1 /*************************************************
2 * Exim - an Internet mail transport agent *
3 *************************************************/
5 /* Copyright (c) University of Cambridge 1995 - 2015 */
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 static void fn_smtp_receive_timeout(const uschar * name, const uschar * str);
17 #define CSTATE_STACK_SIZE 10
20 /* Structure for chain (stack) of .included files */
22 typedef struct config_file_item {
23 struct config_file_item *next;
29 /* Structure of table of conditional words and their state transitions */
31 typedef struct cond_item {
39 /* Structure of table of syslog facility names and values */
41 typedef struct syslog_fac_item {
47 /* Static variables */
49 static config_file_item *config_file_stack = NULL; /* For includes */
51 static uschar *syslog_facility_str = NULL;
52 static uschar next_section[24];
53 static uschar time_buffer[24];
55 /* State variables for conditional loading (.ifdef / .else / .endif) */
57 static int cstate = 0;
58 static int cstate_stack_ptr = -1;
59 static int cstate_stack[CSTATE_STACK_SIZE];
61 /* Table of state transitions for handling conditional inclusions. There are
62 four possible state transitions:
66 .elifdef true (or .else)
69 .endif just causes the previous cstate to be popped off the stack */
71 static int next_cstate[3][4] =
73 /* State 0: reading from file, or reading until next .else or .endif */
75 /* State 1: condition failed, skipping until next .else or .endif */
77 /* State 2: skipping until .endif */
81 /* Table of conditionals and the states to set. For each name, there are four
82 values: the length of the name (to save computing it each time), the state to
83 set if a macro was found in the line, the state to set if a macro was not found
84 in the line, and a stack manipulation setting which is:
86 -1 pull state value off the stack
87 0 don't alter the stack
88 +1 push value onto stack, before setting new state
91 static cond_item cond_list[] = {
92 { US"ifdef", 5, 0, 1, 1 },
93 { US"ifndef", 6, 1, 0, 1 },
94 { US"elifdef", 7, 2, 3, 0 },
95 { US"elifndef", 8, 3, 2, 0 },
96 { US"else", 4, 2, 2, 0 },
97 { US"endif", 5, 0, 0, -1 }
100 static int cond_list_size = sizeof(cond_list)/sizeof(cond_item);
102 /* Table of syslog facility names and their values */
104 static syslog_fac_item syslog_list[] = {
105 { US"mail", LOG_MAIL },
106 { US"user", LOG_USER },
107 { US"news", LOG_NEWS },
108 { US"uucp", LOG_UUCP },
109 { US"local0", LOG_LOCAL0 },
110 { US"local1", LOG_LOCAL1 },
111 { US"local2", LOG_LOCAL2 },
112 { US"local3", LOG_LOCAL3 },
113 { US"local4", LOG_LOCAL4 },
114 { US"local5", LOG_LOCAL5 },
115 { US"local6", LOG_LOCAL6 },
116 { US"local7", LOG_LOCAL7 },
117 { US"daemon", LOG_DAEMON }
120 static int syslog_list_size = sizeof(syslog_list)/sizeof(syslog_fac_item);
125 /*************************************************
126 * Main configuration options *
127 *************************************************/
129 /* The list of options that can be set in the main configuration file. This
130 must be in alphabetic order because it is searched by binary chop. */
132 static optionlist optionlist_config[] = {
133 { "*set_exim_group", opt_bool|opt_hidden, &exim_gid_set },
134 { "*set_exim_user", opt_bool|opt_hidden, &exim_uid_set },
135 { "*set_system_filter_group", opt_bool|opt_hidden, &system_filter_gid_set },
136 { "*set_system_filter_user", opt_bool|opt_hidden, &system_filter_uid_set },
137 { "accept_8bitmime", opt_bool, &accept_8bitmime },
138 { "acl_not_smtp", opt_stringptr, &acl_not_smtp },
139 #ifdef WITH_CONTENT_SCAN
140 { "acl_not_smtp_mime", opt_stringptr, &acl_not_smtp_mime },
142 { "acl_not_smtp_start", opt_stringptr, &acl_not_smtp_start },
143 { "acl_smtp_auth", opt_stringptr, &acl_smtp_auth },
144 { "acl_smtp_connect", opt_stringptr, &acl_smtp_connect },
145 { "acl_smtp_data", opt_stringptr, &acl_smtp_data },
147 { "acl_smtp_data_prdr", opt_stringptr, &acl_smtp_data_prdr },
150 { "acl_smtp_dkim", opt_stringptr, &acl_smtp_dkim },
152 { "acl_smtp_etrn", opt_stringptr, &acl_smtp_etrn },
153 { "acl_smtp_expn", opt_stringptr, &acl_smtp_expn },
154 { "acl_smtp_helo", opt_stringptr, &acl_smtp_helo },
155 { "acl_smtp_mail", opt_stringptr, &acl_smtp_mail },
156 { "acl_smtp_mailauth", opt_stringptr, &acl_smtp_mailauth },
157 #ifdef WITH_CONTENT_SCAN
158 { "acl_smtp_mime", opt_stringptr, &acl_smtp_mime },
160 { "acl_smtp_notquit", opt_stringptr, &acl_smtp_notquit },
161 { "acl_smtp_predata", opt_stringptr, &acl_smtp_predata },
162 { "acl_smtp_quit", opt_stringptr, &acl_smtp_quit },
163 { "acl_smtp_rcpt", opt_stringptr, &acl_smtp_rcpt },
165 { "acl_smtp_starttls", opt_stringptr, &acl_smtp_starttls },
167 { "acl_smtp_vrfy", opt_stringptr, &acl_smtp_vrfy },
168 { "admin_groups", opt_gidlist, &admin_groups },
169 { "allow_domain_literals", opt_bool, &allow_domain_literals },
170 { "allow_mx_to_ip", opt_bool, &allow_mx_to_ip },
171 { "allow_utf8_domains", opt_bool, &allow_utf8_domains },
172 { "auth_advertise_hosts", opt_stringptr, &auth_advertise_hosts },
173 { "auto_thaw", opt_time, &auto_thaw },
174 #ifdef WITH_CONTENT_SCAN
175 { "av_scanner", opt_stringptr, &av_scanner },
177 { "bi_command", opt_stringptr, &bi_command },
178 #ifdef EXPERIMENTAL_BRIGHTMAIL
179 { "bmi_config_file", opt_stringptr, &bmi_config_file },
181 { "bounce_message_file", opt_stringptr, &bounce_message_file },
182 { "bounce_message_text", opt_stringptr, &bounce_message_text },
183 { "bounce_return_body", opt_bool, &bounce_return_body },
184 { "bounce_return_message", opt_bool, &bounce_return_message },
185 { "bounce_return_size_limit", opt_mkint, &bounce_return_size_limit },
186 { "bounce_sender_authentication",opt_stringptr,&bounce_sender_authentication },
187 { "callout_domain_negative_expire", opt_time, &callout_cache_domain_negative_expire },
188 { "callout_domain_positive_expire", opt_time, &callout_cache_domain_positive_expire },
189 { "callout_negative_expire", opt_time, &callout_cache_negative_expire },
190 { "callout_positive_expire", opt_time, &callout_cache_positive_expire },
191 { "callout_random_local_part",opt_stringptr, &callout_random_local_part },
192 { "check_log_inodes", opt_int, &check_log_inodes },
193 { "check_log_space", opt_Kint, &check_log_space },
194 { "check_rfc2047_length", opt_bool, &check_rfc2047_length },
195 { "check_spool_inodes", opt_int, &check_spool_inodes },
196 { "check_spool_space", opt_Kint, &check_spool_space },
197 { "daemon_smtp_port", opt_stringptr|opt_hidden, &daemon_smtp_port },
198 { "daemon_smtp_ports", opt_stringptr, &daemon_smtp_port },
199 { "daemon_startup_retries", opt_int, &daemon_startup_retries },
200 { "daemon_startup_sleep", opt_time, &daemon_startup_sleep },
201 #ifdef EXPERIMENTAL_DCC
202 { "dcc_direct_add_header", opt_bool, &dcc_direct_add_header },
203 { "dccifd_address", opt_stringptr, &dccifd_address },
204 { "dccifd_options", opt_stringptr, &dccifd_options },
206 { "delay_warning", opt_timelist, &delay_warning },
207 { "delay_warning_condition", opt_stringptr, &delay_warning_condition },
208 { "deliver_drop_privilege", opt_bool, &deliver_drop_privilege },
209 { "deliver_queue_load_max", opt_fixed, &deliver_queue_load_max },
210 { "delivery_date_remove", opt_bool, &delivery_date_remove },
211 #ifdef ENABLE_DISABLE_FSYNC
212 { "disable_fsync", opt_bool, &disable_fsync },
214 { "disable_ipv6", opt_bool, &disable_ipv6 },
216 { "dkim_verify_signers", opt_stringptr, &dkim_verify_signers },
218 #ifdef EXPERIMENTAL_DMARC
219 { "dmarc_forensic_sender", opt_stringptr, &dmarc_forensic_sender },
220 { "dmarc_history_file", opt_stringptr, &dmarc_history_file },
221 { "dmarc_tld_file", opt_stringptr, &dmarc_tld_file },
223 { "dns_again_means_nonexist", opt_stringptr, &dns_again_means_nonexist },
224 { "dns_check_names_pattern", opt_stringptr, &check_dns_names_pattern },
225 { "dns_csa_search_limit", opt_int, &dns_csa_search_limit },
226 { "dns_csa_use_reverse", opt_bool, &dns_csa_use_reverse },
227 { "dns_dnssec_ok", opt_int, &dns_dnssec_ok },
228 { "dns_ipv4_lookup", opt_stringptr, &dns_ipv4_lookup },
229 { "dns_retrans", opt_time, &dns_retrans },
230 { "dns_retry", opt_int, &dns_retry },
231 { "dns_use_edns0", opt_int, &dns_use_edns0 },
232 /* This option is now a no-op, retained for compability */
233 { "drop_cr", opt_bool, &drop_cr },
234 /*********************************************************/
235 { "dsn_advertise_hosts", opt_stringptr, &dsn_advertise_hosts },
236 { "dsn_from", opt_stringptr, &dsn_from },
237 { "envelope_to_remove", opt_bool, &envelope_to_remove },
238 { "errors_copy", opt_stringptr, &errors_copy },
239 { "errors_reply_to", opt_stringptr, &errors_reply_to },
240 #ifdef EXPERIMENTAL_EVENT
241 { "event_action", opt_stringptr, &event_action },
243 { "exim_group", opt_gid, &exim_gid },
244 { "exim_path", opt_stringptr, &exim_path },
245 { "exim_user", opt_uid, &exim_uid },
246 { "extra_local_interfaces", opt_stringptr, &extra_local_interfaces },
247 { "extract_addresses_remove_arguments", opt_bool, &extract_addresses_remove_arguments },
248 { "finduser_retries", opt_int, &finduser_retries },
249 { "freeze_tell", opt_stringptr, &freeze_tell },
250 { "gecos_name", opt_stringptr, &gecos_name },
251 { "gecos_pattern", opt_stringptr, &gecos_pattern },
253 { "gnutls_allow_auto_pkcs11", opt_bool, &gnutls_allow_auto_pkcs11 },
254 { "gnutls_compat_mode", opt_bool, &gnutls_compat_mode },
255 /* These three gnutls_require_* options stopped working in Exim 4.80 */
256 /* From 4.83 we log a warning; a future relase will remove them */
257 { "gnutls_require_kx", opt_stringptr, &gnutls_require_kx },
258 { "gnutls_require_mac", opt_stringptr, &gnutls_require_mac },
259 { "gnutls_require_protocols", opt_stringptr, &gnutls_require_proto },
261 { "header_line_maxsize", opt_int, &header_line_maxsize },
262 { "header_maxsize", opt_int, &header_maxsize },
263 { "headers_charset", opt_stringptr, &headers_charset },
264 { "helo_accept_junk_hosts", opt_stringptr, &helo_accept_junk_hosts },
265 { "helo_allow_chars", opt_stringptr, &helo_allow_chars },
266 { "helo_lookup_domains", opt_stringptr, &helo_lookup_domains },
267 { "helo_try_verify_hosts", opt_stringptr, &helo_try_verify_hosts },
268 { "helo_verify_hosts", opt_stringptr, &helo_verify_hosts },
269 { "hold_domains", opt_stringptr, &hold_domains },
270 { "host_lookup", opt_stringptr, &host_lookup },
271 { "host_lookup_order", opt_stringptr, &host_lookup_order },
272 { "host_reject_connection", opt_stringptr, &host_reject_connection },
273 { "hosts_connection_nolog", opt_stringptr, &hosts_connection_nolog },
274 { "hosts_treat_as_local", opt_stringptr, &hosts_treat_as_local },
276 { "ibase_servers", opt_stringptr, &ibase_servers },
278 { "ignore_bounce_errors_after", opt_time, &ignore_bounce_errors_after },
279 { "ignore_fromline_hosts", opt_stringptr, &ignore_fromline_hosts },
280 { "ignore_fromline_local", opt_bool, &ignore_fromline_local },
281 { "keep_malformed", opt_time, &keep_malformed },
283 { "ldap_ca_cert_dir", opt_stringptr, &eldap_ca_cert_dir },
284 { "ldap_ca_cert_file", opt_stringptr, &eldap_ca_cert_file },
285 { "ldap_cert_file", opt_stringptr, &eldap_cert_file },
286 { "ldap_cert_key", opt_stringptr, &eldap_cert_key },
287 { "ldap_cipher_suite", opt_stringptr, &eldap_cipher_suite },
288 { "ldap_default_servers", opt_stringptr, &eldap_default_servers },
289 { "ldap_require_cert", opt_stringptr, &eldap_require_cert },
290 { "ldap_start_tls", opt_bool, &eldap_start_tls },
291 { "ldap_version", opt_int, &eldap_version },
293 { "local_from_check", opt_bool, &local_from_check },
294 { "local_from_prefix", opt_stringptr, &local_from_prefix },
295 { "local_from_suffix", opt_stringptr, &local_from_suffix },
296 { "local_interfaces", opt_stringptr, &local_interfaces },
297 { "local_scan_timeout", opt_time, &local_scan_timeout },
298 { "local_sender_retain", opt_bool, &local_sender_retain },
299 { "localhost_number", opt_stringptr, &host_number_string },
300 { "log_file_path", opt_stringptr, &log_file_path },
301 { "log_selector", opt_stringptr, &log_selector_string },
302 { "log_timezone", opt_bool, &log_timezone },
303 { "lookup_open_max", opt_int, &lookup_open_max },
304 { "max_username_length", opt_int, &max_username_length },
305 { "message_body_newlines", opt_bool, &message_body_newlines },
306 { "message_body_visible", opt_mkint, &message_body_visible },
307 { "message_id_header_domain", opt_stringptr, &message_id_domain },
308 { "message_id_header_text", opt_stringptr, &message_id_text },
309 { "message_logs", opt_bool, &message_logs },
310 { "message_size_limit", opt_stringptr, &message_size_limit },
311 #ifdef SUPPORT_MOVE_FROZEN_MESSAGES
312 { "move_frozen_messages", opt_bool, &move_frozen_messages },
314 { "mua_wrapper", opt_bool, &mua_wrapper },
316 { "mysql_servers", opt_stringptr, &mysql_servers },
318 { "never_users", opt_uidlist, &never_users },
320 { "openssl_options", opt_stringptr, &openssl_options },
