5 * Copyright (C) 1998-1999,2003 Ian Jackson
7 * This is free software; you can redistribute it and/or modify it
8 * under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
12 * This program is distributed in the hope that it will be useful, but
13 * WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with userv-utils; if not, write to the Free Software
19 * Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
28 #include <sys/types.h>
33 static const char *const default_envok[] = {
59 static void addarg(struct buildargs *args, const char *a) {
60 if (args->n > args->max) error("too many arguments", 500);
61 args->v[args->n++]= a;
64 static void add_userv_var(const char *fulln,
65 const char *en, const char *ev, void *p) {
66 struct buildargs *args= p;
71 if (l > MAX_ENVVAR_VALUE) error("environment variable too long", 500);
72 a= xmalloc(strlen(en)+l+6);
73 sprintf(a,"-DE_%s=%s",en,ev);
77 int main(int argc, const char **argv) {
79 const char *slash2, *pathi, *ev, *av;
80 const char *const *envok = 0;
81 size_t usernamelen, l;
82 struct buildargs args;
87 if (l>6 && !strcmp(argv[0]+l-6,"-debug")) debugmode= 1;
90 if (fputs("Content-Type: text/plain\n\n",stdout)==EOF || fflush(stdout))
91 syserror("write stdout");
92 if (dup2(1,2)<0) { perror("dup stdout to stderr"); exit(-1); }
93 D( printf(";;; UCGI\n"); )
96 if (argc > MAX_ARGS) error("too many arguments", 500);
98 ev= getenv("UCGI_ENV_FILTER");
100 envok= load_filters(LOADF_MUST, ev, LF_END);
102 envok= load_filters(0, "/etc/userv/ucgi.env-filter", LF_END);
104 pathi= getenv("PATH_INFO");
105 if (!pathi) error("PATH_INFO not found", 500);
107 printf(";; find user name...\n"
108 ";; initial PATH_INFO = `%s'\n",
111 if (pathi[0] != '/' || pathi[1] != '~')
112 error("PATH_INFO must start with /~", 400);
113 slash2= strchr(pathi+2,'/');
114 if (!slash2) error("PATH_INFO must have more than one /", 400);
115 usernamelen= slash2-(pathi+2);
116 if (usernamelen > MAX_USERNAME_LEN) error("PATH_INFO username too long", 400);
117 username= xmalloc(usernamelen+1);
118 memcpy(username,pathi+2,usernamelen); username[usernamelen]= 0;
120 printf(";; user = `%s'; tail = `%s'\n", username, slash2); )
121 if (!isalpha(username[0]))
122 error("username 1st character is not alphabetic", 400);
123 xsetenv("PATH_INFO",slash2,1);
125 args.n= 0; args.max= argc + MAX_ENVVARS + 10;
126 args.v= xmalloc(args.max * sizeof(*args.v));
128 addarg(&args, "userv");
129 if (debugmode) addarg(&args, "-DDEBUG=1");
131 filter_environment(FILTF_WILDCARD, "", envok, default_envok,
132 add_userv_var, &args);
134 addarg(&args, username);
135 addarg(&args, "www-cgi");
136 while ((av= (*++argv))) addarg(&args, av);
141 child= fork(); if (child==-1) syserror("fork");
143 rchild= waitpid(child,&status,0);
144 if (rchild==-1) syserror("waitpid");
145 printf("\nexit status %d %d\n",(status>>8)&0x0ff,status&0x0ff);
153 printf(";; final command line...\n");
154 for (i = 0; args.v[i]; i++)
155 printf(";; %s\n", args.v[i]);
159 execvp("userv",(char*const*)args.v);
160 syserror("exec userv");