1 /* $Cambridge: exim/src/src/readconf.c,v 1.14 2005/09/19 14:01:51 ph10 Exp $ */
3 /*************************************************
4 * Exim - an Internet mail transport agent *
5 *************************************************/
7 /* Copyright (c) University of Cambridge 1995 - 2005 */
8 /* See the file NOTICE for conditions of use and distribution. */
10 /* Functions for reading the configuration file, and for displaying
11 overall configuration values. Thanks to Brian Candler for the original
12 implementation of the conditional .ifdef etc. */
16 #define CSTATE_STACK_SIZE 10
19 /* Structure for chain (stack) of .included files */
21 typedef struct config_file_item {
22 struct config_file_item *next;
28 /* Structure of table of conditional words and their state transitions */
30 typedef struct cond_item {
38 /* Structure of table of syslog facility names and values */
40 typedef struct syslog_fac_item {
46 /* Static variables */
48 static config_file_item *config_file_stack = NULL; /* For includes */
50 static uschar *syslog_facility_str = NULL;
51 static uschar next_section[24];
52 static uschar time_buffer[24];
54 /* State variables for conditional loading (.ifdef / .else / .endif) */
56 static int cstate = 0;
57 static int cstate_stack_ptr = -1;
58 static int cstate_stack[CSTATE_STACK_SIZE];
60 /* Table of state transitions for handling conditional inclusions. There are
61 four possible state transitions:
65 .elifdef true (or .else)
68 .endif just causes the previous cstate to be popped off the stack */
70 static int next_cstate[3][4] =
72 /* State 0: reading from file, or reading until next .else or .endif */
74 /* State 1: condition failed, skipping until next .else or .endif */
76 /* State 2: skipping until .endif */
80 /* Table of conditionals and the states to set. For each name, there are four
81 values: the length of the name (to save computing it each time), the state to
82 set if a macro was found in the line, the state to set if a macro was not found
83 in the line, and a stack manipulation setting which is:
85 -1 pull state value off the stack
86 0 don't alter the stack
87 +1 push value onto stack, before setting new state
90 static cond_item cond_list[] = {
91 { US"ifdef", 5, 0, 1, 1 },
92 { US"ifndef", 6, 1, 0, 1 },
93 { US"elifdef", 7, 2, 3, 0 },
94 { US"elifndef", 8, 3, 2, 0 },
95 { US"else", 4, 2, 2, 0 },
96 { US"endif", 5, 0, 0, -1 }
99 static int cond_list_size = sizeof(cond_list)/sizeof(cond_item);
101 /* Table of syslog facility names and their values */
103 static syslog_fac_item syslog_list[] = {
104 { US"mail", LOG_MAIL },
105 { US"user", LOG_USER },
106 { US"news", LOG_NEWS },
107 { US"uucp", LOG_UUCP },
108 { US"local0", LOG_LOCAL0 },
109 { US"local1", LOG_LOCAL1 },
110 { US"local2", LOG_LOCAL2 },
111 { US"local3", LOG_LOCAL3 },
112 { US"local4", LOG_LOCAL4 },
113 { US"local5", LOG_LOCAL5 },
114 { US"local6", LOG_LOCAL6 },
115 { US"local7", LOG_LOCAL7 },
116 { US"daemon", LOG_DAEMON }
119 static int syslog_list_size = sizeof(syslog_list)/sizeof(syslog_fac_item);
124 /*************************************************
125 * Main configuration options *
126 *************************************************/
128 /* The list of options that can be set in the main configuration file. This
129 must be in alphabetic order because it is searched by binary chop. */
131 static optionlist optionlist_config[] = {
132 { "*set_exim_group", opt_bool|opt_hidden, &exim_gid_set },
133 { "*set_exim_user", opt_bool|opt_hidden, &exim_uid_set },
134 { "*set_system_filter_group", opt_bool|opt_hidden, &system_filter_gid_set },
135 { "*set_system_filter_user", opt_bool|opt_hidden, &system_filter_uid_set },
136 { "accept_8bitmime", opt_bool, &accept_8bitmime },
137 { "acl_not_smtp", opt_stringptr, &acl_not_smtp },
138 #ifdef WITH_CONTENT_SCAN
139 { "acl_not_smtp_mime", opt_stringptr, &acl_not_smtp_mime },
141 { "acl_smtp_auth", opt_stringptr, &acl_smtp_auth },
142 { "acl_smtp_connect", opt_stringptr, &acl_smtp_connect },
143 { "acl_smtp_data", opt_stringptr, &acl_smtp_data },
144 { "acl_smtp_etrn", opt_stringptr, &acl_smtp_etrn },
145 { "acl_smtp_expn", opt_stringptr, &acl_smtp_expn },
146 { "acl_smtp_helo", opt_stringptr, &acl_smtp_helo },
147 { "acl_smtp_mail", opt_stringptr, &acl_smtp_mail },
148 { "acl_smtp_mailauth", opt_stringptr, &acl_smtp_mailauth },
149 #ifdef WITH_CONTENT_SCAN
150 { "acl_smtp_mime", opt_stringptr, &acl_smtp_mime },
152 { "acl_smtp_predata", opt_stringptr, &acl_smtp_predata },
153 { "acl_smtp_quit", opt_stringptr, &acl_smtp_quit },
154 { "acl_smtp_rcpt", opt_stringptr, &acl_smtp_rcpt },
156 { "acl_smtp_starttls", opt_stringptr, &acl_smtp_starttls },
158 { "acl_smtp_vrfy", opt_stringptr, &acl_smtp_vrfy },
159 { "admin_groups", opt_gidlist, &admin_groups },
160 { "allow_domain_literals", opt_bool, &allow_domain_literals },
161 { "allow_mx_to_ip", opt_bool, &allow_mx_to_ip },
162 { "allow_utf8_domains", opt_bool, &allow_utf8_domains },
163 { "auth_advertise_hosts", opt_stringptr, &auth_advertise_hosts },
164 { "auto_thaw", opt_time, &auto_thaw },
165 #ifdef WITH_CONTENT_SCAN
166 { "av_scanner", opt_stringptr, &av_scanner },
168 { "bi_command", opt_stringptr, &bi_command },
169 #ifdef EXPERIMENTAL_BRIGHTMAIL
170 { "bmi_config_file", opt_stringptr, &bmi_config_file },
172 { "bounce_message_file", opt_stringptr, &bounce_message_file },
173 { "bounce_message_text", opt_stringptr, &bounce_message_text },
174 { "bounce_return_body", opt_bool, &bounce_return_body },
175 { "bounce_return_message", opt_bool, &bounce_return_message },
176 { "bounce_return_size_limit", opt_mkint, &bounce_return_size_limit },
177 { "bounce_sender_authentication",opt_stringptr,&bounce_sender_authentication },
178 { "callout_domain_negative_expire", opt_time, &callout_cache_domain_negative_expire },
179 { "callout_domain_positive_expire", opt_time, &callout_cache_domain_positive_expire },
180 { "callout_negative_expire", opt_time, &callout_cache_negative_expire },
181 { "callout_positive_expire", opt_time, &callout_cache_positive_expire },
182 { "callout_random_local_part",opt_stringptr, &callout_random_local_part },
183 { "check_log_inodes", opt_int, &check_log_inodes },
184 { "check_log_space", opt_Kint, &check_log_space },
185 { "check_spool_inodes", opt_int, &check_spool_inodes },
186 { "check_spool_space", opt_Kint, &check_spool_space },
187 { "daemon_smtp_port", opt_stringptr|opt_hidden, &daemon_smtp_port },
188 { "daemon_smtp_ports", opt_stringptr, &daemon_smtp_port },
189 { "daemon_startup_retries", opt_int, &daemon_startup_retries },
190 { "daemon_startup_sleep", opt_time, &daemon_startup_sleep },
191 { "delay_warning", opt_timelist, &delay_warning },
192 { "delay_warning_condition", opt_stringptr, &delay_warning_condition },
193 { "deliver_drop_privilege", opt_bool, &deliver_drop_privilege },
194 { "deliver_queue_load_max", opt_fixed, &deliver_queue_load_max },
195 { "delivery_date_remove", opt_bool, &delivery_date_remove },
196 { "dns_again_means_nonexist", opt_stringptr, &dns_again_means_nonexist },
197 { "dns_check_names_pattern", opt_stringptr, &check_dns_names_pattern },
198 { "dns_csa_search_limit", opt_int, &dns_csa_search_limit },
199 { "dns_csa_use_reverse", opt_bool, &dns_csa_use_reverse },
200 { "dns_ipv4_lookup", opt_stringptr, &dns_ipv4_lookup },
201 { "dns_retrans", opt_time, &dns_retrans },
202 { "dns_retry", opt_int, &dns_retry },
203 /* This option is now a no-op, retained for compability */
204 { "drop_cr", opt_bool, &drop_cr },
205 /*********************************************************/
206 { "envelope_to_remove", opt_bool, &envelope_to_remove },
207 { "errors_copy", opt_stringptr, &errors_copy },
208 { "errors_reply_to", opt_stringptr, &errors_reply_to },
209 { "exim_group", opt_gid, &exim_gid },
210 { "exim_path", opt_stringptr, &exim_path },
211 { "exim_user", opt_uid, &exim_uid },
212 { "extra_local_interfaces", opt_stringptr, &extra_local_interfaces },
213 { "extract_addresses_remove_arguments", opt_bool, &extract_addresses_remove_arguments },
214 { "finduser_retries", opt_int, &finduser_retries },
215 { "freeze_tell", opt_stringptr, &freeze_tell },
216 { "gecos_name", opt_stringptr, &gecos_name },
217 { "gecos_pattern", opt_stringptr, &gecos_pattern },
218 { "header_line_maxsize", opt_int, &header_line_maxsize },
219 { "header_maxsize", opt_int, &header_maxsize },
220 { "headers_charset", opt_stringptr, &headers_charset },
221 { "helo_accept_junk_hosts", opt_stringptr, &helo_accept_junk_hosts },
222 { "helo_allow_chars", opt_stringptr, &helo_allow_chars },
223 { "helo_lookup_domains", opt_stringptr, &helo_lookup_domains },
224 { "helo_try_verify_hosts", opt_stringptr, &helo_try_verify_hosts },
225 { "helo_verify_hosts", opt_stringptr, &helo_verify_hosts },
226 { "hold_domains", opt_stringptr, &hold_domains },
227 { "host_lookup", opt_stringptr, &host_lookup },
228 { "host_lookup_order", opt_stringptr, &host_lookup_order },
229 { "host_reject_connection", opt_stringptr, &host_reject_connection },
230 { "hosts_connection_nolog", opt_stringptr, &hosts_connection_nolog },
231 { "hosts_treat_as_local", opt_stringptr, &hosts_treat_as_local },
233 { "ibase_servers", opt_stringptr, &ibase_servers },
235 { "ignore_bounce_errors_after", opt_time, &ignore_bounce_errors_after },
236 { "ignore_fromline_hosts", opt_stringptr, &ignore_fromline_hosts },
237 { "ignore_fromline_local", opt_bool, &ignore_fromline_local },
238 { "keep_malformed", opt_time, &keep_malformed },
240 { "ldap_default_servers", opt_stringptr, &eldap_default_servers },
241 { "ldap_version", opt_int, &eldap_version },
243 { "local_from_check", opt_bool, &local_from_check },
244 { "local_from_prefix", opt_stringptr, &local_from_prefix },
245 { "local_from_suffix", opt_stringptr, &local_from_suffix },
246 { "local_interfaces", opt_stringptr, &local_interfaces },
247 { "local_scan_timeout", opt_time, &local_scan_timeout },
248 { "local_sender_retain", opt_bool, &local_sender_retain },
249 { "localhost_number", opt_stringptr, &host_number_string },
250 { "log_file_path", opt_stringptr, &log_file_path },
251 { "log_selector", opt_stringptr, &log_selector_string },
252 { "log_timezone", opt_bool, &log_timezone },
253 { "lookup_open_max", opt_int, &lookup_open_max },
254 { "max_username_length", opt_int, &max_username_length },
255 { "message_body_visible", opt_mkint, &message_body_visible },
256 { "message_id_header_domain", opt_stringptr, &message_id_domain },
257 { "message_id_header_text", opt_stringptr, &message_id_text },
258 { "message_logs", opt_bool, &message_logs },
259 { "message_size_limit", opt_stringptr, &message_size_limit },
260 #ifdef SUPPORT_MOVE_FROZEN_MESSAGES
261 { "move_frozen_messages", opt_bool, &move_frozen_messages },
263 { "mua_wrapper", opt_bool, &mua_wrapper },
265 { "mysql_servers", opt_stringptr, &mysql_servers },
267 { "never_users", opt_uidlist, &never_users },
269 { "oracle_servers", opt_stringptr, &oracle_servers },
271 { "percent_hack_domains", opt_stringptr, &percent_hack_domains },
273 { "perl_at_start", opt_bool, &opt_perl_at_start },
274 { "perl_startup", opt_stringptr, &opt_perl_startup },
277 { "pgsql_servers", opt_stringptr, &pgsql_servers },
279 { "pid_file_path", opt_stringptr, &pid_file_path },
280 { "pipelining_advertise_hosts", opt_stringptr, &pipelining_advertise_hosts },
281 { "preserve_message_logs", opt_bool, &preserve_message_logs },
282 { "primary_hostname", opt_stringptr, &primary_hostname },
283 { "print_topbitchars", opt_bool, &print_topbitchars },
