Fossil

#    intended to direct the compilation below.
#
-include config.mk				# Configure if present.
ifndef CONFIG_MK_COMPLETE
  include $(MAKEDIR)/linux-gcc-config.mk	# Default to linux-gcc.
endif

#### C Compile and options for use in building executables that 
#    will run on the target platform.  This is usually the same
#    as BCC, unless you are cross-compiling.  This C compiler builds
#    the finished binary for fossil.  The BCC compiler above is used
#    for building intermediate code-generator tools.
#
#TCC = gcc -O6
#TCC = gcc -g -O0 -Wall -fprofile-arcs -ftest-coverage
TCC = gcc -g -Os -Wall

# To add support for HTTPS
TCC += -DFOSSIL_ENABLE_SSL

#### Extra arguments for linking the finished binary.  Fossil needs
#    to link against the Z-Lib compression library.  There are no
#    other dependencies.  We sometimes add the -static option here
#    so that we can build a static executable that will run in a
#    chroot jail.
#
LIB = -lz $(LDFLAGS)

# If using HTTPS:
LIB += -lcrypto -lssl

#### Tcl shell for use in running the fossil testsuite.
#
TCLSH = tclsh

# You should not need to change anything below this line
###############################################################################
#
# Automatic platform-specific options.
HOST_OS!= uname -s

LIB.SunOS= -lsocket -lnsl
LIB += $(LIB.$(HOST_OS))

TCC.DragonFly += -DUSE_PREAD
TCC.FreeBSD += -DUSE_PREAD
TCC.NetBSD += -DUSE_PREAD
TCC.OpenBSD += -DUSE_PREAD
TCC += $(TCC.$(HOST_OS))

include $(SRCDIR)/main.mk

** string is returned even if no quoting is needed.
*/
static char *quoteFilename(const char *zFilename){
  int i, c;
  int needQuote = 0;
  for(i=0; (c = zFilename[i])!=0; i++){
    if( c=='"' ) return 0;
    if( fossil_isspace(c) ) needQuote = 1;
    if( c=='\\' && zFilename[i+1]==0 ) return 0;
    if( c=='$' ) return 0;
  }
  if( needQuote ){
    return mprintf("\"%s\"", zFilename);
  }else{
    return mprintf("%s", zFilename);

** that can be useful before or after a period of disconnected operation.
**
** On Win32 systems, the file is named "_fossil" and is located in
** %LOCALAPPDATA%, %APPDATA% or %HOMEPATH%.
**
** Available operations are:
**
**    ignore     Arguments are repositories that should be ignored
**               by subsequent list, pull, push, rebuild, and sync.
**
**    list | ls  Display the location of all repositories
**
**    pull       Run a "pull" operation on all repositories
**
**    push       Run a "push" on all repositories
**
**    rebuild    Rebuild on all repositories
**
**    sync       Run a "sync" on all repositories
**
** Respositories are automatically added to the set of known repositories
** when one of the following commands against the repository: clone, info,
** pull, push, or sync.  Even previously ignored repositories are added back
** to the list of repositories by these commands.
*/
void all_cmd(void){
  int n;
  Stmt q;
  const char *zCmd;
  char *zSyscmd;
  char *zFossil;

    zCmd = "push -autourl -R";
  }else if( strncmp(zCmd, "pull", n)==0 ){
    zCmd = "pull -autourl -R";
  }else if( strncmp(zCmd, "rebuild", n)==0 ){
    zCmd = "rebuild";
  }else if( strncmp(zCmd, "sync", n)==0 ){
    zCmd = "sync -autourl -R";
  }else if( strncmp(zCmd, "ignore", n)==0 ){
    int j;
    db_begin_transaction();
    for(j=3; j<g.argc; j++){
      db_multi_exec("DELETE FROM global_config WHERE name GLOB 'repo:%q'",
         g.argv[j]);
    }
    db_end_transaction(0);
    return;
  }else{
    fossil_fatal("\"all\" subcommand should be one of: "
                 "ignore list ls push pull rebuild sync");
  }
  zFossil = quoteFilename(g.argv[0]);
  nMissing = 0;
  db_prepare(&q,
     "SELECT DISTINCT substr(name, 6) COLLATE nocase"
     "  FROM global_config"
     " WHERE substr(name, 1, 5)=='repo:' ORDER BY 1"

      printf("%s\n", zFilename);
      continue;
    }
    zQFilename = quoteFilename(zFilename);
    zSyscmd = mprintf("%s %s %s", zFossil, zCmd, zQFilename);
    printf("%s\n", zSyscmd);
    fflush(stdout);
    fossil_system(zSyscmd);
    free(zSyscmd);
    free(zQFilename);
  }
  
  /* If any repositories whose names appear in the ~/.fossil file could not
  ** be found, remove those names from the ~/.fossil file.
  */

      zUrlTail = mprintf("tkt=%s&file=%t", zTarget, zFilename);
    }else{
      zUrlTail = mprintf("page=%t&file=%t", zTarget, zFilename);
    }
    @
    @ <p><a href="/attachview?%s(zUrlTail)">%h(zFilename)</a>
    @ [<a href="/attachdownload/%t(zFilename)?%s(zUrlTail)">download</a>]<br />
    if( zComment ) while( fossil_isspace(zComment[0]) ) zComment++;
    if( zComment && zComment[0] ){
      @ %w(zComment)<br />
    }
    if( zPage==0 && zTkt==0 ){
      if( zSrc==0 || zSrc[0]==0 ){
        zSrc = "Deleted from";
      }else {

    for(i=n=0; zName[i]; i++){
      if( zName[i]=='/' || zName[i]=='\\' ) n = i;
    }
    zName += n;
    if( zName[0]==0 ) zName = "unknown";
    blob_appendf(&manifest, "A %F %F %s\n", zName, zTarget, zUUID);
    zComment = PD("comment", "");
    while( fossil_isspace(zComment[0]) ) zComment++;
    n = strlen(zComment);
    while( n>0 && fossil_isspace(zComment[n-1]) ){ n--; }
    if( n>0 ){
      blob_appendf(&manifest, "C %F\n", zComment);
    }
    zDate = db_text(0, "SELECT datetime('now')");
    zDate[10] = 'T';
    blob_appendf(&manifest, "D %s\n", zDate);
    blob_appendf(&manifest, "U %F\n", g.zLogin ? g.zLogin : "nobody");

  int i;
  Bag old;
  int nDel = 0;   /* Number of deleted entries */
  int nLive = 0;  /* Number of live entries */

  old = *p;
  assert( newSize>old.cnt );
  p->a = fossil_malloc( sizeof(p->a[0])*newSize );
  p->sz = newSize;
  memset(p->a, 0, sizeof(p->a[0])*newSize );
  for(i=0; i<old.sz; i++){
    int e = old.a[i];
    if( e>0 ){
      unsigned h = bag_hash(e)%newSize;
      while( p->a[h] ){

#define blob_is_reset(x)
#endif

/*
** We find that the built-in isspace() function does not work for
** some international character sets.  So here is a substitute.
*/
int fossil_isspace(char c){
  return c==' ' || (c<='\r' && c>='\t');
}

/*
** Other replacements for ctype.h functions.
*/
int fossil_islower(char c){ return c>='a' && c<='z'; }
int fossil_isupper(char c){ return c>='A' && c<='Z'; }
int fossil_isdigit(char c){ return c>='0' && c<='9'; }
int fossil_tolower(char c){
  return fossil_isupper(c) ? c - 'A' + 'a' : c;
}
int fossil_isalpha(char c){
  return (c>='a' && c<='z') || (c>='A' && c<='Z');
}
int fossil_isalnum(char c){
  return (c>='a' && c<='z') || (c>='A' && c<='Z') || (c>='0' && c<='9');
}


/*
** COMMAND: test-isspace
*/
void isspace_cmd(void){
  int i;
  for(i=0; i<=255; i++){
    if( i==' ' || i=='\n' || i=='\t' || i=='\v'
        || i=='\f' || i=='\r' ){
      assert( fossil_isspace((char)i) );
    }else{
      assert( !fossil_isspace((char)i) );
    }
  }
  printf("All 256 characters OK\n");
}

/*
** This routine is called if a blob operation fails because we

  if( newSize==0 ){
    free(pBlob->aData);
    pBlob->aData = 0;
    pBlob->nAlloc = 0;
    pBlob->nUsed = 0;
    pBlob->iCursor = 0;
  }else if( newSize>pBlob->nAlloc || newSize<pBlob->nAlloc-4000 ){
    char *pNew = fossil_realloc(pBlob->aData, newSize);

    pBlob->aData = pNew;
    pBlob->nAlloc = newSize;
    if( pBlob->nUsed>pBlob->nAlloc ){
      pBlob->nUsed = pBlob->nAlloc;
    }
  }
}

** A reallocation function for when the initial string is in unmanaged
** space.  Copy the string to memory obtained from malloc().
*/
static void blobReallocStatic(Blob *pBlob, unsigned int newSize){
  if( newSize==0 ){
    *pBlob = empty_blob;
  }else{
    char *pNew = fossil_malloc( newSize );

    if( pBlob->nUsed>newSize ) pBlob->nUsed = newSize;
    memcpy(pNew, pBlob->aData, pBlob->nUsed);
    pBlob->aData = pNew;
    pBlob->xRealloc = blobReallocMalloc;
    pBlob->nAlloc = newSize;
  }
}

**
** All this does is reduce the length counter.  This routine does
** not insert a new zero terminator.
*/
int blob_trim(Blob *p){
  char *z = p->aData;
  int n = p->nUsed;
  while( n>0 && fossil_isspace(z[n-1]) ){ n--; }
  p->nUsed = n;
  return n;
}

/*
** Extract a single token from pFrom and use it to initialize pTo.
** Return the number of bytes in the token.  If no token is found,

** pTo will be an ephermeral blob.  If pFrom changes, it might alter
** pTo as well.
*/
int blob_token(Blob *pFrom, Blob *pTo){
  char *aData = pFrom->aData;
  int n = pFrom->nUsed;
  int i = pFrom->iCursor;
  while( i<n && fossil_isspace(aData[i]) ){ i++; }
  pFrom->iCursor = i;
  while( i<n && !fossil_isspace(aData[i]) ){ i++; }
  blob_extract(pFrom, i-pFrom->iCursor, pTo);
  while( i<n && fossil_isspace(aData[i]) ){ i++; }
  pFrom->iCursor = i;
  return pTo->nUsed;
}

/*
** Extract everything from the current cursor to the end of the blob
** into a new blob.  The new blob is an ephemerial reference to the

** the integer value in *pValue.
*/
int blob_is_int(Blob *pBlob, int *pValue){
  const char *z = blob_buffer(pBlob);
  int i, n, c, v;
  n = blob_size(pBlob);
  v = 0;
  for(i=0; i<n && (c = z[i])!=0 && c>='0' && c<='9'; i++){
    v = v*10 + c - '0';
  }
  if( i==n ){
    *pValue = v;
    return 1;
  }else{
    return 0;

  if( zFilename==0 || zFilename[0]==0
        || (zFilename[0]=='-' && zFilename[1]==0) ){
    return blob_read_from_channel(pBlob, stdin, -1);
  }
  size = file_size(zFilename);
  blob_zero(pBlob);
  if( size<0 ){
    fossil_fatal("no such file: %s", zFilename);
  }
  if( size==0 ){
    return 0;
  }
  blob_resize(pBlob, size);
  in = fopen(zFilename, "rb");
  if( in==0 ){

*/
void shell_escape(Blob *pBlob, const char *zIn){
  int n = blob_size(pBlob);
  int k = strlen(zIn);
  int i, c;
  char *z;
  for(i=0; (c = zIn[i])!=0; i++){
    if( fossil_isspace(c) || c=='"' || (c=='\\' && zIn[i+1]!=0) ){
      blob_appendf(pBlob, "\"%s\"", zIn);
      z = blob_buffer(pBlob);
      for(i=n+1; i<=n+k; i++){
        if( z[i]=='"' ) z[i] = '_';
      }
      return;
    }
  }
  blob_append(pBlob, zIn, -1);
}

  char *zUuid;           /* Artifact ID of origin */
  Stmt q;                /* Generic query */
  const char *zBranch;   /* Name of the new branch */
  char *zDate;           /* Date that branch was created */
  char *zComment;        /* Check-in comment for the new branch */
  const char *zColor;    /* Color of the new branch */
  Blob branch;           /* manifest for the new branch */

  Manifest *pParent;     /* Parsed parent manifest */
  Blob mcksum;           /* Self-checksum on the manifest */
  const char *zDateOvrd; /* Override date string */
  const char *zUserOvrd; /* Override user name */
 
  noSign = find_option("nosign","",0)!=0;
  zColor = find_option("bgcolor","c",1);
  zDateOvrd = find_option("date-override",0,1);

  user_select();
  db_begin_transaction();
  rootid = name_to_rid(g.argv[4]);
  if( rootid==0 ){
    fossil_fatal("unable to locate check-in off of which to branch");
  }

  pParent = manifest_get(rootid, CFTYPE_MANIFEST);
  if( pParent==0 ){
    fossil_fatal("%s is not a valid check-in", g.argv[4]);
  }

  /* Create a manifest for the new branch */
  blob_zero(&branch);
  if( pParent->zBaseline ){
    blob_appendf(&branch, "B %s\n", pParent->zBaseline);
  }
  zComment = mprintf("Create new branch named \"%h\"", zBranch);
  blob_appendf(&branch, "C %F\n", zComment);
  zDate = date_in_standard_format(zDateOvrd ? zDateOvrd : "now");
  zDate[10] = 'T';
  blob_appendf(&branch, "D %s\n", zDate);

  /* Copy all of the content from the parent into the branch */





  for(i=0; i<pParent->nFile; ++i){

    blob_appendf(&branch, "F %F", pParent->aFile[i].zName);
    if( pParent->aFile[i].zUuid ){
      blob_appendf(&branch, " %s", pParent->aFile[i].zUuid);
      if( pParent->aFile[i].zPerm && pParent->aFile[i].zPerm[0] ){

        blob_appendf(&branch, " %s", pParent->aFile[i].zPerm);


      }
    }
    blob_append(&branch, "\n", 1);
  }
  zUuid = db_text(0, "SELECT uuid FROM blob WHERE rid=%d", rootid);
  blob_appendf(&branch, "P %s\n", zUuid);
  blob_appendf(&branch, "R %s\n", pParent->zRepoCksum);
  manifest_destroy(pParent);

  /* Add the symbolic branch name and the "branch" tag to identify
  ** this as a new branch */
  if( zColor!=0 ){
    blob_appendf(&branch, "T *bgcolor * %F\n", zColor);
  }
  blob_appendf(&branch, "T *branch * %F\n", zBranch);

** to the "dir" page for the directory.
**
** There is no hyperlink on the file element of the path.
**
** The computed string is appended to the pOut blob.  pOut should
** have already been initialized.
*/
void hyperlinked_path(const char *zPath, Blob *pOut, const char *zCI){
  int i, j;
  char *zSep = "";

  for(i=0; zPath[i]; i=j){
    for(j=i; zPath[j] && zPath[j]!='/'; j++){}
    if( zPath[j] && g.okHistory ){
      if( zCI ){
        blob_appendf(pOut, "%s<a href=\"%s/dir?ci=%S&amp;name=%#T\">%#h</a>", 
                     zSep, g.zBaseURL, zCI, j, zPath, j-i, &zPath[i]);
      }else{
        blob_appendf(pOut, "%s<a href=\"%s/dir?name=%#T\">%#h</a>", 
                     zSep, g.zBaseURL, j, zPath, j-i, &zPath[i]);
      }
    }else{
      blob_appendf(pOut, "%s%#h", zSep, j-i, &zPath[i]);
    }
    zSep = "/";
    while( zPath[j]=='/' ){ j++; }
  }
}


/*
** WEBPAGE: dir
**
** Query parameters:
**
**    name=PATH        Directory to display.  Required.
**    ci=LABEL         Show only files in this check-in.  Optional.
*/
void page_dir(void){
  const char *zD = P("name");
  int nD = zD ? strlen(zD)+1 : 0;
  int mxLen;
  int nCol, nRow;
  int cnt, i;
  char *zPrefix;
  Stmt q;
  const char *zCI = P("ci");
  int rid = 0;
  char *zUuid = 0;

  Blob dirname;
  Manifest *pM = 0;
  const char *zSubdirLink;

  login_check_credentials();
  if( !g.okHistory ){ login_needed(); return; }
  style_header("File List");
  sqlite3_create_function(g.db, "pathelement", 2, SQLITE_UTF8, 0,
                          pathelementFunc, 0, 0);

  /* If the name= parameter is an empty string, make it a NULL pointer */
  if( zD && strlen(zD)==0 ){ zD = 0; }

  /* If a specific check-in is requested, fetch and parse it.  If the
  ** specific check-in does not exist, clear zCI.  zCI==0 will cause all
  ** files from all check-ins to be displayed.
  */
  if( zCI ){
    pM = manifest_get_by_name(zCI, &rid);
    if( pM ){
      zUuid = db_text(0, "SELECT uuid FROM blob WHERE rid=%d", rid);

    }else{

      zCI = 0;
    }
  }


  /* Compute the title of the page */  
  blob_zero(&dirname);
  if( zD ){
    blob_append(&dirname, "in directory ", -1);
    hyperlinked_path(zD, &dirname, zCI);
    zPrefix = mprintf("%h/", zD);
  }else{
    blob_append(&dirname, "in the top-level directory", -1);
    zPrefix = "";
  }
  if( zCI ){
    char zShort[20];
    memcpy(zShort, zUuid, 10);
    zShort[10] = 0;
    @ <h2>Files of check-in [<a href="vinfo?name=%T(zUuid)">%s(zShort)</a>]
    @ %s(blob_str(&dirname))</h2>
    zSubdirLink = mprintf("%s/dir?ci=%S&amp;name=%T", g.zTop, zUuid, zPrefix);
    if( zD ){
      style_submenu_element("Top", "Top", "%s/dir?ci=%S", g.zTop, zUuid);
      style_submenu_element("All", "All", "%s/dir?name=%t", g.zTop, zD);
    }else{
      style_submenu_element("All", "All", "%s/dir", g.zBaseURL);
    }
  }else{
    int hasTrunk;
    @ <h2>The union of all files from all check-ins
    @ %s(blob_str(&dirname))</h2>
    hasTrunk = db_exists(
                  "SELECT 1 FROM tagxref WHERE tagid=%d AND value='trunk'",
                  TAG_BRANCH);
    zSubdirLink = mprintf("%s/dir?name=%T", g.zBaseURL, zPrefix);
    if( zD ){
      style_submenu_element("Top", "Top", "%s/dir", g.zBaseURL);
      style_submenu_element("Tip", "Tip", "%s/dir?name=%t&amp;ci=tip",
                            g.zBaseURL, zD);
      if( hasTrunk ){
        style_submenu_element("Trunk", "Trunk", "%s/dir?name=%t&amp;ci=trunk",
                               g.zBaseURL,zD);
      }
    }else{
      style_submenu_element("Tip", "Tip", "%s/dir?ci=tip", g.zBaseURL);
      if( hasTrunk ){
        style_submenu_element("Trunk", "Trunk", "%s/dir?ci=trunk", g.zBaseURL);
      }
    }
  }

  /* Compute the temporary table "localfiles" containing the names
  ** of all files and subdirectories in the zD[] directory.  
  **
  ** Subdirectory names begin with "/".  This causes them to sort
  ** first and it also gives us an easy way to distinguish files
  ** from directories in the loop that follows.
  */
  db_multi_exec(
     "CREATE TEMP TABLE localfiles(x UNIQUE NOT NULL, u);"

  );
  if( zCI ){
    Stmt ins;
    ManifestFile *pFile;
    ManifestFile *pPrev = 0;
    int nPrev = 0;
    int c;

    db_prepare(&ins,
       "INSERT OR IGNORE INTO localfiles VALUES(pathelement(:x,0), :u)"
    );
    manifest_file_rewind(pM);
    while( (pFile = manifest_file_next(pM,0))!=0 ){
      if( nD>0 && memcmp(pFile->zName, zD, nD-1)!=0 ) continue;
      if( pPrev && memcmp(&pFile->zName[nD],&pPrev->zName[nD],nPrev)==0 ){
        continue;
      }
      db_bind_text(&ins, ":x", &pFile->zName[nD]);
      db_bind_text(&ins, ":u", pFile->zUuid);
      db_step(&ins);
      db_reset(&ins);
      pPrev = pFile;
      for(nPrev=0; (c=pPrev->zName[nD+nPrev]) && c!='/'; nPrev++){}
      if( c=='/' ) nPrev++;
    }
    db_finalize(&ins);





  }else if( zD ){
    db_multi_exec(
      "INSERT OR IGNORE INTO localfiles"
      " SELECT pathelement(name,%d), NULL FROM filename"
      "  WHERE name GLOB '%q/*'",
      nD, zD
    );
  }else{
    db_multi_exec(
      "INSERT OR IGNORE INTO localfiles"
      " SELECT pathelement(name,0), NULL FROM filename"
    );
  }

  /* Generate a multi-column table listing the contents of zD[]
  ** directory.
  */
  mxLen = db_int(12, "SELECT max(length(x)) FROM localfiles /*scan*/");

      @ <li><a href="%s(g.zBaseURL)/artifact?name=%s(zUuid)">%h(zFN)</a></li>
    }else{
      @ <li><a href="%s(g.zBaseURL)/finfo?name=%T(zPrefix)%T(zFN)">%h(zFN)
      @     </a></li>
    }
  }
  db_finalize(&q);
  manifest_destroy(pM);
  @ </ul></td></tr></table>
  style_footer();
}

/*
** Render an 8-character hexadecimal string as ascii art.
** Space to hold the result is obtained from malloc() and should be freed
** by the caller.
*/
char *captcha_render(const char *zPw){
  char *z = fossil_malloc( 500 );
  int i, j, k, m;

  k = 0;
  for(i=0; i<6; i++){
    for(j=0; j<8; j++){
      unsigned char v = hexValue(zPw[j]);
      v = (aFont1[v] >> ((5-i)*4)) & 0xf;

/*
** Render an 8-digit hexadecimal string as ascii arg.
** Space to hold the result is obtained from malloc() and should be freed
** by the caller.
*/
char *captcha_render(const char *zPw){
  char *z = fossil_malloc( 300 );
  int i, j, k, m;
  const char *zChar;

  k = 0;
  for(i=0; i<4; i++){
    for(j=0; j<8; j++){
      unsigned char v = hexValue(zPw[j]);

/*
** Render an 8-digit hexadecimal string as ascii arg.
** Space to hold the result is obtained from malloc() and should be freed
** by the caller.
*/
char *captcha_render(const char *zPw){
  char *z = fossil_malloc( 600 );
  int i, j, k, m;
  const char *zChar;

  k = 0;
  for(i=0; i<6; i++){
    for(j=0; j<8; j++){
      unsigned char v = hexValue(zPw[j]);

**
** zName and zValue are not copied and must not change or be
** deallocated after this routine returns.
*/
void cgi_set_parameter_nocopy(const char *zName, const char *zValue){
  if( nAllocQP<=nUsedQP ){
    nAllocQP = nAllocQP*2 + 10;
    aParamQP = fossil_realloc( aParamQP, nAllocQP*sizeof(aParamQP[0]) );

  }
  aParamQP[nUsedQP].zName = zName;
  aParamQP[nUsedQP].zValue = zValue;
  if( g.fHttpTrace ){
    fprintf(stderr, "# cgi: %s = [%s]\n", zName, zValue);
  }
  aParamQP[nUsedQP].seq = seqQP++;

