3 * $Id: pixie.c,v 1.5 2000/07/29 22:05:22 mdw Exp $
5 * Passphrase pixie for Catacomb
7 * (c) 1999 Straylight/Edgeware
10 /*----- Licensing notice --------------------------------------------------*
12 * This file is part of Catacomb.
14 * Catacomb is free software; you can redistribute it and/or modify
15 * it under the terms of the GNU Library General Public License as
16 * published by the Free Software Foundation; either version 2 of the
17 * License, or (at your option) any later version.
19 * Catacomb is distributed in the hope that it will be useful,
20 * but WITHOUT ANY WARRANTY; without even the implied warranty of
21 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
22 * GNU Library General Public License for more details.
24 * You should have received a copy of the GNU Library General Public
25 * License along with Catacomb; if not, write to the Free
26 * Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
30 /*----- Revision history --------------------------------------------------*
33 * Revision 1.5 2000/07/29 22:05:22 mdw
34 * Miscellaneous tidyings:
36 * * Change the timeout to something more appropriate for real use.
38 * * Check assumptions about object types when binding the socket. In
39 * particular, don't zap the socket if it's really something else.
41 * * In @p_request@, return a failure if the shell command returned
42 * nonzero. Fix a bug in @p_get@ which incorrectly passes on a success
43 * code when this happens.
45 * * Dispose of the locked memory in client mode to avoid being
48 * * Also in client mode, don't report closure from the server if we're
49 * running noninteractively.
51 * * Insert a missing option letter into the usage string.
53 * * Change to the root directory after forking in daemon mode.
55 * Revision 1.4 2000/06/17 11:50:53 mdw
56 * New pixie protocol allowing application to request passphrases and send
57 * them to the pixie. Use the secure arena interface for the input
58 * buffer. Extend the input buffer. Other minor fixes.
60 * Revision 1.3 1999/12/22 22:14:40 mdw
61 * Only produce initialization message if verbose.
63 * Revision 1.2 1999/12/22 22:13:42 mdw
64 * Fix bug in passphrase flushing loop.
66 * Revision 1.1 1999/12/22 15:58:41 mdw
67 * Passphrase pixie support.
71 /*----- Header files ------------------------------------------------------*/
86 #include <sys/types.h>
93 #include <sys/ioctl.h>
97 #include <sys/socket.h>
100 #include <mLib/alloc.h>
101 #include <mLib/dstr.h>
102 #include <mLib/fdflags.h>
103 #include <mLib/mdwopt.h>
104 #include <mLib/quis.h>
105 #include <mLib/report.h>
106 #include <mLib/sel.h>
107 #include <mLib/selbuf.h>
108 #include <mLib/sig.h>
109 #include <mLib/str.h>
110 #include <mLib/sub.h>
115 #include "passphrase.h"
118 /*----- Static variables --------------------------------------------------*/
120 static unsigned long timeout = 900;
121 static sel_state sel;
122 static unsigned verbose = 1;
123 static const char *command = 0;
125 static unsigned flags = 0;
132 /*----- Event logging -----------------------------------------------------*/
136 * Arguments: @const char *p@ = @printf@-style format string
137 * @...@ = extra arguments to fill in
141 * Use: Writes out a timestamped log message.
144 static void log(const char *p, ...)
149 if (!(flags & F_SYSLOG)) {
151 struct tm *tm = localtime(&t);
153 d.len += strftime(d.buf, d.sz, "%Y-%m-%d %H:%M:%S ", tm);
156 dstr_vputf(&d, p, ap);
159 if (flags & F_SYSLOG)
160 syslog(LOG_NOTICE, "%s", d.buf);
163 dstr_write(&d, stderr);
168 /*----- Passphrase management ---------------------------------------------*/
170 /* --- Data structures --- */
172 typedef struct phrase {
182 /* --- Variables --- */
184 #define P_ROOT ((phrase *)&p_root)
185 static struct { phrase *next; phrase *prev; } p_root = { P_ROOT, P_ROOT };
187 /* --- @p_free@ --- *
189 * Arguments: @phrase *p@ = pointer to phrase block
193 * Use: Frees a phrase block.
