1 /*************************************************
2 * Exim - an Internet mail transport agent *
3 *************************************************/
5 /* Copyright (c) University of Cambridge 1995 - 2014 */
6 /* See the file NOTICE for conditions of use and distribution. */
8 /* Functions for reading the configuration file, and for displaying
9 overall configuration values. Thanks to Brian Candler for the original
10 implementation of the conditional .ifdef etc. */
14 #define CSTATE_STACK_SIZE 10
17 /* Structure for chain (stack) of .included files */
19 typedef struct config_file_item {
20 struct config_file_item *next;
26 /* Structure of table of conditional words and their state transitions */
28 typedef struct cond_item {
36 /* Structure of table of syslog facility names and values */
38 typedef struct syslog_fac_item {
44 /* Static variables */
46 static config_file_item *config_file_stack = NULL; /* For includes */
48 static uschar *syslog_facility_str = NULL;
49 static uschar next_section[24];
50 static uschar time_buffer[24];
52 /* State variables for conditional loading (.ifdef / .else / .endif) */
54 static int cstate = 0;
55 static int cstate_stack_ptr = -1;
56 static int cstate_stack[CSTATE_STACK_SIZE];
58 /* Table of state transitions for handling conditional inclusions. There are
59 four possible state transitions:
63 .elifdef true (or .else)
66 .endif just causes the previous cstate to be popped off the stack */
68 static int next_cstate[3][4] =
70 /* State 0: reading from file, or reading until next .else or .endif */
72 /* State 1: condition failed, skipping until next .else or .endif */
74 /* State 2: skipping until .endif */
78 /* Table of conditionals and the states to set. For each name, there are four
79 values: the length of the name (to save computing it each time), the state to
80 set if a macro was found in the line, the state to set if a macro was not found
81 in the line, and a stack manipulation setting which is:
83 -1 pull state value off the stack
84 0 don't alter the stack
85 +1 push value onto stack, before setting new state
88 static cond_item cond_list[] = {
89 { US"ifdef", 5, 0, 1, 1 },
90 { US"ifndef", 6, 1, 0, 1 },
91 { US"elifdef", 7, 2, 3, 0 },
92 { US"elifndef", 8, 3, 2, 0 },
93 { US"else", 4, 2, 2, 0 },
94 { US"endif", 5, 0, 0, -1 }
97 static int cond_list_size = sizeof(cond_list)/sizeof(cond_item);
99 /* Table of syslog facility names and their values */
101 static syslog_fac_item syslog_list[] = {
102 { US"mail", LOG_MAIL },
103 { US"user", LOG_USER },
104 { US"news", LOG_NEWS },
105 { US"uucp", LOG_UUCP },
106 { US"local0", LOG_LOCAL0 },
107 { US"local1", LOG_LOCAL1 },
108 { US"local2", LOG_LOCAL2 },
109 { US"local3", LOG_LOCAL3 },
110 { US"local4", LOG_LOCAL4 },
111 { US"local5", LOG_LOCAL5 },
112 { US"local6", LOG_LOCAL6 },
113 { US"local7", LOG_LOCAL7 },
114 { US"daemon", LOG_DAEMON }
117 static int syslog_list_size = sizeof(syslog_list)/sizeof(syslog_fac_item);
122 /*************************************************
123 * Main configuration options *
124 *************************************************/
126 /* The list of options that can be set in the main configuration file. This
127 must be in alphabetic order because it is searched by binary chop. */
129 static optionlist optionlist_config[] = {
130 { "*set_exim_group", opt_bool|opt_hidden, &exim_gid_set },
131 { "*set_exim_user", opt_bool|opt_hidden, &exim_uid_set },
132 { "*set_system_filter_group", opt_bool|opt_hidden, &system_filter_gid_set },
133 { "*set_system_filter_user", opt_bool|opt_hidden, &system_filter_uid_set },
134 { "accept_8bitmime", opt_bool, &accept_8bitmime },
135 { "acl_not_smtp", opt_stringptr, &acl_not_smtp },
136 #ifdef WITH_CONTENT_SCAN
137 { "acl_not_smtp_mime", opt_stringptr, &acl_not_smtp_mime },
139 { "acl_not_smtp_start", opt_stringptr, &acl_not_smtp_start },
140 { "acl_smtp_auth", opt_stringptr, &acl_smtp_auth },
141 { "acl_smtp_connect", opt_stringptr, &acl_smtp_connect },
142 { "acl_smtp_data", opt_stringptr, &acl_smtp_data },
144 { "acl_smtp_data_prdr", opt_stringptr, &acl_smtp_data_prdr },
147 { "acl_smtp_dkim", opt_stringptr, &acl_smtp_dkim },
149 { "acl_smtp_etrn", opt_stringptr, &acl_smtp_etrn },
150 { "acl_smtp_expn", opt_stringptr, &acl_smtp_expn },
151 { "acl_smtp_helo", opt_stringptr, &acl_smtp_helo },
152 { "acl_smtp_mail", opt_stringptr, &acl_smtp_mail },
153 { "acl_smtp_mailauth", opt_stringptr, &acl_smtp_mailauth },
154 #ifdef WITH_CONTENT_SCAN
155 { "acl_smtp_mime", opt_stringptr, &acl_smtp_mime },
157 { "acl_smtp_notquit", opt_stringptr, &acl_smtp_notquit },
158 { "acl_smtp_predata", opt_stringptr, &acl_smtp_predata },
159 { "acl_smtp_quit", opt_stringptr, &acl_smtp_quit },
160 { "acl_smtp_rcpt", opt_stringptr, &acl_smtp_rcpt },
162 { "acl_smtp_starttls", opt_stringptr, &acl_smtp_starttls },
164 { "acl_smtp_vrfy", opt_stringptr, &acl_smtp_vrfy },
165 { "admin_groups", opt_gidlist, &admin_groups },
166 { "allow_domain_literals", opt_bool, &allow_domain_literals },
167 { "allow_mx_to_ip", opt_bool, &allow_mx_to_ip },
168 { "allow_utf8_domains", opt_bool, &allow_utf8_domains },
169 { "auth_advertise_hosts", opt_stringptr, &auth_advertise_hosts },
170 { "auto_thaw", opt_time, &auto_thaw },
171 #ifdef WITH_CONTENT_SCAN
172 { "av_scanner", opt_stringptr, &av_scanner },
174 { "bi_command", opt_stringptr, &bi_command },
175 #ifdef EXPERIMENTAL_BRIGHTMAIL
176 { "bmi_config_file", opt_stringptr, &bmi_config_file },
178 { "bounce_message_file", opt_stringptr, &bounce_message_file },
179 { "bounce_message_text", opt_stringptr, &bounce_message_text },
180 { "bounce_return_body", opt_bool, &bounce_return_body },
181 { "bounce_return_message", opt_bool, &bounce_return_message },
182 { "bounce_return_size_limit", opt_mkint, &bounce_return_size_limit },
183 { "bounce_sender_authentication",opt_stringptr,&bounce_sender_authentication },
184 { "callout_domain_negative_expire", opt_time, &callout_cache_domain_negative_expire },
185 { "callout_domain_positive_expire", opt_time, &callout_cache_domain_positive_expire },
186 { "callout_negative_expire", opt_time, &callout_cache_negative_expire },
187 { "callout_positive_expire", opt_time, &callout_cache_positive_expire },
188 { "callout_random_local_part",opt_stringptr, &callout_random_local_part },
189 { "check_log_inodes", opt_int, &check_log_inodes },
190 { "check_log_space", opt_Kint, &check_log_space },
191 { "check_rfc2047_length", opt_bool, &check_rfc2047_length },
192 { "check_spool_inodes", opt_int, &check_spool_inodes },
193 { "check_spool_space", opt_Kint, &check_spool_space },
194 { "daemon_smtp_port", opt_stringptr|opt_hidden, &daemon_smtp_port },
195 { "daemon_smtp_ports", opt_stringptr, &daemon_smtp_port },
196 { "daemon_startup_retries", opt_int, &daemon_startup_retries },
197 { "daemon_startup_sleep", opt_time, &daemon_startup_sleep },
198 #ifdef EXPERIMENTAL_DCC
199 { "dcc_direct_add_header", opt_bool, &dcc_direct_add_header },
200 { "dccifd_address", opt_stringptr, &dccifd_address },
201 { "dccifd_options", opt_stringptr, &dccifd_options },
203 { "delay_warning", opt_timelist, &delay_warning },
204 { "delay_warning_condition", opt_stringptr, &delay_warning_condition },
205 { "deliver_drop_privilege", opt_bool, &deliver_drop_privilege },
206 { "deliver_queue_load_max", opt_fixed, &deliver_queue_load_max },
207 { "delivery_date_remove", opt_bool, &delivery_date_remove },
208 #ifdef ENABLE_DISABLE_FSYNC
209 { "disable_fsync", opt_bool, &disable_fsync },
211 { "disable_ipv6", opt_bool, &disable_ipv6 },
213 { "dkim_verify_signers", opt_stringptr, &dkim_verify_signers },
215 #ifdef EXPERIMENTAL_DMARC
216 { "dmarc_forensic_sender", opt_stringptr, &dmarc_forensic_sender },
217 { "dmarc_history_file", opt_stringptr, &dmarc_history_file },
218 { "dmarc_tld_file", opt_stringptr, &dmarc_tld_file },
220 { "dns_again_means_nonexist", opt_stringptr, &dns_again_means_nonexist },
221 { "dns_check_names_pattern", opt_stringptr, &check_dns_names_pattern },
222 { "dns_csa_search_limit", opt_int, &dns_csa_search_limit },
223 { "dns_csa_use_reverse", opt_bool, &dns_csa_use_reverse },
224 { "dns_dnssec_ok", opt_int, &dns_dnssec_ok },
225 { "dns_ipv4_lookup", opt_stringptr, &dns_ipv4_lookup },
226 { "dns_retrans", opt_time, &dns_retrans },
227 { "dns_retry", opt_int, &dns_retry },
228 { "dns_use_edns0", opt_int, &dns_use_edns0 },
229 /* This option is now a no-op, retained for compability */
230 { "drop_cr", opt_bool, &drop_cr },
231 /*********************************************************/
232 #ifdef EXPERIMENTAL_DSN
233 { "dsn_advertise_hosts", opt_stringptr, &dsn_advertise_hosts },
235 { "dsn_from", opt_stringptr, &dsn_from },
236 { "envelope_to_remove", opt_bool, &envelope_to_remove },
237 { "errors_copy", opt_stringptr, &errors_copy },
238 { "errors_reply_to", opt_stringptr, &errors_reply_to },
239 { "exim_group", opt_gid, &exim_gid },
240 { "exim_path", opt_stringptr, &exim_path },
241 { "exim_user", opt_uid, &exim_uid },
242 { "extra_local_interfaces", opt_stringptr, &extra_local_interfaces },
243 { "extract_addresses_remove_arguments", opt_bool, &extract_addresses_remove_arguments },
244 { "finduser_retries", opt_int, &finduser_retries },
245 { "freeze_tell", opt_stringptr, &freeze_tell },
246 { "gecos_name", opt_stringptr, &gecos_name },
247 { "gecos_pattern", opt_stringptr, &gecos_pattern },
249 { "gnutls_allow_auto_pkcs11", opt_bool, &gnutls_allow_auto_pkcs11 },
250 { "gnutls_compat_mode", opt_bool, &gnutls_compat_mode },
251 /* These three gnutls_require_* options stopped working in Exim 4.80 */
252 /* From 4.83 we log a warning; a future relase will remove them */
253 { "gnutls_require_kx", opt_stringptr, &gnutls_require_kx },
254 { "gnutls_require_mac", opt_stringptr, &gnutls_require_mac },
255 { "gnutls_require_protocols", opt_stringptr, &gnutls_require_proto },
257 { "header_line_maxsize", opt_int, &header_line_maxsize },
258 { "header_maxsize", opt_int, &header_maxsize },
259 { "headers_charset", opt_stringptr, &headers_charset },
260 { "helo_accept_junk_hosts", opt_stringptr, &helo_accept_junk_hosts },
261 { "helo_allow_chars", opt_stringptr, &helo_allow_chars },
262 { "helo_lookup_domains", opt_stringptr, &helo_lookup_domains },
263 { "helo_try_verify_hosts", opt_stringptr, &helo_try_verify_hosts },
264 { "helo_verify_hosts", opt_stringptr, &helo_verify_hosts },
265 { "hold_domains", opt_stringptr, &hold_domains },
266 { "host_lookup", opt_stringptr, &host_lookup },
267 { "host_lookup_order", opt_stringptr, &host_lookup_order },
268 { "host_reject_connection", opt_stringptr, &host_reject_connection },
269 { "hosts_connection_nolog", opt_stringptr, &hosts_connection_nolog },
270 { "hosts_treat_as_local", opt_stringptr, &hosts_treat_as_local },
272 { "ibase_servers", opt_stringptr, &ibase_servers },
274 { "ignore_bounce_errors_after", opt_time, &ignore_bounce_errors_after },
275 { "ignore_fromline_hosts", opt_stringptr, &ignore_fromline_hosts },
276 { "ignore_fromline_local", opt_bool, &ignore_fromline_local },
277 { "keep_malformed", opt_time, &keep_malformed },
279 { "ldap_ca_cert_dir", opt_stringptr, &eldap_ca_cert_dir },
280 { "ldap_ca_cert_file", opt_stringptr, &eldap_ca_cert_file },
281 { "ldap_cert_file", opt_stringptr, &eldap_cert_file },
282 { "ldap_cert_key", opt_stringptr, &eldap_cert_key },
283 { "ldap_cipher_suite", opt_stringptr, &eldap_cipher_suite },
284 { "ldap_default_servers", opt_stringptr, &eldap_default_servers },
285 { "ldap_require_cert", opt_stringptr, &eldap_require_cert },
286 { "ldap_start_tls", opt_bool, &eldap_start_tls },
287 { "ldap_version", opt_int, &eldap_version },
289 { "local_from_check", opt_bool, &local_from_check },
290 { "local_from_prefix", opt_stringptr, &local_from_prefix },
291 { "local_from_suffix", opt_stringptr, &local_from_suffix },
292 { "local_interfaces", opt_stringptr, &local_interfaces },
293 { "local_scan_timeout", opt_time, &local_scan_timeout },
294 { "local_sender_retain", opt_bool, &local_sender_retain },
295 { "localhost_number", opt_stringptr, &host_number_string },
296 { "log_file_path", opt_stringptr, &log_file_path },
297 { "log_selector", opt_stringptr, &log_selector_string },
298 { "log_timezone", opt_bool, &log_timezone },
299 { "lookup_open_max", opt_int, &lookup_open_max },
300 { "max_username_length", opt_int, &max_username_length },
301 { "message_body_newlines", opt_bool, &message_body_newlines },
302 { "message_body_visible", opt_mkint, &message_body_visible },
303 { "message_id_header_domain", opt_stringptr, &message_id_domain },
304 { "message_id_header_text", opt_stringptr, &message_id_text },
305 { "message_logs", opt_bool, &message_logs },
306 { "message_size_limit", opt_stringptr, &message_size_limit },
307 #ifdef SUPPORT_MOVE_FROZEN_MESSAGES
308 { "move_frozen_messages", opt_bool, &move_frozen_messages },
310 { "mua_wrapper", opt_bool, &mua_wrapper },
312 { "mysql_servers", opt_stringptr, &mysql_servers },
