externalendpoints = externalendpoints.reduce((ary, id) => {
     const te = {
         feedName: tl.getEndpointUrl(id, false).replace(/\W/g, ""),
         feedUri: tl.getEndpointUrl(id, false),
     };
     ary.push(te);
     return ary;
 }, []);

 public createOptimizelyClientInstance(): OptimizelyXClient {
     let endpointId: string = this.taskInputs.getEndpointId();
     let endpointUrl: string = tl.getEndpointUrl(endpointId, false);
     let pat: string = tl.getEndpointAuthorizationParameter(endpointId, 'apitoken', false);
     let oxClient = new OptimizelyXClient(endpointUrl, pat);
     return oxClient;
 }

export async function getExternalAuthInfoArray(inputKey: string): Promise<AuthInfo[]>
{
    let externalAuthArray: AuthInfo[] = [];
    let endpointNames = tl.getDelimitedInput(inputKey, ",");

    if (!endpointNames || endpointNames.length === 0)
    {
        return externalAuthArray;
    }

    tl.debug(tl.loc("Info_AddingExternalFeeds", endpointNames.length));
    for (let endpointId of endpointNames)
    {
        let feedUri = tl.getEndpointUrl(endpointId, false);
        let endpointName = tl.getEndpointDataParameter(endpointId, "endpointname", false);
        let externalAuth = tl.getEndpointAuthorization(endpointId, true);
        let scheme = tl.getEndpointAuthorizationScheme(endpointId, true).toLowerCase();
        switch(scheme) {
            case "token":
                const token = externalAuth.parameters["apitoken"];
                tl.debug(tl.loc("Info_AddingTokenAuthEntry", feedUri));
                externalAuthArray.push(new AuthInfo({
                        feedName: endpointName,
                        feedUri,
                        isInternalSource: false,
                    } as IPackageSource,
                    AuthType.Token,
                    "build", // fake username, could be anything.
                    token,
                    ));
                break;
            case "usernamepassword":
                let username = externalAuth.parameters["username"];
                let password = externalAuth.parameters["password"];
                tl.debug(tl.loc("Info_AddingPasswordAuthEntry", feedUri));
                externalAuthArray.push(new AuthInfo({
                        feedName: endpointName,
                        feedUri,
                        isInternalSource: false,
                    } as IPackageSource,
                    AuthType.UsernamePassword,
                    username,
                    password));
                break;
            case "none":
            default:
                break;
        }
    }
    return externalAuthArray;
}

export async function getInternalAuthInfoArray(inputKey: string): Promise<AuthInfo[]> {
    let internalAuthArray: AuthInfo[] = [];
    const feedList  = tl.getDelimitedInput(inputKey, ",");
    if (!feedList || feedList.length === 0)
    {
        return internalAuthArray;
    }
    const serverType = tl.getVariable("System.ServerType");
    if (!serverType || serverType.toLowerCase() !== "hosted"){
        throw new Error(tl.loc("Error_PythonInternalFeedsNotSupportedOnprem"));
    }

    tl.debug(tl.loc("Info_AddingInternalFeeds", feedList.length));

    let packagingLocation: string;
    const serviceUri = tl.getEndpointUrl("SYSTEMVSSCONNECTION", false);
    const localAccessToken = pkgLocationUtils.getSystemAccessToken();
    try {
        // This call is to get the packaging URI(abc.pkgs.vs.com) which is same for all protocols.
        packagingLocation = await pkgLocationUtils.getNuGetUriFromBaseServiceUri(
            serviceUri,
            localAccessToken);
    } catch (error) {
        tl.debug(tl.loc("FailedToGetPackagingUri"));
        tl.debug(JSON.stringify(error));
        packagingLocation = serviceUri;
    }

    internalAuthArray = await Promise.all(feedList.map(async (feedName: string) => {
        const feedUri = await pkgLocationUtils.getFeedRegistryUrl(
            packagingLocation,
            pkgLocationUtils.RegistryType.PyPiUpload,
            feedName,
            null,
            localAccessToken,
            true /* useSession */);
        return new AuthInfo({
            feedName,
            feedUri,
            isInternalSource: true,
            } as IPackageSource,
            AuthType.Token,
            "build",
            localAccessToken,
        );
    }));

    return internalAuthArray;
}

function _logNugetStartupVariables(nuGetPath: string, nugetVersion: string) {
    try {
        const nugetfeedtype = tl.getInput("nugetfeedtype");
        let externalendpoint = null;
        if (nugetfeedtype != null && nugetfeedtype === "external") {
            const epId = tl.getInput("externalendpoint");
            if (epId) {
                externalendpoint = {
                    feedName: tl.getEndpointUrl(epId, false).replace(/\W/g, ""),
                    feedUri: tl.getEndpointUrl(epId, false),
                };
            }
        }

