1 /*************************************************
2 * Exim - an Internet mail transport agent *
3 *************************************************/
5 /* Copyright (c) University of Cambridge 1995 - 2015 */
6 /* See the file NOTICE for conditions of use and distribution. */
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. */
14 static void fn_smtp_receive_timeout(const uschar
* name
, const uschar
* str
);
15 static void save_config_line(const uschar
* line
);
16 static void save_config_position(const uschar
*file
, int line
);
17 static void print_config(BOOL admin
);
19 #define CSTATE_STACK_SIZE 10
22 /* Structure for chain (stack) of .included files */
24 typedef struct config_file_item
{
25 struct config_file_item
*next
;
31 /* Structure for chain of configuration lines (-bP config) */
33 typedef struct config_line_item
{
34 struct config_line_item
*next
;
38 static config_line_item
* config_lines
;
40 /* Structure of table of conditional words and their state transitions */
42 typedef struct cond_item
{
50 /* Structure of table of syslog facility names and values */
52 typedef struct syslog_fac_item
{
58 static const char * const hidden
= "<value not displayable>";
60 /* Static variables */
62 static config_file_item
*config_file_stack
= NULL
; /* For includes */
64 static uschar
*syslog_facility_str
= NULL
;
65 static uschar next_section
[24];
66 static uschar time_buffer
[24];
68 /* State variables for conditional loading (.ifdef / .else / .endif) */
70 static int cstate
= 0;
71 static int cstate_stack_ptr
= -1;
72 static int cstate_stack
[CSTATE_STACK_SIZE
];
74 /* Table of state transitions for handling conditional inclusions. There are
75 four possible state transitions:
79 .elifdef true (or .else)
82 .endif just causes the previous cstate to be popped off the stack */
84 static int next_cstate
[3][4] =
86 /* State 0: reading from file, or reading until next .else or .endif */
88 /* State 1: condition failed, skipping until next .else or .endif */
90 /* State 2: skipping until .endif */
94 /* Table of conditionals and the states to set. For each name, there are four
95 values: the length of the name (to save computing it each time), the state to
96 set if a macro was found in the line, the state to set if a macro was not found
97 in the line, and a stack manipulation setting which is:
99 -1 pull state value off the stack
100 0 don't alter the stack
101 +1 push value onto stack, before setting new state
104 static cond_item cond_list
[] = {
105 { US
"ifdef", 5, 0, 1, 1 },
106 { US
"ifndef", 6, 1, 0, 1 },
107 { US
"elifdef", 7, 2, 3, 0 },
108 { US
"elifndef", 8, 3, 2, 0 },
109 { US
"else", 4, 2, 2, 0 },
110 { US
"endif", 5, 0, 0, -1 }
113 static int cond_list_size
= sizeof(cond_list
)/sizeof(cond_item
);
115 /* Table of syslog facility names and their values */
117 static syslog_fac_item syslog_list
[] = {
118 { US
"mail", LOG_MAIL
},
119 { US
"user", LOG_USER
},
120 { US
"news", LOG_NEWS
},
121 { US
"uucp", LOG_UUCP
},
122 { US
"local0", LOG_LOCAL0
},
123 { US
"local1", LOG_LOCAL1
},
124 { US
"local2", LOG_LOCAL2
},
125 { US
"local3", LOG_LOCAL3
},
126 { US
"local4", LOG_LOCAL4
},
127 { US
"local5", LOG_LOCAL5
},
128 { US
"local6", LOG_LOCAL6
},
129 { US
"local7", LOG_LOCAL7
},
130 { US
"daemon", LOG_DAEMON
}
133 static int syslog_list_size
= sizeof(syslog_list
)/sizeof(syslog_fac_item
);
138 /*************************************************
139 * Main configuration options *
140 *************************************************/
142 /* The list of options that can be set in the main configuration file. This
143 must be in alphabetic order because it is searched by binary chop. */
145 static optionlist optionlist_config
[] = {
146 { "*set_exim_group", opt_bool
|opt_hidden
, &exim_gid_set
},
147 { "*set_exim_user", opt_bool
|opt_hidden
, &exim_uid_set
},
148 { "*set_system_filter_group", opt_bool
|opt_hidden
, &system_filter_gid_set
},
149 { "*set_system_filter_user", opt_bool
|opt_hidden
, &system_filter_uid_set
},
150 { "accept_8bitmime", opt_bool
, &accept_8bitmime
},
151 { "acl_not_smtp", opt_stringptr
, &acl_not_smtp
},
152 #ifdef WITH_CONTENT_SCAN
153 { "acl_not_smtp_mime", opt_stringptr
, &acl_not_smtp_mime
},
155 { "acl_not_smtp_start", opt_stringptr
, &acl_not_smtp_start
},
156 { "acl_smtp_auth", opt_stringptr
, &acl_smtp_auth
},
157 { "acl_smtp_connect", opt_stringptr
, &acl_smtp_connect
},
158 { "acl_smtp_data", opt_stringptr
, &acl_smtp_data
},
160 { "acl_smtp_data_prdr", opt_stringptr
, &acl_smtp_data_prdr
},
163 { "acl_smtp_dkim", opt_stringptr
, &acl_smtp_dkim
},
165 { "acl_smtp_etrn", opt_stringptr
, &acl_smtp_etrn
},
166 { "acl_smtp_expn", opt_stringptr
, &acl_smtp_expn
},
167 { "acl_smtp_helo", opt_stringptr
, &acl_smtp_helo
},
168 { "acl_smtp_mail", opt_stringptr
, &acl_smtp_mail
},
169 { "acl_smtp_mailauth", opt_stringptr
, &acl_smtp_mailauth
},
170 #ifdef WITH_CONTENT_SCAN
171 { "acl_smtp_mime", opt_stringptr
, &acl_smtp_mime
},
173 { "acl_smtp_notquit", opt_stringptr
, &acl_smtp_notquit
},
174 { "acl_smtp_predata", opt_stringptr
, &acl_smtp_predata
},
175 { "acl_smtp_quit", opt_stringptr
, &acl_smtp_quit
},
176 { "acl_smtp_rcpt", opt_stringptr
, &acl_smtp_rcpt
},
178 { "acl_smtp_starttls", opt_stringptr
, &acl_smtp_starttls
},
180 { "acl_smtp_vrfy", opt_stringptr
, &acl_smtp_vrfy
},
181 { "admin_groups", opt_gidlist
, &admin_groups
},
182 { "allow_domain_literals", opt_bool
, &allow_domain_literals
},
183 { "allow_mx_to_ip", opt_bool
, &allow_mx_to_ip
},
184 { "allow_utf8_domains", opt_bool
, &allow_utf8_domains
},
185 { "auth_advertise_hosts", opt_stringptr
, &auth_advertise_hosts
},
186 { "auto_thaw", opt_time
, &auto_thaw
},
187 #ifdef WITH_CONTENT_SCAN
188 { "av_scanner", opt_stringptr
, &av_scanner
},
190 { "bi_command", opt_stringptr
, &bi_command
},
191 #ifdef EXPERIMENTAL_BRIGHTMAIL
192 { "bmi_config_file", opt_stringptr
, &bmi_config_file
},
194 { "bounce_message_file", opt_stringptr
, &bounce_message_file
},
195 { "bounce_message_text", opt_stringptr
, &bounce_message_text
},
196 { "bounce_return_body", opt_bool
, &bounce_return_body
},
197 { "bounce_return_message", opt_bool
, &bounce_return_message
},
198 { "bounce_return_size_limit", opt_mkint
, &bounce_return_size_limit
},
199 { "bounce_sender_authentication",opt_stringptr
,&bounce_sender_authentication
},
200 { "callout_domain_negative_expire", opt_time
, &callout_cache_domain_negative_expire
},
201 { "callout_domain_positive_expire", opt_time
, &callout_cache_domain_positive_expire
},
202 { "callout_negative_expire", opt_time
, &callout_cache_negative_expire
},
203 { "callout_positive_expire", opt_time
, &callout_cache_positive_expire
},
204 { "callout_random_local_part",opt_stringptr
, &callout_random_local_part
},
205 { "check_log_inodes", opt_int
, &check_log_inodes
},
206 { "check_log_space", opt_Kint
, &check_log_space
},
207 { "check_rfc2047_length", opt_bool
, &check_rfc2047_length
},
208 { "check_spool_inodes", opt_int
, &check_spool_inodes
},
209 { "check_spool_space", opt_Kint
, &check_spool_space
},
210 { "daemon_smtp_port", opt_stringptr
|opt_hidden
, &daemon_smtp_port
},
211 { "daemon_smtp_ports", opt_stringptr
, &daemon_smtp_port
},
212 { "daemon_startup_retries", opt_int
, &daemon_startup_retries
},
213 { "daemon_startup_sleep", opt_time
, &daemon_startup_sleep
},
214 #ifdef EXPERIMENTAL_DCC
215 { "dcc_direct_add_header", opt_bool
, &dcc_direct_add_header
},
216 { "dccifd_address", opt_stringptr
, &dccifd_address
},
217 { "dccifd_options", opt_stringptr
, &dccifd_options
},
219 { "delay_warning", opt_timelist
, &delay_warning
},
220 { "delay_warning_condition", opt_stringptr
, &delay_warning_condition
},
221 { "deliver_drop_privilege", opt_bool
, &deliver_drop_privilege
},
222 { "deliver_queue_load_max", opt_fixed
, &deliver_queue_load_max
},
223 { "delivery_date_remove", opt_bool
, &delivery_date_remove
},
224 #ifdef ENABLE_DISABLE_FSYNC
225 { "disable_fsync", opt_bool
, &disable_fsync
},
227 { "disable_ipv6", opt_bool
, &disable_ipv6
},
229 { "dkim_verify_signers", opt_stringptr
, &dkim_verify_signers
},
231 #ifdef EXPERIMENTAL_DMARC
232 { "dmarc_forensic_sender", opt_stringptr
, &dmarc_forensic_sender
},
233 { "dmarc_history_file", opt_stringptr
, &dmarc_history_file
},
234 { "dmarc_tld_file", opt_stringptr
, &dmarc_tld_file
},
236 { "dns_again_means_nonexist", opt_stringptr
, &dns_again_means_nonexist
},
237 { "dns_check_names_pattern", opt_stringptr
, &check_dns_names_pattern
},
238 { "dns_csa_search_limit", opt_int
, &dns_csa_search_limit
},
239 { "dns_csa_use_reverse", opt_bool
, &dns_csa_use_reverse
},
240 { "dns_dnssec_ok", opt_int
, &dns_dnssec_ok
},
241 { "dns_ipv4_lookup", opt_stringptr
, &dns_ipv4_lookup
},
242 { "dns_retrans", opt_time
, &dns_retrans
},
243 { "dns_retry", opt_int
, &dns_retry
},
244 { "dns_trust_aa", opt_stringptr
, &dns_trust_aa
},
245 { "dns_use_edns0", opt_int
, &dns_use_edns0
},
246 /* This option is now a no-op, retained for compability */
247 { "drop_cr", opt_bool
, &drop_cr
},
248 /*********************************************************/
249 { "dsn_advertise_hosts", opt_stringptr
, &dsn_advertise_hosts
},
250 { "dsn_from", opt_stringptr
, &dsn_from
},
251 { "envelope_to_remove", opt_bool
, &envelope_to_remove
},
252 { "errors_copy", opt_stringptr
, &errors_copy
},
253 { "errors_reply_to", opt_stringptr
, &errors_reply_to
},
254 #ifdef EXPERIMENTAL_EVENT
255 { "event_action", opt_stringptr
, &event_action
},
257 { "exim_group", opt_gid
, &exim_gid
},
258 { "exim_path", opt_stringptr
, &exim_path
},
259 { "exim_user", opt_uid
, &exim_uid
},
260 { "extra_local_interfaces", opt_stringptr
, &extra_local_interfaces
},
261 { "extract_addresses_remove_arguments", opt_bool
, &extract_addresses_remove_arguments
},
262 { "finduser_retries", opt_int
, &finduser_retries
},
263 { "freeze_tell", opt_stringptr
, &freeze_tell
},
264 { "gecos_name", opt_stringptr
, &gecos_name
},
265 { "gecos_pattern", opt_stringptr
, &gecos_pattern
},
267 { "gnutls_allow_auto_pkcs11", opt_bool
, &gnutls_allow_auto_pkcs11
},
268 { "gnutls_compat_mode", opt_bool
, &gnutls_compat_mode
},
269 /* These three gnutls_require_* options stopped working in Exim 4.80 */
270 /* From 4.83 we log a warning; a future relase will remove them */
271 { "gnutls_require_kx", opt_stringptr
, &gnutls_require_kx
},
272 { "gnutls_require_mac", opt_stringptr
, &gnutls_require_mac
},
273 { "gnutls_require_protocols", opt_stringptr
, &gnutls_require_proto
},
275 { "header_line_maxsize", opt_int
, &header_line_maxsize
},
276 { "header_maxsize", opt_int
, &header_maxsize
},
277 { "headers_charset", opt_stringptr
, &headers_charset
},
278 { "helo_accept_junk_hosts", opt_stringptr
, &helo_accept_junk_hosts
},
279 { "helo_allow_chars", opt_stringptr
, &helo_allow_chars
},
280 { "helo_lookup_domains", opt_stringptr
, &helo_lookup_domains
},
281 { "helo_try_verify_hosts", opt_stringptr
, &helo_try_verify_hosts
},
282 { "helo_verify_hosts", opt_stringptr
, &helo_verify_hosts
},
283 { "hold_domains", opt_stringptr
, &hold_domains
},
284 { "host_lookup", opt_stringptr
, &host_lookup
},
285 { "host_lookup_order", opt_stringptr
, &host_lookup_order
},
286 { "host_reject_connection", opt_stringptr
, &host_reject_connection
},
287 { "hosts_connection_nolog", opt_stringptr
, &hosts_connection_nolog
},
288 { "hosts_treat_as_local", opt_stringptr
, &hosts_treat_as_local
},
290 { "ibase_servers", opt_stringptr
, &ibase_servers
},
292 { "ignore_bounce_errors_after", opt_time
, &ignore_bounce_errors_after
},
293 { "ignore_fromline_hosts", opt_stringptr
, &ignore_fromline_hosts
},
294 { "ignore_fromline_local", opt_bool
, &ignore_fromline_local
},
295 { "keep_malformed", opt_time
, &keep_malformed
},
297 { "ldap_ca_cert_dir", opt_stringptr
, &eldap_ca_cert_dir
},
298 { "ldap_ca_cert_file", opt_stringptr
, &eldap_ca_cert_file
},
299 { "ldap_cert_file", opt_stringptr
, &eldap_cert_file
},
300 { "ldap_cert_key", opt_stringptr
, &eldap_cert_key
},
301 { "ldap_cipher_suite", opt_stringptr
, &eldap_cipher_suite
},
302 { "ldap_default_servers", opt_stringptr
, &eldap_default_servers
},
303 { "ldap_require_cert", opt_stringptr
, &eldap_require_cert
},
304 { "ldap_start_tls", opt_bool
, &eldap_start_tls
},
305 { "ldap_version", opt_int
, &eldap_version
},
307 { "local_from_check", opt_bool
, &local_from_check
},
308 { "local_from_prefix", opt_stringptr
, &local_from_prefix
},
309 { "local_from_suffix", opt_stringptr
, &local_from_suffix
},
310 { "local_interfaces", opt_stringptr
, &local_interfaces
},
311 { "local_scan_timeout", opt_time
, &local_scan_timeout
},
312 { "local_sender_retain", opt_bool
, &local_sender_retain
},
313 { "localhost_number", opt_stringptr
, &host_number_string
},
314 { "log_file_path", opt_stringptr
, &log_file_path
},
315 { "log_selector", opt_stringptr
, &log_selector_string
},
316 { "log_timezone", opt_bool
, &log_timezone
},
317 { "lookup_open_max", opt_int
, &lookup_open_max
},
318 { "max_username_length", opt_int
, &max_username_length
},
319 { "message_body_newlines", opt_bool
, &message_body_newlines
},
320 { "message_body_visible", opt_mkint
, &message_body_visible
},
321 { "message_id_header_domain", opt_stringptr
, &message_id_domain
},
322 { "message_id_header_text", opt_stringptr
, &message_id_text
},
323 { "message_logs", opt_bool
, &message_logs
},
324 { "message_size_limit", opt_stringptr
, &message_size_limit
},
325 #ifdef SUPPORT_MOVE_FROZEN_MESSAGES
326 { "move_frozen_messages", opt_bool
