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_linesize_limit", opt_mkint
, &bounce_return_linesize_limit
},
198 { "bounce_return_message", opt_bool
, &bounce_return_message
},
199 { "bounce_return_size_limit", opt_mkint
, &bounce_return_size_limit
},
200 { "bounce_sender_authentication",opt_stringptr
,&bounce_sender_authentication
},
201 { "callout_domain_negative_expire", opt_time
, &callout_cache_domain_negative_expire
},
202 { "callout_domain_positive_expire", opt_time
, &callout_cache_domain_positive_expire
},
203 { "callout_negative_expire", opt_time
, &callout_cache_negative_expire
},
204 { "callout_positive_expire", opt_time
, &callout_cache_positive_expire
},
205 { "callout_random_local_part",opt_stringptr
, &callout_random_local_part
},
206 { "check_log_inodes", opt_int
, &check_log_inodes
},
207 { "check_log_space", opt_Kint
, &check_log_space
},
208 { "check_rfc2047_length", opt_bool
, &check_rfc2047_length
},
209 { "check_spool_inodes", opt_int
, &check_spool_inodes
},
210 { "check_spool_space", opt_Kint
, &check_spool_space
},
211 { "daemon_smtp_port", opt_stringptr
|opt_hidden
, &daemon_smtp_port
},
212 { "daemon_smtp_ports", opt_stringptr
, &daemon_smtp_port
},
213 { "daemon_startup_retries", opt_int
, &daemon_startup_retries
},
214 { "daemon_startup_sleep", opt_time
, &daemon_startup_sleep
},
215 #ifdef EXPERIMENTAL_DCC
216 { "dcc_direct_add_header", opt_bool
, &dcc_direct_add_header
},
217 { "dccifd_address", opt_stringptr
, &dccifd_address
},
218 { "dccifd_options", opt_stringptr
, &dccifd_options
},
220 { "delay_warning", opt_timelist
, &delay_warning
},
221 { "delay_warning_condition", opt_stringptr
, &delay_warning_condition
},
222 { "deliver_drop_privilege", opt_bool
, &deliver_drop_privilege
},
223 { "deliver_queue_load_max", opt_fixed
, &deliver_queue_load_max
},
224 { "delivery_date_remove", opt_bool
, &delivery_date_remove
},
225 #ifdef ENABLE_DISABLE_FSYNC
226 { "disable_fsync", opt_bool
, &disable_fsync
},
228 { "disable_ipv6", opt_bool
, &disable_ipv6
},
230 { "dkim_verify_signers", opt_stringptr
, &dkim_verify_signers
},
232 #ifdef EXPERIMENTAL_DMARC
233 { "dmarc_forensic_sender", opt_stringptr
, &dmarc_forensic_sender
},
234 { "dmarc_history_file", opt_stringptr
, &dmarc_history_file
},
235 { "dmarc_tld_file", opt_stringptr
, &dmarc_tld_file
},
237 { "dns_again_means_nonexist", opt_stringptr
, &dns_again_means_nonexist
},
238 { "dns_check_names_pattern", opt_stringptr
, &check_dns_names_pattern
},
239 { "dns_csa_search_limit", opt_int
, &dns_csa_search_limit
},
240 { "dns_csa_use_reverse", opt_bool
, &dns_csa_use_reverse
},
241 { "dns_dnssec_ok", opt_int
, &dns_dnssec_ok
},
242 { "dns_ipv4_lookup", opt_stringptr
, &dns_ipv4_lookup
},
243 { "dns_retrans", opt_time
, &dns_retrans
},
244 { "dns_retry", opt_int
, &dns_retry
},
245 { "dns_trust_aa", opt_stringptr
, &dns_trust_aa
},
246 { "dns_use_edns0", opt_int
, &dns_use_edns0
},
247 /* This option is now a no-op, retained for compability */
248 { "drop_cr", opt_bool
, &drop_cr
},
249 /*********************************************************/
250 { "dsn_advertise_hosts", opt_stringptr
, &dsn_advertise_hosts
},
251 { "dsn_from", opt_stringptr
, &dsn_from
},
252 { "envelope_to_remove", opt_bool
, &envelope_to_remove
},
253 { "errors_copy", opt_stringptr
, &errors_copy
},
254 { "errors_reply_to", opt_stringptr
, &errors_reply_to
},
255 #ifndef DISABLE_EVENT
256 { "event_action", opt_stringptr
, &event_action
},
258 { "exim_group", opt_gid
, &exim_gid
},
259 { "exim_path", opt_stringptr
, &exim_path
},
260 { "exim_user", opt_uid
, &exim_uid
},
261 { "extra_local_interfaces", opt_stringptr
, &extra_local_interfaces
},
262 { "extract_addresses_remove_arguments", opt_bool
, &extract_addresses_remove_arguments
},
263 { "finduser_retries", opt_int
, &finduser_retries
},
264 { "freeze_tell", opt_stringptr
, &freeze_tell
},
265 { "gecos_name", opt_stringptr
, &gecos_name
},
266 { "gecos_pattern", opt_stringptr
, &gecos_pattern
},
268 { "gnutls_allow_auto_pkcs11", opt_bool
, &gnutls_allow_auto_pkcs11
},
269 { "gnutls_compat_mode", opt_bool
, &gnutls_compat_mode
},
270 /* These three gnutls_require_* options stopped working in Exim 4.80 */
271 /* From 4.83 we log a warning; a future relase will remove them */
272 { "gnutls_require_kx", opt_stringptr
, &gnutls_require_kx
},
273 { "gnutls_require_mac", opt_stringptr
, &gnutls_require_mac
},
274 { "gnutls_require_protocols", opt_stringptr
, &gnutls_require_proto
},
276 { "header_line_maxsize", opt_int
, &header_line_maxsize
},
277 { "header_maxsize", opt_int
, &header_maxsize
},
278 { "headers_charset", opt_stringptr
, &headers_charset
},
279 { "helo_accept_junk_hosts", opt_stringptr
, &helo_accept_junk_hosts
},
280 { "helo_allow_chars", opt_stringptr
, &helo_allow_chars
},
281 { "helo_lookup_domains", opt_stringptr
, &helo_lookup_domains
},
282 { "helo_try_verify_hosts", opt_stringptr
, &helo_try_verify_hosts
},
283 { "helo_verify_hosts", opt_stringptr
, &helo_verify_hosts
},
284 { "hold_domains", opt_stringptr
, &hold_domains
},
285 { "host_lookup", opt_stringptr
, &host_lookup
},
286 { "host_lookup_order", opt_stringptr
, &host_lookup_order
},
287 { "host_reject_connection", opt_stringptr
, &host_reject_connection
},
288 { "hosts_connection_nolog", opt_stringptr
, &hosts_connection_nolog
},
290 { "hosts_proxy", opt_stringptr
, &hosts_proxy
},
292 { "hosts_treat_as_local", opt_stringptr
, &hosts_treat_as_local
},
294 { "ibase_servers", opt_stringptr
, &ibase_servers
},
296 { "ignore_bounce_errors_after", opt_time
, &ignore_bounce_errors_after
},
297 { "ignore_fromline_hosts", opt_stringptr
, &ignore_fromline_hosts
},
298 { "ignore_fromline_local", opt_bool
, &ignore_fromline_local
},
299 { "keep_malformed", opt_time
, &keep_malformed
},
301 { "ldap_ca_cert_dir", opt_stringptr
, &eldap_ca_cert_dir
},
302 { "ldap_ca_cert_file", opt_stringptr
, &eldap_ca_cert_file
},
303 { "ldap_cert_file", opt_stringptr
, &eldap_cert_file
},
304 { "ldap_cert_key", opt_stringptr
, &eldap_cert_key
},
305 { "ldap_cipher_suite", opt_stringptr
, &eldap_cipher_suite
},
306 { "ldap_default_servers", opt_stringptr
, &eldap_default_servers
},
307 { "ldap_require_cert", opt_stringptr
, &eldap_require_cert
},
308 { "ldap_start_tls", opt_bool
, &eldap_start_tls
},
309 { "ldap_version", opt_int
, &eldap_version
},
311 { "local_from_check", opt_bool
, &local_from_check
},
312 { "local_from_prefix", opt_stringptr
, &local_from_prefix
},
313 { "local_from_suffix", opt_stringptr
, &local_from_suffix
},
314 { "local_interfaces", opt_stringptr
, &local_interfaces
},
315 { "local_scan_timeout", opt_time
, &local_scan_timeout
},
316 { "local_sender_retain", opt_bool
, &local_sender_retain
},
317 { "localhost_number", opt_stringptr
, &host_number_string
},
318 { "log_file_path", opt_stringptr
, &log_file_path
},
319 { "log_selector", opt_stringptr
, &log_selector_string
},
320 { "log_timezone", opt_bool
, &log_timezone
},
321 { "lookup_open_max", opt_int
, &lookup_open_max
},
322 { "max_username_length", opt_int
, &max_username_length
},
323 { "message_body_newlines", opt_bool
, &message_body_newlines
},
324 { "message_body_visible", opt_mkint
, &message_body_visible
},
325 { "message_id_header_domain", opt_stringptr
, &message_id_domain
},
326 { "message_id_header_text", opt_stringptr
, &message_id_text
},
327 { "message_logs", opt_bool
, &message_logs
},
328 { "message_size_limit", opt_stringptr
, &message_size_limit
},
329 #ifdef SUPPORT_MOVE_FROZEN_MESSAGES
330 { "move_frozen_messages", opt_bool
, &move_frozen_messages
},
332 { "mua_wrapper", opt_bool
, &mua_wrapper
},
334 { "mysql_servers", opt_stringptr
, &mysql_servers
},
336 { "never_users", opt_uidlist
, &never_users
},
338 { "openssl_options", opt_stringptr
, &openssl_options
},
341 { "oracle_servers", opt_stringptr
, &oracle_servers
},
343 { "percent_hack_domains", opt_stringptr
, &percent_hack_domains
},
345 { "perl_at_start", opt_bool
, &opt_perl_at_start
},
346 { "perl_startup", opt_stringptr
, &opt_perl_startup
},
349 { "pgsql_servers", opt_stringptr
, &pgsql_servers
},
351 { "pid_file_path", opt_stringptr
, &pid_file_path
},
352 { "pipelining_advertise_hosts", opt_stringptr
, &pipelining_advertise_hosts
},
354 { "prdr_enable", opt_bool
, &prdr_enable
},
356 { "preserve_message_logs", opt_bool
, &preserve_message_logs
},
357 { "primary_hostname", opt_stringptr
, &primary_hostname
},
358 { "print_topbitchars", opt_bool
, &print_topbitchars
},
359 { "process_log_path", opt_stringptr
, &process_log_path
},
360 { "prod_requires_admin", opt_bool
, &prod_requires_admin
},
361 { "qualify_domain", opt_stringptr
, &qualify_domain_sender
},
362 { "qualify_recipient", opt_stringptr
, &qualify_domain_recipient
},
363 { "queue_domains", opt_stringptr
, &queue_domains
},
364 { "queue_list_requires_admin",opt_bool
, &queue_list_requires_admin
},
365 { "queue_only", opt_bool
, &queue_only
},
366 { "queue_only_file", opt_stringptr
, &queue_only_file
},
367 { "queue_only_load", opt_fixed
, &queue_only_load
},
368 { "queue_only_load_latch", opt_bool
, &queue_only_load_latch
},
369 { "queue_only_override", opt_bool
, &queue_only_override
},
370 { "queue_run_in_order", opt_bool
, &queue_run_in_order
},
371 { "queue_run_max", opt_int
, &queue_run_max
},
372 { "queue_smtp_domains", opt_stringptr
, &queue_smtp_domains
},
373 { "receive_timeout", opt_time
, &receive_timeout
},
374 { "received_header_text", opt_stringptr
, &received_header_text
},
375 { "received_headers_max", opt_int
, &received_headers_max
},
376 { "recipient_unqualified_hosts", opt_stringptr
, &recipient_unqualified_hosts
},
377 { "recipients_max", opt_int
, &recipients_max
},
378 { "recipients_max_reject", opt_bool
, &recipients_max_reject
},
380 { "redis_servers", opt_stringptr
, &redis_servers
},
382 { "remote_max_parallel", opt_int
, &remote_max_parallel
},
383 { "remote_sort_domains", opt_stringptr
, &remote_sort_domains
},
384 { "retry_data_expire", opt_time
, &retry_data_expire
},
385 { "retry_interval_max", opt_time
, &retry_interval_max
},
386 { "return_path_remove", opt_bool
, &return_path_remove
},
387 { "return_size_limit", opt_mkint
|opt_hidden
, &bounce_return_size_limit
},
388 { "rfc1413_hosts", opt_stringptr
, &rfc1413_hosts
},
389 { "rfc1413_query_timeout", opt_time
, &rfc1413_query_timeout
},
390 { "sender_unqualified_hosts", opt_stringptr
, &sender_unqualified_hosts
},
391 { "slow_lookup_log", opt_int
, &slow_lookup_log
},
392 { "smtp_accept_keepalive", opt_bool
, &smtp_accept_keepalive
},
393 { "smtp_accept_max", opt_int
, &smtp_accept_max
},
394 { "smtp_accept_max_nonmail", opt_int
, &smtp_accept_max_nonmail
},
395 { "smtp_accept_max_nonmail_hosts", opt_stringptr
, &smtp_accept_max_nonmail_hosts
},
396 { "smtp_accept_max_per_connection", opt_int
, &smtp_accept_max_per_connection
},
397 { "smtp_accept_max_per_host", opt_stringptr
, &smtp_accept_max_per_host
},
398 { "smtp_accept_queue", opt_int
, &smtp_accept_queue
},
399 { "smtp_accept_queue_per_connection", opt_int
, &smtp_accept_queue_per_connection
},
400 { "smtp_accept_reserve", opt_int
, &smtp_accept_reserve
},
401 { "smtp_active_hostname", opt_stringptr
, &raw_active_hostname
},
402 { "smtp_banner", opt_stringptr
, &smtp_banner
},
403 { "smtp_check_spool_space", opt_bool
, &smtp_check_spool_space
},
404 { "smtp_connect_backlog", opt_int
, &smtp_connect_backlog
},
405 { "smtp_enforce_sync", opt_bool
, &smtp_enforce_sync
},
406 { "smtp_etrn_command", opt_stringptr
, &smtp_etrn_command
},
407 { "smtp_etrn_serialize", opt_bool
, &smtp_etrn_serialize
},
408 { "smtp_load_reserve", opt_fixed
, &smtp_load_reserve
},
409 { "smtp_max_synprot_errors", opt_int
, &smtp_max_synprot_errors
},
410 { "smtp_max_unknown_commands",opt_int
, &smtp_max_unknown_commands
},
411 { "smtp_ratelimit_hosts", opt_stringptr
, &smtp_ratelimit_hosts
},
412 { "smtp_ratelimit_mail", opt_stringptr
, &smtp_ratelimit_mail
},
413 { "smtp_ratelimit_rcpt", opt_stringptr
, &smtp_ratelimit_rcpt
},
414 { "smtp_receive_timeout", opt_func
, &fn_smtp_receive_timeout
},
415 { "smtp_reserve_hosts", opt_stringptr
, &smtp_reserve_hosts
},
416 { "smtp_return_error_details",opt_bool
, &smtp_return_error_details
},
418 { "smtputf8_advertise_hosts", opt_stringptr
, &smtputf8_advertise_hosts
},
420 #ifdef WITH_CONTENT_SCAN
421 { "spamd_address", opt_stringptr
, &spamd_address
},
423 #ifdef EXPERIMENTAL_SPF
424 { "spf_guess", opt_stringptr
, &spf_guess
},
426 { "split_spool_directory", opt_bool
, &split_spool_directory
},
427 { "spool_directory", opt_stringptr
, &spool_directory
},
429 { "sqlite_lock_timeout", opt_int
, &sqlite_lock_timeout
},
431 #ifdef EXPERIMENTAL_SRS
432 { "srs_config", opt_stringptr
, &srs_config
},
433 { "srs_hashlength", opt_int
, &srs_hashlength
},
434 { "srs_hashmin", opt_int
, &srs_hashmin
},
435 { "srs_maxage", opt_int
, &srs_maxage
},
436 { "srs_secrets", opt_stringptr
, &srs_secrets
},
437 { "srs_usehash", opt_bool
, &srs_usehash
},
438 { "srs_usetimestamp", opt_bool
, &srs_usetimestamp
},
440 { "strict_acl_vars", opt_bool
, &strict_acl_vars
},
441 { "strip_excess_angle_brackets", opt_bool
, &strip_excess_angle_brackets
},
442 { "strip_trailing_dot", opt_bool
, &strip_trailing_dot
},
443 { "syslog_duplication", opt_bool
, &syslog_duplication
},
444 { "syslog_facility", opt_stringptr
, &syslog_facility_str
},
445 { "syslog_processname", opt_stringptr
, &syslog_processname
},
446 { "syslog_timestamp", opt_bool
, &syslog_timestamp
},
447 { "system_filter", opt_stringptr
, &system_filter
},
448 { "system_filter_directory_transport", opt_stringptr
,&system_filter_directory_transport
},
449 { "system_filter_file_transport",opt_stringptr
,&system_filter_file_transport
},
450 { "system_filter_group", opt_gid
, &system_filter_gid
},
451 { "system_filter_pipe_transport",opt_stringptr
,&system_filter_pipe_transport
},
452 { "system_filter_reply_transport",opt_stringptr
,&system_filter_reply_transport
},
453 { "system_filter_user", opt_uid
, &system_filter_uid
},
454 { "tcp_nodelay", opt_bool
, &tcp_nodelay
},
455 #ifdef USE_TCP_WRAPPERS
456 { "tcp_wrappers_daemon_name", opt_stringptr
, &tcp_wrappers_daemon_name
},
458 { "timeout_frozen_after", opt_time
, &timeout_frozen_after
},
459 { "timezone", opt_stringptr
, &timezone_string
},
460 { "tls_advertise_hosts", opt_stringptr
, &tls_advertise_hosts
},
462 { "tls_certificate", opt_stringptr
, &tls_certificate
},
463 { "tls_crl", opt_stringptr
, &tls_crl
},
464 { "tls_dh_max_bits", opt_int
, &tls_dh_max_bits
},
465 { "tls_dhparam", opt_stringptr
, &tls_dhparam
},
466 { "tls_eccurve", opt_stringptr
, &tls_eccurve
},
467 # ifndef DISABLE_OCSP
468 { "tls_ocsp_file", opt_stringptr
, &tls_ocsp_file
},
470 { "tls_on_connect_ports", opt_stringptr
, &tls_in
.on_connect_ports
},
471 { "tls_privatekey", opt_stringptr
, &tls_privatekey
},
472 { "tls_remember_esmtp", opt_bool
, &tls_remember_esmtp
},
473 { "tls_require_ciphers", opt_stringptr
, &tls_require_ciphers
},
474 { "tls_try_verify_hosts", opt_stringptr
, &tls_try_verify_hosts
},
475 { "tls_verify_certificates", opt_stringptr
, &tls_verify_certificates
},
476 { "tls_verify_hosts", opt_stringptr
, &tls_verify_hosts
},
478 { "trusted_groups", opt_gidlist
, &trusted_groups
},
479 { "trusted_users", opt_uidlist
, &trusted_users
},
480 { "unknown_login", opt_stringptr
, &unknown_login
},
481 { "unknown_username", opt_stringptr
, &unknown_username
},
482 { "untrusted_set_sender", opt_stringptr
, &untrusted_set_sender
},
483 { "uucp_from_pattern", opt_stringptr
, &uucp_from_pattern
},
484 { "uucp_from_sender", opt_stringptr
, &uucp_from_sender
},
485 { "warn_message_file", opt_stringptr
, &warn_message_file
},
486 { "write_rejectlog", opt_bool
, &write_rejectlog
}
489 static int optionlist_config_size
=
490 sizeof(optionlist_config
)/sizeof(optionlist
);
494 /*************************************************
495 * Find the name of an option *
496 *************************************************/
498 /* This function is to aid debugging. Various functions take arguments that are
499 pointer variables in the options table or in option tables for various drivers.
