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 { "slow_lookup_log", opt_int, &slow_lookup_log },
377 { "smtp_accept_keepalive", opt_bool, &smtp_accept_keepalive },
378 { "smtp_accept_max", opt_int, &smtp_accept_max },
379 { "smtp_accept_max_nonmail", opt_int, &smtp_accept_max_nonmail },
380 { "smtp_accept_max_nonmail_hosts", opt_stringptr, &smtp_accept_max_nonmail_hosts },
381 { "smtp_accept_max_per_connection", opt_int, &smtp_accept_max_per_connection },
382 { "smtp_accept_max_per_host", opt_stringptr, &smtp_accept_max_per_host },
383 { "smtp_accept_queue", opt_int, &smtp_accept_queue },
384 { "smtp_accept_queue_per_connection", opt_int, &smtp_accept_queue_per_connection },
385 { "smtp_accept_reserve", opt_int, &smtp_accept_reserve },
386 { "smtp_active_hostname", opt_stringptr, &raw_active_hostname },
387 { "smtp_banner", opt_stringptr, &smtp_banner },
388 { "smtp_check_spool_space", opt_bool, &smtp_check_spool_space },
389 { "smtp_connect_backlog", opt_int, &smtp_connect_backlog },
390 { "smtp_enforce_sync", opt_bool, &smtp_enforce_sync },
391 { "smtp_etrn_command", opt_stringptr, &smtp_etrn_command },
392 { "smtp_etrn_serialize", opt_bool, &smtp_etrn_serialize },
393 { "smtp_load_reserve", opt_fixed, &smtp_load_reserve },
394 { "smtp_max_synprot_errors", opt_int, &smtp_max_synprot_errors },
395 { "smtp_max_unknown_commands",opt_int, &smtp_max_unknown_commands },
396 { "smtp_ratelimit_hosts", opt_stringptr, &smtp_ratelimit_hosts },
397 { "smtp_ratelimit_mail", opt_stringptr, &smtp_ratelimit_mail },
398 { "smtp_ratelimit_rcpt", opt_stringptr, &smtp_ratelimit_rcpt },
399 { "smtp_receive_timeout", opt_func, &fn_smtp_receive_timeout },
400 { "smtp_reserve_hosts", opt_stringptr, &smtp_reserve_hosts },
401 { "smtp_return_error_details",opt_bool, &smtp_return_error_details },
402 #ifdef EXPERIMENTAL_INTERNATIONAL
403 { "smtputf8_advertise_hosts", opt_stringptr, &smtputf8_advertise_hosts },
405 #ifdef WITH_CONTENT_SCAN
406 { "spamd_address", opt_stringptr, &spamd_address },
408 #ifdef EXPERIMENTAL_SPF
409 { "spf_guess", opt_stringptr, &spf_guess },
411 { "split_spool_directory", opt_bool, &split_spool_directory },
412 { "spool_directory", opt_stringptr, &spool_directory },
414 { "sqlite_lock_timeout", opt_int, &sqlite_lock_timeout },
416 #ifdef EXPERIMENTAL_SRS
417 { "srs_config", opt_stringptr, &srs_config },
418 { "srs_hashlength", opt_int, &srs_hashlength },
419 { "srs_hashmin", opt_int, &srs_hashmin },
420 { "srs_maxage", opt_int, &srs_maxage },
421 { "srs_secrets", opt_stringptr, &srs_secrets },
422 { "srs_usehash", opt_bool, &srs_usehash },
423 { "srs_usetimestamp", opt_bool, &srs_usetimestamp },
425 { "strict_acl_vars", opt_bool, &strict_acl_vars },
426 { "strip_excess_angle_brackets", opt_bool, &strip_excess_angle_brackets },
427 { "strip_trailing_dot", opt_bool, &strip_trailing_dot },
428 { "syslog_duplication", opt_bool, &syslog_duplication },
429 { "syslog_facility", opt_stringptr, &syslog_facility_str },
430 { "syslog_processname", opt_stringptr, &syslog_processname },
431 { "syslog_timestamp", opt_bool, &syslog_timestamp },
432 { "system_filter", opt_stringptr, &system_filter },
433 { "system_filter_directory_transport", opt_stringptr,&system_filter_directory_transport },
434 { "system_filter_file_transport",opt_stringptr,&system_filter_file_transport },
435 { "system_filter_group", opt_gid, &system_filter_gid },
436 { "system_filter_pipe_transport",opt_stringptr,&system_filter_pipe_transport },
437 { "system_filter_reply_transport",opt_stringptr,&system_filter_reply_transport },
438 { "system_filter_user", opt_uid, &system_filter_uid },
439 { "tcp_nodelay", opt_bool, &tcp_nodelay },
440 #ifdef USE_TCP_WRAPPERS
441 { "tcp_wrappers_daemon_name", opt_stringptr, &tcp_wrappers_daemon_name },
443 { "timeout_frozen_after", opt_time, &timeout_frozen_after },
444 { "timezone", opt_stringptr, &timezone_string },
446 { "tls_advertise_hosts", opt_stringptr, &tls_advertise_hosts },
447 { "tls_certificate", opt_stringptr, &tls_certificate },
448 { "tls_crl", opt_stringptr, &tls_crl },
449 { "tls_dh_max_bits", opt_int, &tls_dh_max_bits },
450 { "tls_dhparam", opt_stringptr, &tls_dhparam },
451 # ifndef DISABLE_OCSP
452 { "tls_ocsp_file", opt_stringptr, &tls_ocsp_file },
454 { "tls_on_connect_ports", opt_stringptr, &tls_in.on_connect_ports },
455 { "tls_privatekey", opt_stringptr, &tls_privatekey },
456 { "tls_remember_esmtp", opt_bool, &tls_remember_esmtp },
457 { "tls_require_ciphers", opt_stringptr, &tls_require_ciphers },
458 { "tls_try_verify_hosts", opt_stringptr, &tls_try_verify_hosts },
459 { "tls_verify_certificates", opt_stringptr, &tls_verify_certificates },
460 { "tls_verify_hosts", opt_stringptr, &tls_verify_hosts },
462 { "trusted_groups", opt_gidlist, &trusted_groups },
463 { "trusted_users", opt_uidlist, &trusted_users },
464 { "unknown_login", opt_stringptr, &unknown_login },
465 { "unknown_username", opt_stringptr, &unknown_username },
466 { "untrusted_set_sender", opt_stringptr, &untrusted_set_sender },
467 { "uucp_from_pattern", opt_stringptr, &uucp_from_pattern },
468 { "uucp_from_sender", opt_stringptr, &uucp_from_sender },
469 { "warn_message_file", opt_stringptr, &warn_message_file },
470 { "write_rejectlog", opt_bool, &write_rejectlog }
473 static int optionlist_config_size =
474 sizeof(optionlist_config)/sizeof(optionlist);
478 /*************************************************
479 * Find the name of an option *
480 *************************************************/
482 /* This function is to aid debugging. Various functions take arguments that are
483 pointer variables in the options table or in option tables for various drivers.
484 For debugging output, it is useful to be able to find the name of the option
485 which is currently being processed. This function finds it, if it exists, by
486 searching the table(s).
488 Arguments: a value that is presumed to be in the table above
489 Returns: the option name, or an empty string
493 readconf_find_option(void *p)
497 transport_instance *t;
499 for (i = 0; i < optionlist_config_size; i++)
500 if (p == optionlist_config[i].value) return US optionlist_config[i].name;
502 for (r = routers; r != NULL; r = r->next)
504 router_info *ri = r->info;
505 for (i = 0; i < *ri->options_count; i++)
507 if ((ri->options[i].type & opt_mask) != opt_stringptr) continue;
508 if (p == (char *)(r->options_block) + (long int)(ri->options[i].value))
509 return US ri->options[i].name;
513 for (t = transports; t != NULL; t = t->next)
515 transport_info *ti = t->info;
516 for (i = 0; i < *ti->options_count; i++)
518 optionlist * op = &ti->options[i];
519 if ((op->type & opt_mask) != opt_stringptr) continue;
520 if (p == ( op->type & opt_public
522 : (char *)t->options_block
524 + (long int)op->value)
535 /*************************************************
536 * Deal with an assignment to a macro *
537 *************************************************/
539 /* This function is called when a line that starts with an upper case letter is
540 encountered. The argument "line" should contain a complete logical line, and
541 start with the first letter of the macro name. The macro name and the
542 replacement text are extracted and stored. Redefinition of existing,
543 non-command line, macros is permitted using '==' instead of '='.
546 s points to the start of the logical line
552 read_macro_assignment(uschar *s)
558 macro_item *mlast = NULL;
560 while (isalnum(*s) || *s == '_')
562 if (namelen >= sizeof(name) - 1)
563 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
564 "macro name too long (maximum is " SIZE_T_FMT " characters)", sizeof(name) - 1);
565 name[namelen++] = *s++;
569 while (isspace(*s)) s++;
571 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "malformed macro definition");
578 while (isspace(*s)) s++;
580 /* If an existing macro of the same name was defined on the command line, we
581 just skip this definition. It's an error to attempt to redefine a macro without
582 redef set to TRUE, or to redefine a macro when it hasn't been defined earlier.
583 It is also an error to define a macro whose name begins with the name of a
584 previously defined macro. Note: it is documented that the other way round
587 for (m = macros; m != NULL; m = m->next)
589 int len = Ustrlen(m->name);
591 if (Ustrcmp(m->name, name) == 0)
593 if (!m->command_line && !redef)
594 log_write(0, LOG_CONFIG|LOG_PANIC_DIE, "macro \"%s\" is already "
595 "defined (use \"==\" if you want to redefine it", name);
599 if (len < namelen && Ustrstr(name, m->name) != NULL)
600 log_write(0, LOG_CONFIG|LOG_PANIC_DIE, "\"%s\" cannot be defined as "
601 "a macro because previously defined macro \"%s\" is a substring",
604 /* We cannot have this test, because it is documented that a substring
605 macro is permitted (there is even an example).
607 * if (len > namelen && Ustrstr(m->name, name) != NULL)
608 * log_write(0, LOG_CONFIG|LOG_PANIC_DIE, "\"%s\" cannot be defined as "
609 * "a macro because it is a substring of previously defined macro \"%s\"",
616 /* Check for an overriding command-line definition. */
618 if (m != NULL && m->command_line) return;
620 /* Redefinition must refer to an existing macro. */
625 log_write(0, LOG_CONFIG|LOG_PANIC_DIE, "can't redefine an undefined macro "
629 /* We have a new definition. The macro_item structure includes a final vector
630 called "name" which is one byte long. Thus, adding "namelen" gives us enough
631 room to store the "name" string. */
635 m = store_get(sizeof(macro_item) + namelen);
636 if (macros == NULL) macros = m; else mlast->next = m;
637 Ustrncpy(m->name, name, namelen);
638 m->name[namelen] = 0;
640 m->command_line = FALSE;
643 /* Set the value of the new or redefined macro */
645 m->replacement = string_copy(s);
652 /*************************************************
653 * Read configuration line *
654 *************************************************/
656 /* A logical line of text is read from the configuration file into the big
657 buffer, taking account of macros, .includes, and continuations. The size of
658 big_buffer is increased if necessary. The count of configuration lines is
659 maintained. Physical input lines starting with # (ignoring leading white space,
660 and after macro replacement) and empty logical lines are always ignored.
