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Update README.UPDATING; fix typos in ChangeLog/NewStuff
[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 static void readconf_options_auths(void);
21
22
23 #define CSTATE_STACK_SIZE 10
24
25
26 /* Structure for chain (stack) of .included files */
27
28 typedef struct config_file_item {
29 struct config_file_item *next;
30 uschar *filename;
31 FILE *file;
32 int lineno;
33 } config_file_item;
34
35 /* Structure for chain of configuration lines (-bP config) */
36
37 typedef struct config_line_item {
38 struct config_line_item *next;
39 uschar *line;
40 } config_line_item;
41
42 static config_line_item* config_lines;
43
44 /* Structure of table of conditional words and their state transitions */
45
46 typedef struct cond_item {
47 uschar *name;
48 int namelen;
49 int action1;
50 int action2;
51 int pushpop;
52 } cond_item;
53
54 /* Structure of table of syslog facility names and values */
55
56 typedef struct syslog_fac_item {
57 uschar *name;
58 int value;
59 } syslog_fac_item;
60
61 /* constants */
62 static const char * const hidden = "<value not displayable>";
63
64 /* Static variables */
65
66 static config_file_item *config_file_stack = NULL; /* For includes */
67
68 static uschar *syslog_facility_str = NULL;
69 static uschar next_section[24];
70 static uschar time_buffer[24];
71
72 /* State variables for conditional loading (.ifdef / .else / .endif) */
73
74 static int cstate = 0;
75 static int cstate_stack_ptr = -1;
76 static int cstate_stack[CSTATE_STACK_SIZE];
77
78 /* Table of state transitions for handling conditional inclusions. There are
79 four possible state transitions:
80
81 .ifdef true
82 .ifdef false
83 .elifdef true (or .else)
84 .elifdef false
85
86 .endif just causes the previous cstate to be popped off the stack */
87
88 static int next_cstate[3][4] =
89 {
90 /* State 0: reading from file, or reading until next .else or .endif */
91 { 0, 1, 2, 2 },
92 /* State 1: condition failed, skipping until next .else or .endif */
93 { 2, 2, 0, 1 },
94 /* State 2: skipping until .endif */
95 { 2, 2, 2, 2 },
96 };
97
98 /* Table of conditionals and the states to set. For each name, there are four
99 values: the length of the name (to save computing it each time), the state to
100 set if a macro was found in the line, the state to set if a macro was not found
101 in the line, and a stack manipulation setting which is:
102
103 -1 pull state value off the stack
104 0 don't alter the stack
105 +1 push value onto stack, before setting new state
106 */
107
108 static cond_item cond_list[] = {
109 { US"ifdef", 5, 0, 1, 1 },
110 { US"ifndef", 6, 1, 0, 1 },
111 { US"elifdef", 7, 2, 3, 0 },
112 { US"elifndef", 8, 3, 2, 0 },
113 { US"else", 4, 2, 2, 0 },
114 { US"endif", 5, 0, 0, -1 }
115 };
116
117 static int cond_list_size = sizeof(cond_list)/sizeof(cond_item);
118
119 /* Table of syslog facility names and their values */
120
121 static syslog_fac_item syslog_list[] = {
122 { US"mail", LOG_MAIL },
123 { US"user", LOG_USER },
124 { US"news", LOG_NEWS },
125 { US"uucp", LOG_UUCP },
126 { US"local0", LOG_LOCAL0 },
127 { US"local1", LOG_LOCAL1 },
128 { US"local2", LOG_LOCAL2 },
129 { US"local3", LOG_LOCAL3 },
130 { US"local4", LOG_LOCAL4 },
131 { US"local5", LOG_LOCAL5 },
132 { US"local6", LOG_LOCAL6 },
133 { US"local7", LOG_LOCAL7 },
134 { US"daemon", LOG_DAEMON }
135 };
136
137 static int syslog_list_size = sizeof(syslog_list)/sizeof(syslog_fac_item);
138
139
140
141
142 /*************************************************
143 * Main configuration options *
144 *************************************************/
145
146 /* The list of options that can be set in the main configuration file. This
147 must be in alphabetic order because it is searched by binary chop. */
148
149 static optionlist optionlist_config[] = {
150 { "*set_exim_group", opt_bool|opt_hidden, &exim_gid_set },
151 { "*set_exim_user", opt_bool|opt_hidden, &exim_uid_set },
152 { "*set_system_filter_group", opt_bool|opt_hidden, &system_filter_gid_set },
153 { "*set_system_filter_user", opt_bool|opt_hidden, &system_filter_uid_set },
154 { "accept_8bitmime", opt_bool, &accept_8bitmime },
155 { "acl_not_smtp", opt_stringptr, &acl_not_smtp },
156 #ifdef WITH_CONTENT_SCAN
157 { "acl_not_smtp_mime", opt_stringptr, &acl_not_smtp_mime },
158 #endif
159 { "acl_not_smtp_start", opt_stringptr, &acl_not_smtp_start },
160 { "acl_smtp_auth", opt_stringptr, &acl_smtp_auth },
161 { "acl_smtp_connect", opt_stringptr, &acl_smtp_connect },
162 { "acl_smtp_data", opt_stringptr, &acl_smtp_data },
163 #ifndef DISABLE_PRDR
164 { "acl_smtp_data_prdr", opt_stringptr, &acl_smtp_data_prdr },
165 #endif
166 #ifndef DISABLE_DKIM
167 { "acl_smtp_dkim", opt_stringptr, &acl_smtp_dkim },
168 #endif
169 { "acl_smtp_etrn", opt_stringptr, &acl_smtp_etrn },
170 { "acl_smtp_expn", opt_stringptr, &acl_smtp_expn },
171 { "acl_smtp_helo", opt_stringptr, &acl_smtp_helo },
172 { "acl_smtp_mail", opt_stringptr, &acl_smtp_mail },
173 { "acl_smtp_mailauth", opt_stringptr, &acl_smtp_mailauth },
174 #ifdef WITH_CONTENT_SCAN
175 { "acl_smtp_mime", opt_stringptr, &acl_smtp_mime },
176 #endif
177 { "acl_smtp_notquit", opt_stringptr, &acl_smtp_notquit },
178 { "acl_smtp_predata", opt_stringptr, &acl_smtp_predata },
179 { "acl_smtp_quit", opt_stringptr, &acl_smtp_quit },
180 { "acl_smtp_rcpt", opt_stringptr, &acl_smtp_rcpt },
181 #ifdef SUPPORT_TLS
182 { "acl_smtp_starttls", opt_stringptr, &acl_smtp_starttls },
183 #endif
184 { "acl_smtp_vrfy", opt_stringptr, &acl_smtp_vrfy },
185 { "add_environment", opt_stringptr, &add_environment },
186 { "admin_groups", opt_gidlist, &admin_groups },
187 { "allow_domain_literals", opt_bool, &allow_domain_literals },
188 { "allow_mx_to_ip", opt_bool, &allow_mx_to_ip },
189 { "allow_utf8_domains", opt_bool, &allow_utf8_domains },
190 { "auth_advertise_hosts", opt_stringptr, &auth_advertise_hosts },
191 { "auto_thaw", opt_time, &auto_thaw },
192 #ifdef WITH_CONTENT_SCAN
193 { "av_scanner", opt_stringptr, &av_scanner },
194 #endif
195 { "bi_command", opt_stringptr, &bi_command },
196 #ifdef EXPERIMENTAL_BRIGHTMAIL
197 { "bmi_config_file", opt_stringptr, &bmi_config_file },
198 #endif
199 { "bounce_message_file", opt_stringptr, &bounce_message_file },
200 { "bounce_message_text", opt_stringptr, &bounce_message_text },
201 { "bounce_return_body", opt_bool, &bounce_return_body },
202 { "bounce_return_linesize_limit", opt_mkint, &bounce_return_linesize_limit },
203 { "bounce_return_message", opt_bool, &bounce_return_message },
204 { "bounce_return_size_limit", opt_mkint, &bounce_return_size_limit },
205 { "bounce_sender_authentication",opt_stringptr,&bounce_sender_authentication },
206 { "callout_domain_negative_expire", opt_time, &callout_cache_domain_negative_expire },
207 { "callout_domain_positive_expire", opt_time, &callout_cache_domain_positive_expire },
208 { "callout_negative_expire", opt_time, &callout_cache_negative_expire },
209 { "callout_positive_expire", opt_time, &callout_cache_positive_expire },
210 { "callout_random_local_part",opt_stringptr, &callout_random_local_part },
211 { "check_log_inodes", opt_int, &check_log_inodes },
212 { "check_log_space", opt_Kint, &check_log_space },
213 { "check_rfc2047_length", opt_bool, &check_rfc2047_length },
214 { "check_spool_inodes", opt_int, &check_spool_inodes },
215 { "check_spool_space", opt_Kint, &check_spool_space },
216 { "chunking_advertise_hosts", opt_stringptr, &chunking_advertise_hosts },
217 { "daemon_smtp_port", opt_stringptr|opt_hidden, &daemon_smtp_port },
218 { "daemon_smtp_ports", opt_stringptr, &daemon_smtp_port },
219 { "daemon_startup_retries", opt_int, &daemon_startup_retries },
220 { "daemon_startup_sleep", opt_time, &daemon_startup_sleep },
221 #ifdef EXPERIMENTAL_DCC
222 { "dcc_direct_add_header", opt_bool, &dcc_direct_add_header },
223 { "dccifd_address", opt_stringptr, &dccifd_address },
224 { "dccifd_options", opt_stringptr, &dccifd_options },
225 #endif
226 { "delay_warning", opt_timelist, &delay_warning },
227 { "delay_warning_condition", opt_stringptr, &delay_warning_condition },
228 { "deliver_drop_privilege", opt_bool, &deliver_drop_privilege },
229 { "deliver_queue_load_max", opt_fixed, &deliver_queue_load_max },
230 { "delivery_date_remove", opt_bool, &delivery_date_remove },
231 #ifdef ENABLE_DISABLE_FSYNC
232 { "disable_fsync", opt_bool, &disable_fsync },
233 #endif
234 { "disable_ipv6", opt_bool, &disable_ipv6 },
235 #ifndef DISABLE_DKIM
236 { "dkim_verify_signers", opt_stringptr, &dkim_verify_signers },
237 #endif
238 #ifdef EXPERIMENTAL_DMARC
239 { "dmarc_forensic_sender", opt_stringptr, &dmarc_forensic_sender },
240 { "dmarc_history_file", opt_stringptr, &dmarc_history_file },
241 { "dmarc_tld_file", opt_stringptr, &dmarc_tld_file },
242 #endif
243 { "dns_again_means_nonexist", opt_stringptr, &dns_again_means_nonexist },
244 { "dns_check_names_pattern", opt_stringptr, &check_dns_names_pattern },
245 { "dns_csa_search_limit", opt_int, &dns_csa_search_limit },
246 { "dns_csa_use_reverse", opt_bool, &dns_csa_use_reverse },
247 { "dns_dnssec_ok", opt_int, &dns_dnssec_ok },
248 { "dns_ipv4_lookup", opt_stringptr, &dns_ipv4_lookup },
249 { "dns_retrans", opt_time, &dns_retrans },
250 { "dns_retry", opt_int, &dns_retry },
251 { "dns_trust_aa", opt_stringptr, &dns_trust_aa },
252 { "dns_use_edns0", opt_int, &dns_use_edns0 },
253 /* This option is now a no-op, retained for compability */
254 { "drop_cr", opt_bool, &drop_cr },
255 /*********************************************************/
256 { "dsn_advertise_hosts", opt_stringptr, &dsn_advertise_hosts },
257 { "dsn_from", opt_stringptr, &dsn_from },
258 { "envelope_to_remove", opt_bool, &envelope_to_remove },
259 { "errors_copy", opt_stringptr, &errors_copy },
260 { "errors_reply_to", opt_stringptr, &errors_reply_to },
261 #ifndef DISABLE_EVENT
262 { "event_action", opt_stringptr, &event_action },
263 #endif
264 { "exim_group", opt_gid, &exim_gid },
265 { "exim_path", opt_stringptr, &exim_path },
266 { "exim_user", opt_uid, &exim_uid },
267 { "extra_local_interfaces", opt_stringptr, &extra_local_interfaces },
268 { "extract_addresses_remove_arguments", opt_bool, &extract_addresses_remove_arguments },
269 { "finduser_retries", opt_int, &finduser_retries },
270 { "freeze_tell", opt_stringptr, &freeze_tell },
271 { "gecos_name", opt_stringptr, &gecos_name },
272 { "gecos_pattern", opt_stringptr, &gecos_pattern },
273 #ifdef SUPPORT_TLS
274 { "gnutls_allow_auto_pkcs11", opt_bool, &gnutls_allow_auto_pkcs11 },
275 { "gnutls_compat_mode", opt_bool, &gnutls_compat_mode },
276 #endif
277 { "header_line_maxsize", opt_int, &header_line_maxsize },
278 { "header_maxsize", opt_int, &header_maxsize },
279 { "headers_charset", opt_stringptr, &headers_charset },
280 { "helo_accept_junk_hosts", opt_stringptr, &helo_accept_junk_hosts },
281 { "helo_allow_chars", opt_stringptr, &helo_allow_chars },
282 { "helo_lookup_domains", opt_stringptr, &helo_lookup_domains },
283 { "helo_try_verify_hosts", opt_stringptr, &helo_try_verify_hosts },
284 { "helo_verify_hosts", opt_stringptr, &helo_verify_hosts },
285 { "hold_domains", opt_stringptr, &hold_domains },
286 { "host_lookup", opt_stringptr, &host_lookup },
287 { "host_lookup_order", opt_stringptr, &host_lookup_order },
288 { "host_reject_connection", opt_stringptr, &host_reject_connection },
289 { "hosts_connection_nolog", opt_stringptr, &hosts_connection_nolog },
290 #ifdef SUPPORT_PROXY
291 { "hosts_proxy", opt_stringptr, &hosts_proxy },
292 #endif
293 { "hosts_treat_as_local", opt_stringptr, &hosts_treat_as_local },
294 #ifdef LOOKUP_IBASE
295 { "ibase_servers", opt_stringptr, &ibase_servers },
296 #endif
297 { "ignore_bounce_errors_after", opt_time, &ignore_bounce_errors_after },
298 { "ignore_fromline_hosts", opt_stringptr, &ignore_fromline_hosts },
299 { "ignore_fromline_local", opt_bool, &ignore_fromline_local },
300 { "keep_environment", opt_stringptr, &keep_environment },
301 { "keep_malformed", opt_time, &keep_malformed },
302 #ifdef LOOKUP_LDAP
303 { "ldap_ca_cert_dir", opt_stringptr, &eldap_ca_cert_dir },
304 { "ldap_ca_cert_file", opt_stringptr, &eldap_ca_cert_file },
305 { "ldap_cert_file", opt_stringptr, &eldap_cert_file },
306 { "ldap_cert_key", opt_stringptr, &eldap_cert_key },
307 { "ldap_cipher_suite", opt_stringptr, &eldap_cipher_suite },
308 { "ldap_default_servers", opt_stringptr, &eldap_default_servers },
309 { "ldap_require_cert", opt_stringptr, &eldap_require_cert },
310 { "ldap_start_tls", opt_bool, &eldap_start_tls },
311 { "ldap_version", opt_int, &eldap_version },
312 #endif
313 { "local_from_check", opt_bool, &local_from_check },
314 { "local_from_prefix", opt_stringptr, &local_from_prefix },
315 { "local_from_suffix", opt_stringptr, &local_from_suffix },
316 { "local_interfaces", opt_stringptr, &local_interfaces },
317 { "local_scan_timeout", opt_time, &local_scan_timeout },
318 { "local_sender_retain", opt_bool, &local_sender_retain },
319 { "localhost_number", opt_stringptr, &host_number_string },
320 { "log_file_path", opt_stringptr, &log_file_path },
321 { "log_selector", opt_stringptr, &log_selector_string },
322 { "log_timezone", opt_bool, &log_timezone },
323 { "lookup_open_max", opt_int, &lookup_open_max },
324 { "max_username_length", opt_int, &max_username_length },
325 { "message_body_newlines", opt_bool, &message_body_newlines },
326 { "message_body_visible", opt_mkint, &message_body_visible },
327 { "message_id_header_domain", opt_stringptr, &message_id_domain },
328 { "message_id_header_text", opt_stringptr, &message_id_text },
329 { "message_logs", opt_bool, &message_logs },
330 { "message_size_limit", opt_stringptr, &message_size_limit },
331 #ifdef SUPPORT_MOVE_FROZEN_MESSAGES
332 { "move_frozen_messages", opt_bool, &move_frozen_messages },
333 #endif
334 { "mua_wrapper", opt_bool, &mua_wrapper },
335 #ifdef LOOKUP_MYSQL
336 { "mysql_servers", opt_stringptr, &mysql_servers },
337 #endif
338 { "never_users", opt_uidlist, &never_users },
339 #ifdef SUPPORT_TLS
340 { "openssl_options", opt_stringptr, &openssl_options },
341 #endif
342 #ifdef LOOKUP_ORACLE
343 { "oracle_servers", opt_stringptr, &oracle_servers },
344 #endif
345 { "percent_hack_domains", opt_stringptr, &percent_hack_domains },
346 #ifdef EXIM_PERL
347 { "perl_at_start", opt_bool, &opt_perl_at_start },
348 { "perl_startup", opt_stringptr, &opt_perl_startup },
349 { "perl_taintmode", opt_bool, &opt_perl_taintmode },
350 #endif
351 #ifdef LOOKUP_PGSQL
352 { "pgsql_servers", opt_stringptr, &pgsql_servers },
353 #endif
354 { "pid_file_path", opt_stringptr, &pid_file_path },
355 { "pipelining_advertise_hosts", opt_stringptr, &pipelining_advertise_hosts },
356 #ifndef DISABLE_PRDR
357 { "prdr_enable", opt_bool, &prdr_enable },
358 #endif
359 { "preserve_message_logs", opt_bool, &preserve_message_logs },
360 { "primary_hostname", opt_stringptr, &primary_hostname },
361 { "print_topbitchars", opt_bool, &print_topbitchars },
362 { "process_log_path", opt_stringptr, &process_log_path },
363 { "prod_requires_admin", opt_bool, &prod_requires_admin },
364 { "qualify_domain", opt_stringptr, &qualify_domain_sender },
365 { "qualify_recipient", opt_stringptr, &qualify_domain_recipient },
366 { "queue_domains", opt_stringptr, &queue_domains },
367 { "queue_list_requires_admin",opt_bool, &queue_list_requires_admin },
368 { "queue_only", opt_bool, &queue_only },
369 { "queue_only_file", opt_stringptr, &queue_only_file },
370 { "queue_only_load", opt_fixed, &queue_only_load },
371 { "queue_only_load_latch", opt_bool, &queue_only_load_latch },
372 { "queue_only_override", opt_bool, &queue_only_override },
373 { "queue_run_in_order", opt_bool, &queue_run_in_order },
374 { "queue_run_max", opt_stringptr, &queue_run_max },
375 { "queue_smtp_domains", opt_stringptr, &queue_smtp_domains },
376 { "receive_timeout", opt_time, &receive_timeout },
377 { "received_header_text", opt_stringptr, &received_header_text },
378 { "received_headers_max", opt_int, &received_headers_max },
379 { "recipient_unqualified_hosts", opt_stringptr, &recipient_unqualified_hosts },
380 { "recipients_max", opt_int, &recipients_max },
381 { "recipients_max_reject", opt_bool, &recipients_max_reject },
382 #ifdef LOOKUP_REDIS
383 { "redis_servers", opt_stringptr, &redis_servers },
384 #endif
385 { "remote_max_parallel", opt_int, &remote_max_parallel },
386 { "remote_sort_domains", opt_stringptr, &remote_sort_domains },
387 { "retry_data_expire", opt_time, &retry_data_expire },
388 { "retry_interval_max", opt_time, &retry_interval_max },
389 { "return_path_remove", opt_bool, &return_path_remove },
390 { "return_size_limit", opt_mkint|opt_hidden, &bounce_return_size_limit },
391 { "rfc1413_hosts", opt_stringptr, &rfc1413_hosts },
392 { "rfc1413_query_timeout", opt_time, &rfc1413_query_timeout },
