projects / exim.git / blob
? search:


11f7184a61a15875f7f9a600bf7509270a7fd2c4
[exim.git] / src / src / readconf.c
1 /*************************************************
2 * Exim - an Internet mail transport agent *
3 *************************************************/
4
5 /* Copyright (c) University of Cambridge 1995 - 2014 */
6 /* See the file NOTICE for conditions of use and distribution. */
7
8 /* Functions for reading the configuration file, and for displaying
9 overall configuration values. Thanks to Brian Candler for the original
10 implementation of the conditional .ifdef etc. */
11
12 #include "exim.h"
13
14 #define CSTATE_STACK_SIZE 10
15
16
17 /* Structure for chain (stack) of .included files */
18
19 typedef struct config_file_item {
20 struct config_file_item *next;
21 uschar *filename;
22 FILE *file;
23 int lineno;
24 } config_file_item;
25
26 /* Structure of table of conditional words and their state transitions */
27
28 typedef struct cond_item {
29 uschar *name;
30 int namelen;
31 int action1;
32 int action2;
33 int pushpop;
34 } cond_item;
35
36 /* Structure of table of syslog facility names and values */
37
38 typedef struct syslog_fac_item {
39 uschar *name;
40 int value;
41 } syslog_fac_item;
42
43
44 /* Static variables */
45
46 static config_file_item *config_file_stack = NULL; /* For includes */
47
48 static uschar *syslog_facility_str = NULL;
49 static uschar next_section[24];
50 static uschar time_buffer[24];
51
52 /* State variables for conditional loading (.ifdef / .else / .endif) */
53
54 static int cstate = 0;
55 static int cstate_stack_ptr = -1;
56 static int cstate_stack[CSTATE_STACK_SIZE];
57
58 /* Table of state transitions for handling conditional inclusions. There are
59 four possible state transitions:
60
61 .ifdef true
62 .ifdef false
63 .elifdef true (or .else)
64 .elifdef false
65
66 .endif just causes the previous cstate to be popped off the stack */
67
68 static int next_cstate[3][4] =
69 {
70 /* State 0: reading from file, or reading until next .else or .endif */
71 { 0, 1, 2, 2 },
72 /* State 1: condition failed, skipping until next .else or .endif */
73 { 2, 2, 0, 1 },
74 /* State 2: skipping until .endif */
75 { 2, 2, 2, 2 },
76 };
77
78 /* Table of conditionals and the states to set. For each name, there are four
79 values: the length of the name (to save computing it each time), the state to
80 set if a macro was found in the line, the state to set if a macro was not found
81 in the line, and a stack manipulation setting which is:
82
83 -1 pull state value off the stack
84 0 don't alter the stack
85 +1 push value onto stack, before setting new state
86 */
87
88 static cond_item cond_list[] = {
89 { US"ifdef", 5, 0, 1, 1 },
90 { US"ifndef", 6, 1, 0, 1 },
91 { US"elifdef", 7, 2, 3, 0 },
92 { US"elifndef", 8, 3, 2, 0 },
93 { US"else", 4, 2, 2, 0 },
94 { US"endif", 5, 0, 0, -1 }
95 };
96
97 static int cond_list_size = sizeof(cond_list)/sizeof(cond_item);
98
99 /* Table of syslog facility names and their values */
100
101 static syslog_fac_item syslog_list[] = {
102 { US"mail", LOG_MAIL },
103 { US"user", LOG_USER },
104 { US"news", LOG_NEWS },
105 { US"uucp", LOG_UUCP },
106 { US"local0", LOG_LOCAL0 },
107 { US"local1", LOG_LOCAL1 },
108 { US"local2", LOG_LOCAL2 },
109 { US"local3", LOG_LOCAL3 },
110 { US"local4", LOG_LOCAL4 },
111 { US"local5", LOG_LOCAL5 },
112 { US"local6", LOG_LOCAL6 },
113 { US"local7", LOG_LOCAL7 },
114 { US"daemon", LOG_DAEMON }
115 };
116
117 static int syslog_list_size = sizeof(syslog_list)/sizeof(syslog_fac_item);
118
119
120
121
122 /*************************************************
123 * Main configuration options *
124 *************************************************/
125
126 /* The list of options that can be set in the main configuration file. This
127 must be in alphabetic order because it is searched by binary chop. */
128
129 static optionlist optionlist_config[] = {
130 { "*set_exim_group", opt_bool|opt_hidden, &exim_gid_set },
131 { "*set_exim_user", opt_bool|opt_hidden, &exim_uid_set },
132 { "*set_system_filter_group", opt_bool|opt_hidden, &system_filter_gid_set },
133 { "*set_system_filter_user", opt_bool|opt_hidden, &system_filter_uid_set },
134 { "accept_8bitmime", opt_bool, &accept_8bitmime },
135 { "acl_not_smtp", opt_stringptr, &acl_not_smtp },
136 #ifdef WITH_CONTENT_SCAN
137 { "acl_not_smtp_mime", opt_stringptr, &acl_not_smtp_mime },
138 #endif
139 { "acl_not_smtp_start", opt_stringptr, &acl_not_smtp_start },
140 { "acl_smtp_auth", opt_stringptr, &acl_smtp_auth },
141 { "acl_smtp_connect", opt_stringptr, &acl_smtp_connect },
142 { "acl_smtp_data", opt_stringptr, &acl_smtp_data },
143 #ifndef DISABLE_PRDR
144 { "acl_smtp_data_prdr", opt_stringptr, &acl_smtp_data_prdr },
145 #endif
146 #ifndef DISABLE_DKIM
147 { "acl_smtp_dkim", opt_stringptr, &acl_smtp_dkim },
148 #endif
149 { "acl_smtp_etrn", opt_stringptr, &acl_smtp_etrn },
150 { "acl_smtp_expn", opt_stringptr, &acl_smtp_expn },
151 { "acl_smtp_helo", opt_stringptr, &acl_smtp_helo },
152 { "acl_smtp_mail", opt_stringptr, &acl_smtp_mail },
153 { "acl_smtp_mailauth", opt_stringptr, &acl_smtp_mailauth },
154 #ifdef WITH_CONTENT_SCAN
155 { "acl_smtp_mime", opt_stringptr, &acl_smtp_mime },
156 #endif
157 { "acl_smtp_notquit", opt_stringptr, &acl_smtp_notquit },
158 { "acl_smtp_predata", opt_stringptr, &acl_smtp_predata },
159 { "acl_smtp_quit", opt_stringptr, &acl_smtp_quit },
160 { "acl_smtp_rcpt", opt_stringptr, &acl_smtp_rcpt },
161 #ifdef SUPPORT_TLS
162 { "acl_smtp_starttls", opt_stringptr, &acl_smtp_starttls },
163 #endif
164 { "acl_smtp_vrfy", opt_stringptr, &acl_smtp_vrfy },
165 { "admin_groups", opt_gidlist, &admin_groups },
166 { "allow_domain_literals", opt_bool, &allow_domain_literals },
167 { "allow_mx_to_ip", opt_bool, &allow_mx_to_ip },
168 { "allow_utf8_domains", opt_bool, &allow_utf8_domains },
169 { "auth_advertise_hosts", opt_stringptr, &auth_advertise_hosts },
170 { "auto_thaw", opt_time, &auto_thaw },
171 #ifdef WITH_CONTENT_SCAN
172 { "av_scanner", opt_stringptr, &av_scanner },
173 #endif
174 { "bi_command", opt_stringptr, &bi_command },
175 #ifdef EXPERIMENTAL_BRIGHTMAIL
176 { "bmi_config_file", opt_stringptr, &bmi_config_file },
177 #endif
178 { "bounce_message_file", opt_stringptr, &bounce_message_file },
179 { "bounce_message_text", opt_stringptr, &bounce_message_text },
180 { "bounce_return_body", opt_bool, &bounce_return_body },
181 { "bounce_return_message", opt_bool, &bounce_return_message },
182 { "bounce_return_size_limit", opt_mkint, &bounce_return_size_limit },
183 { "bounce_sender_authentication",opt_stringptr,&bounce_sender_authentication },
184 { "callout_domain_negative_expire", opt_time, &callout_cache_domain_negative_expire },
185 { "callout_domain_positive_expire", opt_time, &callout_cache_domain_positive_expire },
186 { "callout_negative_expire", opt_time, &callout_cache_negative_expire },
187 { "callout_positive_expire", opt_time, &callout_cache_positive_expire },
188 { "callout_random_local_part",opt_stringptr, &callout_random_local_part },
189 { "check_log_inodes", opt_int, &check_log_inodes },
190 { "check_log_space", opt_Kint, &check_log_space },
191 { "check_rfc2047_length", opt_bool, &check_rfc2047_length },
192 { "check_spool_inodes", opt_int, &check_spool_inodes },
193 { "check_spool_space", opt_Kint, &check_spool_space },
194 { "daemon_smtp_port", opt_stringptr|opt_hidden, &daemon_smtp_port },
195 { "daemon_smtp_ports", opt_stringptr, &daemon_smtp_port },
196 { "daemon_startup_retries", opt_int, &daemon_startup_retries },
197 { "daemon_startup_sleep", opt_time, &daemon_startup_sleep },
198 #ifdef EXPERIMENTAL_DCC
199 { "dcc_direct_add_header", opt_bool, &dcc_direct_add_header },
200 { "dccifd_address", opt_stringptr, &dccifd_address },
201 { "dccifd_options", opt_stringptr, &dccifd_options },
202 #endif
203 { "delay_warning", opt_timelist, &delay_warning },
204 { "delay_warning_condition", opt_stringptr, &delay_warning_condition },
205 { "deliver_drop_privilege", opt_bool, &deliver_drop_privilege },
206 { "deliver_queue_load_max", opt_fixed, &deliver_queue_load_max },
207 { "delivery_date_remove", opt_bool, &delivery_date_remove },
208 #ifdef ENABLE_DISABLE_FSYNC
209 { "disable_fsync", opt_bool, &disable_fsync },
210 #endif
211 { "disable_ipv6", opt_bool, &disable_ipv6 },
212 #ifndef DISABLE_DKIM
213 { "dkim_verify_signers", opt_stringptr, &dkim_verify_signers },
214 #endif
215 #ifdef EXPERIMENTAL_DMARC
216 { "dmarc_forensic_sender", opt_stringptr, &dmarc_forensic_sender },
217 { "dmarc_history_file", opt_stringptr, &dmarc_history_file },
218 { "dmarc_tld_file", opt_stringptr, &dmarc_tld_file },
219 #endif
220 { "dns_again_means_nonexist", opt_stringptr, &dns_again_means_nonexist },
221 { "dns_check_names_pattern", opt_stringptr, &check_dns_names_pattern },
222 { "dns_csa_search_limit", opt_int, &dns_csa_search_limit },
223 { "dns_csa_use_reverse", opt_bool, &dns_csa_use_reverse },
224 { "dns_dnssec_ok", opt_int, &dns_dnssec_ok },
225 { "dns_ipv4_lookup", opt_stringptr, &dns_ipv4_lookup },
226 { "dns_retrans", opt_time, &dns_retrans },
227 { "dns_retry", opt_int, &dns_retry },
228 { "dns_use_edns0", opt_int, &dns_use_edns0 },
229 /* This option is now a no-op, retained for compability */
230 { "drop_cr", opt_bool, &drop_cr },
231 /*********************************************************/
232 #ifdef EXPERIMENTAL_DSN
233 { "dsn_advertise_hosts", opt_stringptr, &dsn_advertise_hosts },
234 #endif
235 { "dsn_from", opt_stringptr, &dsn_from },
236 { "envelope_to_remove", opt_bool, &envelope_to_remove },
237 { "errors_copy", opt_stringptr, &errors_copy },
238 { "errors_reply_to", opt_stringptr, &errors_reply_to },
239 { "exim_group", opt_gid, &exim_gid },
240 { "exim_path", opt_stringptr, &exim_path },
241 { "exim_user", opt_uid, &exim_uid },
242 { "extra_local_interfaces", opt_stringptr, &extra_local_interfaces },
243 { "extract_addresses_remove_arguments", opt_bool, &extract_addresses_remove_arguments },
244 { "finduser_retries", opt_int, &finduser_retries },
245 { "freeze_tell", opt_stringptr, &freeze_tell },
246 { "gecos_name", opt_stringptr, &gecos_name },
247 { "gecos_pattern", opt_stringptr, &gecos_pattern },
248 #ifdef SUPPORT_TLS
249 { "gnutls_allow_auto_pkcs11", opt_bool, &gnutls_allow_auto_pkcs11 },
250 { "gnutls_compat_mode", opt_bool, &gnutls_compat_mode },
251 /* These three gnutls_require_* options stopped working in Exim 4.80 */
252 { "gnutls_require_kx", opt_stringptr, &gnutls_require_kx },
253 { "gnutls_require_mac", opt_stringptr, &gnutls_require_mac },
254 { "gnutls_require_protocols", opt_stringptr, &gnutls_require_proto },
255 #endif
256 { "header_line_maxsize", opt_int, &header_line_maxsize },
257 { "header_maxsize", opt_int, &header_maxsize },
258 { "headers_charset", opt_stringptr, &headers_charset },
259 { "helo_accept_junk_hosts", opt_stringptr, &helo_accept_junk_hosts },
260 { "helo_allow_chars", opt_stringptr, &helo_allow_chars },
261 { "helo_lookup_domains", opt_stringptr, &helo_lookup_domains },
262 { "helo_try_verify_hosts", opt_stringptr, &helo_try_verify_hosts },
263 { "helo_verify_hosts", opt_stringptr, &helo_verify_hosts },
264 { "hold_domains", opt_stringptr, &hold_domains },
265 { "host_lookup", opt_stringptr, &host_lookup },
266 { "host_lookup_order", opt_stringptr, &host_lookup_order },
267 { "host_reject_connection", opt_stringptr, &host_reject_connection },
268 { "hosts_connection_nolog", opt_stringptr, &hosts_connection_nolog },
269 { "hosts_treat_as_local", opt_stringptr, &hosts_treat_as_local },
270 #ifdef LOOKUP_IBASE
271 { "ibase_servers", opt_stringptr, &ibase_servers },
272 #endif
273 { "ignore_bounce_errors_after", opt_time, &ignore_bounce_errors_after },
274 { "ignore_fromline_hosts", opt_stringptr, &ignore_fromline_hosts },
275 { "ignore_fromline_local", opt_bool, &ignore_fromline_local },
276 { "keep_malformed", opt_time, &keep_malformed },
277 #ifdef LOOKUP_LDAP
278 { "ldap_ca_cert_dir", opt_stringptr, &eldap_ca_cert_dir },
279 { "ldap_ca_cert_file", opt_stringptr, &eldap_ca_cert_file },
280 { "ldap_cert_file", opt_stringptr, &eldap_cert_file },
281 { "ldap_cert_key", opt_stringptr, &eldap_cert_key },
282 { "ldap_cipher_suite", opt_stringptr, &eldap_cipher_suite },
283 { "ldap_default_servers", opt_stringptr, &eldap_default_servers },
284 { "ldap_require_cert", opt_stringptr, &eldap_require_cert },
285 { "ldap_start_tls", opt_bool, &eldap_start_tls },
286 { "ldap_version", opt_int, &eldap_version },
287 #endif
288 { "local_from_check", opt_bool, &local_from_check },
289 { "local_from_prefix", opt_stringptr, &local_from_prefix },
290 { "local_from_suffix", opt_stringptr, &local_from_suffix },
291 { "local_interfaces", opt_stringptr, &local_interfaces },
292 { "local_scan_timeout", opt_time, &local_scan_timeout },
293 { "local_sender_retain", opt_bool, &local_sender_retain },
294 { "localhost_number", opt_stringptr, &host_number_string },
295 { "log_file_path", opt_stringptr, &log_file_path },
296 { "log_selector", opt_stringptr, &log_selector_string },
297 { "log_timezone", opt_bool, &log_timezone },
298 { "lookup_open_max", opt_int, &lookup_open_max },
299 { "max_username_length", opt_int, &max_username_length },
300 { "message_body_newlines", opt_bool, &message_body_newlines },
301 { "message_body_visible", opt_mkint, &message_body_visible },
302 { "message_id_header_domain", opt_stringptr, &message_id_domain },
303 { "message_id_header_text", opt_stringptr, &message_id_text },
304 { "message_logs", opt_bool, &message_logs },
305 { "message_size_limit", opt_stringptr, &message_size_limit },
306 #ifdef SUPPORT_MOVE_FROZEN_MESSAGES
307 { "move_frozen_messages", opt_bool, &move_frozen_messages },
308 #endif
309 { "mua_wrapper", opt_bool, &mua_wrapper },
310 #ifdef LOOKUP_MYSQL
311 { "mysql_servers", opt_stringptr, &mysql_servers },
312 #endif
313 { "never_users", opt_uidlist, &never_users },
314 #ifdef SUPPORT_TLS
315 { "openssl_options", opt_stringptr, &openssl_options },
316 #endif
317 #ifdef LOOKUP_ORACLE
318 { "oracle_servers", opt_stringptr, &oracle_servers },
319 #endif
320 { "percent_hack_domains", opt_stringptr, &percent_hack_domains },
321 #ifdef EXIM_PERL
322 { "perl_at_start", opt_bool, &opt_perl_at_start },
323 { "perl_startup", opt_stringptr, &opt_perl_startup },
324 #endif
325 #ifdef LOOKUP_PGSQL
326 { "pgsql_servers", opt_stringptr, &pgsql_servers },
327 #endif
328 { "pid_file_path", opt_stringptr, &pid_file_path },
329 { "pipelining_advertise_hosts", opt_stringptr, &pipelining_advertise_hosts },
330 #ifndef DISABLE_PRDR
331 { "prdr_enable", opt_bool, &prdr_enable },
332 #endif
333 { "preserve_message_logs", opt_bool, &preserve_message_logs },
334 { "primary_hostname", opt_stringptr, &primary_hostname },
335 { "print_topbitchars", opt_bool, &print_topbitchars },
336 { "process_log_path", opt_stringptr, &process_log_path },
337 { "prod_requires_admin", opt_bool, &prod_requires_admin },
338 #ifdef EXPERIMENTAL_PROXY
339 { "proxy_required_hosts", opt_stringptr, &proxy_required_hosts },
340 #endif
341 { "qualify_domain", opt_stringptr, &qualify_domain_sender },
342 { "qualify_recipient", opt_stringptr, &qualify_domain_recipient },
343 { "queue_domains", opt_stringptr, &queue_domains },
344 { "queue_list_requires_admin",opt_bool, &queue_list_requires_admin },
345 { "queue_only", opt_bool, &queue_only },
346 { "queue_only_file", opt_stringptr, &queue_only_file },
347 { "queue_only_load", opt_fixed, &queue_only_load },
348 { "queue_only_load_latch", opt_bool, &queue_only_load_latch },
349 { "queue_only_override", opt_bool, &queue_only_override },
350 { "queue_run_in_order", opt_bool, &queue_run_in_order },
351 { "queue_run_max", opt_int, &queue_run_max },
352 { "queue_smtp_domains", opt_stringptr, &queue_smtp_domains },
353 { "receive_timeout", opt_time, &receive_timeout },
354 { "received_header_text", opt_stringptr, &received_header_text },
355 { "received_headers_max", opt_int, &received_headers_max },
356 { "recipient_unqualified_hosts", opt_stringptr, &recipient_unqualified_hosts },
357 { "recipients_max", opt_int, &recipients_max },
358 { "recipients_max_reject", opt_bool, &recipients_max_reject },
359 #ifdef EXPERIMENTAL_REDIS
360 { "redis_servers", opt_stringptr, &redis_servers },
361 #endif
362 { "remote_max_parallel", opt_int, &remote_max_parallel },
363 { "remote_sort_domains", opt_stringptr, &remote_sort_domains },
