1 /*************************************************
2 * Exim - an Internet mail transport agent *
3 *************************************************/
5 /* Copyright (c) University of Cambridge 1995 - 2015 */
6 /* See the file NOTICE for conditions of use and distribution. */
8 /* Functions for reading the configuration file, and for displaying
9 overall configuration values. Thanks to Brian Candler for the original
10 implementation of the conditional .ifdef etc. */
14 static void fn_smtp_receive_timeout(const uschar * name, const uschar * str);
17 #define CSTATE_STACK_SIZE 10
20 /* Structure for chain (stack) of .included files */
22 typedef struct config_file_item {
23 struct config_file_item *next;
29 /* Structure of table of conditional words and their state transitions */
31 typedef struct cond_item {
39 /* Structure of table of syslog facility names and values */
41 typedef struct syslog_fac_item {
47 /* Static variables */
49 static config_file_item *config_file_stack = NULL; /* For includes */
51 static uschar *syslog_facility_str = NULL;
52 static uschar next_section[24];
53 static uschar time_buffer[24];
55 /* State variables for conditional loading (.ifdef / .else / .endif) */
57 static int cstate = 0;
58 static int cstate_stack_ptr = -1;
59 static int cstate_stack[CSTATE_STACK_SIZE];
61 /* Table of state transitions for handling conditional inclusions. There are
62 four possible state transitions:
66 .elifdef true (or .else)
69 .endif just causes the previous cstate to be popped off the stack */
71 static int next_cstate[3][4] =
73 /* State 0: reading from file, or reading until next .else or .endif */
75 /* State 1: condition failed, skipping until next .else or .endif */
77 /* State 2: skipping until .endif */
81 /* Table of conditionals and the states to set. For each name, there are four
82 values: the length of the name (to save computing it each time), the state to
83 set if a macro was found in the line, the state to set if a macro was not found
84 in the line, and a stack manipulation setting which is:
86 -1 pull state value off the stack
87 0 don't alter the stack
88 +1 push value onto stack, before setting new state
91 static cond_item cond_list[] = {
92 { US"ifdef", 5, 0, 1, 1 },
93 { US"ifndef", 6, 1, 0, 1 },
94 { US"elifdef", 7, 2, 3, 0 },
95 { US"elifndef", 8, 3, 2, 0 },
96 { US"else", 4, 2, 2, 0 },
97 { US"endif", 5, 0, 0, -1 }
100 static int cond_list_size = sizeof(cond_list)/sizeof(cond_item);
102 /* Table of syslog facility names and their values */
104 static syslog_fac_item syslog_list[] = {
105 { US"mail", LOG_MAIL },
106 { US"user", LOG_USER },
107 { US"news", LOG_NEWS },
108 { US"uucp", LOG_UUCP },
109 { US"local0", LOG_LOCAL0 },
110 { US"local1", LOG_LOCAL1 },
111 { US"local2", LOG_LOCAL2 },
112 { US"local3", LOG_LOCAL3 },
113 { US"local4", LOG_LOCAL4 },
114 { US"local5", LOG_LOCAL5 },
115 { US"local6", LOG_LOCAL6 },
116 { US"local7", LOG_LOCAL7 },
117 { US"daemon", LOG_DAEMON }
120 static int syslog_list_size = sizeof(syslog_list)/sizeof(syslog_fac_item);
125 /*************************************************
126 * Main configuration options *
127 *************************************************/
129 /* The list of options that can be set in the main configuration file. This
130 must be in alphabetic order because it is searched by binary chop. */
132 static optionlist optionlist_config[] = {
133 { "*set_exim_group", opt_bool|opt_hidden, &exim_gid_set },
134 { "*set_exim_user", opt_bool|opt_hidden, &exim_uid_set },
135 { "*set_system_filter_group", opt_bool|opt_hidden, &system_filter_gid_set },
136 { "*set_system_filter_user", opt_bool|opt_hidden, &system_filter_uid_set },
137 { "accept_8bitmime", opt_bool, &accept_8bitmime },
138 { "acl_not_smtp", opt_stringptr, &acl_not_smtp },
139 #ifdef WITH_CONTENT_SCAN
140 { "acl_not_smtp_mime", opt_stringptr, &acl_not_smtp_mime },
142 { "acl_not_smtp_start", opt_stringptr, &acl_not_smtp_start },
143 { "acl_smtp_auth", opt_stringptr, &acl_smtp_auth },
144 { "acl_smtp_connect", opt_stringptr, &acl_smtp_connect },
145 { "acl_smtp_data", opt_stringptr, &acl_smtp_data },
147 { "acl_smtp_data_prdr", opt_stringptr, &acl_smtp_data_prdr },
150 { "acl_smtp_dkim", opt_stringptr, &acl_smtp_dkim },
152 { "acl_smtp_etrn", opt_stringptr, &acl_smtp_etrn },
153 { "acl_smtp_expn", opt_stringptr, &acl_smtp_expn },
154 { "acl_smtp_helo", opt_stringptr, &acl_smtp_helo },
155 { "acl_smtp_mail", opt_stringptr, &acl_smtp_mail },
156 { "acl_smtp_mailauth", opt_stringptr, &acl_smtp_mailauth },
157 #ifdef WITH_CONTENT_SCAN
158 { "acl_smtp_mime", opt_stringptr, &acl_smtp_mime },
160 { "acl_smtp_notquit", opt_stringptr, &acl_smtp_notquit },
161 { "acl_smtp_predata", opt_stringptr, &acl_smtp_predata },
162 { "acl_smtp_quit", opt_stringptr, &acl_smtp_quit },
163 { "acl_smtp_rcpt", opt_stringptr, &acl_smtp_rcpt },
165 { "acl_smtp_starttls", opt_stringptr, &acl_smtp_starttls },
167 { "acl_smtp_vrfy", opt_stringptr, &acl_smtp_vrfy },
168 { "add_environment", opt_stringptr, &add_environment },
169 { "admin_groups", opt_gidlist, &admin_groups },
170 { "allow_domain_literals", opt_bool, &allow_domain_literals },
171 { "allow_mx_to_ip", opt_bool, &allow_mx_to_ip },
172 { "allow_utf8_domains", opt_bool, &allow_utf8_domains },
173 { "auth_advertise_hosts", opt_stringptr, &auth_advertise_hosts },
174 { "auto_thaw", opt_time, &auto_thaw },
175 #ifdef WITH_CONTENT_SCAN
176 { "av_scanner", opt_stringptr, &av_scanner },
178 { "bi_command", opt_stringptr, &bi_command },
179 #ifdef EXPERIMENTAL_BRIGHTMAIL
180 { "bmi_config_file", opt_stringptr, &bmi_config_file },
182 { "bounce_message_file", opt_stringptr, &bounce_message_file },
183 { "bounce_message_text", opt_stringptr, &bounce_message_text },
184 { "bounce_return_body", opt_bool, &bounce_return_body },
185 { "bounce_return_message", opt_bool, &bounce_return_message },
186 { "bounce_return_size_limit", opt_mkint, &bounce_return_size_limit },
187 { "bounce_sender_authentication",opt_stringptr,&bounce_sender_authentication },
188 { "callout_domain_negative_expire", opt_time, &callout_cache_domain_negative_expire },
189 { "callout_domain_positive_expire", opt_time, &callout_cache_domain_positive_expire },
190 { "callout_negative_expire", opt_time, &callout_cache_negative_expire },
191 { "callout_positive_expire", opt_time, &callout_cache_positive_expire },
192 { "callout_random_local_part",opt_stringptr, &callout_random_local_part },
193 { "check_log_inodes", opt_int, &check_log_inodes },
194 { "check_log_space", opt_Kint, &check_log_space },
195 { "check_rfc2047_length", opt_bool, &check_rfc2047_length },
196 { "check_spool_inodes", opt_int, &check_spool_inodes },
197 { "check_spool_space", opt_Kint, &check_spool_space },
198 { "daemon_smtp_port", opt_stringptr|opt_hidden, &daemon_smtp_port },
199 { "daemon_smtp_ports", opt_stringptr, &daemon_smtp_port },
200 { "daemon_startup_retries", opt_int, &daemon_startup_retries },
201 { "daemon_startup_sleep", opt_time, &daemon_startup_sleep },
202 #ifdef EXPERIMENTAL_DCC
203 { "dcc_direct_add_header", opt_bool, &dcc_direct_add_header },
204 { "dccifd_address", opt_stringptr, &dccifd_address },
205 { "dccifd_options", opt_stringptr, &dccifd_options },
207 { "delay_warning", opt_timelist, &delay_warning },
208 { "delay_warning_condition", opt_stringptr, &delay_warning_condition },
209 { "deliver_drop_privilege", opt_bool, &deliver_drop_privilege },
210 { "deliver_queue_load_max", opt_fixed, &deliver_queue_load_max },
211 { "delivery_date_remove", opt_bool, &delivery_date_remove },
212 #ifdef ENABLE_DISABLE_FSYNC
213 { "disable_fsync", opt_bool, &disable_fsync },
215 { "disable_ipv6", opt_bool, &disable_ipv6 },
217 { "dkim_verify_signers", opt_stringptr, &dkim_verify_signers },
219 #ifdef EXPERIMENTAL_DMARC
220 { "dmarc_forensic_sender", opt_stringptr, &dmarc_forensic_sender },
221 { "dmarc_history_file", opt_stringptr, &dmarc_history_file },
222 { "dmarc_tld_file", opt_stringptr, &dmarc_tld_file },
224 { "dns_again_means_nonexist", opt_stringptr, &dns_again_means_nonexist },
225 { "dns_check_names_pattern", opt_stringptr, &check_dns_names_pattern },
226 { "dns_csa_search_limit", opt_int, &dns_csa_search_limit },
227 { "dns_csa_use_reverse", opt_bool, &dns_csa_use_reverse },
228 { "dns_dnssec_ok", opt_int, &dns_dnssec_ok },
229 { "dns_ipv4_lookup", opt_stringptr, &dns_ipv4_lookup },
230 { "dns_retrans", opt_time, &dns_retrans },
231 { "dns_retry", opt_int, &dns_retry },
232 { "dns_trust_aa", opt_stringptr, &dns_trust_aa },
233 { "dns_use_edns0", opt_int, &dns_use_edns0 },
234 /* This option is now a no-op, retained for compability */
235 { "drop_cr", opt_bool, &drop_cr },
236 /*********************************************************/
237 { "dsn_advertise_hosts", opt_stringptr, &dsn_advertise_hosts },
238 { "dsn_from", opt_stringptr, &dsn_from },
239 { "envelope_to_remove", opt_bool, &envelope_to_remove },
240 { "errors_copy", opt_stringptr, &errors_copy },
241 { "errors_reply_to", opt_stringptr, &errors_reply_to },
242 #ifdef EXPERIMENTAL_EVENT
243 { "event_action", opt_stringptr, &event_action },
245 { "exim_group", opt_gid, &exim_gid },
246 { "exim_path", opt_stringptr, &exim_path },
247 { "exim_user", opt_uid, &exim_uid },
248 { "extra_local_interfaces", opt_stringptr, &extra_local_interfaces },
249 { "extract_addresses_remove_arguments", opt_bool, &extract_addresses_remove_arguments },
250 { "finduser_retries", opt_int, &finduser_retries },
251 { "freeze_tell", opt_stringptr, &freeze_tell },
252 { "gecos_name", opt_stringptr, &gecos_name },
253 { "gecos_pattern", opt_stringptr, &gecos_pattern },
255 { "gnutls_allow_auto_pkcs11", opt_bool, &gnutls_allow_auto_pkcs11 },
256 { "gnutls_compat_mode", opt_bool, &gnutls_compat_mode },
257 /* These three gnutls_require_* options stopped working in Exim 4.80 */
258 /* From 4.83 we log a warning; a future relase will remove them */
259 { "gnutls_require_kx", opt_stringptr, &gnutls_require_kx },
260 { "gnutls_require_mac", opt_stringptr, &gnutls_require_mac },
261 { "gnutls_require_protocols", opt_stringptr, &gnutls_require_proto },
263 { "header_line_maxsize", opt_int, &header_line_maxsize },
264 { "header_maxsize", opt_int, &header_maxsize },
265 { "headers_charset", opt_stringptr, &headers_charset },
266 { "helo_accept_junk_hosts", opt_stringptr, &helo_accept_junk_hosts },
267 { "helo_allow_chars", opt_stringptr, &helo_allow_chars },
268 { "helo_lookup_domains", opt_stringptr, &helo_lookup_domains },
269 { "helo_try_verify_hosts", opt_stringptr, &helo_try_verify_hosts },
270 { "helo_verify_hosts", opt_stringptr, &helo_verify_hosts },
271 { "hold_domains", opt_stringptr, &hold_domains },
272 { "host_lookup", opt_stringptr, &host_lookup },
273 { "host_lookup_order", opt_stringptr, &host_lookup_order },
274 { "host_reject_connection", opt_stringptr, &host_reject_connection },
275 { "hosts_connection_nolog", opt_stringptr, &hosts_connection_nolog },
276 { "hosts_treat_as_local", opt_stringptr, &hosts_treat_as_local },
278 { "ibase_servers", opt_stringptr, &ibase_servers },
280 { "ignore_bounce_errors_after", opt_time, &ignore_bounce_errors_after },
281 { "ignore_fromline_hosts", opt_stringptr, &ignore_fromline_hosts },
282 { "ignore_fromline_local", opt_bool, &ignore_fromline_local },
283 { "keep_environment", opt_stringptr, &keep_environment },
284 { "keep_malformed", opt_time, &keep_malformed },
286 { "ldap_ca_cert_dir", opt_stringptr, &eldap_ca_cert_dir },
287 { "ldap_ca_cert_file", opt_stringptr, &eldap_ca_cert_file },
288 { "ldap_cert_file", opt_stringptr, &eldap_cert_file },
289 { "ldap_cert_key", opt_stringptr, &eldap_cert_key },
290 { "ldap_cipher_suite", opt_stringptr, &eldap_cipher_suite },
291 { "ldap_default_servers", opt_stringptr, &eldap_default_servers },
292 { "ldap_require_cert", opt_stringptr, &eldap_require_cert },
293 { "ldap_start_tls", opt_bool, &eldap_start_tls },
294 { "ldap_version", opt_int, &eldap_version },
296 { "local_from_check", opt_bool, &local_from_check },
297 { "local_from_prefix", opt_stringptr, &local_from_prefix },
298 { "local_from_suffix", opt_stringptr, &local_from_suffix },
299 { "local_interfaces", opt_stringptr, &local_interfaces },
300 { "local_scan_timeout", opt_time, &local_scan_timeout },
301 { "local_sender_retain", opt_bool, &local_sender_retain },
302 { "localhost_number", opt_stringptr, &host_number_string },
303 { "log_file_path", opt_stringptr, &log_file_path },
304 { "log_selector", opt_stringptr, &log_selector_string },
305 { "log_timezone", opt_bool, &log_timezone },
306 { "lookup_open_max", opt_int, &lookup_open_max },
307 { "max_username_length", opt_int, &max_username_length },
308 { "message_body_newlines", opt_bool, &message_body_newlines },
309 { "message_body_visible", opt_mkint, &message_body_visible },
310 { "message_id_header_domain", opt_stringptr, &message_id_domain },
311 { "message_id_header_text", opt_stringptr, &message_id_text },
312 { "message_logs", opt_bool, &message_logs },
313 { "message_size_limit", opt_stringptr, &message_size_limit },
314 #ifdef SUPPORT_MOVE_FROZEN_MESSAGES
315 { "move_frozen_messages", opt_bool, &move_frozen_messages },
317 { "mua_wrapper", opt_bool, &mua_wrapper },
