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");