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[PATCH 4/8][v2] audisp-racf plugin - logging interface



This patch implements a simple logging interface for the racf plugin.
There's also some debugging code that's completely disabled if 'DEBUG'
symbol isn't defined.
Messages are logged to the syslog (DAEMON facility) with info, warn and
err priorities.

Signed-off-by: Klaus Heinrich Kiwi <klausk br ibm com>

diff -purN audit-1.6.2/audisp/plugins/racf/racf-log.c audit-1.6.2_racf/audisp/plugins/racf/racf-log.c
--- audit-1.6.2/audisp/plugins/racf/racf-log.c	1969-12-31 21:00:00.000000000 -0300
+++ audit-1.6.2_racf/audisp/plugins/racf/racf-log.c	2007-10-10 10:26:18.000000000 -0300
@@ -0,0 +1,109 @@
+/***************************************************************************
+ *   Copyright (C) 2007 International Business Machines  Corp.             *
+ *   All Rights Reserved.                                                  *
+ *                                                                         *
+ *   This program is free software; you can redistribute it and/or modify  *
+ *   it under the terms of the GNU General Public License as published by  *
+ *   the Free Software Foundation; either version 2 of the License, or     *
+ *   (at your option) any later version.                                   *
+ *                                                                         *
+ *   This program is distributed in the hope that it will be useful,       *
+ *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
+ *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
+ *   GNU General Public License for more details.                          *
+ *                                                                         *
+ *   You should have received a copy of the GNU General Public License     *
+ *   along with this program; if not, write to the                         *
+ *   Free Software Foundation, Inc.,                                       *
+ *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
+ *                                                                         *
+ * Authors:                                                                *
+ *   Klaus Heinrich Kiwi <klausk br ibm com>                               *
+ ***************************************************************************/
+#include "racf-log.h"
+
+#include <stdarg.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include "auparse.h"
+
+
+static void vlog_prio(int prio, const char *fmt, va_list ap)
+{
+        char *str;
+
+        if (asprintf(&str, "pid=%d: %s", mypid, fmt) != -1) {
+                vsyslog(LOG_DAEMON | prio, str, ap);
+                free(str);
+        }
+}
+
+void log_err(const char *fmt, ...)
+{
+        va_list ap;
+
+        va_start(ap, fmt);
+        vlog_prio(LOG_ERR, fmt, ap);
+        va_end(ap);
+}
+
+void log_warn(const char *fmt, ...)
+{
+        va_list ap;
+
+        va_start(ap, fmt);
+        vlog_prio(LOG_WARNING, fmt, ap);
+        va_end(ap);
+}
+
+void log_info(const char *fmt, ...)
+{
+        va_list ap;
+
+        va_start(ap, fmt);
+        vlog_prio(LOG_INFO, fmt, ap);
+        va_end(ap);
+}
+
+void _log_debug(const char *fmt, ...)
+{
+        va_list ap;
+
+        va_start(ap, fmt);
+        vlog_prio(LOG_INFO, fmt, ap);
+        va_end(ap);
+}
+
+void _debug_ber(BerElement * ber)
+{
+        struct berval bv;
+
+        if (ber_flatten2(ber, &bv, 0) != -1) {
+                debug_bv(&bv);
+        }
+}
+
+void _debug_bv(struct berval *bv)
+{
+        char *out;
+        char octet[4];
+        ber_len_t i;
+
+        log_debug("---BER value HEX dump (size %u bytes)",
+                  (unsigned int) bv->bv_len);
+                  
+        if (bv->bv_len > 0) {
+                out = (char *) calloc((3 * (bv->bv_len)) + 1, sizeof(char));
+                if (!out) return;
+
+                for (i = 1; i <= bv->bv_len; i++) {
+                        snprintf(octet, 4, "%02x ",
+                                 (unsigned char) bv->bv_val[i - 1]);
+                        strcat(out, octet);
+                }
+                log_debug(out);
+                free(out);
+        }
+}
+
+
diff -purN audit-1.6.2/audisp/plugins/racf/racf-log.h audit-1.6.2_racf/audisp/plugins/racf/racf-log.h
--- audit-1.6.2/audisp/plugins/racf/racf-log.h	1969-12-31 21:00:00.000000000 -0300
+++ audit-1.6.2_racf/audisp/plugins/racf/racf-log.h	2007-10-10 10:26:18.000000000 -0300
@@ -0,0 +1,58 @@
+/***************************************************************************
+ *   Copyright (C) 2007 International Business Machines  Corp.             *
+ *   All Rights Reserved.                                                  *
+ *                                                                         *
+ *   This program is free software; you can redistribute it and/or modify  *
+ *   it under the terms of the GNU General Public License as published by  *
+ *   the Free Software Foundation; either version 2 of the License, or     *
+ *   (at your option) any later version.                                   *
+ *                                                                         *
+ *   This program is distributed in the hope that it will be useful,       *
+ *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
+ *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
+ *   GNU General Public License for more details.                          *
+ *                                                                         *
+ *   You should have received a copy of the GNU General Public License     *
+ *   along with this program; if not, write to the                         *
+ *   Free Software Foundation, Inc.,                                       *
+ *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
+ *                                                                         *
+ * Authors:                                                                *
+ *   Klaus Heinrich Kiwi <klausk br ibm com>                               *
+ ***************************************************************************/
+
+#ifndef _RACF_LOG_H
+#define _RACF_LOG_H
+
+#include "racf-ldap.h"
+
+#include <syslog.h>
+#include <sys/types.h>
+#include <unistd.h>
+#include <lber.h>
+
+extern pid_t mypid;
+
+void log_err(const char *, ...);
+void log_warn(const char *, ...);
+void log_info(const char *, ...);
+void _log_debug(const char *, ...);
+void _debug_bv(struct berval *);
+void _debug_ber(BerElement *);
+
+#ifdef DEBUG
+
+#define log_debug(fmt, ...)        _log_debug(fmt, ## __VA_ARGS__)
+#define debug_bv(bv)               _debug_bv(bv)
+#define debug_ber(ber)             _debug_ber(ber)
+
+#else
+
+#define log_debug(fmt, ...)
+#define debug_bv(bv)
+#define debug_ber(ber)
+
+#endif                 /* DEBUG */
+
+
+#endif                          /* _RACF_LOG_H */



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