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1 | /* |
2 | * Copyright (c) 1989 The Regents of the University of California. | |
3 | * All rights reserved. | |
4 | * | |
6b8910b8 KB |
5 | * Redistribution and use in source and binary forms are permitted |
6 | * provided that the above copyright notice and this paragraph are | |
7 | * duplicated in all such forms and that any documentation, | |
8 | * advertising materials, and other materials related to such | |
9 | * distribution and use acknowledge that the software was developed | |
10 | * by the University of California, Berkeley. The name of the | |
11 | * University may not be used to endorse or promote products derived | |
12 | * from this software without specific prior written permission. | |
13 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR | |
14 | * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED | |
15 | * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. | |
16 | */ | |
17 | ||
18 | #ifndef lint | |
16c61828 | 19 | static char sccsid[] = "@(#)util.c 5.8 (Berkeley) %G%"; |
6b8910b8 KB |
20 | #endif /* not lint */ |
21 | ||
22 | #include <sys/param.h> | |
23 | #include <sys/stat.h> | |
24 | #include <sys/file.h> | |
25 | #include <stdio.h> | |
26 | #include <ctype.h> | |
27 | #include <strings.h> | |
28 | #include "finger.h" | |
29 | #include "pathnames.h" | |
30 | ||
7619ff47 EW |
31 | find_idle_and_ttywrite(w) |
32 | register WHERE *w; | |
6b8910b8 KB |
33 | { |
34 | extern time_t now; | |
35 | extern int errno; | |
36 | struct stat sb; | |
37 | char *strerror(); | |
38 | ||
7619ff47 | 39 | (void)sprintf(tbuf, "%s/%s", _PATH_DEV, w->tty); |
6b8910b8 KB |
40 | if (stat(tbuf, &sb) < 0) { |
41 | (void)fprintf(stderr, | |
42 | "finger: %s: %s\n", tbuf, strerror(errno)); | |
43 | exit(1); | |
44 | } | |
7619ff47 | 45 | w->idletime = now < sb.st_atime ? 0 : now - sb.st_atime; |
6b8910b8 KB |
46 | |
47 | #define TALKABLE 0220 /* tty is writable if 220 mode */ | |
7619ff47 | 48 | w->writable = ((sb.st_mode & TALKABLE) == TALKABLE); |
6b8910b8 KB |
49 | } |
50 | ||
51 | userinfo(pn, pw) | |
52 | register PERSON *pn; | |
53 | register struct passwd *pw; | |
54 | { | |
55 | register char *p, *t; | |
56 | char name[256]; | |
57 | ||
58 | pn->realname = pn->office = pn->officephone = pn->homephone = NULL; | |
59 | ||
60 | pn->uid = pw->pw_uid; | |
61 | pn->name = strdup(pw->pw_name); | |
62 | pn->dir = strdup(pw->pw_dir); | |
63 | pn->shell = strdup(pw->pw_shell); | |
64 | ||
65 | /* why do we skip asterisks!?!? */ | |
66 | (void)strcpy(p = tbuf, pw->pw_gecos); | |
67 | if (*p == '*') | |
68 | ++p; | |
69 | ||
70 | /* ampersands get replaced by the login name */ | |
71 | if (!(p = strsep(p, ","))) | |
72 | return; | |
73 | for (t = name; *t = *p; ++p) | |
74 | if (*t == '&') { | |
75 | (void)strcpy(t, pw->pw_name); | |
76 | if (islower(*t)) | |
77 | *t = toupper(*t); | |
78 | while (*++t); | |
79 | } | |
80 | else | |
81 | ++t; | |
82 | pn->realname = strdup(name); | |
e2a72b79 KB |
83 | pn->office = ((p = strsep((char *)NULL, ",")) && *p) ? |
84 | strdup(p) : NULL; | |
85 | pn->officephone = ((p = strsep((char *)NULL, ",")) && *p) ? | |
86 | strdup(p) : NULL; | |
87 | pn->homephone = ((p = strsep((char *)NULL, ",")) && *p) ? | |