364 { "retry_data_expire", opt_time, &retry_data_expire },
365 { "retry_interval_max", opt_time, &retry_interval_max },
366 { "return_path_remove", opt_bool, &return_path_remove },
367 { "return_size_limit", opt_mkint|opt_hidden, &bounce_return_size_limit },
368 { "rfc1413_hosts", opt_stringptr, &rfc1413_hosts },
369 { "rfc1413_query_timeout", opt_time, &rfc1413_query_timeout },
370 { "sender_unqualified_hosts", opt_stringptr, &sender_unqualified_hosts },
371 { "smtp_accept_keepalive", opt_bool, &smtp_accept_keepalive },
372 { "smtp_accept_max", opt_int, &smtp_accept_max },
373 { "smtp_accept_max_nonmail", opt_int, &smtp_accept_max_nonmail },
374 { "smtp_accept_max_nonmail_hosts", opt_stringptr, &smtp_accept_max_nonmail_hosts },
375 { "smtp_accept_max_per_connection", opt_int, &smtp_accept_max_per_connection },
376 { "smtp_accept_max_per_host", opt_stringptr, &smtp_accept_max_per_host },
377 { "smtp_accept_queue", opt_int, &smtp_accept_queue },
378 { "smtp_accept_queue_per_connection", opt_int, &smtp_accept_queue_per_connection },
379 { "smtp_accept_reserve", opt_int, &smtp_accept_reserve },
380 { "smtp_active_hostname", opt_stringptr, &raw_active_hostname },
381 { "smtp_banner", opt_stringptr, &smtp_banner },
382 { "smtp_check_spool_space", opt_bool, &smtp_check_spool_space },
383 { "smtp_connect_backlog", opt_int, &smtp_connect_backlog },
384 { "smtp_enforce_sync", opt_bool, &smtp_enforce_sync },
385 { "smtp_etrn_command", opt_stringptr, &smtp_etrn_command },
386 { "smtp_etrn_serialize", opt_bool, &smtp_etrn_serialize },
387 { "smtp_load_reserve", opt_fixed, &smtp_load_reserve },
388 { "smtp_max_synprot_errors", opt_int, &smtp_max_synprot_errors },
389 { "smtp_max_unknown_commands",opt_int, &smtp_max_unknown_commands },
390 { "smtp_ratelimit_hosts", opt_stringptr, &smtp_ratelimit_hosts },
391 { "smtp_ratelimit_mail", opt_stringptr, &smtp_ratelimit_mail },
392 { "smtp_ratelimit_rcpt", opt_stringptr, &smtp_ratelimit_rcpt },
393 { "smtp_receive_timeout", opt_time, &smtp_receive_timeout },
394 { "smtp_reserve_hosts", opt_stringptr, &smtp_reserve_hosts },
395 { "smtp_return_error_details",opt_bool, &smtp_return_error_details },
396 #ifdef WITH_CONTENT_SCAN
397 { "spamd_address", opt_stringptr, &spamd_address },
398 #endif
399 #ifdef EXPERIMENTAL_SPF
400 { "spf_guess", opt_stringptr, &spf_guess },
401 #endif
402 { "split_spool_directory", opt_bool, &split_spool_directory },
403 { "spool_directory", opt_stringptr, &spool_directory },
404 #ifdef LOOKUP_SQLITE
405 { "sqlite_lock_timeout", opt_int, &sqlite_lock_timeout },
406 #endif
407 #ifdef EXPERIMENTAL_SRS
408 { "srs_config", opt_stringptr, &srs_config },
409 { "srs_hashlength", opt_int, &srs_hashlength },
410 { "srs_hashmin", opt_int, &srs_hashmin },
411 { "srs_maxage", opt_int, &srs_maxage },
412 { "srs_secrets", opt_stringptr, &srs_secrets },
413 { "srs_usehash", opt_bool, &srs_usehash },
414 { "srs_usetimestamp", opt_bool, &srs_usetimestamp },
415 #endif
416 { "strict_acl_vars", opt_bool, &strict_acl_vars },
417 { "strip_excess_angle_brackets", opt_bool, &strip_excess_angle_brackets },
418 { "strip_trailing_dot", opt_bool, &strip_trailing_dot },
419 { "syslog_duplication", opt_bool, &syslog_duplication },
420 { "syslog_facility", opt_stringptr, &syslog_facility_str },
421 { "syslog_processname", opt_stringptr, &syslog_processname },
422 { "syslog_timestamp", opt_bool, &syslog_timestamp },
423 { "system_filter", opt_stringptr, &system_filter },
424 { "system_filter_directory_transport", opt_stringptr,&system_filter_directory_transport },
425 { "system_filter_file_transport",opt_stringptr,&system_filter_file_transport },
426 { "system_filter_group", opt_gid, &system_filter_gid },
427 { "system_filter_pipe_transport",opt_stringptr,&system_filter_pipe_transport },
428 { "system_filter_reply_transport",opt_stringptr,&system_filter_reply_transport },
429 { "system_filter_user", opt_uid, &system_filter_uid },
430 { "tcp_nodelay", opt_bool, &tcp_nodelay },
431 #ifdef USE_TCP_WRAPPERS
432 { "tcp_wrappers_daemon_name", opt_stringptr, &tcp_wrappers_daemon_name },
433 #endif
434 { "timeout_frozen_after", opt_time, &timeout_frozen_after },
435 { "timezone", opt_stringptr, &timezone_string },
436 #ifdef SUPPORT_TLS
437 { "tls_advertise_hosts", opt_stringptr, &tls_advertise_hosts },
438 { "tls_certificate", opt_stringptr, &tls_certificate },
439 { "tls_crl", opt_stringptr, &tls_crl },
440 { "tls_dh_max_bits", opt_int, &tls_dh_max_bits },
441 { "tls_dhparam", opt_stringptr, &tls_dhparam },
442 # if defined(EXPERIMENTAL_OCSP)
443 { "tls_ocsp_file", opt_stringptr, &tls_ocsp_file },
444 # endif
445 { "tls_on_connect_ports", opt_stringptr, &tls_in.on_connect_ports },
446 { "tls_privatekey", opt_stringptr, &tls_privatekey },
447 { "tls_remember_esmtp", opt_bool, &tls_remember_esmtp },
448 { "tls_require_ciphers", opt_stringptr, &tls_require_ciphers },
449 { "tls_try_verify_hosts", opt_stringptr, &tls_try_verify_hosts },
450 { "tls_verify_certificates", opt_stringptr, &tls_verify_certificates },
451 { "tls_verify_hosts", opt_stringptr, &tls_verify_hosts },
452 #endif
453 { "trusted_groups", opt_gidlist, &trusted_groups },
454 { "trusted_users", opt_uidlist, &trusted_users },
455 { "unknown_login", opt_stringptr, &unknown_login },
456 { "unknown_username", opt_stringptr, &unknown_username },
457 { "untrusted_set_sender", opt_stringptr, &untrusted_set_sender },
458 { "uucp_from_pattern", opt_stringptr, &uucp_from_pattern },
459 { "uucp_from_sender", opt_stringptr, &uucp_from_sender },
460 { "warn_message_file", opt_stringptr, &warn_message_file },
461 { "write_rejectlog", opt_bool, &write_rejectlog }
462 };
463
464 static int optionlist_config_size =
465 sizeof(optionlist_config)/sizeof(optionlist);
466
467
468
469 /*************************************************
470 * Find the name of an option *
471 *************************************************/
472
473 /* This function is to aid debugging. Various functions take arguments that are
474 pointer variables in the options table or in option tables for various drivers.
475 For debugging output, it is useful to be able to find the name of the option
476 which is currently being processed. This function finds it, if it exists, by
477 searching the table(s).
478
479 Arguments: a value that is presumed to be in the table above
480 Returns: the option name, or an empty string
481 */
482
483 uschar *
484 readconf_find_option(void *p)
485 {
486 int i;
487 router_instance *r;
488 transport_instance *t;
489
490 for (i = 0; i < optionlist_config_size; i++)
491 if (p == optionlist_config[i].value) return US optionlist_config[i].name;
492
493 for (r = routers; r != NULL; r = r->next)
494 {
495 router_info *ri = r->info;
496 for (i = 0; i < ri->options_count[0]; i++)
497 {
498 if ((ri->options[i].type & opt_mask) != opt_stringptr) continue;
499 if (p == (char *)(r->options_block) + (long int)(ri->options[i].value))
500 return US ri->options[i].name;
501 }
502 }
503
504 for (t = transports; t != NULL; t = t->next)
505 {
506 transport_info *ti = t->info;
507 for (i = 0; i < ti->options_count[0]; i++)
508 {
509 if ((ti->options[i].type & opt_mask) != opt_stringptr) continue;
510 if (p == (char *)(t->options_block) + (long int)(ti->options[i].value))
511 return US ti->options[i].name;
512 }
513 }
514
515 return US"";
516 }
517
518
519
520
521 /*************************************************
522 * Deal with an assignment to a macro *
523 *************************************************/
524
525 /* This function is called when a line that starts with an upper case letter is
526 encountered. The argument "line" should contain a complete logical line, and
527 start with the first letter of the macro name. The macro name and the
528 replacement text are extracted and stored. Redefinition of existing,
529 non-command line, macros is permitted using '==' instead of '='.
530
531 Arguments:
532 s points to the start of the logical line
533
534 Returns: nothing
535 */
536
537 static void
538 read_macro_assignment(uschar *s)
539 {
540 uschar name[64];
541 int namelen = 0;
542 BOOL redef = FALSE;
543 macro_item *m;
544 macro_item *mlast = NULL;
545
546 while (isalnum(*s) || *s == '_')
547 {
548 if (namelen >= sizeof(name) - 1)
549 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
550 "macro name too long (maximum is " SIZE_T_FMT " characters)", sizeof(name) - 1);
551 name[namelen++] = *s++;
552 }
553 name[namelen] = 0;
554
555 while (isspace(*s)) s++;
556 if (*s++ != '=')
557 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "malformed macro definition");
558
559 if (*s == '=')
560 {
561 redef = TRUE;
562 s++;
563 }
564 while (isspace(*s)) s++;
565
566 /* If an existing macro of the same name was defined on the command line, we
567 just skip this definition. It's an error to attempt to redefine a macro without
568 redef set to TRUE, or to redefine a macro when it hasn't been defined earlier.
569 It is also an error to define a macro whose name begins with the name of a
570 previously defined macro. Note: it is documented that the other way round
571 works. */
572
573 for (m = macros; m != NULL; m = m->next)
574 {
575 int len = Ustrlen(m->name);
576
577 if (Ustrcmp(m->name, name) == 0)
578 {
579 if (!m->command_line && !redef)
580 log_write(0, LOG_CONFIG|LOG_PANIC_DIE, "macro \"%s\" is already "
581 "defined (use \"==\" if you want to redefine it", name);
582 break;
583 }
584
585 if (len < namelen && Ustrstr(name, m->name) != NULL)
586 log_write(0, LOG_CONFIG|LOG_PANIC_DIE, "\"%s\" cannot be defined as "
587 "a macro because previously defined macro \"%s\" is a substring",
588 name, m->name);
589
590 /* We cannot have this test, because it is documented that a substring
591 macro is permitted (there is even an example).
592 *
593 * if (len > namelen && Ustrstr(m->name, name) != NULL)
594 * log_write(0, LOG_CONFIG|LOG_PANIC_DIE, "\"%s\" cannot be defined as "
595 * "a macro because it is a substring of previously defined macro \"%s\"",
596 * name, m->name);
597 */
598
599 mlast = m;
600 }
601
602 /* Check for an overriding command-line definition. */
603
604 if (m != NULL && m->command_line) return;
605
606 /* Redefinition must refer to an existing macro. */
607
608 if (redef)
609 {
610 if (m == NULL)
611 log_write(0, LOG_CONFIG|LOG_PANIC_DIE, "can't redefine an undefined macro "
612 "\"%s\"", name);
613 }
614
615 /* We have a new definition. The macro_item structure includes a final vector
616 called "name" which is one byte long. Thus, adding "namelen" gives us enough
617 room to store the "name" string. */
618
619 else
620 {
621 m = store_get(sizeof(macro_item) + namelen);
622 if (macros == NULL) macros = m; else mlast->next = m;
623 Ustrncpy(m->name, name, namelen);
624 m->name[namelen] = 0;
625 m->next = NULL;
626 m->command_line = FALSE;
627 }
628
629 /* Set the value of the new or redefined macro */
630
631 m->replacement = string_copy(s);
632 }
633
634
635
636
637
638 /*************************************************
639 * Read configuration line *
640 *************************************************/
641
642 /* A logical line of text is read from the configuration file into the big
643 buffer, taking account of macros, .includes, and continuations. The size of
644 big_buffer is increased if necessary. The count of configuration lines is
645 maintained. Physical input lines starting with # (ignoring leading white space,
646 and after macro replacement) and empty logical lines are always ignored.
647 Leading and trailing spaces are removed.
648
649 If we hit a line of the form "begin xxxx", the xxxx is placed in the
650 next_section vector, and the function returns NULL, indicating the end of a
651 configuration section. On end-of-file, NULL is returned with next_section
652 empty.
653
654 Arguments: none
655
656 Returns: a pointer to the first non-blank in the line,
657 or NULL if eof or end of section is reached
658 */
659
660 static uschar *
661 get_config_line(void)
662 {
663 int startoffset = 0; /* To first non-blank char in logical line */
664 int len = 0; /* Of logical line so far */
665 int newlen;
666 uschar *s, *ss;
667 macro_item *m;
668 BOOL macro_found;
669
670 /* Loop for handling continuation lines, skipping comments, and dealing with
671 .include files. */
672
673 for (;;)
674 {
675 if (Ufgets(big_buffer+len, big_buffer_size-len, config_file) == NULL)
676 {
677 if (config_file_stack != NULL) /* EOF inside .include */
678 {
679 (void)fclose(config_file);
680 config_file = config_file_stack->file;
681 config_filename = config_file_stack->filename;
682 config_lineno = config_file_stack->lineno;
683 config_file_stack = config_file_stack->next;
684 continue;
685 }
686
687 /* EOF at top level */
688
689 if (cstate_stack_ptr >= 0)
690 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
691 "Unexpected end of configuration file: .endif missing");
692
693 if (len != 0) break; /* EOF after continuation */
694 next_section[0] = 0; /* EOF at start of logical line */
695 return NULL;
696 }
697
698 config_lineno++;
699 newlen = len + Ustrlen(big_buffer + len);
700
701 /* Handle pathologically long physical lines - yes, it did happen - by
702 extending big_buffer at this point. The code also copes with very long
703 logical lines. */
704
705 while (newlen == big_buffer_size - 1 && big_buffer[newlen - 1] != '\n')
706 {
707 uschar *newbuffer;
708 big_buffer_size += BIG_BUFFER_SIZE;
709 newbuffer = store_malloc(big_buffer_size);
710
711 /* This use of strcpy is OK because we know that the string in the old
712 buffer is shorter than the new buffer. */
713
714 Ustrcpy(newbuffer, big_buffer);
715 store_free(big_buffer);
716 big_buffer = newbuffer;
717 if (Ufgets(big_buffer+newlen, big_buffer_size-newlen, config_file) == NULL)
718 break;
719 newlen += Ustrlen(big_buffer + newlen);
720 }
721
722 /* Find the true start of the physical line - leading spaces are always
723 ignored. */
724
725 ss = big_buffer + len;
726 while (isspace(*ss)) ss++;
727
728 /* Process the physical line for macros. If this is the start of the logical
729 line, skip over initial text at the start of the line if it starts with an
730 upper case character followed by a sequence of name characters and an equals
731 sign, because that is the definition of a new macro, and we don't do
732 replacement therein. */
733
734 s = ss;
735 if (len == 0 && isupper(*s))
736 {
737 while (isalnum(*s) || *s == '_') s++;
738 while (isspace(*s)) s++;
739 if (*s != '=') s = ss; /* Not a macro definition */
740 }
741
742 /* For each defined macro, scan the line (from after XXX= if present),
743 replacing all occurrences of the macro. */
744
745 macro_found = FALSE;
746 for (m = macros; m != NULL; m = m->next)
747 {
748 uschar *p, *pp;
749 uschar *t = s;
750
751 while ((p = Ustrstr(t, m->name)) != NULL)
752 {
753 int moveby;
754 int namelen = Ustrlen(m->name);
755 int replen = Ustrlen(m->replacement);
756
757 /* Expand the buffer if necessary */
758
759 while (newlen - namelen + replen + 1 > big_buffer_size)
760 {
761 int newsize = big_buffer_size + BIG_BUFFER_SIZE;
762 uschar *newbuffer = store_malloc(newsize);
763 memcpy(newbuffer, big_buffer, newlen + 1);
764 p = newbuffer + (p - big_buffer);
765 s = newbuffer + (s - big_buffer);
766 ss = newbuffer + (ss - big_buffer);
767 t = newbuffer + (t - big_buffer);
768 big_buffer_size = newsize;
769 store_free(big_buffer);
770 big_buffer = newbuffer;
771 }
772
773 /* Shuffle the remaining characters up or down in the buffer before
774 copying in the replacement text. Don't rescan the replacement for this
775 same macro. */
776
777 pp = p + namelen;
778 moveby = replen - namelen;
779 if (moveby != 0)
780 {
781 memmove(p + replen, pp, (big_buffer + newlen) - pp + 1);
782 newlen += moveby;
783 }
784 Ustrncpy(p, m->replacement, replen);
785 t = p + replen;
786 macro_found = TRUE;
787 }
788 }
789
790 /* An empty macro replacement at the start of a line could mean that ss no
791 longer points to the first non-blank character. */
792
793 while (isspace(*ss)) ss++;
794
795 /* Check for comment lines - these are physical lines. */
796
797 if (*ss == '#') continue;
798
799 /* Handle conditionals, which are also applied to physical lines. Conditions
800 are of the form ".ifdef ANYTEXT" and are treated as true if any macro
801 expansion occured on the rest of the line. A preliminary test for the leading
802 '.' saves effort on most lines. */
803
804 if (*ss == '.')
