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Comparing rxvt-unicode/src/logging.C (file contents):
Revision 1.38 by root, Sun Jan 22 04:01:52 2006 UTC vs.
Revision 1.44 by ayin, Tue Dec 11 21:49:12 2007 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.
… …
34 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 35 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
35 *----------------------------------------------------------------------*/ 36 *----------------------------------------------------------------------*/
36 37
37#include "../config.h" 38#include "../config.h"
38 39
40#include "ptytty.h"
41
42#if UTMP_SUPPORT
43
39#include <cstdio> 44#include <cstdio>
40 45
41#include <sys/types.h> 46#include <sys/types.h>
42#include <sys/stat.h> 47#include <sys/stat.h>
43#include <sys/fcntl.h> 48#include <sys/fcntl.h>
44#include <unistd.h> 49#include <unistd.h>
45#include <time.h> 50#include <time.h>
46
47#include "ptytty.h"
48
49#if UTMP_SUPPORT
50
51#if HAVE_STRUCT_UTMP
52static int write_bsd_utmp (int utmp_pos, struct utmp *wu);
53static void update_wtmp (const char *fname, const struct utmp *putmp);
54#endif
55
56static void update_lastlog (const char *fname, const char *pty, const char *host);
57 51
58/* 52/*
59 * BSD style utmp entry 53 * BSD style utmp entry
60 * ut_line, ut_name, ut_host, ut_time 54 * ut_line, ut_name, ut_host, ut_time
61 * SYSV style utmp (and utmpx) entry 55 * SYSV style utmp (and utmpx) entry
62 * ut_user, ut_id, ut_line, ut_pid, ut_type, ut_exit, ut_time 56 * ut_user, ut_id, ut_line, ut_pid, ut_type, ut_exit, ut_time
63 */ 57 */
64 58
65/* ------------------------------------------------------------------------- */ 59/* ------------------------------------------------------------------------- */
60/*
61 * Write a BSD style utmp entry
62 */
63#if defined(HAVE_STRUCT_UTMP) && !defined(HAVE_UTMP_PID)
64static int
65write_bsd_utmp (int utmp_pos, struct utmp *wu)
66{
67 int fd;
68
69 if (utmp_pos <= 0 || (fd = open (UTMP_FILE, O_WRONLY)) == -1)
70 return 0;
71
72 if (lseek (fd, (off_t) (utmp_pos * sizeof (struct utmp)), SEEK_SET) != -1)
73 write (fd, wu, sizeof (struct utmp));
74 close (fd);
75 return 1;
76}
77#endif
78
79/* ------------------------------------------------------------------------- */
80/*
81 * Update a BSD style wtmp entry
82 */
83#if defined(WTMP_SUPPORT) && !defined(HAVE_UPDWTMP) && defined(HAVE_STRUCT_UTMP)
84static void
85update_wtmp (const char *fname, const struct utmp *putmp)
86{
87 int fd, gotlock, retry;
88 struct flock lck; /* fcntl locking scheme */
89 struct stat sbuf;
90
91 if ((fd = open (fname, O_WRONLY | O_APPEND, 0)) < 0)
92 return;
93
94 lck.l_whence = SEEK_END; /* start lock at current eof */
95 lck.l_len = 0; /* end at ``largest possible eof'' */
96 lck.l_start = 0;
97 lck.l_type = F_WRLCK; /* we want a write lock */
98
99 /* attempt lock with F_SETLK; F_SETLKW would cause a deadlock! */
100 for (retry = 10, gotlock = 0; retry--;)
101 if (fcntl (fd, F_SETLK, &lck) != -1)
102 {
103 gotlock = 1;