196 static void p_free(phrase *p)
199 sel_rmtimer(&p->timer);
202 p->next->prev = p->prev;
203 p->prev->next = p->next;
207 /* --- @p_timer@ --- *
209 * Arguments: @struct timeval *tv@ = current time
210 * @void *p@ = pointer to phrase
214 * Use: Expires a passphrase.
217 static void p_timer(struct timeval *tv, void *p)
221 log("expiring passphrase `%s'", pp->tag);
225 /* --- @p_alloc@ --- *
227 * Arguments: @size_t sz@ = amount of memory required
229 * Returns: Pointer to allocated memory, or null.
231 * Use: Allocates some locked memory, flushing old passphrases if
232 * there's not enough space.
235 static void *p_alloc(size_t sz)
239 if ((p = l_alloc(&lm, sz)) != 0)
241 if (P_ROOT->next == P_ROOT)
244 log("flushing passphrase `%s' to free up needed space",
247 p_free(P_ROOT->next);
251 /* --- @p_find@ --- *
253 * Arguments: @const char *tag@ = pointer to tag to find
255 * Returns: Pointer to passphrase block, or null.
257 * Use: Finds a passphrase with a given tag.
260 static phrase *p_find(const char *tag)
264 for (p = P_ROOT->next; p != P_ROOT; p = p->next) {
265 if (strcmp(p->tag, tag) == 0) {
268 sel_rmtimer(&p->timer);
269 gettimeofday(&tv, 0);
271 sel_addtimer(&sel, &p->timer, &tv, p_timer, p);
273 p->next->prev = p->prev;
274 p->prev->next = p->next;
276 p->prev = P_ROOT->prev;
277 P_ROOT->prev->next = p;
287 * Arguments: @const char *tag@ = pointer to tag string
288 * @const char *p@ = pointer to passphrase
289 * @unsigned long t@ = expiry timeout
291 * Returns: Pointer to newly-added passphrase.
293 * Use: Adds a new passphrase. The tag must not already exist.
296 static phrase *p_add(const char *tag, const char *p, unsigned long t)
298 size_t sz = strlen(p) + 1;
299 char *l = p_alloc(sz);
302 /* --- Make sure the locked memory was allocated --- */
307 /* --- Fill in some other bits of the block --- */
312 pp->tag = xstrdup(tag);
315 /* --- Set the timer --- */
320 gettimeofday(&tv, 0);
322 sel_addtimer(&sel, &pp->timer, &tv, p_timer, pp);
325 /* --- Link the block into the chain --- */
328 pp->prev = P_ROOT->prev;
329 P_ROOT->prev->next = pp;
334 /* --- @p_flush@ --- *
336 * Arguments: @const char *tag@ = pointer to tag string, or zero for all
340 * Use: Immediately flushes either a single phrase or all of them.
343 static void p_flush(const char *tag)
347 if (!tag && verbose > 1)
348 log("flushing all passphrases");
350 while (p != P_ROOT) {
351 phrase *pp = p->next;
354 else if (strcmp(p->tag, tag) == 0) {
356 log("flushing passphrase `%s'", tag);
364 /*----- Reading passphrases -----------------------------------------------*/
366 /* --- @p_request@ --- *
368 * Arguments: @const char *msg@ = message string
369 * @const char *tag@ = pointer to tag string
370 * @char *buf@ = pointer to (locked) buffer
371 * @size_t sz@ = size of buffer
373 * Returns: Zero if all went well, nonzero otherwise.
375 * Use: Requests a passphrase from the user.
378 static int p_request(const char *msg, const char *tag, char *buf, size_t sz)
380 /* --- If there's a passphrase-fetching command, run it --- */
390 /* --- Substitute the prompt string into the command --- */
394 const char *q = strchr(p, '%');
417 /* --- Create a pipe and start a child process --- */
421 if ((kid = fork()) < 0)
424 /* --- Child process --- */
428 if (dup2(fd[1], STDOUT_FILENO) < 0)
431 execl("/bin/sh", "sh", "-c", d.buf, (void *)0);
435 /* --- Read the data back into my buffer --- */
438 if ((r = read(fd[0], buf, sz - 1)) >= 0) {
439 char *q = memchr(buf, '\n', r);
445 waitpid(kid, &rc, 0);
447 if (r < 0 || rc != 0)
451 /* --- Tidy up when things go wrong --- */
462 /* --- Read a passphrase from the terminal --- *
464 * Use the standard Catacomb passphrase-reading function, so it'll read the
465 * passphrase from a file descriptor or something if the appropriate
466 * environment variable is set.