        let externalendpoints = tl.getDelimitedInput("externalendpoints", ",");
        if (externalendpoints) {
            externalendpoints = externalendpoints.reduce((ary, id) => {
                const te = {
                    feedName: tl.getEndpointUrl(id, false).replace(/\W/g, ""),
                    feedUri: tl.getEndpointUrl(id, false),
                };
                ary.push(te);
                return ary;
            }, []);
        }
        const nugetTelem = {
                "command": tl.getInput("command"),
                "NUGET_EXE_TOOL_PATH_ENV_VAR": tl.getVariable(nuGetGetter.NUGET_EXE_TOOL_PATH_ENV_VAR),
                "NUGET_EXE_CUSTOM_LOCATION": tl.getVariable(NUGET_EXE_CUSTOM_LOCATION),
                "searchPatternPack": tl.getPathInput("searchPatternPack"),
                "configurationToPack": tl.getInput("configurationToPack"),
                "versioningScheme": tl.getInput("versioningScheme"),
                "includeReferencedProjects": tl.getBoolInput("includeReferencedProjects"),
                "versionEnvVar": tl.getInput("versioningScheme") === "byEnvVar" ?
                    tl.getVariable(tl.getInput("versionEnvVar")) : null,
                "requestedMajorVersion": tl.getInput("requestedMajorVersion"),
                "requestedMinorVersion": tl.getInput("requestedMinorVersion"),
                "requestedPatchVersion": tl.getInput("requestedPatchVersion"),
                "packTimezone": tl.getInput("packTimezone"),
                "buildProperties": tl.getInput("buildProperties"),
                "basePath": tl.getInput("basePath"),
                "verbosityPack": tl.getInput("verbosityPack"),
                "includeSymbols": tl.getBoolInput("includeSymbols"),
                "NuGet.UseLegacyFindFiles": tl.getVariable("NuGet.UseLegacyFindFiles"),
                "NuGetTasks.IsHostedTestEnvironment": tl.getVariable("NuGetTasks.IsHostedTestEnvironment"),
                "System.TeamFoundationCollectionUri": tl.getVariable("System.TeamFoundationCollectionUri"),
                "NuGet.OverwritePackagingCollectionUrl": tl.getVariable("NuGet.OverwritePackagingCollectionUrl"),
                "externalendpoint": externalendpoint,
                "externalendpoints": externalendpoints,
                "allowpackageconflicts": tl.getInput("allowpackageconflicts"),
                "includenugetorg": tl.getInput("includenugetorg"),
                "nocache": tl.getInput("nocache"),
                "disableparallelprocessing": tl.getInput("disableParallelProcessing"),
                "nugetconfigpath": tl.getInput("nugetconfigpath"),
                "nugetfeedtype": nugetfeedtype,
                "searchpatternpush": tl.getInput("searchpatternpush"),
                "selectorconfig": tl.getInput("selectorconfig"),
                "solution": tl.getInput("solution"),
                "verbositypush": tl.getInput("verbositypush"),
                "verbosityrestore": tl.getInput("verbosityrestore"),
                "nuGetPath": nuGetPath,
                "nugetVersion": nugetVersion,
            };

        telemetry.emitTelemetry("Packaging", "NuGetCommand", nugetTelem);
    } catch (err) {
        tl.debug(`Unable to log NuGet task init telemetry. Err:( ${err} )`);
    }
}

    public static async FromServiceEndpoint(endpointId: string, authOnly?: boolean): Promise<NpmRegistry> {
        const lineEnd = os.EOL;
        let endpointAuth: tl.EndpointAuthorization;
        let url: string;
        let nerfed: string;
        let auth: string;
        let username: string;
        let password: string;
        let email: string;
        let password64: string;
        let isVstsTokenAuth: boolean = false;
        try {
            endpointAuth = tl.getEndpointAuthorization(endpointId, false);
        } catch (exception) {
            throw new Error(tl.loc('ServiceEndpointNotDefined'));
        }

        try {
            url = NormalizeRegistry(tl.getEndpointUrl(endpointId, false));

