src/src/functions.h

   1 /*************************************************
   2 *     Exim - an Internet mail transport agent    *
   3 *************************************************/
   4
   5 /* Copyright (c) University of Cambridge 1995 - 2014 */
   6 /* See the file NOTICE for conditions of use and distribution. */
   7
   8
   9 /* Prototypes for functions that appear in various modules. Gathered together
  10 to avoid having a lot of tiddly little headers with only a couple of lines in
  11 them. However, some functions that are used (or not used) by utility programs
  12 are in in fact in separate headers. */
  13
  14
  15 #ifdef EXIM_PERL
  16 extern uschar *call_perl_cat(uschar *, int *, int *, uschar **, uschar *,
  17                  uschar **);
  18 extern void    cleanup_perl(void);
  19 extern uschar *init_perl(uschar *);
  20 #endif
  21
  22
  23 #ifdef SUPPORT_TLS
  24 extern const char *
  25                std_dh_prime_default(void);
  26 extern const char *
  27                std_dh_prime_named(const uschar *);
  28
  29 extern uschar * tls_cert_crl_uri(void *, uschar * mod);
  30 extern uschar * tls_cert_ext_by_oid(void *, uschar *, int);
  31 extern uschar * tls_cert_issuer(void *, uschar * mod);
  32 extern uschar * tls_cert_not_before(void *, uschar * mod);
  33 extern uschar * tls_cert_not_after(void *, uschar * mod);
  34 extern uschar * tls_cert_ocsp_uri(void *, uschar * mod);
  35 extern uschar * tls_cert_serial_number(void *, uschar * mod);
  36 extern uschar * tls_cert_signature(void *, uschar * mod);
  37 extern uschar * tls_cert_signature_algorithm(void *, uschar * mod);
  38 extern uschar * tls_cert_subject(void *, uschar * mod);
  39 extern uschar * tls_cert_subject_altname(void *, uschar * mod);
  40 extern uschar * tls_cert_version(void *, uschar * mod);
  41
  42 extern uschar * tls_cert_fprt_md5(void *);
  43 extern uschar * tls_cert_fprt_sha1(void *);
  44 extern uschar * tls_cert_fprt_sha256(void *);
  45
  46 extern int     tls_client_start(int, host_item *, address_item *,
  47                  transport_instance *
  48 #ifdef EXPERIMENTAL_DANE
  49                 , dns_answer *
  50 #endif
  51                                 );
  52 extern void    tls_close(BOOL, BOOL);
  53 extern int     tls_export_cert(uschar *, size_t, void *);
  54 extern int     tls_feof(void);
  55 extern int     tls_ferror(void);
  56 extern void    tls_free_cert(void *);
  57 extern int     tls_getc(void);
  58 extern int     tls_import_cert(const uschar *, void **);
  59 extern int     tls_read(BOOL, uschar *, size_t);
  60 extern int     tls_server_start(const uschar *);
  61 extern BOOL    tls_smtp_buffered(void);
  62 extern int     tls_ungetc(int);
  63 extern int     tls_write(BOOL, const uschar *, size_t);
  64 extern uschar *tls_validate_require_cipher(void);
  65 extern void    tls_version_report(FILE *);
  66 # ifndef USE_GNUTLS
  67 extern BOOL    tls_openssl_options_parse(uschar *, long *);
  68 # endif
  69 extern uschar * tls_field_from_dn(uschar *, uschar *);
  70 # ifdef EXPERIMENTAL_CERTNAMES
  71 extern BOOL    tls_is_name_for_cert(uschar *, void *);
  72 # endif
  73
  74 # ifdef EXPERIMENTAL_DANE
  75 extern int     tlsa_lookup(const host_item *, dns_answer *, BOOL, BOOL *);
  76 # endif
  77
  78 #endif  /*SUPPORT_TLS*/
  79
  80
  81 /* Everything else... */
  82
  83 extern acl_block *acl_read(uschar *(*)(void), uschar **);
  84 extern int     acl_check(int, uschar *, uschar *, uschar **, uschar **);
  85 extern int     acl_eval(int, uschar *, uschar **, uschar **);
  86
  87 extern tree_node *acl_var_create(uschar *);
  88 extern void    acl_var_write(uschar *, uschar *, void *);
  89 extern uschar *auth_b64encode(uschar *, int);
  90 extern int     auth_b64decode(uschar *, uschar **);
  91 extern int     auth_call_pam(uschar *, uschar **);
  92 extern int     auth_call_pwcheck(uschar *, uschar **);