314 { "never_users", opt_uidlist, &never_users },
316 { "openssl_options", opt_stringptr, &openssl_options },
319 { "oracle_servers", opt_stringptr, &oracle_servers },
321 { "percent_hack_domains", opt_stringptr, &percent_hack_domains },
323 { "perl_at_start", opt_bool, &opt_perl_at_start },
324 { "perl_startup", opt_stringptr, &opt_perl_startup },
327 { "pgsql_servers", opt_stringptr, &pgsql_servers },
329 { "pid_file_path", opt_stringptr, &pid_file_path },
330 { "pipelining_advertise_hosts", opt_stringptr, &pipelining_advertise_hosts },
332 { "prdr_enable", opt_bool, &prdr_enable },
334 { "preserve_message_logs", opt_bool, &preserve_message_logs },
335 { "primary_hostname", opt_stringptr, &primary_hostname },
336 { "print_topbitchars", opt_bool, &print_topbitchars },
337 { "process_log_path", opt_stringptr, &process_log_path },
338 { "prod_requires_admin", opt_bool, &prod_requires_admin },
339 #ifdef EXPERIMENTAL_PROXY
340 { "proxy_required_hosts", opt_stringptr, &proxy_required_hosts },
342 { "qualify_domain", opt_stringptr, &qualify_domain_sender },
343 { "qualify_recipient", opt_stringptr, &qualify_domain_recipient },
344 { "queue_domains", opt_stringptr, &queue_domains },
345 { "queue_list_requires_admin",opt_bool, &queue_list_requires_admin },
346 { "queue_only", opt_bool, &queue_only },
347 { "queue_only_file", opt_stringptr, &queue_only_file },
348 { "queue_only_load", opt_fixed, &queue_only_load },
349 { "queue_only_load_latch", opt_bool, &queue_only_load_latch },
350 { "queue_only_override", opt_bool, &queue_only_override },
351 { "queue_run_in_order", opt_bool, &queue_run_in_order },
352 { "queue_run_max", opt_int, &queue_run_max },
353 { "queue_smtp_domains", opt_stringptr, &queue_smtp_domains },
354 { "receive_timeout", opt_time, &receive_timeout },
355 { "received_header_text", opt_stringptr, &received_header_text },
356 { "received_headers_max", opt_int, &received_headers_max },
357 { "recipient_unqualified_hosts", opt_stringptr, &recipient_unqualified_hosts },
358 { "recipients_max", opt_int, &recipients_max },
359 { "recipients_max_reject", opt_bool, &recipients_max_reject },
360 #ifdef EXPERIMENTAL_REDIS
361 { "redis_servers", opt_stringptr, &redis_servers },
363 { "remote_max_parallel", opt_int, &remote_max_parallel },
364 { "remote_sort_domains", opt_stringptr, &remote_sort_domains },
365 { "retry_data_expire", opt_time, &retry_data_expire },
366 { "retry_interval_max", opt_time, &retry_interval_max },
367 { "return_path_remove", opt_bool, &return_path_remove },
368 { "return_size_limit", opt_mkint|opt_hidden, &bounce_return_size_limit },
369 { "rfc1413_hosts", opt_stringptr, &rfc1413_hosts },
370 { "rfc1413_query_timeout", opt_time, &rfc1413_query_timeout },
371 { "sender_unqualified_hosts", opt_stringptr, &sender_unqualified_hosts },
372 { "smtp_accept_keepalive", opt_bool, &smtp_accept_keepalive },
373 { "smtp_accept_max", opt_int, &smtp_accept_max },
374 { "smtp_accept_max_nonmail", opt_int, &smtp_accept_max_nonmail },
375 { "smtp_accept_max_nonmail_hosts", opt_stringptr, &smtp_accept_max_nonmail_hosts },
376 { "smtp_accept_max_per_connection", opt_int, &smtp_accept_max_per_connection },
377 { "smtp_accept_max_per_host", opt_stringptr, &smtp_accept_max_per_host },
378 { "smtp_accept_queue", opt_int, &smtp_accept_queue },
379 { "smtp_accept_queue_per_connection", opt_int, &smtp_accept_queue_per_connection },
380 { "smtp_accept_reserve", opt_int, &smtp_accept_reserve },
381 { "smtp_active_hostname", opt_stringptr, &raw_active_hostname },
382 { "smtp_banner", opt_stringptr, &smtp_banner },
383 { "smtp_check_spool_space", opt_bool, &smtp_check_spool_space },
384 { "smtp_connect_backlog", opt_int, &smtp_connect_backlog },
385 { "smtp_enforce_sync", opt_bool, &smtp_enforce_sync },
386 { "smtp_etrn_command", opt_stringptr, &smtp_etrn_command },
387 { "smtp_etrn_serialize", opt_bool, &smtp_etrn_serialize },
388 { "smtp_load_reserve", opt_fixed, &smtp_load_reserve },
389 { "smtp_max_synprot_errors", opt_int, &smtp_max_synprot_errors },
390 { "smtp_max_unknown_commands",opt_int, &smtp_max_unknown_commands },
391 { "smtp_ratelimit_hosts", opt_stringptr, &smtp_ratelimit_hosts },
392 { "smtp_ratelimit_mail", opt_stringptr, &smtp_ratelimit_mail },
393 { "smtp_ratelimit_rcpt", opt_stringptr, &smtp_ratelimit_rcpt },
394 { "smtp_receive_timeout", opt_time, &smtp_receive_timeout },
395 { "smtp_reserve_hosts", opt_stringptr, &smtp_reserve_hosts },
396 { "smtp_return_error_details",opt_bool, &smtp_return_error_details },
397 #ifdef WITH_CONTENT_SCAN
398 { "spamd_address", opt_stringptr, &spamd_address },
400 #ifdef EXPERIMENTAL_SPF
401 { "spf_guess", opt_stringptr, &spf_guess },
403 { "split_spool_directory", opt_bool, &split_spool_directory },
404 { "spool_directory", opt_stringptr, &spool_directory },
406 { "sqlite_lock_timeout", opt_int, &sqlite_lock_timeout },
408 #ifdef EXPERIMENTAL_SRS
409 { "srs_config", opt_stringptr, &srs_config },
410 { "srs_hashlength", opt_int, &srs_hashlength },
411 { "srs_hashmin", opt_int, &srs_hashmin },
412 { "srs_maxage", opt_int, &srs_maxage },
413 { "srs_secrets", opt_stringptr, &srs_secrets },
414 { "srs_usehash", opt_bool, &srs_usehash },
415 { "srs_usetimestamp", opt_bool, &srs_usetimestamp },
417 { "strict_acl_vars", opt_bool, &strict_acl_vars },
418 { "strip_excess_angle_brackets", opt_bool, &strip_excess_angle_brackets },
419 { "strip_trailing_dot", opt_bool, &strip_trailing_dot },
420 { "syslog_duplication", opt_bool, &syslog_duplication },
421 { "syslog_facility", opt_stringptr, &syslog_facility_str },
422 { "syslog_processname", opt_stringptr, &syslog_processname },
423 { "syslog_timestamp", opt_bool, &syslog_timestamp },
424 { "system_filter", opt_stringptr, &system_filter },
425 { "system_filter_directory_transport", opt_stringptr,&system_filter_directory_transport },
426 { "system_filter_file_transport",opt_stringptr,&system_filter_file_transport },
427 { "system_filter_group", opt_gid, &system_filter_gid },
428 { "system_filter_pipe_transport",opt_stringptr,&system_filter_pipe_transport },
429 { "system_filter_reply_transport",opt_stringptr,&system_filter_reply_transport },
430 { "system_filter_user", opt_uid, &system_filter_uid },
431 { "tcp_nodelay", opt_bool, &tcp_nodelay },
432 #ifdef USE_TCP_WRAPPERS
433 { "tcp_wrappers_daemon_name", opt_stringptr, &tcp_wrappers_daemon_name },
435 { "timeout_frozen_after", opt_time, &timeout_frozen_after },
436 { "timezone", opt_stringptr, &timezone_string },
438 { "tls_advertise_hosts", opt_stringptr, &tls_advertise_hosts },
439 { "tls_certificate", opt_stringptr, &tls_certificate },
440 { "tls_crl", opt_stringptr, &tls_crl },
441 { "tls_dh_max_bits", opt_int, &tls_dh_max_bits },
442 { "tls_dhparam", opt_stringptr, &tls_dhparam },
443 # ifndef DISABLE_OCSP
444 { "tls_ocsp_file", opt_stringptr, &tls_ocsp_file },
446 { "tls_on_connect_ports", opt_stringptr, &tls_in.on_connect_ports },
447 { "tls_privatekey", opt_stringptr, &tls_privatekey },
448 { "tls_remember_esmtp", opt_bool, &tls_remember_esmtp },
449 { "tls_require_ciphers", opt_stringptr, &tls_require_ciphers },
450 { "tls_try_verify_hosts", opt_stringptr, &tls_try_verify_hosts },
451 { "tls_verify_certificates", opt_stringptr, &tls_verify_certificates },
452 { "tls_verify_hosts", opt_stringptr, &tls_verify_hosts },
454 { "trusted_groups", opt_gidlist, &trusted_groups },
455 { "trusted_users", opt_uidlist, &trusted_users },
456 { "unknown_login", opt_stringptr, &unknown_login },
457 { "unknown_username", opt_stringptr, &unknown_username },
458 { "untrusted_set_sender", opt_stringptr, &untrusted_set_sender },
459 { "uucp_from_pattern", opt_stringptr, &uucp_from_pattern },
460 { "uucp_from_sender", opt_stringptr, &uucp_from_sender },
461 { "warn_message_file", opt_stringptr, &warn_message_file },
462 { "write_rejectlog", opt_bool, &write_rejectlog }
465 static int optionlist_config_size =
466 sizeof(optionlist_config)/sizeof(optionlist);
470 /*************************************************
471 * Find the name of an option *
472 *************************************************/
474 /* This function is to aid debugging. Various functions take arguments that are
475 pointer variables in the options table or in option tables for various drivers.
476 For debugging output, it is useful to be able to find the name of the option
477 which is currently being processed. This function finds it, if it exists, by
478 searching the table(s).
480 Arguments: a value that is presumed to be in the table above
481 Returns: the option name, or an empty string
485 readconf_find_option(void *p)
489 transport_instance *t;
491 for (i = 0; i < optionlist_config_size; i++)
492 if (p == optionlist_config[i].value) return US optionlist_config[i].name;
494 for (r = routers; r != NULL; r = r->next)
496 router_info *ri = r->info;
497 for (i = 0; i < ri->options_count[0]; i++)
499 if ((ri->options[i].type & opt_mask) != opt_stringptr) continue;
500 if (p == (char *)(r->options_block) + (long int)(ri->options[i].value))
501 return US ri->options[i].name;
505 for (t = transports; t != NULL; t = t->next)
507 transport_info *ti = t->info;
508 for (i = 0; i < ti->options_count[0]; i++)
510 if ((ti->options[i].type & opt_mask) != opt_stringptr) continue;
511 if (p == (char *)(t->options_block) + (long int)(ti->options[i].value))
512 return US ti->options[i].name;
522 /*************************************************
523 * Deal with an assignment to a macro *
524 *************************************************/
526 /* This function is called when a line that starts with an upper case letter is
527 encountered. The argument "line" should contain a complete logical line, and
528 start with the first letter of the macro name. The macro name and the
529 replacement text are extracted and stored. Redefinition of existing,
530 non-command line, macros is permitted using '==' instead of '='.
533 s points to the start of the logical line
539 read_macro_assignment(uschar *s)
545 macro_item *mlast = NULL;
547 while (isalnum(*s) || *s == '_')
549 if (namelen >= sizeof(name) - 1)
550 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
551 "macro name too long (maximum is " SIZE_T_FMT " characters)", sizeof(name) - 1);
552 name[namelen++] = *s++;
556 while (isspace(*s)) s++;
558 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "malformed macro definition");
565 while (isspace(*s)) s++;
567 /* If an existing macro of the same name was defined on the command line, we
568 just skip this definition. It's an error to attempt to redefine a macro without
569 redef set to TRUE, or to redefine a macro when it hasn't been defined earlier.
570 It is also an error to define a macro whose name begins with the name of a
571 previously defined macro. Note: it is documented that the other way round
574 for (m = macros; m != NULL; m = m->next)
576 int len = Ustrlen(m->name);
578 if (Ustrcmp(m->name, name) == 0)
580 if (!m->command_line && !redef)
581 log_write(0, LOG_CONFIG|LOG_PANIC_DIE, "macro \"%s\" is already "
582 "defined (use \"==\" if you want to redefine it", name);
586 if (len < namelen && Ustrstr(name, m->name) != NULL)
587 log_write(0, LOG_CONFIG|LOG_PANIC_DIE, "\"%s\" cannot be defined as "
588 "a macro because previously defined macro \"%s\" is a substring",
591 /* We cannot have this test, because it is documented that a substring
592 macro is permitted (there is even an example).
594 * if (len > namelen && Ustrstr(m->name, name) != NULL)
595 * log_write(0, LOG_CONFIG|LOG_PANIC_DIE, "\"%s\" cannot be defined as "
596 * "a macro because it is a substring of previously defined macro \"%s\"",
603 /* Check for an overriding command-line definition. */
605 if (m != NULL && m->command_line) return;
607 /* Redefinition must refer to an existing macro. */
612 log_write(0, LOG_CONFIG|LOG_PANIC_DIE, "can't redefine an undefined macro "
616 /* We have a new definition. The macro_item structure includes a final vector
617 called "name" which is one byte long. Thus, adding "namelen" gives us enough
618 room to store the "name" string. */
622 m = store_get(sizeof(macro_item) + namelen);
623 if (macros == NULL) macros = m; else mlast->next = m;
624 Ustrncpy(m->name, name, namelen);
625 m->name[namelen] = 0;
627 m->command_line = FALSE;
630 /* Set the value of the new or redefined macro */
632 m->replacement = string_copy(s);
639 /*************************************************
640 * Read configuration line *
641 *************************************************/
643 /* A logical line of text is read from the configuration file into the big
644 buffer, taking account of macros, .includes, and continuations. The size of
645 big_buffer is increased if necessary. The count of configuration lines is
646 maintained. Physical input lines starting with # (ignoring leading white space,
647 and after macro replacement) and empty logical lines are always ignored.
