1 /* $Cambridge: exim/src/src/readconf.c,v 1.2.2.1 2004/12/02 09:15:11 tom Exp $ */
3 /*************************************************
4 * Exim - an Internet mail transport agent *
5 *************************************************/
7 /* Copyright (c) University of Cambridge 1995 - 2004 */
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 { "acl_smtp_auth", opt_stringptr, &acl_smtp_auth },
139 { "acl_smtp_connect", opt_stringptr, &acl_smtp_connect },
140 { "acl_smtp_data", opt_stringptr, &acl_smtp_data },
141 { "acl_smtp_etrn", opt_stringptr, &acl_smtp_etrn },
142 { "acl_smtp_expn", opt_stringptr, &acl_smtp_expn },
143 { "acl_smtp_helo", opt_stringptr, &acl_smtp_helo },
144 { "acl_smtp_mail", opt_stringptr, &acl_smtp_mail },
145 { "acl_smtp_mailauth", opt_stringptr, &acl_smtp_mailauth },
146 #ifdef WITH_CONTENT_SCAN
147 { "acl_smtp_mime", opt_stringptr, &acl_smtp_mime },
149 { "acl_smtp_predata", opt_stringptr, &acl_smtp_predata },
150 { "acl_smtp_quit", opt_stringptr, &acl_smtp_quit },
151 { "acl_smtp_rcpt", opt_stringptr, &acl_smtp_rcpt },
153 { "acl_smtp_starttls", opt_stringptr, &acl_smtp_starttls },
155 { "acl_smtp_vrfy", opt_stringptr, &acl_smtp_vrfy },
156 { "admin_groups", opt_gidlist, &admin_groups },
157 { "allow_domain_literals", opt_bool, &allow_domain_literals },
158 { "allow_mx_to_ip", opt_bool, &allow_mx_to_ip },
159 { "allow_utf8_domains", opt_bool, &allow_utf8_domains },
160 { "auth_advertise_hosts", opt_stringptr, &auth_advertise_hosts },
161 { "auto_thaw", opt_time, &auto_thaw },
162 #ifdef WITH_CONTENT_SCAN
163 { "av_scanner", opt_stringptr, &av_scanner },
165 { "bi_command", opt_stringptr, &bi_command },
166 { "bounce_message_file", opt_stringptr, &bounce_message_file },
167 { "bounce_message_text", opt_stringptr, &bounce_message_text },
168 { "bounce_return_body", opt_bool, &bounce_return_body },
169 { "bounce_return_message", opt_bool, &bounce_return_message },
170 { "bounce_return_size_limit", opt_mkint, &bounce_return_size_limit },
171 { "bounce_sender_authentication",opt_stringptr,&bounce_sender_authentication },
172 { "callout_domain_negative_expire", opt_time, &callout_cache_domain_negative_expire },
173 { "callout_domain_positive_expire", opt_time, &callout_cache_domain_positive_expire },
174 { "callout_negative_expire", opt_time, &callout_cache_negative_expire },
175 { "callout_positive_expire", opt_time, &callout_cache_positive_expire },
176 { "callout_random_local_part",opt_stringptr, &callout_random_local_part },
177 { "check_log_inodes", opt_int, &check_log_inodes },
178 { "check_log_space", opt_Kint, &check_log_space },
179 { "check_spool_inodes", opt_int, &check_spool_inodes },
180 { "check_spool_space", opt_Kint, &check_spool_space },
181 { "daemon_smtp_port", opt_stringptr|opt_hidden, &daemon_smtp_port },
182 { "daemon_smtp_ports", opt_stringptr, &daemon_smtp_port },
183 { "delay_warning", opt_timelist, &delay_warning },
184 { "delay_warning_condition", opt_stringptr, &delay_warning_condition },
185 { "deliver_drop_privilege", opt_bool, &deliver_drop_privilege },
186 { "deliver_queue_load_max", opt_fixed, &deliver_queue_load_max },
187 { "delivery_date_remove", opt_bool, &delivery_date_remove },
188 { "dns_again_means_nonexist", opt_stringptr, &dns_again_means_nonexist },
189 { "dns_check_names_pattern", opt_stringptr, &check_dns_names_pattern },
190 { "dns_ipv4_lookup", opt_stringptr, &dns_ipv4_lookup },
191 { "dns_retrans", opt_time, &dns_retrans },
192 { "dns_retry", opt_int, &dns_retry },
193 /* This option is now a no-op, retained for compability */
194 { "drop_cr", opt_bool, &drop_cr },
195 /*********************************************************/
196 { "envelope_to_remove", opt_bool, &envelope_to_remove },
197 { "errors_copy", opt_stringptr, &errors_copy },
198 { "errors_reply_to", opt_stringptr, &errors_reply_to },
199 { "exim_group", opt_gid, &exim_gid },
200 { "exim_path", opt_stringptr, &exim_path },
201 { "exim_user", opt_uid, &exim_uid },
202 { "extra_local_interfaces", opt_stringptr, &extra_local_interfaces },
203 { "extract_addresses_remove_arguments", opt_bool, &extract_addresses_remove_arguments },
204 { "finduser_retries", opt_int, &finduser_retries },
205 { "freeze_tell", opt_stringptr, &freeze_tell },
206 { "gecos_name", opt_stringptr, &gecos_name },
207 { "gecos_pattern", opt_stringptr, &gecos_pattern },
208 { "header_line_maxsize", opt_int, &header_line_maxsize },
209 { "header_maxsize", opt_int, &header_maxsize },
210 { "headers_charset", opt_stringptr, &headers_charset },
211 { "helo_accept_junk_hosts", opt_stringptr, &helo_accept_junk_hosts },
212 { "helo_allow_chars", opt_stringptr, &helo_allow_chars },
213 { "helo_lookup_domains", opt_stringptr, &helo_lookup_domains },
214 { "helo_try_verify_hosts", opt_stringptr, &helo_try_verify_hosts },
215 { "helo_verify_hosts", opt_stringptr, &helo_verify_hosts },
216 { "hold_domains", opt_stringptr, &hold_domains },
217 { "host_lookup", opt_stringptr, &host_lookup },
218 { "host_lookup_order", opt_stringptr, &host_lookup_order },
219 { "host_reject_connection", opt_stringptr, &host_reject_connection },
220 { "hosts_connection_nolog", opt_stringptr, &hosts_connection_nolog },
221 { "hosts_treat_as_local", opt_stringptr, &hosts_treat_as_local },
223 { "ibase_servers", opt_stringptr, &ibase_servers },
225 { "ignore_bounce_errors_after", opt_time, &ignore_bounce_errors_after },
226 { "ignore_fromline_hosts", opt_stringptr, &ignore_fromline_hosts },
227 { "ignore_fromline_local", opt_bool, &ignore_fromline_local },
228 { "keep_malformed", opt_time, &keep_malformed },
230 { "ldap_default_servers", opt_stringptr, &eldap_default_servers },
231 { "ldap_version", opt_int, &eldap_version },
233 { "local_from_check", opt_bool, &local_from_check },
234 { "local_from_prefix", opt_stringptr, &local_from_prefix },
235 { "local_from_suffix", opt_stringptr, &local_from_suffix },
236 { "local_interfaces", opt_stringptr, &local_interfaces },
237 { "local_scan_timeout", opt_time, &local_scan_timeout },
238 { "local_sender_retain", opt_bool, &local_sender_retain },
239 { "localhost_number", opt_stringptr, &host_number_string },
240 { "log_file_path", opt_stringptr, &log_file_path },
241 { "log_selector", opt_stringptr, &log_selector_string },
242 { "log_timezone", opt_bool, &log_timezone },
243 { "lookup_open_max", opt_int, &lookup_open_max },
244 { "max_username_length", opt_int, &max_username_length },
245 { "message_body_visible", opt_mkint, &message_body_visible },
246 { "message_id_header_domain", opt_stringptr, &message_id_domain },
247 { "message_id_header_text", opt_stringptr, &message_id_text },
248 { "message_logs", opt_bool, &message_logs },
249 { "message_size_limit", opt_stringptr, &message_size_limit },
250 #ifdef SUPPORT_MOVE_FROZEN_MESSAGES
251 { "move_frozen_messages", opt_bool, &move_frozen_messages },
253 { "mua_wrapper", opt_bool, &mua_wrapper },
255 { "mysql_servers", opt_stringptr, &mysql_servers },
257 { "never_users", opt_uidlist, &never_users },
259 { "oracle_servers", opt_stringptr, &oracle_servers },
261 { "percent_hack_domains", opt_stringptr, &percent_hack_domains },
263 { "perl_at_start", opt_bool, &opt_perl_at_start },
264 { "perl_startup", opt_stringptr, &opt_perl_startup },
267 { "pgsql_servers", opt_stringptr, &pgsql_servers },
269 { "pid_file_path", opt_stringptr, &pid_file_path },
270 { "pipelining_advertise_hosts", opt_stringptr, &pipelining_advertise_hosts },
271 { "preserve_message_logs", opt_bool, &preserve_message_logs },
272 { "primary_hostname", opt_stringptr, &primary_hostname },
273 { "print_topbitchars", opt_bool, &print_topbitchars },
274 { "process_log_path", opt_stringptr, &process_log_path },
275 { "prod_requires_admin", opt_bool, &prod_requires_admin },
276 { "qualify_domain", opt_stringptr, &qualify_domain_sender },
277 { "qualify_recipient", opt_stringptr, &qualify_domain_recipient },
278 { "queue_domains", opt_stringptr, &queue_domains },
279 { "queue_list_requires_admin",opt_bool, &queue_list_requires_admin },
280 { "queue_only", opt_bool, &queue_only },
281 { "queue_only_file", opt_stringptr, &queue_only_file },
282 { "queue_only_load", opt_fixed, &queue_only_load },
283 { "queue_only_override", opt_bool, &queue_only_override },
284 { "queue_run_in_order", opt_bool, &queue_run_in_order },
285 { "queue_run_max", opt_int, &queue_run_max },
286 { "queue_smtp_domains", opt_stringptr, &queue_smtp_domains },
287 { "receive_timeout", opt_time, &receive_timeout },
288 { "received_header_text", opt_stringptr, &received_header_text },
289 { "received_headers_max", opt_int, &received_headers_max },
290 { "recipient_unqualified_hosts", opt_stringptr, &recipient_unqualified_hosts },
291 { "recipients_max", opt_int, &recipients_max },
292 { "recipients_max_reject", opt_bool, &recipients_max_reject },
293 { "remote_max_parallel", opt_int, &remote_max_parallel },
294 { "remote_sort_domains", opt_stringptr, &remote_sort_domains },
295 { "retry_data_expire", opt_time, &retry_data_expire },
296 { "retry_interval_max", opt_time, &retry_interval_max },
297 { "return_path_remove", opt_bool, &return_path_remove },
298 { "return_size_limit", opt_mkint|opt_hidden, &bounce_return_size_limit },
299 { "rfc1413_hosts", opt_stringptr, &rfc1413_hosts },
300 { "rfc1413_query_timeout", opt_time, &rfc1413_query_timeout },
301 { "sender_unqualified_hosts", opt_stringptr, &sender_unqualified_hosts },
302 { "smtp_accept_keepalive", opt_bool, &smtp_accept_keepalive },
303 { "smtp_accept_max", opt_int, &smtp_accept_max },
304 { "smtp_accept_max_nonmail", opt_int, &smtp_accept_max_nonmail },
305 { "smtp_accept_max_nonmail_hosts", opt_stringptr, &smtp_accept_max_nonmail_hosts },
306 { "smtp_accept_max_per_connection", opt_int, &smtp_accept_max_per_connection },
307 { "smtp_accept_max_per_host", opt_stringptr, &smtp_accept_max_per_host },
308 { "smtp_accept_queue", opt_int, &smtp_accept_queue },
309 { "smtp_accept_queue_per_connection", opt_int, &smtp_accept_queue_per_connection },
310 { "smtp_accept_reserve", opt_int, &smtp_accept_reserve },
311 { "smtp_active_hostname", opt_stringptr, &raw_active_hostname },
312 { "smtp_banner", opt_stringptr, &smtp_banner },
313 { "smtp_check_spool_space", opt_bool, &smtp_check_spool_space },
314 { "smtp_connect_backlog", opt_int, &smtp_connect_backlog },
315 { "smtp_enforce_sync", opt_bool, &smtp_enforce_sync },
316 { "smtp_etrn_command", opt_stringptr, &smtp_etrn_command },
317 { "smtp_etrn_serialize", opt_bool, &smtp_etrn_serialize },
318 { "smtp_load_reserve", opt_fixed, &smtp_load_reserve },
319 { "smtp_max_synprot_errors", opt_int, &smtp_max_synprot_errors },
320 { "smtp_max_unknown_commands",opt_int, &smtp_max_unknown_commands },
321 { "smtp_ratelimit_hosts", opt_stringptr, &smtp_ratelimit_hosts },
322 { "smtp_ratelimit_mail", opt_stringptr, &smtp_ratelimit_mail },
323 { "smtp_ratelimit_rcpt", opt_stringptr, &smtp_ratelimit_rcpt },
324 { "smtp_receive_timeout", opt_time, &smtp_receive_timeout },
325 { "smtp_reserve_hosts", opt_stringptr, &smtp_reserve_hosts },
326 { "smtp_return_error_details",opt_bool, &smtp_return_error_details },
327 #ifdef WITH_CONTENT_SCAN
328 { "spamd_address", opt_stringptr, &spamd_address },
330 { "split_spool_directory", opt_bool, &split_spool_directory },
331 { "spool_directory", opt_stringptr, &spool_directory },
332 { "strip_excess_angle_brackets", opt_bool, &strip_excess_angle_brackets },
