/* BEGIN_HEADER */
#include "mbedtls/md.h"
/* END_HEADER */

/* BEGIN_DEPENDENCIES
 * depends_on:MBEDTLS_MD_C
 * END_DEPENDENCIES
 */

/* BEGIN_CASE */
void mbedtls_md_process()
{
    const int *md_type_ptr;
    const mbedtls_md_info_t *info;
    mbedtls_md_context_t ctx;
    unsigned char buf[150];

    mbedtls_md_init(&ctx);
    memset(buf, 0, sizeof(buf));

    /*
     * Very minimal testing of mbedtls_md_process, just make sure the various
     * xxx_process_wrap() function pointers are valid. (Testing that they
     * indeed do the right thing would require messing with the internal
     * state of the underlying mbedtls_md/sha context.)
     *
     * Also tests that mbedtls_md_list() only returns valid MDs.
     */
    for (md_type_ptr = mbedtls_md_list(); *md_type_ptr != 0; md_type_ptr++) {
        info = mbedtls_md_info_from_type(*md_type_ptr);
        TEST_ASSERT(info != NULL);
        TEST_EQUAL(0, mbedtls_md_setup(&ctx, info, 0));
        TEST_EQUAL(0, mbedtls_md_starts(&ctx));
        TEST_EQUAL(0, mbedtls_md_process(&ctx, buf));
        mbedtls_md_free(&ctx);
    }

exit:
    mbedtls_md_free(&ctx);
}
/* END_CASE */

/* BEGIN_CASE */
void md_null_args()
{
    mbedtls_md_context_t ctx;
    const mbedtls_md_info_t *info = mbedtls_md_info_from_type(*(mbedtls_md_list()));
    unsigned char buf[1] = { 0 };

    mbedtls_md_init(&ctx);

    TEST_EQUAL(0, mbedtls_md_get_size(NULL));
    TEST_EQUAL(mbedtls_md_get_type(NULL), MBEDTLS_MD_NONE);
    TEST_ASSERT(mbedtls_md_get_name(NULL) == NULL);

    TEST_ASSERT(mbedtls_md_info_from_string(NULL) == NULL);

    TEST_EQUAL(mbedtls_md_setup(&ctx, NULL, 0), MBEDTLS_ERR_MD_BAD_INPUT_DATA);
    TEST_EQUAL(mbedtls_md_setup(NULL, info, 0), MBEDTLS_ERR_MD_BAD_INPUT_DATA);

    TEST_EQUAL(mbedtls_md_starts(NULL), MBEDTLS_ERR_MD_BAD_INPUT_DATA);
    TEST_EQUAL(mbedtls_md_starts(&ctx), MBEDTLS_ERR_MD_BAD_INPUT_DATA);

    TEST_EQUAL(mbedtls_md_update(NULL, buf, 1), MBEDTLS_ERR_MD_BAD_INPUT_DATA);
    TEST_EQUAL(mbedtls_md_update(&ctx, buf, 1), MBEDTLS_ERR_MD_BAD_INPUT_DATA);

    TEST_EQUAL(mbedtls_md_finish(NULL, buf), MBEDTLS_ERR_MD_BAD_INPUT_DATA);
    TEST_EQUAL(mbedtls_md_finish(&ctx, buf), MBEDTLS_ERR_MD_BAD_INPUT_DATA);

    TEST_EQUAL(mbedtls_md(NULL, buf, 1, buf), MBEDTLS_ERR_MD_BAD_INPUT_DATA);

#if defined(MBEDTLS_FS_IO)
    TEST_EQUAL(mbedtls_md_file(NULL, "", buf), MBEDTLS_ERR_MD_BAD_INPUT_DATA);
#endif

    TEST_EQUAL(mbedtls_md_hmac_starts(NULL, buf, 1),
               MBEDTLS_ERR_MD_BAD_INPUT_DATA);
    TEST_EQUAL(mbedtls_md_hmac_starts(&ctx, buf, 1),
               MBEDTLS_ERR_MD_BAD_INPUT_DATA);

    TEST_EQUAL(mbedtls_md_hmac_update(NULL, buf, 1),
               MBEDTLS_ERR_MD_BAD_INPUT_DATA);
    TEST_EQUAL(mbedtls_md_hmac_update(&ctx, buf, 1),
               MBEDTLS_ERR_MD_BAD_INPUT_DATA);

    TEST_EQUAL(mbedtls_md_hmac_finish(NULL, buf), MBEDTLS_ERR_MD_BAD_INPUT_DATA);
    TEST_EQUAL(mbedtls_md_hmac_finish(&ctx, buf), MBEDTLS_ERR_MD_BAD_INPUT_DATA);

    TEST_EQUAL(mbedtls_md_hmac_reset(NULL), MBEDTLS_ERR_MD_BAD_INPUT_DATA);
    TEST_EQUAL(mbedtls_md_hmac_reset(&ctx), MBEDTLS_ERR_MD_BAD_INPUT_DATA);

