1 /*************************************************
2 * Exim - an Internet mail transport agent *
3 *************************************************/
5 /* Copyright (c) The Exim Maintainers 2020 - 2023 */
6 /* Copyright (c) University of Cambridge 1995 - 2018 */
7 /* See the file NOTICE for conditions of use and distribution. */
8 /* SPDX-License-Identifier: GPL-2.0-or-later */
10 /* Functions for reading the configuration file, and for displaying
11 overall configuration values. Thanks to Brian Candler for the original
12 implementation of the conditional .ifdef etc. */
17 # include "macro_predef.h"
20 #define READCONF_DEBUG if (FALSE) /* Change to TRUE to enable */
23 static uschar * syslog_facility_str;
24 static void fn_smtp_receive_timeout(const uschar *, const uschar *, unsigned);
26 /*************************************************
27 * Main configuration options *
28 *************************************************/
30 /* The list of options that can be set in the main configuration file. This
31 must be in alphabetic order because it is searched by binary chop. */
33 static optionlist optionlist_config[] = {
34 { "*set_exim_group", opt_bool|opt_hidden, {&exim_gid_set} },
35 { "*set_exim_user", opt_bool|opt_hidden, {&exim_uid_set} },
36 { "*set_system_filter_group", opt_bool|opt_hidden, {&system_filter_gid_set} },
37 { "*set_system_filter_user", opt_bool|opt_hidden, {&system_filter_uid_set} },
38 { "accept_8bitmime", opt_bool, {&accept_8bitmime} },
39 { "acl_not_smtp", opt_stringptr, {&acl_not_smtp} },
40 #ifdef WITH_CONTENT_SCAN
41 { "acl_not_smtp_mime", opt_stringptr, {&acl_not_smtp_mime} },
43 { "acl_not_smtp_start", opt_stringptr, {&acl_not_smtp_start} },
44 { "acl_smtp_auth", opt_stringptr, {&acl_smtp_auth} },
45 { "acl_smtp_connect", opt_stringptr, {&acl_smtp_connect} },
46 { "acl_smtp_data", opt_stringptr, {&acl_smtp_data} },
48 { "acl_smtp_data_prdr", opt_stringptr, {&acl_smtp_data_prdr} },
51 { "acl_smtp_dkim", opt_stringptr, {&acl_smtp_dkim} },
53 { "acl_smtp_etrn", opt_stringptr, {&acl_smtp_etrn} },
54 { "acl_smtp_expn", opt_stringptr, {&acl_smtp_expn} },
55 { "acl_smtp_helo", opt_stringptr, {&acl_smtp_helo} },
56 { "acl_smtp_mail", opt_stringptr, {&acl_smtp_mail} },
57 { "acl_smtp_mailauth", opt_stringptr, {&acl_smtp_mailauth} },
58 #ifdef WITH_CONTENT_SCAN
59 { "acl_smtp_mime", opt_stringptr, {&acl_smtp_mime} },
61 { "acl_smtp_notquit", opt_stringptr, {&acl_smtp_notquit} },
62 { "acl_smtp_predata", opt_stringptr, {&acl_smtp_predata} },
63 { "acl_smtp_quit", opt_stringptr, {&acl_smtp_quit} },
64 { "acl_smtp_rcpt", opt_stringptr, {&acl_smtp_rcpt} },
66 { "acl_smtp_starttls", opt_stringptr, {&acl_smtp_starttls} },
68 { "acl_smtp_vrfy", opt_stringptr, {&acl_smtp_vrfy} },
69 { "add_environment", opt_stringptr, {&add_environment} },
70 { "admin_groups", opt_gidlist, {&admin_groups} },
71 { "allow_domain_literals", opt_bool, {&allow_domain_literals} },
72 { "allow_mx_to_ip", opt_bool, {&allow_mx_to_ip} },
73 { "allow_utf8_domains", opt_bool, {&allow_utf8_domains} },
74 { "auth_advertise_hosts", opt_stringptr, {&auth_advertise_hosts} },
75 { "auto_thaw", opt_time, {&auto_thaw} },
76 #ifdef WITH_CONTENT_SCAN
77 { "av_scanner", opt_stringptr, {&av_scanner} },
79 { "bi_command", opt_stringptr, {&bi_command} },
80 #ifdef EXPERIMENTAL_BRIGHTMAIL
81 { "bmi_config_file", opt_stringptr, {&bmi_config_file} },
83 { "bounce_message_file", opt_stringptr, {&bounce_message_file} },
84 { "bounce_message_text", opt_stringptr, {&bounce_message_text} },
85 { "bounce_return_body", opt_bool, {&bounce_return_body} },
86 { "bounce_return_linesize_limit", opt_mkint, {&bounce_return_linesize_limit} },
87 { "bounce_return_message", opt_bool, {&bounce_return_message} },
88 { "bounce_return_size_limit", opt_mkint, {&bounce_return_size_limit} },
89 { "bounce_sender_authentication",opt_stringptr,{&bounce_sender_authentication} },
90 { "callout_domain_negative_expire", opt_time, {&callout_cache_domain_negative_expire} },
91 { "callout_domain_positive_expire", opt_time, {&callout_cache_domain_positive_expire} },
92 { "callout_negative_expire", opt_time, {&callout_cache_negative_expire} },
93 { "callout_positive_expire", opt_time, {&callout_cache_positive_expire} },
94 { "callout_random_local_part",opt_stringptr, {&callout_random_local_part} },
95 { "check_log_inodes", opt_int, {&check_log_inodes} },
96 { "check_log_space", opt_Kint, {&check_log_space} },
97 { "check_rfc2047_length", opt_bool, {&check_rfc2047_length} },
98 { "check_spool_inodes", opt_int, {&check_spool_inodes} },
99 { "check_spool_space", opt_Kint, {&check_spool_space} },
100 { "chunking_advertise_hosts", opt_stringptr, {&chunking_advertise_hosts} },
101 { "commandline_checks_require_admin", opt_bool,{&commandline_checks_require_admin} },
102 { "daemon_smtp_port", opt_stringptr|opt_hidden, {&daemon_smtp_port} },
103 { "daemon_smtp_ports", opt_stringptr, {&daemon_smtp_port} },
104 { "daemon_startup_retries", opt_int, {&daemon_startup_retries} },
105 { "daemon_startup_sleep", opt_time, {&daemon_startup_sleep} },
106 #ifdef EXPERIMENTAL_DCC
107 { "dcc_direct_add_header", opt_bool, {&dcc_direct_add_header} },
108 { "dccifd_address", opt_stringptr, {&dccifd_address} },
109 { "dccifd_options", opt_stringptr, {&dccifd_options} },
111 { "debug_store", opt_bool, {&debug_store} },
112 { "delay_warning", opt_timelist, {&delay_warning} },
113 { "delay_warning_condition", opt_stringptr, {&delay_warning_condition} },
114 { "deliver_drop_privilege", opt_bool, {&deliver_drop_privilege} },
115 { "deliver_queue_load_max", opt_fixed, {&deliver_queue_load_max} },
116 { "delivery_date_remove", opt_bool, {&delivery_date_remove} },
117 #ifdef ENABLE_DISABLE_FSYNC
118 { "disable_fsync", opt_bool, {&disable_fsync} },
120 { "disable_ipv6", opt_bool, {&disable_ipv6} },
122 { "dkim_verify_hashes", opt_stringptr, {&dkim_verify_hashes} },
123 { "dkim_verify_keytypes", opt_stringptr, {&dkim_verify_keytypes} },
124 { "dkim_verify_min_keysizes", opt_stringptr, {&dkim_verify_min_keysizes} },
125 { "dkim_verify_minimal", opt_bool, {&dkim_verify_minimal} },
126 { "dkim_verify_signers", opt_stringptr, {&dkim_verify_signers} },
129 { "dmarc_forensic_sender", opt_stringptr, {&dmarc_forensic_sender} },
130 { "dmarc_history_file", opt_stringptr, {&dmarc_history_file} },
131 { "dmarc_tld_file", opt_stringptr, {&dmarc_tld_file} },
133 { "dns_again_means_nonexist", opt_stringptr, {&dns_again_means_nonexist} },
134 { "dns_check_names_pattern", opt_stringptr, {&check_dns_names_pattern} },
135 { "dns_cname_loops", opt_int, {&dns_cname_loops} },
136 { "dns_csa_search_limit", opt_int, {&dns_csa_search_limit} },
137 { "dns_csa_use_reverse", opt_bool, {&dns_csa_use_reverse} },
138 { "dns_dnssec_ok", opt_int, {&dns_dnssec_ok} },
139 { "dns_ipv4_lookup", opt_stringptr, {&dns_ipv4_lookup} },
140 { "dns_retrans", opt_time, {&dns_retrans} },
141 { "dns_retry", opt_int, {&dns_retry} },
142 { "dns_trust_aa", opt_stringptr, {&dns_trust_aa} },
143 { "dns_use_edns0", opt_int, {&dns_use_edns0} },
144 /* This option is now a no-op, retained for compatibility */
145 { "drop_cr", opt_bool, {&drop_cr} },
146 /*********************************************************/
147 { "dsn_advertise_hosts", opt_stringptr, {&dsn_advertise_hosts} },
148 { "dsn_from", opt_stringptr, {&dsn_from} },
149 { "envelope_to_remove", opt_bool, {&envelope_to_remove} },
150 { "errors_copy", opt_stringptr, {&errors_copy} },
151 { "errors_reply_to", opt_stringptr, {&errors_reply_to} },
152 #ifndef DISABLE_EVENT
153 { "event_action", opt_stringptr, {&event_action} },
155 { "exim_group", opt_gid, {&exim_gid} },
156 { "exim_path", opt_stringptr, {&exim_path} },
157 { "exim_user", opt_uid, {&exim_uid} },
158 { "exim_version", opt_stringptr, {&version_string} },
159 { "extra_local_interfaces", opt_stringptr, {&extra_local_interfaces} },
160 { "extract_addresses_remove_arguments", opt_bool, {&extract_addresses_remove_arguments} },
161 { "finduser_retries", opt_int, {&finduser_retries} },
162 { "freeze_tell", opt_stringptr, {&freeze_tell} },
163 { "gecos_name", opt_stringptr, {&gecos_name} },
164 { "gecos_pattern", opt_stringptr, {&gecos_pattern} },
166 { "gnutls_allow_auto_pkcs11", opt_bool, {&gnutls_allow_auto_pkcs11} },
167 { "gnutls_compat_mode", opt_bool, {&gnutls_compat_mode} },
169 { "header_line_maxsize", opt_int, {&header_line_maxsize} },
170 { "header_maxsize", opt_int, {&header_maxsize} },
171 { "headers_charset", opt_stringptr, {&headers_charset} },
172 { "helo_accept_junk_hosts", opt_stringptr, {&helo_accept_junk_hosts} },
173 { "helo_allow_chars", opt_stringptr, {&helo_allow_chars} },
174 { "helo_lookup_domains", opt_stringptr, {&helo_lookup_domains} },
175 { "helo_try_verify_hosts", opt_stringptr, {&helo_try_verify_hosts} },
176 { "helo_verify_hosts", opt_stringptr, {&helo_verify_hosts} },
177 { "hold_domains", opt_stringptr, {&hold_domains} },
178 { "host_lookup", opt_stringptr, {&host_lookup} },
179 { "host_lookup_order", opt_stringptr, {&host_lookup_order} },
180 { "host_reject_connection", opt_stringptr, {&host_reject_connection} },
181 { "hosts_connection_nolog", opt_stringptr, {&hosts_connection_nolog} },
183 { "hosts_proxy", opt_stringptr, {&hosts_proxy} },
186 { "hosts_require_alpn", opt_stringptr, {&hosts_require_alpn} },
188 { "hosts_require_helo", opt_stringptr, {&hosts_require_helo} },
189 { "hosts_treat_as_local", opt_stringptr, {&hosts_treat_as_local} },
190 #ifdef EXPERIMENTAL_XCLIENT
191 { "hosts_xclient", opt_stringptr, {&hosts_xclient} },
194 { "ibase_servers", opt_stringptr, {&ibase_servers} },
196 { "ignore_bounce_errors_after", opt_time, {&ignore_bounce_errors_after} },
197 { "ignore_fromline_hosts", opt_stringptr, {&ignore_fromline_hosts} },
198 { "ignore_fromline_local", opt_bool, {&ignore_fromline_local} },
199 { "keep_environment", opt_stringptr, {&keep_environment} },
200 { "keep_malformed", opt_time, {&keep_malformed} },
202 { "ldap_ca_cert_dir", opt_stringptr, {&eldap_ca_cert_dir} },
203 { "ldap_ca_cert_file", opt_stringptr, {&eldap_ca_cert_file} },
204 { "ldap_cert_file", opt_stringptr, {&eldap_cert_file} },
205 { "ldap_cert_key", opt_stringptr, {&eldap_cert_key} },
206 { "ldap_cipher_suite", opt_stringptr, {&eldap_cipher_suite} },
207 { "ldap_default_servers", opt_stringptr, {&eldap_default_servers} },
208 { "ldap_require_cert", opt_stringptr, {&eldap_require_cert} },
209 { "ldap_start_tls", opt_bool, {&eldap_start_tls} },
210 { "ldap_version", opt_int, {&eldap_version} },
212 #ifndef DISABLE_ESMTP_LIMITS
213 { "limits_advertise_hosts", opt_stringptr, {&limits_advertise_hosts} },
215 { "local_from_check", opt_bool, {&local_from_check} },
216 { "local_from_prefix", opt_stringptr, {&local_from_prefix} },
217 { "local_from_suffix", opt_stringptr, {&local_from_suffix} },
218 { "local_interfaces", opt_stringptr, {&local_interfaces} },
219 #ifdef HAVE_LOCAL_SCAN
220 { "local_scan_timeout", opt_time, {&local_scan_timeout} },
222 { "local_sender_retain", opt_bool, {&local_sender_retain} },
223 { "localhost_number", opt_stringptr, {&host_number_string} },
224 { "log_file_path", opt_stringptr, {&log_file_path} },
225 { "log_selector", opt_stringptr, {&log_selector_string} },
226 { "log_timezone", opt_bool, {&log_timezone} },
227 { "lookup_open_max", opt_int, {&lookup_open_max} },
228 { "max_username_length", opt_int, {&max_username_length} },
229 { "message_body_newlines", opt_bool, {&message_body_newlines} },
230 { "message_body_visible", opt_mkint, {&message_body_visible} },
231 { "message_id_header_domain", opt_stringptr, {&message_id_domain} },
232 { "message_id_header_text", opt_stringptr, {&message_id_text} },
233 { "message_logs", opt_bool, {&message_logs} },
234 { "message_size_limit", opt_stringptr, {&message_size_limit} },
235 #ifdef SUPPORT_MOVE_FROZEN_MESSAGES
236 { "move_frozen_messages", opt_bool, {&move_frozen_messages} },
238 { "mua_wrapper", opt_bool, {&mua_wrapper} },
240 { "mysql_servers", opt_stringptr, {&mysql_servers} },
242 { "never_users", opt_uidlist, {&never_users} },
243 { "notifier_socket", opt_stringptr, {¬ifier_socket} },
245 { "openssl_options", opt_stringptr, {&openssl_options} },
248 { "oracle_servers", opt_stringptr, {&oracle_servers} },
250 { "panic_coredump", opt_bool, {&panic_coredump} },
251 { "percent_hack_domains", opt_stringptr, {&percent_hack_domains} },
253 { "perl_at_start", opt_bool, {&opt_perl_at_start} },
254 { "perl_startup", opt_stringptr, {&opt_perl_startup} },
255 { "perl_taintmode", opt_bool, {&opt_perl_taintmode} },
258 { "pgsql_servers", opt_stringptr, {&pgsql_servers} },
260 { "pid_file_path", opt_stringptr, {&pid_file_path} },
261 { "pipelining_advertise_hosts", opt_stringptr, {&pipelining_advertise_hosts} },
262 #ifndef DISABLE_PIPE_CONNECT
263 { "pipelining_connect_advertise_hosts", opt_stringptr,
264 {&pipe_connect_advertise_hosts} },
267 { "prdr_enable", opt_bool, {&prdr_enable} },
269 { "preserve_message_logs", opt_bool, {&preserve_message_logs} },
270 { "primary_hostname", opt_stringptr, {&primary_hostname} },
271 { "print_topbitchars", opt_bool, {&print_topbitchars} },
272 { "process_log_path", opt_stringptr, {&process_log_path} },
273 { "prod_requires_admin", opt_bool, {&prod_requires_admin} },
275 { "proxy_protocol_timeout", opt_time, {&proxy_protocol_timeout} },
277 { "qualify_domain", opt_stringptr, {&qualify_domain_sender} },
278 { "qualify_recipient", opt_stringptr, {&qualify_domain_recipient} },
279 { "queue_domains", opt_stringptr, {&queue_domains} },
280 #ifndef DISABLE_QUEUE_RAMP
281 { "queue_fast_ramp", opt_bool, {&queue_fast_ramp} },
283 { "queue_list_requires_admin",opt_bool, {&queue_list_requires_admin} },
284 { "queue_only", opt_bool, {&queue_only} },
285 { "queue_only_file", opt_stringptr, {&queue_only_file} },
286 { "queue_only_load", opt_fixed, {&queue_only_load} },
287 { "queue_only_load_latch", opt_bool, {&queue_only_load_latch} },
288 { "queue_only_override", opt_bool, {&queue_only_override} },
289 { "queue_run_in_order", opt_bool, {&queue_run_in_order} },
290 { "queue_run_max", opt_stringptr, {&queue_run_max} },
291 { "queue_smtp_domains", opt_stringptr, {&queue_smtp_domains} },
292 { "receive_timeout", opt_time, {&receive_timeout} },
293 { "received_header_text", opt_stringptr, {&received_header_text} },
294 { "received_headers_max", opt_int, {&received_headers_max} },
295 { "recipient_unqualified_hosts", opt_stringptr, {&recipient_unqualified_hosts} },
