Line data Source code
1 : /* dirmngr.c - Keyserver and X.509 LDAP access
2 : * Copyright (C) 2002 Klarälvdalens Datakonsult AB
3 : * Copyright (C) 2003, 2004, 2006, 2007, 2008, 2010, 2011 g10 Code GmbH
4 : * Copyright (C) 2014 Werner Koch
5 : *
6 : * This file is part of GnuPG.
7 : *
8 : * GnuPG is free software; you can redistribute it and/or modify
9 : * it under the terms of the GNU General Public License as published by
10 : * the Free Software Foundation; either version 3 of the License, or
11 : * (at your option) any later version.
12 : *
13 : * GnuPG is distributed in the hope that it will be useful,
14 : * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 : * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 : * GNU General Public License for more details.
17 : *
18 : * You should have received a copy of the GNU General Public License
19 : * along with this program; if not, see <http://www.gnu.org/licenses/>.
20 : */
21 :
22 : #include <config.h>
23 :
24 : #include <stdio.h>
25 : #include <stdlib.h>
26 : #include <stddef.h>
27 : #include <stdarg.h>
28 : #include <string.h>
29 : #include <errno.h>
30 : #include <assert.h>
31 : #include <time.h>
32 : #include <fcntl.h>
33 : #ifndef HAVE_W32_SYSTEM
34 : #include <sys/socket.h>
35 : #include <sys/un.h>
36 : #endif
37 : #include <sys/stat.h>
38 : #include <unistd.h>
39 : #ifdef HAVE_SIGNAL_H
40 : # include <signal.h>
41 : #endif
42 : #ifdef HAVE_INOTIFY_INIT
43 : # include <sys/inotify.h>
44 : #endif /*HAVE_INOTIFY_INIT*/
45 : #include <npth.h>
46 :
47 : #include "dirmngr-err.h"
48 :
49 : #if HTTP_USE_NTBTLS
50 : # include <ntbtls.h>
51 : #elif HTTP_USE_GNUTLS
52 : # include <gnutls/gnutls.h>
53 : #endif /*HTTP_USE_GNUTLS*/
54 :
55 :
56 : #define GNUPG_COMMON_NEED_AFLOCAL
57 : #include "dirmngr.h"
58 :
59 : #include <assuan.h>
60 :
61 : #include "certcache.h"
62 : #include "crlcache.h"
63 : #include "crlfetch.h"
64 : #include "misc.h"
65 : #if USE_LDAP
66 : # include "ldapserver.h"
67 : #endif
68 : #include "asshelp.h"
69 : #if USE_LDAP
70 : # include "ldap-wrapper.h"
71 : #endif
72 : #include "../common/init.h"
73 : #include "gc-opt-flags.h"
74 : #include "dns-stuff.h"
75 :
76 : #ifndef ENAMETOOLONG
77 : # define ENAMETOOLONG EINVAL
78 : #endif
79 :
80 :
81 : enum cmd_and_opt_values {
82 : aNull = 0,
83 : oCsh = 'c',
84 : oQuiet = 'q',
85 : oSh = 's',
86 : oVerbose = 'v',
87 : oNoVerbose = 500,
88 :
89 : aServer,
90 : aDaemon,
91 : aListCRLs,
92 : aLoadCRL,
93 : aFetchCRL,
94 : aShutdown,
95 : aFlush,
96 : aGPGConfList,
97 : aGPGConfTest,
98 :
99 : oOptions,
100 : oDebug,
101 : oDebugAll,
102 : oDebugWait,
103 : oDebugLevel,
104 : oGnutlsDebug,
105 : oNoGreeting,
106 : oNoOptions,
107 : oHomedir,
108 : oNoDetach,
109 : oLogFile,
110 : oBatch,
111 : oDisableHTTP,
112 : oDisableLDAP,
113 : oIgnoreLDAPDP,
114 : oIgnoreHTTPDP,
115 : oIgnoreOCSPSvcUrl,
116 : oHonorHTTPProxy,
117 : oHTTPProxy,
118 : oLDAPProxy,
119 : oOnlyLDAPProxy,
120 : oLDAPFile,
121 : oLDAPTimeout,
122 : oLDAPAddServers,
123 : oOCSPResponder,
124 : oOCSPSigner,
125 : oOCSPMaxClockSkew,
126 : oOCSPMaxPeriod,
127 : oOCSPCurrentPeriod,
128 : oMaxReplies,
129 : oHkpCaCert,
130 : oFakedSystemTime,
131 : oForce,
132 : oAllowOCSP,
133 : oSocketName,
134 : oLDAPWrapperProgram,
135 : oHTTPWrapperProgram,
136 : oIgnoreCertExtension,
137 : oUseTor,
138 : oKeyServer,
139 : oNameServer,
140 : oDisableCheckOwnSocket,
141 : aTest
142 : };
143 :
144 :
145 :
146 : static ARGPARSE_OPTS opts[] = {
147 :
148 : ARGPARSE_group (300, N_("@Commands:\n ")),
149 :
150 : ARGPARSE_c (aServer, "server", N_("run in server mode (foreground)") ),
151 : ARGPARSE_c (aDaemon, "daemon", N_("run in daemon mode (background)") ),
152 : ARGPARSE_c (aListCRLs, "list-crls", N_("list the contents of the CRL cache")),
153 : ARGPARSE_c (aLoadCRL, "load-crl", N_("|FILE|load CRL from FILE into cache")),
154 : ARGPARSE_c (aFetchCRL, "fetch-crl", N_("|URL|fetch a CRL from URL")),
155 : ARGPARSE_c (aShutdown, "shutdown", N_("shutdown the dirmngr")),
156 : ARGPARSE_c (aFlush, "flush", N_("flush the cache")),
157 : ARGPARSE_c (aGPGConfList, "gpgconf-list", "@"),
158 : ARGPARSE_c (aGPGConfTest, "gpgconf-test", "@"),
159 :
160 : ARGPARSE_group (301, N_("@\nOptions:\n ")),
161 :
162 : ARGPARSE_s_n (oVerbose, "verbose", N_("verbose")),
163 : ARGPARSE_s_n (oQuiet, "quiet", N_("be somewhat more quiet")),
164 : ARGPARSE_s_n (oSh, "sh", N_("sh-style command output")),
165 : ARGPARSE_s_n (oCsh, "csh", N_("csh-style command output")),
166 : ARGPARSE_s_s (oOptions, "options", N_("|FILE|read options from FILE")),
167 : ARGPARSE_s_s (oDebugLevel, "debug-level",
168 : N_("|LEVEL|set the debugging level to LEVEL")),
169 : ARGPARSE_s_n (oNoDetach, "no-detach", N_("do not detach from the console")),
170 : ARGPARSE_s_s (oLogFile, "log-file",
171 : N_("|FILE|write server mode logs to FILE")),
172 : ARGPARSE_s_n (oBatch, "batch", N_("run without asking a user")),
173 : ARGPARSE_s_n (oForce, "force", N_("force loading of outdated CRLs")),
174 : ARGPARSE_s_n (oAllowOCSP, "allow-ocsp", N_("allow sending OCSP requests")),
175 : ARGPARSE_s_n (oDisableHTTP, "disable-http", N_("inhibit the use of HTTP")),
176 : ARGPARSE_s_n (oDisableLDAP, "disable-ldap", N_("inhibit the use of LDAP")),
177 : ARGPARSE_s_n (oIgnoreHTTPDP,"ignore-http-dp",
178 : N_("ignore HTTP CRL distribution points")),
179 : ARGPARSE_s_n (oIgnoreLDAPDP,"ignore-ldap-dp",
180 : N_("ignore LDAP CRL distribution points")),
181 : ARGPARSE_s_n (oIgnoreOCSPSvcUrl, "ignore-ocsp-service-url",
182 : N_("ignore certificate contained OCSP service URLs")),
183 :
184 : ARGPARSE_s_s (oHTTPProxy, "http-proxy",
185 : N_("|URL|redirect all HTTP requests to URL")),
186 : ARGPARSE_s_s (oLDAPProxy, "ldap-proxy",
187 : N_("|HOST|use HOST for LDAP queries")),
188 : ARGPARSE_s_n (oOnlyLDAPProxy, "only-ldap-proxy",
189 : N_("do not use fallback hosts with --ldap-proxy")),
190 :
191 : ARGPARSE_s_s (oLDAPFile, "ldapserverlist-file",
192 : N_("|FILE|read LDAP server list from FILE")),
193 : ARGPARSE_s_n (oLDAPAddServers, "add-servers",
194 : N_("add new servers discovered in CRL distribution"
195 : " points to serverlist")),
196 : ARGPARSE_s_i (oLDAPTimeout, "ldaptimeout",
197 : N_("|N|set LDAP timeout to N seconds")),
198 :
199 : ARGPARSE_s_s (oOCSPResponder, "ocsp-responder",
200 : N_("|URL|use OCSP responder at URL")),
201 : ARGPARSE_s_s (oOCSPSigner, "ocsp-signer",
202 : N_("|FPR|OCSP response signed by FPR")),
203 : ARGPARSE_s_i (oOCSPMaxClockSkew, "ocsp-max-clock-skew", "@"),
204 : ARGPARSE_s_i (oOCSPMaxPeriod, "ocsp-max-period", "@"),
205 : ARGPARSE_s_i (oOCSPCurrentPeriod, "ocsp-current-period", "@"),
206 :
207 : ARGPARSE_s_i (oMaxReplies, "max-replies",
208 : N_("|N|do not return more than N items in one query")),
209 :
210 : ARGPARSE_s_s (oNameServer, "nameserver", "@"),
211 : ARGPARSE_s_s (oKeyServer, "keyserver", "@"),
212 : ARGPARSE_s_s (oHkpCaCert, "hkp-cacert",
213 : N_("|FILE|use the CA certificates in FILE for HKP over TLS")),
214 :
215 : ARGPARSE_s_n (oUseTor, "use-tor", N_("route all network traffic via Tor")),
216 :
217 : ARGPARSE_s_s (oSocketName, "socket-name", "@"), /* Only for debugging. */
218 :
219 : ARGPARSE_s_u (oFakedSystemTime, "faked-system-time", "@"), /*(epoch time)*/
220 : ARGPARSE_s_s (oDebug, "debug", "@"),
221 : ARGPARSE_s_n (oDebugAll, "debug-all", "@"),
222 : ARGPARSE_s_i (oGnutlsDebug, "gnutls-debug", "@"),
223 : ARGPARSE_s_i (oGnutlsDebug, "tls-debug", "@"),
224 : ARGPARSE_s_i (oDebugWait, "debug-wait", "@"),
225 : ARGPARSE_s_n (oDisableCheckOwnSocket, "disable-check-own-socket", "@"),
226 : ARGPARSE_s_n (oNoGreeting, "no-greeting", "@"),
227 : ARGPARSE_s_s (oHomedir, "homedir", "@"),
228 : ARGPARSE_s_s (oLDAPWrapperProgram, "ldap-wrapper-program", "@"),
229 : ARGPARSE_s_s (oHTTPWrapperProgram, "http-wrapper-program", "@"),
230 : ARGPARSE_s_n (oHonorHTTPProxy, "honor-http-proxy", "@"),
231 : ARGPARSE_s_s (oIgnoreCertExtension,"ignore-cert-extension", "@"),
232 :
233 : ARGPARSE_group (302,N_("@\n(See the \"info\" manual for a complete listing "
234 : "of all commands and options)\n")),
235 :
236 : ARGPARSE_end ()
237 : };
238 :
239 : /* The list of supported debug flags. */
240 : static struct debug_flags_s debug_flags [] =
241 : {
242 : { DBG_X509_VALUE , "x509" },
243 : { DBG_CRYPTO_VALUE , "crypto" },
244 : { DBG_MEMORY_VALUE , "memory" },
245 : { DBG_CACHE_VALUE , "cache" },
246 : { DBG_MEMSTAT_VALUE, "memstat" },