333 { "strip_trailing_dot", opt_bool, &strip_trailing_dot },
334 { "syslog_duplication", opt_bool, &syslog_duplication },
335 { "syslog_facility", opt_stringptr, &syslog_facility_str },
336 { "syslog_processname", opt_stringptr, &syslog_processname },
337 { "syslog_timestamp", opt_bool, &syslog_timestamp },
338 { "system_filter", opt_stringptr, &system_filter },
339 { "system_filter_directory_transport", opt_stringptr,&system_filter_directory_transport },
340 { "system_filter_file_transport",opt_stringptr,&system_filter_file_transport },
341 { "system_filter_group", opt_gid, &system_filter_gid },
342 { "system_filter_pipe_transport",opt_stringptr,&system_filter_pipe_transport },
343 { "system_filter_reply_transport",opt_stringptr,&system_filter_reply_transport },
344 { "system_filter_user", opt_uid, &system_filter_uid },
345 { "tcp_nodelay", opt_bool, &tcp_nodelay },
346 { "timeout_frozen_after", opt_time, &timeout_frozen_after },
347 { "timezone", opt_stringptr, &timezone_string },
349 { "tls_advertise_hosts", opt_stringptr, &tls_advertise_hosts },
350 { "tls_certificate", opt_stringptr, &tls_certificate },
351 { "tls_crl", opt_stringptr, &tls_crl },
352 { "tls_dhparam", opt_stringptr, &tls_dhparam },
353 { "tls_on_connect_ports", opt_stringptr, &tls_on_connect_ports },
354 { "tls_privatekey", opt_stringptr, &tls_privatekey },
355 { "tls_remember_esmtp", opt_bool, &tls_remember_esmtp },
356 { "tls_require_ciphers", opt_stringptr, &tls_require_ciphers },
357 { "tls_try_verify_hosts", opt_stringptr, &tls_try_verify_hosts },
358 { "tls_verify_certificates", opt_stringptr, &tls_verify_certificates },
359 { "tls_verify_hosts", opt_stringptr, &tls_verify_hosts },
361 { "trusted_groups", opt_gidlist, &trusted_groups },
362 { "trusted_users", opt_uidlist, &trusted_users },
363 { "unknown_login", opt_stringptr, &unknown_login },
364 { "unknown_username", opt_stringptr, &unknown_username },
365 { "untrusted_set_sender", opt_stringptr, &untrusted_set_sender },
366 { "uucp_from_pattern", opt_stringptr, &uucp_from_pattern },
367 { "uucp_from_sender", opt_stringptr, &uucp_from_sender },
368 { "warn_message_file", opt_stringptr, &warn_message_file },
369 { "write_rejectlog", opt_bool, &write_rejectlog }
372 static int optionlist_config_size =
373 sizeof(optionlist_config)/sizeof(optionlist);
377 /*************************************************
378 * Find the name of an option *
379 *************************************************/
381 /* This function is to aid debugging. Various functions take arguments that are
382 pointer variables in the options table or in option tables for various drivers.
383 For debugging output, it is useful to be able to find the name of the option
384 which is currently being processed. This function finds it, if it exists, by
385 searching the table(s).
387 Arguments: a value that is presumed to be in the table above
388 Returns: the option name, or an empty string
392 readconf_find_option(void *p)
396 transport_instance *t;
398 for (i = 0; i < optionlist_config_size; i++)
399 if (p == optionlist_config[i].value) return US optionlist_config[i].name;
401 for (r = routers; r != NULL; r = r->next)
403 router_info *ri = r->info;
404 for (i = 0; i < ri->options_count[0]; i++)
406 if ((ri->options[i].type & opt_mask) != opt_stringptr) continue;
407 if (p == (char *)(r->options_block) + (long int)(ri->options[i].value))
408 return US ri->options[i].name;
412 for (t = transports; t != NULL; t = t->next)
414 transport_info *ti = t->info;
415 for (i = 0; i < ti->options_count[0]; i++)
417 if ((ti->options[i].type & opt_mask) != opt_stringptr) continue;
418 if (p == (char *)(t->options_block) + (long int)(ti->options[i].value))
419 return US ti->options[i].name;
430 /*************************************************
431 * Read configuration line *
432 *************************************************/
434 /* A logical line of text is read from the configuration file into the big
435 buffer, taking account of macros, .includes, and continuations. The size of
436 big_buffer is increased if necessary. The count of configuration lines is
437 maintained. Physical input lines starting with # (ignoring leading white space,
438 and after macro replacement) and empty logical lines are always ignored.
439 Leading and trailing spaces are removed.
441 If we hit a line of the form "begin xxxx", the xxxx is placed in the
442 next_section vector, and the function returns NULL, indicating the end of a
443 configuration section. On end-of-file, NULL is returned with next_section
448 Returns: a pointer to the first non-blank in the line,
449 or NULL if eof or end of section is reached
453 get_config_line(void)
455 int startoffset = 0; /* To first non-blank char in logical line */
456 int len = 0; /* Of logical line so far */
462 /* Loop for handling continuation lines, skipping comments, and dealing with
467 if (Ufgets(big_buffer+len, big_buffer_size-len, config_file) == NULL)
469 if (config_file_stack != NULL) /* EOF inside .include */
472 config_file = config_file_stack->file;
473 config_filename = config_file_stack->filename;
474 config_lineno = config_file_stack->lineno;
475 config_file_stack = config_file_stack->next;
479 /* EOF at top level */
481 if (cstate_stack_ptr >= 0)
482 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
483 "Unexpected end of configuration file: .endif missing");
485 if (len != 0) break; /* EOF after continuation */
486 next_section[0] = 0; /* EOF at start of logical line */
491 newlen = len + Ustrlen(big_buffer + len);
493 /* Handle pathologically long physical lines - yes, it did happen - by
494 extending big_buffer at this point. The code also copes with very long
497 while (newlen == big_buffer_size - 1 && big_buffer[newlen - 1] != '\n')
500 big_buffer_size += BIG_BUFFER_SIZE;
501 newbuffer = store_malloc(big_buffer_size);
503 /* This use of strcpy is OK because we know that the string in the old
504 buffer is shorter than the new buffer. */
506 Ustrcpy(newbuffer, big_buffer);
507 store_free(big_buffer);
508 big_buffer = newbuffer;
509 if (Ufgets(big_buffer+newlen, big_buffer_size-newlen, config_file) == NULL)
511 newlen += Ustrlen(big_buffer + newlen);
514 /* Find the true start of the physical line - leading spaces are always
517 ss = big_buffer + len;
518 while (isspace(*ss)) ss++;
520 /* Process the physical line for macros. If this is the start of the logical
521 line, skip over initial text at the start of the line if it starts with an
522 upper case character followed by a sequence of name characters and an equals
523 sign, because that is the definition of a new macro, and we don't do
524 replacement therein. */
527 if (len == 0 && isupper(*s))
529 while (isalnum(*s) || *s == '_') s++;
530 while (isspace(*s)) s++;
531 if (*s != '=') s = ss; /* Not a macro definition */
534 /* For each defined macro, scan the line (from after XXX= if present),
535 replacing all occurrences of the macro. */
538 for (m = macros; m != NULL; m = m->next)
543 while ((p = Ustrstr(t, m->name)) != NULL)
546 int namelen = Ustrlen(m->name);
547 int replen = Ustrlen(m->replacement);
549 /* Expand the buffer if necessary */
551 while (newlen - namelen + replen + 1 > big_buffer_size)
553 int newsize = big_buffer_size + BIG_BUFFER_SIZE;
554 uschar *newbuffer = store_malloc(newsize);
555 memcpy(newbuffer, big_buffer, newlen + 1);
556 p = newbuffer + (p - big_buffer);
557 s = newbuffer + (s - big_buffer);
558 ss = newbuffer + (ss - big_buffer);
559 t = newbuffer + (t - big_buffer);
560 big_buffer_size = newsize;
561 store_free(big_buffer);
562 big_buffer = newbuffer;
565 /* Shuffle the remaining characters up or down in the buffer before
566 copying in the replacement text. Don't rescan the replacement for this
570 moveby = replen - namelen;
573 memmove(p + replen, pp, (big_buffer + newlen) - pp + 1);
576 Ustrncpy(p, m->replacement, replen);
582 /* An empty macro replacement at the start of a line could mean that ss no
583 longer points to the first non-blank character. */
585 while (isspace(*ss)) ss++;
587 /* Check for comment lines - these are physical lines. */
589 if (*ss == '#') continue;
591 /* Handle conditionals, which are also applied to physical lines. Conditions
592 are of the form ".ifdef ANYTEXT" and are treated as true if any macro
593 expansion occured on the rest of the line. A preliminary test for the leading
594 '.' saves effort on most lines. */
600 /* Search the list of conditional directives */
602 for (i = 0; i < cond_list_size; i++)
605 cond_item *c = cond_list+i;
606 if (Ustrncmp(ss+1, c->name, c->namelen) != 0) continue;
608 /* The following character must be white space or end of string */
610 n = ss[1 + c->namelen];
611 if (n != ' ' && n != 't' && n != '\n' && n != 0) break;
613 /* .ifdef and .ifndef push the current state onto the stack, then set
614 a new one from the table. Stack overflow is an error */
618 if (cstate_stack_ptr >= CSTATE_STACK_SIZE - 1)
619 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
620 ".%s nested too deeply", c->name);
621 cstate_stack[++cstate_stack_ptr] = cstate;
622 cstate = next_cstate[cstate][macro_found? c->action1 : c->action2];
625 /* For any of the others, stack underflow is an error. The next state
626 comes either from the stack (.endif) or from the table. */
630 if (cstate_stack_ptr < 0)
631 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
632 ".%s without matching .ifdef", c->name);
633 cstate = (c->pushpop < 0)? cstate_stack[cstate_stack_ptr--] :
634 next_cstate[cstate][macro_found? c->action1 : c->action2];
637 /* Having dealt with a directive, break the loop */
642 /* If we have handled a conditional directive, continue with the next
643 physical line. Otherwise, fall through. */
645 if (i < cond_list_size) continue;
648 /* If the conditional state is not 0 (actively using these lines), ignore
651 if (cstate != 0) continue; /* Conditional skip */
653 /* Handle .include lines - these are also physical lines. */
655 if (Ustrncmp(ss, ".include", 8) == 0 &&
657 (Ustrncmp(ss+8, "_if_exists", 10) == 0 && isspace(ss[18]))))
660 int include_if_exists = isspace(ss[8])? 0 : 10;
661 config_file_item *save;
664 ss += 9 + include_if_exists;
665 while (isspace(*ss)) ss++;
666 t = ss + Ustrlen(ss);
667 while (t > ss && isspace(t[-1])) t--;
668 if (*ss == '\"' && t[-1] == '\"')
675 if (include_if_exists != 0 && (Ustat(ss, &statbuf) != 0)) continue;
677 save = store_get(sizeof(config_file_item));
678 save->next = config_file_stack;
679 config_file_stack = save;
680 save->file = config_file;
681 save->filename = config_filename;
682 save->lineno = config_lineno;
684 config_file = Ufopen(ss, "rb");
685 if (config_file == NULL)
686 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "failed to open included "
687 "configuration file %s", ss);
688 config_filename = string_copy(ss);
693 /* If this is the start of the logical line, remember where the non-blank
694 data starts. Otherwise shuffle down continuation lines to remove leading
698 startoffset = ss - big_buffer;
701 s = big_buffer + len;
704 memmove(s, ss, (newlen - len) - (ss - s) + 1);
709 /* Accept the new addition to the line. Remove trailing white space. */
712 while (len > 0 && isspace(big_buffer[len-1])) len--;
715 /* We are done if the line does not end in backslash and contains some data.
