X-Git-Url: http://git.eversberg.eu/gitweb.cgi?p=lcr.git;a=blobdiff_plain;f=macro.h;fp=macro.h;h=9bb1f2961f67d80f43ddb97a974e4124e08381a2;hp=0000000000000000000000000000000000000000;hb=a54078ccf090907f1ebd9ddc3a02cd613ffecf9c;hpb=ef3fc1931a2fa82f482d21fb1296735206463d3a

diff --git a/macro.h b/macro.h
new file mode 100644
index 0000000..9bb1f29
--- /dev/null
+++ b/macro.h
@@ -0,0 +1,107 @@
+/*****************************************************************************\
+**                                                                           **
+** LCR                                                                       **
+**                                                                           **
+**---------------------------------------------------------------------------**
+** Copyright: Andreas Eversberg                                              **
+**                                                                           **
+** Macros to do safe string operations to avoid buffer overflows             **
+** Macros for memory allocation, feeing and error handling                   **
+**                                                                           **
+\*****************************************************************************/ 
+
+
+/* save strcpy/strncpy */
+
+#define SCPY(dst, src) scpy(dst, src, sizeof(dst))
+extern __inline__ void scpy(char *dst, char *src, unsigned int siz)
+{
+	strncpy(dst, src, siz);
+	dst[siz-1] = '\0';
+}
+
+/* save strcat/strncat */
+
+#define SCAT(dst, src) scat(dst, src, sizeof(dst))
+extern __inline__ void scat(char *dst, char *src, unsigned int siz)
+{
+	strncat(dst, src, siz);
+	dst[siz-1] = '\0';
+}
+
+/* save concat of a byte */
+
+#define SCCAT(dst, src) sccat(dst, src, sizeof(dst))
+extern __inline__ void sccat(char *dst, char chr, unsigned int siz)
+{
+	if (strlen(dst) < siz-1)
+	{
+		dst[strlen(dst)+1] = '\0';
+		dst[strlen(dst)] = chr;
+	}
+}
+
+/* save sprintf/snprintf */
+
+#define SPRINT(dst, fmt, arg...) sprint(dst, sizeof(dst), fmt, ## arg)
+extern __inline__ void sprint(char *dst, unsigned int siz, char *fmt, ...)
+{
+	va_list args;
+
+	va_start(args, fmt);
+	vsnprintf(dst, siz, fmt, args);
+	dst[siz-1] = '\0';
+	va_end(args);
+}
+
+/* unsave */
+#define UCPY strcpy
+#define UNCPY strncpy
+#define UCAT strcat
+#define UNCAT strncat
+#define UPRINT sprintf
+#define UNPRINT snprintf
+#define VUNPRINT vsnprintf
+
+/* fatal error with error message and exit */
+#define FATAL(fmt, arg...) fatal(__FUNCTION__, __LINE__, fmt, ##arg)
+extern __inline__ void fatal(const char *function, int line, char *fmt, ...)
+{
+	va_list args;
+	char buffer[256];
+
+	va_start(args, fmt);
+	vsnprintf(buffer, sizeof(buffer), fmt, args);
+	va_end(args);
+	buffer[sizeof(buffer)-1] = '\0';
+	fprintf(stderr, "FATAL ERROR in function %s, line %d: %s", function, line, buffer);
+	fprintf(stderr, "This error is not recoverable, must exit here.\n");
+#ifdef DEBUG_FUNC
+	debug(function, line, "FATAL ERROR", buffer);
+	debug(function, line, "FATAL ERROR", "This error is not recoverable, must exit here.\n");
+#endif
+	exit(EXIT_FAILURE);
+}
+
+/* memory allocation with setting to zero */
+#define MALLOC(size) _malloc(size, __FUNCTION__, __LINE__)
+extern __inline__ void *_malloc(unsigned long size, const char *function, int line)
+{
+	void *addr;
+	addr = malloc(size);
+	if (!addr)
+		fatal(function, line, "No memory for %d bytes.\n", size);
+	memset(addr, 0, size);
+	return(addr);
+}
+
+/* memory freeing with clearing memory to prevent using freed memory */
+#define FREE(addr, size) _free(addr, size)
+extern __inline void _free(void *addr, int size)
+{
+	if (size)
+		memset(addr, 0, size);
+	free(addr);
+}
+
+