Bail out if a configuration file starts with a byte order mark
[exim.git] / src / src / readconf.c
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1/*************************************************
2* Exim - an Internet mail transport agent *
3*************************************************/
4
80fea873 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);
3257ed4b 19static void print_config(BOOL admin, BOOL terse);
c0b9d3e8 20static void readconf_options_auths(void);
2478dbdf 21
1ad6489e 22
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23#define CSTATE_STACK_SIZE 10
24
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25const uschar *config_directory = NULL;
26
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27
28/* Structure for chain (stack) of .included files */
29
30typedef struct config_file_item {
31 struct config_file_item *next;
18d6b513 32 const uschar *filename;
29f67888 33 const uschar *directory;
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34 FILE *file;
35 int lineno;
36} config_file_item;
37
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38/* Structure for chain of configuration lines (-bP config) */
39
40typedef struct config_line_item {
41 struct config_line_item *next;
42 uschar *line;
43} config_line_item;
44
45static config_line_item* config_lines;
46
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47/* Structure of table of conditional words and their state transitions */
48
49typedef struct cond_item {
50 uschar *name;
51 int namelen;
52 int action1;
53 int action2;
54 int pushpop;
55} cond_item;
56
57/* Structure of table of syslog facility names and values */
58
59typedef struct syslog_fac_item {
60 uschar *name;
61 int value;
62} syslog_fac_item;
63
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64/* constants */
65static const char * const hidden = "<value not displayable>";
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66
67/* Static variables */
68
69static config_file_item *config_file_stack = NULL; /* For includes */
70
71static uschar *syslog_facility_str = NULL;
72static uschar next_section[24];
73static uschar time_buffer[24];
74
75/* State variables for conditional loading (.ifdef / .else / .endif) */
76
77static int cstate = 0;
78static int cstate_stack_ptr = -1;
79static int cstate_stack[CSTATE_STACK_SIZE];
80
81/* Table of state transitions for handling conditional inclusions. There are
82four possible state transitions:
83
84 .ifdef true
85 .ifdef false
86 .elifdef true (or .else)
87 .elifdef false
88
89.endif just causes the previous cstate to be popped off the stack */
90
91static int next_cstate[3][4] =
92 {
93 /* State 0: reading from file, or reading until next .else or .endif */
94 { 0, 1, 2, 2 },
95 /* State 1: condition failed, skipping until next .else or .endif */
96 { 2, 2, 0, 1 },
97 /* State 2: skipping until .endif */
98 { 2, 2, 2, 2 },
99 };
100
101/* Table of conditionals and the states to set. For each name, there are four
102values: the length of the name (to save computing it each time), the state to
103set if a macro was found in the line, the state to set if a macro was not found
104in the line, and a stack manipulation setting which is:
105
106 -1 pull state value off the stack
107 0 don't alter the stack
108 +1 push value onto stack, before setting new state
109*/
110
111static cond_item cond_list[] = {
112 { US"ifdef", 5, 0, 1, 1 },
113 { US"ifndef", 6, 1, 0, 1 },
114 { US"elifdef", 7, 2, 3, 0 },
115 { US"elifndef", 8, 3, 2, 0 },
116 { US"else", 4, 2, 2, 0 },
117 { US"endif", 5, 0, 0, -1 }
118};
119
120static int cond_list_size = sizeof(cond_list)/sizeof(cond_item);
121
122/* Table of syslog facility names and their values */
123
124static syslog_fac_item syslog_list[] = {
125 { US"mail", LOG_MAIL },
126 { US"user", LOG_USER },
127 { US"news", LOG_NEWS },
128 { US"uucp", LOG_UUCP },
129 { US"local0", LOG_LOCAL0 },
130 { US"local1", LOG_LOCAL1 },
131 { US"local2", LOG_LOCAL2 },
132 { US"local3", LOG_LOCAL3 },
133 { US"local4", LOG_LOCAL4 },
134 { US"local5", LOG_LOCAL5 },
135 { US"local6", LOG_LOCAL6 },
136 { US"local7", LOG_LOCAL7 },
137 { US"daemon", LOG_DAEMON }
138};
139
140static int syslog_list_size = sizeof(syslog_list)/sizeof(syslog_fac_item);
141
142
143
144
145/*************************************************
146* Main configuration options *
147*************************************************/
148
149/* The list of options that can be set in the main configuration file. This
150must be in alphabetic order because it is searched by binary chop. */
151
152static optionlist optionlist_config[] = {
153 { "*set_exim_group", opt_bool|opt_hidden, &exim_gid_set },
154 { "*set_exim_user", opt_bool|opt_hidden, &exim_uid_set },
155 { "*set_system_filter_group", opt_bool|opt_hidden, &system_filter_gid_set },
156 { "*set_system_filter_user", opt_bool|opt_hidden, &system_filter_uid_set },
157 { "accept_8bitmime", opt_bool, &accept_8bitmime },
158 { "acl_not_smtp", opt_stringptr, &acl_not_smtp },
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159#ifdef WITH_CONTENT_SCAN
160 { "acl_not_smtp_mime", opt_stringptr, &acl_not_smtp_mime },
161#endif
45b91596 162 { "acl_not_smtp_start", opt_stringptr, &acl_not_smtp_start },
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163 { "acl_smtp_auth", opt_stringptr, &acl_smtp_auth },
164 { "acl_smtp_connect", opt_stringptr, &acl_smtp_connect },
165 { "acl_smtp_data", opt_stringptr, &acl_smtp_data },
8ccd00b1 166#ifndef DISABLE_PRDR
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167 { "acl_smtp_data_prdr", opt_stringptr, &acl_smtp_data_prdr },
168#endif
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169#ifndef DISABLE_DKIM
170 { "acl_smtp_dkim", opt_stringptr, &acl_smtp_dkim },
171#endif
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172 { "acl_smtp_etrn", opt_stringptr, &acl_smtp_etrn },
173 { "acl_smtp_expn", opt_stringptr, &acl_smtp_expn },
174 { "acl_smtp_helo", opt_stringptr, &acl_smtp_helo },
175 { "acl_smtp_mail", opt_stringptr, &acl_smtp_mail },
176 { "acl_smtp_mailauth", opt_stringptr, &acl_smtp_mailauth },
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177#ifdef WITH_CONTENT_SCAN
178 { "acl_smtp_mime", opt_stringptr, &acl_smtp_mime },
179#endif
8f128379 180 { "acl_smtp_notquit", opt_stringptr, &acl_smtp_notquit },
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181 { "acl_smtp_predata", opt_stringptr, &acl_smtp_predata },
182 { "acl_smtp_quit", opt_stringptr, &acl_smtp_quit },
183 { "acl_smtp_rcpt", opt_stringptr, &acl_smtp_rcpt },
184#ifdef SUPPORT_TLS
185 { "acl_smtp_starttls", opt_stringptr, &acl_smtp_starttls },
186#endif
187 { "acl_smtp_vrfy", opt_stringptr, &acl_smtp_vrfy },
bc3c7bb7 188 { "add_environment", opt_stringptr, &add_environment },
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189 { "admin_groups", opt_gidlist, &admin_groups },
190 { "allow_domain_literals", opt_bool, &allow_domain_literals },
191 { "allow_mx_to_ip", opt_bool, &allow_mx_to_ip },
192 { "allow_utf8_domains", opt_bool, &allow_utf8_domains },
193 { "auth_advertise_hosts", opt_stringptr, &auth_advertise_hosts },
194 { "auto_thaw", opt_time, &auto_thaw },
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195#ifdef WITH_CONTENT_SCAN
196 { "av_scanner", opt_stringptr, &av_scanner },
197#endif
059ec3d9 198 { "bi_command", opt_stringptr, &bi_command },
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199#ifdef EXPERIMENTAL_BRIGHTMAIL
200 { "bmi_config_file", opt_stringptr, &bmi_config_file },
201#endif
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202 { "bounce_message_file", opt_stringptr, &bounce_message_file },
203 { "bounce_message_text", opt_stringptr, &bounce_message_text },
204 { "bounce_return_body", opt_bool, &bounce_return_body },
62b7cd08 205 { "bounce_return_linesize_limit", opt_mkint, &bounce_return_linesize_limit },
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206 { "bounce_return_message", opt_bool, &bounce_return_message },
207 { "bounce_return_size_limit", opt_mkint, &bounce_return_size_limit },
208 { "bounce_sender_authentication",opt_stringptr,&bounce_sender_authentication },
209 { "callout_domain_negative_expire", opt_time, &callout_cache_domain_negative_expire },
210 { "callout_domain_positive_expire", opt_time, &callout_cache_domain_positive_expire },
211 { "callout_negative_expire", opt_time, &callout_cache_negative_expire },
212 { "callout_positive_expire", opt_time, &callout_cache_positive_expire },
213 { "callout_random_local_part",opt_stringptr, &callout_random_local_part },
214 { "check_log_inodes", opt_int, &check_log_inodes },
215 { "check_log_space", opt_Kint, &check_log_space },
a0d6ba8a 216 { "check_rfc2047_length", opt_bool, &check_rfc2047_length },
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217 { "check_spool_inodes", opt_int, &check_spool_inodes },
218 { "check_spool_space", opt_Kint, &check_spool_space },
aa368db3 219 { "chunking_advertise_hosts", opt_stringptr, &chunking_advertise_hosts },
f33875c3 220 { "commandline_checks_require_admin", opt_bool,&commandline_checks_require_admin },
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221 { "daemon_smtp_port", opt_stringptr|opt_hidden, &daemon_smtp_port },
222 { "daemon_smtp_ports", opt_stringptr, &daemon_smtp_port },
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223 { "daemon_startup_retries", opt_int, &daemon_startup_retries },
224 { "daemon_startup_sleep", opt_time, &daemon_startup_sleep },
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225#ifdef EXPERIMENTAL_DCC
226 { "dcc_direct_add_header", opt_bool, &dcc_direct_add_header },
227 { "dccifd_address", opt_stringptr, &dccifd_address },
228 { "dccifd_options", opt_stringptr, &dccifd_options },
229#endif
64073d9c 230 { "debug_store", opt_bool, &debug_store },
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231 { "delay_warning", opt_timelist, &delay_warning },
232 { "delay_warning_condition", opt_stringptr, &delay_warning_condition },
233 { "deliver_drop_privilege", opt_bool, &deliver_drop_privilege },
234 { "deliver_queue_load_max", opt_fixed, &deliver_queue_load_max },
235 { "delivery_date_remove", opt_bool, &delivery_date_remove },
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236#ifdef ENABLE_DISABLE_FSYNC
237 { "disable_fsync", opt_bool, &disable_fsync },
238#endif
7e66e54d 239 { "disable_ipv6", opt_bool, &disable_ipv6 },
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240#ifndef DISABLE_DKIM
241 { "dkim_verify_signers", opt_stringptr, &dkim_verify_signers },
242#endif
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243#ifdef EXPERIMENTAL_DMARC
244 { "dmarc_forensic_sender", opt_stringptr, &dmarc_forensic_sender },
245 { "dmarc_history_file", opt_stringptr, &dmarc_history_file },
246 { "dmarc_tld_file", opt_stringptr, &dmarc_tld_file },
247#endif
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248 { "dns_again_means_nonexist", opt_stringptr, &dns_again_means_nonexist },
249 { "dns_check_names_pattern", opt_stringptr, &check_dns_names_pattern },
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250 { "dns_csa_search_limit", opt_int, &dns_csa_search_limit },
251 { "dns_csa_use_reverse", opt_bool, &dns_csa_use_reverse },
83712b39 252 { "dns_dnssec_ok", opt_int, &dns_dnssec_ok },
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253 { "dns_ipv4_lookup", opt_stringptr, &dns_ipv4_lookup },
254 { "dns_retrans", opt_time, &dns_retrans },
255 { "dns_retry", opt_int, &dns_retry },
9820a77f 256 { "dns_trust_aa", opt_stringptr, &dns_trust_aa },
e97d1f08 257 { "dns_use_edns0", opt_int, &dns_use_edns0 },
4c04137d 258 /* This option is now a no-op, retained for compatibility */
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259 { "drop_cr", opt_bool, &drop_cr },
260/*********************************************************/
6c1c3d1d 261 { "dsn_advertise_hosts", opt_stringptr, &dsn_advertise_hosts },
0e22dfd1 262 { "dsn_from", opt_stringptr, &dsn_from },
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263 { "envelope_to_remove", opt_bool, &envelope_to_remove },
264 { "errors_copy", opt_stringptr, &errors_copy },
265 { "errors_reply_to", opt_stringptr, &errors_reply_to },
0cbf2b82 266#ifndef DISABLE_EVENT
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267 { "event_action", opt_stringptr, &event_action },
268#endif
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269 { "exim_group", opt_gid, &exim_gid },
270 { "exim_path", opt_stringptr, &exim_path },
271 { "exim_user", opt_uid, &exim_uid },
272 { "extra_local_interfaces", opt_stringptr, &extra_local_interfaces },
273 { "extract_addresses_remove_arguments", opt_bool, &extract_addresses_remove_arguments },
274 { "finduser_retries", opt_int, &finduser_retries },
275 { "freeze_tell", opt_stringptr, &freeze_tell },
276 { "gecos_name", opt_stringptr, &gecos_name },
277 { "gecos_pattern", opt_stringptr, &gecos_pattern },
83da1223 278#ifdef SUPPORT_TLS
2519e60d 279 { "gnutls_allow_auto_pkcs11", opt_bool, &gnutls_allow_auto_pkcs11 },
e6060e2c 280 { "gnutls_compat_mode", opt_bool, &gnutls_compat_mode },
83da1223 281#endif
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282 { "header_line_maxsize", opt_int, &header_line_maxsize },
283 { "header_maxsize", opt_int, &header_maxsize },
284 { "headers_charset", opt_stringptr, &headers_charset },
285 { "helo_accept_junk_hosts", opt_stringptr, &helo_accept_junk_hosts },
286 { "helo_allow_chars", opt_stringptr, &helo_allow_chars },
287 { "helo_lookup_domains", opt_stringptr, &helo_lookup_domains },
288 { "helo_try_verify_hosts", opt_stringptr, &helo_try_verify_hosts },
289 { "helo_verify_hosts", opt_stringptr, &helo_verify_hosts },
290 { "hold_domains", opt_stringptr, &hold_domains },
291 { "host_lookup", opt_stringptr, &host_lookup },
292 { "host_lookup_order", opt_stringptr, &host_lookup_order },
293 { "host_reject_connection", opt_stringptr, &host_reject_connection },
294 { "hosts_connection_nolog", opt_stringptr, &hosts_connection_nolog },
cee5f132 295#ifdef SUPPORT_PROXY
7a2fa0bc 296 { "hosts_proxy", opt_stringptr, &hosts_proxy },
cee5f132 297#endif
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298 { "hosts_treat_as_local", opt_stringptr, &hosts_treat_as_local },
299#ifdef LOOKUP_IBASE
300 { "ibase_servers", opt_stringptr, &ibase_servers },
301#endif
302 { "ignore_bounce_errors_after", opt_time, &ignore_bounce_errors_after },
303 { "ignore_fromline_hosts", opt_stringptr, &ignore_fromline_hosts },
304 { "ignore_fromline_local", opt_bool, &ignore_fromline_local },
bc3c7bb7 305 { "keep_environment", opt_stringptr, &keep_environment },
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306 { "keep_malformed", opt_time, &keep_malformed },
307#ifdef LOOKUP_LDAP
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308 { "ldap_ca_cert_dir", opt_stringptr, &eldap_ca_cert_dir },
309 { "ldap_ca_cert_file", opt_stringptr, &eldap_ca_cert_file },
310 { "ldap_cert_file", opt_stringptr, &eldap_cert_file },
311 { "ldap_cert_key", opt_stringptr, &eldap_cert_key },
312 { "ldap_cipher_suite", opt_stringptr, &eldap_cipher_suite },
059ec3d9 313 { "ldap_default_servers", opt_stringptr, &eldap_default_servers },
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314 { "ldap_require_cert", opt_stringptr, &eldap_require_cert },
315 { "ldap_start_tls", opt_bool, &eldap_start_tls },
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316 { "ldap_version", opt_int, &eldap_version },
317#endif
318 { "local_from_check", opt_bool, &local_from_check },
319 { "local_from_prefix", opt_stringptr, &local_from_prefix },
320 { "local_from_suffix", opt_stringptr, &local_from_suffix },
321 { "local_interfaces", opt_stringptr, &local_interfaces },
322 { "local_scan_timeout", opt_time, &local_scan_timeout },
323 { "local_sender_retain", opt_bool, &local_sender_retain },
324 { "localhost_number", opt_stringptr, &host_number_string },
325 { "log_file_path", opt_stringptr, &log_file_path },
326 { "log_selector", opt_stringptr, &log_selector_string },
327 { "log_timezone", opt_bool, &log_timezone },
328 { "lookup_open_max", opt_int, &lookup_open_max },
329 { "max_username_length", opt_int, &max_username_length },
ddea74fa 330 { "message_body_newlines", opt_bool, &message_body_newlines },
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331 { "message_body_visible", opt_mkint, &message_body_visible },
332 { "message_id_header_domain", opt_stringptr, &message_id_domain },
333 { "message_id_header_text", opt_stringptr, &message_id_text },
