X-Git-Url: https://git.exim.org/exim.git/blobdiff_plain/7eb0e5d2b8453f753bd2d8e2e77cf4b7e0b24b1b..75c121f07a85b4029458f11b113a4655114af126:/src/src/structs.h

diff --git a/src/src/structs.h b/src/src/structs.h
index a17b50332..48f475a89 100644
--- a/src/src/structs.h
+++ b/src/src/structs.h
@@ -2,7 +2,7 @@
 *     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. */
 
 
@@ -25,6 +25,13 @@ struct smtp_outblock;
 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 {
@@ -58,6 +65,10 @@ typedef enum {	CHUNKING_NOT_OFFERED = -1,
 		CHUNKING_ACTIVE,
 		CHUNKING_LAST} chunking_state_t;
 
+typedef enum {	TFO_NOT_USED = 0,
+		TFO_ATTEMPTED,
+		TFO_USED } 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. */
@@ -238,7 +249,7 @@ typedef int (*tpt_chunk_cmd_cb)(struct transport_context *, unsigned, unsigned);
 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;
@@ -249,10 +260,6 @@ typedef struct transport_context {
   /* 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;
 
 
@@ -417,8 +424,7 @@ typedef struct auth_info {
     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 */
@@ -610,12 +616,15 @@ typedef struct address_item {
     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_pipelining:1;		/* delivery used (traditional) pipelining */
 #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
@@ -734,11 +743,12 @@ typedef struct {
   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
@@ -775,15 +785,21 @@ md5;
 typedef struct sha1 {
   unsigned int H[5];
   unsigned int length;
-  }
-sha1;
+} sha1;
+
+/* 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 */
@@ -795,7 +811,7 @@ specific socket. The packets which may contain multiple lines when pipelining
 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 */
@@ -866,12 +882,19 @@ typedef BOOL (*oicf) (uschar *message_id, void *data);
 /* 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 */