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Comparing rxvt-unicode/src/logging.C (file contents):
Revision 1.39 by root, Sun Jan 22 12:21:47 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 * Copyright (c) 2006 Emanuele Giaquinta <e.giaquinta@glauco.it>
22 * 22 *
23 * 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
24 * 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
25 * the Free Software Foundation; either version 2 of the License, or 25 * the Free Software Foundation; either version 2 of the License, or
26 * (at your option) any later version. 26 * (at your option) any later version.
… …
35 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 35 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
36 *----------------------------------------------------------------------*/ 36 *----------------------------------------------------------------------*/
37 37
38#include "../config.h" 38#include "../config.h"
39 39
40#include "ptytty.h"
41
42#if UTMP_SUPPORT
43
40#include <cstdio> 44#include <cstdio>
41 45
42#include <sys/types.h> 46#include <sys/types.h>
43#include <sys/stat.h> 47#include <sys/stat.h>
44#include <sys/fcntl.h> 48#include <fcntl.h>
45#include <unistd.h> 49#include <unistd.h>
46#include <time.h> 50#include <time.h>
47 51#include <errno.h>
48#include "ptytty.h"
49
50#if UTMP_SUPPORT
51
52#if HAVE_STRUCT_UTMP
53static int write_bsd_utmp (int utmp_pos, struct utmp *wu);
54static void update_wtmp (const char *fname, const struct utmp *putmp);
55#endif
56
57static void update_lastlog (const char *fname, const char *pty, const char *host);
58 52
59/* 53/*
60 * BSD style utmp entry 54 * BSD style utmp entry
61 * ut_line, ut_name, ut_host, ut_time 55 * ut_line, ut_name, ut_host, ut_time
62 * SYSV style utmp (and utmpx) entry 56 * SYSV style utmp (and utmpx) entry
63 * 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
64 */ 58 */
65 59
66/* ------------------------------------------------------------------------- */ 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/* ------------------------------------------------------------------------- */
67 190
68/* 191/*
69 * make and write utmp and wtmp entries 192 * make and write utmp and wtmp entries
70 */ 193 */
71void 194void
… …
85#ifdef HAVE_STRUCT_UTMPX 208#ifdef HAVE_STRUCT_UTMPX
86 struct utmpx *utx = &this->utx; 209 struct utmpx *utx = &this->utx;
87#endif 210#endif
88 int i; 211 int i;
89 struct passwd *pwent = getpwuid (getuid ()); 212 struct passwd *pwent = getpwuid (getuid ());
213 const char *name = (pwent && pwent->pw_name) ? pwent->pw_name : "?";
90 214
91 if (!strncmp (pty, "/dev/", 5)) 215 if (!strncmp (pty, "/dev/", 5))
92 pty += 5; /* skip /dev/ prefix */ 216 pty += 5; /* skip /dev/ prefix */
93 217
94#if defined(HAVE_UTMP_PID) || defined(HAVE_STRUCT_UTMPX) 218#if defined(HAVE_UTMP_PID) || defined(HAVE_STRUCT_UTMPX)
95 if (!strncmp (pty, "pty", 3) || !strncmp (pty, "tty", 3)) 219 if (!strncmp (pty, "pty", 3) || !strncmp (pty, "tty", 3))
96 strncpy (ut_id, pty + 3, sizeof (ut_id)); 220 strncpy (ut_id, pty + 3, sizeof (ut_id));
97 else if (sscanf (pty, "pts/%d", &i) == 1) 221 else if (sscanf (pty, "pts/%d", &i) == 1)
98 sprintf (ut_id, "vt%02x", (i & 0xff)); /* sysv naming */ 222 sprintf (ut_id, "vt%02x", (i & 0xff)); /* sysv naming */
99 else if (strncmp (pty, "pty", 3) && strncmp (pty, "tty", 3)) 223 else
100 { 224 {
101 ptytty_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);
102 return; 226 return;
103 } 227 }
104#endif 228#endif
… …
108# ifdef HAVE_UTMP_PID 232# ifdef HAVE_UTMP_PID
109 setutent (); 233 setutent ();
110 strncpy (ut->ut_id, ut_id, sizeof (ut->ut_id)); 234 strncpy (ut->ut_id, ut_id, sizeof (ut->ut_id));
111 ut->ut_type = DEAD_PROCESS; 235 ut->ut_type = DEAD_PROCESS;
112 getutid (ut); /* position to entry in utmp file */ 236 getutid (ut); /* position to entry in utmp file */
