Fossil

** There are three separate database files that fossil interacts
** with:
**
**    (1)  The "user" database in ~/.fossil
**
**    (2)  The "repository" database
**
**    (3)  A local checkout database named "_FOSSIL_" or ".fslckout"
**         and located at the root of the local copy of the source tree.
**
*/
#include "config.h"
#if ! defined(_WIN32)
#  include <pwd.h>
#endif

    cgi_reset_content();
    @ error Database\serror:\s%F(z)
      cgi_reply();
  }
  else if( g.cgiOutput ){
    g.cgiOutput = 0;
    cgi_printf("<h1>Database Error</h1>\n"
               "<pre>%h</pre>\n<p>%s</p>\n", z, zRebuildMsg);
    cgi_reply();
  }else{
    fprintf(stderr, "%s: %s\n\n%s", g.argv[0], z, zRebuildMsg);
  }
  free(z);
  db_force_rollback();
  fossil_exit(rc);

}

/*
** Execute multiple SQL statements.
*/
int db_multi_exec(const char *zSql, ...){
  Blob sql;
  int rc = SQLITE_OK;
  va_list ap;
  const char *z, *zEnd;
  sqlite3_stmt *pStmt;
  blob_init(&sql, 0, 0);
  va_start(ap, zSql);
  blob_vappendf(&sql, zSql, ap);
  va_end(ap);
  z = blob_str(&sql);
  while( rc==SQLITE_OK && z[0] ){
    pStmt = 0;
    rc = sqlite3_prepare_v2(g.db, z, -1, &pStmt, &zEnd);
    if( rc!=SQLITE_OK ) break;
    if( pStmt ){
      db.nPrepare++;
      while( sqlite3_step(pStmt)==SQLITE_ROW ){}
      rc = sqlite3_finalize(pStmt);
      if( rc ) db_err("%s: {%.*s}", sqlite3_errmsg(g.db), (int)(zEnd-z), z);
    }
    z = zEnd;
  }
  blob_reset(&sql);
  return rc;
}

/*
** Optionally make the following changes to the database if feasible and

  ...                      /* Additional SQL to run.  Terminate with NULL. */
){
  sqlite3 *db;
  int rc;
  const char *zSql;
  va_list ap;

  db = db_open(zFileName);




  sqlite3_exec(db, "BEGIN EXCLUSIVE", 0, 0, 0);
  rc = sqlite3_exec(db, zSchema, 0, 0, 0);
  if( rc!=SQLITE_OK ){
    db_err(sqlite3_errmsg(db));
  }
  va_start(ap, zSchema);
  while( (zSql = va_arg(ap, const char*))!=0 ){

}


/*
** Open a database file.  Return a pointer to the new database
** connection.  An error results in process abort.
*/
LOCAL sqlite3 *db_open(const char *zDbName){
  int rc;
  const char *zVfs;
  sqlite3 *db;

  if( g.fSqlTrace ) fossil_trace("-- sqlite3_open: [%s]\n", zDbName);
  zVfs = fossil_getenv("FOSSIL_VFS");
  rc = sqlite3_open_v2(
       zDbName, &db,
       SQLITE_OPEN_READWRITE | SQLITE_OPEN_CREATE,
       zVfs
  );
  if( rc!=SQLITE_OK ){
    db_err("[%s]: %s", zDbName, sqlite3_errmsg(db));
  }
  sqlite3_busy_timeout(db, 5000);
  sqlite3_wal_autocheckpoint(db, 1);  /* Set to checkpoint frequently */
  sqlite3_create_function(db, "now", 0, SQLITE_ANY, 0, db_now_function, 0, 0);
  sqlite3_create_function(db, "checkin_mtime", 2, SQLITE_ANY, 0,
                          db_checkin_mtime_function, 0, 0);
  sqlite3_create_function(db, "user", 0, SQLITE_ANY, 0, db_sql_user, 0, 0);
  sqlite3_create_function(db, "cgi", 1, SQLITE_ANY, 0, db_sql_cgi, 0, 0);
  sqlite3_create_function(db, "cgi", 2, SQLITE_ANY, 0, db_sql_cgi, 0, 0);
  sqlite3_create_function(db, "print", -1, SQLITE_UTF8, 0,db_sql_print,0,0);
  sqlite3_create_function(
    db, "is_selected", 1, SQLITE_UTF8, 0, file_is_selected,0,0
  );
  sqlite3_create_function(
    db, "if_selected", 3, SQLITE_UTF8, 0, file_is_selected,0,0
  );
  if( g.fSqlTrace ) sqlite3_trace(db, db_sql_trace, 0);
  re_add_sql_func(db);
  sqlite3_exec(db, "PRAGMA foreign_keys=OFF;", 0, 0, 0);
  return db;
}