296 { "recipients_max", opt_stringptr, {&recipients_max} },
297 { "recipients_max_reject", opt_bool, {&recipients_max_reject} },
299 { "redis_servers", opt_stringptr, {&redis_servers} },
301 { "remote_max_parallel", opt_int, {&remote_max_parallel} },
302 { "remote_sort_domains", opt_stringptr, {&remote_sort_domains} },
303 { "retry_data_expire", opt_time, {&retry_data_expire} },
304 { "retry_interval_max", opt_time, {&retry_interval_max} },
305 { "return_path_remove", opt_bool, {&return_path_remove} },
306 { "return_size_limit", opt_mkint|opt_hidden, {&bounce_return_size_limit} },
307 { "rfc1413_hosts", opt_stringptr, {&rfc1413_hosts} },
308 { "rfc1413_query_timeout", opt_time, {&rfc1413_query_timeout} },
309 { "sender_unqualified_hosts", opt_stringptr, {&sender_unqualified_hosts} },
310 { "slow_lookup_log", opt_int, {&slow_lookup_log} },
311 { "smtp_accept_keepalive", opt_bool, {&smtp_accept_keepalive} },
312 { "smtp_accept_max", opt_int, {&smtp_accept_max} },
313 { "smtp_accept_max_nonmail", opt_int, {&smtp_accept_max_nonmail} },
314 { "smtp_accept_max_nonmail_hosts", opt_stringptr, {&smtp_accept_max_nonmail_hosts} },
315 { "smtp_accept_max_per_connection", opt_stringptr, {&smtp_accept_max_per_connection} },
316 { "smtp_accept_max_per_host", opt_stringptr, {&smtp_accept_max_per_host} },
317 { "smtp_accept_queue", opt_int, {&smtp_accept_queue} },
318 { "smtp_accept_queue_per_connection", opt_int, {&smtp_accept_queue_per_connection} },
319 { "smtp_accept_reserve", opt_int, {&smtp_accept_reserve} },
320 { "smtp_active_hostname", opt_stringptr, {&raw_active_hostname} },
321 { "smtp_backlog_monitor", opt_int, {&smtp_backlog_monitor} },
322 { "smtp_banner", opt_stringptr, {&smtp_banner} },
323 { "smtp_check_spool_space", opt_bool, {&smtp_check_spool_space} },
324 { "smtp_connect_backlog", opt_int, {&smtp_connect_backlog} },
325 { "smtp_enforce_sync", opt_bool, {&smtp_enforce_sync} },
326 { "smtp_etrn_command", opt_stringptr, {&smtp_etrn_command} },
327 { "smtp_etrn_serialize", opt_bool, {&smtp_etrn_serialize} },
328 { "smtp_load_reserve", opt_fixed, {&smtp_load_reserve} },
329 { "smtp_max_synprot_errors", opt_int, {&smtp_max_synprot_errors} },
330 { "smtp_max_unknown_commands",opt_int, {&smtp_max_unknown_commands} },
331 { "smtp_ratelimit_hosts", opt_stringptr, {&smtp_ratelimit_hosts} },
332 { "smtp_ratelimit_mail", opt_stringptr, {&smtp_ratelimit_mail} },
333 { "smtp_ratelimit_rcpt", opt_stringptr, {&smtp_ratelimit_rcpt} },
334 { "smtp_receive_timeout", opt_func, {.fn = &fn_smtp_receive_timeout} },
335 { "smtp_reserve_hosts", opt_stringptr, {&smtp_reserve_hosts} },
336 { "smtp_return_error_details",opt_bool, {&smtp_return_error_details} },
338 { "smtputf8_advertise_hosts", opt_stringptr, {&smtputf8_advertise_hosts} },
340 #ifdef WITH_CONTENT_SCAN
341 { "spamd_address", opt_stringptr, {&spamd_address} },
344 { "spf_guess", opt_stringptr, {&spf_guess} },
345 { "spf_smtp_comment_template",opt_stringptr, {&spf_smtp_comment_template} },
347 { "split_spool_directory", opt_bool, {&split_spool_directory} },
348 { "spool_directory", opt_stringptr, {&spool_directory} },
349 { "spool_wireformat", opt_bool, {&spool_wireformat} },
351 { "sqlite_dbfile", opt_stringptr, {&sqlite_dbfile} },
352 { "sqlite_lock_timeout", opt_int, {&sqlite_lock_timeout} },
354 { "strict_acl_vars", opt_bool, {&strict_acl_vars} },
355 { "strip_excess_angle_brackets", opt_bool, {&strip_excess_angle_brackets} },
356 { "strip_trailing_dot", opt_bool, {&strip_trailing_dot} },
357 { "syslog_duplication", opt_bool, {&syslog_duplication} },
358 { "syslog_facility", opt_stringptr, {&syslog_facility_str} },
359 { "syslog_pid", opt_bool, {&syslog_pid} },
360 { "syslog_processname", opt_stringptr, {&syslog_processname} },
361 { "syslog_timestamp", opt_bool, {&syslog_timestamp} },
362 { "system_filter", opt_stringptr, {&system_filter} },
363 { "system_filter_directory_transport", opt_stringptr,{&system_filter_directory_transport} },
364 { "system_filter_file_transport",opt_stringptr,{&system_filter_file_transport} },
365 { "system_filter_group", opt_gid, {&system_filter_gid} },
366 { "system_filter_pipe_transport",opt_stringptr,{&system_filter_pipe_transport} },
367 { "system_filter_reply_transport",opt_stringptr,{&system_filter_reply_transport} },
368 { "system_filter_user", opt_uid, {&system_filter_uid} },
369 { "tcp_nodelay", opt_bool, {&tcp_nodelay} },
370 #ifdef USE_TCP_WRAPPERS
371 { "tcp_wrappers_daemon_name", opt_stringptr, {&tcp_wrappers_daemon_name} },
373 { "timeout_frozen_after", opt_time, {&timeout_frozen_after} },
374 { "timezone", opt_stringptr, {&timezone_string} },
375 { "tls_advertise_hosts", opt_stringptr, {&tls_advertise_hosts} },
377 { "tls_alpn", opt_stringptr, {&tls_alpn} },
378 { "tls_certificate", opt_stringptr, {&tls_certificate} },
379 { "tls_crl", opt_stringptr, {&tls_crl} },
380 { "tls_dh_max_bits", opt_int, {&tls_dh_max_bits} },
381 { "tls_dhparam", opt_stringptr, {&tls_dhparam} },
382 { "tls_eccurve", opt_stringptr, {&tls_eccurve} },
383 # ifndef DISABLE_OCSP
384 { "tls_ocsp_file", opt_stringptr, {&tls_ocsp_file} },
386 { "tls_on_connect_ports", opt_stringptr, {&tls_in.on_connect_ports} },
387 { "tls_privatekey", opt_stringptr, {&tls_privatekey} },
388 { "tls_remember_esmtp", opt_bool, {&tls_remember_esmtp} },
389 { "tls_require_ciphers", opt_stringptr, {&tls_require_ciphers} },
390 # ifndef DISABLE_TLS_RESUME
391 { "tls_resumption_hosts", opt_stringptr, {&tls_resumption_hosts} },
393 { "tls_try_verify_hosts", opt_stringptr, {&tls_try_verify_hosts} },
394 { "tls_verify_certificates", opt_stringptr, {&tls_verify_certificates} },
395 { "tls_verify_hosts", opt_stringptr, {&tls_verify_hosts} },
397 { "trusted_groups", opt_gidlist, {&trusted_groups} },
398 { "trusted_users", opt_uidlist, {&trusted_users} },
399 { "unknown_login", opt_stringptr, {&unknown_login} },
400 { "unknown_username", opt_stringptr, {&unknown_username} },
401 { "untrusted_set_sender", opt_stringptr, {&untrusted_set_sender} },
402 { "uucp_from_pattern", opt_stringptr, {&uucp_from_pattern} },
403 { "uucp_from_sender", opt_stringptr, {&uucp_from_sender} },
404 { "warn_message_file", opt_stringptr, {&warn_message_file} },
405 { "write_rejectlog", opt_bool, {&write_rejectlog} },
409 static int optionlist_config_size = nelem(optionlist_config);
416 fn_smtp_receive_timeout(const uschar * name, const uschar * str, unsigned flags) {/*Dummy*/}
421 options_from_list(optionlist_config, nelem(optionlist_config), US"MAIN", NULL);
427 uschar buf[EXIM_DRIVERNAME_MAX];
429 options_from_list(optionlist_auths, optionlist_auths_size, US"AUTHENTICATORS", NULL);
431 for (struct auth_info * ai = auths_available; ai->driver_name[0]; ai++)
433 spf(buf, sizeof(buf), US"_DRIVER_AUTHENTICATOR_%T", ai->driver_name);
434 builtin_macro_create(buf);
435 options_from_list(ai->options, (unsigned)*ai->options_count, US"AUTHENTICATOR", ai->driver_name);
437 if (ai->macros_create) (ai->macros_create)();
442 options_logging(void)
444 uschar buf[EXIM_DRIVERNAME_MAX];
446 for (bit_table * bp = log_options; bp < log_options + log_options_count; bp++)
448 spf(buf, sizeof(buf), US"_LOG_%T", bp->name);
449 builtin_macro_create(buf);
454 #else /*!MACRO_PREDEF*/
456 extern char **environ;
458 static void save_config_line(const uschar* line);
459 static void save_config_position(const uschar *file, int line);
460 static void print_config(BOOL admin, BOOL terse);
463 #define CSTATE_STACK_SIZE 10
465 const uschar *config_directory = NULL;
468 /* Structure for chain (stack) of .included files */
470 typedef struct config_file_item {
471 struct config_file_item *next;
472 const uschar *filename;
473 const uschar *directory;
478 /* Structure for chain of configuration lines (-bP config) */
480 typedef struct config_line_item {
481 struct config_line_item *next;
485 static config_line_item* config_lines;
487 /* Structure of table of conditional words and their state transitions */
489 typedef struct cond_item {
497 /* Structure of table of syslog facility names and values */
499 typedef struct syslog_fac_item {
505 static const uschar * const hidden = US"<value not displayable>";
507 /* Static variables */
509 static config_file_item *config_file_stack = NULL; /* For includes */
511 static uschar *syslog_facility_str = NULL;
512 static uschar next_section[24];
513 static uschar time_buffer[24];
515 /* State variables for conditional loading (.ifdef / .else / .endif) */
517 static int cstate = 0;
518 static int cstate_stack_ptr = -1;
519 static int cstate_stack[CSTATE_STACK_SIZE];
521 /* Table of state transitions for handling conditional inclusions. There are
522 four possible state transitions:
526 .elifdef true (or .else)
529 .endif just causes the previous cstate to be popped off the stack */
531 static int next_cstate[3][4] =
533 /* State 0: reading from file, or reading until next .else or .endif */
535 /* State 1: condition failed, skipping until next .else or .endif */
537 /* State 2: skipping until .endif */
541 /* Table of conditionals and the states to set. For each name, there are four
542 values: the length of the name (to save computing it each time), the state to
543 set if a macro was found in the line, the state to set if a macro was not found
544 in the line, and a stack manipulation setting which is:
546 -1 pull state value off the stack
547 0 don't alter the stack
548 +1 push value onto stack, before setting new state
551 static cond_item cond_list[] = {
552 { US"ifdef", 5, 0, 1, 1 },
553 { US"ifndef", 6, 1, 0, 1 },
554 { US"elifdef", 7, 2, 3, 0 },
555 { US"elifndef", 8, 3, 2, 0 },
556 { US"else", 4, 2, 2, 0 },
557 { US"endif", 5, 0, 0, -1 }
560 static int cond_list_size = sizeof(cond_list)/sizeof(cond_item);
562 /* Table of syslog facility names and their values */
564 static syslog_fac_item syslog_list[] = {
565 { US"mail", LOG_MAIL },
566 { US"user", LOG_USER },
567 { US"news", LOG_NEWS },
568 { US"uucp", LOG_UUCP },
569 { US"local0", LOG_LOCAL0 },
570 { US"local1", LOG_LOCAL1 },
571 { US"local2", LOG_LOCAL2 },
572 { US"local3", LOG_LOCAL3 },
573 { US"local4", LOG_LOCAL4 },
574 { US"local5", LOG_LOCAL5 },
575 { US"local6", LOG_LOCAL6 },
576 { US"local7", LOG_LOCAL7 },
577 { US"daemon", LOG_DAEMON }
580 static int syslog_list_size = sizeof(syslog_list)/sizeof(syslog_fac_item);
583 #define opt_fn_print BIT(0)
584 #define opt_fn_print_label BIT(1)
587 /*************************************************
588 * Find the name of an option *
589 *************************************************/
591 /* This function is to aid debugging. Various functions take arguments that are
592 pointer variables in the options table or in option tables for various drivers.
593 For debugging output, it is useful to be able to find the name of the option
594 which is currently being processed. This function finds it, if it exists, by
595 searching the table(s) for a value with the given content.
597 Arguments: a value that is presumed to be in the table above
598 Returns: the option name, or an empty string
602 readconf_find_option(void * listptr)
604 uschar * list = * USS listptr;
605 const uschar * name = NULL, * drname = NULL;
607 for (optionlist * o = optionlist_config; /* main-config options */
608 o < optionlist_config + optionlist_config_size; o++)
609 if (listptr == o->v.value)
612 for (router_instance * r = routers; r; r = r->next)
613 if (router_name && Ustrcmp(r->name, router_name) == 0)
615 const router_info * ri = r->info;
617 /* Check for a listptr match first */
619 for (optionlist * o = optionlist_routers; /* generic options */
620 o < optionlist_routers + optionlist_routers_size; o++)
621 if ( (o->type & opt_mask) == opt_stringptr
622 && listptr == CS r + o->v.offset)
625 for (optionlist * o = ri->options; /* private options */
626 o < ri->options + *ri->options_count; o++)
627 if ( (o->type & opt_mask) == opt_stringptr
628 && listptr == CS (r->options_block) + o->v.offset)
631 /* Check for a list addr match, unless null */
635 for (optionlist * o = optionlist_routers; /* generic options */
636 o < optionlist_routers + optionlist_routers_size; o++)
637 if ( (o->type & opt_mask) == opt_stringptr
638 && list == * USS(CS r + o->v.offset))
639 if (name) return string_sprintf("DUP: %s %s vs. %s %s",
640 drname, name, r->name, o->name);
641 else { name = US o->name; drname = r->name; }
643 for (optionlist * o = ri->options; /* private options */
644 o < ri->options + *ri->options_count; o++)
645 if ( (o->type & opt_mask) == opt_stringptr
646 && list == * USS(CS (r->options_block) + o->v.offset))
647 if (name) return string_sprintf("DUP: %s %s vs. %s %s",
648 drname, name, r->name, o->name);
649 else { name = US o->name; drname = r->name; }
652 for (transport_instance * t = transports; t; t = t->next)
653 if (transport_name && Ustrcmp(t->name, transport_name) == 0)
655 const transport_info * ti = t->info;
657 /* Check for a listptr match first */
659 for (optionlist * o = optionlist_transports; /* generic options */
660 o < optionlist_transports + optionlist_transports_size; o++)
661 if ( (o->type & opt_mask) == opt_stringptr
662 && listptr == CS t + o->v.offset)
665 for (optionlist * o = ti->options; /* private options */
666 o < ti->options + *ti->options_count; o++)
667 if ( (o->type & opt_mask) == opt_stringptr
668 && listptr == CS t->options_block + o->v.offset)
671 /* Check for a list addr match, unless null */
675 for (optionlist * o = optionlist_transports; /* generic options */
676 o < optionlist_transports + optionlist_transports_size; o++)
677 if ( (o->type & opt_mask) == opt_stringptr
678 && list == * USS(CS t + o->v.offset))
679 if (name) return string_sprintf("DUP: %s %s vs. %s %s",
680 drname, name, t->name, o->name);
681 else { name = US o->name; drname = t->name; }
683 for (optionlist * o = ti->options; /* private options */
684 o < ti->options + *ti->options_count; o++)
685 if ( (o->type & opt_mask) == opt_stringptr
686 && list == * USS(CS t->options_block + o->v.offset))
687 if (name) return string_sprintf("DUP: %s %s vs. %s %s",
688 drname, name, t->name, o->name);
689 else { name = US o->name; drname = t->name; }
692 return name ? name : US"";
698 /*************************************************
699 * Deal with an assignment to a macro *
700 *************************************************/
702 /* We have a new definition; append to the list.
