1 /*************************************************
2 * Exim - an Internet mail transport agent *
3 *************************************************/
5 /* Copyright (c) University of Cambridge 1995 - 2014 */
6 /* See the file NOTICE for conditions of use and distribution. */
8 /* Functions for reading the configuration file, and for displaying
9 overall configuration values. Thanks to Brian Candler for the original
10 implementation of the conditional .ifdef etc. */
14 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 { "smtp_accept_keepalive", opt_bool, &smtp_accept_keepalive },
377 { "smtp_accept_max", opt_int, &smtp_accept_max },
378 { "smtp_accept_max_nonmail", opt_int, &smtp_accept_max_nonmail },
379 { "smtp_accept_max_nonmail_hosts", opt_stringptr, &smtp_accept_max_nonmail_hosts },
380 { "smtp_accept_max_per_connection", opt_int, &smtp_accept_max_per_connection },
381 { "smtp_accept_max_per_host", opt_stringptr, &smtp_accept_max_per_host },
382 { "smtp_accept_queue", opt_int, &smtp_accept_queue },
383 { "smtp_accept_queue_per_connection", opt_int, &smtp_accept_queue_per_connection },
384 { "smtp_accept_reserve", opt_int, &smtp_accept_reserve },
385 { "smtp_active_hostname", opt_stringptr, &raw_active_hostname },
386 { "smtp_banner", opt_stringptr, &smtp_banner },
387 { "smtp_check_spool_space", opt_bool, &smtp_check_spool_space },
388 { "smtp_connect_backlog", opt_int, &smtp_connect_backlog },
389 { "smtp_enforce_sync", opt_bool, &smtp_enforce_sync },
390 { "smtp_etrn_command", opt_stringptr, &smtp_etrn_command },
391 { "smtp_etrn_serialize", opt_bool, &smtp_etrn_serialize },
392 { "smtp_load_reserve", opt_fixed, &smtp_load_reserve },
393 { "smtp_max_synprot_errors", opt_int, &smtp_max_synprot_errors },
394 { "smtp_max_unknown_commands",opt_int, &smtp_max_unknown_commands },
395 { "smtp_ratelimit_hosts", opt_stringptr, &smtp_ratelimit_hosts },
396 { "smtp_ratelimit_mail", opt_stringptr, &smtp_ratelimit_mail },
397 { "smtp_ratelimit_rcpt", opt_stringptr, &smtp_ratelimit_rcpt },
398 { "smtp_receive_timeout", opt_func, &fn_smtp_receive_timeout },
399 { "smtp_reserve_hosts", opt_stringptr, &smtp_reserve_hosts },
400 { "smtp_return_error_details",opt_bool, &smtp_return_error_details },
401 #ifdef EXPERIMENTAL_INTERNATIONAL
402 { "smtputf8_advertise_hosts", opt_stringptr, &smtputf8_advertise_hosts },
404 #ifdef WITH_CONTENT_SCAN
405 { "spamd_address", opt_stringptr, &spamd_address },
407 #ifdef EXPERIMENTAL_SPF
408 { "spf_guess", opt_stringptr, &spf_guess },
410 { "split_spool_directory", opt_bool, &split_spool_directory },
411 { "spool_directory", opt_stringptr, &spool_directory },
413 { "sqlite_lock_timeout", opt_int, &sqlite_lock_timeout },
415 #ifdef EXPERIMENTAL_SRS
416 { "srs_config", opt_stringptr, &srs_config },
417 { "srs_hashlength", opt_int, &srs_hashlength },
418 { "srs_hashmin", opt_int, &srs_hashmin },
419 { "srs_maxage", opt_int, &srs_maxage },
420 { "srs_secrets", opt_stringptr, &srs_secrets },
421 { "srs_usehash", opt_bool, &srs_usehash },
422 { "srs_usetimestamp", opt_bool, &srs_usetimestamp },
424 { "strict_acl_vars", opt_bool, &strict_acl_vars },
425 { "strip_excess_angle_brackets", opt_bool, &strip_excess_angle_brackets },
426 { "strip_trailing_dot", opt_bool, &strip_trailing_dot },
427 { "syslog_duplication", opt_bool, &syslog_duplication },
428 { "syslog_facility", opt_stringptr, &syslog_facility_str },
429 { "syslog_processname", opt_stringptr, &syslog_processname },
430 { "syslog_timestamp", opt_bool, &syslog_timestamp },
431 { "system_filter", opt_stringptr, &system_filter },
432 { "system_filter_directory_transport", opt_stringptr,&system_filter_directory_transport },
433 { "system_filter_file_transport",opt_stringptr,&system_filter_file_transport },
434 { "system_filter_group", opt_gid, &system_filter_gid },
435 { "system_filter_pipe_transport",opt_stringptr,&system_filter_pipe_transport },
436 { "system_filter_reply_transport",opt_stringptr,&system_filter_reply_transport },
437 { "system_filter_user", opt_uid, &system_filter_uid },
438 { "tcp_nodelay", opt_bool, &tcp_nodelay },
439 #ifdef USE_TCP_WRAPPERS
440 { "tcp_wrappers_daemon_name", opt_stringptr, &tcp_wrappers_daemon_name },
442 { "timeout_frozen_after", opt_time, &timeout_frozen_after },
443 { "timezone", opt_stringptr, &timezone_string },
445 { "tls_advertise_hosts", opt_stringptr, &tls_advertise_hosts },
446 { "tls_certificate", opt_stringptr, &tls_certificate },
447 { "tls_crl", opt_stringptr, &tls_crl },
448 { "tls_dh_max_bits", opt_int, &tls_dh_max_bits },
449 { "tls_dhparam", opt_stringptr, &tls_dhparam },
450 # ifndef DISABLE_OCSP
451 { "tls_ocsp_file", opt_stringptr, &tls_ocsp_file },
453 { "tls_on_connect_ports", opt_stringptr, &tls_in.on_connect_ports },
454 { "tls_privatekey", opt_stringptr, &tls_privatekey },
455 { "tls_remember_esmtp", opt_bool, &tls_remember_esmtp },
456 { "tls_require_ciphers", opt_stringptr, &tls_require_ciphers },
457 { "tls_try_verify_hosts", opt_stringptr, &tls_try_verify_hosts },
458 { "tls_verify_certificates", opt_stringptr, &tls_verify_certificates },
459 { "tls_verify_hosts", opt_stringptr, &tls_verify_hosts },
461 { "trusted_groups", opt_gidlist, &trusted_groups },
462 { "trusted_users", opt_uidlist, &trusted_users },
463 { "unknown_login", opt_stringptr, &unknown_login },
464 { "unknown_username", opt_stringptr, &unknown_username },
465 { "untrusted_set_sender", opt_stringptr, &untrusted_set_sender },
466 { "uucp_from_pattern", opt_stringptr, &uucp_from_pattern },
467 { "uucp_from_sender", opt_stringptr, &uucp_from_sender },
468 { "warn_message_file", opt_stringptr, &warn_message_file },
469 { "write_rejectlog", opt_bool, &write_rejectlog }
472 static int optionlist_config_size =
473 sizeof(optionlist_config)/sizeof(optionlist);
477 /*************************************************
478 * Find the name of an option *
479 *************************************************/
481 /* This function is to aid debugging. Various functions take arguments that are
482 pointer variables in the options table or in option tables for various drivers.
483 For debugging output, it is useful to be able to find the name of the option
484 which is currently being processed. This function finds it, if it exists, by
485 searching the table(s).
487 Arguments: a value that is presumed to be in the table above
488 Returns: the option name, or an empty string
492 readconf_find_option(void *p)
496 transport_instance *t;
498 for (i = 0; i < optionlist_config_size; i++)
499 if (p == optionlist_config[i].value) return US optionlist_config[i].name;
501 for (r = routers; r != NULL; r = r->next)
503 router_info *ri = r->info;
504 for (i = 0; i < *ri->options_count; i++)
506 if ((ri->options[i].type & opt_mask) != opt_stringptr) continue;
507 if (p == (char *)(r->options_block) + (long int)(ri->options[i].value))
508 return US ri->options[i].name;
512 for (t = transports; t != NULL; t = t->next)
514 transport_info *ti = t->info;
515 for (i = 0; i < *ti->options_count; i++)
517 optionlist * op = &ti->options[i];
518 if ((op->type & opt_mask) != opt_stringptr) continue;
519 if (p == ( op->type & opt_public
521 : (char *)t->options_block
523 + (long int)op->value)
534 /*************************************************
535 * Deal with an assignment to a macro *
536 *************************************************/
538 /* This function is called when a line that starts with an upper case letter is
539 encountered. The argument "line" should contain a complete logical line, and
540 start with the first letter of the macro name. The macro name and the
541 replacement text are extracted and stored. Redefinition of existing,
542 non-command line, macros is permitted using '==' instead of '='.
545 s points to the start of the logical line
551 read_macro_assignment(uschar *s)
557 macro_item *mlast = NULL;
559 while (isalnum(*s) || *s == '_')
561 if (namelen >= sizeof(name) - 1)
562 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
563 "macro name too long (maximum is " SIZE_T_FMT " characters)", sizeof(name) - 1);
564 name[namelen++] = *s++;
568 while (isspace(*s)) s++;
570 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "malformed macro definition");
577 while (isspace(*s)) s++;
579 /* If an existing macro of the same name was defined on the command line, we
580 just skip this definition. It's an error to attempt to redefine a macro without
581 redef set to TRUE, or to redefine a macro when it hasn't been defined earlier.
582 It is also an error to define a macro whose name begins with the name of a
583 previously defined macro. Note: it is documented that the other way round
586 for (m = macros; m != NULL; m = m->next)
588 int len = Ustrlen(m->name);
590 if (Ustrcmp(m->name, name) == 0)
592 if (!m->command_line && !redef)
593 log_write(0, LOG_CONFIG|LOG_PANIC_DIE, "macro \"%s\" is already "
594 "defined (use \"==\" if you want to redefine it", name);
598 if (len < namelen && Ustrstr(name, m->name) != NULL)
599 log_write(0, LOG_CONFIG|LOG_PANIC_DIE, "\"%s\" cannot be defined as "
600 "a macro because previously defined macro \"%s\" is a substring",
603 /* We cannot have this test, because it is documented that a substring
604 macro is permitted (there is even an example).
606 * if (len > namelen && Ustrstr(m->name, name) != NULL)
607 * log_write(0, LOG_CONFIG|LOG_PANIC_DIE, "\"%s\" cannot be defined as "
608 * "a macro because it is a substring of previously defined macro \"%s\"",
615 /* Check for an overriding command-line definition. */
617 if (m != NULL && m->command_line) return;
619 /* Redefinition must refer to an existing macro. */
624 log_write(0, LOG_CONFIG|LOG_PANIC_DIE, "can't redefine an undefined macro "
628 /* We have a new definition. The macro_item structure includes a final vector
629 called "name" which is one byte long. Thus, adding "namelen" gives us enough
630 room to store the "name" string. */
634 m = store_get(sizeof(macro_item) + namelen);
635 if (macros == NULL) macros = m; else mlast->next = m;
636 Ustrncpy(m->name, name, namelen);
637 m->name[namelen] = 0;
639 m->command_line = FALSE;
642 /* Set the value of the new or redefined macro */
644 m->replacement = string_copy(s);
651 /*************************************************
652 * Read configuration line *
653 *************************************************/
655 /* A logical line of text is read from the configuration file into the big
656 buffer, taking account of macros, .includes, and continuations. The size of
657 big_buffer is increased if necessary. The count of configuration lines is
658 maintained. Physical input lines starting with # (ignoring leading white space,
659 and after macro replacement) and empty logical lines are always ignored.