323 { "oracle_servers", opt_stringptr, &oracle_servers },
325 { "percent_hack_domains", opt_stringptr, &percent_hack_domains },
327 { "perl_at_start", opt_bool, &opt_perl_at_start },
328 { "perl_startup", opt_stringptr, &opt_perl_startup },
331 { "pgsql_servers", opt_stringptr, &pgsql_servers },
333 { "pid_file_path", opt_stringptr, &pid_file_path },
334 { "pipelining_advertise_hosts", opt_stringptr, &pipelining_advertise_hosts },
336 { "prdr_enable", opt_bool, &prdr_enable },
338 { "preserve_message_logs", opt_bool, &preserve_message_logs },
339 { "primary_hostname", opt_stringptr, &primary_hostname },
340 { "print_topbitchars", opt_bool, &print_topbitchars },
341 { "process_log_path", opt_stringptr, &process_log_path },
342 { "prod_requires_admin", opt_bool, &prod_requires_admin },
343 #ifdef EXPERIMENTAL_PROXY
344 { "proxy_required_hosts", opt_stringptr, &proxy_required_hosts },
346 { "qualify_domain", opt_stringptr, &qualify_domain_sender },
347 { "qualify_recipient", opt_stringptr, &qualify_domain_recipient },
348 { "queue_domains", opt_stringptr, &queue_domains },
349 { "queue_list_requires_admin",opt_bool, &queue_list_requires_admin },
350 { "queue_only", opt_bool, &queue_only },
351 { "queue_only_file", opt_stringptr, &queue_only_file },
352 { "queue_only_load", opt_fixed, &queue_only_load },
353 { "queue_only_load_latch", opt_bool, &queue_only_load_latch },
354 { "queue_only_override", opt_bool, &queue_only_override },
355 { "queue_run_in_order", opt_bool, &queue_run_in_order },
356 { "queue_run_max", opt_int, &queue_run_max },
357 { "queue_smtp_domains", opt_stringptr, &queue_smtp_domains },
358 { "receive_timeout", opt_time, &receive_timeout },
359 { "received_header_text", opt_stringptr, &received_header_text },
360 { "received_headers_max", opt_int, &received_headers_max },
361 { "recipient_unqualified_hosts", opt_stringptr, &recipient_unqualified_hosts },
362 { "recipients_max", opt_int, &recipients_max },
363 { "recipients_max_reject", opt_bool, &recipients_max_reject },
364 #ifdef EXPERIMENTAL_REDIS
365 { "redis_servers", opt_stringptr, &redis_servers },
367 { "remote_max_parallel", opt_int, &remote_max_parallel },
368 { "remote_sort_domains", opt_stringptr, &remote_sort_domains },
369 { "retry_data_expire", opt_time, &retry_data_expire },
370 { "retry_interval_max", opt_time, &retry_interval_max },
371 { "return_path_remove", opt_bool, &return_path_remove },
372 { "return_size_limit", opt_mkint|opt_hidden, &bounce_return_size_limit },
373 { "rfc1413_hosts", opt_stringptr, &rfc1413_hosts },
374 { "rfc1413_query_timeout", opt_time, &rfc1413_query_timeout },
375 { "sender_unqualified_hosts", opt_stringptr, &sender_unqualified_hosts },
376 { "slow_lookup_log", opt_int, &slow_lookup_log },
377 { "smtp_accept_keepalive", opt_bool, &smtp_accept_keepalive },
378 { "smtp_accept_max", opt_int, &smtp_accept_max },
379 { "smtp_accept_max_nonmail", opt_int, &smtp_accept_max_nonmail },
380 { "smtp_accept_max_nonmail_hosts", opt_stringptr, &smtp_accept_max_nonmail_hosts },
381 { "smtp_accept_max_per_connection", opt_int, &smtp_accept_max_per_connection },
382 { "smtp_accept_max_per_host", opt_stringptr, &smtp_accept_max_per_host },
383 { "smtp_accept_queue", opt_int, &smtp_accept_queue },
384 { "smtp_accept_queue_per_connection", opt_int, &smtp_accept_queue_per_connection },
385 { "smtp_accept_reserve", opt_int, &smtp_accept_reserve },
386 { "smtp_active_hostname", opt_stringptr, &raw_active_hostname },
387 { "smtp_banner", opt_stringptr, &smtp_banner },
388 { "smtp_check_spool_space", opt_bool, &smtp_check_spool_space },
389 { "smtp_connect_backlog", opt_int, &smtp_connect_backlog },
390 { "smtp_enforce_sync", opt_bool, &smtp_enforce_sync },
391 { "smtp_etrn_command", opt_stringptr, &smtp_etrn_command },
392 { "smtp_etrn_serialize", opt_bool, &smtp_etrn_serialize },
393 { "smtp_load_reserve", opt_fixed, &smtp_load_reserve },
394 { "smtp_max_synprot_errors", opt_int, &smtp_max_synprot_errors },
395 { "smtp_max_unknown_commands",opt_int, &smtp_max_unknown_commands },
396 { "smtp_ratelimit_hosts", opt_stringptr, &smtp_ratelimit_hosts },
397 { "smtp_ratelimit_mail", opt_stringptr, &smtp_ratelimit_mail },
398 { "smtp_ratelimit_rcpt", opt_stringptr, &smtp_ratelimit_rcpt },
399 { "smtp_receive_timeout", opt_func, &fn_smtp_receive_timeout },
400 { "smtp_reserve_hosts", opt_stringptr, &smtp_reserve_hosts },
401 { "smtp_return_error_details",opt_bool, &smtp_return_error_details },
402 #ifdef EXPERIMENTAL_INTERNATIONAL
403 { "smtputf8_advertise_hosts", opt_stringptr, &smtputf8_advertise_hosts },
405 #ifdef WITH_CONTENT_SCAN
406 { "spamd_address", opt_stringptr, &spamd_address },
408 #ifdef EXPERIMENTAL_SPF
409 { "spf_guess", opt_stringptr, &spf_guess },
411 { "split_spool_directory", opt_bool, &split_spool_directory },
412 { "spool_directory", opt_stringptr, &spool_directory },
414 { "sqlite_lock_timeout", opt_int, &sqlite_lock_timeout },
416 #ifdef EXPERIMENTAL_SRS
417 { "srs_config", opt_stringptr, &srs_config },
418 { "srs_hashlength", opt_int, &srs_hashlength },
419 { "srs_hashmin", opt_int, &srs_hashmin },
420 { "srs_maxage", opt_int, &srs_maxage },
421 { "srs_secrets", opt_stringptr, &srs_secrets },
422 { "srs_usehash", opt_bool, &srs_usehash },
423 { "srs_usetimestamp", opt_bool, &srs_usetimestamp },
425 { "strict_acl_vars", opt_bool, &strict_acl_vars },
426 { "strip_excess_angle_brackets", opt_bool, &strip_excess_angle_brackets },
427 { "strip_trailing_dot", opt_bool, &strip_trailing_dot },
428 { "syslog_duplication", opt_bool, &syslog_duplication },
429 { "syslog_facility", opt_stringptr, &syslog_facility_str },
430 { "syslog_processname", opt_stringptr, &syslog_processname },
431 { "syslog_timestamp", opt_bool, &syslog_timestamp },
432 { "system_filter", opt_stringptr, &system_filter },
433 { "system_filter_directory_transport", opt_stringptr,&system_filter_directory_transport },
434 { "system_filter_file_transport",opt_stringptr,&system_filter_file_transport },
435 { "system_filter_group", opt_gid, &system_filter_gid },
436 { "system_filter_pipe_transport",opt_stringptr,&system_filter_pipe_transport },
437 { "system_filter_reply_transport",opt_stringptr,&system_filter_reply_transport },
438 { "system_filter_user", opt_uid, &system_filter_uid },
439 { "tcp_nodelay", opt_bool, &tcp_nodelay },
440 #ifdef USE_TCP_WRAPPERS
441 { "tcp_wrappers_daemon_name", opt_stringptr, &tcp_wrappers_daemon_name },
443 { "timeout_frozen_after", opt_time, &timeout_frozen_after },
444 { "timezone", opt_stringptr, &timezone_string },
446 { "tls_advertise_hosts", opt_stringptr, &tls_advertise_hosts },
447 { "tls_certificate", opt_stringptr, &tls_certificate },
448 { "tls_crl", opt_stringptr, &tls_crl },
449 { "tls_dh_max_bits", opt_int, &tls_dh_max_bits },
450 { "tls_dhparam", opt_stringptr, &tls_dhparam },
451 { "tls_eccurve", opt_stringptr, &tls_eccurve },
452 # ifndef DISABLE_OCSP
453 { "tls_ocsp_file", opt_stringptr, &tls_ocsp_file },
455 { "tls_on_connect_ports", opt_stringptr, &tls_in.on_connect_ports },
456 { "tls_privatekey", opt_stringptr, &tls_privatekey },
457 { "tls_remember_esmtp", opt_bool, &tls_remember_esmtp },
458 { "tls_require_ciphers", opt_stringptr, &tls_require_ciphers },
459 { "tls_try_verify_hosts", opt_stringptr, &tls_try_verify_hosts },
460 { "tls_verify_certificates", opt_stringptr, &tls_verify_certificates },
461 { "tls_verify_hosts", opt_stringptr, &tls_verify_hosts },
463 { "trusted_groups", opt_gidlist, &trusted_groups },
464 { "trusted_users", opt_uidlist, &trusted_users },
465 { "unknown_login", opt_stringptr, &unknown_login },
466 { "unknown_username", opt_stringptr, &unknown_username },
467 { "untrusted_set_sender", opt_stringptr, &untrusted_set_sender },
468 { "uucp_from_pattern", opt_stringptr, &uucp_from_pattern },
469 { "uucp_from_sender", opt_stringptr, &uucp_from_sender },
470 { "warn_message_file", opt_stringptr, &warn_message_file },
471 { "write_rejectlog", opt_bool, &write_rejectlog }
474 static int optionlist_config_size =
475 sizeof(optionlist_config)/sizeof(optionlist);
479 /*************************************************
480 * Find the name of an option *
481 *************************************************/
483 /* This function is to aid debugging. Various functions take arguments that are
484 pointer variables in the options table or in option tables for various drivers.
485 For debugging output, it is useful to be able to find the name of the option
486 which is currently being processed. This function finds it, if it exists, by
487 searching the table(s).
489 Arguments: a value that is presumed to be in the table above
490 Returns: the option name, or an empty string
494 readconf_find_option(void *p)
498 transport_instance *t;
500 for (i = 0; i < optionlist_config_size; i++)
501 if (p == optionlist_config[i].value) return US optionlist_config[i].name;
503 for (r = routers; r != NULL; r = r->next)
505 router_info *ri = r->info;
506 for (i = 0; i < *ri->options_count; i++)
508 if ((ri->options[i].type & opt_mask) != opt_stringptr) continue;
509 if (p == (char *)(r->options_block) + (long int)(ri->options[i].value))
510 return US ri->options[i].name;
514 for (t = transports; t != NULL; t = t->next)
516 transport_info *ti = t->info;
517 for (i = 0; i < *ti->options_count; i++)
519 optionlist * op = &ti->options[i];
520 if ((op->type & opt_mask) != opt_stringptr) continue;
521 if (p == ( op->type & opt_public
523 : (char *)t->options_block
525 + (long int)op->value)
536 /*************************************************
537 * Deal with an assignment to a macro *
538 *************************************************/
540 /* This function is called when a line that starts with an upper case letter is
541 encountered. The argument "line" should contain a complete logical line, and
542 start with the first letter of the macro name. The macro name and the
543 replacement text are extracted and stored. Redefinition of existing,
544 non-command line, macros is permitted using '==' instead of '='.
547 s points to the start of the logical line
553 read_macro_assignment(uschar *s)
559 macro_item *mlast = NULL;
561 while (isalnum(*s) || *s == '_')
563 if (namelen >= sizeof(name) - 1)
564 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
565 "macro name too long (maximum is " SIZE_T_FMT " characters)", sizeof(name) - 1);
566 name[namelen++] = *s++;
570 while (isspace(*s)) s++;
572 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "malformed macro definition");
579 while (isspace(*s)) s++;
581 /* If an existing macro of the same name was defined on the command line, we
582 just skip this definition. It's an error to attempt to redefine a macro without
583 redef set to TRUE, or to redefine a macro when it hasn't been defined earlier.
584 It is also an error to define a macro whose name begins with the name of a
585 previously defined macro. Note: it is documented that the other way round
588 for (m = macros; m != NULL; m = m->next)
590 int len = Ustrlen(m->name);
592 if (Ustrcmp(m->name, name) == 0)
594 if (!m->command_line && !redef)
595 log_write(0, LOG_CONFIG|LOG_PANIC_DIE, "macro \"%s\" is already "
596 "defined (use \"==\" if you want to redefine it", name);
600 if (len < namelen && Ustrstr(name, m->name) != NULL)
601 log_write(0, LOG_CONFIG|LOG_PANIC_DIE, "\"%s\" cannot be defined as "
602 "a macro because previously defined macro \"%s\" is a substring",
605 /* We cannot have this test, because it is documented that a substring
606 macro is permitted (there is even an example).
608 * if (len > namelen && Ustrstr(m->name, name) != NULL)
609 * log_write(0, LOG_CONFIG|LOG_PANIC_DIE, "\"%s\" cannot be defined as "
610 * "a macro because it is a substring of previously defined macro \"%s\"",
617 /* Check for an overriding command-line definition. */
619 if (m != NULL && m->command_line) return;
621 /* Redefinition must refer to an existing macro. */
626 log_write(0, LOG_CONFIG|LOG_PANIC_DIE, "can't redefine an undefined macro "
630 /* We have a new definition. The macro_item structure includes a final vector
631 called "name" which is one byte long. Thus, adding "namelen" gives us enough
632 room to store the "name" string. */
636 m = store_get(sizeof(macro_item) + namelen);
637 if (macros == NULL) macros = m; else mlast->next = m;
638 Ustrncpy(m->name, name, namelen);
639 m->name[namelen] = 0;
641 m->command_line = FALSE;
644 /* Set the value of the new or redefined macro */
646 m->replacement = string_copy(s);
653 /*************************************************
654 * Read configuration line *
655 *************************************************/
657 /* A logical line of text is read from the configuration file into the big
658 buffer, taking account of macros, .includes, and continuations. The size of
659 big_buffer is increased if necessary. The count of configuration lines is
660 maintained. Physical input lines starting with # (ignoring leading white space,
661 and after macro replacement) and empty logical lines are always ignored.
