1 files changed, 95 insertions, 0 deletions
diff --git a/release/src/linux/linux/net/ipv4/netfilter/regexp/regsub.c b/release/src/linux/linux/net/ipv4/netfilter/regexp/regsub.c
new file mode 100644
index 00000000..339631f0
--- /dev/null
+++ b/release/src/linux/linux/net/ipv4/netfilter/regexp/regsub.c
@@ -0,0 +1,95 @@
+/*
+ * regsub
+ * @(#)regsub.c	1.3 of 2 April 86
+ *
+ *	Copyright (c) 1986 by University of Toronto.
+ *	Written by Henry Spencer.  Not derived from licensed software.
+ *
+ *	Permission is granted to anyone to use this software for any
+ *	purpose on any computer system, and to redistribute it freely,
+ *	subject to the following restrictions:
+ *
+ *	1. The author is not responsible for the consequences of use of
+ *		this software, no matter how awful, even if they arise
+ *		from defects in it.
+ *
+ *	2. The origin of this software must not be misrepresented, either
+ *		by explicit claim or by omission.
+ *
+ *	3. Altered versions must be plainly marked as such, and must not
+ *		be misrepresented as being the original software.
+ *
+ *
+ * This code was modified by Ethan Sommer to work within the kernel
+ * (it now uses kmalloc etc..)
+ *
+ */
+#include "regexp.h"
+#include "regmagic.h"
+#include <linux/string.h>
+
+
+#ifndef CHARBITS
+#define	UCHARAT(p)	((int)*(unsigned char *)(p))
+#else
+#define	UCHARAT(p)	((int)*(p)&CHARBITS)
+#endif
+
+#if 0
+//void regerror(char * s)
+//{
+//        printk("regexp(3): %s", s);
+//        /* NOTREACHED */
+//}
+#endif
+
+/*
+ - regsub - perform substitutions after a regexp match
+ */
+void
+regsub(regexp * prog, char * source, char * dest)
+{
+	register char *src;
+	register char *dst;
+	register char c;
+	register int no;
+	register int len;
+	
+	/* Not necessary and gcc doesn't like it -MLS */
+	/*extern char *strncpy();*/
+
+	if (prog == NULL || source == NULL || dest == NULL) {
+		regerror("NULL parm to regsub");
+		return;
+	}
+	if (UCHARAT(prog->program) != MAGIC) {
+		regerror("damaged regexp fed to regsub");
+		return;
+	}
+
+	src = source;
+	dst = dest;
+	while ((c = *src++) != '\0') {
+		if (c == '&')
+			no = 0;
+		else if (c == '\\' && '0' <= *src && *src <= '9')
+			no = *src++ - '0';
+		else
+			no = -1;
+
+		if (no < 0) {	/* Ordinary character. */
+			if (c == '\\' && (*src == '\\' || *src == '&'))
+				c = *src++;
+			*dst++ = c;
+		} else if (prog->startp[no] != NULL && prog->endp[no] != NULL) {
+			len = prog->endp[no] - prog->startp[no];
+			(void) strncpy(dst, prog->startp[no], len);
+			dst += len;
+			if (len != 0 && *(dst-1) == '\0') {	/* strncpy hit NUL. */
+				regerror("damaged match string");
+				return;
+			}
+		}
+	}
+	*dst++ = '\0';
+}