247 : { DBG_HASHING_VALUE, "hashing" },
248 : { DBG_IPC_VALUE , "ipc" },
249 : { DBG_LOOKUP_VALUE , "lookup" },
250 : { 77, NULL } /* 77 := Do not exit on "help" or "?". */
251 : };
252 :
253 : #define DEFAULT_MAX_REPLIES 10
254 : #define DEFAULT_LDAP_TIMEOUT 100 /* arbitrary large timeout */
255 :
256 : /* For the cleanup handler we need to keep track of the socket's name. */
257 : static const char *socket_name;
258 : /* If the socket has been redirected, this is the name of the
259 : redirected socket.. */
260 : static const char *redir_socket_name;
261 :
262 : /* We need to keep track of the server's nonces (these are dummies for
263 : POSIX systems). */
264 : static assuan_sock_nonce_t socket_nonce;
265 :
266 : /* Only if this flag has been set will we remove the socket file. */
267 : static int cleanup_socket;
268 :
269 : /* Keep track of the current log file so that we can avoid updating
270 : the log file after a SIGHUP if it didn't changed. Malloced. */
271 : static char *current_logfile;
272 :
273 : /* Helper to implement --debug-level. */
274 : static const char *debug_level;
275 :
276 : /* Helper to set the NTBTLS or GNUTLS log level. */
277 : static int opt_gnutls_debug = -1;
278 :
279 : /* Flag indicating that a shutdown has been requested. */
280 : static volatile int shutdown_pending;
281 :
282 : /* Flags to indicate that we shall not watch our own socket. */
283 : static int disable_check_own_socket;
284 :
285 : /* Counter for the active connections. */
286 : static int active_connections;
287 :
288 : /* The timer tick used for housekeeping stuff. For Windows we use a
289 : longer period as the SetWaitableTimer seems to signal earlier than
290 : the 2 seconds. All values are in seconds. */
291 : #if defined(HAVE_W32CE_SYSTEM)
292 : # define TIMERTICK_INTERVAL (60)
293 : #elif defined(HAVE_W32_SYSTEM)
294 : # define TIMERTICK_INTERVAL (4)
295 : #else
296 : # define TIMERTICK_INTERVAL (2)
297 : #endif
298 :
299 : #define HOUSEKEEPING_INTERVAL (600)
300 :
301 :
302 : /* This union is used to avoid compiler warnings in case a pointer is
303 : 64 bit and an int 32 bit. We store an integer in a pointer and get
304 : it back later (npth_getspecific et al.). */
305 : union int_and_ptr_u
306 : {
307 : int aint;
308 : assuan_fd_t afd;
309 : void *aptr;
310 : };
311 :
312 :
313 :
314 : /* The key used to store the current file descriptor in the thread
315 : local storage. We use this in conjunction with the
316 : log_set_pid_suffix_cb feature. */
317 : #ifndef HAVE_W32_SYSTEM
318 : static int my_tlskey_current_fd;
319 : #endif
320 :
321 : /* Prototypes. */
322 : static void cleanup (void);
323 : #if USE_LDAP
324 : static ldap_server_t parse_ldapserver_file (const char* filename);
325 : #endif /*USE_LDAP*/
326 : static fingerprint_list_t parse_ocsp_signer (const char *string);
327 : static void handle_connections (assuan_fd_t listen_fd);
328 :
329 : /* NPth wrapper function definitions. */
330 0 : ASSUAN_SYSTEM_NPTH_IMPL;
331 :
332 : static const char *
333 0 : my_strusage( int level )
334 : {
335 : const char *p;
336 0 : switch ( level )
337 : {
338 0 : case 11: p = "@DIRMNGR@ (@GNUPG@)";
339 0 : break;
340 0 : case 13: p = VERSION; break;
341 0 : case 17: p = PRINTABLE_OS_NAME; break;
342 : /* TRANSLATORS: @EMAIL@ will get replaced by the actual bug
343 : reporting address. This is so that we can change the
344 : reporting address without breaking the translations. */
345 0 : case 19: p = _("Please report bugs to <@EMAIL@>.\n"); break;
346 0 : case 49: p = PACKAGE_BUGREPORT; break;
347 : case 1:
348 0 : case 40: p = _("Usage: @DIRMNGR@ [options] (-h for help)");
349 0 : break;
350 0 : case 41: p = _("Syntax: @DIRMNGR@ [options] [command [args]]\n"
351 : "Keyserver, CRL, and OCSP access for @GNUPG@\n");
352 0 : break;
353 :
354 0 : default: p = NULL;
355 : }
356 0 : return p;
357 : }
358 :
359 :
360 : /* Callback from libksba to hash a provided buffer. Our current
361 : implementation does only allow SHA-1 for hashing. This may be
362 : extended by mapping the name, testing for algorithm availibility
363 : and adjust the length checks accordingly. */
364 : static gpg_error_t
365 0 : my_ksba_hash_buffer (void *arg, const char *oid,
366 : const void *buffer, size_t length, size_t resultsize,
367 : unsigned char *result, size_t *resultlen)
368 : {
369 : (void)arg;
370 :
371 0 : if (oid && strcmp (oid, "1.3.14.3.2.26"))
372 0 : return gpg_error (GPG_ERR_NOT_SUPPORTED);
373 0 : if (resultsize < 20)
374 0 : return gpg_error (GPG_ERR_BUFFER_TOO_SHORT);
375 0 : gcry_md_hash_buffer (2, result, buffer, length);
376 0 : *resultlen = 20;
377 0 : return 0;
378 : }
379 :
380 :
381 : /* GNUTLS log function callback. */
382 : #ifdef HTTP_USE_GNUTLS
383 : static void
384 0 : my_gnutls_log (int level, const char *text)
385 : {
386 : int n;
387 :
388 0 : n = strlen (text);
389 0 : while (n && text[n-1] == '\n')
390 0 : n--;
391 :
392 0 : log_debug ("gnutls:L%d: %.*s\n", level, n, text);
393 0 : }
394 : #endif /*HTTP_USE_GNUTLS*/
395 :
396 : /* Setup the debugging. With a LEVEL of NULL only the active debug
397 : flags are propagated to the subsystems. With LEVEL set, a specific
398 : set of debug flags is set; thus overriding all flags already
399 : set. */
400 : static void
401 0 : set_debug (void)
402 : {
403 0 : int numok = (debug_level && digitp (debug_level));
404 0 : int numlvl = numok? atoi (debug_level) : 0;
405 :
406 0 : if (!debug_level)
407 : ;
408 0 : else if (!strcmp (debug_level, "none") || (numok && numlvl < 1))
409 0 : opt.debug = 0;
410 0 : else if (!strcmp (debug_level, "basic") || (numok && numlvl <= 2))
411 0 : opt.debug = DBG_IPC_VALUE;
412 0 : else if (!strcmp (debug_level, "advanced") || (numok && numlvl <= 5))
413 0 : opt.debug = (DBG_IPC_VALUE|DBG_X509_VALUE|DBG_LOOKUP_VALUE);
414 0 : else if (!strcmp (debug_level, "expert") || (numok && numlvl <= 8))
415 0 : opt.debug = (DBG_IPC_VALUE|DBG_X509_VALUE|DBG_LOOKUP_VALUE
416 : |DBG_CACHE_VALUE|DBG_CRYPTO_VALUE);
417 0 : else if (!strcmp (debug_level, "guru") || numok)
418 : {
419 0 : opt.debug = ~0;
420 : /* Unless the "guru" string has been used we don't want to allow
421 : hashing debugging. The rationale is that people tend to
422 : select the highest debug value and would then clutter their
423 : disk with debug files which may reveal confidential data. */
424 0 : if (numok)
425 0 : opt.debug &= ~(DBG_HASHING_VALUE);
426 : }
427 : else
428 : {
429 0 : log_error (_("invalid debug-level '%s' given\n"), debug_level);
430 0 : log_info (_("valid debug levels are: %s\n"),
431 : "none, basic, advanced, expert, guru");
432 0 : opt.debug = 0; /* Reset debugging, so that prior debug
433 : statements won't have an undesired effect. */
434 : }
435 :
436 :
437 0 : if (opt.debug && !opt.verbose)
438 : {
439 0 : opt.verbose = 1;
440 0 : gcry_control (GCRYCTL_SET_VERBOSITY, (int)opt.verbose);
441 : }
442 0 : if (opt.debug && opt.quiet)
443 0 : opt.quiet = 0;
444 :
445 0 : if (opt.debug & DBG_CRYPTO_VALUE )
446 0 : gcry_control (GCRYCTL_SET_DEBUG_FLAGS, 1);
447 :
448 : #if HTTP_USE_NTBTLS
449 : if (opt_gnutls_debug >= 0)
450 : {
451 : ntbtls_set_debug (opt_gnutls_debug, NULL, NULL);
452 : }
453 : #elif HTTP_USE_GNUTLS
454 0 : if (opt_gnutls_debug >= 0)
455 : {
456 0 : gnutls_global_set_log_function (my_gnutls_log);
457 0 : gnutls_global_set_log_level (opt_gnutls_debug);
458 : }
459 : #endif /*HTTP_USE_GNUTLS*/
460 :
461 0 : if (opt.debug)
462 0 : parse_debug_flag (NULL, &opt.debug, debug_flags);
463 0 : }
464 :
465 :
466 : static void
467 0 : set_tor_mode (void)
468 : {
469 0 : if (opt.use_tor)
470 : {
471 0 : if (assuan_sock_set_flag (ASSUAN_INVALID_FD, "tor-mode", 1))
472 : {
473 0 : log_error ("error enabling Tor mode: %s\n", strerror (errno));
474 0 : log_info ("(is your Libassuan recent enough?)\n");
475 : }
476 : }
477 0 : }
478 :
479 :
480 : static void
481 0 : wrong_args (const char *text)
482 : {
483 0 : es_fprintf (es_stderr, _("usage: %s [options] "), DIRMNGR_NAME);
484 0 : es_fputs (text, es_stderr);
485 0 : es_putc ('\n', es_stderr);
486 0 : dirmngr_exit (2);
487 0 : }
488 :
489 :
490 : /* Helper to stop the reaper thread for the ldap wrapper. */
491 : static void
492 0 : shutdown_reaper (void)
493 : {
494 : #if USE_LDAP
495 0 : ldap_wrapper_wait_connections ();
496 : #endif
497 0 : }
498 :
499 :
500 : /* Handle options which are allowed to be reset after program start.