660 Leading and trailing spaces are removed.
662 If we hit a line of the form "begin xxxx", the xxxx is placed in the
663 next_section vector, and the function returns NULL, indicating the end of a
664 configuration section. On end-of-file, NULL is returned with next_section
669 Returns: a pointer to the first non-blank in the line,
670 or NULL if eof or end of section is reached
674 get_config_line(void)
676 int startoffset = 0; /* To first non-blank char in logical line */
677 int len = 0; /* Of logical line so far */
683 /* Loop for handling continuation lines, skipping comments, and dealing with
688 if (Ufgets(big_buffer+len, big_buffer_size-len, config_file) == NULL)
690 if (config_file_stack != NULL) /* EOF inside .include */
692 (void)fclose(config_file);
693 config_file = config_file_stack->file;
694 config_filename = config_file_stack->filename;
695 config_lineno = config_file_stack->lineno;
696 config_file_stack = config_file_stack->next;
700 /* EOF at top level */
702 if (cstate_stack_ptr >= 0)
703 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
704 "Unexpected end of configuration file: .endif missing");
706 if (len != 0) break; /* EOF after continuation */
707 next_section[0] = 0; /* EOF at start of logical line */
712 newlen = len + Ustrlen(big_buffer + len);
714 /* Handle pathologically long physical lines - yes, it did happen - by
715 extending big_buffer at this point. The code also copes with very long
718 while (newlen == big_buffer_size - 1 && big_buffer[newlen - 1] != '\n')
721 big_buffer_size += BIG_BUFFER_SIZE;
722 newbuffer = store_malloc(big_buffer_size);
724 /* This use of strcpy is OK because we know that the string in the old
725 buffer is shorter than the new buffer. */
727 Ustrcpy(newbuffer, big_buffer);
728 store_free(big_buffer);
729 big_buffer = newbuffer;
730 if (Ufgets(big_buffer+newlen, big_buffer_size-newlen, config_file) == NULL)
732 newlen += Ustrlen(big_buffer + newlen);
735 /* Find the true start of the physical line - leading spaces are always
738 ss = big_buffer + len;
739 while (isspace(*ss)) ss++;
741 /* Process the physical line for macros. If this is the start of the logical
742 line, skip over initial text at the start of the line if it starts with an
743 upper case character followed by a sequence of name characters and an equals
744 sign, because that is the definition of a new macro, and we don't do
745 replacement therein. */
748 if (len == 0 && isupper(*s))
750 while (isalnum(*s) || *s == '_') s++;
751 while (isspace(*s)) s++;
752 if (*s != '=') s = ss; /* Not a macro definition */
755 /* For each defined macro, scan the line (from after XXX= if present),
756 replacing all occurrences of the macro. */
759 for (m = macros; m != NULL; m = m->next)
764 while ((p = Ustrstr(t, m->name)) != NULL)
767 int namelen = Ustrlen(m->name);
768 int replen = Ustrlen(m->replacement);
770 /* Expand the buffer if necessary */
772 while (newlen - namelen + replen + 1 > big_buffer_size)
774 int newsize = big_buffer_size + BIG_BUFFER_SIZE;
775 uschar *newbuffer = store_malloc(newsize);
776 memcpy(newbuffer, big_buffer, newlen + 1);
777 p = newbuffer + (p - big_buffer);
778 s = newbuffer + (s - big_buffer);
779 ss = newbuffer + (ss - big_buffer);
780 t = newbuffer + (t - big_buffer);
781 big_buffer_size = newsize;
782 store_free(big_buffer);
783 big_buffer = newbuffer;
786 /* Shuffle the remaining characters up or down in the buffer before
787 copying in the replacement text. Don't rescan the replacement for this
791 moveby = replen - namelen;
794 memmove(p + replen, pp, (big_buffer + newlen) - pp + 1);
797 Ustrncpy(p, m->replacement, replen);
803 /* An empty macro replacement at the start of a line could mean that ss no
804 longer points to the first non-blank character. */
806 while (isspace(*ss)) ss++;
808 /* Check for comment lines - these are physical lines. */
810 if (*ss == '#') continue;
812 /* Handle conditionals, which are also applied to physical lines. Conditions
813 are of the form ".ifdef ANYTEXT" and are treated as true if any macro
814 expansion occured on the rest of the line. A preliminary test for the leading
815 '.' saves effort on most lines. */
821 /* Search the list of conditional directives */
823 for (i = 0; i < cond_list_size; i++)
826 cond_item *c = cond_list+i;
827 if (Ustrncmp(ss+1, c->name, c->namelen) != 0) continue;
829 /* The following character must be white space or end of string */
831 n = ss[1 + c->namelen];
832 if (n != ' ' && n != 't' && n != '\n' && n != 0) break;
834 /* .ifdef and .ifndef push the current state onto the stack, then set
835 a new one from the table. Stack overflow is an error */
839 if (cstate_stack_ptr >= CSTATE_STACK_SIZE - 1)
840 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
841 ".%s nested too deeply", c->name);
842 cstate_stack[++cstate_stack_ptr] = cstate;
843 cstate = next_cstate[cstate][macro_found? c->action1 : c->action2];
846 /* For any of the others, stack underflow is an error. The next state
847 comes either from the stack (.endif) or from the table. */
851 if (cstate_stack_ptr < 0)
852 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
853 ".%s without matching .ifdef", c->name);
854 cstate = (c->pushpop < 0)? cstate_stack[cstate_stack_ptr--] :
855 next_cstate[cstate][macro_found? c->action1 : c->action2];
858 /* Having dealt with a directive, break the loop */
863 /* If we have handled a conditional directive, continue with the next
864 physical line. Otherwise, fall through. */
866 if (i < cond_list_size) continue;
869 /* If the conditional state is not 0 (actively using these lines), ignore
872 if (cstate != 0) continue; /* Conditional skip */
874 /* Handle .include lines - these are also physical lines. */
876 if (Ustrncmp(ss, ".include", 8) == 0 &&
878 (Ustrncmp(ss+8, "_if_exists", 10) == 0 && isspace(ss[18]))))
881 int include_if_exists = isspace(ss[8])? 0 : 10;
882 config_file_item *save;
885 ss += 9 + include_if_exists;
886 while (isspace(*ss)) ss++;
887 t = ss + Ustrlen(ss);
888 while (t > ss && isspace(t[-1])) t--;
889 if (*ss == '\"' && t[-1] == '\"')
897 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, ".include specifies a non-"
898 "absolute path \"%s\"", ss);
900 if (include_if_exists != 0 && (Ustat(ss, &statbuf) != 0)) continue;
902 save = store_get(sizeof(config_file_item));
903 save->next = config_file_stack;
904 config_file_stack = save;
905 save->file = config_file;
906 save->filename = config_filename;
907 save->lineno = config_lineno;
909 config_file = Ufopen(ss, "rb");
910 if (config_file == NULL)
911 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "failed to open included "
912 "configuration file %s", ss);
913 config_filename = string_copy(ss);
918 /* If this is the start of the logical line, remember where the non-blank
919 data starts. Otherwise shuffle down continuation lines to remove leading
923 startoffset = ss - big_buffer;
926 s = big_buffer + len;
929 memmove(s, ss, (newlen - len) - (ss - s) + 1);
934 /* Accept the new addition to the line. Remove trailing white space. */
937 while (len > 0 && isspace(big_buffer[len-1])) len--;
940 /* We are done if the line does not end in backslash and contains some data.
941 Empty logical lines are ignored. For continuations, remove the backslash and
942 go round the loop to read the continuation line. */
946 if (big_buffer[len-1] != '\\') break; /* End of logical line */
947 big_buffer[--len] = 0; /* Remove backslash */
949 } /* Loop for reading multiple physical lines */
951 /* We now have a logical line. Test for the end of a configuration section (or,
952 more accurately, for the start of the next section). Place the name of the next
953 section in next_section, and return NULL. If the name given is longer than
954 next_section, truncate it. It will be unrecognized later, because all the known
955 section names do fit. Leave space for pluralizing. */
957 s = big_buffer + startoffset; /* First non-space character */
958 if (strncmpic(s, US"begin ", 6) == 0)
961 while (isspace(*s)) s++;
962 if (big_buffer + len - s > sizeof(next_section) - 2)
963 s[sizeof(next_section) - 2] = 0;
964 Ustrcpy(next_section, s);
968 /* Return the first non-blank character. */
975 /*************************************************
977 *************************************************/
979 /* The yield is the pointer to the next uschar. Names longer than the
980 output space are silently truncated. This function is also used from acl.c when
984 name where to put the name
988 Returns: new input pointer
992 readconf_readname(uschar *name, int len, uschar *s)
995 while (isspace(*s)) s++;
998 while (isalnum(*s) || *s == '_')
1000 if (p < len-1) name[p++] = *s;
1005 while (isspace(*s)) s++;
1012 /*************************************************
1013 * Read a time value *
1014 *************************************************/
1016 /* This function is also called from outside, to read argument
1017 time values. The format of a time value is:
1019 [<n>w][<n>d][<n>h][<n>m][<n>s]
1021 as long as at least one is present. If a format error is encountered,
1022 return a negative value. The value must be terminated by the given
1027 terminator required terminating character
1028 return_msec if TRUE, allow fractional seconds and return milliseconds
1030 Returns: the time value, or -1 on syntax error
1031 value is seconds if return_msec is FALSE
1032 value is milliseconds if return_msec is TRUE
1036 readconf_readtime(const uschar *s, int terminator, BOOL return_msec)
1044 if (!isdigit(*s)) return -1;
1045 (void)sscanf(CCS s, "%d%n", &value, &count);
1050 case 'w': value *= 7;
1051 case 'd': value *= 24;
1052 case 'h': value *= 60;
1053 case 'm': value *= 60;
1058 if (!return_msec) return -1;
1059 (void)sscanf(CCS s, "%lf%n", &fraction, &count);
1061 if (*s++ != 's') return -1;
1062 yield += (int)(fraction * 1000.0);
1068 if (return_msec) value *= 1000;
1070 if (*s == terminator) return yield;
1072 /* Control never reaches here. */
1077 /*************************************************
1078 * Read a fixed point value *
1079 *************************************************/
1081 /* The value is returned *1000
1085 terminator required terminator
1087 Returns: the value, or -1 on error
1091 readconf_readfixed(const uschar *s, int terminator)
1095 if (!isdigit(*s)) return -1;
1096 (void)sscanf(CS s, "%d%n", &value, &count);
1098 yield = value * 1000;
1102 while (isdigit((*(++s))))
1104 yield += (*s - '0') * m;
1109 return (*s == terminator)? yield : (-1);
1114 /*************************************************
1115 * Find option in list *
1116 *************************************************/
1118 /* The lists are always in order, so binary chop can be used.
1121 name the option name to search for
1122 ol the first entry in the option list
1123 last one more than the offset of the last entry in the option list
1125 Returns: pointer to an option entry, or NULL if not found
1129 find_option(uschar *name, optionlist *ol, int last)
1132 while (last > first)
1134 int middle = (first + last)/2;
1135 int c = Ustrcmp(name, ol[middle].name);
1136 if (c == 0) return ol + middle;
1137 else if (c > 0) first = middle + 1;
1145 /*************************************************
1146 * Find a set flag in option list *
1147 *************************************************/
1149 /* Because some versions of Unix make no restrictions on the values of uids and
1150 gids (even negative ones), we cannot represent "unset" by a special value.
1151 There is therefore a separate boolean variable for each one indicating whether
1152 a value is set or not. This function returns a pointer to the boolean, given
1153 the original option name. It is a major disaster if the flag cannot be found.
1156 name the name of the uid or gid option
1157 oltop points to the start of the relevant option list
1158 last one more than the offset of the last item in the option list
1159 data_block NULL when reading main options => data values in the option
1160 list are absolute addresses; otherwise they are byte offsets
1161 in data_block (used for driver options)
1163 Returns: a pointer to the boolean flag.
1167 get_set_flag(uschar *name, optionlist *oltop, int last, void *data_block)
1171 sprintf(CS name2, "*set_%.50s", name);
1172 ol = find_option(name2, oltop, last);
1173 if (ol == NULL) log_write(0, LOG_MAIN|LOG_PANIC_DIE,
1174 "Exim internal error: missing set flag for %s", name);
1175 return (data_block == NULL)? (BOOL *)(ol->value) :
1176 (BOOL *)((uschar *)data_block + (long int)(ol->value));
1182 /*************************************************
1183 * Output extra characters message and die *
1184 *************************************************/
1186 /* Called when an option line has junk on the end. Sometimes this is because
1187 the sysadmin thinks comments are permitted.
1190 s points to the extra characters
1191 t1..t3 strings to insert in the log message
1193 Returns: doesn't return; dies
1197 extra_chars_error(const uschar *s, const uschar *t1, const uschar *t2, const uschar *t3)
1199 uschar *comment = US"";
1200 if (*s == '#') comment = US" (# is comment only at line start)";
1201 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1202 "extra characters follow %s%s%s%s", t1, t2, t3, comment);
1207 /*************************************************
1208 * Read rewrite information *
1209 *************************************************/
1211 /* Each line of rewrite information contains:
1213 . A complete address in the form user@domain, possibly with
1214 leading * for each part; or alternatively, a regex.
1216 . A replacement string (which will be expanded).
1218 . An optional sequence of one-letter flags, indicating which
1219 headers etc. to apply this rule to.
1221 All this is decoded and placed into a control block. The OR of the flags is
1222 maintained in a common word.
