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c988f1f4 | 1 | /* $Cambridge: exim/src/src/readconf.c,v 1.4 2005/01/04 10:00:42 ph10 Exp $ */ |
059ec3d9 PH |
2 | |
3 | /************************************************* | |
4 | * Exim - an Internet mail transport agent * | |
5 | *************************************************/ | |
6 | ||
c988f1f4 | 7 | /* Copyright (c) University of Cambridge 1995 - 2005 */ |
059ec3d9 PH |
8 | /* See the file NOTICE for conditions of use and distribution. */ |
9 | ||
10 | /* Functions for reading the configuration file, and for displaying | |
11 | overall configuration values. Thanks to Brian Candler for the original | |
12 | implementation of the conditional .ifdef etc. */ | |
13 | ||
14 | #include "exim.h" | |
15 | ||
16 | #define CSTATE_STACK_SIZE 10 | |
17 | ||
18 | ||
19 | /* Structure for chain (stack) of .included files */ | |
20 | ||
21 | typedef struct config_file_item { | |
22 | struct config_file_item *next; | |
23 | uschar *filename; | |
24 | FILE *file; | |
25 | int lineno; | |
26 | } config_file_item; | |
27 | ||
28 | /* Structure of table of conditional words and their state transitions */ | |
29 | ||
30 | typedef struct cond_item { | |
31 | uschar *name; | |
32 | int namelen; | |
33 | int action1; | |
34 | int action2; | |
35 | int pushpop; | |
36 | } cond_item; | |
37 | ||
38 | /* Structure of table of syslog facility names and values */ | |
39 | ||
40 | typedef struct syslog_fac_item { | |
41 | uschar *name; | |
42 | int value; | |
43 | } syslog_fac_item; | |
44 | ||
45 | ||
46 | /* Static variables */ | |
47 | ||
48 | static config_file_item *config_file_stack = NULL; /* For includes */ | |
49 | ||
50 | static uschar *syslog_facility_str = NULL; | |
51 | static uschar next_section[24]; | |
52 | static uschar time_buffer[24]; | |
53 | ||
54 | /* State variables for conditional loading (.ifdef / .else / .endif) */ | |
55 | ||
56 | static int cstate = 0; | |
57 | static int cstate_stack_ptr = -1; | |
58 | static int cstate_stack[CSTATE_STACK_SIZE]; | |
59 | ||
60 | /* Table of state transitions for handling conditional inclusions. There are | |
61 | four possible state transitions: | |
62 | ||
63 | .ifdef true | |
64 | .ifdef false | |
65 | .elifdef true (or .else) | |
66 | .elifdef false | |
67 | ||
68 | .endif just causes the previous cstate to be popped off the stack */ | |
69 | ||
70 | static int next_cstate[3][4] = | |
71 | { | |
72 | /* State 0: reading from file, or reading until next .else or .endif */ | |
73 | { 0, 1, 2, 2 }, | |
74 | /* State 1: condition failed, skipping until next .else or .endif */ | |
75 | { 2, 2, 0, 1 }, | |
76 | /* State 2: skipping until .endif */ | |
77 | { 2, 2, 2, 2 }, | |
78 | }; | |
79 | ||
80 | /* Table of conditionals and the states to set. For each name, there are four | |
81 | values: the length of the name (to save computing it each time), the state to | |
82 | set if a macro was found in the line, the state to set if a macro was not found | |
83 | in the line, and a stack manipulation setting which is: | |
84 | ||
85 | -1 pull state value off the stack | |
86 | 0 don't alter the stack | |
87 | +1 push value onto stack, before setting new state | |
88 | */ | |
89 | ||
90 | static cond_item cond_list[] = { | |
91 | { US"ifdef", 5, 0, 1, 1 }, | |
92 | { US"ifndef", 6, 1, 0, 1 }, | |
93 | { US"elifdef", 7, 2, 3, 0 }, | |
94 | { US"elifndef", 8, 3, 2, 0 }, | |
95 | { US"else", 4, 2, 2, 0 }, | |
96 | { US"endif", 5, 0, 0, -1 } | |
97 | }; | |
98 | ||
99 | static int cond_list_size = sizeof(cond_list)/sizeof(cond_item); | |
100 | ||
101 | /* Table of syslog facility names and their values */ | |
102 | ||
103 | static syslog_fac_item syslog_list[] = { | |
104 | { US"mail", LOG_MAIL }, | |
105 | { US"user", LOG_USER }, | |
106 | { US"news", LOG_NEWS }, | |
107 | { US"uucp", LOG_UUCP }, | |
108 | { US"local0", LOG_LOCAL0 }, | |
109 | { US"local1", LOG_LOCAL1 }, | |
110 | { US"local2", LOG_LOCAL2 }, | |
111 | { US"local3", LOG_LOCAL3 }, | |
112 | { US"local4", LOG_LOCAL4 }, | |
113 | { US"local5", LOG_LOCAL5 }, | |
114 | { US"local6", LOG_LOCAL6 }, | |
115 | { US"local7", LOG_LOCAL7 }, | |
116 | { US"daemon", LOG_DAEMON } | |
117 | }; | |
118 | ||
119 | static int syslog_list_size = sizeof(syslog_list)/sizeof(syslog_fac_item); | |
120 | ||
121 | ||
122 | ||
123 | ||
124 | /************************************************* | |
125 | * Main configuration options * | |
126 | *************************************************/ | |
127 | ||
128 | /* The list of options that can be set in the main configuration file. This | |
129 | must be in alphabetic order because it is searched by binary chop. */ | |
130 | ||
131 | static optionlist optionlist_config[] = { | |
132 | { "*set_exim_group", opt_bool|opt_hidden, &exim_gid_set }, | |
133 | { "*set_exim_user", opt_bool|opt_hidden, &exim_uid_set }, | |
134 | { "*set_system_filter_group", opt_bool|opt_hidden, &system_filter_gid_set }, | |
135 | { "*set_system_filter_user", opt_bool|opt_hidden, &system_filter_uid_set }, | |
136 | { "accept_8bitmime", opt_bool, &accept_8bitmime }, | |
137 | { "acl_not_smtp", opt_stringptr, &acl_not_smtp }, | |
138 | { "acl_smtp_auth", opt_stringptr, &acl_smtp_auth }, | |
139 | { "acl_smtp_connect", opt_stringptr, &acl_smtp_connect }, | |
140 | { "acl_smtp_data", opt_stringptr, &acl_smtp_data }, | |
141 | { "acl_smtp_etrn", opt_stringptr, &acl_smtp_etrn }, | |
142 | { "acl_smtp_expn", opt_stringptr, &acl_smtp_expn }, | |
143 | { "acl_smtp_helo", opt_stringptr, &acl_smtp_helo }, | |
144 | { "acl_smtp_mail", opt_stringptr, &acl_smtp_mail }, | |
145 | { "acl_smtp_mailauth", opt_stringptr, &acl_smtp_mailauth }, | |
8523533c TK |
146 | #ifdef WITH_CONTENT_SCAN |
147 | { "acl_smtp_mime", opt_stringptr, &acl_smtp_mime }, | |
148 | #endif | |
059ec3d9 PH |
149 | { "acl_smtp_predata", opt_stringptr, &acl_smtp_predata }, |
150 | { "acl_smtp_quit", opt_stringptr, &acl_smtp_quit }, | |
151 | { "acl_smtp_rcpt", opt_stringptr, &acl_smtp_rcpt }, | |
152 | #ifdef SUPPORT_TLS | |
153 | { "acl_smtp_starttls", opt_stringptr, &acl_smtp_starttls }, | |
154 | #endif | |
155 | { "acl_smtp_vrfy", opt_stringptr, &acl_smtp_vrfy }, | |
156 | { "admin_groups", opt_gidlist, &admin_groups }, | |
157 | { "allow_domain_literals", opt_bool, &allow_domain_literals }, | |
158 | { "allow_mx_to_ip", opt_bool, &allow_mx_to_ip }, | |
159 | { "allow_utf8_domains", opt_bool, &allow_utf8_domains }, | |
160 | { "auth_advertise_hosts", opt_stringptr, &auth_advertise_hosts }, | |
161 | { "auto_thaw", opt_time, &auto_thaw }, | |
8523533c TK |
162 | #ifdef WITH_CONTENT_SCAN |
163 | { "av_scanner", opt_stringptr, &av_scanner }, | |
164 | #endif | |
059ec3d9 | 165 | { "bi_command", opt_stringptr, &bi_command }, |
8523533c TK |
166 | #ifdef EXPERIMENTAL_BRIGHTMAIL |
167 | { "bmi_config_file", opt_stringptr, &bmi_config_file }, | |
168 | #endif | |
059ec3d9 PH |
169 | { "bounce_message_file", opt_stringptr, &bounce_message_file }, |
170 | { "bounce_message_text", opt_stringptr, &bounce_message_text }, | |
171 | { "bounce_return_body", opt_bool, &bounce_return_body }, | |
172 | { "bounce_return_message", opt_bool, &bounce_return_message }, | |
173 | { "bounce_return_size_limit", opt_mkint, &bounce_return_size_limit }, | |
174 | { "bounce_sender_authentication",opt_stringptr,&bounce_sender_authentication }, | |
175 | { "callout_domain_negative_expire", opt_time, &callout_cache_domain_negative_expire }, | |
176 | { "callout_domain_positive_expire", opt_time, &callout_cache_domain_positive_expire }, | |
177 | { "callout_negative_expire", opt_time, &callout_cache_negative_expire }, | |
178 | { "callout_positive_expire", opt_time, &callout_cache_positive_expire }, | |
179 | { "callout_random_local_part",opt_stringptr, &callout_random_local_part }, | |
180 | { "check_log_inodes", opt_int, &check_log_inodes }, | |
181 | { "check_log_space", opt_Kint, &check_log_space }, | |
182 | { "check_spool_inodes", opt_int, &check_spool_inodes }, | |
183 | { "check_spool_space", opt_Kint, &check_spool_space }, | |
184 | { "daemon_smtp_port", opt_stringptr|opt_hidden, &daemon_smtp_port }, | |
185 | { "daemon_smtp_ports", opt_stringptr, &daemon_smtp_port }, | |
186 | { "delay_warning", opt_timelist, &delay_warning }, | |
187 | { "delay_warning_condition", opt_stringptr, &delay_warning_condition }, | |
188 | { "deliver_drop_privilege", opt_bool, &deliver_drop_privilege }, | |
189 | { "deliver_queue_load_max", opt_fixed, &deliver_queue_load_max }, | |
190 | { "delivery_date_remove", opt_bool, &delivery_date_remove }, | |
191 | { "dns_again_means_nonexist", opt_stringptr, &dns_again_means_nonexist }, | |
192 | { "dns_check_names_pattern", opt_stringptr, &check_dns_names_pattern }, | |
193 | { "dns_ipv4_lookup", opt_stringptr, &dns_ipv4_lookup }, | |
194 | { "dns_retrans", opt_time, &dns_retrans }, | |
195 | { "dns_retry", opt_int, &dns_retry }, | |
196 | /* This option is now a no-op, retained for compability */ | |
197 | { "drop_cr", opt_bool, &drop_cr }, | |
198 | /*********************************************************/ | |
199 | { "envelope_to_remove", opt_bool, &envelope_to_remove }, | |
200 | { "errors_copy", opt_stringptr, &errors_copy }, | |
201 | { "errors_reply_to", opt_stringptr, &errors_reply_to }, | |
202 | { "exim_group", opt_gid, &exim_gid }, | |
203 | { "exim_path", opt_stringptr, &exim_path }, | |
204 | { "exim_user", opt_uid, &exim_uid }, | |
205 | { "extra_local_interfaces", opt_stringptr, &extra_local_interfaces }, | |
206 | { "extract_addresses_remove_arguments", opt_bool, &extract_addresses_remove_arguments }, | |
207 | { "finduser_retries", opt_int, &finduser_retries }, | |
208 | { "freeze_tell", opt_stringptr, &freeze_tell }, | |
209 | { "gecos_name", opt_stringptr, &gecos_name }, | |
210 | { "gecos_pattern", opt_stringptr, &gecos_pattern }, | |
211 | { "header_line_maxsize", opt_int, &header_line_maxsize }, | |
212 | { "header_maxsize", opt_int, &header_maxsize }, | |
213 | { "headers_charset", opt_stringptr, &headers_charset }, | |
214 | { "helo_accept_junk_hosts", opt_stringptr, &helo_accept_junk_hosts }, | |
215 | { "helo_allow_chars", opt_stringptr, &helo_allow_chars }, | |
216 | { "helo_lookup_domains", opt_stringptr, &helo_lookup_domains }, | |
217 | { "helo_try_verify_hosts", opt_stringptr, &helo_try_verify_hosts }, | |
218 | { "helo_verify_hosts", opt_stringptr, &helo_verify_hosts }, | |
219 | { "hold_domains", opt_stringptr, &hold_domains }, | |
220 | { "host_lookup", opt_stringptr, &host_lookup }, | |
221 | { "host_lookup_order", opt_stringptr, &host_lookup_order }, | |
222 | { "host_reject_connection", opt_stringptr, &host_reject_connection }, | |
223 | { "hosts_connection_nolog", opt_stringptr, &hosts_connection_nolog }, | |
224 | { "hosts_treat_as_local", opt_stringptr, &hosts_treat_as_local }, | |
225 | #ifdef LOOKUP_IBASE | |
226 | { "ibase_servers", opt_stringptr, &ibase_servers }, | |
227 | #endif | |
228 | { "ignore_bounce_errors_after", opt_time, &ignore_bounce_errors_after }, | |
229 | { "ignore_fromline_hosts", opt_stringptr, &ignore_fromline_hosts }, | |
230 | { "ignore_fromline_local", opt_bool, &ignore_fromline_local }, | |
231 | { "keep_malformed", opt_time, &keep_malformed }, | |
232 | #ifdef LOOKUP_LDAP | |
233 | { "ldap_default_servers", opt_stringptr, &eldap_default_servers }, | |
234 | { "ldap_version", opt_int, &eldap_version }, | |
235 | #endif | |
236 | { "local_from_check", opt_bool, &local_from_check }, | |
237 | { "local_from_prefix", opt_stringptr, &local_from_prefix }, | |
238 | { "local_from_suffix", opt_stringptr, &local_from_suffix }, | |
239 | { "local_interfaces", opt_stringptr, &local_interfaces }, | |
240 | { "local_scan_timeout", opt_time, &local_scan_timeout }, | |
241 | { "local_sender_retain", opt_bool, &local_sender_retain }, | |
242 | { "localhost_number", opt_stringptr, &host_number_string }, | |
243 | { "log_file_path", opt_stringptr, &log_file_path }, | |
244 | { "log_selector", opt_stringptr, &log_selector_string }, | |
245 | { "log_timezone", opt_bool, &log_timezone }, | |
246 | { "lookup_open_max", opt_int, &lookup_open_max }, | |
247 | { "max_username_length", opt_int, &max_username_length }, | |
248 | { "message_body_visible", opt_mkint, &message_body_visible }, | |
249 | { "message_id_header_domain", opt_stringptr, &message_id_domain }, | |
250 | { "message_id_header_text", opt_stringptr, &message_id_text }, | |
251 | { "message_logs", opt_bool, &message_logs }, | |
252 | { "message_size_limit", opt_stringptr, &message_size_limit }, | |
253 | #ifdef SUPPORT_MOVE_FROZEN_MESSAGES | |
254 | { "move_frozen_messages", opt_bool, &move_frozen_messages }, | |
255 | #endif | |
256 | { "mua_wrapper", opt_bool, &mua_wrapper }, | |
257 | #ifdef LOOKUP_MYSQL | |
258 | { "mysql_servers", opt_stringptr, &mysql_servers }, | |
259 | #endif | |
260 | { "never_users", opt_uidlist, &never_users }, | |
261 | #ifdef LOOKUP_ORACLE | |
262 | { "oracle_servers", opt_stringptr, &oracle_servers }, | |
263 | #endif | |
264 | { "percent_hack_domains", opt_stringptr, &percent_hack_domains }, | |
265 | #ifdef EXIM_PERL | |
266 | { "perl_at_start", opt_bool, &opt_perl_at_start }, | |
267 | { "perl_startup", opt_stringptr, &opt_perl_startup }, | |
268 | #endif | |
269 | #ifdef LOOKUP_PGSQL | |
270 | { "pgsql_servers", opt_stringptr, &pgsql_servers }, | |
271 | #endif | |
272 | { "pid_file_path", opt_stringptr, &pid_file_path }, | |
273 | { "pipelining_advertise_hosts", opt_stringptr, &pipelining_advertise_hosts }, | |
274 | { "preserve_message_logs", opt_bool, &preserve_message_logs }, | |
275 | { "primary_hostname", opt_stringptr, &primary_hostname }, | |
276 | { "print_topbitchars", opt_bool, &print_topbitchars }, | |
277 | { "process_log_path", opt_stringptr, &process_log_path }, | |
278 | { "prod_requires_admin", opt_bool, &prod_requires_admin }, | |
279 | { "qualify_domain", opt_stringptr, &qualify_domain_sender }, | |
280 | { "qualify_recipient", opt_stringptr, &qualify_domain_recipient }, | |
281 | { "queue_domains", opt_stringptr, &queue_domains }, | |
282 | { "queue_list_requires_admin",opt_bool, &queue_list_requires_admin }, | |
283 | { "queue_only", opt_bool, &queue_only }, | |
284 | { "queue_only_file", opt_stringptr, &queue_only_file }, | |
285 | { "queue_only_load", opt_fixed, &queue_only_load }, | |
286 | { "queue_only_override", opt_bool, &queue_only_override }, | |
287 | { "queue_run_in_order", opt_bool, &queue_run_in_order }, | |
288 | { "queue_run_max", opt_int, &queue_run_max }, | |
289 | { "queue_smtp_domains", opt_stringptr, &queue_smtp_domains }, | |
290 | { "receive_timeout", opt_time, &receive_timeout }, | |
291 | { "received_header_text", opt_stringptr, &received_header_text }, | |
292 | { "received_headers_max", opt_int, &received_headers_max }, | |
293 | { "recipient_unqualified_hosts", opt_stringptr, &recipient_unqualified_hosts }, | |
294 | { "recipients_max", opt_int, &recipients_max }, | |
295 | { "recipients_max_reject", opt_bool, &recipients_max_reject }, | |
296 | { "remote_max_parallel", opt_int, &remote_max_parallel }, | |
297 | { "remote_sort_domains", opt_stringptr, &remote_sort_domains }, | |
298 | { "retry_data_expire", opt_time, &retry_data_expire }, | |
299 | { "retry_interval_max", opt_time, &retry_interval_max }, | |
300 | { "return_path_remove", opt_bool, &return_path_remove }, | |
301 | { "return_size_limit", opt_mkint|opt_hidden, &bounce_return_size_limit }, | |
302 | { "rfc1413_hosts", opt_stringptr, &rfc1413_hosts }, | |
303 | { "rfc1413_query_timeout", opt_time, &rfc1413_query_timeout }, | |
304 | { "sender_unqualified_hosts", opt_stringptr, &sender_unqualified_hosts }, | |
305 | { "smtp_accept_keepalive", opt_bool, &smtp_accept_keepalive }, | |
306 | { "smtp_accept_max", opt_int, &smtp_accept_max }, | |
307 | { "smtp_accept_max_nonmail", opt_int, &smtp_accept_max_nonmail }, | |
308 | { "smtp_accept_max_nonmail_hosts", opt_stringptr, &smtp_accept_max_nonmail_hosts }, | |
309 | { "smtp_accept_max_per_connection", opt_int, &smtp_accept_max_per_connection }, | |
310 | { "smtp_accept_max_per_host", opt_stringptr, &smtp_accept_max_per_host }, | |
311 | { "smtp_accept_queue", opt_int, &smtp_accept_queue }, | |
312 | { "smtp_accept_queue_per_connection", opt_int, &smtp_accept_queue_per_connection }, | |
313 | { "smtp_accept_reserve", opt_int, &smtp_accept_reserve }, | |
314 | { "smtp_active_hostname", opt_stringptr, &raw_active_hostname }, | |
315 | { "smtp_banner", opt_stringptr, &smtp_banner }, | |
316 | { "smtp_check_spool_space", opt_bool, &smtp_check_spool_space }, | |
317 | { "smtp_connect_backlog", opt_int, &smtp_connect_backlog }, | |
318 | { "smtp_enforce_sync", opt_bool, &smtp_enforce_sync }, | |
319 | { "smtp_etrn_command", opt_stringptr, &smtp_etrn_command }, | |
320 | { "smtp_etrn_serialize", opt_bool, &smtp_etrn_serialize }, | |
321 | { "smtp_load_reserve", opt_fixed, &smtp_load_reserve }, | |
322 | { "smtp_max_synprot_errors", opt_int, &smtp_max_synprot_errors }, | |
323 | { "smtp_max_unknown_commands",opt_int, &smtp_max_unknown_commands }, | |
324 | { "smtp_ratelimit_hosts", opt_stringptr, &smtp_ratelimit_hosts }, | |
325 | { "smtp_ratelimit_mail", opt_stringptr, &smtp_ratelimit_mail }, | |
326 | { "smtp_ratelimit_rcpt", opt_stringptr, &smtp_ratelimit_rcpt }, | |
327 | { "smtp_receive_timeout", opt_time, &smtp_receive_timeout }, | |
328 | { "smtp_reserve_hosts", opt_stringptr, &smtp_reserve_hosts }, | |
329 | { "smtp_return_error_details",opt_bool, &smtp_return_error_details }, | |
8523533c TK |
330 | #ifdef WITH_CONTENT_SCAN |
331 | { "spamd_address", opt_stringptr, &spamd_address }, | |
332 | #endif | |
059ec3d9 PH |
333 | { "split_spool_directory", opt_bool, &split_spool_directory }, |
334 | { "spool_directory", opt_stringptr, &spool_directory }, | |
8523533c TK |
