3 * $Id: pixie.c,v 1.4 2000/06/17 11:50:53 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 1.4 2000/06/17 11:50:53 mdw
34 * New pixie protocol allowing application to request passphrases and send
35 * them to the pixie. Use the secure arena interface for the input
36 * buffer. Extend the input buffer. Other minor fixes.
38 * Revision 1.3 1999/12/22 22:14:40 mdw
39 * Only produce initialization message if verbose.
41 * Revision 1.2 1999/12/22 22:13:42 mdw
42 * Fix bug in passphrase flushing loop.
44 * Revision 1.1 1999/12/22 15:58:41 mdw
45 * Passphrase pixie support.
49 /*----- Header files ------------------------------------------------------*/
64 #include <sys/types.h>
71 #include <sys/ioctl.h>
75 #include <sys/socket.h>
78 #include <mLib/alloc.h>
79 #include <mLib/dstr.h>
80 #include <mLib/fdflags.h>
81 #include <mLib/mdwopt.h>
82 #include <mLib/quis.h>
83 #include <mLib/report.h>
85 #include <mLib/selbuf.h>
93 #include "passphrase.h"
96 /*----- Static variables --------------------------------------------------*/
98 static unsigned long timeout
= 300;
100 static unsigned verbose
= 1;
101 static const char *command
= 0;
103 static unsigned flags
= 0;
110 /*----- Event logging -----------------------------------------------------*/
114 * Arguments: @const char *p@ = @printf@-style format string
115 * @...@ = extra arguments to fill in
119 * Use: Writes out a timestamped log message.
122 static void log(const char *p
, ...)
127 if (!(flags
& F_SYSLOG
)) {
129 struct tm
*tm
= localtime(&t
);
131 d
.len
+= strftime(d
.buf
, d
.sz
, "%Y-%m-%d %H:%M:%S ", tm
);
134 dstr_vputf(&d
, p
, ap
);
137 if (flags
& F_SYSLOG
)
138 syslog(LOG_NOTICE
, "%s", d
.buf
);
141 dstr_write(&d
, stderr
);
146 /*----- Passphrase management ---------------------------------------------*/
148 /* --- Data structures --- */
150 typedef struct phrase
{
160 /* --- Variables --- */
162 #define P_ROOT ((phrase *)&p_root)
163 static struct { phrase
*next
; phrase
*prev
; } p_root
= { P_ROOT
, P_ROOT
};
165 /* --- @p_free@ --- *
167 * Arguments: @phrase *p@ = pointer to phrase block
171 * Use: Frees a phrase block.
174 static void p_free(phrase
*p
)
177 sel_rmtimer(&p
->timer
);
180 p
->next
->prev
= p
->prev
;
181 p
->prev
->next
= p
->next
;
185 /* --- @p_timer@ --- *
187 * Arguments: @struct timeval *tv@ = current time
188 * @void *p@ = pointer to phrase
192 * Use: Expires a passphrase.
195 static void p_timer(struct timeval
*tv
, void *p
)
199 log("expiring passphrase `%s'", pp
->tag
);
203 /* --- @p_alloc@ --- *
205 * Arguments: @size_t sz@ = amount of memory required
207 * Returns: Pointer to allocated memory, or null.
209 * Use: Allocates some locked memory, flushing old passphrases if
210 * there's not enough space.
213 static void *p_alloc(size_t sz
)
217 if ((p
= l_alloc(&lm
, sz
)) != 0)
219 if (P_ROOT
->next
== P_ROOT
)
222 log("flushing passphrase `%s' to free up needed space",
225 p_free(P_ROOT
->next
);
229 /* --- @p_find@ --- *
231 * Arguments: @const char *tag@ = pointer to tag to find
233 * Returns: Pointer to passphrase block, or null.
235 * Use: Finds a passphrase with a given tag.