716 Empty logical lines are ignored. For continuations, remove the backslash and
717 go round the loop to read the continuation line. */
721 if (big_buffer[len-1] != '\\') break; /* End of logical line */
722 big_buffer[--len] = 0; /* Remove backslash */
724 } /* Loop for reading multiple physical lines */
726 /* We now have a logical line. Test for the end of a configuration section (or,
727 more accurately, for the start of the next section). Place the name of the next
728 section in next_section, and return NULL. If the name given is longer than
729 next_section, truncate it. It will be unrecognized later, because all the known
730 section names do fit. Leave space for pluralizing. */
732 s = big_buffer + startoffset; /* First non-space character */
733 if (strncmpic(s, US"begin ", 6) == 0)
736 while (isspace(*s)) s++;
737 if (big_buffer + len - s > sizeof(next_section) - 2)
738 s[sizeof(next_section) - 2] = 0;
739 Ustrcpy(next_section, s);
743 /* Return the first non-blank character. */
750 /*************************************************
752 *************************************************/
754 /* The yield is the pointer to the next uschar. Names longer than the
755 output space are silently truncated. This function is also used from acl.c when
759 name where to put the name
763 Returns: new input pointer
767 readconf_readname(uschar *name, int len, uschar *s)
770 while (isspace(*s)) s++;
773 while (isalnum(*s) || *s == '_')
775 if (p < len-1) name[p++] = *s;
780 while (isspace(*s)) s++;
787 /*************************************************
788 * Read a time value *
789 *************************************************/
791 /* This function is also called from outside, to read argument
792 time values. The format of a time value is:
794 [<n>w][<n>d][<n>h][<n>m][<n>s]
796 as long as at least one is present. If a format error is encountered,
797 return a negative value. The value must be terminated by the given
802 terminator required terminating character
803 return_msec if TRUE, allow fractional seconds and return milliseconds
805 Returns: the time value, or -1 on syntax error
806 value is seconds if return_msec is FALSE
807 value is milliseconds if return_msec is TRUE
811 readconf_readtime(uschar *s, int terminator, BOOL return_msec)
819 if (!isdigit(*s)) return -1;
820 (void)sscanf(CS s, "%d%n", &value, &count);
825 case 'w': value *= 7;
826 case 'd': value *= 24;
827 case 'h': value *= 60;
828 case 'm': value *= 60;
833 if (!return_msec) return -1;
834 (void)sscanf(CS s, "%lf%n", &fraction, &count);
836 if (*s++ != 's') return -1;
837 yield += (int)(fraction * 1000.0);
843 if (return_msec) value *= 1000;
845 if (*s == terminator) return yield;
847 /* Control never reaches here. */
852 /*************************************************
853 * Read a fixed point value *
854 *************************************************/
856 /* The value is returned *1000
860 terminator required terminator
862 Returns: the value, or -1 on error
866 readconf_readfixed(uschar *s, int terminator)
870 if (!isdigit(*s)) return -1;
871 (void)sscanf(CS s, "%d%n", &value, &count);
873 yield = value * 1000;
877 while (isdigit((*(++s))))
879 yield += (*s - '0') * m;
884 return (*s == terminator)? yield : (-1);
889 /*************************************************
890 * Find option in list *
891 *************************************************/
893 /* The lists are always in order, so binary chop can be used.
896 name the option name to search for
897 ol the first entry in the option list
898 last one more than the offset of the last entry in the option list
900 Returns: pointer to an option entry, or NULL if not found
904 find_option(uschar *name, optionlist *ol, int last)
909 int middle = (first + last)/2;
910 int c = Ustrcmp(name, ol[middle].name);
911 if (c == 0) return ol + middle;
912 else if (c > 0) first = middle + 1;
920 /*************************************************
921 * Find a set flag in option list *
922 *************************************************/
924 /* Because some versions of Unix make no restrictions on the values of uids and
925 gids (even negative ones), we cannot represent "unset" by a special value.
926 There is therefore a separate boolean variable for each one indicating whether
927 a value is set or not. This function returns a pointer to the boolean, given
928 the original option name. It is a major disaster if the flag cannot be found.
931 name the name of the uid or gid option
932 oltop points to the start of the relevant option list
933 last one more than the offset of the last item in the option list
934 data_block NULL when reading main options => data values in the option
935 list are absolute addresses; otherwise they are byte offsets
936 in data_block (used for driver options)
938 Returns: a pointer to the boolean flag.
942 get_set_flag(uschar *name, optionlist *oltop, int last, void *data_block)
946 sprintf(CS name2, "*set_%.50s", name);
947 ol = find_option(name2, oltop, last);
948 if (ol == NULL) log_write(0, LOG_MAIN|LOG_PANIC_DIE,
949 "Exim internal error: missing set flag for %s", name);
950 return (data_block == NULL)? (BOOL *)(ol->value) :
951 (BOOL *)((uschar *)data_block + (long int)(ol->value));
957 /*************************************************
958 * Output extra characters message and die *
959 *************************************************/
961 /* Called when an option line has junk on the end. Sometimes this is because
962 the sysadmin thinks comments are permitted.
965 s points to the extra characters
966 t1..t3 strings to insert in the log message
968 Returns: doesn't return; dies
972 extra_chars_error(uschar *s, uschar *t1, uschar *t2, uschar *t3)
974 uschar *comment = US"";
975 if (*s == '#') comment = US" (# is comment only at line start)";
976 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
977 "extra characters follow %s%s%s%s", t1, t2, t3, comment);
982 /*************************************************
983 * Read rewrite information *
984 *************************************************/
986 /* Each line of rewrite information contains:
988 . A complete address in the form user@domain, possibly with
989 leading * for each part; or alternatively, a regex.
991 . A replacement string (which will be expanded).
993 . An optional sequence of one-letter flags, indicating which
994 headers etc. to apply this rule to.
996 All this is decoded and placed into a control block. The OR of the flags is
997 maintained in a common word.
1000 p points to the string that makes up the rule
1001 existflags points to the overall flag word
1002 isglobal TRUE if reading global rewrite rules
1004 Returns: the control block for the parsed rule.
1007 static rewrite_rule *
1008 readconf_one_rewrite(uschar *p, int *existflags, BOOL isglobal)
1010 rewrite_rule *next = store_get(sizeof(rewrite_rule));
1013 next->key = string_dequote(&p);
1015 while (isspace(*p)) p++;
1017 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1018 "missing rewrite replacement string");
1021 next->replacement = string_dequote(&p);
1023 while (*p != 0) switch (*p++)
1025 case ' ': case '\t': break;
1027 case 'q': next->flags |= rewrite_quit; break;
1028 case 'w': next->flags |= rewrite_whole; break;
1030 case 'h': next->flags |= rewrite_all_headers; break;
1031 case 's': next->flags |= rewrite_sender; break;
1032 case 'f': next->flags |= rewrite_from; break;
1033 case 't': next->flags |= rewrite_to; break;
1034 case 'c': next->flags |= rewrite_cc; break;
1035 case 'b': next->flags |= rewrite_bcc; break;
1036 case 'r': next->flags |= rewrite_replyto; break;
1038 case 'E': next->flags |= rewrite_all_envelope; break;
1039 case 'F': next->flags |= rewrite_envfrom; break;
1040 case 'T': next->flags |= rewrite_envto; break;
1042 case 'Q': next->flags |= rewrite_qualify; break;
1043 case 'R': next->flags |= rewrite_repeat; break;
1046 next->flags |= rewrite_smtp;
1047 if (next->key[0] != '^' && Ustrncmp(next->key, "\\N^", 3) != 0)
1048 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1049 "rewrite rule has the S flag but is not a regular expression");
1053 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1054 "unknown rewrite flag character '%c' "
1055 "(could be missing quotes round replacement item)", p[-1]);
1059 /* If no action flags are set, set all the "normal" rewrites. */
1061 if ((next->flags & (rewrite_all | rewrite_smtp)) == 0)
1062 next->flags |= isglobal? rewrite_all : rewrite_all_headers;
1064 /* Remember which exist, for optimization, and return the rule */
1066 *existflags |= next->flags;
1073 /*************************************************
1074 * Read global rewrite information *
1075 *************************************************/
1077 /* Each line is a single rewrite rule; it is parsed into a control block
1078 by readconf_one_rewrite(), and its flags are ORed into the global flag
1079 word rewrite_existflags. */
1082 readconf_rewrites(void)
1084 rewrite_rule **chain = &global_rewrite_rules;
1087 while ((p = get_config_line()) != NULL)
1089 rewrite_rule *next = readconf_one_rewrite(p, &rewrite_existflags, TRUE);
1091 chain = &(next->next);
1097 /*************************************************
1099 *************************************************/
1101 /* Strings are read into the normal store pool. As long we aren't too
1102 near the end of the current block, the string will just use what is necessary
1103 on the top of the stacking pool, because string_cat() uses the extension
1107 s the rest of the input line
1108 name the option name (for errors)
1110 Returns: pointer to the string
1114 read_string(uschar *s, uschar *name)
1119 if (*s != '\"') return string_copy(s);
1122 yield = string_dequote(&s);
1124 if (s == ss+1 || s[-1] != '\"')
1125 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1126 "missing quote at end of string value for %s", name);
1128 if (*s != 0) extra_chars_error(s, US"string value for ", name, US"");
1134 /*************************************************
1135 * Handle option line *
1136 *************************************************/
1138 /* This function is called from several places to process a line containing the
1139 setting of an option. The first argument is the line to be decoded; it has been
1140 checked not to be empty and not to start with '#'. Trailing newlines and white
1141 space have been removed. The second argument is a pointer to the list of
1142 variable names that are to be recognized, together with their types and
1143 locations, and the third argument gives the number of entries in the list.
1145 The fourth argument is a pointer to a data block. If it is NULL, then the data
1146 values in the options list are absolute addresses. Otherwise, they are byte
1147 offsets in the data block.
1149 String option data may continue onto several lines; this function reads further
1150 data from config_file if necessary.
1152 The yield of this function is normally zero. If a string continues onto
1153 multiple lines, then the data value is permitted to be followed by a comma
1154 or a semicolon (for use in drivers) and the yield is that character.
1157 buffer contains the configuration line to be handled
1158 oltop points to the start of the relevant option list
1159 last one more than the offset of the last item in the option list
1160 data_block NULL when reading main options => data values in the option
1161 list are absolute addresses; otherwise they are byte offsets
1162 in data_block when they have opt_public set; otherwise
1163 they are byte offsets in data_block->options_block.
1164 unknown_txt format string to use in panic message for unknown option;
1165 must contain %s for option name
1166 if given as NULL, don't panic on unknown option
1168 Returns: TRUE if an option was read successfully,
1169 FALSE false for an unknown option if unknown_txt == NULL,
1170 otherwise panic and die on an unknown option
1174 readconf_handle_option(uschar *buffer, optionlist *oltop, int last,
1175 void *data_block, uschar *unknown_txt)
1179 int n, count, type, value;
1183 BOOL boolvalue = TRUE;
1184 BOOL freesptr = TRUE;
1185 optionlist *ol, *ol2;
1189 uschar *inttype = US"";
1195 /* There may be leading spaces; thereafter, we expect an option name starting
1198 while (isspace(*s)) s++;
1200 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "option setting expected: %s", s);
1202 /* Read the name of the option, and skip any subsequent white space. If
1203 it turns out that what we read was "hide", set the flag indicating that
1204 this is a secure option, and loop to read the next word. */
1206 for (n = 0; n < 2; n++)
1208 while (isalnum(*s) || *s == '_')
1210 if (ptr < sizeof(name)-1) name[ptr++] = *s;
1214 while (isspace(*s)) s++;
1215 if (Ustrcmp(name, "hide") != 0) break;
1216 issecure = opt_secure;
1220 /* Deal with "no_" or "not_" here for booleans */
1222 if (Ustrncmp(name, "no_", 3) == 0)
1228 if (Ustrncmp(name, "not_", 4) == 0)
1234 /* Search the list for the given name. A non-existent name, or an option that
1235 is set twice, is a disaster. */
1237 ol = find_option(name + offset, oltop, last);
1241 if (unknown_txt == NULL) return FALSE;
1242 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, CS unknown_txt, name);
1245 if ((ol->type & opt_set) != 0)
1247 uschar *mname = name;
1248 if (Ustrncmp(mname, "no_", 3) == 0) mname += 3;
1249 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1250 "\"%s\" option set for the second time", mname);
1253 ol->type |= opt_set | issecure;
1254 type = ol->type & opt_mask;
1256 /* Types with data values must be followed by '='; the "no[t]_" prefix
1257 applies only to boolean values. */
1259 if (type < opt_bool || type > opt_bool_last)
1262 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1263 "negation prefix applied to a non-boolean option");
1265 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1266 "unexpected end of line (data missing) after %s", name);
1268 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "missing \"=\" after %s", name);
1271 /* If a boolean wasn't preceded by "no[t]_" it can be followed by = and
1272 true/false/yes/no, or, in the case of opt_expanded_bool, a general string that
1273 ultimately expands to one of those values. */
1275 else if (*s != 0 && (offset != 0 || *s != '='))
1276 extra_chars_error(s, US"boolean option ", name, US"");
1278 /* Skip white space after = */
1280 if (*s == '=') while (isspace((*(++s))));
1282 /* If there is a data block and the opt_public flag is not set, change
1283 the data block pointer to the private options block. */
1285 if (data_block != NULL && (ol->type & opt_public) == 0)
1286 data_block = (void *)(((driver_instance *)data_block)->options_block);
1288 /* Now get the data according to the type. */
1292 /* If a string value is not enclosed in quotes, it consists of
1293 the rest of the current line, verbatim. Otherwise, string escapes
1296 A transport is specified as a string, which is then looked up in the
1297 list of transports. A search type is specified as one of a number of
1300 A set or rewrite rules for a driver is specified as a string, which is
1301 then parsed into a suitable chain of control blocks.
