X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ian/git?a=blobdiff_plain;f=www-cgi%2Fucgi.c;fp=www-cgi%2Fucgi.c;h=0000000000000000000000000000000000000000;hb=5e217877d0d85c56c881da5c8a11fd253c11fe0a;hp=fc9888b0637529e37696e80fa01f8ffe52b534b4;hpb=186ea161e7d144dd8e3791f174a7173e2f399346;p=userv-utils.git diff --git a/www-cgi/ucgi.c b/www-cgi/ucgi.c deleted file mode 100644 index fc9888b..0000000 --- a/www-cgi/ucgi.c +++ /dev/null @@ -1,164 +0,0 @@ -/* - * Usage: as CGI script - */ -/* - * Copyright 1996-2013,2016 Ian Jackson - * Copyright 1998 David Damerell - * Copyright 1999,2003 - * Chancellor Masters and Scholars of the University of Cambridge - * Copyright 2010 Tony Finch - * Copyright 2013,2016 Mark Wooding - * - * 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 -#include -#include -#include -#include -#include - -#include "ucgi.h" - -static const char *const default_envok[] = { - "AUTH_TYPE", - "CONTENT_TYPE", - "CONTENT_LENGTH", - "DOCUMENT_ROOT", - "GATEWAY_INTERFACE", - "HTTP_*", - "HTTPS", - "PATH_INFO", - "PATH_TRANSLATED", - "QUERY_STRING", - "REDIRECT_*", - "REMOTE_*", - "REQUEST_METHOD", - "REQUEST_URI", - "SCRIPT_*", - "SERVER_*", - "SSL_*", - 0 -}; - -struct buildargs { - const char **v; - int n, max; -}; - -static void addarg(struct buildargs *args, const char *a) { - if (args->n > args->max) error("too many arguments", 500); - args->v[args->n++]= a; -} - -static void add_userv_var(const char *fulln, - const char *en, const char *ev, void *p) { - struct buildargs *args= p; - size_t l; - char *a; - - l= strlen(ev); - if (l > MAX_ENVVAR_VALUE) error("environment variable too long", 500); - a= xmalloc(strlen(en)+l+6); - sprintf(a,"-DE_%s=%s",en,ev); - addarg(args, a); -} - -int main(int argc, const char **argv) { - char *username; - const char *slash2, *pathi, *ev, *av; - const char *const *envok = 0; - size_t usernamelen, l; - struct buildargs args; - pid_t child, rchild; - int status; - - l= strlen(argv[0]); - if (l>6 && !strcmp(argv[0]+l-6,"-debug")) debugmode= 1; - - if (debugmode) { - if (fputs("Content-Type: text/plain\n\n",stdout)==EOF || fflush(stdout)) - syserror("write stdout"); - if (dup2(1,2)<0) { perror("dup stdout to stderr"); exit(-1); } - D( printf(";;; UCGI\n"); ) - } - - if (argc > MAX_ARGS) error("too many arguments", 500); - - ev= getenv("UCGI_ENV_FILTER"); - if (ev) - envok= load_filters(LOADF_MUST, ev, LF_END); - else - envok= load_filters(0, "/etc/userv/ucgi.env-filter", LF_END); - - pathi= getenv("PATH_INFO"); - if (!pathi) error("PATH_INFO not found", 500); - D( if (debugmode) { - printf(";; find user name...\n" - ";; initial PATH_INFO = `%s'\n", - pathi); - } ) - if (pathi[0] != '/' || pathi[1] != '~') - error("PATH_INFO must start with /~", 400); - slash2= strchr(pathi+2,'/'); - if (!slash2) error("PATH_INFO must have more than one /", 400); - usernamelen= slash2-(pathi+2); - if (usernamelen > MAX_USERNAME_LEN) error("PATH_INFO username too long", 400); - username= xmalloc(usernamelen+1); - memcpy(username,pathi+2,usernamelen); username[usernamelen]= 0; - D( if (debugmode) - printf(";; user = `%s'; tail = `%s'\n", username, slash2); ) - if (!isalpha(username[0])) - error("username 1st character is not alphabetic", 400); - xsetenv("PATH_INFO",slash2,1); - - args.n= 0; args.max= argc + MAX_ENVVARS + 10; - args.v= xmalloc(args.max * sizeof(*args.v)); - - addarg(&args, "userv"); - if (debugmode) addarg(&args, "-DDEBUG=1"); - - filter_environment(FILTF_WILDCARD, "", envok, default_envok, - add_userv_var, &args); - - addarg(&args, username); - addarg(&args, "www-cgi"); - while ((av= (*++argv))) addarg(&args, av); - addarg(&args, 0); - - if (debugmode) { - D( fflush(stdout); ) - child= fork(); if (child==-1) syserror("fork"); - if (child) { - rchild= waitpid(child,&status,0); - if (rchild==-1) syserror("waitpid"); - printf("\nexit status %d %d\n",(status>>8)&0x0ff,status&0x0ff); - exit(0); - } - } - - D( if (debugmode) { - int i; - - printf(";; final command line...\n"); - for (i = 0; args.v[i]; i++) - printf(";; %s\n", args.v[i]); - fflush(stdout); - } ) - - execvp("userv",(char*const*)args.v); - syserror("exec userv"); - return -1; -}