662 Leading and trailing spaces are removed.
664 If we hit a line of the form "begin xxxx", the xxxx is placed in the
665 next_section vector, and the function returns NULL, indicating the end of a
666 configuration section. On end-of-file, NULL is returned with next_section
671 Returns: a pointer to the first non-blank in the line,
672 or NULL if eof or end of section is reached
676 get_config_line(void)
678 int startoffset = 0; /* To first non-blank char in logical line */
679 int len = 0; /* Of logical line so far */
685 /* Loop for handling continuation lines, skipping comments, and dealing with
690 if (Ufgets(big_buffer+len, big_buffer_size-len, config_file) == NULL)
692 if (config_file_stack != NULL) /* EOF inside .include */
694 (void)fclose(config_file);
695 config_file = config_file_stack->file;
696 config_filename = config_file_stack->filename;
697 config_lineno = config_file_stack->lineno;
698 config_file_stack = config_file_stack->next;
702 /* EOF at top level */
704 if (cstate_stack_ptr >= 0)
705 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
706 "Unexpected end of configuration file: .endif missing");
708 if (len != 0) break; /* EOF after continuation */
709 next_section[0] = 0; /* EOF at start of logical line */
714 newlen = len + Ustrlen(big_buffer + len);
716 /* Handle pathologically long physical lines - yes, it did happen - by
717 extending big_buffer at this point. The code also copes with very long
720 while (newlen == big_buffer_size - 1 && big_buffer[newlen - 1] != '\n')
723 big_buffer_size += BIG_BUFFER_SIZE;
724 newbuffer = store_malloc(big_buffer_size);
726 /* This use of strcpy is OK because we know that the string in the old
727 buffer is shorter than the new buffer. */
729 Ustrcpy(newbuffer, big_buffer);
730 store_free(big_buffer);
731 big_buffer = newbuffer;
732 if (Ufgets(big_buffer+newlen, big_buffer_size-newlen, config_file) == NULL)
734 newlen += Ustrlen(big_buffer + newlen);
737 /* Find the true start of the physical line - leading spaces are always
740 ss = big_buffer + len;
741 while (isspace(*ss)) ss++;
743 /* Process the physical line for macros. If this is the start of the logical
744 line, skip over initial text at the start of the line if it starts with an
745 upper case character followed by a sequence of name characters and an equals
746 sign, because that is the definition of a new macro, and we don't do
747 replacement therein. */
750 if (len == 0 && isupper(*s))
752 while (isalnum(*s) || *s == '_') s++;
753 while (isspace(*s)) s++;
754 if (*s != '=') s = ss; /* Not a macro definition */
757 /* For each defined macro, scan the line (from after XXX= if present),
758 replacing all occurrences of the macro. */
761 for (m = macros; m != NULL; m = m->next)
766 while ((p = Ustrstr(t, m->name)) != NULL)
769 int namelen = Ustrlen(m->name);
770 int replen = Ustrlen(m->replacement);
772 /* Expand the buffer if necessary */
774 while (newlen - namelen + replen + 1 > big_buffer_size)
776 int newsize = big_buffer_size + BIG_BUFFER_SIZE;
777 uschar *newbuffer = store_malloc(newsize);
778 memcpy(newbuffer, big_buffer, newlen + 1);
779 p = newbuffer + (p - big_buffer);
780 s = newbuffer + (s - big_buffer);
781 ss = newbuffer + (ss - big_buffer);
782 t = newbuffer + (t - big_buffer);
783 big_buffer_size = newsize;
784 store_free(big_buffer);
785 big_buffer = newbuffer;
788 /* Shuffle the remaining characters up or down in the buffer before
789 copying in the replacement text. Don't rescan the replacement for this
793 moveby = replen - namelen;
796 memmove(p + replen, pp, (big_buffer + newlen) - pp + 1);
799 Ustrncpy(p, m->replacement, replen);
805 /* An empty macro replacement at the start of a line could mean that ss no
806 longer points to the first non-blank character. */
808 while (isspace(*ss)) ss++;
810 /* Check for comment lines - these are physical lines. */
812 if (*ss == '#') continue;
814 /* Handle conditionals, which are also applied to physical lines. Conditions
815 are of the form ".ifdef ANYTEXT" and are treated as true if any macro
816 expansion occured on the rest of the line. A preliminary test for the leading
817 '.' saves effort on most lines. */
823 /* Search the list of conditional directives */
825 for (i = 0; i < cond_list_size; i++)
828 cond_item *c = cond_list+i;
829 if (Ustrncmp(ss+1, c->name, c->namelen) != 0) continue;
831 /* The following character must be white space or end of string */
833 n = ss[1 + c->namelen];
834 if (n != ' ' && n != 't' && n != '\n' && n != 0) break;
836 /* .ifdef and .ifndef push the current state onto the stack, then set
837 a new one from the table. Stack overflow is an error */
841 if (cstate_stack_ptr >= CSTATE_STACK_SIZE - 1)
842 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
843 ".%s nested too deeply", c->name);
844 cstate_stack[++cstate_stack_ptr] = cstate;
845 cstate = next_cstate[cstate][macro_found? c->action1 : c->action2];
848 /* For any of the others, stack underflow is an error. The next state
849 comes either from the stack (.endif) or from the table. */
853 if (cstate_stack_ptr < 0)
854 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
855 ".%s without matching .ifdef", c->name);
856 cstate = (c->pushpop < 0)? cstate_stack[cstate_stack_ptr--] :
857 next_cstate[cstate][macro_found? c->action1 : c->action2];
860 /* Having dealt with a directive, break the loop */
865 /* If we have handled a conditional directive, continue with the next
866 physical line. Otherwise, fall through. */
868 if (i < cond_list_size) continue;
871 /* If the conditional state is not 0 (actively using these lines), ignore
874 if (cstate != 0) continue; /* Conditional skip */
876 /* Handle .include lines - these are also physical lines. */
878 if (Ustrncmp(ss, ".include", 8) == 0 &&
880 (Ustrncmp(ss+8, "_if_exists", 10) == 0 && isspace(ss[18]))))
883 int include_if_exists = isspace(ss[8])? 0 : 10;
884 config_file_item *save;
887 ss += 9 + include_if_exists;
888 while (isspace(*ss)) ss++;
889 t = ss + Ustrlen(ss);
890 while (t > ss && isspace(t[-1])) t--;
891 if (*ss == '\"' && t[-1] == '\"')
899 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, ".include specifies a non-"
900 "absolute path \"%s\"", ss);
902 if (include_if_exists != 0 && (Ustat(ss, &statbuf) != 0)) continue;
904 save = store_get(sizeof(config_file_item));
905 save->next = config_file_stack;
906 config_file_stack = save;
907 save->file = config_file;
908 save->filename = config_filename;
909 save->lineno = config_lineno;
911 config_file = Ufopen(ss, "rb");
912 if (config_file == NULL)
913 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "failed to open included "
914 "configuration file %s", ss);
915 config_filename = string_copy(ss);
920 /* If this is the start of the logical line, remember where the non-blank
921 data starts. Otherwise shuffle down continuation lines to remove leading
925 startoffset = ss - big_buffer;
928 s = big_buffer + len;
931 memmove(s, ss, (newlen - len) - (ss - s) + 1);
936 /* Accept the new addition to the line. Remove trailing white space. */
939 while (len > 0 && isspace(big_buffer[len-1])) len--;
942 /* We are done if the line does not end in backslash and contains some data.
943 Empty logical lines are ignored. For continuations, remove the backslash and
944 go round the loop to read the continuation line. */
948 if (big_buffer[len-1] != '\\') break; /* End of logical line */
949 big_buffer[--len] = 0; /* Remove backslash */
951 } /* Loop for reading multiple physical lines */
953 /* We now have a logical line. Test for the end of a configuration section (or,
954 more accurately, for the start of the next section). Place the name of the next
955 section in next_section, and return NULL. If the name given is longer than
956 next_section, truncate it. It will be unrecognized later, because all the known
957 section names do fit. Leave space for pluralizing. */
959 s = big_buffer + startoffset; /* First non-space character */
960 if (strncmpic(s, US"begin ", 6) == 0)
963 while (isspace(*s)) s++;
964 if (big_buffer + len - s > sizeof(next_section) - 2)
965 s[sizeof(next_section) - 2] = 0;
966 Ustrcpy(next_section, s);
970 /* Return the first non-blank character. */
977 /*************************************************
979 *************************************************/
981 /* The yield is the pointer to the next uschar. Names longer than the
982 output space are silently truncated. This function is also used from acl.c when
986 name where to put the name
990 Returns: new input pointer
994 readconf_readname(uschar *name, int len, uschar *s)
997 while (isspace(*s)) s++;
1000 while (isalnum(*s) || *s == '_')
1002 if (p < len-1) name[p++] = *s;
1007 while (isspace(*s)) s++;
1014 /*************************************************
1015 * Read a time value *
1016 *************************************************/
1018 /* This function is also called from outside, to read argument
1019 time values. The format of a time value is:
1021 [<n>w][<n>d][<n>h][<n>m][<n>s]
1023 as long as at least one is present. If a format error is encountered,
1024 return a negative value. The value must be terminated by the given
1029 terminator required terminating character
1030 return_msec if TRUE, allow fractional seconds and return milliseconds
1032 Returns: the time value, or -1 on syntax error
1033 value is seconds if return_msec is FALSE
1034 value is milliseconds if return_msec is TRUE
1038 readconf_readtime(const uschar *s, int terminator, BOOL return_msec)
1046 if (!isdigit(*s)) return -1;
1047 (void)sscanf(CCS s, "%d%n", &value, &count);
1052 case 'w': value *= 7;
1053 case 'd': value *= 24;
1054 case 'h': value *= 60;
1055 case 'm': value *= 60;
1060 if (!return_msec) return -1;
1061 (void)sscanf(CCS s, "%lf%n", &fraction, &count);
1063 if (*s++ != 's') return -1;
1064 yield += (int)(fraction * 1000.0);
1070 if (return_msec) value *= 1000;
1072 if (*s == terminator) return yield;
1074 /* Control never reaches here. */
1079 /*************************************************
1080 * Read a fixed point value *
1081 *************************************************/
1083 /* The value is returned *1000
1087 terminator required terminator
1089 Returns: the value, or -1 on error
1093 readconf_readfixed(const uschar *s, int terminator)
1097 if (!isdigit(*s)) return -1;
1098 (void)sscanf(CS s, "%d%n", &value, &count);
1100 yield = value * 1000;
1104 while (isdigit((*(++s))))
1106 yield += (*s - '0') * m;
1111 return (*s == terminator)? yield : (-1);
1116 /*************************************************
1117 * Find option in list *
1118 *************************************************/
1120 /* The lists are always in order, so binary chop can be used.
1123 name the option name to search for
1124 ol the first entry in the option list
1125 last one more than the offset of the last entry in the option list
1127 Returns: pointer to an option entry, or NULL if not found
1131 find_option(uschar *name, optionlist *ol, int last)
1134 while (last > first)
1136 int middle = (first + last)/2;
1137 int c = Ustrcmp(name, ol[middle].name);
1138 if (c == 0) return ol + middle;
1139 else if (c > 0) first = middle + 1;
1147 /*************************************************
1148 * Find a set flag in option list *
1149 *************************************************/
1151 /* Because some versions of Unix make no restrictions on the values of uids and
1152 gids (even negative ones), we cannot represent "unset" by a special value.
1153 There is therefore a separate boolean variable for each one indicating whether
1154 a value is set or not. This function returns a pointer to the boolean, given
1155 the original option name. It is a major disaster if the flag cannot be found.
1158 name the name of the uid or gid option
1159 oltop points to the start of the relevant option list
1160 last one more than the offset of the last item in the option list
1161 data_block NULL when reading main options => data values in the option
1162 list are absolute addresses; otherwise they are byte offsets
1163 in data_block (used for driver options)
1165 Returns: a pointer to the boolean flag.
1169 get_set_flag(uschar *name, optionlist *oltop, int last, void *data_block)
1173 sprintf(CS name2, "*set_%.50s", name);
1174 ol = find_option(name2, oltop, last);
1175 if (ol == NULL) log_write(0, LOG_MAIN|LOG_PANIC_DIE,
1176 "Exim internal error: missing set flag for %s", name);
1177 return (data_block == NULL)? (BOOL *)(ol->value) :
1178 (BOOL *)((uschar *)data_block + (long int)(ol->value));
1184 /*************************************************
1185 * Output extra characters message and die *
1186 *************************************************/
1188 /* Called when an option line has junk on the end. Sometimes this is because
1189 the sysadmin thinks comments are permitted.
1192 s points to the extra characters
1193 t1..t3 strings to insert in the log message
1195 Returns: doesn't return; dies
1199 extra_chars_error(const uschar *s, const uschar *t1, const uschar *t2, const uschar *t3)
1201 uschar *comment = US"";
1202 if (*s == '#') comment = US" (# is comment only at line start)";
1203 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1204 "extra characters follow %s%s%s%s", t1, t2, t3, comment);
1209 /*************************************************
1210 * Read rewrite information *
1211 *************************************************/
1213 /* Each line of rewrite information contains:
1215 . A complete address in the form user@domain, possibly with
1216 leading * for each part; or alternatively, a regex.
1218 . A replacement string (which will be expanded).
1220 . An optional sequence of one-letter flags, indicating which
1221 headers etc. to apply this rule to.
1223 All this is decoded and placed into a control block. The OR of the flags is
1224 maintained in a common word.