284 { "process_log_path", opt_stringptr, &process_log_path },
285 { "prod_requires_admin", opt_bool, &prod_requires_admin },
286 { "qualify_domain", opt_stringptr, &qualify_domain_sender },
287 { "qualify_recipient", opt_stringptr, &qualify_domain_recipient },
288 { "queue_domains", opt_stringptr, &queue_domains },
289 { "queue_list_requires_admin",opt_bool, &queue_list_requires_admin },
290 { "queue_only", opt_bool, &queue_only },
291 { "queue_only_file", opt_stringptr, &queue_only_file },
292 { "queue_only_load", opt_fixed, &queue_only_load },
293 { "queue_only_override", opt_bool, &queue_only_override },
294 { "queue_run_in_order", opt_bool, &queue_run_in_order },
295 { "queue_run_max", opt_int, &queue_run_max },
296 { "queue_smtp_domains", opt_stringptr, &queue_smtp_domains },
297 { "receive_timeout", opt_time, &receive_timeout },
298 { "received_header_text", opt_stringptr, &received_header_text },
299 { "received_headers_max", opt_int, &received_headers_max },
300 { "recipient_unqualified_hosts", opt_stringptr, &recipient_unqualified_hosts },
301 { "recipients_max", opt_int, &recipients_max },
302 { "recipients_max_reject", opt_bool, &recipients_max_reject },
303 { "remote_max_parallel", opt_int, &remote_max_parallel },
304 { "remote_sort_domains", opt_stringptr, &remote_sort_domains },
305 { "retry_data_expire", opt_time, &retry_data_expire },
306 { "retry_interval_max", opt_time, &retry_interval_max },
307 { "return_path_remove", opt_bool, &return_path_remove },
308 { "return_size_limit", opt_mkint|opt_hidden, &bounce_return_size_limit },
309 { "rfc1413_hosts", opt_stringptr, &rfc1413_hosts },
310 { "rfc1413_query_timeout", opt_time, &rfc1413_query_timeout },
311 { "sender_unqualified_hosts", opt_stringptr, &sender_unqualified_hosts },
312 { "smtp_accept_keepalive", opt_bool, &smtp_accept_keepalive },
313 { "smtp_accept_max", opt_int, &smtp_accept_max },
314 { "smtp_accept_max_nonmail", opt_int, &smtp_accept_max_nonmail },
315 { "smtp_accept_max_nonmail_hosts", opt_stringptr, &smtp_accept_max_nonmail_hosts },
316 { "smtp_accept_max_per_connection", opt_int, &smtp_accept_max_per_connection },
317 { "smtp_accept_max_per_host", opt_stringptr, &smtp_accept_max_per_host },
318 { "smtp_accept_queue", opt_int, &smtp_accept_queue },
319 { "smtp_accept_queue_per_connection", opt_int, &smtp_accept_queue_per_connection },
320 { "smtp_accept_reserve", opt_int, &smtp_accept_reserve },
321 { "smtp_active_hostname", opt_stringptr, &raw_active_hostname },
322 { "smtp_banner", opt_stringptr, &smtp_banner },
323 { "smtp_check_spool_space", opt_bool, &smtp_check_spool_space },
324 { "smtp_connect_backlog", opt_int, &smtp_connect_backlog },
325 { "smtp_enforce_sync", opt_bool, &smtp_enforce_sync },
326 { "smtp_etrn_command", opt_stringptr, &smtp_etrn_command },
327 { "smtp_etrn_serialize", opt_bool, &smtp_etrn_serialize },
328 { "smtp_load_reserve", opt_fixed, &smtp_load_reserve },
329 { "smtp_max_synprot_errors", opt_int, &smtp_max_synprot_errors },
330 { "smtp_max_unknown_commands",opt_int, &smtp_max_unknown_commands },
331 { "smtp_ratelimit_hosts", opt_stringptr, &smtp_ratelimit_hosts },
332 { "smtp_ratelimit_mail", opt_stringptr, &smtp_ratelimit_mail },
333 { "smtp_ratelimit_rcpt", opt_stringptr, &smtp_ratelimit_rcpt },
334 { "smtp_receive_timeout", opt_time, &smtp_receive_timeout },
335 { "smtp_reserve_hosts", opt_stringptr, &smtp_reserve_hosts },
336 { "smtp_return_error_details",opt_bool, &smtp_return_error_details },
337 #ifdef WITH_CONTENT_SCAN
338 { "spamd_address", opt_stringptr, &spamd_address },
340 { "split_spool_directory", opt_bool, &split_spool_directory },
341 { "spool_directory", opt_stringptr, &spool_directory },
343 { "sqlite_lock_timeout", opt_int, &sqlite_lock_timeout },
345 #ifdef EXPERIMENTAL_SRS
346 { "srs_config", opt_stringptr, &srs_config },
347 { "srs_hashlength", opt_int, &srs_hashlength },
348 { "srs_hashmin", opt_int, &srs_hashmin },
349 { "srs_maxage", opt_int, &srs_maxage },
350 { "srs_secrets", opt_stringptr, &srs_secrets },
351 { "srs_usehash", opt_bool, &srs_usehash },
352 { "srs_usetimestamp", opt_bool, &srs_usetimestamp },
354 { "strip_excess_angle_brackets", opt_bool, &strip_excess_angle_brackets },
355 { "strip_trailing_dot", opt_bool, &strip_trailing_dot },
356 { "syslog_duplication", opt_bool, &syslog_duplication },
357 { "syslog_facility", opt_stringptr, &syslog_facility_str },
358 { "syslog_processname", opt_stringptr, &syslog_processname },
359 { "syslog_timestamp", opt_bool, &syslog_timestamp },
360 { "system_filter", opt_stringptr, &system_filter },
361 { "system_filter_directory_transport", opt_stringptr,&system_filter_directory_transport },
362 { "system_filter_file_transport",opt_stringptr,&system_filter_file_transport },
363 { "system_filter_group", opt_gid, &system_filter_gid },
364 { "system_filter_pipe_transport",opt_stringptr,&system_filter_pipe_transport },
365 { "system_filter_reply_transport",opt_stringptr,&system_filter_reply_transport },
366 { "system_filter_user", opt_uid, &system_filter_uid },
367 { "tcp_nodelay", opt_bool, &tcp_nodelay },
368 { "timeout_frozen_after", opt_time, &timeout_frozen_after },
369 { "timezone", opt_stringptr, &timezone_string },
371 { "tls_advertise_hosts", opt_stringptr, &tls_advertise_hosts },
372 { "tls_certificate", opt_stringptr, &tls_certificate },
373 { "tls_crl", opt_stringptr, &tls_crl },
374 { "tls_dhparam", opt_stringptr, &tls_dhparam },
375 { "tls_on_connect_ports", opt_stringptr, &tls_on_connect_ports },
376 { "tls_privatekey", opt_stringptr, &tls_privatekey },
377 { "tls_remember_esmtp", opt_bool, &tls_remember_esmtp },
378 { "tls_require_ciphers", opt_stringptr, &tls_require_ciphers },
379 { "tls_try_verify_hosts", opt_stringptr, &tls_try_verify_hosts },
380 { "tls_verify_certificates", opt_stringptr, &tls_verify_certificates },
381 { "tls_verify_hosts", opt_stringptr, &tls_verify_hosts },
383 { "trusted_groups", opt_gidlist, &trusted_groups },
384 { "trusted_users", opt_uidlist, &trusted_users },
385 { "unknown_login", opt_stringptr, &unknown_login },
386 { "unknown_username", opt_stringptr, &unknown_username },
387 { "untrusted_set_sender", opt_stringptr, &untrusted_set_sender },
388 { "uucp_from_pattern", opt_stringptr, &uucp_from_pattern },
389 { "uucp_from_sender", opt_stringptr, &uucp_from_sender },
390 { "warn_message_file", opt_stringptr, &warn_message_file },
391 { "write_rejectlog", opt_bool, &write_rejectlog }
394 static int optionlist_config_size =
395 sizeof(optionlist_config)/sizeof(optionlist);
399 /*************************************************
400 * Find the name of an option *
401 *************************************************/
403 /* This function is to aid debugging. Various functions take arguments that are
404 pointer variables in the options table or in option tables for various drivers.
405 For debugging output, it is useful to be able to find the name of the option
406 which is currently being processed. This function finds it, if it exists, by
407 searching the table(s).
409 Arguments: a value that is presumed to be in the table above
410 Returns: the option name, or an empty string
414 readconf_find_option(void *p)
418 transport_instance *t;
420 for (i = 0; i < optionlist_config_size; i++)
421 if (p == optionlist_config[i].value) return US optionlist_config[i].name;
423 for (r = routers; r != NULL; r = r->next)
425 router_info *ri = r->info;
426 for (i = 0; i < ri->options_count[0]; i++)
428 if ((ri->options[i].type & opt_mask) != opt_stringptr) continue;
429 if (p == (char *)(r->options_block) + (long int)(ri->options[i].value))
430 return US ri->options[i].name;
434 for (t = transports; t != NULL; t = t->next)
436 transport_info *ti = t->info;
437 for (i = 0; i < ti->options_count[0]; i++)
439 if ((ti->options[i].type & opt_mask) != opt_stringptr) continue;
440 if (p == (char *)(t->options_block) + (long int)(ti->options[i].value))
441 return US ti->options[i].name;
451 /*************************************************
452 * Deal with an assignment to a macro *
453 *************************************************/
455 /* This function is called when a line that starts with an upper case letter is
456 encountered. The argument "line" should contain a complete logical line, and
457 start with the first letter of the macro name. The macro name and the
458 replacement text are extracted and stored. Redefinition of existing,
459 non-command line, macros is permitted using '==' instead of '='.
462 s points to the start of the logical line
468 read_macro_assignment(uschar *s)
474 macro_item *mlast = NULL;
476 while (isalnum(*s) || *s == '_')
478 if (namelen >= sizeof(name) - 1)
479 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
480 "macro name too long (maximum is %d characters)", sizeof(name) - 1);
481 name[namelen++] = *s++;
485 while (isspace(*s)) s++;
487 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "malformed macro definition");
494 while (isspace(*s)) s++;
496 /* If an existing macro of the same name was defined on the command line, we
497 just skip this definition. It's an error to attempt to redefine a macro without
498 redef set to TRUE, or to redefine a macro when it hasn't been defined earlier.
499 It is also an error to define a macro whose name begins with the name of a
500 previously defined macro. Note: it is documented that the other way round
503 for (m = macros; m != NULL; m = m->next)
505 int len = Ustrlen(m->name);
507 if (Ustrcmp(m->name, name) == 0)
509 if (!m->command_line && !redef)
510 log_write(0, LOG_CONFIG|LOG_PANIC_DIE, "macro \"%s\" is already "
511 "defined (use \"==\" if you want to redefine it", name);
515 if (len < namelen && Ustrstr(name, m->name) != NULL)
516 log_write(0, LOG_CONFIG|LOG_PANIC_DIE, "\"%s\" cannot be defined as "
517 "a macro because previously defined macro \"%s\" is a substring",
520 /* We cannot have this test, because it is documented that a substring
521 macro is permitted (there is even an example).
523 * if (len > namelen && Ustrstr(m->name, name) != NULL)
524 * log_write(0, LOG_CONFIG|LOG_PANIC_DIE, "\"%s\" cannot be defined as "
525 * "a macro because it is a substring of previously defined macro \"%s\"",
532 /* Check for an overriding command-line definition. */
534 if (m != NULL && m->command_line) return;
536 /* Redefinition must refer to an existing macro. */
541 log_write(0, LOG_CONFIG|LOG_PANIC_DIE, "can't redefine an undefined macro "
545 /* We have a new definition. The macro_item structure includes a final vector
546 called "name" which is one byte long. Thus, adding "namelen" gives us enough
547 room to store the "name" string. */
551 m = store_get(sizeof(macro_item) + namelen);
552 if (macros == NULL) macros = m; else mlast->next = m;
553 Ustrncpy(m->name, name, namelen);
554 m->name[namelen] = 0;
556 m->command_line = FALSE;
559 /* Set the value of the new or redefined macro */
561 m->replacement = string_copy(s);
568 /*************************************************
569 * Read configuration line *
570 *************************************************/
572 /* A logical line of text is read from the configuration file into the big
573 buffer, taking account of macros, .includes, and continuations. The size of
574 big_buffer is increased if necessary. The count of configuration lines is
575 maintained. Physical input lines starting with # (ignoring leading white space,
576 and after macro replacement) and empty logical lines are always ignored.