238 static phrase
*p_find(const char *tag
)
242 for (p
= P_ROOT
->next
; p
!= P_ROOT
; p
= p
->next
) {
243 if (strcmp(p
->tag
, tag
) == 0) {
246 sel_rmtimer(&p
->timer
);
247 gettimeofday(&tv
, 0);
249 sel_addtimer(&sel
, &p
->timer
, &tv
, p_timer
, p
);
251 p
->next
->prev
= p
->prev
;
252 p
->prev
->next
= p
->next
;
254 p
->prev
= P_ROOT
->prev
;
255 P_ROOT
->prev
->next
= p
;
265 * Arguments: @const char *tag@ = pointer to tag string
266 * @const char *p@ = pointer to passphrase
267 * @unsigned long t@ = expiry timeout
269 * Returns: Pointer to newly-added passphrase.
271 * Use: Adds a new passphrase. The tag must not already exist.
274 static phrase
*p_add(const char *tag
, const char *p
, unsigned long t
)
276 size_t sz
= strlen(p
) + 1;
277 char *l
= p_alloc(sz
);
280 /* --- Make sure the locked memory was allocated --- */
285 /* --- Fill in some other bits of the block --- */
290 pp
->tag
= xstrdup(tag
);
293 /* --- Set the timer --- */
298 gettimeofday(&tv
, 0);
300 sel_addtimer(&sel
, &pp
->timer
, &tv
, p_timer
, pp
);
303 /* --- Link the block into the chain --- */
306 pp
->prev
= P_ROOT
->prev
;
307 P_ROOT
->prev
->next
= pp
;
312 /* --- @p_flush@ --- *
314 * Arguments: @const char *tag@ = pointer to tag string, or zero for all
318 * Use: Immediately flushes either a single phrase or all of them.
321 static void p_flush(const char *tag
)
325 if (!tag
&& verbose
> 1)
326 log("flushing all passphrases");
328 while (p
!= P_ROOT
) {
329 phrase
*pp
= p
->next
;
332 else if (strcmp(p
->tag
, tag
) == 0) {
334 log("flushing passphrase `%s'", tag
);
342 /*----- Reading passphrases -----------------------------------------------*/
344 /* --- @p_request@ --- *
346 * Arguments: @const char *msg@ = message string
347 * @const char *tag@ = pointer to tag string
348 * @char *buf@ = pointer to (locked) buffer
349 * @size_t sz@ = size of buffer
351 * Returns: Zero if all went well, nonzero otherwise.
353 * Use: Requests a passphrase from the user.
356 static int p_request(const char *msg
, const char *tag
, char *buf
, size_t sz
)
358 /* --- If there's a passphrase-fetching command, run it --- */
367 /* --- Substitute the prompt string into the command --- */
371 const char *q
= strchr(p
, '%');
394 /* --- Create a pipe and start a child process --- */
398 if ((kid
= fork()) < 0)
401 /* --- Child process --- */
405 if (dup2(fd
[1], STDOUT_FILENO
) < 0)
408 execl("/bin/sh", "sh", "-c", d
.buf
, (void *)0);
412 /* --- Read the data back into my buffer --- */
415 if ((r
= read(fd
[0], buf
, sz
- 1)) >= 0) {
416 char *q
= memchr(buf
, '\n', r
);
428 /* --- Tidy up when things go wrong --- */
439 /* --- Read a passphrase from the terminal --- *
441 * Use the standard Catacomb passphrase-reading function, so it'll read the
442 * passphrase from a file descriptor or something if the appropriate
443 * environment variable is set.
449 dstr_putf(&d
, "%s %s: ", msg
, tag
);
450 rc
= pixie_getpass(d
.buf
, buf
, sz
);
457 /* --- Sort out the buffer --- *
459 * Strip leading spaces.
465 while (isspace((unsigned char)*p
))
468 memmove(buf
, p
, len
);
479 * Arguments: @const char **q@ = where to store the result
480 * @const char *tag@ = pointer to tag string
481 * @unsigned mode@ = reading mode (verify?)
482 * @time_t exp@ = expiry time suggestion
484 * Returns: Zero if successful, @-1@ on a read failure, or @+1@ if the
485 * passphrase is missing and there is no fetcher. (This will
486 * always happen if there is no fetcher and @mode@ is
489 * Use: Reads a passphrase from somewhere.
