Added logging subsystem

1 files changed, 121 insertions, 0 deletions

diff --git a/common/log.h b/common/log.h
new file mode 100644
index 00000000..ccea0e58
--- /dev/null
+++ b/common/log.h
@@ -0,0 +1,121 @@
+/*
+   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., 675 Mass Ave, Cambridge, MA 02139, USA.
+
+   xrdp: A Remote Desktop Protocol server.
+   Copyright (C) Jay Sorg 2005
+
+   session manager
+   linux only
+
+   log.h: logging code declarations
+
+*/
+
+#ifndef LOG_H
+#define LOG_H
+
+#include "arch.h"
+
+/* logging buffer size */
+#define LOG_BUFFER_SIZE      8192
+
+/* logging levels */
+#define LOG_LEVEL_ALWAYS        0 
+#define LOG_LEVEL_ERROR         1
+#define LOG_LEVEL_WARNING       2
+#define LOG_LEVEL_INFO          3
+#define LOG_LEVEL_DEBUG         4
+
+/* startup return values */
+#define LOG_STARTUP_OK          0
+#define LOG_ERROR_MALLOC        1
+#define LOG_ERROR_NULL_FILE     2
+#define LOG_ERROR_FILE_OPEN     3
+#define LOG_ERROR_NO_CFG        4
+#define LOG_ERROR_FILE_NOT_OPEN 5
+
+#ifdef DEBUG
+  #define LOG_DBG(s,args...) log_message(LOG_LEVEL_DEBUG,s,args);
+#else
+  #define LOG_DBG  
+#endif
+
+struct log_config 
+{
+  char* program_name;
+  char* log_file;
+  int fd;
+  unsigned int log_level;
+  int enable_syslog;
+  unsigned int syslog_level;
+};
+
+/**
+ *
+ * Logs a message. Optionally logs the same message on syslog
+ *
+ * @param lvl The level of the logged message
+ *
+ * @param msg The message to be logged
+ *
+ * @return 
+ * 
+ */
+int DEFAULT_CC
+log_message(const unsigned int lvl, const char* msg, ...);
+
+/**
+ * 
+ * Starts the logging subsystem
+ *
+ * @param progname string to prepend to syslog messages
+ *
+ * @param logfile log file path
+ *
+ * @param loglvl level of messages to log
+ *
+ * @param syslog if set to 0, disables the use of syslog
+ *
+ * @param syslvl level of messages to log to syslog
+ * 
+ * @return
+ * 
+ */
+int DEFAULT_CC
+log_start(const char* progname, const char* logfile, const unsigned int loglvl, 
+          const int syslog, const unsigned int syslvl);
+
+/**
+ *
+ * Shuts down the logging subsystem
+ * 
+ */
+void DEFAULT_CC
+log_end();
+
+/**
+ *
+ * Converts a string to a log level
+ *
+ * @s The string to convert
+ *
+ * @return The corresponding level od LOG_LEVEL_DEBUG if error
+ *
+ */
+int DEFAULT_CC
+log_text2level(char* s);
+
+#endif
+