705 name Name of the macro; will be copied
706 val Expansion result for the macro; will be copied
710 macro_create(const uschar * name, const uschar * val, BOOL command_line)
712 macro_item * m = store_get(sizeof(macro_item), GET_UNTAINTED);
714 READCONF_DEBUG fprintf(stderr, "%s: '%s' '%s'\n", __FUNCTION__, name, val);
716 m->command_line = command_line;
717 m->namelen = Ustrlen(name);
718 m->replen = Ustrlen(val);
719 m->name = string_copy(name);
720 m->replacement = string_copy(val);
732 /* This function is called when a line that starts with an upper case letter is
733 encountered. The argument "line" should contain a complete logical line, and
734 start with the first letter of the macro name. The macro name and the
735 replacement text are extracted and stored. Redefinition of existing,
736 non-command line, macros is permitted using '==' instead of '='.
739 s points to the start of the logical line
741 Returns: FALSE iff fatal error
745 macro_read_assignment(uschar *s)
747 uschar name[EXIM_DRIVERNAME_MAX];
752 while (isalnum(*s) || *s == '_')
754 if (namelen >= sizeof(name) - 1)
756 log_write(0, LOG_PANIC|LOG_CONFIG_IN,
757 "macro name too long (maximum is " SIZE_T_FMT " characters)", sizeof(name) - 1);
760 name[namelen++] = *s++;
764 Uskip_whitespace(&s);
767 log_write(0, LOG_PANIC|LOG_CONFIG_IN, "malformed macro definition");
776 Uskip_whitespace(&s);
778 /* If an existing macro of the same name was defined on the command line, we
779 just skip this definition. It's an error to attempt to redefine a macro without
780 redef set to TRUE, or to redefine a macro when it hasn't been defined earlier.
781 It is also an error to define a macro whose name begins with the name of a
782 previously defined macro. This is the requirement that make using a tree
783 for macros hard; we must check all macros for the substring. Perhaps a
784 sorted list, and a bsearch, would work?
785 Note: it is documented that the other way round works. */
787 for (m = macros; m; m = m->next)
789 if (Ustrcmp(m->name, name) == 0)
791 if (!m->command_line && !redef)
793 log_write(0, LOG_CONFIG|LOG_PANIC, "macro \"%s\" is already "
794 "defined (use \"==\" if you want to redefine it)", name);
800 if (m->namelen < namelen && Ustrstr(name, m->name) != NULL)
802 log_write(0, LOG_CONFIG|LOG_PANIC, "\"%s\" cannot be defined as "
803 "a macro because previously defined macro \"%s\" is a substring",
808 /* We cannot have this test, because it is documented that a substring
809 macro is permitted (there is even an example).
811 * if (m->namelen > namelen && Ustrstr(m->name, name) != NULL)
812 * log_write(0, LOG_CONFIG|LOG_PANIC_DIE, "\"%s\" cannot be defined as "
813 * "a macro because it is a substring of previously defined macro \"%s\"",
818 /* Check for an overriding command-line definition. */
820 if (m && m->command_line) return TRUE;
822 /* Redefinition must refer to an existing macro. */
827 m->replen = Ustrlen(s);
828 m->replacement = string_copy(s);
832 log_write(0, LOG_CONFIG|LOG_PANIC, "can't redefine an undefined macro "
837 /* We have a new definition. */
839 (void) macro_create(name, s, FALSE);
847 /* Process line for macros. The line is in big_buffer starting at offset len.
848 Expand big_buffer if needed. Handle definitions of new macros, and
849 macro expansions, rewriting the line in the buffer.
852 len Offset in buffer of start of line
853 newlen Pointer to offset of end of line, updated on return
854 macro_found Pointer to return that a macro was expanded
856 Return: pointer to first nonblank char in line
860 macros_expand(int len, int * newlen, BOOL * macro_found)
862 uschar * ss = big_buffer + len;
865 /* Find the true start of the physical line - leading spaces are always
868 Uskip_whitespace(&ss);
870 /* Process the physical line for macros. If this is the start of the logical
871 line, skip over initial text at the start of the line if it starts with an
872 upper case character followed by a sequence of name characters and an equals
873 sign, because that is the definition of a new macro, and we don't do
874 replacement therein. */
877 if (len == 0 && isupper(*s))
879 while (isalnum(*s) || *s == '_') s++;
880 if (Uskip_whitespace(&s) != '=') s = ss; /* Not a macro definition */
883 /* Skip leading chars which cannot start a macro name, to avoid multiple
884 pointless rescans in Ustrstr calls. */
886 while (*s && !isupper(*s) && !(*s == '_' && isupper(s[1]))) s++;
888 /* For each defined macro, scan the line (from after XXX= if present),
889 replacing all occurrences of the macro. */
891 *macro_found = FALSE;
892 if (*s) for (macro_item * m = *s == '_' ? macros : macros_user; m; m = m->next)
897 while (*s && !isupper(*s) && !(*s == '_' && isupper(s[1]))) s++;
901 while ((p = Ustrstr(t, m->name)) != NULL)
905 READCONF_DEBUG fprintf(stderr, "%s: matched '%s' in '%.*s'\n", __FUNCTION__,
906 m->name, (int) Ustrlen(ss)-1, ss);
907 /* Expand the buffer if necessary */
909 while (*newlen - m->namelen + m->replen + 1 > big_buffer_size)
911 int newsize = big_buffer_size + BIG_BUFFER_SIZE;
912 uschar *newbuffer = store_malloc(newsize);
913 memcpy(newbuffer, big_buffer, *newlen + 1);
914 p = newbuffer + (p - big_buffer);
915 s = newbuffer + (s - big_buffer);
916 ss = newbuffer + (ss - big_buffer);
917 t = newbuffer + (t - big_buffer);
918 big_buffer_size = newsize;
919 store_free(big_buffer);
920 big_buffer = newbuffer;
923 /* Shuffle the remaining characters up or down in the buffer before
924 copying in the replacement text. Don't rescan the replacement for this
928 if ((moveby = m->replen - m->namelen) != 0)
930 memmove(p + m->replen, pp, (big_buffer + *newlen) - pp + 1);
933 Ustrncpy(p, m->replacement, m->replen);
935 while (*t && !isupper(*t) && !(*t == '_' && isupper(t[1]))) t++;
940 /* An empty macro replacement at the start of a line could mean that ss no
941 longer points to the first non-blank character. */
943 Uskip_whitespace(&ss);
947 /*************************************************
948 * Read configuration line *
949 *************************************************/
951 /* A logical line of text is read from the configuration file into the big
952 buffer, taking account of macros, .includes, and continuations. The size of
953 big_buffer is increased if necessary. The count of configuration lines is
954 maintained. Physical input lines starting with # (ignoring leading white space,
955 and after macro replacement) and empty logical lines are always ignored.
956 Leading and trailing spaces are removed.
958 If we hit a line of the form "begin xxxx", the xxxx is placed in the
959 next_section vector, and the function returns NULL, indicating the end of a
960 configuration section. On end-of-file, NULL is returned with next_section
965 Returns: a pointer to the first non-blank in the line,
966 or NULL if eof or end of section is reached
970 get_config_line(void)
972 int startoffset = 0; /* To first non-blank char in logical line */
973 int len = 0; /* Of logical line so far */
978 /* Loop for handling continuation lines, skipping comments, and dealing with
983 if (Ufgets(big_buffer+len, big_buffer_size-len, config_file) == NULL)
985 if (config_file_stack != NULL) /* EOF inside .include */
987 (void)fclose(config_file);
988 config_file = config_file_stack->file;
989 config_filename = config_file_stack->filename;
990 config_directory = config_file_stack->directory;
991 config_lineno = config_file_stack->lineno;
992 config_file_stack = config_file_stack->next;
994 save_config_position(config_filename, config_lineno);
998 /* EOF at top level */
1000 if (cstate_stack_ptr >= 0)
1001 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1002 "Unexpected end of configuration file: .endif missing");
1004 if (len != 0) break; /* EOF after continuation */
1005 next_section[0] = 0; /* EOF at start of logical line */
1010 newlen = len + Ustrlen(big_buffer + len);
1012 if (config_lines && config_lineno == 1)
1013 save_config_position(config_filename, config_lineno);
1015 /* Handle pathologically long physical lines - yes, it did happen - by
1016 extending big_buffer at this point. The code also copes with very long
1019 while (newlen == big_buffer_size - 1 && big_buffer[newlen - 1] != '\n')
1022 big_buffer_size += BIG_BUFFER_SIZE;
1023 newbuffer = store_malloc(big_buffer_size);
1025 /* This use of strcpy is OK because we know that the string in the old
1026 buffer is shorter than the new buffer. */
1028 Ustrcpy(newbuffer, big_buffer);
1029 store_free(big_buffer);
1030 big_buffer = newbuffer;
1031 if (Ufgets(big_buffer+newlen, big_buffer_size-newlen, config_file) == NULL)
1033 newlen += Ustrlen(big_buffer + newlen);
1036 ss = macros_expand(len, &newlen, ¯o_found);
1038 /* Check for comment lines - these are physical lines. */
1040 if (*ss == '#') continue;
1042 /* Handle conditionals, which are also applied to physical lines. Conditions
1043 are of the form ".ifdef ANYTEXT" and are treated as true if any macro
1044 expansion occurred on the rest of the line. A preliminary test for the leading
1045 '.' saves effort on most lines. */
1051 /* Search the list of conditional directives */
1053 for (i = 0; i < cond_list_size; i++)
1056 cond_item *c = cond_list+i;
1057 if (Ustrncmp(ss+1, c->name, c->namelen) != 0) continue;
1059 /* The following character must be white space or end of string */
1061 n = ss[1 + c->namelen];
1062 if (n != ' ' && n != 't' && n != '\n' && n != 0) break;
1064 /* .ifdef and .ifndef push the current state onto the stack, then set
1065 a new one from the table. Stack overflow is an error */
1069 if (cstate_stack_ptr >= CSTATE_STACK_SIZE - 1)
1070 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1071 ".%s nested too deeply", c->name);
1072 cstate_stack[++cstate_stack_ptr] = cstate;
1073 cstate = next_cstate[cstate][macro_found? c->action1 : c->action2];
1076 /* For any of the others, stack underflow is an error. The next state
1077 comes either from the stack (.endif) or from the table. */
1081 if (cstate_stack_ptr < 0)
1082 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1083 ".%s without matching .ifdef", c->name);
1084 cstate = (c->pushpop < 0)? cstate_stack[cstate_stack_ptr--] :
1085 next_cstate[cstate][macro_found? c->action1 : c->action2];
1088 /* Having dealt with a directive, break the loop */
1093 /* If we have handled a conditional directive, continue with the next
1094 physical line. Otherwise, fall through. */
1096 if (i < cond_list_size) continue;
1099 /* If the conditional state is not 0 (actively using these lines), ignore
1102 if (cstate != 0) continue; /* Conditional skip */
1104 /* Handle .include lines - these are also physical lines. */
1106 if (Ustrncmp(ss, ".include", 8) == 0 &&
1108 (Ustrncmp(ss+8, "_if_exists", 10) == 0 && isspace(ss[18]))))
1111 int include_if_exists = isspace(ss[8]) ? 0 : 10;
1112 config_file_item *save;
1113 struct stat statbuf;
1115 ss += 9 + include_if_exists;
1116 Uskip_whitespace(&ss);
1117 t = ss + Ustrlen(ss);
1118 while (t > ss && isspace(t[-1])) t--;
1119 if (*ss == '\"' && t[-1] == '\"')
1126 /* We allow relative file names. For security reasons currently
1127 relative names not allowed with .include_if_exists. For .include_if_exists
1128 we need to check the permissions/ownership of the containing folder */
1130 if (include_if_exists) log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, ".include specifies a non-"
1131 "absolute path \"%s\"", ss);
1134 gstring * g = string_append(NULL, 3, config_directory, "/", ss);
1135 ss = string_from_gstring(g);
1138 if (include_if_exists != 0 && (Ustat(ss, &statbuf) != 0)) continue;
1141 save_config_position(config_filename, config_lineno);
1142 save = store_get(sizeof(config_file_item), GET_UNTAINTED);
1143 save->next = config_file_stack;
1144 config_file_stack = save;
1145 save->file = config_file;
1146 save->filename = config_filename;
1147 save->directory = config_directory;
1148 save->lineno = config_lineno;
1150 if (!(config_file = Ufopen(ss, "rb")))
1151 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "failed to open included "
1152 "configuration file %s", ss);
1154 config_filename = string_copy(ss);
1155 config_directory = string_copyn(ss, CUstrrchr(ss, '/') - ss);
1160 /* If this is the start of the logical line, remember where the non-blank
1161 data starts. Otherwise shuffle down continuation lines to remove leading
1165 startoffset = ss - big_buffer;
1168 s = big_buffer + len;
1171 memmove(s, ss, (newlen - len) - (ss - s) + 1);
1176 /* Accept the new addition to the line. Remove trailing white space. */
1179 while (len > 0 && isspace(big_buffer[len-1])) len--;
1180 big_buffer[len] = 0;
1182 /* We are done if the line does not end in backslash and contains some data.
1183 Empty logical lines are ignored. For continuations, remove the backslash and
1184 go round the loop to read the continuation line. */
1188 if (big_buffer[len-1] != '\\') break; /* End of logical line */
1189 big_buffer[--len] = 0; /* Remove backslash */
1191 } /* Loop for reading multiple physical lines */
1193 /* We now have a logical line. Test for the end of a configuration section (or,
1194 more accurately, for the start of the next section). Place the name of the next
1195 section in next_section, and return NULL. If the name given is longer than
1196 next_section, truncate it. It will be unrecognized later, because all the known
1197 section names do fit. Leave space for pluralizing. */
1199 s = big_buffer + startoffset; /* First non-space character */
1202 save_config_line(s);
1204 if (strncmpic(s, US"begin ", 6) == 0)
1207 Uskip_whitespace(&s);
1208 if (big_buffer + len - s > sizeof(next_section) - 2)
1209 s[sizeof(next_section) - 2] = 0;
1210 Ustrcpy(next_section, s);
1214 /* Return the first non-blank character. */
1221 /*************************************************
1223 *************************************************/
1225 /* The yield is the pointer to the next uschar. Names longer than the
1226 output space are silently truncated. This function is also used from acl.c when
1230 name where to put the name
1234 Returns: new input pointer
1238 readconf_readname(uschar * name, int len, const uschar * s)
1241 BOOL broken = FALSE;
1243 if (isalpha(Uskip_whitespace(&s)))
1244 while (isalnum(*s) || *s == '_')
1246 if (p < len-1) name[p++] = *s;
1256 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1257 "exim item name too long (>%d), unable to use \"%s\" (truncated)",
1260 Uskip_whitespace(&s);
1267 /*************************************************
1268 * Read a time value *
1269 *************************************************/
1271 /* This function is also called from outside, to read argument
1272 time values. The format of a time value is:
1274 [<n>w][<n>d][<n>h][<n>m][<n>s]
1276 as long as at least one is present. If a format error is encountered,
1277 return a negative value. The value must be terminated by the given
1282 terminator required terminating character
1283 return_msec if TRUE, allow fractional seconds and return milliseconds
1285 Returns: the time value, or -1 on syntax error
1286 value is seconds if return_msec is FALSE
1287 value is milliseconds if return_msec is TRUE
1291 readconf_readtime(const uschar *s, int terminator, BOOL return_msec)
1299 if (!isdigit(*s)) return -1;
1300 (void)sscanf(CCS s, "%d%n", &value, &count);
1305 case 'w': value *= 7;
1306 case 'd': value *= 24;
1307 case 'h': value *= 60;
1308 case 'm': value *= 60;
1313 if (!return_msec) return -1;
1314 (void)sscanf(CCS s, "%lf%n", &fraction, &count);
1316 if (*s++ != 's') return -1;
1317 yield += (int)(fraction * 1000.0);
1323 if (return_msec) value *= 1000;
1325 if (*s == terminator) return yield;
1327 /* Control never reaches here. */
1332 /*************************************************
1333 * Read a fixed point value *
1334 *************************************************/
1336 /* The value is returned *1000
1340 terminator required terminator
1342 Returns: the value, or -1 on error
1346 readconf_readfixed(const uschar *s, int terminator)
1350 if (!isdigit(*s)) return -1;
1351 (void)sscanf(CS s, "%d%n", &value, &count);
1353 yield = value * 1000;
1357 while (isdigit((*(++s))))
1359 yield += (*s - '0') * m;
1364 return (*s == terminator)? yield : (-1);
1369 /*************************************************
1370 * Find option in list *
1371 *************************************************/
1373 /* The lists are always in order, so binary chop can be used.
