1 /*************************************************
2 * Exim - an Internet mail transport agent *
3 *************************************************/
5 /* Copyright (c) University of Cambridge 1995 - 2018 */
6 /* Copyright (c) The Exim Maintainers 2020 */
7 /* See the file NOTICE for conditions of use and distribution. */
9 /* Functions for reading the configuration file, and for displaying
10 overall configuration values. Thanks to Brian Candler for the original
11 implementation of the conditional .ifdef etc. */
16 # include "macro_predef.h"
19 #define READCONF_DEBUG if (FALSE) /* Change to TRUE to enable */
22 static uschar * syslog_facility_str;
23 static void fn_smtp_receive_timeout(const uschar *, const uschar *, unsigned);
25 /*************************************************
26 * Main configuration options *
27 *************************************************/
29 /* The list of options that can be set in the main configuration file. This
30 must be in alphabetic order because it is searched by binary chop. */
32 static optionlist optionlist_config[] = {
33 { "*set_exim_group", opt_bool|opt_hidden, {&exim_gid_set} },
34 { "*set_exim_user", opt_bool|opt_hidden, {&exim_uid_set} },
35 { "*set_system_filter_group", opt_bool|opt_hidden, {&system_filter_gid_set} },
36 { "*set_system_filter_user", opt_bool|opt_hidden, {&system_filter_uid_set} },
37 { "accept_8bitmime", opt_bool, {&accept_8bitmime} },
38 { "acl_not_smtp", opt_stringptr, {&acl_not_smtp} },
39 #ifdef WITH_CONTENT_SCAN
40 { "acl_not_smtp_mime", opt_stringptr, {&acl_not_smtp_mime} },
42 { "acl_not_smtp_start", opt_stringptr, {&acl_not_smtp_start} },
43 { "acl_smtp_auth", opt_stringptr, {&acl_smtp_auth} },
44 { "acl_smtp_connect", opt_stringptr, {&acl_smtp_connect} },
45 { "acl_smtp_data", opt_stringptr, {&acl_smtp_data} },
47 { "acl_smtp_data_prdr", opt_stringptr, {&acl_smtp_data_prdr} },
50 { "acl_smtp_dkim", opt_stringptr, {&acl_smtp_dkim} },
52 { "acl_smtp_etrn", opt_stringptr, {&acl_smtp_etrn} },
53 { "acl_smtp_expn", opt_stringptr, {&acl_smtp_expn} },
54 { "acl_smtp_helo", opt_stringptr, {&acl_smtp_helo} },
55 { "acl_smtp_mail", opt_stringptr, {&acl_smtp_mail} },
56 { "acl_smtp_mailauth", opt_stringptr, {&acl_smtp_mailauth} },
57 #ifdef WITH_CONTENT_SCAN
58 { "acl_smtp_mime", opt_stringptr, {&acl_smtp_mime} },
60 { "acl_smtp_notquit", opt_stringptr, {&acl_smtp_notquit} },
61 { "acl_smtp_predata", opt_stringptr, {&acl_smtp_predata} },
62 { "acl_smtp_quit", opt_stringptr, {&acl_smtp_quit} },
63 { "acl_smtp_rcpt", opt_stringptr, {&acl_smtp_rcpt} },
65 { "acl_smtp_starttls", opt_stringptr, {&acl_smtp_starttls} },
67 { "acl_smtp_vrfy", opt_stringptr, {&acl_smtp_vrfy} },
68 { "add_environment", opt_stringptr, {&add_environment} },
69 { "admin_groups", opt_gidlist, {&admin_groups} },
70 { "allow_domain_literals", opt_bool, {&allow_domain_literals} },
71 { "allow_mx_to_ip", opt_bool, {&allow_mx_to_ip} },
72 { "allow_utf8_domains", opt_bool, {&allow_utf8_domains} },
73 { "auth_advertise_hosts", opt_stringptr, {&auth_advertise_hosts} },
74 { "auto_thaw", opt_time, {&auto_thaw} },
75 #ifdef WITH_CONTENT_SCAN
76 { "av_scanner", opt_stringptr, {&av_scanner} },
78 { "bi_command", opt_stringptr, {&bi_command} },
79 #ifdef EXPERIMENTAL_BRIGHTMAIL
80 { "bmi_config_file", opt_stringptr, {&bmi_config_file} },
82 { "bounce_message_file", opt_stringptr, {&bounce_message_file} },
83 { "bounce_message_text", opt_stringptr, {&bounce_message_text} },
84 { "bounce_return_body", opt_bool, {&bounce_return_body} },
85 { "bounce_return_linesize_limit", opt_mkint, {&bounce_return_linesize_limit} },
86 { "bounce_return_message", opt_bool, {&bounce_return_message} },
87 { "bounce_return_size_limit", opt_mkint, {&bounce_return_size_limit} },
88 { "bounce_sender_authentication",opt_stringptr,{&bounce_sender_authentication} },
89 { "callout_domain_negative_expire", opt_time, {&callout_cache_domain_negative_expire} },
90 { "callout_domain_positive_expire", opt_time, {&callout_cache_domain_positive_expire} },
91 { "callout_negative_expire", opt_time, {&callout_cache_negative_expire} },
92 { "callout_positive_expire", opt_time, {&callout_cache_positive_expire} },
93 { "callout_random_local_part",opt_stringptr, {&callout_random_local_part} },
94 { "check_log_inodes", opt_int, {&check_log_inodes} },
95 { "check_log_space", opt_Kint, {&check_log_space} },
96 { "check_rfc2047_length", opt_bool, {&check_rfc2047_length} },
97 { "check_spool_inodes", opt_int, {&check_spool_inodes} },
98 { "check_spool_space", opt_Kint, {&check_spool_space} },
99 { "chunking_advertise_hosts", opt_stringptr, {&chunking_advertise_hosts} },
100 { "commandline_checks_require_admin", opt_bool,{&commandline_checks_require_admin} },
101 { "daemon_smtp_port", opt_stringptr|opt_hidden, {&daemon_smtp_port} },
102 { "daemon_smtp_ports", opt_stringptr, {&daemon_smtp_port} },
103 { "daemon_startup_retries", opt_int, {&daemon_startup_retries} },
104 { "daemon_startup_sleep", opt_time, {&daemon_startup_sleep} },
105 #ifdef EXPERIMENTAL_DCC
106 { "dcc_direct_add_header", opt_bool, {&dcc_direct_add_header} },
107 { "dccifd_address", opt_stringptr, {&dccifd_address} },
108 { "dccifd_options", opt_stringptr, {&dccifd_options} },
110 { "debug_store", opt_bool, {&debug_store} },
111 { "delay_warning", opt_timelist, {&delay_warning} },
112 { "delay_warning_condition", opt_stringptr, {&delay_warning_condition} },
113 { "deliver_drop_privilege", opt_bool, {&deliver_drop_privilege} },
114 { "deliver_queue_load_max", opt_fixed, {&deliver_queue_load_max} },
115 { "delivery_date_remove", opt_bool, {&delivery_date_remove} },
116 #ifdef ENABLE_DISABLE_FSYNC
117 { "disable_fsync", opt_bool, {&disable_fsync} },
119 { "disable_ipv6", opt_bool, {&disable_ipv6} },
121 { "dkim_verify_hashes", opt_stringptr, {&dkim_verify_hashes} },
122 { "dkim_verify_keytypes", opt_stringptr, {&dkim_verify_keytypes} },
123 { "dkim_verify_min_keysizes", opt_stringptr, {&dkim_verify_min_keysizes} },
124 { "dkim_verify_minimal", opt_bool, {&dkim_verify_minimal} },
125 { "dkim_verify_signers", opt_stringptr, {&dkim_verify_signers} },
128 { "dmarc_forensic_sender", opt_stringptr, {&dmarc_forensic_sender} },
129 { "dmarc_history_file", opt_stringptr, {&dmarc_history_file} },
130 { "dmarc_tld_file", opt_stringptr, {&dmarc_tld_file} },
132 { "dns_again_means_nonexist", opt_stringptr, {&dns_again_means_nonexist} },
133 { "dns_check_names_pattern", opt_stringptr, {&check_dns_names_pattern} },
134 { "dns_cname_loops", opt_int, {&dns_cname_loops} },
135 { "dns_csa_search_limit", opt_int, {&dns_csa_search_limit} },
136 { "dns_csa_use_reverse", opt_bool, {&dns_csa_use_reverse} },
137 { "dns_dnssec_ok", opt_int, {&dns_dnssec_ok} },
138 { "dns_ipv4_lookup", opt_stringptr, {&dns_ipv4_lookup} },
139 { "dns_retrans", opt_time, {&dns_retrans} },
140 { "dns_retry", opt_int, {&dns_retry} },
141 { "dns_trust_aa", opt_stringptr, {&dns_trust_aa} },
142 { "dns_use_edns0", opt_int, {&dns_use_edns0} },
143 /* This option is now a no-op, retained for compatibility */
144 { "drop_cr", opt_bool, {&drop_cr} },
145 /*********************************************************/
146 { "dsn_advertise_hosts", opt_stringptr, {&dsn_advertise_hosts} },
147 { "dsn_from", opt_stringptr, {&dsn_from} },
148 { "envelope_to_remove", opt_bool, {&envelope_to_remove} },
149 { "errors_copy", opt_stringptr, {&errors_copy} },
150 { "errors_reply_to", opt_stringptr, {&errors_reply_to} },
151 #ifndef DISABLE_EVENT
152 { "event_action", opt_stringptr, {&event_action} },
154 { "exim_group", opt_gid, {&exim_gid} },
155 { "exim_path", opt_stringptr, {&exim_path} },
156 { "exim_user", opt_uid, {&exim_uid} },
157 { "exim_version", opt_stringptr, {&version_string} },
158 { "extra_local_interfaces", opt_stringptr, {&extra_local_interfaces} },
159 { "extract_addresses_remove_arguments", opt_bool, {&extract_addresses_remove_arguments} },
160 { "finduser_retries", opt_int, {&finduser_retries} },
161 { "freeze_tell", opt_stringptr, {&freeze_tell} },
162 { "gecos_name", opt_stringptr, {&gecos_name} },
163 { "gecos_pattern", opt_stringptr, {&gecos_pattern} },
165 { "gnutls_allow_auto_pkcs11", opt_bool, {&gnutls_allow_auto_pkcs11} },
166 { "gnutls_compat_mode", opt_bool, {&gnutls_compat_mode} },
168 { "header_line_maxsize", opt_int, {&header_line_maxsize} },
169 { "header_maxsize", opt_int, {&header_maxsize} },
170 { "headers_charset", opt_stringptr, {&headers_charset} },
171 { "helo_accept_junk_hosts", opt_stringptr, {&helo_accept_junk_hosts} },
172 { "helo_allow_chars", opt_stringptr, {&helo_allow_chars} },
173 { "helo_lookup_domains", opt_stringptr, {&helo_lookup_domains} },
174 { "helo_try_verify_hosts", opt_stringptr, {&helo_try_verify_hosts} },
175 { "helo_verify_hosts", opt_stringptr, {&helo_verify_hosts} },
176 { "hold_domains", opt_stringptr, {&hold_domains} },
177 { "host_lookup", opt_stringptr, {&host_lookup} },
178 { "host_lookup_order", opt_stringptr, {&host_lookup_order} },
179 { "host_reject_connection", opt_stringptr, {&host_reject_connection} },
180 { "hosts_connection_nolog", opt_stringptr, {&hosts_connection_nolog} },
182 { "hosts_proxy", opt_stringptr, {&hosts_proxy} },
184 { "hosts_treat_as_local", opt_stringptr, {&hosts_treat_as_local} },
186 { "ibase_servers", opt_stringptr, {&ibase_servers} },
188 { "ignore_bounce_errors_after", opt_time, {&ignore_bounce_errors_after} },
189 { "ignore_fromline_hosts", opt_stringptr, {&ignore_fromline_hosts} },
190 { "ignore_fromline_local", opt_bool, {&ignore_fromline_local} },
191 { "keep_environment", opt_stringptr, {&keep_environment} },
192 { "keep_malformed", opt_time, {&keep_malformed} },
194 { "ldap_ca_cert_dir", opt_stringptr, {&eldap_ca_cert_dir} },
195 { "ldap_ca_cert_file", opt_stringptr, {&eldap_ca_cert_file} },
196 { "ldap_cert_file", opt_stringptr, {&eldap_cert_file} },
197 { "ldap_cert_key", opt_stringptr, {&eldap_cert_key} },
198 { "ldap_cipher_suite", opt_stringptr, {&eldap_cipher_suite} },
199 { "ldap_default_servers", opt_stringptr, {&eldap_default_servers} },
200 { "ldap_require_cert", opt_stringptr, {&eldap_require_cert} },
201 { "ldap_start_tls", opt_bool, {&eldap_start_tls} },
202 { "ldap_version", opt_int, {&eldap_version} },
204 { "local_from_check", opt_bool, {&local_from_check} },
205 { "local_from_prefix", opt_stringptr, {&local_from_prefix} },
206 { "local_from_suffix", opt_stringptr, {&local_from_suffix} },
207 { "local_interfaces", opt_stringptr, {&local_interfaces} },
208 #ifdef HAVE_LOCAL_SCAN
209 { "local_scan_timeout", opt_time, {&local_scan_timeout} },
211 { "local_sender_retain", opt_bool, {&local_sender_retain} },
212 { "localhost_number", opt_stringptr, {&host_number_string} },
213 { "log_file_path", opt_stringptr, {&log_file_path} },
214 { "log_selector", opt_stringptr, {&log_selector_string} },
215 { "log_timezone", opt_bool, {&log_timezone} },
216 { "lookup_open_max", opt_int, {&lookup_open_max} },
217 { "max_username_length", opt_int, {&max_username_length} },
218 { "message_body_newlines", opt_bool, {&message_body_newlines} },
219 { "message_body_visible", opt_mkint, {&message_body_visible} },
220 { "message_id_header_domain", opt_stringptr, {&message_id_domain} },
221 { "message_id_header_text", opt_stringptr, {&message_id_text} },
222 { "message_logs", opt_bool, {&message_logs} },
223 { "message_size_limit", opt_stringptr, {&message_size_limit} },
224 #ifdef SUPPORT_MOVE_FROZEN_MESSAGES
225 { "move_frozen_messages", opt_bool, {&move_frozen_messages} },
227 { "mua_wrapper", opt_bool, {&mua_wrapper} },
229 { "mysql_servers", opt_stringptr, {&mysql_servers} },
231 { "never_users", opt_uidlist, {&never_users} },
232 { "notifier_socket", opt_stringptr, {¬ifier_socket} },
234 { "openssl_options", opt_stringptr, {&openssl_options} },
237 { "oracle_servers", opt_stringptr, {&oracle_servers} },
239 { "percent_hack_domains", opt_stringptr, {&percent_hack_domains} },
241 { "perl_at_start", opt_bool, {&opt_perl_at_start} },
242 { "perl_startup", opt_stringptr, {&opt_perl_startup} },
243 { "perl_taintmode", opt_bool, {&opt_perl_taintmode} },
246 { "pgsql_servers", opt_stringptr, {&pgsql_servers} },
248 { "pid_file_path", opt_stringptr, {&pid_file_path} },
249 { "pipelining_advertise_hosts", opt_stringptr, {&pipelining_advertise_hosts} },
250 #ifndef DISABLE_PIPE_CONNECT
251 { "pipelining_connect_advertise_hosts", opt_stringptr,
252 {&pipe_connect_advertise_hosts} },
255 { "prdr_enable", opt_bool, {&prdr_enable} },
257 { "preserve_message_logs", opt_bool, {&preserve_message_logs} },
258 { "primary_hostname", opt_stringptr, {&primary_hostname} },
259 { "print_topbitchars", opt_bool, {&print_topbitchars} },
260 { "process_log_path", opt_stringptr, {&process_log_path} },
261 { "prod_requires_admin", opt_bool, {&prod_requires_admin} },
262 { "qualify_domain", opt_stringptr, {&qualify_domain_sender} },
263 { "qualify_recipient", opt_stringptr, {&qualify_domain_recipient} },
264 { "queue_domains", opt_stringptr, {&queue_domains} },
265 #ifdef EXPERIMENTAL_QUEUE_RAMP
266 { "queue_fast_ramp", opt_bool, {&queue_fast_ramp} },
268 { "queue_list_requires_admin",opt_bool, {&queue_list_requires_admin} },
269 { "queue_only", opt_bool, {&queue_only} },
270 { "queue_only_file", opt_stringptr, {&queue_only_file} },
271 { "queue_only_load", opt_fixed, {&queue_only_load} },
272 { "queue_only_load_latch", opt_bool, {&queue_only_load_latch} },
273 { "queue_only_override", opt_bool, {&queue_only_override} },
274 { "queue_run_in_order", opt_bool, {&queue_run_in_order} },
275 { "queue_run_max", opt_stringptr, {&queue_run_max} },
276 { "queue_smtp_domains", opt_stringptr, {&queue_smtp_domains} },
277 { "receive_timeout", opt_time, {&receive_timeout} },
278 { "received_header_text", opt_stringptr, {&received_header_text} },
279 { "received_headers_max", opt_int, {&received_headers_max} },
280 { "recipient_unqualified_hosts", opt_stringptr, {&recipient_unqualified_hosts} },