** should not be deallocated or changed again after this routine
** returns or it will corrupt the parameter table.
*/
static void add_param_list(char *z, int terminator){
  while( *z ){
    char *zName;
    char *zValue;
    while( fossil_isspace(*z) ){ z++; }
    zName = z;
    while( *z && *z!='=' && *z!=terminator ){ z++; }
    if( *z=='=' ){
      *z = 0;
      z++;
      zValue = z;
      while( *z && *z!=terminator ){ z++; }
      if( *z ){
        *z = 0;
        z++;
      }
      dehttpize(zValue);
    }else{
      if( *z ){ *z++ = 0; }
      zValue = "";
    }
    if( fossil_islower(zName[0]) ){
      cgi_set_parameter_nocopy(zName, zValue);
    }
  }
}

/*
** *pz is a string that consists of multiple lines of text.  This

** '\000' characters are inserted in z[] at the end of each token.
** This routine returns the total number of tokens on the line, 6
** in the example above.
*/
static int tokenize_line(char *z, int mxArg, char **azArg){
  int i = 0;
  while( *z ){
    while( fossil_isspace(*z) || *z==';' ){ z++; }
    if( *z=='"' && z[1] ){
      *z = 0;
      z++;
      if( i<mxArg-1 ){ azArg[i++] = z; }
      while( *z && *z!='"' ){ z++; }
      if( *z==0 ) break;
      *z = 0;
      z++;
    }else{
      if( i<mxArg-1 ){ azArg[i++] = z; }
      while( *z && !fossil_isspace(*z) && *z!=';' && *z!='"' ){ z++; }
      if( *z && *z!='"' ){
        *z = 0;
        z++;
      }
    }
  }
  azArg[i] = 0;

  zBoundry = get_line_from_string(&z, &len);
  if( zBoundry==0 ) return;
  while( (zLine = get_line_from_string(&z, &len))!=0 ){
    if( zLine[0]==0 ){
      int nContent = 0;
      zValue = get_bounded_content(&z, &len, zBoundry, &nContent);
      if( zName && zValue && fossil_islower(zName[0]) ){
        cgi_set_parameter_nocopy(zName, zValue);
        if( showBytes ){
          cgi_set_parameter_nocopy(mprintf("%s:bytes", zName),
               mprintf("%d",nContent));
        }
      }
      zName = 0;
      showBytes = 0;
    }else{
      nArg = tokenize_line(zLine, sizeof(azArg)/sizeof(azArg[0]), azArg);
      for(i=0; i<nArg; i++){
        int c = fossil_tolower(azArg[i][0]);
        int n = strlen(azArg[i]);
        if( c=='c' && sqlite3_strnicmp(azArg[i],"content-disposition:",n)==0 ){
          i++;
        }else if( c=='n' && sqlite3_strnicmp(azArg[i],"name=",n)==0 ){
          zName = azArg[++i];
        }else if( c=='f' && sqlite3_strnicmp(azArg[i],"filename=",n)==0 ){
          char *z = azArg[++i];
          if( zName && z && fossil_islower(zName[0]) ){
            cgi_set_parameter_nocopy(mprintf("%s:filename",zName), z);
          }
          showBytes = 1;
        }else if( c=='c' && sqlite3_strnicmp(azArg[i],"content-type:",n)==0 ){
          char *z = azArg[++i];
          if( zName && z && fossil_islower(zName[0]) ){
            cgi_set_parameter_nocopy(mprintf("%s:mimetype",zName), z);
          }
        }
      }
    }
  }        
}

  len = atoi(PD("CONTENT_LENGTH", "0"));
  g.zContentType = zType = P("CONTENT_TYPE");
  if( len>0 && zType ){
    blob_zero(&g.cgiIn);
    if( strcmp(zType,"application/x-www-form-urlencoded")==0 
         || strncmp(zType,"multipart/form-data",19)==0 ){
      z = fossil_malloc( len+1 );

      len = fread(z, 1, len, g.httpIn);
      z[len] = 0;
      if( zType[0]=='a' ){
        add_param_list(z, '&');
      }else{
        process_multipart_form_data(z, len);
      }

    }
  }

  /* If no match is found and the name begins with an upper-case
  ** letter, then check to see if there is an environment variable
  ** with the given name.
  */
  if( fossil_isupper(zName[0]) ){
    const char *zValue = getenv(zName);
    if( zValue ){
      cgi_set_parameter_nocopy(zName, zValue);
      CGIDEBUG(("env-match [%s] = [%s]\n", zName, zValue));
      return zValue;
    }
  }

*/
static char *extract_token(char *zInput, char **zLeftOver){
  char *zResult = 0;
  if( zInput==0 ){
    if( zLeftOver ) *zLeftOver = 0;
    return 0;
  }
  while( fossil_isspace(*zInput) ){ zInput++; }
  zResult = zInput;
  while( *zInput && !fossil_isspace(*zInput) ){ zInput++; }
  if( *zInput ){
    *zInput = 0;
    zInput++;
    while( fossil_isspace(*zInput) ){ zInput++; }
  }
  if( zLeftOver ){ *zLeftOver = zInput; }
  return zResult;
}

/*
** This routine handles a single HTTP request which is coming in on
** standard input and which replies on standard output.
**
** The HTTP request is read from standard input and is used to initialize
** environment variables as per CGI.  The cgi_init() routine to complete
** the setup.  Once all the setup is finished, this procedure returns
** and subsequent code handles the actual generation of the webpage.
*/
void cgi_handle_http_request(const char *zIpAddr){
  char *z, *zToken;
  int i;
  struct sockaddr_in remoteName;
  socklen_t size = sizeof(struct sockaddr_in);
  char zLine[2000];     /* A single line of input. */

  g.fullHttpReply = 1;
  if( fgets(zLine, sizeof(zLine),g.httpIn)==0 ){
    malformed_request();
  }
  zToken = extract_token(zLine, &z);

  cgi_setenv("REQUEST_URI", zToken);
  for(i=0; zToken[i] && zToken[i]!='?'; i++){}
  if( zToken[i] ) zToken[i++] = 0;
  cgi_setenv("PATH_INFO", zToken);
  cgi_setenv("QUERY_STRING", &zToken[i]);
  if( zIpAddr==0 &&
        getpeername(fileno(g.httpIn), (struct sockaddr*)&remoteName, 
                                &size)>=0
  ){
    zIpAddr = inet_ntoa(remoteName.sin_addr);
  }
  if( zIpAddr ){   
    cgi_setenv("REMOTE_ADDR", zIpAddr);
    g.zIpAddr = mprintf("%s", zIpAddr);
  }
 
  /* Get all the optional fields that follow the first line.
  */
  while( fgets(zLine,sizeof(zLine),g.httpIn) ){
    char *zFieldName;
    char *zVal;

    zFieldName = extract_token(zLine,&zVal);
    if( zFieldName==0 || *zFieldName==0 ) break;
    while( fossil_isspace(*zVal) ){ zVal++; }
    i = strlen(zVal);
    while( i>0 && fossil_isspace(zVal[i-1]) ){ i--; }
    zVal[i] = 0;
    for(i=0; zFieldName[i]; i++){
      zFieldName[i] = fossil_tolower(zFieldName[i]);
    }
    if( strcmp(zFieldName,"content-length:")==0 ){
      cgi_setenv("CONTENT_LENGTH", zVal);
    }else if( strcmp(zFieldName,"content-type:")==0 ){
      cgi_setenv("CONTENT_TYPE", zVal);
    }else if( strcmp(zFieldName,"cookie:")==0 ){
      cgi_setenv("HTTP_COOKIE", zVal);
    }else if( strcmp(zFieldName,"https:")==0 ){

#if defined(_WIN32)
  /* Use win32_http_server() instead */
  fossil_exit(1);
#else
  int listener = -1;           /* The server socket */
  int connection;              /* A socket for each individual connection */
  fd_set readfds;              /* Set of file descriptors for select() */
  socklen_t lenaddr;           /* Length of the inaddr structure */
  int child;                   /* PID of the child process */
  int nchildren = 0;           /* Number of child processes */
  struct timeval delay;        /* How long to wait inside select() */
  struct sockaddr_in inaddr;   /* The socket address */
  int opt = 1;                 /* setsockopt flag */
  int iPort = mnPort;

    delay.tv_sec = 60;
    delay.tv_usec = 0;
    FD_ZERO(&readfds);
    FD_SET( listener, &readfds);
    select( listener+1, &readfds, 0, 0, &delay);
    if( FD_ISSET(listener, &readfds) ){
      lenaddr = sizeof(inaddr);
      connection = accept(listener, (struct sockaddr*)&inaddr, &lenaddr);

      if( connection>=0 ){
        child = fork();
        if( child!=0 ){
          if( child>0 ) nchildren++;
          close(connection);
        }else{
          close(0);

  int nTerm = 0;
  int i;
  int cTerm;

  if( zGlobList==0 || zGlobList[0]==0 ) return "0";
  blob_zero(&expr);
  while( zGlobList[0] ){
    while( fossil_isspace(zGlobList[0]) || zGlobList[0]==',' ) zGlobList++;
    if( zGlobList[0]==0 ) break;
    if( zGlobList[0]=='\'' || zGlobList[0]=='"' ){
      cTerm = zGlobList[0];
      zGlobList++;
    }else{
      cTerm = ',';
    }
    for(i=0; zGlobList[i] && zGlobList[i]!=cTerm; i++){}
    if( cTerm==',' ){
      while( i>0 && fossil_isspace(zGlobList[i-1]) ){ i--; }
    }
    blob_appendf(&expr, "%s%s GLOB '%.*q'", zSep, zVal, i, zGlobList);
    zSep = " OR ";
    if( cTerm!=',' && zGlobList[i] ) i++;
    zGlobList += i;
    if( zGlobList[0] ) zGlobList++;
    nTerm++;

void extra_cmd(void){
  Blob path;
  Blob repo;
  Stmt q;
  int n;
  const char *zIgnoreFlag = find_option("ignore",0,1);
  int allFlag = find_option("dotfiles",0,0)!=0;
  int outputManifest = db_get_boolean("manifest",0);

  db_must_be_within_tree();
  db_multi_exec("CREATE TEMP TABLE sfile(x TEXT PRIMARY KEY)");
  n = strlen(g.zLocalRoot);
  blob_init(&path, g.zLocalRoot, n-1);
  if( zIgnoreFlag==0 ){
    zIgnoreFlag = db_get("ignore-glob", 0);
  }
  vfile_scan(0, &path, blob_size(&path), allFlag);
  db_prepare(&q, 
      "SELECT x FROM sfile"
      " WHERE x NOT IN ('%s','%s','_FOSSIL_',"
                       "'_FOSSIL_-journal','.fos','.fos-journal',"
                       "'_FOSSIL_-wal','_FOSSIL_-shm','.fos-wal',"
                       "'.fos-shm')"
      "   AND NOT %s"
      " ORDER BY 1",
      outputManifest ? "manifest" : "_FOSSIL_",
      outputManifest ? "manifest.uuid" : "_FOSSIL_",
      glob_expr("x", zIgnoreFlag)
  );
  if( file_tree_name(g.zRepositoryName, &repo, 0) ){
    db_multi_exec("DELETE FROM sfile WHERE x=%B", &repo);
  }
  while( db_step(&q)==SQLITE_ROW ){
    printf("%s\n", db_column_text(&q, 0));

                   g.zLocalRoot);
#if defined(_WIN32)
  blob_add_cr(&text);
#endif
  blob_write_to_file(&text, zFile);
  zCmd = mprintf("%s \"%s\"", zEditor, zFile);
  printf("%s\n", zCmd);
  if( fossil_system(zCmd) ){
    fossil_panic("editor aborted");
  }
  blob_reset(&text);
  blob_read_from_file(&text, zFile);
  blob_remove_cr(&text);
  unlink(zFile);
  free(zFile);
  blob_zero(pComment);
  while( blob_line(&text, &line) ){
    int i, n;
    char *z;
    n = blob_size(&line);
    z = blob_buffer(&line);
    for(i=0; i<n && fossil_isspace(z[i]);  i++){}
    if( i<n && z[i]=='#' ) continue;
    if( i<n || blob_size(pComment)>0 ){
      blob_appendf(pComment, "%b", &line);
    }
  }
  blob_reset(&text);
  zComment = blob_str(pComment);
  i = strlen(zComment);
  while( i>0 && fossil_isspace(zComment[i-1]) ){ i--; }
  blob_resize(pComment, i);
}

/*
** Populate the Global.aCommitFile[] based on the command line arguments
** to a [commit] command. Global.aCommitFile is an array of integers
** sized at (N+1), where N is the number of arguments passed to [commit].

** to mean "all files".
*/
void select_commit_files(void){
  if( g.argc>2 ){
    int ii;
    Blob b;
    blob_zero(&b);
    g.aCommitFile = fossil_malloc(sizeof(int)*(g.argc-1));

    for(ii=2; ii<g.argc; ii++){
      int iId;
      file_tree_name(g.argv[ii], &b, 1);
      iId = db_int(-1, "SELECT id FROM vfile WHERE pathname=%Q", blob_str(&b));
      if( iId<0 ){
        fossil_fatal("fossil knows nothing about: %s", g.argv[ii]);

  b = db_exists(
    "SELECT 1 FROM event"
    " WHERE datetime(mtime)>=%Q"
    "   AND type='ci' AND objid=%d",
    zDate, rid
  );
  if( b ){
    fossil_fatal("ancestor check-in [%.10s] (%s) is not older (clock skew?)"
                 " Use -f to override.", zUuid, zDate);
  }
#endif
}

/*
** zDate should be a valid date string.  Convert this string into the

  assert( strlen(zDate)==19 );
  assert( zDate[10]==' ' );
  zDate[10] = 'T';
  return zDate;
}

/*


** Create a manifest.



*/
static void create_manifest(
  Blob *pOut,                 /* Write the manifest here */
  const char *zBaselineUuid,  /* UUID of baseline, or zero */
  Manifest *pBaseline,        /* Make it a delta manifest if not zero */
  Blob *pComment,             /* Check-in comment text */
  int vid,                    /* blob-id of the parent manifest */
  int verifyDate,             /* Verify that child is younger */
  Blob *pCksum,               /* Repository checksum.  May be 0 */
  const char *zDateOvrd,      /* Date override.  If 0 then use 'now' */
  const char *zUserOvrd,      /* User override.  If 0 then use g.zLogin */
  const char *zBranch,        /* Branch name.  May be 0 */
  const char *zBgColor,       /* Background color.  May be 0 */
  int *pnFBcard               /* Number of generated B- and F-cards */
){
  char *zDate;                /* Date of the check-in */
  char *zParentUuid;          /* UUID of parent check-in */
  Blob filename;              /* A single filename */
  int nBasename;              /* Size of base filename */
  Stmt q;                     /* Query of files changed */
  Stmt q2;                    /* Query of merge parents */
  Blob mcksum;                /* Manifest checksum */
  ManifestFile *pFile;        /* File from the baseline */
  int nFBcard = 0;            /* Number of B-cards and F-cards */

  assert( pBaseline==0 || pBaseline->zBaseline==0 );
  assert( pBaseline==0 || zBaselineUuid!=0 );
  blob_zero(pOut);
  zParentUuid = db_text(0, "SELECT uuid FROM blob WHERE rid=%d", vid);
  if( pBaseline ){
    blob_appendf(pOut, "B %s\n", zBaselineUuid);
    manifest_file_rewind(pBaseline);
    pFile = manifest_file_next(pBaseline, 0);
    nFBcard++;
  }else{
    pFile = 0;
  }
  blob_appendf(pOut, "C %F\n", blob_str(pComment));
  zDate = date_in_standard_format(zDateOvrd ? zDateOvrd : "now");
  blob_appendf(pOut, "D %s\n", zDate);
  zDate[10] = ' ';
  db_prepare(&q,
    "SELECT pathname, uuid, origname, blob.rid, isexe"
    "  FROM vfile JOIN blob ON vfile.mrid=blob.rid"
    " WHERE NOT deleted AND vfile.vid=%d"
    " ORDER BY 1", vid);
  blob_zero(&filename);
  blob_appendf(&filename, "%s", g.zLocalRoot);
  nBasename = blob_size(&filename);
  while( db_step(&q)==SQLITE_ROW ){
    const char *zName = db_column_text(&q, 0);
    const char *zUuid = db_column_text(&q, 1);
    const char *zOrig = db_column_text(&q, 2);
    int frid = db_column_int(&q, 3);
    int isexe = db_column_int(&q, 4);
    const char *zPerm;
    int cmp;
    blob_append(&filename, zName, -1);
#if !defined(_WIN32)
    /* For unix, extract the "executable" permission bit directly from
    ** the filesystem.  On windows, the "executable" bit is retained
    ** unchanged from the original. */
    isexe = file_isexe(blob_str(&filename));
#endif
    if( isexe ){
      zPerm = " x";
    }else{
      zPerm = "";
    }
    if( !g.markPrivate ) content_make_public(frid);
    while( pFile && strcmp(pFile->zName,zName)<0 ){
      blob_appendf(pOut, "F %F\n", pFile->zName);
      pFile = manifest_file_next(pBaseline, 0);
      nFBcard++;
    }
    cmp = 1;
    if( pFile==0
      || (cmp = strcmp(pFile->zName,zName))!=0
      || strcmp(pFile->zUuid, zUuid)!=0
    ){
      blob_resize(&filename, nBasename);
      if( zOrig==0 || strcmp(zOrig,zName)==0 ){
        blob_appendf(pOut, "F %F %s%s\n", zName, zUuid, zPerm);
      }else{
        if( zPerm[0]==0 ){ zPerm = " w"; }
        blob_appendf(pOut, "F %F %s%s %F\n", zName, zUuid, zPerm, zOrig);
      }
      nFBcard++;
    }
    if( cmp==0 ) pFile = manifest_file_next(pBaseline,0);
  }
  blob_reset(&filename);
  db_finalize(&q);
  while( pFile ){
    blob_appendf(pOut, "F %F\n", pFile->zName);
    pFile = manifest_file_next(pBaseline, 0);
    nFBcard++;
  }
  blob_appendf(pOut, "P %s", zParentUuid);
  if( verifyDate ) checkin_verify_younger(vid, zParentUuid, zDate);
  free(zParentUuid);
  db_prepare(&q2, "SELECT merge FROM vmerge WHERE id=:id");
  db_bind_int(&q2, ":id", 0);
  while( db_step(&q2)==SQLITE_ROW ){
    char *zMergeUuid;
    int mid = db_column_int(&q2, 0);
    if( !g.markPrivate && content_is_private(mid) ) continue;
    zMergeUuid = db_text(0, "SELECT uuid FROM blob WHERE rid=%d", mid);
    if( zMergeUuid ){
      blob_appendf(pOut, " %s", zMergeUuid);
      if( verifyDate ) checkin_verify_younger(mid, zMergeUuid, zDate);
      free(zMergeUuid);
    }
  }
  db_finalize(&q2);
  free(zDate);

  blob_appendf(pOut, "\n");
  if( pCksum ) blob_appendf(pOut, "R %b\n", pCksum);
  if( zBranch && zBranch[0] ){
    Stmt q;
    if( zBgColor && zBgColor[0] ){
      blob_appendf(pOut, "T *bgcolor * %F\n", zBgColor);
    }
    blob_appendf(pOut, "T *branch * %F\n", zBranch);
    blob_appendf(pOut, "T *sym-%F *\n", zBranch);

    /* Cancel all other symbolic tags */
    db_prepare(&q,
        "SELECT tagname FROM tagxref, tag"
        " WHERE tagxref.rid=%d AND tagxref.tagid=tag.tagid"
        "   AND tagtype>0 AND tagname GLOB 'sym-*'"
        "   AND tagname!='sym-'||%Q"
        " ORDER BY tagname",
        vid, zBranch);
    while( db_step(&q)==SQLITE_ROW ){
      const char *zTag = db_column_text(&q, 0);
      blob_appendf(pOut, "T -%F *\n", zTag);
    }
    db_finalize(&q);
  }  
  blob_appendf(pOut, "U %F\n", zUserOvrd ? zUserOvrd : g.zLogin);
  md5sum_blob(pOut, &mcksum);
  blob_appendf(pOut, "Z %b\n", &mcksum);
  if( pnFBcard ) *pnFBcard = nFBcard;
}


/*
** COMMAND: ci
** COMMAND: commit
**
** Usage: %fossil commit ?OPTIONS? ?FILE...?
**
** Create a new version containing all of the changes in the current
** checkout.  You will be prompted to enter a check-in comment unless
** the comment has been specified on the command-line using "-m" or a 
** file containing the comment using -M.  The editor defined in the
** "editor" fossil option (see %fossil help set) will be used, or from
** the "VISUAL" or "EDITOR" environment variables (in that order) if
** no editor is set.
**


** All files that have changed will be committed unless some subset of
** files is specified on the command line.
**
** The --branch option followed by a branch name causes the new check-in
** to be placed in the named branch.  The --bgcolor option can be followed
** by a color name (ex:  '#ffc0c0') to specify the background color of
** entries in the new branch when shown in the web timeline interface.
**
** A check-in is not permitted to fork unless the --force or -f
** option appears.  A check-in is not allowed against a closed check-in.
**
** The --private option creates a private check-in that is never synced.
** Children of private check-ins are automatically private.
**
** Options:
**
**    --comment|-m COMMENT-TEXT
**    --message-file|-M COMMENT-FILE
**    --branch NEW-BRANCH-NAME
**    --bgcolor COLOR
**    --nosign
**    --force|-f
**    --private
**    --baseline
**    --delta
**    
*/
void commit_cmd(void){
  int hasChanges;        /* True if unsaved changes exist */
  int vid;               /* blob-id of parent version */
  int nrid;              /* blob-id of a modified file */
  int nvid;              /* Blob-id of the new check-in */
  Blob comment;          /* Check-in comment */
  const char *zComment;  /* Check-in comment */
  Stmt q;                /* Query to find files that have been modified */

  char *zUuid;           /* UUID of the new check-in */
  int noSign = 0;        /* True to omit signing the manifest using GPG */
  int isAMerge = 0;      /* True if checking in a merge */
  int forceFlag = 0;     /* Force a fork */
  int forceDelta = 0;    /* Force a delta-manifest */
  int forceBaseline = 0; /* Force a baseline-manifest */
  char *zManifestFile;   /* Name of the manifest file */
  int useCksum;          /* True if checksums should be computed and verified */
  int outputManifest;    /* True to output "manifest" and "manifest.uuid" */
  int testRun;           /* True for a test run.  Debugging only */
  const char *zBranch;   /* Create a new branch with this name */
  const char *zBgColor;  /* Set background color when branching */
  const char *zDateOvrd; /* Override date string */
  const char *zUserOvrd; /* Override user name */
  const char *zComFile;  /* Read commit message from this file */

  Blob manifest;         /* Manifest in baseline form */
  Blob muuid;            /* Manifest uuid */

  Blob cksum1, cksum2;   /* Before and after commit checksums */
  Blob cksum1b;          /* Checksum recorded in the manifest */
  int szD;               /* Size of the delta manifest */
  int szB;               /* Size of the baseline manifest */
 
  url_proxy_options();
  noSign = find_option("nosign",0,0)!=0;
  forceDelta = find_option("delta",0,0)!=0;
  forceBaseline = find_option("baseline",0,0)!=0;
  if( forceDelta && forceBaseline ){
    fossil_fatal("cannot use --delta and --baseline together");
  }
  testRun = find_option("test",0,0)!=0;
  zComment = find_option("comment","m",1);
  forceFlag = find_option("force", "f", 0)!=0;
  zBranch = find_option("branch","b",1);
  zBgColor = find_option("bgcolor",0,1);
  zComFile = find_option("message-file", "M", 1);
  if( find_option("private",0,0) ){
    g.markPrivate = 1;
    if( zBranch==0 ) zBranch = "private";
    if( zBgColor==0 ) zBgColor = "#fec084";  /* Orange */
  }
  zDateOvrd = find_option("date-override",0,1);
  zUserOvrd = find_option("user-override",0,1);
  db_must_be_within_tree();
  noSign = db_get_boolean("omitsign", 0)|noSign;
  if( db_get_boolean("clearsign", 0)==0 ){ noSign = 1; }
  useCksum = db_get_boolean("repo-cksum", 1);
  outputManifest = db_get_boolean("manifest", 0);
  verify_all_options();

