* Exim - an Internet mail transport agent *
*************************************************/
-/* Copyright (c) University of Cambridge 1995 - 2015 */
+/* Copyright (c) University of Cambridge 1995 - 2018 */
+/* Copyright (c) The Exim Maintainers 2020 */
/* 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;
BOOL retry_use_local_part; /* Just what it says */
BOOL same_domain_copy_routing; /* TRUE => copy routing for same domain */
BOOL self_rewrite; /* TRUE to rewrite headers if making local */
+ uschar *set; /* Variable = value to set; list */
BOOL suffix_optional; /* As it says */
BOOL verify_only; /* Skip this router if not verifying */
BOOL verify_recipient; /* Use this router when verifying a recipient*/
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 */
void (*version_report)( /* diagnostic version reporting */
FILE *); /* I/O stream to print to */
+ void (*macros_create)(void); /* feature-macro creation */
} auth_info;
int port;
BOOL v6_include_v4; /* Used in the daemon */
uschar address[46];
+ uschar * log; /* portion of "listening on" log line */
} ip_address_item;
/* Structure for chaining together arbitrary strings. */
uschar *errors_address; /* where to send errors (NULL => sender) */
header_line *extra_headers; /* additional headers */
uschar *remove_headers; /* list of those to remove */
+ void *variables; /* router-vasriables */
- #ifdef EXPERIMENTAL_SRS
+#ifdef EXPERIMENTAL_SRS_ALT
uschar *srs_sender; /* Change return path when delivering */
- #endif
+#endif
BOOL ignore_error:1; /* ignore delivery error */
- #ifdef SUPPORT_I18N
+#ifdef SUPPORT_I18N
BOOL utf8_msg:1; /* requires SMTPUTF8 processing */
BOOL utf8_downcvt:1; /* mandatory downconvert on delivery */
BOOL utf8_downcvt_maybe:1; /* optional downconvert on delivery */
- #endif
+#endif
} address_item_propagated;
uschar *lc_local_part; /* lowercased local part */
uschar *local_part; /* points to cc or lc version */
uschar *prefix; /* stripped prefix of local part */
+ uschar *prefix_v; /* variable part of above */
uschar *suffix; /* stripped suffix of local part */
+ uschar *suffix_v; /* variable part of above */
const uschar *domain; /* working domain (lower cased) */
uschar *address_retry_key; /* retry key including full address */
uschar *self_hostname; /* after self=pass */
uschar *shadow_message; /* info about shadow transporting */
-#ifdef SUPPORT_TLS
+#ifndef DISABLE_TLS
+ const uschar *tlsver; /* version used for transport */
uschar *cipher; /* Cipher used for transport */
void *ourcert; /* Certificate offered to peer, binary */
void *peercert; /* Certificate from peer, binary */
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_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 */
+#ifndef DISABLE_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
BOOL af_utf8_downcvt:1; /* downconvert was done for delivery */
+#endif
+#ifdef EXPERIMENTAL_TLS_RESUME
+ BOOL af_tls_resume:1; /* TLS used a resumed session */
#endif
} flags;
unsigned int domain_cache[(MAX_NAMED_LIST * 2)/32];
unsigned int localpart_cache[(MAX_NAMED_LIST * 2)/32];
int mode; /* mode for local transporting to a file */
+ int basic_errno; /* status after failure */
int more_errno; /* additional error information */
- /* (may need to hold a timestamp) */
- unsigned int delivery_usec; /* subsecond part of delivery time */
+ struct timeval delivery_time; /* time taken to do delivery/attempt */
- short int basic_errno; /* status after failure */
unsigned short child_count; /* number of child addresses */
short int return_file; /* fileno of return data file */
short int special_action; /* ( used when when deferred or failed */
/* Structure for holding time-limited data such as DNS returns.
We use this rather than extending tree_node to avoid wasting
space for most tree use (variables...) at the cost of complexity
-for the lookups cache */
+for the lookups cache.
+We also store any options used for the lookup. */
typedef struct expiring_data {
- time_t expiry; /* if nonzero, data invalid after this time */
- void *ptr; /* pointer to data */
+ time_t expiry; /* if nonzero, data invalid after this time */
+ const uschar * opts; /* options, or NULL */
+ union
+ {
+ void * ptr; /* pointer to data */
+ int val; /* or integer data */
+ } data;
} expiring_data;
/* Structure for holding the handle and the cached last lookup for searches.
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;
+
+#ifdef SUPPORT_DANE
+ BOOL dane:1; /* connection must do dane */
+ dns_answer tlsa_dnsa; /* strictly, this should use tainted mem */
+#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 */
/* Structure for holding data for an entry in a named list */
typedef struct namedlist_block {
- const uschar *string; /* the list string */
- namedlist_cacheblock *cache_data; /* cached domain_data or localpart_data */
- int number; /* the number of the list for caching */
+ const uschar *string; /* the list string */
+ namedlist_cacheblock *cache_data; /* cached domain_data or localpart_data */
+ short number; /* the number of the list for caching */
+ BOOL hide; /* -bP does not display value */
} namedlist_block;
/* 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 */
/* DKIM information for transport */
struct ob_dkim {
uschar *dkim_domain;
+ uschar *dkim_identity;
uschar *dkim_private_key;
uschar *dkim_selector;
uschar *dkim_canon;
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 */
git://git.exim.org / exim.git / blobdiff