805 {
806 int i;
807
808 /* Search the list of conditional directives */
809
810 for (i = 0; i < cond_list_size; i++)
811 {
812 int n;
813 cond_item *c = cond_list+i;
814 if (Ustrncmp(ss+1, c->name, c->namelen) != 0) continue;
815
816 /* The following character must be white space or end of string */
817
818 n = ss[1 + c->namelen];
819 if (n != ' ' && n != 't' && n != '\n' && n != 0) break;
820
821 /* .ifdef and .ifndef push the current state onto the stack, then set
822 a new one from the table. Stack overflow is an error */
823
824 if (c->pushpop > 0)
825 {
826 if (cstate_stack_ptr >= CSTATE_STACK_SIZE - 1)
827 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
828 ".%s nested too deeply", c->name);
829 cstate_stack[++cstate_stack_ptr] = cstate;
830 cstate = next_cstate[cstate][macro_found? c->action1 : c->action2];
831 }
832
833 /* For any of the others, stack underflow is an error. The next state
834 comes either from the stack (.endif) or from the table. */
835
836 else
837 {
838 if (cstate_stack_ptr < 0)
839 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
840 ".%s without matching .ifdef", c->name);
841 cstate = (c->pushpop < 0)? cstate_stack[cstate_stack_ptr--] :
842 next_cstate[cstate][macro_found? c->action1 : c->action2];
843 }
844
845 /* Having dealt with a directive, break the loop */
846
847 break;
848 }
849
850 /* If we have handled a conditional directive, continue with the next
851 physical line. Otherwise, fall through. */
852
853 if (i < cond_list_size) continue;
854 }
855
856 /* If the conditional state is not 0 (actively using these lines), ignore
857 this input line. */
858
859 if (cstate != 0) continue; /* Conditional skip */
860
861 /* Handle .include lines - these are also physical lines. */
862
863 if (Ustrncmp(ss, ".include", 8) == 0 &&
864 (isspace(ss[8]) ||
865 (Ustrncmp(ss+8, "_if_exists", 10) == 0 && isspace(ss[18]))))
866 {
867 uschar *t;
868 int include_if_exists = isspace(ss[8])? 0 : 10;
869 config_file_item *save;
870 struct stat statbuf;
871
872 ss += 9 + include_if_exists;
873 while (isspace(*ss)) ss++;
874 t = ss + Ustrlen(ss);
875 while (t > ss && isspace(t[-1])) t--;
876 if (*ss == '\"' && t[-1] == '\"')
877 {
878 ss++;
879 t--;
880 }
881 *t = 0;
882
883 if (*ss != '/')
884 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, ".include specifies a non-"
885 "absolute path \"%s\"", ss);
886
887 if (include_if_exists != 0 && (Ustat(ss, &statbuf) != 0)) continue;
888
889 save = store_get(sizeof(config_file_item));
890 save->next = config_file_stack;
891 config_file_stack = save;
892 save->file = config_file;
893 save->filename = config_filename;
894 save->lineno = config_lineno;
895
896 config_file = Ufopen(ss, "rb");
897 if (config_file == NULL)
898 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "failed to open included "
899 "configuration file %s", ss);
900 config_filename = string_copy(ss);
901 config_lineno = 0;
902 continue;
903 }
904
905 /* If this is the start of the logical line, remember where the non-blank
906 data starts. Otherwise shuffle down continuation lines to remove leading
907 white space. */
908
909 if (len == 0)
910 startoffset = ss - big_buffer;
911 else
912 {
913 s = big_buffer + len;
914 if (ss > s)
915 {
916 memmove(s, ss, (newlen - len) - (ss - s) + 1);
917 newlen -= ss - s;
918 }
919 }
920
921 /* Accept the new addition to the line. Remove trailing white space. */
922
923 len = newlen;
924 while (len > 0 && isspace(big_buffer[len-1])) len--;
925 big_buffer[len] = 0;
926
927 /* We are done if the line does not end in backslash and contains some data.
928 Empty logical lines are ignored. For continuations, remove the backslash and
929 go round the loop to read the continuation line. */
930
931 if (len > 0)
932 {
933 if (big_buffer[len-1] != '\\') break; /* End of logical line */
934 big_buffer[--len] = 0; /* Remove backslash */
935 }
936 } /* Loop for reading multiple physical lines */
937
938 /* We now have a logical line. Test for the end of a configuration section (or,
939 more accurately, for the start of the next section). Place the name of the next
940 section in next_section, and return NULL. If the name given is longer than
941 next_section, truncate it. It will be unrecognized later, because all the known
942 section names do fit. Leave space for pluralizing. */
943
944 s = big_buffer + startoffset; /* First non-space character */
945 if (strncmpic(s, US"begin ", 6) == 0)
946 {
947 s += 6;
948 while (isspace(*s)) s++;
949 if (big_buffer + len - s > sizeof(next_section) - 2)
950 s[sizeof(next_section) - 2] = 0;
951 Ustrcpy(next_section, s);
952 return NULL;
953 }
954
955 /* Return the first non-blank character. */
956
957 return s;
958 }
959
960
961
962 /*************************************************
963 * Read a name *
964 *************************************************/
965
966 /* The yield is the pointer to the next uschar. Names longer than the
967 output space are silently truncated. This function is also used from acl.c when
968 parsing ACLs.
969
970 Arguments:
971 name where to put the name
972 len length of name
973 s input pointer
974
975 Returns: new input pointer
976 */
977
978 uschar *
979 readconf_readname(uschar *name, int len, uschar *s)
980 {
981 int p = 0;
982 while (isspace(*s)) s++;
983 if (isalpha(*s))
984 {
985 while (isalnum(*s) || *s == '_')
986 {
987 if (p < len-1) name[p++] = *s;
988 s++;
989 }
990 }
991 name[p] = 0;
992 while (isspace(*s)) s++;
993 return s;
994 }
995
996
997
998
999 /*************************************************
1000 * Read a time value *
1001 *************************************************/
1002
1003 /* This function is also called from outside, to read argument
1004 time values. The format of a time value is:
1005
1006 [<n>w][<n>d][<n>h][<n>m][<n>s]
1007
1008 as long as at least one is present. If a format error is encountered,
1009 return a negative value. The value must be terminated by the given
1010 terminator.
1011
1012 Arguments:
1013 s input pointer
1014 terminator required terminating character
1015 return_msec if TRUE, allow fractional seconds and return milliseconds
1016
1017 Returns: the time value, or -1 on syntax error
1018 value is seconds if return_msec is FALSE
1019 value is milliseconds if return_msec is TRUE
1020 */
1021
1022 int
1023 readconf_readtime(uschar *s, int terminator, BOOL return_msec)
1024 {
1025 int yield = 0;
1026 for (;;)
1027 {
1028 int value, count;
1029 double fraction;
1030
1031 if (!isdigit(*s)) return -1;
1032 (void)sscanf(CS s, "%d%n", &value, &count);
1033 s += count;
1034
1035 switch (*s)
1036 {
1037 case 'w': value *= 7;
1038 case 'd': value *= 24;
1039 case 'h': value *= 60;
1040 case 'm': value *= 60;
1041 case 's': s++;
1042 break;
1043
1044 case '.':
1045 if (!return_msec) return -1;
1046 (void)sscanf(CS s, "%lf%n", &fraction, &count);
1047 s += count;
1048 if (*s++ != 's') return -1;
1049 yield += (int)(fraction * 1000.0);
1050 break;
1051
1052 default: return -1;
1053 }
1054
1055 if (return_msec) value *= 1000;
1056 yield += value;
1057 if (*s == terminator) return yield;
1058 }
1059 /* Control never reaches here. */
1060 }
1061
1062
1063
1064 /*************************************************
1065 * Read a fixed point value *
1066 *************************************************/
1067
1068 /* The value is returned *1000
1069
1070 Arguments:
1071 s input pointer
1072 terminator required terminator
1073
1074 Returns: the value, or -1 on error
1075 */
1076
1077 static int
1078 readconf_readfixed(uschar *s, int terminator)
1079 {
1080 int yield = 0;
1081 int value, count;
1082 if (!isdigit(*s)) return -1;
1083 (void)sscanf(CS s, "%d%n", &value, &count);
1084 s += count;
1085 yield = value * 1000;
1086 if (*s == '.')
1087 {
1088 int m = 100;
1089 while (isdigit((*(++s))))
1090 {
1091 yield += (*s - '0') * m;
1092 m /= 10;
1093 }
1094 }
1095
1096 return (*s == terminator)? yield : (-1);
1097 }
1098
1099
1100
1101 /*************************************************
1102 * Find option in list *
1103 *************************************************/
1104
1105 /* The lists are always in order, so binary chop can be used.
1106
1107 Arguments:
1108 name the option name to search for
1109 ol the first entry in the option list
1110 last one more than the offset of the last entry in the option list
1111
1112 Returns: pointer to an option entry, or NULL if not found
1113 */
1114
1115 static optionlist *
1116 find_option(uschar *name, optionlist *ol, int last)
1117 {
1118 int first = 0;
1119 while (last > first)
1120 {
1121 int middle = (first + last)/2;
1122 int c = Ustrcmp(name, ol[middle].name);
1123 if (c == 0) return ol + middle;
1124 else if (c > 0) first = middle + 1;
1125 else last = middle;
1126 }
1127 return NULL;
1128 }
1129
1130
1131
1132 /*************************************************
1133 * Find a set flag in option list *
1134 *************************************************/
1135
1136 /* Because some versions of Unix make no restrictions on the values of uids and
1137 gids (even negative ones), we cannot represent "unset" by a special value.
1138 There is therefore a separate boolean variable for each one indicating whether
1139 a value is set or not. This function returns a pointer to the boolean, given
1140 the original option name. It is a major disaster if the flag cannot be found.
1141
1142 Arguments:
1143 name the name of the uid or gid option
1144 oltop points to the start of the relevant option list
1145 last one more than the offset of the last item in the option list
1146 data_block NULL when reading main options => data values in the option
1147 list are absolute addresses; otherwise they are byte offsets
1148 in data_block (used for driver options)
1149
1150 Returns: a pointer to the boolean flag.
1151 */
1152
1153 static BOOL *
1154 get_set_flag(uschar *name, optionlist *oltop, int last, void *data_block)
1155 {
1156 optionlist *ol;
1157 uschar name2[64];
1158 sprintf(CS name2, "*set_%.50s", name);
1159 ol = find_option(name2, oltop, last);
1160 if (ol == NULL) log_write(0, LOG_MAIN|LOG_PANIC_DIE,
1161 "Exim internal error: missing set flag for %s", name);
1162 return (data_block == NULL)? (BOOL *)(ol->value) :
1163 (BOOL *)((uschar *)data_block + (long int)(ol->value));
1164 }
1165
1166
1167
1168
1169 /*************************************************
1170 * Output extra characters message and die *
1171 *************************************************/
1172
1173 /* Called when an option line has junk on the end. Sometimes this is because
1174 the sysadmin thinks comments are permitted.
1175
1176 Arguments:
1177 s points to the extra characters
1178 t1..t3 strings to insert in the log message
1179
1180 Returns: doesn't return; dies
1181 */
1182
1183 static void
1184 extra_chars_error(uschar *s, uschar *t1, uschar *t2, uschar *t3)
1185 {
1186 uschar *comment = US"";
1187 if (*s == '#') comment = US" (# is comment only at line start)";
1188 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1189 "extra characters follow %s%s%s%s", t1, t2, t3, comment);
1190 }
1191
1192
1193
1194 /*************************************************
1195 * Read rewrite information *
1196 *************************************************/
1197
1198 /* Each line of rewrite information contains:
1199
1200 . A complete address in the form user@domain, possibly with
1201 leading * for each part; or alternatively, a regex.
1202
1203 . A replacement string (which will be expanded).
1204
1205 . An optional sequence of one-letter flags, indicating which
1206 headers etc. to apply this rule to.
1207
1208 All this is decoded and placed into a control block. The OR of the flags is
1209 maintained in a common word.
1210
1211 Arguments:
1212 p points to the string that makes up the rule
1213 existflags points to the overall flag word
1214 isglobal TRUE if reading global rewrite rules
1215
1216 Returns: the control block for the parsed rule.
1217 */
1218
1219 static rewrite_rule *
1220 readconf_one_rewrite(uschar *p, int *existflags, BOOL isglobal)
1221 {
1222 rewrite_rule *next = store_get(sizeof(rewrite_rule));
1223
1224 next->next = NULL;
1225 next->key = string_dequote(&p);
1226
1227 while (isspace(*p)) p++;
1228 if (*p == 0)
1229 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1230 "missing rewrite replacement string");
1231
1232 next->flags = 0;
1233 next->replacement = string_dequote(&p);
1234
1235 while (*p != 0) switch (*p++)
1236 {
1237 case ' ': case '\t': break;
1238
1239 case 'q': next->flags |= rewrite_quit; break;
1240 case 'w': next->flags |= rewrite_whole; break;
1241
1242 case 'h': next->flags |= rewrite_all_headers; break;
1243 case 's': next->flags |= rewrite_sender; break;
1244 case 'f': next->flags |= rewrite_from; break;
1245 case 't': next->flags |= rewrite_to; break;
1246 case 'c': next->flags |= rewrite_cc; break;
1247 case 'b': next->flags |= rewrite_bcc; break;
1248 case 'r': next->flags |= rewrite_replyto; break;
1249
1250 case 'E': next->flags |= rewrite_all_envelope; break;
1251 case 'F': next->flags |= rewrite_envfrom; break;
1252 case 'T': next->flags |= rewrite_envto; break;
1253
1254 case 'Q': next->flags |= rewrite_qualify; break;
1255 case 'R': next->flags |= rewrite_repeat; break;
1256
1257 case 'S':
1258 next->flags |= rewrite_smtp;
1259 if (next->key[0] != '^' && Ustrncmp(next->key, "\\N^", 3) != 0)
1260 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1261 "rewrite rule has the S flag but is not a regular expression");
1262 break;
1263
1264 default:
1265 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1266 "unknown rewrite flag character '%c' "
1267 "(could be missing quotes round replacement item)", p[-1]);
1268 break;
1269 }
1270
1271 /* If no action flags are set, set all the "normal" rewrites. */
1272
1273 if ((next->flags & (rewrite_all | rewrite_smtp)) == 0)
1274 next->flags |= isglobal? rewrite_all : rewrite_all_headers;
1275
1276 /* Remember which exist, for optimization, and return the rule */
1277
1278 *existflags |= next->flags;
1279 return next;
1280 }
1281
1282
1283
1284
1285 /*************************************************
1286 * Read global rewrite information *
1287 *************************************************/
1288
1289 /* Each line is a single rewrite rule; it is parsed into a control block
1290 by readconf_one_rewrite(), and its flags are ORed into the global flag
1291 word rewrite_existflags. */
1292
1293 void
1294 readconf_rewrites(void)
1295 {
1296 rewrite_rule **chain = &global_rewrite_rules;
1297 uschar *p;
1298
1299 while ((p = get_config_line()) != NULL)
1300 {
1301 rewrite_rule *next = readconf_one_rewrite(p, &rewrite_existflags, TRUE);
1302 *chain = next;
1303 chain = &(next->next);
1304 }
1305 }
1306
1307
1308
1309 /*************************************************
1310 * Read a string *
1311 *************************************************/
1312
1313 /* Strings are read into the normal store pool. As long we aren't too
1314 near the end of the current block, the string will just use what is necessary
1315 on the top of the stacking pool, because string_cat() uses the extension
1316 mechanism.
1317
1318 Argument:
1319 s the rest of the input line
1320 name the option name (for errors)
1321
1322 Returns: pointer to the string
1323 */
1324
1325 static uschar *
1326 read_string(uschar *s, uschar *name)
1327 {
1328 uschar *yield;
1329 uschar *ss;
1330
1331 if (*s != '\"') return string_copy(s);
1332
1333 ss = s;
1334 yield = string_dequote(&s);
1335
1336 if (s == ss+1 || s[-1] != '\"')
1337 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1338 "missing quote at end of string value for %s", name);
1339
1340 if (*s != 0) extra_chars_error(s, US"string value for ", name, US"");
1341
1342 return yield;
1343 }
1344
1345
1346 /*************************************************
1347 * Handle option line *
1348 *************************************************/
1349
1350 /* This function is called from several places to process a line containing the
1351 setting of an option. The first argument is the line to be decoded; it has been
1352 checked not to be empty and not to start with '#'. Trailing newlines and white
1353 space have been removed. The second argument is a pointer to the list of
1354 variable names that are to be recognized, together with their types and
1355 locations, and the third argument gives the number of entries in the list.
1356
1357 The fourth argument is a pointer to a data block. If it is NULL, then the data
1358 values in the options list are absolute addresses. Otherwise, they are byte
1359 offsets in the data block.
1360
1361 String option data may continue onto several lines; this function reads further
1362 data from config_file if necessary.
1363
1364 The yield of this function is normally zero. If a string continues onto
1365 multiple lines, then the data value is permitted to be followed by a comma
1366 or a semicolon (for use in drivers) and the yield is that character.
1367
1368 Arguments:
1369 buffer contains the configuration line to be handled
1370 oltop points to the start of the relevant option list
1371 last one more than the offset of the last item in the option list
1372 data_block NULL when reading main options => data values in the option
1373 list are absolute addresses; otherwise they are byte offsets
1374 in data_block when they have opt_public set; otherwise
1375 they are byte offsets in data_block->options_block.
