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| 1 | +package io.swagger; |
| 2 | + |
| 3 | +import com.fasterxml.jackson.databind.JsonNode; |
| 4 | +import io.swagger.v3.core.util.Json; |
| 5 | +import io.swagger.v3.core.util.Yaml; |
| 6 | +import org.apache.commons.lang3.StringUtils; |
| 7 | +import org.apache.http.HttpEntity; |
| 8 | +import org.apache.http.StatusLine; |
| 9 | +import org.apache.http.client.config.RequestConfig; |
| 10 | +import org.apache.http.client.methods.CloseableHttpResponse; |
| 11 | +import org.apache.http.client.methods.HttpGet; |
| 12 | +import org.apache.http.conn.ssl.NoopHostnameVerifier; |
| 13 | +import org.apache.http.conn.ssl.SSLConnectionSocketFactory; |
| 14 | +import org.apache.http.impl.client.CloseableHttpClient; |
| 15 | +import org.apache.http.impl.client.HttpClientBuilder; |
| 16 | +import org.apache.http.impl.client.HttpClients; |
| 17 | +import org.apache.http.ssl.SSLContextBuilder; |
| 18 | +import org.apache.http.ssl.TrustStrategy; |
| 19 | +import org.apache.http.util.EntityUtils; |
| 20 | +import org.slf4j.Logger; |
| 21 | +import org.slf4j.LoggerFactory; |
| 22 | + |
| 23 | +import java.io.BufferedReader; |
| 24 | +import java.io.IOException; |
| 25 | +import java.io.InputStream; |
| 26 | +import java.io.InputStreamReader; |
| 27 | +import java.net.InetAddress; |
| 28 | +import java.net.URL; |
| 29 | +import java.security.KeyManagementException; |
| 30 | +import java.security.KeyStoreException; |
| 31 | +import java.security.NoSuchAlgorithmException; |
| 32 | +import java.security.cert.CertificateException; |
| 33 | +import java.security.cert.X509Certificate; |
| 34 | +import java.util.stream.Collectors; |
| 35 | + |
| 36 | +public class Utils { |
| 37 | + |
| 38 | + public static enum VERSION { |
| 39 | + V1, |
| 40 | + V20, |
| 41 | + V30, |
| 42 | + V31, |
| 43 | + NONE |
| 44 | + } |
| 45 | + |
| 46 | + static Logger LOGGER = LoggerFactory.getLogger(Utils.class); |
| 47 | + public static String getVersionString(JsonNode node) { |
| 48 | + if (node == null) { |
| 49 | + return null; |
| 50 | + } |
| 51 | + |
| 52 | + JsonNode version = node.get("openapi"); |
| 53 | + if (version != null) { |
| 54 | + return version.toString(); |
| 55 | + } |
| 56 | + |
| 57 | + version = node.get("swagger"); |
| 58 | + if (version != null) { |
| 59 | + return version.toString(); |
| 60 | + } |
| 61 | + version = node.get("swaggerVersion"); |
| 62 | + if (version != null) { |
| 63 | + return version.toString(); |
| 64 | + } |
| 65 | + |
| 66 | + LOGGER.debug("version not found!"); |
| 67 | + return null; |
| 68 | + } |
| 69 | + |
| 70 | + public static VERSION getVersion(JsonNode node) { |
| 71 | + String version = getVersionString(node); |
| 72 | + if (StringUtils.isBlank(version)) { |
| 73 | + return VERSION.NONE; |
| 74 | + } |
| 75 | + if (version.startsWith("\"1") || version.startsWith("1")) { |
| 76 | + return VERSION.V1; |
| 77 | + } |
| 78 | + if (version.startsWith("\"2") || version.startsWith("2")) { |
| 79 | + return VERSION.V20; |
| 80 | + } |
| 81 | + if (version.startsWith("\"3.0") || version.startsWith("3.0")) { |
| 82 | + return VERSION.V30; |
| 83 | + } |
| 84 | + if (version.startsWith("\"3.1") || version.startsWith("3.1")) { |
| 85 | + return VERSION.V31; |
| 86 | + } |
| 87 | + return VERSION.NONE; |
| 88 | + |
| 89 | + } |
| 90 | + |
| 91 | + |
| 92 | + public static JsonNode readNode(String text) { |
| 93 | + try { |
| 94 | + if (text.trim().startsWith("{")) { |
| 95 | + return Json.mapper().readTree(text); |
| 96 | + } else { |
| 97 | + return Yaml.mapper().readTree(text); |
| 98 | + } |
| 99 | + } catch (IOException e) { |
| 100 | + return null; |
| 101 | + } |
