#ifdef SUPPORT_TLS
static BOOL tls_advertised;
#endif
+static BOOL dsn_advertised;
static BOOL esmtp;
static BOOL helo_required = FALSE;
static BOOL helo_verify = FALSE;
/* Sanity check and validate optional args to MAIL FROM: envelope */
enum {
ENV_MAIL_OPT_SIZE, ENV_MAIL_OPT_BODY, ENV_MAIL_OPT_AUTH,
-#ifdef EXPERIMENTAL_PRDR
+#ifndef DISABLE_PRDR
ENV_MAIL_OPT_PRDR,
#endif
+ ENV_MAIL_OPT_RET, ENV_MAIL_OPT_ENVID,
ENV_MAIL_OPT_NULL
};
typedef struct {
{ US"SIZE", ENV_MAIL_OPT_SIZE, TRUE },
{ US"BODY", ENV_MAIL_OPT_BODY, TRUE },
{ US"AUTH", ENV_MAIL_OPT_AUTH, TRUE },
-#ifdef EXPERIMENTAL_PRDR
+#ifndef DISABLE_PRDR
{ US"PRDR", ENV_MAIL_OPT_PRDR, FALSE },
#endif
+ { US"RET", ENV_MAIL_OPT_RET, TRUE },
+ { US"ENVID", ENV_MAIL_OPT_ENVID, TRUE },
{ US"NULL", ENV_MAIL_OPT_NULL, FALSE }
};
} v1;
struct {
uschar sig[12];
- uschar ver;
- uschar cmd;
- uschar fam;
- uschar len;
+ uint8_t ver_cmd;
+ uint8_t fam;
+ uint16_t len;
union {
struct { /* TCP/UDP over IPv4, len = 12 */
uint32_t src_addr;
int get_ok = 0;
int size, ret, fd;
-const char v2sig[13] = "\x0D\x0A\x0D\x0A\x00\x0D\x0A\x51\x55\x49\x54\x0A\x02";
+const char v2sig[12] = "\x0D\x0A\x0D\x0A\x00\x0D\x0A\x51\x55\x49\x54\x0A";
uschar *iptype; /* To display debug info */
struct timeval tv;
socklen_t vslen = 0;
}
if (ret >= 16 &&
- memcmp(&hdr.v2, v2sig, 13) == 0)
+ memcmp(&hdr.v2, v2sig, 12) == 0)
{
+ uint8_t ver, cmd;
+
+ /* May 2014: haproxy combined the version and command into one byte to
+ allow two full bytes for the length field in order to proxy SSL
+ connections. SSL Proxy is not supported in this version of Exim, but
+ must still seperate values here. */
+ ver = (hdr.v2.ver_cmd & 0xf0) >> 4;
+ cmd = (hdr.v2.ver_cmd & 0x0f);
+
+ if (ver != 0x02)
+ {
+ DEBUG(D_receive) debug_printf("Invalid Proxy Protocol version: %d\n", ver);
+ goto proxyfail;
+ }
DEBUG(D_receive) debug_printf("Detected PROXYv2 header\n");
+ /* The v2 header will always be 16 bytes per the spec. */
size = 16 + hdr.v2.len;
if (ret < size)
{
- DEBUG(D_receive) debug_printf("Truncated or too large PROXYv2 header\n");
+ DEBUG(D_receive) debug_printf("Truncated or too large PROXYv2 header (%d/%d)\n",
+ ret, size);
goto proxyfail;
}
- switch (hdr.v2.cmd)
+ switch (cmd)
{
case 0x01: /* PROXY command */
switch (hdr.v2.fam)
break;
default:
DEBUG(D_receive)
- debug_printf("Unsupported PROXYv2 command: 0x%02x\n",
- hdr.v2.cmd);
+ debug_printf("Unsupported PROXYv2 command: 0x%x\n", cmd);
goto proxyfail;
}
}
if (s != NULL) s[ptr] = 0; else s = US"";
log_write(0, LOG_MAIN, "no MAIL in SMTP connection from %s D=%s%s",
host_and_ident(FALSE),
- readconf_printtime(time(NULL) - smtp_connection_start), s);
+ readconf_printtime( (int) ((long)time(NULL) - (long)smtp_connection_start)),
+ s);
}
sender_verified_list = NULL; /* No senders verified */
memset(sender_address_cache, 0, sizeof(sender_address_cache));
memset(sender_domain_cache, 0, sizeof(sender_domain_cache));
+
+/* Reset the DSN flags */
+dsn_ret = 0;
+dsn_envid = NULL;
+
authenticated_sender = NULL;
#ifdef EXPERIMENTAL_BRIGHTMAIL
bmi_run = 0;
tls_in.ocsp = OCSP_NOT_REQ;
tls_advertised = FALSE;
#endif
+dsn_advertised = FALSE;
/* Reset ACL connection variables */
set_process_info("handling incoming connection from %s",
host_and_ident(FALSE));
+ /* Expand smtp_receive_timeout, if needed */
+
+ if (smtp_receive_timeout_s)
+ {
+ uschar * exp;
+ if ( !(exp = expand_string(smtp_receive_timeout_s))
+ || !(*exp)
+ || (smtp_receive_timeout = readconf_readtime(exp, 0, FALSE)) < 0
+ )
+ log_write(0, LOG_MAIN|LOG_PANIC,
+ "bad value for smtp_receive_timeout: '%s'", exp ? exp : US"");
+ }
+
/* Start up TLS if tls_on_connect is set. This is for supporting the legacy
smtps port for use with older style SSL MTAs. */
#endif
(where == ACL_WHERE_PREDATA)? US"DATA" :
(where == ACL_WHERE_DATA)? US"after DATA" :
-#ifdef EXPERIMENTAL_PRDR
+#ifndef DISABLE_PRDR
(where == ACL_WHERE_PRDR)? US"after DATA PRDR" :
#endif
(smtp_cmd_data == NULL)?