492 static int p_get(const char **q
, const char *tag
, unsigned mode
, time_t exp
)
499 /* --- Write a log message --- */
502 log("passphrase `%s' requested", tag
);
504 /* --- If there is no fetcher, life is simpler --- */
506 if (!(flags
& F_FETCH
)) {
507 if (mode
== PMODE_VERIFY
)
509 if ((p
= p_find(tag
)) == 0)
515 /* --- Try to find the phrase --- */
517 if (mode
== PMODE_VERIFY
)
519 if (mode
== PMODE_VERIFY
|| (p
= p_find(tag
)) == 0) {
520 if ((pp
= p_alloc(LBUFSZ
)) == 0)
522 if (p_request(mode
== PMODE_READ ?
"Passphrase" : "New passphrase",
523 tag
, pp
, LBUFSZ
) < 0)
525 p
= p_add(tag
, pp
, exp
);
530 /* --- If verification is requested, verify the passphrase --- */
532 if (mode
== PMODE_VERIFY
) {
533 if (!pp
&& (pp
= p_alloc(LBUFSZ
)) == 0)
535 if (p_request("Verify passphrase", tag
, pp
, LBUFSZ
) < 0)
537 if (strcmp(pp
, p
->p
) != 0) {
539 log("passphrases for `%s' don't match", tag
);
545 /* --- Tidy up and return the passphrase --- */
548 memset(pp
, 0, LBUFSZ
);
554 /* --- Tidy up if things went wrong --- */
558 memset(pp
, 0, LBUFSZ
);
566 /*----- Server command parsing --------------------------------------------*/
568 /* --- Data structures --- */
570 typedef struct pixserv
{
577 enum { px_stdin
= 1 };
579 #define PIXSERV_TIMEOUT 30
581 /* --- @pixserv_expire@ --- *
583 * Arguments: @struct timeval *tv@ = pointer to current time
584 * @void *p@ = pointer to server block
588 * Use: Expires a pixie connection if the remote end decides he's not
589 * interested any more.
592 static void pixserv_expire(struct timeval
*tv
, void *p
)
595 if (px
->fd
!= px
->b
.reader
.fd
)
597 selbuf_destroy(&px
->b
);
598 close(px
->b
.reader
.fd
);
602 /* --- @pixserv_write@ --- *
604 * Arguments: @pixserv *px@ = pointer to server block
605 * @const char *p@ = pointer to skeleton string
606 * @...@ = other arguments to fill in
610 * Use: Formats a string and emits it to the output file.
613 static void pixserv_write(pixserv
*px
, const char *p
, ...)
619 dstr_vputf(&d
, p
, ap
);
620 write(px
->fd
, d
.buf
, d
.len
);
625 /* --- @pixserv_timeout@ --- *
627 * Arguments: @const char *p@ = pointer to timeout string
629 * Returns: Timeout in seconds.
631 * Use: Translates a string to a timeout value in seconds.
634 static unsigned long pixserv_timeout(const char *p
)
642 t
= strtoul(p
, &q
, 0);
647 case 's': if (q
[1] != 0)
654 /* --- @pixserv_line@ --- *
656 * Arguments: @char *s@ = pointer to the line read
657 * @void *p@ = pointer to server block
661 * Use: Handles a line read from the client.