501 : Return true if the current option in PARGS could be handled and
502 : false if not. As a special feature, passing a value of NULL for
503 : PARGS, resets the options to the default. REREAD should be set
504 : true if it is not the initial option parsing. */
505 : static int
506 0 : parse_rereadable_options (ARGPARSE_ARGS *pargs, int reread)
507 : {
508 0 : if (!pargs)
509 : { /* Reset mode. */
510 0 : opt.quiet = 0;
511 0 : opt.verbose = 0;
512 0 : opt.debug = 0;
513 0 : opt.ldap_wrapper_program = NULL;
514 0 : opt.disable_http = 0;
515 0 : opt.disable_ldap = 0;
516 0 : opt.honor_http_proxy = 0;
517 0 : opt.http_proxy = NULL;
518 0 : opt.ldap_proxy = NULL;
519 0 : opt.only_ldap_proxy = 0;
520 0 : opt.ignore_http_dp = 0;
521 0 : opt.ignore_ldap_dp = 0;
522 0 : opt.ignore_ocsp_service_url = 0;
523 0 : opt.allow_ocsp = 0;
524 0 : opt.ocsp_responder = NULL;
525 0 : opt.ocsp_max_clock_skew = 10 * 60; /* 10 minutes. */
526 0 : opt.ocsp_max_period = 90 * 86400; /* 90 days. */
527 0 : opt.ocsp_current_period = 3 * 60 * 60; /* 3 hours. */
528 0 : opt.max_replies = DEFAULT_MAX_REPLIES;
529 0 : while (opt.ocsp_signer)
530 : {
531 0 : fingerprint_list_t tmp = opt.ocsp_signer->next;
532 0 : xfree (opt.ocsp_signer);
533 0 : opt.ocsp_signer = tmp;
534 : }
535 0 : FREE_STRLIST (opt.ignored_cert_extensions);
536 0 : http_register_tls_ca (NULL);
537 0 : FREE_STRLIST (opt.keyserver);
538 : /* Note: We do not allow resetting of opt.use_tor at runtime. */
539 0 : disable_check_own_socket = 0;
540 0 : return 1;
541 : }
542 :
543 0 : switch (pargs->r_opt)
544 : {
545 0 : case oQuiet: opt.quiet = 1; break;
546 0 : case oVerbose: opt.verbose++; break;
547 : case oDebug:
548 0 : parse_debug_flag (pargs->r.ret_str, &opt.debug, debug_flags);
549 0 : break;
550 0 : case oDebugAll: opt.debug = ~0; break;
551 0 : case oDebugLevel: debug_level = pargs->r.ret_str; break;
552 0 : case oGnutlsDebug: opt_gnutls_debug = pargs->r.ret_int; break;
553 :
554 : case oLogFile:
555 0 : if (!reread)
556 0 : return 0; /* Not handled. */
557 0 : if (!current_logfile || !pargs->r.ret_str
558 0 : || strcmp (current_logfile, pargs->r.ret_str))
559 : {
560 0 : log_set_file (pargs->r.ret_str);
561 0 : xfree (current_logfile);
562 0 : current_logfile = xtrystrdup (pargs->r.ret_str);
563 : }
564 0 : break;
565 :
566 0 : case oDisableCheckOwnSocket: disable_check_own_socket = 1; break;
567 :
568 : case oLDAPWrapperProgram:
569 0 : opt.ldap_wrapper_program = pargs->r.ret_str;
570 0 : break;
571 : case oHTTPWrapperProgram:
572 0 : opt.http_wrapper_program = pargs->r.ret_str;
573 0 : break;
574 :
575 0 : case oDisableHTTP: opt.disable_http = 1; break;
576 0 : case oDisableLDAP: opt.disable_ldap = 1; break;
577 0 : case oHonorHTTPProxy: opt.honor_http_proxy = 1; break;
578 0 : case oHTTPProxy: opt.http_proxy = pargs->r.ret_str; break;
579 0 : case oLDAPProxy: opt.ldap_proxy = pargs->r.ret_str; break;
580 0 : case oOnlyLDAPProxy: opt.only_ldap_proxy = 1; break;
581 0 : case oIgnoreHTTPDP: opt.ignore_http_dp = 1; break;
582 0 : case oIgnoreLDAPDP: opt.ignore_ldap_dp = 1; break;
583 0 : case oIgnoreOCSPSvcUrl: opt.ignore_ocsp_service_url = 1; break;
584 :
585 0 : case oAllowOCSP: opt.allow_ocsp = 1; break;
586 0 : case oOCSPResponder: opt.ocsp_responder = pargs->r.ret_str; break;
587 : case oOCSPSigner:
588 0 : opt.ocsp_signer = parse_ocsp_signer (pargs->r.ret_str);
589 0 : break;
590 0 : case oOCSPMaxClockSkew: opt.ocsp_max_clock_skew = pargs->r.ret_int; break;
591 0 : case oOCSPMaxPeriod: opt.ocsp_max_period = pargs->r.ret_int; break;
592 0 : case oOCSPCurrentPeriod: opt.ocsp_current_period = pargs->r.ret_int; break;
593 :
594 0 : case oMaxReplies: opt.max_replies = pargs->r.ret_int; break;
595 :
596 : case oHkpCaCert:
597 : {
598 : char *tmpname;
599 :
600 : /* Do tilde expansion and print a warning if the file can't be
601 : accessed. */
602 0 : tmpname = make_absfilename_try (pargs->r.ret_str, NULL);
603 0 : if (!tmpname || access (tmpname, F_OK))
604 0 : log_info (_("can't access '%s': %s\n"),
605 : tmpname? tmpname : pargs->r.ret_str,
606 : gpg_strerror (gpg_error_from_syserror()));
607 : else
608 0 : http_register_tls_ca (tmpname);
609 0 : xfree (tmpname);
610 : }
611 0 : break;
612 :
613 : case oIgnoreCertExtension:
614 0 : add_to_strlist (&opt.ignored_cert_extensions, pargs->r.ret_str);
615 0 : break;
616 :
617 0 : case oUseTor: opt.use_tor = 1; break;
618 :
619 : case oKeyServer:
620 0 : if (*pargs->r.ret_str)
621 0 : add_to_strlist (&opt.keyserver, pargs->r.ret_str);
622 0 : break;
623 :
624 : case oNameServer:
625 0 : set_dns_nameserver (pargs->r.ret_str);
626 0 : break;
627 :
628 : default:
629 0 : return 0; /* Not handled. */
630 : }
631 :
632 0 : return 1; /* Handled. */
633 : }
634 :
635 :
636 : #ifndef HAVE_W32_SYSTEM
637 : static int
638 0 : pid_suffix_callback (unsigned long *r_suffix)
639 : {
640 : union int_and_ptr_u value;
641 :
642 0 : memset (&value, 0, sizeof value);
643 0 : value.aptr = npth_getspecific (my_tlskey_current_fd);
644 0 : *r_suffix = value.aint;
645 0 : return (*r_suffix != -1); /* Use decimal representation. */
646 : }
647 : #endif /*!HAVE_W32_SYSTEM*/
648 :
649 :
650 : int
651 0 : main (int argc, char **argv)
652 : {
653 0 : enum cmd_and_opt_values cmd = 0;
654 : ARGPARSE_ARGS pargs;
655 : int orig_argc;
656 : char **orig_argv;
657 0 : FILE *configfp = NULL;
658 0 : char *configname = NULL;
659 : const char *shell;
660 : unsigned configlineno;
661 0 : int parse_debug = 0;
662 0 : int default_config =1;
663 0 : int greeting = 0;
664 0 : int nogreeting = 0;
665 0 : int nodetach = 0;
666 0 : int csh_style = 0;
667 0 : char *logfile = NULL;
668 : #if USE_LDAP
669 0 : char *ldapfile = NULL;
670 : #endif /*USE_LDAP*/
671 0 : int debug_wait = 0;
672 : int rc;
673 : struct assuan_malloc_hooks malloc_hooks;
674 :
675 0 : early_system_init ();
676 0 : set_strusage (my_strusage);
677 0 : log_set_prefix (DIRMNGR_NAME, GPGRT_LOG_WITH_PREFIX | GPGRT_LOG_WITH_PID);
678 :
679 : /* Make sure that our subsystems are ready. */
680 0 : i18n_init ();
681 0 : init_common_subsystems (&argc, &argv);
682 :
683 0 : npth_init ();
684 :
685 0 : gcry_control (GCRYCTL_DISABLE_SECMEM, 0);
686 :
687 : /* Check that the libraries are suitable. Do it here because
688 : the option parsing may need services of the libraries. */
689 0 : if (!ksba_check_version (NEED_KSBA_VERSION) )
690 0 : log_fatal( _("%s is too old (need %s, have %s)\n"), "libksba",
691 : NEED_KSBA_VERSION, ksba_check_version (NULL) );
692 :
693 0 : ksba_set_malloc_hooks (gcry_malloc, gcry_realloc, gcry_free );
694 0 : ksba_set_hash_buffer_function (my_ksba_hash_buffer, NULL);
695 :
696 : /* Init TLS library. */
697 : #if HTTP_USE_NTBTLS
698 : if (!ntbtls_check_version (NEED_NTBTLS_VERSION) )
699 : log_fatal( _("%s is too old (need %s, have %s)\n"), "ntbtls",
700 : NEED_NTBTLS_VERSION, ntbtls_check_version (NULL) );
701 : #elif HTTP_USE_GNUTLS
702 0 : rc = gnutls_global_init ();
703 0 : if (rc)
704 0 : log_fatal ("gnutls_global_init failed: %s\n", gnutls_strerror (rc));
705 : #endif /*HTTP_USE_GNUTLS*/
706 :
707 : /* Init Assuan. */
708 0 : malloc_hooks.malloc = gcry_malloc;
709 0 : malloc_hooks.realloc = gcry_realloc;
710 0 : malloc_hooks.free = gcry_free;
711 0 : assuan_set_malloc_hooks (&malloc_hooks);
712 0 : assuan_set_assuan_log_prefix (log_get_prefix (NULL));
713 0 : assuan_set_gpg_err_source (GPG_ERR_SOURCE_DEFAULT);
714 0 : assuan_set_system_hooks (ASSUAN_SYSTEM_NPTH);
715 0 : assuan_sock_init ();
716 0 : setup_libassuan_logging (&opt.debug, dirmngr_assuan_log_monitor);
717 :
718 0 : setup_libgcrypt_logging ();
719 :
720 : /* Setup defaults. */
721 0 : shell = getenv ("SHELL");
722 0 : if (shell && strlen (shell) >= 3 && !strcmp (shell+strlen (shell)-3, "csh") )
723 0 : csh_style = 1;
724 :
725 : /* Now with NPth running we can set the logging callback. Our
726 : windows implementation does not yet feature the NPth TLS
727 : functions. */
728 : #ifndef HAVE_W32_SYSTEM
729 0 : if (npth_key_create (&my_tlskey_current_fd, NULL) == 0)
730 0 : if (npth_setspecific (my_tlskey_current_fd, NULL) == 0)
731 0 : log_set_pid_suffix_cb (pid_suffix_callback);
732 : #endif /*!HAVE_W32_SYSTEM*/
733 :
734 : /* Reset rereadable options to default values. */
735 0 : parse_rereadable_options (NULL, 0);
736 :
737 : /* LDAP defaults. */
738 0 : opt.add_new_ldapservers = 0;
739 0 : opt.ldaptimeout = DEFAULT_LDAP_TIMEOUT;
740 :
741 : /* Other defaults. */
742 :
