171 lines
5.5 KiB
Diff
171 lines
5.5 KiB
Diff
diff -up openssh-4.7p1/auth.c.audit openssh-4.7p1/auth.c
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--- openssh-4.7p1/auth.c.audit 2007-03-26 18:35:28.000000000 +0200
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+++ openssh-4.7p1/auth.c 2007-09-06 17:07:44.000000000 +0200
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@@ -286,6 +286,12 @@ auth_log(Authctxt *authctxt, int authent
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get_canonical_hostname(options.use_dns), "ssh", &loginmsg);
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# endif
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#endif
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+#if HAVE_LINUX_AUDIT
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+ if (authenticated == 0 && !authctxt->postponed) {
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+ linux_audit_record_event(-1, authctxt->user, NULL,
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+ get_remote_ipaddr(), "sshd", 0);
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+ }
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+#endif
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#ifdef SSH_AUDIT_EVENTS
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if (authenticated == 0 && !authctxt->postponed)
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audit_event(audit_classify_auth(method));
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@@ -492,6 +498,10 @@ getpwnamallow(const char *user)
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record_failed_login(user,
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get_canonical_hostname(options.use_dns), "ssh");
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#endif
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+#ifdef HAVE_LINUX_AUDIT
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+ linux_audit_record_event(-1, user, NULL, get_remote_ipaddr(),
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+ "sshd", 0);
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+#endif
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#ifdef SSH_AUDIT_EVENTS
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audit_event(SSH_INVALID_USER);
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#endif /* SSH_AUDIT_EVENTS */
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diff -up openssh-4.7p1/loginrec.c.audit openssh-4.7p1/loginrec.c
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--- openssh-4.7p1/loginrec.c.audit 2007-04-29 04:10:58.000000000 +0200
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+++ openssh-4.7p1/loginrec.c 2007-09-06 17:07:44.000000000 +0200
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@@ -176,6 +176,10 @@
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#include "auth.h"
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#include "buffer.h"
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+#ifdef HAVE_LINUX_AUDIT
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+# include <libaudit.h>
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+#endif
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+
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#ifdef HAVE_UTIL_H
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# include <util.h>
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#endif
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@@ -202,6 +206,9 @@ int utmp_write_entry(struct logininfo *l
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int utmpx_write_entry(struct logininfo *li);
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int wtmp_write_entry(struct logininfo *li);
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int wtmpx_write_entry(struct logininfo *li);
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+#ifdef HAVE_LINUX_AUDIT
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+int linux_audit_write_entry(struct logininfo *li);
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+#endif
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int lastlog_write_entry(struct logininfo *li);
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int syslogin_write_entry(struct logininfo *li);
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@@ -440,6 +447,10 @@ login_write(struct logininfo *li)
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/* set the timestamp */
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login_set_current_time(li);
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+#ifdef HAVE_LINUX_AUDIT
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+ if (linux_audit_write_entry(li) == 0)
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+ fatal("linux_audit_write_entry failed: %s", strerror(errno));
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+#endif
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#ifdef USE_LOGIN
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syslogin_write_entry(li);
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#endif
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@@ -1394,6 +1405,51 @@ wtmpx_get_entry(struct logininfo *li)
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}
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#endif /* USE_WTMPX */
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+#ifdef HAVE_LINUX_AUDIT
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+int
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+linux_audit_record_event(int uid, const char *username,
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+ const char *hostname, const char *ip, const char *ttyn, int success)
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+{
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+ char buf[64];
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+ int audit_fd, rc;
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+
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+ audit_fd = audit_open();
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+ if (audit_fd < 0) {
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+ if (errno == EINVAL || errno == EPROTONOSUPPORT ||
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+ errno == EAFNOSUPPORT)
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+ return 1; /* No audit support in kernel */
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+ else
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+ return 0; /* Must prevent login */
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+ }
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+ if (username == NULL)
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+ snprintf(buf, sizeof(buf), "uid=%d", uid);
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+ else
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+ snprintf(buf, sizeof(buf), "acct=%s", username);