104 break;
105 }
106 else if (errno != EAGAIN && errno != EACCES)
107 break;
108 if (!gotlock)
109 {
110 /* give it up */
111 close (fd);
112 return;
113 }
114 if (fstat (fd, &sbuf) == 0)
115 if (write (fd, putmp, sizeof (struct utmp)) != sizeof (struct utmp))
116 ftruncate (fd, sbuf.st_size); /* remove bad writes */
117
118 lck.l_type = F_UNLCK; /* unlocking the file */
119 fcntl (fd, F_SETLK, &lck);
120 close (fd);
121}
122#endif
123
124/* ------------------------------------------------------------------------- */
125#ifdef LASTLOG_SUPPORT
126static void
127update_lastlog (const char *fname, const char *pty, const char *host)
128{
129# if defined(HAVE_STRUCT_LASTLOGX) && defined(HAVE_UPDLASTLOGX)
130 struct lastlogx llx;
131# endif
132# ifdef HAVE_STRUCT_LASTLOG
133 int fd;
134 struct lastlog ll;
135 char lastlogfile[256];
136 struct passwd *pwent;
137 struct stat st;
138# endif
139
140# if defined(HAVE_STRUCT_LASTLOGX) && defined(HAVE_UPDLASTLOGX)
141 memset (&llx, 0, sizeof (llx));
142 llx.ll_tv.tv_sec = time (NULL);
143 llx.ll_tv.tv_usec = 0;
144 strncpy (llx.ll_line, pty, sizeof (llx.ll_line));
145 strncpy (llx.ll_host, host, sizeof (llx.ll_host));
146 updlastlogx (LASTLOGX_FILE, getuid (), &llx);
147# endif
148
149# ifdef HAVE_STRUCT_LASTLOG
150 pwent = getpwuid (getuid ());
151 if (!pwent)
152 {
153 ptytty_warn ("no entry in password file, not updating lastlog.\n", 0);
154 return;
155 }
156
157 memset (&ll, 0, sizeof (ll));
158 ll.ll_time = time (NULL);
159 strncpy (ll.ll_line, pty, sizeof (ll.ll_line));
160 strncpy (ll.ll_host, host, sizeof (ll.ll_host));
161 if (stat (fname, &st) != 0)
162 return;
163 if (S_ISDIR (st.st_mode))
164 {
165 sprintf (lastlogfile, "%.*s/%.*s",
166 (int)(sizeof (lastlogfile) - sizeof (pwent->pw_name) - 2), fname,
167 (int)sizeof (pwent->pw_name),
168 (!pwent->pw_name || pwent->pw_name[0] == '\0') ? "unknown"
169 : pwent->pw_name);
170 if ((fd = open (lastlogfile, O_WRONLY | O_CREAT, 0644)) >= 0)
171 {
172 write (fd, &ll, sizeof (ll));
173 close (fd);
174 }
175 }
176 else if (S_ISREG (st.st_mode))
177 if ((fd = open (fname, O_RDWR)) != -1)
178 {
179 if (lseek (fd, (off_t) ((long)pwent->pw_uid * sizeof (ll)),
180 SEEK_SET) != -1)
181 write (fd, &ll, sizeof (ll));
182 close (fd);
183 }
184# endif /* HAVE_STRUCT_LASTLOG */
185}
186#endif /* LASTLOG_SUPPORT */
187
188/* ------------------------------------------------------------------------- */
66 189
67/* 190/*
68 * make and write utmp and wtmp entries 191 * make and write utmp and wtmp entries
69 */ 192 */
70void 193void
… …
84#ifdef HAVE_STRUCT_UTMPX 207#ifdef HAVE_STRUCT_UTMPX
85 struct utmpx *utx = &this->utx; 208 struct utmpx *utx = &this->utx;
86#endif 209#endif
87 int i; 210 int i;
88 struct passwd *pwent = getpwuid (getuid ()); 211 struct passwd *pwent = getpwuid (getuid ());
212 const char *name = (pwent && pwent->pw_name) ? pwent->pw_name : "?";
89 213
90 if (!strncmp (pty, "/dev/", 5)) 214 if (!strncmp (pty, "/dev/", 5))
91 pty += 5; /* skip /dev/ prefix */ 215 pty += 5; /* skip /dev/ prefix */
