Commit | Line | Data |
---|---|---|
d78f3cba | 1 | #ifndef lint |
46b15d8a | 2 | static char sccsid[] = "@(#)shio.c 5.2 (Berkeley) %G%"; |
d78f3cba SL |
3 | #endif |
4 | ||
5 | #include "uucp.h" | |
6 | #include <signal.h> | |
7 | ||
d78f3cba SL |
8 | /******* |
9 | * shio(cmd, fi, fo, user) execute shell of command with | |
10 | * char *cmd, *fi, *fo; fi and fo as standard input/output | |
11 | * char *user; user name | |
12 | * | |
13 | * return codes: | |
14 | * 0 - ok | |
15 | * non zero - failed - status from child | |
16 | */ | |
17 | ||
18 | shio(cmd, fi, fo, user) | |
19 | char *cmd, *fi, *fo, *user; | |
20 | { | |
21 | int status, f; | |
22 | int uid, pid, ret; | |
23 | char path[MAXFULLNAME]; | |
46b15d8a | 24 | extern int errno; |
d78f3cba SL |
25 | |
26 | if (fi == NULL) | |
46b15d8a | 27 | fi = DEVNULL; |
d78f3cba | 28 | if (fo == NULL) |
46b15d8a | 29 | fo = DEVNULL; |
d78f3cba SL |
30 | |
31 | DEBUG(3, "shio - %s\n", cmd); | |
46b15d8a RC |
32 | #ifdef SIGCHLD |
33 | signal(SIGCHLD, SIG_IGN); | |
34 | #endif SIGCHLD | |
d78f3cba SL |
35 | if ((pid = fork()) == 0) { |
36 | signal(SIGINT, SIG_IGN); | |
37 | signal(SIGHUP, SIG_IGN); | |
38 | signal(SIGQUIT, SIG_IGN); | |
39 | signal(SIGKILL, SIG_IGN); | |
40 | close(Ifn); | |
41 | close(Ofn); | |
42 | close(0); | |
46b15d8a RC |
43 | if (user == NULL || (gninfo(user, &uid, path) != 0) |
44 | || setuid(uid)) | |
d78f3cba SL |
45 | setuid(getuid()); |
46 | f = open(subfile(fi), 0); | |
46b15d8a RC |
47 | if (f != 0) { |
48 | logent(fi, "CAN'T READ"); | |
49 | exit(-errno); | |
50 | } | |
d78f3cba SL |
51 | close(1); |
52 | f = creat(subfile(fo), 0666); | |
46b15d8a RC |
53 | if (f != 1) { |
54 | logent(fo, "CAN'T WRITE"); | |
55 | exit(-errno); | |
56 | } | |
d78f3cba | 57 | execl(SHELL, "sh", "-c", cmd, (char *)0); |
46b15d8a | 58 | exit(100+errno); |
d78f3cba | 59 | } |
46b15d8a RC |
60 | while ((ret = wait(&status)) != pid && ret != -1) |
61 | ; | |
d78f3cba | 62 | DEBUG(3, "status %d\n", status); |
46b15d8a | 63 | return status; |
d78f3cba | 64 | } |