393 { "sender_unqualified_hosts", opt_stringptr, &sender_unqualified_hosts },
394 { "slow_lookup_log", opt_int, &slow_lookup_log },
395 { "smtp_accept_keepalive", opt_bool, &smtp_accept_keepalive },
396 { "smtp_accept_max", opt_int, &smtp_accept_max },
397 { "smtp_accept_max_nonmail", opt_int, &smtp_accept_max_nonmail },
398 { "smtp_accept_max_nonmail_hosts", opt_stringptr, &smtp_accept_max_nonmail_hosts },
399 { "smtp_accept_max_per_connection", opt_int, &smtp_accept_max_per_connection },
400 { "smtp_accept_max_per_host", opt_stringptr, &smtp_accept_max_per_host },
401 { "smtp_accept_queue", opt_int, &smtp_accept_queue },
402 { "smtp_accept_queue_per_connection", opt_int, &smtp_accept_queue_per_connection },
403 { "smtp_accept_reserve", opt_int, &smtp_accept_reserve },
404 { "smtp_active_hostname", opt_stringptr, &raw_active_hostname },
405 { "smtp_banner", opt_stringptr, &smtp_banner },
406 { "smtp_check_spool_space", opt_bool, &smtp_check_spool_space },
407 { "smtp_connect_backlog", opt_int, &smtp_connect_backlog },
408 { "smtp_enforce_sync", opt_bool, &smtp_enforce_sync },
409 { "smtp_etrn_command", opt_stringptr, &smtp_etrn_command },
410 { "smtp_etrn_serialize", opt_bool, &smtp_etrn_serialize },
411 { "smtp_load_reserve", opt_fixed, &smtp_load_reserve },
412 { "smtp_max_synprot_errors", opt_int, &smtp_max_synprot_errors },
413 { "smtp_max_unknown_commands",opt_int, &smtp_max_unknown_commands },
414 { "smtp_ratelimit_hosts", opt_stringptr, &smtp_ratelimit_hosts },
415 { "smtp_ratelimit_mail", opt_stringptr, &smtp_ratelimit_mail },
416 { "smtp_ratelimit_rcpt", opt_stringptr, &smtp_ratelimit_rcpt },
417 { "smtp_receive_timeout", opt_func, &fn_smtp_receive_timeout },
418 { "smtp_reserve_hosts", opt_stringptr, &smtp_reserve_hosts },
419 { "smtp_return_error_details",opt_bool, &smtp_return_error_details },
420 #ifdef SUPPORT_I18N
421 { "smtputf8_advertise_hosts", opt_stringptr, &smtputf8_advertise_hosts },
422 #endif
423 #ifdef WITH_CONTENT_SCAN
424 { "spamd_address", opt_stringptr, &spamd_address },
425 #endif
426 #ifdef EXPERIMENTAL_SPF
427 { "spf_guess", opt_stringptr, &spf_guess },
428 #endif
429 { "split_spool_directory", opt_bool, &split_spool_directory },
430 { "spool_directory", opt_stringptr, &spool_directory },
431 #ifdef LOOKUP_SQLITE
432 { "sqlite_lock_timeout", opt_int, &sqlite_lock_timeout },
433 #endif
434 #ifdef EXPERIMENTAL_SRS
435 { "srs_config", opt_stringptr, &srs_config },
436 { "srs_hashlength", opt_int, &srs_hashlength },
437 { "srs_hashmin", opt_int, &srs_hashmin },
438 { "srs_maxage", opt_int, &srs_maxage },
439 { "srs_secrets", opt_stringptr, &srs_secrets },
440 { "srs_usehash", opt_bool, &srs_usehash },
441 { "srs_usetimestamp", opt_bool, &srs_usetimestamp },
442 #endif
443 { "strict_acl_vars", opt_bool, &strict_acl_vars },
444 { "strip_excess_angle_brackets", opt_bool, &strip_excess_angle_brackets },
445 { "strip_trailing_dot", opt_bool, &strip_trailing_dot },
446 { "syslog_duplication", opt_bool, &syslog_duplication },
447 { "syslog_facility", opt_stringptr, &syslog_facility_str },
448 { "syslog_processname", opt_stringptr, &syslog_processname },
449 { "syslog_timestamp", opt_bool, &syslog_timestamp },
450 { "system_filter", opt_stringptr, &system_filter },
451 { "system_filter_directory_transport", opt_stringptr,&system_filter_directory_transport },
452 { "system_filter_file_transport",opt_stringptr,&system_filter_file_transport },
453 { "system_filter_group", opt_gid, &system_filter_gid },
454 { "system_filter_pipe_transport",opt_stringptr,&system_filter_pipe_transport },
455 { "system_filter_reply_transport",opt_stringptr,&system_filter_reply_transport },
456 { "system_filter_user", opt_uid, &system_filter_uid },
457 { "tcp_nodelay", opt_bool, &tcp_nodelay },
458 #ifdef USE_TCP_WRAPPERS
459 { "tcp_wrappers_daemon_name", opt_stringptr, &tcp_wrappers_daemon_name },
460 #endif
461 { "timeout_frozen_after", opt_time, &timeout_frozen_after },
462 { "timezone", opt_stringptr, &timezone_string },
463 { "tls_advertise_hosts", opt_stringptr, &tls_advertise_hosts },
464 #ifdef SUPPORT_TLS
465 { "tls_certificate", opt_stringptr, &tls_certificate },
466 { "tls_crl", opt_stringptr, &tls_crl },
467 { "tls_dh_max_bits", opt_int, &tls_dh_max_bits },
468 { "tls_dhparam", opt_stringptr, &tls_dhparam },
469 { "tls_eccurve", opt_stringptr, &tls_eccurve },
470 # ifndef DISABLE_OCSP
471 { "tls_ocsp_file", opt_stringptr, &tls_ocsp_file },
472 # endif
473 { "tls_on_connect_ports", opt_stringptr, &tls_in.on_connect_ports },
474 { "tls_privatekey", opt_stringptr, &tls_privatekey },
475 { "tls_remember_esmtp", opt_bool, &tls_remember_esmtp },
476 { "tls_require_ciphers", opt_stringptr, &tls_require_ciphers },
477 { "tls_try_verify_hosts", opt_stringptr, &tls_try_verify_hosts },
478 { "tls_verify_certificates", opt_stringptr, &tls_verify_certificates },
479 { "tls_verify_hosts", opt_stringptr, &tls_verify_hosts },
480 #endif
481 { "trusted_groups", opt_gidlist, &trusted_groups },
482 { "trusted_users", opt_uidlist, &trusted_users },
483 { "unknown_login", opt_stringptr, &unknown_login },
484 { "unknown_username", opt_stringptr, &unknown_username },
485 { "untrusted_set_sender", opt_stringptr, &untrusted_set_sender },
486 { "uucp_from_pattern", opt_stringptr, &uucp_from_pattern },
487 { "uucp_from_sender", opt_stringptr, &uucp_from_sender },
488 { "warn_message_file", opt_stringptr, &warn_message_file },
489 { "write_rejectlog", opt_bool, &write_rejectlog }
490 };
491
492 static int optionlist_config_size = nelem(optionlist_config);
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 < nelem(optionlist_config); i++)
518 if (p == optionlist_config[i].value) return US optionlist_config[i].name;
519
520 for (r = routers; r; 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; 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 /* We have a new definition. The macro_item structure includes a final vector
558 called "name" which is one byte long. Thus, adding "namelen" gives us enough
559 room to store the "name" string.
560 If a builtin macro we place at head of list, else tail. This lets us lazy-create
561 builtins. */
562
563 macro_item *
564 macro_create(const uschar * name, const uschar * val,
565 BOOL command_line, BOOL builtin)
566 {
567 unsigned namelen = Ustrlen(name);
568 macro_item * m = store_get(sizeof(macro_item) + namelen);
569
570 if (!macros)
571 {
572 macros = m;
573 mlast = m;
574 m->next = NULL;
575 }
576 else if (builtin)
577 {
578 m->next = macros;
579 macros = m;
580 }
581 else
582 {
583 mlast->next = m;
584 mlast = m;
585 m->next = NULL;
586 }
587 m->command_line = command_line;
588 m->namelen = namelen;
589 m->replacement = string_copy(val);
590 Ustrcpy(m->name, name);
591 return m;
592 }
593
594
595 /* This function is called when a line that starts with an upper case letter is
596 encountered. The argument "line" should contain a complete logical line, and
597 start with the first letter of the macro name. The macro name and the
598 replacement text are extracted and stored. Redefinition of existing,
599 non-command line, macros is permitted using '==' instead of '='.
600
601 Arguments:
602 s points to the start of the logical line
603
604 Returns: nothing
605 */
606
607 static void
608 read_macro_assignment(uschar *s)
609 {
610 uschar name[64];
611 int namelen = 0;
612 BOOL redef = FALSE;
613 macro_item *m;
614
615 while (isalnum(*s) || *s == '_')
616 {
617 if (namelen >= sizeof(name) - 1)
618 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
619 "macro name too long (maximum is " SIZE_T_FMT " characters)", sizeof(name) - 1);
620 name[namelen++] = *s++;
621 }
622 name[namelen] = 0;
623
624 while (isspace(*s)) s++;
625 if (*s++ != '=')
626 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "malformed macro definition");
627
628 if (*s == '=')
629 {
630 redef = TRUE;
631 s++;
632 }
633 while (isspace(*s)) s++;
634
635 /* If an existing macro of the same name was defined on the command line, we
636 just skip this definition. It's an error to attempt to redefine a macro without
637 redef set to TRUE, or to redefine a macro when it hasn't been defined earlier.
638 It is also an error to define a macro whose name begins with the name of a
639 previously defined macro. This is the requirement that make using a tree
640 for macros hard; we must check all macros for the substring. Perhaps a
641 sorted list, and a bsearch, would work?
642 Note: it is documented that the other way round works. */
643
644 for (m = macros; m; m = m->next)
645 {
646 if (Ustrcmp(m->name, name) == 0)
647 {
648 if (!m->command_line && !redef)
649 log_write(0, LOG_CONFIG|LOG_PANIC_DIE, "macro \"%s\" is already "
650 "defined (use \"==\" if you want to redefine it", name);
651 break;
652 }
653
654 if (m->namelen < namelen && Ustrstr(name, m->name) != NULL)
655 log_write(0, LOG_CONFIG|LOG_PANIC_DIE, "\"%s\" cannot be defined as "
656 "a macro because previously defined macro \"%s\" is a substring",
657 name, m->name);
658
659 /* We cannot have this test, because it is documented that a substring
660 macro is permitted (there is even an example).
661 *
662 * if (m->namelen > namelen && Ustrstr(m->name, name) != NULL)
663 * log_write(0, LOG_CONFIG|LOG_PANIC_DIE, "\"%s\" cannot be defined as "
664 * "a macro because it is a substring of previously defined macro \"%s\"",
665 * name, m->name);
666 */
667 }
668
669 /* Check for an overriding command-line definition. */
670
671 if (m && m->command_line) return;
672
673 /* Redefinition must refer to an existing macro. */
674
675 if (redef)
676 if (m)
677 m->replacement = string_copy(s);
678 else
679 log_write(0, LOG_CONFIG|LOG_PANIC_DIE, "can't redefine an undefined macro "
680 "\"%s\"", name);
681
682 /* We have a new definition. */
683 else
684 (void) macro_create(name, s, FALSE, FALSE);
685 }
686
687
688
689
690
691 /*************************************************/
692 /* Create compile-time feature macros */
693 static void
694 readconf_features(void)
695 {
696 /* Probably we could work out a static initialiser for wherever
697 macros are stored, but this will do for now. Some names are awkward
698 due to conflicts with other common macros. */
699
700 #ifdef SUPPORT_CRYPTEQ
701 macro_create(US"_HAVE_CRYPTEQ", US"y", FALSE, TRUE);
702 #endif
703 #if HAVE_ICONV
704 macro_create(US"_HAVE_ICONV", US"y", FALSE, TRUE);
705 #endif
706 #if HAVE_IPV6
707 macro_create(US"_HAVE_IPV6", US"y", FALSE, TRUE);
708 #endif
709 #ifdef HAVE_SETCLASSRESOURCES
710 macro_create(US"_HAVE_SETCLASSRESOURCES", US"y", FALSE, TRUE);
711 #endif
712 #ifdef SUPPORT_PAM
713 macro_create(US"_HAVE_PAM", US"y", FALSE, TRUE);
714 #endif
715 #ifdef EXIM_PERL
716 macro_create(US"_HAVE_PERL", US"y", FALSE, TRUE);
717 #endif
718 #ifdef EXPAND_DLFUNC
719 macro_create(US"_HAVE_DLFUNC", US"y", FALSE, TRUE);
720 #endif
721 #ifdef USE_TCP_WRAPPERS
722 macro_create(US"_HAVE_TCPWRAPPERS", US"y", FALSE, TRUE);
723 #endif
724 #ifdef SUPPORT_TLS
725 macro_create(US"_HAVE_TLS", US"y", FALSE, TRUE);
726 # ifdef USE_GNUTLS
727 macro_create(US"_HAVE_GNUTLS", US"y", FALSE, TRUE);
728 # else
729 macro_create(US"_HAVE_OPENSSL", US"y", FALSE, TRUE);
730 # endif
731 #endif
732 #ifdef SUPPORT_TRANSLATE_IP_ADDRESS
733 macro_create(US"_HAVE_TRANSLATE_IP_ADDRESS", US"y", FALSE, TRUE);
734 #endif
735 #ifdef SUPPORT_MOVE_FROZEN_MESSAGES
736 macro_create(US"_HAVE_MOVE_FROZEN_MESSAGES", US"y", FALSE, TRUE);
737 #endif
738 #ifdef WITH_CONTENT_SCAN
739 macro_create(US"_HAVE_CONTENT_SCANNING", US"y", FALSE, TRUE);
740 #endif
741 #ifndef DISABLE_DKIM
742 macro_create(US"_HAVE_DKIM", US"y", FALSE, TRUE);
743 #endif
744 #ifndef DISABLE_DNSSEC
745 macro_create(US"_HAVE_DNSSEC", US"y", FALSE, TRUE);
746 #endif
747 #ifndef DISABLE_EVENT
748 macro_create(US"_HAVE_EVENT", US"y", FALSE, TRUE);
749 #endif
750 #ifdef SUPPORT_I18N
751 macro_create(US"_HAVE_I18N", US"y", FALSE, TRUE);
752 #endif
753 #ifndef DISABLE_OCSP
754 macro_create(US"_HAVE_OCSP", US"y", FALSE, TRUE);
755 #endif
756 #ifndef DISABLE_PRDR
757 macro_create(US"_HAVE_PRDR", US"y", FALSE, TRUE);
758 #endif
759 #ifdef SUPPORT_PROXY
760 macro_create(US"_HAVE_PROXY", US"y", FALSE, TRUE);
761 #endif
762 #ifdef SUPPORT_SOCKS
763 macro_create(US"_HAVE_SOCKS", US"y", FALSE, TRUE);
764 #endif
765 #ifdef TCP_FASTOPEN
766 macro_create(US"_HAVE_TCP_FASTOPEN", US"y", FALSE, TRUE);
767 #endif
768 #ifdef EXPERIMENTAL_LMDB
769 macro_create(US"_HAVE_LMDB", US"y", FALSE, TRUE);
770 #endif
771 #ifdef EXPERIMENTAL_SPF
772 macro_create(US"_HAVE_SPF", US"y", FALSE, TRUE);
773 #endif
774 #ifdef EXPERIMENTAL_SRS
775 macro_create(US"_HAVE_SRS", US"y", FALSE, TRUE);
776 #endif
777 #ifdef EXPERIMENTAL_BRIGHTMAIL
778 macro_create(US"_HAVE_BRIGHTMAIL", US"y", FALSE, TRUE);
779 #endif
780 #ifdef EXPERIMENTAL_DANE
781 macro_create(US"_HAVE_DANE", US"y", FALSE, TRUE);
782 #endif
783 #ifdef EXPERIMENTAL_DCC
784 macro_create(US"_HAVE_DCC", US"y", FALSE, TRUE);
785 #endif
786 #ifdef EXPERIMENTAL_DMARC
787 macro_create(US"_HAVE_DMARC", US"y", FALSE, TRUE);
788 #endif
789 #ifdef EXPERIMENTAL_DSN_INFO
790 macro_create(US"_HAVE_DSN_INFO", US"y", FALSE, TRUE);
791 #endif
792
793 #ifdef LOOKUP_LSEARCH
794 macro_create(US"_HAVE_LKUP_LSEARCH", US"y", FALSE, TRUE);
795 #endif
796 #ifdef LOOKUP_CDB
797 macro_create(US"_HAVE_LKUP_CDB", US"y", FALSE, TRUE);
798 #endif
799 #ifdef LOOKUP_DBM
800 macro_create(US"_HAVE_LKUP_DBM", US"y", FALSE, TRUE);
801 #endif
802 #ifdef LOOKUP_DNSDB
803 macro_create(US"_HAVE_LKUP_DNSDB", US"y", FALSE, TRUE);
804 #endif
805 #ifdef LOOKUP_DSEARCH
806 macro_create(US"_HAVE_LKUP_DSEARCH", US"y", FALSE, TRUE);
807 #endif
808 #ifdef LOOKUP_IBASE
809 macro_create(US"_HAVE_LKUP_IBASE", US"y", FALSE, TRUE);
810 #endif
811 #ifdef LOOKUP_LDAP
812 macro_create(US"_HAVE_LKUP_LDAP", US"y", FALSE, TRUE);
813 #endif
814 #ifdef EXPERIMENTAL_LMDB
815 macro_create(US"_HAVE_LKUP_LMDB", US"y", FALSE, TRUE);
816 #endif
817 #ifdef LOOKUP_MYSQL
818 macro_create(US"_HAVE_LKUP_MYSQL", US"y", FALSE, TRUE);
819 #endif
820 #ifdef LOOKUP_NIS
821 macro_create(US"_HAVE_LKUP_NIS", US"y", FALSE, TRUE);
822 #endif
823 #ifdef LOOKUP_NISPLUS
824 macro_create(US"_HAVE_LKUP_NISPLUS", US"y", FALSE, TRUE);
825 #endif
826 #ifdef LOOKUP_ORACLE
827 macro_create(US"_HAVE_LKUP_ORACLE", US"y", FALSE, TRUE);
828 #endif
829 #ifdef LOOKUP_PASSWD
830 macro_create(US"_HAVE_LKUP_PASSWD", US"y", FALSE, TRUE);
831 #endif
832 #ifdef LOOKUP_PGSQL
833 macro_create(US"_HAVE_LKUP_PGSQL", US"y", FALSE, TRUE);
834 #endif
835 #ifdef LOOKUP_REDIS
836 macro_create(US"_HAVE_LKUP_REDIS", US"y", FALSE, TRUE);
837 #endif
838 #ifdef LOOKUP_SQLITE
839 macro_create(US"_HAVE_LKUP_SQLITE", US"y", FALSE, TRUE);
840 #endif
841 #ifdef LOOKUP_TESTDB
842 macro_create(US"_HAVE_LKUP_TESTDB", US"y", FALSE, TRUE);
843 #endif
844 #ifdef LOOKUP_WHOSON
845 macro_create(US"_HAVE_LKUP_WHOSON", US"y", FALSE, TRUE);
846 #endif
847
848 #ifdef TRANSPORT_APPENDFILE
849 # ifdef SUPPORT_MAILDIR
850 macro_create(US"_HAVE_TPT_APPEND_MAILDR", US"y", FALSE, TRUE);
851 # endif
852 # ifdef SUPPORT_MAILSTORE
853 macro_create(US"_HAVE_TPT_APPEND_MAILSTORE", US"y", FALSE, TRUE);
854 # endif
855 # ifdef SUPPORT_MBX
856 macro_create(US"_HAVE_TPT_APPEND_MBX", US"y", FALSE, TRUE);
857 # endif
858 #endif
859 }
860
861
862 void
863 readconf_options_from_list(optionlist * opts, unsigned nopt, uschar * group)
864 {
865 int i;
866 const uschar * s;
867
868 /* Walk the array backwards to get substring-conflict names */
869 for (i = nopt-1; i >= 0; i--) if (*(s = opts[i].name) && *s != '*')
870 macro_create(string_sprintf("_OPT_%T_%T", group, s), US"y", FALSE, TRUE);
871 }
872
873
874 static void
875 readconf_options(void)
876 {
877 readconf_options_from_list(optionlist_config, nelem(optionlist_config), US"MAIN");
878 readconf_options_routers();
879 readconf_options_transports();
880 readconf_options_auths();
881 }
882
883 static void
884 macros_create_builtin(void)
885 {
886 readconf_features();
887 readconf_options();
888 macros_builtin_created = TRUE;
889 }
890
891
892 /*************************************************
893 * Read configuration line *
894 *************************************************/
895
896 /* A logical line of text is read from the configuration file into the big
897 buffer, taking account of macros, .includes, and continuations. The size of
898 big_buffer is increased if necessary. The count of configuration lines is
899 maintained. Physical input lines starting with # (ignoring leading white space,
900 and after macro replacement) and empty logical lines are always ignored.
901 Leading and trailing spaces are removed.
902
903 If we hit a line of the form "begin xxxx", the xxxx is placed in the
904 next_section vector, and the function returns NULL, indicating the end of a
905 configuration section. On end-of-file, NULL is returned with next_section
906 empty.