743 : /* Check whether we have a config file given on the commandline */
744 0 : orig_argc = argc;
745 0 : orig_argv = argv;
746 0 : pargs.argc = &argc;
747 0 : pargs.argv = &argv;
748 0 : pargs.flags= 1|(1<<6); /* do not remove the args, ignore version */
749 0 : while (arg_parse( &pargs, opts))
750 : {
751 0 : if (pargs.r_opt == oDebug || pargs.r_opt == oDebugAll)
752 0 : parse_debug++;
753 0 : else if (pargs.r_opt == oOptions)
754 : { /* Yes there is one, so we do not try the default one, but
755 : read the option file when it is encountered at the
756 : commandline */
757 0 : default_config = 0;
758 : }
759 0 : else if (pargs.r_opt == oNoOptions)
760 0 : default_config = 0; /* --no-options */
761 0 : else if (pargs.r_opt == oHomedir)
762 : {
763 0 : gnupg_set_homedir (pargs.r.ret_str);
764 : }
765 : }
766 :
767 0 : socket_name = dirmngr_socket_name ();
768 0 : if (default_config)
769 0 : configname = make_filename (gnupg_homedir (), DIRMNGR_NAME".conf", NULL );
770 :
771 0 : argc = orig_argc;
772 0 : argv = orig_argv;
773 0 : pargs.argc = &argc;
774 0 : pargs.argv = &argv;
775 0 : pargs.flags= 1; /* do not remove the args */
776 : next_pass:
777 0 : if (configname)
778 : {
779 0 : configlineno = 0;
780 0 : configfp = fopen (configname, "r");
781 0 : if (!configfp)
782 : {
783 0 : if (default_config)
784 : {
785 0 : if( parse_debug )
786 0 : log_info (_("Note: no default option file '%s'\n"),
787 : configname );
788 : }
789 : else
790 : {
791 0 : log_error (_("option file '%s': %s\n"),
792 0 : configname, strerror(errno) );
793 0 : exit(2);
794 : }
795 0 : xfree (configname);
796 0 : configname = NULL;
797 : }
798 0 : if (parse_debug && configname )
799 0 : log_info (_("reading options from '%s'\n"), configname );
800 0 : default_config = 0;
801 : }
802 :
803 0 : while (optfile_parse( configfp, configname, &configlineno, &pargs, opts) )
804 : {
805 0 : if (parse_rereadable_options (&pargs, 0))
806 0 : continue; /* Already handled */
807 0 : switch (pargs.r_opt)
808 : {
809 : case aServer:
810 : case aDaemon:
811 : case aShutdown:
812 : case aFlush:
813 : case aListCRLs:
814 : case aLoadCRL:
815 : case aFetchCRL:
816 : case aGPGConfList:
817 : case aGPGConfTest:
818 0 : cmd = pargs.r_opt;
819 0 : break;
820 :
821 0 : case oQuiet: opt.quiet = 1; break;
822 0 : case oVerbose: opt.verbose++; break;
823 0 : case oBatch: opt.batch=1; break;
824 :
825 0 : case oDebugWait: debug_wait = pargs.r.ret_int; break;
826 :
827 : case oOptions:
828 : /* Config files may not be nested (silently ignore them) */
829 0 : if (!configfp)
830 : {
831 0 : xfree(configname);
832 0 : configname = xstrdup(pargs.r.ret_str);
833 0 : goto next_pass;
834 : }
835 0 : break;
836 0 : case oNoGreeting: nogreeting = 1; break;
837 0 : case oNoVerbose: opt.verbose = 0; break;
838 0 : case oNoOptions: break; /* no-options */
839 0 : case oHomedir: /* Ignore this option here. */; break;
840 0 : case oNoDetach: nodetach = 1; break;
841 0 : case oLogFile: logfile = pargs.r.ret_str; break;
842 0 : case oCsh: csh_style = 1; break;
843 0 : case oSh: csh_style = 0; break;
844 : case oLDAPFile:
845 : # if USE_LDAP
846 0 : ldapfile = pargs.r.ret_str;
847 : # endif /*USE_LDAP*/
848 0 : break;
849 0 : case oLDAPAddServers: opt.add_new_ldapservers = 1; break;
850 : case oLDAPTimeout:
851 0 : opt.ldaptimeout = pargs.r.ret_int;
852 0 : break;
853 :
854 : case oFakedSystemTime:
855 0 : gnupg_set_time ((time_t)pargs.r.ret_ulong, 0);
856 0 : break;
857 :
858 0 : case oForce: opt.force = 1; break;
859 :
860 0 : case oSocketName: socket_name = pargs.r.ret_str; break;
861 :
862 0 : default : pargs.err = configfp? 1:2; break;
863 : }
864 : }
865 0 : if (configfp)
866 : {
867 0 : fclose (configfp);
868 0 : configfp = NULL;
869 : /* Keep a copy of the name so that it can be read on SIGHUP. */
870 0 : opt.config_filename = configname;
871 0 : configname = NULL;
872 0 : goto next_pass;
873 : }
874 0 : xfree (configname);
875 0 : configname = NULL;
876 0 : if (log_get_errorcount(0))
877 0 : exit(2);
878 0 : if (nogreeting )
879 0 : greeting = 0;
880 :
881 0 : if (!opt.homedir_cache)
882 0 : opt.homedir_cache = xstrdup (gnupg_homedir ());
883 :
884 0 : if (greeting)
885 : {
886 0 : es_fprintf (es_stderr, "%s %s; %s\n",
887 : strusage(11), strusage(13), strusage(14) );
888 0 : es_fprintf (es_stderr, "%s\n", strusage(15) );
889 : }
890 :
891 : #ifdef IS_DEVELOPMENT_VERSION
892 : log_info ("NOTE: this is a development version!\n");
893 : #endif
894 :
895 0 : if (opt.use_tor)
896 : {
897 0 : log_info ("WARNING: ***************************************\n");
898 0 : log_info ("WARNING: Tor mode (--use-tor) MAY NOT FULLY WORK!\n");
899 0 : log_info ("WARNING: ***************************************\n");
900 : }
901 :
902 : /* Print a warning if an argument looks like an option. */
903 0 : if (!opt.quiet && !(pargs.flags & ARGPARSE_FLAG_STOP_SEEN))
904 : {
905 : int i;
906 :
907 0 : for (i=0; i < argc; i++)
908 0 : if (argv[i][0] == '-' && argv[i][1] == '-')
909 0 : log_info (_("Note: '%s' is not considered an option\n"), argv[i]);
910 : }
911 :
912 0 : if (!access ("/etc/"DIRMNGR_NAME, F_OK)
913 0 : && !strncmp (gnupg_homedir (), "/etc/", 5))
914 0 : log_info
915 : ("NOTE: DirMngr is now a proper part of %s. The configuration and"
916 : " other directory names changed. Please check that no other version"
917 : " of dirmngr is still installed. To disable this warning, remove the"
918 : " directory '/etc/dirmngr'.\n", GNUPG_NAME);
919 :
920 0 : if (gnupg_faked_time_p ())
921 : {
922 : gnupg_isotime_t tbuf;
923 :
924 0 : log_info (_("WARNING: running with faked system time: "));
925 0 : gnupg_get_isotime (tbuf);
926 0 : dump_isotime (tbuf);
927 0 : log_printf ("\n");
928 : }
929 :
930 0 : set_debug ();
931 0 : set_tor_mode ();
932 :
933 : /* Get LDAP server list from file. */
934 : #if USE_LDAP
935 0 : if (!ldapfile)
936 : {
937 0 : ldapfile = make_filename (gnupg_homedir (),
938 : "dirmngr_ldapservers.conf",
939 : NULL);
940 0 : opt.ldapservers = parse_ldapserver_file (ldapfile);
941 0 : xfree (ldapfile);
942 : }
943 : else
944 0 : opt.ldapservers = parse_ldapserver_file (ldapfile);
945 : #endif /*USE_LDAP*/
946 :
947 : #ifndef HAVE_W32_SYSTEM
948 : /* We need to ignore the PIPE signal because the we might log to a
949 : socket and that code handles EPIPE properly. The ldap wrapper
950 : also requires us to ignore this silly signal. Assuan would set
951 : this signal to ignore anyway.*/
952 0 : signal (SIGPIPE, SIG_IGN);
953 : #endif
954 :
955 : /* Ready. Now to our duties. */
956 0 : if (!cmd)
957 0 : cmd = aServer;
958 0 : rc = 0;
959 :
960 0 : if (cmd == aServer)
961 : {
962 : /* Note that this server mode is mainly useful for debugging. */
963 0 : if (argc)
964 0 : wrong_args ("--server");
965 :
966 0 : if (logfile)
967 : {
968 0 : log_set_file (logfile);
969 0 : log_set_prefix (NULL, GPGRT_LOG_WITH_TIME | GPGRT_LOG_WITH_PID);
970 : }
971 :
972 0 : if (debug_wait)
973 : {
974 0 : log_debug ("waiting for debugger - my pid is %u .....\n",
975 0 : (unsigned int)getpid());
976 0 : gnupg_sleep (debug_wait);
977 0 : log_debug ("... okay\n");
978 : }
979 :
980 : #if USE_LDAP
981 0 : ldap_wrapper_launch_thread ();
982 : #endif /*USE_LDAP*/
983 :
984 0 : cert_cache_init ();
985 0 : crl_cache_init ();
986 0 : start_command_handler (ASSUAN_INVALID_FD);
987 0 : shutdown_reaper ();
988 : }
989 0 : else if (cmd == aDaemon)
990 : {
991 : assuan_fd_t fd;
992 : pid_t pid;
993 : int len;
994 : struct sockaddr_un serv_addr;
995 :
996 0 : if (argc)
997 0 : wrong_args ("--daemon");
998 :
999 : /* Now start with logging to a file if this is desired. */
1000 0 : if (logfile)
1001 : {
1002 0 : log_set_file (logfile);
1003 0 : log_set_prefix (NULL, (GPGRT_LOG_WITH_PREFIX
1004 : |GPGRT_LOG_WITH_TIME
1005 : |GPGRT_LOG_WITH_PID));
1006 0 : current_logfile = xstrdup (logfile);
1007 : }
1008 :
1009 : #ifndef HAVE_W32_SYSTEM
1010 0 : if (strchr (socket_name, ':'))
1011 : {
1012 0 : log_error (_("colons are not allowed in the socket name\n"));
1013 0 : dirmngr_exit (1);
1014 : }
1015 : #endif
1016 0 : fd = assuan_sock_new (AF_UNIX, SOCK_STREAM, 0);
1017 0 : if (fd == ASSUAN_INVALID_FD)
1018 : {
1019 0 : log_error (_("can't create socket: %s\n"), strerror (errno));
1020 0 : cleanup ();
1021 0 : dirmngr_exit (1);
1022 : }
1023 :
1024 : {
1025 : int redirected;
1026 :
1027 0 : if (assuan_sock_set_sockaddr_un (socket_name,
1028 : (struct sockaddr*)&serv_addr,
1029 : &redirected))
1030 : {
