static int nss_keylog_int(const char *prefix,
                          SSL *ssl,
                          const uint8_t *parameter_1,
                          size_t parameter_1_len,
                          const uint8_t *parameter_2,
                          size_t parameter_2_len)
{
    char *out = NULL;
    char *cursor = NULL;
    size_t out_len = 0;
    size_t i;
    size_t prefix_len;
    if (ssl->ctx->keylog_callback == NULL)
        return 1;
    prefix_len = strlen(prefix);
    out_len = prefix_len + (2 * parameter_1_len) + (2 * parameter_2_len) + 3;
    if ((out = cursor = OPENSSL_malloc(out_len)) == NULL) {
        SSLfatal(ssl, SSL_AD_INTERNAL_ERROR, SSL_F_NSS_KEYLOG_INT,
                 ERR_R_MALLOC_FAILURE);
        return 0;
    }
    strcpy(cursor, prefix);
    cursor += prefix_len;
    *cursor++ = ' ';
    for (i = 0; i < parameter_1_len; i++) {
        sprintf(cursor, "%02x", parameter_1[i]);
        cursor += 2;
    }
    *cursor++ = ' ';
    for (i = 0; i < parameter_2_len; i++) {
        sprintf(cursor, "%02x", parameter_2[i]);
        cursor += 2;
    }
    *cursor = '\0';
    ssl->ctx->keylog_callback(ssl, (const char *)out);
    OPENSSL_clear_free(out, out_len);
    return 1;
}
['static int nss_keylog_int(const char *prefix,\n                          SSL *ssl,\n                          const uint8_t *parameter_1,\n                          size_t parameter_1_len,\n                          const uint8_t *parameter_2,\n                          size_t parameter_2_len)\n{\n    char *out = NULL;\n    char *cursor = NULL;\n    size_t out_len = 0;\n    size_t i;\n    size_t prefix_len;\n    if (ssl->ctx->keylog_callback == NULL)\n        return 1;\n    prefix_len = strlen(prefix);\n    out_len = prefix_len + (2 * parameter_1_len) + (2 * parameter_2_len) + 3;\n    if ((out = cursor = OPENSSL_malloc(out_len)) == NULL) {\n        SSLfatal(ssl, SSL_AD_INTERNAL_ERROR, SSL_F_NSS_KEYLOG_INT,\n                 ERR_R_MALLOC_FAILURE);\n        return 0;\n    }\n    strcpy(cursor, prefix);\n    cursor += prefix_len;\n    *cursor++ = \' \';\n    for (i = 0; i < parameter_1_len; i++) {\n        sprintf(cursor, "%02x", parameter_1[i]);\n        cursor += 2;\n    }\n    *cursor++ = \' \';\n    for (i = 0; i < parameter_2_len; i++) {\n        sprintf(cursor, "%02x", parameter_2[i]);\n        cursor += 2;\n    }\n    *cursor = \'\\0\';\n    ssl->ctx->keylog_callback(ssl, (const char *)out);\n    OPENSSL_clear_free(out, out_len);\n    return 1;\n}']