319 { "mysql_servers", opt_stringptr, &mysql_servers },
321 { "never_users", opt_uidlist, &never_users },
323 { "openssl_options", opt_stringptr, &openssl_options },
326 { "oracle_servers", opt_stringptr, &oracle_servers },
328 { "percent_hack_domains", opt_stringptr, &percent_hack_domains },
330 { "perl_at_start", opt_bool, &opt_perl_at_start },
331 { "perl_startup", opt_stringptr, &opt_perl_startup },
334 { "pgsql_servers", opt_stringptr, &pgsql_servers },
336 { "pid_file_path", opt_stringptr, &pid_file_path },
337 { "pipelining_advertise_hosts", opt_stringptr, &pipelining_advertise_hosts },
339 { "prdr_enable", opt_bool, &prdr_enable },
341 { "preserve_message_logs", opt_bool, &preserve_message_logs },
342 { "primary_hostname", opt_stringptr, &primary_hostname },
343 { "print_topbitchars", opt_bool, &print_topbitchars },
344 { "process_log_path", opt_stringptr, &process_log_path },
345 { "prod_requires_admin", opt_bool, &prod_requires_admin },
346 #ifdef EXPERIMENTAL_PROXY
347 { "proxy_required_hosts", opt_stringptr, &proxy_required_hosts },
349 { "qualify_domain", opt_stringptr, &qualify_domain_sender },
350 { "qualify_recipient", opt_stringptr, &qualify_domain_recipient },
351 { "queue_domains", opt_stringptr, &queue_domains },
352 { "queue_list_requires_admin",opt_bool, &queue_list_requires_admin },
353 { "queue_only", opt_bool, &queue_only },
354 { "queue_only_file", opt_stringptr, &queue_only_file },
355 { "queue_only_load", opt_fixed, &queue_only_load },
356 { "queue_only_load_latch", opt_bool, &queue_only_load_latch },
357 { "queue_only_override", opt_bool, &queue_only_override },
358 { "queue_run_in_order", opt_bool, &queue_run_in_order },
359 { "queue_run_max", opt_int, &queue_run_max },
360 { "queue_smtp_domains", opt_stringptr, &queue_smtp_domains },
361 { "receive_timeout", opt_time, &receive_timeout },
362 { "received_header_text", opt_stringptr, &received_header_text },
363 { "received_headers_max", opt_int, &received_headers_max },
364 { "recipient_unqualified_hosts", opt_stringptr, &recipient_unqualified_hosts },
365 { "recipients_max", opt_int, &recipients_max },
366 { "recipients_max_reject", opt_bool, &recipients_max_reject },
367 #ifdef EXPERIMENTAL_REDIS
368 { "redis_servers", opt_stringptr, &redis_servers },
370 { "remote_max_parallel", opt_int, &remote_max_parallel },
371 { "remote_sort_domains", opt_stringptr, &remote_sort_domains },
372 { "retry_data_expire", opt_time, &retry_data_expire },
373 { "retry_interval_max", opt_time, &retry_interval_max },
374 { "return_path_remove", opt_bool, &return_path_remove },
375 { "return_size_limit", opt_mkint|opt_hidden, &bounce_return_size_limit },
376 { "rfc1413_hosts", opt_stringptr, &rfc1413_hosts },
377 { "rfc1413_query_timeout", opt_time, &rfc1413_query_timeout },
378 { "sender_unqualified_hosts", opt_stringptr, &sender_unqualified_hosts },
379 { "slow_lookup_log", opt_int, &slow_lookup_log },
380 { "smtp_accept_keepalive", opt_bool, &smtp_accept_keepalive },
381 { "smtp_accept_max", opt_int, &smtp_accept_max },
382 { "smtp_accept_max_nonmail", opt_int, &smtp_accept_max_nonmail },
383 { "smtp_accept_max_nonmail_hosts", opt_stringptr, &smtp_accept_max_nonmail_hosts },
384 { "smtp_accept_max_per_connection", opt_int, &smtp_accept_max_per_connection },
385 { "smtp_accept_max_per_host", opt_stringptr, &smtp_accept_max_per_host },
386 { "smtp_accept_queue", opt_int, &smtp_accept_queue },
387 { "smtp_accept_queue_per_connection", opt_int, &smtp_accept_queue_per_connection },
388 { "smtp_accept_reserve", opt_int, &smtp_accept_reserve },
389 { "smtp_active_hostname", opt_stringptr, &raw_active_hostname },
390 { "smtp_banner", opt_stringptr, &smtp_banner },
391 { "smtp_check_spool_space", opt_bool, &smtp_check_spool_space },
392 { "smtp_connect_backlog", opt_int, &smtp_connect_backlog },
393 { "smtp_enforce_sync", opt_bool, &smtp_enforce_sync },
394 { "smtp_etrn_command", opt_stringptr, &smtp_etrn_command },
395 { "smtp_etrn_serialize", opt_bool, &smtp_etrn_serialize },
396 { "smtp_load_reserve", opt_fixed, &smtp_load_reserve },
397 { "smtp_max_synprot_errors", opt_int, &smtp_max_synprot_errors },
398 { "smtp_max_unknown_commands",opt_int, &smtp_max_unknown_commands },
399 { "smtp_ratelimit_hosts", opt_stringptr, &smtp_ratelimit_hosts },
400 { "smtp_ratelimit_mail", opt_stringptr, &smtp_ratelimit_mail },
401 { "smtp_ratelimit_rcpt", opt_stringptr, &smtp_ratelimit_rcpt },
402 { "smtp_receive_timeout", opt_func, &fn_smtp_receive_timeout },
403 { "smtp_reserve_hosts", opt_stringptr, &smtp_reserve_hosts },
404 { "smtp_return_error_details",opt_bool, &smtp_return_error_details },
405 #ifdef EXPERIMENTAL_INTERNATIONAL
406 { "smtputf8_advertise_hosts", opt_stringptr, &smtputf8_advertise_hosts },
408 #ifdef WITH_CONTENT_SCAN
409 { "spamd_address", opt_stringptr, &spamd_address },
411 #ifdef EXPERIMENTAL_SPF
412 { "spf_guess", opt_stringptr, &spf_guess },
414 { "split_spool_directory", opt_bool, &split_spool_directory },
415 { "spool_directory", opt_stringptr, &spool_directory },
417 { "sqlite_lock_timeout", opt_int, &sqlite_lock_timeout },
419 #ifdef EXPERIMENTAL_SRS
420 { "srs_config", opt_stringptr, &srs_config },
421 { "srs_hashlength", opt_int, &srs_hashlength },
422 { "srs_hashmin", opt_int, &srs_hashmin },
423 { "srs_maxage", opt_int, &srs_maxage },
424 { "srs_secrets", opt_stringptr, &srs_secrets },
425 { "srs_usehash", opt_bool, &srs_usehash },
426 { "srs_usetimestamp", opt_bool, &srs_usetimestamp },
428 { "strict_acl_vars", opt_bool, &strict_acl_vars },
429 { "strip_excess_angle_brackets", opt_bool, &strip_excess_angle_brackets },
430 { "strip_trailing_dot", opt_bool, &strip_trailing_dot },
431 { "syslog_duplication", opt_bool, &syslog_duplication },
432 { "syslog_facility", opt_stringptr, &syslog_facility_str },
433 { "syslog_processname", opt_stringptr, &syslog_processname },
434 { "syslog_timestamp", opt_bool, &syslog_timestamp },
435 { "system_filter", opt_stringptr, &system_filter },
436 { "system_filter_directory_transport", opt_stringptr,&system_filter_directory_transport },
437 { "system_filter_file_transport",opt_stringptr,&system_filter_file_transport },
438 { "system_filter_group", opt_gid, &system_filter_gid },
439 { "system_filter_pipe_transport",opt_stringptr,&system_filter_pipe_transport },
440 { "system_filter_reply_transport",opt_stringptr,&system_filter_reply_transport },
441 { "system_filter_user", opt_uid, &system_filter_uid },
442 { "tcp_nodelay", opt_bool, &tcp_nodelay },
443 #ifdef USE_TCP_WRAPPERS
444 { "tcp_wrappers_daemon_name", opt_stringptr, &tcp_wrappers_daemon_name },
446 { "timeout_frozen_after", opt_time, &timeout_frozen_after },
447 { "timezone", opt_stringptr, &timezone_string },
449 { "tls_advertise_hosts", opt_stringptr, &tls_advertise_hosts },
450 { "tls_certificate", opt_stringptr, &tls_certificate },
451 { "tls_crl", opt_stringptr, &tls_crl },
452 { "tls_dh_max_bits", opt_int, &tls_dh_max_bits },
453 { "tls_dhparam", opt_stringptr, &tls_dhparam },
454 { "tls_eccurve", opt_stringptr, &tls_eccurve },
455 # ifndef DISABLE_OCSP
456 { "tls_ocsp_file", opt_stringptr, &tls_ocsp_file },
458 { "tls_on_connect_ports", opt_stringptr, &tls_in.on_connect_ports },
459 { "tls_privatekey", opt_stringptr, &tls_privatekey },
460 { "tls_remember_esmtp", opt_bool, &tls_remember_esmtp },
461 { "tls_require_ciphers", opt_stringptr, &tls_require_ciphers },
462 { "tls_try_verify_hosts", opt_stringptr, &tls_try_verify_hosts },
463 { "tls_verify_certificates", opt_stringptr, &tls_verify_certificates },
464 { "tls_verify_hosts", opt_stringptr, &tls_verify_hosts },
466 { "trusted_groups", opt_gidlist, &trusted_groups },
467 { "trusted_users", opt_uidlist, &trusted_users },
468 { "unknown_login", opt_stringptr, &unknown_login },
469 { "unknown_username", opt_stringptr, &unknown_username },
470 { "untrusted_set_sender", opt_stringptr, &untrusted_set_sender },
471 { "uucp_from_pattern", opt_stringptr, &uucp_from_pattern },
472 { "uucp_from_sender", opt_stringptr, &uucp_from_sender },
473 { "warn_message_file", opt_stringptr, &warn_message_file },
474 { "write_rejectlog", opt_bool, &write_rejectlog }
477 static int optionlist_config_size =
478 sizeof(optionlist_config)/sizeof(optionlist);
482 /*************************************************
483 * Find the name of an option *
484 *************************************************/
486 /* This function is to aid debugging. Various functions take arguments that are
487 pointer variables in the options table or in option tables for various drivers.
488 For debugging output, it is useful to be able to find the name of the option
489 which is currently being processed. This function finds it, if it exists, by
490 searching the table(s).
492 Arguments: a value that is presumed to be in the table above
493 Returns: the option name, or an empty string
497 readconf_find_option(void *p)
501 transport_instance *t;
503 for (i = 0; i < optionlist_config_size; i++)
504 if (p == optionlist_config[i].value) return US optionlist_config[i].name;
506 for (r = routers; r != NULL; r = r->next)
508 router_info *ri = r->info;
509 for (i = 0; i < *ri->options_count; i++)
511 if ((ri->options[i].type & opt_mask) != opt_stringptr) continue;
512 if (p == (char *)(r->options_block) + (long int)(ri->options[i].value))
513 return US ri->options[i].name;
517 for (t = transports; t != NULL; t = t->next)
519 transport_info *ti = t->info;
520 for (i = 0; i < *ti->options_count; i++)
522 optionlist * op = &ti->options[i];
523 if ((op->type & opt_mask) != opt_stringptr) continue;
524 if (p == ( op->type & opt_public
526 : (char *)t->options_block
528 + (long int)op->value)
539 /*************************************************
540 * Deal with an assignment to a macro *
541 *************************************************/
543 /* This function is called when a line that starts with an upper case letter is
544 encountered. The argument "line" should contain a complete logical line, and
545 start with the first letter of the macro name. The macro name and the
546 replacement text are extracted and stored. Redefinition of existing,
547 non-command line, macros is permitted using '==' instead of '='.
550 s points to the start of the logical line
556 read_macro_assignment(uschar *s)
562 macro_item *mlast = NULL;
564 while (isalnum(*s) || *s == '_')
566 if (namelen >= sizeof(name) - 1)
567 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
568 "macro name too long (maximum is " SIZE_T_FMT " characters)", sizeof(name) - 1);
569 name[namelen++] = *s++;
573 while (isspace(*s)) s++;
575 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "malformed macro definition");
582 while (isspace(*s)) s++;
584 /* If an existing macro of the same name was defined on the command line, we
585 just skip this definition. It's an error to attempt to redefine a macro without
586 redef set to TRUE, or to redefine a macro when it hasn't been defined earlier.
587 It is also an error to define a macro whose name begins with the name of a
588 previously defined macro. Note: it is documented that the other way round
591 for (m = macros; m != NULL; m = m->next)
593 int len = Ustrlen(m->name);
595 if (Ustrcmp(m->name, name) == 0)
597 if (!m->command_line && !redef)
598 log_write(0, LOG_CONFIG|LOG_PANIC_DIE, "macro \"%s\" is already "
599 "defined (use \"==\" if you want to redefine it", name);
603 if (len < namelen && Ustrstr(name, m->name) != NULL)
604 log_write(0, LOG_CONFIG|LOG_PANIC_DIE, "\"%s\" cannot be defined as "
605 "a macro because previously defined macro \"%s\" is a substring",
608 /* We cannot have this test, because it is documented that a substring
609 macro is permitted (there is even an example).
611 * if (len > namelen && Ustrstr(m->name, name) != NULL)
612 * log_write(0, LOG_CONFIG|LOG_PANIC_DIE, "\"%s\" cannot be defined as "
613 * "a macro because it is a substring of previously defined macro \"%s\"",
620 /* Check for an overriding command-line definition. */
622 if (m != NULL && m->command_line) return;
624 /* Redefinition must refer to an existing macro. */
629 log_write(0, LOG_CONFIG|LOG_PANIC_DIE, "can't redefine an undefined macro "
633 /* We have a new definition. The macro_item structure includes a final vector
634 called "name" which is one byte long. Thus, adding "namelen" gives us enough
635 room to store the "name" string. */
639 m = store_get(sizeof(macro_item) + namelen);
640 if (macros == NULL) macros = m; else mlast->next = m;
641 Ustrncpy(m->name, name, namelen);
642 m->name[namelen] = 0;
644 m->command_line = FALSE;
647 /* Set the value of the new or redefined macro */
649 m->replacement = string_copy(s);
656 /*************************************************
657 * Read configuration line *
658 *************************************************/
660 /* A logical line of text is read from the configuration file into the big
661 buffer, taking account of macros, .includes, and continuations. The size of
662 big_buffer is increased if necessary. The count of configuration lines is
663 maintained. Physical input lines starting with # (ignoring leading white space,
664 and after macro replacement) and empty logical lines are always ignored.