661 Leading and trailing spaces are removed.
663 If we hit a line of the form "begin xxxx", the xxxx is placed in the
664 next_section vector, and the function returns NULL, indicating the end of a
665 configuration section. On end-of-file, NULL is returned with next_section
670 Returns: a pointer to the first non-blank in the line,
671 or NULL if eof or end of section is reached
675 get_config_line(void)
677 int startoffset = 0; /* To first non-blank char in logical line */
678 int len = 0; /* Of logical line so far */
684 /* Loop for handling continuation lines, skipping comments, and dealing with
689 if (Ufgets(big_buffer+len, big_buffer_size-len, config_file) == NULL)
691 if (config_file_stack != NULL) /* EOF inside .include */
693 (void)fclose(config_file);
694 config_file = config_file_stack->file;
695 config_filename = config_file_stack->filename;
696 config_lineno = config_file_stack->lineno;
697 config_file_stack = config_file_stack->next;
701 /* EOF at top level */
703 if (cstate_stack_ptr >= 0)
704 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
705 "Unexpected end of configuration file: .endif missing");
707 if (len != 0) break; /* EOF after continuation */
708 next_section[0] = 0; /* EOF at start of logical line */
713 newlen = len + Ustrlen(big_buffer + len);
715 /* Handle pathologically long physical lines - yes, it did happen - by
716 extending big_buffer at this point. The code also copes with very long
719 while (newlen == big_buffer_size - 1 && big_buffer[newlen - 1] != '\n')
722 big_buffer_size += BIG_BUFFER_SIZE;
723 newbuffer = store_malloc(big_buffer_size);
725 /* This use of strcpy is OK because we know that the string in the old
726 buffer is shorter than the new buffer. */
728 Ustrcpy(newbuffer, big_buffer);
729 store_free(big_buffer);
730 big_buffer = newbuffer;
731 if (Ufgets(big_buffer+newlen, big_buffer_size-newlen, config_file) == NULL)
733 newlen += Ustrlen(big_buffer + newlen);
736 /* Find the true start of the physical line - leading spaces are always
739 ss = big_buffer + len;
740 while (isspace(*ss)) ss++;
742 /* Process the physical line for macros. If this is the start of the logical
743 line, skip over initial text at the start of the line if it starts with an
744 upper case character followed by a sequence of name characters and an equals
745 sign, because that is the definition of a new macro, and we don't do
746 replacement therein. */
749 if (len == 0 && isupper(*s))
751 while (isalnum(*s) || *s == '_') s++;
752 while (isspace(*s)) s++;
753 if (*s != '=') s = ss; /* Not a macro definition */
756 /* For each defined macro, scan the line (from after XXX= if present),
757 replacing all occurrences of the macro. */
760 for (m = macros; m != NULL; m = m->next)
765 while ((p = Ustrstr(t, m->name)) != NULL)
768 int namelen = Ustrlen(m->name);
769 int replen = Ustrlen(m->replacement);
771 /* Expand the buffer if necessary */
773 while (newlen - namelen + replen + 1 > big_buffer_size)
775 int newsize = big_buffer_size + BIG_BUFFER_SIZE;
776 uschar *newbuffer = store_malloc(newsize);
777 memcpy(newbuffer, big_buffer, newlen + 1);
778 p = newbuffer + (p - big_buffer);
779 s = newbuffer + (s - big_buffer);
780 ss = newbuffer + (ss - big_buffer);
781 t = newbuffer + (t - big_buffer);
782 big_buffer_size = newsize;
783 store_free(big_buffer);
784 big_buffer = newbuffer;
787 /* Shuffle the remaining characters up or down in the buffer before
788 copying in the replacement text. Don't rescan the replacement for this
792 moveby = replen - namelen;
795 memmove(p + replen, pp, (big_buffer + newlen) - pp + 1);
798 Ustrncpy(p, m->replacement, replen);
804 /* An empty macro replacement at the start of a line could mean that ss no
805 longer points to the first non-blank character. */
807 while (isspace(*ss)) ss++;
809 /* Check for comment lines - these are physical lines. */
811 if (*ss == '#') continue;
813 /* Handle conditionals, which are also applied to physical lines. Conditions
814 are of the form ".ifdef ANYTEXT" and are treated as true if any macro
815 expansion occured on the rest of the line. A preliminary test for the leading
816 '.' saves effort on most lines. */
822 /* Search the list of conditional directives */
824 for (i = 0; i < cond_list_size; i++)
827 cond_item *c = cond_list+i;
828 if (Ustrncmp(ss+1, c->name, c->namelen) != 0) continue;
830 /* The following character must be white space or end of string */
832 n = ss[1 + c->namelen];
833 if (n != ' ' && n != 't' && n != '\n' && n != 0) break;
835 /* .ifdef and .ifndef push the current state onto the stack, then set
836 a new one from the table. Stack overflow is an error */
840 if (cstate_stack_ptr >= CSTATE_STACK_SIZE - 1)
841 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
842 ".%s nested too deeply", c->name);
843 cstate_stack[++cstate_stack_ptr] = cstate;
844 cstate = next_cstate[cstate][macro_found? c->action1 : c->action2];
847 /* For any of the others, stack underflow is an error. The next state
848 comes either from the stack (.endif) or from the table. */
852 if (cstate_stack_ptr < 0)
853 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
854 ".%s without matching .ifdef", c->name);
855 cstate = (c->pushpop < 0)? cstate_stack[cstate_stack_ptr--] :
856 next_cstate[cstate][macro_found? c->action1 : c->action2];
859 /* Having dealt with a directive, break the loop */
864 /* If we have handled a conditional directive, continue with the next
865 physical line. Otherwise, fall through. */
867 if (i < cond_list_size) continue;
870 /* If the conditional state is not 0 (actively using these lines), ignore
873 if (cstate != 0) continue; /* Conditional skip */
875 /* Handle .include lines - these are also physical lines. */
877 if (Ustrncmp(ss, ".include", 8) == 0 &&
879 (Ustrncmp(ss+8, "_if_exists", 10) == 0 && isspace(ss[18]))))
882 int include_if_exists = isspace(ss[8])? 0 : 10;
883 config_file_item *save;
886 ss += 9 + include_if_exists;
887 while (isspace(*ss)) ss++;
888 t = ss + Ustrlen(ss);
889 while (t > ss && isspace(t[-1])) t--;
890 if (*ss == '\"' && t[-1] == '\"')
898 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, ".include specifies a non-"
899 "absolute path \"%s\"", ss);
901 if (include_if_exists != 0 && (Ustat(ss, &statbuf) != 0)) continue;
903 save = store_get(sizeof(config_file_item));
904 save->next = config_file_stack;
905 config_file_stack = save;
906 save->file = config_file;
907 save->filename = config_filename;
908 save->lineno = config_lineno;
910 config_file = Ufopen(ss, "rb");
911 if (config_file == NULL)
912 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "failed to open included "
913 "configuration file %s", ss);
914 config_filename = string_copy(ss);
919 /* If this is the start of the logical line, remember where the non-blank
920 data starts. Otherwise shuffle down continuation lines to remove leading
924 startoffset = ss - big_buffer;
927 s = big_buffer + len;
930 memmove(s, ss, (newlen - len) - (ss - s) + 1);
935 /* Accept the new addition to the line. Remove trailing white space. */
938 while (len > 0 && isspace(big_buffer[len-1])) len--;
941 /* We are done if the line does not end in backslash and contains some data.
942 Empty logical lines are ignored. For continuations, remove the backslash and
943 go round the loop to read the continuation line. */
947 if (big_buffer[len-1] != '\\') break; /* End of logical line */
948 big_buffer[--len] = 0; /* Remove backslash */
950 } /* Loop for reading multiple physical lines */
952 /* We now have a logical line. Test for the end of a configuration section (or,
953 more accurately, for the start of the next section). Place the name of the next
954 section in next_section, and return NULL. If the name given is longer than
955 next_section, truncate it. It will be unrecognized later, because all the known
956 section names do fit. Leave space for pluralizing. */
958 s = big_buffer + startoffset; /* First non-space character */
959 if (strncmpic(s, US"begin ", 6) == 0)
962 while (isspace(*s)) s++;
963 if (big_buffer + len - s > sizeof(next_section) - 2)
964 s[sizeof(next_section) - 2] = 0;
965 Ustrcpy(next_section, s);
969 /* Return the first non-blank character. */
976 /*************************************************
978 *************************************************/
980 /* The yield is the pointer to the next uschar. Names longer than the
981 output space are silently truncated. This function is also used from acl.c when
985 name where to put the name
989 Returns: new input pointer
993 readconf_readname(uschar *name, int len, uschar *s)
996 while (isspace(*s)) s++;
999 while (isalnum(*s) || *s == '_')
1001 if (p < len-1) name[p++] = *s;
1006 while (isspace(*s)) s++;
1013 /*************************************************
1014 * Read a time value *
1015 *************************************************/
1017 /* This function is also called from outside, to read argument
1018 time values. The format of a time value is:
1020 [<n>w][<n>d][<n>h][<n>m][<n>s]
1022 as long as at least one is present. If a format error is encountered,
1023 return a negative value. The value must be terminated by the given
1028 terminator required terminating character
1029 return_msec if TRUE, allow fractional seconds and return milliseconds
1031 Returns: the time value, or -1 on syntax error
1032 value is seconds if return_msec is FALSE
1033 value is milliseconds if return_msec is TRUE
1037 readconf_readtime(const uschar *s, int terminator, BOOL return_msec)
1045 if (!isdigit(*s)) return -1;
1046 (void)sscanf(CCS s, "%d%n", &value, &count);
1051 case 'w': value *= 7;
1052 case 'd': value *= 24;
1053 case 'h': value *= 60;
1054 case 'm': value *= 60;
1059 if (!return_msec) return -1;
1060 (void)sscanf(CCS s, "%lf%n", &fraction, &count);
1062 if (*s++ != 's') return -1;
1063 yield += (int)(fraction * 1000.0);
1069 if (return_msec) value *= 1000;
1071 if (*s == terminator) return yield;
1073 /* Control never reaches here. */
1078 /*************************************************
1079 * Read a fixed point value *
1080 *************************************************/
1082 /* The value is returned *1000
1086 terminator required terminator
1088 Returns: the value, or -1 on error
1092 readconf_readfixed(const uschar *s, int terminator)
1096 if (!isdigit(*s)) return -1;
1097 (void)sscanf(CS s, "%d%n", &value, &count);
1099 yield = value * 1000;
1103 while (isdigit((*(++s))))
1105 yield += (*s - '0') * m;
1110 return (*s == terminator)? yield : (-1);
1115 /*************************************************
1116 * Find option in list *
1117 *************************************************/
1119 /* The lists are always in order, so binary chop can be used.
1122 name the option name to search for
1123 ol the first entry in the option list
1124 last one more than the offset of the last entry in the option list
1126 Returns: pointer to an option entry, or NULL if not found
1130 find_option(uschar *name, optionlist *ol, int last)
1133 while (last > first)
1135 int middle = (first + last)/2;
1136 int c = Ustrcmp(name, ol[middle].name);
1137 if (c == 0) return ol + middle;
1138 else if (c > 0) first = middle + 1;
1146 /*************************************************
1147 * Find a set flag in option list *
1148 *************************************************/
1150 /* Because some versions of Unix make no restrictions on the values of uids and
1151 gids (even negative ones), we cannot represent "unset" by a special value.
1152 There is therefore a separate boolean variable for each one indicating whether
1153 a value is set or not. This function returns a pointer to the boolean, given
1154 the original option name. It is a major disaster if the flag cannot be found.
1157 name the name of the uid or gid option
1158 oltop points to the start of the relevant option list
1159 last one more than the offset of the last item in the option list
1160 data_block NULL when reading main options => data values in the option
1161 list are absolute addresses; otherwise they are byte offsets
1162 in data_block (used for driver options)
1164 Returns: a pointer to the boolean flag.
1168 get_set_flag(uschar *name, optionlist *oltop, int last, void *data_block)
1172 sprintf(CS name2, "*set_%.50s", name);
1173 ol = find_option(name2, oltop, last);
1174 if (ol == NULL) log_write(0, LOG_MAIN|LOG_PANIC_DIE,
1175 "Exim internal error: missing set flag for %s", name);
1176 return (data_block == NULL)? (BOOL *)(ol->value) :
1177 (BOOL *)((uschar *)data_block + (long int)(ol->value));
1183 /*************************************************
1184 * Output extra characters message and die *
1185 *************************************************/
1187 /* Called when an option line has junk on the end. Sometimes this is because
1188 the sysadmin thinks comments are permitted.
1191 s points to the extra characters
1192 t1..t3 strings to insert in the log message
1194 Returns: doesn't return; dies
1198 extra_chars_error(const uschar *s, const uschar *t1, const uschar *t2, const uschar *t3)
1200 uschar *comment = US"";
1201 if (*s == '#') comment = US" (# is comment only at line start)";
1202 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1203 "extra characters follow %s%s%s%s", t1, t2, t3, comment);
1208 /*************************************************
1209 * Read rewrite information *
1210 *************************************************/
1212 /* Each line of rewrite information contains:
1214 . A complete address in the form user@domain, possibly with
1215 leading * for each part; or alternatively, a regex.
1217 . A replacement string (which will be expanded).
1219 . An optional sequence of one-letter flags, indicating which
1220 headers etc. to apply this rule to.
1222 All this is decoded and placed into a control block. The OR of the flags is
1223 maintained in a common word.