472 dstr_putf(&d, "%s %s: ", msg, tag);
473 rc = pixie_getpass(d.buf, buf, sz);
480 /* --- Sort out the buffer --- *
482 * Strip leading spaces.
488 while (isspace((unsigned char)*p))
491 memmove(buf, p, len);
502 * Arguments: @const char **q@ = where to store the result
503 * @const char *tag@ = pointer to tag string
504 * @unsigned mode@ = reading mode (verify?)
505 * @time_t exp@ = expiry time suggestion
507 * Returns: Zero if successful, @-1@ on a read failure, or @+1@ if the
508 * passphrase is missing and there is no fetcher. (This will
509 * always happen if there is no fetcher and @mode@ is
512 * Use: Reads a passphrase from somewhere.
515 static int p_get(const char **q, const char *tag, unsigned mode, time_t exp)
522 /* --- Write a log message --- */
525 log("passphrase `%s' requested", tag);
527 /* --- If there is no fetcher, life is simpler --- */
529 if (!(flags & F_FETCH)) {
530 if (mode == PMODE_VERIFY)
532 if ((p = p_find(tag)) == 0)
538 /* --- Try to find the phrase --- */
540 if (mode == PMODE_VERIFY)
542 if (mode == PMODE_VERIFY || (p = p_find(tag)) == 0) {
543 if ((pp = p_alloc(LBUFSZ)) == 0)
545 if (p_request(mode == PMODE_READ ? "Passphrase" : "New passphrase",
546 tag, pp, LBUFSZ) < 0)
548 p = p_add(tag, pp, exp);
553 /* --- If verification is requested, verify the passphrase --- */
555 if (mode == PMODE_VERIFY) {
556 if (!pp && (pp = p_alloc(LBUFSZ)) == 0)
558 if (p_request("Verify passphrase", tag, pp, LBUFSZ) < 0)
560 if (strcmp(pp, p->p) != 0) {
562 log("passphrases for `%s' don't match", tag);
568 /* --- Tidy up and return the passphrase --- */
571 memset(pp, 0, LBUFSZ);
577 /* --- Tidy up if things went wrong --- */
581 memset(pp, 0, LBUFSZ);
589 /*----- Server command parsing --------------------------------------------*/
591 /* --- Data structures --- */
593 typedef struct pixserv {
600 enum { px_stdin = 1 };
602 #define PIXSERV_TIMEOUT 30
604 /* --- @pixserv_expire@ --- *
606 * Arguments: @struct timeval *tv@ = pointer to current time
607 * @void *p@ = pointer to server block
611 * Use: Expires a pixie connection if the remote end decides he's not
612 * interested any more.
615 static void pixserv_expire(struct timeval *tv, void *p)
618 if (px->fd != px->b.reader.fd)
620 selbuf_destroy(&px->b);
621 close(px->b.reader.fd);
625 /* --- @pixserv_write@ --- *
627 * Arguments: @pixserv *px@ = pointer to server block
628 * @const char *p@ = pointer to skeleton string
629 * @...@ = other arguments to fill in
633 * Use: Formats a string and emits it to the output file.
636 static void pixserv_write(pixserv *px, const char *p, ...)
642 dstr_vputf(&d, p, ap);
643 write(px->fd, d.buf, d.len);
648 /* --- @pixserv_timeout@ --- *
650 * Arguments: @const char *p@ = pointer to timeout string
652 * Returns: Timeout in seconds.
654 * Use: Translates a string to a timeout value in seconds.
657 static unsigned long pixserv_timeout(const char *p)
665 t = strtoul(p, &q, 0);
670 case 's': if (q[1] != 0)
677 /* --- @pixserv_line@ --- *
679 * Arguments: @char *s@ = pointer to the line read
680 * @void *p@ = pointer to server block
684 * Use: Handles a line read from the client.
