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 <https://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 : aSupervised,
92 : aListCRLs,
93 : aLoadCRL,
94 : aFetchCRL,
95 : aShutdown,
96 : aFlush,
97 : aGPGConfList,
98 : aGPGConfTest,
99 :
100 : oOptions,
101 : oDebug,
102 : oDebugAll,
103 : oDebugWait,
104 : oDebugLevel,
105 : oGnutlsDebug,
106 : oNoGreeting,
107 : oNoOptions,
108 : oHomedir,
109 : oNoDetach,
110 : oLogFile,
111 : oBatch,
112 : oDisableHTTP,
113 : oDisableLDAP,
114 : oIgnoreLDAPDP,
115 : oIgnoreHTTPDP,
116 : oIgnoreOCSPSvcUrl,
117 : oHonorHTTPProxy,
118 : oHTTPProxy,
119 : oLDAPProxy,
120 : oOnlyLDAPProxy,
121 : oLDAPFile,
122 : oLDAPTimeout,
123 : oLDAPAddServers,
124 : oOCSPResponder,
125 : oOCSPSigner,
126 : oOCSPMaxClockSkew,
127 : oOCSPMaxPeriod,
128 : oOCSPCurrentPeriod,
129 : oMaxReplies,
130 : oHkpCaCert,
131 : oFakedSystemTime,
132 : oForce,
133 : oAllowOCSP,
134 : oAllowVersionCheck,
135 : oSocketName,
136 : oLDAPWrapperProgram,
137 : oHTTPWrapperProgram,
138 : oIgnoreCertExtension,
139 : oUseTor,
140 : oKeyServer,
141 : oNameServer,
142 : oDisableCheckOwnSocket,
143 : aTest
144 : };
145 :
146 :
147 :
148 : static ARGPARSE_OPTS opts[] = {
149 :
150 : ARGPARSE_group (300, N_("@Commands:\n ")),
151 :
152 : ARGPARSE_c (aServer, "server", N_("run in server mode (foreground)") ),
153 : ARGPARSE_c (aDaemon, "daemon", N_("run in daemon mode (background)") ),
154 : #ifndef HAVE_W32_SYSTEM
155 : ARGPARSE_c (aSupervised, "supervised", N_("run in supervised mode")),
156 : #endif
157 : ARGPARSE_c (aListCRLs, "list-crls", N_("list the contents of the CRL cache")),
158 : ARGPARSE_c (aLoadCRL, "load-crl", N_("|FILE|load CRL from FILE into cache")),
159 : ARGPARSE_c (aFetchCRL, "fetch-crl", N_("|URL|fetch a CRL from URL")),
160 : ARGPARSE_c (aShutdown, "shutdown", N_("shutdown the dirmngr")),
161 : ARGPARSE_c (aFlush, "flush", N_("flush the cache")),
162 : ARGPARSE_c (aGPGConfList, "gpgconf-list", "@"),
163 : ARGPARSE_c (aGPGConfTest, "gpgconf-test", "@"),
164 :
165 : ARGPARSE_group (301, N_("@\nOptions:\n ")),
166 :
167 : ARGPARSE_s_n (oVerbose, "verbose", N_("verbose")),
168 : ARGPARSE_s_n (oQuiet, "quiet", N_("be somewhat more quiet")),
169 : ARGPARSE_s_n (oSh, "sh", N_("sh-style command output")),
170 : ARGPARSE_s_n (oCsh, "csh", N_("csh-style command output")),
171 : ARGPARSE_s_s (oOptions, "options", N_("|FILE|read options from FILE")),
172 : ARGPARSE_s_s (oDebugLevel, "debug-level",
173 : N_("|LEVEL|set the debugging level to LEVEL")),
174 : ARGPARSE_s_n (oNoDetach, "no-detach", N_("do not detach from the console")),
175 : ARGPARSE_s_s (oLogFile, "log-file",
176 : N_("|FILE|write server mode logs to FILE")),
177 : ARGPARSE_s_n (oBatch, "batch", N_("run without asking a user")),
178 : ARGPARSE_s_n (oForce, "force", N_("force loading of outdated CRLs")),
179 : ARGPARSE_s_n (oAllowOCSP, "allow-ocsp", N_("allow sending OCSP requests")),
180 : ARGPARSE_s_n (oAllowVersionCheck, "allow-version-check",
181 : N_("allow online software version check")),
182 : ARGPARSE_s_n (oDisableHTTP, "disable-http", N_("inhibit the use of HTTP")),
183 : ARGPARSE_s_n (oDisableLDAP, "disable-ldap", N_("inhibit the use of LDAP")),
184 : ARGPARSE_s_n (oIgnoreHTTPDP,"ignore-http-dp",
185 : N_("ignore HTTP CRL distribution points")),
186 : ARGPARSE_s_n (oIgnoreLDAPDP,"ignore-ldap-dp",
187 : N_("ignore LDAP CRL distribution points")),
188 : ARGPARSE_s_n (oIgnoreOCSPSvcUrl, "ignore-ocsp-service-url",
189 : N_("ignore certificate contained OCSP service URLs")),
190 :
191 : ARGPARSE_s_s (oHTTPProxy, "http-proxy",
192 : N_("|URL|redirect all HTTP requests to URL")),
193 : ARGPARSE_s_s (oLDAPProxy, "ldap-proxy",
194 : N_("|HOST|use HOST for LDAP queries")),
195 : ARGPARSE_s_n (oOnlyLDAPProxy, "only-ldap-proxy",
196 : N_("do not use fallback hosts with --ldap-proxy")),
197 :
198 : ARGPARSE_s_s (oLDAPFile, "ldapserverlist-file",
199 : N_("|FILE|read LDAP server list from FILE")),
200 : ARGPARSE_s_n (oLDAPAddServers, "add-servers",
201 : N_("add new servers discovered in CRL distribution"
202 : " points to serverlist")),
203 : ARGPARSE_s_i (oLDAPTimeout, "ldaptimeout",
204 : N_("|N|set LDAP timeout to N seconds")),
205 :
206 : ARGPARSE_s_s (oOCSPResponder, "ocsp-responder",
207 : N_("|URL|use OCSP responder at URL")),
208 : ARGPARSE_s_s (oOCSPSigner, "ocsp-signer",
209 : N_("|FPR|OCSP response signed by FPR")),
210 : ARGPARSE_s_i (oOCSPMaxClockSkew, "ocsp-max-clock-skew", "@"),
211 : ARGPARSE_s_i (oOCSPMaxPeriod, "ocsp-max-period", "@"),
212 : ARGPARSE_s_i (oOCSPCurrentPeriod, "ocsp-current-period", "@"),
213 :
214 : ARGPARSE_s_i (oMaxReplies, "max-replies",
215 : N_("|N|do not return more than N items in one query")),
216 :
217 : ARGPARSE_s_s (oNameServer, "nameserver", "@"),
218 : ARGPARSE_s_s (oKeyServer, "keyserver", "@"),
219 : ARGPARSE_s_s (oHkpCaCert, "hkp-cacert",
220 : N_("|FILE|use the CA certificates in FILE for HKP over TLS")),
221 :
222 : ARGPARSE_s_n (oUseTor, "use-tor", N_("route all network traffic via Tor")),
223 :
224 : ARGPARSE_s_s (oSocketName, "socket-name", "@"), /* Only for debugging. */
225 :
226 : ARGPARSE_s_u (oFakedSystemTime, "faked-system-time", "@"), /*(epoch time)*/
227 : ARGPARSE_s_s (oDebug, "debug", "@"),
228 : ARGPARSE_s_n (oDebugAll, "debug-all", "@"),
229 : ARGPARSE_s_i (oGnutlsDebug, "gnutls-debug", "@"),
230 : ARGPARSE_s_i (oGnutlsDebug, "tls-debug", "@"),
231 : ARGPARSE_s_i (oDebugWait, "debug-wait", "@"),
232 : ARGPARSE_s_n (oDisableCheckOwnSocket, "disable-check-own-socket", "@"),
233 : ARGPARSE_s_n (oNoGreeting, "no-greeting", "@"),
234 : ARGPARSE_s_s (oHomedir, "homedir", "@"),
235 : ARGPARSE_s_s (oLDAPWrapperProgram, "ldap-wrapper-program", "@"),
236 : ARGPARSE_s_s (oHTTPWrapperProgram, "http-wrapper-program", "@"),
237 : ARGPARSE_s_n (oHonorHTTPProxy, "honor-http-proxy", "@"),
238 : ARGPARSE_s_s (oIgnoreCertExtension,"ignore-cert-extension", "@"),
239 :
240 : ARGPARSE_group (302,N_("@\n(See the \"info\" manual for a complete listing "
241 : "of all commands and options)\n")),
242 :
243 : ARGPARSE_end ()
244 : };
245 :
246 : /* The list of supported debug flags. */
247 : static struct debug_flags_s debug_flags [] =
248 : {
249 : { DBG_X509_VALUE , "x509" },
250 : { DBG_CRYPTO_VALUE , "crypto" },
251 : { DBG_MEMORY_VALUE , "memory" },
252 : { DBG_CACHE_VALUE , "cache" },
253 : { DBG_MEMSTAT_VALUE, "memstat" },
254 : { DBG_HASHING_VALUE, "hashing" },
255 : { DBG_IPC_VALUE , "ipc" },
256 : { DBG_LOOKUP_VALUE , "lookup" },
257 : { 77, NULL } /* 77 := Do not exit on "help" or "?". */
258 : };
259 :
260 : #define DEFAULT_MAX_REPLIES 10
261 : #define DEFAULT_LDAP_TIMEOUT 100 /* arbitrary large timeout */
262 :
263 : /* For the cleanup handler we need to keep track of the socket's name. */
264 : static const char *socket_name;
265 : /* If the socket has been redirected, this is the name of the
266 : redirected socket.. */
267 : static const char *redir_socket_name;
268 :
269 : /* We need to keep track of the server's nonces (these are dummies for
270 : POSIX systems). */
271 : static assuan_sock_nonce_t socket_nonce;
272 :
273 : /* Only if this flag has been set will we remove the socket file. */
274 : static int cleanup_socket;
275 :
276 : /* Keep track of the current log file so that we can avoid updating
277 : the log file after a SIGHUP if it didn't changed. Malloced. */