1376 unknown_txt format string to use in panic message for unknown option;
1377 must contain %s for option name
1378 if given as NULL, don't panic on unknown option
1379
1380 Returns: TRUE if an option was read successfully,
1381 FALSE false for an unknown option if unknown_txt == NULL,
1382 otherwise panic and die on an unknown option
1383 */
1384
1385 static BOOL
1386 readconf_handle_option(uschar *buffer, optionlist *oltop, int last,
1387 void *data_block, uschar *unknown_txt)
1388 {
1389 int ptr = 0;
1390 int offset = 0;
1391 int n, count, type, value;
1392 int issecure = 0;
1393 uid_t uid;
1394 gid_t gid;
1395 BOOL boolvalue = TRUE;
1396 BOOL freesptr = TRUE;
1397 optionlist *ol, *ol2;
1398 struct passwd *pw;
1399 void *reset_point;
1400 int intbase = 0;
1401 uschar *inttype = US"";
1402 uschar *sptr;
1403 uschar *s = buffer;
1404 uschar *saved_condition, *strtemp;
1405 uschar **str_target;
1406 uschar name[64];
1407 uschar name2[64];
1408
1409 /* There may be leading spaces; thereafter, we expect an option name starting
1410 with a letter. */
1411
1412 while (isspace(*s)) s++;
1413 if (!isalpha(*s))
1414 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "option setting expected: %s", s);
1415
1416 /* Read the name of the option, and skip any subsequent white space. If
1417 it turns out that what we read was "hide", set the flag indicating that
1418 this is a secure option, and loop to read the next word. */
1419
1420 for (n = 0; n < 2; n++)
1421 {
1422 while (isalnum(*s) || *s == '_')
1423 {
1424 if (ptr < sizeof(name)-1) name[ptr++] = *s;
1425 s++;
1426 }
1427 name[ptr] = 0;
1428 while (isspace(*s)) s++;
1429 if (Ustrcmp(name, "hide") != 0) break;
1430 issecure = opt_secure;
1431 ptr = 0;
1432 }
1433
1434 /* Deal with "no_" or "not_" here for booleans */
1435
1436 if (Ustrncmp(name, "no_", 3) == 0)
1437 {
1438 boolvalue = FALSE;
1439 offset = 3;
1440 }
1441
1442 if (Ustrncmp(name, "not_", 4) == 0)
1443 {
1444 boolvalue = FALSE;
1445 offset = 4;
1446 }
1447
1448 /* Search the list for the given name. A non-existent name, or an option that
1449 is set twice, is a disaster. */
1450
1451 ol = find_option(name + offset, oltop, last);
1452
1453 if (ol == NULL)
1454 {
1455 if (unknown_txt == NULL) return FALSE;
1456 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, CS unknown_txt, name);
1457 }
1458
1459 if ((ol->type & opt_set) && !(ol->type & (opt_rep_con | opt_rep_str)))
1460 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1461 "\"%s\" option set for the second time", name);
1462
1463 ol->type |= opt_set | issecure;
1464 type = ol->type & opt_mask;
1465
1466 /* Types with data values must be followed by '='; the "no[t]_" prefix
1467 applies only to boolean values. */
1468
1469 if (type < opt_bool || type > opt_bool_last)
1470 {
1471 if (offset != 0)
1472 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1473 "negation prefix applied to a non-boolean option");
1474 if (*s == 0)
1475 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1476 "unexpected end of line (data missing) after %s", name);
1477 if (*s != '=')
1478 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "missing \"=\" after %s", name);
1479 }
1480
1481 /* If a boolean wasn't preceded by "no[t]_" it can be followed by = and
1482 true/false/yes/no, or, in the case of opt_expanded_bool, a general string that
1483 ultimately expands to one of those values. */
1484
1485 else if (*s != 0 && (offset != 0 || *s != '='))
1486 extra_chars_error(s, US"boolean option ", name, US"");
1487
1488 /* Skip white space after = */
1489
1490 if (*s == '=') while (isspace((*(++s))));
1491
1492 /* If there is a data block and the opt_public flag is not set, change
1493 the data block pointer to the private options block. */
1494
1495 if (data_block != NULL && (ol->type & opt_public) == 0)
1496 data_block = (void *)(((driver_instance *)data_block)->options_block);
1497
1498 /* Now get the data according to the type. */
1499
1500 switch (type)
1501 {
1502 /* If a string value is not enclosed in quotes, it consists of
1503 the rest of the current line, verbatim. Otherwise, string escapes
1504 are processed.
1505
1506 A transport is specified as a string, which is then looked up in the
1507 list of transports. A search type is specified as one of a number of
1508 known strings.
1509
1510 A set or rewrite rules for a driver is specified as a string, which is
1511 then parsed into a suitable chain of control blocks.
1512
1513 Uids and gids are specified as strings which are then looked up in the
1514 passwd file. Lists of uids and gids are similarly specified as colon-
1515 separated strings. */
1516
1517 case opt_stringptr:
1518 case opt_uid:
1519 case opt_gid:
1520 case opt_expand_uid:
1521 case opt_expand_gid:
1522 case opt_uidlist:
1523 case opt_gidlist:
1524 case opt_rewrite:
1525
1526 reset_point = sptr = read_string(s, name);
1527
1528 /* Having read a string, we now have several different ways of using it,
1529 depending on the data type, so do another switch. If keeping the actual
1530 string is not required (because it is interpreted), freesptr is set TRUE,
1531 and at the end we reset the pool. */
1532
1533 switch (type)
1534 {
1535 /* If this was a string, set the variable to point to the new string,
1536 and set the flag so its store isn't reclaimed. If it was a list of rewrite
1537 rules, we still keep the string (for printing), and parse the rules into a
1538 control block and flags word. */
1539
1540 case opt_stringptr:
1541 if (data_block == NULL)
1542 str_target = (uschar **)(ol->value);
1543 else
1544 str_target = (uschar **)((uschar *)data_block + (long int)(ol->value));
1545 if (ol->type & opt_rep_con)
1546 {
1547 /* We already have a condition, we're conducting a crude hack to let
1548 multiple condition rules be chained together, despite storing them in
1549 text form. */
1550 saved_condition = *str_target;
1551 strtemp = string_sprintf("${if and{{bool_lax{%s}}{bool_lax{%s}}}}",
1552 saved_condition, sptr);
1553 *str_target = string_copy_malloc(strtemp);
1554 /* TODO(pdp): there is a memory leak here and just below
1555 when we set 3 or more conditions; I still don't
1556 understand the store mechanism enough to know
1557 what's the safe way to free content from an earlier store.
1558 AFAICT, stores stack, so freeing an early stored item also stores
1559 all data alloc'd after it. If we knew conditions were adjacent,
1560 we could survive that, but we don't. So I *think* we need to take
1561 another bit from opt_type to indicate "malloced"; this seems like
1562 quite a hack, especially for this one case. It also means that
1563 we can't ever reclaim the store from the *first* condition.
1564
1565 Because we only do this once, near process start-up, I'm prepared to
1566 let this slide for the time being, even though it rankles. */
1567 }
1568 else if (ol->type & opt_rep_str)
1569 {
1570 uschar sep = Ustrncmp(name, "headers_add", 11)==0 ? '\n' : ':';
1571 uschar * cp;
1572
1573 /* Strip trailing whitespace and seperators */
1574 for (cp = sptr + Ustrlen(sptr) - 1;
1575 cp >= sptr && (*cp == '\n' || *cp == '\t' || *cp == ' ' || *cp == sep);
1576 cp--) *cp = '\0';
1577
1578 if (cp >= sptr)
1579 *str_target = string_copy_malloc(
1580 *str_target ? string_sprintf("%s%c%s", *str_target, sep, sptr)
1581 : sptr);
1582 }
1583 else
1584 {
1585 *str_target = sptr;
1586 freesptr = FALSE;
1587 }
1588 break;
1589
1590 case opt_rewrite:
1591 if (data_block == NULL)
1592 *((uschar **)(ol->value)) = sptr;
1593 else
1594 *((uschar **)((uschar *)data_block + (long int)(ol->value))) = sptr;
1595 freesptr = FALSE;
1596 if (type == opt_rewrite)
1597 {
1598 int sep = 0;
1599 int *flagptr;
1600 uschar *p = sptr;
1601 rewrite_rule **chain;
1602 optionlist *ol3;
1603
1604 sprintf(CS name2, "*%.50s_rules", name);
1605 ol2 = find_option(name2, oltop, last);
1606 sprintf(CS name2, "*%.50s_flags", name);
1607 ol3 = find_option(name2, oltop, last);
1608
1609 if (ol2 == NULL || ol3 == NULL)
1610 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1611 "rewrite rules not available for driver");
1612
1613 if (data_block == NULL)
1614 {
1615 chain = (rewrite_rule **)(ol2->value);
1616 flagptr = (int *)(ol3->value);
1617 }
1618 else
1619 {
1620 chain = (rewrite_rule **)((uschar *)data_block + (long int)(ol2->value));
1621 flagptr = (int *)((uschar *)data_block + (long int)(ol3->value));
1622 }
1623
1624 while ((p = string_nextinlist(&sptr, &sep, big_buffer, BIG_BUFFER_SIZE))
1625 != NULL)
1626 {
1627 rewrite_rule *next = readconf_one_rewrite(p, flagptr, FALSE);
1628 *chain = next;
1629 chain = &(next->next);
1630 }
1631
1632 if ((*flagptr & (rewrite_all_envelope | rewrite_smtp)) != 0)
1633 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "rewrite rule specifies a "
1634 "non-header rewrite - not allowed at transport time -");
1635 }
1636 break;
1637
1638 /* If it was an expanded uid, see if there is any expansion to be
1639 done by checking for the presence of a $ character. If there is, save it
1640 in the corresponding *expand_user option field. Otherwise, fall through
1641 to treat it as a fixed uid. Ensure mutual exclusivity of the two kinds
1642 of data. */
1643
1644 case opt_expand_uid:
1645 sprintf(CS name2, "*expand_%.50s", name);
1646 ol2 = find_option(name2, oltop, last);
1647 if (ol2 != NULL)
1648 {
1649 uschar *ss = (Ustrchr(sptr, '$') != NULL)? sptr : NULL;
1650
1651 if (data_block == NULL)
1652 *((uschar **)(ol2->value)) = ss;
1653 else
1654 *((uschar **)((uschar *)data_block + (long int)(ol2->value))) = ss;
1655
1656 if (ss != NULL)
1657 {
1658 *(get_set_flag(name, oltop, last, data_block)) = FALSE;
1659 freesptr = FALSE;
1660 break;
1661 }
1662 }
1663
1664 /* Look up a fixed uid, and also make use of the corresponding gid
1665 if a passwd entry is returned and the gid has not been set. */
1666
1667 case opt_uid:
1668 if (!route_finduser(sptr, &pw, &uid))
1669 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "user %s was not found", sptr);
1670 if (data_block == NULL)
1671 *((uid_t *)(ol->value)) = uid;
1672 else
1673 *((uid_t *)((uschar *)data_block + (long int)(ol->value))) = uid;
1674
1675 /* Set the flag indicating a fixed value is set */
1676
1677 *(get_set_flag(name, oltop, last, data_block)) = TRUE;
1678
1679 /* Handle matching gid if we have a passwd entry: done by finding the
1680 same name with terminating "user" changed to "group"; if not found,
1681 ignore. Also ignore if the value is already set. */
1682
1683 if (pw == NULL) break;
1684 Ustrcpy(name+Ustrlen(name)-4, "group");
1685 ol2 = find_option(name, oltop, last);
1686 if (ol2 != NULL && ((ol2->type & opt_mask) == opt_gid ||
1687 (ol2->type & opt_mask) == opt_expand_gid))
1688 {
1689 BOOL *set_flag = get_set_flag(name, oltop, last, data_block);
1690 if (! *set_flag)
1691 {
1692 if (data_block == NULL)
1693 *((gid_t *)(ol2->value)) = pw->pw_gid;
1694 else
1695 *((gid_t *)((uschar *)data_block + (long int)(ol2->value))) = pw->pw_gid;
1696 *set_flag = TRUE;
1697 }
1698 }
1699 break;
1700
1701 /* If it was an expanded gid, see if there is any expansion to be
1702 done by checking for the presence of a $ character. If there is, save it
1703 in the corresponding *expand_user option field. Otherwise, fall through
1704 to treat it as a fixed gid. Ensure mutual exclusivity of the two kinds
1705 of data. */
1706
1707 case opt_expand_gid:
1708 sprintf(CS name2, "*expand_%.50s", name);
1709 ol2 = find_option(name2, oltop, last);
1710 if (ol2 != NULL)
1711 {
1712 uschar *ss = (Ustrchr(sptr, '$') != NULL)? sptr : NULL;
1713
1714 if (data_block == NULL)
1715 *((uschar **)(ol2->value)) = ss;
1716 else
1717 *((uschar **)((uschar *)data_block + (long int)(ol2->value))) = ss;
1718
1719 if (ss != NULL)
1720 {
1721 *(get_set_flag(name, oltop, last, data_block)) = FALSE;
1722 freesptr = FALSE;
1723 break;
1724 }
1725 }
1726
1727 /* Handle freestanding gid */
1728
1729 case opt_gid:
1730 if (!route_findgroup(sptr, &gid))
1731 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "group %s was not found", sptr);
1732 if (data_block == NULL)
1733 *((gid_t *)(ol->value)) = gid;
1734 else
1735 *((gid_t *)((uschar *)data_block + (long int)(ol->value))) = gid;
1736 *(get_set_flag(name, oltop, last, data_block)) = TRUE;
1737 break;
1738
1739 /* If it was a uid list, look up each individual entry, and build
1740 a vector of uids, with a count in the first element. Put the vector
1741 in malloc store so we can free the string. (We are reading into
1742 permanent store already.) */
1743
1744 case opt_uidlist:
1745 {
1746 int count = 1;
1747 uid_t *list;
1748 int ptr = 0;
1749 uschar *p;
1750 uschar *op = expand_string (sptr);
1751
1752 if (op == NULL)
1753 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "failed to expand %s: %s",
1754 name, expand_string_message);
1755
1756 p = op;
1757 if (*p != 0) count++;
1758 while (*p != 0) if (*p++ == ':' && *p != 0) count++;
1759 list = store_malloc(count*sizeof(uid_t));
1760 list[ptr++] = (uid_t)(count - 1);
1761
1762 if (data_block == NULL)
1763 *((uid_t **)(ol->value)) = list;
1764 else
1765 *((uid_t **)((uschar *)data_block + (long int)(ol->value))) = list;
1766
1767 p = op;
1768 while (count-- > 1)
1769 {
1770 int sep = 0;
1771 (void)string_nextinlist(&p, &sep, big_buffer, BIG_BUFFER_SIZE);
1772 if (!route_finduser(big_buffer, NULL, &uid))
1773 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "user %s was not found",
1774 big_buffer);
1775 list[ptr++] = uid;
1776 }
1777 }
1778 break;
1779
1780 /* If it was a gid list, look up each individual entry, and build
1781 a vector of gids, with a count in the first element. Put the vector
1782 in malloc store so we can free the string. (We are reading into permanent
1783 store already.) */
1784
1785 case opt_gidlist:
1786 {
1787 int count = 1;
1788 gid_t *list;
1789 int ptr = 0;
1790 uschar *p;
1791 uschar *op = expand_string (sptr);
1792
1793 if (op == NULL)
1794 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "failed to expand %s: %s",
1795 name, expand_string_message);
1796
1797 p = op;
1798 if (*p != 0) count++;
1799 while (*p != 0) if (*p++ == ':' && *p != 0) count++;
1800 list = store_malloc(count*sizeof(gid_t));
1801 list[ptr++] = (gid_t)(count - 1);
1802
1803 if (data_block == NULL)
1804 *((gid_t **)(ol->value)) = list;
1805 else
1806 *((gid_t **)((uschar *)data_block + (long int)(ol->value))) = list;
1807
1808 p = op;
1809 while (count-- > 1)
1810 {
1811 int sep = 0;
1812 (void)string_nextinlist(&p, &sep, big_buffer, BIG_BUFFER_SIZE);
1813 if (!route_findgroup(big_buffer, &gid))
1814 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "group %s was not found",
1815 big_buffer);
1816 list[ptr++] = gid;
1817 }
1818 }
1819 break;
1820 }
1821
1822 /* Release store if the value of the string doesn't need to be kept. */
1823
1824 if (freesptr) store_reset(reset_point);
1825 break;
1826
1827 /* Expanded boolean: if no characters follow, or if there are no dollar
1828 characters, this is a fixed-valued boolean, and we fall through. Otherwise,
1829 save the string for later expansion in the alternate place. */
1830
1831 case opt_expand_bool:
1832 if (*s != 0 && Ustrchr(s, '$') != 0)
1833 {
1834 sprintf(CS name2, "*expand_%.50s", name);
1835 ol2 = find_option(name2, oltop, last);
1836 if (ol2 != NULL)
1837 {
1838 reset_point = sptr = read_string(s, name);
1839 if (data_block == NULL)
1840 *((uschar **)(ol2->value)) = sptr;
1841 else
1842 *((uschar **)((uschar *)data_block + (long int)(ol2->value))) = sptr;
1843 freesptr = FALSE;
1844 break;
1845 }
1846 }
1847 /* Fall through */
1848
1849 /* Boolean: if no characters follow, the value is boolvalue. Otherwise
1850 look for yes/not/true/false. Some booleans are stored in a single bit in
1851 a single int. There's a special fudge for verify settings; without a suffix
1852 they set both xx_sender and xx_recipient. The table points to the sender
1853 value; search subsequently for the recipient. There's another special case:
1854 opt_bool_set also notes when a boolean has been set. */
1855
1856 case opt_bool:
1857 case opt_bit:
1858 case opt_bool_verify:
1859 case opt_bool_set:
1860 if (*s != 0)
1861 {
1862 s = readconf_readname(name2, 64, s);
1863 if (strcmpic(name2, US"true") == 0 || strcmpic(name2, US"yes") == 0)
1864 boolvalue = TRUE;
1865 else if (strcmpic(name2, US"false") == 0 || strcmpic(name2, US"no") == 0)
1866 boolvalue = FALSE;
1867 else log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1868 "\"%s\" is not a valid value for the \"%s\" option", name2, name);
1869 if (*s != 0) extra_chars_error(s, string_sprintf("\"%s\" ", name2),
1870 US"for boolean option ", name);
1871 }
1872
1873 /* Handle single-bit type. */
1874
1875 if (type == opt_bit)
1876 {
1877 int bit = 1 << ((ol->type >> 16) & 31);
1878 int *ptr = (data_block == NULL)?