907
908 Arguments: none
909
910 Returns: a pointer to the first non-blank in the line,
911 or NULL if eof or end of section is reached
912 */
913
914 static uschar *
915 get_config_line(void)
916 {
917 int startoffset = 0; /* To first non-blank char in logical line */
918 int len = 0; /* Of logical line so far */
919 int newlen;
920 uschar *s, *ss;
921 macro_item *m;
922 BOOL macro_found;
923
924 /* Loop for handling continuation lines, skipping comments, and dealing with
925 .include files. */
926
927 for (;;)
928 {
929 if (Ufgets(big_buffer+len, big_buffer_size-len, config_file) == NULL)
930 {
931 if (config_file_stack != NULL) /* EOF inside .include */
932 {
933 (void)fclose(config_file);
934 config_file = config_file_stack->file;
935 config_filename = config_file_stack->filename;
936 config_lineno = config_file_stack->lineno;
937 config_file_stack = config_file_stack->next;
938 if (config_lines)
939 save_config_position(config_filename, config_lineno);
940 continue;
941 }
942
943 /* EOF at top level */
944
945 if (cstate_stack_ptr >= 0)
946 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
947 "Unexpected end of configuration file: .endif missing");
948
949 if (len != 0) break; /* EOF after continuation */
950 next_section[0] = 0; /* EOF at start of logical line */
951 return NULL;
952 }
953
954 config_lineno++;
955 newlen = len + Ustrlen(big_buffer + len);
956
957 if (config_lines && config_lineno == 1)
958 save_config_position(config_filename, config_lineno);
959
960 /* Handle pathologically long physical lines - yes, it did happen - by
961 extending big_buffer at this point. The code also copes with very long
962 logical lines. */
963
964 while (newlen == big_buffer_size - 1 && big_buffer[newlen - 1] != '\n')
965 {
966 uschar *newbuffer;
967 big_buffer_size += BIG_BUFFER_SIZE;
968 newbuffer = store_malloc(big_buffer_size);
969
970 /* This use of strcpy is OK because we know that the string in the old
971 buffer is shorter than the new buffer. */
972
973 Ustrcpy(newbuffer, big_buffer);
974 store_free(big_buffer);
975 big_buffer = newbuffer;
976 if (Ufgets(big_buffer+newlen, big_buffer_size-newlen, config_file) == NULL)
977 break;
978 newlen += Ustrlen(big_buffer + newlen);
979 }
980
981 /* Find the true start of the physical line - leading spaces are always
982 ignored. */
983
984 ss = big_buffer + len;
985 while (isspace(*ss)) ss++;
986
987 /* Process the physical line for macros. If this is the start of the logical
988 line, skip over initial text at the start of the line if it starts with an
989 upper case character followed by a sequence of name characters and an equals
990 sign, because that is the definition of a new macro, and we don't do
991 replacement therein. */
992
993 s = ss;
994 if (len == 0 && isupper(*s))
995 {
996 while (isalnum(*s) || *s == '_') s++;
997 while (isspace(*s)) s++;
998 if (*s != '=') s = ss; /* Not a macro definition */
999 }
1000
1001 /* If the builtin macros are not yet defined, and the line contains an
1002 underscrore followed by an one of the three possible chars used by
1003 builtins, create them. */
1004
1005 if (!macros_builtin_created)
1006 {
1007 const uschar * t, * p;
1008 uschar c;
1009 for (t = s; (p = CUstrchr(t, '_')); t = p+1)
1010 if (c = p[1], c == 'O' || c == 'D' || c == 'H')
1011 {
1012 macros_create_builtin();
1013 break;
1014 }
1015 }
1016
1017 /* For each defined macro, scan the line (from after XXX= if present),
1018 replacing all occurrences of the macro. */
1019
1020 macro_found = FALSE;
1021 for (m = macros; m; m = m->next)
1022 {
1023 uschar *p, *pp;
1024 uschar *t = s;
1025
1026 while ((p = Ustrstr(t, m->name)) != NULL)
1027 {
1028 int moveby;
1029 int replen = Ustrlen(m->replacement);
1030
1031 /* Expand the buffer if necessary */
1032
1033 while (newlen - m->namelen + replen + 1 > big_buffer_size)
1034 {
1035 int newsize = big_buffer_size + BIG_BUFFER_SIZE;
1036 uschar *newbuffer = store_malloc(newsize);
1037 memcpy(newbuffer, big_buffer, newlen + 1);
1038 p = newbuffer + (p - big_buffer);
1039 s = newbuffer + (s - big_buffer);
1040 ss = newbuffer + (ss - big_buffer);
1041 t = newbuffer + (t - big_buffer);
1042 big_buffer_size = newsize;
1043 store_free(big_buffer);
1044 big_buffer = newbuffer;
1045 }
1046
1047 /* Shuffle the remaining characters up or down in the buffer before
1048 copying in the replacement text. Don't rescan the replacement for this
1049 same macro. */
1050
1051 pp = p + m->namelen;
1052 if ((moveby = replen - m->namelen) != 0)
1053 {
1054 memmove(p + replen, pp, (big_buffer + newlen) - pp + 1);
1055 newlen += moveby;
1056 }
1057 Ustrncpy(p, m->replacement, replen);
1058 t = p + replen;
1059 macro_found = TRUE;
1060 }
1061 }
1062
1063 /* An empty macro replacement at the start of a line could mean that ss no
1064 longer points to the first non-blank character. */
1065
1066 while (isspace(*ss)) ss++;
1067
1068 /* Check for comment lines - these are physical lines. */
1069
1070 if (*ss == '#') continue;
1071
1072 /* Handle conditionals, which are also applied to physical lines. Conditions
1073 are of the form ".ifdef ANYTEXT" and are treated as true if any macro
1074 expansion occured on the rest of the line. A preliminary test for the leading
1075 '.' saves effort on most lines. */
1076
1077 if (*ss == '.')
1078 {
1079 int i;
1080
1081 /* Search the list of conditional directives */
1082
1083 for (i = 0; i < cond_list_size; i++)
1084 {
1085 int n;
1086 cond_item *c = cond_list+i;
1087 if (Ustrncmp(ss+1, c->name, c->namelen) != 0) continue;
1088
1089 /* The following character must be white space or end of string */
1090
1091 n = ss[1 + c->namelen];
1092 if (n != ' ' && n != 't' && n != '\n' && n != 0) break;
1093
1094 /* .ifdef and .ifndef push the current state onto the stack, then set
1095 a new one from the table. Stack overflow is an error */
1096
1097 if (c->pushpop > 0)
1098 {
1099 if (cstate_stack_ptr >= CSTATE_STACK_SIZE - 1)
1100 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1101 ".%s nested too deeply", c->name);
1102 cstate_stack[++cstate_stack_ptr] = cstate;
1103 cstate = next_cstate[cstate][macro_found? c->action1 : c->action2];
1104 }
1105
1106 /* For any of the others, stack underflow is an error. The next state
1107 comes either from the stack (.endif) or from the table. */
1108
1109 else
1110 {
1111 if (cstate_stack_ptr < 0)
1112 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1113 ".%s without matching .ifdef", c->name);
1114 cstate = (c->pushpop < 0)? cstate_stack[cstate_stack_ptr--] :
1115 next_cstate[cstate][macro_found? c->action1 : c->action2];
1116 }
1117
1118 /* Having dealt with a directive, break the loop */
1119
1120 break;
1121 }
1122
1123 /* If we have handled a conditional directive, continue with the next
1124 physical line. Otherwise, fall through. */
1125
1126 if (i < cond_list_size) continue;
1127 }
1128
1129 /* If the conditional state is not 0 (actively using these lines), ignore
1130 this input line. */
1131
1132 if (cstate != 0) continue; /* Conditional skip */
1133
1134 /* Handle .include lines - these are also physical lines. */
1135
1136 if (Ustrncmp(ss, ".include", 8) == 0 &&
1137 (isspace(ss[8]) ||
1138 (Ustrncmp(ss+8, "_if_exists", 10) == 0 && isspace(ss[18]))))
1139 {
1140 uschar *t;
1141 int include_if_exists = isspace(ss[8])? 0 : 10;
1142 config_file_item *save;
1143 struct stat statbuf;
1144
1145 ss += 9 + include_if_exists;
1146 while (isspace(*ss)) ss++;
1147 t = ss + Ustrlen(ss);
1148 while (t > ss && isspace(t[-1])) t--;
1149 if (*ss == '\"' && t[-1] == '\"')
1150 {
1151 ss++;
1152 t--;
1153 }
1154 *t = 0;
1155
1156 if (*ss != '/')
1157 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, ".include specifies a non-"
1158 "absolute path \"%s\"", ss);
1159
1160 if (include_if_exists != 0 && (Ustat(ss, &statbuf) != 0)) continue;
1161
1162 if (config_lines)
1163 save_config_position(config_filename, config_lineno);
1164 save = store_get(sizeof(config_file_item));
1165 save->next = config_file_stack;
1166 config_file_stack = save;
1167 save->file = config_file;
1168 save->filename = config_filename;
1169 save->lineno = config_lineno;
1170
1171 if (!(config_file = Ufopen(ss, "rb")))
1172 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "failed to open included "
1173 "configuration file %s", ss);
1174
1175 config_filename = string_copy(ss);
1176 config_lineno = 0;
1177 continue;
1178 }
1179
1180 /* If this is the start of the logical line, remember where the non-blank
1181 data starts. Otherwise shuffle down continuation lines to remove leading
1182 white space. */
1183
1184 if (len == 0)
1185 startoffset = ss - big_buffer;
1186 else
1187 {
1188 s = big_buffer + len;
1189 if (ss > s)
1190 {
1191 memmove(s, ss, (newlen - len) - (ss - s) + 1);
1192 newlen -= ss - s;
1193 }
1194 }
1195
1196 /* Accept the new addition to the line. Remove trailing white space. */
1197
1198 len = newlen;
1199 while (len > 0 && isspace(big_buffer[len-1])) len--;
1200 big_buffer[len] = 0;
1201
1202 /* We are done if the line does not end in backslash and contains some data.
1203 Empty logical lines are ignored. For continuations, remove the backslash and
1204 go round the loop to read the continuation line. */
1205
1206 if (len > 0)
1207 {
1208 if (big_buffer[len-1] != '\\') break; /* End of logical line */
1209 big_buffer[--len] = 0; /* Remove backslash */
1210 }
1211 } /* Loop for reading multiple physical lines */
1212
1213 /* We now have a logical line. Test for the end of a configuration section (or,
1214 more accurately, for the start of the next section). Place the name of the next
1215 section in next_section, and return NULL. If the name given is longer than
1216 next_section, truncate it. It will be unrecognized later, because all the known
1217 section names do fit. Leave space for pluralizing. */
1218
1219 s = big_buffer + startoffset; /* First non-space character */
1220
1221 if (config_lines)
1222 save_config_line(s);
1223
1224 if (strncmpic(s, US"begin ", 6) == 0)
1225 {
1226 s += 6;
1227 while (isspace(*s)) s++;
1228 if (big_buffer + len - s > sizeof(next_section) - 2)
1229 s[sizeof(next_section) - 2] = 0;
1230 Ustrcpy(next_section, s);
1231 return NULL;
1232 }
1233
1234 /* Return the first non-blank character. */
1235
1236 return s;
1237 }
1238
1239
1240
1241 /*************************************************
1242 * Read a name *
1243 *************************************************/
1244
1245 /* The yield is the pointer to the next uschar. Names longer than the
1246 output space are silently truncated. This function is also used from acl.c when
1247 parsing ACLs.
1248
1249 Arguments:
1250 name where to put the name
1251 len length of name
1252 s input pointer
1253
1254 Returns: new input pointer
1255 */
1256
1257 uschar *
1258 readconf_readname(uschar *name, int len, uschar *s)
1259 {
1260 int p = 0;
1261 while (isspace(*s)) s++;
1262 if (isalpha(*s))
1263 {
1264 while (isalnum(*s) || *s == '_')
1265 {
1266 if (p < len-1) name[p++] = *s;
1267 s++;
1268 }
1269 }
1270 name[p] = 0;
1271 while (isspace(*s)) s++;
1272 return s;
1273 }
1274
1275
1276
1277
1278 /*************************************************
1279 * Read a time value *
1280 *************************************************/
1281
1282 /* This function is also called from outside, to read argument
1283 time values. The format of a time value is:
1284
1285 [<n>w][<n>d][<n>h][<n>m][<n>s]
1286
1287 as long as at least one is present. If a format error is encountered,
1288 return a negative value. The value must be terminated by the given
1289 terminator.
1290
1291 Arguments:
1292 s input pointer
1293 terminator required terminating character
1294 return_msec if TRUE, allow fractional seconds and return milliseconds
1295
1296 Returns: the time value, or -1 on syntax error
1297 value is seconds if return_msec is FALSE
1298 value is milliseconds if return_msec is TRUE
1299 */
1300
1301 int
1302 readconf_readtime(const uschar *s, int terminator, BOOL return_msec)
1303 {
1304 int yield = 0;
1305 for (;;)
1306 {
1307 int value, count;
1308 double fraction;
1309
1310 if (!isdigit(*s)) return -1;
1311 (void)sscanf(CCS s, "%d%n", &value, &count);
1312 s += count;
1313
1314 switch (*s)
1315 {
1316 case 'w': value *= 7;
1317 case 'd': value *= 24;
1318 case 'h': value *= 60;
1319 case 'm': value *= 60;
1320 case 's': s++;
1321 break;
1322
1323 case '.':
1324 if (!return_msec) return -1;
1325 (void)sscanf(CCS s, "%lf%n", &fraction, &count);
1326 s += count;
1327 if (*s++ != 's') return -1;
1328 yield += (int)(fraction * 1000.0);
1329 break;
1330
1331 default: return -1;
1332 }
1333
1334 if (return_msec) value *= 1000;
1335 yield += value;
1336 if (*s == terminator) return yield;
1337 }
1338 /* Control never reaches here. */
1339 }
1340
1341
1342
1343 /*************************************************
1344 * Read a fixed point value *
1345 *************************************************/
1346
1347 /* The value is returned *1000
1348
1349 Arguments:
1350 s input pointer
1351 terminator required terminator
1352
1353 Returns: the value, or -1 on error
1354 */
1355
1356 static int
1357 readconf_readfixed(const uschar *s, int terminator)
1358 {
1359 int yield = 0;
1360 int value, count;
1361 if (!isdigit(*s)) return -1;
1362 (void)sscanf(CS s, "%d%n", &value, &count);
1363 s += count;
1364 yield = value * 1000;
1365 if (*s == '.')
1366 {
1367 int m = 100;
1368 while (isdigit((*(++s))))
1369 {
1370 yield += (*s - '0') * m;
1371 m /= 10;
1372 }
1373 }
1374
1375 return (*s == terminator)? yield : (-1);
1376 }
1377
1378
1379
1380 /*************************************************
1381 * Find option in list *
1382 *************************************************/
1383
1384 /* The lists are always in order, so binary chop can be used.
1385
1386 Arguments:
1387 name the option name to search for
1388 ol the first entry in the option list
1389 last one more than the offset of the last entry in the option list
1390
1391 Returns: pointer to an option entry, or NULL if not found
1392 */
1393
1394 static optionlist *
1395 find_option(uschar *name, optionlist *ol, int last)
1396 {
1397 int first = 0;
1398 while (last > first)
1399 {
1400 int middle = (first + last)/2;
1401 int c = Ustrcmp(name, ol[middle].name);
1402
1403 if (c == 0) return ol + middle;
1404 else if (c > 0) first = middle + 1;
1405 else last = middle;
1406 }
1407 return NULL;
1408 }
1409
1410
1411
1412 /*************************************************
1413 * Find a set flag in option list *
1414 *************************************************/
1415
1416 /* Because some versions of Unix make no restrictions on the values of uids and
1417 gids (even negative ones), we cannot represent "unset" by a special value.
1418 There is therefore a separate boolean variable for each one indicating whether
1419 a value is set or not. This function returns a pointer to the boolean, given
1420 the original option name. It is a major disaster if the flag cannot be found.
1421
1422 Arguments:
1423 name the name of the uid or gid option
1424 oltop points to the start of the relevant option list
1425 last one more than the offset of the last item in the option list
1426 data_block NULL when reading main options => data values in the option
1427 list are absolute addresses; otherwise they are byte offsets
1428 in data_block (used for driver options)
1429
1430 Returns: a pointer to the boolean flag.
1431 */
1432
1433 static BOOL *
1434 get_set_flag(uschar *name, optionlist *oltop, int last, void *data_block)
1435 {
1436 optionlist *ol;
1437 uschar name2[64];
1438 sprintf(CS name2, "*set_%.50s", name);
1439 ol = find_option(name2, oltop, last);
1440 if (ol == NULL) log_write(0, LOG_MAIN|LOG_PANIC_DIE,
1441 "Exim internal error: missing set flag for %s", name);
1442 return (data_block == NULL)? (BOOL *)(ol->value) :
1443 (BOOL *)((uschar *)data_block + (long int)(ol->value));
1444 }
1445
1446
1447
1448
1449 /*************************************************
1450 * Output extra characters message and die *
1451 *************************************************/
1452
1453 /* Called when an option line has junk on the end. Sometimes this is because
1454 the sysadmin thinks comments are permitted.
1455
1456 Arguments:
1457 s points to the extra characters
1458 t1..t3 strings to insert in the log message
1459
1460 Returns: doesn't return; dies
1461 */
1462
1463 static void
1464 extra_chars_error(const uschar *s, const uschar *t1, const uschar *t2, const uschar *t3)
1465 {
1466 uschar *comment = US"";
1467 if (*s == '#') comment = US" (# is comment only at line start)";
1468 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1469 "extra characters follow %s%s%s%s", t1, t2, t3, comment);
1470 }
1471
1472
1473
1474 /*************************************************
1475 * Read rewrite information *
1476 *************************************************/
1477
1478 /* Each line of rewrite information contains:
1479
1480 . A complete address in the form user@domain, possibly with
1481 leading * for each part; or alternatively, a regex.
1482
1483 . A replacement string (which will be expanded).
1484
1485 . An optional sequence of one-letter flags, indicating which
1486 headers etc. to apply this rule to.
1487
1488 All this is decoded and placed into a control block. The OR of the flags is
1489 maintained in a common word.
1490
1491 Arguments:
1492 p points to the string that makes up the rule
1493 existflags points to the overall flag word
1494 isglobal TRUE if reading global rewrite rules
1495
1496 Returns: the control block for the parsed rule.
1497 */
1498
1499 static rewrite_rule *
1500 readconf_one_rewrite(const uschar *p, int *existflags, BOOL isglobal)
1501 {
1502 rewrite_rule *next = store_get(sizeof(rewrite_rule));
1503
1504 next->next = NULL;
1505 next->key = string_dequote(&p);
1506
1507 while (isspace(*p)) p++;
1508 if (*p == 0)
1509 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1510 "missing rewrite replacement string");
1511
1512 next->flags = 0;
1513 next->replacement = string_dequote(&p);
1514
1515 while (*p != 0) switch (*p++)
1516 {
1517 case ' ': case '\t': break;
1518
1519 case 'q': next->flags |= rewrite_quit; break;
1520 case 'w': next->flags |= rewrite_whole; break;
1521
1522 case 'h': next->flags |= rewrite_all_headers; break;
1523 case 's': next->flags |= rewrite_sender; break;
1524 case 'f': next->flags |= rewrite_from; break;
1525 case 't': next->flags |= rewrite_to; break;
1526 case 'c': next->flags |= rewrite_cc; break;
1527 case 'b': next->flags |= rewrite_bcc; break;
1528 case 'r': next->flags |= rewrite_replyto; break;
1529
1530 case 'E': next->flags |= rewrite_all_envelope; break;
1531 case 'F': next->flags |= rewrite_envfrom; break;
1532 case 'T': next->flags |= rewrite_envto; break;
1533
1534 case 'Q': next->flags |= rewrite_qualify; break;
1535 case 'R': next->flags |= rewrite_repeat; break;
1536
1537 case 'S':
1538 next->flags |= rewrite_smtp;
1539 if (next->key[0] != '^' && Ustrncmp(next->key, "\\N^", 3) != 0)
1540 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1541 "rewrite rule has the S flag but is not a regular expression");
1542 break;
1543
1544 default:
1545 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1546 "unknown rewrite flag character '%c' "
1547 "(could be missing quotes round replacement item)", p[-1]);
1548 break;
1549 }
1550
1551 /* If no action flags are set, set all the "normal" rewrites. */
1552
1553 if ((next->flags & (rewrite_all | rewrite_smtp)) == 0)
1554 next->flags |= isglobal? rewrite_all : rewrite_all_headers;
1555
1556 /* Remember which exist, for optimization, and return the rule */
1557
1558 *existflags |= next->flags;
1559 return next;
1560 }
1561
1562
1563
1564
1565 /*************************************************
1566 * Read global rewrite information *
1567 *************************************************/
1568
1569 /* Each line is a single rewrite rule; it is parsed into a control block
1570 by readconf_one_rewrite(), and its flags are ORed into the global flag
1571 word rewrite_existflags. */
1572
1573 void
1574 readconf_rewrites(void)
1575 {
1576 rewrite_rule **chain = &global_rewrite_rules;
1577 uschar *p;
1578
1579 while ((p = get_config_line()) != NULL)
1580 {
1581 rewrite_rule *next = readconf_one_rewrite(p, &rewrite_existflags, TRUE);
1582 *chain = next;
1583 chain = &(next->next);
1584 }
1585 }
1586
1587
1588
1589 /*************************************************
1590 * Read a string *
1591 *************************************************/
1592
1593 /* Strings are read into the normal store pool. As long we aren't too
1594 near the end of the current block, the string will just use what is necessary
1595 on the top of the stacking pool, because string_cat() uses the extension
1596 mechanism.