1031 0 : if (errno == ENAMETOOLONG)
1032 0 : log_error (_("socket name '%s' is too long\n"), socket_name);
1033 : else
1034 0 : log_error ("error preparing socket '%s': %s\n",
1035 : socket_name,
1036 : gpg_strerror (gpg_error_from_syserror ()));
1037 0 : dirmngr_exit (1);
1038 : }
1039 0 : if (redirected)
1040 : {
1041 0 : redir_socket_name = xstrdup (serv_addr.sun_path);
1042 0 : if (opt.verbose)
1043 0 : log_info ("redirecting socket '%s' to '%s'\n",
1044 : socket_name, redir_socket_name);
1045 : }
1046 : }
1047 :
1048 0 : len = SUN_LEN (&serv_addr);
1049 :
1050 0 : rc = assuan_sock_bind (fd, (struct sockaddr*) &serv_addr, len);
1051 0 : if (rc == -1
1052 0 : && (errno == EADDRINUSE
1053 : #ifdef HAVE_W32_SYSTEM
1054 : || errno == EEXIST
1055 : #endif
1056 : ))
1057 : {
1058 : /* Fixme: We should test whether a dirmngr is already running. */
1059 0 : gnupg_remove (redir_socket_name? redir_socket_name : socket_name);
1060 0 : rc = assuan_sock_bind (fd, (struct sockaddr*) &serv_addr, len);
1061 : }
1062 0 : if (rc != -1
1063 0 : && (rc = assuan_sock_get_nonce ((struct sockaddr*) &serv_addr, len, &socket_nonce)))
1064 0 : log_error (_("error getting nonce for the socket\n"));
1065 0 : if (rc == -1)
1066 : {
1067 0 : log_error (_("error binding socket to '%s': %s\n"),
1068 : serv_addr.sun_path,
1069 0 : gpg_strerror (gpg_error_from_errno (errno)));
1070 0 : assuan_sock_close (fd);
1071 0 : dirmngr_exit (1);
1072 : }
1073 0 : cleanup_socket = 1;
1074 :
1075 0 : if (gnupg_chmod (serv_addr.sun_path, "-rwx"))
1076 0 : log_error (_("can't set permissions of '%s': %s\n"),
1077 0 : serv_addr.sun_path, strerror (errno));
1078 :
1079 0 : if (listen (FD2INT (fd), 5) == -1)
1080 : {
1081 0 : log_error (_("listen() failed: %s\n"), strerror (errno));
1082 0 : assuan_sock_close (fd);
1083 0 : dirmngr_exit (1);
1084 : }
1085 :
1086 0 : if (opt.verbose)
1087 0 : log_info (_("listening on socket '%s'\n"), serv_addr.sun_path);
1088 :
1089 0 : es_fflush (NULL);
1090 :
1091 : /* Note: We keep the dirmngr_info output only for the sake of
1092 : existing scripts which might use this to detect a successful
1093 : start of the dirmngr. */
1094 : #ifdef HAVE_W32_SYSTEM
1095 : (void)csh_style;
1096 : (void)nodetach;
1097 :
1098 : pid = getpid ();
1099 : es_printf ("set %s=%s;%lu;1\n",
1100 : DIRMNGR_INFO_NAME, socket_name, (ulong) pid);
1101 : #else
1102 0 : pid = fork();
1103 0 : if (pid == (pid_t)-1)
1104 : {
1105 0 : log_fatal (_("error forking process: %s\n"), strerror (errno));
1106 : dirmngr_exit (1);
1107 : }
1108 :
1109 0 : if (pid)
1110 : { /* We are the parent */
1111 : char *infostr;
1112 :
1113 : /* Don't let cleanup() remove the socket - the child is
1114 : responsible for doing that. */
1115 0 : cleanup_socket = 0;
1116 :
1117 0 : close (fd);
1118 :
1119 : /* Create the info string: <name>:<pid>:<protocol_version> */
1120 0 : if (asprintf (&infostr, "%s=%s:%lu:1",
1121 : DIRMNGR_INFO_NAME, serv_addr.sun_path, (ulong)pid ) < 0)
1122 : {
1123 0 : log_error (_("out of core\n"));
1124 0 : kill (pid, SIGTERM);
1125 0 : dirmngr_exit (1);
1126 : }
1127 : /* Print the environment string, so that the caller can use
1128 : shell's eval to set it. But see above. */
1129 0 : if (csh_style)
1130 : {
1131 0 : *strchr (infostr, '=') = ' ';
1132 0 : es_printf ( "setenv %s;\n", infostr);
1133 : }
1134 : else
1135 : {
1136 0 : es_printf ( "%s; export %s;\n", infostr, DIRMNGR_INFO_NAME);
1137 : }
1138 0 : free (infostr);
1139 0 : exit (0);
1140 : /*NEVER REACHED*/
1141 : } /* end parent */
1142 :
1143 :
1144 : /*
1145 : This is the child
1146 : */
1147 :
1148 : /* Detach from tty and put process into a new session */
1149 0 : if (!nodetach )
1150 : {
1151 : int i;
1152 : unsigned int oldflags;
1153 :
1154 : /* Close stdin, stdout and stderr unless it is the log stream */
1155 0 : for (i=0; i <= 2; i++)
1156 : {
1157 0 : if (!log_test_fd (i) && i != fd )
1158 0 : close (i);
1159 : }
1160 0 : if (setsid() == -1)
1161 : {
1162 0 : log_error ("setsid() failed: %s\n", strerror(errno) );
1163 0 : dirmngr_exit (1);
1164 : }
1165 :
1166 0 : log_get_prefix (&oldflags);
1167 0 : log_set_prefix (NULL, oldflags | GPGRT_LOG_RUN_DETACHED);
1168 0 : opt.running_detached = 1;
1169 :
1170 0 : if (chdir("/"))
1171 : {
1172 0 : log_error ("chdir to / failed: %s\n", strerror (errno));
1173 0 : dirmngr_exit (1);
1174 : }
1175 : }
1176 : #endif
1177 :
1178 : #if USE_LDAP
1179 0 : ldap_wrapper_launch_thread ();
1180 : #endif /*USE_LDAP*/
1181 :
1182 0 : cert_cache_init ();
1183 0 : crl_cache_init ();
1184 0 : handle_connections (fd);
1185 0 : assuan_sock_close (fd);
1186 0 : shutdown_reaper ();
1187 : }
1188 0 : else if (cmd == aListCRLs)
1189 : {
1190 : /* Just list the CRL cache and exit. */
1191 0 : if (argc)
1192 0 : wrong_args ("--list-crls");
1193 : #if USE_LDAP
1194 0 : ldap_wrapper_launch_thread ();
1195 : #endif /*USE_LDAP*/
1196 0 : crl_cache_init ();
1197 0 : crl_cache_list (es_stdout);
1198 : }
1199 0 : else if (cmd == aLoadCRL)
1200 : {
1201 : struct server_control_s ctrlbuf;
1202 :
1203 0 : memset (&ctrlbuf, 0, sizeof ctrlbuf);
1204 0 : dirmngr_init_default_ctrl (&ctrlbuf);
1205 :
1206 : #if USE_LDAP
1207 0 : ldap_wrapper_launch_thread ();
1208 : #endif /*USE_LDAP*/
1209 0 : cert_cache_init ();
1210 0 : crl_cache_init ();
1211 0 : if (!argc)
1212 0 : rc = crl_cache_load (&ctrlbuf, NULL);
1213 : else
1214 : {
1215 0 : for (; !rc && argc; argc--, argv++)
1216 0 : rc = crl_cache_load (&ctrlbuf, *argv);
1217 : }
1218 0 : dirmngr_deinit_default_ctrl (&ctrlbuf);
1219 : }
1220 0 : else if (cmd == aFetchCRL)
1221 : {
1222 : ksba_reader_t reader;
1223 : struct server_control_s ctrlbuf;
1224 :
1225 0 : if (argc != 1)
1226 0 : wrong_args ("--fetch-crl URL");
1227 :
1228 0 : memset (&ctrlbuf, 0, sizeof ctrlbuf);
1229 0 : dirmngr_init_default_ctrl (&ctrlbuf);
1230 :
1231 : #if USE_LDAP
1232 0 : ldap_wrapper_launch_thread ();
1233 : #endif /*USE_LDAP*/
1234 0 : cert_cache_init ();
1235 0 : crl_cache_init ();
1236 0 : rc = crl_fetch (&ctrlbuf, argv[0], &reader);
1237 0 : if (rc)
1238 0 : log_error (_("fetching CRL from '%s' failed: %s\n"),
1239 : argv[0], gpg_strerror (rc));
1240 : else
1241 : {
1242 0 : rc = crl_cache_insert (&ctrlbuf, argv[0], reader);
1243 0 : if (rc)
1244 0 : log_error (_("processing CRL from '%s' failed: %s\n"),
1245 : argv[0], gpg_strerror (rc));
1246 0 : crl_close_reader (reader);
1247 : }
1248 0 : dirmngr_deinit_default_ctrl (&ctrlbuf);
1249 : }
1250 0 : else if (cmd == aFlush)
1251 : {
1252 : /* Delete cache and exit. */
1253 0 : if (argc)
1254 0 : wrong_args ("--flush");
1255 0 : rc = crl_cache_flush();
1256 : }
1257 0 : else if (cmd == aGPGConfTest)
1258 0 : dirmngr_exit (0);
1259 0 : else if (cmd == aGPGConfList)
1260 : {
1261 0 : unsigned long flags = 0;
1262 : char *filename;
1263 : char *filename_esc;
1264 :
1265 : #ifdef HAVE_W32_SYSTEM
1266 : /* On Windows systems, dirmngr always runs as system daemon, and
1267 : the per-user configuration is never used. So we short-cut
1268 : everything to use the global system configuration of dirmngr
1269 : above, and here we set the no change flag to make these
1270 : read-only. */
1271 : flags |= GC_OPT_FLAG_NO_CHANGE;
1272 : #endif
1273 :
1274 : /* First the configuration file. This is not an option, but it
1275 : is vital information for GPG Conf. */
1276 0 : if (!opt.config_filename)
1277 0 : opt.config_filename = make_filename (gnupg_homedir (),
1278 : "dirmngr.conf", NULL );
1279 :
1280 0 : filename = percent_escape (opt.config_filename, NULL);
1281 0 : es_printf ("gpgconf-dirmngr.conf:%lu:\"%s\n",
1282 : GC_OPT_FLAG_DEFAULT, filename);
1283 0 : xfree (filename);
1284 :
1285 0 : es_printf ("verbose:%lu:\n", flags | GC_OPT_FLAG_NONE);
1286 0 : es_printf ("quiet:%lu:\n", flags | GC_OPT_FLAG_NONE);
1287 0 : es_printf ("debug-level:%lu:\"none\n", flags | GC_OPT_FLAG_DEFAULT);
1288 0 : es_printf ("log-file:%lu:\n", flags | GC_OPT_FLAG_NONE);
1289 0 : es_printf ("force:%lu:\n", flags | GC_OPT_FLAG_NONE);
1290 :
1291 : /* --csh and --sh are mutually exclusive, something we can not
1292 : express in GPG Conf. --options is only usable from the
1293 : command line, really. --debug-all interacts with --debug,
1294 : and having both of them is thus problematic. --no-detach is
1295 : also only usable on the command line. --batch is unused. */
1296 :
1297 0 : filename = make_filename (gnupg_homedir (),
1298 : "dirmngr_ldapservers.conf",
1299 : NULL);
1300 0 : filename_esc = percent_escape (filename, NULL);