1879 (int *)(ol->value) :
1880 (int *)((uschar *)data_block + (long int)ol->value);
1881 if (boolvalue) *ptr |= bit; else *ptr &= ~bit;
1882 break;
1883 }
1884
1885 /* Handle full BOOL types */
1886
1887 if (data_block == NULL)
1888 *((BOOL *)(ol->value)) = boolvalue;
1889 else
1890 *((BOOL *)((uschar *)data_block + (long int)(ol->value))) = boolvalue;
1891
1892 /* Verify fudge */
1893
1894 if (type == opt_bool_verify)
1895 {
1896 sprintf(CS name2, "%.50s_recipient", name + offset);
1897 ol2 = find_option(name2, oltop, last);
1898 if (ol2 != NULL)
1899 {
1900 if (data_block == NULL)
1901 *((BOOL *)(ol2->value)) = boolvalue;
1902 else
1903 *((BOOL *)((uschar *)data_block + (long int)(ol2->value))) = boolvalue;
1904 }
1905 }
1906
1907 /* Note that opt_bool_set type is set, if there is somewhere to do so */
1908
1909 else if (type == opt_bool_set)
1910 {
1911 sprintf(CS name2, "*set_%.50s", name + offset);
1912 ol2 = find_option(name2, oltop, last);
1913 if (ol2 != NULL)
1914 {
1915 if (data_block == NULL)
1916 *((BOOL *)(ol2->value)) = TRUE;
1917 else
1918 *((BOOL *)((uschar *)data_block + (long int)(ol2->value))) = TRUE;
1919 }
1920 }
1921 break;
1922
1923 /* Octal integer */
1924
1925 case opt_octint:
1926 intbase = 8;
1927 inttype = US"octal ";
1928
1929 /* Integer: a simple(ish) case; allow octal and hex formats, and
1930 suffixes K and M. The different types affect output, not input. */
1931
1932 case opt_mkint:
1933 case opt_int:
1934 {
1935 uschar *endptr;
1936 long int lvalue;
1937
1938 errno = 0;
1939 lvalue = strtol(CS s, CSS &endptr, intbase);
1940
1941 if (endptr == s)
1942 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "%sinteger expected for %s",
1943 inttype, name);
1944
1945 if (errno != ERANGE)
1946 {
1947 if (tolower(*endptr) == 'k')
1948 {
1949 if (lvalue > INT_MAX/1024 || lvalue < INT_MIN/1024) errno = ERANGE;
1950 else lvalue *= 1024;
1951 endptr++;
1952 }
1953 else if (tolower(*endptr) == 'm')
1954 {
1955 if (lvalue > INT_MAX/(1024*1024) || lvalue < INT_MIN/(1024*1024))
1956 errno = ERANGE;
1957 else lvalue *= 1024*1024;
1958 endptr++;
1959 }
1960 }
1961
1962 if (errno == ERANGE || lvalue > INT_MAX || lvalue < INT_MIN)
1963 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1964 "absolute value of integer \"%s\" is too large (overflow)", s);
1965
1966 while (isspace(*endptr)) endptr++;
1967 if (*endptr != 0)
1968 extra_chars_error(endptr, inttype, US"integer value for ", name);
1969
1970 value = (int)lvalue;
1971 }
1972
1973 if (data_block == NULL)
1974 *((int *)(ol->value)) = value;
1975 else
1976 *((int *)((uschar *)data_block + (long int)(ol->value))) = value;
1977 break;
1978
1979 /* Integer held in K: again, allow octal and hex formats, and suffixes K and
1980 M. */
1981
1982 case opt_Kint:
1983 {
1984 uschar *endptr;
1985 errno = 0;
1986 value = strtol(CS s, CSS &endptr, intbase);
1987
1988 if (endptr == s)
1989 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "%sinteger expected for %s",
1990 inttype, name);
1991
1992 if (errno != ERANGE)
1993 {
1994 if (tolower(*endptr) == 'm')
1995 {
1996 if (value > INT_MAX/1024 || value < INT_MIN/1024) errno = ERANGE;
1997 else value *= 1024;
1998 endptr++;
1999 }
2000 else if (tolower(*endptr) == 'k')
2001 {
2002 endptr++;
2003 }
2004 else
2005 {
2006 value = (value + 512)/1024;
2007 }
2008 }
2009
2010 if (errno == ERANGE) log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
2011 "absolute value of integer \"%s\" is too large (overflow)", s);
2012
2013 while (isspace(*endptr)) endptr++;
2014 if (*endptr != 0)
2015 extra_chars_error(endptr, inttype, US"integer value for ", name);
2016 }
2017
2018 if (data_block == NULL)
2019 *((int *)(ol->value)) = value;
2020 else
2021 *((int *)((uschar *)data_block + (long int)(ol->value))) = value;
2022 break;
2023
2024 /* Fixed-point number: held to 3 decimal places. */
2025
2026 case opt_fixed:
2027 if (sscanf(CS s, "%d%n", &value, &count) != 1)
2028 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
2029 "fixed-point number expected for %s", name);
2030
2031 if (value < 0) log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
2032 "integer \"%s\" is too large (overflow)", s);
2033
2034 value *= 1000;
2035
2036 if (value < 0) log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
2037 "integer \"%s\" is too large (overflow)", s);
2038
2039 if (s[count] == '.')
2040 {
2041 int d = 100;
2042 while (isdigit(s[++count]))
2043 {
2044 value += (s[count] - '0') * d;
2045 d /= 10;
2046 }
2047 }
2048
2049 while (isspace(s[count])) count++;
2050
2051 if (s[count] != 0)
2052 extra_chars_error(s+count, US"fixed-point value for ", name, US"");
2053
2054 if (data_block == NULL)
2055 *((int *)(ol->value)) = value;
2056 else
2057 *((int *)((uschar *)data_block + (long int)(ol->value))) = value;
2058 break;
2059
2060 /* There's a special routine to read time values. */
2061
2062 case opt_time:
2063 value = readconf_readtime(s, 0, FALSE);
2064 if (value < 0)
2065 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "invalid time value for %s",
2066 name);
2067 if (data_block == NULL)
2068 *((int *)(ol->value)) = value;
2069 else
2070 *((int *)((uschar *)data_block + (long int)(ol->value))) = value;
2071 break;
2072
2073 /* A time list is a list of colon-separated times, with the first
2074 element holding the size of the list and the second the number of
2075 entries used. */
2076
2077 case opt_timelist:
2078 {
2079 int count = 0;
2080 int *list = (data_block == NULL)?
2081 (int *)(ol->value) :
2082 (int *)((uschar *)data_block + (long int)(ol->value));
2083
2084 if (*s != 0) for (count = 1; count <= list[0] - 2; count++)
2085 {
2086 int terminator = 0;
2087 uschar *snext = Ustrchr(s, ':');
2088 if (snext != NULL)
2089 {
2090 uschar *ss = snext;
2091 while (ss > s && isspace(ss[-1])) ss--;
2092 terminator = *ss;
2093 }
2094 value = readconf_readtime(s, terminator, FALSE);
2095 if (value < 0)
2096 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "invalid time value for %s",
2097 name);
2098 if (count > 1 && value <= list[count])
2099 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
2100 "time value out of order for %s", name);
2101 list[count+1] = value;
2102 if (snext == NULL) break;
2103 s = snext + 1;
2104 while (isspace(*s)) s++;
2105 }
2106
2107 if (count > list[0] - 2)
2108 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "too many time values for %s",
2109 name);
2110 if (count > 0 && list[2] == 0) count = 0;
2111 list[1] = count;
2112 }
2113
2114 break;
2115 }
2116
2117 return TRUE;
2118 }
2119
2120
2121
2122 /*************************************************
2123 * Print a time value *
2124 *************************************************/
2125
2126 /*
2127 Argument: a time value in seconds
2128 Returns: pointer to a fixed buffer containing the time as a string,
2129 in readconf_readtime() format
2130 */
2131
2132 uschar *
2133 readconf_printtime(int t)
2134 {
2135 int s, m, h, d, w;
2136 uschar *p = time_buffer;
2137
2138 if (t < 0)
2139 {
2140 *p++ = '-';
2141 t = -t;
2142 }
2143
2144 s = t % 60;
2145 t /= 60;
2146 m = t % 60;
2147 t /= 60;
2148 h = t % 24;
2149 t /= 24;
2150 d = t % 7;
2151 w = t/7;
2152
2153 if (w > 0) { sprintf(CS p, "%dw", w); while (*p) p++; }
2154 if (d > 0) { sprintf(CS p, "%dd", d); while (*p) p++; }
2155 if (h > 0) { sprintf(CS p, "%dh", h); while (*p) p++; }
2156 if (m > 0) { sprintf(CS p, "%dm", m); while (*p) p++; }
2157 if (s > 0 || p == time_buffer) sprintf(CS p, "%ds", s);
2158
2159 return time_buffer;
2160 }
2161
2162
2163
2164 /*************************************************
2165 * Print an individual option value *
2166 *************************************************/
2167
2168 /* This is used by the -bP option, so prints to the standard output.
2169 The entire options list is passed in as an argument, because some options come
2170 in pairs - typically uid/gid settings, which can either be explicit numerical
2171 values, or strings to be expanded later. If the numerical value is unset,
2172 search for "*expand_<name>" to see if there is a string equivalent.
2173
2174 Arguments:
2175 ol option entry, or NULL for an unknown option
2176 name option name
2177 options_block NULL for main configuration options; otherwise points to
2178 a driver block; if the option doesn't have opt_public
2179 set, then options_block->options_block is where the item
2180 resides.
2181 oltop points to the option list in which ol exists
2182 last one more than the offset of the last entry in optop
2183 no_labels do not show "foo = " at the start.
2184
2185 Returns: nothing
2186 */
2187
2188 static void
2189 print_ol(optionlist *ol, uschar *name, void *options_block,
2190 optionlist *oltop, int last, BOOL no_labels)
2191 {
2192 struct passwd *pw;
2193 struct group *gr;
2194 optionlist *ol2;
2195 void *value;
2196 uid_t *uidlist;
2197 gid_t *gidlist;
2198 uschar *s;
2199 uschar name2[64];
2200
2201 if (ol == NULL)
2202 {
2203 printf("%s is not a known option\n", name);
2204 return;
2205 }
2206
2207 /* Non-admin callers cannot see options that have been flagged secure by the
2208 "hide" prefix. */
2209
2210 if (!admin_user && (ol->type & opt_secure) != 0)
2211 {
2212 const char * const hidden = "<value not displayable>";
2213 if (no_labels)
2214 printf("%s\n", hidden);
2215 else
2216 printf("%s = %s\n", name, hidden);
2217 return;
2218 }
2219
2220 /* Else show the value of the option */
2221
2222 value = ol->value;
2223 if (options_block != NULL)
2224 {
2225 if ((ol->type & opt_public) == 0)
2226 options_block = (void *)(((driver_instance *)options_block)->options_block);
2227 value = (void *)((uschar *)options_block + (long int)value);
2228 }
2229
2230 switch(ol->type & opt_mask)
2231 {
2232 case opt_stringptr:
2233 case opt_rewrite: /* Show the text value */
2234 s = *((uschar **)value);
2235 if (!no_labels) printf("%s = ", name);
2236 printf("%s\n", (s == NULL)? US"" : string_printing2(s, FALSE));
2237 break;
2238
2239 case opt_int:
2240 if (!no_labels) printf("%s = ", name);
2241 printf("%d\n", *((int *)value));
2242 break;
2243
2244 case opt_mkint:
2245 {
2246 int x = *((int *)value);
2247 if (x != 0 && (x & 1023) == 0)
2248 {
2249 int c = 'K';
2250 x >>= 10;
2251 if ((x & 1023) == 0)
2252 {
2253 c = 'M';
2254 x >>= 10;
2255 }
2256 if (!no_labels) printf("%s = ", name);
2257 printf("%d%c\n", x, c);
2258 }
2259 else
2260 {
2261 if (!no_labels) printf("%s = ", name);
2262 printf("%d\n", x);
2263 }
2264 }
2265 break;
2266
2267 case opt_Kint:
2268 {
2269 int x = *((int *)value);
2270 if (!no_labels) printf("%s = ", name);
2271 if (x == 0) printf("0\n");
2272 else if ((x & 1023) == 0) printf("%dM\n", x >> 10);
2273 else printf("%dK\n", x);
2274 }
2275 break;
2276
2277 case opt_octint:
2278 if (!no_labels) printf("%s = ", name);
2279 printf("%#o\n", *((int *)value));
2280 break;
2281
2282 /* Can be negative only when "unset", in which case integer */
2283
2284 case opt_fixed:
2285 {
2286 int x = *((int *)value);
2287 int f = x % 1000;
2288 int d = 100;
2289 if (x < 0) printf("%s =\n", name); else
2290 {
2291 if (!no_labels) printf("%s = ", name);
2292 printf("%d.", x/1000);
2293 do
2294 {
2295 printf("%d", f/d);
2296 f %= d;
2297 d /= 10;
2298 }
2299 while (f != 0);
2300 printf("\n");
2301 }
2302 }
2303 break;
2304
2305 /* If the numerical value is unset, try for the string value */
2306
2307 case opt_expand_uid:
2308 if (! *get_set_flag(name, oltop, last, options_block))
2309 {
2310 sprintf(CS name2, "*expand_%.50s", name);
2311 ol2 = find_option(name2, oltop, last);
2312 if (ol2 != NULL)
2313 {
2314 void *value2 = ol2->value;
2315 if (options_block != NULL)
2316 value2 = (void *)((uschar *)options_block + (long int)value2);
2317 s = *((uschar **)value2);
2318 if (!no_labels) printf("%s = ", name);
2319 printf("%s\n", (s == NULL)? US"" : string_printing(s));
2320 break;
2321 }
2322 }
2323
2324 /* Else fall through */
2325
2326 case opt_uid:
2327 if (!no_labels) printf("%s = ", name);
2328 if (! *get_set_flag(name, oltop, last, options_block))
2329 printf("\n");
2330 else
2331 {
2332 pw = getpwuid(*((uid_t *)value));
2333 if (pw == NULL)
2334 printf("%ld\n", (long int)(*((uid_t *)value)));
2335 else printf("%s\n", pw->pw_name);
2336 }
2337 break;
2338
2339 /* If the numerical value is unset, try for the string value */
2340
2341 case opt_expand_gid:
2342 if (! *get_set_flag(name, oltop, last, options_block))
2343 {
2344 sprintf(CS name2, "*expand_%.50s", name);
2345 ol2 = find_option(name2, oltop, last);
2346 if (ol2 != NULL && (ol2->type & opt_mask) == opt_stringptr)
2347 {
2348 void *value2 = ol2->value;
2349 if (options_block != NULL)
2350 value2 = (void *)((uschar *)options_block + (long int)value2);
2351 s = *((uschar **)value2);
2352 if (!no_labels) printf("%s = ", name);
2353 printf("%s\n", (s == NULL)? US"" : string_printing(s));
2354 break;
2355 }
2356 }
2357
2358 /* Else fall through */
2359
2360 case opt_gid:
2361 if (!no_labels) printf("%s = ", name);
2362 if (! *get_set_flag(name, oltop, last, options_block))
2363 printf("\n");
2364 else
2365 {
2366 gr = getgrgid(*((int *)value));
2367 if (gr == NULL)
2368 printf("%ld\n", (long int)(*((int *)value)));
2369 else printf("%s\n", gr->gr_name);
2370 }
2371 break;
2372
2373 case opt_uidlist:
2374 uidlist = *((uid_t **)value);
2375 if (!no_labels) printf("%s =", name);
2376 if (uidlist != NULL)
2377 {
2378 int i;
2379 uschar sep = ' ';
2380 if (no_labels) sep = '\0';
2381 for (i = 1; i <= (int)(uidlist[0]); i++)
2382 {
2383 uschar *name = NULL;
2384 pw = getpwuid(uidlist[i]);
2385 if (pw != NULL) name = US pw->pw_name;
2386 if (sep != '\0') printf("%c", sep);
2387 if (name != NULL) printf("%s", name);
2388 else printf("%ld", (long int)(uidlist[i]));
2389 sep = ':';
2390 }
2391 }
2392 printf("\n");
2393 break;
2394
2395 case opt_gidlist:
2396 gidlist = *((gid_t **)value);
2397 if (!no_labels) printf("%s =", name);
2398 if (gidlist != NULL)
2399 {
2400 int i;
2401 uschar sep = ' ';
2402 if (no_labels) sep = '\0';
2403 for (i = 1; i <= (int)(gidlist[0]); i++)
2404 {
2405 uschar *name = NULL;
2406 gr = getgrgid(gidlist[i]);
2407 if (gr != NULL) name = US gr->gr_name;
2408 if (sep != '\0') printf("%c", sep);
2409 if (name != NULL) printf("%s", name);
2410 else printf("%ld", (long int)(gidlist[i]));
2411 sep = ':';
2412 }
2413 }
2414 printf("\n");
2415 break;
2416
2417 case opt_time:
2418 if (!no_labels) printf("%s = ", name);
2419 printf("%s\n", readconf_printtime(*((int *)value)));
2420 break;
2421
2422 case opt_timelist:
2423 {
2424 int i;
2425 int *list = (int *)value;
2426 if (!no_labels) printf("%s = ", name);
2427 for (i = 0; i < list[1]; i++)
2428 printf("%s%s", (i == 0)? "" : ":", readconf_printtime(list[i+2]));
2429 printf("\n");
2430 }
2431 break;
2432
2433 case opt_bit:
2434 printf("%s%s\n", ((*((int *)value)) & (1 << ((ol->type >> 16) & 31)))?
2435 "" : "no_", name);
2436 break;
2437
2438 case opt_expand_bool:
2439 sprintf(CS name2, "*expand_%.50s", name);
2440 ol2 = find_option(name2, oltop, last);
2441 if (ol2 != NULL && ol2->value != NULL)
2442 {
2443 void *value2 = ol2->value;
2444 if (options_block != NULL)
2445 value2 = (void *)((uschar *)options_block + (long int)value2);
2446 s = *((uschar **)value2);
2447 if (s != NULL)
2448 {
2449 if (!no_labels) printf("%s = ", name);
2450 printf("%s\n", string_printing(s));
2451 break;
2452 }
2453 /* s == NULL => string not set; fall through */
2454 }
2455
2456 /* Fall through */
2457
2458 case opt_bool:
2459 case opt_bool_verify:
2460 case opt_bool_set:
2461 printf("%s%s\n", (*((BOOL *)value))? "" : "no_", name);
2462 break;
2463 }
2464 }
2465
2466
2467
2468 /*************************************************
2469 * Print value from main configuration *
2470 *************************************************/
2471
2472 /* This function, called as a result of encountering the -bP option,
2473 causes the value of any main configuration variable to be output if the
2474 second argument is NULL. There are some special values:
2475
2476 all print all main configuration options
2477 configure_file print the name of the configuration file
2478 routers print the routers' configurations
2479 transports print the transports' configuration
2480 authenticators print the authenticators' configuration
2481 macros print the macros' configuration
2482 router_list print a list of router names
2483 transport_list print a list of transport names
2484 authenticator_list print a list of authentication mechanism names
2485 macro_list print a list of macro names
2486 +name print a named list item
2487 local_scan print the local_scan options
2488
2489 If the second argument is not NULL, it must be one of "router", "transport",
2490 "authenticator" or "macro" in which case the first argument identifies the
2491 driver whose options are to be printed.