1597
1598 Argument:
1599 s the rest of the input line
1600 name the option name (for errors)
1601
1602 Returns: pointer to the string
1603 */
1604
1605 static uschar *
1606 read_string(const uschar *s, const uschar *name)
1607 {
1608 uschar *yield;
1609 const uschar *ss;
1610
1611 if (*s != '\"') return string_copy(s);
1612
1613 ss = s;
1614 yield = string_dequote(&s);
1615
1616 if (s == ss+1 || s[-1] != '\"')
1617 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1618 "missing quote at end of string value for %s", name);
1619
1620 if (*s != 0) extra_chars_error(s, US"string value for ", name, US"");
1621
1622 return yield;
1623 }
1624
1625
1626 /*************************************************
1627 * Custom-handler options *
1628 *************************************************/
1629 static void
1630 fn_smtp_receive_timeout(const uschar * name, const uschar * str)
1631 {
1632 if (*str == '$')
1633 smtp_receive_timeout_s = string_copy(str);
1634 else
1635 {
1636 /* "smtp_receive_timeout", opt_time, &smtp_receive_timeout */
1637 smtp_receive_timeout = readconf_readtime(str, 0, FALSE);
1638 if (smtp_receive_timeout < 0)
1639 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "invalid time value for %s",
1640 name);
1641 }
1642 }
1643
1644 /*************************************************
1645 * Handle option line *
1646 *************************************************/
1647
1648 /* This function is called from several places to process a line containing the
1649 setting of an option. The first argument is the line to be decoded; it has been
1650 checked not to be empty and not to start with '#'. Trailing newlines and white
1651 space have been removed. The second argument is a pointer to the list of
1652 variable names that are to be recognized, together with their types and
1653 locations, and the third argument gives the number of entries in the list.
1654
1655 The fourth argument is a pointer to a data block. If it is NULL, then the data
1656 values in the options list are absolute addresses. Otherwise, they are byte
1657 offsets in the data block.
1658
1659 String option data may continue onto several lines; this function reads further
1660 data from config_file if necessary.
1661
1662 The yield of this function is normally zero. If a string continues onto
1663 multiple lines, then the data value is permitted to be followed by a comma
1664 or a semicolon (for use in drivers) and the yield is that character.
1665
1666 Arguments:
1667 buffer contains the configuration line to be handled
1668 oltop points to the start of the relevant option list
1669 last one more than the offset of the last item in the option list
1670 data_block NULL when reading main options => data values in the option
1671 list are absolute addresses; otherwise they are byte offsets
1672 in data_block when they have opt_public set; otherwise
1673 they are byte offsets in data_block->options_block.
1674 unknown_txt format string to use in panic message for unknown option;
1675 must contain %s for option name
1676 if given as NULL, don't panic on unknown option
1677
1678 Returns: TRUE if an option was read successfully,
1679 FALSE false for an unknown option if unknown_txt == NULL,
1680 otherwise panic and die on an unknown option
1681 */
1682
1683 static BOOL
1684 readconf_handle_option(uschar *buffer, optionlist *oltop, int last,
1685 void *data_block, uschar *unknown_txt)
1686 {
1687 int ptr = 0;
1688 int offset = 0;
1689 int n, count, type, value;
1690 int issecure = 0;
1691 uid_t uid;
1692 gid_t gid;
1693 BOOL boolvalue = TRUE;
1694 BOOL freesptr = TRUE;
1695 optionlist *ol, *ol2;
1696 struct passwd *pw;
1697 void *reset_point;
1698 int intbase = 0;
1699 uschar *inttype = US"";
1700 uschar *sptr;
1701 uschar *s = buffer;
1702 uschar **str_target;
1703 uschar name[64];
1704 uschar name2[64];
1705
1706 /* There may be leading spaces; thereafter, we expect an option name starting
1707 with a letter. */
1708
1709 while (isspace(*s)) s++;
1710 if (!isalpha(*s))
1711 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "option setting expected: %s", s);
1712
1713 /* Read the name of the option, and skip any subsequent white space. If
1714 it turns out that what we read was "hide", set the flag indicating that
1715 this is a secure option, and loop to read the next word. */
1716
1717 for (n = 0; n < 2; n++)
1718 {
1719 while (isalnum(*s) || *s == '_')
1720 {
1721 if (ptr < sizeof(name)-1) name[ptr++] = *s;
1722 s++;
1723 }
1724 name[ptr] = 0;
1725 while (isspace(*s)) s++;
1726 if (Ustrcmp(name, "hide") != 0) break;
1727 issecure = opt_secure;
1728 ptr = 0;
1729 }
1730
1731 /* Deal with "no_" or "not_" here for booleans */
1732
1733 if (Ustrncmp(name, "no_", 3) == 0)
1734 {
1735 boolvalue = FALSE;
1736 offset = 3;
1737 }
1738
1739 if (Ustrncmp(name, "not_", 4) == 0)
1740 {
1741 boolvalue = FALSE;
1742 offset = 4;
1743 }
1744
1745 /* Search the list for the given name. A non-existent name, or an option that
1746 is set twice, is a disaster. */
1747
1748 if (!(ol = find_option(name + offset, oltop, last)))
1749 {
1750 if (unknown_txt == NULL) return FALSE;
1751 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, CS unknown_txt, name);
1752 }
1753
1754 if ((ol->type & opt_set) && !(ol->type & (opt_rep_con | opt_rep_str)))
1755 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1756 "\"%s\" option set for the second time", name);
1757
1758 ol->type |= opt_set | issecure;
1759 type = ol->type & opt_mask;
1760
1761 /* Types with data values must be followed by '='; the "no[t]_" prefix
1762 applies only to boolean values. */
1763
1764 if (type < opt_bool || type > opt_bool_last)
1765 {
1766 if (offset != 0)
1767 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1768 "negation prefix applied to a non-boolean option");
1769 if (*s == 0)
1770 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1771 "unexpected end of line (data missing) after %s", name);
1772 if (*s != '=')
1773 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "missing \"=\" after %s", name);
1774 }
1775
1776 /* If a boolean wasn't preceded by "no[t]_" it can be followed by = and
1777 true/false/yes/no, or, in the case of opt_expand_bool, a general string that
1778 ultimately expands to one of those values. */
1779
1780 else if (*s != 0 && (offset != 0 || *s != '='))
1781 extra_chars_error(s, US"boolean option ", name, US"");
1782
1783 /* Skip white space after = */
1784
1785 if (*s == '=') while (isspace((*(++s))));
1786
1787 /* If there is a data block and the opt_public flag is not set, change
1788 the data block pointer to the private options block. */
1789
1790 if (data_block != NULL && (ol->type & opt_public) == 0)
1791 data_block = (void *)(((driver_instance *)data_block)->options_block);
1792
1793 /* Now get the data according to the type. */
1794
1795 switch (type)
1796 {
1797 /* If a string value is not enclosed in quotes, it consists of
1798 the rest of the current line, verbatim. Otherwise, string escapes
1799 are processed.
1800
1801 A transport is specified as a string, which is then looked up in the
1802 list of transports. A search type is specified as one of a number of
1803 known strings.
1804
1805 A set or rewrite rules for a driver is specified as a string, which is
1806 then parsed into a suitable chain of control blocks.
1807
1808 Uids and gids are specified as strings which are then looked up in the
1809 passwd file. Lists of uids and gids are similarly specified as colon-
1810 separated strings. */
1811
1812 case opt_stringptr:
1813 case opt_uid:
1814 case opt_gid:
1815 case opt_expand_uid:
1816 case opt_expand_gid:
1817 case opt_uidlist:
1818 case opt_gidlist:
1819 case opt_rewrite:
1820
1821 reset_point = sptr = read_string(s, name);
1822
1823 /* Having read a string, we now have several different ways of using it,
1824 depending on the data type, so do another switch. If keeping the actual
1825 string is not required (because it is interpreted), freesptr is set TRUE,
1826 and at the end we reset the pool. */
1827
1828 switch (type)
1829 {
1830 /* If this was a string, set the variable to point to the new string,
1831 and set the flag so its store isn't reclaimed. If it was a list of rewrite
1832 rules, we still keep the string (for printing), and parse the rules into a
1833 control block and flags word. */
1834
1835 case opt_stringptr:
1836 str_target = data_block ? USS (US data_block + (long int)(ol->value))
1837 : USS (ol->value);
1838 if (ol->type & opt_rep_con)
1839 {
1840 uschar * saved_condition;
1841 /* We already have a condition, we're conducting a crude hack to let
1842 multiple condition rules be chained together, despite storing them in
1843 text form. */
1844 *str_target = string_copy_malloc( (saved_condition = *str_target)
1845 ? string_sprintf("${if and{{bool_lax{%s}}{bool_lax{%s}}}}",
1846 saved_condition, sptr)
1847 : sptr);
1848 /* TODO(pdp): there is a memory leak here and just below
1849 when we set 3 or more conditions; I still don't
1850 understand the store mechanism enough to know
1851 what's the safe way to free content from an earlier store.
1852 AFAICT, stores stack, so freeing an early stored item also stores
1853 all data alloc'd after it. If we knew conditions were adjacent,
1854 we could survive that, but we don't. So I *think* we need to take
1855 another bit from opt_type to indicate "malloced"; this seems like
1856 quite a hack, especially for this one case. It also means that
1857 we can't ever reclaim the store from the *first* condition.
1858
1859 Because we only do this once, near process start-up, I'm prepared to
1860 let this slide for the time being, even though it rankles. */
1861 }
1862 else if (ol->type & opt_rep_str)
1863 {
1864 uschar sep_o = Ustrncmp(name, "headers_add", 11)==0 ? '\n' : ':';
1865 int sep_i = -(int)sep_o;
1866 const uschar * list = sptr;
1867 uschar * s;
1868 uschar * list_o = *str_target;
1869
1870 while ((s = string_nextinlist(&list, &sep_i, NULL, 0)))
1871 list_o = string_append_listele(list_o, sep_o, s);
1872 if (list_o)
1873 *str_target = string_copy_malloc(list_o);
1874 }
1875 else
1876 {
1877 *str_target = sptr;
1878 freesptr = FALSE;
1879 }
1880 break;
1881
1882 case opt_rewrite:
1883 if (data_block)
1884 *USS (US data_block + (long int)(ol->value)) = sptr;
1885 else
1886 *USS (ol->value) = sptr;
1887 freesptr = FALSE;
1888 if (type == opt_rewrite)
1889 {
1890 int sep = 0;
1891 int *flagptr;
1892 uschar *p = sptr;
1893 rewrite_rule **chain;
1894 optionlist *ol3;
1895
1896 sprintf(CS name2, "*%.50s_rules", name);
1897 ol2 = find_option(name2, oltop, last);
1898 sprintf(CS name2, "*%.50s_flags", name);
1899 ol3 = find_option(name2, oltop, last);
1900
1901 if (ol2 == NULL || ol3 == NULL)
1902 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1903 "rewrite rules not available for driver");
1904
1905 if (data_block == NULL)
1906 {
1907 chain = (rewrite_rule **)(ol2->value);
1908 flagptr = (int *)(ol3->value);
1909 }
1910 else
1911 {
1912 chain = (rewrite_rule **)((uschar *)data_block + (long int)(ol2->value));
1913 flagptr = (int *)((uschar *)data_block + (long int)(ol3->value));
1914 }
1915
1916 while ((p = string_nextinlist(CUSS &sptr, &sep, big_buffer, BIG_BUFFER_SIZE)))
1917 {
1918 rewrite_rule *next = readconf_one_rewrite(p, flagptr, FALSE);
1919 *chain = next;
1920 chain = &(next->next);
1921 }
1922
1923 if ((*flagptr & (rewrite_all_envelope | rewrite_smtp)) != 0)
1924 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "rewrite rule specifies a "
1925 "non-header rewrite - not allowed at transport time -");
1926 }
1927 break;
1928
1929 /* If it was an expanded uid, see if there is any expansion to be
1930 done by checking for the presence of a $ character. If there is, save it
1931 in the corresponding *expand_user option field. Otherwise, fall through
1932 to treat it as a fixed uid. Ensure mutual exclusivity of the two kinds
1933 of data. */
1934
1935 case opt_expand_uid:
1936 sprintf(CS name2, "*expand_%.50s", name);
1937 ol2 = find_option(name2, oltop, last);
1938 if (ol2 != NULL)
1939 {
1940 uschar *ss = (Ustrchr(sptr, '$') != NULL)? sptr : NULL;
1941
1942 if (data_block == NULL)
1943 *((uschar **)(ol2->value)) = ss;
1944 else
1945 *((uschar **)((uschar *)data_block + (long int)(ol2->value))) = ss;
1946
1947 if (ss != NULL)
1948 {
1949 *(get_set_flag(name, oltop, last, data_block)) = FALSE;
1950 freesptr = FALSE;
1951 break;
1952 }
1953 }
1954
1955 /* Look up a fixed uid, and also make use of the corresponding gid
1956 if a passwd entry is returned and the gid has not been set. */
1957
1958 case opt_uid:
1959 if (!route_finduser(sptr, &pw, &uid))
1960 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "user %s was not found", sptr);
1961 if (data_block == NULL)
1962 *((uid_t *)(ol->value)) = uid;
1963 else
1964 *((uid_t *)((uschar *)data_block + (long int)(ol->value))) = uid;
1965
1966 /* Set the flag indicating a fixed value is set */
1967
1968 *(get_set_flag(name, oltop, last, data_block)) = TRUE;
1969
1970 /* Handle matching gid if we have a passwd entry: done by finding the
1971 same name with terminating "user" changed to "group"; if not found,
1972 ignore. Also ignore if the value is already set. */
1973
1974 if (pw == NULL) break;
1975 Ustrcpy(name+Ustrlen(name)-4, "group");
1976 ol2 = find_option(name, oltop, last);
1977 if (ol2 != NULL && ((ol2->type & opt_mask) == opt_gid ||
1978 (ol2->type & opt_mask) == opt_expand_gid))
1979 {
1980 BOOL *set_flag = get_set_flag(name, oltop, last, data_block);
1981 if (! *set_flag)
1982 {
1983 if (data_block == NULL)
1984 *((gid_t *)(ol2->value)) = pw->pw_gid;
1985 else
1986 *((gid_t *)((uschar *)data_block + (long int)(ol2->value))) = pw->pw_gid;
1987 *set_flag = TRUE;
1988 }
1989 }
1990 break;
1991
1992 /* If it was an expanded gid, see if there is any expansion to be
1993 done by checking for the presence of a $ character. If there is, save it
1994 in the corresponding *expand_user option field. Otherwise, fall through
1995 to treat it as a fixed gid. Ensure mutual exclusivity of the two kinds
1996 of data. */
1997
1998 case opt_expand_gid:
1999 sprintf(CS name2, "*expand_%.50s", name);
2000 ol2 = find_option(name2, oltop, last);
2001 if (ol2 != NULL)
2002 {
2003 uschar *ss = (Ustrchr(sptr, '$') != NULL)? sptr : NULL;
2004
2005 if (data_block == NULL)
2006 *((uschar **)(ol2->value)) = ss;
2007 else
2008 *((uschar **)((uschar *)data_block + (long int)(ol2->value))) = ss;
2009
2010 if (ss != NULL)
2011 {
2012 *(get_set_flag(name, oltop, last, data_block)) = FALSE;
2013 freesptr = FALSE;
2014 break;
2015 }
2016 }
2017
2018 /* Handle freestanding gid */
2019
2020 case opt_gid:
2021 if (!route_findgroup(sptr, &gid))
2022 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "group %s was not found", sptr);
2023 if (data_block == NULL)
2024 *((gid_t *)(ol->value)) = gid;
2025 else
2026 *((gid_t *)((uschar *)data_block + (long int)(ol->value))) = gid;
2027 *(get_set_flag(name, oltop, last, data_block)) = TRUE;
2028 break;
2029
2030 /* If it was a uid list, look up each individual entry, and build
2031 a vector of uids, with a count in the first element. Put the vector
2032 in malloc store so we can free the string. (We are reading into
2033 permanent store already.) */
2034
2035 case opt_uidlist:
2036 {
2037 int count = 1;
2038 uid_t *list;
2039 int ptr = 0;
2040 const uschar *p;
2041 const uschar *op = expand_string (sptr);
2042
2043 if (op == NULL)
2044 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "failed to expand %s: %s",
2045 name, expand_string_message);
2046
2047 p = op;
2048 if (*p != 0) count++;
2049 while (*p != 0) if (*p++ == ':' && *p != 0) count++;
2050 list = store_malloc(count*sizeof(uid_t));
2051 list[ptr++] = (uid_t)(count - 1);
2052
2053 if (data_block == NULL)
2054 *((uid_t **)(ol->value)) = list;
2055 else
2056 *((uid_t **)((uschar *)data_block + (long int)(ol->value))) = list;
2057
2058 p = op;
2059 while (count-- > 1)
2060 {
2061 int sep = 0;
2062 (void)string_nextinlist(&p, &sep, big_buffer, BIG_BUFFER_SIZE);
2063 if (!route_finduser(big_buffer, NULL, &uid))
2064 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "user %s was not found",
2065 big_buffer);
2066 list[ptr++] = uid;
2067 }
2068 }
2069 break;
2070
2071 /* If it was a gid list, look up each individual entry, and build
2072 a vector of gids, with a count in the first element. Put the vector
2073 in malloc store so we can free the string. (We are reading into permanent
2074 store already.) */
2075
2076 case opt_gidlist:
2077 {
2078 int count = 1;
2079 gid_t *list;
2080 int ptr = 0;
2081 const uschar *p;
2082 const uschar *op = expand_string (sptr);
2083
2084 if (op == NULL)
2085 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "failed to expand %s: %s",
2086 name, expand_string_message);
2087
2088 p = op;
2089 if (*p != 0) count++;
2090 while (*p != 0) if (*p++ == ':' && *p != 0) count++;
2091 list = store_malloc(count*sizeof(gid_t));
2092 list[ptr++] = (gid_t)(count - 1);
2093
2094 if (data_block == NULL)
2095 *((gid_t **)(ol->value)) = list;
2096 else
2097 *((gid_t **)((uschar *)data_block + (long int)(ol->value))) = list;
2098
2099 p = op;
2100 while (count-- > 1)
2101 {
2102 int sep = 0;
2103 (void)string_nextinlist(&p, &sep, big_buffer, BIG_BUFFER_SIZE);
2104 if (!route_findgroup(big_buffer, &gid))
2105 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "group %s was not found",
2106 big_buffer);
2107 list[ptr++] = gid;
2108 }
2109 }
2110 break;
2111 }
2112
2113 /* Release store if the value of the string doesn't need to be kept. */
2114
2115 if (freesptr) store_reset(reset_point);
2116 break;
2117
2118 /* Expanded boolean: if no characters follow, or if there are no dollar
2119 characters, this is a fixed-valued boolean, and we fall through. Otherwise,
2120 save the string for later expansion in the alternate place. */
2121
2122 case opt_expand_bool:
2123 if (*s != 0 && Ustrchr(s, '$') != 0)
2124 {
2125 sprintf(CS name2, "*expand_%.50s", name);
2126 ol2 = find_option(name2, oltop, last);
2127 if (ol2 != NULL)
2128 {
2129 reset_point = sptr = read_string(s, name);
2130 if (data_block == NULL)
2131 *((uschar **)(ol2->value)) = sptr;
2132 else
2133 *((uschar **)((uschar *)data_block + (long int)(ol2->value))) = sptr;
2134 freesptr = FALSE;
2135 break;
2136 }
2137 }
2138 /* Fall through */
2139
2140 /* Boolean: if no characters follow, the value is boolvalue. Otherwise
2141 look for yes/not/true/false. Some booleans are stored in a single bit in
2142 a single int. There's a special fudge for verify settings; without a suffix
2143 they set both xx_sender and xx_recipient. The table points to the sender
2144 value; search subsequently for the recipient. There's another special case:
2145 opt_bool_set also notes when a boolean has been set. */
2146
2147 case opt_bool:
2148 case opt_bit:
2149 case opt_bool_verify:
2150 case opt_bool_set:
2151 if (*s != 0)
2152 {
2153 s = readconf_readname(name2, 64, s);
2154 if (strcmpic(name2, US"true") == 0 || strcmpic(name2, US"yes") == 0)
2155 boolvalue = TRUE;
2156 else if (strcmpic(name2, US"false") == 0 || strcmpic(name2, US"no") == 0)
2157 boolvalue = FALSE;
2158 else log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
2159 "\"%s\" is not a valid value for the \"%s\" option", name2, name);
2160 if (*s != 0) extra_chars_error(s, string_sprintf("\"%s\" ", name2),
2161 US"for boolean option ", name);
2162 }
2163
2164 /* Handle single-bit type. */
2165
2166 if (type == opt_bit)
2167 {
2168 int bit = 1 << ((ol->type >> 16) & 31);
2169 int *ptr = (data_block == NULL)?
