--- /dev/null
+/*
+ * Copyright (c) 2014 Joel Sing <jsing@openbsd.org>
+ *
+ * Permission to use, copy, modify, and 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 <openssl/bio.h>
+#include <openssl/evp.h>
+
+#include <err.h>
+#include <stdio.h>
+
+#define BUF_SIZE 128
+
+struct base64_test {
+ const unsigned char in[BUF_SIZE];
+ const size_t in_len;
+ const unsigned char out[BUF_SIZE];
+ const size_t out_len;
+ const size_t valid_len;
+};
+
+/*
+ * Many of these tests are based on those found in Go's encoding/base64 tests.
+ */
+struct base64_test base64_tests[] = {
+
+ /* RFC3548 examples. */
+ { "\x14\xfb\x9c\x03\xd9\x7e", 6, "FPucA9l+", 8, 6, },
+ { "\x14\xfb\x9c\x03\xd9", 5, "FPucA9k=", 8, 5, },
+ { "\x14\xfb\x9c\x03", 4, "FPucAw==", 8, 4, },
+
+ /* RFC4648 examples. */
+ { "", 0, "", 0, 0, },
+ { "f", 1, "Zg==", 4, 1, },
+ { "fo", 2, "Zm8=", 4, 2, },
+ { "foo", 3, "Zm9v", 4, 3, },
+ { "foob", 4, "Zm9vYg==", 8, 4, },
+ { "fooba", 5, "Zm9vYmE=", 8, 5, },
+ { "foobar", 6, "Zm9vYmFy", 8, 6, },
+
+ /* Wikipedia examples. */
+ { "sure.", 5, "c3VyZS4=", 8, 5, },
+ { "sure", 4, "c3VyZQ==", 8, 4, },
+ { "sur", 3, "c3Vy", 4, 3, },
+ { "su", 2, "c3U=", 4, 2, },
+ { "leasure.", 8, "bGVhc3VyZS4=", 12, 8, },
+ { "easure.", 7, "ZWFzdXJlLg==", 12, 7, },
+ { "asure.", 6, "YXN1cmUu", 8, 6, },
+
+ { "abcd", 4, "YWJjZA==", 8, 4, },
+
+ {
+ "Twas brillig, and the slithy toves",
+ 34,
+ "VHdhcyBicmlsbGlnLCBhbmQgdGhlIHNsaXRoeSB0b3Zlcw==",
+ 48,
+ 34,
+ },
+
+#ifdef crash
+ {
+ "",
+ -1,
+ "YWJjZA======================================================"
+ "============",
+ 74,
+ 0,
+ },
+#endif
+};
+
+#define N_TESTS (sizeof(base64_tests) / sizeof(*base64_tests))
+
+struct base64_test base64_nl_tests[] = {
+
+ /* Corrupt/invalid encodings. */
+ { "", -1, "", 0, 0, },
+ { "", -1, "!!!!", 4, 0, }, /* 20 */
+ { "", -1, "====", 4, 1, }, /* XXX - output ix 0x0. */
+ { "", -1, "x===", 4, 1, },
+ { "", -1, "=AAA", 4, 3, },
+ { "", -1, "A=AA", 4, 3, },
+ { "", -1, "AA=A", 4, 2, },
+ { "", -1, "AA==A", 5, 0, },
+ { "", -1, "AAA=AAAA", 8, 6, },
+ { "", -1, "AAAAA", 5, 0, },
+ { "", -1, "AAAAAA", 6, 0, },
+ { "", -1, "A=", 2, 0, },
+ { "", -1, "A==", 3, 0, },
+ { "", -1, "AA=", 3, 0, },
+ { "", -1, "AA==", 4, 1, }, /* XXX - output ix 0x0. */
+ { "", -1, "AAA=", 4, 2, }, /* XXX - output ix 2x 0x0. */
+ { "", -1, "AAAA", 4, 3, }, /* XXX - output ix 3x 0x0. */
+ { "", -1, "AAAAAA=", 7, 0, },
+ { "", -1, "YWJjZA=====", 11, 0, },
+
+
+ /* Encodings with embedded CR/LF. */
+ { "sure", 4, "c3VyZQ==", 8, 4, },
+ { "sure", 4, "c3VyZQ==\r", 9, 4, },
+ { "sure", 4, "c3VyZQ==\n", 9, 4, },
+ { "sure", 4, "c3VyZQ==\r\n", 10, 4, },
+ { "sure", 4, "c3VyZ\r\nQ==", 10, 4, },
+ { "sure", 4, "c3V\ryZ\nQ==", 10, 4, },
+ { "sure", 4, "c3V\nyZ\rQ==", 10, 4, },
+ { "sure", 4, "c3VyZ\nQ==", 9, 4, },
+ { "sure", 4, "c3VyZQ\n==", 9, 4, },
+ { "sure", 4, "c3VyZQ=\n=", 9, 4, },
+ { "sure", 4, "c3VyZQ=\r\n\r\n=", 12, 4, },
+
+};
+
+#define N_NL_TESTS (sizeof(base64_nl_tests) / sizeof(*base64_nl_tests))
+
+struct base64_test base64_no_nl_tests[] = {
+
+ /*
+ * In non-newline mode, the output resulting from corrupt/invalid
+ * encodings is completely crazy. A number of zero bytes is returned
+ * rather than nothing.