278 : static char *current_logfile;
279 :
280 : /* Helper to implement --debug-level. */
281 : static const char *debug_level;
282 :
283 : /* Helper to set the NTBTLS or GNUTLS log level. */
284 : static int opt_gnutls_debug = -1;
285 :
286 : /* Flag indicating that a shutdown has been requested. */
287 : static volatile int shutdown_pending;
288 :
289 : /* Flags to indicate that we shall not watch our own socket. */
290 : static int disable_check_own_socket;
291 :
292 : /* Counter for the active connections. */
293 : static int active_connections;
294 :
295 : /* This flag is set by any network access and used by the housekeeping
296 : * thread to run background network tasks. */
297 : static int network_activity_seen;
298 :
299 : /* The timer tick used for housekeeping stuff. */
300 : #define TIMERTICK_INTERVAL (60)
301 :
302 : /* How oft to run the housekeeping. */
303 : #define HOUSEKEEPING_INTERVAL (600)
304 :
305 :
306 : /* This union is used to avoid compiler warnings in case a pointer is
307 : 64 bit and an int 32 bit. We store an integer in a pointer and get
308 : it back later (npth_getspecific et al.). */
309 : union int_and_ptr_u
310 : {
311 : int aint;
312 : assuan_fd_t afd;
313 : void *aptr;
314 : };
315 :
316 :
317 :
318 : /* The key used to store the current file descriptor in the thread
319 : local storage. We use this in conjunction with the
320 : log_set_pid_suffix_cb feature. */
321 : #ifndef HAVE_W32_SYSTEM
322 : static int my_tlskey_current_fd;
323 : #endif
324 :
325 : /* Prototypes. */
326 : static void cleanup (void);
327 : #if USE_LDAP
328 : static ldap_server_t parse_ldapserver_file (const char* filename);
329 : #endif /*USE_LDAP*/
330 : static fingerprint_list_t parse_ocsp_signer (const char *string);
331 : static void netactivity_action (void);
332 : static void handle_connections (assuan_fd_t listen_fd);
333 :
334 : /* NPth wrapper function definitions. */
335 0 : ASSUAN_SYSTEM_NPTH_IMPL;
336 :
337 : static const char *
338 0 : my_strusage( int level )
339 : {
340 : const char *p;
341 0 : switch ( level )
342 : {
343 0 : case 11: p = "@DIRMNGR@ (@GNUPG@)";
344 0 : break;
345 0 : case 13: p = VERSION; break;
346 0 : case 17: p = PRINTABLE_OS_NAME; break;
347 : /* TRANSLATORS: @EMAIL@ will get replaced by the actual bug
348 : reporting address. This is so that we can change the
349 : reporting address without breaking the translations. */
350 0 : case 19: p = _("Please report bugs to <@EMAIL@>.\n"); break;
351 0 : case 49: p = PACKAGE_BUGREPORT; break;
352 : case 1:
353 0 : case 40: p = _("Usage: @DIRMNGR@ [options] (-h for help)");
354 0 : break;
355 0 : case 41: p = _("Syntax: @DIRMNGR@ [options] [command [args]]\n"
356 : "Keyserver, CRL, and OCSP access for @GNUPG@\n");
357 0 : break;
358 :
359 0 : default: p = NULL;
360 : }
361 0 : return p;
362 : }
363 :
364 :
365 : /* Callback from libksba to hash a provided buffer. Our current
366 : implementation does only allow SHA-1 for hashing. This may be
367 : extended by mapping the name, testing for algorithm availibility
368 : and adjust the length checks accordingly. */
369 : static gpg_error_t
370 0 : my_ksba_hash_buffer (void *arg, const char *oid,
371 : const void *buffer, size_t length, size_t resultsize,
372 : unsigned char *result, size_t *resultlen)
373 : {
374 : (void)arg;
375 :
376 0 : if (oid && strcmp (oid, "1.3.14.3.2.26"))
377 0 : return gpg_error (GPG_ERR_NOT_SUPPORTED);
378 0 : if (resultsize < 20)
379 0 : return gpg_error (GPG_ERR_BUFFER_TOO_SHORT);
380 0 : gcry_md_hash_buffer (2, result, buffer, length);
381 0 : *resultlen = 20;
382 0 : return 0;
383 : }
384 :
385 :
386 : /* GNUTLS log function callback. */
387 : #ifdef HTTP_USE_GNUTLS
388 : static void
389 0 : my_gnutls_log (int level, const char *text)
390 : {
391 : int n;
392 :
393 0 : n = strlen (text);
394 0 : while (n && text[n-1] == '\n')
395 0 : n--;
396 :
397 0 : log_debug ("gnutls:L%d: %.*s\n", level, n, text);
398 0 : }
399 : #endif /*HTTP_USE_GNUTLS*/
400 :
401 : /* Setup the debugging. With a LEVEL of NULL only the active debug
402 : flags are propagated to the subsystems. With LEVEL set, a specific
403 : set of debug flags is set; thus overriding all flags already
404 : set. */
405 : static void
406 0 : set_debug (void)
407 : {
408 0 : int numok = (debug_level && digitp (debug_level));
409 0 : int numlvl = numok? atoi (debug_level) : 0;
410 :
411 0 : if (!debug_level)
412 : ;
413 0 : else if (!strcmp (debug_level, "none") || (numok && numlvl < 1))
414 0 : opt.debug = 0;
415 0 : else if (!strcmp (debug_level, "basic") || (numok && numlvl <= 2))
416 0 : opt.debug = DBG_IPC_VALUE;
417 0 : else if (!strcmp (debug_level, "advanced") || (numok && numlvl <= 5))
418 0 : opt.debug = (DBG_IPC_VALUE|DBG_X509_VALUE|DBG_LOOKUP_VALUE);
419 0 : else if (!strcmp (debug_level, "expert") || (numok && numlvl <= 8))
420 0 : opt.debug = (DBG_IPC_VALUE|DBG_X509_VALUE|DBG_LOOKUP_VALUE
421 : |DBG_CACHE_VALUE|DBG_CRYPTO_VALUE);
422 0 : else if (!strcmp (debug_level, "guru") || numok)
423 : {
424 0 : opt.debug = ~0;
425 : /* Unless the "guru" string has been used we don't want to allow
426 : hashing debugging. The rationale is that people tend to
427 : select the highest debug value and would then clutter their
428 : disk with debug files which may reveal confidential data. */
429 0 : if (numok)
430 0 : opt.debug &= ~(DBG_HASHING_VALUE);
431 : }
432 : else
433 : {
434 0 : log_error (_("invalid debug-level '%s' given\n"), debug_level);
435 0 : log_info (_("valid debug levels are: %s\n"),
436 : "none, basic, advanced, expert, guru");
437 0 : opt.debug = 0; /* Reset debugging, so that prior debug
438 : statements won't have an undesired effect. */
439 : }
440 :
441 :
442 0 : if (opt.debug && !opt.verbose)
443 : {
444 0 : opt.verbose = 1;
445 0 : gcry_control (GCRYCTL_SET_VERBOSITY, (int)opt.verbose);
446 : }
447 0 : if (opt.debug && opt.quiet)
448 0 : opt.quiet = 0;
449 :
450 0 : if (opt.debug & DBG_CRYPTO_VALUE )
451 0 : gcry_control (GCRYCTL_SET_DEBUG_FLAGS, 1);
452 :
453 : #if HTTP_USE_NTBTLS
454 : if (opt_gnutls_debug >= 0)
455 : {
456 : ntbtls_set_debug (opt_gnutls_debug, NULL, NULL);
457 : }
458 : #elif HTTP_USE_GNUTLS
459 0 : if (opt_gnutls_debug >= 0)
460 : {
461 0 : gnutls_global_set_log_function (my_gnutls_log);
462 0 : gnutls_global_set_log_level (opt_gnutls_debug);
463 : }
464 : #endif /*HTTP_USE_GNUTLS*/
465 :
466 0 : if (opt.debug)
467 0 : parse_debug_flag (NULL, &opt.debug, debug_flags);
468 0 : }
469 :
470 :
471 : static void
472 0 : set_tor_mode (void)
473 : {
474 0 : if (opt.use_tor)
475 : {
476 0 : if (assuan_sock_set_flag (ASSUAN_INVALID_FD, "tor-mode", 1))
477 : {
478 0 : log_error ("error enabling Tor mode: %s\n", strerror (errno));
479 0 : log_info ("(is your Libassuan recent enough?)\n");
480 : }
481 : }
482 0 : }
483 :
484 :
485 : static void
486 0 : wrong_args (const char *text)
487 : {
488 0 : es_fprintf (es_stderr, _("usage: %s [options] "), DIRMNGR_NAME);
489 0 : es_fputs (text, es_stderr);
490 0 : es_putc ('\n', es_stderr);
491 0 : dirmngr_exit (2);
492 0 : }
493 :
494 :
495 : /* Helper to stop the reaper thread for the ldap wrapper. */
496 : static void
497 0 : shutdown_reaper (void)
498 : {
499 : #if USE_LDAP
500 0 : ldap_wrapper_wait_connections ();
501 : #endif
502 0 : }
503 :
504 :
505 : /* Handle options which are allowed to be reset after program start.