664 static void pixserv_line(char *s
, void *p
)
670 /* --- Handle an end-of-file --- */
672 if (!(px
->f
& px_stdin
))
673 sel_rmtimer(&px
->timer
);
675 if (px
->fd
!= px
->b
.reader
.fd
)
677 selbuf_destroy(&px
->b
);
678 close(px
->b
.reader
.fd
);
682 /* --- Fiddle the timeout --- */
684 if (!(px
->f
& px_stdin
)) {
686 gettimeofday(&tv
, 0);
687 tv
.tv_sec
+= PIXSERV_TIMEOUT
;
688 sel_addtimer(&sel
, &px
->timer
, &tv
, pixserv_expire
, px
);
691 /* --- Scan out the first word --- */
693 if ((q
= str_getword(&s
)) == 0)
695 for (qq
= q
; *qq
; qq
++)
696 *qq
= tolower((unsigned char)*qq
);
698 /* --- Handle a help request --- */
700 if (strcmp(q
, "help") == 0) {
702 INFO Commands supported:\n\
705 INFO PASS tag [expire]\n\
706 INFO VERIFY tag [expire]\n\
708 INFO SET tag [expire] -- phrase\n\
714 /* --- List the passphrases --- */
716 else if (strcmp(q
, "list") == 0) {
719 for (p
= P_ROOT
->next
; p
!= P_ROOT
; p
= p
->next
) {
721 pixserv_write(px
, "ITEM %s no-expire\n", p
->tag
);
724 gettimeofday(&tv
, 0);
725 TV_SUB(&tv
, &p
->timer
.tv
, &tv
);
726 pixserv_write(px
, "ITEM %s %i\n", p
->tag
, tv
.tv_sec
);
729 pixserv_write(px
, "OK\n");
732 /* --- Request a passphrase --- */
734 else if ((mode
= PMODE_READ
, strcmp(q
, "pass") == 0) ||
735 (mode
= PMODE_VERIFY
, strcmp(q
, "verify") == 0)) {
740 if ((q
= str_getword(&s
)) == 0)
741 pixserv_write(px
, "FAIL missing tag\n");
742 else if ((t
= pixserv_timeout(s
)) == 0)
743 pixserv_write(px
, "FAIL bad timeout\n");
745 rc
= p_get(&p
, q
, mode
, t
> timeout ? timeout
: t
);
748 pixserv_write(px
, "OK %s\n", p
);
751 pixserv_write(px
, "FAIL error reading passphrase\n");
754 pixserv_write(px
, "MISSING\n");
760 /* --- Flush existing passphrases --- */
762 else if (strcmp(q
, "flush") == 0) {
765 pixserv_write(px
, "OK\n");
768 /* --- Set a passphrase --- */
770 else if (strcmp(q
, "set") == 0) {
773 if ((tag
= str_getword(&s
)) == 0)
774 pixserv_write(px
, "FAIL missing tag\n");
775 else if ((q
= str_getword(&s
)) == 0)
776 pixserv_write(px
, "FAIL no passphrase\n");
778 if (strcmp(q
, "--") != 0) {
779 t
= pixserv_timeout(q
);
782 t
= pixserv_timeout(0);
784 pixserv_write(px
, "FAIL no passphrase\n");
785 else if (strcmp(q
, "--") != 0)
786 pixserv_write(px
, "FAIL rubbish found before passphrase\n");
790 pixserv_write(px
, "OK\n");
795 /* --- Shut the server down --- */
797 else if (strcmp(q
, "quit") == 0) {
799 log("%s client requested shutdown",
800 px
->f
& px_stdin ?
"local" : "remote");
801 pixserv_write(px
, "OK\n");
805 /* --- Report an error for other commands --- */
808 pixserv_write(px
, "FAIL unknown command `%s'\n", q
);
811 /* --- @pixserv_create@ --- *
813 * Arguments: @int fd@ = file descriptor to read from
814 * @int ofd@ = file descriptor to write to
816 * Returns: Pointer to the new connection.
818 * Use: Creates a new Pixie server instance for a new connection.
821 static pixserv
*pixserv_create(int fd
, int ofd
)
823 pixserv
*px
= CREATE(pixserv
);
825 fdflags(fd
, O_NONBLOCK
, O_NONBLOCK
, FD_CLOEXEC
, FD_CLOEXEC
);
827 fdflags(ofd
, O_NONBLOCK
, O_NONBLOCK
, FD_CLOEXEC
, FD_CLOEXEC
);
829 selbuf_init(&px
->b
, &sel
, fd
, pixserv_line
, px
);
830 px
->b
.b
.a
= arena_secure
;
831 selbuf_setsize(&px
->b
, 1024);
832 gettimeofday(&tv
, 0);
833 tv
.tv_sec
+= PIXSERV_TIMEOUT
;
834 sel_addtimer(&sel
, &px
->timer
, &tv
, pixserv_expire
, px
);
839 /* --- @pixserv_accept@ --- *
841 * Arguments: @int fd@ = file descriptor
842 * @unsigned mode@ = what's happened
843 * @void *p@ = an uninteresting argument
847 * Use: Accepts a new connection.