  /* So that older versions of Fossil (that do not understand delta-
  ** manifest) can continue to use this repository, do not create a new
  ** delta-manifest unless this repository already contains one or more
  ** delta-manifets, or unless the delta-manifest is explicitly requested
  ** by the --delta option.
  */
  if( !forceDelta && !db_get_boolean("seen-delta-manifest",0) ){
    forceBaseline = 1;
  }

  /* Get the ID of the parent manifest artifact */
  vid = db_lget_int("checkout", 0);
  if( content_is_private(vid) ){
    g.markPrivate = 1;
  }

  /*
  ** Check that the user exists.
  */
  if( !db_exists("SELECT 1 FROM user WHERE login=%Q", g.zLogin) ){
    fossil_fatal("no such user: %s", g.zLogin);
  }
  
  hasChanges = unsaved_changes();
  db_begin_transaction();
  db_record_repository_filename(0);

  if( hasChanges==0 && !isAMerge && !forceFlag ){
    fossil_fatal("nothing has changed");
  }

  /* If one or more files that were named on the command line have not
  ** been modified, bail out now.
  */
  if( g.aCommitFile ){
    Blob unmodified;

  */
  if( db_exists("SELECT 1 FROM tagxref"
                " WHERE tagid=%d AND rid=%d AND tagtype>0",
                TAG_CLOSED, vid) ){
    fossil_fatal("cannot commit against a closed leaf");
  }

  if( useCksum ) vfile_aggregate_checksum_disk(vid, &cksum1);
  if( zComment ){
    blob_zero(&comment);
    blob_append(&comment, zComment, -1);
  }else if( zComFile ){
    blob_zero(&comment);
    blob_read_from_file(&comment, zComFile);
  }else{

      content_deltify(rid, nrid, 0);
    }
    db_multi_exec("UPDATE vfile SET mrid=%d, rid=%d WHERE id=%d", nrid,nrid,id);
    db_multi_exec("INSERT OR IGNORE INTO unsent VALUES(%d)", nrid);
  }
  db_finalize(&q);

  /* Create the new manifest */

  if( blob_size(&comment)==0 ){
    blob_append(&comment, "(no comment)", -1);
  }
  if( forceDelta ){








    blob_zero(&manifest);


















  }else{

    create_manifest(&manifest, 0, 0, &comment, vid,
                    !forceFlag, useCksum ? &cksum1 : 0,
                    zDateOvrd, zUserOvrd, zBranch, zBgColor, &szB);
  }

  /* See if a delta-manifest would be more appropriate */
  if( !forceBaseline ){
    const char *zBaselineUuid;
    Manifest *pParent;
    Manifest *pBaseline;
    pParent = manifest_get(vid, CFTYPE_MANIFEST);
    if( pParent && pParent->zBaseline ){
      zBaselineUuid = pParent->zBaseline;
      pBaseline = manifest_get_by_name(zBaselineUuid, 0);
    }else{







      zBaselineUuid = db_text(0, "SELECT uuid FROM blob WHERE rid=%d", vid);

      pBaseline = pParent;
    }
    if( pBaseline ){
      Blob delta;
      create_manifest(&delta, zBaselineUuid, pBaseline, &comment, vid,

                      !forceFlag, useCksum ? &cksum1 : 0,




                      zDateOvrd, zUserOvrd, zBranch, zBgColor, &szD);
      /*
      ** At this point, two manifests have been constructed, either of
      ** which would work for this checkin.  The first manifest (held





      ** in the "manifest" variable) is a baseline manifest and the second
      ** (held in variable named "delta") is a delta manifest.  The
      ** question now is: which manifest should we use?
      **
      ** Let B be the number of F-cards in the baseline manifest and
      ** let D be the number of F-cards in the delta manifest, plus one for


      ** the B-card.  (B is held in the szB variable and D is held in the
      ** szD variable.)  Assume that all delta manifests adds X new F-cards.
      ** Then to minimize the total number of F- and B-cards in the repository,
      ** we should use the delta manifest if and only if:
      **
      **      D*D < B*X - X*X
      **
      ** X is an unknown here, but for most repositories, we will not be
      ** far wrong if we assume X=3.
      */
      if( forceDelta || (szD*szD)<(szB*3-9) ){
        blob_reset(&manifest);
        manifest = delta;
      }else{
        blob_reset(&delta);

      }






    }else if( forceDelta ){



      fossil_panic("unable to find a baseline-manifest for the delta");
    }

  }



  if( !noSign && !g.markPrivate && clearsign(&manifest, &manifest) ){
    Blob ans;
    blob_zero(&ans);
    prompt_user("unable to sign manifest.  continue (y/N)? ", &ans);
    if( blob_str(&ans)[0]!='y' ){
      fossil_exit(1);
    }
  }

  /* If the --test option is specified, output the manifest file
  ** and rollback the transaction.  
  */
  if( testRun ){
    blob_write_to_file(&manifest, "");
  }

  if( outputManifest ){
    zManifestFile = mprintf("%smanifest", g.zLocalRoot);
    blob_write_to_file(&manifest, zManifestFile);
    blob_reset(&manifest);
    blob_read_from_file(&manifest, zManifestFile);
    free(zManifestFile);
  }
  nvid = content_put(&manifest, 0, 0);
  if( nvid==0 ){
    fossil_panic("trouble committing manifest: %s", g.zErrMsg);
  }
  db_multi_exec("INSERT OR IGNORE INTO unsent VALUES(%d)", nvid);
  manifest_crosslink(nvid, &manifest);
  content_deltify(vid, nvid, 0);
  zUuid = db_text(0, "SELECT uuid FROM blob WHERE rid=%d", nvid);
  printf("New_Version: %s\n", zUuid);
  if( outputManifest ){
    zManifestFile = mprintf("%smanifest.uuid", g.zLocalRoot);
    blob_zero(&muuid);
    blob_appendf(&muuid, "%s\n", zUuid);
    blob_write_to_file(&muuid, zManifestFile);
    free(zManifestFile);
    blob_reset(&muuid);
  }

  
  /* Update the vfile and vmerge tables */
  db_multi_exec(
    "DELETE FROM vfile WHERE (vid!=%d OR deleted) AND file_is_selected(id);"
    "DELETE FROM vmerge WHERE file_is_selected(id) OR id=0;"
    "UPDATE vfile SET vid=%d;"
    "UPDATE vfile SET rid=mrid, chnged=0, deleted=0, origname=NULL"
    " WHERE file_is_selected(id);"
    , vid, nvid
  );
  db_lset_int("checkout", nvid);

  if( useCksum ){
    /* Verify that the repository checksum matches the expected checksum
    ** calculated before the checkin started (and stored as the R record
    ** of the manifest file).
    */
    vfile_aggregate_checksum_repository(nvid, &cksum2);
    if( blob_compare(&cksum1, &cksum2) ){
      fossil_panic("tree checksum does not match repository after commit");
    }
  
    /* Verify that the manifest checksum matches the expected checksum */
    vfile_aggregate_checksum_manifest(nvid, &cksum2, &cksum1b);
    if( blob_compare(&cksum1, &cksum1b) ){
      fossil_panic("manifest checksum does not agree with manifest: "
                   "%b versus %b", &cksum1, &cksum1b);
    }
    if( blob_compare(&cksum1, &cksum2) ){
      fossil_panic("tree checksum does not match manifest after commit: "
                   "%b versus %b", &cksum1, &cksum2);
    }
  
    /* Verify that the commit did not modify any disk images. */
    vfile_aggregate_checksum_disk(nvid, &cksum2);
    if( blob_compare(&cksum1, &cksum2) ){
      fossil_panic("tree checksums before and after commit do not match");
    }
  }

  /* Clear the undo/redo stack */
  undo_reset();

  /* Commit */
  db_multi_exec("DELETE FROM vvar WHERE name='ci-comment'");
  if( testRun ){
    db_end_transaction(1);
    exit(1);
  }
  db_end_transaction(0);

  if( !g.markPrivate ){
    autosync(AUTOSYNC_PUSH);  
  }
  if( count_nonbranch_children(vid)>1 ){
    printf("**** warning: a fork has occurred *****\n");
  }
}

  return vid;
}

/*
** Load a vfile from a record ID.
*/
void load_vfile_from_rid(int vid){


  if( db_exists("SELECT 1 FROM vfile WHERE vid=%d", vid) ){
    return;
  }

  vfile_build(vid);

}

/*
** Set or clear the vfile.isexe flag for a file.
*/
static void set_or_clear_isexe(const char *zFilename, int vid, int onoff){
  static Stmt s;
  db_static_prepare(&s,
    "UPDATE vfile SET isexe=:isexe"
    " WHERE vid=:vid AND pathname=:path AND isexe!=:isexe"
  );
  db_bind_int(&s, ":isexe", onoff);
  db_bind_int(&s, ":vid", vid);
  db_bind_text(&s, ":path", zFilename);
  db_step(&s);
  db_reset(&s);
}

/*
** Set or clear the execute permission bit (as appropriate) for all
** files in the current check-out.
*/
void checkout_set_all_exe(int vid){
  Blob filename;
  int baseLen;
  Manifest *pManifest;
  ManifestFile *pFile;

  /* Check the EXE permission status of all files
  */
  pManifest = manifest_get(vid, CFTYPE_MANIFEST);
  if( pManifest==0 ) return;
  blob_zero(&filename);
  blob_appendf(&filename, "%s/", g.zLocalRoot);
  baseLen = blob_size(&filename);
  manifest_file_rewind(pManifest);
  while( (pFile = manifest_file_next(pManifest, 0))!=0 ){
    int isExe;
    blob_append(&filename, pFile->zName, -1);
    isExe = pFile->zPerm && strstr(pFile->zPerm, "x");
    file_setexe(blob_str(&filename), isExe);
    set_or_clear_isexe(pFile->zName, vid, isExe);
    blob_resize(&filename, baseLen);
  }
  blob_reset(&filename);
  manifest_destroy(pManifest);
}


/*
** If the "manifest" setting is true, then automatically generate
** files named "manifest" and "manifest.uuid" containing, respectively,
** the text of the manifest and the artifact ID of the manifest.
*/
void manifest_to_disk(int vid){
  char *zManFile;
  Blob manifest;
  Blob hash;





























  if( db_get_boolean("manifest",0) ){
    blob_zero(&manifest);
    content_get(vid, &manifest);

    zManFile = mprintf("%smanifest", g.zLocalRoot);
    blob_write_to_file(&manifest, zManFile);
    free(zManFile);


    blob_zero(&hash);
    sha1sum_blob(&manifest, &hash);
    zManFile = mprintf("%smanifest.uuid", g.zLocalRoot);
    blob_append(&hash, "\n", 1);
    blob_write_to_file(&hash, zManFile);
    free(zManFile);
    blob_reset(&hash);
  }else{
    if( !db_exists("SELECT 1 FROM vfile WHERE pathname='manifest'") ){
      zManFile = mprintf("%smanifest", g.zLocalRoot);
      unlink(zManFile);
      free(zManFile);
    }
    if( !db_exists("SELECT 1 FROM vfile WHERE pathname='manifest.uuid'") ){
      zManFile = mprintf("%smanifest.uuid", g.zLocalRoot);
      unlink(zManFile);
      free(zManFile);
    }
  }
    
}

/*
** COMMAND: checkout
** COMMAND: co
**
** Usage: %fossil checkout VERSION ?-f|--force? ?--keep?

  if( !keepFlag ){
    uncheckout(prior);
  }
  db_multi_exec("DELETE FROM vfile WHERE vid!=%d", vid);
  if( !keepFlag ){
    vfile_to_disk(vid, 0, 1, promptFlag);
  }
  checkout_set_all_exe(vid);
  manifest_to_disk(vid);
  db_lset_int("checkout", vid);
  undo_reset();
  db_multi_exec("DELETE FROM vmerge");
  if( !keepFlag ){
    vfile_aggregate_checksum_manifest(vid, &cksum1, &cksum1b);
    vfile_aggregate_checksum_disk(vid, &cksum2);

    return 0;
  }
  zRand = db_text(0, "SELECT hex(randomblob(10))");
  zOut = mprintf("out-%s", zRand);
  zIn = mprintf("in-%z", zRand);
  blob_write_to_file(pIn, zOut);
  zCmd = mprintf("%s %s %s", zBase, zIn, zOut);
  rc = fossil_system(zCmd);
  free(zCmd);
  if( rc==0 ){
    if( pOut==pIn ){
      blob_reset(pIn);
    }
    blob_zero(pOut);
    blob_read_from_file(pOut, zIn);

  int tlen = lineLength - indent;
  int si, sk, i, k;
  int doIndent = 0;
  char zBuf[400];
  int lineCnt = 0; 

  for(;;){
    while( fossil_isspace(zText[0]) ){ zText++; }
    if( zText[0]==0 ){
      if( doIndent==0 ){
        printf("\n");
        lineCnt = 1;
      }
      return lineCnt;
    }
    for(sk=si=i=k=0; zText[i] && k<tlen; i++){
      char c = zText[i];
      if( fossil_isspace(c) ){
        si = i;
        sk = k;
        if( k==0 || zBuf[k-1]!=' ' ){
          zBuf[k++] = ' ';
        }
      }else{
        zBuf[k] = c;
        if( c=='-' && k>0 && fossil_isalpha(zBuf[k-1]) ){
          si = i+1;
          sk = k+1;
        }
        k++;
      }
    }
    if( doIndent ){

*/
#define _LARGE_FILE       1
#ifndef _FILE_OFFSET_BITS
#  define _FILE_OFFSET_BITS 64
#endif
#define _LARGEFILE_SOURCE 1

#ifndef _RC_COMPILE_

/*
** System header files used by all modules
*/
#include <unistd.h>
#include <stdio.h>
#include <stdlib.h>
/* #include <ctype.h> // do not use - causes problems */
#include <string.h>
#include <stdarg.h>
#include <assert.h>

#endif

#if defined( __MINGW32__) ||  defined(__DMC__) || defined(_MSC_VER) || defined(__POCC__)
#  if defined(__DMC__)  || defined(_MSC_VER) || defined(__POCC__)
     typedef int socklen_t;
#  endif
#  ifndef _WIN32
#    define _WIN32
#  endif
#else
# include <sys/types.h>
# include <signal.h>
# include <pwd.h>
#endif

/*
** Define the compiler variant, used to compile the project
*/
#if !defined(COMPILER_NAME)
#  if defined(__DMC__)
#    define COMPILER_NAME "dmc"
#  elif defined(__POCC__)
#    if defined(_M_X64)
#      define COMPILER_NAME "pellesc64"
#    else
#      define COMPILER_NAME "pellesc32"
#    endif
#  elif defined(_MSC_VER)
#    define COMPILER_NAME "msc"
#  elif defined(__MINGW32__)
#    define COMPILER_NAME "mingw32"
#  elif defined(_WIN32)
#    define COMPILER_NAME "win32"
#  elif defined(__GNUC__)
#    define COMPILER_NAME "gcc-" __VERSION__
#  else
#    define COMPILER_NAME "unknown"
#  endif
#endif

#ifndef _RC_COMPILE_

#include "sqlite3.h"

/*
** Typedef for a 64-bit integer
*/
typedef sqlite3_int64 i64;
typedef sqlite3_uint64 u64;

/*
** Unsigned character type
*/
typedef unsigned char u8;











































/* In the timeline, check-in messages are truncated at the first space
** that is more than MX_CKIN_MSG from the beginning, or at the first
** paragraph break that is more than MN_CKIN_MSG from the beginning.
*/
#define MN_CKIN_MSG   100
#define MX_CKIN_MSG   300

/*
** The following macros are used to cast pointers to integers and
** integers to pointers.  The way you do this varies from one compiler
** to the next, so we have developed the following set of #if statements
** to generate appropriate macros for a wide range of compilers.
**
** The correct "ANSI" way to do this is to use the intptr_t type. 
** Unfortunately, that typedef is not available on all compilers, or
** if it is available, it requires an #include of specific headers
** that vary from one machine to the next.
*/
#if defined(__PTRDIFF_TYPE__)  /* This case should work for GCC */
# define FOSSIL_INT_TO_PTR(X)  ((void*)(__PTRDIFF_TYPE__)(X))
# define FOSSIL_PTR_TO_INT(X)  ((int)(__PTRDIFF_TYPE__)(X))
#elif !defined(__GNUC__)       /* Works for compilers other than LLVM */
# define FOSSIL_INT_TO_PTR(X)  ((void*)&((char*)0)[X])
# define FOSSIL_PTR_TO_INT(X)  ((int)(((char*)X)-(char*)0))
#else                          /* Generates a warning - but it always works */
# define FOSSIL_INT_TO_PTR(X)  ((void*)(X))
# define FOSSIL_PTR_TO_INT(X)  ((int)(X))
#endif


/* Unset the following to disable internationalization code. */
#ifndef FOSSIL_I18N
# define FOSSIL_I18N 1
#endif

#if FOSSIL_I18N
# include <locale.h>
# include <langinfo.h>
#endif
#ifndef CODESET
# undef FOSSIL_I18N
# define FOSSIL_I18N 0
#endif

#endif /* _RC_COMPILE_ */

  { "css",                    CONFIGSET_SKIN },
  { "header",                 CONFIGSET_SKIN },
  { "footer",                 CONFIGSET_SKIN },
  { "logo-mimetype",          CONFIGSET_SKIN },
  { "logo-image",             CONFIGSET_SKIN },
  { "project-name",           CONFIGSET_PROJ },
  { "project-description",    CONFIGSET_PROJ },
  { "manifest",               CONFIGSET_PROJ },
  { "index-page",             CONFIGSET_SKIN },
  { "timeline-block-markup",  CONFIGSET_SKIN },
  { "timeline-max-comment",   CONFIGSET_SKIN },
  { "ticket-table",           CONFIGSET_TKT  },
  { "ticket-common",          CONFIGSET_TKT  },
  { "ticket-newpage",         CONFIGSET_TKT  },
  { "ticket-viewpage",        CONFIGSET_TKT  },

      zPw = 0;
      g.dontKeepUrl = 1;
    }else{
      zServer = db_get("last-sync-url", 0);
      if( zServer==0 ){
        fossil_fatal("no server specified");
      }
      zPw = unobscure(db_get("last-sync-pw", 0));
    }
    url_parse(zServer);
    if( g.urlPasswd==0 && zPw ) g.urlPasswd = mprintf("%s", zPw);
    user_select();
    url_enable_proxy("via proxy: ");
    if( strncmp(zMethod, "push", n)==0 ){
      client_sync(0,0,0,0,mask);

void content_cache_insert(int rid, Blob *pBlob){
  struct cacheLine *p;
  if( contentCache.n>500 || contentCache.szTotal>50000000 ){
    content_cache_expire_oldest();
  }
  if( contentCache.n>=contentCache.nAlloc ){
    contentCache.nAlloc = contentCache.nAlloc*2 + 10;
    contentCache.a = fossil_realloc(contentCache.a,
                             contentCache.nAlloc*sizeof(contentCache.a[0]));

  }
  p = &contentCache.a[contentCache.n++];
  p->rid = rid;
  p->age = contentCache.nextAge++;
  contentCache.szTotal += blob_size(pBlob);
  p->content = *pBlob;
  blob_zero(pBlob);

  }else{
    int n = 1;
    int nAlloc = 10;
    int *a = 0;
    int mx;
    Blob delta, next;

    a = fossil_malloc( sizeof(a[0])*nAlloc );

    a[0] = rid;
    a[1] = nextRid;
    n = 1;
    while( !bag_find(&contentCache.inCache, nextRid)
        && (nextRid = findSrcid(nextRid))>0 ){
      n++;
      if( n>=nAlloc ){
        nAlloc = nAlloc*2 + 10;
        a = fossil_realloc(a, nAlloc*sizeof(a[0]));

      }
      a[n] = nextRid;
    }
    mx = n;
    rc = content_get(a[n], pBlob);
    n--;
    while( rc && n>=0 ){

  }else{
    bag_insert(&contentCache.available, rid);
  }
  return rc;
}

/*
** COMMAND: artifact
**
** Usage: %fossil artifact ARTIFACT-ID ?OUTPUT-FILENAME? ?OPTIONS?
**
** Extract an artifact by its SHA1 hash and write the results on
** standard output, or if the optional 4th argument is given, in
** the named output file.
**
** Options:
**
**    -R|--repository FILE       Extract artifacts from repository FILE
*/
void artifact_cmd(void){
  int rid;
  Blob content;
  const char *zFile;
  db_find_and_open_repository(1);
  if( g.argc!=4 && g.argc!=3 ) usage("ARTIFACT-ID ?FILENAME? ?OPTIONS?");
  zFile = g.argc==4 ? g.argv[3] : "-";

  rid = name_to_rid(g.argv[2]);
  content_get(rid, &content);
  blob_write_to_file(&content, zFile);
}

/*
** COMMAND:  test-content-rawget

  rid = name_to_rid(g.argv[2]);
  blob_zero(&content);
  db_blob(&content, "SELECT content FROM blob WHERE rid=%d", rid);
  blob_uncompress(&content, &content);
  blob_write_to_file(&content, zFile);
}

/*
** The following flag is set to disable the automatic calls to
** manifest_crosslink() when a record is dephantomized.  This
** flag can be set (for example) when doing a clone when we know
** that rebuild will be run over all records at the conclusion
** of the operation.
*/
static int ignoreDephantomizations = 0;

/*
** When a record is converted from a phantom to a real record,
** if that record has other records that are derived by delta,
** then call manifest_crosslink() on those other records.
**
** If the formerly phantom record or any of the other records
** derived by delta from the former phantom are a baseline manifest,
** then also invoke manifest_crosslink() on the delta-manifests
** associated with that baseline.
**
** Tail recursion is used to minimize stack depth.
*/
void after_dephantomize(int rid, int linkFlag){
  Stmt q;
  int nChildAlloc = 0;
  int *aChild = 0;
  Blob content;

  if( ignoreDephantomizations ) return;
  while( rid ){
    int nChildUsed = 0;
    int i;

    /* Parse the object rid itself */
    if( linkFlag ){

      content_get(rid, &content);
      manifest_crosslink(rid, &content);
      blob_reset(&content);
    }

    /* Parse all delta-manifests that depend on baseline-manifest rid */
    db_prepare(&q, "SELECT rid FROM orphan WHERE baseline=%d", rid);
    while( db_step(&q)==SQLITE_ROW ){
      int child = db_column_int(&q, 0);
      if( nChildUsed>=nChildAlloc ){
        nChildAlloc = nChildAlloc*2 + 10;
        aChild = fossil_realloc(aChild, nChildAlloc*sizeof(aChild));
      }
      aChild[nChildUsed++] = child;
    }
    db_finalize(&q);
    for(i=0; i<nChildUsed; i++){
      content_get(aChild[i], &content);
      manifest_crosslink(aChild[i], &content);
      blob_reset(&content);
    }
    if( nChildUsed ){
      db_multi_exec("DELETE FROM orphan WHERE baseline=%d", rid);
    }

    /* Recursively dephantomize all artifacts that are derived by
    ** delta from artifact rid */
    nChildUsed = 0;
    db_prepare(&q, "SELECT rid FROM delta WHERE srcid=%d", rid);
    while( db_step(&q)==SQLITE_ROW ){
      int child = db_column_int(&q, 0);
      if( nChildUsed>=nChildAlloc ){
        nChildAlloc = nChildAlloc*2 + 10;
        aChild = fossil_realloc(aChild, nChildAlloc*sizeof(aChild));

      }
      aChild[nChildUsed++] = child;
    }
    db_finalize(&q);
    for(i=1; i<nChildUsed; i++){
      after_dephantomize(aChild[i], 1);
    }