335 | #ifdef EXPERIMENTAL_SRS |
336 | { "srs_config", opt_stringptr, &srs_config }, | |
337 | #endif | |
059ec3d9 PH |
338 | { "strip_excess_angle_brackets", opt_bool, &strip_excess_angle_brackets }, |
339 | { "strip_trailing_dot", opt_bool, &strip_trailing_dot }, | |
340 | { "syslog_duplication", opt_bool, &syslog_duplication }, | |
341 | { "syslog_facility", opt_stringptr, &syslog_facility_str }, | |
342 | { "syslog_processname", opt_stringptr, &syslog_processname }, | |
343 | { "syslog_timestamp", opt_bool, &syslog_timestamp }, | |
344 | { "system_filter", opt_stringptr, &system_filter }, | |
345 | { "system_filter_directory_transport", opt_stringptr,&system_filter_directory_transport }, | |
346 | { "system_filter_file_transport",opt_stringptr,&system_filter_file_transport }, | |
347 | { "system_filter_group", opt_gid, &system_filter_gid }, | |
348 | { "system_filter_pipe_transport",opt_stringptr,&system_filter_pipe_transport }, | |
349 | { "system_filter_reply_transport",opt_stringptr,&system_filter_reply_transport }, | |
350 | { "system_filter_user", opt_uid, &system_filter_uid }, | |
351 | { "tcp_nodelay", opt_bool, &tcp_nodelay }, | |
352 | { "timeout_frozen_after", opt_time, &timeout_frozen_after }, | |
353 | { "timezone", opt_stringptr, &timezone_string }, | |
354 | #ifdef SUPPORT_TLS | |
355 | { "tls_advertise_hosts", opt_stringptr, &tls_advertise_hosts }, | |
356 | { "tls_certificate", opt_stringptr, &tls_certificate }, | |
357 | { "tls_crl", opt_stringptr, &tls_crl }, | |
358 | { "tls_dhparam", opt_stringptr, &tls_dhparam }, | |
359 | { "tls_on_connect_ports", opt_stringptr, &tls_on_connect_ports }, | |
360 | { "tls_privatekey", opt_stringptr, &tls_privatekey }, | |
361 | { "tls_remember_esmtp", opt_bool, &tls_remember_esmtp }, | |
362 | { "tls_require_ciphers", opt_stringptr, &tls_require_ciphers }, | |
363 | { "tls_try_verify_hosts", opt_stringptr, &tls_try_verify_hosts }, | |
364 | { "tls_verify_certificates", opt_stringptr, &tls_verify_certificates }, | |
365 | { "tls_verify_hosts", opt_stringptr, &tls_verify_hosts }, | |
366 | #endif | |
367 | { "trusted_groups", opt_gidlist, &trusted_groups }, | |
368 | { "trusted_users", opt_uidlist, &trusted_users }, | |
369 | { "unknown_login", opt_stringptr, &unknown_login }, | |
370 | { "unknown_username", opt_stringptr, &unknown_username }, | |
371 | { "untrusted_set_sender", opt_stringptr, &untrusted_set_sender }, | |
372 | { "uucp_from_pattern", opt_stringptr, &uucp_from_pattern }, | |
373 | { "uucp_from_sender", opt_stringptr, &uucp_from_sender }, | |
374 | { "warn_message_file", opt_stringptr, &warn_message_file }, | |
375 | { "write_rejectlog", opt_bool, &write_rejectlog } | |
376 | }; | |
377 | ||
378 | static int optionlist_config_size = | |
379 | sizeof(optionlist_config)/sizeof(optionlist); | |
380 | ||
381 | ||
382 | ||
383 | /************************************************* | |
384 | * Find the name of an option * | |
385 | *************************************************/ | |
386 | ||
387 | /* This function is to aid debugging. Various functions take arguments that are | |
388 | pointer variables in the options table or in option tables for various drivers. | |
389 | For debugging output, it is useful to be able to find the name of the option | |
390 | which is currently being processed. This function finds it, if it exists, by | |
391 | searching the table(s). | |
392 | ||
393 | Arguments: a value that is presumed to be in the table above | |
394 | Returns: the option name, or an empty string | |
395 | */ | |
396 | ||
397 | uschar * | |
398 | readconf_find_option(void *p) | |
399 | { | |
400 | int i; | |
401 | router_instance *r; | |
402 | transport_instance *t; | |
403 | ||
404 | for (i = 0; i < optionlist_config_size; i++) | |
405 | if (p == optionlist_config[i].value) return US optionlist_config[i].name; | |
406 | ||
407 | for (r = routers; r != NULL; r = r->next) | |
408 | { | |
409 | router_info *ri = r->info; | |
410 | for (i = 0; i < ri->options_count[0]; i++) | |
411 | { | |
412 | if ((ri->options[i].type & opt_mask) != opt_stringptr) continue; | |
413 | if (p == (char *)(r->options_block) + (long int)(ri->options[i].value)) | |
414 | return US ri->options[i].name; | |
415 | } | |
416 | } | |
417 | ||
418 | for (t = transports; t != NULL; t = t->next) | |
419 | { | |
420 | transport_info *ti = t->info; | |
421 | for (i = 0; i < ti->options_count[0]; i++) | |
422 | { | |
423 | if ((ti->options[i].type & opt_mask) != opt_stringptr) continue; | |
424 | if (p == (char *)(t->options_block) + (long int)(ti->options[i].value)) | |
425 | return US ti->options[i].name; | |
426 | } | |
427 | } | |
428 | ||
429 | return US""; | |
430 | } | |
431 | ||
432 | ||
433 | ||
434 | ||
435 | ||
436 | /************************************************* | |
437 | * Read configuration line * | |
438 | *************************************************/ | |
439 | ||
440 | /* A logical line of text is read from the configuration file into the big | |
441 | buffer, taking account of macros, .includes, and continuations. The size of | |
442 | big_buffer is increased if necessary. The count of configuration lines is | |
443 | maintained. Physical input lines starting with # (ignoring leading white space, | |
444 | and after macro replacement) and empty logical lines are always ignored. | |
445 | Leading and trailing spaces are removed. | |
446 | ||
447 | If we hit a line of the form "begin xxxx", the xxxx is placed in the | |
448 | next_section vector, and the function returns NULL, indicating the end of a | |
449 | configuration section. On end-of-file, NULL is returned with next_section | |
450 | empty. | |
451 | ||
452 | Arguments: none | |
453 | ||
454 | Returns: a pointer to the first non-blank in the line, | |
455 | or NULL if eof or end of section is reached | |
456 | */ | |
457 | ||
458 | static uschar * | |
459 | get_config_line(void) | |
460 | { | |
461 | int startoffset = 0; /* To first non-blank char in logical line */ | |
462 | int len = 0; /* Of logical line so far */ | |
463 | int newlen; | |
464 | uschar *s, *ss; | |
465 | macro_item *m; | |
466 | BOOL macro_found; | |
467 | ||
468 | /* Loop for handling continuation lines, skipping comments, and dealing with | |
469 | .include files. */ | |
470 | ||
471 | for (;;) | |
472 | { | |
473 | if (Ufgets(big_buffer+len, big_buffer_size-len, config_file) == NULL) | |
474 | { | |
475 | if (config_file_stack != NULL) /* EOF inside .include */ | |
476 | { | |
477 | fclose(config_file); | |
478 | config_file = config_file_stack->file; | |
479 | config_filename = config_file_stack->filename; | |
480 | config_lineno = config_file_stack->lineno; | |
481 | config_file_stack = config_file_stack->next; | |
482 | continue; | |
483 | } | |
484 | ||
485 | /* EOF at top level */ | |
486 | ||
487 | if (cstate_stack_ptr >= 0) | |
488 | log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, | |
489 | "Unexpected end of configuration file: .endif missing"); | |
490 | ||
491 | if (len != 0) break; /* EOF after continuation */ | |
492 | next_section[0] = 0; /* EOF at start of logical line */ | |
493 | return NULL; | |
494 | } | |
495 | ||
496 | config_lineno++; | |
497 | newlen = len + Ustrlen(big_buffer + len); | |
498 | ||
499 | /* Handle pathologically long physical lines - yes, it did happen - by | |
500 | extending big_buffer at this point. The code also copes with very long | |
501 | logical lines. */ | |
502 | ||
503 | while (newlen == big_buffer_size - 1 && big_buffer[newlen - 1] != '\n') | |
504 | { | |
505 | uschar *newbuffer; | |
506 | big_buffer_size += BIG_BUFFER_SIZE; | |
507 | newbuffer = store_malloc(big_buffer_size); | |
508 | ||
509 | /* This use of strcpy is OK because we know that the string in the old | |
510 | buffer is shorter than the new buffer. */ | |
511 | ||
512 | Ustrcpy(newbuffer, big_buffer); | |
513 | store_free(big_buffer); | |
514 | big_buffer = newbuffer; | |
515 | if (Ufgets(big_buffer+newlen, big_buffer_size-newlen, config_file) == NULL) | |
516 | break; | |
517 | newlen += Ustrlen(big_buffer + newlen); | |
518 | } | |
519 | ||
520 | /* Find the true start of the physical line - leading spaces are always | |
521 | ignored. */ | |
522 | ||
523 | ss = big_buffer + len; | |
524 | while (isspace(*ss)) ss++; | |
525 | ||
526 | /* Process the physical line for macros. If this is the start of the logical | |
527 | line, skip over initial text at the start of the line if it starts with an | |
528 | upper case character followed by a sequence of name characters and an equals | |
529 | sign, because that is the definition of a new macro, and we don't do | |
530 | replacement therein. */ | |
531 | ||
532 | s = ss; | |
533 | if (len == 0 && isupper(*s)) | |
534 | { | |
535 | while (isalnum(*s) || *s == '_') s++; | |
536 | while (isspace(*s)) s++; | |
537 | if (*s != '=') s = ss; /* Not a macro definition */ | |
538 | } | |
539 | ||
540 | /* For each defined macro, scan the line (from after XXX= if present), | |
541 | replacing all occurrences of the macro. */ | |
542 | ||
543 | macro_found = FALSE; | |
544 | for (m = macros; m != NULL; m = m->next) | |
545 | { | |
546 | uschar *p, *pp; | |
547 | uschar *t = s; | |
548 | ||
549 | while ((p = Ustrstr(t, m->name)) != NULL) | |
550 | { | |
551 | int moveby; | |
552 | int namelen = Ustrlen(m->name); | |
553 | int replen = Ustrlen(m->replacement); | |
554 | ||
555 | /* Expand the buffer if necessary */ | |
556 | ||
557 | while (newlen - namelen + replen + 1 > big_buffer_size) | |
558 | { | |
559 | int newsize = big_buffer_size + BIG_BUFFER_SIZE; | |
560 | uschar *newbuffer = store_malloc(newsize); | |
561 | memcpy(newbuffer, big_buffer, newlen + 1); | |
562 | p = newbuffer + (p - big_buffer); | |
563 | s = newbuffer + (s - big_buffer); | |
564 | ss = newbuffer + (ss - big_buffer); | |
565 | t = newbuffer + (t - big_buffer); | |
566 | big_buffer_size = newsize; | |
567 | store_free(big_buffer); | |
568 | big_buffer = newbuffer; | |
569 | } | |
570 | ||
571 | /* Shuffle the remaining characters up or down in the buffer before | |
572 | copying in the replacement text. Don't rescan the replacement for this | |
573 | same macro. */ | |
574 | ||
575 | pp = p + namelen; | |
576 | moveby = replen - namelen; | |
577 | if (moveby != 0) | |
578 | { | |
579 | memmove(p + replen, pp, (big_buffer + newlen) - pp + 1); | |
580 | newlen += moveby; | |
581 | } | |
582 | Ustrncpy(p, m->replacement, replen); | |
583 | t = p + replen; | |
584 | macro_found = TRUE; | |
585 | } | |
586 | } | |
587 | ||
588 | /* An empty macro replacement at the start of a line could mean that ss no | |
589 | longer points to the first non-blank character. */ | |
590 | ||
591 | while (isspace(*ss)) ss++; | |
592 | ||
593 | /* Check for comment lines - these are physical lines. */ | |
594 | ||
595 | if (*ss == '#') continue; | |
596 | ||
597 | /* Handle conditionals, which are also applied to physical lines. Conditions | |
598 | are of the form ".ifdef ANYTEXT" and are treated as true if any macro | |
599 | expansion occured on the rest of the line. A preliminary test for the leading | |
600 | '.' saves effort on most lines. */ | |
601 | ||
602 | if (*ss == '.') | |
603 | { | |
604 | int i; | |
605 | ||
606 | /* Search the list of conditional directives */ | |
607 | ||
608 | for (i = 0; i < cond_list_size; i++) | |
609 | { | |
610 | int n; | |
611 | cond_item *c = cond_list+i; | |
612 | if (Ustrncmp(ss+1, c->name, c->namelen) != 0) continue; | |
613 | ||
614 | /* The following character must be white space or end of string */ | |
615 | ||
616 | n = ss[1 + c->namelen]; | |
617 | if (n != ' ' && n != 't' && n != '\n' && n != 0) break; | |
618 | ||
619 | /* .ifdef and .ifndef push the current state onto the stack, then set | |
620 | a new one from the table. Stack overflow is an error */ | |
621 | ||
622 | if (c->pushpop > 0) | |
623 | { | |
624 | if (cstate_stack_ptr >= CSTATE_STACK_SIZE - 1) | |
625 | log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, | |
626 | ".%s nested too deeply", c->name); | |
627 | cstate_stack[++cstate_stack_ptr] = cstate; | |
628 | cstate = next_cstate[cstate][macro_found? c->action1 : c->action2]; | |
629 | } | |
630 | ||
631 | /* For any of the others, stack underflow is an error. The next state | |
632 | comes either from the stack (.endif) or from the table. */ | |
633 | ||
634 | else | |
635 | { | |
636 | if (cstate_stack_ptr < 0) | |
637 | log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, | |
638 | ".%s without matching .ifdef", c->name); | |
639 | cstate = (c->pushpop < 0)? cstate_stack[cstate_stack_ptr--] : | |
640 | next_cstate[cstate][macro_found? c->action1 : c->action2]; | |
641 | } | |
642 | ||
643 | /* Having dealt with a directive, break the loop */ | |
644 | ||
645 | break; | |
646 | } | |
647 | ||
648 | /* If we have handled a conditional directive, continue with the next | |
649 | physical line. Otherwise, fall through. */ | |
650 | ||
651 | if (i < cond_list_size) continue; | |
652 | } | |
653 | ||
654 | /* If the conditional state is not 0 (actively using these lines), ignore | |
655 | this input line. */ | |
656 | ||
657 | if (cstate != 0) continue; /* Conditional skip */ | |
658 | ||
659 | /* Handle .include lines - these are also physical lines. */ | |
660 | ||
661 | if (Ustrncmp(ss, ".include", 8) == 0 && | |
662 | (isspace(ss[8]) || | |
663 | (Ustrncmp(ss+8, "_if_exists", 10) == 0 && isspace(ss[18])))) | |
664 | { | |
665 | uschar *t; | |
666 | int include_if_exists = isspace(ss[8])? 0 : 10; | |
667 | config_file_item *save; | |
668 | struct stat statbuf; | |
669 | ||
670 | ss += 9 + include_if_exists; | |
671 | while (isspace(*ss)) ss++; | |
672 | t = ss + Ustrlen(ss); | |
673 | while (t > ss && isspace(t[-1])) t--; | |
674 | if (*ss == '\"' && t[-1] == '\"') | |
675 | { | |
676 | ss++; | |
677 | t--; | |
678 | } | |
679 | *t = 0; | |
680 | ||
681 | if (include_if_exists != 0 && (Ustat(ss, &statbuf) != 0)) continue; | |
682 | ||
683 | save = store_get(sizeof(config_file_item)); | |
684 | save->next = config_file_stack; | |
685 | config_file_stack = save; | |
686 | save->file = config_file; | |
687 | save->filename = config_filename; | |
688 | save->lineno = config_lineno; | |
689 | ||
690 | config_file = Ufopen(ss, "rb"); | |
691 | if (config_file == NULL) | |
692 | log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "failed to open included " | |
693 | "configuration file %s", ss); | |
694 | config_filename = string_copy(ss); | |
695 | config_lineno = 0; | |
696 | continue; | |
697 | } | |
698 | ||
699 | /* If this is the start of the logical line, remember where the non-blank | |
700 | data starts. Otherwise shuffle down continuation lines to remove leading | |
701 | white space. */ | |
702 | ||
703 | if (len == 0) | |
704 | startoffset = ss - big_buffer; | |
705 | else | |
706 | { | |
707 | s = big_buffer + len; | |
708 | if (ss > s) | |
709 | { | |
710 | memmove(s, ss, (newlen - len) - (ss - s) + 1); | |
711 | newlen -= ss - s; | |
712 | } | |
713 | } | |
714 | ||
715 | /* Accept the new addition to the line. Remove trailing white space. */ | |
716 | ||
717 | len = newlen; | |
718 | while (len > 0 && isspace(big_buffer[len-1])) len--; | |
719 | big_buffer[len] = 0; | |
720 | ||
721 | /* We are done if the line does not end in backslash and contains some data. | |
722 | Empty logical lines are ignored. For continuations, remove the backslash and | |
723 | go round the loop to read the continuation line. */ | |
724 | ||
725 | if (len > 0) | |
726 | { | |
727 | if (big_buffer[len-1] != '\\') break; /* End of logical line */ | |
728 | big_buffer[--len] = 0; /* Remove backslash */ | |
729 | } | |
730 | } /* Loop for reading multiple physical lines */ | |
731 | ||
732 | /* We now have a logical line. Test for the end of a configuration section (or, | |
733 | more accurately, for the start of the next section). Place the name of the next | |
734 | section in next_section, and return NULL. If the name given is longer than | |
735 | next_section, truncate it. It will be unrecognized later, because all the known | |
736 | section names do fit. Leave space for pluralizing. */ | |
737 | ||
738 | s = big_buffer + startoffset; /* First non-space character */ | |
739 | if (strncmpic(s, US"begin ", 6) == 0) | |
740 | { | |
741 | s += 6; | |
742 | while (isspace(*s)) s++; | |
743 | if (big_buffer + len - s > sizeof(next_section) - 2) | |
744 | s[sizeof(next_section) - 2] = 0; | |
745 | Ustrcpy(next_section, s); | |
746 | return NULL; | |
747 | } | |
748 | ||
749 | /* Return the first non-blank character. */ | |
750 | ||
751 | return s; | |
752 | } | |
753 | ||
754 | ||
755 | ||
756 | /************************************************* | |
757 | * Read a name * | |
758 | *************************************************/ | |
759 | ||
760 | /* The yield is the pointer to the next uschar. Names longer than the | |
761 | output space are silently truncated. This function is also used from acl.c when | |
762 | parsing ACLs. | |
763 | ||
764 | Arguments: | |
765 | name where to put the name | |
766 | len length of name | |
767 | s input pointer | |
768 | ||
769 | Returns: new input pointer | |
770 | */ | |
771 | ||
772 | uschar * | |
773 | readconf_readname(uschar *name, int len, uschar *s) | |
774 | { | |
775 | int p = 0; | |
776 | while (isspace(*s)) s++; | |
777 | if (isalpha(*s)) | |
778 | { | |
779 | while (isalnum(*s) || *s == '_') | |
780 | { | |
781 | if (p < len-1) name[p++] = *s; | |
782 | s++; | |
783 | } | |
784 | } | |
785 | name[p] = 0; | |
786 | while (isspace(*s)) s++; | |
787 | return s; | |
788 | } | |
789 | ||
790 | ||
791 | ||
792 | ||
793 | /************************************************* | |
794 | * Read a time value * | |
795 | *************************************************/ | |
