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c145c77492020fec1d84c7199022fc91415ef610
[exim.git] / src / src / readconf.c
1 /*************************************************
2 * Exim - an Internet mail transport agent *
3 *************************************************/
4
5 /* Copyright (c) University of Cambridge 1995 - 2016 */
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 extern char **environ;
15
16 static void fn_smtp_receive_timeout(const uschar * name, const uschar * str);
17 static void save_config_line(const uschar* line);
18 static void save_config_position(const uschar *file, int line);
19 static void print_config(BOOL admin, BOOL terse);
20
21
22 #define CSTATE_STACK_SIZE 10
23
24
25 /* Structure for chain (stack) of .included files */
26
27 typedef struct config_file_item {
28 struct config_file_item *next;
29 uschar *filename;
30 FILE *file;
31 int lineno;
32 } config_file_item;
33
34 /* Structure for chain of configuration lines (-bP config) */
35
36 typedef struct config_line_item {
37 struct config_line_item *next;
38 uschar *line;
39 } config_line_item;
40
41 static config_line_item* config_lines;
42
43 /* Structure of table of conditional words and their state transitions */
44
45 typedef struct cond_item {
46 uschar *name;
47 int namelen;
48 int action1;
49 int action2;
50 int pushpop;
51 } cond_item;
52
53 /* Structure of table of syslog facility names and values */
54
55 typedef struct syslog_fac_item {
56 uschar *name;
57 int value;
58 } syslog_fac_item;
59
60 /* constants */
61 static const char * const hidden = "<value not displayable>";
62
63 /* Static variables */
64
65 static config_file_item *config_file_stack = NULL; /* For includes */
66
67 static uschar *syslog_facility_str = NULL;
68 static uschar next_section[24];
69 static uschar time_buffer[24];
70
71 /* State variables for conditional loading (.ifdef / .else / .endif) */
72
73 static int cstate = 0;
74 static int cstate_stack_ptr = -1;
75 static int cstate_stack[CSTATE_STACK_SIZE];
76
77 /* Table of state transitions for handling conditional inclusions. There are
78 four possible state transitions:
79
80 .ifdef true
81 .ifdef false
82 .elifdef true (or .else)
83 .elifdef false
84
85 .endif just causes the previous cstate to be popped off the stack */
86
87 static int next_cstate[3][4] =
88 {
89 /* State 0: reading from file, or reading until next .else or .endif */
90 { 0, 1, 2, 2 },
91 /* State 1: condition failed, skipping until next .else or .endif */
92 { 2, 2, 0, 1 },
93 /* State 2: skipping until .endif */
94 { 2, 2, 2, 2 },
95 };
96
97 /* Table of conditionals and the states to set. For each name, there are four
98 values: the length of the name (to save computing it each time), the state to
99 set if a macro was found in the line, the state to set if a macro was not found
100 in the line, and a stack manipulation setting which is:
101
102 -1 pull state value off the stack
103 0 don't alter the stack
104 +1 push value onto stack, before setting new state
105 */
106
107 static cond_item cond_list[] = {
108 { US"ifdef", 5, 0, 1, 1 },
109 { US"ifndef", 6, 1, 0, 1 },
110 { US"elifdef", 7, 2, 3, 0 },
111 { US"elifndef", 8, 3, 2, 0 },
112 { US"else", 4, 2, 2, 0 },
113 { US"endif", 5, 0, 0, -1 }
114 };
115
116 static int cond_list_size = sizeof(cond_list)/sizeof(cond_item);
117
118 /* Table of syslog facility names and their values */
119
120 static syslog_fac_item syslog_list[] = {
121 { US"mail", LOG_MAIL },
122 { US"user", LOG_USER },
123 { US"news", LOG_NEWS },
124 { US"uucp", LOG_UUCP },
125 { US"local0", LOG_LOCAL0 },
126 { US"local1", LOG_LOCAL1 },
127 { US"local2", LOG_LOCAL2 },
128 { US"local3", LOG_LOCAL3 },
129 { US"local4", LOG_LOCAL4 },
130 { US"local5", LOG_LOCAL5 },
131 { US"local6", LOG_LOCAL6 },
132 { US"local7", LOG_LOCAL7 },
133 { US"daemon", LOG_DAEMON }
134 };
135
136 static int syslog_list_size = sizeof(syslog_list)/sizeof(syslog_fac_item);
137
138
139
140
141 /*************************************************
142 * Main configuration options *
143 *************************************************/
144
145 /* The list of options that can be set in the main configuration file. This
146 must be in alphabetic order because it is searched by binary chop. */
147
148 static optionlist optionlist_config[] = {
149 { "*set_exim_group", opt_bool|opt_hidden, &exim_gid_set },
150 { "*set_exim_user", opt_bool|opt_hidden, &exim_uid_set },
151 { "*set_system_filter_group", opt_bool|opt_hidden, &system_filter_gid_set },
152 { "*set_system_filter_user", opt_bool|opt_hidden, &system_filter_uid_set },
153 { "accept_8bitmime", opt_bool, &accept_8bitmime },
154 { "acl_not_smtp", opt_stringptr, &acl_not_smtp },
155 #ifdef WITH_CONTENT_SCAN
156 { "acl_not_smtp_mime", opt_stringptr, &acl_not_smtp_mime },
157 #endif
158 { "acl_not_smtp_start", opt_stringptr, &acl_not_smtp_start },
159 { "acl_smtp_auth", opt_stringptr, &acl_smtp_auth },
160 { "acl_smtp_connect", opt_stringptr, &acl_smtp_connect },
161 { "acl_smtp_data", opt_stringptr, &acl_smtp_data },
162 #ifndef DISABLE_PRDR
163 { "acl_smtp_data_prdr", opt_stringptr, &acl_smtp_data_prdr },
164 #endif
165 #ifndef DISABLE_DKIM
166 { "acl_smtp_dkim", opt_stringptr, &acl_smtp_dkim },
167 #endif
168 { "acl_smtp_etrn", opt_stringptr, &acl_smtp_etrn },
169 { "acl_smtp_expn", opt_stringptr, &acl_smtp_expn },
170 { "acl_smtp_helo", opt_stringptr, &acl_smtp_helo },
171 { "acl_smtp_mail", opt_stringptr, &acl_smtp_mail },
172 { "acl_smtp_mailauth", opt_stringptr, &acl_smtp_mailauth },
173 #ifdef WITH_CONTENT_SCAN
174 { "acl_smtp_mime", opt_stringptr, &acl_smtp_mime },
175 #endif
176 { "acl_smtp_notquit", opt_stringptr, &acl_smtp_notquit },
177 { "acl_smtp_predata", opt_stringptr, &acl_smtp_predata },
178 { "acl_smtp_quit", opt_stringptr, &acl_smtp_quit },
179 { "acl_smtp_rcpt", opt_stringptr, &acl_smtp_rcpt },
180 #ifdef SUPPORT_TLS
181 { "acl_smtp_starttls", opt_stringptr, &acl_smtp_starttls },
182 #endif
183 { "acl_smtp_vrfy", opt_stringptr, &acl_smtp_vrfy },
184 { "add_environment", opt_stringptr, &add_environment },
185 { "admin_groups", opt_gidlist, &admin_groups },
186 { "allow_domain_literals", opt_bool, &allow_domain_literals },
187 { "allow_mx_to_ip", opt_bool, &allow_mx_to_ip },
188 { "allow_utf8_domains", opt_bool, &allow_utf8_domains },
189 { "auth_advertise_hosts", opt_stringptr, &auth_advertise_hosts },
190 { "auto_thaw", opt_time, &auto_thaw },
191 #ifdef WITH_CONTENT_SCAN
192 { "av_scanner", opt_stringptr, &av_scanner },
193 #endif
194 { "bi_command", opt_stringptr, &bi_command },
195 #ifdef EXPERIMENTAL_BRIGHTMAIL
196 { "bmi_config_file", opt_stringptr, &bmi_config_file },
197 #endif
198 { "bounce_message_file", opt_stringptr, &bounce_message_file },
199 { "bounce_message_text", opt_stringptr, &bounce_message_text },
200 { "bounce_return_body", opt_bool, &bounce_return_body },
201 { "bounce_return_linesize_limit", opt_mkint, &bounce_return_linesize_limit },
202 { "bounce_return_message", opt_bool, &bounce_return_message },
203 { "bounce_return_size_limit", opt_mkint, &bounce_return_size_limit },
204 { "bounce_sender_authentication",opt_stringptr,&bounce_sender_authentication },
205 { "callout_domain_negative_expire", opt_time, &callout_cache_domain_negative_expire },
206 { "callout_domain_positive_expire", opt_time, &callout_cache_domain_positive_expire },
207 { "callout_negative_expire", opt_time, &callout_cache_negative_expire },
208 { "callout_positive_expire", opt_time, &callout_cache_positive_expire },
209 { "callout_random_local_part",opt_stringptr, &callout_random_local_part },
210 { "check_log_inodes", opt_int, &check_log_inodes },
211 { "check_log_space", opt_Kint, &check_log_space },
212 { "check_rfc2047_length", opt_bool, &check_rfc2047_length },
213 { "check_spool_inodes", opt_int, &check_spool_inodes },
214 { "check_spool_space", opt_Kint, &check_spool_space },
215 { "chunking_advertise_hosts", opt_stringptr, &chunking_advertise_hosts },
216 { "daemon_smtp_port", opt_stringptr|opt_hidden, &daemon_smtp_port },
217 { "daemon_smtp_ports", opt_stringptr, &daemon_smtp_port },
218 { "daemon_startup_retries", opt_int, &daemon_startup_retries },
219 { "daemon_startup_sleep", opt_time, &daemon_startup_sleep },
220 #ifdef EXPERIMENTAL_DCC
221 { "dcc_direct_add_header", opt_bool, &dcc_direct_add_header },
222 { "dccifd_address", opt_stringptr, &dccifd_address },
223 { "dccifd_options", opt_stringptr, &dccifd_options },
224 #endif
225 { "delay_warning", opt_timelist, &delay_warning },
226 { "delay_warning_condition", opt_stringptr, &delay_warning_condition },
227 { "deliver_drop_privilege", opt_bool, &deliver_drop_privilege },
228 { "deliver_queue_load_max", opt_fixed, &deliver_queue_load_max },
229 { "delivery_date_remove", opt_bool, &delivery_date_remove },
230 #ifdef ENABLE_DISABLE_FSYNC
231 { "disable_fsync", opt_bool, &disable_fsync },
232 #endif
233 { "disable_ipv6", opt_bool, &disable_ipv6 },
234 #ifndef DISABLE_DKIM
235 { "dkim_verify_signers", opt_stringptr, &dkim_verify_signers },
236 #endif
237 #ifdef EXPERIMENTAL_DMARC
238 { "dmarc_forensic_sender", opt_stringptr, &dmarc_forensic_sender },
239 { "dmarc_history_file", opt_stringptr, &dmarc_history_file },
240 { "dmarc_tld_file", opt_stringptr, &dmarc_tld_file },
241 #endif
242 { "dns_again_means_nonexist", opt_stringptr, &dns_again_means_nonexist },
243 { "dns_check_names_pattern", opt_stringptr, &check_dns_names_pattern },
244 { "dns_csa_search_limit", opt_int, &dns_csa_search_limit },
245 { "dns_csa_use_reverse", opt_bool, &dns_csa_use_reverse },
246 { "dns_dnssec_ok", opt_int, &dns_dnssec_ok },
247 { "dns_ipv4_lookup", opt_stringptr, &dns_ipv4_lookup },
248 { "dns_retrans", opt_time, &dns_retrans },
249 { "dns_retry", opt_int, &dns_retry },
250 { "dns_trust_aa", opt_stringptr, &dns_trust_aa },
251 { "dns_use_edns0", opt_int, &dns_use_edns0 },
252 /* This option is now a no-op, retained for compability */
253 { "drop_cr", opt_bool, &drop_cr },
254 /*********************************************************/
255 { "dsn_advertise_hosts", opt_stringptr, &dsn_advertise_hosts },
256 { "dsn_from", opt_stringptr, &dsn_from },
257 { "envelope_to_remove", opt_bool, &envelope_to_remove },
258 { "errors_copy", opt_stringptr, &errors_copy },
259 { "errors_reply_to", opt_stringptr, &errors_reply_to },
260 #ifndef DISABLE_EVENT
261 { "event_action", opt_stringptr, &event_action },
262 #endif
263 { "exim_group", opt_gid, &exim_gid },
264 { "exim_path", opt_stringptr, &exim_path },
265 { "exim_user", opt_uid, &exim_uid },
266 { "extra_local_interfaces", opt_stringptr, &extra_local_interfaces },
267 { "extract_addresses_remove_arguments", opt_bool, &extract_addresses_remove_arguments },
268 { "finduser_retries", opt_int, &finduser_retries },
269 { "freeze_tell", opt_stringptr, &freeze_tell },
270 { "gecos_name", opt_stringptr, &gecos_name },
271 { "gecos_pattern", opt_stringptr, &gecos_pattern },
272 #ifdef SUPPORT_TLS
273 { "gnutls_allow_auto_pkcs11", opt_bool, &gnutls_allow_auto_pkcs11 },
274 { "gnutls_compat_mode", opt_bool, &gnutls_compat_mode },
275 #endif
276 { "header_line_maxsize", opt_int, &header_line_maxsize },
277 { "header_maxsize", opt_int, &header_maxsize },
278 { "headers_charset", opt_stringptr, &headers_charset },
279 { "helo_accept_junk_hosts", opt_stringptr, &helo_accept_junk_hosts },
280 { "helo_allow_chars", opt_stringptr, &helo_allow_chars },
281 { "helo_lookup_domains", opt_stringptr, &helo_lookup_domains },
282 { "helo_try_verify_hosts", opt_stringptr, &helo_try_verify_hosts },
283 { "helo_verify_hosts", opt_stringptr, &helo_verify_hosts },
284 { "hold_domains", opt_stringptr, &hold_domains },
285 { "host_lookup", opt_stringptr, &host_lookup },
286 { "host_lookup_order", opt_stringptr, &host_lookup_order },
287 { "host_reject_connection", opt_stringptr, &host_reject_connection },
288 { "hosts_connection_nolog", opt_stringptr, &hosts_connection_nolog },
289 #ifdef SUPPORT_PROXY
290 { "hosts_proxy", opt_stringptr, &hosts_proxy },
291 #endif
292 { "hosts_treat_as_local", opt_stringptr, &hosts_treat_as_local },
293 #ifdef LOOKUP_IBASE
294 { "ibase_servers", opt_stringptr, &ibase_servers },
295 #endif
296 { "ignore_bounce_errors_after", opt_time, &ignore_bounce_errors_after },
297 { "ignore_fromline_hosts", opt_stringptr, &ignore_fromline_hosts },
298 { "ignore_fromline_local", opt_bool, &ignore_fromline_local },
299 { "keep_environment", opt_stringptr, &keep_environment },
300 { "keep_malformed", opt_time, &keep_malformed },
301 #ifdef LOOKUP_LDAP
302 { "ldap_ca_cert_dir", opt_stringptr, &eldap_ca_cert_dir },
303 { "ldap_ca_cert_file", opt_stringptr, &eldap_ca_cert_file },
304 { "ldap_cert_file", opt_stringptr, &eldap_cert_file },
305 { "ldap_cert_key", opt_stringptr, &eldap_cert_key },
306 { "ldap_cipher_suite", opt_stringptr, &eldap_cipher_suite },
307 { "ldap_default_servers", opt_stringptr, &eldap_default_servers },
308 { "ldap_require_cert", opt_stringptr, &eldap_require_cert },
309 { "ldap_start_tls", opt_bool, &eldap_start_tls },
310 { "ldap_version", opt_int, &eldap_version },
311 #endif
312 { "local_from_check", opt_bool, &local_from_check },
313 { "local_from_prefix", opt_stringptr, &local_from_prefix },
314 { "local_from_suffix", opt_stringptr, &local_from_suffix },
315 { "local_interfaces", opt_stringptr, &local_interfaces },
316 { "local_scan_timeout", opt_time, &local_scan_timeout },
317 { "local_sender_retain", opt_bool, &local_sender_retain },
318 { "localhost_number", opt_stringptr, &host_number_string },
319 { "log_file_path", opt_stringptr, &log_file_path },
320 { "log_selector", opt_stringptr, &log_selector_string },
321 { "log_timezone", opt_bool, &log_timezone },
322 { "lookup_open_max", opt_int, &lookup_open_max },
323 { "max_username_length", opt_int, &max_username_length },
324 { "message_body_newlines", opt_bool, &message_body_newlines },
325 { "message_body_visible", opt_mkint, &message_body_visible },
326 { "message_id_header_domain", opt_stringptr, &message_id_domain },
327 { "message_id_header_text", opt_stringptr, &message_id_text },
328 { "message_logs", opt_bool, &message_logs },
329 { "message_size_limit", opt_stringptr, &message_size_limit },
330 #ifdef SUPPORT_MOVE_FROZEN_MESSAGES
331 { "move_frozen_messages", opt_bool, &move_frozen_messages },
332 #endif
333 { "mua_wrapper", opt_bool, &mua_wrapper },
334 #ifdef LOOKUP_MYSQL
335 { "mysql_servers", opt_stringptr, &mysql_servers },
336 #endif
337 { "never_users", opt_uidlist, &never_users },
338 #ifdef SUPPORT_TLS
339 { "openssl_options", opt_stringptr, &openssl_options },
340 #endif
341 #ifdef LOOKUP_ORACLE
342 { "oracle_servers", opt_stringptr, &oracle_servers },
343 #endif
344 { "percent_hack_domains", opt_stringptr, &percent_hack_domains },
345 #ifdef EXIM_PERL
346 { "perl_at_start", opt_bool, &opt_perl_at_start },
347 { "perl_startup", opt_stringptr, &opt_perl_startup },
348 { "perl_taintmode", opt_bool, &opt_perl_taintmode },
349 #endif
350 #ifdef LOOKUP_PGSQL
351 { "pgsql_servers", opt_stringptr, &pgsql_servers },
352 #endif
353 { "pid_file_path", opt_stringptr, &pid_file_path },
354 { "pipelining_advertise_hosts", opt_stringptr, &pipelining_advertise_hosts },
355 #ifndef DISABLE_PRDR
356 { "prdr_enable", opt_bool, &prdr_enable },
357 #endif
358 { "preserve_message_logs", opt_bool, &preserve_message_logs },
359 { "primary_hostname", opt_stringptr, &primary_hostname },
360 { "print_topbitchars", opt_bool, &print_topbitchars },
361 { "process_log_path", opt_stringptr, &process_log_path },
362 { "prod_requires_admin", opt_bool, &prod_requires_admin },
363 { "qualify_domain", opt_stringptr, &qualify_domain_sender },
364 { "qualify_recipient", opt_stringptr, &qualify_domain_recipient },
365 { "queue_domains", opt_stringptr, &queue_domains },
366 { "queue_list_requires_admin",opt_bool, &queue_list_requires_admin },
367 { "queue_only", opt_bool, &queue_only },
368 { "queue_only_file", opt_stringptr, &queue_only_file },
369 { "queue_only_load", opt_fixed, &queue_only_load },
370 { "queue_only_load_latch", opt_bool, &queue_only_load_latch },
371 { "queue_only_override", opt_bool, &queue_only_override },
372 { "queue_run_in_order", opt_bool, &queue_run_in_order },
373 { "queue_run_max", opt_stringptr, &queue_run_max },
374 { "queue_smtp_domains", opt_stringptr, &queue_smtp_domains },
375 { "receive_timeout", opt_time, &receive_timeout },
376 { "received_header_text", opt_stringptr, &received_header_text },
377 { "received_headers_max", opt_int, &received_headers_max },
378 { "recipient_unqualified_hosts", opt_stringptr, &recipient_unqualified_hosts },
379 { "recipients_max", opt_int, &recipients_max },
380 { "recipients_max_reject", opt_bool, &recipients_max_reject },
381 #ifdef LOOKUP_REDIS
382 { "redis_servers", opt_stringptr, &redis_servers },
383 #endif
384 { "remote_max_parallel", opt_int, &remote_max_parallel },
385 { "remote_sort_domains", opt_stringptr, &remote_sort_domains },
