if( g.db==0 && file_isfile(zRepo) ){
      db_open_repository(zRepo);
    }
  }
#endif
  return zRepo;
}

/*
** Generate a web-page that lists all repositories located under the
** g.zRepositoryName directory and return non-zero.
**
** Or, if no repositories can be located beneath g.zRepositoryName,
** return 0.
*/
static int repo_list_page(void){
  Blob base;
  int n = 0;

  assert( g.db==0 );
  blob_init(&base, g.zRepositoryName, -1);
  sqlite3_open(":memory:", &g.db);
  db_multi_exec("CREATE TABLE sfile(x TEXT);");
  db_multi_exec("CREATE TABLE vfile(pathname);");
  vfile_scan(&base, blob_size(&base), 0, 0, 0);
  db_multi_exec("DELETE FROM sfile WHERE x NOT GLOB '*.fossil'");
  n = db_int(0, "SELECT count(*) FROM sfile");
  if( n>0 ){
    Stmt q;
    @ <h1>Available Repositories:</h1>
    @ <ol>
    db_prepare(&q, "SELECT x, substr(x,-7,-100000)||'/home'"
                   " FROM sfile ORDER BY x COLLATE nocase;");
    while( db_step(&q)==SQLITE_ROW ){
      const char *zName = db_column_text(&q, 0);
      const char *zUrl = db_column_text(&q, 1);
      @ <li><a href="%h(zUrl)">%h(zName)</a></li>
    }
    @ </ol>
    cgi_reply();
  }
  sqlite3_close(g.db);
  g.db = 0;
  return n;
}

/*
** Preconditions:
**
**  * Environment variables are set up according to the CGI standard.
**
** If the repository is known, it has already been opened.  If unknown,

** Or, if an ordinary file named $prefix is found, and $prefix matches
** pFileGlob and $prefix does not match "*.fossil*" and the mimetype of
** $prefix can be determined from its suffix, then the file $prefix is
** returned as static text.
**
** If no suitable webpage is found, try to redirect to zNotFound.
*/
static void process_one_web_page(
  const char *zNotFound,      /* Redirect here on a 404 if not NULL */
  Glob *pFileGlob,            /* Deliver static files matching */
  int allowRepoList           /* Send repo list for "/" URL */
){
  const char *zPathInfo;
  char *zPath = NULL;
  int idx;
  int i;

  /* If the repository has not been opened already, then find the
  ** repository based on the first element of PATH_INFO and open it.

        zRepo[j] = '.';
      }

      if( szFile<1024 ){
        set_base_url(0);
        if( zNotFound ){
          cgi_redirect(zNotFound);
        }else if( strcmp(zPathInfo,"/")==0 && repo_list_page() ){
          /* Will return a list of repositories */
        }else{
#ifdef FOSSIL_ENABLE_JSON
          if(g.json.isJsonMode){
            json_err(FSL_JSON_E_RESOURCE_NOT_FOUND,NULL,1);
            return;
          }
#endif

*/
void cmd_cgi(void){
  const char *zFile;
  const char *zNotFound = 0;
  char **azRedirect = 0;             /* List of repositories to redirect to */
  int nRedirect = 0;                 /* Number of entries in azRedirect */
  Glob *pFileGlob = 0;               /* Pattern for files */
  int allowRepoList = 0;             /* Allow lists of repository files */
  Blob config, line, key, value, value2;
  if( g.argc==3 && fossil_strcmp(g.argv[1],"cgi")==0 ){
    zFile = g.argv[2];
  }else{
    zFile = g.argv[1];
  }
  g.httpOut = stdout;

      /* localauth
      **
      ** Grant "administrator" privileges to users connecting with HTTP
      ** from IP address 127.0.0.1.  Do not bother checking credentials.
      */
      g.useLocalauth = 1;
      continue;
    }
    if( blob_eq(&key, "repolist") ){
      /* repolist
      **
      ** If using "directory:" and the URL is "/" then generate a page
      ** showing a list of available repositories.
      */
      allowRepoList = 1;
      continue;
    }
    if( blob_eq(&key, "redirect:") && blob_token(&line, &value)
            && blob_token(&line, &value2) ){
      /* See the header comment on the redirect_web_page() function
      ** above for details. */
      nRedirect++;
      azRedirect = fossil_realloc(azRedirect, 2*nRedirect*sizeof(char*));

  if( g.db==0 && g.zRepositoryName==0 && nRedirect==0 ){
    cgi_panic("Unable to find or open the project repository");
  }
  cgi_init();
  if( nRedirect ){
    redirect_web_page(nRedirect, azRedirect);
  }else{
    process_one_web_page(zNotFound, pFileGlob, allowRepoList);
  }
}

/*
** If g.argv[arg] exists then it is either the name of a repository
** that will be used by a server, or else it is a directory that
** contains multiple repositories that can be served.  If g.argv[arg]
** is a directory, the repositories it contains must be named
** "*.fossil".  If g.argv[arg] does not exists, then we must be within
** a check-out and the repository to be served is the repository of
** that check-out.
**
** Open the repository to be served if it is known.  If g.argv[arg] is
** a directory full of repositories, then set g.zRepositoryName to
** the name of that directory and the specific repository will be
** opened later by process_one_web_page() based on the content of
** the PATH_INFO variable.