577 Leading and trailing spaces are removed.
579 If we hit a line of the form "begin xxxx", the xxxx is placed in the
580 next_section vector, and the function returns NULL, indicating the end of a
581 configuration section. On end-of-file, NULL is returned with next_section
586 Returns: a pointer to the first non-blank in the line,
587 or NULL if eof or end of section is reached
591 get_config_line(void)
593 int startoffset = 0; /* To first non-blank char in logical line */
594 int len = 0; /* Of logical line so far */
600 /* Loop for handling continuation lines, skipping comments, and dealing with
605 if (Ufgets(big_buffer+len, big_buffer_size-len, config_file) == NULL)
607 if (config_file_stack != NULL) /* EOF inside .include */
609 (void)fclose(config_file);
610 config_file = config_file_stack->file;
611 config_filename = config_file_stack->filename;
612 config_lineno = config_file_stack->lineno;
613 config_file_stack = config_file_stack->next;
617 /* EOF at top level */
619 if (cstate_stack_ptr >= 0)
620 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
621 "Unexpected end of configuration file: .endif missing");
623 if (len != 0) break; /* EOF after continuation */
624 next_section[0] = 0; /* EOF at start of logical line */
629 newlen = len + Ustrlen(big_buffer + len);
631 /* Handle pathologically long physical lines - yes, it did happen - by
632 extending big_buffer at this point. The code also copes with very long
635 while (newlen == big_buffer_size - 1 && big_buffer[newlen - 1] != '\n')
638 big_buffer_size += BIG_BUFFER_SIZE;
639 newbuffer = store_malloc(big_buffer_size);
641 /* This use of strcpy is OK because we know that the string in the old
642 buffer is shorter than the new buffer. */
644 Ustrcpy(newbuffer, big_buffer);
645 store_free(big_buffer);
646 big_buffer = newbuffer;
647 if (Ufgets(big_buffer+newlen, big_buffer_size-newlen, config_file) == NULL)
649 newlen += Ustrlen(big_buffer + newlen);
652 /* Find the true start of the physical line - leading spaces are always
655 ss = big_buffer + len;
656 while (isspace(*ss)) ss++;
658 /* Process the physical line for macros. If this is the start of the logical
659 line, skip over initial text at the start of the line if it starts with an
660 upper case character followed by a sequence of name characters and an equals
661 sign, because that is the definition of a new macro, and we don't do
662 replacement therein. */
665 if (len == 0 && isupper(*s))
667 while (isalnum(*s) || *s == '_') s++;
668 while (isspace(*s)) s++;
669 if (*s != '=') s = ss; /* Not a macro definition */
672 /* For each defined macro, scan the line (from after XXX= if present),
673 replacing all occurrences of the macro. */
676 for (m = macros; m != NULL; m = m->next)
681 while ((p = Ustrstr(t, m->name)) != NULL)
684 int namelen = Ustrlen(m->name);
685 int replen = Ustrlen(m->replacement);
687 /* Expand the buffer if necessary */
689 while (newlen - namelen + replen + 1 > big_buffer_size)
691 int newsize = big_buffer_size + BIG_BUFFER_SIZE;
692 uschar *newbuffer = store_malloc(newsize);
693 memcpy(newbuffer, big_buffer, newlen + 1);
694 p = newbuffer + (p - big_buffer);
695 s = newbuffer + (s - big_buffer);
696 ss = newbuffer + (ss - big_buffer);
697 t = newbuffer + (t - big_buffer);
698 big_buffer_size = newsize;
699 store_free(big_buffer);
700 big_buffer = newbuffer;
703 /* Shuffle the remaining characters up or down in the buffer before
704 copying in the replacement text. Don't rescan the replacement for this
708 moveby = replen - namelen;
711 memmove(p + replen, pp, (big_buffer + newlen) - pp + 1);
714 Ustrncpy(p, m->replacement, replen);
720 /* An empty macro replacement at the start of a line could mean that ss no
721 longer points to the first non-blank character. */
723 while (isspace(*ss)) ss++;
725 /* Check for comment lines - these are physical lines. */
727 if (*ss == '#') continue;
729 /* Handle conditionals, which are also applied to physical lines. Conditions
730 are of the form ".ifdef ANYTEXT" and are treated as true if any macro
731 expansion occured on the rest of the line. A preliminary test for the leading
732 '.' saves effort on most lines. */
738 /* Search the list of conditional directives */
740 for (i = 0; i < cond_list_size; i++)
743 cond_item *c = cond_list+i;
744 if (Ustrncmp(ss+1, c->name, c->namelen) != 0) continue;
746 /* The following character must be white space or end of string */
748 n = ss[1 + c->namelen];
749 if (n != ' ' && n != 't' && n != '\n' && n != 0) break;
751 /* .ifdef and .ifndef push the current state onto the stack, then set
752 a new one from the table. Stack overflow is an error */
756 if (cstate_stack_ptr >= CSTATE_STACK_SIZE - 1)
757 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
758 ".%s nested too deeply", c->name);
759 cstate_stack[++cstate_stack_ptr] = cstate;
760 cstate = next_cstate[cstate][macro_found? c->action1 : c->action2];
763 /* For any of the others, stack underflow is an error. The next state
764 comes either from the stack (.endif) or from the table. */
768 if (cstate_stack_ptr < 0)
769 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
770 ".%s without matching .ifdef", c->name);
771 cstate = (c->pushpop < 0)? cstate_stack[cstate_stack_ptr--] :
772 next_cstate[cstate][macro_found? c->action1 : c->action2];
775 /* Having dealt with a directive, break the loop */
780 /* If we have handled a conditional directive, continue with the next
781 physical line. Otherwise, fall through. */
783 if (i < cond_list_size) continue;
786 /* If the conditional state is not 0 (actively using these lines), ignore
789 if (cstate != 0) continue; /* Conditional skip */
791 /* Handle .include lines - these are also physical lines. */
793 if (Ustrncmp(ss, ".include", 8) == 0 &&
795 (Ustrncmp(ss+8, "_if_exists", 10) == 0 && isspace(ss[18]))))
798 int include_if_exists = isspace(ss[8])? 0 : 10;
799 config_file_item *save;
802 ss += 9 + include_if_exists;
803 while (isspace(*ss)) ss++;
804 t = ss + Ustrlen(ss);
805 while (t > ss && isspace(t[-1])) t--;
806 if (*ss == '\"' && t[-1] == '\"')
813 if (include_if_exists != 0 && (Ustat(ss, &statbuf) != 0)) continue;
815 save = store_get(sizeof(config_file_item));
816 save->next = config_file_stack;
817 config_file_stack = save;
818 save->file = config_file;
819 save->filename = config_filename;
820 save->lineno = config_lineno;
822 config_file = Ufopen(ss, "rb");
823 if (config_file == NULL)
824 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "failed to open included "
825 "configuration file %s", ss);
826 config_filename = string_copy(ss);
831 /* If this is the start of the logical line, remember where the non-blank
832 data starts. Otherwise shuffle down continuation lines to remove leading
836 startoffset = ss - big_buffer;
839 s = big_buffer + len;
842 memmove(s, ss, (newlen - len) - (ss - s) + 1);
847 /* Accept the new addition to the line. Remove trailing white space. */
850 while (len > 0 && isspace(big_buffer[len-1])) len--;
853 /* We are done if the line does not end in backslash and contains some data.
854 Empty logical lines are ignored. For continuations, remove the backslash and
855 go round the loop to read the continuation line. */
859 if (big_buffer[len-1] != '\\') break; /* End of logical line */
860 big_buffer[--len] = 0; /* Remove backslash */
862 } /* Loop for reading multiple physical lines */
864 /* We now have a logical line. Test for the end of a configuration section (or,
865 more accurately, for the start of the next section). Place the name of the next
866 section in next_section, and return NULL. If the name given is longer than
867 next_section, truncate it. It will be unrecognized later, because all the known
868 section names do fit. Leave space for pluralizing. */
870 s = big_buffer + startoffset; /* First non-space character */
871 if (strncmpic(s, US"begin ", 6) == 0)
874 while (isspace(*s)) s++;
875 if (big_buffer + len - s > sizeof(next_section) - 2)
876 s[sizeof(next_section) - 2] = 0;
877 Ustrcpy(next_section, s);
881 /* Return the first non-blank character. */
888 /*************************************************
890 *************************************************/
892 /* The yield is the pointer to the next uschar. Names longer than the
893 output space are silently truncated. This function is also used from acl.c when
897 name where to put the name
901 Returns: new input pointer
905 readconf_readname(uschar *name, int len, uschar *s)
908 while (isspace(*s)) s++;
911 while (isalnum(*s) || *s == '_')
913 if (p < len-1) name[p++] = *s;
918 while (isspace(*s)) s++;
925 /*************************************************
926 * Read a time value *
927 *************************************************/
929 /* This function is also called from outside, to read argument
930 time values. The format of a time value is:
932 [<n>w][<n>d][<n>h][<n>m][<n>s]
934 as long as at least one is present. If a format error is encountered,
935 return a negative value. The value must be terminated by the given
940 terminator required terminating character
941 return_msec if TRUE, allow fractional seconds and return milliseconds
943 Returns: the time value, or -1 on syntax error
944 value is seconds if return_msec is FALSE
945 value is milliseconds if return_msec is TRUE
949 readconf_readtime(uschar *s, int terminator, BOOL return_msec)
957 if (!isdigit(*s)) return -1;
958 (void)sscanf(CS s, "%d%n", &value, &count);
963 case 'w': value *= 7;
964 case 'd': value *= 24;
965 case 'h': value *= 60;
966 case 'm': value *= 60;
971 if (!return_msec) return -1;
972 (void)sscanf(CS s, "%lf%n", &fraction, &count);
974 if (*s++ != 's') return -1;
975 yield += (int)(fraction * 1000.0);
981 if (return_msec) value *= 1000;
983 if (*s == terminator) return yield;
985 /* Control never reaches here. */
990 /*************************************************
991 * Read a fixed point value *
992 *************************************************/
994 /* The value is returned *1000
998 terminator required terminator
1000 Returns: the value, or -1 on error
1004 readconf_readfixed(uschar *s, int terminator)
1008 if (!isdigit(*s)) return -1;
1009 (void)sscanf(CS s, "%d%n", &value, &count);
1011 yield = value * 1000;
1015 while (isdigit((*(++s))))
1017 yield += (*s - '0') * m;
1022 return (*s == terminator)? yield : (-1);
1027 /*************************************************
1028 * Find option in list *
1029 *************************************************/
1031 /* The lists are always in order, so binary chop can be used.
1034 name the option name to search for
1035 ol the first entry in the option list
1036 last one more than the offset of the last entry in the option list
1038 Returns: pointer to an option entry, or NULL if not found
1042 find_option(uschar *name, optionlist *ol, int last)
1045 while (last > first)
1047 int middle = (first + last)/2;
1048 int c = Ustrcmp(name, ol[middle].name);
1049 if (c == 0) return ol + middle;
1050 else if (c > 0) first = middle + 1;
1058 /*************************************************
1059 * Find a set flag in option list *
1060 *************************************************/
1062 /* Because some versions of Unix make no restrictions on the values of uids and
1063 gids (even negative ones), we cannot represent "unset" by a special value.
1064 There is therefore a separate boolean variable for each one indicating whether
1065 a value is set or not. This function returns a pointer to the boolean, given
1066 the original option name. It is a major disaster if the flag cannot be found.
1069 name the name of the uid or gid option
1070 oltop points to the start of the relevant option list
1071 last one more than the offset of the last item in the option list
1072 data_block NULL when reading main options => data values in the option
1073 list are absolute addresses; otherwise they are byte offsets
1074 in data_block (used for driver options)
1076 Returns: a pointer to the boolean flag.
1080 get_set_flag(uschar *name, optionlist *oltop, int last, void *data_block)
1084 sprintf(CS name2, "*set_%.50s", name);
1085 ol = find_option(name2, oltop, last);
1086 if (ol == NULL) log_write(0, LOG_MAIN|LOG_PANIC_DIE,
1087 "Exim internal error: missing set flag for %s", name);
1088 return (data_block == NULL)? (BOOL *)(ol->value) :
1089 (BOOL *)((uschar *)data_block + (long int)(ol->value));
1095 /*************************************************
1096 * Output extra characters message and die *
1097 *************************************************/
1099 /* Called when an option line has junk on the end. Sometimes this is because
1100 the sysadmin thinks comments are permitted.
1103 s points to the extra characters
1104 t1..t3 strings to insert in the log message
1106 Returns: doesn't return; dies
1110 extra_chars_error(uschar *s, uschar *t1, uschar *t2, uschar *t3)
1112 uschar *comment = US"";
1113 if (*s == '#') comment = US" (# is comment only at line start)";
1114 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1115 "extra characters follow %s%s%s%s", t1, t2, t3, comment);
1120 /*************************************************
1121 * Read rewrite information *
1122 *************************************************/
1124 /* Each line of rewrite information contains:
1126 . A complete address in the form user@domain, possibly with
1127 leading * for each part; or alternatively, a regex.
1129 . A replacement string (which will be expanded).
1131 . An optional sequence of one-letter flags, indicating which
1132 headers etc. to apply this rule to.
1134 All this is decoded and placed into a control block. The OR of the flags is
1135 maintained in a common word.
