mbedtls/tests/suites/test_suite_debug.function

/* BEGIN_HEADER */
#include "debug_internal.h"
#include "string.h"
#include "mbedtls/pk.h"
#include <test/ssl_helpers.h>

#if defined(_WIN32)
#   include <stdlib.h>
#   include <crtdbg.h>
#endif

// Use a macro instead of sizeof(mbedtls_ms_time_t) because the expression store
// doesn't exclude entries based on depends_on headers, which would cause failures
// in builds without MBEDTLS_HAVE_TIME
#if defined(MBEDTLS_PLATFORM_MS_TIME_TYPE_MACRO)
#   define MBEDTLS_MS_TIME_SIZE sizeof(MBEDTLS_PLATFORM_MS_TIME_TYPE_MACRO)
#else
#   define MBEDTLS_MS_TIME_SIZE sizeof(int64_t)
#endif

struct buffer_data {
    char buf[2000];
    char *ptr;
};

#if defined(MBEDTLS_SSL_TLS_C)
static void string_debug(void *data, int level, const char *file, int line, const char *str)
{
    struct buffer_data *buffer = (struct buffer_data *) data;
    char *p = buffer->ptr;
    ((void) level);

    memcpy(p, file, strlen(file));
    p += strlen(file);

    *p++ = '(';
    *p++ = '0' + (line / 1000) % 10;
    *p++ = '0' + (line / 100) % 10;
    *p++ = '0' + (line / 10) % 10;
    *p++ = '0' + (line / 1) % 10;
    *p++ = ')';
    *p++ = ':';
    *p++ = ' ';

#if defined(MBEDTLS_THREADING_C)
    /* Skip "thread ID" (up to the first space) as it is not predictable */
    while (*str++ != ' ') {
        ;
    }
#endif

    memcpy(p, str, strlen(str));
    p += strlen(str);

    /* Detect if debug messages output partial lines and mark them */
    if (p[-1] != '\n') {
        *p++ = '*';
    }

    buffer->ptr = p;
}
#endif /* MBEDTLS_SSL_TLS_C */

#if defined(_WIN32)
static void noop_invalid_parameter_handler(
    const wchar_t *expression,
    const wchar_t *function,
    const wchar_t *file,
    unsigned int line,
    uintptr_t pReserved)
{
    (void) expression;
    (void) function;
    (void) file;
    (void) line;
    (void) pReserved;
}
#endif /* _WIN32 */

/* END_HEADER */

/* BEGIN_DEPENDENCIES
 * depends_on:MBEDTLS_DEBUG_C
 * END_DEPENDENCIES
 */

/* BEGIN_CASE */
void printf_int_expr(intmax_t smuggle_format_expr, /* TODO: teach test framework about string expressions */
                     intmax_t sizeof_x, intmax_t x, char *result)
{
#if defined(_WIN32)
    /* Windows treats any invalid format specifiers passsed to the CRT as fatal assertion failures.
       Disable this behaviour temporarily, so the rest of the test cases can complete. */
    _invalid_parameter_handler saved_handler =
        _set_invalid_parameter_handler(noop_invalid_parameter_handler);

    // Disable assertion pop-up window in Debug builds
    int saved_report_mode = _CrtSetReportMode(_CRT_ASSERT, _CRTDBG_REPORT_MODE);
    _CrtSetReportMode(_CRT_ASSERT, _CRTDBG_MODE_DEBUG);
#endif

    const char *format = (char *) ((uintptr_t) smuggle_format_expr);
    char *output = NULL;
    const size_t n = strlen(result);

    /* Nominal case: buffer just large enough */
    TEST_CALLOC(output, n + 1);
    if ((size_t) sizeof_x <= sizeof(int)) { // Any smaller integers would be promoted to an int due to calling a vararg function
        TEST_EQUAL(n, mbedtls_snprintf(output, n + 1, format, (int) x));
    } else if (sizeof_x == sizeof(long)) {
        TEST_EQUAL(n, mbedtls_snprintf(output, n + 1, format, (long) x));
    } else if (sizeof_x == sizeof(long long)) {
        TEST_EQUAL(n, mbedtls_snprintf(output, n + 1, format, (long long) x));
    } else {
        TEST_FAIL(
            "sizeof_x <= sizeof(int) || sizeof_x == sizeof(long) || sizeof_x == sizeof(long long)");
    }
    TEST_MEMORY_COMPARE(result, n + 1, output, n + 1);

exit:
    mbedtls_free(output);
    output = NULL;

