Docs: document ancillary info for more event types. Bug 2313

[users/heiko/exim.git] / src / src / functions.h

diff --git a/src/src/functions.h b/src/src/functions.h
index c6cb30119f860c87040bc1cbfa2aa2961c2cdb64..920f3d96fc4b5fb4b0dc15cbce6e65afb47abd96 100644 (file)
--- a/src/src/functions.h
+++ b/src/src/functions.h
@@ -2,7 +2,7 @@
 *     Exim - an Internet mail transport agent    *
 *************************************************/
 
 *     Exim - an Internet mail transport agent    *
 *************************************************/
 

-/* Copyright (c) University of Cambridge 1995 - 2013 */
+/* Copyright (c) University of Cambridge 1995 - 2018 */

 /* See the file NOTICE for conditions of use and distribution. */
 
 
 /* See the file NOTICE for conditions of use and distribution. */
 
 


@@ -13,8 +13,8 @@ are in in fact in separate headers. */
 
 
 #ifdef EXIM_PERL
 
 
 #ifdef EXIM_PERL

-extern uschar *call_perl_cat(uschar *, int *, int *, uschar **, uschar *,
-                 uschar **);
+extern gstring *call_perl_cat(gstring *, uschar **, uschar *,
+                 uschar **) WARN_UNUSED_RESULT;

 extern void    cleanup_perl(void);
 extern uschar *init_perl(uschar *);
 #endif
 extern void    cleanup_perl(void);
 extern uschar *init_perl(uschar *);
 #endif


@@ -25,27 +25,59 @@ extern const char *
                std_dh_prime_default(void);
 extern const char *
                std_dh_prime_named(const uschar *);
                std_dh_prime_default(void);
 extern const char *
                std_dh_prime_named(const uschar *);

-extern int     tls_client_start(int, host_item *, address_item *,
-                 uschar *, uschar *, uschar *, uschar *, uschar *, uschar *,
-# ifdef EXPERIMENTAL_OCSP
-                 uschar *,
+
+extern uschar * tls_cert_crl_uri(void *, uschar * mod);
+extern uschar * tls_cert_ext_by_oid(void *, uschar *, int);
+extern uschar * tls_cert_issuer(void *, uschar * mod);
+extern uschar * tls_cert_not_before(void *, uschar * mod);
+extern uschar * tls_cert_not_after(void *, uschar * mod);
+extern uschar * tls_cert_ocsp_uri(void *, uschar * mod);
+extern uschar * tls_cert_serial_number(void *, uschar * mod);
+extern uschar * tls_cert_signature(void *, uschar * mod);
+extern uschar * tls_cert_signature_algorithm(void *, uschar * mod);
+extern uschar * tls_cert_subject(void *, uschar * mod);
+extern uschar * tls_cert_subject_altname(void *, uschar * mod);
+extern uschar * tls_cert_version(void *, uschar * mod);
+
+extern uschar * tls_cert_der_b64(void * cert);
+extern uschar * tls_cert_fprt_md5(void *);
+extern uschar * tls_cert_fprt_sha1(void *);
+extern uschar * tls_cert_fprt_sha256(void *);
+
+extern void *  tls_client_start(int, host_item *, address_item *,
+                transport_instance *,
+# ifdef SUPPORT_DANE
+               dns_answer *,

 # endif
 # endif

-                 int, int);
-extern void    tls_close(BOOL, BOOL);
+               tls_support *, uschar **);
+extern void    tls_close(void *, int);
+extern BOOL    tls_could_read(void);
+extern int     tls_export_cert(uschar *, size_t, void *);

 extern int     tls_feof(void);
 extern int     tls_ferror(void);
 extern int     tls_feof(void);
 extern int     tls_ferror(void);

-extern int     tls_getc(void);
-extern int     tls_read(BOOL, uschar *, size_t);
-extern int     tls_server_start(const uschar *);
+extern void    tls_free_cert(void **);
+extern int     tls_getc(unsigned);
+extern uschar *tls_getbuf(unsigned *);
+extern void    tls_get_cache(void);
+extern int     tls_import_cert(const uschar *, void **);
+extern int     tls_read(void *, uschar *, size_t);
+extern int     tls_server_start(const uschar *, uschar **);

 extern BOOL    tls_smtp_buffered(void);
 extern int     tls_ungetc(int);
 extern BOOL    tls_smtp_buffered(void);
 extern int     tls_ungetc(int);

-extern int     tls_write(BOOL, const uschar *, size_t);
+extern int     tls_write(void *, const uschar *, size_t, BOOL);

 extern uschar *tls_validate_require_cipher(void);
 extern void    tls_version_report(FILE *);
 extern uschar *tls_validate_require_cipher(void);
 extern void    tls_version_report(FILE *);

-#ifndef USE_GNUTLS
+# ifndef USE_GNUTLS

 extern BOOL    tls_openssl_options_parse(uschar *, long *);
 extern BOOL    tls_openssl_options_parse(uschar *, long *);

-#endif
-#endif
+# endif
+extern uschar * tls_field_from_dn(uschar *, const uschar *);
+extern BOOL    tls_is_name_for_cert(const uschar *, void *);
+
+# ifdef SUPPORT_DANE
+extern int     tlsa_lookup(const host_item *, dns_answer *, BOOL);
+# endif
+
+#endif /*SUPPORT_TLS*/

 
 
 /* Everything else... */
 
 
 /* Everything else... */


@@ -56,32 +88,69 @@ extern int     acl_eval(int, uschar *, uschar **, uschar **);
 
 extern tree_node *acl_var_create(uschar *);
 extern void    acl_var_write(uschar *, uschar *, void *);
 
 extern tree_node *acl_var_create(uschar *);
 extern void    acl_var_write(uschar *, uschar *, void *);

-extern uschar *auth_b64encode(uschar *, int);
-extern int     auth_b64decode(uschar *, uschar **);
-extern int     auth_call_pam(uschar *, uschar **);
+
+#ifdef EXPERIMENTAL_ARC
+extern void   *arc_ams_setup_sign_bodyhash(void);
+extern const uschar *arc_header_feed(gstring *, BOOL);
+extern gstring *arc_sign(const uschar *, gstring *, uschar **);
+extern void     arc_sign_init(void);
+extern const uschar *acl_verify_arc(void);
+extern uschar * fn_arc_domains(void);
+#endif
+
+extern void    assert_no_variables(void *, int, const char *, int);
+extern int     auth_call_pam(const uschar *, uschar **);

 extern int     auth_call_pwcheck(uschar *, uschar **);
 extern int     auth_call_pwcheck(uschar *, uschar **);