    /* Tail recursion for the common case where only a single artifact
    ** is derived by delta from rid... */
    rid = nChildUsed>0 ? aChild[0] : 0;
    linkFlag = 1;
  }
  free(aChild);
}

/*
** Turn dephantomization processing on or off.
*/
void content_enable_dephantomize(int onoff){
  ignoreDephantomizations = !onoff;
}

/*
** Write content into the database.  Return the record ID.  If the
** content is already in the database, just return the record ID.
**
** If srcId is specified, then pBlob is delta content from
** the srcId record.  srcId might be a phantom.

  char const *name;     /* Name of the setting */
  char const *var;      /* Internal variable name used by db_set() */
  int width;            /* Width of display.  0 for boolean values */
  char const *def;      /* Default value */
};
#endif /* INTERFACE */
struct stControlSettings const ctrlSettings[] = {
  { "auto-captcha",  "autocaptcha",    0, "on"                  },
  { "auto-shun",     0,                0, "on"                  },
  { "autosync",      0,                0, "on"                  },
  { "binary-glob",   0,               32, ""                    },
  { "clearsign",     0,                0, "off"                 },
  { "diff-command",  0,               16, ""                    },
  { "dont-push",     0,                0, "off"                 },
  { "editor",        0,               16, ""                    },
  { "gdiff-command", 0,               16, "gdiff"               },
  { "ignore-glob",   0,               40, ""                    },
  { "http-port",     0,               16, "8080"                },
  { "localauth",     0,                0, "off"                 },
  { "manifest",      0,                0, "off"                 },
  { "mtime-changes", 0,                0, "on"                  },
  { "pgp-command",   0,               32, "gpg --clearsign -o " },
  { "proxy",         0,               32, "off"                 },
  { "repo-cksum",    0,                0, "on"                  },
  { "ssh-command",   0,               32, ""                    },
  { "web-browser",   0,               32, ""                    },
  { 0,0,0,0 }
};

/*
** COMMAND: settings

**
**
**    auto-captcha     If enabled, the Login page provides a button to
**                     fill in the captcha password.  Default: on
**
**    auto-shun        If enabled, automatically pull the shunning list
**                     from a server to which the client autosyncs.
**                     Default: on
**
**    autosync         If enabled, automatically pull prior to commit
**                     or update and automatically push after commit or
**                     tag or branch creation.  If the value is "pullonly"
**                     then only pull operations occur automatically.
**                     Default: on
**
**    binary-glob      The VALUE is a comma-separated list of GLOB patterns
**                     that should be treated as binary files for merging
**                     purposes.  Example:   *.xml
**
**    clearsign        When enabled, fossil will attempt to sign all commits
**                     with gpg.  When disabled (the default), commits will
**                     be unsigned.  Default: off
**
**    diff-command     External command to run when performing a diff.
**                     If undefined, the internal text diff will be used.
**
**    dont-push        Prevent this repository from pushing from client to
**                     server.  Useful when setting up a private branch.
**

**                     Example:  *.o,*.obj,*.exe
**
**    localauth        If enabled, require that HTTP connections from
**                     127.0.0.1 be authenticated by password.  If
**                     false, all HTTP requests from localhost have
**                     unrestricted access to the repository.
**
**    manifest         If enabled, automatically create files "manifest" and
**                     "manifest.uuid" in every checkout.  The SQLite and
**                     Fossil repositories both require this.  Default: off.
**
**    mtime-changes    Use file modification times (mtimes) to detect when
**                     files have been modified.  (Default "on".)
**
**    pgp-command      Command used to clear-sign manifests at check-in.
**                     The default is "gpg --clearsign -o ".
**
**    proxy            URL of the HTTP proxy.  If undefined or "off" then
**                     the "http_proxy" environment variable is consulted.
**                     If the http_proxy environment variable is undefined
**                     then a direct HTTP connection is used.
**
**    repo-cksum       Compute checksums over all files in each checkout
**                     as a double-check of correctness.  Defaults to "on".
**                     Disable on large repositories for a performance
**                     improvement.
**
**    ssh-command      Command used to talk to a remote machine with
**                     the "ssh://" protocol.
**
**    web-browser      A shell command used to launch your preferred
**                     web browser when given a URL as an argument.
**                     Defaults to "start" on windows, "open" on Mac,

  }
  if( g.argc==2 ){
    for(i=0; ctrlSettings[i].name; i++){
      print_setting(ctrlSettings[i].name);
    }
  }else if( g.argc==3 || g.argc==4 ){
    const char *zName = g.argv[2];
    int isManifest;
    int n = strlen(zName);
    for(i=0; ctrlSettings[i].name; i++){
      if( strncmp(ctrlSettings[i].name, zName, n)==0 ) break;
    }
    if( !ctrlSettings[i].name ){
      fossil_fatal("no such setting: %s", zName);
    }
    isManifest = strcmp(ctrlSettings[i].name, "manifest")==0;
    if( isManifest && globalFlag ){
      fossil_fatal("cannot set 'manifest' globally");
    }
    if( unsetFlag ){
      db_unset(ctrlSettings[i].name, globalFlag);
    }else if( g.argc==4 ){
      db_set(ctrlSettings[i].name, g.argv[3], globalFlag);
    }else{
      isManifest = 0;
      print_setting(ctrlSettings[i].name);
    }
    if( isManifest ){
      manifest_to_disk(db_lget_int("checkout", 0));
    }
  }else{
    usage("?PROPERTY? ?VALUE?");
  }
}

/*
** The input in a a timespan measured in days.  Return a string which

}

/*
** Compute a 32-bit checksum on the N-byte buffer.  Return the result.
*/
static unsigned int checksum(const char *zIn, size_t N){
  const unsigned char *z = (const unsigned char *)zIn;
  unsigned sum0 = 0;
  unsigned sum1 = 0;
  unsigned sum2 = 0;
  unsigned sum3 = 0;
  while(N >= 16){
    sum0 += ((unsigned)z[0] + z[4] + z[8] + z[12]);
    sum1 += ((unsigned)z[1] + z[5] + z[9] + z[13]);
    sum2 += ((unsigned)z[2] + z[6] + z[10]+ z[14]);
    sum3 += ((unsigned)z[3] + z[7] + z[11]+ z[15]);
    z += 16;
    N -= 16;
  }
  while(N >= 4){
    sum0 += z[0];
    sum1 += z[1];
    sum2 += z[2];
    sum3 += z[3];
    z += 4;
    N -= 4;
  }
  sum3 += (sum2 << 8) + (sum1 << 16) + (sum0 << 24);
  switch(N){
    case 3:   sum3 += (z[2] << 8);
    case 2:   sum3 += (z[1] << 16);
    case 1:   sum3 += (z[0] << 24);
    default:  ;
  }
  return sum3;
}

/*
** Create a new delta.
**
** The delta is written into a preallocated buffer, zDelta, which 
** should be at least 60 bytes longer than the target file, zOut.

    return zDelta - zOrigDelta;
  }

  /* Compute the hash table used to locate matching sections in the
  ** source file.
  */
  nHash = lenSrc/NHASH;
  collide = fossil_malloc( nHash*2*sizeof(int) );

  landmark = &collide[nHash];
  memset(landmark, -1, nHash*sizeof(int));
  memset(collide, -1, nHash*sizeof(int));
  for(i=0; i<lenSrc-NHASH; i+=NHASH){
    int hv;
    hash_init(&h, &zSrc[i]);
    hv = hash_32bit(&h) % nHash;

  int lenSrc,            /* Length of the source file */
  const char *zDelta,    /* Delta to apply to the pattern */
  int lenDelta,          /* Length of the delta */
  char *zOut             /* Write the output into this preallocated buffer */
){
  unsigned int limit;
  unsigned int total = 0;
#ifndef FOSSIL_OMIT_DELTA_CKSUM_TEST
  char *zOrigOut = zOut;
#endif

  limit = getInt(&zDelta, &lenDelta);
  if( *zDelta!='\n' ){
    /* ERROR: size integer not terminated by "\n" */
    return -1;
  }
  zDelta++; lenDelta--;

        zDelta += cnt;
        lenDelta -= cnt;
        break;
      }
      case ';': {
        zDelta++; lenDelta--;
        zOut[0] = 0;
#ifndef FOSSIL_OMIT_DELTA_CKSUM_TEST
        if( cnt!=checksum(zOrigOut, total) ){
          /* ERROR:  bad checksum */
          return -1;
        }
#endif
        if( total!=limit ){
          /* ERROR: generated size does not match predicted size */
          return -1;
        }
        return total;
      }
      default: {

      }
      j = 0;
    }
  }
  if( j>LENGTH_MASK ){
    return 0;
  }
  a = fossil_malloc( nLine*sizeof(a[0]) );

  memset(a, 0, nLine*sizeof(a[0]) );
  if( n==0 ){
    *pnLine = 0;
    return a;
  }

  /* Fill in the array */
  for(i=0; i<nLine; i++){
    a[i].z = z;
    for(j=0; z[j] && z[j]!='\n'; j++){}
    k = j;
    while( ignoreWS && k>0 && fossil_isspace(z[k-1]) ){ k--; }
    for(h=0, x=0; x<k; x++){
      h = h ^ (h<<2) ^ z[x];
    }
    a[i].h = h = (h<<LENGTH_MASK_SZ) | k;;
    h2 = h % nLine;
    a[i].iNext = a[h2].iHash;
    a[h2].iHash = i+1;

  blob_append(pOut, "\n", 1);
}

/*
** Expand the size of aEdit[] array to hold nEdit elements.
*/
static void expandEdit(DContext *p, int nEdit){

  p->aEdit = fossil_realloc(p->aEdit, nEdit*sizeof(int));






  p->nEditAlloc = nEdit;
}

/*
** Append a new COPY/DELETE/INSERT triple.
*/
static void appendTriple(DContext *p, int nCopy, int nDel, int nIns){

  int i;

  memset(p, 0, sizeof(*p));
  p->c.aTo = break_into_lines(blob_str(pInput), blob_size(pInput),&p->c.nTo,1);
  if( p->c.aTo==0 ){
    return 1;
  }
  p->aOrig = fossil_malloc( sizeof(p->aOrig[0])*p->c.nTo );

  for(i=0; i<p->c.nTo; i++){
    p->aOrig[i].z = p->c.aTo[i].z;
    p->aOrig[i].n = p->c.aTo[i].h & LENGTH_MASK;
    p->aOrig[i].zSrc = 0;
  }
  p->nOrig = p->c.nTo;
  return 0;

** This file contains code used to implement the "diff" command
*/
#include "config.h"
#include "diffcmd.h"
#include <assert.h>

/*
** Diff option flags
*/
#define DIFF_NEWFILE  0x01    /* Treat non-existing fails as empty files */

#define DIFF_NOEOLWS  0x02    /* Ignore whitespace at the end of lines */














/*
** Show the difference between two files, one in memory and one on disk.
**
** The difference is the set of edits needed to transform pFile1 into
** zFile2.  The content of pFile1 is in memory.  zFile2 exists on disk.
**
** Use the internal diff logic if zDiffCmd is NULL.  Otherwise call the
** command zDiffCmd to do the diffing.
*/
static void diff_file(
  Blob *pFile1,             /* In memory content to compare from */
  const char *zFile2,       /* On disk content to compare to */
  const char *zName,        /* Display name of the file */
  const char *zDiffCmd,     /* Command for comparison */
  int ignoreEolWs           /* Ignore whitespace at end of line */
){
  if( zDiffCmd==0 ){
    Blob out;                 /* Diff output text */
    Blob file2;               /* Content of zFile2 */
    const char *zName2;       /* Name of zFile2 for display */

    /* Read content of zFile2 into memory */
    blob_zero(&file2);
    if( file_size(zFile2)<0 ){
      zName2 = "/dev/null";
    }else{
      blob_read_from_file(&file2, zFile2);
      zName2 = zName;
    }

    /* Compute and output the differences */
    blob_zero(&out);
    text_diff(pFile1, &file2, &out, 5, ignoreEolWs);
    printf("--- %s\n+++ %s\n", zName, zName2);
    printf("%s\n", blob_str(&out));

    /* Release memory resources */
    blob_reset(&file2);
    blob_reset(&out);
  }else{
    int cnt = 0;

    blob_zero(&cmd);
    blob_appendf(&cmd, "%s ", zDiffCmd);
    shell_escape(&cmd, blob_str(&nameFile1));
    blob_append(&cmd, " ", 1);
    shell_escape(&cmd, zFile2);

    /* Run the external diff command */
    fossil_system(blob_str(&cmd));

    /* Delete the temporary file and clean up memory used */
    unlink(blob_str(&nameFile1));
    blob_reset(&nameFile1);
    blob_reset(&cmd);
  }
}

    blob_zero(&cmd);
    blob_appendf(&cmd, "%s ", zDiffCmd);
    shell_escape(&cmd, zTemp1);
    blob_append(&cmd, " ", 1);
    shell_escape(&cmd, zTemp2);

    /* Run the external diff command */
    fossil_system(blob_str(&cmd));

    /* Delete the temporary file and clean up memory used */
    unlink(zTemp1);
    unlink(zTemp2);
    blob_reset(&cmd);
  }
}

** Run a diff between the version zFrom and files on disk.  zFrom might
** be NULL which means to simply show the difference between the edited
** files on disk and the check-out on which they are based.
*/
static void diff_all_against_disk(
  const char *zFrom,        /* Version to difference from */
  const char *zDiffCmd,     /* Use this diff command.  NULL for built-in */
  int diffFlags             /* Flags controlling diff output */
){
  int vid;
  Blob sql;
  Stmt q;
  int ignoreEolWs;          /* Ignore end-of-line whitespace */
  int asNewFile;            /* Treat non-existant files as empty files */

  ignoreEolWs = (diffFlags & DIFF_NOEOLWS)!=0;
  asNewFile = (diffFlags & DIFF_NEWFILE)!=0;
  vid = db_lget_int("checkout", 0);
  vfile_check_signature(vid, 1);
  blob_zero(&sql);
  db_begin_transaction();
  if( zFrom ){
    int rid = name_to_rid(zFrom);
    if( !is_a_version(rid) ){

  }
  db_prepare(&q, blob_str(&sql));
  while( db_step(&q)==SQLITE_ROW ){
    const char *zPathname = db_column_text(&q,0);
    int isDeleted = db_column_int(&q, 1);
    int isChnged = db_column_int(&q,2);
    int isNew = db_column_int(&q,3);
    int srcid = db_column_int(&q, 4);
    char *zFullName = mprintf("%s%s", g.zLocalRoot, zPathname);
    char *zToFree = zFullName;
    int showDiff = 1;
    if( isDeleted ){
      printf("DELETED  %s\n", zPathname);
      if( !asNewFile ){ showDiff = 0; zFullName = "/dev/null"; }
    }else if( access(zFullName, 0) ){
      printf("MISSING  %s\n", zPathname);
      if( !asNewFile ){ showDiff = 0; }
    }else if( isNew ){
      printf("ADDED    %s\n", zPathname);
      srcid = 0;
      if( !asNewFile ){ showDiff = 0; }
    }else if( isChnged==3 ){
      printf("ADDED_BY_MERGE %s\n", zPathname);

      srcid = 0;
      if( !asNewFile ){ showDiff = 0; }
    }
    if( showDiff ){
      Blob content;
      if( srcid>0 ){
        content_get(srcid, &content);
      }else{
        blob_zero(&content);
      }
      printf("Index: %s\n======================================="
             "============================\n",
             zPathname
      );
      diff_file(&content, zFullName, zPathname, zDiffCmd, ignoreEolWs);
      blob_reset(&content);
    }
    free(zToFree);
  }
  db_finalize(&q);
  db_end_transaction(1);  /* ROLLBACK */
}

/*
** Output the differences between two versions of a single file.

  historical_version_of_file(zFrom, zName, &v1, 0);
  historical_version_of_file(zTo, zName, &v2, 0);
  diff_file_mem(&v1, &v2, zName, zDiffCmd, ignoreEolWs);
  blob_reset(&v1);
  blob_reset(&v2);
  blob_reset(&fname);
}

/*
** Show the difference between two files identified by ManifestFile
** entries.
*/
static void diff_manifest_entry(
  struct ManifestFile *pFrom,
  struct ManifestFile *pTo,
  const char *zDiffCmd,
  int ignoreEolWs
){
  Blob f1, f2;
  int rid;
  const char *zName =  pFrom ? pFrom->zName : pTo->zName;
  printf("Index: %s\n======================================="
         "============================\n", zName);
  if( pFrom ){
    rid = uuid_to_rid(pFrom->zUuid, 0);
    content_get(rid, &f1);
  }else{
    blob_zero(&f1);
  }
  if( pTo ){
    rid = uuid_to_rid(pTo->zUuid, 0);
    content_get(rid, &f2);
  }else{
    blob_zero(&f2);
  }
  diff_file_mem(&f1, &f2, zName, zDiffCmd, ignoreEolWs);
  blob_reset(&f1);
  blob_reset(&f2);
}

/*
** Output the differences between two check-ins.
*/
static void diff_all_two_versions(
  const char *zFrom,
  const char *zTo,
  const char *zDiffCmd,
  int diffFlags
){
  Manifest *pFrom, *pTo;
  ManifestFile *pFromFile, *pToFile;
  int ignoreEolWs = (diffFlags & DIFF_NOEOLWS)!=0 ? 1 : 0;
  int asNewFlag = (diffFlags & DIFF_NEWFILE)!=0 ? 1 : 0;

  pFrom = manifest_get_by_name(zFrom, 0);
  manifest_file_rewind(pFrom);
  pFromFile = manifest_file_next(pFrom,0);
  pTo = manifest_get_by_name(zTo, 0);
  manifest_file_rewind(pTo);
  pToFile = manifest_file_next(pTo,0);

  while( pFromFile || pToFile ){
    int cmp;
    if( pFromFile==0 ){
      cmp = +1;
    }else if( pToFile==0 ){
      cmp = -1;
    }else{
      cmp = strcmp(pFromFile->zName, pToFile->zName);
    }
    if( cmp<0 ){
      printf("DELETED %s\n", pFromFile->zName);
      if( asNewFlag ){
        diff_manifest_entry(pFromFile, 0, zDiffCmd, ignoreEolWs);
      }
      pFromFile = manifest_file_next(pFrom,0);
    }else if( cmp>0 ){
      printf("ADDED   %s\n", pToFile->zName);
      if( asNewFlag ){
        diff_manifest_entry(0, pToFile, zDiffCmd, ignoreEolWs);
      }
      pToFile = manifest_file_next(pTo,0);
    }else if( strcmp(pFromFile->zUuid, pToFile->zUuid)==0 ){
      /* No changes */
      pFromFile = manifest_file_next(pFrom,0);
      pToFile = manifest_file_next(pTo,0);
    }else{


      printf("CHANGED %s\n", pFromFile->zName);








      diff_manifest_entry(pFromFile, pToFile, zDiffCmd, ignoreEolWs);


      pFromFile = manifest_file_next(pFrom,0);
      pToFile = manifest_file_next(pTo,0);
    }
  }
  manifest_destroy(pFrom);
  manifest_destroy(pTo);
}

/*
** COMMAND: diff
** COMMAND: gdiff
**
** Usage: %fossil diff|gdiff ?options? ?FILE?

** no "--to" option then the (possibly edited) files in the current check-out
** are used.
**
** The "-i" command-line option forces the use of the internal diff logic
** rather than any external diff program that might be configured using
** the "setting" command.  If no external diff program is configured, then
** the "-i" option is a no-op.  The "-i" option converts "gdiff" into "diff".
**
** The "-N" or "--new-file" option causes the complete text of added or
** deleted files to be displayed.
*/
void diff_cmd(void){
  int isGDiff;               /* True for gdiff.  False for normal diff */
  int isInternDiff;          /* True for internal diff */
  int hasNFlag;              /* True if -N or --new-file flag is used */
  const char *zFrom;         /* Source version number */
  const char *zTo;           /* Target version number */
  const char *zDiffCmd = 0;  /* External diff command. NULL for internal diff */
  int diffFlags = 0;         /* Flags to control the DIFF */

  isGDiff = g.argv[1][0]=='g';
  isInternDiff = find_option("internal","i",0)!=0;
  zFrom = find_option("from", "r", 1);
  zTo = find_option("to", 0, 1);
  hasNFlag = find_option("new-file","N",0)!=0;


  if( hasNFlag ) diffFlags |= DIFF_NEWFILE;
  if( zTo==0 ){
    db_must_be_within_tree();
    verify_all_options();
    if( !isInternDiff ){
      zDiffCmd = db_get(isGDiff ? "gdiff-command" : "diff-command", 0);
    }
    if( g.argc==3 ){
      diff_one_against_disk(zFrom, zDiffCmd, 0);
    }else{
      diff_all_against_disk(zFrom, zDiffCmd, diffFlags);
    }
  }else if( zFrom==0 ){
    fossil_fatal("must use --from if --to is present");
  }else{
    db_find_and_open_repository(1);
    verify_all_options();
    if( !isInternDiff ){
      zDiffCmd = db_get(isGDiff ? "gdiff-command" : "diff-command", 0);
    }
    if( g.argc==3 ){
      diff_one_two_versions(zFrom, zTo, zDiffCmd, 0);
    }else{
      diff_all_two_versions(zFrom, zTo, zDiffCmd, diffFlags);
    }
  }
}

  z = zName;
  for(i=0; zName[i]; i++){
    if( zName[i]=='.' ) z = &zName[i+1];
  }
  len = strlen(z);
  if( len<sizeof(zSuffix)-1 ){
    strcpy(zSuffix, z);
    for(i=0; zSuffix[i]; i++) zSuffix[i] = fossil_tolower(zSuffix[i]);
    first = 0;
    last = sizeof(aMime)/sizeof(aMime[0]);
    while( first<=last ){
      int c;
      i = (first+last)/2;
      c = strcmp(zSuffix, aMime[i].zSuffix);
      if( c==0 ) return aMime[i].zMimetype;

                    " WHERE vid=%d AND fname=%Q", vid, zName);
    if( rid==0 && db_exists("SELECT 1 FROM vcache WHERE vid=%d", vid) ){
      goto doc_not_found;
    }

    if( rid==0 ){
      Stmt s;
      Manifest *pM;
      ManifestFile *pFile;

      /* Add the vid baseline to the cache */
      if( db_int(0, "SELECT count(*) FROM vcache")>10000 ){
        db_multi_exec("DELETE FROM vcache");
      }
      pM = manifest_get(vid, CFTYPE_MANIFEST);


      if( pM==0 ){
        goto doc_not_found;
      }
      db_prepare(&s,
        "INSERT INTO vcache(vid,fname,rid)"
        " SELECT %d, :fname, rid FROM blob"
        "  WHERE uuid=:uuid",
        vid
      );
      manifest_file_rewind(pM);
      while( (pFile = manifest_file_next(pM,0))!=0 ){
        db_bind_text(&s, ":fname", pFile->zName);
        db_bind_text(&s, ":uuid", pFile->zUuid);
        db_step(&s);
        db_reset(&s);
      }
      db_finalize(&s);
      manifest_destroy(pM);