500 For debugging output, it is useful to be able to find the name of the option
501 which is currently being processed. This function finds it, if it exists, by
502 searching the table(s).
504 Arguments: a value that is presumed to be in the table above
505 Returns: the option name, or an empty string
509 readconf_find_option(void *p
)
513 transport_instance
*t
;
515 for (i
= 0; i
< optionlist_config_size
; i
++)
516 if (p
== optionlist_config
[i
].value
) return US optionlist_config
[i
].name
;
518 for (r
= routers
; r
!= NULL
; r
= r
->next
)
520 router_info
*ri
= r
->info
;
521 for (i
= 0; i
< *ri
->options_count
; i
++)
523 if ((ri
->options
[i
].type
& opt_mask
) != opt_stringptr
) continue;
524 if (p
== (char *)(r
->options_block
) + (long int)(ri
->options
[i
].value
))
525 return US ri
->options
[i
].name
;
529 for (t
= transports
; t
!= NULL
; t
= t
->next
)
531 transport_info
*ti
= t
->info
;
532 for (i
= 0; i
< *ti
->options_count
; i
++)
534 optionlist
* op
= &ti
->options
[i
];
535 if ((op
->type
& opt_mask
) != opt_stringptr
) continue;
536 if (p
== ( op
->type
& opt_public
538 : (char *)t
->options_block
540 + (long int)op
->value
)
551 /*************************************************
552 * Deal with an assignment to a macro *
553 *************************************************/
555 /* This function is called when a line that starts with an upper case letter is
556 encountered. The argument "line" should contain a complete logical line, and
557 start with the first letter of the macro name. The macro name and the
558 replacement text are extracted and stored. Redefinition of existing,
559 non-command line, macros is permitted using '==' instead of '='.
562 s points to the start of the logical line
568 read_macro_assignment(uschar
*s
)
574 macro_item
*mlast
= NULL
;
576 while (isalnum(*s
) || *s
== '_')
578 if (namelen
>= sizeof(name
) - 1)
579 log_write(0, LOG_PANIC_DIE
|LOG_CONFIG_IN
,
580 "macro name too long (maximum is " SIZE_T_FMT
" characters)", sizeof(name
) - 1);
581 name
[namelen
++] = *s
++;
585 while (isspace(*s
)) s
++;
587 log_write(0, LOG_PANIC_DIE
|LOG_CONFIG_IN
, "malformed macro definition");
594 while (isspace(*s
)) s
++;
596 /* If an existing macro of the same name was defined on the command line, we
597 just skip this definition. It's an error to attempt to redefine a macro without
598 redef set to TRUE, or to redefine a macro when it hasn't been defined earlier.
599 It is also an error to define a macro whose name begins with the name of a
600 previously defined macro. Note: it is documented that the other way round
603 for (m
= macros
; m
!= NULL
; m
= m
->next
)
605 int len
= Ustrlen(m
->name
);
607 if (Ustrcmp(m
->name
, name
) == 0)
609 if (!m
->command_line
&& !redef
)
610 log_write(0, LOG_CONFIG
|LOG_PANIC_DIE
, "macro \"%s\" is already "
611 "defined (use \"==\" if you want to redefine it", name
);
615 if (len
< namelen
&& Ustrstr(name
, m
->name
) != NULL
)
616 log_write(0, LOG_CONFIG
|LOG_PANIC_DIE
, "\"%s\" cannot be defined as "
617 "a macro because previously defined macro \"%s\" is a substring",
620 /* We cannot have this test, because it is documented that a substring
621 macro is permitted (there is even an example).
623 * if (len > namelen && Ustrstr(m->name, name) != NULL)
624 * log_write(0, LOG_CONFIG|LOG_PANIC_DIE, "\"%s\" cannot be defined as "
625 * "a macro because it is a substring of previously defined macro \"%s\"",
632 /* Check for an overriding command-line definition. */
634 if (m
!= NULL
&& m
->command_line
) return;
636 /* Redefinition must refer to an existing macro. */
641 log_write(0, LOG_CONFIG
|LOG_PANIC_DIE
, "can't redefine an undefined macro "
645 /* We have a new definition. The macro_item structure includes a final vector
646 called "name" which is one byte long. Thus, adding "namelen" gives us enough
647 room to store the "name" string. */
651 m
= store_get(sizeof(macro_item
) + namelen
);
652 if (macros
== NULL
) macros
= m
; else mlast
->next
= m
;
653 Ustrncpy(m
->name
, name
, namelen
);
654 m
->name
[namelen
] = 0;
656 m
->command_line
= FALSE
;
659 /* Set the value of the new or redefined macro */
661 m
->replacement
= string_copy(s
);
668 /*************************************************
669 * Read configuration line *
670 *************************************************/
672 /* A logical line of text is read from the configuration file into the big
673 buffer, taking account of macros, .includes, and continuations. The size of
674 big_buffer is increased if necessary. The count of configuration lines is
675 maintained. Physical input lines starting with # (ignoring leading white space,
676 and after macro replacement) and empty logical lines are always ignored.
677 Leading and trailing spaces are removed.
679 If we hit a line of the form "begin xxxx", the xxxx is placed in the
680 next_section vector, and the function returns NULL, indicating the end of a
681 configuration section. On end-of-file, NULL is returned with next_section
686 Returns: a pointer to the first non-blank in the line,
687 or NULL if eof or end of section is reached
691 get_config_line(void)
693 int startoffset
= 0; /* To first non-blank char in logical line */
694 int len
= 0; /* Of logical line so far */
700 /* Loop for handling continuation lines, skipping comments, and dealing with
705 if (Ufgets(big_buffer
+len
, big_buffer_size
-len
, config_file
) == NULL
)
707 if (config_file_stack
!= NULL
) /* EOF inside .include */
709 (void)fclose(config_file
);
710 config_file
= config_file_stack
->file
;
711 config_filename
= config_file_stack
->filename
;
712 config_lineno
= config_file_stack
->lineno
;
713 config_file_stack
= config_file_stack
->next
;
715 save_config_position(config_filename
, config_lineno
);
719 /* EOF at top level */
721 if (cstate_stack_ptr
>= 0)
722 log_write(0, LOG_PANIC_DIE
|LOG_CONFIG_IN
,
723 "Unexpected end of configuration file: .endif missing");
725 if (len
!= 0) break; /* EOF after continuation */
726 next_section
[0] = 0; /* EOF at start of logical line */
731 newlen
= len
+ Ustrlen(big_buffer
+ len
);
733 if (config_lines
&& config_lineno
== 1)
734 save_config_position(config_filename
, config_lineno
);
736 /* Handle pathologically long physical lines - yes, it did happen - by
737 extending big_buffer at this point. The code also copes with very long
740 while (newlen
== big_buffer_size
- 1 && big_buffer
[newlen
- 1] != '\n')
743 big_buffer_size
+= BIG_BUFFER_SIZE
;
744 newbuffer
= store_malloc(big_buffer_size
);
746 /* This use of strcpy is OK because we know that the string in the old
747 buffer is shorter than the new buffer. */
749 Ustrcpy(newbuffer
, big_buffer
);
750 store_free(big_buffer
);
751 big_buffer
= newbuffer
;
752 if (Ufgets(big_buffer
+newlen
, big_buffer_size
-newlen
, config_file
) == NULL
)
754 newlen
+= Ustrlen(big_buffer
+ newlen
);
757 /* Find the true start of the physical line - leading spaces are always
760 ss
= big_buffer
+ len
;
761 while (isspace(*ss
)) ss
++;
763 /* Process the physical line for macros. If this is the start of the logical
764 line, skip over initial text at the start of the line if it starts with an
765 upper case character followed by a sequence of name characters and an equals
766 sign, because that is the definition of a new macro, and we don't do
767 replacement therein. */
770 if (len
== 0 && isupper(*s
))
772 while (isalnum(*s
) || *s
== '_') s
++;
773 while (isspace(*s
)) s
++;
774 if (*s
!= '=') s
= ss
; /* Not a macro definition */
777 /* For each defined macro, scan the line (from after XXX= if present),
778 replacing all occurrences of the macro. */
781 for (m
= macros
; m
!= NULL
; m
= m
->next
)
786 while ((p
= Ustrstr(t
, m
->name
)) != NULL
)
789 int namelen
= Ustrlen(m
->name
);
790 int replen
= Ustrlen(m
->replacement
);
792 /* Expand the buffer if necessary */
794 while (newlen
- namelen
+ replen
+ 1 > big_buffer_size
)
796 int newsize
= big_buffer_size
+ BIG_BUFFER_SIZE
;
797 uschar
*newbuffer
= store_malloc(newsize
);
798 memcpy(newbuffer
, big_buffer
, newlen
+ 1);
799 p
= newbuffer
+ (p
- big_buffer
);
800 s
= newbuffer
+ (s
- big_buffer
);
801 ss
= newbuffer
+ (ss
- big_buffer
);
802 t
= newbuffer
+ (t
- big_buffer
);
803 big_buffer_size
= newsize
;
804 store_free(big_buffer
);
805 big_buffer
= newbuffer
;
808 /* Shuffle the remaining characters up or down in the buffer before
809 copying in the replacement text. Don't rescan the replacement for this
813 moveby
= replen
- namelen
;
816 memmove(p
+ replen
, pp
, (big_buffer
+ newlen
) - pp
+ 1);
819 Ustrncpy(p
, m
->replacement
, replen
);
825 /* An empty macro replacement at the start of a line could mean that ss no
826 longer points to the first non-blank character. */
828 while (isspace(*ss
)) ss
++;
830 /* Check for comment lines - these are physical lines. */
832 if (*ss
== '#') continue;
834 /* Handle conditionals, which are also applied to physical lines. Conditions
835 are of the form ".ifdef ANYTEXT" and are treated as true if any macro
836 expansion occured on the rest of the line. A preliminary test for the leading
837 '.' saves effort on most lines. */
843 /* Search the list of conditional directives */
845 for (i
= 0; i
< cond_list_size
; i
++)
848 cond_item
*c
= cond_list
+i
;
849 if (Ustrncmp(ss
+1, c
->name
, c
->namelen
) != 0) continue;
851 /* The following character must be white space or end of string */
853 n
= ss
[1 + c
->namelen
];
854 if (n
!= ' ' && n
!= 't' && n
!= '\n' && n
!= 0) break;
856 /* .ifdef and .ifndef push the current state onto the stack, then set
857 a new one from the table. Stack overflow is an error */
861 if (cstate_stack_ptr
>= CSTATE_STACK_SIZE
- 1)
862 log_write(0, LOG_PANIC_DIE
|LOG_CONFIG_IN
,
863 ".%s nested too deeply", c
->name
);
864 cstate_stack
[++cstate_stack_ptr
] = cstate
;
865 cstate
= next_cstate
[cstate
][macro_found
? c
->action1
: c
->action2
];
868 /* For any of the others, stack underflow is an error. The next state
869 comes either from the stack (.endif) or from the table. */
873 if (cstate_stack_ptr
< 0)
874 log_write(0, LOG_PANIC_DIE
|LOG_CONFIG_IN
,
875 ".%s without matching .ifdef", c
->name
);
876 cstate
= (c
->pushpop
< 0)? cstate_stack
[cstate_stack_ptr
--] :
877 next_cstate
[cstate
][macro_found
? c
->action1
: c
->action2
];
880 /* Having dealt with a directive, break the loop */
885 /* If we have handled a conditional directive, continue with the next
886 physical line. Otherwise, fall through. */
888 if (i
< cond_list_size
) continue;
891 /* If the conditional state is not 0 (actively using these lines), ignore
894 if (cstate
!= 0) continue; /* Conditional skip */
896 /* Handle .include lines - these are also physical lines. */
898 if (Ustrncmp(ss
, ".include", 8) == 0 &&
900 (Ustrncmp(ss
+8, "_if_exists", 10) == 0 && isspace(ss
[18]))))
903 int include_if_exists
= isspace(ss
[8])? 0 : 10;
904 config_file_item
*save
;
907 ss
+= 9 + include_if_exists
;
908 while (isspace(*ss
)) ss
++;
909 t
= ss
+ Ustrlen(ss
);
910 while (t
> ss
&& isspace(t
[-1])) t
--;
911 if (*ss
== '\"' && t
[-1] == '\"')
919 log_write(0, LOG_PANIC_DIE
|LOG_CONFIG_IN
, ".include specifies a non-"
920 "absolute path \"%s\"", ss
);
922 if (include_if_exists
!= 0 && (Ustat(ss
, &statbuf
) != 0)) continue;
925 save_config_position(config_filename
, config_lineno
);
926 save
= store_get(sizeof(config_file_item
));
927 save
->next
= config_file_stack
;
928 config_file_stack
= save
;
929 save
->file
= config_file
;
930 save
->filename
= config_filename
;
931 save
->lineno
= config_lineno
;
933 config_file
= Ufopen(ss
, "rb");
934 if (config_file
== NULL
)
935 log_write(0, LOG_PANIC_DIE
|LOG_CONFIG_IN
, "failed to open included "
936 "configuration file %s", ss
);
937 config_filename
= string_copy(ss
);
942 /* If this is the start of the logical line, remember where the non-blank
943 data starts. Otherwise shuffle down continuation lines to remove leading
947 startoffset
= ss
- big_buffer
;
950 s
= big_buffer
+ len
;
953 memmove(s
, ss
, (newlen
- len
) - (ss
- s
) + 1);
958 /* Accept the new addition to the line. Remove trailing white space. */
961 while (len
> 0 && isspace(big_buffer
[len
-1])) len
--;
964 /* We are done if the line does not end in backslash and contains some data.
