static enum aws_libcrypto_version s_resolve_libcrypto()

in source/unix/openssl_platform_init.c [480:509]

• 26 lines of code
• 6 McCabe index (conditional complexity)

static enum aws_libcrypto_version s_resolve_libcrypto(void) {
    if (s_libcrypto_version != AWS_LIBCRYPTO_NONE) {
        return s_libcrypto_version;
    }

    /* Try to auto-resolve against what's linked in/process space */
    AWS_LOGF_DEBUG(AWS_LS_CAL_LIBCRYPTO_RESOLVE, "searching process and loaded modules");
    void *process = dlopen(NULL, RTLD_NOW);
    AWS_FATAL_ASSERT(process && "Unable to load symbols from process space");
    enum aws_libcrypto_version result = s_resolve_libcrypto_symbols(AWS_LIBCRYPTO_LC, process);
    if (result == AWS_LIBCRYPTO_NONE) {
        AWS_LOGF_DEBUG(AWS_LS_CAL_LIBCRYPTO_RESOLVE, "did not find aws-lc symbols linked");
        result = s_resolve_libcrypto_symbols(AWS_LIBCRYPTO_1_0_2, process);
    }
    if (result == AWS_LIBCRYPTO_NONE) {
        AWS_LOGF_DEBUG(AWS_LS_CAL_LIBCRYPTO_RESOLVE, "did not find libcrypto 1.0.2 symbols linked");
        result = s_resolve_libcrypto_symbols(AWS_LIBCRYPTO_1_1_1, process);
    }
    dlclose(process);

    if (result == AWS_LIBCRYPTO_NONE) {
        AWS_LOGF_DEBUG(AWS_LS_CAL_LIBCRYPTO_RESOLVE, "did not find libcrypto 1.1.1 symbols linked");
        AWS_LOGF_DEBUG(
            AWS_LS_CAL_LIBCRYPTO_RESOLVE,
            "libcrypto symbols were not statically linked, searching for shared libraries");
        result = s_resolve_libcrypto_lib();
    }

    return result;
}