*/
static void find_server_repository(int arg){
  if( g.argc<=arg ){
    db_must_be_within_tree();
  }else if( file_isdir(g.argv[arg])==1 ){



    g.zRepositoryName = mprintf("%s", g.argv[arg]);
    file_simplify_name(g.zRepositoryName, -1, 0);

  }else{
    db_open_repository(g.argv[arg]);
  }
}

/*
** undocumented format:

** thus also no redirecting from http: to https: will take place.
**
** If the --localauth option is given, then automatic login is performed
** for requests coming from localhost, if the "localauth" setting is not
** enabled.
**
** Options:
**   --baseurl URL    base URL (useful with reverse proxies)
**   --files GLOB     comma-separate glob patterns for static file to serve
**   --localauth      enable automatic login for local connections
**   --host NAME      specify hostname of the server
**   --https          signal a request coming in via https
**   --nojail         drop root privilege but do not enter the chroot jail
**   --nossl          signal that no SSL connections are available
**   --notfound URL   use URL as "HTTP 404, object not found" page.

**   --repolist       If REPOSITORY is directory, URL "/" lists all repos
**   --scgi           Interpret input as SCGI rather than HTTP
**   --skin LABEL     Use override skin LABEL
**
** See also: cgi, server, winsrv
*/
void cmd_http(void){
  const char *zIpAddr = 0;
  const char *zNotFound;
  const char *zHost;
  const char *zAltBase;
  const char *zFileGlob;
  int useSCGI;
  int noJail;
  int allowRepoList;

  /* The winhttp module passes the --files option as --files-urlenc with
  ** the argument being URL encoded, to avoid wildcard expansion in the
  ** shell.  This option is for internal use and is undocumented.
  */
  zFileGlob = find_option("files-urlenc",0,1);
  if( zFileGlob ){
    char *z = mprintf("%s", zFileGlob);
    dehttpize(z);
    zFileGlob = z;
  }else{
    zFileGlob = find_option("files",0,1);
  }
  skin_override();
  zNotFound = find_option("notfound", 0, 1);
  noJail = find_option("nojail",0,0)!=0;
  allowRepoList = find_option("repolist",0,0)!=0;
  g.useLocalauth = find_option("localauth", 0, 0)!=0;
  g.sslNotAvailable = find_option("nossl", 0, 0)!=0;
  useSCGI = find_option("scgi", 0, 0)!=0;
  zAltBase = find_option("baseurl", 0, 1);
  if( zAltBase ) set_base_url(zAltBase);
  if( find_option("https",0,0)!=0 ){
    zIpAddr = fossil_getenv("REMOTE_HOST"); /* From stunnel */

    fossil_fatal("no repository specified");
  }
  g.fullHttpReply = 1;
  if( g.argc>=5 ){
    g.httpIn = fossil_fopen(g.argv[2], "rb");
    g.httpOut = fossil_fopen(g.argv[3], "wb");
    zIpAddr = g.argv[4];
    find_server_repository(5);
  }else{
    g.httpIn = stdin;
    g.httpOut = stdout;
    find_server_repository(2);
  }
  if( zIpAddr==0 ){
    zIpAddr = cgi_ssh_remote_addr(0);
    if( zIpAddr && zIpAddr[0] ){
      g.fSshClient |= CGI_SSH_CLIENT;
    }
  }
  g.zRepositoryName = enter_chroot_jail(g.zRepositoryName, noJail);
  if( useSCGI ){
    cgi_handle_scgi_request();
  }else if( g.fSshClient & CGI_SSH_CLIENT ){
    ssh_request_loop(zIpAddr, glob_create(zFileGlob));
  }else{
    cgi_handle_http_request(zIpAddr);
  }
  process_one_web_page(zNotFound, glob_create(zFileGlob), allowRepoList);
}

/*
** Process all requests in a single SSH connection if possible.
*/
void ssh_request_loop(const char *zIpAddr, Glob *FileGlob){
  blob_zero(&g.cgiIn);
  do{
    cgi_handle_ssh_http_request(zIpAddr);
    process_one_web_page(0, FileGlob, 0);
    blob_reset(&g.cgiIn);
  } while ( g.fSshClient & CGI_SSH_FOSSIL ||
          g.fSshClient & CGI_SSH_COMPAT );
}

/*
** Note that the following command is used by ssh:// processing.
**
** COMMAND: test-http
** Works like the http command but gives setup permission to all users.
**
*/
void cmd_test_http(void){
  const char *zIpAddr;    /* IP address of remote client */