1227 p points to the string that makes up the rule
1228 existflags points to the overall flag word
1229 isglobal TRUE if reading global rewrite rules
1231 Returns: the control block for the parsed rule.
1234 static rewrite_rule *
1235 readconf_one_rewrite(const uschar *p, int *existflags, BOOL isglobal)
1237 rewrite_rule *next = store_get(sizeof(rewrite_rule));
1240 next->key = string_dequote(&p);
1242 while (isspace(*p)) p++;
1244 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1245 "missing rewrite replacement string");
1248 next->replacement = string_dequote(&p);
1250 while (*p != 0) switch (*p++)
1252 case ' ': case '\t': break;
1254 case 'q': next->flags |= rewrite_quit; break;
1255 case 'w': next->flags |= rewrite_whole; break;
1257 case 'h': next->flags |= rewrite_all_headers; break;
1258 case 's': next->flags |= rewrite_sender; break;
1259 case 'f': next->flags |= rewrite_from; break;
1260 case 't': next->flags |= rewrite_to; break;
1261 case 'c': next->flags |= rewrite_cc; break;
1262 case 'b': next->flags |= rewrite_bcc; break;
1263 case 'r': next->flags |= rewrite_replyto; break;
1265 case 'E': next->flags |= rewrite_all_envelope; break;
1266 case 'F': next->flags |= rewrite_envfrom; break;
1267 case 'T': next->flags |= rewrite_envto; break;
1269 case 'Q': next->flags |= rewrite_qualify; break;
1270 case 'R': next->flags |= rewrite_repeat; break;
1273 next->flags |= rewrite_smtp;
1274 if (next->key[0] != '^' && Ustrncmp(next->key, "\\N^", 3) != 0)
1275 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1276 "rewrite rule has the S flag but is not a regular expression");
1280 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1281 "unknown rewrite flag character '%c' "
1282 "(could be missing quotes round replacement item)", p[-1]);
1286 /* If no action flags are set, set all the "normal" rewrites. */
1288 if ((next->flags & (rewrite_all | rewrite_smtp)) == 0)
1289 next->flags |= isglobal? rewrite_all : rewrite_all_headers;
1291 /* Remember which exist, for optimization, and return the rule */
1293 *existflags |= next->flags;
1300 /*************************************************
1301 * Read global rewrite information *
1302 *************************************************/
1304 /* Each line is a single rewrite rule; it is parsed into a control block
1305 by readconf_one_rewrite(), and its flags are ORed into the global flag
1306 word rewrite_existflags. */
1309 readconf_rewrites(void)
1311 rewrite_rule **chain = &global_rewrite_rules;
1314 while ((p = get_config_line()) != NULL)
1316 rewrite_rule *next = readconf_one_rewrite(p, &rewrite_existflags, TRUE);
1318 chain = &(next->next);
1324 /*************************************************
1326 *************************************************/
1328 /* Strings are read into the normal store pool. As long we aren't too
1329 near the end of the current block, the string will just use what is necessary
1330 on the top of the stacking pool, because string_cat() uses the extension
1334 s the rest of the input line
1335 name the option name (for errors)
1337 Returns: pointer to the string
1341 read_string(const uschar *s, const uschar *name)
1346 if (*s != '\"') return string_copy(s);
1349 yield = string_dequote(&s);
1351 if (s == ss+1 || s[-1] != '\"')
1352 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1353 "missing quote at end of string value for %s", name);
1355 if (*s != 0) extra_chars_error(s, US"string value for ", name, US"");
1361 /*************************************************
1362 * Custom-handler options *
1363 *************************************************/
1365 fn_smtp_receive_timeout(const uschar * name, const uschar * str)
1368 smtp_receive_timeout_s = string_copy(str);
1371 /* "smtp_receive_timeout", opt_time, &smtp_receive_timeout */
1372 smtp_receive_timeout = readconf_readtime(str, 0, FALSE);
1373 if (smtp_receive_timeout < 0)
1374 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "invalid time value for %s",
1379 /*************************************************
1380 * Handle option line *
1381 *************************************************/
1383 /* This function is called from several places to process a line containing the
1384 setting of an option. The first argument is the line to be decoded; it has been
1385 checked not to be empty and not to start with '#'. Trailing newlines and white
1386 space have been removed. The second argument is a pointer to the list of
1387 variable names that are to be recognized, together with their types and
1388 locations, and the third argument gives the number of entries in the list.
1390 The fourth argument is a pointer to a data block. If it is NULL, then the data
1391 values in the options list are absolute addresses. Otherwise, they are byte
1392 offsets in the data block.
1394 String option data may continue onto several lines; this function reads further
1395 data from config_file if necessary.
1397 The yield of this function is normally zero. If a string continues onto
1398 multiple lines, then the data value is permitted to be followed by a comma
1399 or a semicolon (for use in drivers) and the yield is that character.
1402 buffer contains the configuration line to be handled
1403 oltop points to the start of the relevant option list
1404 last one more than the offset of the last item in the option list
1405 data_block NULL when reading main options => data values in the option
1406 list are absolute addresses; otherwise they are byte offsets
1407 in data_block when they have opt_public set; otherwise
1408 they are byte offsets in data_block->options_block.
1409 unknown_txt format string to use in panic message for unknown option;
1410 must contain %s for option name
1411 if given as NULL, don't panic on unknown option
1413 Returns: TRUE if an option was read successfully,
1414 FALSE false for an unknown option if unknown_txt == NULL,
1415 otherwise panic and die on an unknown option
1419 readconf_handle_option(uschar *buffer, optionlist *oltop, int last,
1420 void *data_block, uschar *unknown_txt)
1424 int n, count, type, value;
1428 BOOL boolvalue = TRUE;
1429 BOOL freesptr = TRUE;
1430 optionlist *ol, *ol2;
1434 uschar *inttype = US"";
1437 uschar *saved_condition, *strtemp;
1438 uschar **str_target;
1442 /* There may be leading spaces; thereafter, we expect an option name starting
1445 while (isspace(*s)) s++;
1447 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "option setting expected: %s", s);
1449 /* Read the name of the option, and skip any subsequent white space. If
1450 it turns out that what we read was "hide", set the flag indicating that
1451 this is a secure option, and loop to read the next word. */
1453 for (n = 0; n < 2; n++)
1455 while (isalnum(*s) || *s == '_')
1457 if (ptr < sizeof(name)-1) name[ptr++] = *s;
1461 while (isspace(*s)) s++;
1462 if (Ustrcmp(name, "hide") != 0) break;
1463 issecure = opt_secure;
1467 /* Deal with "no_" or "not_" here for booleans */
1469 if (Ustrncmp(name, "no_", 3) == 0)
1475 if (Ustrncmp(name, "not_", 4) == 0)
1481 /* Search the list for the given name. A non-existent name, or an option that
1482 is set twice, is a disaster. */
1484 ol = find_option(name + offset, oltop, last);
1488 if (unknown_txt == NULL) return FALSE;
1489 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, CS unknown_txt, name);
1492 if ((ol->type & opt_set) && !(ol->type & (opt_rep_con | opt_rep_str)))
1493 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1494 "\"%s\" option set for the second time", name);
1496 ol->type |= opt_set | issecure;
1497 type = ol->type & opt_mask;
1499 /* Types with data values must be followed by '='; the "no[t]_" prefix
1500 applies only to boolean values. */
1502 if (type < opt_bool || type > opt_bool_last)
1505 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1506 "negation prefix applied to a non-boolean option");
1508 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1509 "unexpected end of line (data missing) after %s", name);
1511 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "missing \"=\" after %s", name);
1514 /* If a boolean wasn't preceded by "no[t]_" it can be followed by = and
1515 true/false/yes/no, or, in the case of opt_expand_bool, a general string that
1516 ultimately expands to one of those values. */
1518 else if (*s != 0 && (offset != 0 || *s != '='))
1519 extra_chars_error(s, US"boolean option ", name, US"");
1521 /* Skip white space after = */
1523 if (*s == '=') while (isspace((*(++s))));
1525 /* If there is a data block and the opt_public flag is not set, change
1526 the data block pointer to the private options block. */
1528 if (data_block != NULL && (ol->type & opt_public) == 0)
1529 data_block = (void *)(((driver_instance *)data_block)->options_block);
1531 /* Now get the data according to the type. */
1535 /* If a string value is not enclosed in quotes, it consists of
1536 the rest of the current line, verbatim. Otherwise, string escapes
1539 A transport is specified as a string, which is then looked up in the
1540 list of transports. A search type is specified as one of a number of
1543 A set or rewrite rules for a driver is specified as a string, which is
1544 then parsed into a suitable chain of control blocks.
1546 Uids and gids are specified as strings which are then looked up in the
1547 passwd file. Lists of uids and gids are similarly specified as colon-
1548 separated strings. */
1553 case opt_expand_uid:
1554 case opt_expand_gid:
1559 reset_point = sptr = read_string(s, name);
1561 /* Having read a string, we now have several different ways of using it,
1562 depending on the data type, so do another switch. If keeping the actual
1563 string is not required (because it is interpreted), freesptr is set TRUE,
1564 and at the end we reset the pool. */
1568 /* If this was a string, set the variable to point to the new string,
1569 and set the flag so its store isn't reclaimed. If it was a list of rewrite
1570 rules, we still keep the string (for printing), and parse the rules into a
1571 control block and flags word. */
1574 if (data_block == NULL)
1575 str_target = (uschar **)(ol->value);
1577 str_target = (uschar **)((uschar *)data_block + (long int)(ol->value));
1578 if (ol->type & opt_rep_con)
1580 /* We already have a condition, we're conducting a crude hack to let
1581 multiple condition rules be chained together, despite storing them in
1583 saved_condition = *str_target;
1584 strtemp = string_sprintf("${if and{{bool_lax{%s}}{bool_lax{%s}}}}",
1585 saved_condition, sptr);
1586 *str_target = string_copy_malloc(strtemp);
1587 /* TODO(pdp): there is a memory leak here and just below
1588 when we set 3 or more conditions; I still don't
1589 understand the store mechanism enough to know
1590 what's the safe way to free content from an earlier store.
1591 AFAICT, stores stack, so freeing an early stored item also stores
1592 all data alloc'd after it. If we knew conditions were adjacent,
1593 we could survive that, but we don't. So I *think* we need to take
1594 another bit from opt_type to indicate "malloced"; this seems like
1595 quite a hack, especially for this one case. It also means that
1596 we can't ever reclaim the store from the *first* condition.
1598 Because we only do this once, near process start-up, I'm prepared to
1599 let this slide for the time being, even though it rankles. */
1601 else if (ol->type & opt_rep_str)
1603 uschar sep_o = Ustrncmp(name, "headers_add", 11)==0 ? '\n' : ':';
1604 int sep_i = -(int)sep_o;
1605 const uschar * list = sptr;
1607 uschar * list_o = *str_target;
1609 while ((s = string_nextinlist(&list, &sep_i, NULL, 0)))
1610 list_o = string_append_listele(list_o, sep_o, s);
1612 *str_target = string_copy_malloc(list_o);
1622 if (data_block == NULL)
1623 *((uschar **)(ol->value)) = sptr;
1625 *((uschar **)((uschar *)data_block + (long int)(ol->value))) = sptr;
1627 if (type == opt_rewrite)
1632 rewrite_rule **chain;
1635 sprintf(CS name2, "*%.50s_rules", name);
1636 ol2 = find_option(name2, oltop, last);
1637 sprintf(CS name2, "*%.50s_flags", name);
1638 ol3 = find_option(name2, oltop, last);
1640 if (ol2 == NULL || ol3 == NULL)
1641 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1642 "rewrite rules not available for driver");
1644 if (data_block == NULL)
1646 chain = (rewrite_rule **)(ol2->value);
1647 flagptr = (int *)(ol3->value);
1651 chain = (rewrite_rule **)((uschar *)data_block + (long int)(ol2->value));
1652 flagptr = (int *)((uschar *)data_block + (long int)(ol3->value));
1655 while ((p = string_nextinlist(CUSS &sptr, &sep, big_buffer, BIG_BUFFER_SIZE)))
1657 rewrite_rule *next = readconf_one_rewrite(p, flagptr, FALSE);
1659 chain = &(next->next);
1662 if ((*flagptr & (rewrite_all_envelope | rewrite_smtp)) != 0)
1663 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "rewrite rule specifies a "
1664 "non-header rewrite - not allowed at transport time -");
1668 /* If it was an expanded uid, see if there is any expansion to be
1669 done by checking for the presence of a $ character. If there is, save it
1670 in the corresponding *expand_user option field. Otherwise, fall through
1671 to treat it as a fixed uid. Ensure mutual exclusivity of the two kinds
1674 case opt_expand_uid:
1675 sprintf(CS name2, "*expand_%.50s", name);
1676 ol2 = find_option(name2, oltop, last);
1679 uschar *ss = (Ustrchr(sptr, '$') != NULL)? sptr : NULL;
1681 if (data_block == NULL)
1682 *((uschar **)(ol2->value)) = ss;
1684 *((uschar **)((uschar *)data_block + (long int)(ol2->value))) = ss;
1688 *(get_set_flag(name, oltop, last, data_block)) = FALSE;
1694 /* Look up a fixed uid, and also make use of the corresponding gid
1695 if a passwd entry is returned and the gid has not been set. */
1698 if (!route_finduser(sptr, &pw, &uid))
1699 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "user %s was not found", sptr);
1700 if (data_block == NULL)
1701 *((uid_t *)(ol->value)) = uid;
1703 *((uid_t *)((uschar *)data_block + (long int)(ol->value))) = uid;
1705 /* Set the flag indicating a fixed value is set */
1707 *(get_set_flag(name, oltop, last, data_block)) = TRUE;
1709 /* Handle matching gid if we have a passwd entry: done by finding the
1710 same name with terminating "user" changed to "group"; if not found,
1711 ignore. Also ignore if the value is already set. */
1713 if (pw == NULL) break;
1714 Ustrcpy(name+Ustrlen(name)-4, "group");
1715 ol2 = find_option(name, oltop, last);
1716 if (ol2 != NULL && ((ol2->type & opt_mask) == opt_gid ||
1717 (ol2->type & opt_mask) == opt_expand_gid))
1719 BOOL *set_flag = get_set_flag(name, oltop, last, data_block);
1722 if (data_block == NULL)
1723 *((gid_t *)(ol2->value)) = pw->pw_gid;
1725 *((gid_t *)((uschar *)data_block + (long int)(ol2->value))) = pw->pw_gid;
1731 /* If it was an expanded gid, see if there is any expansion to be
1732 done by checking for the presence of a $ character. If there is, save it
1733 in the corresponding *expand_user option field. Otherwise, fall through
1734 to treat it as a fixed gid. Ensure mutual exclusivity of the two kinds
1737 case opt_expand_gid:
1738 sprintf(CS name2, "*expand_%.50s", name);
1739 ol2 = find_option(name2, oltop, last);
1742 uschar *ss = (Ustrchr(sptr, '$') != NULL)? sptr : NULL;
1744 if (data_block == NULL)
1745 *((uschar **)(ol2->value)) = ss;
1747 *((uschar **)((uschar *)data_block + (long int)(ol2->value))) = ss;
1751 *(get_set_flag(name, oltop, last, data_block)) = FALSE;
1757 /* Handle freestanding gid */
1760 if (!route_findgroup(sptr, &gid))
1761 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "group %s was not found", sptr);
1762 if (data_block == NULL)
1763 *((gid_t *)(ol->value)) = gid;
1765 *((gid_t *)((uschar *)data_block + (long int)(ol->value))) = gid;
1766 *(get_set_flag(name, oltop, last, data_block)) = TRUE;
1769 /* If it was a uid list, look up each individual entry, and build
1770 a vector of uids, with a count in the first element. Put the vector
1771 in malloc store so we can free the string. (We are reading into
1772 permanent store already.) */
1780 const uschar *op = expand_string (sptr);
1783 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "failed to expand %s: %s",
1784 name, expand_string_message);
1787 if (*p != 0) count++;
1788 while (*p != 0) if (*p++ == ':' && *p != 0) count++;
1789 list = store_malloc(count*sizeof(uid_t));
1790 list[ptr++] = (uid_t)(count - 1);
1792 if (data_block == NULL)
1793 *((uid_t **)(ol->value)) = list;
1795 *((uid_t **)((uschar *)data_block + (long int)(ol->value))) = list;
1801 (void)string_nextinlist(&p, &sep, big_buffer, BIG_BUFFER_SIZE);
1802 if (!route_finduser(big_buffer, NULL, &uid))
1803 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "user %s was not found",
1810 /* If it was a gid list, look up each individual entry, and build
1811 a vector of gids, with a count in the first element. Put the vector
1812 in malloc store so we can free the string. (We are reading into permanent
1821 const uschar *op = expand_string (sptr);
1824 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "failed to expand %s: %s",
1825 name, expand_string_message);
1828 if (*p != 0) count++;
1829 while (*p != 0) if (*p++ == ':' && *p != 0) count++;
1830 list = store_malloc(count*sizeof(gid_t));
1831 list[ptr++] = (gid_t)(count - 1);
1833 if (data_block == NULL)
1834 *((gid_t **)(ol->value)) = list;
1836 *((gid_t **)((uschar *)data_block + (long int)(ol->value))) = list;
1842 (void)string_nextinlist(&p, &sep, big_buffer, BIG_BUFFER_SIZE);
1843 if (!route_findgroup(big_buffer, &gid))
1844 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "group %s was not found",
1852 /* Release store if the value of the string doesn't need to be kept. */
1854 if (freesptr) store_reset(reset_point);
1857 /* Expanded boolean: if no characters follow, or if there are no dollar
1858 characters, this is a fixed-valued boolean, and we fall through. Otherwise,
1859 save the string for later expansion in the alternate place. */
1861 case opt_expand_bool:
1862 if (*s != 0 && Ustrchr(s, '$') != 0)
1864 sprintf(CS name2, "*expand_%.50s", name);
1865 ol2 = find_option(name2, oltop, last);
1868 reset_point = sptr = read_string(s, name);
1869 if (data_block == NULL)
1870 *((uschar **)(ol2->value)) = sptr;
1872 *((uschar **)((uschar *)data_block + (long int)(ol2->value))) = sptr;
1879 /* Boolean: if no characters follow, the value is boolvalue. Otherwise
1880 look for yes/not/true/false. Some booleans are stored in a single bit in
1881 a single int. There's a special fudge for verify settings; without a suffix
1882 they set both xx_sender and xx_recipient. The table points to the sender
1883 value; search subsequently for the recipient. There's another special case:
1884 opt_bool_set also notes when a boolean has been set. */
1888 case opt_bool_verify:
1892 s = readconf_readname(name2, 64, s);
1893 if (strcmpic(name2, US"true") == 0 || strcmpic(name2, US"yes") == 0)
1895 else if (strcmpic(name2, US"false") == 0 || strcmpic(name2, US"no") == 0)
1897 else log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1898 "\"%s\" is not a valid value for the \"%s\" option", name2, name);
1899 if (*s != 0) extra_chars_error(s, string_sprintf("\"%s\" ", name2),
1900 US"for boolean option ", name);
1903 /* Handle single-bit type. */
1905 if (type == opt_bit)
1907 int bit = 1 << ((ol->type >> 16) & 31);
1908 int *ptr = (data_block == NULL)?
