* Exim - an Internet mail transport agent *
*************************************************/
-/* Copyright (c) University of Cambridge 1995 - 2015 */
+/* Copyright (c) University of Cambridge 1995 - 2018 */
/* See the file NOTICE for conditions of use and distribution. */
struct transport_info;
struct router_info;
+/* Growable-string */
+typedef struct gstring {
+ int size; /* Current capacity of string memory */
+ int ptr; /* Offset at which to append further chars */
+ uschar * s; /* The string memory */
+} gstring;
+
/* Structure for remembering macros for the configuration file */
typedef struct macro_item {
CHUNKING_ACTIVE,
CHUNKING_LAST} chunking_state_t;
+typedef enum { TFO_NOT_USED = 0,
+ TFO_ATTEMPTED_NODATA,
+ TFO_ATTEMPTED_DATA,
+ TFO_USED_NODATA,
+ TFO_USED_DATA } tfo_state_t;
+
/* Structure for holding information about a host for use mainly by routers,
but also used when checking lists of hosts and when transporting. Looking up
host addresses is done using this structure. */
typedef struct transport_context {
union { /* discriminated by option topt_output_string */
int fd; /* file descriptor to write message to */
- uschar * msg; /* allocated string with written message */
+ gstring * msg; /* allocated string with written message */
} u;
transport_instance * tblock; /* transport */
struct address_item * addr;
/* items below only used with option topt_use_bdat */
tpt_chunk_cmd_cb chunk_cb; /* per-datachunk callback */
void * smtp_context;
-
- /* items below only used with option topt_output_string */
- int msg_size;
- int msg_ptr;
} transport_ctx;
uschar *); /* rest of AUTH command */
int (*clientcode)( /* client function */
struct auth_instance *,
- struct smtp_inblock *, /* socket and input buffer */
- struct smtp_outblock *, /* socket and output buffer */
+ void *, /* smtp conn, with socket, output and input buffers */
int, /* command timeout */
uschar *, /* buffer for reading response */
int); /* sizeof buffer */
BOOL af_cert_verified:1; /* delivered with verified TLS cert */
BOOL af_pass_message:1; /* pass message in bounces */
BOOL af_bad_reply:1; /* filter could not generate autoreply */
- BOOL af_tcp_fastopen:1; /* delivery used TCP Fast Open */
+ BOOL af_tcp_fastopen_conn:1; /* delivery connection used TCP Fast Open */
+ BOOL af_tcp_fastopen:1; /* delivery usefully used TCP Fast Open */
+ BOOL af_tcp_fastopen_data:1; /* delivery sent SMTP commands on TCP Fast Open */
+ BOOL af_pipelining:1; /* delivery used (traditional) pipelining */
+#ifdef EXPERIMENTAL_PIPE_CONNECT
+ BOOL af_early_pipe:1; /* delivery used connect-time pipelining */
+#endif
#ifndef DISABLE_PRDR
BOOL af_prdr_used:1; /* delivery used SMTP PRDR */
#endif
BOOL af_chunking_used:1; /* delivery used SMTP CHUNKING */
BOOL af_force_command:1; /* force_command in pipe transport */
-#ifdef EXPERIMENTAL_DANE
+#ifdef SUPPORT_DANE
BOOL af_dane_verified:1; /* TLS cert verify done with DANE */
#endif
#ifdef SUPPORT_I18N
const uschar *data; /* pointer to data */
} dns_record;
-/* Structure for holding the result of a DNS query. */
+/* Structure for holding the result of a DNS query. A touch over
+64k big, so take care to release as soon as possible. */
typedef struct {
int answerlen; /* length of the answer */
- uschar answer[MAXPACKET]; /* the answer itself */
+ uschar answer[NS_MAXMSG]; /* the answer itself */
} dns_answer;
/* Structure for holding the intermediate data while scanning a DNS answer
typedef struct sha1 {
unsigned int H[5];
unsigned int length;
- }
-sha1;
+} sha1;
+
+/* Information for making an smtp connection */
+typedef struct {
+ transport_instance * tblock;
+ void * ob; /* smtp_transport_options_block * */
+ host_item * host;
+ int host_af;
+ uschar * interface;
+
+#if defined(SUPPORT_TLS) && defined(SUPPORT_DANE)
+ BOOL dane:1; /* connection must do dane */
+ dns_answer tlsa_dnsa;
+#endif
+} smtp_connect_args;
+
+/* A client-initiated connection. If TLS, the second element is non-NULL */
+typedef struct {
+ int sock;
+ void * tls_ctx;
+} client_conn_ctx;
+
/* Structure used to hold incoming packets of SMTP responses for a specific
socket. The packets which may contain multiple lines (and in some cases,
multiple responses). */
typedef struct smtp_inblock {
- int sock; /* the socket */
+ client_conn_ctx * cctx; /* the connection */
int buffersize; /* the size of the buffer */
uschar *ptr; /* current position in the buffer */
uschar *ptrend; /* end of data in the buffer */
is in use. */
typedef struct smtp_outblock {
- int sock; /* the socket */
+ client_conn_ctx * cctx; /* the connection */
int cmd_count; /* count of buffered commands */
int buffersize; /* the size of the buffer */
BOOL authenticating; /* TRUE when authenticating */
uschar *ptr; /* current position in the buffer */
uschar *buffer; /* the buffer itself */
+
+ smtp_connect_args * conn_args; /* to make connection, if not yet made */
} smtp_outblock;
/* Structure to hold information about the source of redirection information */
/* Structures for Access Control Lists */
typedef struct acl_condition_block {
- struct acl_condition_block *next;
- uschar *arg;
- int type;
+ struct acl_condition_block * next;
+ uschar * arg;
+ int type;
union {
- BOOL negated;
- uschar *varname;
+ BOOL negated;
+ uschar * varname;
} u;
} acl_condition_block;
typedef struct acl_block {
- struct acl_block *next;
- acl_condition_block *condition;
- int verb;
+ struct acl_block * next;
+ acl_condition_block * condition;
+ int verb;
+ int srcline;
+ const uschar * srcfile;
} acl_block;
/* smtp transport calc outbound_ip */
uschar *dkim_sign_headers;
uschar *dkim_strict;
uschar *dkim_hash;
+ uschar *dkim_timestamps;
BOOL dot_stuffed;
+ BOOL force_bodyhash;
+#ifdef EXPERIMENTAL_ARC
+ uschar *arc_signspec;
+#endif
};
/* End of structs.h */
projects / exim.git / blobdiff