665 Leading and trailing spaces are removed.
667 If we hit a line of the form "begin xxxx", the xxxx is placed in the
668 next_section vector, and the function returns NULL, indicating the end of a
669 configuration section. On end-of-file, NULL is returned with next_section
674 Returns: a pointer to the first non-blank in the line,
675 or NULL if eof or end of section is reached
679 get_config_line(void)
681 int startoffset = 0; /* To first non-blank char in logical line */
682 int len = 0; /* Of logical line so far */
688 /* Loop for handling continuation lines, skipping comments, and dealing with
693 if (Ufgets(big_buffer+len, big_buffer_size-len, config_file) == NULL)
695 if (config_file_stack != NULL) /* EOF inside .include */
697 (void)fclose(config_file);
698 config_file = config_file_stack->file;
699 config_filename = config_file_stack->filename;
700 config_lineno = config_file_stack->lineno;
701 config_file_stack = config_file_stack->next;
705 /* EOF at top level */
707 if (cstate_stack_ptr >= 0)
708 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
709 "Unexpected end of configuration file: .endif missing");
711 if (len != 0) break; /* EOF after continuation */
712 next_section[0] = 0; /* EOF at start of logical line */
717 newlen = len + Ustrlen(big_buffer + len);
719 /* Handle pathologically long physical lines - yes, it did happen - by
720 extending big_buffer at this point. The code also copes with very long
723 while (newlen == big_buffer_size - 1 && big_buffer[newlen - 1] != '\n')
726 big_buffer_size += BIG_BUFFER_SIZE;
727 newbuffer = store_malloc(big_buffer_size);
729 /* This use of strcpy is OK because we know that the string in the old
730 buffer is shorter than the new buffer. */
732 Ustrcpy(newbuffer, big_buffer);
733 store_free(big_buffer);
734 big_buffer = newbuffer;
735 if (Ufgets(big_buffer+newlen, big_buffer_size-newlen, config_file) == NULL)
737 newlen += Ustrlen(big_buffer + newlen);
740 /* Find the true start of the physical line - leading spaces are always
743 ss = big_buffer + len;
744 while (isspace(*ss)) ss++;
746 /* Process the physical line for macros. If this is the start of the logical
747 line, skip over initial text at the start of the line if it starts with an
748 upper case character followed by a sequence of name characters and an equals
749 sign, because that is the definition of a new macro, and we don't do
750 replacement therein. */
753 if (len == 0 && isupper(*s))
755 while (isalnum(*s) || *s == '_') s++;
756 while (isspace(*s)) s++;
757 if (*s != '=') s = ss; /* Not a macro definition */
760 /* For each defined macro, scan the line (from after XXX= if present),
761 replacing all occurrences of the macro. */
764 for (m = macros; m != NULL; m = m->next)
769 while ((p = Ustrstr(t, m->name)) != NULL)
772 int namelen = Ustrlen(m->name);
773 int replen = Ustrlen(m->replacement);
775 /* Expand the buffer if necessary */
777 while (newlen - namelen + replen + 1 > big_buffer_size)
779 int newsize = big_buffer_size + BIG_BUFFER_SIZE;
780 uschar *newbuffer = store_malloc(newsize);
781 memcpy(newbuffer, big_buffer, newlen + 1);
782 p = newbuffer + (p - big_buffer);
783 s = newbuffer + (s - big_buffer);
784 ss = newbuffer + (ss - big_buffer);
785 t = newbuffer + (t - big_buffer);
786 big_buffer_size = newsize;
787 store_free(big_buffer);
788 big_buffer = newbuffer;
791 /* Shuffle the remaining characters up or down in the buffer before
792 copying in the replacement text. Don't rescan the replacement for this
796 moveby = replen - namelen;
799 memmove(p + replen, pp, (big_buffer + newlen) - pp + 1);
802 Ustrncpy(p, m->replacement, replen);
808 /* An empty macro replacement at the start of a line could mean that ss no
809 longer points to the first non-blank character. */
811 while (isspace(*ss)) ss++;
813 /* Check for comment lines - these are physical lines. */
815 if (*ss == '#') continue;
817 /* Handle conditionals, which are also applied to physical lines. Conditions
818 are of the form ".ifdef ANYTEXT" and are treated as true if any macro
819 expansion occured on the rest of the line. A preliminary test for the leading
820 '.' saves effort on most lines. */
826 /* Search the list of conditional directives */
828 for (i = 0; i < cond_list_size; i++)
831 cond_item *c = cond_list+i;
832 if (Ustrncmp(ss+1, c->name, c->namelen) != 0) continue;
834 /* The following character must be white space or end of string */
836 n = ss[1 + c->namelen];
837 if (n != ' ' && n != 't' && n != '\n' && n != 0) break;
839 /* .ifdef and .ifndef push the current state onto the stack, then set
840 a new one from the table. Stack overflow is an error */
844 if (cstate_stack_ptr >= CSTATE_STACK_SIZE - 1)
845 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
846 ".%s nested too deeply", c->name);
847 cstate_stack[++cstate_stack_ptr] = cstate;
848 cstate = next_cstate[cstate][macro_found? c->action1 : c->action2];
851 /* For any of the others, stack underflow is an error. The next state
852 comes either from the stack (.endif) or from the table. */
856 if (cstate_stack_ptr < 0)
857 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
858 ".%s without matching .ifdef", c->name);
859 cstate = (c->pushpop < 0)? cstate_stack[cstate_stack_ptr--] :
860 next_cstate[cstate][macro_found? c->action1 : c->action2];
863 /* Having dealt with a directive, break the loop */
868 /* If we have handled a conditional directive, continue with the next
869 physical line. Otherwise, fall through. */
871 if (i < cond_list_size) continue;
874 /* If the conditional state is not 0 (actively using these lines), ignore
877 if (cstate != 0) continue; /* Conditional skip */
879 /* Handle .include lines - these are also physical lines. */
881 if (Ustrncmp(ss, ".include", 8) == 0 &&
883 (Ustrncmp(ss+8, "_if_exists", 10) == 0 && isspace(ss[18]))))
886 int include_if_exists = isspace(ss[8])? 0 : 10;
887 config_file_item *save;
890 ss += 9 + include_if_exists;
891 while (isspace(*ss)) ss++;
892 t = ss + Ustrlen(ss);
893 while (t > ss && isspace(t[-1])) t--;
894 if (*ss == '\"' && t[-1] == '\"')
902 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, ".include specifies a non-"
903 "absolute path \"%s\"", ss);
905 if (include_if_exists != 0 && (Ustat(ss, &statbuf) != 0)) continue;
907 save = store_get(sizeof(config_file_item));
908 save->next = config_file_stack;
909 config_file_stack = save;
910 save->file = config_file;
911 save->filename = config_filename;
912 save->lineno = config_lineno;
914 config_file = Ufopen(ss, "rb");
915 if (config_file == NULL)
916 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "failed to open included "
917 "configuration file %s", ss);
918 config_filename = string_copy(ss);
923 /* If this is the start of the logical line, remember where the non-blank
924 data starts. Otherwise shuffle down continuation lines to remove leading
928 startoffset = ss - big_buffer;
931 s = big_buffer + len;
934 memmove(s, ss, (newlen - len) - (ss - s) + 1);
939 /* Accept the new addition to the line. Remove trailing white space. */
942 while (len > 0 && isspace(big_buffer[len-1])) len--;
945 /* We are done if the line does not end in backslash and contains some data.
946 Empty logical lines are ignored. For continuations, remove the backslash and
947 go round the loop to read the continuation line. */
951 if (big_buffer[len-1] != '\\') break; /* End of logical line */
952 big_buffer[--len] = 0; /* Remove backslash */
954 } /* Loop for reading multiple physical lines */
956 /* We now have a logical line. Test for the end of a configuration section (or,
957 more accurately, for the start of the next section). Place the name of the next
958 section in next_section, and return NULL. If the name given is longer than
959 next_section, truncate it. It will be unrecognized later, because all the known
960 section names do fit. Leave space for pluralizing. */
962 s = big_buffer + startoffset; /* First non-space character */
963 if (strncmpic(s, US"begin ", 6) == 0)
966 while (isspace(*s)) s++;
967 if (big_buffer + len - s > sizeof(next_section) - 2)
968 s[sizeof(next_section) - 2] = 0;
969 Ustrcpy(next_section, s);
973 /* Return the first non-blank character. */
980 /*************************************************
982 *************************************************/
984 /* The yield is the pointer to the next uschar. Names longer than the
985 output space are silently truncated. This function is also used from acl.c when
989 name where to put the name
993 Returns: new input pointer
997 readconf_readname(uschar *name, int len, uschar *s)
1000 while (isspace(*s)) s++;
1003 while (isalnum(*s) || *s == '_')
1005 if (p < len-1) name[p++] = *s;
1010 while (isspace(*s)) s++;
1017 /*************************************************
1018 * Read a time value *
1019 *************************************************/
1021 /* This function is also called from outside, to read argument
1022 time values. The format of a time value is:
1024 [<n>w][<n>d][<n>h][<n>m][<n>s]
1026 as long as at least one is present. If a format error is encountered,
1027 return a negative value. The value must be terminated by the given
1032 terminator required terminating character
1033 return_msec if TRUE, allow fractional seconds and return milliseconds
1035 Returns: the time value, or -1 on syntax error
1036 value is seconds if return_msec is FALSE
1037 value is milliseconds if return_msec is TRUE
1041 readconf_readtime(const uschar *s, int terminator, BOOL return_msec)
1049 if (!isdigit(*s)) return -1;
1050 (void)sscanf(CCS s, "%d%n", &value, &count);
1055 case 'w': value *= 7;
1056 case 'd': value *= 24;
1057 case 'h': value *= 60;
1058 case 'm': value *= 60;
1063 if (!return_msec) return -1;
1064 (void)sscanf(CCS s, "%lf%n", &fraction, &count);
1066 if (*s++ != 's') return -1;
1067 yield += (int)(fraction * 1000.0);
1073 if (return_msec) value *= 1000;
1075 if (*s == terminator) return yield;
1077 /* Control never reaches here. */
1082 /*************************************************
1083 * Read a fixed point value *
1084 *************************************************/
1086 /* The value is returned *1000
1090 terminator required terminator
1092 Returns: the value, or -1 on error
1096 readconf_readfixed(const uschar *s, int terminator)
1100 if (!isdigit(*s)) return -1;
1101 (void)sscanf(CS s, "%d%n", &value, &count);
1103 yield = value * 1000;
1107 while (isdigit((*(++s))))
1109 yield += (*s - '0') * m;
1114 return (*s == terminator)? yield : (-1);
1119 /*************************************************
1120 * Find option in list *
1121 *************************************************/
1123 /* The lists are always in order, so binary chop can be used.
1126 name the option name to search for
1127 ol the first entry in the option list
1128 last one more than the offset of the last entry in the option list
1130 Returns: pointer to an option entry, or NULL if not found
1134 find_option(uschar *name, optionlist *ol, int last)
1137 while (last > first)
1139 int middle = (first + last)/2;
1140 int c = Ustrcmp(name, ol[middle].name);
1141 if (c == 0) return ol + middle;
1142 else if (c > 0) first = middle + 1;
1150 /*************************************************
1151 * Find a set flag in option list *
1152 *************************************************/
1154 /* Because some versions of Unix make no restrictions on the values of uids and
1155 gids (even negative ones), we cannot represent "unset" by a special value.
1156 There is therefore a separate boolean variable for each one indicating whether
1157 a value is set or not. This function returns a pointer to the boolean, given
1158 the original option name. It is a major disaster if the flag cannot be found.
1161 name the name of the uid or gid option
1162 oltop points to the start of the relevant option list
1163 last one more than the offset of the last item in the option list
1164 data_block NULL when reading main options => data values in the option
1165 list are absolute addresses; otherwise they are byte offsets
1166 in data_block (used for driver options)
1168 Returns: a pointer to the boolean flag.
1172 get_set_flag(uschar *name, optionlist *oltop, int last, void *data_block)
1176 sprintf(CS name2, "*set_%.50s", name);
1177 ol = find_option(name2, oltop, last);
1178 if (ol == NULL) log_write(0, LOG_MAIN|LOG_PANIC_DIE,
1179 "Exim internal error: missing set flag for %s", name);
1180 return (data_block == NULL)? (BOOL *)(ol->value) :
1181 (BOOL *)((uschar *)data_block + (long int)(ol->value));
1187 /*************************************************
1188 * Output extra characters message and die *
1189 *************************************************/
1191 /* Called when an option line has junk on the end. Sometimes this is because
1192 the sysadmin thinks comments are permitted.
1195 s points to the extra characters
1196 t1..t3 strings to insert in the log message
1198 Returns: doesn't return; dies
1202 extra_chars_error(const uschar *s, const uschar *t1, const uschar *t2, const uschar *t3)
1204 uschar *comment = US"";
1205 if (*s == '#') comment = US" (# is comment only at line start)";
1206 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1207 "extra characters follow %s%s%s%s", t1, t2, t3, comment);
1212 /*************************************************
1213 * Read rewrite information *
1214 *************************************************/
1216 /* Each line of rewrite information contains:
1218 . A complete address in the form user@domain, possibly with
1219 leading * for each part; or alternatively, a regex.
1221 . A replacement string (which will be expanded).
1223 . An optional sequence of one-letter flags, indicating which
1224 headers etc. to apply this rule to.
1226 All this is decoded and placed into a control block. The OR of the flags is
1227 maintained in a common word.