2170 (int *)(ol->value) :
2171 (int *)((uschar *)data_block + (long int)ol->value);
2172 if (boolvalue) *ptr |= bit; else *ptr &= ~bit;
2173 break;
2174 }
2175
2176 /* Handle full BOOL types */
2177
2178 if (data_block == NULL)
2179 *((BOOL *)(ol->value)) = boolvalue;
2180 else
2181 *((BOOL *)((uschar *)data_block + (long int)(ol->value))) = boolvalue;
2182
2183 /* Verify fudge */
2184
2185 if (type == opt_bool_verify)
2186 {
2187 sprintf(CS name2, "%.50s_recipient", name + offset);
2188 ol2 = find_option(name2, oltop, last);
2189 if (ol2 != NULL)
2190 {
2191 if (data_block == NULL)
2192 *((BOOL *)(ol2->value)) = boolvalue;
2193 else
2194 *((BOOL *)((uschar *)data_block + (long int)(ol2->value))) = boolvalue;
2195 }
2196 }
2197
2198 /* Note that opt_bool_set type is set, if there is somewhere to do so */
2199
2200 else if (type == opt_bool_set)
2201 {
2202 sprintf(CS name2, "*set_%.50s", name + offset);
2203 ol2 = find_option(name2, oltop, last);
2204 if (ol2 != NULL)
2205 {
2206 if (data_block == NULL)
2207 *((BOOL *)(ol2->value)) = TRUE;
2208 else
2209 *((BOOL *)((uschar *)data_block + (long int)(ol2->value))) = TRUE;
2210 }
2211 }
2212 break;
2213
2214 /* Octal integer */
2215
2216 case opt_octint:
2217 intbase = 8;
2218 inttype = US"octal ";
2219
2220 /* Integer: a simple(ish) case; allow octal and hex formats, and
2221 suffixes K, M and G. The different types affect output, not input. */
2222
2223 case opt_mkint:
2224 case opt_int:
2225 {
2226 uschar *endptr;
2227 long int lvalue;
2228
2229 errno = 0;
2230 lvalue = strtol(CS s, CSS &endptr, intbase);
2231
2232 if (endptr == s)
2233 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "%sinteger expected for %s",
2234 inttype, name);
2235
2236 if (errno != ERANGE)
2237 if (tolower(*endptr) == 'k')
2238 {
2239 if (lvalue > INT_MAX/1024 || lvalue < INT_MIN/1024) errno = ERANGE;
2240 else lvalue *= 1024;
2241 endptr++;
2242 }
2243 else if (tolower(*endptr) == 'm')
2244 {
2245 if (lvalue > INT_MAX/(1024*1024) || lvalue < INT_MIN/(1024*1024))
2246 errno = ERANGE;
2247 else lvalue *= 1024*1024;
2248 endptr++;
2249 }
2250 else if (tolower(*endptr) == 'g')
2251 {
2252 if (lvalue > INT_MAX/(1024*1024*1024) || lvalue < INT_MIN/(1024*1024*1024))
2253 errno = ERANGE;
2254 else lvalue *= 1024*1024*1024;
2255 endptr++;
2256 }
2257
2258 if (errno == ERANGE || lvalue > INT_MAX || lvalue < INT_MIN)
2259 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
2260 "absolute value of integer \"%s\" is too large (overflow)", s);
2261
2262 while (isspace(*endptr)) endptr++;
2263 if (*endptr != 0)
2264 extra_chars_error(endptr, inttype, US"integer value for ", name);
2265
2266 value = (int)lvalue;
2267 }
2268
2269 if (data_block == NULL)
2270 *((int *)(ol->value)) = value;
2271 else
2272 *((int *)((uschar *)data_block + (long int)(ol->value))) = value;
2273 break;
2274
2275 /* Integer held in K: again, allow octal and hex formats, and suffixes K, M
2276 and G. */
2277 /*XXX consider moving to int_eximarith_t (but mind the overflow test 0415) */
2278
2279 case opt_Kint:
2280 {
2281 uschar *endptr;
2282 errno = 0;
2283 value = strtol(CS s, CSS &endptr, intbase);
2284
2285 if (endptr == s)
2286 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "%sinteger expected for %s",
2287 inttype, name);
2288
2289 if (errno != ERANGE)
2290 if (tolower(*endptr) == 'g')
2291 {
2292 if (value > INT_MAX/(1024*1024) || value < INT_MIN/(1024*1024))
2293 errno = ERANGE;
2294 else
2295 value *= 1024*1024;
2296 endptr++;
2297 }
2298 else if (tolower(*endptr) == 'm')
2299 {
2300 if (value > INT_MAX/1024 || value < INT_MIN/1024)
2301 errno = ERANGE;
2302 else
2303 value *= 1024;
2304 endptr++;
2305 }
2306 else if (tolower(*endptr) == 'k')
2307 endptr++;
2308 else
2309 value = (value + 512)/1024;
2310
2311 if (errno == ERANGE) log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
2312 "absolute value of integer \"%s\" is too large (overflow)", s);
2313
2314 while (isspace(*endptr)) endptr++;
2315 if (*endptr != 0)
2316 extra_chars_error(endptr, inttype, US"integer value for ", name);
2317 }
2318
2319 if (data_block == NULL)
2320 *((int *)(ol->value)) = value;
2321 else
2322 *((int *)((uschar *)data_block + (long int)(ol->value))) = value;
2323 break;
2324
2325 /* Fixed-point number: held to 3 decimal places. */
2326
2327 case opt_fixed:
2328 if (sscanf(CS s, "%d%n", &value, &count) != 1)
2329 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
2330 "fixed-point number expected for %s", name);
2331
2332 if (value < 0) log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
2333 "integer \"%s\" is too large (overflow)", s);
2334
2335 value *= 1000;
2336
2337 if (value < 0) log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
2338 "integer \"%s\" is too large (overflow)", s);
2339
2340 /* We get a coverity error here for using count, as it derived
2341 from the tainted buffer pointed to by s, as parsed by sscanf().
2342 By the definition of sscanf we must be aceessing between start
2343 and end of s (assuming it is nul-terminated...) so ignore the error. */
2344 /* coverity[tainted_data] */
2345 if (s[count] == '.')
2346 {
2347 int d = 100;
2348 while (isdigit(s[++count]))
2349 {
2350 value += (s[count] - '0') * d;
2351 d /= 10;
2352 }
2353 }
2354
2355 while (isspace(s[count])) count++;
2356
2357 if (s[count] != 0)
2358 extra_chars_error(s+count, US"fixed-point value for ", name, US"");
2359
2360 if (data_block == NULL)
2361 *((int *)(ol->value)) = value;
2362 else
2363 *((int *)((uschar *)data_block + (long int)(ol->value))) = value;
2364 break;
2365
2366 /* There's a special routine to read time values. */
2367
2368 case opt_time:
2369 value = readconf_readtime(s, 0, FALSE);
2370 if (value < 0)
2371 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "invalid time value for %s",
2372 name);
2373 if (data_block == NULL)
2374 *((int *)(ol->value)) = value;
2375 else
2376 *((int *)((uschar *)data_block + (long int)(ol->value))) = value;
2377 break;
2378
2379 /* A time list is a list of colon-separated times, with the first
2380 element holding the size of the list and the second the number of
2381 entries used. */
2382
2383 case opt_timelist:
2384 {
2385 int count = 0;
2386 int *list = (data_block == NULL)?
2387 (int *)(ol->value) :
2388 (int *)((uschar *)data_block + (long int)(ol->value));
2389
2390 if (*s != 0) for (count = 1; count <= list[0] - 2; count++)
2391 {
2392 int terminator = 0;
2393 uschar *snext = Ustrchr(s, ':');
2394 if (snext != NULL)
2395 {
2396 uschar *ss = snext;
2397 while (ss > s && isspace(ss[-1])) ss--;
2398 terminator = *ss;
2399 }
2400 value = readconf_readtime(s, terminator, FALSE);
2401 if (value < 0)
2402 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "invalid time value for %s",
2403 name);
2404 if (count > 1 && value <= list[count])
2405 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
2406 "time value out of order for %s", name);
2407 list[count+1] = value;
2408 if (snext == NULL) break;
2409 s = snext + 1;
2410 while (isspace(*s)) s++;
2411 }
2412
2413 if (count > list[0] - 2)
2414 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "too many time values for %s",
2415 name);
2416 if (count > 0 && list[2] == 0) count = 0;
2417 list[1] = count;
2418 break;
2419 }
2420
2421 case opt_func:
2422 {
2423 void (*fn)() = ol->value;
2424 fn(name, s);
2425 break;
2426 }
2427 }
2428
2429 return TRUE;
2430 }
2431
2432
2433
2434 /*************************************************
2435 * Print a time value *
2436 *************************************************/
2437
2438 /*
2439 Argument: a time value in seconds
2440 Returns: pointer to a fixed buffer containing the time as a string,
2441 in readconf_readtime() format
2442 */
2443
2444 uschar *
2445 readconf_printtime(int t)
2446 {
2447 int s, m, h, d, w;
2448 uschar *p = time_buffer;
2449
2450 if (t < 0)
2451 {
2452 *p++ = '-';
2453 t = -t;
2454 }
2455
2456 s = t % 60;
2457 t /= 60;
2458 m = t % 60;
2459 t /= 60;
2460 h = t % 24;
2461 t /= 24;
2462 d = t % 7;
2463 w = t/7;
2464
2465 if (w > 0) { sprintf(CS p, "%dw", w); while (*p) p++; }
2466 if (d > 0) { sprintf(CS p, "%dd", d); while (*p) p++; }
2467 if (h > 0) { sprintf(CS p, "%dh", h); while (*p) p++; }
2468 if (m > 0) { sprintf(CS p, "%dm", m); while (*p) p++; }
2469 if (s > 0 || p == time_buffer) sprintf(CS p, "%ds", s);
2470
2471 return time_buffer;
2472 }
2473
2474
2475
2476 /*************************************************
2477 * Print an individual option value *
2478 *************************************************/
2479
2480 /* This is used by the -bP option, so prints to the standard output.
2481 The entire options list is passed in as an argument, because some options come
2482 in pairs - typically uid/gid settings, which can either be explicit numerical
2483 values, or strings to be expanded later. If the numerical value is unset,
2484 search for "*expand_<name>" to see if there is a string equivalent.
2485
2486 Arguments:
2487 ol option entry, or NULL for an unknown option
2488 name option name
2489 options_block NULL for main configuration options; otherwise points to
2490 a driver block; if the option doesn't have opt_public
2491 set, then options_block->options_block is where the item
2492 resides.
2493 oltop points to the option list in which ol exists
2494 last one more than the offset of the last entry in optop
2495 no_labels do not show "foo = " at the start.
2496
2497 Returns: nothing
2498 */
2499
2500 static void
2501 print_ol(optionlist *ol, uschar *name, void *options_block,
2502 optionlist *oltop, int last, BOOL no_labels)
2503 {
2504 struct passwd *pw;
2505 struct group *gr;
2506 optionlist *ol2;
2507 void *value;
2508 uid_t *uidlist;
2509 gid_t *gidlist;
2510 uschar *s;
2511 uschar name2[64];
2512
2513 if (ol == NULL)
2514 {
2515 printf("%s is not a known option\n", name);
2516 return;
2517 }
2518
2519 /* Non-admin callers cannot see options that have been flagged secure by the
2520 "hide" prefix. */
2521
2522 if (!admin_user && (ol->type & opt_secure) != 0)
2523 {
2524 if (no_labels)
2525 printf("%s\n", hidden);
2526 else
2527 printf("%s = %s\n", name, hidden);
2528 return;
2529 }
2530
2531 /* Else show the value of the option */
2532
2533 value = ol->value;
2534 if (options_block != NULL)
2535 {
2536 if ((ol->type & opt_public) == 0)
2537 options_block = (void *)(((driver_instance *)options_block)->options_block);
2538 value = (void *)((uschar *)options_block + (long int)value);
2539 }
2540
2541 switch(ol->type & opt_mask)
2542 {
2543 case opt_stringptr:
2544 case opt_rewrite: /* Show the text value */
2545 s = *((uschar **)value);
2546 if (!no_labels) printf("%s = ", name);
2547 printf("%s\n", (s == NULL)? US"" : string_printing2(s, FALSE));
2548 break;
2549
2550 case opt_int:
2551 if (!no_labels) printf("%s = ", name);
2552 printf("%d\n", *((int *)value));
2553 break;
2554
2555 case opt_mkint:
2556 {
2557 int x = *((int *)value);
2558 if (x != 0 && (x & 1023) == 0)
2559 {
2560 int c = 'K';
2561 x >>= 10;
2562 if ((x & 1023) == 0)
2563 {
2564 c = 'M';
2565 x >>= 10;
2566 }
2567 if (!no_labels) printf("%s = ", name);
2568 printf("%d%c\n", x, c);
2569 }
2570 else
2571 {
2572 if (!no_labels) printf("%s = ", name);
2573 printf("%d\n", x);
2574 }
2575 }
2576 break;
2577
2578 case opt_Kint:
2579 {
2580 int x = *((int *)value);
2581 if (!no_labels) printf("%s = ", name);
2582 if (x == 0) printf("0\n");
2583 else if ((x & 1023) == 0) printf("%dM\n", x >> 10);
2584 else printf("%dK\n", x);
2585 }
2586 break;
2587
2588 case opt_octint:
2589 if (!no_labels) printf("%s = ", name);
2590 printf("%#o\n", *((int *)value));
2591 break;
2592
2593 /* Can be negative only when "unset", in which case integer */
2594
2595 case opt_fixed:
2596 {
2597 int x = *((int *)value);
2598 int f = x % 1000;
2599 int d = 100;
2600 if (x < 0) printf("%s =\n", name); else
2601 {
2602 if (!no_labels) printf("%s = ", name);
2603 printf("%d.", x/1000);
2604 do
2605 {
2606 printf("%d", f/d);
2607 f %= d;
2608 d /= 10;
2609 }
2610 while (f != 0);
2611 printf("\n");
2612 }
2613 }
2614 break;
2615
2616 /* If the numerical value is unset, try for the string value */
2617
2618 case opt_expand_uid:
2619 if (! *get_set_flag(name, oltop, last, options_block))
2620 {
2621 sprintf(CS name2, "*expand_%.50s", name);
2622 ol2 = find_option(name2, oltop, last);
2623 if (ol2 != NULL)
2624 {
2625 void *value2 = ol2->value;
2626 if (options_block != NULL)
2627 value2 = (void *)((uschar *)options_block + (long int)value2);
2628 s = *((uschar **)value2);
2629 if (!no_labels) printf("%s = ", name);
2630 printf("%s\n", (s == NULL)? US"" : string_printing(s));
2631 break;
2632 }
2633 }
2634
2635 /* Else fall through */
2636
2637 case opt_uid:
2638 if (!no_labels) printf("%s = ", name);
2639 if (! *get_set_flag(name, oltop, last, options_block))
2640 printf("\n");
2641 else
2642 {
2643 pw = getpwuid(*((uid_t *)value));
2644 if (pw == NULL)
2645 printf("%ld\n", (long int)(*((uid_t *)value)));
2646 else printf("%s\n", pw->pw_name);
2647 }
2648 break;
2649
2650 /* If the numerical value is unset, try for the string value */
2651
2652 case opt_expand_gid:
2653 if (! *get_set_flag(name, oltop, last, options_block))
2654 {
2655 sprintf(CS name2, "*expand_%.50s", name);
2656 ol2 = find_option(name2, oltop, last);
2657 if (ol2 != NULL && (ol2->type & opt_mask) == opt_stringptr)
2658 {
2659 void *value2 = ol2->value;
2660 if (options_block != NULL)
2661 value2 = (void *)((uschar *)options_block + (long int)value2);
2662 s = *((uschar **)value2);
2663 if (!no_labels) printf("%s = ", name);
2664 printf("%s\n", (s == NULL)? US"" : string_printing(s));
2665 break;
2666 }
2667 }
2668
2669 /* Else fall through */
2670
2671 case opt_gid:
2672 if (!no_labels) printf("%s = ", name);
2673 if (! *get_set_flag(name, oltop, last, options_block))
2674 printf("\n");
2675 else
2676 {
2677 gr = getgrgid(*((int *)value));
2678 if (gr == NULL)
2679 printf("%ld\n", (long int)(*((int *)value)));
2680 else printf("%s\n", gr->gr_name);
2681 }
2682 break;
2683
2684 case opt_uidlist:
2685 uidlist = *((uid_t **)value);
2686 if (!no_labels) printf("%s =", name);
2687 if (uidlist != NULL)
2688 {
2689 int i;
2690 uschar sep = ' ';
2691 if (no_labels) sep = '\0';
2692 for (i = 1; i <= (int)(uidlist[0]); i++)
2693 {
2694 uschar *name = NULL;
2695 pw = getpwuid(uidlist[i]);
2696 if (pw != NULL) name = US pw->pw_name;
2697 if (sep != '\0') printf("%c", sep);
2698 if (name != NULL) printf("%s", name);
2699 else printf("%ld", (long int)(uidlist[i]));
2700 sep = ':';
2701 }
2702 }
2703 printf("\n");
2704 break;
2705
2706 case opt_gidlist:
2707 gidlist = *((gid_t **)value);
2708 if (!no_labels) printf("%s =", name);
2709 if (gidlist != NULL)
2710 {
2711 int i;
2712 uschar sep = ' ';
2713 if (no_labels) sep = '\0';
2714 for (i = 1; i <= (int)(gidlist[0]); i++)
2715 {
2716 uschar *name = NULL;
2717 gr = getgrgid(gidlist[i]);
2718 if (gr != NULL) name = US gr->gr_name;
2719 if (sep != '\0') printf("%c", sep);
2720 if (name != NULL) printf("%s", name);
2721 else printf("%ld", (long int)(gidlist[i]));
2722 sep = ':';
2723 }
2724 }
2725 printf("\n");
2726 break;
2727
2728 case opt_time:
2729 if (!no_labels) printf("%s = ", name);
2730 printf("%s\n", readconf_printtime(*((int *)value)));
2731 break;
2732
2733 case opt_timelist:
2734 {
2735 int i;
2736 int *list = (int *)value;
2737 if (!no_labels) printf("%s = ", name);
2738 for (i = 0; i < list[1]; i++)
2739 printf("%s%s", (i == 0)? "" : ":", readconf_printtime(list[i+2]));
2740 printf("\n");
2741 }
2742 break;
2743
2744 case opt_bit:
2745 printf("%s%s\n", ((*((int *)value)) & (1 << ((ol->type >> 16) & 31)))?