965 Empty logical lines are ignored. For continuations, remove the backslash and
966 go round the loop to read the continuation line. */
970 if (big_buffer
[len
-1] != '\\') break; /* End of logical line */
971 big_buffer
[--len
] = 0; /* Remove backslash */
973 } /* Loop for reading multiple physical lines */
975 /* We now have a logical line. Test for the end of a configuration section (or,
976 more accurately, for the start of the next section). Place the name of the next
977 section in next_section, and return NULL. If the name given is longer than
978 next_section, truncate it. It will be unrecognized later, because all the known
979 section names do fit. Leave space for pluralizing. */
981 s
= big_buffer
+ startoffset
; /* First non-space character */
986 if (strncmpic(s
, US
"begin ", 6) == 0)
989 while (isspace(*s
)) s
++;
990 if (big_buffer
+ len
- s
> sizeof(next_section
) - 2)
991 s
[sizeof(next_section
) - 2] = 0;
992 Ustrcpy(next_section
, s
);
996 /* Return the first non-blank character. */
1003 /*************************************************
1005 *************************************************/
1007 /* The yield is the pointer to the next uschar. Names longer than the
1008 output space are silently truncated. This function is also used from acl.c when
1012 name where to put the name
1016 Returns: new input pointer
1020 readconf_readname(uschar
*name
, int len
, uschar
*s
)
1023 while (isspace(*s
)) s
++;
1026 while (isalnum(*s
) || *s
== '_')
1028 if (p
< len
-1) name
[p
++] = *s
;
1033 while (isspace(*s
)) s
++;
1040 /*************************************************
1041 * Read a time value *
1042 *************************************************/
1044 /* This function is also called from outside, to read argument
1045 time values. The format of a time value is:
1047 [<n>w][<n>d][<n>h][<n>m][<n>s]
1049 as long as at least one is present. If a format error is encountered,
1050 return a negative value. The value must be terminated by the given
1055 terminator required terminating character
1056 return_msec if TRUE, allow fractional seconds and return milliseconds
1058 Returns: the time value, or -1 on syntax error
1059 value is seconds if return_msec is FALSE
1060 value is milliseconds if return_msec is TRUE
1064 readconf_readtime(const uschar
*s
, int terminator
, BOOL return_msec
)
1072 if (!isdigit(*s
)) return -1;
1073 (void)sscanf(CCS s
, "%d%n", &value
, &count
);
1078 case 'w': value
*= 7;
1079 case 'd': value
*= 24;
1080 case 'h': value
*= 60;
1081 case 'm': value
*= 60;
1086 if (!return_msec
) return -1;
1087 (void)sscanf(CCS s
, "%lf%n", &fraction
, &count
);
1089 if (*s
++ != 's') return -1;
1090 yield
+= (int)(fraction
* 1000.0);
1096 if (return_msec
) value
*= 1000;
1098 if (*s
== terminator
) return yield
;
1100 /* Control never reaches here. */
1105 /*************************************************
1106 * Read a fixed point value *
1107 *************************************************/
1109 /* The value is returned *1000
1113 terminator required terminator
1115 Returns: the value, or -1 on error
1119 readconf_readfixed(const uschar
*s
, int terminator
)
1123 if (!isdigit(*s
)) return -1;
1124 (void)sscanf(CS s
, "%d%n", &value
, &count
);
1126 yield
= value
* 1000;
1130 while (isdigit((*(++s
))))
1132 yield
+= (*s
- '0') * m
;
1137 return (*s
== terminator
)? yield
: (-1);
1142 /*************************************************
1143 * Find option in list *
1144 *************************************************/
1146 /* The lists are always in order, so binary chop can be used.
1149 name the option name to search for
1150 ol the first entry in the option list
1151 last one more than the offset of the last entry in the option list
1153 Returns: pointer to an option entry, or NULL if not found
1157 find_option(uschar
*name
, optionlist
*ol
, int last
)
1160 while (last
> first
)
1162 int middle
= (first
+ last
)/2;
1163 int c
= Ustrcmp(name
, ol
[middle
].name
);
1164 if (c
== 0) return ol
+ middle
;
1165 else if (c
> 0) first
= middle
+ 1;
1173 /*************************************************
1174 * Find a set flag in option list *
1175 *************************************************/
1177 /* Because some versions of Unix make no restrictions on the values of uids and
1178 gids (even negative ones), we cannot represent "unset" by a special value.
1179 There is therefore a separate boolean variable for each one indicating whether
1180 a value is set or not. This function returns a pointer to the boolean, given
1181 the original option name. It is a major disaster if the flag cannot be found.
1184 name the name of the uid or gid option
1185 oltop points to the start of the relevant option list
1186 last one more than the offset of the last item in the option list
1187 data_block NULL when reading main options => data values in the option
1188 list are absolute addresses; otherwise they are byte offsets
1189 in data_block (used for driver options)
1191 Returns: a pointer to the boolean flag.
1195 get_set_flag(uschar
*name
, optionlist
*oltop
, int last
, void *data_block
)
1199 sprintf(CS name2
, "*set_%.50s", name
);
1200 ol
= find_option(name2
, oltop
, last
);
1201 if (ol
== NULL
) log_write(0, LOG_MAIN
|LOG_PANIC_DIE
,
1202 "Exim internal error: missing set flag for %s", name
);
1203 return (data_block
== NULL
)? (BOOL
*)(ol
->value
) :
1204 (BOOL
*)((uschar
*)data_block
+ (long int)(ol
->value
));
1210 /*************************************************
1211 * Output extra characters message and die *
1212 *************************************************/
1214 /* Called when an option line has junk on the end. Sometimes this is because
1215 the sysadmin thinks comments are permitted.
1218 s points to the extra characters
1219 t1..t3 strings to insert in the log message
1221 Returns: doesn't return; dies
1225 extra_chars_error(const uschar
*s
, const uschar
*t1
, const uschar
*t2
, const uschar
*t3
)
1227 uschar
*comment
= US
"";
1228 if (*s
== '#') comment
= US
" (# is comment only at line start)";
1229 log_write(0, LOG_PANIC_DIE
|LOG_CONFIG_IN
,
1230 "extra characters follow %s%s%s%s", t1
, t2
, t3
, comment
);
1235 /*************************************************
1236 * Read rewrite information *
1237 *************************************************/
1239 /* Each line of rewrite information contains:
1241 . A complete address in the form user@domain, possibly with
1242 leading * for each part; or alternatively, a regex.
1244 . A replacement string (which will be expanded).
1246 . An optional sequence of one-letter flags, indicating which
1247 headers etc. to apply this rule to.
1249 All this is decoded and placed into a control block. The OR of the flags is
1250 maintained in a common word.
1253 p points to the string that makes up the rule
1254 existflags points to the overall flag word
1255 isglobal TRUE if reading global rewrite rules
1257 Returns: the control block for the parsed rule.
1260 static rewrite_rule
*
1261 readconf_one_rewrite(const uschar
*p
, int *existflags
, BOOL isglobal
)
1263 rewrite_rule
*next
= store_get(sizeof(rewrite_rule
));
1266 next
->key
= string_dequote(&p
);
1268 while (isspace(*p
)) p
++;
1270 log_write(0, LOG_PANIC_DIE
|LOG_CONFIG_IN
,
1271 "missing rewrite replacement string");
1274 next
->replacement
= string_dequote(&p
);
1276 while (*p
!= 0) switch (*p
++)
1278 case ' ': case '\t': break;
1280 case 'q': next
->flags
|= rewrite_quit
; break;
1281 case 'w': next
->flags
|= rewrite_whole
; break;
1283 case 'h': next
->flags
|= rewrite_all_headers
; break;
1284 case 's': next
->flags
|= rewrite_sender
; break;
1285 case 'f': next
->flags
|= rewrite_from
; break;
1286 case 't': next
->flags
|= rewrite_to
; break;
1287 case 'c': next
->flags
|= rewrite_cc
; break;
1288 case 'b': next
->flags
|= rewrite_bcc
; break;
1289 case 'r': next
->flags
|= rewrite_replyto
; break;
1291 case 'E': next
->flags
|= rewrite_all_envelope
; break;
1292 case 'F': next
->flags
|= rewrite_envfrom
; break;
1293 case 'T': next
->flags
|= rewrite_envto
; break;
1295 case 'Q': next
->flags
|= rewrite_qualify
; break;
1296 case 'R': next
->flags
|= rewrite_repeat
; break;
1299 next
->flags
|= rewrite_smtp
;
1300 if (next
->key
[0] != '^' && Ustrncmp(next
->key
, "\\N^", 3) != 0)
1301 log_write(0, LOG_PANIC_DIE
|LOG_CONFIG_IN
,
1302 "rewrite rule has the S flag but is not a regular expression");
1306 log_write(0, LOG_PANIC_DIE
|LOG_CONFIG_IN
,
1307 "unknown rewrite flag character '%c' "
1308 "(could be missing quotes round replacement item)", p
[-1]);
1312 /* If no action flags are set, set all the "normal" rewrites. */
1314 if ((next
->flags
& (rewrite_all
| rewrite_smtp
)) == 0)
1315 next
->flags
|= isglobal
? rewrite_all
: rewrite_all_headers
;
1317 /* Remember which exist, for optimization, and return the rule */
1319 *existflags
|= next
->flags
;
1326 /*************************************************
1327 * Read global rewrite information *
1328 *************************************************/
1330 /* Each line is a single rewrite rule; it is parsed into a control block
1331 by readconf_one_rewrite(), and its flags are ORed into the global flag
1332 word rewrite_existflags. */
1335 readconf_rewrites(void)
1337 rewrite_rule
**chain
= &global_rewrite_rules
;
1340 while ((p
= get_config_line()) != NULL
)
1342 rewrite_rule
*next
= readconf_one_rewrite(p
, &rewrite_existflags
, TRUE
);
1344 chain
= &(next
->next
);
1350 /*************************************************
1352 *************************************************/
1354 /* Strings are read into the normal store pool. As long we aren't too
1355 near the end of the current block, the string will just use what is necessary
1356 on the top of the stacking pool, because string_cat() uses the extension
1360 s the rest of the input line
1361 name the option name (for errors)
1363 Returns: pointer to the string
1367 read_string(const uschar
*s
, const uschar
*name
)
1372 if (*s
!= '\"') return string_copy(s
);
1375 yield
= string_dequote(&s
);
1377 if (s
== ss
+1 || s
[-1] != '\"')
1378 log_write(0, LOG_PANIC_DIE
|LOG_CONFIG_IN
,
1379 "missing quote at end of string value for %s", name
);
1381 if (*s
!= 0) extra_chars_error(s
, US
"string value for ", name
, US
"");
1387 /*************************************************
1388 * Custom-handler options *
1389 *************************************************/
1391 fn_smtp_receive_timeout(const uschar
* name
, const uschar
* str
)
1394 smtp_receive_timeout_s
= string_copy(str
);
1397 /* "smtp_receive_timeout", opt_time, &smtp_receive_timeout */
1398 smtp_receive_timeout
= readconf_readtime(str
, 0, FALSE
);
1399 if (smtp_receive_timeout
< 0)
1400 log_write(0, LOG_PANIC_DIE
|LOG_CONFIG_IN
, "invalid time value for %s",
1405 /*************************************************
1406 * Handle option line *
1407 *************************************************/
1409 /* This function is called from several places to process a line containing the
1410 setting of an option. The first argument is the line to be decoded; it has been
1411 checked not to be empty and not to start with '#'. Trailing newlines and white
1412 space have been removed. The second argument is a pointer to the list of
1413 variable names that are to be recognized, together with their types and
1414 locations, and the third argument gives the number of entries in the list.
1416 The fourth argument is a pointer to a data block. If it is NULL, then the data
1417 values in the options list are absolute addresses. Otherwise, they are byte
1418 offsets in the data block.
1420 String option data may continue onto several lines; this function reads further
1421 data from config_file if necessary.
1423 The yield of this function is normally zero. If a string continues onto
1424 multiple lines, then the data value is permitted to be followed by a comma
1425 or a semicolon (for use in drivers) and the yield is that character.
1428 buffer contains the configuration line to be handled
1429 oltop points to the start of the relevant option list
1430 last one more than the offset of the last item in the option list
1431 data_block NULL when reading main options => data values in the option
1432 list are absolute addresses; otherwise they are byte offsets
1433 in data_block when they have opt_public set; otherwise
1434 they are byte offsets in data_block->options_block.
1435 unknown_txt format string to use in panic message for unknown option;
1436 must contain %s for option name
1437 if given as NULL, don't panic on unknown option
1439 Returns: TRUE if an option was read successfully,
1440 FALSE false for an unknown option if unknown_txt == NULL,
1441 otherwise panic and die on an unknown option
1445 readconf_handle_option(uschar
*buffer
, optionlist
*oltop
, int last
,
1446 void *data_block
, uschar
*unknown_txt
)
1450 int n
, count
, type
, value
;
1454 BOOL boolvalue
= TRUE
;
1455 BOOL freesptr
= TRUE
;
1456 optionlist
*ol
, *ol2
;
1460 uschar
*inttype
= US
"";
1463 uschar
*saved_condition
, *strtemp
;
1464 uschar
**str_target
;
1468 /* There may be leading spaces; thereafter, we expect an option name starting
1471 while (isspace(*s
)) s
++;
1473 log_write(0, LOG_PANIC_DIE
|LOG_CONFIG_IN
, "option setting expected: %s", s
);
1475 /* Read the name of the option, and skip any subsequent white space. If
1476 it turns out that what we read was "hide", set the flag indicating that
1477 this is a secure option, and loop to read the next word. */
1479 for (n
= 0; n
< 2; n
++)
1481 while (isalnum(*s
) || *s
== '_')
1483 if (ptr
< sizeof(name
)-1) name
[ptr
++] = *s
;
1487 while (isspace(*s
)) s
++;
1488 if (Ustrcmp(name
, "hide") != 0) break;
1489 issecure
= opt_secure
;
1493 /* Deal with "no_" or "not_" here for booleans */
1495 if (Ustrncmp(name
, "no_", 3) == 0)
1501 if (Ustrncmp(name
, "not_", 4) == 0)
1507 /* Search the list for the given name. A non-existent name, or an option that
1508 is set twice, is a disaster. */
1510 ol
= find_option(name
+ offset
, oltop
, last
);
1514 if (unknown_txt
== NULL
) return FALSE
;
1515 log_write(0, LOG_PANIC_DIE
|LOG_CONFIG_IN
, CS unknown_txt
, name
);
1518 if ((ol
->type
& opt_set
) && !(ol
->type
& (opt_rep_con
| opt_rep_str
)))
1519 log_write(0, LOG_PANIC_DIE
|LOG_CONFIG_IN
,
1520 "\"%s\" option set for the second time", name
);
1522 ol
->type
|= opt_set
| issecure
;
1523 type
= ol
->type
& opt_mask
;
1525 /* Types with data values must be followed by '='; the "no[t]_" prefix
1526 applies only to boolean values. */
1528 if (type
< opt_bool
|| type
> opt_bool_last
)
1531 log_write(0, LOG_PANIC_DIE
|LOG_CONFIG_IN
,
1532 "negation prefix applied to a non-boolean option");
1534 log_write(0, LOG_PANIC_DIE
|LOG_CONFIG_IN
,
1535 "unexpected end of line (data missing) after %s", name
);
1537 log_write(0, LOG_PANIC_DIE
|LOG_CONFIG_IN
, "missing \"=\" after %s", name
);
1540 /* If a boolean wasn't preceded by "no[t]_" it can be followed by = and
1541 true/false/yes/no, or, in the case of opt_expand_bool, a general string that
1542 ultimately expands to one of those values. */
1544 else if (*s
!= 0 && (offset
!= 0 || *s
!= '='))
1545 extra_chars_error(s
, US
"boolean option ", name
, US
"");
1547 /* Skip white space after = */
1549 if (*s
== '=') while (isspace((*(++s
))));
1551 /* If there is a data block and the opt_public flag is not set, change
1552 the data block pointer to the private options block. */
1554 if (data_block
!= NULL
&& (ol
->type
& opt_public
) == 0)
1555 data_block
= (void *)(((driver_instance
*)data_block
)->options_block
);
1557 /* Now get the data according to the type. */
1561 /* If a string value is not enclosed in quotes, it consists of
1562 the rest of the current line, verbatim. Otherwise, string escapes
1565 A transport is specified as a string, which is then looked up in the
1566 list of transports. A search type is specified as one of a number of
1569 A set or rewrite rules for a driver is specified as a string, which is
1570 then parsed into a suitable chain of control blocks.
