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Comparing rxvt-unicode/src/logging.C (file contents):
Revision 1.37 by root, Sun Jan 22 01:00:46 2006 UTC vs.
Revision 1.46 by root, Mon May 5 16:51:52 2008 UTC

… …
16 * Copyright (c) 1998-2001 Geoff Wing <gcw@pobox.com> 16 * Copyright (c) 1998-2001 Geoff Wing <gcw@pobox.com>
17 * - extensive modifications 17 * - extensive modifications
18 * Copyright (c) 1999 D J Hawkey Jr <hawkeyd@visi.com> 18 * Copyright (c) 1999 D J Hawkey Jr <hawkeyd@visi.com>
19 * - lastlog support 19 * - lastlog support
20 * Copyright (c) 2004-2006 Marc Lehmann <pcg@goof.com> 20 * Copyright (c) 2004-2006 Marc Lehmann <pcg@goof.com>
21 * Copyright (c) 2006 Emanuele Giaquinta <e.giaquinta@glauco.it>
21 * 22 *
22 * This program is free software; you can redistribute it and/or modify 23 * This program is free software; you can redistribute it and/or modify
23 * it under the terms of the GNU General Public License as published by 24 * it under the terms of the GNU General Public License as published by
24 * the Free Software Foundation; either version 2 of the License, or 25 * the Free Software Foundation; either version 2 of the License, or
25 * (at your option) any later version. 26 * (at your option) any later version.
… …
38 39
39#include "ptytty.h" 40#include "ptytty.h"
40 41
41#if UTMP_SUPPORT 42#if UTMP_SUPPORT
42 43
43#if HAVE_STRUCT_UTMP 44#include <cstdio>
44static int write_bsd_utmp (int utmp_pos, struct utmp *wu);
45static void update_wtmp (const char *fname, const struct utmp *putmp);
46#endif
47 45
48static void update_lastlog (const char *fname, const char *pty, const char *host); 46#include <sys/types.h>
47#include <sys/stat.h>
48#include <fcntl.h>
49#include <unistd.h>
50#include <time.h>
51#include <errno.h>
49 52
50/* 53/*
51 * BSD style utmp entry 54 * BSD style utmp entry
52 * ut_line, ut_name, ut_host, ut_time 55 * ut_line, ut_name, ut_host, ut_time
53 * SYSV style utmp (and utmpx) entry 56 * SYSV style utmp (and utmpx) entry
54 * ut_user, ut_id, ut_line, ut_pid, ut_type, ut_exit, ut_time 57 * ut_user, ut_id, ut_line, ut_pid, ut_type, ut_exit, ut_time
55 */ 58 */
56 59
57/* ------------------------------------------------------------------------- */ 60/* ------------------------------------------------------------------------- */
61/*
62 * Write a BSD style utmp entry
63 */
64#if defined(HAVE_STRUCT_UTMP) && !defined(HAVE_UTMP_PID)
65static int
66write_bsd_utmp (int utmp_pos, struct utmp *wu)
67{
68 int fd;
69
70 if (utmp_pos <= 0 || (fd = open (UTMP_FILE, O_WRONLY)) == -1)
71 return 0;
72
73 if (lseek (fd, (off_t) (utmp_pos * sizeof (struct utmp)), SEEK_SET) != -1)
74 write (fd, wu, sizeof (struct utmp));
75 close (fd);
76 return 1;
77}
78#endif
79
80/* ------------------------------------------------------------------------- */
81/*
82 * Update a BSD style wtmp entry
83 */
84#if defined(WTMP_SUPPORT) && !defined(HAVE_UPDWTMP) && defined(HAVE_STRUCT_UTMP)
85static void
86update_wtmp (const char *fname, const struct utmp *putmp)
87{
88 int fd, gotlock, retry;
89 struct flock lck; /* fcntl locking scheme */
90 struct stat sbuf;
91
