Constify config_filename
[exim.git] / src / src / readconf.c
CommitLineData
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1/*************************************************
2* Exim - an Internet mail transport agent *
3*************************************************/
4
4fab92fb 5/* Copyright (c) University of Cambridge 1995 - 2016 */
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6/* See the file NOTICE for conditions of use and distribution. */
7
8/* Functions for reading the configuration file, and for displaying
9overall configuration values. Thanks to Brian Candler for the original
10implementation of the conditional .ifdef etc. */
11
12#include "exim.h"
13
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14extern char **environ;
15
1ad6489e 16static void fn_smtp_receive_timeout(const uschar * name, const uschar * str);
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17static void save_config_line(const uschar* line);
18static void save_config_position(const uschar *file, int line);
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19static void print_config(BOOL admin, BOOL terse);
20static void readconf_options_auths(void);
21
1ad6489e 22
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23#define CSTATE_STACK_SIZE 10
24
25
26/* Structure for chain (stack) of .included files */
27
28typedef struct config_file_item {
29 struct config_file_item *next;
007bc90f 30 const uschar *filename;
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31 FILE *file;
32 int lineno;
33} config_file_item;
34
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35/* Structure for chain of configuration lines (-bP config) */
36
37typedef struct config_line_item {
38 struct config_line_item *next;
39 uschar *line;
40} config_line_item;
41
42static config_line_item* config_lines;
43
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44/* Structure of table of conditional words and their state transitions */
45
46typedef struct cond_item {
47 uschar *name;
48 int namelen;
49 int action1;
50 int action2;
51 int pushpop;
52} cond_item;
53
54/* Structure of table of syslog facility names and values */
55
56typedef struct syslog_fac_item {
57 uschar *name;
58 int value;
59} syslog_fac_item;
60
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61/* constants */
62static const char * const hidden = "<value not displayable>";
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63
64/* Static variables */
65
66static config_file_item *config_file_stack = NULL; /* For includes */
67
68static uschar *syslog_facility_str = NULL;
69static uschar next_section[24];
70static uschar time_buffer[24];
71
72/* State variables for conditional loading (.ifdef / .else / .endif) */
73
74static int cstate = 0;
75static int cstate_stack_ptr = -1;
76static int cstate_stack[CSTATE_STACK_SIZE];
77
78/* Table of state transitions for handling conditional inclusions. There are
79four possible state transitions:
80
81 .ifdef true
82 .ifdef false
83 .elifdef true (or .else)
84 .elifdef false
85
86.endif just causes the previous cstate to be popped off the stack */
87
88static int next_cstate[3][4] =
89 {
90 /* State 0: reading from file, or reading until next .else or .endif */
91 { 0, 1, 2, 2 },
92 /* State 1: condition failed, skipping until next .else or .endif */
93 { 2, 2, 0, 1 },
94 /* State 2: skipping until .endif */
95 { 2, 2, 2, 2 },
96 };
97
98/* Table of conditionals and the states to set. For each name, there are four
99values: the length of the name (to save computing it each time), the state to
100set if a macro was found in the line, the state to set if a macro was not found
101in the line, and a stack manipulation setting which is:
102
103 -1 pull state value off the stack
104 0 don't alter the stack
105 +1 push value onto stack, before setting new state
106*/
107
108static cond_item cond_list[] = {
109 { US"ifdef", 5, 0, 1, 1 },
110 { US"ifndef", 6, 1, 0, 1 },
111 { US"elifdef", 7, 2, 3, 0 },
112 { US"elifndef", 8, 3, 2, 0 },
113 { US"else", 4, 2, 2, 0 },
114 { US"endif", 5, 0, 0, -1 }
115};
116
117static int cond_list_size = sizeof(cond_list)/sizeof(cond_item);
118
119/* Table of syslog facility names and their values */
120
121static syslog_fac_item syslog_list[] = {
122 { US"mail", LOG_MAIL },
123 { US"user", LOG_USER },
124 { US"news", LOG_NEWS },
125 { US"uucp", LOG_UUCP },
126 { US"local0", LOG_LOCAL0 },
127 { US"local1", LOG_LOCAL1 },
128 { US"local2", LOG_LOCAL2 },
129 { US"local3", LOG_LOCAL3 },
130 { US"local4", LOG_LOCAL4 },
131 { US"local5", LOG_LOCAL5 },
132 { US"local6", LOG_LOCAL6 },
133 { US"local7", LOG_LOCAL7 },
134 { US"daemon", LOG_DAEMON }
135};
136
137static int syslog_list_size = sizeof(syslog_list)/sizeof(syslog_fac_item);
138
139
140
141
142/*************************************************
143* Main configuration options *
144*************************************************/
145
146/* The list of options that can be set in the main configuration file. This
147must be in alphabetic order because it is searched by binary chop. */
148
149static optionlist optionlist_config[] = {
150 { "*set_exim_group", opt_bool|opt_hidden, &exim_gid_set },
151 { "*set_exim_user", opt_bool|opt_hidden, &exim_uid_set },
152 { "*set_system_filter_group", opt_bool|opt_hidden, &system_filter_gid_set },
153 { "*set_system_filter_user", opt_bool|opt_hidden, &system_filter_uid_set },
154 { "accept_8bitmime", opt_bool, &accept_8bitmime },
155 { "acl_not_smtp", opt_stringptr, &acl_not_smtp },
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156#ifdef WITH_CONTENT_SCAN
157 { "acl_not_smtp_mime", opt_stringptr, &acl_not_smtp_mime },
158#endif
45b91596 159 { "acl_not_smtp_start", opt_stringptr, &acl_not_smtp_start },
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160 { "acl_smtp_auth", opt_stringptr, &acl_smtp_auth },
161 { "acl_smtp_connect", opt_stringptr, &acl_smtp_connect },
162 { "acl_smtp_data", opt_stringptr, &acl_smtp_data },
8ccd00b1 163#ifndef DISABLE_PRDR
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164 { "acl_smtp_data_prdr", opt_stringptr, &acl_smtp_data_prdr },
165#endif
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166#ifndef DISABLE_DKIM
167 { "acl_smtp_dkim", opt_stringptr, &acl_smtp_dkim },
168#endif
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169 { "acl_smtp_etrn", opt_stringptr, &acl_smtp_etrn },
170 { "acl_smtp_expn", opt_stringptr, &acl_smtp_expn },
171 { "acl_smtp_helo", opt_stringptr, &acl_smtp_helo },
172 { "acl_smtp_mail", opt_stringptr, &acl_smtp_mail },
173 { "acl_smtp_mailauth", opt_stringptr, &acl_smtp_mailauth },
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174#ifdef WITH_CONTENT_SCAN
175 { "acl_smtp_mime", opt_stringptr, &acl_smtp_mime },
176#endif
8f128379 177 { "acl_smtp_notquit", opt_stringptr, &acl_smtp_notquit },
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178 { "acl_smtp_predata", opt_stringptr, &acl_smtp_predata },
179 { "acl_smtp_quit", opt_stringptr, &acl_smtp_quit },
180 { "acl_smtp_rcpt", opt_stringptr, &acl_smtp_rcpt },
181#ifdef SUPPORT_TLS
182 { "acl_smtp_starttls", opt_stringptr, &acl_smtp_starttls },
183#endif
184 { "acl_smtp_vrfy", opt_stringptr, &acl_smtp_vrfy },
4fab92fb 185 { "add_environment", opt_stringptr, &add_environment },
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186 { "admin_groups", opt_gidlist, &admin_groups },
187 { "allow_domain_literals", opt_bool, &allow_domain_literals },
188 { "allow_mx_to_ip", opt_bool, &allow_mx_to_ip },
189 { "allow_utf8_domains", opt_bool, &allow_utf8_domains },
190 { "auth_advertise_hosts", opt_stringptr, &auth_advertise_hosts },
191 { "auto_thaw", opt_time, &auto_thaw },
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192#ifdef WITH_CONTENT_SCAN
193 { "av_scanner", opt_stringptr, &av_scanner },
194#endif
059ec3d9 195 { "bi_command", opt_stringptr, &bi_command },
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196#ifdef EXPERIMENTAL_BRIGHTMAIL
197 { "bmi_config_file", opt_stringptr, &bmi_config_file },
198#endif
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199 { "bounce_message_file", opt_stringptr, &bounce_message_file },
200 { "bounce_message_text", opt_stringptr, &bounce_message_text },
201 { "bounce_return_body", opt_bool, &bounce_return_body },
62b7cd08 202 { "bounce_return_linesize_limit", opt_mkint, &bounce_return_linesize_limit },
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203 { "bounce_return_message", opt_bool, &bounce_return_message },
204 { "bounce_return_size_limit", opt_mkint, &bounce_return_size_limit },
205 { "bounce_sender_authentication",opt_stringptr,&bounce_sender_authentication },
206 { "callout_domain_negative_expire", opt_time, &callout_cache_domain_negative_expire },
207 { "callout_domain_positive_expire", opt_time, &callout_cache_domain_positive_expire },
208 { "callout_negative_expire", opt_time, &callout_cache_negative_expire },
209 { "callout_positive_expire", opt_time, &callout_cache_positive_expire },
210 { "callout_random_local_part",opt_stringptr, &callout_random_local_part },
211 { "check_log_inodes", opt_int, &check_log_inodes },
212 { "check_log_space", opt_Kint, &check_log_space },
a0d6ba8a 213 { "check_rfc2047_length", opt_bool, &check_rfc2047_length },
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214 { "check_spool_inodes", opt_int, &check_spool_inodes },
215 { "check_spool_space", opt_Kint, &check_spool_space },
4fab92fb 216 { "chunking_advertise_hosts", opt_stringptr, &chunking_advertise_hosts },
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217 { "daemon_smtp_port", opt_stringptr|opt_hidden, &daemon_smtp_port },
218 { "daemon_smtp_ports", opt_stringptr, &daemon_smtp_port },
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219 { "daemon_startup_retries", opt_int, &daemon_startup_retries },
220 { "daemon_startup_sleep", opt_time, &daemon_startup_sleep },
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221#ifdef EXPERIMENTAL_DCC
222 { "dcc_direct_add_header", opt_bool, &dcc_direct_add_header },
223 { "dccifd_address", opt_stringptr, &dccifd_address },
224 { "dccifd_options", opt_stringptr, &dccifd_options },
225#endif
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226 { "delay_warning", opt_timelist, &delay_warning },
227 { "delay_warning_condition", opt_stringptr, &delay_warning_condition },
228 { "deliver_drop_privilege", opt_bool, &deliver_drop_privilege },
229 { "deliver_queue_load_max", opt_fixed, &deliver_queue_load_max },
230 { "delivery_date_remove", opt_bool, &delivery_date_remove },
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231#ifdef ENABLE_DISABLE_FSYNC
232 { "disable_fsync", opt_bool, &disable_fsync },
233#endif
7e66e54d 234 { "disable_ipv6", opt_bool, &disable_ipv6 },
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235#ifndef DISABLE_DKIM
236 { "dkim_verify_signers", opt_stringptr, &dkim_verify_signers },
237#endif
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238#ifdef EXPERIMENTAL_DMARC
239 { "dmarc_forensic_sender", opt_stringptr, &dmarc_forensic_sender },
240 { "dmarc_history_file", opt_stringptr, &dmarc_history_file },
241 { "dmarc_tld_file", opt_stringptr, &dmarc_tld_file },
242#endif
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243 { "dns_again_means_nonexist", opt_stringptr, &dns_again_means_nonexist },
244 { "dns_check_names_pattern", opt_stringptr, &check_dns_names_pattern },
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245 { "dns_csa_search_limit", opt_int, &dns_csa_search_limit },
246 { "dns_csa_use_reverse", opt_bool, &dns_csa_use_reverse },
83712b39 247 { "dns_dnssec_ok", opt_int, &dns_dnssec_ok },
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248 { "dns_ipv4_lookup", opt_stringptr, &dns_ipv4_lookup },
249 { "dns_retrans", opt_time, &dns_retrans },
250 { "dns_retry", opt_int, &dns_retry },
9820a77f 251 { "dns_trust_aa", opt_stringptr, &dns_trust_aa },
e97d1f08 252 { "dns_use_edns0", opt_int, &dns_use_edns0 },
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253 /* This option is now a no-op, retained for compability */
254 { "drop_cr", opt_bool, &drop_cr },
255/*********************************************************/
6c1c3d1d 256 { "dsn_advertise_hosts", opt_stringptr, &dsn_advertise_hosts },
0e22dfd1 257 { "dsn_from", opt_stringptr, &dsn_from },
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258 { "envelope_to_remove", opt_bool, &envelope_to_remove },
259 { "errors_copy", opt_stringptr, &errors_copy },
260 { "errors_reply_to", opt_stringptr, &errors_reply_to },
0cbf2b82 261#ifndef DISABLE_EVENT
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262 { "event_action", opt_stringptr, &event_action },
263#endif
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264 { "exim_group", opt_gid, &exim_gid },
265 { "exim_path", opt_stringptr, &exim_path },
266 { "exim_user", opt_uid, &exim_uid },
267 { "extra_local_interfaces", opt_stringptr, &extra_local_interfaces },
268 { "extract_addresses_remove_arguments", opt_bool, &extract_addresses_remove_arguments },
269 { "finduser_retries", opt_int, &finduser_retries },
270 { "freeze_tell", opt_stringptr, &freeze_tell },
271 { "gecos_name", opt_stringptr, &gecos_name },
272 { "gecos_pattern", opt_stringptr, &gecos_pattern },
83da1223 273#ifdef SUPPORT_TLS
2519e60d 274 { "gnutls_allow_auto_pkcs11", opt_bool, &gnutls_allow_auto_pkcs11 },
e6060e2c 275 { "gnutls_compat_mode", opt_bool, &gnutls_compat_mode },
83da1223 276#endif
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277 { "header_line_maxsize", opt_int, &header_line_maxsize },
278 { "header_maxsize", opt_int, &header_maxsize },
279 { "headers_charset", opt_stringptr, &headers_charset },
280 { "helo_accept_junk_hosts", opt_stringptr, &helo_accept_junk_hosts },
281 { "helo_allow_chars", opt_stringptr, &helo_allow_chars },
282 { "helo_lookup_domains", opt_stringptr, &helo_lookup_domains },
283 { "helo_try_verify_hosts", opt_stringptr, &helo_try_verify_hosts },
284 { "helo_verify_hosts", opt_stringptr, &helo_verify_hosts },
285 { "hold_domains", opt_stringptr, &hold_domains },
286 { "host_lookup", opt_stringptr, &host_lookup },
287 { "host_lookup_order", opt_stringptr, &host_lookup_order },
288 { "host_reject_connection", opt_stringptr, &host_reject_connection },
289 { "hosts_connection_nolog", opt_stringptr, &hosts_connection_nolog },
cee5f132 290#ifdef SUPPORT_PROXY
7a2fa0bc 291 { "hosts_proxy", opt_stringptr, &hosts_proxy },
cee5f132 292#endif
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293 { "hosts_treat_as_local", opt_stringptr, &hosts_treat_as_local },
294#ifdef LOOKUP_IBASE
295 { "ibase_servers", opt_stringptr, &ibase_servers },
296#endif
297 { "ignore_bounce_errors_after", opt_time, &ignore_bounce_errors_after },
298 { "ignore_fromline_hosts", opt_stringptr, &ignore_fromline_hosts },
299 { "ignore_fromline_local", opt_bool, &ignore_fromline_local },
4fab92fb 300 { "keep_environment", opt_stringptr, &keep_environment },
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301 { "keep_malformed", opt_time, &keep_malformed },
302#ifdef LOOKUP_LDAP
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303 { "ldap_ca_cert_dir", opt_stringptr, &eldap_ca_cert_dir },
304 { "ldap_ca_cert_file", opt_stringptr, &eldap_ca_cert_file },
305 { "ldap_cert_file", opt_stringptr, &eldap_cert_file },
306 { "ldap_cert_key", opt_stringptr, &eldap_cert_key },
307 { "ldap_cipher_suite", opt_stringptr, &eldap_cipher_suite },
059ec3d9 308 { "ldap_default_servers", opt_stringptr, &eldap_default_servers },
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309 { "ldap_require_cert", opt_stringptr, &eldap_require_cert },
310 { "ldap_start_tls", opt_bool, &eldap_start_tls },
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311 { "ldap_version", opt_int, &eldap_version },
312#endif
313 { "local_from_check", opt_bool, &local_from_check },
314 { "local_from_prefix", opt_stringptr, &local_from_prefix },
315 { "local_from_suffix", opt_stringptr, &local_from_suffix },