    TEST_EQUAL(mbedtls_md_hmac(NULL, buf, 1, buf, 1, buf),
               MBEDTLS_ERR_MD_BAD_INPUT_DATA);

    TEST_EQUAL(mbedtls_md_process(NULL, buf), MBEDTLS_ERR_MD_BAD_INPUT_DATA);
    TEST_EQUAL(mbedtls_md_process(&ctx, buf), MBEDTLS_ERR_MD_BAD_INPUT_DATA);

    /* Ok, this is not NULL arg but NULL return... */
    TEST_ASSERT(mbedtls_md_info_from_type(MBEDTLS_MD_NONE) == NULL);
    TEST_ASSERT(mbedtls_md_info_from_string("no such md") == NULL);
}
/* END_CASE */

/* BEGIN_CASE */
void md_info(int md_type, char *md_name, int md_size)
{
    const mbedtls_md_info_t *md_info;
    const int *md_type_ptr;
    int found;

    md_info = mbedtls_md_info_from_type(md_type);
    TEST_ASSERT(md_info != NULL);
    TEST_ASSERT(md_info == mbedtls_md_info_from_string(md_name));

    TEST_EQUAL(mbedtls_md_get_type(md_info), (mbedtls_md_type_t) md_type);
    TEST_EQUAL(mbedtls_md_get_size(md_info), (unsigned char) md_size);
    TEST_EQUAL(0, strcmp(mbedtls_md_get_name(md_info), md_name));

    found = 0;
    for (md_type_ptr = mbedtls_md_list(); *md_type_ptr != 0; md_type_ptr++) {
        if (*md_type_ptr == md_type) {
            found = 1;
        }
    }
    TEST_EQUAL(found, 1);
}
/* END_CASE */

/* BEGIN_CASE */
void md_text(int md_type, char *text_src_string, data_t *hash)
{
    unsigned char *src = (unsigned char *) text_src_string;
    size_t src_len = strlen(text_src_string);
    unsigned char output[MBEDTLS_MD_MAX_SIZE] = { 0 };
    const mbedtls_md_info_t *md_info = NULL;

    md_info = mbedtls_md_info_from_type(md_type);
    TEST_ASSERT(md_info != NULL);

    TEST_EQUAL(0, mbedtls_md(md_info, src, src_len, output));

    ASSERT_COMPARE(output, mbedtls_md_get_size(md_info), hash->x, hash->len);
}
/* END_CASE */

/* BEGIN_CASE */
void md_hex(int md_type, data_t *src_str, data_t *hash)
{
    unsigned char output[MBEDTLS_MD_MAX_SIZE] = { 0 };
    const mbedtls_md_info_t *md_info = NULL;

    md_info = mbedtls_md_info_from_type(md_type);
    TEST_ASSERT(md_info != NULL);

    TEST_EQUAL(0, mbedtls_md(md_info, src_str->x, src_str->len, output));


    ASSERT_COMPARE(output, mbedtls_md_get_size(md_info), hash->x, hash->len);
}
/* END_CASE */

/* BEGIN_CASE */
void md_text_multi(int md_type, char *text_src_string,
                   data_t *hash)
{
    unsigned char *src = (unsigned char *) text_src_string;
    size_t src_len = strlen(text_src_string);
    unsigned char output[MBEDTLS_MD_MAX_SIZE] = { 0 };
    size_t halfway;

    const mbedtls_md_info_t *md_info = NULL;
    mbedtls_md_context_t ctx, ctx_copy;

    mbedtls_md_init(&ctx);
    mbedtls_md_init(&ctx_copy);

    halfway = src_len / 2;

    md_info = mbedtls_md_info_from_type(md_type);
    TEST_ASSERT(md_info != NULL);
    TEST_EQUAL(0, mbedtls_md_setup(&ctx, md_info, 0));
    TEST_EQUAL(0, mbedtls_md_setup(&ctx_copy, md_info, 0));

    TEST_EQUAL(0, mbedtls_md_starts(&ctx));
    TEST_ASSERT(ctx.md_ctx != NULL);
    TEST_EQUAL(0, mbedtls_md_update(&ctx, src, halfway));
    TEST_EQUAL(0, mbedtls_md_clone(&ctx_copy, &ctx));

    TEST_EQUAL(0, mbedtls_md_update(&ctx, src + halfway, src_len - halfway));
    TEST_EQUAL(0, mbedtls_md_finish(&ctx, output));
    ASSERT_COMPARE(output, mbedtls_md_get_size(md_info), hash->x, hash->len);

    /* Test clone */
    memset(output, 0x00, sizeof(output));

    TEST_EQUAL(0, mbedtls_md_update(&ctx_copy, src + halfway, src_len - halfway));
    TEST_EQUAL(0, mbedtls_md_finish(&ctx_copy, output));
    ASSERT_COMPARE(output, mbedtls_md_get_size(md_info), hash->x, hash->len);

exit:
    mbedtls_md_free(&ctx);
    mbedtls_md_free(&ctx_copy);
}
/* END_CASE */