281 { "recipients_max", opt_int, {&recipients_max} },
282 { "recipients_max_reject", opt_bool, {&recipients_max_reject} },
284 { "redis_servers", opt_stringptr, {&redis_servers} },
286 { "remote_max_parallel", opt_int, {&remote_max_parallel} },
287 { "remote_sort_domains", opt_stringptr, {&remote_sort_domains} },
288 { "retry_data_expire", opt_time, {&retry_data_expire} },
289 { "retry_interval_max", opt_time, {&retry_interval_max} },
290 { "return_path_remove", opt_bool, {&return_path_remove} },
291 { "return_size_limit", opt_mkint|opt_hidden, {&bounce_return_size_limit} },
292 { "rfc1413_hosts", opt_stringptr, {&rfc1413_hosts} },
293 { "rfc1413_query_timeout", opt_time, {&rfc1413_query_timeout} },
294 { "sender_unqualified_hosts", opt_stringptr, {&sender_unqualified_hosts} },
295 { "slow_lookup_log", opt_int, {&slow_lookup_log} },
296 { "smtp_accept_keepalive", opt_bool, {&smtp_accept_keepalive} },
297 { "smtp_accept_max", opt_int, {&smtp_accept_max} },
298 { "smtp_accept_max_nonmail", opt_int, {&smtp_accept_max_nonmail} },
299 { "smtp_accept_max_nonmail_hosts", opt_stringptr, {&smtp_accept_max_nonmail_hosts} },
300 { "smtp_accept_max_per_connection", opt_int, {&smtp_accept_max_per_connection} },
301 { "smtp_accept_max_per_host", opt_stringptr, {&smtp_accept_max_per_host} },
302 { "smtp_accept_queue", opt_int, {&smtp_accept_queue} },
303 { "smtp_accept_queue_per_connection", opt_int, {&smtp_accept_queue_per_connection} },
304 { "smtp_accept_reserve", opt_int, {&smtp_accept_reserve} },
305 { "smtp_active_hostname", opt_stringptr, {&raw_active_hostname} },
306 { "smtp_banner", opt_stringptr, {&smtp_banner} },
307 { "smtp_check_spool_space", opt_bool, {&smtp_check_spool_space} },
308 { "smtp_connect_backlog", opt_int, {&smtp_connect_backlog} },
309 { "smtp_enforce_sync", opt_bool, {&smtp_enforce_sync} },
310 { "smtp_etrn_command", opt_stringptr, {&smtp_etrn_command} },
311 { "smtp_etrn_serialize", opt_bool, {&smtp_etrn_serialize} },
312 { "smtp_load_reserve", opt_fixed, {&smtp_load_reserve} },
313 { "smtp_max_synprot_errors", opt_int, {&smtp_max_synprot_errors} },
314 { "smtp_max_unknown_commands",opt_int, {&smtp_max_unknown_commands} },
315 { "smtp_ratelimit_hosts", opt_stringptr, {&smtp_ratelimit_hosts} },
316 { "smtp_ratelimit_mail", opt_stringptr, {&smtp_ratelimit_mail} },
317 { "smtp_ratelimit_rcpt", opt_stringptr, {&smtp_ratelimit_rcpt} },
318 { "smtp_receive_timeout", opt_func, {.fn = &fn_smtp_receive_timeout} },
319 { "smtp_reserve_hosts", opt_stringptr, {&smtp_reserve_hosts} },
320 { "smtp_return_error_details",opt_bool, {&smtp_return_error_details} },
322 { "smtputf8_advertise_hosts", opt_stringptr, {&smtputf8_advertise_hosts} },
324 #ifdef WITH_CONTENT_SCAN
325 { "spamd_address", opt_stringptr, {&spamd_address} },
328 { "spf_guess", opt_stringptr, {&spf_guess} },
329 { "spf_smtp_comment_template",opt_stringptr, {&spf_smtp_comment_template} },
331 { "split_spool_directory", opt_bool, {&split_spool_directory} },
332 { "spool_directory", opt_stringptr, {&spool_directory} },
333 { "spool_wireformat", opt_bool, {&spool_wireformat} },
335 { "sqlite_dbfile", opt_stringptr, {&sqlite_dbfile} },
336 { "sqlite_lock_timeout", opt_int, {&sqlite_lock_timeout} },
338 #ifdef EXPERIMENTAL_SRS
339 { "srs_config", opt_stringptr, {&srs_config} },
340 { "srs_hashlength", opt_int, {&srs_hashlength} },
341 { "srs_hashmin", opt_int, {&srs_hashmin} },
342 { "srs_maxage", opt_int, {&srs_maxage} },
343 { "srs_secrets", opt_stringptr, {&srs_secrets} },
344 { "srs_usehash", opt_bool, {&srs_usehash} },
345 { "srs_usetimestamp", opt_bool, {&srs_usetimestamp} },
347 { "strict_acl_vars", opt_bool, {&strict_acl_vars} },
348 { "strip_excess_angle_brackets", opt_bool, {&strip_excess_angle_brackets} },
349 { "strip_trailing_dot", opt_bool, {&strip_trailing_dot} },
350 { "syslog_duplication", opt_bool, {&syslog_duplication} },
351 { "syslog_facility", opt_stringptr, {&syslog_facility_str} },
352 { "syslog_pid", opt_bool, {&syslog_pid} },
353 { "syslog_processname", opt_stringptr, {&syslog_processname} },
354 { "syslog_timestamp", opt_bool, {&syslog_timestamp} },
355 { "system_filter", opt_stringptr, {&system_filter} },
356 { "system_filter_directory_transport", opt_stringptr,{&system_filter_directory_transport} },
357 { "system_filter_file_transport",opt_stringptr,{&system_filter_file_transport} },
358 { "system_filter_group", opt_gid, {&system_filter_gid} },
359 { "system_filter_pipe_transport",opt_stringptr,{&system_filter_pipe_transport} },
360 { "system_filter_reply_transport",opt_stringptr,{&system_filter_reply_transport} },
361 { "system_filter_user", opt_uid, {&system_filter_uid} },
362 { "tcp_nodelay", opt_bool, {&tcp_nodelay} },
363 #ifdef USE_TCP_WRAPPERS
364 { "tcp_wrappers_daemon_name", opt_stringptr, {&tcp_wrappers_daemon_name} },
366 { "timeout_frozen_after", opt_time, {&timeout_frozen_after} },
367 { "timezone", opt_stringptr, {&timezone_string} },
368 { "tls_advertise_hosts", opt_stringptr, {&tls_advertise_hosts} },
370 { "tls_certificate", opt_stringptr, {&tls_certificate} },
371 { "tls_crl", opt_stringptr, {&tls_crl} },
372 { "tls_dh_max_bits", opt_int, {&tls_dh_max_bits} },
373 { "tls_dhparam", opt_stringptr, {&tls_dhparam} },
374 { "tls_eccurve", opt_stringptr, {&tls_eccurve} },
375 # ifndef DISABLE_OCSP
376 { "tls_ocsp_file", opt_stringptr, {&tls_ocsp_file} },
378 { "tls_on_connect_ports", opt_stringptr, {&tls_in.on_connect_ports} },
379 { "tls_privatekey", opt_stringptr, {&tls_privatekey} },
380 { "tls_remember_esmtp", opt_bool, {&tls_remember_esmtp} },
381 { "tls_require_ciphers", opt_stringptr, {&tls_require_ciphers} },
382 # ifdef EXPERIMENTAL_TLS_RESUME
383 { "tls_resumption_hosts", opt_stringptr, {&tls_resumption_hosts} },
385 { "tls_try_verify_hosts", opt_stringptr, {&tls_try_verify_hosts} },
386 { "tls_verify_certificates", opt_stringptr, {&tls_verify_certificates} },
387 { "tls_verify_hosts", opt_stringptr, {&tls_verify_hosts} },
389 { "trusted_groups", opt_gidlist, {&trusted_groups} },
390 { "trusted_users", opt_uidlist, {&trusted_users} },
391 { "unknown_login", opt_stringptr, {&unknown_login} },
392 { "unknown_username", opt_stringptr, {&unknown_username} },
393 { "untrusted_set_sender", opt_stringptr, {&untrusted_set_sender} },
394 { "uucp_from_pattern", opt_stringptr, {&uucp_from_pattern} },
395 { "uucp_from_sender", opt_stringptr, {&uucp_from_sender} },
396 { "warn_message_file", opt_stringptr, {&warn_message_file} },
397 { "write_rejectlog", opt_bool, {&write_rejectlog} }
401 static int optionlist_config_size = nelem(optionlist_config);
408 fn_smtp_receive_timeout(const uschar * name, const uschar * str, unsigned flags) {/*Dummy*/}
413 options_from_list(optionlist_config, nelem(optionlist_config), US"MAIN", NULL);
419 uschar buf[EXIM_DRIVERNAME_MAX];
421 options_from_list(optionlist_auths, optionlist_auths_size, US"AUTHENTICATORS", NULL);
423 for (struct auth_info * ai = auths_available; ai->driver_name[0]; ai++)
425 spf(buf, sizeof(buf), US"_DRIVER_AUTHENTICATOR_%T", ai->driver_name);
426 builtin_macro_create(buf);
427 options_from_list(ai->options, (unsigned)*ai->options_count, US"AUTHENTICATOR", ai->driver_name);
429 if (ai->macros_create) (ai->macros_create)();
434 options_logging(void)
436 uschar buf[EXIM_DRIVERNAME_MAX];
438 for (bit_table * bp = log_options; bp < log_options + log_options_count; bp++)
440 spf(buf, sizeof(buf), US"_LOG_%T", bp->name);
441 builtin_macro_create(buf);
446 #else /*!MACRO_PREDEF*/
448 extern char **environ;
450 static void save_config_line(const uschar* line);
451 static void save_config_position(const uschar *file, int line);
452 static void print_config(BOOL admin, BOOL terse);
455 #define CSTATE_STACK_SIZE 10
457 const uschar *config_directory = NULL;
460 /* Structure for chain (stack) of .included files */
462 typedef struct config_file_item {
463 struct config_file_item *next;
464 const uschar *filename;
465 const uschar *directory;
470 /* Structure for chain of configuration lines (-bP config) */
472 typedef struct config_line_item {
473 struct config_line_item *next;
477 static config_line_item* config_lines;
479 /* Structure of table of conditional words and their state transitions */
481 typedef struct cond_item {
489 /* Structure of table of syslog facility names and values */
491 typedef struct syslog_fac_item {
497 static const uschar * const hidden = US"<value not displayable>";
499 /* Static variables */
501 static config_file_item *config_file_stack = NULL; /* For includes */
503 static uschar *syslog_facility_str = NULL;
504 static uschar next_section[24];
505 static uschar time_buffer[24];
507 /* State variables for conditional loading (.ifdef / .else / .endif) */
509 static int cstate = 0;
510 static int cstate_stack_ptr = -1;
511 static int cstate_stack[CSTATE_STACK_SIZE];
513 /* Table of state transitions for handling conditional inclusions. There are
514 four possible state transitions:
518 .elifdef true (or .else)
521 .endif just causes the previous cstate to be popped off the stack */
523 static int next_cstate[3][4] =
525 /* State 0: reading from file, or reading until next .else or .endif */
527 /* State 1: condition failed, skipping until next .else or .endif */
529 /* State 2: skipping until .endif */
533 /* Table of conditionals and the states to set. For each name, there are four
534 values: the length of the name (to save computing it each time), the state to
535 set if a macro was found in the line, the state to set if a macro was not found
536 in the line, and a stack manipulation setting which is:
538 -1 pull state value off the stack
539 0 don't alter the stack
540 +1 push value onto stack, before setting new state
543 static cond_item cond_list[] = {
544 { US"ifdef", 5, 0, 1, 1 },
545 { US"ifndef", 6, 1, 0, 1 },
546 { US"elifdef", 7, 2, 3, 0 },
547 { US"elifndef", 8, 3, 2, 0 },
548 { US"else", 4, 2, 2, 0 },
549 { US"endif", 5, 0, 0, -1 }
552 static int cond_list_size = sizeof(cond_list)/sizeof(cond_item);
554 /* Table of syslog facility names and their values */
556 static syslog_fac_item syslog_list[] = {
557 { US"mail", LOG_MAIL },
558 { US"user", LOG_USER },
559 { US"news", LOG_NEWS },
560 { US"uucp", LOG_UUCP },
561 { US"local0", LOG_LOCAL0 },
562 { US"local1", LOG_LOCAL1 },
563 { US"local2", LOG_LOCAL2 },
564 { US"local3", LOG_LOCAL3 },
565 { US"local4", LOG_LOCAL4 },
566 { US"local5", LOG_LOCAL5 },
567 { US"local6", LOG_LOCAL6 },
568 { US"local7", LOG_LOCAL7 },
569 { US"daemon", LOG_DAEMON }
572 static int syslog_list_size = sizeof(syslog_list)/sizeof(syslog_fac_item);
575 #define opt_fn_print BIT(0)
576 #define opt_fn_print_label BIT(1)
579 /*************************************************
580 * Find the name of an option *
581 *************************************************/
583 /* This function is to aid debugging. Various functions take arguments that are
584 pointer variables in the options table or in option tables for various drivers.
585 For debugging output, it is useful to be able to find the name of the option
586 which is currently being processed. This function finds it, if it exists, by
587 searching the table(s).
589 Arguments: a value that is presumed to be in the table above
590 Returns: the option name, or an empty string
594 readconf_find_option(void *p)
596 for (int i = 0; i < nelem(optionlist_config); i++)
597 if (p == optionlist_config[i].v.value) return US optionlist_config[i].name;
599 for (router_instance * r = routers; r; r = r->next)
601 router_info *ri = r->info;
602 for (int i = 0; i < *ri->options_count; i++)
604 if ((ri->options[i].type & opt_mask) != opt_stringptr) continue;
605 if (p == CS (r->options_block) + ri->options[i].v.offset)
606 return US ri->options[i].name;
610 for (transport_instance * t = transports; t; t = t->next)
612 transport_info *ti = t->info;
613 for (int i = 0; i < *ti->options_count; i++)
615 optionlist * op = &ti->options[i];
616 if ((op->type & opt_mask) != opt_stringptr) continue;
617 if (p == ( op->type & opt_public
619 : CS t->options_block
632 /*************************************************
633 * Deal with an assignment to a macro *
634 *************************************************/
636 /* We have a new definition; append to the list.
639 name Name of the macro; will be copied
640 val Expansion result for the macro; will be copied
644 macro_create(const uschar * name, const uschar * val, BOOL command_line)
646 macro_item * m = store_get(sizeof(macro_item), FALSE);
648 READCONF_DEBUG fprintf(stderr, "%s: '%s' '%s'\n", __FUNCTION__, name, val);
650 m->command_line = command_line;
651 m->namelen = Ustrlen(name);
652 m->replen = Ustrlen(val);
653 m->name = string_copy(name);
654 m->replacement = string_copy(val);
666 /* This function is called when a line that starts with an upper case letter is
667 encountered. The argument "line" should contain a complete logical line, and
668 start with the first letter of the macro name. The macro name and the
669 replacement text are extracted and stored. Redefinition of existing,
670 non-command line, macros is permitted using '==' instead of '='.
673 s points to the start of the logical line
675 Returns: FALSE iff fatal error
679 macro_read_assignment(uschar *s)
681 uschar name[EXIM_DRIVERNAME_MAX];
686 while (isalnum(*s) || *s == '_')
688 if (namelen >= sizeof(name) - 1)
690 log_write(0, LOG_PANIC|LOG_CONFIG_IN,
691 "macro name too long (maximum is " SIZE_T_FMT " characters)", sizeof(name) - 1);
694 name[namelen++] = *s++;
698 Uskip_whitespace(&s);
701 log_write(0, LOG_PANIC|LOG_CONFIG_IN, "malformed macro definition");
710 Uskip_whitespace(&s);
712 /* If an existing macro of the same name was defined on the command line, we
713 just skip this definition. It's an error to attempt to redefine a macro without
714 redef set to TRUE, or to redefine a macro when it hasn't been defined earlier.