1226 p points to the string that makes up the rule
1227 existflags points to the overall flag word
1228 isglobal TRUE if reading global rewrite rules
1230 Returns: the control block for the parsed rule.
1233 static rewrite_rule *
1234 readconf_one_rewrite(const uschar *p, int *existflags, BOOL isglobal)
1236 rewrite_rule *next = store_get(sizeof(rewrite_rule));
1239 next->key = string_dequote(&p);
1241 while (isspace(*p)) p++;
1243 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1244 "missing rewrite replacement string");
1247 next->replacement = string_dequote(&p);
1249 while (*p != 0) switch (*p++)
1251 case ' ': case '\t': break;
1253 case 'q': next->flags |= rewrite_quit; break;
1254 case 'w': next->flags |= rewrite_whole; break;
1256 case 'h': next->flags |= rewrite_all_headers; break;
1257 case 's': next->flags |= rewrite_sender; break;
1258 case 'f': next->flags |= rewrite_from; break;
1259 case 't': next->flags |= rewrite_to; break;
1260 case 'c': next->flags |= rewrite_cc; break;
1261 case 'b': next->flags |= rewrite_bcc; break;
1262 case 'r': next->flags |= rewrite_replyto; break;
1264 case 'E': next->flags |= rewrite_all_envelope; break;
1265 case 'F': next->flags |= rewrite_envfrom; break;
1266 case 'T': next->flags |= rewrite_envto; break;
1268 case 'Q': next->flags |= rewrite_qualify; break;
1269 case 'R': next->flags |= rewrite_repeat; break;
1272 next->flags |= rewrite_smtp;
1273 if (next->key[0] != '^' && Ustrncmp(next->key, "\\N^", 3) != 0)
1274 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1275 "rewrite rule has the S flag but is not a regular expression");
1279 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1280 "unknown rewrite flag character '%c' "
1281 "(could be missing quotes round replacement item)", p[-1]);
1285 /* If no action flags are set, set all the "normal" rewrites. */
1287 if ((next->flags & (rewrite_all | rewrite_smtp)) == 0)
1288 next->flags |= isglobal? rewrite_all : rewrite_all_headers;
1290 /* Remember which exist, for optimization, and return the rule */
1292 *existflags |= next->flags;
1299 /*************************************************
1300 * Read global rewrite information *
1301 *************************************************/
1303 /* Each line is a single rewrite rule; it is parsed into a control block
1304 by readconf_one_rewrite(), and its flags are ORed into the global flag
1305 word rewrite_existflags. */
1308 readconf_rewrites(void)
1310 rewrite_rule **chain = &global_rewrite_rules;
1313 while ((p = get_config_line()) != NULL)
1315 rewrite_rule *next = readconf_one_rewrite(p, &rewrite_existflags, TRUE);
1317 chain = &(next->next);
1323 /*************************************************
1325 *************************************************/
1327 /* Strings are read into the normal store pool. As long we aren't too
1328 near the end of the current block, the string will just use what is necessary
1329 on the top of the stacking pool, because string_cat() uses the extension
1333 s the rest of the input line
1334 name the option name (for errors)
1336 Returns: pointer to the string
1340 read_string(const uschar *s, const uschar *name)
1345 if (*s != '\"') return string_copy(s);
1348 yield = string_dequote(&s);
1350 if (s == ss+1 || s[-1] != '\"')
1351 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1352 "missing quote at end of string value for %s", name);
1354 if (*s != 0) extra_chars_error(s, US"string value for ", name, US"");
1360 /*************************************************
1361 * Custom-handler options *
1362 *************************************************/
1364 fn_smtp_receive_timeout(const uschar * name, const uschar * str)
1367 smtp_receive_timeout_s = string_copy(str);
1370 /* "smtp_receive_timeout", opt_time, &smtp_receive_timeout */
1371 smtp_receive_timeout = readconf_readtime(str, 0, FALSE);
1372 if (smtp_receive_timeout < 0)
1373 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "invalid time value for %s",
1378 /*************************************************
1379 * Handle option line *
1380 *************************************************/
1382 /* This function is called from several places to process a line containing the
1383 setting of an option. The first argument is the line to be decoded; it has been
1384 checked not to be empty and not to start with '#'. Trailing newlines and white
1385 space have been removed. The second argument is a pointer to the list of
1386 variable names that are to be recognized, together with their types and
1387 locations, and the third argument gives the number of entries in the list.
1389 The fourth argument is a pointer to a data block. If it is NULL, then the data
1390 values in the options list are absolute addresses. Otherwise, they are byte
1391 offsets in the data block.
1393 String option data may continue onto several lines; this function reads further
1394 data from config_file if necessary.
1396 The yield of this function is normally zero. If a string continues onto
1397 multiple lines, then the data value is permitted to be followed by a comma
1398 or a semicolon (for use in drivers) and the yield is that character.
1401 buffer contains the configuration line to be handled
1402 oltop points to the start of the relevant option list
1403 last one more than the offset of the last item in the option list
1404 data_block NULL when reading main options => data values in the option
1405 list are absolute addresses; otherwise they are byte offsets
1406 in data_block when they have opt_public set; otherwise
1407 they are byte offsets in data_block->options_block.
1408 unknown_txt format string to use in panic message for unknown option;
1409 must contain %s for option name
1410 if given as NULL, don't panic on unknown option
1412 Returns: TRUE if an option was read successfully,
1413 FALSE false for an unknown option if unknown_txt == NULL,
1414 otherwise panic and die on an unknown option
1418 readconf_handle_option(uschar *buffer, optionlist *oltop, int last,
1419 void *data_block, uschar *unknown_txt)
1423 int n, count, type, value;
1427 BOOL boolvalue = TRUE;
1428 BOOL freesptr = TRUE;
1429 optionlist *ol, *ol2;
1433 uschar *inttype = US"";
1436 uschar *saved_condition, *strtemp;
1437 uschar **str_target;
1441 /* There may be leading spaces; thereafter, we expect an option name starting
1444 while (isspace(*s)) s++;
1446 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "option setting expected: %s", s);
1448 /* Read the name of the option, and skip any subsequent white space. If
1449 it turns out that what we read was "hide", set the flag indicating that
1450 this is a secure option, and loop to read the next word. */
1452 for (n = 0; n < 2; n++)
1454 while (isalnum(*s) || *s == '_')
1456 if (ptr < sizeof(name)-1) name[ptr++] = *s;
1460 while (isspace(*s)) s++;
1461 if (Ustrcmp(name, "hide") != 0) break;
1462 issecure = opt_secure;
1466 /* Deal with "no_" or "not_" here for booleans */
1468 if (Ustrncmp(name, "no_", 3) == 0)
1474 if (Ustrncmp(name, "not_", 4) == 0)
1480 /* Search the list for the given name. A non-existent name, or an option that
1481 is set twice, is a disaster. */
1483 ol = find_option(name + offset, oltop, last);
1487 if (unknown_txt == NULL) return FALSE;
1488 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, CS unknown_txt, name);
1491 if ((ol->type & opt_set) && !(ol->type & (opt_rep_con | opt_rep_str)))
1492 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1493 "\"%s\" option set for the second time", name);
1495 ol->type |= opt_set | issecure;
1496 type = ol->type & opt_mask;
1498 /* Types with data values must be followed by '='; the "no[t]_" prefix
1499 applies only to boolean values. */
1501 if (type < opt_bool || type > opt_bool_last)
1504 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1505 "negation prefix applied to a non-boolean option");
1507 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1508 "unexpected end of line (data missing) after %s", name);
1510 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "missing \"=\" after %s", name);
1513 /* If a boolean wasn't preceded by "no[t]_" it can be followed by = and
1514 true/false/yes/no, or, in the case of opt_expand_bool, a general string that
1515 ultimately expands to one of those values. */
1517 else if (*s != 0 && (offset != 0 || *s != '='))
1518 extra_chars_error(s, US"boolean option ", name, US"");
1520 /* Skip white space after = */
1522 if (*s == '=') while (isspace((*(++s))));
1524 /* If there is a data block and the opt_public flag is not set, change
1525 the data block pointer to the private options block. */
1527 if (data_block != NULL && (ol->type & opt_public) == 0)
1528 data_block = (void *)(((driver_instance *)data_block)->options_block);
1530 /* Now get the data according to the type. */
1534 /* If a string value is not enclosed in quotes, it consists of
1535 the rest of the current line, verbatim. Otherwise, string escapes
1538 A transport is specified as a string, which is then looked up in the
1539 list of transports. A search type is specified as one of a number of
1542 A set or rewrite rules for a driver is specified as a string, which is
1543 then parsed into a suitable chain of control blocks.
1545 Uids and gids are specified as strings which are then looked up in the
1546 passwd file. Lists of uids and gids are similarly specified as colon-
1547 separated strings. */
1552 case opt_expand_uid:
1553 case opt_expand_gid:
1558 reset_point = sptr = read_string(s, name);
1560 /* Having read a string, we now have several different ways of using it,
1561 depending on the data type, so do another switch. If keeping the actual
1562 string is not required (because it is interpreted), freesptr is set TRUE,
1563 and at the end we reset the pool. */
1567 /* If this was a string, set the variable to point to the new string,
1568 and set the flag so its store isn't reclaimed. If it was a list of rewrite
1569 rules, we still keep the string (for printing), and parse the rules into a
1570 control block and flags word. */
1573 if (data_block == NULL)
1574 str_target = (uschar **)(ol->value);
1576 str_target = (uschar **)((uschar *)data_block + (long int)(ol->value));
1577 if (ol->type & opt_rep_con)
1579 /* We already have a condition, we're conducting a crude hack to let
1580 multiple condition rules be chained together, despite storing them in
1582 saved_condition = *str_target;
1583 strtemp = string_sprintf("${if and{{bool_lax{%s}}{bool_lax{%s}}}}",
1584 saved_condition, sptr);
1585 *str_target = string_copy_malloc(strtemp);
1586 /* TODO(pdp): there is a memory leak here and just below
1587 when we set 3 or more conditions; I still don't
1588 understand the store mechanism enough to know
1589 what's the safe way to free content from an earlier store.
1590 AFAICT, stores stack, so freeing an early stored item also stores
1591 all data alloc'd after it. If we knew conditions were adjacent,
1592 we could survive that, but we don't. So I *think* we need to take
1593 another bit from opt_type to indicate "malloced"; this seems like
1594 quite a hack, especially for this one case. It also means that
1595 we can't ever reclaim the store from the *first* condition.