/* BEGIN_CASE */
void md_hex_multi(int md_type, data_t *src_str, data_t *hash)
{
    unsigned char output[MBEDTLS_MD_MAX_SIZE] = { 0 };
    const mbedtls_md_info_t *md_info = NULL;
    mbedtls_md_context_t ctx, ctx_copy;
    int halfway;

    mbedtls_md_init(&ctx);
    mbedtls_md_init(&ctx_copy);

    md_info = mbedtls_md_info_from_type(md_type);
    TEST_ASSERT(md_info != NULL);
    TEST_EQUAL(0, mbedtls_md_setup(&ctx, md_info, 0));
    TEST_EQUAL(0, mbedtls_md_setup(&ctx_copy, md_info, 0));

    halfway = src_str->len / 2;

    TEST_EQUAL(0, mbedtls_md_starts(&ctx));
    TEST_ASSERT(ctx.md_ctx != NULL);
    TEST_EQUAL(0, mbedtls_md_update(&ctx, src_str->x, halfway));
    TEST_EQUAL(0, mbedtls_md_clone(&ctx_copy, &ctx));

    TEST_EQUAL(0, mbedtls_md_update(&ctx, src_str->x + halfway, src_str->len - halfway));
    TEST_EQUAL(0, mbedtls_md_finish(&ctx, output));
    ASSERT_COMPARE(output, mbedtls_md_get_size(md_info), hash->x, hash->len);

    /* Test clone */
    memset(output, 0x00, sizeof(output));

    TEST_EQUAL(0, mbedtls_md_update(&ctx_copy, src_str->x + halfway, src_str->len - halfway));
    TEST_EQUAL(0, mbedtls_md_finish(&ctx_copy, output));
    ASSERT_COMPARE(output, mbedtls_md_get_size(md_info), hash->x, hash->len);

exit:
    mbedtls_md_free(&ctx);
    mbedtls_md_free(&ctx_copy);
}
/* END_CASE */

/* BEGIN_CASE */
void mbedtls_md_hmac(int md_type, int trunc_size,
                     data_t *key_str, data_t *src_str,
                     data_t *hash)
{
    unsigned char output[MBEDTLS_MD_MAX_SIZE] = { 0 };
    const mbedtls_md_info_t *md_info = NULL;

    md_info = mbedtls_md_info_from_type(md_type);
    TEST_ASSERT(md_info != NULL);


    TEST_EQUAL(0, mbedtls_md_hmac(md_info, key_str->x, key_str->len,
                                  src_str->x, src_str->len, output));

    ASSERT_COMPARE(output, trunc_size, hash->x, hash->len);
}
/* END_CASE */

/* BEGIN_CASE */
void md_hmac_multi(int md_type, int trunc_size, data_t *key_str,
                   data_t *src_str, data_t *hash)
{
    unsigned char output[MBEDTLS_MD_MAX_SIZE] = { 0 };
    const mbedtls_md_info_t *md_info = NULL;
    mbedtls_md_context_t ctx;
    int halfway;

    mbedtls_md_init(&ctx);

    md_info = mbedtls_md_info_from_type(md_type);
    TEST_ASSERT(md_info != NULL);
    TEST_EQUAL(0, mbedtls_md_setup(&ctx, md_info, 1));

    halfway = src_str->len / 2;

    TEST_EQUAL(0, mbedtls_md_hmac_starts(&ctx, key_str->x, key_str->len));
    TEST_ASSERT(ctx.md_ctx != NULL);
    TEST_EQUAL(0, mbedtls_md_hmac_update(&ctx, src_str->x, halfway));
    TEST_EQUAL(0, mbedtls_md_hmac_update(&ctx, src_str->x + halfway, src_str->len - halfway));
    TEST_EQUAL(0, mbedtls_md_hmac_finish(&ctx, output));

    ASSERT_COMPARE(output, trunc_size, hash->x, hash->len);

    /* Test again, for reset() */
    memset(output, 0x00, sizeof(output));

    TEST_EQUAL(0, mbedtls_md_hmac_reset(&ctx));
    TEST_EQUAL(0, mbedtls_md_hmac_update(&ctx, src_str->x, halfway));
    TEST_EQUAL(0, mbedtls_md_hmac_update(&ctx, src_str->x + halfway, src_str->len - halfway));
    TEST_EQUAL(0, mbedtls_md_hmac_finish(&ctx, output));

    ASSERT_COMPARE(output, trunc_size, hash->x, hash->len);

exit:
    mbedtls_md_free(&ctx);
}
/* END_CASE */

/* BEGIN_CASE depends_on:MBEDTLS_FS_IO */
void mbedtls_md_file(int md_type, char *filename,
                     data_t *hash)
{
    unsigned char output[MBEDTLS_MD_MAX_SIZE] = { 0 };
    const mbedtls_md_info_t *md_info = NULL;

    md_info = mbedtls_md_info_from_type(md_type);
    TEST_ASSERT(md_info != NULL);

    TEST_EQUAL(0, mbedtls_md_file(md_info, filename, output));

    ASSERT_COMPARE(output, mbedtls_md_get_size(md_info), hash->x, hash->len);
}
/* END_CASE */
