OpenSolaris Launch

1 files changed, 445 insertions, 0 deletions

diff --git a/usr/src/cmd/ssh/libssh/common/log.c b/usr/src/cmd/ssh/libssh/common/log.c
new file mode 100644
index 0000000000..4042d2ffd9
--- /dev/null
+++ b/usr/src/cmd/ssh/libssh/common/log.c
@@ -0,0 +1,445 @@
+/*
+ * Author: Tatu Ylonen <ylo@cs.hut.fi>
+ * Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
+ *                    All rights reserved
+ *
+ * As far as I am concerned, the code I have written for this software
+ * can be used freely for any purpose.  Any derived versions of this
+ * software must be clearly marked as such, and if the derived work is
+ * incompatible with the protocol description in the RFC file, it must be
+ * called by a name other than "ssh" or "Secure Shell".
+ */
+/*
+ * Copyright (c) 2000 Markus Friedl.  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 ``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 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.
+ */
+/*
+ * Copyright 2004 Sun Microsystems, Inc.  All rights reserved.
+ * Use is subject to license terms.
+ */
+
+#include "includes.h"
+RCSID("$OpenBSD: log.c,v 1.24 2002/07/19 15:43:33 markus Exp $");
+
+#pragma ident	"%Z%%M%	%I%	%E% SMI"
+
+#include "log.h"
+#include "xmalloc.h"
+
+#include <syslog.h>
+
+static LogLevel log_level = SYSLOG_LEVEL_INFO;
+static int log_on_stderr = 1;
+static int log_facility = LOG_AUTH;
+static char *argv0;
+
+extern char *__progname;
+
+static const char *log_txt_prefix = "";
+
+/* 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 },
+#ifdef LOG_AUTHPRIV
+	{ "AUTHPRIV",	SYSLOG_FACILITY_AUTHPRIV },
+#endif
+	{ "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,		SYSLOG_FACILITY_NOT_SET }
+};
+
+static struct {
+	const char *name;
+	LogLevel val;
+} log_levels[] =
+{
+	{ "QUIET",	SYSLOG_LEVEL_QUIET },
+	{ "FATAL",	SYSLOG_LEVEL_FATAL },
+	{ "ERROR",	SYSLOG_LEVEL_ERROR },
+	{ "NOTICE",	SYSLOG_LEVEL_NOTICE },
+	{ "INFO",	SYSLOG_LEVEL_INFO },
+	{ "VERBOSE",	SYSLOG_LEVEL_VERBOSE },
+	{ "DEBUG",	SYSLOG_LEVEL_DEBUG1 },
+	{ "DEBUG1",	SYSLOG_LEVEL_DEBUG1 },
+	{ "DEBUG2",	SYSLOG_LEVEL_DEBUG2 },
+	{ "DEBUG3",	SYSLOG_LEVEL_DEBUG3 },
+	{ NULL,		SYSLOG_LEVEL_NOT_SET }
+};
+
+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 SYSLOG_FACILITY_NOT_SET;
+}
+
+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 SYSLOG_LEVEL_NOT_SET;
+}
+
+void
+set_log_txt_prefix(const char *txt)
+{
+	log_txt_prefix = txt;
+}
+
+/* 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);
+}
+
+void
+notice(const char *fmt,...)
+{
+	va_list args;
+
+	va_start(args, fmt);
+	do_log(SYSLOG_LEVEL_NOTICE, 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_DEBUG1, fmt, args);
+	va_end(args);
+}
+
+void
+debug2(const char *fmt,...)
+{
+	va_list args;
+
+	va_start(args, fmt);
+	do_log(SYSLOG_LEVEL_DEBUG2, fmt, args);
+	va_end(args);
+}
+
+void
+debug3(const char *fmt,...)
+{
+	va_list args;
+
+	va_start(args, fmt);
+	do_log(SYSLOG_LEVEL_DEBUG3, 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;
+		}
+	}
+	debug3("fatal_remove_cleanup: no such cleanup function: 0x%lx 0x%lx",
+	    (u_long) proc, (u_long) context);
+}
+
+/* Remove all cleanups, to be called after fork() */
+void
+fatal_remove_all_cleanups(void)
+{
+	struct fatal_cleanup *cu, *next_cu;
+
+	for (cu = fatal_cleanups; cu; cu = next_cu) {
+		next_cu = cu->next;
+		xfree(cu);
+	}
+
+	fatal_cleanups = NULL;
+}
+
+/* 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)",
+		    (u_long) cu->proc, (u_long) cu->context);
+		(*cu->proc) (cu->context);
+	}
+	exit(255);
+}
+
+
+/*
+ * Initialize the log.
