Fossil

    zRequestUri = mprintf("%s/%s", zScriptName, z);
    cgi_set_parameter("REQUEST_URI", zRequestUri);
  }
  if( zPathInfo==0 ){
    int i, j;
    for(i=0; zRequestUri[i]==zScriptName[i] && zRequestUri[i]; i++){}
    for(j=i; zRequestUri[j] && zRequestUri[j]!='?'; j++){}
    zPathInfo = mprintf("%.*s", j-i, zRequestUri+i);
    cgi_set_parameter("PATH_INFO", zPathInfo);
  }
#ifdef FOSSIL_ENABLE_JSON
  if(strncmp("/json",zPathInfo,5)==0
     && (zPathInfo[5]==0 || zPathInfo[5]=='/')){
    /* We need to change some following behaviour depending on whether
    ** we are operating in JSON mode or not. We cannot, however, be
    ** certain whether we should/need to be in JSON mode until the
    ** PATH_INFO is set up.
    */
    g.json.isJsonMode = 1;
  }else{
    assert(!g.json.isJsonMode &&
           "Internal misconfiguration of g.json.isJsonMode");
  }
#endif
  z = (char*)P("HTTP_COOKIE");
  if( z ){
    z = mprintf("%s",z);
    add_param_list(z, ';');
  }

  z = (char*)P("QUERY_STRING");

  blob_zero(&g.cgiIn);
  if( len>0 && zType ){
    if( fossil_strcmp(zType, "application/x-fossil")==0 ){
      blob_read_from_channel(&g.cgiIn, g.httpIn, len);
      blob_uncompress(&g.cgiIn, &g.cgiIn);
    }
#ifdef FOSSIL_ENABLE_JSON
    else if( noJson==0 && g.json.isJsonMode!=0 

             && json_can_consume_content_type(zType)!=0 ){

      cgi_parse_POST_JSON(g.httpIn, (unsigned int)len);
      /*
       Potential TODOs:




       1) If parsing fails, immediately return an error response


       without dispatching the ostensibly-upcoming JSON API.




      */
      cgi_set_content_type(json_guess_content_type());
    }
#endif /* FOSSIL_ENABLE_JSON */
    else{
      blob_read_from_channel(&g.cgiIn, g.httpIn, len);
    }

  if( zIpAddr==0 ){
    zIpAddr = cgi_remote_ip(fileno(g.httpIn));
  }
  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;

  "payload" /* payload */,
  "requestId" /*requestId*/,
  "resultCode" /*resultCode*/,
  "resultText" /*resultText*/,
  "timestamp" /*timestamp*/
};



/*
** Returns true (non-0) if fossil appears to be running in JSON mode.
** and either has JSON POSTed input awaiting consumption or fossil is
** running in HTTP mode (in which case certain JSON data *might* be
** available via GET parameters).
*/
int fossil_has_json(){
  return g.json.isJsonMode && (g.isHTTP || g.json.post.o);
}

/*
** Placeholder /json/XXX page impl for NYI (Not Yet Implemented)

          : "application/json";
      }else{
        return "text/plain";
      }
    }
  }
}

/*
 ** Given a request CONTENT_TYPE value, this function returns true
 ** if it is of a type which the JSON API can ostensibly read.
 **
 ** It accepts any of application/json, text/plain, or
 ** application/javascript. The former is preferred, but was not
 ** widespread when this API was initially built, so the latter forms
 ** are permitted as fallbacks.
 */
int json_can_consume_content_type(const char * zType){
  return fossil_strcmp(zType, "application/json")==0
    || fossil_strcmp(zType,"text/plain")==0/*assume this MIGHT be JSON*/
    || fossil_strcmp(zType,"application/javascript")==0;
}

/*
** Sends pResponse to the output stream as the response object.  This
** function does no validation of pResponse except to assert() that it
** is not NULL. The caller is responsible for ensuring that it meets
** API response envelope conventions.
**

  assert(g.json.gc.a && "json_main_bootstrap() was not called!");
  assert( (0==once) && "json_mode_bootstrap() called too many times!");
  if( once ){
    return;
  }else{
    once = 1;
  }
  assert(g.json.isJsonMode
         && "g.json.isJsonMode should have been set up by now.");
  g.json.resultCode = 0;
  g.json.cmd.offset = -1;
  g.json.jsonp = PD("jsonp",NULL)
    /* FIXME: do some sanity checking on g.json.jsonp and ignore it
       if it is not halfway reasonable.
    */
    ;

      break;
    }
    inFile = (0==strcmp("-",jfile))
      ? stdin
      : fossil_fopen(jfile,"rb");
    if(!inFile){
      g.json.resultCode = FSL_JSON_E_FILE_OPEN_FAILED;
      fossil_fatal("Could not open JSON file [%s].",jfile)
        /* Does not return. */
        ;
    }
    cgi_parse_POST_JSON(inFile, 0);

    fossil_fclose(inFile);

    break;
  }

  /* g.json.reqPayload exists only to simplify some of our access to
     the request payload. We currently only use this in the context of
     Object payloads, not Arrays, strings, etc.
  */

    short i = 0;
#define NEXT cson_string_cstr(          \
                 cson_value_get_string( \
                   cson_array_get(ar,i) \
                   ))
    char const * tok = NEXT;
    while( tok ){
      if( g.isHTTP/*workaround for "abbreviated name" in CLI mode*/