1572 Uids and gids are specified as strings which are then looked up in the
1573 passwd file. Lists of uids and gids are similarly specified as colon-
1574 separated strings. */
1579 case opt_expand_uid
:
1580 case opt_expand_gid
:
1585 reset_point
= sptr
= read_string(s
, name
);
1587 /* Having read a string, we now have several different ways of using it,
1588 depending on the data type, so do another switch. If keeping the actual
1589 string is not required (because it is interpreted), freesptr is set TRUE,
1590 and at the end we reset the pool. */
1594 /* If this was a string, set the variable to point to the new string,
1595 and set the flag so its store isn't reclaimed. If it was a list of rewrite
1596 rules, we still keep the string (for printing), and parse the rules into a
1597 control block and flags word. */
1600 if (data_block
== NULL
)
1601 str_target
= (uschar
**)(ol
->value
);
1603 str_target
= (uschar
**)((uschar
*)data_block
+ (long int)(ol
->value
));
1604 if (ol
->type
& opt_rep_con
)
1606 /* We already have a condition, we're conducting a crude hack to let
1607 multiple condition rules be chained together, despite storing them in
1609 saved_condition
= *str_target
;
1610 strtemp
= string_sprintf("${if and{{bool_lax{%s}}{bool_lax{%s}}}}",
1611 saved_condition
, sptr
);
1612 *str_target
= string_copy_malloc(strtemp
);
1613 /* TODO(pdp): there is a memory leak here and just below
1614 when we set 3 or more conditions; I still don't
1615 understand the store mechanism enough to know
1616 what's the safe way to free content from an earlier store.
1617 AFAICT, stores stack, so freeing an early stored item also stores
1618 all data alloc'd after it. If we knew conditions were adjacent,
1619 we could survive that, but we don't. So I *think* we need to take
1620 another bit from opt_type to indicate "malloced"; this seems like
1621 quite a hack, especially for this one case. It also means that
1622 we can't ever reclaim the store from the *first* condition.
1624 Because we only do this once, near process start-up, I'm prepared to
1625 let this slide for the time being, even though it rankles. */
1627 else if (ol
->type
& opt_rep_str
)
1629 uschar sep_o
= Ustrncmp(name
, "headers_add", 11)==0 ? '\n' : ':';
1630 int sep_i
= -(int)sep_o
;
1631 const uschar
* list
= sptr
;
1633 uschar
* list_o
= *str_target
;
1635 while ((s
= string_nextinlist(&list
, &sep_i
, NULL
, 0)))
1636 list_o
= string_append_listele(list_o
, sep_o
, s
);
1638 *str_target
= string_copy_malloc(list_o
);
1648 if (data_block
== NULL
)
1649 *((uschar
**)(ol
->value
)) = sptr
;
1651 *((uschar
**)((uschar
*)data_block
+ (long int)(ol
->value
))) = sptr
;
1653 if (type
== opt_rewrite
)
1658 rewrite_rule
**chain
;
1661 sprintf(CS name2
, "*%.50s_rules", name
);
1662 ol2
= find_option(name2
, oltop
, last
);
1663 sprintf(CS name2
, "*%.50s_flags", name
);
1664 ol3
= find_option(name2
, oltop
, last
);
1666 if (ol2
== NULL
|| ol3
== NULL
)
1667 log_write(0, LOG_PANIC_DIE
|LOG_CONFIG_IN
,
1668 "rewrite rules not available for driver");
1670 if (data_block
== NULL
)
1672 chain
= (rewrite_rule
**)(ol2
->value
);
1673 flagptr
= (int *)(ol3
->value
);
1677 chain
= (rewrite_rule
**)((uschar
*)data_block
+ (long int)(ol2
->value
));
1678 flagptr
= (int *)((uschar
*)data_block
+ (long int)(ol3
->value
));
1681 while ((p
= string_nextinlist(CUSS
&sptr
, &sep
, big_buffer
, BIG_BUFFER_SIZE
)))
1683 rewrite_rule
*next
= readconf_one_rewrite(p
, flagptr
, FALSE
);
1685 chain
= &(next
->next
);
1688 if ((*flagptr
& (rewrite_all_envelope
| rewrite_smtp
)) != 0)
1689 log_write(0, LOG_PANIC_DIE
|LOG_CONFIG_IN
, "rewrite rule specifies a "
1690 "non-header rewrite - not allowed at transport time -");
1694 /* If it was an expanded uid, see if there is any expansion to be
1695 done by checking for the presence of a $ character. If there is, save it
1696 in the corresponding *expand_user option field. Otherwise, fall through
1697 to treat it as a fixed uid. Ensure mutual exclusivity of the two kinds
1700 case opt_expand_uid
:
1701 sprintf(CS name2
, "*expand_%.50s", name
);
1702 ol2
= find_option(name2
, oltop
, last
);
1705 uschar
*ss
= (Ustrchr(sptr
, '$') != NULL
)? sptr
: NULL
;
1707 if (data_block
== NULL
)
1708 *((uschar
**)(ol2
->value
)) = ss
;
1710 *((uschar
**)((uschar
*)data_block
+ (long int)(ol2
->value
))) = ss
;
1714 *(get_set_flag(name
, oltop
, last
, data_block
)) = FALSE
;
1720 /* Look up a fixed uid, and also make use of the corresponding gid
1721 if a passwd entry is returned and the gid has not been set. */
1724 if (!route_finduser(sptr
, &pw
, &uid
))
1725 log_write(0, LOG_PANIC_DIE
|LOG_CONFIG_IN
, "user %s was not found", sptr
);
1726 if (data_block
== NULL
)
1727 *((uid_t
*)(ol
->value
)) = uid
;
1729 *((uid_t
*)((uschar
*)data_block
+ (long int)(ol
->value
))) = uid
;
1731 /* Set the flag indicating a fixed value is set */
1733 *(get_set_flag(name
, oltop
, last
, data_block
)) = TRUE
;
1735 /* Handle matching gid if we have a passwd entry: done by finding the
1736 same name with terminating "user" changed to "group"; if not found,
1737 ignore. Also ignore if the value is already set. */
1739 if (pw
== NULL
) break;
1740 Ustrcpy(name
+Ustrlen(name
)-4, "group");
1741 ol2
= find_option(name
, oltop
, last
);
1742 if (ol2
!= NULL
&& ((ol2
->type
& opt_mask
) == opt_gid
||
1743 (ol2
->type
& opt_mask
) == opt_expand_gid
))
1745 BOOL
*set_flag
= get_set_flag(name
, oltop
, last
, data_block
);
1748 if (data_block
== NULL
)
1749 *((gid_t
*)(ol2
->value
)) = pw
->pw_gid
;
1751 *((gid_t
*)((uschar
*)data_block
+ (long int)(ol2
->value
))) = pw
->pw_gid
;
1757 /* If it was an expanded gid, see if there is any expansion to be
1758 done by checking for the presence of a $ character. If there is, save it
1759 in the corresponding *expand_user option field. Otherwise, fall through
1760 to treat it as a fixed gid. Ensure mutual exclusivity of the two kinds
1763 case opt_expand_gid
:
1764 sprintf(CS name2
, "*expand_%.50s", name
);
1765 ol2
= find_option(name2
, oltop
, last
);
1768 uschar
*ss
= (Ustrchr(sptr
, '$') != NULL
)? sptr
: NULL
;
1770 if (data_block
== NULL
)
1771 *((uschar
**)(ol2
->value
)) = ss
;
1773 *((uschar
**)((uschar
*)data_block
+ (long int)(ol2
->value
))) = ss
;
1777 *(get_set_flag(name
, oltop
, last
, data_block
)) = FALSE
;
1783 /* Handle freestanding gid */
1786 if (!route_findgroup(sptr
, &gid
))
1787 log_write(0, LOG_PANIC_DIE
|LOG_CONFIG_IN
, "group %s was not found", sptr
);
1788 if (data_block
== NULL
)
1789 *((gid_t
*)(ol
->value
)) = gid
;
1791 *((gid_t
*)((uschar
*)data_block
+ (long int)(ol
->value
))) = gid
;
1792 *(get_set_flag(name
, oltop
, last
, data_block
)) = TRUE
;
1795 /* If it was a uid list, look up each individual entry, and build
1796 a vector of uids, with a count in the first element. Put the vector
1797 in malloc store so we can free the string. (We are reading into
1798 permanent store already.) */
1806 const uschar
*op
= expand_string (sptr
);
1809 log_write(0, LOG_PANIC_DIE
|LOG_CONFIG_IN
, "failed to expand %s: %s",
1810 name
, expand_string_message
);
1813 if (*p
!= 0) count
++;
1814 while (*p
!= 0) if (*p
++ == ':' && *p
!= 0) count
++;
1815 list
= store_malloc(count
*sizeof(uid_t
));
1816 list
[ptr
++] = (uid_t
)(count
- 1);
1818 if (data_block
== NULL
)
1819 *((uid_t
**)(ol
->value
)) = list
;
1821 *((uid_t
**)((uschar
*)data_block
+ (long int)(ol
->value
))) = list
;
1827 (void)string_nextinlist(&p
, &sep
, big_buffer
, BIG_BUFFER_SIZE
);
1828 if (!route_finduser(big_buffer
, NULL
, &uid
))
1829 log_write(0, LOG_PANIC_DIE
|LOG_CONFIG_IN
, "user %s was not found",
1836 /* If it was a gid list, look up each individual entry, and build
1837 a vector of gids, with a count in the first element. Put the vector
1838 in malloc store so we can free the string. (We are reading into permanent
1847 const uschar
*op
= expand_string (sptr
);
1850 log_write(0, LOG_PANIC_DIE
|LOG_CONFIG_IN
, "failed to expand %s: %s",
1851 name
, expand_string_message
);
1854 if (*p
!= 0) count
++;
1855 while (*p
!= 0) if (*p
++ == ':' && *p
!= 0) count
++;
1856 list
= store_malloc(count
*sizeof(gid_t
));
1857 list
[ptr
++] = (gid_t
)(count
- 1);
1859 if (data_block
== NULL
)
1860 *((gid_t
**)(ol
->value
)) = list
;
1862 *((gid_t
**)((uschar
*)data_block
+ (long int)(ol
->value
))) = list
;
1868 (void)string_nextinlist(&p
, &sep
, big_buffer
, BIG_BUFFER_SIZE
);
1869 if (!route_findgroup(big_buffer
, &gid
))
1870 log_write(0, LOG_PANIC_DIE
|LOG_CONFIG_IN
, "group %s was not found",
1878 /* Release store if the value of the string doesn't need to be kept. */
1880 if (freesptr
) store_reset(reset_point
);
1883 /* Expanded boolean: if no characters follow, or if there are no dollar
1884 characters, this is a fixed-valued boolean, and we fall through. Otherwise,
1885 save the string for later expansion in the alternate place. */
1887 case opt_expand_bool
:
1888 if (*s
!= 0 && Ustrchr(s
, '$') != 0)
1890 sprintf(CS name2
, "*expand_%.50s", name
);
1891 ol2
= find_option(name2
, oltop
, last
);
1894 reset_point
= sptr
= read_string(s
, name
);
1895 if (data_block
== NULL
)
1896 *((uschar
**)(ol2
->value
)) = sptr
;
1898 *((uschar
**)((uschar
*)data_block
+ (long int)(ol2
->value
))) = sptr
;
1905 /* Boolean: if no characters follow, the value is boolvalue. Otherwise
1906 look for yes/not/true/false. Some booleans are stored in a single bit in
1907 a single int. There's a special fudge for verify settings; without a suffix
1908 they set both xx_sender and xx_recipient. The table points to the sender
1909 value; search subsequently for the recipient. There's another special case:
1910 opt_bool_set also notes when a boolean has been set. */
1914 case opt_bool_verify
:
1918 s
= readconf_readname(name2
, 64, s
);
1919 if (strcmpic(name2
, US
"true") == 0 || strcmpic(name2
, US
"yes") == 0)
1921 else if (strcmpic(name2
, US
"false") == 0 || strcmpic(name2
, US
"no") == 0)
1923 else log_write(0, LOG_PANIC_DIE
|LOG_CONFIG_IN
,
1924 "\"%s\" is not a valid value for the \"%s\" option", name2
, name
);
1925 if (*s
!= 0) extra_chars_error(s
, string_sprintf("\"%s\" ", name2
),
1926 US
"for boolean option ", name
);
1929 /* Handle single-bit type. */
1931 if (type
== opt_bit
)
1933 int bit
= 1 << ((ol
->type
>> 16) & 31);
1934 int *ptr
= (data_block
== NULL
)?
1935 (int *)(ol
->value
) :
1936 (int *)((uschar
*)data_block
+ (long int)ol
->value
);
1937 if (boolvalue
) *ptr
|= bit
; else *ptr
&= ~bit
;
1941 /* Handle full BOOL types */
1943 if (data_block
== NULL
)
1944 *((BOOL
*)(ol
->value
)) = boolvalue
;
1946 *((BOOL
*)((uschar
*)data_block
+ (long int)(ol
->value
))) = boolvalue
;
1950 if (type
== opt_bool_verify
)
1952 sprintf(CS name2
, "%.50s_recipient", name
+ offset
);
1953 ol2
= find_option(name2
, oltop
, last
);
1956 if (data_block
== NULL
)
1957 *((BOOL
*)(ol2
->value
)) = boolvalue
;
1959 *((BOOL
*)((uschar
*)data_block
+ (long int)(ol2
->value
))) = boolvalue
;
1963 /* Note that opt_bool_set type is set, if there is somewhere to do so */
1965 else if (type
== opt_bool_set
)
1967 sprintf(CS name2
, "*set_%.50s", name
+ offset
);
1968 ol2
= find_option(name2
, oltop
, last
);
1971 if (data_block
== NULL
)
1972 *((BOOL
*)(ol2
->value
)) = TRUE
;
1974 *((BOOL
*)((uschar
*)data_block
+ (long int)(ol2
->value
))) = TRUE
;
1983 inttype
= US
"octal ";
1985 /* Integer: a simple(ish) case; allow octal and hex formats, and
1986 suffixes K and M. The different types affect output, not input. */
1995 lvalue
= strtol(CS s
, CSS
&endptr
, intbase
);
1998 log_write(0, LOG_PANIC_DIE
|LOG_CONFIG_IN
, "%sinteger expected for %s",
2001 if (errno
!= ERANGE
)
2003 if (tolower(*endptr
) == 'k')
2005 if (lvalue
> INT_MAX
/1024 || lvalue
< INT_MIN
/1024) errno
= ERANGE
;
2006 else lvalue
*= 1024;
2009 else if (tolower(*endptr
) == 'm')
2011 if (lvalue
> INT_MAX
/(1024*1024) || lvalue
< INT_MIN
/(1024*1024))
2013 else lvalue
*= 1024*1024;
2018 if (errno
== ERANGE
|| lvalue
> INT_MAX
|| lvalue
< INT_MIN
)
2019 log_write(0, LOG_PANIC_DIE
|LOG_CONFIG_IN
,
2020 "absolute value of integer \"%s\" is too large (overflow)", s
);
2022 while (isspace(*endptr
)) endptr
++;
2024 extra_chars_error(endptr
, inttype
, US
"integer value for ", name
);
2026 value
= (int)lvalue
;
2029 if (data_block
== NULL
)
2030 *((int *)(ol
->value
)) = value
;
2032 *((int *)((uschar
*)data_block
+ (long int)(ol
->value
))) = value
;
2035 /* Integer held in K: again, allow octal and hex formats, and suffixes K and
2042 value
= strtol(CS s
, CSS
&endptr
, intbase
);
2045 log_write(0, LOG_PANIC_DIE
|LOG_CONFIG_IN
, "%sinteger expected for %s",
2048 if (errno
!= ERANGE
)
2050 if (tolower(*endptr
) == 'm')
2052 if (value
> INT_MAX
/1024 || value
< INT_MIN
/1024) errno
= ERANGE
;
2056 else if (tolower(*endptr
) == 'k')
2062 value
= (value
+ 512)/1024;
2066 if (errno
== ERANGE
) log_write(0, LOG_PANIC_DIE
|LOG_CONFIG_IN
,
2067 "absolute value of integer \"%s\" is too large (overflow)", s
);
2069 while (isspace(*endptr
)) endptr
++;
2071 extra_chars_error(endptr
, inttype
, US
"integer value for ", name
);
2074 if (data_block
== NULL
)
2075 *((int *)(ol
->value
)) = value
;
2077 *((int *)((uschar
*)data_block
+ (long int)(ol
->value
))) = value
;
2080 /* Fixed-point number: held to 3 decimal places. */
2083 if (sscanf(CS s
, "%d%n", &value
, &count
) != 1)
2084 log_write(0, LOG_PANIC_DIE
|LOG_CONFIG_IN
,
2085 "fixed-point number expected for %s", name
);
2087 if (value
< 0) log_write(0, LOG_PANIC_DIE
|LOG_CONFIG_IN
,
2088 "integer \"%s\" is too large (overflow)", s
);
2092 if (value
< 0) log_write(0, LOG_PANIC_DIE
|LOG_CONFIG_IN
,
2093 "integer \"%s\" is too large (overflow)", s
);
2095 if (s
[count
] == '.')