316 { "local_interfaces", opt_stringptr, &local_interfaces },
317 { "local_scan_timeout", opt_time, &local_scan_timeout },
318 { "local_sender_retain", opt_bool, &local_sender_retain },
319 { "localhost_number", opt_stringptr, &host_number_string },
320 { "log_file_path", opt_stringptr, &log_file_path },
321 { "log_selector", opt_stringptr, &log_selector_string },
322 { "log_timezone", opt_bool, &log_timezone },
323 { "lookup_open_max", opt_int, &lookup_open_max },
324 { "max_username_length", opt_int, &max_username_length },
ddea74fa 325 { "message_body_newlines", opt_bool, &message_body_newlines },
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326 { "message_body_visible", opt_mkint, &message_body_visible },
327 { "message_id_header_domain", opt_stringptr, &message_id_domain },
328 { "message_id_header_text", opt_stringptr, &message_id_text },
329 { "message_logs", opt_bool, &message_logs },
330 { "message_size_limit", opt_stringptr, &message_size_limit },
331#ifdef SUPPORT_MOVE_FROZEN_MESSAGES
332 { "move_frozen_messages", opt_bool, &move_frozen_messages },
333#endif
334 { "mua_wrapper", opt_bool, &mua_wrapper },
335#ifdef LOOKUP_MYSQL
336 { "mysql_servers", opt_stringptr, &mysql_servers },
337#endif
338 { "never_users", opt_uidlist, &never_users },
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339#ifdef SUPPORT_TLS
340 { "openssl_options", opt_stringptr, &openssl_options },
341#endif
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342#ifdef LOOKUP_ORACLE
343 { "oracle_servers", opt_stringptr, &oracle_servers },
344#endif
345 { "percent_hack_domains", opt_stringptr, &percent_hack_domains },
346#ifdef EXIM_PERL
347 { "perl_at_start", opt_bool, &opt_perl_at_start },
348 { "perl_startup", opt_stringptr, &opt_perl_startup },
38d85dd1 349 { "perl_taintmode", opt_bool, &opt_perl_taintmode },
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350#endif
351#ifdef LOOKUP_PGSQL
352 { "pgsql_servers", opt_stringptr, &pgsql_servers },
353#endif
354 { "pid_file_path", opt_stringptr, &pid_file_path },
355 { "pipelining_advertise_hosts", opt_stringptr, &pipelining_advertise_hosts },
8ccd00b1 356#ifndef DISABLE_PRDR
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357 { "prdr_enable", opt_bool, &prdr_enable },
358#endif
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359 { "preserve_message_logs", opt_bool, &preserve_message_logs },
360 { "primary_hostname", opt_stringptr, &primary_hostname },
361 { "print_topbitchars", opt_bool, &print_topbitchars },
362 { "process_log_path", opt_stringptr, &process_log_path },
363 { "prod_requires_admin", opt_bool, &prod_requires_admin },
364 { "qualify_domain", opt_stringptr, &qualify_domain_sender },
365 { "qualify_recipient", opt_stringptr, &qualify_domain_recipient },
366 { "queue_domains", opt_stringptr, &queue_domains },
367 { "queue_list_requires_admin",opt_bool, &queue_list_requires_admin },
368 { "queue_only", opt_bool, &queue_only },
369 { "queue_only_file", opt_stringptr, &queue_only_file },
370 { "queue_only_load", opt_fixed, &queue_only_load },
8669f003 371 { "queue_only_load_latch", opt_bool, &queue_only_load_latch },
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372 { "queue_only_override", opt_bool, &queue_only_override },
373 { "queue_run_in_order", opt_bool, &queue_run_in_order },
4fab92fb 374 { "queue_run_max", opt_stringptr, &queue_run_max },
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375 { "queue_smtp_domains", opt_stringptr, &queue_smtp_domains },
376 { "receive_timeout", opt_time, &receive_timeout },
377 { "received_header_text", opt_stringptr, &received_header_text },
378 { "received_headers_max", opt_int, &received_headers_max },
379 { "recipient_unqualified_hosts", opt_stringptr, &recipient_unqualified_hosts },
380 { "recipients_max", opt_int, &recipients_max },
381 { "recipients_max_reject", opt_bool, &recipients_max_reject },
de78e2d5 382#ifdef LOOKUP_REDIS
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383 { "redis_servers", opt_stringptr, &redis_servers },
384#endif
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385 { "remote_max_parallel", opt_int, &remote_max_parallel },
386 { "remote_sort_domains", opt_stringptr, &remote_sort_domains },
387 { "retry_data_expire", opt_time, &retry_data_expire },
388 { "retry_interval_max", opt_time, &retry_interval_max },
389 { "return_path_remove", opt_bool, &return_path_remove },
390 { "return_size_limit", opt_mkint|opt_hidden, &bounce_return_size_limit },
391 { "rfc1413_hosts", opt_stringptr, &rfc1413_hosts },
392 { "rfc1413_query_timeout", opt_time, &rfc1413_query_timeout },
393 { "sender_unqualified_hosts", opt_stringptr, &sender_unqualified_hosts },
846430d9 394 { "slow_lookup_log", opt_int, &slow_lookup_log },
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395 { "smtp_accept_keepalive", opt_bool, &smtp_accept_keepalive },
396 { "smtp_accept_max", opt_int, &smtp_accept_max },
397 { "smtp_accept_max_nonmail", opt_int, &smtp_accept_max_nonmail },
398 { "smtp_accept_max_nonmail_hosts", opt_stringptr, &smtp_accept_max_nonmail_hosts },
399 { "smtp_accept_max_per_connection", opt_int, &smtp_accept_max_per_connection },
400 { "smtp_accept_max_per_host", opt_stringptr, &smtp_accept_max_per_host },
401 { "smtp_accept_queue", opt_int, &smtp_accept_queue },
402 { "smtp_accept_queue_per_connection", opt_int, &smtp_accept_queue_per_connection },
403 { "smtp_accept_reserve", opt_int, &smtp_accept_reserve },
404 { "smtp_active_hostname", opt_stringptr, &raw_active_hostname },
405 { "smtp_banner", opt_stringptr, &smtp_banner },
406 { "smtp_check_spool_space", opt_bool, &smtp_check_spool_space },
407 { "smtp_connect_backlog", opt_int, &smtp_connect_backlog },
408 { "smtp_enforce_sync", opt_bool, &smtp_enforce_sync },
409 { "smtp_etrn_command", opt_stringptr, &smtp_etrn_command },
410 { "smtp_etrn_serialize", opt_bool, &smtp_etrn_serialize },
411 { "smtp_load_reserve", opt_fixed, &smtp_load_reserve },
412 { "smtp_max_synprot_errors", opt_int, &smtp_max_synprot_errors },
413 { "smtp_max_unknown_commands",opt_int, &smtp_max_unknown_commands },
414 { "smtp_ratelimit_hosts", opt_stringptr, &smtp_ratelimit_hosts },
415 { "smtp_ratelimit_mail", opt_stringptr, &smtp_ratelimit_mail },
416 { "smtp_ratelimit_rcpt", opt_stringptr, &smtp_ratelimit_rcpt },
1ad6489e 417 { "smtp_receive_timeout", opt_func, &fn_smtp_receive_timeout },
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418 { "smtp_reserve_hosts", opt_stringptr, &smtp_reserve_hosts },
419 { "smtp_return_error_details",opt_bool, &smtp_return_error_details },
8c5d388a 420#ifdef SUPPORT_I18N
3d1451ea
JH
421 { "smtputf8_advertise_hosts", opt_stringptr, &smtputf8_advertise_hosts },
422#endif
8523533c
TK
423#ifdef WITH_CONTENT_SCAN
424 { "spamd_address", opt_stringptr, &spamd_address },
425#endif
65a7d8c3
NM
426#ifdef EXPERIMENTAL_SPF
427 { "spf_guess", opt_stringptr, &spf_guess },
428#endif
059ec3d9
PH
429 { "split_spool_directory", opt_bool, &split_spool_directory },
430 { "spool_directory", opt_stringptr, &spool_directory },
31480e42
PH
431#ifdef LOOKUP_SQLITE
432 { "sqlite_lock_timeout", opt_int, &sqlite_lock_timeout },
433#endif
8523533c
TK
434#ifdef EXPERIMENTAL_SRS
435 { "srs_config", opt_stringptr, &srs_config },
384152a6
TK
436 { "srs_hashlength", opt_int, &srs_hashlength },
437 { "srs_hashmin", opt_int, &srs_hashmin },
438 { "srs_maxage", opt_int, &srs_maxage },
439 { "srs_secrets", opt_stringptr, &srs_secrets },
440 { "srs_usehash", opt_bool, &srs_usehash },
441 { "srs_usetimestamp", opt_bool, &srs_usetimestamp },
8523533c 442#endif
38a0a95f 443 { "strict_acl_vars", opt_bool, &strict_acl_vars },
059ec3d9
PH
444 { "strip_excess_angle_brackets", opt_bool, &strip_excess_angle_brackets },
445 { "strip_trailing_dot", opt_bool, &strip_trailing_dot },
446 { "syslog_duplication", opt_bool, &syslog_duplication },
447 { "syslog_facility", opt_stringptr, &syslog_facility_str },
4fab92fb 448 { "syslog_pid", opt_bool, &syslog_pid },
059ec3d9
PH
449 { "syslog_processname", opt_stringptr, &syslog_processname },
450 { "syslog_timestamp", opt_bool, &syslog_timestamp },
451 { "system_filter", opt_stringptr, &system_filter },
452 { "system_filter_directory_transport", opt_stringptr,&system_filter_directory_transport },
453 { "system_filter_file_transport",opt_stringptr,&system_filter_file_transport },
454 { "system_filter_group", opt_gid, &system_filter_gid },
455 { "system_filter_pipe_transport",opt_stringptr,&system_filter_pipe_transport },
456 { "system_filter_reply_transport",opt_stringptr,&system_filter_reply_transport },
457 { "system_filter_user", opt_uid, &system_filter_uid },
458 { "tcp_nodelay", opt_bool, &tcp_nodelay },
5dc43717
JJ
459#ifdef USE_TCP_WRAPPERS
460 { "tcp_wrappers_daemon_name", opt_stringptr, &tcp_wrappers_daemon_name },
461#endif
059ec3d9
PH
462 { "timeout_frozen_after", opt_time, &timeout_frozen_after },
463 { "timezone", opt_stringptr, &timezone_string },
059ec3d9 464 { "tls_advertise_hosts", opt_stringptr, &tls_advertise_hosts },
23f3dc67 465#ifdef SUPPORT_TLS
059ec3d9
PH
466 { "tls_certificate", opt_stringptr, &tls_certificate },
467 { "tls_crl", opt_stringptr, &tls_crl },
3375e053 468 { "tls_dh_max_bits", opt_int, &tls_dh_max_bits },
059ec3d9 469 { "tls_dhparam", opt_stringptr, &tls_dhparam },
10ca4f1c 470 { "tls_eccurve", opt_stringptr, &tls_eccurve },
f2de3a33 471# ifndef DISABLE_OCSP
3f7eeb86 472 { "tls_ocsp_file", opt_stringptr, &tls_ocsp_file },
817d9f57
JH
473# endif
474 { "tls_on_connect_ports", opt_stringptr, &tls_in.on_connect_ports },
059ec3d9
PH
475 { "tls_privatekey", opt_stringptr, &tls_privatekey },
476 { "tls_remember_esmtp", opt_bool, &tls_remember_esmtp },
477 { "tls_require_ciphers", opt_stringptr, &tls_require_ciphers },
478 { "tls_try_verify_hosts", opt_stringptr, &tls_try_verify_hosts },
479 { "tls_verify_certificates", opt_stringptr, &tls_verify_certificates },
480 { "tls_verify_hosts", opt_stringptr, &tls_verify_hosts },
481#endif
482 { "trusted_groups", opt_gidlist, &trusted_groups },
483 { "trusted_users", opt_uidlist, &trusted_users },
484 { "unknown_login", opt_stringptr, &unknown_login },
485 { "unknown_username", opt_stringptr, &unknown_username },
486 { "untrusted_set_sender", opt_stringptr, &untrusted_set_sender },
487 { "uucp_from_pattern", opt_stringptr, &uucp_from_pattern },
488 { "uucp_from_sender", opt_stringptr, &uucp_from_sender },
489 { "warn_message_file", opt_stringptr, &warn_message_file },
490 { "write_rejectlog", opt_bool, &write_rejectlog }
491};
492
4fab92fb 493static int optionlist_config_size = nelem(optionlist_config);
059ec3d9
PH
494
495
496
497/*************************************************
498* Find the name of an option *
499*************************************************/
500
501/* This function is to aid debugging. Various functions take arguments that are
502pointer variables in the options table or in option tables for various drivers.
503For debugging output, it is useful to be able to find the name of the option
504which is currently being processed. This function finds it, if it exists, by
505searching the table(s).
506
507Arguments: a value that is presumed to be in the table above
508Returns: the option name, or an empty string
509*/
510
511uschar *
512readconf_find_option(void *p)
513{
514int i;
515router_instance *r;
516transport_instance *t;
517
4fab92fb 518for (i = 0; i < nelem(optionlist_config); i++)
059ec3d9
PH
519 if (p == optionlist_config[i].value) return US optionlist_config[i].name;
520
4fab92fb 521for (r = routers; r; r = r->next)
059ec3d9
PH
522 {
523 router_info *ri = r->info;
c4b738a9 524 for (i = 0; i < *ri->options_count; i++)
059ec3d9
PH
525 {
526 if ((ri->options[i].type & opt_mask) != opt_stringptr) continue;
527 if (p == (char *)(r->options_block) + (long int)(ri->options[i].value))
528 return US ri->options[i].name;
529 }
530 }
531
4fab92fb 532for (t = transports; t; t = t->next)
059ec3d9
PH
533 {
534 transport_info *ti = t->info;
c4b738a9 535 for (i = 0; i < *ti->options_count; i++)
059ec3d9 536 {
c4b738a9
JH
537 optionlist * op = &ti->options[i];
538 if ((op->type & opt_mask) != opt_stringptr) continue;
539 if (p == ( op->type & opt_public
540 ? (char *)t
541 : (char *)t->options_block
542 )
543 + (long int)op->value)
544 return US op->name;
059ec3d9
PH
545 }
546 }
547
548return US"";
549}
550
551
552
553
cf00dad6
PH
554/*************************************************
555* Deal with an assignment to a macro *
556*************************************************/
557
4fab92fb
HSHR
558/* We have a new definition. The macro_item structure includes a final vector
559called "name" which is one byte long. Thus, adding "namelen" gives us enough
560room to store the "name" string.
561If a builtin macro we place at head of list, else tail. This lets us lazy-create
562builtins. */
563
564macro_item *
565macro_create(const uschar * name, const uschar * val,
566 BOOL command_line, BOOL builtin)
567{
568unsigned namelen = Ustrlen(name);
569macro_item * m = store_get(sizeof(macro_item) + namelen);
570
571/* fprintf(stderr, "%s: '%s' '%s'\n", __FUNCTION__, name, val) */
572if (!macros)
573 {
574 macros = m;
575 mlast = m;
576 m->next = NULL;
577 }
578else if (builtin)
579 {
580 m->next = macros;
581 macros = m;
582 }
583else
584 {
585 mlast->next = m;
586 mlast = m;
587 m->next = NULL;
588 }
589m->command_line = command_line;
590m->namelen = namelen;
591m->replacement = string_copy(val);
592Ustrcpy(m->name, name);
593return m;
594}
595
596
cf00dad6
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597/* This function is called when a line that starts with an upper case letter is
598encountered. The argument "line" should contain a complete logical line, and
599start with the first letter of the macro name. The macro name and the
600replacement text are extracted and stored. Redefinition of existing,
601non-command line, macros is permitted using '==' instead of '='.
602
603Arguments:
604 s points to the start of the logical line
605
606Returns: nothing
607*/
608
609static void
610read_macro_assignment(uschar *s)
611{
612uschar name[64];
613int namelen = 0;
614BOOL redef = FALSE;
615macro_item *m;
cf00dad6
PH
616
617while (isalnum(*s) || *s == '_')
618 {
619 if (namelen >= sizeof(name) - 1)
620 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
ef840681 621 "macro name too long (maximum is " SIZE_T_FMT " characters)", sizeof(name) - 1);
cf00dad6
PH
622 name[namelen++] = *s++;
623 }
624name[namelen] = 0;
625
626while (isspace(*s)) s++;
627if (*s++ != '=')
628 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "malformed macro definition");
629
630if (*s == '=')
631 {
632 redef = TRUE;
633 s++;
634 }
635while (isspace(*s)) s++;
636
637/* If an existing macro of the same name was defined on the command line, we
638just skip this definition. It's an error to attempt to redefine a macro without
639redef set to TRUE, or to redefine a macro when it hasn't been defined earlier.
640It is also an error to define a macro whose name begins with the name of a
4fab92fb
HSHR
641previously defined macro. This is the requirement that make using a tree
642for macros hard; we must check all macros for the substring. Perhaps a
643sorted list, and a bsearch, would work?
644Note: it is documented that the other way round works. */
cf00dad6 645
4fab92fb 646for (m = macros; m; m = m->next)
cf00dad6 647 {
cf00dad6
PH
648 if (Ustrcmp(m->name, name) == 0)
649 {
650 if (!m->command_line && !redef)
651 log_write(0, LOG_CONFIG|LOG_PANIC_DIE, "macro \"%s\" is already "
652 "defined (use \"==\" if you want to redefine it", name);
653 break;
654 }
655
4fab92fb 656 if (m->namelen < namelen && Ustrstr(name, m->name) != NULL)
cf00dad6
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657 log_write(0, LOG_CONFIG|LOG_PANIC_DIE, "\"%s\" cannot be defined as "
658 "a macro because previously defined macro \"%s\" is a substring",
659 name, m->name);
660
661 /* We cannot have this test, because it is documented that a substring
662 macro is permitted (there is even an example).