int ptr, size, rc;
int c, i;
auth_instance *au;
+ uschar *orcpt = NULL;
+ int flags;
switch(smtp_read_command(TRUE))
{
#ifdef SUPPORT_TLS
tls_advertised = FALSE;
#endif
+ dsn_advertised = FALSE;
smtp_code = US"250 "; /* Default response code plus space*/
if (user_msg == NULL)
s = string_cat(s, &size, &ptr, US"-8BITMIME\r\n", 11);
}
+ /* Advertise DSN support if configured to do so. */
+ if (verify_check_host(&dsn_advertise_hosts) != FAIL)
+ {
+ s = string_cat(s, &size, &ptr, smtp_code, 3);
+ s = string_cat(s, &size, &ptr, US"-DSN\r\n", 6);
+ dsn_advertised = TRUE;
+ }
+
/* Advertise ETRN if there's an ACL checking whether a host is
permitted to issue it; a check is made when any host actually tries. */
}
#endif
- #ifdef EXPERIMENTAL_PRDR
+ #ifndef DISABLE_PRDR
/* Per Recipient Data Response, draft by Eric A. Hall extending RFC */
- if (prdr_enable) {
+ if (prdr_enable)
+ {
s = string_cat(s, &size, &ptr, smtp_code, 3);
s = string_cat(s, &size, &ptr, US"-PRDR\r\n", 7);
- }
+ }
#endif
/* Finish off the multiline reply with one that is always available. */
arg_error = TRUE;
break;
+ /* Handle the two DSN options, but only if configured to do so (which
+ will have caused "DSN" to be given in the EHLO response). The code itself
+ is included only if configured in at build time. */
+
+ case ENV_MAIL_OPT_RET:
+ if (dsn_advertised) {
+ /* Check if RET has already been set */
+ if (dsn_ret > 0) {
+ synprot_error(L_smtp_syntax_error, 501, NULL,
+ US"RET can be specified once only");
+ goto COMMAND_LOOP;
+ }
+ dsn_ret = (strcmpic(value, US"HDRS") == 0)? dsn_ret_hdrs :
+ (strcmpic(value, US"FULL") == 0)? dsn_ret_full : 0;
+ DEBUG(D_receive) debug_printf("DSN_RET: %d\n", dsn_ret);
+ /* Check for invalid invalid value, and exit with error */
+ if (dsn_ret == 0) {
+ synprot_error(L_smtp_syntax_error, 501, NULL,
+ US"Value for RET is invalid");
+ goto COMMAND_LOOP;
+ }
+ }
+ break;
+ case ENV_MAIL_OPT_ENVID:
+ if (dsn_advertised) {
+ /* Check if the dsn envid has been already set */
+ if (dsn_envid != NULL) {
+ synprot_error(L_smtp_syntax_error, 501, NULL,
+ US"ENVID can be specified once only");
+ goto COMMAND_LOOP;
+ }
+ dsn_envid = string_copy(value);
+ DEBUG(D_receive) debug_printf("DSN_ENVID: %s\n", dsn_envid);
+ }
+ break;
+
/* Handle the AUTH extension. If the value given is not "<>" and either
the ACL says "yes" or there is no ACL but the sending host is
authenticated, we set it up as the authenticated sender. However, if the
}
break;
-#ifdef EXPERIMENTAL_PRDR
+#ifndef DISABLE_PRDR
case ENV_MAIL_OPT_PRDR:
- if ( prdr_enable )
+ if (prdr_enable)
prdr_requested = TRUE;
break;
#endif
when pipelining is not advertised, do another sync check in case the ACL
delayed and the client started sending in the meantime. */
- if (acl_smtp_mail == NULL) rc = OK; else
+ if (acl_smtp_mail)
{
rc = acl_check(ACL_WHERE_MAIL, NULL, acl_smtp_mail, &user_msg, &log_msg);
if (rc == OK && !pipelining_advertised && !check_sync())
goto SYNC_FAILURE;
}
+ else
+ rc = OK;
if (rc == OK || rc == DISCARD)
{
- if (user_msg == NULL)
+ if (!user_msg)
smtp_printf("%s%s%s", US"250 OK",
- #ifdef EXPERIMENTAL_PRDR
- prdr_requested == TRUE ? US", PRDR Requested" :
- #endif
+ #ifndef DISABLE_PRDR
+ prdr_requested ? US", PRDR Requested" : US"",
+ #else
US"",
+ #endif
US"\r\n");
else
{
- #ifdef EXPERIMENTAL_PRDR
- if ( prdr_requested == TRUE )