  93 extern int     auth_call_radius(uschar *, uschar **);
  94 extern int     auth_call_saslauthd(uschar *, uschar *, uschar *, uschar *,
  95                  uschar **);
  96 extern int     auth_check_serv_cond(auth_instance *);
  97 extern int     auth_check_some_cond(auth_instance *, uschar *, uschar *, int);
  98
  99 extern int     auth_get_data(uschar **, uschar *, int);
 100 extern int     auth_get_no64_data(uschar **, uschar *);
 101 extern uschar *auth_xtextencode(uschar *, int);
 102 extern int     auth_xtextdecode(uschar *, uschar **);
 103
 104 extern void    cancel_cutthrough_connection(const char *);
 105 extern int     check_host(void *, uschar *, uschar **, uschar **);
 106 extern uschar **child_exec_exim(int, BOOL, int *, BOOL, int, ...);
 107 extern pid_t   child_open_uid(uschar **, uschar **, int, uid_t *, gid_t *,
 108                  int *, int *, uschar *, BOOL);
 109 extern uschar *cutthrough_finaldot(void);
 110 extern BOOL    cutthrough_flush_send(void);
 111 extern BOOL    cutthrough_headers_send(void);
 112 extern BOOL    cutthrough_predata(void);
 113 extern BOOL    cutthrough_puts(uschar *, int);
 114 extern BOOL    cutthrough_put_nl(void);
 115
 116 extern void    daemon_go(void);
 117
 118 #ifdef EXPERIMENTAL_DCC
 119 extern int     dcc_process(uschar **);
 120 #endif
 121
 122 extern void    debug_logging_activate(uschar *, uschar *);
 123 extern void    debug_print_argv(uschar **);
 124 extern void    debug_print_ids(uschar *);
 125 extern void    debug_print_string(uschar *);
 126 extern void    debug_print_tree(tree_node *);
 127 extern void    debug_vprintf(const char *, va_list);
 128 extern void    decode_bits(unsigned int *, unsigned int *,
 129                   int, int, uschar *, bit_table *, int, uschar *, int);
 130 extern address_item *deliver_make_addr(uschar *, BOOL);
 131 extern void    delivery_log(int, address_item *, int, uschar *);
 132 extern int     deliver_message(uschar *, BOOL, BOOL);
 133 extern void    deliver_msglog(const char *, ...) PRINTF_FUNCTION(1,2);
 134 extern void    deliver_set_expansions(address_item *);
 135 extern int     deliver_split_address(address_item *);
 136 extern void    deliver_succeeded(address_item *);
 137 #ifdef WITH_OLD_DEMIME
 138 extern int     demime(uschar **);
 139 #endif
 140 extern BOOL    directory_make(const uschar *, const uschar *, int, BOOL);
 141 #ifndef DISABLE_DKIM
 142 extern BOOL    dkim_transport_write_message(address_item *, int, int,
 143                    int, uschar *, uschar *, uschar *, uschar *, rewrite_rule *,
 144                    int, uschar *, uschar *, uschar *, uschar *, uschar *, uschar *);
 145 #endif
 146 extern dns_address *dns_address_from_rr(dns_answer *, dns_record *);
 147 extern void    dns_build_reverse(uschar *, uschar *);
 148 extern void    dns_init(BOOL, BOOL, BOOL);
 149 extern int     dns_basic_lookup(dns_answer *, uschar *, int);
 150 extern BOOL    dns_is_secure(dns_answer *);
 151 extern int     dns_lookup(dns_answer *, uschar *, int, uschar **);
 152 extern int     dns_special_lookup(dns_answer *, uschar *, int, uschar **);
 153 extern dns_record *dns_next_rr(dns_answer *, dns_scan *, int);
 154 extern uschar *dns_text_type(int);
 155 extern void    dscp_list_to_stream(FILE *);
 156 extern BOOL    dscp_lookup(const uschar *, int, int *, int *, int *);
 157
 158 extern void    enq_end(uschar *);
 159 extern BOOL    enq_start(uschar *);
 160 #ifdef EXPERIMENTAL_EVENT
 161 extern uschar *event_raise(uschar *, uschar *, uschar *);
 162 #endif
 163 extern void    exim_exit(int);
 164 extern void    exim_nullstd(void);
 165 extern void    exim_setugid(uid_t, gid_t, BOOL, uschar *);
 166 extern int     exim_tvcmp(struct timeval *, struct timeval *);
 167 extern void    exim_wait_tick(struct timeval *, int);
 168 extern BOOL    expand_check_condition(uschar *, uschar *, uschar *);
 169 extern uschar *expand_string(uschar *);