92 if ((fd = open (fname, O_WRONLY | O_APPEND, 0)) < 0)
93 return;
94
95 lck.l_whence = SEEK_END; /* start lock at current eof */
96 lck.l_len = 0; /* end at ``largest possible eof'' */
97 lck.l_start = 0;
98 lck.l_type = F_WRLCK; /* we want a write lock */
99
100 /* attempt lock with F_SETLK; F_SETLKW would cause a deadlock! */
101 for (retry = 10, gotlock = 0; retry--;)
102 if (fcntl (fd, F_SETLK, &lck) != -1)
103 {
104 gotlock = 1;
105 break;
106 }
107 else if (errno != EAGAIN && errno != EACCES)
108 break;
109 if (!gotlock)
110 {
111 /* give it up */
112 close (fd);
113 return;
114 }
115 if (fstat (fd, &sbuf) == 0)
116 if (write (fd, putmp, sizeof (struct utmp)) != sizeof (struct utmp))
117 ftruncate (fd, sbuf.st_size); /* remove bad writes */
118
119 lck.l_type = F_UNLCK; /* unlocking the file */
120 fcntl (fd, F_SETLK, &lck);
121 close (fd);
122}
123#endif
124
125/* ------------------------------------------------------------------------- */
126#ifdef LASTLOG_SUPPORT
127static void
128update_lastlog (const char *fname, const char *pty, const char *host)
129{
130# if defined(HAVE_STRUCT_LASTLOGX) && defined(HAVE_UPDLASTLOGX)
131 struct lastlogx llx;
132# endif
133# ifdef HAVE_STRUCT_LASTLOG
134 int fd;
135 struct lastlog ll;
136 char lastlogfile[256];
137 struct passwd *pwent;
138 struct stat st;
139# endif
140
141# if defined(HAVE_STRUCT_LASTLOGX) && defined(HAVE_UPDLASTLOGX)
142 memset (&llx, 0, sizeof (llx));
143 llx.ll_tv.tv_sec = time (NULL);
144 llx.ll_tv.tv_usec = 0;
145 strncpy (llx.ll_line, pty, sizeof (llx.ll_line));
146 strncpy (llx.ll_host, host, sizeof (llx.ll_host));
147 updlastlogx (LASTLOGX_FILE, getuid (), &llx);
148# endif
149
150# ifdef HAVE_STRUCT_LASTLOG
151 pwent = getpwuid (getuid ());
152 if (!pwent)
153 {
154 ptytty_warn ("no entry in password file, not updating lastlog.\n", 0);
155 return;
156 }
157
158 memset (&ll, 0, sizeof (ll));
159 ll.ll_time = time (NULL);
160 strncpy (ll.ll_line, pty, sizeof (ll.ll_line));
161 strncpy (ll.ll_host, host, sizeof (ll.ll_host));
162 if (stat (fname, &st) != 0)
163 return;
164 if (S_ISDIR (st.st_mode))
165 {
166 sprintf (lastlogfile, "%.*s/%.*s",
167 (int)(sizeof (lastlogfile) - sizeof (pwent->pw_name) - 2), fname,
168 (int)sizeof (pwent->pw_name),
169 (!pwent->pw_name || pwent->pw_name[0] == '\0') ? "unknown"
170 : pwent->pw_name);
171 if ((fd = open (lastlogfile, O_WRONLY | O_CREAT, 0644)) >= 0)
172 {
173 write (fd, &ll, sizeof (ll));
174 close (fd);
175 }
176 }
177 else if (S_ISREG (st.st_mode))
178 if ((fd = open (fname, O_RDWR)) != -1)
179 {
180 if (lseek (fd, (off_t) ((long)pwent->pw_uid * sizeof (ll)),
181 SEEK_SET) != -1)
182 write (fd, &ll, sizeof (ll));
183 close (fd);
184 }
185# endif /* HAVE_STRUCT_LASTLOG */
186}
187#endif /* LASTLOG_SUPPORT */
188
189/* ------------------------------------------------------------------------- */
58 190
59/* 191/*
60 * make and write utmp and wtmp entries 192 * make and write utmp and wtmp entries
61 */ 193 */
62void 194void
… …
76#ifdef HAVE_STRUCT_UTMPX 208#ifdef HAVE_STRUCT_UTMPX
77 struct utmpx *utx = &this->utx; 209 struct utmpx *utx = &this->utx;
78#endif 210#endif