1230 p points to the string that makes up the rule
1231 existflags points to the overall flag word
1232 isglobal TRUE if reading global rewrite rules
1234 Returns: the control block for the parsed rule.
1237 static rewrite_rule *
1238 readconf_one_rewrite(const uschar *p, int *existflags, BOOL isglobal)
1240 rewrite_rule *next = store_get(sizeof(rewrite_rule));
1243 next->key = string_dequote(&p);
1245 while (isspace(*p)) p++;
1247 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1248 "missing rewrite replacement string");
1251 next->replacement = string_dequote(&p);
1253 while (*p != 0) switch (*p++)
1255 case ' ': case '\t': break;
1257 case 'q': next->flags |= rewrite_quit; break;
1258 case 'w': next->flags |= rewrite_whole; break;
1260 case 'h': next->flags |= rewrite_all_headers; break;
1261 case 's': next->flags |= rewrite_sender; break;
1262 case 'f': next->flags |= rewrite_from; break;
1263 case 't': next->flags |= rewrite_to; break;
1264 case 'c': next->flags |= rewrite_cc; break;
1265 case 'b': next->flags |= rewrite_bcc; break;
1266 case 'r': next->flags |= rewrite_replyto; break;
1268 case 'E': next->flags |= rewrite_all_envelope; break;
1269 case 'F': next->flags |= rewrite_envfrom; break;
1270 case 'T': next->flags |= rewrite_envto; break;
1272 case 'Q': next->flags |= rewrite_qualify; break;
1273 case 'R': next->flags |= rewrite_repeat; break;
1276 next->flags |= rewrite_smtp;
1277 if (next->key[0] != '^' && Ustrncmp(next->key, "\\N^", 3) != 0)
1278 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1279 "rewrite rule has the S flag but is not a regular expression");
1283 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1284 "unknown rewrite flag character '%c' "
1285 "(could be missing quotes round replacement item)", p[-1]);
1289 /* If no action flags are set, set all the "normal" rewrites. */
1291 if ((next->flags & (rewrite_all | rewrite_smtp)) == 0)
1292 next->flags |= isglobal? rewrite_all : rewrite_all_headers;
1294 /* Remember which exist, for optimization, and return the rule */
1296 *existflags |= next->flags;
1303 /*************************************************
1304 * Read global rewrite information *
1305 *************************************************/
1307 /* Each line is a single rewrite rule; it is parsed into a control block
1308 by readconf_one_rewrite(), and its flags are ORed into the global flag
1309 word rewrite_existflags. */
1312 readconf_rewrites(void)
1314 rewrite_rule **chain = &global_rewrite_rules;
1317 while ((p = get_config_line()) != NULL)
1319 rewrite_rule *next = readconf_one_rewrite(p, &rewrite_existflags, TRUE);
1321 chain = &(next->next);
1327 /*************************************************
1329 *************************************************/
1331 /* Strings are read into the normal store pool. As long we aren't too
1332 near the end of the current block, the string will just use what is necessary
1333 on the top of the stacking pool, because string_cat() uses the extension
1337 s the rest of the input line
1338 name the option name (for errors)
1340 Returns: pointer to the string
1344 read_string(const uschar *s, const uschar *name)
1349 if (*s != '\"') return string_copy(s);
1352 yield = string_dequote(&s);
1354 if (s == ss+1 || s[-1] != '\"')
1355 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1356 "missing quote at end of string value for %s", name);
1358 if (*s != 0) extra_chars_error(s, US"string value for ", name, US"");
1364 /*************************************************
1365 * Custom-handler options *
1366 *************************************************/
1368 fn_smtp_receive_timeout(const uschar * name, const uschar * str)
1371 smtp_receive_timeout_s = string_copy(str);
1374 /* "smtp_receive_timeout", opt_time, &smtp_receive_timeout */
1375 smtp_receive_timeout = readconf_readtime(str, 0, FALSE);
1376 if (smtp_receive_timeout < 0)
1377 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "invalid time value for %s",
1382 /*************************************************
1383 * Handle option line *
1384 *************************************************/
1386 /* This function is called from several places to process a line containing the
1387 setting of an option. The first argument is the line to be decoded; it has been
1388 checked not to be empty and not to start with '#'. Trailing newlines and white
1389 space have been removed. The second argument is a pointer to the list of
1390 variable names that are to be recognized, together with their types and
1391 locations, and the third argument gives the number of entries in the list.
1393 The fourth argument is a pointer to a data block. If it is NULL, then the data
1394 values in the options list are absolute addresses. Otherwise, they are byte
1395 offsets in the data block.
1397 String option data may continue onto several lines; this function reads further
1398 data from config_file if necessary.
1400 The yield of this function is normally zero. If a string continues onto
1401 multiple lines, then the data value is permitted to be followed by a comma
1402 or a semicolon (for use in drivers) and the yield is that character.
1405 buffer contains the configuration line to be handled
1406 oltop points to the start of the relevant option list
1407 last one more than the offset of the last item in the option list
1408 data_block NULL when reading main options => data values in the option
1409 list are absolute addresses; otherwise they are byte offsets
1410 in data_block when they have opt_public set; otherwise
1411 they are byte offsets in data_block->options_block.
1412 unknown_txt format string to use in panic message for unknown option;
1413 must contain %s for option name
1414 if given as NULL, don't panic on unknown option
1416 Returns: TRUE if an option was read successfully,
1417 FALSE false for an unknown option if unknown_txt == NULL,
1418 otherwise panic and die on an unknown option
1422 readconf_handle_option(uschar *buffer, optionlist *oltop, int last,
1423 void *data_block, uschar *unknown_txt)
1427 int n, count, type, value;
1431 BOOL boolvalue = TRUE;
1432 BOOL freesptr = TRUE;
1433 optionlist *ol, *ol2;
1437 uschar *inttype = US"";
1440 uschar *saved_condition, *strtemp;
1441 uschar **str_target;
1445 /* There may be leading spaces; thereafter, we expect an option name starting
1448 while (isspace(*s)) s++;
1450 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "option setting expected: %s", s);
1452 /* Read the name of the option, and skip any subsequent white space. If
1453 it turns out that what we read was "hide", set the flag indicating that
1454 this is a secure option, and loop to read the next word. */
1456 for (n = 0; n < 2; n++)
1458 while (isalnum(*s) || *s == '_')
1460 if (ptr < sizeof(name)-1) name[ptr++] = *s;
1464 while (isspace(*s)) s++;
1465 if (Ustrcmp(name, "hide") != 0) break;
1466 issecure = opt_secure;
1470 /* Deal with "no_" or "not_" here for booleans */
1472 if (Ustrncmp(name, "no_", 3) == 0)
1478 if (Ustrncmp(name, "not_", 4) == 0)
1484 /* Search the list for the given name. A non-existent name, or an option that
1485 is set twice, is a disaster. */
1487 ol = find_option(name + offset, oltop, last);
1491 if (unknown_txt == NULL) return FALSE;
1492 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, CS unknown_txt, name);
1495 if ((ol->type & opt_set) && !(ol->type & (opt_rep_con | opt_rep_str)))
1496 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1497 "\"%s\" option set for the second time", name);
1499 ol->type |= opt_set | issecure;
1500 type = ol->type & opt_mask;
1502 /* Types with data values must be followed by '='; the "no[t]_" prefix
1503 applies only to boolean values. */
1505 if (type < opt_bool || type > opt_bool_last)
1508 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1509 "negation prefix applied to a non-boolean option");
1511 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1512 "unexpected end of line (data missing) after %s", name);
1514 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "missing \"=\" after %s", name);
1517 /* If a boolean wasn't preceded by "no[t]_" it can be followed by = and
1518 true/false/yes/no, or, in the case of opt_expand_bool, a general string that
1519 ultimately expands to one of those values. */
1521 else if (*s != 0 && (offset != 0 || *s != '='))
1522 extra_chars_error(s, US"boolean option ", name, US"");
1524 /* Skip white space after = */
1526 if (*s == '=') while (isspace((*(++s))));
1528 /* If there is a data block and the opt_public flag is not set, change
1529 the data block pointer to the private options block. */
1531 if (data_block != NULL && (ol->type & opt_public) == 0)
1532 data_block = (void *)(((driver_instance *)data_block)->options_block);
1534 /* Now get the data according to the type. */
1538 /* If a string value is not enclosed in quotes, it consists of
1539 the rest of the current line, verbatim. Otherwise, string escapes
1542 A transport is specified as a string, which is then looked up in the
1543 list of transports. A search type is specified as one of a number of
1546 A set or rewrite rules for a driver is specified as a string, which is
1547 then parsed into a suitable chain of control blocks.
1549 Uids and gids are specified as strings which are then looked up in the
1550 passwd file. Lists of uids and gids are similarly specified as colon-
1551 separated strings. */
1556 case opt_expand_uid:
1557 case opt_expand_gid:
1562 reset_point = sptr = read_string(s, name);
1564 /* Having read a string, we now have several different ways of using it,
1565 depending on the data type, so do another switch. If keeping the actual
1566 string is not required (because it is interpreted), freesptr is set TRUE,
1567 and at the end we reset the pool. */
1571 /* If this was a string, set the variable to point to the new string,
1572 and set the flag so its store isn't reclaimed. If it was a list of rewrite
1573 rules, we still keep the string (for printing), and parse the rules into a
1574 control block and flags word. */
1577 if (data_block == NULL)
1578 str_target = (uschar **)(ol->value);
1580 str_target = (uschar **)((uschar *)data_block + (long int)(ol->value));
1581 if (ol->type & opt_rep_con)
1583 /* We already have a condition, we're conducting a crude hack to let
1584 multiple condition rules be chained together, despite storing them in
1586 saved_condition = *str_target;
1587 strtemp = string_sprintf("${if and{{bool_lax{%s}}{bool_lax{%s}}}}",
1588 saved_condition, sptr);
1589 *str_target = string_copy_malloc(strtemp);
1590 /* TODO(pdp): there is a memory leak here and just below
1591 when we set 3 or more conditions; I still don't
1592 understand the store mechanism enough to know
1593 what's the safe way to free content from an earlier store.
1594 AFAICT, stores stack, so freeing an early stored item also stores
1595 all data alloc'd after it. If we knew conditions were adjacent,
1596 we could survive that, but we don't. So I *think* we need to take
1597 another bit from opt_type to indicate "malloced"; this seems like
1598 quite a hack, especially for this one case. It also means that
1599 we can't ever reclaim the store from the *first* condition.
1601 Because we only do this once, near process start-up, I'm prepared to
1602 let this slide for the time being, even though it rankles. */
1604 else if (ol->type & opt_rep_str)
1606 uschar sep_o = Ustrncmp(name, "headers_add", 11)==0 ? '\n' : ':';
1607 int sep_i = -(int)sep_o;
1608 const uschar * list = sptr;
1610 uschar * list_o = *str_target;
1612 while ((s = string_nextinlist(&list, &sep_i, NULL, 0)))
1613 list_o = string_append_listele(list_o, sep_o, s);
1615 *str_target = string_copy_malloc(list_o);
1625 if (data_block == NULL)
1626 *((uschar **)(ol->value)) = sptr;
1628 *((uschar **)((uschar *)data_block + (long int)(ol->value))) = sptr;
1630 if (type == opt_rewrite)
1635 rewrite_rule **chain;
1638 sprintf(CS name2, "*%.50s_rules", name);
1639 ol2 = find_option(name2, oltop, last);
1640 sprintf(CS name2, "*%.50s_flags", name);
1641 ol3 = find_option(name2, oltop, last);
1643 if (ol2 == NULL || ol3 == NULL)
1644 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1645 "rewrite rules not available for driver");
1647 if (data_block == NULL)
1649 chain = (rewrite_rule **)(ol2->value);
1650 flagptr = (int *)(ol3->value);
1654 chain = (rewrite_rule **)((uschar *)data_block + (long int)(ol2->value));
1655 flagptr = (int *)((uschar *)data_block + (long int)(ol3->value));
1658 while ((p = string_nextinlist(CUSS &sptr, &sep, big_buffer, BIG_BUFFER_SIZE)))
1660 rewrite_rule *next = readconf_one_rewrite(p, flagptr, FALSE);
1662 chain = &(next->next);
1665 if ((*flagptr & (rewrite_all_envelope | rewrite_smtp)) != 0)
1666 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "rewrite rule specifies a "
1667 "non-header rewrite - not allowed at transport time -");
1671 /* If it was an expanded uid, see if there is any expansion to be
1672 done by checking for the presence of a $ character. If there is, save it
1673 in the corresponding *expand_user option field. Otherwise, fall through
1674 to treat it as a fixed uid. Ensure mutual exclusivity of the two kinds
1677 case opt_expand_uid:
1678 sprintf(CS name2, "*expand_%.50s", name);
1679 ol2 = find_option(name2, oltop, last);
1682 uschar *ss = (Ustrchr(sptr, '$') != NULL)? sptr : NULL;
1684 if (data_block == NULL)
1685 *((uschar **)(ol2->value)) = ss;
1687 *((uschar **)((uschar *)data_block + (long int)(ol2->value))) = ss;
1691 *(get_set_flag(name, oltop, last, data_block)) = FALSE;
1697 /* Look up a fixed uid, and also make use of the corresponding gid
1698 if a passwd entry is returned and the gid has not been set. */
1701 if (!route_finduser(sptr, &pw, &uid))
1702 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "user %s was not found", sptr);
1703 if (data_block == NULL)
1704 *((uid_t *)(ol->value)) = uid;
1706 *((uid_t *)((uschar *)data_block + (long int)(ol->value))) = uid;
1708 /* Set the flag indicating a fixed value is set */
1710 *(get_set_flag(name, oltop, last, data_block)) = TRUE;
1712 /* Handle matching gid if we have a passwd entry: done by finding the
1713 same name with terminating "user" changed to "group"; if not found,
1714 ignore. Also ignore if the value is already set. */
1716 if (pw == NULL) break;
1717 Ustrcpy(name+Ustrlen(name)-4, "group");
1718 ol2 = find_option(name, oltop, last);
1719 if (ol2 != NULL && ((ol2->type & opt_mask) == opt_gid ||
1720 (ol2->type & opt_mask) == opt_expand_gid))
1722 BOOL *set_flag = get_set_flag(name, oltop, last, data_block);
1725 if (data_block == NULL)
1726 *((gid_t *)(ol2->value)) = pw->pw_gid;
1728 *((gid_t *)((uschar *)data_block + (long int)(ol2->value))) = pw->pw_gid;
1734 /* If it was an expanded gid, see if there is any expansion to be
1735 done by checking for the presence of a $ character. If there is, save it
1736 in the corresponding *expand_user option field. Otherwise, fall through
1737 to treat it as a fixed gid. Ensure mutual exclusivity of the two kinds
1740 case opt_expand_gid:
1741 sprintf(CS name2, "*expand_%.50s", name);
1742 ol2 = find_option(name2, oltop, last);
1745 uschar *ss = (Ustrchr(sptr, '$') != NULL)? sptr : NULL;
1747 if (data_block == NULL)
1748 *((uschar **)(ol2->value)) = ss;
1750 *((uschar **)((uschar *)data_block + (long int)(ol2->value))) = ss;
1754 *(get_set_flag(name, oltop, last, data_block)) = FALSE;
1760 /* Handle freestanding gid */
1763 if (!route_findgroup(sptr, &gid))
1764 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "group %s was not found", sptr);
1765 if (data_block == NULL)
1766 *((gid_t *)(ol->value)) = gid;
1768 *((gid_t *)((uschar *)data_block + (long int)(ol->value))) = gid;
1769 *(get_set_flag(name, oltop, last, data_block)) = TRUE;
1772 /* If it was a uid list, look up each individual entry, and build
1773 a vector of uids, with a count in the first element. Put the vector
1774 in malloc store so we can free the string. (We are reading into
1775 permanent store already.) */
1783 const uschar *op = expand_string (sptr);
1786 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "failed to expand %s: %s",
1787 name, expand_string_message);
1790 if (*p != 0) count++;
1791 while (*p != 0) if (*p++ == ':' && *p != 0) count++;
1792 list = store_malloc(count*sizeof(uid_t));
1793 list[ptr++] = (uid_t)(count - 1);
1795 if (data_block == NULL)
1796 *((uid_t **)(ol->value)) = list;
1798 *((uid_t **)((uschar *)data_block + (long int)(ol->value))) = list;
1804 (void)string_nextinlist(&p, &sep, big_buffer, BIG_BUFFER_SIZE);
1805 if (!route_finduser(big_buffer, NULL, &uid))
1806 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "user %s was not found",
1813 /* If it was a gid list, look up each individual entry, and build
1814 a vector of gids, with a count in the first element. Put the vector
1815 in malloc store so we can free the string. (We are reading into permanent
1824 const uschar *op = expand_string (sptr);
1827 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "failed to expand %s: %s",
1828 name, expand_string_message);
1831 if (*p != 0) count++;
1832 while (*p != 0) if (*p++ == ':' && *p != 0) count++;
1833 list = store_malloc(count*sizeof(gid_t));
1834 list[ptr++] = (gid_t)(count - 1);
1836 if (data_block == NULL)
1837 *((gid_t **)(ol->value)) = list;
1839 *((gid_t **)((uschar *)data_block + (long int)(ol->value))) = list;
1845 (void)string_nextinlist(&p, &sep, big_buffer, BIG_BUFFER_SIZE);
1846 if (!route_findgroup(big_buffer, &gid))
1847 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "group %s was not found",
1855 /* Release store if the value of the string doesn't need to be kept. */
1857 if (freesptr) store_reset(reset_point);
1860 /* Expanded boolean: if no characters follow, or if there are no dollar
1861 characters, this is a fixed-valued boolean, and we fall through. Otherwise,
1862 save the string for later expansion in the alternate place. */
1864 case opt_expand_bool:
1865 if (*s != 0 && Ustrchr(s, '$') != 0)
1867 sprintf(CS name2, "*expand_%.50s", name);
1868 ol2 = find_option(name2, oltop, last);
1871 reset_point = sptr = read_string(s, name);
1872 if (data_block == NULL)
1873 *((uschar **)(ol2->value)) = sptr;
1875 *((uschar **)((uschar *)data_block + (long int)(ol2->value))) = sptr;
1882 /* Boolean: if no characters follow, the value is boolvalue. Otherwise
1883 look for yes/not/true/false. Some booleans are stored in a single bit in
1884 a single int. There's a special fudge for verify settings; without a suffix
1885 they set both xx_sender and xx_recipient. The table points to the sender
1886 value; search subsequently for the recipient. There's another special case:
1887 opt_bool_set also notes when a boolean has been set. */
1891 case opt_bool_verify:
1895 s = readconf_readname(name2, 64, s);
1896 if (strcmpic(name2, US"true") == 0 || strcmpic(name2, US"yes") == 0)
1898 else if (strcmpic(name2, US"false") == 0 || strcmpic(name2, US"no") == 0)
1900 else log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1901 "\"%s\" is not a valid value for the \"%s\" option", name2, name);
1902 if (*s != 0) extra_chars_error(s, string_sprintf("\"%s\" ", name2),
1903 US"for boolean option ", name);
1906 /* Handle single-bit type. */
1908 if (type == opt_bit)
1910 int bit = 1 << ((ol->type >> 16) & 31);
1911 int *ptr = (data_block == NULL)?