1138 p points to the string that makes up the rule
1139 existflags points to the overall flag word
1140 isglobal TRUE if reading global rewrite rules
1142 Returns: the control block for the parsed rule.
1145 static rewrite_rule *
1146 readconf_one_rewrite(uschar *p, int *existflags, BOOL isglobal)
1148 rewrite_rule *next = store_get(sizeof(rewrite_rule));
1151 next->key = string_dequote(&p);
1153 while (isspace(*p)) p++;
1155 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1156 "missing rewrite replacement string");
1159 next->replacement = string_dequote(&p);
1161 while (*p != 0) switch (*p++)
1163 case ' ': case '\t': break;
1165 case 'q': next->flags |= rewrite_quit; break;
1166 case 'w': next->flags |= rewrite_whole; break;
1168 case 'h': next->flags |= rewrite_all_headers; break;
1169 case 's': next->flags |= rewrite_sender; break;
1170 case 'f': next->flags |= rewrite_from; break;
1171 case 't': next->flags |= rewrite_to; break;
1172 case 'c': next->flags |= rewrite_cc; break;
1173 case 'b': next->flags |= rewrite_bcc; break;
1174 case 'r': next->flags |= rewrite_replyto; break;
1176 case 'E': next->flags |= rewrite_all_envelope; break;
1177 case 'F': next->flags |= rewrite_envfrom; break;
1178 case 'T': next->flags |= rewrite_envto; break;
1180 case 'Q': next->flags |= rewrite_qualify; break;
1181 case 'R': next->flags |= rewrite_repeat; break;
1184 next->flags |= rewrite_smtp;
1185 if (next->key[0] != '^' && Ustrncmp(next->key, "\\N^", 3) != 0)
1186 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1187 "rewrite rule has the S flag but is not a regular expression");
1191 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1192 "unknown rewrite flag character '%c' "
1193 "(could be missing quotes round replacement item)", p[-1]);
1197 /* If no action flags are set, set all the "normal" rewrites. */
1199 if ((next->flags & (rewrite_all | rewrite_smtp)) == 0)
1200 next->flags |= isglobal? rewrite_all : rewrite_all_headers;
1202 /* Remember which exist, for optimization, and return the rule */
1204 *existflags |= next->flags;
1211 /*************************************************
1212 * Read global rewrite information *
1213 *************************************************/
1215 /* Each line is a single rewrite rule; it is parsed into a control block
1216 by readconf_one_rewrite(), and its flags are ORed into the global flag
1217 word rewrite_existflags. */
1220 readconf_rewrites(void)
1222 rewrite_rule **chain = &global_rewrite_rules;
1225 while ((p = get_config_line()) != NULL)
1227 rewrite_rule *next = readconf_one_rewrite(p, &rewrite_existflags, TRUE);
1229 chain = &(next->next);
1235 /*************************************************
1237 *************************************************/
1239 /* Strings are read into the normal store pool. As long we aren't too
1240 near the end of the current block, the string will just use what is necessary
1241 on the top of the stacking pool, because string_cat() uses the extension
1245 s the rest of the input line
1246 name the option name (for errors)
1248 Returns: pointer to the string
1252 read_string(uschar *s, uschar *name)
1257 if (*s != '\"') return string_copy(s);
1260 yield = string_dequote(&s);
1262 if (s == ss+1 || s[-1] != '\"')
1263 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1264 "missing quote at end of string value for %s", name);
1266 if (*s != 0) extra_chars_error(s, US"string value for ", name, US"");
1272 /*************************************************
1273 * Handle option line *
1274 *************************************************/
1276 /* This function is called from several places to process a line containing the
1277 setting of an option. The first argument is the line to be decoded; it has been
1278 checked not to be empty and not to start with '#'. Trailing newlines and white
1279 space have been removed. The second argument is a pointer to the list of
1280 variable names that are to be recognized, together with their types and
1281 locations, and the third argument gives the number of entries in the list.
1283 The fourth argument is a pointer to a data block. If it is NULL, then the data
1284 values in the options list are absolute addresses. Otherwise, they are byte
1285 offsets in the data block.
1287 String option data may continue onto several lines; this function reads further
1288 data from config_file if necessary.
1290 The yield of this function is normally zero. If a string continues onto
1291 multiple lines, then the data value is permitted to be followed by a comma
1292 or a semicolon (for use in drivers) and the yield is that character.
1295 buffer contains the configuration line to be handled
1296 oltop points to the start of the relevant option list
1297 last one more than the offset of the last item in the option list
1298 data_block NULL when reading main options => data values in the option
1299 list are absolute addresses; otherwise they are byte offsets
1300 in data_block when they have opt_public set; otherwise
1301 they are byte offsets in data_block->options_block.
1302 unknown_txt format string to use in panic message for unknown option;
1303 must contain %s for option name
1304 if given as NULL, don't panic on unknown option
1306 Returns: TRUE if an option was read successfully,
1307 FALSE false for an unknown option if unknown_txt == NULL,
1308 otherwise panic and die on an unknown option
1312 readconf_handle_option(uschar *buffer, optionlist *oltop, int last,
1313 void *data_block, uschar *unknown_txt)
1317 int n, count, type, value;
1321 BOOL boolvalue = TRUE;
1322 BOOL freesptr = TRUE;
1323 optionlist *ol, *ol2;
1327 uschar *inttype = US"";
1333 /* There may be leading spaces; thereafter, we expect an option name starting
1336 while (isspace(*s)) s++;
1338 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "option setting expected: %s", s);
1340 /* Read the name of the option, and skip any subsequent white space. If
1341 it turns out that what we read was "hide", set the flag indicating that
1342 this is a secure option, and loop to read the next word. */
1344 for (n = 0; n < 2; n++)
1346 while (isalnum(*s) || *s == '_')
1348 if (ptr < sizeof(name)-1) name[ptr++] = *s;
1352 while (isspace(*s)) s++;
1353 if (Ustrcmp(name, "hide") != 0) break;
1354 issecure = opt_secure;
1358 /* Deal with "no_" or "not_" here for booleans */
1360 if (Ustrncmp(name, "no_", 3) == 0)
1366 if (Ustrncmp(name, "not_", 4) == 0)
1372 /* Search the list for the given name. A non-existent name, or an option that
1373 is set twice, is a disaster. */
1375 ol = find_option(name + offset, oltop, last);
1379 if (unknown_txt == NULL) return FALSE;
1380 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, CS unknown_txt, name);
1383 if ((ol->type & opt_set) != 0)
1385 uschar *mname = name;
1386 if (Ustrncmp(mname, "no_", 3) == 0) mname += 3;
1387 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1388 "\"%s\" option set for the second time", mname);
1391 ol->type |= opt_set | issecure;
1392 type = ol->type & opt_mask;
1394 /* Types with data values must be followed by '='; the "no[t]_" prefix
1395 applies only to boolean values. */
1397 if (type < opt_bool || type > opt_bool_last)
1400 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1401 "negation prefix applied to a non-boolean option");
1403 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1404 "unexpected end of line (data missing) after %s", name);
1406 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "missing \"=\" after %s", name);
1409 /* If a boolean wasn't preceded by "no[t]_" it can be followed by = and
1410 true/false/yes/no, or, in the case of opt_expanded_bool, a general string that
1411 ultimately expands to one of those values. */
1413 else if (*s != 0 && (offset != 0 || *s != '='))
1414 extra_chars_error(s, US"boolean option ", name, US"");
1416 /* Skip white space after = */
1418 if (*s == '=') while (isspace((*(++s))));
1420 /* If there is a data block and the opt_public flag is not set, change
1421 the data block pointer to the private options block. */
1423 if (data_block != NULL && (ol->type & opt_public) == 0)
1424 data_block = (void *)(((driver_instance *)data_block)->options_block);
1426 /* Now get the data according to the type. */
1430 /* If a string value is not enclosed in quotes, it consists of
1431 the rest of the current line, verbatim. Otherwise, string escapes
1434 A transport is specified as a string, which is then looked up in the
1435 list of transports. A search type is specified as one of a number of
1438 A set or rewrite rules for a driver is specified as a string, which is
1439 then parsed into a suitable chain of control blocks.
1441 Uids and gids are specified as strings which are then looked up in the
1442 passwd file. Lists of uids and gids are similarly specified as colon-
1443 separated strings. */
1448 case opt_expand_uid:
1449 case opt_expand_gid:
1454 reset_point = sptr = read_string(s, name);
1456 /* Having read a string, we now have several different ways of using it,
1457 depending on the data type, so do another switch. If keeping the actual
1458 string is not required (because it is interpreted), freesptr is set TRUE,
1459 and at the end we reset the pool. */
1463 /* If this was a string, set the variable to point to the new string,
1464 and set the flag so its store isn't reclaimed. If it was a list of rewrite
1465 rules, we still keep the string (for printing), and parse the rules into a
1466 control block and flags word. */
1470 if (data_block == NULL)
1471 *((uschar **)(ol->value)) = sptr;
1473 *((uschar **)((uschar *)data_block + (long int)(ol->value))) = sptr;
1475 if (type == opt_rewrite)
1480 rewrite_rule **chain;
1483 sprintf(CS name2, "*%.50s_rules", name);
1484 ol2 = find_option(name2, oltop, last);
1485 sprintf(CS name2, "*%.50s_flags", name);
1486 ol3 = find_option(name2, oltop, last);
1488 if (ol2 == NULL || ol3 == NULL)
1489 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1490 "rewrite rules not available for driver");
1492 if (data_block == NULL)
1494 chain = (rewrite_rule **)(ol2->value);
1495 flagptr = (int *)(ol3->value);
1499 chain = (rewrite_rule **)((uschar *)data_block + (long int)(ol2->value));
1500 flagptr = (int *)((uschar *)data_block + (long int)(ol3->value));
1503 while ((p = string_nextinlist(&sptr, &sep, big_buffer, BIG_BUFFER_SIZE))
1506 rewrite_rule *next = readconf_one_rewrite(p, flagptr, FALSE);
1508 chain = &(next->next);
1511 if ((*flagptr & (rewrite_all_envelope | rewrite_smtp)) != 0)
1512 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "rewrite rule specifies a "
1513 "non-header rewrite - not allowed at transport time -");
1517 /* If it was an expanded uid, see if there is any expansion to be
1518 done by checking for the presence of a $ character. If there is, save it
1519 in the corresponding *expand_user option field. Otherwise, fall through
1520 to treat it as a fixed uid. Ensure mutual exclusivity of the two kinds
1523 case opt_expand_uid:
1524 sprintf(CS name2, "*expand_%.50s", name);
1525 ol2 = find_option(name2, oltop, last);
1528 uschar *ss = (Ustrchr(sptr, '$') != NULL)? sptr : NULL;
1530 if (data_block == NULL)
1531 *((uschar **)(ol2->value)) = ss;
1533 *((uschar **)((uschar *)data_block + (long int)(ol2->value))) = ss;
1537 *(get_set_flag(name, oltop, last, data_block)) = FALSE;
1543 /* Look up a fixed uid, and also make use of the corresponding gid
1544 if a passwd entry is returned and the gid has not been set. */
1547 if (!route_finduser(sptr, &pw, &uid))
1548 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "user %s was not found", sptr);
1549 if (data_block == NULL)
1550 *((uid_t *)(ol->value)) = uid;
1552 *((uid_t *)((uschar *)data_block + (long int)(ol->value))) = uid;
1554 /* Set the flag indicating a fixed value is set */
1556 *(get_set_flag(name, oltop, last, data_block)) = TRUE;
1558 /* Handle matching gid if we have a passwd entry: done by finding the
1559 same name with terminating "user" changed to "group"; if not found,
1560 ignore. Also ignore if the value is already set. */
1562 if (pw == NULL) break;
1563 Ustrcpy(name+Ustrlen(name)-4, "group");
1564 ol2 = find_option(name, oltop, last);
1565 if (ol2 != NULL && ((ol2->type & opt_mask) == opt_gid ||
1566 (ol2->type & opt_mask) == opt_expand_gid))
1568 BOOL *set_flag = get_set_flag(name, oltop, last, data_block);
1571 if (data_block == NULL)
1572 *((gid_t *)(ol2->value)) = pw->pw_gid;
1574 *((gid_t *)((uschar *)data_block + (long int)(ol2->value))) = pw->pw_gid;
1580 /* If it was an expanded gid, see if there is any expansion to be
1581 done by checking for the presence of a $ character. If there is, save it
1582 in the corresponding *expand_user option field. Otherwise, fall through
1583 to treat it as a fixed gid. Ensure mutual exclusivity of the two kinds
1586 case opt_expand_gid:
1587 sprintf(CS name2, "*expand_%.50s", name);
1588 ol2 = find_option(name2, oltop, last);
1591 uschar *ss = (Ustrchr(sptr, '$') != NULL)? sptr : NULL;
1593 if (data_block == NULL)
1594 *((uschar **)(ol2->value)) = ss;
1596 *((uschar **)((uschar *)data_block + (long int)(ol2->value))) = ss;
1600 *(get_set_flag(name, oltop, last, data_block)) = FALSE;
1606 /* Handle freestanding gid */
1609 if (!route_findgroup(sptr, &gid))
1610 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "group %s was not found", sptr);
1611 if (data_block == NULL)
1612 *((gid_t *)(ol->value)) = gid;
1614 *((gid_t *)((uschar *)data_block + (long int)(ol->value))) = gid;
1615 *(get_set_flag(name, oltop, last, data_block)) = TRUE;
1618 /* If it was a uid list, look up each individual entry, and build
1619 a vector of uids, with a count in the first element. Put the vector
1620 in malloc store so we can free the string. (We are reading into
1621 permanent store already.) */
1629 uschar *op = expand_string (sptr);
1632 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "failed to expand %s: %s",
1633 name, expand_string_message);
1636 if (*p != 0) count++;
1637 while (*p != 0) if (*p++ == ':' && *p != 0) count++;
1638 list = store_malloc(count*sizeof(uid_t));
1639 list[ptr++] = (uid_t)(count - 1);
1641 if (data_block == NULL)
1642 *((uid_t **)(ol->value)) = list;
1644 *((uid_t **)((uschar *)data_block + (long int)(ol->value))) = list;
1650 (void)string_nextinlist(&p, &sep, big_buffer, BIG_BUFFER_SIZE);
1651 if (!route_finduser(big_buffer, NULL, &uid))
1652 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "user %s was not found",
1659 /* If it was a gid list, look up each individual entry, and build
1660 a vector of gids, with a count in the first element. Put the vector
1661 in malloc store so we can free the string. (We are reading into permanent
1670 uschar *op = expand_string (sptr);
1673 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "failed to expand %s: %s",
1674 name, expand_string_message);
1677 if (*p != 0) count++;
1678 while (*p != 0) if (*p++ == ':' && *p != 0) count++;
1679 list = store_malloc(count*sizeof(gid_t));
1680 list[ptr++] = (gid_t)(count - 1);
1682 if (data_block == NULL)
1683 *((gid_t **)(ol->value)) = list;
1685 *((gid_t **)((uschar *)data_block + (long int)(ol->value))) = list;
1691 (void)string_nextinlist(&p, &sep, big_buffer, BIG_BUFFER_SIZE);
1692 if (!route_findgroup(big_buffer, &gid))
1693 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "group %s was not found",
1701 /* Release store if the value of the string doesn't need to be kept. */
1703 if (freesptr) store_reset(reset_point);
1706 /* Expanded boolean: if no characters follow, or if there are no dollar
1707 characters, this is a fixed-valued boolean, and we fall through. Otherwise,
1708 save the string for later expansion in the alternate place. */
1710 case opt_expand_bool:
1711 if (*s != 0 && Ustrchr(s, '$') != 0)
1713 sprintf(CS name2, "*expand_%.50s", name);
1714 ol2 = find_option(name2, oltop, last);
1717 reset_point = sptr = read_string(s, name);
1718 if (data_block == NULL)
1719 *((uschar **)(ol2->value)) = sptr;
1721 *((uschar **)((uschar *)data_block + (long int)(ol2->value))) = sptr;
1728 /* Boolean: if no characters follow, the value is boolvalue. Otherwise
1729 look for yes/not/true/false. Some booleans are stored in a single bit in
1730 a single int. There's a special fudge for verify settings; without a suffix
1731 they set both xx_sender and xx_recipient. The table points to the sender
1732 value; search subsequently for the recipient. There's another special case:
1733 opt_bool_set also notes when a boolean has been set. */
1737 case opt_bool_verify:
1741 s = readconf_readname(name2, 64, s);
1742 if (strcmpic(name2, US"true") == 0 || strcmpic(name2, US"yes") == 0)
1744 else if (strcmpic(name2, US"false") == 0 || strcmpic(name2, US"no") == 0)
1746 else log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1747 "\"%s\" is not a valid value for the \"%s\" option", name2, name);
1748 if (*s != 0) extra_chars_error(s, string_sprintf("\"%s\" ", name2),
1749 US"for boolean option ", name);
1752 /* Handle single-bit type. */
1754 if (type == opt_bit)
1756 int bit = 1 << ((ol->type >> 16) & 31);
1757 int *ptr = (data_block == NULL)?