#if defined(_WIN32)
    // Restore default Windows behaviour
    _set_invalid_parameter_handler(saved_handler);
    _CrtSetReportMode(_CRT_ASSERT, saved_report_mode);
    (void) saved_report_mode;
#endif
}
/* END_CASE */

/* BEGIN_CASE depends_on:MBEDTLS_SSL_TLS_C */
void debug_print_msg_threshold(int threshold, int level, char *file,
                               int line, char *result_str)
{
    mbedtls_ssl_context ssl;
    mbedtls_ssl_config conf;
    struct buffer_data buffer;

    MD_PSA_INIT();

    mbedtls_ssl_init(&ssl);
    mbedtls_ssl_config_init(&conf);
    memset(buffer.buf, 0, 2000);
    buffer.ptr = buffer.buf;

    TEST_EQUAL(mbedtls_ssl_config_defaults(&conf,
                                           MBEDTLS_SSL_IS_CLIENT,
                                           MBEDTLS_SSL_TRANSPORT_STREAM,
                                           MBEDTLS_SSL_PRESET_DEFAULT),
               0);
    mbedtls_ssl_conf_rng(&conf, mbedtls_test_random, NULL);
    mbedtls_ssl_conf_dbg(&conf, string_debug, &buffer);

    TEST_ASSERT(mbedtls_ssl_setup(&ssl, &conf) == 0);

    mbedtls_debug_set_threshold(threshold);

    mbedtls_debug_print_msg(&ssl, level, file, line,
                            "Text message, 2 == %d", 2);

    TEST_ASSERT(strcmp(buffer.buf, result_str) == 0);

exit:
    mbedtls_ssl_free(&ssl);
    mbedtls_ssl_config_free(&conf);
    MD_PSA_DONE();
}
/* END_CASE */

/* BEGIN_CASE depends_on:MBEDTLS_SSL_TLS_C */
void mbedtls_debug_print_ret(char *file, int line, char *text, int value,
                             char *result_str)
{
    mbedtls_ssl_context ssl;
    mbedtls_ssl_config conf;
    struct buffer_data buffer;

    MD_PSA_INIT();

    mbedtls_ssl_init(&ssl);
    mbedtls_ssl_config_init(&conf);
    memset(buffer.buf, 0, 2000);
    buffer.ptr = buffer.buf;

    TEST_EQUAL(mbedtls_ssl_config_defaults(&conf,
                                           MBEDTLS_SSL_IS_CLIENT,
                                           MBEDTLS_SSL_TRANSPORT_STREAM,
                                           MBEDTLS_SSL_PRESET_DEFAULT),
               0);
    mbedtls_ssl_conf_rng(&conf, mbedtls_test_random, NULL);
    mbedtls_ssl_conf_dbg(&conf, string_debug, &buffer);

    TEST_ASSERT(mbedtls_ssl_setup(&ssl, &conf) == 0);

    mbedtls_debug_print_ret(&ssl, 0, file, line, text, value);

    TEST_ASSERT(strcmp(buffer.buf, result_str) == 0);

exit:
    mbedtls_ssl_free(&ssl);
    mbedtls_ssl_config_free(&conf);
    MD_PSA_DONE();
}
/* END_CASE */

/* BEGIN_CASE depends_on:MBEDTLS_SSL_TLS_C */
void mbedtls_debug_print_buf(char *file, int line, char *text,
                             data_t *data, char *result_str)
{
    mbedtls_ssl_context ssl;
    mbedtls_ssl_config conf;
    struct buffer_data buffer;

    MD_PSA_INIT();

    mbedtls_ssl_init(&ssl);
    mbedtls_ssl_config_init(&conf);
    memset(buffer.buf, 0, 2000);
    buffer.ptr = buffer.buf;

    TEST_EQUAL(mbedtls_ssl_config_defaults(&conf,
                                           MBEDTLS_SSL_IS_CLIENT,
                                           MBEDTLS_SSL_TRANSPORT_STREAM,
                                           MBEDTLS_SSL_PRESET_DEFAULT),
               0);
    mbedtls_ssl_conf_rng(&conf, mbedtls_test_random, NULL);
    mbedtls_ssl_conf_dbg(&conf, string_debug, &buffer);