 170 extern uschar *expand_string_copy(uschar *);
 171 extern int_eximarith_t expand_string_integer(uschar *, BOOL);
 172 extern void    modify_variable(uschar *, void *);
 173
 174 extern int     filter_interpret(uschar *, int, address_item **, uschar **);
 175 extern BOOL    filter_personal(string_item *, BOOL);
 176 extern BOOL    filter_runtest(int, uschar *, BOOL, BOOL);
 177 extern BOOL    filter_system_interpret(address_item **, uschar **);
 178
 179 extern uschar * fn_hdrs_added(void);
 180
 181 extern void    header_add(int, const char *, ...);
 182 extern int     header_checkname(header_line *, BOOL);
 183 extern BOOL    header_match(uschar *, BOOL, BOOL, string_item *, int, ...);
 184 extern int     host_address_extract_port(uschar *);
 185 extern uschar *host_and_ident(BOOL);
 186 extern int     host_aton(uschar *, int *);
 187 extern void    host_build_hostlist(host_item **, uschar *, BOOL);
 188 extern ip_address_item *host_build_ifacelist(uschar *, uschar *);
 189 extern void    host_build_log_info(void);
 190 extern void    host_build_sender_fullhost(void);
 191 extern BOOL    host_find_byname(host_item *, uschar *, int, uschar **, BOOL);
 192 extern int     host_find_bydns(host_item *, uschar *, int, uschar *, uschar *,
 193                  uschar *, uschar *, uschar *, uschar **, BOOL *);
 194 extern ip_address_item *host_find_interfaces(void);
 195 extern BOOL    host_is_in_net(uschar *, uschar *, int);
 196 extern BOOL    host_is_tls_on_connect_port(int);
 197 extern int     host_item_get_port(host_item *);
 198 extern void    host_mask(int, int *, int);
 199 extern int     host_name_lookup(void);
 200 extern int     host_nmtoa(int, int *, int, uschar *, int);
 201 extern uschar *host_ntoa(int, const void *, uschar *, int *);
 202 extern int     host_scan_for_local_hosts(host_item *, host_item **, BOOL *);
 203
 204 extern void    invert_address(uschar *, uschar *);
 205 extern int     ip_bind(int, int, uschar *, int);
 206 extern int     ip_connect(int, int, uschar *, int, int);
 207 extern int     ip_connectedsocket(int, const uschar *, int, int,
 208                  int, host_item *, uschar **);
 209 extern int     ip_get_address_family(int);
 210 extern void    ip_keepalive(int, uschar *, BOOL);
 211 extern int     ip_recv(int, uschar *, int, int);
 212 extern int     ip_socket(int, int);
 213
 214 extern uschar *local_part_quote(uschar *);
 215 extern int     log_create(uschar *);
 216 extern int     log_create_as_exim(uschar *);
 217 extern void    log_close_all(void);
 218
 219 #ifdef WITH_CONTENT_SCAN
 220 extern int     malware(uschar **);
 221 extern int     malware_in_file(uschar *);
 222 #endif
 223 extern int     match_address_list(uschar *, BOOL, BOOL, uschar **,
 224                  unsigned int *, int, int, uschar **);
 225 extern int     match_check_list(uschar **, int, tree_node **, unsigned int **,
 226                  int(*)(void *, uschar *, uschar **, uschar **), void *, int,
 227                  const uschar *, uschar **);
 228 extern int     match_isinlist(uschar *, uschar **, int, tree_node **,
 229                  unsigned int *, int, BOOL, uschar **);
 230 extern int     match_check_string(uschar *, uschar *, int, BOOL, BOOL, BOOL,
 231                  uschar **);
 232 extern void    md5_end(md5 *, const uschar *, int, uschar *);
 233 extern void    md5_mid(md5 *, const uschar *);
 234 extern void    md5_start(md5 *);
 235 extern void    millisleep(int);
 236 #ifdef WITH_CONTENT_SCAN
 237 struct mime_boundary_context;
 238 extern int     mime_acl_check(uschar *acl, FILE *f,
 239                  struct mime_boundary_context *, uschar **, uschar **);
 240 extern int     mime_decode(uschar **);
 241 extern int     mime_regex(uschar **);
 242 #endif
 243 extern uschar *moan_check_errorcopy(uschar *);
 244 extern BOOL    moan_skipped_syntax_errors(uschar *, error_block *, uschar *,
 245                  BOOL, uschar *);