1225 p points to the string that makes up the rule
1226 existflags points to the overall flag word
1227 isglobal TRUE if reading global rewrite rules
1229 Returns: the control block for the parsed rule.
1232 static rewrite_rule *
1233 readconf_one_rewrite(const uschar *p, int *existflags, BOOL isglobal)
1235 rewrite_rule *next = store_get(sizeof(rewrite_rule));
1238 next->key = string_dequote(&p);
1240 while (isspace(*p)) p++;
1242 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1243 "missing rewrite replacement string");
1246 next->replacement = string_dequote(&p);
1248 while (*p != 0) switch (*p++)
1250 case ' ': case '\t': break;
1252 case 'q': next->flags |= rewrite_quit; break;
1253 case 'w': next->flags |= rewrite_whole; break;
1255 case 'h': next->flags |= rewrite_all_headers; break;
1256 case 's': next->flags |= rewrite_sender; break;
1257 case 'f': next->flags |= rewrite_from; break;
1258 case 't': next->flags |= rewrite_to; break;
1259 case 'c': next->flags |= rewrite_cc; break;
1260 case 'b': next->flags |= rewrite_bcc; break;
1261 case 'r': next->flags |= rewrite_replyto; break;
1263 case 'E': next->flags |= rewrite_all_envelope; break;
1264 case 'F': next->flags |= rewrite_envfrom; break;
1265 case 'T': next->flags |= rewrite_envto; break;
1267 case 'Q': next->flags |= rewrite_qualify; break;
1268 case 'R': next->flags |= rewrite_repeat; break;
1271 next->flags |= rewrite_smtp;
1272 if (next->key[0] != '^' && Ustrncmp(next->key, "\\N^", 3) != 0)
1273 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1274 "rewrite rule has the S flag but is not a regular expression");
1278 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1279 "unknown rewrite flag character '%c' "
1280 "(could be missing quotes round replacement item)", p[-1]);
1284 /* If no action flags are set, set all the "normal" rewrites. */
1286 if ((next->flags & (rewrite_all | rewrite_smtp)) == 0)
1287 next->flags |= isglobal? rewrite_all : rewrite_all_headers;
1289 /* Remember which exist, for optimization, and return the rule */
1291 *existflags |= next->flags;
1298 /*************************************************
1299 * Read global rewrite information *
1300 *************************************************/
1302 /* Each line is a single rewrite rule; it is parsed into a control block
1303 by readconf_one_rewrite(), and its flags are ORed into the global flag
1304 word rewrite_existflags. */
1307 readconf_rewrites(void)
1309 rewrite_rule **chain = &global_rewrite_rules;
1312 while ((p = get_config_line()) != NULL)
1314 rewrite_rule *next = readconf_one_rewrite(p, &rewrite_existflags, TRUE);
1316 chain = &(next->next);
1322 /*************************************************
1324 *************************************************/
1326 /* Strings are read into the normal store pool. As long we aren't too
1327 near the end of the current block, the string will just use what is necessary
1328 on the top of the stacking pool, because string_cat() uses the extension
1332 s the rest of the input line
1333 name the option name (for errors)
1335 Returns: pointer to the string
1339 read_string(const uschar *s, const uschar *name)
1344 if (*s != '\"') return string_copy(s);
1347 yield = string_dequote(&s);
1349 if (s == ss+1 || s[-1] != '\"')
1350 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1351 "missing quote at end of string value for %s", name);
1353 if (*s != 0) extra_chars_error(s, US"string value for ", name, US"");
1359 /*************************************************
1360 * Custom-handler options *
1361 *************************************************/
1363 fn_smtp_receive_timeout(const uschar * name, const uschar * str)
1366 smtp_receive_timeout_s = string_copy(str);
1369 /* "smtp_receive_timeout", opt_time, &smtp_receive_timeout */
1370 smtp_receive_timeout = readconf_readtime(str, 0, FALSE);
1371 if (smtp_receive_timeout < 0)
1372 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "invalid time value for %s",
1377 /*************************************************
1378 * Handle option line *
1379 *************************************************/
1381 /* This function is called from several places to process a line containing the
1382 setting of an option. The first argument is the line to be decoded; it has been
1383 checked not to be empty and not to start with '#'. Trailing newlines and white
1384 space have been removed. The second argument is a pointer to the list of
1385 variable names that are to be recognized, together with their types and
1386 locations, and the third argument gives the number of entries in the list.
1388 The fourth argument is a pointer to a data block. If it is NULL, then the data
1389 values in the options list are absolute addresses. Otherwise, they are byte
1390 offsets in the data block.
1392 String option data may continue onto several lines; this function reads further
1393 data from config_file if necessary.
1395 The yield of this function is normally zero. If a string continues onto
1396 multiple lines, then the data value is permitted to be followed by a comma
1397 or a semicolon (for use in drivers) and the yield is that character.
1400 buffer contains the configuration line to be handled
1401 oltop points to the start of the relevant option list
1402 last one more than the offset of the last item in the option list
1403 data_block NULL when reading main options => data values in the option
1404 list are absolute addresses; otherwise they are byte offsets
1405 in data_block when they have opt_public set; otherwise
1406 they are byte offsets in data_block->options_block.
1407 unknown_txt format string to use in panic message for unknown option;
1408 must contain %s for option name
1409 if given as NULL, don't panic on unknown option
1411 Returns: TRUE if an option was read successfully,
1412 FALSE false for an unknown option if unknown_txt == NULL,
1413 otherwise panic and die on an unknown option
1417 readconf_handle_option(uschar *buffer, optionlist *oltop, int last,
1418 void *data_block, uschar *unknown_txt)
1422 int n, count, type, value;
1426 BOOL boolvalue = TRUE;
1427 BOOL freesptr = TRUE;
1428 optionlist *ol, *ol2;
1432 uschar *inttype = US"";
1435 uschar *saved_condition, *strtemp;
1436 uschar **str_target;
1440 /* There may be leading spaces; thereafter, we expect an option name starting
1443 while (isspace(*s)) s++;
1445 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "option setting expected: %s", s);
1447 /* Read the name of the option, and skip any subsequent white space. If
1448 it turns out that what we read was "hide", set the flag indicating that
1449 this is a secure option, and loop to read the next word. */
1451 for (n = 0; n < 2; n++)
1453 while (isalnum(*s) || *s == '_')
1455 if (ptr < sizeof(name)-1) name[ptr++] = *s;
1459 while (isspace(*s)) s++;
1460 if (Ustrcmp(name, "hide") != 0) break;
1461 issecure = opt_secure;
1465 /* Deal with "no_" or "not_" here for booleans */
1467 if (Ustrncmp(name, "no_", 3) == 0)
1473 if (Ustrncmp(name, "not_", 4) == 0)
1479 /* Search the list for the given name. A non-existent name, or an option that
1480 is set twice, is a disaster. */
1482 ol = find_option(name + offset, oltop, last);
1486 if (unknown_txt == NULL) return FALSE;
1487 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, CS unknown_txt, name);
1490 if ((ol->type & opt_set) && !(ol->type & (opt_rep_con | opt_rep_str)))
1491 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1492 "\"%s\" option set for the second time", name);
1494 ol->type |= opt_set | issecure;
1495 type = ol->type & opt_mask;
1497 /* Types with data values must be followed by '='; the "no[t]_" prefix
1498 applies only to boolean values. */
1500 if (type < opt_bool || type > opt_bool_last)
1503 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1504 "negation prefix applied to a non-boolean option");
1506 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1507 "unexpected end of line (data missing) after %s", name);
1509 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "missing \"=\" after %s", name);
1512 /* If a boolean wasn't preceded by "no[t]_" it can be followed by = and
1513 true/false/yes/no, or, in the case of opt_expand_bool, a general string that
1514 ultimately expands to one of those values. */
1516 else if (*s != 0 && (offset != 0 || *s != '='))
1517 extra_chars_error(s, US"boolean option ", name, US"");
1519 /* Skip white space after = */
1521 if (*s == '=') while (isspace((*(++s))));
1523 /* If there is a data block and the opt_public flag is not set, change
1524 the data block pointer to the private options block. */
1526 if (data_block != NULL && (ol->type & opt_public) == 0)
1527 data_block = (void *)(((driver_instance *)data_block)->options_block);
1529 /* Now get the data according to the type. */
1533 /* If a string value is not enclosed in quotes, it consists of
1534 the rest of the current line, verbatim. Otherwise, string escapes
1537 A transport is specified as a string, which is then looked up in the
1538 list of transports. A search type is specified as one of a number of
1541 A set or rewrite rules for a driver is specified as a string, which is
1542 then parsed into a suitable chain of control blocks.
1544 Uids and gids are specified as strings which are then looked up in the
1545 passwd file. Lists of uids and gids are similarly specified as colon-
1546 separated strings. */
1551 case opt_expand_uid:
1552 case opt_expand_gid:
1557 reset_point = sptr = read_string(s, name);
1559 /* Having read a string, we now have several different ways of using it,
1560 depending on the data type, so do another switch. If keeping the actual
1561 string is not required (because it is interpreted), freesptr is set TRUE,
1562 and at the end we reset the pool. */
1566 /* If this was a string, set the variable to point to the new string,
1567 and set the flag so its store isn't reclaimed. If it was a list of rewrite
1568 rules, we still keep the string (for printing), and parse the rules into a
1569 control block and flags word. */
1572 if (data_block == NULL)
1573 str_target = (uschar **)(ol->value);
1575 str_target = (uschar **)((uschar *)data_block + (long int)(ol->value));
1576 if (ol->type & opt_rep_con)
1578 /* We already have a condition, we're conducting a crude hack to let
1579 multiple condition rules be chained together, despite storing them in
1581 saved_condition = *str_target;
1582 strtemp = string_sprintf("${if and{{bool_lax{%s}}{bool_lax{%s}}}}",
1583 saved_condition, sptr);
1584 *str_target = string_copy_malloc(strtemp);
1585 /* TODO(pdp): there is a memory leak here and just below
1586 when we set 3 or more conditions; I still don't
1587 understand the store mechanism enough to know
1588 what's the safe way to free content from an earlier store.
1589 AFAICT, stores stack, so freeing an early stored item also stores
1590 all data alloc'd after it. If we knew conditions were adjacent,
1591 we could survive that, but we don't. So I *think* we need to take
1592 another bit from opt_type to indicate "malloced"; this seems like
1593 quite a hack, especially for this one case. It also means that
1594 we can't ever reclaim the store from the *first* condition.