+ */
+
+void
+log_init(char *av0, LogLevel level, SyslogFacility facility, int on_stderr)
+{
+	argv0 = av0;
+
+	switch (level) {
+	case SYSLOG_LEVEL_QUIET:
+	case SYSLOG_LEVEL_FATAL:
+	case SYSLOG_LEVEL_ERROR:
+	case SYSLOG_LEVEL_NOTICE:
+	case SYSLOG_LEVEL_INFO:
+	case SYSLOG_LEVEL_VERBOSE:
+	case SYSLOG_LEVEL_DEBUG1:
+	case SYSLOG_LEVEL_DEBUG2:
+	case SYSLOG_LEVEL_DEBUG3:
+		log_level = level;
+		break;
+	default:
+		fprintf(stderr, "Unrecognized internal syslog level code %d\n",
+		    (int) level);
+		exit(1);
+	}
+
+	log_on_stderr = on_stderr;
+	if (on_stderr)
+		return;
+
+	switch (facility) {
+	case SYSLOG_FACILITY_DAEMON:
+		log_facility = LOG_DAEMON;
+		break;
+	case SYSLOG_FACILITY_USER:
+		log_facility = LOG_USER;
+		break;
+	case SYSLOG_FACILITY_AUTH:
+		log_facility = LOG_AUTH;
+		break;
+#ifdef LOG_AUTHPRIV
+	case SYSLOG_FACILITY_AUTHPRIV:
+		log_facility = LOG_AUTHPRIV;
+		break;
+#endif
+	case SYSLOG_FACILITY_LOCAL0:
+		log_facility = LOG_LOCAL0;
+		break;
+	case SYSLOG_FACILITY_LOCAL1:
+		log_facility = LOG_LOCAL1;
+		break;
+	case SYSLOG_FACILITY_LOCAL2:
+		log_facility = LOG_LOCAL2;
+		break;
+	case SYSLOG_FACILITY_LOCAL3:
+		log_facility = LOG_LOCAL3;
+		break;
+	case SYSLOG_FACILITY_LOCAL4:
+		log_facility = LOG_LOCAL4;
+		break;
+	case SYSLOG_FACILITY_LOCAL5:
+		log_facility = LOG_LOCAL5;
+		break;
+	case SYSLOG_FACILITY_LOCAL6:
+		log_facility = LOG_LOCAL6;
+		break;
+	case SYSLOG_FACILITY_LOCAL7:
+		log_facility = LOG_LOCAL7;
+		break;
+	default:
+		fprintf(stderr,
+		    "Unrecognized internal syslog facility code %d\n",
+		    (int) facility);
+		exit(1);
+	}
+}
+
+#define MSGBUFSIZ 1024
+
+/* PRINTFLIKE2 */
+void
+do_log(LogLevel level, const char *fmt, va_list args)
+{
+	char msgbuf[MSGBUFSIZ];
+	char fmtbuf[MSGBUFSIZ];
+	char *txt = NULL;
+	int pri = LOG_INFO;
+	int do_gettext = log_on_stderr; /*
+					 * Localize user messages - not
+					 * syslog()ed messages.
+					 */
+
+	if (level > log_level)
+		return;
+
+	switch (level) {
+	case SYSLOG_LEVEL_FATAL:
+		if (!log_on_stderr)
+			txt = "fatal";
+		pri = LOG_CRIT;
+		break;
+	case SYSLOG_LEVEL_ERROR:
+		if (!log_on_stderr)
+			txt = "error";
+		pri = LOG_ERR;
+		break;
+	case SYSLOG_LEVEL_NOTICE:
+		pri = LOG_NOTICE;
+		break;
+	case SYSLOG_LEVEL_INFO:
+		pri = LOG_INFO;
+		break;
+	case SYSLOG_LEVEL_VERBOSE:
+		pri = LOG_INFO;
+		break;
+	case SYSLOG_LEVEL_DEBUG1:
+		txt = "debug1";
+		pri = LOG_DEBUG;
+		/*
+		 * Don't localize debug messages - such are not intended
+		 * for users but for support staff whose preferred
+		 * language is unknown, therefore we default to the
+		 * language used in the source code: English.
+		 */
+		do_gettext = 0;
+		break;
+	case SYSLOG_LEVEL_DEBUG2:
+		txt = "debug2";
+		pri = LOG_DEBUG;
+		do_gettext = 0;	    /* Don't localize debug messages. */
+		break;
+	case SYSLOG_LEVEL_DEBUG3:
+		txt = "debug3";
+		pri = LOG_DEBUG;
+		do_gettext = 0;	    /* Don't localize debug messages. */
+		break;
+	default:
+		txt = "internal error";
+		pri = LOG_ERR;
+		break;
+	}
+	if (txt != NULL) {
+		snprintf(fmtbuf, sizeof(fmtbuf), "%s%s: %s", log_txt_prefix,
+			 do_gettext ? gettext(txt) : txt,
+			 do_gettext ? gettext(fmt) : fmt);
+		vsnprintf(msgbuf, sizeof(msgbuf), fmtbuf, args);
+	} else {
+		vsnprintf(msgbuf, sizeof(msgbuf),
+			  do_gettext ? gettext(fmt) : fmt,
+			  args);
+	}
+	if (log_on_stderr) {
+		fprintf(stderr, "%s\r\n", msgbuf);
+	} else {
+		openlog(argv0 ? argv0 : __progname, LOG_PID, log_facility);
+		syslog(pri, "%.500s", msgbuf);
+		closelog();
+	}
+}