, &move_frozen_messages
},
328 { "mua_wrapper", opt_bool
, &mua_wrapper
},
330 { "mysql_servers", opt_stringptr
, &mysql_servers
},
332 { "never_users", opt_uidlist
, &never_users
},
334 { "openssl_options", opt_stringptr
, &openssl_options
},
337 { "oracle_servers", opt_stringptr
, &oracle_servers
},
339 { "percent_hack_domains", opt_stringptr
, &percent_hack_domains
},
341 { "perl_at_start", opt_bool
, &opt_perl_at_start
},
342 { "perl_startup", opt_stringptr
, &opt_perl_startup
},
345 { "pgsql_servers", opt_stringptr
, &pgsql_servers
},
347 { "pid_file_path", opt_stringptr
, &pid_file_path
},
348 { "pipelining_advertise_hosts", opt_stringptr
, &pipelining_advertise_hosts
},
350 { "prdr_enable", opt_bool
, &prdr_enable
},
352 { "preserve_message_logs", opt_bool
, &preserve_message_logs
},
353 { "primary_hostname", opt_stringptr
, &primary_hostname
},
354 { "print_topbitchars", opt_bool
, &print_topbitchars
},
355 { "process_log_path", opt_stringptr
, &process_log_path
},
356 { "prod_requires_admin", opt_bool
, &prod_requires_admin
},
357 #ifdef EXPERIMENTAL_PROXY
358 { "proxy_required_hosts", opt_stringptr
, &proxy_required_hosts
},
360 { "qualify_domain", opt_stringptr
, &qualify_domain_sender
},
361 { "qualify_recipient", opt_stringptr
, &qualify_domain_recipient
},
362 { "queue_domains", opt_stringptr
, &queue_domains
},
363 { "queue_list_requires_admin",opt_bool
, &queue_list_requires_admin
},
364 { "queue_only", opt_bool
, &queue_only
},
365 { "queue_only_file", opt_stringptr
, &queue_only_file
},
366 { "queue_only_load", opt_fixed
, &queue_only_load
},
367 { "queue_only_load_latch", opt_bool
, &queue_only_load_latch
},
368 { "queue_only_override", opt_bool
, &queue_only_override
},
369 { "queue_run_in_order", opt_bool
, &queue_run_in_order
},
370 { "queue_run_max", opt_int
, &queue_run_max
},
371 { "queue_smtp_domains", opt_stringptr
, &queue_smtp_domains
},
372 { "receive_timeout", opt_time
, &receive_timeout
},
373 { "received_header_text", opt_stringptr
, &received_header_text
},
374 { "received_headers_max", opt_int
, &received_headers_max
},
375 { "recipient_unqualified_hosts", opt_stringptr
, &recipient_unqualified_hosts
},
376 { "recipients_max", opt_int
, &recipients_max
},
377 { "recipients_max_reject", opt_bool
, &recipients_max_reject
},
378 #ifdef EXPERIMENTAL_REDIS
379 { "redis_servers", opt_stringptr
, &redis_servers
},
381 { "remote_max_parallel", opt_int
, &remote_max_parallel
},
382 { "remote_sort_domains", opt_stringptr
, &remote_sort_domains
},
383 { "retry_data_expire", opt_time
, &retry_data_expire
},
384 { "retry_interval_max", opt_time
, &retry_interval_max
},
385 { "return_path_remove", opt_bool
, &return_path_remove
},
386 { "return_size_limit", opt_mkint
|opt_hidden
, &bounce_return_size_limit
},
387 { "rfc1413_hosts", opt_stringptr
, &rfc1413_hosts
},
388 { "rfc1413_query_timeout", opt_time
, &rfc1413_query_timeout
},
389 { "sender_unqualified_hosts", opt_stringptr
, &sender_unqualified_hosts
},
390 { "slow_lookup_log", opt_int
, &slow_lookup_log
},
391 { "smtp_accept_keepalive", opt_bool
, &smtp_accept_keepalive
},
392 { "smtp_accept_max", opt_int
, &smtp_accept_max
},
393 { "smtp_accept_max_nonmail", opt_int
, &smtp_accept_max_nonmail
},
394 { "smtp_accept_max_nonmail_hosts", opt_stringptr
, &smtp_accept_max_nonmail_hosts
},
395 { "smtp_accept_max_per_connection", opt_int
, &smtp_accept_max_per_connection
},
396 { "smtp_accept_max_per_host", opt_stringptr
, &smtp_accept_max_per_host
},
397 { "smtp_accept_queue", opt_int
, &smtp_accept_queue
},
398 { "smtp_accept_queue_per_connection", opt_int
, &smtp_accept_queue_per_connection
},
399 { "smtp_accept_reserve", opt_int
, &smtp_accept_reserve
},
400 { "smtp_active_hostname", opt_stringptr
, &raw_active_hostname
},
401 { "smtp_banner", opt_stringptr
, &smtp_banner
},
402 { "smtp_check_spool_space", opt_bool
, &smtp_check_spool_space
},
403 { "smtp_connect_backlog", opt_int
, &smtp_connect_backlog
},
404 { "smtp_enforce_sync", opt_bool
, &smtp_enforce_sync
},
405 { "smtp_etrn_command", opt_stringptr
, &smtp_etrn_command
},
406 { "smtp_etrn_serialize", opt_bool
, &smtp_etrn_serialize
},
407 { "smtp_load_reserve", opt_fixed
, &smtp_load_reserve
},
408 { "smtp_max_synprot_errors", opt_int
, &smtp_max_synprot_errors
},
409 { "smtp_max_unknown_commands",opt_int
, &smtp_max_unknown_commands
},
410 { "smtp_ratelimit_hosts", opt_stringptr
, &smtp_ratelimit_hosts
},
411 { "smtp_ratelimit_mail", opt_stringptr
, &smtp_ratelimit_mail
},
412 { "smtp_ratelimit_rcpt", opt_stringptr
, &smtp_ratelimit_rcpt
},
413 { "smtp_receive_timeout", opt_func
, &fn_smtp_receive_timeout
},
414 { "smtp_reserve_hosts", opt_stringptr
, &smtp_reserve_hosts
},
415 { "smtp_return_error_details",opt_bool
, &smtp_return_error_details
},
416 #ifdef EXPERIMENTAL_INTERNATIONAL
417 { "smtputf8_advertise_hosts", opt_stringptr
, &smtputf8_advertise_hosts
},
419 #ifdef WITH_CONTENT_SCAN
420 { "spamd_address", opt_stringptr
, &spamd_address
},
422 #ifdef EXPERIMENTAL_SPF
423 { "spf_guess", opt_stringptr
, &spf_guess
},
425 { "split_spool_directory", opt_bool
, &split_spool_directory
},
426 { "spool_directory", opt_stringptr
, &spool_directory
},
428 { "sqlite_lock_timeout", opt_int
, &sqlite_lock_timeout
},
430 #ifdef EXPERIMENTAL_SRS
431 { "srs_config", opt_stringptr
, &srs_config
},
432 { "srs_hashlength", opt_int
, &srs_hashlength
},
433 { "srs_hashmin", opt_int
, &srs_hashmin
},
434 { "srs_maxage", opt_int
, &srs_maxage
},
435 { "srs_secrets", opt_stringptr
, &srs_secrets
},
436 { "srs_usehash", opt_bool
, &srs_usehash
},
437 { "srs_usetimestamp", opt_bool
, &srs_usetimestamp
},
439 { "strict_acl_vars", opt_bool
, &strict_acl_vars
},
440 { "strip_excess_angle_brackets", opt_bool
, &strip_excess_angle_brackets
},
441 { "strip_trailing_dot", opt_bool
, &strip_trailing_dot
},
442 { "syslog_duplication", opt_bool
, &syslog_duplication
},
443 { "syslog_facility", opt_stringptr
, &syslog_facility_str
},
444 { "syslog_processname", opt_stringptr
, &syslog_processname
},
445 { "syslog_timestamp", opt_bool
, &syslog_timestamp
},
446 { "system_filter", opt_stringptr
, &system_filter
},
447 { "system_filter_directory_transport", opt_stringptr
,&system_filter_directory_transport
},
448 { "system_filter_file_transport",opt_stringptr
,&system_filter_file_transport
},
449 { "system_filter_group", opt_gid
, &system_filter_gid
},
450 { "system_filter_pipe_transport",opt_stringptr
,&system_filter_pipe_transport
},
451 { "system_filter_reply_transport",opt_stringptr
,&system_filter_reply_transport
},
452 { "system_filter_user", opt_uid
, &system_filter_uid
},
453 { "tcp_nodelay", opt_bool
, &tcp_nodelay
},
454 #ifdef USE_TCP_WRAPPERS
455 { "tcp_wrappers_daemon_name", opt_stringptr
, &tcp_wrappers_daemon_name
},
457 { "timeout_frozen_after", opt_time
, &timeout_frozen_after
},
458 { "timezone", opt_stringptr
, &timezone_string
},
459 { "tls_advertise_hosts", opt_stringptr
, &tls_advertise_hosts
},
461 { "tls_certificate", opt_stringptr
, &tls_certificate
},
462 { "tls_crl", opt_stringptr
, &tls_crl
},
463 { "tls_dh_max_bits", opt_int
, &tls_dh_max_bits
},
464 { "tls_dhparam", opt_stringptr
, &tls_dhparam
},
465 { "tls_eccurve", opt_stringptr
, &tls_eccurve
},
466 # ifndef DISABLE_OCSP
467 { "tls_ocsp_file", opt_stringptr
, &tls_ocsp_file
},
469 { "tls_on_connect_ports", opt_stringptr
, &tls_in
.on_connect_ports
},
470 { "tls_privatekey", opt_stringptr
, &tls_privatekey
},
471 { "tls_remember_esmtp", opt_bool
, &tls_remember_esmtp
},
472 { "tls_require_ciphers", opt_stringptr
, &tls_require_ciphers
},
473 { "tls_try_verify_hosts", opt_stringptr
, &tls_try_verify_hosts
},
474 { "tls_verify_certificates", opt_stringptr
, &tls_verify_certificates
},
475 { "tls_verify_hosts", opt_stringptr
, &tls_verify_hosts
},
477 { "trusted_groups", opt_gidlist
, &trusted_groups
},
478 { "trusted_users", opt_uidlist
, &trusted_users
},
479 { "unknown_login", opt_stringptr
, &unknown_login
},
480 { "unknown_username", opt_stringptr
, &unknown_username
},
481 { "untrusted_set_sender", opt_stringptr
, &untrusted_set_sender
},
482 { "uucp_from_pattern", opt_stringptr
, &uucp_from_pattern
},
483 { "uucp_from_sender", opt_stringptr
, &uucp_from_sender
},
484 { "warn_message_file", opt_stringptr
, &warn_message_file
},
485 { "write_rejectlog", opt_bool
, &write_rejectlog
}
488 static int optionlist_config_size
=
489 sizeof(optionlist_config
)/sizeof(optionlist
);
493 /*************************************************
494 * Find the name of an option *
495 *************************************************/
497 /* This function is to aid debugging. Various functions take arguments that are
498 pointer variables in the options table or in option tables for various drivers.
499 For debugging output, it is useful to be able to find the name of the option
500 which is currently being processed. This function finds it, if it exists, by
501 searching the table(s).
503 Arguments: a value that is presumed to be in the table above
504 Returns: the option name, or an empty string
508 readconf_find_option(void *p
)
512 transport_instance
*t
;
514 for (i
= 0; i
< optionlist_config_size
; i
++)
515 if (p
== optionlist_config
[i
].value
) return US optionlist_config
[i
].name
;
517 for (r
= routers
; r
!= NULL
; r
= r
->next
)
519 router_info
*ri
= r
->info
;
520 for (i
= 0; i
< *ri
->options_count
; i
++)
522 if ((ri
->options
[i
].type
& opt_mask
) != opt_stringptr
) continue;
523 if (p
== (char *)(r
->options_block
) + (long int)(ri
->options
[i
].value
))
524 return US ri
->options
[i
].name
;
528 for (t
= transports
; t
!= NULL
; t
= t
->next
)
530 transport_info
*ti
= t
->info
;
531 for (i
= 0; i
< *ti
->options_count
; i
++)
533 optionlist
* op
= &ti
->options
[i
];
534 if ((op
->type
& opt_mask
) != opt_stringptr
) continue;
535 if (p
== ( op
->type
& opt_public
537 : (char *)t
->options_block
539 + (long int)op
->value
)
550 /*************************************************
551 * Deal with an assignment to a macro *
552 *************************************************/
554 /* This function is called when a line that starts with an upper case letter is
555 encountered. The argument "line" should contain a complete logical line, and
556 start with the first letter of the macro name. The macro name and the
557 replacement text are extracted and stored. Redefinition of existing,
558 non-command line, macros is permitted using '==' instead of '='.
561 s points to the start of the logical line
567 read_macro_assignment(uschar
*s
)
573 macro_item
*mlast
= NULL
;
575 while (isalnum(*s
) || *s
== '_')
577 if (namelen
>= sizeof(name
) - 1)
578 log_write(0, LOG_PANIC_DIE
|LOG_CONFIG_IN
,
579 "macro name too long (maximum is " SIZE_T_FMT
" characters)", sizeof(name
) - 1);
580 name
[namelen
++] = *s
++;
584 while (isspace(*s
)) s
++;
586 log_write(0, LOG_PANIC_DIE
|LOG_CONFIG_IN
, "malformed macro definition");
593 while (isspace(*s
)) s
++;
595 /* If an existing macro of the same name was defined on the command line, we
596 just skip this definition. It's an error to attempt to redefine a macro without
597 redef set to TRUE, or to redefine a macro when it hasn't been defined earlier.
598 It is also an error to define a macro whose name begins with the name of a
599 previously defined macro. Note: it is documented that the other way round
602 for (m
= macros
; m
!= NULL
; m
= m
->next
)
604 int len
= Ustrlen(m
->name
);
606 if (Ustrcmp(m
->name
, name
) == 0)
608 if (!m
->command_line
&& !redef
)
609 log_write(0, LOG_CONFIG
|LOG_PANIC_DIE
, "macro \"%s\" is already "
610 "defined (use \"==\" if you want to redefine it", name
);
614 if (len
< namelen
&& Ustrstr(name
, m
->name
) != NULL
)
615 log_write(0, LOG_CONFIG
|LOG_PANIC_DIE
, "\"%s\" cannot be defined as "
616 "a macro because previously defined macro \"%s\" is a substring",
619 /* We cannot have this test, because it is documented that a substring
620 macro is permitted (there is even an example).
622 * if (len > namelen && Ustrstr(m->name, name) != NULL)
623 * log_write(0, LOG_CONFIG|LOG_PANIC_DIE, "\"%s\" cannot be defined as "
624 * "a macro because it is a substring of previously defined macro \"%s\"",
631 /* Check for an overriding command-line definition. */
633 if (m
!= NULL
&& m
->command_line
) return;
635 /* Redefinition must refer to an existing macro. */
640 log_write(0, LOG_CONFIG
|LOG_PANIC_DIE
, "can't redefine an undefined macro "
644 /* We have a new definition. The macro_item structure includes a final vector
645 called "name" which is one byte long. Thus, adding "namelen" gives us enough
646 room to store the "name" string. */
650 m
= store_get(sizeof(macro_item
) + namelen
);
651 if (macros
== NULL
) macros
= m
; else mlast
->next
= m
;
652 Ustrncpy(m
->name
, name
, namelen
);
653 m
->name
[namelen
] = 0;
655 m
->command_line
= FALSE
;
658 /* Set the value of the new or redefined macro */
660 m
->replacement
= string_copy(s
);
667 /*************************************************
668 * Read configuration line *
669 *************************************************/
671 /* A logical line of text is read from the configuration file into the big
672 buffer, taking account of macros, .includes, and continuations. The size of
673 big_buffer is increased if necessary. The count of configuration lines is
674 maintained. Physical input lines starting with # (ignoring leading white space,
675 and after macro replacement) and empty logical lines are always ignored.