663 *
4fab92fb 664 * if (m->namelen > namelen && Ustrstr(m->name, name) != NULL)
cf00dad6
PH
665 * log_write(0, LOG_CONFIG|LOG_PANIC_DIE, "\"%s\" cannot be defined as "
666 * "a macro because it is a substring of previously defined macro \"%s\"",
667 * name, m->name);
668 */
cf00dad6
PH
669 }
670
671/* Check for an overriding command-line definition. */
672
4fab92fb 673if (m && m->command_line) return;
cf00dad6
PH
674
675/* Redefinition must refer to an existing macro. */
676
677if (redef)
4fab92fb
HSHR
678 if (m)
679 m->replacement = string_copy(s);
680 else
cf00dad6
PH
681 log_write(0, LOG_CONFIG|LOG_PANIC_DIE, "can't redefine an undefined macro "
682 "\"%s\"", name);
cf00dad6 683
4fab92fb 684/* We have a new definition. */
cf00dad6 685else
4fab92fb
HSHR
686 (void) macro_create(name, s, FALSE, FALSE);
687}
688
689
690
691
692
693/*************************************************/
694/* Create compile-time feature macros */
695static void
696readconf_features(void)
697{
698/* Probably we could work out a static initialiser for wherever
699macros are stored, but this will do for now. Some names are awkward
700due to conflicts with other common macros. */
701
702#ifdef SUPPORT_CRYPTEQ
703 macro_create(US"_HAVE_CRYPTEQ", US"y", FALSE, TRUE);
704#endif
705#if HAVE_ICONV
706 macro_create(US"_HAVE_ICONV", US"y", FALSE, TRUE);
707#endif
708#if HAVE_IPV6
709 macro_create(US"_HAVE_IPV6", US"y", FALSE, TRUE);
710#endif
711#ifdef HAVE_SETCLASSRESOURCES
712 macro_create(US"_HAVE_SETCLASSRESOURCES", US"y", FALSE, TRUE);
713#endif
714#ifdef SUPPORT_PAM
715 macro_create(US"_HAVE_PAM", US"y", FALSE, TRUE);
716#endif
717#ifdef EXIM_PERL
718 macro_create(US"_HAVE_PERL", US"y", FALSE, TRUE);
719#endif
720#ifdef EXPAND_DLFUNC
721 macro_create(US"_HAVE_DLFUNC", US"y", FALSE, TRUE);
722#endif
723#ifdef USE_TCP_WRAPPERS
724 macro_create(US"_HAVE_TCPWRAPPERS", US"y", FALSE, TRUE);
725#endif
726#ifdef SUPPORT_TLS
727 macro_create(US"_HAVE_TLS", US"y", FALSE, TRUE);
728# ifdef USE_GNUTLS
729 macro_create(US"_HAVE_GNUTLS", US"y", FALSE, TRUE);
730# else
731 macro_create(US"_HAVE_OPENSSL", US"y", FALSE, TRUE);
732# endif
733#endif
734#ifdef SUPPORT_TRANSLATE_IP_ADDRESS
735 macro_create(US"_HAVE_TRANSLATE_IP_ADDRESS", US"y", FALSE, TRUE);
736#endif
737#ifdef SUPPORT_MOVE_FROZEN_MESSAGES
738 macro_create(US"_HAVE_MOVE_FROZEN_MESSAGES", US"y", FALSE, TRUE);
739#endif
740#ifdef WITH_CONTENT_SCAN
741 macro_create(US"_HAVE_CONTENT_SCANNING", US"y", FALSE, TRUE);
742#endif
743#ifndef DISABLE_DKIM
744 macro_create(US"_HAVE_DKIM", US"y", FALSE, TRUE);
745#endif
746#ifndef DISABLE_DNSSEC
747 macro_create(US"_HAVE_DNSSEC", US"y", FALSE, TRUE);
748#endif
749#ifndef DISABLE_EVENT
750 macro_create(US"_HAVE_EVENT", US"y", FALSE, TRUE);
751#endif
752#ifdef SUPPORT_I18N
753 macro_create(US"_HAVE_I18N", US"y", FALSE, TRUE);
754#endif
755#ifndef DISABLE_OCSP
756 macro_create(US"_HAVE_OCSP", US"y", FALSE, TRUE);
757#endif
758#ifndef DISABLE_PRDR
759 macro_create(US"_HAVE_PRDR", US"y", FALSE, TRUE);
760#endif
761#ifdef SUPPORT_PROXY
762 macro_create(US"_HAVE_PROXY", US"y", FALSE, TRUE);
763#endif
764#ifdef SUPPORT_SOCKS
765 macro_create(US"_HAVE_SOCKS", US"y", FALSE, TRUE);
766#endif
767#ifdef TCP_FASTOPEN
768 macro_create(US"_HAVE_TCP_FASTOPEN", US"y", FALSE, TRUE);
769#endif
770#ifdef EXPERIMENTAL_LMDB
771 macro_create(US"_HAVE_LMDB", US"y", FALSE, TRUE);
772#endif
773#ifdef EXPERIMENTAL_SPF
774 macro_create(US"_HAVE_SPF", US"y", FALSE, TRUE);
775#endif
776#ifdef EXPERIMENTAL_SRS
777 macro_create(US"_HAVE_SRS", US"y", FALSE, TRUE);
778#endif
779#ifdef EXPERIMENTAL_BRIGHTMAIL
780 macro_create(US"_HAVE_BRIGHTMAIL", US"y", FALSE, TRUE);
781#endif
782#ifdef EXPERIMENTAL_DANE
783 macro_create(US"_HAVE_DANE", US"y", FALSE, TRUE);
784#endif
785#ifdef EXPERIMENTAL_DCC
786 macro_create(US"_HAVE_DCC", US"y", FALSE, TRUE);
787#endif
788#ifdef EXPERIMENTAL_DMARC
789 macro_create(US"_HAVE_DMARC", US"y", FALSE, TRUE);
790#endif
791#ifdef EXPERIMENTAL_DSN_INFO
792 macro_create(US"_HAVE_DSN_INFO", US"y", FALSE, TRUE);
793#endif
794
795#ifdef LOOKUP_LSEARCH
796 macro_create(US"_HAVE_LKUP_LSEARCH", US"y", FALSE, TRUE);
797#endif
798#ifdef LOOKUP_CDB
799 macro_create(US"_HAVE_LKUP_CDB", US"y", FALSE, TRUE);
800#endif
801#ifdef LOOKUP_DBM
802 macro_create(US"_HAVE_LKUP_DBM", US"y", FALSE, TRUE);
803#endif
804#ifdef LOOKUP_DNSDB
805 macro_create(US"_HAVE_LKUP_DNSDB", US"y", FALSE, TRUE);
806#endif
807#ifdef LOOKUP_DSEARCH
808 macro_create(US"_HAVE_LKUP_DSEARCH", US"y", FALSE, TRUE);
809#endif
810#ifdef LOOKUP_IBASE
811 macro_create(US"_HAVE_LKUP_IBASE", US"y", FALSE, TRUE);
812#endif
813#ifdef LOOKUP_LDAP
814 macro_create(US"_HAVE_LKUP_LDAP", US"y", FALSE, TRUE);
815#endif
816#ifdef EXPERIMENTAL_LMDB
817 macro_create(US"_HAVE_LKUP_LMDB", US"y", FALSE, TRUE);
818#endif
819#ifdef LOOKUP_MYSQL
820 macro_create(US"_HAVE_LKUP_MYSQL", US"y", FALSE, TRUE);
821#endif
822#ifdef LOOKUP_NIS
823 macro_create(US"_HAVE_LKUP_NIS", US"y", FALSE, TRUE);
824#endif
825#ifdef LOOKUP_NISPLUS
826 macro_create(US"_HAVE_LKUP_NISPLUS", US"y", FALSE, TRUE);
827#endif
828#ifdef LOOKUP_ORACLE
829 macro_create(US"_HAVE_LKUP_ORACLE", US"y", FALSE, TRUE);
830#endif
831#ifdef LOOKUP_PASSWD
832 macro_create(US"_HAVE_LKUP_PASSWD", US"y", FALSE, TRUE);
833#endif
834#ifdef LOOKUP_PGSQL
835 macro_create(US"_HAVE_LKUP_PGSQL", US"y", FALSE, TRUE);
836#endif
837#ifdef LOOKUP_REDIS
838 macro_create(US"_HAVE_LKUP_REDIS", US"y", FALSE, TRUE);
839#endif
840#ifdef LOOKUP_SQLITE
841 macro_create(US"_HAVE_LKUP_SQLITE", US"y", FALSE, TRUE);
842#endif
843#ifdef LOOKUP_TESTDB
844 macro_create(US"_HAVE_LKUP_TESTDB", US"y", FALSE, TRUE);
845#endif
846#ifdef LOOKUP_WHOSON
847 macro_create(US"_HAVE_LKUP_WHOSON", US"y", FALSE, TRUE);
848#endif
849
850#ifdef TRANSPORT_APPENDFILE
851# ifdef SUPPORT_MAILDIR
852 macro_create(US"_HAVE_TPT_APPEND_MAILDR", US"y", FALSE, TRUE);
853# endif
854# ifdef SUPPORT_MAILSTORE
855 macro_create(US"_HAVE_TPT_APPEND_MAILSTORE", US"y", FALSE, TRUE);
856# endif
857# ifdef SUPPORT_MBX
858 macro_create(US"_HAVE_TPT_APPEND_MBX", US"y", FALSE, TRUE);
859# endif
860#endif
861}
cf00dad6 862
cf00dad6 863
4fab92fb
HSHR
864void
865readconf_options_from_list(optionlist * opts, unsigned nopt, uschar * group)
866{
867int i;
868const uschar * s;
869
870/* The 'previously-defined-substring' rule for macros in config file
871lines is done so for these builtin macros: we know that the table
872we source from is in strict alpha order, hence the builtins portion
873of the macros list is in reverse-alpha (we prepend them) - so longer
874macros that have substrings are always discovered first during
875expansion. */
876
877for (i = 0; i < nopt; i++) if (*(s = opts[i].name) && *s != '*')
878 macro_create(string_sprintf("_OPT_%T_%T", group, s), US"y", FALSE, TRUE);
cf00dad6
PH
879}
880
881
4fab92fb
HSHR
882static void
883readconf_options(void)
884{
885readconf_options_from_list(optionlist_config, nelem(optionlist_config), US"MAIN");
886readconf_options_routers();
887readconf_options_transports();
888readconf_options_auths();
889}
cf00dad6 890
4fab92fb
HSHR
891static void
892macros_create_builtin(void)
893{
894readconf_features();
895readconf_options();
896macros_builtin_created = TRUE;
897}
cf00dad6 898
059ec3d9
PH
899
900/*************************************************
901* Read configuration line *
902*************************************************/
903
904/* A logical line of text is read from the configuration file into the big
905buffer, taking account of macros, .includes, and continuations. The size of
906big_buffer is increased if necessary. The count of configuration lines is
907maintained. Physical input lines starting with # (ignoring leading white space,
908and after macro replacement) and empty logical lines are always ignored.
909Leading and trailing spaces are removed.
910
911If we hit a line of the form "begin xxxx", the xxxx is placed in the
912next_section vector, and the function returns NULL, indicating the end of a
913configuration section. On end-of-file, NULL is returned with next_section
914empty.
915
916Arguments: none
917
918Returns: a pointer to the first non-blank in the line,
919 or NULL if eof or end of section is reached
920*/
921
922static uschar *
923get_config_line(void)
924{
925int startoffset = 0; /* To first non-blank char in logical line */
926int len = 0; /* Of logical line so far */
927int newlen;
928uschar *s, *ss;
929macro_item *m;
930BOOL macro_found;
931
932/* Loop for handling continuation lines, skipping comments, and dealing with
933.include files. */
934
935for (;;)
936 {
937 if (Ufgets(big_buffer+len, big_buffer_size-len, config_file) == NULL)
938 {
939 if (config_file_stack != NULL) /* EOF inside .include */
940 {
f1e894f3 941 (void)fclose(config_file);
059ec3d9
PH
942 config_file = config_file_stack->file;
943 config_filename = config_file_stack->filename;
944 config_lineno = config_file_stack->lineno;
945 config_file_stack = config_file_stack->next;
bf3c2c6b
HSHR
946 if (config_lines)
947 save_config_position(config_filename, config_lineno);
059ec3d9
PH
948 continue;
949 }
950
951 /* EOF at top level */
952
953 if (cstate_stack_ptr >= 0)
954 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
955 "Unexpected end of configuration file: .endif missing");
956
957 if (len != 0) break; /* EOF after continuation */
958 next_section[0] = 0; /* EOF at start of logical line */
959 return NULL;
960 }
961
962 config_lineno++;
963 newlen = len + Ustrlen(big_buffer + len);
964
bf3c2c6b
HSHR
965 if (config_lines && config_lineno == 1)
966 save_config_position(config_filename, config_lineno);
967
059ec3d9
PH
968 /* Handle pathologically long physical lines - yes, it did happen - by
969 extending big_buffer at this point. The code also copes with very long
970 logical lines. */
971
972 while (newlen == big_buffer_size - 1 && big_buffer[newlen - 1] != '\n')
973 {
974 uschar *newbuffer;
975 big_buffer_size += BIG_BUFFER_SIZE;
976 newbuffer = store_malloc(big_buffer_size);
977
978 /* This use of strcpy is OK because we know that the string in the old
979 buffer is shorter than the new buffer. */
980
981 Ustrcpy(newbuffer, big_buffer);
982 store_free(big_buffer);
983 big_buffer = newbuffer;
984 if (Ufgets(big_buffer+newlen, big_buffer_size-newlen, config_file) == NULL)
985 break;
986 newlen += Ustrlen(big_buffer + newlen);
987 }
988
989 /* Find the true start of the physical line - leading spaces are always
990 ignored. */
991
992 ss = big_buffer + len;
993 while (isspace(*ss)) ss++;
994
995 /* Process the physical line for macros. If this is the start of the logical
996 line, skip over initial text at the start of the line if it starts with an
997 upper case character followed by a sequence of name characters and an equals
998 sign, because that is the definition of a new macro, and we don't do
999 replacement therein. */
1000
1001 s = ss;
1002 if (len == 0 && isupper(*s))
1003 {
1004 while (isalnum(*s) || *s == '_') s++;
1005 while (isspace(*s)) s++;
1006 if (*s != '=') s = ss; /* Not a macro definition */
1007 }
1008
4fab92fb
HSHR
1009 /* If the builtin macros are not yet defined, and the line contains an
1010 underscrore followed by an one of the three possible chars used by
1011 builtins, create them. */
1012
1013 if (!macros_builtin_created)
1014 {
1015 const uschar * t, * p;
1016 uschar c;
1017 for (t = s; (p = CUstrchr(t, '_')); t = p+1)
1018 if (c = p[1], c == 'O' || c == 'D' || c == 'H')
1019 {
1020/* fprintf(stderr, "%s: builtins create triggered by '%s'\n", __FUNCTION__, s); */
1021 macros_create_builtin();
1022 break;
1023 }
1024 }
1025
059ec3d9
PH
1026 /* For each defined macro, scan the line (from after XXX= if present),
1027 replacing all occurrences of the macro. */
1028
1029 macro_found = FALSE;
4fab92fb 1030 for (m = macros; m; m = m->next)
059ec3d9
PH
1031 {
1032 uschar *p, *pp;
1033 uschar *t = s;
1034
1035 while ((p = Ustrstr(t, m->name)) != NULL)
1036 {
1037 int moveby;
059ec3d9
PH
1038 int replen = Ustrlen(m->replacement);
1039
4fab92fb 1040/* fprintf(stderr, "%s: matched '%s' in '%s'\n", __FUNCTION__, m->name, t) */
059ec3d9
PH
1041 /* Expand the buffer if necessary */
1042
4fab92fb 1043 while (newlen - m->namelen + replen + 1 > big_buffer_size)
059ec3d9
PH
1044 {
1045 int newsize = big_buffer_size + BIG_BUFFER_SIZE;
1046 uschar *newbuffer = store_malloc(newsize);
1047 memcpy(newbuffer, big_buffer, newlen + 1);
1048 p = newbuffer + (p - big_buffer);
1049 s = newbuffer + (s - big_buffer);
1050 ss = newbuffer + (ss - big_buffer);
1051 t = newbuffer + (t - big_buffer);
1052 big_buffer_size = newsize;
1053 store_free(big_buffer);
1054 big_buffer = newbuffer;
1055 }
1056
1057 /* Shuffle the remaining characters up or down in the buffer before
1058 copying in the replacement text. Don't rescan the replacement for this
1059 same macro. */
1060
4fab92fb
HSHR
1061 pp = p + m->namelen;
1062 if ((moveby = replen - m->namelen) != 0)
059ec3d9
PH
1063 {
1064 memmove(p + replen, pp, (big_buffer + newlen) - pp + 1);
1065 newlen += moveby;
1066 }
1067 Ustrncpy(p, m->replacement, replen);
1068 t = p + replen;
1069 macro_found = TRUE;
1070 }
1071 }
1072
1073 /* An empty macro replacement at the start of a line could mean that ss no
1074 longer points to the first non-blank character. */
1075
1076 while (isspace(*ss)) ss++;
1077
1078 /* Check for comment lines - these are physical lines. */
1079
1080 if (*ss == '#') continue;
1081
1082 /* Handle conditionals, which are also applied to physical lines. Conditions
1083 are of the form ".ifdef ANYTEXT" and are treated as true if any macro
1084 expansion occured on the rest of the line. A preliminary test for the leading
1085 '.' saves effort on most lines. */
1086
1087 if (*ss == '.')
1088 {
1089 int i;
1090
1091 /* Search the list of conditional directives */
1092
1093 for (i = 0; i < cond_list_size; i++)
1094 {
1095 int n;
1096 cond_item *c = cond_list+i;
1097 if (Ustrncmp(ss+1, c->name, c->namelen) != 0) continue;
1098
1099 /* The following character must be white space or end of string */
1100
1101 n = ss[1 + c->namelen];
1102 if (n != ' ' && n != 't' && n != '\n' && n != 0) break;
1103
1104 /* .ifdef and .ifndef push the current state onto the stack, then set
1105 a new one from the table. Stack overflow is an error */
1106
1107 if (c->pushpop > 0)
1108 {
1109 if (cstate_stack_ptr >= CSTATE_STACK_SIZE - 1)
1110 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1111 ".%s nested too deeply", c->name);
1112 cstate_stack[++cstate_stack_ptr] = cstate;
1113 cstate = next_cstate[cstate][macro_found? c->action1 : c->action2];
1114 }
1115
1116 /* For any of the others, stack underflow is an error. The next state
1117 comes either from the stack (.endif) or from the table. */
1118
1119 else
1120 {
1121 if (cstate_stack_ptr < 0)
1122 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1123 ".%s without matching .ifdef", c->name);
1124 cstate = (c->pushpop < 0)? cstate_stack[cstate_stack_ptr--] :
1125 next_cstate[cstate][macro_found? c->action1 : c->action2];
1126 }
1127
1128 /* Having dealt with a directive, break the loop */
1129
1130 break;
1131 }
1132
1133 /* If we have handled a conditional directive, continue with the next
1134 physical line. Otherwise, fall through. */
1135
1136 if (i < cond_list_size) continue;
1137 }
1138
1139 /* If the conditional state is not 0 (actively using these lines), ignore
1140 this input line. */
1141
1142 if (cstate != 0) continue; /* Conditional skip */
1143
1144 /* Handle .include lines - these are also physical lines. */
1145
1146 if (Ustrncmp(ss, ".include", 8) == 0 &&
1147 (isspace(ss[8]) ||
1148 (Ustrncmp(ss+8, "_if_exists", 10) == 0 && isspace(ss[18]))))
1149 {
1150 uschar *t;
1151 int include_if_exists = isspace(ss[8])? 0 : 10;
1152 config_file_item *save;
1153 struct stat statbuf;
1154
1155 ss += 9 + include_if_exists;
1156 while (isspace(*ss)) ss++;
1157 t = ss + Ustrlen(ss);
1158 while (t > ss && isspace(t[-1])) t--;
1159 if (*ss == '\"' && t[-1] == '\"')
1160 {
1161 ss++;
1162 t--;
1163 }
1164 *t = 0;
1165
145396a6
PH
1166 if (*ss != '/')
1167 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, ".include specifies a non-"
1168 "absolute path \"%s\"", ss);
1169
059ec3d9
PH
1170 if (include_if_exists != 0 && (Ustat(ss, &statbuf) != 0)) continue;
1171
bf3c2c6b
HSHR
1172 if (config_lines)
1173 save_config_position(config_filename, config_lineno);
059ec3d9
PH
1174 save = store_get(sizeof(config_file_item));
1175 save->next = config_file_stack;
1176 config_file_stack = save;
1177 save->file = config_file;
1178 save->filename = config_filename;
1179 save->lineno = config_lineno;
1180
4fab92fb 1181 if (!(config_file = Ufopen(ss, "rb")))
059ec3d9
PH
1182 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "failed to open included "
1183 "configuration file %s", ss);
4fab92fb 1184
059ec3d9
PH
1185 config_filename = string_copy(ss);
1186 config_lineno = 0;
1187 continue;
1188 }
1189
1190 /* If this is the start of the logical line, remember where the non-blank
1191 data starts. Otherwise shuffle down continuation lines to remove leading
1192 white space. */
1193
1194 if (len == 0)
1195 startoffset = ss - big_buffer;
1196 else
1197 {
1198 s = big_buffer + len;
1199 if (ss > s)
1200 {
1201 memmove(s, ss, (newlen - len) - (ss - s) + 1);
1202 newlen -= ss - s;
1203 }
1204 }
1205
1206 /* Accept the new addition to the line. Remove trailing white space. */
1207
1208 len = newlen;
1209 while (len > 0 && isspace(big_buffer[len-1])) len--;
1210 big_buffer[len] = 0;
1211
1212 /* We are done if the line does not end in backslash and contains some data.