          ? (0==strncmp("json",tok,4))
          : (0==strcmp(g.argv[1],tok))
          ){
        g.json.cmd.offset = i;
        break;
      }
      ++i;
      tok = NEXT;
    }

  cson_object * o = NULL;
  int rc;
  resultCode = json_dumbdown_rc(resultCode ? resultCode : g.json.resultCode);
  o = cson_new_object();
  v = cson_object_value(o);
  if( ! o ) return NULL;
#define SET(K) if(!tmp) goto cleanup; \
  cson_value_add_reference(tmp);      \
  rc = cson_object_set( o, K, tmp );  \

  cson_value_free(tmp);               \
  if(rc) do{                          \
    tmp = NULL;                       \
    goto cleanup;                     \
  }while(0)


  tmp = json_new_string(MANIFEST_UUID);
  SET("fossil");

  tmp = json_new_timestamp(-1);
  SET(FossilJsonKeys.timestamp);

  }

  if(g.json.cmd.commandStr){
    tmp = json_new_string(g.json.cmd.commandStr);
  }else{
    tmp = json_response_command_path();
  }
  if(!tmp){
    tmp = json_new_string("???");
  }
  SET("command");

  tmp = json_getenv(FossilJsonKeys.requestId);
  if( tmp ) cson_object_set( o, FossilJsonKeys.requestId, tmp );

  if(0){/* these are only intended for my own testing...*/
    if(g.json.cmd.v){
      tmp = g.json.cmd.v;
      SET("$commandPath");
    }
    if(g.json.param.v){
      tmp = g.json.param.v;
      SET("$params");
    }
    if(0){/*Only for debugging, add some info to the response.*/
      tmp = cson_value_new_integer( g.json.cmd.offset );
      SET("cmd.offset");
      tmp = cson_value_new_bool( g.isHTTP );
      SET("isCGI");
    }
  }

  if(fossil_timer_is_active(g.json.timerId)){
    /* This is, philosophically speaking, not quite the right place
       for ending the timer, but this is the one function which all of
       the JSON exit paths use (and they call it after processing,
       just before they end).
    */
    sqlite3_uint64 span = fossil_timer_stop(g.json.timerId);
    /* I'm actually seeing sub-uSec runtimes in some tests, but a time of
       0 is "just kinda wrong".
    */
    cson_object_set(o,"procTimeUs", cson_value_new_integer((cson_int_t)span));
    span /= 1000/*for milliseconds */;
    cson_object_set(o,"procTimeMs", cson_value_new_integer((cson_int_t)span));
    assert(!fossil_timer_is_active(g.json.timerId));
    g.json.timerId = -1;

  }
  if(g.json.warnings){
    tmp = cson_array_value(g.json.warnings);
    SET("warnings");
  }

  /* Only add the payload to SUCCESS responses. Else delete it. */
  if( NULL != payload ){
    if( resultCode ){
      cson_value_free(payload);
      payload = NULL;
    }else{
      tmp = payload;
      SET(FossilJsonKeys.payload);
    }
  }

  if((g.perm.Admin||g.perm.Setup)
     && json_find_option_bool("debugFossilG","json-debug-g",NULL,0)

     ){
    tmp = json_g_to_json();
    SET("g");
  }

#undef SET
  goto ok;
  cleanup:

** is NULL then json_err_cstr(code) is used.
*/
void json_err( int code, char const * msg, int alsoOutput ){
  int rc = code ? code : (g.json.resultCode
                          ? g.json.resultCode
                          : FSL_JSON_E_UNKNOWN);
  cson_value * resp = NULL;
  if(g.json.isJsonMode==0) return;
  rc = json_dumbdown_rc(rc);
  if( rc && !msg ){
    msg = g.zErrMsg;
    if(!msg){
      msg = json_err_cstr(rc);
    }
  }
  resp = json_create_response(rc, msg, NULL);
  if(!resp){
    /* about the only error case here is out-of-memory. DO NOT
       call fossil_panic() or fossil_fatal() here because those
       allocate.
    */
    fprintf(stderr, "%s: Fatal error: could not allocate "
            "response object.\n", g.argv[0]);
    fossil_exit(1);
  }
  if( g.isHTTP ){
    if(alsoOutput){

    return NULL;
  }
  payV = cson_value_new_object();
  pay = cson_value_get_object(payV);
  listV = cson_value_new_array();
  list = cson_value_get_array(listV);
  if(fossil_has_json()){
    range = json_getenv_cstr("range");
  }

