projects / unix-history / blame
| Commit | Line | Data |
|---|---|---|
| 2b2bf619 BJ |
1 | #ifndef lint |
| 2 | static char sccsid[] = "@(#)rwho.c 4.1 82/04/02"; | |
| 3 | #endif | |
| 4 | ||
| 5 | #include <sys/types.h> /* botch in ndir.h */ | |
| 6 | #include <stdio.h> | |
| 7 | #include <ndir.h> | |
| 8 | #include <utmp.h> | |
| 9 | #include "rwhod.h" | |
| 10 | ||
| 11 | DIR *etc; | |
| 12 | ||
| 13 | struct whod wd; | |
| 14 | int utmpcmp(); | |
| 15 | #define NUSERS 1000 | |
| 16 | struct myutmp { | |
| 17 | char myhost[32]; | |
| 18 | int myidle; | |
| 19 | struct utmp myutmp; | |
| 20 | } myutmp[NUSERS]; | |
| 21 | int nusers; | |
| 22 | ||
| 23 | #define WHDRSIZE (sizeof (wd) - sizeof (wd.wd_we)) | |
| 24 | ||
| 25 | char *ctime(), *strcpy(); | |
| 26 | int now; | |
| 27 | int aflg; | |
| 28 | ||
| 29 | main(argc, argv) | |
| 30 | int argc; | |
| 31 | char **argv; | |
| 32 | { | |
| 33 | struct direct *dp; | |
| 34 | int cc, width; | |
| 35 | register struct whod *w = &wd; | |
| 36 | register struct whoent *we; | |
| 37 | register struct myutmp *mp; | |
| 38 | int f, n, i; | |
| 39 | ||
| 40 | argc--, argv++; | |
| 41 | again: | |
| 42 | if (argc > 0 && !strcmp(argv[0], "-a")) { | |
| 43 | argc--, argv++; | |
| 44 | aflg++; | |
| 45 | goto again; | |
| 46 | } | |
| 47 | (void) time(&now); | |
| 48 | if (chdir("/etc") < 0) { | |
| 49 | perror("/etc"); | |
| 50 | exit(1); | |
| 51 | } | |
| 52 | etc = opendir("."); | |
| 53 | if (etc == NULL) { | |
| 54 | perror("/etc"); | |
| 55 | exit(1); | |
| 56 | } | |
| 57 | mp = myutmp; | |
| 58 | while (dp = readdir(etc)) { | |
| 59 | if (dp->d_ino == 0) | |
| 60 | continue; | |
| 61 | if (strncmp(dp->d_name, "whod.", 5)) | |
| 62 | continue; | |
| 63 | f = open(dp->d_name, 0); | |
| 64 | if (f < 0) | |
| 65 | continue; | |
| 66 | cc = read(f, (char *)&wd, sizeof (struct whod)); | |
| 67 | if (cc < WHDRSIZE) { | |
| 68 | (void) close(f); | |
| 69 | continue; | |
| 70 | } | |
| 71 | if (now - w->wd_recvtime > 5 * 60) { | |
| 72 | (void) close(f); | |
| 73 | continue; | |
| 74 | } | |
| 75 | cc -= WHDRSIZE; | |
| 76 | we = w->wd_we; | |
| 77 | for (n = cc / sizeof (struct whoent); n > 0; n--) { | |
| 78 | if (aflg == 0 && we->we_idle >= 60*60) { | |
| 79 | we++; | |
| 80 | continue; | |
| 81 | } | |
| 82 | if (nusers >= NUSERS) { | |
| 83 | printf("too many users\n"); | |
| 84 | exit(1); | |
| 85 | } | |
| 86 | mp->myutmp = we->we_utmp; mp->myidle = we->we_idle; | |
| 87 | (void) strcpy(mp->myhost, w->wd_hostname); | |
| 88 | nusers++; we++; mp++; | |
| 89 | } | |
| 90 | (void) close(f); | |
| 91 | } | |
| 92 | qsort((char *)myutmp, nusers, sizeof (struct myutmp), utmpcmp); | |
| 93 | mp = myutmp; | |
| 94 | width = 0; | |
| 95 | for (i = 0; i < nusers; i++) { | |
| 96 | int j = strlen(mp->myhost) + 1 + strlen(mp->myutmp.ut_line); | |
| 97 | if (j > width) | |
| 98 | width = j; | |
| 99 | mp++; | |
| 100 | } | |
| 101 | mp = myutmp; | |
| 102 | for (i = 0; i < nusers; i++) { | |
| 103 | char buf[22]; | |
| 104 | sprintf(buf, "%s:%s", mp->myhost, mp->myutmp.ut_line); | |
| 105 | printf("%-8.8s %-*s %.12s", | |
| 106 | mp->myutmp.ut_name, | |
| 107 | width, | |
| 108 | buf, | |
| 109 | ctime((time_t *)&mp->myutmp.ut_time)+4); | |
| 110 | mp->myidle /= 60; | |
| 111 | if (mp->myidle) { | |
| 112 | if (aflg) { | |
| 113 | if (mp->myidle >= 100*60) | |
| 114 | mp->myidle = 100*60 - 1; | |
| 115 | if (mp->myidle >= 60) | |
| 116 | printf(" %2d", mp->myidle / 60); | |
| 117 | else | |
| 118 | printf(" "); | |
| 119 | } else | |
| 120 | printf(" "); | |
| 121 | printf(":%02d", mp->myidle % 60); | |
| 122 | } | |
| 123 | printf("\n"); | |
| 124 | mp++; | |
| 125 | } | |
| 126 | exit(0); | |
| 127 | } | |
| 128 | ||
| 129 | utmpcmp(u1, u2) | |
| 130 | struct myutmp *u1, *u2; | |
| 131 | { | |
| 132 | int rc; | |
| 133 | ||
| 134 | rc = strncmp(u1->myutmp.ut_name, u2->myutmp.ut_name, 8); | |
| 135 | if (rc) | |
| 136 | return (rc); | |
| 137 | rc = strncmp(u1->myhost, u2->myhost, 8); | |
| 138 | if (rc) | |
| 139 | return (rc); | |
| 140 | return (strncmp(u1->myutmp.ut_line, u2->myutmp.ut_line, 8)); | |
| 141 | } |