x[2] = "0123456789ABCDEF"[c&0xf];
      blob_append(pOut, x, 3);
      iCol += 3;
    }
  }
}








#if INTERFACE
/*
** An instance of the following object is used to send emails.
*/
struct AlertSender {
  sqlite3 *db;               /* Database emails are sent to */
  sqlite3_stmt *pStmt;       /* Stmt to insert into the database */

#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
# include <io.h>
# include <fcntl.h>
# undef popen
# define popen _popen
# undef pclose
# define pclose _pclose
#else
# include <sys/types.h>
# include <signal.h>
# include <pwd.h>
#endif

/*

struct mark_t {
  char *name;       /* Name of the mark.  Also starts with ":" */
  int rid;          /* Corresponding object in the BLOB table */
  char uuid[65];    /* The GIT hash name for this object */
};
#endif








/*
** Output a "committer" record for the given user.
** NOTE: the given user name may be an email itself.
*/
static void print_person(const char *zUser){
  static Stmt q;
  const char *zContact;

** same login system as the main repository, and appear to be
** an integrated part of the repository.
*/
#include "config.h"
#include "extcgi.h"
#include <assert.h>








/*
** These are the environment variables that should be set for CGI
** extension programs:
*/
static const char *azCgiEnv[] = {
   "AUTH_TYPE",
   "AUTH_CONTENT",

  return 0;
}

/*
** Default SSH command
*/
#if 0 /* was: defined(_WIN32).  Windows generally has ssh now. */
static const char zDefaultSshCmd[] = "plink -ssh";
#else
static const char zDefaultSshCmd[] = "ssh -e none";
#endif

/*
** Initialize a Blob to the name of the configured SSH command.
*/
void transport_ssh_command(Blob *p){
  char *zSsh;        /* The base SSH command */

  char *zHost;       /* The host name to contact */

  socket_ssh_resolve_addr(pUrlData);
  transport_ssh_command(&zCmd);
  if( pUrlData->port!=pUrlData->dfltPort && pUrlData->port ){
    blob_appendf(&zCmd, " -p %d", pUrlData->port);
  }
  blob_appendf(&zCmd, " -T --");  /* End of switches */
  if( pUrlData->user && pUrlData->user[0] ){
    zHost = mprintf("%s@%s", pUrlData->user, pUrlData->name);
    blob_append_escaped_arg(&zCmd, zHost, 0);
    fossil_free(zHost);
  }else{
    blob_append_escaped_arg(&zCmd, pUrlData->name, 0);
  }

** "*.fossil*" will be served as static content.  With the "ui" command,
** the REPOSITORY can only be a directory if the --notfound option is
** also present.
**
** If the REPOSITORY is a directory name which is the root of a
** checkout, it will chdir to that directory and, unless overridden by
** the --page option, select the current checkout version in the
** timeline by default.  This only works for the "fossil ui" command,
** not the "fossil server" command.
**
** If the REPOSITORY argument has a "HOST:" or "USER@HOST:" prefix, then
** the command is run on the remote host specified and the results are
** tunneled back to the localhost via SSH.  This feature only works for
** the "fossil ui" command, not the "fossil server" command.
**
** For the special case REPOSITORY name of "/", the global configuration
** database is consulted for a list of all known repositories.  The --repolist
** option is implied by this special case.  See also the "fossil all ui"
** command.
**
** By default, the "ui" command provides full administrative access without
** having to log in.  This can be disabled by turning off the "localauth"
** setting.  Automatic login for the "server" command is available if the

  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 */
  int fCreate = 0;           /* The --create flag */
  const char *zInitPage = 0; /* Start on this page.  --page option */
  int findServerArg = 2;     /* argv index for find_server_repository() */
  char *zRemote = 0;         /* Remote host on which to run "fossil ui" */
  

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

  if( g.zErrlog==0 ){

      }
      findServerArg = 99;
      fCreate = 0;
      g.argv[2] = 0;
      --g.argc;
    }
  }
  if( isUiCmd && 3==g.argc
   && (zRemote = (char*)file_skip_userhost(g.argv[2]))!=0
  ){
    const char *zRepoTail = file_skip_userhost(g.argv[2]);
    unsigned x;
    int n;
    sqlite3_randomness(2,&x);
    zPort = mprintf("%d", 8100+(x%32000));
    n = (int)(zRepoTail - g.argv[2]) - 1;
    zRemote = mprintf("%.*s", n, g.argv[2]);
    g.argv[2] = (char*)zRepoTail;
  }
  if( isUiCmd ){
    flags |= HTTP_SERVER_LOCALHOST|HTTP_SERVER_REPOLIST;
    g.useLocalauth = 1;
    allowRepoList = 1;
  }
  if( !zRemote ){
    find_server_repository(findServerArg, fCreate);
  }
  if( zInitPage==0 ){
    if( isUiCmd && g.localOpen ){
      zInitPage = "timeline?c=current";
    }else{
      zInitPage = "";
    }
  }