1758 (int *)(ol->value) :
1759 (int *)((uschar *)data_block + (long int)ol->value);
1760 if (boolvalue) *ptr |= bit; else *ptr &= ~bit;
1764 /* Handle full BOOL types */
1766 if (data_block == NULL)
1767 *((BOOL *)(ol->value)) = boolvalue;
1769 *((BOOL *)((uschar *)data_block + (long int)(ol->value))) = boolvalue;
1773 if (type == opt_bool_verify)
1775 sprintf(CS name2, "%.50s_recipient", name + offset);
1776 ol2 = find_option(name2, oltop, last);
1779 if (data_block == NULL)
1780 *((BOOL *)(ol2->value)) = boolvalue;
1782 *((BOOL *)((uschar *)data_block + (long int)(ol2->value))) = boolvalue;
1786 /* Note that opt_bool_set type is set, if there is somewhere to do so */
1788 else if (type == opt_bool_set)
1790 sprintf(CS name2, "*set_%.50s", name + offset);
1791 ol2 = find_option(name2, oltop, last);
1794 if (data_block == NULL)
1795 *((BOOL *)(ol2->value)) = TRUE;
1797 *((BOOL *)((uschar *)data_block + (long int)(ol2->value))) = TRUE;
1806 inttype = US"octal ";
1808 /* Integer: a simple(ish) case; allow octal and hex formats, and
1809 suffixes K and M. The different types affect output, not input. */
1816 value = strtol(CS s, CSS &endptr, intbase);
1819 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "%sinteger expected for %s",
1822 if (errno != ERANGE)
1824 if (tolower(*endptr) == 'k')
1826 if (value > INT_MAX/1024 || value < INT_MIN/1024) errno = ERANGE;
1830 else if (tolower(*endptr) == 'm')
1832 if (value > INT_MAX/(1024*1024) || value < INT_MIN/(1024*1024))
1834 else value *= 1024*1024;
1839 if (errno == ERANGE) log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1840 "absolute value of integer \"%s\" is too large (overflow)", s);
1842 while (isspace(*endptr)) endptr++;
1844 extra_chars_error(endptr, inttype, US"integer value for ", name);
1847 if (data_block == NULL)
1848 *((int *)(ol->value)) = value;
1850 *((int *)((uschar *)data_block + (long int)(ol->value))) = value;
1853 /* Integer held in K: again, allow octal and hex formats, and suffixes K and
1860 value = strtol(CS s, CSS &endptr, intbase);
1863 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "%sinteger expected for %s",
1866 if (errno != ERANGE)
1868 if (tolower(*endptr) == 'm')
1870 if (value > INT_MAX/1024 || value < INT_MIN/1024) errno = ERANGE;
1874 else if (tolower(*endptr) == 'k')
1880 value = (value + 512)/1024;
1884 if (errno == ERANGE) log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1885 "absolute value of integer \"%s\" is too large (overflow)", s);
1887 while (isspace(*endptr)) endptr++;
1889 extra_chars_error(endptr, inttype, US"integer value for ", name);
1892 if (data_block == NULL)
1893 *((int *)(ol->value)) = value;
1895 *((int *)((uschar *)data_block + (long int)(ol->value))) = value;
1898 /* Fixed-point number: held to 3 decimal places. */
1901 if (sscanf(CS s, "%d%n", &value, &count) != 1)
1902 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1903 "fixed-point number expected for %s", name);
1905 if (value < 0) log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1906 "integer \"%s\" is too large (overflow)", s);
1910 if (value < 0) log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1911 "integer \"%s\" is too large (overflow)", s);
1913 if (s[count] == '.')
1916 while (isdigit(s[++count]))
1918 value += (s[count] - '0') * d;
1923 while (isspace(s[count])) count++;
1926 extra_chars_error(s+count, US"fixed-point value for ", name, US"");
1928 if (data_block == NULL)
1929 *((int *)(ol->value)) = value;
1931 *((int *)((uschar *)data_block + (long int)(ol->value))) = value;
1934 /* There's a special routine to read time values. */
1937 value = readconf_readtime(s, 0, FALSE);
1939 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "invalid time value for %s",
1941 if (data_block == NULL)
1942 *((int *)(ol->value)) = value;
1944 *((int *)((uschar *)data_block + (long int)(ol->value))) = value;
1947 /* A time list is a list of colon-separated times, with the first
1948 element holding the size of the list and the second the number of
1954 int *list = (data_block == NULL)?
1955 (int *)(ol->value) :
1956 (int *)((uschar *)data_block + (long int)(ol->value));
1958 if (*s != 0) for (count = 1; count <= list[0] - 2; count++)
1961 uschar *snext = Ustrchr(s, ':');
1965 while (ss > s && isspace(ss[-1])) ss--;
1968 value = readconf_readtime(s, terminator, FALSE);
1970 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "invalid time value for %s",
1972 if (count > 1 && value <= list[count])
1973 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1974 "time value out of order for %s", name);
1975 list[count+1] = value;
1976 if (snext == NULL) break;
1978 while (isspace(*s)) s++;
1981 if (count > list[0] - 2)
1982 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "too many time values for %s",
1984 if (count > 0 && list[2] == 0) count = 0;
1996 /*************************************************
1997 * Print a time value *
1998 *************************************************/
2001 Argument: a time value in seconds
2002 Returns: pointer to a fixed buffer containing the time as a string,
2003 in readconf_readtime() format
2007 readconf_printtime(int t)
2010 uschar *p = time_buffer;
2021 if (w > 0) { sprintf(CS p, "%dw", w); while (*p) p++; }
2022 if (d > 0) { sprintf(CS p, "%dd", d); while (*p) p++; }
2023 if (h > 0) { sprintf(CS p, "%dh", h); while (*p) p++; }
2024 if (m > 0) { sprintf(CS p, "%dm", m); while (*p) p++; }
2025 if (s > 0 || p == time_buffer) sprintf(CS p, "%ds", s);
2032 /*************************************************
2033 * Print an individual option value *
2034 *************************************************/
2036 /* This is used by the -bP option, so prints to the standard output.
2037 The entire options list is passed in as an argument, because some options come
2038 in pairs - typically uid/gid settings, which can either be explicit numerical
2039 values, or strings to be expanded later. If the numerical value is unset,
2040 search for "*expand_<name>" to see if there is a string equivalent.
2043 ol option entry, or NULL for an unknown option
2045 options_block NULL for main configuration options; otherwise points to
2046 a driver block; if the option doesn't have opt_public
2047 set, then options_block->options_block is where the item
2049 oltop points to the option list in which ol exists
2050 last one more than the offset of the last entry in optop
2056 print_ol(optionlist *ol, uschar *name, void *options_block,
2057 optionlist *oltop, int last)
2070 printf("%s is not a known option\n", name);
2074 /* Non-admin callers cannot see options that have been flagged secure by the
2077 if (!admin_user && (ol->type & opt_secure) != 0)
2079 printf("%s = <value not displayable>\n", name);
2083 /* Else show the value of the option */
2086 if (options_block != NULL)
2088 if ((ol->type & opt_public) == 0)
2089 options_block = (void *)(((driver_instance *)options_block)->options_block);
2090 value = (void *)((uschar *)options_block + (long int)value);
2093 switch(ol->type & opt_mask)
2096 case opt_rewrite: /* Show the text value */
2097 s = *((uschar **)value);
2098 printf("%s = %s\n", name, (s == NULL)? US"" : string_printing2(s, FALSE));
2102 printf("%s = %d\n", name, *((int *)value));
2107 int x = *((int *)value);
2108 if (x != 0 && (x & 1023) == 0)
2112 if ((x & 1023) == 0)
2117 printf("%s = %d%c\n", name, x, c);
2119 else printf("%s = %d\n", name, x);
2125 int x = *((int *)value);
2126 if (x == 0) printf("%s = 0\n", name);
2127 else if ((x & 1023) == 0) printf("%s = %dM\n", name, x >> 10);
2128 else printf("%s = %dK\n", name, x);
2133 printf("%s = %#o\n", name, *((int *)value));
2136 /* Can be negative only when "unset", in which case integer */
2140 int x = *((int *)value);
2143 if (x < 0) printf("%s =\n", name); else
2145 printf("%s = %d.", name, x/1000);
2158 /* If the numerical value is unset, try for the string value */
2160 case opt_expand_uid:
2161 if (! *get_set_flag(name, oltop, last, options_block))
2163 sprintf(CS name2, "*expand_%.50s", name);
2164 ol2 = find_option(name2, oltop, last);
2167 void *value2 = ol2->value;
2168 if (options_block != NULL)
2169 value2 = (void *)((uschar *)options_block + (long int)value2);
2170 s = *((uschar **)value2);
2171 printf("%s = %s\n", name, (s == NULL)? US"" : string_printing(s));
2176 /* Else fall through */
2179 if (! *get_set_flag(name, oltop, last, options_block))
2180 printf("%s =\n", name);
2183 pw = getpwuid(*((uid_t *)value));
2185 printf("%s = %ld\n", name, (long int)(*((uid_t *)value)));
2186 else printf("%s = %s\n", name, pw->pw_name);
2190 /* If the numerical value is unset, try for the string value */
2192 case opt_expand_gid:
2193 if (! *get_set_flag(name, oltop, last, options_block))
2195 sprintf(CS name2, "*expand_%.50s", name);
2196 ol2 = find_option(name2, oltop, last);
2197 if (ol2 != NULL && (ol2->type & opt_mask) == opt_stringptr)
2199 void *value2 = ol2->value;
2200 if (options_block != NULL)
2201 value2 = (void *)((uschar *)options_block + (long int)value2);
2202 s = *((uschar **)value2);
2203 printf("%s = %s\n", name, (s == NULL)? US"" : string_printing(s));
2208 /* Else fall through */
2211 if (! *get_set_flag(name, oltop, last, options_block))
2212 printf("%s =\n", name);
2215 gr = getgrgid(*((int *)value));
2217 printf("%s = %ld\n", name, (long int)(*((int *)value)));
2218 else printf("%s = %s\n", name, gr->gr_name);
2223 uidlist = *((uid_t **)value);
2224 printf("%s =", name);
2225 if (uidlist != NULL)
2229 for (i = 1; i <= (int)(uidlist[0]); i++)
2231 uschar *name = NULL;
2232 pw = getpwuid(uidlist[i]);
2233 if (pw != NULL) name = US pw->pw_name;
2234 if (name != NULL) printf("%c%s", sep, name);
2235 else printf("%c%ld", sep, (long int)(uidlist[i]));
2243 gidlist = *((gid_t **)value);
2244 printf("%s =", name);
2245 if (gidlist != NULL)
2249 for (i = 1; i <= (int)(gidlist[0]); i++)
2251 uschar *name = NULL;
2252 gr = getgrgid(gidlist[i]);
2253 if (gr != NULL) name = US gr->gr_name;
2254 if (name != NULL) printf("%c%s", sep, name);
2255 else printf("%c%ld", sep, (long int)(gidlist[i]));
2263 printf("%s = %s\n", name, readconf_printtime(*((int *)value)));
2269 int *list = (int *)value;
2270 printf("%s = ", name);
2271 for (i = 0; i < list[1]; i++)
2272 printf("%s%s", (i == 0)? "" : ":", readconf_printtime(list[i+2]));
2278 printf("%s%s\n", ((*((int *)value)) & (1 << ((ol->type >> 16) & 31)))?