676 Leading and trailing spaces are removed.
678 If we hit a line of the form "begin xxxx", the xxxx is placed in the
679 next_section vector, and the function returns NULL, indicating the end of a
680 configuration section. On end-of-file, NULL is returned with next_section
685 Returns: a pointer to the first non-blank in the line,
686 or NULL if eof or end of section is reached
690 get_config_line(void)
692 int startoffset
= 0; /* To first non-blank char in logical line */
693 int len
= 0; /* Of logical line so far */
699 /* Loop for handling continuation lines, skipping comments, and dealing with
704 if (Ufgets(big_buffer
+len
, big_buffer_size
-len
, config_file
) == NULL
)
706 if (config_file_stack
!= NULL
) /* EOF inside .include */
708 (void)fclose(config_file
);
709 config_file
= config_file_stack
->file
;
710 config_filename
= config_file_stack
->filename
;
711 config_lineno
= config_file_stack
->lineno
;
712 config_file_stack
= config_file_stack
->next
;
714 save_config_position(config_filename
, config_lineno
);
718 /* EOF at top level */
720 if (cstate_stack_ptr
>= 0)
721 log_write(0, LOG_PANIC_DIE
|LOG_CONFIG_IN
,
722 "Unexpected end of configuration file: .endif missing");
724 if (len
!= 0) break; /* EOF after continuation */
725 next_section
[0] = 0; /* EOF at start of logical line */
730 newlen
= len
+ Ustrlen(big_buffer
+ len
);
732 if (config_lines
&& config_lineno
== 1)
733 save_config_position(config_filename
, config_lineno
);
735 /* Handle pathologically long physical lines - yes, it did happen - by
736 extending big_buffer at this point. The code also copes with very long
739 while (newlen
== big_buffer_size
- 1 && big_buffer
[newlen
- 1] != '\n')
742 big_buffer_size
+= BIG_BUFFER_SIZE
;
743 newbuffer
= store_malloc(big_buffer_size
);
745 /* This use of strcpy is OK because we know that the string in the old
746 buffer is shorter than the new buffer. */
748 Ustrcpy(newbuffer
, big_buffer
);
749 store_free(big_buffer
);
750 big_buffer
= newbuffer
;
751 if (Ufgets(big_buffer
+newlen
, big_buffer_size
-newlen
, config_file
) == NULL
)
753 newlen
+= Ustrlen(big_buffer
+ newlen
);
756 /* Find the true start of the physical line - leading spaces are always
759 ss
= big_buffer
+ len
;
760 while (isspace(*ss
)) ss
++;
762 /* Process the physical line for macros. If this is the start of the logical
763 line, skip over initial text at the start of the line if it starts with an
764 upper case character followed by a sequence of name characters and an equals
765 sign, because that is the definition of a new macro, and we don't do
766 replacement therein. */
769 if (len
== 0 && isupper(*s
))
771 while (isalnum(*s
) || *s
== '_') s
++;
772 while (isspace(*s
)) s
++;
773 if (*s
!= '=') s
= ss
; /* Not a macro definition */
776 /* For each defined macro, scan the line (from after XXX= if present),
777 replacing all occurrences of the macro. */
780 for (m
= macros
; m
!= NULL
; m
= m
->next
)
785 while ((p
= Ustrstr(t
, m
->name
)) != NULL
)
788 int namelen
= Ustrlen(m
->name
);
789 int replen
= Ustrlen(m
->replacement
);
791 /* Expand the buffer if necessary */
793 while (newlen
- namelen
+ replen
+ 1 > big_buffer_size
)
795 int newsize
= big_buffer_size
+ BIG_BUFFER_SIZE
;
796 uschar
*newbuffer
= store_malloc(newsize
);
797 memcpy(newbuffer
, big_buffer
, newlen
+ 1);
798 p
= newbuffer
+ (p
- big_buffer
);
799 s
= newbuffer
+ (s
- big_buffer
);
800 ss
= newbuffer
+ (ss
- big_buffer
);
801 t
= newbuffer
+ (t
- big_buffer
);
802 big_buffer_size
= newsize
;
803 store_free(big_buffer
);
804 big_buffer
= newbuffer
;
807 /* Shuffle the remaining characters up or down in the buffer before
808 copying in the replacement text. Don't rescan the replacement for this
812 moveby
= replen
- namelen
;
815 memmove(p
+ replen
, pp
, (big_buffer
+ newlen
) - pp
+ 1);
818 Ustrncpy(p
, m
->replacement
, replen
);
824 /* An empty macro replacement at the start of a line could mean that ss no
825 longer points to the first non-blank character. */
827 while (isspace(*ss
)) ss
++;
829 /* Check for comment lines - these are physical lines. */
831 if (*ss
== '#') continue;
833 /* Handle conditionals, which are also applied to physical lines. Conditions
834 are of the form ".ifdef ANYTEXT" and are treated as true if any macro
835 expansion occured on the rest of the line. A preliminary test for the leading
836 '.' saves effort on most lines. */
842 /* Search the list of conditional directives */
844 for (i
= 0; i
< cond_list_size
; i
++)
847 cond_item
*c
= cond_list
+i
;
848 if (Ustrncmp(ss
+1, c
->name
, c
->namelen
) != 0) continue;
850 /* The following character must be white space or end of string */
852 n
= ss
[1 + c
->namelen
];
853 if (n
!= ' ' && n
!= 't' && n
!= '\n' && n
!= 0) break;
855 /* .ifdef and .ifndef push the current state onto the stack, then set
856 a new one from the table. Stack overflow is an error */
860 if (cstate_stack_ptr
>= CSTATE_STACK_SIZE
- 1)
861 log_write(0, LOG_PANIC_DIE
|LOG_CONFIG_IN
,
862 ".%s nested too deeply", c
->name
);
863 cstate_stack
[++cstate_stack_ptr
] = cstate
;
864 cstate
= next_cstate
[cstate
][macro_found
? c
->action1
: c
->action2
];
867 /* For any of the others, stack underflow is an error. The next state
868 comes either from the stack (.endif) or from the table. */
872 if (cstate_stack_ptr
< 0)
873 log_write(0, LOG_PANIC_DIE
|LOG_CONFIG_IN
,
874 ".%s without matching .ifdef", c
->name
);
875 cstate
= (c
->pushpop
< 0)? cstate_stack
[cstate_stack_ptr
--] :
876 next_cstate
[cstate
][macro_found
? c
->action1
: c
->action2
];
879 /* Having dealt with a directive, break the loop */
884 /* If we have handled a conditional directive, continue with the next
885 physical line. Otherwise, fall through. */
887 if (i
< cond_list_size
) continue;
890 /* If the conditional state is not 0 (actively using these lines), ignore
893 if (cstate
!= 0) continue; /* Conditional skip */
895 /* Handle .include lines - these are also physical lines. */
897 if (Ustrncmp(ss
, ".include", 8) == 0 &&
899 (Ustrncmp(ss
+8, "_if_exists", 10) == 0 && isspace(ss
[18]))))
902 int include_if_exists
= isspace(ss
[8])? 0 : 10;
903 config_file_item
*save
;
906 ss
+= 9 + include_if_exists
;
907 while (isspace(*ss
)) ss
++;
908 t
= ss
+ Ustrlen(ss
);
909 while (t
> ss
&& isspace(t
[-1])) t
--;
910 if (*ss
== '\"' && t
[-1] == '\"')
918 log_write(0, LOG_PANIC_DIE
|LOG_CONFIG_IN
, ".include specifies a non-"
919 "absolute path \"%s\"", ss
);
921 if (include_if_exists
!= 0 && (Ustat(ss
, &statbuf
) != 0)) continue;
924 save_config_position(config_filename
, config_lineno
);
925 save
= store_get(sizeof(config_file_item
));
926 save
->next
= config_file_stack
;
927 config_file_stack
= save
;
928 save
->file
= config_file
;
929 save
->filename
= config_filename
;
930 save
->lineno
= config_lineno
;
932 config_file
= Ufopen(ss
, "rb");
933 if (config_file
== NULL
)
934 log_write(0, LOG_PANIC_DIE
|LOG_CONFIG_IN
, "failed to open included "
935 "configuration file %s", ss
);
936 config_filename
= string_copy(ss
);
941 /* If this is the start of the logical line, remember where the non-blank
942 data starts. Otherwise shuffle down continuation lines to remove leading
946 startoffset
= ss
- big_buffer
;
949 s
= big_buffer
+ len
;
952 memmove(s
, ss
, (newlen
- len
) - (ss
- s
) + 1);
957 /* Accept the new addition to the line. Remove trailing white space. */
960 while (len
> 0 && isspace(big_buffer
[len
-1])) len
--;
963 /* We are done if the line does not end in backslash and contains some data.
964 Empty logical lines are ignored. For continuations, remove the backslash and
965 go round the loop to read the continuation line. */
969 if (big_buffer
[len
-1] != '\\') break; /* End of logical line */
970 big_buffer
[--len
] = 0; /* Remove backslash */
972 } /* Loop for reading multiple physical lines */
974 /* We now have a logical line. Test for the end of a configuration section (or,
975 more accurately, for the start of the next section). Place the name of the next
976 section in next_section, and return NULL. If the name given is longer than
977 next_section, truncate it. It will be unrecognized later, because all the known
978 section names do fit. Leave space for pluralizing. */
980 s
= big_buffer
+ startoffset
; /* First non-space character */
985 if (strncmpic(s
, US
"begin ", 6) == 0)
988 while (isspace(*s
)) s
++;
989 if (big_buffer
+ len
- s
> sizeof(next_section
) - 2)
990 s
[sizeof(next_section
) - 2] = 0;
991 Ustrcpy(next_section
, s
);
995 /* Return the first non-blank character. */
1002 /*************************************************
1004 *************************************************/
1006 /* The yield is the pointer to the next uschar. Names longer than the
1007 output space are silently truncated. This function is also used from acl.c when
1011 name where to put the name
1015 Returns: new input pointer
1019 readconf_readname(uschar
*name
, int len
, uschar
*s
)
1022 while (isspace(*s
)) s
++;
1025 while (isalnum(*s
) || *s
== '_')
1027 if (p
< len
-1) name
[p
++] = *s
;
1032 while (isspace(*s
)) s
++;
1039 /*************************************************
1040 * Read a time value *
1041 *************************************************/
1043 /* This function is also called from outside, to read argument
1044 time values. The format of a time value is:
1046 [<n>w][<n>d][<n>h][<n>m][<n>s]
1048 as long as at least one is present. If a format error is encountered,
1049 return a negative value. The value must be terminated by the given
1054 terminator required terminating character
1055 return_msec if TRUE, allow fractional seconds and return milliseconds
1057 Returns: the time value, or -1 on syntax error
1058 value is seconds if return_msec is FALSE
1059 value is milliseconds if return_msec is TRUE
1063 readconf_readtime(const uschar
*s
, int terminator
, BOOL return_msec
)
1071 if (!isdigit(*s
)) return -1;
1072 (void)sscanf(CCS s
, "%d%n", &value
, &count
);
1077 case 'w': value
*= 7;
1078 case 'd': value
*= 24;
1079 case 'h': value
*= 60;
1080 case 'm': value
*= 60;
1085 if (!return_msec
) return -1;
1086 (void)sscanf(CCS s
, "%lf%n", &fraction
, &count
);
1088 if (*s
++ != 's') return -1;
1089 yield
+= (int)(fraction
* 1000.0);
1095 if (return_msec
) value
*= 1000;
1097 if (*s
== terminator
) return yield
;
1099 /* Control never reaches here. */
1104 /*************************************************
1105 * Read a fixed point value *
1106 *************************************************/
1108 /* The value is returned *1000
1112 terminator required terminator
1114 Returns: the value, or -1 on error
1118 readconf_readfixed(const uschar
*s
, int terminator
)
1122 if (!isdigit(*s
)) return -1;
1123 (void)sscanf(CS s
, "%d%n", &value
, &count
);
1125 yield
= value
* 1000;
1129 while (isdigit((*(++s
))))
1131 yield
+= (*s
- '0') * m
;
1136 return (*s
== terminator
)? yield
: (-1);
1141 /*************************************************
1142 * Find option in list *
1143 *************************************************/
1145 /* The lists are always in order, so binary chop can be used.
1148 name the option name to search for
1149 ol the first entry in the option list
1150 last one more than the offset of the last entry in the option list
1152 Returns: pointer to an option entry, or NULL if not found
1156 find_option(uschar
*name
, optionlist
*ol
, int last
)
1159 while (last
> first
)
1161 int middle
= (first
+ last
)/2;
1162 int c
= Ustrcmp(name
, ol
[middle
].name
);
1163 if (c
== 0) return ol
+ middle
;
1164 else if (c
> 0) first
= middle
+ 1;
1172 /*************************************************
1173 * Find a set flag in option list *
1174 *************************************************/
1176 /* Because some versions of Unix make no restrictions on the values of uids and
1177 gids (even negative ones), we cannot represent "unset" by a special value.
1178 There is therefore a separate boolean variable for each one indicating whether
1179 a value is set or not. This function returns a pointer to the boolean, given
1180 the original option name. It is a major disaster if the flag cannot be found.
1183 name the name of the uid or gid option
1184 oltop points to the start of the relevant option list
1185 last one more than the offset of the last item in the option list
1186 data_block NULL when reading main options => data values in the option
1187 list are absolute addresses; otherwise they are byte offsets
1188 in data_block (used for driver options)
1190 Returns: a pointer to the boolean flag.
1194 get_set_flag(uschar
*name
, optionlist
*oltop
, int last
, void *data_block
)
1198 sprintf(CS name2
, "*set_%.50s", name
);
1199 ol
= find_option(name2
, oltop
, last
);
1200 if (ol
== NULL
) log_write(0, LOG_MAIN
|LOG_PANIC_DIE
,
1201 "Exim internal error: missing set flag for %s", name
);
1202 return (data_block
== NULL
)? (BOOL
*)(ol
->value
) :
1203 (BOOL
*)((uschar
*)data_block
+ (long int)(ol
->value
));
1209 /*************************************************
1210 * Output extra characters message and die *
1211 *************************************************/
1213 /* Called when an option line has junk on the end. Sometimes this is because
1214 the sysadmin thinks comments are permitted.
1217 s points to the extra characters
1218 t1..t3 strings to insert in the log message
1220 Returns: doesn't return; dies
1224 extra_chars_error(const uschar
*s
, const uschar
*t1
, const uschar
*t2
, const uschar
*t3
)
1226 uschar
*comment
= US
"";
1227 if (*s
== '#') comment
= US
" (# is comment only at line start)";
1228 log_write(0, LOG_PANIC_DIE
|LOG_CONFIG_IN
,
1229 "extra characters follow %s%s%s%s", t1
, t2
, t3
, comment
);
1234 /*************************************************
1235 * Read rewrite information *
1236 *************************************************/
1238 /* Each line of rewrite information contains:
1240 . A complete address in the form user@domain, possibly with
1241 leading * for each part; or alternatively, a regex.
1243 . A replacement string (which will be expanded).
1245 . An optional sequence of one-letter flags, indicating which
1246 headers etc. to apply this rule to.
1248 All this is decoded and placed into a control block. The OR of the flags is
1249 maintained in a common word.
1252 p points to the string that makes up the rule
1253 existflags points to the overall flag word
1254 isglobal TRUE if reading global rewrite rules
1256 Returns: the control block for the parsed rule.
1259 static rewrite_rule
*
1260 readconf_one_rewrite(const uschar
*p
, int *existflags
, BOOL isglobal
)
1262 rewrite_rule
*next
= store_get(sizeof(rewrite_rule
));
1265 next
->key
= string_dequote(&p
);
1267 while (isspace(*p
)) p
++;
1269 log_write(0, LOG_PANIC_DIE
|LOG_CONFIG_IN
,
1270 "missing rewrite replacement string");
1273 next
->replacement
= string_dequote(&p
);
1275 while (*p
!= 0) switch (*p
++)
1277 case ' ': case '\t': break;
1279 case 'q': next
->flags
|= rewrite_quit
; break;
1280 case 'w': next
->flags
|= rewrite_whole
; break;
1282 case 'h': next
->flags
|= rewrite_all_headers
; break;
1283 case 's': next
->flags
|= rewrite_sender
; break;
1284 case 'f': next
->flags
|= rewrite_from
; break;
1285 case 't': next
->flags
|= rewrite_to
; break;
1286 case 'c': next
->flags
|= rewrite_cc
; break;
1287 case 'b': next
->flags
|= rewrite_bcc
; break;
1288 case 'r': next
->flags
|= rewrite_replyto
; break;
1290 case 'E': next
->flags
|= rewrite_all_envelope
; break;
1291 case 'F': next
->flags
|= rewrite_envfrom
; break;
1292 case 'T': next
->flags
|= rewrite_envto
; break;
1294 case 'Q': next
->flags
|= rewrite_qualify
; break;
1295 case 'R': next
->flags
|= rewrite_repeat
; break;
1298 next
->flags
|= rewrite_smtp
;
1299 if (next
->key
[0] != '^' && Ustrncmp(next
->key
, "\\N^", 3) != 0)
1300 log_write(0, LOG_PANIC_DIE
|LOG_CONFIG_IN
,
1301 "rewrite rule has the S flag but is not a regular expression");
1305 log_write(0, LOG_PANIC_DIE
|LOG_CONFIG_IN
,
1306 "unknown rewrite flag character '%c' "
1307 "(could be missing quotes round replacement item)", p
[-1]);
1311 /* If no action flags are set, set all the "normal" rewrites. */
1313 if ((next
->flags
& (rewrite_all
| rewrite_smtp
)) == 0)
1314 next
->flags
|= isglobal
? rewrite_all
: rewrite_all_headers
;
1316 /* Remember which exist, for optimization, and return the rule */
1318 *existflags
|= next
->flags
;
1325 /*************************************************
1326 * Read global rewrite information *
1327 *************************************************/
1329 /* Each line is a single rewrite rule; it is parsed into a control block
1330 by readconf_one_rewrite(), and its flags are ORed into the global flag
1331 word rewrite_existflags. */
1334 readconf_rewrites(void)
1336 rewrite_rule
**chain
= &global_rewrite_rules
;
1339 while ((p
= get_config_line()) != NULL
)
1341 rewrite_rule
*next
= readconf_one_rewrite(p
, &rewrite_existflags
, TRUE
);
1343 chain
= &(next
->next
);
1349 /*************************************************
1351 *************************************************/
1353 /* Strings are read into the normal store pool. As long we aren't too
1354 near the end of the current block, the string will just use what is necessary
1355 on the top of the stacking pool, because string_cat() uses the extension
1359 s the rest of the input line
1360 name the option name (for errors)
1362 Returns: pointer to the string
1366 read_string(const uschar
*s
, const uschar
*name
)
1371 if (*s
!= '\"') return string_copy(s
);
1374 yield
= string_dequote(&s
);
1376 if (s
== ss
+1 || s
[-1] != '\"')
1377 log_write(0, LOG_PANIC_DIE
|LOG_CONFIG_IN
,
1378 "missing quote at end of string value for %s", name
);
1380 if (*s
!= 0) extra_chars_error(s
, US
"string value for ", name
, US
"");
1386 /*************************************************
1387 * Custom-handler options *
1388 *************************************************/
1390 fn_smtp_receive_timeout(const uschar
* name
, const uschar
* str
)
1393 smtp_receive_timeout_s
= string_copy(str
);
1396 /* "smtp_receive_timeout", opt_time, &smtp_receive_timeout */
1397 smtp_receive_timeout
= readconf_readtime(str
, 0, FALSE
);
1398 if (smtp_receive_timeout
< 0)
1399 log_write(0, LOG_PANIC_DIE
|LOG_CONFIG_IN
, "invalid time value for %s",
1404 /*************************************************
1405 * Handle option line *
1406 *************************************************/
1408 /* This function is called from several places to process a line containing the
1409 setting of an option. The first argument is the line to be decoded; it has been
1410 checked not to be empty and not to start with '#'. Trailing newlines and white
1411 space have been removed. The second argument is a pointer to the list of
1412 variable names that are to be recognized, together with their types and
1413 locations, and the third argument gives the number of entries in the list.