1596 Because we only do this once, near process start-up, I'm prepared to
1597 let this slide for the time being, even though it rankles. */
1599 else if (ol->type & opt_rep_str)
1601 uschar sep_o = Ustrncmp(name, "headers_add", 11)==0 ? '\n' : ':';
1602 int sep_i = -(int)sep_o;
1603 const uschar * list = sptr;
1605 uschar * list_o = *str_target;
1607 while ((s = string_nextinlist(&list, &sep_i, NULL, 0)))
1608 list_o = string_append_listele(list_o, sep_o, s);
1610 *str_target = string_copy_malloc(list_o);
1620 if (data_block == NULL)
1621 *((uschar **)(ol->value)) = sptr;
1623 *((uschar **)((uschar *)data_block + (long int)(ol->value))) = sptr;
1625 if (type == opt_rewrite)
1630 rewrite_rule **chain;
1633 sprintf(CS name2, "*%.50s_rules", name);
1634 ol2 = find_option(name2, oltop, last);
1635 sprintf(CS name2, "*%.50s_flags", name);
1636 ol3 = find_option(name2, oltop, last);
1638 if (ol2 == NULL || ol3 == NULL)
1639 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1640 "rewrite rules not available for driver");
1642 if (data_block == NULL)
1644 chain = (rewrite_rule **)(ol2->value);
1645 flagptr = (int *)(ol3->value);
1649 chain = (rewrite_rule **)((uschar *)data_block + (long int)(ol2->value));
1650 flagptr = (int *)((uschar *)data_block + (long int)(ol3->value));
1653 while ((p = string_nextinlist(CUSS &sptr, &sep, big_buffer, BIG_BUFFER_SIZE)))
1655 rewrite_rule *next = readconf_one_rewrite(p, flagptr, FALSE);
1657 chain = &(next->next);
1660 if ((*flagptr & (rewrite_all_envelope | rewrite_smtp)) != 0)
1661 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "rewrite rule specifies a "
1662 "non-header rewrite - not allowed at transport time -");
1666 /* If it was an expanded uid, see if there is any expansion to be
1667 done by checking for the presence of a $ character. If there is, save it
1668 in the corresponding *expand_user option field. Otherwise, fall through
1669 to treat it as a fixed uid. Ensure mutual exclusivity of the two kinds
1672 case opt_expand_uid:
1673 sprintf(CS name2, "*expand_%.50s", name);
1674 ol2 = find_option(name2, oltop, last);
1677 uschar *ss = (Ustrchr(sptr, '$') != NULL)? sptr : NULL;
1679 if (data_block == NULL)
1680 *((uschar **)(ol2->value)) = ss;
1682 *((uschar **)((uschar *)data_block + (long int)(ol2->value))) = ss;
1686 *(get_set_flag(name, oltop, last, data_block)) = FALSE;
1692 /* Look up a fixed uid, and also make use of the corresponding gid
1693 if a passwd entry is returned and the gid has not been set. */
1696 if (!route_finduser(sptr, &pw, &uid))
1697 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "user %s was not found", sptr);
1698 if (data_block == NULL)
1699 *((uid_t *)(ol->value)) = uid;
1701 *((uid_t *)((uschar *)data_block + (long int)(ol->value))) = uid;
1703 /* Set the flag indicating a fixed value is set */
1705 *(get_set_flag(name, oltop, last, data_block)) = TRUE;
1707 /* Handle matching gid if we have a passwd entry: done by finding the
1708 same name with terminating "user" changed to "group"; if not found,
1709 ignore. Also ignore if the value is already set. */
1711 if (pw == NULL) break;
1712 Ustrcpy(name+Ustrlen(name)-4, "group");
1713 ol2 = find_option(name, oltop, last);
1714 if (ol2 != NULL && ((ol2->type & opt_mask) == opt_gid ||
1715 (ol2->type & opt_mask) == opt_expand_gid))
1717 BOOL *set_flag = get_set_flag(name, oltop, last, data_block);
1720 if (data_block == NULL)
1721 *((gid_t *)(ol2->value)) = pw->pw_gid;
1723 *((gid_t *)((uschar *)data_block + (long int)(ol2->value))) = pw->pw_gid;
1729 /* If it was an expanded gid, see if there is any expansion to be
1730 done by checking for the presence of a $ character. If there is, save it
1731 in the corresponding *expand_user option field. Otherwise, fall through
1732 to treat it as a fixed gid. Ensure mutual exclusivity of the two kinds
1735 case opt_expand_gid:
1736 sprintf(CS name2, "*expand_%.50s", name);
1737 ol2 = find_option(name2, oltop, last);
1740 uschar *ss = (Ustrchr(sptr, '$') != NULL)? sptr : NULL;
1742 if (data_block == NULL)
1743 *((uschar **)(ol2->value)) = ss;
1745 *((uschar **)((uschar *)data_block + (long int)(ol2->value))) = ss;
1749 *(get_set_flag(name, oltop, last, data_block)) = FALSE;
1755 /* Handle freestanding gid */
1758 if (!route_findgroup(sptr, &gid))
1759 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "group %s was not found", sptr);
1760 if (data_block == NULL)
1761 *((gid_t *)(ol->value)) = gid;
1763 *((gid_t *)((uschar *)data_block + (long int)(ol->value))) = gid;
1764 *(get_set_flag(name, oltop, last, data_block)) = TRUE;
1767 /* If it was a uid list, look up each individual entry, and build
1768 a vector of uids, with a count in the first element. Put the vector
1769 in malloc store so we can free the string. (We are reading into
1770 permanent store already.) */
1778 const uschar *op = expand_string (sptr);
1781 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "failed to expand %s: %s",
1782 name, expand_string_message);
1785 if (*p != 0) count++;
1786 while (*p != 0) if (*p++ == ':' && *p != 0) count++;
1787 list = store_malloc(count*sizeof(uid_t));
1788 list[ptr++] = (uid_t)(count - 1);
1790 if (data_block == NULL)
1791 *((uid_t **)(ol->value)) = list;
1793 *((uid_t **)((uschar *)data_block + (long int)(ol->value))) = list;
1799 (void)string_nextinlist(&p, &sep, big_buffer, BIG_BUFFER_SIZE);
1800 if (!route_finduser(big_buffer, NULL, &uid))
1801 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "user %s was not found",
1808 /* If it was a gid list, look up each individual entry, and build
1809 a vector of gids, with a count in the first element. Put the vector
1810 in malloc store so we can free the string. (We are reading into permanent
1819 const uschar *op = expand_string (sptr);
1822 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "failed to expand %s: %s",
1823 name, expand_string_message);
1826 if (*p != 0) count++;
1827 while (*p != 0) if (*p++ == ':' && *p != 0) count++;
1828 list = store_malloc(count*sizeof(gid_t));
1829 list[ptr++] = (gid_t)(count - 1);
1831 if (data_block == NULL)
1832 *((gid_t **)(ol->value)) = list;
1834 *((gid_t **)((uschar *)data_block + (long int)(ol->value))) = list;
1840 (void)string_nextinlist(&p, &sep, big_buffer, BIG_BUFFER_SIZE);
1841 if (!route_findgroup(big_buffer, &gid))
1842 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "group %s was not found",
1850 /* Release store if the value of the string doesn't need to be kept. */
1852 if (freesptr) store_reset(reset_point);
1855 /* Expanded boolean: if no characters follow, or if there are no dollar
1856 characters, this is a fixed-valued boolean, and we fall through. Otherwise,
1857 save the string for later expansion in the alternate place. */
1859 case opt_expand_bool:
1860 if (*s != 0 && Ustrchr(s, '$') != 0)
1862 sprintf(CS name2, "*expand_%.50s", name);
1863 ol2 = find_option(name2, oltop, last);
1866 reset_point = sptr = read_string(s, name);
1867 if (data_block == NULL)
1868 *((uschar **)(ol2->value)) = sptr;
1870 *((uschar **)((uschar *)data_block + (long int)(ol2->value))) = sptr;
1877 /* Boolean: if no characters follow, the value is boolvalue. Otherwise
1878 look for yes/not/true/false. Some booleans are stored in a single bit in
1879 a single int. There's a special fudge for verify settings; without a suffix
1880 they set both xx_sender and xx_recipient. The table points to the sender
1881 value; search subsequently for the recipient. There's another special case:
1882 opt_bool_set also notes when a boolean has been set. */
1886 case opt_bool_verify:
1890 s = readconf_readname(name2, 64, s);
1891 if (strcmpic(name2, US"true") == 0 || strcmpic(name2, US"yes") == 0)
1893 else if (strcmpic(name2, US"false") == 0 || strcmpic(name2, US"no") == 0)
1895 else log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1896 "\"%s\" is not a valid value for the \"%s\" option", name2, name);
1897 if (*s != 0) extra_chars_error(s, string_sprintf("\"%s\" ", name2),
1898 US"for boolean option ", name);
1901 /* Handle single-bit type. */
1903 if (type == opt_bit)
1905 int bit = 1 << ((ol->type >> 16) & 31);
1906 int *ptr = (data_block == NULL)?
1907 (int *)(ol->value) :
1908 (int *)((uschar *)data_block + (long int)ol->value);
1909 if (boolvalue) *ptr |= bit; else *ptr &= ~bit;
1913 /* Handle full BOOL types */
1915 if (data_block == NULL)
1916 *((BOOL *)(ol->value)) = boolvalue;
1918 *((BOOL *)((uschar *)data_block + (long int)(ol->value))) = boolvalue;
1922 if (type == opt_bool_verify)
1924 sprintf(CS name2, "%.50s_recipient", name + offset);
1925 ol2 = find_option(name2, oltop, last);
1928 if (data_block == NULL)
1929 *((BOOL *)(ol2->value)) = boolvalue;
1931 *((BOOL *)((uschar *)data_block + (long int)(ol2->value))) = boolvalue;
1935 /* Note that opt_bool_set type is set, if there is somewhere to do so */
1937 else if (type == opt_bool_set)
1939 sprintf(CS name2, "*set_%.50s", name + offset);
1940 ol2 = find_option(name2, oltop, last);
1943 if (data_block == NULL)
1944 *((BOOL *)(ol2->value)) = TRUE;
1946 *((BOOL *)((uschar *)data_block + (long int)(ol2->value))) = TRUE;
1955 inttype = US"octal ";
1957 /* Integer: a simple(ish) case; allow octal and hex formats, and
1958 suffixes K and M. The different types affect output, not input. */
1967 lvalue = strtol(CS s, CSS &endptr, intbase);
1970 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "%sinteger expected for %s",
1973 if (errno != ERANGE)
1975 if (tolower(*endptr) == 'k')
1977 if (lvalue > INT_MAX/1024 || lvalue < INT_MIN/1024) errno = ERANGE;
1978 else lvalue *= 1024;
1981 else if (tolower(*endptr) == 'm')
1983 if (lvalue > INT_MAX/(1024*1024) || lvalue < INT_MIN/(1024*1024))
1985 else lvalue *= 1024*1024;
1990 if (errno == ERANGE || lvalue > INT_MAX || lvalue < INT_MIN)
1991 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1992 "absolute value of integer \"%s\" is too large (overflow)", s);
1994 while (isspace(*endptr)) endptr++;
1996 extra_chars_error(endptr, inttype, US"integer value for ", name);
1998 value = (int)lvalue;
2001 if (data_block == NULL)
2002 *((int *)(ol->value)) = value;
2004 *((int *)((uschar *)data_block + (long int)(ol->value))) = value;
2007 /* Integer held in K: again, allow octal and hex formats, and suffixes K and
2014 value = strtol(CS s, CSS &endptr, intbase);
2017 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "%sinteger expected for %s",
2020 if (errno != ERANGE)
2022 if (tolower(*endptr) == 'm')
2024 if (value > INT_MAX/1024 || value < INT_MIN/1024) errno = ERANGE;
2028 else if (tolower(*endptr) == 'k')
2034 value = (value + 512)/1024;
2038 if (errno == ERANGE) log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
2039 "absolute value of integer \"%s\" is too large (overflow)", s);
2041 while (isspace(*endptr)) endptr++;
2043 extra_chars_error(endptr, inttype, US"integer value for ", name);
2046 if (data_block == NULL)
2047 *((int *)(ol->value)) = value;
2049 *((int *)((uschar *)data_block + (long int)(ol->value))) = value;
2052 /* Fixed-point number: held to 3 decimal places. */
2055 if (sscanf(CS s, "%d%n", &value, &count) != 1)
2056 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
2057 "fixed-point number expected for %s", name);
2059 if (value < 0) log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
2060 "integer \"%s\" is too large (overflow)", s);
2064 if (value < 0) log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
2065 "integer \"%s\" is too large (overflow)", s);
2067 if (s[count] == '.')
2070 while (isdigit(s[++count]))
2072 value += (s[count] - '0') * d;
2077 while (isspace(s[count])) count++;
2080 extra_chars_error(s+count, US"fixed-point value for ", name, US"");
2082 if (data_block == NULL)
2083 *((int *)(ol->value)) = value;
2085 *((int *)((uschar *)data_block + (long int)(ol->value))) = value;
2088 /* There's a special routine to read time values. */
2091 value = readconf_readtime(s, 0, FALSE);
2093 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "invalid time value for %s",
2095 if (data_block == NULL)
2096 *((int *)(ol->value)) = value;
2098 *((int *)((uschar *)data_block + (long int)(ol->value))) = value;
2101 /* A time list is a list of colon-separated times, with the first
2102 element holding the size of the list and the second the number of
2108 int *list = (data_block == NULL)?
2109 (int *)(ol->value) :
2110 (int *)((uschar *)data_block + (long int)(ol->value));
2112 if (*s != 0) for (count = 1; count <= list[0] - 2; count++)
2115 uschar *snext = Ustrchr(s, ':');
2119 while (ss > s && isspace(ss[-1])) ss--;
2122 value = readconf_readtime(s, terminator, FALSE);
2124 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "invalid time value for %s",
2126 if (count > 1 && value <= list[count])
2127 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
2128 "time value out of order for %s", name);
2129 list[count+1] = value;
2130 if (snext == NULL) break;
2132 while (isspace(*s)) s++;
2135 if (count > list[0] - 2)
2136 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "too many time values for %s",
2138 if (count > 0 && list[2] == 0) count = 0;
2145 void (*fn)() = ol->value;
2156 /*************************************************
2157 * Print a time value *
2158 *************************************************/
2161 Argument: a time value in seconds
2162 Returns: pointer to a fixed buffer containing the time as a string,
2163 in readconf_readtime() format
2167 readconf_printtime(int t)
2170 uschar *p = time_buffer;
2187 if (w > 0) { sprintf(CS p, "%dw", w); while (*p) p++; }
2188 if (d > 0) { sprintf(CS p, "%dd", d); while (*p) p++; }
2189 if (h > 0) { sprintf(CS p, "%dh", h); while (*p) p++; }
2190 if (m > 0) { sprintf(CS p, "%dm", m); while (*p) p++; }
2191 if (s > 0 || p == time_buffer) sprintf(CS p, "%ds", s);
2198 /*************************************************
2199 * Print an individual option value *
2200 *************************************************/
2202 /* This is used by the -bP option, so prints to the standard output.
2203 The entire options list is passed in as an argument, because some options come
2204 in pairs - typically uid/gid settings, which can either be explicit numerical
2205 values, or strings to be expanded later. If the numerical value is unset,
2206 search for "*expand_<name>" to see if there is a string equivalent.