850 static void pixserv_accept(int fd
, unsigned mode
, void *p
)
853 struct sockaddr_un sun
;
854 int sunsz
= sizeof(sun
);
856 if (mode
!= SEL_READ
)
858 if ((nfd
= accept(fd
, (struct sockaddr
*)&sun
, &sunsz
)) < 0) {
860 log("new connection failed: %s", strerror(errno
));
863 pixserv_create(nfd
, nfd
);
866 /*----- Setting up the server ---------------------------------------------*/
868 /* --- @unlinksocket@ --- *
874 * Use: Tidies up the socket when it's finished with.
877 static char *sockpath
;
879 static void unlinksocket(void)
885 /* --- @pix_sigdie@ --- *
887 * Arguments: @int sig@ = signal number
888 * @void *p@ = uninteresting argument
892 * Use: Shuts down the program after a fatal signal.
895 static void pix_sigdie(int sig
, void *p
)
902 case SIGTERM
: p
= "SIGTERM"; break;
903 case SIGINT
: p
= "SIGINT"; break;
905 sprintf(buf
, "signal %i", sig
);
909 log("shutting down on %s", p
);
914 /* --- @pix_sigflush@ --- *
916 * Arguments: @int sig@ = signal number
917 * @void *p@ = uninteresting argument
921 * Use: Flushes the passphrase cache on receipt of a signal.
924 static void pix_sigflush(int sig
, void *p
)
931 case SIGHUP
: p
= "SIGHUP"; break;
932 case SIGQUIT
: p
= "SIGQUIT"; break;
934 sprintf(buf
, "signal %i", sig
);
938 log("received %s; flushing passphrases", p
);
943 /* --- @pix_setup@ --- *
945 * Arguments: @struct sockaddr_un *sun@ = pointer to address to use
946 * @size_t sz@ = size of socket address
950 * Use: Sets up the pixie's Unix-domain socket.
953 static void pix_setup(struct sockaddr_un
*sun
, size_t sz
)
957 /* --- Set up the parent directory --- */
961 char *p
= sun
->sun_path
;
962 char *q
= strrchr(p
, '/');
971 if (stat(d
.buf
, &st
))
972 die(1, "couldn't stat `%s': %s", d
.buf
, strerror(errno
));
973 if (st
.st_mode
& 0077)
974 die(1, "parent directory `%s' has group or world access", d
.buf
);
978 /* --- Initialize the socket --- */
986 if ((fd
= socket(PF_UNIX
, SOCK_STREAM
, 0)) < 0)
987 die(1, "couldn't create socket: %s", strerror(errno
));
988 if (bind(fd
, (struct sockaddr
*)sun
, sz
) < 0) {
990 if (errno
!= EADDRINUSE
)
991 die(1, "couldn't bind to address: %s", strerror(e
));
993 die(1, "too many retries; giving up");
995 if (connect(fd
, (struct sockaddr
*)sun
, sz
)) {
996 if (errno
!= ECONNREFUSED
)
997 die(1, "couldn't bind to address: %s", strerror(e
));
999 log("stale socket found; removing it");
1000 unlink(sun
->sun_path
);
1004 log("server already running; shutting it down");
1005 write(fd
, "QUIT\n", 5);
1011 chmod(sun
->sun_path
, 0600);
1012 fdflags(fd
, O_NONBLOCK
, O_NONBLOCK
, FD_CLOEXEC
, FD_CLOEXEC
);
1014 die(1, "couldn't listen on socket: %s", strerror(errno
));
1017 /* --- Set up the rest of the server --- */
1020 static sel_file serv
;
1021 sockpath
= sun
->sun_path
;
1022 atexit(unlinksocket
);
1023 sel_initfile(&sel
, &serv
, fd
, SEL_READ
, pixserv_accept
, 0);
1028 /*----- Client support code -----------------------------------------------*/
1030 /* --- Variables --- */
1032 static selbuf c_server
, c_client
;
1034 enum { cf_uclose
= 1, cf_sclose
= 2 };
1036 /* --- Line handler functions --- */
1038 static void c_uline(char *s
, void *p
)
1042 selbuf_destroy(&c_client
);
1043 shutdown(c_server
.reader
.fd
, 1);
1044 c_flags
|= cf_uclose
;
1048 write(c_server
.reader
.fd
, s
, sz
);
1052 static void c_sline(char *s
, void *p
)
1055 selbuf_destroy(&c_server
);
1056 if (!(c_flags
& cf_uclose
)) {
1057 moan("server closed the connection");
1058 selbuf_destroy(&c_client
);
1065 /* --- @pix_client@ --- *
1067 * Arguments: @struct sockaddr_un *sun@ = pointer to socket address
1068 * @size_t sz@ = size of socket address
1069 * @char *argv[]@ = pointer to arguments to send
1073 * Use: Performs client-side actions for the passphrase pixie.
