Commit | Line | Data |
---|---|---|
a9f28345 | 1 | static char *sccsid = "@(#)atrun.c 4.2 (Berkeley) %G%"; |
cf2bca11 BJ |
2 | /* |
3 | * Run programs submitted by at. | |
4 | */ | |
5 | #include <stdio.h> | |
6 | #include <sys/types.h> | |
7 | #include <sys/dir.h> | |
8 | #include <time.h> | |
9 | #include <sys/stat.h> | |
10 | ||
11 | # define DIR "/usr/spool/at" | |
12 | # define PDIR "past" | |
13 | # define LASTF "/usr/spool/at/lasttimedone" | |
14 | ||
15 | int nowtime; | |
16 | int nowdate; | |
17 | int nowyear; | |
18 | ||
19 | main(argc, argv) | |
20 | char **argv; | |
21 | { | |
22 | int tt, day, year, uniq; | |
23 | struct direct dirent; | |
24 | FILE *dirf; | |
25 | char file[DIRSIZ+1]; | |
26 | ||
27 | chdir(DIR); | |
28 | makenowtime(); | |
29 | if ((dirf = fopen(".", "r")) == NULL) { | |
30 | fprintf(stderr, "Cannot read at directory\n"); | |
31 | exit(1); | |
32 | } | |
33 | while (fread((char *)&dirent, sizeof(dirent), 1, dirf) == 1) { | |
34 | if (dirent.d_ino==0) | |
35 | continue; | |
36 | strcpyn(file, dirent.d_name, DIRSIZ); | |
37 | file[DIRSIZ] = '\0'; | |
38 | if (sscanf(file, "%2d.%3d.%4d.%2d", &year, &day, &tt, &uniq) != 4) | |
39 | continue; | |
40 | if (nowyear < year) | |
41 | continue; | |
42 | if (nowyear==year && nowdate < day) | |
43 | continue; | |
44 | if (nowyear==year && nowdate==day && nowtime < tt) | |
45 | continue; | |
46 | run(file); | |
47 | } | |
48 | fclose(dirf); | |
49 | updatetime(nowtime); | |
50 | exit(0); | |
51 | } | |
52 | ||
53 | makenowtime() | |
54 | { | |
55 | long t; | |
56 | struct tm *localtime(); | |
57 | register struct tm *tp; | |
58 | ||
59 | time(&t); | |
60 | tp = localtime(&t); | |
61 | nowtime = tp->tm_hour*100 + tp->tm_min; | |
62 | nowdate = tp->tm_yday; | |
63 | nowyear = tp->tm_year; | |
64 | } | |
65 | ||
66 | updatetime(t) | |
67 | { | |
68 | FILE *tfile; | |
69 | ||
70 | tfile = fopen(LASTF, "w"); | |
71 | if (tfile == NULL) { | |
72 | fprintf(stderr, "can't write lastfile\n"); | |
73 | exit(1); | |
74 | } | |
75 | fprintf(tfile, "%04d\n", t); | |
76 | } | |
77 | ||
78 | run(file) | |
79 | char *file; | |
80 | { | |
81 | struct stat stbuf; | |
82 | register pid, i; | |
83 | char sbuf[64]; | |
84 | ||
85 | /* printf("running %s\n", file); */ | |
86 | if (fork()!=0) | |
87 | return; | |
88 | for (i=0; i<15; i++) | |
89 | close(i); | |
90 | dup(dup(open("/dev/null", 0))); | |
91 | sprintf(sbuf, "%s/%s", PDIR, file); | |
92 | link(file, sbuf); | |
93 | unlink(file); | |
94 | chdir(PDIR); | |
95 | if (stat(file, &stbuf) == -1) | |
96 | exit(1); | |
97 | if (pid = fork()) { | |
98 | if (pid == -1) | |
99 | exit(1); | |
100 | wait((int *)0); | |
101 | unlink(file); | |
102 | exit(0); | |
103 | } | |
104 | setgid(stbuf.st_gid); | |
105 | setuid(stbuf.st_uid); | |
cf2bca11 BJ |
106 | execl("/bin/sh", "sh", file, 0); |
107 | execl("/usr/bin/sh", "sh", file, 0); | |
108 | fprintf(stderr, "Can't execl shell\n"); | |
109 | exit(1); | |
110 | } |