1912 (int *)(ol->value) :
1913 (int *)((uschar *)data_block + (long int)ol->value);
1914 if (boolvalue) *ptr |= bit; else *ptr &= ~bit;
1918 /* Handle full BOOL types */
1920 if (data_block == NULL)
1921 *((BOOL *)(ol->value)) = boolvalue;
1923 *((BOOL *)((uschar *)data_block + (long int)(ol->value))) = boolvalue;
1927 if (type == opt_bool_verify)
1929 sprintf(CS name2, "%.50s_recipient", name + offset);
1930 ol2 = find_option(name2, oltop, last);
1933 if (data_block == NULL)
1934 *((BOOL *)(ol2->value)) = boolvalue;
1936 *((BOOL *)((uschar *)data_block + (long int)(ol2->value))) = boolvalue;
1940 /* Note that opt_bool_set type is set, if there is somewhere to do so */
1942 else if (type == opt_bool_set)
1944 sprintf(CS name2, "*set_%.50s", name + offset);
1945 ol2 = find_option(name2, oltop, last);
1948 if (data_block == NULL)
1949 *((BOOL *)(ol2->value)) = TRUE;
1951 *((BOOL *)((uschar *)data_block + (long int)(ol2->value))) = TRUE;
1960 inttype = US"octal ";
1962 /* Integer: a simple(ish) case; allow octal and hex formats, and
1963 suffixes K and M. The different types affect output, not input. */
1972 lvalue = strtol(CS s, CSS &endptr, intbase);
1975 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "%sinteger expected for %s",
1978 if (errno != ERANGE)
1980 if (tolower(*endptr) == 'k')
1982 if (lvalue > INT_MAX/1024 || lvalue < INT_MIN/1024) errno = ERANGE;
1983 else lvalue *= 1024;
1986 else if (tolower(*endptr) == 'm')
1988 if (lvalue > INT_MAX/(1024*1024) || lvalue < INT_MIN/(1024*1024))
1990 else lvalue *= 1024*1024;
1995 if (errno == ERANGE || lvalue > INT_MAX || lvalue < INT_MIN)
1996 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1997 "absolute value of integer \"%s\" is too large (overflow)", s);
1999 while (isspace(*endptr)) endptr++;
2001 extra_chars_error(endptr, inttype, US"integer value for ", name);
2003 value = (int)lvalue;
2006 if (data_block == NULL)
2007 *((int *)(ol->value)) = value;
2009 *((int *)((uschar *)data_block + (long int)(ol->value))) = value;
2012 /* Integer held in K: again, allow octal and hex formats, and suffixes K and
2019 value = strtol(CS s, CSS &endptr, intbase);
2022 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "%sinteger expected for %s",
2025 if (errno != ERANGE)
2027 if (tolower(*endptr) == 'm')
2029 if (value > INT_MAX/1024 || value < INT_MIN/1024) errno = ERANGE;
2033 else if (tolower(*endptr) == 'k')
2039 value = (value + 512)/1024;
2043 if (errno == ERANGE) log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
2044 "absolute value of integer \"%s\" is too large (overflow)", s);
2046 while (isspace(*endptr)) endptr++;
2048 extra_chars_error(endptr, inttype, US"integer value for ", name);
2051 if (data_block == NULL)
2052 *((int *)(ol->value)) = value;
2054 *((int *)((uschar *)data_block + (long int)(ol->value))) = value;
2057 /* Fixed-point number: held to 3 decimal places. */
2060 if (sscanf(CS s, "%d%n", &value, &count) != 1)
2061 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
2062 "fixed-point number expected for %s", name);
2064 if (value < 0) log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
2065 "integer \"%s\" is too large (overflow)", s);
2069 if (value < 0) log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
2070 "integer \"%s\" is too large (overflow)", s);
2072 if (s[count] == '.')
2075 while (isdigit(s[++count]))
2077 value += (s[count] - '0') * d;
2082 while (isspace(s[count])) count++;
2085 extra_chars_error(s+count, US"fixed-point value for ", name, US"");
2087 if (data_block == NULL)
2088 *((int *)(ol->value)) = value;
2090 *((int *)((uschar *)data_block + (long int)(ol->value))) = value;
2093 /* There's a special routine to read time values. */
2096 value = readconf_readtime(s, 0, FALSE);
2098 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "invalid time value for %s",
2100 if (data_block == NULL)
2101 *((int *)(ol->value)) = value;
2103 *((int *)((uschar *)data_block + (long int)(ol->value))) = value;
2106 /* A time list is a list of colon-separated times, with the first
2107 element holding the size of the list and the second the number of
2113 int *list = (data_block == NULL)?
2114 (int *)(ol->value) :
2115 (int *)((uschar *)data_block + (long int)(ol->value));
2117 if (*s != 0) for (count = 1; count <= list[0] - 2; count++)
2120 uschar *snext = Ustrchr(s, ':');
2124 while (ss > s && isspace(ss[-1])) ss--;
2127 value = readconf_readtime(s, terminator, FALSE);
2129 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "invalid time value for %s",
2131 if (count > 1 && value <= list[count])
2132 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
2133 "time value out of order for %s", name);
2134 list[count+1] = value;
2135 if (snext == NULL) break;
2137 while (isspace(*s)) s++;
2140 if (count > list[0] - 2)
2141 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "too many time values for %s",
2143 if (count > 0 && list[2] == 0) count = 0;
2150 void (*fn)() = ol->value;
2161 /*************************************************
2162 * Print a time value *
2163 *************************************************/
2166 Argument: a time value in seconds
2167 Returns: pointer to a fixed buffer containing the time as a string,
2168 in readconf_readtime() format
2172 readconf_printtime(int t)
2175 uschar *p = time_buffer;
2192 if (w > 0) { sprintf(CS p, "%dw", w); while (*p) p++; }
2193 if (d > 0) { sprintf(CS p, "%dd", d); while (*p) p++; }
2194 if (h > 0) { sprintf(CS p, "%dh", h); while (*p) p++; }
2195 if (m > 0) { sprintf(CS p, "%dm", m); while (*p) p++; }
2196 if (s > 0 || p == time_buffer) sprintf(CS p, "%ds", s);
2203 /*************************************************
2204 * Print an individual option value *
2205 *************************************************/
2207 /* This is used by the -bP option, so prints to the standard output.
2208 The entire options list is passed in as an argument, because some options come
2209 in pairs - typically uid/gid settings, which can either be explicit numerical
2210 values, or strings to be expanded later. If the numerical value is unset,
2211 search for "*expand_<name>" to see if there is a string equivalent.
2214 ol option entry, or NULL for an unknown option
2216 options_block NULL for main configuration options; otherwise points to
2217 a driver block; if the option doesn't have opt_public
2218 set, then options_block->options_block is where the item
2220 oltop points to the option list in which ol exists
2221 last one more than the offset of the last entry in optop
2222 no_labels do not show "foo = " at the start.
2228 print_ol(optionlist *ol, uschar *name, void *options_block,
2229 optionlist *oltop, int last, BOOL no_labels)
2242 printf("%s is not a known option\n", name);
2246 /* Non-admin callers cannot see options that have been flagged secure by the
2249 if (!admin_user && (ol->type & opt_secure) != 0)
2251 const char * const hidden = "<value not displayable>";
2253 printf("%s\n", hidden);
2255 printf("%s = %s\n", name, hidden);
2259 /* Else show the value of the option */
2262 if (options_block != NULL)
2264 if ((ol->type & opt_public) == 0)
2265 options_block = (void *)(((driver_instance *)options_block)->options_block);
2266 value = (void *)((uschar *)options_block + (long int)value);
2269 switch(ol->type & opt_mask)
2272 case opt_rewrite: /* Show the text value */
2273 s = *((uschar **)value);
2274 if (!no_labels) printf("%s = ", name);
2275 printf("%s\n", (s == NULL)? US"" : string_printing2(s, FALSE));
2279 if (!no_labels) printf("%s = ", name);
2280 printf("%d\n", *((int *)value));
2285 int x = *((int *)value);
2286 if (x != 0 && (x & 1023) == 0)
2290 if ((x & 1023) == 0)
2295 if (!no_labels) printf("%s = ", name);
2296 printf("%d%c\n", x, c);
2300 if (!no_labels) printf("%s = ", name);
2308 int x = *((int *)value);
2309 if (!no_labels) printf("%s = ", name);
2310 if (x == 0) printf("0\n");
2311 else if ((x & 1023) == 0) printf("%dM\n", x >> 10);
2312 else printf("%dK\n", x);
2317 if (!no_labels) printf("%s = ", name);
2318 printf("%#o\n", *((int *)value));
2321 /* Can be negative only when "unset", in which case integer */
2325 int x = *((int *)value);
2328 if (x < 0) printf("%s =\n", name); else
2330 if (!no_labels) printf("%s = ", name);
2331 printf("%d.", x/1000);
2344 /* If the numerical value is unset, try for the string value */
2346 case opt_expand_uid:
2347 if (! *get_set_flag(name, oltop, last, options_block))
2349 sprintf(CS name2, "*expand_%.50s", name);
2350 ol2 = find_option(name2, oltop, last);
2353 void *value2 = ol2->value;
2354 if (options_block != NULL)
2355 value2 = (void *)((uschar *)options_block + (long int)value2);
2356 s = *((uschar **)value2);
2357 if (!no_labels) printf("%s = ", name);
2358 printf("%s\n", (s == NULL)? US"" : string_printing(s));
2363 /* Else fall through */
2366 if (!no_labels) printf("%s = ", name);
2367 if (! *get_set_flag(name, oltop, last, options_block))
2371 pw = getpwuid(*((uid_t *)value));
2373 printf("%ld\n", (long int)(*((uid_t *)value)));
2374 else printf("%s\n", pw->pw_name);
2378 /* If the numerical value is unset, try for the string value */
2380 case opt_expand_gid:
2381 if (! *get_set_flag(name, oltop, last, options_block))
2383 sprintf(CS name2, "*expand_%.50s", name);
2384 ol2 = find_option(name2, oltop, last);
2385 if (ol2 != NULL && (ol2->type & opt_mask) == opt_stringptr)
2387 void *value2 = ol2->value;
2388 if (options_block != NULL)
2389 value2 = (void *)((uschar *)options_block + (long int)value2);
2390 s = *((uschar **)value2);
2391 if (!no_labels) printf("%s = ", name);
2392 printf("%s\n", (s == NULL)? US"" : string_printing(s));
2397 /* Else fall through */
2400 if (!no_labels) printf("%s = ", name);
2401 if (! *get_set_flag(name, oltop, last, options_block))
2405 gr = getgrgid(*((int *)value));
2407 printf("%ld\n", (long int)(*((int *)value)));
2408 else printf("%s\n", gr->gr_name);
2413 uidlist = *((uid_t **)value);
2414 if (!no_labels) printf("%s =", name);
2415 if (uidlist != NULL)
2419 if (no_labels) sep = '\0';
2420 for (i = 1; i <= (int)(uidlist[0]); i++)
2422 uschar *name = NULL;
2423 pw = getpwuid(uidlist[i]);
2424 if (pw != NULL) name = US pw->pw_name;
2425 if (sep != '\0') printf("%c", sep);
2426 if (name != NULL) printf("%s", name);
2427 else printf("%ld", (long int)(uidlist[i]));
2435 gidlist = *((gid_t **)value);
2436 if (!no_labels) printf("%s =", name);
2437 if (gidlist != NULL)
2441 if (no_labels) sep = '\0';
2442 for (i = 1; i <= (int)(gidlist[0]); i++)
2444 uschar *name = NULL;
2445 gr = getgrgid(gidlist[i]);
2446 if (gr != NULL) name = US gr->gr_name;
2447 if (sep != '\0') printf("%c", sep);
2448 if (name != NULL) printf("%s", name);
2449 else printf("%ld", (long int)(gidlist[i]));
2457 if (!no_labels) printf("%s = ", name);
2458 printf("%s\n", readconf_printtime(*((int *)value)));
2464 int *list = (int *)value;
2465 if (!no_labels) printf("%s = ", name);
2466 for (i = 0; i < list[1]; i++)
2467 printf("%s%s", (i == 0)? "" : ":", readconf_printtime(list[i+2]));
2473 printf("%s%s\n", ((*((int *)value)) & (1 << ((ol->type >> 16) & 31)))?