      /* Try again to find the file */
      rid = db_int(0, "SELECT rid FROM vcache"
                      " WHERE vid=%d AND fname=%Q", vid, zName);
    }
    if( rid==0 ){
      goto doc_not_found;

      case '&':   count += 5;       break;
      case '"':   count += 6;       break;
      default:    count++;          break;
    }
    i++;
  }
  i = 0;
  zOut = fossil_malloc( count+1 );

  while( n-->0 && (c = *zIn)!=0 ){
    switch( c ){
      case '<':   
        zOut[i++] = '&';
        zOut[i++] = 'l';
        zOut[i++] = 't';
        zOut[i++] = ';';

static char *EncodeHttp(const char *zIn, int n, int encodeSlash){
  int c;
  int i = 0;
  int count = 0;
  char *zOut;
  int other;
# define IsSafeChar(X)  \
     (fossil_isalnum(X) || (X)=='.' || (X)=='$' \
      || (X)=='~' || (X)=='-' || (X)=='_' || (X)==other)

  if( zIn==0 ) return 0;
  if( n<0 ) n = strlen(zIn);
  other = encodeSlash ? 'a' : '/';
  while( i<n && (c = zIn[i])!=0 ){
    if( IsSafeChar(c) || c==' ' ){
      count++;
    }else{
      count += 3;
    }
    i++;
  }
  i = 0;
  zOut = fossil_malloc( count+1 );

  while( n-->0 && (c = *zIn)!=0 ){
    if( IsSafeChar(c) ){
      zOut[i++] = c;
    }else if( c==' ' ){
      zOut[i++] = '+';
    }else{
      zOut[i++] = '%';

  if( nIn<0 ) nIn = strlen(zIn);
  for(i=n=0; i<nIn; i++){
    c = zIn[i];
    if( c==0 || c==' ' || c=='\n' || c=='\t' || c=='\r' || c=='\f' || c=='\v'
             || c=='\\' ) n++;
  }
  n += nIn;
  zOut = fossil_malloc( n+1 );
  if( zOut ){
    for(i=j=0; i<nIn; i++){
      int c = zIn[i];
      if( c==0 ){
        zOut[j++] = '\\';
        zOut[j++] = '0';
      }else if( c=='\\' ){
        zOut[j++] = '\\';
        zOut[j++] = '\\';
      }else if( fossil_isspace(c) ){
        zOut[j++] = '\\';
        switch( c ){
          case '\n':  c = 'n'; break;
          case ' ':   c = 's'; break;
          case '\t':  c = 't'; break;
          case '\r':  c = 'r'; break;
          case '\v':  c = 'v'; break;

}

/*
** Decode a fossilized string in-place.
*/
void defossilize(char *z){
  int i, j, c;
  for(i=0; (c=z[i])!=0 && c!='\\'; i++){}
  if( c==0 ) return;
  for(j=i; (c=z[i])!=0; i++){
    if( c=='\\' && z[i+1] ){
      i++;
      switch( z[i] ){
        case 'n':  c = '\n';  break;
        case 's':  c = ' ';   break;
        case 't':  c = '\t';  break;
        case 'r':  c = '\r';  break;

char *encode64(const char *zData, int nData){
  char *z64;
  int i, n;

  if( nData<=0 ){
    nData = strlen(zData);
  }
  z64 = fossil_malloc( (nData*4)/3 + 8 );
  for(i=n=0; i+2<nData; i+=3){
    z64[n++] = zBase[ (zData[i]>>2) & 0x3f ];
    z64[n++] = zBase[ ((zData[i]<<4) & 0x30) | ((zData[i+1]>>4) & 0x0f) ];
    z64[n++] = zBase[ ((zData[i+1]<<2) & 0x3c) | ((zData[i+2]>>6) & 0x03) ];
    z64[n++] = zBase[ zData[i+2] & 0x3f ];
  }
  if( i+1<nData ){

  if( !isInit ){
    for(i=0; i<128; i++){ trans[i] = 0; }
    for(i=0; zBase[i]; i++){ trans[zBase[i] & 0x7f] = i; }
    isInit = 1;
  }
  n64 = strlen(z64);
  while( n64>0 && z64[n64-1]=='=' ) n64--;
  zData = fossil_malloc( (n64*3)/4 + 4 );
  for(i=j=0; i+3<n64; i+=4){
    a = trans[z64[i] & 0x7f];
    b = trans[z64[i+1] & 0x7f];
    c = trans[z64[i+2] & 0x7f];
    d = trans[z64[i+3] & 0x7f];
    zData[j++] = ((a<<2) & 0xfc) | ((b>>4) & 0x03);
    zData[j++] = ((b<<4) & 0xf0) | ((c>>2) & 0x0f);

*/
void canonical16(char *z, int n){
  while( *z && n-- ){
    *z = zEncode[zDecode[(*z)&0x7f]&0x1f];
    z++;
  }
}

/* Randomness used for XOR-ing by the obscure() and unobscure() routines */
static const unsigned char aObscurer[16] = {
    0xa7, 0x21, 0x31, 0xe3, 0x2a, 0x50, 0x2c, 0x86,
    0x4c, 0xa4, 0x52, 0x25, 0xff, 0x49, 0x35, 0x85
};
 

/*
** Obscure plain text so that it is not easily readable.
**
** This is used for storing sensitive information (such as passwords) in a
** way that prevents their exposure through idle browsing.  This is not
** encryption.  Anybody who really wants the password can still get it.
**
** The text is XOR-ed with a repeating pattern then converted to hex.
** Space to hold the returned string is obtained from malloc and should
** be freed by the caller.
*/
char *obscure(const char *zIn){
  int n, i;
  unsigned char salt;
  char *zOut;
  
  if( zIn==0 ) return 0;
  n = strlen(zIn);
  zOut = fossil_malloc( n*2+3 );
  sqlite3_randomness(1, &salt);
  zOut[n+1] = (char)salt;
  for(i=0; i<n; i++) zOut[i+n+2] = zIn[i]^aObscurer[i&0x0f]^salt;
  encode16((unsigned char*)&zOut[n+1], (unsigned char*)zOut, n+1);
  return zOut;
}

/*
** Undo the obscuring of text performed by obscure().  Or, if the input is
** not hexadecimal (meaning the input is not the output of obscure()) then
** do the equivalent of strdup().
**
** The result is memory obtained from malloc that should be freed by the caller. 
*/
char *unobscure(const char *zIn){
  int n, i;
  unsigned char salt;
  char *zOut;
  
  if( zIn==0 ) return 0;
  n = strlen(zIn);
  zOut = fossil_malloc( n + 1 );
  if( n<2
    || decode16((unsigned char*)zIn, &salt, 2)
    || decode16((unsigned char*)&zIn[2], (unsigned char*)zOut, n-2)
  ){
    memcpy(zOut, zIn, n+1);
  }else{
    n = n/2 - 1;
    for(i=0; i<n; i++) zOut[i] = zOut[i]^aObscurer[i&0x0f]^salt;
    zOut[n] = 0;
  }
  return zOut;
}

/*
** Command to test obscure() and unobscure().  These commands are also useful
** utilities for decoding passwords found in the database.
**
** COMMAND: test-obscure
*/
void test_obscure_cmd(void){
  int i;
  char *z, *z2;
  for(i=2; i<g.argc; i++){
    z = obscure(g.argv[i]);
    z2 = unobscure(z);
    printf("OBSCURE:    %s -> %s (%s)\n", g.argv[i], z, z2);
    free(z);
    free(z2);
    z = unobscure(g.argv[i]);
    printf("UNOBSCURE:  %s -> %s\n", g.argv[i], z);
    free(z);
  }
}

    @ [%s(zShort)]
  }
  free(zEventId);
}

/*
** WEBPAGE: event
** URL: /event
** PARAMETERS:
**
**  name=EVENTID      // Identify the event to display EVENTID must be complete
**  detail=BOOLEAN    // Show details if TRUE.  Default is FALSE.  Optional.
**  aid=ARTIFACTID    // Which specific version of the event.  Optional.
**
** Display an existing event identified by EVENTID
*/
void event_page(void){
  int rid = 0;             /* rid of the event artifact */
  char *zUuid;             /* UUID corresponding to rid */
  const char *zEventId;    /* Event identifier */
  char *zETime;            /* Time of the event */
  char *zATime;            /* Time the artifact was created */
  int specRid;             /* rid specified by aid= parameter */
  int prevRid, nextRid;    /* Previous or next edits of this event */
  Manifest *pEvent;        /* Parsed event artifact */

  Blob fullbody;           /* Complete content of the event body */
  Blob title;              /* Title extracted from the event body */
  Blob tail;               /* Event body that comes after the title */
  Stmt q1;                 /* Query to search for the event */
  int showDetail;          /* True to show details */

  zEventId = P("name");
  if( zEventId==0 ){ fossil_redirect_home(); return; }
  zUuid = (char*)P("aid");
  specRid = zUuid ? uuid_to_rid(zUuid, 0) : 0;
  rid = nextRid = prevRid = 0;
  db_prepare(&q1,
     "SELECT rid FROM tagxref"
     " WHERE tagid=(SELECT tagid FROM tag WHERE tagname GLOB 'event-%q*')"
     " ORDER BY mtime DESC",
     zEventId
  );
  while( db_step(&q1)==SQLITE_ROW ){
    nextRid = rid;
    rid = db_column_int(&q1, 0);
    if( specRid==0 || specRid==rid ){

    return;
  }
  zUuid = db_text(0, "SELECT uuid FROM blob WHERE rid=%d", rid);
  showDetail = atoi(PD("detail","0"));

  /* Extract the event content.
  */


  pEvent = manifest_get(rid, CFTYPE_EVENT);

  if( pEvent==0 ){
    fossil_panic("Object #%d is not an event", rid);
  }
  blob_init(&fullbody, pEvent->zWiki, -1);
  if( wiki_find_title(&fullbody, &title, &tail) ){
    style_header(blob_str(&title));
  }else{
    style_header("Event %S", zEventId);
    tail = fullbody;
  }
  if( g.okWrWiki && g.okWrite && nextRid==0 ){
    style_submenu_element("Edit", "Edit", "%s/eventedit?name=%s",
                          g.zTop, zEventId);
  }
  zETime = db_text(0, "SELECT datetime(%.17g)", pEvent->rEventDate);
  style_submenu_element("Context", "Context", "%s/timeline?c=%T",
                        g.zTop, zETime);
  if( g.okHistory ){
    if( showDetail ){
      style_submenu_element("Plain", "Plain", "%s/event?name=%s&aid=%s",
                            g.zTop, zEventId, zUuid);
      if( nextRid ){

  }

  if( showDetail && g.okHistory ){
    int i;
    const char *zClr = 0;
    Blob comment;

    zATime = db_text(0, "SELECT datetime(%.17g)", pEvent->rDate);
    @ <p>Event [<a href="%s(g.zTop)/artifact/%s(zUuid)">%S(zUuid)</a>] at
    @ [<a href="%s(g.zTop)/timeline?c=%T(zETime)">%s(zETime)</a>]
    @ entered by user <b>%h(pEvent->zUser)</b> on
    @ [<a href="%s(g.zTop)/timeline?c=%T(zATime)">%s(zATime)</a>]:</p>
    @ <blockquote>
    for(i=0; i<pEvent->nTag; i++){
      if( strcmp(pEvent->aTag[i].zName,"+bgcolor")==0 ){
        zClr = pEvent->aTag[i].zValue;
      }
    }
    if( zClr && zClr[0]==0 ) zClr = 0;
    if( zClr ){
      @ <div style="background-color: %h(zClr);">
    }else{
      @ <div>
    }
    blob_init(&comment, pEvent->zComment, -1);
    wiki_convert(&comment, 0, WIKI_INLINE);
    blob_reset(&comment);
    @ </div>
    @ </blockquote><hr />
  }  

  wiki_convert(&tail, 0, 0);
  style_footer();
  manifest_destroy(pEvent);
}

/*
** WEBPAGE: eventedit
** URL: /eventedit?name=EVENTID
**
** Edit an event.  If name is omitted, create a new event.

  if( strcmp(zClr,"##")==0 ) zClr = PD("cclr","");


  /* If editing an existing event, extract the key fields to use as
  ** a starting point for the edit.
  */
  if( rid && (zBody==0 || zETime==0 || zComment==0 || zTags==0) ){
    Manifest *pEvent;



    pEvent = manifest_get(rid, CFTYPE_EVENT);

    if( pEvent && pEvent->type==CFTYPE_EVENT ){
      if( zBody==0 ) zBody = pEvent->zWiki;
      if( zETime==0 ){
        zETime = db_text(0, "SELECT datetime(%.17g)", pEvent->rEventDate);
      }
      if( zComment==0 ) zComment = pEvent->zComment;
    }
    if( zTags==0 ){
      zTags = db_text(0,
        "SELECT group_concat(substr(tagname,5),', ')"
        "  FROM tagxref, tag"
        " WHERE tagxref.rid=%d"
        "   AND tagxref.tagid=tag.tagid"

      blob_zero(&tags);
      blob_append(&tags, zTags, -1); 

      /* Collapse all sequences of whitespace and "," characters into
      ** a single space character */
      zBlob = blob_str(&tags);
      for(i=j=0; zBlob[i]; i++, j++){
        if( fossil_isspace(zBlob[i]) || zBlob[i]==',' ){
          while( fossil_isspace(zBlob[i+1]) ){ i++; }
          zBlob[j] = ' ';
        }else{
          zBlob[j] = zBlob[i];
        }
      }
      blob_resize(&tags, j);

    "   AND event.objid=mlink.mid"
    " ORDER BY event.mtime DESC /*sort*/",
    TAG_BRANCH,
    zFilename
  );
  blob_zero(&title);
  blob_appendf(&title, "History of ");
  hyperlinked_path(zFilename, &title, 0);
  @ <h2>%b(&title)</h2>
  blob_reset(&title);
  pGraph = graph_init();
  @ <div id="canvas" style="position:relative;width:1px;height:1px;"></div>
  @ <table class="timelineTable">
  while( db_step(&q)==SQLITE_ROW ){
    const char *zDate = db_column_text(&q, 0);

#endif

/*
** Malloc for zeroed space.  Panic if unable to provide the
** requested space.
*/
void *safeMalloc(int nByte){
  void *p = fossil_malloc(nByte);

  memset(p, 0, nByte);
  return p;
}

/*
** Create and initialize a GraphContext
*/

*/
static char *persistBranchName(GraphContext *p, const char *zBranch){
  int i;
  for(i=0; i<p->nBranch; i++){
    if( strcmp(zBranch, p->azBranch[i])==0 ) return p->azBranch[i];
  }
  p->nBranch++;
  p->azBranch = fossil_realloc(p->azBranch, sizeof(char*)*p->nBranch);

  p->azBranch[p->nBranch-1] = mprintf("%s", zBranch);
  return p->azBranch[p->nBranch-1];
}

/*
** Add a new row to the graph context.  Rows are added from top to bottom.
*/

    /* Password failure while doing a sync from the web interface */
    cgi_printf("*** incorrect or missing password for user %h\n", zLogin);
    zPw = 0;
  }else{
    /* Password failure while doing a sync from the command-line interface */
    url_prompt_for_password();
    zPw = g.urlPasswd;
    if( !g.dontKeepUrl ) db_set("last-sync-pw", obscure(zPw), 0);
  }

  /* The login card wants the SHA1 hash of the password, so convert the
  ** password to its SHA1 hash it it isn't already a SHA1 hash.
  **
  ** Except, if the password begins with "*" then use the characters
  ** after the "*" as a cleartext password.  Put an "*" at the beginning

  blob_zero(pHdr);
  i = strlen(g.urlPath);
  if( i>0 && g.urlPath[i-1]=='/' ){
    zSep = "";
  }else{
    zSep = "/";
  }
  blob_appendf(pHdr, "POST %s%sxfer/xfer HTTP/1.0\r\n", g.urlPath, zSep);
  if( g.urlProxyAuth ){
    blob_appendf(pHdr, "Proxy-Authorization: %s\n", g.urlProxyAuth);
  }
  blob_appendf(pHdr, "Host: %s\r\n", g.urlHostname);
  blob_appendf(pHdr, "User-Agent: Fossil/" MANIFEST_VERSION "\r\n");
  if( g.fHttpTrace ){
    blob_appendf(pHdr, "Content-Type: application/x-fossil-debug\r\n");

      }
      if( iHttpVersion==0 ){
        closeConnection = 1;
      }else{
        closeConnection = 0;
      }
    }else if( strncasecmp(zLine, "content-length:", 15)==0 ){
      for(i=15; fossil_isspace(zLine[i]); i++){}
      iLength = atoi(&zLine[i]);
    }else if( strncasecmp(zLine, "connection:", 11)==0 ){
      char c;
      for(i=11; fossil_isspace(zLine[i]); i++){}
      c = zLine[i];
      if( c=='c' || c=='C' ){
        closeConnection = 1;
      }else if( c=='k' || c=='K' ){
        closeConnection = 0;
      }
    }else if( rc==302 && strncasecmp(zLine, "location:", 9)==0 ){
      int i, j;
      for(i=9; zLine[i] && zLine[i]==' '; i++){}
      if( zLine[i]==0 ) fossil_fatal("malformed redirect: %s", zLine);
      j = strlen(zLine) - 1; 
      while( j>4 && strcmp(&zLine[j-4],"/xfer")==0 ){
         j -= 4;
         zLine[j] = 0;
      }
      fossil_print("redirect to %s\n", &zLine[i]);
      url_parse(&zLine[i]);
      transport_close();
      http_exchange(pSend, pReply, useLogin);
      return;
    }else if( strncasecmp(zLine, "content-type: text/html", 23)==0 ){
      isError = 1;

      }
      z[j] = z[i];
    }
    z[j] = 0;
    fossil_fatal("server sends error: %s", z);
  }
  if( g.fHttpTrace ){
    /*printf("HTTP RECEIVE:\n%s\n=======================\n",blob_str(pReply));*/
  }else{
    blob_uncompress(pReply, pReply);
  }

  /*
  ** Close the connection to the server if appropriate.
  **

void ssl_global_init(void){
  if( sslIsInit==0 ){
    SSL_library_init();
    SSL_load_error_strings();
    ERR_load_BIO_strings();
    OpenSSL_add_all_algorithms();    
    sslCtx = SSL_CTX_new(SSLv23_client_method());
    X509_STORE_set_default_paths(SSL_CTX_get_cert_store(sslCtx));
    sslIsInit = 1;
  }
}

/*
** Call this routine to shutdown the SSL module prior to program exit.
*/

*/
static void sshin_read(char *zBuf, int szBuf){
  int got;
  zBuf[0] = 0;
  got = read(sshIn, zBuf, szBuf-1);
  while( got>=0 ){
    zBuf[got] = 0;
    if( got==0 || !fossil_isspace(zBuf[got-1]) ) break;
    got--;
  }
}

/*
** Default SSH command
*/

    fprintf(sshOut, "\n\n");
  }else if( g.urlIsFile ){
    char *zCmd;
    fclose(transport.pFile);
    zCmd = mprintf("\"%s\" http \"%s\" \"%s\" \"%s\" 127.0.0.1",
       g.argv[0], g.urlName, transport.zOutFile, transport.zInFile
    );
    fossil_system(zCmd);
    free(zCmd);
    transport.pFile = fopen(transport.zInFile, "rb");
  }
}

/*
** This routine is called when the inbound message has been received

** The buffer itself might be moved.  And the transport.iCursor value
** might be reset to 0.
*/
static void transport_load_buffer(int N){
  int i, j;
  if( transport.nAlloc==0 ){
    transport.nAlloc = N;
    transport.pBuf = fossil_malloc( N );

    transport.iCursor = 0;
    transport.nUsed = 0;
  }
  if( transport.iCursor>0 ){
    for(i=0, j=transport.iCursor; j<transport.nUsed; i++, j++){
      transport.pBuf[i] = transport.pBuf[j];
    }
    transport.nUsed -= transport.iCursor;
    transport.iCursor = 0;
  }
  if( transport.nUsed + N > transport.nAlloc ){
    char *pNew;
    transport.nAlloc = transport.nUsed + N;
    pNew = fossil_realloc(transport.pBuf, transport.nAlloc);

    transport.pBuf = pNew;
  }
  if( N>0 ){
    i = transport_fetch(&transport.pBuf[transport.nUsed], N);
    if( i>0 ){
      transport.nUsed += i;
    }

        transport.pBuf[i] = 0;
        transport.iCursor = i;
        break;
      }
    }
    if( transport.pBuf[i]=='\n' ){
      transport.iCursor = i+1;
      while( i>=iStart && fossil_isspace(transport.pBuf[i]) ){
        transport.pBuf[i] = 0;
        i--;
      }
      break;
    }
    i++;
  }

  }
}


/*
** Append the difference between two RIDs to the output
*/
static void append_diff(const char *zFrom, const char *zTo){
  int fromid;
  int toid;
  Blob from, to, out;
  if( zFrom ){
    fromid = uuid_to_rid(zFrom, 0);
    content_get(fromid, &from);
  }else{
    blob_zero(&from);
  }
  if( zTo ){
    toid = uuid_to_rid(zTo, 0);
    content_get(toid, &to);
  }else{
    blob_zero(&to);
  }
  blob_zero(&out);
  text_diff(&from, &to, &out, 5, 1);
  @ %h(blob_str(&out))
  blob_reset(&from);
  blob_reset(&to);
  blob_reset(&out);  
}

  if( !g.okHistory ){
    if( zNew==0 ){
      @ <p>Deleted %h(zName)</p>
    }else if( zOld==0 ){
      @ <p>Added %h(zName)</p>
    }else{
      @ <p>Changes to %h(zName)</p>
    }
    if( showDiff ){


      @ <blockquote><pre>
      append_diff(zOld, zNew);
      @ </pre></blockquote>
    }
  }else{
    if( zOld && zNew ){
      @ <p>Modified <a href="%s(g.zTop)/finfo?name=%T(zName)">%h(zName)</a>
      @ from <a href="%s(g.zTop)/artifact/%s(zOld)">[%S(zOld)]</a>
      @ to <a href="%s(g.zTop)/artifact/%s(zNew)">[%S(zNew)].</a>
    }else if( zOld ){

      @ <p>Deleted <a href="%s(g.zTop)/finfo?name=%T(zName)">%h(zName)</a>
      @ version <a href="%s(g.zTop)/artifact/%s(zOld)">[%S(zOld)]</a>
    }else{

      @ <p>Added <a href="%s(g.zTop)/finfo?name=%T(zName)">%h(zName)</a>
      @ version <a href="%s(g.zTop)/artifact/%s(zNew)">[%S(zNew)]</a>
    }
    if( showDiff ){
      @ <blockquote><pre>
      append_diff(zOld, zNew);
      @ </pre></blockquote>
    }else if( zOld && zNew ){
      @ &nbsp;&nbsp;
      @ <a href="%s(g.zTop)/fdiff?v1=%S(zOld)&amp;v2=%S(zNew)">[diff]</a>
    }
    @ </p>






  }
}


/*
** WEBPAGE: vinfo
** WEBPAGE: ci

  }else{
    style_header("Wiki Information");
    rid = 0;
  }
  db_finalize(&q);
  showTags(rid, "wiki-*");
  if( rid ){

    Manifest *pWiki;


    pWiki = manifest_get(rid, CFTYPE_WIKI);

    if( pWiki ){
      Blob wiki;
      blob_init(&wiki, pWiki->zWiki, -1);
      @ <div class="section">Content</div>
      wiki_convert(&wiki, 0, 0);
      blob_reset(&wiki);
    }
    manifest_destroy(pWiki);
  }
  style_footer();
}

/*
** Show a webpage error message
*/

  style_footer();
}

/*
** Find an checkin based on query parameter zParam and parse its
** manifest.  Return the number of errors.
*/
static Manifest *vdiff_parse_manifest(const char *zParam, int *pRid){
  int rid;


  *pRid = rid = name_to_rid_www(zParam);
  if( rid==0 ){
    webpage_error("Missing \"%s\" query parameter.", zParam);
    return 0;
  }
  if( !is_a_version(rid) ){
    webpage_error("Artifact %s is not a checkin.", P(zParam));
    return 0;
  }


  return manifest_get(rid, CFTYPE_MANIFEST);
}

/*
** Output a description of a check-in
*/
void checkin_description(int rid){
  Stmt q;