92 216
93#if defined(HAVE_UTMP_PID) || defined(HAVE_STRUCT_UTMPX) 217#if defined(HAVE_UTMP_PID) || defined(HAVE_STRUCT_UTMPX)
94 if (!strncmp (pty, "pty", 3) || !strncmp (pty, "tty", 3)) 218 if (!strncmp (pty, "pty", 3) || !strncmp (pty, "tty", 3))
95 strncpy (ut_id, pty + 3, sizeof (ut_id)); 219 strncpy (ut_id, pty + 3, sizeof (ut_id));
96 else if (sscanf (pty, "pts/%d", &i) == 1) 220 else if (sscanf (pty, "pts/%d", &i) == 1)
97 sprintf (ut_id, "vt%02x", (i & 0xff)); /* sysv naming */ 221 sprintf (ut_id, "vt%02x", (i & 0xff)); /* sysv naming */
98 else if (strncmp (pty, "pty", 3) && strncmp (pty, "tty", 3)) 222 else
99 { 223 {
100 ptytty_warn ("can't parse tty name \"%s\", not adding utmp entry.\n", pty); 224 ptytty_warn ("can't parse tty name \"%s\", not adding utmp entry.\n", pty);
101 return; 225 return;
102 } 226 }
103#endif 227#endif
… …
107# ifdef HAVE_UTMP_PID 231# ifdef HAVE_UTMP_PID
108 setutent (); 232 setutent ();
109 strncpy (ut->ut_id, ut_id, sizeof (ut->ut_id)); 233 strncpy (ut->ut_id, ut_id, sizeof (ut->ut_id));
110 ut->ut_type = DEAD_PROCESS; 234 ut->ut_type = DEAD_PROCESS;
111 getutid (ut); /* position to entry in utmp file */ 235 getutid (ut); /* position to entry in utmp file */
112 strncpy (this->ut_id, ut_id, sizeof (this->ut_id));
113# endif 236# endif
114#endif 237#endif
115 238
116#ifdef HAVE_STRUCT_UTMPX 239#ifdef HAVE_STRUCT_UTMPX
117 memset (utx, 0, sizeof (struct utmpx)); 240 memset (utx, 0, sizeof (struct utmpx));
118 setutxent (); 241 setutxent ();
119 strncpy (utx->ut_id, ut_id, sizeof (utx->ut_id)); 242 strncpy (utx->ut_id, ut_id, sizeof (utx->ut_id));
120 utx->ut_type = DEAD_PROCESS; 243 utx->ut_type = DEAD_PROCESS;
121 getutxid (utx); /* position to entry in utmp file */ 244 getutxid (utx); /* position to entry in utmp file */
122 strncpy (this->ut_id, ut_id, sizeof (this->ut_id));
123#endif 245#endif
124 246
125#ifdef HAVE_STRUCT_UTMP 247#ifdef HAVE_STRUCT_UTMP
126 strncpy (ut->ut_line, pty, sizeof (ut->ut_line)); 248 strncpy (ut->ut_line, pty, sizeof (ut->ut_line));
249# ifdef HAVE_UTMP_HOST
250 strncpy (ut->ut_host, hostname, sizeof (ut->ut_host));
251# endif
127 ut->ut_time = time (NULL); 252 ut->ut_time = time (NULL);
128# ifdef HAVE_UTMP_PID 253# ifdef HAVE_UTMP_PID
129 strncpy (ut->ut_user, (pwent && pwent->pw_name) ? pwent->pw_name : "?", 254 strncpy (ut->ut_user, name, sizeof (ut->ut_user));
130 sizeof (ut->ut_user));
131 strncpy (ut->ut_id, ut_id, sizeof (ut->ut_id)); 255 strncpy (ut->ut_id, ut_id, sizeof (ut->ut_id));
132 ut->ut_time = time (NULL);
133 ut->ut_pid = cmd_pid; 256 ut->ut_pid = cmd_pid;
134# ifdef HAVE_UTMP_HOST
135 strncpy (ut->ut_host, hostname, sizeof (ut->ut_host));
136# endif
137 ut->ut_type = USER_PROCESS; 257 ut->ut_type = USER_PROCESS;
138 pututline (ut); 258 pututline (ut);
139 endutent (); /* close the file */ 259 endutent (); /* close the file */
140 utmp_pos = 0; 260 utmp_pos = 0;
141# else 261# else
142 strncpy (ut->ut_name, (pwent && pwent->pw_name) ? pwent->pw_name : "?",