2477 case opt_expand_bool:
2478 sprintf(CS name2, "*expand_%.50s", name);
2479 ol2 = find_option(name2, oltop, last);
2480 if (ol2 != NULL && ol2->value != NULL)
2482 void *value2 = ol2->value;
2483 if (options_block != NULL)
2484 value2 = (void *)((uschar *)options_block + (long int)value2);
2485 s = *((uschar **)value2);
2488 if (!no_labels) printf("%s = ", name);
2489 printf("%s\n", string_printing(s));
2492 /* s == NULL => string not set; fall through */
2498 case opt_bool_verify:
2500 printf("%s%s\n", (*((BOOL *)value))? "" : "no_", name);
2507 /*************************************************
2508 * Print value from main configuration *
2509 *************************************************/
2511 /* This function, called as a result of encountering the -bP option,
2512 causes the value of any main configuration variable to be output if the
2513 second argument is NULL. There are some special values:
2515 all print all main configuration options
2516 configure_file print the name of the configuration file
2517 routers print the routers' configurations
2518 transports print the transports' configuration
2519 authenticators print the authenticators' configuration
2520 macros print the macros' configuration
2521 router_list print a list of router names
2522 transport_list print a list of transport names
2523 authenticator_list print a list of authentication mechanism names
2524 macro_list print a list of macro names
2525 +name print a named list item
2526 local_scan print the local_scan options
2527 environment print the used execution environment
2529 If the second argument is not NULL, it must be one of "router", "transport",
2530 "authenticator" or "macro" in which case the first argument identifies the
2531 driver whose options are to be printed.
2534 name option name if type == NULL; else driver name
2535 type NULL or driver type name, as described above
2536 no_labels avoid the "foo = " at the start of an item
2542 readconf_print(uschar *name, uschar *type, BOOL no_labels)
2544 BOOL names_only = FALSE;
2546 optionlist *ol2 = NULL;
2547 driver_instance *d = NULL;
2558 static uschar *types[] = { US"address", US"domain", US"host",
2560 static tree_node **anchors[] = { &addresslist_anchor, &domainlist_anchor,
2561 &hostlist_anchor, &localpartlist_anchor };
2563 for (i = 0; i < 4; i++)
2565 t = tree_search(*(anchors[i]), name+1);
2570 printf("%s\n", ((namedlist_block *)(t->data.ptr))->string);
2572 printf("%slist %s = %s\n", types[i], name+1,
2573 ((namedlist_block *)(t->data.ptr))->string);
2578 printf("no address, domain, host, or local part list called \"%s\" "
2579 "exists\n", name+1);
2584 if (Ustrcmp(name, "configure_file") == 0)
2586 printf("%s\n", CS config_main_filename);
2590 if (Ustrcmp(name, "all") == 0)
2592 for (ol = optionlist_config;
2593 ol < optionlist_config + optionlist_config_size; ol++)
2595 if ((ol->type & opt_hidden) == 0)
2596 print_ol(ol, US ol->name, NULL,
2597 optionlist_config, optionlist_config_size,
2603 if (Ustrcmp(name, "local_scan") == 0)
2605 #ifndef LOCAL_SCAN_HAS_OPTIONS
2606 printf("local_scan() options are not supported\n");
2608 for (ol = local_scan_options;
2609 ol < local_scan_options + local_scan_options_count; ol++)
2611 print_ol(ol, US ol->name, NULL, local_scan_options,
2612 local_scan_options_count, no_labels);
2618 if (Ustrcmp(name, "routers") == 0)
2623 else if (Ustrcmp(name, "transports") == 0)
2625 type = US"transport";
2629 else if (Ustrcmp(name, "authenticators") == 0)
2631 type = US"authenticator";
2635 else if (Ustrcmp(name, "macros") == 0)
2641 else if (Ustrcmp(name, "router_list") == 0)
2648 else if (Ustrcmp(name, "transport_list") == 0)
2650 type = US"transport";
2655 else if (Ustrcmp(name, "authenticator_list") == 0)
2657 type = US"authenticator";
2662 else if (Ustrcmp(name, "macro_list") == 0)
2669 else if (Ustrcmp(name, "environment") == 0)
2675 for (p = USS environ; *p; p++) ;
2676 n = p - USS environ;
2677 qsort(environ, p - USS environ, sizeof(*p), (__compar_fn_t) string_compare_by_pointer);
2679 for (p = USS environ; *p; p++)
2681 if (no_labels) *(Ustrchr(*p, '=')) = '\0';
2690 print_ol(find_option(name, optionlist_config, optionlist_config_size),
2691 name, NULL, optionlist_config, optionlist_config_size, no_labels);
2696 /* Handle the options for a router or transport. Skip options that are flagged
2697 as hidden. Some of these are options with names starting with '*', used for
2698 internal alternative representations of other options (which the printing
2699 function will sort out). Others are synonyms kept for backward compatibility.
2702 if (Ustrcmp(type, "router") == 0)
2704 d = (driver_instance *)routers;
2705 ol2 = optionlist_routers;
2706 size = optionlist_routers_size;
2708 else if (Ustrcmp(type, "transport") == 0)
2710 d = (driver_instance *)transports;
2711 ol2 = optionlist_transports;
2712 size = optionlist_transports_size;
2714 else if (Ustrcmp(type, "authenticator") == 0)
2716 d = (driver_instance *)auths;
2717 ol2 = optionlist_auths;
2718 size = optionlist_auths_size;
2721 else if (Ustrcmp(type, "macro") == 0)
2723 /* People store passwords in macros and they were previously not available
2724 for printing. So we have an admin_users restriction. */
2727 fprintf(stderr, "exim: permission denied\n");
2730 for (m = macros; m != NULL; m = m->next)
2732 if (name == NULL || Ustrcmp(name, m->name) == 0)
2735 printf("%s\n", CS m->name);
2737 printf("%s=%s\n", CS m->name, CS m->replacement);
2743 printf("%s %s not found\n", type, name);
2749 for (; d != NULL; d = d->next) printf("%s\n", CS d->name);
2753 /* Either search for a given driver, or print all of them */
2755 for (; d != NULL; d = d->next)
2758 printf("\n%s %s:\n", d->name, type);
2759 else if (Ustrcmp(d->name, name) != 0) continue;
2761 for (ol = ol2; ol < ol2 + size; ol++)
2763 if ((ol->type & opt_hidden) == 0)
2764 print_ol(ol, US ol->name, d, ol2, size, no_labels);
2767 for (ol = d->info->options;
2768 ol < d->info->options + *(d->info->options_count); ol++)
2770 if ((ol->type & opt_hidden) == 0)
2771 print_ol(ol, US ol->name, d, d->info->options, *(d->info->options_count), no_labels);
2773 if (name != NULL) return;
2775 if (name != NULL) printf("%s %s not found\n", type, name);
2780 /*************************************************
2781 * Read a named list item *
2782 *************************************************/
2784 /* This function reads a name and a list (i.e. string). The name is used to
2785 save the list in a tree, sorted by its name. Each entry also has a number,
2786 which can be used for caching tests, but if the string contains any expansion
2787 items other than $key, the number is set negative to inhibit caching. This
2788 mechanism is used for domain, host, and address lists that are referenced by
2792 anchorp points to the tree anchor
2793 numberp points to the current number for this tree
2794 max the maximum number permitted
2795 s the text of the option line, starting immediately after the name
2797 tname the name of the list type, for messages
2803 read_named_list(tree_node **anchorp, int *numberp, int max, uschar *s,
2806 BOOL forcecache = FALSE;
2809 namedlist_block *nb = store_get(sizeof(namedlist_block));
2811 if (Ustrncmp(s, "_cache", 6) == 0)
2818 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "unrecognized configuration line");
2820 if (*numberp >= max)
2821 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "too many named %ss (max is %d)\n",
2824 while (isspace(*s)) s++;
2826 while (isalnum(*s) || *s == '_') s++;
2827 t = store_get(sizeof(tree_node) + s-ss);
2828 Ustrncpy(t->name, ss, s-ss);
2830 while (isspace(*s)) s++;
2832 if (!tree_insertnode(anchorp, t))
2833 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
2834 "duplicate name \"%s\" for a named %s", t->name, tname);
2837 nb->number = *numberp;
2840 if (*s++ != '=') log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
2841 "missing '=' after \"%s\"", t->name);
2842 while (isspace(*s)) s++;
2843 nb->string = read_string(s, t->name);
2844 nb->cache_data = NULL;
2846 /* Check the string for any expansions; if any are found, mark this list
2847 uncacheable unless the user has explicited forced caching. */
2849 if (!forcecache && Ustrchr(nb->string, '$') != NULL) nb->number = -1;
2855 /*************************************************
2856 * Unpick data for a rate limit *
2857 *************************************************/
2859 /* This function is called to unpick smtp_ratelimit_{mail,rcpt} into four
2863 s string, in the form t,b,f,l
2864 where t is the threshold (integer)
2865 b is the initial delay (time)
2866 f is the multiplicative factor (fixed point)
2867 k is the maximum time (time)
2868 threshold where to store threshold
2869 base where to store base in milliseconds
2870 factor where to store factor in milliseconds
2871 limit where to store limit
2873 Returns: nothing (panics on error)
2877 unpick_ratelimit(uschar *s, int *threshold, int *base, double *factor,
2880 uschar bstring[16], lstring[16];
2882 if (sscanf(CS s, "%d, %15[0123456789smhdw.], %lf, %15s", threshold, bstring,
2883 factor, lstring) == 4)
2885 *base = readconf_readtime(bstring, 0, TRUE);
2886 *limit = readconf_readtime(lstring, 0, TRUE);
2887 if (*base >= 0 && *limit >= 0) return;
2889 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "malformed ratelimit data: %s", s);
2895 /*************************************************
2896 * Drop privs for checking TLS config *
2897 *************************************************/
2899 /* We want to validate TLS options during readconf, but do not want to be
2900 root when we call into the TLS library, in case of library linkage errors
2901 which cause segfaults; before this check, those were always done as the Exim
2902 runtime user and it makes sense to continue with that.
2904 Assumes: tls_require_ciphers has been set, if it will be
2905 exim_user has been set, if it will be
2906 exim_group has been set, if it will be
2908 Returns: bool for "okay"; false will cause caller to immediately exit.
2913 tls_dropprivs_validate_require_cipher(void)
2915 const uschar *errmsg;
2918 void (*oldsignal)(int);
2920 oldsignal = signal(SIGCHLD, SIG_DFL);
2923 if ((pid = fork()) < 0)
2924 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "fork failed for TLS check");
2928 /* in some modes, will have dropped privilege already */
2930 exim_setugid(exim_uid, exim_gid, FALSE,
2931 US"calling tls_validate_require_cipher");
2933 errmsg = tls_validate_require_cipher();
2936 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
2937 "tls_require_ciphers invalid: %s", errmsg);
2944 rc = waitpid(pid, &status, 0);
2945 } while (rc < 0 && errno == EINTR);
2948 debug_printf("tls_validate_require_cipher child %d ended: status=0x%x\n",
2951 signal(SIGCHLD, oldsignal);
2955 #endif /* SUPPORT_TLS */
2960 /*************************************************
2961 * Read main configuration options *
2962 *************************************************/
2964 /* This function is the first to be called for configuration reading. It
2965 opens the configuration file and reads general configuration settings until
2966 it reaches the end of the configuration section. The file is then left open so
2967 that the remaining configuration data can subsequently be read if needed for
2970 The configuration file must be owned either by root or exim, and be writeable
2971 only by root or uid/gid exim. The values for Exim's uid and gid can be changed
2972 in the config file, so the test is done on the compiled in values. A slight
2973 anomaly, to be carefully documented.
2975 The name of the configuration file is taken from a list that is included in the
2976 binary of Exim. It can be altered from the command line, but if that is done,
2977 root privilege is immediately withdrawn unless the caller is root or exim.