386 { "retry_data_expire", opt_time, &retry_data_expire },
387 { "retry_interval_max", opt_time, &retry_interval_max },
388 { "return_path_remove", opt_bool, &return_path_remove },
389 { "return_size_limit", opt_mkint|opt_hidden, &bounce_return_size_limit },
390 { "rfc1413_hosts", opt_stringptr, &rfc1413_hosts },
391 { "rfc1413_query_timeout", opt_time, &rfc1413_query_timeout },
392 { "sender_unqualified_hosts", opt_stringptr, &sender_unqualified_hosts },
393 { "slow_lookup_log", opt_int, &slow_lookup_log },
394 { "smtp_accept_keepalive", opt_bool, &smtp_accept_keepalive },
395 { "smtp_accept_max", opt_int, &smtp_accept_max },
396 { "smtp_accept_max_nonmail", opt_int, &smtp_accept_max_nonmail },
397 { "smtp_accept_max_nonmail_hosts", opt_stringptr, &smtp_accept_max_nonmail_hosts },
398 { "smtp_accept_max_per_connection", opt_int, &smtp_accept_max_per_connection },
399 { "smtp_accept_max_per_host", opt_stringptr, &smtp_accept_max_per_host },
400 { "smtp_accept_queue", opt_int, &smtp_accept_queue },
401 { "smtp_accept_queue_per_connection", opt_int, &smtp_accept_queue_per_connection },
402 { "smtp_accept_reserve", opt_int, &smtp_accept_reserve },
403 { "smtp_active_hostname", opt_stringptr, &raw_active_hostname },
404 { "smtp_banner", opt_stringptr, &smtp_banner },
405 { "smtp_check_spool_space", opt_bool, &smtp_check_spool_space },
406 { "smtp_connect_backlog", opt_int, &smtp_connect_backlog },
407 { "smtp_enforce_sync", opt_bool, &smtp_enforce_sync },
408 { "smtp_etrn_command", opt_stringptr, &smtp_etrn_command },
409 { "smtp_etrn_serialize", opt_bool, &smtp_etrn_serialize },
410 { "smtp_load_reserve", opt_fixed, &smtp_load_reserve },
411 { "smtp_max_synprot_errors", opt_int, &smtp_max_synprot_errors },
412 { "smtp_max_unknown_commands",opt_int, &smtp_max_unknown_commands },
413 { "smtp_ratelimit_hosts", opt_stringptr, &smtp_ratelimit_hosts },
414 { "smtp_ratelimit_mail", opt_stringptr, &smtp_ratelimit_mail },
415 { "smtp_ratelimit_rcpt", opt_stringptr, &smtp_ratelimit_rcpt },
416 { "smtp_receive_timeout", opt_func, &fn_smtp_receive_timeout },
417 { "smtp_reserve_hosts", opt_stringptr, &smtp_reserve_hosts },
418 { "smtp_return_error_details",opt_bool, &smtp_return_error_details },
419 #ifdef SUPPORT_I18N
420 { "smtputf8_advertise_hosts", opt_stringptr, &smtputf8_advertise_hosts },
421 #endif
422 #ifdef WITH_CONTENT_SCAN
423 { "spamd_address", opt_stringptr, &spamd_address },
424 #endif
425 #ifdef EXPERIMENTAL_SPF
426 { "spf_guess", opt_stringptr, &spf_guess },
427 #endif
428 { "split_spool_directory", opt_bool, &split_spool_directory },
429 { "spool_directory", opt_stringptr, &spool_directory },
430 #ifdef LOOKUP_SQLITE
431 { "sqlite_lock_timeout", opt_int, &sqlite_lock_timeout },
432 #endif
433 #ifdef EXPERIMENTAL_SRS
434 { "srs_config", opt_stringptr, &srs_config },
435 { "srs_hashlength", opt_int, &srs_hashlength },
436 { "srs_hashmin", opt_int, &srs_hashmin },
437 { "srs_maxage", opt_int, &srs_maxage },
438 { "srs_secrets", opt_stringptr, &srs_secrets },
439 { "srs_usehash", opt_bool, &srs_usehash },
440 { "srs_usetimestamp", opt_bool, &srs_usetimestamp },
441 #endif
442 { "strict_acl_vars", opt_bool, &strict_acl_vars },
443 { "strip_excess_angle_brackets", opt_bool, &strip_excess_angle_brackets },
444 { "strip_trailing_dot", opt_bool, &strip_trailing_dot },
445 { "syslog_duplication", opt_bool, &syslog_duplication },
446 { "syslog_facility", opt_stringptr, &syslog_facility_str },
447 { "syslog_processname", opt_stringptr, &syslog_processname },
448 { "syslog_timestamp", opt_bool, &syslog_timestamp },
449 { "system_filter", opt_stringptr, &system_filter },
450 { "system_filter_directory_transport", opt_stringptr,&system_filter_directory_transport },
451 { "system_filter_file_transport",opt_stringptr,&system_filter_file_transport },
452 { "system_filter_group", opt_gid, &system_filter_gid },
453 { "system_filter_pipe_transport",opt_stringptr,&system_filter_pipe_transport },
454 { "system_filter_reply_transport",opt_stringptr,&system_filter_reply_transport },
455 { "system_filter_user", opt_uid, &system_filter_uid },
456 { "tcp_nodelay", opt_bool, &tcp_nodelay },
457 #ifdef USE_TCP_WRAPPERS
458 { "tcp_wrappers_daemon_name", opt_stringptr, &tcp_wrappers_daemon_name },
459 #endif
460 { "timeout_frozen_after", opt_time, &timeout_frozen_after },
461 { "timezone", opt_stringptr, &timezone_string },
462 { "tls_advertise_hosts", opt_stringptr, &tls_advertise_hosts },
463 #ifdef SUPPORT_TLS
464 { "tls_certificate", opt_stringptr, &tls_certificate },
465 { "tls_crl", opt_stringptr, &tls_crl },
466 { "tls_dh_max_bits", opt_int, &tls_dh_max_bits },
467 { "tls_dhparam", opt_stringptr, &tls_dhparam },
468 { "tls_eccurve", opt_stringptr, &tls_eccurve },
469 # ifndef DISABLE_OCSP
470 { "tls_ocsp_file", opt_stringptr, &tls_ocsp_file },
471 # endif
472 { "tls_on_connect_ports", opt_stringptr, &tls_in.on_connect_ports },
473 { "tls_privatekey", opt_stringptr, &tls_privatekey },
474 { "tls_remember_esmtp", opt_bool, &tls_remember_esmtp },
475 { "tls_require_ciphers", opt_stringptr, &tls_require_ciphers },
476 { "tls_try_verify_hosts", opt_stringptr, &tls_try_verify_hosts },
477 { "tls_verify_certificates", opt_stringptr, &tls_verify_certificates },
478 { "tls_verify_hosts", opt_stringptr, &tls_verify_hosts },
479 #endif
480 { "trusted_groups", opt_gidlist, &trusted_groups },
481 { "trusted_users", opt_uidlist, &trusted_users },
482 { "unknown_login", opt_stringptr, &unknown_login },
483 { "unknown_username", opt_stringptr, &unknown_username },
484 { "untrusted_set_sender", opt_stringptr, &untrusted_set_sender },
485 { "uucp_from_pattern", opt_stringptr, &uucp_from_pattern },
486 { "uucp_from_sender", opt_stringptr, &uucp_from_sender },
487 { "warn_message_file", opt_stringptr, &warn_message_file },
488 { "write_rejectlog", opt_bool, &write_rejectlog }
489 };
490
491 static int optionlist_config_size =
492 sizeof(optionlist_config)/sizeof(optionlist);
493
494
495
496 /*************************************************
497 * Find the name of an option *
498 *************************************************/
499
500 /* This function is to aid debugging. Various functions take arguments that are
501 pointer variables in the options table or in option tables for various drivers.
502 For debugging output, it is useful to be able to find the name of the option
503 which is currently being processed. This function finds it, if it exists, by
504 searching the table(s).
505
506 Arguments: a value that is presumed to be in the table above
507 Returns: the option name, or an empty string
508 */
509
510 uschar *
511 readconf_find_option(void *p)
512 {
513 int i;
514 router_instance *r;
515 transport_instance *t;
516
517 for (i = 0; i < optionlist_config_size; i++)
518 if (p == optionlist_config[i].value) return US optionlist_config[i].name;
519
520 for (r = routers; r != NULL; r = r->next)
521 {
522 router_info *ri = r->info;
523 for (i = 0; i < *ri->options_count; i++)
524 {
525 if ((ri->options[i].type & opt_mask) != opt_stringptr) continue;
526 if (p == (char *)(r->options_block) + (long int)(ri->options[i].value))
527 return US ri->options[i].name;
528 }
529 }
530
531 for (t = transports; t != NULL; t = t->next)
532 {
533 transport_info *ti = t->info;
534 for (i = 0; i < *ti->options_count; i++)
535 {
536 optionlist * op = &ti->options[i];
537 if ((op->type & opt_mask) != opt_stringptr) continue;
538 if (p == ( op->type & opt_public
539 ? (char *)t
540 : (char *)t->options_block
541 )
542 + (long int)op->value)
543 return US op->name;
544 }
545 }
546
547 return US"";
548 }
549
550
551
552
553 /*************************************************
554 * Deal with an assignment to a macro *
555 *************************************************/
556
557 /* This function is called when a line that starts with an upper case letter is
558 encountered. The argument "line" should contain a complete logical line, and
559 start with the first letter of the macro name. The macro name and the
560 replacement text are extracted and stored. Redefinition of existing,
561 non-command line, macros is permitted using '==' instead of '='.
562
563 Arguments:
564 s points to the start of the logical line
565
566 Returns: nothing
567 */
568
569 static void
570 read_macro_assignment(uschar *s)
571 {
572 uschar name[64];
573 int namelen = 0;
574 BOOL redef = FALSE;
575 macro_item *m;
576 macro_item *mlast = NULL;
577
578 while (isalnum(*s) || *s == '_')
579 {
580 if (namelen >= sizeof(name) - 1)
581 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
582 "macro name too long (maximum is " SIZE_T_FMT " characters)", sizeof(name) - 1);
583 name[namelen++] = *s++;
584 }
585 name[namelen] = 0;
586
587 while (isspace(*s)) s++;
588 if (*s++ != '=')
589 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "malformed macro definition");
590
591 if (*s == '=')
592 {
593 redef = TRUE;
594 s++;
595 }
596 while (isspace(*s)) s++;
597
598 /* If an existing macro of the same name was defined on the command line, we
599 just skip this definition. It's an error to attempt to redefine a macro without
600 redef set to TRUE, or to redefine a macro when it hasn't been defined earlier.
601 It is also an error to define a macro whose name begins with the name of a
602 previously defined macro. Note: it is documented that the other way round
603 works. */
604
605 for (m = macros; m != NULL; m = m->next)
606 {
607 int len = Ustrlen(m->name);
608
609 if (Ustrcmp(m->name, name) == 0)
610 {
611 if (!m->command_line && !redef)
612 log_write(0, LOG_CONFIG|LOG_PANIC_DIE, "macro \"%s\" is already "
613 "defined (use \"==\" if you want to redefine it", name);
614 break;
615 }
616
617 if (len < namelen && Ustrstr(name, m->name) != NULL)
618 log_write(0, LOG_CONFIG|LOG_PANIC_DIE, "\"%s\" cannot be defined as "
619 "a macro because previously defined macro \"%s\" is a substring",
620 name, m->name);
621
622 /* We cannot have this test, because it is documented that a substring
623 macro is permitted (there is even an example).
624 *
625 * if (len > namelen && Ustrstr(m->name, name) != NULL)
626 * log_write(0, LOG_CONFIG|LOG_PANIC_DIE, "\"%s\" cannot be defined as "
627 * "a macro because it is a substring of previously defined macro \"%s\"",
628 * name, m->name);
629 */
630
631 mlast = m;
632 }
633
634 /* Check for an overriding command-line definition. */
635
636 if (m != NULL && m->command_line) return;
637
638 /* Redefinition must refer to an existing macro. */
639
640 if (redef)
641 {
642 if (m == NULL)
643 log_write(0, LOG_CONFIG|LOG_PANIC_DIE, "can't redefine an undefined macro "
644 "\"%s\"", name);
645 }
646
647 /* We have a new definition. The macro_item structure includes a final vector
648 called "name" which is one byte long. Thus, adding "namelen" gives us enough
649 room to store the "name" string. */
650
651 else
652 {
653 m = store_get(sizeof(macro_item) + namelen);
654 if (macros == NULL) macros = m; else mlast->next = m;
655 Ustrncpy(m->name, name, namelen);
656 m->name[namelen] = 0;
657 m->next = NULL;
658 m->command_line = FALSE;
659 }
660
661 /* Set the value of the new or redefined macro */
662
663 m->replacement = string_copy(s);
664 }
665
666
667
668
669
670 /*************************************************
671 * Read configuration line *
672 *************************************************/
673
674 /* A logical line of text is read from the configuration file into the big
675 buffer, taking account of macros, .includes, and continuations. The size of
676 big_buffer is increased if necessary. The count of configuration lines is
677 maintained. Physical input lines starting with # (ignoring leading white space,
678 and after macro replacement) and empty logical lines are always ignored.
679 Leading and trailing spaces are removed.
680
681 If we hit a line of the form "begin xxxx", the xxxx is placed in the
682 next_section vector, and the function returns NULL, indicating the end of a
683 configuration section. On end-of-file, NULL is returned with next_section
684 empty.
685
686 Arguments: none
687
688 Returns: a pointer to the first non-blank in the line,
689 or NULL if eof or end of section is reached
690 */
691
692 static uschar *
693 get_config_line(void)
694 {
695 int startoffset = 0; /* To first non-blank char in logical line */
696 int len = 0; /* Of logical line so far */
697 int newlen;
698 uschar *s, *ss;
699 macro_item *m;
700 BOOL macro_found;
701
702 /* Loop for handling continuation lines, skipping comments, and dealing with
703 .include files. */
704
705 for (;;)
706 {
707 if (Ufgets(big_buffer+len, big_buffer_size-len, config_file) == NULL)
708 {
709 if (config_file_stack != NULL) /* EOF inside .include */
710 {
711 (void)fclose(config_file);
712 config_file = config_file_stack->file;
713 config_filename = config_file_stack->filename;
714 config_lineno = config_file_stack->lineno;
715 config_file_stack = config_file_stack->next;
716 if (config_lines)
717 save_config_position(config_filename, config_lineno);
718 continue;
719 }
720
721 /* EOF at top level */
722
723 if (cstate_stack_ptr >= 0)
724 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
725 "Unexpected end of configuration file: .endif missing");
726
727 if (len != 0) break; /* EOF after continuation */
728 next_section[0] = 0; /* EOF at start of logical line */
729 return NULL;
730 }
731
732 config_lineno++;
733 newlen = len + Ustrlen(big_buffer + len);
734
735 if (config_lines && config_lineno == 1)
736 save_config_position(config_filename, config_lineno);
737
738 /* Handle pathologically long physical lines - yes, it did happen - by
739 extending big_buffer at this point. The code also copes with very long
740 logical lines. */
741
742 while (newlen == big_buffer_size - 1 && big_buffer[newlen - 1] != '\n')
743 {
744 uschar *newbuffer;
745 big_buffer_size += BIG_BUFFER_SIZE;
746 newbuffer = store_malloc(big_buffer_size);
747
748 /* This use of strcpy is OK because we know that the string in the old
749 buffer is shorter than the new buffer. */
750
751 Ustrcpy(newbuffer, big_buffer);
752 store_free(big_buffer);
753 big_buffer = newbuffer;
754 if (Ufgets(big_buffer+newlen, big_buffer_size-newlen, config_file) == NULL)
755 break;
756 newlen += Ustrlen(big_buffer + newlen);
757 }
758
759 /* Find the true start of the physical line - leading spaces are always
760 ignored. */
761
762 ss = big_buffer + len;
763 while (isspace(*ss)) ss++;
764
765 /* Process the physical line for macros. If this is the start of the logical
766 line, skip over initial text at the start of the line if it starts with an
767 upper case character followed by a sequence of name characters and an equals
768 sign, because that is the definition of a new macro, and we don't do
769 replacement therein. */
770
771 s = ss;
772 if (len == 0 && isupper(*s))
773 {
774 while (isalnum(*s) || *s == '_') s++;
775 while (isspace(*s)) s++;
776 if (*s != '=') s = ss; /* Not a macro definition */
777 }
778
779 /* For each defined macro, scan the line (from after XXX= if present),
780 replacing all occurrences of the macro. */
781
782 macro_found = FALSE;
783 for (m = macros; m != NULL; m = m->next)
784 {
785 uschar *p, *pp;
786 uschar *t = s;
787
788 while ((p = Ustrstr(t, m->name)) != NULL)
789 {
790 int moveby;
791 int namelen = Ustrlen(m->name);
792 int replen = Ustrlen(m->replacement);
793
794 /* Expand the buffer if necessary */
795
796 while (newlen - namelen + replen + 1 > big_buffer_size)
797 {
798 int newsize = big_buffer_size + BIG_BUFFER_SIZE;
799 uschar *newbuffer = store_malloc(newsize);
800 memcpy(newbuffer, big_buffer, newlen + 1);
801 p = newbuffer + (p - big_buffer);
802 s = newbuffer + (s - big_buffer);
803 ss = newbuffer + (ss - big_buffer);
804 t = newbuffer + (t - big_buffer);
805 big_buffer_size = newsize;
806 store_free(big_buffer);
807 big_buffer = newbuffer;
808 }
809
810 /* Shuffle the remaining characters up or down in the buffer before
811 copying in the replacement text. Don't rescan the replacement for this
812 same macro. */
813
814 pp = p + namelen;
815 moveby = replen - namelen;
816 if (moveby != 0)
817 {
818 memmove(p + replen, pp, (big_buffer + newlen) - pp + 1);
819 newlen += moveby;
820 }
821 Ustrncpy(p, m->replacement, replen);
822 t = p + replen;
823 macro_found = TRUE;
824 }
825 }
826
827 /* An empty macro replacement at the start of a line could mean that ss no
828 longer points to the first non-blank character. */
829
830 while (isspace(*ss)) ss++;
831
832 /* Check for comment lines - these are physical lines. */
833
834 if (*ss == '#') continue;
835
836 /* Handle conditionals, which are also applied to physical lines. Conditions
837 are of the form ".ifdef ANYTEXT" and are treated as true if any macro
838 expansion occured on the rest of the line. A preliminary test for the leading
839 '.' saves effort on most lines. */
840
841 if (*ss == '.')