334 { "message_logs", opt_bool, &message_logs },
335 { "message_size_limit", opt_stringptr, &message_size_limit },
336#ifdef SUPPORT_MOVE_FROZEN_MESSAGES
337 { "move_frozen_messages", opt_bool, &move_frozen_messages },
338#endif
339 { "mua_wrapper", opt_bool, &mua_wrapper },
340#ifdef LOOKUP_MYSQL
341 { "mysql_servers", opt_stringptr, &mysql_servers },
342#endif
343 { "never_users", opt_uidlist, &never_users },
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344#ifdef SUPPORT_TLS
345 { "openssl_options", opt_stringptr, &openssl_options },
346#endif
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347#ifdef LOOKUP_ORACLE
348 { "oracle_servers", opt_stringptr, &oracle_servers },
349#endif
350 { "percent_hack_domains", opt_stringptr, &percent_hack_domains },
351#ifdef EXIM_PERL
352 { "perl_at_start", opt_bool, &opt_perl_at_start },
353 { "perl_startup", opt_stringptr, &opt_perl_startup },
2f680c0c 354 { "perl_taintmode", opt_bool, &opt_perl_taintmode },
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355#endif
356#ifdef LOOKUP_PGSQL
357 { "pgsql_servers", opt_stringptr, &pgsql_servers },
358#endif
359 { "pid_file_path", opt_stringptr, &pid_file_path },
360 { "pipelining_advertise_hosts", opt_stringptr, &pipelining_advertise_hosts },
8ccd00b1 361#ifndef DISABLE_PRDR
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362 { "prdr_enable", opt_bool, &prdr_enable },
363#endif
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364 { "preserve_message_logs", opt_bool, &preserve_message_logs },
365 { "primary_hostname", opt_stringptr, &primary_hostname },
366 { "print_topbitchars", opt_bool, &print_topbitchars },
367 { "process_log_path", opt_stringptr, &process_log_path },
368 { "prod_requires_admin", opt_bool, &prod_requires_admin },
369 { "qualify_domain", opt_stringptr, &qualify_domain_sender },
370 { "qualify_recipient", opt_stringptr, &qualify_domain_recipient },
371 { "queue_domains", opt_stringptr, &queue_domains },
372 { "queue_list_requires_admin",opt_bool, &queue_list_requires_admin },
373 { "queue_only", opt_bool, &queue_only },
374 { "queue_only_file", opt_stringptr, &queue_only_file },
375 { "queue_only_load", opt_fixed, &queue_only_load },
8669f003 376 { "queue_only_load_latch", opt_bool, &queue_only_load_latch },
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377 { "queue_only_override", opt_bool, &queue_only_override },
378 { "queue_run_in_order", opt_bool, &queue_run_in_order },
0cd5fd23 379 { "queue_run_max", opt_stringptr, &queue_run_max },
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380 { "queue_smtp_domains", opt_stringptr, &queue_smtp_domains },
381 { "receive_timeout", opt_time, &receive_timeout },
382 { "received_header_text", opt_stringptr, &received_header_text },
383 { "received_headers_max", opt_int, &received_headers_max },
384 { "recipient_unqualified_hosts", opt_stringptr, &recipient_unqualified_hosts },
385 { "recipients_max", opt_int, &recipients_max },
386 { "recipients_max_reject", opt_bool, &recipients_max_reject },
de78e2d5 387#ifdef LOOKUP_REDIS
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388 { "redis_servers", opt_stringptr, &redis_servers },
389#endif
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390 { "remote_max_parallel", opt_int, &remote_max_parallel },
391 { "remote_sort_domains", opt_stringptr, &remote_sort_domains },
392 { "retry_data_expire", opt_time, &retry_data_expire },
393 { "retry_interval_max", opt_time, &retry_interval_max },
394 { "return_path_remove", opt_bool, &return_path_remove },
395 { "return_size_limit", opt_mkint|opt_hidden, &bounce_return_size_limit },
396 { "rfc1413_hosts", opt_stringptr, &rfc1413_hosts },
397 { "rfc1413_query_timeout", opt_time, &rfc1413_query_timeout },
398 { "sender_unqualified_hosts", opt_stringptr, &sender_unqualified_hosts },
846430d9 399 { "slow_lookup_log", opt_int, &slow_lookup_log },
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400 { "smtp_accept_keepalive", opt_bool, &smtp_accept_keepalive },
401 { "smtp_accept_max", opt_int, &smtp_accept_max },
402 { "smtp_accept_max_nonmail", opt_int, &smtp_accept_max_nonmail },
403 { "smtp_accept_max_nonmail_hosts", opt_stringptr, &smtp_accept_max_nonmail_hosts },
404 { "smtp_accept_max_per_connection", opt_int, &smtp_accept_max_per_connection },
405 { "smtp_accept_max_per_host", opt_stringptr, &smtp_accept_max_per_host },
406 { "smtp_accept_queue", opt_int, &smtp_accept_queue },
407 { "smtp_accept_queue_per_connection", opt_int, &smtp_accept_queue_per_connection },
408 { "smtp_accept_reserve", opt_int, &smtp_accept_reserve },
409 { "smtp_active_hostname", opt_stringptr, &raw_active_hostname },
410 { "smtp_banner", opt_stringptr, &smtp_banner },
411 { "smtp_check_spool_space", opt_bool, &smtp_check_spool_space },
412 { "smtp_connect_backlog", opt_int, &smtp_connect_backlog },
413 { "smtp_enforce_sync", opt_bool, &smtp_enforce_sync },
414 { "smtp_etrn_command", opt_stringptr, &smtp_etrn_command },
415 { "smtp_etrn_serialize", opt_bool, &smtp_etrn_serialize },
416 { "smtp_load_reserve", opt_fixed, &smtp_load_reserve },
417 { "smtp_max_synprot_errors", opt_int, &smtp_max_synprot_errors },
418 { "smtp_max_unknown_commands",opt_int, &smtp_max_unknown_commands },
419 { "smtp_ratelimit_hosts", opt_stringptr, &smtp_ratelimit_hosts },
420 { "smtp_ratelimit_mail", opt_stringptr, &smtp_ratelimit_mail },
421 { "smtp_ratelimit_rcpt", opt_stringptr, &smtp_ratelimit_rcpt },
1ad6489e 422 { "smtp_receive_timeout", opt_func, &fn_smtp_receive_timeout },
059ec3d9
PH
423 { "smtp_reserve_hosts", opt_stringptr, &smtp_reserve_hosts },
424 { "smtp_return_error_details",opt_bool, &smtp_return_error_details },
8c5d388a 425#ifdef SUPPORT_I18N
3d1451ea
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426 { "smtputf8_advertise_hosts", opt_stringptr, &smtputf8_advertise_hosts },
427#endif
8523533c
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428#ifdef WITH_CONTENT_SCAN
429 { "spamd_address", opt_stringptr, &spamd_address },
430#endif
65a7d8c3
NM
431#ifdef EXPERIMENTAL_SPF
432 { "spf_guess", opt_stringptr, &spf_guess },
433#endif
059ec3d9
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434 { "split_spool_directory", opt_bool, &split_spool_directory },
435 { "spool_directory", opt_stringptr, &spool_directory },
328c5688 436 { "spool_wireformat", opt_bool, &spool_wireformat },
31480e42
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437#ifdef LOOKUP_SQLITE
438 { "sqlite_lock_timeout", opt_int, &sqlite_lock_timeout },
439#endif
8523533c
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440#ifdef EXPERIMENTAL_SRS
441 { "srs_config", opt_stringptr, &srs_config },
384152a6
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442 { "srs_hashlength", opt_int, &srs_hashlength },
443 { "srs_hashmin", opt_int, &srs_hashmin },
444 { "srs_maxage", opt_int, &srs_maxage },
445 { "srs_secrets", opt_stringptr, &srs_secrets },
446 { "srs_usehash", opt_bool, &srs_usehash },
447 { "srs_usetimestamp", opt_bool, &srs_usetimestamp },
8523533c 448#endif
38a0a95f 449 { "strict_acl_vars", opt_bool, &strict_acl_vars },
059ec3d9
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450 { "strip_excess_angle_brackets", opt_bool, &strip_excess_angle_brackets },
451 { "strip_trailing_dot", opt_bool, &strip_trailing_dot },
452 { "syslog_duplication", opt_bool, &syslog_duplication },
453 { "syslog_facility", opt_stringptr, &syslog_facility_str },
2333e06f 454 { "syslog_pid", opt_bool, &syslog_pid },
059ec3d9
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455 { "syslog_processname", opt_stringptr, &syslog_processname },
456 { "syslog_timestamp", opt_bool, &syslog_timestamp },
457 { "system_filter", opt_stringptr, &system_filter },
458 { "system_filter_directory_transport", opt_stringptr,&system_filter_directory_transport },
459 { "system_filter_file_transport",opt_stringptr,&system_filter_file_transport },
460 { "system_filter_group", opt_gid, &system_filter_gid },
461 { "system_filter_pipe_transport",opt_stringptr,&system_filter_pipe_transport },
462 { "system_filter_reply_transport",opt_stringptr,&system_filter_reply_transport },
463 { "system_filter_user", opt_uid, &system_filter_uid },
464 { "tcp_nodelay", opt_bool, &tcp_nodelay },
5dc43717
JJ
465#ifdef USE_TCP_WRAPPERS
466 { "tcp_wrappers_daemon_name", opt_stringptr, &tcp_wrappers_daemon_name },
467#endif
059ec3d9
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468 { "timeout_frozen_after", opt_time, &timeout_frozen_after },
469 { "timezone", opt_stringptr, &timezone_string },
059ec3d9 470 { "tls_advertise_hosts", opt_stringptr, &tls_advertise_hosts },
23f3dc67 471#ifdef SUPPORT_TLS
059ec3d9
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472 { "tls_certificate", opt_stringptr, &tls_certificate },
473 { "tls_crl", opt_stringptr, &tls_crl },
3375e053 474 { "tls_dh_max_bits", opt_int, &tls_dh_max_bits },
059ec3d9 475 { "tls_dhparam", opt_stringptr, &tls_dhparam },
10ca4f1c 476 { "tls_eccurve", opt_stringptr, &tls_eccurve },
f2de3a33 477# ifndef DISABLE_OCSP
3f7eeb86 478 { "tls_ocsp_file", opt_stringptr, &tls_ocsp_file },
817d9f57
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479# endif
480 { "tls_on_connect_ports", opt_stringptr, &tls_in.on_connect_ports },
059ec3d9
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481 { "tls_privatekey", opt_stringptr, &tls_privatekey },
482 { "tls_remember_esmtp", opt_bool, &tls_remember_esmtp },
483 { "tls_require_ciphers", opt_stringptr, &tls_require_ciphers },
484 { "tls_try_verify_hosts", opt_stringptr, &tls_try_verify_hosts },
485 { "tls_verify_certificates", opt_stringptr, &tls_verify_certificates },
486 { "tls_verify_hosts", opt_stringptr, &tls_verify_hosts },
487#endif
488 { "trusted_groups", opt_gidlist, &trusted_groups },
489 { "trusted_users", opt_uidlist, &trusted_users },
490 { "unknown_login", opt_stringptr, &unknown_login },
491 { "unknown_username", opt_stringptr, &unknown_username },
492 { "untrusted_set_sender", opt_stringptr, &untrusted_set_sender },
493 { "uucp_from_pattern", opt_stringptr, &uucp_from_pattern },
494 { "uucp_from_sender", opt_stringptr, &uucp_from_sender },
495 { "warn_message_file", opt_stringptr, &warn_message_file },
496 { "write_rejectlog", opt_bool, &write_rejectlog }
497};
498
d7bed771 499static int optionlist_config_size = nelem(optionlist_config);
059ec3d9
PH
500
501
502
503/*************************************************
504* Find the name of an option *
505*************************************************/
506
507/* This function is to aid debugging. Various functions take arguments that are
508pointer variables in the options table or in option tables for various drivers.
509For debugging output, it is useful to be able to find the name of the option
510which is currently being processed. This function finds it, if it exists, by
511searching the table(s).
512
513Arguments: a value that is presumed to be in the table above
514Returns: the option name, or an empty string
515*/
516
517uschar *
518readconf_find_option(void *p)
519{
520int i;
521router_instance *r;
522transport_instance *t;
523
c0b9d3e8 524for (i = 0; i < nelem(optionlist_config); i++)
059ec3d9
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525 if (p == optionlist_config[i].value) return US optionlist_config[i].name;
526
d7bed771 527for (r = routers; r; r = r->next)
059ec3d9
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528 {
529 router_info *ri = r->info;
c4b738a9 530 for (i = 0; i < *ri->options_count; i++)
059ec3d9
PH
531 {
532 if ((ri->options[i].type & opt_mask) != opt_stringptr) continue;
533 if (p == (char *)(r->options_block) + (long int)(ri->options[i].value))
534 return US ri->options[i].name;
535 }
536 }
537
d7bed771 538for (t = transports; t; t = t->next)
059ec3d9
PH
539 {
540 transport_info *ti = t->info;
c4b738a9 541 for (i = 0; i < *ti->options_count; i++)
059ec3d9 542 {
c4b738a9
JH
543 optionlist * op = &ti->options[i];
544 if ((op->type & opt_mask) != opt_stringptr) continue;
545 if (p == ( op->type & opt_public
546 ? (char *)t
547 : (char *)t->options_block
548 )
549 + (long int)op->value)
550 return US op->name;
059ec3d9
PH
551 }
552 }
553
554return US"";
555}
556
557
558
559
cf00dad6
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560/*************************************************
561* Deal with an assignment to a macro *
562*************************************************/
563
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564/* We have a new definition. The macro_item structure includes a final vector
565called "name" which is one byte long. Thus, adding "namelen" gives us enough
8e6c4db1
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566room to store the "name" string.
567If a builtin macro we place at head of list, else tail. This lets us lazy-create
568builtins. */
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569
570macro_item *
8e6c4db1
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571macro_create(const uschar * name, const uschar * val,
572 BOOL command_line, BOOL builtin)
c193398d
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573{
574unsigned namelen = Ustrlen(name);
575macro_item * m = store_get(sizeof(macro_item) + namelen);
576
81f0a58e 577/* fprintf(stderr, "%s: '%s' '%s'\n", __FUNCTION__, name, val) */
8e6c4db1
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578if (!macros)
579 {
580 macros = m;
581 mlast = m;
582 m->next = NULL;
583 }
584else if (builtin)
585 {
586 m->next = macros;
587 macros = m;
588 }
589else
590 {
591 mlast->next = m;
592 mlast = m;
593 m->next = NULL;
594 }
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595m->command_line = command_line;
596m->namelen = namelen;
597m->replacement = string_copy(val);
598Ustrcpy(m->name, name);
599return m;
600}
601
602
cf00dad6
PH
603/* This function is called when a line that starts with an upper case letter is
604encountered. The argument "line" should contain a complete logical line, and
605start with the first letter of the macro name. The macro name and the
606replacement text are extracted and stored. Redefinition of existing,
607non-command line, macros is permitted using '==' instead of '='.
608
609Arguments:
610 s points to the start of the logical line
611
612Returns: nothing
613*/
614
dc5d51dc 615static void
cf00dad6
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616read_macro_assignment(uschar *s)
617{
618uschar name[64];
619int namelen = 0;
620BOOL redef = FALSE;
621macro_item *m;
cf00dad6
PH
622
623while (isalnum(*s) || *s == '_')
624 {
625 if (namelen >= sizeof(name) - 1)
626 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
ef840681 627 "macro name too long (maximum is " SIZE_T_FMT " characters)", sizeof(name) - 1);
cf00dad6
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628 name[namelen++] = *s++;
629 }
630name[namelen] = 0;
631
632while (isspace(*s)) s++;
633if (*s++ != '=')
634 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "malformed macro definition");
635
636if (*s == '=')
637 {
638 redef = TRUE;
639 s++;
640 }
641while (isspace(*s)) s++;
642
643/* If an existing macro of the same name was defined on the command line, we
644just skip this definition. It's an error to attempt to redefine a macro without
645redef set to TRUE, or to redefine a macro when it hasn't been defined earlier.
646It is also an error to define a macro whose name begins with the name of a
c193398d
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647previously defined macro. This is the requirement that make using a tree
648for macros hard; we must check all macros for the substring. Perhaps a
649sorted list, and a bsearch, would work?
650Note: it is documented that the other way round works. */
cf00dad6 651
c193398d 652for (m = macros; m; m = m->next)
cf00dad6 653 {
cf00dad6
PH
654 if (Ustrcmp(m->name, name) == 0)
655 {
656 if (!m->command_line && !redef)
657 log_write(0, LOG_CONFIG|LOG_PANIC_DIE, "macro \"%s\" is already "
658 "defined (use \"==\" if you want to redefine it", name);
659 break;
660 }
661
c193398d 662 if (m->namelen < namelen && Ustrstr(name, m->name) != NULL)
cf00dad6
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663 log_write(0, LOG_CONFIG|LOG_PANIC_DIE, "\"%s\" cannot be defined as "
664 "a macro because previously defined macro \"%s\" is a substring",
665 name, m->name);
666
667 /* We cannot have this test, because it is documented that a substring
668 macro is permitted (there is even an example).