715 It is also an error to define a macro whose name begins with the name of a
716 previously defined macro. This is the requirement that make using a tree
717 for macros hard; we must check all macros for the substring. Perhaps a
718 sorted list, and a bsearch, would work?
719 Note: it is documented that the other way round works. */
721 for (m = macros; m; m = m->next)
723 if (Ustrcmp(m->name, name) == 0)
725 if (!m->command_line && !redef)
727 log_write(0, LOG_CONFIG|LOG_PANIC, "macro \"%s\" is already "
728 "defined (use \"==\" if you want to redefine it)", name);
734 if (m->namelen < namelen && Ustrstr(name, m->name) != NULL)
736 log_write(0, LOG_CONFIG|LOG_PANIC, "\"%s\" cannot be defined as "
737 "a macro because previously defined macro \"%s\" is a substring",
742 /* We cannot have this test, because it is documented that a substring
743 macro is permitted (there is even an example).
745 * if (m->namelen > namelen && Ustrstr(m->name, name) != NULL)
746 * log_write(0, LOG_CONFIG|LOG_PANIC_DIE, "\"%s\" cannot be defined as "
747 * "a macro because it is a substring of previously defined macro \"%s\"",
752 /* Check for an overriding command-line definition. */
754 if (m && m->command_line) return TRUE;
756 /* Redefinition must refer to an existing macro. */
761 m->replen = Ustrlen(s);
762 m->replacement = string_copy(s);
766 log_write(0, LOG_CONFIG|LOG_PANIC, "can't redefine an undefined macro "
771 /* We have a new definition. */
773 (void) macro_create(name, s, FALSE);
781 /* Process line for macros. The line is in big_buffer starting at offset len.
782 Expand big_buffer if needed. Handle definitions of new macros, and
783 macro expansions, rewriting the line in the buffer.
786 len Offset in buffer of start of line
787 newlen Pointer to offset of end of line, updated on return
788 macro_found Pointer to return that a macro was expanded
790 Return: pointer to first nonblank char in line
794 macros_expand(int len, int * newlen, BOOL * macro_found)
796 uschar * ss = big_buffer + len;
799 /* Find the true start of the physical line - leading spaces are always
802 Uskip_whitespace(&ss);
804 /* Process the physical line for macros. If this is the start of the logical
805 line, skip over initial text at the start of the line if it starts with an
806 upper case character followed by a sequence of name characters and an equals
807 sign, because that is the definition of a new macro, and we don't do
808 replacement therein. */
811 if (len == 0 && isupper(*s))
813 while (isalnum(*s) || *s == '_') s++;
814 if (Uskip_whitespace(&s) != '=') s = ss; /* Not a macro definition */
817 /* Skip leading chars which cannot start a macro name, to avoid multiple
818 pointless rescans in Ustrstr calls. */
820 while (*s && !isupper(*s) && !(*s == '_' && isupper(s[1]))) s++;
822 /* For each defined macro, scan the line (from after XXX= if present),
823 replacing all occurrences of the macro. */
825 *macro_found = FALSE;
826 if (*s) for (macro_item * m = *s == '_' ? macros : macros_user; m; m = m->next)
831 while (*s && !isupper(*s) && !(*s == '_' && isupper(s[1]))) s++;
835 while ((p = Ustrstr(t, m->name)) != NULL)
839 READCONF_DEBUG fprintf(stderr, "%s: matched '%s' in '%.*s'\n", __FUNCTION__,
840 m->name, (int) Ustrlen(ss)-1, ss);
841 /* Expand the buffer if necessary */
843 while (*newlen - m->namelen + m->replen + 1 > big_buffer_size)
845 int newsize = big_buffer_size + BIG_BUFFER_SIZE;
846 uschar *newbuffer = store_malloc(newsize);
847 memcpy(newbuffer, big_buffer, *newlen + 1);
848 p = newbuffer + (p - big_buffer);
849 s = newbuffer + (s - big_buffer);
850 ss = newbuffer + (ss - big_buffer);
851 t = newbuffer + (t - big_buffer);
852 big_buffer_size = newsize;
853 store_free(big_buffer);
854 big_buffer = newbuffer;
857 /* Shuffle the remaining characters up or down in the buffer before
858 copying in the replacement text. Don't rescan the replacement for this
862 if ((moveby = m->replen - m->namelen) != 0)
864 memmove(p + m->replen, pp, (big_buffer + *newlen) - pp + 1);
867 Ustrncpy(p, m->replacement, m->replen);
869 while (*t && !isupper(*t) && !(*t == '_' && isupper(t[1]))) t++;
874 /* An empty macro replacement at the start of a line could mean that ss no
875 longer points to the first non-blank character. */
877 Uskip_whitespace(&ss);
881 /*************************************************
882 * Read configuration line *
883 *************************************************/
885 /* A logical line of text is read from the configuration file into the big
886 buffer, taking account of macros, .includes, and continuations. The size of
887 big_buffer is increased if necessary. The count of configuration lines is
888 maintained. Physical input lines starting with # (ignoring leading white space,
889 and after macro replacement) and empty logical lines are always ignored.
890 Leading and trailing spaces are removed.
892 If we hit a line of the form "begin xxxx", the xxxx is placed in the
893 next_section vector, and the function returns NULL, indicating the end of a
894 configuration section. On end-of-file, NULL is returned with next_section
899 Returns: a pointer to the first non-blank in the line,
900 or NULL if eof or end of section is reached
904 get_config_line(void)
906 int startoffset = 0; /* To first non-blank char in logical line */
907 int len = 0; /* Of logical line so far */
912 /* Loop for handling continuation lines, skipping comments, and dealing with
917 if (Ufgets(big_buffer+len, big_buffer_size-len, config_file) == NULL)
919 if (config_file_stack != NULL) /* EOF inside .include */
921 (void)fclose(config_file);
922 config_file = config_file_stack->file;
923 config_filename = config_file_stack->filename;
924 config_directory = config_file_stack->directory;
925 config_lineno = config_file_stack->lineno;
926 config_file_stack = config_file_stack->next;
928 save_config_position(config_filename, config_lineno);
932 /* EOF at top level */
934 if (cstate_stack_ptr >= 0)
935 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
936 "Unexpected end of configuration file: .endif missing");
938 if (len != 0) break; /* EOF after continuation */
939 next_section[0] = 0; /* EOF at start of logical line */
944 newlen = len + Ustrlen(big_buffer + len);
946 if (config_lines && config_lineno == 1)
947 save_config_position(config_filename, config_lineno);
949 /* Handle pathologically long physical lines - yes, it did happen - by
950 extending big_buffer at this point. The code also copes with very long
953 while (newlen == big_buffer_size - 1 && big_buffer[newlen - 1] != '\n')
956 big_buffer_size += BIG_BUFFER_SIZE;
957 newbuffer = store_malloc(big_buffer_size);
959 /* This use of strcpy is OK because we know that the string in the old
960 buffer is shorter than the new buffer. */
962 Ustrcpy(newbuffer, big_buffer);
963 store_free(big_buffer);
964 big_buffer = newbuffer;
965 if (Ufgets(big_buffer+newlen, big_buffer_size-newlen, config_file) == NULL)
967 newlen += Ustrlen(big_buffer + newlen);
970 ss = macros_expand(len, &newlen, ¯o_found);
972 /* Check for comment lines - these are physical lines. */
974 if (*ss == '#') continue;
976 /* Handle conditionals, which are also applied to physical lines. Conditions
977 are of the form ".ifdef ANYTEXT" and are treated as true if any macro
978 expansion occurred on the rest of the line. A preliminary test for the leading
979 '.' saves effort on most lines. */
985 /* Search the list of conditional directives */
987 for (i = 0; i < cond_list_size; i++)
990 cond_item *c = cond_list+i;
991 if (Ustrncmp(ss+1, c->name, c->namelen) != 0) continue;
993 /* The following character must be white space or end of string */
995 n = ss[1 + c->namelen];
996 if (n != ' ' && n != 't' && n != '\n' && n != 0) break;
998 /* .ifdef and .ifndef push the current state onto the stack, then set
999 a new one from the table. Stack overflow is an error */
1003 if (cstate_stack_ptr >= CSTATE_STACK_SIZE - 1)
1004 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1005 ".%s nested too deeply", c->name);
1006 cstate_stack[++cstate_stack_ptr] = cstate;
1007 cstate = next_cstate[cstate][macro_found? c->action1 : c->action2];
1010 /* For any of the others, stack underflow is an error. The next state
1011 comes either from the stack (.endif) or from the table. */
1015 if (cstate_stack_ptr < 0)
1016 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1017 ".%s without matching .ifdef", c->name);
1018 cstate = (c->pushpop < 0)? cstate_stack[cstate_stack_ptr--] :
1019 next_cstate[cstate][macro_found? c->action1 : c->action2];
1022 /* Having dealt with a directive, break the loop */
1027 /* If we have handled a conditional directive, continue with the next
1028 physical line. Otherwise, fall through. */
1030 if (i < cond_list_size) continue;
1033 /* If the conditional state is not 0 (actively using these lines), ignore
1036 if (cstate != 0) continue; /* Conditional skip */
1038 /* Handle .include lines - these are also physical lines. */
1040 if (Ustrncmp(ss, ".include", 8) == 0 &&
1042 (Ustrncmp(ss+8, "_if_exists", 10) == 0 && isspace(ss[18]))))
1045 int include_if_exists = isspace(ss[8])? 0 : 10;
1046 config_file_item *save;
1047 struct stat statbuf;
1049 ss += 9 + include_if_exists;
1050 Uskip_whitespace(&ss);
1051 t = ss + Ustrlen(ss);
1052 while (t > ss && isspace(t[-1])) t--;
1053 if (*ss == '\"' && t[-1] == '\"')
1060 /* We allow relative file names. For security reasons currently
1061 relative names not allowed with .include_if_exists. For .include_if_exists
1062 we need to check the permissions/ownership of the containing folder */
1064 if (include_if_exists) log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, ".include specifies a non-"
1065 "absolute path \"%s\"", ss);
1068 gstring * g = string_append(NULL, 3, config_directory, "/", ss);
1069 ss = string_from_gstring(g);
1072 if (include_if_exists != 0 && (Ustat(ss, &statbuf) != 0)) continue;
1075 save_config_position(config_filename, config_lineno);
1076 save = store_get(sizeof(config_file_item), FALSE);
1077 save->next = config_file_stack;
1078 config_file_stack = save;
1079 save->file = config_file;
1080 save->filename = config_filename;
1081 save->directory = config_directory;
1082 save->lineno = config_lineno;
1084 if (!(config_file = Ufopen(ss, "rb")))
1085 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "failed to open included "
1086 "configuration file %s", ss);
1088 config_filename = string_copy(ss);
1089 config_directory = string_copyn(ss, CUstrrchr(ss, '/') - ss);
1094 /* If this is the start of the logical line, remember where the non-blank
1095 data starts. Otherwise shuffle down continuation lines to remove leading
1099 startoffset = ss - big_buffer;
1102 s = big_buffer + len;
1105 memmove(s, ss, (newlen - len) - (ss - s) + 1);
1110 /* Accept the new addition to the line. Remove trailing white space. */
1113 while (len > 0 && isspace(big_buffer[len-1])) len--;
1114 big_buffer[len] = 0;
1116 /* We are done if the line does not end in backslash and contains some data.
1117 Empty logical lines are ignored. For continuations, remove the backslash and
1118 go round the loop to read the continuation line. */
1122 if (big_buffer[len-1] != '\\') break; /* End of logical line */
1123 big_buffer[--len] = 0; /* Remove backslash */
1125 } /* Loop for reading multiple physical lines */
1127 /* We now have a logical line. Test for the end of a configuration section (or,
1128 more accurately, for the start of the next section). Place the name of the next
1129 section in next_section, and return NULL. If the name given is longer than
1130 next_section, truncate it. It will be unrecognized later, because all the known
1131 section names do fit. Leave space for pluralizing. */
1133 s = big_buffer + startoffset; /* First non-space character */
1136 save_config_line(s);
1138 if (strncmpic(s, US"begin ", 6) == 0)
1141 Uskip_whitespace(&s);
1142 if (big_buffer + len - s > sizeof(next_section) - 2)
1143 s[sizeof(next_section) - 2] = 0;
1144 Ustrcpy(next_section, s);
1148 /* Return the first non-blank character. */
1155 /*************************************************
1157 *************************************************/
1159 /* The yield is the pointer to the next uschar. Names longer than the
1160 output space are silently truncated. This function is also used from acl.c when
1164 name where to put the name
1168 Returns: new input pointer
1172 readconf_readname(uschar *name, int len, uschar *s)
1175 BOOL broken = FALSE;
1177 if (isalpha(Uskip_whitespace(&s)))
1178 while (isalnum(*s) || *s == '_')
1180 if (p < len-1) name[p++] = *s;
1190 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1191 "exim item name too long (>%d), unable to use \"%s\" (truncated)",
1194 Uskip_whitespace(&s);
1201 /*************************************************
1202 * Read a time value *
1203 *************************************************/
1205 /* This function is also called from outside, to read argument
1206 time values. The format of a time value is:
1208 [<n>w][<n>d][<n>h][<n>m][<n>s]
1210 as long as at least one is present. If a format error is encountered,
1211 return a negative value. The value must be terminated by the given
1216 terminator required terminating character
1217 return_msec if TRUE, allow fractional seconds and return milliseconds
1219 Returns: the time value, or -1 on syntax error
1220 value is seconds if return_msec is FALSE
1221 value is milliseconds if return_msec is TRUE
1225 readconf_readtime(const uschar *s, int terminator, BOOL return_msec)
1233 if (!isdigit(*s)) return -1;
1234 (void)sscanf(CCS s, "%d%n", &value, &count);
1239 case 'w': value *= 7;
1240 case 'd': value *= 24;
1241 case 'h': value *= 60;
1242 case 'm': value *= 60;
1247 if (!return_msec) return -1;
1248 (void)sscanf(CCS s, "%lf%n", &fraction, &count);
1250 if (*s++ != 's') return -1;
1251 yield += (int)(fraction * 1000.0);
1257 if (return_msec) value *= 1000;
1259 if (*s == terminator) return yield;
1261 /* Control never reaches here. */
1266 /*************************************************
1267 * Read a fixed point value *
1268 *************************************************/
1270 /* The value is returned *1000
1274 terminator required terminator
1276 Returns: the value, or -1 on error
1280 readconf_readfixed(const uschar *s, int terminator)
1284 if (!isdigit(*s)) return -1;
1285 (void)sscanf(CS s, "%d%n", &value, &count);
1287 yield = value * 1000;
1291 while (isdigit((*(++s))))
1293 yield += (*s - '0') * m;
1298 return (*s == terminator)? yield : (-1);
1303 /*************************************************
1304 * Find option in list *
1305 *************************************************/
1307 /* The lists are always in order, so binary chop can be used.
1310 name the option name to search for
1311 ol the first entry in the option list
1312 last one more than the offset of the last entry in the option list
1314 Returns: pointer to an option entry, or NULL if not found
1318 find_option(const uschar *name, optionlist *ol, int last)
1321 while (last > first)
1323 int middle = (first + last)/2;
1324 int c = Ustrcmp(name, ol[middle].name);
1326 if (c == 0) return ol + middle;
1327 else if (c > 0) first = middle + 1;
1335 /*************************************************
1336 * Find a set flag in option list *
1337 *************************************************/
1339 /* Because some versions of Unix make no restrictions on the values of uids and
1340 gids (even negative ones), we cannot represent "unset" by a special value.
1341 There is therefore a separate boolean variable for each one indicating whether
1342 a value is set or not. This function returns a pointer to the boolean, given
1343 the original option name. It is a major disaster if the flag cannot be found.
