Fossil

** of REQUEST_URI.
**
** SCGI typically omits PATH_INFO.  CGI sometimes omits REQUEST_URI and
** PATH_INFO when it is empty.
**
** CGI Parameter quick reference:
**
**                                      REQUEST_URI
**                               _____________|________________
**                              /                              \
**    https://www.fossil-scm.org/forum/info/12736b30c072551a?t=c
**            \________________/\____/\____________________/ \_/
**                    |            |             |            |
**               HTTP_HOST         |        PATH_INFO     QUERY_STRING
**                            SCRIPT_NAME


*/
void cgi_init(void){
  char *z;
  const char *zType;
  char *zSemi;
  int len;
  const char *zRequestUri = cgi_parameter("REQUEST_URI",0);

#endif
  g.isHTTP = 1;
  cgi_destination(CGI_BODY);

  /* We must have SCRIPT_NAME. If the web server did not supply it, try
  ** to compute it from REQUEST_URI and PATH_INFO. */
  if( zScriptName==0 ){
    size_t nRU, nPI;
    if( zRequestUri==0 || zPathInfo==0 ){
      malformed_request("missing SCRIPT_NAME");  /* Does not return */
    }
    z = strchr(zRequestUri,'?');
    if( z ){
      nRU = (int)(z - zRequestUri);
    }else{
      nRU = strlen(zRequestUri);
    }
    nPI = strlen(zPathInfo);
    if( nRU<nPI ){
      malformed_request("PATH_INFO is longer than REQUEST_URI");
    }
    zScriptName = fossil_strndup(zRequestUri,(int)(nRU-nPI));
    cgi_set_parameter("SCRIPT_NAME", zScriptName);
  }

#ifdef _WIN32
  /* The Microsoft IIS web server does not define REQUEST_URI, instead it uses
  ** PATH_INFO for virtually the same purpose.  Define REQUEST_URI the same as
  ** PATH_INFO and redefine PATH_INFO with SCRIPT_NAME removed from the