2209 ol option entry, or NULL for an unknown option
2211 options_block NULL for main configuration options; otherwise points to
2212 a driver block; if the option doesn't have opt_public
2213 set, then options_block->options_block is where the item
2215 oltop points to the option list in which ol exists
2216 last one more than the offset of the last entry in optop
2217 no_labels do not show "foo = " at the start.
2223 print_ol(optionlist *ol, uschar *name, void *options_block,
2224 optionlist *oltop, int last, BOOL no_labels)
2237 printf("%s is not a known option\n", name);
2241 /* Non-admin callers cannot see options that have been flagged secure by the
2244 if (!admin_user && (ol->type & opt_secure) != 0)
2246 const char * const hidden = "<value not displayable>";
2248 printf("%s\n", hidden);
2250 printf("%s = %s\n", name, hidden);
2254 /* Else show the value of the option */
2257 if (options_block != NULL)
2259 if ((ol->type & opt_public) == 0)
2260 options_block = (void *)(((driver_instance *)options_block)->options_block);
2261 value = (void *)((uschar *)options_block + (long int)value);
2264 switch(ol->type & opt_mask)
2267 case opt_rewrite: /* Show the text value */
2268 s = *((uschar **)value);
2269 if (!no_labels) printf("%s = ", name);
2270 printf("%s\n", (s == NULL)? US"" : string_printing2(s, FALSE));
2274 if (!no_labels) printf("%s = ", name);
2275 printf("%d\n", *((int *)value));
2280 int x = *((int *)value);
2281 if (x != 0 && (x & 1023) == 0)
2285 if ((x & 1023) == 0)
2290 if (!no_labels) printf("%s = ", name);
2291 printf("%d%c\n", x, c);
2295 if (!no_labels) printf("%s = ", name);
2303 int x = *((int *)value);
2304 if (!no_labels) printf("%s = ", name);
2305 if (x == 0) printf("0\n");
2306 else if ((x & 1023) == 0) printf("%dM\n", x >> 10);
2307 else printf("%dK\n", x);
2312 if (!no_labels) printf("%s = ", name);
2313 printf("%#o\n", *((int *)value));
2316 /* Can be negative only when "unset", in which case integer */
2320 int x = *((int *)value);
2323 if (x < 0) printf("%s =\n", name); else
2325 if (!no_labels) printf("%s = ", name);
2326 printf("%d.", x/1000);
2339 /* If the numerical value is unset, try for the string value */
2341 case opt_expand_uid:
2342 if (! *get_set_flag(name, oltop, last, options_block))
2344 sprintf(CS name2, "*expand_%.50s", name);
2345 ol2 = find_option(name2, oltop, last);
2348 void *value2 = ol2->value;
2349 if (options_block != NULL)
2350 value2 = (void *)((uschar *)options_block + (long int)value2);
2351 s = *((uschar **)value2);
2352 if (!no_labels) printf("%s = ", name);
2353 printf("%s\n", (s == NULL)? US"" : string_printing(s));
2358 /* Else fall through */
2361 if (!no_labels) printf("%s = ", name);
2362 if (! *get_set_flag(name, oltop, last, options_block))
2366 pw = getpwuid(*((uid_t *)value));
2368 printf("%ld\n", (long int)(*((uid_t *)value)));
2369 else printf("%s\n", pw->pw_name);
2373 /* If the numerical value is unset, try for the string value */
2375 case opt_expand_gid:
2376 if (! *get_set_flag(name, oltop, last, options_block))
2378 sprintf(CS name2, "*expand_%.50s", name);
2379 ol2 = find_option(name2, oltop, last);
2380 if (ol2 != NULL && (ol2->type & opt_mask) == opt_stringptr)
2382 void *value2 = ol2->value;
2383 if (options_block != NULL)
2384 value2 = (void *)((uschar *)options_block + (long int)value2);
2385 s = *((uschar **)value2);
2386 if (!no_labels) printf("%s = ", name);
2387 printf("%s\n", (s == NULL)? US"" : string_printing(s));
2392 /* Else fall through */
2395 if (!no_labels) printf("%s = ", name);
2396 if (! *get_set_flag(name, oltop, last, options_block))
2400 gr = getgrgid(*((int *)value));
2402 printf("%ld\n", (long int)(*((int *)value)));
2403 else printf("%s\n", gr->gr_name);
2408 uidlist = *((uid_t **)value);
2409 if (!no_labels) printf("%s =", name);
2410 if (uidlist != NULL)
2414 if (no_labels) sep = '\0';
2415 for (i = 1; i <= (int)(uidlist[0]); i++)
2417 uschar *name = NULL;
2418 pw = getpwuid(uidlist[i]);
2419 if (pw != NULL) name = US pw->pw_name;
2420 if (sep != '\0') printf("%c", sep);
2421 if (name != NULL) printf("%s", name);
2422 else printf("%ld", (long int)(uidlist[i]));
2430 gidlist = *((gid_t **)value);
2431 if (!no_labels) printf("%s =", name);
2432 if (gidlist != NULL)
2436 if (no_labels) sep = '\0';
2437 for (i = 1; i <= (int)(gidlist[0]); i++)
2439 uschar *name = NULL;
2440 gr = getgrgid(gidlist[i]);
2441 if (gr != NULL) name = US gr->gr_name;
2442 if (sep != '\0') printf("%c", sep);
2443 if (name != NULL) printf("%s", name);
2444 else printf("%ld", (long int)(gidlist[i]));
2452 if (!no_labels) printf("%s = ", name);
2453 printf("%s\n", readconf_printtime(*((int *)value)));
2459 int *list = (int *)value;
2460 if (!no_labels) printf("%s = ", name);
2461 for (i = 0; i < list[1]; i++)
2462 printf("%s%s", (i == 0)? "" : ":", readconf_printtime(list[i+2]));
2468 printf("%s%s\n", ((*((int *)value)) & (1 << ((ol->type >> 16) & 31)))?
2472 case opt_expand_bool:
2473 sprintf(CS name2, "*expand_%.50s", name);
2474 ol2 = find_option(name2, oltop, last);
2475 if (ol2 != NULL && ol2->value != NULL)
2477 void *value2 = ol2->value;
2478 if (options_block != NULL)
2479 value2 = (void *)((uschar *)options_block + (long int)value2);
2480 s = *((uschar **)value2);
2483 if (!no_labels) printf("%s = ", name);
2484 printf("%s\n", string_printing(s));
2487 /* s == NULL => string not set; fall through */
2493 case opt_bool_verify:
2495 printf("%s%s\n", (*((BOOL *)value))? "" : "no_", name);
2502 /*************************************************
2503 * Print value from main configuration *
2504 *************************************************/
2506 /* This function, called as a result of encountering the -bP option,
2507 causes the value of any main configuration variable to be output if the
2508 second argument is NULL. There are some special values:
2510 all print all main configuration options
2511 configure_file print the name of the configuration file
2512 routers print the routers' configurations
2513 transports print the transports' configuration
2514 authenticators print the authenticators' configuration
2515 macros print the macros' configuration
2516 router_list print a list of router names
2517 transport_list print a list of transport names
2518 authenticator_list print a list of authentication mechanism names
2519 macro_list print a list of macro names
2520 +name print a named list item
2521 local_scan print the local_scan options
2523 If the second argument is not NULL, it must be one of "router", "transport",
2524 "authenticator" or "macro" in which case the first argument identifies the
2525 driver whose options are to be printed.
2528 name option name if type == NULL; else driver name
2529 type NULL or driver type name, as described above
2530 no_labels avoid the "foo = " at the start of an item
2536 readconf_print(uschar *name, uschar *type, BOOL no_labels)
2538 BOOL names_only = FALSE;
2540 optionlist *ol2 = NULL;
2541 driver_instance *d = NULL;
2552 static uschar *types[] = { US"address", US"domain", US"host",
2554 static tree_node **anchors[] = { &addresslist_anchor, &domainlist_anchor,
2555 &hostlist_anchor, &localpartlist_anchor };
2557 for (i = 0; i < 4; i++)
2559 t = tree_search(*(anchors[i]), name+1);
2564 printf("%s\n", ((namedlist_block *)(t->data.ptr))->string);
2566 printf("%slist %s = %s\n", types[i], name+1,
2567 ((namedlist_block *)(t->data.ptr))->string);
2572 printf("no address, domain, host, or local part list called \"%s\" "
2573 "exists\n", name+1);
2578 if (Ustrcmp(name, "configure_file") == 0)
2580 printf("%s\n", CS config_main_filename);
2584 if (Ustrcmp(name, "all") == 0)
2586 for (ol = optionlist_config;
2587 ol < optionlist_config + optionlist_config_size; ol++)
2589 if ((ol->type & opt_hidden) == 0)
2590 print_ol(ol, US ol->name, NULL,
2591 optionlist_config, optionlist_config_size,
2597 if (Ustrcmp(name, "local_scan") == 0)
2599 #ifndef LOCAL_SCAN_HAS_OPTIONS
2600 printf("local_scan() options are not supported\n");
2602 for (ol = local_scan_options;
2603 ol < local_scan_options + local_scan_options_count; ol++)
2605 print_ol(ol, US ol->name, NULL, local_scan_options,
2606 local_scan_options_count, no_labels);
2612 if (Ustrcmp(name, "routers") == 0)
2617 else if (Ustrcmp(name, "transports") == 0)
2619 type = US"transport";
2623 else if (Ustrcmp(name, "authenticators") == 0)
2625 type = US"authenticator";
2629 else if (Ustrcmp(name, "macros") == 0)
2635 else if (Ustrcmp(name, "router_list") == 0)
2642 else if (Ustrcmp(name, "transport_list") == 0)
2644 type = US"transport";
2649 else if (Ustrcmp(name, "authenticator_list") == 0)
2651 type = US"authenticator";
2656 else if (Ustrcmp(name, "macro_list") == 0)
2665 print_ol(find_option(name, optionlist_config, optionlist_config_size),
2666 name, NULL, optionlist_config, optionlist_config_size, no_labels);
2671 /* Handle the options for a router or transport. Skip options that are flagged
2672 as hidden. Some of these are options with names starting with '*', used for
2673 internal alternative representations of other options (which the printing
2674 function will sort out). Others are synonyms kept for backward compatibility.
2677 if (Ustrcmp(type, "router") == 0)
2679 d = (driver_instance *)routers;
2680 ol2 = optionlist_routers;
2681 size = optionlist_routers_size;
2683 else if (Ustrcmp(type, "transport") == 0)
2685 d = (driver_instance *)transports;
2686 ol2 = optionlist_transports;
2687 size = optionlist_transports_size;
2689 else if (Ustrcmp(type, "authenticator") == 0)
2691 d = (driver_instance *)auths;
2692 ol2 = optionlist_auths;
2693 size = optionlist_auths_size;
2696 else if (Ustrcmp(type, "macro") == 0)
2698 /* People store passwords in macros and they were previously not available
2699 for printing. So we have an admin_users restriction. */
2702 fprintf(stderr, "exim: permission denied\n");
2705 for (m = macros; m != NULL; m = m->next)
2707 if (name == NULL || Ustrcmp(name, m->name) == 0)
2710 printf("%s\n", CS m->name);
2712 printf("%s=%s\n", CS m->name, CS m->replacement);
2718 printf("%s %s not found\n", type, name);
2724 for (; d != NULL; d = d->next) printf("%s\n", CS d->name);
2728 /* Either search for a given driver, or print all of them */
2730 for (; d != NULL; d = d->next)
2733 printf("\n%s %s:\n", d->name, type);
2734 else if (Ustrcmp(d->name, name) != 0) continue;
2736 for (ol = ol2; ol < ol2 + size; ol++)
2738 if ((ol->type & opt_hidden) == 0)
2739 print_ol(ol, US ol->name, d, ol2, size, no_labels);
2742 for (ol = d->info->options;
2743 ol < d->info->options + *(d->info->options_count); ol++)
2745 if ((ol->type & opt_hidden) == 0)
2746 print_ol(ol, US ol->name, d, d->info->options, *(d->info->options_count), no_labels);
2748 if (name != NULL) return;
2750 if (name != NULL) printf("%s %s not found\n", type, name);
2755 /*************************************************
2756 * Read a named list item *
2757 *************************************************/
2759 /* This function reads a name and a list (i.e. string). The name is used to
2760 save the list in a tree, sorted by its name. Each entry also has a number,
2761 which can be used for caching tests, but if the string contains any expansion
2762 items other than $key, the number is set negative to inhibit caching. This
2763 mechanism is used for domain, host, and address lists that are referenced by
2767 anchorp points to the tree anchor
2768 numberp points to the current number for this tree
2769 max the maximum number permitted
2770 s the text of the option line, starting immediately after the name
2772 tname the name of the list type, for messages
2778 read_named_list(tree_node **anchorp, int *numberp, int max, uschar *s,
2781 BOOL forcecache = FALSE;
2784 namedlist_block *nb = store_get(sizeof(namedlist_block));
2786 if (Ustrncmp(s, "_cache", 6) == 0)
2793 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "unrecognized configuration line");
2795 if (*numberp >= max)
2796 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "too many named %ss (max is %d)\n",
2799 while (isspace(*s)) s++;
2801 while (isalnum(*s) || *s == '_') s++;
2802 t = store_get(sizeof(tree_node) + s-ss);
2803 Ustrncpy(t->name, ss, s-ss);
2805 while (isspace(*s)) s++;
2807 if (!tree_insertnode(anchorp, t))
2808 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
2809 "duplicate name \"%s\" for a named %s", t->name, tname);
2812 nb->number = *numberp;
2815 if (*s++ != '=') log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
2816 "missing '=' after \"%s\"", t->name);
2817 while (isspace(*s)) s++;
2818 nb->string = read_string(s, t->name);
2819 nb->cache_data = NULL;
2821 /* Check the string for any expansions; if any are found, mark this list
2822 uncacheable unless the user has explicited forced caching. */
2824 if (!forcecache && Ustrchr(nb->string, '$') != NULL) nb->number = -1;
2830 /*************************************************
2831 * Unpick data for a rate limit *
2832 *************************************************/
2834 /* This function is called to unpick smtp_ratelimit_{mail,rcpt} into four
2838 s string, in the form t,b,f,l
2839 where t is the threshold (integer)
2840 b is the initial delay (time)
2841 f is the multiplicative factor (fixed point)
2842 k is the maximum time (time)
2843 threshold where to store threshold
2844 base where to store base in milliseconds
2845 factor where to store factor in milliseconds
2846 limit where to store limit
2848 Returns: nothing (panics on error)
2852 unpick_ratelimit(uschar *s, int *threshold, int *base, double *factor,
2855 uschar bstring[16], lstring[16];
2857 if (sscanf(CS s, "%d, %15[0123456789smhdw.], %lf, %15s", threshold, bstring,
2858 factor, lstring) == 4)
2860 *base = readconf_readtime(bstring, 0, TRUE);
2861 *limit = readconf_readtime(lstring, 0, TRUE);
2862 if (*base >= 0 && *limit >= 0) return;
2864 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "malformed ratelimit data: %s", s);
2870 /*************************************************
2871 * Drop privs for checking TLS config *
2872 *************************************************/
2874 /* We want to validate TLS options during readconf, but do not want to be
2875 root when we call into the TLS library, in case of library linkage errors
2876 which cause segfaults; before this check, those were always done as the Exim
2877 runtime user and it makes sense to continue with that.