796 | ||
797 | /* This function is also called from outside, to read argument | |
798 | time values. The format of a time value is: | |
799 | ||
800 | [<n>w][<n>d][<n>h][<n>m][<n>s] | |
801 | ||
802 | as long as at least one is present. If a format error is encountered, | |
803 | return a negative value. The value must be terminated by the given | |
804 | terminator. | |
805 | ||
806 | Arguments: | |
807 | s input pointer | |
808 | terminator required terminating character | |
809 | return_msec if TRUE, allow fractional seconds and return milliseconds | |
810 | ||
811 | Returns: the time value, or -1 on syntax error | |
812 | value is seconds if return_msec is FALSE | |
813 | value is milliseconds if return_msec is TRUE | |
814 | */ | |
815 | ||
816 | int | |
817 | readconf_readtime(uschar *s, int terminator, BOOL return_msec) | |
818 | { | |
819 | int yield = 0; | |
820 | for (;;) | |
821 | { | |
822 | int value, count; | |
823 | double fraction; | |
824 | ||
825 | if (!isdigit(*s)) return -1; | |
826 | (void)sscanf(CS s, "%d%n", &value, &count); | |
827 | s += count; | |
828 | ||
829 | switch (*s) | |
830 | { | |
831 | case 'w': value *= 7; | |
832 | case 'd': value *= 24; | |
833 | case 'h': value *= 60; | |
834 | case 'm': value *= 60; | |
835 | case 's': s++; | |
836 | break; | |
837 | ||
838 | case '.': | |
839 | if (!return_msec) return -1; | |
840 | (void)sscanf(CS s, "%lf%n", &fraction, &count); | |
841 | s += count; | |
842 | if (*s++ != 's') return -1; | |
843 | yield += (int)(fraction * 1000.0); | |
844 | break; | |
845 | ||
846 | default: return -1; | |
847 | } | |
848 | ||
849 | if (return_msec) value *= 1000; | |
850 | yield += value; | |
851 | if (*s == terminator) return yield; | |
852 | } | |
853 | /* Control never reaches here. */ | |
854 | } | |
855 | ||
856 | ||
857 | ||
858 | /************************************************* | |
859 | * Read a fixed point value * | |
860 | *************************************************/ | |
861 | ||
862 | /* The value is returned *1000 | |
863 | ||
864 | Arguments: | |
865 | s input pointer | |
866 | terminator required terminator | |
867 | ||
868 | Returns: the value, or -1 on error | |
869 | */ | |
870 | ||
871 | static int | |
872 | readconf_readfixed(uschar *s, int terminator) | |
873 | { | |
874 | int yield = 0; | |
875 | int value, count; | |
876 | if (!isdigit(*s)) return -1; | |
877 | (void)sscanf(CS s, "%d%n", &value, &count); | |
878 | s += count; | |
879 | yield = value * 1000; | |
880 | if (*s == '.') | |
881 | { | |
882 | int m = 100; | |
883 | while (isdigit((*(++s)))) | |
884 | { | |
885 | yield += (*s - '0') * m; | |
886 | m /= 10; | |
887 | } | |
888 | } | |
889 | ||
890 | return (*s == terminator)? yield : (-1); | |
891 | } | |
892 | ||
893 | ||
894 | ||
895 | /************************************************* | |
896 | * Find option in list * | |
897 | *************************************************/ | |
898 | ||
899 | /* The lists are always in order, so binary chop can be used. | |
900 | ||
901 | Arguments: | |
902 | name the option name to search for | |
903 | ol the first entry in the option list | |
904 | last one more than the offset of the last entry in the option list | |
905 | ||
906 | Returns: pointer to an option entry, or NULL if not found | |
907 | */ | |
908 | ||
909 | static optionlist * | |
910 | find_option(uschar *name, optionlist *ol, int last) | |
911 | { | |
912 | int first = 0; | |
913 | while (last > first) | |
914 | { | |
915 | int middle = (first + last)/2; | |
916 | int c = Ustrcmp(name, ol[middle].name); | |
917 | if (c == 0) return ol + middle; | |
918 | else if (c > 0) first = middle + 1; | |
919 | else last = middle; | |
920 | } | |
921 | return NULL; | |
922 | } | |
923 | ||
924 | ||
925 | ||
926 | /************************************************* | |
927 | * Find a set flag in option list * | |
928 | *************************************************/ | |
929 | ||
930 | /* Because some versions of Unix make no restrictions on the values of uids and | |
931 | gids (even negative ones), we cannot represent "unset" by a special value. | |
932 | There is therefore a separate boolean variable for each one indicating whether | |
933 | a value is set or not. This function returns a pointer to the boolean, given | |
934 | the original option name. It is a major disaster if the flag cannot be found. | |
935 | ||
936 | Arguments: | |
937 | name the name of the uid or gid option | |
938 | oltop points to the start of the relevant option list | |
939 | last one more than the offset of the last item in the option list | |
940 | data_block NULL when reading main options => data values in the option | |
941 | list are absolute addresses; otherwise they are byte offsets | |
942 | in data_block (used for driver options) | |
943 | ||
944 | Returns: a pointer to the boolean flag. | |
945 | */ | |
946 | ||
947 | static BOOL * | |
948 | get_set_flag(uschar *name, optionlist *oltop, int last, void *data_block) | |
949 | { | |
950 | optionlist *ol; | |
951 | uschar name2[64]; | |
952 | sprintf(CS name2, "*set_%.50s", name); | |
953 | ol = find_option(name2, oltop, last); | |
954 | if (ol == NULL) log_write(0, LOG_MAIN|LOG_PANIC_DIE, | |
955 | "Exim internal error: missing set flag for %s", name); | |
956 | return (data_block == NULL)? (BOOL *)(ol->value) : | |
957 | (BOOL *)((uschar *)data_block + (long int)(ol->value)); | |
958 | } | |
959 | ||
960 | ||
961 | ||
962 | ||
963 | /************************************************* | |
964 | * Output extra characters message and die * | |
965 | *************************************************/ | |
966 | ||
967 | /* Called when an option line has junk on the end. Sometimes this is because | |
968 | the sysadmin thinks comments are permitted. | |
969 | ||
970 | Arguments: | |
971 | s points to the extra characters | |
972 | t1..t3 strings to insert in the log message | |
973 | ||
974 | Returns: doesn't return; dies | |
975 | */ | |
976 | ||
977 | static void | |
978 | extra_chars_error(uschar *s, uschar *t1, uschar *t2, uschar *t3) | |
979 | { | |
980 | uschar *comment = US""; | |
981 | if (*s == '#') comment = US" (# is comment only at line start)"; | |
982 | log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, | |
983 | "extra characters follow %s%s%s%s", t1, t2, t3, comment); | |
984 | } | |
985 | ||
986 | ||
987 | ||
988 | /************************************************* | |
989 | * Read rewrite information * | |
990 | *************************************************/ | |
991 | ||
992 | /* Each line of rewrite information contains: | |
993 | ||
994 | . A complete address in the form user@domain, possibly with | |
995 | leading * for each part; or alternatively, a regex. | |
996 | ||
997 | . A replacement string (which will be expanded). | |
998 | ||
999 | . An optional sequence of one-letter flags, indicating which | |
1000 | headers etc. to apply this rule to. | |
1001 | ||
1002 | All this is decoded and placed into a control block. The OR of the flags is | |
1003 | maintained in a common word. | |
1004 | ||
1005 | Arguments: | |
1006 | p points to the string that makes up the rule | |
1007 | existflags points to the overall flag word | |
1008 | isglobal TRUE if reading global rewrite rules | |
1009 | ||
1010 | Returns: the control block for the parsed rule. | |
1011 | */ | |
1012 | ||
1013 | static rewrite_rule * | |
1014 | readconf_one_rewrite(uschar *p, int *existflags, BOOL isglobal) | |
1015 | { | |
1016 | rewrite_rule *next = store_get(sizeof(rewrite_rule)); | |
1017 | ||
1018 | next->next = NULL; | |
1019 | next->key = string_dequote(&p); | |
1020 | ||
1021 | while (isspace(*p)) p++; | |
1022 | if (*p == 0) | |
1023 | log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, | |
1024 | "missing rewrite replacement string"); | |
1025 | ||
1026 | next->flags = 0; | |
1027 | next->replacement = string_dequote(&p); | |
1028 | ||
1029 | while (*p != 0) switch (*p++) | |
1030 | { | |
1031 | case ' ': case '\t': break; | |
1032 | ||
1033 | case 'q': next->flags |= rewrite_quit; break; | |
1034 | case 'w': next->flags |= rewrite_whole; break; | |
1035 | ||
1036 | case 'h': next->flags |= rewrite_all_headers; break; | |
1037 | case 's': next->flags |= rewrite_sender; break; | |
1038 | case 'f': next->flags |= rewrite_from; break; | |
1039 | case 't': next->flags |= rewrite_to; break; | |
1040 | case 'c': next->flags |= rewrite_cc; break; | |
1041 | case 'b': next->flags |= rewrite_bcc; break; | |
1042 | case 'r': next->flags |= rewrite_replyto; break; | |
1043 | ||
1044 | case 'E': next->flags |= rewrite_all_envelope; break; | |
1045 | case 'F': next->flags |= rewrite_envfrom; break; | |
1046 | case 'T': next->flags |= rewrite_envto; break; | |
1047 | ||
1048 | case 'Q': next->flags |= rewrite_qualify; break; | |
1049 | case 'R': next->flags |= rewrite_repeat; break; | |
1050 | ||
1051 | case 'S': | |
1052 | next->flags |= rewrite_smtp; | |
1053 | if (next->key[0] != '^' && Ustrncmp(next->key, "\\N^", 3) != 0) | |
1054 | log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, | |
1055 | "rewrite rule has the S flag but is not a regular expression"); | |
1056 | break; | |
1057 | ||
1058 | default: | |
1059 | log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, | |
1060 | "unknown rewrite flag character '%c' " | |
1061 | "(could be missing quotes round replacement item)", p[-1]); | |
1062 | break; | |
1063 | } | |
1064 | ||
1065 | /* If no action flags are set, set all the "normal" rewrites. */ | |
1066 | ||
1067 | if ((next->flags & (rewrite_all | rewrite_smtp)) == 0) | |
1068 | next->flags |= isglobal? rewrite_all : rewrite_all_headers; | |
1069 | ||
1070 | /* Remember which exist, for optimization, and return the rule */ | |
1071 | ||
1072 | *existflags |= next->flags; | |
1073 | return next; | |
1074 | } | |
1075 | ||
1076 | ||
1077 | ||
1078 | ||
1079 | /************************************************* | |
1080 | * Read global rewrite information * | |
1081 | *************************************************/ | |
1082 | ||
1083 | /* Each line is a single rewrite rule; it is parsed into a control block | |
1084 | by readconf_one_rewrite(), and its flags are ORed into the global flag | |
1085 | word rewrite_existflags. */ | |
1086 | ||
1087 | void | |
1088 | readconf_rewrites(void) | |
1089 | { | |
1090 | rewrite_rule **chain = &global_rewrite_rules; | |
1091 | uschar *p; | |
1092 | ||
1093 | while ((p = get_config_line()) != NULL) | |
1094 | { | |
1095 | rewrite_rule *next = readconf_one_rewrite(p, &rewrite_existflags, TRUE); | |
1096 | *chain = next; | |
1097 | chain = &(next->next); | |
1098 | } | |
1099 | } | |
1100 | ||
1101 | ||
1102 | ||
1103 | /************************************************* | |
1104 | * Read a string * | |
1105 | *************************************************/ | |
1106 | ||
1107 | /* Strings are read into the normal store pool. As long we aren't too | |
1108 | near the end of the current block, the string will just use what is necessary | |
1109 | on the top of the stacking pool, because string_cat() uses the extension | |
1110 | mechanism. | |
1111 | ||
1112 | Argument: | |
1113 | s the rest of the input line | |
1114 | name the option name (for errors) | |
1115 | ||
1116 | Returns: pointer to the string | |
1117 | */ | |
1118 | ||
1119 | static uschar * | |
1120 | read_string(uschar *s, uschar *name) | |
1121 | { | |
1122 | uschar *yield; | |
1123 | uschar *ss; | |
1124 | ||
1125 | if (*s != '\"') return string_copy(s); | |
1126 | ||
1127 | ss = s; | |
1128 | yield = string_dequote(&s); | |
1129 | ||
1130 | if (s == ss+1 || s[-1] != '\"') | |
1131 | log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, | |
1132 | "missing quote at end of string value for %s", name); | |
1133 | ||
1134 | if (*s != 0) extra_chars_error(s, US"string value for ", name, US""); | |
1135 | ||
1136 | return yield; | |
1137 | } | |
1138 | ||
1139 | ||
1140 | /************************************************* | |
1141 | * Handle option line * | |
1142 | *************************************************/ | |
1143 | ||
1144 | /* This function is called from several places to process a line containing the | |
1145 | setting of an option. The first argument is the line to be decoded; it has been | |
1146 | checked not to be empty and not to start with '#'. Trailing newlines and white | |
1147 | space have been removed. The second argument is a pointer to the list of | |
1148 | variable names that are to be recognized, together with their types and | |
1149 | locations, and the third argument gives the number of entries in the list. | |
1150 | ||
1151 | The fourth argument is a pointer to a data block. If it is NULL, then the data | |
1152 | values in the options list are absolute addresses. Otherwise, they are byte | |
1153 | offsets in the data block. | |
1154 | ||
1155 | String option data may continue onto several lines; this function reads further | |
1156 | data from config_file if necessary. | |
1157 | ||
1158 | The yield of this function is normally zero. If a string continues onto | |
1159 | multiple lines, then the data value is permitted to be followed by a comma | |
1160 | or a semicolon (for use in drivers) and the yield is that character. | |
1161 | ||
1162 | Arguments: | |
1163 | buffer contains the configuration line to be handled | |
1164 | oltop points to the start of the relevant option list | |
1165 | last one more than the offset of the last item in the option list | |
1166 | data_block NULL when reading main options => data values in the option | |
1167 | list are absolute addresses; otherwise they are byte offsets | |
1168 | in data_block when they have opt_public set; otherwise | |
1169 | they are byte offsets in data_block->options_block. | |
1170 | unknown_txt format string to use in panic message for unknown option; | |
1171 | must contain %s for option name | |
1172 | if given as NULL, don't panic on unknown option | |
1173 | ||
1174 | Returns: TRUE if an option was read successfully, | |
1175 | FALSE false for an unknown option if unknown_txt == NULL, | |
1176 | otherwise panic and die on an unknown option | |
1177 | */ | |
1178 | ||
1179 | static BOOL | |
1180 | readconf_handle_option(uschar *buffer, optionlist *oltop, int last, | |
1181 | void *data_block, uschar *unknown_txt) | |
1182 | { | |
1183 | int ptr = 0; | |
1184 | int offset = 0; | |
1185 | int n, count, type, value; | |
1186 | int issecure = 0; | |
1187 | uid_t uid; | |
1188 | gid_t gid; | |
1189 | BOOL boolvalue = TRUE; | |
1190 | BOOL freesptr = TRUE; | |
1191 | optionlist *ol, *ol2; | |
1192 | struct passwd *pw; | |
1193 | void *reset_point; | |
1194 | int intbase = 0; | |
1195 | uschar *inttype = US""; | |
1196 | uschar *sptr; | |
1197 | uschar *s = buffer; | |
1198 | uschar name[64]; | |
1199 | uschar name2[64]; | |
1200 | ||
1201 | /* There may be leading spaces; thereafter, we expect an option name starting | |
1202 | with a letter. */ | |
1203 | ||
1204 | while (isspace(*s)) s++; | |
1205 | if (!isalpha(*s)) | |
1206 | log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "option setting expected: %s", s); | |
1207 | ||
1208 | /* Read the name of the option, and skip any subsequent white space. If | |
1209 | it turns out that what we read was "hide", set the flag indicating that | |
1210 | this is a secure option, and loop to read the next word. */ | |
1211 | ||
1212 | for (n = 0; n < 2; n++) | |
1213 | { | |
1214 | while (isalnum(*s) || *s == '_') | |
1215 | { | |
1216 | if (ptr < sizeof(name)-1) name[ptr++] = *s; | |
1217 | s++; | |
1218 | } | |
1219 | name[ptr] = 0; | |
1220 | while (isspace(*s)) s++; | |
1221 | if (Ustrcmp(name, "hide") != 0) break; | |
1222 | issecure = opt_secure; | |
1223 | ptr = 0; | |
1224 | } | |
1225 | ||
1226 | /* Deal with "no_" or "not_" here for booleans */ | |
1227 | ||
1228 | if (Ustrncmp(name, "no_", 3) == 0) | |
1229 | { | |
1230 | boolvalue = FALSE; | |
1231 | offset = 3; | |
1232 | } | |
1233 | ||
1234 | if (Ustrncmp(name, "not_", 4) == 0) | |
1235 | { | |
1236 | boolvalue = FALSE; | |
1237 | offset = 4; | |
1238 | } | |
1239 | ||
1240 | /* Search the list for the given name. A non-existent name, or an option that | |
1241 | is set twice, is a disaster. */ | |
1242 | ||
1243 | ol = find_option(name + offset, oltop, last); | |
1244 | ||
1245 | if (ol == NULL) | |
1246 | { | |
1247 | if (unknown_txt == NULL) return FALSE; | |
1248 | log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, CS unknown_txt, name); | |
1249 | } | |
1250 | ||
1251 | if ((ol->type & opt_set) != 0) | |
1252 | { | |
1253 | uschar *mname = name; | |
1254 | if (Ustrncmp(mname, "no_", 3) == 0) mname += 3; | |
1255 | log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, | |
1256 | "\"%s\" option set for the second time", mname); | |
1257 | } | |
1258 | ||
1259 | ol->type |= opt_set | issecure; | |
1260 | type = ol->type & opt_mask; | |
1261 | ||
1262 | /* Types with data values must be followed by '='; the "no[t]_" prefix | |
1263 | applies only to boolean values. */ | |
1264 | ||
1265 | if (type < opt_bool || type > opt_bool_last) | |
1266 | { | |
1267 | if (offset != 0) | |
1268 | log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, | |
1269 | "negation prefix applied to a non-boolean option"); | |
1270 | if (*s == 0) | |
1271 | log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, | |
1272 | "unexpected end of line (data missing) after %s", name); | |
1273 | if (*s != '=') | |
1274 | log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "missing \"=\" after %s", name); | |
1275 | } | |
1276 | ||
1277 | /* If a boolean wasn't preceded by "no[t]_" it can be followed by = and | |
1278 | true/false/yes/no, or, in the case of opt_expanded_bool, a general string that | |