-extern int     auth_call_radius(uschar *, uschar **);
-extern int     auth_call_saslauthd(uschar *, uschar *, uschar *, uschar *,
-                 uschar **);
+extern int     auth_call_radius(const uschar *, uschar **);
+extern int     auth_call_saslauthd(const uschar *, const uschar *,
+                const uschar *, const uschar *, uschar **);

 extern int     auth_check_serv_cond(auth_instance *);
 extern int     auth_check_some_cond(auth_instance *, uschar *, uschar *, int);
 
 extern int     auth_check_serv_cond(auth_instance *);
 extern int     auth_check_some_cond(auth_instance *, uschar *, uschar *, int);
 

+

 extern int     auth_get_data(uschar **, uschar *, int);
 extern int     auth_get_no64_data(uschar **, uschar *);
 extern int     auth_get_data(uschar **, uschar *, int);
 extern int     auth_get_no64_data(uschar **, uschar *);

+extern void    auth_show_supported(FILE *);

 extern uschar *auth_xtextencode(uschar *, int);
 extern int     auth_xtextdecode(uschar *, uschar **);
 
 extern uschar *auth_xtextencode(uschar *, int);
 extern int     auth_xtextdecode(uschar *, uschar **);
 

-extern void    cancel_cutthrough_connection(const char *);
-extern int     check_host(void *, uschar *, uschar **, uschar **);
+#ifdef EXPERIMENTAL_ARC
+extern gstring *authres_arc(gstring *);
+#endif
+#ifndef DISABLE_DKIM
+extern gstring *authres_dkim(gstring *);
+#endif
+#ifdef EXPERIMENTAL_DMARC
+extern gstring *authres_dmarc(gstring *);
+#endif
+extern gstring *authres_smtpauth(gstring *);
+#ifdef SUPPORT_SPF
+extern gstring *authres_spf(gstring *);
+#endif
+
+extern uschar *b64encode(uschar *, int);
+extern int     b64decode(const uschar *, uschar **);
+extern int     bdat_getc(unsigned);
+extern uschar *bdat_getbuf(unsigned *);
+extern int     bdat_ungetc(int);
+extern void    bdat_flush_data(void);
+
+extern void    bits_clear(unsigned int *, size_t, int *);
+extern void    bits_set(unsigned int *, size_t, int *);
+
+extern void    cancel_cutthrough_connection(BOOL, const uschar *);
+extern int     check_host(void *, const uschar *, const uschar **, uschar **);

 extern uschar **child_exec_exim(int, BOOL, int *, BOOL, int, ...);
 extern uschar **child_exec_exim(int, BOOL, int *, BOOL, int, ...);

-extern pid_t   child_open_uid(uschar **, uschar **, int, uid_t *, gid_t *,
-                 int *, int *, uschar *, BOOL);
+extern pid_t   child_open_uid(const uschar **, const uschar **, int,
+                uid_t *, gid_t *, int *, int *, uschar *, BOOL);
+extern BOOL    cleanup_environment(void);
+extern void    cutthrough_data_puts(uschar *, int);
+extern void    cutthrough_data_put_nl(void);

 extern uschar *cutthrough_finaldot(void);
 extern BOOL    cutthrough_flush_send(void);
 extern BOOL    cutthrough_headers_send(void);
 extern BOOL    cutthrough_predata(void);
 extern uschar *cutthrough_finaldot(void);
 extern BOOL    cutthrough_flush_send(void);
 extern BOOL    cutthrough_headers_send(void);
 extern BOOL    cutthrough_predata(void);

-extern BOOL    cutthrough_puts(uschar *, int);
-extern BOOL    cutthrough_put_nl(void);
+extern void    release_cutthrough_connection(const uschar *);

 
 extern void    daemon_go(void);
 
 
 extern void    daemon_go(void);
 


@@ -90,54 +159,74 @@ extern int     dcc_process(uschar **);
 #endif
 
 extern void    debug_logging_activate(uschar *, uschar *);
 #endif
 
 extern void    debug_logging_activate(uschar *, uschar *);

-extern void    debug_print_argv(uschar **);
+extern void    debug_logging_stop(void);
+extern void    debug_print_argv(const uschar **);

 extern void    debug_print_ids(uschar *);
 extern void    debug_print_ids(uschar *);

+extern void    debug_printf_indent(const char *, ...) PRINTF_FUNCTION(1,2);

 extern void    debug_print_string(uschar *);
 extern void    debug_print_tree(tree_node *);
 extern void    debug_print_string(uschar *);
 extern void    debug_print_tree(tree_node *);

-extern void    debug_vprintf(const char *, va_list);
-extern void    decode_bits(unsigned int *, unsigned int *,
-                  int, int, uschar *, bit_table *, int, uschar *, int);
+extern void    debug_vprintf(int, const char *, va_list);
+extern void    decode_bits(unsigned int *, size_t, int *,
+                  uschar *, bit_table *, int, uschar *, int);

 extern address_item *deliver_make_addr(uschar *, BOOL);
 extern address_item *deliver_make_addr(uschar *, BOOL);

+extern void    deliver_init(void);

 extern void    delivery_log(int, address_item *, int, uschar *);
 extern int     deliver_message(uschar *, BOOL, BOOL);
 extern void    deliver_msglog(const char *, ...) PRINTF_FUNCTION(1,2);
 extern void    deliver_set_expansions(address_item *);
 extern int     deliver_split_address(address_item *);
 extern void    deliver_succeeded(address_item *);
 extern void    delivery_log(int, address_item *, int, uschar *);
 extern int     deliver_message(uschar *, BOOL, BOOL);
 extern void    deliver_msglog(const char *, ...) PRINTF_FUNCTION(1,2);
 extern void    deliver_set_expansions(address_item *);
 extern int     deliver_split_address(address_item *);
 extern void    deliver_succeeded(address_item *);

-#ifdef WITH_OLD_DEMIME
-extern int     demime(uschar **);
-#endif
+
+extern uschar *deliver_get_sender_address (uschar *id);
+extern void    delivery_re_exec(int);
+

 extern BOOL    directory_make(const uschar *, const uschar *, int, BOOL);
 #ifndef DISABLE_DKIM
 extern BOOL    directory_make(const uschar *, const uschar *, int, BOOL);
 #ifndef DISABLE_DKIM