2978 The first file on the list that exists is used.
2980 For use on multiple systems that share file systems, first look for a
2981 configuration file whose name has the current node name on the end. If that is
2982 not found, try the generic name. For really contorted configurations, that run
2983 multiple Exims with different uid settings, first try adding the effective uid
2984 before the node name. These complications are going to waste resources on most
2985 systems. Therefore they are available only when requested by compile-time
2992 struct stat statbuf;
2993 uschar *s, *filename;
2994 const uschar *list = config_main_filelist;
2996 /* Loop through the possible file names */
2998 while((filename = string_nextinlist(&list, &sep, big_buffer, big_buffer_size))
3002 /* To avoid confusion: Exim changes to / at the very beginning and
3003 * and to $spool_directory later. */
3004 if (filename[0] != '/')
3006 fprintf(stderr, "-C %s: only absolute names are allowed\n", filename);
3010 /* Cut out all the fancy processing unless specifically wanted */
3012 #if defined(CONFIGURE_FILE_USE_NODE) || defined(CONFIGURE_FILE_USE_EUID)
3013 uschar *suffix = filename + Ustrlen(filename);
3015 /* Try for the node-specific file if a node name exists */
3017 #ifdef CONFIGURE_FILE_USE_NODE
3019 if (uname(&uts) >= 0)
3021 #ifdef CONFIGURE_FILE_USE_EUID
3022 sprintf(CS suffix, ".%ld.%.256s", (long int)original_euid, uts.nodename);
3023 config_file = Ufopen(filename, "rb");
3024 if (config_file == NULL)
3025 #endif /* CONFIGURE_FILE_USE_EUID */
3027 sprintf(CS suffix, ".%.256s", uts.nodename);
3028 config_file = Ufopen(filename, "rb");
3031 #endif /* CONFIGURE_FILE_USE_NODE */
3033 /* Otherwise, try the generic name, possibly with the euid added */
3035 #ifdef CONFIGURE_FILE_USE_EUID
3036 if (config_file == NULL)
3038 sprintf(CS suffix, ".%ld", (long int)original_euid);
3039 config_file = Ufopen(filename, "rb");
3041 #endif /* CONFIGURE_FILE_USE_EUID */
3043 /* Finally, try the unadorned name */
3045 if (config_file == NULL)
3048 config_file = Ufopen(filename, "rb");
3050 #else /* if neither defined */
3052 /* This is the common case when the fancy processing is not included. */
3054 config_file = Ufopen(filename, "rb");
3057 /* If the file does not exist, continue to try any others. For any other
3058 error, break out (and die). */
3060 if (config_file != NULL || errno != ENOENT) break;
3063 /* On success, save the name for verification; config_filename is used when
3064 logging configuration errors (it changes for .included files) whereas
3065 config_main_filename is the name shown by -bP. Failure to open a configuration
3066 file is a serious disaster. */
3068 if (config_file != NULL)
3071 config_filename = config_main_filename = string_copy(filename);
3073 p = Ustrrchr(filename, '/');
3074 config_main_directory = p ? string_copyn(filename, p - filename)
3075 : string_copy(US".");
3079 if (filename == NULL)
3080 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "non-existent configuration file(s): "
3081 "%s", config_main_filelist);
3083 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "%s", string_open_failed(errno,
3084 "configuration file %s", filename));
3087 /* Check the status of the file we have opened, if we have retained root
3088 privileges and the file isn't /dev/null (which *should* be 0666). */
3090 if (trusted_config && Ustrcmp(filename, US"/dev/null"))
3092 if (fstat(fileno(config_file), &statbuf) != 0)
3093 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "failed to stat configuration file %s",
3096 if ((statbuf.st_uid != root_uid /* owner not root */
3097 #ifdef CONFIGURE_OWNER
3098 && statbuf.st_uid != config_uid /* owner not the special one */
3101 (statbuf.st_gid != root_gid /* group not root & */
3102 #ifdef CONFIGURE_GROUP
3103 && statbuf.st_gid != config_gid /* group not the special one */
3105 && (statbuf.st_mode & 020) != 0) || /* group writeable */
3107 ((statbuf.st_mode & 2) != 0)) /* world writeable */
3109 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "Exim configuration file %s has the "
3110 "wrong owner, group, or mode", big_buffer);
3113 /* Process the main configuration settings. They all begin with a lower case
3114 letter. If we see something starting with an upper case letter, it is taken as
3115 a macro definition. */
3117 while ((s = get_config_line()) != NULL)
3119 if (isupper(s[0])) read_macro_assignment(s);
3121 else if (Ustrncmp(s, "domainlist", 10) == 0)
3122 read_named_list(&domainlist_anchor, &domainlist_count,
3123 MAX_NAMED_LIST, s+10, US"domain list");
3125 else if (Ustrncmp(s, "hostlist", 8) == 0)
3126 read_named_list(&hostlist_anchor, &hostlist_count,
3127 MAX_NAMED_LIST, s+8, US"host list");
3129 else if (Ustrncmp(s, US"addresslist", 11) == 0)
3130 read_named_list(&addresslist_anchor, &addresslist_count,
3131 MAX_NAMED_LIST, s+11, US"address list");
3133 else if (Ustrncmp(s, US"localpartlist", 13) == 0)
3134 read_named_list(&localpartlist_anchor, &localpartlist_count,
3135 MAX_NAMED_LIST, s+13, US"local part list");
3138 (void) readconf_handle_option(s, optionlist_config, optionlist_config_size,
3139 NULL, US"main option \"%s\" unknown");
3143 /* If local_sender_retain is set, local_from_check must be unset. */
3145 if (local_sender_retain && local_from_check)
3146 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "both local_from_check and "
3147 "local_sender_retain are set; this combination is not allowed");
3149 /* If the timezone string is empty, set it to NULL, implying no TZ variable
3152 if (timezone_string != NULL && *timezone_string == 0) timezone_string = NULL;
3154 /* The max retry interval must not be greater than 24 hours. */
3156 if (retry_interval_max > 24*60*60) retry_interval_max = 24*60*60;
3158 /* remote_max_parallel must be > 0 */
3160 if (remote_max_parallel <= 0) remote_max_parallel = 1;
3162 /* Save the configured setting of freeze_tell, so we can re-instate it at the
3163 start of a new SMTP message. */
3165 freeze_tell_config = freeze_tell;
3167 /* The primary host name may be required for expansion of spool_directory
3168 and log_file_path, so make sure it is set asap. It is obtained from uname(),
3169 but if that yields an unqualified value, make a FQDN by using gethostbyname to
3170 canonize it. Some people like upper case letters in their host names, so we
3171 don't force the case. */
3173 if (primary_hostname == NULL)
3175 const uschar *hostname;
3177 if (uname(&uts) < 0)
3178 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "uname() failed to yield host name");
3179 hostname = US uts.nodename;
3181 if (Ustrchr(hostname, '.') == NULL)
3184 struct hostent *hostdata;
3187 if (!disable_ipv6 && (dns_ipv4_lookup == NULL ||
3188 match_isinlist(hostname, CUSS &dns_ipv4_lookup, 0, NULL, NULL,
3189 MCL_DOMAIN, TRUE, NULL) != OK))
3198 #if HAVE_GETIPNODEBYNAME
3200 hostdata = getipnodebyname(CS hostname, af, 0, &error_num);
3202 hostdata = gethostbyname2(CS hostname, af);
3205 hostdata = gethostbyname(CS hostname);
3208 if (hostdata != NULL)
3210 hostname = US hostdata->h_name;
3214 if (af == AF_INET) break;
3219 primary_hostname = string_copy(hostname);
3222 /* Set up default value for smtp_active_hostname */
3224 smtp_active_hostname = primary_hostname;
3226 /* If spool_directory wasn't set in the build-time configuration, it must have
3227 got set above. Of course, writing to the log may not work if log_file_path is
3228 not set, but it will at least get to syslog or somewhere, with any luck. */
3230 if (*spool_directory == 0)
3231 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "spool_directory undefined: cannot "
3234 /* Expand the spool directory name; it may, for example, contain the primary
3235 host name. Same comment about failure. */
3237 s = expand_string(spool_directory);
3239 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "failed to expand spool_directory "
3240 "\"%s\": %s", spool_directory, expand_string_message);
3241 spool_directory = s;
3243 /* Expand log_file_path, which must contain "%s" in any component that isn't
3244 the null string or "syslog". It is also allowed to contain one instance of %D
3245 or %M. However, it must NOT contain % followed by anything else. */
3247 if (*log_file_path != 0)
3249 const uschar *ss, *sss;
3250 int sep = ':'; /* Fixed for log file path */
3251 s = expand_string(log_file_path);
3253 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "failed to expand log_file_path "
3254 "\"%s\": %s", log_file_path, expand_string_message);
3257 while ((sss = string_nextinlist(&ss,&sep,big_buffer,big_buffer_size)) != NULL)
3260 if (sss[0] == 0 || Ustrcmp(sss, "syslog") == 0) continue;
3261 t = Ustrstr(sss, "%s");
3263 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "log_file_path \"%s\" does not "
3264 "contain \"%%s\"", sss);
3266 t = Ustrchr(sss, '%');
3269 if ((t[1] != 'D' && t[1] != 'M') || Ustrchr(t+2, '%') != NULL)
3270 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "log_file_path \"%s\" contains "
3271 "unexpected \"%%\" character", s);
3278 /* Interpret syslog_facility into an integer argument for 'ident' param to
3279 openlog(). Default is LOG_MAIL set in globals.c. Allow the user to omit the
3282 if (syslog_facility_str != NULL)
3285 uschar *s = syslog_facility_str;
3287 if ((Ustrlen(syslog_facility_str) >= 4) &&
3288 (strncmpic(syslog_facility_str, US"log_", 4) == 0))
3291 for (i = 0; i < syslog_list_size; i++)
3293 if (strcmpic(s, syslog_list[i].name) == 0)
3295 syslog_facility = syslog_list[i].value;
3300 if (i >= syslog_list_size)
3302 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
3303 "failed to interpret syslog_facility \"%s\"", syslog_facility_str);
3307 /* Expand pid_file_path */
3309 if (*pid_file_path != 0)
3311 s = expand_string(pid_file_path);
3313 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "failed to expand pid_file_path "
3314 "\"%s\": %s", pid_file_path, expand_string_message);
3318 /* Set default value of process_log_path */
3320 if (process_log_path == NULL || *process_log_path =='\0')
3321 process_log_path = string_sprintf("%s/exim-process.info", spool_directory);
3323 /* Compile the regex for matching a UUCP-style "From_" line in an incoming
3326 regex_From = regex_must_compile(uucp_from_pattern, FALSE, TRUE);
3328 /* Unpick the SMTP rate limiting options, if set */
3330 if (smtp_ratelimit_mail != NULL)
3332 unpick_ratelimit(smtp_ratelimit_mail, &smtp_rlm_threshold,
3333 &smtp_rlm_base, &smtp_rlm_factor, &smtp_rlm_limit);
3336 if (smtp_ratelimit_rcpt != NULL)
3338 unpick_ratelimit(smtp_ratelimit_rcpt, &smtp_rlr_threshold,
3339 &smtp_rlr_base, &smtp_rlr_factor, &smtp_rlr_limit);
3342 /* The qualify domains default to the primary host name */
3344 if (qualify_domain_sender == NULL)
3345 qualify_domain_sender = primary_hostname;
3346 if (qualify_domain_recipient == NULL)
3347 qualify_domain_recipient = qualify_domain_sender;
3349 /* Setting system_filter_user in the configuration sets the gid as well if a
3350 name is given, but a numerical value does not. */
3352 if (system_filter_uid_set && !system_filter_gid_set)
3354 struct passwd *pw = getpwuid(system_filter_uid);
3356 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "Failed to look up uid %ld",
3357 (long int)system_filter_uid);
3358 system_filter_gid = pw->pw_gid;
3359 system_filter_gid_set = TRUE;
3362 /* If the errors_reply_to field is set, check that it is syntactically valid
3363 and ensure it contains a domain. */
3365 if (errors_reply_to != NULL)
3368 int start, end, domain;
3369 uschar *recipient = parse_extract_address(errors_reply_to, &errmess,
3370 &start, &end, &domain, FALSE);
3372 if (recipient == NULL)
3373 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
3374 "error in errors_reply_to (%s): %s", errors_reply_to, errmess);
3377 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
3378 "errors_reply_to (%s) does not contain a domain", errors_reply_to);
3381 /* If smtp_accept_queue or smtp_accept_max_per_host is set, then
3382 smtp_accept_max must also be set. */
3384 if (smtp_accept_max == 0 &&
3385 (smtp_accept_queue > 0 || smtp_accept_max_per_host != NULL))
3386 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
3387 "smtp_accept_max must be set if smtp_accept_queue or "
3388 "smtp_accept_max_per_host is set");
3390 /* Set up the host number if anything is specified. It is an expanded string
3391 so that it can be computed from the host name, for example. We do this last
3392 so as to ensure that everything else is set up before the expansion. */
3394 if (host_number_string != NULL)
3398 uschar *s = expand_string(host_number_string);
3400 log_write(0, LOG_MAIN|LOG_PANIC_DIE,
3401 "failed to expand localhost_number \"%s\": %s",
3402 host_number_string, expand_string_message);
3403 n = Ustrtol(s, &end, 0);
3404 while (isspace(*end)) end++;
3406 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
3407 "localhost_number value is not a number: %s", s);
3408 if (n > LOCALHOST_MAX)
3409 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
3410 "localhost_number is greater than the maximum allowed value (%d)",
3416 /* If tls_verify_hosts is set, tls_verify_certificates must also be set */
3418 if ((tls_verify_hosts != NULL || tls_try_verify_hosts != NULL) &&
3419 tls_verify_certificates == NULL)
3420 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
3421 "tls_%sverify_hosts is set, but tls_verify_certificates is not set",
3422 (tls_verify_hosts != NULL)? "" : "try_");
3424 /* This also checks that the library linkage is working and we can call
3425 routines in it, so call even if tls_require_ciphers is unset */
3426 if (!tls_dropprivs_validate_require_cipher())
3429 /* Magic number: at time of writing, 1024 has been the long-standing value
3430 used by so many clients, and what Exim used to use always, that it makes
3431 sense to just min-clamp this max-clamp at that. */
3432 if (tls_dh_max_bits < 1024)
3433 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
3434 "tls_dh_max_bits is too small, must be at least 1024 for interop");
3436 /* If openssl_options is set, validate it */
3437 if (openssl_options != NULL)
3440 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
3441 "openssl_options is set but we're using GnuTLS");
3444 if (!(tls_openssl_options_parse(openssl_options, &dummy)))
3445 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
3446 "openssl_options parse error: %s", openssl_options);
3450 if (gnutls_require_kx || gnutls_require_mac || gnutls_require_proto)
3451 log_write(0, LOG_MAIN, "WARNING: main options"
3452 " gnutls_require_kx, gnutls_require_mac and gnutls_require_protocols"
3454 #endif /*SUPPORT_TLS*/
3456 if ((!add_environment || *add_environment == '\0') && !keep_environment)
3457 log_write(0, LOG_MAIN,
3458 "WARNING: purging the environment.\n"
3459 " Suggested action: use keep_environment and add_environment.\n");
3464 /*************************************************
3465 * Initialize one driver *
3466 *************************************************/
3468 /* This is called once the driver's generic options, if any, have been read.
3469 We can now find the driver, set up defaults for the private options, and
3470 unset any "set" bits in the private options table (which might have been
3471 set by another incarnation of the same driver).
3474 d pointer to driver instance block, with generic
3476 drivers_available vector of available drivers
3477 size_of_info size of each block in drivers_available
3478 class class of driver, for error message
3480 Returns: pointer to the driver info block
3483 static driver_info *
3484 init_driver(driver_instance *d, driver_info *drivers_available,
3485 int size_of_info, uschar *class)
3489 for (dd = drivers_available; dd->driver_name[0] != 0;
3490 dd = (driver_info *)(((uschar *)dd) + size_of_info))
3492 if (Ustrcmp(d->driver_name, dd->driver_name) == 0)
3495 int len = dd->options_len;
3497 d->options_block = store_get(len);
3498 memcpy(d->options_block, dd->options_block, len);
3499 for (i = 0; i < *(dd->options_count); i++)
3500 dd->options[i].type &= ~opt_set;
3505 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
3506 "%s %s: cannot find %s driver \"%s\"", class, d->name, class, d->driver_name);
3508 return NULL; /* never obeyed */
3514 /*************************************************
3515 * Initialize driver list *
3516 *************************************************/
3518 /* This function is called for routers, transports, and authentication
3519 mechanisms. It reads the data from the current point in the configuration file
3520 up to the end of the section, and sets up a chain of instance blocks according
3521 to the file's contents. The file will already have been opened by a call to
3522 readconf_main, and must be left open for subsequent reading of further data.
3524 Any errors cause a panic crash. Note that the blocks with names driver_info and
3525 driver_instance must map the first portions of all the _info and _instance
3526 blocks for this shared code to work.