1301 0 : es_printf ("ldapserverlist-file:%lu:\"%s\n", flags | GC_OPT_FLAG_DEFAULT,
1302 : filename_esc);
1303 0 : xfree (filename_esc);
1304 0 : xfree (filename);
1305 :
1306 0 : es_printf ("ldaptimeout:%lu:%u\n",
1307 : flags | GC_OPT_FLAG_DEFAULT, DEFAULT_LDAP_TIMEOUT);
1308 0 : es_printf ("max-replies:%lu:%u\n",
1309 : flags | GC_OPT_FLAG_DEFAULT, DEFAULT_MAX_REPLIES);
1310 0 : es_printf ("allow-ocsp:%lu:\n", flags | GC_OPT_FLAG_NONE);
1311 0 : es_printf ("ocsp-responder:%lu:\n", flags | GC_OPT_FLAG_NONE);
1312 0 : es_printf ("ocsp-signer:%lu:\n", flags | GC_OPT_FLAG_NONE);
1313 :
1314 0 : es_printf ("faked-system-time:%lu:\n", flags | GC_OPT_FLAG_NONE);
1315 0 : es_printf ("no-greeting:%lu:\n", flags | GC_OPT_FLAG_NONE);
1316 :
1317 0 : es_printf ("disable-http:%lu:\n", flags | GC_OPT_FLAG_NONE);
1318 0 : es_printf ("disable-ldap:%lu:\n", flags | GC_OPT_FLAG_NONE);
1319 0 : es_printf ("honor-http-proxy:%lu\n", flags | GC_OPT_FLAG_NONE);
1320 0 : es_printf ("http-proxy:%lu:\n", flags | GC_OPT_FLAG_NONE);
1321 0 : es_printf ("ldap-proxy:%lu:\n", flags | GC_OPT_FLAG_NONE);
1322 0 : es_printf ("only-ldap-proxy:%lu:\n", flags | GC_OPT_FLAG_NONE);
1323 0 : es_printf ("ignore-ldap-dp:%lu:\n", flags | GC_OPT_FLAG_NONE);
1324 0 : es_printf ("ignore-http-dp:%lu:\n", flags | GC_OPT_FLAG_NONE);
1325 0 : es_printf ("ignore-ocsp-service-url:%lu:\n", flags | GC_OPT_FLAG_NONE);
1326 : /* Note: The next one is to fix a typo in gpgconf - should be
1327 : removed eventually. */
1328 0 : es_printf ("ignore-ocsp-servic-url:%lu:\n", flags | GC_OPT_FLAG_NONE);
1329 :
1330 0 : es_printf ("use-tor:%lu:\n", flags | GC_OPT_FLAG_NONE);
1331 0 : es_printf ("keyserver:%lu:\n", flags | GC_OPT_FLAG_NONE);
1332 : }
1333 0 : cleanup ();
1334 0 : return !!rc;
1335 : }
1336 :
1337 :
1338 : static void
1339 0 : cleanup (void)
1340 : {
1341 0 : crl_cache_deinit ();
1342 0 : cert_cache_deinit (1);
1343 :
1344 : #if USE_LDAP
1345 0 : ldapserver_list_free (opt.ldapservers);
1346 : #endif /*USE_LDAP*/
1347 0 : opt.ldapservers = NULL;
1348 :
1349 0 : if (cleanup_socket)
1350 : {
1351 0 : cleanup_socket = 0;
1352 0 : if (redir_socket_name)
1353 0 : gnupg_remove (redir_socket_name);
1354 0 : else if (socket_name && *socket_name)
1355 0 : gnupg_remove (socket_name);
1356 : }
1357 0 : }
1358 :
1359 :
1360 : void
1361 0 : dirmngr_exit (int rc)
1362 : {
1363 0 : cleanup ();
1364 0 : exit (rc);
1365 : }
1366 :
1367 :
1368 : void
1369 0 : dirmngr_init_default_ctrl (ctrl_t ctrl)
1370 : {
1371 0 : if (opt.http_proxy)
1372 0 : ctrl->http_proxy = xstrdup (opt.http_proxy);
1373 0 : }
1374 :
1375 :
1376 : void
1377 0 : dirmngr_deinit_default_ctrl (ctrl_t ctrl)
1378 : {
1379 0 : if (!ctrl)
1380 0 : return;
1381 0 : xfree (ctrl->http_proxy);
1382 0 : ctrl->http_proxy = NULL;
1383 : }
1384 :
1385 :
1386 : /* Create a list of LDAP servers from the file FILENAME. Returns the
1387 : list or NULL in case of errors.
1388 :
1389 : The format fo such a file is line oriented where empty lines and
1390 : lines starting with a hash mark are ignored. All other lines are
1391 : assumed to be colon seprated with these fields:
1392 :
1393 : 1. field: Hostname
1394 : 2. field: Portnumber
1395 : 3. field: Username
1396 : 4. field: Password
1397 : 5. field: Base DN
1398 :
1399 : */
1400 : #if USE_LDAP
1401 : static ldap_server_t
1402 0 : parse_ldapserver_file (const char* filename)
1403 : {
1404 : char buffer[1024];
1405 : char *p;
1406 : ldap_server_t server, serverstart, *serverend;
1407 : int c;
1408 0 : unsigned int lineno = 0;
1409 : estream_t fp;
1410 :
1411 0 : fp = es_fopen (filename, "r");
1412 0 : if (!fp)
1413 : {
1414 0 : log_error (_("error opening '%s': %s\n"), filename, strerror (errno));
1415 0 : return NULL;
1416 : }
1417 :
1418 0 : serverstart = NULL;
1419 0 : serverend = &serverstart;
1420 0 : while (es_fgets (buffer, sizeof buffer, fp))
1421 : {
1422 0 : lineno++;
1423 0 : if (!*buffer || buffer[strlen(buffer)-1] != '\n')
1424 : {
1425 0 : if (*buffer && es_feof (fp))
1426 : ; /* Last line not terminated - continue. */
1427 : else
1428 : {
1429 0 : log_error (_("%s:%u: line too long - skipped\n"),
1430 : filename, lineno);
1431 0 : while ( (c=es_fgetc (fp)) != EOF && c != '\n')
1432 : ; /* Skip until end of line. */
1433 0 : continue;
1434 : }
1435 : }
1436 : /* Skip empty and comment lines.*/
1437 0 : for (p=buffer; spacep (p); p++)
1438 : ;
1439 0 : if (!*p || *p == '\n' || *p == '#')
1440 0 : continue;
1441 :
1442 : /* Parse the colon separated fields. */
1443 0 : server = ldapserver_parse_one (buffer, filename, lineno);
1444 0 : if (server)
1445 : {
1446 0 : *serverend = server;
1447 0 : serverend = &server->next;
1448 : }
1449 : }
1450 :
1451 0 : if (es_ferror (fp))
1452 0 : log_error (_("error reading '%s': %s\n"), filename, strerror (errno));
1453 0 : es_fclose (fp);
1454 :
1455 0 : return serverstart;
1456 : }
1457 : #endif /*USE_LDAP*/
1458 :
1459 : static fingerprint_list_t
1460 0 : parse_ocsp_signer (const char *string)
1461 : {
1462 : gpg_error_t err;
1463 : char *fname;
1464 : estream_t fp;
1465 : char line[256];
1466 : char *p;
1467 : fingerprint_list_t list, *list_tail, item;
1468 0 : unsigned int lnr = 0;
1469 : int c, i, j;
1470 0 : int errflag = 0;
1471 :
1472 :
1473 : /* Check whether this is not a filename and treat it as a direct
1474 : fingerprint specification. */
1475 0 : if (!strpbrk (string, "/.~\\"))
1476 : {
1477 0 : item = xcalloc (1, sizeof *item);
1478 0 : for (i=j=0; (string[i] == ':' || hexdigitp (string+i)) && j < 40; i++)
1479 0 : if ( string[i] != ':' )
1480 0 : item->hexfpr[j++] = string[i] >= 'a'? (string[i] & 0xdf): string[i];
1481 0 : item->hexfpr[j] = 0;
1482 0 : if (j != 40 || !(spacep (string+i) || !string[i]))
1483 : {
1484 0 : log_error (_("%s:%u: invalid fingerprint detected\n"),
1485 : "--ocsp-signer", 0);
1486 0 : xfree (item);
1487 0 : return NULL;
1488 : }
1489 0 : return item;
1490 : }
1491 :
1492 : /* Well, it is a filename. */
1493 0 : if (*string == '/' || (*string == '~' && string[1] == '/'))
1494 0 : fname = make_filename (string, NULL);
1495 : else
1496 : {
1497 0 : if (string[0] == '.' && string[1] == '/' )
1498 0 : string += 2;
1499 0 : fname = make_filename (gnupg_homedir (), string, NULL);
1500 : }
1501 :
1502 0 : fp = es_fopen (fname, "r");
1503 0 : if (!fp)
1504 : {
1505 0 : err = gpg_error_from_syserror ();
1506 0 : log_error (_("can't open '%s': %s\n"), fname, gpg_strerror (err));
1507 0 : xfree (fname);
1508 0 : return NULL;
1509 : }
1510 :
1511 0 : list = NULL;
1512 0 : list_tail = &list;
1513 : for (;;)
1514 : {
1515 0 : if (!es_fgets (line, DIM(line)-1, fp) )
1516 : {
1517 0 : if (!es_feof (fp))
1518 : {
1519 0 : err = gpg_error_from_syserror ();
1520 0 : log_error (_("%s:%u: read error: %s\n"),
1521 : fname, lnr, gpg_strerror (err));
1522 0 : errflag = 1;
1523 : }
1524 0 : es_fclose (fp);
1525 0 : if (errflag)
1526 : {
1527 0 : while (list)
1528 : {
1529 0 : fingerprint_list_t tmp = list->next;
1530 0 : xfree (list);
1531 0 : list = tmp;
1532 : }
1533 : }
1534 0 : xfree (fname);
1535 0 : return list; /* Ready. */
1536 : }
1537 :
1538 0 : lnr++;
1539 0 : if (!*line || line[strlen(line)-1] != '\n')
1540 : {
1541 : /* Eat until end of line. */
1542 0 : while ( (c=es_getc (fp)) != EOF && c != '\n')
1543 : ;
1544 0 : err = gpg_error (*line? GPG_ERR_LINE_TOO_LONG
1545 : /* */: GPG_ERR_INCOMPLETE_LINE);
1546 0 : log_error (_("%s:%u: read error: %s\n"),
1547 : fname, lnr, gpg_strerror (err));
1548 0 : errflag = 1;
1549 0 : continue;
1550 : }
1551 :
1552 : /* Allow for empty lines and spaces */
1553 0 : for (p=line; spacep (p); p++)
1554 : ;
1555 0 : if (!*p || *p == '\n' || *p == '#')
1556 0 : continue;
1557 :
1558 0 : item = xcalloc (1, sizeof *item);
1559 0 : *list_tail = item;
1560 0 : list_tail = &item->next;
1561 :
1562 0 : for (i=j=0; (p[i] == ':' || hexdigitp (p+i)) && j < 40; i++)
1563 0 : if ( p[i] != ':' )
1564 0 : item->hexfpr[j++] = p[i] >= 'a'? (p[i] & 0xdf): p[i];
1565 0 : item->hexfpr[j] = 0;
1566 0 : if (j != 40 || !(spacep (p+i) || p[i] == '\n'))
1567 : {
1568 0 : log_error (_("%s:%u: invalid fingerprint detected\n"), fname, lnr);
1569 0 : errflag = 1;
1570 : }
1571 0 : i++;
1572 0 : while (spacep (p+i))
1573 0 : i++;
1574 0 : if (p[i] && p[i] != '\n')
1575 0 : log_info (_("%s:%u: garbage at end of line ignored\n"), fname, lnr);
1576 0 : }
1577 : /*NOTREACHED*/
1578 : }
1579 :
1580 :
1581 :
1582 :
1583 : /*
1584 : Stuff used in daemon mode.