1346 name the name of the uid or gid option
1347 oltop points to the start of the relevant option list
1348 last one more than the offset of the last item in the option list
1349 data_block NULL when reading main options => data values in the option
1350 list are absolute addresses; otherwise they are byte offsets
1351 in data_block (used for driver options)
1353 Returns: a pointer to the boolean flag.
1357 get_set_flag(const uschar *name, optionlist *oltop, int last, void *data_block)
1360 uschar name2[EXIM_DRIVERNAME_MAX];
1361 sprintf(CS name2, "*set_%.50s", name);
1362 if (!(ol = find_option(name2, oltop, last)))
1363 log_write(0, LOG_MAIN|LOG_PANIC_DIE,
1364 "Exim internal error: missing set flag for %s", name);
1366 ? (BOOL *)(US data_block + ol->v.offset) : (BOOL *)ol->v.value;
1372 /*************************************************
1373 * Output extra characters message and die *
1374 *************************************************/
1376 /* Called when an option line has junk on the end. Sometimes this is because
1377 the sysadmin thinks comments are permitted.
1380 s points to the extra characters
1381 t1..t3 strings to insert in the log message
1383 Returns: doesn't return; dies
1387 extra_chars_error(const uschar *s, const uschar *t1, const uschar *t2, const uschar *t3)
1389 uschar *comment = US"";
1390 if (*s == '#') comment = US" (# is comment only at line start)";
1391 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1392 "extra characters follow %s%s%s%s", t1, t2, t3, comment);
1397 /*************************************************
1398 * Read rewrite information *
1399 *************************************************/
1401 /* Each line of rewrite information contains:
1403 . A complete address in the form user@domain, possibly with
1404 leading * for each part; or alternatively, a regex.
1406 . A replacement string (which will be expanded).
1408 . An optional sequence of one-letter flags, indicating which
1409 headers etc. to apply this rule to.
1411 All this is decoded and placed into a control block. The OR of the flags is
1412 maintained in a common word.
1415 p points to the string that makes up the rule
1416 existflags points to the overall flag word
1417 isglobal TRUE if reading global rewrite rules
1419 Returns: the control block for the parsed rule.
1422 static rewrite_rule *
1423 readconf_one_rewrite(const uschar *p, int *existflags, BOOL isglobal)
1425 rewrite_rule *next = store_get(sizeof(rewrite_rule), FALSE);
1428 next->key = string_dequote(&p);
1430 Uskip_whitespace(&p);
1432 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1433 "missing rewrite replacement string");
1436 next->replacement = string_dequote(&p);
1438 while (*p) switch (*p++)
1440 case ' ': case '\t': break;
1442 case 'q': next->flags |= rewrite_quit; break;
1443 case 'w': next->flags |= rewrite_whole; break;
1445 case 'h': next->flags |= rewrite_all_headers; break;
1446 case 's': next->flags |= rewrite_sender; break;
1447 case 'f': next->flags |= rewrite_from; break;
1448 case 't': next->flags |= rewrite_to; break;
1449 case 'c': next->flags |= rewrite_cc; break;
1450 case 'b': next->flags |= rewrite_bcc; break;
1451 case 'r': next->flags |= rewrite_replyto; break;
1453 case 'E': next->flags |= rewrite_all_envelope; break;
1454 case 'F': next->flags |= rewrite_envfrom; break;
1455 case 'T': next->flags |= rewrite_envto; break;
1457 case 'Q': next->flags |= rewrite_qualify; break;
1458 case 'R': next->flags |= rewrite_repeat; break;
1461 next->flags |= rewrite_smtp;
1462 if (next->key[0] != '^' && Ustrncmp(next->key, "\\N^", 3) != 0)
1463 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1464 "rewrite rule has the S flag but is not a regular expression");
1468 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1469 "unknown rewrite flag character '%c' "
1470 "(could be missing quotes round replacement item)", p[-1]);
1474 /* If no action flags are set, set all the "normal" rewrites. */
1476 if ((next->flags & (rewrite_all | rewrite_smtp)) == 0)
1477 next->flags |= isglobal? rewrite_all : rewrite_all_headers;
1479 /* Remember which exist, for optimization, and return the rule */
1481 *existflags |= next->flags;
1488 /*************************************************
1489 * Read global rewrite information *
1490 *************************************************/
1492 /* Each line is a single rewrite rule; it is parsed into a control block
1493 by readconf_one_rewrite(), and its flags are ORed into the global flag
1494 word rewrite_existflags. */
1497 readconf_rewrites(void)
1499 rewrite_rule **chain = &global_rewrite_rules;
1502 while ((p = get_config_line()) != NULL)
1504 rewrite_rule *next = readconf_one_rewrite(p, &rewrite_existflags, TRUE);
1506 chain = &(next->next);
1512 /*************************************************
1514 *************************************************/
1516 /* Strings are read into the normal store pool. As long we aren't too
1517 near the end of the current block, the string will just use what is necessary
1518 on the top of the stacking pool, because string_cat() uses the extension
1522 s the rest of the input line
1523 name the option name (for errors)
1525 Returns: pointer to the string
1529 read_string(const uschar *s, const uschar *name)
1534 if (*s != '\"') return string_copy(s);
1537 yield = string_dequote(&s);
1539 if (s == ss+1 || s[-1] != '\"')
1540 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1541 "missing quote at end of string value for %s", name);
1543 if (*s != 0) extra_chars_error(s, US"string value for ", name, US"");
1549 /*************************************************
1550 * Custom-handler options *
1551 *************************************************/
1553 fn_smtp_receive_timeout(const uschar * name, const uschar * str, unsigned flags)
1555 if (flags & opt_fn_print)
1557 if (flags & opt_fn_print_label) printf("%s = ", name);
1558 printf("%s\n", smtp_receive_timeout_s
1559 ? string_printing2(smtp_receive_timeout_s, SP_TAB)
1560 : readconf_printtime(smtp_receive_timeout));
1562 else if (*str == '$')
1563 smtp_receive_timeout_s = string_copy(str);
1566 /* "smtp_receive_timeout", opt_time, &smtp_receive_timeout */
1567 smtp_receive_timeout = readconf_readtime(str, 0, FALSE);
1568 if (smtp_receive_timeout < 0)
1569 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "invalid time value for %s",
1574 /*************************************************
1575 * Handle option line *
1576 *************************************************/
1578 /* This function is called from several places to process a line containing the
1579 setting of an option. The first argument is the line to be decoded; it has been
1580 checked not to be empty and not to start with '#'. Trailing newlines and white
1581 space have been removed. The second argument is a pointer to the list of
1582 variable names that are to be recognized, together with their types and
1583 locations, and the third argument gives the number of entries in the list.
1585 The fourth argument is a pointer to a data block. If it is NULL, then the data
1586 values in the options list are absolute addresses. Otherwise, they are byte
1587 offsets in the data block.
1589 String option data may continue onto several lines; this function reads further
1590 data from config_file if necessary.
1592 The yield of this function is normally zero. If a string continues onto
1593 multiple lines, then the data value is permitted to be followed by a comma
1594 or a semicolon (for use in drivers) and the yield is that character.
1597 buffer contains the configuration line to be handled
1598 oltop points to the start of the relevant option list
1599 last one more than the offset of the last item in the option list
1600 data_block NULL when reading main options => data values in the option
1601 list are absolute addresses; otherwise they are byte offsets
1602 in data_block when they have opt_public set; otherwise
1603 they are byte offsets in data_block->options_block.
1604 unknown_txt format string to use in panic message for unknown option;
1605 must contain %s for option name
1606 if given as NULL, don't panic on unknown option
1608 Returns: TRUE if an option was read successfully,
1609 FALSE false for an unknown option if unknown_txt == NULL,
1610 otherwise panic and die on an unknown option
1614 readconf_handle_option(uschar *buffer, optionlist *oltop, int last,
1615 void *data_block, uschar *unknown_txt)
1619 int count, type, value;
1623 BOOL boolvalue = TRUE;
1624 BOOL freesptr = TRUE;
1625 optionlist *ol, *ol2;
1629 uschar *inttype = US"";
1632 uschar **str_target;
1633 uschar name[EXIM_DRIVERNAME_MAX];
1634 uschar name2[EXIM_DRIVERNAME_MAX];
1636 /* There may be leading spaces; thereafter, we expect an option name starting
1639 while (isspace(*s)) s++;
1641 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "option setting expected: %s", s);
1643 /* Read the name of the option, and skip any subsequent white space. If
1644 it turns out that what we read was "hide", set the flag indicating that
1645 this is a secure option, and loop to read the next word. */
1647 for (int n = 0; n < 2; n++)
1649 while (isalnum(*s) || *s == '_')
1651 if (ptr < sizeof(name)-1) name[ptr++] = *s;
1655 while (isspace(*s)) s++;
1656 if (Ustrcmp(name, "hide") != 0) break;
1657 issecure = opt_secure;
1661 /* Deal with "no_" or "not_" here for booleans */
1663 if (Ustrncmp(name, "no_", 3) == 0)
1669 if (Ustrncmp(name, "not_", 4) == 0)
1675 /* Search the list for the given name. A non-existent name, or an option that
1676 is set twice, is a disaster. */
1678 if (!(ol = find_option(name + offset, oltop, last)))
1680 if (!unknown_txt) return FALSE;
1681 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, CS unknown_txt, name);
1684 if ((ol->type & opt_set) && !(ol->type & (opt_rep_con | opt_rep_str)))
1685 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1686 "\"%s\" option set for the second time", name);
1688 ol->type |= opt_set | issecure;
1689 type = ol->type & opt_mask;
1691 /* Types with data values must be followed by '='; the "no[t]_" prefix
1692 applies only to boolean values. */
1694 if (type < opt_bool || type > opt_bool_last)
1697 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1698 "negation prefix applied to a non-boolean option");
1700 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1701 "unexpected end of line (data missing) after %s", name);
1703 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "missing \"=\" after %s", name);
1706 /* If a boolean wasn't preceded by "no[t]_" it can be followed by = and
1707 true/false/yes/no, or, in the case of opt_expand_bool, a general string that
1708 ultimately expands to one of those values. */
1710 else if (*s && (offset != 0 || *s != '='))
1711 extra_chars_error(s, US"boolean option ", name, US"");
1713 /* Skip white space after = */
1715 if (*s == '=') while (isspace((*(++s))));
1717 /* If there is a data block and the opt_public flag is not set, change
1718 the data block pointer to the private options block. */
1720 if (data_block && !(ol->type & opt_public))
1721 data_block = (void *)(((driver_instance *)data_block)->options_block);
1723 /* Now get the data according to the type. */
1727 /* If a string value is not enclosed in quotes, it consists of
1728 the rest of the current line, verbatim. Otherwise, string escapes
1731 A transport is specified as a string, which is then looked up in the
1732 list of transports. A search type is specified as one of a number of
1735 A set or rewrite rules for a driver is specified as a string, which is
1736 then parsed into a suitable chain of control blocks.
1738 Uids and gids are specified as strings which are then looked up in the
1739 passwd file. Lists of uids and gids are similarly specified as colon-
1740 separated strings. */
1745 case opt_expand_uid:
1746 case opt_expand_gid:
1751 reset_point = store_mark();
1752 sptr = read_string(s, name);
1754 /* Having read a string, we now have several different ways of using it,
1755 depending on the data type, so do another switch. If keeping the actual
1756 string is not required (because it is interpreted), freesptr is set TRUE,
1757 and at the end we reset the pool. */
1761 /* If this was a string, set the variable to point to the new string,
1762 and set the flag so its store isn't reclaimed. If it was a list of rewrite
1763 rules, we still keep the string (for printing), and parse the rules into a
1764 control block and flags word. */
1767 str_target = data_block ? USS (US data_block + ol->v.offset)
1769 if (ol->type & opt_rep_con)
1771 uschar * saved_condition;
1772 /* We already have a condition, we're conducting a crude hack to let
1773 multiple condition rules be chained together, despite storing them in
1775 *str_target = string_copy_perm( (saved_condition = *str_target)
1776 ? string_sprintf("${if and{{bool_lax{%s}}{bool_lax{%s}}}}",
1777 saved_condition, sptr)
1780 /* TODO(pdp): there is a memory leak here and just below
1781 when we set 3 or more conditions; I still don't
1782 understand the store mechanism enough to know
1783 what's the safe way to free content from an earlier store.
1784 AFAICT, stores stack, so freeing an early stored item also stores
1785 all data alloc'd after it. If we knew conditions were adjacent,
1786 we could survive that, but we don't. So I *think* we need to take
1787 another bit from opt_type to indicate "malloced"; this seems like
1788 quite a hack, especially for this one case. It also means that
1789 we can't ever reclaim the store from the *first* condition.
