Commit | Line | Data |
---|---|---|
5aaa8f94 BJ |
1 | /* |
2 | * Run programs submitted by at. | |
3 | */ | |
4 | #include <stdio.h> | |
5 | #include <sys/types.h> | |
6 | #include <sys/dir.h> | |
7 | #include <time.h> | |
8 | #include <sys/stat.h> | |
9 | ||
10 | # define DIR "/usr/spool/at" | |
11 | # define PDIR "past" | |
12 | # define LASTF "/usr/spool/at/lasttimedone" | |
13 | ||
14 | int nowtime; | |
15 | int nowdate; | |
16 | int nowyear; | |
17 | ||
18 | main(argc, argv) | |
19 | char **argv; | |
20 | { | |
21 | int tt, day, year, uniq; | |
22 | struct direct dirent; | |
23 | FILE *dirf; | |
24 | ||
25 | setuid(0); | |
26 | setgid(0); | |
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 | if (sscanf(dirent.d_name, "%2d.%3d.%4d.%2d", &year, &day, &tt, &uniq) != 4) | |
37 | continue; | |
38 | if (nowyear < year) | |
39 | continue; | |
40 | if (nowyear==year && nowdate < day) | |
41 | continue; | |
42 | if (nowyear==year && nowdate==day && nowtime < tt) | |
43 | continue; | |
44 | run(dirent.d_name); | |
45 | } | |
46 | fclose(dirf); | |
47 | updatetime(nowtime); | |
48 | exit(0); | |
49 | } | |
50 | ||
51 | makenowtime() | |
52 | { | |
53 | long t; | |
54 | struct tm *localtime(); | |
55 | register struct tm *tp; | |
56 | ||
57 | time(&t); | |
58 | tp = localtime(&t); | |
59 | nowtime = tp->tm_hour*100 + tp->tm_min; | |
60 | nowdate = tp->tm_yday; | |
61 | nowyear = tp->tm_year; | |
62 | } | |
63 | ||
64 | updatetime(t) | |
65 | { | |
66 | FILE *tfile; | |
67 | ||
68 | tfile = fopen(LASTF, "w"); | |
69 | if (tfile == NULL) { | |
70 | fprintf(stderr, "can't write lastfile\n"); | |
71 | exit(1); | |
72 | } | |
73 | fprintf(tfile, "%04d\n", t); | |
74 | } | |
75 | ||
76 | run(file) | |
77 | char *file; | |
78 | { | |
79 | struct stat stbuf; | |
80 | register pid, i; | |
81 | char sbuf[64]; | |
82 | ||
83 | /* printf("running %s\n", file); */ | |
84 | if (fork()!=0) | |
85 | return; | |
86 | for (i=0; i<15; i++) | |
87 | close(i); | |
88 | dup(dup(open("/dev/null", 0))); | |
89 | sprintf(sbuf, "/bin/mv %.14s %s", file, PDIR); | |
90 | system(sbuf); | |
91 | chdir(PDIR); | |
92 | if (stat(file, &stbuf) == -1) | |
93 | exit(1); | |
94 | if (pid = fork()) { | |
95 | if (pid == -1) | |
96 | exit(1); | |
97 | wait((int *)0); | |
98 | unlink(file); | |
99 | exit(0); | |
100 | } | |
101 | setgid(stbuf.st_gid); | |
102 | setuid(stbuf.st_uid); | |
103 | nice(3); | |
104 | execl("/bin/sh", "sh", file, 0); | |
105 | execl("/usr/bin/sh", "sh", file, 0); | |
106 | fprintf(stderr, "Can't execl shell\n"); | |
107 | exit(1); | |
108 | } |