1213 Empty logical lines are ignored. For continuations, remove the backslash and
1214 go round the loop to read the continuation line. */
1215
1216 if (len > 0)
1217 {
1218 if (big_buffer[len-1] != '\\') break; /* End of logical line */
1219 big_buffer[--len] = 0; /* Remove backslash */
1220 }
1221 } /* Loop for reading multiple physical lines */
1222
1223/* We now have a logical line. Test for the end of a configuration section (or,
1224more accurately, for the start of the next section). Place the name of the next
1225section in next_section, and return NULL. If the name given is longer than
1226next_section, truncate it. It will be unrecognized later, because all the known
1227section names do fit. Leave space for pluralizing. */
1228
1229s = big_buffer + startoffset; /* First non-space character */
bf3c2c6b
HSHR
1230
1231if (config_lines)
1232 save_config_line(s);
1233
059ec3d9
PH
1234if (strncmpic(s, US"begin ", 6) == 0)
1235 {
1236 s += 6;
1237 while (isspace(*s)) s++;
1238 if (big_buffer + len - s > sizeof(next_section) - 2)
1239 s[sizeof(next_section) - 2] = 0;
1240 Ustrcpy(next_section, s);
1241 return NULL;
1242 }
1243
1244/* Return the first non-blank character. */
1245
1246return s;
1247}
1248
1249
1250
1251/*************************************************
1252* Read a name *
1253*************************************************/
1254
1255/* The yield is the pointer to the next uschar. Names longer than the
1256output space are silently truncated. This function is also used from acl.c when
1257parsing ACLs.
1258
1259Arguments:
1260 name where to put the name
1261 len length of name
1262 s input pointer
1263
1264Returns: new input pointer
1265*/
1266
1267uschar *
1268readconf_readname(uschar *name, int len, uschar *s)
1269{
1270int p = 0;
1271while (isspace(*s)) s++;
1272if (isalpha(*s))
1273 {
1274 while (isalnum(*s) || *s == '_')
1275 {
1276 if (p < len-1) name[p++] = *s;
1277 s++;
1278 }
1279 }
1280name[p] = 0;
1281while (isspace(*s)) s++;
1282return s;
1283}
1284
1285
1286
1287
1288/*************************************************
1289* Read a time value *
1290*************************************************/
1291
1292/* This function is also called from outside, to read argument
1293time values. The format of a time value is:
1294
1295 [<n>w][<n>d][<n>h][<n>m][<n>s]
1296
1297as long as at least one is present. If a format error is encountered,
1298return a negative value. The value must be terminated by the given
1299terminator.
1300
1301Arguments:
1302 s input pointer
1303 terminator required terminating character
1304 return_msec if TRUE, allow fractional seconds and return milliseconds
1305
1306Returns: the time value, or -1 on syntax error
1307 value is seconds if return_msec is FALSE
1308 value is milliseconds if return_msec is TRUE
1309*/
1310
1311int
1ad6489e 1312readconf_readtime(const uschar *s, int terminator, BOOL return_msec)
059ec3d9
PH
1313{
1314int yield = 0;
1315for (;;)
1316 {
1317 int value, count;
1318 double fraction;
1319
1320 if (!isdigit(*s)) return -1;
1ad6489e 1321 (void)sscanf(CCS s, "%d%n", &value, &count);
059ec3d9
PH
1322 s += count;
1323
1324 switch (*s)
1325 {
1326 case 'w': value *= 7;
1327 case 'd': value *= 24;
1328 case 'h': value *= 60;
1329 case 'm': value *= 60;
1330 case 's': s++;
1331 break;
1332
1333 case '.':
1334 if (!return_msec) return -1;
1ad6489e 1335 (void)sscanf(CCS s, "%lf%n", &fraction, &count);
059ec3d9
PH
1336 s += count;
1337 if (*s++ != 's') return -1;
1338 yield += (int)(fraction * 1000.0);
1339 break;
1340
1341 default: return -1;
1342 }
1343
1344 if (return_msec) value *= 1000;
1345 yield += value;
1346 if (*s == terminator) return yield;
1347 }
1348/* Control never reaches here. */
1349}
1350
1351
1352
1353/*************************************************
1354* Read a fixed point value *
1355*************************************************/
1356
1357/* The value is returned *1000
1358
1359Arguments:
1360 s input pointer
1361 terminator required terminator
1362
1363Returns: the value, or -1 on error
1364*/
1365
1366static int
55414b25 1367readconf_readfixed(const uschar *s, int terminator)
059ec3d9
PH
1368{
1369int yield = 0;
1370int value, count;
1371if (!isdigit(*s)) return -1;
1372(void)sscanf(CS s, "%d%n", &value, &count);
1373s += count;
1374yield = value * 1000;
1375if (*s == '.')
1376 {
1377 int m = 100;
1378 while (isdigit((*(++s))))
1379 {
1380 yield += (*s - '0') * m;
1381 m /= 10;
1382 }
1383 }
1384
1385return (*s == terminator)? yield : (-1);
1386}
1387
1388
1389
1390/*************************************************
1391* Find option in list *
1392*************************************************/
1393
1394/* The lists are always in order, so binary chop can be used.
1395
1396Arguments:
1397 name the option name to search for
1398 ol the first entry in the option list
1399 last one more than the offset of the last entry in the option list
1400
1401Returns: pointer to an option entry, or NULL if not found
1402*/
1403
1404static optionlist *
1405find_option(uschar *name, optionlist *ol, int last)
1406{
1407int first = 0;
1408while (last > first)
1409 {
1410 int middle = (first + last)/2;
1411 int c = Ustrcmp(name, ol[middle].name);
4fab92fb 1412
059ec3d9 1413 if (c == 0) return ol + middle;
4fab92fb
HSHR
1414 else if (c > 0) first = middle + 1;
1415 else last = middle;
059ec3d9
PH
1416 }
1417return NULL;
1418}
1419
1420
1421
1422/*************************************************
1423* Find a set flag in option list *
1424*************************************************/
1425
1426/* Because some versions of Unix make no restrictions on the values of uids and
1427gids (even negative ones), we cannot represent "unset" by a special value.
1428There is therefore a separate boolean variable for each one indicating whether
1429a value is set or not. This function returns a pointer to the boolean, given
1430the original option name. It is a major disaster if the flag cannot be found.
1431
1432Arguments:
1433 name the name of the uid or gid option
1434 oltop points to the start of the relevant option list
1435 last one more than the offset of the last item in the option list
1436 data_block NULL when reading main options => data values in the option
1437 list are absolute addresses; otherwise they are byte offsets
1438 in data_block (used for driver options)
1439
1440Returns: a pointer to the boolean flag.
1441*/
1442
1443static BOOL *
1444get_set_flag(uschar *name, optionlist *oltop, int last, void *data_block)
1445{
1446optionlist *ol;
1447uschar name2[64];
1448sprintf(CS name2, "*set_%.50s", name);
1449ol = find_option(name2, oltop, last);
1450if (ol == NULL) log_write(0, LOG_MAIN|LOG_PANIC_DIE,
1451 "Exim internal error: missing set flag for %s", name);
1452return (data_block == NULL)? (BOOL *)(ol->value) :
1453 (BOOL *)((uschar *)data_block + (long int)(ol->value));
1454}
1455
1456
1457
1458
1459/*************************************************
1460* Output extra characters message and die *
1461*************************************************/
1462
1463/* Called when an option line has junk on the end. Sometimes this is because
1464the sysadmin thinks comments are permitted.
1465
1466Arguments:
1467 s points to the extra characters
1468 t1..t3 strings to insert in the log message
1469
1470Returns: doesn't return; dies
1471*/
1472
1473static void
55414b25 1474extra_chars_error(const uschar *s, const uschar *t1, const uschar *t2, const uschar *t3)
059ec3d9
PH
1475{
1476uschar *comment = US"";
1477if (*s == '#') comment = US" (# is comment only at line start)";
1478log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1479 "extra characters follow %s%s%s%s", t1, t2, t3, comment);
1480}
1481
1482
1483
1484/*************************************************
1485* Read rewrite information *
1486*************************************************/
1487
1488/* Each line of rewrite information contains:
1489
1490. A complete address in the form user@domain, possibly with
1491 leading * for each part; or alternatively, a regex.
1492
1493. A replacement string (which will be expanded).
1494
1495. An optional sequence of one-letter flags, indicating which
1496 headers etc. to apply this rule to.
1497
1498All this is decoded and placed into a control block. The OR of the flags is
1499maintained in a common word.
1500
1501Arguments:
1502 p points to the string that makes up the rule
1503 existflags points to the overall flag word
1504 isglobal TRUE if reading global rewrite rules
1505
1506Returns: the control block for the parsed rule.
1507*/
1508
1509static rewrite_rule *
55414b25 1510readconf_one_rewrite(const uschar *p, int *existflags, BOOL isglobal)
059ec3d9
PH
1511{
1512rewrite_rule *next = store_get(sizeof(rewrite_rule));
1513
1514next->next = NULL;
1515next->key = string_dequote(&p);
1516
1517while (isspace(*p)) p++;
1518if (*p == 0)
1519 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1520 "missing rewrite replacement string");
1521
1522next->flags = 0;
1523next->replacement = string_dequote(&p);
1524
1525while (*p != 0) switch (*p++)
1526 {
1527 case ' ': case '\t': break;
1528
1529 case 'q': next->flags |= rewrite_quit; break;
1530 case 'w': next->flags |= rewrite_whole; break;
1531
1532 case 'h': next->flags |= rewrite_all_headers; break;
1533 case 's': next->flags |= rewrite_sender; break;
1534 case 'f': next->flags |= rewrite_from; break;
1535 case 't': next->flags |= rewrite_to; break;
1536 case 'c': next->flags |= rewrite_cc; break;
1537 case 'b': next->flags |= rewrite_bcc; break;
1538 case 'r': next->flags |= rewrite_replyto; break;
1539
1540 case 'E': next->flags |= rewrite_all_envelope; break;
1541 case 'F': next->flags |= rewrite_envfrom; break;
1542 case 'T': next->flags |= rewrite_envto; break;
1543
1544 case 'Q': next->flags |= rewrite_qualify; break;
1545 case 'R': next->flags |= rewrite_repeat; break;
1546
1547 case 'S':
1548 next->flags |= rewrite_smtp;
1549 if (next->key[0] != '^' && Ustrncmp(next->key, "\\N^", 3) != 0)
1550 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1551 "rewrite rule has the S flag but is not a regular expression");
1552 break;
1553
1554 default:
1555 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1556 "unknown rewrite flag character '%c' "
1557 "(could be missing quotes round replacement item)", p[-1]);
1558 break;
1559 }
1560
1561/* If no action flags are set, set all the "normal" rewrites. */
1562
1563if ((next->flags & (rewrite_all | rewrite_smtp)) == 0)
1564 next->flags |= isglobal? rewrite_all : rewrite_all_headers;
1565
1566/* Remember which exist, for optimization, and return the rule */
1567
1568*existflags |= next->flags;
1569return next;
1570}
1571
1572
1573
1574
1575/*************************************************
1576* Read global rewrite information *
1577*************************************************/
1578
1579/* Each line is a single rewrite rule; it is parsed into a control block
1580by readconf_one_rewrite(), and its flags are ORed into the global flag
1581word rewrite_existflags. */
1582
1583void
1584readconf_rewrites(void)
1585{
1586rewrite_rule **chain = &global_rewrite_rules;
1587uschar *p;
1588
1589while ((p = get_config_line()) != NULL)
1590 {
1591 rewrite_rule *next = readconf_one_rewrite(p, &rewrite_existflags, TRUE);
1592 *chain = next;
1593 chain = &(next->next);
1594 }
1595}
1596
1597
1598
1599/*************************************************
1600* Read a string *
1601*************************************************/
1602
1603/* Strings are read into the normal store pool. As long we aren't too
1604near the end of the current block, the string will just use what is necessary
1605on the top of the stacking pool, because string_cat() uses the extension
1606mechanism.
1607
1608Argument:
1609 s the rest of the input line
1610 name the option name (for errors)
1611
1612Returns: pointer to the string
1613*/
1614
1615static uschar *
55414b25 1616read_string(const uschar *s, const uschar *name)
059ec3d9
PH
1617{
1618uschar *yield;
55414b25 1619const uschar *ss;
059ec3d9
PH
1620
1621if (*s != '\"') return string_copy(s);
1622
1623ss = s;
1624yield = string_dequote(&s);
1625
1626if (s == ss+1 || s[-1] != '\"')
1627 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1628 "missing quote at end of string value for %s", name);
1629
1630if (*s != 0) extra_chars_error(s, US"string value for ", name, US"");
1631
1632return yield;
1633}
1634
1635
1636/*************************************************
1ad6489e
JH
1637* Custom-handler options *
1638*************************************************/
1639static void
1640fn_smtp_receive_timeout(const uschar * name, const uschar * str)
1641{
1ad6489e
JH
1642if (*str == '$')
1643 smtp_receive_timeout_s = string_copy(str);
1644else
1645 {
1646 /* "smtp_receive_timeout", opt_time, &smtp_receive_timeout */
1647 smtp_receive_timeout = readconf_readtime(str, 0, FALSE);
1648 if (smtp_receive_timeout < 0)
1649 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "invalid time value for %s",
1650 name);
1651 }
1652}
1653
1654/*************************************************
059ec3d9
PH
1655* Handle option line *
1656*************************************************/
1657
1658/* This function is called from several places to process a line containing the
1659setting of an option. The first argument is the line to be decoded; it has been
1660checked not to be empty and not to start with '#'. Trailing newlines and white
1661space have been removed. The second argument is a pointer to the list of
1662variable names that are to be recognized, together with their types and
1663locations, and the third argument gives the number of entries in the list.
1664
1665The fourth argument is a pointer to a data block. If it is NULL, then the data
1666values in the options list are absolute addresses. Otherwise, they are byte
1667offsets in the data block.
1668
1669String option data may continue onto several lines; this function reads further
1670data from config_file if necessary.
1671
1672The yield of this function is normally zero. If a string continues onto
1673multiple lines, then the data value is permitted to be followed by a comma
1674or a semicolon (for use in drivers) and the yield is that character.
1675
1676Arguments:
1677 buffer contains the configuration line to be handled
1678 oltop points to the start of the relevant option list
1679 last one more than the offset of the last item in the option list
1680 data_block NULL when reading main options => data values in the option
1681 list are absolute addresses; otherwise they are byte offsets
1682 in data_block when they have opt_public set; otherwise
1683 they are byte offsets in data_block->options_block.
1684 unknown_txt format string to use in panic message for unknown option;
1685 must contain %s for option name
1686 if given as NULL, don't panic on unknown option
1687
1688Returns: TRUE if an option was read successfully,
1689 FALSE false for an unknown option if unknown_txt == NULL,
1690 otherwise panic and die on an unknown option
1691*/
1692
1693static BOOL
1694readconf_handle_option(uschar *buffer, optionlist *oltop, int last,
1695 void *data_block, uschar *unknown_txt)
1696{
1697int ptr = 0;
1698int offset = 0;
1699int n, count, type, value;
1700int issecure = 0;
1701uid_t uid;
1702gid_t gid;
1703BOOL boolvalue = TRUE;
1704BOOL freesptr = TRUE;
1705optionlist *ol, *ol2;
1706struct passwd *pw;
1707void *reset_point;
1708int intbase = 0;
1709uschar *inttype = US"";
1710uschar *sptr;
1711uschar *s = buffer;
532be449 1712uschar **str_target;
059ec3d9
PH
1713uschar name[64];
1714uschar name2[64];
1715
1716/* There may be leading spaces; thereafter, we expect an option name starting
1717with a letter. */
1718
1719while (isspace(*s)) s++;
1720if (!isalpha(*s))
1721 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "option setting expected: %s", s);
1722
1723/* Read the name of the option, and skip any subsequent white space. If
1724it turns out that what we read was "hide", set the flag indicating that
1725this is a secure option, and loop to read the next word. */
1726
1727for (n = 0; n < 2; n++)
1728 {
1729 while (isalnum(*s) || *s == '_')
1730 {
1731 if (ptr < sizeof(name)-1) name[ptr++] = *s;
1732 s++;
1733 }
1734 name[ptr] = 0;
1735 while (isspace(*s)) s++;
1736 if (Ustrcmp(name, "hide") != 0) break;
1737 issecure = opt_secure;
1738 ptr = 0;
1739 }
1740
1741/* Deal with "no_" or "not_" here for booleans */
1742
1743if (Ustrncmp(name, "no_", 3) == 0)
1744 {
1745 boolvalue = FALSE;
1746 offset = 3;
1747 }
1748
1749if (Ustrncmp(name, "not_", 4) == 0)
1750 {
1751 boolvalue = FALSE;
1752 offset = 4;
1753 }
1754
1755/* Search the list for the given name. A non-existent name, or an option that
1756is set twice, is a disaster. */
1757
4fab92fb 1758if (!(ol = find_option(name + offset, oltop, last)))
059ec3d9
PH
1759 {
1760 if (unknown_txt == NULL) return FALSE;
1761 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, CS unknown_txt, name);
1762 }
1763
846726c5
JH
1764if ((ol->type & opt_set) && !(ol->type & (opt_rep_con | opt_rep_str)))
1765 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1766 "\"%s\" option set for the second time", name);
059ec3d9
PH
1767
1768ol->type |= opt_set | issecure;
1769type = ol->type & opt_mask;
1770
1771/* Types with data values must be followed by '='; the "no[t]_" prefix
1772applies only to boolean values. */
1773
1774if (type < opt_bool || type > opt_bool_last)
1775 {
1776 if (offset != 0)
1777 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1778 "negation prefix applied to a non-boolean option");
1779 if (*s == 0)
1780 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1781 "unexpected end of line (data missing) after %s", name);
1782 if (*s != '=')
1783 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "missing \"=\" after %s", name);
1784 }
1785
1786/* If a boolean wasn't preceded by "no[t]_" it can be followed by = and
9c695f6d 1787true/false/yes/no, or, in the case of opt_expand_bool, a general string that
059ec3d9
PH
1788ultimately expands to one of those values. */
1789
1790else if (*s != 0 && (offset != 0 || *s != '='))
1791 extra_chars_error(s, US"boolean option ", name, US"");
1792
1793/* Skip white space after = */
1794
1795if (*s == '=') while (isspace((*(++s))));
1796
1797/* If there is a data block and the opt_public flag is not set, change
1798the data block pointer to the private options block. */
1799
1800if (data_block != NULL && (ol->type & opt_public) == 0)
1801 data_block = (void *)(((driver_instance *)data_block)->options_block);
1802
1803/* Now get the data according to the type. */
1804
1805switch (type)
1806 {
1807 /* If a string value is not enclosed in quotes, it consists of
1808 the rest of the current line, verbatim. Otherwise, string escapes
1809 are processed.