88 | strdup(p) : NULL; | |
6b8910b8 KB |
89 | } |
90 | ||
91 | match(pw, user) | |
92 | struct passwd *pw; | |
93 | char *user; | |
94 | { | |
95 | register char *p, *t; | |
96 | char name[256]; | |
97 | ||
98 | /* why do we skip asterisks!?!? */ | |
99 | (void)strcpy(p = tbuf, pw->pw_gecos); | |
100 | if (*p == '*') | |
101 | ++p; | |
102 | ||
103 | /* ampersands get replaced by the login name */ | |
104 | if (!(p = strtok(p, ","))) | |
105 | return(0); | |
106 | for (t = name; *t = *p; ++p) | |
107 | if (*t == '&') { | |
108 | (void)strcpy(t, pw->pw_name); | |
109 | while (*++t); | |
110 | } | |
111 | else | |
112 | ++t; | |
113 | for (t = name; p = strtok(t, "\t "); t = (char *)NULL) | |
114 | if (!strcasecmp(p, user)) | |
115 | return(1); | |
116 | return(0); | |
117 | } | |
118 | ||
7619ff47 | 119 | enter_lastlog(pn) |
6b8910b8 KB |
120 | register PERSON *pn; |
121 | { | |
7619ff47 | 122 | register WHERE *w; |
8577119b | 123 | static int opened, fd; |
6b8910b8 | 124 | struct lastlog ll; |
7619ff47 | 125 | char doit = 0; |
6b8910b8 KB |
126 | off_t lseek(); |
127 | ||
9fc6ea8a KB |
128 | /* some systems may not maintain lastlog, don't report errors. */ |
129 | if (!opened) { | |
7619ff47 | 130 | fd = open(_PATH_LASTLOG, O_RDONLY, 0); |
9fc6ea8a | 131 | opened = 1; |
6b8910b8 | 132 | } |
9fc6ea8a KB |
133 | if (fd == -1 || |
134 | lseek(fd, (long)pn->uid * sizeof(ll), L_SET) != | |
135 | (long)pn->uid * sizeof(ll) || | |
136 | read(fd, (char *)&ll, sizeof(ll)) != sizeof(ll)) { | |
137 | /* as if never logged in */ | |
138 | ll.ll_line[0] = ll.ll_host[0] = NULL; | |
139 | ll.ll_time = 0; | |
140 | } | |
7619ff47 EW |
141 | if ((w = pn->whead) == NULL) |
142 | doit = 1; | |
8577119b | 143 | else if (ll.ll_time != 0) { |
7619ff47 EW |
144 | /* if last login is earlier than some current login */ |
145 | for (; !doit && w != NULL; w = w->next) | |
146 | if (w->info == LOGGEDIN && w->loginat < ll.ll_time) | |
147 | doit = 1; | |
148 | /* | |
149 | * and if it's not any of the current logins | |
150 | * can't use time comparison because there may be a small | |
151 | * discrepency since login calls time() twice | |
152 | */ | |
153 | for (w = pn->whead; doit && w != NULL; w = w->next) | |
154 | if (w->info == LOGGEDIN && | |
155 | strncmp(w->tty, ll.ll_line, UT_LINESIZE) == 0) | |
156 | doit = 0; | |
157 | } | |
158 | if (doit) { | |
159 | w = walloc(pn); | |
160 | w->info = LASTLOG; | |
161 | bcopy(ll.ll_line, w->tty, UT_LINESIZE); | |
162 | w->tty[UT_LINESIZE] = 0; | |
163 | bcopy(ll.ll_host, w->host, UT_HOSTSIZE); | |
164 | w->host[UT_HOSTSIZE] = 0; | |
165 | w->loginat = ll.ll_time; | |
6b8910b8 | 166 | } |
6b8910b8 KB |
167 | } |
168 | ||
7619ff47 | 169 | enter_where(ut, pn) |
6b8910b8 KB |
170 | struct utmp *ut; |
171 | PERSON *pn; | |
172 | { | |
7619ff47 EW |
173 | register WHERE *w = walloc(pn); |
174 | ||
175 | w->info = LOGGEDIN; | |
176 | bcopy(ut->ut_line, w->tty, UT_LINESIZE); | |
177 | w->tty[UT_LINESIZE] = 0; | |
178 | bcopy(ut->ut_host, w->host, UT_HOSTSIZE); | |
179 | w->host[UT_HOSTSIZE] = 0; | |
180 | w->loginat = (time_t)ut->ut_time; | |
181 | find_idle_and_ttywrite(w); | |
182 | } | |
183 | ||
184 | PERSON * | |
185 | enter_person(pw) | |
186 | register struct passwd *pw; | |
187 | { | |