-extern BOOL    dkim_transport_write_message(address_item *, int, int,
-                   int, uschar *, uschar *, uschar *, uschar *, rewrite_rule *,
-                   int, uschar *, uschar *, uschar *, uschar *, uschar *, uschar *);
+extern uschar *dkim_exim_query_dns_txt(uschar *);
+extern void    dkim_exim_sign_init(void);
+
+extern BOOL    dkim_transport_write_message(transport_ctx *,
+                 struct ob_dkim *, const uschar ** errstr);

 #endif
 extern dns_address *dns_address_from_rr(dns_answer *, dns_record *);
 #endif
 extern dns_address *dns_address_from_rr(dns_answer *, dns_record *);

-extern void    dns_build_reverse(uschar *, uschar *);
-extern void    dns_init(BOOL, BOOL);
-extern int     dns_basic_lookup(dns_answer *, uschar *, int);
-extern BOOL    dns_is_secure(dns_answer *);
-extern int     dns_lookup(dns_answer *, uschar *, int, uschar **);
-extern int     dns_special_lookup(dns_answer *, uschar *, int, uschar **);
-extern dns_record *dns_next_rr(dns_answer *, dns_scan *, int);
+extern int     dns_basic_lookup(dns_answer *, const uschar *, int);
+extern void    dns_build_reverse(const uschar *, uschar *);
+extern void    dns_init(BOOL, BOOL, BOOL);
+extern BOOL    dns_is_aa(const dns_answer *);
+extern BOOL    dns_is_secure(const dns_answer *);
+extern int     dns_lookup(dns_answer *, const uschar *, int, const uschar **);
+extern void    dns_pattern_init(void);
+extern int     dns_special_lookup(dns_answer *, const uschar *, int, const uschar **);
+extern dns_record *dns_next_rr(const dns_answer *, dns_scan *, int);

 extern uschar *dns_text_type(int);
 extern void    dscp_list_to_stream(FILE *);
 extern BOOL    dscp_lookup(const uschar *, int, int *, int *, int *);
 
 extern void    enq_end(uschar *);
 extern uschar *dns_text_type(int);
 extern void    dscp_list_to_stream(FILE *);
 extern BOOL    dscp_lookup(const uschar *, int, int *, int *, int *);
 
 extern void    enq_end(uschar *);

-extern BOOL    enq_start(uschar *);
-extern void    exim_exit(int);
+extern BOOL    enq_start(uschar *, unsigned);
+#ifndef DISABLE_EVENT
+extern uschar *event_raise(uschar *, const uschar *, uschar *);
+extern void    msg_event_raise(const uschar *, const address_item *);
+#endif
+extern const uschar * exim_errstr(int);
+extern void    exim_exit(int, const uschar *);

 extern void    exim_nullstd(void);
 extern void    exim_setugid(uid_t, gid_t, BOOL, uschar *);
 extern void    exim_nullstd(void);
 extern void    exim_setugid(uid_t, gid_t, BOOL, uschar *);

-extern int     exim_tvcmp(struct timeval *, struct timeval *);

 extern void    exim_wait_tick(struct timeval *, int);
 extern void    exim_wait_tick(struct timeval *, int);

+extern int     exp_bool(address_item *addr,
+  uschar *mtype, uschar *mname, unsigned dgb_opt, uschar *oname, BOOL bvalue,
+  uschar *svalue, BOOL *rvalue);

 extern BOOL    expand_check_condition(uschar *, uschar *, uschar *);
 extern BOOL    expand_check_condition(uschar *, uschar *, uschar *);

-extern uschar *expand_string(uschar *);
-extern uschar *expand_string_copy(uschar *);
+extern uschar *expand_file_big_buffer(const uschar *);
+extern uschar *expand_string(uschar *);        /* public, cannot make const */
+extern const uschar *expand_cstring(const uschar *); /* ... so use this one */
+extern uschar *expand_hide_passwords(uschar * );
+extern uschar *expand_string_copy(const uschar *);

 extern int_eximarith_t expand_string_integer(uschar *, BOOL);
 extern void    modify_variable(uschar *, void *);
 
 extern int_eximarith_t expand_string_integer(uschar *, BOOL);
 extern void    modify_variable(uschar *, void *);
 

+extern BOOL    fd_ready(int, int);
+

 extern int     filter_interpret(uschar *, int, address_item **, uschar **);
 extern BOOL    filter_personal(string_item *, BOOL);
 extern BOOL    filter_runtest(int, uschar *, BOOL, BOOL);
 extern int     filter_interpret(uschar *, int, address_item **, uschar **);
 extern BOOL    filter_personal(string_item *, BOOL);
 extern BOOL    filter_runtest(int, uschar *, BOOL, BOOL);


@@ -145,21 +234,24 @@ extern BOOL    filter_system_interpret(address_item **, uschar **);
 
 extern uschar * fn_hdrs_added(void);
 
 
 extern uschar * fn_hdrs_added(void);
 

+extern void    gstring_reset_unused(gstring *);
+

 extern void    header_add(int, const char *, ...);
 extern int     header_checkname(header_line *, BOOL);
 extern BOOL    header_match(uschar *, BOOL, BOOL, string_item *, int, ...);
 extern int     host_address_extract_port(uschar *);
 extern uschar *host_and_ident(BOOL);
 extern void    header_add(int, const char *, ...);
 extern int     header_checkname(header_line *, BOOL);
 extern BOOL    header_match(uschar *, BOOL, BOOL, string_item *, int, ...);
 extern int     host_address_extract_port(uschar *);
 extern uschar *host_and_ident(BOOL);

-extern int     host_aton(uschar *, int *);
-extern void    host_build_hostlist(host_item **, uschar *, BOOL);
-extern ip_address_item *host_build_ifacelist(uschar *, uschar *);
+extern int     host_aton(const uschar *, int *);
+extern void    host_build_hostlist(host_item **, const uschar *, BOOL);
+extern ip_address_item *host_build_ifacelist(const uschar *, uschar *);

 extern void    host_build_log_info(void);
 extern void    host_build_sender_fullhost(void);
 extern void    host_build_log_info(void);
 extern void    host_build_sender_fullhost(void);