506 : Return true if the current option in PARGS could be handled and
507 : false if not. As a special feature, passing a value of NULL for
508 : PARGS, resets the options to the default. REREAD should be set
509 : true if it is not the initial option parsing. */
510 : static int
511 0 : parse_rereadable_options (ARGPARSE_ARGS *pargs, int reread)
512 : {
513 0 : if (!pargs)
514 : { /* Reset mode. */
515 0 : opt.quiet = 0;
516 0 : opt.verbose = 0;
517 0 : opt.debug = 0;
518 0 : opt.ldap_wrapper_program = NULL;
519 0 : opt.disable_http = 0;
520 0 : opt.disable_ldap = 0;
521 0 : opt.honor_http_proxy = 0;
522 0 : opt.http_proxy = NULL;
523 0 : opt.ldap_proxy = NULL;
524 0 : opt.only_ldap_proxy = 0;
525 0 : opt.ignore_http_dp = 0;
526 0 : opt.ignore_ldap_dp = 0;
527 0 : opt.ignore_ocsp_service_url = 0;
528 0 : opt.allow_ocsp = 0;
529 0 : opt.allow_version_check = 0;
530 0 : opt.ocsp_responder = NULL;
531 0 : opt.ocsp_max_clock_skew = 10 * 60; /* 10 minutes. */
532 0 : opt.ocsp_max_period = 90 * 86400; /* 90 days. */
533 0 : opt.ocsp_current_period = 3 * 60 * 60; /* 3 hours. */
534 0 : opt.max_replies = DEFAULT_MAX_REPLIES;
535 0 : while (opt.ocsp_signer)
536 : {
537 0 : fingerprint_list_t tmp = opt.ocsp_signer->next;
538 0 : xfree (opt.ocsp_signer);
539 0 : opt.ocsp_signer = tmp;
540 : }
541 0 : FREE_STRLIST (opt.ignored_cert_extensions);
542 0 : http_register_tls_ca (NULL);
543 0 : FREE_STRLIST (opt.keyserver);
544 : /* Note: We do not allow resetting of opt.use_tor at runtime. */
545 0 : disable_check_own_socket = 0;
546 0 : return 1;
547 : }
548 :
549 0 : switch (pargs->r_opt)
550 : {
551 0 : case oQuiet: opt.quiet = 1; break;
552 0 : case oVerbose: opt.verbose++; break;
553 : case oDebug:
554 0 : parse_debug_flag (pargs->r.ret_str, &opt.debug, debug_flags);
555 0 : break;
556 0 : case oDebugAll: opt.debug = ~0; break;
557 0 : case oDebugLevel: debug_level = pargs->r.ret_str; break;
558 0 : case oGnutlsDebug: opt_gnutls_debug = pargs->r.ret_int; break;
559 :
560 : case oLogFile:
561 0 : if (!reread)
562 0 : return 0; /* Not handled. */
563 0 : if (!current_logfile || !pargs->r.ret_str
564 0 : || strcmp (current_logfile, pargs->r.ret_str))
565 : {
566 0 : log_set_file (pargs->r.ret_str);
567 0 : xfree (current_logfile);
568 0 : current_logfile = xtrystrdup (pargs->r.ret_str);
569 : }
570 0 : break;
571 :
572 0 : case oDisableCheckOwnSocket: disable_check_own_socket = 1; break;
573 :
574 : case oLDAPWrapperProgram:
575 0 : opt.ldap_wrapper_program = pargs->r.ret_str;
576 0 : break;
577 : case oHTTPWrapperProgram:
578 0 : opt.http_wrapper_program = pargs->r.ret_str;
579 0 : break;
580 :
581 0 : case oDisableHTTP: opt.disable_http = 1; break;
582 0 : case oDisableLDAP: opt.disable_ldap = 1; break;
583 0 : case oHonorHTTPProxy: opt.honor_http_proxy = 1; break;
584 0 : case oHTTPProxy: opt.http_proxy = pargs->r.ret_str; break;
585 0 : case oLDAPProxy: opt.ldap_proxy = pargs->r.ret_str; break;
586 0 : case oOnlyLDAPProxy: opt.only_ldap_proxy = 1; break;
587 0 : case oIgnoreHTTPDP: opt.ignore_http_dp = 1; break;
588 0 : case oIgnoreLDAPDP: opt.ignore_ldap_dp = 1; break;
589 0 : case oIgnoreOCSPSvcUrl: opt.ignore_ocsp_service_url = 1; break;
590 :
591 0 : case oAllowOCSP: opt.allow_ocsp = 1; break;
592 0 : case oAllowVersionCheck: opt.allow_version_check = 1; break;
593 0 : case oOCSPResponder: opt.ocsp_responder = pargs->r.ret_str; break;
594 : case oOCSPSigner:
595 0 : opt.ocsp_signer = parse_ocsp_signer (pargs->r.ret_str);
596 0 : break;
597 0 : case oOCSPMaxClockSkew: opt.ocsp_max_clock_skew = pargs->r.ret_int; break;
598 0 : case oOCSPMaxPeriod: opt.ocsp_max_period = pargs->r.ret_int; break;
599 0 : case oOCSPCurrentPeriod: opt.ocsp_current_period = pargs->r.ret_int; break;
600 :
601 0 : case oMaxReplies: opt.max_replies = pargs->r.ret_int; break;
602 :
603 : case oHkpCaCert:
604 : {
605 : char *tmpname;
606 :
607 : /* Do tilde expansion and make path absolute. */
608 0 : tmpname = make_absfilename (pargs->r.ret_str, NULL);
609 0 : http_register_tls_ca (tmpname);
610 0 : xfree (tmpname);
611 : }
612 0 : break;
613 :
614 : case oIgnoreCertExtension:
615 0 : add_to_strlist (&opt.ignored_cert_extensions, pargs->r.ret_str);
616 0 : break;
617 :
618 0 : case oUseTor: opt.use_tor = 1; break;
619 :
620 : case oKeyServer:
621 0 : if (*pargs->r.ret_str)
622 0 : add_to_strlist (&opt.keyserver, pargs->r.ret_str);
623 0 : break;
624 :
625 : case oNameServer:
626 0 : set_dns_nameserver (pargs->r.ret_str);
627 0 : break;
628 :
629 : default:
630 0 : return 0; /* Not handled. */
631 : }
632 :
633 0 : return 1; /* Handled. */
634 : }
635 :
636 :
637 : #ifndef HAVE_W32_SYSTEM
638 : static int
639 0 : pid_suffix_callback (unsigned long *r_suffix)
640 : {
641 : union int_and_ptr_u value;
642 :
643 0 : memset (&value, 0, sizeof value);
644 0 : value.aptr = npth_getspecific (my_tlskey_current_fd);
645 0 : *r_suffix = value.aint;
646 0 : return (*r_suffix != -1); /* Use decimal representation. */
647 : }
648 : #endif /*!HAVE_W32_SYSTEM*/
649 :
650 :
651 : static void
652 0 : thread_init (void)
653 : {
654 0 : npth_init ();
655 0 : gpgrt_set_syscall_clamp (npth_unprotect, npth_protect);
656 :
657 : /* Now with NPth running we can set the logging callback. Our
658 : windows implementation does not yet feature the NPth TLS
659 : functions. */
660 : #ifndef HAVE_W32_SYSTEM
661 0 : if (npth_key_create (&my_tlskey_current_fd, NULL) == 0)
662 0 : if (npth_setspecific (my_tlskey_current_fd, NULL) == 0)
663 0 : log_set_pid_suffix_cb (pid_suffix_callback);
664 : #endif /*!HAVE_W32_SYSTEM*/
665 0 : }
666 :
667 :
668 : int
669 0 : main (int argc, char **argv)
670 : {
671 0 : enum cmd_and_opt_values cmd = 0;
672 : ARGPARSE_ARGS pargs;
673 : int orig_argc;
674 : char **orig_argv;
675 0 : FILE *configfp = NULL;
676 0 : char *configname = NULL;
677 : const char *shell;
678 : unsigned configlineno;
679 0 : int parse_debug = 0;
680 0 : int default_config =1;
681 0 : int greeting = 0;
682 0 : int nogreeting = 0;
683 0 : int nodetach = 0;
684 0 : int csh_style = 0;
685 0 : char *logfile = NULL;
686 : #if USE_LDAP
687 0 : char *ldapfile = NULL;
688 : #endif /*USE_LDAP*/
689 0 : int debug_wait = 0;
690 : int rc;
691 : struct assuan_malloc_hooks malloc_hooks;
692 :
693 0 : early_system_init ();
694 0 : set_strusage (my_strusage);
695 0 : log_set_prefix (DIRMNGR_NAME, GPGRT_LOG_WITH_PREFIX | GPGRT_LOG_WITH_PID);
696 :
697 : /* Make sure that our subsystems are ready. */
698 0 : i18n_init ();
699 0 : init_common_subsystems (&argc, &argv);
700 :
701 0 : gcry_control (GCRYCTL_DISABLE_SECMEM, 0);
702 :
703 : /* Check that the libraries are suitable. Do it here because
704 : the option parsing may need services of the libraries. */
705 0 : if (!ksba_check_version (NEED_KSBA_VERSION) )
706 0 : log_fatal( _("%s is too old (need %s, have %s)\n"), "libksba",
707 : NEED_KSBA_VERSION, ksba_check_version (NULL) );
708 :
709 0 : ksba_set_malloc_hooks (gcry_malloc, gcry_realloc, gcry_free );
710 0 : ksba_set_hash_buffer_function (my_ksba_hash_buffer, NULL);
711 :
712 : /* Init TLS library. */
713 : #if HTTP_USE_NTBTLS
714 : if (!ntbtls_check_version (NEED_NTBTLS_VERSION) )
715 : log_fatal( _("%s is too old (need %s, have %s)\n"), "ntbtls",
716 : NEED_NTBTLS_VERSION, ntbtls_check_version (NULL) );
717 : #elif HTTP_USE_GNUTLS
718 0 : rc = gnutls_global_init ();
719 0 : if (rc)
720 0 : log_fatal ("gnutls_global_init failed: %s\n", gnutls_strerror (rc));
721 : #endif /*HTTP_USE_GNUTLS*/
722 :
723 : /* Init Assuan. */
724 0 : malloc_hooks.malloc = gcry_malloc;
725 0 : malloc_hooks.realloc = gcry_realloc;
726 0 : malloc_hooks.free = gcry_free;
727 0 : assuan_set_malloc_hooks (&malloc_hooks);
728 0 : assuan_set_assuan_log_prefix (log_get_prefix (NULL));
729 0 : assuan_set_gpg_err_source (GPG_ERR_SOURCE_DEFAULT);
730 0 : assuan_set_system_hooks (ASSUAN_SYSTEM_NPTH);
731 0 : assuan_sock_init ();
732 0 : setup_libassuan_logging (&opt.debug, dirmngr_assuan_log_monitor);
733 :
734 0 : setup_libgcrypt_logging ();
