Commit | Line | Data |
---|---|---|
e804469b | 1 | static char *sccsid = "@(#)atrun.c 4.3 (Berkeley) 10/21/82"; |
cf2bca11 BJ |
2 | /* |
3 | * Run programs submitted by at. | |
4 | */ | |
5 | #include <stdio.h> | |
a478b3a3 | 6 | #include <sys/param.h> |
cf2bca11 BJ |
7 | #include <sys/dir.h> |
8 | #include <time.h> | |
9 | #include <sys/stat.h> | |
10 | ||
a478b3a3 | 11 | # define ATDIR "/usr/spool/at" |
cf2bca11 BJ |
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; | |
a478b3a3 KM |
23 | struct direct *dirent; |
24 | DIR *dirp; | |
cf2bca11 | 25 | |
a478b3a3 | 26 | chdir(ATDIR); |
cf2bca11 | 27 | makenowtime(); |
a478b3a3 | 28 | if ((dirp = opendir(".")) == NULL) { |
cf2bca11 BJ |
29 | fprintf(stderr, "Cannot read at directory\n"); |
30 | exit(1); | |
31 | } | |
a478b3a3 KM |
32 | while ((dirent = readdir(dirp)) != NULL) { |
33 | if (dirent->d_ino==0) | |
cf2bca11 | 34 | continue; |
a478b3a3 | 35 | if (sscanf(dirent->d_name, "%2d.%3d.%4d.%2d", &year, &day, &tt, &uniq) != 4) |
cf2bca11 BJ |
36 | continue; |
37 | if (nowyear < year) | |
38 | continue; | |
39 | if (nowyear==year && nowdate < day) | |
40 | continue; | |
41 | if (nowyear==year && nowdate==day && nowtime < tt) | |
42 | continue; | |
a478b3a3 | 43 | run(dirent->d_name); |
cf2bca11 | 44 | } |
a478b3a3 | 45 | closedir(dirp); |
cf2bca11 BJ |
46 | updatetime(nowtime); |
47 | exit(0); | |
48 | } | |
49 | ||
50 | makenowtime() | |
51 | { | |
52 | long t; | |
53 | struct tm *localtime(); | |
54 | register struct tm *tp; | |
55 | ||
56 | time(&t); | |
57 | tp = localtime(&t); | |
58 | nowtime = tp->tm_hour*100 + tp->tm_min; | |
59 | nowdate = tp->tm_yday; | |
60 | nowyear = tp->tm_year; | |
61 | } | |
62 | ||
63 | updatetime(t) | |
64 | { | |
65 | FILE *tfile; | |
66 | ||
67 | tfile = fopen(LASTF, "w"); | |
68 | if (tfile == NULL) { | |
69 | fprintf(stderr, "can't write lastfile\n"); | |
70 | exit(1); | |
71 | } | |
72 | fprintf(tfile, "%04d\n", t); | |
73 | } | |
74 | ||
75 | run(file) | |
76 | char *file; | |
77 | { | |
78 | struct stat stbuf; | |
79 | register pid, i; | |
80 | char sbuf[64]; | |
81 | ||
82 | /* printf("running %s\n", file); */ | |
83 | if (fork()!=0) | |
84 | return; | |
85 | for (i=0; i<15; i++) | |
86 | close(i); | |
87 | dup(dup(open("/dev/null", 0))); | |
88 | sprintf(sbuf, "%s/%s", PDIR, file); | |
89 | link(file, sbuf); | |
90 | unlink(file); | |
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); | |
cf2bca11 BJ |
103 | execl("/bin/sh", "sh", file, 0); |
104 | execl("/usr/bin/sh", "sh", file, 0); | |
105 | fprintf(stderr, "Can't execl shell\n"); | |
106 | exit(1); | |
107 | } |