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Commit | Line | Data |
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b75c8134 | 1 | /* |
53d55042 SK |
2 | * Alternate Getty (agetty) 'agetty' is a versatile, portable, easy to use |
3 | * replacement for getty on SunOS 4.1.x or the SAC ttymon/ttyadm/sacadm/pmadm | |
4 | * suite on Solaris and other SVR4 systems. 'agetty' was written by Wietse | |
5 | * Venema, enhanced by John DiMarco, and further enhanced by Dennis Cronin. | |
b75c8134 KZ |
6 | * |
7 | * Ported to Linux by Peter Orbaek <poe@daimi.aau.dk> | |
1683f6bf DWF |
8 | * Adopt the mingetty features for a better support |
9 | * of virtual consoles by Werner Fink <werner@suse.de> | |
b75c8134 | 10 | * |
53d55042 | 11 | * This program is freely distributable. |
b75c8134 | 12 | */ |
c32270d4 | 13 | |
6dbe3af9 KZ |
14 | #include <stdio.h> |
15 | #include <unistd.h> | |
16 | #include <stdlib.h> | |
2b6fc908 | 17 | #include <string.h> |
1961482a | 18 | #include <termios.h> |
6dbe3af9 KZ |
19 | #include <signal.h> |
20 | #include <errno.h> | |
3aa6b68f | 21 | #include <sys/ioctl.h> |
6dbe3af9 KZ |
22 | #include <sys/types.h> |
23 | #include <sys/stat.h> | |
bb280f79 | 24 | #include <sys/wait.h> |
6dbe3af9 | 25 | #include <fcntl.h> |
22853e4a | 26 | #include <stdarg.h> |
6dbe3af9 | 27 | #include <ctype.h> |
b4b919fe | 28 | #include <utmpx.h> |
6dbe3af9 | 29 | #include <getopt.h> |
22853e4a | 30 | #include <time.h> |
e61e66bd | 31 | #include <sys/socket.h> |
729def03 | 32 | #include <langinfo.h> |
3aa6b68f | 33 | #include <grp.h> |
2b945eda KZ |
34 | #include <arpa/inet.h> |
35 | #include <netdb.h> | |
36 | #include <ifaddrs.h> | |
0f283438 | 37 | #include <net/if.h> |
df73ad46 | 38 | |
8abcf290 | 39 | #include "strutils.h" |
e12c9866 | 40 | #include "all-io.h" |
7eda085c | 41 | #include "nls.h" |
e6590f06 | 42 | #include "pathnames.h" |
e5b17b31 | 43 | #include "c.h" |
1683f6bf | 44 | #include "widechar.h" |
879a7ab4 | 45 | #include "ttyutils.h" |
d689166b | 46 | #include "color-names.h" |
984a6096 | 47 | #include "env.h" |
6dbe3af9 | 48 | |
1eb16fd7 KZ |
49 | #ifdef USE_PLYMOUTH_SUPPORT |
50 | # include "plymouth-ctrl.h" | |
51 | #endif | |
52 | ||
4ebac79f SK |
53 | #ifdef HAVE_SYS_PARAM_H |
54 | # include <sys/param.h> | |
55 | #endif | |
56 | ||
c32270d4 | 57 | #if defined(__FreeBSD_kernel__) |
77835be2 | 58 | # include <pty.h> |
c43cd8f5 | 59 | # ifdef HAVE_UTMP_H |
77835be2 RM |
60 | # include <utmp.h> |
61 | # endif | |
62 | # ifdef HAVE_LIBUTIL_H | |
63 | # include <libutil.h> | |
64 | # endif | |
c32270d4 CE |
65 | #endif |
66 | ||
fd6b7a7f | 67 | #ifdef __linux__ |
0da025da | 68 | # include <sys/kd.h> |
53d55042 | 69 | # define USE_SYSLOG |
729def03 WF |
70 | # ifndef DEFAULT_VCTERM |
71 | # define DEFAULT_VCTERM "linux" | |
72 | # endif | |
fba8a535 | 73 | # if defined (__s390__) || defined (__s390x__) |
f2bcda51 WF |
74 | # define DEFAULT_TTYS0 "dumb" |
75 | # define DEFAULT_TTY32 "ibm327x" | |
fba8a535 WF |
76 | # define DEFAULT_TTYS1 "vt220" |
77 | # endif | |
729def03 WF |
78 | # ifndef DEFAULT_STERM |
79 | # define DEFAULT_STERM "vt102" | |
80 | # endif | |
4585ec0b ST |
81 | #elif defined(__GNU__) |
82 | # define USE_SYSLOG | |
83 | # ifndef DEFAULT_VCTERM | |
84 | # define DEFAULT_VCTERM "hurd" | |
85 | # endif | |
86 | # ifndef DEFAULT_STERM | |
87 | # define DEFAULT_STERM "vt102" | |
88 | # endif | |
729def03 WF |
89 | #else |
90 | # ifndef DEFAULT_VCTERM | |
91 | # define DEFAULT_VCTERM "vt100" | |
92 | # endif | |
93 | # ifndef DEFAULT_STERM | |
94 | # define DEFAULT_STERM "vt100" | |
95 | # endif | |
6dbe3af9 KZ |
96 | #endif |
97 | ||
c32270d4 CE |
98 | #ifdef __FreeBSD_kernel__ |
99 | #define USE_SYSLOG | |
100 | #endif | |
101 | ||
53d55042 | 102 | /* If USE_SYSLOG is undefined all diagnostics go to /dev/console. */ |
6dbe3af9 | 103 | #ifdef USE_SYSLOG |
53d55042 | 104 | # include <syslog.h> |
6dbe3af9 KZ |
105 | #endif |
106 | ||
b75c8134 KZ |
107 | /* |
108 | * Some heuristics to find out what environment we are in: if it is not | |
53d55042 SK |
109 | * System V, assume it is SunOS 4. The LOGIN_PROCESS is defined in System V |
110 | * utmp.h, which will select System V style getty. | |
b75c8134 | 111 | */ |
53d55042 SK |
112 | #ifdef LOGIN_PROCESS |
113 | # define SYSV_STYLE | |
6dbe3af9 KZ |
114 | #endif |
115 | ||
b75c8134 KZ |
116 | /* |
117 | * Things you may want to modify. | |
118 | * | |
119 | * If ISSUE is not defined, agetty will never display the contents of the | |
120 | * /etc/issue file. You will not want to spit out large "issue" files at the | |
121 | * wrong baud rate. Relevant for System V only. | |
122 | * | |
123 | * You may disagree with the default line-editing etc. characters defined | |
124 | * below. Note, however, that DEL cannot be used for interrupt generation | |
125 | * and for line editing at the same time. | |
126 | */ | |
6dbe3af9 | 127 | |
53d55042 | 128 | /* Displayed before the login prompt. */ |
6dbe3af9 | 129 | #ifdef SYSV_STYLE |
96cc7b0b | 130 | # define ISSUE _PATH_ISSUE |
53d55042 | 131 | # include <sys/utsname.h> |
6dbe3af9 KZ |
132 | #endif |
133 | ||
53d55042 | 134 | /* Login prompt. */ |
e85281a8 | 135 | #define LOGIN "login: " |
9aeb66dc | 136 | #define LOGIN_ARGV_MAX 16 /* Numbers of args for login */ |
6dbe3af9 | 137 | |
6443dd43 SW |
138 | /* |
139 | * agetty --reload | |
140 | */ | |
6443dd43 SW |
141 | #ifdef AGETTY_RELOAD |
142 | # include <sys/inotify.h> | |
e36deb64 SW |
143 | # include <linux/netlink.h> |
144 | # include <linux/rtnetlink.h> | |
6443dd43 SW |
145 | # define AGETTY_RELOAD_FILENAME "/run/agetty.reload" /* trigger file */ |
146 | # define AGETTY_RELOAD_FDNONE -2 /* uninitialized fd */ | |
147 | static int inotify_fd = AGETTY_RELOAD_FDNONE; | |
e36deb64 | 148 | static int netlink_fd = AGETTY_RELOAD_FDNONE; |
6443dd43 SW |
149 | #endif |
150 | ||
b75c8134 KZ |
151 | /* |
152 | * When multiple baud rates are specified on the command line, the first one | |
153 | * we will try is the first one specified. | |
154 | */ | |
6dbe3af9 KZ |
155 | #define FIRST_SPEED 0 |
156 | ||
157 | /* Storage for command-line options. */ | |
53d55042 | 158 | #define MAX_SPEED 10 /* max. nr. of baud rates */ |
6dbe3af9 KZ |
159 | |
160 | struct options { | |
bde20e1b | 161 | int flags; /* toggle switches, see below */ |
cf582859 | 162 | unsigned int timeout; /* time-out period */ |
eb8e1f9f | 163 | char *autolog; /* login the user automatically */ |
e85281a8 DWF |
164 | char *chdir; /* Chdir before the login */ |
165 | char *chroot; /* Chroot before the login */ | |
bde20e1b | 166 | char *login; /* login program */ |
eb8e1f9f | 167 | char *logopt; /* options for login program */ |
bde20e1b | 168 | char *tty; /* name of tty */ |
729def03 WF |
169 | char *vcline; /* line of virtual console */ |
170 | char *term; /* terminal type */ | |
bde20e1b WF |
171 | char *initstring; /* modem init string */ |
172 | char *issue; /* alternative issue file */ | |
cb872ac9 KZ |
173 | char *erasechars; /* string with erase chars */ |
174 | char *killchars; /* string with kill chars */ | |
b34f097e | 175 | char *osrelease; /* /etc/os-release data */ |
cf582859 | 176 | unsigned int delay; /* Sleep seconds before prompt */ |
e85281a8 | 177 | int nice; /* Run login with this priority */ |
bde20e1b | 178 | int numspeed; /* number of baud rates to try */ |
ef264c83 | 179 | int clocal; /* CLOCAL_MODE_* */ |
b9c73909 | 180 | int kbmode; /* Keyboard mode if virtual console */ |
bde20e1b | 181 | speed_t speeds[MAX_SPEED]; /* baud rates to be tried */ |
6dbe3af9 KZ |
182 | }; |
183 | ||
ef264c83 KZ |
184 | enum { |
185 | CLOCAL_MODE_AUTO = 0, | |
186 | CLOCAL_MODE_ALWAYS, | |
187 | CLOCAL_MODE_NEVER | |
188 | }; | |
189 | ||
53d55042 SK |
190 | #define F_PARSE (1<<0) /* process modem status messages */ |
191 | #define F_ISSUE (1<<1) /* display /etc/issue */ | |
192 | #define F_RTSCTS (1<<2) /* enable RTS/CTS flow control */ | |
ef264c83 | 193 | |
53d55042 SK |
194 | #define F_INITSTRING (1<<4) /* initstring is set */ |
195 | #define F_WAITCRLF (1<<5) /* wait for CR or LF */ | |
196 | #define F_CUSTISSUE (1<<6) /* give alternative issue file */ | |
197 | #define F_NOPROMPT (1<<7) /* do not ask for login name! */ | |
198 | #define F_LCUC (1<<8) /* support for *LCUC stty modes */ | |
199 | #define F_KEEPSPEED (1<<9) /* follow baud rate from kernel */ | |
200 | #define F_KEEPCFLAGS (1<<10) /* reuse c_cflags setup from kernel */ | |
bde20e1b | 201 | #define F_EIGHTBITS (1<<11) /* Assume 8bit-clean tty */ |
3aa6b68f WF |
202 | #define F_VCONSOLE (1<<12) /* This is a virtual console */ |
203 | #define F_HANGUP (1<<13) /* Do call vhangup(2) */ | |
0da025da | 204 | #define F_UTF8 (1<<14) /* We can do UTF8 */ |
eb8e1f9f | 205 | #define F_LOGINPAUSE (1<<15) /* Wait for any key before dropping login prompt */ |
e85281a8 DWF |
206 | #define F_NOCLEAR (1<<16) /* Do not clear the screen before prompting */ |
207 | #define F_NONL (1<<17) /* No newline before issue */ | |
208 | #define F_NOHOSTNAME (1<<18) /* Do not show the hostname */ | |
209 | #define F_LONGHNAME (1<<19) /* Show Full qualified hostname */ | |
36601b23 | 210 | #define F_NOHINTS (1<<20) /* Don't print hints */ |
01095ae3 | 211 | #define F_REMOTE (1<<21) /* Add '-h fakehost' to login(1) command line */ |
0da025da WF |
212 | |
213 | #define serial_tty_option(opt, flag) \ | |
214 | (((opt)->flags & (F_VCONSOLE|(flag))) == (flag)) | |
6dbe3af9 | 215 | |
fd6b7a7f | 216 | struct Speedtab { |
53d55042 | 217 | long speed; |
bde20e1b | 218 | speed_t code; |
fd6b7a7f KZ |
219 | }; |
220 | ||
1a204cd2 | 221 | static const struct Speedtab speedtab[] = { |
53d55042 SK |
222 | {50, B50}, |
223 | {75, B75}, | |
224 | {110, B110}, | |
225 | {134, B134}, | |
226 | {150, B150}, | |
227 | {200, B200}, | |
228 | {300, B300}, | |
229 | {600, B600}, | |
230 | {1200, B1200}, | |
231 | {1800, B1800}, | |
232 | {2400, B2400}, | |
233 | {4800, B4800}, | |
234 | {9600, B9600}, | |
09625c2e | 235 | #ifdef B19200 |
53d55042 | 236 | {19200, B19200}, |
09625c2e | 237 | #elif defined(EXTA) |
53d55042 | 238 | {19200, EXTA}, |
fd6b7a7f | 239 | #endif |
09625c2e JB |
240 | #ifdef B38400 |
241 | {38400, B38400}, | |
242 | #elif defined(EXTB) | |
53d55042 | 243 | {38400, EXTB}, |
fd6b7a7f KZ |
244 | #endif |
245 | #ifdef B57600 | |
53d55042 | 246 | {57600, B57600}, |
fd6b7a7f KZ |
247 | #endif |
248 | #ifdef B115200 | |
53d55042 | 249 | {115200, B115200}, |
fd6b7a7f KZ |
250 | #endif |
251 | #ifdef B230400 | |
53d55042 | 252 | {230400, B230400}, |
f28dde8e JB |
253 | #endif |
254 | #ifdef B460800 | |
255 | {460800, B460800}, | |
256 | #endif | |
257 | #ifdef B500000 | |
258 | {500000, B500000}, | |
259 | #endif | |
260 | #ifdef B576000 | |
261 | {576000, B576000}, | |
262 | #endif | |
263 | #ifdef B921600 | |
264 | {921600, B921600}, | |
265 | #endif | |
266 | #ifdef B1000000 | |
267 | {1000000, B1000000}, | |
268 | #endif | |
269 | #ifdef B1152000 | |
270 | {1152000, B1152000}, | |
271 | #endif | |
272 | #ifdef B1500000 | |
273 | {1500000, B1500000}, | |
274 | #endif | |
275 | #ifdef B2000000 | |
276 | {2000000, B2000000}, | |
277 | #endif | |
278 | #ifdef B2500000 | |
279 | {2500000, B2500000}, | |
280 | #endif | |
281 | #ifdef B3000000 | |
282 | {3000000, B3000000}, | |
283 | #endif | |
284 | #ifdef B3500000 | |
285 | {3500000, B3500000}, | |
286 | #endif | |
287 | #ifdef B4000000 | |
288 | {4000000, B4000000}, | |
fd6b7a7f | 289 | #endif |
53d55042 | 290 | {0, 0}, |
6dbe3af9 KZ |
291 | }; |
292 | ||
729def03 | 293 | static void init_special_char(char* arg, struct options *op); |
53d55042 SK |
294 | static void parse_args(int argc, char **argv, struct options *op); |
295 | static void parse_speeds(struct options *op, char *arg); | |
729def03 WF |
296 | static void update_utmp(struct options *op); |
297 | static void open_tty(char *tty, struct termios *tp, struct options *op); | |
53d55042 | 298 | static void termio_init(struct options *op, struct termios *tp); |
0da025da | 299 | static void reset_vc (const struct options *op, struct termios *tp); |
53d55042 | 300 | static void auto_baud(struct termios *tp); |
2b945eda KZ |
301 | static void output_special_char (unsigned char c, struct options *op, |
302 | struct termios *tp, FILE *fp); | |
53d55042 SK |