2282 case opt_expand_bool:
2283 sprintf(CS name2, "*expand_%.50s", name);
2284 ol2 = find_option(name2, oltop, last);
2285 if (ol2 != NULL && ol2->value != NULL)
2287 void *value2 = ol2->value;
2288 if (options_block != NULL)
2289 value2 = (void *)((uschar *)options_block + (long int)value2);
2290 s = *((uschar **)value2);
2293 printf("%s = %s\n", name, string_printing(s));
2296 /* s == NULL => string not set; fall through */
2302 case opt_bool_verify:
2304 printf("%s%s\n", (*((BOOL *)value))? "" : "no_", name);
2311 /*************************************************
2312 * Print value from main configuration *
2313 *************************************************/
2315 /* This function, called as a result of encountering the -bP option,
2316 causes the value of any main configuration variable to be output if the
2317 second argument is NULL. There are some special values:
2319 all print all main configuration options
2320 configure_file print the name of the configuration file
2321 routers print the routers' configurations
2322 transports print the transports' configuration
2323 authenticators print the authenticators' configuration
2324 router_list print a list of router names
2325 transport_list print a list of transport names
2326 authenticator_list print a list of authentication mechanism names
2327 +name print a named list item
2328 local_scan print the local_scan options
2330 If the second argument is not NULL, it must be one of "router", "transport", or
2331 "authenticator" in which case the first argument identifies the driver whose
2332 options are to be printed.
2335 name option name if type == NULL; else driver name
2336 type NULL or driver type name, as described above
2342 readconf_print(uschar *name, uschar *type)
2344 BOOL names_only = FALSE;
2346 optionlist *ol2 = NULL;
2347 driver_instance *d = NULL;
2357 static uschar *types[] = { US"address", US"domain", US"host",
2359 static tree_node **anchors[] = { &addresslist_anchor, &domainlist_anchor,
2360 &hostlist_anchor, &localpartlist_anchor };
2362 for (i = 0; i < 4; i++)
2364 t = tree_search(*(anchors[i]), name+1);
2368 printf("%slist %s = %s\n", types[i], name+1,
2369 ((namedlist_block *)(t->data.ptr))->string);
2374 printf("no address, domain, host, or local part list called \"%s\" "
2375 "exists\n", name+1);
2380 if (Ustrcmp(name, "configure_file") == 0)
2382 printf("%s\n", CS config_main_filename);
2386 if (Ustrcmp(name, "all") == 0)
2388 for (ol = optionlist_config;
2389 ol < optionlist_config + optionlist_config_size; ol++)
2391 if ((ol->type & opt_hidden) == 0)
2392 print_ol(ol, US ol->name, NULL, optionlist_config, optionlist_config_size);
2397 if (Ustrcmp(name, "local_scan") == 0)
2399 #ifndef LOCAL_SCAN_HAS_OPTIONS
2400 printf("local_scan() options are not supported\n");
2402 for (ol = local_scan_options;
2403 ol < local_scan_options + local_scan_options_count; ol++)
2405 print_ol(ol, US ol->name, NULL, local_scan_options,
2406 local_scan_options_count);
2412 if (Ustrcmp(name, "routers") == 0)
2417 else if (Ustrcmp(name, "transports") == 0)
2419 type = US"transport";
2423 else if (Ustrcmp(name, "authenticators") == 0)
2425 type = US"authenticator";
2429 else if (Ustrcmp(name, "authenticator_list") == 0)
2431 type = US"authenticator";
2436 else if (Ustrcmp(name, "router_list") == 0)
2442 else if (Ustrcmp(name, "transport_list") == 0)
2444 type = US"transport";
2450 print_ol(find_option(name, optionlist_config, optionlist_config_size),
2451 name, NULL, optionlist_config, optionlist_config_size);
2456 /* Handle the options for a router or transport. Skip options that are flagged
2457 as hidden. Some of these are options with names starting with '*', used for
2458 internal alternative representations of other options (which the printing
2459 function will sort out). Others are synonyms kept for backward compatibility.
2462 if (Ustrcmp(type, "router") == 0)
2464 d = (driver_instance *)routers;
2465 ol2 = optionlist_routers;
2466 size = optionlist_routers_size;
2468 else if (Ustrcmp(type, "transport") == 0)
2470 d = (driver_instance *)transports;
2471 ol2 = optionlist_transports;
2472 size = optionlist_transports_size;
2474 else if (Ustrcmp(type, "authenticator") == 0)
2476 d = (driver_instance *)auths;
2477 ol2 = optionlist_auths;
2478 size = optionlist_auths_size;
2483 for (; d != NULL; d = d->next) printf("%s\n", CS d->name);
2487 /* Either search for a given driver, or print all of them */
2489 for (; d != NULL; d = d->next)
2492 printf("\n%s %s:\n", d->name, type);
2493 else if (Ustrcmp(d->name, name) != 0) continue;
2495 for (ol = ol2; ol < ol2 + size; ol++)
2497 if ((ol->type & opt_hidden) == 0)
2498 print_ol(ol, US ol->name, d, ol2, size);
2501 for (ol = d->info->options;
2502 ol < d->info->options + *(d->info->options_count); ol++)
2504 if ((ol->type & opt_hidden) == 0)
2505 print_ol(ol, US ol->name, d, d->info->options, *(d->info->options_count));
2507 if (name != NULL) return;
2509 if (name != NULL) printf("%s %s not found\n", type, name);
2514 /*************************************************
2515 * Read a named list item *
2516 *************************************************/
2518 /* This function reads a name and a list (i.e. string). The name is used to
2519 save the list in a tree, sorted by its name. Each entry also has a number,
2520 which can be used for caching tests, but if the string contains any expansion
2521 items other than $key, the number is set negative to inhibit caching. This
2522 mechanism is used for domain, host, and address lists that are referenced by
2526 anchorp points to the tree anchor
2527 numberp points to the current number for this tree
2528 max the maximum number permitted
2529 s the text of the option line, starting immediately after the name
2531 tname the name of the list type, for messages
2537 read_named_list(tree_node **anchorp, int *numberp, int max, uschar *s,
2540 BOOL forcecache = FALSE;
2543 namedlist_block *nb = store_get(sizeof(namedlist_block));
2545 if (Ustrncmp(s, "_cache", 6) == 0)
2552 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "unrecognized configuration line");
2554 if (*numberp >= max)
2555 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "too many named %ss (max is %d)\n",
2558 while (isspace(*s)) s++;
2560 while (isalnum(*s) || *s == '_') s++;
2561 t = store_get(sizeof(tree_node) + s-ss);
2562 Ustrncpy(t->name, ss, s-ss);
2564 while (isspace(*s)) s++;
2566 if (!tree_insertnode(anchorp, t))
2567 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
2568 "duplicate name \"%s\" for a named %s", t->name, tname);
2571 nb->number = *numberp;
2574 if (*s++ != '=') log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
2575 "missing '=' after \"%s\"", t->name);
2576 while (isspace(*s)) s++;
2577 nb->string = read_string(s, t->name);
2578 nb->cache_data = NULL;
2580 /* Check the string for any expansions; if any are found, mark this list
2581 uncacheable unless the user has explicited forced caching. */
2583 if (!forcecache && Ustrchr(nb->string, '$') != NULL) nb->number = -1;
2589 /*************************************************
2590 * Unpick data for a rate limit *
2591 *************************************************/
2593 /* This function is called to unpick smtp_ratelimit_{mail,rcpt} into four
2597 s string, in the form t,b,f,l
2598 where t is the threshold (integer)
2599 b is the initial delay (time)
2600 f is the multiplicative factor (fixed point)
2601 k is the maximum time (time)
2602 threshold where to store threshold
2603 base where to store base in milliseconds
2604 factor where to store factor in milliseconds
2605 limit where to store limit
2607 Returns: nothing (panics on error)
2611 unpick_ratelimit(uschar *s, int *threshold, int *base, double *factor,
2614 uschar bstring[16], lstring[16];
2616 if (sscanf(CS s, "%d, %15[0123456789smhdw.], %lf, %15s", threshold, bstring,
2617 factor, lstring) == 4)
2619 *base = readconf_readtime(bstring, 0, TRUE);
2620 *limit = readconf_readtime(lstring, 0, TRUE);
2621 if (*base >= 0 && *limit >= 0) return;
2623 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "malformed ratelimit data: %s", s);
2629 /*************************************************
2630 * Read main configuration options *
2631 *************************************************/
2633 /* This function is the first to be called for configuration reading. It
2634 opens the configuration file and reads general configuration settings until
2635 it reaches the end of the configuration section. The file is then left open so
2636 that the remaining configuration data can subsequently be read if needed for
2639 The configuration file must be owned either by root or exim, and be writeable
2640 only by root or uid/gid exim. The values for Exim's uid and gid can be changed
2641 in the config file, so the test is done on the compiled in values. A slight
2642 anomaly, to be carefully documented.
2644 The name of the configuration file is taken from a list that is included in the
2645 binary of Exim. It can be altered from the command line, but if that is done,
2646 root privilege is immediately withdrawn unless the caller is root or exim.
2647 The first file on the list that exists is used.
2649 For use on multiple systems that share file systems, first look for a
2650 configuration file whose name has the current node name on the end. If that is
2651 not found, try the generic name. For really contorted configurations, that run
2652 multiple Exims with different uid settings, first try adding the effective uid
2653 before the node name. These complications are going to waste resources on most
2654 systems. Therefore they are available only when requested by compile-time
2661 struct stat statbuf;
2662 uschar *s, *filename;
2663 uschar *list = config_main_filelist;
2665 /* Loop through the possible file names */
2667 while((filename = string_nextinlist(&list, &sep, big_buffer, big_buffer_size))
2670 /* Cut out all the fancy processing unless specifically wanted */
2672 #if defined(CONFIGURE_FILE_USE_NODE) || defined(CONFIGURE_FILE_USE_EUID)
2673 uschar *suffix = filename + Ustrlen(filename);
2675 /* Try for the node-specific file if a node name exists */
2677 #ifdef CONFIGURE_FILE_USE_NODE
2679 if (uname(&uts) >= 0)
2681 #ifdef CONFIGURE_FILE_USE_EUID
2682 sprintf(CS suffix, ".%ld.%.256s", (long int)original_euid, uts.nodename);
2683 config_file = Ufopen(filename, "rb");
2684 if (config_file == NULL)
2685 #endif /* CONFIGURE_FILE_USE_EUID */
2687 sprintf(CS suffix, ".%.256s", uts.nodename);
2688 config_file = Ufopen(filename, "rb");
2691 #endif /* CONFIGURE_FILE_USE_NODE */
2693 /* Otherwise, try the generic name, possibly with the euid added */
2695 #ifdef CONFIGURE_FILE_USE_EUID
2696 if (config_file == NULL)
2698 sprintf(CS suffix, ".%ld", (long int)original_euid);
2699 config_file = Ufopen(filename, "rb");
2701 #endif /* CONFIGURE_FILE_USE_EUID */
2703 /* Finally, try the unadorned name */
2705 if (config_file == NULL)
2708 config_file = Ufopen(filename, "rb");
2710 #else /* if neither defined */
2712 /* This is the common case when the fancy processing is not included. */
2714 config_file = Ufopen(filename, "rb");
2717 /* If the file does not exist, continue to try any others. For any other
2718 error, break out (and die). */
2720 if (config_file != NULL || errno != ENOENT) break;
2723 /* On success, save the name for verification; config_filename is used when
2724 logging configuration errors (it changes for .included files) whereas
2725 config_main_filename is the name shown by -bP. Failure to open a configuration
2726 file is a serious disaster. */
2728 if (config_file != NULL)
2730 config_filename = config_main_filename = string_copy(filename);
2734 if (filename == NULL)
2735 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "non-existent configuration file(s): "
2736 "%s", config_main_filelist);
2738 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "%s", string_open_failed(errno,
2739 "configuration file %s", filename));
2742 /* Check the status of the file we have opened, unless it was specified on
2743 the command line, in which case privilege was given away at the start. */
2745 if (!config_changed)
2747 if (fstat(fileno(config_file), &statbuf) != 0)
2748 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "failed to stat configuration file %s",
2751 if ((statbuf.st_uid != root_uid && /* owner not root */
2752 statbuf.st_uid != exim_uid /* owner not exim */
2753 #ifdef CONFIGURE_OWNER
2754 && statbuf.st_uid != config_uid /* owner not the special one */
2757 (statbuf.st_gid != exim_gid /* group not exim & */
2758 #ifdef CONFIGURE_GROUP
2759 && statbuf.st_gid != config_gid /* group not the special one */
2761 && (statbuf.st_mode & 020) != 0) || /* group writeable */
2763 ((statbuf.st_mode & 2) != 0)) /* world writeable */
2765 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "Exim configuration file %s has the "
2766 "wrong owner, group, or mode", big_buffer);
2769 /* Process the main configuration settings. They all begin with a lower case
2770 letter. If we see something starting with an upper case letter, it is taken as
2771 a macro definition. */
2773 while ((s = get_config_line()) != NULL)
2775 if (isupper(s[0])) read_macro_assignment(s);
2777 else if (Ustrncmp(s, "domainlist", 10) == 0)
2778 read_named_list(&domainlist_anchor, &domainlist_count,
2779 MAX_NAMED_LIST, s+10, US"domain list");
2781 else if (Ustrncmp(s, "hostlist", 8) == 0)
2782 read_named_list(&hostlist_anchor, &hostlist_count,
2783 MAX_NAMED_LIST, s+8, US"host list");
2785 else if (Ustrncmp(s, US"addresslist", 11) == 0)
2786 read_named_list(&addresslist_anchor, &addresslist_count,
2787 MAX_NAMED_LIST, s+11, US"address list");
2789 else if (Ustrncmp(s, US"localpartlist", 13) == 0)
2790 read_named_list(&localpartlist_anchor, &localpartlist_count,
2791 MAX_NAMED_LIST, s+13, US"local part list");
2794 (void) readconf_handle_option(s, optionlist_config, optionlist_config_size,
2795 NULL, US"main option \"%s\" unknown");
2799 /* If local_sender_retain is set, local_from_check must be unset. */
2801 if (local_sender_retain && local_from_check)
2802 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "both local_from_check and "
2803 "local_sender_retain are set; this combination is not allowed");
2805 /* If the timezone string is empty, set it to NULL, implying no TZ variable
2808 if (timezone_string != NULL && *timezone_string == 0) timezone_string = NULL;
2810 /* remote_max_parallel must be > 0 */
2812 if (remote_max_parallel <= 0) remote_max_parallel = 1;
2814 /* The primary host name may be required for expansion of spool_directory
2815 and log_file_path, so make sure it is set asap. It is obtained from uname(),
2816 but if that yields an unqualified value, make a FQDN by using gethostbyname to
2817 canonize it. Some people like upper case letters in their host names, so we
2818 don't force the case. */
2820 if (primary_hostname == NULL)
2824 if (uname(&uts) < 0)
2825 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "uname() failed to yield host name");
2826 hostname = US uts.nodename;
2828 if (Ustrchr(hostname, '.') == NULL)
2831 struct hostent *hostdata;
2834 if (dns_ipv4_lookup == NULL ||
2835 match_isinlist(hostname, &dns_ipv4_lookup, 0, NULL, NULL, MCL_DOMAIN,
2845 #if HAVE_GETIPNODEBYNAME
2847 hostdata = getipnodebyname(CS hostname, af, 0, &error_num);
2849 hostdata = gethostbyname2(CS hostname, af);
2852 hostdata = gethostbyname(CS hostname);
2855 if (hostdata != NULL)
2857 hostname = US hostdata->h_name;
2861 if (af == AF_INET) break;
2866 primary_hostname = string_copy(hostname);
2869 /* Set up default value for smtp_active_hostname */
2871 smtp_active_hostname = primary_hostname;
2873 /* If spool_directory wasn't set in the build-time configuration, it must have
2874 got set above. Of course, writing to the log may not work if log_file_path is
2875 not set, but it will at least get to syslog or somewhere, with any luck. */
2877 if (*spool_directory == 0)
2878 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "spool_directory undefined: cannot "
2881 /* Expand the spool directory name; it may, for example, contain the primary
2882 host name. Same comment about failure. */
2884 s = expand_string(spool_directory);
2886 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "failed to expand spool_directory "
2887 "\"%s\": %s", spool_directory, expand_string_message);
2888 spool_directory = s;
2890 /* Expand log_file_path, which must contain "%s" in any component that isn't
2891 the null string or "syslog". It is also allowed to contain one instance of %D.