735 :
736 : /* Setup defaults. */
737 0 : shell = getenv ("SHELL");
738 0 : if (shell && strlen (shell) >= 3 && !strcmp (shell+strlen (shell)-3, "csh") )
739 0 : csh_style = 1;
740 :
741 : /* Reset rereadable options to default values. */
742 0 : parse_rereadable_options (NULL, 0);
743 :
744 : /* LDAP defaults. */
745 0 : opt.add_new_ldapservers = 0;
746 0 : opt.ldaptimeout = DEFAULT_LDAP_TIMEOUT;
747 :
748 : /* Other defaults. */
749 :
750 : /* Check whether we have a config file given on the commandline */
751 0 : orig_argc = argc;
752 0 : orig_argv = argv;
753 0 : pargs.argc = &argc;
754 0 : pargs.argv = &argv;
755 0 : pargs.flags= 1|(1<<6); /* do not remove the args, ignore version */
756 0 : while (arg_parse( &pargs, opts))
757 : {
758 0 : if (pargs.r_opt == oDebug || pargs.r_opt == oDebugAll)
759 0 : parse_debug++;
760 0 : else if (pargs.r_opt == oOptions)
761 : { /* Yes there is one, so we do not try the default one, but
762 : read the option file when it is encountered at the
763 : commandline */
764 0 : default_config = 0;
765 : }
766 0 : else if (pargs.r_opt == oNoOptions)
767 0 : default_config = 0; /* --no-options */
768 0 : else if (pargs.r_opt == oHomedir)
769 : {
770 0 : gnupg_set_homedir (pargs.r.ret_str);
771 : }
772 : }
773 :
774 0 : socket_name = dirmngr_socket_name ();
775 0 : if (default_config)
776 0 : configname = make_filename (gnupg_homedir (), DIRMNGR_NAME".conf", NULL );
777 :
778 0 : argc = orig_argc;
779 0 : argv = orig_argv;
780 0 : pargs.argc = &argc;
781 0 : pargs.argv = &argv;
782 0 : pargs.flags= 1; /* do not remove the args */
783 : next_pass:
784 0 : if (configname)
785 : {
786 0 : configlineno = 0;
787 0 : configfp = fopen (configname, "r");
788 0 : if (!configfp)
789 : {
790 0 : if (default_config)
791 : {
792 0 : if( parse_debug )
793 0 : log_info (_("Note: no default option file '%s'\n"),
794 : configname );
795 : }
796 : else
797 : {
798 0 : log_error (_("option file '%s': %s\n"),
799 0 : configname, strerror(errno) );
800 0 : exit(2);
801 : }
802 0 : xfree (configname);
803 0 : configname = NULL;
804 : }
805 0 : if (parse_debug && configname )
806 0 : log_info (_("reading options from '%s'\n"), configname );
807 0 : default_config = 0;
808 : }
809 :
810 0 : while (optfile_parse( configfp, configname, &configlineno, &pargs, opts) )
811 : {
812 0 : if (parse_rereadable_options (&pargs, 0))
813 0 : continue; /* Already handled */
814 0 : switch (pargs.r_opt)
815 : {
816 : case aServer:
817 : case aDaemon:
818 : case aSupervised:
819 : case aShutdown:
820 : case aFlush:
821 : case aListCRLs:
822 : case aLoadCRL:
823 : case aFetchCRL:
824 : case aGPGConfList:
825 : case aGPGConfTest:
826 0 : cmd = pargs.r_opt;
827 0 : break;
828 :
829 0 : case oQuiet: opt.quiet = 1; break;
830 0 : case oVerbose: opt.verbose++; break;
831 0 : case oBatch: opt.batch=1; break;
832 :
833 0 : case oDebugWait: debug_wait = pargs.r.ret_int; break;
834 :
835 : case oOptions:
836 : /* Config files may not be nested (silently ignore them) */
837 0 : if (!configfp)
838 : {
839 0 : xfree(configname);
840 0 : configname = xstrdup(pargs.r.ret_str);
841 0 : goto next_pass;
842 : }
843 0 : break;
844 0 : case oNoGreeting: nogreeting = 1; break;
845 0 : case oNoVerbose: opt.verbose = 0; break;
846 0 : case oNoOptions: break; /* no-options */
847 0 : case oHomedir: /* Ignore this option here. */; break;
848 0 : case oNoDetach: nodetach = 1; break;
849 0 : case oLogFile: logfile = pargs.r.ret_str; break;
850 0 : case oCsh: csh_style = 1; break;
851 0 : case oSh: csh_style = 0; break;
852 : case oLDAPFile:
853 : # if USE_LDAP
854 0 : ldapfile = pargs.r.ret_str;
855 : # endif /*USE_LDAP*/
856 0 : break;
857 0 : case oLDAPAddServers: opt.add_new_ldapservers = 1; break;
858 : case oLDAPTimeout:
859 0 : opt.ldaptimeout = pargs.r.ret_int;
860 0 : break;
861 :
862 : case oFakedSystemTime:
863 0 : gnupg_set_time ((time_t)pargs.r.ret_ulong, 0);
864 0 : break;
865 :
866 0 : case oForce: opt.force = 1; break;
867 :
868 0 : case oSocketName: socket_name = pargs.r.ret_str; break;
869 :
870 0 : default : pargs.err = configfp? 1:2; break;
871 : }
872 : }
873 0 : if (configfp)
874 : {
875 0 : fclose (configfp);
876 0 : configfp = NULL;
877 : /* Keep a copy of the name so that it can be read on SIGHUP. */
878 0 : opt.config_filename = configname;
879 0 : configname = NULL;
880 0 : goto next_pass;
881 : }
882 0 : xfree (configname);
883 0 : configname = NULL;
884 0 : if (log_get_errorcount(0))
885 0 : exit(2);
886 0 : if (nogreeting )
887 0 : greeting = 0;
888 :
889 0 : if (!opt.homedir_cache)
890 0 : opt.homedir_cache = xstrdup (gnupg_homedir ());
891 :
892 0 : if (greeting)
893 : {
894 0 : es_fprintf (es_stderr, "%s %s; %s\n",
895 : strusage(11), strusage(13), strusage(14) );
896 0 : es_fprintf (es_stderr, "%s\n", strusage(15) );
897 : }
898 :
899 : #ifdef IS_DEVELOPMENT_VERSION
900 : log_info ("NOTE: this is a development version!\n");
901 : #endif
902 :
903 0 : if (opt.use_tor)
904 : {
905 0 : log_info ("WARNING: ***************************************\n");
906 0 : log_info ("WARNING: Tor mode (--use-tor) MAY NOT FULLY WORK!\n");
907 0 : log_info ("WARNING: ***************************************\n");
908 : }
909 :
910 : /* Print a warning if an argument looks like an option. */
911 0 : if (!opt.quiet && !(pargs.flags & ARGPARSE_FLAG_STOP_SEEN))
912 : {
913 : int i;
914 :
915 0 : for (i=0; i < argc; i++)
916 0 : if (argv[i][0] == '-' && argv[i][1] == '-')
917 0 : log_info (_("Note: '%s' is not considered an option\n"), argv[i]);
918 : }
919 :
920 0 : if (!access ("/etc/"DIRMNGR_NAME, F_OK)
921 0 : && !strncmp (gnupg_homedir (), "/etc/", 5))
922 0 : log_info
923 : ("NOTE: DirMngr is now a proper part of %s. The configuration and"
924 : " other directory names changed. Please check that no other version"
925 : " of dirmngr is still installed. To disable this warning, remove the"
926 : " directory '/etc/dirmngr'.\n", GNUPG_NAME);
927 :
928 0 : if (gnupg_faked_time_p ())
929 : {
930 : gnupg_isotime_t tbuf;
931 :
932 0 : log_info (_("WARNING: running with faked system time: "));
933 0 : gnupg_get_isotime (tbuf);
934 0 : dump_isotime (tbuf);
935 0 : log_printf ("\n");
936 : }
937 :
938 0 : set_debug ();
939 0 : set_tor_mode ();
940 :
941 : /* Get LDAP server list from file. */
942 : #if USE_LDAP
943 0 : if (!ldapfile)
944 : {
945 0 : ldapfile = make_filename (gnupg_homedir (),
946 : "dirmngr_ldapservers.conf",
947 : NULL);
948 0 : opt.ldapservers = parse_ldapserver_file (ldapfile);
949 0 : xfree (ldapfile);
950 : }
951 : else
952 0 : opt.ldapservers = parse_ldapserver_file (ldapfile);
953 : #endif /*USE_LDAP*/
954 :
955 : #ifndef HAVE_W32_SYSTEM
956 : /* We need to ignore the PIPE signal because the we might log to a
957 : socket and that code handles EPIPE properly. The ldap wrapper
958 : also requires us to ignore this silly signal. Assuan would set
959 : this signal to ignore anyway.*/
960 0 : signal (SIGPIPE, SIG_IGN);
961 : #endif
962 :
963 : /* Ready. Now to our duties. */
964 0 : if (!cmd)
965 0 : cmd = aServer;
966 0 : rc = 0;
967 :
968 0 : if (cmd == aServer)
969 : {
970 : /* Note that this server mode is mainly useful for debugging. */
971 0 : if (argc)
972 0 : wrong_args ("--server");
973 :
974 0 : if (logfile)
975 : {
976 0 : log_set_file (logfile);
977 0 : log_set_prefix (NULL, GPGRT_LOG_WITH_TIME | GPGRT_LOG_WITH_PID);
978 : }
979 :
980 0 : if (debug_wait)
981 : {
982 0 : log_debug ("waiting for debugger - my pid is %u .....\n",
983 0 : (unsigned int)getpid());
984 0 : gnupg_sleep (debug_wait);
985 0 : log_debug ("... okay\n");
986 : }
987 :
988 :
989 0 : thread_init ();
990 0 : cert_cache_init ();
991 0 : crl_cache_init ();
992 0 : http_register_netactivity_cb (netactivity_action);
993 0 : start_command_handler (ASSUAN_INVALID_FD);
994 0 : shutdown_reaper ();
995 : }
996 : #ifndef HAVE_W32_SYSTEM
997 0 : else if (cmd == aSupervised)
998 : {
999 : /* In supervised mode, we expect file descriptor 3 to be an
1000 : already opened, listening socket.