303 | static void do_prompt(struct options *op, struct termios *tp); |
304 | static void next_speed(struct options *op, struct termios *tp); | |
305 | static char *get_logname(struct options *op, | |
306 | struct termios *tp, struct chardata *cp); | |
307 | static void termio_final(struct options *op, | |
308 | struct termios *tp, struct chardata *cp); | |
309 | static int caps_lock(char *s); | |
bde20e1b | 310 | static speed_t bcode(char *s); |
9325dbfd | 311 | static void usage(void) __attribute__((__noreturn__)); |
763d7a87 KZ |
312 | static void log_err(const char *, ...) __attribute__((__noreturn__)) |
313 | __attribute__((__format__(printf, 1, 2))); | |
314 | static void log_warn (const char *, ...) | |
315 | __attribute__((__format__(printf, 1, 2))); | |
a694957a | 316 | static ssize_t append(char *dest, size_t len, const char *sep, const char *src); |
9aeb66dc KZ |
317 | static void check_username (const char* nm); |
318 | static void login_options_to_argv(char *argv[], int *argc, char *str, char *username); | |
6443dd43 | 319 | static void reload_agettys(void); |
6dbe3af9 | 320 | |
eb63b9b8 | 321 | /* Fake hostname for ut_host specified on command line. */ |
bde20e1b | 322 | static char *fakehost; |
eb63b9b8 | 323 | |
6dbe3af9 | 324 | #ifdef DEBUGGING |
bb280f79 | 325 | # include "closestream.h" |
46568b00 | 326 | # ifndef DEBUG_OUTPUT |
bb280f79 | 327 | # define DEBUG_OUTPUT "/dev/tty10" |
46568b00 KZ |
328 | # endif |
329 | # define debug(s) do { fprintf(dbf,s); fflush(dbf); } while (0) | |
6dbe3af9 KZ |
330 | FILE *dbf; |
331 | #else | |
46568b00 | 332 | # define debug(s) do { ; } while (0) |
efcf26f4 | 333 | #endif |
6dbe3af9 | 334 | |
53d55042 | 335 | int main(int argc, char **argv) |
6dbe3af9 | 336 | { |
9aeb66dc | 337 | char *username = NULL; /* login name, given to /bin/login */ |
eb8e1f9f WF |
338 | struct chardata chardata; /* will be set by get_logname() */ |
339 | struct termios termios; /* terminal mode bits */ | |
1a204cd2 | 340 | struct options options = { |
eb8e1f9f WF |
341 | .flags = F_ISSUE, /* show /etc/issue (SYSV_STYLE) */ |
342 | .login = _PATH_LOGIN, /* default login program */ | |
eb8e1f9f | 343 | .tty = "tty1", /* default tty line */ |
5676f365 | 344 | .issue = ISSUE /* default issue file */ |
70bedfa1 | 345 | }; |
9aeb66dc KZ |
346 | char *login_argv[LOGIN_ARGV_MAX + 1]; |
347 | int login_argc = 0; | |
3aa6b68f WF |
348 | struct sigaction sa, sa_hup, sa_quit, sa_int; |
349 | sigset_t set; | |
70bedfa1 KZ |
350 | |
351 | setlocale(LC_ALL, ""); | |
352 | bindtextdomain(PACKAGE, LOCALEDIR); | |
353 | textdomain(PACKAGE); | |
b75c8134 | 354 | |
3aa6b68f WF |
355 | /* In case vhangup(2) has to called */ |
356 | sa.sa_handler = SIG_IGN; | |
357 | sa.sa_flags = SA_RESTART; | |
358 | sigemptyset (&sa.sa_mask); | |
359 | sigaction(SIGHUP, &sa, &sa_hup); | |
360 | sigaction(SIGQUIT, &sa, &sa_quit); | |
361 | sigaction(SIGINT, &sa, &sa_int); | |
362 | ||
6dbe3af9 | 363 | #ifdef DEBUGGING |
1aba8336 | 364 | dbf = fopen(DEBUG_OUTPUT, "w"); |
bb280f79 WF |
365 | for (int i = 1; i < argc; i++) { |
366 | if (i > 1) | |
367 | debug(" "); | |
53d55042 | 368 | debug(argv[i]); |
bb280f79 WF |
369 | } |
370 | debug("\n"); | |
53d55042 | 371 | #endif /* DEBUGGING */ |
6dbe3af9 | 372 | |
70bedfa1 | 373 | /* Parse command-line arguments. */ |
70bedfa1 | 374 | parse_args(argc, argv, &options); |
6dbe3af9 | 375 | |
9aeb66dc KZ |
376 | login_argv[login_argc++] = options.login; /* set login program name */ |
377 | ||
70bedfa1 | 378 | /* Update the utmp file. */ |
6dbe3af9 | 379 | #ifdef SYSV_STYLE |
729def03 | 380 | update_utmp(&options); |
6dbe3af9 | 381 | #endif |
e85281a8 DWF |
382 | if (options.delay) |
383 | sleep(options.delay); | |
384 | ||
70bedfa1 | 385 | debug("calling open_tty\n"); |
53d55042 | 386 | |
70bedfa1 | 387 | /* Open the tty as standard { input, output, error }. */ |
729def03 | 388 | open_tty(options.tty, &termios, &options); |
70bedfa1 | 389 | |
3aa6b68f WF |
390 | /* Unmask SIGHUP if inherited */ |
391 | sigemptyset(&set); | |
392 | sigaddset(&set, SIGHUP); | |
393 | sigprocmask(SIG_UNBLOCK, &set, NULL); | |
394 | sigaction(SIGHUP, &sa_hup, NULL); | |
395 | ||
70bedfa1 | 396 | tcsetpgrp(STDIN_FILENO, getpid()); |
8410cdd3 | 397 | |
9e930041 | 398 | /* Default is to follow the current line speed and then default to 9600 */ |
914047b4 | 399 | if ((options.flags & F_VCONSOLE) == 0 && options.numspeed == 0) { |
8410cdd3 | 400 | options.speeds[options.numspeed++] = bcode("9600"); |
3c5ee57c | 401 | options.flags |= F_KEEPSPEED; |
914047b4 | 402 | } |
8410cdd3 | 403 | |
70bedfa1 KZ |
404 | /* Initialize the termios settings (raw mode, eight-bit, blocking i/o). */ |
405 | debug("calling termio_init\n"); | |
53d55042 | 406 | termio_init(&options, &termios); |
70bedfa1 | 407 | |
53d55042 | 408 | /* Write the modem init string and DO NOT flush the buffers. */ |
eb8e1f9f WF |
409 | if (serial_tty_option(&options, F_INITSTRING) && |
410 | options.initstring && *options.initstring != '\0') { | |
70bedfa1 | 411 | debug("writing init string\n"); |
729def03 | 412 | write_all(STDOUT_FILENO, options.initstring, |
3aa6b68f | 413 | strlen(options.initstring)); |
70bedfa1 KZ |
414 | } |
415 | ||
714cff30 KZ |
416 | if (options.flags & F_VCONSOLE || options.clocal != CLOCAL_MODE_ALWAYS) |
417 | /* Go to blocking mode unless -L is specified, this change | |
418 | * affects stdout, stdin and stderr as all the file descriptors | |
419 | * are created by dup(). */ | |
70bedfa1 | 420 | fcntl(STDOUT_FILENO, F_SETFL, |
53d55042 | 421 | fcntl(STDOUT_FILENO, F_GETFL, 0) & ~O_NONBLOCK); |
70bedfa1 KZ |
422 | |
423 | /* Optionally detect the baud rate from the modem status message. */ | |
424 | debug("before autobaud\n"); | |
0da025da | 425 | if (serial_tty_option(&options, F_PARSE)) |
70bedfa1 KZ |
426 | auto_baud(&termios); |
427 | ||
428 | /* Set the optional timer. */ | |
429 | if (options.timeout) | |
cf582859 | 430 | alarm(options.timeout); |
70bedfa1 | 431 | |
53d55042 | 432 | /* Optionally wait for CR or LF before writing /etc/issue */ |
0da025da | 433 | if (serial_tty_option(&options, F_WAITCRLF)) { |
70bedfa1 KZ |
434 | char ch; |
435 | ||
436 | debug("waiting for cr-lf\n"); | |
53d55042 SK |
437 | while (read(STDIN_FILENO, &ch, 1) == 1) { |
438 | /* Strip "parity bit". */ | |
439 | ch &= 0x7f; | |
fd6b7a7f | 440 | #ifdef DEBUGGING |
70bedfa1 | 441 | fprintf(dbf, "read %c\n", ch); |
fd6b7a7f | 442 | #endif |
53d55042 SK |
443 | if (ch == '\n' || ch == '\r') |
444 | break; | |
70bedfa1 | 445 | } |
726f69e2 | 446 | } |
726f69e2 | 447 | |
f5664477 | 448 | INIT_CHARDATA(&chardata); |
933956cb KZ |
449 | |
450 | if (options.autolog) { | |
451 | debug("doing auto login\n"); | |
452 | username = options.autolog; | |
453 | } | |
454 | ||
1683f6bf | 455 | if ((options.flags & F_NOPROMPT) == 0) { |
eb8e1f9f | 456 | if (options.autolog) { |
933956cb | 457 | /* Autologin prompt */ |
eb8e1f9f | 458 | do_prompt(&options, &termios); |
8c219bf4 | 459 | printf(_("%s%s (automatic login)\n"), LOGIN, options.autolog); |
eb8e1f9f WF |
460 | } else { |
461 | /* Read the login name. */ | |
462 | debug("reading login name\n"); | |
9aeb66dc | 463 | while ((username = |
f8bd089b | 464 | get_logname(&options, &termios, &chardata)) == NULL) |
8410cdd3 | 465 | if ((options.flags & F_VCONSOLE) == 0 && options.numspeed) |
eb8e1f9f WF |
466 | next_speed(&options, &termios); |
467 | } | |
70bedfa1 | 468 | } |
6dbe3af9 | 469 | |
70bedfa1 | 470 | /* Disable timer. */ |
70bedfa1 | 471 | if (options.timeout) |
53d55042 | 472 | alarm(0); |
6dbe3af9 | 473 | |
0da025da WF |
474 | if ((options.flags & F_VCONSOLE) == 0) { |
475 | /* Finalize the termios settings. */ | |
476 | termio_final(&options, &termios, &chardata); | |
6dbe3af9 | 477 | |
0da025da WF |
478 | /* Now the newline character should be properly written. */ |
479 | write_all(STDOUT_FILENO, "\r\n", 2); | |
480 | } | |
6dbe3af9 | 481 | |
763d7a87 KZ |
482 | sigaction(SIGQUIT, &sa_quit, NULL); |
483 | sigaction(SIGINT, &sa_int, NULL); | |
3aa6b68f | 484 | |
9aeb66dc KZ |
485 | if (username) |
486 | check_username(username); | |
487 | ||
488 | if (options.logopt) { | |
489 | /* | |
490 | * The --login-options completely overwrites the default | |
491 | * way how agetty composes login(1) command line. | |
492 | */ | |
493 | login_options_to_argv(login_argv, &login_argc, | |
494 | options.logopt, username); | |
01095ae3 | 495 | } else { |
343cc275 SK |
496 | if (options.flags & F_REMOTE) { |
497 | if (fakehost) { | |
498 | login_argv[login_argc++] = "-h"; | |
499 | login_argv[login_argc++] = fakehost; | |
500 | } else if (options.flags & F_NOHOSTNAME) | |
501 | login_argv[login_argc++] = "-H"; | |
01095ae3 KZ |
502 | } |
503 | if (username) { | |
504 | if (options.autolog) | |
505 | login_argv[login_argc++] = "-f"; | |
506 | else | |
507 | login_argv[login_argc++] = "--"; | |
508 | login_argv[login_argc++] = username; | |
509 | } | |
9aeb66dc | 510 | } |
eb8e1f9f | 511 | |
9aeb66dc | 512 | login_argv[login_argc] = NULL; /* last login argv */ |
eb8e1f9f | 513 | |
74ce680a SK |
514 | if (options.chroot && chroot(options.chroot) < 0) |
515 | log_err(_("%s: can't change root directory %s: %m"), | |
516 | options.tty, options.chroot); | |
517 | if (options.chdir && chdir(options.chdir) < 0) | |
518 | log_err(_("%s: can't change working directory %s: %m"), | |
519 | options.tty, options.chdir); | |
520 | if (options.nice && nice(options.nice) < 0) | |
521 | log_warn(_("%s: can't change process priority: %m"), | |
522 | options.tty); | |
523 | ||
f614b73c | 524 | free(options.osrelease); |
1aba8336 | 525 | #ifdef DEBUGGING |
1aba8336 SK |
526 | if (close_stream(dbf) != 0) |
527 | log_err("write failed: %s", DEBUG_OUTPUT); | |
528 | #endif | |
529 | ||
70bedfa1 | 530 | /* Let the login program take care of password validation. */ |
9aeb66dc KZ |
531 | execv(options.login, login_argv); |
532 | log_err(_("%s: can't exec %s: %m"), options.tty, login_argv[0]); | |
533 | } | |
534 | ||
535 | /* | |
536 | * Returns : @str if \u not found | |
537 | * : @username if @str equal to "\u" | |
538 | * : newly allocated string if \u mixed with something other | |
539 | */ | |
540 | static char *replace_u(char *str, char *username) | |
541 | { | |
542 | char *entry = NULL, *p = str; | |
543 | size_t usz = username ? strlen(username) : 0; | |
544 | ||
545 | while (*p) { | |
546 | size_t sz; | |
547 | char *tp, *old = entry; | |
548 | ||
549 | if (memcmp(p, "\\u", 2)) { | |
550 | p++; | |
551 | continue; /* no \u */ | |
552 | } | |
553 | sz = strlen(str); | |
554 | ||
3797cf25 | 555 | if (p == str && sz == 2) { |
9aeb66dc | 556 | /* 'str' contains only '\u' */ |
3797cf25 | 557 | free(old); |
9aeb66dc | 558 | return username; |
3797cf25 | 559 | } |
9aeb66dc KZ |
560 | |
561 | tp = entry = malloc(sz + usz); | |
562 | if (!tp) | |
563 | log_err(_("failed to allocate memory: %m")); | |
564 | ||
565 | if (p != str) { | |
9e930041 | 566 | /* copy chars before \u */ |
9aeb66dc KZ |
567 | memcpy(tp, str, p - str); |
568 | tp += p - str; | |
569 | } | |
570 | if (usz) { | |
571 | /* copy username */ | |
572 | memcpy(tp, username, usz); | |
573 | tp += usz; | |
574 | } | |
575 | if (*(p + 2)) | |
576 | /* copy chars after \u + \0 */ | |
577 | memcpy(tp, p + 2, sz - (p - str) - 1); | |
578 | else | |
579 | *tp = '\0'; | |
580 | ||
581 | p = tp; | |
582 | str = entry; | |
583 | free(old); | |
584 | } | |
585 | ||
586 | return entry ? entry : str; | |
587 | } | |
588 | ||
589 | static void login_options_to_argv(char *argv[], int *argc, | |
590 | char *str, char *username) | |
591 | { | |
592 | char *p; | |
593 | int i = *argc; | |
594 | ||
595 | while (str && isspace(*str)) | |
596 | str++; | |
597 | p = str; | |
598 | ||
599 | while (p && *p && i < LOGIN_ARGV_MAX) { | |
600 | if (isspace(*p)) { | |
601 | *p = '\0'; | |
602 | while (isspace(*++p)) | |
603 | ; | |
604 | if (*p) { | |
605 | argv[i++] = replace_u(str, username); | |
606 | str = p; | |
607 | } | |
608 | } else | |
609 | p++; | |
610 | } | |
611 | if (str && *str && i < LOGIN_ARGV_MAX) | |
612 | argv[i++] = replace_u(str, username); | |
613 | *argc = i; | |
6dbe3af9 KZ |
614 | } |
615 | ||
f2bcda51 WF |
616 | #define is_speed(str) (strlen((str)) == strspn((str), "0123456789,")) |
617 | ||