2746 "" : "no_", name);
2747 break;
2748
2749 case opt_expand_bool:
2750 sprintf(CS name2, "*expand_%.50s", name);
2751 ol2 = find_option(name2, oltop, last);
2752 if (ol2 != NULL && ol2->value != NULL)
2753 {
2754 void *value2 = ol2->value;
2755 if (options_block != NULL)
2756 value2 = (void *)((uschar *)options_block + (long int)value2);
2757 s = *((uschar **)value2);
2758 if (s != NULL)
2759 {
2760 if (!no_labels) printf("%s = ", name);
2761 printf("%s\n", string_printing(s));
2762 break;
2763 }
2764 /* s == NULL => string not set; fall through */
2765 }
2766
2767 /* Fall through */
2768
2769 case opt_bool:
2770 case opt_bool_verify:
2771 case opt_bool_set:
2772 printf("%s%s\n", (*((BOOL *)value))? "" : "no_", name);
2773 break;
2774 }
2775 }
2776
2777
2778
2779 /*************************************************
2780 * Print value from main configuration *
2781 *************************************************/
2782
2783 /* This function, called as a result of encountering the -bP option,
2784 causes the value of any main configuration variable to be output if the
2785 second argument is NULL. There are some special values:
2786
2787 all print all main configuration options
2788 config_file print the name of the configuration file
2789 (configure_file will still work, for backward
2790 compatibility)
2791 routers print the routers' configurations
2792 transports print the transports' configuration
2793 authenticators print the authenticators' configuration
2794 macros print the macros' configuration
2795 router_list print a list of router names
2796 transport_list print a list of transport names
2797 authenticator_list print a list of authentication mechanism names
2798 macro_list print a list of macro names
2799 +name print a named list item
2800 local_scan print the local_scan options
2801 config print the configuration as it is parsed
2802 environment print the used execution environment
2803
2804 If the second argument is not NULL, it must be one of "router", "transport",
2805 "authenticator" or "macro" in which case the first argument identifies the
2806 driver whose options are to be printed.
2807
2808 Arguments:
2809 name option name if type == NULL; else driver name
2810 type NULL or driver type name, as described above
2811 no_labels avoid the "foo = " at the start of an item
2812
2813 Returns: nothing
2814 */
2815
2816 void
2817 readconf_print(uschar *name, uschar *type, BOOL no_labels)
2818 {
2819 BOOL names_only = FALSE;
2820 optionlist *ol;
2821 optionlist *ol2 = NULL;
2822 driver_instance *d = NULL;
2823 macro_item *m;
2824 int size = 0;
2825
2826 if (type == NULL)
2827 {
2828 if (*name == '+')
2829 {
2830 int i;
2831 tree_node *t;
2832 BOOL found = FALSE;
2833 static uschar *types[] = { US"address", US"domain", US"host",
2834 US"localpart" };
2835 static tree_node **anchors[] = { &addresslist_anchor, &domainlist_anchor,
2836 &hostlist_anchor, &localpartlist_anchor };
2837
2838 for (i = 0; i < 4; i++)
2839 {
2840 t = tree_search(*(anchors[i]), name+1);
2841 if (t != NULL)
2842 {
2843 found = TRUE;
2844 if (no_labels)
2845 printf("%s\n", ((namedlist_block *)(t->data.ptr))->string);
2846 else
2847 printf("%slist %s = %s\n", types[i], name+1,
2848 ((namedlist_block *)(t->data.ptr))->string);
2849 }
2850 }
2851
2852 if (!found)
2853 printf("no address, domain, host, or local part list called \"%s\" "
2854 "exists\n", name+1);
2855
2856 return;
2857 }
2858
2859 if ( Ustrcmp(name, "configure_file") == 0
2860 || Ustrcmp(name, "config_file") == 0)
2861 {
2862 printf("%s\n", CS config_main_filename);
2863 return;
2864 }
2865
2866 if (Ustrcmp(name, "all") == 0)
2867 {
2868 for (ol = optionlist_config;
2869 ol < optionlist_config + nelem(optionlist_config); ol++)
2870 {
2871 if ((ol->type & opt_hidden) == 0)
2872 print_ol(ol, US ol->name, NULL,
2873 optionlist_config, nelem(optionlist_config),
2874 no_labels);
2875 }
2876 return;
2877 }
2878
2879 if (Ustrcmp(name, "local_scan") == 0)
2880 {
2881 #ifndef LOCAL_SCAN_HAS_OPTIONS
2882 printf("local_scan() options are not supported\n");
2883 #else
2884 for (ol = local_scan_options;
2885 ol < local_scan_options + local_scan_options_count; ol++)
2886 {
2887 print_ol(ol, US ol->name, NULL, local_scan_options,
2888 local_scan_options_count, no_labels);
2889 }
2890 #endif
2891 return;
2892 }
2893
2894 if (Ustrcmp(name, "config") == 0)
2895 {
2896 print_config(admin_user, no_labels);
2897 return;
2898 }
2899
2900 if (Ustrcmp(name, "routers") == 0)
2901 {
2902 type = US"router";
2903 name = NULL;
2904 }
2905 else if (Ustrcmp(name, "transports") == 0)
2906 {
2907 type = US"transport";
2908 name = NULL;
2909 }
2910
2911 else if (Ustrcmp(name, "authenticators") == 0)
2912 {
2913 type = US"authenticator";
2914 name = NULL;
2915 }
2916
2917 else if (Ustrcmp(name, "macros") == 0)
2918 {
2919 type = US"macro";
2920 name = NULL;
2921 }
2922
2923 else if (Ustrcmp(name, "router_list") == 0)
2924 {
2925 type = US"router";
2926 name = NULL;
2927 names_only = TRUE;
2928 }
2929
2930 else if (Ustrcmp(name, "transport_list") == 0)
2931 {
2932 type = US"transport";
2933 name = NULL;
2934 names_only = TRUE;
2935 }
2936
2937 else if (Ustrcmp(name, "authenticator_list") == 0)
2938 {
2939 type = US"authenticator";
2940 name = NULL;
2941 names_only = TRUE;
2942 }
2943
2944 else if (Ustrcmp(name, "macro_list") == 0)
2945 {
2946 type = US"macro";
2947 name = NULL;
2948 names_only = TRUE;
2949 }
2950
2951 else if (Ustrcmp(name, "environment") == 0)
2952 {
2953 if (environ)
2954 {
2955 uschar ** p;
2956 for (p = USS environ; *p; p++) ;
2957 qsort(environ, p - USS environ, sizeof(*p), string_compare_by_pointer);
2958
2959 for (p = USS environ; *p; p++)
2960 {
2961 uschar * q;
2962 if (no_labels && (q = Ustrchr(*p, '='))) *q = '\0';
2963 puts(CS *p);
2964 }
2965 }
2966 return;
2967 }
2968
2969 else
2970 {
2971 print_ol(find_option(name, optionlist_config, nelem(optionlist_config)),
2972 name, NULL, optionlist_config, nelem(optionlist_config), no_labels);
2973 return;
2974 }
2975 }
2976
2977 /* Handle the options for a router or transport. Skip options that are flagged
2978 as hidden. Some of these are options with names starting with '*', used for
2979 internal alternative representations of other options (which the printing
2980 function will sort out). Others are synonyms kept for backward compatibility.
2981 */
2982
2983 if (Ustrcmp(type, "router") == 0)
2984 {
2985 d = (driver_instance *)routers;
2986 ol2 = optionlist_routers;
2987 size = optionlist_routers_size;
2988 }
2989 else if (Ustrcmp(type, "transport") == 0)
2990 {
2991 d = (driver_instance *)transports;
2992 ol2 = optionlist_transports;
2993 size = optionlist_transports_size;
2994 }
2995 else if (Ustrcmp(type, "authenticator") == 0)
2996 {
2997 d = (driver_instance *)auths;
2998 ol2 = optionlist_auths;
2999 size = optionlist_auths_size;
3000 }
3001
3002 else if (Ustrcmp(type, "macro") == 0)
3003 {
3004 /* People store passwords in macros and they were previously not available
3005 for printing. So we have an admin_users restriction. */
3006 if (!admin_user)
3007 {
3008 fprintf(stderr, "exim: permission denied\n");
3009 exit(EXIT_FAILURE);
3010 }
3011 if (!macros_builtin_created) macros_create_builtin();
3012 for (m = macros; m; m = m->next)
3013 if (!name || Ustrcmp(name, m->name) == 0)
3014 {
3015 if (names_only)
3016 printf("%s\n", CS m->name);
3017 else
3018 printf("%s=%s\n", CS m->name, CS m->replacement);
3019 if (name)
3020 return;
3021 }
3022 if (name)
3023 printf("%s %s not found\n", type, name);
3024 return;
3025 }
3026
3027 if (names_only)
3028 {
3029 for (; d != NULL; d = d->next) printf("%s\n", CS d->name);
3030 return;
3031 }
3032
3033 /* Either search for a given driver, or print all of them */
3034
3035 for (; d != NULL; d = d->next)
3036 {
3037 if (name == NULL)
3038 printf("\n%s %s:\n", d->name, type);
3039 else if (Ustrcmp(d->name, name) != 0) continue;
3040
3041 for (ol = ol2; ol < ol2 + size; ol++)
3042 {
3043 if ((ol->type & opt_hidden) == 0)
3044 print_ol(ol, US ol->name, d, ol2, size, no_labels);
3045 }
3046
3047 for (ol = d->info->options;
3048 ol < d->info->options + *(d->info->options_count); ol++)
3049 {
3050 if ((ol->type & opt_hidden) == 0)
3051 print_ol(ol, US ol->name, d, d->info->options, *(d->info->options_count), no_labels);
3052 }
3053 if (name != NULL) return;
3054 }
3055 if (name != NULL) printf("%s %s not found\n", type, name);
3056 }
3057
3058
3059
3060 /*************************************************
3061 * Read a named list item *
3062 *************************************************/
3063
3064 /* This function reads a name and a list (i.e. string). The name is used to
3065 save the list in a tree, sorted by its name. Each entry also has a number,
3066 which can be used for caching tests, but if the string contains any expansion
3067 items other than $key, the number is set negative to inhibit caching. This
3068 mechanism is used for domain, host, and address lists that are referenced by
3069 the "+name" syntax.
3070
3071 Arguments:
3072 anchorp points to the tree anchor
3073 numberp points to the current number for this tree
3074 max the maximum number permitted
3075 s the text of the option line, starting immediately after the name
3076 of the list type
3077 tname the name of the list type, for messages
3078
3079 Returns: nothing
3080 */
3081
3082 static void
3083 read_named_list(tree_node **anchorp, int *numberp, int max, uschar *s,
3084 uschar *tname)
3085 {
3086 BOOL forcecache = FALSE;
3087 uschar *ss;
3088 tree_node *t;
3089 namedlist_block *nb = store_get(sizeof(namedlist_block));
3090
3091 if (Ustrncmp(s, "_cache", 6) == 0)
3092 {
3093 forcecache = TRUE;
3094 s += 6;
3095 }
3096
3097 if (!isspace(*s))
3098 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "unrecognized configuration line");
3099
3100 if (*numberp >= max)
3101 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "too many named %ss (max is %d)\n",
3102 tname, max);
3103
3104 while (isspace(*s)) s++;
3105 ss = s;
3106 while (isalnum(*s) || *s == '_') s++;
3107 t = store_get(sizeof(tree_node) + s-ss);
3108 Ustrncpy(t->name, ss, s-ss);
3109 t->name[s-ss] = 0;
3110 while (isspace(*s)) s++;
3111
3112 if (!tree_insertnode(anchorp, t))
3113 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
3114 "duplicate name \"%s\" for a named %s", t->name, tname);
3115
3116 t->data.ptr = nb;
3117 nb->number = *numberp;
3118 *numberp += 1;
3119
3120 if (*s++ != '=') log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
3121 "missing '=' after \"%s\"", t->name);
3122 while (isspace(*s)) s++;
3123 nb->string = read_string(s, t->name);
3124 nb->cache_data = NULL;
3125
3126 /* Check the string for any expansions; if any are found, mark this list
3127 uncacheable unless the user has explicited forced caching. */
3128
3129 if (!forcecache && Ustrchr(nb->string, '$') != NULL) nb->number = -1;
3130 }
3131
3132
3133
3134
3135 /*************************************************
3136 * Unpick data for a rate limit *
3137 *************************************************/
3138
3139 /* This function is called to unpick smtp_ratelimit_{mail,rcpt} into four
3140 separate values.
3141
3142 Arguments:
3143 s string, in the form t,b,f,l
3144 where t is the threshold (integer)
3145 b is the initial delay (time)
3146 f is the multiplicative factor (fixed point)
3147 k is the maximum time (time)
3148 threshold where to store threshold
3149 base where to store base in milliseconds
3150 factor where to store factor in milliseconds
3151 limit where to store limit
3152
3153 Returns: nothing (panics on error)
3154 */
3155
3156 static void
3157 unpick_ratelimit(uschar *s, int *threshold, int *base, double *factor,
3158 int *limit)
3159 {
3160 uschar bstring[16], lstring[16];
3161
3162 if (sscanf(CS s, "%d, %15[0123456789smhdw.], %lf, %15s", threshold, bstring,
3163 factor, lstring) == 4)
3164 {
3165 *base = readconf_readtime(bstring, 0, TRUE);
3166 *limit = readconf_readtime(lstring, 0, TRUE);
3167 if (*base >= 0 && *limit >= 0) return;
3168 }
3169 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "malformed ratelimit data: %s", s);
3170 }
3171
3172
3173
3174
3175 /*************************************************
3176 * Drop privs for checking TLS config *
3177 *************************************************/
3178
3179 /* We want to validate TLS options during readconf, but do not want to be
3180 root when we call into the TLS library, in case of library linkage errors
3181 which cause segfaults; before this check, those were always done as the Exim
3182 runtime user and it makes sense to continue with that.
3183
3184 Assumes: tls_require_ciphers has been set, if it will be
3185 exim_user has been set, if it will be
3186 exim_group has been set, if it will be
3187
3188 Returns: bool for "okay"; false will cause caller to immediately exit.
3189 */
3190
3191 #ifdef SUPPORT_TLS
3192 static BOOL
3193 tls_dropprivs_validate_require_cipher(BOOL nowarn)
3194 {
3195 const uschar *errmsg;
3196 pid_t pid;
3197 int rc, status;
3198 void (*oldsignal)(int);
3199
3200 /* If TLS will never be used, no point checking ciphers */
3201
3202 if ( !tls_advertise_hosts
3203 || !*tls_advertise_hosts
3204 || Ustrcmp(tls_advertise_hosts, ":") == 0
3205 )
3206 return TRUE;
3207 else if (!nowarn && !tls_certificate)
3208 log_write(0, LOG_MAIN,
3209 "Warning: No server certificate defined; will use a selfsigned one.\n"
3210 " Suggested action: either install a certificate or change tls_advertise_hosts option");
3211
3212 oldsignal = signal(SIGCHLD, SIG_DFL);
3213
3214 fflush(NULL);
3215 if ((pid = fork()) < 0)
3216 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "fork failed for TLS check");
3217
3218 if (pid == 0)
3219 {
3220 /* in some modes, will have dropped privilege already */
3221 if (!geteuid())
3222 exim_setugid(exim_uid, exim_gid, FALSE,
3223 US"calling tls_validate_require_cipher");
3224
3225 errmsg = tls_validate_require_cipher();
3226 if (errmsg)
3227 {
3228 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
3229 "tls_require_ciphers invalid: %s", errmsg);
3230 }
3231 fflush(NULL);
3232 _exit(0);
3233 }
3234
3235 do {
3236 rc = waitpid(pid, &status, 0);
3237 } while (rc < 0 && errno == EINTR);
3238
3239 DEBUG(D_tls)
3240 debug_printf("tls_validate_require_cipher child %d ended: status=0x%x\n",
3241 (int)pid, status);
3242
3243 signal(SIGCHLD, oldsignal);
3244
3245 return status == 0;
3246 }
3247 #endif /* SUPPORT_TLS */
3248
3249
3250
3251
3252 /*************************************************
3253 * Read main configuration options *
3254 *************************************************/
3255
3256 /* This function is the first to be called for configuration reading. It
3257 opens the configuration file and reads general configuration settings until
3258 it reaches the end of the configuration section. The file is then left open so
3259 that the remaining configuration data can subsequently be read if needed for
3260 this run of Exim.
3261
3262 The configuration file must be owned either by root or exim, and be writeable
3263 only by root or uid/gid exim. The values for Exim's uid and gid can be changed
3264 in the config file, so the test is done on the compiled in values. A slight
3265 anomaly, to be carefully documented.
3266
3267 The name of the configuration file is taken from a list that is included in the
3268 binary of Exim. It can be altered from the command line, but if that is done,
3269 root privilege is immediately withdrawn unless the caller is root or exim.