1303 Uids and gids are specified as strings which are then looked up in the
1304 passwd file. Lists of uids and gids are similarly specified as colon-
1305 separated strings. */
1310 case opt_expand_uid:
1311 case opt_expand_gid:
1316 reset_point = sptr = read_string(s, name);
1318 /* Having read a string, we now have several different ways of using it,
1319 depending on the data type, so do another switch. If keeping the actual
1320 string is not required (because it is interpreted), freesptr is set TRUE,
1321 and at the end we reset the pool. */
1325 /* If this was a string, set the variable to point to the new string,
1326 and set the flag so its store isn't reclaimed. If it was a list of rewrite
1327 rules, we still keep the string (for printing), and parse the rules into a
1328 control block and flags word. */
1332 if (data_block == NULL)
1333 *((uschar **)(ol->value)) = sptr;
1335 *((uschar **)((uschar *)data_block + (long int)(ol->value))) = sptr;
1337 if (type == opt_rewrite)
1342 rewrite_rule **chain;
1345 sprintf(CS name2, "*%.50s_rules", name);
1346 ol2 = find_option(name2, oltop, last);
1347 sprintf(CS name2, "*%.50s_flags", name);
1348 ol3 = find_option(name2, oltop, last);
1350 if (ol2 == NULL || ol3 == NULL)
1351 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1352 "rewrite rules not available for driver");
1354 if (data_block == NULL)
1356 chain = (rewrite_rule **)(ol2->value);
1357 flagptr = (int *)(ol3->value);
1361 chain = (rewrite_rule **)((uschar *)data_block + (long int)(ol2->value));
1362 flagptr = (int *)((uschar *)data_block + (long int)(ol3->value));
1365 while ((p = string_nextinlist(&sptr, &sep, big_buffer, BIG_BUFFER_SIZE))
1368 rewrite_rule *next = readconf_one_rewrite(p, flagptr, FALSE);
1370 chain = &(next->next);
1373 if ((*flagptr & (rewrite_all_envelope | rewrite_smtp)) != 0)
1374 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "rewrite rule specifies a "
1375 "non-header rewrite - not allowed at transport time -");
1379 /* If it was an expanded uid, see if there is any expansion to be
1380 done by checking for the presence of a $ character. If there is, save it
1381 in the corresponding *expand_user option field. Otherwise, fall through
1382 to treat it as a fixed uid. Ensure mutual exclusivity of the two kinds
1385 case opt_expand_uid:
1386 sprintf(CS name2, "*expand_%.50s", name);
1387 ol2 = find_option(name2, oltop, last);
1390 uschar *ss = (Ustrchr(sptr, '$') != NULL)? sptr : NULL;
1392 if (data_block == NULL)
1393 *((uschar **)(ol2->value)) = ss;
1395 *((uschar **)((uschar *)data_block + (long int)(ol2->value))) = ss;
1399 *(get_set_flag(name, oltop, last, data_block)) = FALSE;
1405 /* Look up a fixed uid, and also make use of the corresponding gid
1406 if a passwd entry is returned and the gid has not been set. */
1409 if (!route_finduser(sptr, &pw, &uid))
1410 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "user %s was not found", sptr);
1411 if (data_block == NULL)
1412 *((uid_t *)(ol->value)) = uid;
1414 *((uid_t *)((uschar *)data_block + (long int)(ol->value))) = uid;
1416 /* Set the flag indicating a fixed value is set */
1418 *(get_set_flag(name, oltop, last, data_block)) = TRUE;
1420 /* Handle matching gid if we have a passwd entry: done by finding the
1421 same name with terminating "user" changed to "group"; if not found,
1422 ignore. Also ignore if the value is already set. */
1424 if (pw == NULL) break;
1425 Ustrcpy(name+Ustrlen(name)-4, "group");
1426 ol2 = find_option(name, oltop, last);
1427 if (ol2 != NULL && ((ol2->type & opt_mask) == opt_gid ||
1428 (ol2->type & opt_mask) == opt_expand_gid))
1430 BOOL *set_flag = get_set_flag(name, oltop, last, data_block);
1433 if (data_block == NULL)
1434 *((gid_t *)(ol2->value)) = pw->pw_gid;
1436 *((gid_t *)((uschar *)data_block + (long int)(ol2->value))) = pw->pw_gid;
1442 /* If it was an expanded gid, see if there is any expansion to be
1443 done by checking for the presence of a $ character. If there is, save it
1444 in the corresponding *expand_user option field. Otherwise, fall through
1445 to treat it as a fixed gid. Ensure mutual exclusivity of the two kinds
1448 case opt_expand_gid:
1449 sprintf(CS name2, "*expand_%.50s", name);
1450 ol2 = find_option(name2, oltop, last);
1453 uschar *ss = (Ustrchr(sptr, '$') != NULL)? sptr : NULL;
1455 if (data_block == NULL)
1456 *((uschar **)(ol2->value)) = ss;
1458 *((uschar **)((uschar *)data_block + (long int)(ol2->value))) = ss;
1462 *(get_set_flag(name, oltop, last, data_block)) = FALSE;
1468 /* Handle freestanding gid */
1471 if (!route_findgroup(sptr, &gid))
1472 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "group %s was not found", sptr);
1473 if (data_block == NULL)
1474 *((gid_t *)(ol->value)) = gid;
1476 *((gid_t *)((uschar *)data_block + (long int)(ol->value))) = gid;
1477 *(get_set_flag(name, oltop, last, data_block)) = TRUE;
1480 /* If it was a uid list, look up each individual entry, and build
1481 a vector of uids, with a count in the first element. Put the vector
1482 in malloc store so we can free the string. (We are reading into
1483 permanent store already.) */
1492 if (*p != 0) count++;
1493 while (*p != 0) if (*p++ == ':') count++;
1494 list = store_malloc(count*sizeof(uid_t));
1495 list[ptr++] = (uid_t)(count - 1);
1497 if (data_block == NULL)
1498 *((uid_t **)(ol->value)) = list;
1500 *((uid_t **)((uschar *)data_block + (long int)(ol->value))) = list;
1506 (void)string_nextinlist(&p, &sep, big_buffer, BIG_BUFFER_SIZE);
1507 if (!route_finduser(big_buffer, NULL, &uid))
1508 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "user %s was not found",
1515 /* If it was a gid list, look up each individual entry, and build
1516 a vector of gids, with a count in the first element. Put the vector
1517 in malloc store so we can free the string. (We are reading into permanent
1527 if (*p != 0) count++;
1528 while (*p != 0) if (*p++ == ':') count++;
1529 list = store_malloc(count*sizeof(gid_t));
1530 list[ptr++] = (gid_t)(count - 1);
1532 if (data_block == NULL)
1533 *((gid_t **)(ol->value)) = list;
1535 *((gid_t **)((uschar *)data_block + (long int)(ol->value))) = list;
1541 (void)string_nextinlist(&p, &sep, big_buffer, BIG_BUFFER_SIZE);
1542 if (!route_findgroup(big_buffer, &gid))
1543 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "group %s was not found",
1551 /* Release store if the value of the string doesn't need to be kept. */
1553 if (freesptr) store_reset(reset_point);
1556 /* Expanded boolean: if no characters follow, or if there are no dollar
1557 characters, this is a fixed-valued boolean, and we fall through. Otherwise,
1558 save the string for later expansion in the alternate place. */
1560 case opt_expand_bool:
1561 if (*s != 0 && Ustrchr(s, '$') != 0)
1563 sprintf(CS name2, "*expand_%.50s", name);
1564 ol2 = find_option(name2, oltop, last);
1567 reset_point = sptr = read_string(s, name);
1568 if (data_block == NULL)
1569 *((uschar **)(ol2->value)) = sptr;
1571 *((uschar **)((uschar *)data_block + (long int)(ol2->value))) = sptr;
1578 /* Boolean: if no characters follow, the value is boolvalue. Otherwise
1579 look for yes/not/true/false. Some booleans are stored in a single bit in
1580 a single int. There's a special fudge for verify settings; without a suffix
1581 they set both xx_sender and xx_recipient. The table points to the sender
1582 value; search subsequently for the recipient. There's another special case:
1583 opt_bool_set also notes when a boolean has been set. */
1587 case opt_bool_verify:
1591 s = readconf_readname(name2, 64, s);
1592 if (strcmpic(name2, US"true") == 0 || strcmpic(name2, US"yes") == 0)
1594 else if (strcmpic(name2, US"false") == 0 || strcmpic(name2, US"no") == 0)
1596 else log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1597 "\"%s\" is not a valid value for the \"%s\" option", name2, name);
1598 if (*s != 0) extra_chars_error(s, string_sprintf("\"%s\" ", name2),
1599 US"for boolean option ", name);
1602 /* Handle single-bit type. */
1604 if (type == opt_bit)
1606 int bit = 1 << ((ol->type >> 16) & 31);
1607 int *ptr = (data_block == NULL)?
1608 (int *)(ol->value) :
1609 (int *)((uschar *)data_block + (long int)ol->value);
1610 if (boolvalue) *ptr |= bit; else *ptr &= ~bit;
1614 /* Handle full BOOL types */
1616 if (data_block == NULL)
1617 *((BOOL *)(ol->value)) = boolvalue;
1619 *((BOOL *)((uschar *)data_block + (long int)(ol->value))) = boolvalue;
1623 if (type == opt_bool_verify)
1625 sprintf(CS name2, "%.50s_recipient", name + offset);
1626 ol2 = find_option(name2, oltop, last);
1629 if (data_block == NULL)
1630 *((BOOL *)(ol2->value)) = boolvalue;
1632 *((BOOL *)((uschar *)data_block + (long int)(ol2->value))) = boolvalue;
1636 /* Note that opt_bool_set type is set, if there is somewhere to do so */
1638 else if (type == opt_bool_set)
1640 sprintf(CS name2, "*set_%.50s", name + offset);
1641 ol2 = find_option(name2, oltop, last);
1644 if (data_block == NULL)
1645 *((BOOL *)(ol2->value)) = TRUE;
1647 *((BOOL *)((uschar *)data_block + (long int)(ol2->value))) = TRUE;
1656 inttype = US"octal ";
1658 /* Integer: a simple(ish) case; allow octal and hex formats, and
1659 suffixes K and M. The different types affect output, not input. */
1666 value = strtol(CS s, CSS &endptr, intbase);
1669 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "%sinteger expected for %s",
1672 if (errno != ERANGE)
1674 if (tolower(*endptr) == 'k')
1676 if (value > INT_MAX/1024 || value < INT_MIN/1024) errno = ERANGE;
1680 else if (tolower(*endptr) == 'm')
1682 if (value > INT_MAX/(1024*1024) || value < INT_MIN/(1024*1024))
1684 else value *= 1024*1024;
1689 if (errno == ERANGE) log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1690 "absolute value of integer \"%s\" is too large (overflow)", s);
1692 while (isspace(*endptr)) endptr++;
1694 extra_chars_error(endptr, inttype, US"integer value for ", name);
1697 if (data_block == NULL)
1698 *((int *)(ol->value)) = value;
1700 *((int *)((uschar *)data_block + (long int)(ol->value))) = value;
1703 /* Integer held in K: again, allow octal and hex formats, and suffixes K and
1710 value = strtol(CS s, CSS &endptr, intbase);
1713 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "%sinteger expected for %s",
1716 if (errno != ERANGE)
1718 if (tolower(*endptr) == 'm')
1720 if (value > INT_MAX/1024 || value < INT_MIN/1024) errno = ERANGE;
1724 else if (tolower(*endptr) == 'k')
1730 value = (value + 512)/1024;
1734 if (errno == ERANGE) log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1735 "absolute value of integer \"%s\" is too large (overflow)", s);
1737 while (isspace(*endptr)) endptr++;
1739 extra_chars_error(endptr, inttype, US"integer value for ", name);
1742 if (data_block == NULL)
1743 *((int *)(ol->value)) = value;
1745 *((int *)((uschar *)data_block + (long int)(ol->value))) = value;
1748 /* Fixed-point number: held to 3 decimal places. */
1751 if (sscanf(CS s, "%d%n", &value, &count) != 1)
1752 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1753 "fixed-point number expected for %s", name);
1755 if (value < 0) log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1756 "integer \"%s\" is too large (overflow)", s);
1760 if (value < 0) log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1761 "integer \"%s\" is too large (overflow)", s);
1763 if (s[count] == '.')