53d55042 | 618 | /* Parse command-line arguments. */ |
bde20e1b | 619 | static void parse_args(int argc, char **argv, struct options *op) |
6dbe3af9 | 620 | { |
53d55042 | 621 | int c; |
70bedfa1 KZ |
622 | |
623 | enum { | |
624 | VERSION_OPTION = CHAR_MAX + 1, | |
36601b23 | 625 | NOHINTS_OPTION, |
e85281a8 DWF |
626 | NOHOSTNAME_OPTION, |
627 | LONGHOSTNAME_OPTION, | |
cb872ac9 KZ |
628 | HELP_OPTION, |
629 | ERASE_CHARS_OPTION, | |
630 | KILL_CHARS_OPTION, | |
6443dd43 | 631 | RELOAD_OPTION, |
70bedfa1 | 632 | }; |
3aa6b68f | 633 | const struct option longopts[] = { |
87918040 SK |
634 | { "8bits", no_argument, NULL, '8' }, |
635 | { "autologin", required_argument, NULL, 'a' }, | |
636 | { "noreset", no_argument, NULL, 'c' }, | |
637 | { "chdir", required_argument, NULL, 'C' }, | |
638 | { "delay", required_argument, NULL, 'd' }, | |
639 | { "remote", no_argument, NULL, 'E' }, | |
640 | { "issue-file", required_argument, NULL, 'f' }, | |
641 | { "flow-control", no_argument, NULL, 'h' }, | |
642 | { "host", required_argument, NULL, 'H' }, | |
643 | { "noissue", no_argument, NULL, 'i' }, | |
644 | { "init-string", required_argument, NULL, 'I' }, | |
645 | { "noclear", no_argument, NULL, 'J' }, | |
646 | { "login-program", required_argument, NULL, 'l' }, | |
647 | { "local-line", optional_argument, NULL, 'L' }, | |
648 | { "extract-baud", no_argument, NULL, 'm' }, | |
649 | { "skip-login", no_argument, NULL, 'n' }, | |
650 | { "nonewline", no_argument, NULL, 'N' }, | |
651 | { "login-options", required_argument, NULL, 'o' }, | |
652 | { "login-pause", no_argument, NULL, 'p' }, | |
653 | { "nice", required_argument, NULL, 'P' }, | |
654 | { "chroot", required_argument, NULL, 'r' }, | |
655 | { "hangup", no_argument, NULL, 'R' }, | |
656 | { "keep-baud", no_argument, NULL, 's' }, | |
657 | { "timeout", required_argument, NULL, 't' }, | |
658 | { "detect-case", no_argument, NULL, 'U' }, | |
659 | { "wait-cr", no_argument, NULL, 'w' }, | |
660 | { "nohints", no_argument, NULL, NOHINTS_OPTION }, | |
661 | { "nohostname", no_argument, NULL, NOHOSTNAME_OPTION }, | |
662 | { "long-hostname", no_argument, NULL, LONGHOSTNAME_OPTION }, | |
663 | { "reload", no_argument, NULL, RELOAD_OPTION }, | |
664 | { "version", no_argument, NULL, VERSION_OPTION }, | |
665 | { "help", no_argument, NULL, HELP_OPTION }, | |
666 | { "erase-chars", required_argument, NULL, ERASE_CHARS_OPTION }, | |
667 | { "kill-chars", required_argument, NULL, KILL_CHARS_OPTION }, | |
668 | { NULL, 0, NULL, 0 } | |
70bedfa1 KZ |
669 | }; |
670 | ||
763d7a87 | 671 | while ((c = getopt_long(argc, argv, |
6f964206 | 672 | "8a:cC:d:Ef:hH:iI:Jl:L::mnNo:pP:r:Rst:Uw", longopts, |
53d55042 | 673 | NULL)) != -1) { |
70bedfa1 KZ |
674 | switch (c) { |
675 | case '8': | |
bde20e1b | 676 | op->flags |= F_EIGHTBITS; |
70bedfa1 | 677 | break; |
eb8e1f9f WF |
678 | case 'a': |
679 | op->autolog = optarg; | |
680 | break; | |
70bedfa1 KZ |
681 | case 'c': |
682 | op->flags |= F_KEEPCFLAGS; | |
683 | break; | |
e85281a8 DWF |
684 | case 'C': |
685 | op->chdir = optarg; | |
686 | break; | |
687 | case 'd': | |
cf582859 | 688 | op->delay = strtou32_or_err(optarg, _("invalid delay argument")); |
e85281a8 | 689 | break; |
01095ae3 KZ |
690 | case 'E': |
691 | op->flags |= F_REMOTE; | |
692 | break; | |
53d55042 | 693 | case 'f': |
70bedfa1 KZ |
694 | op->flags |= F_CUSTISSUE; |
695 | op->issue = optarg; | |
696 | break; | |
53d55042 | 697 | case 'h': |
70bedfa1 KZ |
698 | op->flags |= F_RTSCTS; |
699 | break; | |
53d55042 | 700 | case 'H': |
70bedfa1 KZ |
701 | fakehost = optarg; |
702 | break; | |
53d55042 | 703 | case 'i': |
70bedfa1 KZ |
704 | op->flags &= ~F_ISSUE; |
705 | break; | |
706 | case 'I': | |
729def03 WF |
707 | init_special_char(optarg, op); |
708 | op->flags |= F_INITSTRING; | |
709 | break; | |
e85281a8 DWF |
710 | case 'J': |
711 | op->flags |= F_NOCLEAR; | |
712 | break; | |
70bedfa1 | 713 | case 'l': |
53d55042 | 714 | op->login = optarg; |
70bedfa1 | 715 | break; |
53d55042 | 716 | case 'L': |
ef264c83 KZ |
717 | /* -L and -L=always have the same meaning */ |
718 | op->clocal = CLOCAL_MODE_ALWAYS; | |
719 | if (optarg) { | |
720 | if (strcmp(optarg, "=always") == 0) | |
721 | op->clocal = CLOCAL_MODE_ALWAYS; | |
722 | else if (strcmp(optarg, "=never") == 0) | |
723 | op->clocal = CLOCAL_MODE_NEVER; | |
724 | else if (strcmp(optarg, "=auto") == 0) | |
725 | op->clocal = CLOCAL_MODE_AUTO; | |
726 | else | |
38ae77d7 | 727 | log_err(_("invalid argument of --local-line")); |
ef264c83 | 728 | } |
70bedfa1 | 729 | break; |
53d55042 | 730 | case 'm': |
70bedfa1 KZ |
731 | op->flags |= F_PARSE; |
732 | break; | |
733 | case 'n': | |
734 | op->flags |= F_NOPROMPT; | |
735 | break; | |
6c77c7fa BR |
736 | case 'N': |
737 | op->flags |= F_NONL; | |
738 | break; | |
eb8e1f9f WF |
739 | case 'o': |
740 | op->logopt = optarg; | |
741 | break; | |
742 | case 'p': | |
743 | op->flags |= F_LOGINPAUSE; | |
744 | break; | |
e85281a8 | 745 | case 'P': |
cf582859 | 746 | op->nice = strtos32_or_err(optarg, _("invalid nice argument")); |
e85281a8 DWF |
747 | break; |
748 | case 'r': | |
749 | op->chroot = optarg; | |
750 | break; | |
3aa6b68f WF |
751 | case 'R': |
752 | op->flags |= F_HANGUP; | |
753 | break; | |
70bedfa1 | 754 | case 's': |
53d55042 | 755 | op->flags |= F_KEEPSPEED; |
70bedfa1 | 756 | break; |
53d55042 | 757 | case 't': |
cf582859 | 758 | op->timeout = strtou32_or_err(optarg, _("invalid timeout argument")); |
70bedfa1 KZ |
759 | break; |
760 | case 'U': | |
761 | op->flags |= F_LCUC; | |
762 | break; | |
763 | case 'w': | |
764 | op->flags |= F_WAITCRLF; | |
765 | break; | |
36601b23 KZ |
766 | case NOHINTS_OPTION: |
767 | op->flags |= F_NOHINTS; | |
768 | break; | |
e85281a8 DWF |
769 | case NOHOSTNAME_OPTION: |
770 | op->flags |= F_NOHOSTNAME; | |
771 | break; | |
772 | case LONGHOSTNAME_OPTION: | |
773 | op->flags |= F_LONGHNAME; | |
774 | break; | |
cb872ac9 KZ |
775 | case ERASE_CHARS_OPTION: |
776 | op->erasechars = optarg; | |
777 | break; | |
778 | case KILL_CHARS_OPTION: | |
779 | op->killchars = optarg; | |
780 | break; | |
6443dd43 SW |
781 | case RELOAD_OPTION: |
782 | reload_agettys(); | |
783 | exit(EXIT_SUCCESS); | |
70bedfa1 | 784 | case VERSION_OPTION: |
f6277500 | 785 | printf(UTIL_LINUX_VERSION); |
70bedfa1 KZ |
786 | exit(EXIT_SUCCESS); |
787 | case HELP_OPTION: | |
9325dbfd | 788 | usage(); |
70bedfa1 | 789 | default: |
9325dbfd | 790 | errtryhelp(EXIT_FAILURE); |
726f69e2 | 791 | } |
6dbe3af9 | 792 | } |
70bedfa1 KZ |
793 | |
794 | debug("after getopt loop\n"); | |
795 | ||
729def03 | 796 | if (argc < optind + 1) { |
bde20e1b | 797 | log_warn(_("not enough arguments")); |
9325dbfd | 798 | warn(_("not enough arguments")); |
70bedfa1 KZ |
799 | } |
800 | ||
729def03 | 801 | /* Accept "tty", "baudrate tty", and "tty baudrate". */ |
f2bcda51 | 802 | if (is_speed(argv[optind])) { |
53d55042 SK |
803 | /* Assume BSD style speed. */ |
804 | parse_speeds(op, argv[optind++]); | |
729def03 | 805 | if (argc < optind + 1) { |
9325dbfd | 806 | log_warn(_("not enough arguments")); |
729def03 | 807 | warn(_("not enough arguments")); |
729def03 WF |
808 | } |
809 | op->tty = argv[optind++]; | |
70bedfa1 | 810 | } else { |
53d55042 | 811 | op->tty = argv[optind++]; |
729def03 | 812 | if (argc > optind) { |
14da9b1f KZ |
813 | char *v = argv[optind]; |
814 | if (is_speed(v)) { | |
729def03 | 815 | parse_speeds(op, v); |
14da9b1f KZ |
816 | optind++; |
817 | } | |
729def03 | 818 | } |
70bedfa1 KZ |
819 | } |
820 | ||
729def03 WF |
821 | /* On virtual console remember the line which is used for */ |
822 | if (strncmp(op->tty, "tty", 3) == 0 && | |
823 | strspn(op->tty + 3, "0123456789") == strlen(op->tty+3)) | |
824 | op->vcline = op->tty+3; | |
825 | ||
70bedfa1 | 826 | if (argc > optind && argv[optind]) |
729def03 | 827 | op->term = argv[optind]; |
6dbe3af9 | 828 | |
66ee8158 | 829 | #ifdef DO_DEVFS_FIDDLING |
70bedfa1 | 830 | /* |
53d55042 | 831 | * Some devfs junk, following Goswin Brederlow: |
70bedfa1 KZ |
832 | * turn ttyS<n> into tts/<n> |
833 | * turn tty<n> into vc/<n> | |
53d55042 | 834 | * http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=72241 |
70bedfa1 KZ |
835 | */ |
836 | if (op->tty && strlen(op->tty) < 90) { | |
837 | char dev_name[100]; | |
838 | struct stat st; | |
839 | ||
840 | if (strncmp(op->tty, "ttyS", 4) == 0) { | |
841 | strcpy(dev_name, "/dev/"); | |
842 | strcat(dev_name, op->tty); | |
843 | if (stat(dev_name, &st) < 0) { | |
844 | strcpy(dev_name, "/dev/tts/"); | |
845 | strcat(dev_name, op->tty + 4); | |
ca8e91a4 KZ |
846 | if (stat(dev_name, &st) == 0) { |
847 | op->tty = strdup(dev_name + 5); | |
848 | if (!op->tty) | |
849 | log_err(_("failed to allocate memory: %m")); | |
850 | } | |
70bedfa1 KZ |
851 | } |
852 | } else if (strncmp(op->tty, "tty", 3) == 0) { | |
853 | strcpy(dev_name, "/dev/"); | |
854 | strncat(dev_name, op->tty, 90); | |
855 | if (stat(dev_name, &st) < 0) { | |
856 | strcpy(dev_name, "/dev/vc/"); | |
857 | strcat(dev_name, op->tty + 3); | |
ca8e91a4 KZ |
858 | if (stat(dev_name, &st) == 0) { |
859 | op->tty = strdup(dev_name + 5); | |
860 | if (!op->tty) | |
861 | log_err(_("failed to allocate memory: %m")); | |
862 | } | |
70bedfa1 KZ |
863 | } |
864 | } | |
865 | } | |
53d55042 | 866 | #endif /* DO_DEVFS_FIDDLING */ |
66ee8158 | 867 | |
70bedfa1 | 868 | debug("exiting parseargs\n"); |
6dbe3af9 KZ |
869 | } |
870 | ||
53d55042 | 871 | /* Parse alternate baud rates. */ |
bde20e1b | 872 | static void parse_speeds(struct options *op, char *arg) |
6dbe3af9 | 873 | { |
53d55042 | 874 | char *cp; |
3383b2f5 | 875 | char *str = strdup(arg); |
6dbe3af9 | 876 | |
3383b2f5 KZ |
877 | if (!str) |
878 | log_err(_("failed to allocate memory: %m")); | |
879 | ||
880 | debug("entered parse_speeds:\n"); | |
881 | for (cp = strtok(str, ","); cp != NULL; cp = strtok((char *)0, ",")) { | |
70bedfa1 | 882 | if ((op->speeds[op->numspeed++] = bcode(cp)) <= 0) |
bde20e1b | 883 | log_err(_("bad speed: %s"), cp); |
70bedfa1 | 884 | if (op->numspeed >= MAX_SPEED) |
bde20e1b | 885 | log_err(_("too many alternate speeds")); |
70bedfa1 KZ |
886 | } |
887 | debug("exiting parsespeeds\n"); | |
3383b2f5 | 888 | free(str); |
6dbe3af9 KZ |
889 | } |
890 | ||
891 | #ifdef SYSV_STYLE | |
892 | ||
53d55042 | 893 | /* Update our utmp entry. */ |
729def03 | 894 | static void update_utmp(struct options *op) |
6dbe3af9 | 895 | { |
b4b919fe | 896 | struct utmpx ut; |
53d55042 | 897 | time_t t; |
729def03 WF |
898 | pid_t pid = getpid(); |
899 | pid_t sid = getsid(0); | |
900 | char *vcline = op->vcline; | |
901 | char *line = op->tty; | |
b4b919fe | 902 | struct utmpx *utp; |
70bedfa1 KZ |
903 | |
904 | /* | |
905 | * The utmp file holds miscellaneous information about things started by | |
906 | * /sbin/init and other system-related events. Our purpose is to update | |
907 | * the utmp entry for the current process, in particular the process type | |
908 | * and the tty line we are listening to. Return successfully only if the | |
909 | * utmp file can be opened for update, and if we are able to find our | |
910 | * entry in the utmp file. | |
911 | */ | |
b4b919fe RM |
912 | utmpxname(_PATH_UTMP); |
913 | setutxent(); | |
70bedfa1 | 914 | |
53d55042 | 915 | /* |
729def03 | 916 | * Find my pid in utmp. |
53d55042 SK |
917 | * |
918 | * FIXME: Earlier (when was that?) code here tested only utp->ut_type != | |
919 | * INIT_PROCESS, so maybe the >= here should be >. | |
920 | * | |
921 | * FIXME: The present code is taken from login.c, so if this is changed, | |
922 | * maybe login has to be changed as well (is this true?). | |
923 | */ | |
b4b919fe | 924 | while ((utp = getutxent())) |
729def03 | 925 | if (utp->ut_pid == pid |
70bedfa1 KZ |
926 | && utp->ut_type >= INIT_PROCESS |
927 | && utp->ut_type <= DEAD_PROCESS) | |
928 | break; | |
929 | ||
930 | if (utp) { | |
931 | memcpy(&ut, utp, sizeof(ut)); | |
932 | } else { | |
53d55042 | 933 | /* Some inits do not initialize utmp. */ |
70bedfa1 | 934 | memset(&ut, 0, sizeof(ut)); |
729def03 WF |
935 | if (vcline && *vcline) |
936 | /* Standard virtual console devices */ | |
763d7a87 | 937 | strncpy(ut.ut_id, vcline, sizeof(ut.ut_id)); |
729def03 WF |
938 | else { |
939 | size_t len = strlen(line); | |