1597 Because we only do this once, near process start-up, I'm prepared to
1598 let this slide for the time being, even though it rankles. */
1600 else if (ol->type & opt_rep_str)
1602 uschar sep_o = Ustrncmp(name, "headers_add", 11)==0 ? '\n' : ':';
1603 int sep_i = -(int)sep_o;
1604 const uschar * list = sptr;
1606 uschar * list_o = *str_target;
1608 while ((s = string_nextinlist(&list, &sep_i, NULL, 0)))
1609 list_o = string_append_listele(list_o, sep_o, s);
1611 *str_target = string_copy_malloc(list_o);
1621 if (data_block == NULL)
1622 *((uschar **)(ol->value)) = sptr;
1624 *((uschar **)((uschar *)data_block + (long int)(ol->value))) = sptr;
1626 if (type == opt_rewrite)
1631 rewrite_rule **chain;
1634 sprintf(CS name2, "*%.50s_rules", name);
1635 ol2 = find_option(name2, oltop, last);
1636 sprintf(CS name2, "*%.50s_flags", name);
1637 ol3 = find_option(name2, oltop, last);
1639 if (ol2 == NULL || ol3 == NULL)
1640 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1641 "rewrite rules not available for driver");
1643 if (data_block == NULL)
1645 chain = (rewrite_rule **)(ol2->value);
1646 flagptr = (int *)(ol3->value);
1650 chain = (rewrite_rule **)((uschar *)data_block + (long int)(ol2->value));
1651 flagptr = (int *)((uschar *)data_block + (long int)(ol3->value));
1654 while ((p = string_nextinlist(CUSS &sptr, &sep, big_buffer, BIG_BUFFER_SIZE)))
1656 rewrite_rule *next = readconf_one_rewrite(p, flagptr, FALSE);
1658 chain = &(next->next);
1661 if ((*flagptr & (rewrite_all_envelope | rewrite_smtp)) != 0)
1662 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "rewrite rule specifies a "
1663 "non-header rewrite - not allowed at transport time -");
1667 /* If it was an expanded uid, see if there is any expansion to be
1668 done by checking for the presence of a $ character. If there is, save it
1669 in the corresponding *expand_user option field. Otherwise, fall through
1670 to treat it as a fixed uid. Ensure mutual exclusivity of the two kinds
1673 case opt_expand_uid:
1674 sprintf(CS name2, "*expand_%.50s", name);
1675 ol2 = find_option(name2, oltop, last);
1678 uschar *ss = (Ustrchr(sptr, '$') != NULL)? sptr : NULL;
1680 if (data_block == NULL)
1681 *((uschar **)(ol2->value)) = ss;
1683 *((uschar **)((uschar *)data_block + (long int)(ol2->value))) = ss;
1687 *(get_set_flag(name, oltop, last, data_block)) = FALSE;
1693 /* Look up a fixed uid, and also make use of the corresponding gid
1694 if a passwd entry is returned and the gid has not been set. */
1697 if (!route_finduser(sptr, &pw, &uid))
1698 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "user %s was not found", sptr);
1699 if (data_block == NULL)
1700 *((uid_t *)(ol->value)) = uid;
1702 *((uid_t *)((uschar *)data_block + (long int)(ol->value))) = uid;
1704 /* Set the flag indicating a fixed value is set */
1706 *(get_set_flag(name, oltop, last, data_block)) = TRUE;
1708 /* Handle matching gid if we have a passwd entry: done by finding the
1709 same name with terminating "user" changed to "group"; if not found,
1710 ignore. Also ignore if the value is already set. */
1712 if (pw == NULL) break;
1713 Ustrcpy(name+Ustrlen(name)-4, "group");
1714 ol2 = find_option(name, oltop, last);
1715 if (ol2 != NULL && ((ol2->type & opt_mask) == opt_gid ||
1716 (ol2->type & opt_mask) == opt_expand_gid))
1718 BOOL *set_flag = get_set_flag(name, oltop, last, data_block);
1721 if (data_block == NULL)
1722 *((gid_t *)(ol2->value)) = pw->pw_gid;
1724 *((gid_t *)((uschar *)data_block + (long int)(ol2->value))) = pw->pw_gid;
1730 /* If it was an expanded gid, see if there is any expansion to be
1731 done by checking for the presence of a $ character. If there is, save it
1732 in the corresponding *expand_user option field. Otherwise, fall through
1733 to treat it as a fixed gid. Ensure mutual exclusivity of the two kinds
1736 case opt_expand_gid:
1737 sprintf(CS name2, "*expand_%.50s", name);
1738 ol2 = find_option(name2, oltop, last);
1741 uschar *ss = (Ustrchr(sptr, '$') != NULL)? sptr : NULL;
1743 if (data_block == NULL)
1744 *((uschar **)(ol2->value)) = ss;
1746 *((uschar **)((uschar *)data_block + (long int)(ol2->value))) = ss;
1750 *(get_set_flag(name, oltop, last, data_block)) = FALSE;
1756 /* Handle freestanding gid */
1759 if (!route_findgroup(sptr, &gid))
1760 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "group %s was not found", sptr);
1761 if (data_block == NULL)
1762 *((gid_t *)(ol->value)) = gid;
1764 *((gid_t *)((uschar *)data_block + (long int)(ol->value))) = gid;
1765 *(get_set_flag(name, oltop, last, data_block)) = TRUE;
1768 /* If it was a uid list, look up each individual entry, and build
1769 a vector of uids, with a count in the first element. Put the vector
1770 in malloc store so we can free the string. (We are reading into
1771 permanent store already.) */
1779 const uschar *op = expand_string (sptr);
1782 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "failed to expand %s: %s",
1783 name, expand_string_message);
1786 if (*p != 0) count++;
1787 while (*p != 0) if (*p++ == ':' && *p != 0) count++;
1788 list = store_malloc(count*sizeof(uid_t));
1789 list[ptr++] = (uid_t)(count - 1);
1791 if (data_block == NULL)
1792 *((uid_t **)(ol->value)) = list;
1794 *((uid_t **)((uschar *)data_block + (long int)(ol->value))) = list;
1800 (void)string_nextinlist(&p, &sep, big_buffer, BIG_BUFFER_SIZE);
1801 if (!route_finduser(big_buffer, NULL, &uid))
1802 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "user %s was not found",
1809 /* If it was a gid list, look up each individual entry, and build
1810 a vector of gids, with a count in the first element. Put the vector
1811 in malloc store so we can free the string. (We are reading into permanent
1820 const uschar *op = expand_string (sptr);
1823 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "failed to expand %s: %s",
1824 name, expand_string_message);
1827 if (*p != 0) count++;
1828 while (*p != 0) if (*p++ == ':' && *p != 0) count++;
1829 list = store_malloc(count*sizeof(gid_t));
1830 list[ptr++] = (gid_t)(count - 1);
1832 if (data_block == NULL)
1833 *((gid_t **)(ol->value)) = list;
1835 *((gid_t **)((uschar *)data_block + (long int)(ol->value))) = list;
1841 (void)string_nextinlist(&p, &sep, big_buffer, BIG_BUFFER_SIZE);
1842 if (!route_findgroup(big_buffer, &gid))
1843 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "group %s was not found",
1851 /* Release store if the value of the string doesn't need to be kept. */
1853 if (freesptr) store_reset(reset_point);
1856 /* Expanded boolean: if no characters follow, or if there are no dollar
1857 characters, this is a fixed-valued boolean, and we fall through. Otherwise,
1858 save the string for later expansion in the alternate place. */
1860 case opt_expand_bool:
1861 if (*s != 0 && Ustrchr(s, '$') != 0)
1863 sprintf(CS name2, "*expand_%.50s", name);
1864 ol2 = find_option(name2, oltop, last);
1867 reset_point = sptr = read_string(s, name);
1868 if (data_block == NULL)
1869 *((uschar **)(ol2->value)) = sptr;
1871 *((uschar **)((uschar *)data_block + (long int)(ol2->value))) = sptr;
1878 /* Boolean: if no characters follow, the value is boolvalue. Otherwise
1879 look for yes/not/true/false. Some booleans are stored in a single bit in
1880 a single int. There's a special fudge for verify settings; without a suffix
1881 they set both xx_sender and xx_recipient. The table points to the sender
1882 value; search subsequently for the recipient. There's another special case:
1883 opt_bool_set also notes when a boolean has been set. */
1887 case opt_bool_verify:
1891 s = readconf_readname(name2, 64, s);
1892 if (strcmpic(name2, US"true") == 0 || strcmpic(name2, US"yes") == 0)
1894 else if (strcmpic(name2, US"false") == 0 || strcmpic(name2, US"no") == 0)
1896 else log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1897 "\"%s\" is not a valid value for the \"%s\" option", name2, name);
1898 if (*s != 0) extra_chars_error(s, string_sprintf("\"%s\" ", name2),
1899 US"for boolean option ", name);
1902 /* Handle single-bit type. */
1904 if (type == opt_bit)
1906 int bit = 1 << ((ol->type >> 16) & 31);
1907 int *ptr = (data_block == NULL)?
1908 (int *)(ol->value) :
1909 (int *)((uschar *)data_block + (long int)ol->value);
1910 if (boolvalue) *ptr |= bit; else *ptr &= ~bit;
1914 /* Handle full BOOL types */
1916 if (data_block == NULL)
1917 *((BOOL *)(ol->value)) = boolvalue;
1919 *((BOOL *)((uschar *)data_block + (long int)(ol->value))) = boolvalue;
1923 if (type == opt_bool_verify)
1925 sprintf(CS name2, "%.50s_recipient", name + offset);
1926 ol2 = find_option(name2, oltop, last);
1929 if (data_block == NULL)
1930 *((BOOL *)(ol2->value)) = boolvalue;
1932 *((BOOL *)((uschar *)data_block + (long int)(ol2->value))) = boolvalue;
1936 /* Note that opt_bool_set type is set, if there is somewhere to do so */
1938 else if (type == opt_bool_set)
1940 sprintf(CS name2, "*set_%.50s", name + offset);
1941 ol2 = find_option(name2, oltop, last);
1944 if (data_block == NULL)
1945 *((BOOL *)(ol2->value)) = TRUE;
1947 *((BOOL *)((uschar *)data_block + (long int)(ol2->value))) = TRUE;
1956 inttype = US"octal ";
1958 /* Integer: a simple(ish) case; allow octal and hex formats, and
1959 suffixes K and M. The different types affect output, not input. */
1968 lvalue = strtol(CS s, CSS &endptr, intbase);
1971 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "%sinteger expected for %s",
1974 if (errno != ERANGE)
1976 if (tolower(*endptr) == 'k')
1978 if (lvalue > INT_MAX/1024 || lvalue < INT_MIN/1024) errno = ERANGE;
1979 else lvalue *= 1024;
1982 else if (tolower(*endptr) == 'm')
1984 if (lvalue > INT_MAX/(1024*1024) || lvalue < INT_MIN/(1024*1024))
1986 else lvalue *= 1024*1024;
1991 if (errno == ERANGE || lvalue > INT_MAX || lvalue < INT_MIN)
1992 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1993 "absolute value of integer \"%s\" is too large (overflow)", s);
1995 while (isspace(*endptr)) endptr++;
1997 extra_chars_error(endptr, inttype, US"integer value for ", name);
1999 value = (int)lvalue;
2002 if (data_block == NULL)
2003 *((int *)(ol->value)) = value;
2005 *((int *)((uschar *)data_block + (long int)(ol->value))) = value;
2008 /* Integer held in K: again, allow octal and hex formats, and suffixes K and
2015 value = strtol(CS s, CSS &endptr, intbase);
2018 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "%sinteger expected for %s",
2021 if (errno != ERANGE)
2023 if (tolower(*endptr) == 'm')
2025 if (value > INT_MAX/1024 || value < INT_MIN/1024) errno = ERANGE;
2029 else if (tolower(*endptr) == 'k')
2035 value = (value + 512)/1024;
2039 if (errno == ERANGE) log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
2040 "absolute value of integer \"%s\" is too large (overflow)", s);
2042 while (isspace(*endptr)) endptr++;
2044 extra_chars_error(endptr, inttype, US"integer value for ", name);
2047 if (data_block == NULL)
2048 *((int *)(ol->value)) = value;
2050 *((int *)((uschar *)data_block + (long int)(ol->value))) = value;
2053 /* Fixed-point number: held to 3 decimal places. */
2056 if (sscanf(CS s, "%d%n", &value, &count) != 1)
2057 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
2058 "fixed-point number expected for %s", name);
2060 if (value < 0) log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
2061 "integer \"%s\" is too large (overflow)", s);
2065 if (value < 0) log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
2066 "integer \"%s\" is too large (overflow)", s);
2068 if (s[count] == '.')
2071 while (isdigit(s[++count]))
2073 value += (s[count] - '0') * d;
2078 while (isspace(s[count])) count++;
2081 extra_chars_error(s+count, US"fixed-point value for ", name, US"");
2083 if (data_block == NULL)
2084 *((int *)(ol->value)) = value;
2086 *((int *)((uschar *)data_block + (long int)(ol->value))) = value;
2089 /* There's a special routine to read time values. */
2092 value = readconf_readtime(s, 0, FALSE);
2094 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "invalid time value for %s",
2096 if (data_block == NULL)
2097 *((int *)(ol->value)) = value;
2099 *((int *)((uschar *)data_block + (long int)(ol->value))) = value;
2102 /* A time list is a list of colon-separated times, with the first
2103 element holding the size of the list and the second the number of
2109 int *list = (data_block == NULL)?
2110 (int *)(ol->value) :
2111 (int *)((uschar *)data_block + (long int)(ol->value));
2113 if (*s != 0) for (count = 1; count <= list[0] - 2; count++)
2116 uschar *snext = Ustrchr(s, ':');
2120 while (ss > s && isspace(ss[-1])) ss--;
2123 value = readconf_readtime(s, terminator, FALSE);
2125 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "invalid time value for %s",
2127 if (count > 1 && value <= list[count])
2128 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
2129 "time value out of order for %s", name);
2130 list[count+1] = value;
2131 if (snext == NULL) break;
2133 while (isspace(*s)) s++;
2136 if (count > list[0] - 2)
2137 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "too many time values for %s",
2139 if (count > 0 && list[2] == 0) count = 0;
2146 void (*fn)() = ol->value;
2157 /*************************************************
2158 * Print a time value *
2159 *************************************************/
2162 Argument: a time value in seconds
2163 Returns: pointer to a fixed buffer containing the time as a string,
2164 in readconf_readtime() format
2168 readconf_printtime(int t)
2171 uschar *p = time_buffer;
2188 if (w > 0) { sprintf(CS p, "%dw", w); while (*p) p++; }
2189 if (d > 0) { sprintf(CS p, "%dd", d); while (*p) p++; }
2190 if (h > 0) { sprintf(CS p, "%dh", h); while (*p) p++; }
2191 if (m > 0) { sprintf(CS p, "%dm", m); while (*p) p++; }
2192 if (s > 0 || p == time_buffer) sprintf(CS p, "%ds", s);
2199 /*************************************************
2200 * Print an individual option value *
2201 *************************************************/
2203 /* This is used by the -bP option, so prints to the standard output.
2204 The entire options list is passed in as an argument, because some options come
2205 in pairs - typically uid/gid settings, which can either be explicit numerical
2206 values, or strings to be expanded later. If the numerical value is unset,
2207 search for "*expand_<name>" to see if there is a string equivalent.
2210 ol option entry, or NULL for an unknown option
2212 options_block NULL for main configuration options; otherwise points to
2213 a driver block; if the option doesn't have opt_public
2214 set, then options_block->options_block is where the item
2216 oltop points to the option list in which ol exists
2217 last one more than the offset of the last entry in optop
2218 no_labels do not show "foo = " at the start.