1909 (int *)(ol->value) :
1910 (int *)((uschar *)data_block + (long int)ol->value);
1911 if (boolvalue) *ptr |= bit; else *ptr &= ~bit;
1915 /* Handle full BOOL types */
1917 if (data_block == NULL)
1918 *((BOOL *)(ol->value)) = boolvalue;
1920 *((BOOL *)((uschar *)data_block + (long int)(ol->value))) = boolvalue;
1924 if (type == opt_bool_verify)
1926 sprintf(CS name2, "%.50s_recipient", name + offset);
1927 ol2 = find_option(name2, oltop, last);
1930 if (data_block == NULL)
1931 *((BOOL *)(ol2->value)) = boolvalue;
1933 *((BOOL *)((uschar *)data_block + (long int)(ol2->value))) = boolvalue;
1937 /* Note that opt_bool_set type is set, if there is somewhere to do so */
1939 else if (type == opt_bool_set)
1941 sprintf(CS name2, "*set_%.50s", name + offset);
1942 ol2 = find_option(name2, oltop, last);
1945 if (data_block == NULL)
1946 *((BOOL *)(ol2->value)) = TRUE;
1948 *((BOOL *)((uschar *)data_block + (long int)(ol2->value))) = TRUE;
1957 inttype = US"octal ";
1959 /* Integer: a simple(ish) case; allow octal and hex formats, and
1960 suffixes K and M. The different types affect output, not input. */
1969 lvalue = strtol(CS s, CSS &endptr, intbase);
1972 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "%sinteger expected for %s",
1975 if (errno != ERANGE)
1977 if (tolower(*endptr) == 'k')
1979 if (lvalue > INT_MAX/1024 || lvalue < INT_MIN/1024) errno = ERANGE;
1980 else lvalue *= 1024;
1983 else if (tolower(*endptr) == 'm')
1985 if (lvalue > INT_MAX/(1024*1024) || lvalue < INT_MIN/(1024*1024))
1987 else lvalue *= 1024*1024;
1992 if (errno == ERANGE || lvalue > INT_MAX || lvalue < INT_MIN)
1993 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1994 "absolute value of integer \"%s\" is too large (overflow)", s);
1996 while (isspace(*endptr)) endptr++;
1998 extra_chars_error(endptr, inttype, US"integer value for ", name);
2000 value = (int)lvalue;
2003 if (data_block == NULL)
2004 *((int *)(ol->value)) = value;
2006 *((int *)((uschar *)data_block + (long int)(ol->value))) = value;
2009 /* Integer held in K: again, allow octal and hex formats, and suffixes K and
2016 value = strtol(CS s, CSS &endptr, intbase);
2019 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "%sinteger expected for %s",
2022 if (errno != ERANGE)
2024 if (tolower(*endptr) == 'm')
2026 if (value > INT_MAX/1024 || value < INT_MIN/1024) errno = ERANGE;
2030 else if (tolower(*endptr) == 'k')
2036 value = (value + 512)/1024;
2040 if (errno == ERANGE) log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
2041 "absolute value of integer \"%s\" is too large (overflow)", s);
2043 while (isspace(*endptr)) endptr++;
2045 extra_chars_error(endptr, inttype, US"integer value for ", name);
2048 if (data_block == NULL)
2049 *((int *)(ol->value)) = value;
2051 *((int *)((uschar *)data_block + (long int)(ol->value))) = value;
2054 /* Fixed-point number: held to 3 decimal places. */
2057 if (sscanf(CS s, "%d%n", &value, &count) != 1)
2058 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
2059 "fixed-point number expected for %s", name);
2061 if (value < 0) log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
2062 "integer \"%s\" is too large (overflow)", s);
2066 if (value < 0) log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
2067 "integer \"%s\" is too large (overflow)", s);
2069 if (s[count] == '.')
2072 while (isdigit(s[++count]))
2074 value += (s[count] - '0') * d;
2079 while (isspace(s[count])) count++;
2082 extra_chars_error(s+count, US"fixed-point value for ", name, US"");
2084 if (data_block == NULL)
2085 *((int *)(ol->value)) = value;
2087 *((int *)((uschar *)data_block + (long int)(ol->value))) = value;
2090 /* There's a special routine to read time values. */
2093 value = readconf_readtime(s, 0, FALSE);
2095 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "invalid time value for %s",
2097 if (data_block == NULL)
2098 *((int *)(ol->value)) = value;
2100 *((int *)((uschar *)data_block + (long int)(ol->value))) = value;
2103 /* A time list is a list of colon-separated times, with the first
2104 element holding the size of the list and the second the number of
2110 int *list = (data_block == NULL)?
2111 (int *)(ol->value) :
2112 (int *)((uschar *)data_block + (long int)(ol->value));
2114 if (*s != 0) for (count = 1; count <= list[0] - 2; count++)
2117 uschar *snext = Ustrchr(s, ':');
2121 while (ss > s && isspace(ss[-1])) ss--;
2124 value = readconf_readtime(s, terminator, FALSE);
2126 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "invalid time value for %s",
2128 if (count > 1 && value <= list[count])
2129 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
2130 "time value out of order for %s", name);
2131 list[count+1] = value;
2132 if (snext == NULL) break;
2134 while (isspace(*s)) s++;
2137 if (count > list[0] - 2)
2138 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "too many time values for %s",
2140 if (count > 0 && list[2] == 0) count = 0;
2147 void (*fn)() = ol->value;
2158 /*************************************************
2159 * Print a time value *
2160 *************************************************/
2163 Argument: a time value in seconds
2164 Returns: pointer to a fixed buffer containing the time as a string,
2165 in readconf_readtime() format
2169 readconf_printtime(int t)
2172 uschar *p = time_buffer;
2189 if (w > 0) { sprintf(CS p, "%dw", w); while (*p) p++; }
2190 if (d > 0) { sprintf(CS p, "%dd", d); while (*p) p++; }
2191 if (h > 0) { sprintf(CS p, "%dh", h); while (*p) p++; }
2192 if (m > 0) { sprintf(CS p, "%dm", m); while (*p) p++; }
2193 if (s > 0 || p == time_buffer) sprintf(CS p, "%ds", s);
2200 /*************************************************
2201 * Print an individual option value *
2202 *************************************************/
2204 /* This is used by the -bP option, so prints to the standard output.
2205 The entire options list is passed in as an argument, because some options come
2206 in pairs - typically uid/gid settings, which can either be explicit numerical
2207 values, or strings to be expanded later. If the numerical value is unset,
2208 search for "*expand_<name>" to see if there is a string equivalent.
2211 ol option entry, or NULL for an unknown option
2213 options_block NULL for main configuration options; otherwise points to
2214 a driver block; if the option doesn't have opt_public
2215 set, then options_block->options_block is where the item
2217 oltop points to the option list in which ol exists
2218 last one more than the offset of the last entry in optop
2219 no_labels do not show "foo = " at the start.
2225 print_ol(optionlist *ol, uschar *name, void *options_block,
2226 optionlist *oltop, int last, BOOL no_labels)
2239 printf("%s is not a known option\n", name);
2243 /* Non-admin callers cannot see options that have been flagged secure by the
2246 if (!admin_user && (ol->type & opt_secure) != 0)
2248 const char * const hidden = "<value not displayable>";
2250 printf("%s\n", hidden);
2252 printf("%s = %s\n", name, hidden);
2256 /* Else show the value of the option */
2259 if (options_block != NULL)
2261 if ((ol->type & opt_public) == 0)
2262 options_block = (void *)(((driver_instance *)options_block)->options_block);
2263 value = (void *)((uschar *)options_block + (long int)value);
2266 switch(ol->type & opt_mask)
2269 case opt_rewrite: /* Show the text value */
2270 s = *((uschar **)value);
2271 if (!no_labels) printf("%s = ", name);
2272 printf("%s\n", (s == NULL)? US"" : string_printing2(s, FALSE));
2276 if (!no_labels) printf("%s = ", name);
2277 printf("%d\n", *((int *)value));
2282 int x = *((int *)value);
2283 if (x != 0 && (x & 1023) == 0)
2287 if ((x & 1023) == 0)
2292 if (!no_labels) printf("%s = ", name);
2293 printf("%d%c\n", x, c);
2297 if (!no_labels) printf("%s = ", name);
2305 int x = *((int *)value);
2306 if (!no_labels) printf("%s = ", name);
2307 if (x == 0) printf("0\n");
2308 else if ((x & 1023) == 0) printf("%dM\n", x >> 10);
2309 else printf("%dK\n", x);
2314 if (!no_labels) printf("%s = ", name);
2315 printf("%#o\n", *((int *)value));
2318 /* Can be negative only when "unset", in which case integer */
2322 int x = *((int *)value);
2325 if (x < 0) printf("%s =\n", name); else
2327 if (!no_labels) printf("%s = ", name);
2328 printf("%d.", x/1000);
2341 /* If the numerical value is unset, try for the string value */
2343 case opt_expand_uid:
2344 if (! *get_set_flag(name, oltop, last, options_block))
2346 sprintf(CS name2, "*expand_%.50s", name);
2347 ol2 = find_option(name2, oltop, last);
2350 void *value2 = ol2->value;
2351 if (options_block != NULL)
2352 value2 = (void *)((uschar *)options_block + (long int)value2);
2353 s = *((uschar **)value2);
2354 if (!no_labels) printf("%s = ", name);
2355 printf("%s\n", (s == NULL)? US"" : string_printing(s));
2360 /* Else fall through */
2363 if (!no_labels) printf("%s = ", name);
2364 if (! *get_set_flag(name, oltop, last, options_block))
2368 pw = getpwuid(*((uid_t *)value));
2370 printf("%ld\n", (long int)(*((uid_t *)value)));
2371 else printf("%s\n", pw->pw_name);
2375 /* If the numerical value is unset, try for the string value */
2377 case opt_expand_gid:
2378 if (! *get_set_flag(name, oltop, last, options_block))
2380 sprintf(CS name2, "*expand_%.50s", name);
2381 ol2 = find_option(name2, oltop, last);
2382 if (ol2 != NULL && (ol2->type & opt_mask) == opt_stringptr)
2384 void *value2 = ol2->value;
2385 if (options_block != NULL)
2386 value2 = (void *)((uschar *)options_block + (long int)value2);
2387 s = *((uschar **)value2);
2388 if (!no_labels) printf("%s = ", name);
2389 printf("%s\n", (s == NULL)? US"" : string_printing(s));
2394 /* Else fall through */
2397 if (!no_labels) printf("%s = ", name);
2398 if (! *get_set_flag(name, oltop, last, options_block))
2402 gr = getgrgid(*((int *)value));
2404 printf("%ld\n", (long int)(*((int *)value)));
2405 else printf("%s\n", gr->gr_name);
2410 uidlist = *((uid_t **)value);
2411 if (!no_labels) printf("%s =", name);
2412 if (uidlist != NULL)
2416 if (no_labels) sep = '\0';
2417 for (i = 1; i <= (int)(uidlist[0]); i++)
2419 uschar *name = NULL;
2420 pw = getpwuid(uidlist[i]);
2421 if (pw != NULL) name = US pw->pw_name;
2422 if (sep != '\0') printf("%c", sep);
2423 if (name != NULL) printf("%s", name);
2424 else printf("%ld", (long int)(uidlist[i]));
2432 gidlist = *((gid_t **)value);
2433 if (!no_labels) printf("%s =", name);
2434 if (gidlist != NULL)
2438 if (no_labels) sep = '\0';
2439 for (i = 1; i <= (int)(gidlist[0]); i++)
2441 uschar *name = NULL;
2442 gr = getgrgid(gidlist[i]);
2443 if (gr != NULL) name = US gr->gr_name;
2444 if (sep != '\0') printf("%c", sep);
2445 if (name != NULL) printf("%s", name);
2446 else printf("%ld", (long int)(gidlist[i]));
2454 if (!no_labels) printf("%s = ", name);
2455 printf("%s\n", readconf_printtime(*((int *)value)));
2461 int *list = (int *)value;
2462 if (!no_labels) printf("%s = ", name);
2463 for (i = 0; i < list[1]; i++)
2464 printf("%s%s", (i == 0)? "" : ":", readconf_printtime(list[i+2]));
2470 printf("%s%s\n", ((*((int *)value)) & (1 << ((ol->type >> 16) & 31)))?
