nvram: fix crash when get, set or unset is invoked without argument (#7263)

SVN-Revision: 21288

package/nvram/Makefile

@@ -8,7 +8,7 @@
 include $(TOPDIR)/rules.mk
 
 PKG_NAME:=nvram
-PKG_RELEASE:=5
+PKG_RELEASE:=6
 
 PKG_BUILD_DIR := $(BUILD_DIR)/$(PKG_NAME)
 

package/nvram/src/cli.c

@@ -165,20 +165,32 @@ int main( int argc, const char *argv[] )
 				stat = do_info(nvram);
 				done++;
 			}
-			else if( !strcmp(argv[i], "get") && ++i < argc )
+			else if( !strcmp(argv[i], "get") || !strcmp(argv[i], "unset") || !strcmp(argv[i], "set") )
 			{
-				stat = do_get(nvram, argv[i]);
-				done++;
-			}
-			else if( !strcmp(argv[i], "unset") && ++i < argc )
+				if( (i+1) < argc )
 				{
+					switch(argv[i++][0])
+					{
+						case 'g':
+							stat = do_get(nvram, argv[i]);
+							break;
+
+						case 'u':
 							stat = do_unset(nvram, argv[i]);
+							break;
+
+						case 's':
+							stat = do_set(nvram, argv[i]);
+							break;
+					}
 					done++;
 				}
-			else if( !strcmp(argv[i], "set") && ++i < argc )
+				else
 				{
-				stat = do_set(nvram, argv[i]);
-				done++;
+					fprintf(stderr, "Command '%s' requires an argument!\n", argv[i]);
+					done = 0;
+					break;
+				}
 			}
 			else if( !strcmp(argv[i], "commit") )
 			{