648 Leading and trailing spaces are removed.
650 If we hit a line of the form "begin xxxx", the xxxx is placed in the
651 next_section vector, and the function returns NULL, indicating the end of a
652 configuration section. On end-of-file, NULL is returned with next_section
657 Returns: a pointer to the first non-blank in the line,
658 or NULL if eof or end of section is reached
662 get_config_line(void)
664 int startoffset = 0; /* To first non-blank char in logical line */
665 int len = 0; /* Of logical line so far */
671 /* Loop for handling continuation lines, skipping comments, and dealing with
676 if (Ufgets(big_buffer+len, big_buffer_size-len, config_file) == NULL)
678 if (config_file_stack != NULL) /* EOF inside .include */
680 (void)fclose(config_file);
681 config_file = config_file_stack->file;
682 config_filename = config_file_stack->filename;
683 config_lineno = config_file_stack->lineno;
684 config_file_stack = config_file_stack->next;
688 /* EOF at top level */
690 if (cstate_stack_ptr >= 0)
691 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
692 "Unexpected end of configuration file: .endif missing");
694 if (len != 0) break; /* EOF after continuation */
695 next_section[0] = 0; /* EOF at start of logical line */
700 newlen = len + Ustrlen(big_buffer + len);
702 /* Handle pathologically long physical lines - yes, it did happen - by
703 extending big_buffer at this point. The code also copes with very long
706 while (newlen == big_buffer_size - 1 && big_buffer[newlen - 1] != '\n')
709 big_buffer_size += BIG_BUFFER_SIZE;
710 newbuffer = store_malloc(big_buffer_size);
712 /* This use of strcpy is OK because we know that the string in the old
713 buffer is shorter than the new buffer. */
715 Ustrcpy(newbuffer, big_buffer);
716 store_free(big_buffer);
717 big_buffer = newbuffer;
718 if (Ufgets(big_buffer+newlen, big_buffer_size-newlen, config_file) == NULL)
720 newlen += Ustrlen(big_buffer + newlen);
723 /* Find the true start of the physical line - leading spaces are always
726 ss = big_buffer + len;
727 while (isspace(*ss)) ss++;
729 /* Process the physical line for macros. If this is the start of the logical
730 line, skip over initial text at the start of the line if it starts with an
731 upper case character followed by a sequence of name characters and an equals
732 sign, because that is the definition of a new macro, and we don't do
733 replacement therein. */
736 if (len == 0 && isupper(*s))
738 while (isalnum(*s) || *s == '_') s++;
739 while (isspace(*s)) s++;
740 if (*s != '=') s = ss; /* Not a macro definition */
743 /* For each defined macro, scan the line (from after XXX= if present),
744 replacing all occurrences of the macro. */
747 for (m = macros; m != NULL; m = m->next)
752 while ((p = Ustrstr(t, m->name)) != NULL)
755 int namelen = Ustrlen(m->name);
756 int replen = Ustrlen(m->replacement);
758 /* Expand the buffer if necessary */
760 while (newlen - namelen + replen + 1 > big_buffer_size)
762 int newsize = big_buffer_size + BIG_BUFFER_SIZE;
763 uschar *newbuffer = store_malloc(newsize);
764 memcpy(newbuffer, big_buffer, newlen + 1);
765 p = newbuffer + (p - big_buffer);
766 s = newbuffer + (s - big_buffer);
767 ss = newbuffer + (ss - big_buffer);
768 t = newbuffer + (t - big_buffer);
769 big_buffer_size = newsize;
770 store_free(big_buffer);
771 big_buffer = newbuffer;
774 /* Shuffle the remaining characters up or down in the buffer before
775 copying in the replacement text. Don't rescan the replacement for this
779 moveby = replen - namelen;
782 memmove(p + replen, pp, (big_buffer + newlen) - pp + 1);
785 Ustrncpy(p, m->replacement, replen);
791 /* An empty macro replacement at the start of a line could mean that ss no
792 longer points to the first non-blank character. */
794 while (isspace(*ss)) ss++;
796 /* Check for comment lines - these are physical lines. */
798 if (*ss == '#') continue;
800 /* Handle conditionals, which are also applied to physical lines. Conditions
801 are of the form ".ifdef ANYTEXT" and are treated as true if any macro
802 expansion occured on the rest of the line. A preliminary test for the leading
803 '.' saves effort on most lines. */
809 /* Search the list of conditional directives */
811 for (i = 0; i < cond_list_size; i++)
814 cond_item *c = cond_list+i;
815 if (Ustrncmp(ss+1, c->name, c->namelen) != 0) continue;
817 /* The following character must be white space or end of string */
819 n = ss[1 + c->namelen];
820 if (n != ' ' && n != 't' && n != '\n' && n != 0) break;
822 /* .ifdef and .ifndef push the current state onto the stack, then set
823 a new one from the table. Stack overflow is an error */
827 if (cstate_stack_ptr >= CSTATE_STACK_SIZE - 1)
828 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
829 ".%s nested too deeply", c->name);
830 cstate_stack[++cstate_stack_ptr] = cstate;
831 cstate = next_cstate[cstate][macro_found? c->action1 : c->action2];
834 /* For any of the others, stack underflow is an error. The next state
835 comes either from the stack (.endif) or from the table. */
839 if (cstate_stack_ptr < 0)
840 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
841 ".%s without matching .ifdef", c->name);
842 cstate = (c->pushpop < 0)? cstate_stack[cstate_stack_ptr--] :
843 next_cstate[cstate][macro_found? c->action1 : c->action2];
846 /* Having dealt with a directive, break the loop */
851 /* If we have handled a conditional directive, continue with the next
852 physical line. Otherwise, fall through. */
854 if (i < cond_list_size) continue;
857 /* If the conditional state is not 0 (actively using these lines), ignore
860 if (cstate != 0) continue; /* Conditional skip */
862 /* Handle .include lines - these are also physical lines. */
864 if (Ustrncmp(ss, ".include", 8) == 0 &&
866 (Ustrncmp(ss+8, "_if_exists", 10) == 0 && isspace(ss[18]))))
869 int include_if_exists = isspace(ss[8])? 0 : 10;
870 config_file_item *save;
873 ss += 9 + include_if_exists;
874 while (isspace(*ss)) ss++;
875 t = ss + Ustrlen(ss);
876 while (t > ss && isspace(t[-1])) t--;
877 if (*ss == '\"' && t[-1] == '\"')
885 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, ".include specifies a non-"
886 "absolute path \"%s\"", ss);
888 if (include_if_exists != 0 && (Ustat(ss, &statbuf) != 0)) continue;
890 save = store_get(sizeof(config_file_item));
891 save->next = config_file_stack;
892 config_file_stack = save;
893 save->file = config_file;
894 save->filename = config_filename;
895 save->lineno = config_lineno;
897 config_file = Ufopen(ss, "rb");
898 if (config_file == NULL)
899 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "failed to open included "
900 "configuration file %s", ss);
901 config_filename = string_copy(ss);
906 /* If this is the start of the logical line, remember where the non-blank
907 data starts. Otherwise shuffle down continuation lines to remove leading
911 startoffset = ss - big_buffer;
914 s = big_buffer + len;
917 memmove(s, ss, (newlen - len) - (ss - s) + 1);
922 /* Accept the new addition to the line. Remove trailing white space. */
925 while (len > 0 && isspace(big_buffer[len-1])) len--;
928 /* We are done if the line does not end in backslash and contains some data.
929 Empty logical lines are ignored. For continuations, remove the backslash and
930 go round the loop to read the continuation line. */
934 if (big_buffer[len-1] != '\\') break; /* End of logical line */
935 big_buffer[--len] = 0; /* Remove backslash */
937 } /* Loop for reading multiple physical lines */
939 /* We now have a logical line. Test for the end of a configuration section (or,
940 more accurately, for the start of the next section). Place the name of the next
941 section in next_section, and return NULL. If the name given is longer than
942 next_section, truncate it. It will be unrecognized later, because all the known
943 section names do fit. Leave space for pluralizing. */
945 s = big_buffer + startoffset; /* First non-space character */
946 if (strncmpic(s, US"begin ", 6) == 0)
949 while (isspace(*s)) s++;
950 if (big_buffer + len - s > sizeof(next_section) - 2)
951 s[sizeof(next_section) - 2] = 0;
952 Ustrcpy(next_section, s);
956 /* Return the first non-blank character. */
963 /*************************************************
965 *************************************************/
967 /* The yield is the pointer to the next uschar. Names longer than the
968 output space are silently truncated. This function is also used from acl.c when
972 name where to put the name
976 Returns: new input pointer
980 readconf_readname(uschar *name, int len, uschar *s)
983 while (isspace(*s)) s++;
986 while (isalnum(*s) || *s == '_')
988 if (p < len-1) name[p++] = *s;
993 while (isspace(*s)) s++;
1000 /*************************************************
1001 * Read a time value *
1002 *************************************************/
1004 /* This function is also called from outside, to read argument
1005 time values. The format of a time value is:
1007 [<n>w][<n>d][<n>h][<n>m][<n>s]
1009 as long as at least one is present. If a format error is encountered,
1010 return a negative value. The value must be terminated by the given
1015 terminator required terminating character
1016 return_msec if TRUE, allow fractional seconds and return milliseconds
1018 Returns: the time value, or -1 on syntax error
1019 value is seconds if return_msec is FALSE
1020 value is milliseconds if return_msec is TRUE
1024 readconf_readtime(uschar *s, int terminator, BOOL return_msec)
1032 if (!isdigit(*s)) return -1;
1033 (void)sscanf(CS s, "%d%n", &value, &count);
1038 case 'w': value *= 7;
1039 case 'd': value *= 24;
1040 case 'h': value *= 60;
1041 case 'm': value *= 60;
1046 if (!return_msec) return -1;
1047 (void)sscanf(CS s, "%lf%n", &fraction, &count);
1049 if (*s++ != 's') return -1;
1050 yield += (int)(fraction * 1000.0);
1056 if (return_msec) value *= 1000;
1058 if (*s == terminator) return yield;
1060 /* Control never reaches here. */
1065 /*************************************************
1066 * Read a fixed point value *
1067 *************************************************/
1069 /* The value is returned *1000
1073 terminator required terminator
1075 Returns: the value, or -1 on error
1079 readconf_readfixed(uschar *s, int terminator)
1083 if (!isdigit(*s)) return -1;
1084 (void)sscanf(CS s, "%d%n", &value, &count);
1086 yield = value * 1000;
1090 while (isdigit((*(++s))))
1092 yield += (*s - '0') * m;
1097 return (*s == terminator)? yield : (-1);
1102 /*************************************************
1103 * Find option in list *
1104 *************************************************/
1106 /* The lists are always in order, so binary chop can be used.
1109 name the option name to search for
1110 ol the first entry in the option list
1111 last one more than the offset of the last entry in the option list
1113 Returns: pointer to an option entry, or NULL if not found
1117 find_option(uschar *name, optionlist *ol, int last)
1120 while (last > first)
1122 int middle = (first + last)/2;
1123 int c = Ustrcmp(name, ol[middle].name);
1124 if (c == 0) return ol + middle;
1125 else if (c > 0) first = middle + 1;
1133 /*************************************************
1134 * Find a set flag in option list *
1135 *************************************************/
1137 /* Because some versions of Unix make no restrictions on the values of uids and
1138 gids (even negative ones), we cannot represent "unset" by a special value.
1139 There is therefore a separate boolean variable for each one indicating whether
1140 a value is set or not. This function returns a pointer to the boolean, given
1141 the original option name. It is a major disaster if the flag cannot be found.
1144 name the name of the uid or gid option
1145 oltop points to the start of the relevant option list
1146 last one more than the offset of the last item in the option list
1147 data_block NULL when reading main options => data values in the option
1148 list are absolute addresses; otherwise they are byte offsets
1149 in data_block (used for driver options)
1151 Returns: a pointer to the boolean flag.
1155 get_set_flag(uschar *name, optionlist *oltop, int last, void *data_block)
1159 sprintf(CS name2, "*set_%.50s", name);
1160 ol = find_option(name2, oltop, last);
1161 if (ol == NULL) log_write(0, LOG_MAIN|LOG_PANIC_DIE,
1162 "Exim internal error: missing set flag for %s", name);
1163 return (data_block == NULL)? (BOOL *)(ol->value) :
1164 (BOOL *)((uschar *)data_block + (long int)(ol->value));
1170 /*************************************************
1171 * Output extra characters message and die *
1172 *************************************************/
1174 /* Called when an option line has junk on the end. Sometimes this is because
1175 the sysadmin thinks comments are permitted.
1178 s points to the extra characters
1179 t1..t3 strings to insert in the log message
1181 Returns: doesn't return; dies
1185 extra_chars_error(uschar *s, uschar *t1, uschar *t2, uschar *t3)
1187 uschar *comment = US"";
1188 if (*s == '#') comment = US" (# is comment only at line start)";
1189 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1190 "extra characters follow %s%s%s%s", t1, t2, t3, comment);
1195 /*************************************************
1196 * Read rewrite information *
1197 *************************************************/
1199 /* Each line of rewrite information contains:
1201 . A complete address in the form user@domain, possibly with
1202 leading * for each part; or alternatively, a regex.
1204 . A replacement string (which will be expanded).
1206 . An optional sequence of one-letter flags, indicating which
1207 headers etc. to apply this rule to.
1209 All this is decoded and placed into a control block. The OR of the flags is
1210 maintained in a common word.