1376 name the option name to search for
1377 ol the first entry in the option list
1378 last one more than the offset of the last entry in the option list
1380 Returns: pointer to an option entry, or NULL if not found
1384 find_option(const uschar *name, optionlist *ol, int last)
1387 while (last > first)
1389 int middle = (first + last)/2;
1390 int c = Ustrcmp(name, ol[middle].name);
1392 if (c == 0) return ol + middle;
1393 else if (c > 0) first = middle + 1;
1401 /*************************************************
1402 * Find a set flag in option list *
1403 *************************************************/
1405 /* Because some versions of Unix make no restrictions on the values of uids and
1406 gids (even negative ones), we cannot represent "unset" by a special value.
1407 There is therefore a separate boolean variable for each one indicating whether
1408 a value is set or not. This function returns a pointer to the boolean, given
1409 the original option name. It is a major disaster if the flag cannot be found.
1412 name the name of the uid or gid option
1413 oltop points to the start of the relevant option list
1414 last one more than the offset of the last item in the option list
1415 data_block NULL when reading main options => data values in the option
1416 list are absolute addresses; otherwise they are byte offsets
1417 in data_block (used for driver options)
1419 Returns: a pointer to the boolean flag.
1423 get_set_flag(const uschar *name, optionlist *oltop, int last, void *data_block)
1426 uschar name2[EXIM_DRIVERNAME_MAX];
1427 sprintf(CS name2, "*set_%.50s", name);
1428 if (!(ol = find_option(name2, oltop, last)))
1429 log_write(0, LOG_MAIN|LOG_PANIC_DIE,
1430 "Exim internal error: missing set flag for %s", name);
1432 ? (BOOL *)(US data_block + ol->v.offset) : (BOOL *)ol->v.value;
1438 /*************************************************
1439 * Output extra characters message and die *
1440 *************************************************/
1442 /* Called when an option line has junk on the end. Sometimes this is because
1443 the sysadmin thinks comments are permitted.
1446 s points to the extra characters
1447 t1..t3 strings to insert in the log message
1449 Returns: doesn't return; dies
1453 extra_chars_error(const uschar *s, const uschar *t1, const uschar *t2, const uschar *t3)
1455 uschar *comment = US"";
1456 if (*s == '#') comment = US" (# is comment only at line start)";
1457 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1458 "extra characters follow %s%s%s%s", t1, t2, t3, comment);
1463 /*************************************************
1464 * Read rewrite information *
1465 *************************************************/
1467 /* Each line of rewrite information contains:
1469 . A complete address in the form user@domain, possibly with
1470 leading * for each part; or alternatively, a regex.
1472 . A replacement string (which will be expanded).
1474 . An optional sequence of one-letter flags, indicating which
1475 headers etc. to apply this rule to.
1477 All this is decoded and placed into a control block. The OR of the flags is
1478 maintained in a common word.
1481 p points to the string that makes up the rule
1482 existflags points to the overall flag word
1483 isglobal TRUE if reading global rewrite rules
1485 Returns: the control block for the parsed rule.
1488 static rewrite_rule *
1489 readconf_one_rewrite(const uschar *p, int *existflags, BOOL isglobal)
1491 rewrite_rule * next = store_get(sizeof(rewrite_rule), GET_UNTAINTED);
1494 next->key = string_dequote(&p);
1496 Uskip_whitespace(&p);
1498 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1499 "missing rewrite replacement string");
1502 next->replacement = string_dequote(&p);
1504 while (*p) switch (*p++)
1506 case ' ': case '\t': break;
1508 case 'q': next->flags |= rewrite_quit; break;
1509 case 'w': next->flags |= rewrite_whole; break;
1511 case 'h': next->flags |= rewrite_all_headers; break;
1512 case 's': next->flags |= rewrite_sender; break;
1513 case 'f': next->flags |= rewrite_from; break;
1514 case 't': next->flags |= rewrite_to; break;
1515 case 'c': next->flags |= rewrite_cc; break;
1516 case 'b': next->flags |= rewrite_bcc; break;
1517 case 'r': next->flags |= rewrite_replyto; break;
1519 case 'E': next->flags |= rewrite_all_envelope; break;
1520 case 'F': next->flags |= rewrite_envfrom; break;
1521 case 'T': next->flags |= rewrite_envto; break;
1523 case 'Q': next->flags |= rewrite_qualify; break;
1524 case 'R': next->flags |= rewrite_repeat; break;
1527 next->flags |= rewrite_smtp;
1528 if (next->key[0] != '^' && Ustrncmp(next->key, "\\N^", 3) != 0)
1529 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1530 "rewrite rule has the S flag but is not a regular expression");
1534 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1535 "unknown rewrite flag character '%c' "
1536 "(could be missing quotes round replacement item)", p[-1]);
1540 /* If no action flags are set, set all the "normal" rewrites. */
1542 if ((next->flags & (rewrite_all | rewrite_smtp)) == 0)
1543 next->flags |= isglobal? rewrite_all : rewrite_all_headers;
1545 /* Remember which exist, for optimization, and return the rule */
1547 *existflags |= next->flags;
1554 /*************************************************
1555 * Read global rewrite information *
1556 *************************************************/
1558 /* Each line is a single rewrite rule; it is parsed into a control block
1559 by readconf_one_rewrite(), and its flags are ORed into the global flag
1560 word rewrite_existflags. */
1563 readconf_rewrites(void)
1565 rewrite_rule **chain = &global_rewrite_rules;
1568 while ((p = get_config_line()) != NULL)
1570 rewrite_rule *next = readconf_one_rewrite(p, &rewrite_existflags, TRUE);
1572 chain = &(next->next);
1578 /*************************************************
1580 *************************************************/
1582 /* Strings are read into the normal store pool. As long we aren't too
1583 near the end of the current block, the string will just use what is necessary
1584 on the top of the stacking pool, because string_cat() uses the extension
1588 s the rest of the input line
1589 name the option name (for errors)
1591 Returns: pointer to the string
1595 read_string(const uschar *s, const uschar *name)
1600 if (*s != '\"') return string_copy(s);
1603 yield = string_dequote(&s);
1605 if (s == ss+1 || s[-1] != '\"')
1606 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1607 "missing quote at end of string value for %s", name);
1609 if (*s != 0) extra_chars_error(s, US"string value for ", name, US"");
1615 /*************************************************
1616 * Custom-handler options *
1617 *************************************************/
1619 fn_smtp_receive_timeout(const uschar * name, const uschar * str, unsigned flags)
1621 if (flags & opt_fn_print)
1623 if (flags & opt_fn_print_label) printf("%s = ", name);
1624 printf("%s\n", smtp_receive_timeout_s
1625 ? string_printing2(smtp_receive_timeout_s, SP_TAB)
1626 : readconf_printtime(smtp_receive_timeout));
1628 else if (*str == '$')
1629 smtp_receive_timeout_s = string_copy(str);
1632 /* "smtp_receive_timeout", opt_time, &smtp_receive_timeout */
1633 smtp_receive_timeout = readconf_readtime(str, 0, FALSE);
1634 if (smtp_receive_timeout < 0)
1635 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "invalid time value for %s",
1640 /*************************************************
1641 * Handle option line *
1642 *************************************************/
1644 /* This function is called from several places to process a line containing the
1645 setting of an option. The first argument is the line to be decoded; it has been
1646 checked not to be empty and not to start with '#'. Trailing newlines and white
1647 space have been removed. The second argument is a pointer to the list of
1648 variable names that are to be recognized, together with their types and
1649 locations, and the third argument gives the number of entries in the list.
1651 The fourth argument is a pointer to a data block. If it is NULL, then the data
1652 values in the options list are absolute addresses. Otherwise, they are byte
1653 offsets in the data block.
1655 String option data may continue onto several lines; this function reads further
1656 data from config_file if necessary.
1658 The yield of this function is normally zero. If a string continues onto
1659 multiple lines, then the data value is permitted to be followed by a comma
1660 or a semicolon (for use in drivers) and the yield is that character.
1663 buffer contains the configuration line to be handled
1664 oltop points to the start of the relevant option list
1665 last one more than the offset of the last item in the option list
1666 data_block NULL when reading main options => data values in the option
1667 list are absolute addresses; otherwise they are byte offsets
1668 in data_block when they have opt_public set; otherwise
1669 they are byte offsets in data_block->options_block.
1670 unknown_txt format string to use in panic message for unknown option;
1671 must contain %s for option name
1672 if given as NULL, don't panic on unknown option
1674 Returns: TRUE if an option was read successfully,
1675 FALSE false for an unknown option if unknown_txt == NULL,
1676 otherwise panic and die on an unknown option
1680 readconf_handle_option(uschar *buffer, optionlist *oltop, int last,
1681 void *data_block, uschar *unknown_txt)
1685 int count, type, value;
1689 BOOL boolvalue = TRUE;
1690 BOOL freesptr = TRUE;
1691 optionlist *ol, *ol2;
1695 uschar *inttype = US"";
1697 const uschar * s = buffer;
1698 uschar **str_target;
1699 uschar name[EXIM_DRIVERNAME_MAX];
1700 uschar name2[EXIM_DRIVERNAME_MAX];
1702 /* There may be leading spaces; thereafter, we expect an option name starting
1705 if (!isalpha( Uskip_whitespace(&s) ))
1706 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "option setting expected: %s", s);
1708 /* Read the name of the option, and skip any subsequent white space. If
1709 it turns out that what we read was "hide", set the flag indicating that
1710 this is a secure option, and loop to read the next word. */
1712 for (int n = 0; n < 2; n++)
1714 while (isalnum(*s) || *s == '_')
1716 if (ptr < sizeof(name)-1) name[ptr++] = *s;
1720 Uskip_whitespace(&s);
1721 if (Ustrcmp(name, "hide") != 0) break;
1722 issecure = opt_secure;
1726 /* Deal with "no_" or "not_" here for booleans */
1728 if (Ustrncmp(name, "no_", 3) == 0)
1734 if (Ustrncmp(name, "not_", 4) == 0)
1740 /* Search the list for the given name. A non-existent name, or an option that
1741 is set twice, is a disaster. */
1743 if (!(ol = find_option(name + offset, oltop, last)))
1745 if (!unknown_txt) return FALSE;
1746 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, CS unknown_txt, name);
1749 if ((ol->type & opt_set) && !(ol->type & (opt_rep_con | opt_rep_str)))
1750 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1751 "\"%s\" option set for the second time", name);
1753 ol->type |= opt_set | issecure;
1754 type = ol->type & opt_mask;
1756 /* Types with data values must be followed by '='; the "no[t]_" prefix
1757 applies only to boolean values. */
1759 if (type < opt_bool || type > opt_bool_last)
1762 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1763 "negation prefix applied to a non-boolean option");
1765 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1766 "unexpected end of line (data missing) after %s", name);
1768 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "missing \"=\" after %s", name);
1771 /* If a boolean wasn't preceded by "no[t]_" it can be followed by = and
1772 true/false/yes/no, or, in the case of opt_expand_bool, a general string that
1773 ultimately expands to one of those values. */
1775 else if (*s && (offset != 0 || *s != '='))
1776 extra_chars_error(s, US"boolean option ", name, US"");
1778 /* Skip white space after = */
1780 if (*s == '=') while (isspace(*++s));
1782 /* If there is a data block and the opt_public flag is not set, change
1783 the data block pointer to the private options block. */
1785 if (data_block && !(ol->type & opt_public))
1786 data_block = (void *)(((driver_instance *)data_block)->options_block);
1788 /* Now get the data according to the type. */
1792 /* If a string value is not enclosed in quotes, it consists of
1793 the rest of the current line, verbatim. Otherwise, string escapes
1796 A transport is specified as a string, which is then looked up in the
1797 list of transports. A search type is specified as one of a number of
1800 A set or rewrite rules for a driver is specified as a string, which is
1801 then parsed into a suitable chain of control blocks.
1803 Uids and gids are specified as strings which are then looked up in the
1804 passwd file. Lists of uids and gids are similarly specified as colon-
1805 separated strings. */
1810 case opt_expand_uid:
1811 case opt_expand_gid:
1816 reset_point = store_mark();
1817 sptr = read_string(s, name);
1819 /* Having read a string, we now have several different ways of using it,
1820 depending on the data type, so do another switch. If keeping the actual
1821 string is not required (because it is interpreted), freesptr is set TRUE,
1822 and at the end we reset the pool. */
1826 /* If this was a string, set the variable to point to the new string,
1827 and set the flag so its store isn't reclaimed. If it was a list of rewrite
1828 rules, we still keep the string (for printing), and parse the rules into a
1829 control block and flags word. */
1832 str_target = data_block ? USS (US data_block + ol->v.offset)
1834 if (ol->type & opt_rep_con)
1836 uschar * saved_condition;
1837 /* We already have a condition, we're conducting a crude hack to let
1838 multiple condition rules be chained together, despite storing them in
1840 *str_target = string_copy_perm( (saved_condition = *str_target)
1841 ? string_sprintf("${if and{{bool_lax{%s}}{bool_lax{%s}}}}",
1842 saved_condition, sptr)
1845 /* TODO(pdp): there is a memory leak here and just below
1846 when we set 3 or more conditions; I still don't
1847 understand the store mechanism enough to know
1848 what's the safe way to free content from an earlier store.
1849 AFAICT, stores stack, so freeing an early stored item also stores
1850 all data alloc'd after it. If we knew conditions were adjacent,
1851 we could survive that, but we don't. So I *think* we need to take
1852 another bit from opt_type to indicate "malloced"; this seems like
1853 quite a hack, especially for this one case. It also means that
1854 we can't ever reclaim the store from the *first* condition.
