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File netkit-rsh-0.17-checkdir.diff of Package rsh

--- rcp/rcp.c
+++ rcp/rcp.c
@@ -716,6 +716,10 @@
 			size = size * 10 + (*cp++ - '0');
 		if (*cp++ != ' ')
 			SCREWUP("size not delimited");
+		if ((strchr(cp, '/') != NULL) || (strcmp(cp, "..") == 0)) {
+			error("rcp: unexpected filename: %s", cp);
+			exit(1);
+		}
 		if (targisdir) {
 			static char *namebuf;
 			static int cursize;
@@ -734,6 +738,8 @@
 			np = targ;
 		exists = stat(np, &stb) == 0;
 		if (buf[0] == 'D') {
+			if (!iamrecursive)
+				SCREWUP("received directory without -r");
 			if (exists) {
 				if ((stb.st_mode&S_IFMT) != S_IFDIR) {
 					errno = ENOTDIR;