687 static void pixserv_line(char *s, void *p)
693 /* --- Handle an end-of-file --- */
695 if (!(px->f & px_stdin))
696 sel_rmtimer(&px->timer);
698 if (px->fd != px->b.reader.fd)
700 selbuf_destroy(&px->b);
701 close(px->b.reader.fd);
705 /* --- Fiddle the timeout --- */
707 if (!(px->f & px_stdin)) {
709 gettimeofday(&tv, 0);
710 tv.tv_sec += PIXSERV_TIMEOUT;
711 sel_addtimer(&sel, &px->timer, &tv, pixserv_expire, px);
714 /* --- Scan out the first word --- */
716 if ((q = str_getword(&s)) == 0)
718 for (qq = q; *qq; qq++)
719 *qq = tolower((unsigned char)*qq);
721 /* --- Handle a help request --- */
723 if (strcmp(q, "help") == 0) {
725 INFO Commands supported:\n\
728 INFO PASS tag [expire]\n\
729 INFO VERIFY tag [expire]\n\
731 INFO SET tag [expire] -- phrase\n\
737 /* --- List the passphrases --- */
739 else if (strcmp(q, "list") == 0) {
742 for (p = P_ROOT->next; p != P_ROOT; p = p->next) {
744 pixserv_write(px, "ITEM %s no-expire\n", p->tag);
747 gettimeofday(&tv, 0);
748 TV_SUB(&tv, &p->timer.tv, &tv);
749 pixserv_write(px, "ITEM %s %i\n", p->tag, tv.tv_sec);
752 pixserv_write(px, "OK\n");
755 /* --- Request a passphrase --- */
757 else if ((mode = PMODE_READ, strcmp(q, "pass") == 0) ||
758 (mode = PMODE_VERIFY, strcmp(q, "verify") == 0)) {
763 if ((q = str_getword(&s)) == 0)
764 pixserv_write(px, "FAIL missing tag\n");
765 else if ((t = pixserv_timeout(s)) == 0)
766 pixserv_write(px, "FAIL bad timeout\n");
768 rc = p_get(&p, q, mode, t > timeout ? timeout : t);
771 pixserv_write(px, "OK %s\n", p);
774 pixserv_write(px, "FAIL error reading passphrase\n");
777 pixserv_write(px, "MISSING\n");
783 /* --- Flush existing passphrases --- */
785 else if (strcmp(q, "flush") == 0) {
788 pixserv_write(px, "OK\n");
791 /* --- Set a passphrase --- */
793 else if (strcmp(q, "set") == 0) {
796 if ((tag = str_getword(&s)) == 0)
797 pixserv_write(px, "FAIL missing tag\n");
798 else if ((q = str_getword(&s)) == 0)
799 pixserv_write(px, "FAIL no passphrase\n");
801 if (strcmp(q, "--") != 0) {
802 t = pixserv_timeout(q);
805 t = pixserv_timeout(0);
807 pixserv_write(px, "FAIL no passphrase\n");
808 else if (strcmp(q, "--") != 0)
809 pixserv_write(px, "FAIL rubbish found before passphrase\n");
813 pixserv_write(px, "OK\n");
818 /* --- Shut the server down --- */
820 else if (strcmp(q, "quit") == 0) {
822 log("%s client requested shutdown",
823 px->f & px_stdin ? "local" : "remote");
824 pixserv_write(px, "OK\n");
828 /* --- Report an error for other commands --- */
831 pixserv_write(px, "FAIL unknown command `%s'\n", q);
834 /* --- @pixserv_create@ --- *
836 * Arguments: @int fd@ = file descriptor to read from
837 * @int ofd@ = file descriptor to write to
839 * Returns: Pointer to the new connection.
841 * Use: Creates a new Pixie server instance for a new connection.