2474 case opt_expand_bool:
2475 sprintf(CS name2, "*expand_%.50s", name);
2476 ol2 = find_option(name2, oltop, last);
2477 if (ol2 != NULL && ol2->value != NULL)
2479 void *value2 = ol2->value;
2480 if (options_block != NULL)
2481 value2 = (void *)((uschar *)options_block + (long int)value2);
2482 s = *((uschar **)value2);
2485 if (!no_labels) printf("%s = ", name);
2486 printf("%s\n", string_printing(s));
2489 /* s == NULL => string not set; fall through */
2495 case opt_bool_verify:
2497 printf("%s%s\n", (*((BOOL *)value))? "" : "no_", name);
2504 /*************************************************
2505 * Print value from main configuration *
2506 *************************************************/
2508 /* This function, called as a result of encountering the -bP option,
2509 causes the value of any main configuration variable to be output if the
2510 second argument is NULL. There are some special values:
2512 all print all main configuration options
2513 configure_file print the name of the configuration file
2514 routers print the routers' configurations
2515 transports print the transports' configuration
2516 authenticators print the authenticators' configuration
2517 macros print the macros' configuration
2518 router_list print a list of router names
2519 transport_list print a list of transport names
2520 authenticator_list print a list of authentication mechanism names
2521 macro_list print a list of macro names
2522 +name print a named list item
2523 local_scan print the local_scan options
2525 If the second argument is not NULL, it must be one of "router", "transport",
2526 "authenticator" or "macro" in which case the first argument identifies the
2527 driver whose options are to be printed.
2530 name option name if type == NULL; else driver name
2531 type NULL or driver type name, as described above
2532 no_labels avoid the "foo = " at the start of an item
2538 readconf_print(uschar *name, uschar *type, BOOL no_labels)
2540 BOOL names_only = FALSE;
2542 optionlist *ol2 = NULL;
2543 driver_instance *d = NULL;
2554 static uschar *types[] = { US"address", US"domain", US"host",
2556 static tree_node **anchors[] = { &addresslist_anchor, &domainlist_anchor,
2557 &hostlist_anchor, &localpartlist_anchor };
2559 for (i = 0; i < 4; i++)
2561 t = tree_search(*(anchors[i]), name+1);
2566 printf("%s\n", ((namedlist_block *)(t->data.ptr))->string);
2568 printf("%slist %s = %s\n", types[i], name+1,
2569 ((namedlist_block *)(t->data.ptr))->string);
2574 printf("no address, domain, host, or local part list called \"%s\" "
2575 "exists\n", name+1);
2580 if (Ustrcmp(name, "configure_file") == 0)
2582 printf("%s\n", CS config_main_filename);
2586 if (Ustrcmp(name, "all") == 0)
2588 for (ol = optionlist_config;
2589 ol < optionlist_config + optionlist_config_size; ol++)
2591 if ((ol->type & opt_hidden) == 0)
2592 print_ol(ol, US ol->name, NULL,
2593 optionlist_config, optionlist_config_size,
2599 if (Ustrcmp(name, "local_scan") == 0)
2601 #ifndef LOCAL_SCAN_HAS_OPTIONS
2602 printf("local_scan() options are not supported\n");
2604 for (ol = local_scan_options;
2605 ol < local_scan_options + local_scan_options_count; ol++)
2607 print_ol(ol, US ol->name, NULL, local_scan_options,
2608 local_scan_options_count, no_labels);
2614 if (Ustrcmp(name, "routers") == 0)
2619 else if (Ustrcmp(name, "transports") == 0)
2621 type = US"transport";
2625 else if (Ustrcmp(name, "authenticators") == 0)
2627 type = US"authenticator";
2631 else if (Ustrcmp(name, "macros") == 0)
2637 else if (Ustrcmp(name, "router_list") == 0)
2644 else if (Ustrcmp(name, "transport_list") == 0)
2646 type = US"transport";
2651 else if (Ustrcmp(name, "authenticator_list") == 0)
2653 type = US"authenticator";
2658 else if (Ustrcmp(name, "macro_list") == 0)
2667 print_ol(find_option(name, optionlist_config, optionlist_config_size),
2668 name, NULL, optionlist_config, optionlist_config_size, no_labels);
2673 /* Handle the options for a router or transport. Skip options that are flagged
2674 as hidden. Some of these are options with names starting with '*', used for
2675 internal alternative representations of other options (which the printing
2676 function will sort out). Others are synonyms kept for backward compatibility.
2679 if (Ustrcmp(type, "router") == 0)
2681 d = (driver_instance *)routers;
2682 ol2 = optionlist_routers;
2683 size = optionlist_routers_size;
2685 else if (Ustrcmp(type, "transport") == 0)
2687 d = (driver_instance *)transports;
2688 ol2 = optionlist_transports;
2689 size = optionlist_transports_size;
2691 else if (Ustrcmp(type, "authenticator") == 0)
2693 d = (driver_instance *)auths;
2694 ol2 = optionlist_auths;
2695 size = optionlist_auths_size;
2698 else if (Ustrcmp(type, "macro") == 0)
2700 /* People store passwords in macros and they were previously not available
2701 for printing. So we have an admin_users restriction. */
2704 fprintf(stderr, "exim: permission denied\n");
2707 for (m = macros; m != NULL; m = m->next)
2709 if (name == NULL || Ustrcmp(name, m->name) == 0)
2712 printf("%s\n", CS m->name);
2714 printf("%s=%s\n", CS m->name, CS m->replacement);
2720 printf("%s %s not found\n", type, name);
2726 for (; d != NULL; d = d->next) printf("%s\n", CS d->name);
2730 /* Either search for a given driver, or print all of them */
2732 for (; d != NULL; d = d->next)
2735 printf("\n%s %s:\n", d->name, type);
2736 else if (Ustrcmp(d->name, name) != 0) continue;
2738 for (ol = ol2; ol < ol2 + size; ol++)
2740 if ((ol->type & opt_hidden) == 0)
2741 print_ol(ol, US ol->name, d, ol2, size, no_labels);
2744 for (ol = d->info->options;
2745 ol < d->info->options + *(d->info->options_count); ol++)
2747 if ((ol->type & opt_hidden) == 0)
2748 print_ol(ol, US ol->name, d, d->info->options, *(d->info->options_count), no_labels);
2750 if (name != NULL) return;
2752 if (name != NULL) printf("%s %s not found\n", type, name);
2757 /*************************************************
2758 * Read a named list item *
2759 *************************************************/
2761 /* This function reads a name and a list (i.e. string). The name is used to
2762 save the list in a tree, sorted by its name. Each entry also has a number,
2763 which can be used for caching tests, but if the string contains any expansion
2764 items other than $key, the number is set negative to inhibit caching. This
2765 mechanism is used for domain, host, and address lists that are referenced by
2769 anchorp points to the tree anchor
2770 numberp points to the current number for this tree
2771 max the maximum number permitted
2772 s the text of the option line, starting immediately after the name
2774 tname the name of the list type, for messages
2780 read_named_list(tree_node **anchorp, int *numberp, int max, uschar *s,
2783 BOOL forcecache = FALSE;
2786 namedlist_block *nb = store_get(sizeof(namedlist_block));
2788 if (Ustrncmp(s, "_cache", 6) == 0)
2795 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "unrecognized configuration line");
2797 if (*numberp >= max)
2798 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "too many named %ss (max is %d)\n",
2801 while (isspace(*s)) s++;
2803 while (isalnum(*s) || *s == '_') s++;
2804 t = store_get(sizeof(tree_node) + s-ss);
2805 Ustrncpy(t->name, ss, s-ss);
2807 while (isspace(*s)) s++;
2809 if (!tree_insertnode(anchorp, t))
2810 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
2811 "duplicate name \"%s\" for a named %s", t->name, tname);
2814 nb->number = *numberp;
2817 if (*s++ != '=') log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
2818 "missing '=' after \"%s\"", t->name);
2819 while (isspace(*s)) s++;
2820 nb->string = read_string(s, t->name);
2821 nb->cache_data = NULL;
2823 /* Check the string for any expansions; if any are found, mark this list
2824 uncacheable unless the user has explicited forced caching. */
2826 if (!forcecache && Ustrchr(nb->string, '$') != NULL) nb->number = -1;
2832 /*************************************************
2833 * Unpick data for a rate limit *
2834 *************************************************/
2836 /* This function is called to unpick smtp_ratelimit_{mail,rcpt} into four
2840 s string, in the form t,b,f,l
2841 where t is the threshold (integer)
2842 b is the initial delay (time)
2843 f is the multiplicative factor (fixed point)
2844 k is the maximum time (time)
2845 threshold where to store threshold
2846 base where to store base in milliseconds
2847 factor where to store factor in milliseconds
2848 limit where to store limit
2850 Returns: nothing (panics on error)
2854 unpick_ratelimit(uschar *s, int *threshold, int *base, double *factor,
2857 uschar bstring[16], lstring[16];
2859 if (sscanf(CS s, "%d, %15[0123456789smhdw.], %lf, %15s", threshold, bstring,
2860 factor, lstring) == 4)
2862 *base = readconf_readtime(bstring, 0, TRUE);
2863 *limit = readconf_readtime(lstring, 0, TRUE);
2864 if (*base >= 0 && *limit >= 0) return;
2866 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "malformed ratelimit data: %s", s);
2872 /*************************************************
2873 * Drop privs for checking TLS config *
2874 *************************************************/
2876 /* We want to validate TLS options during readconf, but do not want to be
2877 root when we call into the TLS library, in case of library linkage errors
2878 which cause segfaults; before this check, those were always done as the Exim
2879 runtime user and it makes sense to continue with that.
2881 Assumes: tls_require_ciphers has been set, if it will be
2882 exim_user has been set, if it will be
2883 exim_group has been set, if it will be
2885 Returns: bool for "okay"; false will cause caller to immediately exit.
2890 tls_dropprivs_validate_require_cipher(void)
2892 const uschar *errmsg;
2895 void (*oldsignal)(int);
2897 oldsignal = signal(SIGCHLD, SIG_DFL);
2900 if ((pid = fork()) < 0)
2901 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "fork failed for TLS check");
2905 /* in some modes, will have dropped privilege already */
2907 exim_setugid(exim_uid, exim_gid, FALSE,
2908 US"calling tls_validate_require_cipher");
2910 errmsg = tls_validate_require_cipher();
2913 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
2914 "tls_require_ciphers invalid: %s", errmsg);
2921 rc = waitpid(pid, &status, 0);
2922 } while (rc < 0 && errno == EINTR);
2925 debug_printf("tls_validate_require_cipher child %d ended: status=0x%x\n",
2928 signal(SIGCHLD, oldsignal);
2932 #endif /* SUPPORT_TLS */
2937 /*************************************************
2938 * Read main configuration options *
2939 *************************************************/
2941 /* This function is the first to be called for configuration reading. It
2942 opens the configuration file and reads general configuration settings until
2943 it reaches the end of the configuration section. The file is then left open so
2944 that the remaining configuration data can subsequently be read if needed for
2947 The configuration file must be owned either by root or exim, and be writeable
2948 only by root or uid/gid exim. The values for Exim's uid and gid can be changed
2949 in the config file, so the test is done on the compiled in values. A slight
2950 anomaly, to be carefully documented.
2952 The name of the configuration file is taken from a list that is included in the
2953 binary of Exim. It can be altered from the command line, but if that is done,
2954 root privilege is immediately withdrawn unless the caller is root or exim.