2492
2493 Arguments:
2494 name option name if type == NULL; else driver name
2495 type NULL or driver type name, as described above
2496 no_labels avoid the "foo = " at the start of an item
2497
2498 Returns: nothing
2499 */
2500
2501 void
2502 readconf_print(uschar *name, uschar *type, BOOL no_labels)
2503 {
2504 BOOL names_only = FALSE;
2505 optionlist *ol;
2506 optionlist *ol2 = NULL;
2507 driver_instance *d = NULL;
2508 macro_item *m;
2509 int size = 0;
2510
2511 if (type == NULL)
2512 {
2513 if (*name == '+')
2514 {
2515 int i;
2516 tree_node *t;
2517 BOOL found = FALSE;
2518 static uschar *types[] = { US"address", US"domain", US"host",
2519 US"localpart" };
2520 static tree_node **anchors[] = { &addresslist_anchor, &domainlist_anchor,
2521 &hostlist_anchor, &localpartlist_anchor };
2522
2523 for (i = 0; i < 4; i++)
2524 {
2525 t = tree_search(*(anchors[i]), name+1);
2526 if (t != NULL)
2527 {
2528 found = TRUE;
2529 if (no_labels)
2530 printf("%s\n", ((namedlist_block *)(t->data.ptr))->string);
2531 else
2532 printf("%slist %s = %s\n", types[i], name+1,
2533 ((namedlist_block *)(t->data.ptr))->string);
2534 }
2535 }
2536
2537 if (!found)
2538 printf("no address, domain, host, or local part list called \"%s\" "
2539 "exists\n", name+1);
2540
2541 return;
2542 }
2543
2544 if (Ustrcmp(name, "configure_file") == 0)
2545 {
2546 printf("%s\n", CS config_main_filename);
2547 return;
2548 }
2549
2550 if (Ustrcmp(name, "all") == 0)
2551 {
2552 for (ol = optionlist_config;
2553 ol < optionlist_config + optionlist_config_size; ol++)
2554 {
2555 if ((ol->type & opt_hidden) == 0)
2556 print_ol(ol, US ol->name, NULL,
2557 optionlist_config, optionlist_config_size,
2558 no_labels);
2559 }
2560 return;
2561 }
2562
2563 if (Ustrcmp(name, "local_scan") == 0)
2564 {
2565 #ifndef LOCAL_SCAN_HAS_OPTIONS
2566 printf("local_scan() options are not supported\n");
2567 #else
2568 for (ol = local_scan_options;
2569 ol < local_scan_options + local_scan_options_count; ol++)
2570 {
2571 print_ol(ol, US ol->name, NULL, local_scan_options,
2572 local_scan_options_count, no_labels);
2573 }
2574 #endif
2575 return;
2576 }
2577
2578 if (Ustrcmp(name, "routers") == 0)
2579 {
2580 type = US"router";
2581 name = NULL;
2582 }
2583 else if (Ustrcmp(name, "transports") == 0)
2584 {
2585 type = US"transport";
2586 name = NULL;
2587 }
2588
2589 else if (Ustrcmp(name, "authenticators") == 0)
2590 {
2591 type = US"authenticator";
2592 name = NULL;
2593 }
2594
2595 else if (Ustrcmp(name, "macros") == 0)
2596 {
2597 type = US"macro";
2598 name = NULL;
2599 }
2600
2601 else if (Ustrcmp(name, "router_list") == 0)
2602 {
2603 type = US"router";
2604 name = NULL;
2605 names_only = TRUE;
2606 }
2607
2608 else if (Ustrcmp(name, "transport_list") == 0)
2609 {
2610 type = US"transport";
2611 name = NULL;
2612 names_only = TRUE;
2613 }
2614
2615 else if (Ustrcmp(name, "authenticator_list") == 0)
2616 {
2617 type = US"authenticator";
2618 name = NULL;
2619 names_only = TRUE;
2620 }
2621
2622 else if (Ustrcmp(name, "macro_list") == 0)
2623 {
2624 type = US"macro";
2625 name = NULL;
2626 names_only = TRUE;
2627 }
2628
2629 else
2630 {
2631 print_ol(find_option(name, optionlist_config, optionlist_config_size),
2632 name, NULL, optionlist_config, optionlist_config_size, no_labels);
2633 return;
2634 }
2635 }
2636
2637 /* Handle the options for a router or transport. Skip options that are flagged
2638 as hidden. Some of these are options with names starting with '*', used for
2639 internal alternative representations of other options (which the printing
2640 function will sort out). Others are synonyms kept for backward compatibility.
2641 */
2642
2643 if (Ustrcmp(type, "router") == 0)
2644 {
2645 d = (driver_instance *)routers;
2646 ol2 = optionlist_routers;
2647 size = optionlist_routers_size;
2648 }
2649 else if (Ustrcmp(type, "transport") == 0)
2650 {
2651 d = (driver_instance *)transports;
2652 ol2 = optionlist_transports;
2653 size = optionlist_transports_size;
2654 }
2655 else if (Ustrcmp(type, "authenticator") == 0)
2656 {
2657 d = (driver_instance *)auths;
2658 ol2 = optionlist_auths;
2659 size = optionlist_auths_size;
2660 }
2661
2662 else if (Ustrcmp(type, "macro") == 0)
2663 {
2664 /* People store passwords in macros and they were previously not available
2665 for printing. So we have an admin_users restriction. */
2666 if (!admin_user)
2667 {
2668 fprintf(stderr, "exim: permission denied\n");
2669 exit(EXIT_FAILURE);
2670 }
2671 for (m = macros; m != NULL; m = m->next)
2672 {
2673 if (name == NULL || Ustrcmp(name, m->name) == 0)
2674 {
2675 if (names_only)
2676 printf("%s\n", CS m->name);
2677 else
2678 printf("%s=%s\n", CS m->name, CS m->replacement);
2679 if (name != NULL)
2680 return;
2681 }
2682 }
2683 if (name != NULL)
2684 printf("%s %s not found\n", type, name);
2685 return;
2686 }
2687
2688 if (names_only)
2689 {
2690 for (; d != NULL; d = d->next) printf("%s\n", CS d->name);
2691 return;
2692 }
2693
2694 /* Either search for a given driver, or print all of them */
2695
2696 for (; d != NULL; d = d->next)
2697 {
2698 if (name == NULL)
2699 printf("\n%s %s:\n", d->name, type);
2700 else if (Ustrcmp(d->name, name) != 0) continue;
2701
2702 for (ol = ol2; ol < ol2 + size; ol++)
2703 {
2704 if ((ol->type & opt_hidden) == 0)
2705 print_ol(ol, US ol->name, d, ol2, size, no_labels);
2706 }
2707
2708 for (ol = d->info->options;
2709 ol < d->info->options + *(d->info->options_count); ol++)
2710 {
2711 if ((ol->type & opt_hidden) == 0)
2712 print_ol(ol, US ol->name, d, d->info->options, *(d->info->options_count), no_labels);
2713 }
2714 if (name != NULL) return;
2715 }
2716 if (name != NULL) printf("%s %s not found\n", type, name);
2717 }
2718
2719
2720
2721 /*************************************************
2722 * Read a named list item *
2723 *************************************************/
2724
2725 /* This function reads a name and a list (i.e. string). The name is used to
2726 save the list in a tree, sorted by its name. Each entry also has a number,
2727 which can be used for caching tests, but if the string contains any expansion
2728 items other than $key, the number is set negative to inhibit caching. This
2729 mechanism is used for domain, host, and address lists that are referenced by
2730 the "+name" syntax.
2731
2732 Arguments:
2733 anchorp points to the tree anchor
2734 numberp points to the current number for this tree
2735 max the maximum number permitted
2736 s the text of the option line, starting immediately after the name
2737 of the list type
2738 tname the name of the list type, for messages
2739
2740 Returns: nothing
2741 */
2742
2743 static void
2744 read_named_list(tree_node **anchorp, int *numberp, int max, uschar *s,
2745 uschar *tname)
2746 {
2747 BOOL forcecache = FALSE;
2748 uschar *ss;
2749 tree_node *t;
2750 namedlist_block *nb = store_get(sizeof(namedlist_block));
2751
2752 if (Ustrncmp(s, "_cache", 6) == 0)
2753 {
2754 forcecache = TRUE;
2755 s += 6;
2756 }
2757
2758 if (!isspace(*s))
2759 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "unrecognized configuration line");
2760
2761 if (*numberp >= max)
2762 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "too many named %ss (max is %d)\n",
2763 tname, max);
2764
2765 while (isspace(*s)) s++;
2766 ss = s;
2767 while (isalnum(*s) || *s == '_') s++;
2768 t = store_get(sizeof(tree_node) + s-ss);
2769 Ustrncpy(t->name, ss, s-ss);
2770 t->name[s-ss] = 0;
2771 while (isspace(*s)) s++;
2772
2773 if (!tree_insertnode(anchorp, t))
2774 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
2775 "duplicate name \"%s\" for a named %s", t->name, tname);
2776
2777 t->data.ptr = nb;
2778 nb->number = *numberp;
2779 *numberp += 1;
2780
2781 if (*s++ != '=') log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
2782 "missing '=' after \"%s\"", t->name);
2783 while (isspace(*s)) s++;
2784 nb->string = read_string(s, t->name);
2785 nb->cache_data = NULL;
2786
2787 /* Check the string for any expansions; if any are found, mark this list
2788 uncacheable unless the user has explicited forced caching. */
2789
2790 if (!forcecache && Ustrchr(nb->string, '$') != NULL) nb->number = -1;
2791 }
2792
2793
2794
2795
2796 /*************************************************
2797 * Unpick data for a rate limit *
2798 *************************************************/
2799
2800 /* This function is called to unpick smtp_ratelimit_{mail,rcpt} into four
2801 separate values.
2802
2803 Arguments:
2804 s string, in the form t,b,f,l
2805 where t is the threshold (integer)
2806 b is the initial delay (time)
2807 f is the multiplicative factor (fixed point)
2808 k is the maximum time (time)
2809 threshold where to store threshold
2810 base where to store base in milliseconds
2811 factor where to store factor in milliseconds
2812 limit where to store limit
2813
2814 Returns: nothing (panics on error)
2815 */
2816
2817 static void
2818 unpick_ratelimit(uschar *s, int *threshold, int *base, double *factor,
2819 int *limit)
2820 {
2821 uschar bstring[16], lstring[16];
2822
2823 if (sscanf(CS s, "%d, %15[0123456789smhdw.], %lf, %15s", threshold, bstring,
2824 factor, lstring) == 4)
2825 {
2826 *base = readconf_readtime(bstring, 0, TRUE);
2827 *limit = readconf_readtime(lstring, 0, TRUE);
2828 if (*base >= 0 && *limit >= 0) return;
2829 }
2830 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "malformed ratelimit data: %s", s);
2831 }
2832
2833
2834
2835
2836 /*************************************************
2837 * Drop privs for checking TLS config *
2838 *************************************************/
2839
2840 /* We want to validate TLS options during readconf, but do not want to be
2841 root when we call into the TLS library, in case of library linkage errors
2842 which cause segfaults; before this check, those were always done as the Exim
2843 runtime user and it makes sense to continue with that.
2844
2845 Assumes: tls_require_ciphers has been set, if it will be
2846 exim_user has been set, if it will be
2847 exim_group has been set, if it will be
2848
2849 Returns: bool for "okay"; false will cause caller to immediately exit.
2850 */
2851
2852 #ifdef SUPPORT_TLS
2853 static BOOL
2854 tls_dropprivs_validate_require_cipher(void)
2855 {
2856 const uschar *errmsg;
2857 pid_t pid;
2858 int rc, status;
2859 void (*oldsignal)(int);
2860
2861 oldsignal = signal(SIGCHLD, SIG_DFL);
2862
2863 fflush(NULL);
2864 if ((pid = fork()) < 0)
2865 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "fork failed for TLS check");
2866
2867 if (pid == 0)
2868 {
2869 /* in some modes, will have dropped privilege already */
2870 if (!geteuid())
2871 exim_setugid(exim_uid, exim_gid, FALSE,
2872 US"calling tls_validate_require_cipher");
2873
2874 errmsg = tls_validate_require_cipher();
2875 if (errmsg)
2876 {
2877 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
2878 "tls_require_ciphers invalid: %s", errmsg);
2879 }
2880 fflush(NULL);
2881 _exit(0);
2882 }
2883
2884 do {
2885 rc = waitpid(pid, &status, 0);
2886 } while (rc < 0 && errno == EINTR);
2887
2888 DEBUG(D_tls)
2889 debug_printf("tls_validate_require_cipher child %d ended: status=0x%x\n",
2890 (int)pid, status);
2891
2892 signal(SIGCHLD, oldsignal);
2893
2894 return status == 0;
2895 }
2896 #endif /* SUPPORT_TLS */
2897
2898
2899
2900
2901 /*************************************************
2902 * Read main configuration options *
2903 *************************************************/
2904
2905 /* This function is the first to be called for configuration reading. It
2906 opens the configuration file and reads general configuration settings until
2907 it reaches the end of the configuration section. The file is then left open so
2908 that the remaining configuration data can subsequently be read if needed for
2909 this run of Exim.
2910
2911 The configuration file must be owned either by root or exim, and be writeable
2912 only by root or uid/gid exim. The values for Exim's uid and gid can be changed
2913 in the config file, so the test is done on the compiled in values. A slight
2914 anomaly, to be carefully documented.
2915
2916 The name of the configuration file is taken from a list that is included in the
2917 binary of Exim. It can be altered from the command line, but if that is done,
2918 root privilege is immediately withdrawn unless the caller is root or exim.