842 {
843 int i;
844
845 /* Search the list of conditional directives */
846
847 for (i = 0; i < cond_list_size; i++)
848 {
849 int n;
850 cond_item *c = cond_list+i;
851 if (Ustrncmp(ss+1, c->name, c->namelen) != 0) continue;
852
853 /* The following character must be white space or end of string */
854
855 n = ss[1 + c->namelen];
856 if (n != ' ' && n != 't' && n != '\n' && n != 0) break;
857
858 /* .ifdef and .ifndef push the current state onto the stack, then set
859 a new one from the table. Stack overflow is an error */
860
861 if (c->pushpop > 0)
862 {
863 if (cstate_stack_ptr >= CSTATE_STACK_SIZE - 1)
864 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
865 ".%s nested too deeply", c->name);
866 cstate_stack[++cstate_stack_ptr] = cstate;
867 cstate = next_cstate[cstate][macro_found? c->action1 : c->action2];
868 }
869
870 /* For any of the others, stack underflow is an error. The next state
871 comes either from the stack (.endif) or from the table. */
872
873 else
874 {
875 if (cstate_stack_ptr < 0)
876 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
877 ".%s without matching .ifdef", c->name);
878 cstate = (c->pushpop < 0)? cstate_stack[cstate_stack_ptr--] :
879 next_cstate[cstate][macro_found? c->action1 : c->action2];
880 }
881
882 /* Having dealt with a directive, break the loop */
883
884 break;
885 }
886
887 /* If we have handled a conditional directive, continue with the next
888 physical line. Otherwise, fall through. */
889
890 if (i < cond_list_size) continue;
891 }
892
893 /* If the conditional state is not 0 (actively using these lines), ignore
894 this input line. */
895
896 if (cstate != 0) continue; /* Conditional skip */
897
898 /* Handle .include lines - these are also physical lines. */
899
900 if (Ustrncmp(ss, ".include", 8) == 0 &&
901 (isspace(ss[8]) ||
902 (Ustrncmp(ss+8, "_if_exists", 10) == 0 && isspace(ss[18]))))
903 {
904 uschar *t;
905 int include_if_exists = isspace(ss[8])? 0 : 10;
906 config_file_item *save;
907 struct stat statbuf;
908
909 ss += 9 + include_if_exists;
910 while (isspace(*ss)) ss++;
911 t = ss + Ustrlen(ss);
912 while (t > ss && isspace(t[-1])) t--;
913 if (*ss == '\"' && t[-1] == '\"')
914 {
915 ss++;
916 t--;
917 }
918 *t = 0;
919
920 if (*ss != '/')
921 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, ".include specifies a non-"
922 "absolute path \"%s\"", ss);
923
924 if (include_if_exists != 0 && (Ustat(ss, &statbuf) != 0)) continue;
925
926 if (config_lines)
927 save_config_position(config_filename, config_lineno);
928 save = store_get(sizeof(config_file_item));
929 save->next = config_file_stack;
930 config_file_stack = save;
931 save->file = config_file;
932 save->filename = config_filename;
933 save->lineno = config_lineno;
934
935 if (!(config_file = Ufopen(ss, "rb")))
936 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "failed to open included "
937 "configuration file %s", ss);
938
939 config_filename = string_copy(ss);
940 config_lineno = 0;
941 continue;
942 }
943
944 /* If this is the start of the logical line, remember where the non-blank
945 data starts. Otherwise shuffle down continuation lines to remove leading
946 white space. */
947
948 if (len == 0)
949 startoffset = ss - big_buffer;
950 else
951 {
952 s = big_buffer + len;
953 if (ss > s)
954 {
955 memmove(s, ss, (newlen - len) - (ss - s) + 1);
956 newlen -= ss - s;
957 }
958 }
959
960 /* Accept the new addition to the line. Remove trailing white space. */
961
962 len = newlen;
963 while (len > 0 && isspace(big_buffer[len-1])) len--;
964 big_buffer[len] = 0;
965
966 /* We are done if the line does not end in backslash and contains some data.
967 Empty logical lines are ignored. For continuations, remove the backslash and
968 go round the loop to read the continuation line. */
969
970 if (len > 0)
971 {
972 if (big_buffer[len-1] != '\\') break; /* End of logical line */
973 big_buffer[--len] = 0; /* Remove backslash */
974 }
975 } /* Loop for reading multiple physical lines */
976
977 /* We now have a logical line. Test for the end of a configuration section (or,
978 more accurately, for the start of the next section). Place the name of the next
979 section in next_section, and return NULL. If the name given is longer than
980 next_section, truncate it. It will be unrecognized later, because all the known
981 section names do fit. Leave space for pluralizing. */
982
983 s = big_buffer + startoffset; /* First non-space character */
984
985 if (config_lines)
986 save_config_line(s);
987
988 if (strncmpic(s, US"begin ", 6) == 0)
989 {
990 s += 6;
991 while (isspace(*s)) s++;
992 if (big_buffer + len - s > sizeof(next_section) - 2)
993 s[sizeof(next_section) - 2] = 0;
994 Ustrcpy(next_section, s);
995 return NULL;
996 }
997
998 /* Return the first non-blank character. */
999
1000 return s;
1001 }
1002
1003
1004
1005 /*************************************************
1006 * Read a name *
1007 *************************************************/
1008
1009 /* The yield is the pointer to the next uschar. Names longer than the
1010 output space are silently truncated. This function is also used from acl.c when
1011 parsing ACLs.
1012
1013 Arguments:
1014 name where to put the name
1015 len length of name
1016 s input pointer
1017
1018 Returns: new input pointer
1019 */
1020
1021 uschar *
1022 readconf_readname(uschar *name, int len, uschar *s)
1023 {
1024 int p = 0;
1025 while (isspace(*s)) s++;
1026 if (isalpha(*s))
1027 {
1028 while (isalnum(*s) || *s == '_')
1029 {
1030 if (p < len-1) name[p++] = *s;
1031 s++;
1032 }
1033 }
1034 name[p] = 0;
1035 while (isspace(*s)) s++;
1036 return s;
1037 }
1038
1039
1040
1041
1042 /*************************************************
1043 * Read a time value *
1044 *************************************************/
1045
1046 /* This function is also called from outside, to read argument
1047 time values. The format of a time value is:
1048
1049 [<n>w][<n>d][<n>h][<n>m][<n>s]
1050
1051 as long as at least one is present. If a format error is encountered,
1052 return a negative value. The value must be terminated by the given
1053 terminator.
1054
1055 Arguments:
1056 s input pointer
1057 terminator required terminating character
1058 return_msec if TRUE, allow fractional seconds and return milliseconds
1059
1060 Returns: the time value, or -1 on syntax error
1061 value is seconds if return_msec is FALSE
1062 value is milliseconds if return_msec is TRUE
1063 */
1064
1065 int
1066 readconf_readtime(const uschar *s, int terminator, BOOL return_msec)
1067 {
1068 int yield = 0;
1069 for (;;)
1070 {
1071 int value, count;
1072 double fraction;
1073
1074 if (!isdigit(*s)) return -1;
1075 (void)sscanf(CCS s, "%d%n", &value, &count);
1076 s += count;
1077
1078 switch (*s)
1079 {
1080 case 'w': value *= 7;
1081 case 'd': value *= 24;
1082 case 'h': value *= 60;
1083 case 'm': value *= 60;
1084 case 's': s++;
1085 break;
1086
1087 case '.':
1088 if (!return_msec) return -1;
1089 (void)sscanf(CCS s, "%lf%n", &fraction, &count);
1090 s += count;
1091 if (*s++ != 's') return -1;
1092 yield += (int)(fraction * 1000.0);
1093 break;
1094
1095 default: return -1;
1096 }
1097
1098 if (return_msec) value *= 1000;
1099 yield += value;
1100 if (*s == terminator) return yield;
1101 }
1102 /* Control never reaches here. */
1103 }
1104
1105
1106
1107 /*************************************************
1108 * Read a fixed point value *
1109 *************************************************/
1110
1111 /* The value is returned *1000
1112
1113 Arguments:
1114 s input pointer
1115 terminator required terminator
1116
1117 Returns: the value, or -1 on error
1118 */
1119
1120 static int
1121 readconf_readfixed(const uschar *s, int terminator)
1122 {
1123 int yield = 0;
1124 int value, count;
1125 if (!isdigit(*s)) return -1;
1126 (void)sscanf(CS s, "%d%n", &value, &count);
1127 s += count;
1128 yield = value * 1000;
1129 if (*s == '.')
1130 {
1131 int m = 100;
1132 while (isdigit((*(++s))))
1133 {
1134 yield += (*s - '0') * m;
1135 m /= 10;
1136 }
1137 }
1138
1139 return (*s == terminator)? yield : (-1);
1140 }
1141
1142
1143
1144 /*************************************************
1145 * Find option in list *
1146 *************************************************/
1147
1148 /* The lists are always in order, so binary chop can be used.
1149
1150 Arguments:
1151 name the option name to search for
1152 ol the first entry in the option list
1153 last one more than the offset of the last entry in the option list
1154
1155 Returns: pointer to an option entry, or NULL if not found
1156 */
1157
1158 static optionlist *
1159 find_option(uschar *name, optionlist *ol, int last)
1160 {
1161 int first = 0;
1162 while (last > first)
1163 {
1164 int middle = (first + last)/2;
1165 int c = Ustrcmp(name, ol[middle].name);
1166 if (c == 0) return ol + middle;
1167 else if (c > 0) first = middle + 1;
1168 else last = middle;
1169 }
1170 return NULL;
1171 }
1172
1173
1174
1175 /*************************************************
1176 * Find a set flag in option list *
1177 *************************************************/
1178
1179 /* Because some versions of Unix make no restrictions on the values of uids and
1180 gids (even negative ones), we cannot represent "unset" by a special value.
1181 There is therefore a separate boolean variable for each one indicating whether
1182 a value is set or not. This function returns a pointer to the boolean, given
1183 the original option name. It is a major disaster if the flag cannot be found.
1184
1185 Arguments:
1186 name the name of the uid or gid option
1187 oltop points to the start of the relevant option list
1188 last one more than the offset of the last item in the option list
1189 data_block NULL when reading main options => data values in the option
1190 list are absolute addresses; otherwise they are byte offsets
1191 in data_block (used for driver options)
1192
1193 Returns: a pointer to the boolean flag.
1194 */
1195
1196 static BOOL *
1197 get_set_flag(uschar *name, optionlist *oltop, int last, void *data_block)
1198 {
1199 optionlist *ol;
1200 uschar name2[64];
1201 sprintf(CS name2, "*set_%.50s", name);
1202 ol = find_option(name2, oltop, last);
1203 if (ol == NULL) log_write(0, LOG_MAIN|LOG_PANIC_DIE,
1204 "Exim internal error: missing set flag for %s", name);
1205 return (data_block == NULL)? (BOOL *)(ol->value) :
1206 (BOOL *)((uschar *)data_block + (long int)(ol->value));
1207 }
1208
1209
1210
1211
1212 /*************************************************
1213 * Output extra characters message and die *
1214 *************************************************/
1215
1216 /* Called when an option line has junk on the end. Sometimes this is because
1217 the sysadmin thinks comments are permitted.
1218
1219 Arguments:
1220 s points to the extra characters
1221 t1..t3 strings to insert in the log message
1222
1223 Returns: doesn't return; dies
1224 */
1225
1226 static void
1227 extra_chars_error(const uschar *s, const uschar *t1, const uschar *t2, const uschar *t3)
1228 {
1229 uschar *comment = US"";
1230 if (*s == '#') comment = US" (# is comment only at line start)";
1231 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1232 "extra characters follow %s%s%s%s", t1, t2, t3, comment);
1233 }
1234
1235
1236
1237 /*************************************************
1238 * Read rewrite information *
1239 *************************************************/
1240
1241 /* Each line of rewrite information contains:
1242
1243 . A complete address in the form user@domain, possibly with
1244 leading * for each part; or alternatively, a regex.
1245
1246 . A replacement string (which will be expanded).
1247
1248 . An optional sequence of one-letter flags, indicating which
1249 headers etc. to apply this rule to.
1250
1251 All this is decoded and placed into a control block. The OR of the flags is
1252 maintained in a common word.
1253
1254 Arguments:
1255 p points to the string that makes up the rule
1256 existflags points to the overall flag word
1257 isglobal TRUE if reading global rewrite rules
1258
1259 Returns: the control block for the parsed rule.
1260 */
1261
1262 static rewrite_rule *
1263 readconf_one_rewrite(const uschar *p, int *existflags, BOOL isglobal)
1264 {
1265 rewrite_rule *next = store_get(sizeof(rewrite_rule));
1266
1267 next->next = NULL;
1268 next->key = string_dequote(&p);
1269
1270 while (isspace(*p)) p++;
1271 if (*p == 0)
1272 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1273 "missing rewrite replacement string");
1274
1275 next->flags = 0;
1276 next->replacement = string_dequote(&p);
1277
1278 while (*p != 0) switch (*p++)
1279 {
1280 case ' ': case '\t': break;
1281
1282 case 'q': next->flags |= rewrite_quit; break;
1283 case 'w': next->flags |= rewrite_whole; break;
1284
1285 case 'h': next->flags |= rewrite_all_headers; break;
1286 case 's': next->flags |= rewrite_sender; break;
1287 case 'f': next->flags |= rewrite_from; break;
1288 case 't': next->flags |= rewrite_to; break;
1289 case 'c': next->flags |= rewrite_cc; break;
1290 case 'b': next->flags |= rewrite_bcc; break;
1291 case 'r': next->flags |= rewrite_replyto; break;
1292
1293 case 'E': next->flags |= rewrite_all_envelope; break;
1294 case 'F': next->flags |= rewrite_envfrom; break;
1295 case 'T': next->flags |= rewrite_envto; break;
1296
1297 case 'Q': next->flags |= rewrite_qualify; break;
1298 case 'R': next->flags |= rewrite_repeat; break;
1299
1300 case 'S':
1301 next->flags |= rewrite_smtp;
1302 if (next->key[0] != '^' && Ustrncmp(next->key, "\\N^", 3) != 0)
1303 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1304 "rewrite rule has the S flag but is not a regular expression");
1305 break;
1306
1307 default:
1308 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1309 "unknown rewrite flag character '%c' "
1310 "(could be missing quotes round replacement item)", p[-1]);
1311 break;
1312 }
1313
1314 /* If no action flags are set, set all the "normal" rewrites. */
1315
1316 if ((next->flags & (rewrite_all | rewrite_smtp)) == 0)
1317 next->flags |= isglobal? rewrite_all : rewrite_all_headers;
1318
1319 /* Remember which exist, for optimization, and return the rule */
1320
1321 *existflags |= next->flags;
1322 return next;
1323 }
1324
1325
1326
1327
1328 /*************************************************
1329 * Read global rewrite information *
1330 *************************************************/
1331
1332 /* Each line is a single rewrite rule; it is parsed into a control block
1333 by readconf_one_rewrite(), and its flags are ORed into the global flag
1334 word rewrite_existflags. */
1335
1336 void
1337 readconf_rewrites(void)
1338 {
1339 rewrite_rule **chain = &global_rewrite_rules;
1340 uschar *p;
1341
1342 while ((p = get_config_line()) != NULL)
1343 {
1344 rewrite_rule *next = readconf_one_rewrite(p, &rewrite_existflags, TRUE);
1345 *chain = next;
1346 chain = &(next->next);
1347 }
1348 }
1349
1350
1351
1352 /*************************************************
1353 * Read a string *
1354 *************************************************/
1355
1356 /* Strings are read into the normal store pool. As long we aren't too
1357 near the end of the current block, the string will just use what is necessary
1358 on the top of the stacking pool, because string_cat() uses the extension
1359 mechanism.
1360
1361 Argument:
1362 s the rest of the input line
1363 name the option name (for errors)
1364
1365 Returns: pointer to the string
1366 */
1367
1368 static uschar *
1369 read_string(const uschar *s, const uschar *name)
1370 {
1371 uschar *yield;
1372 const uschar *ss;
1373
1374 if (*s != '\"') return string_copy(s);
1375
1376 ss = s;
1377 yield = string_dequote(&s);
1378
1379 if (s == ss+1 || s[-1] != '\"')
1380 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1381 "missing quote at end of string value for %s", name);
1382
1383 if (*s != 0) extra_chars_error(s, US"string value for ", name, US"");
1384
1385 return yield;
1386 }
1387
1388
1389 /*************************************************
1390 * Custom-handler options *
1391 *************************************************/
1392 static void
1393 fn_smtp_receive_timeout(const uschar * name, const uschar * str)
1394 {
1395 if (*str == '$')
1396 smtp_receive_timeout_s = string_copy(str);
1397 else
1398 {
1399 /* "smtp_receive_timeout", opt_time, &smtp_receive_timeout */
1400 smtp_receive_timeout = readconf_readtime(str, 0, FALSE);
1401 if (smtp_receive_timeout < 0)
1402 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "invalid time value for %s",
1403 name);
1404 }
1405 }
1406
1407 /*************************************************
1408 * Handle option line *
1409 *************************************************/
1410
1411 /* This function is called from several places to process a line containing the
1412 setting of an option. The first argument is the line to be decoded; it has been
1413 checked not to be empty and not to start with '#'. Trailing newlines and white
1414 space have been removed. The second argument is a pointer to the list of
1415 variable names that are to be recognized, together with their types and
1416 locations, and the third argument gives the number of entries in the list.
1417
1418 The fourth argument is a pointer to a data block. If it is NULL, then the data
1419 values in the options list are absolute addresses. Otherwise, they are byte
1420 offsets in the data block.
1421
1422 String option data may continue onto several lines; this function reads further
1423 data from config_file if necessary.
1424
1425 The yield of this function is normally zero. If a string continues onto
1426 multiple lines, then the data value is permitted to be followed by a comma
1427 or a semicolon (for use in drivers) and the yield is that character.
1428
1429 Arguments:
1430 buffer contains the configuration line to be handled
1431 oltop points to the start of the relevant option list
1432 last one more than the offset of the last item in the option list
1433 data_block NULL when reading main options => data values in the option
1434 list are absolute addresses; otherwise they are byte offsets
1435 in data_block when they have opt_public set; otherwise
1436 they are byte offsets in data_block->options_block.