844 static pixserv *pixserv_create(int fd, int ofd)
846 pixserv *px = CREATE(pixserv);
848 fdflags(fd, O_NONBLOCK, O_NONBLOCK, FD_CLOEXEC, FD_CLOEXEC);
850 fdflags(ofd, O_NONBLOCK, O_NONBLOCK, FD_CLOEXEC, FD_CLOEXEC);
852 selbuf_init(&px->b, &sel, fd, pixserv_line, px);
853 px->b.b.a = arena_secure;
854 selbuf_setsize(&px->b, 1024);
855 gettimeofday(&tv, 0);
856 tv.tv_sec += PIXSERV_TIMEOUT;
857 sel_addtimer(&sel, &px->timer, &tv, pixserv_expire, px);
862 /* --- @pixserv_accept@ --- *
864 * Arguments: @int fd@ = file descriptor
865 * @unsigned mode@ = what's happened
866 * @void *p@ = an uninteresting argument
870 * Use: Accepts a new connection.
873 static void pixserv_accept(int fd, unsigned mode, void *p)
876 struct sockaddr_un sun;
877 int sunsz = sizeof(sun);
879 if (mode != SEL_READ)
881 if ((nfd = accept(fd, (struct sockaddr *)&sun, &sunsz)) < 0) {
883 log("new connection failed: %s", strerror(errno));
886 pixserv_create(nfd, nfd);
889 /*----- Setting up the server ---------------------------------------------*/
891 /* --- @unlinksocket@ --- *
897 * Use: Tidies up the socket when it's finished with.
900 static char *sockpath;
902 static void unlinksocket(void)
908 /* --- @pix_sigdie@ --- *
910 * Arguments: @int sig@ = signal number
911 * @void *p@ = uninteresting argument
915 * Use: Shuts down the program after a fatal signal.
918 static void pix_sigdie(int sig, void *p)
925 case SIGTERM: p = "SIGTERM"; break;
926 case SIGINT: p = "SIGINT"; break;
928 sprintf(buf, "signal %i", sig);
932 log("shutting down on %s", p);
937 /* --- @pix_sigflush@ --- *
939 * Arguments: @int sig@ = signal number
940 * @void *p@ = uninteresting argument
944 * Use: Flushes the passphrase cache on receipt of a signal.
947 static void pix_sigflush(int sig, void *p)
954 case SIGHUP: p = "SIGHUP"; break;
955 case SIGQUIT: p = "SIGQUIT"; break;
957 sprintf(buf, "signal %i", sig);
961 log("received %s; flushing passphrases", p);
966 /* --- @pix_setup@ --- *
968 * Arguments: @struct sockaddr_un *sun@ = pointer to address to use
969 * @size_t sz@ = size of socket address
973 * Use: Sets up the pixie's Unix-domain socket.
976 static void pix_setup(struct sockaddr_un *sun, size_t sz)
980 /* --- Set up the parent directory --- */
983 char *p = sun->sun_path;
984 char *q = strrchr(p, '/');
994 if (stat(d.buf, &st))
995 die(1, "couldn't stat `%s': %s", d.buf, strerror(errno));
996 if (!S_ISDIR(st.st_mode))
997 die(1, "object `%s' isn't a directory", d.buf);
998 if (st.st_mode & 0077)
999 die(1, "parent directory `%s' has group or world access", d.buf);
1004 /* --- Initialize the socket --- */
1012 if ((fd = socket(PF_UNIX, SOCK_STREAM, 0)) < 0)
1013 die(1, "couldn't create socket: %s", strerror(errno));
1014 if (bind(fd, (struct sockaddr *)sun, sz) < 0) {
1016 if (errno != EADDRINUSE)
1017 die(1, "couldn't bind to address: %s", strerror(e));
1019 die(1, "too many retries; giving up");
1021 if (connect(fd, (struct sockaddr *)sun, sz)) {
1023 if (errno != ECONNREFUSED)
1024 die(1, "couldn't bind to address: %s", strerror(e));
1025 if (stat(sun->sun_path, &st))
1026 die(1, "couldn't stat `%s': %s", sun->sun_path, strerror(errno));
1027 if (!S_ISSOCK(st.st_mode))
1028 die(1, "object `%s' isn't a socket", sun->sun_path);
1030 log("stale socket found; removing it");
1031 unlink(sun->sun_path);
1035 log("server already running; shutting it down");
1036 write(fd, "QUIT\n", 5);
1042 chmod(sun->sun_path, 0600);
1043 fdflags(fd, O_NONBLOCK, O_NONBLOCK, FD_CLOEXEC, FD_CLOEXEC);
1045 die(1, "couldn't listen on socket: %s", strerror(errno));
1048 /* --- Set up the rest of the server --- */
1051 static sel_file serv;
1052 sockpath = sun->sun_path;