2955 The first file on the list that exists is used.
2957 For use on multiple systems that share file systems, first look for a
2958 configuration file whose name has the current node name on the end. If that is
2959 not found, try the generic name. For really contorted configurations, that run
2960 multiple Exims with different uid settings, first try adding the effective uid
2961 before the node name. These complications are going to waste resources on most
2962 systems. Therefore they are available only when requested by compile-time
2969 struct stat statbuf;
2970 uschar *s, *filename;
2971 const uschar *list = config_main_filelist;
2973 /* Loop through the possible file names */
2975 while((filename = string_nextinlist(&list, &sep, big_buffer, big_buffer_size))
2978 /* Cut out all the fancy processing unless specifically wanted */
2980 #if defined(CONFIGURE_FILE_USE_NODE) || defined(CONFIGURE_FILE_USE_EUID)
2981 uschar *suffix = filename + Ustrlen(filename);
2983 /* Try for the node-specific file if a node name exists */
2985 #ifdef CONFIGURE_FILE_USE_NODE
2987 if (uname(&uts) >= 0)
2989 #ifdef CONFIGURE_FILE_USE_EUID
2990 sprintf(CS suffix, ".%ld.%.256s", (long int)original_euid, uts.nodename);
2991 config_file = Ufopen(filename, "rb");
2992 if (config_file == NULL)
2993 #endif /* CONFIGURE_FILE_USE_EUID */
2995 sprintf(CS suffix, ".%.256s", uts.nodename);
2996 config_file = Ufopen(filename, "rb");
2999 #endif /* CONFIGURE_FILE_USE_NODE */
3001 /* Otherwise, try the generic name, possibly with the euid added */
3003 #ifdef CONFIGURE_FILE_USE_EUID
3004 if (config_file == NULL)
3006 sprintf(CS suffix, ".%ld", (long int)original_euid);
3007 config_file = Ufopen(filename, "rb");
3009 #endif /* CONFIGURE_FILE_USE_EUID */
3011 /* Finally, try the unadorned name */
3013 if (config_file == NULL)
3016 config_file = Ufopen(filename, "rb");
3018 #else /* if neither defined */
3020 /* This is the common case when the fancy processing is not included. */
3022 config_file = Ufopen(filename, "rb");
3025 /* If the file does not exist, continue to try any others. For any other
3026 error, break out (and die). */
3028 if (config_file != NULL || errno != ENOENT) break;
3031 /* On success, save the name for verification; config_filename is used when
3032 logging configuration errors (it changes for .included files) whereas
3033 config_main_filename is the name shown by -bP. Failure to open a configuration
3034 file is a serious disaster. */
3036 if (config_file != NULL)
3039 config_filename = config_main_filename = string_copy(filename);
3041 p = Ustrrchr(filename, '/');
3042 config_main_directory = p ? string_copyn(filename, p - filename)
3043 : string_copy(US".");
3047 if (filename == NULL)
3048 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "non-existent configuration file(s): "
3049 "%s", config_main_filelist);
3051 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "%s", string_open_failed(errno,
3052 "configuration file %s", filename));
3055 /* Check the status of the file we have opened, if we have retained root
3056 privileges and the file isn't /dev/null (which *should* be 0666). */
3058 if (trusted_config && Ustrcmp(filename, US"/dev/null"))
3060 if (fstat(fileno(config_file), &statbuf) != 0)
3061 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "failed to stat configuration file %s",
3064 if ((statbuf.st_uid != root_uid /* owner not root */
3065 #ifdef CONFIGURE_OWNER
3066 && statbuf.st_uid != config_uid /* owner not the special one */
3069 (statbuf.st_gid != root_gid /* group not root & */
3070 #ifdef CONFIGURE_GROUP
3071 && statbuf.st_gid != config_gid /* group not the special one */
3073 && (statbuf.st_mode & 020) != 0) || /* group writeable */
3075 ((statbuf.st_mode & 2) != 0)) /* world writeable */
3077 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "Exim configuration file %s has the "
3078 "wrong owner, group, or mode", big_buffer);
3081 /* Process the main configuration settings. They all begin with a lower case
3082 letter. If we see something starting with an upper case letter, it is taken as
3083 a macro definition. */
3085 while ((s = get_config_line()) != NULL)
3087 if (isupper(s[0])) read_macro_assignment(s);
3089 else if (Ustrncmp(s, "domainlist", 10) == 0)
3090 read_named_list(&domainlist_anchor, &domainlist_count,
3091 MAX_NAMED_LIST, s+10, US"domain list");
3093 else if (Ustrncmp(s, "hostlist", 8) == 0)
3094 read_named_list(&hostlist_anchor, &hostlist_count,
3095 MAX_NAMED_LIST, s+8, US"host list");
3097 else if (Ustrncmp(s, US"addresslist", 11) == 0)
3098 read_named_list(&addresslist_anchor, &addresslist_count,
3099 MAX_NAMED_LIST, s+11, US"address list");
3101 else if (Ustrncmp(s, US"localpartlist", 13) == 0)
3102 read_named_list(&localpartlist_anchor, &localpartlist_count,
3103 MAX_NAMED_LIST, s+13, US"local part list");
3106 (void) readconf_handle_option(s, optionlist_config, optionlist_config_size,
3107 NULL, US"main option \"%s\" unknown");
3111 /* If local_sender_retain is set, local_from_check must be unset. */
3113 if (local_sender_retain && local_from_check)
3114 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "both local_from_check and "
3115 "local_sender_retain are set; this combination is not allowed");
3117 /* If the timezone string is empty, set it to NULL, implying no TZ variable
3120 if (timezone_string != NULL && *timezone_string == 0) timezone_string = NULL;
3122 /* The max retry interval must not be greater than 24 hours. */
3124 if (retry_interval_max > 24*60*60) retry_interval_max = 24*60*60;
3126 /* remote_max_parallel must be > 0 */
3128 if (remote_max_parallel <= 0) remote_max_parallel = 1;
3130 /* Save the configured setting of freeze_tell, so we can re-instate it at the
3131 start of a new SMTP message. */
3133 freeze_tell_config = freeze_tell;
3135 /* The primary host name may be required for expansion of spool_directory
3136 and log_file_path, so make sure it is set asap. It is obtained from uname(),
3137 but if that yields an unqualified value, make a FQDN by using gethostbyname to
3138 canonize it. Some people like upper case letters in their host names, so we
3139 don't force the case. */
3141 if (primary_hostname == NULL)
3143 const uschar *hostname;
3145 if (uname(&uts) < 0)
3146 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "uname() failed to yield host name");
3147 hostname = US uts.nodename;
3149 if (Ustrchr(hostname, '.') == NULL)
3152 struct hostent *hostdata;
3155 if (!disable_ipv6 && (dns_ipv4_lookup == NULL ||
3156 match_isinlist(hostname, CUSS &dns_ipv4_lookup, 0, NULL, NULL,
3157 MCL_DOMAIN, TRUE, NULL) != OK))
3166 #if HAVE_GETIPNODEBYNAME
3168 hostdata = getipnodebyname(CS hostname, af, 0, &error_num);
3170 hostdata = gethostbyname2(CS hostname, af);
3173 hostdata = gethostbyname(CS hostname);
3176 if (hostdata != NULL)
3178 hostname = US hostdata->h_name;
3182 if (af == AF_INET) break;
3187 primary_hostname = string_copy(hostname);
3190 /* Set up default value for smtp_active_hostname */
3192 smtp_active_hostname = primary_hostname;
3194 /* If spool_directory wasn't set in the build-time configuration, it must have
3195 got set above. Of course, writing to the log may not work if log_file_path is
3196 not set, but it will at least get to syslog or somewhere, with any luck. */
3198 if (*spool_directory == 0)
3199 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "spool_directory undefined: cannot "
3202 /* Expand the spool directory name; it may, for example, contain the primary
3203 host name. Same comment about failure. */
3205 s = expand_string(spool_directory);
3207 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "failed to expand spool_directory "
3208 "\"%s\": %s", spool_directory, expand_string_message);
3209 spool_directory = s;
3211 /* Expand log_file_path, which must contain "%s" in any component that isn't
3212 the null string or "syslog". It is also allowed to contain one instance of %D
3213 or %M. However, it must NOT contain % followed by anything else. */
3215 if (*log_file_path != 0)
3217 const uschar *ss, *sss;
3218 int sep = ':'; /* Fixed for log file path */
3219 s = expand_string(log_file_path);
3221 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "failed to expand log_file_path "
3222 "\"%s\": %s", log_file_path, expand_string_message);
3225 while ((sss = string_nextinlist(&ss,&sep,big_buffer,big_buffer_size)) != NULL)
3228 if (sss[0] == 0 || Ustrcmp(sss, "syslog") == 0) continue;
3229 t = Ustrstr(sss, "%s");
3231 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "log_file_path \"%s\" does not "
3232 "contain \"%%s\"", sss);
3234 t = Ustrchr(sss, '%');
3237 if ((t[1] != 'D' && t[1] != 'M') || Ustrchr(t+2, '%') != NULL)
3238 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "log_file_path \"%s\" contains "
3239 "unexpected \"%%\" character", s);
3246 /* Interpret syslog_facility into an integer argument for 'ident' param to
3247 openlog(). Default is LOG_MAIL set in globals.c. Allow the user to omit the
3250 if (syslog_facility_str != NULL)
3253 uschar *s = syslog_facility_str;
3255 if ((Ustrlen(syslog_facility_str) >= 4) &&
3256 (strncmpic(syslog_facility_str, US"log_", 4) == 0))
3259 for (i = 0; i < syslog_list_size; i++)
3261 if (strcmpic(s, syslog_list[i].name) == 0)
3263 syslog_facility = syslog_list[i].value;
3268 if (i >= syslog_list_size)
3270 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
3271 "failed to interpret syslog_facility \"%s\"", syslog_facility_str);
3275 /* Expand pid_file_path */
3277 if (*pid_file_path != 0)
3279 s = expand_string(pid_file_path);
3281 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "failed to expand pid_file_path "
3282 "\"%s\": %s", pid_file_path, expand_string_message);
3286 /* Set default value of process_log_path */
3288 if (process_log_path == NULL || *process_log_path =='\0')
3289 process_log_path = string_sprintf("%s/exim-process.info", spool_directory);
3291 /* Compile the regex for matching a UUCP-style "From_" line in an incoming
3294 regex_From = regex_must_compile(uucp_from_pattern, FALSE, TRUE);
3296 /* Unpick the SMTP rate limiting options, if set */
3298 if (smtp_ratelimit_mail != NULL)
3300 unpick_ratelimit(smtp_ratelimit_mail, &smtp_rlm_threshold,
3301 &smtp_rlm_base, &smtp_rlm_factor, &smtp_rlm_limit);
3304 if (smtp_ratelimit_rcpt != NULL)
3306 unpick_ratelimit(smtp_ratelimit_rcpt, &smtp_rlr_threshold,
3307 &smtp_rlr_base, &smtp_rlr_factor, &smtp_rlr_limit);
3310 /* The qualify domains default to the primary host name */
3312 if (qualify_domain_sender == NULL)
3313 qualify_domain_sender = primary_hostname;
3314 if (qualify_domain_recipient == NULL)
3315 qualify_domain_recipient = qualify_domain_sender;
3317 /* Setting system_filter_user in the configuration sets the gid as well if a
3318 name is given, but a numerical value does not. */
3320 if (system_filter_uid_set && !system_filter_gid_set)
3322 struct passwd *pw = getpwuid(system_filter_uid);
3324 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "Failed to look up uid %ld",
3325 (long int)system_filter_uid);
3326 system_filter_gid = pw->pw_gid;
3327 system_filter_gid_set = TRUE;
3330 /* If the errors_reply_to field is set, check that it is syntactically valid
3331 and ensure it contains a domain. */
3333 if (errors_reply_to != NULL)
3336 int start, end, domain;
3337 uschar *recipient = parse_extract_address(errors_reply_to, &errmess,
3338 &start, &end, &domain, FALSE);
3340 if (recipient == NULL)
3341 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
3342 "error in errors_reply_to (%s): %s", errors_reply_to, errmess);
3345 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
3346 "errors_reply_to (%s) does not contain a domain", errors_reply_to);
3349 /* If smtp_accept_queue or smtp_accept_max_per_host is set, then
3350 smtp_accept_max must also be set. */
3352 if (smtp_accept_max == 0 &&
3353 (smtp_accept_queue > 0 || smtp_accept_max_per_host != NULL))
3354 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
3355 "smtp_accept_max must be set if smtp_accept_queue or "
3356 "smtp_accept_max_per_host is set");
3358 /* Set up the host number if anything is specified. It is an expanded string
3359 so that it can be computed from the host name, for example. We do this last
3360 so as to ensure that everything else is set up before the expansion. */
3362 if (host_number_string != NULL)
3366 uschar *s = expand_string(host_number_string);
3368 log_write(0, LOG_MAIN|LOG_PANIC_DIE,
3369 "failed to expand localhost_number \"%s\": %s",
3370 host_number_string, expand_string_message);
3371 n = Ustrtol(s, &end, 0);
3372 while (isspace(*end)) end++;
3374 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
3375 "localhost_number value is not a number: %s", s);
3376 if (n > LOCALHOST_MAX)
3377 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
3378 "localhost_number is greater than the maximum allowed value (%d)",
3384 /* If tls_verify_hosts is set, tls_verify_certificates must also be set */
3386 if ((tls_verify_hosts != NULL || tls_try_verify_hosts != NULL) &&
3387 tls_verify_certificates == NULL)
3388 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
3389 "tls_%sverify_hosts is set, but tls_verify_certificates is not set",
3390 (tls_verify_hosts != NULL)? "" : "try_");
3392 /* This also checks that the library linkage is working and we can call
3393 routines in it, so call even if tls_require_ciphers is unset */
3394 if (!tls_dropprivs_validate_require_cipher())
3397 /* Magic number: at time of writing, 1024 has been the long-standing value
3398 used by so many clients, and what Exim used to use always, that it makes
3399 sense to just min-clamp this max-clamp at that. */
3400 if (tls_dh_max_bits < 1024)
3401 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
3402 "tls_dh_max_bits is too small, must be at least 1024 for interop");
3404 /* If openssl_options is set, validate it */
3405 if (openssl_options != NULL)
3408 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
3409 "openssl_options is set but we're using GnuTLS");
3412 if (!(tls_openssl_options_parse(openssl_options, &dummy)))
3413 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
3414 "openssl_options parse error: %s", openssl_options);
3418 if (gnutls_require_kx || gnutls_require_mac || gnutls_require_proto)
3419 log_write(0, LOG_MAIN, "WARNING: main options"
3420 " gnutls_require_kx, gnutls_require_mac and gnutls_require_protocols"
3422 #endif /*SUPPORT_TLS*/
3427 /*************************************************
3428 * Initialize one driver *
3429 *************************************************/
3431 /* This is called once the driver's generic options, if any, have been read.
3432 We can now find the driver, set up defaults for the private options, and
3433 unset any "set" bits in the private options table (which might have been
3434 set by another incarnation of the same driver).
3437 d pointer to driver instance block, with generic
3439 drivers_available vector of available drivers
3440 size_of_info size of each block in drivers_available
3441 class class of driver, for error message
3443 Returns: pointer to the driver info block
3446 static driver_info *
3447 init_driver(driver_instance *d, driver_info *drivers_available,
3448 int size_of_info, uschar *class)
3452 for (dd = drivers_available; dd->driver_name[0] != 0;
3453 dd = (driver_info *)(((uschar *)dd) + size_of_info))
3455 if (Ustrcmp(d->driver_name, dd->driver_name) == 0)
3458 int len = dd->options_len;
3460 d->options_block = store_get(len);
3461 memcpy(d->options_block, dd->options_block, len);
3462 for (i = 0; i < *(dd->options_count); i++)
3463 dd->options[i].type &= ~opt_set;
3468 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
3469 "%s %s: cannot find %s driver \"%s\"", class, d->name, class, d->driver_name);
3471 return NULL; /* never obeyed */
3477 /*************************************************
3478 * Initialize driver list *
3479 *************************************************/
3481 /* This function is called for routers, transports, and authentication
3482 mechanisms. It reads the data from the current point in the configuration file
3483 up to the end of the section, and sets up a chain of instance blocks according
3484 to the file's contents. The file will already have been opened by a call to
3485 readconf_main, and must be left open for subsequent reading of further data.
3487 Any errors cause a panic crash. Note that the blocks with names driver_info and
3488 driver_instance must map the first portions of all the _info and _instance
3489 blocks for this shared code to work.