1213 p points to the string that makes up the rule
1214 existflags points to the overall flag word
1215 isglobal TRUE if reading global rewrite rules
1217 Returns: the control block for the parsed rule.
1220 static rewrite_rule *
1221 readconf_one_rewrite(uschar *p, int *existflags, BOOL isglobal)
1223 rewrite_rule *next = store_get(sizeof(rewrite_rule));
1226 next->key = string_dequote(&p);
1228 while (isspace(*p)) p++;
1230 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1231 "missing rewrite replacement string");
1234 next->replacement = string_dequote(&p);
1236 while (*p != 0) switch (*p++)
1238 case ' ': case '\t': break;
1240 case 'q': next->flags |= rewrite_quit; break;
1241 case 'w': next->flags |= rewrite_whole; break;
1243 case 'h': next->flags |= rewrite_all_headers; break;
1244 case 's': next->flags |= rewrite_sender; break;
1245 case 'f': next->flags |= rewrite_from; break;
1246 case 't': next->flags |= rewrite_to; break;
1247 case 'c': next->flags |= rewrite_cc; break;
1248 case 'b': next->flags |= rewrite_bcc; break;
1249 case 'r': next->flags |= rewrite_replyto; break;
1251 case 'E': next->flags |= rewrite_all_envelope; break;
1252 case 'F': next->flags |= rewrite_envfrom; break;
1253 case 'T': next->flags |= rewrite_envto; break;
1255 case 'Q': next->flags |= rewrite_qualify; break;
1256 case 'R': next->flags |= rewrite_repeat; break;
1259 next->flags |= rewrite_smtp;
1260 if (next->key[0] != '^' && Ustrncmp(next->key, "\\N^", 3) != 0)
1261 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1262 "rewrite rule has the S flag but is not a regular expression");
1266 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1267 "unknown rewrite flag character '%c' "
1268 "(could be missing quotes round replacement item)", p[-1]);
1272 /* If no action flags are set, set all the "normal" rewrites. */
1274 if ((next->flags & (rewrite_all | rewrite_smtp)) == 0)
1275 next->flags |= isglobal? rewrite_all : rewrite_all_headers;
1277 /* Remember which exist, for optimization, and return the rule */
1279 *existflags |= next->flags;
1286 /*************************************************
1287 * Read global rewrite information *
1288 *************************************************/
1290 /* Each line is a single rewrite rule; it is parsed into a control block
1291 by readconf_one_rewrite(), and its flags are ORed into the global flag
1292 word rewrite_existflags. */
1295 readconf_rewrites(void)
1297 rewrite_rule **chain = &global_rewrite_rules;
1300 while ((p = get_config_line()) != NULL)
1302 rewrite_rule *next = readconf_one_rewrite(p, &rewrite_existflags, TRUE);
1304 chain = &(next->next);
1310 /*************************************************
1312 *************************************************/
1314 /* Strings are read into the normal store pool. As long we aren't too
1315 near the end of the current block, the string will just use what is necessary
1316 on the top of the stacking pool, because string_cat() uses the extension
1320 s the rest of the input line
1321 name the option name (for errors)
1323 Returns: pointer to the string
1327 read_string(uschar *s, uschar *name)
1332 if (*s != '\"') return string_copy(s);
1335 yield = string_dequote(&s);
1337 if (s == ss+1 || s[-1] != '\"')
1338 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1339 "missing quote at end of string value for %s", name);
1341 if (*s != 0) extra_chars_error(s, US"string value for ", name, US"");
1347 /*************************************************
1348 * Handle option line *
1349 *************************************************/
1351 /* This function is called from several places to process a line containing the
1352 setting of an option. The first argument is the line to be decoded; it has been
1353 checked not to be empty and not to start with '#'. Trailing newlines and white
1354 space have been removed. The second argument is a pointer to the list of
1355 variable names that are to be recognized, together with their types and
1356 locations, and the third argument gives the number of entries in the list.
1358 The fourth argument is a pointer to a data block. If it is NULL, then the data
1359 values in the options list are absolute addresses. Otherwise, they are byte
1360 offsets in the data block.
1362 String option data may continue onto several lines; this function reads further
1363 data from config_file if necessary.
1365 The yield of this function is normally zero. If a string continues onto
1366 multiple lines, then the data value is permitted to be followed by a comma
1367 or a semicolon (for use in drivers) and the yield is that character.
1370 buffer contains the configuration line to be handled
1371 oltop points to the start of the relevant option list
1372 last one more than the offset of the last item in the option list
1373 data_block NULL when reading main options => data values in the option
1374 list are absolute addresses; otherwise they are byte offsets
1375 in data_block when they have opt_public set; otherwise
1376 they are byte offsets in data_block->options_block.
1377 unknown_txt format string to use in panic message for unknown option;
1378 must contain %s for option name
1379 if given as NULL, don't panic on unknown option
1381 Returns: TRUE if an option was read successfully,
1382 FALSE false for an unknown option if unknown_txt == NULL,
1383 otherwise panic and die on an unknown option
1387 readconf_handle_option(uschar *buffer, optionlist *oltop, int last,
1388 void *data_block, uschar *unknown_txt)
1392 int n, count, type, value;
1396 BOOL boolvalue = TRUE;
1397 BOOL freesptr = TRUE;
1398 optionlist *ol, *ol2;
1402 uschar *inttype = US"";
1405 uschar *saved_condition, *strtemp;
1406 uschar **str_target;
1410 /* There may be leading spaces; thereafter, we expect an option name starting
1413 while (isspace(*s)) s++;
1415 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "option setting expected: %s", s);
1417 /* Read the name of the option, and skip any subsequent white space. If
1418 it turns out that what we read was "hide", set the flag indicating that
1419 this is a secure option, and loop to read the next word. */
1421 for (n = 0; n < 2; n++)
1423 while (isalnum(*s) || *s == '_')
1425 if (ptr < sizeof(name)-1) name[ptr++] = *s;
1429 while (isspace(*s)) s++;
1430 if (Ustrcmp(name, "hide") != 0) break;
1431 issecure = opt_secure;
1435 /* Deal with "no_" or "not_" here for booleans */
1437 if (Ustrncmp(name, "no_", 3) == 0)
1443 if (Ustrncmp(name, "not_", 4) == 0)
1449 /* Search the list for the given name. A non-existent name, or an option that
1450 is set twice, is a disaster. */
1452 ol = find_option(name + offset, oltop, last);
1456 if (unknown_txt == NULL) return FALSE;
1457 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, CS unknown_txt, name);
1460 if ((ol->type & opt_set) && !(ol->type & (opt_rep_con | opt_rep_str)))
1461 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1462 "\"%s\" option set for the second time", name);
1464 ol->type |= opt_set | issecure;
1465 type = ol->type & opt_mask;
1467 /* Types with data values must be followed by '='; the "no[t]_" prefix
1468 applies only to boolean values. */
1470 if (type < opt_bool || type > opt_bool_last)
1473 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1474 "negation prefix applied to a non-boolean option");
1476 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1477 "unexpected end of line (data missing) after %s", name);
1479 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "missing \"=\" after %s", name);
1482 /* If a boolean wasn't preceded by "no[t]_" it can be followed by = and
1483 true/false/yes/no, or, in the case of opt_expanded_bool, a general string that
1484 ultimately expands to one of those values. */
1486 else if (*s != 0 && (offset != 0 || *s != '='))
1487 extra_chars_error(s, US"boolean option ", name, US"");
1489 /* Skip white space after = */
1491 if (*s == '=') while (isspace((*(++s))));
1493 /* If there is a data block and the opt_public flag is not set, change
1494 the data block pointer to the private options block. */
1496 if (data_block != NULL && (ol->type & opt_public) == 0)
1497 data_block = (void *)(((driver_instance *)data_block)->options_block);
1499 /* Now get the data according to the type. */
1503 /* If a string value is not enclosed in quotes, it consists of
1504 the rest of the current line, verbatim. Otherwise, string escapes
1507 A transport is specified as a string, which is then looked up in the
1508 list of transports. A search type is specified as one of a number of
1511 A set or rewrite rules for a driver is specified as a string, which is
1512 then parsed into a suitable chain of control blocks.
1514 Uids and gids are specified as strings which are then looked up in the
1515 passwd file. Lists of uids and gids are similarly specified as colon-
1516 separated strings. */
1521 case opt_expand_uid:
1522 case opt_expand_gid:
1527 reset_point = sptr = read_string(s, name);
1529 /* Having read a string, we now have several different ways of using it,
1530 depending on the data type, so do another switch. If keeping the actual
1531 string is not required (because it is interpreted), freesptr is set TRUE,
1532 and at the end we reset the pool. */
1536 /* If this was a string, set the variable to point to the new string,
1537 and set the flag so its store isn't reclaimed. If it was a list of rewrite
1538 rules, we still keep the string (for printing), and parse the rules into a
1539 control block and flags word. */
1542 if (data_block == NULL)
1543 str_target = (uschar **)(ol->value);
1545 str_target = (uschar **)((uschar *)data_block + (long int)(ol->value));
1546 if (ol->type & opt_rep_con)
1548 /* We already have a condition, we're conducting a crude hack to let
1549 multiple condition rules be chained together, despite storing them in
1551 saved_condition = *str_target;
1552 strtemp = string_sprintf("${if and{{bool_lax{%s}}{bool_lax{%s}}}}",
1553 saved_condition, sptr);
1554 *str_target = string_copy_malloc(strtemp);
1555 /* TODO(pdp): there is a memory leak here and just below
1556 when we set 3 or more conditions; I still don't
1557 understand the store mechanism enough to know
1558 what's the safe way to free content from an earlier store.
1559 AFAICT, stores stack, so freeing an early stored item also stores
1560 all data alloc'd after it. If we knew conditions were adjacent,
1561 we could survive that, but we don't. So I *think* we need to take
1562 another bit from opt_type to indicate "malloced"; this seems like
1563 quite a hack, especially for this one case. It also means that
1564 we can't ever reclaim the store from the *first* condition.
1566 Because we only do this once, near process start-up, I'm prepared to
1567 let this slide for the time being, even though it rankles. */
1569 else if (ol->type & opt_rep_str)
1571 uschar sep = Ustrncmp(name, "headers_add", 11)==0 ? '\n' : ':';
1574 /* Strip trailing whitespace and seperators */
1575 for (cp = sptr + Ustrlen(sptr) - 1;
1576 cp >= sptr && (*cp == '\n' || *cp == '\t' || *cp == ' ' || *cp == sep);
1580 *str_target = string_copy_malloc(
1581 *str_target ? string_sprintf("%s%c%s", *str_target, sep, sptr)
1592 if (data_block == NULL)
1593 *((uschar **)(ol->value)) = sptr;
1595 *((uschar **)((uschar *)data_block + (long int)(ol->value))) = sptr;
1597 if (type == opt_rewrite)
1602 rewrite_rule **chain;
1605 sprintf(CS name2, "*%.50s_rules", name);
1606 ol2 = find_option(name2, oltop, last);
1607 sprintf(CS name2, "*%.50s_flags", name);
1608 ol3 = find_option(name2, oltop, last);
1610 if (ol2 == NULL || ol3 == NULL)
1611 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1612 "rewrite rules not available for driver");
1614 if (data_block == NULL)
1616 chain = (rewrite_rule **)(ol2->value);
1617 flagptr = (int *)(ol3->value);
1621 chain = (rewrite_rule **)((uschar *)data_block + (long int)(ol2->value));
1622 flagptr = (int *)((uschar *)data_block + (long int)(ol3->value));
1625 while ((p = string_nextinlist(&sptr, &sep, big_buffer, BIG_BUFFER_SIZE))
1628 rewrite_rule *next = readconf_one_rewrite(p, flagptr, FALSE);
1630 chain = &(next->next);
1633 if ((*flagptr & (rewrite_all_envelope | rewrite_smtp)) != 0)
1634 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "rewrite rule specifies a "
1635 "non-header rewrite - not allowed at transport time -");
1639 /* If it was an expanded uid, see if there is any expansion to be
1640 done by checking for the presence of a $ character. If there is, save it
1641 in the corresponding *expand_user option field. Otherwise, fall through
1642 to treat it as a fixed uid. Ensure mutual exclusivity of the two kinds
1645 case opt_expand_uid:
1646 sprintf(CS name2, "*expand_%.50s", name);
1647 ol2 = find_option(name2, oltop, last);
1650 uschar *ss = (Ustrchr(sptr, '$') != NULL)? sptr : NULL;
1652 if (data_block == NULL)
1653 *((uschar **)(ol2->value)) = ss;
1655 *((uschar **)((uschar *)data_block + (long int)(ol2->value))) = ss;
1659 *(get_set_flag(name, oltop, last, data_block)) = FALSE;
1665 /* Look up a fixed uid, and also make use of the corresponding gid
1666 if a passwd entry is returned and the gid has not been set. */
1669 if (!route_finduser(sptr, &pw, &uid))
1670 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "user %s was not found", sptr);
1671 if (data_block == NULL)
1672 *((uid_t *)(ol->value)) = uid;
1674 *((uid_t *)((uschar *)data_block + (long int)(ol->value))) = uid;
1676 /* Set the flag indicating a fixed value is set */
1678 *(get_set_flag(name, oltop, last, data_block)) = TRUE;
1680 /* Handle matching gid if we have a passwd entry: done by finding the
1681 same name with terminating "user" changed to "group"; if not found,
1682 ignore. Also ignore if the value is already set. */
1684 if (pw == NULL) break;
1685 Ustrcpy(name+Ustrlen(name)-4, "group");
1686 ol2 = find_option(name, oltop, last);
1687 if (ol2 != NULL && ((ol2->type & opt_mask) == opt_gid ||
1688 (ol2->type & opt_mask) == opt_expand_gid))
1690 BOOL *set_flag = get_set_flag(name, oltop, last, data_block);
1693 if (data_block == NULL)
1694 *((gid_t *)(ol2->value)) = pw->pw_gid;
1696 *((gid_t *)((uschar *)data_block + (long int)(ol2->value))) = pw->pw_gid;
1702 /* If it was an expanded gid, see if there is any expansion to be
1703 done by checking for the presence of a $ character. If there is, save it
1704 in the corresponding *expand_user option field. Otherwise, fall through
1705 to treat it as a fixed gid. Ensure mutual exclusivity of the two kinds
1708 case opt_expand_gid:
1709 sprintf(CS name2, "*expand_%.50s", name);
1710 ol2 = find_option(name2, oltop, last);
1713 uschar *ss = (Ustrchr(sptr, '$') != NULL)? sptr : NULL;
1715 if (data_block == NULL)
1716 *((uschar **)(ol2->value)) = ss;
1718 *((uschar **)((uschar *)data_block + (long int)(ol2->value))) = ss;
1722 *(get_set_flag(name, oltop, last, data_block)) = FALSE;
1728 /* Handle freestanding gid */
1731 if (!route_findgroup(sptr, &gid))
1732 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "group %s was not found", sptr);
1733 if (data_block == NULL)
1734 *((gid_t *)(ol->value)) = gid;
1736 *((gid_t *)((uschar *)data_block + (long int)(ol->value))) = gid;
1737 *(get_set_flag(name, oltop, last, data_block)) = TRUE;
1740 /* If it was a uid list, look up each individual entry, and build
1741 a vector of uids, with a count in the first element. Put the vector
1742 in malloc store so we can free the string. (We are reading into
1743 permanent store already.) */
1751 uschar *op = expand_string (sptr);
1754 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "failed to expand %s: %s",
1755 name, expand_string_message);
1758 if (*p != 0) count++;
1759 while (*p != 0) if (*p++ == ':' && *p != 0) count++;
1760 list = store_malloc(count*sizeof(uid_t));
1761 list[ptr++] = (uid_t)(count - 1);
1763 if (data_block == NULL)
1764 *((uid_t **)(ol->value)) = list;
1766 *((uid_t **)((uschar *)data_block + (long int)(ol->value))) = list;
1772 (void)string_nextinlist(&p, &sep, big_buffer, BIG_BUFFER_SIZE);
1773 if (!route_finduser(big_buffer, NULL, &uid))
1774 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "user %s was not found",
1781 /* If it was a gid list, look up each individual entry, and build
1782 a vector of gids, with a count in the first element. Put the vector
1783 in malloc store so we can free the string. (We are reading into permanent
1792 uschar *op = expand_string (sptr);
1795 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "failed to expand %s: %s",
1796 name, expand_string_message);
1799 if (*p != 0) count++;
1800 while (*p != 0) if (*p++ == ':' && *p != 0) count++;
1801 list = store_malloc(count*sizeof(gid_t));
1802 list[ptr++] = (gid_t)(count - 1);
1804 if (data_block == NULL)
1805 *((gid_t **)(ol->value)) = list;
1807 *((gid_t **)((uschar *)data_block + (long int)(ol->value))) = list;
1813 (void)string_nextinlist(&p, &sep, big_buffer, BIG_BUFFER_SIZE);
1814 if (!route_findgroup(big_buffer, &gid))
1815 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "group %s was not found",
1823 /* Release store if the value of the string doesn't need to be kept. */
1825 if (freesptr) store_reset(reset_point);
1828 /* Expanded boolean: if no characters follow, or if there are no dollar
1829 characters, this is a fixed-valued boolean, and we fall through. Otherwise,
1830 save the string for later expansion in the alternate place. */
1832 case opt_expand_bool:
1833 if (*s != 0 && Ustrchr(s, '$') != 0)
1835 sprintf(CS name2, "*expand_%.50s", name);
1836 ol2 = find_option(name2, oltop, last);
1839 reset_point = sptr = read_string(s, name);
1840 if (data_block == NULL)
1841 *((uschar **)(ol2->value)) = sptr;
1843 *((uschar **)((uschar *)data_block + (long int)(ol2->value))) = sptr;
1850 /* Boolean: if no characters follow, the value is boolvalue. Otherwise
1851 look for yes/not/true/false. Some booleans are stored in a single bit in
1852 a single int. There's a special fudge for verify settings; without a suffix
1853 they set both xx_sender and xx_recipient. The table points to the sender
1854 value; search subsequently for the recipient. There's another special case:
1855 opt_bool_set also notes when a boolean has been set. */
1859 case opt_bool_verify:
1863 s = readconf_readname(name2, 64, s);
1864 if (strcmpic(name2, US"true") == 0 || strcmpic(name2, US"yes") == 0)
1866 else if (strcmpic(name2, US"false") == 0 || strcmpic(name2, US"no") == 0)
1868 else log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1869 "\"%s\" is not a valid value for the \"%s\" option", name2, name);
1870 if (*s != 0) extra_chars_error(s, string_sprintf("\"%s\" ", name2),
1871 US"for boolean option ", name);
1874 /* Handle single-bit type. */
1876 if (type == opt_bit)
1878 int bit = 1 << ((ol->type >> 16) & 31);
1879 int *ptr = (data_block == NULL)?