1053 atexit(unlinksocket);
1054 sel_initfile(&sel, &serv, fd, SEL_READ, pixserv_accept, 0);
1059 /*----- Client support code -----------------------------------------------*/
1061 /* --- Variables --- */
1063 static selbuf c_server, c_client;
1065 enum { cf_uclose = 1, cf_sclose = 2 };
1067 /* --- Line handler functions --- */
1069 static void c_uline(char *s, void *p)
1073 selbuf_destroy(&c_client);
1074 shutdown(c_server.reader.fd, 1);
1075 c_flags |= cf_uclose;
1079 write(c_server.reader.fd, s, sz);
1083 static void c_sline(char *s, void *p)
1086 selbuf_destroy(&c_server);
1087 if (!(c_flags & cf_uclose)) {
1088 moan("server closed the connection");
1089 selbuf_destroy(&c_client);
1096 /* --- @pix_client@ --- *
1098 * Arguments: @struct sockaddr_un *sun@ = pointer to socket address
1099 * @size_t sz@ = size of socket address
1100 * @char *argv[]@ = pointer to arguments to send
1104 * Use: Performs client-side actions for the passphrase pixie.
1107 static void pix_client(struct sockaddr_un *sun, size_t sz, char *argv[])
1111 /* --- Dispose of locked memory --- */
1115 /* --- Open the socket --- */
1117 if ((fd = socket(PF_UNIX, SOCK_STREAM, 0)) < 0)
1118 die(1, "couldn't create socket: %s", strerror(errno));
1119 if (connect(fd, (struct sockaddr *)sun, sz))
1120 die(1, "couldn't connect to server: %s", strerror(errno));
1121 selbuf_init(&c_server, &sel, fd, c_sline, 0);
1123 /* --- If there are any arguments, turn them into a string --- */
1126 selbuf_init(&c_client, &sel, STDIN_FILENO, c_uline, 0);
1135 write(fd, d.buf, d.len);
1137 c_flags |= cf_uclose;
1141 /* --- And repeat --- */
1147 /*----- Main code ---------------------------------------------------------*/
1149 /* --- @help@, @version@, @usage@ --- *
1151 * Arguments: @FILE *fp@ = stream to write on
1155 * Use: Emit helpful messages.
1158 static void usage(FILE *fp)
1162 $ [-qvfidl] [-c command] [-t timeout] [-s socket]\n\
1163 $ [-s socket] -C [command args...]\n\
1167 static void version(FILE *fp)
1169 pquis(fp, "$, Catacomb version " VERSION "\n");
1172 static void help(FILE *fp)
1178 The Catacomb passphrase pixie collects and caches passphrases used to\n\
1179 protect important keys. Options provided:\n\
1181 -h, --help Show this help text.\n\
1182 -V, --version Show the program's version number.\n\
1183 -u, --usage Show a (very) terse usage summary.\n\
1185 -C, --client Connect to a running pixie as a client.\n\
1187 -q, --quiet Emit fewer log messages.\n\
1188 -v, --version Emit more log messages.\n\
1189 -s, --socket=FILE Name the pixie's socket.\n\
1190 -c, --command=COMMAND Shell command to read a passphrase.\n\
1191 -f, --fetch Fetch passphrases from the terminal.\n\
1192 -t, --timeout=TIMEOUT Length of time to retain a passphrase in memory.\n\
1193 -i, --interactive Allow commands to be typed interactively.\n\
1194 -d, --daemon Fork into the background after initialization.\n\
1195 -l, --syslog Emit log messages to the system log.\n\
1197 The COMMAND may contain `%m' and `%t' markers which are replaced by a\n\
1198 prompt message and the passphrase tag respectively. The TIMEOUT is an\n\
1199 integer, optionally followed by `d', `h', `m' or `s' to specify units of\n\
1200 days, hours, minutes or seconds respectively.\n\
1202 In client mode, if a command is specified on the command line, it is sent\n\
1203 to the running server; otherwise the program reads requests from stdin.\n\
1204 Responses from the pixie are written to stdout. Send a HELP request for\n\
1205 a quick summary of the pixie communication protocol.\n\
1211 * Arguments: @int argc@ = number of arguments
1212 * @char *argv[]@ = vector of argument values
1214 * Returns: Zero if OK.