1810
1811 A transport is specified as a string, which is then looked up in the
1812 list of transports. A search type is specified as one of a number of
1813 known strings.
1814
1815 A set or rewrite rules for a driver is specified as a string, which is
1816 then parsed into a suitable chain of control blocks.
1817
1818 Uids and gids are specified as strings which are then looked up in the
1819 passwd file. Lists of uids and gids are similarly specified as colon-
1820 separated strings. */
1821
1822 case opt_stringptr:
1823 case opt_uid:
1824 case opt_gid:
1825 case opt_expand_uid:
1826 case opt_expand_gid:
1827 case opt_uidlist:
1828 case opt_gidlist:
1829 case opt_rewrite:
1830
1831 reset_point = sptr = read_string(s, name);
1832
1833 /* Having read a string, we now have several different ways of using it,
1834 depending on the data type, so do another switch. If keeping the actual
1835 string is not required (because it is interpreted), freesptr is set TRUE,
1836 and at the end we reset the pool. */
1837
1838 switch (type)
1839 {
1840 /* If this was a string, set the variable to point to the new string,
1841 and set the flag so its store isn't reclaimed. If it was a list of rewrite
1842 rules, we still keep the string (for printing), and parse the rules into a
1843 control block and flags word. */
1844
1845 case opt_stringptr:
4fab92fb
HSHR
1846 str_target = data_block ? USS (US data_block + (long int)(ol->value))
1847 : USS (ol->value);
846726c5 1848 if (ol->type & opt_rep_con)
532be449 1849 {
4fab92fb 1850 uschar * saved_condition;
6a8de854
PP
1851 /* We already have a condition, we're conducting a crude hack to let
1852 multiple condition rules be chained together, despite storing them in
1853 text form. */
4fab92fb
HSHR
1854 *str_target = string_copy_malloc( (saved_condition = *str_target)
1855 ? string_sprintf("${if and{{bool_lax{%s}}{bool_lax{%s}}}}",
1856 saved_condition, sptr)
1857 : sptr);
846726c5
JH
1858 /* TODO(pdp): there is a memory leak here and just below
1859 when we set 3 or more conditions; I still don't
1860 understand the store mechanism enough to know
1861 what's the safe way to free content from an earlier store.
6a8de854
PP
1862 AFAICT, stores stack, so freeing an early stored item also stores
1863 all data alloc'd after it. If we knew conditions were adjacent,
1864 we could survive that, but we don't. So I *think* we need to take
1865 another bit from opt_type to indicate "malloced"; this seems like
1866 quite a hack, especially for this one case. It also means that
1867 we can't ever reclaim the store from the *first* condition.
1868
1869 Because we only do this once, near process start-up, I'm prepared to
1870 let this slide for the time being, even though it rankles. */
532be449 1871 }
76146973
JH
1872 else if (ol->type & opt_rep_str)
1873 {
2ad78978
JH
1874 uschar sep_o = Ustrncmp(name, "headers_add", 11)==0 ? '\n' : ':';
1875 int sep_i = -(int)sep_o;
55414b25 1876 const uschar * list = sptr;
2ad78978
JH
1877 uschar * s;
1878 uschar * list_o = *str_target;
1879
1880 while ((s = string_nextinlist(&list, &sep_i, NULL, 0)))
1881 list_o = string_append_listele(list_o, sep_o, s);
1882 if (list_o)
1883 *str_target = string_copy_malloc(list_o);
76146973 1884 }
532be449
PP
1885 else
1886 {
1887 *str_target = sptr;
1888 freesptr = FALSE;
1889 }
1890 break;
1891
059ec3d9 1892 case opt_rewrite:
4fab92fb
HSHR
1893 if (data_block)
1894 *USS (US data_block + (long int)(ol->value)) = sptr;
059ec3d9 1895 else
4fab92fb 1896 *USS (ol->value) = sptr;
059ec3d9
PH
1897 freesptr = FALSE;
1898 if (type == opt_rewrite)
1899 {
1900 int sep = 0;
1901 int *flagptr;
1902 uschar *p = sptr;
1903 rewrite_rule **chain;
1904 optionlist *ol3;
1905
1906 sprintf(CS name2, "*%.50s_rules", name);
1907 ol2 = find_option(name2, oltop, last);
1908 sprintf(CS name2, "*%.50s_flags", name);
1909 ol3 = find_option(name2, oltop, last);
1910
1911 if (ol2 == NULL || ol3 == NULL)
1912 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1913 "rewrite rules not available for driver");
1914
1915 if (data_block == NULL)
1916 {
1917 chain = (rewrite_rule **)(ol2->value);
1918 flagptr = (int *)(ol3->value);
1919 }
1920 else
1921 {
1922 chain = (rewrite_rule **)((uschar *)data_block + (long int)(ol2->value));
1923 flagptr = (int *)((uschar *)data_block + (long int)(ol3->value));
1924 }
1925
55414b25 1926 while ((p = string_nextinlist(CUSS &sptr, &sep, big_buffer, BIG_BUFFER_SIZE)))
059ec3d9
PH
1927 {
1928 rewrite_rule *next = readconf_one_rewrite(p, flagptr, FALSE);
1929 *chain = next;
1930 chain = &(next->next);
1931 }
1932
1933 if ((*flagptr & (rewrite_all_envelope | rewrite_smtp)) != 0)
1934 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "rewrite rule specifies a "
1935 "non-header rewrite - not allowed at transport time -");
1936 }
1937 break;
1938
1939 /* If it was an expanded uid, see if there is any expansion to be
1940 done by checking for the presence of a $ character. If there is, save it
1941 in the corresponding *expand_user option field. Otherwise, fall through
1942 to treat it as a fixed uid. Ensure mutual exclusivity of the two kinds
1943 of data. */
1944
1945 case opt_expand_uid:
1946 sprintf(CS name2, "*expand_%.50s", name);
1947 ol2 = find_option(name2, oltop, last);
1948 if (ol2 != NULL)
1949 {
1950 uschar *ss = (Ustrchr(sptr, '$') != NULL)? sptr : NULL;
1951
1952 if (data_block == NULL)
1953 *((uschar **)(ol2->value)) = ss;
1954 else
1955 *((uschar **)((uschar *)data_block + (long int)(ol2->value))) = ss;
1956
1957 if (ss != NULL)
1958 {
1959 *(get_set_flag(name, oltop, last, data_block)) = FALSE;
1960 freesptr = FALSE;
1961 break;
1962 }
1963 }
1964
1965 /* Look up a fixed uid, and also make use of the corresponding gid
1966 if a passwd entry is returned and the gid has not been set. */
1967
1968 case opt_uid:
1969 if (!route_finduser(sptr, &pw, &uid))
1970 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "user %s was not found", sptr);
1971 if (data_block == NULL)
1972 *((uid_t *)(ol->value)) = uid;
1973 else
1974 *((uid_t *)((uschar *)data_block + (long int)(ol->value))) = uid;
1975
1976 /* Set the flag indicating a fixed value is set */
1977
1978 *(get_set_flag(name, oltop, last, data_block)) = TRUE;
1979
1980 /* Handle matching gid if we have a passwd entry: done by finding the
1981 same name with terminating "user" changed to "group"; if not found,
1982 ignore. Also ignore if the value is already set. */
1983
1984 if (pw == NULL) break;
1985 Ustrcpy(name+Ustrlen(name)-4, "group");
1986 ol2 = find_option(name, oltop, last);
1987 if (ol2 != NULL && ((ol2->type & opt_mask) == opt_gid ||
1988 (ol2->type & opt_mask) == opt_expand_gid))
1989 {
1990 BOOL *set_flag = get_set_flag(name, oltop, last, data_block);
1991 if (! *set_flag)
1992 {
1993 if (data_block == NULL)
1994 *((gid_t *)(ol2->value)) = pw->pw_gid;
1995 else
1996 *((gid_t *)((uschar *)data_block + (long int)(ol2->value))) = pw->pw_gid;
1997 *set_flag = TRUE;
1998 }
1999 }
2000 break;
2001
2002 /* If it was an expanded gid, see if there is any expansion to be
2003 done by checking for the presence of a $ character. If there is, save it
2004 in the corresponding *expand_user option field. Otherwise, fall through
2005 to treat it as a fixed gid. Ensure mutual exclusivity of the two kinds
2006 of data. */
2007
2008 case opt_expand_gid:
2009 sprintf(CS name2, "*expand_%.50s", name);
2010 ol2 = find_option(name2, oltop, last);
2011 if (ol2 != NULL)
2012 {
2013 uschar *ss = (Ustrchr(sptr, '$') != NULL)? sptr : NULL;
2014
2015 if (data_block == NULL)
2016 *((uschar **)(ol2->value)) = ss;
2017 else
2018 *((uschar **)((uschar *)data_block + (long int)(ol2->value))) = ss;
2019
2020 if (ss != NULL)
2021 {
2022 *(get_set_flag(name, oltop, last, data_block)) = FALSE;
2023 freesptr = FALSE;
2024 break;
2025 }
2026 }
2027
2028 /* Handle freestanding gid */
2029
2030 case opt_gid:
2031 if (!route_findgroup(sptr, &gid))
2032 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "group %s was not found", sptr);
2033 if (data_block == NULL)
2034 *((gid_t *)(ol->value)) = gid;
2035 else
2036 *((gid_t *)((uschar *)data_block + (long int)(ol->value))) = gid;
2037 *(get_set_flag(name, oltop, last, data_block)) = TRUE;
2038 break;
2039
2040 /* If it was a uid list, look up each individual entry, and build
2041 a vector of uids, with a count in the first element. Put the vector
2042 in malloc store so we can free the string. (We are reading into
2043 permanent store already.) */
2044
2045 case opt_uidlist:
2046 {
2047 int count = 1;
2048 uid_t *list;
2049 int ptr = 0;
55414b25
JH
2050 const uschar *p;
2051 const uschar *op = expand_string (sptr);
0925ede6
PH
2052
2053 if (op == NULL)
2054 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "failed to expand %s: %s",
2055 name, expand_string_message);
059ec3d9 2056
0925ede6 2057 p = op;
059ec3d9 2058 if (*p != 0) count++;
0925ede6 2059 while (*p != 0) if (*p++ == ':' && *p != 0) count++;
059ec3d9
PH
2060 list = store_malloc(count*sizeof(uid_t));
2061 list[ptr++] = (uid_t)(count - 1);
2062
2063 if (data_block == NULL)
2064 *((uid_t **)(ol->value)) = list;
2065 else
2066 *((uid_t **)((uschar *)data_block + (long int)(ol->value))) = list;
2067
0925ede6 2068 p = op;
059ec3d9
PH
2069 while (count-- > 1)
2070 {
2071 int sep = 0;
2072 (void)string_nextinlist(&p, &sep, big_buffer, BIG_BUFFER_SIZE);
2073 if (!route_finduser(big_buffer, NULL, &uid))
2074 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "user %s was not found",
2075 big_buffer);
2076 list[ptr++] = uid;
2077 }
2078 }
2079 break;
2080
2081 /* If it was a gid list, look up each individual entry, and build
2082 a vector of gids, with a count in the first element. Put the vector
2083 in malloc store so we can free the string. (We are reading into permanent
2084 store already.) */
2085
2086 case opt_gidlist:
2087 {
2088 int count = 1;
2089 gid_t *list;
2090 int ptr = 0;
55414b25
JH
2091 const uschar *p;
2092 const uschar *op = expand_string (sptr);
0925ede6
PH
2093
2094 if (op == NULL)
2095 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "failed to expand %s: %s",
2096 name, expand_string_message);
059ec3d9 2097
0925ede6 2098 p = op;
059ec3d9 2099 if (*p != 0) count++;
0925ede6 2100 while (*p != 0) if (*p++ == ':' && *p != 0) count++;
059ec3d9
PH
2101 list = store_malloc(count*sizeof(gid_t));
2102 list[ptr++] = (gid_t)(count - 1);
2103
2104 if (data_block == NULL)
2105 *((gid_t **)(ol->value)) = list;
2106 else
2107 *((gid_t **)((uschar *)data_block + (long int)(ol->value))) = list;
2108
0925ede6 2109 p = op;
059ec3d9
PH
2110 while (count-- > 1)
2111 {
2112 int sep = 0;
2113 (void)string_nextinlist(&p, &sep, big_buffer, BIG_BUFFER_SIZE);
2114 if (!route_findgroup(big_buffer, &gid))
2115 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "group %s was not found",
2116 big_buffer);
2117 list[ptr++] = gid;
2118 }
2119 }
2120 break;
2121 }
2122
2123 /* Release store if the value of the string doesn't need to be kept. */
2124
2125 if (freesptr) store_reset(reset_point);
2126 break;
2127
2128 /* Expanded boolean: if no characters follow, or if there are no dollar
2129 characters, this is a fixed-valued boolean, and we fall through. Otherwise,
2130 save the string for later expansion in the alternate place. */
2131
2132 case opt_expand_bool:
2133 if (*s != 0 && Ustrchr(s, '$') != 0)
2134 {
2135 sprintf(CS name2, "*expand_%.50s", name);
2136 ol2 = find_option(name2, oltop, last);
2137 if (ol2 != NULL)
2138 {
2139 reset_point = sptr = read_string(s, name);
2140 if (data_block == NULL)
2141 *((uschar **)(ol2->value)) = sptr;
2142 else
2143 *((uschar **)((uschar *)data_block + (long int)(ol2->value))) = sptr;
2144 freesptr = FALSE;
2145 break;
2146 }
2147 }
2148 /* Fall through */
2149
2150 /* Boolean: if no characters follow, the value is boolvalue. Otherwise
2151 look for yes/not/true/false. Some booleans are stored in a single bit in
2152 a single int. There's a special fudge for verify settings; without a suffix
2153 they set both xx_sender and xx_recipient. The table points to the sender
2154 value; search subsequently for the recipient. There's another special case:
2155 opt_bool_set also notes when a boolean has been set. */
2156
2157 case opt_bool:
2158 case opt_bit:
2159 case opt_bool_verify:
2160 case opt_bool_set:
2161 if (*s != 0)
2162 {
2163 s = readconf_readname(name2, 64, s);
2164 if (strcmpic(name2, US"true") == 0 || strcmpic(name2, US"yes") == 0)
2165 boolvalue = TRUE;
2166 else if (strcmpic(name2, US"false") == 0 || strcmpic(name2, US"no") == 0)
2167 boolvalue = FALSE;
2168 else log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
2169 "\"%s\" is not a valid value for the \"%s\" option", name2, name);
2170 if (*s != 0) extra_chars_error(s, string_sprintf("\"%s\" ", name2),
2171 US"for boolean option ", name);
2172 }
2173
2174 /* Handle single-bit type. */
2175
2176 if (type == opt_bit)
2177 {
2178 int bit = 1 << ((ol->type >> 16) & 31);
2179 int *ptr = (data_block == NULL)?
2180 (int *)(ol->value) :
2181 (int *)((uschar *)data_block + (long int)ol->value);
2182 if (boolvalue) *ptr |= bit; else *ptr &= ~bit;
2183 break;
2184 }
2185
2186 /* Handle full BOOL types */
2187
2188 if (data_block == NULL)
2189 *((BOOL *)(ol->value)) = boolvalue;
2190 else
2191 *((BOOL *)((uschar *)data_block + (long int)(ol->value))) = boolvalue;
2192
2193 /* Verify fudge */
2194
2195 if (type == opt_bool_verify)
2196 {
2197 sprintf(CS name2, "%.50s_recipient", name + offset);
2198 ol2 = find_option(name2, oltop, last);
2199 if (ol2 != NULL)
2200 {
2201 if (data_block == NULL)
2202 *((BOOL *)(ol2->value)) = boolvalue;
2203 else
2204 *((BOOL *)((uschar *)data_block + (long int)(ol2->value))) = boolvalue;
2205 }
2206 }
2207
2208 /* Note that opt_bool_set type is set, if there is somewhere to do so */
2209
2210 else if (type == opt_bool_set)
2211 {
2212 sprintf(CS name2, "*set_%.50s", name + offset);
2213 ol2 = find_option(name2, oltop, last);
2214 if (ol2 != NULL)
2215 {
2216 if (data_block == NULL)
2217 *((BOOL *)(ol2->value)) = TRUE;
2218 else
2219 *((BOOL *)((uschar *)data_block + (long int)(ol2->value))) = TRUE;
2220 }
2221 }
2222 break;
2223
2224 /* Octal integer */
2225
2226 case opt_octint:
2227 intbase = 8;
2228 inttype = US"octal ";
2229
2230 /* Integer: a simple(ish) case; allow octal and hex formats, and
4fab92fb 2231 suffixes K, M and G. The different types affect output, not input. */
059ec3d9
PH
2232
2233 case opt_mkint:
2234 case opt_int:
2235 {
2236 uschar *endptr;
7e8d92ba
PH
2237 long int lvalue;
2238
059ec3d9 2239 errno = 0;
7e8d92ba 2240 lvalue = strtol(CS s, CSS &endptr, intbase);
059ec3d9
PH
2241
2242 if (endptr == s)
2243 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "%sinteger expected for %s",
2244 inttype, name);
2245
2246 if (errno != ERANGE)
059ec3d9
PH
2247 if (tolower(*endptr) == 'k')
2248 {
7e8d92ba
PH
2249 if (lvalue > INT_MAX/1024 || lvalue < INT_MIN/1024) errno = ERANGE;
2250 else lvalue *= 1024;
059ec3d9
PH
2251 endptr++;
2252 }
2253 else if (tolower(*endptr) == 'm')
2254 {
7e8d92ba 2255 if (lvalue > INT_MAX/(1024*1024) || lvalue < INT_MIN/(1024*1024))
059ec3d9 2256 errno = ERANGE;
7e8d92ba 2257 else lvalue *= 1024*1024;
059ec3d9
PH
2258 endptr++;
2259 }
4fab92fb
HSHR
2260 else if (tolower(*endptr) == 'g')
2261 {
2262 if (lvalue > INT_MAX/(1024*1024*1024) || lvalue < INT_MIN/(1024*1024*1024))
2263 errno = ERANGE;
2264 else lvalue *= 1024*1024*1024;
2265 endptr++;
2266 }
059ec3d9 2267
7e8d92ba
PH
2268 if (errno == ERANGE || lvalue > INT_MAX || lvalue < INT_MIN)
2269 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
2270 "absolute value of integer \"%s\" is too large (overflow)", s);
059ec3d9
PH
2271
2272 while (isspace(*endptr)) endptr++;
2273 if (*endptr != 0)
2274 extra_chars_error(endptr, inttype, US"integer value for ", name);
7e8d92ba
PH
2275
2276 value = (int)lvalue;
059ec3d9
PH
2277 }
2278
2279 if (data_block == NULL)
2280 *((int *)(ol->value)) = value;
2281 else
2282 *((int *)((uschar *)data_block + (long int)(ol->value))) = value;
2283 break;
2284
4fab92fb
HSHR
2285 /* Integer held in K: again, allow octal and hex formats, and suffixes K, M
2286 and G. */
2287 /*XXX consider moving to int_eximarith_t (but mind the overflow test 0415) */
059ec3d9
PH
2288
2289 case opt_Kint:
2290 {
2291 uschar *endptr;
2292 errno = 0;
2293 value = strtol(CS s, CSS &endptr, intbase);
2294
2295 if (endptr == s)
2296 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "%sinteger expected for %s",
2297 inttype, name);
2298
2299 if (errno != ERANGE)
4fab92fb 2300 if (tolower(*endptr) == 'g')
059ec3d9 2301 {
4fab92fb
HSHR
2302 if (value > INT_MAX/(1024*1024) || value < INT_MIN/(1024*1024))
2303 errno = ERANGE;
2304 else
2305 value *= 1024*1024;
059ec3d9
PH
2306 endptr++;
2307 }
4fab92fb 2308 else if (tolower(*endptr) == 'm')
059ec3d9 2309 {
4fab92fb
HSHR
2310 if (value > INT_MAX/1024 || value < INT_MIN/1024)
2311 errno = ERANGE;
2312 else
2313 value *= 1024;
059ec3d9
PH
2314 endptr++;
2315 }
4fab92fb
HSHR
2316 else if (tolower(*endptr) == 'k')
2317 endptr++;
059ec3d9 2318 else
059ec3d9 2319 value = (value + 512)/1024;
059ec3d9
PH
2320
2321 if (errno == ERANGE) log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
2322 "absolute value of integer \"%s\" is too large (overflow)", s);
2323
2324 while (isspace(*endptr)) endptr++;
2325 if (*endptr != 0)
2326 extra_chars_error(endptr, inttype, US"integer value for ", name);
2327 }
2328
2329 if (data_block == NULL)
2330 *((int *)(ol->value)) = value;
2331 else
2332 *((int *)((uschar *)data_block + (long int)(ol->value))) = value;
2333 break;
2334
2335 /* Fixed-point number: held to 3 decimal places. */
2336
2337 case opt_fixed:
2338 if (sscanf(CS s, "%d%n", &value, &count) != 1)
2339 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
2340 "fixed-point number expected for %s", name);
2341
2342 if (value < 0) log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
2343 "integer \"%s\" is too large (overflow)", s);
2344
2345 value *= 1000;
2346
2347 if (value < 0) log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
2348 "integer \"%s\" is too large (overflow)", s);
2349
4fab92fb
HSHR
2350 /* We get a coverity error here for using count, as it derived
2351 from the tainted buffer pointed to by s, as parsed by sscanf().