/*
** Detaches the zLabel database.
*/

void db_open_or_attach(
  const char *zDbName,
  const char *zLabel,
  int *pWasAttached
){
  if( !g.db ){
    assert( g.zMainDbType==0 );
    g.db = db_open(zDbName);
    g.zMainDbType = zLabel;

    if ( pWasAttached ) *pWasAttached = 0;
  }else{
    assert( g.zMainDbType!=0 );
    db_attach(zDbName, zLabel);
    if ( pWasAttached ) *pWasAttached = 1;
  }
}

  }
  if( useAttach ){
    db_open_or_attach(zDbName, "configdb", &g.useAttach);
    g.dbConfig = 0;
    g.zConfigDbType = 0;
  }else{
    g.useAttach = 0;
    g.dbConfig = db_open(zDbName);
    g.zConfigDbType = "configdb";
  }
  g.configOpen = 1;
  free(zDbName);
}

** Create the default user accounts in the USER table.
*/
void db_create_default_users(int setupUserOnly, const char *zDefaultUser){
  const char *zUser = zDefaultUser;
  if( zUser==0 ){
    zUser = db_get("default-user", 0);
  }
  if( zUser==0 ){
    zUser = fossil_getenv("FOSSIL_USER");
  }
  if( zUser==0 ){
#if defined(_WIN32)
    zUser = fossil_getenv("USERNAME");
#else
    zUser = fossil_getenv("USER");
#endif
  }

/*
** SQL functions for debugging.
**
** The print() function writes its arguments on stdout, but only
** if the -sqlprint command-line option is turned on.
*/
LOCAL void db_sql_print(
  sqlite3_context *context,
  int argc,
  sqlite3_value **argv
){
  int i;
  if( g.fSqlPrint ){
    for(i=0; i<argc; i++){
      char c = i==argc-1 ? '\n' : ' ';
      fossil_print("%s%c", sqlite3_value_text(argv[i]), c);
    }
  }
}
LOCAL void db_sql_trace(void *notUsed, const char *zSql){
  int n = strlen(zSql);
  fossil_trace("%s%s\n", zSql, (n>0 && zSql[n-1]==';') ? "" : ";");


}

/*
** Implement the user() SQL function.  user() takes no arguments and
** returns the user ID of the current user.
*/
LOCAL void db_sql_user(
  sqlite3_context *context,
  int argc,
  sqlite3_value **argv
){
  if( g.zLogin!=0 ){
    sqlite3_result_text(context, g.zLogin, -1, SQLITE_STATIC);
  }
}

/*
** Implement the cgi() SQL function.  cgi() takes an argument which is
** a name of CGI query parameter. The value of that parameter is returned,
** if available. Optional second argument will be returned if the first
** doesn't exist as a CGI parameter.
*/
LOCAL void db_sql_cgi(sqlite3_context *context, int argc, sqlite3_value **argv){
  const char* zP;
  if( argc!=1 && argc!=2 ) return;
  zP = P((const char*)sqlite3_value_text(argv[0]));
  if( zP ){
    sqlite3_result_text(context, zP, -1, SQLITE_STATIC);
  }else if( argc==2 ){
    zP = (const char*)sqlite3_value_text(argv[1]);

** named on the command line (g.aCommitFile is NULL meaning that all
** changes are to be committed) or if id is found in g.aCommitFile[]
** (meaning that id was named on the command-line).
**
** In the second form (3 arguments) return argument X if true and Y
** if false.  Except if Y is NULL then always return X.
*/
LOCAL void file_is_selected(
  sqlite3_context *context,
  int argc,
  sqlite3_value **argv
){
  int rc = 0;

  assert(argc==1 || argc==3);

  }
  if( zOut==0 ){
    zOut = mprintf("%s", zKey);
  }
  return zOut;
}























/*
** Return true if the string zVal represents "true" (or "false").
*/
int is_truth(const char *zVal){
  static const char *const azOn[] = { "on", "yes", "true", "1" };
  int i;
  for(i=0; i<sizeof(azOn)/sizeof(azOn[0]); i++){

  { "case-sensitive",0,                0, 0, "on"                  },
  { "crnl-glob",     0,               40, 1, ""                    },
  { "default-perms", 0,               16, 0, "u"                   },
  { "diff-binary",   0,                0, 0, "on"                  },
  { "diff-command",  0,               40, 0, ""                    },
  { "dont-push",     0,                0, 0, "off"                 },
  { "editor",        0,               32, 0, ""                    },
  { "empty-dirs",    0,               40, 1, ""                    },
  { "encoding-glob",  0,              40, 1, ""                    },
  { "gdiff-command", 0,               40, 0, "gdiff"               },
  { "gmerge-command",0,               40, 0, ""                    },
  { "http-port",     0,               16, 0, "8080"                },
  { "https-login",   0,                0, 0, "off"                 },