2919 The first file on the list that exists is used.
2920
2921 For use on multiple systems that share file systems, first look for a
2922 configuration file whose name has the current node name on the end. If that is
2923 not found, try the generic name. For really contorted configurations, that run
2924 multiple Exims with different uid settings, first try adding the effective uid
2925 before the node name. These complications are going to waste resources on most
2926 systems. Therefore they are available only when requested by compile-time
2927 options. */
2928
2929 void
2930 readconf_main(void)
2931 {
2932 int sep = 0;
2933 struct stat statbuf;
2934 uschar *s, *filename;
2935 uschar *list = config_main_filelist;
2936
2937 /* Loop through the possible file names */
2938
2939 while((filename = string_nextinlist(&list, &sep, big_buffer, big_buffer_size))
2940 != NULL)
2941 {
2942 /* Cut out all the fancy processing unless specifically wanted */
2943
2944 #if defined(CONFIGURE_FILE_USE_NODE) || defined(CONFIGURE_FILE_USE_EUID)
2945 uschar *suffix = filename + Ustrlen(filename);
2946
2947 /* Try for the node-specific file if a node name exists */
2948
2949 #ifdef CONFIGURE_FILE_USE_NODE
2950 struct utsname uts;
2951 if (uname(&uts) >= 0)
2952 {
2953 #ifdef CONFIGURE_FILE_USE_EUID
2954 sprintf(CS suffix, ".%ld.%.256s", (long int)original_euid, uts.nodename);
2955 config_file = Ufopen(filename, "rb");
2956 if (config_file == NULL)
2957 #endif /* CONFIGURE_FILE_USE_EUID */
2958 {
2959 sprintf(CS suffix, ".%.256s", uts.nodename);
2960 config_file = Ufopen(filename, "rb");
2961 }
2962 }
2963 #endif /* CONFIGURE_FILE_USE_NODE */
2964
2965 /* Otherwise, try the generic name, possibly with the euid added */
2966
2967 #ifdef CONFIGURE_FILE_USE_EUID
2968 if (config_file == NULL)
2969 {
2970 sprintf(CS suffix, ".%ld", (long int)original_euid);
2971 config_file = Ufopen(filename, "rb");
2972 }
2973 #endif /* CONFIGURE_FILE_USE_EUID */
2974
2975 /* Finally, try the unadorned name */
2976
2977 if (config_file == NULL)
2978 {
2979 *suffix = 0;
2980 config_file = Ufopen(filename, "rb");
2981 }
2982 #else /* if neither defined */
2983
2984 /* This is the common case when the fancy processing is not included. */
2985
2986 config_file = Ufopen(filename, "rb");
2987 #endif
2988
2989 /* If the file does not exist, continue to try any others. For any other
2990 error, break out (and die). */
2991
2992 if (config_file != NULL || errno != ENOENT) break;
2993 }
2994
2995 /* On success, save the name for verification; config_filename is used when
2996 logging configuration errors (it changes for .included files) whereas
2997 config_main_filename is the name shown by -bP. Failure to open a configuration
2998 file is a serious disaster. */
2999
3000 if (config_file != NULL)
3001 {
3002 config_filename = config_main_filename = string_copy(filename);
3003 }
3004 else
3005 {
3006 if (filename == NULL)
3007 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "non-existent configuration file(s): "
3008 "%s", config_main_filelist);
3009 else
3010 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "%s", string_open_failed(errno,
3011 "configuration file %s", filename));
3012 }
3013
3014 /* Check the status of the file we have opened, if we have retained root
3015 privileges and the file isn't /dev/null (which *should* be 0666). */
3016
3017 if (trusted_config && Ustrcmp(filename, US"/dev/null"))
3018 {
3019 if (fstat(fileno(config_file), &statbuf) != 0)
3020 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "failed to stat configuration file %s",
3021 big_buffer);
3022
3023 if ((statbuf.st_uid != root_uid /* owner not root */
3024 #ifdef CONFIGURE_OWNER
3025 && statbuf.st_uid != config_uid /* owner not the special one */
3026 #endif
3027 ) || /* or */
3028 (statbuf.st_gid != root_gid /* group not root & */
3029 #ifdef CONFIGURE_GROUP
3030 && statbuf.st_gid != config_gid /* group not the special one */
3031 #endif
3032 && (statbuf.st_mode & 020) != 0) || /* group writeable */
3033 /* or */
3034 ((statbuf.st_mode & 2) != 0)) /* world writeable */
3035
3036 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "Exim configuration file %s has the "
3037 "wrong owner, group, or mode", big_buffer);
3038 }
3039
3040 /* Process the main configuration settings. They all begin with a lower case
3041 letter. If we see something starting with an upper case letter, it is taken as
3042 a macro definition. */
3043
3044 while ((s = get_config_line()) != NULL)
3045 {
3046 if (isupper(s[0])) read_macro_assignment(s);
3047
3048 else if (Ustrncmp(s, "domainlist", 10) == 0)
3049 read_named_list(&domainlist_anchor, &domainlist_count,
3050 MAX_NAMED_LIST, s+10, US"domain list");
3051
3052 else if (Ustrncmp(s, "hostlist", 8) == 0)
3053 read_named_list(&hostlist_anchor, &hostlist_count,
3054 MAX_NAMED_LIST, s+8, US"host list");
3055
3056 else if (Ustrncmp(s, US"addresslist", 11) == 0)
3057 read_named_list(&addresslist_anchor, &addresslist_count,
3058 MAX_NAMED_LIST, s+11, US"address list");
3059
3060 else if (Ustrncmp(s, US"localpartlist", 13) == 0)
3061 read_named_list(&localpartlist_anchor, &localpartlist_count,
3062 MAX_NAMED_LIST, s+13, US"local part list");
3063
3064 else
3065 (void) readconf_handle_option(s, optionlist_config, optionlist_config_size,
3066 NULL, US"main option \"%s\" unknown");
3067 }
3068
3069
3070 /* If local_sender_retain is set, local_from_check must be unset. */
3071
3072 if (local_sender_retain && local_from_check)
3073 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "both local_from_check and "
3074 "local_sender_retain are set; this combination is not allowed");
3075
3076 /* If the timezone string is empty, set it to NULL, implying no TZ variable
3077 wanted. */
3078
3079 if (timezone_string != NULL && *timezone_string == 0) timezone_string = NULL;
3080
3081 /* The max retry interval must not be greater than 24 hours. */
3082
3083 if (retry_interval_max > 24*60*60) retry_interval_max = 24*60*60;
3084
3085 /* remote_max_parallel must be > 0 */
3086
3087 if (remote_max_parallel <= 0) remote_max_parallel = 1;
3088
3089 /* Save the configured setting of freeze_tell, so we can re-instate it at the
3090 start of a new SMTP message. */
3091
3092 freeze_tell_config = freeze_tell;
3093
3094 /* The primary host name may be required for expansion of spool_directory
3095 and log_file_path, so make sure it is set asap. It is obtained from uname(),
3096 but if that yields an unqualified value, make a FQDN by using gethostbyname to
3097 canonize it. Some people like upper case letters in their host names, so we
3098 don't force the case. */
3099
3100 if (primary_hostname == NULL)
3101 {
3102 uschar *hostname;
3103 struct utsname uts;
3104 if (uname(&uts) < 0)
3105 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "uname() failed to yield host name");
3106 hostname = US uts.nodename;
3107
3108 if (Ustrchr(hostname, '.') == NULL)
3109 {
3110 int af = AF_INET;
3111 struct hostent *hostdata;
3112
3113 #if HAVE_IPV6
3114 if (!disable_ipv6 && (dns_ipv4_lookup == NULL ||
3115 match_isinlist(hostname, &dns_ipv4_lookup, 0, NULL, NULL, MCL_DOMAIN,
3116 TRUE, NULL) != OK))
3117 af = AF_INET6;
3118 #else
3119 af = AF_INET;
3120 #endif
3121
3122 for (;;)
3123 {
3124 #if HAVE_IPV6
3125 #if HAVE_GETIPNODEBYNAME
3126 int error_num;
3127 hostdata = getipnodebyname(CS hostname, af, 0, &error_num);
3128 #else
3129 hostdata = gethostbyname2(CS hostname, af);
3130 #endif
3131 #else
3132 hostdata = gethostbyname(CS hostname);
3133 #endif
3134
3135 if (hostdata != NULL)
3136 {
3137 hostname = US hostdata->h_name;
3138 break;
3139 }
3140
3141 if (af == AF_INET) break;
3142 af = AF_INET;
3143 }
3144 }
3145
3146 primary_hostname = string_copy(hostname);
3147 }
3148
3149 /* Set up default value for smtp_active_hostname */
3150
3151 smtp_active_hostname = primary_hostname;
3152
3153 /* If spool_directory wasn't set in the build-time configuration, it must have
3154 got set above. Of course, writing to the log may not work if log_file_path is
3155 not set, but it will at least get to syslog or somewhere, with any luck. */
3156
3157 if (*spool_directory == 0)
3158 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "spool_directory undefined: cannot "
3159 "proceed");
3160
3161 /* Expand the spool directory name; it may, for example, contain the primary
3162 host name. Same comment about failure. */
3163
3164 s = expand_string(spool_directory);
3165 if (s == NULL)
3166 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "failed to expand spool_directory "
3167 "\"%s\": %s", spool_directory, expand_string_message);
3168 spool_directory = s;
3169
3170 /* Expand log_file_path, which must contain "%s" in any component that isn't
3171 the null string or "syslog". It is also allowed to contain one instance of %D
3172 or %M. However, it must NOT contain % followed by anything else. */
3173
3174 if (*log_file_path != 0)
3175 {
3176 uschar *ss, *sss;
3177 int sep = ':'; /* Fixed for log file path */
3178 s = expand_string(log_file_path);
3179 if (s == NULL)
3180 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "failed to expand log_file_path "
3181 "\"%s\": %s", log_file_path, expand_string_message);
3182
3183 ss = s;
3184 while ((sss = string_nextinlist(&ss,&sep,big_buffer,big_buffer_size)) != NULL)
3185 {
3186 uschar *t;
3187 if (sss[0] == 0 || Ustrcmp(sss, "syslog") == 0) continue;
3188 t = Ustrstr(sss, "%s");
3189 if (t == NULL)
3190 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "log_file_path \"%s\" does not "
3191 "contain \"%%s\"", sss);
3192 *t = 'X';
3193 t = Ustrchr(sss, '%');
3194 if (t != NULL)
3195 {
3196 if ((t[1] != 'D' && t[1] != 'M') || Ustrchr(t+2, '%') != NULL)
3197 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "log_file_path \"%s\" contains "
3198 "unexpected \"%%\" character", s);
3199 }
3200 }
3201
3202 log_file_path = s;
3203 }
3204
3205 /* Interpret syslog_facility into an integer argument for 'ident' param to
3206 openlog(). Default is LOG_MAIL set in globals.c. Allow the user to omit the
3207 leading "log_". */
3208
3209 if (syslog_facility_str != NULL)
3210 {
3211 int i;
3212 uschar *s = syslog_facility_str;
3213
3214 if ((Ustrlen(syslog_facility_str) >= 4) &&
3215 (strncmpic(syslog_facility_str, US"log_", 4) == 0))
3216 s += 4;
3217
3218 for (i = 0; i < syslog_list_size; i++)
3219 {
3220 if (strcmpic(s, syslog_list[i].name) == 0)
3221 {
3222 syslog_facility = syslog_list[i].value;
3223 break;
3224 }
3225 }
3226
3227 if (i >= syslog_list_size)
3228 {
3229 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
3230 "failed to interpret syslog_facility \"%s\"", syslog_facility_str);
3231 }
3232 }
3233
3234 /* Expand pid_file_path */
3235
3236 if (*pid_file_path != 0)
3237 {
3238 s = expand_string(pid_file_path);
3239 if (s == NULL)
3240 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "failed to expand pid_file_path "
3241 "\"%s\": %s", pid_file_path, expand_string_message);
3242 pid_file_path = s;
3243 }
3244
3245 /* Set default value of process_log_path */
3246
3247 if (process_log_path == NULL || *process_log_path =='\0')
3248 process_log_path = string_sprintf("%s/exim-process.info", spool_directory);
3249
3250 /* Compile the regex for matching a UUCP-style "From_" line in an incoming
3251 message. */
3252
3253 regex_From = regex_must_compile(uucp_from_pattern, FALSE, TRUE);
3254
3255 /* Unpick the SMTP rate limiting options, if set */
3256
3257 if (smtp_ratelimit_mail != NULL)
3258 {
3259 unpick_ratelimit(smtp_ratelimit_mail, &smtp_rlm_threshold,
3260 &smtp_rlm_base, &smtp_rlm_factor, &smtp_rlm_limit);
3261 }
3262
3263 if (smtp_ratelimit_rcpt != NULL)
3264 {
3265 unpick_ratelimit(smtp_ratelimit_rcpt, &smtp_rlr_threshold,
3266 &smtp_rlr_base, &smtp_rlr_factor, &smtp_rlr_limit);
3267 }
3268
3269 /* The qualify domains default to the primary host name */
3270
3271 if (qualify_domain_sender == NULL)
3272 qualify_domain_sender = primary_hostname;
3273 if (qualify_domain_recipient == NULL)
3274 qualify_domain_recipient = qualify_domain_sender;
3275
3276 /* Setting system_filter_user in the configuration sets the gid as well if a
3277 name is given, but a numerical value does not. */
3278
3279 if (system_filter_uid_set && !system_filter_gid_set)
3280 {
3281 struct passwd *pw = getpwuid(system_filter_uid);
3282 if (pw == NULL)
3283 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "Failed to look up uid %ld",
3284 (long int)system_filter_uid);
3285 system_filter_gid = pw->pw_gid;
3286 system_filter_gid_set = TRUE;
3287 }
3288
3289 /* If the errors_reply_to field is set, check that it is syntactically valid
3290 and ensure it contains a domain. */
3291
3292 if (errors_reply_to != NULL)
3293 {
3294 uschar *errmess;
3295 int start, end, domain;
3296 uschar *recipient = parse_extract_address(errors_reply_to, &errmess,
3297 &start, &end, &domain, FALSE);
3298
3299 if (recipient == NULL)
3300 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
3301 "error in errors_reply_to (%s): %s", errors_reply_to, errmess);
3302
3303 if (domain == 0)
3304 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
3305 "errors_reply_to (%s) does not contain a domain", errors_reply_to);
3306 }
3307
3308 /* If smtp_accept_queue or smtp_accept_max_per_host is set, then
3309 smtp_accept_max must also be set. */
3310
3311 if (smtp_accept_max == 0 &&
3312 (smtp_accept_queue > 0 || smtp_accept_max_per_host != NULL))
3313 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
3314 "smtp_accept_max must be set if smtp_accept_queue or "
3315 "smtp_accept_max_per_host is set");
3316
3317 /* Set up the host number if anything is specified. It is an expanded string
3318 so that it can be computed from the host name, for example. We do this last
3319 so as to ensure that everything else is set up before the expansion. */
3320
3321 if (host_number_string != NULL)
3322 {
3323 long int n;
3324 uschar *end;
3325 uschar *s = expand_string(host_number_string);
3326 if (s == NULL)
3327 log_write(0, LOG_MAIN|LOG_PANIC_DIE,
3328 "failed to expand localhost_number \"%s\": %s",
3329 host_number_string, expand_string_message);
3330 n = Ustrtol(s, &end, 0);
3331 while (isspace(*end)) end++;
3332 if (*end != 0)
3333 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
3334 "localhost_number value is not a number: %s", s);
3335 if (n > LOCALHOST_MAX)
3336 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
3337 "localhost_number is greater than the maximum allowed value (%d)",
3338 LOCALHOST_MAX);
3339 host_number = n;
3340 }
3341
3342 #ifdef SUPPORT_TLS
3343 /* If tls_verify_hosts is set, tls_verify_certificates must also be set */
3344
3345 if ((tls_verify_hosts != NULL || tls_try_verify_hosts != NULL) &&
3346 tls_verify_certificates == NULL)
3347 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
3348 "tls_%sverify_hosts is set, but tls_verify_certificates is not set",
3349 (tls_verify_hosts != NULL)? "" : "try_");
3350
3351 /* This also checks that the library linkage is working and we can call
3352 routines in it, so call even if tls_require_ciphers is unset */
3353 if (!tls_dropprivs_validate_require_cipher())
3354 exit(1);
3355
3356 /* Magic number: at time of writing, 1024 has been the long-standing value
3357 used by so many clients, and what Exim used to use always, that it makes
3358 sense to just min-clamp this max-clamp at that. */
3359 if (tls_dh_max_bits < 1024)
3360 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
3361 "tls_dh_max_bits is too small, must be at least 1024 for interop");
3362
3363 /* If openssl_options is set, validate it */
3364 if (openssl_options != NULL)
3365 {
3366 # ifdef USE_GNUTLS
3367 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
3368 "openssl_options is set but we're using GnuTLS");
3369 # else
3370 long dummy;
3371 if (!(tls_openssl_options_parse(openssl_options, &dummy)))
3372 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
3373 "openssl_options parse error: %s", openssl_options);
3374 # endif
3375 }
3376 #endif
3377 }
3378
3379
3380
3381 /*************************************************
3382 * Initialize one driver *
3383 *************************************************/
3384
3385 /* This is called once the driver's generic options, if any, have been read.
3386 We can now find the driver, set up defaults for the private options, and
3387 unset any "set" bits in the private options table (which might have been
3388 set by another incarnation of the same driver).
3389
3390 Arguments:
3391 d pointer to driver instance block, with generic
3392 options filled in
3393 drivers_available vector of available drivers
3394 size_of_info size of each block in drivers_available
3395 class class of driver, for error message
3396
3397 Returns: pointer to the driver info block
3398 */
3399
3400 static driver_info *
3401 init_driver(driver_instance *d, driver_info *drivers_available,
3402 int size_of_info, uschar *class)
3403 {
3404 driver_info *dd;
3405
3406 for (dd = drivers_available; dd->driver_name[0] != 0;
3407 dd = (driver_info *)(((uschar *)dd) + size_of_info))
3408 {
3409 if (Ustrcmp(d->driver_name, dd->driver_name) == 0)
3410 {
3411 int i;
3412 int len = dd->options_len;
3413 d->info = dd;
3414 d->options_block = store_get(len);
3415 memcpy(d->options_block, dd->options_block, len);
3416 for (i = 0; i < *(dd->options_count); i++)
3417 dd->options[i].type &= ~opt_set;
3418 return dd;
3419 }
3420 }
3421
3422 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
3423 "%s %s: cannot find %s driver \"%s\"", class, d->name, class, d->driver_name);
3424
3425 return NULL; /* never obeyed */
3426 }
3427
3428
3429
3430
3431 /*************************************************
3432 * Initialize driver list *
3433 *************************************************/
3434
3435 /* This function is called for routers, transports, and authentication
3436 mechanisms. It reads the data from the current point in the configuration file
3437 up to the end of the section, and sets up a chain of instance blocks according
3438 to the file's contents. The file will already have been opened by a call to
3439 readconf_main, and must be left open for subsequent reading of further data.
3440
3441 Any errors cause a panic crash. Note that the blocks with names driver_info and
3442 driver_instance must map the first portions of all the _info and _instance
3443 blocks for this shared code to work.
3444
3445 Arguments:
3446 class "router", "transport", or "authenticator"
3447 anchor &routers, &transports, &auths
3448 drivers_available available drivers
3449 size_of_info size of each info block
3450 instance_default points to default data for an instance
3451 instance_size size of instance block
3452 driver_optionlist generic option list
3453 driver_optionlist_count count of generic option list
3454
3455 Returns: nothing
3456 */
3457
3458 void
3459 readconf_driver_init(
3460 uschar *class,
3461 driver_instance **anchor,
3462 driver_info *drivers_available,
3463 int size_of_info,
3464 void *instance_default,
3465 int instance_size,
3466 optionlist *driver_optionlist,
3467 int driver_optionlist_count)
3468 {
3469 driver_instance **p = anchor;
3470 driver_instance *d = NULL;
3471 uschar *buffer;
3472
3473 while ((buffer = get_config_line()) != NULL)
3474 {
3475 uschar name[64];
3476 uschar *s;
3477
3478 /* Read the first name on the line and test for the start of a new driver. A
3479 macro definition indicates the end of the previous driver. If this isn't the
3480 start of a new driver, the line will be re-read. */
3481
3482 s = readconf_readname(name, sizeof(name), buffer);
3483
3484 /* Handle macro definition, first finishing off the initialization of the
3485 previous driver, if any. */
3486
3487 if (isupper(*name) && *s == '=')
3488 {
3489 if (d != NULL)
3490 {
3491 if (d->driver_name == NULL)
3492 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
3493 "no driver defined for %s \"%s\"", class, d->name);
3494 (d->info->init)(d);
3495 d = NULL;
3496 }
3497 read_macro_assignment(buffer);
3498 continue;
3499 }
3500
3501 /* If the line starts with a name terminated by a colon, we are at the
3502 start of the definition of a new driver. The rest of the line must be
3503 blank. */
3504
3505 if (*s++ == ':')
3506 {
3507 int i;
3508
3509 /* Finish off initializing the previous driver. */
3510
3511 if (d != NULL)
3512 {
3513 if (d->driver_name == NULL)
3514 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
3515 "no driver defined for %s \"%s\"", class, d->name);
3516 (d->info->init)(d);
3517 }
3518
3519 /* Check that we haven't already got a driver of this name */
3520
3521 for (d = *anchor; d != NULL; d = d->next)
3522 if (Ustrcmp(name, d->name) == 0)
3523 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
3524 "there are two %ss called \"%s\"", class, name);
3525
3526 /* Set up a new driver instance data block on the chain, with
3527 its default values installed. */
3528
3529 d = store_get(instance_size);
3530 memcpy(d, instance_default, instance_size);
3531 *p = d;
3532 p = &(d->next);
3533 d->name = string_copy(name);
3534
3535 /* Clear out the "set" bits in the generic options */
3536
3537 for (i = 0; i < driver_optionlist_count; i++)
3538 driver_optionlist[i].type &= ~opt_set;
3539
3540 /* Check nothing more on this line, then do the next loop iteration. */
3541
3542 while (isspace(*s)) s++;
3543 if (*s != 0) extra_chars_error(s, US"driver name ", name, US"");
3544 continue;
3545 }
3546
3547 /* Not the start of a new driver. Give an error if we have not set up a
3548 current driver yet. */
3549
3550 if (d == NULL) log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
3551 "%s name missing", class);
3552
3553 /* First look to see if this is a generic option; if it is "driver",
3554 initialize the driver. If is it not a generic option, we can look for a
3555 private option provided that the driver has been previously set up. */
3556
3557 if (readconf_handle_option(buffer, driver_optionlist,
3558 driver_optionlist_count, d, NULL))
3559 {
3560 if (d->info == NULL && d->driver_name != NULL)
3561 init_driver(d, drivers_available, size_of_info, class);
3562 }
3563
3564 /* Handle private options - pass the generic block because some may
3565 live therein. A flag with each option indicates if it is in the public
3566 block. */
3567
3568 else if (d->info != NULL)
3569 {
3570 readconf_handle_option(buffer, d->info->options,
3571 *(d->info->options_count), d, US"option \"%s\" unknown");
3572 }
3573
3574 /* The option is not generic and the driver name has not yet been given. */
3575
3576 else log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "option \"%s\" unknown "
3577 "(\"driver\" must be specified before any private options)", name);
3578 }
3579
3580 /* Run the initialization function for the final driver. */
3581
3582 if (d != NULL)
3583 {
3584 if (d->driver_name == NULL)
3585 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
3586 "no driver defined for %s \"%s\"", class, d->name);
3587 (d->info->init)(d);
3588 }
3589 }
3590
3591
3592
3593 /*************************************************
3594 * Check driver dependency *
3595 *************************************************/
3596
3597 /* This function is passed a driver instance and a string. It checks whether
3598 any of the string options for the driver contains the given string as an
3599 expansion variable.