1437 unknown_txt format string to use in panic message for unknown option;
1438 must contain %s for option name
1439 if given as NULL, don't panic on unknown option
1440
1441 Returns: TRUE if an option was read successfully,
1442 FALSE false for an unknown option if unknown_txt == NULL,
1443 otherwise panic and die on an unknown option
1444 */
1445
1446 static BOOL
1447 readconf_handle_option(uschar *buffer, optionlist *oltop, int last,
1448 void *data_block, uschar *unknown_txt)
1449 {
1450 int ptr = 0;
1451 int offset = 0;
1452 int n, count, type, value;
1453 int issecure = 0;
1454 uid_t uid;
1455 gid_t gid;
1456 BOOL boolvalue = TRUE;
1457 BOOL freesptr = TRUE;
1458 optionlist *ol, *ol2;
1459 struct passwd *pw;
1460 void *reset_point;
1461 int intbase = 0;
1462 uschar *inttype = US"";
1463 uschar *sptr;
1464 uschar *s = buffer;
1465 uschar *saved_condition, *strtemp;
1466 uschar **str_target;
1467 uschar name[64];
1468 uschar name2[64];
1469
1470 /* There may be leading spaces; thereafter, we expect an option name starting
1471 with a letter. */
1472
1473 while (isspace(*s)) s++;
1474 if (!isalpha(*s))
1475 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "option setting expected: %s", s);
1476
1477 /* Read the name of the option, and skip any subsequent white space. If
1478 it turns out that what we read was "hide", set the flag indicating that
1479 this is a secure option, and loop to read the next word. */
1480
1481 for (n = 0; n < 2; n++)
1482 {
1483 while (isalnum(*s) || *s == '_')
1484 {
1485 if (ptr < sizeof(name)-1) name[ptr++] = *s;
1486 s++;
1487 }
1488 name[ptr] = 0;
1489 while (isspace(*s)) s++;
1490 if (Ustrcmp(name, "hide") != 0) break;
1491 issecure = opt_secure;
1492 ptr = 0;
1493 }
1494
1495 /* Deal with "no_" or "not_" here for booleans */
1496
1497 if (Ustrncmp(name, "no_", 3) == 0)
1498 {
1499 boolvalue = FALSE;
1500 offset = 3;
1501 }
1502
1503 if (Ustrncmp(name, "not_", 4) == 0)
1504 {
1505 boolvalue = FALSE;
1506 offset = 4;
1507 }
1508
1509 /* Search the list for the given name. A non-existent name, or an option that
1510 is set twice, is a disaster. */
1511
1512 ol = find_option(name + offset, oltop, last);
1513
1514 if (ol == NULL)
1515 {
1516 if (unknown_txt == NULL) return FALSE;
1517 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, CS unknown_txt, name);
1518 }
1519
1520 if ((ol->type & opt_set) && !(ol->type & (opt_rep_con | opt_rep_str)))
1521 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1522 "\"%s\" option set for the second time", name);
1523
1524 ol->type |= opt_set | issecure;
1525 type = ol->type & opt_mask;
1526
1527 /* Types with data values must be followed by '='; the "no[t]_" prefix
1528 applies only to boolean values. */
1529
1530 if (type < opt_bool || type > opt_bool_last)
1531 {
1532 if (offset != 0)
1533 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1534 "negation prefix applied to a non-boolean option");
1535 if (*s == 0)
1536 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1537 "unexpected end of line (data missing) after %s", name);
1538 if (*s != '=')
1539 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "missing \"=\" after %s", name);
1540 }
1541
1542 /* If a boolean wasn't preceded by "no[t]_" it can be followed by = and
1543 true/false/yes/no, or, in the case of opt_expand_bool, a general string that
1544 ultimately expands to one of those values. */
1545
1546 else if (*s != 0 && (offset != 0 || *s != '='))
1547 extra_chars_error(s, US"boolean option ", name, US"");
1548
1549 /* Skip white space after = */
1550
1551 if (*s == '=') while (isspace((*(++s))));
1552
1553 /* If there is a data block and the opt_public flag is not set, change
1554 the data block pointer to the private options block. */
1555
1556 if (data_block != NULL && (ol->type & opt_public) == 0)
1557 data_block = (void *)(((driver_instance *)data_block)->options_block);
1558
1559 /* Now get the data according to the type. */
1560
1561 switch (type)
1562 {
1563 /* If a string value is not enclosed in quotes, it consists of
1564 the rest of the current line, verbatim. Otherwise, string escapes
1565 are processed.
1566
1567 A transport is specified as a string, which is then looked up in the
1568 list of transports. A search type is specified as one of a number of
1569 known strings.
1570
1571 A set or rewrite rules for a driver is specified as a string, which is
1572 then parsed into a suitable chain of control blocks.
1573
1574 Uids and gids are specified as strings which are then looked up in the
1575 passwd file. Lists of uids and gids are similarly specified as colon-
1576 separated strings. */
1577
1578 case opt_stringptr:
1579 case opt_uid:
1580 case opt_gid:
1581 case opt_expand_uid:
1582 case opt_expand_gid:
1583 case opt_uidlist:
1584 case opt_gidlist:
1585 case opt_rewrite:
1586
1587 reset_point = sptr = read_string(s, name);
1588
1589 /* Having read a string, we now have several different ways of using it,
1590 depending on the data type, so do another switch. If keeping the actual
1591 string is not required (because it is interpreted), freesptr is set TRUE,
1592 and at the end we reset the pool. */
1593
1594 switch (type)
1595 {
1596 /* If this was a string, set the variable to point to the new string,
1597 and set the flag so its store isn't reclaimed. If it was a list of rewrite
1598 rules, we still keep the string (for printing), and parse the rules into a
1599 control block and flags word. */
1600
1601 case opt_stringptr:
1602 if (data_block == NULL)
1603 str_target = (uschar **)(ol->value);
1604 else
1605 str_target = (uschar **)((uschar *)data_block + (long int)(ol->value));
1606 if (ol->type & opt_rep_con)
1607 {
1608 /* We already have a condition, we're conducting a crude hack to let
1609 multiple condition rules be chained together, despite storing them in
1610 text form. */
1611 saved_condition = *str_target;
1612 strtemp = string_sprintf("${if and{{bool_lax{%s}}{bool_lax{%s}}}}",
1613 saved_condition, sptr);
1614 *str_target = string_copy_malloc(strtemp);
1615 /* TODO(pdp): there is a memory leak here and just below
1616 when we set 3 or more conditions; I still don't
1617 understand the store mechanism enough to know
1618 what's the safe way to free content from an earlier store.
1619 AFAICT, stores stack, so freeing an early stored item also stores
1620 all data alloc'd after it. If we knew conditions were adjacent,
1621 we could survive that, but we don't. So I *think* we need to take
1622 another bit from opt_type to indicate "malloced"; this seems like
1623 quite a hack, especially for this one case. It also means that
1624 we can't ever reclaim the store from the *first* condition.
1625
1626 Because we only do this once, near process start-up, I'm prepared to
1627 let this slide for the time being, even though it rankles. */
1628 }
1629 else if (ol->type & opt_rep_str)
1630 {
1631 uschar sep_o = Ustrncmp(name, "headers_add", 11)==0 ? '\n' : ':';
1632 int sep_i = -(int)sep_o;
1633 const uschar * list = sptr;
1634 uschar * s;
1635 uschar * list_o = *str_target;
1636
1637 while ((s = string_nextinlist(&list, &sep_i, NULL, 0)))
1638 list_o = string_append_listele(list_o, sep_o, s);
1639 if (list_o)
1640 *str_target = string_copy_malloc(list_o);
1641 }
1642 else
1643 {
1644 *str_target = sptr;
1645 freesptr = FALSE;
1646 }
1647 break;
1648
1649 case opt_rewrite:
1650 if (data_block == NULL)
1651 *((uschar **)(ol->value)) = sptr;
1652 else
1653 *((uschar **)((uschar *)data_block + (long int)(ol->value))) = sptr;
1654 freesptr = FALSE;
1655 if (type == opt_rewrite)
1656 {
1657 int sep = 0;
1658 int *flagptr;
1659 uschar *p = sptr;
1660 rewrite_rule **chain;
1661 optionlist *ol3;
1662
1663 sprintf(CS name2, "*%.50s_rules", name);
1664 ol2 = find_option(name2, oltop, last);
1665 sprintf(CS name2, "*%.50s_flags", name);
1666 ol3 = find_option(name2, oltop, last);
1667
1668 if (ol2 == NULL || ol3 == NULL)
1669 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1670 "rewrite rules not available for driver");
1671
1672 if (data_block == NULL)
1673 {
1674 chain = (rewrite_rule **)(ol2->value);
1675 flagptr = (int *)(ol3->value);
1676 }
1677 else
1678 {
1679 chain = (rewrite_rule **)((uschar *)data_block + (long int)(ol2->value));
1680 flagptr = (int *)((uschar *)data_block + (long int)(ol3->value));
1681 }
1682
1683 while ((p = string_nextinlist(CUSS &sptr, &sep, big_buffer, BIG_BUFFER_SIZE)))
1684 {
1685 rewrite_rule *next = readconf_one_rewrite(p, flagptr, FALSE);
1686 *chain = next;
1687 chain = &(next->next);
1688 }
1689
1690 if ((*flagptr & (rewrite_all_envelope | rewrite_smtp)) != 0)
1691 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "rewrite rule specifies a "
1692 "non-header rewrite - not allowed at transport time -");
1693 }
1694 break;
1695
1696 /* If it was an expanded uid, see if there is any expansion to be
1697 done by checking for the presence of a $ character. If there is, save it
1698 in the corresponding *expand_user option field. Otherwise, fall through
1699 to treat it as a fixed uid. Ensure mutual exclusivity of the two kinds
1700 of data. */
1701
1702 case opt_expand_uid:
1703 sprintf(CS name2, "*expand_%.50s", name);
1704 ol2 = find_option(name2, oltop, last);
1705 if (ol2 != NULL)
1706 {
1707 uschar *ss = (Ustrchr(sptr, '$') != NULL)? sptr : NULL;
1708
1709 if (data_block == NULL)
1710 *((uschar **)(ol2->value)) = ss;
1711 else
1712 *((uschar **)((uschar *)data_block + (long int)(ol2->value))) = ss;
1713
1714 if (ss != NULL)
1715 {
1716 *(get_set_flag(name, oltop, last, data_block)) = FALSE;
1717 freesptr = FALSE;
1718 break;
1719 }
1720 }
1721
1722 /* Look up a fixed uid, and also make use of the corresponding gid
1723 if a passwd entry is returned and the gid has not been set. */
1724
1725 case opt_uid:
1726 if (!route_finduser(sptr, &pw, &uid))
1727 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "user %s was not found", sptr);
1728 if (data_block == NULL)
1729 *((uid_t *)(ol->value)) = uid;
1730 else
1731 *((uid_t *)((uschar *)data_block + (long int)(ol->value))) = uid;
1732
1733 /* Set the flag indicating a fixed value is set */
1734
1735 *(get_set_flag(name, oltop, last, data_block)) = TRUE;
1736
1737 /* Handle matching gid if we have a passwd entry: done by finding the
1738 same name with terminating "user" changed to "group"; if not found,
1739 ignore. Also ignore if the value is already set. */
1740
1741 if (pw == NULL) break;
1742 Ustrcpy(name+Ustrlen(name)-4, "group");
1743 ol2 = find_option(name, oltop, last);
1744 if (ol2 != NULL && ((ol2->type & opt_mask) == opt_gid ||
1745 (ol2->type & opt_mask) == opt_expand_gid))
1746 {
1747 BOOL *set_flag = get_set_flag(name, oltop, last, data_block);
1748 if (! *set_flag)
1749 {
1750 if (data_block == NULL)
1751 *((gid_t *)(ol2->value)) = pw->pw_gid;
1752 else
1753 *((gid_t *)((uschar *)data_block + (long int)(ol2->value))) = pw->pw_gid;
1754 *set_flag = TRUE;
1755 }
1756 }
1757 break;
1758
1759 /* If it was an expanded gid, see if there is any expansion to be
1760 done by checking for the presence of a $ character. If there is, save it
1761 in the corresponding *expand_user option field. Otherwise, fall through
1762 to treat it as a fixed gid. Ensure mutual exclusivity of the two kinds
1763 of data. */
1764
1765 case opt_expand_gid:
1766 sprintf(CS name2, "*expand_%.50s", name);
1767 ol2 = find_option(name2, oltop, last);
1768 if (ol2 != NULL)
1769 {
1770 uschar *ss = (Ustrchr(sptr, '$') != NULL)? sptr : NULL;
1771
1772 if (data_block == NULL)
1773 *((uschar **)(ol2->value)) = ss;
1774 else
1775 *((uschar **)((uschar *)data_block + (long int)(ol2->value))) = ss;
1776
1777 if (ss != NULL)
1778 {
1779 *(get_set_flag(name, oltop, last, data_block)) = FALSE;
1780 freesptr = FALSE;
1781 break;
1782 }
1783 }
1784
1785 /* Handle freestanding gid */
1786
1787 case opt_gid:
1788 if (!route_findgroup(sptr, &gid))
1789 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "group %s was not found", sptr);
1790 if (data_block == NULL)
1791 *((gid_t *)(ol->value)) = gid;
1792 else
1793 *((gid_t *)((uschar *)data_block + (long int)(ol->value))) = gid;
1794 *(get_set_flag(name, oltop, last, data_block)) = TRUE;
1795 break;
1796
1797 /* If it was a uid list, look up each individual entry, and build
1798 a vector of uids, with a count in the first element. Put the vector
1799 in malloc store so we can free the string. (We are reading into
1800 permanent store already.) */
1801
1802 case opt_uidlist:
1803 {
1804 int count = 1;
1805 uid_t *list;
1806 int ptr = 0;
1807 const uschar *p;
1808 const uschar *op = expand_string (sptr);
1809
1810 if (op == NULL)
1811 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "failed to expand %s: %s",
1812 name, expand_string_message);
1813
1814 p = op;
1815 if (*p != 0) count++;
1816 while (*p != 0) if (*p++ == ':' && *p != 0) count++;
1817 list = store_malloc(count*sizeof(uid_t));
1818 list[ptr++] = (uid_t)(count - 1);
1819
1820 if (data_block == NULL)
1821 *((uid_t **)(ol->value)) = list;
1822 else
1823 *((uid_t **)((uschar *)data_block + (long int)(ol->value))) = list;
1824
1825 p = op;
1826 while (count-- > 1)
1827 {
1828 int sep = 0;
1829 (void)string_nextinlist(&p, &sep, big_buffer, BIG_BUFFER_SIZE);
1830 if (!route_finduser(big_buffer, NULL, &uid))
1831 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "user %s was not found",
1832 big_buffer);
1833 list[ptr++] = uid;
1834 }
1835 }
1836 break;
1837
1838 /* If it was a gid list, look up each individual entry, and build
1839 a vector of gids, with a count in the first element. Put the vector
1840 in malloc store so we can free the string. (We are reading into permanent
1841 store already.) */
1842
1843 case opt_gidlist:
1844 {
1845 int count = 1;
1846 gid_t *list;
1847 int ptr = 0;
1848 const uschar *p;
1849 const uschar *op = expand_string (sptr);
1850
1851 if (op == NULL)
1852 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "failed to expand %s: %s",
1853 name, expand_string_message);
1854
1855 p = op;
1856 if (*p != 0) count++;
1857 while (*p != 0) if (*p++ == ':' && *p != 0) count++;
1858 list = store_malloc(count*sizeof(gid_t));
1859 list[ptr++] = (gid_t)(count - 1);
1860
1861 if (data_block == NULL)
1862 *((gid_t **)(ol->value)) = list;
1863 else
1864 *((gid_t **)((uschar *)data_block + (long int)(ol->value))) = list;
1865
1866 p = op;
1867 while (count-- > 1)
1868 {
1869 int sep = 0;
1870 (void)string_nextinlist(&p, &sep, big_buffer, BIG_BUFFER_SIZE);
1871 if (!route_findgroup(big_buffer, &gid))
1872 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "group %s was not found",
1873 big_buffer);
1874 list[ptr++] = gid;
1875 }
1876 }
1877 break;
1878 }
1879
1880 /* Release store if the value of the string doesn't need to be kept. */
1881
1882 if (freesptr) store_reset(reset_point);
1883 break;
1884
1885 /* Expanded boolean: if no characters follow, or if there are no dollar
1886 characters, this is a fixed-valued boolean, and we fall through. Otherwise,
1887 save the string for later expansion in the alternate place. */
1888
1889 case opt_expand_bool:
1890 if (*s != 0 && Ustrchr(s, '$') != 0)
1891 {
1892 sprintf(CS name2, "*expand_%.50s", name);
1893 ol2 = find_option(name2, oltop, last);
1894 if (ol2 != NULL)
1895 {
1896 reset_point = sptr = read_string(s, name);
1897 if (data_block == NULL)
1898 *((uschar **)(ol2->value)) = sptr;
1899 else
1900 *((uschar **)((uschar *)data_block + (long int)(ol2->value))) = sptr;
1901 freesptr = FALSE;
1902 break;
1903 }
1904 }
1905 /* Fall through */
1906
1907 /* Boolean: if no characters follow, the value is boolvalue. Otherwise
1908 look for yes/not/true/false. Some booleans are stored in a single bit in
1909 a single int. There's a special fudge for verify settings; without a suffix
1910 they set both xx_sender and xx_recipient. The table points to the sender
1911 value; search subsequently for the recipient. There's another special case:
1912 opt_bool_set also notes when a boolean has been set. */
1913
1914 case opt_bool:
1915 case opt_bit:
1916 case opt_bool_verify:
1917 case opt_bool_set:
1918 if (*s != 0)
1919 {
1920 s = readconf_readname(name2, 64, s);
1921 if (strcmpic(name2, US"true") == 0 || strcmpic(name2, US"yes") == 0)
1922 boolvalue = TRUE;
1923 else if (strcmpic(name2, US"false") == 0 || strcmpic(name2, US"no") == 0)
1924 boolvalue = FALSE;
1925 else log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1926 "\"%s\" is not a valid value for the \"%s\" option", name2, name);
1927 if (*s != 0) extra_chars_error(s, string_sprintf("\"%s\" ", name2),
1928 US"for boolean option ", name);
1929 }
1930
1931 /* Handle single-bit type. */
1932
1933 if (type == opt_bit)
1934 {
1935 int bit = 1 << ((ol->type >> 16) & 31);
1936 int *ptr = (data_block == NULL)?