2879 Assumes: tls_require_ciphers has been set, if it will be
2880 exim_user has been set, if it will be
2881 exim_group has been set, if it will be
2883 Returns: bool for "okay"; false will cause caller to immediately exit.
2888 tls_dropprivs_validate_require_cipher(void)
2890 const uschar *errmsg;
2893 void (*oldsignal)(int);
2895 oldsignal = signal(SIGCHLD, SIG_DFL);
2898 if ((pid = fork()) < 0)
2899 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "fork failed for TLS check");
2903 /* in some modes, will have dropped privilege already */
2905 exim_setugid(exim_uid, exim_gid, FALSE,
2906 US"calling tls_validate_require_cipher");
2908 errmsg = tls_validate_require_cipher();
2911 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
2912 "tls_require_ciphers invalid: %s", errmsg);
2919 rc = waitpid(pid, &status, 0);
2920 } while (rc < 0 && errno == EINTR);
2923 debug_printf("tls_validate_require_cipher child %d ended: status=0x%x\n",
2926 signal(SIGCHLD, oldsignal);
2930 #endif /* SUPPORT_TLS */
2935 /*************************************************
2936 * Read main configuration options *
2937 *************************************************/
2939 /* This function is the first to be called for configuration reading. It
2940 opens the configuration file and reads general configuration settings until
2941 it reaches the end of the configuration section. The file is then left open so
2942 that the remaining configuration data can subsequently be read if needed for
2945 The configuration file must be owned either by root or exim, and be writeable
2946 only by root or uid/gid exim. The values for Exim's uid and gid can be changed
2947 in the config file, so the test is done on the compiled in values. A slight
2948 anomaly, to be carefully documented.
2950 The name of the configuration file is taken from a list that is included in the
2951 binary of Exim. It can be altered from the command line, but if that is done,
2952 root privilege is immediately withdrawn unless the caller is root or exim.
2953 The first file on the list that exists is used.
2955 For use on multiple systems that share file systems, first look for a
2956 configuration file whose name has the current node name on the end. If that is
2957 not found, try the generic name. For really contorted configurations, that run
2958 multiple Exims with different uid settings, first try adding the effective uid
2959 before the node name. These complications are going to waste resources on most
2960 systems. Therefore they are available only when requested by compile-time
2967 struct stat statbuf;
2968 uschar *s, *filename;
2969 const uschar *list = config_main_filelist;
2971 /* Loop through the possible file names */
2973 while((filename = string_nextinlist(&list, &sep, big_buffer, big_buffer_size))
2976 /* Cut out all the fancy processing unless specifically wanted */
2978 #if defined(CONFIGURE_FILE_USE_NODE) || defined(CONFIGURE_FILE_USE_EUID)
2979 uschar *suffix = filename + Ustrlen(filename);
2981 /* Try for the node-specific file if a node name exists */
2983 #ifdef CONFIGURE_FILE_USE_NODE
2985 if (uname(&uts) >= 0)
2987 #ifdef CONFIGURE_FILE_USE_EUID
2988 sprintf(CS suffix, ".%ld.%.256s", (long int)original_euid, uts.nodename);
2989 config_file = Ufopen(filename, "rb");
2990 if (config_file == NULL)
2991 #endif /* CONFIGURE_FILE_USE_EUID */
2993 sprintf(CS suffix, ".%.256s", uts.nodename);
2994 config_file = Ufopen(filename, "rb");
2997 #endif /* CONFIGURE_FILE_USE_NODE */
2999 /* Otherwise, try the generic name, possibly with the euid added */
3001 #ifdef CONFIGURE_FILE_USE_EUID
3002 if (config_file == NULL)
3004 sprintf(CS suffix, ".%ld", (long int)original_euid);
3005 config_file = Ufopen(filename, "rb");
3007 #endif /* CONFIGURE_FILE_USE_EUID */
3009 /* Finally, try the unadorned name */
3011 if (config_file == NULL)
3014 config_file = Ufopen(filename, "rb");
3016 #else /* if neither defined */
3018 /* This is the common case when the fancy processing is not included. */
3020 config_file = Ufopen(filename, "rb");
3023 /* If the file does not exist, continue to try any others. For any other
3024 error, break out (and die). */
3026 if (config_file != NULL || errno != ENOENT) break;
3029 /* On success, save the name for verification; config_filename is used when
3030 logging configuration errors (it changes for .included files) whereas
3031 config_main_filename is the name shown by -bP. Failure to open a configuration
3032 file is a serious disaster. */
3034 if (config_file != NULL)
3037 config_filename = config_main_filename = string_copy(filename);
3039 p = Ustrrchr(filename, '/');
3040 config_main_directory = p ? string_copyn(filename, p - filename)
3041 : string_copy(US".");
3045 if (filename == NULL)
3046 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "non-existent configuration file(s): "
3047 "%s", config_main_filelist);
3049 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "%s", string_open_failed(errno,
3050 "configuration file %s", filename));
3053 /* Check the status of the file we have opened, if we have retained root
3054 privileges and the file isn't /dev/null (which *should* be 0666). */
3056 if (trusted_config && Ustrcmp(filename, US"/dev/null"))
3058 if (fstat(fileno(config_file), &statbuf) != 0)
3059 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "failed to stat configuration file %s",
3062 if ((statbuf.st_uid != root_uid /* owner not root */
3063 #ifdef CONFIGURE_OWNER
3064 && statbuf.st_uid != config_uid /* owner not the special one */
3067 (statbuf.st_gid != root_gid /* group not root & */
3068 #ifdef CONFIGURE_GROUP
3069 && statbuf.st_gid != config_gid /* group not the special one */
3071 && (statbuf.st_mode & 020) != 0) || /* group writeable */
3073 ((statbuf.st_mode & 2) != 0)) /* world writeable */
3075 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "Exim configuration file %s has the "
3076 "wrong owner, group, or mode", big_buffer);
3079 /* Process the main configuration settings. They all begin with a lower case
3080 letter. If we see something starting with an upper case letter, it is taken as
3081 a macro definition. */
3083 while ((s = get_config_line()) != NULL)
3085 if (isupper(s[0])) read_macro_assignment(s);
3087 else if (Ustrncmp(s, "domainlist", 10) == 0)
3088 read_named_list(&domainlist_anchor, &domainlist_count,
3089 MAX_NAMED_LIST, s+10, US"domain list");
3091 else if (Ustrncmp(s, "hostlist", 8) == 0)
3092 read_named_list(&hostlist_anchor, &hostlist_count,
3093 MAX_NAMED_LIST, s+8, US"host list");
3095 else if (Ustrncmp(s, US"addresslist", 11) == 0)
3096 read_named_list(&addresslist_anchor, &addresslist_count,
3097 MAX_NAMED_LIST, s+11, US"address list");
3099 else if (Ustrncmp(s, US"localpartlist", 13) == 0)
3100 read_named_list(&localpartlist_anchor, &localpartlist_count,
3101 MAX_NAMED_LIST, s+13, US"local part list");
3104 (void) readconf_handle_option(s, optionlist_config, optionlist_config_size,
3105 NULL, US"main option \"%s\" unknown");
3109 /* If local_sender_retain is set, local_from_check must be unset. */
3111 if (local_sender_retain && local_from_check)
3112 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "both local_from_check and "
3113 "local_sender_retain are set; this combination is not allowed");
3115 /* If the timezone string is empty, set it to NULL, implying no TZ variable
3118 if (timezone_string != NULL && *timezone_string == 0) timezone_string = NULL;
3120 /* The max retry interval must not be greater than 24 hours. */
3122 if (retry_interval_max > 24*60*60) retry_interval_max = 24*60*60;
3124 /* remote_max_parallel must be > 0 */
3126 if (remote_max_parallel <= 0) remote_max_parallel = 1;
3128 /* Save the configured setting of freeze_tell, so we can re-instate it at the
3129 start of a new SMTP message. */
3131 freeze_tell_config = freeze_tell;
3133 /* The primary host name may be required for expansion of spool_directory
3134 and log_file_path, so make sure it is set asap. It is obtained from uname(),
3135 but if that yields an unqualified value, make a FQDN by using gethostbyname to
3136 canonize it. Some people like upper case letters in their host names, so we
3137 don't force the case. */
3139 if (primary_hostname == NULL)
3141 const uschar *hostname;
3143 if (uname(&uts) < 0)
3144 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "uname() failed to yield host name");
3145 hostname = US uts.nodename;
3147 if (Ustrchr(hostname, '.') == NULL)
3150 struct hostent *hostdata;
3153 if (!disable_ipv6 && (dns_ipv4_lookup == NULL ||
3154 match_isinlist(hostname, CUSS &dns_ipv4_lookup, 0, NULL, NULL,
3155 MCL_DOMAIN, TRUE, NULL) != OK))
3164 #if HAVE_GETIPNODEBYNAME
3166 hostdata = getipnodebyname(CS hostname, af, 0, &error_num);
3168 hostdata = gethostbyname2(CS hostname, af);
3171 hostdata = gethostbyname(CS hostname);
3174 if (hostdata != NULL)
3176 hostname = US hostdata->h_name;
3180 if (af == AF_INET) break;
3185 primary_hostname = string_copy(hostname);
3188 /* Set up default value for smtp_active_hostname */
3190 smtp_active_hostname = primary_hostname;
3192 /* If spool_directory wasn't set in the build-time configuration, it must have
3193 got set above. Of course, writing to the log may not work if log_file_path is
3194 not set, but it will at least get to syslog or somewhere, with any luck. */
3196 if (*spool_directory == 0)
3197 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "spool_directory undefined: cannot "
3200 /* Expand the spool directory name; it may, for example, contain the primary
3201 host name. Same comment about failure. */
3203 s = expand_string(spool_directory);
3205 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "failed to expand spool_directory "
3206 "\"%s\": %s", spool_directory, expand_string_message);
3207 spool_directory = s;
3209 /* Expand log_file_path, which must contain "%s" in any component that isn't
3210 the null string or "syslog". It is also allowed to contain one instance of %D
3211 or %M. However, it must NOT contain % followed by anything else. */
3213 if (*log_file_path != 0)
3215 const uschar *ss, *sss;
3216 int sep = ':'; /* Fixed for log file path */
3217 s = expand_string(log_file_path);
3219 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "failed to expand log_file_path "
3220 "\"%s\": %s", log_file_path, expand_string_message);
3223 while ((sss = string_nextinlist(&ss,&sep,big_buffer,big_buffer_size)) != NULL)
3226 if (sss[0] == 0 || Ustrcmp(sss, "syslog") == 0) continue;
3227 t = Ustrstr(sss, "%s");
3229 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "log_file_path \"%s\" does not "
3230 "contain \"%%s\"", sss);
3232 t = Ustrchr(sss, '%');
3235 if ((t[1] != 'D' && t[1] != 'M') || Ustrchr(t+2, '%') != NULL)
3236 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "log_file_path \"%s\" contains "
3237 "unexpected \"%%\" character", s);
3244 /* Interpret syslog_facility into an integer argument for 'ident' param to
3245 openlog(). Default is LOG_MAIL set in globals.c. Allow the user to omit the
3248 if (syslog_facility_str != NULL)
3251 uschar *s = syslog_facility_str;
3253 if ((Ustrlen(syslog_facility_str) >= 4) &&
3254 (strncmpic(syslog_facility_str, US"log_", 4) == 0))
3257 for (i = 0; i < syslog_list_size; i++)
3259 if (strcmpic(s, syslog_list[i].name) == 0)
3261 syslog_facility = syslog_list[i].value;
3266 if (i >= syslog_list_size)
3268 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
3269 "failed to interpret syslog_facility \"%s\"", syslog_facility_str);
3273 /* Expand pid_file_path */
3275 if (*pid_file_path != 0)
3277 s = expand_string(pid_file_path);
3279 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "failed to expand pid_file_path "
3280 "\"%s\": %s", pid_file_path, expand_string_message);
3284 /* Set default value of process_log_path */
3286 if (process_log_path == NULL || *process_log_path =='\0')
3287 process_log_path = string_sprintf("%s/exim-process.info", spool_directory);
3289 /* Compile the regex for matching a UUCP-style "From_" line in an incoming