669 *
c193398d 670 * if (m->namelen > namelen && Ustrstr(m->name, name) != NULL)
cf00dad6
PH
671 * log_write(0, LOG_CONFIG|LOG_PANIC_DIE, "\"%s\" cannot be defined as "
672 * "a macro because it is a substring of previously defined macro \"%s\"",
673 * name, m->name);
674 */
cf00dad6
PH
675 }
676
677/* Check for an overriding command-line definition. */
678
c193398d 679if (m && m->command_line) return;
cf00dad6
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680
681/* Redefinition must refer to an existing macro. */
682
683if (redef)
c193398d
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684 if (m)
685 m->replacement = string_copy(s);
686 else
cf00dad6
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687 log_write(0, LOG_CONFIG|LOG_PANIC_DIE, "can't redefine an undefined macro "
688 "\"%s\"", name);
cf00dad6 689
c193398d 690/* We have a new definition. */
cf00dad6 691else
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692 (void) macro_create(name, s, FALSE, FALSE);
693}
694
695
696
697
698
699/*************************************************/
700/* Create compile-time feature macros */
701static void
702readconf_features(void)
703{
704/* Probably we could work out a static initialiser for wherever
705macros are stored, but this will do for now. Some names are awkward
706due to conflicts with other common macros. */
707
708#ifdef SUPPORT_CRYPTEQ
709 macro_create(US"_HAVE_CRYPTEQ", US"y", FALSE, TRUE);
710#endif
711#if HAVE_ICONV
712 macro_create(US"_HAVE_ICONV", US"y", FALSE, TRUE);
713#endif
714#if HAVE_IPV6
715 macro_create(US"_HAVE_IPV6", US"y", FALSE, TRUE);
716#endif
717#ifdef HAVE_SETCLASSRESOURCES
718 macro_create(US"_HAVE_SETCLASSRESOURCES", US"y", FALSE, TRUE);
719#endif
720#ifdef SUPPORT_PAM
721 macro_create(US"_HAVE_PAM", US"y", FALSE, TRUE);
722#endif
723#ifdef EXIM_PERL
724 macro_create(US"_HAVE_PERL", US"y", FALSE, TRUE);
725#endif
726#ifdef EXPAND_DLFUNC
727 macro_create(US"_HAVE_DLFUNC", US"y", FALSE, TRUE);
728#endif
729#ifdef USE_TCP_WRAPPERS
730 macro_create(US"_HAVE_TCPWRAPPERS", US"y", FALSE, TRUE);
731#endif
732#ifdef SUPPORT_TLS
733 macro_create(US"_HAVE_TLS", US"y", FALSE, TRUE);
734# ifdef USE_GNUTLS
735 macro_create(US"_HAVE_GNUTLS", US"y", FALSE, TRUE);
736# else
737 macro_create(US"_HAVE_OPENSSL", US"y", FALSE, TRUE);
738# endif
739#endif
740#ifdef SUPPORT_TRANSLATE_IP_ADDRESS
741 macro_create(US"_HAVE_TRANSLATE_IP_ADDRESS", US"y", FALSE, TRUE);
742#endif
743#ifdef SUPPORT_MOVE_FROZEN_MESSAGES
744 macro_create(US"_HAVE_MOVE_FROZEN_MESSAGES", US"y", FALSE, TRUE);
745#endif
746#ifdef WITH_CONTENT_SCAN
747 macro_create(US"_HAVE_CONTENT_SCANNING", US"y", FALSE, TRUE);
748#endif
749#ifndef DISABLE_DKIM
750 macro_create(US"_HAVE_DKIM", US"y", FALSE, TRUE);
751#endif
752#ifndef DISABLE_DNSSEC
753 macro_create(US"_HAVE_DNSSEC", US"y", FALSE, TRUE);
754#endif
755#ifndef DISABLE_EVENT
756 macro_create(US"_HAVE_EVENT", US"y", FALSE, TRUE);
757#endif
758#ifdef SUPPORT_I18N
759 macro_create(US"_HAVE_I18N", US"y", FALSE, TRUE);
760#endif
761#ifndef DISABLE_OCSP
762 macro_create(US"_HAVE_OCSP", US"y", FALSE, TRUE);
763#endif
764#ifndef DISABLE_PRDR
765 macro_create(US"_HAVE_PRDR", US"y", FALSE, TRUE);
766#endif
767#ifdef SUPPORT_PROXY
768 macro_create(US"_HAVE_PROXY", US"y", FALSE, TRUE);
769#endif
770#ifdef SUPPORT_SOCKS
771 macro_create(US"_HAVE_SOCKS", US"y", FALSE, TRUE);
772#endif
1a2dfad5
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773#ifdef TCP_FASTOPEN
774 macro_create(US"_HAVE_TCP_FASTOPEN", US"y", FALSE, TRUE);
775#endif
8e6c4db1
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776#ifdef EXPERIMENTAL_LMDB
777 macro_create(US"_HAVE_LMDB", US"y", FALSE, TRUE);
778#endif
779#ifdef EXPERIMENTAL_SPF
780 macro_create(US"_HAVE_SPF", US"y", FALSE, TRUE);
781#endif
782#ifdef EXPERIMENTAL_SRS
783 macro_create(US"_HAVE_SRS", US"y", FALSE, TRUE);
784#endif
785#ifdef EXPERIMENTAL_BRIGHTMAIL
786 macro_create(US"_HAVE_BRIGHTMAIL", US"y", FALSE, TRUE);
787#endif
788#ifdef EXPERIMENTAL_DANE
789 macro_create(US"_HAVE_DANE", US"y", FALSE, TRUE);
790#endif
791#ifdef EXPERIMENTAL_DCC
792 macro_create(US"_HAVE_DCC", US"y", FALSE, TRUE);
793#endif
794#ifdef EXPERIMENTAL_DMARC
795 macro_create(US"_HAVE_DMARC", US"y", FALSE, TRUE);
796#endif
797#ifdef EXPERIMENTAL_DSN_INFO
798 macro_create(US"_HAVE_DSN_INFO", US"y", FALSE, TRUE);
799#endif
800
801#ifdef LOOKUP_LSEARCH
383832ef 802 macro_create(US"_HAVE_LOOKUP_LSEARCH", US"y", FALSE, TRUE);
8e6c4db1
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803#endif
804#ifdef LOOKUP_CDB
383832ef 805 macro_create(US"_HAVE_LOOKUP_CDB", US"y", FALSE, TRUE);
8e6c4db1
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806#endif
807#ifdef LOOKUP_DBM
383832ef 808 macro_create(US"_HAVE_LOOKUP_DBM", US"y", FALSE, TRUE);
8e6c4db1
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809#endif
810#ifdef LOOKUP_DNSDB
383832ef 811 macro_create(US"_HAVE_LOOKUP_DNSDB", US"y", FALSE, TRUE);
8e6c4db1
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812#endif
813#ifdef LOOKUP_DSEARCH
383832ef 814 macro_create(US"_HAVE_LOOKUP_DSEARCH", US"y", FALSE, TRUE);
8e6c4db1
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815#endif
816#ifdef LOOKUP_IBASE
383832ef 817 macro_create(US"_HAVE_LOOKUP_IBASE", US"y", FALSE, TRUE);
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818#endif
819#ifdef LOOKUP_LDAP
383832ef 820 macro_create(US"_HAVE_LOOKUP_LDAP", US"y", FALSE, TRUE);
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821#endif
822#ifdef EXPERIMENTAL_LMDB
383832ef 823 macro_create(US"_HAVE_LOOKUP_LMDB", US"y", FALSE, TRUE);
8e6c4db1
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824#endif
825#ifdef LOOKUP_MYSQL
383832ef 826 macro_create(US"_HAVE_LOOKUP_MYSQL", US"y", FALSE, TRUE);
8e6c4db1
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827#endif
828#ifdef LOOKUP_NIS
383832ef 829 macro_create(US"_HAVE_LOOKUP_NIS", US"y", FALSE, TRUE);
8e6c4db1
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830#endif
831#ifdef LOOKUP_NISPLUS
383832ef 832 macro_create(US"_HAVE_LOOKUP_NISPLUS", US"y", FALSE, TRUE);
8e6c4db1
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833#endif
834#ifdef LOOKUP_ORACLE
383832ef 835 macro_create(US"_HAVE_LOOKUP_ORACLE", US"y", FALSE, TRUE);
8e6c4db1
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836#endif
837#ifdef LOOKUP_PASSWD
383832ef 838 macro_create(US"_HAVE_LOOKUP_PASSWD", US"y", FALSE, TRUE);
8e6c4db1
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839#endif
840#ifdef LOOKUP_PGSQL
383832ef 841 macro_create(US"_HAVE_LOOKUP_PGSQL", US"y", FALSE, TRUE);
8e6c4db1
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842#endif
843#ifdef LOOKUP_REDIS
383832ef 844 macro_create(US"_HAVE_LOOKUP_REDIS", US"y", FALSE, TRUE);
8e6c4db1
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845#endif
846#ifdef LOOKUP_SQLITE
383832ef 847 macro_create(US"_HAVE_LOOKUP_SQLITE", US"y", FALSE, TRUE);
8e6c4db1
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848#endif
849#ifdef LOOKUP_TESTDB
383832ef 850 macro_create(US"_HAVE_LOOKUP_TESTDB", US"y", FALSE, TRUE);
8e6c4db1
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851#endif
852#ifdef LOOKUP_WHOSON
383832ef 853 macro_create(US"_HAVE_LOOKUP_WHOSON", US"y", FALSE, TRUE);
8e6c4db1
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854#endif
855
856#ifdef TRANSPORT_APPENDFILE
857# ifdef SUPPORT_MAILDIR
f988ce57 858 macro_create(US"_HAVE_TRANSPORT_APPEND_MAILDIR", US"y", FALSE, TRUE);
8e6c4db1
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859# endif
860# ifdef SUPPORT_MAILSTORE
383832ef 861 macro_create(US"_HAVE_TRANSPORT_APPEND_MAILSTORE", US"y", FALSE, TRUE);
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862# endif
863# ifdef SUPPORT_MBX
383832ef 864 macro_create(US"_HAVE_TRANSPORT_APPEND_MBX", US"y", FALSE, TRUE);
8e6c4db1
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865# endif
866#endif
867}
868
869
870void
383832ef 871readconf_options_from_list(optionlist * opts, unsigned nopt, const uschar * section, uschar * group)
8e6c4db1
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872{
873int i;
874const uschar * s;
875
81f0a58e
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876/* The 'previously-defined-substring' rule for macros in config file
877lines is done so for these builtin macros: we know that the table
878we source from is in strict alpha order, hence the builtins portion
879of the macros list is in reverse-alpha (we prepend them) - so longer
880macros that have substrings are always discovered first during
881expansion. */
882
863bd541 883for (i = 0; i < nopt; i++) if (*(s = US opts[i].name) && *s != '*')
383832ef
HSHR
884 if (group)
885 macro_create(string_sprintf("_OPT_%T_%T_%T", section, group, s), US"y", FALSE, TRUE);
886 else
887 macro_create(string_sprintf("_OPT_%T_%T", section, s), US"y", FALSE, TRUE);
cf00dad6
PH
888}
889
890
8e6c4db1
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891static void
892readconf_options(void)
893{
383832ef 894readconf_options_from_list(optionlist_config, nelem(optionlist_config), US"MAIN", NULL);
8e6c4db1
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895readconf_options_routers();
896readconf_options_transports();
897readconf_options_auths();
898}
cf00dad6 899
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900static void
901macros_create_builtin(void)
902{
903readconf_features();
904readconf_options();
905macros_builtin_created = TRUE;
906}
cf00dad6 907
059ec3d9
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908
909/*************************************************
910* Read configuration line *
911*************************************************/
912
913/* A logical line of text is read from the configuration file into the big
914buffer, taking account of macros, .includes, and continuations. The size of
915big_buffer is increased if necessary. The count of configuration lines is
916maintained. Physical input lines starting with # (ignoring leading white space,
917and after macro replacement) and empty logical lines are always ignored.
918Leading and trailing spaces are removed.
919
920If we hit a line of the form "begin xxxx", the xxxx is placed in the
921next_section vector, and the function returns NULL, indicating the end of a
922configuration section. On end-of-file, NULL is returned with next_section
923empty.
924
925Arguments: none
926
927Returns: a pointer to the first non-blank in the line,
928 or NULL if eof or end of section is reached
929*/
930
931static uschar *
932get_config_line(void)
933{
934int startoffset = 0; /* To first non-blank char in logical line */
935int len = 0; /* Of logical line so far */
936int newlen;
937uschar *s, *ss;
938macro_item *m;
939BOOL macro_found;
940
941/* Loop for handling continuation lines, skipping comments, and dealing with
942.include files. */
943
944for (;;)
945 {
946 if (Ufgets(big_buffer+len, big_buffer_size-len, config_file) == NULL)
947 {
948 if (config_file_stack != NULL) /* EOF inside .include */
949 {
f1e894f3 950 (void)fclose(config_file);
059ec3d9
PH
951 config_file = config_file_stack->file;
952 config_filename = config_file_stack->filename;
29f67888 953 config_directory = config_file_stack->directory;
059ec3d9
PH
954 config_lineno = config_file_stack->lineno;
955 config_file_stack = config_file_stack->next;
bf3c2c6b
HSHR
956 if (config_lines)
957 save_config_position(config_filename, config_lineno);
059ec3d9
PH
958 continue;
959 }
960
961 /* EOF at top level */
962
963 if (cstate_stack_ptr >= 0)
964 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
965 "Unexpected end of configuration file: .endif missing");
966
967 if (len != 0) break; /* EOF after continuation */
968 next_section[0] = 0; /* EOF at start of logical line */
969 return NULL;
970 }
971
972 config_lineno++;
973 newlen = len + Ustrlen(big_buffer + len);
974
bf3c2c6b
HSHR
975 if (config_lines && config_lineno == 1)
976 save_config_position(config_filename, config_lineno);
977
059ec3d9
PH
978 /* Handle pathologically long physical lines - yes, it did happen - by
979 extending big_buffer at this point. The code also copes with very long
980 logical lines. */
981
982 while (newlen == big_buffer_size - 1 && big_buffer[newlen - 1] != '\n')
983 {
984 uschar *newbuffer;
985 big_buffer_size += BIG_BUFFER_SIZE;
986 newbuffer = store_malloc(big_buffer_size);
987
988 /* This use of strcpy is OK because we know that the string in the old
989 buffer is shorter than the new buffer. */
990
991 Ustrcpy(newbuffer, big_buffer);
992 store_free(big_buffer);
993 big_buffer = newbuffer;
994 if (Ufgets(big_buffer+newlen, big_buffer_size-newlen, config_file) == NULL)
995 break;
996 newlen += Ustrlen(big_buffer + newlen);
997 }
998
999 /* Find the true start of the physical line - leading spaces are always
1000 ignored. */
1001
1002 ss = big_buffer + len;
1003 while (isspace(*ss)) ss++;
1004
1005 /* Process the physical line for macros. If this is the start of the logical
1006 line, skip over initial text at the start of the line if it starts with an
1007 upper case character followed by a sequence of name characters and an equals
1008 sign, because that is the definition of a new macro, and we don't do
1009 replacement therein. */
1010
1011 s = ss;
1012 if (len == 0 && isupper(*s))
1013 {
1014 while (isalnum(*s) || *s == '_') s++;
1015 while (isspace(*s)) s++;
1016 if (*s != '=') s = ss; /* Not a macro definition */
1017 }
1018
8e6c4db1
JH
1019 /* If the builtin macros are not yet defined, and the line contains an
1020 underscrore followed by an one of the three possible chars used by
1021 builtins, create them. */
1022
1023 if (!macros_builtin_created)
1024 {
1025 const uschar * t, * p;
1026 uschar c;
1027 for (t = s; (p = CUstrchr(t, '_')); t = p+1)
1028 if (c = p[1], c == 'O' || c == 'D' || c == 'H')
1029 {
81f0a58e 1030/* fprintf(stderr, "%s: builtins create triggered by '%s'\n", __FUNCTION__, s); */
32b8ce41 1031 builtin_macros_create_trigger = string_copy(s);
8e6c4db1
JH
1032 macros_create_builtin();
1033 break;
1034 }
1035 }
1036
059ec3d9
PH
1037 /* For each defined macro, scan the line (from after XXX= if present),
1038 replacing all occurrences of the macro. */
1039
1040 macro_found = FALSE;
a4034eb8 1041 for (m = macros; m; m = m->next)
059ec3d9
PH
1042 {
1043 uschar *p, *pp;
1044 uschar *t = s;
1045
1046 while ((p = Ustrstr(t, m->name)) != NULL)
1047 {
1048 int moveby;
059ec3d9
PH
1049 int replen = Ustrlen(m->replacement);
1050
81f0a58e 1051/* fprintf(stderr, "%s: matched '%s' in '%s'\n", __FUNCTION__, m->name, t) */
059ec3d9
PH
1052 /* Expand the buffer if necessary */
1053
c193398d 1054 while (newlen - m->namelen + replen + 1 > big_buffer_size)
059ec3d9
PH
1055 {
1056 int newsize = big_buffer_size + BIG_BUFFER_SIZE;
1057 uschar *newbuffer = store_malloc(newsize);
1058 memcpy(newbuffer, big_buffer, newlen + 1);
1059 p = newbuffer + (p - big_buffer);
1060 s = newbuffer + (s - big_buffer);
1061 ss = newbuffer + (ss - big_buffer);
1062 t = newbuffer + (t - big_buffer);
1063 big_buffer_size = newsize;
1064 store_free(big_buffer);
1065 big_buffer = newbuffer;
1066 }
1067
1068 /* Shuffle the remaining characters up or down in the buffer before
1069 copying in the replacement text. Don't rescan the replacement for this
1070 same macro. */
1071
c193398d
JH
1072 pp = p + m->namelen;
1073 if ((moveby = replen - m->namelen) != 0)
059ec3d9
PH
1074 {
1075 memmove(p + replen, pp, (big_buffer + newlen) - pp + 1);
1076 newlen += moveby;
1077 }
1078 Ustrncpy(p, m->replacement, replen);
1079 t = p + replen;
1080 macro_found = TRUE;
1081 }
1082 }
1083
1084 /* An empty macro replacement at the start of a line could mean that ss no
1085 longer points to the first non-blank character. */
1086
1087 while (isspace(*ss)) ss++;
1088
1089 /* Check for comment lines - these are physical lines. */
1090
1091 if (*ss == '#') continue;
1092
1093 /* Handle conditionals, which are also applied to physical lines. Conditions
1094 are of the form ".ifdef ANYTEXT" and are treated as true if any macro
1095 expansion occured on the rest of the line. A preliminary test for the leading
1096 '.' saves effort on most lines. */
1097
1098 if (*ss == '.')
1099 {
1100 int i;
1101
1102 /* Search the list of conditional directives */
1103
1104 for (i = 0; i < cond_list_size; i++)
1105 {
1106 int n;
1107 cond_item *c = cond_list+i;
1108 if (Ustrncmp(ss+1, c->name, c->namelen) != 0) continue;
1109
1110 /* The following character must be white space or end of string */
1111
1112 n = ss[1 + c->namelen];
1113 if (n != ' ' && n != 't' && n != '\n' && n != 0) break;
1114
1115 /* .ifdef and .ifndef push the current state onto the stack, then set
1116 a new one from the table. Stack overflow is an error */
1117
1118 if (c->pushpop > 0)
1119 {
1120 if (cstate_stack_ptr >= CSTATE_STACK_SIZE - 1)
1121 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1122 ".%s nested too deeply", c->name);
1123 cstate_stack[++cstate_stack_ptr] = cstate;
1124 cstate = next_cstate[cstate][macro_found? c->action1 : c->action2];
1125 }
1126
1127 /* For any of the others, stack underflow is an error. The next state
1128 comes either from the stack (.endif) or from the table. */
1129
1130 else
1131 {
1132 if (cstate_stack_ptr < 0)
1133 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1134 ".%s without matching .ifdef", c->name);
1135 cstate = (c->pushpop < 0)? cstate_stack[cstate_stack_ptr--] :
1136 next_cstate[cstate][macro_found? c->action1 : c->action2];
1137 }
1138
1139 /* Having dealt with a directive, break the loop */
1140
1141 break;
1142 }
1143
1144 /* If we have handled a conditional directive, continue with the next
1145 physical line. Otherwise, fall through. */
1146
1147 if (i < cond_list_size) continue;
1148 }
1149
1150 /* If the conditional state is not 0 (actively using these lines), ignore
1151 this input line. */
1152
1153 if (cstate != 0) continue; /* Conditional skip */
1154
1155 /* Handle .include lines - these are also physical lines. */
1156
1157 if (Ustrncmp(ss, ".include", 8) == 0 &&
1158 (isspace(ss[8]) ||
1159 (Ustrncmp(ss+8, "_if_exists", 10) == 0 && isspace(ss[18]))))
1160 {
1161 uschar *t;
1162 int include_if_exists = isspace(ss[8])? 0 : 10;
1163 config_file_item *save;
1164 struct stat statbuf;
1165
1166 ss += 9 + include_if_exists;
1167 while (isspace(*ss)) ss++;
1168 t = ss + Ustrlen(ss);
1169 while (t > ss && isspace(t[-1])) t--;
1170 if (*ss == '\"' && t[-1] == '\"')
1171 {
1172 ss++;
1173 t--;
1174 }
1175 *t = 0;
1176
29f67888
HSHR
1177 /* We allow relative file names. For security reasons currently
1178 relative names not allowed with .include_if_exists. For .include_if_exists
1179 we need to check the permissions/ownership of the containing folder */
145396a6 1180 if (*ss != '/')
29f67888
HSHR
1181 if (include_if_exists) log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, ".include specifies a non-"
1182 "absolute path \"%s\"", ss);
1183 else
1184 {
1185 int offset = 0;
1186 int size = 0;
1187 ss = string_append(NULL, &size, &offset, 3, config_directory, "/", ss);
1188 ss[offset] = '\0'; /* string_append() does not zero terminate the string! */
1189 }
145396a6 1190
059ec3d9
PH
1191 if (include_if_exists != 0 && (Ustat(ss, &statbuf) != 0)) continue;
1192
bf3c2c6b
HSHR
1193 if (config_lines)
1194 save_config_position(config_filename, config_lineno);
059ec3d9
PH
1195 save = store_get(sizeof(config_file_item));
1196 save->next = config_file_stack;
1197 config_file_stack = save;
1198 save->file = config_file;
1199 save->filename = config_filename;
29f67888 1200 save->directory = config_directory;
059ec3d9
PH
1201 save->lineno = config_lineno;
1202
10c50704 1203 if (!(config_file = Ufopen(ss, "rb")))
059ec3d9
PH
1204 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "failed to open included "
1205 "configuration file %s", ss);
10c50704 1206
059ec3d9 1207 config_filename = string_copy(ss);
863bd541 1208 config_directory = string_copyn(ss, CUstrrchr(ss, '/') - ss);
059ec3d9
PH
1209 config_lineno = 0;
1210 continue;
1211 }
1212
1213 /* If this is the start of the logical line, remember where the non-blank
1214 data starts. Otherwise shuffle down continuation lines to remove leading
1215 white space. */
1216
1217 if (len == 0)
1218 startoffset = ss - big_buffer;
1219 else
1220 {
1221 s = big_buffer + len;
1222 if (ss > s)
1223 {
1224 memmove(s, ss, (newlen - len) - (ss - s) + 1);
1225 newlen -= ss - s;
1226 }
1227 }
1228
1229 /* Accept the new addition to the line. Remove trailing white space. */
1230
1231 len = newlen;
1232 while (len > 0 && isspace(big_buffer[len-1])) len--;
1233 big_buffer[len] = 0;
1234
1235 /* We are done if the line does not end in backslash and contains some data.