1279 | ultimately expands to one of those values. */ | |
1280 | ||
1281 | else if (*s != 0 && (offset != 0 || *s != '=')) | |
1282 | extra_chars_error(s, US"boolean option ", name, US""); | |
1283 | ||
1284 | /* Skip white space after = */ | |
1285 | ||
1286 | if (*s == '=') while (isspace((*(++s)))); | |
1287 | ||
1288 | /* If there is a data block and the opt_public flag is not set, change | |
1289 | the data block pointer to the private options block. */ | |
1290 | ||
1291 | if (data_block != NULL && (ol->type & opt_public) == 0) | |
1292 | data_block = (void *)(((driver_instance *)data_block)->options_block); | |
1293 | ||
1294 | /* Now get the data according to the type. */ | |
1295 | ||
1296 | switch (type) | |
1297 | { | |
1298 | /* If a string value is not enclosed in quotes, it consists of | |
1299 | the rest of the current line, verbatim. Otherwise, string escapes | |
1300 | are processed. | |
1301 | ||
1302 | A transport is specified as a string, which is then looked up in the | |
1303 | list of transports. A search type is specified as one of a number of | |
1304 | known strings. | |
1305 | ||
1306 | A set or rewrite rules for a driver is specified as a string, which is | |
1307 | then parsed into a suitable chain of control blocks. | |
1308 | ||
1309 | Uids and gids are specified as strings which are then looked up in the | |
1310 | passwd file. Lists of uids and gids are similarly specified as colon- | |
1311 | separated strings. */ | |
1312 | ||
1313 | case opt_stringptr: | |
1314 | case opt_uid: | |
1315 | case opt_gid: | |
1316 | case opt_expand_uid: | |
1317 | case opt_expand_gid: | |
1318 | case opt_uidlist: | |
1319 | case opt_gidlist: | |
1320 | case opt_rewrite: | |
1321 | ||
1322 | reset_point = sptr = read_string(s, name); | |
1323 | ||
1324 | /* Having read a string, we now have several different ways of using it, | |
1325 | depending on the data type, so do another switch. If keeping the actual | |
1326 | string is not required (because it is interpreted), freesptr is set TRUE, | |
1327 | and at the end we reset the pool. */ | |
1328 | ||
1329 | switch (type) | |
1330 | { | |
1331 | /* If this was a string, set the variable to point to the new string, | |
1332 | and set the flag so its store isn't reclaimed. If it was a list of rewrite | |
1333 | rules, we still keep the string (for printing), and parse the rules into a | |
1334 | control block and flags word. */ | |
1335 | ||
1336 | case opt_stringptr: | |
1337 | case opt_rewrite: | |
1338 | if (data_block == NULL) | |
1339 | *((uschar **)(ol->value)) = sptr; | |
1340 | else | |
1341 | *((uschar **)((uschar *)data_block + (long int)(ol->value))) = sptr; | |
1342 | freesptr = FALSE; | |
1343 | if (type == opt_rewrite) | |
1344 | { | |
1345 | int sep = 0; | |
1346 | int *flagptr; | |
1347 | uschar *p = sptr; | |
1348 | rewrite_rule **chain; | |
1349 | optionlist *ol3; | |
1350 | ||
1351 | sprintf(CS name2, "*%.50s_rules", name); | |
1352 | ol2 = find_option(name2, oltop, last); | |
1353 | sprintf(CS name2, "*%.50s_flags", name); | |
1354 | ol3 = find_option(name2, oltop, last); | |
1355 | ||
1356 | if (ol2 == NULL || ol3 == NULL) | |
1357 | log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, | |
1358 | "rewrite rules not available for driver"); | |
1359 | ||
1360 | if (data_block == NULL) | |
1361 | { | |
1362 | chain = (rewrite_rule **)(ol2->value); | |
1363 | flagptr = (int *)(ol3->value); | |
1364 | } | |
1365 | else | |
1366 | { | |
1367 | chain = (rewrite_rule **)((uschar *)data_block + (long int)(ol2->value)); | |
1368 | flagptr = (int *)((uschar *)data_block + (long int)(ol3->value)); | |
1369 | } | |
1370 | ||
1371 | while ((p = string_nextinlist(&sptr, &sep, big_buffer, BIG_BUFFER_SIZE)) | |
1372 | != NULL) | |
1373 | { | |
1374 | rewrite_rule *next = readconf_one_rewrite(p, flagptr, FALSE); | |
1375 | *chain = next; | |
1376 | chain = &(next->next); | |
1377 | } | |
1378 | ||
1379 | if ((*flagptr & (rewrite_all_envelope | rewrite_smtp)) != 0) | |
1380 | log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "rewrite rule specifies a " | |
1381 | "non-header rewrite - not allowed at transport time -"); | |
1382 | } | |
1383 | break; | |
1384 | ||
1385 | /* If it was an expanded uid, see if there is any expansion to be | |
1386 | done by checking for the presence of a $ character. If there is, save it | |
1387 | in the corresponding *expand_user option field. Otherwise, fall through | |
1388 | to treat it as a fixed uid. Ensure mutual exclusivity of the two kinds | |
1389 | of data. */ | |
1390 | ||
1391 | case opt_expand_uid: | |
1392 | sprintf(CS name2, "*expand_%.50s", name); | |
1393 | ol2 = find_option(name2, oltop, last); | |
1394 | if (ol2 != NULL) | |
1395 | { | |
1396 | uschar *ss = (Ustrchr(sptr, '$') != NULL)? sptr : NULL; | |
1397 | ||
1398 | if (data_block == NULL) | |
1399 | *((uschar **)(ol2->value)) = ss; | |
1400 | else | |
1401 | *((uschar **)((uschar *)data_block + (long int)(ol2->value))) = ss; | |
1402 | ||
1403 | if (ss != NULL) | |
1404 | { | |
1405 | *(get_set_flag(name, oltop, last, data_block)) = FALSE; | |
1406 | freesptr = FALSE; | |
1407 | break; | |
1408 | } | |
1409 | } | |
1410 | ||
1411 | /* Look up a fixed uid, and also make use of the corresponding gid | |
1412 | if a passwd entry is returned and the gid has not been set. */ | |
1413 | ||
1414 | case opt_uid: | |
1415 | if (!route_finduser(sptr, &pw, &uid)) | |
1416 | log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "user %s was not found", sptr); | |
1417 | if (data_block == NULL) | |
1418 | *((uid_t *)(ol->value)) = uid; | |
1419 | else | |
1420 | *((uid_t *)((uschar *)data_block + (long int)(ol->value))) = uid; | |
1421 | ||
1422 | /* Set the flag indicating a fixed value is set */ | |
1423 | ||
1424 | *(get_set_flag(name, oltop, last, data_block)) = TRUE; | |
1425 | ||
1426 | /* Handle matching gid if we have a passwd entry: done by finding the | |
1427 | same name with terminating "user" changed to "group"; if not found, | |
1428 | ignore. Also ignore if the value is already set. */ | |
1429 | ||
1430 | if (pw == NULL) break; | |
1431 | Ustrcpy(name+Ustrlen(name)-4, "group"); | |
1432 | ol2 = find_option(name, oltop, last); | |
1433 | if (ol2 != NULL && ((ol2->type & opt_mask) == opt_gid || | |
1434 | (ol2->type & opt_mask) == opt_expand_gid)) | |
1435 | { | |
1436 | BOOL *set_flag = get_set_flag(name, oltop, last, data_block); | |
1437 | if (! *set_flag) | |
1438 | { | |
1439 | if (data_block == NULL) | |
1440 | *((gid_t *)(ol2->value)) = pw->pw_gid; | |
1441 | else | |
1442 | *((gid_t *)((uschar *)data_block + (long int)(ol2->value))) = pw->pw_gid; | |
1443 | *set_flag = TRUE; | |
1444 | } | |
1445 | } | |
1446 | break; | |
1447 | ||
1448 | /* If it was an expanded gid, see if there is any expansion to be | |
1449 | done by checking for the presence of a $ character. If there is, save it | |
1450 | in the corresponding *expand_user option field. Otherwise, fall through | |
1451 | to treat it as a fixed gid. Ensure mutual exclusivity of the two kinds | |
1452 | of data. */ | |
1453 | ||
1454 | case opt_expand_gid: | |
1455 | sprintf(CS name2, "*expand_%.50s", name); | |
1456 | ol2 = find_option(name2, oltop, last); | |
1457 | if (ol2 != NULL) | |
1458 | { | |
1459 | uschar *ss = (Ustrchr(sptr, '$') != NULL)? sptr : NULL; | |
1460 | ||
1461 | if (data_block == NULL) | |
1462 | *((uschar **)(ol2->value)) = ss; | |
1463 | else | |
1464 | *((uschar **)((uschar *)data_block + (long int)(ol2->value))) = ss; | |
1465 | ||
1466 | if (ss != NULL) | |
1467 | { | |
1468 | *(get_set_flag(name, oltop, last, data_block)) = FALSE; | |
1469 | freesptr = FALSE; | |
1470 | break; | |
1471 | } | |
1472 | } | |
1473 | ||
1474 | /* Handle freestanding gid */ | |
1475 | ||
1476 | case opt_gid: | |
1477 | if (!route_findgroup(sptr, &gid)) | |
1478 | log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "group %s was not found", sptr); | |
1479 | if (data_block == NULL) | |
1480 | *((gid_t *)(ol->value)) = gid; | |
1481 | else | |
1482 | *((gid_t *)((uschar *)data_block + (long int)(ol->value))) = gid; | |
1483 | *(get_set_flag(name, oltop, last, data_block)) = TRUE; | |
1484 | break; | |
1485 | ||
1486 | /* If it was a uid list, look up each individual entry, and build | |
1487 | a vector of uids, with a count in the first element. Put the vector | |
1488 | in malloc store so we can free the string. (We are reading into | |
1489 | permanent store already.) */ | |
1490 | ||
1491 | case opt_uidlist: | |
1492 | { | |
1493 | int count = 1; | |
1494 | uid_t *list; | |
1495 | int ptr = 0; | |
1496 | uschar *p = sptr; | |
1497 | ||
1498 | if (*p != 0) count++; | |
1499 | while (*p != 0) if (*p++ == ':') count++; | |
1500 | list = store_malloc(count*sizeof(uid_t)); | |
1501 | list[ptr++] = (uid_t)(count - 1); | |
1502 | ||
1503 | if (data_block == NULL) | |
1504 | *((uid_t **)(ol->value)) = list; | |
1505 | else | |
1506 | *((uid_t **)((uschar *)data_block + (long int)(ol->value))) = list; | |
1507 | ||
1508 | p = sptr; | |
1509 | while (count-- > 1) | |
1510 | { | |
1511 | int sep = 0; | |
1512 | (void)string_nextinlist(&p, &sep, big_buffer, BIG_BUFFER_SIZE); | |
1513 | if (!route_finduser(big_buffer, NULL, &uid)) | |
1514 | log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "user %s was not found", | |
1515 | big_buffer); | |
1516 | list[ptr++] = uid; | |
1517 | } | |
1518 | } | |
1519 | break; | |
1520 | ||
1521 | /* If it was a gid list, look up each individual entry, and build | |
1522 | a vector of gids, with a count in the first element. Put the vector | |
1523 | in malloc store so we can free the string. (We are reading into permanent | |
1524 | store already.) */ | |
1525 | ||
1526 | case opt_gidlist: | |
1527 | { | |
1528 | int count = 1; | |
1529 | gid_t *list; | |
1530 | int ptr = 0; | |
1531 | uschar *p = sptr; | |
1532 | ||
1533 | if (*p != 0) count++; | |
1534 | while (*p != 0) if (*p++ == ':') count++; | |
1535 | list = store_malloc(count*sizeof(gid_t)); | |
1536 | list[ptr++] = (gid_t)(count - 1); | |
1537 | ||
1538 | if (data_block == NULL) | |
1539 | *((gid_t **)(ol->value)) = list; | |
1540 | else | |
1541 | *((gid_t **)((uschar *)data_block + (long int)(ol->value))) = list; | |
1542 | ||
1543 | p = sptr; | |
1544 | while (count-- > 1) | |
1545 | { | |
1546 | int sep = 0; | |
1547 | (void)string_nextinlist(&p, &sep, big_buffer, BIG_BUFFER_SIZE); | |
1548 | if (!route_findgroup(big_buffer, &gid)) | |
1549 | log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "group %s was not found", | |
1550 | big_buffer); | |
1551 | list[ptr++] = gid; | |
1552 | } | |
1553 | } | |
1554 | break; | |
1555 | } | |
1556 | ||
1557 | /* Release store if the value of the string doesn't need to be kept. */ | |
1558 | ||
1559 | if (freesptr) store_reset(reset_point); | |
1560 | break; | |
1561 | ||
1562 | /* Expanded boolean: if no characters follow, or if there are no dollar | |
1563 | characters, this is a fixed-valued boolean, and we fall through. Otherwise, | |
1564 | save the string for later expansion in the alternate place. */ | |
1565 | ||
1566 | case opt_expand_bool: | |
1567 | if (*s != 0 && Ustrchr(s, '$') != 0) | |
1568 | { | |
1569 | sprintf(CS name2, "*expand_%.50s", name); | |
1570 | ol2 = find_option(name2, oltop, last); | |
1571 | if (ol2 != NULL) | |
1572 | { | |
1573 | reset_point = sptr = read_string(s, name); | |
1574 | if (data_block == NULL) | |
1575 | *((uschar **)(ol2->value)) = sptr; | |
1576 | else | |
1577 | *((uschar **)((uschar *)data_block + (long int)(ol2->value))) = sptr; | |
1578 | freesptr = FALSE; | |
1579 | break; | |
1580 | } | |
1581 | } | |
1582 | /* Fall through */ | |
1583 | ||
1584 | /* Boolean: if no characters follow, the value is boolvalue. Otherwise | |
1585 | look for yes/not/true/false. Some booleans are stored in a single bit in | |
1586 | a single int. There's a special fudge for verify settings; without a suffix | |
1587 | they set both xx_sender and xx_recipient. The table points to the sender | |
1588 | value; search subsequently for the recipient. There's another special case: | |
1589 | opt_bool_set also notes when a boolean has been set. */ | |
1590 | ||
1591 | case opt_bool: | |
1592 | case opt_bit: | |
1593 | case opt_bool_verify: | |
1594 | case opt_bool_set: | |
1595 | if (*s != 0) | |
1596 | { | |
1597 | s = readconf_readname(name2, 64, s); | |
1598 | if (strcmpic(name2, US"true") == 0 || strcmpic(name2, US"yes") == 0) | |
1599 | boolvalue = TRUE; | |
1600 | else if (strcmpic(name2, US"false") == 0 || strcmpic(name2, US"no") == 0) | |
1601 | boolvalue = FALSE; | |
1602 | else log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, | |
1603 | "\"%s\" is not a valid value for the \"%s\" option", name2, name); | |
1604 | if (*s != 0) extra_chars_error(s, string_sprintf("\"%s\" ", name2), | |
1605 | US"for boolean option ", name); | |
1606 | } | |
1607 | ||
1608 | /* Handle single-bit type. */ | |
1609 | ||
1610 | if (type == opt_bit) | |
1611 | { | |
1612 | int bit = 1 << ((ol->type >> 16) & 31); | |
1613 | int *ptr = (data_block == NULL)? | |
1614 | (int *)(ol->value) : | |
1615 | (int *)((uschar *)data_block + (long int)ol->value); | |
1616 | if (boolvalue) *ptr |= bit; else *ptr &= ~bit; | |
1617 | break; | |
1618 | } | |
1619 | ||
1620 | /* Handle full BOOL types */ | |
1621 | ||
1622 | if (data_block == NULL) | |
1623 | *((BOOL *)(ol->value)) = boolvalue; | |
1624 | else | |
1625 | *((BOOL *)((uschar *)data_block + (long int)(ol->value))) = boolvalue; | |
1626 | ||
1627 | /* Verify fudge */ | |
1628 | ||
1629 | if (type == opt_bool_verify) | |
1630 | { | |
1631 | sprintf(CS name2, "%.50s_recipient", name + offset); | |
1632 | ol2 = find_option(name2, oltop, last); | |
1633 | if (ol2 != NULL) | |
1634 | { | |
1635 | if (data_block == NULL) | |
1636 | *((BOOL *)(ol2->value)) = boolvalue; | |
1637 | else | |
1638 | *((BOOL *)((uschar *)data_block + (long int)(ol2->value))) = boolvalue; | |
1639 | } | |
1640 | } | |
1641 | ||
1642 | /* Note that opt_bool_set type is set, if there is somewhere to do so */ | |
1643 | ||
1644 | else if (type == opt_bool_set) | |
1645 | { | |
1646 | sprintf(CS name2, "*set_%.50s", name + offset); | |
1647 | ol2 = find_option(name2, oltop, last); | |
1648 | if (ol2 != NULL) | |
1649 | { | |
1650 | if (data_block == NULL) | |
1651 | *((BOOL *)(ol2->value)) = TRUE; | |
1652 | else | |
1653 | *((BOOL *)((uschar *)data_block + (long int)(ol2->value))) = TRUE; | |
1654 | } | |
1655 | } | |
1656 | break; | |
1657 | ||
1658 | /* Octal integer */ | |
1659 | ||
1660 | case opt_octint: | |
1661 | intbase = 8; | |
1662 | inttype = US"octal "; | |
1663 | ||
1664 | /* Integer: a simple(ish) case; allow octal and hex formats, and | |
1665 | suffixes K and M. The different types affect output, not input. */ | |
1666 | ||
1667 | case opt_mkint: | |
1668 | case opt_int: | |
1669 | { | |
1670 | uschar *endptr; | |
1671 | errno = 0; | |
1672 | value = strtol(CS s, CSS &endptr, intbase); | |
1673 | ||
1674 | if (endptr == s) | |
1675 | log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "%sinteger expected for %s", | |
1676 | inttype, name); | |
1677 | ||
1678 | if (errno != ERANGE) | |
1679 | { | |
1680 | if (tolower(*endptr) == 'k') | |
1681 | { | |
1682 | if (value > INT_MAX/1024 || value < INT_MIN/1024) errno = ERANGE; | |
1683 | else value *= 1024; | |
1684 | endptr++; | |
1685 | } | |
1686 | else if (tolower(*endptr) == 'm') | |
1687 | { | |
1688 | if (value > INT_MAX/(1024*1024) || value < INT_MIN/(1024*1024)) | |
1689 | errno = ERANGE; | |
1690 | else value *= 1024*1024; | |
1691 | endptr++; | |
1692 | } | |
1693 | } | |
1694 | ||
1695 | if (errno == ERANGE) log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, | |
1696 | "absolute value of integer \"%s\" is too large (overflow)", s); | |
1697 | ||
1698 | while (isspace(*endptr)) endptr++; | |
1699 | if (*endptr != 0) | |
1700 | extra_chars_error(endptr, inttype, US"integer value for ", name); | |
1701 | } | |
1702 | ||
1703 | if (data_block == NULL) | |
1704 | *((int *)(ol->value)) = value; | |
1705 | else | |
1706 | *((int *)((uschar *)data_block + (long int)(ol->value))) = value; | |
1707 | break; | |
1708 | ||
1709 | /* Integer held in K: again, allow octal and hex formats, and suffixes K and | |
1710 | M. */ | |
1711 | ||
1712 | case opt_Kint: | |
1713 | { | |
1714 | uschar *endptr; | |
1715 | errno = 0; | |
1716 | value = strtol(CS s, CSS &endptr, intbase); | |
1717 | ||
1718 | if (endptr == s) | |
1719 | log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "%sinteger expected for %s", | |
1720 | inttype, name); | |
1721 | ||
1722 | if (errno != ERANGE) | |
1723 | { | |
1724 | if (tolower(*endptr) == 'm') | |
1725 | { | |
1726 | if (value > INT_MAX/1024 || value < INT_MIN/1024) errno = ERANGE; | |
1727 | else value *= 1024; | |
1728 | endptr++; | |
1729 | } | |
1730 | else if (tolower(*endptr) == 'k') | |
1731 | { | |
1732 | endptr++; | |
1733 | } | |
1734 | else | |
1735 | { | |
1736 | value = (value + 512)/1024; | |
1737 | } | |
1738 | } | |
1739 | ||
1740 | if (errno == ERANGE) log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, | |
1741 | "absolute value of integer \"%s\" is too large (overflow)", s); | |
1742 | ||
1743 | while (isspace(*endptr)) endptr++; | |
1744 | if (*endptr != 0) | |
1745 | extra_chars_error(endptr, inttype, US"integer value for ", name); | |
1746 | } | |
1747 | ||
1748 | if (data_block == NULL) | |
1749 | *((int *)(ol->value)) = value; | |
1750 | else | |
1751 | *((int *)((uschar *)data_block + (long int)(ol->value))) = value; | |
1752 | break; | |
1753 | ||
1754 | /* Fixed-point number: held to 3 decimal places. */ | |
1755 | ||
1756 | case opt_fixed: | |
1757 | if (sscanf(CS s, "%d%n", &value, &count) != 1) | |
