Avoid re-expansion in ${sort } CVE-2019-13917 OVE-20190718-0006

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

diff --git a/src/src/functions.h b/src/src/functions.h
index 963f48ed41fb1f1adba7cefe38b34f4d486e4f61..cab7a73630b1ef24c8264f9a9c85586e41a0522c 100644 (file)
--- a/src/src/functions.h
+++ b/src/src/functions.h
@@ -2,7 +2,7 @@
 *     Exim - an Internet mail transport agent    *
 *************************************************/
 
-/* Copyright (c) University of Cambridge 1995 - 2017 */
+/* Copyright (c) University of Cambridge 1995 - 2018 */
 /* See the file NOTICE for conditions of use and distribution. */
 
 
@@ -13,8 +13,8 @@ are in in fact in separate headers. */
 
 
 #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
@@ -44,13 +44,14 @@ extern uschar * tls_cert_fprt_md5(void *);
 extern uschar * tls_cert_fprt_sha1(void *);
 extern uschar * tls_cert_fprt_sha256(void *);
 
-extern int     tls_client_start(int, host_item *, address_item *,
+extern void *  tls_client_start(int, host_item *, address_item *,
                 transport_instance *,
-# ifdef EXPERIMENTAL_DANE
+# ifdef SUPPORT_DANE
                dns_answer *,
 # endif
-               uschar **);
-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);
@@ -59,11 +60,11 @@ 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(BOOL, uschar *, size_t);
+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 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 *);
 # ifndef USE_GNUTLS
@@ -72,7 +73,7 @@ extern BOOL    tls_openssl_options_parse(uschar *, long *);
 extern uschar * tls_field_from_dn(uschar *, const uschar *);
 extern BOOL    tls_is_name_for_cert(const uschar *, void *);
 
-# ifdef EXPERIMENTAL_DANE
+# ifdef SUPPORT_DANE
 extern int     tlsa_lookup(const host_item *, dns_answer *, BOOL);
 # endif
 
@@ -87,6 +88,16 @@ extern int     acl_eval(int, uschar *, uschar **, uschar **);
 
 extern tree_node *acl_var_create(uschar *);
 extern void    acl_var_write(uschar *, uschar *, void *);
+
+#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 **);
@@ -99,11 +110,26 @@ 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 void    auth_show_supported(FILE *);
 extern uschar *auth_xtextencode(uschar *, int);
 extern int     auth_xtextdecode(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(uschar *, uschar **);
+extern int     b64decode(const uschar *, uschar **);
 extern int     bdat_getc(unsigned);
 extern uschar *bdat_getbuf(unsigned *);
 extern int     bdat_ungetc(int);
@@ -156,6 +182,9 @@ extern void    delivery_re_exec(int);
 
 extern BOOL    directory_make(const uschar *, const uschar *, int, BOOL);
 #ifndef DISABLE_DKIM
+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
@@ -180,15 +209,15 @@ 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);
+extern void    exim_exit(int, const 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 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 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 * );
@@ -205,6 +234,8 @@ extern BOOL    filter_system_interpret(address_item **, uschar **);
 
 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, ...);
@@ -235,12 +266,12 @@ extern uschar *imap_utf7_encode(uschar *, const 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_connect(int, int, const uschar *, int, int, BOOL);
+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 **);
+                 int, host_item *, uschar **, const blob *);
 extern int     ip_get_address_family(int);
 extern void    ip_keepalive(int, const uschar *, BOOL);
-extern int     ip_recv(int, uschar *, int, int);
+extern int     ip_recv(client_conn_ctx *, uschar *, int, int);
 extern int     ip_socket(int, int);
 
