Merge branch 'sh-handle-null-bytes-in-merge-request-diffs' into 'master'
Fix error creating a merge request when diff includes a null byte Closes #57710 See merge request gitlab-org/gitlab-ce!26190
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@ -296,6 +296,11 @@ class MergeRequestDiff < ActiveRecord::Base
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private
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def encode_in_base64?(diff_text)
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(diff_text.encoding == Encoding::BINARY && !diff_text.ascii_only?) ||
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diff_text.include?("\0")
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end
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def create_merge_request_diff_files(diffs)
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rows =
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if has_attribute?(:external_diff) && Gitlab.config.external_diffs.enabled
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@ -348,7 +353,7 @@ class MergeRequestDiff < ActiveRecord::Base
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diff_hash.tap do |hash|
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diff_text = hash[:diff]
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if diff_text.encoding == Encoding::BINARY && !diff_text.ascii_only?
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if encode_in_base64?(diff_text)
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hash[:binary] = true
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hash[:diff] = [diff_text].pack('m0')
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end
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@ -0,0 +1,5 @@
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---
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title: Fix error creating a merge request when diff includes a null byte
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merge_request: 26190
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author:
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type: fixed
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@ -1,6 +1,8 @@
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require 'spec_helper'
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describe MergeRequestDiff do
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include RepoHelpers
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let(:diff_with_commits) { create(:merge_request).merge_request_diff }
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describe 'validations' do
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@ -194,6 +196,25 @@ describe MergeRequestDiff do
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expect(diff_file).to be_binary
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expect(diff_file.diff).to eq(mr_diff.compare.diffs(paths: [path]).to_a.first.diff)
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end
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context 'with diffs that contain a null byte' do
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let(:filename) { 'test-null.txt' }
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let(:content) { "a" * 10000 + "\x00" }
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let(:project) { create(:project, :repository) }
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let(:branch) { 'null-data' }
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let(:target_branch) { 'master' }
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it 'saves diffs correctly' do
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create_file_in_repo(project, target_branch, branch, filename, content)
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mr_diff = create(:merge_request, target_project: project, source_project: project, source_branch: branch, target_branch: target_branch).merge_request_diff
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diff_file = mr_diff.merge_request_diff_files.find_by(new_path: filename)
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expect(diff_file).to be_binary
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expect(diff_file.diff).to eq(mr_diff.compare.diffs(paths: [filename]).to_a.first.diff)
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expect(diff_file.diff).to include(content)
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end
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end
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end
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end
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@ -115,4 +115,18 @@ eos
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commits: commits
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)
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end
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def create_file_in_repo(
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project, start_branch, branch_name, filename, content,
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commit_message: 'Add new content')
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Files::CreateService.new(
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project,
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project.owner,
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commit_message: commit_message,
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start_branch: start_branch,
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branch_name: branch_name,
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file_path: filename,
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file_content: content
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).execute
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end
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end
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