2098 while (isdigit(s
[++count
]))
2100 value
+= (s
[count
] - '0') * d
;
2105 while (isspace(s
[count
])) count
++;
2108 extra_chars_error(s
+count
, US
"fixed-point value for ", name
, US
"");
2110 if (data_block
== NULL
)
2111 *((int *)(ol
->value
)) = value
;
2113 *((int *)((uschar
*)data_block
+ (long int)(ol
->value
))) = value
;
2116 /* There's a special routine to read time values. */
2119 value
= readconf_readtime(s
, 0, FALSE
);
2121 log_write(0, LOG_PANIC_DIE
|LOG_CONFIG_IN
, "invalid time value for %s",
2123 if (data_block
== NULL
)
2124 *((int *)(ol
->value
)) = value
;
2126 *((int *)((uschar
*)data_block
+ (long int)(ol
->value
))) = value
;
2129 /* A time list is a list of colon-separated times, with the first
2130 element holding the size of the list and the second the number of
2136 int *list
= (data_block
== NULL
)?
2137 (int *)(ol
->value
) :
2138 (int *)((uschar
*)data_block
+ (long int)(ol
->value
));
2140 if (*s
!= 0) for (count
= 1; count
<= list
[0] - 2; count
++)
2143 uschar
*snext
= Ustrchr(s
, ':');
2147 while (ss
> s
&& isspace(ss
[-1])) ss
--;
2150 value
= readconf_readtime(s
, terminator
, FALSE
);
2152 log_write(0, LOG_PANIC_DIE
|LOG_CONFIG_IN
, "invalid time value for %s",
2154 if (count
> 1 && value
<= list
[count
])
2155 log_write(0, LOG_PANIC_DIE
|LOG_CONFIG_IN
,
2156 "time value out of order for %s", name
);
2157 list
[count
+1] = value
;
2158 if (snext
== NULL
) break;
2160 while (isspace(*s
)) s
++;
2163 if (count
> list
[0] - 2)
2164 log_write(0, LOG_PANIC_DIE
|LOG_CONFIG_IN
, "too many time values for %s",
2166 if (count
> 0 && list
[2] == 0) count
= 0;
2173 void (*fn
)() = ol
->value
;
2184 /*************************************************
2185 * Print a time value *
2186 *************************************************/
2189 Argument: a time value in seconds
2190 Returns: pointer to a fixed buffer containing the time as a string,
2191 in readconf_readtime() format
2195 readconf_printtime(int t
)
2198 uschar
*p
= time_buffer
;
2215 if (w
> 0) { sprintf(CS p
, "%dw", w
); while (*p
) p
++; }
2216 if (d
> 0) { sprintf(CS p
, "%dd", d
); while (*p
) p
++; }
2217 if (h
> 0) { sprintf(CS p
, "%dh", h
); while (*p
) p
++; }
2218 if (m
> 0) { sprintf(CS p
, "%dm", m
); while (*p
) p
++; }
2219 if (s
> 0 || p
== time_buffer
) sprintf(CS p
, "%ds", s
);
2226 /*************************************************
2227 * Print an individual option value *
2228 *************************************************/
2230 /* This is used by the -bP option, so prints to the standard output.
2231 The entire options list is passed in as an argument, because some options come
2232 in pairs - typically uid/gid settings, which can either be explicit numerical
2233 values, or strings to be expanded later. If the numerical value is unset,
2234 search for "*expand_<name>" to see if there is a string equivalent.
2237 ol option entry, or NULL for an unknown option
2239 options_block NULL for main configuration options; otherwise points to
2240 a driver block; if the option doesn't have opt_public
2241 set, then options_block->options_block is where the item
2243 oltop points to the option list in which ol exists
2244 last one more than the offset of the last entry in optop
2245 no_labels do not show "foo = " at the start.
2251 print_ol(optionlist
*ol
, uschar
*name
, void *options_block
,
2252 optionlist
*oltop
, int last
, BOOL no_labels
)
2265 printf("%s is not a known option\n", name
);
2269 /* Non-admin callers cannot see options that have been flagged secure by the
2272 if (!admin_user
&& (ol
->type
& opt_secure
) != 0)
2275 printf("%s\n", hidden
);
2277 printf("%s = %s\n", name
, hidden
);
2281 /* Else show the value of the option */
2284 if (options_block
!= NULL
)
2286 if ((ol
->type
& opt_public
) == 0)
2287 options_block
= (void *)(((driver_instance
*)options_block
)->options_block
);
2288 value
= (void *)((uschar
*)options_block
+ (long int)value
);
2291 switch(ol
->type
& opt_mask
)
2294 case opt_rewrite
: /* Show the text value */
2295 s
= *((uschar
**)value
);
2296 if (!no_labels
) printf("%s = ", name
);
2297 printf("%s\n", (s
== NULL
)? US
"" : string_printing2(s
, FALSE
));
2301 if (!no_labels
) printf("%s = ", name
);
2302 printf("%d\n", *((int *)value
));
2307 int x
= *((int *)value
);
2308 if (x
!= 0 && (x
& 1023) == 0)
2312 if ((x
& 1023) == 0)
2317 if (!no_labels
) printf("%s = ", name
);
2318 printf("%d%c\n", x
, c
);
2322 if (!no_labels
) printf("%s = ", name
);
2330 int x
= *((int *)value
);
2331 if (!no_labels
) printf("%s = ", name
);
2332 if (x
== 0) printf("0\n");
2333 else if ((x
& 1023) == 0) printf("%dM\n", x
>> 10);
2334 else printf("%dK\n", x
);
2339 if (!no_labels
) printf("%s = ", name
);
2340 printf("%#o\n", *((int *)value
));
2343 /* Can be negative only when "unset", in which case integer */
2347 int x
= *((int *)value
);
2350 if (x
< 0) printf("%s =\n", name
); else
2352 if (!no_labels
) printf("%s = ", name
);
2353 printf("%d.", x
/1000);
2366 /* If the numerical value is unset, try for the string value */
2368 case opt_expand_uid
:
2369 if (! *get_set_flag(name
, oltop
, last
, options_block
))
2371 sprintf(CS name2
, "*expand_%.50s", name
);
2372 ol2
= find_option(name2
, oltop
, last
);
2375 void *value2
= ol2
->value
;
2376 if (options_block
!= NULL
)
2377 value2
= (void *)((uschar
*)options_block
+ (long int)value2
);
2378 s
= *((uschar
**)value2
);
2379 if (!no_labels
) printf("%s = ", name
);
2380 printf("%s\n", (s
== NULL
)? US
"" : string_printing(s
));
2385 /* Else fall through */
2388 if (!no_labels
) printf("%s = ", name
);
2389 if (! *get_set_flag(name
, oltop
, last
, options_block
))
2393 pw
= getpwuid(*((uid_t
*)value
));
2395 printf("%ld\n", (long int)(*((uid_t
*)value
)));
2396 else printf("%s\n", pw
->pw_name
);
2400 /* If the numerical value is unset, try for the string value */
2402 case opt_expand_gid
:
2403 if (! *get_set_flag(name
, oltop
, last
, options_block
))
2405 sprintf(CS name2
, "*expand_%.50s", name
);
2406 ol2
= find_option(name2
, oltop
, last
);
2407 if (ol2
!= NULL
&& (ol2
->type
& opt_mask
) == opt_stringptr
)
2409 void *value2
= ol2
->value
;
2410 if (options_block
!= NULL
)
2411 value2
= (void *)((uschar
*)options_block
+ (long int)value2
);
2412 s
= *((uschar
**)value2
);
2413 if (!no_labels
) printf("%s = ", name
);
2414 printf("%s\n", (s
== NULL
)? US
"" : string_printing(s
));
2419 /* Else fall through */
2422 if (!no_labels
) printf("%s = ", name
);
2423 if (! *get_set_flag(name
, oltop
, last
, options_block
))
2427 gr
= getgrgid(*((int *)value
));
2429 printf("%ld\n", (long int)(*((int *)value
)));
2430 else printf("%s\n", gr
->gr_name
);
2435 uidlist
= *((uid_t
**)value
);
2436 if (!no_labels
) printf("%s =", name
);
2437 if (uidlist
!= NULL
)
2441 if (no_labels
) sep
= '\0';
2442 for (i
= 1; i
<= (int)(uidlist
[0]); i
++)
2444 uschar
*name
= NULL
;
2445 pw
= getpwuid(uidlist
[i
]);
2446 if (pw
!= NULL
) name
= US pw
->pw_name
;
2447 if (sep
!= '\0') printf("%c", sep
);
2448 if (name
!= NULL
) printf("%s", name
);
2449 else printf("%ld", (long int)(uidlist
[i
]));
2457 gidlist
= *((gid_t
**)value
);
2458 if (!no_labels
) printf("%s =", name
);
2459 if (gidlist
!= NULL
)
2463 if (no_labels
) sep
= '\0';
2464 for (i
= 1; i
<= (int)(gidlist
[0]); i
++)
2466 uschar
*name
= NULL
;
2467 gr
= getgrgid(gidlist
[i
]);
2468 if (gr
!= NULL
) name
= US gr
->gr_name
;
2469 if (sep
!= '\0') printf("%c", sep
);
2470 if (name
!= NULL
) printf("%s", name
);
2471 else printf("%ld", (long int)(gidlist
[i
]));
2479 if (!no_labels
) printf("%s = ", name
);
2480 printf("%s\n", readconf_printtime(*((int *)value
)));
2486 int *list
= (int *)value
;
2487 if (!no_labels
) printf("%s = ", name
);
2488 for (i
= 0; i
< list
[1]; i
++)
2489 printf("%s%s", (i
== 0)? "" : ":", readconf_printtime(list
[i
+2]));
2495 printf("%s%s\n", ((*((int *)value
)) & (1 << ((ol
->type
>> 16) & 31)))?
2499 case opt_expand_bool
:
2500 sprintf(CS name2
, "*expand_%.50s", name
);
2501 ol2
= find_option(name2
, oltop
, last
);
2502 if (ol2
!= NULL
&& ol2
->value
!= NULL
)
2504 void *value2
= ol2
->value
;
2505 if (options_block
!= NULL
)
2506 value2
= (void *)((uschar
*)options_block
+ (long int)value2
);
2507 s
= *((uschar
**)value2
);
2510 if (!no_labels
) printf("%s = ", name
);
2511 printf("%s\n", string_printing(s
));
2514 /* s == NULL => string not set; fall through */
2520 case opt_bool_verify
:
2522 printf("%s%s\n", (*((BOOL
*)value
))? "" : "no_", name
);
2529 /*************************************************
2530 * Print value from main configuration *
2531 *************************************************/
2533 /* This function, called as a result of encountering the -bP option,
2534 causes the value of any main configuration variable to be output if the
2535 second argument is NULL. There are some special values:
2537 all print all main configuration options
2538 config_file print the name of the configuration file
2539 (configure_file will still work, for backward
2541 routers print the routers' configurations
2542 transports print the transports' configuration
2543 authenticators print the authenticators' configuration
2544 macros print the macros' configuration
2545 router_list print a list of router names
2546 transport_list print a list of transport names
2547 authenticator_list print a list of authentication mechanism names
2548 macro_list print a list of macro names
2549 +name print a named list item
2550 local_scan print the local_scan options
2551 config print the configuration as it is parsed
2553 If the second argument is not NULL, it must be one of "router", "transport",
2554 "authenticator" or "macro" in which case the first argument identifies the
2555 driver whose options are to be printed.
2558 name option name if type == NULL; else driver name
2559 type NULL or driver type name, as described above
2560 no_labels avoid the "foo = " at the start of an item
2566 readconf_print(uschar
*name
, uschar
*type
, BOOL no_labels
)
2568 BOOL names_only
= FALSE
;
2570 optionlist
*ol2
= NULL
;
2571 driver_instance
*d
= NULL
;
2582 static uschar
*types
[] = { US
"address", US
"domain", US
"host",
2584 static tree_node
**anchors
[] = { &addresslist_anchor
, &domainlist_anchor
,
2585 &hostlist_anchor
, &localpartlist_anchor
};
2587 for (i
= 0; i
< 4; i
++)
2589 t
= tree_search(*(anchors
[i
]), name
+1);
2594 printf("%s\n", ((namedlist_block
*)(t
->data
.ptr
))->string
);
2596 printf("%slist %s = %s\n", types
[i
], name
+1,
2597 ((namedlist_block
*)(t
->data
.ptr
))->string
);
2602 printf("no address, domain, host, or local part list called \"%s\" "
2603 "exists\n", name
+1);
2608 if ( Ustrcmp(name
, "configure_file") == 0
2609 ||Ustrcmp(name
, "config_file") == 0)
2611 printf("%s\n", CS config_main_filename
);
2615 if (Ustrcmp(name
, "all") == 0)
2617 for (ol
= optionlist_config
;
2618 ol
< optionlist_config
+ optionlist_config_size
; ol
++)
2620 if ((ol
->type
& opt_hidden
) == 0)
2621 print_ol(ol
, US ol
->name
, NULL
,
2622 optionlist_config
, optionlist_config_size
,
2628 if (Ustrcmp(name
, "local_scan") == 0)
2630 #ifndef LOCAL_SCAN_HAS_OPTIONS
2631 printf("local_scan() options are not supported\n");
2633 for (ol
= local_scan_options
;
2634 ol
< local_scan_options
+ local_scan_options_count
; ol
++)
2636 print_ol(ol
, US ol
->name
, NULL
, local_scan_options
,
2637 local_scan_options_count
, no_labels
);
2643 if (Ustrcmp(name
, "config") == 0)
2645 print_config(admin_user
);
2649 if (Ustrcmp(name
, "routers") == 0)
2654 else if (Ustrcmp(name
, "transports") == 0)
2656 type
= US
"transport";
2660 else if (Ustrcmp(name
, "authenticators") == 0)
2662 type
= US
"authenticator";
2666 else if (Ustrcmp(name
, "macros") == 0)
2672 else if (Ustrcmp(name
, "router_list") == 0)
2679 else if (Ustrcmp(name
, "transport_list") == 0)
2681 type
= US
"transport";
2686 else if (Ustrcmp(name
, "authenticator_list") == 0)
2688 type
= US
"authenticator";
2693 else if (Ustrcmp(name
, "macro_list") == 0)
2702 print_ol(find_option(name
, optionlist_config
, optionlist_config_size
),
2703 name
, NULL
, optionlist_config
, optionlist_config_size
, no_labels
);
2708 /* Handle the options for a router or transport. Skip options that are flagged
2709 as hidden. Some of these are options with names starting with '*', used for
2710 internal alternative representations of other options (which the printing
2711 function will sort out). Others are synonyms kept for backward compatibility.