1001 :
1002 : We will also not detach from the controlling process or close
1003 : stderr; the supervisor should handle all of that. */
1004 : struct stat statbuf;
1005 0 : if (fstat (3, &statbuf) == -1 && errno == EBADF)
1006 : {
1007 0 : log_error ("file descriptor 3 must be validin --supervised mode\n");
1008 0 : dirmngr_exit (1);
1009 : }
1010 0 : socket_name = gnupg_get_socket_name (3);
1011 :
1012 : /* Now start with logging to a file if this is desired. */
1013 0 : if (logfile)
1014 : {
1015 0 : log_set_file (logfile);
1016 0 : log_set_prefix (NULL, (GPGRT_LOG_WITH_PREFIX
1017 : |GPGRT_LOG_WITH_TIME
1018 : |GPGRT_LOG_WITH_PID));
1019 0 : current_logfile = xstrdup (logfile);
1020 : }
1021 : else
1022 0 : log_set_prefix (NULL, 0);
1023 :
1024 0 : thread_init ();
1025 0 : cert_cache_init ();
1026 0 : crl_cache_init ();
1027 0 : http_register_netactivity_cb (netactivity_action);
1028 0 : handle_connections (3);
1029 0 : assuan_sock_close (3);
1030 0 : shutdown_reaper ();
1031 : }
1032 : #endif /*HAVE_W32_SYSTEM*/
1033 0 : else if (cmd == aDaemon)
1034 : {
1035 : assuan_fd_t fd;
1036 : pid_t pid;
1037 : int len;
1038 : struct sockaddr_un serv_addr;
1039 :
1040 0 : if (argc)
1041 0 : wrong_args ("--daemon");
1042 :
1043 : /* Now start with logging to a file if this is desired. */
1044 0 : if (logfile)
1045 : {
1046 0 : log_set_file (logfile);
1047 0 : log_set_prefix (NULL, (GPGRT_LOG_WITH_PREFIX
1048 : |GPGRT_LOG_WITH_TIME
1049 : |GPGRT_LOG_WITH_PID));
1050 0 : current_logfile = xstrdup (logfile);
1051 : }
1052 :
1053 : #ifndef HAVE_W32_SYSTEM
1054 0 : if (strchr (socket_name, ':'))
1055 : {
1056 0 : log_error (_("colons are not allowed in the socket name\n"));
1057 0 : dirmngr_exit (1);
1058 : }
1059 : #endif
1060 0 : fd = assuan_sock_new (AF_UNIX, SOCK_STREAM, 0);
1061 0 : if (fd == ASSUAN_INVALID_FD)
1062 : {
1063 0 : log_error (_("can't create socket: %s\n"), strerror (errno));
1064 0 : cleanup ();
1065 0 : dirmngr_exit (1);
1066 : }
1067 :
1068 : {
1069 : int redirected;
1070 :
1071 0 : if (assuan_sock_set_sockaddr_un (socket_name,
1072 : (struct sockaddr*)&serv_addr,
1073 : &redirected))
1074 : {
1075 0 : if (errno == ENAMETOOLONG)
1076 0 : log_error (_("socket name '%s' is too long\n"), socket_name);
1077 : else
1078 0 : log_error ("error preparing socket '%s': %s\n",
1079 : socket_name,
1080 : gpg_strerror (gpg_error_from_syserror ()));
1081 0 : dirmngr_exit (1);
1082 : }
1083 0 : if (redirected)
1084 : {
1085 0 : redir_socket_name = xstrdup (serv_addr.sun_path);
1086 0 : if (opt.verbose)
1087 0 : log_info ("redirecting socket '%s' to '%s'\n",
1088 : socket_name, redir_socket_name);
1089 : }
1090 : }
1091 :
1092 0 : len = SUN_LEN (&serv_addr);
1093 :
1094 0 : rc = assuan_sock_bind (fd, (struct sockaddr*) &serv_addr, len);
1095 0 : if (rc == -1
1096 0 : && (errno == EADDRINUSE
1097 : #ifdef HAVE_W32_SYSTEM
1098 : || errno == EEXIST
1099 : #endif
1100 : ))
1101 : {
1102 : /* Fixme: We should test whether a dirmngr is already running. */
1103 0 : gnupg_remove (redir_socket_name? redir_socket_name : socket_name);
1104 0 : rc = assuan_sock_bind (fd, (struct sockaddr*) &serv_addr, len);
1105 : }
1106 0 : if (rc != -1
1107 0 : && (rc = assuan_sock_get_nonce ((struct sockaddr*) &serv_addr, len, &socket_nonce)))
1108 0 : log_error (_("error getting nonce for the socket\n"));
1109 0 : if (rc == -1)
1110 : {
1111 0 : log_error (_("error binding socket to '%s': %s\n"),
1112 : serv_addr.sun_path,
1113 0 : gpg_strerror (gpg_error_from_errno (errno)));
1114 0 : assuan_sock_close (fd);
1115 0 : dirmngr_exit (1);
1116 : }
1117 0 : cleanup_socket = 1;
1118 :
1119 0 : if (gnupg_chmod (serv_addr.sun_path, "-rwx"))
1120 0 : log_error (_("can't set permissions of '%s': %s\n"),
1121 0 : serv_addr.sun_path, strerror (errno));
1122 :
1123 0 : if (listen (FD2INT (fd), 5) == -1)
1124 : {
1125 0 : log_error (_("listen() failed: %s\n"), strerror (errno));
1126 0 : assuan_sock_close (fd);
1127 0 : dirmngr_exit (1);
1128 : }
1129 :
1130 0 : if (opt.verbose)
1131 0 : log_info (_("listening on socket '%s'\n"), serv_addr.sun_path);
1132 :
1133 0 : es_fflush (NULL);
1134 :
1135 : /* Note: We keep the dirmngr_info output only for the sake of
1136 : existing scripts which might use this to detect a successful
1137 : start of the dirmngr. */
1138 : #ifdef HAVE_W32_SYSTEM
1139 : (void)csh_style;
1140 : (void)nodetach;
1141 :
1142 : pid = getpid ();
1143 : es_printf ("set %s=%s;%lu;1\n",
1144 : DIRMNGR_INFO_NAME, socket_name, (ulong) pid);
1145 : #else
1146 0 : pid = fork();
1147 0 : if (pid == (pid_t)-1)
1148 : {
1149 0 : log_fatal (_("error forking process: %s\n"), strerror (errno));
1150 : dirmngr_exit (1);
1151 : }
1152 :
1153 0 : if (pid)
1154 : { /* We are the parent */
1155 : char *infostr;
1156 :
1157 : /* Don't let cleanup() remove the socket - the child is
1158 : responsible for doing that. */
1159 0 : cleanup_socket = 0;
1160 :
1161 0 : close (fd);
1162 :
1163 : /* Create the info string: <name>:<pid>:<protocol_version> */
1164 0 : if (asprintf (&infostr, "%s=%s:%lu:1",
1165 : DIRMNGR_INFO_NAME, serv_addr.sun_path, (ulong)pid ) < 0)
1166 : {
1167 0 : log_error (_("out of core\n"));
1168 0 : kill (pid, SIGTERM);
1169 0 : dirmngr_exit (1);
1170 : }
1171 : /* Print the environment string, so that the caller can use
1172 : shell's eval to set it. But see above. */
1173 0 : if (csh_style)
1174 : {
1175 0 : *strchr (infostr, '=') = ' ';
1176 0 : es_printf ( "setenv %s;\n", infostr);
1177 : }
1178 : else
1179 : {
1180 0 : es_printf ( "%s; export %s;\n", infostr, DIRMNGR_INFO_NAME);
1181 : }
1182 0 : free (infostr);
1183 0 : exit (0);
1184 : /*NEVER REACHED*/
1185 : } /* end parent */
1186 :
1187 :
1188 : /*
1189 : This is the child
1190 : */
1191 :
1192 : /* Detach from tty and put process into a new session */
1193 0 : if (!nodetach )
1194 : {
1195 : int i;
1196 : unsigned int oldflags;
1197 :
1198 : /* Close stdin, stdout and stderr unless it is the log stream */
1199 0 : for (i=0; i <= 2; i++)
1200 : {
1201 0 : if (!log_test_fd (i) && i != fd )
1202 : {
1203 0 : if ( !close (i)
1204 0 : && open ("/dev/null", i? O_WRONLY : O_RDONLY) == -1)
1205 : {
1206 0 : log_error ("failed to open '%s': %s\n",
1207 0 : "/dev/null", strerror (errno));
1208 0 : cleanup ();
1209 0 : dirmngr_exit (1);
1210 : }
1211 : }
1212 : }
1213 :
1214 0 : if (setsid() == -1)
1215 : {
1216 0 : log_error ("setsid() failed: %s\n", strerror(errno) );
1217 0 : dirmngr_exit (1);
1218 : }
1219 :
1220 0 : log_get_prefix (&oldflags);
1221 0 : log_set_prefix (NULL, oldflags | GPGRT_LOG_RUN_DETACHED);
1222 0 : opt.running_detached = 1;
1223 :
1224 0 : if (chdir("/"))
1225 : {
1226 0 : log_error ("chdir to / failed: %s\n", strerror (errno));
1227 0 : dirmngr_exit (1);
1228 : }
1229 : }
1230 : #endif
1231 :
1232 0 : thread_init ();
1233 0 : cert_cache_init ();
1234 0 : crl_cache_init ();
1235 0 : http_register_netactivity_cb (netactivity_action);
1236 0 : handle_connections (fd);
1237 0 : assuan_sock_close (fd);
1238 0 : shutdown_reaper ();
1239 : }
1240 0 : else if (cmd == aListCRLs)
1241 : {
1242 : /* Just list the CRL cache and exit. */
1243 0 : if (argc)
1244 0 : wrong_args ("--list-crls");
1245 0 : crl_cache_init ();
1246 0 : crl_cache_list (es_stdout);
1247 : }
1248 0 : else if (cmd == aLoadCRL)
1249 : {
1250 : struct server_control_s ctrlbuf;
1251 :
1252 0 : memset (&ctrlbuf, 0, sizeof ctrlbuf);
1253 0 : dirmngr_init_default_ctrl (&ctrlbuf);
1254 :
1255 0 : thread_init ();
1256 0 : cert_cache_init ();
1257 0 : crl_cache_init ();
1258 0 : if (!argc)
1259 0 : rc = crl_cache_load (&ctrlbuf, NULL);
1260 : else
1261 : {
1262 0 : for (; !rc && argc; argc--, argv++)
1263 0 : rc = crl_cache_load (&ctrlbuf, *argv);
1264 : }
1265 0 : dirmngr_deinit_default_ctrl (&ctrlbuf);
1266 : }
1267 0 : else if (cmd == aFetchCRL)
1268 : {
1269 : ksba_reader_t reader;
1270 : struct server_control_s ctrlbuf;
1271 :
1272 0 : if (argc != 1)
1273 0 : wrong_args ("--fetch-crl URL");
1274 :
1275 0 : memset (&ctrlbuf, 0, sizeof ctrlbuf);
1276 0 : dirmngr_init_default_ctrl (&ctrlbuf);
1277 :
1278 0 : thread_init ();
1279 0 : cert_cache_init ();
1280 0 : crl_cache_init ();
1281 0 : rc = crl_fetch (&ctrlbuf, argv[0], &reader);
1282 0 : if (rc)
1283 0 : log_error (_("fetching CRL from '%s' failed: %s\n"),
1284 : argv[0], gpg_strerror (rc));
1285 : else
1286 : {
1287 0 : rc = crl_cache_insert (&ctrlbuf, argv[0], reader);
1288 0 : if (rc)
1289 0 : log_error (_("processing CRL from '%s' failed: %s\n"),
1290 : argv[0], gpg_strerror (rc));
1291 0 : crl_close_reader (reader);
1292 : }
1293 0 : dirmngr_deinit_default_ctrl (&ctrlbuf);
1294 : }
1295 0 : else if (cmd == aFlush)
1296 : {
1297 : /* Delete cache and exit. */
1298 0 : if (argc)
1299 0 : wrong_args ("--flush");
1300 0 : rc = crl_cache_flush();
1301 : }
1302 0 : else if (cmd == aGPGConfTest)
1303 0 : dirmngr_exit (0);
1304 0 : else if (cmd == aGPGConfList)
1305 : {
1306 0 : unsigned long flags = 0;
1307 : char *filename;
1308 : char *filename_esc;
1309 :
1310 : /* First the configuration file. This is not an option, but it
1311 : is vital information for GPG Conf. */
1312 0 : if (!opt.config_filename)
1313 0 : opt.config_filename = make_filename (gnupg_homedir (),
1314 : "dirmngr.conf", NULL );
1315 :
1316 0 : filename = percent_escape (opt.config_filename, NULL);
1317 0 : es_printf ("gpgconf-dirmngr.conf:%lu:\"%s\n",
1318 : GC_OPT_FLAG_DEFAULT, filename);