| 102 | + } |
| 103 | + |
| 104 | + public static CloseableHttpClient getCarelessHttpClient(boolean disableRedirect) { |
| 105 | + CloseableHttpClient httpClient = null; |
| 106 | + |
| 107 | + try { |
| 108 | + SSLContextBuilder builder = new SSLContextBuilder(); |
| 109 | + builder.loadTrustMaterial(null, new TrustStrategy() { |
| 110 | + public boolean isTrusted(X509Certificate[] chain, String authType) throws CertificateException { |
| 111 | + return true; |
| 112 | + } |
| 113 | + }); |
| 114 | + SSLConnectionSocketFactory sslsf = new SSLConnectionSocketFactory(builder.build(), NoopHostnameVerifier.INSTANCE); |
| 115 | + HttpClientBuilder httpClientBuilder = HttpClients |
| 116 | + .custom() |
| 117 | + .setSSLSocketFactory(sslsf); |
| 118 | + if (disableRedirect) { |
| 119 | + httpClientBuilder.disableRedirectHandling(); |
| 120 | + } |
| 121 | + httpClientBuilder.setUserAgent("swagger-validator"); |
| 122 | + httpClient = httpClientBuilder.build(); |
| 123 | + } catch (NoSuchAlgorithmException | KeyStoreException | KeyManagementException e) { |
| 124 | + LOGGER.error("can't disable SSL verification", e); |
| 125 | + } |
| 126 | + |
| 127 | + return httpClient; |
| 128 | + } |
| 129 | + |
| 130 | + |
| 131 | + public static String getUrlContents(String urlString) throws IOException { |
| 132 | + return getUrlContents(urlString, false, false); |
| 133 | + } |
| 134 | + public static String getUrlContents(String urlString, boolean rejectLocal, boolean rejectRedirect) throws IOException { |
| 135 | + LOGGER.trace("fetching URL contents"); |
| 136 | + URL url = new URL(urlString); |
| 137 | + if(rejectLocal) { |
| 138 | + InetAddress inetAddress = InetAddress.getByName(url.getHost()); |
| 139 | + if(inetAddress.isAnyLocalAddress() || inetAddress.isLoopbackAddress() || inetAddress.isLinkLocalAddress()) { |
| 140 | + throw new IOException("Only accepts http/https protocol"); |
| 141 | + } |
| 142 | + } |
| 143 | + final CloseableHttpClient httpClient = getCarelessHttpClient(rejectRedirect); |
| 144 | + |
| 145 | + RequestConfig.Builder requestBuilder = RequestConfig.custom(); |
| 146 | + requestBuilder = requestBuilder |
| 147 | + .setConnectTimeout(5000) |
| 148 | + .setSocketTimeout(5000); |
| 149 | + |
| 150 | + HttpGet getMethod = new HttpGet(urlString); |
| 151 | + getMethod.setConfig(requestBuilder.build()); |
| 152 | + getMethod.setHeader("Accept", "application/json, */*"); |
| 153 | + |
| 154 | + |
| 155 | + if (httpClient != null) { |
| 156 | + final CloseableHttpResponse response = httpClient.execute(getMethod); |
| 157 | + |
| 158 | + try { |
| 159 | + |
| 160 | + HttpEntity entity = response.getEntity(); |
| 161 | + StatusLine line = response.getStatusLine(); |
| 162 | + if(line.getStatusCode() > 299 || line.getStatusCode() < 200) { |
| 163 | + throw new IOException("failed to read swagger with code " + line.getStatusCode()); |
| 164 | + } |
| 165 | + return EntityUtils.toString(entity, "UTF-8"); |
| 166 | + } finally { |
| 167 | + response.close(); |
| 168 | + httpClient.close(); |
| 169 | + } |
| 170 | + } else { |
| 171 | + throw new IOException("CloseableHttpClient could not be initialized"); |
| 172 | + } |
| 173 | + } |
| 174 | + |
| 175 | + public static String getResourceFileAsString(String fileName) { |
| 176 | + InputStream is = Utils.class.getClassLoader().getResourceAsStream(fileName); |
| 177 | + if (is != null) { |
| 178 | + BufferedReader reader = new BufferedReader(new InputStreamReader(is)); |
| 179 | + return reader.lines().collect(Collectors.joining(System.lineSeparator())); |
| 180 | + } |
| 181 | + return null; |
| 182 | + } |
| 183 | +} |
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