1880 (int *)(ol->value) :
1881 (int *)((uschar *)data_block + (long int)ol->value);
1882 if (boolvalue) *ptr |= bit; else *ptr &= ~bit;
1886 /* Handle full BOOL types */
1888 if (data_block == NULL)
1889 *((BOOL *)(ol->value)) = boolvalue;
1891 *((BOOL *)((uschar *)data_block + (long int)(ol->value))) = boolvalue;
1895 if (type == opt_bool_verify)
1897 sprintf(CS name2, "%.50s_recipient", name + offset);
1898 ol2 = find_option(name2, oltop, last);
1901 if (data_block == NULL)
1902 *((BOOL *)(ol2->value)) = boolvalue;
1904 *((BOOL *)((uschar *)data_block + (long int)(ol2->value))) = boolvalue;
1908 /* Note that opt_bool_set type is set, if there is somewhere to do so */
1910 else if (type == opt_bool_set)
1912 sprintf(CS name2, "*set_%.50s", name + offset);
1913 ol2 = find_option(name2, oltop, last);
1916 if (data_block == NULL)
1917 *((BOOL *)(ol2->value)) = TRUE;
1919 *((BOOL *)((uschar *)data_block + (long int)(ol2->value))) = TRUE;
1928 inttype = US"octal ";
1930 /* Integer: a simple(ish) case; allow octal and hex formats, and
1931 suffixes K and M. The different types affect output, not input. */
1940 lvalue = strtol(CS s, CSS &endptr, intbase);
1943 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "%sinteger expected for %s",
1946 if (errno != ERANGE)
1948 if (tolower(*endptr) == 'k')
1950 if (lvalue > INT_MAX/1024 || lvalue < INT_MIN/1024) errno = ERANGE;
1951 else lvalue *= 1024;
1954 else if (tolower(*endptr) == 'm')
1956 if (lvalue > INT_MAX/(1024*1024) || lvalue < INT_MIN/(1024*1024))
1958 else lvalue *= 1024*1024;
1963 if (errno == ERANGE || lvalue > INT_MAX || lvalue < INT_MIN)
1964 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1965 "absolute value of integer \"%s\" is too large (overflow)", s);
1967 while (isspace(*endptr)) endptr++;
1969 extra_chars_error(endptr, inttype, US"integer value for ", name);
1971 value = (int)lvalue;
1974 if (data_block == NULL)
1975 *((int *)(ol->value)) = value;
1977 *((int *)((uschar *)data_block + (long int)(ol->value))) = value;
1980 /* Integer held in K: again, allow octal and hex formats, and suffixes K and
1987 value = strtol(CS s, CSS &endptr, intbase);
1990 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "%sinteger expected for %s",
1993 if (errno != ERANGE)
1995 if (tolower(*endptr) == 'm')
1997 if (value > INT_MAX/1024 || value < INT_MIN/1024) errno = ERANGE;
2001 else if (tolower(*endptr) == 'k')
2007 value = (value + 512)/1024;
2011 if (errno == ERANGE) log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
2012 "absolute value of integer \"%s\" is too large (overflow)", s);
2014 while (isspace(*endptr)) endptr++;
2016 extra_chars_error(endptr, inttype, US"integer value for ", name);
2019 if (data_block == NULL)
2020 *((int *)(ol->value)) = value;
2022 *((int *)((uschar *)data_block + (long int)(ol->value))) = value;
2025 /* Fixed-point number: held to 3 decimal places. */
2028 if (sscanf(CS s, "%d%n", &value, &count) != 1)
2029 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
2030 "fixed-point number expected for %s", name);
2032 if (value < 0) log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
2033 "integer \"%s\" is too large (overflow)", s);
2037 if (value < 0) log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
2038 "integer \"%s\" is too large (overflow)", s);
2040 if (s[count] == '.')
2043 while (isdigit(s[++count]))
2045 value += (s[count] - '0') * d;
2050 while (isspace(s[count])) count++;
2053 extra_chars_error(s+count, US"fixed-point value for ", name, US"");
2055 if (data_block == NULL)
2056 *((int *)(ol->value)) = value;
2058 *((int *)((uschar *)data_block + (long int)(ol->value))) = value;
2061 /* There's a special routine to read time values. */
2064 value = readconf_readtime(s, 0, FALSE);
2066 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "invalid time value for %s",
2068 if (data_block == NULL)
2069 *((int *)(ol->value)) = value;
2071 *((int *)((uschar *)data_block + (long int)(ol->value))) = value;
2074 /* A time list is a list of colon-separated times, with the first
2075 element holding the size of the list and the second the number of
2081 int *list = (data_block == NULL)?
2082 (int *)(ol->value) :
2083 (int *)((uschar *)data_block + (long int)(ol->value));
2085 if (*s != 0) for (count = 1; count <= list[0] - 2; count++)
2088 uschar *snext = Ustrchr(s, ':');
2092 while (ss > s && isspace(ss[-1])) ss--;
2095 value = readconf_readtime(s, terminator, FALSE);
2097 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "invalid time value for %s",
2099 if (count > 1 && value <= list[count])
2100 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
2101 "time value out of order for %s", name);
2102 list[count+1] = value;
2103 if (snext == NULL) break;
2105 while (isspace(*s)) s++;
2108 if (count > list[0] - 2)
2109 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "too many time values for %s",
2111 if (count > 0 && list[2] == 0) count = 0;
2123 /*************************************************
2124 * Print a time value *
2125 *************************************************/
2128 Argument: a time value in seconds
2129 Returns: pointer to a fixed buffer containing the time as a string,
2130 in readconf_readtime() format
2134 readconf_printtime(int t)
2137 uschar *p = time_buffer;
2154 if (w > 0) { sprintf(CS p, "%dw", w); while (*p) p++; }
2155 if (d > 0) { sprintf(CS p, "%dd", d); while (*p) p++; }
2156 if (h > 0) { sprintf(CS p, "%dh", h); while (*p) p++; }
2157 if (m > 0) { sprintf(CS p, "%dm", m); while (*p) p++; }
2158 if (s > 0 || p == time_buffer) sprintf(CS p, "%ds", s);
2165 /*************************************************
2166 * Print an individual option value *
2167 *************************************************/
2169 /* This is used by the -bP option, so prints to the standard output.
2170 The entire options list is passed in as an argument, because some options come
2171 in pairs - typically uid/gid settings, which can either be explicit numerical
2172 values, or strings to be expanded later. If the numerical value is unset,
2173 search for "*expand_<name>" to see if there is a string equivalent.
2176 ol option entry, or NULL for an unknown option
2178 options_block NULL for main configuration options; otherwise points to
2179 a driver block; if the option doesn't have opt_public
2180 set, then options_block->options_block is where the item
2182 oltop points to the option list in which ol exists
2183 last one more than the offset of the last entry in optop
2184 no_labels do not show "foo = " at the start.
2190 print_ol(optionlist *ol, uschar *name, void *options_block,
2191 optionlist *oltop, int last, BOOL no_labels)
2204 printf("%s is not a known option\n", name);
2208 /* Non-admin callers cannot see options that have been flagged secure by the
2211 if (!admin_user && (ol->type & opt_secure) != 0)
2213 const char * const hidden = "<value not displayable>";
2215 printf("%s\n", hidden);
2217 printf("%s = %s\n", name, hidden);
2221 /* Else show the value of the option */
2224 if (options_block != NULL)
2226 if ((ol->type & opt_public) == 0)
2227 options_block = (void *)(((driver_instance *)options_block)->options_block);
2228 value = (void *)((uschar *)options_block + (long int)value);
2231 switch(ol->type & opt_mask)
2234 case opt_rewrite: /* Show the text value */
2235 s = *((uschar **)value);
2236 if (!no_labels) printf("%s = ", name);
2237 printf("%s\n", (s == NULL)? US"" : string_printing2(s, FALSE));
2241 if (!no_labels) printf("%s = ", name);
2242 printf("%d\n", *((int *)value));
2247 int x = *((int *)value);
2248 if (x != 0 && (x & 1023) == 0)
2252 if ((x & 1023) == 0)
2257 if (!no_labels) printf("%s = ", name);
2258 printf("%d%c\n", x, c);
2262 if (!no_labels) printf("%s = ", name);
2270 int x = *((int *)value);
2271 if (!no_labels) printf("%s = ", name);
2272 if (x == 0) printf("0\n");
2273 else if ((x & 1023) == 0) printf("%dM\n", x >> 10);
2274 else printf("%dK\n", x);
2279 if (!no_labels) printf("%s = ", name);
2280 printf("%#o\n", *((int *)value));
2283 /* Can be negative only when "unset", in which case integer */
2287 int x = *((int *)value);
2290 if (x < 0) printf("%s =\n", name); else
2292 if (!no_labels) printf("%s = ", name);
2293 printf("%d.", x/1000);
2306 /* If the numerical value is unset, try for the string value */
2308 case opt_expand_uid:
2309 if (! *get_set_flag(name, oltop, last, options_block))
2311 sprintf(CS name2, "*expand_%.50s", name);
2312 ol2 = find_option(name2, oltop, last);
2315 void *value2 = ol2->value;
2316 if (options_block != NULL)
2317 value2 = (void *)((uschar *)options_block + (long int)value2);
2318 s = *((uschar **)value2);
2319 if (!no_labels) printf("%s = ", name);
2320 printf("%s\n", (s == NULL)? US"" : string_printing(s));
2325 /* Else fall through */
2328 if (!no_labels) printf("%s = ", name);
2329 if (! *get_set_flag(name, oltop, last, options_block))
2333 pw = getpwuid(*((uid_t *)value));
2335 printf("%ld\n", (long int)(*((uid_t *)value)));
2336 else printf("%s\n", pw->pw_name);
2340 /* If the numerical value is unset, try for the string value */
2342 case opt_expand_gid:
2343 if (! *get_set_flag(name, oltop, last, options_block))
2345 sprintf(CS name2, "*expand_%.50s", name);
2346 ol2 = find_option(name2, oltop, last);
2347 if (ol2 != NULL && (ol2->type & opt_mask) == opt_stringptr)
2349 void *value2 = ol2->value;
2350 if (options_block != NULL)
2351 value2 = (void *)((uschar *)options_block + (long int)value2);
2352 s = *((uschar **)value2);
2353 if (!no_labels) printf("%s = ", name);
2354 printf("%s\n", (s == NULL)? US"" : string_printing(s));
2359 /* Else fall through */
2362 if (!no_labels) printf("%s = ", name);
2363 if (! *get_set_flag(name, oltop, last, options_block))
2367 gr = getgrgid(*((int *)value));
2369 printf("%ld\n", (long int)(*((int *)value)));
2370 else printf("%s\n", gr->gr_name);
2375 uidlist = *((uid_t **)value);
2376 if (!no_labels) printf("%s =", name);
2377 if (uidlist != NULL)
2381 if (no_labels) sep = '\0';
2382 for (i = 1; i <= (int)(uidlist[0]); i++)
2384 uschar *name = NULL;
2385 pw = getpwuid(uidlist[i]);
2386 if (pw != NULL) name = US pw->pw_name;
2387 if (sep != '\0') printf("%c", sep);
2388 if (name != NULL) printf("%s", name);
2389 else printf("%ld", (long int)(uidlist[i]));
2397 gidlist = *((gid_t **)value);
2398 if (!no_labels) printf("%s =", name);
2399 if (gidlist != NULL)
2403 if (no_labels) sep = '\0';
2404 for (i = 1; i <= (int)(gidlist[0]); i++)
2406 uschar *name = NULL;
2407 gr = getgrgid(gidlist[i]);
2408 if (gr != NULL) name = US gr->gr_name;
2409 if (sep != '\0') printf("%c", sep);
2410 if (name != NULL) printf("%s", name);
2411 else printf("%ld", (long int)(gidlist[i]));
2419 if (!no_labels) printf("%s = ", name);
2420 printf("%s\n", readconf_printtime(*((int *)value)));
2426 int *list = (int *)value;
2427 if (!no_labels) printf("%s = ", name);
2428 for (i = 0; i < list[1]; i++)
2429 printf("%s%s", (i == 0)? "" : ":", readconf_printtime(list[i+2]));
2435 printf("%s%s\n", ((*((int *)value)) & (1 << ((ol->type >> 16) & 31)))?