940 | char * ptr; | |
763d7a87 KZ |
941 | if (len >= sizeof(ut.ut_id)) |
942 | ptr = line + len - sizeof(ut.ut_id); | |
729def03 WF |
943 | else |
944 | ptr = line; | |
763d7a87 | 945 | strncpy(ut.ut_id, ptr, sizeof(ut.ut_id)); |
729def03 | 946 | } |
70bedfa1 KZ |
947 | } |
948 | ||
949 | strncpy(ut.ut_user, "LOGIN", sizeof(ut.ut_user)); | |
950 | strncpy(ut.ut_line, line, sizeof(ut.ut_line)); | |
951 | if (fakehost) | |
952 | strncpy(ut.ut_host, fakehost, sizeof(ut.ut_host)); | |
953 | time(&t); | |
cfa7fe89 | 954 | ut.ut_tv.tv_sec = t; |
70bedfa1 | 955 | ut.ut_type = LOGIN_PROCESS; |
729def03 WF |
956 | ut.ut_pid = pid; |
957 | ut.ut_session = sid; | |
70bedfa1 | 958 | |
b4b919fe RM |
959 | pututxline(&ut); |
960 | endutxent(); | |
70bedfa1 | 961 | |
b4b919fe | 962 | updwtmpx(_PATH_WTMP, &ut); |
6dbe3af9 KZ |
963 | } |
964 | ||
53d55042 | 965 | #endif /* SYSV_STYLE */ |
6dbe3af9 | 966 | |
53d55042 | 967 | /* Set up tty as stdin, stdout & stderr. */ |
729def03 | 968 | static void open_tty(char *tty, struct termios *tp, struct options *op) |
6dbe3af9 | 969 | { |
3aa6b68f | 970 | const pid_t pid = getpid(); |
b9c73909 | 971 | int closed = 0; |
88e0f3df ST |
972 | #ifndef KDGKBMODE |
973 | int serial; | |
974 | #endif | |
6dbe3af9 | 975 | |
3aa6b68f WF |
976 | /* Set up new standard input, unless we are given an already opened port. */ |
977 | ||
978 | if (strcmp(tty, "-") != 0) { | |
979 | char buf[PATH_MAX+1]; | |
980 | struct group *gr = NULL; | |
70bedfa1 | 981 | struct stat st; |
3aa6b68f WF |
982 | int fd, len; |
983 | pid_t tid; | |
984 | gid_t gid = 0; | |
985 | ||
986 | /* Use tty group if available */ | |
987 | if ((gr = getgrnam("tty"))) | |
988 | gid = gr->gr_gid; | |
989 | ||
06fa5817 YK |
990 | len = snprintf(buf, sizeof(buf), "/dev/%s", tty); |
991 | if (len < 0 || (size_t)len >= sizeof(buf)) | |
3aa6b68f WF |
992 | log_err(_("/dev/%s: cannot open as standard input: %m"), tty); |
993 | ||
c3a9f86f SK |
994 | /* Open the tty as standard input. */ |
995 | if ((fd = open(buf, O_RDWR|O_NOCTTY|O_NONBLOCK, 0)) < 0) | |
996 | log_err(_("/dev/%s: cannot open as standard input: %m"), tty); | |
997 | ||
3aa6b68f WF |
998 | /* |
999 | * There is always a race between this reset and the call to | |
1000 | * vhangup() that s.o. can use to get access to your tty. | |
1001 | * Linux login(1) will change tty permissions. Use root owner and group | |
1002 | * with permission -rw------- for the period between getty and login. | |
1003 | */ | |
c3a9f86f | 1004 | if (fchown(fd, 0, gid) || fchmod(fd, (gid ? 0620 : 0600))) { |
3aa6b68f WF |
1005 | if (errno == EROFS) |
1006 | log_warn("%s: %m", buf); | |
1007 | else | |
1008 | log_err("%s: %m", buf); | |
1009 | } | |
6dbe3af9 | 1010 | |
3aa6b68f | 1011 | /* Sanity checks... */ |
3aa6b68f | 1012 | if (fstat(fd, &st) < 0) |
763d7a87 | 1013 | log_err("%s: %m", buf); |
70bedfa1 | 1014 | if ((st.st_mode & S_IFMT) != S_IFCHR) |
bde20e1b | 1015 | log_err(_("/dev/%s: not a character device"), tty); |
c6b35139 KZ |
1016 | if (!isatty(fd)) |
1017 | log_err(_("/dev/%s: not a tty"), tty); | |
6dbe3af9 | 1018 | |
3aa6b68f | 1019 | if (((tid = tcgetsid(fd)) < 0) || (pid != tid)) { |
763d7a87 | 1020 | if (ioctl(fd, TIOCSCTTY, 1) == -1) |
8c219bf4 | 1021 | log_warn(_("/dev/%s: cannot get controlling tty: %m"), tty); |
3aa6b68f WF |
1022 | } |
1023 | ||
783b08fc KZ |
1024 | close(STDIN_FILENO); |
1025 | errno = 0; | |
1026 | ||
3aa6b68f | 1027 | if (op->flags & F_HANGUP) { |
783b08fc KZ |
1028 | |
1029 | if (ioctl(fd, TIOCNOTTY)) | |
1030 | debug("TIOCNOTTY ioctl failed\n"); | |
1031 | ||
3aa6b68f | 1032 | /* |
9e930041 | 1033 | * Let's close all file descriptors before vhangup |
783b08fc | 1034 | * https://lkml.org/lkml/2012/6/5/145 |
3aa6b68f | 1035 | */ |
783b08fc KZ |
1036 | close(fd); |
1037 | close(STDOUT_FILENO); | |
1038 | close(STDERR_FILENO); | |
1039 | errno = 0; | |
1040 | closed = 1; | |
1041 | ||
3aa6b68f | 1042 | if (vhangup()) |
8c219bf4 | 1043 | log_err(_("/dev/%s: vhangup() failed: %m"), tty); |
783b08fc KZ |
1044 | } else |
1045 | close(fd); | |
6dbe3af9 | 1046 | |
70bedfa1 | 1047 | debug("open(2)\n"); |
3aa6b68f WF |
1048 | if (open(buf, O_RDWR|O_NOCTTY|O_NONBLOCK, 0) != 0) |
1049 | log_err(_("/dev/%s: cannot open as standard input: %m"), tty); | |
783b08fc | 1050 | |
3aa6b68f | 1051 | if (((tid = tcgetsid(STDIN_FILENO)) < 0) || (pid != tid)) { |
763d7a87 | 1052 | if (ioctl(STDIN_FILENO, TIOCSCTTY, 1) == -1) |
8c219bf4 | 1053 | log_warn(_("/dev/%s: cannot get controlling tty: %m"), tty); |
3aa6b68f WF |
1054 | } |
1055 | ||
70bedfa1 | 1056 | } else { |
3aa6b68f | 1057 | |
70bedfa1 KZ |
1058 | /* |
1059 | * Standard input should already be connected to an open port. Make | |
1060 | * sure it is open for read/write. | |
1061 | */ | |
3aa6b68f | 1062 | |
70bedfa1 | 1063 | if ((fcntl(STDIN_FILENO, F_GETFL, 0) & O_RDWR) != O_RDWR) |
bde20e1b | 1064 | log_err(_("%s: not open for read/write"), tty); |
3aa6b68f | 1065 | |
70bedfa1 KZ |
1066 | } |
1067 | ||
3aa6b68f | 1068 | if (tcsetpgrp(STDIN_FILENO, pid)) |
8c219bf4 | 1069 | log_warn(_("/dev/%s: cannot set process group: %m"), tty); |
3aa6b68f WF |
1070 | |
1071 | /* Get rid of the present outputs. */ | |
783b08fc KZ |
1072 | if (!closed) { |
1073 | close(STDOUT_FILENO); | |
1074 | close(STDERR_FILENO); | |
1075 | errno = 0; | |
1076 | } | |
3aa6b68f | 1077 | |
70bedfa1 KZ |
1078 | /* Set up standard output and standard error file descriptors. */ |
1079 | debug("duping\n"); | |
53d55042 | 1080 | |
70bedfa1 KZ |
1081 | /* set up stdout and stderr */ |
1082 | if (dup(STDIN_FILENO) != 1 || dup(STDIN_FILENO) != 2) | |
bde20e1b | 1083 | log_err(_("%s: dup problem: %m"), tty); |
6dbe3af9 | 1084 | |
3aa6b68f WF |
1085 | /* make stdio unbuffered for slow modem lines */ |
1086 | setvbuf(stdout, NULL, _IONBF, 0); | |
1087 | ||
6dbe3af9 | 1088 | /* |
70bedfa1 KZ |
1089 | * The following ioctl will fail if stdin is not a tty, but also when |
1090 | * there is noise on the modem control lines. In the latter case, the | |
53d55042 SK |
1091 | * common course of action is (1) fix your cables (2) give the modem |
1092 | * more time to properly reset after hanging up. | |
1093 | * | |
1094 | * SunOS users can achieve (2) by patching the SunOS kernel variable | |
1095 | * "zsadtrlow" to a larger value; 5 seconds seems to be a good value. | |
1096 | * http://www.sunmanagers.org/archives/1993/0574.html | |
6dbe3af9 | 1097 | */ |
bde20e1b | 1098 | memset(tp, 0, sizeof(struct termios)); |
70bedfa1 | 1099 | if (tcgetattr(STDIN_FILENO, tp) < 0) |
8c219bf4 | 1100 | log_err(_("%s: failed to get terminal attributes: %m"), tty); |
70bedfa1 | 1101 | |
fba8a535 WF |
1102 | #if defined (__s390__) || defined (__s390x__) |
1103 | if (!op->term) { | |
1104 | /* | |
1105 | * Special terminal on first serial line on a S/390(x) which | |
1106 | * is due legacy reasons a block terminal of type 3270 or | |
1107 | * higher. Whereas the second serial line on a S/390(x) is | |
1108 | * a real character terminal which is compatible with VT220. | |
1109 | */ | |
f2bcda51 | 1110 | if (strcmp(op->tty, "ttyS0") == 0) /* linux/drivers/s390/char/con3215.c */ |
fba8a535 | 1111 | op->term = DEFAULT_TTYS0; |
f2bcda51 WF |
1112 | else if (strncmp(op->tty, "3270/tty", 8) == 0) /* linux/drivers/s390/char/con3270.c */ |
1113 | op->term = DEFAULT_TTY32; | |
1114 | else if (strcmp(op->tty, "ttyS1") == 0) /* linux/drivers/s390/char/sclp_vt220.c */ | |
fba8a535 WF |
1115 | op->term = DEFAULT_TTYS1; |
1116 | } | |
1117 | #endif | |
c32270d4 CE |
1118 | |
1119 | #if defined(__FreeBSD_kernel__) | |
1120 | login_tty (0); | |
1121 | #endif | |
1122 | ||
70bedfa1 | 1123 | /* |
3aa6b68f | 1124 | * Detect if this is a virtual console or serial/modem line. |
b9c73909 WF |
1125 | * In case of a virtual console the ioctl KDGKBMODE succeeds |
1126 | * whereas on other lines it will fails. | |
70bedfa1 | 1127 | */ |
88e0f3df ST |
1128 | #ifdef KDGKBMODE |
1129 | if (ioctl(STDIN_FILENO, KDGKBMODE, &op->kbmode) == 0) | |
1130 | #else | |
1131 | if (ioctl(STDIN_FILENO, TIOCMGET, &serial) < 0 && (errno == EINVAL)) | |
1132 | #endif | |
1133 | { | |
3aa6b68f WF |
1134 | op->flags |= F_VCONSOLE; |
1135 | if (!op->term) | |
1136 | op->term = DEFAULT_VCTERM; | |
b9c73909 | 1137 | } else { |
88e0f3df | 1138 | #ifdef K_RAW |
b9c73909 | 1139 | op->kbmode = K_RAW; |
88e0f3df | 1140 | #endif |
b9c73909 WF |
1141 | if (!op->term) |
1142 | op->term = DEFAULT_STERM; | |
1143 | } | |
729def03 | 1144 | |
984a6096 SK |
1145 | if (setenv("TERM", op->term, 1) != 0) |
1146 | log_err(_("failed to set the %s environment variable"), "TERM"); | |
6dbe3af9 KZ |
1147 | } |
1148 | ||
6443dd43 SW |
1149 | /* Initialize termios settings. */ |
1150 | static void termio_clear(int fd) | |
1151 | { | |
1152 | /* | |
1153 | * Do not write a full reset (ESC c) because this destroys | |
1154 | * the unicode mode again if the terminal was in unicode | |
1155 | * mode. Also it clears the CONSOLE_MAGIC features which | |
1156 | * are required for some languages/console-fonts. | |
1157 | * Just put the cursor to the home position (ESC [ H), | |
1158 | * erase everything below the cursor (ESC [ J), and set the | |
1159 | * scrolling region to the full window (ESC [ r) | |
1160 | */ | |
1161 | write_all(fd, "\033[r\033[H\033[J", 9); | |
1162 | } | |
1163 | ||
53d55042 | 1164 | /* Initialize termios settings. */ |
bde20e1b | 1165 | static void termio_init(struct options *op, struct termios *tp) |
6dbe3af9 | 1166 | { |
70bedfa1 | 1167 | speed_t ispeed, ospeed; |
1683f6bf | 1168 | struct winsize ws; |
1eb16fd7 | 1169 | #ifdef USE_PLYMOUTH_SUPPORT |
bb280f79 | 1170 | struct termios lock; |
fe3f7e17 WF |
1171 | int i = (plymouth_command(MAGIC_PING) == 0) ? PLYMOUTH_TERMIOS_FLAGS_DELAY : 0; |
1172 | if (i) | |
1173 | plymouth_command(MAGIC_QUIT); | |
bb280f79 WF |
1174 | while (i-- > 0) { |
1175 | /* | |
1176 | * Even with TTYReset=no it seems with systemd or plymouth | |
1177 | * the termios flags become changed from under the first | |
1178 | * agetty on a serial system console as the flags are locked. | |
1179 | */ | |
1180 | memset(&lock, 0, sizeof(struct termios)); | |
1181 | if (ioctl(STDIN_FILENO, TIOCGLCKTRMIOS, &lock) < 0) | |
1182 | break; | |
1183 | if (!lock.c_iflag && !lock.c_oflag && !lock.c_cflag && !lock.c_lflag) | |
1184 | break; | |
1185 | debug("termios locked\n"); | |
bb280f79 WF |
1186 | sleep(1); |
1187 | } | |
1188 | memset(&lock, 0, sizeof(struct termios)); | |
1189 | ioctl(STDIN_FILENO, TIOCSLCKTRMIOS, &lock); | |
88e0f3df | 1190 | #endif |
70bedfa1 | 1191 | |
0da025da WF |
1192 | if (op->flags & F_VCONSOLE) { |
1193 | #if defined(IUTF8) && defined(KDGKBMODE) | |
b9c73909 | 1194 | switch(op->kbmode) { |
0da025da | 1195 | case K_UNICODE: |
b0198a11 | 1196 | setlocale(LC_CTYPE, "C.UTF-8"); |
0da025da WF |
1197 | op->flags |= F_UTF8; |
1198 | break; | |
1199 | case K_RAW: | |
1200 | case K_MEDIUMRAW: | |
1201 | case K_XLATE: | |
1202 | default: | |
1203 | setlocale(LC_CTYPE, "POSIX"); | |
1204 | op->flags &= ~F_UTF8; | |
1205 | break; | |
1206 | } | |
1207 | #else | |
1208 | setlocale(LC_CTYPE, "POSIX"); | |
1209 | op->flags &= ~F_UTF8; | |
1210 | #endif | |
1211 | reset_vc(op, tp); | |
1212 | ||
1213 | if ((tp->c_cflag & (CS8|PARODD|PARENB)) == CS8) | |
1214 | op->flags |= F_EIGHTBITS; | |
1215 | ||
6443dd43 SW |
1216 | if ((op->flags & F_NOCLEAR) == 0) |
1217 | termio_clear(STDOUT_FILENO); | |
0da025da WF |
1218 | return; |
1219 | } | |
1220 | ||
8410cdd3 KZ |
1221 | /* |
1222 | * Serial line | |
1223 | */ | |
1224 | ||
1225 | if (op->flags & F_KEEPSPEED || !op->numspeed) { | |
53d55042 SK |
1226 | /* Save the original setting. */ |
1227 | ispeed = cfgetispeed(tp); | |
70bedfa1 | 1228 | ospeed = cfgetospeed(tp); |
1683f6bf DWF |
1229 | |
1230 | if (!ispeed) ispeed = TTYDEF_SPEED; | |
1231 | if (!ospeed) ospeed = TTYDEF_SPEED; | |
1232 | ||
53d55042 | 1233 | } else { |
70bedfa1 | 1234 | ospeed = ispeed = op->speeds[FIRST_SPEED]; |
53d55042 | 1235 | } |
70bedfa1 KZ |
1236 | |
1237 | /* | |
1238 | * Initial termios settings: 8-bit characters, raw-mode, blocking i/o. | |
1239 | * Special characters are set after we have read the login name; all | |
1240 | * reads will be done in raw mode anyway. Errors will be dealt with | |
53d55042 | 1241 | * later on. |