      }
    }
    iPort = mxPort = atoi(zPort);
  }else{
    iPort = db_get_int("http-port", 8080);
    mxPort = iPort+100;
  }


  if( isUiCmd ){
    char *zBrowserArg;
    zBrowser = fossil_web_browser();
    if( zIpAddr==0 ){
      zBrowserArg = mprintf("http://localhost:%%d/%s", zInitPage);

    }else if( strchr(zIpAddr,':') ){
      zBrowserArg = mprintf("http://[%s]:%%d/%s", zIpAddr, zInitPage);
    }else{
      zBrowserArg = mprintf("http://%s:%%d/%s", zIpAddr, zInitPage);
    }
#ifdef _WIN32
    zBrowserCmd = mprintf("%s %s &", zBrowser, zBrowserArg);
#else
    zBrowserCmd = mprintf("%s %!$ &", zBrowser, zBrowserArg);
#endif
    fossil_free(zBrowserArg);
  }
  if( zRemote && zBrowserCmd ){
    FILE *sshIn;
    Blob ssh;
    char zLine[1000];
    blob_init(&ssh, 0, 0);
    transport_ssh_command(&ssh);
    blob_appendf(&ssh, 
       " -t -L127.0.0.1:%d:127.0.0.1:%d -- %!$"
       " fossil server --nossl --port %d %!$",
       iPort, iPort, zRemote, iPort, g.argv[2]);
    fossil_print("%s\n", blob_str(&ssh));
    sshIn = popen(blob_str(&ssh), "r");
    if( sshIn==0 ){
      fossil_fatal("unable to %s", blob_str(&ssh));
    }
    while( fgets(zLine, sizeof(zLine), sshIn) ){
      fossil_print("%s", zLine);
      fflush(stdout);
      if( zBrowserCmd ){
        char *zCmd = mprintf(zBrowserCmd/*works-like:"%d"*/,iPort);
        fossil_system(zCmd);
        fossil_free(zCmd);
        fossil_free(zBrowserCmd);
        zBrowserCmd = 0;
      }
    }
    pclose(sshIn);
    fossil_free(zBrowserCmd);
    return;
  }
#if !defined(_WIN32)
  /* Unix implementation */
  if( g.repositoryOpen ) flags |= HTTP_SERVER_HAD_REPOSITORY;
  if( g.localOpen ) flags |= HTTP_SERVER_HAD_CHECKOUT;
  db_close(1);
  if( cgi_http_server(iPort, mxPort, zBrowserCmd, zIpAddr, flags) ){
    fossil_fatal("unable to listen on TCP socket %d", iPort);
  }
  /* For the parent process, the cgi_http_server() command above never

  process_one_web_page(zNotFound, glob_create(zFileGlob), allowRepoList);
  if( g.fAnyTrace ){
    fprintf(stderr, "/***** Webpage finished in subprocess %d *****/\n",
            getpid());
  }
#else
  /* Win32 implementation */













  if( g.repositoryOpen ) flags |= HTTP_SERVER_HAD_REPOSITORY;
  if( g.localOpen ) flags |= HTTP_SERVER_HAD_CHECKOUT;
  db_close(1);
  if( allowRepoList ){
    flags |= HTTP_SERVER_REPOLIST;
  }
  if( win32_http_service(iPort, zAltBase, zNotFound, zFileGlob, flags) ){

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












/*
** Try to compute the name of the computer on which this process
** is running.
*/
char *fossil_hostname(void){
  FILE *in;
  char zBuf[200];

    blob_init(&cmd, 0, 0);
    blob_append_escaped_arg(&cmd, g.nameOfExe, 1);
    blob_appendf(&cmd, " patch %s%s %$ -", zRemoteCmd, zForce, zDir);
  }else{
    Blob remote;
    *(char*)(zDir-1) = 0;
    transport_ssh_command(&cmd);
    blob_appendf(&cmd, " -T");
    blob_append_escaped_arg(&cmd, zRemote, 0);
    blob_init(&remote, 0, 0);
    blob_appendf(&remote, "fossil patch %s%s --dir64 %z -", 
                 zRemoteCmd, zForce, encode64(zDir, -1));
    blob_append_escaped_arg(&cmd, blob_str(&remote), 0);
    blob_reset(&remote);
  }

void freepass(){
  if( !zPwdBuffer ) return;
  assert( nPwdBuffer>0 );
  fossil_secure_free_page(zPwdBuffer, nPwdBuffer);
}
#endif










/*
** Scramble substitution matrix:
*/
static char aSubst[256];

/*
** Descramble the password