+ */
+
+ /* Corrupt/invalid encodings. */
+ { "", -1, "", 0, 0, },
+ { "", -1, "!!!!", 4, 0, }, /* 20 */
+ { "", -1, "====", 4, 1, },
+ { "", -1, "x===", 4, 1, },
+ { "", -1, "=AAA", 4, 3, },
+ { "", -1, "A=AA", 4, 3, },
+ { "", -1, "AA=A", 4, 3, },
+ { "", -1, "AA==A", 5, 1, },
+ { "", -1, "AAA=AAAA", 8, 6, },
+ { "", -1, "AAAAA", 5, 3, },
+ { "", -1, "AAAAAA", 6, 3, },
+ { "", -1, "A=", 2, 0, },
+ { "", -1, "A==", 3, 0, },
+ { "", -1, "AA=", 3, 0, },
+ { "", -1, "AA==", 4, 1, },
+ { "", -1, "AAA=", 4, 2, },
+ { "", -1, "AAAA", 4, 3, },
+ { "", -1, "AAAAAA=", 7, 3, },
+ { "", -1, "YWJjZA=====", 11, 4, },
+
+ /* Encodings with embedded CR/LF. */
+ { "sure", 4, "c3VyZQ==", 8, 4, },
+ { "sure", 4, "c3VyZQ==\r", 9, 4, },
+ { "sure", 4, "c3VyZQ==\n", 9, 4, },
+ { "sure", 4, "c3VyZQ==\r\n", 10, 4, },
+ { "sure", -1, "c3VyZ\r\nQ==", 10, 0, },
+ { "sure", -1, "c3V\ryZ\nQ==", 10, 0, },
+ { "sure", -1, "c3V\nyZ\rQ==", 10, 0, },
+ { "sure", -1, "c3VyZ\nQ==", 9, 0, },
+ { "sure", -1, "c3VyZQ\n==", 9, 0, },
+ { "sure", -1, "c3VyZQ=\n=", 9, 0, },
+ { "sure", -1, "c3VyZQ=\r\n\r\n=", 12, 0, },
+
+};
+
+#define N_NO_NL_TESTS (sizeof(base64_no_nl_tests) / sizeof(*base64_no_nl_tests))
+
+int
+base64_encoding_test(int test_no, struct base64_test *bt, int test_nl)
+{
+ BIO *bio_b64, *bio_mem;
+ unsigned char *buf, *out;
+ int i, len, b64len;
+ int failure = 0;
+
+ buf = malloc(BUF_SIZE);
+ if (buf == NULL)
+ errx(1, "malloc");
+
+ bio_b64 = BIO_new(BIO_f_base64());
+ if (bio_b64 == NULL)
+ errx(1, "BIO_new failed for BIO_f_base64");
+
+ bio_mem = BIO_new(BIO_s_mem());
+ if (bio_mem == NULL)
+ errx(1, "BIO_new failed for BIO_s_mem");
+
+ bio_mem = BIO_push(bio_b64, bio_mem);
+
+ if (!test_nl)
+ BIO_set_flags(bio_b64, BIO_FLAGS_BASE64_NO_NL);
+
+ len = BIO_write(bio_mem, bt->in, bt->in_len);
+ if (len != bt->in_len) {
+ fprintf(stderr, "FAIL: test %i - only wrote %i out of %i "
+ "characters\n", test_no, len, bt->in_len);
+ failure = 1;
+ goto done;
+ }
+ if (BIO_flush(bio_mem) < 0) {
+ fprintf(stderr, "FAIL: test %i - flush failed\n", test_no);
+ failure = 1;
+ goto done;
+ }
+
+ b64len = 0;
+ for (i = 0; i < bt->out_len; i++) {
+ if (bt->out[i] == '\r' || bt->out[i] == '\n')
+ continue;
+ buf[b64len++] = bt->out[i];
+ }
+ if (test_nl)
+ buf[b64len++] = '\n';
+
+ len = BIO_get_mem_data(bio_mem, &out);
+
+ /* An empty string with NL results in no output, rather than '\n'. */
+ if (test_nl && b64len == 1 && len == 0)
+ goto done;
+
+ if (len != b64len) {
+ fprintf(stderr, "FAIL: test %i - encoding resulted in %i "
+ "characters instead of %i\n", test_no, len, b64len);
+ failure = 1;
+ goto done;
+ }
+
+ if (memcmp(buf, out, b64len) != 0) {
+ fprintf(stderr, "FAIL: test %i - encoding differs:\n", test_no);
+ fprintf(stderr, " encoding: ");
+ for (i = 0; i < len; i++)
+ fprintf(stderr, "%c", out[i]);
+ fprintf(stderr, "\n");
+ fprintf(stderr, " test data: ");
+ for (i = 0; i < bt->out_len; i++)
+ fprintf(stderr, "%c", buf[i]);
+ fprintf(stderr, "\n");
+ failure = 1;
+ }
+
+done:
