+++ /dev/null
-/*
- * Usage: as CGI script, but called by userv
- * environment variables are USERV_U_E_...
- */
-/*
- * Copyright 1996-2013,2016 Ian Jackson <ijackson@chiark.greenend.org.uk>
- * Copyright 1998 David Damerell <damerell@chiark.greenend.org.uk>
- * Copyright 1999,2003
- * Chancellor Masters and Scholars of the University of Cambridge
- * Copyright 2010 Tony Finch <fanf@dotat.at>
- * Copyright 2013,2016 Mark Wooding <mdw@distorted.org.uk>
- *
- * This is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with userv-utils; if not, see http://www.gnu.org/licenses/.
- */
-
-#include <stdio.h>
-#include <string.h>
-#include <ctype.h>
-#include <getopt.h>
-#include <unistd.h>
-#include <sys/types.h>
-#include <sys/wait.h>
-#include <sys/stat.h>
-
-#include "ucgi.h"
-
-static const char *const default_envok[]= {
- "AUTH_TYPE",
- "CONTENT_LENGTH",
- "CONTENT_TYPE",
- "DOCUMENT_ROOT",
- "GATEWAY_INTERFACE",
- "HTTP_ACCEPT",
- "HTTP_ACCEPT_CHARSET",
- "HTTP_ACCEPT_ENCODING",
- "HTTP_ACCEPT_LANGUAGE",
- "HTTP_CACHE_CONTROL",
- "HTTP_CONNECTION",
- "HTTP_CONTENT_ENCODING",
- "HTTP_COOKIE",
- "HTTP_DNT",
- "HTTP_HOST",
- "HTTP_KEEP_ALIVE",
- "HTTP_NEGOTIATE",
- "HTTP_PRAGMA",
- "HTTP_REFERER",
- "HTTP_USER_AGENT",
- "HTTP_VIA",
- "HTTP_X_FORWARDED_FOR",
- "HTTPS",
- "PATH_INFO",
- "PATH_TRANSLATED",
- "QUERY_STRING",
- "REDIRECT_HANDLER",
- "REDIRECT_SCRIPT_URI",
- "REDIRECT_SCRIPT_URL",
- "REDIRECT_STATUS",
- "REDIRECT_URL",
- "REMOTE_ADDR",
- "REMOTE_HOST",
- "REMOTE_USER",
- "REMOTE_IDENT",
- "REQUEST_METHOD",
- "REQUEST_URI",
- "SCRIPT_FILENAME",
- "SCRIPT_NAME",
- "SCRIPT_URI",
- "SCRIPT_URL",
- "SERVER_ADDR",
- "SERVER_ADMIN",
- "SERVER_NAME",
- "SERVER_PORT",
- "SERVER_PROTOCOL",
- "SERVER_SIGNATURE",
- "SERVER_SOFTWARE",
- "SSL_CIPHER",
- "SSL_CLIENT_S_DN",
- "SSL_CLIENT_VERIFY",
- "SSL_PROTOCOL",
- 0
-};
-
-static void setenvar(const char *fulln,
- const char *en, const char *ep, void *p) {
- xsetenv(en, ep, 1);
- unsetenv(fulln);
-}
-
-int main(int argc, char **argv) {
- char *scriptpath, *newvar;
- const char *nextslash, *lastslash, *pathi, *ev, *ev2, *scriptdir, *av;
- const char *const *envok;
- const char **arguments;
- size_t scriptdirlen, scriptpathlen, l;
- struct stat stab;
- int i, r, nargs;
- const char *filters= 0;
-
- ev= getenv("USERV_U_DEBUG");
- if (ev && *ev) debugmode= 1;
-
- D( if (debugmode) printf(";;; UCGITARGET\n"); )
- if (argc > MAX_ARGS) error("too many arguments", 500);
-
- for (;;) {
- i= getopt(argc, argv, "+e:"); if (i < 0) break;
- switch (i) {
- case 'e': filters= optarg; break;
- default: error("bad command line", 500); break;
- }
- }
- argc -= optind; argv += optind;
-
- if (!*argv) error("no script directory argument", 500);
- ev= getenv("HOME"); if (!ev) error("no HOME env. var", 500);
- l= strlen(*argv)+strlen(ev);
- newvar= xmalloc(l+2);