2892 However, it must NOT contain % followed by anything else. */
2894 if (*log_file_path != 0)
2897 int sep = ':'; /* Fixed for log file path */
2898 s = expand_string(log_file_path);
2900 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "failed to expand log_file_path "
2901 "\"%s\": %s", log_file_path, expand_string_message);
2904 while ((sss = string_nextinlist(&ss,&sep,big_buffer,big_buffer_size)) != NULL)
2907 if (sss[0] == 0 || Ustrcmp(sss, "syslog") == 0) continue;
2908 t = Ustrstr(sss, "%s");
2910 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "log_file_path \"%s\" does not "
2911 "contain \"%%s\"", sss);
2913 t = Ustrchr(sss, '%');
2916 if (t[1] != 'D' || Ustrchr(t+2, '%') != NULL)
2917 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "log_file_path \"%s\" contains "
2918 "unexpected \"%%\" character", s);
2925 /* Interpret syslog_facility into an integer argument for 'ident' param to
2926 openlog(). Default is LOG_MAIL set in globals.c. Allow the user to omit the
2929 if (syslog_facility_str != NULL)
2932 uschar *s = syslog_facility_str;
2934 if ((Ustrlen(syslog_facility_str) >= 4) &&
2935 (strncmpic(syslog_facility_str, US"log_", 4) == 0))
2938 for (i = 0; i < syslog_list_size; i++)
2940 if (strcmpic(s, syslog_list[i].name) == 0)
2942 syslog_facility = syslog_list[i].value;
2947 if (i >= syslog_list_size)
2949 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
2950 "failed to interpret syslog_facility \"%s\"", syslog_facility_str);
2954 /* Expand pid_file_path */
2956 if (*pid_file_path != 0)
2958 s = expand_string(pid_file_path);
2960 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "failed to expand pid_file_path "
2961 "\"%s\": %s", pid_file_path, expand_string_message);
2965 /* Compile the regex for matching a UUCP-style "From_" line in an incoming
2968 regex_From = regex_must_compile(uucp_from_pattern, FALSE, TRUE);
2970 /* Unpick the SMTP rate limiting options, if set */
2972 if (smtp_ratelimit_mail != NULL)
2974 unpick_ratelimit(smtp_ratelimit_mail, &smtp_rlm_threshold,
2975 &smtp_rlm_base, &smtp_rlm_factor, &smtp_rlm_limit);
2978 if (smtp_ratelimit_rcpt != NULL)
2980 unpick_ratelimit(smtp_ratelimit_rcpt, &smtp_rlr_threshold,
2981 &smtp_rlr_base, &smtp_rlr_factor, &smtp_rlr_limit);
2984 /* The qualify domains default to the primary host name */
2986 if (qualify_domain_sender == NULL)
2987 qualify_domain_sender = primary_hostname;
2988 if (qualify_domain_recipient == NULL)
2989 qualify_domain_recipient = qualify_domain_sender;
2991 /* Setting system_filter_user in the configuration sets the gid as well if a
2992 name is given, but a numerical value does not. */
2994 if (system_filter_uid_set && !system_filter_gid_set)
2996 struct passwd *pw = getpwuid(system_filter_uid);
2998 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "Failed to look up uid %ld",
2999 (long int)system_filter_uid);
3000 system_filter_gid = pw->pw_gid;
3001 system_filter_gid_set = TRUE;
3004 /* If the errors_reply_to field is set, check that it is syntactically valid
3005 and ensure it contains a domain. */
3007 if (errors_reply_to != NULL)
3010 int start, end, domain;
3011 uschar *recipient = parse_extract_address(errors_reply_to, &errmess,
3012 &start, &end, &domain, FALSE);
3014 if (recipient == NULL)
3015 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
3016 "error in errors_reply_to (%s): %s", errors_reply_to, errmess);
3019 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
3020 "errors_reply_to (%s) does not contain a domain", errors_reply_to);
3023 /* If smtp_accept_queue or smtp_accept_max_per_host is set, then
3024 smtp_accept_max must also be set. */
3026 if (smtp_accept_max == 0 &&
3027 (smtp_accept_queue > 0 || smtp_accept_max_per_host != NULL))
3028 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
3029 "smtp_accept_max must be set if smtp_accept_queue or "
3030 "smtp_accept_max_per_host is set");
3032 /* Set up the host number if anything is specified. It is an expanded string
3033 so that it can be computed from the host name, for example. We do this last
3034 so as to ensure that everything else is set up before the expansion. */
3036 if (host_number_string != NULL)
3039 uschar *s = expand_string(host_number_string);
3040 long int n = Ustrtol(s, &end, 0);
3041 while (isspace(*end)) end++;
3043 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
3044 "localhost_number value is not a number: %s", s);
3045 if (n > LOCALHOST_MAX)
3046 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
3047 "localhost_number is greater than the maximum allowed value (%d)",
3053 /* If tls_verify_hosts is set, tls_verify_certificates must also be set */
3055 if ((tls_verify_hosts != NULL || tls_try_verify_hosts != NULL) &&
3056 tls_verify_certificates == NULL)
3057 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
3058 "tls_%sverify_hosts is set, but tls_verify_certificates is not set",
3059 (tls_verify_hosts != NULL)? "" : "try_");
3065 /*************************************************
3066 * Initialize one driver *
3067 *************************************************/
3069 /* This is called once the driver's generic options, if any, have been read.
3070 We can now find the driver, set up defaults for the private options, and
3071 unset any "set" bits in the private options table (which might have been
3072 set by another incarnation of the same driver).
3075 d pointer to driver instance block, with generic
3077 drivers_available vector of available drivers
3078 size_of_info size of each block in drivers_available
3079 class class of driver, for error message
3081 Returns: pointer to the driver info block
3084 static driver_info *
3085 init_driver(driver_instance *d, driver_info *drivers_available,
3086 int size_of_info, uschar *class)
3090 for (dd = drivers_available; dd->driver_name[0] != 0;
3091 dd = (driver_info *)(((uschar *)dd) + size_of_info))
3093 if (Ustrcmp(d->driver_name, dd->driver_name) == 0)
3096 int len = dd->options_len;
3098 d->options_block = store_get(len);
3099 memcpy(d->options_block, dd->options_block, len);
3100 for (i = 0; i < *(dd->options_count); i++)
3101 dd->options[i].type &= ~opt_set;
3106 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
3107 "%s %s: cannot find %s driver \"%s\"", class, d->name, class, d->driver_name);
3109 return NULL; /* never obeyed */
3115 /*************************************************
3116 * Initialize driver list *
3117 *************************************************/
3119 /* This function is called for routers, transports, and authentication
3120 mechanisms. It reads the data from the current point in the configuration file
3121 up to the end of the section, and sets up a chain of instance blocks according
3122 to the file's contents. The file will already have been opened by a call to
3123 readconf_main, and must be left open for subsequent reading of further data.
3125 Any errors cause a panic crash. Note that the blocks with names driver_info and
3126 driver_instance must map the first portions of all the _info and _instance
3127 blocks for this shared code to work.
3130 class "router", "transport", or "authenticator"
3131 anchor &routers, &transports, &auths
3132 drivers_available available drivers
3133 size_of_info size of each info block
3134 instance_default points to default data for an instance
3135 instance_size size of instance block
3136 driver_optionlist generic option list
3137 driver_optionlist_count count of generic option list
3143 readconf_driver_init(
3145 driver_instance **anchor,
3146 driver_info *drivers_available,
3148 void *instance_default,
3150 optionlist *driver_optionlist,
3151 int driver_optionlist_count)
3153 driver_instance **p = anchor;
3154 driver_instance *d = NULL;
3157 while ((buffer = get_config_line()) != NULL)
3162 /* Read the first name on the line and test for the start of a new driver. A
3163 macro definition indicates the end of the previous driver. If this isn't the
3164 start of a new driver, the line will be re-read. */
3166 s = readconf_readname(name, sizeof(name), buffer);
3168 /* Handle macro definition, first finishing off the initialization of the
3169 previous driver, if any. */
3171 if (isupper(*name) && *s == '=')
3175 if (d->driver_name == NULL)
3176 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
3177 "no driver defined for %s \"%s\"", class, d->name);
3181 read_macro_assignment(buffer);
3185 /* If the line starts with a name terminated by a colon, we are at the
3186 start of the definition of a new driver. The rest of the line must be
3193 /* Finish off initializing the previous driver. */
3197 if (d->driver_name == NULL)
3198 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
3199 "no driver defined for %s \"%s\"", class, d->name);
3203 /* Check that we haven't already got a driver of this name */
3205 for (d = *anchor; d != NULL; d = d->next)
3206 if (Ustrcmp(name, d->name) == 0)
3207 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
3208 "there are two %ss called \"%s\"", class, name);
3210 /* Set up a new driver instance data block on the chain, with
3211 its default values installed. */
3213 d = store_get(instance_size);
3214 memcpy(d, instance_default, instance_size);
3217 d->name = string_copy(name);
3219 /* Clear out the "set" bits in the generic options */
3221 for (i = 0; i < driver_optionlist_count; i++)
3222 driver_optionlist[i].type &= ~opt_set;
3224 /* Check nothing more on this line, then do the next loop iteration. */
3226 while (isspace(*s)) s++;
3227 if (*s != 0) extra_chars_error(s, US"driver name ", name, US"");
3231 /* Not the start of a new driver. Give an error if we have not set up a
3232 current driver yet. */
3234 if (d == NULL) log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
3235 "%s name missing", class);
3237 /* First look to see if this is a generic option; if it is "driver",
3238 initialize the driver. If is it not a generic option, we can look for a
3239 private option provided that the driver has been previously set up. */
3241 if (readconf_handle_option(buffer, driver_optionlist,
3242 driver_optionlist_count, d, NULL))
3244 if (d->info == NULL && d->driver_name != NULL)
3245 init_driver(d, drivers_available, size_of_info, class);
3248 /* Handle private options - pass the generic block because some may
3249 live therein. A flag with each option indicates if it is in the public
3252 else if (d->info != NULL)
3254 readconf_handle_option(buffer, d->info->options,
3255 *(d->info->options_count), d, US"option \"%s\" unknown");
3258 /* The option is not generic and the driver name has not yet been given. */
3260 else log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "option \"%s\" unknown "
3261 "(\"driver\" must be specified before any private options)", name);
3264 /* Run the initialization function for the final driver. */
3268 if (d->driver_name == NULL)
3269 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
3270 "no driver defined for %s \"%s\"", class, d->name);
3277 /*************************************************
3278 * Check driver dependency *
3279 *************************************************/
3281 /* This function is passed a driver instance and a string. It checks whether
3282 any of the string options for the driver contains the given string as an
3286 d points to a driver instance block
3287 s the string to search for
3289 Returns: TRUE if a dependency is found
3293 readconf_depends(driver_instance *d, uschar *s)
3295 int count = *(d->info->options_count);
3299 for (ol = d->info->options; ol < d->info->options + count; ol++)
3301 void *options_block;
3303 int type = ol->type & opt_mask;
3304 if (type != opt_stringptr) continue;
3305 options_block = ((ol->type & opt_public) == 0)? d->options_block : (void *)d;
3306 value = *(uschar **)((uschar *)options_block + (long int)(ol->value));
3307 if (value != NULL && (ss = Ustrstr(value, s)) != NULL)
3309 if (ss <= value || (ss[-1] != '$' && ss[-1] != '{') ||
3310 isalnum(ss[Ustrlen(s)])) continue;
3311 DEBUG(D_transport) debug_printf("driver %s: \"%s\" option depends on %s\n",
3312 d->name, ol->name, s);
3317 DEBUG(D_transport) debug_printf("driver %s does not depend on %s\n", d->name, s);
3324 /*************************************************
3325 * Decode an error type for retries *
3326 *************************************************/
3328 /* This function is global because it is also called from the main
3329 program when testing retry information. It decodes strings such as "quota_7d"
3330 into numerical error codes.
