[CI] remove github pat usage (#25605)

Author: YanaXu

.azure-pipelines/code-gen.yml

@@ -21,7 +21,8 @@ jobs:
   pool: pool-windows-2019
   steps:
   - checkout: self
-  - template: util/get-github-pat-steps.yml
+    persistCredentials: true
+  - template: util/get-github-token-steps.yml
   - task: NodeTool@0
     displayName: Use Node 14.15.5
     inputs:

.azure-pipelines/util/analyze-steps.yml

@@ -5,7 +5,6 @@ parameters:
   IsGenerateBased: ''
 
 steps:
-- template: get-github-pat-steps.yml
 - template: download-build-steps.yml
   parameters:
     artifactName: build-${{ parameters.testFramework }}
@@ -50,7 +49,6 @@ steps:
     custom: msbuild
     arguments: 'build.proj /t:GenerateHelp /p:Configuration=${{ parameters.configuration }};PullRequestNumber=$(System.PullRequest.PullRequestNumber)'
   env:
-      OCTOKITPAT: $(GithubToken)
       PowerShellPlatform: ${{ parameters.powerShellPlatform }}
 
 - task: DotNetCoreCLI@2
@@ -60,7 +58,6 @@ steps:
     custom: msbuild
     arguments: 'build.proj /t:StaticAnalysis /p:Configuration=${{ parameters.configuration }};PullRequestNumber=$(System.PullRequest.PullRequestNumber)'
   env:
-      OCTOKITPAT: $(GithubToken)
       IsGenerateBased: ${{ parameters.IsGenerateBased }}
 
 - template: publish-artifacts-steps.yml

.azure-pipelines/util/build-steps.yml

@@ -4,7 +4,9 @@ parameters:
   powerShellPlatform: ''
 
 steps:
-- template: get-github-pat-steps.yml
+- checkout: self
+  persistCredentials: true
+- template: get-github-token-steps.yml
 - task: NodeTool@0
   condition: eq(variables.IsGenerateBased, true)
   displayName: Install Autorest

.azure-pipelines/util/get-github-token-steps.yml

@@ -0,0 +1,12 @@
+steps:
+- task: PowerShell@2
+  displayName: Get GitHub Token
+  inputs:
+    targetType: 'inline'
+    script: |
+      $httpConfigs = (git config --get-regexp "http" )
+      $authConfig = $httpConfigs | Where-Object {$_ -like "*AUTHORIZATION*"}
+      $token = ($authConfig -split ' ')[-1]
+      $ghToken = ([System.Text.Encoding]::ASCII.GetString([System.Convert]::FromBase64String($token)) -split ':')[1]
+      Write-Host "##vso[task.setvariable variable=GithubToken;issecret=true]$ghToken"
+

.azure-pipelines/util/test-steps.yml

@@ -6,7 +6,6 @@ parameters:
   powerShellPlatform: ''
 
 steps:
-- template: get-github-pat-steps.yml
 - template: download-build-steps.yml
   parameters:
     artifactName: build-${{ parameters.testFramework }}
@@ -31,7 +30,6 @@ steps:
     custom: msbuild
     arguments: 'build.proj /t:${{ parameters.testTarget }} /p:Configuration=${{ parameters.configuration }};TestFramework=${{ parameters.testFramework }};PullRequestNumber=$(System.PullRequest.PullRequestNumber)'
   env:
-    OCTOKITPAT: $(GithubToken)
     PowerShellPlatform: ${{ parameters.powerShellPlatform }}
   continueOnError: true