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- /* Copyright (c) 2014, Google Inc.
- *
- * Permission to use, copy, modify, and/or distribute this software for any
- * purpose with or without fee is hereby granted, provided that the above
- * copyright notice and this permission notice appear in all copies.
- *
- * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
- * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
- * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
- * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
- * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
- * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
- * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
-
- #include <stdio.h>
- #include <string.h>
-
- #include <openssl/base64.h>
- #include <openssl/crypto.h>
- #include <openssl/err.h>
-
-
- struct TestVector {
- const char *decoded;
- const char *encoded;
- };
-
- // Test vectors from RFC 4648.
- static const TestVector kTestVectors[] = {
- { "", "" },
- { "f" , "Zg==" },
- { "fo", "Zm8=" },
- { "foo", "Zm9v" },
- { "foob", "Zm9vYg==" },
- { "fooba", "Zm9vYmE=" },
- { "foobar", "Zm9vYmFy" },
- };
-
- static const size_t kNumTests = sizeof(kTestVectors) / sizeof(kTestVectors[0]);
-
- static bool TestEncode() {
- for (size_t i = 0; i < kNumTests; i++) {
- const TestVector *t = &kTestVectors[i];
- uint8_t out[9];
- size_t len = EVP_EncodeBlock(out, (const uint8_t*)t->decoded,
- strlen(t->decoded));
- if (len != strlen(t->encoded) ||
- memcmp(out, t->encoded, len) != 0) {
- fprintf(stderr, "encode(\"%s\") = \"%.*s\", want \"%s\"\n",
- t->decoded, (int)len, (const char*)out, t->encoded);
- return false;
- }
- }
- return true;
- }
-
- static bool TestDecode() {
- uint8_t out[6];
- size_t len;
-
- for (size_t i = 0; i < kNumTests; i++) {
- // Test the normal API.
- const TestVector *t = &kTestVectors[i];
- size_t expected_len = strlen(t->decoded);
- if (!EVP_DecodeBase64(out, &len, sizeof(out),
- (const uint8_t*)t->encoded, strlen(t->encoded))) {
- fprintf(stderr, "decode(\"%s\") failed\n", t->encoded);
- return false;
- }
- if (len != strlen(t->decoded) ||
- memcmp(out, t->decoded, len) != 0) {
- fprintf(stderr, "decode(\"%s\") = \"%.*s\", want \"%s\"\n",
- t->encoded, (int)len, (const char*)out, t->decoded);
- return false;
- }
-
- // Test that the padding behavior of the deprecated API is preserved.
- int ret = EVP_DecodeBlock(out, (const uint8_t*)t->encoded,
- strlen(t->encoded));
- if (ret < 0) {
- fprintf(stderr, "decode(\"%s\") failed\n", t->encoded);
- return false;
- }
- if (ret % 3 != 0) {
- fprintf(stderr, "EVP_DecodeBlock did not ignore padding\n");
- return false;
- }
- if (expected_len % 3 != 0) {
- ret -= 3 - (expected_len % 3);
- }
- if (static_cast<size_t>(ret) != strlen(t->decoded) ||
- memcmp(out, t->decoded, ret) != 0) {
- fprintf(stderr, "decode(\"%s\") = \"%.*s\", want \"%s\"\n",
- t->encoded, ret, (const char*)out, t->decoded);
- return false;
- }
- }
-
- if (EVP_DecodeBase64(out, &len, sizeof(out), (const uint8_t*)"a!bc", 4)) {
- fprintf(stderr, "Failed to reject invalid characters in the middle.\n");
- return false;
- }
-
- if (EVP_DecodeBase64(out, &len, sizeof(out), (const uint8_t*)"a=bc", 4)) {
- fprintf(stderr, "Failed to reject invalid characters in the middle.\n");
- return false;
- }
-
- if (EVP_DecodeBase64(out, &len, sizeof(out), (const uint8_t*)"abc", 4)) {
- fprintf(stderr, "Failed to reject invalid input length.\n");
- return false;
- }
-
- return true;
- }
-
- int main(void) {
- CRYPTO_library_init();
- ERR_load_crypto_strings();
-
- if (!TestEncode() ||
- !TestDecode()) {
- return 1;
- }
-
- printf("PASS\n");
- return 0;
- }
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