1758 | log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, | |
1759 | "fixed-point number expected for %s", name); | |
1760 | ||
1761 | if (value < 0) log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, | |
1762 | "integer \"%s\" is too large (overflow)", s); | |
1763 | ||
1764 | value *= 1000; | |
1765 | ||
1766 | if (value < 0) log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, | |
1767 | "integer \"%s\" is too large (overflow)", s); | |
1768 | ||
1769 | if (s[count] == '.') | |
1770 | { | |
1771 | int d = 100; | |
1772 | while (isdigit(s[++count])) | |
1773 | { | |
1774 | value += (s[count] - '0') * d; | |
1775 | d /= 10; | |
1776 | } | |
1777 | } | |
1778 | ||
1779 | while (isspace(s[count])) count++; | |
1780 | ||
1781 | if (s[count] != 0) | |
1782 | extra_chars_error(s+count, US"fixed-point value for ", name, US""); | |
1783 | ||
1784 | if (data_block == NULL) | |
1785 | *((int *)(ol->value)) = value; | |
1786 | else | |
1787 | *((int *)((uschar *)data_block + (long int)(ol->value))) = value; | |
1788 | break; | |
1789 | ||
1790 | /* There's a special routine to read time values. */ | |
1791 | ||
1792 | case opt_time: | |
1793 | value = readconf_readtime(s, 0, FALSE); | |
1794 | if (value < 0) | |
1795 | log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "invalid time value for %s", | |
1796 | name); | |
1797 | if (data_block == NULL) | |
1798 | *((int *)(ol->value)) = value; | |
1799 | else | |
1800 | *((int *)((uschar *)data_block + (long int)(ol->value))) = value; | |
1801 | break; | |
1802 | ||
1803 | /* A time list is a list of colon-separated times, with the first | |
1804 | element holding the size of the list and the second the number of | |
1805 | entries used. */ | |
1806 | ||
1807 | case opt_timelist: | |
1808 | { | |
1809 | int count = 0; | |
1810 | int *list = (data_block == NULL)? | |
1811 | (int *)(ol->value) : | |
1812 | (int *)((uschar *)data_block + (long int)(ol->value)); | |
1813 | ||
1814 | if (*s != 0) for (count = 1; count <= list[0] - 2; count++) | |
1815 | { | |
1816 | int terminator = 0; | |
1817 | uschar *snext = Ustrchr(s, ':'); | |
1818 | if (snext != NULL) | |
1819 | { | |
1820 | uschar *ss = snext; | |
1821 | while (ss > s && isspace(ss[-1])) ss--; | |
1822 | terminator = *ss; | |
1823 | } | |
1824 | value = readconf_readtime(s, terminator, FALSE); | |
1825 | if (value < 0) | |
1826 | log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "invalid time value for %s", | |
1827 | name); | |
1828 | if (count > 1 && value <= list[count]) | |
1829 | log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, | |
1830 | "time value out of order for %s", name); | |
1831 | list[count+1] = value; | |
1832 | if (snext == NULL) break; | |
1833 | s = snext + 1; | |
1834 | while (isspace(*s)) s++; | |
1835 | } | |
1836 | ||
1837 | if (count > list[0] - 2) | |
1838 | log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "too many time values for %s", | |
1839 | name); | |
1840 | if (count > 0 && list[2] == 0) count = 0; | |
1841 | list[1] = count; | |
1842 | } | |
1843 | ||
1844 | break; | |
1845 | } | |
1846 | ||
1847 | return TRUE; | |
1848 | } | |
1849 | ||
1850 | ||
1851 | ||
1852 | /************************************************* | |
1853 | * Print a time value * | |
1854 | *************************************************/ | |
1855 | ||
1856 | /* | |
1857 | Argument: a time value in seconds | |
1858 | Returns: pointer to a fixed buffer containing the time as a string, | |
1859 | in readconf_readtime() format | |
1860 | */ | |
1861 | ||
1862 | uschar * | |
1863 | readconf_printtime(int t) | |
1864 | { | |
1865 | int s, m, h, d, w; | |
1866 | uschar *p = time_buffer; | |
1867 | ||
1868 | s = t % 60; | |
1869 | t /= 60; | |
1870 | m = t % 60; | |
1871 | t /= 60; | |
1872 | h = t % 24; | |
1873 | t /= 24; | |
1874 | d = t % 7; | |
1875 | w = t/7; | |
1876 | ||
1877 | if (w > 0) { sprintf(CS p, "%dw", w); while (*p) p++; } | |
1878 | if (d > 0) { sprintf(CS p, "%dd", d); while (*p) p++; } | |
1879 | if (h > 0) { sprintf(CS p, "%dh", h); while (*p) p++; } | |
1880 | if (m > 0) { sprintf(CS p, "%dm", m); while (*p) p++; } | |
1881 | if (s > 0 || p == time_buffer) sprintf(CS p, "%ds", s); | |
1882 | ||
1883 | return time_buffer; | |
1884 | } | |
1885 | ||
1886 | ||
1887 | ||
1888 | /************************************************* | |
1889 | * Print an individual option value * | |
1890 | *************************************************/ | |
1891 | ||
1892 | /* This is used by the -bP option, so prints to the standard output. | |
1893 | The entire options list is passed in as an argument, because some options come | |
1894 | in pairs - typically uid/gid settings, which can either be explicit numerical | |
1895 | values, or strings to be expanded later. If the numerical value is unset, | |
1896 | search for "*expand_<name>" to see if there is a string equivalent. | |
1897 | ||
1898 | Arguments: | |
1899 | ol option entry, or NULL for an unknown option | |
1900 | name option name | |
1901 | options_block NULL for main configuration options; otherwise points to | |
1902 | a driver block; if the option doesn't have opt_public | |
1903 | set, then options_block->options_block is where the item | |
1904 | resides. | |
1905 | oltop points to the option list in which ol exists | |
1906 | last one more than the offset of the last entry in optop | |
1907 | ||
1908 | Returns: nothing | |
1909 | */ | |
1910 | ||
1911 | static void | |
1912 | print_ol(optionlist *ol, uschar *name, void *options_block, | |
1913 | optionlist *oltop, int last) | |
1914 | { | |
1915 | struct passwd *pw; | |
1916 | struct group *gr; | |
1917 | optionlist *ol2; | |
1918 | void *value; | |
1919 | uid_t *uidlist; | |
1920 | gid_t *gidlist; | |
1921 | uschar *s; | |
1922 | uschar name2[64]; | |
1923 | ||
1924 | if (ol == NULL) | |
1925 | { | |
1926 | printf("%s is not a known option\n", name); | |
1927 | return; | |
1928 | } | |
1929 | ||
1930 | /* Non-admin callers cannot see options that have been flagged secure by the | |
1931 | "hide" prefix. */ | |
1932 | ||
1933 | if (!admin_user && (ol->type & opt_secure) != 0) | |
1934 | { | |
1935 | printf("%s = <value not displayable>\n", name); | |
1936 | return; | |
1937 | } | |
1938 | ||
1939 | /* Else show the value of the option */ | |
1940 | ||
1941 | value = ol->value; | |
1942 | if (options_block != NULL) | |
1943 | { | |
1944 | if ((ol->type & opt_public) == 0) | |
1945 | options_block = (void *)(((driver_instance *)options_block)->options_block); | |
1946 | value = (void *)((uschar *)options_block + (long int)value); | |
1947 | } | |
1948 | ||
1949 | switch(ol->type & opt_mask) | |
1950 | { | |
1951 | case opt_stringptr: | |
1952 | case opt_rewrite: /* Show the text value */ | |
1953 | s = *((uschar **)value); | |
1954 | printf("%s = %s\n", name, (s == NULL)? US"" : string_printing2(s, FALSE)); | |
1955 | break; | |
1956 | ||
1957 | case opt_int: | |
1958 | printf("%s = %d\n", name, *((int *)value)); | |
1959 | break; | |
1960 | ||
1961 | case opt_mkint: | |
1962 | { | |
1963 | int x = *((int *)value); | |
1964 | if (x != 0 && (x & 1023) == 0) | |
1965 | { | |
1966 | int c = 'K'; | |
1967 | x >>= 10; | |
1968 | if ((x & 1023) == 0) | |
1969 | { | |
1970 | c = 'M'; | |
1971 | x >>= 10; | |
1972 | } | |
1973 | printf("%s = %d%c\n", name, x, c); | |
1974 | } | |
1975 | else printf("%s = %d\n", name, x); | |
1976 | } | |
1977 | break; | |
1978 | ||
1979 | case opt_Kint: | |
1980 | { | |
1981 | int x = *((int *)value); | |
1982 | if (x == 0) printf("%s = 0\n", name); | |
1983 | else if ((x & 1023) == 0) printf("%s = %dM\n", name, x >> 10); | |
1984 | else printf("%s = %dK\n", name, x); | |
1985 | } | |
1986 | break; | |
1987 | ||
1988 | case opt_octint: | |
1989 | printf("%s = %#o\n", name, *((int *)value)); | |
1990 | break; | |
1991 | ||
1992 | /* Can be negative only when "unset", in which case integer */ | |
1993 | ||
1994 | case opt_fixed: | |
1995 | { | |
1996 | int x = *((int *)value); | |
1997 | int f = x % 1000; | |
1998 | int d = 100; | |
1999 | if (x < 0) printf("%s =\n", name); else | |
2000 | { | |
2001 | printf("%s = %d.", name, x/1000); | |
2002 | do | |
2003 | { | |
2004 | printf("%d", f/d); | |
2005 | f %= d; | |
2006 | d /= 10; | |
2007 | } | |
2008 | while (f != 0); | |
2009 | printf("\n"); | |
2010 | } | |
2011 | } | |
2012 | break; | |
2013 | ||
2014 | /* If the numerical value is unset, try for the string value */ | |
2015 | ||
2016 | case opt_expand_uid: | |
2017 | if (! *get_set_flag(name, oltop, last, options_block)) | |
2018 | { | |
2019 | sprintf(CS name2, "*expand_%.50s", name); | |
2020 | ol2 = find_option(name2, oltop, last); | |
2021 | if (ol2 != NULL) | |
2022 | { | |
2023 | void *value2 = ol2->value; | |
2024 | if (options_block != NULL) | |
2025 | value2 = (void *)((uschar *)options_block + (long int)value2); | |
2026 | s = *((uschar **)value2); | |
2027 | printf("%s = %s\n", name, (s == NULL)? US"" : string_printing(s)); | |
2028 | break; | |
2029 | } | |
2030 | } | |
2031 | ||
2032 | /* Else fall through */ | |
2033 | ||
2034 | case opt_uid: | |
2035 | if (! *get_set_flag(name, oltop, last, options_block)) | |
2036 | printf("%s =\n", name); | |
2037 | else | |
2038 | { | |
2039 | pw = getpwuid(*((uid_t *)value)); | |
2040 | if (pw == NULL) | |
2041 | printf("%s = %ld\n", name, (long int)(*((uid_t *)value))); | |
2042 | else printf("%s = %s\n", name, pw->pw_name); | |
2043 | } | |
2044 | break; | |
2045 | ||
2046 | /* If the numerical value is unset, try for the string value */ | |
2047 | ||
2048 | case opt_expand_gid: | |
2049 | if (! *get_set_flag(name, oltop, last, options_block)) | |
2050 | { | |
2051 | sprintf(CS name2, "*expand_%.50s", name); | |
2052 | ol2 = find_option(name2, oltop, last); | |
2053 | if (ol2 != NULL && (ol2->type & opt_mask) == opt_stringptr) | |
2054 | { | |
2055 | void *value2 = ol2->value; | |
2056 | if (options_block != NULL) | |
2057 | value2 = (void *)((uschar *)options_block + (long int)value2); | |
2058 | s = *((uschar **)value2); | |
2059 | printf("%s = %s\n", name, (s == NULL)? US"" : string_printing(s)); | |
2060 | break; | |
2061 | } | |
2062 | } | |
2063 | ||
2064 | /* Else fall through */ | |
2065 | ||
2066 | case opt_gid: | |
2067 | if (! *get_set_flag(name, oltop, last, options_block)) | |
2068 | printf("%s =\n", name); | |
2069 | else | |
2070 | { | |
2071 | gr = getgrgid(*((int *)value)); | |
2072 | if (gr == NULL) | |
2073 | printf("%s = %ld\n", name, (long int)(*((int *)value))); | |
2074 | else printf("%s = %s\n", name, gr->gr_name); | |
2075 | } | |
2076 | break; | |
2077 | ||
2078 | case opt_uidlist: | |
2079 | uidlist = *((uid_t **)value); | |
2080 | printf("%s =", name); | |
2081 | if (uidlist != NULL) | |
2082 | { | |
2083 | int i; | |
2084 | uschar sep = ' '; | |
2085 | for (i = 1; i <= (int)(uidlist[0]); i++) | |
2086 | { | |
2087 | uschar *name = NULL; | |
2088 | pw = getpwuid(uidlist[i]); | |
2089 | if (pw != NULL) name = US pw->pw_name; | |
2090 | if (name != NULL) printf("%c%s", sep, name); | |
2091 | else printf("%c%ld", sep, (long int)(uidlist[i])); | |
2092 | sep = ':'; | |
2093 | } | |
2094 | } | |
2095 | printf("\n"); | |
2096 | break; | |
2097 | ||
2098 | case opt_gidlist: | |
2099 | gidlist = *((gid_t **)value); | |
2100 | printf("%s =", name); | |
2101 | if (gidlist != NULL) | |
2102 | { | |
2103 | int i; | |
2104 | uschar sep = ' '; | |
2105 | for (i = 1; i <= (int)(gidlist[0]); i++) | |
2106 | { | |
2107 | uschar *name = NULL; | |
2108 | gr = getgrgid(gidlist[i]); | |
2109 | if (gr != NULL) name = US gr->gr_name; | |
2110 | if (name != NULL) printf("%c%s", sep, name); | |
2111 | else printf("%c%ld", sep, (long int)(gidlist[i])); | |
2112 | sep = ':'; | |
2113 | } | |
2114 | } | |
2115 | printf("\n"); | |
2116 | break; | |
2117 | ||
2118 | case opt_time: | |
2119 | printf("%s = %s\n", name, readconf_printtime(*((int *)value))); | |
2120 | break; | |
2121 | ||
2122 | case opt_timelist: | |
2123 | { | |
2124 | int i; | |
2125 | int *list = (int *)value; | |
2126 | printf("%s = ", name); | |
2127 | for (i = 0; i < list[1]; i++) | |
2128 | printf("%s%s", (i == 0)? "" : ":", readconf_printtime(list[i+2])); | |
2129 | printf("\n"); | |
2130 | } | |
2131 | break; | |
2132 | ||
2133 | case opt_bit: | |
2134 | printf("%s%s\n", ((*((int *)value)) & (1 << ((ol->type >> 16) & 31)))? | |
2135 | "" : "no_", name); | |
2136 | break; | |
2137 | ||
2138 | case opt_expand_bool: | |
2139 | sprintf(CS name2, "*expand_%.50s", name); | |
2140 | ol2 = find_option(name2, oltop, last); | |
2141 | if (ol2 != NULL && ol2->value != NULL) | |
2142 | { | |
2143 | void *value2 = ol2->value; | |
2144 | if (options_block != NULL) | |
2145 | value2 = (void *)((uschar *)options_block + (long int)value2); | |
2146 | s = *((uschar **)value2); | |
2147 | if (s != NULL) | |
2148 | { | |
2149 | printf("%s = %s\n", name, string_printing(s)); | |
2150 | break; | |
2151 | } | |
2152 | /* s == NULL => string not set; fall through */ | |
2153 | } | |
2154 | ||
2155 | /* Fall through */ | |
2156 | ||
2157 | case opt_bool: | |
2158 | case opt_bool_verify: | |
2159 | case opt_bool_set: | |
2160 | printf("%s%s\n", (*((BOOL *)value))? "" : "no_", name); | |
2161 | break; | |
2162 | } | |
2163 | } | |
2164 | ||
2165 | ||
2166 | ||
2167 | /************************************************* | |
2168 | * Print value from main configuration * | |
2169 | *************************************************/ | |
2170 | ||
2171 | /* This function, called as a result of encountering the -bP option, | |
2172 | causes the value of any main configuration variable to be output if the | |
2173 | second argument is NULL. There are some special values: | |
2174 | ||
2175 | all print all main configuration options | |
2176 | configure_file print the name of the configuration file | |
2177 | routers print the routers' configurations | |
2178 | transports print the transports' configuration | |
2179 | authenticators print the authenticators' configuration | |
2180 | router_list print a list of router names | |
2181 | transport_list print a list of transport names | |
2182 | authenticator_list print a list of authentication mechanism names | |
2183 | +name print a named list item | |
2184 | local_scan print the local_scan options | |
2185 | ||
2186 | If the second argument is not NULL, it must be one of "router", "transport", or | |
2187 | "authenticator" in which case the first argument identifies the driver whose | |
2188 | options are to be printed. | |
2189 | ||
2190 | Arguments: | |
2191 | name option name if type == NULL; else driver name | |
2192 | type NULL or driver type name, as described above | |
2193 | ||
2194 | Returns: nothing | |
2195 | */ | |
2196 | ||
2197 | void | |
2198 | readconf_print(uschar *name, uschar *type) | |
2199 | { | |
2200 | BOOL names_only = FALSE; | |
2201 | optionlist *ol; | |
2202 | optionlist *ol2 = NULL; | |
2203 | driver_instance *d = NULL; | |
2204 | int size = 0; | |
2205 | ||
2206 | if (type == NULL) | |
2207 | { | |
2208 | if (*name == '+') | |
2209 | { | |
2210 | int i; | |
2211 | tree_node *t; | |
2212 | BOOL found = FALSE; | |
2213 | static uschar *types[] = { US"address", US"domain", US"host", | |
2214 | US"localpart" }; | |
2215 | static tree_node **anchors[] = { &addresslist_anchor, &domainlist_anchor, | |
2216 | &hostlist_anchor, &localpartlist_anchor }; | |
2217 | ||
2218 | for (i = 0; i < 4; i++) | |
2219 | { | |
2220 | t = tree_search(*(anchors[i]), name+1); | |
2221 | if (t != NULL) | |
2222 | { | |
2223 | found = TRUE; | |
2224 | printf("%slist %s = %s\n", types[i], name+1, | |
2225 | ((namedlist_block *)(t->data.ptr))->string); | |
2226 | } | |
2227 | } | |
2228 | ||
2229 | if (!found) | |
2230 | printf("no address, domain, host, or local part list called \"%s\" " | |
2231 | "exists\n", name+1); | |
2232 | ||
2233 | return; | |
2234 | } | |
2235 | ||
2236 | if (Ustrcmp(name, "configure_file") == 0) | |
2237 | { | |
2238 | printf("%s\n", CS config_main_filename); | |
2239 | return; | |
2240 | } | |
2241 | ||
2242 | if (Ustrcmp(name, "all") == 0) | |
2243 | { | |
2244 | for (ol = optionlist_config; | |
2245 | ol < optionlist_config + optionlist_config_size; ol++) | |
2246 | { | |
2247 | if ((ol->type & opt_hidden) == 0) | |
2248 | print_ol(ol, US ol->name, NULL, optionlist_config, optionlist_config_size); | |
2249 | } | |
2250 | return; | |
2251 | } | |
2252 | ||
2253 | if (Ustrcmp(name, "local_scan") == 0) | |
2254 | { | |
2255 | #ifndef LOCAL_SCAN_HAS_OPTIONS | |
2256 | printf("local_scan() options are not supported\n"); | |
2257 | #else | |
2258 | for (ol = local_scan_options; | |
2259 | ol < local_scan_options + local_scan_options_count; ol++) | |
2260 | { | |
2261 | print_ol(ol, US ol->name, NULL, local_scan_options, | |
2262 | local_scan_options_count); | |
2263 | } | |
2264 | #endif | |
2265 | return; | |
2266 | } | |
2267 | ||
2268 | if (Ustrcmp(name, "routers") == 0) | |
2269 | { | |
2270 | type = US"router"; | |
2271 | name = NULL; | |
2272 | } | |
2273 | else if (Ustrcmp(name, "transports") == 0) | |
2274 | { | |
2275 | type = US"transport"; | |
2276 | name = NULL; | |
2277 | } | |
2278 | ||
2279 | else if (Ustrcmp(name, "authenticators") == 0) | |
2280 | { | |
2281 | type = US"authenticator"; | |
2282 | name = NULL; | |
2283 | } | |
2284 | ||
2285 | else if (Ustrcmp(name, "authenticator_list") == 0) | |
2286 | { | |
2287 | type = US"authenticator"; | |
2288 | name = NULL; | |
2289 | names_only = TRUE; | |
2290 | } | |
2291 | ||
2292 | else if (Ustrcmp(name, "router_list") == 0) | |
2293 | { | |
2294 | type = US"router"; | |
2295 | name = NULL; | |
2296 | names_only = TRUE; | |
2297 | } | |
2298 | else if (Ustrcmp(name, "transport_list") == 0) | |
2299 | { | |
2300 | type = US"transport"; | |
2301 | name = NULL; | |