2439 case opt_expand_bool:
2440 sprintf(CS name2, "*expand_%.50s", name);
2441 ol2 = find_option(name2, oltop, last);
2442 if (ol2 != NULL && ol2->value != NULL)
2444 void *value2 = ol2->value;
2445 if (options_block != NULL)
2446 value2 = (void *)((uschar *)options_block + (long int)value2);
2447 s = *((uschar **)value2);
2450 if (!no_labels) printf("%s = ", name);
2451 printf("%s\n", string_printing(s));
2454 /* s == NULL => string not set; fall through */
2460 case opt_bool_verify:
2462 printf("%s%s\n", (*((BOOL *)value))? "" : "no_", name);
2469 /*************************************************
2470 * Print value from main configuration *
2471 *************************************************/
2473 /* This function, called as a result of encountering the -bP option,
2474 causes the value of any main configuration variable to be output if the
2475 second argument is NULL. There are some special values:
2477 all print all main configuration options
2478 configure_file print the name of the configuration file
2479 routers print the routers' configurations
2480 transports print the transports' configuration
2481 authenticators print the authenticators' configuration
2482 macros print the macros' configuration
2483 router_list print a list of router names
2484 transport_list print a list of transport names
2485 authenticator_list print a list of authentication mechanism names
2486 macro_list print a list of macro names
2487 +name print a named list item
2488 local_scan print the local_scan options
2490 If the second argument is not NULL, it must be one of "router", "transport",
2491 "authenticator" or "macro" in which case the first argument identifies the
2492 driver whose options are to be printed.
2495 name option name if type == NULL; else driver name
2496 type NULL or driver type name, as described above
2497 no_labels avoid the "foo = " at the start of an item
2503 readconf_print(uschar *name, uschar *type, BOOL no_labels)
2505 BOOL names_only = FALSE;
2507 optionlist *ol2 = NULL;
2508 driver_instance *d = NULL;
2519 static uschar *types[] = { US"address", US"domain", US"host",
2521 static tree_node **anchors[] = { &addresslist_anchor, &domainlist_anchor,
2522 &hostlist_anchor, &localpartlist_anchor };
2524 for (i = 0; i < 4; i++)
2526 t = tree_search(*(anchors[i]), name+1);
2531 printf("%s\n", ((namedlist_block *)(t->data.ptr))->string);
2533 printf("%slist %s = %s\n", types[i], name+1,
2534 ((namedlist_block *)(t->data.ptr))->string);
2539 printf("no address, domain, host, or local part list called \"%s\" "
2540 "exists\n", name+1);
2545 if (Ustrcmp(name, "configure_file") == 0)
2547 printf("%s\n", CS config_main_filename);
2551 if (Ustrcmp(name, "all") == 0)
2553 for (ol = optionlist_config;
2554 ol < optionlist_config + optionlist_config_size; ol++)
2556 if ((ol->type & opt_hidden) == 0)
2557 print_ol(ol, US ol->name, NULL,
2558 optionlist_config, optionlist_config_size,
2564 if (Ustrcmp(name, "local_scan") == 0)
2566 #ifndef LOCAL_SCAN_HAS_OPTIONS
2567 printf("local_scan() options are not supported\n");
2569 for (ol = local_scan_options;
2570 ol < local_scan_options + local_scan_options_count; ol++)
2572 print_ol(ol, US ol->name, NULL, local_scan_options,
2573 local_scan_options_count, no_labels);
2579 if (Ustrcmp(name, "routers") == 0)
2584 else if (Ustrcmp(name, "transports") == 0)
2586 type = US"transport";
2590 else if (Ustrcmp(name, "authenticators") == 0)
2592 type = US"authenticator";
2596 else if (Ustrcmp(name, "macros") == 0)
2602 else if (Ustrcmp(name, "router_list") == 0)
2609 else if (Ustrcmp(name, "transport_list") == 0)
2611 type = US"transport";
2616 else if (Ustrcmp(name, "authenticator_list") == 0)
2618 type = US"authenticator";
2623 else if (Ustrcmp(name, "macro_list") == 0)
2632 print_ol(find_option(name, optionlist_config, optionlist_config_size),
2633 name, NULL, optionlist_config, optionlist_config_size, no_labels);
2638 /* Handle the options for a router or transport. Skip options that are flagged
2639 as hidden. Some of these are options with names starting with '*', used for
2640 internal alternative representations of other options (which the printing
2641 function will sort out). Others are synonyms kept for backward compatibility.
2644 if (Ustrcmp(type, "router") == 0)
2646 d = (driver_instance *)routers;
2647 ol2 = optionlist_routers;
2648 size = optionlist_routers_size;
2650 else if (Ustrcmp(type, "transport") == 0)
2652 d = (driver_instance *)transports;
2653 ol2 = optionlist_transports;
2654 size = optionlist_transports_size;
2656 else if (Ustrcmp(type, "authenticator") == 0)
2658 d = (driver_instance *)auths;
2659 ol2 = optionlist_auths;
2660 size = optionlist_auths_size;
2663 else if (Ustrcmp(type, "macro") == 0)
2665 /* People store passwords in macros and they were previously not available
2666 for printing. So we have an admin_users restriction. */
2669 fprintf(stderr, "exim: permission denied\n");
2672 for (m = macros; m != NULL; m = m->next)
2674 if (name == NULL || Ustrcmp(name, m->name) == 0)
2677 printf("%s\n", CS m->name);
2679 printf("%s=%s\n", CS m->name, CS m->replacement);
2685 printf("%s %s not found\n", type, name);
2691 for (; d != NULL; d = d->next) printf("%s\n", CS d->name);
2695 /* Either search for a given driver, or print all of them */
2697 for (; d != NULL; d = d->next)
2700 printf("\n%s %s:\n", d->name, type);
2701 else if (Ustrcmp(d->name, name) != 0) continue;
2703 for (ol = ol2; ol < ol2 + size; ol++)
2705 if ((ol->type & opt_hidden) == 0)
2706 print_ol(ol, US ol->name, d, ol2, size, no_labels);
2709 for (ol = d->info->options;
2710 ol < d->info->options + *(d->info->options_count); ol++)
2712 if ((ol->type & opt_hidden) == 0)
2713 print_ol(ol, US ol->name, d, d->info->options, *(d->info->options_count), no_labels);
2715 if (name != NULL) return;
2717 if (name != NULL) printf("%s %s not found\n", type, name);
2722 /*************************************************
2723 * Read a named list item *
2724 *************************************************/
2726 /* This function reads a name and a list (i.e. string). The name is used to
2727 save the list in a tree, sorted by its name. Each entry also has a number,
2728 which can be used for caching tests, but if the string contains any expansion
2729 items other than $key, the number is set negative to inhibit caching. This
2730 mechanism is used for domain, host, and address lists that are referenced by
2734 anchorp points to the tree anchor
2735 numberp points to the current number for this tree
2736 max the maximum number permitted
2737 s the text of the option line, starting immediately after the name
2739 tname the name of the list type, for messages
2745 read_named_list(tree_node **anchorp, int *numberp, int max, uschar *s,
2748 BOOL forcecache = FALSE;
2751 namedlist_block *nb = store_get(sizeof(namedlist_block));
2753 if (Ustrncmp(s, "_cache", 6) == 0)
2760 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "unrecognized configuration line");
2762 if (*numberp >= max)
2763 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "too many named %ss (max is %d)\n",
2766 while (isspace(*s)) s++;
2768 while (isalnum(*s) || *s == '_') s++;
2769 t = store_get(sizeof(tree_node) + s-ss);
2770 Ustrncpy(t->name, ss, s-ss);
2772 while (isspace(*s)) s++;
2774 if (!tree_insertnode(anchorp, t))
2775 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
2776 "duplicate name \"%s\" for a named %s", t->name, tname);
2779 nb->number = *numberp;
2782 if (*s++ != '=') log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
2783 "missing '=' after \"%s\"", t->name);
2784 while (isspace(*s)) s++;
2785 nb->string = read_string(s, t->name);
2786 nb->cache_data = NULL;
2788 /* Check the string for any expansions; if any are found, mark this list
2789 uncacheable unless the user has explicited forced caching. */
2791 if (!forcecache && Ustrchr(nb->string, '$') != NULL) nb->number = -1;
2797 /*************************************************
2798 * Unpick data for a rate limit *
2799 *************************************************/
2801 /* This function is called to unpick smtp_ratelimit_{mail,rcpt} into four
2805 s string, in the form t,b,f,l
2806 where t is the threshold (integer)
2807 b is the initial delay (time)
2808 f is the multiplicative factor (fixed point)
2809 k is the maximum time (time)
2810 threshold where to store threshold
2811 base where to store base in milliseconds
2812 factor where to store factor in milliseconds
2813 limit where to store limit
2815 Returns: nothing (panics on error)
2819 unpick_ratelimit(uschar *s, int *threshold, int *base, double *factor,
2822 uschar bstring[16], lstring[16];
2824 if (sscanf(CS s, "%d, %15[0123456789smhdw.], %lf, %15s", threshold, bstring,
2825 factor, lstring) == 4)
2827 *base = readconf_readtime(bstring, 0, TRUE);
2828 *limit = readconf_readtime(lstring, 0, TRUE);
2829 if (*base >= 0 && *limit >= 0) return;
2831 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "malformed ratelimit data: %s", s);
2837 /*************************************************
2838 * Drop privs for checking TLS config *
2839 *************************************************/
2841 /* We want to validate TLS options during readconf, but do not want to be
2842 root when we call into the TLS library, in case of library linkage errors
2843 which cause segfaults; before this check, those were always done as the Exim
2844 runtime user and it makes sense to continue with that.
2846 Assumes: tls_require_ciphers has been set, if it will be
2847 exim_user has been set, if it will be
2848 exim_group has been set, if it will be
2850 Returns: bool for "okay"; false will cause caller to immediately exit.
2855 tls_dropprivs_validate_require_cipher(void)
2857 const uschar *errmsg;
2860 void (*oldsignal)(int);
2862 oldsignal = signal(SIGCHLD, SIG_DFL);
2865 if ((pid = fork()) < 0)
2866 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "fork failed for TLS check");
2870 /* in some modes, will have dropped privilege already */
2872 exim_setugid(exim_uid, exim_gid, FALSE,
2873 US"calling tls_validate_require_cipher");
2875 errmsg = tls_validate_require_cipher();
2878 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
2879 "tls_require_ciphers invalid: %s", errmsg);
2886 rc = waitpid(pid, &status, 0);
2887 } while (rc < 0 && errno == EINTR);
2890 debug_printf("tls_validate_require_cipher child %d ended: status=0x%x\n",
2893 signal(SIGCHLD, oldsignal);
2897 #endif /* SUPPORT_TLS */
2902 /*************************************************
2903 * Read main configuration options *
2904 *************************************************/
2906 /* This function is the first to be called for configuration reading. It
2907 opens the configuration file and reads general configuration settings until
2908 it reaches the end of the configuration section. The file is then left open so
2909 that the remaining configuration data can subsequently be read if needed for
2912 The configuration file must be owned either by root or exim, and be writeable
2913 only by root or uid/gid exim. The values for Exim's uid and gid can be changed
2914 in the config file, so the test is done on the compiled in values. A slight
2915 anomaly, to be carefully documented.
2917 The name of the configuration file is taken from a list that is included in the
2918 binary of Exim. It can be altered from the command line, but if that is done,
2919 root privilege is immediately withdrawn unless the caller is root or exim.