1415 The fourth argument is a pointer to a data block. If it is NULL, then the data
1416 values in the options list are absolute addresses. Otherwise, they are byte
1417 offsets in the data block.
1419 String option data may continue onto several lines; this function reads further
1420 data from config_file if necessary.
1422 The yield of this function is normally zero. If a string continues onto
1423 multiple lines, then the data value is permitted to be followed by a comma
1424 or a semicolon (for use in drivers) and the yield is that character.
1427 buffer contains the configuration line to be handled
1428 oltop points to the start of the relevant option list
1429 last one more than the offset of the last item in the option list
1430 data_block NULL when reading main options => data values in the option
1431 list are absolute addresses; otherwise they are byte offsets
1432 in data_block when they have opt_public set; otherwise
1433 they are byte offsets in data_block->options_block.
1434 unknown_txt format string to use in panic message for unknown option;
1435 must contain %s for option name
1436 if given as NULL, don't panic on unknown option
1438 Returns: TRUE if an option was read successfully,
1439 FALSE false for an unknown option if unknown_txt == NULL,
1440 otherwise panic and die on an unknown option
1444 readconf_handle_option(uschar
*buffer
, optionlist
*oltop
, int last
,
1445 void *data_block
, uschar
*unknown_txt
)
1449 int n
, count
, type
, value
;
1453 BOOL boolvalue
= TRUE
;
1454 BOOL freesptr
= TRUE
;
1455 optionlist
*ol
, *ol2
;
1459 uschar
*inttype
= US
"";
1462 uschar
*saved_condition
, *strtemp
;
1463 uschar
**str_target
;
1467 /* There may be leading spaces; thereafter, we expect an option name starting
1470 while (isspace(*s
)) s
++;
1472 log_write(0, LOG_PANIC_DIE
|LOG_CONFIG_IN
, "option setting expected: %s", s
);
1474 /* Read the name of the option, and skip any subsequent white space. If
1475 it turns out that what we read was "hide", set the flag indicating that
1476 this is a secure option, and loop to read the next word. */
1478 for (n
= 0; n
< 2; n
++)
1480 while (isalnum(*s
) || *s
== '_')
1482 if (ptr
< sizeof(name
)-1) name
[ptr
++] = *s
;
1486 while (isspace(*s
)) s
++;
1487 if (Ustrcmp(name
, "hide") != 0) break;
1488 issecure
= opt_secure
;
1492 /* Deal with "no_" or "not_" here for booleans */
1494 if (Ustrncmp(name
, "no_", 3) == 0)
1500 if (Ustrncmp(name
, "not_", 4) == 0)
1506 /* Search the list for the given name. A non-existent name, or an option that
1507 is set twice, is a disaster. */
1509 ol
= find_option(name
+ offset
, oltop
, last
);
1513 if (unknown_txt
== NULL
) return FALSE
;
1514 log_write(0, LOG_PANIC_DIE
|LOG_CONFIG_IN
, CS unknown_txt
, name
);
1517 if ((ol
->type
& opt_set
) && !(ol
->type
& (opt_rep_con
| opt_rep_str
)))
1518 log_write(0, LOG_PANIC_DIE
|LOG_CONFIG_IN
,
1519 "\"%s\" option set for the second time", name
);
1521 ol
->type
|= opt_set
| issecure
;
1522 type
= ol
->type
& opt_mask
;
1524 /* Types with data values must be followed by '='; the "no[t]_" prefix
1525 applies only to boolean values. */
1527 if (type
< opt_bool
|| type
> opt_bool_last
)
1530 log_write(0, LOG_PANIC_DIE
|LOG_CONFIG_IN
,
1531 "negation prefix applied to a non-boolean option");
1533 log_write(0, LOG_PANIC_DIE
|LOG_CONFIG_IN
,
1534 "unexpected end of line (data missing) after %s", name
);
1536 log_write(0, LOG_PANIC_DIE
|LOG_CONFIG_IN
, "missing \"=\" after %s", name
);
1539 /* If a boolean wasn't preceded by "no[t]_" it can be followed by = and
1540 true/false/yes/no, or, in the case of opt_expand_bool, a general string that
1541 ultimately expands to one of those values. */
1543 else if (*s
!= 0 && (offset
!= 0 || *s
!= '='))
1544 extra_chars_error(s
, US
"boolean option ", name
, US
"");
1546 /* Skip white space after = */
1548 if (*s
== '=') while (isspace((*(++s
))));
1550 /* If there is a data block and the opt_public flag is not set, change
1551 the data block pointer to the private options block. */
1553 if (data_block
!= NULL
&& (ol
->type
& opt_public
) == 0)
1554 data_block
= (void *)(((driver_instance
*)data_block
)->options_block
);
1556 /* Now get the data according to the type. */
1560 /* If a string value is not enclosed in quotes, it consists of
1561 the rest of the current line, verbatim. Otherwise, string escapes
1564 A transport is specified as a string, which is then looked up in the
1565 list of transports. A search type is specified as one of a number of
1568 A set or rewrite rules for a driver is specified as a string, which is
1569 then parsed into a suitable chain of control blocks.
1571 Uids and gids are specified as strings which are then looked up in the
1572 passwd file. Lists of uids and gids are similarly specified as colon-
1573 separated strings. */
1578 case opt_expand_uid
:
1579 case opt_expand_gid
:
1584 reset_point
= sptr
= read_string(s
, name
);
1586 /* Having read a string, we now have several different ways of using it,
1587 depending on the data type, so do another switch. If keeping the actual
1588 string is not required (because it is interpreted), freesptr is set TRUE,
1589 and at the end we reset the pool. */
1593 /* If this was a string, set the variable to point to the new string,
1594 and set the flag so its store isn't reclaimed. If it was a list of rewrite
1595 rules, we still keep the string (for printing), and parse the rules into a
1596 control block and flags word. */
1599 if (data_block
== NULL
)
1600 str_target
= (uschar
**)(ol
->value
);
1602 str_target
= (uschar
**)((uschar
*)data_block
+ (long int)(ol
->value
));
1603 if (ol
->type
& opt_rep_con
)
1605 /* We already have a condition, we're conducting a crude hack to let
1606 multiple condition rules be chained together, despite storing them in
1608 saved_condition
= *str_target
;
1609 strtemp
= string_sprintf("${if and{{bool_lax{%s}}{bool_lax{%s}}}}",
1610 saved_condition
, sptr
);
1611 *str_target
= string_copy_malloc(strtemp
);
1612 /* TODO(pdp): there is a memory leak here and just below
1613 when we set 3 or more conditions; I still don't
1614 understand the store mechanism enough to know
1615 what's the safe way to free content from an earlier store.
1616 AFAICT, stores stack, so freeing an early stored item also stores
1617 all data alloc'd after it. If we knew conditions were adjacent,
1618 we could survive that, but we don't. So I *think* we need to take
1619 another bit from opt_type to indicate "malloced"; this seems like
1620 quite a hack, especially for this one case. It also means that
1621 we can't ever reclaim the store from the *first* condition.
1623 Because we only do this once, near process start-up, I'm prepared to
1624 let this slide for the time being, even though it rankles. */
1626 else if (ol
->type
& opt_rep_str
)
1628 uschar sep_o
= Ustrncmp(name
, "headers_add", 11)==0 ? '\n' : ':';
1629 int sep_i
= -(int)sep_o
;
1630 const uschar
* list
= sptr
;
1632 uschar
* list_o
= *str_target
;
1634 while ((s
= string_nextinlist(&list
, &sep_i
, NULL
, 0)))
1635 list_o
= string_append_listele(list_o
, sep_o
, s
);
1637 *str_target
= string_copy_malloc(list_o
);
1647 if (data_block
== NULL
)
1648 *((uschar
**)(ol
->value
)) = sptr
;
1650 *((uschar
**)((uschar
*)data_block
+ (long int)(ol
->value
))) = sptr
;
1652 if (type
== opt_rewrite
)
1657 rewrite_rule
**chain
;
1660 sprintf(CS name2
, "*%.50s_rules", name
);
1661 ol2
= find_option(name2
, oltop
, last
);
1662 sprintf(CS name2
, "*%.50s_flags", name
);
1663 ol3
= find_option(name2
, oltop
, last
);
1665 if (ol2
== NULL
|| ol3
== NULL
)
1666 log_write(0, LOG_PANIC_DIE
|LOG_CONFIG_IN
,
1667 "rewrite rules not available for driver");
1669 if (data_block
== NULL
)
1671 chain
= (rewrite_rule
**)(ol2
->value
);
1672 flagptr
= (int *)(ol3
->value
);
1676 chain
= (rewrite_rule
**)((uschar
*)data_block
+ (long int)(ol2
->value
));
1677 flagptr
= (int *)((uschar
*)data_block
+ (long int)(ol3
->value
));
1680 while ((p
= string_nextinlist(CUSS
&sptr
, &sep
, big_buffer
, BIG_BUFFER_SIZE
)))
1682 rewrite_rule
*next
= readconf_one_rewrite(p
, flagptr
, FALSE
);
1684 chain
= &(next
->next
);
1687 if ((*flagptr
& (rewrite_all_envelope
| rewrite_smtp
)) != 0)
1688 log_write(0, LOG_PANIC_DIE
|LOG_CONFIG_IN
, "rewrite rule specifies a "
1689 "non-header rewrite - not allowed at transport time -");
1693 /* If it was an expanded uid, see if there is any expansion to be
1694 done by checking for the presence of a $ character. If there is, save it
1695 in the corresponding *expand_user option field. Otherwise, fall through
1696 to treat it as a fixed uid. Ensure mutual exclusivity of the two kinds
1699 case opt_expand_uid
:
1700 sprintf(CS name2
, "*expand_%.50s", name
);
1701 ol2
= find_option(name2
, oltop
, last
);
1704 uschar
*ss
= (Ustrchr(sptr
, '$') != NULL
)? sptr
: NULL
;
1706 if (data_block
== NULL
)
1707 *((uschar
**)(ol2
->value
)) = ss
;
1709 *((uschar
**)((uschar
*)data_block
+ (long int)(ol2
->value
))) = ss
;
1713 *(get_set_flag(name
, oltop
, last
, data_block
)) = FALSE
;
1719 /* Look up a fixed uid, and also make use of the corresponding gid
1720 if a passwd entry is returned and the gid has not been set. */
1723 if (!route_finduser(sptr
, &pw
, &uid
))
1724 log_write(0, LOG_PANIC_DIE
|LOG_CONFIG_IN
, "user %s was not found", sptr
);
1725 if (data_block
== NULL
)
1726 *((uid_t
*)(ol
->value
)) = uid
;
1728 *((uid_t
*)((uschar
*)data_block
+ (long int)(ol
->value
))) = uid
;
1730 /* Set the flag indicating a fixed value is set */
1732 *(get_set_flag(name
, oltop
, last
, data_block
)) = TRUE
;
1734 /* Handle matching gid if we have a passwd entry: done by finding the
1735 same name with terminating "user" changed to "group"; if not found,
1736 ignore. Also ignore if the value is already set. */
1738 if (pw
== NULL
) break;
1739 Ustrcpy(name
+Ustrlen(name
)-4, "group");
1740 ol2
= find_option(name
, oltop
, last
);
1741 if (ol2
!= NULL
&& ((ol2
->type
& opt_mask
) == opt_gid
||
1742 (ol2
->type
& opt_mask
) == opt_expand_gid
))
1744 BOOL
*set_flag
= get_set_flag(name
, oltop
, last
, data_block
);
1747 if (data_block
== NULL
)
1748 *((gid_t
*)(ol2
->value
)) = pw
->pw_gid
;
1750 *((gid_t
*)((uschar
*)data_block
+ (long int)(ol2
->value
))) = pw
->pw_gid
;
1756 /* If it was an expanded gid, see if there is any expansion to be
1757 done by checking for the presence of a $ character. If there is, save it
1758 in the corresponding *expand_user option field. Otherwise, fall through
1759 to treat it as a fixed gid. Ensure mutual exclusivity of the two kinds
1762 case opt_expand_gid
:
1763 sprintf(CS name2
, "*expand_%.50s", name
);
1764 ol2
= find_option(name2
, oltop
, last
);
1767 uschar
*ss
= (Ustrchr(sptr
, '$') != NULL
)? sptr
: NULL
;
1769 if (data_block
== NULL
)
1770 *((uschar
**)(ol2
->value
)) = ss
;
1772 *((uschar
**)((uschar
*)data_block
+ (long int)(ol2
->value
))) = ss
;
1776 *(get_set_flag(name
, oltop
, last
, data_block
)) = FALSE
;
1782 /* Handle freestanding gid */
1785 if (!route_findgroup(sptr
, &gid
))
1786 log_write(0, LOG_PANIC_DIE
|LOG_CONFIG_IN
, "group %s was not found", sptr
);
1787 if (data_block
== NULL
)
1788 *((gid_t
*)(ol
->value
)) = gid
;
1790 *((gid_t
*)((uschar
*)data_block
+ (long int)(ol
->value
))) = gid
;
1791 *(get_set_flag(name
, oltop
, last
, data_block
)) = TRUE
;
1794 /* If it was a uid list, look up each individual entry, and build
1795 a vector of uids, with a count in the first element. Put the vector
1796 in malloc store so we can free the string. (We are reading into
1797 permanent store already.) */
1805 const uschar
*op
= expand_string (sptr
);
1808 log_write(0, LOG_PANIC_DIE
|LOG_CONFIG_IN
, "failed to expand %s: %s",
1809 name
, expand_string_message
);
1812 if (*p
!= 0) count
++;
1813 while (*p
!= 0) if (*p
++ == ':' && *p
!= 0) count
++;
1814 list
= store_malloc(count
*sizeof(uid_t
));
1815 list
[ptr
++] = (uid_t
)(count
- 1);
1817 if (data_block
== NULL
)
1818 *((uid_t
**)(ol
->value
)) = list
;
1820 *((uid_t
**)((uschar
*)data_block
+ (long int)(ol
->value
))) = list
;
1826 (void)string_nextinlist(&p
, &sep
, big_buffer
, BIG_BUFFER_SIZE
);
1827 if (!route_finduser(big_buffer
, NULL
, &uid
))
1828 log_write(0, LOG_PANIC_DIE
|LOG_CONFIG_IN
, "user %s was not found",
1835 /* If it was a gid list, look up each individual entry, and build
1836 a vector of gids, with a count in the first element. Put the vector
1837 in malloc store so we can free the string. (We are reading into permanent
1846 const uschar
*op
= expand_string (sptr
);
1849 log_write(0, LOG_PANIC_DIE
|LOG_CONFIG_IN
, "failed to expand %s: %s",
1850 name
, expand_string_message
);
1853 if (*p
!= 0) count
++;
1854 while (*p
!= 0) if (*p
++ == ':' && *p
!= 0) count
++;
1855 list
= store_malloc(count
*sizeof(gid_t
));
1856 list
[ptr
++] = (gid_t
)(count
- 1);
1858 if (data_block
== NULL
)
1859 *((gid_t
**)(ol
->value
)) = list
;
1861 *((gid_t
**)((uschar
*)data_block
+ (long int)(ol
->value
))) = list
;
1867 (void)string_nextinlist(&p
, &sep
, big_buffer
, BIG_BUFFER_SIZE
);
1868 if (!route_findgroup(big_buffer
, &gid
))
1869 log_write(0, LOG_PANIC_DIE
|LOG_CONFIG_IN
, "group %s was not found",
1877 /* Release store if the value of the string doesn't need to be kept. */
1879 if (freesptr
) store_reset(reset_point
);
1882 /* Expanded boolean: if no characters follow, or if there are no dollar
1883 characters, this is a fixed-valued boolean, and we fall through. Otherwise,
1884 save the string for later expansion in the alternate place. */
1886 case opt_expand_bool
:
1887 if (*s
!= 0 && Ustrchr(s
, '$') != 0)
1889 sprintf(CS name2
, "*expand_%.50s", name
);
1890 ol2
= find_option(name2
, oltop
, last
);
1893 reset_point
= sptr
= read_string(s
, name
);
1894 if (data_block
== NULL
)
1895 *((uschar
**)(ol2
->value
)) = sptr
;
1897 *((uschar
**)((uschar
*)data_block
+ (long int)(ol2
->value
))) = sptr
;
1904 /* Boolean: if no characters follow, the value is boolvalue. Otherwise
1905 look for yes/not/true/false. Some booleans are stored in a single bit in
1906 a single int. There's a special fudge for verify settings; without a suffix
1907 they set both xx_sender and xx_recipient. The table points to the sender
1908 value; search subsequently for the recipient. There's another special case:
1909 opt_bool_set also notes when a boolean has been set. */
1913 case opt_bool_verify
:
1917 s
= readconf_readname(name2
, 64, s
);
1918 if (strcmpic(name2
, US
"true") == 0 || strcmpic(name2
, US
"yes") == 0)
1920 else if (strcmpic(name2
, US
"false") == 0 || strcmpic(name2
, US
"no") == 0)
1922 else log_write(0, LOG_PANIC_DIE
|LOG_CONFIG_IN
,
1923 "\"%s\" is not a valid value for the \"%s\" option", name2
, name
);
1924 if (*s
!= 0) extra_chars_error(s
, string_sprintf("\"%s\" ", name2
),
1925 US
"for boolean option ", name
);
1928 /* Handle single-bit type. */
1930 if (type
== opt_bit
)
1932 int bit
= 1 << ((ol
->type
>> 16) & 31);
1933 int *ptr
= (data_block
== NULL
)?