1937 (int *)(ol->value) :
1938 (int *)((uschar *)data_block + (long int)ol->value);
1939 if (boolvalue) *ptr |= bit; else *ptr &= ~bit;
1940 break;
1941 }
1942
1943 /* Handle full BOOL types */
1944
1945 if (data_block == NULL)
1946 *((BOOL *)(ol->value)) = boolvalue;
1947 else
1948 *((BOOL *)((uschar *)data_block + (long int)(ol->value))) = boolvalue;
1949
1950 /* Verify fudge */
1951
1952 if (type == opt_bool_verify)
1953 {
1954 sprintf(CS name2, "%.50s_recipient", name + offset);
1955 ol2 = find_option(name2, oltop, last);
1956 if (ol2 != NULL)
1957 {
1958 if (data_block == NULL)
1959 *((BOOL *)(ol2->value)) = boolvalue;
1960 else
1961 *((BOOL *)((uschar *)data_block + (long int)(ol2->value))) = boolvalue;
1962 }
1963 }
1964
1965 /* Note that opt_bool_set type is set, if there is somewhere to do so */
1966
1967 else if (type == opt_bool_set)
1968 {
1969 sprintf(CS name2, "*set_%.50s", name + offset);
1970 ol2 = find_option(name2, oltop, last);
1971 if (ol2 != NULL)
1972 {
1973 if (data_block == NULL)
1974 *((BOOL *)(ol2->value)) = TRUE;
1975 else
1976 *((BOOL *)((uschar *)data_block + (long int)(ol2->value))) = TRUE;
1977 }
1978 }
1979 break;
1980
1981 /* Octal integer */
1982
1983 case opt_octint:
1984 intbase = 8;
1985 inttype = US"octal ";
1986
1987 /* Integer: a simple(ish) case; allow octal and hex formats, and
1988 suffixes K and M. The different types affect output, not input. */
1989
1990 case opt_mkint:
1991 case opt_int:
1992 {
1993 uschar *endptr;
1994 long int lvalue;
1995
1996 errno = 0;
1997 lvalue = strtol(CS s, CSS &endptr, intbase);
1998
1999 if (endptr == s)
2000 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "%sinteger expected for %s",
2001 inttype, name);
2002
2003 if (errno != ERANGE)
2004 {
2005 if (tolower(*endptr) == 'k')
2006 {
2007 if (lvalue > INT_MAX/1024 || lvalue < INT_MIN/1024) errno = ERANGE;
2008 else lvalue *= 1024;
2009 endptr++;
2010 }
2011 else if (tolower(*endptr) == 'm')
2012 {
2013 if (lvalue > INT_MAX/(1024*1024) || lvalue < INT_MIN/(1024*1024))
2014 errno = ERANGE;
2015 else lvalue *= 1024*1024;
2016 endptr++;
2017 }
2018 }
2019
2020 if (errno == ERANGE || lvalue > INT_MAX || lvalue < INT_MIN)
2021 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
2022 "absolute value of integer \"%s\" is too large (overflow)", s);
2023
2024 while (isspace(*endptr)) endptr++;
2025 if (*endptr != 0)
2026 extra_chars_error(endptr, inttype, US"integer value for ", name);
2027
2028 value = (int)lvalue;
2029 }
2030
2031 if (data_block == NULL)
2032 *((int *)(ol->value)) = value;
2033 else
2034 *((int *)((uschar *)data_block + (long int)(ol->value))) = value;
2035 break;
2036
2037 /* Integer held in K: again, allow octal and hex formats, and suffixes K and
2038 M. */
2039 /*XXX consider moving to int_eximarith_t (but mind the overflow test 0415) */
2040
2041 case opt_Kint:
2042 {
2043 uschar *endptr;
2044 errno = 0;
2045 value = strtol(CS s, CSS &endptr, intbase);
2046
2047 if (endptr == s)
2048 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "%sinteger expected for %s",
2049 inttype, name);
2050
2051 if (errno != ERANGE)
2052 {
2053 if (tolower(*endptr) == 'm')
2054 {
2055 if (value > INT_MAX/1024 || value < INT_MIN/1024) errno = ERANGE;
2056 else value *= 1024;
2057 endptr++;
2058 }
2059 else if (tolower(*endptr) == 'k')
2060 {
2061 endptr++;
2062 }
2063 else
2064 {
2065 value = (value + 512)/1024;
2066 }
2067 }
2068
2069 if (errno == ERANGE) log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
2070 "absolute value of integer \"%s\" is too large (overflow)", s);
2071
2072 while (isspace(*endptr)) endptr++;
2073 if (*endptr != 0)
2074 extra_chars_error(endptr, inttype, US"integer value for ", name);
2075 }
2076
2077 if (data_block == NULL)
2078 *((int *)(ol->value)) = value;
2079 else
2080 *((int *)((uschar *)data_block + (long int)(ol->value))) = value;
2081 break;
2082
2083 /* Fixed-point number: held to 3 decimal places. */
2084
2085 case opt_fixed:
2086 if (sscanf(CS s, "%d%n", &value, &count) != 1)
2087 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
2088 "fixed-point number expected for %s", name);
2089
2090 if (value < 0) log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
2091 "integer \"%s\" is too large (overflow)", s);
2092
2093 value *= 1000;
2094
2095 if (value < 0) log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
2096 "integer \"%s\" is too large (overflow)", s);
2097
2098 if (s[count] == '.')
2099 {
2100 int d = 100;
2101 while (isdigit(s[++count]))
2102 {
2103 value += (s[count] - '0') * d;
2104 d /= 10;
2105 }
2106 }
2107
2108 while (isspace(s[count])) count++;
2109
2110 if (s[count] != 0)
2111 extra_chars_error(s+count, US"fixed-point value for ", name, US"");
2112
2113 if (data_block == NULL)
2114 *((int *)(ol->value)) = value;
2115 else
2116 *((int *)((uschar *)data_block + (long int)(ol->value))) = value;
2117 break;
2118
2119 /* There's a special routine to read time values. */
2120
2121 case opt_time:
2122 value = readconf_readtime(s, 0, FALSE);
2123 if (value < 0)
2124 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "invalid time value for %s",
2125 name);
2126 if (data_block == NULL)
2127 *((int *)(ol->value)) = value;
2128 else
2129 *((int *)((uschar *)data_block + (long int)(ol->value))) = value;
2130 break;
2131
2132 /* A time list is a list of colon-separated times, with the first
2133 element holding the size of the list and the second the number of
2134 entries used. */
2135
2136 case opt_timelist:
2137 {
2138 int count = 0;
2139 int *list = (data_block == NULL)?
2140 (int *)(ol->value) :
2141 (int *)((uschar *)data_block + (long int)(ol->value));
2142
2143 if (*s != 0) for (count = 1; count <= list[0] - 2; count++)
2144 {
2145 int terminator = 0;
2146 uschar *snext = Ustrchr(s, ':');
2147 if (snext != NULL)
2148 {
2149 uschar *ss = snext;
2150 while (ss > s && isspace(ss[-1])) ss--;
2151 terminator = *ss;
2152 }
2153 value = readconf_readtime(s, terminator, FALSE);
2154 if (value < 0)
2155 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "invalid time value for %s",
2156 name);
2157 if (count > 1 && value <= list[count])
2158 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
2159 "time value out of order for %s", name);
2160 list[count+1] = value;
2161 if (snext == NULL) break;
2162 s = snext + 1;
2163 while (isspace(*s)) s++;
2164 }
2165
2166 if (count > list[0] - 2)
2167 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "too many time values for %s",
2168 name);
2169 if (count > 0 && list[2] == 0) count = 0;
2170 list[1] = count;
2171 break;
2172 }
2173
2174 case opt_func:
2175 {
2176 void (*fn)() = ol->value;
2177 fn(name, s);
2178 break;
2179 }
2180 }
2181
2182 return TRUE;
2183 }
2184
2185
2186
2187 /*************************************************
2188 * Print a time value *
2189 *************************************************/
2190
2191 /*
2192 Argument: a time value in seconds
2193 Returns: pointer to a fixed buffer containing the time as a string,
2194 in readconf_readtime() format
2195 */
2196
2197 uschar *
2198 readconf_printtime(int t)
2199 {
2200 int s, m, h, d, w;
2201 uschar *p = time_buffer;
2202
2203 if (t < 0)
2204 {
2205 *p++ = '-';
2206 t = -t;
2207 }
2208
2209 s = t % 60;
2210 t /= 60;
2211 m = t % 60;
2212 t /= 60;
2213 h = t % 24;
2214 t /= 24;
2215 d = t % 7;
2216 w = t/7;
2217
2218 if (w > 0) { sprintf(CS p, "%dw", w); while (*p) p++; }
2219 if (d > 0) { sprintf(CS p, "%dd", d); while (*p) p++; }
2220 if (h > 0) { sprintf(CS p, "%dh", h); while (*p) p++; }
2221 if (m > 0) { sprintf(CS p, "%dm", m); while (*p) p++; }
2222 if (s > 0 || p == time_buffer) sprintf(CS p, "%ds", s);
2223
2224 return time_buffer;
2225 }
2226
2227
2228
2229 /*************************************************
2230 * Print an individual option value *
2231 *************************************************/
2232
2233 /* This is used by the -bP option, so prints to the standard output.
2234 The entire options list is passed in as an argument, because some options come
2235 in pairs - typically uid/gid settings, which can either be explicit numerical
2236 values, or strings to be expanded later. If the numerical value is unset,
2237 search for "*expand_<name>" to see if there is a string equivalent.
2238
2239 Arguments:
2240 ol option entry, or NULL for an unknown option
2241 name option name
2242 options_block NULL for main configuration options; otherwise points to
2243 a driver block; if the option doesn't have opt_public
2244 set, then options_block->options_block is where the item
2245 resides.
2246 oltop points to the option list in which ol exists
2247 last one more than the offset of the last entry in optop
2248 no_labels do not show "foo = " at the start.
2249
2250 Returns: nothing
2251 */
2252
2253 static void
2254 print_ol(optionlist *ol, uschar *name, void *options_block,
2255 optionlist *oltop, int last, BOOL no_labels)
2256 {
2257 struct passwd *pw;
2258 struct group *gr;
2259 optionlist *ol2;
2260 void *value;
2261 uid_t *uidlist;
2262 gid_t *gidlist;
2263 uschar *s;
2264 uschar name2[64];
2265
2266 if (ol == NULL)
2267 {
2268 printf("%s is not a known option\n", name);
2269 return;
2270 }
2271
2272 /* Non-admin callers cannot see options that have been flagged secure by the
2273 "hide" prefix. */
2274
2275 if (!admin_user && (ol->type & opt_secure) != 0)
2276 {
2277 if (no_labels)
2278 printf("%s\n", hidden);
2279 else
2280 printf("%s = %s\n", name, hidden);
2281 return;
2282 }
2283
2284 /* Else show the value of the option */
2285
2286 value = ol->value;
2287 if (options_block != NULL)
2288 {
2289 if ((ol->type & opt_public) == 0)
2290 options_block = (void *)(((driver_instance *)options_block)->options_block);
2291 value = (void *)((uschar *)options_block + (long int)value);
2292 }
2293
2294 switch(ol->type & opt_mask)
2295 {
2296 case opt_stringptr:
2297 case opt_rewrite: /* Show the text value */
2298 s = *((uschar **)value);
2299 if (!no_labels) printf("%s = ", name);
2300 printf("%s\n", (s == NULL)? US"" : string_printing2(s, FALSE));
2301 break;
2302
2303 case opt_int:
2304 if (!no_labels) printf("%s = ", name);
2305 printf("%d\n", *((int *)value));
2306 break;
2307
2308 case opt_mkint:
2309 {
2310 int x = *((int *)value);
2311 if (x != 0 && (x & 1023) == 0)
2312 {
2313 int c = 'K';
2314 x >>= 10;
2315 if ((x & 1023) == 0)
2316 {
2317 c = 'M';
2318 x >>= 10;
2319 }
2320 if (!no_labels) printf("%s = ", name);
2321 printf("%d%c\n", x, c);
2322 }
2323 else
2324 {
2325 if (!no_labels) printf("%s = ", name);
2326 printf("%d\n", x);
2327 }
2328 }
2329 break;
2330
2331 case opt_Kint:
2332 {
2333 int x = *((int *)value);
2334 if (!no_labels) printf("%s = ", name);
2335 if (x == 0) printf("0\n");
2336 else if ((x & 1023) == 0) printf("%dM\n", x >> 10);
2337 else printf("%dK\n", x);
2338 }
2339 break;
2340
2341 case opt_octint:
2342 if (!no_labels) printf("%s = ", name);
2343 printf("%#o\n", *((int *)value));
2344 break;
2345
2346 /* Can be negative only when "unset", in which case integer */
2347
2348 case opt_fixed:
2349 {
2350 int x = *((int *)value);
2351 int f = x % 1000;
2352 int d = 100;
2353 if (x < 0) printf("%s =\n", name); else
2354 {
2355 if (!no_labels) printf("%s = ", name);
2356 printf("%d.", x/1000);
2357 do
2358 {
2359 printf("%d", f/d);
2360 f %= d;
2361 d /= 10;
2362 }
2363 while (f != 0);
2364 printf("\n");
2365 }
2366 }
2367 break;
2368
2369 /* If the numerical value is unset, try for the string value */
2370
2371 case opt_expand_uid:
2372 if (! *get_set_flag(name, oltop, last, options_block))
2373 {
2374 sprintf(CS name2, "*expand_%.50s", name);
2375 ol2 = find_option(name2, oltop, last);
2376 if (ol2 != NULL)
2377 {
2378 void *value2 = ol2->value;
2379 if (options_block != NULL)
2380 value2 = (void *)((uschar *)options_block + (long int)value2);
2381 s = *((uschar **)value2);
2382 if (!no_labels) printf("%s = ", name);
2383 printf("%s\n", (s == NULL)? US"" : string_printing(s));
2384 break;
2385 }
2386 }
2387
2388 /* Else fall through */
2389
2390 case opt_uid:
2391 if (!no_labels) printf("%s = ", name);
2392 if (! *get_set_flag(name, oltop, last, options_block))
2393 printf("\n");
2394 else
2395 {
2396 pw = getpwuid(*((uid_t *)value));
2397 if (pw == NULL)
2398 printf("%ld\n", (long int)(*((uid_t *)value)));
2399 else printf("%s\n", pw->pw_name);
2400 }
2401 break;
2402
2403 /* If the numerical value is unset, try for the string value */
2404
2405 case opt_expand_gid:
2406 if (! *get_set_flag(name, oltop, last, options_block))
2407 {
2408 sprintf(CS name2, "*expand_%.50s", name);
2409 ol2 = find_option(name2, oltop, last);
2410 if (ol2 != NULL && (ol2->type & opt_mask) == opt_stringptr)
2411 {
2412 void *value2 = ol2->value;
2413 if (options_block != NULL)
2414 value2 = (void *)((uschar *)options_block + (long int)value2);
2415 s = *((uschar **)value2);
2416 if (!no_labels) printf("%s = ", name);
2417 printf("%s\n", (s == NULL)? US"" : string_printing(s));
2418 break;
2419 }
2420 }
2421
2422 /* Else fall through */
2423
2424 case opt_gid:
2425 if (!no_labels) printf("%s = ", name);
2426 if (! *get_set_flag(name, oltop, last, options_block))
2427 printf("\n");
2428 else
2429 {
2430 gr = getgrgid(*((int *)value));
2431 if (gr == NULL)
2432 printf("%ld\n", (long int)(*((int *)value)));
2433 else printf("%s\n", gr->gr_name);
2434 }
2435 break;
2436
2437 case opt_uidlist:
2438 uidlist = *((uid_t **)value);
2439 if (!no_labels) printf("%s =", name);
2440 if (uidlist != NULL)
2441 {
2442 int i;
2443 uschar sep = ' ';
2444 if (no_labels) sep = '\0';
2445 for (i = 1; i <= (int)(uidlist[0]); i++)
2446 {
2447 uschar *name = NULL;
2448 pw = getpwuid(uidlist[i]);
2449 if (pw != NULL) name = US pw->pw_name;
2450 if (sep != '\0') printf("%c", sep);
2451 if (name != NULL) printf("%s", name);
2452 else printf("%ld", (long int)(uidlist[i]));
2453 sep = ':';
2454 }
2455 }
2456 printf("\n");
2457 break;
2458
2459 case opt_gidlist:
2460 gidlist = *((gid_t **)value);
2461 if (!no_labels) printf("%s =", name);
2462 if (gidlist != NULL)
2463 {
2464 int i;
2465 uschar sep = ' ';
2466 if (no_labels) sep = '\0';
2467 for (i = 1; i <= (int)(gidlist[0]); i++)
2468 {
2469 uschar *name = NULL;
2470 gr = getgrgid(gidlist[i]);
2471 if (gr != NULL) name = US gr->gr_name;
2472 if (sep != '\0') printf("%c", sep);
2473 if (name != NULL) printf("%s", name);
2474 else printf("%ld", (long int)(gidlist[i]));
2475 sep = ':';
2476 }
2477 }
2478 printf("\n");
2479 break;
2480
2481 case opt_time:
2482 if (!no_labels) printf("%s = ", name);
2483 printf("%s\n", readconf_printtime(*((int *)value)));
2484 break;
2485
2486 case opt_timelist:
2487 {
2488 int i;
2489 int *list = (int *)value;
2490 if (!no_labels) printf("%s = ", name);
2491 for (i = 0; i < list[1]; i++)
2492 printf("%s%s", (i == 0)? "" : ":", readconf_printtime(list[i+2]));
2493 printf("\n");
2494 }
2495 break;
2496
2497 case opt_bit:
2498 printf("%s%s\n", ((*((int *)value)) & (1 << ((ol->type >> 16) & 31)))?
2499 "" : "no_", name);
2500 break;
2501
2502 case opt_expand_bool:
2503 sprintf(CS name2, "*expand_%.50s", name);
2504 ol2 = find_option(name2, oltop, last);
2505 if (ol2 != NULL && ol2->value != NULL)
2506 {
2507 void *value2 = ol2->value;
2508 if (options_block != NULL)
2509 value2 = (void *)((uschar *)options_block + (long int)value2);
2510 s = *((uschar **)value2);
2511 if (s != NULL)
2512 {
2513 if (!no_labels) printf("%s = ", name);
2514 printf("%s\n", string_printing(s));
2515 break;
2516 }
2517 /* s == NULL => string not set; fall through */
2518 }
2519
2520 /* Fall through */
2521
2522 case opt_bool:
2523 case opt_bool_verify:
2524 case opt_bool_set:
2525 printf("%s%s\n", (*((BOOL *)value))? "" : "no_", name);
2526 break;
2527 }
2528 }
2529
2530
2531
2532 /*************************************************
2533 * Print value from main configuration *
2534 *************************************************/
2535
2536 /* This function, called as a result of encountering the -bP option,
2537 causes the value of any main configuration variable to be output if the
2538 second argument is NULL. There are some special values:
2539
2540 all print all main configuration options
2541 config_file print the name of the configuration file
2542 (configure_file will still work, for backward
2543 compatibility)
2544 routers print the routers' configurations
2545 transports print the transports' configuration
2546 authenticators print the authenticators' configuration
2547 macros print the macros' configuration
2548 router_list print a list of router names
2549 transport_list print a list of transport names
2550 authenticator_list print a list of authentication mechanism names
2551 macro_list print a list of macro names
2552 +name print a named list item
2553 local_scan print the local_scan options
2554 config print the configuration as it is parsed
2555 environment print the used execution environment
2556
2557 If the second argument is not NULL, it must be one of "router", "transport",
2558 "authenticator" or "macro" in which case the first argument identifies the
2559 driver whose options are to be printed.
