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

   1 /*
   2  * Copyright 1996-2013 Ian Jackson <ijackson@chiark.greenend.org.uk>
   3  * Copyright 1998 David Damerell <damerell@chiark.greenend.org.uk>
   4  * Copyright 1999,2003
   5  *    Chancellor Masters and Scholars of the University of Cambridge
   6  * Copyright 2010 Tony Finch <fanf@dotat.at>
   7  *
   8  * This is free software; you can redistribute it and/or modify it
   9  * under the terms of the GNU General Public License as published by
  10  * the Free Software Foundation; either version 3 of the License, or
  11  * (at your option) any later version.
  12  *
  13  * This program is distributed in the hope that it will be useful, but
  14  * WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  16  * General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * along with userv-utils; if not, see http://www.gnu.org/licenses/.
  20  */
  21
  22 #include <stdio.h>
  23 #include <string.h>
  24 #include <errno.h>
  25
  26 #include "ucgi.h"
  27
  28 const char *const envok[]= {
  29   "AUTH_TYPE",
  30   "CONTENT_LENGTH",
  31   "CONTENT_TYPE",
  32   "DOCUMENT_ROOT",
  33   "GATEWAY_INTERFACE",
  34   "HTTP_ACCEPT",
  35   "HTTP_ACCEPT_CHARSET",
  36   "HTTP_ACCEPT_ENCODING",
  37   "HTTP_ACCEPT_LANGUAGE",
  38   "HTTP_CACHE_CONTROL",
  39   "HTTP_CONNECTION",
  40   "HTTP_CONTENT_ENCODING",
  41   "HTTP_COOKIE",
  42   "HTTP_DNT",
  43   "HTTP_HOST",
  44   "HTTP_KEEP_ALIVE",
  45   "HTTP_NEGOTIATE",
  46   "HTTP_PRAGMA",
  47   "HTTP_REFERER",
  48   "HTTP_USER_AGENT",
  49   "HTTP_VIA",
  50   "HTTP_X_FORWARDED_FOR",
  51   "HTTPS",
  52   "PATH_INFO",
  53   "PATH_TRANSLATED",
  54   "QUERY_STRING",
  55   "REMOTE_ADDR",
  56   "REMOTE_HOST",
  57   "REMOTE_USER",
  58   "REMOTE_IDENT",
  59   "REQUEST_METHOD",
  60   "REQUEST_URI",
  61   "SCRIPT_FILENAME",
  62   "SCRIPT_NAME",
  63   "SCRIPT_URI",
  64   "SCRIPT_URL",
  65   "SERVER_ADDR",
  66   "SERVER_ADMIN",
  67   "SERVER_NAME",
  68   "SERVER_PORT",
  69   "SERVER_PROTOCOL",
  70   "SERVER_SIGNATURE",
  71   "SERVER_SOFTWARE",
  72   0
  73 };
  74 const int nenvok= sizeof(envok)/sizeof(envok[0]);
  75
  76 int debugmode= 0;
  77
  78 static void outerror(void) {
  79   perror("stdout");
  80   exit(debugmode ? 0 : -1);
  81 }
  82
  83 void syserror(const char *m) {
  84   if (printf("Content-Type: text/plain\n\n"
  85              "ucgi: system call error:\n"
  86              "%s: %s\n",
  87              m,strerror(errno))==EOF || fflush(stdout)) outerror();
  88   exit(0);
  89 }
  90
  91 void error(const char *m) {
  92   if (printf("Content-Type: text/plain\n\n"
  93              "ucgi: error:\n"
  94              "%s\n",
  95              m)==EOF || fflush(stdout)) outerror();
  96   exit(0);
  97 }
  98
  99 void *xmalloc(size_t sz) {
 100   void *r;
 101
 102   r= malloc(sz);
 103   if (!r) syserror("malloc failed");
 104   return r;
 105 }
 106
 107 void xsetenv(const char *en, const char *ev, int overwrite) {
 108   if (setenv(en,ev,overwrite)) syserror("setenv");
 109 }