1076 static void pix_client(struct sockaddr_un
*sun
, size_t sz
, char *argv
[])
1080 /* --- Open the socket --- */
1082 if ((fd
= socket(PF_UNIX
, SOCK_STREAM
, 0)) < 0)
1083 die(1, "couldn't create socket: %s", strerror(errno
));
1084 if (connect(fd
, (struct sockaddr
*)sun
, sz
))
1085 die(1, "couldn't connect to server: %s", strerror(errno
));
1086 selbuf_init(&c_server
, &sel
, fd
, c_sline
, 0);
1088 /* --- If there are any arguments, turn them into a string --- */
1091 selbuf_init(&c_client
, &sel
, STDIN_FILENO
, c_uline
, 0);
1100 write(fd
, d
.buf
, d
.len
);
1105 /* --- And repeat --- */
1111 /*----- Main code ---------------------------------------------------------*/
1113 /* --- @help@, @version@, @usage@ --- *
1115 * Arguments: @FILE *fp@ = stream to write on
1119 * Use: Emit helpful messages.
1122 static void usage(FILE *fp
)
1126 $ [-qvidl] [-c command] [-t timeout] [-s socket]\n\
1127 $ [-s socket] -C [command args...]\n\
1131 static void version(FILE *fp
)
1133 pquis(fp
, "$, Catacomb version " VERSION
"\n");
1136 static void help(FILE *fp
)
1142 The Catacomb passphrase pixie collects and caches passphrases used to\n\
1143 protect important keys. Options provided:\n\
1145 -h, --help Show this help text.\n\
1146 -V, --version Show the program's version number.\n\
1147 -u, --usage Show a (very) terse usage summary.\n\
1149 -C, --client Connect to a running pixie as a client.\n\
1151 -q, --quiet Emit fewer log messages.\n\
1152 -v, --version Emit more log messages.\n\
1153 -s, --socket=FILE Name the pixie's socket.\n\
1154 -c, --command=COMMAND Shell command to read a passphrase.\n\
1155 -f, --fetch Fetch passphrases from the terminal.\n\
1156 -t, --timeout=TIMEOUT Length of time to retain a passphrase in memory.\n\
1157 -i, --interactive Allow commands to be typed interactively.\n\
1158 -d, --daemon Fork into the background after initialization.\n\
1159 -l, --syslog Emit log messages to the system log.\n\
1161 The COMMAND may contain `%m' and `%t' markers which are replaced by a\n\
1162 prompt message and the passphrase tag respectively. The TIMEOUT is an\n\
1163 integer, optionally followed by `d', `h', `m' or `s' to specify units of\n\
1164 days, hours, minutes or seconds respectively.\n\
1166 In client mode, if a command is specified on the command line, it is sent\n\
1167 to the running server; otherwise the program reads requests from stdin.\n\
1168 Responses from the pixie are written to stdout. Send a HELP request for\n\
1169 a quick summary of the pixie communication protocol.\n\
1175 * Arguments: @int argc@ = number of arguments
1176 * @char *argv[]@ = vector of argument values
1178 * Returns: Zero if OK.