2352 By the definition of sscanf we must be aceessing between start
2353 and end of s (assuming it is nul-terminated...) so ignore the error. */
2354 /* coverity[tainted_data] */
059ec3d9
PH
2355 if (s[count] == '.')
2356 {
2357 int d = 100;
2358 while (isdigit(s[++count]))
2359 {
2360 value += (s[count] - '0') * d;
2361 d /= 10;
2362 }
2363 }
2364
2365 while (isspace(s[count])) count++;
2366
2367 if (s[count] != 0)
2368 extra_chars_error(s+count, US"fixed-point value for ", name, US"");
2369
2370 if (data_block == NULL)
2371 *((int *)(ol->value)) = value;
2372 else
2373 *((int *)((uschar *)data_block + (long int)(ol->value))) = value;
2374 break;
2375
2376 /* There's a special routine to read time values. */
2377
2378 case opt_time:
2379 value = readconf_readtime(s, 0, FALSE);
2380 if (value < 0)
2381 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "invalid time value for %s",
2382 name);
2383 if (data_block == NULL)
2384 *((int *)(ol->value)) = value;
2385 else
2386 *((int *)((uschar *)data_block + (long int)(ol->value))) = value;
2387 break;
2388
2389 /* A time list is a list of colon-separated times, with the first
2390 element holding the size of the list and the second the number of
2391 entries used. */
2392
2393 case opt_timelist:
2394 {
2395 int count = 0;
2396 int *list = (data_block == NULL)?
2397 (int *)(ol->value) :
2398 (int *)((uschar *)data_block + (long int)(ol->value));
2399
2400 if (*s != 0) for (count = 1; count <= list[0] - 2; count++)
2401 {
2402 int terminator = 0;
2403 uschar *snext = Ustrchr(s, ':');
2404 if (snext != NULL)
2405 {
2406 uschar *ss = snext;
2407 while (ss > s && isspace(ss[-1])) ss--;
2408 terminator = *ss;
2409 }
2410 value = readconf_readtime(s, terminator, FALSE);
2411 if (value < 0)
2412 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "invalid time value for %s",
2413 name);
2414 if (count > 1 && value <= list[count])
2415 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
2416 "time value out of order for %s", name);
2417 list[count+1] = value;
2418 if (snext == NULL) break;
2419 s = snext + 1;
2420 while (isspace(*s)) s++;
2421 }
2422
2423 if (count > list[0] - 2)
2424 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "too many time values for %s",
2425 name);
2426 if (count > 0 && list[2] == 0) count = 0;
2427 list[1] = count;
1ad6489e 2428 break;
059ec3d9
PH
2429 }
2430
1ad6489e
JH
2431 case opt_func:
2432 {
2433 void (*fn)() = ol->value;
2434 fn(name, s);
2435 break;
2436 }
059ec3d9
PH
2437 }
2438
2439return TRUE;
2440}
2441
2442
2443
2444/*************************************************
2445* Print a time value *
2446*************************************************/
2447
2448/*
2449Argument: a time value in seconds
2450Returns: pointer to a fixed buffer containing the time as a string,
2451 in readconf_readtime() format
2452*/
2453
2454uschar *
2455readconf_printtime(int t)
2456{
2457int s, m, h, d, w;
2458uschar *p = time_buffer;
2459
ea49d0e1
PH
2460if (t < 0)
2461 {
2462 *p++ = '-';
2463 t = -t;
2464 }
2465
059ec3d9
PH
2466s = t % 60;
2467t /= 60;
2468m = t % 60;
2469t /= 60;
2470h = t % 24;
2471t /= 24;
2472d = t % 7;
2473w = t/7;
2474
2475if (w > 0) { sprintf(CS p, "%dw", w); while (*p) p++; }
2476if (d > 0) { sprintf(CS p, "%dd", d); while (*p) p++; }
2477if (h > 0) { sprintf(CS p, "%dh", h); while (*p) p++; }
2478if (m > 0) { sprintf(CS p, "%dm", m); while (*p) p++; }
2479if (s > 0 || p == time_buffer) sprintf(CS p, "%ds", s);
2480
2481return time_buffer;
2482}
2483
2484
2485
2486/*************************************************
2487* Print an individual option value *
2488*************************************************/
2489
2490/* This is used by the -bP option, so prints to the standard output.
2491The entire options list is passed in as an argument, because some options come
2492in pairs - typically uid/gid settings, which can either be explicit numerical
2493values, or strings to be expanded later. If the numerical value is unset,
2494search for "*expand_<name>" to see if there is a string equivalent.
2495
2496Arguments:
2497 ol option entry, or NULL for an unknown option
2498 name option name
2499 options_block NULL for main configuration options; otherwise points to
2500 a driver block; if the option doesn't have opt_public
2501 set, then options_block->options_block is where the item
2502 resides.
2503 oltop points to the option list in which ol exists
2504 last one more than the offset of the last entry in optop
12f69989 2505 no_labels do not show "foo = " at the start.
059ec3d9
PH
2506
2507Returns: nothing
2508*/
2509
2510static void
2511print_ol(optionlist *ol, uschar *name, void *options_block,
12f69989 2512 optionlist *oltop, int last, BOOL no_labels)
059ec3d9
PH
2513{
2514struct passwd *pw;
2515struct group *gr;
2516optionlist *ol2;
2517void *value;
2518uid_t *uidlist;
2519gid_t *gidlist;
2520uschar *s;
2521uschar name2[64];
2522
2523if (ol == NULL)
2524 {
2525 printf("%s is not a known option\n", name);
2526 return;
2527 }
2528
2529/* Non-admin callers cannot see options that have been flagged secure by the
2530"hide" prefix. */
2531
2532if (!admin_user && (ol->type & opt_secure) != 0)
2533 {
12f69989
PP
2534 if (no_labels)
2535 printf("%s\n", hidden);
2536 else
2537 printf("%s = %s\n", name, hidden);
059ec3d9
PH
2538 return;
2539 }
2540
2541/* Else show the value of the option */
2542
2543value = ol->value;
2544if (options_block != NULL)
2545 {
2546 if ((ol->type & opt_public) == 0)
2547 options_block = (void *)(((driver_instance *)options_block)->options_block);
2548 value = (void *)((uschar *)options_block + (long int)value);
2549 }
2550
2551switch(ol->type & opt_mask)
2552 {
2553 case opt_stringptr:
2554 case opt_rewrite: /* Show the text value */
2555 s = *((uschar **)value);
12f69989
PP
2556 if (!no_labels) printf("%s = ", name);
2557 printf("%s\n", (s == NULL)? US"" : string_printing2(s, FALSE));
059ec3d9
PH
2558 break;
2559
2560 case opt_int:
12f69989
PP
2561 if (!no_labels) printf("%s = ", name);
2562 printf("%d\n", *((int *)value));
059ec3d9
PH
2563 break;
2564
2565 case opt_mkint:
2566 {
2567 int x = *((int *)value);
2568 if (x != 0 && (x & 1023) == 0)
2569 {
2570 int c = 'K';
2571 x >>= 10;
2572 if ((x & 1023) == 0)
2573 {
2574 c = 'M';
2575 x >>= 10;
2576 }
12f69989
PP
2577 if (!no_labels) printf("%s = ", name);
2578 printf("%d%c\n", x, c);
2579 }
2580 else
2581 {
2582 if (!no_labels) printf("%s = ", name);
2583 printf("%d\n", x);
059ec3d9 2584 }
059ec3d9
PH
2585 }
2586 break;
2587
2588 case opt_Kint:
2589 {
2590 int x = *((int *)value);
12f69989
PP
2591 if (!no_labels) printf("%s = ", name);
2592 if (x == 0) printf("0\n");
2593 else if ((x & 1023) == 0) printf("%dM\n", x >> 10);
2594 else printf("%dK\n", x);
059ec3d9
PH
2595 }
2596 break;
2597
2598 case opt_octint:
12f69989
PP
2599 if (!no_labels) printf("%s = ", name);
2600 printf("%#o\n", *((int *)value));
059ec3d9
PH
2601 break;
2602
2603 /* Can be negative only when "unset", in which case integer */
2604
2605 case opt_fixed:
2606 {
2607 int x = *((int *)value);
2608 int f = x % 1000;
2609 int d = 100;
2610 if (x < 0) printf("%s =\n", name); else
2611 {
12f69989
PP
2612 if (!no_labels) printf("%s = ", name);
2613 printf("%d.", x/1000);
059ec3d9
PH
2614 do
2615 {
2616 printf("%d", f/d);
2617 f %= d;
2618 d /= 10;
2619 }
2620 while (f != 0);
2621 printf("\n");
2622 }
2623 }
2624 break;
2625
2626 /* If the numerical value is unset, try for the string value */
2627
2628 case opt_expand_uid:
2629 if (! *get_set_flag(name, oltop, last, options_block))
2630 {
2631 sprintf(CS name2, "*expand_%.50s", name);
2632 ol2 = find_option(name2, oltop, last);
2633 if (ol2 != NULL)
2634 {
2635 void *value2 = ol2->value;
2636 if (options_block != NULL)
2637 value2 = (void *)((uschar *)options_block + (long int)value2);
2638 s = *((uschar **)value2);
12f69989
PP
2639 if (!no_labels) printf("%s = ", name);
2640 printf("%s\n", (s == NULL)? US"" : string_printing(s));
059ec3d9
PH
2641 break;
2642 }
2643 }
2644
2645 /* Else fall through */
2646
2647 case opt_uid:
12f69989 2648 if (!no_labels) printf("%s = ", name);
059ec3d9 2649 if (! *get_set_flag(name, oltop, last, options_block))
12f69989 2650 printf("\n");
059ec3d9
PH
2651 else
2652 {
2653 pw = getpwuid(*((uid_t *)value));
2654 if (pw == NULL)
12f69989
PP
2655 printf("%ld\n", (long int)(*((uid_t *)value)));
2656 else printf("%s\n", pw->pw_name);
059ec3d9
PH
2657 }
2658 break;
2659
2660 /* If the numerical value is unset, try for the string value */
2661
2662 case opt_expand_gid:
2663 if (! *get_set_flag(name, oltop, last, options_block))
2664 {
2665 sprintf(CS name2, "*expand_%.50s", name);
2666 ol2 = find_option(name2, oltop, last);
2667 if (ol2 != NULL && (ol2->type & opt_mask) == opt_stringptr)
2668 {
2669 void *value2 = ol2->value;
2670 if (options_block != NULL)
2671 value2 = (void *)((uschar *)options_block + (long int)value2);
2672 s = *((uschar **)value2);
12f69989
PP
2673 if (!no_labels) printf("%s = ", name);
2674 printf("%s\n", (s == NULL)? US"" : string_printing(s));
059ec3d9
PH
2675 break;
2676 }
2677 }
2678
2679 /* Else fall through */
2680
2681 case opt_gid:
12f69989 2682 if (!no_labels) printf("%s = ", name);
059ec3d9 2683 if (! *get_set_flag(name, oltop, last, options_block))
12f69989 2684 printf("\n");
059ec3d9
PH
2685 else
2686 {
2687 gr = getgrgid(*((int *)value));
2688 if (gr == NULL)
12f69989
PP
2689 printf("%ld\n", (long int)(*((int *)value)));
2690 else printf("%s\n", gr->gr_name);
059ec3d9
PH
2691 }
2692 break;
2693
2694 case opt_uidlist:
2695 uidlist = *((uid_t **)value);
12f69989 2696 if (!no_labels) printf("%s =", name);
059ec3d9
PH
2697 if (uidlist != NULL)
2698 {
2699 int i;
2700 uschar sep = ' ';
12f69989 2701 if (no_labels) sep = '\0';
059ec3d9
PH
2702 for (i = 1; i <= (int)(uidlist[0]); i++)
2703 {
2704 uschar *name = NULL;
2705 pw = getpwuid(uidlist[i]);
2706 if (pw != NULL) name = US pw->pw_name;
12f69989
PP
2707 if (sep != '\0') printf("%c", sep);
2708 if (name != NULL) printf("%s", name);
2709 else printf("%ld", (long int)(uidlist[i]));
059ec3d9
PH
2710 sep = ':';
2711 }
2712 }
2713 printf("\n");
2714 break;
2715
2716 case opt_gidlist:
2717 gidlist = *((gid_t **)value);
12f69989 2718 if (!no_labels) printf("%s =", name);
059ec3d9
PH
2719 if (gidlist != NULL)
2720 {
2721 int i;
2722 uschar sep = ' ';
12f69989 2723 if (no_labels) sep = '\0';
059ec3d9
PH
2724 for (i = 1; i <= (int)(gidlist[0]); i++)
2725 {
2726 uschar *name = NULL;
2727 gr = getgrgid(gidlist[i]);
2728 if (gr != NULL) name = US gr->gr_name;
12f69989
PP
2729 if (sep != '\0') printf("%c", sep);
2730 if (name != NULL) printf("%s", name);
2731 else printf("%ld", (long int)(gidlist[i]));
059ec3d9
PH
2732 sep = ':';
2733 }
2734 }
2735 printf("\n");
2736 break;
2737
2738 case opt_time:
12f69989
PP
2739 if (!no_labels) printf("%s = ", name);
2740 printf("%s\n", readconf_printtime(*((int *)value)));
059ec3d9
PH
2741 break;
2742
2743 case opt_timelist:
2744 {
2745 int i;
2746 int *list = (int *)value;
12f69989 2747 if (!no_labels) printf("%s = ", name);
059ec3d9
PH
2748 for (i = 0; i < list[1]; i++)
2749 printf("%s%s", (i == 0)? "" : ":", readconf_printtime(list[i+2]));
2750 printf("\n");
2751 }
2752 break;
2753
2754 case opt_bit:
2755 printf("%s%s\n", ((*((int *)value)) & (1 << ((ol->type >> 16) & 31)))?
2756 "" : "no_", name);
2757 break;
2758
2759 case opt_expand_bool:
2760 sprintf(CS name2, "*expand_%.50s", name);
2761 ol2 = find_option(name2, oltop, last);
2762 if (ol2 != NULL && ol2->value != NULL)
2763 {
2764 void *value2 = ol2->value;
2765 if (options_block != NULL)
2766 value2 = (void *)((uschar *)options_block + (long int)value2);
2767 s = *((uschar **)value2);
2768 if (s != NULL)
2769 {
12f69989
PP
2770 if (!no_labels) printf("%s = ", name);
2771 printf("%s\n", string_printing(s));
059ec3d9
PH
2772 break;
2773 }
2774 /* s == NULL => string not set; fall through */
2775 }
2776
2777 /* Fall through */
2778
2779 case opt_bool:
2780 case opt_bool_verify:
2781 case opt_bool_set:
2782 printf("%s%s\n", (*((BOOL *)value))? "" : "no_", name);
2783 break;
2784 }
2785}
2786
2787
2788
2789/*************************************************
2790* Print value from main configuration *
2791*************************************************/
2792
2793/* This function, called as a result of encountering the -bP option,
2794causes the value of any main configuration variable to be output if the
2795second argument is NULL. There are some special values:
2796
2797 all print all main configuration options
44f6c01d
HSHR
2798 config_file print the name of the configuration file
2799 (configure_file will still work, for backward
2800 compatibility)
059ec3d9
PH
2801 routers print the routers' configurations
2802 transports print the transports' configuration
2803 authenticators print the authenticators' configuration
5d9c27ec 2804 macros print the macros' configuration
059ec3d9
PH
2805 router_list print a list of router names
2806 transport_list print a list of transport names
2807 authenticator_list print a list of authentication mechanism names
5d9c27ec 2808 macro_list print a list of macro names
059ec3d9
PH
2809 +name print a named list item
2810 local_scan print the local_scan options
bf3c2c6b 2811 config print the configuration as it is parsed
4fab92fb 2812 environment print the used execution environment
059ec3d9 2813
5d9c27ec
TK
2814If the second argument is not NULL, it must be one of "router", "transport",
2815"authenticator" or "macro" in which case the first argument identifies the
2816driver whose options are to be printed.