  Th_InitTraceLog();
  login_set_capabilities("sx", 0);
  g.useLocalauth = 1;
  g.httpIn = stdin;
  g.httpOut = stdout;
  find_server_repository(2);
  g.cgiOutput = 1;
  g.fullHttpReply = 1;
  zIpAddr = cgi_ssh_remote_addr(0);
  if( zIpAddr && zIpAddr[0] ){
    g.fSshClient |= CGI_SSH_CLIENT;
    ssh_request_loop(zIpAddr, 0);
  }else{
    cgi_set_parameter("REMOTE_ADDR", "127.0.0.1");
    cgi_handle_http_request(0);
    process_one_web_page(0, 0, 0);
  }
}

#if !defined(_WIN32)
#if !defined(__DARWIN__) && !defined(__APPLE__) && !defined(__HAIKU__)
/*
** Search for an executable on the PATH environment variable.

**   --files GLOBLIST    Comma-separated list of glob patterns for static files
**   --localauth         enable automatic login for requests from localhost
**   --localhost         listen on 127.0.0.1 only (always true for "ui")
**   --nojail            Drop root privileges but do not enter the chroot jail
**   --notfound URL      Redirect
**   -P|--port TCPPORT   listen to request on port TCPPORT
**   --th-trace          trace TH1 execution (for debugging purposes)
**   --repolist          If REPOSITORY is dir, URL "/" lists repos.
**   --scgi              Accept SCGI rather than HTTP
**   --skin LABEL        Use override skin LABEL

**
** See also: cgi, http, winsrv
*/
void cmd_webserver(void){
  int iPort, mxPort;        /* Range of TCP ports allowed */
  const char *zPort;        /* Value of the --port option */
  const char *zBrowser;     /* Name of web browser program */
  char *zBrowserCmd = 0;    /* Command to launch the web browser */
  int isUiCmd;              /* True if command is "ui", not "server' */
  const char *zNotFound;    /* The --notfound option or NULL */
  int flags = 0;            /* Server flags */
#if !defined(_WIN32)
  int noJail;               /* Do not enter the chroot jail */
#endif
  int allowRepoList;        /* List repositories on URL "/" */
  const char *zAltBase;     /* Argument to the --baseurl option */
  const char *zFileGlob;    /* Static content must match this */
  char *zIpAddr = 0;        /* Bind to this IP address */

#if defined(_WIN32)
  const char *zStopperFile;    /* Name of file used to terminate server */
  zStopperFile = find_option("stopper", 0, 1);

#if !defined(_WIN32)
  noJail = find_option("nojail",0,0)!=0;
#endif
  g.useLocalauth = find_option("localauth", 0, 0)!=0;
  Th_InitTraceLog();
  zPort = find_option("port", "P", 1);
  zNotFound = find_option("notfound", 0, 1);
  allowRepoList = find_option("repolist",0,0)!=0;
  zAltBase = find_option("baseurl", 0, 1);
  if( find_option("scgi", 0, 0)!=0 ) flags |= HTTP_SERVER_SCGI;
  if( zAltBase ){
    set_base_url(zAltBase);
  }
  if( find_option("localhost", 0, 0)!=0 ){
    flags |= HTTP_SERVER_LOCALHOST;
  }

  /* We should be done with options.. */
  verify_all_options();

  if( g.argc!=2 && g.argc!=3 ) usage("?REPOSITORY?");
  isUiCmd = g.argv[1][0]=='u';
  if( isUiCmd ){
    flags |= HTTP_SERVER_LOCALHOST;
    g.useLocalauth = 1;
    allowRepoList = 1;
  }
  find_server_repository(2);
  if( zPort ){
    int i;
    for(i=strlen(zPort)-1; i>=0 && zPort[i]!=':'; i--){}
    if( i>0 ){
      zIpAddr = mprintf("%.*s", i, zPort);
      zPort += i+1;
    }

  g.sslNotAvailable = 1;
  g.httpIn = stdin;
  g.httpOut = stdout;
  if( g.fHttpTrace || g.fSqlTrace ){
    fprintf(stderr, "====== SERVER pid %d =======\n", getpid());
  }
  g.cgiOutput = 1;
  find_server_repository(2);
  g.zRepositoryName = enter_chroot_jail(g.zRepositoryName, noJail);
  if( flags & HTTP_SERVER_SCGI ){
    cgi_handle_scgi_request();
  }else{
    cgi_handle_http_request(0);
  }
  process_one_web_page(zNotFound, glob_create(zFileGlob), allowRepoList);
#else
  /* Win32 implementation */
  if( isUiCmd ){
    zBrowser = db_get("web-browser", "start");
    if( zIpAddr ){
      zBrowserCmd = mprintf("%s http://%s:%%d/ &", zBrowser, zIpAddr);
    }else{