188 | register PERSON *pn, **pp; | |
189 | ||
190 | for (pp = htab + hash(pw->pw_name); | |
191 | *pp != NULL && strcmp((*pp)->name, pw->pw_name) != 0; | |
192 | pp = &(*pp)->hlink) | |
193 | ; | |
194 | if ((pn = *pp) == NULL) { | |
195 | pn = palloc(); | |
196 | entries++; | |
197 | if (phead == NULL) | |
198 | phead = ptail = pn; | |
199 | else { | |
200 | ptail->next = pn; | |
201 | ptail = pn; | |
202 | } | |
203 | pn->next = NULL; | |
204 | pn->hlink = NULL; | |
205 | *pp = pn; | |
206 | userinfo(pn, pw); | |
207 | pn->whead = NULL; | |
208 | } | |
209 | return(pn); | |
210 | } | |
211 | ||
212 | PERSON * | |
213 | find_person(name) | |
214 | char *name; | |
215 | { | |
216 | register PERSON *pn; | |
217 | ||
218 | /* name may be only UT_NAMESIZE long and not terminated */ | |
219 | for (pn = htab[hash(name)]; | |
220 | pn != NULL && strncmp(pn->name, name, UT_NAMESIZE) != 0; | |
221 | pn = pn->hlink) | |
222 | ; | |
223 | return(pn); | |
224 | } | |
225 | ||
226 | hash(name) | |
227 | register char *name; | |
228 | { | |
229 | register int h, i; | |
230 | ||
231 | h = 0; | |
232 | /* name may be only UT_NAMESIZE long and not terminated */ | |
233 | for (i = UT_NAMESIZE; --i >= 0 && *name;) | |
234 | h = ((h << 2 | h >> HBITS - 2) ^ *name++) & HMASK; | |
235 | return(h); | |
236 | } | |
237 | ||
238 | PERSON * | |
239 | palloc() | |
240 | { | |
241 | PERSON *p; | |
242 | ||
243 | if ((p = (PERSON *)malloc((u_int) sizeof(PERSON))) == NULL) { | |
244 | (void)fprintf(stderr, "finger: out of space.\n"); | |
245 | exit(1); | |
246 | } | |
247 | return(p); | |
248 | } | |
249 | ||
250 | WHERE * | |
251 | walloc(pn) | |
252 | register PERSON *pn; | |
253 | { | |
254 | register WHERE *w; | |
255 | ||
256 | if ((w = (WHERE *)malloc((u_int) sizeof(WHERE))) == NULL) { | |
257 | (void)fprintf(stderr, "finger: out of space.\n"); | |
258 | exit(1); | |
259 | } | |
260 | if (pn->whead == NULL) | |
261 | pn->whead = pn->wtail = w; | |
262 | else { | |
263 | pn->wtail->next = w; | |
264 | pn->wtail = w; | |
265 | } | |
266 | w->next = NULL; | |
267 | return(w); | |
6b8910b8 | 268 | } |
f156ea40 KB |
269 | |
270 | char * | |
271 | prphone(num) | |
272 | char *num; | |
273 | { | |
274 | register char *p; | |
275 | int len; | |
276 | static char pbuf[15]; | |
277 | ||
278 | /* don't touch anything if the user has their own formatting */ | |
279 | for (p = num; *p; ++p) | |
280 | if (!isdigit(*p)) | |
281 | return(num); | |
282 | len = p - num; | |
283 | p = pbuf; | |
284 | switch(len) { | |
285 | case 11: /* +0-123-456-7890 */ | |
286 | *p++ = '+'; | |
287 | *p++ = *num++; | |
288 | *p++ = '-'; | |
289 | /* FALLTHROUGH */ | |
290 | case 10: /* 012-345-6789 */ | |
291 | *p++ = *num++; | |
292 | *p++ = *num++; | |
293 | *p++ = *num++; | |
294 | *p++ = '-'; | |
295 | /* FALLTHROUGH */ | |
296 | case 7: /* 012-3456 */ | |
297 | *p++ = *num++; | |
298 | *p++ = *num++; | |
299 | *p++ = *num++; | |
300 | break; | |
301 | case 5: /* x0-1234 */ | |
302 | *p++ = 'x'; | |
303 | *p++ = *num++; | |
304 | break; | |
305 | default: | |
306 | return(num); | |
307 | } | |
308 | *p++ = '-'; | |
309 | *p++ = *num++; | |
310 | *p++ = *num++; | |
311 | *p++ = *num++; | |
312 | *p++ = *num++; | |
313 | *p = '\0'; | |
314 | return(pbuf); | |
315 | } |