2714 if (Ustrcmp(type
, "router") == 0)
2716 d
= (driver_instance
*)routers
;
2717 ol2
= optionlist_routers
;
2718 size
= optionlist_routers_size
;
2720 else if (Ustrcmp(type
, "transport") == 0)
2722 d
= (driver_instance
*)transports
;
2723 ol2
= optionlist_transports
;
2724 size
= optionlist_transports_size
;
2726 else if (Ustrcmp(type
, "authenticator") == 0)
2728 d
= (driver_instance
*)auths
;
2729 ol2
= optionlist_auths
;
2730 size
= optionlist_auths_size
;
2733 else if (Ustrcmp(type
, "macro") == 0)
2735 /* People store passwords in macros and they were previously not available
2736 for printing. So we have an admin_users restriction. */
2739 fprintf(stderr
, "exim: permission denied\n");
2742 for (m
= macros
; m
!= NULL
; m
= m
->next
)
2744 if (name
== NULL
|| Ustrcmp(name
, m
->name
) == 0)
2747 printf("%s\n", CS m
->name
);
2749 printf("%s=%s\n", CS m
->name
, CS m
->replacement
);
2755 printf("%s %s not found\n", type
, name
);
2761 for (; d
!= NULL
; d
= d
->next
) printf("%s\n", CS d
->name
);
2765 /* Either search for a given driver, or print all of them */
2767 for (; d
!= NULL
; d
= d
->next
)
2770 printf("\n%s %s:\n", d
->name
, type
);
2771 else if (Ustrcmp(d
->name
, name
) != 0) continue;
2773 for (ol
= ol2
; ol
< ol2
+ size
; ol
++)
2775 if ((ol
->type
& opt_hidden
) == 0)
2776 print_ol(ol
, US ol
->name
, d
, ol2
, size
, no_labels
);
2779 for (ol
= d
->info
->options
;
2780 ol
< d
->info
->options
+ *(d
->info
->options_count
); ol
++)
2782 if ((ol
->type
& opt_hidden
) == 0)
2783 print_ol(ol
, US ol
->name
, d
, d
->info
->options
, *(d
->info
->options_count
), no_labels
);
2785 if (name
!= NULL
) return;
2787 if (name
!= NULL
) printf("%s %s not found\n", type
, name
);
2792 /*************************************************
2793 * Read a named list item *
2794 *************************************************/
2796 /* This function reads a name and a list (i.e. string). The name is used to
2797 save the list in a tree, sorted by its name. Each entry also has a number,
2798 which can be used for caching tests, but if the string contains any expansion
2799 items other than $key, the number is set negative to inhibit caching. This
2800 mechanism is used for domain, host, and address lists that are referenced by
2804 anchorp points to the tree anchor
2805 numberp points to the current number for this tree
2806 max the maximum number permitted
2807 s the text of the option line, starting immediately after the name
2809 tname the name of the list type, for messages
2815 read_named_list(tree_node
**anchorp
, int *numberp
, int max
, uschar
*s
,
2818 BOOL forcecache
= FALSE
;
2821 namedlist_block
*nb
= store_get(sizeof(namedlist_block
));
2823 if (Ustrncmp(s
, "_cache", 6) == 0)
2830 log_write(0, LOG_PANIC_DIE
|LOG_CONFIG_IN
, "unrecognized configuration line");
2832 if (*numberp
>= max
)
2833 log_write(0, LOG_PANIC_DIE
|LOG_CONFIG_IN
, "too many named %ss (max is %d)\n",
2836 while (isspace(*s
)) s
++;
2838 while (isalnum(*s
) || *s
== '_') s
++;
2839 t
= store_get(sizeof(tree_node
) + s
-ss
);
2840 Ustrncpy(t
->name
, ss
, s
-ss
);
2842 while (isspace(*s
)) s
++;
2844 if (!tree_insertnode(anchorp
, t
))
2845 log_write(0, LOG_PANIC_DIE
|LOG_CONFIG_IN
,
2846 "duplicate name \"%s\" for a named %s", t
->name
, tname
);
2849 nb
->number
= *numberp
;
2852 if (*s
++ != '=') log_write(0, LOG_PANIC_DIE
|LOG_CONFIG_IN
,
2853 "missing '=' after \"%s\"", t
->name
);
2854 while (isspace(*s
)) s
++;
2855 nb
->string
= read_string(s
, t
->name
);
2856 nb
->cache_data
= NULL
;
2858 /* Check the string for any expansions; if any are found, mark this list
2859 uncacheable unless the user has explicited forced caching. */
2861 if (!forcecache
&& Ustrchr(nb
->string
, '$') != NULL
) nb
->number
= -1;
2867 /*************************************************
2868 * Unpick data for a rate limit *
2869 *************************************************/
2871 /* This function is called to unpick smtp_ratelimit_{mail,rcpt} into four
2875 s string, in the form t,b,f,l
2876 where t is the threshold (integer)
2877 b is the initial delay (time)
2878 f is the multiplicative factor (fixed point)
2879 k is the maximum time (time)
2880 threshold where to store threshold
2881 base where to store base in milliseconds
2882 factor where to store factor in milliseconds
2883 limit where to store limit
2885 Returns: nothing (panics on error)
2889 unpick_ratelimit(uschar
*s
, int *threshold
, int *base
, double *factor
,
2892 uschar bstring
[16], lstring
[16];
2894 if (sscanf(CS s
, "%d, %15[0123456789smhdw.], %lf, %15s", threshold
, bstring
,
2895 factor
, lstring
) == 4)
2897 *base
= readconf_readtime(bstring
, 0, TRUE
);
2898 *limit
= readconf_readtime(lstring
, 0, TRUE
);
2899 if (*base
>= 0 && *limit
>= 0) return;
2901 log_write(0, LOG_MAIN
|LOG_PANIC_DIE
, "malformed ratelimit data: %s", s
);
2907 /*************************************************
2908 * Drop privs for checking TLS config *
2909 *************************************************/
2911 /* We want to validate TLS options during readconf, but do not want to be
2912 root when we call into the TLS library, in case of library linkage errors
2913 which cause segfaults; before this check, those were always done as the Exim
2914 runtime user and it makes sense to continue with that.
2916 Assumes: tls_require_ciphers has been set, if it will be
2917 exim_user has been set, if it will be
2918 exim_group has been set, if it will be
2920 Returns: bool for "okay"; false will cause caller to immediately exit.
2925 tls_dropprivs_validate_require_cipher(void)
2927 const uschar
*errmsg
;
2930 void (*oldsignal
)(int);
2932 /* If TLS will never be used, no point checking ciphers */
2934 if ( !tls_advertise_hosts
2935 || !*tls_advertise_hosts
2936 || Ustrcmp(tls_advertise_hosts
, ":") == 0
2939 else if (!tls_certificate
)
2940 log_write(0, LOG_MAIN
|LOG_PANIC
,
2941 "Warning: No server certificate defined; TLS connections will fail.\n"
2942 " Suggested action: either install a certificate or change tls_advertise_hosts option");
2944 oldsignal
= signal(SIGCHLD
, SIG_DFL
);
2947 if ((pid
= fork()) < 0)
2948 log_write(0, LOG_MAIN
|LOG_PANIC_DIE
, "fork failed for TLS check");
2952 /* in some modes, will have dropped privilege already */
2954 exim_setugid(exim_uid
, exim_gid
, FALSE
,
2955 US
"calling tls_validate_require_cipher");
2957 errmsg
= tls_validate_require_cipher();
2960 log_write(0, LOG_PANIC_DIE
|LOG_CONFIG
,
2961 "tls_require_ciphers invalid: %s", errmsg
);
2968 rc
= waitpid(pid
, &status
, 0);
2969 } while (rc
< 0 && errno
== EINTR
);
2972 debug_printf("tls_validate_require_cipher child %d ended: status=0x%x\n",
2975 signal(SIGCHLD
, oldsignal
);
2979 #endif /* SUPPORT_TLS */
2984 /*************************************************
2985 * Read main configuration options *
2986 *************************************************/
2988 /* This function is the first to be called for configuration reading. It
2989 opens the configuration file and reads general configuration settings until
2990 it reaches the end of the configuration section. The file is then left open so
2991 that the remaining configuration data can subsequently be read if needed for
2994 The configuration file must be owned either by root or exim, and be writeable
2995 only by root or uid/gid exim. The values for Exim's uid and gid can be changed
2996 in the config file, so the test is done on the compiled in values. A slight
2997 anomaly, to be carefully documented.
2999 The name of the configuration file is taken from a list that is included in the
3000 binary of Exim. It can be altered from the command line, but if that is done,
3001 root privilege is immediately withdrawn unless the caller is root or exim.
3002 The first file on the list that exists is used.
3004 For use on multiple systems that share file systems, first look for a
3005 configuration file whose name has the current node name on the end. If that is
3006 not found, try the generic name. For really contorted configurations, that run
3007 multiple Exims with different uid settings, first try adding the effective uid
3008 before the node name. These complications are going to waste resources on most
3009 systems. Therefore they are available only when requested by compile-time
3016 struct stat statbuf
;
3017 uschar
*s
, *filename
;
3018 const uschar
*list
= config_main_filelist
;
3020 /* Loop through the possible file names */
3022 while((filename
= string_nextinlist(&list
, &sep
, big_buffer
, big_buffer_size
))
3025 /* Cut out all the fancy processing unless specifically wanted */
3027 #if defined(CONFIGURE_FILE_USE_NODE) || defined(CONFIGURE_FILE_USE_EUID)
3028 uschar
*suffix
= filename
+ Ustrlen(filename
);
3030 /* Try for the node-specific file if a node name exists */
3032 #ifdef CONFIGURE_FILE_USE_NODE
3034 if (uname(&uts
) >= 0)
3036 #ifdef CONFIGURE_FILE_USE_EUID
3037 sprintf(CS suffix
, ".%ld.%.256s", (long int)original_euid
, uts
.nodename
);
3038 config_file
= Ufopen(filename
, "rb");
3039 if (config_file
== NULL
)
3040 #endif /* CONFIGURE_FILE_USE_EUID */
3042 sprintf(CS suffix
, ".%.256s", uts
.nodename
);
3043 config_file
= Ufopen(filename
, "rb");
3046 #endif /* CONFIGURE_FILE_USE_NODE */
3048 /* Otherwise, try the generic name, possibly with the euid added */
3050 #ifdef CONFIGURE_FILE_USE_EUID
3051 if (config_file
== NULL
)
3053 sprintf(CS suffix
, ".%ld", (long int)original_euid
);
3054 config_file
= Ufopen(filename
, "rb");
3056 #endif /* CONFIGURE_FILE_USE_EUID */
3058 /* Finally, try the unadorned name */
3060 if (config_file
== NULL
)
3063 config_file
= Ufopen(filename
, "rb");
3065 #else /* if neither defined */
3067 /* This is the common case when the fancy processing is not included. */
3069 config_file
= Ufopen(filename
, "rb");
3072 /* If the file does not exist, continue to try any others. For any other
3073 error, break out (and die). */
3075 if (config_file
!= NULL
|| errno
!= ENOENT
) break;
3078 /* On success, save the name for verification; config_filename is used when
3079 logging configuration errors (it changes for .included files) whereas
3080 config_main_filename is the name shown by -bP. Failure to open a configuration
3081 file is a serious disaster. */
3083 if (config_file
!= NULL
)
3086 config_filename
= config_main_filename
= string_copy(filename
);
3088 p
= Ustrrchr(filename
, '/');
3089 config_main_directory
= p
? string_copyn(filename
, p
- filename
)
3090 : string_copy(US
".");
3094 if (filename
== NULL
)
3095 log_write(0, LOG_MAIN
|LOG_PANIC_DIE
, "non-existent configuration file(s): "
3096 "%s", config_main_filelist
);
3098 log_write(0, LOG_MAIN
|LOG_PANIC_DIE
, "%s", string_open_failed(errno
,
3099 "configuration file %s", filename
));
3102 /* Check the status of the file we have opened, if we have retained root
3103 privileges and the file isn't /dev/null (which *should* be 0666). */
3105 if (trusted_config
&& Ustrcmp(filename
, US
"/dev/null"))
3107 if (fstat(fileno(config_file
), &statbuf
) != 0)
3108 log_write(0, LOG_MAIN
|LOG_PANIC_DIE
, "failed to stat configuration file %s",
3111 if ((statbuf
.st_uid
!= root_uid
/* owner not root */
3112 #ifdef CONFIGURE_OWNER
3113 && statbuf
.st_uid
!= config_uid
/* owner not the special one */
3116 (statbuf
.st_gid
!= root_gid
/* group not root & */
3117 #ifdef CONFIGURE_GROUP
3118 && statbuf
.st_gid
!= config_gid
/* group not the special one */
3120 && (statbuf
.st_mode
& 020) != 0) || /* group writeable */
3122 ((statbuf
.st_mode
& 2) != 0)) /* world writeable */
3124 log_write(0, LOG_MAIN
|LOG_PANIC_DIE
, "Exim configuration file %s has the "
3125 "wrong owner, group, or mode", big_buffer
);
3128 /* Process the main configuration settings. They all begin with a lower case
3129 letter. If we see something starting with an upper case letter, it is taken as
3130 a macro definition. */
3132 while ((s
= get_config_line()) != NULL
)
3134 if (isupper(s
[0])) read_macro_assignment(s
);
3136 else if (Ustrncmp(s
, "domainlist", 10) == 0)
3137 read_named_list(&domainlist_anchor
, &domainlist_count
,
3138 MAX_NAMED_LIST
, s
+10, US
"domain list");
3140 else if (Ustrncmp(s
, "hostlist", 8) == 0)
3141 read_named_list(&hostlist_anchor
, &hostlist_count
,
3142 MAX_NAMED_LIST
, s
+8, US
"host list");
3144 else if (Ustrncmp(s
, US
"addresslist", 11) == 0)
3145 read_named_list(&addresslist_anchor
, &addresslist_count
,
3146 MAX_NAMED_LIST
, s
+11, US
"address list");
3148 else if (Ustrncmp(s
, US
"localpartlist", 13) == 0)
3149 read_named_list(&localpartlist_anchor
, &localpartlist_count
,
3150 MAX_NAMED_LIST
, s
+13, US
"local part list");
3153 (void) readconf_handle_option(s
, optionlist_config
, optionlist_config_size
,
3154 NULL
, US
"main option \"%s\" unknown");
3158 /* If local_sender_retain is set, local_from_check must be unset. */
3160 if (local_sender_retain
&& local_from_check
)
3161 log_write(0, LOG_MAIN
|LOG_PANIC_DIE
, "both local_from_check and "
3162 "local_sender_retain are set; this combination is not allowed");
3164 /* If the timezone string is empty, set it to NULL, implying no TZ variable
3167 if (timezone_string
!= NULL
&& *timezone_string
== 0) timezone_string
= NULL
;
3169 /* The max retry interval must not be greater than 24 hours. */
3171 if (retry_interval_max
> 24*60*60) retry_interval_max
= 24*60*60;
3173 /* remote_max_parallel must be > 0 */
3175 if (remote_max_parallel
<= 0) remote_max_parallel
= 1;
3177 /* Save the configured setting of freeze_tell, so we can re-instate it at the
3178 start of a new SMTP message. */
3180 freeze_tell_config
= freeze_tell
;
3182 /* The primary host name may be required for expansion of spool_directory
3183 and log_file_path, so make sure it is set asap. It is obtained from uname(),
3184 but if that yields an unqualified value, make a FQDN by using gethostbyname to
3185 canonize it. Some people like upper case letters in their host names, so we
3186 don't force the case. */
3188 if (primary_hostname
== NULL
)
3190 const uschar
*hostname
;
3192 if (uname(&uts
) < 0)
3193 log_write(0, LOG_MAIN
|LOG_PANIC_DIE
, "uname() failed to yield host name");
3194 hostname
= US uts
.nodename
;
3196 if (Ustrchr(hostname
, '.') == NULL
)
3199 struct hostent
*hostdata
;
3202 if (!disable_ipv6
&& (dns_ipv4_lookup
== NULL
||
3203 match_isinlist(hostname
, CUSS
&dns_ipv4_lookup
, 0, NULL
, NULL
,
3204 MCL_DOMAIN
, TRUE
, NULL
) != OK
))
3213 #if HAVE_GETIPNODEBYNAME
3215 hostdata
= getipnodebyname(CS hostname
, af
, 0, &error_num
);
3217 hostdata
= gethostbyname2(CS hostname
, af
);
3220 hostdata
= gethostbyname(CS hostname
);
3223 if (hostdata
!= NULL
)
3225 hostname
= US hostdata
->h_name
;
3229 if (af
== AF_INET
) break;
3234 primary_hostname
= string_copy(hostname
);
3237 /* Set up default value for smtp_active_hostname */
3239 smtp_active_hostname
= primary_hostname
;
3241 /* If spool_directory wasn't set in the build-time configuration, it must have