1585 : */
1586 :
1587 :
1588 :
1589 : /* Reread parts of the configuration. Note, that this function is
1590 : obviously not thread-safe and should only be called from the NPTH
1591 : signal handler.
1592 :
1593 : Fixme: Due to the way the argument parsing works, we create a
1594 : memory leak here for all string type arguments. There is currently
1595 : no clean way to tell whether the memory for the argument has been
1596 : allocated or points into the process' original arguments. Unless
1597 : we have a mechanism to tell this, we need to live on with this. */
1598 : static void
1599 0 : reread_configuration (void)
1600 : {
1601 : ARGPARSE_ARGS pargs;
1602 : FILE *fp;
1603 0 : unsigned int configlineno = 0;
1604 : int dummy;
1605 :
1606 0 : if (!opt.config_filename)
1607 0 : return; /* No config file. */
1608 :
1609 0 : fp = fopen (opt.config_filename, "r");
1610 0 : if (!fp)
1611 : {
1612 0 : log_error (_("option file '%s': %s\n"),
1613 0 : opt.config_filename, strerror(errno) );
1614 0 : return;
1615 : }
1616 :
1617 0 : parse_rereadable_options (NULL, 1); /* Start from the default values. */
1618 :
1619 0 : memset (&pargs, 0, sizeof pargs);
1620 0 : dummy = 0;
1621 0 : pargs.argc = &dummy;
1622 0 : pargs.flags = 1; /* do not remove the args */
1623 0 : while (optfile_parse (fp, opt.config_filename, &configlineno, &pargs, opts) )
1624 : {
1625 0 : if (pargs.r_opt < -1)
1626 0 : pargs.err = 1; /* Print a warning. */
1627 : else /* Try to parse this option - ignore unchangeable ones. */
1628 0 : parse_rereadable_options (&pargs, 1);
1629 : }
1630 0 : fclose (fp);
1631 :
1632 0 : set_debug ();
1633 0 : set_tor_mode ();
1634 : }
1635 :
1636 :
1637 : /* A global function which allows us to trigger the reload stuff from
1638 : other places. */
1639 : void
1640 0 : dirmngr_sighup_action (void)
1641 : {
1642 0 : log_info (_("SIGHUP received - "
1643 : "re-reading configuration and flushing caches\n"));
1644 0 : reread_configuration ();
1645 0 : cert_cache_deinit (0);
1646 0 : crl_cache_deinit ();
1647 0 : cert_cache_init ();
1648 0 : crl_cache_init ();
1649 0 : }
1650 :
1651 :
1652 :
1653 : /* The signal handler. */
1654 : #ifndef HAVE_W32_SYSTEM
1655 : static void
1656 0 : handle_signal (int signo)
1657 : {
1658 0 : switch (signo)
1659 : {
1660 : case SIGHUP:
1661 0 : dirmngr_sighup_action ();
1662 0 : break;
1663 :
1664 : case SIGUSR1:
1665 0 : cert_cache_print_stats ();
1666 0 : break;
1667 :
1668 : case SIGUSR2:
1669 0 : log_info (_("SIGUSR2 received - no action defined\n"));
1670 0 : break;
1671 :
1672 : case SIGTERM:
1673 0 : if (!shutdown_pending)
1674 0 : log_info (_("SIGTERM received - shutting down ...\n"));
1675 : else
1676 0 : log_info (_("SIGTERM received - still %d active connections\n"),
1677 : active_connections);
1678 0 : shutdown_pending++;
1679 0 : if (shutdown_pending > 2)
1680 : {
1681 0 : log_info (_("shutdown forced\n"));
1682 0 : log_info ("%s %s stopped\n", strusage(11), strusage(13) );
1683 0 : cleanup ();
1684 0 : dirmngr_exit (0);
1685 : }
1686 0 : break;
1687 :
1688 : case SIGINT:
1689 0 : log_info (_("SIGINT received - immediate shutdown\n"));
1690 0 : log_info( "%s %s stopped\n", strusage(11), strusage(13));
1691 0 : cleanup ();
1692 0 : dirmngr_exit (0);
1693 0 : break;
1694 :
1695 : default:
1696 0 : log_info (_("signal %d received - no action defined\n"), signo);
1697 : }
1698 0 : }
1699 : #endif /*!HAVE_W32_SYSTEM*/
1700 :
1701 :
1702 : /* Thread to do the housekeeping. */
1703 : static void *
1704 0 : housekeeping_thread (void *arg)
1705 : {
1706 : static int sentinel;
1707 : time_t curtime;
1708 :
1709 : (void)arg;
1710 :
1711 0 : curtime = gnupg_get_time ();
1712 0 : if (sentinel)
1713 : {
1714 0 : log_info ("housekeeping is already going on\n");
1715 0 : return NULL;
1716 : }
1717 0 : sentinel++;
1718 0 : if (opt.verbose)
1719 0 : log_info ("starting housekeeping\n");
1720 :
1721 0 : ks_hkp_housekeeping (curtime);
1722 :
1723 0 : if (opt.verbose)
1724 0 : log_info ("ready with housekeeping\n");
1725 0 : sentinel--;
1726 0 : return NULL;
1727 :
1728 : }
1729 :
1730 :
1731 : #if GPGRT_GCC_HAVE_PUSH_PRAGMA
1732 : # pragma GCC push_options
1733 : # pragma GCC optimize ("no-strict-overflow")
1734 : #endif
1735 : static int
1736 0 : time_for_housekeeping_p (time_t curtime)
1737 : {
1738 : static time_t last_housekeeping;
1739 :
1740 0 : if (!last_housekeeping)
1741 0 : last_housekeeping = curtime;
1742 :
1743 0 : if (last_housekeeping + HOUSEKEEPING_INTERVAL <= curtime
1744 0 : || last_housekeeping > curtime /*(be prepared for y2038)*/)
1745 : {
1746 0 : last_housekeeping = curtime;
1747 0 : return 1;
1748 : }
1749 0 : return 0;
1750 : }
1751 : #if GPGRT_GCC_HAVE_PUSH_PRAGMA
1752 : # pragma GCC pop_options
1753 : #endif
1754 :
1755 :
1756 : /* This is the worker for the ticker. It is called every few seconds
1757 : and may only do fast operations. */
1758 : static void
1759 0 : handle_tick (void)
1760 : {
1761 : /* Under Windows we don't use signals and need a way for the loop to
1762 : check for the shutdown flag. */
1763 : #ifdef HAVE_W32_SYSTEM
1764 : if (shutdown_pending)
1765 : log_info (_("SIGTERM received - shutting down ...\n"));
1766 : if (shutdown_pending > 2)
1767 : {
1768 : log_info (_("shutdown forced\n"));
1769 : log_info ("%s %s stopped\n", strusage(11), strusage(13) );
1770 : cleanup ();
1771 : dirmngr_exit (0);
1772 : }
1773 : #endif /*HAVE_W32_SYSTEM*/
1774 :
1775 0 : if (time_for_housekeeping_p (gnupg_get_time ()))
1776 : {
1777 : npth_t thread;
1778 : npth_attr_t tattr;
1779 : int err;
1780 :
1781 0 : err = npth_attr_init (&tattr);
1782 0 : if (err)
1783 0 : log_error ("error preparing housekeeping thread: %s\n", strerror (err));
1784 : else
1785 : {
1786 0 : npth_attr_setdetachstate (&tattr, NPTH_CREATE_DETACHED);
1787 0 : err = npth_create (&thread, &tattr, housekeeping_thread, NULL);
1788 0 : if (err)
1789 0 : log_error ("error spawning housekeeping thread: %s\n",
1790 : strerror (err));
1791 0 : npth_attr_destroy (&tattr);
1792 : }
1793 : }
1794 0 : }
1795 :
1796 :
1797 : /* Check the nonce on a new connection. This is a NOP unless we are
1798 : using our Unix domain socket emulation under Windows. */
1799 : static int
1800 0 : check_nonce (assuan_fd_t fd, assuan_sock_nonce_t *nonce)
1801 : {
1802 0 : if (assuan_sock_check_nonce (fd, nonce))
1803 : {
1804 0 : log_info (_("error reading nonce on fd %d: %s\n"),
1805 0 : FD2INT (fd), strerror (errno));
1806 0 : assuan_sock_close (fd);
1807 0 : return -1;
1808 : }
1809 : else
1810 0 : return 0;
1811 : }
1812 :
1813 :
1814 : /* Helper to call a connection's main function. */
1815 : static void *
1816 0 : start_connection_thread (void *arg)
1817 : {
1818 : union int_and_ptr_u argval;
1819 : gnupg_fd_t fd;
1820 :
1821 0 : memset (&argval, 0, sizeof argval);
1822 0 : argval.aptr = arg;
1823 0 : fd = argval.afd;
1824 :
1825 0 : if (check_nonce (fd, &socket_nonce))
1826 : {
1827 0 : log_error ("handler nonce check FAILED\n");
1828 0 : return NULL;
1829 : }
1830 :
1831 : #ifndef HAVE_W32_SYSTEM