 extern int     ip_tcpsocket(const uschar *, uschar **, int);
@@ -254,12 +285,15 @@ 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, BOOL);
+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
 extern int     malware(const uschar *, int);
 extern int     malware_in_file(uschar *);
 extern void    malware_init(void);
+extern void    malware_show_supported(FILE *);
 #endif
 extern int     match_address_list(const uschar *, BOOL, BOOL, const uschar **,
                  unsigned int *, int, int, const uschar **);
@@ -288,6 +322,8 @@ 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);
@@ -328,9 +364,7 @@ extern void    readconf_driver_init(uschar *, driver_instance **,
 extern uschar *readconf_find_option(void *);
 extern void    readconf_main(BOOL);
 extern void    readconf_options_from_list(optionlist *, unsigned, const uschar *, uschar *);
-extern void    readconf_options_routers(void);
-extern void    readconf_options_transports(void);
-extern void    readconf_print(uschar *, uschar *, BOOL);
+extern BOOL    readconf_print(uschar *, uschar *, BOOL);
 extern uschar *readconf_printtime(int);
 extern uschar *readconf_readname(uschar *, int, uschar *);
 extern int     readconf_readtime(const uschar *, int, BOOL);
@@ -342,7 +376,7 @@ extern void    receive_bomb_out(uschar *, uschar *);
 extern BOOL    receive_check_fs(int);
 extern BOOL    receive_check_set_sender(uschar *);
 extern BOOL    receive_msg(BOOL);
-extern int     receive_statvfs(BOOL, int *);
+extern int_eximarith_t receive_statvfs(BOOL, int *);
 extern void    receive_swallow_smtp(void);
 #ifdef WITH_CONTENT_SCAN
 extern int     regex(const uschar **);
@@ -377,6 +411,7 @@ extern BOOL    route_find_expanded_group(uschar *, uschar *, uschar *, gid_t *,
 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 uschar *search_find(void *, uschar *, uschar *, int, const uschar *, int,
@@ -395,10 +430,14 @@ extern int     sieve_interpret(uschar *, int, uschar *, uschar *, uschar *,
 extern void    sigalrm_handler(int);
 extern BOOL    smtp_buffered(void);
 extern void    smtp_closedown(uschar *);
-extern int     smtp_connect(host_item *, int, uschar *, int,
-                transport_instance *);
+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(smtp_connect_args *, const blob *);
 extern int     smtp_sock_connect(host_item *, int, int, uschar *,
-                transport_instance * tb, int);
+                transport_instance * tb, int, const blob *);
 extern int     smtp_feof(void);
 extern int     smtp_ferror(void);
 extern uschar *smtp_get_connection_info(void);
@@ -411,8 +450,9 @@ extern void    smtp_get_cache(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 **, BOOL);
-extern void    smtp_proxy_tls(uschar *, size_t, int, int);
-extern BOOL    smtp_read_response(smtp_inblock *, uschar *, int, int, int);
+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_port_for_connect(host_item *, int);
@@ -421,37 +461,42 @@ 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 *, int, const char *, ...) PRINTF_FUNCTION(3,4);
+extern int     smtp_write_command(void *, int, const char *, ...) PRINTF_FUNCTION(3,4);
 #ifdef WITH_CONTENT_SCAN
 extern int     spam(const uschar **);
 extern FILE   *spool_mbox(unsigned long *, const uschar *, uschar **);
 #endif
-extern BOOL    spool_move_message(uschar *, uschar *, uschar *, uschar *);
+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 uschar *spool_sname(const uschar *, uschar *);
+extern BOOL    spool_move_message(uschar *, uschar *, uschar *, uschar *);
 extern int     spool_open_datafile(uschar *);
 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     stdin_getc(unsigned);
 extern int     stdin_feof(void);
 extern int     stdin_ferror(void);
 extern int     stdin_ungetc(int);
-extern uschar *string_append(uschar *, int *, int *, int, ...);
-extern uschar *string_append_listele(uschar *, uschar, const uschar *);
-extern uschar *string_append_listele_n(uschar *, uschar, const uschar *, unsigned);
+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_cat(uschar *, int *, int *, const uschar *);
-extern uschar *string_catn(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_malloc(const uschar *);
 extern uschar *string_copylc(const uschar *);
 extern uschar *string_copynlc(uschar *, int);
 extern uschar *string_dequote(const uschar **);
+extern gstring *string_fmt_append(gstring *, const char *, ...) ALMOST_PRINTF(2,3);
 extern BOOL    string_format(uschar *, int, const char *, ...) ALMOST_PRINTF(3,4);
 extern uschar *string_format_size(int, uschar *);
+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
@@ -461,6 +506,8 @@ extern uschar *string_nextinlist(const uschar **, int *, uschar *, int);
 extern uschar *string_open_failed(int, const char *, ...) PRINTF_FUNCTION(2,3);
 extern const uschar *string_printing2(const uschar *, BOOL);
 extern uschar *string_split_message(uschar *);
+extern uschar *string_timediff(struct timeval *);
+extern uschar *string_timesince(struct timeval *);
 extern uschar *string_unprinting(uschar *);
 #ifdef SUPPORT_I18N
 extern uschar *string_address_utf8_to_alabel(const uschar *, uschar **);
@@ -469,14 +516,18 @@ 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 gstring *string_vformat(gstring *, BOOL, 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 void    tls_modify_variables(tls_support *);
 extern BOOL    transport_check_waiting(const uschar *, const uschar *, int, uschar *,
                  BOOL *, oicf, void*);
 extern void    transport_init(void);
@@ -493,6 +544,7 @@ extern void    transport_write_reset(int);
 extern BOOL    transport_write_string(int, const char *, ...);
 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 *);
@@ -518,7 +570,7 @@ 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_given_host(uschar **, host_item *);
+extern int     verify_check_given_host(const uschar **, const 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 *);
@@ -530,6 +582,7 @@ 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);
 
+
 /* vi: aw
 */
 /* End of functions.h */