1236 Empty logical lines are ignored. For continuations, remove the backslash and
1237 go round the loop to read the continuation line. */
1238
1239 if (len > 0)
1240 {
1241 if (big_buffer[len-1] != '\\') break; /* End of logical line */
1242 big_buffer[--len] = 0; /* Remove backslash */
1243 }
1244 } /* Loop for reading multiple physical lines */
1245
1246/* We now have a logical line. Test for the end of a configuration section (or,
1247more accurately, for the start of the next section). Place the name of the next
1248section in next_section, and return NULL. If the name given is longer than
1249next_section, truncate it. It will be unrecognized later, because all the known
1250section names do fit. Leave space for pluralizing. */
1251
1252s = big_buffer + startoffset; /* First non-space character */
bf3c2c6b
HSHR
1253
1254if (config_lines)
1255 save_config_line(s);
1256
059ec3d9
PH
1257if (strncmpic(s, US"begin ", 6) == 0)
1258 {
1259 s += 6;
1260 while (isspace(*s)) s++;
1261 if (big_buffer + len - s > sizeof(next_section) - 2)
1262 s[sizeof(next_section) - 2] = 0;
1263 Ustrcpy(next_section, s);
1264 return NULL;
1265 }
1266
1267/* Return the first non-blank character. */
1268
1269return s;
1270}
1271
1272
1273
1274/*************************************************
1275* Read a name *
1276*************************************************/
1277
1278/* The yield is the pointer to the next uschar. Names longer than the
1279output space are silently truncated. This function is also used from acl.c when
1280parsing ACLs.
1281
1282Arguments:
1283 name where to put the name
1284 len length of name
1285 s input pointer
1286
1287Returns: new input pointer
1288*/
1289
1290uschar *
1291readconf_readname(uschar *name, int len, uschar *s)
1292{
1293int p = 0;
1294while (isspace(*s)) s++;
1295if (isalpha(*s))
1296 {
1297 while (isalnum(*s) || *s == '_')
1298 {
1299 if (p < len-1) name[p++] = *s;
1300 s++;
1301 }
1302 }
1303name[p] = 0;
1304while (isspace(*s)) s++;
1305return s;
1306}
1307
1308
1309
1310
1311/*************************************************
1312* Read a time value *
1313*************************************************/
1314
1315/* This function is also called from outside, to read argument
1316time values. The format of a time value is:
1317
1318 [<n>w][<n>d][<n>h][<n>m][<n>s]
1319
1320as long as at least one is present. If a format error is encountered,
1321return a negative value. The value must be terminated by the given
1322terminator.
1323
1324Arguments:
1325 s input pointer
1326 terminator required terminating character
1327 return_msec if TRUE, allow fractional seconds and return milliseconds
1328
1329Returns: the time value, or -1 on syntax error
1330 value is seconds if return_msec is FALSE
1331 value is milliseconds if return_msec is TRUE
1332*/
1333
1334int
1ad6489e 1335readconf_readtime(const uschar *s, int terminator, BOOL return_msec)
059ec3d9
PH
1336{
1337int yield = 0;
1338for (;;)
1339 {
1340 int value, count;
1341 double fraction;
1342
1343 if (!isdigit(*s)) return -1;
1ad6489e 1344 (void)sscanf(CCS s, "%d%n", &value, &count);
059ec3d9
PH
1345 s += count;
1346
1347 switch (*s)
1348 {
1349 case 'w': value *= 7;
1350 case 'd': value *= 24;
1351 case 'h': value *= 60;
1352 case 'm': value *= 60;
1353 case 's': s++;
1354 break;
1355
1356 case '.':
1357 if (!return_msec) return -1;
1ad6489e 1358 (void)sscanf(CCS s, "%lf%n", &fraction, &count);
059ec3d9
PH
1359 s += count;
1360 if (*s++ != 's') return -1;
1361 yield += (int)(fraction * 1000.0);
1362 break;
1363
1364 default: return -1;
1365 }
1366
1367 if (return_msec) value *= 1000;
1368 yield += value;
1369 if (*s == terminator) return yield;
1370 }
1371/* Control never reaches here. */
1372}
1373
1374
1375
1376/*************************************************
1377* Read a fixed point value *
1378*************************************************/
1379
1380/* The value is returned *1000
1381
1382Arguments:
1383 s input pointer
1384 terminator required terminator
1385
1386Returns: the value, or -1 on error
1387*/
1388
1389static int
55414b25 1390readconf_readfixed(const uschar *s, int terminator)
059ec3d9
PH
1391{
1392int yield = 0;
1393int value, count;
1394if (!isdigit(*s)) return -1;
1395(void)sscanf(CS s, "%d%n", &value, &count);
1396s += count;
1397yield = value * 1000;
1398if (*s == '.')
1399 {
1400 int m = 100;
1401 while (isdigit((*(++s))))
1402 {
1403 yield += (*s - '0') * m;
1404 m /= 10;
1405 }
1406 }
1407
1408return (*s == terminator)? yield : (-1);
1409}
1410
1411
1412
1413/*************************************************
1414* Find option in list *
1415*************************************************/
1416
1417/* The lists are always in order, so binary chop can be used.
1418
1419Arguments:
1420 name the option name to search for
1421 ol the first entry in the option list
1422 last one more than the offset of the last entry in the option list
1423
1424Returns: pointer to an option entry, or NULL if not found
1425*/
1426
1427static optionlist *
1428find_option(uschar *name, optionlist *ol, int last)
1429{
1430int first = 0;
1431while (last > first)
1432 {
1433 int middle = (first + last)/2;
1434 int c = Ustrcmp(name, ol[middle].name);
d7bed771 1435
059ec3d9 1436 if (c == 0) return ol + middle;
d7bed771
JH
1437 else if (c > 0) first = middle + 1;
1438 else last = middle;
059ec3d9
PH
1439 }
1440return NULL;
1441}
1442
1443
1444
1445/*************************************************
1446* Find a set flag in option list *
1447*************************************************/
1448
1449/* Because some versions of Unix make no restrictions on the values of uids and
1450gids (even negative ones), we cannot represent "unset" by a special value.
1451There is therefore a separate boolean variable for each one indicating whether
1452a value is set or not. This function returns a pointer to the boolean, given
1453the original option name. It is a major disaster if the flag cannot be found.
1454
1455Arguments:
1456 name the name of the uid or gid option
1457 oltop points to the start of the relevant option list
1458 last one more than the offset of the last item in the option list
1459 data_block NULL when reading main options => data values in the option
1460 list are absolute addresses; otherwise they are byte offsets
1461 in data_block (used for driver options)
1462
1463Returns: a pointer to the boolean flag.
1464*/
1465
1466static BOOL *
1467get_set_flag(uschar *name, optionlist *oltop, int last, void *data_block)
1468{
1469optionlist *ol;
1470uschar name2[64];
1471sprintf(CS name2, "*set_%.50s", name);
1472ol = find_option(name2, oltop, last);
1473if (ol == NULL) log_write(0, LOG_MAIN|LOG_PANIC_DIE,
1474 "Exim internal error: missing set flag for %s", name);
1475return (data_block == NULL)? (BOOL *)(ol->value) :
1476 (BOOL *)((uschar *)data_block + (long int)(ol->value));
1477}
1478
1479
1480
1481
1482/*************************************************
1483* Output extra characters message and die *
1484*************************************************/
1485
1486/* Called when an option line has junk on the end. Sometimes this is because
1487the sysadmin thinks comments are permitted.
1488
1489Arguments:
1490 s points to the extra characters
1491 t1..t3 strings to insert in the log message
1492
1493Returns: doesn't return; dies
1494*/
1495
1496static void
55414b25 1497extra_chars_error(const uschar *s, const uschar *t1, const uschar *t2, const uschar *t3)
059ec3d9
PH
1498{
1499uschar *comment = US"";
1500if (*s == '#') comment = US" (# is comment only at line start)";
1501log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1502 "extra characters follow %s%s%s%s", t1, t2, t3, comment);
1503}
1504
1505
1506
1507/*************************************************
1508* Read rewrite information *
1509*************************************************/
1510
1511/* Each line of rewrite information contains:
1512
1513. A complete address in the form user@domain, possibly with
1514 leading * for each part; or alternatively, a regex.
1515
1516. A replacement string (which will be expanded).
1517
1518. An optional sequence of one-letter flags, indicating which
1519 headers etc. to apply this rule to.
1520
1521All this is decoded and placed into a control block. The OR of the flags is
1522maintained in a common word.
1523
1524Arguments:
1525 p points to the string that makes up the rule
1526 existflags points to the overall flag word
1527 isglobal TRUE if reading global rewrite rules
1528
1529Returns: the control block for the parsed rule.
1530*/
1531
1532static rewrite_rule *
55414b25 1533readconf_one_rewrite(const uschar *p, int *existflags, BOOL isglobal)
059ec3d9
PH
1534{
1535rewrite_rule *next = store_get(sizeof(rewrite_rule));
1536
1537next->next = NULL;
1538next->key = string_dequote(&p);
1539
1540while (isspace(*p)) p++;
1541if (*p == 0)
1542 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1543 "missing rewrite replacement string");
1544
1545next->flags = 0;
1546next->replacement = string_dequote(&p);
1547
1548while (*p != 0) switch (*p++)
1549 {
1550 case ' ': case '\t': break;
1551
1552 case 'q': next->flags |= rewrite_quit; break;
1553 case 'w': next->flags |= rewrite_whole; break;
1554
1555 case 'h': next->flags |= rewrite_all_headers; break;
1556 case 's': next->flags |= rewrite_sender; break;
1557 case 'f': next->flags |= rewrite_from; break;
1558 case 't': next->flags |= rewrite_to; break;
1559 case 'c': next->flags |= rewrite_cc; break;
1560 case 'b': next->flags |= rewrite_bcc; break;
1561 case 'r': next->flags |= rewrite_replyto; break;
1562
1563 case 'E': next->flags |= rewrite_all_envelope; break;
1564 case 'F': next->flags |= rewrite_envfrom; break;
1565 case 'T': next->flags |= rewrite_envto; break;
1566
1567 case 'Q': next->flags |= rewrite_qualify; break;
1568 case 'R': next->flags |= rewrite_repeat; break;
1569
1570 case 'S':
1571 next->flags |= rewrite_smtp;
1572 if (next->key[0] != '^' && Ustrncmp(next->key, "\\N^", 3) != 0)
1573 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1574 "rewrite rule has the S flag but is not a regular expression");
1575 break;
1576
1577 default:
1578 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1579 "unknown rewrite flag character '%c' "
1580 "(could be missing quotes round replacement item)", p[-1]);
1581 break;
1582 }
1583
1584/* If no action flags are set, set all the "normal" rewrites. */
1585
1586if ((next->flags & (rewrite_all | rewrite_smtp)) == 0)
1587 next->flags |= isglobal? rewrite_all : rewrite_all_headers;
1588
1589/* Remember which exist, for optimization, and return the rule */
1590
1591*existflags |= next->flags;
1592return next;
1593}
1594
1595
1596
1597
1598/*************************************************
1599* Read global rewrite information *
1600*************************************************/
1601
1602/* Each line is a single rewrite rule; it is parsed into a control block
1603by readconf_one_rewrite(), and its flags are ORed into the global flag
1604word rewrite_existflags. */
1605
1606void
1607readconf_rewrites(void)
1608{
1609rewrite_rule **chain = &global_rewrite_rules;
1610uschar *p;
1611
1612while ((p = get_config_line()) != NULL)
1613 {
1614 rewrite_rule *next = readconf_one_rewrite(p, &rewrite_existflags, TRUE);
1615 *chain = next;
1616 chain = &(next->next);
1617 }
1618}
1619
1620
1621
1622/*************************************************
1623* Read a string *
1624*************************************************/
1625
1626/* Strings are read into the normal store pool. As long we aren't too
1627near the end of the current block, the string will just use what is necessary
1628on the top of the stacking pool, because string_cat() uses the extension
1629mechanism.
1630
1631Argument:
1632 s the rest of the input line
1633 name the option name (for errors)
1634
1635Returns: pointer to the string
1636*/
1637
1638static uschar *
55414b25 1639read_string(const uschar *s, const uschar *name)
059ec3d9
PH
1640{
1641uschar *yield;
55414b25 1642const uschar *ss;
059ec3d9
PH
1643
1644if (*s != '\"') return string_copy(s);
1645
1646ss = s;
1647yield = string_dequote(&s);
1648
1649if (s == ss+1 || s[-1] != '\"')
1650 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1651 "missing quote at end of string value for %s", name);
1652
1653if (*s != 0) extra_chars_error(s, US"string value for ", name, US"");
1654
1655return yield;
1656}
1657
1658
1659/*************************************************
1ad6489e
JH
1660* Custom-handler options *
1661*************************************************/
1662static void
1663fn_smtp_receive_timeout(const uschar * name, const uschar * str)
1664{
1ad6489e
JH
1665if (*str == '$')
1666 smtp_receive_timeout_s = string_copy(str);
1667else
1668 {
1669 /* "smtp_receive_timeout", opt_time, &smtp_receive_timeout */
1670 smtp_receive_timeout = readconf_readtime(str, 0, FALSE);
1671 if (smtp_receive_timeout < 0)
1672 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "invalid time value for %s",
1673 name);
1674 }
1675}
1676
1677/*************************************************
059ec3d9
PH
1678* Handle option line *
1679*************************************************/
1680
1681/* This function is called from several places to process a line containing the
1682setting of an option. The first argument is the line to be decoded; it has been
1683checked not to be empty and not to start with '#'. Trailing newlines and white
1684space have been removed. The second argument is a pointer to the list of
1685variable names that are to be recognized, together with their types and
1686locations, and the third argument gives the number of entries in the list.
1687
1688The fourth argument is a pointer to a data block. If it is NULL, then the data
1689values in the options list are absolute addresses. Otherwise, they are byte
1690offsets in the data block.
1691
1692String option data may continue onto several lines; this function reads further
1693data from config_file if necessary.
1694
1695The yield of this function is normally zero. If a string continues onto
1696multiple lines, then the data value is permitted to be followed by a comma
1697or a semicolon (for use in drivers) and the yield is that character.
1698
1699Arguments:
1700 buffer contains the configuration line to be handled
1701 oltop points to the start of the relevant option list
1702 last one more than the offset of the last item in the option list
1703 data_block NULL when reading main options => data values in the option
1704 list are absolute addresses; otherwise they are byte offsets
1705 in data_block when they have opt_public set; otherwise
1706 they are byte offsets in data_block->options_block.