70bedfa1 | 1242 | */ |
53d55042 | 1243 | |
8408647d WF |
1244 | #ifdef IUTF8 |
1245 | tp->c_iflag = tp->c_iflag & IUTF8; | |
7478fce0 ST |
1246 | if (tp->c_iflag & IUTF8) |
1247 | op->flags |= F_UTF8; | |
8408647d WF |
1248 | #else |
1249 | tp->c_iflag = 0; | |
1250 | #endif | |
9c62a232 DJ |
1251 | tp->c_lflag = 0; |
1252 | tp->c_oflag &= OPOST | ONLCR; | |
70bedfa1 | 1253 | |
1683f6bf | 1254 | if ((op->flags & F_KEEPCFLAGS) == 0) |
70bedfa1 KZ |
1255 | tp->c_cflag = CS8 | HUPCL | CREAD | (tp->c_cflag & CLOCAL); |
1256 | ||
53d55042 SK |
1257 | /* |
1258 | * Note that the speed is stored in the c_cflag termios field, so we have | |
9e930041 | 1259 | * set the speed always when the cflag is reset. |
70bedfa1 KZ |
1260 | */ |
1261 | cfsetispeed(tp, ispeed); | |
1262 | cfsetospeed(tp, ospeed); | |
1263 | ||
ef264c83 KZ |
1264 | /* The default is to follow setting from kernel, but it's possible |
1265 | * to explicitly remove/add CLOCAL flag by -L[=<mode>]*/ | |
1266 | switch (op->clocal) { | |
1267 | case CLOCAL_MODE_ALWAYS: | |
1268 | tp->c_cflag |= CLOCAL; /* -L or -L=always */ | |
1269 | break; | |
1270 | case CLOCAL_MODE_NEVER: | |
1271 | tp->c_cflag &= ~CLOCAL; /* -L=never */ | |
1272 | break; | |
1273 | case CLOCAL_MODE_AUTO: /* -L=auto */ | |
1274 | break; | |
1275 | } | |
1276 | ||
30e8b186 | 1277 | #ifdef HAVE_STRUCT_TERMIOS_C_LINE |
70bedfa1 | 1278 | tp->c_line = 0; |
1961482a | 1279 | #endif |
70bedfa1 KZ |
1280 | tp->c_cc[VMIN] = 1; |
1281 | tp->c_cc[VTIME] = 0; | |
7eda085c | 1282 | |
1683f6bf DWF |
1283 | /* Check for terminal size and if not found set default */ |
1284 | if (ioctl(STDIN_FILENO, TIOCGWINSZ, &ws) == 0) { | |
650e6df6 | 1285 | if (ws.ws_row == 0) |
1683f6bf | 1286 | ws.ws_row = 24; |
650e6df6 | 1287 | if (ws.ws_col == 0) |
1683f6bf | 1288 | ws.ws_col = 80; |
efcf26f4 KZ |
1289 | if (ioctl(STDIN_FILENO, TIOCSWINSZ, &ws)) |
1290 | debug("TIOCSWINSZ ioctl failed\n"); | |
1683f6bf DWF |
1291 | } |
1292 | ||
53d55042 | 1293 | /* Optionally enable hardware flow control. */ |
7eda085c | 1294 | #ifdef CRTSCTS |
70bedfa1 KZ |
1295 | if (op->flags & F_RTSCTS) |
1296 | tp->c_cflag |= CRTSCTS; | |
7eda085c | 1297 | #endif |
bb280f79 WF |
1298 | /* Flush input and output queues, important for modems! */ |
1299 | tcflush(STDIN_FILENO, TCIOFLUSH); | |
7eda085c | 1300 | |
bb280f79 WF |
1301 | if (tcsetattr(STDIN_FILENO, TCSANOW, tp)) |
1302 | log_warn(_("setting terminal attributes failed: %m")); | |
fd6b7a7f | 1303 | |
53d55042 SK |
1304 | /* Go to blocking input even in local mode. */ |
1305 | fcntl(STDIN_FILENO, F_SETFL, | |
1306 | fcntl(STDIN_FILENO, F_GETFL, 0) & ~O_NONBLOCK); | |
fd6b7a7f | 1307 | |
70bedfa1 | 1308 | debug("term_io 2\n"); |
6dbe3af9 KZ |
1309 | } |
1310 | ||
0da025da WF |
1311 | /* Reset virtual console on stdin to its defaults */ |
1312 | static void reset_vc(const struct options *op, struct termios *tp) | |
1313 | { | |
879a7ab4 KZ |
1314 | int fl = 0; |
1315 | ||
1316 | fl |= (op->flags & F_KEEPCFLAGS) == 0 ? 0 : UL_TTY_KEEPCFLAGS; | |
1317 | fl |= (op->flags & F_UTF8) == 0 ? 0 : UL_TTY_UTF8; | |
1318 | ||
1319 | reset_virtual_console(tp, fl); | |
0da025da | 1320 | |
0da025da | 1321 | if (tcsetattr(STDIN_FILENO, TCSADRAIN, tp)) |
8c219bf4 | 1322 | log_warn(_("setting terminal attributes failed: %m")); |
bb280f79 WF |
1323 | |
1324 | /* Go to blocking input even in local mode. */ | |
1325 | fcntl(STDIN_FILENO, F_SETFL, | |
1326 | fcntl(STDIN_FILENO, F_GETFL, 0) & ~O_NONBLOCK); | |
0da025da WF |
1327 | } |
1328 | ||
53d55042 | 1329 | /* Extract baud rate from modem status message. */ |
bde20e1b | 1330 | static void auto_baud(struct termios *tp) |
6dbe3af9 | 1331 | { |
bde20e1b | 1332 | speed_t speed; |
53d55042 | 1333 | int vmin; |
70bedfa1 | 1334 | unsigned iflag; |
53d55042 SK |
1335 | char buf[BUFSIZ]; |
1336 | char *bp; | |
1337 | int nread; | |
70bedfa1 KZ |
1338 | |
1339 | /* | |
1340 | * This works only if the modem produces its status code AFTER raising | |
1341 | * the DCD line, and if the computer is fast enough to set the proper | |
1342 | * baud rate before the message has gone by. We expect a message of the | |
1343 | * following format: | |
1344 | * | |
1345 | * <junk><number><junk> | |
1346 | * | |
1347 | * The number is interpreted as the baud rate of the incoming call. If the | |
1348 | * modem does not tell us the baud rate within one second, we will keep | |
1349 | * using the current baud rate. It is advisable to enable BREAK | |
1350 | * processing (comma-separated list of baud rates) if the processing of | |
1351 | * modem status messages is enabled. | |
1352 | */ | |
1353 | ||
1354 | /* | |
1355 | * Use 7-bit characters, don't block if input queue is empty. Errors will | |
53d55042 | 1356 | * be dealt with later on. |
70bedfa1 | 1357 | */ |
70bedfa1 | 1358 | iflag = tp->c_iflag; |
53d55042 SK |
1359 | /* Enable 8th-bit stripping. */ |
1360 | tp->c_iflag |= ISTRIP; | |
70bedfa1 | 1361 | vmin = tp->c_cc[VMIN]; |
53d55042 SK |
1362 | /* Do not block when queue is empty. */ |
1363 | tp->c_cc[VMIN] = 0; | |
70bedfa1 KZ |
1364 | tcsetattr(STDIN_FILENO, TCSANOW, tp); |
1365 | ||
1366 | /* | |
1367 | * Wait for a while, then read everything the modem has said so far and | |
1368 | * try to extract the speed of the dial-in call. | |
1369 | */ | |
53d55042 | 1370 | sleep(1); |
70bedfa1 KZ |
1371 | if ((nread = read(STDIN_FILENO, buf, sizeof(buf) - 1)) > 0) { |
1372 | buf[nread] = '\0'; | |
53d55042 | 1373 | for (bp = buf; bp < buf + nread; bp++) |
70bedfa1 KZ |
1374 | if (isascii(*bp) && isdigit(*bp)) { |
1375 | if ((speed = bcode(bp))) { | |
1376 | cfsetispeed(tp, speed); | |
1377 | cfsetospeed(tp, speed); | |
1378 | } | |
1379 | break; | |
1380 | } | |
6dbe3af9 | 1381 | } |
6dbe3af9 | 1382 | |
53d55042 | 1383 | /* Restore terminal settings. Errors will be dealt with later on. */ |
70bedfa1 KZ |
1384 | tp->c_iflag = iflag; |
1385 | tp->c_cc[VMIN] = vmin; | |
53d55042 | 1386 | tcsetattr(STDIN_FILENO, TCSANOW, tp); |
6dbe3af9 KZ |
1387 | } |
1388 | ||
2448f336 KZ |
1389 | static char *xgethostname(void) |
1390 | { | |
1391 | char *name; | |
1392 | size_t sz = get_hostname_max() + 1; | |
1393 | ||
1394 | name = malloc(sizeof(char) * sz); | |
1395 | if (!name) | |
1396 | log_err(_("failed to allocate memory: %m")); | |
1397 | ||
8362545b KZ |
1398 | if (gethostname(name, sz) != 0) { |
1399 | free(name); | |
2448f336 | 1400 | return NULL; |
8362545b | 1401 | } |
2448f336 KZ |
1402 | name[sz - 1] = '\0'; |
1403 | return name; | |
1404 | } | |
1405 | ||
1406 | static char *xgetdomainname(void) | |
1407 | { | |
1408 | #ifdef HAVE_GETDOMAINNAME | |
1409 | char *name; | |
58c756c9 | 1410 | const size_t sz = get_hostname_max() + 1; |
2448f336 KZ |
1411 | |
1412 | name = malloc(sizeof(char) * sz); | |
1413 | if (!name) | |
1414 | log_err(_("failed to allocate memory: %m")); | |
1415 | ||
8362545b KZ |
1416 | if (getdomainname(name, sz) != 0) { |
1417 | free(name); | |
2448f336 | 1418 | return NULL; |
8362545b | 1419 | } |
2448f336 KZ |
1420 | name[sz - 1] = '\0'; |
1421 | return name; | |
58c756c9 | 1422 | #else |
2448f336 | 1423 | return NULL; |
58c756c9 | 1424 | #endif |
2448f336 KZ |
1425 | } |
1426 | ||
b34f097e KZ |
1427 | static char *read_os_release(struct options *op, const char *varname) |
1428 | { | |
1429 | int fd = -1; | |
1430 | struct stat st; | |
1431 | size_t varsz = strlen(varname); | |
1432 | char *p, *buf = NULL, *ret = NULL; | |
1433 | ||
1434 | /* read the file only once */ | |
1435 | if (!op->osrelease) { | |
b28842ae | 1436 | fd = open(_PATH_OS_RELEASE_ETC, O_RDONLY); |
b34f097e | 1437 | if (fd == -1) { |
b28842ae KZ |
1438 | fd = open(_PATH_OS_RELEASE_USR, O_RDONLY); |
1439 | if (fd == -1) { | |
1440 | log_warn(_("cannot open os-release file")); | |
1441 | return NULL; | |
1442 | } | |
b34f097e KZ |
1443 | } |
1444 | ||
1445 | if (fstat(fd, &st) < 0 || st.st_size > 4 * 1024 * 1024) | |
1446 | goto done; | |
1447 | ||
1448 | op->osrelease = malloc(st.st_size + 1); | |
1449 | if (!op->osrelease) | |
1450 | log_err(_("failed to allocate memory: %m")); | |
1451 | if (read_all(fd, op->osrelease, st.st_size) != (ssize_t) st.st_size) { | |
1452 | free(op->osrelease); | |
1453 | op->osrelease = NULL; | |
1454 | goto done; | |
1455 | } | |
1456 | op->osrelease[st.st_size] = 0; | |
1457 | } | |
1458 | buf = strdup(op->osrelease); | |
1459 | if (!buf) | |
1460 | log_err(_("failed to allocate memory: %m")); | |
1461 | p = buf; | |
1462 | ||
1463 | for (;;) { | |
1464 | char *eol, *eon; | |
1465 | ||
1466 | p += strspn(p, "\n\r"); | |
1467 | p += strspn(p, " \t\n\r"); | |
1468 | if (!*p) | |
1469 | break; | |
1470 | if (strspn(p, "#;\n") != 0) { | |
1471 | p += strcspn(p, "\n\r"); | |
1472 | continue; | |
1473 | } | |
1474 | if (strncmp(p, varname, varsz) != 0) { | |
1475 | p += strcspn(p, "\n\r"); | |
1476 | continue; | |
1477 | } | |
1478 | p += varsz; | |
1479 | p += strspn(p, " \t\n\r=\""); | |
1480 | eol = p + strcspn(p, "\n\r"); | |
1481 | *eol = '\0'; | |
1482 | eon = eol-1; | |
1483 | while (eon > p) { | |
1484 | if (*eon == '\t' || *eon == ' ') { | |
1485 | eon--; | |
1486 | continue; | |
1487 | } | |
1488 | if (*eon == '"') { | |
1489 | *eon = '\0'; | |
1490 | break; | |
1491 | } | |
1492 | break; | |
1493 | } | |
f614b73c | 1494 | free(ret); |
b34f097e KZ |
1495 | ret = strdup(p); |
1496 | if (!ret) | |
1497 | log_err(_("failed to allocate memory: %m")); | |
1498 | p = eol + 1; | |
1499 | } | |
1500 | done: | |
1501 | free(buf); | |
1502 | if (fd >= 0) | |
1503 | close(fd); | |
1504 | return ret; | |
1505 | } | |
1506 | ||
c2ef308b | 1507 | #ifdef AGETTY_RELOAD |
e36deb64 SW |
1508 | static void open_netlink(void) |
1509 | { | |
1510 | struct sockaddr_nl addr = { 0, }; | |
1511 | int sock; | |
1512 | ||
1513 | if (netlink_fd != AGETTY_RELOAD_FDNONE) | |
1514 | return; | |
1515 | ||
1516 | sock = socket(AF_NETLINK, SOCK_RAW, NETLINK_ROUTE); | |
1517 | if (sock >= 0) { | |
1518 | addr.nl_family = AF_NETLINK; | |
1519 | addr.nl_pid = getpid(); | |
1520 | addr.nl_groups = RTMGRP_IPV4_IFADDR | RTMGRP_IPV6_IFADDR; | |
1521 | if (bind(sock, (struct sockaddr *)&addr, sizeof(addr)) < 0) | |
1522 | close(sock); | |
1523 | else | |
1524 | netlink_fd = sock; | |
1525 | } | |
1526 | } | |
1527 | ||
1528 | static int process_netlink_msg(int *changed) | |
1529 | { | |
1530 | char buf[4096]; | |
1531 | struct sockaddr_nl snl; | |
1532 | struct nlmsghdr *h; | |
1533 | int rc; | |
1534 | ||
1535 | struct iovec iov = { | |
1536 | .iov_base = buf, | |
1537 | .iov_len = sizeof(buf) | |
1538 | }; | |
1539 | struct msghdr msg = { | |
1540 | .msg_name = &snl, | |
1541 | .msg_namelen = sizeof(snl), | |
1542 | .msg_iov = &iov, | |
1543 | .msg_iovlen = 1, | |
1544 | .msg_control = NULL, | |
1545 | .msg_controllen = 0, | |
1546 | .msg_flags = 0 | |
1547 | }; | |
1548 | ||
1549 | rc = recvmsg(netlink_fd, &msg, MSG_DONTWAIT); | |
1550 | if (rc < 0) { | |
1551 | if (errno == EWOULDBLOCK || errno == EAGAIN) | |
1552 | return 0; | |
1553 | ||
1554 | /* Failure, just stop listening for changes */ | |
1555 | close(netlink_fd); | |
1556 | netlink_fd = AGETTY_RELOAD_FDNONE; | |
1557 | return 0; | |
1558 | } | |
1559 | ||
1560 | for (h = (struct nlmsghdr *)buf; NLMSG_OK(h, (unsigned int)rc); h = NLMSG_NEXT(h, rc)) { | |
1561 | if (h->nlmsg_type == NLMSG_DONE || | |
1562 | h->nlmsg_type == NLMSG_ERROR) { | |
1563 | close(netlink_fd); | |
1564 | netlink_fd = AGETTY_RELOAD_FDNONE; | |
1565 | return 0; | |
1566 | } | |
1567 | ||
1568 | *changed = 1; | |
1569 | break; | |
1570 | } | |
1571 | ||
1572 | return 1; | |
1573 | } | |
1574 | ||
1575 | static int process_netlink(void) | |
1576 | { | |
1577 | int changed = 0; | |
1578 | while (process_netlink_msg(&changed)); | |
1579 | return changed; | |
1580 | } | |
1581 | ||
2a14beb4 | 1582 | static int wait_for_term_input(int fd) |
c2ef308b KZ |
1583 | { |
1584 | char buffer[sizeof(struct inotify_event) + NAME_MAX + 1]; | |
c2ef308b | 1585 | fd_set rfds; |
c2ef308b KZ |
1586 | |
1587 | if (inotify_fd == AGETTY_RELOAD_FDNONE) { | |
1588 | /* make sure the reload trigger file exists */ | |
1589 | int reload_fd = open(AGETTY_RELOAD_FILENAME, | |
1590 | O_CREAT|O_CLOEXEC|O_RDONLY, | |
1591 | S_IRUSR|S_IWUSR); | |
1592 | ||
1593 | /* initialize reload trigger inotify stuff */ | |