3242 got set above. Of course, writing to the log may not work if log_file_path is
3243 not set, but it will at least get to syslog or somewhere, with any luck. */
3245 if (*spool_directory
== 0)
3246 log_write(0, LOG_MAIN
|LOG_PANIC_DIE
, "spool_directory undefined: cannot "
3249 /* Expand the spool directory name; it may, for example, contain the primary
3250 host name. Same comment about failure. */
3252 s
= expand_string(spool_directory
);
3254 log_write(0, LOG_MAIN
|LOG_PANIC_DIE
, "failed to expand spool_directory "
3255 "\"%s\": %s", spool_directory
, expand_string_message
);
3256 spool_directory
= s
;
3258 /* Expand log_file_path, which must contain "%s" in any component that isn't
3259 the null string or "syslog". It is also allowed to contain one instance of %D
3260 or %M. However, it must NOT contain % followed by anything else. */
3262 if (*log_file_path
!= 0)
3264 const uschar
*ss
, *sss
;
3265 int sep
= ':'; /* Fixed for log file path */
3266 s
= expand_string(log_file_path
);
3268 log_write(0, LOG_MAIN
|LOG_PANIC_DIE
, "failed to expand log_file_path "
3269 "\"%s\": %s", log_file_path
, expand_string_message
);
3272 while ((sss
= string_nextinlist(&ss
,&sep
,big_buffer
,big_buffer_size
)) != NULL
)
3275 if (sss
[0] == 0 || Ustrcmp(sss
, "syslog") == 0) continue;
3276 t
= Ustrstr(sss
, "%s");
3278 log_write(0, LOG_MAIN
|LOG_PANIC_DIE
, "log_file_path \"%s\" does not "
3279 "contain \"%%s\"", sss
);
3281 t
= Ustrchr(sss
, '%');
3284 if ((t
[1] != 'D' && t
[1] != 'M') || Ustrchr(t
+2, '%') != NULL
)
3285 log_write(0, LOG_MAIN
|LOG_PANIC_DIE
, "log_file_path \"%s\" contains "
3286 "unexpected \"%%\" character", s
);
3293 /* Interpret syslog_facility into an integer argument for 'ident' param to
3294 openlog(). Default is LOG_MAIL set in globals.c. Allow the user to omit the
3297 if (syslog_facility_str
!= NULL
)
3300 uschar
*s
= syslog_facility_str
;
3302 if ((Ustrlen(syslog_facility_str
) >= 4) &&
3303 (strncmpic(syslog_facility_str
, US
"log_", 4) == 0))
3306 for (i
= 0; i
< syslog_list_size
; i
++)
3308 if (strcmpic(s
, syslog_list
[i
].name
) == 0)
3310 syslog_facility
= syslog_list
[i
].value
;
3315 if (i
>= syslog_list_size
)
3317 log_write(0, LOG_PANIC_DIE
|LOG_CONFIG
,
3318 "failed to interpret syslog_facility \"%s\"", syslog_facility_str
);
3322 /* Expand pid_file_path */
3324 if (*pid_file_path
!= 0)
3326 s
= expand_string(pid_file_path
);
3328 log_write(0, LOG_MAIN
|LOG_PANIC_DIE
, "failed to expand pid_file_path "
3329 "\"%s\": %s", pid_file_path
, expand_string_message
);
3333 /* Set default value of process_log_path */
3335 if (process_log_path
== NULL
|| *process_log_path
=='\0')
3336 process_log_path
= string_sprintf("%s/exim-process.info", spool_directory
);
3338 /* Compile the regex for matching a UUCP-style "From_" line in an incoming
3341 regex_From
= regex_must_compile(uucp_from_pattern
, FALSE
, TRUE
);
3343 /* Unpick the SMTP rate limiting options, if set */
3345 if (smtp_ratelimit_mail
!= NULL
)
3347 unpick_ratelimit(smtp_ratelimit_mail
, &smtp_rlm_threshold
,
3348 &smtp_rlm_base
, &smtp_rlm_factor
, &smtp_rlm_limit
);
3351 if (smtp_ratelimit_rcpt
!= NULL
)
3353 unpick_ratelimit(smtp_ratelimit_rcpt
, &smtp_rlr_threshold
,
3354 &smtp_rlr_base
, &smtp_rlr_factor
, &smtp_rlr_limit
);
3357 /* The qualify domains default to the primary host name */
3359 if (qualify_domain_sender
== NULL
)
3360 qualify_domain_sender
= primary_hostname
;
3361 if (qualify_domain_recipient
== NULL
)
3362 qualify_domain_recipient
= qualify_domain_sender
;
3364 /* Setting system_filter_user in the configuration sets the gid as well if a
3365 name is given, but a numerical value does not. */
3367 if (system_filter_uid_set
&& !system_filter_gid_set
)
3369 struct passwd
*pw
= getpwuid(system_filter_uid
);
3371 log_write(0, LOG_MAIN
|LOG_PANIC_DIE
, "Failed to look up uid %ld",
3372 (long int)system_filter_uid
);
3373 system_filter_gid
= pw
->pw_gid
;
3374 system_filter_gid_set
= TRUE
;
3377 /* If the errors_reply_to field is set, check that it is syntactically valid
3378 and ensure it contains a domain. */
3380 if (errors_reply_to
!= NULL
)
3383 int start
, end
, domain
;
3384 uschar
*recipient
= parse_extract_address(errors_reply_to
, &errmess
,
3385 &start
, &end
, &domain
, FALSE
);
3387 if (recipient
== NULL
)
3388 log_write(0, LOG_PANIC_DIE
|LOG_CONFIG
,
3389 "error in errors_reply_to (%s): %s", errors_reply_to
, errmess
);
3392 log_write(0, LOG_PANIC_DIE
|LOG_CONFIG
,
3393 "errors_reply_to (%s) does not contain a domain", errors_reply_to
);
3396 /* If smtp_accept_queue or smtp_accept_max_per_host is set, then
3397 smtp_accept_max must also be set. */
3399 if (smtp_accept_max
== 0 &&
3400 (smtp_accept_queue
> 0 || smtp_accept_max_per_host
!= NULL
))
3401 log_write(0, LOG_PANIC_DIE
|LOG_CONFIG
,
3402 "smtp_accept_max must be set if smtp_accept_queue or "
3403 "smtp_accept_max_per_host is set");
3405 /* Set up the host number if anything is specified. It is an expanded string
3406 so that it can be computed from the host name, for example. We do this last
3407 so as to ensure that everything else is set up before the expansion. */
3409 if (host_number_string
!= NULL
)
3413 uschar
*s
= expand_string(host_number_string
);
3415 log_write(0, LOG_MAIN
|LOG_PANIC_DIE
,
3416 "failed to expand localhost_number \"%s\": %s",
3417 host_number_string
, expand_string_message
);
3418 n
= Ustrtol(s
, &end
, 0);
3419 while (isspace(*end
)) end
++;
3421 log_write(0, LOG_PANIC_DIE
|LOG_CONFIG
,
3422 "localhost_number value is not a number: %s", s
);
3423 if (n
> LOCALHOST_MAX
)
3424 log_write(0, LOG_PANIC_DIE
|LOG_CONFIG
,
3425 "localhost_number is greater than the maximum allowed value (%d)",
3431 /* If tls_verify_hosts is set, tls_verify_certificates must also be set */
3433 if ((tls_verify_hosts
!= NULL
|| tls_try_verify_hosts
!= NULL
) &&
3434 tls_verify_certificates
== NULL
)
3435 log_write(0, LOG_PANIC_DIE
|LOG_CONFIG
,
3436 "tls_%sverify_hosts is set, but tls_verify_certificates is not set",
3437 (tls_verify_hosts
!= NULL
)? "" : "try_");
3439 /* This also checks that the library linkage is working and we can call
3440 routines in it, so call even if tls_require_ciphers is unset */
3441 if (!tls_dropprivs_validate_require_cipher())
3444 /* Magic number: at time of writing, 1024 has been the long-standing value
3445 used by so many clients, and what Exim used to use always, that it makes
3446 sense to just min-clamp this max-clamp at that. */
3447 if (tls_dh_max_bits
< 1024)
3448 log_write(0, LOG_PANIC_DIE
|LOG_CONFIG
,
3449 "tls_dh_max_bits is too small, must be at least 1024 for interop");
3451 /* If openssl_options is set, validate it */
3452 if (openssl_options
!= NULL
)
3455 log_write(0, LOG_PANIC_DIE
|LOG_CONFIG
,
3456 "openssl_options is set but we're using GnuTLS");
3459 if (!(tls_openssl_options_parse(openssl_options
, &dummy
)))
3460 log_write(0, LOG_PANIC_DIE
|LOG_CONFIG
,
3461 "openssl_options parse error: %s", openssl_options
);
3465 if (gnutls_require_kx
|| gnutls_require_mac
|| gnutls_require_proto
)
3466 log_write(0, LOG_MAIN
, "WARNING: main options"
3467 " gnutls_require_kx, gnutls_require_mac and gnutls_require_protocols"
3469 #endif /*SUPPORT_TLS*/
3474 /*************************************************
3475 * Initialize one driver *
3476 *************************************************/
3478 /* This is called once the driver's generic options, if any, have been read.
3479 We can now find the driver, set up defaults for the private options, and
3480 unset any "set" bits in the private options table (which might have been
3481 set by another incarnation of the same driver).
3484 d pointer to driver instance block, with generic
3486 drivers_available vector of available drivers
3487 size_of_info size of each block in drivers_available
3488 class class of driver, for error message
3490 Returns: pointer to the driver info block
3493 static driver_info
*
3494 init_driver(driver_instance
*d
, driver_info
*drivers_available
,
3495 int size_of_info
, uschar
*class)
3499 for (dd
= drivers_available
; dd
->driver_name
[0] != 0;
3500 dd
= (driver_info
*)(((uschar
*)dd
) + size_of_info
))
3502 if (Ustrcmp(d
->driver_name
, dd
->driver_name
) == 0)
3505 int len
= dd
->options_len
;
3507 d
->options_block
= store_get(len
);
3508 memcpy(d
->options_block
, dd
->options_block
, len
);
3509 for (i
= 0; i
< *(dd
->options_count
); i
++)
3510 dd
->options
[i
].type
&= ~opt_set
;
3515 log_write(0, LOG_PANIC_DIE
|LOG_CONFIG_IN
,
3516 "%s %s: cannot find %s driver \"%s\"", class, d
->name
, class, d
->driver_name
);
3518 return NULL
; /* never obeyed */
3524 /*************************************************
3525 * Initialize driver list *
3526 *************************************************/
3528 /* This function is called for routers, transports, and authentication
3529 mechanisms. It reads the data from the current point in the configuration file
3530 up to the end of the section, and sets up a chain of instance blocks according
3531 to the file's contents. The file will already have been opened by a call to
3532 readconf_main, and must be left open for subsequent reading of further data.
3534 Any errors cause a panic crash. Note that the blocks with names driver_info and
3535 driver_instance must map the first portions of all the _info and _instance
3536 blocks for this shared code to work.
3539 class "router", "transport", or "authenticator"
3540 anchor &routers, &transports, &auths
3541 drivers_available available drivers
3542 size_of_info size of each info block
3543 instance_default points to default data for an instance
3544 instance_size size of instance block
3545 driver_optionlist generic option list
3546 driver_optionlist_count count of generic option list
3552 readconf_driver_init(
3554 driver_instance
**anchor
,
3555 driver_info
*drivers_available
,
3557 void *instance_default
,
3559 optionlist
*driver_optionlist
,
3560 int driver_optionlist_count
)
3562 driver_instance
**p
= anchor
;
3563 driver_instance
*d
= NULL
;
3566 while ((buffer
= get_config_line()) != NULL
)
3571 /* Read the first name on the line and test for the start of a new driver. A
3572 macro definition indicates the end of the previous driver. If this isn't the
3573 start of a new driver, the line will be re-read. */
3575 s
= readconf_readname(name
, sizeof(name
), buffer
);
3577 /* Handle macro definition, first finishing off the initialization of the
3578 previous driver, if any. */
3580 if (isupper(*name
) && *s
== '=')
3584 if (d
->driver_name
== NULL
)
3585 log_write(0, LOG_PANIC_DIE
|LOG_CONFIG
,
3586 "no driver defined for %s \"%s\"", class, d
->name
);
3590 read_macro_assignment(buffer
);
3594 /* If the line starts with a name terminated by a colon, we are at the
3595 start of the definition of a new driver. The rest of the line must be
3602 /* Finish off initializing the previous driver. */
3606 if (d
->driver_name
== NULL
)
3607 log_write(0, LOG_PANIC_DIE
|LOG_CONFIG
,
3608 "no driver defined for %s \"%s\"", class, d
->name
);
3612 /* Check that we haven't already got a driver of this name */
3614 for (d
= *anchor
; d
!= NULL
; d
= d
->next
)
3615 if (Ustrcmp(name
, d
->name
) == 0)
3616 log_write(0, LOG_PANIC_DIE
|LOG_CONFIG
,
3617 "there are two %ss called \"%s\"", class, name
);
3619 /* Set up a new driver instance data block on the chain, with
3620 its default values installed. */
3622 d
= store_get(instance_size
);
3623 memcpy(d
, instance_default
, instance_size
);
3626 d
->name
= string_copy(name
);
3628 /* Clear out the "set" bits in the generic options */
3630 for (i
= 0; i
< driver_optionlist_count
; i
++)
3631 driver_optionlist
[i
].type
&= ~opt_set
;
3633 /* Check nothing more on this line, then do the next loop iteration. */
3635 while (isspace(*s
)) s
++;
3636 if (*s
!= 0) extra_chars_error(s
, US
"driver name ", name
, US
"");
3640 /* Not the start of a new driver. Give an error if we have not set up a
3641 current driver yet. */
3643 if (d
== NULL
) log_write(0, LOG_PANIC_DIE
|LOG_CONFIG_IN
,
3644 "%s name missing", class);
3646 /* First look to see if this is a generic option; if it is "driver",
3647 initialize the driver. If is it not a generic option, we can look for a
3648 private option provided that the driver has been previously set up. */
3650 if (readconf_handle_option(buffer
, driver_optionlist
,
3651 driver_optionlist_count
, d
, NULL
))
3653 if (d
->info
== NULL
&& d
->driver_name
!= NULL
)
3654 init_driver(d
, drivers_available
, size_of_info
, class);
3657 /* Handle private options - pass the generic block because some may
3658 live therein. A flag with each option indicates if it is in the public
3661 else if (d
->info
!= NULL
)
3663 readconf_handle_option(buffer
, d
->info
->options
,
3664 *(d
->info
->options_count
), d
, US
"option \"%s\" unknown");
3667 /* The option is not generic and the driver name has not yet been given. */
3669 else log_write(0, LOG_PANIC_DIE
|LOG_CONFIG_IN
, "option \"%s\" unknown "
3670 "(\"driver\" must be specified before any private options)", name
);
3673 /* Run the initialization function for the final driver. */
3677 if (d
->driver_name
== NULL
)
3678 log_write(0, LOG_PANIC_DIE
|LOG_CONFIG
,
3679 "no driver defined for %s \"%s\"", class, d
->name
);
3686 /*************************************************
3687 * Check driver dependency *
3688 *************************************************/
3690 /* This function is passed a driver instance and a string. It checks whether
3691 any of the string options for the driver contains the given string as an
3695 d points to a driver instance block
3696 s the string to search for
3698 Returns: TRUE if a dependency is found
3702 readconf_depends(driver_instance
*d
, uschar
*s
)
3704 int count
= *(d
->info
->options_count
);
3708 for (ol
= d
->info
->options
; ol
< d
->info
->options
+ count
; ol
++)
3710 void *options_block
;
3712 int type
= ol
->type
& opt_mask
;
3713 if (type
!= opt_stringptr
) continue;
3714 options_block
= ((ol
->type
& opt_public
) == 0)? d
->options_block
: (void *)d
;
3715 value
= *(uschar
**)((uschar
*)options_block
+ (long int)(ol
->value
));
3716 if (value
!= NULL
&& (ss
= Ustrstr(value
, s
)) != NULL
)
3718 if (ss
<= value
|| (ss
[-1] != '$' && ss
[-1] != '{') ||
3719 isalnum(ss
[Ustrlen(s
)])) continue;
3720 DEBUG(D_transport
) debug_printf("driver %s: \"%s\" option depends on %s\n",
3721 d
->name
, ol
->name
, s
);
3726 DEBUG(D_transport
) debug_printf("driver %s does not depend on %s\n", d
->name
, s
);
3733 /*************************************************
3734 * Decode an error type for retries *
3735 *************************************************/
3737 /* This function is global because it is also called from the main
3738 program when testing retry information. It decodes strings such as "quota_7d"
3739 into numerical error codes.
