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