3600
3601 Arguments:
3602 d points to a driver instance block
3603 s the string to search for
3604
3605 Returns: TRUE if a dependency is found
3606 */
3607
3608 BOOL
3609 readconf_depends(driver_instance *d, uschar *s)
3610 {
3611 int count = *(d->info->options_count);
3612 optionlist *ol;
3613 uschar *ss;
3614
3615 for (ol = d->info->options; ol < d->info->options + count; ol++)
3616 {
3617 void *options_block;
3618 uschar *value;
3619 int type = ol->type & opt_mask;
3620 if (type != opt_stringptr) continue;
3621 options_block = ((ol->type & opt_public) == 0)? d->options_block : (void *)d;
3622 value = *(uschar **)((uschar *)options_block + (long int)(ol->value));
3623 if (value != NULL && (ss = Ustrstr(value, s)) != NULL)
3624 {
3625 if (ss <= value || (ss[-1] != '$' && ss[-1] != '{') ||
3626 isalnum(ss[Ustrlen(s)])) continue;
3627 DEBUG(D_transport) debug_printf("driver %s: \"%s\" option depends on %s\n",
3628 d->name, ol->name, s);
3629 return TRUE;
3630 }
3631 }
3632
3633 DEBUG(D_transport) debug_printf("driver %s does not depend on %s\n", d->name, s);
3634 return FALSE;
3635 }
3636
3637
3638
3639
3640 /*************************************************
3641 * Decode an error type for retries *
3642 *************************************************/
3643
3644 /* This function is global because it is also called from the main
3645 program when testing retry information. It decodes strings such as "quota_7d"
3646 into numerical error codes.
3647
3648 Arguments:
3649 pp points to start of text
3650 p points past end of text
3651 basic_errno points to an int to receive the main error number
3652 more_errno points to an int to receive the secondary error data
3653
3654 Returns: NULL if decoded correctly; else points to error text
3655 */
3656
3657 uschar *
3658 readconf_retry_error(uschar *pp, uschar *p, int *basic_errno, int *more_errno)
3659 {
3660 int len;
3661 uschar *q = pp;
3662 while (q < p && *q != '_') q++;
3663 len = q - pp;
3664
3665 if (len == 5 && strncmpic(pp, US"quota", len) == 0)
3666 {
3667 *basic_errno = ERRNO_EXIMQUOTA;
3668 if (q != p && (*more_errno = readconf_readtime(q+1, *p, FALSE)) < 0)
3669 return US"bad time value";
3670 }
3671
3672 else if (len == 7 && strncmpic(pp, US"refused", len) == 0)
3673 {
3674 *basic_errno = ECONNREFUSED;
3675 if (q != p)
3676 {
3677 if (strncmpic(q+1, US"MX", p-q-1) == 0) *more_errno = 'M';
3678 else if (strncmpic(q+1, US"A", p-q-1) == 0) *more_errno = 'A';
3679 else return US"A or MX expected after \"refused\"";
3680 }
3681 }
3682
3683 else if (len == 7 && strncmpic(pp, US"timeout", len) == 0)
3684 {
3685 *basic_errno = ETIMEDOUT;
3686 if (q != p)
3687 {
3688 int i;
3689 int xlen = p - q - 1;
3690 uschar *x = q + 1;
3691
3692 static uschar *extras[] =
3693 { US"A", US"MX", US"connect", US"connect_A", US"connect_MX" };
3694 static int values[] =
3695 { 'A', 'M', RTEF_CTOUT, RTEF_CTOUT|'A', RTEF_CTOUT|'M' };
3696
3697 for (i = 0; i < sizeof(extras)/sizeof(uschar *); i++)
3698 {
3699 if (strncmpic(x, extras[i], xlen) == 0)
3700 {
3701 *more_errno = values[i];
3702 break;
3703 }
3704 }
3705
3706 if (i >= sizeof(extras)/sizeof(uschar *))
3707 {
3708 if (strncmpic(x, US"DNS", xlen) == 0)
3709 {
3710 log_write(0, LOG_MAIN|LOG_PANIC, "\"timeout_dns\" is no longer "
3711 "available in retry rules (it has never worked) - treated as "
3712 "\"timeout\"");
3713 }
3714 else return US"\"A\", \"MX\", or \"connect\" expected after \"timeout\"";
3715 }
3716 }
3717 }
3718
3719 else if (strncmpic(pp, US"mail_4", 6) == 0 ||
3720 strncmpic(pp, US"rcpt_4", 6) == 0 ||
3721 strncmpic(pp, US"data_4", 6) == 0)
3722 {
3723 BOOL bad = FALSE;
3724 int x = 255; /* means "any 4xx code" */
3725 if (p != pp + 8) bad = TRUE; else
3726 {
3727 int a = pp[6], b = pp[7];
3728 if (isdigit(a))
3729 {
3730 x = (a - '0') * 10;
3731 if (isdigit(b)) x += b - '0';
3732 else if (b == 'x') x += 100;
3733 else bad = TRUE;
3734 }
3735 else if (a != 'x' || b != 'x') bad = TRUE;
3736 }
3737
3738 if (bad)
3739 return string_sprintf("%.4s_4 must be followed by xx, dx, or dd, where "
3740 "x is literal and d is any digit", pp);
3741
3742 *basic_errno = (*pp == 'm')? ERRNO_MAIL4XX :
3743 (*pp == 'r')? ERRNO_RCPT4XX : ERRNO_DATA4XX;
3744 *more_errno = x << 8;
3745 }
3746
3747 else if (len == 4 && strncmpic(pp, US"auth", len) == 0 &&
3748 strncmpic(q+1, US"failed", p-q-1) == 0)
3749 *basic_errno = ERRNO_AUTHFAIL;
3750
3751 else if (strncmpic(pp, US"lost_connection", p - pp) == 0)
3752 *basic_errno = ERRNO_SMTPCLOSED;
3753
3754 else if (strncmpic(pp, US"tls_required", p - pp) == 0)
3755 *basic_errno = ERRNO_TLSREQUIRED;
3756
3757 else if (len != 1 || Ustrncmp(pp, "*", 1) != 0)
3758 return string_sprintf("unknown or malformed retry error \"%.*s\"", (int) (p-pp), pp);
3759
3760 return NULL;
3761 }
3762
3763
3764
3765
3766 /*************************************************
3767 * Read retry information *
3768 *************************************************/
3769
3770 /* Each line of retry information contains:
3771
3772 . A domain name pattern or an address pattern;
3773
3774 . An error name, possibly with additional data, or *;
3775
3776 . An optional sequence of retry items, each consisting of an identifying
3777 letter, a cutoff time, and optional parameters.
3778
3779 All this is decoded and placed into a control block. */
3780
3781
3782 /* Subroutine to read an argument, preceded by a comma and terminated
3783 by comma, semicolon, whitespace, or newline. The types are: 0 = time value,
3784 1 = fixed point number (returned *1000).
3785
3786 Arguments:
3787 paddr pointer to pointer to current character; updated
3788 type 0 => read a time; 1 => read a fixed point number
3789
3790 Returns: time in seconds or fixed point number * 1000
3791 */
3792
3793 static int
3794 retry_arg(uschar **paddr, int type)
3795 {
3796 uschar *p = *paddr;
3797 uschar *pp;
3798
3799 if (*p++ != ',') log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "comma expected");
3800
3801 while (isspace(*p)) p++;
3802 pp = p;
3803 while (isalnum(*p) || (type == 1 && *p == '.')) p++;
3804
3805 if (*p != 0 && !isspace(*p) && *p != ',' && *p != ';')
3806 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "comma or semicolon expected");
3807
3808 *paddr = p;
3809 switch (type)
3810 {
3811 case 0:
3812 return readconf_readtime(pp, *p, FALSE);
3813 case 1:
3814 return readconf_readfixed(pp, *p);
3815 }
3816 return 0; /* Keep picky compilers happy */
3817 }
3818
3819 /* The function proper */
3820
3821 void
3822 readconf_retries(void)
3823 {
3824 retry_config **chain = &retries;
3825 retry_config *next;
3826 uschar *p;
3827
3828 while ((p = get_config_line()) != NULL)
3829 {
3830 retry_rule **rchain;
3831 uschar *pp, *error;
3832
3833 next = store_get(sizeof(retry_config));
3834 next->next = NULL;
3835 *chain = next;
3836 chain = &(next->next);
3837 next->basic_errno = next->more_errno = 0;
3838 next->senders = NULL;
3839 next->rules = NULL;
3840 rchain = &(next->rules);
3841
3842 next->pattern = string_dequote(&p);
3843 while (isspace(*p)) p++;
3844 pp = p;
3845 while (mac_isgraph(*p)) p++;
3846 if (p - pp <= 0) log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
3847 "missing error type in retry rule");
3848
3849 /* Test error names for things we understand. */
3850
3851 if ((error = readconf_retry_error(pp, p, &(next->basic_errno),
3852 &(next->more_errno))) != NULL)
3853 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "%s", error);
3854
3855 /* There may be an optional address list of senders to be used as another
3856 constraint on the rule. This was added later, so the syntax is a bit of a
3857 fudge. Anything that is not a retry rule starting "F," or "G," is treated as
3858 an address list. */
3859
3860 while (isspace(*p)) p++;
3861 if (Ustrncmp(p, "senders", 7) == 0)
3862 {
3863 p += 7;
3864 while (isspace(*p)) p++;
3865 if (*p++ != '=') log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
3866 "\"=\" expected after \"senders\" in retry rule");
3867 while (isspace(*p)) p++;
3868 next->senders = string_dequote(&p);
3869 }
3870
3871 /* Now the retry rules. Keep the maximum timeout encountered. */
3872
3873 while (isspace(*p)) p++;
3874
3875 while (*p != 0)
3876 {
3877 retry_rule *rule = store_get(sizeof(retry_rule));
3878 *rchain = rule;
3879 rchain = &(rule->next);
3880 rule->next = NULL;
3881 rule->rule = toupper(*p++);
3882 rule->timeout = retry_arg(&p, 0);
3883 if (rule->timeout > retry_maximum_timeout)
3884 retry_maximum_timeout = rule->timeout;
3885
3886 switch (rule->rule)
3887 {
3888 case 'F': /* Fixed interval */
3889 rule->p1 = retry_arg(&p, 0);
3890 break;
3891
3892 case 'G': /* Geometrically increasing intervals */
3893 case 'H': /* Ditto, but with randomness */
3894 rule->p1 = retry_arg(&p, 0);
3895 rule->p2 = retry_arg(&p, 1);
3896 break;
3897
3898 default:
3899 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "unknown retry rule letter");
3900 break;
3901 }
3902
3903 if (rule->timeout <= 0 || rule->p1 <= 0 ||
3904 (rule->rule != 'F' && rule->p2 < 1000))
3905 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
3906 "bad parameters for retry rule");
3907
3908 while (isspace(*p)) p++;
3909 if (*p == ';')
3910 {
3911 p++;
3912 while (isspace(*p)) p++;
3913 }
3914 else if (*p != 0)
3915 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "semicolon expected");
3916 }
3917 }
3918 }
3919
3920
3921
3922 /*************************************************
3923 * Initialize authenticators *
3924 *************************************************/
3925
3926 /* Read the authenticators section of the configuration file.
3927
3928 Arguments: none
3929 Returns: nothing
3930 */
3931
3932 static void
3933 auths_init(void)
3934 {
3935 auth_instance *au, *bu;
3936 readconf_driver_init(US"authenticator",
3937 (driver_instance **)(&auths), /* chain anchor */
3938 (driver_info *)auths_available, /* available drivers */
3939 sizeof(auth_info), /* size of info block */
3940 &auth_defaults, /* default values for generic options */
3941 sizeof(auth_instance), /* size of instance block */
3942 optionlist_auths, /* generic options */
3943 optionlist_auths_size);
3944
3945 for (au = auths; au != NULL; au = au->next)
3946 {
3947 if (au->public_name == NULL)
3948 log_write(0, LOG_PANIC_DIE|LOG_CONFIG, "no public name specified for "
3949 "the %s authenticator", au->name);
3950 for (bu = au->next; bu != NULL; bu = bu->next)
3951 {
3952 if (strcmpic(au->public_name, bu->public_name) == 0)
3953 {
3954 if ((au->client && bu->client) || (au->server && bu->server))
3955 log_write(0, LOG_PANIC_DIE|LOG_CONFIG, "two %s authenticators "
3956 "(%s and %s) have the same public name (%s)",
3957 (au->client)? US"client" : US"server", au->name, bu->name,
3958 au->public_name);
3959 }
3960 }
3961 }
3962 }
3963
3964
3965
3966
3967 /*************************************************
3968 * Read ACL information *
3969 *************************************************/
3970
3971 /* If this run of Exim is not doing something that involves receiving a
3972 message, we can just skip over the ACL information. No need to parse it.
3973
3974 First, we have a function for acl_read() to call back to get the next line. We
3975 need to remember the line we passed, because at the end it will contain the
3976 name of the next ACL. */
3977
3978 static uschar *acl_line;
3979
3980 static uschar *
3981 acl_callback(void)
3982 {
3983 acl_line = get_config_line();
3984 return acl_line;
3985 }
3986
3987
3988 /* Now the main function:
3989
3990 Arguments: none
3991 Returns: nothing
3992 */
3993
3994 static void
3995 readconf_acl(void)
3996 {
3997 uschar *p;
3998
3999 /* Read each ACL and add it into the tree. Macro (re)definitions are allowed
4000 between ACLs. */
4001
4002 acl_line = get_config_line();
4003
4004 while(acl_line != NULL)
4005 {
4006 uschar name[64];
4007 tree_node *node;
4008 uschar *error;
4009
4010 p = readconf_readname(name, sizeof(name), acl_line);
4011 if (isupper(*name) && *p == '=')
4012 {
4013 read_macro_assignment(acl_line);
4014 acl_line = get_config_line();
4015 continue;
4016 }
4017
4018 if (*p != ':' || name[0] == 0)
4019 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "missing or malformed ACL name");
4020
4021 node = store_get(sizeof(tree_node) + Ustrlen(name));
4022 Ustrcpy(node->name, name);
4023 if (!tree_insertnode(&acl_anchor, node))
4024 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
4025 "there are two ACLs called \"%s\"", name);
4026
4027 node->data.ptr = acl_read(acl_callback, &error);
4028
4029 if (node->data.ptr == NULL && error != NULL)
4030 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "error in ACL: %s", error);
4031 }
4032 }
4033
4034
4035
4036 /*************************************************
4037 * Read configuration for local_scan() *
4038 *************************************************/
4039
4040 /* This function is called after "begin local_scan" is encountered in the
4041 configuration file. If the local_scan() function allows for configuration
4042 options, we can process them. Otherwise, we expire in a panic.
4043
4044 Arguments: none
4045 Returns: nothing
4046 */
4047
4048 static void
4049 local_scan_init(void)
4050 {
4051 #ifndef LOCAL_SCAN_HAS_OPTIONS
4052 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "local_scan() options not supported: "
4053 "(LOCAL_SCAN_HAS_OPTIONS not defined in Local/Makefile)");
4054 #else
4055
4056 uschar *p;
4057 while ((p = get_config_line()) != NULL)
4058 {
4059 (void) readconf_handle_option(p, local_scan_options, local_scan_options_count,
4060 NULL, US"local_scan option \"%s\" unknown");
4061 }
4062 #endif
4063 }
4064
4065
4066
4067 /*************************************************
4068 * Read rest of configuration (after main) *
4069 *************************************************/
4070
4071 /* This function reads the rest of the runtime configuration, after the main
4072 configuration. It is called only when actually needed. Each subsequent section
4073 of the configuration starts with a line of the form
4074
4075 begin name
4076
4077 where the name is "routers", "transports", etc. A section is terminated by
4078 hitting the next "begin" line, and the next name is left in next_section.
4079 Because it may confuse people as to whether the names are singular or plural,
4080 we add "s" if it's missing. There is always enough room in next_section for
4081 this. This function is basically just a switch.
4082
4083 Arguments: none
4084 Returns: nothing
4085 */
4086
4087 static uschar *section_list[] = {
4088 US"acls",
4089 US"authenticators",
4090 US"local_scans",
4091 US"retrys",
4092 US"rewrites",
4093 US"routers",
4094 US"transports"};
4095
4096 void
4097 readconf_rest(void)
4098 {
4099 int had = 0;
4100
4101 while(next_section[0] != 0)
4102 {
4103 int bit;
4104 int first = 0;
4105 int last = sizeof(section_list) / sizeof(uschar *);
4106 int mid = last/2;
4107 int n = Ustrlen(next_section);
4108
4109 if (tolower(next_section[n-1]) != 's') Ustrcpy(next_section+n, "s");
4110
4111 for (;;)
4112 {
4113 int c = strcmpic(next_section, section_list[mid]);
4114 if (c == 0) break;
4115 if (c > 0) first = mid + 1; else last = mid;
4116 if (first >= last)
4117 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
4118 "\"%.*s\" is not a known configuration section name", n, next_section);
4119 mid = (last + first)/2;
4120 }
4121
4122 bit = 1 << mid;
4123 if (((had ^= bit) & bit) == 0)
4124 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
4125 "\"%.*s\" section is repeated in the configuration file", n,
4126 next_section);
4127
4128 switch(mid)
4129 {
4130 case 0: readconf_acl(); break;
4131 case 1: auths_init(); break;
4132 case 2: local_scan_init(); break;
4133 case 3: readconf_retries(); break;
4134 case 4: readconf_rewrites(); break;
4135 case 5: route_init(); break;
4136 case 6: transport_init(); break;
4137 }
4138 }
4139
4140 (void)fclose(config_file);
4141 }
4142
4143 /* vi: aw ai sw=2
4144 */
4145 /* End of readconf.c */
Unnamed repository; edit this file 'description' to name the repository.