1791 Because we only do this once, near process start-up, I'm prepared to
1792 let this slide for the time being, even though it rankles. */
1794 else if (ol->type & opt_rep_str)
1797 Ustrncmp(name, "headers_add", 11) == 0 ? '\n'
1798 : Ustrncmp(name, "set", 3) == 0 ? ';'
1800 int sep_i = -(int)sep_o;
1801 const uschar * list = sptr;
1803 gstring * list_o = NULL;
1807 list_o = string_get(Ustrlen(*str_target) + Ustrlen(sptr));
1808 list_o = string_cat(list_o, *str_target);
1811 while ((s = string_nextinlist(&list, &sep_i, NULL, 0)))
1812 list_o = string_append_listele(list_o, sep_o, s);
1815 *str_target = string_copy_perm(string_from_gstring(list_o), FALSE);
1826 *USS (US data_block + ol->v.offset) = sptr;
1828 *USS ol->v.value = sptr;
1830 if (type == opt_rewrite)
1835 rewrite_rule **chain;
1838 sprintf(CS name2, "*%.50s_rules", name);
1839 ol2 = find_option(name2, oltop, last);
1840 sprintf(CS name2, "*%.50s_flags", name);
1841 ol3 = find_option(name2, oltop, last);
1844 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1845 "rewrite rules not available for driver");
1849 chain = (rewrite_rule **)(US data_block + ol2->v.offset);
1850 flagptr = (int *)(US data_block + ol3->v.offset);
1854 chain = (rewrite_rule **)ol2->v.value;
1855 flagptr = (int *)ol3->v.value;
1858 while ((p = string_nextinlist(CUSS &sptr, &sep, big_buffer, BIG_BUFFER_SIZE)))
1860 rewrite_rule *next = readconf_one_rewrite(p, flagptr, FALSE);
1862 chain = &(next->next);
1865 if ((*flagptr & (rewrite_all_envelope | rewrite_smtp)) != 0)
1866 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "rewrite rule specifies a "
1867 "non-header rewrite - not allowed at transport time -");
1871 /* If it was an expanded uid, see if there is any expansion to be
1872 done by checking for the presence of a $ character. If there is, save it
1873 in the corresponding *expand_user option field. Otherwise, fall through
1874 to treat it as a fixed uid. Ensure mutual exclusivity of the two kinds
1877 case opt_expand_uid:
1878 sprintf(CS name2, "*expand_%.50s", name);
1879 if ((ol2 = find_option(name2, oltop, last)))
1881 uschar *ss = (Ustrchr(sptr, '$') != NULL) ? sptr : NULL;
1884 *(USS(US data_block + ol2->v.offset)) = ss;
1886 *(USS ol2->v.value) = ss;
1890 *(get_set_flag(name, oltop, last, data_block)) = FALSE;
1896 /* Look up a fixed uid, and also make use of the corresponding gid
1897 if a passwd entry is returned and the gid has not been set. */
1900 if (!route_finduser(sptr, &pw, &uid))
1901 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "user %s was not found", sptr);
1903 *(uid_t *)(US data_block + ol->v.offset) = uid;
1905 *(uid_t *)ol->v.value = uid;
1907 /* Set the flag indicating a fixed value is set */
1909 *(get_set_flag(name, oltop, last, data_block)) = TRUE;
1911 /* Handle matching gid if we have a passwd entry: done by finding the
1912 same name with terminating "user" changed to "group"; if not found,
1913 ignore. Also ignore if the value is already set. */
1915 if (pw == NULL) break;
1916 Ustrcpy(name+Ustrlen(name)-4, US"group");
1917 ol2 = find_option(name, oltop, last);
1918 if (ol2 && ((ol2->type & opt_mask) == opt_gid ||
1919 (ol2->type & opt_mask) == opt_expand_gid))
1921 BOOL *set_flag = get_set_flag(name, oltop, last, data_block);
1925 *((gid_t *)(US data_block + ol2->v.offset)) = pw->pw_gid;
1927 *((gid_t *)ol2->v.value) = pw->pw_gid;
1933 /* If it was an expanded gid, see if there is any expansion to be
1934 done by checking for the presence of a $ character. If there is, save it
1935 in the corresponding *expand_user option field. Otherwise, fall through
1936 to treat it as a fixed gid. Ensure mutual exclusivity of the two kinds
1939 case opt_expand_gid:
1940 sprintf(CS name2, "*expand_%.50s", name);
1941 if ((ol2 = find_option(name2, oltop, last)))
1943 uschar *ss = (Ustrchr(sptr, '$') != NULL) ? sptr : NULL;
1946 *(USS(US data_block + ol2->v.offset)) = ss;
1948 *(USS ol2->v.value) = ss;
1952 *(get_set_flag(name, oltop, last, data_block)) = FALSE;
1958 /* Handle freestanding gid */
1961 if (!route_findgroup(sptr, &gid))
1962 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "group %s was not found", sptr);
1964 *((gid_t *)(US data_block + ol->v.offset)) = gid;
1966 *((gid_t *)ol->v.value) = gid;
1967 *(get_set_flag(name, oltop, last, data_block)) = TRUE;
1970 /* If it was a uid list, look up each individual entry, and build
1971 a vector of uids, with a count in the first element. Put the vector
1972 in malloc store so we can free the string. (We are reading into
1973 permanent store already.) */
1981 const uschar *op = expand_string (sptr);
1984 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "failed to expand %s: %s",
1985 name, expand_string_message);
1988 if (*p != 0) count++;
1989 while (*p != 0) if (*p++ == ':' && *p != 0) count++;
1990 list = store_malloc(count*sizeof(uid_t));
1991 list[ptr++] = (uid_t)(count - 1);
1994 *((uid_t **)(US data_block + ol->v.offset)) = list;
1996 *((uid_t **)ol->v.value) = list;
2002 (void)string_nextinlist(&p, &sep, big_buffer, BIG_BUFFER_SIZE);
2003 if (!route_finduser(big_buffer, NULL, &uid))
2004 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "user %s was not found",
2011 /* If it was a gid list, look up each individual entry, and build
2012 a vector of gids, with a count in the first element. Put the vector
2013 in malloc store so we can free the string. (We are reading into permanent
2022 const uschar *op = expand_string (sptr);
2025 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "failed to expand %s: %s",
2026 name, expand_string_message);
2029 if (*p != 0) count++;
2030 while (*p != 0) if (*p++ == ':' && *p != 0) count++;
2031 list = store_malloc(count*sizeof(gid_t));
2032 list[ptr++] = (gid_t)(count - 1);
2035 *((gid_t **)(US data_block + ol->v.offset)) = list;
2037 *((gid_t **)ol->v.value) = list;
2043 (void)string_nextinlist(&p, &sep, big_buffer, BIG_BUFFER_SIZE);
2044 if (!route_findgroup(big_buffer, &gid))
2045 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "group %s was not found",
2053 /* Release store if the value of the string doesn't need to be kept. */
2055 if (freesptr) reset_point = store_reset(reset_point);
2058 /* Expanded boolean: if no characters follow, or if there are no dollar
2059 characters, this is a fixed-valued boolean, and we fall through. Otherwise,
2060 save the string for later expansion in the alternate place. */
2062 case opt_expand_bool:
2063 if (*s && Ustrchr(s, '$') != 0)
2065 sprintf(CS name2, "*expand_%.50s", name);
2066 if ((ol2 = find_option(name2, oltop, last)))
2068 reset_point = store_mark();
2069 sptr = read_string(s, name);
2071 *(USS(US data_block + ol2->v.offset)) = sptr;
2073 *(USS ol2->v.value) = sptr;
2080 /* Boolean: if no characters follow, the value is boolvalue. Otherwise
2081 look for yes/not/true/false. Some booleans are stored in a single bit in
2082 a single int. There's a special fudge for verify settings; without a suffix
2083 they set both xx_sender and xx_recipient. The table points to the sender
2084 value; search subsequently for the recipient. There's another special case:
2085 opt_bool_set also notes when a boolean has been set. */
2089 case opt_bool_verify:
2093 s = readconf_readname(name2, EXIM_DRIVERNAME_MAX, s);
2094 if (strcmpic(name2, US"true") == 0 || strcmpic(name2, US"yes") == 0)
2096 else if (strcmpic(name2, US"false") == 0 || strcmpic(name2, US"no") == 0)
2098 else log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
2099 "\"%s\" is not a valid value for the \"%s\" option", name2, name);
2100 if (*s != 0) extra_chars_error(s, string_sprintf("\"%s\" ", name2),
2101 US"for boolean option ", name);
2104 /* Handle single-bit type. */
2106 if (type == opt_bit)
2108 int bit = 1 << ((ol->type >> 16) & 31);
2109 int * ptr = data_block
2110 ? (int *)(US data_block + ol->v.offset)
2111 : (int *)ol->v.value;
2112 if (boolvalue) *ptr |= bit; else *ptr &= ~bit;
2116 /* Handle full BOOL types */
2119 *((BOOL *)(US data_block + ol->v.offset)) = boolvalue;
2121 *((BOOL *)ol->v.value) = boolvalue;
2125 if (type == opt_bool_verify)
2127 sprintf(CS name2, "%.50s_recipient", name + offset);
2128 if ((ol2 = find_option(name2, oltop, last)))
2130 *((BOOL *)(US data_block + ol2->v.offset)) = boolvalue;
2132 *((BOOL *)ol2->v.value) = boolvalue;
2135 /* Note that opt_bool_set type is set, if there is somewhere to do so */
2137 else if (type == opt_bool_set)
2139 sprintf(CS name2, "*set_%.50s", name + offset);
2140 if ((ol2 = find_option(name2, oltop, last)))
2142 *((BOOL *)(US data_block + ol2->v.offset)) = TRUE;
2144 *((BOOL *)ol2->v.value) = TRUE;
2152 inttype = US"octal ";
2154 /* Integer: a simple(ish) case; allow octal and hex formats, and
2155 suffixes K, M, G, and T. The different types affect output, not input. */
2164 lvalue = strtol(CS s, CSS &endptr, intbase);
2167 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "%sinteger expected for %s",
2170 if (errno != ERANGE && *endptr)
2172 uschar * mp = US"TtGgMmKk\0"; /* YyZzEePpTtGgMmKk */
2174 if ((mp = Ustrchr(mp, *endptr)))
2179 if (lvalue > INT_MAX/1024 || lvalue < INT_MIN/1024)
2190 if (errno == ERANGE || lvalue > INT_MAX || lvalue < INT_MIN)
2191 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
2192 "absolute value of integer \"%s\" is too large (overflow)", s);
2194 while (isspace(*endptr)) endptr++;
2196 extra_chars_error(endptr, inttype, US"integer value for ", name);
2198 value = (int)lvalue;
2202 *(int *)(US data_block + ol->v.offset) = value;
2204 *(int *)ol->v.value = value;
2207 /* Integer held in K: again, allow formats and suffixes as above. */
2213 int_eximarith_t lvalue = strtol(CS s, CSS &endptr, intbase);
2216 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "%sinteger expected for %s",
2219 if (errno != ERANGE && *endptr)
2221 uschar * mp = US"ZzEePpTtGgMmKk\0"; /* YyZzEePpTtGgMmKk */
2223 if ((mp = Ustrchr(mp, *endptr)))
2228 if (lvalue > EXIM_ARITH_MAX/1024 || lvalue < EXIM_ARITH_MIN/1024)
2237 lvalue = (lvalue + 512)/1024;
2240 if (errno == ERANGE) log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
2241 "absolute value of integer \"%s\" is too large (overflow)", s);
2243 while (isspace(*endptr)) endptr++;
2245 extra_chars_error(endptr, inttype, US"integer value for ", name);
2248 *(int_eximarith_t *)(US data_block + ol->v.offset) = lvalue;
2250 *(int_eximarith_t *)ol->v.value = lvalue;
2254 /* Fixed-point number: held to 3 decimal places. */
2257 if (sscanf(CS s, "%d%n", &value, &count) != 1)
2258 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
2259 "fixed-point number expected for %s", name);
2261 if (value < 0) log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
2262 "integer \"%s\" is too large (overflow)", s);
2266 if (value < 0) log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
2267 "integer \"%s\" is too large (overflow)", s);
2269 /* We get a coverity error here for using count, as it derived
2270 from the tainted buffer pointed to by s, as parsed by sscanf().
2271 By the definition of sscanf we must be accessing between start
2272 and end of s (assuming it is nul-terminated...) so ignore the error. */
2273 /* coverity[tainted_data] */
2274 if (s[count] == '.')
2277 while (isdigit(s[++count]))
2279 value += (s[count] - '0') * d;
2284 while (isspace(s[count])) count++;
2287 extra_chars_error(s+count, US"fixed-point value for ", name, US"");
2290 *((int *)(US data_block + ol->v.offset)) = value;
2292 *((int *)ol->v.value) = value;
2295 /* There's a special routine to read time values. */
2298 value = readconf_readtime(s, 0, FALSE);
2300 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "invalid time value for %s",
2303 *((int *)(US data_block + ol->v.offset)) = value;
2305 *((int *)ol->v.value) = value;
2308 /* A time list is a list of colon-separated times, with the first
2309 element holding the size of the list and the second the number of
2315 int * list = data_block
2316 ? (int *)(US data_block + ol->v.offset)
2317 : (int *)ol->v.value;
2319 if (*s != 0) for (count = 1; count <= list[0] - 2; count++)
2322 uschar *snext = Ustrchr(s, ':');
2326 while (ss > s && isspace(ss[-1])) ss--;
2329 value = readconf_readtime(s, terminator, FALSE);
2331 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "invalid time value for %s",
2333 if (count > 1 && value <= list[count])
2334 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
2335 "time value out of order for %s", name);
2336 list[count+1] = value;
2337 if (snext == NULL) break;
2339 while (isspace(*s)) s++;
2342 if (count > list[0] - 2)
2343 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "too many time values for %s",
2345 if (count > 0 && list[2] == 0) count = 0;
2352 void (*fn)() = ol->v.fn;
2363 /*************************************************
2364 * Print a time value *
2365 *************************************************/
2368 Argument: a time value in seconds
2369 Returns: pointer to a fixed buffer containing the time as a string,
2370 in readconf_readtime() format
2374 readconf_printtime(int t)
2377 uschar *p = time_buffer;
2394 if (w > 0) p += sprintf(CS p, "%dw", w);
2395 if (d > 0) p += sprintf(CS p, "%dd", d);
2396 if (h > 0) p += sprintf(CS p, "%dh", h);
2397 if (m > 0) p += sprintf(CS p, "%dm", m);
2398 if (s > 0 || p == time_buffer) sprintf(CS p, "%ds", s);
2405 /*************************************************
2406 * Print an individual option value *
2407 *************************************************/
2409 /* This is used by the -bP option, so prints to the standard output.
2410 The entire options list is passed in as an argument, because some options come
2411 in pairs - typically uid/gid settings, which can either be explicit numerical
2412 values, or strings to be expanded later. If the numerical value is unset,
2413 search for "*expand_<name>" to see if there is a string equivalent.
2416 ol option entry, or NULL for an unknown option
2418 options_block NULL for main configuration options; otherwise points to
2419 a driver block; if the option doesn't have opt_public
2420 set, then options_block->options_block is where the item
2422 oltop points to the option list in which ol exists
2423 last one more than the offset of the last entry in optop
2424 no_labels do not show "foo = " at the start.
2426 Returns: boolean success
2430 print_ol(optionlist *ol, const uschar *name, void *options_block,
2431 optionlist *oltop, int last, BOOL no_labels)
2440 uschar name2[EXIM_DRIVERNAME_MAX];
2444 printf("%s is not a known option\n", name);
2448 /* Non-admin callers cannot see options that have been flagged secure by the
2451 if (!f.admin_user && ol->type & opt_secure)
2454 printf("%s\n", CCS hidden);
2456 printf("%s = %s\n", name, CCS hidden);
2460 /* Else show the value of the option */
2462 value = ol->v.value;
2465 if (!(ol->type & opt_public))
2466 options_block = (void *)(((driver_instance *)options_block)->options_block);
2467 value = (void *)(US options_block + (long int)value);
2470 switch(ol->type & opt_mask)
2473 case opt_rewrite: /* Show the text value */
2475 if (!no_labels) printf("%s = ", name);
2476 printf("%s\n", s ? string_printing2(s, SP_TAB) : US"");
2480 if (!no_labels) printf("%s = ", name);
2481 printf("%d\n", *((int *)value));
2486 int x = *((int *)value);
2487 if (x != 0 && (x & 1023) == 0)
2491 if ((x & 1023) == 0)
2496 if (!no_labels) printf("%s = ", name);
2497 printf("%d%c\n", x, c);
2501 if (!no_labels) printf("%s = ", name);
2509 int_eximarith_t x = *((int_eximarith_t *)value);
2510 if (!no_labels) printf("%s = ", name);
2511 if (x == 0) printf("0\n");
2512 else if ((x & ((1<<30)-1)) == 0) printf(PR_EXIM_ARITH "T\n", x >> 30);
2513 else if ((x & ((1<<20)-1)) == 0) printf(PR_EXIM_ARITH "G\n", x >> 20);
2514 else if ((x & ((1<<10)-1)) == 0) printf(PR_EXIM_ARITH "M\n", x >> 10);
2515 else printf(PR_EXIM_ARITH "K\n", x);
2520 if (!no_labels) printf("%s = ", name);
2521 printf("%#o\n", *((int *)value));
2524 /* Can be negative only when "unset", in which case integer */
2528 int x = *((int *)value);
2531 if (x < 0) printf("%s =\n", name); else
2533 if (!no_labels) printf("%s = ", name);
2534 printf("%d.", x/1000);
2547 /* If the numerical value is unset, try for the string value */
2549 case opt_expand_uid:
2550 if (! *get_set_flag(name, oltop, last, options_block))
2552 sprintf(CS name2, "*expand_%.50s", name);
2553 if ((ol2 = find_option(name2, oltop, last)))
2556 s = *USS (US options_block + ol2->v.offset);
2558 s = *USS ol2->v.value;
2559 if (!no_labels) printf("%s = ", name);
2560 printf("%s\n", s ? string_printing(s) : US"");
2565 /* Else fall through */
2568 if (!no_labels) printf("%s = ", name);
2569 if (! *get_set_flag(name, oltop, last, options_block))
2572 if ((pw = getpwuid(*((uid_t *)value))))
2573 printf("%s\n", pw->pw_name);
2575 printf("%ld\n", (long int)(*((uid_t *)value)));
2578 /* If the numerical value is unset, try for the string value */
2580 case opt_expand_gid:
2581 if (! *get_set_flag(name, oltop, last, options_block))
2583 sprintf(CS name2, "*expand_%.50s", name);
2584 if ( (ol2 = find_option(name2, oltop, last))
2585 && (ol2->type & opt_mask) == opt_stringptr)
2588 s = *USS (US options_block + ol2->v.offset);
2590 s = *USS ol2->v.value;
2591 if (!no_labels) printf("%s = ", name);
2592 printf("%s\n", s ? string_printing(s) : US"");
2597 /* Else fall through */
2600 if (!no_labels) printf("%s = ", name);
2601 if (! *get_set_flag(name, oltop, last, options_block))
2604 if ((gr = getgrgid(*((int *)value))))
2605 printf("%s\n", gr->gr_name);
2607 printf("%ld\n", (long int)(*((int *)value)));
2611 uidlist = *((uid_t **)value);
2612 if (!no_labels) printf("%s =", name);
2615 uschar sep = no_labels ? '\0' : ' ';
2616 for (int i = 1; i <= (int)(uidlist[0]); i++)
2618 uschar *name = NULL;
2619 if ((pw = getpwuid(uidlist[i]))) name = US pw->pw_name;
2620 if (sep != '\0') printf("%c", sep);
2621 if (name) printf("%s", name);
2622 else printf("%ld", (long int)(uidlist[i]));
2630 gidlist = *((gid_t **)value);
2631 if (!no_labels) printf("%s =", name);
2634 uschar sep = no_labels ? '\0' : ' ';
2635 for (int i = 1; i <= (int)(gidlist[0]); i++)
2637 uschar *name = NULL;
2638 if ((gr = getgrgid(gidlist[i]))) name = US gr->gr_name;
2639 if (sep != '\0') printf("%c", sep);
2640 if (name) printf("%s", name);
2641 else printf("%ld", (long int)(gidlist[i]));
2649 if (!no_labels) printf("%s = ", name);
2650 printf("%s\n", readconf_printtime(*((int *)value)));
2655 int *list = (int *)value;
2656 if (!no_labels) printf("%s = ", name);
2657 for (int i = 0; i < list[1]; i++)
2658 printf("%s%s", i == 0 ? "" : ":", readconf_printtime(list[i+2]));
2664 printf("%s%s\n", ((*((int *)value)) & (1 << ((ol->type >> 16) & 31)))?