    TEST_ASSERT(mbedtls_ssl_setup(&ssl, &conf) == 0);

    mbedtls_debug_print_buf(&ssl, 0, file, line, text, data->x, data->len);

    TEST_ASSERT(strcmp(buffer.buf, result_str) == 0);

exit:
    mbedtls_ssl_free(&ssl);
    mbedtls_ssl_config_free(&conf);
    MD_PSA_DONE();
}
/* END_CASE */

/* BEGIN_CASE depends_on:MBEDTLS_SSL_TLS_C:MBEDTLS_FS_IO:MBEDTLS_X509_CRT_PARSE_C:!MBEDTLS_X509_REMOVE_INFO */
void mbedtls_debug_print_crt(char *crt_file, char *file, int line,
                             char *prefix, char *result_str)
{
    mbedtls_x509_crt   crt;
    mbedtls_ssl_context ssl;
    mbedtls_ssl_config conf;
    struct buffer_data buffer;

    mbedtls_ssl_init(&ssl);
    mbedtls_ssl_config_init(&conf);
    mbedtls_x509_crt_init(&crt);
    MD_OR_USE_PSA_INIT();

    memset(buffer.buf, 0, 2000);
    buffer.ptr = buffer.buf;

    TEST_EQUAL(mbedtls_ssl_config_defaults(&conf,
                                           MBEDTLS_SSL_IS_CLIENT,
                                           MBEDTLS_SSL_TRANSPORT_STREAM,
                                           MBEDTLS_SSL_PRESET_DEFAULT),
               0);
    mbedtls_ssl_conf_rng(&conf, mbedtls_test_random, NULL);
    mbedtls_ssl_conf_dbg(&conf, string_debug, &buffer);

    TEST_ASSERT(mbedtls_ssl_setup(&ssl, &conf) == 0);

    TEST_ASSERT(mbedtls_x509_crt_parse_file(&crt, crt_file) == 0);
    mbedtls_debug_print_crt(&ssl, 0, file, line, prefix, &crt);

    TEST_ASSERT(strcmp(buffer.buf, result_str) == 0);

exit:
    mbedtls_x509_crt_free(&crt);
    mbedtls_ssl_free(&ssl);
    mbedtls_ssl_config_free(&conf);
    MD_OR_USE_PSA_DONE();
}
/* END_CASE */

/* BEGIN_CASE depends_on:MBEDTLS_SSL_TLS_C:MBEDTLS_BIGNUM_C */
void mbedtls_debug_print_mpi(char *value, char *file, int line,
                             char *prefix, char *result_str)
{
    mbedtls_ssl_context ssl;
    mbedtls_ssl_config conf;
    struct buffer_data buffer;
    mbedtls_mpi val;

    MD_PSA_INIT();

    mbedtls_ssl_init(&ssl);
    mbedtls_ssl_config_init(&conf);
    mbedtls_mpi_init(&val);
    memset(buffer.buf, 0, 2000);
    buffer.ptr = buffer.buf;

    TEST_EQUAL(mbedtls_ssl_config_defaults(&conf,
                                           MBEDTLS_SSL_IS_CLIENT,
                                           MBEDTLS_SSL_TRANSPORT_STREAM,
                                           MBEDTLS_SSL_PRESET_DEFAULT),
               0);
    mbedtls_ssl_conf_rng(&conf, mbedtls_test_random, NULL);
    mbedtls_ssl_conf_dbg(&conf, string_debug, &buffer);

    TEST_ASSERT(mbedtls_ssl_setup(&ssl, &conf) == 0);

    TEST_ASSERT(mbedtls_test_read_mpi(&val, value) == 0);

    mbedtls_debug_print_mpi(&ssl, 0, file, line, prefix, &val);

    TEST_ASSERT(strcmp(buffer.buf, result_str) == 0);

exit:
    mbedtls_mpi_free(&val);
    mbedtls_ssl_free(&ssl);
    mbedtls_ssl_config_free(&conf);
    MD_PSA_DONE();
}
/* END_CASE */