** URL: /vdiff?from=UUID&to=UUID&detail=BOOLEAN
**
** Show all differences between two checkins.  
*/
void vdiff_page(void){
  int ridFrom, ridTo;
  int showDetail = 0;
  Manifest *pFrom, *pTo;
  ManifestFile *pFileFrom, *pFileTo;

  login_check_credentials();
  if( !g.okRead ){ login_needed(); return; }
  login_anonymous_available();

  pFrom = vdiff_parse_manifest("from", &ridFrom);
  if( pFrom==0 ) return;
  pTo = vdiff_parse_manifest("to", &ridTo);
  if( pTo==0 ) return;
  showDetail = atoi(PD("detail","0"));
  style_header("Check-in Differences");
  @ <h2>Difference From:</h2><blockquote>
  checkin_description(ridFrom);
  @ </blockquote><h2>To:</h2><blockquote>
  checkin_description(ridTo);
  @ </blockquote><hr /><p>

  manifest_file_rewind(pFrom);
  pFileFrom = manifest_file_next(pFrom, 0);
  manifest_file_rewind(pTo);
  pFileTo = manifest_file_next(pTo, 0);
  while( pFileFrom || pFileTo ){
    int cmp;
    if( pFileFrom==0 ){
      cmp = +1;
    }else if( pFileTo==0 ){
      cmp = -1;
    }else{
      cmp = strcmp(pFileFrom->zName, pFileTo->zName);
    }
    if( cmp<0 ){
      append_file_change_line(pFileFrom->zName, 
                              pFileFrom->zUuid, 0, 0);
      pFileFrom = manifest_file_next(pFrom, 0);
    }else if( cmp>0 ){
      append_file_change_line(pFileTo->zName, 
                              0, pFileTo->zUuid, 0);
      pFileTo = manifest_file_next(pTo, 0);
    }else if( strcmp(pFileFrom->zUuid, pFileTo->zUuid)==0 ){
      /* No changes */
      pFileFrom = manifest_file_next(pFrom, 0);
      pFileTo = manifest_file_next(pTo, 0);
    }else{
      append_file_change_line(pFileFrom->zName, 
                              pFileFrom->zUuid,
                              pFileTo->zUuid, showDetail);
      pFileFrom = manifest_file_next(pFrom, 0);
      pFileTo = manifest_file_next(pTo, 0);
    }
  }
  manifest_destroy(pFrom);
  manifest_destroy(pTo);

  style_footer();
}

/*
** Write a description of an object to the www reply.
**

** Look for "ci" and "filename" query parameters.  If found, try to
** use them to extract the record ID of an artifact for the file.
*/
int artifact_from_ci_and_filename(void){
  const char *zFilename;
  const char *zCI;
  int cirid;

  Manifest *pManifest;

  ManifestFile *pFile;

  zCI = P("ci");
  if( zCI==0 ) return 0;
  zFilename = P("filename");
  if( zFilename==0 ) return 0;
  cirid = name_to_rid_www("ci");
  pManifest = manifest_get(cirid, CFTYPE_MANIFEST);
  if( pManifest==0 ) return 0;
  manifest_file_rewind(pManifest);
  while( (pFile = manifest_file_next(pManifest,0))!=0 ){
    if( strcmp(zFilename, pFile->zName)==0 ){
      int rid = db_int(0, "SELECT rid FROM blob WHERE uuid=%Q", pFile->zUuid);
      manifest_destroy(pManifest);
      return rid;
    }
  }
  return 0;
}


/*

** WEBPAGE: tinfo
** URL: /tinfo?name=ARTIFACTID
**
** Show the details of a ticket change control artifact.
*/
void tinfo_page(void){
  int rid;

  char *zDate;
  const char *zUuid;
  char zTktName[20];
  Manifest *pTktChng;

  login_check_credentials();
  if( !g.okRdTkt ){ login_needed(); return; }
  rid = name_to_rid_www("name");
  if( rid==0 ){ fossil_redirect_home(); }
  zUuid = db_text("", "SELECT uuid FROM blob WHERE rid=%d", rid);
  if( g.okAdmin ){
    if( db_exists("SELECT 1 FROM shun WHERE uuid='%s'", zUuid) ){
      style_submenu_element("Unshun","Unshun", "%s/shun?uuid=%s&sub=1",
            g.zTop, zUuid);
    }else{
      style_submenu_element("Shun","Shun", "%s/shun?shun=%s#addshun",
            g.zTop, zUuid);
    }
  }
  pTktChng = manifest_get(rid, CFTYPE_TICKET);
  if( pTktChng==0 ){



    fossil_redirect_home();
  }
  style_header("Ticket Change Details");
  zDate = db_text(0, "SELECT datetime(%.12f)", pTktChng->rDate);
  memcpy(zTktName, pTktChng->zTicketUuid, 10);
  zTktName[10] = 0;
  if( g.okHistory ){
    @ <h2>Changes to ticket
    @ <a href="%s(pTktChng->zTicketUuid)">%s(zTktName)</a></h2>
    @
    @ <p>By %h(pTktChng->zUser) on %s(zDate).  See also:
    @ <a href="%s(g.zTop)/artifact/%T(zUuid)">artifact content</a>, and
    @ <a href="%s(g.zTop)/tkthistory/%s(pTktChng->zTicketUuid)">ticket
    @ history</a></p>
  }else{
    @ <h2>Changes to ticket %s(zTktName)</h2>
    @
    @ <p>By %h(pTktChng->zUser) on %s(zDate).
    @ </p>
  }
  @
  @ <ol>
  free(zDate);
  ticket_output_change_artifact(pTktChng);
  manifest_destroy(pTktChng);
  style_footer();
}


/*
** WEBPAGE: info
** URL: info/ARTIFACTID

/*
** Return the name of the login cookie
*/
static char *login_cookie_name(void){
  static char *zCookieName = 0;
  if( zCookieName==0 ){
    unsigned int h = 0;
    const char *z = g.zBaseURL;
    while( *z ){ h = (h<<3) ^ (h>>26) ^ *(z++); }
    zCookieName = mprintf("fossil_login_%08x", h);

  }
  return zCookieName;
}

/*
** Redirect to the page specified by the "g" query parameter.
** Or if there is no "g" query parameter, redirect to the homepage.

    g.noPswd = 1;
    strcpy(g.zCsrfToken, "localhost");
  }

  /* Check the login cookie to see if it matches a known valid user.
  */
  if( uid==0 && (zCookie = P(login_cookie_name()))!=0 ){
    if( fossil_isdigit(zCookie[0]) ){
      /* Cookies of the form "uid/randomness".  There must be a
      ** corresponding entry in the user table. */
      uid = db_int(0, 
            "SELECT uid FROM user"
            " WHERE uid=%d"
            "   AND cookie=%Q"
            "   AND ipaddr=%Q"

/*
** This procedure runs first.
*/
int main(int argc, char **argv){
  const char *zCmdName = "unknown";
  int idx;
  int rc;
  int mightBeCgi;

  sqlite3_config(SQLITE_CONFIG_LOG, fossil_sqlite_log, 0);
  g.now = time(0);
  g.argc = argc;
  g.argv = argv;
  mightBeCgi = getenv("GATEWAY_INTERFACE")!=0;
  if( argc<2 ){
    if( mightBeCgi ){
      zCmdName = "cgi";
    }else{
      fprintf(stderr, "Usage: %s COMMAND ...\n"
                      "\"%s help\" for a list of available commands\n"
                      "\"%s help COMMAND\" for specific details\n",
                      argv[0], argv[0], argv[0]);
      fossil_exit(1);
    }
  }else{
    g.fQuiet = find_option("quiet", 0, 0)!=0;
    g.fSqlTrace = find_option("sqltrace", 0, 0)!=0;
    g.fSqlPrint = find_option("sqlprint", 0, 0)!=0;
    g.fHttpTrace = find_option("httptrace", 0, 0)!=0;
    g.zLogin = find_option("user", "U", 1);
    zCmdName = argv[1];
  }
  rc = name_search(zCmdName, aCommand, count(aCommand), &idx);
  if( rc==1 && mightBeCgi ){
    rc = name_search("cgi", aCommand, count(aCommand), &idx);
  }
  if( rc==1 ){
    fprintf(stderr,"%s: unknown command: %s\n"
                   "%s: use \"help\" for more information\n",
                   argv[0], zCmdName, argv[0]);
    fossil_exit(1);
  }else if( rc==2 ){
    fprintf(stderr,"%s: ambiguous command prefix: %s\n"

  va_end(ap);
  if( g.cgiOutput ){
    cgi_printf("<p class=\"generalError\">%h</p>", z);
  }else{
    fprintf(stderr, "%s: %s\n", g.argv[0], z);
  }
}

/*
** Malloc and free routines that cannot fail
*/
void *fossil_malloc(size_t n){
  void *p = malloc(n);
  if( p==0 ) fossil_panic("out of memory");
  return p;
}
void fossil_free(void *p){
  free(p);
}
void *fossil_realloc(void *p, size_t n){
  p = realloc(p, n);
  if( p==0 ) fossil_panic("out of memory");
  return p;
}

/*
** This function implements a cross-platform "system()" interface.
*/
int fossil_system(const char *zOrigCmd){
  int rc;
#if defined(_WIN32)
  /* On windows, we have to put double-quotes around the entire command.
  ** Who knows why - this is just the way windows works.
  */
  char *zNewCmd = mprintf("\"%s\"", zOrigCmd);
  rc = system(zNewCmd);
  free(zNewCmd);
#else
  /* On unix, evaluate the command directly.
  */
  rc = system(zOrigCmd);
#endif 
  return rc; 
}



/*
** Return a name for an SQLite error code
*/
static const char *sqlite_error_code_name(int iCode){
  static char zCode[30];
  switch( iCode & 0xff ){

    }else{
      putchar(*z);
      z++;
    }
  }
  putchar('\n');
}

/*
** WEBPAGE: help
** URL: /help?cmd=CMD
*/
void help_page(void){
    const char * zCmd = P("cmd");
    
    style_header("Command line help %s%s",zCmd?" - ":"",zCmd?zCmd:"");
    if( zCmd ){
      int rc, idx;
      char *z, *s, *d;

      @ <h1>%s(zCmd)</h1>
      rc = name_search(zCmd, aCommand, count(aCommand), &idx);
      if( rc==1 ){
        @ unknown command: %s(zCmd)
      }else if( rc==2 ){
        @ ambiguous command prefix: %s(zCmd)
      }else{
        z = (char*)aCmdHelp[idx];
        if( z==0 ){
          @ no help available for the %s(aCommand[idx].zName) command
        }else{
          z=s=d=mprintf("%s",z);
	  while( *s ){
	    if( *s=='%' && strncmp(s, "%fossil", 7)==0 ){
	      s++;
	    }else{
	      *d++ = *s++;
	    }
	  }
	  *d = 0;
	  @ <pre>%s(z)</pre>
	  free(z);
	}
      }
      @ <hr/><a href="help">available commands</a> in fossil
      @ version %s(MANIFEST_VERSION" "MANIFEST_DATE) UTC
    }else{
      int i;
      
      @ <h1>Available commands</h1>
      for(i=0; i<count(aCommand); i++){
        if( strncmp(aCommand[i].zName,"test",4)==0 ) continue;
        @ <kbd><a href="help?cmd=%s(aCommand[i].zName)">
        @ %s(aCommand[i].zName)</a></kbd>
      }
      @ <hr/>fossil version %s(MANIFEST_VERSION" "MANIFEST_DATE) UTC
    }
    style_footer();
}

/*
** Set the g.zBaseURL value to the full URL for the toplevel of
** the fossil tree.  Set g.zTop to g.zBaseURL without the
** leading "http://" and the host and port.
*/
void set_base_url(void){

    while( zPathInfo[i] && zPathInfo[i]!='/' ){ i++; }
    zRepo = mprintf("%s%.*s.fossil",g.zRepositoryName,i,zPathInfo);

    /* To avoid mischief, make sure the repository basename contains no
    ** characters other than alphanumerics, "-", and "_".
    */
    for(j=strlen(g.zRepositoryName)+1, k=0; k<i-1; j++, k++){
      if( !fossil_isalnum(zRepo[j]) && zRepo[j]!='-' ) zRepo[j] = '_';
    }
    if( zRepo[0]=='/' && zRepo[1]=='/' ) zRepo++;

    if( file_size(zRepo)<1024 ){
      if( zNotFound ){
        cgi_redirect(zNotFound);
      }else{

    zBrowser = db_get("web-browser", "start");
    zBrowserCmd = mprintf("%s http://127.0.0.1:%%d/", zBrowser);
  }
  db_close();
  win32_http_server(iPort, mxPort, zBrowserCmd, zStopperFile, zNotFound, flags);
#endif
}

/*
** COMMAND: sqlite3
**
** Usage: %fossil sqlite3 ?DATABASE? ?OPTIONS?
**
** Run the standalone sqlite3 command-line shell on DATABASE with OPTIONS.
** If DATABASE is omitted, then the repository that serves the working
** directory is opened.
**
** WARNING:  Careless use of this command can corrupt a Fossil repository
** in ways that are unrecoverable.  Be sure you know what you are doing before
** running any SQL commands that modifies the repository database.
*/
void sqlite3_cmd(void){
  extern int sqlite3_shell(int, char**);
  sqlite3_shell(g.argc-1, g.argv+1);
}

/*
** This routine is called by the patched sqlite3 command-line shell in order
** to load the name and database connection for the open Fossil database.
*/
void fossil_open(sqlite3 **pDb, const char **pzRepoName){
  db_must_be_within_tree();
  *pDb = 0;
  *pzRepoName = g.zRepositoryName;
}

	$(TCLSH) test/tester.tcl $(APPNAME)

VERSION.h:	$(SRCDIR)/../manifest.uuid $(SRCDIR)/../manifest
	awk '{ printf "#define MANIFEST_UUID \"%s\"\n", $$1}'  $(SRCDIR)/../manifest.uuid >VERSION.h
	awk '{ printf "#define MANIFEST_VERSION \"[%.10s]\"\n", $$1}'  $(SRCDIR)/../manifest.uuid >>VERSION.h
	awk '$$1=="D"{printf "#define MANIFEST_DATE \"%s %s\"\n", substr($$2,1,10),substr($$2,12)}'  $(SRCDIR)/../manifest >>VERSION.h

EXTRAOBJ =  $(OBJDIR)/sqlite3.o  $(OBJDIR)/shell.o  $(OBJDIR)/th.o  $(OBJDIR)/th_lang.o

$(APPNAME):	headers $(OBJ) $(EXTRAOBJ)
	$(TCC) -o $(APPNAME) $(OBJ) $(EXTRAOBJ) $(LIB)

# This rule prevents make from using its default rules to try build
# an executable named "manifest" out of the file named "manifest.c"
#
$(SRCDIR)/../manifest:	
	# noop

$(OBJDIR)/zip.o:	zip_.c zip.h  $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/zip.o -c zip_.c

zip.h:	headers
$(OBJDIR)/sqlite3.o:	$(SRCDIR)/sqlite3.c
	$(XTCC) -DSQLITE_OMIT_LOAD_EXTENSION=1 -DSQLITE_THREADSAFE=0 -DSQLITE_DEFAULT_FILE_FORMAT=4 -Dlocaltime=fossil_localtime -DSQLITE_ENABLE_LOCKING_STYLE=0 -c $(SRCDIR)/sqlite3.c -o $(OBJDIR)/sqlite3.o

$(OBJDIR)/shell.o:	$(SRCDIR)/shell.c
	$(XTCC) -Dmain=sqlite3_shell -DSQLITE_OMIT_LOAD_EXTENSION=1 -c $(SRCDIR)/shell.c -o $(OBJDIR)/shell.o

$(OBJDIR)/th.o:	$(SRCDIR)/th.c
	$(XTCC) -I$(SRCDIR) -c $(SRCDIR)/th.c -o $(OBJDIR)/th.o

$(OBJDIR)/th_lang.o:	$(SRCDIR)/th_lang.c
	$(XTCC) -I$(SRCDIR) -c $(SRCDIR)/th_lang.c -o $(OBJDIR)/th_lang.o

*/
#include <stdio.h>
#include <stdlib.h>
#include <ctype.h>
#include <memory.h>
#include <sys/stat.h>
#include <assert.h>
#if defined( __MINGW32__) ||  defined(__DMC__) || defined(_MSC_VER) || defined(__POCC__)
#  ifndef WIN32
#    define WIN32
#  endif
# include <string.h>
#else
# include <unistd.h>
#endif

		$(SRCDIR)/../manifest.uuid >VERSION.h
	awk '{ printf "#define MANIFEST_VERSION \"[%.10s]\"\n", $$1}' \
		$(SRCDIR)/../manifest.uuid >>VERSION.h
	awk '$$1=="D"{printf "#define MANIFEST_DATE \"%s %s\"\n",\
		substr($$2,1,10),substr($$2,12)}' \
		$(SRCDIR)/../manifest >>VERSION.h

EXTRAOBJ = \
  $(OBJDIR)/sqlite3.o \
  $(OBJDIR)/shell.o \
  $(OBJDIR)/th.o \
  $(OBJDIR)/th_lang.o

$(APPNAME):	headers $(OBJ) $(EXTRAOBJ)
	$(TCC) -o $(APPNAME) $(OBJ) $(EXTRAOBJ) $(LIB)

# This rule prevents make from using its default rules to try build
# an executable named "manifest" out of the file named "manifest.c"
#
$(SRCDIR)/../manifest:	
	# noop

set opt {-DSQLITE_OMIT_LOAD_EXTENSION=1}
append opt " -DSQLITE_THREADSAFE=0 -DSQLITE_DEFAULT_FILE_FORMAT=4"
#append opt " -DSQLITE_ENABLE_FTS3=1"
append opt " -Dlocaltime=fossil_localtime"
append opt " -DSQLITE_ENABLE_LOCKING_STYLE=0"
puts "\t\$(XTCC) $opt -c \$(SRCDIR)/sqlite3.c -o \$(OBJDIR)/sqlite3.o\n"

puts "\$(OBJDIR)/shell.o:\t\$(SRCDIR)/shell.c"
set opt {-Dmain=sqlite3_shell}
append opt " -DSQLITE_OMIT_LOAD_EXTENSION=1"
puts "\t\$(XTCC) $opt -c \$(SRCDIR)/shell.c -o \$(OBJDIR)/shell.o\n"

puts "\$(OBJDIR)/th.o:\t\$(SRCDIR)/th.c"
puts "\t\$(XTCC) -I\$(SRCDIR) -c \$(SRCDIR)/th.c -o \$(OBJDIR)/th.o\n"

puts "\$(OBJDIR)/th_lang.o:\t\$(SRCDIR)/th_lang.c"
puts "\t\$(XTCC) -I\$(SRCDIR) -c \$(SRCDIR)/th_lang.c -o \$(OBJDIR)/th_lang.o\n"
exit
}

#include "manifest.h"
#include <assert.h>

#if INTERFACE
/*
** Types of control files
*/
#define CFTYPE_ANY        0
#define CFTYPE_MANIFEST   1
#define CFTYPE_CLUSTER    2
#define CFTYPE_CONTROL    3
#define CFTYPE_WIKI       4
#define CFTYPE_TICKET     5
#define CFTYPE_ATTACHMENT 6
#define CFTYPE_EVENT      7

/*
** A single F-card within a manifest
*/
struct ManifestFile { 
  char *zName;           /* Name of a file */
  char *zUuid;           /* UUID of the file */
  char *zPerm;           /* File permissions */
  char *zPrior;          /* Prior name if the name was changed */
};


/*
** A parsed manifest or cluster.
*/
struct Manifest {
  Blob content;         /* The original content blob */
  int type;             /* Type of artifact.  One of CFTYPE_xxxxx */
  int rid;              /* The blob-id for this manifest */
  char *zBaseline;      /* Baseline manifest.  The B card. */
  Manifest *pBaseline;  /* The actual baseline manifest */
  char *zComment;       /* Decoded comment.  The C card. */
  double rDate;         /* Date and time from D card.  0.0 if no D card. */
  char *zUser;          /* Name of the user from the U card. */
  char *zRepoCksum;     /* MD5 checksum of the baseline content.  R card. */
  char *zWiki;          /* Text of the wiki page.  W card. */
  char *zWikiTitle;     /* Name of the wiki page. L card. */
  double rEventDate;    /* Date of an event.  E card. */
  char *zEventId;       /* UUID for an event.  E card. */
  char *zTicketUuid;    /* UUID for a ticket. K card. */
  char *zAttachName;    /* Filename of an attachment. A card. */
  char *zAttachSrc;     /* UUID of document being attached. A card. */
  char *zAttachTarget;  /* Ticket or wiki that attachment applies to.  A card */
  int nFile;            /* Number of F cards */
  int nFileAlloc;       /* Slots allocated in aFile[] */

  int iFile;            /* Index of current file in iterator */




  ManifestFile *aFile;  /* One entry for each F-card */
  int nParent;          /* Number of parents. */
  int nParentAlloc;     /* Slots allocated in azParent[] */
  char **azParent;      /* UUIDs of parents.  One for each P card argument */
  int nCChild;          /* Number of cluster children */
  int nCChildAlloc;     /* Number of closts allocated in azCChild[] */
  char **azCChild;      /* UUIDs of referenced objects in a cluster. M cards */
  int nTag;             /* Number of T Cards */

  struct { 
    char *zName;           /* Key or field name */
    char *zValue;          /* Value of the field */
  } *aField;            /* One for each J card */
};
#endif

/*
** A cache of parsed manifests.  This reduces the number of
** calls to manifest_parse() when doing a rebuild.
*/
#define MX_MANIFEST_CACHE 6
static struct {
  int nxAge;
  int aAge[MX_MANIFEST_CACHE];
  Manifest *apManifest[MX_MANIFEST_CACHE];
} manifestCache;


/*
** Clear the memory allocated in a manifest object
*/
void manifest_destroy(Manifest *p){
  if( p ){
    blob_reset(&p->content);
    free(p->aFile);
    free(p->azParent);
    free(p->azCChild);
    free(p->aTag);
    free(p->aField);
    if( p->pBaseline ) manifest_destroy(p->pBaseline);
    fossil_free(p);
  }
}

/*
** Add an element to the manifest cache using LRU replacement.
*/
void manifest_cache_insert(Manifest *p){
  while( p ){
    int i;
    Manifest *pBaseline = p->pBaseline;
    p->pBaseline = 0;
    for(i=0; i<MX_MANIFEST_CACHE; i++){
      if( manifestCache.apManifest[i]==0 ) break;
    }
    if( i>=MX_MANIFEST_CACHE ){
      int oldest = 0;
      int oldestAge = manifestCache.aAge[0];
      for(i=1; i<MX_MANIFEST_CACHE; i++){
        if( manifestCache.aAge[i]<oldestAge ){
          oldest = i;
          oldestAge = manifestCache.aAge[i];
        }
      }
      manifest_destroy(manifestCache.apManifest[oldest]);
      i = oldest;
    }
    manifestCache.aAge[i] = ++manifestCache.nxAge;
    manifestCache.apManifest[i] = p;
    p = pBaseline;
  }
}

/*
** Try to extract a line from the manifest cache. Return 1 if found.
** Return 0 if not found.
*/
static Manifest *manifest_cache_find(int rid){
  int i;
  Manifest *p;
  for(i=0; i<MX_MANIFEST_CACHE; i++){
    if( manifestCache.apManifest[i] && manifestCache.apManifest[i]->rid==rid ){
      p = manifestCache.apManifest[i];
      manifestCache.apManifest[i] = 0;
      return p;
    }
  }
  return 0;
}

/*
** Clear the manifest cache.
*/
void manifest_cache_clear(void){
  int i;
  for(i=0; i<MX_MANIFEST_CACHE; i++){
    if( manifestCache.apManifest[i] ){
      manifest_destroy(manifestCache.apManifest[i]);
    }
  }
  memset(&manifestCache, 0, sizeof(manifestCache));
}

#ifdef FOSSIL_DONT_VERIFY_MANIFEST_MD5SUM
# define md5sum_init(X)
# define md5sum_step_text(X,Y)
#endif

/*
** Remove the PGP signature from the artifact, if there is one.
*/
static void remove_pgp_signature(char **pz, int *pn){
  char *z = *pz;
  int n = *pn;
  int i;
  if( memcmp(z, "-----BEGIN PGP SIGNED MESSAGE-----", 34)!=0 ) return;
  for(i=34; i<n && (z[i-1]!='\n' || z[i-2]!='\n'); i++){}
  if( i>=n ) return;
  z += i;
  n -= i;
  *pz = z;
  for(i=n-1; i>=0; i--){
    if( z[i]=='\n' && memcmp(&z[i],"\n-----BEGIN PGP SIGNATURE-", 25)==0 ){
      n = i+1;
      break;
    }
  }
  *pn = n;
  return;
}

/*
** Verify the Z-card checksum on the artifact, if there is such a
** checksum.  Return 0 if there is no Z-card.  Return 1 if the Z-card
** exists and is correct.  Return 2 if the Z-card exists and has the wrong
** value.
**
**   0123456789 123456789 123456789 123456789 
**   Z aea84f4f863865a8d59d0384e4d2a41c
*/
static int verify_z_card(const char *z, int n){
  if( n<35 ) return 0;
  if( z[n-35]!='Z' || z[n-34]!=' ' ) return 0;
  md5sum_init();
  md5sum_step_text(z, n-35);
  if( memcmp(&z[n-33], md5sum_finish(0), 32)==0 ){
    return 1;
  }else{
    return 2;
  }
}

/*
** A structure used for rapid parsing of the Manifest file
*/
typedef struct ManifestText ManifestText;
struct ManifestText {
  char *z;           /* The first character of the next token */
  char *zEnd;        /* One character beyond the end of the manifest */
  int atEol;         /* True if z points to the start of a new line */
};

/*
** Return a pointer to the next token.  The token is zero-terminated.
** Return NULL if there are no more tokens on the current line.
*/
static char *next_token(ManifestText *p, int *pLen){
  char *z;
  char *zStart;
  int c;
  if( p->atEol ) return 0;
  zStart = z = p->z;
  while( (c=(*z))!=' ' && c!='\n' ){ z++; }
  *z = 0;
  p->z = &z[1];
  p->atEol = c=='\n';
  if( pLen ) *pLen = z - zStart;
  return zStart;
}

/*
** Return the card-type for the next card.  Or, return 0 if there are no
** more cards or if we are not at the end of the current card.
*/
static char next_card(ManifestText *p){
  char c;
  if( !p->atEol || p->z>=p->zEnd ) return 0;
  c = p->z[0];
  if( p->z[1]==' ' ){
    p->z += 2;
    p->atEol = 0;
  }else if( p->z[1]=='\n' ){
    p->z += 2;
    p->atEol = 1;
  }else{
    c = 0;
  }
  return c;
}

/*
** Parse a blob into a Manifest object.  The Manifest object
** takes over the input blob and will free it when the
** Manifest object is freed.  Zeros are inserted into the blob
** as string terminators so that blob should not be used again.