79 int i; 211 int i;
80 struct passwd *pwent = getpwuid (getuid ()); 212 struct passwd *pwent = getpwuid (getuid ());
213 const char *name = (pwent && pwent->pw_name) ? pwent->pw_name : "?";
81 214
82 if (!strncmp (pty, "/dev/", 5)) 215 if (!strncmp (pty, "/dev/", 5))
83 pty += 5; /* skip /dev/ prefix */ 216 pty += 5; /* skip /dev/ prefix */
84 217
85#if defined(HAVE_UTMP_PID) || defined(HAVE_STRUCT_UTMPX) 218#if defined(HAVE_UTMP_PID) || defined(HAVE_STRUCT_UTMPX)
86 if (!strncmp (pty, "pty", 3) || !strncmp (pty, "tty", 3)) 219 if (!strncmp (pty, "pty", 3) || !strncmp (pty, "tty", 3))
87 strncpy (ut_id, pty + 3, sizeof (ut_id)); 220 strncpy (ut_id, pty + 3, sizeof (ut_id));
88 else if (sscanf (pty, "pts/%d", &i) == 1) 221 else if (sscanf (pty, "pts/%d", &i) == 1)
89 sprintf (ut_id, "vt%02x", (i & 0xff)); /* sysv naming */ 222 sprintf (ut_id, "vt%02x", (i & 0xff)); /* sysv naming */
90 else if (strncmp (pty, "pty", 3) && strncmp (pty, "tty", 3)) 223 else
91 { 224 {
92 warn ("can't parse tty name \"%s\", not adding utmp entry.\n", pty); 225 ptytty_warn ("can't parse tty name \"%s\", not adding utmp entry.\n", pty);
93 return; 226 return;
94 } 227 }
95#endif 228#endif
96 229
97#ifdef HAVE_STRUCT_UTMP 230#ifdef HAVE_STRUCT_UTMP
… …
99# ifdef HAVE_UTMP_PID 232# ifdef HAVE_UTMP_PID
100 setutent (); 233 setutent ();
101 strncpy (ut->ut_id, ut_id, sizeof (ut->ut_id)); 234 strncpy (ut->ut_id, ut_id, sizeof (ut->ut_id));
102 ut->ut_type = DEAD_PROCESS; 235 ut->ut_type = DEAD_PROCESS;
103 getutid (ut); /* position to entry in utmp file */ 236 getutid (ut); /* position to entry in utmp file */
104 strncpy (this->ut_id, ut_id, sizeof (this->ut_id));
105# endif 237# endif
106#endif 238#endif
107 239
108#ifdef HAVE_STRUCT_UTMPX 240#ifdef HAVE_STRUCT_UTMPX
109 memset (utx, 0, sizeof (struct utmpx)); 241 memset (utx, 0, sizeof (struct utmpx));
110 setutxent (); 242 setutxent ();
111 strncpy (utx->ut_id, ut_id, sizeof (utx->ut_id)); 243 strncpy (utx->ut_id, ut_id, sizeof (utx->ut_id));
112 utx->ut_type = DEAD_PROCESS; 244 utx->ut_type = DEAD_PROCESS;
113 getutxid (utx); /* position to entry in utmp file */ 245 getutxid (utx); /* position to entry in utmp file */
114 strncpy (this->ut_id, ut_id, sizeof (this->ut_id));
115#endif 246#endif
116 247
117#ifdef HAVE_STRUCT_UTMP 248#ifdef HAVE_STRUCT_UTMP
118 strncpy (ut->ut_line, pty, sizeof (ut->ut_line)); 249 strncpy (ut->ut_line, pty, sizeof (ut->ut_line));
250# ifdef HAVE_UTMP_HOST
251 strncpy (ut->ut_host, hostname, sizeof (ut->ut_host));
252# endif
119 ut->ut_time = time (NULL); 253 ut->ut_time = time (NULL);
120# ifdef HAVE_UTMP_PID 254# ifdef HAVE_UTMP_PID
121 strncpy (ut->ut_user, (pwent && pwent->pw_name) ? pwent->pw_name : "?", 255 strncpy (ut->ut_user, name, sizeof (ut->ut_user));
122 sizeof (ut->ut_user));
123 strncpy (ut->ut_id, ut_id, sizeof (ut->ut_id)); 256 strncpy (ut->ut_id, ut_id, sizeof (ut->ut_id));
124 ut->ut_time = time (NULL);
125 ut->ut_pid = cmd_pid; 257 ut->ut_pid = cmd_pid;
126# ifdef HAVE_UTMP_HOST
127 strncpy (ut->ut_host, hostname, sizeof (ut->ut_host));
128# endif
129 ut->ut_type = USER_PROCESS; 258 ut->ut_type = USER_PROCESS;