1707 unknown_txt format string to use in panic message for unknown option;
1708 must contain %s for option name
1709 if given as NULL, don't panic on unknown option
1710
1711Returns: TRUE if an option was read successfully,
1712 FALSE false for an unknown option if unknown_txt == NULL,
1713 otherwise panic and die on an unknown option
1714*/
1715
1716static BOOL
1717readconf_handle_option(uschar *buffer, optionlist *oltop, int last,
1718 void *data_block, uschar *unknown_txt)
1719{
1720int ptr = 0;
1721int offset = 0;
1722int n, count, type, value;
1723int issecure = 0;
1724uid_t uid;
1725gid_t gid;
1726BOOL boolvalue = TRUE;
1727BOOL freesptr = TRUE;
1728optionlist *ol, *ol2;
1729struct passwd *pw;
1730void *reset_point;
1731int intbase = 0;
1732uschar *inttype = US"";
1733uschar *sptr;
1734uschar *s = buffer;
532be449 1735uschar **str_target;
059ec3d9
PH
1736uschar name[64];
1737uschar name2[64];
1738
1739/* There may be leading spaces; thereafter, we expect an option name starting
1740with a letter. */
1741
1742while (isspace(*s)) s++;
1743if (!isalpha(*s))
1744 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "option setting expected: %s", s);
1745
1746/* Read the name of the option, and skip any subsequent white space. If
1747it turns out that what we read was "hide", set the flag indicating that
1748this is a secure option, and loop to read the next word. */
1749
1750for (n = 0; n < 2; n++)
1751 {
1752 while (isalnum(*s) || *s == '_')
1753 {
1754 if (ptr < sizeof(name)-1) name[ptr++] = *s;
1755 s++;
1756 }
1757 name[ptr] = 0;
1758 while (isspace(*s)) s++;
1759 if (Ustrcmp(name, "hide") != 0) break;
1760 issecure = opt_secure;
1761 ptr = 0;
1762 }
1763
1764/* Deal with "no_" or "not_" here for booleans */
1765
1766if (Ustrncmp(name, "no_", 3) == 0)
1767 {
1768 boolvalue = FALSE;
1769 offset = 3;
1770 }
1771
1772if (Ustrncmp(name, "not_", 4) == 0)
1773 {
1774 boolvalue = FALSE;
1775 offset = 4;
1776 }
1777
1778/* Search the list for the given name. A non-existent name, or an option that
1779is set twice, is a disaster. */
1780
d7bed771 1781if (!(ol = find_option(name + offset, oltop, last)))
059ec3d9
PH
1782 {
1783 if (unknown_txt == NULL) return FALSE;
1784 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, CS unknown_txt, name);
1785 }
1786
846726c5
JH
1787if ((ol->type & opt_set) && !(ol->type & (opt_rep_con | opt_rep_str)))
1788 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1789 "\"%s\" option set for the second time", name);
059ec3d9
PH
1790
1791ol->type |= opt_set | issecure;
1792type = ol->type & opt_mask;
1793
1794/* Types with data values must be followed by '='; the "no[t]_" prefix
1795applies only to boolean values. */
1796
1797if (type < opt_bool || type > opt_bool_last)
1798 {
1799 if (offset != 0)
1800 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1801 "negation prefix applied to a non-boolean option");
1802 if (*s == 0)
1803 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1804 "unexpected end of line (data missing) after %s", name);
1805 if (*s != '=')
1806 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "missing \"=\" after %s", name);
1807 }
1808
1809/* If a boolean wasn't preceded by "no[t]_" it can be followed by = and
9c695f6d 1810true/false/yes/no, or, in the case of opt_expand_bool, a general string that
059ec3d9
PH
1811ultimately expands to one of those values. */
1812
1813else if (*s != 0 && (offset != 0 || *s != '='))
1814 extra_chars_error(s, US"boolean option ", name, US"");
1815
1816/* Skip white space after = */
1817
1818if (*s == '=') while (isspace((*(++s))));
1819
1820/* If there is a data block and the opt_public flag is not set, change
1821the data block pointer to the private options block. */
1822
1823if (data_block != NULL && (ol->type & opt_public) == 0)
1824 data_block = (void *)(((driver_instance *)data_block)->options_block);
1825
1826/* Now get the data according to the type. */
1827
1828switch (type)
1829 {
1830 /* If a string value is not enclosed in quotes, it consists of
1831 the rest of the current line, verbatim. Otherwise, string escapes
1832 are processed.
1833
1834 A transport is specified as a string, which is then looked up in the
1835 list of transports. A search type is specified as one of a number of
1836 known strings.
1837
1838 A set or rewrite rules for a driver is specified as a string, which is
1839 then parsed into a suitable chain of control blocks.
1840
1841 Uids and gids are specified as strings which are then looked up in the
1842 passwd file. Lists of uids and gids are similarly specified as colon-
1843 separated strings. */
1844
1845 case opt_stringptr:
1846 case opt_uid:
1847 case opt_gid:
1848 case opt_expand_uid:
1849 case opt_expand_gid:
1850 case opt_uidlist:
1851 case opt_gidlist:
1852 case opt_rewrite:
1853
1854 reset_point = sptr = read_string(s, name);
1855
1856 /* Having read a string, we now have several different ways of using it,
1857 depending on the data type, so do another switch. If keeping the actual
1858 string is not required (because it is interpreted), freesptr is set TRUE,
1859 and at the end we reset the pool. */
1860
1861 switch (type)
1862 {
1863 /* If this was a string, set the variable to point to the new string,
1864 and set the flag so its store isn't reclaimed. If it was a list of rewrite
1865 rules, we still keep the string (for printing), and parse the rules into a
1866 control block and flags word. */
1867
1868 case opt_stringptr:
adaa0e2c
JH
1869 str_target = data_block ? USS (US data_block + (long int)(ol->value))
1870 : USS (ol->value);
846726c5 1871 if (ol->type & opt_rep_con)
532be449 1872 {
adaa0e2c 1873 uschar * saved_condition;
6a8de854
PP
1874 /* We already have a condition, we're conducting a crude hack to let
1875 multiple condition rules be chained together, despite storing them in
1876 text form. */
adaa0e2c
JH
1877 *str_target = string_copy_malloc( (saved_condition = *str_target)
1878 ? string_sprintf("${if and{{bool_lax{%s}}{bool_lax{%s}}}}",
1879 saved_condition, sptr)
1880 : sptr);
846726c5
JH
1881 /* TODO(pdp): there is a memory leak here and just below
1882 when we set 3 or more conditions; I still don't
1883 understand the store mechanism enough to know
1884 what's the safe way to free content from an earlier store.
6a8de854
PP
1885 AFAICT, stores stack, so freeing an early stored item also stores
1886 all data alloc'd after it. If we knew conditions were adjacent,
1887 we could survive that, but we don't. So I *think* we need to take
1888 another bit from opt_type to indicate "malloced"; this seems like
1889 quite a hack, especially for this one case. It also means that
1890 we can't ever reclaim the store from the *first* condition.
1891
1892 Because we only do this once, near process start-up, I'm prepared to
1893 let this slide for the time being, even though it rankles. */
532be449 1894 }
76146973
JH
1895 else if (ol->type & opt_rep_str)
1896 {
2ad78978
JH
1897 uschar sep_o = Ustrncmp(name, "headers_add", 11)==0 ? '\n' : ':';
1898 int sep_i = -(int)sep_o;
55414b25 1899 const uschar * list = sptr;
2ad78978
JH
1900 uschar * s;
1901 uschar * list_o = *str_target;
1902
1903 while ((s = string_nextinlist(&list, &sep_i, NULL, 0)))
1904 list_o = string_append_listele(list_o, sep_o, s);
1905 if (list_o)
1906 *str_target = string_copy_malloc(list_o);
76146973 1907 }
532be449
PP
1908 else
1909 {
1910 *str_target = sptr;
1911 freesptr = FALSE;
1912 }
1913 break;
1914
059ec3d9 1915 case opt_rewrite:
adaa0e2c
JH
1916 if (data_block)
1917 *USS (US data_block + (long int)(ol->value)) = sptr;
059ec3d9 1918 else
adaa0e2c 1919 *USS (ol->value) = sptr;
059ec3d9
PH
1920 freesptr = FALSE;
1921 if (type == opt_rewrite)
1922 {
1923 int sep = 0;
1924 int *flagptr;
1925 uschar *p = sptr;
1926 rewrite_rule **chain;
1927 optionlist *ol3;
1928
1929 sprintf(CS name2, "*%.50s_rules", name);
1930 ol2 = find_option(name2, oltop, last);
1931 sprintf(CS name2, "*%.50s_flags", name);
1932 ol3 = find_option(name2, oltop, last);
1933
1934 if (ol2 == NULL || ol3 == NULL)
1935 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
1936 "rewrite rules not available for driver");
1937
1938 if (data_block == NULL)
1939 {
1940 chain = (rewrite_rule **)(ol2->value);
1941 flagptr = (int *)(ol3->value);
1942 }
1943 else
1944 {
1945 chain = (rewrite_rule **)((uschar *)data_block + (long int)(ol2->value));
1946 flagptr = (int *)((uschar *)data_block + (long int)(ol3->value));
1947 }
1948
55414b25 1949 while ((p = string_nextinlist(CUSS &sptr, &sep, big_buffer, BIG_BUFFER_SIZE)))
059ec3d9
PH
1950 {
1951 rewrite_rule *next = readconf_one_rewrite(p, flagptr, FALSE);
1952 *chain = next;
1953 chain = &(next->next);
1954 }
1955
1956 if ((*flagptr & (rewrite_all_envelope | rewrite_smtp)) != 0)
1957 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "rewrite rule specifies a "
1958 "non-header rewrite - not allowed at transport time -");
1959 }
1960 break;
1961
1962 /* If it was an expanded uid, see if there is any expansion to be
1963 done by checking for the presence of a $ character. If there is, save it
1964 in the corresponding *expand_user option field. Otherwise, fall through
1965 to treat it as a fixed uid. Ensure mutual exclusivity of the two kinds
1966 of data. */
1967
1968 case opt_expand_uid:
1969 sprintf(CS name2, "*expand_%.50s", name);
1970 ol2 = find_option(name2, oltop, last);
1971 if (ol2 != NULL)
1972 {
1973 uschar *ss = (Ustrchr(sptr, '$') != NULL)? sptr : NULL;
1974
1975 if (data_block == NULL)
1976 *((uschar **)(ol2->value)) = ss;
1977 else
1978 *((uschar **)((uschar *)data_block + (long int)(ol2->value))) = ss;
1979
1980 if (ss != NULL)
1981 {
1982 *(get_set_flag(name, oltop, last, data_block)) = FALSE;
1983 freesptr = FALSE;
1984 break;
1985 }
1986 }
1987
1988 /* Look up a fixed uid, and also make use of the corresponding gid
1989 if a passwd entry is returned and the gid has not been set. */
1990
1991 case opt_uid:
1992 if (!route_finduser(sptr, &pw, &uid))
1993 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "user %s was not found", sptr);
1994 if (data_block == NULL)
1995 *((uid_t *)(ol->value)) = uid;
1996 else
1997 *((uid_t *)((uschar *)data_block + (long int)(ol->value))) = uid;
1998
1999 /* Set the flag indicating a fixed value is set */
2000
2001 *(get_set_flag(name, oltop, last, data_block)) = TRUE;
2002
2003 /* Handle matching gid if we have a passwd entry: done by finding the
2004 same name with terminating "user" changed to "group"; if not found,
2005 ignore. Also ignore if the value is already set. */
2006
2007 if (pw == NULL) break;
2008 Ustrcpy(name+Ustrlen(name)-4, "group");
2009 ol2 = find_option(name, oltop, last);
2010 if (ol2 != NULL && ((ol2->type & opt_mask) == opt_gid ||
2011 (ol2->type & opt_mask) == opt_expand_gid))
2012 {
2013 BOOL *set_flag = get_set_flag(name, oltop, last, data_block);
2014 if (! *set_flag)
2015 {
2016 if (data_block == NULL)
2017 *((gid_t *)(ol2->value)) = pw->pw_gid;
2018 else
2019 *((gid_t *)((uschar *)data_block + (long int)(ol2->value))) = pw->pw_gid;
2020 *set_flag = TRUE;
2021 }
2022 }
2023 break;
2024
2025 /* If it was an expanded gid, see if there is any expansion to be
2026 done by checking for the presence of a $ character. If there is, save it
2027 in the corresponding *expand_user option field. Otherwise, fall through
2028 to treat it as a fixed gid. Ensure mutual exclusivity of the two kinds
2029 of data. */
2030
2031 case opt_expand_gid:
2032 sprintf(CS name2, "*expand_%.50s", name);
2033 ol2 = find_option(name2, oltop, last);
2034 if (ol2 != NULL)
2035 {
2036 uschar *ss = (Ustrchr(sptr, '$') != NULL)? sptr : NULL;
2037
2038 if (data_block == NULL)
2039 *((uschar **)(ol2->value)) = ss;
2040 else
2041 *((uschar **)((uschar *)data_block + (long int)(ol2->value))) = ss;
2042
2043 if (ss != NULL)
2044 {
2045 *(get_set_flag(name, oltop, last, data_block)) = FALSE;
2046 freesptr = FALSE;
2047 break;
2048 }
2049 }
2050
2051 /* Handle freestanding gid */
2052
2053 case opt_gid:
2054 if (!route_findgroup(sptr, &gid))
2055 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "group %s was not found", sptr);
2056 if (data_block == NULL)
2057 *((gid_t *)(ol->value)) = gid;
2058 else
2059 *((gid_t *)((uschar *)data_block + (long int)(ol->value))) = gid;
2060 *(get_set_flag(name, oltop, last, data_block)) = TRUE;
2061 break;
2062
2063 /* If it was a uid list, look up each individual entry, and build
2064 a vector of uids, with a count in the first element. Put the vector
2065 in malloc store so we can free the string. (We are reading into
2066 permanent store already.) */
2067
2068 case opt_uidlist:
2069 {
2070 int count = 1;
2071 uid_t *list;
2072 int ptr = 0;
55414b25
JH
2073 const uschar *p;
2074 const uschar *op = expand_string (sptr);
0925ede6
PH
2075
2076 if (op == NULL)
2077 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "failed to expand %s: %s",
2078 name, expand_string_message);
059ec3d9 2079
0925ede6 2080 p = op;
059ec3d9 2081 if (*p != 0) count++;
0925ede6 2082 while (*p != 0) if (*p++ == ':' && *p != 0) count++;
059ec3d9
PH
2083 list = store_malloc(count*sizeof(uid_t));
2084 list[ptr++] = (uid_t)(count - 1);
2085
2086 if (data_block == NULL)
2087 *((uid_t **)(ol->value)) = list;
2088 else
2089 *((uid_t **)((uschar *)data_block + (long int)(ol->value))) = list;
2090
0925ede6 2091 p = op;
059ec3d9
PH
2092 while (count-- > 1)
2093 {
2094 int sep = 0;
2095 (void)string_nextinlist(&p, &sep, big_buffer, BIG_BUFFER_SIZE);
2096 if (!route_finduser(big_buffer, NULL, &uid))
2097 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "user %s was not found",
2098 big_buffer);
2099 list[ptr++] = uid;
2100 }
2101 }
2102 break;
2103
2104 /* If it was a gid list, look up each individual entry, and build
2105 a vector of gids, with a count in the first element. Put the vector
2106 in malloc store so we can free the string. (We are reading into permanent
2107 store already.) */
2108
2109 case opt_gidlist:
2110 {
2111 int count = 1;
2112 gid_t *list;
2113 int ptr = 0;
55414b25
JH
2114 const uschar *p;
2115 const uschar *op = expand_string (sptr);
0925ede6
PH
2116
2117 if (op == NULL)
2118 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "failed to expand %s: %s",
2119 name, expand_string_message);
059ec3d9 2120
0925ede6 2121 p = op;
059ec3d9 2122 if (*p != 0) count++;
0925ede6 2123 while (*p != 0) if (*p++ == ':' && *p != 0) count++;
059ec3d9
PH
2124 list = store_malloc(count*sizeof(gid_t));
2125 list[ptr++] = (gid_t)(count - 1);
2126
2127 if (data_block == NULL)
2128 *((gid_t **)(ol->value)) = list;
2129 else
2130 *((gid_t **)((uschar *)data_block + (long int)(ol->value))) = list;
2131
0925ede6 2132 p = op;
059ec3d9
PH
2133 while (count-- > 1)
2134 {
2135 int sep = 0;
2136 (void)string_nextinlist(&p, &sep, big_buffer, BIG_BUFFER_SIZE);
2137 if (!route_findgroup(big_buffer, &gid))
2138 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "group %s was not found",
2139 big_buffer);
2140 list[ptr++] = gid;
2141 }
2142 }
2143 break;
2144 }
2145
2146 /* Release store if the value of the string doesn't need to be kept. */
2147
2148 if (freesptr) store_reset(reset_point);
2149 break;
2150
2151 /* Expanded boolean: if no characters follow, or if there are no dollar
2152 characters, this is a fixed-valued boolean, and we fall through. Otherwise,
2153 save the string for later expansion in the alternate place. */
2154
2155 case opt_expand_bool:
2156 if (*s != 0 && Ustrchr(s, '$') != 0)
2157 {
2158 sprintf(CS name2, "*expand_%.50s", name);
2159 ol2 = find_option(name2, oltop, last);
2160 if (ol2 != NULL)
2161 {
2162 reset_point = sptr = read_string(s, name);
2163 if (data_block == NULL)
2164 *((uschar **)(ol2->value)) = sptr;
2165 else
2166 *((uschar **)((uschar *)data_block + (long int)(ol2->value))) = sptr;
2167 freesptr = FALSE;
2168 break;
2169 }
2170 }
2171 /* Fall through */
2172
2173 /* Boolean: if no characters follow, the value is boolvalue. Otherwise
2174 look for yes/not/true/false. Some booleans are stored in a single bit in
2175 a single int. There's a special fudge for verify settings; without a suffix
2176 they set both xx_sender and xx_recipient. The table points to the sender
2177 value; search subsequently for the recipient. There's another special case:
2178 opt_bool_set also notes when a boolean has been set. */
2179
2180 case opt_bool:
2181 case opt_bit:
2182 case opt_bool_verify:
2183 case opt_bool_set:
2184 if (*s != 0)
2185 {
2186 s = readconf_readname(name2, 64, s);
2187 if (strcmpic(name2, US"true") == 0 || strcmpic(name2, US"yes") == 0)
2188 boolvalue = TRUE;
2189 else if (strcmpic(name2, US"false") == 0 || strcmpic(name2, US"no") == 0)
2190 boolvalue = FALSE;
2191 else log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
2192 "\"%s\" is not a valid value for the \"%s\" option", name2, name);
2193 if (*s != 0) extra_chars_error(s, string_sprintf("\"%s\" ", name2),
2194 US"for boolean option ", name);
2195 }
2196
2197 /* Handle single-bit type. */
2198
2199 if (type == opt_bit)
2200 {
2201 int bit = 1 << ((ol->type >> 16) & 31);
2202 int *ptr = (data_block == NULL)?