3492 class "router", "transport", or "authenticator"
3493 anchor &routers, &transports, &auths
3494 drivers_available available drivers
3495 size_of_info size of each info block
3496 instance_default points to default data for an instance
3497 instance_size size of instance block
3498 driver_optionlist generic option list
3499 driver_optionlist_count count of generic option list
3505 readconf_driver_init(
3507 driver_instance **anchor,
3508 driver_info *drivers_available,
3510 void *instance_default,
3512 optionlist *driver_optionlist,
3513 int driver_optionlist_count)
3515 driver_instance **p = anchor;
3516 driver_instance *d = NULL;
3519 while ((buffer = get_config_line()) != NULL)
3524 /* Read the first name on the line and test for the start of a new driver. A
3525 macro definition indicates the end of the previous driver. If this isn't the
3526 start of a new driver, the line will be re-read. */
3528 s = readconf_readname(name, sizeof(name), buffer);
3530 /* Handle macro definition, first finishing off the initialization of the
3531 previous driver, if any. */
3533 if (isupper(*name) && *s == '=')
3537 if (d->driver_name == NULL)
3538 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
3539 "no driver defined for %s \"%s\"", class, d->name);
3543 read_macro_assignment(buffer);
3547 /* If the line starts with a name terminated by a colon, we are at the
3548 start of the definition of a new driver. The rest of the line must be
3555 /* Finish off initializing the previous driver. */
3559 if (d->driver_name == NULL)
3560 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
3561 "no driver defined for %s \"%s\"", class, d->name);
3565 /* Check that we haven't already got a driver of this name */
3567 for (d = *anchor; d != NULL; d = d->next)
3568 if (Ustrcmp(name, d->name) == 0)
3569 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
3570 "there are two %ss called \"%s\"", class, name);
3572 /* Set up a new driver instance data block on the chain, with
3573 its default values installed. */
3575 d = store_get(instance_size);
3576 memcpy(d, instance_default, instance_size);
3579 d->name = string_copy(name);
3581 /* Clear out the "set" bits in the generic options */
3583 for (i = 0; i < driver_optionlist_count; i++)
3584 driver_optionlist[i].type &= ~opt_set;
3586 /* Check nothing more on this line, then do the next loop iteration. */
3588 while (isspace(*s)) s++;
3589 if (*s != 0) extra_chars_error(s, US"driver name ", name, US"");
3593 /* Not the start of a new driver. Give an error if we have not set up a
3594 current driver yet. */
3596 if (d == NULL) log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
3597 "%s name missing", class);
3599 /* First look to see if this is a generic option; if it is "driver",
3600 initialize the driver. If is it not a generic option, we can look for a
3601 private option provided that the driver has been previously set up. */
3603 if (readconf_handle_option(buffer, driver_optionlist,
3604 driver_optionlist_count, d, NULL))
3606 if (d->info == NULL && d->driver_name != NULL)
3607 init_driver(d, drivers_available, size_of_info, class);
3610 /* Handle private options - pass the generic block because some may
3611 live therein. A flag with each option indicates if it is in the public
3614 else if (d->info != NULL)
3616 readconf_handle_option(buffer, d->info->options,
3617 *(d->info->options_count), d, US"option \"%s\" unknown");
3620 /* The option is not generic and the driver name has not yet been given. */
3622 else log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "option \"%s\" unknown "
3623 "(\"driver\" must be specified before any private options)", name);
3626 /* Run the initialization function for the final driver. */
3630 if (d->driver_name == NULL)
3631 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
3632 "no driver defined for %s \"%s\"", class, d->name);
3639 /*************************************************
3640 * Check driver dependency *
3641 *************************************************/
3643 /* This function is passed a driver instance and a string. It checks whether
3644 any of the string options for the driver contains the given string as an
3648 d points to a driver instance block
3649 s the string to search for
3651 Returns: TRUE if a dependency is found
3655 readconf_depends(driver_instance *d, uschar *s)
3657 int count = *(d->info->options_count);
3661 for (ol = d->info->options; ol < d->info->options + count; ol++)
3663 void *options_block;
3665 int type = ol->type & opt_mask;
3666 if (type != opt_stringptr) continue;
3667 options_block = ((ol->type & opt_public) == 0)? d->options_block : (void *)d;
3668 value = *(uschar **)((uschar *)options_block + (long int)(ol->value));
3669 if (value != NULL && (ss = Ustrstr(value, s)) != NULL)
3671 if (ss <= value || (ss[-1] != '$' && ss[-1] != '{') ||
3672 isalnum(ss[Ustrlen(s)])) continue;
3673 DEBUG(D_transport) debug_printf("driver %s: \"%s\" option depends on %s\n",
3674 d->name, ol->name, s);
3679 DEBUG(D_transport) debug_printf("driver %s does not depend on %s\n", d->name, s);
3686 /*************************************************
3687 * Decode an error type for retries *
3688 *************************************************/
3690 /* This function is global because it is also called from the main
3691 program when testing retry information. It decodes strings such as "quota_7d"
3692 into numerical error codes.
3695 pp points to start of text
3696 p points past end of text
3697 basic_errno points to an int to receive the main error number
3698 more_errno points to an int to receive the secondary error data
3700 Returns: NULL if decoded correctly; else points to error text
3704 readconf_retry_error(const uschar *pp, const uschar *p,
3705 int *basic_errno, int *more_errno)
3708 const uschar *q = pp;
3709 while (q < p && *q != '_') q++;
3712 if (len == 5 && strncmpic(pp, US"quota", len) == 0)
3714 *basic_errno = ERRNO_EXIMQUOTA;
3715 if (q != p && (*more_errno = readconf_readtime(q+1, *p, FALSE)) < 0)
3716 return US"bad time value";
3719 else if (len == 7 && strncmpic(pp, US"refused", len) == 0)
3721 *basic_errno = ECONNREFUSED;
3724 if (strncmpic(q+1, US"MX", p-q-1) == 0) *more_errno = 'M';
3725 else if (strncmpic(q+1, US"A", p-q-1) == 0) *more_errno = 'A';
3726 else return US"A or MX expected after \"refused\"";
3730 else if (len == 7 && strncmpic(pp, US"timeout", len) == 0)
3732 *basic_errno = ETIMEDOUT;
3736 int xlen = p - q - 1;
3737 const uschar *x = q + 1;
3739 static uschar *extras[] =
3740 { US"A", US"MX", US"connect", US"connect_A", US"connect_MX" };
3741 static int values[] =
3742 { 'A', 'M', RTEF_CTOUT, RTEF_CTOUT|'A', RTEF_CTOUT|'M' };
3744 for (i = 0; i < sizeof(extras)/sizeof(uschar *); i++)
3745 if (strncmpic(x, extras[i], xlen) == 0)
3747 *more_errno = values[i];
3751 if (i >= sizeof(extras)/sizeof(uschar *))
3752 if (strncmpic(x, US"DNS", xlen) == 0)
3753 log_write(0, LOG_MAIN|LOG_PANIC, "\"timeout_dns\" is no longer "
3754 "available in retry rules (it has never worked) - treated as "
3757 return US"\"A\", \"MX\", or \"connect\" expected after \"timeout\"";
3761 else if (strncmpic(pp, US"mail_4", 6) == 0 ||
3762 strncmpic(pp, US"rcpt_4", 6) == 0 ||
3763 strncmpic(pp, US"data_4", 6) == 0)
3766 int x = 255; /* means "any 4xx code" */
3767 if (p != pp + 8) bad = TRUE; else
3769 int a = pp[6], b = pp[7];
3773 if (isdigit(b)) x += b - '0';
3774 else if (b == 'x') x += 100;
3777 else if (a != 'x' || b != 'x') bad = TRUE;
3781 return string_sprintf("%.4s_4 must be followed by xx, dx, or dd, where "
3782 "x is literal and d is any digit", pp);
3784 *basic_errno = *pp == 'm' ? ERRNO_MAIL4XX :
3785 *pp == 'r' ? ERRNO_RCPT4XX : ERRNO_DATA4XX;
3786 *more_errno = x << 8;
3789 else if (len == 4 && strncmpic(pp, US"auth", len) == 0 &&
3790 strncmpic(q+1, US"failed", p-q-1) == 0)
3791 *basic_errno = ERRNO_AUTHFAIL;
3793 else if (strncmpic(pp, US"lost_connection", p - pp) == 0)
3794 *basic_errno = ERRNO_SMTPCLOSED;
3796 else if (strncmpic(pp, US"tls_required", p - pp) == 0)
3797 *basic_errno = ERRNO_TLSREQUIRED;
3799 else if (strncmpic(pp, US"lookup", p - pp) == 0)
3800 *basic_errno = ERRNO_UNKNOWNHOST;
3802 else if (len != 1 || Ustrncmp(pp, "*", 1) != 0)
3803 return string_sprintf("unknown or malformed retry error \"%.*s\"", (int) (p-pp), pp);
3811 /*************************************************
3812 * Read retry information *
3813 *************************************************/
3815 /* Each line of retry information contains:
3817 . A domain name pattern or an address pattern;
3819 . An error name, possibly with additional data, or *;
3821 . An optional sequence of retry items, each consisting of an identifying
3822 letter, a cutoff time, and optional parameters.
3824 All this is decoded and placed into a control block. */
3827 /* Subroutine to read an argument, preceded by a comma and terminated
3828 by comma, semicolon, whitespace, or newline. The types are: 0 = time value,
3829 1 = fixed point number (returned *1000).
3832 paddr pointer to pointer to current character; updated
3833 type 0 => read a time; 1 => read a fixed point number
3835 Returns: time in seconds or fixed point number * 1000
3839 retry_arg(const uschar **paddr, int type)
3841 const uschar *p = *paddr;
3844 if (*p++ != ',') log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "comma expected");
3846 while (isspace(*p)) p++;
3848 while (isalnum(*p) || (type == 1 && *p == '.')) p++;
3850 if (*p != 0 && !isspace(*p) && *p != ',' && *p != ';')
3851 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "comma or semicolon expected");
3856 case 0: return readconf_readtime(pp, *p, FALSE);
3857 case 1: return readconf_readfixed(pp, *p);
3859 return 0; /* Keep picky compilers happy */
3862 /* The function proper */
3865 readconf_retries(void)
3867 retry_config **chain = &retries;
3871 while ((p = get_config_line()))
3873 retry_rule **rchain;
3877 next = store_get(sizeof(retry_config));
3880 chain = &(next->next);
3881 next->basic_errno = next->more_errno = 0;
3882 next->senders = NULL;
3884 rchain = &(next->rules);
3886 next->pattern = string_dequote(&p);
3887 while (isspace(*p)) p++;
3889 while (mac_isgraph(*p)) p++;
3890 if (p - pp <= 0) log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
3891 "missing error type in retry rule");
3893 /* Test error names for things we understand. */
3895 if ((error = readconf_retry_error(pp, p, &next->basic_errno,
3896 &next->more_errno)))
3897 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "%s", error);
3899 /* There may be an optional address list of senders to be used as another
3900 constraint on the rule. This was added later, so the syntax is a bit of a
3901 fudge. Anything that is not a retry rule starting "F," or "G," is treated as
3904 while (isspace(*p)) p++;
3905 if (Ustrncmp(p, "senders", 7) == 0)
3908 while (isspace(*p)) p++;
3909 if (*p++ != '=') log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
3910 "\"=\" expected after \"senders\" in retry rule");
3911 while (isspace(*p)) p++;
3912 next->senders = string_dequote(&p);
3915 /* Now the retry rules. Keep the maximum timeout encountered. */
3917 while (isspace(*p)) p++;
3921 retry_rule *rule = store_get(sizeof(retry_rule));
3923 rchain = &(rule->next);
3925 rule->rule = toupper(*p++);
3926 rule->timeout = retry_arg(&p, 0);
3927 if (rule->timeout > retry_maximum_timeout)
3928 retry_maximum_timeout = rule->timeout;
3932 case 'F': /* Fixed interval */
3933 rule->p1 = retry_arg(&p, 0);
3936 case 'G': /* Geometrically increasing intervals */
3937 case 'H': /* Ditto, but with randomness */
3938 rule->p1 = retry_arg(&p, 0);
3939 rule->p2 = retry_arg(&p, 1);
3943 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "unknown retry rule letter");
3947 if (rule->timeout <= 0 || rule->p1 <= 0 ||
3948 (rule->rule != 'F' && rule->p2 < 1000))
3949 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
3950 "bad parameters for retry rule");
3952 while (isspace(*p)) p++;
3956 while (isspace(*p)) p++;
3959 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "semicolon expected");
3966 /*************************************************
3967 * Initialize authenticators *
3968 *************************************************/
3970 /* Read the authenticators section of the configuration file.
3979 auth_instance *au, *bu;
3980 readconf_driver_init(US"authenticator",
3981 (driver_instance **)(&auths), /* chain anchor */
3982 (driver_info *)auths_available, /* available drivers */
3983 sizeof(auth_info), /* size of info block */
3984 &auth_defaults, /* default values for generic options */
3985 sizeof(auth_instance), /* size of instance block */
3986 optionlist_auths, /* generic options */
3987 optionlist_auths_size);
3989 for (au = auths; au != NULL; au = au->next)
3991 if (au->public_name == NULL)
3992 log_write(0, LOG_PANIC_DIE|LOG_CONFIG, "no public name specified for "
3993 "the %s authenticator", au->name);
3994 for (bu = au->next; bu != NULL; bu = bu->next)
3996 if (strcmpic(au->public_name, bu->public_name) == 0)
3998 if ((au->client && bu->client) || (au->server && bu->server))
3999 log_write(0, LOG_PANIC_DIE|LOG_CONFIG, "two %s authenticators "
4000 "(%s and %s) have the same public name (%s)",
4001 (au->client)? US"client" : US"server", au->name, bu->name,
4011 /*************************************************
4012 * Read ACL information *
4013 *************************************************/
4015 /* If this run of Exim is not doing something that involves receiving a
4016 message, we can just skip over the ACL information. No need to parse it.
4018 First, we have a function for acl_read() to call back to get the next line. We
4019 need to remember the line we passed, because at the end it will contain the
4020 name of the next ACL. */
4022 static uschar *acl_line;
4027 acl_line = get_config_line();
4032 /* Now the main function:
4043 /* Read each ACL and add it into the tree. Macro (re)definitions are allowed
4046 acl_line = get_config_line();
4048 while(acl_line != NULL)
4054 p = readconf_readname(name, sizeof(name), acl_line);
4055 if (isupper(*name) && *p == '=')
4057 read_macro_assignment(acl_line);
4058 acl_line = get_config_line();
4062 if (*p != ':' || name[0] == 0)
4063 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "missing or malformed ACL name");
4065 node = store_get(sizeof(tree_node) + Ustrlen(name));
4066 Ustrcpy(node->name, name);
4067 if (!tree_insertnode(&acl_anchor, node))
4068 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
4069 "there are two ACLs called \"%s\"", name);
4071 node->data.ptr = acl_read(acl_callback, &error);
4073 if (node->data.ptr == NULL && error != NULL)
4074 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "error in ACL: %s", error);
4080 /*************************************************
4081 * Read configuration for local_scan() *
4082 *************************************************/
4084 /* This function is called after "begin local_scan" is encountered in the
4085 configuration file. If the local_scan() function allows for configuration
4086 options, we can process them. Otherwise, we expire in a panic.
4093 local_scan_init(void)
4095 #ifndef LOCAL_SCAN_HAS_OPTIONS
4096 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "local_scan() options not supported: "
4097 "(LOCAL_SCAN_HAS_OPTIONS not defined in Local/Makefile)");
4101 while ((p = get_config_line()) != NULL)
4103 (void) readconf_handle_option(p, local_scan_options, local_scan_options_count,
4104 NULL, US"local_scan option \"%s\" unknown");
4111 /*************************************************
4112 * Read rest of configuration (after main) *
4113 *************************************************/
4115 /* This function reads the rest of the runtime configuration, after the main
4116 configuration. It is called only when actually needed. Each subsequent section
4117 of the configuration starts with a line of the form
4121 where the name is "routers", "transports", etc. A section is terminated by
4122 hitting the next "begin" line, and the next name is left in next_section.
4123 Because it may confuse people as to whether the names are singular or plural,
4124 we add "s" if it's missing. There is always enough room in next_section for
4125 this. This function is basically just a switch.
4131 static uschar *section_list[] = {
4145 while(next_section[0] != 0)
4149 int last = sizeof(section_list) / sizeof(uschar *);
4151 int n = Ustrlen(next_section);
4153 if (tolower(next_section[n-1]) != 's') Ustrcpy(next_section+n, "s");
4157 int c = strcmpic(next_section, section_list[mid]);
4159 if (c > 0) first = mid + 1; else last = mid;
4161 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
4162 "\"%.*s\" is not a known configuration section name", n, next_section);
4163 mid = (last + first)/2;
4167 if (((had ^= bit) & bit) == 0)
4168 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
4169 "\"%.*s\" section is repeated in the configuration file", n,
4174 case 0: readconf_acl(); break;
4175 case 1: auths_init(); break;
4176 case 2: local_scan_init(); break;
4177 case 3: readconf_retries(); break;
4178 case 4: readconf_rewrites(); break;
4179 case 5: route_init(); break;
4180 case 6: transport_init(); break;
4184 (void)fclose(config_file);
4189 /* End of readconf.c */