2668 case opt_expand_bool:
2669 sprintf(CS name2, "*expand_%.50s", name);
2670 if ((ol2 = find_option(name2, oltop, last)) && ol2->v.value)
2673 s = *USS (US options_block + ol2->v.offset);
2675 s = *USS ol2->v.value;
2678 if (!no_labels) printf("%s = ", name);
2679 printf("%s\n", string_printing(s));
2682 /* s == NULL => string not set; fall through */
2688 case opt_bool_verify:
2690 printf("%s%s\n", (*((BOOL *)value))? "" : "no_", name);
2694 ol->v.fn(name, NULL, no_labels ? opt_fn_print : opt_fn_print|opt_fn_print_label);
2702 /*************************************************
2703 * Print value from main configuration *
2704 *************************************************/
2706 /* This function, called as a result of encountering the -bP option,
2707 causes the value of any main configuration variable to be output if the
2708 second argument is NULL. There are some special values:
2710 all print all main configuration options
2711 config_file print the name of the configuration file
2712 (configure_file will still work, for backward
2714 routers print the routers' configurations
2715 transports print the transports' configuration
2716 authenticators print the authenticators' configuration
2717 macros print the macros' configuration
2718 router_list print a list of router names
2719 transport_list print a list of transport names
2720 authenticator_list print a list of authentication mechanism names
2721 macro_list print a list of macro names
2722 +name print a named list item
2723 local_scan print the local_scan options
2724 config print the configuration as it is parsed
2725 environment print the used execution environment
2727 If the second argument is not NULL, it must be one of "router", "transport",
2728 "authenticator" or "macro" in which case the first argument identifies the
2729 driver whose options are to be printed.
2732 name option name if type == NULL; else driver name
2733 type NULL or driver type name, as described above
2734 no_labels avoid the "foo = " at the start of an item
2736 Returns: Boolean success
2740 readconf_print(const uschar *name, uschar *type, BOOL no_labels)
2742 BOOL names_only = FALSE;
2743 optionlist *ol2 = NULL;
2744 driver_instance *d = NULL;
2753 static uschar *types[] = { US"address", US"domain", US"host",
2755 static tree_node **anchors[] = { &addresslist_anchor, &domainlist_anchor,
2756 &hostlist_anchor, &localpartlist_anchor };
2758 for (int i = 0; i < 4; i++)
2759 if ((t = tree_search(*(anchors[i]), name+1)))
2761 namedlist_block * nb = t->data.ptr;
2762 const uschar * s = nb->hide ? hidden : nb->string;
2765 printf("%s\n", CCS s);
2767 printf("%slist %s = %s\n", types[i], name+1, CCS s);
2771 printf("no address, domain, host, or local part list called \"%s\" "
2772 "exists\n", name+1);
2777 if ( Ustrcmp(name, "configure_file") == 0
2778 || Ustrcmp(name, "config_file") == 0)
2780 printf("%s\n", CS config_main_filename);
2784 if (Ustrcmp(name, "all") == 0)
2786 for (optionlist * ol = optionlist_config;
2787 ol < optionlist_config + nelem(optionlist_config); ol++)
2788 if (!(ol->type & opt_hidden))
2789 (void) print_ol(ol, US ol->name, NULL,
2790 optionlist_config, nelem(optionlist_config),
2795 if (Ustrcmp(name, "local_scan") == 0)
2797 #ifndef LOCAL_SCAN_HAS_OPTIONS
2798 printf("local_scan() options are not supported\n");
2801 for (optionlist * ol = local_scan_options;
2802 ol < local_scan_options + local_scan_options_count; ol++)
2803 (void) print_ol(ol, US ol->name, NULL, local_scan_options,
2804 local_scan_options_count, no_labels);
2809 if (Ustrcmp(name, "config") == 0)
2811 print_config(f.admin_user, no_labels);
2815 if (Ustrcmp(name, "routers") == 0)
2820 else if (Ustrcmp(name, "transports") == 0)
2822 type = US"transport";
2825 else if (Ustrcmp(name, "authenticators") == 0)
2827 type = US"authenticator";
2830 else if (Ustrcmp(name, "macros") == 0)
2835 else if (Ustrcmp(name, "router_list") == 0)
2841 else if (Ustrcmp(name, "transport_list") == 0)
2843 type = US"transport";
2847 else if (Ustrcmp(name, "authenticator_list") == 0)
2849 type = US"authenticator";
2853 else if (Ustrcmp(name, "macro_list") == 0)
2859 else if (Ustrcmp(name, "environment") == 0)
2864 for (p = USS environ; *p; p++) ;
2865 qsort(environ, p - USS environ, sizeof(*p), string_compare_by_pointer);
2867 for (p = USS environ; *p; p++)
2870 if (no_labels && (q = Ustrchr(*p, '='))) *q = '\0';
2878 return print_ol(find_option(name,
2879 optionlist_config, nelem(optionlist_config)),
2880 name, NULL, optionlist_config, nelem(optionlist_config), no_labels);
2883 /* Handle the options for a router or transport. Skip options that are flagged
2884 as hidden. Some of these are options with names starting with '*', used for
2885 internal alternative representations of other options (which the printing
2886 function will sort out). Others are synonyms kept for backward compatibility.
2889 if (Ustrcmp(type, "router") == 0)
2891 d = (driver_instance *)routers;
2892 ol2 = optionlist_routers;
2893 size = optionlist_routers_size;
2895 else if (Ustrcmp(type, "transport") == 0)
2897 d = (driver_instance *)transports;
2898 ol2 = optionlist_transports;
2899 size = optionlist_transports_size;
2901 else if (Ustrcmp(type, "authenticator") == 0)
2903 d = (driver_instance *)auths;
2904 ol2 = optionlist_auths;
2905 size = optionlist_auths_size;
2908 else if (Ustrcmp(type, "macro") == 0)
2910 /* People store passwords in macros and they were previously not available
2911 for printing. So we have an admin_users restriction. */
2914 fprintf(stderr, "exim: permission denied\n");
2917 for (macro_item * m = macros; m; m = m->next)
2918 if (!name || Ustrcmp(name, m->name) == 0)
2921 printf("%s\n", CS m->name);
2923 printf("%s\n", CS m->replacement);
2925 printf("%s=%s\n", CS m->name, CS m->replacement);
2929 if (!name) return TRUE;
2931 printf("%s %s not found\n", type, name);
2937 for (; d; d = d->next) printf("%s\n", CS d->name);
2941 /* Either search for a given driver, or print all of them */
2943 for (; d; d = d->next)
2947 printf("\n%s %s:\n", d->name, type);
2948 else if (Ustrcmp(d->name, name) != 0) continue;
2950 for (optionlist * ol = ol2; ol < ol2 + size; ol++)
2951 if (!(ol->type & opt_hidden))
2952 rc |= print_ol(ol, US ol->name, d, ol2, size, no_labels);
2954 for (optionlist * ol = d->info->options;
2955 ol < d->info->options + *(d->info->options_count); ol++)
2956 if (!(ol->type & opt_hidden))
2957 rc |= print_ol(ol, US ol->name, d, d->info->options,
2958 *d->info->options_count, no_labels);
2960 if (name) return rc;
2962 if (!name) return TRUE;
2964 printf("%s %s not found\n", type, name);
2970 /*************************************************
2971 * Read a named list item *
2972 *************************************************/
2974 /* This function reads a name and a list (i.e. string). The name is used to
2975 save the list in a tree, sorted by its name. Each entry also has a number,
2976 which can be used for caching tests, but if the string contains any expansion
2977 items other than $key, the number is set negative to inhibit caching. This
2978 mechanism is used for domain, host, and address lists that are referenced by
2982 anchorp points to the tree anchor
2983 numberp points to the current number for this tree
2984 max the maximum number permitted
2985 s the text of the option line, starting immediately after the name
2987 tname the name of the list type, for messages
2988 hide do not output value on "-bP"
2994 read_named_list(tree_node **anchorp, int *numberp, int max, uschar *s,
2995 uschar *tname, BOOL hide)
2997 BOOL forcecache = FALSE;
3000 namedlist_block * nb = store_get(sizeof(namedlist_block), FALSE);
3002 if (Ustrncmp(s, "_cache", 6) == 0)
3009 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "unrecognized configuration line");
3011 if (*numberp >= max)
3012 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "too many named %ss (max is %d)\n",
3015 Uskip_whitespace(&s);
3017 while (isalnum(*s) || *s == '_') s++;
3018 t = store_get(sizeof(tree_node) + s-ss, is_tainted(ss));
3019 Ustrncpy(t->name, ss, s-ss);
3021 Uskip_whitespace(&s);
3023 if (!tree_insertnode(anchorp, t))
3024 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
3025 "duplicate name \"%s\" for a named %s", t->name, tname);
3028 nb->number = *numberp;
3032 if (*s++ != '=') log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
3033 "missing '=' after \"%s\"", t->name);
3034 Uskip_whitespace(&s);
3035 nb->string = read_string(s, t->name);
3036 nb->cache_data = NULL;
3038 /* Check the string for any expansions; if any are found, mark this list
3039 uncacheable unless the user has explicited forced caching. */
3041 if (!forcecache && Ustrchr(nb->string, '$') != NULL) nb->number = -1;
3047 /*************************************************
3048 * Unpick data for a rate limit *
3049 *************************************************/
3051 /* This function is called to unpick smtp_ratelimit_{mail,rcpt} into four
3055 s string, in the form t,b,f,l
3056 where t is the threshold (integer)
3057 b is the initial delay (time)
3058 f is the multiplicative factor (fixed point)
3059 k is the maximum time (time)
3060 threshold where to store threshold
3061 base where to store base in milliseconds
3062 factor where to store factor in milliseconds
3063 limit where to store limit
3065 Returns: nothing (panics on error)
3069 unpick_ratelimit(uschar *s, int *threshold, int *base, double *factor,
3072 uschar bstring[16], lstring[16];
3074 if (sscanf(CS s, "%d, %15[0123456789smhdw.], %lf, %15s", threshold, bstring,
3075 factor, lstring) == 4)
3077 *base = readconf_readtime(bstring, 0, TRUE);
3078 *limit = readconf_readtime(lstring, 0, TRUE);
3079 if (*base >= 0 && *limit >= 0) return;
3081 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "malformed ratelimit data: %s", s);
3087 /*************************************************
3088 * Read main configuration options *
3089 *************************************************/
3091 /* This function is the first to be called for configuration reading. It
3092 opens the configuration file and reads general configuration settings until
3093 it reaches the end of the configuration section. The file is then left open so
3094 that the remaining configuration data can subsequently be read if needed for
3097 The configuration file must be owned either by root or exim, and be writeable
3098 only by root or uid/gid exim. The values for Exim's uid and gid can be changed
3099 in the config file, so the test is done on the compiled in values. A slight
3100 anomaly, to be carefully documented.
3102 The name of the configuration file is taken from a list that is included in the
3103 binary of Exim. It can be altered from the command line, but if that is done,
3104 root privilege is immediately withdrawn unless the caller is root or exim.
3105 The first file on the list that exists is used.
3107 For use on multiple systems that share file systems, first look for a
3108 configuration file whose name has the current node name on the end. If that is
3109 not found, try the generic name. For really contorted configurations, that run
3110 multiple Exims with different uid settings, first try adding the effective uid
3111 before the node name. These complications are going to waste resources on most
3112 systems. Therefore they are available only when requested by compile-time
3116 readconf_main(BOOL nowarn)
3119 struct stat statbuf;
3120 uschar *s, *filename;
3121 const uschar *list = config_main_filelist;
3123 /* Loop through the possible file names */
3125 while((filename = string_nextinlist(&list, &sep, big_buffer, big_buffer_size)))
3128 /* Cut out all the fancy processing unless specifically wanted */
3130 #if defined(CONFIGURE_FILE_USE_NODE) || defined(CONFIGURE_FILE_USE_EUID)
3131 uschar *suffix = filename + Ustrlen(filename);
3133 /* Try for the node-specific file if a node name exists */
3135 #ifdef CONFIGURE_FILE_USE_NODE
3137 if (uname(&uts) >= 0)
3139 #ifdef CONFIGURE_FILE_USE_EUID
3140 sprintf(CS suffix, ".%ld.%.256s", (long int)original_euid, uts.nodename);
3141 config_file = Ufopen(filename, "rb");
3142 if (config_file == NULL)
3143 #endif /* CONFIGURE_FILE_USE_EUID */
3145 sprintf(CS suffix, ".%.256s", uts.nodename);
3146 config_file = Ufopen(filename, "rb");
3149 #endif /* CONFIGURE_FILE_USE_NODE */
3151 /* Otherwise, try the generic name, possibly with the euid added */
3153 #ifdef CONFIGURE_FILE_USE_EUID
3154 if (config_file == NULL)
3156 sprintf(CS suffix, ".%ld", (long int)original_euid);
3157 config_file = Ufopen(filename, "rb");
3159 #endif /* CONFIGURE_FILE_USE_EUID */
3161 /* Finally, try the unadorned name */
3163 if (config_file == NULL)
3166 config_file = Ufopen(filename, "rb");
3168 #else /* if neither defined */
3170 /* This is the common case when the fancy processing is not included. */
3172 config_file = Ufopen(filename, "rb");
3175 /* If the file does not exist, continue to try any others. For any other
3176 error, break out (and die). */
3178 if (config_file != NULL || errno != ENOENT) break;
3181 /* On success, save the name for verification; config_filename is used when
3182 logging configuration errors (it changes for .included files) whereas
3183 config_main_filename is the name shown by -bP. Failure to open a configuration
3184 file is a serious disaster. */
3188 uschar *last_slash = Ustrrchr(filename, '/');
3189 config_filename = config_main_filename = string_copy(filename);
3191 /* The config_main_directory we need for the $config_dir expansion.
3192 config_main_filename we need for $config_file expansion.
3193 And config_dir is the directory of the current configuration, used for
3194 relative .includes. We do need to know it's name, as we change our working
3197 if (filename[0] == '/')
3198 config_main_directory = last_slash == filename ? US"/" : string_copyn(filename, last_slash - filename);
3201 /* relative configuration file name: working dir + / + basename(filename) */
3203 uschar buf[PATH_MAX];
3206 if (os_getcwd(buf, PATH_MAX) == NULL)
3208 perror("exim: getcwd");
3211 g = string_cat(NULL, buf);
3213 /* If the dir does not end with a "/", append one */
3214 if (g->s[g->ptr-1] != '/')
3215 g = string_catn(g, US"/", 1);
3217 /* If the config file contains a "/", extract the directory part */
3219 g = string_catn(g, filename, last_slash - filename);
3221 config_main_directory = string_from_gstring(g);
3223 config_directory = config_main_directory;
3227 if (filename == NULL)
3228 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "non-existent configuration file(s): "
3229 "%s", config_main_filelist);
3231 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "%s", string_open_failed(errno,
3232 "configuration file %s", filename));
3235 /* Now, once we found and opened our configuration file, we change the directory
3236 to a safe place. Later we change to $spool_directory. */
3238 if (Uchdir("/") < 0)
3240 perror("exim: chdir `/': ");
3244 /* Check the status of the file we have opened, if we have retained root
3245 privileges and the file isn't /dev/null (which *should* be 0666). */
3247 if (f.trusted_config && Ustrcmp(filename, US"/dev/null"))
3249 if (fstat(fileno(config_file), &statbuf) != 0)
3250 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "failed to stat configuration file %s",
3253 if ((statbuf.st_uid != root_uid /* owner not root */
3254 #ifdef CONFIGURE_OWNER
3255 && statbuf.st_uid != config_uid /* owner not the special one */
3258 (statbuf.st_gid != root_gid /* group not root & */
3259 #ifdef CONFIGURE_GROUP
3260 && statbuf.st_gid != config_gid /* group not the special one */
3262 && (statbuf.st_mode & 020) != 0) || /* group writeable */
3264 ((statbuf.st_mode & 2) != 0)) /* world writeable */
3266 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "Exim configuration file %s has the "
3267 "wrong owner, group, or mode", big_buffer);
3269 /* Do a dummy store-allocation of a size related to the (toplevel) file size.