2203 (int *)(ol->value) :
2204 (int *)((uschar *)data_block + (long int)ol->value);
2205 if (boolvalue) *ptr |= bit; else *ptr &= ~bit;
2206 break;
2207 }
2208
2209 /* Handle full BOOL types */
2210
2211 if (data_block == NULL)
2212 *((BOOL *)(ol->value)) = boolvalue;
2213 else
2214 *((BOOL *)((uschar *)data_block + (long int)(ol->value))) = boolvalue;
2215
2216 /* Verify fudge */
2217
2218 if (type == opt_bool_verify)
2219 {
2220 sprintf(CS name2, "%.50s_recipient", name + offset);
2221 ol2 = find_option(name2, oltop, last);
2222 if (ol2 != NULL)
2223 {
2224 if (data_block == NULL)
2225 *((BOOL *)(ol2->value)) = boolvalue;
2226 else
2227 *((BOOL *)((uschar *)data_block + (long int)(ol2->value))) = boolvalue;
2228 }
2229 }
2230
2231 /* Note that opt_bool_set type is set, if there is somewhere to do so */
2232
2233 else if (type == opt_bool_set)
2234 {
2235 sprintf(CS name2, "*set_%.50s", name + offset);
2236 ol2 = find_option(name2, oltop, last);
2237 if (ol2 != NULL)
2238 {
2239 if (data_block == NULL)
2240 *((BOOL *)(ol2->value)) = TRUE;
2241 else
2242 *((BOOL *)((uschar *)data_block + (long int)(ol2->value))) = TRUE;
2243 }
2244 }
2245 break;
2246
2247 /* Octal integer */
2248
2249 case opt_octint:
2250 intbase = 8;
2251 inttype = US"octal ";
2252
2253 /* Integer: a simple(ish) case; allow octal and hex formats, and
dcb72db9 2254 suffixes K, M and G. The different types affect output, not input. */
059ec3d9
PH
2255
2256 case opt_mkint:
2257 case opt_int:
2258 {
2259 uschar *endptr;
7e8d92ba
PH
2260 long int lvalue;
2261
059ec3d9 2262 errno = 0;
7e8d92ba 2263 lvalue = strtol(CS s, CSS &endptr, intbase);
059ec3d9
PH
2264
2265 if (endptr == s)
2266 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "%sinteger expected for %s",
2267 inttype, name);
2268
2269 if (errno != ERANGE)
059ec3d9
PH
2270 if (tolower(*endptr) == 'k')
2271 {
7e8d92ba
PH
2272 if (lvalue > INT_MAX/1024 || lvalue < INT_MIN/1024) errno = ERANGE;
2273 else lvalue *= 1024;
059ec3d9
PH
2274 endptr++;
2275 }
2276 else if (tolower(*endptr) == 'm')
2277 {
7e8d92ba 2278 if (lvalue > INT_MAX/(1024*1024) || lvalue < INT_MIN/(1024*1024))
059ec3d9 2279 errno = ERANGE;
7e8d92ba 2280 else lvalue *= 1024*1024;
059ec3d9
PH
2281 endptr++;
2282 }
dcb72db9
JH
2283 else if (tolower(*endptr) == 'g')
2284 {
2285 if (lvalue > INT_MAX/(1024*1024*1024) || lvalue < INT_MIN/(1024*1024*1024))
2286 errno = ERANGE;
2287 else lvalue *= 1024*1024*1024;
2288 endptr++;
2289 }
059ec3d9 2290
7e8d92ba
PH
2291 if (errno == ERANGE || lvalue > INT_MAX || lvalue < INT_MIN)
2292 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
2293 "absolute value of integer \"%s\" is too large (overflow)", s);
059ec3d9
PH
2294
2295 while (isspace(*endptr)) endptr++;
2296 if (*endptr != 0)
2297 extra_chars_error(endptr, inttype, US"integer value for ", name);
7e8d92ba
PH
2298
2299 value = (int)lvalue;
059ec3d9
PH
2300 }
2301
2302 if (data_block == NULL)
2303 *((int *)(ol->value)) = value;
2304 else
2305 *((int *)((uschar *)data_block + (long int)(ol->value))) = value;
2306 break;
2307
dcb72db9
JH
2308 /* Integer held in K: again, allow octal and hex formats, and suffixes K, M
2309 and G. */
13559da6 2310 /*XXX consider moving to int_eximarith_t (but mind the overflow test 0415) */
059ec3d9
PH
2311
2312 case opt_Kint:
2313 {
2314 uschar *endptr;
2315 errno = 0;
2316 value = strtol(CS s, CSS &endptr, intbase);
2317
2318 if (endptr == s)
2319 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "%sinteger expected for %s",
2320 inttype, name);
2321
2322 if (errno != ERANGE)
dcb72db9 2323 if (tolower(*endptr) == 'g')
059ec3d9 2324 {
dcb72db9
JH
2325 if (value > INT_MAX/(1024*1024) || value < INT_MIN/(1024*1024))
2326 errno = ERANGE;
2327 else
2328 value *= 1024*1024;
059ec3d9
PH
2329 endptr++;
2330 }
dcb72db9 2331 else if (tolower(*endptr) == 'm')
059ec3d9 2332 {
dcb72db9
JH
2333 if (value > INT_MAX/1024 || value < INT_MIN/1024)
2334 errno = ERANGE;
2335 else
2336 value *= 1024;
059ec3d9
PH
2337 endptr++;
2338 }
dcb72db9
JH
2339 else if (tolower(*endptr) == 'k')
2340 endptr++;
059ec3d9 2341 else
059ec3d9 2342 value = (value + 512)/1024;
059ec3d9
PH
2343
2344 if (errno == ERANGE) log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
2345 "absolute value of integer \"%s\" is too large (overflow)", s);
2346
2347 while (isspace(*endptr)) endptr++;
2348 if (*endptr != 0)
2349 extra_chars_error(endptr, inttype, US"integer value for ", name);
2350 }
2351
2352 if (data_block == NULL)
2353 *((int *)(ol->value)) = value;
2354 else
2355 *((int *)((uschar *)data_block + (long int)(ol->value))) = value;
2356 break;
2357
2358 /* Fixed-point number: held to 3 decimal places. */
2359
2360 case opt_fixed:
2361 if (sscanf(CS s, "%d%n", &value, &count) != 1)
2362 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
2363 "fixed-point number expected for %s", name);
2364
2365 if (value < 0) log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
2366 "integer \"%s\" is too large (overflow)", s);
2367
2368 value *= 1000;
2369
2370 if (value < 0) log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
2371 "integer \"%s\" is too large (overflow)", s);
2372
76ac1b5b
JH
2373 /* We get a coverity error here for using count, as it derived
2374 from the tainted buffer pointed to by s, as parsed by sscanf().
4c04137d 2375 By the definition of sscanf we must be accessing between start
76ac1b5b
JH
2376 and end of s (assuming it is nul-terminated...) so ignore the error. */
2377 /* coverity[tainted_data] */
059ec3d9
PH
2378 if (s[count] == '.')
2379 {
2380 int d = 100;
2381 while (isdigit(s[++count]))
2382 {
2383 value += (s[count] - '0') * d;
2384 d /= 10;
2385 }
2386 }
2387
2388 while (isspace(s[count])) count++;
2389
2390 if (s[count] != 0)
2391 extra_chars_error(s+count, US"fixed-point value for ", name, US"");
2392
2393 if (data_block == NULL)
2394 *((int *)(ol->value)) = value;
2395 else
2396 *((int *)((uschar *)data_block + (long int)(ol->value))) = value;
2397 break;
2398
2399 /* There's a special routine to read time values. */
2400
2401 case opt_time:
2402 value = readconf_readtime(s, 0, FALSE);
2403 if (value < 0)
2404 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "invalid time value for %s",
2405 name);
2406 if (data_block == NULL)
2407 *((int *)(ol->value)) = value;
2408 else
2409 *((int *)((uschar *)data_block + (long int)(ol->value))) = value;
2410 break;
2411
2412 /* A time list is a list of colon-separated times, with the first
2413 element holding the size of the list and the second the number of
2414 entries used. */
2415
2416 case opt_timelist:
2417 {
2418 int count = 0;
2419 int *list = (data_block == NULL)?
2420 (int *)(ol->value) :
2421 (int *)((uschar *)data_block + (long int)(ol->value));
2422
2423 if (*s != 0) for (count = 1; count <= list[0] - 2; count++)
2424 {
2425 int terminator = 0;
2426 uschar *snext = Ustrchr(s, ':');
2427 if (snext != NULL)
2428 {
2429 uschar *ss = snext;
2430 while (ss > s && isspace(ss[-1])) ss--;
2431 terminator = *ss;
2432 }
2433 value = readconf_readtime(s, terminator, FALSE);
2434 if (value < 0)
2435 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "invalid time value for %s",
2436 name);
2437 if (count > 1 && value <= list[count])
2438 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
2439 "time value out of order for %s", name);
2440 list[count+1] = value;
2441 if (snext == NULL) break;
2442 s = snext + 1;
2443 while (isspace(*s)) s++;
2444 }
2445
2446 if (count > list[0] - 2)
2447 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "too many time values for %s",
2448 name);
2449 if (count > 0 && list[2] == 0) count = 0;
2450 list[1] = count;
1ad6489e 2451 break;
059ec3d9
PH
2452 }
2453
1ad6489e
JH
2454 case opt_func:
2455 {
2456 void (*fn)() = ol->value;
2457 fn(name, s);
2458 break;
2459 }
059ec3d9
PH
2460 }
2461
2462return TRUE;
2463}
2464
2465
2466
2467/*************************************************
2468* Print a time value *
2469*************************************************/
2470
2471/*
2472Argument: a time value in seconds
2473Returns: pointer to a fixed buffer containing the time as a string,
2474 in readconf_readtime() format
2475*/
2476
2477uschar *
2478readconf_printtime(int t)
2479{
2480int s, m, h, d, w;
2481uschar *p = time_buffer;
2482
ea49d0e1
PH
2483if (t < 0)
2484 {
2485 *p++ = '-';
2486 t = -t;
2487 }
2488
059ec3d9
PH
2489s = t % 60;
2490t /= 60;
2491m = t % 60;
2492t /= 60;
2493h = t % 24;
2494t /= 24;
2495d = t % 7;
2496w = t/7;
2497
2498if (w > 0) { sprintf(CS p, "%dw", w); while (*p) p++; }
2499if (d > 0) { sprintf(CS p, "%dd", d); while (*p) p++; }
2500if (h > 0) { sprintf(CS p, "%dh", h); while (*p) p++; }
2501if (m > 0) { sprintf(CS p, "%dm", m); while (*p) p++; }
2502if (s > 0 || p == time_buffer) sprintf(CS p, "%ds", s);
2503
2504return time_buffer;
2505}
2506
2507
2508
2509/*************************************************
2510* Print an individual option value *
2511*************************************************/
2512
2513/* This is used by the -bP option, so prints to the standard output.
2514The entire options list is passed in as an argument, because some options come
2515in pairs - typically uid/gid settings, which can either be explicit numerical
2516values, or strings to be expanded later. If the numerical value is unset,
2517search for "*expand_<name>" to see if there is a string equivalent.
2518
2519Arguments:
2520 ol option entry, or NULL for an unknown option
2521 name option name
2522 options_block NULL for main configuration options; otherwise points to
2523 a driver block; if the option doesn't have opt_public
2524 set, then options_block->options_block is where the item
2525 resides.
2526 oltop points to the option list in which ol exists
2527 last one more than the offset of the last entry in optop
12f69989 2528 no_labels do not show "foo = " at the start.
059ec3d9
PH
2529
2530Returns: nothing
2531*/
2532
2533static void
2534print_ol(optionlist *ol, uschar *name, void *options_block,
12f69989 2535 optionlist *oltop, int last, BOOL no_labels)
059ec3d9
PH
2536{
2537struct passwd *pw;
2538struct group *gr;
2539optionlist *ol2;
2540void *value;
2541uid_t *uidlist;
2542gid_t *gidlist;
2543uschar *s;
2544uschar name2[64];
2545
2546if (ol == NULL)
2547 {
2548 printf("%s is not a known option\n", name);
2549 return;
2550 }
2551
2552/* Non-admin callers cannot see options that have been flagged secure by the
2553"hide" prefix. */
2554
2555if (!admin_user && (ol->type & opt_secure) != 0)
2556 {
12f69989
PP
2557 if (no_labels)
2558 printf("%s\n", hidden);
2559 else
2560 printf("%s = %s\n", name, hidden);
059ec3d9
PH
2561 return;
2562 }
2563
2564/* Else show the value of the option */
2565
2566value = ol->value;
2567if (options_block != NULL)
2568 {
2569 if ((ol->type & opt_public) == 0)
2570 options_block = (void *)(((driver_instance *)options_block)->options_block);
2571 value = (void *)((uschar *)options_block + (long int)value);
2572 }
2573
2574switch(ol->type & opt_mask)
2575 {
2576 case opt_stringptr:
2577 case opt_rewrite: /* Show the text value */
2578 s = *((uschar **)value);
12f69989
PP
2579 if (!no_labels) printf("%s = ", name);
2580 printf("%s\n", (s == NULL)? US"" : string_printing2(s, FALSE));
059ec3d9
PH
2581 break;
2582
2583 case opt_int:
12f69989
PP
2584 if (!no_labels) printf("%s = ", name);
2585 printf("%d\n", *((int *)value));
059ec3d9
PH
2586 break;
2587
2588 case opt_mkint:
2589 {
2590 int x = *((int *)value);
2591 if (x != 0 && (x & 1023) == 0)
2592 {
2593 int c = 'K';
2594 x >>= 10;
2595 if ((x & 1023) == 0)
2596 {
2597 c = 'M';
2598 x >>= 10;
2599 }
12f69989
PP
2600 if (!no_labels) printf("%s = ", name);
2601 printf("%d%c\n", x, c);
2602 }
2603 else
2604 {
2605 if (!no_labels) printf("%s = ", name);
2606 printf("%d\n", x);
059ec3d9 2607 }
059ec3d9
PH
2608 }
2609 break;
2610
2611 case opt_Kint:
2612 {
2613 int x = *((int *)value);
12f69989
PP
2614 if (!no_labels) printf("%s = ", name);
2615 if (x == 0) printf("0\n");
2616 else if ((x & 1023) == 0) printf("%dM\n", x >> 10);
2617 else printf("%dK\n", x);
059ec3d9
PH
2618 }
2619 break;
2620
2621 case opt_octint:
12f69989
PP
2622 if (!no_labels) printf("%s = ", name);
2623 printf("%#o\n", *((int *)value));
059ec3d9
PH
2624 break;
2625
2626 /* Can be negative only when "unset", in which case integer */
2627
2628 case opt_fixed:
2629 {
2630 int x = *((int *)value);
2631 int f = x % 1000;
2632 int d = 100;
2633 if (x < 0) printf("%s =\n", name); else
2634 {
12f69989
PP
2635 if (!no_labels) printf("%s = ", name);
2636 printf("%d.", x/1000);
059ec3d9
PH
2637 do
2638 {
2639 printf("%d", f/d);
2640 f %= d;
2641 d /= 10;
2642 }
2643 while (f != 0);
2644 printf("\n");
2645 }
2646 }
2647 break;
2648
2649 /* If the numerical value is unset, try for the string value */
2650
2651 case opt_expand_uid:
2652 if (! *get_set_flag(name, oltop, last, options_block))
2653 {
2654 sprintf(CS name2, "*expand_%.50s", name);
2655 ol2 = find_option(name2, oltop, last);
2656 if (ol2 != NULL)
2657 {
2658 void *value2 = ol2->value;
2659 if (options_block != NULL)
2660 value2 = (void *)((uschar *)options_block + (long int)value2);
2661 s = *((uschar **)value2);
12f69989
PP
2662 if (!no_labels) printf("%s = ", name);
2663 printf("%s\n", (s == NULL)? US"" : string_printing(s));
059ec3d9
PH
2664 break;
2665 }
2666 }
2667
2668 /* Else fall through */
2669
2670 case opt_uid:
12f69989 2671 if (!no_labels) printf("%s = ", name);
059ec3d9 2672 if (! *get_set_flag(name, oltop, last, options_block))
12f69989 2673 printf("\n");
059ec3d9
PH
2674 else
2675 {
2676 pw = getpwuid(*((uid_t *)value));
2677 if (pw == NULL)
12f69989
PP
2678 printf("%ld\n", (long int)(*((uid_t *)value)));
2679 else printf("%s\n", pw->pw_name);
059ec3d9
PH
2680 }
2681 break;
2682
2683 /* If the numerical value is unset, try for the string value */
2684
2685 case opt_expand_gid:
2686 if (! *get_set_flag(name, oltop, last, options_block))
2687 {
2688 sprintf(CS name2, "*expand_%.50s", name);
2689 ol2 = find_option(name2, oltop, last);
2690 if (ol2 != NULL && (ol2->type & opt_mask) == opt_stringptr)
2691 {
2692 void *value2 = ol2->value;
2693 if (options_block != NULL)
2694 value2 = (void *)((uschar *)options_block + (long int)value2);
2695 s = *((uschar **)value2);
12f69989
PP
2696 if (!no_labels) printf("%s = ", name);
2697 printf("%s\n", (s == NULL)? US"" : string_printing(s));
059ec3d9
PH
2698 break;
2699 }
2700 }
2701
2702 /* Else fall through */
2703
2704 case opt_gid:
12f69989 2705 if (!no_labels) printf("%s = ", name);
059ec3d9 2706 if (! *get_set_flag(name, oltop, last, options_block))
12f69989 2707 printf("\n");
059ec3d9
PH
2708 else
2709 {
2710 gr = getgrgid(*((int *)value));
2711 if (gr == NULL)
12f69989
PP
2712 printf("%ld\n", (long int)(*((int *)value)));
2713 else printf("%s\n", gr->gr_name);
059ec3d9
PH
2714 }
2715 break;
2716
2717 case opt_uidlist:
2718 uidlist = *((uid_t **)value);
12f69989 2719 if (!no_labels) printf("%s =", name);
059ec3d9
PH
2720 if (uidlist != NULL)
2721 {
2722 int i;
2723 uschar sep = ' ';
12f69989 2724 if (no_labels) sep = '\0';
059ec3d9
PH
2725 for (i = 1; i <= (int)(uidlist[0]); i++)
2726 {
2727 uschar *name = NULL;
2728 pw = getpwuid(uidlist[i]);
2729 if (pw != NULL) name = US pw->pw_name;
12f69989
PP
2730 if (sep != '\0') printf("%c", sep);
2731 if (name != NULL) printf("%s", name);
2732 else printf("%ld", (long int)(uidlist[i]));
059ec3d9
PH
2733 sep = ':';
2734 }
2735 }
2736 printf("\n");
2737 break;
2738
2739 case opt_gidlist:
2740 gidlist = *((gid_t **)value);
12f69989 2741 if (!no_labels) printf("%s =", name);
059ec3d9
PH
2742 if (gidlist != NULL)
2743 {
2744 int i;
2745 uschar sep = ' ';
12f69989 2746 if (no_labels) sep = '\0';
059ec3d9
PH
2747 for (i = 1; i <= (int)(gidlist[0]); i++)
2748 {
2749 uschar *name = NULL;
2750 gr = getgrgid(gidlist[i]);
2751 if (gr != NULL) name = US gr->gr_name;
12f69989
PP
2752 if (sep != '\0') printf("%c", sep);
2753 if (name != NULL) printf("%s", name);
2754 else printf("%ld", (long int)(gidlist[i]));
059ec3d9
PH
2755 sep = ':';
2756 }
2757 }
2758 printf("\n");
2759 break;
2760
2761 case opt_time:
12f69989
PP
2762 if (!no_labels) printf("%s = ", name);
2763 printf("%s\n", readconf_printtime(*((int *)value)));
059ec3d9
PH
2764 break;
2765
2766 case opt_timelist:
2767 {
2768 int i;
2769 int *list = (int *)value;
12f69989 2770 if (!no_labels) printf("%s = ", name);
059ec3d9
PH
2771 for (i = 0; i < list[1]; i++)
2772 printf("%s%s", (i == 0)? "" : ":", readconf_printtime(list[i+2]));
2773 printf("\n");
2774 }
2775 break;
2776
2777 case opt_bit:
2778 printf("%s%s\n", ((*((int *)value)) & (1 << ((ol->type >> 16) & 31)))?