113 strncpy (this->ut_id, ut_id, sizeof (this->ut_id));
114# endif 237# endif
115#endif 238#endif
116 239
117#ifdef HAVE_STRUCT_UTMPX 240#ifdef HAVE_STRUCT_UTMPX
118 memset (utx, 0, sizeof (struct utmpx)); 241 memset (utx, 0, sizeof (struct utmpx));
119 setutxent (); 242 setutxent ();
120 strncpy (utx->ut_id, ut_id, sizeof (utx->ut_id)); 243 strncpy (utx->ut_id, ut_id, sizeof (utx->ut_id));
121 utx->ut_type = DEAD_PROCESS; 244 utx->ut_type = DEAD_PROCESS;
122 getutxid (utx); /* position to entry in utmp file */ 245 getutxid (utx); /* position to entry in utmp file */
123 strncpy (this->ut_id, ut_id, sizeof (this->ut_id));
124#endif 246#endif
125 247
126#ifdef HAVE_STRUCT_UTMP 248#ifdef HAVE_STRUCT_UTMP
127 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
128 ut->ut_time = time (NULL); 253 ut->ut_time = time (NULL);
129# ifdef HAVE_UTMP_PID 254# ifdef HAVE_UTMP_PID
130 strncpy (ut->ut_user, (pwent && pwent->pw_name) ? pwent->pw_name : "?", 255 strncpy (ut->ut_user, name, sizeof (ut->ut_user));
131 sizeof (ut->ut_user));
132 strncpy (ut->ut_id, ut_id, sizeof (ut->ut_id)); 256 strncpy (ut->ut_id, ut_id, sizeof (ut->ut_id));
133 ut->ut_time = time (NULL);
134 ut->ut_pid = cmd_pid; 257 ut->ut_pid = cmd_pid;
135# ifdef HAVE_UTMP_HOST
136 strncpy (ut->ut_host, hostname, sizeof (ut->ut_host));
137# endif
138 ut->ut_type = USER_PROCESS; 258 ut->ut_type = USER_PROCESS;
139 pututline (ut); 259 pututline (ut);
140 endutent (); /* close the file */ 260 endutent (); /* close the file */
141 utmp_pos = 0; 261 utmp_pos = 0;
142# else 262# else
143 strncpy (ut->ut_name, (pwent && pwent->pw_name) ? pwent->pw_name : "?",
144 sizeof (ut->ut_name));
145# ifdef HAVE_UTMP_HOST
146 strncpy (ut->ut_host, hostname, sizeof (ut->ut_host)); 263 strncpy (ut->ut_name, name, sizeof (ut->ut_name));
147# endif
148# endif 264# endif
149#endif 265#endif
150 266
151#ifdef HAVE_STRUCT_UTMPX 267#ifdef HAVE_STRUCT_UTMPX
152 strncpy (utx->ut_line, pty, sizeof (utx->ut_line)); 268 strncpy (utx->ut_line, pty, sizeof (utx->ut_line));
153 strncpy (utx->ut_user, (pwent && pwent->pw_name) ? pwent->pw_name : "?", 269 strncpy (utx->ut_user, name, sizeof (utx->ut_user));
154 sizeof (utx->ut_user));
155 strncpy (utx->ut_id, ut_id, sizeof (utx->ut_id)); 270 strncpy (utx->ut_id, ut_id, sizeof (utx->ut_id));
156# if HAVE_UTMPX_SESSION 271# if HAVE_UTMPX_SESSION
157 utx->ut_session = getsid (0); 272 utx->ut_session = getsid (0);
158# endif 273# endif
159 utx->ut_tv.tv_sec = time (NULL); 274 utx->ut_tv.tv_sec = time (NULL);
… …
176 utmp_pos = 0; 291 utmp_pos = 0;
177#endif 292#endif
178 293
179#if defined(HAVE_STRUCT_UTMP) && !defined(HAVE_UTMP_PID) 294#if defined(HAVE_STRUCT_UTMP) && !defined(HAVE_UTMP_PID)
180 { 295 {
181# ifdef HAVE_TTYSLOT 296# if 1
182 int fdstdin = dup (STDIN_FILENO); 297 int fdstdin = dup (STDIN_FILENO);
183 dup2 (tty, STDIN_FILENO); 298 dup2 (tty, STDIN_FILENO);
184 299
185 i = ttyslot (); 300 i = ttyslot ();
186 if (write_bsd_utmp (i, ut)) 301 if (write_bsd_utmp (i, ut))
187 utmp_pos = i; 302 utmp_pos = i;
188 303
189 dup2 (fdstdin, STDIN_FILENO); 304 dup2 (fdstdin, STDIN_FILENO);
190 close (fdstdin); 305 close (fdstdin);
191# else
192 FILE *fd0;
193
194 if ((fd0 = fopen (TTYTAB_FILENAME, "r")) != NULL)
195 {
196 char buf[256], name[256];
197
198 buf[sizeof (buf) - 1] = '\0';
199 for (i = 1; (fgets (buf, sizeof (buf) - 1, fd0) != NULL);)
200 {
201 if (*buf == '#' || sscanf (buf, "%s", name) != 1)
202 continue;
203 if (!strcmp (ut->ut_line, name))
204 {
205 if (!write_bsd_utmp (i, ut))
206 i = 0;
207 utmp_pos = i;
208 fclose (fd0);
209 break;
210 }
211 i++;
212 }
213 fclose (fd0);
214 }
215# endif 306# endif
216 } 307 }
217#endif 308#endif
218 309
219#ifdef WTMP_SUPPORT 310#ifdef WTMP_SUPPORT
… …
332#endif 423#endif
333 424
334 cmd_pid = 0; 425 cmd_pid = 0;
335} 426}
336 427