143 sizeof (ut->ut_name));
144# ifdef HAVE_UTMP_HOST
145 strncpy (ut->ut_host, hostname, sizeof (ut->ut_host)); 262 strncpy (ut->ut_name, name, sizeof (ut->ut_name));
146# endif
147# endif 263# endif
148#endif 264#endif
149 265
150#ifdef HAVE_STRUCT_UTMPX 266#ifdef HAVE_STRUCT_UTMPX
151 strncpy (utx->ut_line, pty, sizeof (utx->ut_line)); 267 strncpy (utx->ut_line, pty, sizeof (utx->ut_line));
152 strncpy (utx->ut_user, (pwent && pwent->pw_name) ? pwent->pw_name : "?", 268 strncpy (utx->ut_user, name, sizeof (utx->ut_user));
153 sizeof (utx->ut_user));
154 strncpy (utx->ut_id, ut_id, sizeof (utx->ut_id)); 269 strncpy (utx->ut_id, ut_id, sizeof (utx->ut_id));
155# if HAVE_UTMPX_SESSION 270# if HAVE_UTMPX_SESSION
156 utx->ut_session = getsid (0); 271 utx->ut_session = getsid (0);
157# endif 272# endif
158 utx->ut_tv.tv_sec = time (NULL); 273 utx->ut_tv.tv_sec = time (NULL);
… …
175 utmp_pos = 0; 290 utmp_pos = 0;
176#endif 291#endif
177 292
178#if defined(HAVE_STRUCT_UTMP) && !defined(HAVE_UTMP_PID) 293#if defined(HAVE_STRUCT_UTMP) && !defined(HAVE_UTMP_PID)
179 { 294 {
180# ifdef HAVE_TTYSLOT 295# if 1
181 int fdstdin = dup (STDIN_FILENO); 296 int fdstdin = dup (STDIN_FILENO);
182 dup2 (tty, STDIN_FILENO); 297 dup2 (tty, STDIN_FILENO);
183 298
184 i = ttyslot (); 299 i = ttyslot ();
185 if (write_bsd_utmp (i, ut)) 300 if (write_bsd_utmp (i, ut))
186 utmp_pos = i; 301 utmp_pos = i;
187 302
188 dup2 (fdstdin, STDIN_FILENO); 303 dup2 (fdstdin, STDIN_FILENO);
189 close (fdstdin); 304 close (fdstdin);
190# else
191 FILE *fd0;
192
193 if ((fd0 = fopen (TTYTAB_FILENAME, "r")) != NULL)
194 {
195 char buf[256], name[256];
196
197 buf[sizeof (buf) - 1] = '\0';
198 for (i = 1; (fgets (buf, sizeof (buf) - 1, fd0) != NULL);)
199 {
200 if (*buf == '#' || sscanf (buf, "%s", name) != 1)
201 continue;
202 if (!strcmp (ut->ut_line, name))
203 {
204 if (!write_bsd_utmp (i, ut))
205 i = 0;
206 utmp_pos = i;
207 fclose (fd0);
208 break;
209 }
210 i++;
211 }
212 fclose (fd0);
213 }
214# endif 305# endif
215 } 306 }
216#endif 307#endif
217 308
218#ifdef WTMP_SUPPORT 309#ifdef WTMP_SUPPORT
… …
331#endif 422#endif
332 423
333 cmd_pid = 0; 424 cmd_pid = 0;
334} 425}
335 426
336/* ------------------------------------------------------------------------- */
337/*
338 * Write a BSD style utmp entry
339 */
340#if defined(HAVE_STRUCT_UTMP) && !defined(HAVE_UTMP_PID)
341static int
342write_bsd_utmp (int utmp_pos, struct utmp *wu)
343{
344 int fd;
345
346 if (utmp_pos <= 0 || (fd = open (UTMP_FILE, O_WRONLY)) == -1)
347 return 0;
348
349 if (lseek (fd, (off_t) (utmp_pos * sizeof (struct utmp)), SEEK_SET) != -1)
350 write (fd, wu, sizeof (struct utmp));
351 close (fd);
352 return 1;
353}
354#endif
355
356/* ------------------------------------------------------------------------- */
357/*
358 * Update a BSD style wtmp entry
359 */
360#if defined(WTMP_SUPPORT) && !defined(HAVE_UPDWTMP) && defined(HAVE_STRUCT_UTMP)
361static void
362update_wtmp (const char *fname, const struct utmp *putmp)
363{