1934 (int *)(ol
->value
) :
1935 (int *)((uschar
*)data_block
+ (long int)ol
->value
);
1936 if (boolvalue
) *ptr
|= bit
; else *ptr
&= ~bit
;
1940 /* Handle full BOOL types */
1942 if (data_block
== NULL
)
1943 *((BOOL
*)(ol
->value
)) = boolvalue
;
1945 *((BOOL
*)((uschar
*)data_block
+ (long int)(ol
->value
))) = boolvalue
;
1949 if (type
== opt_bool_verify
)
1951 sprintf(CS name2
, "%.50s_recipient", name
+ offset
);
1952 ol2
= find_option(name2
, oltop
, last
);
1955 if (data_block
== NULL
)
1956 *((BOOL
*)(ol2
->value
)) = boolvalue
;
1958 *((BOOL
*)((uschar
*)data_block
+ (long int)(ol2
->value
))) = boolvalue
;
1962 /* Note that opt_bool_set type is set, if there is somewhere to do so */
1964 else if (type
== opt_bool_set
)
1966 sprintf(CS name2
, "*set_%.50s", name
+ offset
);
1967 ol2
= find_option(name2
, oltop
, last
);
1970 if (data_block
== NULL
)
1971 *((BOOL
*)(ol2
->value
)) = TRUE
;
1973 *((BOOL
*)((uschar
*)data_block
+ (long int)(ol2
->value
))) = TRUE
;
1982 inttype
= US
"octal ";
1984 /* Integer: a simple(ish) case; allow octal and hex formats, and
1985 suffixes K and M. The different types affect output, not input. */
1994 lvalue
= strtol(CS s
, CSS
&endptr
, intbase
);
1997 log_write(0, LOG_PANIC_DIE
|LOG_CONFIG_IN
, "%sinteger expected for %s",
2000 if (errno
!= ERANGE
)
2002 if (tolower(*endptr
) == 'k')
2004 if (lvalue
> INT_MAX
/1024 || lvalue
< INT_MIN
/1024) errno
= ERANGE
;
2005 else lvalue
*= 1024;
2008 else if (tolower(*endptr
) == 'm')
2010 if (lvalue
> INT_MAX
/(1024*1024) || lvalue
< INT_MIN
/(1024*1024))
2012 else lvalue
*= 1024*1024;
2017 if (errno
== ERANGE
|| lvalue
> INT_MAX
|| lvalue
< INT_MIN
)
2018 log_write(0, LOG_PANIC_DIE
|LOG_CONFIG_IN
,
2019 "absolute value of integer \"%s\" is too large (overflow)", s
);
2021 while (isspace(*endptr
)) endptr
++;
2023 extra_chars_error(endptr
, inttype
, US
"integer value for ", name
);
2025 value
= (int)lvalue
;
2028 if (data_block
== NULL
)
2029 *((int *)(ol
->value
)) = value
;
2031 *((int *)((uschar
*)data_block
+ (long int)(ol
->value
))) = value
;
2034 /* Integer held in K: again, allow octal and hex formats, and suffixes K and
2041 value
= strtol(CS s
, CSS
&endptr
, intbase
);
2044 log_write(0, LOG_PANIC_DIE
|LOG_CONFIG_IN
, "%sinteger expected for %s",
2047 if (errno
!= ERANGE
)
2049 if (tolower(*endptr
) == 'm')
2051 if (value
> INT_MAX
/1024 || value
< INT_MIN
/1024) errno
= ERANGE
;
2055 else if (tolower(*endptr
) == 'k')
2061 value
= (value
+ 512)/1024;
2065 if (errno
== ERANGE
) log_write(0, LOG_PANIC_DIE
|LOG_CONFIG_IN
,
2066 "absolute value of integer \"%s\" is too large (overflow)", s
);
2068 while (isspace(*endptr
)) endptr
++;
2070 extra_chars_error(endptr
, inttype
, US
"integer value for ", name
);
2073 if (data_block
== NULL
)
2074 *((int *)(ol
->value
)) = value
;
2076 *((int *)((uschar
*)data_block
+ (long int)(ol
->value
))) = value
;
2079 /* Fixed-point number: held to 3 decimal places. */
2082 if (sscanf(CS s
, "%d%n", &value
, &count
) != 1)
2083 log_write(0, LOG_PANIC_DIE
|LOG_CONFIG_IN
,
2084 "fixed-point number expected for %s", name
);
2086 if (value
< 0) log_write(0, LOG_PANIC_DIE
|LOG_CONFIG_IN
,
2087 "integer \"%s\" is too large (overflow)", s
);
2091 if (value
< 0) log_write(0, LOG_PANIC_DIE
|LOG_CONFIG_IN
,
2092 "integer \"%s\" is too large (overflow)", s
);
2094 if (s
[count
] == '.')
2097 while (isdigit(s
[++count
]))
2099 value
+= (s
[count
] - '0') * d
;
2104 while (isspace(s
[count
])) count
++;
2107 extra_chars_error(s
+count
, US
"fixed-point value for ", name
, US
"");
2109 if (data_block
== NULL
)
2110 *((int *)(ol
->value
)) = value
;
2112 *((int *)((uschar
*)data_block
+ (long int)(ol
->value
))) = value
;
2115 /* There's a special routine to read time values. */
2118 value
= readconf_readtime(s
, 0, FALSE
);
2120 log_write(0, LOG_PANIC_DIE
|LOG_CONFIG_IN
, "invalid time value for %s",
2122 if (data_block
== NULL
)
2123 *((int *)(ol
->value
)) = value
;
2125 *((int *)((uschar
*)data_block
+ (long int)(ol
->value
))) = value
;
2128 /* A time list is a list of colon-separated times, with the first
2129 element holding the size of the list and the second the number of
2135 int *list
= (data_block
== NULL
)?
2136 (int *)(ol
->value
) :
2137 (int *)((uschar
*)data_block
+ (long int)(ol
->value
));
2139 if (*s
!= 0) for (count
= 1; count
<= list
[0] - 2; count
++)
2142 uschar
*snext
= Ustrchr(s
, ':');
2146 while (ss
> s
&& isspace(ss
[-1])) ss
--;
2149 value
= readconf_readtime(s
, terminator
, FALSE
);
2151 log_write(0, LOG_PANIC_DIE
|LOG_CONFIG_IN
, "invalid time value for %s",
2153 if (count
> 1 && value
<= list
[count
])
2154 log_write(0, LOG_PANIC_DIE
|LOG_CONFIG_IN
,
2155 "time value out of order for %s", name
);
2156 list
[count
+1] = value
;
2157 if (snext
== NULL
) break;
2159 while (isspace(*s
)) s
++;
2162 if (count
> list
[0] - 2)
2163 log_write(0, LOG_PANIC_DIE
|LOG_CONFIG_IN
, "too many time values for %s",
2165 if (count
> 0 && list
[2] == 0) count
= 0;
2172 void (*fn
)() = ol
->value
;
2183 /*************************************************
2184 * Print a time value *
2185 *************************************************/
2188 Argument: a time value in seconds
2189 Returns: pointer to a fixed buffer containing the time as a string,
2190 in readconf_readtime() format
2194 readconf_printtime(int t
)
2197 uschar
*p
= time_buffer
;
2214 if (w
> 0) { sprintf(CS p
, "%dw", w
); while (*p
) p
++; }
2215 if (d
> 0) { sprintf(CS p
, "%dd", d
); while (*p
) p
++; }
2216 if (h
> 0) { sprintf(CS p
, "%dh", h
); while (*p
) p
++; }
2217 if (m
> 0) { sprintf(CS p
, "%dm", m
); while (*p
) p
++; }
2218 if (s
> 0 || p
== time_buffer
) sprintf(CS p
, "%ds", s
);
2225 /*************************************************
2226 * Print an individual option value *
2227 *************************************************/
2229 /* This is used by the -bP option, so prints to the standard output.
2230 The entire options list is passed in as an argument, because some options come
2231 in pairs - typically uid/gid settings, which can either be explicit numerical
2232 values, or strings to be expanded later. If the numerical value is unset,
2233 search for "*expand_<name>" to see if there is a string equivalent.
2236 ol option entry, or NULL for an unknown option
2238 options_block NULL for main configuration options; otherwise points to
2239 a driver block; if the option doesn't have opt_public
2240 set, then options_block->options_block is where the item
2242 oltop points to the option list in which ol exists
2243 last one more than the offset of the last entry in optop
2244 no_labels do not show "foo = " at the start.
2250 print_ol(optionlist
*ol
, uschar
*name
, void *options_block
,
2251 optionlist
*oltop
, int last
, BOOL no_labels
)
2264 printf("%s is not a known option\n", name
);
2268 /* Non-admin callers cannot see options that have been flagged secure by the
2271 if (!admin_user
&& (ol
->type
& opt_secure
) != 0)
2274 printf("%s\n", hidden
);
2276 printf("%s = %s\n", name
, hidden
);
2280 /* Else show the value of the option */
2283 if (options_block
!= NULL
)
2285 if ((ol
->type
& opt_public
) == 0)
2286 options_block
= (void *)(((driver_instance
*)options_block
)->options_block
);
2287 value
= (void *)((uschar
*)options_block
+ (long int)value
);
2290 switch(ol
->type
& opt_mask
)
2293 case opt_rewrite
: /* Show the text value */
2294 s
= *((uschar
**)value
);
2295 if (!no_labels
) printf("%s = ", name
);
2296 printf("%s\n", (s
== NULL
)? US
"" : string_printing2(s
, FALSE
));
2300 if (!no_labels
) printf("%s = ", name
);
2301 printf("%d\n", *((int *)value
));
2306 int x
= *((int *)value
);
2307 if (x
!= 0 && (x
& 1023) == 0)
2311 if ((x
& 1023) == 0)
2316 if (!no_labels
) printf("%s = ", name
);
2317 printf("%d%c\n", x
, c
);
2321 if (!no_labels
) printf("%s = ", name
);
2329 int x
= *((int *)value
);
2330 if (!no_labels
) printf("%s = ", name
);
2331 if (x
== 0) printf("0\n");
2332 else if ((x
& 1023) == 0) printf("%dM\n", x
>> 10);
2333 else printf("%dK\n", x
);
2338 if (!no_labels
) printf("%s = ", name
);
2339 printf("%#o\n", *((int *)value
));
2342 /* Can be negative only when "unset", in which case integer */
2346 int x
= *((int *)value
);
2349 if (x
< 0) printf("%s =\n", name
); else
2351 if (!no_labels
) printf("%s = ", name
);
2352 printf("%d.", x
/1000);
2365 /* If the numerical value is unset, try for the string value */
2367 case opt_expand_uid
:
2368 if (! *get_set_flag(name
, oltop
, last
, options_block
))
2370 sprintf(CS name2
, "*expand_%.50s", name
);
2371 ol2
= find_option(name2
, oltop
, last
);
2374 void *value2
= ol2
->value
;
2375 if (options_block
!= NULL
)
2376 value2
= (void *)((uschar
*)options_block
+ (long int)value2
);
2377 s
= *((uschar
**)value2
);
2378 if (!no_labels
) printf("%s = ", name
);
2379 printf("%s\n", (s
== NULL
)? US
"" : string_printing(s
));
2384 /* Else fall through */
2387 if (!no_labels
) printf("%s = ", name
);
2388 if (! *get_set_flag(name
, oltop
, last
, options_block
))
2392 pw
= getpwuid(*((uid_t
*)value
));
2394 printf("%ld\n", (long int)(*((uid_t
*)value
)));
2395 else printf("%s\n", pw
->pw_name
);
2399 /* If the numerical value is unset, try for the string value */
2401 case opt_expand_gid
:
2402 if (! *get_set_flag(name
, oltop
, last
, options_block
))
2404 sprintf(CS name2
, "*expand_%.50s", name
);
2405 ol2
= find_option(name2
, oltop
, last
);
2406 if (ol2
!= NULL
&& (ol2
->type
& opt_mask
) == opt_stringptr
)
2408 void *value2
= ol2
->value
;
2409 if (options_block
!= NULL
)
2410 value2
= (void *)((uschar
*)options_block
+ (long int)value2
);
2411 s
= *((uschar
**)value2
);
2412 if (!no_labels
) printf("%s = ", name
);
2413 printf("%s\n", (s
== NULL
)? US
"" : string_printing(s
));
2418 /* Else fall through */
2421 if (!no_labels
) printf("%s = ", name
);
2422 if (! *get_set_flag(name
, oltop
, last
, options_block
))
2426 gr
= getgrgid(*((int *)value
));
2428 printf("%ld\n", (long int)(*((int *)value
)));
2429 else printf("%s\n", gr
->gr_name
);
2434 uidlist
= *((uid_t
**)value
);
2435 if (!no_labels
) printf("%s =", name
);
2436 if (uidlist
!= NULL
)
2440 if (no_labels
) sep
= '\0';
2441 for (i
= 1; i
<= (int)(uidlist
[0]); i
++)
2443 uschar
*name
= NULL
;
2444 pw
= getpwuid(uidlist
[i
]);
2445 if (pw
!= NULL
) name
= US pw
->pw_name
;
2446 if (sep
!= '\0') printf("%c", sep
);
2447 if (name
!= NULL
) printf("%s", name
);
2448 else printf("%ld", (long int)(uidlist
[i
]));
2456 gidlist
= *((gid_t
**)value
);
2457 if (!no_labels
) printf("%s =", name
);
2458 if (gidlist
!= NULL
)
2462 if (no_labels
) sep
= '\0';
2463 for (i
= 1; i
<= (int)(gidlist
[0]); i
++)
2465 uschar
*name
= NULL
;
2466 gr
= getgrgid(gidlist
[i
]);
2467 if (gr
!= NULL
) name
= US gr
->gr_name
;
2468 if (sep
!= '\0') printf("%c", sep
);
2469 if (name
!= NULL
) printf("%s", name
);
2470 else printf("%ld", (long int)(gidlist
[i
]));
2478 if (!no_labels
) printf("%s = ", name
);
2479 printf("%s\n", readconf_printtime(*((int *)value
)));
2485 int *list
= (int *)value
;
2486 if (!no_labels
) printf("%s = ", name
);
2487 for (i
= 0; i
< list
[1]; i
++)
2488 printf("%s%s", (i
== 0)? "" : ":", readconf_printtime(list
[i
+2]));
2494 printf("%s%s\n", ((*((int *)value
)) & (1 << ((ol
->type
>> 16) & 31)))?
2498 case opt_expand_bool
:
2499 sprintf(CS name2
, "*expand_%.50s", name
);
2500 ol2
= find_option(name2
, oltop
, last
);
2501 if (ol2
!= NULL
&& ol2
->value
!= NULL
)
2503 void *value2
= ol2
->value
;
2504 if (options_block
!= NULL
)
2505 value2
= (void *)((uschar
*)options_block
+ (long int)value2
);
2506 s
= *((uschar
**)value2
);
2509 if (!no_labels
) printf("%s = ", name
);
2510 printf("%s\n", string_printing(s
));
2513 /* s == NULL => string not set; fall through */
2519 case opt_bool_verify
:
2521 printf("%s%s\n", (*((BOOL
*)value
))? "" : "no_", name
);
2528 /*************************************************
2529 * Print value from main configuration *
2530 *************************************************/
2532 /* This function, called as a result of encountering the -bP option,
2533 causes the value of any main configuration variable to be output if the
2534 second argument is NULL. There are some special values:
2536 all print all main configuration options
2537 configure_file print the name of the configuration file
2538 routers print the routers' configurations
2539 transports print the transports' configuration
2540 authenticators print the authenticators' configuration
2541 macros print the macros' configuration
2542 router_list print a list of router names
2543 transport_list print a list of transport names
2544 authenticator_list print a list of authentication mechanism names
2545 macro_list print a list of macro names
2546 +name print a named list item
2547 local_scan print the local_scan options
2548 config print the configuration as it is parsed
2550 If the second argument is not NULL, it must be one of "router", "transport",
2551 "authenticator" or "macro" in which case the first argument identifies the
2552 driver whose options are to be printed.