-extern BOOL    host_find_byname(host_item *, uschar *, int, uschar **, BOOL);
-extern int     host_find_bydns(host_item *, uschar *, int, uschar *, uschar *,
-                 uschar *,uschar **, BOOL *);
+extern int     host_find_byname(host_item *, const uschar *, int,
+                               const uschar **, BOOL);
+extern int     host_find_bydns(host_item *, const uschar *, int, uschar *, uschar *,
+                 uschar *, const dnssec_domains *, const uschar **, BOOL *);

 extern ip_address_item *host_find_interfaces(void);
 extern ip_address_item *host_find_interfaces(void);

-extern BOOL    host_is_in_net(uschar *, uschar *, int);
+extern BOOL    host_is_in_net(const uschar *, const uschar *, int);

 extern BOOL    host_is_tls_on_connect_port(int);
 extern int     host_item_get_port(host_item *);
 extern void    host_mask(int, int *, int);
 extern BOOL    host_is_tls_on_connect_port(int);
 extern int     host_item_get_port(host_item *);
 extern void    host_mask(int, int *, int);


@@ -168,32 +260,51 @@ extern int     host_nmtoa(int, int *, int, uschar *, int);
 extern uschar *host_ntoa(int, const void *, uschar *, int *);
 extern int     host_scan_for_local_hosts(host_item *, host_item **, BOOL *);
 
 extern uschar *host_ntoa(int, const void *, uschar *, int *);
 extern int     host_scan_for_local_hosts(host_item *, host_item **, BOOL *);
 

+extern uschar *imap_utf7_encode(uschar *, const uschar *,
+                                uschar, uschar *, uschar **);
+

 extern void    invert_address(uschar *, uschar *);
 extern void    invert_address(uschar *, uschar *);

+extern int     ip_addr(void *, int, const uschar *, int);

 extern int     ip_bind(int, int, uschar *, int);
 extern int     ip_bind(int, int, uschar *, int);

-extern int     ip_connect(int, int, uschar *, int, int);
+extern int     ip_connect(int, int, const uschar *, int, int, const blob *);
+extern int     ip_connectedsocket(int, const uschar *, int, int,
+                 int, host_item *, uschar **, const blob *);

 extern int     ip_get_address_family(int);
 extern int     ip_get_address_family(int);

-extern void    ip_keepalive(int, uschar *, BOOL);
-extern int     ip_recv(int, uschar *, int, int);
+extern void    ip_keepalive(int, const uschar *, BOOL);
+extern int     ip_recv(client_conn_ctx *, uschar *, int, int);

 extern int     ip_socket(int, int);
 
 extern int     ip_socket(int, int);
 

+extern int     ip_tcpsocket(const uschar *, uschar **, int);
+extern int     ip_unixsocket(const uschar *, uschar **);
+extern int     ip_streamsocket(const uschar *, uschar **, int);
+
+extern int     ipv6_nmtoa(int *, uschar *);
+

 extern uschar *local_part_quote(uschar *);
 extern int     log_create(uschar *);
 extern int     log_create_as_exim(uschar *);
 extern void    log_close_all(void);
 
 extern uschar *local_part_quote(uschar *);
 extern int     log_create(uschar *);
 extern int     log_create_as_exim(uschar *);
 extern void    log_close_all(void);
 

+extern macro_item * macro_create(const uschar *, const uschar *, BOOL);
+extern BOOL    macro_read_assignment(uschar *);
+extern uschar *macros_expand(int, int *, BOOL *);
+extern void    mainlog_close(void);

 #ifdef WITH_CONTENT_SCAN
 #ifdef WITH_CONTENT_SCAN

-extern int     malware(uschar **);
+extern int     malware(const uschar *, int);

 extern int     malware_in_file(uschar *);
 extern int     malware_in_file(uschar *);

+extern void    malware_init(void);
+extern void    malware_show_supported(FILE *);

 #endif
 #endif

-extern int     match_address_list(uschar *, BOOL, BOOL, uschar **,
-                 unsigned int *, int, int, uschar **);
-extern int     match_check_list(uschar **, int, tree_node **, unsigned int **,
-                 int(*)(void *, uschar *, uschar **, uschar **), void *, int,
-                 uschar *, uschar **);
-extern int     match_isinlist(uschar *, uschar **, int, tree_node **,
-                 unsigned int *, int, BOOL, uschar **);
-extern int     match_check_string(uschar *, uschar *, int, BOOL, BOOL, BOOL,
-                 uschar **);
+extern int     match_address_list(const uschar *, BOOL, BOOL, const uschar **,
+                 unsigned int *, int, int, const uschar **);
+extern int     match_address_list_basic(const uschar *, const uschar **, int);
+extern int     match_check_list(const uschar **, int, tree_node **, unsigned int **,
+                 int(*)(void *, const uschar *, const uschar **, uschar **), void *, int,
+                 const uschar *, const uschar **);
+extern int     match_isinlist(const uschar *, const uschar **, int, tree_node **,
+                 unsigned int *, int, BOOL, const uschar **);
+extern int     match_check_string(const uschar *, const uschar *, int, BOOL, BOOL, BOOL,
+                 const uschar **);

 extern void    md5_end(md5 *, const uschar *, int, uschar *);
 extern void    md5_mid(md5 *, const uschar *);
 extern void    md5_start(md5 *);
 extern void    md5_end(md5 *, const uschar *, int, uschar *);
 extern void    md5_mid(md5 *, const uschar *);
 extern void    md5_start(md5 *);


@@ -202,30 +313,34 @@ extern void    millisleep(int);
 struct mime_boundary_context;
 extern int     mime_acl_check(uschar *acl, FILE *f,
                  struct mime_boundary_context *, uschar **, uschar **);
 struct mime_boundary_context;
 extern int     mime_acl_check(uschar *acl, FILE *f,
                  struct mime_boundary_context *, uschar **, uschar **);

-extern int     mime_decode(uschar **);
-extern int     mime_regex(uschar **);
+extern int     mime_decode(const uschar **);
+extern ssize_t mime_decode_base64(FILE *, FILE *, uschar *);
+extern int     mime_regex(const uschar **);
+extern void    mime_set_anomaly(int);

 #endif
 extern uschar *moan_check_errorcopy(uschar *);
 extern BOOL    moan_skipped_syntax_errors(uschar *, error_block *, uschar *,
                  BOOL, uschar *);
 extern void    moan_smtp_batch(uschar *, const char *, ...) PRINTF_FUNCTION(2,3);
 #endif
 extern uschar *moan_check_errorcopy(uschar *);
 extern BOOL    moan_skipped_syntax_errors(uschar *, error_block *, uschar *,
                  BOOL, uschar *);
 extern void    moan_smtp_batch(uschar *, const char *, ...) PRINTF_FUNCTION(2,3);