 246 extern void    moan_smtp_batch(uschar *, const char *, ...) PRINTF_FUNCTION(2,3);
 247 extern void    moan_tell_someone(uschar *, address_item *,
 248                  const uschar *, const char *, ...) PRINTF_FUNCTION(4,5);
 249 extern BOOL    moan_to_sender(int, error_block *, header_line *, FILE *, BOOL);
 250 extern void    moan_write_from(FILE *);
 251 extern FILE   *modefopen(const uschar *, const char *, mode_t);
 252
 253 extern void   open_cutthrough_connection( address_item * addr );
 254
 255 extern uschar *parse_extract_address(uschar *, uschar **, int *, int *, int *,
 256                  BOOL);
 257 extern int     parse_forward_list(uschar *, int, address_item **, uschar **,
 258                  uschar *, uschar *, error_block **);
 259 extern uschar *parse_find_address_end(uschar *, BOOL);
 260 extern uschar *parse_find_at(uschar *);
 261 extern uschar *parse_fix_phrase(uschar *, int, uschar *, int);
 262 extern uschar *parse_message_id(uschar *, uschar **, uschar **);
 263 extern uschar *parse_quote_2047(uschar *, int, uschar *, uschar *, int, BOOL);
 264 extern uschar *parse_date_time(uschar *str, time_t *t);
 265 extern int     vaguely_random_number(int);
 266 #ifdef SUPPORT_TLS
 267 extern int     vaguely_random_number_fallback(int);
 268 #endif
 269
 270 extern BOOL    queue_action(uschar *, int, uschar **, int, int);
 271 extern void    queue_check_only(void);
 272 extern void    queue_list(int, uschar **, int);
 273 extern void    queue_count(void);
 274 extern void    queue_run(uschar *, uschar *, BOOL);
 275
 276 extern int     random_number(int);
 277 #ifdef WITH_CONTENT_SCAN
 278 extern int     recv_line(int, uschar *, int);
 279 #endif
 280 extern int     rda_interpret(redirect_block *, int, uschar *, uschar *,
 281                  uschar *, uschar *, uschar *, ugid_block *, address_item **,
 282                  uschar **, error_block **, int *, uschar *);
 283 extern int     rda_is_filter(const uschar *);
 284 extern BOOL    readconf_depends(driver_instance *, uschar *);
 285 extern void    readconf_driver_init(uschar *, driver_instance **,
 286                  driver_info *, int, void *, int, optionlist *, int);
 287 extern uschar *readconf_find_option(void *);
 288 extern void    readconf_main(void);
 289 extern void    readconf_print(uschar *, uschar *, BOOL);
 290 extern uschar *readconf_printtime(int);
 291 extern uschar *readconf_readname(uschar *, int, uschar *);
 292 extern int     readconf_readtime(uschar *, int, BOOL);
 293 extern void    readconf_rest();
 294 extern uschar *readconf_retry_error(uschar *, uschar *, int *, int *);
 295 extern void    read_message_body(BOOL);
 296 extern void    receive_bomb_out(uschar *, uschar *);
 297 extern BOOL    receive_check_fs(int);
 298 extern BOOL    receive_check_set_sender(uschar *);
 299 extern BOOL    receive_msg(BOOL);
 300 extern int     receive_statvfs(BOOL, int *);
 301 extern void    receive_swallow_smtp(void);
 302 #ifdef WITH_CONTENT_SCAN
 303 extern int     regex(uschar **);
 304 #endif
 305 extern BOOL    regex_match_and_setup(const pcre *, uschar *, int, int);
 306 extern const pcre *regex_must_compile(uschar *, BOOL, BOOL);
 307 extern void    retry_add_item(address_item *, uschar *, int);
 308 extern BOOL    retry_check_address(uschar *, host_item *, uschar *, BOOL,
 309                  uschar **, uschar **);
 310 extern retry_config *retry_find_config(uschar *, uschar *, int, int);
 311 extern BOOL    retry_ultimate_address_timeout(uschar *, uschar *,
 312                  dbdata_retry *, time_t);
 313 extern void    retry_update(address_item **, address_item **, address_item **);
 314 extern uschar *rewrite_address(uschar *, BOOL, BOOL, rewrite_rule *, int);
 315 extern uschar *rewrite_address_qualify(uschar *, BOOL);
 316 extern header_line *rewrite_header(header_line *, uschar *, uschar *,
 317                rewrite_rule *, int, BOOL);
 318 extern uschar *rewrite_one(uschar *, int, BOOL *, BOOL, uschar *,