3292 regex_From = regex_must_compile(uucp_from_pattern, FALSE, TRUE);
3294 /* Unpick the SMTP rate limiting options, if set */
3296 if (smtp_ratelimit_mail != NULL)
3298 unpick_ratelimit(smtp_ratelimit_mail, &smtp_rlm_threshold,
3299 &smtp_rlm_base, &smtp_rlm_factor, &smtp_rlm_limit);
3302 if (smtp_ratelimit_rcpt != NULL)
3304 unpick_ratelimit(smtp_ratelimit_rcpt, &smtp_rlr_threshold,
3305 &smtp_rlr_base, &smtp_rlr_factor, &smtp_rlr_limit);
3308 /* The qualify domains default to the primary host name */
3310 if (qualify_domain_sender == NULL)
3311 qualify_domain_sender = primary_hostname;
3312 if (qualify_domain_recipient == NULL)
3313 qualify_domain_recipient = qualify_domain_sender;
3315 /* Setting system_filter_user in the configuration sets the gid as well if a
3316 name is given, but a numerical value does not. */
3318 if (system_filter_uid_set && !system_filter_gid_set)
3320 struct passwd *pw = getpwuid(system_filter_uid);
3322 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "Failed to look up uid %ld",
3323 (long int)system_filter_uid);
3324 system_filter_gid = pw->pw_gid;
3325 system_filter_gid_set = TRUE;
3328 /* If the errors_reply_to field is set, check that it is syntactically valid
3329 and ensure it contains a domain. */
3331 if (errors_reply_to != NULL)
3334 int start, end, domain;
3335 uschar *recipient = parse_extract_address(errors_reply_to, &errmess,
3336 &start, &end, &domain, FALSE);
3338 if (recipient == NULL)
3339 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
3340 "error in errors_reply_to (%s): %s", errors_reply_to, errmess);
3343 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
3344 "errors_reply_to (%s) does not contain a domain", errors_reply_to);
3347 /* If smtp_accept_queue or smtp_accept_max_per_host is set, then
3348 smtp_accept_max must also be set. */
3350 if (smtp_accept_max == 0 &&
3351 (smtp_accept_queue > 0 || smtp_accept_max_per_host != NULL))
3352 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
3353 "smtp_accept_max must be set if smtp_accept_queue or "
3354 "smtp_accept_max_per_host is set");
3356 /* Set up the host number if anything is specified. It is an expanded string
3357 so that it can be computed from the host name, for example. We do this last
3358 so as to ensure that everything else is set up before the expansion. */
3360 if (host_number_string != NULL)
3364 uschar *s = expand_string(host_number_string);
3366 log_write(0, LOG_MAIN|LOG_PANIC_DIE,
3367 "failed to expand localhost_number \"%s\": %s",
3368 host_number_string, expand_string_message);
3369 n = Ustrtol(s, &end, 0);
3370 while (isspace(*end)) end++;
3372 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
3373 "localhost_number value is not a number: %s", s);
3374 if (n > LOCALHOST_MAX)
3375 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
3376 "localhost_number is greater than the maximum allowed value (%d)",
3382 /* If tls_verify_hosts is set, tls_verify_certificates must also be set */
3384 if ((tls_verify_hosts != NULL || tls_try_verify_hosts != NULL) &&
3385 tls_verify_certificates == NULL)
3386 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
3387 "tls_%sverify_hosts is set, but tls_verify_certificates is not set",
3388 (tls_verify_hosts != NULL)? "" : "try_");
3390 /* This also checks that the library linkage is working and we can call
3391 routines in it, so call even if tls_require_ciphers is unset */
3392 if (!tls_dropprivs_validate_require_cipher())
3395 /* Magic number: at time of writing, 1024 has been the long-standing value
3396 used by so many clients, and what Exim used to use always, that it makes
3397 sense to just min-clamp this max-clamp at that. */
3398 if (tls_dh_max_bits < 1024)
3399 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
3400 "tls_dh_max_bits is too small, must be at least 1024 for interop");
3402 /* If openssl_options is set, validate it */
3403 if (openssl_options != NULL)
3406 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
3407 "openssl_options is set but we're using GnuTLS");
3410 if (!(tls_openssl_options_parse(openssl_options, &dummy)))
3411 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
3412 "openssl_options parse error: %s", openssl_options);
3416 if (gnutls_require_kx || gnutls_require_mac || gnutls_require_proto)
3417 log_write(0, LOG_MAIN, "WARNING: main options"
3418 " gnutls_require_kx, gnutls_require_mac and gnutls_require_protocols"
3420 #endif /*SUPPORT_TLS*/
3425 /*************************************************
3426 * Initialize one driver *
3427 *************************************************/
3429 /* This is called once the driver's generic options, if any, have been read.
3430 We can now find the driver, set up defaults for the private options, and
3431 unset any "set" bits in the private options table (which might have been
3432 set by another incarnation of the same driver).
3435 d pointer to driver instance block, with generic
3437 drivers_available vector of available drivers
3438 size_of_info size of each block in drivers_available
3439 class class of driver, for error message
3441 Returns: pointer to the driver info block
3444 static driver_info *
3445 init_driver(driver_instance *d, driver_info *drivers_available,
3446 int size_of_info, uschar *class)
3450 for (dd = drivers_available; dd->driver_name[0] != 0;
3451 dd = (driver_info *)(((uschar *)dd) + size_of_info))
3453 if (Ustrcmp(d->driver_name, dd->driver_name) == 0)
3456 int len = dd->options_len;
3458 d->options_block = store_get(len);
3459 memcpy(d->options_block, dd->options_block, len);
3460 for (i = 0; i < *(dd->options_count); i++)
3461 dd->options[i].type &= ~opt_set;
3466 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
3467 "%s %s: cannot find %s driver \"%s\"", class, d->name, class, d->driver_name);
3469 return NULL; /* never obeyed */
3475 /*************************************************
3476 * Initialize driver list *
3477 *************************************************/
3479 /* This function is called for routers, transports, and authentication
3480 mechanisms. It reads the data from the current point in the configuration file
3481 up to the end of the section, and sets up a chain of instance blocks according
3482 to the file's contents. The file will already have been opened by a call to
3483 readconf_main, and must be left open for subsequent reading of further data.
3485 Any errors cause a panic crash. Note that the blocks with names driver_info and
3486 driver_instance must map the first portions of all the _info and _instance
3487 blocks for this shared code to work.
3490 class "router", "transport", or "authenticator"
3491 anchor &routers, &transports, &auths
3492 drivers_available available drivers
3493 size_of_info size of each info block
3494 instance_default points to default data for an instance
3495 instance_size size of instance block
3496 driver_optionlist generic option list
3497 driver_optionlist_count count of generic option list
3503 readconf_driver_init(
3505 driver_instance **anchor,
3506 driver_info *drivers_available,
3508 void *instance_default,
3510 optionlist *driver_optionlist,
3511 int driver_optionlist_count)
3513 driver_instance **p = anchor;
3514 driver_instance *d = NULL;
3517 while ((buffer = get_config_line()) != NULL)
3522 /* Read the first name on the line and test for the start of a new driver. A
3523 macro definition indicates the end of the previous driver. If this isn't the
3524 start of a new driver, the line will be re-read. */
3526 s = readconf_readname(name, sizeof(name), buffer);
3528 /* Handle macro definition, first finishing off the initialization of the
3529 previous driver, if any. */
3531 if (isupper(*name) && *s == '=')
3535 if (d->driver_name == NULL)
3536 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
3537 "no driver defined for %s \"%s\"", class, d->name);
3541 read_macro_assignment(buffer);
3545 /* If the line starts with a name terminated by a colon, we are at the
3546 start of the definition of a new driver. The rest of the line must be
3553 /* Finish off initializing the previous driver. */
3557 if (d->driver_name == NULL)
3558 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
3559 "no driver defined for %s \"%s\"", class, d->name);
3563 /* Check that we haven't already got a driver of this name */
3565 for (d = *anchor; d != NULL; d = d->next)
3566 if (Ustrcmp(name, d->name) == 0)
3567 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
3568 "there are two %ss called \"%s\"", class, name);
3570 /* Set up a new driver instance data block on the chain, with
3571 its default values installed. */
3573 d = store_get(instance_size);
3574 memcpy(d, instance_default, instance_size);
3577 d->name = string_copy(name);
3579 /* Clear out the "set" bits in the generic options */
3581 for (i = 0; i < driver_optionlist_count; i++)
3582 driver_optionlist[i].type &= ~opt_set;
3584 /* Check nothing more on this line, then do the next loop iteration. */
3586 while (isspace(*s)) s++;
3587 if (*s != 0) extra_chars_error(s, US"driver name ", name, US"");
3591 /* Not the start of a new driver. Give an error if we have not set up a
3592 current driver yet. */
3594 if (d == NULL) log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
3595 "%s name missing", class);
3597 /* First look to see if this is a generic option; if it is "driver",
3598 initialize the driver. If is it not a generic option, we can look for a
3599 private option provided that the driver has been previously set up. */
3601 if (readconf_handle_option(buffer, driver_optionlist,
3602 driver_optionlist_count, d, NULL))
3604 if (d->info == NULL && d->driver_name != NULL)
3605 init_driver(d, drivers_available, size_of_info, class);
3608 /* Handle private options - pass the generic block because some may
3609 live therein. A flag with each option indicates if it is in the public
3612 else if (d->info != NULL)
3614 readconf_handle_option(buffer, d->info->options,
3615 *(d->info->options_count), d, US"option \"%s\" unknown");
3618 /* The option is not generic and the driver name has not yet been given. */
3620 else log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "option \"%s\" unknown "
3621 "(\"driver\" must be specified before any private options)", name);
3624 /* Run the initialization function for the final driver. */
3628 if (d->driver_name == NULL)
3629 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
3630 "no driver defined for %s \"%s\"", class, d->name);
3637 /*************************************************
3638 * Check driver dependency *
3639 *************************************************/
3641 /* This function is passed a driver instance and a string. It checks whether
3642 any of the string options for the driver contains the given string as an
3646 d points to a driver instance block
3647 s the string to search for
3649 Returns: TRUE if a dependency is found
3653 readconf_depends(driver_instance *d, uschar *s)
3655 int count = *(d->info->options_count);
3659 for (ol = d->info->options; ol < d->info->options + count; ol++)
3661 void *options_block;
3663 int type = ol->type & opt_mask;
3664 if (type != opt_stringptr) continue;
3665 options_block = ((ol->type & opt_public) == 0)? d->options_block : (void *)d;
3666 value = *(uschar **)((uschar *)options_block + (long int)(ol->value));
3667 if (value != NULL && (ss = Ustrstr(value, s)) != NULL)
3669 if (ss <= value || (ss[-1] != '$' && ss[-1] != '{') ||
3670 isalnum(ss[Ustrlen(s)])) continue;
3671 DEBUG(D_transport) debug_printf("driver %s: \"%s\" option depends on %s\n",
3672 d->name, ol->name, s);
3677 DEBUG(D_transport) debug_printf("driver %s does not depend on %s\n", d->name, s);
3684 /*************************************************
3685 * Decode an error type for retries *
3686 *************************************************/
3688 /* This function is global because it is also called from the main
3689 program when testing retry information. It decodes strings such as "quota_7d"
3690 into numerical error codes.
