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