1216 * Use: Main program. Listens on a socket and responds with a PGP
1217 * passphrase when asked.
1220 int main(int argc, char *argv[])
1223 struct sockaddr_un *sun;
1235 /* --- Initialize libraries --- */
1240 /* --- Set up the locked memory area --- */
1245 /* --- Parse command line arguments --- */
1248 static struct option opts[] = {
1250 /* --- Standard GNUy help options --- */
1252 { "help", 0, 0, 'h' },
1253 { "version", 0, 0, 'V' },
1254 { "usage", 0, 0, 'u' },
1256 /* --- Other options --- */
1258 { "quiet", 0, 0, 'q' },
1259 { "verbose", 0, 0, 'v' },
1260 { "client", 0, 0, 'C' },
1261 { "socket", OPTF_ARGREQ, 0, 's' },
1262 { "command", OPTF_ARGREQ, 0, 'c' },
1263 { "fetch", 0, 0, 'f' },
1264 { "timeout", OPTF_ARGREQ, 0, 't' },
1265 { "interactive", 0, 0, 'i' },
1266 { "stdin", 0, 0, 'i' },
1267 { "daemon", 0, 0, 'd' },
1268 { "log", 0, 0, 'l' },
1269 { "syslog", 0, 0, 'l' },
1271 /* --- Magic terminator --- */
1276 int i = mdwopt(argc, argv, "hVuqvCs:c:ft:idl", opts, 0, 0, 0);
1282 /* --- GNUy help options --- */
1294 /* --- Other interesting things --- */
1310 if ((timeout = pixserv_timeout(optarg)) == 0)
1311 die(1, "bad timeout `%s'", optarg);
1330 /* --- Something else --- */
1338 if (f & f_bogus || (optind < argc && !(f & f_client))) {
1343 /* --- Set up the socket address --- */
1345 sun = pixie_address(path, &sz);
1347 /* --- Initialize selectory --- */
1350 signal(SIGPIPE, SIG_IGN);
1352 /* --- Be a client if a client's wanted --- */
1355 pix_client(sun, sz, argv + optind);
1357 /* --- Open the syslog if requested --- */
1361 openlog(QUIS, 0, LOG_DAEMON);
1364 /* --- Check on the locked memory area --- */
1368 int rc = l_report(&lm, &d);
1370 die(EXIT_FAILURE, d.buf);
1371 else if (rc && verbose) {
1373 log("couldn't lock passphrase buffer");
1376 arena_setsecure(&lm.a);
1379 /* --- Set signal behaviours --- */
1382 static sig sigint, sigterm, sigquit, sighup;
1384 sig_add(&sigint, SIGINT, pix_sigdie, 0);
1385 sig_add(&sigterm, SIGTERM, pix_sigdie, 0);
1386 sig_add(&sigquit, SIGQUIT, pix_sigflush, 0);
1387 sig_add(&sighup, SIGHUP, pix_sigflush, 0);
1390 /* --- Set up the server --- */
1394 pixserv *px = pixserv_create(STDIN_FILENO, STDOUT_FILENO);
1395 sel_rmtimer(&px->timer);
1399 /* --- Fork into the background if requested --- */
1404 if (((f & f_stdin) &&
1405 (isatty(STDIN_FILENO) || isatty(STDOUT_FILENO))) ||
1406 (!command && (flags & F_FETCH)))
1407 die(1, "can't become a daemon if terminal required");
1409 if ((kid = fork()) < 0)
1410 die(1, "fork failed: %s", strerror(errno));
1416 if ((fd = open("/dev/tty", O_RDONLY)) >= 0) {
1417 ioctl(fd, TIOCNOTTY);
1430 log("initialized ok");
1436 /*----- That's all, folks -------------------------------------------------*/