Vendor import of OpenSSH.

1 files changed, 184 insertions, 0 deletions

diff --git a/crypto/openssh/log.c b/crypto/openssh/log.c
new file mode 100644
index 0000000..03038b2
--- /dev/null
+++ b/crypto/openssh/log.c
@@ -0,0 +1,184 @@
+/*
+ * Shared versions of debug(), log(), etc.
+ */
+
+#include "includes.h"
+RCSID("$OpenBSD: log.c,v 1.7 2000/01/04 00:07:59 markus Exp $");
+
+#include "ssh.h"
+#include "xmalloc.h"
+
+/* Fatal messages.  This function never returns. */
+
+void
+fatal(const char *fmt,...)
+{
+	va_list args;
+	va_start(args, fmt);
+	do_log(SYSLOG_LEVEL_FATAL, fmt, args);
+	va_end(args);
+	fatal_cleanup();
+}
+
+/* Error messages that should be logged. */
+
+void
+error(const char *fmt,...)
+{
+	va_list args;
+	va_start(args, fmt);
+	do_log(SYSLOG_LEVEL_ERROR, fmt, args);
+	va_end(args);
+}
+
+/* Log this message (information that usually should go to the log). */
+
+void
+log(const char *fmt,...)
+{
+	va_list args;
+	va_start(args, fmt);
+	do_log(SYSLOG_LEVEL_INFO, fmt, args);
+	va_end(args);
+}
+
+/* More detailed messages (information that does not need to go to the log). */
+
+void
+verbose(const char *fmt,...)
+{
+	va_list args;
+	va_start(args, fmt);
+	do_log(SYSLOG_LEVEL_VERBOSE, fmt, args);
+	va_end(args);
+}
+
+/* Debugging messages that should not be logged during normal operation. */
+
+void
+debug(const char *fmt,...)
+{
+	va_list args;
+	va_start(args, fmt);
+	do_log(SYSLOG_LEVEL_DEBUG, fmt, args);
+	va_end(args);
+}
+
+/* Fatal cleanup */
+
+struct fatal_cleanup {
+	struct fatal_cleanup *next;
+	void (*proc) (void *);
+	void *context;
+};
+
+static struct fatal_cleanup *fatal_cleanups = NULL;
+
+/* Registers a cleanup function to be called by fatal() before exiting. */
+
+void
+fatal_add_cleanup(void (*proc) (void *), void *context)
+{
+	struct fatal_cleanup *cu;
+
+	cu = xmalloc(sizeof(*cu));
+	cu->proc = proc;
+	cu->context = context;
+	cu->next = fatal_cleanups;
+	fatal_cleanups = cu;
+}
+
+/* Removes a cleanup frunction to be called at fatal(). */
+
+void
+fatal_remove_cleanup(void (*proc) (void *context), void *context)
+{
+	struct fatal_cleanup **cup, *cu;
+
+	for (cup = &fatal_cleanups; *cup; cup = &cu->next) {
+		cu = *cup;
+		if (cu->proc == proc && cu->context == context) {
+			*cup = cu->next;
+			xfree(cu);
+			return;
+		}
+	}
+	fatal("fatal_remove_cleanup: no such cleanup function: 0x%lx 0x%lx\n",
+	      (unsigned long) proc, (unsigned long) context);
+}
+
+/* Cleanup and exit */
+void
+fatal_cleanup(void)
+{
+	struct fatal_cleanup *cu, *next_cu;
+	static int called = 0;
+
+	if (called)
+		exit(255);
+	called = 1;
+	/* Call cleanup functions. */
+	for (cu = fatal_cleanups; cu; cu = next_cu) {
+		next_cu = cu->next;
+		debug("Calling cleanup 0x%lx(0x%lx)",
+		      (unsigned long) cu->proc, (unsigned long) cu->context);
+		(*cu->proc) (cu->context);
+	}
+	exit(255);
+}
+
+/* textual representation of log-facilities/levels */
+
+static struct {
+	const char *name;
+	SyslogFacility val;
+} log_facilities[] = {
+	{ "DAEMON",	SYSLOG_FACILITY_DAEMON },
+	{ "USER",	SYSLOG_FACILITY_USER },
+	{ "AUTH",	SYSLOG_FACILITY_AUTH },
+	{ "LOCAL0",	SYSLOG_FACILITY_LOCAL0 },
+	{ "LOCAL1",	SYSLOG_FACILITY_LOCAL1 },
+	{ "LOCAL2",	SYSLOG_FACILITY_LOCAL2 },
+	{ "LOCAL3",	SYSLOG_FACILITY_LOCAL3 },
+	{ "LOCAL4",	SYSLOG_FACILITY_LOCAL4 },
+	{ "LOCAL5",	SYSLOG_FACILITY_LOCAL5 },
+	{ "LOCAL6",	SYSLOG_FACILITY_LOCAL6 },
+	{ "LOCAL7",	SYSLOG_FACILITY_LOCAL7 },
+	{ NULL, 0 }
+};
+
+static struct {
+	const char *name;
+	LogLevel val;
+} log_levels[] =
+{
+	{ "QUIET",	SYSLOG_LEVEL_QUIET },
+	{ "FATAL",	SYSLOG_LEVEL_FATAL },
+	{ "ERROR",	SYSLOG_LEVEL_ERROR },
+	{ "INFO",	SYSLOG_LEVEL_INFO },
+	{ "VERBOSE",	SYSLOG_LEVEL_VERBOSE },
+	{ "DEBUG",	SYSLOG_LEVEL_DEBUG },
+	{ NULL, 0 }
+};
+
+SyslogFacility
+log_facility_number(char *name)
+{
+	int i;
+	if (name != NULL)
+		for (i = 0; log_facilities[i].name; i++)
+			if (strcasecmp(log_facilities[i].name, name) == 0)
+				return log_facilities[i].val;
+	return (SyslogFacility) - 1;
+}
+
+LogLevel
+log_level_number(char *name)
+{
+	int i;
+	if (name != NULL)
+		for (i = 0; log_levels[i].name; i++)
+			if (strcasecmp(log_levels[i].name, name) == 0)
+				return log_levels[i].val;
+	return (LogLevel) - 1;
+}