1594 | if (reload_fd >= 0) { | |
1595 | inotify_fd = inotify_init1(IN_NONBLOCK | IN_CLOEXEC); | |
1596 | if (inotify_fd > 0) | |
1597 | inotify_add_watch(inotify_fd, AGETTY_RELOAD_FILENAME, | |
1598 | IN_ATTRIB | IN_MODIFY); | |
1599 | ||
1600 | close(reload_fd); | |
1601 | } else | |
1602 | log_warn(_("failed to create reload file: %s: %m"), | |
1603 | AGETTY_RELOAD_FILENAME); | |
1604 | } | |
1605 | ||
e36deb64 | 1606 | while (1) { |
5184d936 KZ |
1607 | int nfds = fd; |
1608 | ||
e36deb64 SW |
1609 | FD_ZERO(&rfds); |
1610 | FD_SET(fd, &rfds); | |
c2ef308b | 1611 | |
5184d936 | 1612 | if (inotify_fd >= 0) { |
e36deb64 | 1613 | FD_SET(inotify_fd, &rfds); |
5184d936 KZ |
1614 | nfds = max(nfds, inotify_fd); |
1615 | } | |
1616 | if (netlink_fd >= 0) { | |
e36deb64 | 1617 | FD_SET(netlink_fd, &rfds); |
5184d936 KZ |
1618 | nfds = max(nfds, netlink_fd); |
1619 | } | |
c2ef308b | 1620 | |
e36deb64 | 1621 | /* If waiting fails, just fall through, presumably reading input will fail */ |
5184d936 | 1622 | if (select(nfds + 1, &rfds, NULL, NULL, NULL) < 0) |
e36deb64 | 1623 | return 1; |
c2ef308b | 1624 | |
e36deb64 | 1625 | if (FD_ISSET(fd, &rfds)) { |
e36deb64 | 1626 | return 1; |
c2ef308b | 1627 | |
e36deb64 SW |
1628 | } else if (netlink_fd >= 0 && FD_ISSET(netlink_fd, &rfds)) { |
1629 | if (!process_netlink()) | |
1630 | continue; | |
c2ef308b KZ |
1631 | |
1632 | /* Just drain the inotify buffer */ | |
e36deb64 SW |
1633 | } else if (inotify_fd >= 0 && FD_ISSET(inotify_fd, &rfds)) { |
1634 | while (read(inotify_fd, buffer, sizeof (buffer)) > 0); | |
1635 | } | |
1636 | ||
c2ef308b KZ |
1637 | return 0; |
1638 | } | |
1639 | } | |
1640 | #endif /* AGETTY_RELOAD */ | |
1641 | static void print_issue_file(struct options *op, struct termios *tp) | |
6dbe3af9 KZ |
1642 | { |
1643 | #ifdef ISSUE | |
53d55042 | 1644 | FILE *fd; |
c2ef308b | 1645 | #endif |
e85281a8 DWF |
1646 | if ((op->flags & F_NONL) == 0) { |
1647 | /* Issue not in use, start with a new line. */ | |
1648 | write_all(STDOUT_FILENO, "\r\n", 2); | |
1649 | } | |
3aa6b68f | 1650 | |
53d55042 | 1651 | #ifdef ISSUE |
70bedfa1 | 1652 | if ((op->flags & F_ISSUE) && (fd = fopen(op->issue, "r"))) { |
1683f6bf | 1653 | int c, oflag = tp->c_oflag; /* Save current setting. */ |
3aa6b68f | 1654 | |
1683f6bf DWF |
1655 | if ((op->flags & F_VCONSOLE) == 0) { |
1656 | /* Map new line in output to carriage return & new line. */ | |
1657 | tp->c_oflag |= (ONLCR | OPOST); | |
1658 | tcsetattr(STDIN_FILENO, TCSADRAIN, tp); | |
1659 | } | |
70bedfa1 KZ |
1660 | |
1661 | while ((c = getc(fd)) != EOF) { | |
729def03 | 1662 | if (c == '\\') |
2b945eda | 1663 | output_special_char(getc(fd), op, tp, fd); |
729def03 | 1664 | else |
763d7a87 | 1665 | putchar(c); |
70bedfa1 KZ |
1666 | } |
1667 | fflush(stdout); | |
6dbe3af9 | 1668 | |
1683f6bf DWF |
1669 | if ((op->flags & F_VCONSOLE) == 0) { |
1670 | /* Restore settings. */ | |
1671 | tp->c_oflag = oflag; | |
1672 | /* Wait till output is gone. */ | |
1673 | tcsetattr(STDIN_FILENO, TCSADRAIN, tp); | |
1674 | } | |
53d55042 | 1675 | fclose(fd); |
6dbe3af9 | 1676 | } |
eb8e1f9f | 1677 | #endif /* ISSUE */ |
c2ef308b KZ |
1678 | } |
1679 | ||
1680 | /* Show login prompt, optionally preceded by /etc/issue contents. */ | |
1681 | static void do_prompt(struct options *op, struct termios *tp) | |
1682 | { | |
fe3f7e17 | 1683 | #ifdef AGETTY_RELOAD |
c2ef308b | 1684 | again: |
fe3f7e17 | 1685 | #endif |
c2ef308b KZ |
1686 | print_issue_file(op, tp); |
1687 | ||
eb8e1f9f | 1688 | if (op->flags & F_LOGINPAUSE) { |
8c219bf4 | 1689 | puts(_("[press ENTER to login]")); |
c2ef308b | 1690 | #ifdef AGETTY_RELOAD |
2a14beb4 | 1691 | if (!wait_for_term_input(STDIN_FILENO)) { |
c2ef308b KZ |
1692 | /* reload issue */ |
1693 | if (op->flags & F_VCONSOLE) | |
1694 | termio_clear(STDOUT_FILENO); | |
1695 | goto again; | |
1696 | } | |
790119b8 | 1697 | #else |
eb8e1f9f | 1698 | getc(stdin); |
790119b8 | 1699 | #endif |
eb8e1f9f WF |
1700 | } |
1701 | #ifdef KDGKBLED | |
36601b23 KZ |
1702 | if (!(op->flags & F_NOHINTS) && !op->autolog && |
1703 | (op->flags & F_VCONSOLE)) { | |
a694957a KZ |
1704 | int kb = 0; |
1705 | ||
eb8e1f9f | 1706 | if (ioctl(STDIN_FILENO, KDGKBLED, &kb) == 0) { |
a694957a KZ |
1707 | char hint[256] = { '\0' }; |
1708 | int nl = 0; | |
a694957a | 1709 | |
01c5b787 | 1710 | if (access(_PATH_NUMLOCK_ON, F_OK) == 0) |
a694957a KZ |
1711 | nl = 1; |
1712 | ||
1713 | if (nl && (kb & 0x02) == 0) | |
1714 | append(hint, sizeof(hint), NULL, _("Num Lock off")); | |
1715 | ||
1716 | else if (nl == 0 && (kb & 2) && (kb & 0x20) == 0) | |
1717 | append(hint, sizeof(hint), NULL, _("Num Lock on")); | |
1718 | ||
1719 | if ((kb & 0x04) && (kb & 0x40) == 0) | |
1720 | append(hint, sizeof(hint), ", ", _("Caps Lock on")); | |
1721 | ||
1722 | if ((kb & 0x01) && (kb & 0x10) == 0) | |
1723 | append(hint, sizeof(hint), ", ", _("Scroll Lock on")); | |
1724 | ||
1725 | if (*hint) | |
1726 | printf(_("Hint: %s\n\n"), hint); | |
eb8e1f9f WF |
1727 | } |
1728 | } | |
1729 | #endif /* KDGKBLED */ | |
e85281a8 | 1730 | if ((op->flags & F_NOHOSTNAME) == 0) { |
2448f336 KZ |
1731 | char *hn = xgethostname(); |
1732 | ||
1733 | if (hn) { | |
e85281a8 | 1734 | char *dot = strchr(hn, '.'); |
74b3df85 SK |
1735 | char *cn = hn; |
1736 | struct addrinfo *res = NULL; | |
e85281a8 | 1737 | |
e85281a8 DWF |
1738 | if ((op->flags & F_LONGHNAME) == 0) { |
1739 | if (dot) | |
1740 | *dot = '\0'; | |
74b3df85 SK |
1741 | |
1742 | } else if (dot == NULL) { | |
1743 | struct addrinfo hints; | |
1744 | ||
1745 | memset(&hints, 0, sizeof(hints)); | |
1746 | hints.ai_flags = AI_CANONNAME; | |
1747 | ||
1748 | if (!getaddrinfo(hn, NULL, &hints, &res) | |
1749 | && res && res->ai_canonname) | |
1750 | cn = res->ai_canonname; | |
1751 | } | |
1752 | ||
1753 | write_all(STDOUT_FILENO, cn, strlen(cn)); | |
e85281a8 | 1754 | write_all(STDOUT_FILENO, " ", 1); |
74b3df85 SK |
1755 | |
1756 | if (res) | |
1757 | freeaddrinfo(res); | |
2448f336 | 1758 | free(hn); |
e85281a8 | 1759 | } |
70bedfa1 | 1760 | } |
933956cb | 1761 | if (!op->autolog) { |
eb8e1f9f WF |
1762 | /* Always show login prompt. */ |
1763 | write_all(STDOUT_FILENO, LOGIN, sizeof(LOGIN) - 1); | |
1764 | } | |
6dbe3af9 KZ |
1765 | } |
1766 | ||
53d55042 | 1767 | /* Select next baud rate. */ |
bde20e1b | 1768 | static void next_speed(struct options *op, struct termios *tp) |
6dbe3af9 | 1769 | { |
70bedfa1 KZ |
1770 | static int baud_index = -1; |
1771 | ||
1772 | if (baud_index == -1) | |
1773 | /* | |
53d55042 | 1774 | * If the F_KEEPSPEED flags is set then the FIRST_SPEED is not |
70bedfa1 KZ |
1775 | * tested yet (see termio_init()). |
1776 | */ | |
53d55042 SK |
1777 | baud_index = |
1778 | (op->flags & F_KEEPSPEED) ? FIRST_SPEED : 1 % op->numspeed; | |
70bedfa1 KZ |
1779 | else |
1780 | baud_index = (baud_index + 1) % op->numspeed; | |
1781 | ||
1782 | cfsetispeed(tp, op->speeds[baud_index]); | |
1783 | cfsetospeed(tp, op->speeds[baud_index]); | |
53d55042 | 1784 | tcsetattr(STDIN_FILENO, TCSANOW, tp); |
6dbe3af9 KZ |
1785 | } |
1786 | ||
53d55042 | 1787 | /* Get user name, establish parity, speed, erase, kill & eol. */ |
bde20e1b | 1788 | static char *get_logname(struct options *op, struct termios *tp, struct chardata *cp) |
6dbe3af9 | 1789 | { |
70bedfa1 | 1790 | static char logname[BUFSIZ]; |
53d55042 SK |
1791 | char *bp; |
1792 | char c; /* input character, full eight bits */ | |
1793 | char ascval; /* low 7 bits of input character */ | |
1683f6bf | 1794 | int eightbit; |
53d55042 SK |
1795 | static char *erase[] = { /* backspace-space-backspace */ |
1796 | "\010\040\010", /* space parity */ | |
1797 | "\010\040\010", /* odd parity */ | |
1798 | "\210\240\210", /* even parity */ | |
1799 | "\210\240\210", /* no parity */ | |
70bedfa1 KZ |
1800 | }; |
1801 | ||
1802 | /* Initialize kill, erase, parity etc. (also after switching speeds). */ | |
f5664477 | 1803 | INIT_CHARDATA(cp); |
70bedfa1 | 1804 | |
53d55042 SK |
1805 | /* |
1806 | * Flush pending input (especially important after parsing or switching | |
1807 | * the baud rate). | |
1808 | */ | |
1683f6bf DWF |
1809 | if ((op->flags & F_VCONSOLE) == 0) |
1810 | sleep(1); | |
53d55042 | 1811 | tcflush(STDIN_FILENO, TCIFLUSH); |
70bedfa1 | 1812 | |
1683f6bf DWF |
1813 | eightbit = (op->flags & F_EIGHTBITS); |
1814 | bp = logname; | |
1815 | *bp = '\0'; | |
1816 | ||
1817 | while (*logname == '\0') { | |
1683f6bf | 1818 | /* Write issue file and prompt */ |
70bedfa1 KZ |
1819 | do_prompt(op, tp); |
1820 | ||
6443dd43 | 1821 | #ifdef AGETTY_RELOAD |
2a14beb4 KZ |
1822 | if (!wait_for_term_input(STDIN_FILENO)) { |
1823 | /* refresh prompt -- discard input data, clear terminal | |
1824 | * and call do_prompt() again | |
1825 | */ | |
1826 | if ((op->flags & F_VCONSOLE) == 0) | |
1827 | sleep(1); | |
1828 | tcflush(STDIN_FILENO, TCIFLUSH); | |
6443dd43 SW |
1829 | if (op->flags & F_VCONSOLE) |
1830 | termio_clear(STDOUT_FILENO); | |
2a14beb4 KZ |
1831 | bp = logname; |
1832 | *bp = '\0'; | |
6443dd43 SW |
1833 | continue; |
1834 | } | |
1835 | #endif | |
1683f6bf DWF |
1836 | cp->eol = '\0'; |
1837 | ||
1838 | /* Read name, watch for break and end-of-line. */ | |
1839 | while (cp->eol == '\0') { | |
1840 | ||
cb872ac9 | 1841 | char key; |
790119b8 | 1842 | |
2a14beb4 KZ |
1843 | debug("read from FD\n"); |
1844 | if (read(STDIN_FILENO, &c, 1) < 1) { | |
1845 | debug("read failed\n"); | |
1683f6bf | 1846 | |
714cff30 KZ |
1847 | /* The terminal could be open with O_NONBLOCK when |
1848 | * -L (force CLOCAL) is specified... */ | |
1683f6bf | 1849 | if (errno == EINTR || errno == EAGAIN) { |
a5bd7939 | 1850 | xusleep(250000); |
1683f6bf DWF |
1851 | continue; |
1852 | } | |
1853 | switch (errno) { | |
1854 | case 0: | |
1855 | case EIO: | |
1856 | case ESRCH: | |
1857 | case EINVAL: | |
1858 | case ENOENT: | |
1859 | break; | |
1860 | default: | |
1861 | log_err(_("%s: read: %m"), op->tty); | |
1862 | } | |
70bedfa1 | 1863 | } |
1683f6bf | 1864 | |
70bedfa1 | 1865 | /* Do parity bit handling. */ |
1683f6bf | 1866 | if (eightbit) |
70bedfa1 | 1867 | ascval = c; |
1683f6bf DWF |
1868 | else if (c != (ascval = (c & 0177))) { |
1869 | uint32_t bits; /* # of "1" bits per character */ | |
1870 | uint32_t mask; /* mask with 1 bit up */ | |
1871 | for (bits = 1, mask = 1; mask & 0177; mask <<= 1) { | |
70bedfa1 | 1872 | if (mask & ascval) |
53d55042 | 1873 | bits++; |
1683f6bf | 1874 | } |
70bedfa1 KZ |
1875 | cp->parity |= ((bits & 1) ? 1 : 2); |
1876 | } | |
1683f6bf | 1877 | |
cb872ac9 KZ |
1878 | if (op->killchars && strchr(op->killchars, ascval)) |
1879 | key = CTL('U'); | |
1880 | else if (op->erasechars && strchr(op->erasechars, ascval)) | |
1881 | key = DEL; | |
1882 | else | |
1883 | key = ascval; | |
1884 | ||
70bedfa1 | 1885 | /* Do erase, kill and end-of-line processing. */ |
cb872ac9 | 1886 | switch (key) { |
1683f6bf DWF |
1887 | case 0: |
1888 | *bp = 0; | |
1889 | if (op->numspeed > 1) | |
4a9b7543 | 1890 | return NULL; |
1683f6bf | 1891 | break; |
70bedfa1 KZ |
1892 | case CR: |
1893 | case NL: | |
1683f6bf DWF |
1894 | *bp = 0; /* terminate logname */ |
1895 | cp->eol = ascval; /* set end-of-line char */ | |
70bedfa1 KZ |
1896 | break; |
1897 | case BS: | |
1898 | case DEL: | |
1683f6bf | 1899 | cp->erase = ascval; /* set erase character */ |
70bedfa1 | 1900 | if (bp > logname) { |
b9261127 | 1901 | if ((tp->c_lflag & ECHO) == 0) |
1683f6bf | 1902 | write_all(1, erase[cp->parity], 3); |
70bedfa1 KZ |
1903 | bp--; |
1904 | } | |
1905 | break; | |
1906 | case CTL('U'): | |
1683f6bf | 1907 | cp->kill = ascval; /* set kill character */ |
70bedfa1 | 1908 | while (bp > logname) { |
b9261127 | 1909 | if ((tp->c_lflag & ECHO) == 0) |
1683f6bf | 1910 | write_all(1, erase[cp->parity], 3); |
70bedfa1 KZ |
1911 | bp--; |
1912 | } | |
1913 | break; | |
1914 | case CTL('D'): | |
1915 | exit(EXIT_SUCCESS); | |
1916 | default: | |
1683f6bf DWF |
1917 | if (!isascii(ascval) || !isprint(ascval)) |
1918 | break; | |
1919 | if ((size_t)(bp - logname) >= sizeof(logname) - 1) | |
bde20e1b | 1920 | log_err(_("%s: input overrun"), op->tty); |
2a14beb4 | 1921 | if ((tp->c_lflag & ECHO) == 0) |
1683f6bf DWF |
1922 | write_all(1, &c, 1); /* echo the character */ |
1923 | *bp++ = ascval; /* and store it */ | |