2224 print_ol(optionlist *ol, uschar *name, void *options_block,
2225 optionlist *oltop, int last, BOOL no_labels)
2238 printf("%s is not a known option\n", name);
2242 /* Non-admin callers cannot see options that have been flagged secure by the
2245 if (!admin_user && (ol->type & opt_secure) != 0)
2247 const char * const hidden = "<value not displayable>";
2249 printf("%s\n", hidden);
2251 printf("%s = %s\n", name, hidden);
2255 /* Else show the value of the option */
2258 if (options_block != NULL)
2260 if ((ol->type & opt_public) == 0)
2261 options_block = (void *)(((driver_instance *)options_block)->options_block);
2262 value = (void *)((uschar *)options_block + (long int)value);
2265 switch(ol->type & opt_mask)
2268 case opt_rewrite: /* Show the text value */
2269 s = *((uschar **)value);
2270 if (!no_labels) printf("%s = ", name);
2271 printf("%s\n", (s == NULL)? US"" : string_printing2(s, FALSE));
2275 if (!no_labels) printf("%s = ", name);
2276 printf("%d\n", *((int *)value));
2281 int x = *((int *)value);
2282 if (x != 0 && (x & 1023) == 0)
2286 if ((x & 1023) == 0)
2291 if (!no_labels) printf("%s = ", name);
2292 printf("%d%c\n", x, c);
2296 if (!no_labels) printf("%s = ", name);
2304 int x = *((int *)value);
2305 if (!no_labels) printf("%s = ", name);
2306 if (x == 0) printf("0\n");
2307 else if ((x & 1023) == 0) printf("%dM\n", x >> 10);
2308 else printf("%dK\n", x);
2313 if (!no_labels) printf("%s = ", name);
2314 printf("%#o\n", *((int *)value));
2317 /* Can be negative only when "unset", in which case integer */
2321 int x = *((int *)value);
2324 if (x < 0) printf("%s =\n", name); else
2326 if (!no_labels) printf("%s = ", name);
2327 printf("%d.", x/1000);
2340 /* If the numerical value is unset, try for the string value */
2342 case opt_expand_uid:
2343 if (! *get_set_flag(name, oltop, last, options_block))
2345 sprintf(CS name2, "*expand_%.50s", name);
2346 ol2 = find_option(name2, oltop, last);
2349 void *value2 = ol2->value;
2350 if (options_block != NULL)
2351 value2 = (void *)((uschar *)options_block + (long int)value2);
2352 s = *((uschar **)value2);
2353 if (!no_labels) printf("%s = ", name);
2354 printf("%s\n", (s == NULL)? US"" : string_printing(s));
2359 /* Else fall through */
2362 if (!no_labels) printf("%s = ", name);
2363 if (! *get_set_flag(name, oltop, last, options_block))
2367 pw = getpwuid(*((uid_t *)value));
2369 printf("%ld\n", (long int)(*((uid_t *)value)));
2370 else printf("%s\n", pw->pw_name);
2374 /* If the numerical value is unset, try for the string value */
2376 case opt_expand_gid:
2377 if (! *get_set_flag(name, oltop, last, options_block))
2379 sprintf(CS name2, "*expand_%.50s", name);
2380 ol2 = find_option(name2, oltop, last);
2381 if (ol2 != NULL && (ol2->type & opt_mask) == opt_stringptr)
2383 void *value2 = ol2->value;
2384 if (options_block != NULL)
2385 value2 = (void *)((uschar *)options_block + (long int)value2);
2386 s = *((uschar **)value2);
2387 if (!no_labels) printf("%s = ", name);
2388 printf("%s\n", (s == NULL)? US"" : string_printing(s));
2393 /* Else fall through */
2396 if (!no_labels) printf("%s = ", name);
2397 if (! *get_set_flag(name, oltop, last, options_block))
2401 gr = getgrgid(*((int *)value));
2403 printf("%ld\n", (long int)(*((int *)value)));
2404 else printf("%s\n", gr->gr_name);
2409 uidlist = *((uid_t **)value);
2410 if (!no_labels) printf("%s =", name);
2411 if (uidlist != NULL)
2415 if (no_labels) sep = '\0';
2416 for (i = 1; i <= (int)(uidlist[0]); i++)
2418 uschar *name = NULL;
2419 pw = getpwuid(uidlist[i]);
2420 if (pw != NULL) name = US pw->pw_name;
2421 if (sep != '\0') printf("%c", sep);
2422 if (name != NULL) printf("%s", name);
2423 else printf("%ld", (long int)(uidlist[i]));
2431 gidlist = *((gid_t **)value);
2432 if (!no_labels) printf("%s =", name);
2433 if (gidlist != NULL)
2437 if (no_labels) sep = '\0';
2438 for (i = 1; i <= (int)(gidlist[0]); i++)
2440 uschar *name = NULL;
2441 gr = getgrgid(gidlist[i]);
2442 if (gr != NULL) name = US gr->gr_name;
2443 if (sep != '\0') printf("%c", sep);
2444 if (name != NULL) printf("%s", name);
2445 else printf("%ld", (long int)(gidlist[i]));
2453 if (!no_labels) printf("%s = ", name);
2454 printf("%s\n", readconf_printtime(*((int *)value)));
2460 int *list = (int *)value;
2461 if (!no_labels) printf("%s = ", name);
2462 for (i = 0; i < list[1]; i++)
2463 printf("%s%s", (i == 0)? "" : ":", readconf_printtime(list[i+2]));
2469 printf("%s%s\n", ((*((int *)value)) & (1 << ((ol->type >> 16) & 31)))?
2473 case opt_expand_bool:
2474 sprintf(CS name2, "*expand_%.50s", name);
2475 ol2 = find_option(name2, oltop, last);
2476 if (ol2 != NULL && ol2->value != NULL)
2478 void *value2 = ol2->value;
2479 if (options_block != NULL)
2480 value2 = (void *)((uschar *)options_block + (long int)value2);
2481 s = *((uschar **)value2);
2484 if (!no_labels) printf("%s = ", name);
2485 printf("%s\n", string_printing(s));
2488 /* s == NULL => string not set; fall through */
2494 case opt_bool_verify:
2496 printf("%s%s\n", (*((BOOL *)value))? "" : "no_", name);
2503 /*************************************************
2504 * Print value from main configuration *
2505 *************************************************/
2507 /* This function, called as a result of encountering the -bP option,
2508 causes the value of any main configuration variable to be output if the
2509 second argument is NULL. There are some special values:
2511 all print all main configuration options
2512 configure_file print the name of the configuration file
2513 routers print the routers' configurations
2514 transports print the transports' configuration
2515 authenticators print the authenticators' configuration
2516 macros print the macros' configuration
2517 router_list print a list of router names
2518 transport_list print a list of transport names
2519 authenticator_list print a list of authentication mechanism names
2520 macro_list print a list of macro names
2521 +name print a named list item
2522 local_scan print the local_scan options
2524 If the second argument is not NULL, it must be one of "router", "transport",
2525 "authenticator" or "macro" in which case the first argument identifies the
2526 driver whose options are to be printed.
2529 name option name if type == NULL; else driver name
2530 type NULL or driver type name, as described above
2531 no_labels avoid the "foo = " at the start of an item
2537 readconf_print(uschar *name, uschar *type, BOOL no_labels)
2539 BOOL names_only = FALSE;
2541 optionlist *ol2 = NULL;
2542 driver_instance *d = NULL;
2553 static uschar *types[] = { US"address", US"domain", US"host",
2555 static tree_node **anchors[] = { &addresslist_anchor, &domainlist_anchor,
2556 &hostlist_anchor, &localpartlist_anchor };
2558 for (i = 0; i < 4; i++)
2560 t = tree_search(*(anchors[i]), name+1);
2565 printf("%s\n", ((namedlist_block *)(t->data.ptr))->string);
2567 printf("%slist %s = %s\n", types[i], name+1,
2568 ((namedlist_block *)(t->data.ptr))->string);
2573 printf("no address, domain, host, or local part list called \"%s\" "
2574 "exists\n", name+1);
2579 if (Ustrcmp(name, "configure_file") == 0)
2581 printf("%s\n", CS config_main_filename);
2585 if (Ustrcmp(name, "all") == 0)
2587 for (ol = optionlist_config;
2588 ol < optionlist_config + optionlist_config_size; ol++)
2590 if ((ol->type & opt_hidden) == 0)
2591 print_ol(ol, US ol->name, NULL,
2592 optionlist_config, optionlist_config_size,
2598 if (Ustrcmp(name, "local_scan") == 0)
2600 #ifndef LOCAL_SCAN_HAS_OPTIONS
2601 printf("local_scan() options are not supported\n");
2603 for (ol = local_scan_options;
2604 ol < local_scan_options + local_scan_options_count; ol++)
2606 print_ol(ol, US ol->name, NULL, local_scan_options,
2607 local_scan_options_count, no_labels);
2613 if (Ustrcmp(name, "routers") == 0)
2618 else if (Ustrcmp(name, "transports") == 0)
2620 type = US"transport";
2624 else if (Ustrcmp(name, "authenticators") == 0)
2626 type = US"authenticator";
2630 else if (Ustrcmp(name, "macros") == 0)
2636 else if (Ustrcmp(name, "router_list") == 0)
2643 else if (Ustrcmp(name, "transport_list") == 0)
2645 type = US"transport";
2650 else if (Ustrcmp(name, "authenticator_list") == 0)
2652 type = US"authenticator";
2657 else if (Ustrcmp(name, "macro_list") == 0)
2666 print_ol(find_option(name, optionlist_config, optionlist_config_size),
2667 name, NULL, optionlist_config, optionlist_config_size, no_labels);
2672 /* Handle the options for a router or transport. Skip options that are flagged
2673 as hidden. Some of these are options with names starting with '*', used for
2674 internal alternative representations of other options (which the printing
2675 function will sort out). Others are synonyms kept for backward compatibility.
2678 if (Ustrcmp(type, "router") == 0)
2680 d = (driver_instance *)routers;
2681 ol2 = optionlist_routers;
2682 size = optionlist_routers_size;
2684 else if (Ustrcmp(type, "transport") == 0)
2686 d = (driver_instance *)transports;
2687 ol2 = optionlist_transports;
2688 size = optionlist_transports_size;
2690 else if (Ustrcmp(type, "authenticator") == 0)
2692 d = (driver_instance *)auths;
2693 ol2 = optionlist_auths;
2694 size = optionlist_auths_size;
2697 else if (Ustrcmp(type, "macro") == 0)
2699 /* People store passwords in macros and they were previously not available
2700 for printing. So we have an admin_users restriction. */
2703 fprintf(stderr, "exim: permission denied\n");
2706 for (m = macros; m != NULL; m = m->next)
2708 if (name == NULL || Ustrcmp(name, m->name) == 0)
2711 printf("%s\n", CS m->name);
2713 printf("%s=%s\n", CS m->name, CS m->replacement);
2719 printf("%s %s not found\n", type, name);
2725 for (; d != NULL; d = d->next) printf("%s\n", CS d->name);
2729 /* Either search for a given driver, or print all of them */
2731 for (; d != NULL; d = d->next)
2734 printf("\n%s %s:\n", d->name, type);
2735 else if (Ustrcmp(d->name, name) != 0) continue;
2737 for (ol = ol2; ol < ol2 + size; ol++)
2739 if ((ol->type & opt_hidden) == 0)
2740 print_ol(ol, US ol->name, d, ol2, size, no_labels);
2743 for (ol = d->info->options;
2744 ol < d->info->options + *(d->info->options_count); ol++)
2746 if ((ol->type & opt_hidden) == 0)
2747 print_ol(ol, US ol->name, d, d->info->options, *(d->info->options_count), no_labels);
2749 if (name != NULL) return;
2751 if (name != NULL) printf("%s %s not found\n", type, name);
2756 /*************************************************
2757 * Read a named list item *
2758 *************************************************/
2760 /* This function reads a name and a list (i.e. string). The name is used to
2761 save the list in a tree, sorted by its name. Each entry also has a number,
2762 which can be used for caching tests, but if the string contains any expansion
2763 items other than $key, the number is set negative to inhibit caching. This
2764 mechanism is used for domain, host, and address lists that are referenced by
2768 anchorp points to the tree anchor
2769 numberp points to the current number for this tree
2770 max the maximum number permitted
2771 s the text of the option line, starting immediately after the name
2773 tname the name of the list type, for messages
2779 read_named_list(tree_node **anchorp, int *numberp, int max, uschar *s,
2782 BOOL forcecache = FALSE;
2785 namedlist_block *nb = store_get(sizeof(namedlist_block));
2787 if (Ustrncmp(s, "_cache", 6) == 0)
2794 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "unrecognized configuration line");
2796 if (*numberp >= max)
2797 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "too many named %ss (max is %d)\n",
2800 while (isspace(*s)) s++;
2802 while (isalnum(*s) || *s == '_') s++;
2803 t = store_get(sizeof(tree_node) + s-ss);
2804 Ustrncpy(t->name, ss, s-ss);
2806 while (isspace(*s)) s++;
2808 if (!tree_insertnode(anchorp, t))
2809 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
2810 "duplicate name \"%s\" for a named %s", t->name, tname);
2813 nb->number = *numberp;
2816 if (*s++ != '=') log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
2817 "missing '=' after \"%s\"", t->name);
2818 while (isspace(*s)) s++;
2819 nb->string = read_string(s, t->name);
2820 nb->cache_data = NULL;
2822 /* Check the string for any expansions; if any are found, mark this list
2823 uncacheable unless the user has explicited forced caching. */
2825 if (!forcecache && Ustrchr(nb->string, '$') != NULL) nb->number = -1;
2831 /*************************************************
2832 * Unpick data for a rate limit *
2833 *************************************************/
2835 /* This function is called to unpick smtp_ratelimit_{mail,rcpt} into four
2839 s string, in the form t,b,f,l
2840 where t is the threshold (integer)
2841 b is the initial delay (time)
2842 f is the multiplicative factor (fixed point)
2843 k is the maximum time (time)
2844 threshold where to store threshold
2845 base where to store base in milliseconds
2846 factor where to store factor in milliseconds
2847 limit where to store limit
2849 Returns: nothing (panics on error)
2853 unpick_ratelimit(uschar *s, int *threshold, int *base, double *factor,
2856 uschar bstring[16], lstring[16];
2858 if (sscanf(CS s, "%d, %15[0123456789smhdw.], %lf, %15s", threshold, bstring,
2859 factor, lstring) == 4)
2861 *base = readconf_readtime(bstring, 0, TRUE);
2862 *limit = readconf_readtime(lstring, 0, TRUE);
2863 if (*base >= 0 && *limit >= 0) return;
2865 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "malformed ratelimit data: %s", s);
2871 /*************************************************
2872 * Drop privs for checking TLS config *
2873 *************************************************/
2875 /* We want to validate TLS options during readconf, but do not want to be
2876 root when we call into the TLS library, in case of library linkage errors
2877 which cause segfaults; before this check, those were always done as the Exim
2878 runtime user and it makes sense to continue with that.