** The file consists of zero or more cards, one card per line.
** (Except: the content of the W card can extend of multiple lines.)
** Each card is divided into tokens by a single space character.
** The first token is a single upper-case letter which is the card type.
** The card type determines the other parameters to the card.
** Cards must occur in lexicographical order.
*/
static Manifest *manifest_parse(Blob *pContent, int rid){
  Manifest *p;
  int seenZ = 0;
  int i, lineNo=0;
  ManifestText x;
  char cPrevType = 0;
  char cType;
  char *z;
  int n;
  char *zUuid;
  int sz = 0;

  /* Every control artifact ends with a '\n' character.  Exit early
  ** if that is not the case for this artifact.
  */
  z = blob_buffer(pContent);
  n = blob_size(pContent);
  if( n<=0 || z[n-1]!='\n' ){
    blob_reset(pContent);
    return 0;
  }

  /* Strip off the PGP signature if there is one.  Then verify the
  ** Z-card.
  */
  remove_pgp_signature(&z, &n);
  if( verify_z_card(z, n)==0 ){
    blob_reset(pContent);
    return 0;
  }

  /* Verify that the first few characters of the artifact look like
  ** a control artifact.
  */
  if( n<10 || z[0]<'A' || z[0]>'Z' || z[1]!=' ' ){
    blob_reset(pContent);
    return 0;
  }

  /* Allocate a Manifest object to hold the parsed control artifact.
  */
  p = fossil_malloc( sizeof(*p) );
  memset(p, 0, sizeof(*p));
  memcpy(&p->content, pContent, sizeof(p->content));
  p->rid = rid;
  blob_zero(pContent);
  pContent = &p->content;

  /* Begin parsing, card by card.

  */
  x.z = z;
  x.zEnd = &z[n];

  x.atEol = 1;
  while( (cType = next_card(&x))!=0 && cType>=cPrevType ){
    lineNo++;


















    switch( cType ){
      /*
      **     A <filename> <target> ?<source>?
      **
      ** Identifies an attachment to either a wiki page or a ticket.
      ** <source> is the artifact that is the attachment.  <source>
      ** is omitted to delete an attachment.  <target> is the name of
      ** a wiki page or ticket to which that attachment is connected.
      */
      case 'A': {
        char *zName, *zTarget, *zSrc;
        int nTarget = 0, nSrc = 0;
        zName = next_token(&x, 0);
        zTarget = next_token(&x, &nTarget);
        zSrc = next_token(&x, &nSrc);
        if( zName==0 || zTarget==0 ) goto manifest_syntax_error;      
        if( p->zAttachName!=0 ) goto manifest_syntax_error;




        defossilize(zName);
        if( !file_is_simple_pathname(zName) ){
          goto manifest_syntax_error;
        }
        defossilize(zTarget);
        if( (nTarget!=UUID_SIZE || !validate16(zTarget, UUID_SIZE))
           && !wiki_name_is_wellformed((const unsigned char *)zTarget) ){
          goto manifest_syntax_error;
        }

        if( zSrc && (nSrc!=UUID_SIZE || !validate16(zSrc, UUID_SIZE)) ){
          goto manifest_syntax_error;
        }
        p->zAttachName = (char*)file_tail(zName);
        p->zAttachSrc = zSrc;
        p->zAttachTarget = zTarget;
        break;
      }

      /*
      **    B <uuid>
      **
      ** A B-line gives the UUID for the baselinen of a delta-manifest.
      */
      case 'B': {
        if( p->zBaseline ) goto manifest_syntax_error;
        p->zBaseline = next_token(&x, &sz);
        if( p->zBaseline==0 ) goto manifest_syntax_error;
        if( sz!=UUID_SIZE ) goto manifest_syntax_error;
        if( !validate16(p->zBaseline, UUID_SIZE) ) goto manifest_syntax_error;
        break;
      }


      /*
      **     C <comment>
      **
      ** Comment text is fossil-encoded.  There may be no more than
      ** one C line.  C lines are required for manifests and are
      ** disallowed on all other control files.
      */
      case 'C': {

        if( p->zComment!=0 ) goto manifest_syntax_error;
        p->zComment = next_token(&x, 0);
        if( p->zComment==0 ) goto manifest_syntax_error;

        defossilize(p->zComment);
        break;
      }

      /*
      **     D <timestamp>
      **
      ** The timestamp should be ISO 8601.   YYYY-MM-DDtHH:MM:SS
      ** There can be no more than 1 D line.  D lines are required
      ** for all control files except for clusters.
      */
      case 'D': {


        if( p->rDate>0.0 ) goto manifest_syntax_error;



        p->rDate = db_double(0.0, "SELECT julianday(%Q)", next_token(&x,0));
        if( p->rDate<=0.0 ) goto manifest_syntax_error;
        break;
      }

      /*
      **     E <timestamp> <uuid>
      **
      ** An "event" card that contains the timestamp of the event in the 
      ** format YYYY-MM-DDtHH:MM:SS and a unique identifier for the event.
      ** The event timestamp is distinct from the D timestamp.  The D
      ** timestamp is when the artifact was created whereas the E timestamp
      ** is when the specific event is said to occur.
      */
      case 'E': {


        if( p->rEventDate>0.0 ) goto manifest_syntax_error;




        p->rEventDate = db_double(0.0,"SELECT julianday(%Q)", next_token(&x,0));
        if( p->rEventDate<=0.0 ) goto manifest_syntax_error;
        p->zEventId = next_token(&x, &sz);
        if( sz!=UUID_SIZE ) goto manifest_syntax_error;

        if( !validate16(p->zEventId, UUID_SIZE) ) goto manifest_syntax_error;
        break;
      }

      /*
      **     F <filename> ?<uuid>? ?<permissions>? ?<old-name>?
      **
      ** Identifies a file in a manifest.  Multiple F lines are
      ** allowed in a manifest.  F lines are not allowed in any
      ** other control file.  The filename and old-name are fossil-encoded.
      */
      case 'F': {
        char *zName, *zPerm, *zPriorName;





        zName = next_token(&x,0);

        if( zName==0 ) goto manifest_syntax_error;

        defossilize(zName);
        if( !file_is_simple_pathname(zName) ){
          goto manifest_syntax_error;
        }
        zUuid = next_token(&x, &sz);
        if( p->zBaseline==0 || zUuid!=0 ){
          if( sz!=UUID_SIZE ) goto manifest_syntax_error;
          if( !validate16(zUuid, UUID_SIZE) ) goto manifest_syntax_error;
        }
        zPerm = next_token(&x,0);
        zPriorName = next_token(&x,0);
        if( zPriorName ){
          defossilize(zPriorName);
          if( !file_is_simple_pathname(zPriorName) ){
            goto manifest_syntax_error;
          }


        }
        if( p->nFile>=p->nFileAlloc ){
          p->nFileAlloc = p->nFileAlloc*2 + 10;
          p->aFile = fossil_realloc(p->aFile, 
                                    p->nFileAlloc*sizeof(p->aFile[0]) );

        }
        i = p->nFile++;
        p->aFile[i].zName = zName;
        p->aFile[i].zUuid = zUuid;
        p->aFile[i].zPerm = zPerm;
        p->aFile[i].zPrior = zPriorName;

        if( i>0 && strcmp(p->aFile[i-1].zName, zName)>=0 ){
          goto manifest_syntax_error;
        }
        break;
      }

      /*
      **     J <name> ?<value>?
      **
      ** Specifies a name value pair for ticket.  If the first character
      ** of <name> is "+" then the <value> is appended to any preexisting
      ** value.  If <value> is omitted then it is understood to be an
      ** empty string.
      */
      case 'J': {
        char *zName, *zValue;

        zName = next_token(&x,0);
        zValue = next_token(&x,0);
        if( zName==0 ) goto manifest_syntax_error;

        if( zValue==0 ) zValue = "";
        defossilize(zValue);
        if( p->nField>=p->nFieldAlloc ){
          p->nFieldAlloc = p->nFieldAlloc*2 + 10;
          p->aField = fossil_realloc(p->aField,
                               p->nFieldAlloc*sizeof(p->aField[0]) );

        }
        i = p->nField++;
        p->aField[i].zName = zName;
        p->aField[i].zValue = zValue;
        if( i>0 && strcmp(p->aField[i-1].zName, zName)>=0 ){
          goto manifest_syntax_error;
        }
        break;
      }


      /*
      **    K <uuid>
      **
      ** A K-line gives the UUID for the ticket which this control file
      ** is amending.
      */
      case 'K': {


        if( p->zTicketUuid!=0 ) goto manifest_syntax_error;
        p->zTicketUuid = next_token(&x, &sz);
        if( sz!=UUID_SIZE ) goto manifest_syntax_error;
        if( !validate16(p->zTicketUuid, UUID_SIZE) ) goto manifest_syntax_error;


        break;
      }

      /*
      **     L <wikititle>
      **
      ** The wiki page title is fossil-encoded.  There may be no more than
      ** one L line.
      */
      case 'L': {

        if( p->zWikiTitle!=0 ) goto manifest_syntax_error;
        p->zWikiTitle = next_token(&x,0);
        if( p->zWikiTitle==0 ) goto manifest_syntax_error;

        defossilize(p->zWikiTitle);
        if( !wiki_name_is_wellformed((const unsigned char *)p->zWikiTitle) ){
          goto manifest_syntax_error;
        }
        break;
      }

      /*
      **    M <uuid>
      **
      ** An M-line identifies another artifact by its UUID.  M-lines
      ** occur in clusters only.
      */
      case 'M': {
        zUuid = next_token(&x, &sz);

        if( zUuid==0 ) goto manifest_syntax_error;

        if( sz!=UUID_SIZE ) goto manifest_syntax_error;
        if( !validate16(zUuid, UUID_SIZE) ) goto manifest_syntax_error;
        if( p->nCChild>=p->nCChildAlloc ){
          p->nCChildAlloc = p->nCChildAlloc*2 + 10;
          p->azCChild = fossil_realloc(p->azCChild
                                 , p->nCChildAlloc*sizeof(p->azCChild[0]) );

        }
        i = p->nCChild++;
        p->azCChild[i] = zUuid;
        if( i>0 && strcmp(p->azCChild[i-1], zUuid)>=0 ){
          goto manifest_syntax_error;
        }
        break;
      }

      /*
      **     P <uuid> ...
      **
      ** Specify one or more other artifacts where are the parents of
      ** this artifact.  The first parent is the primary parent.  All
      ** others are parents by merge.
      */
      case 'P': {

        while( (zUuid = next_token(&x, &sz))!=0 ){

          if( sz!=UUID_SIZE ) goto manifest_syntax_error;

          if( !validate16(zUuid, UUID_SIZE) ) goto manifest_syntax_error;
          if( p->nParent>=p->nParentAlloc ){
            p->nParentAlloc = p->nParentAlloc*2 + 5;
            p->azParent = fossil_realloc(p->azParent,
                               p->nParentAlloc*sizeof(char*));

          }
          i = p->nParent++;
          p->azParent[i] = zUuid;
        }
        break;
      }

      /*
      **     R <md5sum>
      **
      ** Specify the MD5 checksum over the name and content of all files
      ** in the manifest.
      */
      case 'R': {

        if( p->zRepoCksum!=0 ) goto manifest_syntax_error;
        p->zRepoCksum = next_token(&x, &sz);

        if( sz!=32 ) goto manifest_syntax_error;

        if( !validate16(p->zRepoCksum, 32) ) goto manifest_syntax_error;
        break;
      }

      /*
      **    T (+|*|-)<tagname> <uuid> ?<value>?
      **
      ** Create or cancel a tag or property.  The tagname is fossil-encoded.
      ** The first character of the name must be either "+" to create a
      ** singleton tag, "*" to create a propagating tag, or "-" to create
      ** anti-tag that undoes a prior "+" or blocks propagation of of
      ** a "*".
      **
      ** The tag is applied to <uuid>.  If <uuid> is "*" then the tag is
      ** applied to the current manifest.  If <value> is provided then 
      ** the tag is really a property with the given value.
      **
      ** Tags are not allowed in clusters.  Multiple T lines are allowed.
      */
      case 'T': {
        char *zName, *zValue;

        zName = next_token(&x, 0);
        if( zName==0 ) goto manifest_syntax_error;

        zUuid = next_token(&x, &sz);
        if( zUuid==0 ) goto manifest_syntax_error;




        zValue = next_token(&x, 0);


        if( zValue ) defossilize(zValue);

        if( sz==UUID_SIZE && validate16(zUuid, UUID_SIZE) ){
          /* A valid uuid */
        }else if( sz==1 && zUuid[0]=='*' ){
          zUuid = 0;
        }else{
          goto manifest_syntax_error;
        }
        defossilize(zName);
        if( zName[0]!='-' && zName[0]!='+' && zName[0]!='*' ){
          goto manifest_syntax_error;
        }
        if( validate16(&zName[1], strlen(&zName[1])) ){
          /* Do not allow tags whose names look like UUIDs */
          goto manifest_syntax_error;
        }
        if( p->nTag>=p->nTagAlloc ){
          p->nTagAlloc = p->nTagAlloc*2 + 10;
          p->aTag = fossil_realloc(p->aTag, p->nTagAlloc*sizeof(p->aTag[0]) );

        }
        i = p->nTag++;
        p->aTag[i].zName = zName;
        p->aTag[i].zUuid = zUuid;
        p->aTag[i].zValue = zValue;
        if( i>0 && strcmp(p->aTag[i-1].zName, zName)>=0 ){
          goto manifest_syntax_error;
        }
        break;
      }

      /*
      **     U ?<login>?
      **
      ** Identify the user who created this control file by their
      ** login.  Only one U line is allowed.  Prohibited in clusters.
      ** If the user name is omitted, take that to be "anonymous".
      */
      case 'U': {

        if( p->zUser!=0 ) goto manifest_syntax_error;
        p->zUser = next_token(&x, 0);
        if( p->zUser==0 ){
          p->zUser = "anonymous";
        }else{

          defossilize(p->zUser);
        }

        break;
      }

      /*
      **     W <size>
      **
      ** The next <size> bytes of the file contain the text of the wiki
      ** page.  There is always an extra \n before the start of the next
      ** record.
      */
      case 'W': {
        char *zSize;
        int size, c;
        Blob wiki;

        zSize = next_token(&x, 0);
        if( zSize==0 ) goto manifest_syntax_error;
        if( x.atEol==0 ) goto manifest_syntax_error;
        for(size=0; (c = zSize[0])>='0' && c<='9'; zSize++){
           size = size*10 + c - '0';
        }
        if( size<0 ) goto manifest_syntax_error;
        if( p->zWiki!=0 ) goto manifest_syntax_error;
        blob_zero(&wiki);

        if( (&x.z[size+1])>=x.zEnd ) goto manifest_syntax_error;

        p->zWiki = x.z;
        x.z += size;
        if( x.z[0]!='\n' ) goto manifest_syntax_error;
        x.z[0] = 0;
        x.z++;
        break;
      }


      /*
      **     Z <md5sum>
      **
      ** MD5 checksum on this control file.  The checksum is over all
      ** lines (other than PGP-signature lines) prior to the current
      ** line.  This must be the last record.
      **
      ** This card is required for all control file types except for
      ** Manifest.  It is not required for manifest only for historical
      ** compatibility reasons.
      */
      case 'Z': {


        zUuid = next_token(&x, &sz);

        if( sz!=32 ) goto manifest_syntax_error;
        if( !validate16(zUuid, 32) ) goto manifest_syntax_error;




        seenZ = 1;
        break;
      }
      default: {
        goto manifest_syntax_error;
      }
    }
  }
  if( x.z<x.zEnd ) goto manifest_syntax_error;

  if( p->nFile>0 || p->zRepoCksum!=0 || p->zBaseline ){
    if( p->nCChild>0 ) goto manifest_syntax_error;
    if( p->rDate<=0.0 ) goto manifest_syntax_error;
    if( p->nField>0 ) goto manifest_syntax_error;
    if( p->zTicketUuid ) goto manifest_syntax_error;
    if( p->zWiki ) goto manifest_syntax_error;
    if( p->zWikiTitle ) goto manifest_syntax_error;
    if( p->zEventId ) goto manifest_syntax_error;

    if( p->nField>0 ) goto manifest_syntax_error;
    if( p->zTicketUuid ) goto manifest_syntax_error;
    if( p->zWikiTitle ) goto manifest_syntax_error;
    if( p->zTicketUuid ) goto manifest_syntax_error;
    p->type = CFTYPE_MANIFEST;
  }
  md5sum_init();
  return p;

manifest_syntax_error:
  /*fprintf(stderr, "Manifest error on line %i\n", lineNo);fflush(stderr);*/
  md5sum_init();
  manifest_destroy(p);
  return 0;
}

/*
** Get a manifest given the rid for the control artifact.  Return
** a pointer to the manifest on success or NULL if there is a failure.
*/
Manifest *manifest_get(int rid, int cfType){
  Blob content;
  Manifest *p;
  p = manifest_cache_find(rid);
  if( p ){
    if( cfType!=CFTYPE_ANY && cfType!=p->type ){
      manifest_cache_insert(p);
      p = 0;
    }
    return p;
  }
  content_get(rid, &content);
  p = manifest_parse(&content, rid);
  if( p && cfType!=CFTYPE_ANY && cfType!=p->type ){
    manifest_destroy(p);
    p = 0;
  }
  return p;
}

/*
** Given a checkin name, load and parse the manifest for that checkin.
** Throw a fatal error if anything goes wrong.
*/
Manifest *manifest_get_by_name(const char *zName, int *pRid){
  int rid;
  Manifest *p;

  rid = name_to_rid(zName);
  if( !is_a_version(rid) ){
    fossil_fatal("no such checkin: %s", zName);
  }
  if( pRid ) *pRid = rid;
  p = manifest_get(rid, CFTYPE_MANIFEST);
  if( p==0 ){
    fossil_fatal("cannot parse manifest for checkin: %s", zName);
  }
  return p;
}

/*
** COMMAND: test-parse-manifest
**
** Usage: %fossil test-parse-manifest FILENAME ?N?
**
** Parse the manifest and discarded.  Use for testing only.
*/
void manifest_test_parse_cmd(void){
  Manifest *p;
  Blob b;
  int i;
  int n = 1;
  sqlite3_open(":memory:", &g.db);
  if( g.argc!=3 && g.argc!=4 ){
    usage("FILENAME");
  }

  blob_read_from_file(&b, g.argv[2]);
  if( g.argc>3 ) n = atoi(g.argv[3]);
  for(i=0; i<n; i++){
    Blob b2;
    blob_copy(&b2, &b);
    p = manifest_parse(&b2, 0);
    manifest_destroy(p);
  }
}

/*
** Fetch the baseline associated with the delta-manifest p.
** Return 0 on success.  If unable to parse the baseline,
** throw an error.  If the baseline is a manifest, throw an
** error if throwError is true, or record that p is an orphan
** and return 1 throwError is false.
*/
static int fetch_baseline(Manifest *p, int throwError){
  if( p->zBaseline!=0 && p->pBaseline==0 ){
    int rid = uuid_to_rid(p->zBaseline, 0);
    if( rid==0 && !throwError ){
      rid = content_new(p->zBaseline);
      db_multi_exec(
         "INSERT OR IGNORE INTO orphan(rid, baseline) VALUES(%d,%d)",
         rid, p->rid
      );
      return 1;
    }
    p->pBaseline = manifest_get(rid, CFTYPE_MANIFEST);
    if( p->pBaseline==0 ){
      if( !throwError && db_exists("SELECT 1 FROM phantom WHERE rid=%d",rid) ){
        db_multi_exec(
           "INSERT OR IGNORE INTO orphan(rid, baseline) VALUES(%d,%d)",
           rid, p->rid
        );
        return 1;
      }    
      fossil_fatal("cannot access baseline manifest %S", p->zBaseline);
    }
  }
  return 0;
}

/*
** Rewind a manifest-file iterator back to the beginning of the manifest.
*/
void manifest_file_rewind(Manifest *p){
  p->iFile = 0;
  fetch_baseline(p, 1);
  if( p->pBaseline ){
    p->pBaseline->iFile = 0;
  }
}

