xref: /third_party/mbedtls/tests/suites/helpers.function

#line 2 "suites/helpers.function"
/*----------------------------------------------------------------------------*/
/* Headers */

#include <test/arguments.h>
#include <test/helpers.h>
#include <test/macros.h>
#include <test/random.h>
#include <test/bignum_helpers.h>
#include <test/psa_crypto_helpers.h>
#include <test/threading_helpers.h>

#include <errno.h>
#include <limits.h>
#include <stdint.h>
#include <stdlib.h>
#include <string.h>

#if defined(MBEDTLS_ERROR_C)
#include "mbedtls/error.h"
#endif
#include "mbedtls/platform.h"

#if defined(MBEDTLS_MEMORY_BUFFER_ALLOC_C)
#include "mbedtls/memory_buffer_alloc.h"
#endif

#if defined(__unix__) || (defined(__APPLE__) && defined(__MACH__))
#include <unistd.h>
#endif

/*----------------------------------------------------------------------------*/
/* Status and error constants */

#define DEPENDENCY_SUPPORTED            0   /* Dependency supported by build */
#define KEY_VALUE_MAPPING_FOUND         0   /* Integer expression found */
#define DISPATCH_TEST_SUCCESS           0   /* Test dispatch successful */

#define KEY_VALUE_MAPPING_NOT_FOUND     -1  /* Integer expression not found */
#define DEPENDENCY_NOT_SUPPORTED        -2  /* Dependency not supported */
#define DISPATCH_TEST_FN_NOT_FOUND      -3  /* Test function not found */
#define DISPATCH_INVALID_TEST_DATA      -4  /* Invalid test parameter type.
                                               Only int, string, binary data
                                               and integer expressions are
                                               allowed */
#define DISPATCH_UNSUPPORTED_SUITE      -5  /* Test suite not supported by the
                                               build */

/*----------------------------------------------------------------------------*/
/* Global variables */

/*----------------------------------------------------------------------------*/
/* Helper flags for complex dependencies */

/* Indicates whether we expect mbedtls_entropy_init
 * to initialize some strong entropy source. */
#if !defined(MBEDTLS_NO_DEFAULT_ENTROPY_SOURCES) && \
    (!defined(MBEDTLS_NO_PLATFORM_ENTROPY) ||      \
    defined(MBEDTLS_ENTROPY_HARDWARE_ALT) ||    \
    defined(ENTROPY_NV_SEED))
#define ENTROPY_HAVE_STRONG
#endif


/*----------------------------------------------------------------------------*/
/* Helper Functions */

#if defined(__unix__) || (defined(__APPLE__) && defined(__MACH__))
static int redirect_output(FILE *out_stream, const char *path)
{
    int out_fd, dup_fd;
    FILE *path_stream;

    out_fd = fileno(out_stream);
    dup_fd = dup(out_fd);

    if (dup_fd == -1) {
        return -1;
    }

    path_stream = fopen(path, "w");
    if (path_stream == NULL) {
        close(dup_fd);
        return -1;
    }

    fflush(out_stream);
    if (dup2(fileno(path_stream), out_fd) == -1) {
        close(dup_fd);
        fclose(path_stream);
        return -1;
    }

    fclose(path_stream);
    return dup_fd;
}

static int restore_output(FILE *out_stream, int dup_fd)
{
    int out_fd = fileno(out_stream);

    fflush(out_stream);
    if (dup2(dup_fd, out_fd) == -1) {
        close(out_fd);
        close(dup_fd);
        return -1;
    }

    close(dup_fd);
    return 0;
}
#endif /* __unix__ || __APPLE__ __MACH__ */