059ec3d9
PH
2817
2818Arguments:
2819 name option name if type == NULL; else driver name
2820 type NULL or driver type name, as described above
12f69989 2821 no_labels avoid the "foo = " at the start of an item
059ec3d9
PH
2822
2823Returns: nothing
2824*/
2825
2826void
12f69989 2827readconf_print(uschar *name, uschar *type, BOOL no_labels)
059ec3d9
PH
2828{
2829BOOL names_only = FALSE;
2830optionlist *ol;
2831optionlist *ol2 = NULL;
2832driver_instance *d = NULL;
5d9c27ec 2833macro_item *m;
059ec3d9
PH
2834int size = 0;
2835
2836if (type == NULL)
2837 {
2838 if (*name == '+')
2839 {
2840 int i;
2841 tree_node *t;
2842 BOOL found = FALSE;
2843 static uschar *types[] = { US"address", US"domain", US"host",
2844 US"localpart" };
2845 static tree_node **anchors[] = { &addresslist_anchor, &domainlist_anchor,
2846 &hostlist_anchor, &localpartlist_anchor };
2847
2848 for (i = 0; i < 4; i++)
2849 {
2850 t = tree_search(*(anchors[i]), name+1);
2851 if (t != NULL)
2852 {
2853 found = TRUE;
12f69989
PP
2854 if (no_labels)
2855 printf("%s\n", ((namedlist_block *)(t->data.ptr))->string);
2856 else
2857 printf("%slist %s = %s\n", types[i], name+1,
2858 ((namedlist_block *)(t->data.ptr))->string);
059ec3d9
PH
2859 }
2860 }
2861
2862 if (!found)
2863 printf("no address, domain, host, or local part list called \"%s\" "
2864 "exists\n", name+1);
2865
2866 return;
2867 }
2868
4fab92fb
HSHR
2869 if ( Ustrcmp(name, "configure_file") == 0
2870 || Ustrcmp(name, "config_file") == 0)
059ec3d9
PH
2871 {
2872 printf("%s\n", CS config_main_filename);
2873 return;
2874 }
2875
2876 if (Ustrcmp(name, "all") == 0)
2877 {
2878 for (ol = optionlist_config;
4fab92fb 2879 ol < optionlist_config + nelem(optionlist_config); ol++)
059ec3d9
PH
2880 {
2881 if ((ol->type & opt_hidden) == 0)
12f69989 2882 print_ol(ol, US ol->name, NULL,
4fab92fb 2883 optionlist_config, nelem(optionlist_config),
12f69989 2884 no_labels);
059ec3d9
PH
2885 }
2886 return;
2887 }
2888
2889 if (Ustrcmp(name, "local_scan") == 0)
2890 {
2891 #ifndef LOCAL_SCAN_HAS_OPTIONS
2892 printf("local_scan() options are not supported\n");
2893 #else
2894 for (ol = local_scan_options;
2895 ol < local_scan_options + local_scan_options_count; ol++)
2896 {
2897 print_ol(ol, US ol->name, NULL, local_scan_options,
12f69989 2898 local_scan_options_count, no_labels);
059ec3d9
PH
2899 }
2900 #endif
2901 return;
2902 }
2903
bf3c2c6b
HSHR
2904 if (Ustrcmp(name, "config") == 0)
2905 {
4fab92fb 2906 print_config(admin_user, no_labels);
bf3c2c6b
HSHR
2907 return;
2908 }
2909
059ec3d9
PH
2910 if (Ustrcmp(name, "routers") == 0)
2911 {
2912 type = US"router";
2913 name = NULL;
2914 }
2915 else if (Ustrcmp(name, "transports") == 0)
2916 {
2917 type = US"transport";
2918 name = NULL;
2919 }
2920
2921 else if (Ustrcmp(name, "authenticators") == 0)
2922 {
2923 type = US"authenticator";
2924 name = NULL;
2925 }
2926
5d9c27ec 2927 else if (Ustrcmp(name, "macros") == 0)
059ec3d9 2928 {
5d9c27ec 2929 type = US"macro";
059ec3d9 2930 name = NULL;
059ec3d9
PH
2931 }
2932
2933 else if (Ustrcmp(name, "router_list") == 0)
2934 {
2935 type = US"router";
2936 name = NULL;
2937 names_only = TRUE;
2938 }
5d9c27ec 2939
059ec3d9
PH
2940 else if (Ustrcmp(name, "transport_list") == 0)
2941 {
2942 type = US"transport";
2943 name = NULL;
2944 names_only = TRUE;
2945 }
5d9c27ec
TK
2946
2947 else if (Ustrcmp(name, "authenticator_list") == 0)
2948 {
2949 type = US"authenticator";
2950 name = NULL;
2951 names_only = TRUE;
2952 }
2953
2954 else if (Ustrcmp(name, "macro_list") == 0)
2955 {
2956 type = US"macro";
2957 name = NULL;
2958 names_only = TRUE;
2959 }
2960
4fab92fb
HSHR
2961 else if (Ustrcmp(name, "environment") == 0)
2962 {
2963 if (environ)
2964 {
2965 uschar ** p;
2966 for (p = USS environ; *p; p++) ;
2967 qsort(environ, p - USS environ, sizeof(*p), string_compare_by_pointer);
2968
2969 for (p = USS environ; *p; p++)
2970 {
2971 uschar * q;
2972 if (no_labels && (q = Ustrchr(*p, '='))) *q = '\0';
2973 puts(CS *p);
2974 }
2975 }
2976 return;
2977 }
2978
059ec3d9
PH
2979 else
2980 {
4fab92fb
HSHR
2981 print_ol(find_option(name, optionlist_config, nelem(optionlist_config)),
2982 name, NULL, optionlist_config, nelem(optionlist_config), no_labels);
059ec3d9
PH
2983 return;
2984 }
2985 }
2986
2987/* Handle the options for a router or transport. Skip options that are flagged
2988as hidden. Some of these are options with names starting with '*', used for
2989internal alternative representations of other options (which the printing
2990function will sort out). Others are synonyms kept for backward compatibility.
2991*/
2992
2993if (Ustrcmp(type, "router") == 0)
2994 {
2995 d = (driver_instance *)routers;
2996 ol2 = optionlist_routers;
2997 size = optionlist_routers_size;
2998 }
2999else if (Ustrcmp(type, "transport") == 0)
3000 {
3001 d = (driver_instance *)transports;
3002 ol2 = optionlist_transports;
3003 size = optionlist_transports_size;
3004 }
3005else if (Ustrcmp(type, "authenticator") == 0)
3006 {
3007 d = (driver_instance *)auths;
3008 ol2 = optionlist_auths;
3009 size = optionlist_auths_size;
3010 }
3011
5d9c27ec
TK
3012else if (Ustrcmp(type, "macro") == 0)
3013 {
3014 /* People store passwords in macros and they were previously not available
3015 for printing. So we have an admin_users restriction. */
3016 if (!admin_user)
3017 {
3018 fprintf(stderr, "exim: permission denied\n");
3019 exit(EXIT_FAILURE);
3020 }
4fab92fb
HSHR
3021 if (!macros_builtin_created) macros_create_builtin();
3022 for (m = macros; m; m = m->next)
3023 if (!name || Ustrcmp(name, m->name) == 0)
5d9c27ec
TK
3024 {
3025 if (names_only)
3026 printf("%s\n", CS m->name);
3027 else
3028 printf("%s=%s\n", CS m->name, CS m->replacement);
4fab92fb 3029 if (name)
5d9c27ec
TK
3030 return;
3031 }
4fab92fb 3032 if (name)
5d9c27ec
TK
3033 printf("%s %s not found\n", type, name);
3034 return;
3035 }
3036
059ec3d9
PH
3037if (names_only)
3038 {
3039 for (; d != NULL; d = d->next) printf("%s\n", CS d->name);
3040 return;
3041 }
3042
3043/* Either search for a given driver, or print all of them */
3044
3045for (; d != NULL; d = d->next)
3046 {
3047 if (name == NULL)
3048 printf("\n%s %s:\n", d->name, type);
3049 else if (Ustrcmp(d->name, name) != 0) continue;
3050
3051 for (ol = ol2; ol < ol2 + size; ol++)
3052 {
3053 if ((ol->type & opt_hidden) == 0)
12f69989 3054 print_ol(ol, US ol->name, d, ol2, size, no_labels);
059ec3d9
PH
3055 }
3056
3057 for (ol = d->info->options;
3058 ol < d->info->options + *(d->info->options_count); ol++)
3059 {
3060 if ((ol->type & opt_hidden) == 0)
12f69989 3061 print_ol(ol, US ol->name, d, d->info->options, *(d->info->options_count), no_labels);
059ec3d9
PH
3062 }
3063 if (name != NULL) return;
3064 }
3065if (name != NULL) printf("%s %s not found\n", type, name);
3066}
3067
3068
3069
3070/*************************************************
3071* Read a named list item *
3072*************************************************/
3073
3074/* This function reads a name and a list (i.e. string). The name is used to
3075save the list in a tree, sorted by its name. Each entry also has a number,
3076which can be used for caching tests, but if the string contains any expansion
3077items other than $key, the number is set negative to inhibit caching. This
3078mechanism is used for domain, host, and address lists that are referenced by
3079the "+name" syntax.
3080
3081Arguments:
3082 anchorp points to the tree anchor
3083 numberp points to the current number for this tree
3084 max the maximum number permitted
3085 s the text of the option line, starting immediately after the name
3086 of the list type
3087 tname the name of the list type, for messages
3088
3089Returns: nothing
3090*/
3091
3092static void
3093read_named_list(tree_node **anchorp, int *numberp, int max, uschar *s,
3094 uschar *tname)
3095{
3096BOOL forcecache = FALSE;
3097uschar *ss;
3098tree_node *t;
3099namedlist_block *nb = store_get(sizeof(namedlist_block));
3100
3101if (Ustrncmp(s, "_cache", 6) == 0)
3102 {
3103 forcecache = TRUE;
3104 s += 6;
3105 }
3106
3107if (!isspace(*s))
3108 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "unrecognized configuration line");
3109
3110if (*numberp >= max)
3111 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "too many named %ss (max is %d)\n",
3112 tname, max);
3113
3114while (isspace(*s)) s++;
3115ss = s;
3116while (isalnum(*s) || *s == '_') s++;
3117t = store_get(sizeof(tree_node) + s-ss);
3118Ustrncpy(t->name, ss, s-ss);
3119t->name[s-ss] = 0;
3120while (isspace(*s)) s++;
3121
3122if (!tree_insertnode(anchorp, t))
3123 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
3124 "duplicate name \"%s\" for a named %s", t->name, tname);
3125
3126t->data.ptr = nb;
3127nb->number = *numberp;
3128*numberp += 1;
3129
3130if (*s++ != '=') log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
3131 "missing '=' after \"%s\"", t->name);
3132while (isspace(*s)) s++;
3133nb->string = read_string(s, t->name);
3134nb->cache_data = NULL;
3135
3136/* Check the string for any expansions; if any are found, mark this list
3137uncacheable unless the user has explicited forced caching. */
3138
3139if (!forcecache && Ustrchr(nb->string, '$') != NULL) nb->number = -1;
3140}
3141
3142
3143
3144
3145/*************************************************
3146* Unpick data for a rate limit *
3147*************************************************/
3148
3149/* This function is called to unpick smtp_ratelimit_{mail,rcpt} into four
3150separate values.
3151
3152Arguments:
3153 s string, in the form t,b,f,l
3154 where t is the threshold (integer)
3155 b is the initial delay (time)
3156 f is the multiplicative factor (fixed point)
3157 k is the maximum time (time)
3158 threshold where to store threshold
3159 base where to store base in milliseconds
3160 factor where to store factor in milliseconds
3161 limit where to store limit
3162
3163Returns: nothing (panics on error)
3164*/
3165
3166static void
3167unpick_ratelimit(uschar *s, int *threshold, int *base, double *factor,
3168 int *limit)
3169{
3170uschar bstring[16], lstring[16];
3171
3172if (sscanf(CS s, "%d, %15[0123456789smhdw.], %lf, %15s", threshold, bstring,
3173 factor, lstring) == 4)
3174 {
3175 *base = readconf_readtime(bstring, 0, TRUE);
3176 *limit = readconf_readtime(lstring, 0, TRUE);
3177 if (*base >= 0 && *limit >= 0) return;
3178 }
3179log_write(0, LOG_MAIN|LOG_PANIC_DIE, "malformed ratelimit data: %s", s);
3180}
3181
3182
3183
3184
3185/*************************************************
3375e053
PP
3186* Drop privs for checking TLS config *
3187*************************************************/
3188
3189/* We want to validate TLS options during readconf, but do not want to be
3190root when we call into the TLS library, in case of library linkage errors
3191which cause segfaults; before this check, those were always done as the Exim
3192runtime user and it makes sense to continue with that.
3193
3194Assumes: tls_require_ciphers has been set, if it will be
3195 exim_user has been set, if it will be
3196 exim_group has been set, if it will be
3197
3198Returns: bool for "okay"; false will cause caller to immediately exit.
3199*/
3200
3201#ifdef SUPPORT_TLS
3202static BOOL
4fab92fb 3203tls_dropprivs_validate_require_cipher(BOOL nowarn)
3375e053
PP
3204{
3205const uschar *errmsg;
3206pid_t pid;
3207int rc, status;
3208void (*oldsignal)(int);
3209
23f3dc67
JH
3210/* If TLS will never be used, no point checking ciphers */
3211
3212if ( !tls_advertise_hosts
3213 || !*tls_advertise_hosts
3214 || Ustrcmp(tls_advertise_hosts, ":") == 0
3215 )
3216 return TRUE;
4fab92fb
HSHR
3217else if (!nowarn && !tls_certificate)
3218 log_write(0, LOG_MAIN,
3219 "Warning: No server certificate defined; will use a selfsigned one.\n"
23f3dc67
JH
3220 " Suggested action: either install a certificate or change tls_advertise_hosts option");
3221
3375e053
PP
3222oldsignal = signal(SIGCHLD, SIG_DFL);
3223
3224fflush(NULL);
3225if ((pid = fork()) < 0)
3226 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "fork failed for TLS check");
3227
3228if (pid == 0)
3229 {
1d7a353e
PP
3230 /* in some modes, will have dropped privilege already */
3231 if (!geteuid())
3232 exim_setugid(exim_uid, exim_gid, FALSE,
3233 US"calling tls_validate_require_cipher");
3375e053
PP
3234
3235 errmsg = tls_validate_require_cipher();
3236 if (errmsg)
3237 {
3238 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
3239 "tls_require_ciphers invalid: %s", errmsg);
3240 }
3241 fflush(NULL);
3242 _exit(0);
3243 }
3244
3245do {
3246 rc = waitpid(pid, &status, 0);
3247} while (rc < 0 && errno == EINTR);
3248
9d26b8c0 3249DEBUG(D_tls)
3375e053
PP
3250 debug_printf("tls_validate_require_cipher child %d ended: status=0x%x\n",
3251 (int)pid, status);
3252
3253signal(SIGCHLD, oldsignal);
3254
3255return status == 0;
3256}
3257#endif /* SUPPORT_TLS */
3258
3259
3260
3261
3262/*************************************************
059ec3d9
PH
3263* Read main configuration options *
3264*************************************************/
3265
3266/* This function is the first to be called for configuration reading. It
3267opens the configuration file and reads general configuration settings until
3268it reaches the end of the configuration section. The file is then left open so
3269that the remaining configuration data can subsequently be read if needed for
3270this run of Exim.
3271
3272The configuration file must be owned either by root or exim, and be writeable
3273only by root or uid/gid exim. The values for Exim's uid and gid can be changed
3274in the config file, so the test is done on the compiled in values. A slight
3275anomaly, to be carefully documented.
3276
3277The name of the configuration file is taken from a list that is included in the
3278binary of Exim. It can be altered from the command line, but if that is done,
3279root privilege is immediately withdrawn unless the caller is root or exim.
3280The first file on the list that exists is used.