2779 "" : "no_", name);
2780 break;
2781
2782 case opt_expand_bool:
2783 sprintf(CS name2, "*expand_%.50s", name);
2784 ol2 = find_option(name2, oltop, last);
2785 if (ol2 != NULL && ol2->value != NULL)
2786 {
2787 void *value2 = ol2->value;
2788 if (options_block != NULL)
2789 value2 = (void *)((uschar *)options_block + (long int)value2);
2790 s = *((uschar **)value2);
2791 if (s != NULL)
2792 {
12f69989
PP
2793 if (!no_labels) printf("%s = ", name);
2794 printf("%s\n", string_printing(s));
059ec3d9
PH
2795 break;
2796 }
2797 /* s == NULL => string not set; fall through */
2798 }
2799
2800 /* Fall through */
2801
2802 case opt_bool:
2803 case opt_bool_verify:
2804 case opt_bool_set:
2805 printf("%s%s\n", (*((BOOL *)value))? "" : "no_", name);
2806 break;
2807 }
2808}
2809
2810
2811
2812/*************************************************
2813* Print value from main configuration *
2814*************************************************/
2815
2816/* This function, called as a result of encountering the -bP option,
2817causes the value of any main configuration variable to be output if the
2818second argument is NULL. There are some special values:
2819
2820 all print all main configuration options
44f6c01d
HSHR
2821 config_file print the name of the configuration file
2822 (configure_file will still work, for backward
2823 compatibility)
059ec3d9
PH
2824 routers print the routers' configurations
2825 transports print the transports' configuration
2826 authenticators print the authenticators' configuration
5d9c27ec 2827 macros print the macros' configuration
059ec3d9
PH
2828 router_list print a list of router names
2829 transport_list print a list of transport names
2830 authenticator_list print a list of authentication mechanism names
5d9c27ec 2831 macro_list print a list of macro names
059ec3d9
PH
2832 +name print a named list item
2833 local_scan print the local_scan options
bf3c2c6b 2834 config print the configuration as it is parsed
bc3c7bb7 2835 environment print the used execution environment
059ec3d9 2836
5d9c27ec
TK
2837If the second argument is not NULL, it must be one of "router", "transport",
2838"authenticator" or "macro" in which case the first argument identifies the
2839driver whose options are to be printed.
059ec3d9
PH
2840
2841Arguments:
2842 name option name if type == NULL; else driver name
2843 type NULL or driver type name, as described above
12f69989 2844 no_labels avoid the "foo = " at the start of an item
059ec3d9
PH
2845
2846Returns: nothing
2847*/
2848
2849void
12f69989 2850readconf_print(uschar *name, uschar *type, BOOL no_labels)
059ec3d9
PH
2851{
2852BOOL names_only = FALSE;
2853optionlist *ol;
2854optionlist *ol2 = NULL;
2855driver_instance *d = NULL;
5d9c27ec 2856macro_item *m;
059ec3d9
PH
2857int size = 0;
2858
2859if (type == NULL)
2860 {
2861 if (*name == '+')
2862 {
2863 int i;
2864 tree_node *t;
2865 BOOL found = FALSE;
2866 static uschar *types[] = { US"address", US"domain", US"host",
2867 US"localpart" };
2868 static tree_node **anchors[] = { &addresslist_anchor, &domainlist_anchor,
2869 &hostlist_anchor, &localpartlist_anchor };
2870
2871 for (i = 0; i < 4; i++)
2872 {
2873 t = tree_search(*(anchors[i]), name+1);
2874 if (t != NULL)
2875 {
2876 found = TRUE;
12f69989
PP
2877 if (no_labels)
2878 printf("%s\n", ((namedlist_block *)(t->data.ptr))->string);
2879 else
2880 printf("%slist %s = %s\n", types[i], name+1,
2881 ((namedlist_block *)(t->data.ptr))->string);
059ec3d9
PH
2882 }
2883 }
2884
2885 if (!found)
2886 printf("no address, domain, host, or local part list called \"%s\" "
2887 "exists\n", name+1);
2888
2889 return;
2890 }
2891
d7bed771
JH
2892 if ( Ustrcmp(name, "configure_file") == 0
2893 || Ustrcmp(name, "config_file") == 0)
059ec3d9
PH
2894 {
2895 printf("%s\n", CS config_main_filename);
2896 return;
2897 }
2898
2899 if (Ustrcmp(name, "all") == 0)
2900 {
2901 for (ol = optionlist_config;
c0b9d3e8 2902 ol < optionlist_config + nelem(optionlist_config); ol++)
059ec3d9
PH
2903 {
2904 if ((ol->type & opt_hidden) == 0)
12f69989 2905 print_ol(ol, US ol->name, NULL,
c0b9d3e8 2906 optionlist_config, nelem(optionlist_config),
12f69989 2907 no_labels);
059ec3d9
PH
2908 }
2909 return;
2910 }
2911
2912 if (Ustrcmp(name, "local_scan") == 0)
2913 {
2914 #ifndef LOCAL_SCAN_HAS_OPTIONS
2915 printf("local_scan() options are not supported\n");
2916 #else
2917 for (ol = local_scan_options;
2918 ol < local_scan_options + local_scan_options_count; ol++)
2919 {
2920 print_ol(ol, US ol->name, NULL, local_scan_options,
12f69989 2921 local_scan_options_count, no_labels);
059ec3d9
PH
2922 }
2923 #endif
2924 return;
2925 }
2926
bf3c2c6b
HSHR
2927 if (Ustrcmp(name, "config") == 0)
2928 {
3257ed4b 2929 print_config(admin_user, no_labels);
bf3c2c6b
HSHR
2930 return;
2931 }
2932
059ec3d9
PH
2933 if (Ustrcmp(name, "routers") == 0)
2934 {
2935 type = US"router";
2936 name = NULL;
2937 }
2938 else if (Ustrcmp(name, "transports") == 0)
2939 {
2940 type = US"transport";
2941 name = NULL;
2942 }
2943
2944 else if (Ustrcmp(name, "authenticators") == 0)
2945 {
2946 type = US"authenticator";
2947 name = NULL;
2948 }
2949
5d9c27ec 2950 else if (Ustrcmp(name, "macros") == 0)
059ec3d9 2951 {
5d9c27ec 2952 type = US"macro";
059ec3d9 2953 name = NULL;
059ec3d9
PH
2954 }
2955
2956 else if (Ustrcmp(name, "router_list") == 0)
2957 {
2958 type = US"router";
2959 name = NULL;
2960 names_only = TRUE;
2961 }
5d9c27ec 2962
059ec3d9
PH
2963 else if (Ustrcmp(name, "transport_list") == 0)
2964 {
2965 type = US"transport";
2966 name = NULL;
2967 names_only = TRUE;
2968 }
5d9c27ec
TK
2969
2970 else if (Ustrcmp(name, "authenticator_list") == 0)
2971 {
2972 type = US"authenticator";
2973 name = NULL;
2974 names_only = TRUE;
2975 }
2976
2977 else if (Ustrcmp(name, "macro_list") == 0)
2978 {
2979 type = US"macro";
2980 name = NULL;
2981 names_only = TRUE;
2982 }
2983
bc3c7bb7
HSHR
2984 else if (Ustrcmp(name, "environment") == 0)
2985 {
2986 if (environ)
2987 {
77560253 2988 uschar ** p;
bc3c7bb7 2989 for (p = USS environ; *p; p++) ;
84bbb4d8 2990 qsort(environ, p - USS environ, sizeof(*p), string_compare_by_pointer);
bc3c7bb7
HSHR
2991
2992 for (p = USS environ; *p; p++)
2993 {
77560253
JH
2994 uschar * q;
2995 if (no_labels && (q = Ustrchr(*p, '='))) *q = '\0';
f2cb6292 2996 puts(CS *p);
bc3c7bb7
HSHR
2997 }
2998 }
2999 return;
3000 }
3001
059ec3d9
PH
3002 else
3003 {
c0b9d3e8
JH
3004 print_ol(find_option(name, optionlist_config, nelem(optionlist_config)),
3005 name, NULL, optionlist_config, nelem(optionlist_config), no_labels);
059ec3d9
PH
3006 return;
3007 }
3008 }
3009
3010/* Handle the options for a router or transport. Skip options that are flagged
3011as hidden. Some of these are options with names starting with '*', used for
3012internal alternative representations of other options (which the printing
3013function will sort out). Others are synonyms kept for backward compatibility.
3014*/
3015
3016if (Ustrcmp(type, "router") == 0)
3017 {
3018 d = (driver_instance *)routers;
3019 ol2 = optionlist_routers;
3020 size = optionlist_routers_size;
3021 }
3022else if (Ustrcmp(type, "transport") == 0)
3023 {
3024 d = (driver_instance *)transports;
3025 ol2 = optionlist_transports;
3026 size = optionlist_transports_size;
3027 }
3028else if (Ustrcmp(type, "authenticator") == 0)
3029 {
3030 d = (driver_instance *)auths;
3031 ol2 = optionlist_auths;
3032 size = optionlist_auths_size;
3033 }
3034
5d9c27ec
TK
3035else if (Ustrcmp(type, "macro") == 0)
3036 {
3037 /* People store passwords in macros and they were previously not available
3038 for printing. So we have an admin_users restriction. */
3039 if (!admin_user)
3040 {
3041 fprintf(stderr, "exim: permission denied\n");
3042 exit(EXIT_FAILURE);
3043 }
8e6c4db1 3044 if (!macros_builtin_created) macros_create_builtin();
c193398d
JH
3045 for (m = macros; m; m = m->next)
3046 if (!name || Ustrcmp(name, m->name) == 0)
5d9c27ec
TK
3047 {
3048 if (names_only)
3049 printf("%s\n", CS m->name);
3050 else
3051 printf("%s=%s\n", CS m->name, CS m->replacement);
c193398d 3052 if (name)
5d9c27ec
TK
3053 return;
3054 }
c193398d 3055 if (name)
5d9c27ec
TK
3056 printf("%s %s not found\n", type, name);
3057 return;
3058 }
3059
059ec3d9
PH
3060if (names_only)
3061 {
3062 for (; d != NULL; d = d->next) printf("%s\n", CS d->name);
3063 return;
3064 }
3065
3066/* Either search for a given driver, or print all of them */
3067
3068for (; d != NULL; d = d->next)
3069 {
3070 if (name == NULL)
3071 printf("\n%s %s:\n", d->name, type);
3072 else if (Ustrcmp(d->name, name) != 0) continue;
3073
3074 for (ol = ol2; ol < ol2 + size; ol++)
3075 {
3076 if ((ol->type & opt_hidden) == 0)
12f69989 3077 print_ol(ol, US ol->name, d, ol2, size, no_labels);
059ec3d9
PH
3078 }
3079
3080 for (ol = d->info->options;
3081 ol < d->info->options + *(d->info->options_count); ol++)
3082 {
3083 if ((ol->type & opt_hidden) == 0)
12f69989 3084 print_ol(ol, US ol->name, d, d->info->options, *(d->info->options_count), no_labels);
059ec3d9
PH
3085 }
3086 if (name != NULL) return;
3087 }
3088if (name != NULL) printf("%s %s not found\n", type, name);
3089}
3090
3091
3092
3093/*************************************************
3094* Read a named list item *
3095*************************************************/
3096
3097/* This function reads a name and a list (i.e. string). The name is used to
3098save the list in a tree, sorted by its name. Each entry also has a number,
3099which can be used for caching tests, but if the string contains any expansion
3100items other than $key, the number is set negative to inhibit caching. This
3101mechanism is used for domain, host, and address lists that are referenced by
3102the "+name" syntax.
3103
3104Arguments:
3105 anchorp points to the tree anchor
3106 numberp points to the current number for this tree
3107 max the maximum number permitted
3108 s the text of the option line, starting immediately after the name
3109 of the list type
3110 tname the name of the list type, for messages
3111
3112Returns: nothing
3113*/
3114
3115static void
3116read_named_list(tree_node **anchorp, int *numberp, int max, uschar *s,
3117 uschar *tname)
3118{
3119BOOL forcecache = FALSE;
3120uschar *ss;
3121tree_node *t;
3122namedlist_block *nb = store_get(sizeof(namedlist_block));
3123
3124if (Ustrncmp(s, "_cache", 6) == 0)
3125 {
3126 forcecache = TRUE;
3127 s += 6;
3128 }
3129
3130if (!isspace(*s))
3131 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "unrecognized configuration line");
3132
3133if (*numberp >= max)
3134 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "too many named %ss (max is %d)\n",
3135 tname, max);
3136
3137while (isspace(*s)) s++;
3138ss = s;
3139while (isalnum(*s) || *s == '_') s++;
3140t = store_get(sizeof(tree_node) + s-ss);
3141Ustrncpy(t->name, ss, s-ss);
3142t->name[s-ss] = 0;
3143while (isspace(*s)) s++;
3144
3145if (!tree_insertnode(anchorp, t))
3146 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
3147 "duplicate name \"%s\" for a named %s", t->name, tname);
3148
3149t->data.ptr = nb;
3150nb->number = *numberp;
3151*numberp += 1;
3152
3153if (*s++ != '=') log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
3154 "missing '=' after \"%s\"", t->name);
3155while (isspace(*s)) s++;
3156nb->string = read_string(s, t->name);
3157nb->cache_data = NULL;
3158
3159/* Check the string for any expansions; if any are found, mark this list
3160uncacheable unless the user has explicited forced caching. */
3161
3162if (!forcecache && Ustrchr(nb->string, '$') != NULL) nb->number = -1;
3163}
3164
3165
3166
3167
3168/*************************************************
3169* Unpick data for a rate limit *
3170*************************************************/
3171
3172/* This function is called to unpick smtp_ratelimit_{mail,rcpt} into four
3173separate values.
3174
3175Arguments:
3176 s string, in the form t,b,f,l
3177 where t is the threshold (integer)
3178 b is the initial delay (time)
3179 f is the multiplicative factor (fixed point)
3180 k is the maximum time (time)
3181 threshold where to store threshold
3182 base where to store base in milliseconds
3183 factor where to store factor in milliseconds
3184 limit where to store limit
3185
3186Returns: nothing (panics on error)
3187*/
3188
3189static void
3190unpick_ratelimit(uschar *s, int *threshold, int *base, double *factor,
3191 int *limit)
3192{
3193uschar bstring[16], lstring[16];
3194
3195if (sscanf(CS s, "%d, %15[0123456789smhdw.], %lf, %15s", threshold, bstring,
3196 factor, lstring) == 4)
3197 {
3198 *base = readconf_readtime(bstring, 0, TRUE);
3199 *limit = readconf_readtime(lstring, 0, TRUE);
3200 if (*base >= 0 && *limit >= 0) return;
3201 }
3202log_write(0, LOG_MAIN|LOG_PANIC_DIE, "malformed ratelimit data: %s", s);
3203}
3204
3205
3206
3207
3208/*************************************************
3375e053
PP
3209* Drop privs for checking TLS config *
3210*************************************************/
3211
3212/* We want to validate TLS options during readconf, but do not want to be
3213root when we call into the TLS library, in case of library linkage errors
3214which cause segfaults; before this check, those were always done as the Exim
3215runtime user and it makes sense to continue with that.
3216
3217Assumes: tls_require_ciphers has been set, if it will be
3218 exim_user has been set, if it will be
3219 exim_group has been set, if it will be
3220
3221Returns: bool for "okay"; false will cause caller to immediately exit.
3222*/
3223
3224#ifdef SUPPORT_TLS
3225static BOOL
34e86e20 3226tls_dropprivs_validate_require_cipher(BOOL nowarn)
3375e053
PP
3227{
3228const uschar *errmsg;
3229pid_t pid;
3230int rc, status;
3231void (*oldsignal)(int);
3232
23f3dc67
JH
3233/* If TLS will never be used, no point checking ciphers */
3234
3235if ( !tls_advertise_hosts
3236 || !*tls_advertise_hosts
3237 || Ustrcmp(tls_advertise_hosts, ":") == 0
3238 )
3239 return TRUE;
34e86e20 3240else if (!nowarn && !tls_certificate)
23bb6982
JH
3241 log_write(0, LOG_MAIN,
3242 "Warning: No server certificate defined; will use a selfsigned one.\n"
23f3dc67
JH
3243 " Suggested action: either install a certificate or change tls_advertise_hosts option");
3244
3375e053
PP
3245oldsignal = signal(SIGCHLD, SIG_DFL);
3246
3247fflush(NULL);
3248if ((pid = fork()) < 0)
3249 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "fork failed for TLS check");
3250
3251if (pid == 0)
3252 {
1d7a353e
PP
3253 /* in some modes, will have dropped privilege already */
3254 if (!geteuid())
3255 exim_setugid(exim_uid, exim_gid, FALSE,
3256 US"calling tls_validate_require_cipher");
3375e053 3257
cf0c6164 3258 if ((errmsg = tls_validate_require_cipher()))
3375e053
PP
3259 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
3260 "tls_require_ciphers invalid: %s", errmsg);
3375e053
PP
3261 fflush(NULL);
3262 _exit(0);
3263 }
3264
3265do {
3266 rc = waitpid(pid, &status, 0);
3267} while (rc < 0 && errno == EINTR);
3268
9d26b8c0 3269DEBUG(D_tls)
3375e053
PP
3270 debug_printf("tls_validate_require_cipher child %d ended: status=0x%x\n",
3271 (int)pid, status);
3272
3273signal(SIGCHLD, oldsignal);
3274
3275return status == 0;
3276}
3277#endif /* SUPPORT_TLS */
3278
3279
3280
3281
3282/*************************************************
059ec3d9
PH
3283* Read main configuration options *
3284*************************************************/
3285
3286/* This function is the first to be called for configuration reading. It
3287opens the configuration file and reads general configuration settings until
3288it reaches the end of the configuration section. The file is then left open so
3289that the remaining configuration data can subsequently be read if needed for
3290this run of Exim.