1856 Because we only do this once, near process start-up, I'm prepared to
1857 let this slide for the time being, even though it rankles. */
1859 else if (ol->type & opt_rep_str)
1862 Ustrncmp(name, "headers_add", 11) == 0 ? '\n'
1863 : Ustrncmp(name, "set", 3) == 0 ? ';'
1865 int sep_i = -(int)sep_o;
1866 const uschar * list = sptr;
1868 gstring * list_o = NULL;
1872 list_o = string_get(Ustrlen(*str_target) + Ustrlen(sptr));
1873 list_o = string_cat(list_o, *str_target);
1876 while ((s = string_nextinlist(&list, &sep_i, NULL, 0)))
1877 list_o = string_append_listele(list_o, sep_o, s);
1880 *str_target = string_copy_perm(string_from_gstring(list_o), FALSE);
1891 *USS (US data_block + ol->v.offset) = sptr;
1893 *USS ol->v.value = sptr;
1895 if (type == opt_rewrite)
1900 rewrite_rule **chain;
1903 sprintf(CS name2, "*%.50s_rules", name);
1904 ol2 = find_option(name2, oltop, last);
1905 sprintf(CS name2, "*%.50s_flags", name);
1906 ol3 = find_option(name2, oltop, last);
1909 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1910 "rewrite rules not available for driver");
1914 chain = (rewrite_rule **)(US data_block + ol2->v.offset);
1915 flagptr = (int *)(US data_block + ol3->v.offset);
1919 chain = (rewrite_rule **)ol2->v.value;
1920 flagptr = (int *)ol3->v.value;
1923 /* This will trap if sptr is tainted. Not sure if that can happen */
1924 while ((p = string_nextinlist(CUSS &sptr, &sep, big_buffer, BIG_BUFFER_SIZE)))
1926 rewrite_rule *next = readconf_one_rewrite(p, flagptr, FALSE);
1928 chain = &(next->next);
1931 if ((*flagptr & (rewrite_all_envelope | rewrite_smtp)) != 0)
1932 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "rewrite rule specifies a "
1933 "non-header rewrite - not allowed at transport time -");
1937 /* If it was an expanded uid, see if there is any expansion to be
1938 done by checking for the presence of a $ character. If there is, save it
1939 in the corresponding *expand_user option field. Otherwise, fall through
1940 to treat it as a fixed uid. Ensure mutual exclusivity of the two kinds
1943 case opt_expand_uid:
1944 sprintf(CS name2, "*expand_%.50s", name);
1945 if ((ol2 = find_option(name2, oltop, last)))
1947 uschar *ss = (Ustrchr(sptr, '$') != NULL) ? sptr : NULL;
1950 *(USS(US data_block + ol2->v.offset)) = ss;
1952 *(USS ol2->v.value) = ss;
1956 *(get_set_flag(name, oltop, last, data_block)) = FALSE;
1962 /* Look up a fixed uid, and also make use of the corresponding gid
1963 if a passwd entry is returned and the gid has not been set. */
1966 if (!route_finduser(sptr, &pw, &uid))
1967 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "user %s was not found", sptr);
1969 *(uid_t *)(US data_block + ol->v.offset) = uid;
1971 *(uid_t *)ol->v.value = uid;
1973 /* Set the flag indicating a fixed value is set */
1975 *(get_set_flag(name, oltop, last, data_block)) = TRUE;
1977 /* Handle matching gid if we have a passwd entry: done by finding the
1978 same name with terminating "user" changed to "group"; if not found,
1979 ignore. Also ignore if the value is already set. */
1981 if (pw == NULL) break;
1982 Ustrcpy(name+Ustrlen(name)-4, US"group");
1983 ol2 = find_option(name, oltop, last);
1984 if (ol2 && ((ol2->type & opt_mask) == opt_gid ||
1985 (ol2->type & opt_mask) == opt_expand_gid))
1987 BOOL *set_flag = get_set_flag(name, oltop, last, data_block);
1991 *((gid_t *)(US data_block + ol2->v.offset)) = pw->pw_gid;
1993 *((gid_t *)ol2->v.value) = pw->pw_gid;
1999 /* If it was an expanded gid, see if there is any expansion to be
2000 done by checking for the presence of a $ character. If there is, save it
2001 in the corresponding *expand_user option field. Otherwise, fall through
2002 to treat it as a fixed gid. Ensure mutual exclusivity of the two kinds
2005 case opt_expand_gid:
2006 sprintf(CS name2, "*expand_%.50s", name);
2007 if ((ol2 = find_option(name2, oltop, last)))
2009 uschar *ss = (Ustrchr(sptr, '$') != NULL) ? sptr : NULL;
2012 *(USS(US data_block + ol2->v.offset)) = ss;
2014 *(USS ol2->v.value) = ss;
2018 *(get_set_flag(name, oltop, last, data_block)) = FALSE;
2024 /* Handle freestanding gid */
2027 if (!route_findgroup(sptr, &gid))
2028 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "group %s was not found", sptr);
2030 *((gid_t *)(US data_block + ol->v.offset)) = gid;
2032 *((gid_t *)ol->v.value) = gid;
2033 *(get_set_flag(name, oltop, last, data_block)) = TRUE;
2036 /* If it was a uid list, look up each individual entry, and build
2037 a vector of uids, with a count in the first element. Put the vector
2038 in malloc store so we can free the string. (We are reading into
2039 permanent store already.) */
2047 const uschar *op = expand_string (sptr);
2050 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "failed to expand %s: %s",
2051 name, expand_string_message);
2054 if (*p != 0) count++;
2055 while (*p != 0) if (*p++ == ':' && *p != 0) count++;
2056 list = store_malloc(count*sizeof(uid_t));
2057 list[ptr++] = (uid_t)(count - 1);
2060 *((uid_t **)(US data_block + ol->v.offset)) = list;
2062 *((uid_t **)ol->v.value) = list;
2068 /* If p is tainted we trap. Not sure that can happen */
2069 (void)string_nextinlist(&p, &sep, big_buffer, BIG_BUFFER_SIZE);
2070 if (!route_finduser(big_buffer, NULL, &uid))
2071 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "user %s was not found",
2078 /* If it was a gid list, look up each individual entry, and build
2079 a vector of gids, with a count in the first element. Put the vector
2080 in malloc store so we can free the string. (We are reading into permanent
2089 const uschar *op = expand_string (sptr);
2092 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "failed to expand %s: %s",
2093 name, expand_string_message);
2096 if (*p != 0) count++;
2097 while (*p != 0) if (*p++ == ':' && *p != 0) count++;
2098 list = store_malloc(count*sizeof(gid_t));
2099 list[ptr++] = (gid_t)(count - 1);
2102 *((gid_t **)(US data_block + ol->v.offset)) = list;
2104 *((gid_t **)ol->v.value) = list;
2110 /* If p is tainted we trap. Not sure that can happen */
2111 (void)string_nextinlist(&p, &sep, big_buffer, BIG_BUFFER_SIZE);
2112 if (!route_findgroup(big_buffer, &gid))
2113 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "group %s was not found",
2121 /* Release store if the value of the string doesn't need to be kept. */
2123 if (freesptr) reset_point = store_reset(reset_point);
2126 /* Expanded boolean: if no characters follow, or if there are no dollar
2127 characters, this is a fixed-valued boolean, and we fall through. Otherwise,
2128 save the string for later expansion in the alternate place. */
2130 case opt_expand_bool:
2131 if (*s && Ustrchr(s, '$') != 0)
2133 sprintf(CS name2, "*expand_%.50s", name);
2134 if ((ol2 = find_option(name2, oltop, last)))
2136 reset_point = store_mark();
2137 sptr = read_string(s, name);
2139 *(USS(US data_block + ol2->v.offset)) = sptr;
2141 *(USS ol2->v.value) = sptr;
2148 /* Boolean: if no characters follow, the value is boolvalue. Otherwise
2149 look for yes/not/true/false. Some booleans are stored in a single bit in
2150 a single int. There's a special fudge for verify settings; without a suffix
2151 they set both xx_sender and xx_recipient. The table points to the sender
2152 value; search subsequently for the recipient. There's another special case:
2153 opt_bool_set also notes when a boolean has been set. */
2157 case opt_bool_verify:
2161 s = readconf_readname(name2, EXIM_DRIVERNAME_MAX, s);
2162 if (strcmpic(name2, US"true") == 0 || strcmpic(name2, US"yes") == 0)
2164 else if (strcmpic(name2, US"false") == 0 || strcmpic(name2, US"no") == 0)
2166 else log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
2167 "\"%s\" is not a valid value for the \"%s\" option", name2, name);
2168 if (*s != 0) extra_chars_error(s, string_sprintf("\"%s\" ", name2),
2169 US"for boolean option ", name);
2172 /* Handle single-bit type. */
2174 if (type == opt_bit)
2176 int bit = 1 << ((ol->type >> 16) & 31);
2177 int * ptr = data_block
2178 ? (int *)(US data_block + ol->v.offset)
2179 : (int *)ol->v.value;
2180 if (boolvalue) *ptr |= bit; else *ptr &= ~bit;
2184 /* Handle full BOOL types */
2187 *((BOOL *)(US data_block + ol->v.offset)) = boolvalue;
2189 *((BOOL *)ol->v.value) = boolvalue;
2193 if (type == opt_bool_verify)
2195 sprintf(CS name2, "%.50s_recipient", name + offset);
2196 if ((ol2 = find_option(name2, oltop, last)))
2198 *((BOOL *)(US data_block + ol2->v.offset)) = boolvalue;
2200 *((BOOL *)ol2->v.value) = boolvalue;
2203 /* Note that opt_bool_set type is set, if there is somewhere to do so */
2205 else if (type == opt_bool_set)
2207 sprintf(CS name2, "*set_%.50s", name + offset);
2208 if ((ol2 = find_option(name2, oltop, last)))
2210 *((BOOL *)(US data_block + ol2->v.offset)) = TRUE;
2212 *((BOOL *)ol2->v.value) = TRUE;
2220 inttype = US"octal ";
2222 /* Integer: a simple(ish) case; allow octal and hex formats, and
2223 suffixes K, M, G, and T. The different types affect output, not input. */
2232 lvalue = strtol(CS s, CSS &endptr, intbase);
2235 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "%sinteger expected for %s",
2238 if (errno != ERANGE && *endptr)
2240 uschar * mp = US"TtGgMmKk\0"; /* YyZzEePpTtGgMmKk */
2242 if ((mp = Ustrchr(mp, *endptr)))
2247 if (lvalue > INT_MAX/1024 || lvalue < INT_MIN/1024)
2258 if (errno == ERANGE || lvalue > INT_MAX || lvalue < INT_MIN)
2259 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
2260 "absolute value of integer \"%s\" is too large (overflow)", s);
2262 if (Uskip_whitespace(&endptr))
2263 extra_chars_error(endptr, inttype, US"integer value for ", name);
2265 value = (int)lvalue;
2269 *(int *)(US data_block + ol->v.offset) = value;
2271 *(int *)ol->v.value = value;
2274 /* Integer held in K: again, allow formats and suffixes as above. */
2280 int_eximarith_t lvalue = strtol(CS s, CSS &endptr, intbase);
2283 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "%sinteger expected for %s",
2286 if (errno != ERANGE && *endptr)
2288 uschar * mp = US"ZzEePpTtGgMmKk\0"; /* YyZzEePpTtGgMmKk */
2290 if ((mp = Ustrchr(mp, *endptr)))
2295 if (lvalue > EXIM_ARITH_MAX/1024 || lvalue < EXIM_ARITH_MIN/1024)
2304 lvalue = (lvalue + 512)/1024;
2307 if (errno == ERANGE) log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
2308 "absolute value of integer \"%s\" is too large (overflow)", s);
2310 if (Uskip_whitespace(&endptr))
2311 extra_chars_error(endptr, inttype, US"integer value for ", name);
2314 *(int_eximarith_t *)(US data_block + ol->v.offset) = lvalue;
2316 *(int_eximarith_t *)ol->v.value = lvalue;
2320 /* Fixed-point number: held to 3 decimal places. */
2323 if (sscanf(CS s, "%d%n", &value, &count) != 1)
2324 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
2325 "fixed-point number expected for %s", name);
2327 if (value < 0) log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
2328 "integer \"%s\" is too large (overflow)", s);
2332 if (value < 0) log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
2333 "integer \"%s\" is too large (overflow)", s);
2335 /* We get a coverity error here for using count, as it derived
2336 from the tainted buffer pointed to by s, as parsed by sscanf().
2337 By the definition of sscanf we must be accessing between start
2338 and end of s (assuming it is nul-terminated...) so ignore the error. */
2339 /* coverity[tainted_data] */
2340 if (s[count] == '.')
2343 while (isdigit(s[++count]))
2345 value += (s[count] - '0') * d;
2350 while (isspace(s[count])) count++;
2353 extra_chars_error(s+count, US"fixed-point value for ", name, US"");
2356 *((int *)(US data_block + ol->v.offset)) = value;
2358 *((int *)ol->v.value) = value;
2361 /* There's a special routine to read time values. */
2364 value = readconf_readtime(s, 0, FALSE);
2366 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "invalid time value for %s",
2369 *((int *)(US data_block + ol->v.offset)) = value;
2371 *((int *)ol->v.value) = value;
2374 /* A time list is a list of colon-separated times, with the first
2375 element holding the size of the list and the second the number of
2381 int * list = data_block
2382 ? (int *)(US data_block + ol->v.offset)
2383 : (int *)ol->v.value;
2385 if (*s != 0) for (count = 1; count <= list[0] - 2; count++)
2388 uschar *snext = Ustrchr(s, ':');
2392 while (ss > s && isspace(ss[-1])) ss--;
2395 value = readconf_readtime(s, terminator, FALSE);
2397 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "invalid time value for %s",
2399 if (count > 1 && value <= list[count])
2400 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
2401 "time value out of order for %s", name);
2402 list[count+1] = value;
2403 if (snext == NULL) break;
2405 Uskip_whitespace(&s);
2408 if (count > list[0] - 2)
2409 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "too many time values for %s",
2411 if (count > 0 && list[2] == 0) count = 0;
2417 ol->v.fn(name, s, 0);
2426 /*************************************************
2427 * Print a time value *
2428 *************************************************/
2431 Argument: a time value in seconds
2432 Returns: pointer to a fixed buffer containing the time as a string,
2433 in readconf_readtime() format
2437 readconf_printtime(int t)
2440 uschar *p = time_buffer;
2442 if (t < 0) *p++ = '-', t = -t;
2453 if (w > 0) p += sprintf(CS p, "%dw", w);
2454 if (d > 0) p += sprintf(CS p, "%dd", d);
2455 if (h > 0) p += sprintf(CS p, "%dh", h);
2456 if (m > 0) p += sprintf(CS p, "%dm", m);
2457 if (s > 0 || p == time_buffer) sprintf(CS p, "%ds", s);
2464 /*************************************************
2465 * Print an individual option value *
2466 *************************************************/
2468 /* This is used by the -bP option, so prints to the standard output.
2469 The entire options list is passed in as an argument, because some options come
2470 in pairs - typically uid/gid settings, which can either be explicit numerical
2471 values, or strings to be expanded later. If the numerical value is unset,
2472 search for "*expand_<name>" to see if there is a string equivalent.
2475 ol option entry, or NULL for an unknown option
2477 options_block NULL for main configuration options; otherwise points to
2478 a driver block; if the option doesn't have opt_public
2479 set, then options_block->options_block is where the item
2481 oltop points to the option list in which ol exists
2482 last one more than the offset of the last entry in optop
2483 no_labels do not show "foo = " at the start.
2485 Returns: boolean success
2489 print_ol(optionlist *ol, const uschar *name, void *options_block,
2490 optionlist *oltop, int last, BOOL no_labels)
2499 uschar name2[EXIM_DRIVERNAME_MAX];
2503 printf("%s is not a known option\n", name);
2507 /* Non-admin callers cannot see options that have been flagged secure by the
2510 if (!f.admin_user && ol->type & opt_secure)
2513 printf("%s\n", CCS hidden);
2515 printf("%s = %s\n", name, CCS hidden);
2519 /* Else show the value of the option */
2521 value = ol->v.value;
2524 if (!(ol->type & opt_public))
2525 options_block = (void *)(((driver_instance *)options_block)->options_block);
2526 value = (void *)(US options_block + (long int)value);
2529 switch(ol->type & opt_mask)
2532 case opt_rewrite: /* Show the text value */
2534 if (!no_labels) printf("%s = ", name);
2535 printf("%s\n", s ? string_printing2(s, SP_TAB) : US"");
2539 if (!no_labels) printf("%s = ", name);
2540 printf("%d\n", *((int *)value));
2545 int x = *((int *)value);
2546 if (x != 0 && (x & 1023) == 0)
2550 if ((x & 1023) == 0)
2555 if (!no_labels) printf("%s = ", name);
2556 printf("%d%c\n", x, c);
2560 if (!no_labels) printf("%s = ", name);
2568 int_eximarith_t x = *((int_eximarith_t *)value);
2569 if (!no_labels) printf("%s = ", name);
2570 if (x == 0) printf("0\n");
2571 else if ((x & ((1<<30)-1)) == 0) printf(PR_EXIM_ARITH "T\n", x >> 30);
2572 else if ((x & ((1<<20)-1)) == 0) printf(PR_EXIM_ARITH "G\n", x >> 20);
2573 else if ((x & ((1<<10)-1)) == 0) printf(PR_EXIM_ARITH "M\n", x >> 10);
2574 else printf(PR_EXIM_ARITH "K\n", x);
2579 if (!no_labels) printf("%s = ", name);
2580 printf("%#o\n", *((int *)value));
2583 /* Can be negative only when "unset", in which case integer */
2587 int x = *((int *)value);
2590 if (x < 0) printf("%s =\n", name); else
2592 if (!no_labels) printf("%s = ", name);
2593 printf("%d.", x/1000);
2606 /* If the numerical value is unset, try for the string value */
2608 case opt_expand_uid:
2609 if (! *get_set_flag(name, oltop, last, options_block))
2611 sprintf(CS name2, "*expand_%.50s", name);
2612 if ((ol2 = find_option(name2, oltop, last)))
2615 s = *USS (US options_block + ol2->v.offset);
2617 s = *USS ol2->v.value;
2618 if (!no_labels) printf("%s = ", name);
2619 printf("%s\n", s ? string_printing(s) : US"");
2624 /* Else fall through */
2627 if (!no_labels) printf("%s = ", name);
2628 if (! *get_set_flag(name, oltop, last, options_block))
2631 if ((pw = getpwuid(*((uid_t *)value))))
2632 printf("%s\n", pw->pw_name);
2634 printf("%ld\n", (long int)(*((uid_t *)value)));
2637 /* If the numerical value is unset, try for the string value */
2639 case opt_expand_gid:
2640 if (! *get_set_flag(name, oltop, last, options_block))
2642 sprintf(CS name2, "*expand_%.50s", name);
2643 if ( (ol2 = find_option(name2, oltop, last))
2644 && (ol2->type & opt_mask) == opt_stringptr)
2647 s = *USS (US options_block + ol2->v.offset);
2649 s = *USS ol2->v.value;
2650 if (!no_labels) printf("%s = ", name);
2651 printf("%s\n", s ? string_printing(s) : US"");
2656 /* Else fall through */
2659 if (!no_labels) printf("%s = ", name);
2660 if (! *get_set_flag(name, oltop, last, options_block))
2663 if ((gr = getgrgid(*((int *)value))))
2664 printf("%s\n", gr->gr_name);
2666 printf("%ld\n", (long int)(*((int *)value)));
2670 uidlist = *((uid_t **)value);
2671 if (!no_labels) printf("%s =", name);
2674 uschar sep = no_labels ? '\0' : ' ';
2675 for (int i = 1; i <= (int)(uidlist[0]); i++)
2677 uschar *name = NULL;
2678 if ((pw = getpwuid(uidlist[i]))) name = US pw->pw_name;
2679 if (sep != '\0') printf("%c", sep);
2680 if (name) printf("%s", name);
2681 else printf("%ld", (long int)(uidlist[i]));
2689 gidlist = *((gid_t **)value);
2690 if (!no_labels) printf("%s =", name);
2693 uschar sep = no_labels ? '\0' : ' ';
2694 for (int i = 1; i <= (int)(gidlist[0]); i++)
2696 uschar *name = NULL;
2697 if ((gr = getgrgid(gidlist[i]))) name = US gr->gr_name;
2698 if (sep != '\0') printf("%c", sep);
2699 if (name) printf("%s", name);
2700 else printf("%ld", (long int)(gidlist[i]));
2708 if (!no_labels) printf("%s = ", name);
2709 printf("%s\n", readconf_printtime(*((int *)value)));
2714 int *list = (int *)value;
2715 if (!no_labels) printf("%s = ", name);
2716 for (int i = 0; i < list[1]; i++)
2717 printf("%s%s", i == 0 ? "" : ":", readconf_printtime(list[i+2]));
2723 printf("%s%s\n", (*((int *)value)) & (1 << ((ol->type >> 16) & 31))
2724 ? "" : "no_", name);
2727 case opt_expand_bool:
2728 sprintf(CS name2, "*expand_%.50s", name);
2729 if ((ol2 = find_option(name2, oltop, last)) && ol2->v.value)
2732 s = *USS (US options_block + ol2->v.offset);
2734 s = *USS ol2->v.value;
2737 if (!no_labels) printf("%s = ", name);
2738 printf("%s\n", string_printing(s));
2741 /* s == NULL => string not set; fall through */
2747 case opt_bool_verify:
2749 printf("%s%s\n", *((BOOL *)value) ? "" : "no_", name);
2753 ol->v.fn(name, NULL, no_labels ? opt_fn_print : opt_fn_print|opt_fn_print_label);
2761 /*************************************************
2762 * Print value from main configuration *
2763 *************************************************/
2765 /* This function, called as a result of encountering the -bP option,
2766 causes the value of any main configuration variable to be output if the
2767 second argument is NULL. There are some special values:
2769 all print all main configuration options
2770 config_file print the name of the configuration file
2771 (configure_file will still work, for backward
2773 routers print the routers' configurations
2774 transports print the transports' configuration
2775 authenticators print the authenticators' configuration
2776 macros print the macros' configuration
2777 router_list print a list of router names
2778 transport_list print a list of transport names
2779 authenticator_list print a list of authentication mechanism names
2780 macro_list print a list of macro names
2781 +name print a named list item
2782 local_scan print the local_scan options
2783 config print the configuration as it is parsed
2784 environment print the used execution environment
2786 If the second argument is not NULL, it must be one of "router", "transport",
2787 "authenticator" or "macro" in which case the first argument identifies the
2788 driver whose options are to be printed.