3270 The first file on the list that exists is used.
3271
3272 For use on multiple systems that share file systems, first look for a
3273 configuration file whose name has the current node name on the end. If that is
3274 not found, try the generic name. For really contorted configurations, that run
3275 multiple Exims with different uid settings, first try adding the effective uid
3276 before the node name. These complications are going to waste resources on most
3277 systems. Therefore they are available only when requested by compile-time
3278 options. */
3279
3280 void
3281 readconf_main(BOOL nowarn)
3282 {
3283 int sep = 0;
3284 struct stat statbuf;
3285 uschar *s, *filename;
3286 const uschar *list = config_main_filelist;
3287
3288 /* Loop through the possible file names */
3289
3290 while((filename = string_nextinlist(&list, &sep, big_buffer, big_buffer_size)))
3291 {
3292
3293 /* Cut out all the fancy processing unless specifically wanted */
3294
3295 #if defined(CONFIGURE_FILE_USE_NODE) || defined(CONFIGURE_FILE_USE_EUID)
3296 uschar *suffix = filename + Ustrlen(filename);
3297
3298 /* Try for the node-specific file if a node name exists */
3299
3300 #ifdef CONFIGURE_FILE_USE_NODE
3301 struct utsname uts;
3302 if (uname(&uts) >= 0)
3303 {
3304 #ifdef CONFIGURE_FILE_USE_EUID
3305 sprintf(CS suffix, ".%ld.%.256s", (long int)original_euid, uts.nodename);
3306 config_file = Ufopen(filename, "rb");
3307 if (config_file == NULL)
3308 #endif /* CONFIGURE_FILE_USE_EUID */
3309 {
3310 sprintf(CS suffix, ".%.256s", uts.nodename);
3311 config_file = Ufopen(filename, "rb");
3312 }
3313 }
3314 #endif /* CONFIGURE_FILE_USE_NODE */
3315
3316 /* Otherwise, try the generic name, possibly with the euid added */
3317
3318 #ifdef CONFIGURE_FILE_USE_EUID
3319 if (config_file == NULL)
3320 {
3321 sprintf(CS suffix, ".%ld", (long int)original_euid);
3322 config_file = Ufopen(filename, "rb");
3323 }
3324 #endif /* CONFIGURE_FILE_USE_EUID */
3325
3326 /* Finally, try the unadorned name */
3327
3328 if (config_file == NULL)
3329 {
3330 *suffix = 0;
3331 config_file = Ufopen(filename, "rb");
3332 }
3333 #else /* if neither defined */
3334
3335 /* This is the common case when the fancy processing is not included. */
3336
3337 config_file = Ufopen(filename, "rb");
3338 #endif
3339
3340 /* If the file does not exist, continue to try any others. For any other
3341 error, break out (and die). */
3342
3343 if (config_file != NULL || errno != ENOENT) break;
3344 }
3345
3346 /* Now, once we found and opened our configuration file, we change the directory
3347 to a safe place. Later we change to $spool_directory. */
3348
3349 if (Uchdir("/") < 0)
3350 {
3351 perror("exim: chdir `/': ");
3352 exit(EXIT_FAILURE);
3353 }
3354
3355 /* On success, save the name for verification; config_filename is used when
3356 logging configuration errors (it changes for .included files) whereas
3357 config_main_filename is the name shown by -bP. Failure to open a configuration
3358 file is a serious disaster. */
3359
3360 if (config_file != NULL)
3361 {
3362 uschar *p;
3363 config_filename = config_main_filename = string_copy(filename);
3364
3365 p = Ustrrchr(filename, '/');
3366 config_main_directory = p ? string_copyn(filename, p - filename)
3367 : string_copy(US".");
3368 }
3369 else
3370 {
3371 if (filename == NULL)
3372 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "non-existent configuration file(s): "
3373 "%s", config_main_filelist);
3374 else
3375 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "%s", string_open_failed(errno,
3376 "configuration file %s", filename));
3377 }
3378
3379 /* Check the status of the file we have opened, if we have retained root
3380 privileges and the file isn't /dev/null (which *should* be 0666). */
3381
3382 if (trusted_config && Ustrcmp(filename, US"/dev/null"))
3383 {
3384 if (fstat(fileno(config_file), &statbuf) != 0)
3385 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "failed to stat configuration file %s",
3386 big_buffer);
3387
3388 if ((statbuf.st_uid != root_uid /* owner not root */
3389 #ifdef CONFIGURE_OWNER
3390 && statbuf.st_uid != config_uid /* owner not the special one */
3391 #endif
3392 ) || /* or */
3393 (statbuf.st_gid != root_gid /* group not root & */
3394 #ifdef CONFIGURE_GROUP
3395 && statbuf.st_gid != config_gid /* group not the special one */
3396 #endif
3397 && (statbuf.st_mode & 020) != 0) || /* group writeable */
3398 /* or */
3399 ((statbuf.st_mode & 2) != 0)) /* world writeable */
3400
3401 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "Exim configuration file %s has the "
3402 "wrong owner, group, or mode", big_buffer);
3403 }
3404
3405 /* Process the main configuration settings. They all begin with a lower case
3406 letter. If we see something starting with an upper case letter, it is taken as
3407 a macro definition. */
3408
3409 while ((s = get_config_line()) != NULL)
3410 {
3411 if (isupper(s[0])) read_macro_assignment(s);
3412
3413 else if (Ustrncmp(s, "domainlist", 10) == 0)
3414 read_named_list(&domainlist_anchor, &domainlist_count,
3415 MAX_NAMED_LIST, s+10, US"domain list");
3416
3417 else if (Ustrncmp(s, "hostlist", 8) == 0)
3418 read_named_list(&hostlist_anchor, &hostlist_count,
3419 MAX_NAMED_LIST, s+8, US"host list");
3420
3421 else if (Ustrncmp(s, US"addresslist", 11) == 0)
3422 read_named_list(&addresslist_anchor, &addresslist_count,
3423 MAX_NAMED_LIST, s+11, US"address list");
3424
3425 else if (Ustrncmp(s, US"localpartlist", 13) == 0)
3426 read_named_list(&localpartlist_anchor, &localpartlist_count,
3427 MAX_NAMED_LIST, s+13, US"local part list");
3428
3429 else
3430 (void) readconf_handle_option(s, optionlist_config, optionlist_config_size,
3431 NULL, US"main option \"%s\" unknown");
3432 }
3433
3434
3435 /* If local_sender_retain is set, local_from_check must be unset. */
3436
3437 if (local_sender_retain && local_from_check)
3438 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "both local_from_check and "
3439 "local_sender_retain are set; this combination is not allowed");
3440
3441 /* If the timezone string is empty, set it to NULL, implying no TZ variable
3442 wanted. */
3443
3444 if (timezone_string != NULL && *timezone_string == 0) timezone_string = NULL;
3445
3446 /* The max retry interval must not be greater than 24 hours. */
3447
3448 if (retry_interval_max > 24*60*60) retry_interval_max = 24*60*60;
3449
3450 /* remote_max_parallel must be > 0 */
3451
3452 if (remote_max_parallel <= 0) remote_max_parallel = 1;
3453
3454 /* Save the configured setting of freeze_tell, so we can re-instate it at the
3455 start of a new SMTP message. */
3456
3457 freeze_tell_config = freeze_tell;
3458
3459 /* The primary host name may be required for expansion of spool_directory
3460 and log_file_path, so make sure it is set asap. It is obtained from uname(),
3461 but if that yields an unqualified value, make a FQDN by using gethostbyname to
3462 canonize it. Some people like upper case letters in their host names, so we
3463 don't force the case. */
3464
3465 if (primary_hostname == NULL)
3466 {
3467 const uschar *hostname;
3468 struct utsname uts;
3469 if (uname(&uts) < 0)
3470 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "uname() failed to yield host name");
3471 hostname = US uts.nodename;
3472
3473 if (Ustrchr(hostname, '.') == NULL)
3474 {
3475 int af = AF_INET;
3476 struct hostent *hostdata;
3477
3478 #if HAVE_IPV6
3479 if (!disable_ipv6 && (dns_ipv4_lookup == NULL ||
3480 match_isinlist(hostname, CUSS &dns_ipv4_lookup, 0, NULL, NULL,
3481 MCL_DOMAIN, TRUE, NULL) != OK))
3482 af = AF_INET6;
3483 #else
3484 af = AF_INET;
3485 #endif
3486
3487 for (;;)
3488 {
3489 #if HAVE_IPV6
3490 #if HAVE_GETIPNODEBYNAME
3491 int error_num;
3492 hostdata = getipnodebyname(CS hostname, af, 0, &error_num);
3493 #else
3494 hostdata = gethostbyname2(CS hostname, af);
3495 #endif
3496 #else
3497 hostdata = gethostbyname(CS hostname);
3498 #endif
3499
3500 if (hostdata != NULL)
3501 {
3502 hostname = US hostdata->h_name;
3503 break;
3504 }
3505
3506 if (af == AF_INET) break;
3507 af = AF_INET;
3508 }
3509 }
3510
3511 primary_hostname = string_copy(hostname);
3512 }
3513
3514 /* Set up default value for smtp_active_hostname */
3515
3516 smtp_active_hostname = primary_hostname;
3517
3518 /* If spool_directory wasn't set in the build-time configuration, it must have
3519 got set above. Of course, writing to the log may not work if log_file_path is
3520 not set, but it will at least get to syslog or somewhere, with any luck. */
3521
3522 if (*spool_directory == 0)
3523 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "spool_directory undefined: cannot "
3524 "proceed");
3525
3526 /* Expand the spool directory name; it may, for example, contain the primary
3527 host name. Same comment about failure. */
3528
3529 s = expand_string(spool_directory);
3530 if (s == NULL)
3531 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "failed to expand spool_directory "
3532 "\"%s\": %s", spool_directory, expand_string_message);
3533 spool_directory = s;
3534
3535 /* Expand log_file_path, which must contain "%s" in any component that isn't
3536 the null string or "syslog". It is also allowed to contain one instance of %D
3537 or %M. However, it must NOT contain % followed by anything else. */
3538
3539 if (*log_file_path != 0)
3540 {
3541 const uschar *ss, *sss;
3542 int sep = ':'; /* Fixed for log file path */
3543 s = expand_string(log_file_path);
3544 if (s == NULL)
3545 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "failed to expand log_file_path "
3546 "\"%s\": %s", log_file_path, expand_string_message);
3547
3548 ss = s;
3549 while ((sss = string_nextinlist(&ss,&sep,big_buffer,big_buffer_size)) != NULL)
3550 {
3551 uschar *t;
3552 if (sss[0] == 0 || Ustrcmp(sss, "syslog") == 0) continue;
3553 t = Ustrstr(sss, "%s");
3554 if (t == NULL)
3555 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "log_file_path \"%s\" does not "
3556 "contain \"%%s\"", sss);
3557 *t = 'X';
3558 t = Ustrchr(sss, '%');
3559 if (t != NULL)
3560 {
3561 if ((t[1] != 'D' && t[1] != 'M') || Ustrchr(t+2, '%') != NULL)
3562 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "log_file_path \"%s\" contains "
3563 "unexpected \"%%\" character", s);
3564 }
3565 }
3566
3567 log_file_path = s;
3568 }
3569
3570 /* Interpret syslog_facility into an integer argument for 'ident' param to
3571 openlog(). Default is LOG_MAIL set in globals.c. Allow the user to omit the
3572 leading "log_". */
3573
3574 if (syslog_facility_str != NULL)
3575 {
3576 int i;
3577 uschar *s = syslog_facility_str;
3578
3579 if ((Ustrlen(syslog_facility_str) >= 4) &&
3580 (strncmpic(syslog_facility_str, US"log_", 4) == 0))
3581 s += 4;
3582
3583 for (i = 0; i < syslog_list_size; i++)
3584 {
3585 if (strcmpic(s, syslog_list[i].name) == 0)
3586 {
3587 syslog_facility = syslog_list[i].value;
3588 break;
3589 }
3590 }
3591
3592 if (i >= syslog_list_size)
3593 {
3594 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
3595 "failed to interpret syslog_facility \"%s\"", syslog_facility_str);
3596 }
3597 }
3598
3599 /* Expand pid_file_path */
3600
3601 if (*pid_file_path != 0)
3602 {
3603 s = expand_string(pid_file_path);
3604 if (s == NULL)
3605 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "failed to expand pid_file_path "
3606 "\"%s\": %s", pid_file_path, expand_string_message);
3607 pid_file_path = s;
3608 }
3609
3610 /* Set default value of process_log_path */
3611
3612 if (process_log_path == NULL || *process_log_path =='\0')
3613 process_log_path = string_sprintf("%s/exim-process.info", spool_directory);
3614
3615 /* Compile the regex for matching a UUCP-style "From_" line in an incoming
3616 message. */
3617
3618 regex_From = regex_must_compile(uucp_from_pattern, FALSE, TRUE);
3619
3620 /* Unpick the SMTP rate limiting options, if set */
3621
3622 if (smtp_ratelimit_mail != NULL)
3623 {
3624 unpick_ratelimit(smtp_ratelimit_mail, &smtp_rlm_threshold,
3625 &smtp_rlm_base, &smtp_rlm_factor, &smtp_rlm_limit);
3626 }
3627
3628 if (smtp_ratelimit_rcpt != NULL)
3629 {
3630 unpick_ratelimit(smtp_ratelimit_rcpt, &smtp_rlr_threshold,
3631 &smtp_rlr_base, &smtp_rlr_factor, &smtp_rlr_limit);
3632 }
3633
3634 /* The qualify domains default to the primary host name */
3635
3636 if (qualify_domain_sender == NULL)
3637 qualify_domain_sender = primary_hostname;
3638 if (qualify_domain_recipient == NULL)
3639 qualify_domain_recipient = qualify_domain_sender;
3640
3641 /* Setting system_filter_user in the configuration sets the gid as well if a
3642 name is given, but a numerical value does not. */
3643
3644 if (system_filter_uid_set && !system_filter_gid_set)
3645 {
3646 struct passwd *pw = getpwuid(system_filter_uid);
3647 if (pw == NULL)
3648 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "Failed to look up uid %ld",
3649 (long int)system_filter_uid);
3650 system_filter_gid = pw->pw_gid;
3651 system_filter_gid_set = TRUE;
3652 }
3653
3654 /* If the errors_reply_to field is set, check that it is syntactically valid
3655 and ensure it contains a domain. */
3656
3657 if (errors_reply_to != NULL)
3658 {
3659 uschar *errmess;
3660 int start, end, domain;
3661 uschar *recipient = parse_extract_address(errors_reply_to, &errmess,
3662 &start, &end, &domain, FALSE);
3663
3664 if (recipient == NULL)
3665 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
3666 "error in errors_reply_to (%s): %s", errors_reply_to, errmess);
3667
3668 if (domain == 0)
3669 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
3670 "errors_reply_to (%s) does not contain a domain", errors_reply_to);
3671 }
3672
3673 /* If smtp_accept_queue or smtp_accept_max_per_host is set, then
3674 smtp_accept_max must also be set. */
3675
3676 if (smtp_accept_max == 0 &&
3677 (smtp_accept_queue > 0 || smtp_accept_max_per_host != NULL))
3678 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
3679 "smtp_accept_max must be set if smtp_accept_queue or "
3680 "smtp_accept_max_per_host is set");
3681
3682 /* Set up the host number if anything is specified. It is an expanded string
3683 so that it can be computed from the host name, for example. We do this last
3684 so as to ensure that everything else is set up before the expansion. */
3685
3686 if (host_number_string != NULL)
3687 {
3688 long int n;
3689 uschar *end;
3690 uschar *s = expand_string(host_number_string);
3691 if (s == NULL)
3692 log_write(0, LOG_MAIN|LOG_PANIC_DIE,
3693 "failed to expand localhost_number \"%s\": %s",
3694 host_number_string, expand_string_message);
3695 n = Ustrtol(s, &end, 0);
3696 while (isspace(*end)) end++;
3697 if (*end != 0)
3698 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
3699 "localhost_number value is not a number: %s", s);
3700 if (n > LOCALHOST_MAX)
3701 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
3702 "localhost_number is greater than the maximum allowed value (%d)",
3703 LOCALHOST_MAX);
3704 host_number = n;
3705 }
3706
3707 #ifdef SUPPORT_TLS
3708 /* If tls_verify_hosts is set, tls_verify_certificates must also be set */
3709
3710 if ((tls_verify_hosts != NULL || tls_try_verify_hosts != NULL) &&
3711 tls_verify_certificates == NULL)
3712 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
3713 "tls_%sverify_hosts is set, but tls_verify_certificates is not set",
3714 (tls_verify_hosts != NULL)? "" : "try_");
3715
3716 /* This also checks that the library linkage is working and we can call
3717 routines in it, so call even if tls_require_ciphers is unset */
3718 if (!tls_dropprivs_validate_require_cipher(nowarn))
3719 exit(1);
3720
3721 /* Magic number: at time of writing, 1024 has been the long-standing value
3722 used by so many clients, and what Exim used to use always, that it makes
3723 sense to just min-clamp this max-clamp at that. */
3724 if (tls_dh_max_bits < 1024)
3725 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
3726 "tls_dh_max_bits is too small, must be at least 1024 for interop");
3727
3728 /* If openssl_options is set, validate it */
3729 if (openssl_options != NULL)
3730 {
3731 # ifdef USE_GNUTLS
3732 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
3733 "openssl_options is set but we're using GnuTLS");
3734 # else
3735 long dummy;
3736 if (!(tls_openssl_options_parse(openssl_options, &dummy)))
3737 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
3738 "openssl_options parse error: %s", openssl_options);
3739 # endif
3740 }
3741 #endif /*SUPPORT_TLS*/
3742
3743 if (!nowarn && !keep_environment && environ && *environ)
3744 log_write(0, LOG_MAIN,
3745 "Warning: purging the environment.\n"
3746 " Suggested action: use keep_environment.");
3747 }
3748
3749
3750
3751 /*************************************************
3752 * Initialize one driver *
3753 *************************************************/
3754
3755 /* This is called once the driver's generic options, if any, have been read.
3756 We can now find the driver, set up defaults for the private options, and
3757 unset any "set" bits in the private options table (which might have been
3758 set by another incarnation of the same driver).
3759
3760 Arguments:
3761 d pointer to driver instance block, with generic
3762 options filled in
3763 drivers_available vector of available drivers
3764 size_of_info size of each block in drivers_available
3765 class class of driver, for error message
3766
3767 Returns: pointer to the driver info block
3768 */
3769
3770 static driver_info *
3771 init_driver(driver_instance *d, driver_info *drivers_available,
3772 int size_of_info, uschar *class)
3773 {
3774 driver_info *dd;
3775
3776 for (dd = drivers_available; dd->driver_name[0] != 0;
3777 dd = (driver_info *)(((uschar *)dd) + size_of_info))
3778 {
3779 if (Ustrcmp(d->driver_name, dd->driver_name) == 0)
3780 {
3781 int i;
3782 int len = dd->options_len;
3783 d->info = dd;
3784 d->options_block = store_get(len);
3785 memcpy(d->options_block, dd->options_block, len);
3786 for (i = 0; i < *(dd->options_count); i++)
3787 dd->options[i].type &= ~opt_set;
3788 return dd;
3789 }
3790 }
3791
3792 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
3793 "%s %s: cannot find %s driver \"%s\"", class, d->name, class, d->driver_name);
3794
3795 return NULL; /* never obeyed */
3796 }
3797
3798
3799
3800
3801 /*************************************************
3802 * Initialize driver list *
3803 *************************************************/
3804
3805 /* This function is called for routers, transports, and authentication
3806 mechanisms. It reads the data from the current point in the configuration file
3807 up to the end of the section, and sets up a chain of instance blocks according
3808 to the file's contents. The file will already have been opened by a call to
3809 readconf_main, and must be left open for subsequent reading of further data.
3810
3811 Any errors cause a panic crash. Note that the blocks with names driver_info and
3812 driver_instance must map the first portions of all the _info and _instance
3813 blocks for this shared code to work.
3814
3815 Arguments:
3816 class "router", "transport", or "authenticator"
3817 anchor &routers, &transports, &auths
3818 drivers_available available drivers
3819 size_of_info size of each info block
3820 instance_default points to default data for an instance
3821 instance_size size of instance block
3822 driver_optionlist generic option list
3823 driver_optionlist_count count of generic option list
3824
3825 Returns: nothing
3826 */
3827
3828 void
3829 readconf_driver_init(
3830 uschar *class,
3831 driver_instance **anchor,
3832 driver_info *drivers_available,
3833 int size_of_info,
3834 void *instance_default,
3835 int instance_size,
3836 optionlist *driver_optionlist,
3837 int driver_optionlist_count)
3838 {
3839 driver_instance **p = anchor;
3840 driver_instance *d = NULL;
3841 uschar *buffer;
3842
3843 while ((buffer = get_config_line()) != NULL)
3844 {
3845 uschar name[64];
3846 uschar *s;
3847
3848 /* Read the first name on the line and test for the start of a new driver. A
3849 macro definition indicates the end of the previous driver. If this isn't the
3850 start of a new driver, the line will be re-read. */
3851
3852 s = readconf_readname(name, sizeof(name), buffer);
3853
3854 /* Handle macro definition, first finishing off the initialization of the
3855 previous driver, if any. */
3856
3857 if (isupper(*name) && *s == '=')
3858 {
3859 if (d)
3860 {
3861 if (!d->driver_name)
3862 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
3863 "no driver defined for %s \"%s\"", class, d->name);
3864 (d->info->init)(d);
3865 d = NULL;
3866 }
3867 read_macro_assignment(buffer);
3868 continue;
3869 }
3870
3871 /* If the line starts with a name terminated by a colon, we are at the
3872 start of the definition of a new driver. The rest of the line must be
3873 blank. */
3874
3875 if (*s++ == ':')
3876 {
3877 int i;
3878
3879 /* Finish off initializing the previous driver. */
3880
3881 if (d)
3882 {
3883 if (!d->driver_name)
3884 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
3885 "no driver defined for %s \"%s\"", class, d->name);
3886 (d->info->init)(d);
3887 }
3888
3889 /* Check that we haven't already got a driver of this name */
3890
3891 for (d = *anchor; d; d = d->next)
3892 if (Ustrcmp(name, d->name) == 0)
3893 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
3894 "there are two %ss called \"%s\"", class, name);
3895
3896 /* Set up a new driver instance data block on the chain, with
3897 its default values installed. */
3898
3899 d = store_get(instance_size);
3900 memcpy(d, instance_default, instance_size);
3901 *p = d;
3902 p = &d->next;
3903 d->name = string_copy(name);
3904
3905 /* Clear out the "set" bits in the generic options */
3906
3907 for (i = 0; i < driver_optionlist_count; i++)
3908 driver_optionlist[i].type &= ~opt_set;
3909
3910 /* Check nothing more on this line, then do the next loop iteration. */
3911
3912 while (isspace(*s)) s++;
3913 if (*s != 0) extra_chars_error(s, US"driver name ", name, US"");
3914 continue;
3915 }
3916
3917 /* Not the start of a new driver. Give an error if we have not set up a
3918 current driver yet. */
3919
3920 if (!d)
3921 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "%s name missing", class);
3922
3923 /* First look to see if this is a generic option; if it is "driver",
3924 initialize the driver. If is it not a generic option, we can look for a
3925 private option provided that the driver has been previously set up. */
3926
3927 if (readconf_handle_option(buffer, driver_optionlist,
3928 driver_optionlist_count, d, NULL))
3929 {
3930 if (!d->info && d->driver_name)
3931 init_driver(d, drivers_available, size_of_info, class);
3932 }
3933
3934 /* Handle private options - pass the generic block because some may
3935 live therein. A flag with each option indicates if it is in the public
3936 block. */
3937
3938 else if (d->info)
3939 readconf_handle_option(buffer, d->info->options,
3940 *(d->info->options_count), d, US"option \"%s\" unknown");
3941
3942 /* The option is not generic and the driver name has not yet been given. */
3943
3944 else log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "option \"%s\" unknown "
3945 "(\"driver\" must be specified before any private options)", name);
3946 }
3947
3948 /* Run the initialization function for the final driver. */
3949
3950 if (d)
3951 {
3952 if (!d->driver_name)
3953 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
3954 "no driver defined for %s \"%s\"", class, d->name);
3955 (d->info->init)(d);
3956 }
3957 }
3958
3959
3960
3961 /*************************************************
3962 * Check driver dependency *
3963 *************************************************/
3964
3965 /* This function is passed a driver instance and a string. It checks whether
3966 any of the string options for the driver contains the given string as an
3967 expansion variable.
3968
3969 Arguments:
3970 d points to a driver instance block
3971 s the string to search for
3972
3973 Returns: TRUE if a dependency is found
3974 */
3975
3976 BOOL
3977 readconf_depends(driver_instance *d, uschar *s)
3978 {
3979 int count = *(d->info->options_count);
3980 optionlist *ol;
3981 uschar *ss;
3982
3983 for (ol = d->info->options; ol < d->info->options + count; ol++)
3984 {
3985 void *options_block;
3986 uschar *value;
3987 int type = ol->type & opt_mask;
3988 if (type != opt_stringptr) continue;
3989 options_block = ((ol->type & opt_public) == 0)? d->options_block : (void *)d;
3990 value = *(uschar **)((uschar *)options_block + (long int)(ol->value));
3991 if (value != NULL && (ss = Ustrstr(value, s)) != NULL)
3992 {
3993 if (ss <= value || (ss[-1] != '$' && ss[-1] != '{') ||
3994 isalnum(ss[Ustrlen(s)])) continue;
3995 DEBUG(D_transport) debug_printf("driver %s: \"%s\" option depends on %s\n",
3996 d->name, ol->name, s);
3997 return TRUE;
3998 }
3999 }
4000
4001 DEBUG(D_transport) debug_printf("driver %s does not depend on %s\n", d->name, s);
4002 return FALSE;
4003 }
4004
4005
4006
4007
4008 /*************************************************
4009 * Decode an error type for retries *
4010 *************************************************/
4011
4012 /* This function is global because it is also called from the main
4013 program when testing retry information. It decodes strings such as "quota_7d"
4014 into numerical error codes.