3742 pp points to start of text
3743 p points past end of text
3744 basic_errno points to an int to receive the main error number
3745 more_errno points to an int to receive the secondary error data
3747 Returns: NULL if decoded correctly; else points to error text
3751 readconf_retry_error(const uschar
*pp
, const uschar
*p
,
3752 int *basic_errno
, int *more_errno
)
3755 const uschar
*q
= pp
;
3756 while (q
< p
&& *q
!= '_') q
++;
3759 if (len
== 5 && strncmpic(pp
, US
"quota", len
) == 0)
3761 *basic_errno
= ERRNO_EXIMQUOTA
;
3762 if (q
!= p
&& (*more_errno
= readconf_readtime(q
+1, *p
, FALSE
)) < 0)
3763 return US
"bad time value";
3766 else if (len
== 7 && strncmpic(pp
, US
"refused", len
) == 0)
3768 *basic_errno
= ECONNREFUSED
;
3771 if (strncmpic(q
+1, US
"MX", p
-q
-1) == 0) *more_errno
= 'M';
3772 else if (strncmpic(q
+1, US
"A", p
-q
-1) == 0) *more_errno
= 'A';
3773 else return US
"A or MX expected after \"refused\"";
3777 else if (len
== 7 && strncmpic(pp
, US
"timeout", len
) == 0)
3779 *basic_errno
= ETIMEDOUT
;
3783 int xlen
= p
- q
- 1;
3784 const uschar
*x
= q
+ 1;
3786 static uschar
*extras
[] =
3787 { US
"A", US
"MX", US
"connect", US
"connect_A", US
"connect_MX" };
3788 static int values
[] =
3789 { 'A', 'M', RTEF_CTOUT
, RTEF_CTOUT
|'A', RTEF_CTOUT
|'M' };
3791 for (i
= 0; i
< sizeof(extras
)/sizeof(uschar
*); i
++)
3792 if (strncmpic(x
, extras
[i
], xlen
) == 0)
3794 *more_errno
= values
[i
];
3798 if (i
>= sizeof(extras
)/sizeof(uschar
*))
3799 if (strncmpic(x
, US
"DNS", xlen
) == 0)
3800 log_write(0, LOG_MAIN
|LOG_PANIC
, "\"timeout_dns\" is no longer "
3801 "available in retry rules (it has never worked) - treated as "
3804 return US
"\"A\", \"MX\", or \"connect\" expected after \"timeout\"";
3808 else if (strncmpic(pp
, US
"mail_4", 6) == 0 ||
3809 strncmpic(pp
, US
"rcpt_4", 6) == 0 ||
3810 strncmpic(pp
, US
"data_4", 6) == 0)
3813 int x
= 255; /* means "any 4xx code" */
3814 if (p
!= pp
+ 8) bad
= TRUE
; else
3816 int a
= pp
[6], b
= pp
[7];
3820 if (isdigit(b
)) x
+= b
- '0';
3821 else if (b
== 'x') x
+= 100;
3824 else if (a
!= 'x' || b
!= 'x') bad
= TRUE
;
3828 return string_sprintf("%.4s_4 must be followed by xx, dx, or dd, where "
3829 "x is literal and d is any digit", pp
);
3831 *basic_errno
= *pp
== 'm' ? ERRNO_MAIL4XX
:
3832 *pp
== 'r' ? ERRNO_RCPT4XX
: ERRNO_DATA4XX
;
3833 *more_errno
= x
<< 8;
3836 else if (len
== 4 && strncmpic(pp
, US
"auth", len
) == 0 &&
3837 strncmpic(q
+1, US
"failed", p
-q
-1) == 0)
3838 *basic_errno
= ERRNO_AUTHFAIL
;
3840 else if (strncmpic(pp
, US
"lost_connection", p
- pp
) == 0)
3841 *basic_errno
= ERRNO_SMTPCLOSED
;
3843 else if (strncmpic(pp
, US
"tls_required", p
- pp
) == 0)
3844 *basic_errno
= ERRNO_TLSREQUIRED
;
3846 else if (strncmpic(pp
, US
"lookup", p
- pp
) == 0)
3847 *basic_errno
= ERRNO_UNKNOWNHOST
;
3849 else if (len
!= 1 || Ustrncmp(pp
, "*", 1) != 0)
3850 return string_sprintf("unknown or malformed retry error \"%.*s\"", (int) (p
-pp
), pp
);
3858 /*************************************************
3859 * Read retry information *
3860 *************************************************/
3862 /* Each line of retry information contains:
3864 . A domain name pattern or an address pattern;
3866 . An error name, possibly with additional data, or *;
3868 . An optional sequence of retry items, each consisting of an identifying
3869 letter, a cutoff time, and optional parameters.
3871 All this is decoded and placed into a control block. */
3874 /* Subroutine to read an argument, preceded by a comma and terminated
3875 by comma, semicolon, whitespace, or newline. The types are: 0 = time value,
3876 1 = fixed point number (returned *1000).
3879 paddr pointer to pointer to current character; updated
3880 type 0 => read a time; 1 => read a fixed point number
3882 Returns: time in seconds or fixed point number * 1000
3886 retry_arg(const uschar
**paddr
, int type
)
3888 const uschar
*p
= *paddr
;
3891 if (*p
++ != ',') log_write(0, LOG_PANIC_DIE
|LOG_CONFIG_IN
, "comma expected");
3893 while (isspace(*p
)) p
++;
3895 while (isalnum(*p
) || (type
== 1 && *p
== '.')) p
++;
3897 if (*p
!= 0 && !isspace(*p
) && *p
!= ',' && *p
!= ';')
3898 log_write(0, LOG_PANIC_DIE
|LOG_CONFIG_IN
, "comma or semicolon expected");
3903 case 0: return readconf_readtime(pp
, *p
, FALSE
);
3904 case 1: return readconf_readfixed(pp
, *p
);
3906 return 0; /* Keep picky compilers happy */
3909 /* The function proper */
3912 readconf_retries(void)
3914 retry_config
**chain
= &retries
;
3918 while ((p
= get_config_line()))
3920 retry_rule
**rchain
;
3924 next
= store_get(sizeof(retry_config
));
3927 chain
= &(next
->next
);
3928 next
->basic_errno
= next
->more_errno
= 0;
3929 next
->senders
= NULL
;
3931 rchain
= &(next
->rules
);
3933 next
->pattern
= string_dequote(&p
);
3934 while (isspace(*p
)) p
++;
3936 while (mac_isgraph(*p
)) p
++;
3937 if (p
- pp
<= 0) log_write(0, LOG_PANIC_DIE
|LOG_CONFIG_IN
,
3938 "missing error type in retry rule");
3940 /* Test error names for things we understand. */
3942 if ((error
= readconf_retry_error(pp
, p
, &next
->basic_errno
,
3943 &next
->more_errno
)))
3944 log_write(0, LOG_PANIC_DIE
|LOG_CONFIG_IN
, "%s", error
);
3946 /* There may be an optional address list of senders to be used as another
3947 constraint on the rule. This was added later, so the syntax is a bit of a
3948 fudge. Anything that is not a retry rule starting "F," or "G," is treated as
3951 while (isspace(*p
)) p
++;
3952 if (Ustrncmp(p
, "senders", 7) == 0)
3955 while (isspace(*p
)) p
++;
3956 if (*p
++ != '=') log_write(0, LOG_PANIC_DIE
|LOG_CONFIG_IN
,
3957 "\"=\" expected after \"senders\" in retry rule");
3958 while (isspace(*p
)) p
++;
3959 next
->senders
= string_dequote(&p
);
3962 /* Now the retry rules. Keep the maximum timeout encountered. */
3964 while (isspace(*p
)) p
++;
3968 retry_rule
*rule
= store_get(sizeof(retry_rule
));
3970 rchain
= &(rule
->next
);
3972 rule
->rule
= toupper(*p
++);
3973 rule
->timeout
= retry_arg(&p
, 0);
3974 if (rule
->timeout
> retry_maximum_timeout
)
3975 retry_maximum_timeout
= rule
->timeout
;
3979 case 'F': /* Fixed interval */
3980 rule
->p1
= retry_arg(&p
, 0);
3983 case 'G': /* Geometrically increasing intervals */
3984 case 'H': /* Ditto, but with randomness */
3985 rule
->p1
= retry_arg(&p
, 0);
3986 rule
->p2
= retry_arg(&p
, 1);
3990 log_write(0, LOG_PANIC_DIE
|LOG_CONFIG_IN
, "unknown retry rule letter");
3994 if (rule
->timeout
<= 0 || rule
->p1
<= 0 ||
3995 (rule
->rule
!= 'F' && rule
->p2
< 1000))
3996 log_write(0, LOG_PANIC_DIE
|LOG_CONFIG_IN
,
3997 "bad parameters for retry rule");
3999 while (isspace(*p
)) p
++;
4003 while (isspace(*p
)) p
++;
4006 log_write(0, LOG_PANIC_DIE
|LOG_CONFIG_IN
, "semicolon expected");
4013 /*************************************************
4014 * Initialize authenticators *
4015 *************************************************/
4017 /* Read the authenticators section of the configuration file.
4026 auth_instance
*au
, *bu
;
4027 readconf_driver_init(US
"authenticator",
4028 (driver_instance
**)(&auths
), /* chain anchor */
4029 (driver_info
*)auths_available
, /* available drivers */
4030 sizeof(auth_info
), /* size of info block */
4031 &auth_defaults
, /* default values for generic options */
4032 sizeof(auth_instance
), /* size of instance block */
4033 optionlist_auths
, /* generic options */
4034 optionlist_auths_size
);
4036 for (au
= auths
; au
!= NULL
; au
= au
->next
)
4038 if (au
->public_name
== NULL
)
4039 log_write(0, LOG_PANIC_DIE
|LOG_CONFIG
, "no public name specified for "
4040 "the %s authenticator", au
->name
);
4041 for (bu
= au
->next
; bu
!= NULL
; bu
= bu
->next
)
4043 if (strcmpic(au
->public_name
, bu
->public_name
) == 0)
4045 if ((au
->client
&& bu
->client
) || (au
->server
&& bu
->server
))
4046 log_write(0, LOG_PANIC_DIE
|LOG_CONFIG
, "two %s authenticators "
4047 "(%s and %s) have the same public name (%s)",
4048 (au
->client
)? US
"client" : US
"server", au
->name
, bu
->name
,
4058 /*************************************************
4059 * Read ACL information *
4060 *************************************************/
4062 /* If this run of Exim is not doing something that involves receiving a
4063 message, we can just skip over the ACL information. No need to parse it.
4065 First, we have a function for acl_read() to call back to get the next line. We
4066 need to remember the line we passed, because at the end it will contain the
4067 name of the next ACL. */
4069 static uschar
*acl_line
;
4074 acl_line
= get_config_line();
4079 /* Now the main function:
4090 /* Read each ACL and add it into the tree. Macro (re)definitions are allowed
4093 acl_line
= get_config_line();
4095 while(acl_line
!= NULL
)
4101 p
= readconf_readname(name
, sizeof(name
), acl_line
);
4102 if (isupper(*name
) && *p
== '=')
4104 read_macro_assignment(acl_line
);
4105 acl_line
= get_config_line();
4109 if (*p
!= ':' || name
[0] == 0)
4110 log_write(0, LOG_PANIC_DIE
|LOG_CONFIG_IN
, "missing or malformed ACL name");
4112 node
= store_get(sizeof(tree_node
) + Ustrlen(name
));
4113 Ustrcpy(node
->name
, name
);
4114 if (!tree_insertnode(&acl_anchor
, node
))
4115 log_write(0, LOG_PANIC_DIE
|LOG_CONFIG_IN
,
4116 "there are two ACLs called \"%s\"", name
);
4118 node
->data
.ptr
= acl_read(acl_callback
, &error
);
4120 if (node
->data
.ptr
== NULL
&& error
!= NULL
)
4121 log_write(0, LOG_PANIC_DIE
|LOG_CONFIG_IN
, "error in ACL: %s", error
);
4127 /*************************************************
4128 * Read configuration for local_scan() *
4129 *************************************************/
4131 /* This function is called after "begin local_scan" is encountered in the
4132 configuration file. If the local_scan() function allows for configuration
4133 options, we can process them. Otherwise, we expire in a panic.
4140 local_scan_init(void)
4142 #ifndef LOCAL_SCAN_HAS_OPTIONS
4143 log_write(0, LOG_PANIC_DIE
|LOG_CONFIG_IN
, "local_scan() options not supported: "
4144 "(LOCAL_SCAN_HAS_OPTIONS not defined in Local/Makefile)");
4148 while ((p
= get_config_line()) != NULL
)
4150 (void) readconf_handle_option(p
, local_scan_options
, local_scan_options_count
,
4151 NULL
, US
"local_scan option \"%s\" unknown");
4158 /*************************************************
4159 * Read rest of configuration (after main) *
4160 *************************************************/
4162 /* This function reads the rest of the runtime configuration, after the main
4163 configuration. It is called only when actually needed. Each subsequent section
4164 of the configuration starts with a line of the form
4168 where the name is "routers", "transports", etc. A section is terminated by
4169 hitting the next "begin" line, and the next name is left in next_section.
4170 Because it may confuse people as to whether the names are singular or plural,
4171 we add "s" if it's missing. There is always enough room in next_section for
4172 this. This function is basically just a switch.
4178 static uschar
*section_list
[] = {
4192 while(next_section
[0] != 0)
4196 int last
= sizeof(section_list
) / sizeof(uschar
*);
4198 int n
= Ustrlen(next_section
);
4200 if (tolower(next_section
[n
-1]) != 's') Ustrcpy(next_section
+n
, "s");
4204 int c
= strcmpic(next_section
, section_list
[mid
]);
4206 if (c
> 0) first
= mid
+ 1; else last
= mid
;
4208 log_write(0, LOG_PANIC_DIE
|LOG_CONFIG_IN
,
4209 "\"%.*s\" is not a known configuration section name", n
, next_section
);
4210 mid
= (last
+ first
)/2;
4214 if (((had
^= bit
) & bit
) == 0)
4215 log_write(0, LOG_PANIC_DIE
|LOG_CONFIG_IN
,
4216 "\"%.*s\" section is repeated in the configuration file", n
,
4221 case 0: readconf_acl(); break;
4222 case 1: auths_init(); break;
4223 case 2: local_scan_init(); break;
4224 case 3: readconf_retries(); break;
4225 case 4: readconf_rewrites(); break;
4226 case 5: route_init(); break;
4227 case 6: transport_init(); break;
4231 (void)fclose(config_file
);
4234 /* Init the storage for the pre-parsed config lines */
4236 readconf_save_config(const uschar
*s
)
4238 save_config_line(string_sprintf("# Exim Configuration (%s)",
4239 running_in_test_harness
? US
"X" : s
));
4243 save_config_position(const uschar
*file
, int line
)
4245 save_config_line(string_sprintf("# %d \"%s\"", line
, file
));
4248 /* Append a pre-parsed logical line to the config lines store,
4249 this operates on a global (static) list that holds all the pre-parsed
4250 config lines, we do no further processing here, output formatting and
4251 honouring of <hide> or macros will be done during output */
4253 save_config_line(const uschar
* line
)
4255 static config_line_item
*current
;
4256 config_line_item
*next
;
4258 next
= (config_line_item
*) store_get(sizeof(config_line_item
));
4259 next
->line
= string_copy(line
);
4262 if (!config_lines
) config_lines
= next
;
4263 else current
->next
= next
;
4268 /* List the parsed config lines, care about nice formatting and
4269 hide the <hide> values unless we're the admin user */
4271 print_config(BOOL admin
)
4273 config_line_item
*i
;
4277 for (i
= config_lines
; i
; i
= i
->next
)
4282 /* skip over to the first non-space */
4283 for (current
= i
->line
; *current
&& isspace(*current
); ++current
)
4286 if (*current
== '\0')
4289 /* Collapse runs of spaces. We stop this if we encounter one of the
4290 * following characters: "'$, as this may indicate careful formatting */
4291 for (p
= current
; *p
; ++p
)
4294 if (!isspace(*p
)) continue;
4295 if (*p
!= ' ') *p
= ' ';
4297 for (next
= p
; isspace(*next
); ++next
)
4301 memmove(p
+1, next
, Ustrlen(next
)+1);
4303 if (*next
== '"' || *next
== '\'' || *next
== '$')
4308 if (current
[0] == '#')
4311 /* begin lines are left aligned */
4312 else if (Ustrncmp(current
, "begin", 5) == 0 && isspace(current
[5]))
4319 /* router/acl/transport block names */
4320 else if (current
[Ustrlen(current
)-1] == ':' && !Ustrchr(current
, '='))
4322 printf("\n%*s%s\n", TS
, "", current
);
4326 /* hidden lines (all MACROS or lines prefixed with "hide") */
4328 && ( isupper(*current
)
4329 || Ustrncmp(current
, "hide", 4) == 0 && isspace(current
[4])
4333 if ((p
= Ustrchr(current
, '=')))
4336 printf("%*s%s= %s\n", indent
, "", current
, hidden
);
4338 /* e.g.: hide split_spool_directory */
4340 printf("%*s\n", indent
, hidden
);
4344 /* rest is public */
4345 printf("%*s%s\n", indent
, "", current
);
4351 /* End of readconf.c */