            // To the reader, this could be optimized here but it is broken out for readability
            if (endpointAuth.scheme === 'Token') {
                isVstsTokenAuth = await NpmRegistry.isEndpointInternal(url);
            }
            nerfed = util.toNerfDart(url);
        } catch (exception) {
            throw new Error(tl.loc('ServiceEndpointUrlNotDefined'));
        }

        switch (endpointAuth.scheme) {
            case 'UsernamePassword':
                username = endpointAuth.parameters['username'];
                password = endpointAuth.parameters['password'];
                email = username; // npm needs an email to be set in order to publish, this is ignored on npmjs
                password64 = (new Buffer(password).toString('base64'));
                tl.setSecret(password64);

                auth = nerfed + ':username=' + username + lineEnd;
                auth += nerfed + ':_password=' + password64 + lineEnd;
                auth += nerfed + ':email=' + email + lineEnd;
                break;
            case 'Token':
                const apitoken = endpointAuth.parameters['apitoken'];
                if (!isVstsTokenAuth){
                    // Use Bearer auth as it was intended.
                    auth = nerfed + ':_authToken=' + apitoken + lineEnd;
                } else {
                    // Azure DevOps does not support PATs+Bearer only JWTs+Bearer
                    email = 'VssEmail';
                    username = 'VssToken';
                    password64 = (new Buffer(apitoken).toString('base64'));
                    tl.setSecret(password64);

                    auth = nerfed + ':username=' + username + lineEnd;
                    auth += nerfed + ':_password=' + password64 + lineEnd;
                    auth += nerfed + ':email=' + email + lineEnd;
                }
                break;
        }

        auth += nerfed + ':always-auth=true';
        return new NpmRegistry(url, auth, authOnly);
    }

async function main(): Promise<void> {
    let packagingLocation: pkgLocationUtils.PackagingLocation;
    try {
        packagingLocation = await pkgLocationUtils.getPackagingUris(pkgLocationUtils.ProtocolType.NuGet);
    } catch (error) {
        tl.debug("Unable to get packaging URIs, using default collection URI");
        tl.debug(JSON.stringify(error));
        const collectionUrl = tl.getVariable("System.TeamFoundationCollectionUri");
        packagingLocation = {
            PackagingUris: [collectionUrl],
            DefaultPackagingUri: collectionUrl};
    }

    tl.setResourcePath(path.join(__dirname, "task.json"));

    let buildIdentityDisplayName: string = null;
    let buildIdentityAccount: string = null;
    
    let command: string = tl.getInput("command", true);
    let args: string = tl.getInput("arguments", false);

    // Getting NuGet
    tl.debug('Getting NuGet');
    let nuGetPath: string = undefined;
    try {
        nuGetPath = process.env[nuGetGetter.NUGET_EXE_TOOL_PATH_ENV_VAR];
        if (!nuGetPath){
            nuGetPath = await nuGetGetter.getNuGet("4.0.0");
        }
    }
    catch (error) {
        tl.setResult(tl.TaskResult.Failed, error.message);
        return;
    }

    const version = await peParser.getFileVersionInfoAsync(nuGetPath);
    if(version.productVersion.a < 3 || (version.productVersion.a <= 3 && version.productVersion.b < 5))
    {
        tl.setResult(tl.TaskResult.Failed, tl.loc("Info_NuGetSupportedAfter3_5", version.strings.ProductVersion));
        return;
    }

    try {
        nutil.setConsoleCodePage();

        let credProviderPath = nutil.locateCredentialProvider();

        // Clauses ordered in this way to avoid short-circuit evaluation, so the debug info printed by the functions
        // is unconditionally displayed
        const quirks = await ngToolRunner.getNuGetQuirksAsync(nuGetPath);
        const useCredProvider = ngToolRunner.isCredentialProviderEnabled(quirks) && credProviderPath;
        // useCredConfig not placed here: This task will only support NuGet versions >= 3.5.0 which support credProvider both hosted and OnPrem

        let accessToken = pkgLocationUtils.getSystemAccessToken();
        let serviceUri = tl.getEndpointUrl("SYSTEMVSSCONNECTION", false);
        let urlPrefixes = packagingLocation.PackagingUris;
        tl.debug(`Discovered URL prefixes: ${urlPrefixes}`);

        // Note to readers: This variable will be going away once we have a fix for the location service for
        // customers behind proxies
        let testPrefixes = tl.getVariable("NuGetTasks.ExtraUrlPrefixesForTesting");
        if (testPrefixes) {
            urlPrefixes = urlPrefixes.concat(testPrefixes.split(";"));
            tl.debug(`All URL prefixes: ${urlPrefixes}`);
        }

        const authInfo = new auth.NuGetAuthInfo(urlPrefixes, accessToken);
        let environmentSettings: ngToolRunner.NuGetEnvironmentSettings = {
            authInfo: authInfo,
            credProviderFolder: useCredProvider ? path.dirname(credProviderPath) : null,
            extensionsDisabled: true
        };

        let executionOptions = new NuGetExecutionOptions(
            nuGetPath,
            environmentSettings,
            command,
            args);
            