2302 | names_only = TRUE; | |
2303 | } | |
2304 | else | |
2305 | { | |
2306 | print_ol(find_option(name, optionlist_config, optionlist_config_size), | |
2307 | name, NULL, optionlist_config, optionlist_config_size); | |
2308 | return; | |
2309 | } | |
2310 | } | |
2311 | ||
2312 | /* Handle the options for a router or transport. Skip options that are flagged | |
2313 | as hidden. Some of these are options with names starting with '*', used for | |
2314 | internal alternative representations of other options (which the printing | |
2315 | function will sort out). Others are synonyms kept for backward compatibility. | |
2316 | */ | |
2317 | ||
2318 | if (Ustrcmp(type, "router") == 0) | |
2319 | { | |
2320 | d = (driver_instance *)routers; | |
2321 | ol2 = optionlist_routers; | |
2322 | size = optionlist_routers_size; | |
2323 | } | |
2324 | else if (Ustrcmp(type, "transport") == 0) | |
2325 | { | |
2326 | d = (driver_instance *)transports; | |
2327 | ol2 = optionlist_transports; | |
2328 | size = optionlist_transports_size; | |
2329 | } | |
2330 | else if (Ustrcmp(type, "authenticator") == 0) | |
2331 | { | |
2332 | d = (driver_instance *)auths; | |
2333 | ol2 = optionlist_auths; | |
2334 | size = optionlist_auths_size; | |
2335 | } | |
2336 | ||
2337 | if (names_only) | |
2338 | { | |
2339 | for (; d != NULL; d = d->next) printf("%s\n", CS d->name); | |
2340 | return; | |
2341 | } | |
2342 | ||
2343 | /* Either search for a given driver, or print all of them */ | |
2344 | ||
2345 | for (; d != NULL; d = d->next) | |
2346 | { | |
2347 | if (name == NULL) | |
2348 | printf("\n%s %s:\n", d->name, type); | |
2349 | else if (Ustrcmp(d->name, name) != 0) continue; | |
2350 | ||
2351 | for (ol = ol2; ol < ol2 + size; ol++) | |
2352 | { | |
2353 | if ((ol->type & opt_hidden) == 0) | |
2354 | print_ol(ol, US ol->name, d, ol2, size); | |
2355 | } | |
2356 | ||
2357 | for (ol = d->info->options; | |
2358 | ol < d->info->options + *(d->info->options_count); ol++) | |
2359 | { | |
2360 | if ((ol->type & opt_hidden) == 0) | |
2361 | print_ol(ol, US ol->name, d, d->info->options, *(d->info->options_count)); | |
2362 | } | |
2363 | if (name != NULL) return; | |
2364 | } | |
2365 | if (name != NULL) printf("%s %s not found\n", type, name); | |
2366 | } | |
2367 | ||
2368 | ||
2369 | ||
2370 | /************************************************* | |
2371 | * Read a named list item * | |
2372 | *************************************************/ | |
2373 | ||
2374 | /* This function reads a name and a list (i.e. string). The name is used to | |
2375 | save the list in a tree, sorted by its name. Each entry also has a number, | |
2376 | which can be used for caching tests, but if the string contains any expansion | |
2377 | items other than $key, the number is set negative to inhibit caching. This | |
2378 | mechanism is used for domain, host, and address lists that are referenced by | |
2379 | the "+name" syntax. | |
2380 | ||
2381 | Arguments: | |
2382 | anchorp points to the tree anchor | |
2383 | numberp points to the current number for this tree | |
2384 | max the maximum number permitted | |
2385 | s the text of the option line, starting immediately after the name | |
2386 | of the list type | |
2387 | tname the name of the list type, for messages | |
2388 | ||
2389 | Returns: nothing | |
2390 | */ | |
2391 | ||
2392 | static void | |
2393 | read_named_list(tree_node **anchorp, int *numberp, int max, uschar *s, | |
2394 | uschar *tname) | |
2395 | { | |
2396 | BOOL forcecache = FALSE; | |
2397 | uschar *ss; | |
2398 | tree_node *t; | |
2399 | namedlist_block *nb = store_get(sizeof(namedlist_block)); | |
2400 | ||
2401 | if (Ustrncmp(s, "_cache", 6) == 0) | |
2402 | { | |
2403 | forcecache = TRUE; | |
2404 | s += 6; | |
2405 | } | |
2406 | ||
2407 | if (!isspace(*s)) | |
2408 | log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "unrecognized configuration line"); | |
2409 | ||
2410 | if (*numberp >= max) | |
2411 | log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "too many named %ss (max is %d)\n", | |
2412 | tname, max); | |
2413 | ||
2414 | while (isspace(*s)) s++; | |
2415 | ss = s; | |
2416 | while (isalnum(*s) || *s == '_') s++; | |
2417 | t = store_get(sizeof(tree_node) + s-ss); | |
2418 | Ustrncpy(t->name, ss, s-ss); | |
2419 | t->name[s-ss] = 0; | |
2420 | while (isspace(*s)) s++; | |
2421 | ||
2422 | if (!tree_insertnode(anchorp, t)) | |
2423 | log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, | |
2424 | "duplicate name \"%s\" for a named %s", t->name, tname); | |
2425 | ||
2426 | t->data.ptr = nb; | |
2427 | nb->number = *numberp; | |
2428 | *numberp += 1; | |
2429 | ||
2430 | if (*s++ != '=') log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, | |
2431 | "missing '=' after \"%s\"", t->name); | |
2432 | while (isspace(*s)) s++; | |
2433 | nb->string = read_string(s, t->name); | |
2434 | nb->cache_data = NULL; | |
2435 | ||
2436 | /* Check the string for any expansions; if any are found, mark this list | |
2437 | uncacheable unless the user has explicited forced caching. */ | |
2438 | ||
2439 | if (!forcecache && Ustrchr(nb->string, '$') != NULL) nb->number = -1; | |
2440 | } | |
2441 | ||
2442 | ||
2443 | ||
2444 | ||
2445 | /************************************************* | |
2446 | * Unpick data for a rate limit * | |
2447 | *************************************************/ | |
2448 | ||
2449 | /* This function is called to unpick smtp_ratelimit_{mail,rcpt} into four | |
2450 | separate values. | |
2451 | ||
2452 | Arguments: | |
2453 | s string, in the form t,b,f,l | |
2454 | where t is the threshold (integer) | |
2455 | b is the initial delay (time) | |
2456 | f is the multiplicative factor (fixed point) | |
2457 | k is the maximum time (time) | |
2458 | threshold where to store threshold | |
2459 | base where to store base in milliseconds | |
2460 | factor where to store factor in milliseconds | |
2461 | limit where to store limit | |
2462 | ||
2463 | Returns: nothing (panics on error) | |
2464 | */ | |
2465 | ||
2466 | static void | |
2467 | unpick_ratelimit(uschar *s, int *threshold, int *base, double *factor, | |
2468 | int *limit) | |
2469 | { | |
2470 | uschar bstring[16], lstring[16]; | |
2471 | ||
2472 | if (sscanf(CS s, "%d, %15[0123456789smhdw.], %lf, %15s", threshold, bstring, | |
2473 | factor, lstring) == 4) | |
2474 | { | |
2475 | *base = readconf_readtime(bstring, 0, TRUE); | |
2476 | *limit = readconf_readtime(lstring, 0, TRUE); | |
2477 | if (*base >= 0 && *limit >= 0) return; | |
2478 | } | |
2479 | log_write(0, LOG_MAIN|LOG_PANIC_DIE, "malformed ratelimit data: %s", s); | |
2480 | } | |
2481 | ||
2482 | ||
2483 | ||
2484 | ||
2485 | /************************************************* | |
2486 | * Read main configuration options * | |
2487 | *************************************************/ | |
2488 | ||
2489 | /* This function is the first to be called for configuration reading. It | |
2490 | opens the configuration file and reads general configuration settings until | |
2491 | it reaches the end of the configuration section. The file is then left open so | |
2492 | that the remaining configuration data can subsequently be read if needed for | |
2493 | this run of Exim. | |
2494 | ||
2495 | The configuration file must be owned either by root or exim, and be writeable | |
2496 | only by root or uid/gid exim. The values for Exim's uid and gid can be changed | |
2497 | in the config file, so the test is done on the compiled in values. A slight | |
2498 | anomaly, to be carefully documented. | |
2499 | ||
2500 | The name of the configuration file is taken from a list that is included in the | |
2501 | binary of Exim. It can be altered from the command line, but if that is done, | |
2502 | root privilege is immediately withdrawn unless the caller is root or exim. | |
2503 | The first file on the list that exists is used. | |
2504 | ||
2505 | For use on multiple systems that share file systems, first look for a | |
2506 | configuration file whose name has the current node name on the end. If that is | |
2507 | not found, try the generic name. For really contorted configurations, that run | |
2508 | multiple Exims with different uid settings, first try adding the effective uid | |
2509 | before the node name. These complications are going to waste resources on most | |
2510 | systems. Therefore they are available only when requested by compile-time | |
2511 | options. */ | |
2512 | ||
2513 | void | |
2514 | readconf_main(void) | |
2515 | { | |
2516 | int sep = 0; | |
2517 | struct stat statbuf; | |
2518 | uschar *s, *filename; | |
2519 | uschar *list = config_main_filelist; | |
2520 | ||
2521 | /* Loop through the possible file names */ | |
2522 | ||
2523 | while((filename = string_nextinlist(&list, &sep, big_buffer, big_buffer_size)) | |
2524 | != NULL) | |
2525 | { | |
2526 | /* Cut out all the fancy processing unless specifically wanted */ | |
2527 | ||
2528 | #if defined(CONFIGURE_FILE_USE_NODE) || defined(CONFIGURE_FILE_USE_EUID) | |
2529 | uschar *suffix = filename + Ustrlen(filename); | |
2530 | ||
2531 | /* Try for the node-specific file if a node name exists */ | |
2532 | ||
2533 | #ifdef CONFIGURE_FILE_USE_NODE | |
2534 | struct utsname uts; | |
2535 | if (uname(&uts) >= 0) | |
2536 | { | |
2537 | #ifdef CONFIGURE_FILE_USE_EUID | |
2538 | sprintf(CS suffix, ".%ld.%.256s", (long int)original_euid, uts.nodename); | |
2539 | config_file = Ufopen(filename, "rb"); | |
2540 | if (config_file == NULL) | |
2541 | #endif /* CONFIGURE_FILE_USE_EUID */ | |
2542 | { | |
2543 | sprintf(CS suffix, ".%.256s", uts.nodename); | |
2544 | config_file = Ufopen(filename, "rb"); | |
2545 | } | |
2546 | } | |
2547 | #endif /* CONFIGURE_FILE_USE_NODE */ | |
2548 | ||
2549 | /* Otherwise, try the generic name, possibly with the euid added */ | |
2550 | ||
2551 | #ifdef CONFIGURE_FILE_USE_EUID | |
2552 | if (config_file == NULL) | |
2553 | { | |
2554 | sprintf(CS suffix, ".%ld", (long int)original_euid); | |
2555 | config_file = Ufopen(filename, "rb"); | |
2556 | } | |
2557 | #endif /* CONFIGURE_FILE_USE_EUID */ | |
2558 | ||
2559 | /* Finally, try the unadorned name */ | |
2560 | ||
2561 | if (config_file == NULL) | |
2562 | { | |
2563 | *suffix = 0; | |
2564 | config_file = Ufopen(filename, "rb"); | |
2565 | } | |
2566 | #else /* if neither defined */ | |
2567 | ||
2568 | /* This is the common case when the fancy processing is not included. */ | |
2569 | ||
2570 | config_file = Ufopen(filename, "rb"); | |
2571 | #endif | |
2572 | ||
2573 | /* If the file does not exist, continue to try any others. For any other | |
2574 | error, break out (and die). */ | |
2575 | ||
2576 | if (config_file != NULL || errno != ENOENT) break; | |
2577 | } | |
2578 | ||
2579 | /* On success, save the name for verification; config_filename is used when | |
2580 | logging configuration errors (it changes for .included files) whereas | |
2581 | config_main_filename is the name shown by -bP. Failure to open a configuration | |
2582 | file is a serious disaster. */ | |
2583 | ||
2584 | if (config_file != NULL) | |
2585 | { | |
2586 | config_filename = config_main_filename = string_copy(filename); | |
2587 | } | |
2588 | else | |
2589 | { | |
2590 | if (filename == NULL) | |
2591 | log_write(0, LOG_MAIN|LOG_PANIC_DIE, "non-existent configuration file(s): " | |
2592 | "%s", config_main_filelist); | |
2593 | else | |
2594 | log_write(0, LOG_MAIN|LOG_PANIC_DIE, "%s", string_open_failed(errno, | |
2595 | "configuration file %s", filename)); | |
2596 | } | |
2597 | ||
2598 | /* Check the status of the file we have opened, unless it was specified on | |
2599 | the command line, in which case privilege was given away at the start. */ | |
2600 | ||
2601 | if (!config_changed) | |
2602 | { | |
2603 | if (fstat(fileno(config_file), &statbuf) != 0) | |
2604 | log_write(0, LOG_MAIN|LOG_PANIC_DIE, "failed to stat configuration file %s", | |
2605 | big_buffer); | |
2606 | ||
2607 | if ((statbuf.st_uid != root_uid && /* owner not root */ | |
2608 | statbuf.st_uid != exim_uid /* owner not exim */ | |
2609 | #ifdef CONFIGURE_OWNER | |
2610 | && statbuf.st_uid != config_uid /* owner not the special one */ | |
2611 | #endif | |
2612 | ) || /* or */ | |
35edf2ff PH |
2613 | (statbuf.st_gid != exim_gid /* group not exim & */ |
2614 | #ifdef CONFIGURE_GROUP | |
2615 | && statbuf.st_gid != config_gid /* group not the special one */ | |
2616 | #endif | |
2617 | && (statbuf.st_mode & 020) != 0) || /* group writeable */ | |
059ec3d9 PH |
2618 | /* or */ |
2619 | ((statbuf.st_mode & 2) != 0)) /* world writeable */ | |
2620 | ||
2621 | log_write(0, LOG_MAIN|LOG_PANIC_DIE, "Exim configuration file %s has the " | |
2622 | "wrong owner, group, or mode", big_buffer); | |
2623 | } | |
2624 | ||
2625 | /* Process the main configuration settings. They all begin with a lower case | |
2626 | letter. If we see something starting with an upper case letter, it is taken as | |
2627 | a macro definition. */ | |
2628 | ||
2629 | while ((s = get_config_line()) != NULL) | |
2630 | { | |
2631 | if (isupper(s[0])) | |
2632 | { | |
2633 | macro_item *m; | |
2634 | macro_item *mlast = NULL; | |
2635 | uschar name[64]; | |
2636 | int namelen = 0; | |
2637 | ||
2638 | while (isalnum(*s) || *s == '_') | |
2639 | { | |
2640 | if (namelen >= sizeof(name) - 1) | |
2641 | log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, | |
2642 | "macro name too long (maximum is %d characters)", sizeof(name) - 1); | |
2643 | name[namelen++] = *s++; | |
2644 | } | |
2645 | name[namelen] = 0; | |
2646 | while (isspace(*s)) s++; | |
2647 | if (*s++ != '=') log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, | |
2648 | "malformed macro definition"); | |
2649 | while (isspace(*s)) s++; | |
2650 | ||
2651 | /* If an existing macro of the same name was defined on the command line, | |
2652 | we just skip this definition. Otherwise it's an error to attempt to | |
2653 | redefine a macro. It is also an error to define a macro whose name begins | |
2654 | with the name of a previously-defined macro. */ | |
2655 | ||
2656 | for (m = macros; m != NULL; m = m->next) | |
2657 | { | |
2658 | int len = Ustrlen(m->name); | |
2659 | ||
2660 | if (Ustrcmp(m->name, name) == 0) | |
2661 | { | |
2662 | if (m->command_line) break; | |
2663 | log_write(0, LOG_CONFIG|LOG_PANIC_DIE, "macro \"%s\" is already " | |
2664 | "defined", name); | |
2665 | } | |
2666 | ||
2667 | if (len < namelen && Ustrstr(name, m->name) != NULL) | |
2668 | log_write(0, LOG_CONFIG|LOG_PANIC_DIE, "\"%s\" cannot be defined as " | |
2669 | "a macro because previously defined macro \"%s\" is a substring", | |
2670 | name, m->name); | |
2671 | ||
2672 | mlast = m; | |
2673 | } | |
2674 | if (m != NULL) continue; /* Found an overriding command-line definition */ | |
2675 | ||
2676 | m = store_get(sizeof(macro_item) + namelen); | |
2677 | m->next = NULL; | |
2678 | m->command_line = FALSE; | |
2679 | if (mlast == NULL) macros = m; else mlast->next = m; | |
2680 | ||
2681 | /* This use of strcpy() is OK because we have obtained a block of store | |
2682 | whose size is based on the length of "name". The definition of the | |
2683 | macro_item structure includes a final vector called "name" which is one | |
2684 | byte long. Thus, adding "namelen" gives us enough room to store the "name" | |
2685 | string. */ | |
2686 | ||
2687 | Ustrcpy(m->name, name); | |
2688 | m->replacement = string_copy(s); | |
2689 | } | |
2690 | ||
2691 | else if (Ustrncmp(s, "domainlist", 10) == 0) | |
2692 | read_named_list(&domainlist_anchor, &domainlist_count, | |
2693 | MAX_NAMED_LIST, s+10, US"domain list"); | |
2694 | ||
2695 | else if (Ustrncmp(s, "hostlist", 8) == 0) | |
2696 | read_named_list(&hostlist_anchor, &hostlist_count, | |
2697 | MAX_NAMED_LIST, s+8, US"host list"); | |
2698 | ||
2699 | else if (Ustrncmp(s, US"addresslist", 11) == 0) | |
2700 | read_named_list(&addresslist_anchor, &addresslist_count, | |
2701 | MAX_NAMED_LIST, s+11, US"address list"); | |
2702 | ||
2703 | else if (Ustrncmp(s, US"localpartlist", 13) == 0) | |
2704 | read_named_list(&localpartlist_anchor, &localpartlist_count, | |
2705 | MAX_NAMED_LIST, s+13, US"local part list"); | |
2706 | ||
2707 | else | |
2708 | (void) readconf_handle_option(s, optionlist_config, optionlist_config_size, | |
2709 | NULL, US"main option \"%s\" unknown"); | |
2710 | } | |
2711 | ||
2712 | ||
2713 | /* If local_sender_retain is set, local_from_check must be unset. */ | |
2714 | ||
2715 | if (local_sender_retain && local_from_check) | |
2716 | log_write(0, LOG_MAIN|LOG_PANIC_DIE, "both local_from_check and " | |
2717 | "local_sender_retain are set; this combination is not allowed"); | |
2718 | ||
2719 | /* If the timezone string is empty, set it to NULL, implying no TZ variable | |
2720 | wanted. */ | |
2721 | ||
2722 | if (timezone_string != NULL && *timezone_string == 0) timezone_string = NULL; | |
2723 | ||
2724 | /* remote_max_parallel must be > 0 */ | |
2725 | ||
2726 | if (remote_max_parallel <= 0) remote_max_parallel = 1; | |
2727 | ||
2728 | /* The primary host name may be required for expansion of spool_directory | |
2729 | and log_file_path, so make sure it is set asap. It is obtained from uname(), | |
2730 | but if that yields an unqualified value, make a FQDN by using gethostbyname to | |
2731 | canonize it. Some people like upper case letters in their host names, so we | |
2732 | don't force the case. */ | |
2733 | ||
2734 | if (primary_hostname == NULL) | |
2735 | { | |
2736 | uschar *hostname; | |
2737 | struct utsname uts; | |
2738 | if (uname(&uts) < 0) | |
2739 | log_write(0, LOG_MAIN|LOG_PANIC_DIE, "uname() failed to yield host name"); | |
2740 | hostname = US uts.nodename; | |
2741 | ||
