1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
|
/* $Id: ext_hook.c,v 1.1 2002/09/09 14:30:16 jon Exp $
*
* Run a program that hooks into some other system. The first argument is
* name of the hook to use, the second is the full path name of a mail message.
* The third argument is also the full path name of a mail message, or a NULL
* pointer if it isn't needed. Look in the context for an error message if
* something goes wrong; there is a built-in message in case one isn't specified.
* Only produce the error message once.
*/
#include <h/mh.h>
int
ext_hook(char *hook_name, char *message_file_name_1, char *message_file_name_2)
{
char *hook; /* hook program from context */
pid_t pid; /* ID of child process */
int status; /* exit or other child process status */
char *vec[4]; /* argument vector for child process */
static int did_message = 0; /* set if we've already output a message */
if ((hook = context_find(hook_name)) == (char *)0)
return (OK);
switch (pid = vfork()) {
case -1:
status = NOTOK;
advise(NULL, "external database may be out-of-date.");
break;
case 0:
vec[0] = r1bindex(hook, '/');
vec[1] = message_file_name_1;
vec[2] = message_file_name_2;
vec[3] = (char *)0;
execvp(hook, vec);
_exit(-1);
/* NOTREACHED */
default:
status = pidwait(pid, -1);
break;
}
if (status != OK) {
if (did_message == 0) {
if ((hook = context_find("msg-hook")) != (char *)0)
advise(NULL, hook);
else
advise(NULL, "external hook (%s) did not work properly.", hook);
did_message = 1;
}
return (NOTOK);
}
else
return (OK);
}
|