3333 pp points to start of text
3334 p points past end of text
3335 basic_errno points to an int to receive the main error number
3336 more_errno points to an int to receive the secondary error data
3338 Returns: NULL if decoded correctly; else points to error text
3342 readconf_retry_error(uschar *pp, uschar *p, int *basic_errno, int *more_errno)
3346 while (q < p && *q != '_') q++;
3349 if (len == 5 && strncmpic(pp, US"quota", len) == 0)
3351 *basic_errno = ERRNO_EXIMQUOTA;
3352 if (q != p && (*more_errno = readconf_readtime(q+1, *p, FALSE)) < 0)
3353 return US"bad time value";
3356 else if (len == 7 && strncmpic(pp, US"refused", len) == 0)
3358 *basic_errno = ECONNREFUSED;
3361 if (strncmpic(q+1, US"MX", p-q-1) == 0) *more_errno = 'M';
3362 else if (strncmpic(q+1, US"A", p-q-1) == 0) *more_errno = 'A';
3363 else return US"A or MX expected after \"refused\"";
3367 else if (len == 7 && strncmpic(pp, US"timeout", len) == 0)
3369 *basic_errno = ETIMEDOUT;
3373 int xlen = p - q - 1;
3376 static uschar *extras[] =
3377 { US"A", US"MX", US"connect", US"connect_A", US"connect_MX" };
3378 static int values[] =
3379 { 'A', 'M', RTEF_CTOUT, RTEF_CTOUT|'A', RTEF_CTOUT|'M' };
3381 for (i = 0; i < sizeof(extras)/sizeof(uschar *); i++)
3383 if (strncmpic(x, extras[i], xlen) == 0)
3385 *more_errno = values[i];
3390 if (i >= sizeof(extras)/sizeof(uschar *))
3392 if (strncmpic(x, US"DNS", xlen) == 0)
3394 log_write(0, LOG_MAIN|LOG_PANIC, "\"timeout_dns\" is no longer "
3395 "available in retry rules (it has never worked) - treated as "
3398 else return US"\"A\", \"MX\", or \"connect\" expected after \"timeout\"";
3403 else if (strncmpic(pp, US"rcpt_4", 6) == 0)
3406 int x = 255; /* means "any 4xx code" */
3407 if (p != pp + 8) bad = TRUE; else
3409 int a = pp[6], b = pp[7];
3413 if (isdigit(b)) x += b - '0';
3414 else if (b == 'x') x += 100;
3417 else if (a != 'x' || b != 'x') bad = TRUE;
3420 if (bad) return US"rcpt_4 must be followed by xx, dx, or dd, where "
3421 "x is literal and d is any digit";
3423 *basic_errno = ERRNO_RCPT4XX;
3424 *more_errno = x << 8;
3427 else if (len == 4 && strncmpic(pp, US"auth", len) == 0 &&
3428 strncmpic(q+1, US"failed", p-q-1) == 0)
3430 *basic_errno = ERRNO_AUTHFAIL;
3433 else if (len != 1 || Ustrncmp(pp, "*", 1) != 0)
3434 return string_sprintf("unknown or malformed retry error \"%.*s\"", p-pp, pp);
3442 /*************************************************
3443 * Read retry information *
3444 *************************************************/
3446 /* Each line of retry information contains:
3448 . A domain name pattern or an address pattern;
3450 . An error name, possibly with additional data, or *;
3452 . An optional sequence of retry items, each consisting of an identifying
3453 letter, a cutoff time, and optional parameters.
3455 All this is decoded and placed into a control block. */
3458 /* Subroutine to read an argument, preceded by a comma and terminated
3459 by comma, semicolon, whitespace, or newline. The types are: 0 = time value,
3460 1 = fixed point number (returned *1000).
3463 paddr pointer to pointer to current character; updated
3464 type 0 => read a time; 1 => read a fixed point number
3466 Returns: time in seconds or fixed point number * 1000
3470 retry_arg(uschar **paddr, int type)
3475 if (*p++ != ',') log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "comma expected");
3477 while (isspace(*p)) p++;
3479 while (isalnum(*p) || (type == 1 && *p == '.')) p++;
3481 if (*p != 0 && !isspace(*p) && *p != ',' && *p != ';')
3482 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "comma or semicolon expected");
3488 return readconf_readtime(pp, *p, FALSE);
3490 return readconf_readfixed(pp, *p);
3492 return 0; /* Keep picky compilers happy */
3495 /* The function proper */
3498 readconf_retries(void)
3500 retry_config **chain = &retries;
3504 while ((p = get_config_line()) != NULL)
3506 retry_rule **rchain;
3509 next = store_get(sizeof(retry_config));
3512 chain = &(next->next);
3513 next->basic_errno = next->more_errno = 0;
3514 next->senders = NULL;
3516 rchain = &(next->rules);
3518 next->pattern = string_dequote(&p);
3519 while (isspace(*p)) p++;
3521 while (mac_isgraph(*p)) p++;
3522 if (p - pp <= 0) log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
3523 "missing error type");
3525 /* Test error names for things we understand. */
3527 if ((error = readconf_retry_error(pp, p, &(next->basic_errno),
3528 &(next->more_errno))) != NULL)
3529 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "%s", error);
3531 /* There may be an optional address list of senders to be used as another
3532 constraint on the rule. This was added later, so the syntax is a bit of a
3533 fudge. Anything that is not a retry rule starting "F," or "G," is treated as
3536 while (isspace(*p)) p++;
3537 if (Ustrncmp(p, "senders", 7) == 0)
3540 while (isspace(*p)) p++;
3541 if (*p++ != '=') log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
3542 "\"=\" expected after \"senders\" in retry rule");
3543 while (isspace(*p)) p++;
3544 next->senders = string_dequote(&p);
3547 /* Now the retry rules. Keep the maximum timeout encountered. */
3549 while (isspace(*p)) p++;
3553 retry_rule *rule = store_get(sizeof(retry_rule));
3555 rchain = &(rule->next);
3557 rule->rule = toupper(*p++);
3558 rule->timeout = retry_arg(&p, 0);
3559 if (rule->timeout > retry_maximum_timeout)
3560 retry_maximum_timeout = rule->timeout;
3564 case 'F': /* Fixed interval */
3565 rule->p1 = retry_arg(&p, 0);
3568 case 'G': /* Geometrically increasing intervals */
3569 case 'H': /* Ditto, but with randomness */
3570 rule->p1 = retry_arg(&p, 0);
3571 rule->p2 = retry_arg(&p, 1);
3575 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "unknown retry rule letter");
3579 if (rule->timeout <= 0 || rule->p1 <= 0 ||
3580 (rule->rule != 'F' && rule->p2 < 1000))
3581 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
3582 "bad parameters for retry rule");
3584 while (isspace(*p)) p++;
3588 while (isspace(*p)) p++;
3591 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "semicolon expected");
3598 /*************************************************
3599 * Initialize authenticators *
3600 *************************************************/
3602 /* Read the authenticators section of the configuration file.
3611 auth_instance *au, *bu;
3612 readconf_driver_init(US"authenticator",
3613 (driver_instance **)(&auths), /* chain anchor */
3614 (driver_info *)auths_available, /* available drivers */
3615 sizeof(auth_info), /* size of info block */
3616 &auth_defaults, /* default values for generic options */
3617 sizeof(auth_instance), /* size of instance block */
3618 optionlist_auths, /* generic options */
3619 optionlist_auths_size);
3621 for (au = auths; au != NULL; au = au->next)
3623 if (au->public_name == NULL)
3624 log_write(0, LOG_PANIC_DIE|LOG_CONFIG, "no public name specified for "
3625 "the %s authenticator", au->name);
3626 for (bu = au->next; bu != NULL; bu = bu->next)
3628 if (strcmpic(au->public_name, bu->public_name) == 0)
3630 if ((au->client && bu->client) || (au->server && bu->server))
3631 log_write(0, LOG_PANIC_DIE|LOG_CONFIG, "two %s authenticators "
3632 "(%s and %s) have the same public name (%s)",
3633 (au->client)? US"client" : US"server", au->name, bu->name,
3643 /*************************************************
3644 * Read ACL information *
3645 *************************************************/
3647 /* If this run of Exim is not doing something that involves receiving a
3648 message, we can just skip over the ACL information. No need to parse it.
3650 First, we have a function for acl_read() to call back to get the next line. We
3651 need to remember the line we passed, because at the end it will contain the
3652 name of the next ACL. */
3654 static uschar *acl_line;
3659 acl_line = get_config_line();
3664 /* Now the main function:
3667 skip TRUE when this Exim process is doing something that will
3668 not need the ACL data
3674 readconf_acl(BOOL skip)
3678 /* Not receiving messages, don't need to parse the ACL data */
3682 DEBUG(D_acl) debug_printf("skipping ACL configuration - not needed\n");
3683 while ((p = get_config_line()) != NULL);
3687 /* Read each ACL and add it into the tree. Macro (re)definitions are allowed
3690 acl_line = get_config_line();
3692 while(acl_line != NULL)
3698 p = readconf_readname(name, sizeof(name), acl_line);
3699 if (isupper(*name) && *p == '=')
3701 read_macro_assignment(acl_line);
3702 acl_line = get_config_line();
3706 if (*p != ':' || name[0] == 0)
3707 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "missing or malformed ACL name");
3709 node = store_get(sizeof(tree_node) + Ustrlen(name));
3710 Ustrcpy(node->name, name);
3711 if (!tree_insertnode(&acl_anchor, node))
3712 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
3713 "there are two ACLs called \"%s\"", name);
3715 node->data.ptr = acl_read(acl_callback, &error);
3717 if (node->data.ptr == NULL && error != NULL)
3718 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "error in ACL: %s", error);
3724 /*************************************************
3725 * Read configuration for local_scan() *
3726 *************************************************/
3728 /* This function is called after "begin local_scan" is encountered in the
3729 configuration file. If the local_scan() function allows for configuration
3730 options, we can process them. Otherwise, we expire in a panic.
3737 local_scan_init(void)
3739 #ifndef LOCAL_SCAN_HAS_OPTIONS
3740 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "local_scan() options not supported: "
3741 "(LOCAL_SCAN_HAS_OPTIONS not defined in Local/Makefile)");
3745 while ((p = get_config_line()) != NULL)
3747 (void) readconf_handle_option(p, local_scan_options, local_scan_options_count,
3748 NULL, US"local_scan option \"%s\" unknown");
3755 /*************************************************
3756 * Read rest of configuration (after main) *
3757 *************************************************/
3759 /* This function reads the rest of the runtime configuration, after the main
3760 configuration. It is called only when actually needed. Each subsequent section
3761 of the configuration starts with a line of the form
3765 where the name is "routers", "transports", etc. A section is terminated by
3766 hitting the next "begin" line, and the next name is left in next_section.
3767 Because it may confuse people as to whether the names are singular or plural,
3768 we add "s" if it's missing. There is always enough room in next_section for
3769 this. This function is basically just a switch.
3772 skip_acl TRUE if ACL information is not needed
3777 static uschar *section_list[] = {
3787 readconf_rest(BOOL skip_acl)
3791 while(next_section[0] != 0)
3795 int last = sizeof(section_list) / sizeof(uschar *);
3797 int n = Ustrlen(next_section);
3799 if (tolower(next_section[n-1]) != 's') Ustrcpy(next_section+n, "s");
3803 int c = strcmpic(next_section, section_list[mid]);
3805 if (c > 0) first = mid + 1; else last = mid;
3807 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
3808 "\"%.*s\" is not a known configuration section name", n, next_section);
3809 mid = (last + first)/2;
3813 if (((had ^= bit) & bit) == 0)
3814 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
3815 "\"%.*s\" section is repeated in the configuration file", n,
3820 case 0: readconf_acl(skip_acl); break;
3821 case 1: auths_init(); break;
3822 case 2: local_scan_init(); break;
3823 case 3: readconf_retries(); break;
3824 case 4: readconf_rewrites(); break;
3825 case 5: route_init(); break;
3826 case 6: transport_init(); break;
3830 (void)fclose(config_file);
3833 /* End of readconf.c */