2742 | if (Ustrchr(hostname, '.') == NULL) | |
2743 | { | |
2744 | int af = AF_INET; | |
2745 | struct hostent *hostdata; | |
2746 | ||
2747 | #if HAVE_IPV6 | |
2748 | if (dns_ipv4_lookup == NULL || | |
2749 | match_isinlist(hostname, &dns_ipv4_lookup, 0, NULL, NULL, MCL_DOMAIN, | |
2750 | TRUE, NULL) != OK) | |
2751 | af = AF_INET6; | |
2752 | #else | |
2753 | af = AF_INET; | |
2754 | #endif | |
2755 | ||
2756 | for (;;) | |
2757 | { | |
2758 | #if HAVE_IPV6 | |
2759 | #if HAVE_GETIPNODEBYNAME | |
2760 | int error_num; | |
2761 | hostdata = getipnodebyname(CS hostname, af, 0, &error_num); | |
2762 | #else | |
2763 | hostdata = gethostbyname2(CS hostname, af); | |
2764 | #endif | |
2765 | #else | |
2766 | hostdata = gethostbyname(CS hostname); | |
2767 | #endif | |
2768 | ||
2769 | if (hostdata != NULL) | |
2770 | { | |
2771 | hostname = US hostdata->h_name; | |
2772 | break; | |
2773 | } | |
2774 | ||
2775 | if (af == AF_INET) break; | |
2776 | af = AF_INET; | |
2777 | } | |
2778 | } | |
2779 | ||
2780 | primary_hostname = string_copy(hostname); | |
2781 | } | |
2782 | ||
2783 | /* Set up default value for smtp_active_hostname */ | |
2784 | ||
2785 | smtp_active_hostname = primary_hostname; | |
2786 | ||
2787 | /* If spool_directory wasn't set in the build-time configuration, it must have | |
2788 | got set above. Of course, writing to the log may not work if log_file_path is | |
2789 | not set, but it will at least get to syslog or somewhere, with any luck. */ | |
2790 | ||
2791 | if (*spool_directory == 0) | |
2792 | log_write(0, LOG_MAIN|LOG_PANIC_DIE, "spool_directory undefined: cannot " | |
2793 | "proceed"); | |
2794 | ||
2795 | /* Expand the spool directory name; it may, for example, contain the primary | |
2796 | host name. Same comment about failure. */ | |
2797 | ||
2798 | s = expand_string(spool_directory); | |
2799 | if (s == NULL) | |
2800 | log_write(0, LOG_MAIN|LOG_PANIC_DIE, "failed to expand spool_directory " | |
2801 | "\"%s\": %s", spool_directory, expand_string_message); | |
2802 | spool_directory = s; | |
2803 | ||
2804 | /* Expand log_file_path, which must contain "%s" in any component that isn't | |
2805 | the null string or "syslog". It is also allowed to contain one instance of %D. | |
2806 | However, it must NOT contain % followed by anything else. */ | |
2807 | ||
2808 | if (*log_file_path != 0) | |
2809 | { | |
2810 | uschar *ss, *sss; | |
2811 | int sep = ':'; /* Fixed for log file path */ | |
2812 | s = expand_string(log_file_path); | |
2813 | if (s == NULL) | |
2814 | log_write(0, LOG_MAIN|LOG_PANIC_DIE, "failed to expand log_file_path " | |
2815 | "\"%s\": %s", log_file_path, expand_string_message); | |
2816 | ||
2817 | ss = s; | |
2818 | while ((sss = string_nextinlist(&ss,&sep,big_buffer,big_buffer_size)) != NULL) | |
2819 | { | |
2820 | uschar *t; | |
2821 | if (sss[0] == 0 || Ustrcmp(sss, "syslog") == 0) continue; | |
2822 | t = Ustrstr(sss, "%s"); | |
2823 | if (t == NULL) | |
2824 | log_write(0, LOG_MAIN|LOG_PANIC_DIE, "log_file_path \"%s\" does not " | |
2825 | "contain \"%%s\"", sss); | |
2826 | *t = 'X'; | |
2827 | t = Ustrchr(sss, '%'); | |
2828 | if (t != NULL) | |
2829 | { | |
2830 | if (t[1] != 'D' || Ustrchr(t+2, '%') != NULL) | |
2831 | log_write(0, LOG_MAIN|LOG_PANIC_DIE, "log_file_path \"%s\" contains " | |
2832 | "unexpected \"%%\" character", s); | |
2833 | } | |
2834 | } | |
2835 | ||
2836 | log_file_path = s; | |
2837 | } | |
2838 | ||
2839 | /* Interpret syslog_facility into an integer argument for 'ident' param to | |
2840 | openlog(). Default is LOG_MAIL set in globals.c. Allow the user to omit the | |
2841 | leading "log_". */ | |
2842 | ||
2843 | if (syslog_facility_str != NULL) | |
2844 | { | |
2845 | int i; | |
2846 | uschar *s = syslog_facility_str; | |
2847 | ||
2848 | if ((Ustrlen(syslog_facility_str) >= 4) && | |
2849 | (strncmpic(syslog_facility_str, US"log_", 4) == 0)) | |
2850 | s += 4; | |
2851 | ||
2852 | for (i = 0; i < syslog_list_size; i++) | |
2853 | { | |
2854 | if (strcmpic(s, syslog_list[i].name) == 0) | |
2855 | { | |
2856 | syslog_facility = syslog_list[i].value; | |
2857 | break; | |
2858 | } | |
2859 | } | |
2860 | ||
2861 | if (i >= syslog_list_size) | |
2862 | { | |
2863 | log_write(0, LOG_PANIC_DIE|LOG_CONFIG, | |
2864 | "failed to interpret syslog_facility \"%s\"", syslog_facility_str); | |
2865 | } | |
2866 | } | |
2867 | ||
2868 | /* Expand pid_file_path */ | |
2869 | ||
2870 | if (*pid_file_path != 0) | |
2871 | { | |
2872 | s = expand_string(pid_file_path); | |
2873 | if (s == NULL) | |
2874 | log_write(0, LOG_MAIN|LOG_PANIC_DIE, "failed to expand pid_file_path " | |
2875 | "\"%s\": %s", pid_file_path, expand_string_message); | |
2876 | pid_file_path = s; | |
2877 | } | |
2878 | ||
2879 | /* Compile the regex for matching a UUCP-style "From_" line in an incoming | |
2880 | message. */ | |
2881 | ||
2882 | regex_From = regex_must_compile(uucp_from_pattern, FALSE, TRUE); | |
2883 | ||
2884 | /* Unpick the SMTP rate limiting options, if set */ | |
2885 | ||
2886 | if (smtp_ratelimit_mail != NULL) | |
2887 | { | |
2888 | unpick_ratelimit(smtp_ratelimit_mail, &smtp_rlm_threshold, | |
2889 | &smtp_rlm_base, &smtp_rlm_factor, &smtp_rlm_limit); | |
2890 | } | |
2891 | ||
2892 | if (smtp_ratelimit_rcpt != NULL) | |
2893 | { | |
2894 | unpick_ratelimit(smtp_ratelimit_rcpt, &smtp_rlr_threshold, | |
2895 | &smtp_rlr_base, &smtp_rlr_factor, &smtp_rlr_limit); | |
2896 | } | |
2897 | ||
2898 | /* The qualify domains default to the primary host name */ | |
2899 | ||
2900 | if (qualify_domain_sender == NULL) | |
2901 | qualify_domain_sender = primary_hostname; | |
2902 | if (qualify_domain_recipient == NULL) | |
2903 | qualify_domain_recipient = qualify_domain_sender; | |
2904 | ||
2905 | /* Setting system_filter_user in the configuration sets the gid as well if a | |
2906 | name is given, but a numerical value does not. */ | |
2907 | ||
2908 | if (system_filter_uid_set && !system_filter_gid_set) | |
2909 | { | |
2910 | struct passwd *pw = getpwuid(system_filter_uid); | |
2911 | if (pw == NULL) | |
2912 | log_write(0, LOG_MAIN|LOG_PANIC_DIE, "Failed to look up uid %ld", | |
2913 | (long int)system_filter_uid); | |
2914 | system_filter_gid = pw->pw_gid; | |
2915 | system_filter_gid_set = TRUE; | |
2916 | } | |
2917 | ||
2918 | /* If the errors_reply_to field is set, check that it is syntactically valid | |
2919 | and ensure it contains a domain. */ | |
2920 | ||
2921 | if (errors_reply_to != NULL) | |
2922 | { | |
2923 | uschar *errmess; | |
2924 | int start, end, domain; | |
2925 | uschar *recipient = parse_extract_address(errors_reply_to, &errmess, | |
2926 | &start, &end, &domain, FALSE); | |
2927 | ||
2928 | if (recipient == NULL) | |
2929 | log_write(0, LOG_PANIC_DIE|LOG_CONFIG, | |
2930 | "error in errors_reply_to (%s): %s", errors_reply_to, errmess); | |
2931 | ||
2932 | if (domain == 0) | |
2933 | log_write(0, LOG_PANIC_DIE|LOG_CONFIG, | |
2934 | "errors_reply_to (%s) does not contain a domain", errors_reply_to); | |
2935 | } | |
2936 | ||
2937 | /* If smtp_accept_queue or smtp_accept_max_per_host is set, then | |
2938 | smtp_accept_max must also be set. */ | |
2939 | ||
2940 | if (smtp_accept_max == 0 && | |
2941 | (smtp_accept_queue > 0 || smtp_accept_max_per_host != NULL)) | |
2942 | log_write(0, LOG_PANIC_DIE|LOG_CONFIG, | |
2943 | "smtp_accept_max must be set if smtp_accept_queue or " | |
2944 | "smtp_accept_max_per_host is set"); | |
2945 | ||
2946 | /* Set up the host number if anything is specified. It is an expanded string | |
2947 | so that it can be computed from the host name, for example. We do this last | |
2948 | so as to ensure that everything else is set up before the expansion. */ | |
2949 | ||
2950 | if (host_number_string != NULL) | |
2951 | { | |
2952 | uschar *end; | |
2953 | uschar *s = expand_string(host_number_string); | |
2954 | long int n = Ustrtol(s, &end, 0); | |
2955 | while (isspace(*end)) end++; | |
2956 | if (*end != 0) | |
2957 | log_write(0, LOG_PANIC_DIE|LOG_CONFIG, | |
2958 | "localhost_number value is not a number: %s", s); | |
2959 | if (n > LOCALHOST_MAX) | |
2960 | log_write(0, LOG_PANIC_DIE|LOG_CONFIG, | |
2961 | "localhost_number is greater than the maximum allowed value (%d)", | |
2962 | LOCALHOST_MAX); | |
2963 | host_number = n; | |
2964 | } | |
2965 | ||
2966 | #ifdef SUPPORT_TLS | |
2967 | /* If tls_verify_hosts is set, tls_verify_certificates must also be set */ | |
2968 | ||
2969 | if ((tls_verify_hosts != NULL || tls_try_verify_hosts != NULL) && | |
2970 | tls_verify_certificates == NULL) | |
2971 | log_write(0, LOG_PANIC_DIE|LOG_CONFIG, | |
2972 | "tls_%sverify_hosts is set, but tls_verify_certificates is not set", | |
2973 | (tls_verify_hosts != NULL)? "" : "try_"); | |
2974 | #endif | |
2975 | } | |
2976 | ||
2977 | ||
2978 | ||
2979 | /************************************************* | |
2980 | * Initialize one driver * | |
2981 | *************************************************/ | |
2982 | ||
2983 | /* This is called once the driver's generic options, if any, have been read. | |
2984 | We can now find the driver, set up defaults for the private options, and | |
2985 | unset any "set" bits in the private options table (which might have been | |
2986 | set by another incarnation of the same driver). | |
2987 | ||
2988 | Arguments: | |
2989 | d pointer to driver instance block, with generic | |
2990 | options filled in | |
2991 | drivers_available vector of available drivers | |
2992 | size_of_info size of each block in drivers_available | |
2993 | class class of driver, for error message | |
2994 | ||
2995 | Returns: pointer to the driver info block | |
2996 | */ | |
2997 | ||
2998 | static driver_info * | |
2999 | init_driver(driver_instance *d, driver_info *drivers_available, | |
3000 | int size_of_info, uschar *class) | |
3001 | { | |
3002 | driver_info *dd; | |
3003 | ||
3004 | for (dd = drivers_available; dd->driver_name[0] != 0; | |
3005 | dd = (driver_info *)(((uschar *)dd) + size_of_info)) | |
3006 | { | |
3007 | if (Ustrcmp(d->driver_name, dd->driver_name) == 0) | |
3008 | { | |
3009 | int i; | |
3010 | int len = dd->options_len; | |
3011 | d->info = dd; | |
3012 | d->options_block = store_get(len); | |
3013 | memcpy(d->options_block, dd->options_block, len); | |
3014 | for (i = 0; i < *(dd->options_count); i++) | |
3015 | dd->options[i].type &= ~opt_set; | |
3016 | return dd; | |
3017 | } | |
3018 | } | |
3019 | ||
3020 | log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, | |
3021 | "%s %s: cannot find %s driver \"%s\"", class, d->name, class, d->driver_name); | |
3022 | ||
3023 | return NULL; /* never obeyed */ | |
3024 | } | |
3025 | ||
3026 | ||
3027 | ||
3028 | ||
3029 | /************************************************* | |
3030 | * Initialize driver list * | |
3031 | *************************************************/ | |
3032 | ||
3033 | /* This function is called for routers, transports, and authentication | |
3034 | mechanisms. It reads the data from the current point in the configuration file | |
3035 | up to the end of the section, and sets up a chain of instance blocks according | |
3036 | to the file's contents. The file will already have been opened by a call to | |
3037 | readconf_main, and must be left open for subsequent reading of further data. | |
3038 | ||
3039 | Any errors cause a panic crash. Note that the blocks with names driver_info and | |
3040 | driver_instance must map the first portions of all the _info and _instance | |
3041 | blocks for this shared code to work. | |
3042 | ||
3043 | Arguments: | |
3044 | class "router", "transport", or "authenticator" | |
3045 | anchor &routers, &transports, &auths | |
3046 | drivers_available available drivers | |
3047 | size_of_info size of each info block | |
3048 | instance_default points to default data for an instance | |
3049 | instance_size size of instance block | |
3050 | driver_optionlist generic option list | |
3051 | driver_optionlist_count count of generic option list | |
3052 | ||
3053 | Returns: nothing | |
3054 | */ | |
3055 | ||
3056 | void | |
3057 | readconf_driver_init( | |
3058 | uschar *class, | |
3059 | driver_instance **anchor, | |
3060 | driver_info *drivers_available, | |
3061 | int size_of_info, | |
3062 | void *instance_default, | |
3063 | int instance_size, | |
3064 | optionlist *driver_optionlist, | |
3065 | int driver_optionlist_count) | |
3066 | { | |
3067 | driver_instance **p = anchor; | |
3068 | driver_instance *d = NULL; | |
3069 | uschar *buffer; | |
3070 | ||
3071 | /* Now process the configuration lines */ | |
3072 | ||
3073 | while ((buffer = get_config_line()) != NULL) | |
3074 | { | |
3075 | uschar name[64]; | |
3076 | ||
3077 | /* Read the first name on the line and test for the start of a new driver. | |
3078 | If this isn't the start of a new driver, the line will be re-read. */ | |
3079 | ||
3080 | uschar *s = readconf_readname(name, sizeof(name), buffer); | |
3081 | ||
3082 | /* If the line starts with a name terminated by a colon, we are at the | |
3083 | start of the definition of a new driver. The rest of the line must be | |
3084 | blank. */ | |
3085 | ||
3086 | if (*s++ == ':') | |
3087 | { | |
3088 | int i; | |
3089 | ||
3090 | /* Finish off initializing the previous driver. */ | |
3091 | ||
3092 | if (d != NULL) | |
3093 | { | |
3094 | if (d->driver_name == NULL) | |
3095 | log_write(0, LOG_PANIC_DIE|LOG_CONFIG, | |
3096 | "no driver defined for %s \"%s\"", class, d->name); | |
3097 | (d->info->init)(d); | |
3098 | } | |
3099 | ||
3100 | /* Check that we haven't already got a driver of this name */ | |
3101 | ||
3102 | for (d = *anchor; d != NULL; d = d->next) | |
3103 | if (Ustrcmp(name, d->name) == 0) | |
3104 | log_write(0, LOG_PANIC_DIE|LOG_CONFIG, | |
3105 | "there are two %ss called \"%s\"", class, name); | |
3106 | ||
3107 | /* Set up a new driver instance data block on the chain, with | |
3108 | its default values installed. */ | |
3109 | ||
3110 | d = store_get(instance_size); | |
3111 | memcpy(d, instance_default, instance_size); | |
3112 | *p = d; | |
3113 | p = &(d->next); | |
3114 | d->name = string_copy(name); | |
3115 | ||
3116 | /* Clear out the "set" bits in the generic options */ | |
3117 | ||
3118 | for (i = 0; i < driver_optionlist_count; i++) | |
3119 | driver_optionlist[i].type &= ~opt_set; | |
3120 | ||
3121 | /* Check nothing more on this line, then do the next loop iteration. */ | |
3122 | ||
3123 | while (isspace(*s)) s++; | |
3124 | if (*s != 0) extra_chars_error(s, US"driver name ", name, US""); | |
3125 | continue; | |
3126 | } | |
3127 | ||
3128 | /* Give an error if we have not set up a current driver yet. */ | |
3129 | ||
3130 | if (d == NULL) log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, | |
3131 | "%s name missing", class); | |
3132 | ||
3133 | /* First look to see if this is a generic option; if it is "driver", | |
3134 | initialize the driver. If is it not a generic option, we can look for a | |
3135 | private option provided that the driver has been previously set up. */ | |
3136 | ||
3137 | if (readconf_handle_option(buffer, driver_optionlist, | |
3138 | driver_optionlist_count, d, NULL)) | |
3139 | { | |
3140 | if (d->info == NULL && d->driver_name != NULL) | |
3141 | init_driver(d, drivers_available, size_of_info, class); | |
3142 | } | |
3143 | ||
3144 | /* Handle private options - pass the generic block because some may | |
3145 | live therein. A flag with each option indicates if it is in the public | |
3146 | block. */ | |
3147 | ||
3148 | else if (d->info != NULL) | |
3149 | { | |
3150 | readconf_handle_option(buffer, d->info->options, | |
3151 | *(d->info->options_count), d, US"option \"%s\" unknown"); | |
3152 | } | |
3153 | ||
3154 | /* The option is not generic and the driver name has not yet been given. */ | |
3155 | ||
3156 | else log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "option \"%s\" unknown " | |
3157 | "(\"driver\" must be specified before any private options)", name); | |
3158 | } | |
3159 | ||
3160 | /* Run the initialization function for the final driver. */ | |
3161 | ||
3162 | if (d != NULL) | |
3163 | { | |
3164 | if (d->driver_name == NULL) | |
3165 | log_write(0, LOG_PANIC_DIE|LOG_CONFIG, | |
3166 | "no driver defined for %s \"%s\"", class, d->name); | |
3167 | (d->info->init)(d); | |
3168 | } | |
3169 | } | |
3170 | ||
3171 | ||
3172 | ||
3173 | /************************************************* | |
3174 | * Check driver dependency * | |
3175 | *************************************************/ | |
3176 | ||
3177 | /* This function is passed a driver instance and a string. It checks whether | |
3178 | any of the string options for the driver contains the given string as an | |
3179 | expansion variable. | |
3180 | ||
3181 | Arguments: | |
3182 | d points to a driver instance block | |
3183 | s the string to search for | |
3184 | ||
3185 | Returns: TRUE if a dependency is found | |
3186 | */ | |
3187 | ||
3188 | BOOL | |
3189 | readconf_depends(driver_instance *d, uschar *s) | |
3190 | { | |
3191 | int count = *(d->info->options_count); | |
3192 | optionlist *ol; | |
3193 | uschar *ss; | |
3194 | ||
3195 | for (ol = d->info->options; ol < d->info->options + count; ol++) | |
3196 | { | |
3197 | void *options_block; | |
3198 | uschar *value; | |
3199 | int type = ol->type & opt_mask; | |
3200 | if (type != opt_stringptr) continue; | |
3201 | options_block = ((ol->type & opt_public) == 0)? d->options_block : (void *)d; | |
3202 | value = *(uschar **)((uschar *)options_block + (long int)(ol->value)); | |
3203 | if (value != NULL && (ss = Ustrstr(value, s)) != NULL) | |
3204 | { | |
3205 | if (ss <= value || (ss[-1] != '$' && ss[-1] != '{') || | |
3206 | isalnum(ss[Ustrlen(s)])) continue; | |