/*
** Advance to the next manifest-file.
**
** Return NULL for end-of-records or if there is an error.  If an error
** occurs and pErr!=0 then store 1 in *pErr.
*/
ManifestFile *manifest_file_next(
  Manifest *p,   
  int *pErr
){
  ManifestFile *pOut = 0;
  if( pErr ) *pErr = 0;
  if( p->pBaseline==0 ){
    /* Manifest p is a baseline-manifest.  Just scan down the list
    ** of files. */
    if( p->iFile<p->nFile ) pOut = &p->aFile[p->iFile++];
  }else{
    /* Manifest p is a delta-manifest.  Scan the baseline but amend the
    ** file list in the baseline with changes described by p.
    */
    Manifest *pB = p->pBaseline;
    int cmp;
    while(1){
      if( pB->iFile>=pB->nFile ){
        /* We have used all entries out of the baseline.  Return the next
        ** entry from the delta. */
        if( p->iFile<p->nFile ) pOut = &p->aFile[p->iFile++];
        break;
      }else if( p->iFile>=p->nFile ){
        /* We have used all entries from the delta.  Return the next
        ** entry from the baseline. */
        if( pB->iFile<pB->nFile ) pOut = &pB->aFile[pB->iFile++];
        break;
      }else if( (cmp = strcmp(pB->aFile[pB->iFile].zName,
                              p->aFile[p->iFile].zName)) < 0 ){
        /* The next baseline entry comes before the next delta entry.
        ** So return the baseline entry. */
        pOut = &pB->aFile[pB->iFile++];
        break;
      }else if( cmp>0 ){
        /* The next delta entry comes before the next baseline
        ** entry so return the delta entry */
        pOut = &p->aFile[p->iFile++];
        break;
      }else if( p->aFile[p->iFile].zUuid ){
        /* The next delta entry is a replacement for the next baseline
        ** entry.  Skip the baseline entry and return the delta entry */
        pB->iFile++;
        pOut = &p->aFile[p->iFile++];
        break;
      }else{
        /* The next delta entry is a delete of the next baseline
        ** entry.  Skip them both.  Repeat the loop to find the next
        ** non-delete entry. */
        pB->iFile++;
        p->iFile++;
        continue;
      }
    }
  }
  return pOut;
}

/*
** Translate a filename into a filename-id (fnid).  Create a new fnid
** if no previously exists.
*/
static int filename_to_fnid(const char *zFilename){

/*
** Add a single entry to the mlink table.  Also add the filename to
** the filename table if it is not there already.
*/
static void add_one_mlink(
  int mid,                  /* The record ID of the manifest */
  const char *zFromUuid,    /* UUID for the mlink.pid. "" to add file */
  const char *zToUuid,      /* UUID for the mlink.fid. "" to delele */
  const char *zFilename,    /* Filename */
  const char *zPrior        /* Previous filename. NULL if unchanged */
){
  int fnid, pfnid, pid, fid;
  static Stmt s1;

  fnid = filename_to_fnid(zFilename);
  if( zPrior==0 ){
    pfnid = 0;
  }else{
    pfnid = filename_to_fnid(zPrior);
  }
  if( zFromUuid==0 || zFromUuid[0]==0 ){
    pid = 0;
  }else{
    pid = uuid_to_rid(zFromUuid, 1);
  }
  if( zToUuid==0 || zToUuid[0]==0 ){
    fid = 0;
  }else{
    fid = uuid_to_rid(zToUuid, 1);
  }
  db_static_prepare(&s1,
    "INSERT INTO mlink(mid,pid,fid,fnid,pfnid)"
    "VALUES(:m,:p,:f,:n,:pfn)"
  );
  db_bind_int(&s1, ":m", mid);
  db_bind_int(&s1, ":p", pid);
  db_bind_int(&s1, ":f", fid);
  db_bind_int(&s1, ":n", fnid);
  db_bind_int(&s1, ":pfn", pfnid);
  db_exec(&s1);
  if( pid && fid ){
    content_deltify(pid, fid, 0);
  }
}

/*
** Do a binary search to find a file in the p->aFile[] array.  
**
** As an optimization, guess that the file we seek is at index p->iFile.
** That will usually be the case.  If it is not found there, then do the
** actual binary search.
**
** Update p->iFile to be the index of the file that is found.
*/
static ManifestFile *manifest_file_seek_base(Manifest *p, const char *zName){
  int lwr, upr;
  int c;
  int i;
  lwr = 0;
  upr = p->nFile - 1;
  if( p->iFile>=lwr && p->iFile<upr ){
    c = strcmp(p->aFile[p->iFile+1].zName, zName);
    if( c==0 ){
      return &p->aFile[++p->iFile];
    }else if( c>0 ){
      upr = p->iFile;
    }else{
      lwr = p->iFile+1;
    }
  }
  while( lwr<=upr ){
    i = (lwr+upr)/2;
    c = strcmp(p->aFile[i].zName, zName);
    if( c<0 ){
      lwr = i+1;
    }else if( c>0 ){
      upr = i-1;
    }else{
      p->iFile = i;
      return &p->aFile[i];
    }
  }
  return 0;
}

/*
** Locate a file named zName in the aFile[] array of the given manifest.
** Return a pointer to the appropriate ManifestFile object.  Return NULL
** if not found.
**
** This routine works even if p is a delta-manifest.  The pointer 
** returned might be to the baseline.
**
** We assume that filenames are in sorted order and use a binary search.
*/
ManifestFile *manifest_file_seek(Manifest *p, const char *zName){
  ManifestFile *pFile;
  
  pFile = manifest_file_seek_base(p, zName);
  if( pFile && pFile->zUuid==0 ) return 0;
  if( pFile==0 && p->zBaseline ){
    fetch_baseline(p, 1);
    pFile = manifest_file_seek_base(p->pBaseline, zName);
  }
  return pFile;
}

/*
** This strcmp() function handles NULL arguments.  NULLs sort first.
*/
static int strcmp_null(const char *zOne, const char *zTwo){
  if( zOne==0 ){
    if( zTwo==0 ) return 0;
    return -1;
  }else if( zTwo==0 ){
    return +1;
  }else{
    return strcmp(zOne, zTwo);
  }
}

/*
** Add mlink table entries associated with manifest cid.  The
** parent manifest is pid.
**
** A single mlink entry is added for every file that changed content
** and/or name going from pid to cid.
**
** Deleted files have mlink.fid=0.
** Added files have mlink.pid=0.
** Edited files have both mlink.pid!=0 and mlink.fid!=0
*/
static void add_mlink(int pid, Manifest *pParent, int cid, Manifest *pChild){

  Blob otherContent;
  int otherRid;
  int i, rc;
  ManifestFile *pChildFile, *pParentFile;
  Manifest **ppOther;
  static Stmt eq;

  db_static_prepare(&eq, "SELECT 1 FROM mlink WHERE mid=:mid");
  db_bind_int(&eq, ":mid", cid);
  rc = db_step(&eq);
  db_reset(&eq);
  if( rc==SQLITE_ROW ) return;

  assert( pParent==0 || pChild==0 );
  if( pParent==0 ){
    ppOther = &pParent;
    otherRid = pid;
  }else{
    ppOther = &pChild;
    otherRid = cid;
  }
  if( (*ppOther = manifest_cache_find(otherRid))==0 ){
    content_get(otherRid, &otherContent);
    if( blob_size(&otherContent)==0 ) return;
    *ppOther = manifest_parse(&otherContent, otherRid);

    if( *ppOther==0 ) return;
  }


  if( fetch_baseline(pParent, 0) || fetch_baseline(pChild, 0) ){


    manifest_destroy(*ppOther);


    return;
  }
  if( (pParent->zBaseline==0)==(pChild->zBaseline==0) ){
    content_deltify(pid, cid, 0); 
  }else if( pChild->zBaseline==0 && pParent->zBaseline!=0 ){
    content_deltify(pParent->pBaseline->rid, cid, 0);
  }
  
  for(i=0, pChildFile=pChild->aFile; i<pChild->nFile; i++, pChildFile++){

    if( pChildFile->zPrior ){

       pParentFile = manifest_file_seek(pParent, pChildFile->zPrior);






       if( pParentFile ){
         add_one_mlink(cid, pParentFile->zUuid, pChildFile->zUuid,
                       pChildFile->zName, pChildFile->zPrior);
       }
    }else{
       pParentFile = manifest_file_seek(pParent, pChildFile->zName);
       if( pParentFile==0 ){
         if( pChildFile->zUuid ){
           add_one_mlink(cid, 0, pChildFile->zUuid, pChildFile->zName, 0);
         }


       }else if( strcmp_null(pChildFile->zUuid, pParentFile->zUuid)!=0 ){
         add_one_mlink(cid, pParentFile->zUuid, pChildFile->zUuid,
                       pChildFile->zName, 0);
       }


    }
  }
  if( pParent->zBaseline && pChild->zBaseline ){
    for(i=0, pParentFile=pParent->aFile; i<pParent->nFile; i++, pParentFile++){
      if( pParentFile->zUuid ) continue;
      pChildFile = manifest_file_seek(pChild, pParentFile->zName);
      if( pChildFile ){
        add_one_mlink(cid, 0, pChildFile->zUuid, pChildFile->zName, 0);
      }

    }







  }


  manifest_cache_insert(*ppOther);
}

/*
** True if manifest_crosslink_begin() has been called but
** manifest_crosslink_end() is still pending.
*/
static int manifest_crosslink_busy = 0;

** Historical note:  This routine original processed manifests only.
** Processing for other control artifacts was added later.  The name
** of the routine, "manifest_crosslink", and the name of this source
** file, is a legacy of its original use.
*/
int manifest_crosslink(int rid, Blob *pContent){
  int i;
  Manifest *p;
  Stmt q;
  int parentid = 0;

  if( (p = manifest_cache_find(rid))!=0 ){
    blob_reset(pContent);
  }else if( (p = manifest_parse(pContent, rid))==0 ){
    return 0;
  }
  if( g.xlinkClusterOnly && p->type!=CFTYPE_CLUSTER ){
    manifest_destroy(p);
    return 0;
  }
  if( p->type==CFTYPE_MANIFEST && fetch_baseline(p, 0) ){
    manifest_destroy(p);
    return 0;
  }
  db_begin_transaction();
  if( p->type==CFTYPE_MANIFEST ){
    if( !db_exists("SELECT 1 FROM mlink WHERE mid=%d", rid) ){
      char *zCom;
      for(i=0; i<p->nParent; i++){
        int pid = uuid_to_rid(p->azParent[i], 1);
        db_multi_exec("INSERT OR IGNORE INTO plink(pid, cid, isprim, mtime)"
                      "VALUES(%d, %d, %d, %.17g)", pid, rid, i==0, p->rDate);
        if( i==0 ){
          add_mlink(pid, 0, rid, p);
          parentid = pid;
        }
      }
      db_prepare(&q, "SELECT cid FROM plink WHERE pid=%d AND isprim", rid);
      while( db_step(&q)==SQLITE_ROW ){
        int cid = db_column_int(&q, 0);
        add_mlink(rid, p, cid, 0);
      }
      db_finalize(&q);
      db_multi_exec(
        "REPLACE INTO event(type,mtime,objid,user,comment,"
                           "bgcolor,euser,ecomment)"
        "VALUES('ci',"
        "  coalesce("
        "    (SELECT julianday(value) FROM tagxref WHERE tagid=%d AND rid=%d),"
        "    %.17g"
        "  ),"
        "  %d,%Q,%Q,"
        "  (SELECT value FROM tagxref WHERE tagid=%d AND rid=%d AND tagtype>0),"
        "  (SELECT value FROM tagxref WHERE tagid=%d AND rid=%d),"
        "  (SELECT value FROM tagxref WHERE tagid=%d AND rid=%d));",
        TAG_DATE, rid, p->rDate,
        rid, p->zUser, p->zComment, 
        TAG_BGCOLOR, rid,
        TAG_USER, rid,
        TAG_COMMENT, rid
      );
      zCom = db_text(0, "SELECT coalesce(ecomment, comment) FROM event"
                        " WHERE rowid=last_insert_rowid()");
      wiki_extract_links(zCom, rid, 0, p->rDate, 1, WIKI_INLINE);
      free(zCom);

      /* If this is a delta-manifest, record the fact that this repository
      ** contains delta manifests, to free the "commit" logic to generate
      ** new delta manifests.
      */
      if( p->zBaseline!=0 ){
        static int once = 0;
        if( !once ){
          db_set_int("seen-delta-manifest", 1, 0);
          once = 0;
        }
      }
    }
  }
  if( p->type==CFTYPE_CLUSTER ){
    static Stmt del1;
    tag_insert("cluster", 1, 0, rid, p->rDate, rid);
    db_static_prepare(&del1, "DELETE FROM unclustered WHERE rid=:rid");
    for(i=0; i<p->nCChild; i++){
      int mid;
      mid = uuid_to_rid(p->azCChild[i], 1);
      if( mid>0 ){
        db_bind_int(&del1, ":rid", mid);
        db_step(&del1);
        db_reset(&del1);
      }
    }
  }
  if( p->type==CFTYPE_CONTROL
   || p->type==CFTYPE_MANIFEST
   || p->type==CFTYPE_EVENT
  ){
    for(i=0; i<p->nTag; i++){
      int tid;
      int type;
      if( p->aTag[i].zUuid ){
        tid = uuid_to_rid(p->aTag[i].zUuid, 1);
      }else{
        tid = rid;
      }
      if( tid ){
        switch( p->aTag[i].zName[0] ){
          case '-':  type = 0;  break;  /* Cancel prior occurances */
          case '+':  type = 1;  break;  /* Apply to target only */
          case '*':  type = 2;  break;  /* Propagate to descendants */
          default:
            fossil_fatal("unknown tag type in manifest: %s", p->aTag);
            return 0;
        }
        tag_insert(&p->aTag[i].zName[1], type, p->aTag[i].zValue, 
                   rid, p->rDate, tid);
      }
    }
    if( parentid ){
      tag_propagate_all(parentid);
    }
  }
  if( p->type==CFTYPE_WIKI ){
    char *zTag = mprintf("wiki-%s", p->zWikiTitle);
    int tagid = tag_findid(zTag, 1);
    int prior;
    char *zComment;
    int nWiki;
    char zLength[40];
    while( fossil_isspace(p->zWiki[0]) ) p->zWiki++;
    nWiki = strlen(p->zWiki);
    sqlite3_snprintf(sizeof(zLength), zLength, "%d", nWiki);
    tag_insert(zTag, 1, zLength, rid, p->rDate, rid);
    free(zTag);
    prior = db_int(0,
      "SELECT rid FROM tagxref"
      " WHERE tagid=%d AND mtime<%.17g"
      " ORDER BY mtime DESC",
      tagid, p->rDate
    );
    if( prior ){
      content_deltify(prior, rid, 0);
    }
    if( nWiki>0 ){
      zComment = mprintf("Changes to wiki page [%h]", p->zWikiTitle);
    }else{
      zComment = mprintf("Deleted wiki page [%h]", p->zWikiTitle);
    }
    db_multi_exec(
      "REPLACE INTO event(type,mtime,objid,user,comment,"
      "                  bgcolor,euser,ecomment)"
      "VALUES('w',%.17g,%d,%Q,%Q,"
      "  (SELECT value FROM tagxref WHERE tagid=%d AND rid=%d AND tagtype>1),"
      "  (SELECT value FROM tagxref WHERE tagid=%d AND rid=%d),"
      "  (SELECT value FROM tagxref WHERE tagid=%d AND rid=%d));",
      p->rDate, rid, p->zUser, zComment, 
      TAG_BGCOLOR, rid,
      TAG_BGCOLOR, rid,
      TAG_USER, rid,
      TAG_COMMENT, rid
    );
    free(zComment);
  }
  if( p->type==CFTYPE_EVENT ){
    char *zTag = mprintf("event-%s", p->zEventId);
    int tagid = tag_findid(zTag, 1);
    int prior, subsequent;
    int nWiki;
    char zLength[40];
    while( fossil_isspace(p->zWiki[0]) ) p->zWiki++;
    nWiki = strlen(p->zWiki);
    sqlite3_snprintf(sizeof(zLength), zLength, "%d", nWiki);
    tag_insert(zTag, 1, zLength, rid, p->rDate, rid);
    free(zTag);
    prior = db_int(0,
      "SELECT rid FROM tagxref"
      " WHERE tagid=%d AND mtime<%.17g"
      " ORDER BY mtime DESC",
      tagid, p->rDate
    );
    if( prior ){
      content_deltify(prior, rid, 0);
      db_multi_exec(
        "DELETE FROM event"
        " WHERE type='e'"
        "   AND tagid=%d"
        "   AND objid IN (SELECT rid FROM tagxref WHERE tagid=%d)",
        tagid, tagid
      );
    }
    subsequent = db_int(0,
      "SELECT rid FROM tagxref"
      " WHERE tagid=%d AND mtime>%.17g"
      " ORDER BY mtime",
      tagid, p->rDate
    );
    if( subsequent ){
      content_deltify(rid, subsequent, 0);
    }else{
      db_multi_exec(
        "REPLACE INTO event(type,mtime,objid,tagid,user,comment,bgcolor)"
        "VALUES('e',%.17g,%d,%d,%Q,%Q,"
        "  (SELECT value FROM tagxref WHERE tagid=%d AND rid=%d));",
        p->rEventDate, rid, tagid, p->zUser, p->zComment, 
        TAG_BGCOLOR, rid
      );
    }
  }
  if( p->type==CFTYPE_TICKET ){
    char *zTag;

    assert( manifest_crosslink_busy==1 );
    zTag = mprintf("tkt-%s", p->zTicketUuid);
    tag_insert(zTag, 1, 0, rid, p->rDate, rid);
    free(zTag);
    db_multi_exec("INSERT OR IGNORE INTO pending_tkt VALUES(%Q)",
                  p->zTicketUuid);
  }
  if( p->type==CFTYPE_ATTACHMENT ){
    db_multi_exec(
       "INSERT INTO attachment(attachid, mtime, src, target,"
                                        "filename, comment, user)"
       "VALUES(%d,%.17g,%Q,%Q,%Q,%Q,%Q);",
       rid, p->rDate, p->zAttachSrc, p->zAttachTarget, p->zAttachName,
       (p->zComment ? p->zComment : ""), p->zUser
    );
    db_multi_exec(
       "UPDATE attachment SET isLatest = (mtime=="
          "(SELECT max(mtime) FROM attachment"
          "  WHERE target=%Q AND filename=%Q))"
       " WHERE target=%Q AND filename=%Q",
       p->zAttachTarget, p->zAttachName,
       p->zAttachTarget, p->zAttachName
    );
    if( strlen(p->zAttachTarget)!=UUID_SIZE
     || !validate16(p->zAttachTarget, UUID_SIZE) 
    ){
      char *zComment;
      if( p->zAttachSrc && p->zAttachSrc[0] ){
        zComment = mprintf("Add attachment \"%h\" to wiki page [%h]",
             p->zAttachName, p->zAttachTarget);
      }else{
        zComment = mprintf("Delete attachment \"%h\" from wiki page [%h]",
             p->zAttachName, p->zAttachTarget);
      }
      db_multi_exec(
        "REPLACE INTO event(type,mtime,objid,user,comment)"
        "VALUES('w',%.17g,%d,%Q,%Q)",
        p->rDate, rid, p->zUser, zComment
      );
      free(zComment);
    }else{
      char *zComment;
      if( p->zAttachSrc && p->zAttachSrc[0] ){
        zComment = mprintf("Add attachment \"%h\" to ticket [%.10s]",
             p->zAttachName, p->zAttachTarget);
      }else{
        zComment = mprintf("Delete attachment \"%h\" from ticket [%.10s]",
             p->zAttachName, p->zAttachTarget);
      }
      db_multi_exec(
        "REPLACE INTO event(type,mtime,objid,user,comment)"
        "VALUES('t',%.17g,%d,%Q,%Q)",
        p->rDate, rid, p->zUser, zComment
      );
      free(zComment);
    }
  }
  db_end_transaction(0);
  if( p->type==CFTYPE_MANIFEST ){
    manifest_cache_insert(p);

  }else{







    manifest_destroy(p);



  }




  return 1;


}

  int isInit;
  uint32 buf[4];
  uint32 bits[2];
  unsigned char in[64];
};
typedef struct Context MD5Context;

#if defined(__i386__) || defined(__x86_64__) || defined(_WIN32)
# define byteReverse(A,B)
#else
/*
 * Convert an array of integers to little-endian.
 * Note: this code is a no-op on little-endian machines.
 */
static void byteReverse (unsigned char *buf, unsigned longs){
        uint32 t;
        do {
                t = (uint32)((unsigned)buf[3]<<8 | buf[2]) << 16 |
                            ((unsigned)buf[1]<<8 | buf[0]);
                *(uint32 *)buf = t;
                buf += 4;
        } while (--longs);
}
#endif

/* The four core functions - F1 is optimized somewhat */

/* #define F1(x, y, z) (x & y | ~x & z) */
#define F1(x, y, z) (z ^ (x & (y ^ z)))
#define F2(x, y, z) F1(z, x, y)
#define F3(x, y, z) (x ^ y ^ z)
#define F4(x, y, z) (y ^ (x | ~z))

/*
** Add the content of a blob to the incremental MD5 checksum.
*/
void md5sum_step_blob(Blob *p){
  md5sum_step_text(blob_buffer(p), blob_size(p));
}

/*
** For trouble-shooting only:
**
** Report the current state of the incremental checksum.
*/
const char *md5sum_current_state(void){
  unsigned int cksum = 0;
  unsigned int *pFirst, *pLast;
  static char zResult[12];

  pFirst = (unsigned int*)&incrCtx;
  pLast = (unsigned int*)((&incrCtx)+1);
  while( pFirst<pLast ){
    cksum += *pFirst;
    pFirst++;
  }
  sqlite3_snprintf(sizeof(zResult), zResult, "%08x", cksum);
  return zResult;
}

/*
** Finish the incremental MD5 checksum.  Store the result in blob pOut
** if pOut!=0.  Also return a pointer to the result.  
**
** This resets the incremental checksum preparing for the next round
** of computation.  The return pointer points to a static buffer that

int blob_merge(Blob *pPivot, Blob *pV1, Blob *pV2, Blob *pOut){
  int *aC1;              /* Changes from pPivot to pV1 */
  int *aC2;              /* Changes from pPivot to pV2 */
  int i1, i2;            /* Index into aC1[] and aC2[] */
  int nCpy, nDel, nIns;  /* Number of lines to copy, delete, or insert */
  int limit1, limit2;    /* Sizes of aC1[] and aC2[] */
  int nConflict = 0;     /* Number of merge conflicts seen so far */
  static const char zBegin[] = "<<<<<<< BEGIN MERGE CONFLICT\n";
  static const char zMid[]   = "============================\n";
  static const char zEnd[]   = ">>>>>>> END MERGE CONFLICT\n";

  blob_zero(pOut);         /* Merge results stored in pOut */

  /* Compute the edits that occur from pPivot => pV1 (into aC1)
  ** and pPivot => pV2 (into aC2).  Each of the aC1 and aC2 arrays is
  ** an array of integer triples.  Within each triple, the first integer
  ** is the number of lines of text to copy directly from the pivot,

  return rc;
}

/*
** Return TRUE if the string begins with an ISO8601 date: YYYY-MM-DD.
*/
static int is_date(const char *z){
  if( !fossil_isdigit(z[0]) ) return 0;
  if( !fossil_isdigit(z[1]) ) return 0;
  if( !fossil_isdigit(z[2]) ) return 0;
  if( !fossil_isdigit(z[3]) ) return 0;
  if( z[4]!='-') return 0;
  if( !fossil_isdigit(z[5]) ) return 0;
  if( !fossil_isdigit(z[6]) ) return 0;
  if( z[7]!='-') return 0;
  if( !fossil_isdigit(z[8]) ) return 0;
  if( !fossil_isdigit(z[9]) ) return 0;
  return 1;
}

/*
** Convert a symbolic tag name into the UUID of a check-in that contains
** that tag.  If the tag appears on multiple check-ins, return the UUID
** of the most recent check-in with the tag.

  int rid;
  Blob name;

  if( zName==0 || zName[0]==0 ) return 0;
  blob_init(&name, zName, -1);
  if( name_to_uuid(&name, -1) ){
    blob_reset(&name);
    for(i=0; zName[i] && fossil_isdigit(zName[i]); i++){}
    if( zName[i]==0 ){
      rid = atoi(zName);
      if( db_exists("SELECT 1 FROM blob WHERE rid=%d", rid) ){
        return rid;
      }
    }
    fossil_error(1, "no such artifact: %s", zName);