| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| */ |
| |
| #include <CUnit/CUnit.h> |
| #include <guacamole/string.h> |
| |
| #include <stdlib.h> |
| #include <string.h> |
| |
| /** |
| * Verify guac_strlcat() behavior when the string fits the buffer without |
| * truncation. The return value of each call should be the length of the |
| * resulting string. Each resulting string should contain the full result of |
| * the concatenation, including null terminator. |
| */ |
| void test_string__strlcat() { |
| |
| char buffer[1024]; |
| |
| memset(buffer, 0xFF, sizeof(buffer)); |
| strcpy(buffer, "Apache "); |
| CU_ASSERT_EQUAL(guac_strlcat(buffer, "Guacamole", sizeof(buffer)), 16); |
| CU_ASSERT_STRING_EQUAL(buffer, "Apache Guacamole"); |
| CU_ASSERT_EQUAL(buffer[17], '\xFF'); |
| |
| memset(buffer, 0xFF, sizeof(buffer)); |
| strcpy(buffer, ""); |
| CU_ASSERT_EQUAL(guac_strlcat(buffer, "This is a test", sizeof(buffer)), 14); |
| CU_ASSERT_STRING_EQUAL(buffer, "This is a test"); |
| CU_ASSERT_EQUAL(buffer[15], '\xFF'); |
| |
| memset(buffer, 0xFF, sizeof(buffer)); |
| strcpy(buffer, "AB"); |
| CU_ASSERT_EQUAL(guac_strlcat(buffer, "X", sizeof(buffer)), 3); |
| CU_ASSERT_STRING_EQUAL(buffer, "ABX"); |
| CU_ASSERT_EQUAL(buffer[4], '\xFF'); |
| |
| memset(buffer, 0xFF, sizeof(buffer)); |
| strcpy(buffer, "X"); |
| CU_ASSERT_EQUAL(guac_strlcat(buffer, "", sizeof(buffer)), 1); |
| CU_ASSERT_STRING_EQUAL(buffer, "X"); |
| CU_ASSERT_EQUAL(buffer[2], '\xFF'); |
| |
| memset(buffer, 0xFF, sizeof(buffer)); |
| strcpy(buffer, ""); |
| CU_ASSERT_EQUAL(guac_strlcat(buffer, "", sizeof(buffer)), 0); |
| CU_ASSERT_STRING_EQUAL(buffer, ""); |
| CU_ASSERT_EQUAL(buffer[1], '\xFF'); |
| |
| } |
| |
| /** |
| * Verify guac_strlcat() behavior when the string must be truncated to fit the |
| * buffer. The return value of each call should be the length that would result |
| * from concatenating the strings given an infinite buffer, however only as |
| * many characters as can fit should be appended to the string within the |
| * buffer, and the buffer should be null-terminated. |
| */ |
| void test_string__strlcat_truncate() { |
| |
| char buffer[1024]; |
| |
| memset(buffer, 0xFF, sizeof(buffer)); |
| strcpy(buffer, "Apache "); |
| CU_ASSERT_EQUAL(guac_strlcat(buffer, "Guacamole", 9), 16); |
| CU_ASSERT_STRING_EQUAL(buffer, "Apache G"); |
| CU_ASSERT_EQUAL(buffer[9], '\xFF'); |
| |
| memset(buffer, 0xFF, sizeof(buffer)); |
| strcpy(buffer, ""); |
| CU_ASSERT_EQUAL(guac_strlcat(buffer, "This is a test", 10), 14); |
| CU_ASSERT_STRING_EQUAL(buffer, "This is a"); |
| CU_ASSERT_EQUAL(buffer[10], '\xFF'); |
| |
| memset(buffer, 0xFF, sizeof(buffer)); |
| strcpy(buffer, "This "); |
| CU_ASSERT_EQUAL(guac_strlcat(buffer, "is ANOTHER test", 6), 20); |
| CU_ASSERT_STRING_EQUAL(buffer, "This "); |
| CU_ASSERT_EQUAL(buffer[6], '\xFF'); |
| |
| } |
| |
| /** |
| * Verify guac_strlcat() behavior with zero buffer sizes. The return value of |
| * each call should be the size of the input string, while the buffer remains |
| * untouched. |
| */ |
| void test_string__strlcat_nospace() { |
| |
| /* 0-byte buffer plus 1 guard byte (to test overrun) */ |
| char buffer[1] = { '\xFF' }; |
| |
| CU_ASSERT_EQUAL(guac_strlcat(buffer, "Guacamole", 0), 9); |
| CU_ASSERT_EQUAL(buffer[0], '\xFF'); |
| |
| CU_ASSERT_EQUAL(guac_strlcat(buffer, "This is a test", 0), 14); |
| CU_ASSERT_EQUAL(buffer[0], '\xFF'); |
| |
| CU_ASSERT_EQUAL(guac_strlcat(buffer, "X", 0), 1); |
| CU_ASSERT_EQUAL(buffer[0], '\xFF'); |
| |
| CU_ASSERT_EQUAL(guac_strlcat(buffer, "", 0), 0); |
| CU_ASSERT_EQUAL(buffer[0], '\xFF'); |
| |
| } |
| |
| /** |
| * Verify guac_strlcat() behavior with unterminated buffers. With respect to |
| * the return value, the length of the string in the buffer should be |
| * considered equal to the size of the buffer, however the resulting buffer |
| * should not be null-terminated. |
| */ |
| void test_string__strlcat_nonull() { |
| |
| char expected[1024]; |
| memset(expected, 0xFF, sizeof(expected)); |
| |
| char buffer[1024]; |
| |
| memset(buffer, 0xFF, sizeof(buffer)); |
| CU_ASSERT_EQUAL(guac_strlcat(buffer, "Guacamole", 256), 265); |
| CU_ASSERT_NSTRING_EQUAL(buffer, expected, sizeof(expected)); |
| |
| memset(buffer, 0xFF, sizeof(buffer)); |
| CU_ASSERT_EQUAL(guac_strlcat(buffer, "This is a test", 37), 51); |
| CU_ASSERT_NSTRING_EQUAL(buffer, expected, sizeof(expected)); |
| |
| memset(buffer, 0xFF, sizeof(buffer)); |
| CU_ASSERT_EQUAL(guac_strlcat(buffer, "X", 12), 13); |
| CU_ASSERT_NSTRING_EQUAL(buffer, expected, sizeof(expected)); |
| |
| memset(buffer, 0xFF, sizeof(buffer)); |
| CU_ASSERT_EQUAL(guac_strlcat(buffer, "", 100), 100); |
| CU_ASSERT_NSTRING_EQUAL(buffer, expected, sizeof(expected)); |
| |
| } |
| |