1 files changed, 136 insertions, 0 deletions
diff --git a/lib/libpam/libpam/pam_debug_log.c b/lib/libpam/libpam/pam_debug_log.c
new file mode 100644
index 0000000..14e9b79
--- /dev/null
+++ b/lib/libpam/libpam/pam_debug_log.c
@@ -0,0 +1,136 @@
+/*-
+ * Copyright 2001 Mark R V Murray
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+#include <libgen.h>
+#include <stdarg.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <syslog.h>
+
+#include <security/pam_appl.h>
+#include <security/openpam.h>
+#include <security/pam_mod_misc.h>
+
+#define	FMTBUFSIZ	256
+
+static char *modulename(const char *);
+
+/* Log a debug message, including the function name and a
+ * cleaned up filename.
+ */
+void
+_pam_log(struct options *options, const char *file, const char *function,
+    const char *format, ...)
+{
+	va_list ap;
+	char *fmtbuf, *modname;
+
+	if (pam_test_option(options, PAM_OPT_DEBUG, NULL)) {
+		modname = modulename(file);
+		va_start(ap, format);
+		asprintf(&fmtbuf, "%s: %s: %s", modname, function, format);
+		vsyslog(LOG_DEBUG, fmtbuf, ap);
+		free(fmtbuf);
+		va_end(ap);
+	}
+}
+
+/* Log a return value, including the function name and a
+ * cleaned up filename.
+ */
+void
+_pam_log_retval(struct options *options, const char *file, const char *function,
+    int retval)
+{
+	char *modname;
+
+	if (pam_test_option(options, PAM_OPT_DEBUG, NULL)) {
+		modname = modulename(file);
+
+		switch (retval) {
+		case PAM_SUCCESS:
+			syslog(LOG_DEBUG, "%s: %s: returning PAM_SUCCESS",
+			    modname, function);
+			break;
+		case PAM_AUTH_ERR:
+			syslog(LOG_DEBUG, "%s: %s: returning PAM_AUTH_ERR",
+			    modname, function);
+			break;
+		case PAM_IGNORE:
+			syslog(LOG_DEBUG, "%s: %s: returning PAM_IGNORE",
+			    modname, function);
+			break;
+		case PAM_PERM_DENIED:
+			syslog(LOG_DEBUG, "%s: %s: returning PAM_PERM_DENIED",
+			    modname, function);
+			break;
+		default:
+			syslog(LOG_DEBUG, "%s: %s: returning (%d)",
+			    modname, function, retval);
+		}
+
+		free(modname);
+	}
+}
+
+/* Print a verbose error, including the function name and a
+ * cleaned up filename.
+ */
+void
+_pam_verbose_error(pam_handle_t *pamh, struct options *options,
+    const char *file, const char *function, const char *format, ...)
+{
+	va_list ap;
+	char *statusmsg, *fmtbuf, *modname;
+
+	if (!pam_test_option(options, PAM_OPT_NO_WARN, NULL)) {
+		modname = modulename(file);
+		va_start(ap, format);
+		asprintf(&fmtbuf, "%s: %s: %s", modname, function, format);
+		vasprintf(&statusmsg, fmtbuf, ap);
+		pam_error(pamh, "%s", statusmsg);
+		free(statusmsg);
+		free(fmtbuf);
+		va_end(ap);
+	}
+}
+
+static char *
+modulename(const char *file)
+{
+	char *modname, *period;
+
+	modname = strdup(basename(file));
+	period = strchr(modname, '.');
+	if (period != NULL)
+		*period = '\0';
+
+	return modname;
+}