  { "href-targets",  0,                0, 0, "on"                  },
  { "ignore-glob",   0,               40, 1, ""                    },
  { "localauth",     0,                0, 0, "off"                 },
  { "main-branch",   0,               40, 0, "trunk"               },
  { "manifest",      0,                0, 1, "off"                 },
#ifdef FOSSIL_ENABLE_MARKDOWN
  { "markdown",      0,                0, 0, "off"                 },
#endif
  { "max-upload",    0,               25, 0, "250000"              },
  { "mtime-changes", 0,                0, 0, "on"                  },
  { "pgp-command",   0,               40, 0, "gpg --clearsign -o " },
  { "proxy",         0,               32, 0, "off"                 },
  { "relative-paths",0,                0, 0, "on"                  },
  { "repo-cksum",    0,                0, 0, "on"                  },
  { "self-register", 0,                0, 0, "off"                 },
  { "ssh-command",   0,               40, 0, ""                    },
  { "ssl-ca-location",0,              40, 0, ""                    },
  { "ssl-identity",  0,               40, 0, ""                    },


#ifdef FOSSIL_ENABLE_TCL
  { "tcl",           0,                0, 0, "off"                 },
  { "tcl-setup",     0,               40, 0, ""                    },
#endif
  { "th1-setup",     0,               40, 0, ""                    },
  { "web-browser",   0,               32, 0, ""                    },
  { "white-foreground", 0,             0, 0, "off"                 },
  { 0,0,0,0,0 }
};

/*
** COMMAND: settings

**                     external diff programs.  If FALSE, skip these files.
**
**    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.
**
**    editor           Text editor command used for check-in comments.
**
**    empty-dirs       A comma or newline-separated list of pathnames. On
**     (versionable)   update and checkout commands, if no file or directory
**                     exists with that name, an empty directory will be
**                     created.
**
**    encoding-glob    The VALUE is a comma or newline-separated list of GLOB
**     (versionable)   patterns specifying files that the "commit" command will
**                     ignore when issuing warnings about text files that may
**                     use another encoding than ASCII or UTF-8. Set to "*"
**                     to disable encoding checking.
**
**    gdiff-command    External command to run when performing a graphical
**                     diff. If undefined, text diff will be used.
**
**    gmerge-command   A graphical merge conflict resolver command operating
**                     on four files.
**                     Ex: kdiff3 "%baseline" "%original" "%merge" -o "%output"

**                     Disable on large repositories for a performance
**                     improvement.
**
**    self-register    Allow users to register themselves through the HTTP UI.
**                     This is useful if you want to see other names than
**                     "Anonymous" in e.g. ticketing system. On the other hand
**                     users can not be deleted. Default: off.
**
**    ssh-command      Command used to talk to a remote machine with
**                     the "ssh://" protocol.
**
**    ssl-ca-location  The full pathname to a file containing PEM encoded
**                     CA root certificates, or a directory of certificates
**                     with filenames formed from the certificate hashes as
**                     required by OpenSSL.
**                     If set, this will override the OS default list of
**                     OpenSSL CAs. If unset, the default list will be used.
**                     Some platforms may add additional certificates.
**                     Check your platform behaviour is as required if the
**                     exact contents of the CA root is critical for your
**                     application.
**
**    ssl-identity     The full pathname to a file containing a certificate
**                     and private key in PEM format. Create by concatenating
**                     the certificate and private key files.
**                     This identity will be presented to SSL servers to
**                     authenticate this client, in addition to the normal
**                     password authentication.
**



**    tcl              If enabled (and Fossil was compiled with Tcl support),
**                     Tcl integration commands will be added to the TH1
**                     interpreter, allowing arbitrary Tcl expressions and
**                     scripts to be evaluated from TH1.  Additionally, the Tcl
**                     interpreter will be able to evaluate arbitrary TH1
**                     expressions and scripts. Default: off.
**
**    tcl-setup        This is the setup script to be evaluated after creating
**                     and initializing the Tcl interpreter.  By default, this
**                     is empty and no extra setup is performed.
**
**    th1-setup        This is the setup script to be evaluated after creating
**                     and initializing the TH1 interpreter.  By default, this
**                     is empty and no extra setup is performed.
**





**    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,
**                     and "firefox" on Unix.
**
** Options:
**   --global   set or unset the given property globally instead of