mdw@git.distorted.org.uk Git - userv-utils/blob - www-cgi/ucgicommon.c

   1 /*
   2  * Copyright (C) 1998-1999,2003 Ian Jackson
   3  *
   4  * This is free software; you can redistribute it and/or modify it
   5  * under the terms of the GNU General Public License as published by
   6  * the Free Software Foundation; either version 2 of the License, or
   7  * (at your option) any later version.
   8  *
   9  * This program is distributed in the hope that it will be useful, but
  10  * WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with userv-utils; if not, write to the Free Software
  16  * Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  17  *
  18  * $Id$
  19  */
  20
  21 #include <stdio.h>
  22 #include <string.h>
  23 #include <errno.h>
  24
  25 #include "ucgi.h"
  26
  27 const char *const envok[]= {
  28   "AUTH_TYPE",
  29   "CONTENT_LENGTH",
  30   "CONTENT_TYPE",
  31   "DOCUMENT_ROOT",
  32   "GATEWAY_INTERFACE",
  33   "HTTP_ACCEPT",
  34   "HTTP_ACCEPT_CHARSET",
  35   "HTTP_ACCEPT_ENCODING",
  36   "HTTP_ACCEPT_LANGUAGE",
  37   "HTTP_CACHE_CONTROL",
  38   "HTTP_CONNECTION",
  39   "HTTP_CONTENT_ENCODING",
  40   "HTTP_COOKIE",
  41   "HTTP_DNT",
  42   "HTTP_HOST",
  43   "HTTP_KEEP_ALIVE",
  44   "HTTP_NEGOTIATE",
  45   "HTTP_PRAGMA",
  46   "HTTP_REFERER",
  47   "HTTP_USER_AGENT",
  48   "HTTP_VIA",
  49   "HTTP_X_FORWARDED_FOR",
  50   "HTTPS",
  51   "PATH_INFO",
  52   "PATH_TRANSLATED",
  53   "QUERY_STRING",
  54   "REMOTE_ADDR",
  55   "REMOTE_HOST",
  56   "REMOTE_USER",
  57   "REMOTE_IDENT",
  58   "REQUEST_METHOD",
  59   "REQUEST_URI",
  60   "SCRIPT_FILENAME",
  61   "SCRIPT_NAME",
  62   "SCRIPT_URI",
  63   "SCRIPT_URL",
  64   "SERVER_ADDR",
  65   "SERVER_ADMIN",
  66   "SERVER_NAME",
  67   "SERVER_PORT",
  68   "SERVER_PROTOCOL",
  69   "SERVER_SIGNATURE",
  70   "SERVER_SOFTWARE",
  71   0
  72 };
  73 const int nenvok= sizeof(envok)/sizeof(envok[0]);
  74
  75 int debugmode= 0;
  76
  77 static void outerror(void) {
  78   perror("stdout");
  79   exit(debugmode ? 0 : -1);
  80 }
  81
  82 void syserror(const char *m) {
  83   if (printf("Content-Type: text/plain\n\n"
  84              "ucgi: system call error:\n"
  85              "%s: %s\n",
  86              m,strerror(errno))==EOF || fflush(stdout)) outerror();
  87   exit(0);
  88 }
  89
  90 void error(const char *m) {
  91   if (printf("Content-Type: text/plain\n\n"
  92              "ucgi: error:\n"
  93              "%s\n",
  94              m)==EOF || fflush(stdout)) outerror();
  95   exit(0);
  96 }
  97
  98 void *xmalloc(size_t sz) {
  99   void *r;
 100
 101   r= malloc(sz);
 102   if (!r) syserror("malloc failed");
 103   return r;
 104 }
 105
 106 void *xrealloc(void *ptr, size_t sz) {
 107   void *r;
 108
 109   r= realloc(ptr,sz);
 110   if (!r) syserror("realloc failed");
 111   return r;
 112 }
 113
 114 void xsetenv(const char *en, const char *ev, int overwrite) {
 115   if (setenv(en,ev,overwrite)) syserror("setenv");
 116 }