+extern BOOL    moan_send_message(uschar *, int, error_block *eblock,
+                header_line *, FILE *, uschar *);

 extern void    moan_tell_someone(uschar *, address_item *,
                  const uschar *, const char *, ...) PRINTF_FUNCTION(4,5);
 extern BOOL    moan_to_sender(int, error_block *, header_line *, FILE *, BOOL);
 extern void    moan_write_from(FILE *);
 extern FILE   *modefopen(const uschar *, const char *, mode_t);
 
 extern void    moan_tell_someone(uschar *, address_item *,
                  const uschar *, const char *, ...) PRINTF_FUNCTION(4,5);
 extern BOOL    moan_to_sender(int, error_block *, header_line *, FILE *, BOOL);
 extern void    moan_write_from(FILE *);
 extern FILE   *modefopen(const uschar *, const char *, mode_t);
 

-extern void   open_cutthrough_connection( address_item * addr );
+extern int     open_cutthrough_connection( address_item * addr );

 
 extern uschar *parse_extract_address(uschar *, uschar **, int *, int *, int *,
                  BOOL);
 extern int     parse_forward_list(uschar *, int, address_item **, uschar **,
 
 extern uschar *parse_extract_address(uschar *, uschar **, int *, int *, int *,
                  BOOL);
 extern int     parse_forward_list(uschar *, int, address_item **, uschar **,

-                 uschar *, uschar *, error_block **);
+                 const uschar *, uschar *, error_block **);

 extern uschar *parse_find_address_end(uschar *, BOOL);
 extern uschar *parse_find_at(uschar *);
 extern uschar *parse_find_address_end(uschar *, BOOL);
 extern uschar *parse_find_at(uschar *);

-extern uschar *parse_fix_phrase(uschar *, int, uschar *, int);
+extern const uschar *parse_fix_phrase(const uschar *, int, uschar *, int);

 extern uschar *parse_message_id(uschar *, uschar **, uschar **);
 extern uschar *parse_message_id(uschar *, uschar **, uschar **);

-extern uschar *parse_quote_2047(uschar *, int, uschar *, uschar *, int, BOOL);
+extern const uschar *parse_quote_2047(const uschar *, int, uschar *, uschar *, int, BOOL);

 extern uschar *parse_date_time(uschar *str, time_t *t);
 extern int     vaguely_random_number(int);
 #ifdef SUPPORT_TLS
 extern uschar *parse_date_time(uschar *str, time_t *t);
 extern int     vaguely_random_number(int);
 #ifdef SUPPORT_TLS


@@ -239,9 +354,6 @@ extern void    queue_count(void);
 extern void    queue_run(uschar *, uschar *, BOOL);
 
 extern int     random_number(int);
 extern void    queue_run(uschar *, uschar *, BOOL);
 
 extern int     random_number(int);

-#ifdef WITH_CONTENT_SCAN
-extern int     recv_line(int, uschar *, int);
-#endif

 extern int     rda_interpret(redirect_block *, int, uschar *, uschar *,
                  uschar *, uschar *, uschar *, ugid_block *, address_item **,
                  uschar **, error_block **, int *, uschar *);
 extern int     rda_interpret(redirect_block *, int, uschar *, uschar *,
                  uschar *, uschar *, uschar *, ugid_block *, address_item **,
                  uschar **, error_block **, int *, uschar *);


@@ -250,13 +362,15 @@ extern BOOL    readconf_depends(driver_instance *, uschar *);
 extern void    readconf_driver_init(uschar *, driver_instance **,
                  driver_info *, int, void *, int, optionlist *, int);
 extern uschar *readconf_find_option(void *);
 extern void    readconf_driver_init(uschar *, driver_instance **,
                  driver_info *, int, void *, int, optionlist *, int);
 extern uschar *readconf_find_option(void *);

-extern void    readconf_main(void);
-extern void    readconf_print(uschar *, uschar *, BOOL);
+extern void    readconf_main(BOOL);
+extern void    readconf_options_from_list(optionlist *, unsigned, const uschar *, uschar *);
+extern BOOL    readconf_print(uschar *, uschar *, BOOL);

 extern uschar *readconf_printtime(int);
 extern uschar *readconf_readname(uschar *, int, uschar *);
 extern uschar *readconf_printtime(int);
 extern uschar *readconf_readname(uschar *, int, uschar *);

-extern int     readconf_readtime(uschar *, int, BOOL);
-extern void    readconf_rest();
-extern uschar *readconf_retry_error(uschar *, uschar *, int *, int *);
+extern int     readconf_readtime(const uschar *, int, BOOL);
+extern void    readconf_rest(void);
+extern uschar *readconf_retry_error(const uschar *, const uschar *, int *, int *);
+extern void    readconf_save_config(const uschar *);

 extern void    read_message_body(BOOL);
 extern void    receive_bomb_out(uschar *, uschar *);
 extern BOOL    receive_check_fs(int);
 extern void    read_message_body(BOOL);
 extern void    receive_bomb_out(uschar *, uschar *);
 extern BOOL    receive_check_fs(int);


@@ -265,20 +379,21 @@ extern BOOL    receive_msg(BOOL);
 extern int     receive_statvfs(BOOL, int *);
 extern void    receive_swallow_smtp(void);
 #ifdef WITH_CONTENT_SCAN
 extern int     receive_statvfs(BOOL, int *);
 extern void    receive_swallow_smtp(void);
 #ifdef WITH_CONTENT_SCAN

-extern int     regex(uschar **);
+extern int     regex(const uschar **);

 #endif
 #endif

-extern BOOL    regex_match_and_setup(const pcre *, uschar *, int, int);
-extern const pcre *regex_must_compile(uschar *, BOOL, BOOL);
+extern BOOL    regex_match_and_setup(const pcre *, const uschar *, int, int);
+extern const pcre *regex_must_compile(const uschar *, BOOL, BOOL);

 extern void    retry_add_item(address_item *, uschar *, int);
 extern void    retry_add_item(address_item *, uschar *, int);

-extern BOOL    retry_check_address(uschar *, host_item *, uschar *, BOOL,
+extern BOOL    retry_check_address(const uschar *, host_item *, uschar *, BOOL,

                  uschar **, uschar **);
                  uschar **, uschar **);