4015
4016 Arguments:
4017 pp points to start of text
4018 p points past end of text
4019 basic_errno points to an int to receive the main error number
4020 more_errno points to an int to receive the secondary error data
4021
4022 Returns: NULL if decoded correctly; else points to error text
4023 */
4024
4025 uschar *
4026 readconf_retry_error(const uschar *pp, const uschar *p,
4027 int *basic_errno, int *more_errno)
4028 {
4029 int len;
4030 const uschar *q = pp;
4031 while (q < p && *q != '_') q++;
4032 len = q - pp;
4033
4034 if (len == 5 && strncmpic(pp, US"quota", len) == 0)
4035 {
4036 *basic_errno = ERRNO_EXIMQUOTA;
4037 if (q != p && (*more_errno = readconf_readtime(q+1, *p, FALSE)) < 0)
4038 return US"bad time value";
4039 }
4040
4041 else if (len == 7 && strncmpic(pp, US"refused", len) == 0)
4042 {
4043 *basic_errno = ECONNREFUSED;
4044 if (q != p)
4045 {
4046 if (strncmpic(q+1, US"MX", p-q-1) == 0) *more_errno = 'M';
4047 else if (strncmpic(q+1, US"A", p-q-1) == 0) *more_errno = 'A';
4048 else return US"A or MX expected after \"refused\"";
4049 }
4050 }
4051
4052 else if (len == 7 && strncmpic(pp, US"timeout", len) == 0)
4053 {
4054 *basic_errno = ETIMEDOUT;
4055 if (q != p)
4056 {
4057 int i;
4058 int xlen = p - q - 1;
4059 const uschar *x = q + 1;
4060
4061 static uschar *extras[] =
4062 { US"A", US"MX", US"connect", US"connect_A", US"connect_MX" };
4063 static int values[] =
4064 { 'A', 'M', RTEF_CTOUT, RTEF_CTOUT|'A', RTEF_CTOUT|'M' };
4065
4066 for (i = 0; i < sizeof(extras)/sizeof(uschar *); i++)
4067 if (strncmpic(x, extras[i], xlen) == 0)
4068 {
4069 *more_errno = values[i];
4070 break;
4071 }
4072
4073 if (i >= sizeof(extras)/sizeof(uschar *))
4074 if (strncmpic(x, US"DNS", xlen) == 0)
4075 log_write(0, LOG_MAIN|LOG_PANIC, "\"timeout_dns\" is no longer "
4076 "available in retry rules (it has never worked) - treated as "
4077 "\"timeout\"");
4078 else
4079 return US"\"A\", \"MX\", or \"connect\" expected after \"timeout\"";
4080 }
4081 }
4082
4083 else if (strncmpic(pp, US"mail_4", 6) == 0 ||
4084 strncmpic(pp, US"rcpt_4", 6) == 0 ||
4085 strncmpic(pp, US"data_4", 6) == 0)
4086 {
4087 BOOL bad = FALSE;
4088 int x = 255; /* means "any 4xx code" */
4089 if (p != pp + 8) bad = TRUE; else
4090 {
4091 int a = pp[6], b = pp[7];
4092 if (isdigit(a))
4093 {
4094 x = (a - '0') * 10;
4095 if (isdigit(b)) x += b - '0';
4096 else if (b == 'x') x += 100;
4097 else bad = TRUE;
4098 }
4099 else if (a != 'x' || b != 'x') bad = TRUE;
4100 }
4101
4102 if (bad)
4103 return string_sprintf("%.4s_4 must be followed by xx, dx, or dd, where "
4104 "x is literal and d is any digit", pp);
4105
4106 *basic_errno = *pp == 'm' ? ERRNO_MAIL4XX :
4107 *pp == 'r' ? ERRNO_RCPT4XX : ERRNO_DATA4XX;
4108 *more_errno = x << 8;
4109 }
4110
4111 else if (len == 4 && strncmpic(pp, US"auth", len) == 0 &&
4112 strncmpic(q+1, US"failed", p-q-1) == 0)
4113 *basic_errno = ERRNO_AUTHFAIL;
4114
4115 else if (strncmpic(pp, US"lost_connection", p - pp) == 0)
4116 *basic_errno = ERRNO_SMTPCLOSED;
4117
4118 else if (strncmpic(pp, US"tls_required", p - pp) == 0)
4119 *basic_errno = ERRNO_TLSREQUIRED;
4120
4121 else if (strncmpic(pp, US"lookup", p - pp) == 0)
4122 *basic_errno = ERRNO_UNKNOWNHOST;
4123
4124 else if (len != 1 || Ustrncmp(pp, "*", 1) != 0)
4125 return string_sprintf("unknown or malformed retry error \"%.*s\"", (int) (p-pp), pp);
4126
4127 return NULL;
4128 }
4129
4130
4131
4132
4133 /*************************************************
4134 * Read retry information *
4135 *************************************************/
4136
4137 /* Each line of retry information contains:
4138
4139 . A domain name pattern or an address pattern;
4140
4141 . An error name, possibly with additional data, or *;
4142
4143 . An optional sequence of retry items, each consisting of an identifying
4144 letter, a cutoff time, and optional parameters.
4145
4146 All this is decoded and placed into a control block. */
4147
4148
4149 /* Subroutine to read an argument, preceded by a comma and terminated
4150 by comma, semicolon, whitespace, or newline. The types are: 0 = time value,
4151 1 = fixed point number (returned *1000).
4152
4153 Arguments:
4154 paddr pointer to pointer to current character; updated
4155 type 0 => read a time; 1 => read a fixed point number
4156
4157 Returns: time in seconds or fixed point number * 1000
4158 */
4159
4160 static int
4161 retry_arg(const uschar **paddr, int type)
4162 {
4163 const uschar *p = *paddr;
4164 const uschar *pp;
4165
4166 if (*p++ != ',') log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "comma expected");
4167
4168 while (isspace(*p)) p++;
4169 pp = p;
4170 while (isalnum(*p) || (type == 1 && *p == '.')) p++;
4171
4172 if (*p != 0 && !isspace(*p) && *p != ',' && *p != ';')
4173 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "comma or semicolon expected");
4174
4175 *paddr = p;
4176 switch (type)
4177 {
4178 case 0: return readconf_readtime(pp, *p, FALSE);
4179 case 1: return readconf_readfixed(pp, *p);
4180 }
4181 return 0; /* Keep picky compilers happy */
4182 }
4183
4184 /* The function proper */
4185
4186 void
4187 readconf_retries(void)
4188 {
4189 retry_config **chain = &retries;
4190 retry_config *next;
4191 const uschar *p;
4192
4193 while ((p = get_config_line()))
4194 {
4195 retry_rule **rchain;
4196 const uschar *pp;
4197 uschar *error;
4198
4199 next = store_get(sizeof(retry_config));
4200 next->next = NULL;
4201 *chain = next;
4202 chain = &(next->next);
4203 next->basic_errno = next->more_errno = 0;
4204 next->senders = NULL;
4205 next->rules = NULL;
4206 rchain = &(next->rules);
4207
4208 next->pattern = string_dequote(&p);
4209 while (isspace(*p)) p++;
4210 pp = p;
4211 while (mac_isgraph(*p)) p++;
4212 if (p - pp <= 0) log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
4213 "missing error type in retry rule");
4214
4215 /* Test error names for things we understand. */
4216
4217 if ((error = readconf_retry_error(pp, p, &next->basic_errno,
4218 &next->more_errno)))
4219 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "%s", error);
4220
4221 /* There may be an optional address list of senders to be used as another
4222 constraint on the rule. This was added later, so the syntax is a bit of a
4223 fudge. Anything that is not a retry rule starting "F," or "G," is treated as
4224 an address list. */
4225
4226 while (isspace(*p)) p++;
4227 if (Ustrncmp(p, "senders", 7) == 0)
4228 {
4229 p += 7;
4230 while (isspace(*p)) p++;
4231 if (*p++ != '=') log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
4232 "\"=\" expected after \"senders\" in retry rule");
4233 while (isspace(*p)) p++;
4234 next->senders = string_dequote(&p);
4235 }
4236
4237 /* Now the retry rules. Keep the maximum timeout encountered. */
4238
4239 while (isspace(*p)) p++;
4240
4241 while (*p != 0)
4242 {
4243 retry_rule *rule = store_get(sizeof(retry_rule));
4244 *rchain = rule;
4245 rchain = &(rule->next);
4246 rule->next = NULL;
4247 rule->rule = toupper(*p++);
4248 rule->timeout = retry_arg(&p, 0);
4249 if (rule->timeout > retry_maximum_timeout)
4250 retry_maximum_timeout = rule->timeout;
4251
4252 switch (rule->rule)
4253 {
4254 case 'F': /* Fixed interval */
4255 rule->p1 = retry_arg(&p, 0);
4256 break;
4257
4258 case 'G': /* Geometrically increasing intervals */
4259 case 'H': /* Ditto, but with randomness */
4260 rule->p1 = retry_arg(&p, 0);
4261 rule->p2 = retry_arg(&p, 1);
4262 break;
4263
4264 default:
4265 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "unknown retry rule letter");
4266 break;
4267 }
4268
4269 if (rule->timeout <= 0 || rule->p1 <= 0 ||
4270 (rule->rule != 'F' && rule->p2 < 1000))
4271 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
4272 "bad parameters for retry rule");
4273
4274 while (isspace(*p)) p++;
4275 if (*p == ';')
4276 {
4277 p++;
4278 while (isspace(*p)) p++;
4279 }
4280 else if (*p != 0)
4281 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "semicolon expected");
4282 }
4283 }
4284 }
4285
4286
4287
4288 /*************************************************
4289 * Initialize authenticators *
4290 *************************************************/
4291
4292 static void
4293 readconf_options_auths(void)
4294 {
4295 struct auth_info * ai;
4296
4297 readconf_options_from_list(optionlist_auths, optionlist_auths_size, US"AU");
4298
4299 for (ai = auths_available; ai->driver_name[0]; ai++)
4300 {
4301 macro_create(string_sprintf("_DRVR_AUTH_%T", ai->driver_name), US"y", FALSE, TRUE);
4302 readconf_options_from_list(ai->options, (unsigned)*ai->options_count, ai->driver_name);
4303 }
4304 }
4305
4306
4307 /* Read the authenticators section of the configuration file.
4308
4309 Arguments: none
4310 Returns: nothing
4311 */
4312
4313 static void
4314 auths_init(void)
4315 {
4316 auth_instance *au, *bu;
4317
4318 readconf_driver_init(US"authenticator",
4319 (driver_instance **)(&auths), /* chain anchor */
4320 (driver_info *)auths_available, /* available drivers */
4321 sizeof(auth_info), /* size of info block */
4322 &auth_defaults, /* default values for generic options */
4323 sizeof(auth_instance), /* size of instance block */
4324 optionlist_auths, /* generic options */
4325 optionlist_auths_size);
4326
4327 for (au = auths; au; au = au->next)
4328 {
4329 if (!au->public_name)
4330 log_write(0, LOG_PANIC_DIE|LOG_CONFIG, "no public name specified for "
4331 "the %s authenticator", au->name);
4332
4333 for (bu = au->next; bu; bu = bu->next)
4334 if (strcmpic(au->public_name, bu->public_name) == 0)
4335 if ((au->client && bu->client) || (au->server && bu->server))
4336 log_write(0, LOG_PANIC_DIE|LOG_CONFIG, "two %s authenticators "
4337 "(%s and %s) have the same public name (%s)",
4338 au->client ? US"client" : US"server", au->name, bu->name,
4339 au->public_name);
4340 }
4341 }
4342
4343
4344
4345
4346 /*************************************************
4347 * Read ACL information *
4348 *************************************************/
4349
4350 /* If this run of Exim is not doing something that involves receiving a
4351 message, we can just skip over the ACL information. No need to parse it.
4352
4353 First, we have a function for acl_read() to call back to get the next line. We
4354 need to remember the line we passed, because at the end it will contain the
4355 name of the next ACL. */
4356
4357 static uschar *acl_line;
4358
4359 static uschar *
4360 acl_callback(void)
4361 {
4362 acl_line = get_config_line();
4363 return acl_line;
4364 }
4365
4366
4367 /* Now the main function:
4368
4369 Arguments: none
4370 Returns: nothing
4371 */
4372
4373 static void
4374 readconf_acl(void)
4375 {
4376 uschar *p;
4377
4378 /* Read each ACL and add it into the tree. Macro (re)definitions are allowed
4379 between ACLs. */
4380
4381 acl_line = get_config_line();
4382
4383 while(acl_line != NULL)
4384 {
4385 uschar name[64];
4386 tree_node *node;
4387 uschar *error;
4388
4389 p = readconf_readname(name, sizeof(name), acl_line);
4390 if (isupper(*name) && *p == '=')
4391 {
4392 read_macro_assignment(acl_line);
4393 acl_line = get_config_line();
4394 continue;
4395 }
4396
4397 if (*p != ':' || name[0] == 0)
4398 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "missing or malformed ACL name");
4399
4400 node = store_get(sizeof(tree_node) + Ustrlen(name));
4401 Ustrcpy(node->name, name);
4402 if (!tree_insertnode(&acl_anchor, node))
4403 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
4404 "there are two ACLs called \"%s\"", name);
4405
4406 node->data.ptr = acl_read(acl_callback, &error);
4407
4408 if (node->data.ptr == NULL && error != NULL)
4409 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "error in ACL: %s", error);
4410 }
4411 }
4412
4413
4414
4415 /*************************************************
4416 * Read configuration for local_scan() *
4417 *************************************************/
4418
4419 /* This function is called after "begin local_scan" is encountered in the
4420 configuration file. If the local_scan() function allows for configuration
4421 options, we can process them. Otherwise, we expire in a panic.
4422
4423 Arguments: none
4424 Returns: nothing
4425 */
4426
4427 static void
4428 local_scan_init(void)
4429 {
4430 #ifndef LOCAL_SCAN_HAS_OPTIONS
4431 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "local_scan() options not supported: "
4432 "(LOCAL_SCAN_HAS_OPTIONS not defined in Local/Makefile)");
4433 #else
4434
4435 uschar *p;
4436 while ((p = get_config_line()) != NULL)
4437 {
4438 (void) readconf_handle_option(p, local_scan_options, local_scan_options_count,
4439 NULL, US"local_scan option \"%s\" unknown");
4440 }
4441 #endif
4442 }
4443
4444
4445
4446 /*************************************************
4447 * Read rest of configuration (after main) *
4448 *************************************************/
4449
4450 /* This function reads the rest of the runtime configuration, after the main
4451 configuration. It is called only when actually needed. Each subsequent section
4452 of the configuration starts with a line of the form
4453
4454 begin name
4455
4456 where the name is "routers", "transports", etc. A section is terminated by
4457 hitting the next "begin" line, and the next name is left in next_section.
4458 Because it may confuse people as to whether the names are singular or plural,
4459 we add "s" if it's missing. There is always enough room in next_section for
4460 this. This function is basically just a switch.
4461
4462 Arguments: none
4463 Returns: nothing
4464 */
4465
4466 static uschar *section_list[] = {
4467 US"acls",
4468 US"authenticators",
4469 US"local_scans",
4470 US"retrys",
4471 US"rewrites",
4472 US"routers",
4473 US"transports"};
4474
4475 void
4476 readconf_rest(void)
4477 {
4478 int had = 0;
4479
4480 while(next_section[0] != 0)
4481 {
4482 int bit;
4483 int first = 0;
4484 int last = sizeof(section_list) / sizeof(uschar *);
4485 int mid = last/2;
4486 int n = Ustrlen(next_section);
4487
4488 if (tolower(next_section[n-1]) != 's') Ustrcpy(next_section+n, "s");
4489
4490 for (;;)
4491 {
4492 int c = strcmpic(next_section, section_list[mid]);
4493 if (c == 0) break;
4494 if (c > 0) first = mid + 1; else last = mid;
4495 if (first >= last)
4496 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
4497 "\"%.*s\" is not a known configuration section name", n, next_section);
4498 mid = (last + first)/2;
4499 }
4500
4501 bit = 1 << mid;
4502 if (((had ^= bit) & bit) == 0)
4503 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
4504 "\"%.*s\" section is repeated in the configuration file", n,
4505 next_section);
4506
4507 switch(mid)
4508 {
4509 case 0: readconf_acl(); break;
4510 case 1: auths_init(); break;
4511 case 2: local_scan_init(); break;
4512 case 3: readconf_retries(); break;
4513 case 4: readconf_rewrites(); break;
4514 case 5: route_init(); break;
4515 case 6: transport_init(); break;
4516 }
4517 }
4518
4519 (void)fclose(config_file);
4520 }
4521
4522 /* Init the storage for the pre-parsed config lines */
4523 void
4524 readconf_save_config(const uschar *s)
4525 {
4526 save_config_line(string_sprintf("# Exim Configuration (%s)",
4527 running_in_test_harness ? US"X" : s));
4528 }
4529
4530 static void
4531 save_config_position(const uschar *file, int line)
4532 {
4533 save_config_line(string_sprintf("# %d \"%s\"", line, file));
4534 }
4535
4536 /* Append a pre-parsed logical line to the config lines store,
4537 this operates on a global (static) list that holds all the pre-parsed
4538 config lines, we do no further processing here, output formatting and
4539 honouring of <hide> or macros will be done during output */
4540 static void
4541 save_config_line(const uschar* line)
4542 {
4543 static config_line_item *current;
4544 config_line_item *next;
4545
4546 next = (config_line_item*) store_get(sizeof(config_line_item));
4547 next->line = string_copy(line);
4548 next->next = NULL;
4549
4550 if (!config_lines) config_lines = next;
4551 else current->next = next;
4552
4553 current = next;
4554 }
4555
4556 /* List the parsed config lines, care about nice formatting and
4557 hide the <hide> values unless we're the admin user */
4558 void
4559 print_config(BOOL admin, BOOL terse)
4560 {
4561 config_line_item *i;
4562 const int TS = terse ? 0 : 2;
4563 int indent = 0;
4564
4565 for (i = config_lines; i; i = i->next)
4566 {
4567 uschar *current;
4568 uschar *p;
4569
4570 /* skip over to the first non-space */
4571 for (current = i->line; *current && isspace(*current); ++current)
4572 ;
4573
4574 if (*current == '\0')
4575 continue;
4576
4577 /* Collapse runs of spaces. We stop this if we encounter one of the
4578 * following characters: "'$, as this may indicate careful formatting */
4579 for (p = current; *p; ++p)
4580 {
4581 uschar *next;
4582 if (!isspace(*p)) continue;
4583 if (*p != ' ') *p = ' ';
4584
4585 for (next = p; isspace(*next); ++next)
4586 ;
4587
4588 if (next - p > 1)
4589 memmove(p+1, next, Ustrlen(next)+1);
4590
4591 if (*next == '"' || *next == '\'' || *next == '$')
4592 break;
4593 }
4594
4595 /* # lines */
4596 if (current[0] == '#')
4597 puts(CCS current);
4598
4599 /* begin lines are left aligned */
4600 else if (Ustrncmp(current, "begin", 5) == 0 && isspace(current[5]))
4601 {
4602 if (!terse) puts("");
4603 puts(CCS current);
4604 indent = TS;
4605 }
4606
4607 /* router/acl/transport block names */
4608 else if (current[Ustrlen(current)-1] == ':' && !Ustrchr(current, '='))
4609 {
4610 if (!terse) puts("");
4611 printf("%*s%s\n", TS, "", current);
4612 indent = 2 * TS;
4613 }
4614
4615 /* hidden lines (all MACROS or lines prefixed with "hide") */
4616 else if ( !admin
4617 && ( isupper(*current)
4618 || Ustrncmp(current, "hide", 4) == 0 && isspace(current[4])
4619 )
4620 )
4621 {
4622 if ((p = Ustrchr(current, '=')))
4623 {
4624 *p = '\0';
4625 printf("%*s%s= %s\n", indent, "", current, hidden);
4626 }
4627 /* e.g.: hide split_spool_directory */
4628 else
4629 printf("%*s\n", indent, hidden);
4630 }
4631
4632 else
4633 /* rest is public */
4634 printf("%*s%s\n", indent, "", current);
4635 }
4636 }
4637
4638 /* vi: aw ai sw=2
4639 */
4640 /* End of readconf.c */
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