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@@ -46,6 +46,8 @@ node_modules/ | |
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.gradle/ | ||
build/ | ||
out/ | ||
*.class | ||
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# Eclipse IDE files | ||
**/.project | ||
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184 changes: 184 additions & 0 deletions
184
core/src/main/java/org/testcontainers/utility/RegistryAuthLocator.java
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package org.testcontainers.utility; | ||
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import com.fasterxml.jackson.databind.JsonNode; | ||
import com.fasterxml.jackson.databind.ObjectMapper; | ||
import com.github.dockerjava.api.model.AuthConfig; | ||
import com.google.common.annotations.VisibleForTesting; | ||
import org.apache.commons.lang.SystemUtils; | ||
import org.slf4j.Logger; | ||
import org.zeroturnaround.exec.ProcessExecutor; | ||
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import java.io.ByteArrayInputStream; | ||
import java.io.File; | ||
import java.util.Iterator; | ||
import java.util.Map; | ||
import java.util.concurrent.TimeUnit; | ||
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import static org.slf4j.LoggerFactory.getLogger; | ||
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/** | ||
* Utility to look up registry authentication information for an image. | ||
*/ | ||
public class RegistryAuthLocator { | ||
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private static final Logger log = getLogger(RegistryAuthLocator.class); | ||
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private final AuthConfig defaultAuthConfig; | ||
private final File configFile; | ||
private final String commandPathPrefix; | ||
private static final ObjectMapper OBJECT_MAPPER = new ObjectMapper(); | ||
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@VisibleForTesting | ||
RegistryAuthLocator(AuthConfig defaultAuthConfig, File configFile, String commandPathPrefix) { | ||
this.defaultAuthConfig = defaultAuthConfig; | ||
this.configFile = configFile; | ||
this.commandPathPrefix = commandPathPrefix; | ||
} | ||
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/** | ||
* @param defaultAuthConfig an AuthConfig object that should be returned if there is no overriding authentication | ||
* available for images that are looked up | ||
*/ | ||
public RegistryAuthLocator(AuthConfig defaultAuthConfig) { | ||
this.defaultAuthConfig = defaultAuthConfig; | ||
final String dockerConfigLocation = System.getenv().getOrDefault("DOCKER_CONFIG", | ||
System.getProperty("user.home") + "/.docker"); | ||
this.configFile = new File(dockerConfigLocation + "/config.json"); | ||
this.commandPathPrefix = ""; | ||
} | ||
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/** | ||
* Looks up an AuthConfig for a given image name. | ||
* <p> | ||
* Lookup is performed in following order: | ||
* <ol> | ||
* <li>{@code auths} is checked for existing credentials for the specified registry.</li> | ||
* <li>if no existing auth is found, {@code credHelpers} are checked for helper for the specified registry.</li> | ||
* <li>if no suitable {@code credHelpers} found, {@code credsStore} is used.</li> | ||
* <li>if no {@code credsStore} is found then the default configuration is returned.</li> | ||
* </ol> | ||
* | ||
* @param dockerImageName image name to be looked up (potentially including a registry URL part) | ||
* @return an AuthConfig that is applicable to this specific image OR the defaultAuthConfig that has been set for | ||
* this {@link RegistryAuthLocator}. | ||
*/ | ||
public AuthConfig lookupAuthConfig(DockerImageName dockerImageName) { | ||
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if (SystemUtils.IS_OS_WINDOWS) { | ||
log.debug("RegistryAuthLocator is not supported on Windows. Please help test or improve it and update " + | ||
"https://github.com/testcontainers/testcontainers-java/issues/756"); | ||
return defaultAuthConfig; | ||
} | ||
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log.debug("Looking up auth config for image: {}", dockerImageName); | ||
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log.debug("RegistryAuthLocator has configFile: {} ({}) and commandPathPrefix: {}", | ||
configFile, | ||
configFile.exists() ? "exists" : "does not exist", | ||
commandPathPrefix); | ||
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try { | ||
final JsonNode config = OBJECT_MAPPER.readTree(configFile); | ||