1319 0 : xfree (filename);
1320 :
1321 0 : es_printf ("verbose:%lu:\n", flags | GC_OPT_FLAG_NONE);
1322 0 : es_printf ("quiet:%lu:\n", flags | GC_OPT_FLAG_NONE);
1323 0 : es_printf ("debug-level:%lu:\"none\n", flags | GC_OPT_FLAG_DEFAULT);
1324 0 : es_printf ("log-file:%lu:\n", flags | GC_OPT_FLAG_NONE);
1325 0 : es_printf ("force:%lu:\n", flags | GC_OPT_FLAG_NONE);
1326 :
1327 : /* --csh and --sh are mutually exclusive, something we can not
1328 : express in GPG Conf. --options is only usable from the
1329 : command line, really. --debug-all interacts with --debug,
1330 : and having both of them is thus problematic. --no-detach is
1331 : also only usable on the command line. --batch is unused. */
1332 :
1333 0 : filename = make_filename (gnupg_homedir (),
1334 : "dirmngr_ldapservers.conf",
1335 : NULL);
1336 0 : filename_esc = percent_escape (filename, NULL);
1337 0 : es_printf ("ldapserverlist-file:%lu:\"%s\n", flags | GC_OPT_FLAG_DEFAULT,
1338 : filename_esc);
1339 0 : xfree (filename_esc);
1340 0 : xfree (filename);
1341 :
1342 0 : es_printf ("ldaptimeout:%lu:%u\n",
1343 : flags | GC_OPT_FLAG_DEFAULT, DEFAULT_LDAP_TIMEOUT);
1344 0 : es_printf ("max-replies:%lu:%u\n",
1345 : flags | GC_OPT_FLAG_DEFAULT, DEFAULT_MAX_REPLIES);
1346 0 : es_printf ("allow-ocsp:%lu:\n", flags | GC_OPT_FLAG_NONE);
1347 0 : es_printf ("allow-version-check:%lu:\n", flags | GC_OPT_FLAG_NONE);
1348 0 : es_printf ("ocsp-responder:%lu:\n", flags | GC_OPT_FLAG_NONE);
1349 0 : es_printf ("ocsp-signer:%lu:\n", flags | GC_OPT_FLAG_NONE);
1350 :
1351 0 : es_printf ("faked-system-time:%lu:\n", flags | GC_OPT_FLAG_NONE);
1352 0 : es_printf ("no-greeting:%lu:\n", flags | GC_OPT_FLAG_NONE);
1353 :
1354 0 : es_printf ("disable-http:%lu:\n", flags | GC_OPT_FLAG_NONE);
1355 0 : es_printf ("disable-ldap:%lu:\n", flags | GC_OPT_FLAG_NONE);
1356 0 : es_printf ("honor-http-proxy:%lu\n", flags | GC_OPT_FLAG_NONE);
1357 0 : es_printf ("http-proxy:%lu:\n", flags | GC_OPT_FLAG_NONE);
1358 0 : es_printf ("ldap-proxy:%lu:\n", flags | GC_OPT_FLAG_NONE);
1359 0 : es_printf ("only-ldap-proxy:%lu:\n", flags | GC_OPT_FLAG_NONE);
1360 0 : es_printf ("ignore-ldap-dp:%lu:\n", flags | GC_OPT_FLAG_NONE);
1361 0 : es_printf ("ignore-http-dp:%lu:\n", flags | GC_OPT_FLAG_NONE);
1362 0 : es_printf ("ignore-ocsp-service-url:%lu:\n", flags | GC_OPT_FLAG_NONE);
1363 : /* Note: The next one is to fix a typo in gpgconf - should be
1364 : removed eventually. */
1365 0 : es_printf ("ignore-ocsp-servic-url:%lu:\n", flags | GC_OPT_FLAG_NONE);
1366 :
1367 0 : es_printf ("use-tor:%lu:\n", flags | GC_OPT_FLAG_NONE);
1368 0 : es_printf ("keyserver:%lu:\n", flags | GC_OPT_FLAG_NONE);
1369 : }
1370 0 : cleanup ();
1371 0 : return !!rc;
1372 : }
1373 :
1374 :
1375 : static void
1376 0 : cleanup (void)
1377 : {
1378 0 : crl_cache_deinit ();
1379 0 : cert_cache_deinit (1);
1380 :
1381 : #if USE_LDAP
1382 0 : ldapserver_list_free (opt.ldapservers);
1383 : #endif /*USE_LDAP*/
1384 0 : opt.ldapservers = NULL;
1385 :
1386 0 : if (cleanup_socket)
1387 : {
1388 0 : cleanup_socket = 0;
1389 0 : if (redir_socket_name)
1390 0 : gnupg_remove (redir_socket_name);
1391 0 : else if (socket_name && *socket_name)
1392 0 : gnupg_remove (socket_name);
1393 : }
1394 0 : }
1395 :
1396 :
1397 : void
1398 0 : dirmngr_exit (int rc)
1399 : {
1400 0 : cleanup ();
1401 0 : exit (rc);
1402 : }
1403 :
1404 :
1405 : void
1406 0 : dirmngr_init_default_ctrl (ctrl_t ctrl)
1407 : {
1408 0 : if (opt.http_proxy)
1409 0 : ctrl->http_proxy = xstrdup (opt.http_proxy);
1410 0 : }
1411 :
1412 :
1413 : void
1414 0 : dirmngr_deinit_default_ctrl (ctrl_t ctrl)
1415 : {
1416 0 : if (!ctrl)
1417 0 : return;
1418 0 : xfree (ctrl->http_proxy);
1419 0 : ctrl->http_proxy = NULL;
1420 : }
1421 :
1422 :
1423 : /* Create a list of LDAP servers from the file FILENAME. Returns the
1424 : list or NULL in case of errors.
1425 :
1426 : The format fo such a file is line oriented where empty lines and
1427 : lines starting with a hash mark are ignored. All other lines are
1428 : assumed to be colon seprated with these fields:
1429 :
1430 : 1. field: Hostname
1431 : 2. field: Portnumber
1432 : 3. field: Username
1433 : 4. field: Password
1434 : 5. field: Base DN
1435 :
1436 : */
1437 : #if USE_LDAP
1438 : static ldap_server_t
1439 0 : parse_ldapserver_file (const char* filename)
1440 : {
1441 : char buffer[1024];
1442 : char *p;
1443 : ldap_server_t server, serverstart, *serverend;
1444 : int c;
1445 0 : unsigned int lineno = 0;
1446 : estream_t fp;
1447 :
1448 0 : fp = es_fopen (filename, "r");
1449 0 : if (!fp)
1450 : {
1451 0 : log_error (_("error opening '%s': %s\n"), filename, strerror (errno));
1452 0 : return NULL;
1453 : }
1454 :
1455 0 : serverstart = NULL;
1456 0 : serverend = &serverstart;
1457 0 : while (es_fgets (buffer, sizeof buffer, fp))
1458 : {
1459 0 : lineno++;
1460 0 : if (!*buffer || buffer[strlen(buffer)-1] != '\n')
1461 : {
1462 0 : if (*buffer && es_feof (fp))
1463 : ; /* Last line not terminated - continue. */
1464 : else
1465 : {
1466 0 : log_error (_("%s:%u: line too long - skipped\n"),
1467 : filename, lineno);
1468 0 : while ( (c=es_fgetc (fp)) != EOF && c != '\n')
1469 : ; /* Skip until end of line. */
1470 0 : continue;
1471 : }
1472 : }
1473 : /* Skip empty and comment lines.*/
1474 0 : for (p=buffer; spacep (p); p++)
1475 : ;
1476 0 : if (!*p || *p == '\n' || *p == '#')
1477 0 : continue;
1478 :
1479 : /* Parse the colon separated fields. */
1480 0 : server = ldapserver_parse_one (buffer, filename, lineno);
1481 0 : if (server)
1482 : {
1483 0 : *serverend = server;
1484 0 : serverend = &server->next;
1485 : }
1486 : }
1487 :
1488 0 : if (es_ferror (fp))
1489 0 : log_error (_("error reading '%s': %s\n"), filename, strerror (errno));
1490 0 : es_fclose (fp);
1491 :
1492 0 : return serverstart;
1493 : }
1494 : #endif /*USE_LDAP*/
1495 :
1496 : static fingerprint_list_t
1497 0 : parse_ocsp_signer (const char *string)
1498 : {
1499 : gpg_error_t err;
1500 : char *fname;
1501 : estream_t fp;
1502 : char line[256];
1503 : char *p;
1504 : fingerprint_list_t list, *list_tail, item;
1505 0 : unsigned int lnr = 0;
1506 : int c, i, j;
1507 0 : int errflag = 0;
1508 :
1509 :
1510 : /* Check whether this is not a filename and treat it as a direct
1511 : fingerprint specification. */
1512 0 : if (!strpbrk (string, "/.~\\"))
1513 : {
1514 0 : item = xcalloc (1, sizeof *item);
1515 0 : for (i=j=0; (string[i] == ':' || hexdigitp (string+i)) && j < 40; i++)
1516 0 : if ( string[i] != ':' )
1517 0 : item->hexfpr[j++] = string[i] >= 'a'? (string[i] & 0xdf): string[i];
1518 0 : item->hexfpr[j] = 0;
1519 0 : if (j != 40 || !(spacep (string+i) || !string[i]))
1520 : {
1521 0 : log_error (_("%s:%u: invalid fingerprint detected\n"),
1522 : "--ocsp-signer", 0);
1523 0 : xfree (item);
1524 0 : return NULL;
1525 : }
1526 0 : return item;
1527 : }
1528 :
1529 : /* Well, it is a filename. */
1530 0 : if (*string == '/' || (*string == '~' && string[1] == '/'))
1531 0 : fname = make_filename (string, NULL);
1532 : else
1533 : {
1534 0 : if (string[0] == '.' && string[1] == '/' )
1535 0 : string += 2;
1536 0 : fname = make_filename (gnupg_homedir (), string, NULL);
1537 : }
1538 :
1539 0 : fp = es_fopen (fname, "r");
1540 0 : if (!fp)
1541 : {
1542 0 : err = gpg_error_from_syserror ();
1543 0 : log_error (_("can't open '%s': %s\n"), fname, gpg_strerror (err));
1544 0 : xfree (fname);
1545 0 : return NULL;
1546 : }
1547 :
1548 0 : list = NULL;
1549 0 : list_tail = &list;
1550 : for (;;)
1551 : {
1552 0 : if (!es_fgets (line, DIM(line)-1, fp) )
1553 : {
1554 0 : if (!es_feof (fp))
1555 : {
1556 0 : err = gpg_error_from_syserror ();
1557 0 : log_error (_("%s:%u: read error: %s\n"),
1558 : fname, lnr, gpg_strerror (err));
1559 0 : errflag = 1;
1560 : }
1561 0 : es_fclose (fp);
1562 0 : if (errflag)
1563 : {
1564 0 : while (list)
1565 : {
1566 0 : fingerprint_list_t tmp = list->next;
1567 0 : xfree (list);
1568 0 : list = tmp;
1569 : }
1570 : }
1571 0 : xfree (fname);
1572 0 : return list; /* Ready. */
1573 : }
1574 :
1575 0 : lnr++;
1576 0 : if (!*line || line[strlen(line)-1] != '\n')
1577 : {
1578 : /* Eat until end of line. */
1579 0 : while ( (c=es_getc (fp)) != EOF && c != '\n')
1580 : ;
1581 0 : err = gpg_error (*line? GPG_ERR_LINE_TOO_LONG
1582 : /* */: GPG_ERR_INCOMPLETE_LINE);
1583 0 : log_error (_("%s:%u: read error: %s\n"),
1584 : fname, lnr, gpg_strerror (err));
1585 0 : errflag = 1;
1586 0 : continue;
1587 : }
1588 :
1589 : /* Allow for empty lines and spaces */
1590 0 : for (p=line; spacep (p); p++)
1591 : ;
1592 0 : if (!*p || *p == '\n' || *p == '#')
1593 0 : continue;
1594 :
1595 0 : item = xcalloc (1, sizeof *item);
1596 0 : *list_tail = item;
1597 0 : list_tail = &item->next;
1598 :
1599 0 : for (i=j=0; (p[i] == ':' || hexdigitp (p+i)) && j < 40; i++)
1600 0 : if ( p[i] != ':' )
1601 0 : item->hexfpr[j++] = p[i] >= 'a'? (p[i] & 0xdf): p[i];
1602 0 : item->hexfpr[j] = 0;
1603 0 : if (j != 40 || !(spacep (p+i) || p[i] == '\n'))
1604 : {
1605 0 : log_error (_("%s:%u: invalid fingerprint detected\n"), fname, lnr);
1606 0 : errflag = 1;
1607 : }
1608 0 : i++;
1609 0 : while (spacep (p+i))
1610 0 : i++;
1611 0 : if (p[i] && p[i] != '\n')
1612 0 : log_info (_("%s:%u: garbage at end of line ignored\n"), fname, lnr);
1613 0 : }
1614 : /*NOTREACHED*/
1615 : }
1616 :
1617 :
1618 :
1619 :
1620 : /*
1621 : Stuff used in daemon mode.