3291
3292The configuration file must be owned either by root or exim, and be writeable
3293only by root or uid/gid exim. The values for Exim's uid and gid can be changed
3294in the config file, so the test is done on the compiled in values. A slight
3295anomaly, to be carefully documented.
3296
3297The name of the configuration file is taken from a list that is included in the
3298binary of Exim. It can be altered from the command line, but if that is done,
3299root privilege is immediately withdrawn unless the caller is root or exim.
3300The first file on the list that exists is used.
3301
3302For use on multiple systems that share file systems, first look for a
3303configuration file whose name has the current node name on the end. If that is
3304not found, try the generic name. For really contorted configurations, that run
3305multiple Exims with different uid settings, first try adding the effective uid
3306before the node name. These complications are going to waste resources on most
3307systems. Therefore they are available only when requested by compile-time
3308options. */
3309
3310void
34e86e20 3311readconf_main(BOOL nowarn)
059ec3d9
PH
3312{
3313int sep = 0;
3314struct stat statbuf;
3315uschar *s, *filename;
55414b25 3316const uschar *list = config_main_filelist;
059ec3d9
PH
3317
3318/* Loop through the possible file names */
3319
8e6c4db1 3320while((filename = string_nextinlist(&list, &sep, big_buffer, big_buffer_size)))
059ec3d9 3321 {
bc3c7bb7 3322
059ec3d9
PH
3323 /* Cut out all the fancy processing unless specifically wanted */
3324
3325 #if defined(CONFIGURE_FILE_USE_NODE) || defined(CONFIGURE_FILE_USE_EUID)
3326 uschar *suffix = filename + Ustrlen(filename);
3327
3328 /* Try for the node-specific file if a node name exists */
3329
3330 #ifdef CONFIGURE_FILE_USE_NODE
3331 struct utsname uts;
3332 if (uname(&uts) >= 0)
3333 {
3334 #ifdef CONFIGURE_FILE_USE_EUID
3335 sprintf(CS suffix, ".%ld.%.256s", (long int)original_euid, uts.nodename);
3336 config_file = Ufopen(filename, "rb");
3337 if (config_file == NULL)
3338 #endif /* CONFIGURE_FILE_USE_EUID */
3339 {
3340 sprintf(CS suffix, ".%.256s", uts.nodename);
3341 config_file = Ufopen(filename, "rb");
3342 }
3343 }
3344 #endif /* CONFIGURE_FILE_USE_NODE */
3345
3346 /* Otherwise, try the generic name, possibly with the euid added */
3347
3348 #ifdef CONFIGURE_FILE_USE_EUID
3349 if (config_file == NULL)
3350 {
3351 sprintf(CS suffix, ".%ld", (long int)original_euid);
3352 config_file = Ufopen(filename, "rb");
3353 }
3354 #endif /* CONFIGURE_FILE_USE_EUID */
3355
3356 /* Finally, try the unadorned name */
3357
3358 if (config_file == NULL)
3359 {
3360 *suffix = 0;
3361 config_file = Ufopen(filename, "rb");
3362 }
3363 #else /* if neither defined */
3364
3365 /* This is the common case when the fancy processing is not included. */
3366
3367 config_file = Ufopen(filename, "rb");
3368 #endif
3369
3370 /* If the file does not exist, continue to try any others. For any other
3371 error, break out (and die). */
3372
3373 if (config_file != NULL || errno != ENOENT) break;
3374 }
3375
3376/* On success, save the name for verification; config_filename is used when
3377logging configuration errors (it changes for .included files) whereas
3378config_main_filename is the name shown by -bP. Failure to open a configuration
3379file is a serious disaster. */
3380
8e7e1357 3381if (config_file)
059ec3d9 3382 {
8e7e1357 3383 uschar *last_slash = Ustrrchr(filename, '/');
059ec3d9 3384 config_filename = config_main_filename = string_copy(filename);
98b8312f 3385
8e7e1357
HSHR
3386 /* The config_main_directory we need for the $config_dir expansion.
3387 config_main_filename we need for $config_file expansion.
29f67888
HSHR
3388 And config_dir is the directory of the current configuration, used for
3389 relative .includes. We do need to know it's name, as we change our working
3390 directory later. */
3391
3392 if (filename[0] == '/')
8e7e1357 3393 config_main_directory = last_slash == filename ? US"/" : string_copyn(filename, last_slash - filename);
29f67888
HSHR
3394 else
3395 {
3396 /* relative configuration file name: working dir + / + basename(filename) */
3397
863bd541 3398 uschar buf[PATH_MAX];
29f67888
HSHR
3399 int offset = 0;
3400 int size = 0;
29f67888 3401
863bd541 3402 if (os_getcwd(buf, PATH_MAX) == NULL)
29f67888
HSHR
3403 {
3404 perror("exim: getcwd");
3405 exit(EXIT_FAILURE);
3406 }
3407 config_main_directory = string_cat(NULL, &size, &offset, buf);
3408
3409 /* If the dir does not end with a "/", append one */
3410 if (config_main_directory[offset-1] != '/')
8e7e1357 3411 config_main_directory = string_catn(config_main_directory, &size, &offset, US"/", 1);
29f67888
HSHR
3412
3413 /* If the config file contains a "/", extract the directory part */
8e7e1357
HSHR
3414 if (last_slash)
3415 config_main_directory = string_catn(config_main_directory, &size, &offset, filename, last_slash - filename);
3416
3417 config_main_directory[offset] = '\0';
29f67888
HSHR
3418 }
3419 config_directory = config_main_directory;
059ec3d9
PH
3420 }
3421else
3422 {
3423 if (filename == NULL)
3424 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "non-existent configuration file(s): "
3425 "%s", config_main_filelist);
3426 else
3427 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "%s", string_open_failed(errno,
3428 "configuration file %s", filename));
3429 }
3430
29f67888
HSHR
3431/* Now, once we found and opened our configuration file, we change the directory
3432to a safe place. Later we change to $spool_directory. */
3433
3434if (Uchdir("/") < 0)
3435 {
3436 perror("exim: chdir `/': ");
3437 exit(EXIT_FAILURE);
3438 }
3439
e2f5dc15 3440/* Check the status of the file we have opened, if we have retained root
fea24b2e 3441privileges and the file isn't /dev/null (which *should* be 0666). */
059ec3d9 3442
fea24b2e 3443if (trusted_config && Ustrcmp(filename, US"/dev/null"))
059ec3d9
PH
3444 {
3445 if (fstat(fileno(config_file), &statbuf) != 0)
3446 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "failed to stat configuration file %s",
3447 big_buffer);
3448
c1d94452 3449 if ((statbuf.st_uid != root_uid /* owner not root */
059ec3d9
PH
3450 #ifdef CONFIGURE_OWNER
3451 && statbuf.st_uid != config_uid /* owner not the special one */
3452 #endif
3453 ) || /* or */
c1d94452 3454 (statbuf.st_gid != root_gid /* group not root & */
35edf2ff
PH
3455 #ifdef CONFIGURE_GROUP
3456 && statbuf.st_gid != config_gid /* group not the special one */
8e669ac1 3457 #endif
35edf2ff 3458 && (statbuf.st_mode & 020) != 0) || /* group writeable */
059ec3d9
PH
3459 /* or */
3460 ((statbuf.st_mode & 2) != 0)) /* world writeable */
3461
3462 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "Exim configuration file %s has the "
3463 "wrong owner, group, or mode", big_buffer);
3464 }
3465
3466/* Process the main configuration settings. They all begin with a lower case
3467letter. If we see something starting with an upper case letter, it is taken as
3468a macro definition. */
3469
3470while ((s = get_config_line()) != NULL)
3471 {
af542dcf
HSHR
3472
3473 if (config_lineno == 1 && Ustrstr(s, "\xef\xbb\xbf") == s)
3474 log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN,
3475 "found unexpected BOM (Byte Order Mark)");
3476
cf00dad6 3477 if (isupper(s[0])) read_macro_assignment(s);
059ec3d9
PH
3478
3479 else if (Ustrncmp(s, "domainlist", 10) == 0)
3480 read_named_list(&domainlist_anchor, &domainlist_count,
3481 MAX_NAMED_LIST, s+10, US"domain list");
3482
3483 else if (Ustrncmp(s, "hostlist", 8) == 0)
3484 read_named_list(&hostlist_anchor, &hostlist_count,
3485 MAX_NAMED_LIST, s+8, US"host list");
3486
3487 else if (Ustrncmp(s, US"addresslist", 11) == 0)
3488 read_named_list(&addresslist_anchor, &addresslist_count,
3489 MAX_NAMED_LIST, s+11, US"address list");
3490
3491 else if (Ustrncmp(s, US"localpartlist", 13) == 0)
3492 read_named_list(&localpartlist_anchor, &localpartlist_count,
3493 MAX_NAMED_LIST, s+13, US"local part list");
3494
3495 else
3496 (void) readconf_handle_option(s, optionlist_config, optionlist_config_size,
3497 NULL, US"main option \"%s\" unknown");
3498 }
3499
3500
3501/* If local_sender_retain is set, local_from_check must be unset. */
3502
3503if (local_sender_retain && local_from_check)
3504 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "both local_from_check and "
3505 "local_sender_retain are set; this combination is not allowed");
3506
3507/* If the timezone string is empty, set it to NULL, implying no TZ variable
3508wanted. */
3509
3510if (timezone_string != NULL && *timezone_string == 0) timezone_string = NULL;
3511
944a9c55
PH
3512/* The max retry interval must not be greater than 24 hours. */
3513
3514if (retry_interval_max > 24*60*60) retry_interval_max = 24*60*60;
3515
059ec3d9
PH
3516/* remote_max_parallel must be > 0 */
3517
3518if (remote_max_parallel <= 0) remote_max_parallel = 1;
3519
6a3f1455
PH
3520/* Save the configured setting of freeze_tell, so we can re-instate it at the
3521start of a new SMTP message. */
3522
3523freeze_tell_config = freeze_tell;
3524
059ec3d9
PH
3525/* The primary host name may be required for expansion of spool_directory
3526and log_file_path, so make sure it is set asap. It is obtained from uname(),
3527but if that yields an unqualified value, make a FQDN by using gethostbyname to
3528canonize it. Some people like upper case letters in their host names, so we
3529don't force the case. */
3530
3531if (primary_hostname == NULL)
3532 {
55414b25 3533 const uschar *hostname;
059ec3d9
PH
3534 struct utsname uts;
3535 if (uname(&uts) < 0)
3536 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "uname() failed to yield host name");
3537 hostname = US uts.nodename;
3538
3539 if (Ustrchr(hostname, '.') == NULL)
3540 {
3541 int af = AF_INET;
3542 struct hostent *hostdata;
3543
3544 #if HAVE_IPV6
7e66e54d 3545 if (!disable_ipv6 && (dns_ipv4_lookup == NULL ||
55414b25
JH
3546 match_isinlist(hostname, CUSS &dns_ipv4_lookup, 0, NULL, NULL,
3547 MCL_DOMAIN, TRUE, NULL) != OK))
059ec3d9
PH
3548 af = AF_INET6;
3549 #else
3550 af = AF_INET;
3551 #endif
3552
3553 for (;;)
3554 {
3555 #if HAVE_IPV6
3556 #if HAVE_GETIPNODEBYNAME
3557 int error_num;
3558 hostdata = getipnodebyname(CS hostname, af, 0, &error_num);
3559 #else
3560 hostdata = gethostbyname2(CS hostname, af);
3561 #endif
3562 #else
3563 hostdata = gethostbyname(CS hostname);
3564 #endif
3565
3566 if (hostdata != NULL)
3567 {
3568 hostname = US hostdata->h_name;
3569 break;
3570 }
3571
3572 if (af == AF_INET) break;
3573 af = AF_INET;
3574 }
3575 }
3576
3577 primary_hostname = string_copy(hostname);
3578 }
3579
3580/* Set up default value for smtp_active_hostname */
3581
3582smtp_active_hostname = primary_hostname;
3583
3584/* If spool_directory wasn't set in the build-time configuration, it must have
3585got set above. Of course, writing to the log may not work if log_file_path is
3586not set, but it will at least get to syslog or somewhere, with any luck. */
3587
3588if (*spool_directory == 0)
3589 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "spool_directory undefined: cannot "
3590 "proceed");
3591
3592/* Expand the spool directory name; it may, for example, contain the primary
3593host name. Same comment about failure. */
3594
3595s = expand_string(spool_directory);
3596if (s == NULL)
3597 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "failed to expand spool_directory "
3598 "\"%s\": %s", spool_directory, expand_string_message);
3599spool_directory = s;
3600
3601/* Expand log_file_path, which must contain "%s" in any component that isn't
f1e5fef5
PP
3602the null string or "syslog". It is also allowed to contain one instance of %D
3603or %M. However, it must NOT contain % followed by anything else. */
059ec3d9
PH
3604
3605if (*log_file_path != 0)
3606 {
55414b25 3607 const uschar *ss, *sss;
059ec3d9
PH
3608 int sep = ':'; /* Fixed for log file path */
3609 s = expand_string(log_file_path);
3610 if (s == NULL)
3611 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "failed to expand log_file_path "
3612 "\"%s\": %s", log_file_path, expand_string_message);
3613
3614 ss = s;
3615 while ((sss = string_nextinlist(&ss,&sep,big_buffer,big_buffer_size)) != NULL)
3616 {
3617 uschar *t;
3618 if (sss[0] == 0 || Ustrcmp(sss, "syslog") == 0) continue;
3619 t = Ustrstr(sss, "%s");
3620 if (t == NULL)
3621 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "log_file_path \"%s\" does not "
3622 "contain \"%%s\"", sss);
3623 *t = 'X';
3624 t = Ustrchr(sss, '%');
3625 if (t != NULL)
3626 {
f1e5fef5 3627 if ((t[1] != 'D' && t[1] != 'M') || Ustrchr(t+2, '%') != NULL)
059ec3d9
PH
3628 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "log_file_path \"%s\" contains "
3629 "unexpected \"%%\" character", s);
3630 }
3631 }
3632
3633 log_file_path = s;
3634 }
3635
3636/* Interpret syslog_facility into an integer argument for 'ident' param to
3637openlog(). Default is LOG_MAIL set in globals.c. Allow the user to omit the
3638leading "log_". */
3639
3640if (syslog_facility_str != NULL)
3641 {
3642 int i;
3643 uschar *s = syslog_facility_str;
3644
3645 if ((Ustrlen(syslog_facility_str) >= 4) &&
3646 (strncmpic(syslog_facility_str, US"log_", 4) == 0))
3647 s += 4;
3648
3649 for (i = 0; i < syslog_list_size; i++)
3650 {
3651 if (strcmpic(s, syslog_list[i].name) == 0)
3652 {
3653 syslog_facility = syslog_list[i].value;
3654 break;
3655 }
3656 }
3657
3658 if (i >= syslog_list_size)
3659 {
3660 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
3661 "failed to interpret syslog_facility \"%s\"", syslog_facility_str);
3662 }
3663 }
3664
3665/* Expand pid_file_path */
3666
3667if (*pid_file_path != 0)
3668 {
3669 s = expand_string(pid_file_path);
3670 if (s == NULL)
3671 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "failed to expand pid_file_path "
3672 "\"%s\": %s", pid_file_path, expand_string_message);
3673 pid_file_path = s;
3674 }
3675
921b12ca
TF
3676/* Set default value of process_log_path */
3677
3678if (process_log_path == NULL || *process_log_path =='\0')
3679 process_log_path = string_sprintf("%s/exim-process.info", spool_directory);
3680
059ec3d9
PH
3681/* Compile the regex for matching a UUCP-style "From_" line in an incoming
3682message. */
3683
3684regex_From = regex_must_compile(uucp_from_pattern, FALSE, TRUE);
3685
3686/* Unpick the SMTP rate limiting options, if set */
3687
3688if (smtp_ratelimit_mail != NULL)
3689 {
3690 unpick_ratelimit(smtp_ratelimit_mail, &smtp_rlm_threshold,
3691 &smtp_rlm_base, &smtp_rlm_factor, &smtp_rlm_limit);
3692 }
3693
3694if (smtp_ratelimit_rcpt != NULL)
3695 {
3696 unpick_ratelimit(smtp_ratelimit_rcpt, &smtp_rlr_threshold,
3697 &smtp_rlr_base, &smtp_rlr_factor, &smtp_rlr_limit);
3698 }
3699
3700/* The qualify domains default to the primary host name */
3701
3702if (qualify_domain_sender == NULL)
3703 qualify_domain_sender = primary_hostname;
3704if (qualify_domain_recipient == NULL)
3705 qualify_domain_recipient = qualify_domain_sender;
3706
3707/* Setting system_filter_user in the configuration sets the gid as well if a
3708name is given, but a numerical value does not. */
3709
3710if (system_filter_uid_set && !system_filter_gid_set)
3711 {
3712 struct passwd *pw = getpwuid(system_filter_uid);
3713 if (pw == NULL)
3714 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "Failed to look up uid %ld",
3715 (long int)system_filter_uid);
3716 system_filter_gid = pw->pw_gid;
3717 system_filter_gid_set = TRUE;
3718 }
3719
3720/* If the errors_reply_to field is set, check that it is syntactically valid
3721and ensure it contains a domain. */
3722
3723if (errors_reply_to != NULL)
3724 {
3725 uschar *errmess;
3726 int start, end, domain;
3727 uschar *recipient = parse_extract_address(errors_reply_to, &errmess,
3728 &start, &end, &domain, FALSE);
3729
3730 if (recipient == NULL)
3731 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
3732 "error in errors_reply_to (%s): %s", errors_reply_to, errmess);
3733
3734 if (domain == 0)
3735 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
3736 "errors_reply_to (%s) does not contain a domain", errors_reply_to);
3737 }
3738
3739/* If smtp_accept_queue or smtp_accept_max_per_host is set, then
3740smtp_accept_max must also be set. */
3741
3742if (smtp_accept_max == 0 &&
3743 (smtp_accept_queue > 0 || smtp_accept_max_per_host != NULL))
3744 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
3745 "smtp_accept_max must be set if smtp_accept_queue or "
3746 "smtp_accept_max_per_host is set");
3747
3748/* Set up the host number if anything is specified. It is an expanded string
3749so that it can be computed from the host name, for example. We do this last
3750so as to ensure that everything else is set up before the expansion. */
3751
3752if (host_number_string != NULL)
3753 {
ef840681 3754 long int n;
059ec3d9
PH
3755 uschar *end;
3756 uschar *s = expand_string(host_number_string);
ef840681
PP