 319                  rewrite_rule *);
 320 extern void    rewrite_test(uschar *);
 321 extern uschar *rfc2047_decode2(uschar *, BOOL, uschar *, int, int *, int *,
 322                  uschar **);
 323 extern int     route_address(address_item *, address_item **, address_item **,
 324                  address_item **, address_item **, int);
 325 extern int     route_check_prefix(uschar *, uschar *);
 326 extern int     route_check_suffix(uschar *, uschar *);
 327 extern BOOL    route_findgroup(uschar *, gid_t *);
 328 extern BOOL    route_finduser(uschar *, struct passwd **, uid_t *);
 329 extern BOOL    route_find_expanded_group(uschar *, uschar *, uschar *, gid_t *,
 330                  uschar **);
 331 extern BOOL    route_find_expanded_user(uschar *, uschar *, uschar *,
 332                  struct passwd **, uid_t *, uschar **);
 333 extern void    route_init(void);
 334 extern void    route_tidyup(void);
 335
 336 extern uschar *search_find(void *, uschar *, uschar *, int, uschar *, int,
 337                  int, int *);
 338 extern int     search_findtype(uschar *, int);
 339 extern int     search_findtype_partial(uschar *, int *, uschar **, int *,
 340                  int *);
 341 extern void   *search_open(uschar *, int, int, uid_t *, gid_t *);
 342 extern void    search_tidyup(void);
 343 extern void    set_process_info(const char *, ...) PRINTF_FUNCTION(1,2);
 344 extern void    sha1_end(sha1 *, const uschar *, int, uschar *);
 345 extern void    sha1_mid(sha1 *, const uschar *);
 346 extern void    sha1_start(sha1 *);
 347 extern int     sieve_interpret(uschar *, int, uschar *, uschar *, uschar *,
 348                  uschar *, address_item **, uschar **);
 349 extern void    sigalrm_handler(int);
 350 extern BOOL    smtp_buffered(void);
 351 extern void    smtp_closedown(uschar *);
 352 extern int     smtp_connect(host_item *, int, int, uschar *, int, BOOL, const uschar *
 353 #ifdef EXPERIMENTAL_EVENT
 354                        , uschar *
 355 #endif
 356                        );
 357 extern int     smtp_feof(void);
 358 extern int     smtp_ferror(void);
 359 extern uschar *smtp_get_connection_info(void);
 360 extern BOOL    smtp_get_interface(uschar *, int, address_item *, BOOL *,
 361                  uschar **, uschar *);
 362 extern BOOL    smtp_get_port(uschar *, address_item *, int *, uschar *);
 363 extern int     smtp_getc(void);
 364 extern int     smtp_handle_acl_fail(int, int, uschar *, uschar *);
 365 extern void    smtp_log_no_mail(void);
 366 extern void    smtp_message_code(uschar **, int *, uschar **, uschar **);
 367 extern BOOL    smtp_read_response(smtp_inblock *, uschar *, int, int, int);
 368 extern void    smtp_respond(uschar *, int, BOOL, uschar *);
 369 extern void    smtp_notquit_exit(uschar *, uschar *, uschar *, ...);
 370 extern void    smtp_send_prohibition_message(int, uschar *);
 371 extern int     smtp_setup_msg(void);
 372 extern BOOL    smtp_start_session(void);
 373 extern int     smtp_ungetc(int);
 374 extern BOOL    smtp_verify_helo(void);
 375 extern int     smtp_write_command(smtp_outblock *, BOOL, const char *, ...) PRINTF_FUNCTION(3,4);
 376 #ifdef WITH_CONTENT_SCAN
 377 extern int     spam(uschar **);
 378 extern FILE   *spool_mbox(unsigned long *, uschar *);
 379 #endif
 380 extern BOOL    spool_move_message(uschar *, uschar *, uschar *, uschar *);
 381 extern BOOL    spool_open_datafile(uschar *);
 382 extern int     spool_open_temp(uschar *);
 383 extern int     spool_read_header(uschar *, BOOL, BOOL);
 384 extern int     spool_write_header(uschar *, int, uschar **);
 385 extern int     stdin_getc(void);
 386 extern int     stdin_feof(void);
 387 extern int     stdin_ferror(void);
 388 extern int     stdin_ungetc(int);
 389 extern uschar *string_append(uschar *, int *, int *, int, ...);
 390 extern uschar *string_append_listele(uschar *, uschar, const uschar *);