2920 The first file on the list that exists is used.
2922 For use on multiple systems that share file systems, first look for a
2923 configuration file whose name has the current node name on the end. If that is
2924 not found, try the generic name. For really contorted configurations, that run
2925 multiple Exims with different uid settings, first try adding the effective uid
2926 before the node name. These complications are going to waste resources on most
2927 systems. Therefore they are available only when requested by compile-time
2934 struct stat statbuf;
2935 uschar *s, *filename;
2936 uschar *list = config_main_filelist;
2938 /* Loop through the possible file names */
2940 while((filename = string_nextinlist(&list, &sep, big_buffer, big_buffer_size))
2943 /* Cut out all the fancy processing unless specifically wanted */
2945 #if defined(CONFIGURE_FILE_USE_NODE) || defined(CONFIGURE_FILE_USE_EUID)
2946 uschar *suffix = filename + Ustrlen(filename);
2948 /* Try for the node-specific file if a node name exists */
2950 #ifdef CONFIGURE_FILE_USE_NODE
2952 if (uname(&uts) >= 0)
2954 #ifdef CONFIGURE_FILE_USE_EUID
2955 sprintf(CS suffix, ".%ld.%.256s", (long int)original_euid, uts.nodename);
2956 config_file = Ufopen(filename, "rb");
2957 if (config_file == NULL)
2958 #endif /* CONFIGURE_FILE_USE_EUID */
2960 sprintf(CS suffix, ".%.256s", uts.nodename);
2961 config_file = Ufopen(filename, "rb");
2964 #endif /* CONFIGURE_FILE_USE_NODE */
2966 /* Otherwise, try the generic name, possibly with the euid added */
2968 #ifdef CONFIGURE_FILE_USE_EUID
2969 if (config_file == NULL)
2971 sprintf(CS suffix, ".%ld", (long int)original_euid);
2972 config_file = Ufopen(filename, "rb");
2974 #endif /* CONFIGURE_FILE_USE_EUID */
2976 /* Finally, try the unadorned name */
2978 if (config_file == NULL)
2981 config_file = Ufopen(filename, "rb");
2983 #else /* if neither defined */
2985 /* This is the common case when the fancy processing is not included. */
2987 config_file = Ufopen(filename, "rb");
2990 /* If the file does not exist, continue to try any others. For any other
2991 error, break out (and die). */
2993 if (config_file != NULL || errno != ENOENT) break;
2996 /* On success, save the name for verification; config_filename is used when
2997 logging configuration errors (it changes for .included files) whereas
2998 config_main_filename is the name shown by -bP. Failure to open a configuration
2999 file is a serious disaster. */
3001 if (config_file != NULL)
3003 config_filename = config_main_filename = string_copy(filename);
3007 if (filename == NULL)
3008 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "non-existent configuration file(s): "
3009 "%s", config_main_filelist);
3011 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "%s", string_open_failed(errno,
3012 "configuration file %s", filename));
3015 /* Check the status of the file we have opened, if we have retained root
3016 privileges and the file isn't /dev/null (which *should* be 0666). */
3018 if (trusted_config && Ustrcmp(filename, US"/dev/null"))
3020 if (fstat(fileno(config_file), &statbuf) != 0)
3021 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "failed to stat configuration file %s",
3024 if ((statbuf.st_uid != root_uid /* owner not root */
3025 #ifdef CONFIGURE_OWNER
3026 && statbuf.st_uid != config_uid /* owner not the special one */
3029 (statbuf.st_gid != root_gid /* group not root & */
3030 #ifdef CONFIGURE_GROUP
3031 && statbuf.st_gid != config_gid /* group not the special one */
3033 && (statbuf.st_mode & 020) != 0) || /* group writeable */
3035 ((statbuf.st_mode & 2) != 0)) /* world writeable */
3037 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "Exim configuration file %s has the "
3038 "wrong owner, group, or mode", big_buffer);
3041 /* Process the main configuration settings. They all begin with a lower case
3042 letter. If we see something starting with an upper case letter, it is taken as
3043 a macro definition. */
3045 while ((s = get_config_line()) != NULL)
3047 if (isupper(s[0])) read_macro_assignment(s);
3049 else if (Ustrncmp(s, "domainlist", 10) == 0)
3050 read_named_list(&domainlist_anchor, &domainlist_count,
3051 MAX_NAMED_LIST, s+10, US"domain list");
3053 else if (Ustrncmp(s, "hostlist", 8) == 0)
3054 read_named_list(&hostlist_anchor, &hostlist_count,
3055 MAX_NAMED_LIST, s+8, US"host list");
3057 else if (Ustrncmp(s, US"addresslist", 11) == 0)
3058 read_named_list(&addresslist_anchor, &addresslist_count,
3059 MAX_NAMED_LIST, s+11, US"address list");
3061 else if (Ustrncmp(s, US"localpartlist", 13) == 0)
3062 read_named_list(&localpartlist_anchor, &localpartlist_count,
3063 MAX_NAMED_LIST, s+13, US"local part list");
3066 (void) readconf_handle_option(s, optionlist_config, optionlist_config_size,
3067 NULL, US"main option \"%s\" unknown");
3071 /* If local_sender_retain is set, local_from_check must be unset. */
3073 if (local_sender_retain && local_from_check)
3074 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "both local_from_check and "
3075 "local_sender_retain are set; this combination is not allowed");
3077 /* If the timezone string is empty, set it to NULL, implying no TZ variable
3080 if (timezone_string != NULL && *timezone_string == 0) timezone_string = NULL;
3082 /* The max retry interval must not be greater than 24 hours. */
3084 if (retry_interval_max > 24*60*60) retry_interval_max = 24*60*60;
3086 /* remote_max_parallel must be > 0 */
3088 if (remote_max_parallel <= 0) remote_max_parallel = 1;
3090 /* Save the configured setting of freeze_tell, so we can re-instate it at the
3091 start of a new SMTP message. */
3093 freeze_tell_config = freeze_tell;
3095 /* The primary host name may be required for expansion of spool_directory
3096 and log_file_path, so make sure it is set asap. It is obtained from uname(),
3097 but if that yields an unqualified value, make a FQDN by using gethostbyname to
3098 canonize it. Some people like upper case letters in their host names, so we
3099 don't force the case. */
3101 if (primary_hostname == NULL)
3105 if (uname(&uts) < 0)
3106 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "uname() failed to yield host name");
3107 hostname = US uts.nodename;
3109 if (Ustrchr(hostname, '.') == NULL)
3112 struct hostent *hostdata;
3115 if (!disable_ipv6 && (dns_ipv4_lookup == NULL ||
3116 match_isinlist(hostname, &dns_ipv4_lookup, 0, NULL, NULL, MCL_DOMAIN,
3126 #if HAVE_GETIPNODEBYNAME
3128 hostdata = getipnodebyname(CS hostname, af, 0, &error_num);
3130 hostdata = gethostbyname2(CS hostname, af);
3133 hostdata = gethostbyname(CS hostname);
3136 if (hostdata != NULL)
3138 hostname = US hostdata->h_name;
3142 if (af == AF_INET) break;
3147 primary_hostname = string_copy(hostname);
3150 /* Set up default value for smtp_active_hostname */
3152 smtp_active_hostname = primary_hostname;
3154 /* If spool_directory wasn't set in the build-time configuration, it must have
3155 got set above. Of course, writing to the log may not work if log_file_path is
3156 not set, but it will at least get to syslog or somewhere, with any luck. */
3158 if (*spool_directory == 0)
3159 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "spool_directory undefined: cannot "
3162 /* Expand the spool directory name; it may, for example, contain the primary
3163 host name. Same comment about failure. */
3165 s = expand_string(spool_directory);
3167 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "failed to expand spool_directory "
3168 "\"%s\": %s", spool_directory, expand_string_message);
3169 spool_directory = s;
3171 /* Expand log_file_path, which must contain "%s" in any component that isn't
3172 the null string or "syslog". It is also allowed to contain one instance of %D
3173 or %M. However, it must NOT contain % followed by anything else. */
3175 if (*log_file_path != 0)
3178 int sep = ':'; /* Fixed for log file path */
3179 s = expand_string(log_file_path);
3181 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "failed to expand log_file_path "
3182 "\"%s\": %s", log_file_path, expand_string_message);
3185 while ((sss = string_nextinlist(&ss,&sep,big_buffer,big_buffer_size)) != NULL)
3188 if (sss[0] == 0 || Ustrcmp(sss, "syslog") == 0) continue;
3189 t = Ustrstr(sss, "%s");
3191 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "log_file_path \"%s\" does not "
3192 "contain \"%%s\"", sss);
3194 t = Ustrchr(sss, '%');
3197 if ((t[1] != 'D' && t[1] != 'M') || Ustrchr(t+2, '%') != NULL)
3198 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "log_file_path \"%s\" contains "
3199 "unexpected \"%%\" character", s);
3206 /* Interpret syslog_facility into an integer argument for 'ident' param to
3207 openlog(). Default is LOG_MAIL set in globals.c. Allow the user to omit the
3210 if (syslog_facility_str != NULL)
3213 uschar *s = syslog_facility_str;
3215 if ((Ustrlen(syslog_facility_str) >= 4) &&
3216 (strncmpic(syslog_facility_str, US"log_", 4) == 0))
3219 for (i = 0; i < syslog_list_size; i++)
3221 if (strcmpic(s, syslog_list[i].name) == 0)
3223 syslog_facility = syslog_list[i].value;
3228 if (i >= syslog_list_size)
3230 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
3231 "failed to interpret syslog_facility \"%s\"", syslog_facility_str);
3235 /* Expand pid_file_path */
3237 if (*pid_file_path != 0)
3239 s = expand_string(pid_file_path);
3241 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "failed to expand pid_file_path "
3242 "\"%s\": %s", pid_file_path, expand_string_message);
3246 /* Set default value of process_log_path */
3248 if (process_log_path == NULL || *process_log_path =='\0')
3249 process_log_path = string_sprintf("%s/exim-process.info", spool_directory);
3251 /* Compile the regex for matching a UUCP-style "From_" line in an incoming
3254 regex_From = regex_must_compile(uucp_from_pattern, FALSE, TRUE);
3256 /* Unpick the SMTP rate limiting options, if set */
3258 if (smtp_ratelimit_mail != NULL)
3260 unpick_ratelimit(smtp_ratelimit_mail, &smtp_rlm_threshold,
3261 &smtp_rlm_base, &smtp_rlm_factor, &smtp_rlm_limit);
3264 if (smtp_ratelimit_rcpt != NULL)
3266 unpick_ratelimit(smtp_ratelimit_rcpt, &smtp_rlr_threshold,
3267 &smtp_rlr_base, &smtp_rlr_factor, &smtp_rlr_limit);
3270 /* The qualify domains default to the primary host name */
3272 if (qualify_domain_sender == NULL)
3273 qualify_domain_sender = primary_hostname;
3274 if (qualify_domain_recipient == NULL)
3275 qualify_domain_recipient = qualify_domain_sender;
3277 /* Setting system_filter_user in the configuration sets the gid as well if a
3278 name is given, but a numerical value does not. */
3280 if (system_filter_uid_set && !system_filter_gid_set)
3282 struct passwd *pw = getpwuid(system_filter_uid);
3284 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "Failed to look up uid %ld",
3285 (long int)system_filter_uid);
3286 system_filter_gid = pw->pw_gid;
3287 system_filter_gid_set = TRUE;
3290 /* If the errors_reply_to field is set, check that it is syntactically valid
3291 and ensure it contains a domain. */
3293 if (errors_reply_to != NULL)
3296 int start, end, domain;
3297 uschar *recipient = parse_extract_address(errors_reply_to, &errmess,
3298 &start, &end, &domain, FALSE);
3300 if (recipient == NULL)
3301 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
3302 "error in errors_reply_to (%s): %s", errors_reply_to, errmess);
3305 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
3306 "errors_reply_to (%s) does not contain a domain", errors_reply_to);
3309 /* If smtp_accept_queue or smtp_accept_max_per_host is set, then
3310 smtp_accept_max must also be set. */
3312 if (smtp_accept_max == 0 &&
3313 (smtp_accept_queue > 0 || smtp_accept_max_per_host != NULL))
3314 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
3315 "smtp_accept_max must be set if smtp_accept_queue or "
3316 "smtp_accept_max_per_host is set");
3318 /* Set up the host number if anything is specified. It is an expanded string
3319 so that it can be computed from the host name, for example. We do this last
3320 so as to ensure that everything else is set up before the expansion. */
3322 if (host_number_string != NULL)
3326 uschar *s = expand_string(host_number_string);
3328 log_write(0, LOG_MAIN|LOG_PANIC_DIE,
3329 "failed to expand localhost_number \"%s\": %s",
3330 host_number_string, expand_string_message);
3331 n = Ustrtol(s, &end, 0);
3332 while (isspace(*end)) end++;
3334 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
3335 "localhost_number value is not a number: %s", s);
3336 if (n > LOCALHOST_MAX)
3337 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
3338 "localhost_number is greater than the maximum allowed value (%d)",
3344 /* If tls_verify_hosts is set, tls_verify_certificates must also be set */
3346 if ((tls_verify_hosts != NULL || tls_try_verify_hosts != NULL) &&
3347 tls_verify_certificates == NULL)
3348 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
3349 "tls_%sverify_hosts is set, but tls_verify_certificates is not set",
3350 (tls_verify_hosts != NULL)? "" : "try_");
3352 /* This also checks that the library linkage is working and we can call
3353 routines in it, so call even if tls_require_ciphers is unset */
3354 if (!tls_dropprivs_validate_require_cipher())
3357 /* Magic number: at time of writing, 1024 has been the long-standing value
3358 used by so many clients, and what Exim used to use always, that it makes
3359 sense to just min-clamp this max-clamp at that. */
3360 if (tls_dh_max_bits < 1024)
3361 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
3362 "tls_dh_max_bits is too small, must be at least 1024 for interop");
3364 /* If openssl_options is set, validate it */
3365 if (openssl_options != NULL)
3368 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
3369 "openssl_options is set but we're using GnuTLS");
3372 if (!(tls_openssl_options_parse(openssl_options, &dummy)))
3373 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
3374 "openssl_options parse error: %s", openssl_options);
3378 if (gnutls_require_kx || gnutls_require_mac || gnutls_require_proto)
3379 log_write(0, LOG_MAIN, "WARNING: main options"
3380 " gnutls_require_kx, gnutls_require_mac and gnutls_require_protocols"
3382 #endif /*SUPPORT_TLS*/
3387 /*************************************************
3388 * Initialize one driver *
3389 *************************************************/
3391 /* This is called once the driver's generic options, if any, have been read.
3392 We can now find the driver, set up defaults for the private options, and
3393 unset any "set" bits in the private options table (which might have been
3394 set by another incarnation of the same driver).
3397 d pointer to driver instance block, with generic
3399 drivers_available vector of available drivers
3400 size_of_info size of each block in drivers_available
3401 class class of driver, for error message
3403 Returns: pointer to the driver info block
3406 static driver_info *
3407 init_driver(driver_instance *d, driver_info *drivers_available,
3408 int size_of_info, uschar *class)
3412 for (dd = drivers_available; dd->driver_name[0] != 0;
3413 dd = (driver_info *)(((uschar *)dd) + size_of_info))
3415 if (Ustrcmp(d->driver_name, dd->driver_name) == 0)
3418 int len = dd->options_len;
3420 d->options_block = store_get(len);
3421 memcpy(d->options_block, dd->options_block, len);
3422 for (i = 0; i < *(dd->options_count); i++)
3423 dd->options[i].type &= ~opt_set;
3428 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
3429 "%s %s: cannot find %s driver \"%s\"", class, d->name, class, d->driver_name);
3431 return NULL; /* never obeyed */
3437 /*************************************************
3438 * Initialize driver list *
3439 *************************************************/
3441 /* This function is called for routers, transports, and authentication
3442 mechanisms. It reads the data from the current point in the configuration file
3443 up to the end of the section, and sets up a chain of instance blocks according
3444 to the file's contents. The file will already have been opened by a call to
3445 readconf_main, and must be left open for subsequent reading of further data.
3447 Any errors cause a panic crash. Note that the blocks with names driver_info and
3448 driver_instance must map the first portions of all the _info and _instance
3449 blocks for this shared code to work.