-extern retry_config *retry_find_config(uschar *, uschar *, int, int);
-extern BOOL    retry_ultimate_address_timeout(uschar *, uschar *,
+extern retry_config *retry_find_config(const uschar *, const uschar *, int, int);
+extern BOOL    retry_ultimate_address_timeout(uschar *, const uschar *,

                  dbdata_retry *, time_t);
 extern void    retry_update(address_item **, address_item **, address_item **);
 extern uschar *rewrite_address(uschar *, BOOL, BOOL, rewrite_rule *, int);
 extern uschar *rewrite_address_qualify(uschar *, BOOL);
                  dbdata_retry *, time_t);
 extern void    retry_update(address_item **, address_item **, address_item **);
 extern uschar *rewrite_address(uschar *, BOOL, BOOL, rewrite_rule *, int);
 extern uschar *rewrite_address_qualify(uschar *, BOOL);

-extern header_line *rewrite_header(header_line *, uschar *, uschar *,
+extern header_line *rewrite_header(header_line *,
+               const uschar *, const uschar *,

                rewrite_rule *, int, BOOL);
 extern uschar *rewrite_one(uschar *, int, BOOL *, BOOL, uschar *,
                  rewrite_rule *);
                rewrite_rule *, int, BOOL);
 extern uschar *rewrite_one(uschar *, int, BOOL *, BOOL, uschar *,
                  rewrite_rule *);


@@ -287,132 +402,187 @@ extern uschar *rfc2047_decode2(uschar *, BOOL, uschar *, int, int *, int *,
                  uschar **);
 extern int     route_address(address_item *, address_item **, address_item **,
                  address_item **, address_item **, int);
                  uschar **);
 extern int     route_address(address_item *, address_item **, address_item **,
                  address_item **, address_item **, int);

-extern int     route_check_prefix(uschar *, uschar *);
-extern int     route_check_suffix(uschar *, uschar *);
+extern int     route_check_prefix(const uschar *, const uschar *);
+extern int     route_check_suffix(const uschar *, const uschar *);

 extern BOOL    route_findgroup(uschar *, gid_t *);
 extern BOOL    route_findgroup(uschar *, gid_t *);

-extern BOOL    route_finduser(uschar *, struct passwd **, uid_t *);
+extern BOOL    route_finduser(const uschar *, struct passwd **, uid_t *);

 extern BOOL    route_find_expanded_group(uschar *, uschar *, uschar *, gid_t *,
                  uschar **);
 extern BOOL    route_find_expanded_user(uschar *, uschar *, uschar *,
                  struct passwd **, uid_t *, uschar **);
 extern void    route_init(void);
 extern BOOL    route_find_expanded_group(uschar *, uschar *, uschar *, gid_t *,
                  uschar **);
 extern BOOL    route_find_expanded_user(uschar *, uschar *, uschar *,
                  struct passwd **, uid_t *, uschar **);
 extern void    route_init(void);

+extern void    route_show_supported(FILE *);

 extern void    route_tidyup(void);
 
 extern void    route_tidyup(void);
 

-extern uschar *search_find(void *, uschar *, uschar *, int, uschar *, int,
+extern uschar *search_find(void *, uschar *, uschar *, int, const uschar *, int,

                  int, int *);
                  int, int *);

-extern int     search_findtype(uschar *, int);
-extern int     search_findtype_partial(uschar *, int *, uschar **, int *,
+extern int     search_findtype(const uschar *, int);
+extern int     search_findtype_partial(const uschar *, int *, const uschar **, int *,

                  int *);
 extern void   *search_open(uschar *, int, int, uid_t *, gid_t *);
 extern void    search_tidyup(void);
 extern void    set_process_info(const char *, ...) PRINTF_FUNCTION(1,2);
                  int *);
 extern void   *search_open(uschar *, int, int, uid_t *, gid_t *);
 extern void    search_tidyup(void);
 extern void    set_process_info(const char *, ...) PRINTF_FUNCTION(1,2);

-extern void    sha1_end(sha1 *, const uschar *, int, uschar *);
-extern void    sha1_mid(sha1 *, const uschar *);
-extern void    sha1_start(sha1 *);
+extern void    sha1_end(hctx *, const uschar *, int, uschar *);
+extern void    sha1_mid(hctx *, const uschar *);
+extern void    sha1_start(hctx *);

 extern int     sieve_interpret(uschar *, int, uschar *, uschar *, uschar *,
                  uschar *, address_item **, uschar **);
 extern void    sigalrm_handler(int);
 extern BOOL    smtp_buffered(void);
 extern void    smtp_closedown(uschar *);
 extern int     sieve_interpret(uschar *, int, uschar *, uschar *, uschar *,
                  uschar *, address_item **, uschar **);
 extern void    sigalrm_handler(int);
 extern BOOL    smtp_buffered(void);
 extern void    smtp_closedown(uschar *);

-extern int     smtp_connect(host_item *, int, int, uschar *, int, BOOL, const uschar *);
+extern void    smtp_command_timeout_exit(void);
+extern void    smtp_command_sigterm_exit(void);
+extern void    smtp_data_timeout_exit(void);
+extern void    smtp_data_sigint_exit(void);
+extern uschar *smtp_cmd_hist(void);
+extern int     smtp_connect(host_item *, int, uschar *, int,
+                transport_instance *);
+extern int     smtp_sock_connect(host_item *, int, int, uschar *,
+                transport_instance * tb, int, const blob *);

 extern int     smtp_feof(void);
 extern int     smtp_ferror(void);
 extern uschar *smtp_get_connection_info(void);
 extern int     smtp_feof(void);
 extern int     smtp_ferror(void);
 extern uschar *smtp_get_connection_info(void);

-extern BOOL    smtp_get_interface(uschar *, int, address_item *, BOOL *,
+extern BOOL    smtp_get_interface(uschar *, int, address_item *,

                  uschar **, uschar *);
 extern BOOL    smtp_get_port(uschar *, address_item *, int *, uschar *);
                  uschar **, uschar *);
 extern BOOL    smtp_get_port(uschar *, address_item *, int *, uschar *);

-extern int     smtp_getc(void);
+extern int     smtp_getc(unsigned);
+extern uschar *smtp_getbuf(unsigned *);
+extern void    smtp_get_cache(void);

 extern int     smtp_handle_acl_fail(int, int, uschar *, uschar *);
 extern void    smtp_log_no_mail(void);
 extern int     smtp_handle_acl_fail(int, int, uschar *, uschar *);
 extern void    smtp_log_no_mail(void);