3693 pp points to start of text
3694 p points past end of text
3695 basic_errno points to an int to receive the main error number
3696 more_errno points to an int to receive the secondary error data
3698 Returns: NULL if decoded correctly; else points to error text
3702 readconf_retry_error(const uschar *pp, const uschar *p,
3703 int *basic_errno, int *more_errno)
3706 const uschar *q = pp;
3707 while (q < p && *q != '_') q++;
3710 if (len == 5 && strncmpic(pp, US"quota", len) == 0)
3712 *basic_errno = ERRNO_EXIMQUOTA;
3713 if (q != p && (*more_errno = readconf_readtime(q+1, *p, FALSE)) < 0)
3714 return US"bad time value";
3717 else if (len == 7 && strncmpic(pp, US"refused", len) == 0)
3719 *basic_errno = ECONNREFUSED;
3722 if (strncmpic(q+1, US"MX", p-q-1) == 0) *more_errno = 'M';
3723 else if (strncmpic(q+1, US"A", p-q-1) == 0) *more_errno = 'A';
3724 else return US"A or MX expected after \"refused\"";
3728 else if (len == 7 && strncmpic(pp, US"timeout", len) == 0)
3730 *basic_errno = ETIMEDOUT;
3734 int xlen = p - q - 1;
3735 const uschar *x = q + 1;
3737 static uschar *extras[] =
3738 { US"A", US"MX", US"connect", US"connect_A", US"connect_MX" };
3739 static int values[] =
3740 { 'A', 'M', RTEF_CTOUT, RTEF_CTOUT|'A', RTEF_CTOUT|'M' };
3742 for (i = 0; i < sizeof(extras)/sizeof(uschar *); i++)
3743 if (strncmpic(x, extras[i], xlen) == 0)
3745 *more_errno = values[i];
3749 if (i >= sizeof(extras)/sizeof(uschar *))
3750 if (strncmpic(x, US"DNS", xlen) == 0)
3751 log_write(0, LOG_MAIN|LOG_PANIC, "\"timeout_dns\" is no longer "
3752 "available in retry rules (it has never worked) - treated as "
3755 return US"\"A\", \"MX\", or \"connect\" expected after \"timeout\"";
3759 else if (strncmpic(pp, US"mail_4", 6) == 0 ||
3760 strncmpic(pp, US"rcpt_4", 6) == 0 ||
3761 strncmpic(pp, US"data_4", 6) == 0)
3764 int x = 255; /* means "any 4xx code" */
3765 if (p != pp + 8) bad = TRUE; else
3767 int a = pp[6], b = pp[7];
3771 if (isdigit(b)) x += b - '0';
3772 else if (b == 'x') x += 100;
3775 else if (a != 'x' || b != 'x') bad = TRUE;
3779 return string_sprintf("%.4s_4 must be followed by xx, dx, or dd, where "
3780 "x is literal and d is any digit", pp);
3782 *basic_errno = *pp == 'm' ? ERRNO_MAIL4XX :
3783 *pp == 'r' ? ERRNO_RCPT4XX : ERRNO_DATA4XX;
3784 *more_errno = x << 8;
3787 else if (len == 4 && strncmpic(pp, US"auth", len) == 0 &&
3788 strncmpic(q+1, US"failed", p-q-1) == 0)
3789 *basic_errno = ERRNO_AUTHFAIL;
3791 else if (strncmpic(pp, US"lost_connection", p - pp) == 0)
3792 *basic_errno = ERRNO_SMTPCLOSED;
3794 else if (strncmpic(pp, US"tls_required", p - pp) == 0)
3795 *basic_errno = ERRNO_TLSREQUIRED;
3797 else if (strncmpic(pp, US"lookup", p - pp) == 0)
3798 *basic_errno = ERRNO_UNKNOWNHOST;
3800 else if (len != 1 || Ustrncmp(pp, "*", 1) != 0)
3801 return string_sprintf("unknown or malformed retry error \"%.*s\"", (int) (p-pp), pp);
3809 /*************************************************
3810 * Read retry information *
3811 *************************************************/
3813 /* Each line of retry information contains:
3815 . A domain name pattern or an address pattern;
3817 . An error name, possibly with additional data, or *;
3819 . An optional sequence of retry items, each consisting of an identifying
3820 letter, a cutoff time, and optional parameters.
3822 All this is decoded and placed into a control block. */
3825 /* Subroutine to read an argument, preceded by a comma and terminated
3826 by comma, semicolon, whitespace, or newline. The types are: 0 = time value,
3827 1 = fixed point number (returned *1000).
3830 paddr pointer to pointer to current character; updated
3831 type 0 => read a time; 1 => read a fixed point number
3833 Returns: time in seconds or fixed point number * 1000
3837 retry_arg(const uschar **paddr, int type)
3839 const uschar *p = *paddr;
3842 if (*p++ != ',') log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "comma expected");
3844 while (isspace(*p)) p++;
3846 while (isalnum(*p) || (type == 1 && *p == '.')) p++;
3848 if (*p != 0 && !isspace(*p) && *p != ',' && *p != ';')
3849 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "comma or semicolon expected");
3854 case 0: return readconf_readtime(pp, *p, FALSE);
3855 case 1: return readconf_readfixed(pp, *p);
3857 return 0; /* Keep picky compilers happy */
3860 /* The function proper */
3863 readconf_retries(void)
3865 retry_config **chain = &retries;
3869 while ((p = get_config_line()))
3871 retry_rule **rchain;
3875 next = store_get(sizeof(retry_config));
3878 chain = &(next->next);
3879 next->basic_errno = next->more_errno = 0;
3880 next->senders = NULL;
3882 rchain = &(next->rules);
3884 next->pattern = string_dequote(&p);
3885 while (isspace(*p)) p++;
3887 while (mac_isgraph(*p)) p++;
3888 if (p - pp <= 0) log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
3889 "missing error type in retry rule");
3891 /* Test error names for things we understand. */
3893 if ((error = readconf_retry_error(pp, p, &next->basic_errno,
3894 &next->more_errno)))
3895 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "%s", error);
3897 /* There may be an optional address list of senders to be used as another
3898 constraint on the rule. This was added later, so the syntax is a bit of a
3899 fudge. Anything that is not a retry rule starting "F," or "G," is treated as
3902 while (isspace(*p)) p++;
3903 if (Ustrncmp(p, "senders", 7) == 0)
3906 while (isspace(*p)) p++;
3907 if (*p++ != '=') log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
3908 "\"=\" expected after \"senders\" in retry rule");
3909 while (isspace(*p)) p++;
3910 next->senders = string_dequote(&p);
3913 /* Now the retry rules. Keep the maximum timeout encountered. */
3915 while (isspace(*p)) p++;
3919 retry_rule *rule = store_get(sizeof(retry_rule));
3921 rchain = &(rule->next);
3923 rule->rule = toupper(*p++);
3924 rule->timeout = retry_arg(&p, 0);
3925 if (rule->timeout > retry_maximum_timeout)
3926 retry_maximum_timeout = rule->timeout;
3930 case 'F': /* Fixed interval */
3931 rule->p1 = retry_arg(&p, 0);
3934 case 'G': /* Geometrically increasing intervals */
3935 case 'H': /* Ditto, but with randomness */
3936 rule->p1 = retry_arg(&p, 0);
3937 rule->p2 = retry_arg(&p, 1);
3941 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "unknown retry rule letter");
3945 if (rule->timeout <= 0 || rule->p1 <= 0 ||
3946 (rule->rule != 'F' && rule->p2 < 1000))
3947 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
3948 "bad parameters for retry rule");
3950 while (isspace(*p)) p++;
3954 while (isspace(*p)) p++;
3957 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "semicolon expected");
3964 /*************************************************
3965 * Initialize authenticators *
3966 *************************************************/
3968 /* Read the authenticators section of the configuration file.
3977 auth_instance *au, *bu;
3978 readconf_driver_init(US"authenticator",
3979 (driver_instance **)(&auths), /* chain anchor */
3980 (driver_info *)auths_available, /* available drivers */
3981 sizeof(auth_info), /* size of info block */
3982 &auth_defaults, /* default values for generic options */
3983 sizeof(auth_instance), /* size of instance block */
3984 optionlist_auths, /* generic options */
3985 optionlist_auths_size);
3987 for (au = auths; au != NULL; au = au->next)
3989 if (au->public_name == NULL)
3990 log_write(0, LOG_PANIC_DIE|LOG_CONFIG, "no public name specified for "
3991 "the %s authenticator", au->name);
3992 for (bu = au->next; bu != NULL; bu = bu->next)
3994 if (strcmpic(au->public_name, bu->public_name) == 0)
3996 if ((au->client && bu->client) || (au->server && bu->server))
3997 log_write(0, LOG_PANIC_DIE|LOG_CONFIG, "two %s authenticators "
3998 "(%s and %s) have the same public name (%s)",
3999 (au->client)? US"client" : US"server", au->name, bu->name,
4009 /*************************************************
4010 * Read ACL information *
4011 *************************************************/
4013 /* If this run of Exim is not doing something that involves receiving a
4014 message, we can just skip over the ACL information. No need to parse it.
4016 First, we have a function for acl_read() to call back to get the next line. We
4017 need to remember the line we passed, because at the end it will contain the
4018 name of the next ACL. */
4020 static uschar *acl_line;
4025 acl_line = get_config_line();
4030 /* Now the main function:
4041 /* Read each ACL and add it into the tree. Macro (re)definitions are allowed
4044 acl_line = get_config_line();
4046 while(acl_line != NULL)
4052 p = readconf_readname(name, sizeof(name), acl_line);
4053 if (isupper(*name) && *p == '=')
4055 read_macro_assignment(acl_line);
4056 acl_line = get_config_line();
4060 if (*p != ':' || name[0] == 0)
4061 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "missing or malformed ACL name");
4063 node = store_get(sizeof(tree_node) + Ustrlen(name));
4064 Ustrcpy(node->name, name);
4065 if (!tree_insertnode(&acl_anchor, node))
4066 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
4067 "there are two ACLs called \"%s\"", name);
4069 node->data.ptr = acl_read(acl_callback, &error);
4071 if (node->data.ptr == NULL && error != NULL)
4072 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "error in ACL: %s", error);
4078 /*************************************************
4079 * Read configuration for local_scan() *
4080 *************************************************/
4082 /* This function is called after "begin local_scan" is encountered in the
4083 configuration file. If the local_scan() function allows for configuration
4084 options, we can process them. Otherwise, we expire in a panic.
4091 local_scan_init(void)
4093 #ifndef LOCAL_SCAN_HAS_OPTIONS
4094 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "local_scan() options not supported: "
4095 "(LOCAL_SCAN_HAS_OPTIONS not defined in Local/Makefile)");
4099 while ((p = get_config_line()) != NULL)
4101 (void) readconf_handle_option(p, local_scan_options, local_scan_options_count,
4102 NULL, US"local_scan option \"%s\" unknown");
4109 /*************************************************
4110 * Read rest of configuration (after main) *
4111 *************************************************/
4113 /* This function reads the rest of the runtime configuration, after the main
4114 configuration. It is called only when actually needed. Each subsequent section
4115 of the configuration starts with a line of the form
4119 where the name is "routers", "transports", etc. A section is terminated by
4120 hitting the next "begin" line, and the next name is left in next_section.
4121 Because it may confuse people as to whether the names are singular or plural,
4122 we add "s" if it's missing. There is always enough room in next_section for
4123 this. This function is basically just a switch.
4129 static uschar *section_list[] = {
4143 while(next_section[0] != 0)
4147 int last = sizeof(section_list) / sizeof(uschar *);
4149 int n = Ustrlen(next_section);
4151 if (tolower(next_section[n-1]) != 's') Ustrcpy(next_section+n, "s");
4155 int c = strcmpic(next_section, section_list[mid]);
4157 if (c > 0) first = mid + 1; else last = mid;
4159 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
4160 "\"%.*s\" is not a known configuration section name", n, next_section);
4161 mid = (last + first)/2;
4165 if (((had ^= bit) & bit) == 0)
4166 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
4167 "\"%.*s\" section is repeated in the configuration file", n,
4172 case 0: readconf_acl(); break;
4173 case 1: auths_init(); break;
4174 case 2: local_scan_init(); break;
4175 case 3: readconf_retries(); break;
4176 case 4: readconf_rewrites(); break;
4177 case 5: route_init(); break;
4178 case 6: transport_init(); break;
4182 (void)fclose(config_file);
4187 /* End of readconf.c */