2560
2561 Arguments:
2562 name option name if type == NULL; else driver name
2563 type NULL or driver type name, as described above
2564 no_labels avoid the "foo = " at the start of an item
2565
2566 Returns: nothing
2567 */
2568
2569 void
2570 readconf_print(uschar *name, uschar *type, BOOL no_labels)
2571 {
2572 BOOL names_only = FALSE;
2573 optionlist *ol;
2574 optionlist *ol2 = NULL;
2575 driver_instance *d = NULL;
2576 macro_item *m;
2577 int size = 0;
2578
2579 if (type == NULL)
2580 {
2581 if (*name == '+')
2582 {
2583 int i;
2584 tree_node *t;
2585 BOOL found = FALSE;
2586 static uschar *types[] = { US"address", US"domain", US"host",
2587 US"localpart" };
2588 static tree_node **anchors[] = { &addresslist_anchor, &domainlist_anchor,
2589 &hostlist_anchor, &localpartlist_anchor };
2590
2591 for (i = 0; i < 4; i++)
2592 {
2593 t = tree_search(*(anchors[i]), name+1);
2594 if (t != NULL)
2595 {
2596 found = TRUE;
2597 if (no_labels)
2598 printf("%s\n", ((namedlist_block *)(t->data.ptr))->string);
2599 else
2600 printf("%slist %s = %s\n", types[i], name+1,
2601 ((namedlist_block *)(t->data.ptr))->string);
2602 }
2603 }
2604
2605 if (!found)
2606 printf("no address, domain, host, or local part list called \"%s\" "
2607 "exists\n", name+1);
2608
2609 return;
2610 }
2611
2612 if ( Ustrcmp(name, "configure_file") == 0
2613 ||Ustrcmp(name, "config_file") == 0)
2614 {
2615 printf("%s\n", CS config_main_filename);
2616 return;
2617 }
2618
2619 if (Ustrcmp(name, "all") == 0)
2620 {
2621 for (ol = optionlist_config;
2622 ol < optionlist_config + optionlist_config_size; ol++)
2623 {
2624 if ((ol->type & opt_hidden) == 0)
2625 print_ol(ol, US ol->name, NULL,
2626 optionlist_config, optionlist_config_size,
2627 no_labels);
2628 }
2629 return;
2630 }
2631
2632 if (Ustrcmp(name, "local_scan") == 0)
2633 {
2634 #ifndef LOCAL_SCAN_HAS_OPTIONS
2635 printf("local_scan() options are not supported\n");
2636 #else
2637 for (ol = local_scan_options;
2638 ol < local_scan_options + local_scan_options_count; ol++)
2639 {
2640 print_ol(ol, US ol->name, NULL, local_scan_options,
2641 local_scan_options_count, no_labels);
2642 }
2643 #endif
2644 return;
2645 }
2646
2647 if (Ustrcmp(name, "config") == 0)
2648 {
2649 print_config(admin_user, no_labels);
2650 return;
2651 }
2652
2653 if (Ustrcmp(name, "routers") == 0)
2654 {
2655 type = US"router";
2656 name = NULL;
2657 }
2658 else if (Ustrcmp(name, "transports") == 0)
2659 {
2660 type = US"transport";
2661 name = NULL;
2662 }
2663
2664 else if (Ustrcmp(name, "authenticators") == 0)
2665 {
2666 type = US"authenticator";
2667 name = NULL;
2668 }
2669
2670 else if (Ustrcmp(name, "macros") == 0)
2671 {
2672 type = US"macro";
2673 name = NULL;
2674 }
2675
2676 else if (Ustrcmp(name, "router_list") == 0)
2677 {
2678 type = US"router";
2679 name = NULL;
2680 names_only = TRUE;
2681 }
2682
2683 else if (Ustrcmp(name, "transport_list") == 0)
2684 {
2685 type = US"transport";
2686 name = NULL;
2687 names_only = TRUE;
2688 }
2689
2690 else if (Ustrcmp(name, "authenticator_list") == 0)
2691 {
2692 type = US"authenticator";
2693 name = NULL;
2694 names_only = TRUE;
2695 }
2696
2697 else if (Ustrcmp(name, "macro_list") == 0)
2698 {
2699 type = US"macro";
2700 name = NULL;
2701 names_only = TRUE;
2702 }
2703
2704 else if (Ustrcmp(name, "environment") == 0)
2705 {
2706 if (environ)
2707 {
2708 uschar ** p;
2709 for (p = USS environ; *p; p++) ;
2710 qsort(environ, p - USS environ, sizeof(*p), string_compare_by_pointer);
2711
2712 for (p = USS environ; *p; p++)
2713 {
2714 uschar * q;
2715 if (no_labels && (q = Ustrchr(*p, '='))) *q = '\0';
2716 puts(CS *p);
2717 }
2718 }
2719 return;
2720 }
2721
2722 else
2723 {
2724 print_ol(find_option(name, optionlist_config, optionlist_config_size),
2725 name, NULL, optionlist_config, optionlist_config_size, no_labels);
2726 return;
2727 }
2728 }
2729
2730 /* Handle the options for a router or transport. Skip options that are flagged
2731 as hidden. Some of these are options with names starting with '*', used for
2732 internal alternative representations of other options (which the printing
2733 function will sort out). Others are synonyms kept for backward compatibility.
2734 */
2735
2736 if (Ustrcmp(type, "router") == 0)
2737 {
2738 d = (driver_instance *)routers;
2739 ol2 = optionlist_routers;
2740 size = optionlist_routers_size;
2741 }
2742 else if (Ustrcmp(type, "transport") == 0)
2743 {
2744 d = (driver_instance *)transports;
2745 ol2 = optionlist_transports;
2746 size = optionlist_transports_size;
2747 }
2748 else if (Ustrcmp(type, "authenticator") == 0)
2749 {
2750 d = (driver_instance *)auths;
2751 ol2 = optionlist_auths;
2752 size = optionlist_auths_size;
2753 }
2754
2755 else if (Ustrcmp(type, "macro") == 0)
2756 {
2757 /* People store passwords in macros and they were previously not available
2758 for printing. So we have an admin_users restriction. */
2759 if (!admin_user)
2760 {
2761 fprintf(stderr, "exim: permission denied\n");
2762 exit(EXIT_FAILURE);
2763 }
2764 for (m = macros; m != NULL; m = m->next)
2765 {
2766 if (name == NULL || Ustrcmp(name, m->name) == 0)
2767 {
2768 if (names_only)
2769 printf("%s\n", CS m->name);
2770 else
2771 printf("%s=%s\n", CS m->name, CS m->replacement);
2772 if (name != NULL)
2773 return;
2774 }
2775 }
2776 if (name != NULL)
2777 printf("%s %s not found\n", type, name);
2778 return;
2779 }
2780
2781 if (names_only)
2782 {
2783 for (; d != NULL; d = d->next) printf("%s\n", CS d->name);
2784 return;
2785 }
2786
2787 /* Either search for a given driver, or print all of them */
2788
2789 for (; d != NULL; d = d->next)
2790 {
2791 if (name == NULL)
2792 printf("\n%s %s:\n", d->name, type);
2793 else if (Ustrcmp(d->name, name) != 0) continue;
2794
2795 for (ol = ol2; ol < ol2 + size; ol++)
2796 {
2797 if ((ol->type & opt_hidden) == 0)
2798 print_ol(ol, US ol->name, d, ol2, size, no_labels);
2799 }
2800
2801 for (ol = d->info->options;
2802 ol < d->info->options + *(d->info->options_count); ol++)
2803 {
2804 if ((ol->type & opt_hidden) == 0)
2805 print_ol(ol, US ol->name, d, d->info->options, *(d->info->options_count), no_labels);
2806 }
2807 if (name != NULL) return;
2808 }
2809 if (name != NULL) printf("%s %s not found\n", type, name);
2810 }
2811
2812
2813
2814 /*************************************************
2815 * Read a named list item *
2816 *************************************************/
2817
2818 /* This function reads a name and a list (i.e. string). The name is used to
2819 save the list in a tree, sorted by its name. Each entry also has a number,
2820 which can be used for caching tests, but if the string contains any expansion
2821 items other than $key, the number is set negative to inhibit caching. This
2822 mechanism is used for domain, host, and address lists that are referenced by
2823 the "+name" syntax.
2824
2825 Arguments:
2826 anchorp points to the tree anchor
2827 numberp points to the current number for this tree
2828 max the maximum number permitted
2829 s the text of the option line, starting immediately after the name
2830 of the list type
2831 tname the name of the list type, for messages
2832
2833 Returns: nothing
2834 */
2835
2836 static void
2837 read_named_list(tree_node **anchorp, int *numberp, int max, uschar *s,
2838 uschar *tname)
2839 {
2840 BOOL forcecache = FALSE;
2841 uschar *ss;
2842 tree_node *t;
2843 namedlist_block *nb = store_get(sizeof(namedlist_block));
2844
2845 if (Ustrncmp(s, "_cache", 6) == 0)
2846 {
2847 forcecache = TRUE;
2848 s += 6;
2849 }
2850
2851 if (!isspace(*s))
2852 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "unrecognized configuration line");
2853
2854 if (*numberp >= max)
2855 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "too many named %ss (max is %d)\n",
2856 tname, max);
2857
2858 while (isspace(*s)) s++;
2859 ss = s;
2860 while (isalnum(*s) || *s == '_') s++;
2861 t = store_get(sizeof(tree_node) + s-ss);
2862 Ustrncpy(t->name, ss, s-ss);
2863 t->name[s-ss] = 0;
2864 while (isspace(*s)) s++;
2865
2866 if (!tree_insertnode(anchorp, t))
2867 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
2868 "duplicate name \"%s\" for a named %s", t->name, tname);
2869
2870 t->data.ptr = nb;
2871 nb->number = *numberp;
2872 *numberp += 1;
2873
2874 if (*s++ != '=') log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
2875 "missing '=' after \"%s\"", t->name);
2876 while (isspace(*s)) s++;
2877 nb->string = read_string(s, t->name);
2878 nb->cache_data = NULL;
2879
2880 /* Check the string for any expansions; if any are found, mark this list
2881 uncacheable unless the user has explicited forced caching. */
2882
2883 if (!forcecache && Ustrchr(nb->string, '$') != NULL) nb->number = -1;
2884 }
2885
2886
2887
2888
2889 /*************************************************
2890 * Unpick data for a rate limit *
2891 *************************************************/
2892
2893 /* This function is called to unpick smtp_ratelimit_{mail,rcpt} into four
2894 separate values.
2895
2896 Arguments:
2897 s string, in the form t,b,f,l
2898 where t is the threshold (integer)
2899 b is the initial delay (time)
2900 f is the multiplicative factor (fixed point)
2901 k is the maximum time (time)
2902 threshold where to store threshold
2903 base where to store base in milliseconds
2904 factor where to store factor in milliseconds
2905 limit where to store limit
2906
2907 Returns: nothing (panics on error)
2908 */
2909
2910 static void
2911 unpick_ratelimit(uschar *s, int *threshold, int *base, double *factor,
2912 int *limit)
2913 {
2914 uschar bstring[16], lstring[16];
2915
2916 if (sscanf(CS s, "%d, %15[0123456789smhdw.], %lf, %15s", threshold, bstring,
2917 factor, lstring) == 4)
2918 {
2919 *base = readconf_readtime(bstring, 0, TRUE);
2920 *limit = readconf_readtime(lstring, 0, TRUE);
2921 if (*base >= 0 && *limit >= 0) return;
2922 }
2923 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "malformed ratelimit data: %s", s);
2924 }
2925
2926
2927
2928
2929 /*************************************************
2930 * Drop privs for checking TLS config *
2931 *************************************************/
2932
2933 /* We want to validate TLS options during readconf, but do not want to be
2934 root when we call into the TLS library, in case of library linkage errors
2935 which cause segfaults; before this check, those were always done as the Exim
2936 runtime user and it makes sense to continue with that.
2937
2938 Assumes: tls_require_ciphers has been set, if it will be
2939 exim_user has been set, if it will be
2940 exim_group has been set, if it will be
2941
2942 Returns: bool for "okay"; false will cause caller to immediately exit.
2943 */
2944
2945 #ifdef SUPPORT_TLS
2946 static BOOL
2947 tls_dropprivs_validate_require_cipher(BOOL nowarn)
2948 {
2949 const uschar *errmsg;
2950 pid_t pid;
2951 int rc, status;
2952 void (*oldsignal)(int);
2953
2954 /* If TLS will never be used, no point checking ciphers */
2955
2956 if ( !tls_advertise_hosts
2957 || !*tls_advertise_hosts
2958 || Ustrcmp(tls_advertise_hosts, ":") == 0
2959 )
2960 return TRUE;
2961 else if (!nowarn && !tls_certificate)
2962 log_write(0, LOG_MAIN,
2963 "Warning: No server certificate defined; will use a selfsigned one.\n"
2964 " Suggested action: either install a certificate or change tls_advertise_hosts option");
2965
2966 oldsignal = signal(SIGCHLD, SIG_DFL);
2967
2968 fflush(NULL);
2969 if ((pid = fork()) < 0)
2970 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "fork failed for TLS check");
2971
2972 if (pid == 0)
2973 {
2974 /* in some modes, will have dropped privilege already */
2975 if (!geteuid())
2976 exim_setugid(exim_uid, exim_gid, FALSE,
2977 US"calling tls_validate_require_cipher");
2978
2979 errmsg = tls_validate_require_cipher();
2980 if (errmsg)
2981 {
2982 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
2983 "tls_require_ciphers invalid: %s", errmsg);
2984 }
2985 fflush(NULL);
2986 _exit(0);
2987 }
2988
2989 do {
2990 rc = waitpid(pid, &status, 0);
2991 } while (rc < 0 && errno == EINTR);
2992
2993 DEBUG(D_tls)
2994 debug_printf("tls_validate_require_cipher child %d ended: status=0x%x\n",
2995 (int)pid, status);
2996
2997 signal(SIGCHLD, oldsignal);
2998
2999 return status == 0;
3000 }
3001 #endif /* SUPPORT_TLS */
3002
3003
3004
3005
3006 /*************************************************
3007 * Read main configuration options *
3008 *************************************************/
3009
3010 /* This function is the first to be called for configuration reading. It
3011 opens the configuration file and reads general configuration settings until
3012 it reaches the end of the configuration section. The file is then left open so
3013 that the remaining configuration data can subsequently be read if needed for
3014 this run of Exim.
3015
3016 The configuration file must be owned either by root or exim, and be writeable
3017 only by root or uid/gid exim. The values for Exim's uid and gid can be changed
3018 in the config file, so the test is done on the compiled in values. A slight
3019 anomaly, to be carefully documented.
3020
3021 The name of the configuration file is taken from a list that is included in the
3022 binary of Exim. It can be altered from the command line, but if that is done,
3023 root privilege is immediately withdrawn unless the caller is root or exim.
3024 The first file on the list that exists is used.
3025
3026 For use on multiple systems that share file systems, first look for a
3027 configuration file whose name has the current node name on the end. If that is
3028 not found, try the generic name. For really contorted configurations, that run
3029 multiple Exims with different uid settings, first try adding the effective uid
3030 before the node name. These complications are going to waste resources on most
3031 systems. Therefore they are available only when requested by compile-time
3032 options. */
3033
3034 void
3035 readconf_main(BOOL nowarn)
3036 {
3037 int sep = 0;
3038 struct stat statbuf;
3039 uschar *s, *filename;
3040 const uschar *list = config_main_filelist;
3041
3042 /* Loop through the possible file names */
3043
3044 while((filename = string_nextinlist(&list, &sep, big_buffer, big_buffer_size))
3045 != NULL)
3046 {
3047
3048 /* Cut out all the fancy processing unless specifically wanted */
3049
3050 #if defined(CONFIGURE_FILE_USE_NODE) || defined(CONFIGURE_FILE_USE_EUID)
3051 uschar *suffix = filename + Ustrlen(filename);
3052
3053 /* Try for the node-specific file if a node name exists */
3054
3055 #ifdef CONFIGURE_FILE_USE_NODE
3056 struct utsname uts;
3057 if (uname(&uts) >= 0)
3058 {
3059 #ifdef CONFIGURE_FILE_USE_EUID
3060 sprintf(CS suffix, ".%ld.%.256s", (long int)original_euid, uts.nodename);
3061 config_file = Ufopen(filename, "rb");
3062 if (config_file == NULL)
3063 #endif /* CONFIGURE_FILE_USE_EUID */
3064 {
3065 sprintf(CS suffix, ".%.256s", uts.nodename);
3066 config_file = Ufopen(filename, "rb");
3067 }
3068 }
3069 #endif /* CONFIGURE_FILE_USE_NODE */
3070
3071 /* Otherwise, try the generic name, possibly with the euid added */
3072
3073 #ifdef CONFIGURE_FILE_USE_EUID
3074 if (config_file == NULL)
3075 {
3076 sprintf(CS suffix, ".%ld", (long int)original_euid);
3077 config_file = Ufopen(filename, "rb");
3078 }
3079 #endif /* CONFIGURE_FILE_USE_EUID */
3080
3081 /* Finally, try the unadorned name */
3082
3083 if (config_file == NULL)
3084 {
3085 *suffix = 0;
3086 config_file = Ufopen(filename, "rb");
3087 }
3088 #else /* if neither defined */
3089
3090 /* This is the common case when the fancy processing is not included. */
3091
3092 config_file = Ufopen(filename, "rb");
3093 #endif
3094
3095 /* If the file does not exist, continue to try any others. For any other
3096 error, break out (and die). */
3097
3098 if (config_file != NULL || errno != ENOENT) break;
3099 }
3100
3101 /* Now, once we found and opened our configuration file, we change the directory
3102 to a safe place. Later we change to $spool_directory. */
3103
3104 if (Uchdir("/") < 0)
3105 {
3106 perror("exim: chdir `/': ");
3107 exit(EXIT_FAILURE);
3108 }
3109
3110 /* On success, save the name for verification; config_filename is used when
3111 logging configuration errors (it changes for .included files) whereas
3112 config_main_filename is the name shown by -bP. Failure to open a configuration
3113 file is a serious disaster. */
3114
3115 if (config_file != NULL)
3116 {
3117 uschar *p;
3118 config_filename = config_main_filename = string_copy(filename);
3119
3120 p = Ustrrchr(filename, '/');
3121 config_main_directory = p ? string_copyn(filename, p - filename)
3122 : string_copy(US".");
3123 }
3124 else
3125 {
3126 if (filename == NULL)
3127 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "non-existent configuration file(s): "
3128 "%s", config_main_filelist);
3129 else
3130 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "%s", string_open_failed(errno,
3131 "configuration file %s", filename));
3132 }
3133
3134 /* Check the status of the file we have opened, if we have retained root
3135 privileges and the file isn't /dev/null (which *should* be 0666). */
3136
3137 if (trusted_config && Ustrcmp(filename, US"/dev/null"))
3138 {
3139 if (fstat(fileno(config_file), &statbuf) != 0)
3140 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "failed to stat configuration file %s",
3141 big_buffer);
3142
3143 if ((statbuf.st_uid != root_uid /* owner not root */
3144 #ifdef CONFIGURE_OWNER
3145 && statbuf.st_uid != config_uid /* owner not the special one */
3146 #endif
3147 ) || /* or */
3148 (statbuf.st_gid != root_gid /* group not root & */
3149 #ifdef CONFIGURE_GROUP
3150 && statbuf.st_gid != config_gid /* group not the special one */
3151 #endif
3152 && (statbuf.st_mode & 020) != 0) || /* group writeable */
3153 /* or */
3154 ((statbuf.st_mode & 2) != 0)) /* world writeable */
3155
3156 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "Exim configuration file %s has the "
3157 "wrong owner, group, or mode", big_buffer);
3158 }
3159
3160 /* Process the main configuration settings. They all begin with a lower case
3161 letter. If we see something starting with an upper case letter, it is taken as
3162 a macro definition. */
3163
3164 while ((s = get_config_line()) != NULL)
3165 {
3166 if (isupper(s[0])) read_macro_assignment(s);
3167
3168 else if (Ustrncmp(s, "domainlist", 10) == 0)
3169 read_named_list(&domainlist_anchor, &domainlist_count,
3170 MAX_NAMED_LIST, s+10, US"domain list");
3171
3172 else if (Ustrncmp(s, "hostlist", 8) == 0)
3173 read_named_list(&hostlist_anchor, &hostlist_count,
3174 MAX_NAMED_LIST, s+8, US"host list");
3175
3176 else if (Ustrncmp(s, US"addresslist", 11) == 0)
3177 read_named_list(&addresslist_anchor, &addresslist_count,
3178 MAX_NAMED_LIST, s+11, US"address list");
3179
3180 else if (Ustrncmp(s, US"localpartlist", 13) == 0)
3181 read_named_list(&localpartlist_anchor, &localpartlist_count,
3182 MAX_NAMED_LIST, s+13, US"local part list");
3183
3184 else
3185 (void) readconf_handle_option(s, optionlist_config, optionlist_config_size,
3186 NULL, US"main option \"%s\" unknown");
3187 }
3188
3189
3190 /* If local_sender_retain is set, local_from_check must be unset. */
3191
3192 if (local_sender_retain && local_from_check)
3193 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "both local_from_check and "