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+ rc = audit_log_user_message(audit_fd, AUDIT_USER_LOGIN,
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+ buf, hostname, ip, ttyn, success);
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+ close(audit_fd);
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+ if (rc >= 0)
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+ return 1;
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+ else
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+ return 0;
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+}
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+
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+int
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+linux_audit_write_entry(struct logininfo *li)
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+{
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+ switch(li->type) {
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+ case LTYPE_LOGIN:
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+ return (linux_audit_record_event(li->uid, NULL, li->hostname,
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+ NULL, li->line, 1));
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+ case LTYPE_LOGOUT:
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+ return (1); /* We only care about logins */
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+ default:
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+ logit("%s: invalid type field", __func__);
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+ return (0);
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+ }
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+}
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+#endif /* HAVE_LINUX_AUDIT */
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+
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/**
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** Low-level libutil login() functions
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**/
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diff -up openssh-4.7p1/config.h.in.audit openssh-4.7p1/config.h.in
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--- openssh-4.7p1/config.h.in.audit 2007-09-04 08:50:04.000000000 +0200
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+++ openssh-4.7p1/config.h.in 2007-09-06 17:07:44.000000000 +0200
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@@ -1334,6 +1334,9 @@
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/* Define if you want SELinux support. */
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#undef WITH_SELINUX
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+/* Define if you want Linux audit support. */
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+#undef HAVE_LINUX_AUDIT
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+
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/* Define to 1 if your processor stores words with the most significant byte
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first (like Motorola and SPARC, unlike Intel and VAX). */
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#undef WORDS_BIGENDIAN
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diff -up openssh-4.7p1/loginrec.h.audit openssh-4.7p1/loginrec.h
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--- openssh-4.7p1/loginrec.h.audit 2006-08-05 04:39:40.000000000 +0200
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+++ openssh-4.7p1/loginrec.h 2007-09-06 17:07:44.000000000 +0200
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@@ -127,5 +127,9 @@ char *line_stripname(char *dst, const ch
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char *line_abbrevname(char *dst, const char *src, int dstsize);
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void record_failed_login(const char *, const char *, const char *);
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+#ifdef HAVE_LINUX_AUDIT
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+int linux_audit_record_event(int uid, const char *username,
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+ const char *hostname, const char *ip, const char *ttyn, int success);
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+#endif /* HAVE_LINUX_AUDIT */
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#endif /* _HAVE_LOGINREC_H_ */
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diff -up openssh-4.7p1/configure.ac.audit openssh-4.7p1/configure.ac
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--- openssh-4.7p1/configure.ac.audit 2007-09-06 17:07:44.000000000 +0200
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+++ openssh-4.7p1/configure.ac 2007-09-06 17:15:23.000000000 +0200
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@@ -3216,6 +3216,18 @@ AC_ARG_WITH(selinux,
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fi ]
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)
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+# Check whether user wants Linux audit support
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+LINUX_AUDIT_MSG="no"
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+AC_ARG_WITH(linux-audit,
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+ [ --with-linux-audit Enable Linux audit support],
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+ [ if test "x$withval" != "xno" ; then
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+ AC_DEFINE(HAVE_LINUX_AUDIT,1,[Define if you want Linux audit support.])
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+ LINUX_AUDIT_MSG="yes"
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+ AC_CHECK_HEADERS(libaudit.h)
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+ SSHDLIBS="$SSHDLIBS -laudit"
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+ fi ]
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+)
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+
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# Check whether user wants Kerberos 5 support
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KRB5_MSG="no"
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AC_ARG_WITH(kerberos5,
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@@ -4037,6 +4049,7 @@ echo " PAM support
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echo " OSF SIA support: $SIA_MSG"
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echo " KerberosV support: $KRB5_MSG"
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echo " SELinux support: $SELINUX_MSG"
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+echo " Linux audit support: $LINUX_AUDIT_MSG"
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echo " Smartcard support: $SCARD_MSG"
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echo " S/KEY support: $SKEY_MSG"
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echo " TCP Wrappers support: $TCPW_MSG"
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