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Place untrusted data from the git commit metadata in environment variables.

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This prevents bash from executing strings in the commit metadata as code when reporting build errors.

PiperOrigin-RevId: 580155315
Change-Id: I4046eabd76eba14297fffe4e2fced59259d80f21
This commit is contained in:
Saran Tunyasuvunakool
2023-11-07 06:13:13 -08:00
committed by Copybara-Service
parent 1881c2d881
commit 7207b60b5a
1 changed files with 29 additions and 17 deletions
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.github/workflows/build.yml
+29 -17
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@@ -252,20 +252,32 @@ jobs:
- name: Notify team chat
shell: bash
env:
GCHAT_API: ${{ secrets.GCHAT_API }}
JOB_URL: "${{ github.server_url }}/${{ github.repository }}/actions/runs/\
${{ github.run_id }}"
if: ${{ failure() && github.event_name == 'push' && env.GCHAT_API != '' }}
run: >
curl
"$GCHAT_API&threadKey=$GITHUB_SHA&messageReplyOption=REPLY_MESSAGE_FALLBACK_TO_NEW_THREAD"
-X POST
-H "Content-Type: application/json"
-d "{
'text': '<$JOB_URL|*FAILURE*>:
job \`${{ matrix.os }}${{ matrix.additional_label }}\`
commit \`$(echo $GITHUB_SHA | head -c6)\`\n
\`\`\`Author: ${{ github.event.head_commit.author.name }}
<${{ github.event.head_commit.author.email }}>
\n\n${{ github.event.head_commit.message }}\`\`\`
'}"
GCHAT_API_URL: ${{ secrets.GCHAT_API }}
JOB_URL: "${{ github.server_url }}/${{ github.repository }}/actions/runs/${{ github.run_id }}"
CHATMSG_AUTHOR_NAME: ${{ github.event.head_commit.author.name }}
CHATMSG_AUTHOR_EMAIL: ${{ github.event.head_commit.author.email }}
CHATMSG_COMMIT_MESSAGE: ${{ github.event.head_commit.message }}
CHATMSG_JOB_ID: ${{ matrix.os }}${{ matrix.additional_label }}
if: ${{ failure() && github.event_name == 'push' && env.GCHAT_API_URL != '' }}
run: |
CHATMSG="$(cat <<-'EOF' | python3
import json
import os
env = lambda x: os.getenv(x, '')
data = dict(
result=env('JOB_URL'),
job=env('CHATMSG_JOB_ID'),
commit=env('GITHUB_SHA')[:6],
name=env('CHATMSG_AUTHOR_NAME').replace('```', ''),
email=env('CHATMSG_AUTHOR_EMAIL'),
msg=env('CHATMSG_COMMIT_MESSAGE').replace('```', '')
)
text = '<{result}|*FAILURE*>: job `{job}` commit `{commit}`\n```Author: {name}<{email}>\n\n{msg}```'.format(**data)
print(json.dumps({'text' : text}))
EOF
)" &&
curl "$GCHAT_API_URL&threadKey=$GITHUB_SHA&messageReplyOption=REPLY_MESSAGE_FALLBACK_TO_NEW_THREAD" \
-X POST \
-H "Content-Type: application/json" \
--data-raw "${CHATMSG}"