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--- sendmail/srvrsmtp.c.orig 2021-08-03 10:35:09 UTC
+++ sendmail/srvrsmtp.c
@@ -940,6 +940,9 @@ smtp(nullserver, d_flags, e)
#if _FFR_BADRCPT_SHUTDOWN
int n_badrcpts_adj;
#endif
+#ifdef USE_BLACKLIST
+ int saved_bl_fd;
+#endif
RESET_AUTH_FAIL_LOG_USER;
SevenBitInput_Saved = SevenBitInput;
@@ -1442,6 +1445,7 @@ smtp(nullserver, d_flags, e)
(int) tp.tv_sec +
(tp.tv_usec >= 500000 ? 1 : 0)
);
+ BLACKLIST_NOTIFY(BLACKLIST_AUTH_FAIL, fd, "pre-greeting traffic");
}
}
}
@@ -1544,6 +1548,10 @@ smtp(nullserver, d_flags, e)
SmtpPhase = "server cmd read";
sm_setproctitle(true, e, "server %s cmd read", CurSmtpClient);
+#ifdef USE_BLACKLIST
+ saved_bl_fd = dup(sm_io_getinfo(InChannel, SM_IO_WHAT_FD, NULL));
+#endif
+
/* handle errors */
if (sm_io_error(OutChannel) ||
(p = sfgets(inp, sizeof(inp), InChannel,
@@ -1860,8 +1868,11 @@ smtp(nullserver, d_flags, e)
#define LOGAUTHFAIL \
do \
{ \
+ int fd; \
SET_AUTH_USER_CONDITIONALLY \
message("535 5.7.0 authentication failed"); \
+ fd = sm_io_getinfo(InChannel, SM_IO_WHAT_FD, NULL); \
+ BLACKLIST_NOTIFY(BLACKLIST_AUTH_FAIL, fd, "AUTH FAIL"); \
if (LogLevel >= 9) \
sm_syslog(LOG_WARNING, e->e_id, \
"AUTH failure (%s): %s (%d) %s%s%.*s, relay=%.100s", \
@@ -2011,6 +2022,9 @@ smtp(nullserver, d_flags, e)
DELAY_CONN("AUTH");
if (!sasl_ok || n_mechs <= 0)
{
+ int fd;
+ fd = sm_io_getinfo(InChannel, SM_IO_WHAT_FD, NULL);
+ BLACKLIST_NOTIFY(BLACKLIST_AUTH_FAIL, fd, "AUTH LOGIN FAIL");
message("503 5.3.3 AUTH not available");
break;
}
@@ -3704,10 +3718,17 @@ doquit:
** timeouts for the same connection.
*/
+#ifdef USE_BLACKLIST
+ /* no immediate BLACKLIST_ABUSIVE_BEHAVIOR */
+ BLACKLIST_NOTIFY(BLACKLIST_AUTH_FAIL, saved_bl_fd, "no command issued");
+#endif
sm_syslog(LOG_INFO, e->e_id,
"%s did not issue MAIL/EXPN/VRFY/ETRN during connection to %s",
CurSmtpClient, d);
}
+#ifdef USE_BLACKLIST
+ close(saved_bl_fd);
+#endif
if (tTd(93, 100))
{
/* return to handle next connection */
@@ -3789,7 +3810,10 @@ doquit:
#if MAXBADCOMMANDS > 0
if (++n_badcmds > MAXBADCOMMANDS)
{
+ int fd;
stopattack:
+ fd = sm_io_getinfo(InChannel, SM_IO_WHAT_FD, NULL);
+ BLACKLIST_NOTIFY(BLACKLIST_ABUSIVE_BEHAVIOR, fd, "too many bad commands");
message("421 4.7.0 %s Too many bad commands; closing connection",
MyHostName);
@@ -3843,6 +3867,9 @@ doquit:
}
#if SASL
}
+#endif
+#ifdef USE_BLACKLIST
+ close(saved_bl_fd);
#endif
}
SM_EXCEPT(exc, "[!F]*")
|