1766 while (isdigit(s[++count]))
1768 value += (s[count] - '0') * d;
1773 while (isspace(s[count])) count++;
1776 extra_chars_error(s+count, US"fixed-point value for ", name, US"");
1778 if (data_block == NULL)
1779 *((int *)(ol->value)) = value;
1781 *((int *)((uschar *)data_block + (long int)(ol->value))) = value;
1784 /* There's a special routine to read time values. */
1787 value = readconf_readtime(s, 0, FALSE);
1789 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "invalid time value for %s",
1791 if (data_block == NULL)
1792 *((int *)(ol->value)) = value;
1794 *((int *)((uschar *)data_block + (long int)(ol->value))) = value;
1797 /* A time list is a list of colon-separated times, with the first
1798 element holding the size of the list and the second the number of
1804 int *list = (data_block == NULL)?
1805 (int *)(ol->value) :
1806 (int *)((uschar *)data_block + (long int)(ol->value));
1808 if (*s != 0) for (count = 1; count <= list[0] - 2; count++)
1811 uschar *snext = Ustrchr(s, ':');
1815 while (ss > s && isspace(ss[-1])) ss--;
1818 value = readconf_readtime(s, terminator, FALSE);
1820 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "invalid time value for %s",
1822 if (count > 1 && value <= list[count])
1823 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1824 "time value out of order for %s", name);
1825 list[count+1] = value;
1826 if (snext == NULL) break;
1828 while (isspace(*s)) s++;
1831 if (count > list[0] - 2)
1832 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "too many time values for %s",
1834 if (count > 0 && list[2] == 0) count = 0;
1846 /*************************************************
1847 * Print a time value *
1848 *************************************************/
1851 Argument: a time value in seconds
1852 Returns: pointer to a fixed buffer containing the time as a string,
1853 in readconf_readtime() format
1857 readconf_printtime(int t)
1860 uschar *p = time_buffer;
1871 if (w > 0) { sprintf(CS p, "%dw", w); while (*p) p++; }
1872 if (d > 0) { sprintf(CS p, "%dd", d); while (*p) p++; }
1873 if (h > 0) { sprintf(CS p, "%dh", h); while (*p) p++; }
1874 if (m > 0) { sprintf(CS p, "%dm", m); while (*p) p++; }
1875 if (s > 0 || p == time_buffer) sprintf(CS p, "%ds", s);
1882 /*************************************************
1883 * Print an individual option value *
1884 *************************************************/
1886 /* This is used by the -bP option, so prints to the standard output.
1887 The entire options list is passed in as an argument, because some options come
1888 in pairs - typically uid/gid settings, which can either be explicit numerical
1889 values, or strings to be expanded later. If the numerical value is unset,
1890 search for "*expand_<name>" to see if there is a string equivalent.
1893 ol option entry, or NULL for an unknown option
1895 options_block NULL for main configuration options; otherwise points to
1896 a driver block; if the option doesn't have opt_public
1897 set, then options_block->options_block is where the item
1899 oltop points to the option list in which ol exists
1900 last one more than the offset of the last entry in optop
1906 print_ol(optionlist *ol, uschar *name, void *options_block,
1907 optionlist *oltop, int last)
1920 printf("%s is not a known option\n", name);
1924 /* Non-admin callers cannot see options that have been flagged secure by the
1927 if (!admin_user && (ol->type & opt_secure) != 0)
1929 printf("%s = <value not displayable>\n", name);
1933 /* Else show the value of the option */
1936 if (options_block != NULL)
1938 if ((ol->type & opt_public) == 0)
1939 options_block = (void *)(((driver_instance *)options_block)->options_block);
1940 value = (void *)((uschar *)options_block + (long int)value);
1943 switch(ol->type & opt_mask)
1946 case opt_rewrite: /* Show the text value */
1947 s = *((uschar **)value);
1948 printf("%s = %s\n", name, (s == NULL)? US"" : string_printing2(s, FALSE));
1952 printf("%s = %d\n", name, *((int *)value));
1957 int x = *((int *)value);
1958 if (x != 0 && (x & 1023) == 0)
1962 if ((x & 1023) == 0)
1967 printf("%s = %d%c\n", name, x, c);
1969 else printf("%s = %d\n", name, x);
1975 int x = *((int *)value);
1976 if (x == 0) printf("%s = 0\n", name);
1977 else if ((x & 1023) == 0) printf("%s = %dM\n", name, x >> 10);
1978 else printf("%s = %dK\n", name, x);
1983 printf("%s = %#o\n", name, *((int *)value));
1986 /* Can be negative only when "unset", in which case integer */
1990 int x = *((int *)value);
1993 if (x < 0) printf("%s =\n", name); else
1995 printf("%s = %d.", name, x/1000);
2008 /* If the numerical value is unset, try for the string value */
2010 case opt_expand_uid:
2011 if (! *get_set_flag(name, oltop, last, options_block))
2013 sprintf(CS name2, "*expand_%.50s", name);
2014 ol2 = find_option(name2, oltop, last);
2017 void *value2 = ol2->value;
2018 if (options_block != NULL)
2019 value2 = (void *)((uschar *)options_block + (long int)value2);
2020 s = *((uschar **)value2);
2021 printf("%s = %s\n", name, (s == NULL)? US"" : string_printing(s));
2026 /* Else fall through */
2029 if (! *get_set_flag(name, oltop, last, options_block))
2030 printf("%s =\n", name);
2033 pw = getpwuid(*((uid_t *)value));
2035 printf("%s = %ld\n", name, (long int)(*((uid_t *)value)));
2036 else printf("%s = %s\n", name, pw->pw_name);
2040 /* If the numerical value is unset, try for the string value */
2042 case opt_expand_gid:
2043 if (! *get_set_flag(name, oltop, last, options_block))
2045 sprintf(CS name2, "*expand_%.50s", name);
2046 ol2 = find_option(name2, oltop, last);
2047 if (ol2 != NULL && (ol2->type & opt_mask) == opt_stringptr)
2049 void *value2 = ol2->value;
2050 if (options_block != NULL)
2051 value2 = (void *)((uschar *)options_block + (long int)value2);
2052 s = *((uschar **)value2);
2053 printf("%s = %s\n", name, (s == NULL)? US"" : string_printing(s));
2058 /* Else fall through */
2061 if (! *get_set_flag(name, oltop, last, options_block))
2062 printf("%s =\n", name);
2065 gr = getgrgid(*((int *)value));
2067 printf("%s = %ld\n", name, (long int)(*((int *)value)));
2068 else printf("%s = %s\n", name, gr->gr_name);
2073 uidlist = *((uid_t **)value);
2074 printf("%s =", name);
2075 if (uidlist != NULL)
2079 for (i = 1; i <= (int)(uidlist[0]); i++)
2081 uschar *name = NULL;
2082 pw = getpwuid(uidlist[i]);
2083 if (pw != NULL) name = US pw->pw_name;
2084 if (name != NULL) printf("%c%s", sep, name);
2085 else printf("%c%ld", sep, (long int)(uidlist[i]));
2093 gidlist = *((gid_t **)value);
2094 printf("%s =", name);
2095 if (gidlist != NULL)
2099 for (i = 1; i <= (int)(gidlist[0]); i++)
2101 uschar *name = NULL;
2102 gr = getgrgid(gidlist[i]);
2103 if (gr != NULL) name = US gr->gr_name;
2104 if (name != NULL) printf("%c%s", sep, name);
2105 else printf("%c%ld", sep, (long int)(gidlist[i]));
2113 printf("%s = %s\n", name, readconf_printtime(*((int *)value)));
2119 int *list = (int *)value;
2120 printf("%s = ", name);
2121 for (i = 0; i < list[1]; i++)
2122 printf("%s%s", (i == 0)? "" : ":", readconf_printtime(list[i+2]));
2128 printf("%s%s\n", ((*((int *)value)) & (1 << ((ol->type >> 16) & 31)))?
2132 case opt_expand_bool:
2133 sprintf(CS name2, "*expand_%.50s", name);
2134 ol2 = find_option(name2, oltop, last);
2135 if (ol2 != NULL && ol2->value != NULL)
2137 void *value2 = ol2->value;
2138 if (options_block != NULL)
2139 value2 = (void *)((uschar *)options_block + (long int)value2);
2140 s = *((uschar **)value2);
2143 printf("%s = %s\n", name, string_printing(s));
2146 /* s == NULL => string not set; fall through */
2152 case opt_bool_verify:
2154 printf("%s%s\n", (*((BOOL *)value))? "" : "no_", name);
2161 /*************************************************
2162 * Print value from main configuration *
2163 *************************************************/
2165 /* This function, called as a result of encountering the -bP option,
2166 causes the value of any main configuration variable to be output if the
2167 second argument is NULL. There are some special values:
2169 all print all main configuration options
2170 configure_file print the name of the configuration file
2171 routers print the routers' configurations
2172 transports print the transports' configuration
2173 authenticators print the authenticators' configuration
2174 router_list print a list of router names
2175 transport_list print a list of transport names
2176 authenticator_list print a list of authentication mechanism names
2177 +name print a named list item
2178 local_scan print the local_scan options
2180 If the second argument is not NULL, it must be one of "router", "transport", or
2181 "authenticator" in which case the first argument identifies the driver whose
2182 options are to be printed.
2185 name option name if type == NULL; else driver name
2186 type NULL or driver type name, as described above
2192 readconf_print(uschar *name, uschar *type)
2194 BOOL names_only = FALSE;
2196 optionlist *ol2 = NULL;
2197 driver_instance *d = NULL;
2207 static uschar *types[] = { US"address", US"domain", US"host",
2209 static tree_node **anchors[] = { &addresslist_anchor, &domainlist_anchor,
2210 &hostlist_anchor, &localpartlist_anchor };
2212 for (i = 0; i < 4; i++)
2214 t = tree_search(*(anchors[i]), name+1);
2218 printf("%slist %s = %s\n", types[i], name+1,
2219 ((namedlist_block *)(t->data.ptr))->string);
2224 printf("no address, domain, host, or local part list called \"%s\" "
2225 "exists\n", name+1);
2230 if (Ustrcmp(name, "configure_file") == 0)
2232 printf("%s\n", CS config_main_filename);
2236 if (Ustrcmp(name, "all") == 0)
2238 for (ol = optionlist_config;
2239 ol < optionlist_config + optionlist_config_size; ol++)
2241 if ((ol->type & opt_hidden) == 0)
2242 print_ol(ol, US ol->name, NULL, optionlist_config, optionlist_config_size);
2247 if (Ustrcmp(name, "local_scan") == 0)
2249 #ifndef LOCAL_SCAN_HAS_OPTIONS
2250 printf("local_scan() options are not supported\n");
2252 for (ol = local_scan_options;
2253 ol < local_scan_options + local_scan_options_count; ol++)
2255 print_ol(ol, US ol->name, NULL, local_scan_options,
2256 local_scan_options_count);
2262 if (Ustrcmp(name, "routers") == 0)
2267 else if (Ustrcmp(name, "transports") == 0)
2269 type = US"transport";
2273 else if (Ustrcmp(name, "authenticators") == 0)
2275 type = US"authenticator";
2279 else if (Ustrcmp(name, "authenticator_list") == 0)
2281 type = US"authenticator";
2286 else if (Ustrcmp(name, "router_list") == 0)
2292 else if (Ustrcmp(name, "transport_list") == 0)
2294 type = US"transport";
2300 print_ol(find_option(name, optionlist_config, optionlist_config_size),
2301 name, NULL, optionlist_config, optionlist_config_size);
2306 /* Handle the options for a router or transport. Skip options that are flagged
2307 as hidden. Some of these are options with names starting with '*', used for
2308 internal alternative representations of other options (which the printing
2309 function will sort out). Others are synonyms kept for backward compatibility.