        await runNuGetAsync(executionOptions);
    } catch (err) {
        tl.error(err);

        if (buildIdentityDisplayName || buildIdentityAccount) {
            tl.warning(tl.loc("BuildIdentityPermissionsHint", buildIdentityDisplayName, buildIdentityAccount));
        }

        tl.setResult(tl.TaskResult.Failed, "");
    }
}

//.........这里部分代码省略.........
                versionToUse = "4.0.0";
            }
            else if (nugetUxOption === "3.5.0.1829") {
                nuGetPathSuffix = "NuGet/3.5.0/";
                versionToUse = "3.5.0";
            }
            else if (nugetUxOption === "3.3.0") {
                nuGetPathSuffix = "NuGet/3.3.0/";
                versionToUse = "3.3.0";
            }
            else {
                throw new Error(tl.loc("NGCommon_UnabletoDetectNuGetVersion"));
            }

            // save and reset the tool path env var, so this task doesn't act as a tool installer
            const tempNuGetPath = tl.getVariable(ngToolGetter.NUGET_EXE_TOOL_PATH_ENV_VAR);
            const cachedVersion = await ngToolGetter.cacheBundledNuGet(versionToUse, nuGetPathSuffix);
            nuGetPath = await ngToolGetter.getNuGet(cachedVersion);
            tl.setVariable(ngToolGetter.NUGET_EXE_TOOL_PATH_ENV_VAR, tempNuGetPath);
        }

        //find nuget location to use
        let credProviderPath = nutil.locateCredentialProvider();

        const quirks = await ngToolRunner.getNuGetQuirksAsync(nuGetPath);

        // clauses ordered in this way to avoid short-circuit evaluation, so the debug info printed by the functions
        // is unconditionally displayed
        const useCredProvider = ngToolRunner.isCredentialProviderEnabled(quirks) && credProviderPath;
        const useCredConfig = ngToolRunner.isCredentialConfigEnabled(quirks) && !useCredProvider;

        let accessToken = pkgLocationUtils.getSystemAccessToken();
        let urlPrefixes = packagingLocation.PackagingUris;
        tl.debug(`discovered URL prefixes: ${urlPrefixes}`);

        // Note to readers: This variable will be going away once we have a fix for the location service for
        // customers behind proxies
        let testPrefixes = tl.getVariable("NuGetTasks.ExtraUrlPrefixesForTesting");
        if (testPrefixes) {
            urlPrefixes = urlPrefixes.concat(testPrefixes.split(";"));
            tl.debug(`all URL prefixes: ${urlPrefixes}`);
        }

        const authInfo = new auth.NuGetAuthInfo(urlPrefixes, accessToken);
        let environmentSettings: ngToolRunner.NuGetEnvironmentSettings = {
            authInfo: authInfo,
            credProviderFolder: useCredProvider ? path.dirname(credProviderPath) : null,
            extensionsDisabled: !userNuGetProvided
        }

        let configFile = null;
        let apiKey: string;
        let feedUri: string;
        let credCleanup = () => { return };
        if (nuGetFeedType == "internal") {
            if (useCredConfig) {
                let nuGetConfigHelper = new NuGetConfigHelper(nuGetPath, null, authInfo, environmentSettings);
                nuGetConfigHelper.setSources([{ feedName: "internalFeed", feedUri: internalFeedUri }], true);
                configFile = nuGetConfigHelper.tempNugetConfigPath;
                credCleanup = () => tl.rmRF(nuGetConfigHelper.tempNugetConfigPath);
            }

            apiKey = "VSTS";
            feedUri = internalFeedUri;
        }
        else {
            feedUri = tl.getEndpointUrl(connectedServiceName, false);
            let externalAuth = tl.getEndpointAuthorization(connectedServiceName, false);
            apiKey = externalAuth.parameters["password"];
        }

        try {
            let publishOptions = new PublishOptions(
                nuGetPath,
                feedUri,
                apiKey,
                configFile,
                verbosity,
                nuGetAdditionalArgs,
                environmentSettings);

            for (const packageFile of filesList) {
                await publishPackageAsync(packageFile, publishOptions);
            }
        } finally {
            credCleanup();
        }

        tl.setResult(tl.TaskResult.Succeeded, tl.loc("PackagesPublishedSuccessfully"));

    } catch (err) {
        tl.error(err);

        if (buildIdentityDisplayName || buildIdentityAccount) {
            tl.warning(tl.loc("BuildIdentityPermissionsHint", buildIdentityDisplayName, buildIdentityAccount));
        }

        tl.setResult(tl.TaskResult.Failed, tl.loc("PackagesFailedToPublish"));
    }
}