| 1 | /************************************************* |
| 2 | * Exim - an Internet mail transport agent * |
| 3 | *************************************************/ |
| 4 | |
| 5 | /* Copyright (c) University of Cambridge 1995 - 2015 */ |
| 6 | /* See the file NOTICE for conditions of use and distribution. */ |
| 7 | |
| 8 | #define DELIVER_BUFFER_SIZE 4096 |
| 9 | |
| 10 | #define PENDING 256 |
| 11 | #define PENDING_DEFER (PENDING + DEFER) |
| 12 | #define PENDING_OK (PENDING + OK) |
| 13 | |
| 14 | |
| 15 | /* Private structure for the private options and other private data. */ |
| 16 | |
| 17 | typedef struct { |
| 18 | uschar *hosts; |
| 19 | uschar *fallback_hosts; |
| 20 | host_item *hostlist; |
| 21 | host_item *fallback_hostlist; |
| 22 | uschar *authenticated_sender; |
| 23 | uschar *helo_data; |
| 24 | uschar *interface; |
| 25 | uschar *port; |
| 26 | uschar *protocol; |
| 27 | uschar *dscp; |
| 28 | uschar *serialize_hosts; |
| 29 | uschar *hosts_try_auth; |
| 30 | uschar *hosts_require_auth; |
| 31 | uschar *hosts_try_chunking; |
| 32 | #ifdef EXPERIMENTAL_DANE |
| 33 | uschar *hosts_try_dane; |
| 34 | uschar *hosts_require_dane; |
| 35 | #endif |
| 36 | uschar *hosts_try_fastopen; |
| 37 | #ifndef DISABLE_PRDR |
| 38 | uschar *hosts_try_prdr; |
| 39 | #endif |
| 40 | #ifndef DISABLE_OCSP |
| 41 | uschar *hosts_request_ocsp; |
| 42 | uschar *hosts_require_ocsp; |
| 43 | #endif |
| 44 | uschar *hosts_require_tls; |
| 45 | uschar *hosts_avoid_tls; |
| 46 | uschar *hosts_verify_avoid_tls; |
| 47 | uschar *hosts_avoid_pipelining; |
| 48 | uschar *hosts_avoid_esmtp; |
| 49 | uschar *hosts_nopass_tls; |
| 50 | int command_timeout; |
| 51 | int connect_timeout; |
| 52 | int data_timeout; |
| 53 | int final_timeout; |
| 54 | int size_addition; |
| 55 | int hosts_max_try; |
| 56 | int hosts_max_try_hardlimit; |
| 57 | BOOL address_retry_include_sender; |
| 58 | BOOL allow_localhost; |
| 59 | BOOL authenticated_sender_force; |
| 60 | BOOL gethostbyname; |
| 61 | BOOL dns_qualify_single; |
| 62 | BOOL dns_search_parents; |
| 63 | dnssec_domains dnssec; |
| 64 | BOOL delay_after_cutoff; |
| 65 | BOOL hosts_override; |
| 66 | BOOL hosts_randomize; |
| 67 | BOOL keepalive; |
| 68 | BOOL lmtp_ignore_quota; |
| 69 | uschar *expand_retry_include_ip_address; |
| 70 | BOOL retry_include_ip_address; |
| 71 | #ifdef SUPPORT_SOCKS |
| 72 | uschar *socks_proxy; |
| 73 | #endif |
| 74 | #ifdef SUPPORT_TLS |
| 75 | uschar *tls_certificate; |
| 76 | uschar *tls_crl; |
| 77 | uschar *tls_privatekey; |
| 78 | uschar *tls_require_ciphers; |
| 79 | uschar *tls_sni; |
| 80 | uschar *tls_verify_certificates; |
| 81 | int tls_dh_min_bits; |
| 82 | BOOL tls_tempfail_tryclear; |
| 83 | uschar *tls_verify_hosts; |
| 84 | uschar *tls_try_verify_hosts; |
| 85 | uschar *tls_verify_cert_hostnames; |
| 86 | #endif |
| 87 | #ifndef DISABLE_DKIM |
| 88 | struct ob_dkim dkim; |