3270 This assumes we will need this much storage to handle all the allocations
3271 during startup; it won't help when .include is being used. When it does, it
3272 will cut down on the number of store blocks (and malloc calls, and sbrk
3273 syscalls). It also assume we're on the relevant pool. */
3275 if (statbuf.st_size > 8192)
3277 rmark r = store_mark();
3278 void * dummy = store_get((int)statbuf.st_size, FALSE);
3283 /* Process the main configuration settings. They all begin with a lower case
3284 letter. If we see something starting with an upper case letter, it is taken as
3285 a macro definition. */
3287 while ((s = get_config_line()))
3292 if (config_lineno == 1 && Ustrstr(s, "\xef\xbb\xbf") == s)
3293 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
3294 "found unexpected BOM (Byte Order Mark)");
3298 if (!macro_read_assignment(s)) exim_exit(EXIT_FAILURE);
3302 t = (hide = Ustrncmp(s, "hide", 4) == 0 && isspace(s[4])) ? s + 5 : s;
3304 if (Ustrncmp(t, "domainlist", 10) == 0)
3305 read_named_list(&domainlist_anchor, &domainlist_count,
3306 MAX_NAMED_LIST, t+10, US"domain list", hide);
3308 else if (Ustrncmp(t, "hostlist", 8) == 0)
3309 read_named_list(&hostlist_anchor, &hostlist_count,
3310 MAX_NAMED_LIST, t+8, US"host list", hide);
3312 else if (Ustrncmp(t, US"addresslist", 11) == 0)
3313 read_named_list(&addresslist_anchor, &addresslist_count,
3314 MAX_NAMED_LIST, t+11, US"address list", hide);
3316 else if (Ustrncmp(t, US"localpartlist", 13) == 0)
3317 read_named_list(&localpartlist_anchor, &localpartlist_count,
3318 MAX_NAMED_LIST, t+13, US"local part list", hide);
3321 (void) readconf_handle_option(s, optionlist_config, optionlist_config_size,
3322 NULL, US"main option \"%s\" unknown");
3326 /* If local_sender_retain is set, local_from_check must be unset. */
3328 if (local_sender_retain && local_from_check)
3329 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "both local_from_check and "
3330 "local_sender_retain are set; this combination is not allowed");
3332 /* If the timezone string is empty, set it to NULL, implying no TZ variable
3335 if (timezone_string != NULL && *timezone_string == 0) timezone_string = NULL;
3337 /* The max retry interval must not be greater than 24 hours. */
3339 if (retry_interval_max > 24*60*60) retry_interval_max = 24*60*60;
3341 /* remote_max_parallel must be > 0 */
3343 if (remote_max_parallel <= 0) remote_max_parallel = 1;
3345 /* Save the configured setting of freeze_tell, so we can re-instate it at the
3346 start of a new SMTP message. */
3348 freeze_tell_config = freeze_tell;
3350 /* The primary host name may be required for expansion of spool_directory
3351 and log_file_path, so make sure it is set asap. It is obtained from uname(),
3352 but if that yields an unqualified value, make a FQDN by using gethostbyname to
3353 canonize it. Some people like upper case letters in their host names, so we
3354 don't force the case. */
3356 if (primary_hostname == NULL)
3358 const uschar *hostname;
3360 if (uname(&uts) < 0)
3361 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "uname() failed to yield host name");
3362 hostname = US uts.nodename;
3364 if (Ustrchr(hostname, '.') == NULL)
3367 struct hostent *hostdata;
3370 if (!disable_ipv6 && (dns_ipv4_lookup == NULL ||
3371 match_isinlist(hostname, CUSS &dns_ipv4_lookup, 0, NULL, NULL,
3372 MCL_DOMAIN, TRUE, NULL) != OK))
3381 #if HAVE_GETIPNODEBYNAME
3383 hostdata = getipnodebyname(CS hostname, af, 0, &error_num);
3385 hostdata = gethostbyname2(CS hostname, af);
3388 hostdata = gethostbyname(CS hostname);
3391 if (hostdata != NULL)
3393 hostname = US hostdata->h_name;
3397 if (af == AF_INET) break;
3402 primary_hostname = string_copy(hostname);
3405 /* Set up default value for smtp_active_hostname */
3407 smtp_active_hostname = primary_hostname;
3409 /* If spool_directory wasn't set in the build-time configuration, it must have
3410 got set above. Of course, writing to the log may not work if log_file_path is
3411 not set, but it will at least get to syslog or somewhere, with any luck. */
3413 if (!*spool_directory)
3414 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "spool_directory undefined: cannot "
3417 /* Expand the spool directory name; it may, for example, contain the primary
3418 host name. Same comment about failure. */
3420 if (!(s = expand_string(spool_directory)))
3421 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "failed to expand spool_directory "
3422 "\"%s\": %s", spool_directory, expand_string_message);
3423 spool_directory = s;
3425 /* Expand log_file_path, which must contain "%s" in any component that isn't
3426 the null string or "syslog". It is also allowed to contain one instance of %D
3427 or %M. However, it must NOT contain % followed by anything else. */
3431 const uschar *ss, *sss;
3432 int sep = ':'; /* Fixed for log file path */
3433 if (!(s = expand_string(log_file_path)))
3434 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "failed to expand log_file_path "
3435 "\"%s\": %s", log_file_path, expand_string_message);
3438 while ((sss = string_nextinlist(&ss, &sep, big_buffer, big_buffer_size)))
3441 if (sss[0] == 0 || Ustrcmp(sss, "syslog") == 0) continue;
3442 if (!(t = Ustrstr(sss, "%s")))
3443 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "log_file_path \"%s\" does not "
3444 "contain \"%%s\"", sss);
3446 if ((t = Ustrchr(sss, '%')))
3447 if ((t[1] != 'D' && t[1] != 'M') || Ustrchr(t+2, '%') != NULL)
3448 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "log_file_path \"%s\" contains "
3449 "unexpected \"%%\" character", s);
3455 /* Interpret syslog_facility into an integer argument for 'ident' param to
3456 openlog(). Default is LOG_MAIL set in globals.c. Allow the user to omit the
3459 if (syslog_facility_str)
3462 uschar *s = syslog_facility_str;
3464 if ((Ustrlen(syslog_facility_str) >= 4) &&
3465 (strncmpic(syslog_facility_str, US"log_", 4) == 0))
3468 for (i = 0; i < syslog_list_size; i++)
3469 if (strcmpic(s, syslog_list[i].name) == 0)
3471 syslog_facility = syslog_list[i].value;
3475 if (i >= syslog_list_size)
3476 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
3477 "failed to interpret syslog_facility \"%s\"", syslog_facility_str);
3480 /* Expand pid_file_path */
3482 if (*pid_file_path != 0)
3484 if (!(s = expand_string(pid_file_path)))
3485 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "failed to expand pid_file_path "
3486 "\"%s\": %s", pid_file_path, expand_string_message);
3490 /* Set default value of process_log_path */
3492 if (!process_log_path || *process_log_path =='\0')
3493 process_log_path = string_sprintf("%s/exim-process.info", spool_directory);
3495 /* Compile the regex for matching a UUCP-style "From_" line in an incoming
3498 regex_From = regex_must_compile(uucp_from_pattern, FALSE, TRUE);
3500 /* Unpick the SMTP rate limiting options, if set */
3502 if (smtp_ratelimit_mail)
3503 unpick_ratelimit(smtp_ratelimit_mail, &smtp_rlm_threshold,
3504 &smtp_rlm_base, &smtp_rlm_factor, &smtp_rlm_limit);
3506 if (smtp_ratelimit_rcpt)
3507 unpick_ratelimit(smtp_ratelimit_rcpt, &smtp_rlr_threshold,
3508 &smtp_rlr_base, &smtp_rlr_factor, &smtp_rlr_limit);
3510 /* The qualify domains default to the primary host name */
3512 if (!qualify_domain_sender)
3513 qualify_domain_sender = primary_hostname;
3514 if (!qualify_domain_recipient)
3515 qualify_domain_recipient = qualify_domain_sender;
3517 /* Setting system_filter_user in the configuration sets the gid as well if a
3518 name is given, but a numerical value does not. */
3520 if (system_filter_uid_set && !system_filter_gid_set)
3522 struct passwd *pw = getpwuid(system_filter_uid);
3524 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "Failed to look up uid %ld",
3525 (long int)system_filter_uid);
3526 system_filter_gid = pw->pw_gid;
3527 system_filter_gid_set = TRUE;
3530 /* If the errors_reply_to field is set, check that it is syntactically valid
3531 and ensure it contains a domain. */
3533 if (errors_reply_to)
3536 int start, end, domain;
3537 uschar *recipient = parse_extract_address(errors_reply_to, &errmess,
3538 &start, &end, &domain, FALSE);
3541 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
3542 "error in errors_reply_to (%s): %s", errors_reply_to, errmess);
3545 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
3546 "errors_reply_to (%s) does not contain a domain", errors_reply_to);
3549 /* If smtp_accept_queue or smtp_accept_max_per_host is set, then
3550 smtp_accept_max must also be set. */
3552 if (smtp_accept_max == 0 &&
3553 (smtp_accept_queue > 0 || smtp_accept_max_per_host != NULL))
3554 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
3555 "smtp_accept_max must be set if smtp_accept_queue or "
3556 "smtp_accept_max_per_host is set");
3558 /* Set up the host number if anything is specified. It is an expanded string
3559 so that it can be computed from the host name, for example. We do this last
3560 so as to ensure that everything else is set up before the expansion. */
3562 if (host_number_string)
3566 uschar *s = expand_string(host_number_string);
3569 log_write(0, LOG_MAIN|LOG_PANIC_DIE,
3570 "failed to expand localhost_number \"%s\": %s",
3571 host_number_string, expand_string_message);
3572 n = Ustrtol(s, &end, 0);
3573 while (isspace(*end)) end++;
3575 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
3576 "localhost_number value is not a number: %s", s);
3577 if (n > LOCALHOST_MAX)
3578 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
3579 "localhost_number is greater than the maximum allowed value (%d)",
3585 /* If tls_verify_hosts is set, tls_verify_certificates must also be set */
3587 if ((tls_verify_hosts || tls_try_verify_hosts) && !tls_verify_certificates)
3588 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
3589 "tls_%sverify_hosts is set, but tls_verify_certificates is not set",
3590 tls_verify_hosts ? "" : "try_");
3592 /* Magic number: at time of writing, 1024 has been the long-standing value
3593 used by so many clients, and what Exim used to use always, that it makes
3594 sense to just min-clamp this max-clamp at that. */
3595 if (tls_dh_max_bits < 1024)
3596 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
3597 "tls_dh_max_bits is too small, must be at least 1024 for interop");
3599 /* If openssl_options is set, validate it */
3600 if (openssl_options)
3603 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
3604 "openssl_options is set but we're using GnuTLS");
3607 if (!tls_openssl_options_parse(openssl_options, &dummy))
3608 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
3609 "openssl_options parse error: %s", openssl_options);
3612 #endif /*DISABLE_TLS*/
3614 if (!nowarn && !keep_environment && environ && *environ)
3615 log_write(0, LOG_MAIN,
3616 "Warning: purging the environment.\n"
3617 " Suggested action: use keep_environment.");
3622 /*************************************************
3623 * Initialize one driver *
3624 *************************************************/
3626 /* This is called once the driver's generic options, if any, have been read.
3627 We can now find the driver, set up defaults for the private options, and
3628 unset any "set" bits in the private options table (which might have been
3629 set by another incarnation of the same driver).
3632 d pointer to driver instance block, with generic
3634 drivers_available vector of available drivers
3635 size_of_info size of each block in drivers_available
3636 class class of driver, for error message
3638 Returns: pointer to the driver info block
3641 static driver_info *
3642 init_driver(driver_instance *d, driver_info *drivers_available,
3643 int size_of_info, uschar *class)
3645 for (driver_info * dd = drivers_available; dd->driver_name[0] != 0;
3646 dd = (driver_info *)((US dd) + size_of_info))
3647 if (Ustrcmp(d->driver_name, dd->driver_name) == 0)
3649 int len = dd->options_len;
3651 d->options_block = store_get(len, FALSE);
3652 memcpy(d->options_block, dd->options_block, len);
3653 for (int i = 0; i < *(dd->options_count); i++)
3654 dd->options[i].type &= ~opt_set;
3658 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
3659 "%s %s: cannot find %s driver \"%s\"", class, d->name, class, d->driver_name);
3661 return NULL; /* never obeyed */
3667 /*************************************************
3668 * Initialize driver list *
3669 *************************************************/
3671 /* This function is called for routers, transports, and authentication
3672 mechanisms. It reads the data from the current point in the configuration file
3673 up to the end of the section, and sets up a chain of instance blocks according
3674 to the file's contents. The file will already have been opened by a call to
3675 readconf_main, and must be left open for subsequent reading of further data.
3677 Any errors cause a panic crash. Note that the blocks with names driver_info and
3678 driver_instance must map the first portions of all the _info and _instance
3679 blocks for this shared code to work.
3682 class "router", "transport", or "authenticator"
3683 anchor &routers, &transports, &auths
3684 drivers_available available drivers
3685 size_of_info size of each info block
3686 instance_default points to default data for an instance
3687 instance_size size of instance block
3688 driver_optionlist generic option list
3689 driver_optionlist_count count of generic option list
3695 readconf_driver_init(
3697 driver_instance **anchor,
3698 driver_info *drivers_available,
3700 void *instance_default,
3702 optionlist *driver_optionlist,
3703 int driver_optionlist_count)
3705 driver_instance **p = anchor;
3706 driver_instance *d = NULL;
3709 while ((buffer = get_config_line()))
3711 uschar name[EXIM_DRIVERNAME_MAX];
3714 /* Read the first name on the line and test for the start of a new driver. A
3715 macro definition indicates the end of the previous driver. If this isn't the
3716 start of a new driver, the line will be re-read. */
3718 s = readconf_readname(name, sizeof(name), buffer);
3720 /* Handle macro definition, first finishing off the initialization of the
3721 previous driver, if any. */
3723 if (isupper(*name) && *s == '=')
3727 if (!d->driver_name)
3728 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
3729 "no driver defined for %s \"%s\"", class, d->name);
3730 /* s is using big_buffer, so this call had better not */
3734 if (!macro_read_assignment(buffer)) exim_exit(EXIT_FAILURE);
3738 /* If the line starts with a name terminated by a colon, we are at the
3739 start of the definition of a new driver. The rest of the line must be
3744 /* Finish off initializing the previous driver. */
3748 if (!d->driver_name)
3749 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
3750 "no driver defined for %s \"%s\"", class, d->name);
3754 /* Check that we haven't already got a driver of this name */
3756 for (d = *anchor; d; d = d->next)
3757 if (Ustrcmp(name, d->name) == 0)
3758 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
3759 "there are two %ss called \"%s\"", class, name);
3761 /* Set up a new driver instance data block on the chain, with
3762 its default values installed. */
3764 d = store_get(instance_size, FALSE);
3765 memcpy(d, instance_default, instance_size);
3768 d->name = string_copy(name);
3770 /* Clear out the "set" bits in the generic options */
3772 for (int i = 0; i < driver_optionlist_count; i++)
3773 driver_optionlist[i].type &= ~opt_set;
3775 /* Check nothing more on this line, then do the next loop iteration. */
3777 Uskip_whitespace(&s);
3778 if (*s) extra_chars_error(s, US"driver name ", name, US"");
3782 /* Not the start of a new driver. Give an error if we have not set up a
3783 current driver yet. */
3786 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "%s name missing", class);
3788 /* First look to see if this is a generic option; if it is "driver",
3789 initialize the driver. If is it not a generic option, we can look for a
3790 private option provided that the driver has been previously set up. */
3792 if (readconf_handle_option(buffer, driver_optionlist,
3793 driver_optionlist_count, d, NULL))
3795 if (!d->info && d->driver_name)
3796 init_driver(d, drivers_available, size_of_info, class);
3799 /* Handle private options - pass the generic block because some may
3800 live therein. A flag with each option indicates if it is in the public
3804 readconf_handle_option(buffer, d->info->options,
3805 *(d->info->options_count), d, US"option \"%s\" unknown");
3807 /* The option is not generic and the driver name has not yet been given. */
3809 else log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "option \"%s\" unknown "
3810 "(\"driver\" must be specified before any private options)", name);
3813 /* Run the initialization function for the final driver. */
3817 if (!d->driver_name)
3818 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
3819 "no driver defined for %s \"%s\"", class, d->name);
3826 /*************************************************
3827 * Check driver dependency *
3828 *************************************************/
3830 /* This function is passed a driver instance and a string. It checks whether
3831 any of the string options for the driver contains the given string as an
3835 d points to a driver instance block
3836 s the string to search for
3838 Returns: TRUE if a dependency is found
3842 readconf_depends(driver_instance *d, uschar *s)
3844 int count = *(d->info->options_count);
3847 for (optionlist * ol = d->info->options; ol < d->info->options + count; ol++)
3848 if ((ol->type & opt_mask) == opt_stringptr)
3850 void * options_block = ol->type & opt_public ? (void *)d : d->options_block;
3851 uschar * value = *USS(US options_block + ol->v.offset);
3853 if (value && (ss = Ustrstr(value, s)) != NULL)
3855 if (ss <= value || (ss[-1] != '$' && ss[-1] != '{') ||
3856 isalnum(ss[Ustrlen(s)])) continue;
3857 DEBUG(D_transport) debug_printf("driver %s: \"%s\" option depends on %s\n",
3858 d->name, ol->name, s);
3863 DEBUG(D_transport) debug_printf("driver %s does not depend on %s\n", d->name, s);
3870 /*************************************************
3871 * Decode an error type for retries *
3872 *************************************************/
3874 /* This function is global because it is also called from the main
3875 program when testing retry information. It decodes strings such as "quota_7d"
3876 into numerical error codes.