3529 class "router", "transport", or "authenticator"
3530 anchor &routers, &transports, &auths
3531 drivers_available available drivers
3532 size_of_info size of each info block
3533 instance_default points to default data for an instance
3534 instance_size size of instance block
3535 driver_optionlist generic option list
3536 driver_optionlist_count count of generic option list
3542 readconf_driver_init(
3544 driver_instance **anchor,
3545 driver_info *drivers_available,
3547 void *instance_default,
3549 optionlist *driver_optionlist,
3550 int driver_optionlist_count)
3552 driver_instance **p = anchor;
3553 driver_instance *d = NULL;
3556 while ((buffer = get_config_line()) != NULL)
3561 /* Read the first name on the line and test for the start of a new driver. A
3562 macro definition indicates the end of the previous driver. If this isn't the
3563 start of a new driver, the line will be re-read. */
3565 s = readconf_readname(name, sizeof(name), buffer);
3567 /* Handle macro definition, first finishing off the initialization of the
3568 previous driver, if any. */
3570 if (isupper(*name) && *s == '=')
3574 if (d->driver_name == NULL)
3575 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
3576 "no driver defined for %s \"%s\"", class, d->name);
3580 read_macro_assignment(buffer);
3584 /* If the line starts with a name terminated by a colon, we are at the
3585 start of the definition of a new driver. The rest of the line must be
3592 /* Finish off initializing the previous driver. */
3596 if (d->driver_name == NULL)
3597 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
3598 "no driver defined for %s \"%s\"", class, d->name);
3602 /* Check that we haven't already got a driver of this name */
3604 for (d = *anchor; d != NULL; d = d->next)
3605 if (Ustrcmp(name, d->name) == 0)
3606 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
3607 "there are two %ss called \"%s\"", class, name);
3609 /* Set up a new driver instance data block on the chain, with
3610 its default values installed. */
3612 d = store_get(instance_size);
3613 memcpy(d, instance_default, instance_size);
3616 d->name = string_copy(name);
3618 /* Clear out the "set" bits in the generic options */
3620 for (i = 0; i < driver_optionlist_count; i++)
3621 driver_optionlist[i].type &= ~opt_set;
3623 /* Check nothing more on this line, then do the next loop iteration. */
3625 while (isspace(*s)) s++;
3626 if (*s != 0) extra_chars_error(s, US"driver name ", name, US"");
3630 /* Not the start of a new driver. Give an error if we have not set up a
3631 current driver yet. */
3633 if (d == NULL) log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
3634 "%s name missing", class);
3636 /* First look to see if this is a generic option; if it is "driver",
3637 initialize the driver. If is it not a generic option, we can look for a
3638 private option provided that the driver has been previously set up. */
3640 if (readconf_handle_option(buffer, driver_optionlist,
3641 driver_optionlist_count, d, NULL))
3643 if (d->info == NULL && d->driver_name != NULL)
3644 init_driver(d, drivers_available, size_of_info, class);
3647 /* Handle private options - pass the generic block because some may
3648 live therein. A flag with each option indicates if it is in the public
3651 else if (d->info != NULL)
3653 readconf_handle_option(buffer, d->info->options,
3654 *(d->info->options_count), d, US"option \"%s\" unknown");
3657 /* The option is not generic and the driver name has not yet been given. */
3659 else log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "option \"%s\" unknown "
3660 "(\"driver\" must be specified before any private options)", name);
3663 /* Run the initialization function for the final driver. */
3667 if (d->driver_name == NULL)
3668 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
3669 "no driver defined for %s \"%s\"", class, d->name);
3676 /*************************************************
3677 * Check driver dependency *
3678 *************************************************/
3680 /* This function is passed a driver instance and a string. It checks whether
3681 any of the string options for the driver contains the given string as an
3685 d points to a driver instance block
3686 s the string to search for
3688 Returns: TRUE if a dependency is found
3692 readconf_depends(driver_instance *d, uschar *s)
3694 int count = *(d->info->options_count);
3698 for (ol = d->info->options; ol < d->info->options + count; ol++)
3700 void *options_block;
3702 int type = ol->type & opt_mask;
3703 if (type != opt_stringptr) continue;
3704 options_block = ((ol->type & opt_public) == 0)? d->options_block : (void *)d;
3705 value = *(uschar **)((uschar *)options_block + (long int)(ol->value));
3706 if (value != NULL && (ss = Ustrstr(value, s)) != NULL)
3708 if (ss <= value || (ss[-1] != '$' && ss[-1] != '{') ||
3709 isalnum(ss[Ustrlen(s)])) continue;
3710 DEBUG(D_transport) debug_printf("driver %s: \"%s\" option depends on %s\n",
3711 d->name, ol->name, s);
3716 DEBUG(D_transport) debug_printf("driver %s does not depend on %s\n", d->name, s);
3723 /*************************************************
3724 * Decode an error type for retries *
3725 *************************************************/
3727 /* This function is global because it is also called from the main
3728 program when testing retry information. It decodes strings such as "quota_7d"
3729 into numerical error codes.
3732 pp points to start of text
3733 p points past end of text
3734 basic_errno points to an int to receive the main error number
3735 more_errno points to an int to receive the secondary error data
3737 Returns: NULL if decoded correctly; else points to error text
3741 readconf_retry_error(const uschar *pp, const uschar *p,
3742 int *basic_errno, int *more_errno)
3745 const uschar *q = pp;
3746 while (q < p && *q != '_') q++;
3749 if (len == 5 && strncmpic(pp, US"quota", len) == 0)
3751 *basic_errno = ERRNO_EXIMQUOTA;
3752 if (q != p && (*more_errno = readconf_readtime(q+1, *p, FALSE)) < 0)
3753 return US"bad time value";
3756 else if (len == 7 && strncmpic(pp, US"refused", len) == 0)
3758 *basic_errno = ECONNREFUSED;
3761 if (strncmpic(q+1, US"MX", p-q-1) == 0) *more_errno = 'M';
3762 else if (strncmpic(q+1, US"A", p-q-1) == 0) *more_errno = 'A';
3763 else return US"A or MX expected after \"refused\"";
3767 else if (len == 7 && strncmpic(pp, US"timeout", len) == 0)
3769 *basic_errno = ETIMEDOUT;
3773 int xlen = p - q - 1;
3774 const uschar *x = q + 1;
3776 static uschar *extras[] =
3777 { US"A", US"MX", US"connect", US"connect_A", US"connect_MX" };
3778 static int values[] =
3779 { 'A', 'M', RTEF_CTOUT, RTEF_CTOUT|'A', RTEF_CTOUT|'M' };
3781 for (i = 0; i < sizeof(extras)/sizeof(uschar *); i++)
3782 if (strncmpic(x, extras[i], xlen) == 0)
3784 *more_errno = values[i];
3788 if (i >= sizeof(extras)/sizeof(uschar *))
3789 if (strncmpic(x, US"DNS", xlen) == 0)
3790 log_write(0, LOG_MAIN|LOG_PANIC, "\"timeout_dns\" is no longer "
3791 "available in retry rules (it has never worked) - treated as "
3794 return US"\"A\", \"MX\", or \"connect\" expected after \"timeout\"";
3798 else if (strncmpic(pp, US"mail_4", 6) == 0 ||
3799 strncmpic(pp, US"rcpt_4", 6) == 0 ||
3800 strncmpic(pp, US"data_4", 6) == 0)
3803 int x = 255; /* means "any 4xx code" */
3804 if (p != pp + 8) bad = TRUE; else
3806 int a = pp[6], b = pp[7];
3810 if (isdigit(b)) x += b - '0';
3811 else if (b == 'x') x += 100;
3814 else if (a != 'x' || b != 'x') bad = TRUE;
3818 return string_sprintf("%.4s_4 must be followed by xx, dx, or dd, where "
3819 "x is literal and d is any digit", pp);
3821 *basic_errno = *pp == 'm' ? ERRNO_MAIL4XX :
3822 *pp == 'r' ? ERRNO_RCPT4XX : ERRNO_DATA4XX;
3823 *more_errno = x << 8;
3826 else if (len == 4 && strncmpic(pp, US"auth", len) == 0 &&
3827 strncmpic(q+1, US"failed", p-q-1) == 0)
3828 *basic_errno = ERRNO_AUTHFAIL;
3830 else if (strncmpic(pp, US"lost_connection", p - pp) == 0)
3831 *basic_errno = ERRNO_SMTPCLOSED;
3833 else if (strncmpic(pp, US"tls_required", p - pp) == 0)
3834 *basic_errno = ERRNO_TLSREQUIRED;
3836 else if (strncmpic(pp, US"lookup", p - pp) == 0)
3837 *basic_errno = ERRNO_UNKNOWNHOST;
3839 else if (len != 1 || Ustrncmp(pp, "*", 1) != 0)
3840 return string_sprintf("unknown or malformed retry error \"%.*s\"", (int) (p-pp), pp);
3848 /*************************************************
3849 * Read retry information *
3850 *************************************************/
3852 /* Each line of retry information contains:
3854 . A domain name pattern or an address pattern;
3856 . An error name, possibly with additional data, or *;
3858 . An optional sequence of retry items, each consisting of an identifying
3859 letter, a cutoff time, and optional parameters.
3861 All this is decoded and placed into a control block. */
3864 /* Subroutine to read an argument, preceded by a comma and terminated
3865 by comma, semicolon, whitespace, or newline. The types are: 0 = time value,
3866 1 = fixed point number (returned *1000).
3869 paddr pointer to pointer to current character; updated
3870 type 0 => read a time; 1 => read a fixed point number
3872 Returns: time in seconds or fixed point number * 1000
3876 retry_arg(const uschar **paddr, int type)
3878 const uschar *p = *paddr;
3881 if (*p++ != ',') log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "comma expected");
3883 while (isspace(*p)) p++;
3885 while (isalnum(*p) || (type == 1 && *p == '.')) p++;
3887 if (*p != 0 && !isspace(*p) && *p != ',' && *p != ';')
3888 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "comma or semicolon expected");
3893 case 0: return readconf_readtime(pp, *p, FALSE);
3894 case 1: return readconf_readfixed(pp, *p);
3896 return 0; /* Keep picky compilers happy */
3899 /* The function proper */
3902 readconf_retries(void)
3904 retry_config **chain = &retries;
3908 while ((p = get_config_line()))
3910 retry_rule **rchain;
3914 next = store_get(sizeof(retry_config));
3917 chain = &(next->next);
3918 next->basic_errno = next->more_errno = 0;
3919 next->senders = NULL;
3921 rchain = &(next->rules);
3923 next->pattern = string_dequote(&p);
3924 while (isspace(*p)) p++;
3926 while (mac_isgraph(*p)) p++;
3927 if (p - pp <= 0) log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
3928 "missing error type in retry rule");
3930 /* Test error names for things we understand. */
3932 if ((error = readconf_retry_error(pp, p, &next->basic_errno,
3933 &next->more_errno)))
3934 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "%s", error);
3936 /* There may be an optional address list of senders to be used as another
3937 constraint on the rule. This was added later, so the syntax is a bit of a
3938 fudge. Anything that is not a retry rule starting "F," or "G," is treated as
3941 while (isspace(*p)) p++;
3942 if (Ustrncmp(p, "senders", 7) == 0)
3945 while (isspace(*p)) p++;
3946 if (*p++ != '=') log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
3947 "\"=\" expected after \"senders\" in retry rule");
3948 while (isspace(*p)) p++;
3949 next->senders = string_dequote(&p);
3952 /* Now the retry rules. Keep the maximum timeout encountered. */
3954 while (isspace(*p)) p++;
3958 retry_rule *rule = store_get(sizeof(retry_rule));
3960 rchain = &(rule->next);
3962 rule->rule = toupper(*p++);
3963 rule->timeout = retry_arg(&p, 0);
3964 if (rule->timeout > retry_maximum_timeout)
3965 retry_maximum_timeout = rule->timeout;
3969 case 'F': /* Fixed interval */
3970 rule->p1 = retry_arg(&p, 0);
3973 case 'G': /* Geometrically increasing intervals */
3974 case 'H': /* Ditto, but with randomness */
3975 rule->p1 = retry_arg(&p, 0);
3976 rule->p2 = retry_arg(&p, 1);
3980 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "unknown retry rule letter");
3984 if (rule->timeout <= 0 || rule->p1 <= 0 ||
3985 (rule->rule != 'F' && rule->p2 < 1000))
3986 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
3987 "bad parameters for retry rule");
3989 while (isspace(*p)) p++;
3993 while (isspace(*p)) p++;
3996 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "semicolon expected");
4003 /*************************************************
4004 * Initialize authenticators *
4005 *************************************************/
4007 /* Read the authenticators section of the configuration file.
4016 auth_instance *au, *bu;
4017 readconf_driver_init(US"authenticator",
4018 (driver_instance **)(&auths), /* chain anchor */
4019 (driver_info *)auths_available, /* available drivers */
4020 sizeof(auth_info), /* size of info block */
4021 &auth_defaults, /* default values for generic options */
4022 sizeof(auth_instance), /* size of instance block */
4023 optionlist_auths, /* generic options */
4024 optionlist_auths_size);
4026 for (au = auths; au != NULL; au = au->next)
4028 if (au->public_name == NULL)
4029 log_write(0, LOG_PANIC_DIE|LOG_CONFIG, "no public name specified for "
4030 "the %s authenticator", au->name);
4031 for (bu = au->next; bu != NULL; bu = bu->next)
4033 if (strcmpic(au->public_name, bu->public_name) == 0)
4035 if ((au->client && bu->client) || (au->server && bu->server))
4036 log_write(0, LOG_PANIC_DIE|LOG_CONFIG, "two %s authenticators "
4037 "(%s and %s) have the same public name (%s)",
4038 (au->client)? US"client" : US"server", au->name, bu->name,
4048 /*************************************************
4049 * Read ACL information *
4050 *************************************************/
4052 /* If this run of Exim is not doing something that involves receiving a
4053 message, we can just skip over the ACL information. No need to parse it.
4055 First, we have a function for acl_read() to call back to get the next line. We
4056 need to remember the line we passed, because at the end it will contain the
4057 name of the next ACL. */
4059 static uschar *acl_line;
4064 acl_line = get_config_line();
4069 /* Now the main function:
4080 /* Read each ACL and add it into the tree. Macro (re)definitions are allowed
4083 acl_line = get_config_line();
4085 while(acl_line != NULL)
4091 p = readconf_readname(name, sizeof(name), acl_line);
4092 if (isupper(*name) && *p == '=')
4094 read_macro_assignment(acl_line);
4095 acl_line = get_config_line();
4099 if (*p != ':' || name[0] == 0)
4100 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "missing or malformed ACL name");
4102 node = store_get(sizeof(tree_node) + Ustrlen(name));
4103 Ustrcpy(node->name, name);
4104 if (!tree_insertnode(&acl_anchor, node))
4105 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
4106 "there are two ACLs called \"%s\"", name);
4108 node->data.ptr = acl_read(acl_callback, &error);
4110 if (node->data.ptr == NULL && error != NULL)
4111 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "error in ACL: %s", error);
4117 /*************************************************
4118 * Read configuration for local_scan() *
4119 *************************************************/
4121 /* This function is called after "begin local_scan" is encountered in the
4122 configuration file. If the local_scan() function allows for configuration
4123 options, we can process them. Otherwise, we expire in a panic.
4130 local_scan_init(void)
4132 #ifndef LOCAL_SCAN_HAS_OPTIONS
4133 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "local_scan() options not supported: "
4134 "(LOCAL_SCAN_HAS_OPTIONS not defined in Local/Makefile)");
4138 while ((p = get_config_line()) != NULL)
4140 (void) readconf_handle_option(p, local_scan_options, local_scan_options_count,
4141 NULL, US"local_scan option \"%s\" unknown");
4148 /*************************************************
4149 * Read rest of configuration (after main) *
4150 *************************************************/
4152 /* This function reads the rest of the runtime configuration, after the main
4153 configuration. It is called only when actually needed. Each subsequent section
4154 of the configuration starts with a line of the form
4158 where the name is "routers", "transports", etc. A section is terminated by
4159 hitting the next "begin" line, and the next name is left in next_section.
4160 Because it may confuse people as to whether the names are singular or plural,
4161 we add "s" if it's missing. There is always enough room in next_section for
4162 this. This function is basically just a switch.
4168 static uschar *section_list[] = {
4182 while(next_section[0] != 0)
4186 int last = sizeof(section_list) / sizeof(uschar *);
4188 int n = Ustrlen(next_section);
4190 if (tolower(next_section[n-1]) != 's') Ustrcpy(next_section+n, "s");
4194 int c = strcmpic(next_section, section_list[mid]);
4196 if (c > 0) first = mid + 1; else last = mid;
4198 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
4199 "\"%.*s\" is not a known configuration section name", n, next_section);
4200 mid = (last + first)/2;
4204 if (((had ^= bit) & bit) == 0)
4205 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
4206 "\"%.*s\" section is repeated in the configuration file", n,
4211 case 0: readconf_acl(); break;
4212 case 1: auths_init(); break;
4213 case 2: local_scan_init(); break;
4214 case 3: readconf_retries(); break;
4215 case 4: readconf_rewrites(); break;
4216 case 5: route_init(); break;
4217 case 6: transport_init(); break;
4221 (void)fclose(config_file);
4226 /* End of readconf.c */