2312 if (Ustrcmp(type, "router") == 0)
2314 d = (driver_instance *)routers;
2315 ol2 = optionlist_routers;
2316 size = optionlist_routers_size;
2318 else if (Ustrcmp(type, "transport") == 0)
2320 d = (driver_instance *)transports;
2321 ol2 = optionlist_transports;
2322 size = optionlist_transports_size;
2324 else if (Ustrcmp(type, "authenticator") == 0)
2326 d = (driver_instance *)auths;
2327 ol2 = optionlist_auths;
2328 size = optionlist_auths_size;
2333 for (; d != NULL; d = d->next) printf("%s\n", CS d->name);
2337 /* Either search for a given driver, or print all of them */
2339 for (; d != NULL; d = d->next)
2342 printf("\n%s %s:\n", d->name, type);
2343 else if (Ustrcmp(d->name, name) != 0) continue;
2345 for (ol = ol2; ol < ol2 + size; ol++)
2347 if ((ol->type & opt_hidden) == 0)
2348 print_ol(ol, US ol->name, d, ol2, size);
2351 for (ol = d->info->options;
2352 ol < d->info->options + *(d->info->options_count); ol++)
2354 if ((ol->type & opt_hidden) == 0)
2355 print_ol(ol, US ol->name, d, d->info->options, *(d->info->options_count));
2357 if (name != NULL) return;
2359 if (name != NULL) printf("%s %s not found\n", type, name);
2364 /*************************************************
2365 * Read a named list item *
2366 *************************************************/
2368 /* This function reads a name and a list (i.e. string). The name is used to
2369 save the list in a tree, sorted by its name. Each entry also has a number,
2370 which can be used for caching tests, but if the string contains any expansion
2371 items other than $key, the number is set negative to inhibit caching. This
2372 mechanism is used for domain, host, and address lists that are referenced by
2376 anchorp points to the tree anchor
2377 numberp points to the current number for this tree
2378 max the maximum number permitted
2379 s the text of the option line, starting immediately after the name
2381 tname the name of the list type, for messages
2387 read_named_list(tree_node **anchorp, int *numberp, int max, uschar *s,
2390 BOOL forcecache = FALSE;
2393 namedlist_block *nb = store_get(sizeof(namedlist_block));
2395 if (Ustrncmp(s, "_cache", 6) == 0)
2402 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "unrecognized configuration line");
2404 if (*numberp >= max)
2405 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "too many named %ss (max is %d)\n",
2408 while (isspace(*s)) s++;
2410 while (isalnum(*s) || *s == '_') s++;
2411 t = store_get(sizeof(tree_node) + s-ss);
2412 Ustrncpy(t->name, ss, s-ss);
2414 while (isspace(*s)) s++;
2416 if (!tree_insertnode(anchorp, t))
2417 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
2418 "duplicate name \"%s\" for a named %s", t->name, tname);
2421 nb->number = *numberp;
2424 if (*s++ != '=') log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
2425 "missing '=' after \"%s\"", t->name);
2426 while (isspace(*s)) s++;
2427 nb->string = read_string(s, t->name);
2428 nb->cache_data = NULL;
2430 /* Check the string for any expansions; if any are found, mark this list
2431 uncacheable unless the user has explicited forced caching. */
2433 if (!forcecache && Ustrchr(nb->string, '$') != NULL) nb->number = -1;
2439 /*************************************************
2440 * Unpick data for a rate limit *
2441 *************************************************/
2443 /* This function is called to unpick smtp_ratelimit_{mail,rcpt} into four
2447 s string, in the form t,b,f,l
2448 where t is the threshold (integer)
2449 b is the initial delay (time)
2450 f is the multiplicative factor (fixed point)
2451 k is the maximum time (time)
2452 threshold where to store threshold
2453 base where to store base in milliseconds
2454 factor where to store factor in milliseconds
2455 limit where to store limit
2457 Returns: nothing (panics on error)
2461 unpick_ratelimit(uschar *s, int *threshold, int *base, double *factor,
2464 uschar bstring[16], lstring[16];
2466 if (sscanf(CS s, "%d, %15[0123456789smhdw.], %lf, %15s", threshold, bstring,
2467 factor, lstring) == 4)
2469 *base = readconf_readtime(bstring, 0, TRUE);
2470 *limit = readconf_readtime(lstring, 0, TRUE);
2471 if (*base >= 0 && *limit >= 0) return;
2473 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "malformed ratelimit data: %s", s);
2479 /*************************************************
2480 * Read main configuration options *
2481 *************************************************/
2483 /* This function is the first to be called for configuration reading. It
2484 opens the configuration file and reads general configuration settings until
2485 it reaches the end of the configuration section. The file is then left open so
2486 that the remaining configuration data can subsequently be read if needed for
2489 The configuration file must be owned either by root or exim, and be writeable
2490 only by root or uid/gid exim. The values for Exim's uid and gid can be changed
2491 in the config file, so the test is done on the compiled in values. A slight
2492 anomaly, to be carefully documented.
2494 The name of the configuration file is taken from a list that is included in the
2495 binary of Exim. It can be altered from the command line, but if that is done,
2496 root privilege is immediately withdrawn unless the caller is root or exim.
2497 The first file on the list that exists is used.
2499 For use on multiple systems that share file systems, first look for a
2500 configuration file whose name has the current node name on the end. If that is
2501 not found, try the generic name. For really contorted configurations, that run
2502 multiple Exims with different uid settings, first try adding the effective uid
2503 before the node name. These complications are going to waste resources on most
2504 systems. Therefore they are available only when requested by compile-time
2511 struct stat statbuf;
2512 uschar *s, *filename;
2513 uschar *list = config_main_filelist;
2515 /* Loop through the possible file names */
2517 while((filename = string_nextinlist(&list, &sep, big_buffer, big_buffer_size))
2520 /* Cut out all the fancy processing unless specifically wanted */
2522 #if defined(CONFIGURE_FILE_USE_NODE) || defined(CONFIGURE_FILE_USE_EUID)
2523 uschar *suffix = filename + Ustrlen(filename);
2525 /* Try for the node-specific file if a node name exists */
2527 #ifdef CONFIGURE_FILE_USE_NODE
2529 if (uname(&uts) >= 0)
2531 #ifdef CONFIGURE_FILE_USE_EUID
2532 sprintf(CS suffix, ".%ld.%.256s", (long int)original_euid, uts.nodename);
2533 config_file = Ufopen(filename, "rb");
2534 if (config_file == NULL)
2535 #endif /* CONFIGURE_FILE_USE_EUID */
2537 sprintf(CS suffix, ".%.256s", uts.nodename);
2538 config_file = Ufopen(filename, "rb");
2541 #endif /* CONFIGURE_FILE_USE_NODE */
2543 /* Otherwise, try the generic name, possibly with the euid added */
2545 #ifdef CONFIGURE_FILE_USE_EUID
2546 if (config_file == NULL)
2548 sprintf(CS suffix, ".%ld", (long int)original_euid);
2549 config_file = Ufopen(filename, "rb");
2551 #endif /* CONFIGURE_FILE_USE_EUID */
2553 /* Finally, try the unadorned name */
2555 if (config_file == NULL)
2558 config_file = Ufopen(filename, "rb");
2560 #else /* if neither defined */
2562 /* This is the common case when the fancy processing is not included. */
2564 config_file = Ufopen(filename, "rb");
2567 /* If the file does not exist, continue to try any others. For any other
2568 error, break out (and die). */
2570 if (config_file != NULL || errno != ENOENT) break;
2573 /* On success, save the name for verification; config_filename is used when
2574 logging configuration errors (it changes for .included files) whereas
2575 config_main_filename is the name shown by -bP. Failure to open a configuration
2576 file is a serious disaster. */
2578 if (config_file != NULL)
2580 config_filename = config_main_filename = string_copy(filename);
2584 if (filename == NULL)
2585 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "non-existent configuration file(s): "
2586 "%s", config_main_filelist);
2588 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "%s", string_open_failed(errno,
2589 "configuration file %s", filename));
2592 /* Check the status of the file we have opened, unless it was specified on
2593 the command line, in which case privilege was given away at the start. */
2595 if (!config_changed)
2597 if (fstat(fileno(config_file), &statbuf) != 0)
2598 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "failed to stat configuration file %s",
2601 if ((statbuf.st_uid != root_uid && /* owner not root */
2602 statbuf.st_uid != exim_uid /* owner not exim */
2603 #ifdef CONFIGURE_OWNER
2604 && statbuf.st_uid != config_uid /* owner not the special one */
2607 (statbuf.st_gid != exim_gid /* group not exim & */
2608 #ifdef CONFIGURE_GROUP
2609 && statbuf.st_gid != config_gid /* group not the special one */
2611 && (statbuf.st_mode & 020) != 0) || /* group writeable */
2613 ((statbuf.st_mode & 2) != 0)) /* world writeable */
2615 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "Exim configuration file %s has the "
2616 "wrong owner, group, or mode", big_buffer);
2619 /* Process the main configuration settings. They all begin with a lower case
2620 letter. If we see something starting with an upper case letter, it is taken as
2621 a macro definition. */
2623 while ((s = get_config_line()) != NULL)
2628 macro_item *mlast = NULL;
2632 while (isalnum(*s) || *s == '_')
2634 if (namelen >= sizeof(name) - 1)
2635 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
2636 "macro name too long (maximum is %d characters)", sizeof(name) - 1);
2637 name[namelen++] = *s++;
2640 while (isspace(*s)) s++;
2641 if (*s++ != '=') log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
2642 "malformed macro definition");
2643 while (isspace(*s)) s++;
2645 /* If an existing macro of the same name was defined on the command line,
2646 we just skip this definition. Otherwise it's an error to attempt to
2647 redefine a macro. It is also an error to define a macro whose name begins
2648 with the name of a previously-defined macro. */
2650 for (m = macros; m != NULL; m = m->next)
2652 int len = Ustrlen(m->name);
2654 if (Ustrcmp(m->name, name) == 0)
2656 if (m->command_line) break;
2657 log_write(0, LOG_CONFIG|LOG_PANIC_DIE, "macro \"%s\" is already "
2661 if (len < namelen && Ustrstr(name, m->name) != NULL)
2662 log_write(0, LOG_CONFIG|LOG_PANIC_DIE, "\"%s\" cannot be defined as "
2663 "a macro because previously defined macro \"%s\" is a substring",
2668 if (m != NULL) continue; /* Found an overriding command-line definition */
2670 m = store_get(sizeof(macro_item) + namelen);
2672 m->command_line = FALSE;
2673 if (mlast == NULL) macros = m; else mlast->next = m;
2675 /* This use of strcpy() is OK because we have obtained a block of store
2676 whose size is based on the length of "name". The definition of the
2677 macro_item structure includes a final vector called "name" which is one
2678 byte long. Thus, adding "namelen" gives us enough room to store the "name"
2681 Ustrcpy(m->name, name);
2682 m->replacement = string_copy(s);
2685 else if (Ustrncmp(s, "domainlist", 10) == 0)
2686 read_named_list(&domainlist_anchor, &domainlist_count,
2687 MAX_NAMED_LIST, s+10, US"domain list");
2689 else if (Ustrncmp(s, "hostlist", 8) == 0)
2690 read_named_list(&hostlist_anchor, &hostlist_count,
2691 MAX_NAMED_LIST, s+8, US"host list");
2693 else if (Ustrncmp(s, US"addresslist", 11) == 0)
2694 read_named_list(&addresslist_anchor, &addresslist_count,
2695 MAX_NAMED_LIST, s+11, US"address list");
2697 else if (Ustrncmp(s, US"localpartlist", 13) == 0)
2698 read_named_list(&localpartlist_anchor, &localpartlist_count,
2699 MAX_NAMED_LIST, s+13, US"local part list");
2702 (void) readconf_handle_option(s, optionlist_config, optionlist_config_size,
2703 NULL, US"main option \"%s\" unknown");
2707 /* If local_sender_retain is set, local_from_check must be unset. */
2709 if (local_sender_retain && local_from_check)
2710 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "both local_from_check and "
2711 "local_sender_retain are set; this combination is not allowed");
2713 /* If the timezone string is empty, set it to NULL, implying no TZ variable
2716 if (timezone_string != NULL && *timezone_string == 0) timezone_string = NULL;
2718 /* remote_max_parallel must be > 0 */
2720 if (remote_max_parallel <= 0) remote_max_parallel = 1;
2722 /* The primary host name may be required for expansion of spool_directory
2723 and log_file_path, so make sure it is set asap. It is obtained from uname(),
2724 but if that yields an unqualified value, make a FQDN by using gethostbyname to
2725 canonize it. Some people like upper case letters in their host names, so we
2726 don't force the case. */
2728 if (primary_hostname == NULL)
2732 if (uname(&uts) < 0)
2733 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "uname() failed to yield host name");
2734 hostname = US uts.nodename;
2736 if (Ustrchr(hostname, '.') == NULL)
2739 struct hostent *hostdata;
2742 if (dns_ipv4_lookup == NULL ||
2743 match_isinlist(hostname, &dns_ipv4_lookup, 0, NULL, NULL, MCL_DOMAIN,
2753 #if HAVE_GETIPNODEBYNAME
2755 hostdata = getipnodebyname(CS hostname, af, 0, &error_num);
2757 hostdata = gethostbyname2(CS hostname, af);
2760 hostdata = gethostbyname(CS hostname);
2763 if (hostdata != NULL)
2765 hostname = US hostdata->h_name;
2769 if (af == AF_INET) break;
2774 primary_hostname = string_copy(hostname);
2777 /* Set up default value for smtp_active_hostname */
2779 smtp_active_hostname = primary_hostname;
2781 /* If spool_directory wasn't set in the build-time configuration, it must have
2782 got set above. Of course, writing to the log may not work if log_file_path is
2783 not set, but it will at least get to syslog or somewhere, with any luck. */
2785 if (*spool_directory == 0)
2786 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "spool_directory undefined: cannot "
2789 /* Expand the spool directory name; it may, for example, contain the primary
2790 host name. Same comment about failure. */
2792 s = expand_string(spool_directory);
2794 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "failed to expand spool_directory "
2795 "\"%s\": %s", spool_directory, expand_string_message);
2796 spool_directory = s;
2798 /* Expand log_file_path, which must contain "%s" in any component that isn't
2799 the null string or "syslog". It is also allowed to contain one instance of %D.
