Adding upstream version 4.94.2.upstream/4.94.2upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 209 insertions, 0 deletions

diff --git a/src/transports/smtp.h b/src/transports/smtp.h
new file mode 100644
index 0000000..213bca1
--- /dev/null
+++ b/src/transports/smtp.h
@@ -0,0 +1,209 @@
+/*************************************************
+*     Exim - an Internet mail transport agent    *
+*************************************************/
+
+/* Copyright (c) University of Cambridge 1995 - 2018 */
+/* Copyright (c) The Exim Maintainers 2020 */
+/* See the file NOTICE for conditions of use and distribution. */
+
+#define DELIVER_BUFFER_SIZE 4096
+
+#define PENDING          256
+#define PENDING_DEFER   (PENDING + DEFER)
+#define PENDING_OK      (PENDING + OK)
+
+
+/* Private structure for the private options and other private data. */
+
+typedef struct {
+  uschar *hosts;
+  uschar *fallback_hosts;
+  host_item *hostlist;
+  host_item *fallback_hostlist;
+  uschar *authenticated_sender;
+  uschar *helo_data;
+  uschar *interface;
+  uschar *port;
+  uschar *protocol;
+  uschar *dscp;
+  uschar *serialize_hosts;
+  uschar *hosts_try_auth;
+  uschar *hosts_require_auth;
+  uschar *hosts_try_chunking;
+#ifdef SUPPORT_DANE
+  uschar *hosts_try_dane;
+  uschar *hosts_require_dane;
+  uschar *dane_require_tls_ciphers;
+#endif
+  uschar *hosts_try_fastopen;
+#ifndef DISABLE_PRDR
+  uschar *hosts_try_prdr;
+#endif
+#ifndef DISABLE_OCSP
+  uschar *hosts_request_ocsp;
+  uschar *hosts_require_ocsp;
+#endif
+  uschar *hosts_require_tls;
+  uschar *hosts_avoid_tls;
+  uschar *hosts_verify_avoid_tls;
+  uschar *hosts_avoid_pipelining;
+#ifndef DISABLE_PIPE_CONNECT
+  uschar *hosts_pipe_connect;
+#endif
+  uschar *hosts_avoid_esmtp;
+#ifndef DISABLE_TLS
+  uschar *hosts_nopass_tls;
+  uschar *hosts_noproxy_tls;
+#endif
+  int     command_timeout;
+  int     connect_timeout;
+  int     data_timeout;
+  int     final_timeout;
+  int     size_addition;
+  int     hosts_max_try;
+  int     hosts_max_try_hardlimit;
+  BOOL    address_retry_include_sender;
+  BOOL    allow_localhost;
+  BOOL    authenticated_sender_force;
+  BOOL    gethostbyname;
+  BOOL    dns_qualify_single;
+  BOOL    dns_search_parents;
+  dnssec_domains dnssec;
+  BOOL    delay_after_cutoff;
+  BOOL    hosts_override;
+  BOOL    hosts_randomize;
+  BOOL    keepalive;
+  BOOL    lmtp_ignore_quota;
+  uschar *expand_retry_include_ip_address;
+  BOOL    retry_include_ip_address;
+#ifdef SUPPORT_SOCKS
+  uschar *socks_proxy;
+#endif
+#ifndef DISABLE_TLS
+  uschar *tls_certificate;
+  uschar *tls_crl;
+  uschar *tls_privatekey;
+  uschar *tls_require_ciphers;
+# ifdef EXPERIMENTAL_TLS_RESUME
+  uschar *tls_resumption_hosts;
+# endif
+  const uschar *tls_sni;
+  uschar *tls_verify_certificates;
+  int     tls_dh_min_bits;
+  BOOL    tls_tempfail_tryclear;
+  uschar *tls_verify_hosts;
+  uschar *tls_try_verify_hosts;
+  uschar *tls_verify_cert_hostnames;
+#endif
+#ifdef SUPPORT_I18N
+  uschar *utf8_downconvert;
+#endif
+#ifndef DISABLE_DKIM
+  struct ob_dkim dkim;
+#endif
+#ifdef EXPERIMENTAL_ARC
+  uschar *arc_sign;
+#endif
+} smtp_transport_options_block;
+
+#define SOB (smtp_transport_options_block *)
+
+
+/* smtp connect context */
+typedef struct {
+  uschar *		from_addr;
+  address_item *	addrlist;
+
+  smtp_connect_args	conn_args;
+  int			port;
+
+  BOOL verify:1;
+  BOOL lmtp:1;
+  BOOL smtps:1;
+  BOOL ok:1;
+  BOOL setting_up:1;
+#ifndef DISABLE_PIPE_CONNECT
+  BOOL early_pipe_ok:1;
+  BOOL early_pipe_active:1;
+#endif
+  BOOL esmtp:1;
+  BOOL esmtp_sent:1;
+  BOOL pipelining_used:1;
+#ifndef DISABLE_PRDR
+  BOOL prdr_active:1;
+#endif
+#ifdef SUPPORT_I18N
+  BOOL utf8_needed:1;
+#endif
+  BOOL dsn_all_lasthop:1;
+#if !defined(DISABLE_TLS) && defined(SUPPORT_DANE)
+  BOOL dane_required:1;
+#endif
+#ifndef DISABLE_PIPE_CONNECT
+  BOOL pending_BANNER:1;
+  BOOL pending_EHLO:1;
+#endif
+  BOOL pending_MAIL:1;
+  BOOL pending_BDAT:1;
+  BOOL RCPT_452:1;
+  BOOL good_RCPT:1;
+  BOOL completed_addr:1;
+  BOOL send_rset:1;
+  BOOL send_quit:1;
+
+  int		max_rcpt;
+  int		cmd_count;
+
+  unsigned	peer_offered;
+  unsigned	avoid_option;
+  uschar *	igquotstr;
+  uschar *	helo_data;
+#ifdef EXPERIMENTAL_DSN_INFO
+  uschar *	smtp_greeting;
+  uschar *	helo_response;
+#endif
+#ifndef DISABLE_PIPE_CONNECT
+  ehlo_resp_precis	ehlo_resp;
+#endif
+
+  struct timeval	delivery_start;
+  address_item *	first_addr;
+  address_item *	next_addr;
+  address_item *	sync_addr;
+
+  client_conn_ctx	cctx;
+  smtp_inblock		inblock;
+  smtp_outblock		outblock;
+  uschar	buffer[DELIVER_BUFFER_SIZE];
+  uschar	inbuffer[4096];
+  uschar	outbuffer[4096];
+} smtp_context;
+
+extern int smtp_setup_conn(smtp_context *, BOOL);
+extern int smtp_write_mail_and_rcpt_cmds(smtp_context *, int *);
+extern int smtp_reap_early_pipe(smtp_context *, int *);
+
+
+/* Data for reading the private options. */
+
+extern optionlist smtp_transport_options[];
+extern int smtp_transport_options_count;
+
+/* Block containing default values. */
+
+extern smtp_transport_options_block smtp_transport_option_defaults;
+
+/* The main, init, and closedown entry points for the transport */
+
+extern BOOL smtp_transport_entry(transport_instance *, address_item *);
+extern void smtp_transport_init(transport_instance *);
+extern void smtp_transport_closedown(transport_instance *);
+
+
+
+#ifdef SUPPORT_SOCKS
+extern int     socks_sock_connect(host_item *, int, int, uschar *,
+	         transport_instance *, int);
+#endif
+
+/* End of transports/smtp.h */