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