2791 name option name if type == NULL; else driver name
2792 type NULL or driver type name, as described above
2793 no_labels avoid the "foo = " at the start of an item
2795 Returns: Boolean success
2799 readconf_print(const uschar * name, const uschar * type, BOOL no_labels)
2801 BOOL names_only = FALSE;
2802 optionlist *ol2 = NULL;
2803 driver_instance *d = NULL;
2812 static uschar *types[] = { US"address", US"domain", US"host",
2814 static tree_node **anchors[] = { &addresslist_anchor, &domainlist_anchor,
2815 &hostlist_anchor, &localpartlist_anchor };
2817 for (int i = 0; i < 4; i++)
2818 if ((t = tree_search(*(anchors[i]), name+1)))
2820 namedlist_block * nb = t->data.ptr;
2821 const uschar * s = nb->hide ? hidden : nb->string;
2824 printf("%s\n", CCS s);
2826 printf("%slist %s = %s\n", types[i], name+1, CCS s);
2830 printf("no address, domain, host, or local part list called \"%s\" "
2831 "exists\n", name+1);
2836 if ( Ustrcmp(name, "configure_file") == 0
2837 || Ustrcmp(name, "config_file") == 0)
2839 printf("%s\n", CS config_main_filename);
2843 if (Ustrcmp(name, "all") == 0)
2845 for (optionlist * ol = optionlist_config;
2846 ol < optionlist_config + nelem(optionlist_config); ol++)
2847 if (!(ol->type & opt_hidden))
2848 (void) print_ol(ol, US ol->name, NULL,
2849 optionlist_config, nelem(optionlist_config),
2854 if (Ustrcmp(name, "local_scan") == 0)
2856 #ifndef LOCAL_SCAN_HAS_OPTIONS
2857 printf("local_scan() options are not supported\n");
2860 for (optionlist * ol = local_scan_options;
2861 ol < local_scan_options + local_scan_options_count; ol++)
2862 (void) print_ol(ol, US ol->name, NULL, local_scan_options,
2863 local_scan_options_count, no_labels);
2868 if (Ustrcmp(name, "config") == 0)
2870 print_config(f.admin_user, no_labels);
2874 if (Ustrcmp(name, "routers") == 0)
2879 else if (Ustrcmp(name, "transports") == 0)
2881 type = US"transport";
2884 else if (Ustrcmp(name, "authenticators") == 0)
2886 type = US"authenticator";
2889 else if (Ustrcmp(name, "macros") == 0)
2894 else if (Ustrcmp(name, "router_list") == 0)
2900 else if (Ustrcmp(name, "transport_list") == 0)
2902 type = US"transport";
2906 else if (Ustrcmp(name, "authenticator_list") == 0)
2908 type = US"authenticator";
2912 else if (Ustrcmp(name, "macro_list") == 0)
2918 else if (Ustrcmp(name, "environment") == 0)
2923 for (p = USS environ; *p; p++) ;
2924 qsort(environ, p - USS environ, sizeof(*p), string_compare_by_pointer);
2926 for (p = USS environ; *p; p++)
2929 if (no_labels && (q = Ustrchr(*p, '='))) *q = '\0';
2937 return print_ol(find_option(name,
2938 optionlist_config, nelem(optionlist_config)),
2939 name, NULL, optionlist_config, nelem(optionlist_config), no_labels);
2942 /* Handle the options for a router or transport. Skip options that are flagged
2943 as hidden. Some of these are options with names starting with '*', used for
2944 internal alternative representations of other options (which the printing
2945 function will sort out). Others are synonyms kept for backward compatibility.
2948 if (Ustrcmp(type, "router") == 0)
2950 d = (driver_instance *)routers;
2951 ol2 = optionlist_routers;
2952 size = optionlist_routers_size;
2954 else if (Ustrcmp(type, "transport") == 0)
2956 d = (driver_instance *)transports;
2957 ol2 = optionlist_transports;
2958 size = optionlist_transports_size;
2960 else if (Ustrcmp(type, "authenticator") == 0)
2962 d = (driver_instance *)auths;
2963 ol2 = optionlist_auths;
2964 size = optionlist_auths_size;
2967 else if (Ustrcmp(type, "macro") == 0)
2969 /* People store passwords in macros and they were previously not available
2970 for printing. So we have an admin_users restriction. */
2973 fprintf(stderr, "exim: permission denied; not admin\n");
2976 for (macro_item * m = macros; m; m = m->next)
2977 if (!name || Ustrcmp(name, m->name) == 0)
2980 printf("%s\n", CS m->name);
2982 printf("%s\n", CS m->replacement);
2984 printf("%s=%s\n", CS m->name, CS m->replacement);
2988 if (!name) return TRUE;
2990 printf("%s %s not found\n", type, name);
2996 for (; d; d = d->next) printf("%s\n", CS d->name);
3000 /* Either search for a given driver, or print all of them */
3002 for (; d; d = d->next)
3006 printf("\n%s %s:\n", d->name, type);
3007 else if (Ustrcmp(d->name, name) != 0) continue;
3009 for (optionlist * ol = ol2; ol < ol2 + size; ol++)
3010 if (!(ol->type & opt_hidden))
3011 rc |= print_ol(ol, US ol->name, d, ol2, size, no_labels);
3013 for (optionlist * ol = d->info->options;
3014 ol < d->info->options + *(d->info->options_count); ol++)
3015 if (!(ol->type & opt_hidden))
3016 rc |= print_ol(ol, US ol->name, d, d->info->options,
3017 *d->info->options_count, no_labels);
3019 if (name) return rc;
3021 if (!name) return TRUE;
3023 printf("%s %s not found\n", type, name);
3029 /*************************************************
3030 * Read a named list item *
3031 *************************************************/
3033 /* This function reads a name and a list (i.e. string). The name is used to
3034 save the list in a tree, sorted by its name. Each entry also has a number,
3035 which can be used for caching tests, but if the string contains any expansion
3036 items other than $key, the number is set negative to inhibit caching. This
3037 mechanism is used for domain, host, and address lists that are referenced by
3041 anchorp points to the tree anchor
3042 numberp points to the current number for this tree
3043 max the maximum number permitted
3044 s the text of the option line, starting immediately after the name
3046 tname the name of the list type, for messages
3047 hide do not output value on "-bP"
3053 read_named_list(tree_node **anchorp, int *numberp, int max, uschar *s,
3054 uschar *tname, BOOL hide)
3056 BOOL forcecache = FALSE;
3059 namedlist_block * nb = store_get_perm(sizeof(namedlist_block), FALSE);
3061 if (Ustrncmp(s, "_cache", 6) == 0)
3068 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "unrecognized configuration line");
3070 if (*numberp >= max)
3071 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "too many named %ss (max is %d)\n",
3074 Uskip_whitespace(&s);
3076 while (isalnum(*s) || *s == '_') s++;
3077 t = store_get(sizeof(tree_node) + s-ss, ss);
3078 Ustrncpy(t->name, ss, s-ss);
3080 Uskip_whitespace(&s);
3082 if (!tree_insertnode(anchorp, t))
3083 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
3084 "duplicate name \"%s\" for a named %s", t->name, tname);
3087 nb->number = *numberp;
3091 if (*s++ != '=') log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
3092 "missing '=' after \"%s\"", t->name);
3093 Uskip_whitespace(&s);
3094 nb->string = read_string(s, t->name);
3095 nb->cache_data = NULL;
3097 /* Check the string for any expansions; if any are found, mark this list
3098 uncacheable unless the user has explicited forced caching. */
3100 if (!forcecache && Ustrchr(nb->string, '$') != NULL) nb->number = -1;
3106 /*************************************************
3107 * Unpick data for a rate limit *
3108 *************************************************/
3110 /* This function is called to unpick smtp_ratelimit_{mail,rcpt} into four
3114 s string, in the form t,b,f,l
3115 where t is the threshold (integer)
3116 b is the initial delay (time)
3117 f is the multiplicative factor (fixed point)
3118 k is the maximum time (time)
3119 threshold where to store threshold
3120 base where to store base in milliseconds
3121 factor where to store factor in milliseconds
3122 limit where to store limit
3124 Returns: nothing (panics on error)
3128 unpick_ratelimit(uschar *s, int *threshold, int *base, double *factor,
3131 uschar bstring[16], lstring[16];
3133 if (sscanf(CS s, "%d, %15[0123456789smhdw.], %lf, %15s", threshold, bstring,
3134 factor, lstring) == 4)
3136 *base = readconf_readtime(bstring, 0, TRUE);
3137 *limit = readconf_readtime(lstring, 0, TRUE);
3138 if (*base >= 0 && *limit >= 0) return;
3140 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "malformed ratelimit data: %s", s);
3146 /*************************************************
3147 * Read main configuration options *
3148 *************************************************/
3150 /* This function is the first to be called for configuration reading. It
3151 opens the configuration file and reads general configuration settings until
3152 it reaches the end of the configuration section. The file is then left open so
3153 that the remaining configuration data can subsequently be read if needed for
3156 The configuration file must be owned either by root or exim, and be writeable
3157 only by root or uid/gid exim. The values for Exim's uid and gid can be changed
3158 in the config file, so the test is done on the compiled in values. A slight
3159 anomaly, to be carefully documented.
3161 The name of the configuration file is taken from a list that is included in the
3162 binary of Exim. It can be altered from the command line, but if that is done,
3163 root privilege is immediately withdrawn unless the caller is root or exim.
3164 The first file on the list that exists is used.
3166 For use on multiple systems that share file systems, first look for a
3167 configuration file whose name has the current node name on the end. If that is
3168 not found, try the generic name. For really contorted configurations, that run
3169 multiple Exims with different uid settings, first try adding the effective uid
3170 before the node name. These complications are going to waste resources on most
3171 systems. Therefore they are available only when requested by compile-time
3175 readconf_main(BOOL nowarn)
3178 struct stat statbuf;
3179 uschar * s, * filename;
3180 const uschar * list = config_main_filelist;
3182 /* Loop through the possible file names */
3184 /* Should never be a tainted list */
3185 while((filename = string_nextinlist(&list, &sep, big_buffer, big_buffer_size)))
3188 /* Cut out all the fancy processing unless specifically wanted */
3190 #if defined(CONFIGURE_FILE_USE_NODE) || defined(CONFIGURE_FILE_USE_EUID)
3191 uschar *suffix = filename + Ustrlen(filename);
3193 /* Try for the node-specific file if a node name exists */
3195 # ifdef CONFIGURE_FILE_USE_NODE
3197 if (uname(&uts) >= 0)
3199 # ifdef CONFIGURE_FILE_USE_EUID
3200 sprintf(CS suffix, ".%ld.%.256s", (long int)original_euid, uts.nodename);
3201 if (!(config_file = Ufopen(filename, "rb")))
3202 # endif /* CONFIGURE_FILE_USE_EUID */
3204 sprintf(CS suffix, ".%.256s", uts.nodename);
3205 config_file = Ufopen(filename, "rb");
3208 # endif /* CONFIGURE_FILE_USE_NODE */
3210 /* Otherwise, try the generic name, possibly with the euid added */
3212 # ifdef CONFIGURE_FILE_USE_EUID
3215 sprintf(CS suffix, ".%ld", (long int)original_euid);
3216 config_file = Ufopen(filename, "rb");
3218 # endif /* CONFIGURE_FILE_USE_EUID */
3220 /* Finally, try the unadorned name */
3225 config_file = Ufopen(filename, "rb");
3227 #else /* if neither defined */
3229 /* This is the common case when the fancy processing is not included. */
3231 config_file = Ufopen(filename, "rb");
3234 /* If the file does not exist, continue to try any others. For any other
3235 error, break out (and die). */
3237 if (config_file || errno != ENOENT) break;
3240 /* On success, save the name for verification; config_filename is used when
3241 logging configuration errors (it changes for .included files) whereas
3242 config_main_filename is the name shown by -bP. Failure to open a configuration
3243 file is a serious disaster. */
3247 uschar *last_slash = Ustrrchr(filename, '/');
3248 config_filename = config_main_filename = string_copy(filename);
3250 /* The config_main_directory we need for the $config_dir expansion.
3251 config_main_filename we need for $config_file expansion.
3252 And config_dir is the directory of the current configuration, used for
3253 relative .includes. We do need to know it's name, as we change our working
3256 if (filename[0] == '/')
3257 config_main_directory = last_slash == filename ? US"/" : string_copyn(filename, last_slash - filename);
3260 /* relative configuration file name: working dir + / + basename(filename) */
3262 uschar buf[PATH_MAX];
3265 if (os_getcwd(buf, PATH_MAX) == NULL)
3267 perror("exim: getcwd");
3270 g = string_cat(NULL, buf);
3272 /* If the dir does not end with a "/", append one */
3273 if (gstring_last_char(g) != '/')
3274 g = string_catn(g, US"/", 1);
3276 /* If the config file contains a "/", extract the directory part */
3278 g = string_catn(g, filename, last_slash - filename);
3280 config_main_directory = string_from_gstring(g);
3282 config_directory = config_main_directory;
3286 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "non-existent configuration file(s): "
3287 "%s", config_main_filelist);
3289 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "%s",
3290 string_open_failed("configuration file %s", filename));
3292 /* Now, once we found and opened our configuration file, we change the directory
3293 to a safe place. Later we change to $spool_directory. */
3295 if (Uchdir("/") < 0)
3297 perror("exim: chdir `/': ");
3301 /* Check the status of the file we have opened, if we have retained root
3302 privileges and the file isn't /dev/null (which *should* be 0666). */
3304 if (f.trusted_config && Ustrcmp(filename, US"/dev/null"))
3306 if (fstat(fileno(config_file), &statbuf) != 0)
3307 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "failed to stat configuration file %s",
3310 if ( statbuf.st_uid != root_uid /* owner not root */
3311 #ifdef CONFIGURE_OWNER
3312 && statbuf.st_uid != config_uid /* owner not the special one */
3315 statbuf.st_gid != root_gid /* group not root & */
3316 #ifdef CONFIGURE_GROUP
3317 && statbuf.st_gid != config_gid /* group not the special one */
3319 && (statbuf.st_mode & 020) != 0 /* group writeable */
3321 (statbuf.st_mode & 2) != 0 /* world writeable */
3323 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "Exim configuration file %s has the "
3324 "wrong owner, group, or mode", big_buffer);
3326 /* Do a dummy store-allocation of a size related to the (toplevel) file size.