3879 pp points to start of text
3880 p points past end of text
3881 basic_errno points to an int to receive the main error number
3882 more_errno points to an int to receive the secondary error data
3884 Returns: NULL if decoded correctly; else points to error text
3888 readconf_retry_error(const uschar *pp, const uschar *p,
3889 int *basic_errno, int *more_errno)
3892 const uschar *q = pp;
3893 while (q < p && *q != '_') q++;
3896 if (len == 5 && strncmpic(pp, US"quota", len) == 0)
3898 *basic_errno = ERRNO_EXIMQUOTA;
3899 if (q != p && (*more_errno = readconf_readtime(q+1, *p, FALSE)) < 0)
3900 return US"bad time value";
3903 else if (len == 7 && strncmpic(pp, US"refused", len) == 0)
3905 *basic_errno = ECONNREFUSED;
3908 if (strncmpic(q+1, US"MX", p-q-1) == 0) *more_errno = 'M';
3909 else if (strncmpic(q+1, US"A", p-q-1) == 0) *more_errno = 'A';
3910 else return US"A or MX expected after \"refused\"";
3914 else if (len == 7 && strncmpic(pp, US"timeout", len) == 0)
3916 *basic_errno = ETIMEDOUT;
3920 int xlen = p - q - 1;
3921 const uschar *x = q + 1;
3923 static uschar *extras[] =
3924 { US"A", US"MX", US"connect", US"connect_A", US"connect_MX" };
3925 static int values[] =
3926 { 'A', 'M', RTEF_CTOUT, RTEF_CTOUT|'A', RTEF_CTOUT|'M' };
3928 for (i = 0; i < nelem(extras); i++)
3929 if (strncmpic(x, extras[i], xlen) == 0)
3931 *more_errno = values[i];
3935 if (i >= nelem(extras))
3936 if (strncmpic(x, US"DNS", xlen) == 0)
3937 log_write(0, LOG_MAIN|LOG_PANIC, "\"timeout_dns\" is no longer "
3938 "available in retry rules (it has never worked) - treated as "
3941 return US"\"A\", \"MX\", or \"connect\" expected after \"timeout\"";
3945 else if (strncmpic(pp, US"mail_4", 6) == 0 ||
3946 strncmpic(pp, US"rcpt_4", 6) == 0 ||
3947 strncmpic(pp, US"data_4", 6) == 0)
3950 int x = 255; /* means "any 4xx code" */
3951 if (p != pp + 8) bad = TRUE; else
3953 int a = pp[6], b = pp[7];
3957 if (isdigit(b)) x += b - '0';
3958 else if (b == 'x') x += 100;
3961 else if (a != 'x' || b != 'x') bad = TRUE;
3965 return string_sprintf("%.4s_4 must be followed by xx, dx, or dd, where "
3966 "x is literal and d is any digit", pp);
3968 *basic_errno = *pp == 'm' ? ERRNO_MAIL4XX :
3969 *pp == 'r' ? ERRNO_RCPT4XX : ERRNO_DATA4XX;
3970 *more_errno = x << 8;
3973 else if (len == 4 && strncmpic(pp, US"auth", len) == 0 &&
3974 strncmpic(q+1, US"failed", p-q-1) == 0)
3975 *basic_errno = ERRNO_AUTHFAIL;
3977 else if (strncmpic(pp, US"lost_connection", p - pp) == 0)
3978 *basic_errno = ERRNO_SMTPCLOSED;
3980 else if (strncmpic(pp, US"tls_required", p - pp) == 0)
3981 *basic_errno = ERRNO_TLSREQUIRED;
3983 else if (strncmpic(pp, US"lookup", p - pp) == 0)
3984 *basic_errno = ERRNO_UNKNOWNHOST;
3986 else if (len != 1 || Ustrncmp(pp, "*", 1) != 0)
3987 return string_sprintf("unknown or malformed retry error \"%.*s\"", (int) (p-pp), pp);
3995 /*************************************************
3996 * Read retry information *
3997 *************************************************/
3999 /* Each line of retry information contains:
4001 . A domain name pattern or an address pattern;
4003 . An error name, possibly with additional data, or *;
4005 . An optional sequence of retry items, each consisting of an identifying
4006 letter, a cutoff time, and optional parameters.
4008 All this is decoded and placed into a control block. */
4011 /* Subroutine to read an argument, preceded by a comma and terminated
4012 by comma, semicolon, whitespace, or newline. The types are: 0 = time value,
4013 1 = fixed point number (returned *1000).
4016 paddr pointer to pointer to current character; updated
4017 type 0 => read a time; 1 => read a fixed point number
4019 Returns: time in seconds or fixed point number * 1000
4023 retry_arg(const uschar **paddr, int type)
4025 const uschar *p = *paddr;
4028 if (*p++ != ',') log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "comma expected");
4030 Uskip_whitespace(&p);
4032 while (isalnum(*p) || (type == 1 && *p == '.')) p++;
4034 if (*p != 0 && !isspace(*p) && *p != ',' && *p != ';')
4035 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "comma or semicolon expected");
4040 case 0: return readconf_readtime(pp, *p, FALSE);
4041 case 1: return readconf_readfixed(pp, *p);
4043 return 0; /* Keep picky compilers happy */
4046 /* The function proper */
4049 readconf_retries(void)
4051 retry_config **chain = &retries;
4055 while ((p = get_config_line()))
4057 retry_rule **rchain;
4061 next = store_get(sizeof(retry_config), FALSE);
4064 chain = &(next->next);
4065 next->basic_errno = next->more_errno = 0;
4066 next->senders = NULL;
4068 rchain = &(next->rules);
4070 next->pattern = string_dequote(&p);
4071 Uskip_whitespace(&p);
4073 while (mac_isgraph(*p)) p++;
4074 if (p - pp <= 0) log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
4075 "missing error type in retry rule");
4077 /* Test error names for things we understand. */
4079 if ((error = readconf_retry_error(pp, p, &next->basic_errno,
4080 &next->more_errno)))
4081 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "%s", error);
4083 /* There may be an optional address list of senders to be used as another
4084 constraint on the rule. This was added later, so the syntax is a bit of a
4085 fudge. Anything that is not a retry rule starting "F," or "G," is treated as
4088 Uskip_whitespace(&p);
4089 if (Ustrncmp(p, "senders", 7) == 0)
4092 Uskip_whitespace(&p);
4093 if (*p++ != '=') log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
4094 "\"=\" expected after \"senders\" in retry rule");
4095 Uskip_whitespace(&p);
4096 next->senders = string_dequote(&p);
4099 /* Now the retry rules. Keep the maximum timeout encountered. */
4101 Uskip_whitespace(&p);
4105 retry_rule *rule = store_get(sizeof(retry_rule), FALSE);
4107 rchain = &(rule->next);
4109 rule->rule = toupper(*p++);
4110 rule->timeout = retry_arg(&p, 0);
4111 if (rule->timeout > retry_maximum_timeout)
4112 retry_maximum_timeout = rule->timeout;
4116 case 'F': /* Fixed interval */
4117 rule->p1 = retry_arg(&p, 0);
4120 case 'G': /* Geometrically increasing intervals */
4121 case 'H': /* Ditto, but with randomness */
4122 rule->p1 = retry_arg(&p, 0);
4123 rule->p2 = retry_arg(&p, 1);
4127 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "unknown retry rule letter");
4131 if (rule->timeout <= 0 || rule->p1 <= 0 ||
4132 (rule->rule != 'F' && rule->p2 < 1000))
4133 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
4134 "bad parameters for retry rule");
4136 if (Uskip_whitespace(&p) == ';')
4139 Uskip_whitespace(&p);
4142 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "semicolon expected");
4149 /*************************************************
4150 * Initialize authenticators *
4151 *************************************************/
4153 /* Read the authenticators section of the configuration file.
4162 #ifndef DISABLE_PIPE_CONNECT
4166 readconf_driver_init(US"authenticator",
4167 (driver_instance **)(&auths), /* chain anchor */
4168 (driver_info *)auths_available, /* available drivers */
4169 sizeof(auth_info), /* size of info block */
4170 &auth_defaults, /* default values for generic options */
4171 sizeof(auth_instance), /* size of instance block */
4172 optionlist_auths, /* generic options */
4173 optionlist_auths_size);
4175 for (auth_instance * au = auths; au; au = au->next)
4177 if (!au->public_name)
4178 log_write(0, LOG_PANIC_DIE|LOG_CONFIG, "no public name specified for "
4179 "the %s authenticator", au->name);
4181 for (auth_instance * bu = au->next; bu; bu = bu->next)
4182 if (strcmpic(au->public_name, bu->public_name) == 0)
4183 if ((au->client && bu->client) || (au->server && bu->server))
4184 log_write(0, LOG_PANIC_DIE|LOG_CONFIG, "two %s authenticators "
4185 "(%s and %s) have the same public name (%s)",
4186 au->client ? US"client" : US"server", au->name, bu->name,
4188 #ifndef DISABLE_PIPE_CONNECT
4192 #ifndef DISABLE_PIPE_CONNECT
4193 f.smtp_in_early_pipe_no_auth = nauths > 16;
4200 /*************************************************
4201 * Read ACL information *
4202 *************************************************/
4204 /* If this run of Exim is not doing something that involves receiving a
4205 message, we can just skip over the ACL information. No need to parse it.
4207 First, we have a function for acl_read() to call back to get the next line. We
4208 need to remember the line we passed, because at the end it will contain the
4209 name of the next ACL. */
4211 static uschar *acl_line;
4216 acl_line = get_config_line();
4221 /* Now the main function:
4232 /* Read each ACL and add it into the tree. Macro (re)definitions are allowed
4235 acl_line = get_config_line();
4239 uschar name[EXIM_DRIVERNAME_MAX];
4243 p = readconf_readname(name, sizeof(name), acl_line);
4244 if (isupper(*name) && *p == '=')
4246 if (!macro_read_assignment(acl_line)) exim_exit(EXIT_FAILURE);
4247 acl_line = get_config_line();
4251 if (*p != ':' || name[0] == 0)
4252 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "missing or malformed ACL name");
4254 node = store_get(sizeof(tree_node) + Ustrlen(name), is_tainted(name));
4255 Ustrcpy(node->name, name);
4256 if (!tree_insertnode(&acl_anchor, node))
4257 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
4258 "there are two ACLs called \"%s\"", name);
4260 node->data.ptr = acl_read(acl_callback, &error);
4262 if (node->data.ptr == NULL && error != NULL)
4263 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "error in ACL: %s", error);
4269 /*************************************************
4270 * Read configuration for local_scan() *
4271 *************************************************/
4273 /* This function is called after "begin local_scan" is encountered in the
4274 configuration file. If the local_scan() function allows for configuration
4275 options, we can process them. Otherwise, we expire in a panic.
4282 local_scan_init(void)
4284 #ifndef LOCAL_SCAN_HAS_OPTIONS
4285 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "local_scan() options not supported: "
4286 "(LOCAL_SCAN_HAS_OPTIONS not defined in Local/Makefile)");
4290 while ((p = get_config_line()))
4291 (void) readconf_handle_option(p, local_scan_options, local_scan_options_count,
4292 NULL, US"local_scan option \"%s\" unknown");
4298 /*************************************************
4299 * Read rest of configuration (after main) *
4300 *************************************************/
4302 /* This function reads the rest of the runtime configuration, after the main
4303 configuration. It is called only when actually needed. Each subsequent section
4304 of the configuration starts with a line of the form
4308 where the name is "routers", "transports", etc. A section is terminated by
4309 hitting the next "begin" line, and the next name is left in next_section.
4310 Because it may confuse people as to whether the names are singular or plural,
4311 we add "s" if it's missing. There is always enough room in next_section for
4312 this. This function is basically just a switch.
4318 static uschar *section_list[] = {
4332 while(next_section[0] != 0)
4336 int last = nelem(section_list);
4338 int n = Ustrlen(next_section);
4340 if (tolower(next_section[n-1]) != 's') Ustrcpy(next_section+n, US"s");
4344 int c = strcmpic(next_section, section_list[mid]);
4346 if (c > 0) first = mid + 1; else last = mid;
4348 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
4349 "\"%.*s\" is not a known configuration section name", n, next_section);
4350 mid = (last + first)/2;
4354 if (((had ^= bit) & bit) == 0)
4355 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
4356 "\"%.*s\" section is repeated in the configuration file", n,
4361 case 0: readconf_acl(); break;
4362 case 1: auths_init(); break;
4363 case 2: local_scan_init(); break;
4364 case 3: readconf_retries(); break;
4365 case 4: readconf_rewrites(); break;
4366 case 5: route_init(); break;
4367 case 6: transport_init(); break;
4371 (void)fclose(config_file);
4374 /* Init the storage for the pre-parsed config lines */
4376 readconf_save_config(const uschar *s)
4378 save_config_line(string_sprintf("# Exim Configuration (%s)",
4379 f.running_in_test_harness ? US"X" : s));
4383 save_config_position(const uschar *file, int line)
4385 save_config_line(string_sprintf("# %d \"%s\"", line, file));
4388 /* Append a pre-parsed logical line to the config lines store,
4389 this operates on a global (static) list that holds all the pre-parsed
4390 config lines, we do no further processing here, output formatting and
4391 honouring of <hide> or macros will be done during output */
4394 save_config_line(const uschar* line)
4396 static config_line_item *current;
4397 config_line_item *next;
4399 next = (config_line_item*) store_get(sizeof(config_line_item), FALSE);
4400 next->line = string_copy(line);
4403 if (!config_lines) config_lines = next;
4404 else current->next = next;
4409 /* List the parsed config lines, care about nice formatting and
4410 hide the <hide> values unless we're the admin user */
4412 print_config(BOOL admin, BOOL terse)
4414 const int TS = terse ? 0 : 2;
4417 for (config_line_item * i = config_lines; i; i = i->next)
4422 /* skip over to the first non-space */
4423 for (current = i->line; *current && isspace(*current); ++current)
4426 if (*current == '\0')
4429 /* Collapse runs of spaces. We stop this if we encounter one of the
4430 * following characters: "'$, as this may indicate careful formatting */
4431 for (p = current; *p; ++p)
4434 if (!isspace(*p)) continue;
4435 if (*p != ' ') *p = ' ';
4437 for (next = p; isspace(*next); ++next)
4441 memmove(p+1, next, Ustrlen(next)+1);
4443 if (*next == '"' || *next == '\'' || *next == '$')
4448 if (current[0] == '#')
4451 /* begin lines are left aligned */
4452 else if (Ustrncmp(current, "begin", 5) == 0 && isspace(current[5]))
4454 if (!terse) puts("");
4459 /* router/acl/transport block names */
4460 else if (current[Ustrlen(current)-1] == ':' && !Ustrchr(current, '='))
4462 if (!terse) puts("");
4463 printf("%*s%s\n", TS, "", current);
4467 /* hidden lines (all MACROS or lines prefixed with "hide") */
4469 && ( isupper(*current)
4470 || Ustrncmp(current, "hide", 4) == 0 && isspace(current[4])
4474 if ((p = Ustrchr(current, '=')))
4477 printf("%*s%s= %s\n", indent, "", current, CCS hidden);
4479 /* e.g.: hide split_spool_directory */
4481 printf("%*s\n", indent, CCS hidden);
4485 /* rest is public */
4486 printf("%*s%s\n", indent, "", current);
4490 #endif /*!MACRO_PREDEF*/
4493 /* End of readconf.c */