- sprintf(newvar,"%s/%s",ev,*argv);
- scriptdir= newvar;
- scriptdirlen= strlen(scriptdir);
-
- if (filters)
- envok= load_filters(LOADF_MUST, filters, LF_END);
- else {
- envok= load_filters(0,
- ".userv/ucgitarget.env-filter",
- "/etc/userv/ucgitarget.env-filter",
- LF_END);
- }
-
- filter_environment(0, "USERV_U_E_", envok, default_envok, setenvar, 0);
-
- scriptpath= 0;
- pathi= getenv("PATH_INFO");
- if (!pathi) error("PATH_INFO not found", 500);
- lastslash= pathi;
- D( if (debugmode) {
- printf(";; find script name...\n"
- ";; PATH_INFO = `%s'\n",
- pathi);
- } )
- for (;;) {
- if (*lastslash != '/') error("PATH_INFO expected slash not found", 400);
- if (lastslash[1]=='.' || lastslash[1]=='#' || !lastslash[1])
- error("bad char begin", 400);
- nextslash= strchr(lastslash+1,'/');
- if (!nextslash) nextslash= lastslash+1+strlen(lastslash+1);
- if (!nextslash) error("insufficient elements in PATH_INFO", 400);
- if (nextslash==lastslash+1) error("empty component in PATH_INFO", 400);
- if (nextslash-pathi > MAX_SCRIPTPATH_LEN)
- error("PATH_INFO script path too long", 400);
- scriptpathlen= scriptdirlen+(nextslash-pathi);
- scriptpath= xrealloc(scriptpath,scriptpathlen+1);
- strcpy(scriptpath,scriptdir);
- memcpy(scriptpath+scriptdirlen,pathi,nextslash-pathi);
- scriptpath[scriptpathlen]= 0;
- if (scriptpath[scriptpathlen-1]=='~') error("bad char end", 400);
- D( if (debugmode) printf(";; try `%s'\n", scriptpath); )
- r= stat(scriptpath,&stab); if (r) syserror("stat script");
- if (S_ISREG(stab.st_mode)) break;
- if (!S_ISDIR(stab.st_mode)) error("script not directory or file", 500);
- lastslash= nextslash;
- }
- D( if (debugmode) printf(";; found script: tail = `%s'\n", nextslash); )
- if (*nextslash) xsetenv("PATH_INFO",nextslash,1);
- else unsetenv("PATH_INFO");
-
- newvar= xmalloc(scriptpathlen+strlen(nextslash)+3);
- sprintf(newvar,"%s%s",scriptpath,nextslash);
- xsetenv("PATH_TRANSLATED",newvar,1);
-
- xsetenv("SCRIPT_FILENAME",scriptpath,1);
-
- ev= getenv("SCRIPT_NAME");
- if (ev) {
- ev2= getenv("USER"); if (!ev2) error("no USER variable", 500);
- newvar= xmalloc(strlen(ev)+2+strlen(ev2)+scriptpathlen-scriptdirlen+2);
- sprintf(newvar,"%s/~%s%s",ev,ev2,scriptpath+scriptdirlen);
- xsetenv("SCRIPT_NAME",newvar,1);
- }
-
- arguments= xmalloc(sizeof(const char*)*(argc+5));
- nargs= 0;
-
- arguments[nargs++]= scriptpath;
- while ((av= (*++argv))) arguments[nargs++]= av;
- arguments[nargs++]= 0;
-
- D( if (debugmode) {
- int i;
-
- printf(";; final environment...\n");
- for (i = 0; environ[i]; i++)
- printf(";; %s\n", environ[i]);
-
- printf(";; final command line...\n");
- for (i = 0; arguments[i]; i++)
- printf(";; %s\n", arguments[i]);
- fflush(stdout);
- } )
-
- execvp(scriptpath,(char*const*)arguments);
- syserror("exec script");
- return -1;
-}
~ian / userv-utils.git / blobdiff