Initial commit of log.c

Fixed character buffer overflow when copying the media names from the structure.

1 files changed, 78 insertions, 0 deletions

diff --git a/log.c b/log.c
new file mode 100644
index 0000000..20b4a81
--- /dev/null
+++ b/log.c
@@ -0,0 +1,78 @@
+/**
+ *  NetNuke - Erases all storage media detected by the system
+ *  Copyright (C) 2009  Joseph Hunkeler <jhunkeler@gmail.com, jhunk@stsci.edu>
+ *
+ *  This file is part of NetNuke.
+ *
+ *  NetNuke 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 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  NetNuke 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 NetNuke.  If not, see <http://www.gnu.org/licenses/>.
+ **/
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <stdarg.h>
+#include <time.h>
+#include <ctype.h>
+
+
+FILE* loutfile;
+static clock_t ltime_start;
+static clock_t ltime_current;
+static int logline;
+
+int logopen(const char* logfile)
+{
+    logline = 0;
+    ltime_start = clock() * CLK_TCK;
+    loutfile = fopen(logfile, "wa+");
+
+    if(loutfile == NULL)
+    {
+        printf("Cannot not write to log file: %s\n", logfile);
+        return 1;
+    }
+
+    fseek(loutfile, 0, SEEK_SET);
+    return 0;
+}
+
+void logclose()
+{
+    fclose(loutfile);
+}
+
+int lwrite(char *format, ...)
+{
+    ltime_current = clock() * CLK_TCK;
+
+    char *str = (char*)malloc(sizeof(char) * 256);
+    char tmpstr[256];
+    int n;
+
+    va_list args;
+    va_start (args, format);
+    n = vsprintf (str, format, args);
+    va_end (args);
+
+    float seconds = (ltime_current - ltime_start) / 1000;
+
+    snprintf(tmpstr, 255, "[%d.%0.0f]  %s", logline, seconds, str);
+    fprintf(loutfile, tmpstr);
+    logline++;
+
+    /* I am aware of the implications of using fflush constantly. */
+    fflush(loutfile);
+    free(str);
+    return 0;
+}