3327 This assumes we will need this much storage to handle all the allocations
3328 during startup; it won't help when .include is being used. When it does, it
3329 will cut down on the number of store blocks (and malloc calls, and sbrk
3330 syscalls). It also assume we're on the relevant pool. */
3332 if (statbuf.st_size > 8192)
3334 rmark r = store_mark();
3335 void * dummy = store_get((int)statbuf.st_size, GET_UNTAINTED);
3340 /* Process the main configuration settings. They all begin with a lower case
3341 letter. If we see something starting with an upper case letter, it is taken as
3342 a macro definition. */
3344 while ((s = get_config_line()))
3349 if (config_lineno == 1 && Ustrstr(s, "\xef\xbb\xbf") == s)
3350 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
3351 "found unexpected BOM (Byte Order Mark)");
3355 if (!macro_read_assignment(s)) exim_exit(EXIT_FAILURE);
3359 t = (hide = Ustrncmp(s, "hide", 4) == 0 && isspace(s[4])) ? s + 5 : s;
3361 if (Ustrncmp(t, "domainlist", 10) == 0)
3362 read_named_list(&domainlist_anchor, &domainlist_count,
3363 MAX_NAMED_LIST, t+10, US"domain list", hide);
3365 else if (Ustrncmp(t, "hostlist", 8) == 0)
3366 read_named_list(&hostlist_anchor, &hostlist_count,
3367 MAX_NAMED_LIST, t+8, US"host list", hide);
3369 else if (Ustrncmp(t, "addresslist", 11) == 0)
3370 read_named_list(&addresslist_anchor, &addresslist_count,
3371 MAX_NAMED_LIST, t+11, US"address list", hide);
3373 else if (Ustrncmp(t, "localpartlist", 13) == 0)
3374 read_named_list(&localpartlist_anchor, &localpartlist_count,
3375 MAX_NAMED_LIST, t+13, US"local part list", hide);
3378 (void) readconf_handle_option(s, optionlist_config, optionlist_config_size,
3379 NULL, US"main option \"%s\" unknown");
3383 /* If local_sender_retain is set, local_from_check must be unset. */
3385 if (local_sender_retain && local_from_check)
3386 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "both local_from_check and "
3387 "local_sender_retain are set; this combination is not allowed");
3389 /* If the timezone string is empty, set it to NULL, implying no TZ variable
3392 if (timezone_string && !*timezone_string) timezone_string = NULL;
3394 /* The max retry interval must not be greater than 24 hours. */
3396 if (retry_interval_max > 24*60*60) retry_interval_max = 24*60*60;
3398 /* remote_max_parallel must be > 0 */
3400 if (remote_max_parallel <= 0) remote_max_parallel = 1;
3402 /* Save the configured setting of freeze_tell, so we can re-instate it at the
3403 start of a new SMTP message. */
3405 freeze_tell_config = freeze_tell;
3407 /* The primary host name may be required for expansion of spool_directory
3408 and log_file_path, so make sure it is set asap. It is obtained from uname(),
3409 but if that yields an unqualified value, make a FQDN by using gethostbyname to
3410 canonize it. Some people like upper case letters in their host names, so we
3411 don't force the case. */
3413 if (!primary_hostname)
3415 const uschar * hostname;
3418 if (uname(&uts) < 0)
3419 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "uname() failed to yield host name");
3420 hostname = US uts.nodename;
3422 if (Ustrchr(hostname, '.') == NULL)
3425 struct hostent *hostdata;
3429 && ( !dns_ipv4_lookup
3430 || match_isinlist(hostname, CUSS &dns_ipv4_lookup, 0, NULL, NULL,
3431 MCL_DOMAIN, TRUE, NULL) != OK))
3438 # if HAVE_GETIPNODEBYNAME
3440 hostdata = getipnodebyname(CS hostname, af, 0, &error_num);
3442 hostdata = gethostbyname2(CS hostname, af);
3445 hostdata = gethostbyname(CS hostname);
3449 { hostname = US hostdata->h_name; break; }
3451 if (af == AF_INET) break;
3456 primary_hostname = string_copy(hostname);
3459 /* Set up default value for smtp_active_hostname */
3461 smtp_active_hostname = primary_hostname;
3463 /* If spool_directory wasn't set in the build-time configuration, it must have
3464 got set above. Of course, writing to the log may not work if log_file_path is
3465 not set, but it will at least get to syslog or somewhere, with any luck. */
3467 if (!*spool_directory)
3468 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "spool_directory undefined: cannot "
3471 /* Expand the spool directory name; it may, for example, contain the primary
3472 host name. Same comment about failure. */
3474 if (!(s = expand_string(spool_directory)))
3475 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "failed to expand spool_directory "
3476 "\"%s\": %s", spool_directory, expand_string_message);
3477 spool_directory = s;
3479 /* Expand log_file_path, which must contain "%s" in any component that isn't
3480 the null string or "syslog". It is also allowed to contain one instance of %D
3481 or %M. However, it must NOT contain % followed by anything else. */
3485 const uschar *ss, *sss;
3486 int sep = ':'; /* Fixed for log file path */
3487 if (!(s = expand_string(log_file_path)))
3488 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "failed to expand log_file_path "
3489 "\"%s\": %s", log_file_path, expand_string_message);
3492 /* should never be a tainted list */
3493 while ((sss = string_nextinlist(&ss, &sep, big_buffer, big_buffer_size)))
3496 if (sss[0] == 0 || Ustrcmp(sss, "syslog") == 0) continue;
3497 if (!(t = Ustrstr(sss, "%s")))
3498 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "log_file_path \"%s\" does not "
3499 "contain \"%%s\"", sss);
3501 if ((t = Ustrchr(sss, '%')))
3502 if ((t[1] != 'D' && t[1] != 'M') || Ustrchr(t+2, '%') != NULL)
3503 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "log_file_path \"%s\" contains "
3504 "unexpected \"%%\" character", s);
3510 /* Interpret syslog_facility into an integer argument for 'ident' param to
3511 openlog(). Default is LOG_MAIL set in globals.c. Allow the user to omit the
3514 if (syslog_facility_str)
3517 uschar * s = syslog_facility_str;
3519 if ((Ustrlen(syslog_facility_str) >= 4) &&
3520 (strncmpic(syslog_facility_str, US"log_", 4) == 0))
3523 for (i = 0; i < syslog_list_size; i++)
3524 if (strcmpic(s, syslog_list[i].name) == 0)
3526 syslog_facility = syslog_list[i].value;
3530 if (i >= syslog_list_size)
3531 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
3532 "failed to interpret syslog_facility \"%s\"", syslog_facility_str);
3535 /* Expand pid_file_path */
3539 const uschar * t = expand_cstring(pid_file_path);
3541 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "failed to expand pid_file_path "
3542 "\"%s\": %s", pid_file_path, expand_string_message);
3546 /* Set default value of process_log_path */
3548 if (!process_log_path || !*process_log_path)
3549 process_log_path = string_sprintf("%s/exim-process.info", spool_directory);
3551 /* Compile the regex for matching a UUCP-style "From_" line in an incoming
3554 regex_From = regex_must_compile(uucp_from_pattern, MCS_NOFLAGS, TRUE);
3556 /* Unpick the SMTP rate limiting options, if set */
3558 if (smtp_ratelimit_mail)
3559 unpick_ratelimit(smtp_ratelimit_mail, &smtp_rlm_threshold,
3560 &smtp_rlm_base, &smtp_rlm_factor, &smtp_rlm_limit);
3562 if (smtp_ratelimit_rcpt)
3563 unpick_ratelimit(smtp_ratelimit_rcpt, &smtp_rlr_threshold,
3564 &smtp_rlr_base, &smtp_rlr_factor, &smtp_rlr_limit);
3566 /* The qualify domains default to the primary host name */
3568 if (!qualify_domain_sender)
3569 qualify_domain_sender = primary_hostname;
3570 if (!qualify_domain_recipient)
3571 qualify_domain_recipient = qualify_domain_sender;
3573 /* Setting system_filter_user in the configuration sets the gid as well if a
3574 name is given, but a numerical value does not. */
3576 if (system_filter_uid_set && !system_filter_gid_set)
3578 struct passwd *pw = getpwuid(system_filter_uid);
3580 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "Failed to look up uid %ld",
3581 (long int)system_filter_uid);
3582 system_filter_gid = pw->pw_gid;
3583 system_filter_gid_set = TRUE;
3586 /* If the errors_reply_to field is set, check that it is syntactically valid
3587 and ensure it contains a domain. */
3589 if (errors_reply_to)
3592 int start, end, domain;
3593 uschar *recipient = parse_extract_address(errors_reply_to, &errmess,
3594 &start, &end, &domain, FALSE);
3597 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
3598 "error in errors_reply_to (%s): %s", errors_reply_to, errmess);
3601 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
3602 "errors_reply_to (%s) does not contain a domain", errors_reply_to);
3605 /* If smtp_accept_queue or smtp_accept_max_per_host is set, then
3606 smtp_accept_max must also be set. */
3608 if (smtp_accept_max == 0 && (smtp_accept_queue > 0 || smtp_accept_max_per_host))
3609 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
3610 "smtp_accept_max must be set if smtp_accept_queue or "
3611 "smtp_accept_max_per_host is set");
3613 /* Set up the host number if anything is specified. It is an expanded string
3614 so that it can be computed from the host name, for example. We do this last
3615 so as to ensure that everything else is set up before the expansion. */
3617 if (host_number_string)
3621 uschar *s = expand_string(host_number_string);
3624 log_write(0, LOG_MAIN|LOG_PANIC_DIE,
3625 "failed to expand localhost_number \"%s\": %s",
3626 host_number_string, expand_string_message);
3627 n = Ustrtol(s, &end, 0);
3628 if (Uskip_whitespace(&end))
3629 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
3630 "localhost_number value is not a number: %s", s);
3631 if (n > LOCALHOST_MAX)
3632 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
3633 "localhost_number is greater than the maximum allowed value (%d)",
3639 /* If tls_verify_hosts is set, tls_verify_certificates must also be set */
3641 if ((tls_verify_hosts || tls_try_verify_hosts) && !tls_verify_certificates)
3642 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
3643 "tls_%sverify_hosts is set, but tls_verify_certificates is not set",
3644 tls_verify_hosts ? "" : "try_");
3646 /* Magic number: at time of writing, 1024 has been the long-standing value
3647 used by so many clients, and what Exim used to use always, that it makes
3648 sense to just min-clamp this max-clamp at that. */
3649 if (tls_dh_max_bits < 1024)
3650 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
3651 "tls_dh_max_bits is too small, must be at least 1024 for interop");
3653 /* If openssl_options is set, validate it */
3654 if (openssl_options)
3657 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
3658 "openssl_options is set but we're using GnuTLS");
3661 if (!tls_openssl_options_parse(openssl_options, &dummy))
3662 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
3663 "openssl_options parse error: %s", openssl_options);
3666 #endif /*DISABLE_TLS*/
3668 if (!nowarn && !keep_environment && environ && *environ)
3669 log_write(0, LOG_MAIN,
3670 "Warning: purging the environment.\n"
3671 " Suggested action: use keep_environment.");
3676 /*************************************************
3677 * Initialize one driver *
3678 *************************************************/
3680 /* This is called once the driver's generic options, if any, have been read.
3681 We can now find the driver, set up defaults for the private options, and
3682 unset any "set" bits in the private options table (which might have been
3683 set by another incarnation of the same driver).
3686 d pointer to driver instance block, with generic
3688 drivers_available vector of available drivers
3689 size_of_info size of each block in drivers_available
3690 class class of driver, for error message
3692 Returns: pointer to the driver info block
3695 static driver_info *
3696 init_driver(driver_instance *d, driver_info *drivers_available,
3697 int size_of_info, uschar *class)
3699 for (driver_info * dd = drivers_available; dd->driver_name[0] != 0;
3700 dd = (driver_info *)((US dd) + size_of_info))
3701 if (Ustrcmp(d->driver_name, dd->driver_name) == 0)
3703 int len = dd->options_len;
3705 d->options_block = store_get_perm(len, FALSE);
3706 memcpy(d->options_block, dd->options_block, len);
3707 for (int i = 0; i < *(dd->options_count); i++)
3708 dd->options[i].type &= ~opt_set;
3712 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
3713 "%s %s: cannot find %s driver \"%s\"", class, d->name, class, d->driver_name);
3715 return NULL; /* never obeyed */
3722 driver_init_fini(driver_instance * d, const uschar * class)
3724 if (!d->driver_name)
3725 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
3726 "no driver defined for %s \"%s\"", class, d->name);
3731 /*************************************************
3732 * Initialize driver list *
3733 *************************************************/
3735 /* This function is called for routers, transports, and authentication
3736 mechanisms. It reads the data from the current point in the configuration file
3737 up to the end of the section, and sets up a chain of instance blocks according
3738 to the file's contents. The file will already have been opened by a call to
3739 readconf_main, and must be left open for subsequent reading of further data.
3741 Any errors cause a panic crash. Note that the blocks with names driver_info and
3742 driver_instance must map the first portions of all the _info and _instance
3743 blocks for this shared code to work.
3746 class "router", "transport", or "authenticator"
3747 anchor &routers, &transports, &auths
3748 drivers_available available drivers
3749 size_of_info size of each info block
3750 instance_default points to default data for an instance
3751 instance_size size of instance block
3752 driver_optionlist generic option list
3753 driver_optionlist_count count of generic option list
3759 readconf_driver_init(
3761 driver_instance **anchor,
3762 driver_info *drivers_available,
3764 void *instance_default,
3766 optionlist *driver_optionlist,
3767 int driver_optionlist_count)
3769 driver_instance ** p = anchor;
3770 driver_instance * d = NULL;
3773 while ((buffer = get_config_line()))
3775 uschar name[EXIM_DRIVERNAME_MAX];
3778 /* Read the first name on the line and test for the start of a new driver. A
3779 macro definition indicates the end of the previous driver. If this isn't the
3780 start of a new driver, the line will be re-read. */
3782 s = readconf_readname(name, sizeof(name), buffer);
3784 /* Handle macro definition, first finishing off the initialization of the
3785 previous driver, if any. */
3787 if (isupper(*name) && *s == '=')
3791 /* s is using big_buffer, so this call had better not */
3792 driver_init_fini(d, class);
3795 if (!macro_read_assignment(buffer)) exim_exit(EXIT_FAILURE);
3799 /* If the line starts with a name terminated by a colon, we are at the
3800 start of the definition of a new driver. The rest of the line must be
3805 /* Finish off initializing the previous driver. */
3808 driver_init_fini(d, class);
3810 /* Check that we haven't already got a driver of this name */
3812 for (d = *anchor; d; d = d->next)
3813 if (Ustrcmp(name, d->name) == 0)
3814 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
3815 "there are two %ss called \"%s\"", class, name);
3817 /* Set up a new driver instance data block on the chain, with
3818 its default values installed. */
3820 d = store_get_perm(instance_size, FALSE);
3821 memcpy(d, instance_default, instance_size);
3824 d->name = string_copy(name);
3825 d->srcfile = config_filename;
3826 d->srcline = config_lineno;
3828 /* Clear out the "set" bits in the generic options */
3830 for (int i = 0; i < driver_optionlist_count; i++)
3831 driver_optionlist[i].type &= ~opt_set;
3833 /* Check nothing more on this line, then do the next loop iteration. */
3835 Uskip_whitespace(&s);
3836 if (*s) extra_chars_error(s, US"driver name ", name, US"");
3840 /* Not the start of a new driver. Give an error if we have not set up a
3841 current driver yet. */
3844 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "%s name missing", class);
3846 /* First look to see if this is a generic option; if it is "driver",
3847 initialize the driver. If is it not a generic option, we can look for a
3848 private option provided that the driver has been previously set up. */
3850 if (readconf_handle_option(buffer, driver_optionlist,
3851 driver_optionlist_count, d, NULL))
3853 if (!d->info && d->driver_name)
3854 init_driver(d, drivers_available, size_of_info, class);
3857 /* Handle private options - pass the generic block because some may
3858 live therein. A flag with each option indicates if it is in the public
3862 readconf_handle_option(buffer, d->info->options,
3863 *(d->info->options_count), d, US"option \"%s\" unknown");
3865 /* The option is not generic and the driver name has not yet been given. */
3867 else log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "option \"%s\" unknown "
3868 "(\"driver\" must be specified before any private options)", name);
3871 /* Run the initialization function for the final driver. */
3874 driver_init_fini(d, class);
3879 /*************************************************
3880 * Check driver dependency *
3881 *************************************************/
3883 /* This function is passed a driver instance and a string. It checks whether
3884 any of the string options for the driver contains the given string as an
3888 d points to a driver instance block
3889 s the string to search for
3891 Returns: TRUE if a dependency is found
3895 readconf_depends(driver_instance *d, uschar *s)
3897 int count = *(d->info->options_count);
3900 for (optionlist * ol = d->info->options; ol < d->info->options + count; ol++)
3901 if ((ol->type & opt_mask) == opt_stringptr)
3903 void * options_block = ol->type & opt_public ? (void *)d : d->options_block;
3904 uschar * value = *USS(US options_block + ol->v.offset);
3906 if (value && (ss = Ustrstr(value, s)) != NULL)
3908 if (ss <= value || (ss[-1] != '$' && ss[-1] != '{') ||
3909 isalnum(ss[Ustrlen(s)])) continue;
3910 DEBUG(D_transport) debug_printf("driver %s: \"%s\" option depends on %s\n",
3911 d->name, ol->name, s);
3916 DEBUG(D_transport) debug_printf("driver %s does not depend on %s\n", d->name, s);
3923 /*************************************************
3924 * Decode an error type for retries *
3925 *************************************************/
3927 /* This function is global because it is also called from the main
3928 program when testing retry information. It decodes strings such as "quota_7d"
3929 into numerical error codes.