2880 Assumes: tls_require_ciphers has been set, if it will be
2881 exim_user has been set, if it will be
2882 exim_group has been set, if it will be
2884 Returns: bool for "okay"; false will cause caller to immediately exit.
2889 tls_dropprivs_validate_require_cipher(void)
2891 const uschar *errmsg;
2894 void (*oldsignal)(int);
2896 oldsignal = signal(SIGCHLD, SIG_DFL);
2899 if ((pid = fork()) < 0)
2900 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "fork failed for TLS check");
2904 /* in some modes, will have dropped privilege already */
2906 exim_setugid(exim_uid, exim_gid, FALSE,
2907 US"calling tls_validate_require_cipher");
2909 errmsg = tls_validate_require_cipher();
2912 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
2913 "tls_require_ciphers invalid: %s", errmsg);
2920 rc = waitpid(pid, &status, 0);
2921 } while (rc < 0 && errno == EINTR);
2924 debug_printf("tls_validate_require_cipher child %d ended: status=0x%x\n",
2927 signal(SIGCHLD, oldsignal);
2931 #endif /* SUPPORT_TLS */
2936 /*************************************************
2937 * Read main configuration options *
2938 *************************************************/
2940 /* This function is the first to be called for configuration reading. It
2941 opens the configuration file and reads general configuration settings until
2942 it reaches the end of the configuration section. The file is then left open so
2943 that the remaining configuration data can subsequently be read if needed for
2946 The configuration file must be owned either by root or exim, and be writeable
2947 only by root or uid/gid exim. The values for Exim's uid and gid can be changed
2948 in the config file, so the test is done on the compiled in values. A slight
2949 anomaly, to be carefully documented.
2951 The name of the configuration file is taken from a list that is included in the
2952 binary of Exim. It can be altered from the command line, but if that is done,
2953 root privilege is immediately withdrawn unless the caller is root or exim.
2954 The first file on the list that exists is used.
2956 For use on multiple systems that share file systems, first look for a
2957 configuration file whose name has the current node name on the end. If that is
2958 not found, try the generic name. For really contorted configurations, that run
2959 multiple Exims with different uid settings, first try adding the effective uid
2960 before the node name. These complications are going to waste resources on most
2961 systems. Therefore they are available only when requested by compile-time
2968 struct stat statbuf;
2969 uschar *s, *filename;
2970 const uschar *list = config_main_filelist;
2972 /* Loop through the possible file names */
2974 while((filename = string_nextinlist(&list, &sep, big_buffer, big_buffer_size))
2977 /* Cut out all the fancy processing unless specifically wanted */
2979 #if defined(CONFIGURE_FILE_USE_NODE) || defined(CONFIGURE_FILE_USE_EUID)
2980 uschar *suffix = filename + Ustrlen(filename);
2982 /* Try for the node-specific file if a node name exists */
2984 #ifdef CONFIGURE_FILE_USE_NODE
2986 if (uname(&uts) >= 0)
2988 #ifdef CONFIGURE_FILE_USE_EUID
2989 sprintf(CS suffix, ".%ld.%.256s", (long int)original_euid, uts.nodename);
2990 config_file = Ufopen(filename, "rb");
2991 if (config_file == NULL)
2992 #endif /* CONFIGURE_FILE_USE_EUID */
2994 sprintf(CS suffix, ".%.256s", uts.nodename);
2995 config_file = Ufopen(filename, "rb");
2998 #endif /* CONFIGURE_FILE_USE_NODE */
3000 /* Otherwise, try the generic name, possibly with the euid added */
3002 #ifdef CONFIGURE_FILE_USE_EUID
3003 if (config_file == NULL)
3005 sprintf(CS suffix, ".%ld", (long int)original_euid);
3006 config_file = Ufopen(filename, "rb");
3008 #endif /* CONFIGURE_FILE_USE_EUID */
3010 /* Finally, try the unadorned name */
3012 if (config_file == NULL)
3015 config_file = Ufopen(filename, "rb");
3017 #else /* if neither defined */
3019 /* This is the common case when the fancy processing is not included. */
3021 config_file = Ufopen(filename, "rb");
3024 /* If the file does not exist, continue to try any others. For any other
3025 error, break out (and die). */
3027 if (config_file != NULL || errno != ENOENT) break;
3030 /* On success, save the name for verification; config_filename is used when
3031 logging configuration errors (it changes for .included files) whereas
3032 config_main_filename is the name shown by -bP. Failure to open a configuration
3033 file is a serious disaster. */
3035 if (config_file != NULL)
3038 config_filename = config_main_filename = string_copy(filename);
3040 p = Ustrrchr(filename, '/');
3041 config_main_directory = p ? string_copyn(filename, p - filename)
3042 : string_copy(US".");
3046 if (filename == NULL)
3047 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "non-existent configuration file(s): "
3048 "%s", config_main_filelist);
3050 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "%s", string_open_failed(errno,
3051 "configuration file %s", filename));
3054 /* Check the status of the file we have opened, if we have retained root
3055 privileges and the file isn't /dev/null (which *should* be 0666). */
3057 if (trusted_config && Ustrcmp(filename, US"/dev/null"))
3059 if (fstat(fileno(config_file), &statbuf) != 0)
3060 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "failed to stat configuration file %s",
3063 if ((statbuf.st_uid != root_uid /* owner not root */
3064 #ifdef CONFIGURE_OWNER
3065 && statbuf.st_uid != config_uid /* owner not the special one */
3068 (statbuf.st_gid != root_gid /* group not root & */
3069 #ifdef CONFIGURE_GROUP
3070 && statbuf.st_gid != config_gid /* group not the special one */
3072 && (statbuf.st_mode & 020) != 0) || /* group writeable */
3074 ((statbuf.st_mode & 2) != 0)) /* world writeable */
3076 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "Exim configuration file %s has the "
3077 "wrong owner, group, or mode", big_buffer);
3080 /* Process the main configuration settings. They all begin with a lower case
3081 letter. If we see something starting with an upper case letter, it is taken as
3082 a macro definition. */
3084 while ((s = get_config_line()) != NULL)
3086 if (isupper(s[0])) read_macro_assignment(s);
3088 else if (Ustrncmp(s, "domainlist", 10) == 0)
3089 read_named_list(&domainlist_anchor, &domainlist_count,
3090 MAX_NAMED_LIST, s+10, US"domain list");
3092 else if (Ustrncmp(s, "hostlist", 8) == 0)
3093 read_named_list(&hostlist_anchor, &hostlist_count,
3094 MAX_NAMED_LIST, s+8, US"host list");
3096 else if (Ustrncmp(s, US"addresslist", 11) == 0)
3097 read_named_list(&addresslist_anchor, &addresslist_count,
3098 MAX_NAMED_LIST, s+11, US"address list");
3100 else if (Ustrncmp(s, US"localpartlist", 13) == 0)
3101 read_named_list(&localpartlist_anchor, &localpartlist_count,
3102 MAX_NAMED_LIST, s+13, US"local part list");
3105 (void) readconf_handle_option(s, optionlist_config, optionlist_config_size,
3106 NULL, US"main option \"%s\" unknown");
3110 /* If local_sender_retain is set, local_from_check must be unset. */
3112 if (local_sender_retain && local_from_check)
3113 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "both local_from_check and "
3114 "local_sender_retain are set; this combination is not allowed");
3116 /* If the timezone string is empty, set it to NULL, implying no TZ variable
3119 if (timezone_string != NULL && *timezone_string == 0) timezone_string = NULL;
3121 /* The max retry interval must not be greater than 24 hours. */
3123 if (retry_interval_max > 24*60*60) retry_interval_max = 24*60*60;
3125 /* remote_max_parallel must be > 0 */
3127 if (remote_max_parallel <= 0) remote_max_parallel = 1;
3129 /* Save the configured setting of freeze_tell, so we can re-instate it at the
3130 start of a new SMTP message. */
3132 freeze_tell_config = freeze_tell;
3134 /* The primary host name may be required for expansion of spool_directory
3135 and log_file_path, so make sure it is set asap. It is obtained from uname(),
3136 but if that yields an unqualified value, make a FQDN by using gethostbyname to
3137 canonize it. Some people like upper case letters in their host names, so we
3138 don't force the case. */
3140 if (primary_hostname == NULL)
3142 const uschar *hostname;
3144 if (uname(&uts) < 0)
3145 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "uname() failed to yield host name");
3146 hostname = US uts.nodename;
3148 if (Ustrchr(hostname, '.') == NULL)
3151 struct hostent *hostdata;
3154 if (!disable_ipv6 && (dns_ipv4_lookup == NULL ||
3155 match_isinlist(hostname, CUSS &dns_ipv4_lookup, 0, NULL, NULL,
3156 MCL_DOMAIN, TRUE, NULL) != OK))
3165 #if HAVE_GETIPNODEBYNAME
3167 hostdata = getipnodebyname(CS hostname, af, 0, &error_num);
3169 hostdata = gethostbyname2(CS hostname, af);
3172 hostdata = gethostbyname(CS hostname);
3175 if (hostdata != NULL)
3177 hostname = US hostdata->h_name;
3181 if (af == AF_INET) break;
3186 primary_hostname = string_copy(hostname);
3189 /* Set up default value for smtp_active_hostname */
3191 smtp_active_hostname = primary_hostname;
3193 /* If spool_directory wasn't set in the build-time configuration, it must have
3194 got set above. Of course, writing to the log may not work if log_file_path is
3195 not set, but it will at least get to syslog or somewhere, with any luck. */
3197 if (*spool_directory == 0)
3198 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "spool_directory undefined: cannot "
3201 /* Expand the spool directory name; it may, for example, contain the primary
3202 host name. Same comment about failure. */
3204 s = expand_string(spool_directory);
3206 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "failed to expand spool_directory "
3207 "\"%s\": %s", spool_directory, expand_string_message);
3208 spool_directory = s;
3210 /* Expand log_file_path, which must contain "%s" in any component that isn't
3211 the null string or "syslog". It is also allowed to contain one instance of %D
3212 or %M. However, it must NOT contain % followed by anything else. */
3214 if (*log_file_path != 0)
3216 const uschar *ss, *sss;
3217 int sep = ':'; /* Fixed for log file path */
3218 s = expand_string(log_file_path);
3220 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "failed to expand log_file_path "
3221 "\"%s\": %s", log_file_path, expand_string_message);
3224 while ((sss = string_nextinlist(&ss,&sep,big_buffer,big_buffer_size)) != NULL)
3227 if (sss[0] == 0 || Ustrcmp(sss, "syslog") == 0) continue;
3228 t = Ustrstr(sss, "%s");
3230 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "log_file_path \"%s\" does not "
3231 "contain \"%%s\"", sss);
3233 t = Ustrchr(sss, '%');
3236 if ((t[1] != 'D' && t[1] != 'M') || Ustrchr(t+2, '%') != NULL)
3237 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "log_file_path \"%s\" contains "
3238 "unexpected \"%%\" character", s);
3245 /* Interpret syslog_facility into an integer argument for 'ident' param to
3246 openlog(). Default is LOG_MAIL set in globals.c. Allow the user to omit the
3249 if (syslog_facility_str != NULL)
3252 uschar *s = syslog_facility_str;
3254 if ((Ustrlen(syslog_facility_str) >= 4) &&
3255 (strncmpic(syslog_facility_str, US"log_", 4) == 0))
3258 for (i = 0; i < syslog_list_size; i++)
3260 if (strcmpic(s, syslog_list[i].name) == 0)
3262 syslog_facility = syslog_list[i].value;
3267 if (i >= syslog_list_size)
3269 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
3270 "failed to interpret syslog_facility \"%s\"", syslog_facility_str);
3274 /* Expand pid_file_path */
3276 if (*pid_file_path != 0)
3278 s = expand_string(pid_file_path);
3280 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "failed to expand pid_file_path "
3281 "\"%s\": %s", pid_file_path, expand_string_message);
3285 /* Set default value of process_log_path */
3287 if (process_log_path == NULL || *process_log_path =='\0')
3288 process_log_path = string_sprintf("%s/exim-process.info", spool_directory);
3290 /* Compile the regex for matching a UUCP-style "From_" line in an incoming