-extern void    smtp_message_code(uschar **, int *, uschar **, uschar **);
-extern BOOL    smtp_read_response(smtp_inblock *, uschar *, int, int, int);
+extern void    smtp_message_code(uschar **, int *, uschar **, uschar **, BOOL);
+extern void    smtp_proxy_tls(void *, uschar *, size_t, int *, int);
+extern BOOL    smtp_read_response(void *, uschar *, int, int, int);
+extern void    smtp_reset(void *);

 extern void    smtp_respond(uschar *, int, BOOL, uschar *);
 extern void    smtp_notquit_exit(uschar *, uschar *, uschar *, ...);
 extern void    smtp_respond(uschar *, int, BOOL, uschar *);
 extern void    smtp_notquit_exit(uschar *, uschar *, uschar *, ...);

+extern void    smtp_port_for_connect(host_item *, int);

 extern void    smtp_send_prohibition_message(int, uschar *);
 extern int     smtp_setup_msg(void);
 extern BOOL    smtp_start_session(void);
 extern int     smtp_ungetc(int);
 extern BOOL    smtp_verify_helo(void);
 extern void    smtp_send_prohibition_message(int, uschar *);
 extern int     smtp_setup_msg(void);
 extern BOOL    smtp_start_session(void);
 extern int     smtp_ungetc(int);
 extern BOOL    smtp_verify_helo(void);

-extern int     smtp_write_command(smtp_outblock *, BOOL, const char *, ...) PRINTF_FUNCTION(3,4);
+extern int     smtp_write_command(void *, int, const char *, ...) PRINTF_FUNCTION(3,4);

 #ifdef WITH_CONTENT_SCAN
 #ifdef WITH_CONTENT_SCAN

-extern int     spam(uschar **);
-extern FILE   *spool_mbox(unsigned long *, uschar *);
+extern int     spam(const uschar **);
+extern FILE   *spool_mbox(unsigned long *, const uschar *, uschar **);

 #endif
 #endif

+extern void    spool_clear_header_globals(void);
+extern uschar *spool_dname(const uschar *, uschar *);
+extern uschar *spool_fname(const uschar *, const uschar *, const uschar *, const uschar *);

 extern BOOL    spool_move_message(uschar *, uschar *, uschar *, uschar *);
 extern BOOL    spool_move_message(uschar *, uschar *, uschar *, uschar *);

-extern BOOL    spool_open_datafile(uschar *);
+extern int     spool_open_datafile(uschar *);

 extern int     spool_open_temp(uschar *);
 extern int     spool_read_header(uschar *, BOOL, BOOL);
 extern int     spool_open_temp(uschar *);
 extern int     spool_read_header(uschar *, BOOL, BOOL);

+extern uschar *spool_sname(const uschar *, uschar *);

 extern int     spool_write_header(uschar *, int, uschar **);
 extern int     spool_write_header(uschar *, int, uschar **);

-extern int     stdin_getc(void);
+extern int     stdin_getc(unsigned);

 extern int     stdin_feof(void);
 extern int     stdin_ferror(void);
 extern int     stdin_ungetc(int);
 extern int     stdin_feof(void);
 extern int     stdin_ferror(void);
 extern int     stdin_ungetc(int);

-extern uschar *string_append(uschar *, int *, int *, int, ...);
+extern gstring *string_append(gstring *, int, ...) WARN_UNUSED_RESULT;
+extern gstring *string_append_listele(gstring *, uschar, const uschar *) WARN_UNUSED_RESULT;
+extern gstring *string_append_listele_n(gstring *, uschar, const uschar *, unsigned) WARN_UNUSED_RESULT;
+extern gstring *string_append2_listele_n(gstring *, const uschar *, const uschar *, unsigned) WARN_UNUSED_RESULT;

 extern uschar *string_base62(unsigned long int);
 extern uschar *string_base62(unsigned long int);

-extern uschar *string_cat(uschar *, int *, int *, const uschar *, int);
+extern gstring *string_cat (gstring *, const uschar *     ) WARN_UNUSED_RESULT;
+extern gstring *string_catn(gstring *, const uschar *, int) WARN_UNUSED_RESULT;
+extern int     string_compare_by_pointer(const void *, const void *);

 extern uschar *string_copy_dnsdomain(uschar *);
 extern uschar *string_copy_dnsdomain(uschar *);

-extern uschar *string_copy_malloc(uschar *);
-extern uschar *string_copylc(uschar *);
+extern uschar *string_copy_malloc(const uschar *);
+extern uschar *string_copylc(const uschar *);

 extern uschar *string_copynlc(uschar *, int);
 extern uschar *string_copynlc(uschar *, int);

-extern uschar *string_dequote(uschar **);
+extern uschar *string_dequote(const uschar **);

 extern BOOL    string_format(uschar *, int, const char *, ...) ALMOST_PRINTF(3,4);
 extern uschar *string_format_size(int, uschar *);
 extern BOOL    string_format(uschar *, int, const char *, ...) ALMOST_PRINTF(3,4);
 extern uschar *string_format_size(int, uschar *);

-extern int     string_interpret_escape(uschar **);
-extern int     string_is_ip_address(uschar *, int *);
-extern uschar *string_log_address(address_item *, BOOL, BOOL);
-extern uschar *string_nextinlist(uschar **, int *, uschar *, int);
+extern uschar *string_from_gstring(gstring *);
+extern gstring *string_get(unsigned);
+extern int     string_interpret_escape(const uschar **);
+extern int     string_is_ip_address(const uschar *, int *);
+#ifdef SUPPORT_I18N
+extern BOOL    string_is_utf8(const uschar *);
+#endif
+extern uschar *string_nextinlist(const uschar **, int *, uschar *, int);

 extern uschar *string_open_failed(int, const char *, ...) PRINTF_FUNCTION(2,3);
 extern uschar *string_open_failed(int, const char *, ...) PRINTF_FUNCTION(2,3);

-extern uschar *string_printing2(uschar *, BOOL);
+extern const uschar *string_printing2(const uschar *, BOOL);

 extern uschar *string_split_message(uschar *);
 extern uschar *string_split_message(uschar *);

+extern uschar *string_timediff(struct timeval *);
+extern uschar *string_timesince(struct timeval *);

 extern uschar *string_unprinting(uschar *);
 extern uschar *string_unprinting(uschar *);