1180 * Use: Main program. Listens on a socket and responds with a PGP
1181 * passphrase when asked.
1184 int main(int argc
, char *argv
[])
1187 struct sockaddr_un
*sun
;
1199 /* --- Initialize libraries --- */
1204 /* --- Set up the locked memory area --- */
1209 /* --- Parse command line arguments --- */
1212 static struct option opts
[] = {
1214 /* --- Standard GNUy help options --- */
1216 { "help", 0, 0, 'h' },
1217 { "version", 0, 0, 'V' },
1218 { "usage", 0, 0, 'u' },
1220 /* --- Other options --- */
1222 { "quiet", 0, 0, 'q' },
1223 { "verbose", 0, 0, 'v' },
1224 { "client", 0, 0, 'C' },
1225 { "socket", OPTF_ARGREQ
, 0, 's' },
1226 { "command", OPTF_ARGREQ
, 0, 'c' },
1227 { "fetch", 0, 0, 'f' },
1228 { "timeout", OPTF_ARGREQ
, 0, 't' },
1229 { "interactive", 0, 0, 'i' },
1230 { "stdin", 0, 0, 'i' },
1231 { "daemon", 0, 0, 'd' },
1232 { "log", 0, 0, 'l' },
1233 { "syslog", 0, 0, 'l' },
1235 /* --- Magic terminator --- */
1240 int i
= mdwopt(argc
, argv
, "hVuqvCs:c:ft:idl", opts
, 0, 0, 0);
1246 /* --- GNUy help options --- */
1258 /* --- Other interesting things --- */
1274 if ((timeout
= pixserv_timeout(optarg
)) == 0)
1275 die(1, "bad timeout `%s'", optarg
);
1294 /* --- Something else --- */
1302 if (f
& f_bogus
|| (optind
< argc
&& !(f
& f_client
))) {
1307 /* --- Set up the socket address --- */
1309 sun
= pixie_address(path
, &sz
);
1311 /* --- Initialize selectory --- */
1314 signal(SIGPIPE
, SIG_IGN
);
1316 /* --- Be a client if a client's wanted --- */
1319 pix_client(sun
, sz
, argv
+ optind
);
1321 /* --- Open the syslog if requested --- */
1325 openlog(QUIS
, 0, LOG_DAEMON
);
1328 /* --- Check on the locked memory area --- */
1332 int rc
= l_report(&lm
, &d
);
1334 die(EXIT_FAILURE
, d
.buf
);
1335 else if (rc
&& verbose
) {
1337 log("couldn't lock passphrase buffer");
1340 arena_setsecure(&lm
.a
);
1343 /* --- Set signal behaviours --- */
1346 static sig sigint
, sigterm
, sigquit
, sighup
;
1348 sig_add(&sigint
, SIGINT
, pix_sigdie
, 0);
1349 sig_add(&sigterm
, SIGTERM
, pix_sigdie
, 0);
1350 sig_add(&sigquit
, SIGQUIT
, pix_sigflush
, 0);
1351 sig_add(&sighup
, SIGHUP
, pix_sigflush
, 0);
1354 /* --- Set up the server --- */
1358 pixserv
*px
= pixserv_create(STDIN_FILENO
, STDOUT_FILENO
);
1359 sel_rmtimer(&px
->timer
);
1363 /* --- Fork into the background if requested --- */
1368 if (((f
& f_stdin
) &&
1369 (isatty(STDIN_FILENO
) || isatty(STDOUT_FILENO
))) ||
1370 (!command
&& (flags
& F_FETCH
)))
1371 die(1, "can't become a daemon if terminal required");
1373 if ((kid
= fork()) < 0)
1374 die(1, "fork failed: %s", strerror(errno
));
1380 if ((fd
= open("/dev/tty", O_RDONLY
)) >= 0) {
1381 ioctl(fd
, TIOCNOTTY
);
1393 log("initialized ok");
1399 /*----- That's all, folks -------------------------------------------------*/