2800 However, it must NOT contain % followed by anything else. */
2802 if (*log_file_path != 0)
2805 int sep = ':'; /* Fixed for log file path */
2806 s = expand_string(log_file_path);
2808 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "failed to expand log_file_path "
2809 "\"%s\": %s", log_file_path, expand_string_message);
2812 while ((sss = string_nextinlist(&ss,&sep,big_buffer,big_buffer_size)) != NULL)
2815 if (sss[0] == 0 || Ustrcmp(sss, "syslog") == 0) continue;
2816 t = Ustrstr(sss, "%s");
2818 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "log_file_path \"%s\" does not "
2819 "contain \"%%s\"", sss);
2821 t = Ustrchr(sss, '%');
2824 if (t[1] != 'D' || Ustrchr(t+2, '%') != NULL)
2825 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "log_file_path \"%s\" contains "
2826 "unexpected \"%%\" character", s);
2833 /* Interpret syslog_facility into an integer argument for 'ident' param to
2834 openlog(). Default is LOG_MAIL set in globals.c. Allow the user to omit the
2837 if (syslog_facility_str != NULL)
2840 uschar *s = syslog_facility_str;
2842 if ((Ustrlen(syslog_facility_str) >= 4) &&
2843 (strncmpic(syslog_facility_str, US"log_", 4) == 0))
2846 for (i = 0; i < syslog_list_size; i++)
2848 if (strcmpic(s, syslog_list[i].name) == 0)
2850 syslog_facility = syslog_list[i].value;
2855 if (i >= syslog_list_size)
2857 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
2858 "failed to interpret syslog_facility \"%s\"", syslog_facility_str);
2862 /* Expand pid_file_path */
2864 if (*pid_file_path != 0)
2866 s = expand_string(pid_file_path);
2868 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "failed to expand pid_file_path "
2869 "\"%s\": %s", pid_file_path, expand_string_message);
2873 /* Compile the regex for matching a UUCP-style "From_" line in an incoming
2876 regex_From = regex_must_compile(uucp_from_pattern, FALSE, TRUE);
2878 /* Unpick the SMTP rate limiting options, if set */
2880 if (smtp_ratelimit_mail != NULL)
2882 unpick_ratelimit(smtp_ratelimit_mail, &smtp_rlm_threshold,
2883 &smtp_rlm_base, &smtp_rlm_factor, &smtp_rlm_limit);
2886 if (smtp_ratelimit_rcpt != NULL)
2888 unpick_ratelimit(smtp_ratelimit_rcpt, &smtp_rlr_threshold,
2889 &smtp_rlr_base, &smtp_rlr_factor, &smtp_rlr_limit);
2892 /* The qualify domains default to the primary host name */
2894 if (qualify_domain_sender == NULL)
2895 qualify_domain_sender = primary_hostname;
2896 if (qualify_domain_recipient == NULL)
2897 qualify_domain_recipient = qualify_domain_sender;
2899 /* Setting system_filter_user in the configuration sets the gid as well if a
2900 name is given, but a numerical value does not. */
2902 if (system_filter_uid_set && !system_filter_gid_set)
2904 struct passwd *pw = getpwuid(system_filter_uid);
2906 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "Failed to look up uid %ld",
2907 (long int)system_filter_uid);
2908 system_filter_gid = pw->pw_gid;
2909 system_filter_gid_set = TRUE;
2912 /* If the errors_reply_to field is set, check that it is syntactically valid
2913 and ensure it contains a domain. */
2915 if (errors_reply_to != NULL)
2918 int start, end, domain;
2919 uschar *recipient = parse_extract_address(errors_reply_to, &errmess,
2920 &start, &end, &domain, FALSE);
2922 if (recipient == NULL)
2923 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
2924 "error in errors_reply_to (%s): %s", errors_reply_to, errmess);
2927 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
2928 "errors_reply_to (%s) does not contain a domain", errors_reply_to);
2931 /* If smtp_accept_queue or smtp_accept_max_per_host is set, then
2932 smtp_accept_max must also be set. */
2934 if (smtp_accept_max == 0 &&
2935 (smtp_accept_queue > 0 || smtp_accept_max_per_host != NULL))
2936 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
2937 "smtp_accept_max must be set if smtp_accept_queue or "
2938 "smtp_accept_max_per_host is set");
2940 /* Set up the host number if anything is specified. It is an expanded string
2941 so that it can be computed from the host name, for example. We do this last
2942 so as to ensure that everything else is set up before the expansion. */
2944 if (host_number_string != NULL)
2947 uschar *s = expand_string(host_number_string);
2948 long int n = Ustrtol(s, &end, 0);
2949 while (isspace(*end)) end++;
2951 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
2952 "localhost_number value is not a number: %s", s);
2953 if (n > LOCALHOST_MAX)
2954 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
2955 "localhost_number is greater than the maximum allowed value (%d)",
2961 /* If tls_verify_hosts is set, tls_verify_certificates must also be set */
2963 if ((tls_verify_hosts != NULL || tls_try_verify_hosts != NULL) &&
2964 tls_verify_certificates == NULL)
2965 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
2966 "tls_%sverify_hosts is set, but tls_verify_certificates is not set",
2967 (tls_verify_hosts != NULL)? "" : "try_");
2973 /*************************************************
2974 * Initialize one driver *
2975 *************************************************/
2977 /* This is called once the driver's generic options, if any, have been read.
2978 We can now find the driver, set up defaults for the private options, and
2979 unset any "set" bits in the private options table (which might have been
2980 set by another incarnation of the same driver).
2983 d pointer to driver instance block, with generic
2985 drivers_available vector of available drivers
2986 size_of_info size of each block in drivers_available
2987 class class of driver, for error message
2989 Returns: pointer to the driver info block
2992 static driver_info *
2993 init_driver(driver_instance *d, driver_info *drivers_available,
2994 int size_of_info, uschar *class)
2998 for (dd = drivers_available; dd->driver_name[0] != 0;
2999 dd = (driver_info *)(((uschar *)dd) + size_of_info))
3001 if (Ustrcmp(d->driver_name, dd->driver_name) == 0)
3004 int len = dd->options_len;
3006 d->options_block = store_get(len);
3007 memcpy(d->options_block, dd->options_block, len);
3008 for (i = 0; i < *(dd->options_count); i++)
3009 dd->options[i].type &= ~opt_set;
3014 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
3015 "%s %s: cannot find %s driver \"%s\"", class, d->name, class, d->driver_name);
3017 return NULL; /* never obeyed */
3023 /*************************************************
3024 * Initialize driver list *
3025 *************************************************/
3027 /* This function is called for routers, transports, and authentication
3028 mechanisms. It reads the data from the current point in the configuration file
3029 up to the end of the section, and sets up a chain of instance blocks according
3030 to the file's contents. The file will already have been opened by a call to
3031 readconf_main, and must be left open for subsequent reading of further data.
3033 Any errors cause a panic crash. Note that the blocks with names driver_info and
3034 driver_instance must map the first portions of all the _info and _instance
3035 blocks for this shared code to work.
3038 class "router", "transport", or "authenticator"
3039 anchor &routers, &transports, &auths
3040 drivers_available available drivers
3041 size_of_info size of each info block
3042 instance_default points to default data for an instance
3043 instance_size size of instance block
3044 driver_optionlist generic option list
3045 driver_optionlist_count count of generic option list
3051 readconf_driver_init(
3053 driver_instance **anchor,
3054 driver_info *drivers_available,
3056 void *instance_default,
3058 optionlist *driver_optionlist,
3059 int driver_optionlist_count)
3061 driver_instance **p = anchor;
3062 driver_instance *d = NULL;
3065 /* Now process the configuration lines */
3067 while ((buffer = get_config_line()) != NULL)
3071 /* Read the first name on the line and test for the start of a new driver.
3072 If this isn't the start of a new driver, the line will be re-read. */
3074 uschar *s = readconf_readname(name, sizeof(name), buffer);
3076 /* If the line starts with a name terminated by a colon, we are at the
3077 start of the definition of a new driver. The rest of the line must be
3084 /* Finish off initializing the previous driver. */
3088 if (d->driver_name == NULL)
3089 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
3090 "no driver defined for %s \"%s\"", class, d->name);
3094 /* Check that we haven't already got a driver of this name */
3096 for (d = *anchor; d != NULL; d = d->next)
3097 if (Ustrcmp(name, d->name) == 0)
3098 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
3099 "there are two %ss called \"%s\"", class, name);
3101 /* Set up a new driver instance data block on the chain, with
3102 its default values installed. */
3104 d = store_get(instance_size);
3105 memcpy(d, instance_default, instance_size);
3108 d->name = string_copy(name);
3110 /* Clear out the "set" bits in the generic options */
3112 for (i = 0; i < driver_optionlist_count; i++)
3113 driver_optionlist[i].type &= ~opt_set;
3115 /* Check nothing more on this line, then do the next loop iteration. */
3117 while (isspace(*s)) s++;
3118 if (*s != 0) extra_chars_error(s, US"driver name ", name, US"");
3122 /* Give an error if we have not set up a current driver yet. */
3124 if (d == NULL) log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
3125 "%s name missing", class);
3127 /* First look to see if this is a generic option; if it is "driver",
3128 initialize the driver. If is it not a generic option, we can look for a
3129 private option provided that the driver has been previously set up. */
3131 if (readconf_handle_option(buffer, driver_optionlist,
3132 driver_optionlist_count, d, NULL))
3134 if (d->info == NULL && d->driver_name != NULL)
3135 init_driver(d, drivers_available, size_of_info, class);
3138 /* Handle private options - pass the generic block because some may
3139 live therein. A flag with each option indicates if it is in the public
3142 else if (d->info != NULL)
3144 readconf_handle_option(buffer, d->info->options,
3145 *(d->info->options_count), d, US"option \"%s\" unknown");
3148 /* The option is not generic and the driver name has not yet been given. */
3150 else log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "option \"%s\" unknown "
3151 "(\"driver\" must be specified before any private options)", name);
3154 /* Run the initialization function for the final driver. */
3158 if (d->driver_name == NULL)
3159 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
3160 "no driver defined for %s \"%s\"", class, d->name);
3167 /*************************************************
3168 * Check driver dependency *
3169 *************************************************/
3171 /* This function is passed a driver instance and a string. It checks whether
3172 any of the string options for the driver contains the given string as an
3176 d points to a driver instance block
3177 s the string to search for
3179 Returns: TRUE if a dependency is found
3183 readconf_depends(driver_instance *d, uschar *s)
3185 int count = *(d->info->options_count);
3189 for (ol = d->info->options; ol < d->info->options + count; ol++)
3191 void *options_block;
3193 int type = ol->type & opt_mask;
3194 if (type != opt_stringptr) continue;
3195 options_block = ((ol->type & opt_public) == 0)? d->options_block : (void *)d;
3196 value = *(uschar **)((uschar *)options_block + (long int)(ol->value));
3197 if (value != NULL && (ss = Ustrstr(value, s)) != NULL)
3199 if (ss <= value || (ss[-1] != '$' && ss[-1] != '{') ||
3200 isalnum(ss[Ustrlen(s)])) continue;
3201 DEBUG(D_transport) debug_printf("driver %s: \"%s\" option depends on %s\n",
3202 d->name, ol->name, s);
3207 DEBUG(D_transport) debug_printf("driver %s does not depend on %s\n", d->name, s);
3214 /*************************************************
3215 * Decode an error type for retries *
3216 *************************************************/
3218 /* This function is global because it is also called from the main
3219 program when testing retry information. It decodes strings such as "quota_7d"
3220 into numerical error codes.