+#ifdef SUPPORT_I18N
+extern uschar *string_address_utf8_to_alabel(const uschar *, uschar **);
+extern uschar *string_domain_alabel_to_utf8(const uschar *, uschar **);
+extern uschar *string_domain_utf8_to_alabel(const uschar *, uschar **);
+extern uschar *string_localpart_alabel_to_utf8(const uschar *, uschar **);
+extern uschar *string_localpart_utf8_to_alabel(const uschar *, uschar **);
+#endif

 extern BOOL    string_vformat(uschar *, int, const char *, va_list);
 extern int     strcmpic(const uschar *, const uschar *);
 extern int     strncmpic(const uschar *, const uschar *, int);
 extern uschar *strstric(uschar *, uschar *, BOOL);
 
 extern BOOL    string_vformat(uschar *, int, const char *, va_list);
 extern int     strcmpic(const uschar *, const uschar *);
 extern int     strncmpic(const uschar *, const uschar *, int);
 extern uschar *strstric(uschar *, uschar *, BOOL);
 

+#ifdef EXIM_TFO_PROBE
+extern void    tfo_probe(void);
+#endif
+extern void    timesince(struct timeval * diff, struct timeval * then);
+extern void    tls_modify_variables(tls_support *);

 extern uschar *tod_stamp(int);
 extern uschar *tod_stamp(int);

-extern BOOL    transport_check_waiting(uschar *, uschar *, int, uschar *,
-                 BOOL *);
+
+extern BOOL    transport_check_waiting(const uschar *, const uschar *, int, uschar *,
+                 BOOL *, oicf, void*);

 extern void    transport_init(void);
 extern void    transport_init(void);

-extern BOOL    transport_pass_socket(uschar *, uschar *, uschar *, uschar *,
+extern void    transport_do_pass_socket(const uschar *, const uschar *,
+                const uschar *, uschar *, int);
+extern BOOL    transport_pass_socket(const uschar *, const uschar *, const uschar *, uschar *,

                  int);
 extern uschar *transport_rcpt_address(address_item *, BOOL);
                  int);
 extern uschar *transport_rcpt_address(address_item *, BOOL);

-extern BOOL    transport_set_up_command(uschar ***, uschar *, BOOL, int,
-                 address_item *, uschar *, uschar **);
+extern BOOL    transport_set_up_command(const uschar ***, uschar *,
+                BOOL, int, address_item *, uschar *, uschar **);

 extern void    transport_update_waiting(host_item *, uschar *);
 extern void    transport_update_waiting(host_item *, uschar *);

-extern BOOL    transport_write_block(int, uschar *, int);
+extern BOOL    transport_write_block(transport_ctx *, uschar *, int, BOOL);
+extern void    transport_write_reset(int);

 extern BOOL    transport_write_string(int, const char *, ...);
 extern BOOL    transport_write_string(int, const char *, ...);

-extern BOOL    transport_write_message(address_item *, int, int, int, uschar *,
-                 uschar *, uschar *, uschar *, rewrite_rule *, int);
+extern BOOL    transport_headers_send(transport_ctx *,
+                 BOOL (*)(transport_ctx *, uschar *, int));
+extern void    transport_show_supported(FILE *);
+extern BOOL    transport_write_message(transport_ctx *, int);

 extern void    tree_add_duplicate(uschar *, address_item *);
 extern void    tree_add_nonrecipient(uschar *);
 extern void    tree_add_unusable(host_item *);
 extern int     tree_insertnode(tree_node **, tree_node *);
 extern void    tree_add_duplicate(uschar *, address_item *);
 extern void    tree_add_nonrecipient(uschar *);
 extern void    tree_add_unusable(host_item *);
 extern int     tree_insertnode(tree_node **, tree_node *);

-extern tree_node *tree_search(tree_node *, uschar *);
+extern tree_node *tree_search(tree_node *, const uschar *);

 extern void    tree_write(tree_node *, FILE *);
 extern void    tree_walk(tree_node *, void (*)(uschar*, uschar*, void*), void *);
 
 #ifdef WITH_CONTENT_SCAN
 extern void    unspool_mbox(void);
 #endif
 extern void    tree_write(tree_node *, FILE *);
 extern void    tree_walk(tree_node *, void (*)(uschar*, uschar*, void*), void *);
 
 #ifdef WITH_CONTENT_SCAN
 extern void    unspool_mbox(void);
 #endif

+#ifdef SUPPORT_I18N
+extern void    utf8_version_report(FILE *);
+#endif

 
 extern int     verify_address(address_item *, FILE *, int, int, int, int,
                  uschar *, uschar *, BOOL *);
 
 extern int     verify_address(address_item *, FILE *, int, int, int, int,
                  uschar *, uschar *, BOOL *);

-extern int     verify_check_dnsbl(uschar **);
+extern int     verify_check_dnsbl(int, const uschar **, uschar **);

 extern int     verify_check_header_address(uschar **, uschar **, int, int, int,
                  uschar *, uschar *, int, int *);
 extern int     verify_check_headers(uschar **);
 extern int     verify_check_header_names_ascii(uschar **);
 extern int     verify_check_host(uschar **);
 extern int     verify_check_notblind(void);
 extern int     verify_check_header_address(uschar **, uschar **, int, int, int,
                  uschar *, uschar *, int, int *);
 extern int     verify_check_headers(uschar **);
 extern int     verify_check_header_names_ascii(uschar **);
 extern int     verify_check_host(uschar **);
 extern int     verify_check_notblind(void);

-extern int     verify_check_this_host(uschar **, unsigned int *, uschar*,
-                 uschar *, uschar **);
+extern int     verify_check_given_host(uschar **, host_item *);
+extern int     verify_check_this_host(const uschar **, unsigned int *,
+                const uschar*, const uschar *, const uschar **);

 extern address_item *verify_checked_sender(uschar *);
 extern void    verify_get_ident(int);
 extern BOOL    verify_sender(int *, uschar **);
 extern BOOL    verify_sender_preliminary(int *, uschar **);
 extern void    version_init(void);
 
 extern address_item *verify_checked_sender(uschar *);
 extern void    verify_get_ident(int);
 extern BOOL    verify_sender(int *, uschar **);
 extern BOOL    verify_sender_preliminary(int *, uschar **);
 extern void    version_init(void);
 

+extern BOOL    write_chunk(transport_ctx *, uschar *, int);

 extern ssize_t write_to_fd_buf(int, const uschar *, size_t);
 
 extern ssize_t write_to_fd_buf(int, const uschar *, size_t);
 

+
+/* vi: aw
+*/

 /* End of functions.h */
 /* End of functions.h */