3452 class "router", "transport", or "authenticator"
3453 anchor &routers, &transports, &auths
3454 drivers_available available drivers
3455 size_of_info size of each info block
3456 instance_default points to default data for an instance
3457 instance_size size of instance block
3458 driver_optionlist generic option list
3459 driver_optionlist_count count of generic option list
3465 readconf_driver_init(
3467 driver_instance **anchor,
3468 driver_info *drivers_available,
3470 void *instance_default,
3472 optionlist *driver_optionlist,
3473 int driver_optionlist_count)
3475 driver_instance **p = anchor;
3476 driver_instance *d = NULL;
3479 while ((buffer = get_config_line()) != NULL)
3484 /* Read the first name on the line and test for the start of a new driver. A
3485 macro definition indicates the end of the previous driver. If this isn't the
3486 start of a new driver, the line will be re-read. */
3488 s = readconf_readname(name, sizeof(name), buffer);
3490 /* Handle macro definition, first finishing off the initialization of the
3491 previous driver, if any. */
3493 if (isupper(*name) && *s == '=')
3497 if (d->driver_name == NULL)
3498 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
3499 "no driver defined for %s \"%s\"", class, d->name);
3503 read_macro_assignment(buffer);
3507 /* If the line starts with a name terminated by a colon, we are at the
3508 start of the definition of a new driver. The rest of the line must be
3515 /* Finish off initializing the previous driver. */
3519 if (d->driver_name == NULL)
3520 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
3521 "no driver defined for %s \"%s\"", class, d->name);
3525 /* Check that we haven't already got a driver of this name */
3527 for (d = *anchor; d != NULL; d = d->next)
3528 if (Ustrcmp(name, d->name) == 0)
3529 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
3530 "there are two %ss called \"%s\"", class, name);
3532 /* Set up a new driver instance data block on the chain, with
3533 its default values installed. */
3535 d = store_get(instance_size);
3536 memcpy(d, instance_default, instance_size);
3539 d->name = string_copy(name);
3541 /* Clear out the "set" bits in the generic options */
3543 for (i = 0; i < driver_optionlist_count; i++)
3544 driver_optionlist[i].type &= ~opt_set;
3546 /* Check nothing more on this line, then do the next loop iteration. */
3548 while (isspace(*s)) s++;
3549 if (*s != 0) extra_chars_error(s, US"driver name ", name, US"");
3553 /* Not the start of a new driver. Give an error if we have not set up a
3554 current driver yet. */
3556 if (d == NULL) log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
3557 "%s name missing", class);
3559 /* First look to see if this is a generic option; if it is "driver",
3560 initialize the driver. If is it not a generic option, we can look for a
3561 private option provided that the driver has been previously set up. */
3563 if (readconf_handle_option(buffer, driver_optionlist,
3564 driver_optionlist_count, d, NULL))
3566 if (d->info == NULL && d->driver_name != NULL)
3567 init_driver(d, drivers_available, size_of_info, class);
3570 /* Handle private options - pass the generic block because some may
3571 live therein. A flag with each option indicates if it is in the public
3574 else if (d->info != NULL)
3576 readconf_handle_option(buffer, d->info->options,
3577 *(d->info->options_count), d, US"option \"%s\" unknown");
3580 /* The option is not generic and the driver name has not yet been given. */
3582 else log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "option \"%s\" unknown "
3583 "(\"driver\" must be specified before any private options)", name);
3586 /* Run the initialization function for the final driver. */
3590 if (d->driver_name == NULL)
3591 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
3592 "no driver defined for %s \"%s\"", class, d->name);
3599 /*************************************************
3600 * Check driver dependency *
3601 *************************************************/
3603 /* This function is passed a driver instance and a string. It checks whether
3604 any of the string options for the driver contains the given string as an
3608 d points to a driver instance block
3609 s the string to search for
3611 Returns: TRUE if a dependency is found
3615 readconf_depends(driver_instance *d, uschar *s)
3617 int count = *(d->info->options_count);
3621 for (ol = d->info->options; ol < d->info->options + count; ol++)
3623 void *options_block;
3625 int type = ol->type & opt_mask;
3626 if (type != opt_stringptr) continue;
3627 options_block = ((ol->type & opt_public) == 0)? d->options_block : (void *)d;
3628 value = *(uschar **)((uschar *)options_block + (long int)(ol->value));
3629 if (value != NULL && (ss = Ustrstr(value, s)) != NULL)
3631 if (ss <= value || (ss[-1] != '$' && ss[-1] != '{') ||
3632 isalnum(ss[Ustrlen(s)])) continue;
3633 DEBUG(D_transport) debug_printf("driver %s: \"%s\" option depends on %s\n",
3634 d->name, ol->name, s);
3639 DEBUG(D_transport) debug_printf("driver %s does not depend on %s\n", d->name, s);
3646 /*************************************************
3647 * Decode an error type for retries *
3648 *************************************************/
3650 /* This function is global because it is also called from the main
3651 program when testing retry information. It decodes strings such as "quota_7d"
3652 into numerical error codes.
3655 pp points to start of text
3656 p points past end of text
3657 basic_errno points to an int to receive the main error number
3658 more_errno points to an int to receive the secondary error data
3660 Returns: NULL if decoded correctly; else points to error text
3664 readconf_retry_error(uschar *pp, uschar *p, int *basic_errno, int *more_errno)
3668 while (q < p && *q != '_') q++;
3671 if (len == 5 && strncmpic(pp, US"quota", len) == 0)
3673 *basic_errno = ERRNO_EXIMQUOTA;
3674 if (q != p && (*more_errno = readconf_readtime(q+1, *p, FALSE)) < 0)
3675 return US"bad time value";
3678 else if (len == 7 && strncmpic(pp, US"refused", len) == 0)
3680 *basic_errno = ECONNREFUSED;
3683 if (strncmpic(q+1, US"MX", p-q-1) == 0) *more_errno = 'M';
3684 else if (strncmpic(q+1, US"A", p-q-1) == 0) *more_errno = 'A';
3685 else return US"A or MX expected after \"refused\"";
3689 else if (len == 7 && strncmpic(pp, US"timeout", len) == 0)
3691 *basic_errno = ETIMEDOUT;
3695 int xlen = p - q - 1;
3698 static uschar *extras[] =
3699 { US"A", US"MX", US"connect", US"connect_A", US"connect_MX" };
3700 static int values[] =
3701 { 'A', 'M', RTEF_CTOUT, RTEF_CTOUT|'A', RTEF_CTOUT|'M' };
3703 for (i = 0; i < sizeof(extras)/sizeof(uschar *); i++)
3705 if (strncmpic(x, extras[i], xlen) == 0)
3707 *more_errno = values[i];
3712 if (i >= sizeof(extras)/sizeof(uschar *))
3714 if (strncmpic(x, US"DNS", xlen) == 0)
3716 log_write(0, LOG_MAIN|LOG_PANIC, "\"timeout_dns\" is no longer "
3717 "available in retry rules (it has never worked) - treated as "
3720 else return US"\"A\", \"MX\", or \"connect\" expected after \"timeout\"";
3725 else if (strncmpic(pp, US"mail_4", 6) == 0 ||
3726 strncmpic(pp, US"rcpt_4", 6) == 0 ||
3727 strncmpic(pp, US"data_4", 6) == 0)
3730 int x = 255; /* means "any 4xx code" */
3731 if (p != pp + 8) bad = TRUE; else
3733 int a = pp[6], b = pp[7];
3737 if (isdigit(b)) x += b - '0';
3738 else if (b == 'x') x += 100;
3741 else if (a != 'x' || b != 'x') bad = TRUE;
3745 return string_sprintf("%.4s_4 must be followed by xx, dx, or dd, where "
3746 "x is literal and d is any digit", pp);
3748 *basic_errno = (*pp == 'm')? ERRNO_MAIL4XX :
3749 (*pp == 'r')? ERRNO_RCPT4XX : ERRNO_DATA4XX;
3750 *more_errno = x << 8;
3753 else if (len == 4 && strncmpic(pp, US"auth", len) == 0 &&
3754 strncmpic(q+1, US"failed", p-q-1) == 0)
3755 *basic_errno = ERRNO_AUTHFAIL;
3757 else if (strncmpic(pp, US"lost_connection", p - pp) == 0)
3758 *basic_errno = ERRNO_SMTPCLOSED;
3760 else if (strncmpic(pp, US"tls_required", p - pp) == 0)
3761 *basic_errno = ERRNO_TLSREQUIRED;
3763 else if (len != 1 || Ustrncmp(pp, "*", 1) != 0)
3764 return string_sprintf("unknown or malformed retry error \"%.*s\"", (int) (p-pp), pp);
3772 /*************************************************
3773 * Read retry information *
3774 *************************************************/
3776 /* Each line of retry information contains:
3778 . A domain name pattern or an address pattern;
3780 . An error name, possibly with additional data, or *;
3782 . An optional sequence of retry items, each consisting of an identifying
3783 letter, a cutoff time, and optional parameters.
3785 All this is decoded and placed into a control block. */
3788 /* Subroutine to read an argument, preceded by a comma and terminated
3789 by comma, semicolon, whitespace, or newline. The types are: 0 = time value,
3790 1 = fixed point number (returned *1000).
3793 paddr pointer to pointer to current character; updated
3794 type 0 => read a time; 1 => read a fixed point number
3796 Returns: time in seconds or fixed point number * 1000
3800 retry_arg(uschar **paddr, int type)
3805 if (*p++ != ',') log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "comma expected");
3807 while (isspace(*p)) p++;
3809 while (isalnum(*p) || (type == 1 && *p == '.')) p++;
3811 if (*p != 0 && !isspace(*p) && *p != ',' && *p != ';')
3812 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "comma or semicolon expected");
3818 return readconf_readtime(pp, *p, FALSE);
3820 return readconf_readfixed(pp, *p);
3822 return 0; /* Keep picky compilers happy */
3825 /* The function proper */
3828 readconf_retries(void)
3830 retry_config **chain = &retries;
3834 while ((p = get_config_line()) != NULL)
3836 retry_rule **rchain;
3839 next = store_get(sizeof(retry_config));
3842 chain = &(next->next);
3843 next->basic_errno = next->more_errno = 0;
3844 next->senders = NULL;
3846 rchain = &(next->rules);
3848 next->pattern = string_dequote(&p);
3849 while (isspace(*p)) p++;
3851 while (mac_isgraph(*p)) p++;
3852 if (p - pp <= 0) log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
3853 "missing error type in retry rule");
3855 /* Test error names for things we understand. */
3857 if ((error = readconf_retry_error(pp, p, &(next->basic_errno),
3858 &(next->more_errno))) != NULL)
3859 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "%s", error);
3861 /* There may be an optional address list of senders to be used as another
3862 constraint on the rule. This was added later, so the syntax is a bit of a
3863 fudge. Anything that is not a retry rule starting "F," or "G," is treated as
3866 while (isspace(*p)) p++;
3867 if (Ustrncmp(p, "senders", 7) == 0)
3870 while (isspace(*p)) p++;
3871 if (*p++ != '=') log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
3872 "\"=\" expected after \"senders\" in retry rule");
3873 while (isspace(*p)) p++;
3874 next->senders = string_dequote(&p);
3877 /* Now the retry rules. Keep the maximum timeout encountered. */
3879 while (isspace(*p)) p++;
3883 retry_rule *rule = store_get(sizeof(retry_rule));
3885 rchain = &(rule->next);
3887 rule->rule = toupper(*p++);
3888 rule->timeout = retry_arg(&p, 0);
3889 if (rule->timeout > retry_maximum_timeout)
3890 retry_maximum_timeout = rule->timeout;
3894 case 'F': /* Fixed interval */
3895 rule->p1 = retry_arg(&p, 0);
3898 case 'G': /* Geometrically increasing intervals */
3899 case 'H': /* Ditto, but with randomness */
3900 rule->p1 = retry_arg(&p, 0);
3901 rule->p2 = retry_arg(&p, 1);
3905 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "unknown retry rule letter");
3909 if (rule->timeout <= 0 || rule->p1 <= 0 ||
3910 (rule->rule != 'F' && rule->p2 < 1000))
3911 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
3912 "bad parameters for retry rule");
3914 while (isspace(*p)) p++;
3918 while (isspace(*p)) p++;
3921 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "semicolon expected");
3928 /*************************************************
3929 * Initialize authenticators *
3930 *************************************************/
3932 /* Read the authenticators section of the configuration file.
3941 auth_instance *au, *bu;
3942 readconf_driver_init(US"authenticator",
3943 (driver_instance **)(&auths), /* chain anchor */
3944 (driver_info *)auths_available, /* available drivers */
3945 sizeof(auth_info), /* size of info block */
3946 &auth_defaults, /* default values for generic options */
3947 sizeof(auth_instance), /* size of instance block */
3948 optionlist_auths, /* generic options */
3949 optionlist_auths_size);
3951 for (au = auths; au != NULL; au = au->next)
3953 if (au->public_name == NULL)
3954 log_write(0, LOG_PANIC_DIE|LOG_CONFIG, "no public name specified for "
3955 "the %s authenticator", au->name);
3956 for (bu = au->next; bu != NULL; bu = bu->next)
3958 if (strcmpic(au->public_name, bu->public_name) == 0)
3960 if ((au->client && bu->client) || (au->server && bu->server))
3961 log_write(0, LOG_PANIC_DIE|LOG_CONFIG, "two %s authenticators "
3962 "(%s and %s) have the same public name (%s)",
3963 (au->client)? US"client" : US"server", au->name, bu->name,
3973 /*************************************************
3974 * Read ACL information *
3975 *************************************************/
3977 /* If this run of Exim is not doing something that involves receiving a
3978 message, we can just skip over the ACL information. No need to parse it.
3980 First, we have a function for acl_read() to call back to get the next line. We
3981 need to remember the line we passed, because at the end it will contain the
3982 name of the next ACL. */
3984 static uschar *acl_line;
3989 acl_line = get_config_line();
3994 /* Now the main function:
4005 /* Read each ACL and add it into the tree. Macro (re)definitions are allowed
4008 acl_line = get_config_line();
4010 while(acl_line != NULL)
4016 p = readconf_readname(name, sizeof(name), acl_line);
4017 if (isupper(*name) && *p == '=')
4019 read_macro_assignment(acl_line);
4020 acl_line = get_config_line();
4024 if (*p != ':' || name[0] == 0)
4025 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "missing or malformed ACL name");
4027 node = store_get(sizeof(tree_node) + Ustrlen(name));
4028 Ustrcpy(node->name, name);
4029 if (!tree_insertnode(&acl_anchor, node))
4030 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
4031 "there are two ACLs called \"%s\"", name);
4033 node->data.ptr = acl_read(acl_callback, &error);
4035 if (node->data.ptr == NULL && error != NULL)
4036 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "error in ACL: %s", error);
4042 /*************************************************
4043 * Read configuration for local_scan() *
4044 *************************************************/
4046 /* This function is called after "begin local_scan" is encountered in the
4047 configuration file. If the local_scan() function allows for configuration
4048 options, we can process them. Otherwise, we expire in a panic.
4055 local_scan_init(void)
4057 #ifndef LOCAL_SCAN_HAS_OPTIONS
4058 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "local_scan() options not supported: "
4059 "(LOCAL_SCAN_HAS_OPTIONS not defined in Local/Makefile)");
4063 while ((p = get_config_line()) != NULL)
4065 (void) readconf_handle_option(p, local_scan_options, local_scan_options_count,
4066 NULL, US"local_scan option \"%s\" unknown");
4073 /*************************************************
4074 * Read rest of configuration (after main) *
4075 *************************************************/
4077 /* This function reads the rest of the runtime configuration, after the main
4078 configuration. It is called only when actually needed. Each subsequent section
4079 of the configuration starts with a line of the form
4083 where the name is "routers", "transports", etc. A section is terminated by
4084 hitting the next "begin" line, and the next name is left in next_section.
4085 Because it may confuse people as to whether the names are singular or plural,
4086 we add "s" if it's missing. There is always enough room in next_section for
4087 this. This function is basically just a switch.
4093 static uschar *section_list[] = {
4107 while(next_section[0] != 0)
4111 int last = sizeof(section_list) / sizeof(uschar *);
4113 int n = Ustrlen(next_section);
4115 if (tolower(next_section[n-1]) != 's') Ustrcpy(next_section+n, "s");
4119 int c = strcmpic(next_section, section_list[mid]);
4121 if (c > 0) first = mid + 1; else last = mid;
4123 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
4124 "\"%.*s\" is not a known configuration section name", n, next_section);
4125 mid = (last + first)/2;
4129 if (((had ^= bit) & bit) == 0)
4130 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
4131 "\"%.*s\" section is repeated in the configuration file", n,
4136 case 0: readconf_acl(); break;
4137 case 1: auths_init(); break;
4138 case 2: local_scan_init(); break;
4139 case 3: readconf_retries(); break;
4140 case 4: readconf_rewrites(); break;
4141 case 5: route_init(); break;
4142 case 6: transport_init(); break;
4146 (void)fclose(config_file);
4151 /* End of readconf.c */