3194 "local_sender_retain are set; this combination is not allowed");
3195
3196 /* If the timezone string is empty, set it to NULL, implying no TZ variable
3197 wanted. */
3198
3199 if (timezone_string != NULL && *timezone_string == 0) timezone_string = NULL;
3200
3201 /* The max retry interval must not be greater than 24 hours. */
3202
3203 if (retry_interval_max > 24*60*60) retry_interval_max = 24*60*60;
3204
3205 /* remote_max_parallel must be > 0 */
3206
3207 if (remote_max_parallel <= 0) remote_max_parallel = 1;
3208
3209 /* Save the configured setting of freeze_tell, so we can re-instate it at the
3210 start of a new SMTP message. */
3211
3212 freeze_tell_config = freeze_tell;
3213
3214 /* The primary host name may be required for expansion of spool_directory
3215 and log_file_path, so make sure it is set asap. It is obtained from uname(),
3216 but if that yields an unqualified value, make a FQDN by using gethostbyname to
3217 canonize it. Some people like upper case letters in their host names, so we
3218 don't force the case. */
3219
3220 if (primary_hostname == NULL)
3221 {
3222 const uschar *hostname;
3223 struct utsname uts;
3224 if (uname(&uts) < 0)
3225 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "uname() failed to yield host name");
3226 hostname = US uts.nodename;
3227
3228 if (Ustrchr(hostname, '.') == NULL)
3229 {
3230 int af = AF_INET;
3231 struct hostent *hostdata;
3232
3233 #if HAVE_IPV6
3234 if (!disable_ipv6 && (dns_ipv4_lookup == NULL ||
3235 match_isinlist(hostname, CUSS &dns_ipv4_lookup, 0, NULL, NULL,
3236 MCL_DOMAIN, TRUE, NULL) != OK))
3237 af = AF_INET6;
3238 #else
3239 af = AF_INET;
3240 #endif
3241
3242 for (;;)
3243 {
3244 #if HAVE_IPV6
3245 #if HAVE_GETIPNODEBYNAME
3246 int error_num;
3247 hostdata = getipnodebyname(CS hostname, af, 0, &error_num);
3248 #else
3249 hostdata = gethostbyname2(CS hostname, af);
3250 #endif
3251 #else
3252 hostdata = gethostbyname(CS hostname);
3253 #endif
3254
3255 if (hostdata != NULL)
3256 {
3257 hostname = US hostdata->h_name;
3258 break;
3259 }
3260
3261 if (af == AF_INET) break;
3262 af = AF_INET;
3263 }
3264 }
3265
3266 primary_hostname = string_copy(hostname);
3267 }
3268
3269 /* Set up default value for smtp_active_hostname */
3270
3271 smtp_active_hostname = primary_hostname;
3272
3273 /* If spool_directory wasn't set in the build-time configuration, it must have
3274 got set above. Of course, writing to the log may not work if log_file_path is
3275 not set, but it will at least get to syslog or somewhere, with any luck. */
3276
3277 if (*spool_directory == 0)
3278 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "spool_directory undefined: cannot "
3279 "proceed");
3280
3281 /* Expand the spool directory name; it may, for example, contain the primary
3282 host name. Same comment about failure. */
3283
3284 s = expand_string(spool_directory);
3285 if (s == NULL)
3286 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "failed to expand spool_directory "
3287 "\"%s\": %s", spool_directory, expand_string_message);
3288 spool_directory = s;
3289
3290 /* Expand log_file_path, which must contain "%s" in any component that isn't
3291 the null string or "syslog". It is also allowed to contain one instance of %D
3292 or %M. However, it must NOT contain % followed by anything else. */
3293
3294 if (*log_file_path != 0)
3295 {
3296 const uschar *ss, *sss;
3297 int sep = ':'; /* Fixed for log file path */
3298 s = expand_string(log_file_path);
3299 if (s == NULL)
3300 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "failed to expand log_file_path "
3301 "\"%s\": %s", log_file_path, expand_string_message);
3302
3303 ss = s;
3304 while ((sss = string_nextinlist(&ss,&sep,big_buffer,big_buffer_size)) != NULL)
3305 {
3306 uschar *t;
3307 if (sss[0] == 0 || Ustrcmp(sss, "syslog") == 0) continue;
3308 t = Ustrstr(sss, "%s");
3309 if (t == NULL)
3310 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "log_file_path \"%s\" does not "
3311 "contain \"%%s\"", sss);
3312 *t = 'X';
3313 t = Ustrchr(sss, '%');
3314 if (t != NULL)
3315 {
3316 if ((t[1] != 'D' && t[1] != 'M') || Ustrchr(t+2, '%') != NULL)
3317 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "log_file_path \"%s\" contains "
3318 "unexpected \"%%\" character", s);
3319 }
3320 }
3321
3322 log_file_path = s;
3323 }
3324
3325 /* Interpret syslog_facility into an integer argument for 'ident' param to
3326 openlog(). Default is LOG_MAIL set in globals.c. Allow the user to omit the
3327 leading "log_". */
3328
3329 if (syslog_facility_str != NULL)
3330 {
3331 int i;
3332 uschar *s = syslog_facility_str;
3333
3334 if ((Ustrlen(syslog_facility_str) >= 4) &&
3335 (strncmpic(syslog_facility_str, US"log_", 4) == 0))
3336 s += 4;
3337
3338 for (i = 0; i < syslog_list_size; i++)
3339 {
3340 if (strcmpic(s, syslog_list[i].name) == 0)
3341 {
3342 syslog_facility = syslog_list[i].value;
3343 break;
3344 }
3345 }
3346
3347 if (i >= syslog_list_size)
3348 {
3349 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
3350 "failed to interpret syslog_facility \"%s\"", syslog_facility_str);
3351 }
3352 }
3353
3354 /* Expand pid_file_path */
3355
3356 if (*pid_file_path != 0)
3357 {
3358 s = expand_string(pid_file_path);
3359 if (s == NULL)
3360 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "failed to expand pid_file_path "
3361 "\"%s\": %s", pid_file_path, expand_string_message);
3362 pid_file_path = s;
3363 }
3364
3365 /* Set default value of process_log_path */
3366
3367 if (process_log_path == NULL || *process_log_path =='\0')
3368 process_log_path = string_sprintf("%s/exim-process.info", spool_directory);
3369
3370 /* Compile the regex for matching a UUCP-style "From_" line in an incoming
3371 message. */
3372
3373 regex_From = regex_must_compile(uucp_from_pattern, FALSE, TRUE);
3374
3375 /* Unpick the SMTP rate limiting options, if set */
3376
3377 if (smtp_ratelimit_mail != NULL)
3378 {
3379 unpick_ratelimit(smtp_ratelimit_mail, &smtp_rlm_threshold,
3380 &smtp_rlm_base, &smtp_rlm_factor, &smtp_rlm_limit);
3381 }
3382
3383 if (smtp_ratelimit_rcpt != NULL)
3384 {
3385 unpick_ratelimit(smtp_ratelimit_rcpt, &smtp_rlr_threshold,
3386 &smtp_rlr_base, &smtp_rlr_factor, &smtp_rlr_limit);
3387 }
3388
3389 /* The qualify domains default to the primary host name */
3390
3391 if (qualify_domain_sender == NULL)
3392 qualify_domain_sender = primary_hostname;
3393 if (qualify_domain_recipient == NULL)
3394 qualify_domain_recipient = qualify_domain_sender;
3395
3396 /* Setting system_filter_user in the configuration sets the gid as well if a
3397 name is given, but a numerical value does not. */
3398
3399 if (system_filter_uid_set && !system_filter_gid_set)
3400 {
3401 struct passwd *pw = getpwuid(system_filter_uid);
3402 if (pw == NULL)
3403 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "Failed to look up uid %ld",
3404 (long int)system_filter_uid);
3405 system_filter_gid = pw->pw_gid;
3406 system_filter_gid_set = TRUE;
3407 }
3408
3409 /* If the errors_reply_to field is set, check that it is syntactically valid
3410 and ensure it contains a domain. */
3411
3412 if (errors_reply_to != NULL)
3413 {
3414 uschar *errmess;
3415 int start, end, domain;
3416 uschar *recipient = parse_extract_address(errors_reply_to, &errmess,
3417 &start, &end, &domain, FALSE);
3418
3419 if (recipient == NULL)
3420 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
3421 "error in errors_reply_to (%s): %s", errors_reply_to, errmess);
3422
3423 if (domain == 0)
3424 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
3425 "errors_reply_to (%s) does not contain a domain", errors_reply_to);
3426 }
3427
3428 /* If smtp_accept_queue or smtp_accept_max_per_host is set, then
3429 smtp_accept_max must also be set. */
3430
3431 if (smtp_accept_max == 0 &&
3432 (smtp_accept_queue > 0 || smtp_accept_max_per_host != NULL))
3433 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
3434 "smtp_accept_max must be set if smtp_accept_queue or "
3435 "smtp_accept_max_per_host is set");
3436
3437 /* Set up the host number if anything is specified. It is an expanded string
3438 so that it can be computed from the host name, for example. We do this last
3439 so as to ensure that everything else is set up before the expansion. */
3440
3441 if (host_number_string != NULL)
3442 {
3443 long int n;
3444 uschar *end;
3445 uschar *s = expand_string(host_number_string);
3446 if (s == NULL)
3447 log_write(0, LOG_MAIN|LOG_PANIC_DIE,
3448 "failed to expand localhost_number \"%s\": %s",
3449 host_number_string, expand_string_message);
3450 n = Ustrtol(s, &end, 0);
3451 while (isspace(*end)) end++;
3452 if (*end != 0)
3453 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
3454 "localhost_number value is not a number: %s", s);
3455 if (n > LOCALHOST_MAX)
3456 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
3457 "localhost_number is greater than the maximum allowed value (%d)",
3458 LOCALHOST_MAX);
3459 host_number = n;
3460 }
3461
3462 #ifdef SUPPORT_TLS
3463 /* If tls_verify_hosts is set, tls_verify_certificates must also be set */
3464
3465 if ((tls_verify_hosts != NULL || tls_try_verify_hosts != NULL) &&
3466 tls_verify_certificates == NULL)
3467 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
3468 "tls_%sverify_hosts is set, but tls_verify_certificates is not set",
3469 (tls_verify_hosts != NULL)? "" : "try_");
3470
3471 /* This also checks that the library linkage is working and we can call
3472 routines in it, so call even if tls_require_ciphers is unset */
3473 if (!tls_dropprivs_validate_require_cipher(nowarn))
3474 exit(1);
3475
3476 /* Magic number: at time of writing, 1024 has been the long-standing value
3477 used by so many clients, and what Exim used to use always, that it makes
3478 sense to just min-clamp this max-clamp at that. */
3479 if (tls_dh_max_bits < 1024)
3480 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
3481 "tls_dh_max_bits is too small, must be at least 1024 for interop");
3482
3483 /* If openssl_options is set, validate it */
3484 if (openssl_options != NULL)
3485 {
3486 # ifdef USE_GNUTLS
3487 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
3488 "openssl_options is set but we're using GnuTLS");
3489 # else
3490 long dummy;
3491 if (!(tls_openssl_options_parse(openssl_options, &dummy)))
3492 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
3493 "openssl_options parse error: %s", openssl_options);
3494 # endif
3495 }
3496 #endif /*SUPPORT_TLS*/
3497
3498 if (!nowarn && !keep_environment && environ && *environ)
3499 log_write(0, LOG_MAIN,
3500 "Warning: purging the environment.\n"
3501 " Suggested action: use keep_environment.");
3502 }
3503
3504
3505
3506 /*************************************************
3507 * Initialize one driver *
3508 *************************************************/
3509
3510 /* This is called once the driver's generic options, if any, have been read.
3511 We can now find the driver, set up defaults for the private options, and
3512 unset any "set" bits in the private options table (which might have been
3513 set by another incarnation of the same driver).
3514
3515 Arguments:
3516 d pointer to driver instance block, with generic
3517 options filled in
3518 drivers_available vector of available drivers
3519 size_of_info size of each block in drivers_available
3520 class class of driver, for error message
3521
3522 Returns: pointer to the driver info block
3523 */
3524
3525 static driver_info *
3526 init_driver(driver_instance *d, driver_info *drivers_available,
3527 int size_of_info, uschar *class)
3528 {
3529 driver_info *dd;
3530
3531 for (dd = drivers_available; dd->driver_name[0] != 0;
3532 dd = (driver_info *)(((uschar *)dd) + size_of_info))
3533 {
3534 if (Ustrcmp(d->driver_name, dd->driver_name) == 0)
3535 {
3536 int i;
3537 int len = dd->options_len;
3538 d->info = dd;
3539 d->options_block = store_get(len);
3540 memcpy(d->options_block, dd->options_block, len);
3541 for (i = 0; i < *(dd->options_count); i++)
3542 dd->options[i].type &= ~opt_set;
3543 return dd;
3544 }
3545 }
3546
3547 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
3548 "%s %s: cannot find %s driver \"%s\"", class, d->name, class, d->driver_name);
3549
3550 return NULL; /* never obeyed */
3551 }
3552
3553
3554
3555
3556 /*************************************************
3557 * Initialize driver list *
3558 *************************************************/
3559
3560 /* This function is called for routers, transports, and authentication
3561 mechanisms. It reads the data from the current point in the configuration file
3562 up to the end of the section, and sets up a chain of instance blocks according
3563 to the file's contents. The file will already have been opened by a call to
3564 readconf_main, and must be left open for subsequent reading of further data.
3565
3566 Any errors cause a panic crash. Note that the blocks with names driver_info and
3567 driver_instance must map the first portions of all the _info and _instance
3568 blocks for this shared code to work.
3569
3570 Arguments:
3571 class "router", "transport", or "authenticator"
3572 anchor &routers, &transports, &auths
3573 drivers_available available drivers
3574 size_of_info size of each info block
3575 instance_default points to default data for an instance
3576 instance_size size of instance block
3577 driver_optionlist generic option list
3578 driver_optionlist_count count of generic option list
3579
3580 Returns: nothing
3581 */
3582
3583 void
3584 readconf_driver_init(
3585 uschar *class,
3586 driver_instance **anchor,
3587 driver_info *drivers_available,
3588 int size_of_info,
3589 void *instance_default,
3590 int instance_size,
3591 optionlist *driver_optionlist,
3592 int driver_optionlist_count)
3593 {
3594 driver_instance **p = anchor;
3595 driver_instance *d = NULL;
3596 uschar *buffer;
3597
3598 while ((buffer = get_config_line()) != NULL)
3599 {
3600 uschar name[64];
3601 uschar *s;
3602
3603 /* Read the first name on the line and test for the start of a new driver. A
3604 macro definition indicates the end of the previous driver. If this isn't the
3605 start of a new driver, the line will be re-read. */
3606
3607 s = readconf_readname(name, sizeof(name), buffer);
3608
3609 /* Handle macro definition, first finishing off the initialization of the
3610 previous driver, if any. */
3611
3612 if (isupper(*name) && *s == '=')
3613 {
3614 if (d)
3615 {
3616 if (!d->driver_name)
3617 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
3618 "no driver defined for %s \"%s\"", class, d->name);
3619 (d->info->init)(d);
3620 d = NULL;
3621 }
3622 read_macro_assignment(buffer);
3623 continue;
3624 }
3625
3626 /* If the line starts with a name terminated by a colon, we are at the
3627 start of the definition of a new driver. The rest of the line must be
3628 blank. */
3629
3630 if (*s++ == ':')
3631 {
3632 int i;
3633
3634 /* Finish off initializing the previous driver. */
3635
3636 if (d)
3637 {
3638 if (!d->driver_name)
3639 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
3640 "no driver defined for %s \"%s\"", class, d->name);
3641 (d->info->init)(d);
3642 }
3643
3644 /* Check that we haven't already got a driver of this name */
3645
3646 for (d = *anchor; d; d = d->next)
3647 if (Ustrcmp(name, d->name) == 0)
3648 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
3649 "there are two %ss called \"%s\"", class, name);
3650
3651 /* Set up a new driver instance data block on the chain, with
3652 its default values installed. */
3653
3654 d = store_get(instance_size);
3655 memcpy(d, instance_default, instance_size);
3656 *p = d;
3657 p = &d->next;
3658 d->name = string_copy(name);
3659
3660 /* Clear out the "set" bits in the generic options */
3661
3662 for (i = 0; i < driver_optionlist_count; i++)
3663 driver_optionlist[i].type &= ~opt_set;
3664
3665 /* Check nothing more on this line, then do the next loop iteration. */
3666
3667 while (isspace(*s)) s++;
3668 if (*s != 0) extra_chars_error(s, US"driver name ", name, US"");
3669 continue;
3670 }
3671
3672 /* Not the start of a new driver. Give an error if we have not set up a
3673 current driver yet. */
3674
3675 if (!d)
3676 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "%s name missing", class);
3677
3678 /* First look to see if this is a generic option; if it is "driver",
3679 initialize the driver. If is it not a generic option, we can look for a
3680 private option provided that the driver has been previously set up. */
3681
3682 if (readconf_handle_option(buffer, driver_optionlist,
3683 driver_optionlist_count, d, NULL))
3684 {
3685 if (!d->info && d->driver_name)
3686 init_driver(d, drivers_available, size_of_info, class);
3687 }
3688
3689 /* Handle private options - pass the generic block because some may
3690 live therein. A flag with each option indicates if it is in the public
3691 block. */
3692
3693 else if (d->info)
3694 readconf_handle_option(buffer, d->info->options,
3695 *(d->info->options_count), d, US"option \"%s\" unknown");
3696
3697 /* The option is not generic and the driver name has not yet been given. */
3698
3699 else log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "option \"%s\" unknown "
3700 "(\"driver\" must be specified before any private options)", name);
3701 }
3702
3703 /* Run the initialization function for the final driver. */
3704
3705 if (d)
3706 {
3707 if (!d->driver_name)
3708 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
3709 "no driver defined for %s \"%s\"", class, d->name);
3710 (d->info->init)(d);
3711 }
3712 }
3713
3714
3715
3716 /*************************************************
3717 * Check driver dependency *
3718 *************************************************/
3719
3720 /* This function is passed a driver instance and a string. It checks whether
3721 any of the string options for the driver contains the given string as an
3722 expansion variable.
3723
3724 Arguments:
3725 d points to a driver instance block
3726 s the string to search for
3727
3728 Returns: TRUE if a dependency is found
3729 */
3730
3731 BOOL
3732 readconf_depends(driver_instance *d, uschar *s)
3733 {
3734 int count = *(d->info->options_count);
3735 optionlist *ol;
3736 uschar *ss;
3737
3738 for (ol = d->info->options; ol < d->info->options + count; ol++)
3739 {
3740 void *options_block;
3741 uschar *value;
3742 int type = ol->type & opt_mask;
3743 if (type != opt_stringptr) continue;
3744 options_block = ((ol->type & opt_public) == 0)? d->options_block : (void *)d;
3745 value = *(uschar **)((uschar *)options_block + (long int)(ol->value));
3746 if (value != NULL && (ss = Ustrstr(value, s)) != NULL)
3747 {
3748 if (ss <= value || (ss[-1] != '$' && ss[-1] != '{') ||
3749 isalnum(ss[Ustrlen(s)])) continue;
3750 DEBUG(D_transport) debug_printf("driver %s: \"%s\" option depends on %s\n",
3751 d->name, ol->name, s);
3752 return TRUE;
3753 }
3754 }
3755
3756 DEBUG(D_transport) debug_printf("driver %s does not depend on %s\n", d->name, s);
3757 return FALSE;
3758 }
3759
3760
3761
3762
3763 /*************************************************
3764 * Decode an error type for retries *
3765 *************************************************/
3766
3767 /* This function is global because it is also called from the main
3768 program when testing retry information. It decodes strings such as "quota_7d"
3769 into numerical error codes.
