2 * Usage: as CGI script, but called by userv
3 * environment variables are USERV_U_E_...
6 * Copyright (C) 1998-1999,2003 Ian Jackson
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 2 of the License, or
11 * (at your option) any later version.
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.
18 * You should have received a copy of the GNU General Public License
19 * along with userv-utils; if not, write to the Free Software
20 * Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
29 #include <sys/types.h>
35 static void setenvar(const char *fulln
,
36 const char *en
, const char *ep
, void *p
) {
41 int main(int argc
, const char **argv
) {
42 char *scriptpath
, *newvar
;
43 const char *nextslash
, *lastslash
, *pathi
, *ev
, *ev2
, *scriptdir
, *av
;
44 const char **arguments
;
45 size_t scriptdirlen
, scriptpathlen
, l
;
49 ev
= getenv("USERV_U_DEBUG");
50 if (ev
&& *ev
) debugmode
= 1;
52 D( if (debugmode
) printf(";;; UCGITARGET\n"); )
53 if (argc
> MAX_ARGS
) error("too many arguments");
55 if (!*++argv
) error("no script directory argument");
56 ev
= getenv("HOME"); if (!ev
) error("no HOME env. var");
57 l
= strlen(*argv
)+strlen(ev
);
59 sprintf(newvar
,"%s/%s",ev
,*argv
);
61 scriptdirlen
= strlen(scriptdir
);
63 filter_environment(0, "USERV_U_E_", envok
, setenvar
, 0);
66 pathi
= getenv("PATH_INFO");
67 if (!pathi
) error("PATH_INFO not found");
70 printf(";; find script name...\n"
71 ";; PATH_INFO = `%s'\n",
75 if (*lastslash
!= '/') error("PATH_INFO expected slash not found");
76 if (lastslash
[1]=='.' || lastslash
[1]=='#' || !lastslash
[1]) error("bad char begin");
77 nextslash
= strchr(lastslash
+1,'/');
78 if (!nextslash
) nextslash
= lastslash
+1+strlen(lastslash
+1);
79 if (!nextslash
) error("insufficient elements in PATH_INFO");
80 if (nextslash
==lastslash
+1) error("empty component in PATH_INFO");
81 if (nextslash
-pathi
> MAX_SCRIPTPATH_LEN
) error("PATH_INFO script path too long");
82 scriptpathlen
= scriptdirlen
+(nextslash
-pathi
);
83 scriptpath
= xrealloc(scriptpath
,scriptpathlen
+1);
84 strcpy(scriptpath
,scriptdir
);
85 memcpy(scriptpath
+scriptdirlen
,pathi
,nextslash
-pathi
);
86 scriptpath
[scriptpathlen
]= 0;
87 if (scriptpath
[scriptpathlen
-1]=='~') error("bad char end");
88 D( if (debugmode
) printf(";; try `%s'\n", scriptpath
); )
89 r
= stat(scriptpath
,&stab
); if (r
) syserror("stat script");
90 if (S_ISREG(stab
.st_mode
)) break;
91 if (!S_ISDIR(stab
.st_mode
)) error("script not directory or file");
94 D( if (debugmode
) printf(";; found script: tail = `%s'\n", nextslash
); )
95 if (*nextslash
) xsetenv("PATH_INFO",nextslash
,1);
96 else unsetenv("PATH_INFO");
98 newvar
= xmalloc(scriptpathlen
+strlen(nextslash
)+3);
99 sprintf(newvar
,"%s%s",scriptpath
,nextslash
);
100 xsetenv("PATH_TRANSLATED",newvar
,1);
102 xsetenv("SCRIPT_FILENAME",scriptpath
,1);
104 ev
= getenv("SCRIPT_NAME");
106 ev2
= getenv("USER"); if (!ev2
) error("no USER variable");
107 newvar
= xmalloc(strlen(ev
)+2+strlen(ev2
)+scriptpathlen
-scriptdirlen
+2);
108 sprintf(newvar
,"%s/~%s%s",ev
,ev2
,scriptpath
+scriptdirlen
);
109 xsetenv("SCRIPT_NAME",newvar
,1);
112 arguments
= xmalloc(sizeof(const char*)*(argc
+5));
115 arguments
[nargs
++]= scriptpath
;
116 while ((av
= (*++argv
))) arguments
[nargs
++]= av
;
117 arguments
[nargs
++]= 0;
122 printf(";; final environment...\n");
123 for (i
= 0; environ
[i
]; i
++)
124 printf(";; %s\n", environ
[i
]);
126 printf(";; final command line...\n");
127 for (i
= 0; arguments
[i
]; i
++)
128 printf(";; %s\n", arguments
[i
]);
132 execvp(scriptpath
,(char*const*)arguments
);
133 syserror("exec script");