| 89 | #endif |
| 90 | } smtp_transport_options_block; |
| 91 | |
| 92 | /* smtp connect context */ |
| 93 | typedef struct { |
| 94 | uschar * from_addr; |
| 95 | address_item * addrlist; |
| 96 | host_item * host; |
| 97 | int host_af; |
| 98 | int port; |
| 99 | uschar * interface; |
| 100 | |
| 101 | BOOL lmtp:1; |
| 102 | BOOL smtps:1; |
| 103 | BOOL ok:1; |
| 104 | BOOL send_rset:1; |
| 105 | BOOL send_quit:1; |
| 106 | BOOL setting_up:1; |
| 107 | BOOL esmtp:1; |
| 108 | BOOL esmtp_sent:1; |
| 109 | BOOL pending_MAIL:1; |
| 110 | #ifndef DISABLE_PRDR |
| 111 | BOOL prdr_active:1; |
| 112 | #endif |
| 113 | #ifdef SUPPORT_I18N |
| 114 | BOOL utf8_needed:1; |
| 115 | #endif |
| 116 | BOOL dsn_all_lasthop:1; |
| 117 | #if defined(SUPPORT_TLS) && defined(EXPERIMENTAL_DANE) |
| 118 | BOOL dane:1; |
| 119 | BOOL dane_required:1; |
| 120 | #endif |
| 121 | BOOL completed_addr; /* pointer to this used by BDAT callback */ |
| 122 | |
| 123 | int max_rcpt; |
| 124 | |
| 125 | uschar peer_offered; |
| 126 | uschar * igquotstr; |
| 127 | uschar * helo_data; |
| 128 | #ifdef EXPERIMENTAL_DSN_INFO |
| 129 | uschar * smtp_greeting; |
| 130 | uschar * helo_response; |
| 131 | #endif |
| 132 | |
| 133 | address_item * first_addr; |
| 134 | address_item * next_addr; |
| 135 | address_item * sync_addr; |
| 136 | |
| 137 | smtp_inblock inblock; |
| 138 | smtp_outblock outblock; |
| 139 | uschar buffer[DELIVER_BUFFER_SIZE]; |
| 140 | uschar inbuffer[4096]; |
| 141 | uschar outbuffer[4096]; |
| 142 | |
| 143 | transport_instance * tblock; |
| 144 | smtp_transport_options_block * ob; |
| 145 | } smtp_context; |
| 146 | |
| 147 | extern int smtp_setup_conn(smtp_context *, BOOL, BOOL); |
| 148 | |
| 149 | |
| 150 | /* Data for reading the private options. */ |
| 151 | |
| 152 | extern optionlist smtp_transport_options[]; |
| 153 | extern int smtp_transport_options_count; |
| 154 | |
| 155 | /* Block containing default values. */ |
| 156 | |
| 157 | extern smtp_transport_options_block smtp_transport_option_defaults; |
| 158 | |
| 159 | /* The main, init, and closedown entry points for the transport */ |
| 160 | |
| 161 | extern BOOL smtp_transport_entry(transport_instance *, address_item *); |
| 162 | extern void smtp_transport_init(transport_instance *); |
| 163 | extern void smtp_transport_closedown(transport_instance *); |
| 164 | |
| 165 | |
| 166 | |
| 167 | extern int smtp_auth(uschar *, unsigned, address_item *, host_item *, |
| 168 | smtp_transport_options_block *, BOOL, |
| 169 | smtp_inblock *, smtp_outblock *); |
| 170 | extern BOOL smtp_mail_auth_str(uschar *, unsigned, |
| 171 | address_item *, smtp_transport_options_block *); |
| 172 | |
| 173 | #ifdef SUPPORT_SOCKS |
| 174 | extern int socks_sock_connect(host_item *, int, int, uschar *, |
| 175 | transport_instance *, int); |
| 176 | #endif |
| 177 | |
| 178 | /* End of transports/smtp.h */ |