+ BIO_free_all(bio_mem);
+ free(buf);
+
+ return failure;
+}
+
+int
+base64_decoding_test(int test_no, struct base64_test *bt, int test_nl)
+{
+ BIO *bio_b64, *bio_mem;
+ char *buf, *input;
+ int failure = 0;
+ int i, inlen, len;
+
+ buf = malloc(BUF_SIZE);
+ if (buf == NULL)
+ errx(1, "malloc");
+
+ input = (char *)bt->out;
+ inlen = bt->out_len;
+
+ if (test_nl)
+ inlen = asprintf(&input, "%s\r\n", bt->out);
+
+ bio_mem = BIO_new_mem_buf(input, inlen);
+ if (bio_mem == NULL)
+ errx(1, "BIO_new_mem_buf failed");
+
+ bio_b64 = BIO_new(BIO_f_base64());
+ if (bio_b64 == NULL)
+ errx(1, "BIO_new failed for BIO_f_base64");
+
+ if (!test_nl)
+ BIO_set_flags(bio_b64, BIO_FLAGS_BASE64_NO_NL);
+
+ bio_mem = BIO_push(bio_b64, bio_mem);
+
+ /*
+ * If we wrote zero characters then a BIO_read will result in a return
+ * value of -1, hence we need to handle this case.
+ */
+ len = BIO_read(bio_mem, buf, BUF_SIZE);
+ if (len != bt->valid_len && (bt->in_len != 0 || len != -1)) {
+ fprintf(stderr, "FAIL: test %i - decoding resulted in %i "
+ "characters instead of %i\n", test_no, len, bt->valid_len);
+ fprintf(stderr, " input: ");
+ for (i = 0; i < inlen; i++)
+ fprintf(stderr, "%c", input[i]);
+ fprintf(stderr, "\n");
+ fprintf(stderr, " decoding: ");
+ for (i = 0; i < len; i++)
+ fprintf(stderr, "0x%x ", buf[i]);
+ fprintf(stderr, "\n");
+ failure = 1;
+ goto done;
+ }
+
+ /* See if we expect this to fail decoding. */
+ if (bt->in_len == -1)
+ goto done;
+
+ if (memcmp(bt->in, buf, bt->in_len) != 0) {
+ fprintf(stderr, "FAIL: test %i - decoding differs:\n", test_no);
+ fprintf(stderr, " decoding: ");
+ for (i = 0; i < len; i++)
+ fprintf(stderr, "0x%x ", buf[i]);
+ fprintf(stderr, "\n");
+ fprintf(stderr, " test data: ");
+ for (i = 0; i < inlen; i++)
+ fprintf(stderr, "0x%x ", input[i]);
+ fprintf(stderr, "\n");
+ failure = 1;
+ }
+
+done:
+ BIO_free_all(bio_mem);
+ free(buf);
+ if (test_nl)
+ free(input);
+
+ return failure;
+}
+
+int
+main(int argc, char **argv)
+{
+ struct base64_test *bt;
+ int failed = 0;
+ int i;
+
+ fprintf(stderr, "Starting combined tests...\n");
+
+ for (i = 0; i < N_TESTS; i++) {
+ bt = &base64_tests[i];
+ if (bt->in_len != -1)
+ failed += base64_encoding_test(i, bt, 0);
+ if (bt->out_len != -1)
+ failed += base64_decoding_test(i, bt, 0);
+ if (bt->in_len != -1)
+ failed += base64_encoding_test(i, bt, 1);
+ if (bt->out_len != -1)
+ failed += base64_decoding_test(i, bt, 1);
+ }
+
+ fprintf(stderr, "Starting NL tests...\n");
+
+ for (i = 0; i < N_NL_TESTS; i++) {
+ bt = &base64_nl_tests[i];
+
+ if (bt->in_len != -1)
+ failed += base64_encoding_test(i, bt, 1);
+ if (bt->out_len != -1)
+ failed += base64_decoding_test(i, bt, 1);
+ }
+
+ fprintf(stderr, "Starting NO NL tests...\n");
+
+ for (i = 0; i < N_NO_NL_TESTS; i++) {
+ bt = &base64_no_nl_tests[i];
+
+ if (bt->in_len != -1)
+ failed += base64_encoding_test(i, bt, 0);
+ if (bt->out_len != -1)
+ failed += base64_decoding_test(i, bt, 0);
+ }
+
+ return failed;
+}
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