  range = json_find_option_cstr("range",NULL,"r");
  if((!range||!*range) && !g.isHTTP){
    range = find_option("all","a",0);
    if(range && *range){
      range = "a";

  int nRequest;                  /* Total # of HTTP request */
#ifdef FOSSIL_ENABLE_JSON
  struct FossilJsonBits {
    int isJsonMode;            /* True if running in JSON mode, else
                                  false. This changes how errors are
                                  reported. In JSON mode we try to
                                  always output JSON-form error
                                  responses and always (in CGI mode)
                                  exit() with code 0 to avoid an HTTP
                                  500 error.
                               */
    int resultCode;            /* used for passing back specific codes
                               ** from /json callbacks. */
    int errorDetailParanoia;   /* 0=full error codes, 1=%10, 2=%100, 3=%1000 */
    cson_output_opt outOpt;    /* formatting options for JSON mode. */
    cson_value *authToken;     /* authentication token */
    const char *jsonp;         /* Name of JSONP function wrapper. */

    dispatch_matching_names(zCmdName, &couldbe);
    fossil_print("%s: ambiguous command prefix: %s\n"
                 "%s: could be any of:%s\n"
                 "%s: use \"help\" for more information\n",
                 g.argv[0], zCmdName, g.argv[0], blob_str(&couldbe), g.argv[0]);
    fossil_exit(1);
  }
#ifdef FOSSIL_ENABLE_JSON
  else if( rc==0 && strcmp("json",pCmd->zName)==0 ){
    g.json.isJsonMode = 1;
  }else{
    assert(!g.json.isJsonMode && "JSON-mode misconfiguration.");
  }
#endif
  atexit( fossil_atexit );
#ifdef FOSSIL_ENABLE_TH1_HOOKS
  /*
  ** The TH1 return codes from the hook will be handled as follows:
  **
  ** TH_OK: The xFunc() and the TH1 notification will both be executed.
  **

  /* Handle universal query parameters */
  if( PB("utc") ){
    g.fTimeFormat = 1;
  }else if( PB("localtime") ){
    g.fTimeFormat = 2;
  }
#ifdef FOSSIL_ENABLE_JSON
  /*
  ** Ensure that JSON mode is set up if we're visiting /json, to allow
  ** us to customize some following behaviour (error handling and only
  ** process JSON-mode POST data if we're actually in a /json
  ** page). This is normally set up before this routine is called, but
  ** it looks like the ssh_request_loop() approach to dispatching
  ** might bypass that.
  */
  if( g.json.isJsonMode==0 && zPathInfo!=0
      && 0==strncmp("/json",zPathInfo,5)
      && (zPathInfo[5]==0 || zPathInfo[5]=='/')){
    g.json.isJsonMode = 1;
  }
#endif
  /* If the repository has not been opened already, then find the
  ** repository based on the first element of PATH_INFO and open it.
  */
  if( !g.repositoryOpen ){
    char *zRepo;               /* Candidate repository name */
    char *zToFree = 0;         /* Malloced memory that needs to be freed */
    const char *zCleanRepo;    /* zRepo with surplus leading "/" removed */

          return;
        }
        zRepo[j] = '.';
      }

      /* If we reach this point, it means that the search of the PATH_INFO
      ** string is finished.  Either zRepo contains the name of the
      ** repository to be used, or else no repository could be found and
      ** some kind of error response is required.
      */
      if( szFile<1024 ){
        set_base_url(0);
        if( (zPathInfo[0]==0 || strcmp(zPathInfo,"/")==0)
                  && allowRepoList
                  && repo_list_page() ){

      zPath[i] = 0;
      g.zExtra = &zPath[i+1];
    }else{
      g.zExtra = 0;
    }
    break;
  }











  if( g.zExtra ){
    /* CGI parameters get this treatment elsewhere, but places like getfile
    ** will use g.zExtra directly.
    ** Reminder: the login mechanism uses 'name' differently, and may
    ** eventually have a problem/collision with this.
    **
    ** Disabled by stephan when running in JSON mode because this

  it's needed.
- `warnings`: Reserved for future use as a standard place to put
  non-fatal warnings in responses. Will be an array but the warning
  structure/type is not yet specified. Intended primarily as a
  debugging tool, and will "probably not" become part of the public
  client interface.
- `g`: Fossil administrators (those with the "a" or "s" permissions)
  may set the `debugFossilG` boolean request parameter (CLI:
  `--json-debug-g`) to enable this property for any given response. It
  contains a good deal of the server-side internal state at the time
  the response was generated, which is often useful in debuggering
  problems. Trivia: it is called "g" because that's the name of
  fossil's internal global state object.
- `procTimeMs`: For debugging only - generic clients must not rely on
  this property. Contains the number of milliseconds the JSON command
  processor needed to dispatch and process the command. TODO: move the