+ #ifndef DISABLE_PRDR
+ if (prdr_requested)
user_msg = string_sprintf("%s%s", user_msg, US", PRDR Requested");
#endif
- smtp_user_msg(US"250",user_msg);
+ smtp_user_msg(US"250", user_msg);
}
smtp_delay_rcpt = smtp_rlr_base;
recipients_discarded = (rc == DISCARD);
break;
}
+ /* Set the DSN flags orcpt and dsn_flags from the session*/
+ orcpt = NULL;
+ flags = 0;
+
+ if (esmtp) for(;;)
+ {
+ uschar *name, *value;
+
+ if (!extract_option(&name, &value))
+ break;
+
+ if (dsn_advertised && strcmpic(name, US"ORCPT") == 0)
+ {
+ /* Check whether orcpt has been already set */
+ if (orcpt)
+ {
+ synprot_error(L_smtp_syntax_error, 501, NULL,
+ US"ORCPT can be specified once only");
+ goto COMMAND_LOOP;
+ }
+ orcpt = string_copy(value);
+ DEBUG(D_receive) debug_printf("DSN orcpt: %s\n", orcpt);
+ }
+
+ else if (dsn_advertised && strcmpic(name, US"NOTIFY") == 0)
+ {
+ /* Check if the notify flags have been already set */
+ if (flags > 0)
+ {
+ synprot_error(L_smtp_syntax_error, 501, NULL,
+ US"NOTIFY can be specified once only");
+ goto COMMAND_LOOP;
+ }
+ if (strcmpic(value, US"NEVER") == 0)
+ flags |= rf_notify_never;
+ else
+ {
+ uschar *p = value;
+ while (*p != 0)
+ {
+ uschar *pp = p;
+ while (*pp != 0 && *pp != ',') pp++;
+ if (*pp == ',') *pp++ = 0;
+ if (strcmpic(p, US"SUCCESS") == 0)
+ {
+ DEBUG(D_receive) debug_printf("DSN: Setting notify success\n");
+ flags |= rf_notify_success;
+ }
+ else if (strcmpic(p, US"FAILURE") == 0)
+ {
+ DEBUG(D_receive) debug_printf("DSN: Setting notify failure\n");
+ flags |= rf_notify_failure;
+ }
+ else if (strcmpic(p, US"DELAY") == 0)
+ {
+ DEBUG(D_receive) debug_printf("DSN: Setting notify delay\n");
+ flags |= rf_notify_delay;
+ }
+ else
+ {
+ /* Catch any strange values */
+ synprot_error(L_smtp_syntax_error, 501, NULL,
+ US"Invalid value for NOTIFY parameter");
+ goto COMMAND_LOOP;
+ }
+ p = pp;
+ }
+ DEBUG(D_receive) debug_printf("DSN Flags: %x\n", flags);
+ }
+ }
+
+ /* Unknown option. Stick back the terminator characters and break
+ the loop. An error for a malformed address will occur. */
+
+ else
+ {
+ DEBUG(D_receive) debug_printf("Invalid RCPT option: %s : %s\n", name, value);
+ name[-1] = ' ';
+ value[-1] = '=';
+ break;
+ }
+ }
+
/* Apply SMTP rewriting then extract the working address. Don't allow "<>"
as a recipient address */
if (user_msg == NULL) smtp_printf("250 Accepted\r\n");
else smtp_user_msg(US"250", user_msg);
receive_add_recipient(recipient, -1);
+
+ /* Set the dsn flags in the recipients_list */
+ if (orcpt != NULL)
+ recipients_list[recipients_count-1].orcpt = orcpt;
+ else
+ recipients_list[recipients_count-1].orcpt = NULL;
+
+ if (flags != 0)
+ recipients_list[recipients_count-1].dsn_flags = flags;
+ else
+ recipients_list[recipients_count-1].dsn_flags = 0;
+ DEBUG(D_receive) debug_printf("DSN: orcpt: %s flags: %d\n", recipients_list[recipients_count-1].orcpt, recipients_list[recipients_count-1].dsn_flags);
}
/* The recipient was discarded */
ACL may have delayed. To handle cutthrough delivery enforce a dummy call
to get the DATA command sent. */
- if (acl_smtp_predata == NULL && cutthrough_fd < 0) rc = OK; else
+ if (acl_smtp_predata == NULL && cutthrough.fd < 0) rc = OK; else
{
uschar * acl= acl_smtp_predata ? acl_smtp_predata : US"accept";
enable_dollar_recipients = TRUE;
git://git.exim.org / exim.git / blobdiff