3932 pp points to start of text
3933 p points past end of text
3934 basic_errno points to an int to receive the main error number
3935 more_errno points to an int to receive the secondary error data
3937 Returns: NULL if decoded correctly; else points to error text
3941 readconf_retry_error(const uschar *pp, const uschar *p,
3942 int *basic_errno, int *more_errno)
3945 const uschar *q = pp;
3946 while (q < p && *q != '_') q++;
3949 if (len == 5 && strncmpic(pp, US"quota", len) == 0)
3951 *basic_errno = ERRNO_EXIMQUOTA;
3952 if (q != p && (*more_errno = readconf_readtime(q+1, *p, FALSE)) < 0)
3953 return US"bad time value";
3956 else if (len == 7 && strncmpic(pp, US"refused", len) == 0)
3958 *basic_errno = ECONNREFUSED;
3961 if (strncmpic(q+1, US"MX", p-q-1) == 0) *more_errno = 'M';
3962 else if (strncmpic(q+1, US"A", p-q-1) == 0) *more_errno = 'A';
3963 else return US"A or MX expected after \"refused\"";
3967 else if (len == 7 && strncmpic(pp, US"timeout", len) == 0)
3969 *basic_errno = ETIMEDOUT;
3973 int xlen = p - q - 1;
3974 const uschar *x = q + 1;
3976 static uschar *extras[] =
3977 { US"A", US"MX", US"connect", US"connect_A", US"connect_MX" };
3978 static int values[] =
3979 { 'A', 'M', RTEF_CTOUT, RTEF_CTOUT|'A', RTEF_CTOUT|'M' };
3981 for (i = 0; i < nelem(extras); i++)
3982 if (strncmpic(x, extras[i], xlen) == 0)
3984 *more_errno = values[i];
3988 if (i >= nelem(extras))
3989 if (strncmpic(x, US"DNS", xlen) == 0)
3990 log_write(0, LOG_MAIN|LOG_PANIC, "\"timeout_dns\" is no longer "
3991 "available in retry rules (it has never worked) - treated as "
3994 return US"\"A\", \"MX\", or \"connect\" expected after \"timeout\"";
3998 else if (strncmpic(pp, US"mail_4", 6) == 0 ||
3999 strncmpic(pp, US"rcpt_4", 6) == 0 ||
4000 strncmpic(pp, US"data_4", 6) == 0)
4003 int x = 255; /* means "any 4xx code" */
4004 if (p != pp + 8) bad = TRUE; else
4006 int a = pp[6], b = pp[7];
4010 if (isdigit(b)) x += b - '0';
4011 else if (b == 'x') x += 100;
4014 else if (a != 'x' || b != 'x') bad = TRUE;
4018 return string_sprintf("%.4s_4 must be followed by xx, dx, or dd, where "
4019 "x is literal and d is any digit", pp);
4021 *basic_errno = *pp == 'm' ? ERRNO_MAIL4XX :
4022 *pp == 'r' ? ERRNO_RCPT4XX : ERRNO_DATA4XX;
4023 *more_errno = x << 8;
4026 else if (len == 4 && strncmpic(pp, US"auth", len) == 0 &&
4027 strncmpic(q+1, US"failed", p-q-1) == 0)
4028 *basic_errno = ERRNO_AUTHFAIL;
4030 else if (strncmpic(pp, US"lost_connection", p - pp) == 0)
4031 *basic_errno = ERRNO_SMTPCLOSED;
4033 else if (strncmpic(pp, US"tls_required", p - pp) == 0)
4034 *basic_errno = ERRNO_TLSREQUIRED;
4036 else if (strncmpic(pp, US"lookup", p - pp) == 0)
4037 *basic_errno = ERRNO_UNKNOWNHOST;
4039 else if (len != 1 || Ustrncmp(pp, "*", 1) != 0)
4040 return string_sprintf("unknown or malformed retry error \"%.*s\"", (int) (p-pp), pp);
4048 /*************************************************
4049 * Read retry information *
4050 *************************************************/
4052 /* Each line of retry information contains:
4054 . A domain name pattern or an address pattern;
4056 . An error name, possibly with additional data, or *;
4058 . An optional sequence of retry items, each consisting of an identifying
4059 letter, a cutoff time, and optional parameters.
4061 All this is decoded and placed into a control block. */
4064 /* Subroutine to read an argument, preceded by a comma and terminated
4065 by comma, semicolon, whitespace, or newline. The types are: 0 = time value,
4066 1 = fixed point number (returned *1000).
4069 paddr pointer to pointer to current character; updated
4070 type 0 => read a time; 1 => read a fixed point number
4072 Returns: time in seconds or fixed point number * 1000
4076 retry_arg(const uschar ** paddr, int type)
4078 const uschar * p = *paddr, * pp;
4080 if (*p++ != ',') log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "comma expected");
4082 Uskip_whitespace(&p);
4084 while (isalnum(*p) || (type == 1 && *p == '.')) p++;
4086 if (*p && !isspace(*p) && *p != ',' && *p != ';')
4087 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "comma or semicolon expected");
4092 case 0: return readconf_readtime(pp, *p, FALSE);
4093 case 1: return readconf_readfixed(pp, *p);
4095 return 0; /* Keep picky compilers happy */
4098 /* The function proper */
4101 readconf_retries(void)
4103 retry_config **chain = &retries;
4107 while ((p = get_config_line()))
4109 retry_rule **rchain;
4113 next = store_get(sizeof(retry_config), GET_UNTAINTED);
4116 chain = &(next->next);
4117 next->basic_errno = next->more_errno = 0;
4118 next->senders = NULL;
4120 rchain = &(next->rules);
4122 next->pattern = string_dequote(&p);
4123 Uskip_whitespace(&p);
4125 while (mac_isgraph(*p)) p++;
4126 if (p - pp <= 0) log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
4127 "missing error type in retry rule");
4129 /* Test error names for things we understand. */
4131 if ((error = readconf_retry_error(pp, p, &next->basic_errno,
4132 &next->more_errno)))
4133 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "%s", error);
4135 /* There may be an optional address list of senders to be used as another
4136 constraint on the rule. This was added later, so the syntax is a bit of a
4137 fudge. Anything that is not a retry rule starting "F," or "G," is treated as
4140 Uskip_whitespace(&p);
4141 if (Ustrncmp(p, "senders", 7) == 0)
4144 Uskip_whitespace(&p);
4145 if (*p++ != '=') log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
4146 "\"=\" expected after \"senders\" in retry rule");
4147 Uskip_whitespace(&p);
4148 next->senders = string_dequote(&p);
4151 /* Now the retry rules. Keep the maximum timeout encountered. */
4153 Uskip_whitespace(&p);
4157 retry_rule * rule = store_get(sizeof(retry_rule), GET_UNTAINTED);
4159 rchain = &(rule->next);
4161 rule->rule = toupper(*p++);
4162 rule->timeout = retry_arg(&p, 0);
4163 if (rule->timeout > retry_maximum_timeout)
4164 retry_maximum_timeout = rule->timeout;
4168 case 'F': /* Fixed interval */
4169 rule->p1 = retry_arg(&p, 0);
4172 case 'G': /* Geometrically increasing intervals */
4173 case 'H': /* Ditto, but with randomness */
4174 rule->p1 = retry_arg(&p, 0);
4175 rule->p2 = retry_arg(&p, 1);
4179 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "unknown retry rule letter");
4183 if (rule->timeout <= 0 || rule->p1 <= 0 ||
4184 (rule->rule != 'F' && rule->p2 < 1000))
4185 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
4186 "bad parameters for retry rule");
4188 if (Uskip_whitespace(&p) == ';')
4191 Uskip_whitespace(&p);
4194 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "semicolon expected");
4201 /*************************************************
4202 * Initialize authenticators *
4203 *************************************************/
4205 /* Read the authenticators section of the configuration file.
4214 #ifndef DISABLE_PIPE_CONNECT
4218 readconf_driver_init(US"authenticator",
4219 (driver_instance **)(&auths), /* chain anchor */
4220 (driver_info *)auths_available, /* available drivers */
4221 sizeof(auth_info), /* size of info block */
4222 &auth_defaults, /* default values for generic options */
4223 sizeof(auth_instance), /* size of instance block */
4224 optionlist_auths, /* generic options */
4225 optionlist_auths_size);
4227 for (auth_instance * au = auths; au; au = au->next)
4229 if (!au->public_name)
4230 log_write(0, LOG_PANIC_DIE|LOG_CONFIG, "no public name specified for "
4231 "the %s authenticator", au->name);
4233 for (auth_instance * bu = au->next; bu; bu = bu->next)
4234 if (strcmpic(au->public_name, bu->public_name) == 0)
4235 if ( au->client && bu->client
4236 || au->server && bu->server)
4237 log_write(0, LOG_PANIC_DIE|LOG_CONFIG, "two %s authenticators "
4238 "(%s and %s) have the same public name (%s)",
4239 au->client && bu->client ? US"client" : US"server",
4240 au->name, bu->name, au->public_name);
4241 #ifndef DISABLE_PIPE_CONNECT
4245 #ifndef DISABLE_PIPE_CONNECT
4246 f.smtp_in_early_pipe_no_auth = nauths > 16;
4251 /* For error messages, a string describing the config location associated
4252 with current processing. NULL if we are not in an authenticator. */
4255 authenticator_current_name(void)
4257 if (!authenticator_name) return NULL;
4258 return string_sprintf(" (authenticator %s, %s %d)", authenticator_name, driver_srcfile, driver_srcline);
4265 /*************************************************
4266 * Read ACL information *
4267 *************************************************/
4269 /* If this run of Exim is not doing something that involves receiving a
4270 message, we can just skip over the ACL information. No need to parse it.
4272 First, we have a function for acl_read() to call back to get the next line. We
4273 need to remember the line we passed, because at the end it will contain the
4274 name of the next ACL. */
4276 static uschar *acl_line;
4281 acl_line = get_config_line();
4286 /* Now the main function:
4295 /* Read each ACL and add it into the tree. Macro (re)definitions are allowed
4298 acl_line = get_config_line();
4302 uschar name[EXIM_DRIVERNAME_MAX];
4305 const uschar * p = readconf_readname(name, sizeof(name), acl_line);
4307 if (isupper(*name) && *p == '=')
4309 if (!macro_read_assignment(acl_line)) exim_exit(EXIT_FAILURE);
4310 acl_line = get_config_line();
4314 if (*p != ':' || name[0] == 0)
4315 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "missing or malformed ACL name");
4317 node = store_get_perm(sizeof(tree_node) + Ustrlen(name), name);
4318 Ustrcpy(node->name, name);
4319 if (!tree_insertnode(&acl_anchor, node))
4320 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
4321 "there are two ACLs called \"%s\"", name);
4323 node->data.ptr = acl_read(acl_callback, &error);
4325 if (node->data.ptr == NULL && error != NULL)
4326 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "error in ACL: %s", error);
4332 /*************************************************
4333 * Read configuration for local_scan() *
4334 *************************************************/
4336 /* This function is called after "begin local_scan" is encountered in the
4337 configuration file. If the local_scan() function allows for configuration
4338 options, we can process them. Otherwise, we expire in a panic.
4345 local_scan_init(void)
4347 #ifndef LOCAL_SCAN_HAS_OPTIONS
4348 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "local_scan() options not supported: "
4349 "(LOCAL_SCAN_HAS_OPTIONS not defined in Local/Makefile)");
4353 while ((p = get_config_line()))
4354 (void) readconf_handle_option(p, local_scan_options, local_scan_options_count,
4355 NULL, US"local_scan option \"%s\" unknown");
4361 /*************************************************
4362 * Read rest of configuration (after main) *
4363 *************************************************/
4365 /* This function reads the rest of the runtime configuration, after the main
4366 configuration. It is called only when actually needed. Each subsequent section
4367 of the configuration starts with a line of the form
4371 where the name is "routers", "transports", etc. A section is terminated by
4372 hitting the next "begin" line, and the next name is left in next_section.
4373 Because it may confuse people as to whether the names are singular or plural,
4374 we add "s" if it's missing. There is always enough room in next_section for
4375 this. This function is basically just a switch.
4381 static uschar *section_list[] = {
4395 while(next_section[0] != 0)
4399 int last = nelem(section_list);
4401 int n = Ustrlen(next_section);
4403 if (tolower(next_section[n-1]) != 's') Ustrcpy(next_section+n, US"s");
4407 int c = strcmpic(next_section, section_list[mid]);
4409 if (c > 0) first = mid + 1; else last = mid;
4411 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
4412 "\"%.*s\" is not a known configuration section name", n, next_section);
4413 mid = (last + first)/2;
4417 if (((had ^= bit) & bit) == 0)
4418 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
4419 "\"%.*s\" section is repeated in the configuration file", n,
4424 case 0: readconf_acl(); break;
4425 case 1: auths_init(); break;
4426 case 2: local_scan_init(); break;
4427 case 3: readconf_retries(); break;
4428 case 4: readconf_rewrites(); break;
4429 case 5: route_init(); break;
4430 case 6: transport_init(); break;
4434 (void)fclose(config_file);
4437 /* Init the storage for the pre-parsed config lines */
4439 readconf_save_config(const uschar *s)
4441 save_config_line(string_sprintf("# Exim Configuration (%s)",
4442 f.running_in_test_harness ? US"X" : s));
4446 save_config_position(const uschar *file, int line)
4448 save_config_line(string_sprintf("# %d \"%s\"", line, file));
4451 /* Append a pre-parsed logical line to the config lines store,
4452 this operates on a global (static) list that holds all the pre-parsed
4453 config lines, we do no further processing here, output formatting and
4454 honouring of <hide> or macros will be done during output */
4457 save_config_line(const uschar* line)
4459 static config_line_item *current;
4460 config_line_item *next;
4462 next = (config_line_item*) store_get(sizeof(config_line_item), GET_UNTAINTED);
4463 next->line = string_copy(line);
4466 if (!config_lines) config_lines = next;
4467 else current->next = next;
4472 /* List the parsed config lines, care about nice formatting and
4473 hide the <hide> values unless we're the admin user */
4475 print_config(BOOL admin, BOOL terse)
4477 const int TS = terse ? 0 : 2;
4481 for (const config_line_item * i = config_lines; i; i = i->next)
4483 uschar * current, * p;
4485 if (r) store_reset(r);
4488 /* skip over to the first non-space */
4489 current = string_copy(i->line);
4490 if (!Uskip_whitespace(¤t))
4493 /* Collapse runs of spaces. We stop this if we encounter one of the
4494 following characters: "'$, as this may indicate careful formatting */
4496 for (p = current; *p; p++) if (isspace(*p))
4499 if (*p != ' ') *p = ' ';
4501 Uskip_whitespace(&p);
4504 memmove(p+1, next, Ustrlen(next)+1);
4506 if (*next == '"' || *next == '\'' || *next == '$')
4511 if (current[0] == '#')
4514 /* begin lines are left aligned */
4515 else if (Ustrncmp(current, "begin", 5) == 0 && isspace(current[5]))
4517 if (!terse) puts("");
4522 /* router/acl/transport block names */
4523 else if (current[Ustrlen(current)-1] == ':' && !Ustrchr(current, '='))
4525 if (!terse) puts("");
4526 printf("%*s%s\n", TS, "", current);
4530 /* hidden lines (all MACROS or lines prefixed with "hide") */
4532 && ( isupper(*current)
4533 || Ustrncmp(current, "hide", 4) == 0 && isspace(current[4])
4537 if ((p = Ustrchr(current, '=')))
4540 printf("%*s%s= %s\n", indent, "", current, CCS hidden);
4542 /* e.g.: hide split_spool_directory */
4544 printf("%*s\n", indent, CCS hidden);
4548 /* rest is public */
4549 printf("%*s%s\n", indent, "", current);
4551 if (r) store_reset(r);
4554 #endif /*!MACRO_PREDEF*/
4557 /* End of readconf.c */