1622 : */
1623 :
1624 :
1625 :
1626 : /* Reread parts of the configuration. Note, that this function is
1627 : obviously not thread-safe and should only be called from the NPTH
1628 : signal handler.
1629 :
1630 : Fixme: Due to the way the argument parsing works, we create a
1631 : memory leak here for all string type arguments. There is currently
1632 : no clean way to tell whether the memory for the argument has been
1633 : allocated or points into the process' original arguments. Unless
1634 : we have a mechanism to tell this, we need to live on with this. */
1635 : static void
1636 0 : reread_configuration (void)
1637 : {
1638 : ARGPARSE_ARGS pargs;
1639 : FILE *fp;
1640 0 : unsigned int configlineno = 0;
1641 : int dummy;
1642 :
1643 0 : if (!opt.config_filename)
1644 0 : return; /* No config file. */
1645 :
1646 0 : fp = fopen (opt.config_filename, "r");
1647 0 : if (!fp)
1648 : {
1649 0 : log_error (_("option file '%s': %s\n"),
1650 0 : opt.config_filename, strerror(errno) );
1651 0 : return;
1652 : }
1653 :
1654 0 : parse_rereadable_options (NULL, 1); /* Start from the default values. */
1655 :
1656 0 : memset (&pargs, 0, sizeof pargs);
1657 0 : dummy = 0;
1658 0 : pargs.argc = &dummy;
1659 0 : pargs.flags = 1; /* do not remove the args */
1660 0 : while (optfile_parse (fp, opt.config_filename, &configlineno, &pargs, opts) )
1661 : {
1662 0 : if (pargs.r_opt < -1)
1663 0 : pargs.err = 1; /* Print a warning. */
1664 : else /* Try to parse this option - ignore unchangeable ones. */
1665 0 : parse_rereadable_options (&pargs, 1);
1666 : }
1667 0 : fclose (fp);
1668 :
1669 0 : set_debug ();
1670 0 : set_tor_mode ();
1671 : }
1672 :
1673 :
1674 : /* A global function which allows us to trigger the reload stuff from
1675 : other places. */
1676 : void
1677 0 : dirmngr_sighup_action (void)
1678 : {
1679 0 : log_info (_("SIGHUP received - "
1680 : "re-reading configuration and flushing caches\n"));
1681 0 : reread_configuration ();
1682 0 : cert_cache_deinit (0);
1683 0 : crl_cache_deinit ();
1684 0 : cert_cache_init ();
1685 0 : crl_cache_init ();
1686 0 : }
1687 :
1688 :
1689 : /* This function is called if some network activity was done. At this
1690 : * point we know the we have a network and we can decide whether to
1691 : * run scheduled background tasks soon. The function should return
1692 : * quickly and only trigger actions for another thread. */
1693 : static void
1694 0 : netactivity_action (void)
1695 : {
1696 0 : network_activity_seen = 1;
1697 0 : }
1698 :
1699 :
1700 : /* The signal handler. */
1701 : #ifndef HAVE_W32_SYSTEM
1702 : static void
1703 0 : handle_signal (int signo)
1704 : {
1705 0 : switch (signo)
1706 : {
1707 : case SIGHUP:
1708 0 : dirmngr_sighup_action ();
1709 0 : break;
1710 :
1711 : case SIGUSR1:
1712 0 : cert_cache_print_stats ();
1713 0 : break;
1714 :
1715 : case SIGUSR2:
1716 0 : log_info (_("SIGUSR2 received - no action defined\n"));
1717 0 : break;
1718 :
1719 : case SIGTERM:
1720 0 : if (!shutdown_pending)
1721 0 : log_info (_("SIGTERM received - shutting down ...\n"));
1722 : else
1723 0 : log_info (_("SIGTERM received - still %d active connections\n"),
1724 : active_connections);
1725 0 : shutdown_pending++;
1726 0 : if (shutdown_pending > 2)
1727 : {
1728 0 : log_info (_("shutdown forced\n"));
1729 0 : log_info ("%s %s stopped\n", strusage(11), strusage(13) );
1730 0 : cleanup ();
1731 0 : dirmngr_exit (0);
1732 : }
1733 0 : break;
1734 :
1735 : case SIGINT:
1736 0 : log_info (_("SIGINT received - immediate shutdown\n"));
1737 0 : log_info( "%s %s stopped\n", strusage(11), strusage(13));
1738 0 : cleanup ();
1739 0 : dirmngr_exit (0);
1740 0 : break;
1741 :
1742 : default:
1743 0 : log_info (_("signal %d received - no action defined\n"), signo);
1744 : }
1745 0 : }
1746 : #endif /*!HAVE_W32_SYSTEM*/
1747 :
1748 :
1749 : /* Thread to do the housekeeping. */
1750 : static void *
1751 0 : housekeeping_thread (void *arg)
1752 : {
1753 : static int sentinel;
1754 : time_t curtime;
1755 : struct server_control_s ctrlbuf;
1756 :
1757 : (void)arg;
1758 :
1759 0 : curtime = gnupg_get_time ();
1760 0 : if (sentinel)
1761 : {
1762 0 : log_info ("housekeeping is already going on\n");
1763 0 : return NULL;
1764 : }
1765 0 : sentinel++;
1766 0 : if (opt.verbose > 1)
1767 0 : log_info ("starting housekeeping\n");
1768 :
1769 0 : memset (&ctrlbuf, 0, sizeof ctrlbuf);
1770 0 : dirmngr_init_default_ctrl (&ctrlbuf);
1771 :
1772 0 : ks_hkp_housekeeping (curtime);
1773 0 : if (network_activity_seen)
1774 : {
1775 0 : network_activity_seen = 0;
1776 0 : if (opt.use_tor || opt.allow_version_check)
1777 0 : dirmngr_load_swdb (&ctrlbuf, 0);
1778 : }
1779 :
1780 0 : dirmngr_deinit_default_ctrl (&ctrlbuf);
1781 :
1782 0 : if (opt.verbose > 1)
1783 0 : log_info ("ready with housekeeping\n");
1784 0 : sentinel--;
1785 0 : return NULL;
1786 :
1787 : }
1788 :
1789 :
1790 : #if GPGRT_GCC_HAVE_PUSH_PRAGMA
1791 : # pragma GCC push_options
1792 : # pragma GCC optimize ("no-strict-overflow")
1793 : #endif
1794 : static int
1795 0 : time_for_housekeeping_p (time_t curtime)
1796 : {
1797 : static time_t last_housekeeping;
1798 :
1799 0 : if (!last_housekeeping)
1800 0 : last_housekeeping = curtime;
1801 :
1802 0 : if (last_housekeeping + HOUSEKEEPING_INTERVAL <= curtime
1803 0 : || last_housekeeping > curtime /*(be prepared for y2038)*/)
1804 : {
1805 0 : last_housekeeping = curtime;
1806 0 : return 1;
1807 : }
1808 0 : return 0;
1809 : }
1810 : #if GPGRT_GCC_HAVE_PUSH_PRAGMA
1811 : # pragma GCC pop_options
1812 : #endif
1813 :
1814 :
1815 : /* This is the worker for the ticker. It is called every few seconds
1816 : and may only do fast operations. */
1817 : static void
1818 0 : handle_tick (void)
1819 : {
1820 0 : if (time_for_housekeeping_p (gnupg_get_time ()))
1821 : {
1822 : npth_t thread;
1823 : npth_attr_t tattr;
1824 : int err;
1825 :
1826 0 : err = npth_attr_init (&tattr);
1827 0 : if (err)
1828 0 : log_error ("error preparing housekeeping thread: %s\n", strerror (err));
1829 : else
1830 : {
1831 0 : npth_attr_setdetachstate (&tattr, NPTH_CREATE_DETACHED);
1832 0 : err = npth_create (&thread, &tattr, housekeeping_thread, NULL);
1833 0 : if (err)
1834 0 : log_error ("error spawning housekeeping thread: %s\n",
1835 : strerror (err));
1836 0 : npth_attr_destroy (&tattr);
1837 : }
1838 : }
1839 0 : }
1840 :
1841 :
1842 : /* Check the nonce on a new connection. This is a NOP unless we are
1843 : using our Unix domain socket emulation under Windows. */
1844 : static int
1845 0 : check_nonce (assuan_fd_t fd, assuan_sock_nonce_t *nonce)
1846 : {
1847 0 : if (assuan_sock_check_nonce (fd, nonce))
1848 : {
1849 0 : log_info (_("error reading nonce on fd %d: %s\n"),
1850 0 : FD2INT (fd), strerror (errno));
1851 0 : assuan_sock_close (fd);
1852 0 : return -1;
1853 : }
1854 : else
1855 0 : return 0;
1856 : }
1857 :
1858 :
1859 : /* Helper to call a connection's main function. */
1860 : static void *
1861 0 : start_connection_thread (void *arg)
1862 : {
1863 : union int_and_ptr_u argval;
1864 : gnupg_fd_t fd;
1865 :
1866 0 : memset (&argval, 0, sizeof argval);
1867 0 : argval.aptr = arg;
1868 0 : fd = argval.afd;
1869 :
1870 0 : if (check_nonce (fd, &socket_nonce))
1871 : {