70bedfa1 KZ |
1924 | break; |
1925 | } | |
6dbe3af9 | 1926 | } |
6dbe3af9 | 1927 | } |
790119b8 | 1928 | |
1683f6bf DWF |
1929 | #ifdef HAVE_WIDECHAR |
1930 | if ((op->flags & (F_EIGHTBITS|F_UTF8)) == (F_EIGHTBITS|F_UTF8)) { | |
1931 | /* Check out UTF-8 multibyte characters */ | |
1932 | ssize_t len; | |
1933 | wchar_t *wcs, *wcp; | |
1934 | ||
1935 | len = mbstowcs((wchar_t *)0, logname, 0); | |
1936 | if (len < 0) | |
8c219bf4 | 1937 | log_err(_("%s: invalid character conversion for login name"), op->tty); |
1683f6bf | 1938 | |
fea1cbf7 | 1939 | wcs = malloc((len + 1) * sizeof(wchar_t)); |
ca8e91a4 KZ |
1940 | if (!wcs) |
1941 | log_err(_("failed to allocate memory: %m")); | |
1683f6bf DWF |
1942 | |
1943 | len = mbstowcs(wcs, logname, len + 1); | |
1944 | if (len < 0) | |
8c219bf4 | 1945 | log_err(_("%s: invalid character conversion for login name"), op->tty); |
1683f6bf DWF |
1946 | |
1947 | wcp = wcs; | |
1948 | while (*wcp) { | |
1949 | const wint_t wc = *wcp++; | |
1950 | if (!iswprint(wc)) | |
8c219bf4 | 1951 | log_err(_("%s: invalid character 0x%x in login name"), op->tty, wc); |
1683f6bf DWF |
1952 | } |
1953 | free(wcs); | |
1954 | } else | |
1955 | #endif | |
1956 | if ((op->flags & F_LCUC) && (cp->capslock = caps_lock(logname))) { | |
1957 | ||
1958 | /* Handle names with upper case and no lower case. */ | |
70bedfa1 KZ |
1959 | for (bp = logname; *bp; bp++) |
1960 | if (isupper(*bp)) | |
1683f6bf DWF |
1961 | *bp = tolower(*bp); /* map name to lower case */ |
1962 | } | |
1963 | ||
70bedfa1 | 1964 | return logname; |
6dbe3af9 KZ |
1965 | } |
1966 | ||
53d55042 | 1967 | /* Set the final tty mode bits. */ |
bde20e1b | 1968 | static void termio_final(struct options *op, struct termios *tp, struct chardata *cp) |
6dbe3af9 | 1969 | { |
70bedfa1 | 1970 | /* General terminal-independent stuff. */ |
53d55042 SK |
1971 | |
1972 | /* 2-way flow control */ | |
1973 | tp->c_iflag |= IXON | IXOFF; | |
1974 | tp->c_lflag |= ICANON | ISIG | ECHO | ECHOE | ECHOK | ECHOKE; | |
1975 | /* no longer| ECHOCTL | ECHOPRT */ | |
70bedfa1 KZ |
1976 | tp->c_oflag |= OPOST; |
1977 | /* tp->c_cflag = 0; */ | |
53d55042 SK |
1978 | tp->c_cc[VINTR] = DEF_INTR; |
1979 | tp->c_cc[VQUIT] = DEF_QUIT; | |
1980 | tp->c_cc[VEOF] = DEF_EOF; | |
70bedfa1 | 1981 | tp->c_cc[VEOL] = DEF_EOL; |
fd6b7a7f | 1982 | #ifdef __linux__ |
53d55042 | 1983 | tp->c_cc[VSWTC] = DEF_SWITCH; |
1961482a | 1984 | #elif defined(VSWTCH) |
53d55042 SK |
1985 | tp->c_cc[VSWTCH] = DEF_SWITCH; |
1986 | #endif /* __linux__ */ | |
6dbe3af9 | 1987 | |
70bedfa1 KZ |
1988 | /* Account for special characters seen in input. */ |
1989 | if (cp->eol == CR) { | |
53d55042 SK |
1990 | tp->c_iflag |= ICRNL; |
1991 | tp->c_oflag |= ONLCR; | |
70bedfa1 | 1992 | } |
53d55042 SK |
1993 | tp->c_cc[VERASE] = cp->erase; |
1994 | tp->c_cc[VKILL] = cp->kill; | |
70bedfa1 KZ |
1995 | |
1996 | /* Account for the presence or absence of parity bits in input. */ | |
1997 | switch (cp->parity) { | |
53d55042 SK |
1998 | case 0: |
1999 | /* space (always 0) parity */ | |
2000 | break; | |
2001 | case 1: | |
2002 | /* odd parity */ | |
2003 | tp->c_cflag |= PARODD; | |
b1557fe9 | 2004 | /* fallthrough */ |
53d55042 SK |
2005 | case 2: |
2006 | /* even parity */ | |
2007 | tp->c_cflag |= PARENB; | |
2008 | tp->c_iflag |= INPCK | ISTRIP; | |
b1557fe9 | 2009 | /* fallthrough */ |
53d55042 SK |
2010 | case (1 | 2): |
2011 | /* no parity bit */ | |
2012 | tp->c_cflag &= ~CSIZE; | |
2013 | tp->c_cflag |= CS7; | |
2014 | break; | |
70bedfa1 KZ |
2015 | } |
2016 | /* Account for upper case without lower case. */ | |
2017 | if (cp->capslock) { | |
ee519041 | 2018 | #ifdef IUCLC |
70bedfa1 | 2019 | tp->c_iflag |= IUCLC; |
ee519041 | 2020 | #endif |
b75c8134 | 2021 | #ifdef XCASE |
70bedfa1 | 2022 | tp->c_lflag |= XCASE; |
1961482a | 2023 | #endif |
ee519041 | 2024 | #ifdef OLCUC |
70bedfa1 | 2025 | tp->c_oflag |= OLCUC; |
ee519041 | 2026 | #endif |
70bedfa1 | 2027 | } |
53d55042 | 2028 | /* Optionally enable hardware flow control. */ |
6dbe3af9 | 2029 | #ifdef CRTSCTS |
70bedfa1 KZ |
2030 | if (op->flags & F_RTSCTS) |
2031 | tp->c_cflag |= CRTSCTS; | |
6dbe3af9 KZ |
2032 | #endif |
2033 | ||
53d55042 | 2034 | /* Finally, make the new settings effective. */ |
70bedfa1 | 2035 | if (tcsetattr(STDIN_FILENO, TCSANOW, tp) < 0) |
8c219bf4 | 2036 | log_err(_("%s: failed to set terminal attributes: %m"), op->tty); |
6dbe3af9 KZ |
2037 | } |
2038 | ||
53d55042 SK |
2039 | /* |
2040 | * String contains upper case without lower case. | |
2041 | * http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=52940 | |
2042 | * http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=156242 | |
2043 | */ | |
bde20e1b | 2044 | static int caps_lock(char *s) |
6dbe3af9 | 2045 | { |
53d55042 | 2046 | int capslock; |
70bedfa1 KZ |
2047 | |
2048 | for (capslock = 0; *s; s++) { | |
2049 | if (islower(*s)) | |
2050 | return EXIT_SUCCESS; | |
2051 | if (capslock == 0) | |
2052 | capslock = isupper(*s); | |
2053 | } | |
2054 | return capslock; | |
6dbe3af9 KZ |
2055 | } |
2056 | ||
53d55042 | 2057 | /* Convert speed string to speed code; return 0 on failure. */ |
bde20e1b | 2058 | static speed_t bcode(char *s) |
6dbe3af9 | 2059 | { |
1a204cd2 | 2060 | const struct Speedtab *sp; |
53d55042 | 2061 | long speed = atol(s); |
6dbe3af9 | 2062 | |
70bedfa1 KZ |
2063 | for (sp = speedtab; sp->speed; sp++) |
2064 | if (sp->speed == speed) | |
2065 | return sp->code; | |
2066 | return 0; | |
6dbe3af9 KZ |
2067 | } |
2068 | ||
9325dbfd | 2069 | static void __attribute__((__noreturn__)) usage(void) |
6dbe3af9 | 2070 | { |
9325dbfd RM |
2071 | FILE *out = stdout; |
2072 | ||
7d368556 | 2073 | fputs(USAGE_HEADER, out); |
3755d48b BS |
2074 | fprintf(out, _(" %1$s [options] <line> [<baud_rate>,...] [<termtype>]\n" |
2075 | " %1$s [options] <baud_rate>,... <line> [<termtype>]\n"), program_invocation_short_name); | |
451dbcfa BS |
2076 | |
2077 | fputs(USAGE_SEPARATOR, out); | |
2078 | fputs(_("Open a terminal and set its mode.\n"), out); | |
2079 | ||
7d368556 SK |
2080 | fputs(USAGE_OPTIONS, out); |
2081 | fputs(_(" -8, --8bits assume 8-bit tty\n"), out); | |
2082 | fputs(_(" -a, --autologin <user> login the specified user automatically\n"), out); | |
2083 | fputs(_(" -c, --noreset do not reset control mode\n"), out); | |
1505a0b2 | 2084 | fputs(_(" -E, --remote use -r <hostname> for login(1)\n"), out); |
7d368556 SK |
2085 | fputs(_(" -f, --issue-file <file> display issue file\n"), out); |
2086 | fputs(_(" -h, --flow-control enable hardware flow control\n"), out); | |
2087 | fputs(_(" -H, --host <hostname> specify login host\n"), out); | |
2088 | fputs(_(" -i, --noissue do not display issue file\n"), out); | |
2089 | fputs(_(" -I, --init-string <string> set init string\n"), out); | |
584c0744 | 2090 | fputs(_(" -J --noclear do not clear the screen before prompt\n"), out); |
7d368556 | 2091 | fputs(_(" -l, --login-program <file> specify login program\n"), out); |
38ae77d7 | 2092 | fputs(_(" -L, --local-line[=<mode>] control the local line flag\n"), out); |
7d368556 SK |
2093 | fputs(_(" -m, --extract-baud extract baud rate during connect\n"), out); |
2094 | fputs(_(" -n, --skip-login do not prompt for login\n"), out); | |
584c0744 | 2095 | fputs(_(" -N --nonewline do not print a newline before issue\n"), out); |
7d368556 | 2096 | fputs(_(" -o, --login-options <opts> options that are passed to login\n"), out); |
a056cfe2 | 2097 | fputs(_(" -p, --login-pause wait for any key before the login\n"), out); |
4b856ee4 | 2098 | fputs(_(" -r, --chroot <dir> change root to the directory\n"), out); |
7d368556 SK |
2099 | fputs(_(" -R, --hangup do virtually hangup on the tty\n"), out); |
2100 | fputs(_(" -s, --keep-baud try to keep baud rate after break\n"), out); | |
2101 | fputs(_(" -t, --timeout <number> login process timeout\n"), out); | |
2102 | fputs(_(" -U, --detect-case detect uppercase terminal\n"), out); | |
2103 | fputs(_(" -w, --wait-cr wait carriage-return\n"), out); | |
7d368556 | 2104 | fputs(_(" --nohints do not print hints\n"), out); |
a056cfe2 | 2105 | fputs(_(" --nohostname no hostname at all will be shown\n"), out); |
7d368556 SK |
2106 | fputs(_(" --long-hostname show full qualified hostname\n"), out); |
2107 | fputs(_(" --erase-chars <string> additional backspace chars\n"), out); | |
2108 | fputs(_(" --kill-chars <string> additional kill chars\n"), out); | |
584c0744 BR |
2109 | fputs(_(" --chdir <directory> chdir before the login\n"), out); |
2110 | fputs(_(" --delay <number> sleep seconds before prompt\n"), out); | |
2111 | fputs(_(" --nice <number> run login with this priority\n"), out); | |
6443dd43 | 2112 | fputs(_(" --reload reload prompts on running agetty instances\n"), out); |
b3054454 RM |
2113 | printf( " --help %s\n", USAGE_OPTSTR_HELP); |
2114 | printf( " --version %s\n", USAGE_OPTSTR_VERSION); | |
f45f3ec3 | 2115 | printf(USAGE_MAN_TAIL("agetty(8)")); |
70bedfa1 | 2116 | |
9325dbfd | 2117 | exit(EXIT_SUCCESS); |
6dbe3af9 KZ |
2118 | } |
2119 | ||
bde20e1b WF |
2120 | /* |
2121 | * Helper function reports errors to console or syslog. | |
2122 | * Will be used by log_err() and log_warn() therefore | |
2123 | * it takes a format as well as va_list. | |
2124 | */ | |
6dbe3af9 KZ |
2125 | #define str2cpy(b,s1,s2) strcat(strcpy(b,s1),s2) |
2126 | ||
bde20e1b | 2127 | static void dolog(int priority, const char *fmt, va_list ap) |
53d55042 | 2128 | { |
6dbe3af9 | 2129 | #ifndef USE_SYSLOG |
53d55042 | 2130 | int fd; |
6dbe3af9 | 2131 | #endif |
53d55042 SK |
2132 | char buf[BUFSIZ]; |
2133 | char *bp; | |
6dbe3af9 | 2134 | |
70bedfa1 KZ |
2135 | /* |
2136 | * If the diagnostic is reported via syslog(3), the process name is | |
2137 | * automatically prepended to the message. If we write directly to | |
2138 | * /dev/console, we must prepend the process name ourselves. | |
2139 | */ | |
6dbe3af9 | 2140 | #ifdef USE_SYSLOG |
70bedfa1 KZ |
2141 | buf[0] = '\0'; |
2142 | bp = buf; | |
6dbe3af9 | 2143 | #else |
53d55042 | 2144 | str2cpy(buf, program_invocation_short_name, ": "); |
70bedfa1 | 2145 | bp = buf + strlen(buf); |
53d55042 | 2146 | #endif /* USE_SYSLOG */ |
763d7a87 | 2147 | vsnprintf(bp, sizeof(buf)-strlen(buf), fmt, ap); |
6dbe3af9 | 2148 | |
70bedfa1 KZ |
2149 | /* |
2150 | * Write the diagnostic directly to /dev/console if we do not use the | |
2151 | * syslog(3) facility. | |
2152 | */ | |
6dbe3af9 | 2153 | #ifdef USE_SYSLOG |
53d55042 | 2154 | openlog(program_invocation_short_name, LOG_PID, LOG_AUTHPRIV); |
bde20e1b | 2155 | syslog(priority, "%s", buf); |
70bedfa1 | 2156 | closelog(); |
6dbe3af9 | 2157 | #else |
70bedfa1 | 2158 | /* Terminate with CR-LF since the console mode is unknown. */ |
53d55042 | 2159 | strcat(bp, "\r\n"); |
70bedfa1 | 2160 | if ((fd = open("/dev/console", 1)) >= 0) { |
729def03 | 2161 | write_all(fd, buf, strlen(buf)); |
53d55042 | 2162 | close(fd); |
70bedfa1 | 2163 | } |
53d55042 | 2164 | #endif /* USE_SYSLOG */ |
bde20e1b WF |
2165 | } |
2166 | ||
2167 | static void log_err(const char *fmt, ...) | |
2168 | { | |
2169 | va_list ap; | |
2170 | ||
2171 | va_start(ap, fmt); | |
2172 | dolog(LOG_ERR, fmt, ap); | |
2173 | va_end(ap); | |
2174 | ||
53d55042 SK |
2175 | /* Be kind to init(8). */ |
2176 | sleep(10); | |
70bedfa1 | 2177 | exit(EXIT_FAILURE); |
6dbe3af9 | 2178 | } |
bde20e1b WF |
2179 | |
2180 | static void log_warn(const char *fmt, ...) | |
2181 | { | |
2182 | va_list ap; | |
2183 | ||
2184 | va_start(ap, fmt); | |
2185 | dolog(LOG_WARNING, fmt, ap); | |
2186 | va_end(ap); | |
2187 | } | |
729def03 | 2188 | |
0f283438 | 2189 | static void print_addr(sa_family_t family, void *addr) |
2b945eda | 2190 | { |
0f283438 KZ |
2191 | char buff[INET6_ADDRSTRLEN + 1]; |
2192 | ||
2193 | inet_ntop(family, addr, buff, sizeof(buff)); | |
2194 | printf("%s", buff); | |
2195 | } | |
2196 | ||
2197 | /* | |
2198 | * Prints IP for the specified interface (@iface), if the interface is not | |
2199 | * specified then prints the "best" one (UP, RUNNING, non-LOOPBACK). If not | |
2200 | * found the "best" interface then prints at least host IP. | |
2201 | */ | |
2202 | static void output_iface_ip(struct ifaddrs *addrs, | |
2203 | const char *iface, | |
2204 | sa_family_t family) | |
2205 | { | |