 391 extern uschar *string_base62(unsigned long int);
 392 extern uschar *string_cat(uschar *, int *, int *, const uschar *, int);
 393 extern uschar *string_copy_dnsdomain(uschar *);
 394 extern uschar *string_copy_malloc(uschar *);
 395 extern uschar *string_copylc(uschar *);
 396 extern uschar *string_copynlc(uschar *, int);
 397 extern uschar *string_dequote(uschar **);
 398 extern BOOL    string_format(uschar *, int, const char *, ...) ALMOST_PRINTF(3,4);
 399 extern uschar *string_format_size(int, uschar *);
 400 extern int     string_interpret_escape(uschar **);
 401 extern int     string_is_ip_address(const uschar *, int *);
 402 extern uschar *string_log_address(address_item *, BOOL, BOOL);
 403 extern uschar *string_nextinlist(uschar **, int *, uschar *, int);
 404 extern uschar *string_open_failed(int, const char *, ...) PRINTF_FUNCTION(2,3);
 405 extern uschar *string_printing2(uschar *, BOOL);
 406 extern uschar *string_split_message(uschar *);
 407 extern uschar *string_unprinting(uschar *);
 408 extern BOOL    string_vformat(uschar *, int, const char *, va_list);
 409 extern int     strcmpic(const uschar *, const uschar *);
 410 extern int     strncmpic(const uschar *, const uschar *, int);
 411 extern uschar *strstric(uschar *, uschar *, BOOL);
 412
 413 extern uschar *tod_stamp(int);
 414
 415 extern void    tls_modify_variables(tls_support *);
 416 extern BOOL    transport_check_waiting(uschar *, uschar *, int, uschar *,
 417                  BOOL *);
 418 extern void    transport_init(void);
 419 extern BOOL    transport_pass_socket(uschar *, uschar *, uschar *, uschar *,
 420                  int);
 421 extern uschar *transport_rcpt_address(address_item *, BOOL);
 422 extern BOOL    transport_set_up_command(uschar ***, uschar *, BOOL, int,
 423                  address_item *, uschar *, uschar **);
 424 extern void    transport_update_waiting(host_item *, uschar *);
 425 extern BOOL    transport_write_block(int, uschar *, int);
 426 extern BOOL    transport_write_string(int, const char *, ...);
 427 extern BOOL    transport_headers_send(address_item *, int, uschar *, uschar *,
 428                  BOOL (*)(int, uschar *, int, BOOL), BOOL, rewrite_rule *, int);
 429 extern BOOL    transport_write_message(address_item *, int, int, int, uschar *,
 430                  uschar *, uschar *, uschar *, rewrite_rule *, int);
 431 extern void    tree_add_duplicate(uschar *, address_item *);
 432 extern void    tree_add_nonrecipient(uschar *);
 433 extern void    tree_add_unusable(host_item *);
 434 extern int     tree_insertnode(tree_node **, tree_node *);
 435 extern tree_node *tree_search(tree_node *, uschar *);
 436 extern void    tree_write(tree_node *, FILE *);
 437 extern void    tree_walk(tree_node *, void (*)(uschar*, uschar*, void*), void *);
 438
 439 #ifdef WITH_CONTENT_SCAN
 440 extern void    unspool_mbox(void);
 441 #endif
 442
 443 extern int     verify_address(address_item *, FILE *, int, int, int, int,
 444                  uschar *, uschar *, BOOL *);
 445 extern int     verify_check_dnsbl(uschar **);
 446 extern int     verify_check_header_address(uschar **, uschar **, int, int, int,
 447                  uschar *, uschar *, int, int *);
 448 extern int     verify_check_headers(uschar **);
 449 extern int     verify_check_header_names_ascii(uschar **);
 450 extern int     verify_check_host(uschar **);
 451 extern int     verify_check_notblind(void);
 452 extern int     verify_check_this_host(uschar **, unsigned int *, uschar*,
 453                  uschar *, uschar **);
 454 extern address_item *verify_checked_sender(uschar *);
 455 extern void    verify_get_ident(int);
 456 extern BOOL    verify_sender(int *, uschar **);
 457 extern BOOL    verify_sender_preliminary(int *, uschar **);
 458 extern void    version_init(void);
 459
 460 extern ssize_t write_to_fd_buf(int, const uschar *, size_t);
 461
 462 /* vi: aw
 463 */
 464 /* End of functions.h */