1872 0 : log_error ("handler nonce check FAILED\n");
1873 0 : return NULL;
1874 : }
1875 :
1876 : #ifndef HAVE_W32_SYSTEM
1877 0 : npth_setspecific (my_tlskey_current_fd, argval.aptr);
1878 : #endif
1879 :
1880 0 : active_connections++;
1881 0 : if (opt.verbose)
1882 0 : log_info (_("handler for fd %d started\n"), FD2INT (fd));
1883 :
1884 0 : start_command_handler (fd);
1885 :
1886 0 : if (opt.verbose)
1887 0 : log_info (_("handler for fd %d terminated\n"), FD2INT (fd));
1888 0 : active_connections--;
1889 :
1890 : #ifndef HAVE_W32_SYSTEM
1891 0 : argval.afd = ASSUAN_INVALID_FD;
1892 0 : npth_setspecific (my_tlskey_current_fd, argval.aptr);
1893 : #endif
1894 :
1895 0 : return NULL;
1896 : }
1897 :
1898 :
1899 : #ifdef HAVE_INOTIFY_INIT
1900 : /* Read an inotify event and return true if it matches NAME. */
1901 : static int
1902 0 : my_inotify_is_name (int fd, const char *name)
1903 : {
1904 : union {
1905 : struct inotify_event ev;
1906 : char _buf[sizeof (struct inotify_event) + 100 + 1];
1907 : } buf;
1908 : int n;
1909 : const char *s;
1910 :
1911 0 : s = strrchr (name, '/');
1912 0 : if (s && s[1])
1913 0 : name = s + 1;
1914 :
1915 0 : n = npth_read (fd, &buf, sizeof buf);
1916 0 : if (n < sizeof (struct inotify_event))
1917 0 : return 0;
1918 0 : if (buf.ev.len < strlen (name)+1)
1919 0 : return 0;
1920 0 : if (strcmp (buf.ev.name, name))
1921 0 : return 0; /* Not the desired file. */
1922 :
1923 0 : return 1; /* Found. */
1924 : }
1925 : #endif /*HAVE_INOTIFY_INIT*/
1926 :
1927 :
1928 : /* Main loop in daemon mode. */
1929 : static void
1930 0 : handle_connections (assuan_fd_t listen_fd)
1931 : {
1932 : npth_attr_t tattr;
1933 : #ifndef HAVE_W32_SYSTEM
1934 : int signo;
1935 : #endif
1936 : struct sockaddr_un paddr;
1937 0 : socklen_t plen = sizeof( paddr );
1938 : gnupg_fd_t fd;
1939 : int nfd, ret;
1940 : fd_set fdset, read_fdset;
1941 : struct timespec abstime;
1942 : struct timespec curtime;
1943 : struct timespec timeout;
1944 : int saved_errno;
1945 : #ifdef HAVE_INOTIFY_INIT
1946 : int my_inotify_fd;
1947 : #endif /*HAVE_INOTIFY_INIT*/
1948 :
1949 0 : npth_attr_init (&tattr);
1950 0 : npth_attr_setdetachstate (&tattr, NPTH_CREATE_DETACHED);
1951 :
1952 : #ifndef HAVE_W32_SYSTEM /* FIXME */
1953 0 : npth_sigev_init ();
1954 0 : npth_sigev_add (SIGHUP);
1955 0 : npth_sigev_add (SIGUSR1);
1956 0 : npth_sigev_add (SIGUSR2);
1957 0 : npth_sigev_add (SIGINT);
1958 0 : npth_sigev_add (SIGTERM);
1959 0 : npth_sigev_fini ();
1960 : #endif
1961 :
1962 : #ifdef HAVE_INOTIFY_INIT
1963 0 : if (disable_check_own_socket)
1964 0 : my_inotify_fd = -1;
1965 0 : else if ((my_inotify_fd = inotify_init ()) == -1)
1966 0 : log_info ("error enabling fast daemon termination: %s\n",
1967 0 : strerror (errno));
1968 : else
1969 : {
1970 : /* We need to watch the directory for the file because there
1971 : * won't be an IN_DELETE_SELF for a socket file. */
1972 0 : char *slash = strrchr (socket_name, '/');
1973 0 : log_assert (slash && slash[1]);
1974 0 : *slash = 0;
1975 0 : if (inotify_add_watch (my_inotify_fd, socket_name, IN_DELETE) == -1)
1976 : {
1977 0 : close (my_inotify_fd);
1978 0 : my_inotify_fd = -1;
1979 : }
1980 0 : *slash = '/';
1981 : }
1982 : #endif /*HAVE_INOTIFY_INIT*/
1983 :
1984 :
1985 : /* Setup the fdset. It has only one member. This is because we use
1986 : pth_select instead of pth_accept to properly sync timeouts with
1987 : to full second. */
1988 0 : FD_ZERO (&fdset);
1989 0 : FD_SET (FD2INT (listen_fd), &fdset);
1990 0 : nfd = FD2INT (listen_fd);
1991 : #ifdef HAVE_INOTIFY_INIT
1992 0 : if (my_inotify_fd != -1)
1993 : {
1994 0 : FD_SET (my_inotify_fd, &fdset);
1995 0 : if (my_inotify_fd > nfd)
1996 0 : nfd = my_inotify_fd;
1997 : }
1998 : #endif /*HAVE_INOTIFY_INIT*/
1999 :
2000 0 : npth_clock_gettime (&abstime);
2001 0 : abstime.tv_sec += TIMERTICK_INTERVAL;
2002 :
2003 : /* Main loop. */
2004 : for (;;)
2005 : {
2006 : /* Shutdown test. */
2007 0 : if (shutdown_pending)
2008 : {
2009 0 : if (!active_connections)
2010 0 : break; /* ready */
2011 :
2012 : /* Do not accept new connections but keep on running the
2013 : loop to cope with the timer events. */
2014 0 : FD_ZERO (&fdset);
2015 : }
2016 :
2017 : /* Take a copy of the fdset. */
2018 0 : read_fdset = fdset;
2019 :
2020 0 : npth_clock_gettime (&curtime);
2021 0 : if (!(npth_timercmp (&curtime, &abstime, <)))
2022 : {
2023 : /* Timeout. */
2024 0 : handle_tick ();
2025 0 : npth_clock_gettime (&abstime);
2026 0 : abstime.tv_sec += TIMERTICK_INTERVAL;
2027 : }
2028 0 : npth_timersub (&abstime, &curtime, &timeout);
2029 :
2030 : #ifndef HAVE_W32_SYSTEM
2031 0 : ret = npth_pselect (nfd+1, &read_fdset, NULL, NULL, &timeout, npth_sigev_sigmask());
2032 0 : saved_errno = errno;
2033 :
2034 0 : while (npth_sigev_get_pending(&signo))
2035 0 : handle_signal (signo);
2036 : #else
2037 : ret = npth_eselect (nfd+1, &read_fdset, NULL, NULL, &timeout, NULL, NULL);
2038 : saved_errno = errno;
2039 : #endif
2040 :
2041 0 : if (ret == -1 && saved_errno != EINTR)
2042 : {
2043 0 : log_error (_("npth_pselect failed: %s - waiting 1s\n"),
2044 : strerror (saved_errno));
2045 0 : npth_sleep (1);
2046 0 : continue;
2047 : }
2048 :
2049 0 : if (ret <= 0)
2050 : {
2051 : /* Interrupt or timeout. Will be handled when calculating the
2052 : next timeout. */
2053 0 : continue;
2054 : }
2055 :
2056 0 : if (shutdown_pending)
2057 : {
2058 : /* Do not anymore accept connections. */
2059 0 : continue;
2060 : }
2061 :
2062 : #ifdef HAVE_INOTIFY_INIT
2063 0 : if (my_inotify_fd != -1 && FD_ISSET (my_inotify_fd, &read_fdset)
2064 0 : && my_inotify_is_name (my_inotify_fd, socket_name))
2065 : {
2066 0 : shutdown_pending = 1;
2067 0 : log_info ("socket file has been removed - shutting down\n");
2068 : }
2069 : #endif /*HAVE_INOTIFY_INIT*/
2070 :
2071 0 : if (FD_ISSET (FD2INT (listen_fd), &read_fdset))
2072 : {
2073 0 : plen = sizeof paddr;
2074 0 : fd = INT2FD (npth_accept (FD2INT(listen_fd),
2075 : (struct sockaddr *)&paddr, &plen));
2076 0 : if (fd == GNUPG_INVALID_FD)
2077 : {
2078 0 : log_error ("accept failed: %s\n", strerror (errno));
2079 : }
2080 : else
2081 : {
2082 : char threadname[50];
2083 : union int_and_ptr_u argval;
2084 : npth_t thread;
2085 :
2086 0 : memset (&argval, 0, sizeof argval);
2087 0 : argval.afd = fd;
2088 0 : snprintf (threadname, sizeof threadname,
2089 : "conn fd=%d", FD2INT(fd));
2090 :
2091 0 : ret = npth_create (&thread, &tattr,
2092 : start_connection_thread, argval.aptr);
2093 0 : if (ret)
2094 : {
2095 0 : log_error ("error spawning connection handler: %s\n",
2096 : strerror (ret) );
2097 0 : assuan_sock_close (fd);
2098 : }
2099 0 : npth_setname_np (thread, threadname);
2100 : }
2101 0 : fd = GNUPG_INVALID_FD;
2102 : }
2103 0 : }
2104 :
2105 : #ifdef HAVE_INOTIFY_INIT
2106 0 : if (my_inotify_fd != -1)
2107 0 : close (my_inotify_fd);
2108 : #endif /*HAVE_INOTIFY_INIT*/
2109 0 : npth_attr_destroy (&tattr);
2110 0 : cleanup ();
2111 0 : log_info ("%s %s stopped\n", strusage(11), strusage(13));
2112 0 : }
2113 :
2114 : const char*
2115 0 : dirmngr_get_current_socket_name (void)
2116 : {
2117 0 : if (socket_name)
2118 0 : return socket_name;
2119 : else
2120 0 : return dirmngr_socket_name ();
2121 : }
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