final String reposName = dockerImageName.getRegistry(); | ||
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final AuthConfig existingAuthConfig = findExistingAuthConfig(config, reposName); | ||
if (existingAuthConfig != null) { | ||
return existingAuthConfig; | ||
} | ||
// auths is empty, using helper: | ||
final AuthConfig helperAuthConfig = authConfigUsingHelper(config, reposName); | ||
if (helperAuthConfig != null) { | ||
return helperAuthConfig; | ||
} | ||
// no credsHelper to use, using credsStore: | ||
final AuthConfig storeAuthConfig = authConfigUsingStore(config, reposName); | ||
if (storeAuthConfig != null) { | ||
return storeAuthConfig; | ||
} | ||
// otherwise, defaultAuthConfig should already contain any credentials available | ||
} catch (Exception e) { | ||
log.error("Failure when attempting to lookup auth config (dockerImageName: {}, configFile: {}. " + | ||
"Falling back to docker-java default behaviour", | ||
dockerImageName, | ||
configFile, | ||
e); | ||
} | ||
return defaultAuthConfig; | ||
} | ||
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private AuthConfig findExistingAuthConfig(final JsonNode config, final String reposName) throws Exception { | ||
final Map.Entry<String, JsonNode> entry = findAuthNode(config, reposName); | ||
if (entry != null && entry.getValue() != null && entry.getValue().size() > 0) { | ||
return OBJECT_MAPPER | ||
.treeToValue(entry.getValue(), AuthConfig.class) | ||
.withRegistryAddress(entry.getKey()); | ||
} | ||
return null; | ||
} | ||
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private AuthConfig authConfigUsingHelper(final JsonNode config, final String reposName) throws Exception { | ||
final JsonNode credHelpers = config.get("credHelpers"); | ||
if (credHelpers != null && credHelpers.size() > 0) { | ||
final JsonNode helperNode = credHelpers.get(reposName); | ||
if (helperNode != null && helperNode.isTextual()) { | ||
final String helper = helperNode.asText(); | ||
return runCredentialProvider(reposName, helper); | ||
} | ||
} | ||
return null; | ||
} | ||
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private AuthConfig authConfigUsingStore(final JsonNode config, final String reposName) throws Exception { | ||
final JsonNode credsStoreNode = config.get("credsStore"); | ||
if (credsStoreNode != null && !credsStoreNode.isMissingNode() && credsStoreNode.isTextual()) { | ||
final String credsStore = credsStoreNode.asText(); | ||
return runCredentialProvider(reposName, credsStore); | ||
} | ||
return null; | ||
} | ||
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private Map.Entry<String, JsonNode> findAuthNode(final JsonNode config, final String reposName) throws Exception { | ||
final JsonNode auths = config.get("auths"); | ||
if (auths != null && auths.size() > 0) { | ||
final Iterator<Map.Entry<String, JsonNode>> fields = auths.fields(); | ||
while (fields.hasNext()) { | ||
final Map.Entry<String, JsonNode> entry = fields.next(); | ||
if (entry.getKey().endsWith("://" + reposName)) { | ||
return entry; | ||
} | ||
} | ||
} | ||
return null; | ||
} | ||
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private AuthConfig runCredentialProvider(String hostName, String credHelper) throws Exception { | ||
final String credentialHelperName = commandPathPrefix + "docker-credential-" + credHelper; | ||
String data; | ||
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log.debug("Executing docker credential helper: {} to locate auth config for: {}", | ||
credentialHelperName, hostName); | ||
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try { | ||
data = new ProcessExecutor() | ||
.command(credentialHelperName, "get") | ||
.redirectInput(new ByteArrayInputStream(hostName.getBytes())) | ||
.readOutput(true) | ||
.exitValueNormal() | ||
.timeout(30, TimeUnit.SECONDS) | ||
.execute() | ||
.outputUTF8() | ||
.trim(); | ||
} catch (Exception e) { | ||
log.error("Failure running docker credential helper ({})", credentialHelperName); | ||
throw e; | ||
} | ||
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final JsonNode helperResponse = OBJECT_MAPPER.readTree(data); | ||
log.debug("Credential helper provided auth config for: {}", hostName); | ||
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return new AuthConfig() | ||
.withRegistryAddress(helperResponse.at("/ServerURL").asText()) | ||
.withUsername(helperResponse.at("/Username").asText()) | ||
.withPassword(helperResponse.at("/Secret").asText()); | ||
} | ||
} |
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