only for backup, still in coding state - no compile!!!

[lcr.git] / save.h

diff --git a/save.h b/save.h
new file mode 100644 (file)
index 0000000..9b2d8a9
--- /dev/null
+++ b/save.h
@@ -0,0 +1,64 @@
+/*****************************************************************************\
+**                                                                           **
+** PBX4Linux                                                                 **
+**                                                                           **
+**---------------------------------------------------------------------------**
+** Copyright: Andreas Eversberg                                              **
+**                                                                           **
+** Macros to do save string operations to avoid buffer overflows.            **
+**                                                                           **
+\*****************************************************************************/ 
+
+
+/* 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
+