337/* ------------------------------------------------------------------------- */
338/*
339 * Write a BSD style utmp entry
340 */
341#if defined(HAVE_STRUCT_UTMP) && !defined(HAVE_UTMP_PID)
342static int
343write_bsd_utmp (int utmp_pos, struct utmp *wu)
344{
345 int fd;
346
347 if (utmp_pos <= 0 || (fd = open (UTMP_FILE, O_WRONLY)) == -1)
348 return 0;
349
350 if (lseek (fd, (off_t) (utmp_pos * sizeof (struct utmp)), SEEK_SET) != -1)
351 write (fd, wu, sizeof (struct utmp));
352 close (fd);
353 return 1;
354}
355#endif
356
357/* ------------------------------------------------------------------------- */
358/*
359 * Update a BSD style wtmp entry
360 */
361#if defined(WTMP_SUPPORT) && !defined(HAVE_UPDWTMP) && defined(HAVE_STRUCT_UTMP)
362static void
363update_wtmp (const char *fname, const struct utmp *putmp)
364{
365 int fd, gotlock, retry;
366 struct flock lck; /* fcntl locking scheme */
367 struct stat sbuf;
368
369 if ((fd = open (fname, O_WRONLY | O_APPEND, 0)) < 0)
370 return;
371
372 lck.l_whence = SEEK_END; /* start lock at current eof */
373 lck.l_len = 0; /* end at ``largest possible eof'' */
374 lck.l_start = 0;
375 lck.l_type = F_WRLCK; /* we want a write lock */
376
377 /* attempt lock with F_SETLK; F_SETLKW would cause a deadlock! */
378 for (retry = 10, gotlock = 0; retry--;)
379 if (fcntl (fd, F_SETLK, &lck) != -1)
380 {
381 gotlock = 1;
382 break;
383 }
384 else if (errno != EAGAIN && errno != EACCES)
385 break;
386 if (!gotlock)
387 { /* give it up */
388 close (fd);
389 return;
390 }
391 if (fstat (fd, &sbuf) == 0)
392 if (write (fd, putmp, sizeof (struct utmp)) != sizeof (struct utmp))
393 ftruncate (fd, sbuf.st_size); /* remove bad writes */
394
395 lck.l_type = F_UNLCK; /* unlocking the file */
396 fcntl (fd, F_SETLK, &lck);
397 close (fd);
398}
399#endif
400
401/* ------------------------------------------------------------------------- */
402#ifdef LASTLOG_SUPPORT
403static void
404update_lastlog (const char *fname, const char *pty, const char *host)
405{
406# ifdef HAVE_STRUCT_LASTLOGX
407 struct lastlogx llx;
408# endif
409# ifdef HAVE_STRUCT_LASTLOG
410 int fd;
411 struct lastlog ll;
412# ifdef LASTLOG_IS_DIR
413 char lastlogfile[256];
414# endif
415 struct passwd *pwent;
416# endif
417
418# ifdef HAVE_STRUCT_LASTLOGX
419 memset (&llx, 0, sizeof (llx));
420 llx.ll_tv.tv_sec = time (NULL);
421 llx.ll_tv.tv_usec = 0;
422 strncpy (llx.ll_line, pty, sizeof (llx.ll_line));
423 strncpy (llx.ll_host, host, sizeof (llx.ll_host));
424 updlastlogx (LASTLOGX_FILE, getuid (), &llx);
425# endif
426
427# ifdef HAVE_STRUCT_LASTLOG
428 pwent = getpwuid (getuid ());
429 if (!pwent)
430 {
431 ptytty_warn ("no entry in password file, not updating lastlog.\n");
432 return;
433 }
434
435 memset (&ll, 0, sizeof (ll));
436 ll.ll_time = time (NULL);
437 strncpy (ll.ll_line, pty, sizeof (ll.ll_line));
438 strncpy (ll.ll_host, host, sizeof (ll.ll_host));
439# ifdef LASTLOG_IS_DIR
440 sprintf (lastlogfile, "%.*s/%.*s",
441 sizeof (lastlogfile) - sizeof (pwent->pw_name) - 2, fname,
442 sizeof (pwent->pw_name),
443 (!pwent->pw_name || pwent->pw_name[0] == '\0') ? "unknown"
444 : pwent->pw_name);
445 if ((fd = open (lastlogfile, O_WRONLY | O_CREAT, 0644)) >= 0)
446 {
447 write (fd, &ll, sizeof (ll));
448 close (fd);
449 }
450# else
451 if ((fd = open (fname, O_RDWR)) != -1)
452 {
453 if (lseek (fd, (off_t) ((long)pwent->pw_uid * sizeof (ll)),
454 SEEK_SET) != -1)
455 write (fd, &ll, sizeof (ll));
456 close (fd);
457 }
458# endif /* LASTLOG_IS_DIR */
459# endif /* HAVE_STRUCT_LASTLOG */
460}
461#endif /* LASTLOG_SUPPORT */
462
463#else 428#else
464void 429void
465ptytty_unix::login (int cmd_pid, bool login_shell, const char *hostname) 430ptytty_unix::login (int cmd_pid, bool login_shell, const char *hostname)
466{ 431{
467} 432}

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