Partial implementation of higher level control functions

[matches/MCTX3420.git] / server / log.c

diff --git a/server/log.c b/server/log.c
index bd41936..d964e61 100644 (file)
--- a/server/log.c
+++ b/server/log.c
@@ -1,23 +1,27 @@
 /**
  * @file log.c
- * @purpose Implement logging and error handling functions
+ * @brief Implement logging and error handling functions
  */
 
 
 #include <unistd.h>
+#include <stdarg.h>
 
 // --- Custom headers --- //
+#include "common.h"
 #include "log.h"
 #include "options.h"
 
 // --- Static variables --- //
-static char * unspecified_funct = (char*)"???";
+static const char * unspecified_funct = "???";
 
 // --- Function implementations --- //
 
+//TODO: Migrate to syslog (shouldn't be too hard; these functions basically do what syslog does)
+//             Note that we will want to have a seperate log as well as syslog; give the user the option to view the log using the GUI
+
 /**
- * @funct Log
- * @purpose Print a message to stderr
+ * Print a message to stderr
  * @param level - Specify how severe the message is.
        If level is higher (less urgent) than the program's verbosity (see options.h) no message will be printed
  * @param funct - String indicating the function name from which this function was called.
@@ -25,36 +29,41 @@ static char * unspecified_funct = (char*)"???";
  * @param fmt - A format string
  * @param ... - Arguments to be printed according to the format string
  */
-void Log(int level, char * funct, char * fmt, ...)
+void LogEx(int level, const char * funct, ...)
 {
+       const char *fmt;
+       va_list va;
+       va_start(va, funct);
+       fmt = va_arg(va, const char*);
+       
        if (fmt == NULL) // sanity check
-               Fatal("Log", "Format string is NULL");
+               FatalEx("Log", "Format string is NULL");
 
        // Don't print the message unless we need to
-       if (level > g_options.verbosity) 
+       if (level > g_options.verbosity)
                return;
 
        if (funct == NULL)
                funct = unspecified_funct;
 
        // Make a human readable severity string
-       char severity[BUFSIZ];
+       const char *severity;
        switch (level)
        {
                case LOGERR:
-                       sprintf(severity, "ERROR");
+                       severity = "ERROR";
                        break;
                case LOGWARN:
-                       sprintf(severity, "WARNING");
+                       severity = "WARNING";
                        break;
                case LOGNOTE:
-                       sprintf(severity, "NOTICE");
+                       severity = "NOTICE";
                        break;
                case LOGINFO:
-                       sprintf(severity, "INFO");
+                       severity = "INFO";
                        break;
                default:
-                       sprintf(severity, "DEBUG");
+                       severity = "DEBUG";
                        break;
        }
 
@@ -62,8 +71,6 @@ void Log(int level, char * funct, char * fmt, ...)
        fprintf(stderr, "%s [%d] : %s : %s - ", g_options.program, getpid(), severity, funct);
 
        // Then pass additional arguments with the format string to vfprintf for printing
-       va_list va;
-       va_start(va, fmt);
        vfprintf(stderr, fmt, va);
        va_end(va);
 
@@ -72,21 +79,24 @@ void Log(int level, char * funct, char * fmt, ...)
 }
 
 /**
- * @funct Fatal
- * @purpose Handle a Fatal error in the program by printing a message and exiting the program
-       CALLING THIS FUNCTION WILL CAUSE THE PROGAM TO EXIT
+ * Handle a Fatal error in the program by printing a message and exiting the program
+ *     CALLING THIS FUNCTION WILL CAUSE THE PROGAM TO EXIT
  * @param funct - Name of the calling function
  * @param fmt - A format string
  * @param ... - Arguments to be printed according to the format string
  */
-void Fatal(char * funct, char * fmt, ...)
+void FatalEx(const char * funct, ...)
 {
+       const char *fmt;
+       va_list va;
+       va_start(va, funct);
+       fmt = va_arg(va, const char*);
        
        if (fmt == NULL)
        {
                // Fatal error in the Fatal function.
                // (This really shouldn't happen unless someone does something insanely stupid)
-               Fatal("Fatal", "Format string is NULL");
+               FatalEx("Fatal", "Format string is NULL");
                return; // Should never get here
        }
 
@@ -95,8 +105,6 @@ void Fatal(char * funct, char * fmt, ...)
 
        fprintf(stderr, "%s [%d] : %s : FATAL - ", g_options.program, getpid(), funct);
 
-       va_list va;
-       va_start(va, fmt);
        vfprintf(stderr, fmt, va);
        va_end(va);
        fprintf(stderr, "\n");