3223 pp points to start of text
3224 p points past end of text
3225 basic_errno points to an int to receive the main error number
3226 more_errno points to an int to receive the secondary error data
3228 Returns: NULL if decoded correctly; else points to error text
3232 readconf_retry_error(uschar *pp, uschar *p, int *basic_errno, int *more_errno)
3236 while (q < p && *q != '_') q++;
3239 if (len == 5 && strncmpic(pp, US"quota", len) == 0)
3241 *basic_errno = ERRNO_EXIMQUOTA;
3242 if (q != p && (*more_errno = readconf_readtime(q+1, *p, FALSE)) < 0)
3243 return US"bad time value";
3246 else if (len == 7 && strncmpic(pp, US"refused", len) == 0)
3248 *basic_errno = ECONNREFUSED;
3251 if (strncmpic(q+1, US"MX", p-q-1) == 0) *more_errno = 'M';
3252 else if (strncmpic(q+1, US"A", p-q-1) == 0) *more_errno = 'A';
3253 else return US"A or MX expected after \"refused\"";
3257 else if (len == 7 && strncmpic(pp, US"timeout", len) == 0)
3259 *basic_errno = ETIMEDOUT;
3263 int xlen = p - q - 1;
3266 static uschar *extras[] =
3267 { US"A", US"MX", US"connect", US"connect_A", US"connect_MX" };
3268 static int values[] =
3269 { 'A', 'M', RTEF_CTOUT, RTEF_CTOUT|'A', RTEF_CTOUT|'M' };
3271 for (i = 0; i < sizeof(extras)/sizeof(uschar *); i++)
3273 if (strncmpic(x, extras[i], xlen) == 0)
3275 *more_errno = values[i];
3280 if (i >= sizeof(extras)/sizeof(uschar *))
3282 if (strncmpic(x, US"DNS", xlen) == 0)
3284 log_write(0, LOG_MAIN|LOG_PANIC, "\"timeout_dns\" is no longer "
3285 "available in retry rules (it has never worked) - treated as "
3288 else return US"\"A\", \"MX\", or \"connect\" expected after \"timeout\"";
3293 else if (strncmpic(pp, US"rcpt_4", 6) == 0)
3296 int x = 255; /* means "any 4xx code" */
3297 if (p != pp + 8) bad = TRUE; else
3299 int a = pp[6], b = pp[7];
3303 if (isdigit(b)) x += b - '0';
3304 else if (b == 'x') x += 100;
3307 else if (a != 'x' || b != 'x') bad = TRUE;
3310 if (bad) return US"rcpt_4 must be followed by xx, dx, or dd, where "
3311 "x is literal and d is any digit";
3313 *basic_errno = ERRNO_RCPT4XX;
3314 *more_errno = x << 8;
3317 else if (len == 4 && strncmpic(pp, US"auth", len) == 0 &&
3318 strncmpic(q+1, US"failed", p-q-1) == 0)
3320 *basic_errno = ERRNO_AUTHFAIL;
3323 else if (len != 1 || Ustrncmp(pp, "*", 1) != 0)
3324 return string_sprintf("unknown or malformed retry error \"%.*s\"", p-pp, pp);
3332 /*************************************************
3333 * Read retry information *
3334 *************************************************/
3336 /* Each line of retry information contains:
3338 . A domain name pattern or an address pattern;
3340 . An error name, possibly with additional data, or *;
3342 . An optional sequence of retry items, each consisting of an identifying
3343 letter, a cutoff time, and optional parameters.
3345 All this is decoded and placed into a control block. */
3348 /* Subroutine to read an argument, preceded by a comma and terminated
3349 by comma, semicolon, whitespace, or newline. The types are: 0 = time value,
3350 1 = fixed point number (returned *1000).
3353 paddr pointer to pointer to current character; updated
3354 type 0 => read a time; 1 => read a fixed point number
3356 Returns: time in seconds or fixed point number * 1000
3360 retry_arg(uschar **paddr, int type)
3365 if (*p++ != ',') log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "comma expected");
3367 while (isspace(*p)) p++;
3369 while (isalnum(*p) || (type == 1 && *p == '.')) p++;
3371 if (*p != 0 && !isspace(*p) && *p != ',' && *p != ';')
3372 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "comma or semicolon expected");
3378 return readconf_readtime(pp, *p, FALSE);
3380 return readconf_readfixed(pp, *p);
3382 return 0; /* Keep picky compilers happy */
3385 /* The function proper */
3388 readconf_retries(void)
3390 retry_config **chain = &retries;
3394 while ((p = get_config_line()) != NULL)
3396 retry_rule **rchain;
3399 next = store_get(sizeof(retry_config));
3402 chain = &(next->next);
3403 next->basic_errno = next->more_errno = 0;
3404 next->senders = NULL;
3406 rchain = &(next->rules);
3408 next->pattern = string_dequote(&p);
3409 while (isspace(*p)) p++;
3411 while (mac_isgraph(*p)) p++;
3412 if (p - pp <= 0) log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
3413 "missing error type");
3415 /* Test error names for things we understand. */
3417 if ((error = readconf_retry_error(pp, p, &(next->basic_errno),
3418 &(next->more_errno))) != NULL)
3419 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "%s", error);
3421 /* There may be an optional address list of senders to be used as another
3422 constraint on the rule. This was added later, so the syntax is a bit of a
3423 fudge. Anything that is not a retry rule starting "F," or "G," is treated as
3426 while (isspace(*p)) p++;
3427 if (Ustrncmp(p, "senders", 7) == 0)
3430 while (isspace(*p)) p++;
3431 if (*p++ != '=') log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
3432 "\"=\" expected after \"senders\" in retry rule");
3433 while (isspace(*p)) p++;
3434 next->senders = string_dequote(&p);
3437 /* Now the retry rules. Keep the maximum timeout encountered. */
3439 while (isspace(*p)) p++;
3443 retry_rule *rule = store_get(sizeof(retry_rule));
3445 rchain = &(rule->next);
3447 rule->rule = toupper(*p++);
3448 rule->timeout = retry_arg(&p, 0);
3449 if (rule->timeout > retry_maximum_timeout)
3450 retry_maximum_timeout = rule->timeout;
3454 case 'F': /* Fixed interval */
3455 rule->p1 = retry_arg(&p, 0);
3458 case 'G': /* Geometrically increasing intervals */
3459 rule->p1 = retry_arg(&p, 0);
3460 rule->p2 = retry_arg(&p, 1);
3464 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "unknown retry rule letter");
3468 if (rule->timeout <= 0 || rule->p1 <= 0 ||
3469 (rule->rule == 'G' && rule->p2 < 1000))
3470 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
3471 "bad parameters for retry rule");
3473 while (isspace(*p)) p++;
3477 while (isspace(*p)) p++;
3480 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "semicolon expected");
3487 /*************************************************
3488 * Initialize authenticators *
3489 *************************************************/
3491 /* Read the authenticators section of the configuration file.
3500 auth_instance *au, *bu;
3501 readconf_driver_init(US"authenticator",
3502 (driver_instance **)(&auths), /* chain anchor */
3503 (driver_info *)auths_available, /* available drivers */
3504 sizeof(auth_info), /* size of info block */
3505 &auth_defaults, /* default values for generic options */
3506 sizeof(auth_instance), /* size of instance block */
3507 optionlist_auths, /* generic options */
3508 optionlist_auths_size);
3510 for (au = auths; au != NULL; au = au->next)
3512 if (au->public_name == NULL)
3513 log_write(0, LOG_PANIC_DIE|LOG_CONFIG, "no public name specified for "
3514 "the %s authenticator", au->name);
3515 for (bu = au->next; bu != NULL; bu = bu->next)
3517 if (strcmpic(au->public_name, bu->public_name) == 0)
3519 if ((au->client && bu->client) || (au->server && bu->server))
3520 log_write(0, LOG_PANIC_DIE|LOG_CONFIG, "two %s authenticators "
3521 "(%s and %s) have the same public name (%s)",
3522 (au->client)? US"client" : US"server", au->name, bu->name,
3532 /*************************************************
3533 * Read ACL information *
3534 *************************************************/
3536 /* If this run of Exim is not doing something that involves receiving a
3537 message, we can just skip over the ACL information. No need to parse it.
3539 First, we have a function for acl_read() to call back to get the next line. We
3540 need to remember the line we passed, because at the end it will contain the
3541 name of the next ACL. */
3543 static uschar *acl_line;
3548 acl_line = get_config_line();
3553 /* Now the main function:
3556 skip TRUE when this Exim process is doing something that will
3557 not need the ACL data
3563 readconf_acl(BOOL skip)
3567 /* Not receiving messages, don't need to parse the ACL data */
3571 DEBUG(D_acl) debug_printf("skipping ACL configuration - not needed\n");
3572 while ((p = get_config_line()) != NULL);
3576 /* Read each ACL and add it into the tree */
3578 acl_line = get_config_line();
3580 while(acl_line != NULL)
3586 p = readconf_readname(name, sizeof(name), acl_line);
3588 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "missing ACL name");
3590 node = store_get(sizeof(tree_node) + Ustrlen(name));
3591 Ustrcpy(node->name, name);
3592 if (!tree_insertnode(&acl_anchor, node))
3593 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
3594 "there are two ACLs called \"%s\"", name);
3596 node->data.ptr = acl_read(acl_callback, &error);
3598 if (node->data.ptr == NULL && error != NULL)
3599 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "error in ACL: %s", error);
3605 /*************************************************
3606 * Read configuration for local_scan() *
3607 *************************************************/
3609 /* This function is called after "begin local_scan" is encountered in the
3610 configuration file. If the local_scan() function allows for configuration
3611 options, we can process them. Otherwise, we expire in a panic.
3618 local_scan_init(void)
3620 #ifndef LOCAL_SCAN_HAS_OPTIONS
3621 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "local_scan() options not supported: "
3622 "(LOCAL_SCAN_HAS_OPTIONS not defined in Local/Makefile)");
3626 while ((p = get_config_line()) != NULL)
3628 (void) readconf_handle_option(p, local_scan_options, local_scan_options_count,
3629 NULL, US"local_scan option \"%s\" unknown");
3636 /*************************************************
3637 * Read rest of configuration (after main) *
3638 *************************************************/
3640 /* This function reads the rest of the runtime configuration, after the main
3641 configuration. It is called only when actually needed. Each subsequent section
3642 of the configuration starts with a line of the form
3646 where the name is "routers", "transports", etc. A section is terminated by
3647 hitting the next "begin" line, and the next name is left in next_section.
3648 Because it may confuse people as to whether the names are singular or plural,
3649 we add "s" if it's missing. There is always enough room in next_section for
3650 this. This function is basically just a switch.
3653 skip_acl TRUE if ACL information is not needed
3658 static uschar *section_list[] = {
3668 readconf_rest(BOOL skip_acl)
3672 while(next_section[0] != 0)
3676 int last = sizeof(section_list) / sizeof(uschar *);
3678 int n = Ustrlen(next_section);
3680 if (tolower(next_section[n-1]) != 's') Ustrcpy(next_section+n, "s");
3684 int c = strcmpic(next_section, section_list[mid]);
3686 if (c > 0) first = mid + 1; else last = mid;
3688 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
3689 "\"%.*s\" is not a known configuration section name", n, next_section);
3690 mid = (last + first)/2;
3694 if (((had ^= bit) & bit) == 0)
3695 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
3696 "\"%.*s\" section is repeated in the configuration file", n,
3701 case 0: readconf_acl(skip_acl); break;
3702 case 1: auths_init(); break;
3703 case 2: local_scan_init(); break;
3704 case 3: readconf_retries(); break;
3705 case 4: readconf_rewrites(); break;
3706 case 5: route_init(); break;
3707 case 6: transport_init(); break;
3711 fclose(config_file);
3714 /* End of readconf.c */