364 int fd, gotlock, retry;
365 struct flock lck; /* fcntl locking scheme */
366 struct stat sbuf;
367
368 if ((fd = open (fname, O_WRONLY | O_APPEND, 0)) < 0)
369 return;
370
371 lck.l_whence = SEEK_END; /* start lock at current eof */
372 lck.l_len = 0; /* end at ``largest possible eof'' */
373 lck.l_start = 0;
374 lck.l_type = F_WRLCK; /* we want a write lock */
375
376 /* attempt lock with F_SETLK; F_SETLKW would cause a deadlock! */
377 for (retry = 10, gotlock = 0; retry--;)
378 if (fcntl (fd, F_SETLK, &lck) != -1)
379 {
380 gotlock = 1;
381 break;
382 }
383 else if (errno != EAGAIN && errno != EACCES)
384 break;
385 if (!gotlock)
386 { /* give it up */
387 close (fd);
388 return;
389 }
390 if (fstat (fd, &sbuf) == 0)
391 if (write (fd, putmp, sizeof (struct utmp)) != sizeof (struct utmp))
392 ftruncate (fd, sbuf.st_size); /* remove bad writes */
393
394 lck.l_type = F_UNLCK; /* unlocking the file */
395 fcntl (fd, F_SETLK, &lck);
396 close (fd);
397}
398#endif
399
400/* ------------------------------------------------------------------------- */
401#ifdef LASTLOG_SUPPORT
402static void
403update_lastlog (const char *fname, const char *pty, const char *host)
404{
405# ifdef HAVE_STRUCT_LASTLOGX
406 struct lastlogx llx;
407# endif
408# ifdef HAVE_STRUCT_LASTLOG
409 int fd;
410 struct lastlog ll;
411# ifdef LASTLOG_IS_DIR
412 char lastlogfile[256];
413# endif
414 struct passwd *pwent;
415# endif
416
417# ifdef HAVE_STRUCT_LASTLOGX
418 memset (&llx, 0, sizeof (llx));
419 llx.ll_tv.tv_sec = time (NULL);
420 llx.ll_tv.tv_usec = 0;
421 strncpy (llx.ll_line, pty, sizeof (llx.ll_line));
422 strncpy (llx.ll_host, host, sizeof (llx.ll_host));
423 updlastlogx (LASTLOGX_FILE, getuid (), &llx);
424# endif
425
426# ifdef HAVE_STRUCT_LASTLOG
427 pwent = getpwuid (getuid ());
428 if (!pwent)
429 {
430 ptytty_warn ("no entry in password file, not updating lastlog.\n");
431 return;
432 }
433
434 memset (&ll, 0, sizeof (ll));
435 ll.ll_time = time (NULL);
436 strncpy (ll.ll_line, pty, sizeof (ll.ll_line));
437 strncpy (ll.ll_host, host, sizeof (ll.ll_host));
438# ifdef LASTLOG_IS_DIR
439 sprintf (lastlogfile, "%.*s/%.*s",
440 sizeof (lastlogfile) - sizeof (pwent->pw_name) - 2, fname,
441 sizeof (pwent->pw_name),
442 (!pwent->pw_name || pwent->pw_name[0] == '\0') ? "unknown"
443 : pwent->pw_name);
444 if ((fd = open (lastlogfile, O_WRONLY | O_CREAT, 0644)) >= 0)
445 {
446 write (fd, &ll, sizeof (ll));
447 close (fd);
448 }
449# else
450 if ((fd = open (fname, O_RDWR)) != -1)
451 {
452 if (lseek (fd, (off_t) ((long)pwent->pw_uid * sizeof (ll)),
453 SEEK_SET) != -1)
454 write (fd, &ll, sizeof (ll));
455 close (fd);
456 }
457# endif /* LASTLOG_IS_DIR */
458# endif /* HAVE_STRUCT_LASTLOG */
459}
460#endif /* LASTLOG_SUPPORT */
461
462#else 427#else
463void 428void
464ptytty_unix::login (int cmd_pid, bool login_shell, const char *hostname) 429ptytty_unix::login (int cmd_pid, bool login_shell, const char *hostname)
465{ 430{
466} 431}

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