3293 regex_From = regex_must_compile(uucp_from_pattern, FALSE, TRUE);
3295 /* Unpick the SMTP rate limiting options, if set */
3297 if (smtp_ratelimit_mail != NULL)
3299 unpick_ratelimit(smtp_ratelimit_mail, &smtp_rlm_threshold,
3300 &smtp_rlm_base, &smtp_rlm_factor, &smtp_rlm_limit);
3303 if (smtp_ratelimit_rcpt != NULL)
3305 unpick_ratelimit(smtp_ratelimit_rcpt, &smtp_rlr_threshold,
3306 &smtp_rlr_base, &smtp_rlr_factor, &smtp_rlr_limit);
3309 /* The qualify domains default to the primary host name */
3311 if (qualify_domain_sender == NULL)
3312 qualify_domain_sender = primary_hostname;
3313 if (qualify_domain_recipient == NULL)
3314 qualify_domain_recipient = qualify_domain_sender;
3316 /* Setting system_filter_user in the configuration sets the gid as well if a
3317 name is given, but a numerical value does not. */
3319 if (system_filter_uid_set && !system_filter_gid_set)
3321 struct passwd *pw = getpwuid(system_filter_uid);
3323 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "Failed to look up uid %ld",
3324 (long int)system_filter_uid);
3325 system_filter_gid = pw->pw_gid;
3326 system_filter_gid_set = TRUE;
3329 /* If the errors_reply_to field is set, check that it is syntactically valid
3330 and ensure it contains a domain. */
3332 if (errors_reply_to != NULL)
3335 int start, end, domain;
3336 uschar *recipient = parse_extract_address(errors_reply_to, &errmess,
3337 &start, &end, &domain, FALSE);
3339 if (recipient == NULL)
3340 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
3341 "error in errors_reply_to (%s): %s", errors_reply_to, errmess);
3344 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
3345 "errors_reply_to (%s) does not contain a domain", errors_reply_to);
3348 /* If smtp_accept_queue or smtp_accept_max_per_host is set, then
3349 smtp_accept_max must also be set. */
3351 if (smtp_accept_max == 0 &&
3352 (smtp_accept_queue > 0 || smtp_accept_max_per_host != NULL))
3353 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
3354 "smtp_accept_max must be set if smtp_accept_queue or "
3355 "smtp_accept_max_per_host is set");
3357 /* Set up the host number if anything is specified. It is an expanded string
3358 so that it can be computed from the host name, for example. We do this last
3359 so as to ensure that everything else is set up before the expansion. */
3361 if (host_number_string != NULL)
3365 uschar *s = expand_string(host_number_string);
3367 log_write(0, LOG_MAIN|LOG_PANIC_DIE,
3368 "failed to expand localhost_number \"%s\": %s",
3369 host_number_string, expand_string_message);
3370 n = Ustrtol(s, &end, 0);
3371 while (isspace(*end)) end++;
3373 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
3374 "localhost_number value is not a number: %s", s);
3375 if (n > LOCALHOST_MAX)
3376 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
3377 "localhost_number is greater than the maximum allowed value (%d)",
3383 /* If tls_verify_hosts is set, tls_verify_certificates must also be set */
3385 if ((tls_verify_hosts != NULL || tls_try_verify_hosts != NULL) &&
3386 tls_verify_certificates == NULL)
3387 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
3388 "tls_%sverify_hosts is set, but tls_verify_certificates is not set",
3389 (tls_verify_hosts != NULL)? "" : "try_");
3391 /* This also checks that the library linkage is working and we can call
3392 routines in it, so call even if tls_require_ciphers is unset */
3393 if (!tls_dropprivs_validate_require_cipher())
3396 /* Magic number: at time of writing, 1024 has been the long-standing value
3397 used by so many clients, and what Exim used to use always, that it makes
3398 sense to just min-clamp this max-clamp at that. */
3399 if (tls_dh_max_bits < 1024)
3400 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
3401 "tls_dh_max_bits is too small, must be at least 1024 for interop");
3403 /* If openssl_options is set, validate it */
3404 if (openssl_options != NULL)
3407 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
3408 "openssl_options is set but we're using GnuTLS");
3411 if (!(tls_openssl_options_parse(openssl_options, &dummy)))
3412 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
3413 "openssl_options parse error: %s", openssl_options);
3417 if (gnutls_require_kx || gnutls_require_mac || gnutls_require_proto)
3418 log_write(0, LOG_MAIN, "WARNING: main options"
3419 " gnutls_require_kx, gnutls_require_mac and gnutls_require_protocols"
3421 #endif /*SUPPORT_TLS*/
3426 /*************************************************
3427 * Initialize one driver *
3428 *************************************************/
3430 /* This is called once the driver's generic options, if any, have been read.
3431 We can now find the driver, set up defaults for the private options, and
3432 unset any "set" bits in the private options table (which might have been
3433 set by another incarnation of the same driver).
3436 d pointer to driver instance block, with generic
3438 drivers_available vector of available drivers
3439 size_of_info size of each block in drivers_available
3440 class class of driver, for error message
3442 Returns: pointer to the driver info block
3445 static driver_info *
3446 init_driver(driver_instance *d, driver_info *drivers_available,
3447 int size_of_info, uschar *class)
3451 for (dd = drivers_available; dd->driver_name[0] != 0;
3452 dd = (driver_info *)(((uschar *)dd) + size_of_info))
3454 if (Ustrcmp(d->driver_name, dd->driver_name) == 0)
3457 int len = dd->options_len;
3459 d->options_block = store_get(len);
3460 memcpy(d->options_block, dd->options_block, len);
3461 for (i = 0; i < *(dd->options_count); i++)
3462 dd->options[i].type &= ~opt_set;
3467 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
3468 "%s %s: cannot find %s driver \"%s\"", class, d->name, class, d->driver_name);
3470 return NULL; /* never obeyed */
3476 /*************************************************
3477 * Initialize driver list *
3478 *************************************************/
3480 /* This function is called for routers, transports, and authentication
3481 mechanisms. It reads the data from the current point in the configuration file
3482 up to the end of the section, and sets up a chain of instance blocks according
3483 to the file's contents. The file will already have been opened by a call to
3484 readconf_main, and must be left open for subsequent reading of further data.
3486 Any errors cause a panic crash. Note that the blocks with names driver_info and
3487 driver_instance must map the first portions of all the _info and _instance
3488 blocks for this shared code to work.
3491 class "router", "transport", or "authenticator"
3492 anchor &routers, &transports, &auths
3493 drivers_available available drivers
3494 size_of_info size of each info block
3495 instance_default points to default data for an instance
3496 instance_size size of instance block
3497 driver_optionlist generic option list
3498 driver_optionlist_count count of generic option list
3504 readconf_driver_init(
3506 driver_instance **anchor,
3507 driver_info *drivers_available,
3509 void *instance_default,
3511 optionlist *driver_optionlist,
3512 int driver_optionlist_count)
3514 driver_instance **p = anchor;
3515 driver_instance *d = NULL;
3518 while ((buffer = get_config_line()) != NULL)
3523 /* Read the first name on the line and test for the start of a new driver. A
3524 macro definition indicates the end of the previous driver. If this isn't the
3525 start of a new driver, the line will be re-read. */
3527 s = readconf_readname(name, sizeof(name), buffer);
3529 /* Handle macro definition, first finishing off the initialization of the
3530 previous driver, if any. */
3532 if (isupper(*name) && *s == '=')
3536 if (d->driver_name == NULL)
3537 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
3538 "no driver defined for %s \"%s\"", class, d->name);
3542 read_macro_assignment(buffer);
3546 /* If the line starts with a name terminated by a colon, we are at the
3547 start of the definition of a new driver. The rest of the line must be
3554 /* Finish off initializing the previous driver. */
3558 if (d->driver_name == NULL)
3559 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
3560 "no driver defined for %s \"%s\"", class, d->name);
3564 /* Check that we haven't already got a driver of this name */
3566 for (d = *anchor; d != NULL; d = d->next)
3567 if (Ustrcmp(name, d->name) == 0)
3568 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
3569 "there are two %ss called \"%s\"", class, name);
3571 /* Set up a new driver instance data block on the chain, with
3572 its default values installed. */
3574 d = store_get(instance_size);
3575 memcpy(d, instance_default, instance_size);
3578 d->name = string_copy(name);
3580 /* Clear out the "set" bits in the generic options */
3582 for (i = 0; i < driver_optionlist_count; i++)
3583 driver_optionlist[i].type &= ~opt_set;
3585 /* Check nothing more on this line, then do the next loop iteration. */
3587 while (isspace(*s)) s++;
3588 if (*s != 0) extra_chars_error(s, US"driver name ", name, US"");
3592 /* Not the start of a new driver. Give an error if we have not set up a
3593 current driver yet. */
3595 if (d == NULL) log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
3596 "%s name missing", class);
3598 /* First look to see if this is a generic option; if it is "driver",
3599 initialize the driver. If is it not a generic option, we can look for a
3600 private option provided that the driver has been previously set up. */
3602 if (readconf_handle_option(buffer, driver_optionlist,
3603 driver_optionlist_count, d, NULL))
3605 if (d->info == NULL && d->driver_name != NULL)
3606 init_driver(d, drivers_available, size_of_info, class);
3609 /* Handle private options - pass the generic block because some may
3610 live therein. A flag with each option indicates if it is in the public
3613 else if (d->info != NULL)
3615 readconf_handle_option(buffer, d->info->options,
3616 *(d->info->options_count), d, US"option \"%s\" unknown");
3619 /* The option is not generic and the driver name has not yet been given. */
3621 else log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "option \"%s\" unknown "
3622 "(\"driver\" must be specified before any private options)", name);
3625 /* Run the initialization function for the final driver. */
3629 if (d->driver_name == NULL)
3630 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
3631 "no driver defined for %s \"%s\"", class, d->name);
3638 /*************************************************
3639 * Check driver dependency *
3640 *************************************************/
3642 /* This function is passed a driver instance and a string. It checks whether
3643 any of the string options for the driver contains the given string as an
3647 d points to a driver instance block
3648 s the string to search for
3650 Returns: TRUE if a dependency is found
3654 readconf_depends(driver_instance *d, uschar *s)
3656 int count = *(d->info->options_count);
3660 for (ol = d->info->options; ol < d->info->options + count; ol++)
3662 void *options_block;
3664 int type = ol->type & opt_mask;
3665 if (type != opt_stringptr) continue;
3666 options_block = ((ol->type & opt_public) == 0)? d->options_block : (void *)d;
3667 value = *(uschar **)((uschar *)options_block + (long int)(ol->value));
3668 if (value != NULL && (ss = Ustrstr(value, s)) != NULL)
3670 if (ss <= value || (ss[-1] != '$' && ss[-1] != '{') ||
3671 isalnum(ss[Ustrlen(s)])) continue;
3672 DEBUG(D_transport) debug_printf("driver %s: \"%s\" option depends on %s\n",
3673 d->name, ol->name, s);
3678 DEBUG(D_transport) debug_printf("driver %s does not depend on %s\n", d->name, s);
3685 /*************************************************
3686 * Decode an error type for retries *
3687 *************************************************/
3689 /* This function is global because it is also called from the main
3690 program when testing retry information. It decodes strings such as "quota_7d"
3691 into numerical error codes.