3770
3771 Arguments:
3772 pp points to start of text
3773 p points past end of text
3774 basic_errno points to an int to receive the main error number
3775 more_errno points to an int to receive the secondary error data
3776
3777 Returns: NULL if decoded correctly; else points to error text
3778 */
3779
3780 uschar *
3781 readconf_retry_error(const uschar *pp, const uschar *p,
3782 int *basic_errno, int *more_errno)
3783 {
3784 int len;
3785 const uschar *q = pp;
3786 while (q < p && *q != '_') q++;
3787 len = q - pp;
3788
3789 if (len == 5 && strncmpic(pp, US"quota", len) == 0)
3790 {
3791 *basic_errno = ERRNO_EXIMQUOTA;
3792 if (q != p && (*more_errno = readconf_readtime(q+1, *p, FALSE)) < 0)
3793 return US"bad time value";
3794 }
3795
3796 else if (len == 7 && strncmpic(pp, US"refused", len) == 0)
3797 {
3798 *basic_errno = ECONNREFUSED;
3799 if (q != p)
3800 {
3801 if (strncmpic(q+1, US"MX", p-q-1) == 0) *more_errno = 'M';
3802 else if (strncmpic(q+1, US"A", p-q-1) == 0) *more_errno = 'A';
3803 else return US"A or MX expected after \"refused\"";
3804 }
3805 }
3806
3807 else if (len == 7 && strncmpic(pp, US"timeout", len) == 0)
3808 {
3809 *basic_errno = ETIMEDOUT;
3810 if (q != p)
3811 {
3812 int i;
3813 int xlen = p - q - 1;
3814 const uschar *x = q + 1;
3815
3816 static uschar *extras[] =
3817 { US"A", US"MX", US"connect", US"connect_A", US"connect_MX" };
3818 static int values[] =
3819 { 'A', 'M', RTEF_CTOUT, RTEF_CTOUT|'A', RTEF_CTOUT|'M' };
3820
3821 for (i = 0; i < sizeof(extras)/sizeof(uschar *); i++)
3822 if (strncmpic(x, extras[i], xlen) == 0)
3823 {
3824 *more_errno = values[i];
3825 break;
3826 }
3827
3828 if (i >= sizeof(extras)/sizeof(uschar *))
3829 if (strncmpic(x, US"DNS", xlen) == 0)
3830 log_write(0, LOG_MAIN|LOG_PANIC, "\"timeout_dns\" is no longer "
3831 "available in retry rules (it has never worked) - treated as "
3832 "\"timeout\"");
3833 else
3834 return US"\"A\", \"MX\", or \"connect\" expected after \"timeout\"";
3835 }
3836 }
3837
3838 else if (strncmpic(pp, US"mail_4", 6) == 0 ||
3839 strncmpic(pp, US"rcpt_4", 6) == 0 ||
3840 strncmpic(pp, US"data_4", 6) == 0)
3841 {
3842 BOOL bad = FALSE;
3843 int x = 255; /* means "any 4xx code" */
3844 if (p != pp + 8) bad = TRUE; else
3845 {
3846 int a = pp[6], b = pp[7];
3847 if (isdigit(a))
3848 {
3849 x = (a - '0') * 10;
3850 if (isdigit(b)) x += b - '0';
3851 else if (b == 'x') x += 100;
3852 else bad = TRUE;
3853 }
3854 else if (a != 'x' || b != 'x') bad = TRUE;
3855 }
3856
3857 if (bad)
3858 return string_sprintf("%.4s_4 must be followed by xx, dx, or dd, where "
3859 "x is literal and d is any digit", pp);
3860
3861 *basic_errno = *pp == 'm' ? ERRNO_MAIL4XX :
3862 *pp == 'r' ? ERRNO_RCPT4XX : ERRNO_DATA4XX;
3863 *more_errno = x << 8;
3864 }
3865
3866 else if (len == 4 && strncmpic(pp, US"auth", len) == 0 &&
3867 strncmpic(q+1, US"failed", p-q-1) == 0)
3868 *basic_errno = ERRNO_AUTHFAIL;
3869
3870 else if (strncmpic(pp, US"lost_connection", p - pp) == 0)
3871 *basic_errno = ERRNO_SMTPCLOSED;
3872
3873 else if (strncmpic(pp, US"tls_required", p - pp) == 0)
3874 *basic_errno = ERRNO_TLSREQUIRED;
3875
3876 else if (strncmpic(pp, US"lookup", p - pp) == 0)
3877 *basic_errno = ERRNO_UNKNOWNHOST;
3878
3879 else if (len != 1 || Ustrncmp(pp, "*", 1) != 0)
3880 return string_sprintf("unknown or malformed retry error \"%.*s\"", (int) (p-pp), pp);
3881
3882 return NULL;
3883 }
3884
3885
3886
3887
3888 /*************************************************
3889 * Read retry information *
3890 *************************************************/
3891
3892 /* Each line of retry information contains:
3893
3894 . A domain name pattern or an address pattern;
3895
3896 . An error name, possibly with additional data, or *;
3897
3898 . An optional sequence of retry items, each consisting of an identifying
3899 letter, a cutoff time, and optional parameters.
3900
3901 All this is decoded and placed into a control block. */
3902
3903
3904 /* Subroutine to read an argument, preceded by a comma and terminated
3905 by comma, semicolon, whitespace, or newline. The types are: 0 = time value,
3906 1 = fixed point number (returned *1000).
3907
3908 Arguments:
3909 paddr pointer to pointer to current character; updated
3910 type 0 => read a time; 1 => read a fixed point number
3911
3912 Returns: time in seconds or fixed point number * 1000
3913 */
3914
3915 static int
3916 retry_arg(const uschar **paddr, int type)
3917 {
3918 const uschar *p = *paddr;
3919 const uschar *pp;
3920
3921 if (*p++ != ',') log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "comma expected");
3922
3923 while (isspace(*p)) p++;
3924 pp = p;
3925 while (isalnum(*p) || (type == 1 && *p == '.')) p++;
3926
3927 if (*p != 0 && !isspace(*p) && *p != ',' && *p != ';')
3928 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "comma or semicolon expected");
3929
3930 *paddr = p;
3931 switch (type)
3932 {
3933 case 0: return readconf_readtime(pp, *p, FALSE);
3934 case 1: return readconf_readfixed(pp, *p);
3935 }
3936 return 0; /* Keep picky compilers happy */
3937 }
3938
3939 /* The function proper */
3940
3941 void
3942 readconf_retries(void)
3943 {
3944 retry_config **chain = &retries;
3945 retry_config *next;
3946 const uschar *p;
3947
3948 while ((p = get_config_line()))
3949 {
3950 retry_rule **rchain;
3951 const uschar *pp;
3952 uschar *error;
3953
3954 next = store_get(sizeof(retry_config));
3955 next->next = NULL;
3956 *chain = next;
3957 chain = &(next->next);
3958 next->basic_errno = next->more_errno = 0;
3959 next->senders = NULL;
3960 next->rules = NULL;
3961 rchain = &(next->rules);
3962
3963 next->pattern = string_dequote(&p);
3964 while (isspace(*p)) p++;
3965 pp = p;
3966 while (mac_isgraph(*p)) p++;
3967 if (p - pp <= 0) log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
3968 "missing error type in retry rule");
3969
3970 /* Test error names for things we understand. */
3971
3972 if ((error = readconf_retry_error(pp, p, &next->basic_errno,
3973 &next->more_errno)))
3974 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "%s", error);
3975
3976 /* There may be an optional address list of senders to be used as another
3977 constraint on the rule. This was added later, so the syntax is a bit of a
3978 fudge. Anything that is not a retry rule starting "F," or "G," is treated as
3979 an address list. */
3980
3981 while (isspace(*p)) p++;
3982 if (Ustrncmp(p, "senders", 7) == 0)
3983 {
3984 p += 7;
3985 while (isspace(*p)) p++;
3986 if (*p++ != '=') log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
3987 "\"=\" expected after \"senders\" in retry rule");
3988 while (isspace(*p)) p++;
3989 next->senders = string_dequote(&p);
3990 }
3991
3992 /* Now the retry rules. Keep the maximum timeout encountered. */
3993
3994 while (isspace(*p)) p++;
3995
3996 while (*p != 0)
3997 {
3998 retry_rule *rule = store_get(sizeof(retry_rule));
3999 *rchain = rule;
4000 rchain = &(rule->next);
4001 rule->next = NULL;
4002 rule->rule = toupper(*p++);
4003 rule->timeout = retry_arg(&p, 0);
4004 if (rule->timeout > retry_maximum_timeout)
4005 retry_maximum_timeout = rule->timeout;
4006
4007 switch (rule->rule)
4008 {
4009 case 'F': /* Fixed interval */
4010 rule->p1 = retry_arg(&p, 0);
4011 break;
4012
4013 case 'G': /* Geometrically increasing intervals */
4014 case 'H': /* Ditto, but with randomness */
4015 rule->p1 = retry_arg(&p, 0);
4016 rule->p2 = retry_arg(&p, 1);
4017 break;
4018
4019 default:
4020 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "unknown retry rule letter");
4021 break;
4022 }
4023
4024 if (rule->timeout <= 0 || rule->p1 <= 0 ||
4025 (rule->rule != 'F' && rule->p2 < 1000))
4026 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
4027 "bad parameters for retry rule");
4028
4029 while (isspace(*p)) p++;
4030 if (*p == ';')
4031 {
4032 p++;
4033 while (isspace(*p)) p++;
4034 }
4035 else if (*p != 0)
4036 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "semicolon expected");
4037 }
4038 }
4039 }
4040
4041
4042
4043 /*************************************************
4044 * Initialize authenticators *
4045 *************************************************/
4046
4047 /* Read the authenticators section of the configuration file.
4048
4049 Arguments: none
4050 Returns: nothing
4051 */
4052
4053 static void
4054 auths_init(void)
4055 {
4056 auth_instance *au, *bu;
4057 readconf_driver_init(US"authenticator",
4058 (driver_instance **)(&auths), /* chain anchor */
4059 (driver_info *)auths_available, /* available drivers */
4060 sizeof(auth_info), /* size of info block */
4061 &auth_defaults, /* default values for generic options */
4062 sizeof(auth_instance), /* size of instance block */
4063 optionlist_auths, /* generic options */
4064 optionlist_auths_size);
4065
4066 for (au = auths; au; au = au->next)
4067 {
4068 if (!au->public_name)
4069 log_write(0, LOG_PANIC_DIE|LOG_CONFIG, "no public name specified for "
4070 "the %s authenticator", au->name);
4071
4072 for (bu = au->next; bu; bu = bu->next)
4073 if (strcmpic(au->public_name, bu->public_name) == 0)
4074 if ((au->client && bu->client) || (au->server && bu->server))
4075 log_write(0, LOG_PANIC_DIE|LOG_CONFIG, "two %s authenticators "
4076 "(%s and %s) have the same public name (%s)",
4077 au->client ? US"client" : US"server", au->name, bu->name,
4078 au->public_name);
4079 }
4080 }
4081
4082
4083
4084
4085 /*************************************************
4086 * Read ACL information *
4087 *************************************************/
4088
4089 /* If this run of Exim is not doing something that involves receiving a
4090 message, we can just skip over the ACL information. No need to parse it.
4091
4092 First, we have a function for acl_read() to call back to get the next line. We
4093 need to remember the line we passed, because at the end it will contain the
4094 name of the next ACL. */
4095
4096 static uschar *acl_line;
4097
4098 static uschar *
4099 acl_callback(void)
4100 {
4101 acl_line = get_config_line();
4102 return acl_line;
4103 }
4104
4105
4106 /* Now the main function:
4107
4108 Arguments: none
4109 Returns: nothing
4110 */
4111
4112 static void
4113 readconf_acl(void)
4114 {
4115 uschar *p;
4116
4117 /* Read each ACL and add it into the tree. Macro (re)definitions are allowed
4118 between ACLs. */
4119
4120 acl_line = get_config_line();
4121
4122 while(acl_line != NULL)
4123 {
4124 uschar name[64];
4125 tree_node *node;
4126 uschar *error;
4127
4128 p = readconf_readname(name, sizeof(name), acl_line);
4129 if (isupper(*name) && *p == '=')
4130 {
4131 read_macro_assignment(acl_line);
4132 acl_line = get_config_line();
4133 continue;
4134 }
4135
4136 if (*p != ':' || name[0] == 0)
4137 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "missing or malformed ACL name");
4138
4139 node = store_get(sizeof(tree_node) + Ustrlen(name));
4140 Ustrcpy(node->name, name);
4141 if (!tree_insertnode(&acl_anchor, node))
4142 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
4143 "there are two ACLs called \"%s\"", name);
4144
4145 node->data.ptr = acl_read(acl_callback, &error);
4146
4147 if (node->data.ptr == NULL && error != NULL)
4148 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "error in ACL: %s", error);
4149 }
4150 }
4151
4152
4153
4154 /*************************************************
4155 * Read configuration for local_scan() *
4156 *************************************************/
4157
4158 /* This function is called after "begin local_scan" is encountered in the
4159 configuration file. If the local_scan() function allows for configuration
4160 options, we can process them. Otherwise, we expire in a panic.
4161
4162 Arguments: none
4163 Returns: nothing
4164 */
4165
4166 static void
4167 local_scan_init(void)
4168 {
4169 #ifndef LOCAL_SCAN_HAS_OPTIONS
4170 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "local_scan() options not supported: "
4171 "(LOCAL_SCAN_HAS_OPTIONS not defined in Local/Makefile)");
4172 #else
4173
4174 uschar *p;
4175 while ((p = get_config_line()) != NULL)
4176 {
4177 (void) readconf_handle_option(p, local_scan_options, local_scan_options_count,
4178 NULL, US"local_scan option \"%s\" unknown");
4179 }
4180 #endif
4181 }
4182
4183
4184
4185 /*************************************************
4186 * Read rest of configuration (after main) *
4187 *************************************************/
4188
4189 /* This function reads the rest of the runtime configuration, after the main
4190 configuration. It is called only when actually needed. Each subsequent section
4191 of the configuration starts with a line of the form
4192
4193 begin name
4194
4195 where the name is "routers", "transports", etc. A section is terminated by
4196 hitting the next "begin" line, and the next name is left in next_section.
4197 Because it may confuse people as to whether the names are singular or plural,
4198 we add "s" if it's missing. There is always enough room in next_section for
4199 this. This function is basically just a switch.
4200
4201 Arguments: none
4202 Returns: nothing
4203 */
4204
4205 static uschar *section_list[] = {
4206 US"acls",
4207 US"authenticators",
4208 US"local_scans",
4209 US"retrys",
4210 US"rewrites",
4211 US"routers",
4212 US"transports"};
4213
4214 void
4215 readconf_rest(void)
4216 {
4217 int had = 0;
4218
4219 while(next_section[0] != 0)
4220 {
4221 int bit;
4222 int first = 0;
4223 int last = sizeof(section_list) / sizeof(uschar *);
4224 int mid = last/2;
4225 int n = Ustrlen(next_section);
4226
4227 if (tolower(next_section[n-1]) != 's') Ustrcpy(next_section+n, "s");
4228
4229 for (;;)
4230 {
4231 int c = strcmpic(next_section, section_list[mid]);
4232 if (c == 0) break;
4233 if (c > 0) first = mid + 1; else last = mid;
4234 if (first >= last)
4235 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
4236 "\"%.*s\" is not a known configuration section name", n, next_section);
4237 mid = (last + first)/2;
4238 }
4239
4240 bit = 1 << mid;
4241 if (((had ^= bit) & bit) == 0)
4242 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
4243 "\"%.*s\" section is repeated in the configuration file", n,
4244 next_section);
4245
4246 switch(mid)
4247 {
4248 case 0: readconf_acl(); break;
4249 case 1: auths_init(); break;
4250 case 2: local_scan_init(); break;
4251 case 3: readconf_retries(); break;
4252 case 4: readconf_rewrites(); break;
4253 case 5: route_init(); break;
4254 case 6: transport_init(); break;
4255 }
4256 }
4257
4258 (void)fclose(config_file);
4259 }
4260
4261 /* Init the storage for the pre-parsed config lines */
4262 void
4263 readconf_save_config(const uschar *s)
4264 {
4265 save_config_line(string_sprintf("# Exim Configuration (%s)",
4266 running_in_test_harness ? US"X" : s));
4267 }
4268
4269 static void
4270 save_config_position(const uschar *file, int line)
4271 {
4272 save_config_line(string_sprintf("# %d \"%s\"", line, file));
4273 }
4274
4275 /* Append a pre-parsed logical line to the config lines store,
4276 this operates on a global (static) list that holds all the pre-parsed
4277 config lines, we do no further processing here, output formatting and
4278 honouring of <hide> or macros will be done during output */
4279 static void
4280 save_config_line(const uschar* line)
4281 {
4282 static config_line_item *current;
4283 config_line_item *next;
4284
4285 next = (config_line_item*) store_get(sizeof(config_line_item));
4286 next->line = string_copy(line);
4287 next->next = NULL;
4288
4289 if (!config_lines) config_lines = next;
4290 else current->next = next;
4291
4292 current = next;
4293 }
4294
4295 /* List the parsed config lines, care about nice formatting and
4296 hide the <hide> values unless we're the admin user */
4297 void
4298 print_config(BOOL admin, BOOL terse)
4299 {
4300 config_line_item *i;
4301 const int TS = terse ? 0 : 2;
4302 int indent = 0;
4303
4304 for (i = config_lines; i; i = i->next)
4305 {
4306 uschar *current;
4307 uschar *p;
4308
4309 /* skip over to the first non-space */
4310 for (current = i->line; *current && isspace(*current); ++current)
4311 ;
4312
4313 if (*current == '\0')
4314 continue;
4315
4316 /* Collapse runs of spaces. We stop this if we encounter one of the
4317 * following characters: "'$, as this may indicate careful formatting */
4318 for (p = current; *p; ++p)
4319 {
4320 uschar *next;
4321 if (!isspace(*p)) continue;
4322 if (*p != ' ') *p = ' ';
4323
4324 for (next = p; isspace(*next); ++next)
4325 ;
4326
4327 if (next - p > 1)
4328 memmove(p+1, next, Ustrlen(next)+1);
4329
4330 if (*next == '"' || *next == '\'' || *next == '$')
4331 break;
4332 }
4333
4334 /* # lines */
4335 if (current[0] == '#')
4336 puts(CCS current);
4337
4338 /* begin lines are left aligned */
4339 else if (Ustrncmp(current, "begin", 5) == 0 && isspace(current[5]))
4340 {
4341 if (!terse) puts("");
4342 puts(CCS current);
4343 indent = TS;
4344 }
4345
4346 /* router/acl/transport block names */
4347 else if (current[Ustrlen(current)-1] == ':' && !Ustrchr(current, '='))
4348 {
4349 if (!terse) puts("");
4350 printf("%*s%s\n", TS, "", current);
4351 indent = 2 * TS;
4352 }
4353
4354 /* hidden lines (all MACROS or lines prefixed with "hide") */
4355 else if ( !admin
4356 && ( isupper(*current)
4357 || Ustrncmp(current, "hide", 4) == 0 && isspace(current[4])
4358 )
4359 )
4360 {
4361 if ((p = Ustrchr(current, '=')))
4362 {
4363 *p = '\0';
4364 printf("%*s%s= %s\n", indent, "", current, hidden);
4365 }
4366 /* e.g.: hide split_spool_directory */
4367 else
4368 printf("%*s\n", indent, hidden);
4369 }
4370
4371 else
4372 /* rest is public */
4373 printf("%*s%s\n", indent, "", current);
4374 }
4375 }
4376
4377 /* vi: aw ai sw=2
4378 */
4379 /* End of readconf.c */
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