130 pututline (ut); 259 pututline (ut);
131 endutent (); /* close the file */ 260 endutent (); /* close the file */
132 utmp_pos = 0; 261 utmp_pos = 0;
133# else 262# else
134 strncpy (ut->ut_name, (pwent && pwent->pw_name) ? pwent->pw_name : "?",
135 sizeof (ut->ut_name));
136# ifdef HAVE_UTMP_HOST
137 strncpy (ut->ut_host, hostname, sizeof (ut->ut_host)); 263 strncpy (ut->ut_name, name, sizeof (ut->ut_name));
138# endif
139# endif 264# endif
140#endif 265#endif
141 266
142#ifdef HAVE_STRUCT_UTMPX 267#ifdef HAVE_STRUCT_UTMPX
143 strncpy (utx->ut_line, pty, sizeof (utx->ut_line)); 268 strncpy (utx->ut_line, pty, sizeof (utx->ut_line));
144 strncpy (utx->ut_user, (pwent && pwent->pw_name) ? pwent->pw_name : "?", 269 strncpy (utx->ut_user, name, sizeof (utx->ut_user));
145 sizeof (utx->ut_user));
146 strncpy (utx->ut_id, ut_id, sizeof (utx->ut_id)); 270 strncpy (utx->ut_id, ut_id, sizeof (utx->ut_id));
147# if HAVE_UTMPX_SESSION 271# if HAVE_UTMPX_SESSION
148 utx->ut_session = getsid (0); 272 utx->ut_session = getsid (0);
149# endif 273# endif
150 utx->ut_tv.tv_sec = time (NULL); 274 utx->ut_tv.tv_sec = time (NULL);
… …
167 utmp_pos = 0; 291 utmp_pos = 0;
168#endif 292#endif
169 293
170#if defined(HAVE_STRUCT_UTMP) && !defined(HAVE_UTMP_PID) 294#if defined(HAVE_STRUCT_UTMP) && !defined(HAVE_UTMP_PID)
171 { 295 {
172# ifdef HAVE_TTYSLOT 296# if 1
173 int fdstdin = dup (STDIN_FILENO); 297 int fdstdin = dup (STDIN_FILENO);
174 dup2 (tty, STDIN_FILENO); 298 dup2 (tty, STDIN_FILENO);
175 299
176 i = ttyslot (); 300 i = ttyslot ();
177 if (write_bsd_utmp (i, ut)) 301 if (write_bsd_utmp (i, ut))
178 utmp_pos = i; 302 utmp_pos = i;
179 303
180 dup2 (fdstdin, STDIN_FILENO); 304 dup2 (fdstdin, STDIN_FILENO);
181 close (fdstdin); 305 close (fdstdin);
182# else
183 FILE *fd0;
184
185 if ((fd0 = fopen (TTYTAB_FILENAME, "r")) != NULL)
186 {
187 char buf[256], name[256];
188
189 buf[sizeof (buf) - 1] = '\0';
190 for (i = 1; (fgets (buf, sizeof (buf) - 1, fd0) != NULL);)
191 {
192 if (*buf == '#' || sscanf (buf, "%s", name) != 1)
193 continue;
194 if (!strcmp (ut->ut_line, name))
195 {
196 if (!write_bsd_utmp (i, ut))
197 i = 0;
198 utmp_pos = i;
199 fclose (fd0);
200 break;
201 }
202 i++;
203 }
204 fclose (fd0);
205 }
206# endif 306# endif
207 } 307 }
208#endif 308#endif
209 309
210#ifdef WTMP_SUPPORT 310#ifdef WTMP_SUPPORT
… …
323#endif 423#endif
324 424
325 cmd_pid = 0; 425 cmd_pid = 0;
326} 426}
327 427
328/* ------------------------------------------------------------------------- */
329/*
330 * Write a BSD style utmp entry
331 */
332#if defined(HAVE_STRUCT_UTMP) && !defined(HAVE_UTMP_PID)
333static int
334write_bsd_utmp (int utmp_pos, struct utmp *wu)
335{
336 int fd;
337
338 if (utmp_pos <= 0 || (fd = open (UTMP_FILE, O_WRONLY)) == -1)
339 return 0;
340
341 if (lseek (fd, (off_t) (utmp_pos * sizeof (struct utmp)), SEEK_SET) != -1)
342 write (fd, wu, sizeof (struct utmp));
343 close (fd);
344 return 1;
345}
346#endif
347
348/* ------------------------------------------------------------------------- */
349/*
350 * Update a BSD style wtmp entry
351 */
352#if defined(WTMP_SUPPORT) && !defined(HAVE_UPDWTMP) && defined(HAVE_STRUCT_UTMP)