3207 | DEBUG(D_transport) debug_printf("driver %s: \"%s\" option depends on %s\n", | |
3208 | d->name, ol->name, s); | |
3209 | return TRUE; | |
3210 | } | |
3211 | } | |
3212 | ||
3213 | DEBUG(D_transport) debug_printf("driver %s does not depend on %s\n", d->name, s); | |
3214 | return FALSE; | |
3215 | } | |
3216 | ||
3217 | ||
3218 | ||
3219 | ||
3220 | /************************************************* | |
3221 | * Decode an error type for retries * | |
3222 | *************************************************/ | |
3223 | ||
3224 | /* This function is global because it is also called from the main | |
3225 | program when testing retry information. It decodes strings such as "quota_7d" | |
3226 | into numerical error codes. | |
3227 | ||
3228 | Arguments: | |
3229 | pp points to start of text | |
3230 | p points past end of text | |
3231 | basic_errno points to an int to receive the main error number | |
3232 | more_errno points to an int to receive the secondary error data | |
3233 | ||
3234 | Returns: NULL if decoded correctly; else points to error text | |
3235 | */ | |
3236 | ||
3237 | uschar * | |
3238 | readconf_retry_error(uschar *pp, uschar *p, int *basic_errno, int *more_errno) | |
3239 | { | |
3240 | int len; | |
3241 | uschar *q = pp; | |
3242 | while (q < p && *q != '_') q++; | |
3243 | len = q - pp; | |
3244 | ||
3245 | if (len == 5 && strncmpic(pp, US"quota", len) == 0) | |
3246 | { | |
3247 | *basic_errno = ERRNO_EXIMQUOTA; | |
3248 | if (q != p && (*more_errno = readconf_readtime(q+1, *p, FALSE)) < 0) | |
3249 | return US"bad time value"; | |
3250 | } | |
3251 | ||
3252 | else if (len == 7 && strncmpic(pp, US"refused", len) == 0) | |
3253 | { | |
3254 | *basic_errno = ECONNREFUSED; | |
3255 | if (q != p) | |
3256 | { | |
3257 | if (strncmpic(q+1, US"MX", p-q-1) == 0) *more_errno = 'M'; | |
3258 | else if (strncmpic(q+1, US"A", p-q-1) == 0) *more_errno = 'A'; | |
3259 | else return US"A or MX expected after \"refused\""; | |
3260 | } | |
3261 | } | |
3262 | ||
3263 | else if (len == 7 && strncmpic(pp, US"timeout", len) == 0) | |
3264 | { | |
3265 | *basic_errno = ETIMEDOUT; | |
3266 | if (q != p) | |
3267 | { | |
3268 | int i; | |
3269 | int xlen = p - q - 1; | |
3270 | uschar *x = q + 1; | |
3271 | ||
3272 | static uschar *extras[] = | |
3273 | { US"A", US"MX", US"connect", US"connect_A", US"connect_MX" }; | |
3274 | static int values[] = | |
3275 | { 'A', 'M', RTEF_CTOUT, RTEF_CTOUT|'A', RTEF_CTOUT|'M' }; | |
3276 | ||
3277 | for (i = 0; i < sizeof(extras)/sizeof(uschar *); i++) | |
3278 | { | |
3279 | if (strncmpic(x, extras[i], xlen) == 0) | |
3280 | { | |
3281 | *more_errno = values[i]; | |
3282 | break; | |
3283 | } | |
3284 | } | |
3285 | ||
3286 | if (i >= sizeof(extras)/sizeof(uschar *)) | |
3287 | { | |
3288 | if (strncmpic(x, US"DNS", xlen) == 0) | |
3289 | { | |
3290 | log_write(0, LOG_MAIN|LOG_PANIC, "\"timeout_dns\" is no longer " | |
3291 | "available in retry rules (it has never worked) - treated as " | |
3292 | "\"timeout\""); | |
3293 | } | |
3294 | else return US"\"A\", \"MX\", or \"connect\" expected after \"timeout\""; | |
3295 | } | |
3296 | } | |
3297 | } | |
3298 | ||
3299 | else if (strncmpic(pp, US"rcpt_4", 6) == 0) | |
3300 | { | |
3301 | BOOL bad = FALSE; | |
3302 | int x = 255; /* means "any 4xx code" */ | |
3303 | if (p != pp + 8) bad = TRUE; else | |
3304 | { | |
3305 | int a = pp[6], b = pp[7]; | |
3306 | if (isdigit(a)) | |
3307 | { | |
3308 | x = (a - '0') * 10; | |
3309 | if (isdigit(b)) x += b - '0'; | |
3310 | else if (b == 'x') x += 100; | |
3311 | else bad = TRUE; | |
3312 | } | |
3313 | else if (a != 'x' || b != 'x') bad = TRUE; | |
3314 | } | |
3315 | ||
3316 | if (bad) return US"rcpt_4 must be followed by xx, dx, or dd, where " | |
3317 | "x is literal and d is any digit"; | |
3318 | ||
3319 | *basic_errno = ERRNO_RCPT4XX; | |
3320 | *more_errno = x << 8; | |
3321 | } | |
3322 | ||
3323 | else if (len == 4 && strncmpic(pp, US"auth", len) == 0 && | |
3324 | strncmpic(q+1, US"failed", p-q-1) == 0) | |
3325 | { | |
3326 | *basic_errno = ERRNO_AUTHFAIL; | |
3327 | } | |
3328 | ||
3329 | else if (len != 1 || Ustrncmp(pp, "*", 1) != 0) | |
3330 | return string_sprintf("unknown or malformed retry error \"%.*s\"", p-pp, pp); | |
3331 | ||
3332 | return NULL; | |
3333 | } | |
3334 | ||
3335 | ||
3336 | ||
3337 | ||
3338 | /************************************************* | |
3339 | * Read retry information * | |
3340 | *************************************************/ | |
3341 | ||
3342 | /* Each line of retry information contains: | |
3343 | ||
3344 | . A domain name pattern or an address pattern; | |
3345 | ||
3346 | . An error name, possibly with additional data, or *; | |
3347 | ||
3348 | . An optional sequence of retry items, each consisting of an identifying | |
3349 | letter, a cutoff time, and optional parameters. | |
3350 | ||
3351 | All this is decoded and placed into a control block. */ | |
3352 | ||
3353 | ||
3354 | /* Subroutine to read an argument, preceded by a comma and terminated | |
3355 | by comma, semicolon, whitespace, or newline. The types are: 0 = time value, | |
3356 | 1 = fixed point number (returned *1000). | |
3357 | ||
3358 | Arguments: | |
3359 | paddr pointer to pointer to current character; updated | |
3360 | type 0 => read a time; 1 => read a fixed point number | |
3361 | ||
3362 | Returns: time in seconds or fixed point number * 1000 | |
3363 | */ | |
3364 | ||
3365 | static int | |
3366 | retry_arg(uschar **paddr, int type) | |
3367 | { | |
3368 | uschar *p = *paddr; | |
3369 | uschar *pp; | |
3370 | ||
3371 | if (*p++ != ',') log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "comma expected"); | |
3372 | ||
3373 | while (isspace(*p)) p++; | |
3374 | pp = p; | |
3375 | while (isalnum(*p) || (type == 1 && *p == '.')) p++; | |
3376 | ||
3377 | if (*p != 0 && !isspace(*p) && *p != ',' && *p != ';') | |
3378 | log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "comma or semicolon expected"); | |
3379 | ||
3380 | *paddr = p; | |
3381 | switch (type) | |
3382 | { | |
3383 | case 0: | |
3384 | return readconf_readtime(pp, *p, FALSE); | |
3385 | case 1: | |
3386 | return readconf_readfixed(pp, *p); | |
3387 | } | |
3388 | return 0; /* Keep picky compilers happy */ | |
3389 | } | |
3390 | ||
3391 | /* The function proper */ | |
3392 | ||
3393 | void | |
3394 | readconf_retries(void) | |
3395 | { | |
3396 | retry_config **chain = &retries; | |
3397 | retry_config *next; | |
3398 | uschar *p; | |
3399 | ||
3400 | while ((p = get_config_line()) != NULL) | |
3401 | { | |
3402 | retry_rule **rchain; | |
3403 | uschar *pp, *error; | |
3404 | ||
3405 | next = store_get(sizeof(retry_config)); | |
3406 | next->next = NULL; | |
3407 | *chain = next; | |
3408 | chain = &(next->next); | |
3409 | next->basic_errno = next->more_errno = 0; | |
3410 | next->senders = NULL; | |
3411 | next->rules = NULL; | |
3412 | rchain = &(next->rules); | |
3413 | ||
3414 | next->pattern = string_dequote(&p); | |
3415 | while (isspace(*p)) p++; | |
3416 | pp = p; | |
3417 | while (mac_isgraph(*p)) p++; | |
3418 | if (p - pp <= 0) log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, | |
3419 | "missing error type"); | |
3420 | ||
3421 | /* Test error names for things we understand. */ | |
3422 | ||
3423 | if ((error = readconf_retry_error(pp, p, &(next->basic_errno), | |
3424 | &(next->more_errno))) != NULL) | |
3425 | log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "%s", error); | |
3426 | ||
3427 | /* There may be an optional address list of senders to be used as another | |
3428 | constraint on the rule. This was added later, so the syntax is a bit of a | |
3429 | fudge. Anything that is not a retry rule starting "F," or "G," is treated as | |
3430 | an address list. */ | |
3431 | ||
3432 | while (isspace(*p)) p++; | |
3433 | if (Ustrncmp(p, "senders", 7) == 0) | |
3434 | { | |
3435 | p += 7; | |
3436 | while (isspace(*p)) p++; | |
3437 | if (*p++ != '=') log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, | |
3438 | "\"=\" expected after \"senders\" in retry rule"); | |
3439 | while (isspace(*p)) p++; | |
3440 | next->senders = string_dequote(&p); | |
3441 | } | |
3442 | ||
3443 | /* Now the retry rules. Keep the maximum timeout encountered. */ | |
3444 | ||
3445 | while (isspace(*p)) p++; | |
3446 | ||
3447 | while (*p != 0) | |
3448 | { | |
3449 | retry_rule *rule = store_get(sizeof(retry_rule)); | |
3450 | *rchain = rule; | |
3451 | rchain = &(rule->next); | |
3452 | rule->next = NULL; | |
3453 | rule->rule = toupper(*p++); | |
3454 | rule->timeout = retry_arg(&p, 0); | |
3455 | if (rule->timeout > retry_maximum_timeout) | |
3456 | retry_maximum_timeout = rule->timeout; | |
3457 | ||
3458 | switch (rule->rule) | |
3459 | { | |
3460 | case 'F': /* Fixed interval */ | |
3461 | rule->p1 = retry_arg(&p, 0); | |
3462 | break; | |
3463 | ||
3464 | case 'G': /* Geometrically increasing intervals */ | |
3465 | rule->p1 = retry_arg(&p, 0); | |
3466 | rule->p2 = retry_arg(&p, 1); | |
3467 | break; | |
3468 | ||
3469 | default: | |
3470 | log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "unknown retry rule letter"); | |
3471 | break; | |
3472 | } | |
3473 | ||
3474 | if (rule->timeout <= 0 || rule->p1 <= 0 || | |
3475 | (rule->rule == 'G' && rule->p2 < 1000)) | |
3476 | log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, | |
3477 | "bad parameters for retry rule"); | |
3478 | ||
3479 | while (isspace(*p)) p++; | |
3480 | if (*p == ';') | |
3481 | { | |
3482 | p++; | |
3483 | while (isspace(*p)) p++; | |
3484 | } | |
3485 | else if (*p != 0) | |
3486 | log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "semicolon expected"); | |
3487 | } | |
3488 | } | |
3489 | } | |
3490 | ||
3491 | ||
3492 | ||
3493 | /************************************************* | |
3494 | * Initialize authenticators * | |
3495 | *************************************************/ | |
3496 | ||
3497 | /* Read the authenticators section of the configuration file. | |
3498 | ||
3499 | Arguments: none | |
3500 | Returns: nothing | |
3501 | */ | |
3502 | ||
3503 | static void | |
3504 | auths_init(void) | |
3505 | { | |
3506 | auth_instance *au, *bu; | |
3507 | readconf_driver_init(US"authenticator", | |
3508 | (driver_instance **)(&auths), /* chain anchor */ | |
3509 | (driver_info *)auths_available, /* available drivers */ | |
3510 | sizeof(auth_info), /* size of info block */ | |
3511 | &auth_defaults, /* default values for generic options */ | |
3512 | sizeof(auth_instance), /* size of instance block */ | |
3513 | optionlist_auths, /* generic options */ | |
3514 | optionlist_auths_size); | |
3515 | ||
3516 | for (au = auths; au != NULL; au = au->next) | |
3517 | { | |
3518 | if (au->public_name == NULL) | |
3519 | log_write(0, LOG_PANIC_DIE|LOG_CONFIG, "no public name specified for " | |
3520 | "the %s authenticator", au->name); | |
3521 | for (bu = au->next; bu != NULL; bu = bu->next) | |
3522 | { | |
3523 | if (strcmpic(au->public_name, bu->public_name) == 0) | |
3524 | { | |
3525 | if ((au->client && bu->client) || (au->server && bu->server)) | |
3526 | log_write(0, LOG_PANIC_DIE|LOG_CONFIG, "two %s authenticators " | |
3527 | "(%s and %s) have the same public name (%s)", | |
3528 | (au->client)? US"client" : US"server", au->name, bu->name, | |
3529 | au->public_name); | |
3530 | } | |
3531 | } | |
3532 | } | |
3533 | } | |
3534 | ||
3535 | ||
3536 | ||
3537 | ||
3538 | /************************************************* | |
3539 | * Read ACL information * | |
3540 | *************************************************/ | |
3541 | ||
3542 | /* If this run of Exim is not doing something that involves receiving a | |
3543 | message, we can just skip over the ACL information. No need to parse it. | |
3544 | ||
3545 | First, we have a function for acl_read() to call back to get the next line. We | |
3546 | need to remember the line we passed, because at the end it will contain the | |
3547 | name of the next ACL. */ | |
3548 | ||
3549 | static uschar *acl_line; | |
3550 | ||
3551 | static uschar * | |
3552 | acl_callback(void) | |
3553 | { | |
3554 | acl_line = get_config_line(); | |
3555 | return acl_line; | |
3556 | } | |
3557 | ||
3558 | ||
3559 | /* Now the main function: | |
3560 | ||
3561 | Arguments: | |
3562 | skip TRUE when this Exim process is doing something that will | |
3563 | not need the ACL data | |
3564 | ||
3565 | Returns: nothing | |
3566 | */ | |
3567 | ||
3568 | static void | |
3569 | readconf_acl(BOOL skip) | |
3570 | { | |
3571 | uschar *p; | |
3572 | ||
3573 | /* Not receiving messages, don't need to parse the ACL data */ | |
3574 | ||
3575 | if (skip) | |
3576 | { | |
3577 | DEBUG(D_acl) debug_printf("skipping ACL configuration - not needed\n"); | |
3578 | while ((p = get_config_line()) != NULL); | |
3579 | return; | |
3580 | } | |
3581 | ||
3582 | /* Read each ACL and add it into the tree */ | |
3583 | ||
3584 | acl_line = get_config_line(); | |
3585 | ||
3586 | while(acl_line != NULL) | |
3587 | { | |
3588 | uschar name[64]; | |
3589 | tree_node *node; | |
3590 | uschar *error; | |
3591 | ||
3592 | p = readconf_readname(name, sizeof(name), acl_line); | |
3593 | if (*p != ':') | |
3594 | log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "missing ACL name"); | |
3595 | ||
3596 | node = store_get(sizeof(tree_node) + Ustrlen(name)); | |
3597 | Ustrcpy(node->name, name); | |
3598 | if (!tree_insertnode(&acl_anchor, node)) | |
3599 | log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, | |
3600 | "there are two ACLs called \"%s\"", name); | |
3601 | ||
3602 | node->data.ptr = acl_read(acl_callback, &error); | |
3603 | ||
3604 | if (node->data.ptr == NULL && error != NULL) | |
3605 | log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "error in ACL: %s", error); | |
3606 | } | |
3607 | } | |
3608 | ||
3609 | ||
3610 | ||
3611 | /************************************************* | |
3612 | * Read configuration for local_scan() * | |
3613 | *************************************************/ | |
3614 | ||
3615 | /* This function is called after "begin local_scan" is encountered in the | |
3616 | configuration file. If the local_scan() function allows for configuration | |
3617 | options, we can process them. Otherwise, we expire in a panic. | |
3618 | ||
3619 | Arguments: none | |
3620 | Returns: nothing | |
3621 | */ | |
3622 | ||
3623 | static void | |
3624 | local_scan_init(void) | |
3625 | { | |
3626 | #ifndef LOCAL_SCAN_HAS_OPTIONS | |
3627 | log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, "local_scan() options not supported: " | |
3628 | "(LOCAL_SCAN_HAS_OPTIONS not defined in Local/Makefile)"); | |
3629 | #else | |
3630 | ||
3631 | uschar *p; | |
3632 | while ((p = get_config_line()) != NULL) | |
3633 | { | |
3634 | (void) readconf_handle_option(p, local_scan_options, local_scan_options_count, | |
3635 | NULL, US"local_scan option \"%s\" unknown"); | |
3636 | } | |
3637 | #endif | |
3638 | } | |
3639 | ||
3640 | ||
3641 | ||
3642 | /************************************************* | |
3643 | * Read rest of configuration (after main) * | |
3644 | *************************************************/ | |
3645 | ||
3646 | /* This function reads the rest of the runtime configuration, after the main | |
3647 | configuration. It is called only when actually needed. Each subsequent section | |
3648 | of the configuration starts with a line of the form | |
3649 | ||
3650 | begin name | |
3651 | ||
3652 | where the name is "routers", "transports", etc. A section is terminated by | |
3653 | hitting the next "begin" line, and the next name is left in next_section. | |
3654 | Because it may confuse people as to whether the names are singular or plural, | |
3655 | we add "s" if it's missing. There is always enough room in next_section for | |
3656 | this. This function is basically just a switch. | |
3657 | ||
3658 | Arguments: | |
3659 | skip_acl TRUE if ACL information is not needed | |
3660 | ||
3661 | Returns: nothing | |
3662 | */ | |
3663 | ||
3664 | static uschar *section_list[] = { | |
3665 | US"acls", | |
3666 | US"authenticators", | |
3667 | US"local_scans", | |
3668 | US"retrys", | |
3669 | US"rewrites", | |
3670 | US"routers", | |
3671 | US"transports"}; | |
3672 | ||
3673 | void | |
3674 | readconf_rest(BOOL skip_acl) | |
3675 | { | |
3676 | int had = 0; | |
3677 | ||
3678 | while(next_section[0] != 0) | |
3679 | { | |
3680 | int bit; | |
3681 | int first = 0; | |
3682 | int last = sizeof(section_list) / sizeof(uschar *); | |
3683 | int mid = last/2; | |
3684 | int n = Ustrlen(next_section); | |
3685 | ||
3686 | if (tolower(next_section[n-1]) != 's') Ustrcpy(next_section+n, "s"); | |
3687 | ||
3688 | for (;;) | |
3689 | { | |
3690 | int c = strcmpic(next_section, section_list[mid]); | |
3691 | if (c == 0) break; | |
3692 | if (c > 0) first = mid + 1; else last = mid; | |
3693 | if (first >= last) | |
3694 | log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, | |
3695 | "\"%.*s\" is not a known configuration section name", n, next_section); | |
3696 | mid = (last + first)/2; | |
3697 | } | |
3698 | ||
3699 | bit = 1 << mid; | |
3700 | if (((had ^= bit) & bit) == 0) | |
3701 | log_write(0, LOG_PANIC_DIE|LOG_CONFIG_IN, | |
3702 | "\"%.*s\" section is repeated in the configuration file", n, | |
3703 | next_section); | |
3704 | ||
3705 | switch(mid) | |
3706 | { | |
3707 | case 0: readconf_acl(skip_acl); break; | |
3708 | case 1: auths_init(); break; | |
3709 | case 2: local_scan_init(); break; | |
3710 | case 3: readconf_retries(); break; | |
3711 | case 4: readconf_rewrites(); break; | |
3712 | case 5: route_init(); break; | |
3713 | case 6: transport_init(); break; | |
3714 | } | |
3715 | } | |
3716 | ||
3717 | fclose(config_file); | |
3718 | } | |
3719 | ||
3720 | /* End of readconf.c */ |