1832 0 : npth_setspecific (my_tlskey_current_fd, argval.aptr);
1833 : #endif
1834 :
1835 0 : active_connections++;
1836 0 : if (opt.verbose)
1837 0 : log_info (_("handler for fd %d started\n"), FD2INT (fd));
1838 :
1839 0 : start_command_handler (fd);
1840 :
1841 0 : if (opt.verbose)
1842 0 : log_info (_("handler for fd %d terminated\n"), FD2INT (fd));
1843 0 : active_connections--;
1844 :
1845 : #ifndef HAVE_W32_SYSTEM
1846 0 : argval.afd = ASSUAN_INVALID_FD;
1847 0 : npth_setspecific (my_tlskey_current_fd, argval.aptr);
1848 : #endif
1849 :
1850 0 : return NULL;
1851 : }
1852 :
1853 :
1854 : #ifdef HAVE_INOTIFY_INIT
1855 : /* Read an inotify event and return true if it matches NAME. */
1856 : static int
1857 0 : my_inotify_is_name (int fd, const char *name)
1858 : {
1859 : union {
1860 : struct inotify_event ev;
1861 : char _buf[sizeof (struct inotify_event) + 100 + 1];
1862 : } buf;
1863 : int n;
1864 : const char *s;
1865 :
1866 0 : s = strrchr (name, '/');
1867 0 : if (s && s[1])
1868 0 : name = s + 1;
1869 :
1870 0 : n = npth_read (fd, &buf, sizeof buf);
1871 0 : if (n < sizeof (struct inotify_event))
1872 0 : return 0;
1873 0 : if (buf.ev.len < strlen (name)+1)
1874 0 : return 0;
1875 0 : if (strcmp (buf.ev.name, name))
1876 0 : return 0; /* Not the desired file. */
1877 :
1878 0 : return 1; /* Found. */
1879 : }
1880 : #endif /*HAVE_INOTIFY_INIT*/
1881 :
1882 :
1883 : /* Main loop in daemon mode. */
1884 : static void
1885 0 : handle_connections (assuan_fd_t listen_fd)
1886 : {
1887 : npth_attr_t tattr;
1888 : #ifndef HAVE_W32_SYSTEM
1889 : int signo;
1890 : #endif
1891 : struct sockaddr_un paddr;
1892 0 : socklen_t plen = sizeof( paddr );
1893 : gnupg_fd_t fd;
1894 : int nfd, ret;
1895 : fd_set fdset, read_fdset;
1896 : struct timespec abstime;
1897 : struct timespec curtime;
1898 : struct timespec timeout;
1899 : int saved_errno;
1900 : #ifdef HAVE_INOTIFY_INIT
1901 : int my_inotify_fd;
1902 : #endif /*HAVE_INOTIFY_INIT*/
1903 :
1904 0 : npth_attr_init (&tattr);
1905 0 : npth_attr_setdetachstate (&tattr, NPTH_CREATE_DETACHED);
1906 :
1907 : #ifndef HAVE_W32_SYSTEM /* FIXME */
1908 0 : npth_sigev_init ();
1909 0 : npth_sigev_add (SIGHUP);
1910 0 : npth_sigev_add (SIGUSR1);
1911 0 : npth_sigev_add (SIGUSR2);
1912 0 : npth_sigev_add (SIGINT);
1913 0 : npth_sigev_add (SIGTERM);
1914 0 : npth_sigev_fini ();
1915 : #endif
1916 :
1917 : #ifdef HAVE_INOTIFY_INIT
1918 0 : if (disable_check_own_socket)
1919 0 : my_inotify_fd = -1;
1920 0 : else if ((my_inotify_fd = inotify_init ()) == -1)
1921 0 : log_info ("error enabling fast daemon termination: %s\n",
1922 0 : strerror (errno));
1923 : else
1924 : {
1925 : /* We need to watch the directory for the file because there
1926 : * won't be an IN_DELETE_SELF for a socket file. */
1927 0 : char *slash = strrchr (socket_name, '/');
1928 0 : log_assert (slash && slash[1]);
1929 0 : *slash = 0;
1930 0 : if (inotify_add_watch (my_inotify_fd, socket_name, IN_DELETE) == -1)
1931 : {
1932 0 : close (my_inotify_fd);
1933 0 : my_inotify_fd = -1;
1934 : }
1935 0 : *slash = '/';
1936 : }
1937 : #endif /*HAVE_INOTIFY_INIT*/
1938 :
1939 :
1940 : /* Setup the fdset. It has only one member. This is because we use
1941 : pth_select instead of pth_accept to properly sync timeouts with
1942 : to full second. */
1943 0 : FD_ZERO (&fdset);
1944 0 : FD_SET (FD2INT (listen_fd), &fdset);
1945 0 : nfd = FD2INT (listen_fd);
1946 : #ifdef HAVE_INOTIFY_INIT
1947 0 : if (my_inotify_fd != -1)
1948 : {
1949 0 : FD_SET (my_inotify_fd, &fdset);
1950 0 : if (my_inotify_fd > nfd)
1951 0 : nfd = my_inotify_fd;
1952 : }
1953 : #endif /*HAVE_INOTIFY_INIT*/
1954 :
1955 0 : npth_clock_gettime (&abstime);
1956 0 : abstime.tv_sec += TIMERTICK_INTERVAL;
1957 :
1958 : /* Main loop. */
1959 : for (;;)
1960 : {
1961 : /* Shutdown test. */
1962 0 : if (shutdown_pending)
1963 : {
1964 0 : if (!active_connections)
1965 0 : break; /* ready */
1966 :
1967 : /* Do not accept new connections but keep on running the
1968 : loop to cope with the timer events. */
1969 0 : FD_ZERO (&fdset);
1970 : }
1971 :
1972 : /* Take a copy of the fdset. */
1973 0 : read_fdset = fdset;
1974 :
1975 0 : npth_clock_gettime (&curtime);
1976 0 : if (!(npth_timercmp (&curtime, &abstime, <)))
1977 : {
1978 : /* Timeout. */
1979 0 : handle_tick ();
1980 0 : npth_clock_gettime (&abstime);
1981 0 : abstime.tv_sec += TIMERTICK_INTERVAL;
1982 : }
1983 0 : npth_timersub (&abstime, &curtime, &timeout);
1984 :
1985 : #ifndef HAVE_W32_SYSTEM
1986 0 : ret = npth_pselect (nfd+1, &read_fdset, NULL, NULL, &timeout, npth_sigev_sigmask());
1987 0 : saved_errno = errno;
1988 :
1989 0 : while (npth_sigev_get_pending(&signo))
1990 0 : handle_signal (signo);
1991 : #else
1992 : ret = npth_eselect (nfd+1, &read_fdset, NULL, NULL, &timeout, NULL, NULL);
1993 : saved_errno = errno;
1994 : #endif
1995 :
1996 0 : if (ret == -1 && saved_errno != EINTR)
1997 : {
1998 0 : log_error (_("npth_pselect failed: %s - waiting 1s\n"),
1999 : strerror (saved_errno));
2000 0 : npth_sleep (1);
2001 0 : continue;
2002 : }
2003 :
2004 0 : if (ret <= 0)
2005 : {
2006 : /* Interrupt or timeout. Will be handled when calculating the
2007 : next timeout. */
2008 0 : continue;
2009 : }
2010 :
2011 0 : if (shutdown_pending)
2012 : {
2013 : /* Do not anymore accept connections. */
2014 0 : continue;
2015 : }
2016 :
2017 : #ifdef HAVE_INOTIFY_INIT
2018 0 : if (my_inotify_fd != -1 && FD_ISSET (my_inotify_fd, &read_fdset)
2019 0 : && my_inotify_is_name (my_inotify_fd, socket_name))
2020 : {
2021 0 : shutdown_pending = 1;
2022 0 : log_info ("socket file has been removed - shutting down\n");
2023 : }
2024 : #endif /*HAVE_INOTIFY_INIT*/
2025 :
2026 0 : if (FD_ISSET (FD2INT (listen_fd), &read_fdset))
2027 : {
2028 0 : plen = sizeof paddr;
2029 0 : fd = INT2FD (npth_accept (FD2INT(listen_fd),
2030 : (struct sockaddr *)&paddr, &plen));
2031 0 : if (fd == GNUPG_INVALID_FD)
2032 : {
2033 0 : log_error ("accept failed: %s\n", strerror (errno));
2034 : }
2035 : else
2036 : {
2037 : char threadname[50];
2038 : union int_and_ptr_u argval;
2039 : npth_t thread;
2040 :
2041 0 : memset (&argval, 0, sizeof argval);
2042 0 : argval.afd = fd;
2043 0 : snprintf (threadname, sizeof threadname-1,
2044 : "conn fd=%d", FD2INT(fd));
2045 0 : threadname[sizeof threadname -1] = 0;
2046 :
2047 0 : ret = npth_create (&thread, &tattr,
2048 : start_connection_thread, argval.aptr);
2049 0 : if (ret)
2050 : {
2051 0 : log_error ("error spawning connection handler: %s\n",
2052 : strerror (ret) );
2053 0 : assuan_sock_close (fd);
2054 : }
2055 0 : npth_setname_np (thread, threadname);
2056 : }
2057 0 : fd = GNUPG_INVALID_FD;
2058 : }
2059 0 : }
2060 :
2061 : #ifdef HAVE_INOTIFY_INIT
2062 0 : if (my_inotify_fd != -1)
2063 0 : close (my_inotify_fd);
2064 : #endif /*HAVE_INOTIFY_INIT*/
2065 0 : npth_attr_destroy (&tattr);
2066 0 : cleanup ();
2067 0 : log_info ("%s %s stopped\n", strusage(11), strusage(13));
2068 0 : }
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