2555 name option name if type == NULL; else driver name
2556 type NULL or driver type name, as described above
2557 no_labels avoid the "foo = " at the start of an item
2563 readconf_print(uschar
*name
, uschar
*type
, BOOL no_labels
)
2565 BOOL names_only
= FALSE
;
2567 optionlist
*ol2
= NULL
;
2568 driver_instance
*d
= NULL
;
2579 static uschar
*types
[] = { US
"address", US
"domain", US
"host",
2581 static tree_node
**anchors
[] = { &addresslist_anchor
, &domainlist_anchor
,
2582 &hostlist_anchor
, &localpartlist_anchor
};
2584 for (i
= 0; i
< 4; i
++)
2586 t
= tree_search(*(anchors
[i
]), name
+1);
2591 printf("%s\n", ((namedlist_block
*)(t
->data
.ptr
))->string
);
2593 printf("%slist %s = %s\n", types
[i
], name
+1,
2594 ((namedlist_block
*)(t
->data
.ptr
))->string
);
2599 printf("no address, domain, host, or local part list called \"%s\" "
2600 "exists\n", name
+1);
2605 if (Ustrcmp(name
, "configure_file") == 0)
2607 printf("%s\n", CS config_main_filename
);
2611 if (Ustrcmp(name
, "all") == 0)
2613 for (ol
= optionlist_config
;
2614 ol
< optionlist_config
+ optionlist_config_size
; ol
++)
2616 if ((ol
->type
& opt_hidden
) == 0)
2617 print_ol(ol
, US ol
->name
, NULL
,
2618 optionlist_config
, optionlist_config_size
,
2624 if (Ustrcmp(name
, "local_scan") == 0)
2626 #ifndef LOCAL_SCAN_HAS_OPTIONS
2627 printf("local_scan() options are not supported\n");
2629 for (ol
= local_scan_options
;
2630 ol
< local_scan_options
+ local_scan_options_count
; ol
++)
2632 print_ol(ol
, US ol
->name
, NULL
, local_scan_options
,
2633 local_scan_options_count
, no_labels
);
2639 if (Ustrcmp(name
, "config") == 0)
2641 print_config(admin_user
);
2645 if (Ustrcmp(name
, "routers") == 0)
2650 else if (Ustrcmp(name
, "transports") == 0)
2652 type
= US
"transport";
2656 else if (Ustrcmp(name
, "authenticators") == 0)
2658 type
= US
"authenticator";
2662 else if (Ustrcmp(name
, "macros") == 0)
2668 else if (Ustrcmp(name
, "router_list") == 0)
2675 else if (Ustrcmp(name
, "transport_list") == 0)
2677 type
= US
"transport";
2682 else if (Ustrcmp(name
, "authenticator_list") == 0)
2684 type
= US
"authenticator";
2689 else if (Ustrcmp(name
, "macro_list") == 0)
2698 print_ol(find_option(name
, optionlist_config
, optionlist_config_size
),
2699 name
, NULL
, optionlist_config
, optionlist_config_size
, no_labels
);
2704 /* Handle the options for a router or transport. Skip options that are flagged
2705 as hidden. Some of these are options with names starting with '*', used for
2706 internal alternative representations of other options (which the printing
2707 function will sort out). Others are synonyms kept for backward compatibility.
2710 if (Ustrcmp(type
, "router") == 0)
2712 d
= (driver_instance
*)routers
;
2713 ol2
= optionlist_routers
;
2714 size
= optionlist_routers_size
;
2716 else if (Ustrcmp(type
, "transport") == 0)
2718 d
= (driver_instance
*)transports
;
2719 ol2
= optionlist_transports
;
2720 size
= optionlist_transports_size
;
2722 else if (Ustrcmp(type
, "authenticator") == 0)
2724 d
= (driver_instance
*)auths
;
2725 ol2
= optionlist_auths
;
2726 size
= optionlist_auths_size
;
2729 else if (Ustrcmp(type
, "macro") == 0)
2731 /* People store passwords in macros and they were previously not available
2732 for printing. So we have an admin_users restriction. */
2735 fprintf(stderr
, "exim: permission denied\n");
2738 for (m
= macros
; m
!= NULL
; m
= m
->next
)
2740 if (name
== NULL
|| Ustrcmp(name
, m
->name
) == 0)
2743 printf("%s\n", CS m
->name
);
2745 printf("%s=%s\n", CS m
->name
, CS m
->replacement
);
2751 printf("%s %s not found\n", type
, name
);
2757 for (; d
!= NULL
; d
= d
->next
) printf("%s\n", CS d
->name
);
2761 /* Either search for a given driver, or print all of them */
2763 for (; d
!= NULL
; d
= d
->next
)
2766 printf("\n%s %s:\n", d
->name
, type
);
2767 else if (Ustrcmp(d
->name
, name
) != 0) continue;
2769 for (ol
= ol2
; ol
< ol2
+ size
; ol
++)
2771 if ((ol
->type
& opt_hidden
) == 0)
2772 print_ol(ol
, US ol
->name
, d
, ol2
, size
, no_labels
);
2775 for (ol
= d
->info
->options
;
2776 ol
< d
->info
->options
+ *(d
->info
->options_count
); ol
++)
2778 if ((ol
->type
& opt_hidden
) == 0)
2779 print_ol(ol
, US ol
->name
, d
, d
->info
->options
, *(d
->info
->options_count
), no_labels
);
2781 if (name
!= NULL
) return;
2783 if (name
!= NULL
) printf("%s %s not found\n", type
, name
);
2788 /*************************************************
2789 * Read a named list item *
2790 *************************************************/
2792 /* This function reads a name and a list (i.e. string). The name is used to
2793 save the list in a tree, sorted by its name. Each entry also has a number,
2794 which can be used for caching tests, but if the string contains any expansion
2795 items other than $key, the number is set negative to inhibit caching. This
2796 mechanism is used for domain, host, and address lists that are referenced by
2800 anchorp points to the tree anchor
2801 numberp points to the current number for this tree
2802 max the maximum number permitted
2803 s the text of the option line, starting immediately after the name
2805 tname the name of the list type, for messages
2811 read_named_list(tree_node
**anchorp
, int *numberp
, int max
, uschar
*s
,
2814 BOOL forcecache
= FALSE
;
2817 namedlist_block
*nb
= store_get(sizeof(namedlist_block
));
2819 if (Ustrncmp(s
, "_cache", 6) == 0)
2826 log_write(0, LOG_PANIC_DIE
|LOG_CONFIG_IN
, "unrecognized configuration line");
2828 if (*numberp
>= max
)
2829 log_write(0, LOG_PANIC_DIE
|LOG_CONFIG_IN
, "too many named %ss (max is %d)\n",
2832 while (isspace(*s
)) s
++;
2834 while (isalnum(*s
) || *s
== '_') s
++;
2835 t
= store_get(sizeof(tree_node
) + s
-ss
);
2836 Ustrncpy(t
->name
, ss
, s
-ss
);
2838 while (isspace(*s
)) s
++;
2840 if (!tree_insertnode(anchorp
, t
))
2841 log_write(0, LOG_PANIC_DIE
|LOG_CONFIG_IN
,
2842 "duplicate name \"%s\" for a named %s", t
->name
, tname
);
2845 nb
->number
= *numberp
;
2848 if (*s
++ != '=') log_write(0, LOG_PANIC_DIE
|LOG_CONFIG_IN
,
2849 "missing '=' after \"%s\"", t
->name
);
2850 while (isspace(*s
)) s
++;
2851 nb
->string
= read_string(s
, t
->name
);
2852 nb
->cache_data
= NULL
;
2854 /* Check the string for any expansions; if any are found, mark this list
2855 uncacheable unless the user has explicited forced caching. */
2857 if (!forcecache
&& Ustrchr(nb
->string
, '$') != NULL
) nb
->number
= -1;
2863 /*************************************************
2864 * Unpick data for a rate limit *
2865 *************************************************/
2867 /* This function is called to unpick smtp_ratelimit_{mail,rcpt} into four
2871 s string, in the form t,b,f,l
2872 where t is the threshold (integer)
2873 b is the initial delay (time)
2874 f is the multiplicative factor (fixed point)
2875 k is the maximum time (time)
2876 threshold where to store threshold
2877 base where to store base in milliseconds
2878 factor where to store factor in milliseconds
2879 limit where to store limit
2881 Returns: nothing (panics on error)
2885 unpick_ratelimit(uschar
*s
, int *threshold
, int *base
, double *factor
,
2888 uschar bstring
[16], lstring
[16];
2890 if (sscanf(CS s
, "%d, %15[0123456789smhdw.], %lf, %15s", threshold
, bstring
,
2891 factor
, lstring
) == 4)
2893 *base
= readconf_readtime(bstring
, 0, TRUE
);
2894 *limit
= readconf_readtime(lstring
, 0, TRUE
);
2895 if (*base
>= 0 && *limit
>= 0) return;
2897 log_write(0, LOG_MAIN
|LOG_PANIC_DIE
, "malformed ratelimit data: %s", s
);
2903 /*************************************************
2904 * Drop privs for checking TLS config *
2905 *************************************************/
2907 /* We want to validate TLS options during readconf, but do not want to be
2908 root when we call into the TLS library, in case of library linkage errors
2909 which cause segfaults; before this check, those were always done as the Exim
2910 runtime user and it makes sense to continue with that.
2912 Assumes: tls_require_ciphers has been set, if it will be
2913 exim_user has been set, if it will be
2914 exim_group has been set, if it will be
2916 Returns: bool for "okay"; false will cause caller to immediately exit.
2921 tls_dropprivs_validate_require_cipher(void)
2923 const uschar
*errmsg
;
2926 void (*oldsignal
)(int);
2928 /* If TLS will never be used, no point checking ciphers */
2930 if ( !tls_advertise_hosts
2931 || !*tls_advertise_hosts
2932 || Ustrcmp(tls_advertise_hosts
, ":") == 0
2935 else if (!tls_certificate
)
2936 log_write(0, LOG_MAIN
|LOG_PANIC
,
2937 "Warning: No server certificate defined; TLS connections will fail.\n"
2938 " Suggested action: either install a certificate or change tls_advertise_hosts option");
2940 oldsignal
= signal(SIGCHLD
, SIG_DFL
);
2943 if ((pid
= fork()) < 0)
2944 log_write(0, LOG_MAIN
|LOG_PANIC_DIE
, "fork failed for TLS check");
2948 /* in some modes, will have dropped privilege already */
2950 exim_setugid(exim_uid
, exim_gid
, FALSE
,
2951 US
"calling tls_validate_require_cipher");
2953 errmsg
= tls_validate_require_cipher();
2956 log_write(0, LOG_PANIC_DIE
|LOG_CONFIG
,
2957 "tls_require_ciphers invalid: %s", errmsg
);
2964 rc
= waitpid(pid
, &status
, 0);
2965 } while (rc
< 0 && errno
== EINTR
);
2968 debug_printf("tls_validate_require_cipher child %d ended: status=0x%x\n",
2971 signal(SIGCHLD
, oldsignal
);
2975 #endif /* SUPPORT_TLS */
2980 /*************************************************
2981 * Read main configuration options *
2982 *************************************************/
2984 /* This function is the first to be called for configuration reading. It
2985 opens the configuration file and reads general configuration settings until
2986 it reaches the end of the configuration section. The file is then left open so
2987 that the remaining configuration data can subsequently be read if needed for
2990 The configuration file must be owned either by root or exim, and be writeable
2991 only by root or uid/gid exim. The values for Exim's uid and gid can be changed
2992 in the config file, so the test is done on the compiled in values. A slight
2993 anomaly, to be carefully documented.
2995 The name of the configuration file is taken from a list that is included in the
2996 binary of Exim. It can be altered from the command line, but if that is done,
2997 root privilege is immediately withdrawn unless the caller is root or exim.
2998 The first file on the list that exists is used.
3000 For use on multiple systems that share file systems, first look for a
3001 configuration file whose name has the current node name on the end. If that is
3002 not found, try the generic name. For really contorted configurations, that run
3003 multiple Exims with different uid settings, first try adding the effective uid
3004 before the node name. These complications are going to waste resources on most
3005 systems. Therefore they are available only when requested by compile-time
3012 struct stat statbuf
;
3013 uschar
*s
, *filename
;
3014 const uschar
*list
= config_main_filelist
;
3016 /* Loop through the possible file names */
3018 while((filename
= string_nextinlist(&list
, &sep
, big_buffer
, big_buffer_size
))
3021 /* Cut out all the fancy processing unless specifically wanted */
3023 #if defined(CONFIGURE_FILE_USE_NODE) || defined(CONFIGURE_FILE_USE_EUID)
3024 uschar
*suffix
= filename
+ Ustrlen(filename
);
3026 /* Try for the node-specific file if a node name exists */
3028 #ifdef CONFIGURE_FILE_USE_NODE
3030 if (uname(&uts
) >= 0)
3032 #ifdef CONFIGURE_FILE_USE_EUID
3033 sprintf(CS suffix
, ".%ld.%.256s", (long int)original_euid
, uts
.nodename
);
3034 config_file
= Ufopen(filename
, "rb");
3035 if (config_file
== NULL
)
3036 #endif /* CONFIGURE_FILE_USE_EUID */
3038 sprintf(CS suffix
, ".%.256s", uts
.nodename
);
3039 config_file
= Ufopen(filename
, "rb");
3042 #endif /* CONFIGURE_FILE_USE_NODE */
3044 /* Otherwise, try the generic name, possibly with the euid added */
3046 #ifdef CONFIGURE_FILE_USE_EUID
3047 if (config_file
== NULL
)
3049 sprintf(CS suffix
, ".%ld", (long int)original_euid
);
3050 config_file
= Ufopen(filename
, "rb");
3052 #endif /* CONFIGURE_FILE_USE_EUID */
3054 /* Finally, try the unadorned name */
3056 if (config_file
== NULL
)
3059 config_file
= Ufopen(filename
, "rb");
3061 #else /* if neither defined */
3063 /* This is the common case when the fancy processing is not included. */
3065 config_file
= Ufopen(filename
, "rb");
3068 /* If the file does not exist, continue to try any others. For any other
3069 error, break out (and die). */
3071 if (config_file
!= NULL
|| errno
!= ENOENT
) break;
3074 /* On success, save the name for verification; config_filename is used when
3075 logging configuration errors (it changes for .included files) whereas
3076 config_main_filename is the name shown by -bP. Failure to open a configuration
3077 file is a serious disaster. */
3079 if (config_file
!= NULL
)
3082 config_filename
= config_main_filename
= string_copy(filename
);
3084 p
= Ustrrchr(filename
, '/');
3085 config_main_directory
= p
? string_copyn(filename
, p
- filename
)
3086 : string_copy(US
".");
3090 if (filename
== NULL
)
3091 log_write(0, LOG_MAIN
|LOG_PANIC_DIE
, "non-existent configuration file(s): "
3092 "%s", config_main_filelist
);
3094 log_write(0, LOG_MAIN
|LOG_PANIC_DIE
, "%s", string_open_failed(errno
,
3095 "configuration file %s", filename
));
3098 /* Check the status of the file we have opened, if we have retained root
3099 privileges and the file isn't /dev/null (which *should* be 0666). */
3101 if (trusted_config
&& Ustrcmp(filename
, US
"/dev/null"))
3103 if (fstat(fileno(config_file
), &statbuf
) != 0)
3104 log_write(0, LOG_MAIN
|LOG_PANIC_DIE
, "failed to stat configuration file %s",
3107 if ((statbuf
.st_uid
!= root_uid
/* owner not root */
3108 #ifdef CONFIGURE_OWNER
3109 && statbuf
.st_uid
!= config_uid
/* owner not the special one */
3112 (statbuf
.st_gid
!= root_gid
/* group not root & */
3113 #ifdef CONFIGURE_GROUP
3114 && statbuf
.st_gid
!= config_gid
/* group not the special one */
3116 && (statbuf
.st_mode
& 020) != 0) || /* group writeable */
3118 ((statbuf
.st_mode
& 2) != 0)) /* world writeable */
3120 log_write(0, LOG_MAIN
|LOG_PANIC_DIE
, "Exim configuration file %s has the "
3121 "wrong owner, group, or mode", big_buffer
);
3124 /* Process the main configuration settings. They all begin with a lower case
3125 letter. If we see something starting with an upper case letter, it is taken as
3126 a macro definition. */
3128 while ((s
= get_config_line()) != NULL
)
3130 if (isupper(s
[0])) read_macro_assignment(s
);
3132 else if (Ustrncmp(s
, "domainlist", 10) == 0)
3133 read_named_list(&domainlist_anchor
, &domainlist_count
,
3134 MAX_NAMED_LIST
, s
+10, US
"domain list");
3136 else if (Ustrncmp(s
, "hostlist", 8) == 0)
3137 read_named_list(&hostlist_anchor
, &hostlist_count
,
3138 MAX_NAMED_LIST
, s
+8, US
"host list");
3140 else if (Ustrncmp(s
, US
"addresslist", 11) == 0)
3141 read_named_list(&addresslist_anchor
, &addresslist_count
,
3142 MAX_NAMED_LIST
, s
+11, US
"address list");
3144 else if (Ustrncmp(s
, US
"localpartlist", 13) == 0)
3145 read_named_list(&localpartlist_anchor
, &localpartlist_count
,
3146 MAX_NAMED_LIST
, s
+13, US
"local part list");
3149 (void) readconf_handle_option(s
, optionlist_config
, optionlist_config_size
,
3150 NULL
, US
"main option \"%s\" unknown");
3154 /* If local_sender_retain is set, local_from_check must be unset. */
3156 if (local_sender_retain
&& local_from_check
)
3157 log_write(0, LOG_MAIN
|LOG_PANIC_DIE
, "both local_from_check and "
3158 "local_sender_retain are set; this combination is not allowed");
3160 /* If the timezone string is empty, set it to NULL, implying no TZ variable
3163 if (timezone_string
!= NULL
&& *timezone_string
== 0) timezone_string
= NULL
;
3165 /* The max retry interval must not be greater than 24 hours. */
3167 if (retry_interval_max
> 24*60*60) retry_interval_max
= 24*60*60;
3169 /* remote_max_parallel must be > 0 */
3171 if (remote_max_parallel
<= 0) remote_max_parallel
= 1;
3173 /* Save the configured setting of freeze_tell, so we can re-instate it at the
3174 start of a new SMTP message. */