2206 | struct ifaddrs *p; | |
2207 | struct addrinfo hints, *info = NULL; | |
2208 | char *host = NULL; | |
2209 | void *addr = NULL; | |
2210 | ||
2211 | if (!addrs) | |
2b945eda KZ |
2212 | return; |
2213 | ||
0f283438 | 2214 | for (p = addrs; p; p = p->ifa_next) { |
2b945eda | 2215 | |
0f283438 KZ |
2216 | if (!p->ifa_name || |
2217 | !p->ifa_addr || | |
2218 | p->ifa_addr->sa_family != family) | |
2219 | continue; | |
2220 | ||
2221 | if (iface) { | |
2222 | /* Filter out by interface name */ | |
2223 | if (strcmp(p->ifa_name, iface) != 0) | |
2224 | continue; | |
2225 | } else { | |
2226 | /* Select the "best" interface */ | |
2227 | if ((p->ifa_flags & IFF_LOOPBACK) || | |
2228 | !(p->ifa_flags & IFF_UP) || | |
2229 | !(p->ifa_flags & IFF_RUNNING)) | |
2230 | continue; | |
2231 | } | |
2b945eda | 2232 | |
0f283438 KZ |
2233 | addr = NULL; |
2234 | switch (p->ifa_addr->sa_family) { | |
2b945eda | 2235 | case AF_INET: |
0f283438 | 2236 | addr = &((struct sockaddr_in *) p->ifa_addr)->sin_addr; |
2b945eda KZ |
2237 | break; |
2238 | case AF_INET6: | |
0f283438 | 2239 | addr = &((struct sockaddr_in6 *) p->ifa_addr)->sin6_addr; |
2b945eda KZ |
2240 | break; |
2241 | } | |
0f283438 | 2242 | |
2b945eda | 2243 | if (addr) { |
0f283438 KZ |
2244 | print_addr(family, addr); |
2245 | return; | |
2b945eda | 2246 | } |
0f283438 | 2247 | } |
2b945eda | 2248 | |
0f283438 KZ |
2249 | if (iface) |
2250 | return; | |
2b945eda | 2251 | |
0f283438 | 2252 | /* Hmm.. not found the best interface, print host IP at least */ |
2b945eda KZ |
2253 | memset(&hints, 0, sizeof(hints)); |
2254 | hints.ai_family = family; | |
2255 | if (family == AF_INET6) | |
2256 | hints.ai_flags = AI_V4MAPPED; | |
2257 | ||
2448f336 KZ |
2258 | host = xgethostname(); |
2259 | if (host && getaddrinfo(host, NULL, &hints, &info) == 0 && info) { | |
2b945eda KZ |
2260 | switch (info->ai_family) { |
2261 | case AF_INET: | |
2262 | addr = &((struct sockaddr_in *) info->ai_addr)->sin_addr; | |
2263 | break; | |
2264 | case AF_INET6: | |
2265 | addr = &((struct sockaddr_in6 *) info->ai_addr)->sin6_addr; | |
2266 | break; | |
2267 | } | |
0f283438 KZ |
2268 | if (addr) |
2269 | print_addr(family, addr); | |
2b945eda KZ |
2270 | |
2271 | freeaddrinfo(info); | |
2272 | } | |
2448f336 | 2273 | free(host); |
2b945eda KZ |
2274 | } |
2275 | ||
2276 | /* | |
2277 | * parses \x{argument}, if not argument specified then returns NULL, the @fd | |
2278 | * has to point to one char after the sequence (it means '{'). | |
2279 | */ | |
2280 | static char *get_escape_argument(FILE *fd, char *buf, size_t bufsz) | |
2281 | { | |
2282 | size_t i = 0; | |
2283 | int c = fgetc(fd); | |
2284 | ||
2285 | if (c == EOF || (unsigned char) c != '{') { | |
2286 | ungetc(c, fd); | |
2287 | return NULL; | |
2288 | } | |
2289 | ||
2290 | do { | |
2291 | c = fgetc(fd); | |
2292 | if (c == EOF) | |
2293 | return NULL; | |
2294 | if ((unsigned char) c != '}' && i < bufsz - 1) | |
2295 | buf[i++] = (unsigned char) c; | |
2296 | ||
2297 | } while ((unsigned char) c != '}'); | |
2298 | ||
2299 | buf[i] = '\0'; | |
2300 | return buf; | |
2301 | } | |
2302 | ||
729def03 | 2303 | static void output_special_char(unsigned char c, struct options *op, |
2b945eda | 2304 | struct termios *tp, FILE *fp) |
729def03 WF |
2305 | { |
2306 | struct utsname uts; | |
763d7a87 | 2307 | |
729def03 | 2308 | switch (c) { |
583627ef | 2309 | case 'e': |
d689166b KZ |
2310 | { |
2311 | char escname[UL_COLORNAME_MAXSZ]; | |
2312 | ||
2313 | if (get_escape_argument(fp, escname, sizeof(escname))) { | |
2314 | const char *esc = color_sequence_from_colorname(escname); | |
2315 | if (esc) | |
2316 | fputs(esc, stdout); | |
2317 | } else | |
2318 | fputs("\033", stdout); | |
583627ef | 2319 | break; |
d689166b | 2320 | } |
729def03 | 2321 | case 's': |
10e8d7a3 | 2322 | uname(&uts); |
763d7a87 | 2323 | printf("%s", uts.sysname); |
729def03 WF |
2324 | break; |
2325 | case 'n': | |
10e8d7a3 | 2326 | uname(&uts); |
763d7a87 | 2327 | printf("%s", uts.nodename); |
729def03 WF |
2328 | break; |
2329 | case 'r': | |
10e8d7a3 | 2330 | uname(&uts); |
763d7a87 | 2331 | printf("%s", uts.release); |
729def03 WF |
2332 | break; |
2333 | case 'v': | |
10e8d7a3 | 2334 | uname(&uts); |
763d7a87 | 2335 | printf("%s", uts.version); |
729def03 WF |
2336 | break; |
2337 | case 'm': | |
10e8d7a3 | 2338 | uname(&uts); |
763d7a87 | 2339 | printf("%s", uts.machine); |
729def03 WF |
2340 | break; |
2341 | case 'o': | |
2342 | { | |
2448f336 KZ |
2343 | char *dom = xgetdomainname(); |
2344 | ||
2345 | fputs(dom ? dom : "unknown_domain", stdout); | |
2346 | free(dom); | |
729def03 WF |
2347 | break; |
2348 | } | |
2349 | case 'O': | |
2350 | { | |
2448f336 KZ |
2351 | char *dom = NULL; |
2352 | char *host = xgethostname(); | |
729def03 WF |
2353 | struct addrinfo hints, *info = NULL; |
2354 | ||
2355 | memset(&hints, 0, sizeof(hints)); | |
2356 | hints.ai_flags = AI_CANONNAME; | |
2357 | ||
2448f336 | 2358 | if (host && getaddrinfo(host, NULL, &hints, &info) == 0 && info) { |
729def03 | 2359 | char *canon; |
2448f336 | 2360 | |
729def03 WF |
2361 | if (info->ai_canonname && |
2362 | (canon = strchr(info->ai_canonname, '.'))) | |
2363 | dom = canon + 1; | |
729def03 | 2364 | } |
2448f336 KZ |
2365 | fputs(dom ? dom : "unknown_domain", stdout); |
2366 | if (info) | |
2367 | freeaddrinfo(info); | |
2368 | free(host); | |
729def03 WF |
2369 | break; |
2370 | } | |
2371 | case 'd': | |
2372 | case 't': | |
2373 | { | |
2374 | time_t now; | |
2375 | struct tm *tm; | |
2376 | ||
763d7a87 | 2377 | time(&now); |
729def03 WF |
2378 | tm = localtime(&now); |
2379 | ||
d9201203 KZ |
2380 | if (!tm) |
2381 | break; | |
2382 | ||
729def03 | 2383 | if (c == 'd') /* ISO 8601 */ |
763d7a87 | 2384 | printf("%s %s %d %d", |
729def03 WF |
2385 | nl_langinfo(ABDAY_1 + tm->tm_wday), |
2386 | nl_langinfo(ABMON_1 + tm->tm_mon), | |
2387 | tm->tm_mday, | |
2388 | tm->tm_year < 70 ? tm->tm_year + 2000 : | |
2389 | tm->tm_year + 1900); | |
2390 | else | |
763d7a87 | 2391 | printf("%02d:%02d:%02d", |
729def03 WF |
2392 | tm->tm_hour, tm->tm_min, tm->tm_sec); |
2393 | break; | |
2394 | } | |
2395 | case 'l': | |
763d7a87 | 2396 | printf ("%s", op->tty); |
729def03 WF |
2397 | break; |
2398 | case 'b': | |
2399 | { | |
2400 | const speed_t speed = cfgetispeed(tp); | |
2401 | int i; | |
2402 | ||
2403 | for (i = 0; speedtab[i].speed; i++) { | |
2404 | if (speedtab[i].code == speed) { | |
2405 | printf("%ld", speedtab[i].speed); | |
2406 | break; | |
2407 | } | |
2408 | } | |
2409 | break; | |
2410 | } | |
b34f097e KZ |
2411 | case 'S': |
2412 | { | |
2413 | char *var = NULL, varname[64]; | |
2414 | ||
1132e5aa KZ |
2415 | /* \S{varname} */ |
2416 | if (get_escape_argument(fp, varname, sizeof(varname))) { | |
b34f097e | 2417 | var = read_os_release(op, varname); |
1132e5aa KZ |
2418 | if (var) { |
2419 | if (strcmp(varname, "ANSI_COLOR") == 0) | |
2420 | printf("\033[%sm", var); | |
2421 | else | |
2422 | fputs(var, stdout); | |
2423 | } | |
2424 | /* \S */ | |
2425 | } else if ((var = read_os_release(op, "PRETTY_NAME"))) { | |
2426 | fputs(var, stdout); | |
2427 | ||
2428 | /* \S and PRETTY_NAME not found */ | |
2429 | } else { | |
10e8d7a3 | 2430 | uname(&uts); |
1132e5aa | 2431 | fputs(uts.sysname, stdout); |
b34f097e | 2432 | } |
1db24681 MG |
2433 | |
2434 | free(var); | |
2435 | ||
b34f097e KZ |
2436 | break; |
2437 | } | |
729def03 WF |
2438 | case 'u': |
2439 | case 'U': | |
2440 | { | |
2441 | int users = 0; | |
b4b919fe RM |
2442 | struct utmpx *ut; |
2443 | setutxent(); | |
2444 | while ((ut = getutxent())) | |
729def03 WF |
2445 | if (ut->ut_type == USER_PROCESS) |
2446 | users++; | |
b4b919fe | 2447 | endutxent(); |
729def03 | 2448 | if (c == 'U') |
9e531400 BS |
2449 | printf(P_("%d user", "%d users", users), users); |
2450 | else | |
2451 | printf ("%d ", users); | |
729def03 WF |
2452 | break; |
2453 | } | |
2b945eda KZ |
2454 | case '4': |
2455 | case '6': | |
2456 | { | |
2457 | sa_family_t family = c == '4' ? AF_INET : AF_INET6; | |
0f283438 | 2458 | struct ifaddrs *addrs = NULL; |
2b945eda KZ |
2459 | char iface[128]; |
2460 | ||
e36deb64 SW |
2461 | #ifdef AGETTY_RELOAD |
2462 | open_netlink(); | |
2463 | #endif | |
2464 | ||
0f283438 KZ |
2465 | if (getifaddrs(&addrs)) |
2466 | break; | |
2467 | ||
2468 | if (get_escape_argument(fp, iface, sizeof(iface))) | |
2b945eda | 2469 | output_iface_ip(addrs, iface, family); |
0f283438 KZ |
2470 | else |
2471 | output_iface_ip(addrs, NULL, family); | |
2472 | ||
2473 | freeifaddrs(addrs); | |
2b945eda KZ |
2474 | break; |
2475 | } | |
729def03 | 2476 | default: |
763d7a87 | 2477 | putchar(c); |
729def03 WF |
2478 | break; |
2479 | } | |
2480 | } | |
2481 | ||
2482 | static void init_special_char(char* arg, struct options *op) | |
2483 | { | |
2484 | char ch, *p, *q; | |
2485 | int i; | |
2486 | ||
ca8e91a4 KZ |
2487 | op->initstring = malloc(strlen(arg) + 1); |
2488 | if (!op->initstring) | |
2489 | log_err(_("failed to allocate memory: %m")); | |
729def03 WF |
2490 | |
2491 | /* | |
2492 | * Copy optarg into op->initstring decoding \ddd octal | |
2493 | * codes into chars. | |
2494 | */ | |
2495 | q = op->initstring; | |
2496 | p = arg; | |
2497 | while (*p) { | |
2498 | /* The \\ is converted to \ */ | |
2499 | if (*p == '\\') { | |
2500 | p++; | |
2501 | if (*p == '\\') { | |
2502 | ch = '\\'; | |
2503 | p++; | |
2504 | } else { | |
2505 | /* Handle \000 - \177. */ | |
2506 | ch = 0; | |
2507 | for (i = 1; i <= 3; i++) { | |
2508 | if (*p >= '0' && *p <= '7') { | |
2509 | ch <<= 3; | |
2510 | ch += *p - '0'; | |
2511 | p++; | |
2512 | } else { | |
2513 | break; | |
2514 | } | |
2515 | } | |
2516 | } | |
2517 | *q++ = ch; | |
2518 | } else | |
2519 | *q++ = *p++; | |
2520 | } | |
2521 | *q = '\0'; | |
2522 | } | |
eb8e1f9f | 2523 | |
a694957a | 2524 | /* |
a7349ee3 | 2525 | * Appends @str to @dest and if @dest is not empty then use @sep as a |
a694957a KZ |
2526 | * separator. The maximal final length of the @dest is @len. |
2527 | * | |
2528 | * Returns the final @dest length or -1 in case of error. | |
2529 | */ | |
2530 | static ssize_t append(char *dest, size_t len, const char *sep, const char *src) | |
2531 | { | |
2532 | size_t dsz = 0, ssz = 0, sz; | |
2533 | char *p; | |
2534 | ||
2535 | if (!dest || !len || !src) | |
2536 | return -1; | |
2537 | ||
2538 | if (*dest) | |
2539 | dsz = strlen(dest); | |
2540 | if (dsz && sep) | |
2541 | ssz = strlen(sep); | |
2542 | sz = strlen(src); | |
2543 | ||
2544 | if (dsz + ssz + sz + 1 > len) | |
2545 | return -1; | |
2546 | ||
2547 | p = dest + dsz; | |
2548 | if (ssz) { | |
2549 | memcpy(p, sep, ssz); | |
2550 | p += ssz; | |
2551 | } | |
2552 | memcpy(p, src, sz); | |
2553 | *(p + sz) = '\0'; | |
2554 | ||
2555 | return dsz + ssz + sz; | |
2556 | } | |
9aeb66dc | 2557 | |
eb8e1f9f WF |
2558 | /* |
2559 | * Do not allow the user to pass an option as a user name | |
2560 | * To be more safe: Use `--' to make sure the rest is | |
2561 | * interpreted as non-options by the program, if it supports it. | |
2562 | */ | |
9aeb66dc | 2563 | static void check_username(const char* nm) |
eb8e1f9f WF |
2564 | { |
2565 | const char *p = nm; | |
2566 | if (!nm) | |
2567 | goto err; | |
763d7a87 | 2568 | if (strlen(nm) > 42) |
eb8e1f9f | 2569 | goto err; |
763d7a87 | 2570 | while (isspace(*p)) |
eb8e1f9f WF |
2571 | p++; |
2572 | if (*p == '-') | |
2573 | goto err; | |
2574 | return; | |
2575 | err: | |
2576 | errno = EPERM; | |
8c219bf4 | 2577 | log_err(_("checkname failed: %m")); |
eb8e1f9f WF |
2578 | } |
2579 | ||
6443dd43 SW |
2580 | static void reload_agettys(void) |
2581 | { | |
2582 | #ifdef AGETTY_RELOAD | |
c9f5ec0f KZ |
2583 | int fd = open(AGETTY_RELOAD_FILENAME, O_CREAT|O_CLOEXEC|O_WRONLY, |
2584 | S_IRUSR|S_IWUSR); | |
6443dd43 | 2585 | if (fd < 0) |
54fefa07 | 2586 | err(EXIT_FAILURE, _("cannot open %s"), AGETTY_RELOAD_FILENAME); |
6443dd43 | 2587 | |
90d5285d | 2588 | if (futimens(fd, NULL) < 0 || close(fd) < 0) |
54fefa07 | 2589 | err(EXIT_FAILURE, _("cannot touch file %s"), |
6443dd43 SW |
2590 | AGETTY_RELOAD_FILENAME); |
2591 | #else | |
2592 | /* very unusual */ | |
1d231190 | 2593 | errx(EXIT_FAILURE, _("--reload is unsupported on your system")); |
6443dd43 SW |
2594 | #endif |
2595 | } |