353static void
354update_wtmp (const char *fname, const struct utmp *putmp)
355{
356 int fd, gotlock, retry;
357 struct flock lck; /* fcntl locking scheme */
358 struct stat sbuf;
359
360 if ((fd = open (fname, O_WRONLY | O_APPEND, 0)) < 0)
361 return;
362
363 lck.l_whence = SEEK_END; /* start lock at current eof */
364 lck.l_len = 0; /* end at ``largest possible eof'' */
365 lck.l_start = 0;
366 lck.l_type = F_WRLCK; /* we want a write lock */
367
368 /* attempt lock with F_SETLK; F_SETLKW would cause a deadlock! */
369 for (retry = 10, gotlock = 0; retry--;)
370 if (fcntl (fd, F_SETLK, &lck) != -1)
371 {
372 gotlock = 1;
373 break;
374 }
375 else if (errno != EAGAIN && errno != EACCES)
376 break;
377 if (!gotlock)
378 { /* give it up */
379 close (fd);
380 return;
381 }
382 if (fstat (fd, &sbuf) == 0)
383 if (write (fd, putmp, sizeof (struct utmp)) != sizeof (struct utmp))
384 ftruncate (fd, sbuf.st_size); /* remove bad writes */
385
386 lck.l_type = F_UNLCK; /* unlocking the file */
387 fcntl (fd, F_SETLK, &lck);
388 close (fd);
389}
390#endif
391
392/* ------------------------------------------------------------------------- */
393#ifdef LASTLOG_SUPPORT
394static void
395update_lastlog (const char *fname, const char *pty, const char *host)
396{
397# ifdef HAVE_STRUCT_LASTLOGX
398 struct lastlogx llx;
399# endif
400# ifdef HAVE_STRUCT_LASTLOG
401 int fd;
402 struct lastlog ll;
403# ifdef LASTLOG_IS_DIR
404 char lastlogfile[256];
405# endif
406 struct passwd *pwent;
407# endif
408
409# ifdef HAVE_STRUCT_LASTLOGX
410 memset (&llx, 0, sizeof (llx));
411 llx.ll_tv.tv_sec = time (NULL);
412 llx.ll_tv.tv_usec = 0;
413 strncpy (llx.ll_line, pty, sizeof (llx.ll_line));
414 strncpy (llx.ll_host, host, sizeof (llx.ll_host));
415 updlastlogx (LASTLOGX_FILE, getuid (), &llx);
416# endif
417
418# ifdef HAVE_STRUCT_LASTLOG
419 pwent = getpwuid (getuid ());
420 if (!pwent)
421 {
422 warn ("no entry in password file, not updating lastlog.\n");
423 return;
424 }
425
426 memset (&ll, 0, sizeof (ll));
427 ll.ll_time = time (NULL);
428 strncpy (ll.ll_line, pty, sizeof (ll.ll_line));
429 strncpy (ll.ll_host, host, sizeof (ll.ll_host));
430# ifdef LASTLOG_IS_DIR
431 sprintf (lastlogfile, "%.*s/%.*s",
432 sizeof (lastlogfile) - sizeof (pwent->pw_name) - 2, fname,
433 sizeof (pwent->pw_name),
434 (!pwent->pw_name || pwent->pw_name[0] == '\0') ? "unknown"
435 : pwent->pw_name);
436 if ((fd = open (lastlogfile, O_WRONLY | O_CREAT, 0644)) >= 0)
437 {
438 write (fd, &ll, sizeof (ll));
439 close (fd);
440 }
441# else
442 if ((fd = open (fname, O_RDWR)) != -1)
443 {
444 if (lseek (fd, (off_t) ((long)pwent->pw_uid * sizeof (ll)),
445 SEEK_SET) != -1)
446 write (fd, &ll, sizeof (ll));
447 close (fd);
448 }
449# endif /* LASTLOG_IS_DIR */
450# endif /* HAVE_STRUCT_LASTLOG */
451}
452#endif /* LASTLOG_SUPPORT */
453
454#else 428#else
455void 429void
456ptytty_unix::login (int cmd_pid, bool login_shell, const char *hostname) 430ptytty_unix::login (int cmd_pid, bool login_shell, const char *hostname)
457{ 431{
458} 432}

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