3176 freeze_tell_config
= freeze_tell
;
3178 /* The primary host name may be required for expansion of spool_directory
3179 and log_file_path, so make sure it is set asap. It is obtained from uname(),
3180 but if that yields an unqualified value, make a FQDN by using gethostbyname to
3181 canonize it. Some people like upper case letters in their host names, so we
3182 don't force the case. */
3184 if (primary_hostname
== NULL
)
3186 const uschar
*hostname
;
3188 if (uname(&uts
) < 0)
3189 log_write(0, LOG_MAIN
|LOG_PANIC_DIE
, "uname() failed to yield host name");
3190 hostname
= US uts
.nodename
;
3192 if (Ustrchr(hostname
, '.') == NULL
)
3195 struct hostent
*hostdata
;
3198 if (!disable_ipv6
&& (dns_ipv4_lookup
== NULL
||
3199 match_isinlist(hostname
, CUSS
&dns_ipv4_lookup
, 0, NULL
, NULL
,
3200 MCL_DOMAIN
, TRUE
, NULL
) != OK
))
3209 #if HAVE_GETIPNODEBYNAME
3211 hostdata
= getipnodebyname(CS hostname
, af
, 0, &error_num
);
3213 hostdata
= gethostbyname2(CS hostname
, af
);
3216 hostdata
= gethostbyname(CS hostname
);
3219 if (hostdata
!= NULL
)
3221 hostname
= US hostdata
->h_name
;
3225 if (af
== AF_INET
) break;
3230 primary_hostname
= string_copy(hostname
);
3233 /* Set up default value for smtp_active_hostname */
3235 smtp_active_hostname
= primary_hostname
;
3237 /* If spool_directory wasn't set in the build-time configuration, it must have
3238 got set above. Of course, writing to the log may not work if log_file_path is
3239 not set, but it will at least get to syslog or somewhere, with any luck. */
3241 if (*spool_directory
== 0)
3242 log_write(0, LOG_MAIN
|LOG_PANIC_DIE
, "spool_directory undefined: cannot "
3245 /* Expand the spool directory name; it may, for example, contain the primary
3246 host name. Same comment about failure. */
3248 s
= expand_string(spool_directory
);
3250 log_write(0, LOG_MAIN
|LOG_PANIC_DIE
, "failed to expand spool_directory "
3251 "\"%s\": %s", spool_directory
, expand_string_message
);
3252 spool_directory
= s
;
3254 /* Expand log_file_path, which must contain "%s" in any component that isn't
3255 the null string or "syslog". It is also allowed to contain one instance of %D
3256 or %M. However, it must NOT contain % followed by anything else. */
3258 if (*log_file_path
!= 0)
3260 const uschar
*ss
, *sss
;
3261 int sep
= ':'; /* Fixed for log file path */
3262 s
= expand_string(log_file_path
);
3264 log_write(0, LOG_MAIN
|LOG_PANIC_DIE
, "failed to expand log_file_path "
3265 "\"%s\": %s", log_file_path
, expand_string_message
);
3268 while ((sss
= string_nextinlist(&ss
,&sep
,big_buffer
,big_buffer_size
)) != NULL
)
3271 if (sss
[0] == 0 || Ustrcmp(sss
, "syslog") == 0) continue;
3272 t
= Ustrstr(sss
, "%s");
3274 log_write(0, LOG_MAIN
|LOG_PANIC_DIE
, "log_file_path \"%s\" does not "
3275 "contain \"%%s\"", sss
);
3277 t
= Ustrchr(sss
, '%');
3280 if ((t
[1] != 'D' && t
[1] != 'M') || Ustrchr(t
+2, '%') != NULL
)
3281 log_write(0, LOG_MAIN
|LOG_PANIC_DIE
, "log_file_path \"%s\" contains "
3282 "unexpected \"%%\" character", s
);
3289 /* Interpret syslog_facility into an integer argument for 'ident' param to
3290 openlog(). Default is LOG_MAIL set in globals.c. Allow the user to omit the
3293 if (syslog_facility_str
!= NULL
)
3296 uschar
*s
= syslog_facility_str
;
3298 if ((Ustrlen(syslog_facility_str
) >= 4) &&
3299 (strncmpic(syslog_facility_str
, US
"log_", 4) == 0))
3302 for (i
= 0; i
< syslog_list_size
; i
++)
3304 if (strcmpic(s
, syslog_list
[i
].name
) == 0)
3306 syslog_facility
= syslog_list
[i
].value
;
3311 if (i
>= syslog_list_size
)
3313 log_write(0, LOG_PANIC_DIE
|LOG_CONFIG
,
3314 "failed to interpret syslog_facility \"%s\"", syslog_facility_str
);
3318 /* Expand pid_file_path */
3320 if (*pid_file_path
!= 0)
3322 s
= expand_string(pid_file_path
);
3324 log_write(0, LOG_MAIN
|LOG_PANIC_DIE
, "failed to expand pid_file_path "
3325 "\"%s\": %s", pid_file_path
, expand_string_message
);
3329 /* Set default value of process_log_path */
3331 if (process_log_path
== NULL
|| *process_log_path
=='\0')
3332 process_log_path
= string_sprintf("%s/exim-process.info", spool_directory
);
3334 /* Compile the regex for matching a UUCP-style "From_" line in an incoming
3337 regex_From
= regex_must_compile(uucp_from_pattern
, FALSE
, TRUE
);
3339 /* Unpick the SMTP rate limiting options, if set */
3341 if (smtp_ratelimit_mail
!= NULL
)
3343 unpick_ratelimit(smtp_ratelimit_mail
, &smtp_rlm_threshold
,
3344 &smtp_rlm_base
, &smtp_rlm_factor
, &smtp_rlm_limit
);
3347 if (smtp_ratelimit_rcpt
!= NULL
)
3349 unpick_ratelimit(smtp_ratelimit_rcpt
, &smtp_rlr_threshold
,
3350 &smtp_rlr_base
, &smtp_rlr_factor
, &smtp_rlr_limit
);
3353 /* The qualify domains default to the primary host name */
3355 if (qualify_domain_sender
== NULL
)
3356 qualify_domain_sender
= primary_hostname
;
3357 if (qualify_domain_recipient
== NULL
)
3358 qualify_domain_recipient
= qualify_domain_sender
;
3360 /* Setting system_filter_user in the configuration sets the gid as well if a
3361 name is given, but a numerical value does not. */
3363 if (system_filter_uid_set
&& !system_filter_gid_set
)
3365 struct passwd
*pw
= getpwuid(system_filter_uid
);
3367 log_write(0, LOG_MAIN
|LOG_PANIC_DIE
, "Failed to look up uid %ld",
3368 (long int)system_filter_uid
);
3369 system_filter_gid
= pw
->pw_gid
;
3370 system_filter_gid_set
= TRUE
;
3373 /* If the errors_reply_to field is set, check that it is syntactically valid
3374 and ensure it contains a domain. */
3376 if (errors_reply_to
!= NULL
)
3379 int start
, end
, domain
;
3380 uschar
*recipient
= parse_extract_address(errors_reply_to
, &errmess
,
3381 &start
, &end
, &domain
, FALSE
);
3383 if (recipient
== NULL
)
3384 log_write(0, LOG_PANIC_DIE
|LOG_CONFIG
,
3385 "error in errors_reply_to (%s): %s", errors_reply_to
, errmess
);
3388 log_write(0, LOG_PANIC_DIE
|LOG_CONFIG
,
3389 "errors_reply_to (%s) does not contain a domain", errors_reply_to
);
3392 /* If smtp_accept_queue or smtp_accept_max_per_host is set, then
3393 smtp_accept_max must also be set. */
3395 if (smtp_accept_max
== 0 &&
3396 (smtp_accept_queue
> 0 || smtp_accept_max_per_host
!= NULL
))
3397 log_write(0, LOG_PANIC_DIE
|LOG_CONFIG
,
3398 "smtp_accept_max must be set if smtp_accept_queue or "
3399 "smtp_accept_max_per_host is set");
3401 /* Set up the host number if anything is specified. It is an expanded string
3402 so that it can be computed from the host name, for example. We do this last
3403 so as to ensure that everything else is set up before the expansion. */
3405 if (host_number_string
!= NULL
)
3409 uschar
*s
= expand_string(host_number_string
);
3411 log_write(0, LOG_MAIN
|LOG_PANIC_DIE
,
3412 "failed to expand localhost_number \"%s\": %s",
3413 host_number_string
, expand_string_message
);
3414 n
= Ustrtol(s
, &end
, 0);
3415 while (isspace(*end
)) end
++;
3417 log_write(0, LOG_PANIC_DIE
|LOG_CONFIG
,
3418 "localhost_number value is not a number: %s", s
);
3419 if (n
> LOCALHOST_MAX
)
3420 log_write(0, LOG_PANIC_DIE
|LOG_CONFIG
,
3421 "localhost_number is greater than the maximum allowed value (%d)",
3427 /* If tls_verify_hosts is set, tls_verify_certificates must also be set */
3429 if ((tls_verify_hosts
!= NULL
|| tls_try_verify_hosts
!= NULL
) &&
3430 tls_verify_certificates
== NULL
)
3431 log_write(0, LOG_PANIC_DIE
|LOG_CONFIG
,
3432 "tls_%sverify_hosts is set, but tls_verify_certificates is not set",
3433 (tls_verify_hosts
!= NULL
)? "" : "try_");
3435 /* This also checks that the library linkage is working and we can call
3436 routines in it, so call even if tls_require_ciphers is unset */
3437 if (!tls_dropprivs_validate_require_cipher())
3440 /* Magic number: at time of writing, 1024 has been the long-standing value
3441 used by so many clients, and what Exim used to use always, that it makes
3442 sense to just min-clamp this max-clamp at that. */
3443 if (tls_dh_max_bits
< 1024)
3444 log_write(0, LOG_PANIC_DIE
|LOG_CONFIG
,
3445 "tls_dh_max_bits is too small, must be at least 1024 for interop");
3447 /* If openssl_options is set, validate it */
3448 if (openssl_options
!= NULL
)
3451 log_write(0, LOG_PANIC_DIE
|LOG_CONFIG
,
3452 "openssl_options is set but we're using GnuTLS");
3455 if (!(tls_openssl_options_parse(openssl_options
, &dummy
)))
3456 log_write(0, LOG_PANIC_DIE
|LOG_CONFIG
,
3457 "openssl_options parse error: %s", openssl_options
);
3461 if (gnutls_require_kx
|| gnutls_require_mac
|| gnutls_require_proto
)
3462 log_write(0, LOG_MAIN
, "WARNING: main options"
3463 " gnutls_require_kx, gnutls_require_mac and gnutls_require_protocols"
3465 #endif /*SUPPORT_TLS*/
3470 /*************************************************
3471 * Initialize one driver *
3472 *************************************************/
3474 /* This is called once the driver's generic options, if any, have been read.
3475 We can now find the driver, set up defaults for the private options, and
3476 unset any "set" bits in the private options table (which might have been
3477 set by another incarnation of the same driver).
3480 d pointer to driver instance block, with generic
3482 drivers_available vector of available drivers
3483 size_of_info size of each block in drivers_available
3484 class class of driver, for error message
3486 Returns: pointer to the driver info block
3489 static driver_info
*
3490 init_driver(driver_instance
*d
, driver_info
*drivers_available
,
3491 int size_of_info
, uschar
*class)
3495 for (dd
= drivers_available
; dd
->driver_name
[0] != 0;
3496 dd
= (driver_info
*)(((uschar
*)dd
) + size_of_info
))
3498 if (Ustrcmp(d
->driver_name
, dd
->driver_name
) == 0)
3501 int len
= dd
->options_len
;
3503 d
->options_block
= store_get(len
);
3504 memcpy(d
->options_block
, dd
->options_block
, len
);
3505 for (i
= 0; i
< *(dd
->options_count
); i
++)
3506 dd
->options
[i
].type
&= ~opt_set
;
3511 log_write(0, LOG_PANIC_DIE
|LOG_CONFIG_IN
,
3512 "%s %s: cannot find %s driver \"%s\"", class, d
->name
, class, d
->driver_name
);
3514 return NULL
; /* never obeyed */
3520 /*************************************************
3521 * Initialize driver list *
3522 *************************************************/
3524 /* This function is called for routers, transports, and authentication
3525 mechanisms. It reads the data from the current point in the configuration file
3526 up to the end of the section, and sets up a chain of instance blocks according
3527 to the file's contents. The file will already have been opened by a call to
3528 readconf_main, and must be left open for subsequent reading of further data.
3530 Any errors cause a panic crash. Note that the blocks with names driver_info and
3531 driver_instance must map the first portions of all the _info and _instance
3532 blocks for this shared code to work.
3535 class "router", "transport", or "authenticator"
3536 anchor &routers, &transports, &auths
3537 drivers_available available drivers
3538 size_of_info size of each info block
3539 instance_default points to default data for an instance
3540 instance_size size of instance block
3541 driver_optionlist generic option list
3542 driver_optionlist_count count of generic option list
3548 readconf_driver_init(
3550 driver_instance
**anchor
,
3551 driver_info
*drivers_available
,
3553 void *instance_default
,
3555 optionlist
*driver_optionlist
,
3556 int driver_optionlist_count
)
3558 driver_instance
**p
= anchor
;
3559 driver_instance
*d
= NULL
;
3562 while ((buffer
= get_config_line()) != NULL
)
3567 /* Read the first name on the line and test for the start of a new driver. A
3568 macro definition indicates the end of the previous driver. If this isn't the
3569 start of a new driver, the line will be re-read. */
3571 s
= readconf_readname(name
, sizeof(name
), buffer
);
3573 /* Handle macro definition, first finishing off the initialization of the
3574 previous driver, if any. */
3576 if (isupper(*name
) && *s
== '=')
3580 if (d
->driver_name
== NULL
)
3581 log_write(0, LOG_PANIC_DIE
|LOG_CONFIG
,
3582 "no driver defined for %s \"%s\"", class, d
->name
);
3586 read_macro_assignment(buffer
);
3590 /* If the line starts with a name terminated by a colon, we are at the
3591 start of the definition of a new driver. The rest of the line must be
3598 /* Finish off initializing the previous driver. */
3602 if (d
->driver_name
== NULL
)
3603 log_write(0, LOG_PANIC_DIE
|LOG_CONFIG
,
3604 "no driver defined for %s \"%s\"", class, d
->name
);
3608 /* Check that we haven't already got a driver of this name */
3610 for (d
= *anchor
; d
!= NULL
; d
= d
->next
)
3611 if (Ustrcmp(name
, d
->name
) == 0)
3612 log_write(0, LOG_PANIC_DIE
|LOG_CONFIG
,
3613 "there are two %ss called \"%s\"", class, name
);
3615 /* Set up a new driver instance data block on the chain, with
3616 its default values installed. */
3618 d
= store_get(instance_size
);
3619 memcpy(d
, instance_default
, instance_size
);
3622 d
->name
= string_copy(name
);
3624 /* Clear out the "set" bits in the generic options */
3626 for (i
= 0; i
< driver_optionlist_count
; i
++)
3627 driver_optionlist
[i
].type
&= ~opt_set
;
3629 /* Check nothing more on this line, then do the next loop iteration. */
3631 while (isspace(*s
)) s
++;
3632 if (*s
!= 0) extra_chars_error(s
, US
"driver name ", name
, US
"");
3636 /* Not the start of a new driver. Give an error if we have not set up a
3637 current driver yet. */
3639 if (d
== NULL
) log_write(0, LOG_PANIC_DIE
|LOG_CONFIG_IN
,
3640 "%s name missing", class);
3642 /* First look to see if this is a generic option; if it is "driver",
3643 initialize the driver. If is it not a generic option, we can look for a
3644 private option provided that the driver has been previously set up. */
3646 if (readconf_handle_option(buffer
, driver_optionlist
,
3647 driver_optionlist_count
, d
, NULL
))
3649 if (d
->info
== NULL
&& d
->driver_name
!= NULL
)
3650 init_driver(d
, drivers_available
, size_of_info
, class);
3653 /* Handle private options - pass the generic block because some may
3654 live therein. A flag with each option indicates if it is in the public
3657 else if (d
->info
!= NULL
)
3659 readconf_handle_option(buffer
, d
->info
->options
,
3660 *(d
->info
->options_count
), d
, US
"option \"%s\" unknown");
3663 /* The option is not generic and the driver name has not yet been given. */
3665 else log_write(0, LOG_PANIC_DIE
|LOG_CONFIG_IN
, "option \"%s\" unknown "
3666 "(\"driver\" must be specified before any private options)", name
);
3669 /* Run the initialization function for the final driver. */
3673 if (d
->driver_name
== NULL
)
3674 log_write(0, LOG_PANIC_DIE
|LOG_CONFIG
,
3675 "no driver defined for %s \"%s\"", class, d
->name
);
3682 /*************************************************
3683 * Check driver dependency *
3684 *************************************************/
3686 /* This function is passed a driver instance and a string. It checks whether
3687 any of the string options for the driver contains the given string as an
3691 d points to a driver instance block
3692 s the string to search for
3694 Returns: TRUE if a dependency is found
3698 readconf_depends(driver_instance
*d
, uschar
*s
)
3700 int count
= *(d
->info
->options_count
);
3704 for (ol
= d
->info
->options
; ol
< d
->info
->options
+ count
; ol
++)
3706 void *options_block
;
3708 int type
= ol
->type
& opt_mask
;
3709 if (type
!= opt_stringptr
) continue;
3710 options_block
= ((ol
->type
& opt_public
) == 0)? d
->options_block
: (void *)d
;
3711 value
= *(uschar
**)((uschar
*)options_block
+ (long int)(ol
->value
));
3712 if (value
!= NULL
&& (ss
= Ustrstr(value
, s
)) != NULL
)
3714 if (ss
<= value
|| (ss
[-1] != '$' && ss
[-1] != '{') ||
3715 isalnum(ss
[Ustrlen(s
)])) continue;
3716 DEBUG(D_transport
) debug_printf("driver %s: \"%s\" option depends on %s\n",
3717 d
->name
, ol
->name
, s
);
3722 DEBUG(D_transport
) debug_printf("driver %s does not depend on %s\n", d
->name
, s
);
3729 /*************************************************
3730 * Decode an error type for retries *
3731 *************************************************/
3733 /* This function is global because it is also called from the main
3734 program when testing retry information. It decodes strings such as "quota_7d"
3735 into numerical error codes.