3694 pp points to start of text
3695 p points past end of text
3696 basic_errno points to an int to receive the main error number
3697 more_errno points to an int to receive the secondary error data
3699 Returns: NULL if decoded correctly; else points to error text
3703 readconf_retry_error(const uschar *pp, const uschar *p,
3704 int *basic_errno, int *more_errno)
3707 const uschar *q = pp;
3708 while (q < p && *q != '_') q++;
3711 if (len == 5 && strncmpic(pp, US"quota", len) == 0)
3713 *basic_errno = ERRNO_EXIMQUOTA;
3714 if (q != p && (*more_errno = readconf_readtime(q+1, *p, FALSE)) < 0)
3715 return US"bad time value";
3718 else if (len == 7 && strncmpic(pp, US"refused", len) == 0)
3720 *basic_errno = ECONNREFUSED;
3723 if (strncmpic(q+1, US"MX", p-q-1) == 0) *more_errno = 'M';
3724 else if (strncmpic(q+1, US"A", p-q-1) == 0) *more_errno = 'A';
3725 else return US"A or MX expected after \"refused\"";
3729 else if (len == 7 && strncmpic(pp, US"timeout", len) == 0)
3731 *basic_errno = ETIMEDOUT;
3735 int xlen = p - q - 1;
3736 const uschar *x = q + 1;
3738 static uschar *extras[] =
3739 { US"A", US"MX", US"connect", US"connect_A", US"connect_MX" };
3740 static int values[] =
3741 { 'A', 'M', RTEF_CTOUT, RTEF_CTOUT|'A', RTEF_CTOUT|'M' };
3743 for (i = 0; i < sizeof(extras)/sizeof(uschar *); i++)
3744 if (strncmpic(x, extras[i], xlen) == 0)
3746 *more_errno = values[i];
3750 if (i >= sizeof(extras)/sizeof(uschar *))
3751 if (strncmpic(x, US"DNS", xlen) == 0)
3752 log_write(0, LOG_MAIN|LOG_PANIC, "\"timeout_dns\" is no longer "
3753 "available in retry rules (it has never worked) - treated as "
3756 return US"\"A\", \"MX\", or \"connect\" expected after \"timeout\"";
3760 else if (strncmpic(pp, US"mail_4", 6) == 0 ||
3761 strncmpic(pp, US"rcpt_4", 6) == 0 ||
3762 strncmpic(pp, US"data_4", 6) == 0)
3765 int x = 255; /* means "any 4xx code" */
3766 if (p != pp + 8) bad = TRUE; else
3768 int a = pp[6], b = pp[7];
3772 if (isdigit(b)) x += b - '0';
3773 else if (b == 'x') x += 100;
3776 else if (a != 'x' || b != 'x') bad = TRUE;
3780 return string_sprintf("%.4s_4 must be followed by xx, dx, or dd, where "
3781 "x is literal and d is any digit", pp);
3783 *basic_errno = *pp == 'm' ? ERRNO_MAIL4XX :
3784 *pp == 'r' ? ERRNO_RCPT4XX : ERRNO_DATA4XX;
3785 *more_errno = x << 8;
3788 else if (len == 4 && strncmpic(pp, US"auth", len) == 0 &&
3789 strncmpic(q+1, US"failed", p-q-1) == 0)
3790 *basic_errno = ERRNO_AUTHFAIL;
3792 else if (strncmpic(pp, US"lost_connection", p - pp) == 0)
3793 *basic_errno = ERRNO_SMTPCLOSED;
3795 else if (strncmpic(pp, US"tls_required", p - pp) == 0)
3796 *basic_errno = ERRNO_TLSREQUIRED;
3798 else if (strncmpic(pp, US"lookup", p - pp) == 0)
3799 *basic_errno = ERRNO_UNKNOWNHOST;
3801 else if (len != 1 || Ustrncmp(pp, "*", 1) != 0)
3802 return string_sprintf("unknown or malformed retry error \"%.*s\"", (int) (p-pp), pp);
3810 /*************************************************
3811 * Read retry information *
3812 *************************************************/
3814 /* Each line of retry information contains:
3816 . A domain name pattern or an address pattern;
3818 . An error name, possibly with additional data, or *;
3820 . An optional sequence of retry items, each consisting of an identifying
3821 letter, a cutoff time, and optional parameters.
3823 All this is decoded and placed into a control block. */
3826 /* Subroutine to read an argument, preceded by a comma and terminated
3827 by comma, semicolon, whitespace, or newline. The types are: 0 = time value,
3828 1 = fixed point number (returned *1000).
3831 paddr pointer to pointer to current character; updated
3832 type 0 => read a time; 1 => read a fixed point number
3834 Returns: time in seconds or fixed point number * 1000
3838 retry_arg(const uschar **paddr, int type)
3840 const uschar *p = *paddr;
3843 if (*p++ != ',') log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "comma expected");
3845 while (isspace(*p)) p++;
3847 while (isalnum(*p) || (type == 1 && *p == '.')) p++;
3849 if (*p != 0 && !isspace(*p) && *p != ',' && *p != ';')
3850 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "comma or semicolon expected");
3855 case 0: return readconf_readtime(pp, *p, FALSE);
3856 case 1: return readconf_readfixed(pp, *p);
3858 return 0; /* Keep picky compilers happy */
3861 /* The function proper */
3864 readconf_retries(void)
3866 retry_config **chain = &retries;
3870 while ((p = get_config_line()))
3872 retry_rule **rchain;
3876 next = store_get(sizeof(retry_config));
3879 chain = &(next->next);
3880 next->basic_errno = next->more_errno = 0;
3881 next->senders = NULL;
3883 rchain = &(next->rules);
3885 next->pattern = string_dequote(&p);
3886 while (isspace(*p)) p++;
3888 while (mac_isgraph(*p)) p++;
3889 if (p - pp <= 0) log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
3890 "missing error type in retry rule");
3892 /* Test error names for things we understand. */
3894 if ((error = readconf_retry_error(pp, p, &next->basic_errno,
3895 &next->more_errno)))
3896 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "%s", error);
3898 /* There may be an optional address list of senders to be used as another
3899 constraint on the rule. This was added later, so the syntax is a bit of a
3900 fudge. Anything that is not a retry rule starting "F," or "G," is treated as
3903 while (isspace(*p)) p++;
3904 if (Ustrncmp(p, "senders", 7) == 0)
3907 while (isspace(*p)) p++;
3908 if (*p++ != '=') log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
3909 "\"=\" expected after \"senders\" in retry rule");
3910 while (isspace(*p)) p++;
3911 next->senders = string_dequote(&p);
3914 /* Now the retry rules. Keep the maximum timeout encountered. */
3916 while (isspace(*p)) p++;
3920 retry_rule *rule = store_get(sizeof(retry_rule));
3922 rchain = &(rule->next);
3924 rule->rule = toupper(*p++);
3925 rule->timeout = retry_arg(&p, 0);
3926 if (rule->timeout > retry_maximum_timeout)
3927 retry_maximum_timeout = rule->timeout;
3931 case 'F': /* Fixed interval */
3932 rule->p1 = retry_arg(&p, 0);
3935 case 'G': /* Geometrically increasing intervals */
3936 case 'H': /* Ditto, but with randomness */
3937 rule->p1 = retry_arg(&p, 0);
3938 rule->p2 = retry_arg(&p, 1);
3942 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "unknown retry rule letter");
3946 if (rule->timeout <= 0 || rule->p1 <= 0 ||
3947 (rule->rule != 'F' && rule->p2 < 1000))
3948 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
3949 "bad parameters for retry rule");
3951 while (isspace(*p)) p++;
3955 while (isspace(*p)) p++;
3958 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "semicolon expected");
3965 /*************************************************
3966 * Initialize authenticators *
3967 *************************************************/
3969 /* Read the authenticators section of the configuration file.
3978 auth_instance *au, *bu;
3979 readconf_driver_init(US"authenticator",
3980 (driver_instance **)(&auths), /* chain anchor */
3981 (driver_info *)auths_available, /* available drivers */
3982 sizeof(auth_info), /* size of info block */
3983 &auth_defaults, /* default values for generic options */
3984 sizeof(auth_instance), /* size of instance block */
3985 optionlist_auths, /* generic options */
3986 optionlist_auths_size);
3988 for (au = auths; au != NULL; au = au->next)
3990 if (au->public_name == NULL)
3991 log_write(0, LOG_PANIC_DIE|LOG_CONFIG, "no public name specified for "
3992 "the %s authenticator", au->name);
3993 for (bu = au->next; bu != NULL; bu = bu->next)
3995 if (strcmpic(au->public_name, bu->public_name) == 0)
3997 if ((au->client && bu->client) || (au->server && bu->server))
3998 log_write(0, LOG_PANIC_DIE|LOG_CONFIG, "two %s authenticators "
3999 "(%s and %s) have the same public name (%s)",
4000 (au->client)? US"client" : US"server", au->name, bu->name,
4010 /*************************************************
4011 * Read ACL information *
4012 *************************************************/
4014 /* If this run of Exim is not doing something that involves receiving a
4015 message, we can just skip over the ACL information. No need to parse it.
4017 First, we have a function for acl_read() to call back to get the next line. We
4018 need to remember the line we passed, because at the end it will contain the
4019 name of the next ACL. */
4021 static uschar *acl_line;
4026 acl_line = get_config_line();
4031 /* Now the main function:
4042 /* Read each ACL and add it into the tree. Macro (re)definitions are allowed
4045 acl_line = get_config_line();
4047 while(acl_line != NULL)
4053 p = readconf_readname(name, sizeof(name), acl_line);
4054 if (isupper(*name) && *p == '=')
4056 read_macro_assignment(acl_line);
4057 acl_line = get_config_line();
4061 if (*p != ':' || name[0] == 0)
4062 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "missing or malformed ACL name");
4064 node = store_get(sizeof(tree_node) + Ustrlen(name));
4065 Ustrcpy(node->name, name);
4066 if (!tree_insertnode(&acl_anchor, node))
4067 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
4068 "there are two ACLs called \"%s\"", name);
4070 node->data.ptr = acl_read(acl_callback, &error);
4072 if (node->data.ptr == NULL && error != NULL)
4073 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "error in ACL: %s", error);
4079 /*************************************************
4080 * Read configuration for local_scan() *
4081 *************************************************/
4083 /* This function is called after "begin local_scan" is encountered in the
4084 configuration file. If the local_scan() function allows for configuration
4085 options, we can process them. Otherwise, we expire in a panic.
4092 local_scan_init(void)
4094 #ifndef LOCAL_SCAN_HAS_OPTIONS
4095 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "local_scan() options not supported: "
4096 "(LOCAL_SCAN_HAS_OPTIONS not defined in Local/Makefile)");
4100 while ((p = get_config_line()) != NULL)
4102 (void) readconf_handle_option(p, local_scan_options, local_scan_options_count,
4103 NULL, US"local_scan option \"%s\" unknown");
4110 /*************************************************
4111 * Read rest of configuration (after main) *
4112 *************************************************/
4114 /* This function reads the rest of the runtime configuration, after the main
4115 configuration. It is called only when actually needed. Each subsequent section
4116 of the configuration starts with a line of the form
4120 where the name is "routers", "transports", etc. A section is terminated by
4121 hitting the next "begin" line, and the next name is left in next_section.
4122 Because it may confuse people as to whether the names are singular or plural,
4123 we add "s" if it's missing. There is always enough room in next_section for
4124 this. This function is basically just a switch.
4130 static uschar *section_list[] = {
4144 while(next_section[0] != 0)
4148 int last = sizeof(section_list) / sizeof(uschar *);
4150 int n = Ustrlen(next_section);
4152 if (tolower(next_section[n-1]) != 's') Ustrcpy(next_section+n, "s");
4156 int c = strcmpic(next_section, section_list[mid]);
4158 if (c > 0) first = mid + 1; else last = mid;
4160 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
4161 "\"%.*s\" is not a known configuration section name", n, next_section);
4162 mid = (last + first)/2;
4166 if (((had ^= bit) & bit) == 0)
4167 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
4168 "\"%.*s\" section is repeated in the configuration file", n,
4173 case 0: readconf_acl(); break;
4174 case 1: auths_init(); break;
4175 case 2: local_scan_init(); break;
4176 case 3: readconf_retries(); break;
4177 case 4: readconf_rewrites(); break;
4178 case 5: route_init(); break;
4179 case 6: transport_init(); break;
4183 (void)fclose(config_file);
4188 /* End of readconf.c */