3281
3282For use on multiple systems that share file systems, first look for a
3283configuration file whose name has the current node name on the end. If that is
3284not found, try the generic name. For really contorted configurations, that run
3285multiple Exims with different uid settings, first try adding the effective uid
3286before the node name. These complications are going to waste resources on most
3287systems. Therefore they are available only when requested by compile-time
3288options. */
3289
3290void
4fab92fb 3291readconf_main(BOOL nowarn)
059ec3d9
PH
3292{
3293int sep = 0;
3294struct stat statbuf;
3295uschar *s, *filename;
55414b25 3296const uschar *list = config_main_filelist;
059ec3d9
PH
3297
3298/* Loop through the possible file names */
3299
4fab92fb 3300while((filename = string_nextinlist(&list, &sep, big_buffer, big_buffer_size)))
059ec3d9 3301 {
4fab92fb 3302
059ec3d9
PH
3303 /* Cut out all the fancy processing unless specifically wanted */
3304
3305 #if defined(CONFIGURE_FILE_USE_NODE) || defined(CONFIGURE_FILE_USE_EUID)
3306 uschar *suffix = filename + Ustrlen(filename);
3307
3308 /* Try for the node-specific file if a node name exists */
3309
3310 #ifdef CONFIGURE_FILE_USE_NODE
3311 struct utsname uts;
3312 if (uname(&uts) >= 0)
3313 {
3314 #ifdef CONFIGURE_FILE_USE_EUID
3315 sprintf(CS suffix, ".%ld.%.256s", (long int)original_euid, uts.nodename);
3316 config_file = Ufopen(filename, "rb");
3317 if (config_file == NULL)
3318 #endif /* CONFIGURE_FILE_USE_EUID */
3319 {
3320 sprintf(CS suffix, ".%.256s", uts.nodename);
3321 config_file = Ufopen(filename, "rb");
3322 }
3323 }
3324 #endif /* CONFIGURE_FILE_USE_NODE */
3325
3326 /* Otherwise, try the generic name, possibly with the euid added */
3327
3328 #ifdef CONFIGURE_FILE_USE_EUID
3329 if (config_file == NULL)
3330 {
3331 sprintf(CS suffix, ".%ld", (long int)original_euid);
3332 config_file = Ufopen(filename, "rb");
3333 }
3334 #endif /* CONFIGURE_FILE_USE_EUID */
3335
3336 /* Finally, try the unadorned name */
3337
3338 if (config_file == NULL)
3339 {
3340 *suffix = 0;
3341 config_file = Ufopen(filename, "rb");
3342 }
3343 #else /* if neither defined */
3344
3345 /* This is the common case when the fancy processing is not included. */
3346
3347 config_file = Ufopen(filename, "rb");
3348 #endif
3349
3350 /* If the file does not exist, continue to try any others. For any other
3351 error, break out (and die). */
3352
3353 if (config_file != NULL || errno != ENOENT) break;
3354 }
3355
4fab92fb
HSHR
3356/* Now, once we found and opened our configuration file, we change the directory
3357to a safe place. Later we change to $spool_directory. */
3358
3359if (Uchdir("/") < 0)
3360 {
3361 perror("exim: chdir `/': ");
3362 exit(EXIT_FAILURE);
3363 }
3364
059ec3d9
PH
3365/* On success, save the name for verification; config_filename is used when
3366logging configuration errors (it changes for .included files) whereas
3367config_main_filename is the name shown by -bP. Failure to open a configuration
3368file is a serious disaster. */
3369
3370if (config_file != NULL)
3371 {
98b8312f 3372 uschar *p;
059ec3d9 3373 config_filename = config_main_filename = string_copy(filename);
98b8312f 3374
b6fbf22d 3375 p = Ustrrchr(filename, '/');
94431adb 3376 config_main_directory = p ? string_copyn(filename, p - filename)
b6fbf22d 3377 : string_copy(US".");
059ec3d9
PH
3378 }
3379else
3380 {
3381 if (filename == NULL)
3382 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "non-existent configuration file(s): "
3383 "%s", config_main_filelist);
3384 else
3385 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "%s", string_open_failed(errno,
3386 "configuration file %s", filename));
3387 }
3388
e2f5dc15 3389/* Check the status of the file we have opened, if we have retained root
fea24b2e 3390privileges and the file isn't /dev/null (which *should* be 0666). */
059ec3d9 3391
fea24b2e 3392if (trusted_config && Ustrcmp(filename, US"/dev/null"))
059ec3d9
PH
3393 {
3394 if (fstat(fileno(config_file), &statbuf) != 0)
3395 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "failed to stat configuration file %s",
3396 big_buffer);
3397
c1d94452 3398 if ((statbuf.st_uid != root_uid /* owner not root */
059ec3d9
PH
3399 #ifdef CONFIGURE_OWNER
3400 && statbuf.st_uid != config_uid /* owner not the special one */
3401 #endif
3402 ) || /* or */
c1d94452 3403 (statbuf.st_gid != root_gid /* group not root & */
35edf2ff
PH
3404 #ifdef CONFIGURE_GROUP
3405 && statbuf.st_gid != config_gid /* group not the special one */
8e669ac1 3406 #endif
35edf2ff 3407 && (statbuf.st_mode & 020) != 0) || /* group writeable */
059ec3d9
PH
3408 /* or */
3409 ((statbuf.st_mode & 2) != 0)) /* world writeable */
3410
3411 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "Exim configuration file %s has the "
3412 "wrong owner, group, or mode", big_buffer);
3413 }
3414
3415/* Process the main configuration settings. They all begin with a lower case
3416letter. If we see something starting with an upper case letter, it is taken as
3417a macro definition. */
3418
3419while ((s = get_config_line()) != NULL)
3420 {
cf00dad6 3421 if (isupper(s[0])) read_macro_assignment(s);
059ec3d9
PH
3422
3423 else if (Ustrncmp(s, "domainlist", 10) == 0)
3424 read_named_list(&domainlist_anchor, &domainlist_count,
3425 MAX_NAMED_LIST, s+10, US"domain list");
3426
3427 else if (Ustrncmp(s, "hostlist", 8) == 0)
3428 read_named_list(&hostlist_anchor, &hostlist_count,
3429 MAX_NAMED_LIST, s+8, US"host list");
3430
3431 else if (Ustrncmp(s, US"addresslist", 11) == 0)
3432 read_named_list(&addresslist_anchor, &addresslist_count,
3433 MAX_NAMED_LIST, s+11, US"address list");
3434
3435 else if (Ustrncmp(s, US"localpartlist", 13) == 0)
3436 read_named_list(&localpartlist_anchor, &localpartlist_count,
3437 MAX_NAMED_LIST, s+13, US"local part list");
3438
3439 else
3440 (void) readconf_handle_option(s, optionlist_config, optionlist_config_size,
3441 NULL, US"main option \"%s\" unknown");
3442 }
3443
3444
3445/* If local_sender_retain is set, local_from_check must be unset. */
3446
3447if (local_sender_retain && local_from_check)
3448 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "both local_from_check and "
3449 "local_sender_retain are set; this combination is not allowed");
3450
3451/* If the timezone string is empty, set it to NULL, implying no TZ variable
3452wanted. */
3453
3454if (timezone_string != NULL && *timezone_string == 0) timezone_string = NULL;
3455
944a9c55
PH
3456/* The max retry interval must not be greater than 24 hours. */
3457
3458if (retry_interval_max > 24*60*60) retry_interval_max = 24*60*60;
3459
059ec3d9
PH
3460/* remote_max_parallel must be > 0 */
3461
3462if (remote_max_parallel <= 0) remote_max_parallel = 1;
3463
6a3f1455
PH
3464/* Save the configured setting of freeze_tell, so we can re-instate it at the
3465start of a new SMTP message. */
3466
3467freeze_tell_config = freeze_tell;
3468
059ec3d9
PH
3469/* The primary host name may be required for expansion of spool_directory
3470and log_file_path, so make sure it is set asap. It is obtained from uname(),
3471but if that yields an unqualified value, make a FQDN by using gethostbyname to
3472canonize it. Some people like upper case letters in their host names, so we
3473don't force the case. */
3474
3475if (primary_hostname == NULL)
3476 {
55414b25 3477 const uschar *hostname;
059ec3d9
PH
3478 struct utsname uts;
3479 if (uname(&uts) < 0)
3480 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "uname() failed to yield host name");
3481 hostname = US uts.nodename;
3482
3483 if (Ustrchr(hostname, '.') == NULL)
3484 {
3485 int af = AF_INET;
3486 struct hostent *hostdata;
3487
3488 #if HAVE_IPV6
7e66e54d 3489 if (!disable_ipv6 && (dns_ipv4_lookup == NULL ||
55414b25
JH
3490 match_isinlist(hostname, CUSS &dns_ipv4_lookup, 0, NULL, NULL,
3491 MCL_DOMAIN, TRUE, NULL) != OK))
059ec3d9
PH
3492 af = AF_INET6;
3493 #else
3494 af = AF_INET;
3495 #endif
3496
3497 for (;;)
3498 {
3499 #if HAVE_IPV6
3500 #if HAVE_GETIPNODEBYNAME
3501 int error_num;
3502 hostdata = getipnodebyname(CS hostname, af, 0, &error_num);
3503 #else
3504 hostdata = gethostbyname2(CS hostname, af);
3505 #endif
3506 #else
3507 hostdata = gethostbyname(CS hostname);
3508 #endif
3509
3510 if (hostdata != NULL)
3511 {
3512 hostname = US hostdata->h_name;
3513 break;
3514 }
3515
3516 if (af == AF_INET) break;
3517 af = AF_INET;
3518 }
3519 }
3520
3521 primary_hostname = string_copy(hostname);
3522 }
3523
3524/* Set up default value for smtp_active_hostname */
3525
3526smtp_active_hostname = primary_hostname;
3527
3528/* If spool_directory wasn't set in the build-time configuration, it must have
3529got set above. Of course, writing to the log may not work if log_file_path is
3530not set, but it will at least get to syslog or somewhere, with any luck. */
3531
3532if (*spool_directory == 0)
3533 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "spool_directory undefined: cannot "
3534 "proceed");
3535
3536/* Expand the spool directory name; it may, for example, contain the primary
3537host name. Same comment about failure. */
3538
3539s = expand_string(spool_directory);
3540if (s == NULL)
3541 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "failed to expand spool_directory "
3542 "\"%s\": %s", spool_directory, expand_string_message);
3543spool_directory = s;
3544
3545/* Expand log_file_path, which must contain "%s" in any component that isn't
f1e5fef5
PP
3546the null string or "syslog". It is also allowed to contain one instance of %D
3547or %M. However, it must NOT contain % followed by anything else. */
059ec3d9
PH
3548
3549if (*log_file_path != 0)
3550 {
55414b25 3551 const uschar *ss, *sss;
059ec3d9
PH
3552 int sep = ':'; /* Fixed for log file path */
3553 s = expand_string(log_file_path);
3554 if (s == NULL)
3555 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "failed to expand log_file_path "
3556 "\"%s\": %s", log_file_path, expand_string_message);
3557
3558 ss = s;
3559 while ((sss = string_nextinlist(&ss,&sep,big_buffer,big_buffer_size)) != NULL)
3560 {
3561 uschar *t;
3562 if (sss[0] == 0 || Ustrcmp(sss, "syslog") == 0) continue;
3563 t = Ustrstr(sss, "%s");
3564 if (t == NULL)
3565 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "log_file_path \"%s\" does not "
3566 "contain \"%%s\"", sss);
3567 *t = 'X';
3568 t = Ustrchr(sss, '%');
3569 if (t != NULL)
3570 {
f1e5fef5 3571 if ((t[1] != 'D' && t[1] != 'M') || Ustrchr(t+2, '%') != NULL)
059ec3d9
PH
3572 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "log_file_path \"%s\" contains "
3573 "unexpected \"%%\" character", s);
3574 }
3575 }
3576
3577 log_file_path = s;
3578 }
3579
3580/* Interpret syslog_facility into an integer argument for 'ident' param to
3581openlog(). Default is LOG_MAIL set in globals.c. Allow the user to omit the
3582leading "log_". */
3583
3584if (syslog_facility_str != NULL)
3585 {
3586 int i;
3587 uschar *s = syslog_facility_str;
3588
3589 if ((Ustrlen(syslog_facility_str) >= 4) &&
3590 (strncmpic(syslog_facility_str, US"log_", 4) == 0))
3591 s += 4;
3592
3593 for (i = 0; i < syslog_list_size; i++)
3594 {
3595 if (strcmpic(s, syslog_list[i].name) == 0)
3596 {
3597 syslog_facility = syslog_list[i].value;
3598 break;
3599 }
3600 }
3601
3602 if (i >= syslog_list_size)
3603 {
3604 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
3605 "failed to interpret syslog_facility \"%s\"", syslog_facility_str);
3606 }
3607 }
3608
3609/* Expand pid_file_path */
3610
3611if (*pid_file_path != 0)
3612 {
3613 s = expand_string(pid_file_path);
3614 if (s == NULL)
3615 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "failed to expand pid_file_path "
3616 "\"%s\": %s", pid_file_path, expand_string_message);
3617 pid_file_path = s;
3618 }
3619
921b12ca
TF
3620/* Set default value of process_log_path */
3621
3622if (process_log_path == NULL || *process_log_path =='\0')
3623 process_log_path = string_sprintf("%s/exim-process.info", spool_directory);
3624
059ec3d9
PH
3625/* Compile the regex for matching a UUCP-style "From_" line in an incoming
3626message. */
3627
3628regex_From = regex_must_compile(uucp_from_pattern, FALSE, TRUE);
3629
3630/* Unpick the SMTP rate limiting options, if set */
3631
3632if (smtp_ratelimit_mail != NULL)
3633 {
3634 unpick_ratelimit(smtp_ratelimit_mail, &smtp_rlm_threshold,
3635 &smtp_rlm_base, &smtp_rlm_factor, &smtp_rlm_limit);
3636 }
3637
3638if (smtp_ratelimit_rcpt != NULL)
3639 {
3640 unpick_ratelimit(smtp_ratelimit_rcpt, &smtp_rlr_threshold,
3641 &smtp_rlr_base, &smtp_rlr_factor, &smtp_rlr_limit);
3642 }
3643
3644/* The qualify domains default to the primary host name */
3645
3646if (qualify_domain_sender == NULL)
3647 qualify_domain_sender = primary_hostname;
3648if (qualify_domain_recipient == NULL)
3649 qualify_domain_recipient = qualify_domain_sender;
3650
3651/* Setting system_filter_user in the configuration sets the gid as well if a
3652name is given, but a numerical value does not. */
3653
3654if (system_filter_uid_set && !system_filter_gid_set)
3655 {
3656 struct passwd *pw = getpwuid(system_filter_uid);
3657 if (pw == NULL)
3658 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "Failed to look up uid %ld",
3659 (long int)system_filter_uid);
3660 system_filter_gid = pw->pw_gid;
3661 system_filter_gid_set = TRUE;
3662 }
3663
3664/* If the errors_reply_to field is set, check that it is syntactically valid
3665and ensure it contains a domain. */
3666
3667if (errors_reply_to != NULL)
3668 {
3669 uschar *errmess;
3670 int start, end, domain;
3671 uschar *recipient = parse_extract_address(errors_reply_to, &errmess,
3672 &start, &end, &domain, FALSE);
3673
3674 if (recipient == NULL)
3675 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
3676 "error in errors_reply_to (%s): %s", errors_reply_to, errmess);
3677
3678 if (domain == 0)
3679 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
3680 "errors_reply_to (%s) does not contain a domain", errors_reply_to);
3681 }
3682
3683/* If smtp_accept_queue or smtp_accept_max_per_host is set, then
3684smtp_accept_max must also be set. */
3685
3686if (smtp_accept_max == 0 &&
3687 (smtp_accept_queue > 0 || smtp_accept_max_per_host != NULL))
3688 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
3689 "smtp_accept_max must be set if smtp_accept_queue or "
3690 "smtp_accept_max_per_host is set");
3691
3692/* Set up the host number if anything is specified. It is an expanded string
3693so that it can be computed from the host name, for example. We do this last
3694so as to ensure that everything else is set up before the expansion. */
3695
3696if (host_number_string != NULL)
3697 {
ef840681 3698 long int n;
059ec3d9
PH
3699 uschar *end;
3700 uschar *s = expand_string(host_number_string);
ef840681
PP
3701 if (s == NULL)
3702 log_write(0, LOG_MAIN|LOG_PANIC_DIE,
3703 "failed to expand localhost_number \"%s\": %s",
3704 host_number_string, expand_string_message);
3705 n = Ustrtol(s, &end, 0);
059ec3d9
PH
3706 while (isspace(*end)) end++;
3707 if (*end != 0)
3708 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
3709 "localhost_number value is not a number: %s", s);
3710 if (n > LOCALHOST_MAX)
3711 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
3712 "localhost_number is greater than the maximum allowed value (%d)",
3713 LOCALHOST_MAX);
3714 host_number = n;
3715 }
3716
3717#ifdef SUPPORT_TLS
3718/* If tls_verify_hosts is set, tls_verify_certificates must also be set */
3719
3720if ((tls_verify_hosts != NULL || tls_try_verify_hosts != NULL) &&
3721 tls_verify_certificates == NULL)
3722 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
3723 "tls_%sverify_hosts is set, but tls_verify_certificates is not set",
3724 (tls_verify_hosts != NULL)? "" : "try_");
77bb000f 3725
3375e053
PP
3726/* This also checks that the library linkage is working and we can call
3727routines in it, so call even if tls_require_ciphers is unset */
4fab92fb 3728if (!tls_dropprivs_validate_require_cipher(nowarn))
3375e053
PP
3729 exit(1);
3730
3731/* Magic number: at time of writing, 1024 has been the long-standing value
3732used by so many clients, and what Exim used to use always, that it makes
3733sense to just min-clamp this max-clamp at that. */
3734if (tls_dh_max_bits < 1024)
3735 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
3736 "tls_dh_max_bits is too small, must be at least 1024 for interop");
3737
77bb000f
PP
3738/* If openssl_options is set, validate it */
3739if (openssl_options != NULL)
3740 {
3741# ifdef USE_GNUTLS
3742 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
a053d125 3743 "openssl_options is set but we're using GnuTLS");
77bb000f
PP
3744# else
3745 long dummy;
3746 if (!(tls_openssl_options_parse(openssl_options, &dummy)))
3747 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
a053d125 3748 "openssl_options parse error: %s", openssl_options);
77bb000f
PP
3749# endif
3750 }
32d07012 3751#endif /*SUPPORT_TLS*/
4fab92fb
HSHR
3752
3753if (!nowarn && !keep_environment && environ && *environ)
3754 log_write(0, LOG_MAIN,
3755 "Warning: purging the environment.\n"
3756 " Suggested action: use keep_environment.");
059ec3d9
PH
3757}
3758
3759
3760
3761/*************************************************
3762* Initialize one driver *
3763*************************************************/
3764
3765/* This is called once the driver's generic options, if any, have been read.
3766We can now find the driver, set up defaults for the private options, and
3767unset any "set" bits in the private options table (which might have been
3768set by another incarnation of the same driver).
3769
3770Arguments:
3771 d pointer to driver instance block, with generic
3772 options filled in
3773 drivers_available vector of available drivers
3774 size_of_info size of each block in drivers_available
3775 class class of driver, for error message
3776
3777Returns: pointer to the driver info block
3778*/
3779
3780static driver_info *
3781init_driver(driver_instance *d, driver_info *drivers_available,
3782 int size_of_info, uschar *class)
3783{
3784driver_info *dd;
3785
3786for (dd = drivers_available; dd->driver_name[0] != 0;
3787 dd = (driver_info *)(((uschar *)dd) + size_of_info))
3788 {
3789 if (Ustrcmp(d->driver_name, dd->driver_name) == 0)
3790 {
3791 int i;
3792 int len = dd->options_len;
3793 d->info = dd;
3794 d->options_block = store_get(len);
3795 memcpy(d->options_block, dd->options_block, len);
3796 for (i = 0; i < *(dd->options_count); i++)
3797 dd->options[i].type &= ~opt_set;
3798 return dd;
3799 }
3800 }
3801
3802log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
3803 "%s %s: cannot find %s driver \"%s\"", class, d->name, class, d->driver_name);
3804
3805return NULL; /* never obeyed */
3806}
3807
3808
3809
3810
3811/*************************************************
3812* Initialize driver list *
3813*************************************************/
3814
3815/* This function is called for routers, transports, and authentication
3816mechanisms. It reads the data from the current point in the configuration file
3817up to the end of the section, and sets up a chain of instance blocks according
3818to the file's contents. The file will already have been opened by a call to
3819readconf_main, and must be left open for subsequent reading of further data.
3820
3821Any errors cause a panic crash. Note that the blocks with names driver_info and
3822driver_instance must map the first portions of all the _info and _instance
3823blocks for this shared code to work.
3824
3825Arguments:
3826 class "router", "transport", or "authenticator"
3827 anchor &routers, &transports, &auths
3828 drivers_available available drivers
3829