3738 pp points to start of text
3739 p points past end of text
3740 basic_errno points to an int to receive the main error number
3741 more_errno points to an int to receive the secondary error data
3743 Returns: NULL if decoded correctly; else points to error text
3747 readconf_retry_error(const uschar
*pp
, const uschar
*p
,
3748 int *basic_errno
, int *more_errno
)
3751 const uschar
*q
= pp
;
3752 while (q
< p
&& *q
!= '_') q
++;
3755 if (len
== 5 && strncmpic(pp
, US
"quota", len
) == 0)
3757 *basic_errno
= ERRNO_EXIMQUOTA
;
3758 if (q
!= p
&& (*more_errno
= readconf_readtime(q
+1, *p
, FALSE
)) < 0)
3759 return US
"bad time value";
3762 else if (len
== 7 && strncmpic(pp
, US
"refused", len
) == 0)
3764 *basic_errno
= ECONNREFUSED
;
3767 if (strncmpic(q
+1, US
"MX", p
-q
-1) == 0) *more_errno
= 'M';
3768 else if (strncmpic(q
+1, US
"A", p
-q
-1) == 0) *more_errno
= 'A';
3769 else return US
"A or MX expected after \"refused\"";
3773 else if (len
== 7 && strncmpic(pp
, US
"timeout", len
) == 0)
3775 *basic_errno
= ETIMEDOUT
;
3779 int xlen
= p
- q
- 1;
3780 const uschar
*x
= q
+ 1;
3782 static uschar
*extras
[] =
3783 { US
"A", US
"MX", US
"connect", US
"connect_A", US
"connect_MX" };
3784 static int values
[] =
3785 { 'A', 'M', RTEF_CTOUT
, RTEF_CTOUT
|'A', RTEF_CTOUT
|'M' };
3787 for (i
= 0; i
< sizeof(extras
)/sizeof(uschar
*); i
++)
3788 if (strncmpic(x
, extras
[i
], xlen
) == 0)
3790 *more_errno
= values
[i
];
3794 if (i
>= sizeof(extras
)/sizeof(uschar
*))
3795 if (strncmpic(x
, US
"DNS", xlen
) == 0)
3796 log_write(0, LOG_MAIN
|LOG_PANIC
, "\"timeout_dns\" is no longer "
3797 "available in retry rules (it has never worked) - treated as "
3800 return US
"\"A\", \"MX\", or \"connect\" expected after \"timeout\"";
3804 else if (strncmpic(pp
, US
"mail_4", 6) == 0 ||
3805 strncmpic(pp
, US
"rcpt_4", 6) == 0 ||
3806 strncmpic(pp
, US
"data_4", 6) == 0)
3809 int x
= 255; /* means "any 4xx code" */
3810 if (p
!= pp
+ 8) bad
= TRUE
; else
3812 int a
= pp
[6], b
= pp
[7];
3816 if (isdigit(b
)) x
+= b
- '0';
3817 else if (b
== 'x') x
+= 100;
3820 else if (a
!= 'x' || b
!= 'x') bad
= TRUE
;
3824 return string_sprintf("%.4s_4 must be followed by xx, dx, or dd, where "
3825 "x is literal and d is any digit", pp
);
3827 *basic_errno
= *pp
== 'm' ? ERRNO_MAIL4XX
:
3828 *pp
== 'r' ? ERRNO_RCPT4XX
: ERRNO_DATA4XX
;
3829 *more_errno
= x
<< 8;
3832 else if (len
== 4 && strncmpic(pp
, US
"auth", len
) == 0 &&
3833 strncmpic(q
+1, US
"failed", p
-q
-1) == 0)
3834 *basic_errno
= ERRNO_AUTHFAIL
;
3836 else if (strncmpic(pp
, US
"lost_connection", p
- pp
) == 0)
3837 *basic_errno
= ERRNO_SMTPCLOSED
;
3839 else if (strncmpic(pp
, US
"tls_required", p
- pp
) == 0)
3840 *basic_errno
= ERRNO_TLSREQUIRED
;
3842 else if (strncmpic(pp
, US
"lookup", p
- pp
) == 0)
3843 *basic_errno
= ERRNO_UNKNOWNHOST
;
3845 else if (len
!= 1 || Ustrncmp(pp
, "*", 1) != 0)
3846 return string_sprintf("unknown or malformed retry error \"%.*s\"", (int) (p
-pp
), pp
);
3854 /*************************************************
3855 * Read retry information *
3856 *************************************************/
3858 /* Each line of retry information contains:
3860 . A domain name pattern or an address pattern;
3862 . An error name, possibly with additional data, or *;
3864 . An optional sequence of retry items, each consisting of an identifying
3865 letter, a cutoff time, and optional parameters.
3867 All this is decoded and placed into a control block. */
3870 /* Subroutine to read an argument, preceded by a comma and terminated
3871 by comma, semicolon, whitespace, or newline. The types are: 0 = time value,
3872 1 = fixed point number (returned *1000).
3875 paddr pointer to pointer to current character; updated
3876 type 0 => read a time; 1 => read a fixed point number
3878 Returns: time in seconds or fixed point number * 1000
3882 retry_arg(const uschar
**paddr
, int type
)
3884 const uschar
*p
= *paddr
;
3887 if (*p
++ != ',') log_write(0, LOG_PANIC_DIE
|LOG_CONFIG_IN
, "comma expected");
3889 while (isspace(*p
)) p
++;
3891 while (isalnum(*p
) || (type
== 1 && *p
== '.')) p
++;
3893 if (*p
!= 0 && !isspace(*p
) && *p
!= ',' && *p
!= ';')
3894 log_write(0, LOG_PANIC_DIE
|LOG_CONFIG_IN
, "comma or semicolon expected");
3899 case 0: return readconf_readtime(pp
, *p
, FALSE
);
3900 case 1: return readconf_readfixed(pp
, *p
);
3902 return 0; /* Keep picky compilers happy */
3905 /* The function proper */
3908 readconf_retries(void)
3910 retry_config
**chain
= &retries
;
3914 while ((p
= get_config_line()))
3916 retry_rule
**rchain
;
3920 next
= store_get(sizeof(retry_config
));
3923 chain
= &(next
->next
);
3924 next
->basic_errno
= next
->more_errno
= 0;
3925 next
->senders
= NULL
;
3927 rchain
= &(next
->rules
);
3929 next
->pattern
= string_dequote(&p
);
3930 while (isspace(*p
)) p
++;
3932 while (mac_isgraph(*p
)) p
++;
3933 if (p
- pp
<= 0) log_write(0, LOG_PANIC_DIE
|LOG_CONFIG_IN
,
3934 "missing error type in retry rule");
3936 /* Test error names for things we understand. */
3938 if ((error
= readconf_retry_error(pp
, p
, &next
->basic_errno
,
3939 &next
->more_errno
)))
3940 log_write(0, LOG_PANIC_DIE
|LOG_CONFIG_IN
, "%s", error
);
3942 /* There may be an optional address list of senders to be used as another
3943 constraint on the rule. This was added later, so the syntax is a bit of a
3944 fudge. Anything that is not a retry rule starting "F," or "G," is treated as
3947 while (isspace(*p
)) p
++;
3948 if (Ustrncmp(p
, "senders", 7) == 0)
3951 while (isspace(*p
)) p
++;
3952 if (*p
++ != '=') log_write(0, LOG_PANIC_DIE
|LOG_CONFIG_IN
,
3953 "\"=\" expected after \"senders\" in retry rule");
3954 while (isspace(*p
)) p
++;
3955 next
->senders
= string_dequote(&p
);
3958 /* Now the retry rules. Keep the maximum timeout encountered. */
3960 while (isspace(*p
)) p
++;
3964 retry_rule
*rule
= store_get(sizeof(retry_rule
));
3966 rchain
= &(rule
->next
);
3968 rule
->rule
= toupper(*p
++);
3969 rule
->timeout
= retry_arg(&p
, 0);
3970 if (rule
->timeout
> retry_maximum_timeout
)
3971 retry_maximum_timeout
= rule
->timeout
;
3975 case 'F': /* Fixed interval */
3976 rule
->p1
= retry_arg(&p
, 0);
3979 case 'G': /* Geometrically increasing intervals */
3980 case 'H': /* Ditto, but with randomness */
3981 rule
->p1
= retry_arg(&p
, 0);
3982 rule
->p2
= retry_arg(&p
, 1);
3986 log_write(0, LOG_PANIC_DIE
|LOG_CONFIG_IN
, "unknown retry rule letter");
3990 if (rule
->timeout
<= 0 || rule
->p1
<= 0 ||
3991 (rule
->rule
!= 'F' && rule
->p2
< 1000))
3992 log_write(0, LOG_PANIC_DIE
|LOG_CONFIG_IN
,
3993 "bad parameters for retry rule");
3995 while (isspace(*p
)) p
++;
3999 while (isspace(*p
)) p
++;
4002 log_write(0, LOG_PANIC_DIE
|LOG_CONFIG_IN
, "semicolon expected");
4009 /*************************************************
4010 * Initialize authenticators *
4011 *************************************************/
4013 /* Read the authenticators section of the configuration file.
4022 auth_instance
*au
, *bu
;
4023 readconf_driver_init(US
"authenticator",
4024 (driver_instance
**)(&auths
), /* chain anchor */
4025 (driver_info
*)auths_available
, /* available drivers */
4026 sizeof(auth_info
), /* size of info block */
4027 &auth_defaults
, /* default values for generic options */
4028 sizeof(auth_instance
), /* size of instance block */
4029 optionlist_auths
, /* generic options */
4030 optionlist_auths_size
);
4032 for (au
= auths
; au
!= NULL
; au
= au
->next
)
4034 if (au
->public_name
== NULL
)
4035 log_write(0, LOG_PANIC_DIE
|LOG_CONFIG
, "no public name specified for "
4036 "the %s authenticator", au
->name
);
4037 for (bu
= au
->next
; bu
!= NULL
; bu
= bu
->next
)
4039 if (strcmpic(au
->public_name
, bu
->public_name
) == 0)
4041 if ((au
->client
&& bu
->client
) || (au
->server
&& bu
->server
))
4042 log_write(0, LOG_PANIC_DIE
|LOG_CONFIG
, "two %s authenticators "
4043 "(%s and %s) have the same public name (%s)",
4044 (au
->client
)? US
"client" : US
"server", au
->name
, bu
->name
,
4054 /*************************************************
4055 * Read ACL information *
4056 *************************************************/
4058 /* If this run of Exim is not doing something that involves receiving a
4059 message, we can just skip over the ACL information. No need to parse it.
4061 First, we have a function for acl_read() to call back to get the next line. We
4062 need to remember the line we passed, because at the end it will contain the
4063 name of the next ACL. */
4065 static uschar
*acl_line
;
4070 acl_line
= get_config_line();
4075 /* Now the main function:
4086 /* Read each ACL and add it into the tree. Macro (re)definitions are allowed
4089 acl_line
= get_config_line();
4091 while(acl_line
!= NULL
)
4097 p
= readconf_readname(name
, sizeof(name
), acl_line
);
4098 if (isupper(*name
) && *p
== '=')
4100 read_macro_assignment(acl_line
);
4101 acl_line
= get_config_line();
4105 if (*p
!= ':' || name
[0] == 0)
4106 log_write(0, LOG_PANIC_DIE
|LOG_CONFIG_IN
, "missing or malformed ACL name");
4108 node
= store_get(sizeof(tree_node
) + Ustrlen(name
));
4109 Ustrcpy(node
->name
, name
);
4110 if (!tree_insertnode(&acl_anchor
, node
))
4111 log_write(0, LOG_PANIC_DIE
|LOG_CONFIG_IN
,
4112 "there are two ACLs called \"%s\"", name
);
4114 node
->data
.ptr
= acl_read(acl_callback
, &error
);
4116 if (node
->data
.ptr
== NULL
&& error
!= NULL
)
4117 log_write(0, LOG_PANIC_DIE
|LOG_CONFIG_IN
, "error in ACL: %s", error
);
4123 /*************************************************
4124 * Read configuration for local_scan() *
4125 *************************************************/
4127 /* This function is called after "begin local_scan" is encountered in the
4128 configuration file. If the local_scan() function allows for configuration
4129 options, we can process them. Otherwise, we expire in a panic.
4136 local_scan_init(void)
4138 #ifndef LOCAL_SCAN_HAS_OPTIONS
4139 log_write(0, LOG_PANIC_DIE
|LOG_CONFIG_IN
, "local_scan() options not supported: "
4140 "(LOCAL_SCAN_HAS_OPTIONS not defined in Local/Makefile)");
4144 while ((p
= get_config_line()) != NULL
)
4146 (void) readconf_handle_option(p
, local_scan_options
, local_scan_options_count
,
4147 NULL
, US
"local_scan option \"%s\" unknown");
4154 /*************************************************
4155 * Read rest of configuration (after main) *
4156 *************************************************/
4158 /* This function reads the rest of the runtime configuration, after the main
4159 configuration. It is called only when actually needed. Each subsequent section
4160 of the configuration starts with a line of the form
4164 where the name is "routers", "transports", etc. A section is terminated by
4165 hitting the next "begin" line, and the next name is left in next_section.
4166 Because it may confuse people as to whether the names are singular or plural,
4167 we add "s" if it's missing. There is always enough room in next_section for
4168 this. This function is basically just a switch.
4174 static uschar
*section_list
[] = {
4188 while(next_section
[0] != 0)
4192 int last
= sizeof(section_list
) / sizeof(uschar
*);
4194 int n
= Ustrlen(next_section
);
4196 if (tolower(next_section
[n
-1]) != 's') Ustrcpy(next_section
+n
, "s");
4200 int c
= strcmpic(next_section
, section_list
[mid
]);
4202 if (c
> 0) first
= mid
+ 1; else last
= mid
;
4204 log_write(0, LOG_PANIC_DIE
|LOG_CONFIG_IN
,
4205 "\"%.*s\" is not a known configuration section name", n
, next_section
);
4206 mid
= (last
+ first
)/2;
4210 if (((had
^= bit
) & bit
) == 0)
4211 log_write(0, LOG_PANIC_DIE
|LOG_CONFIG_IN
,
4212 "\"%.*s\" section is repeated in the configuration file", n
,
4217 case 0: readconf_acl(); break;
4218 case 1: auths_init(); break;
4219 case 2: local_scan_init(); break;
4220 case 3: readconf_retries(); break;
4221 case 4: readconf_rewrites(); break;
4222 case 5: route_init(); break;
4223 case 6: transport_init(); break;
4227 (void)fclose(config_file
);
4230 /* Init the storage for the pre-parsed config lines */
4232 readconf_save_config(const uschar
*s
)
4234 save_config_line(string_sprintf("# Exim Configuration (%s)",
4235 running_in_test_harness
? US
"X" : s
));
4239 save_config_position(const uschar
*file
, int line
)
4241 save_config_line(string_sprintf("# %d \"%s\"", line
, file
));
4244 /* Append a pre-parsed logical line to the config lines store,
4245 this operates on a global (static) list that holds all the pre-parsed
4248 save_config_line(const uschar
* line
)
4250 static config_line_item
*current
;
4251 config_line_item
*next
;
4253 next
= (config_line_item
*) store_get(sizeof(config_line_item
));
4254 next
->line
= string_copy(line
);
4257 if (!config_lines
) config_lines
= next
;
4258 else current
->next
= next
;
4263 /* List the parsed config lines, care about nice formatting and
4264 hide the <hide> values unless we're the admin user */
4266 print_config(BOOL admin
)
4268 config_line_item
*i
;
4272 for (i
= config_lines
; i
; i
= i
->next
)
4274 const uschar
*current
;
4277 /* skip over to the first non-space */
4278 for (current
= i
->line
; *current
&& isspace(*current
); ++current
)
4281 if (*current
== '\0')
4284 /* TODO: Collapse or insert spaces around the first '=' */
4287 if (current
[0] == '#')
4293 /* begin lines are left aligned */
4294 if (strncmp(current
, "begin", 5) == 0 && isspace(current
[5]))
4301 /* router/acl/transport block names */
4302 if (current
[strlen(current
)-1] == ':' && !strchr(current
, '='))
4304 printf("%*s%s\n", TS
, "", current
);
4309 /* as admin we don't care, as we do for "public" lines */
4310 if (admin
|| (!isupper(*current
) && (strcmp(current
, "hide") != 0)))
4312 printf("%*s%s\n", indent
, "", current
);
4317 if (p
= strchr(current
, '='))
4320 printf("%*s%s = %s\n", indent
, "", current
, hidden
);
4328 /* End of readconf.c */