diff options
-rw-r--r-- | app/models/merge_request_diff.rb | 7 | ||||
-rw-r--r-- | changelogs/unreleased/sh-handle-null-bytes-in-merge-request-diffs.yml | 5 | ||||
-rw-r--r-- | spec/models/merge_request_diff_spec.rb | 21 | ||||
-rw-r--r-- | spec/support/helpers/repo_helpers.rb | 14 |
4 files changed, 46 insertions, 1 deletions
diff --git a/app/models/merge_request_diff.rb b/app/models/merge_request_diff.rb index 351a662ae83..6c1592604d3 100644 --- a/app/models/merge_request_diff.rb +++ b/app/models/merge_request_diff.rb @@ -298,6 +298,11 @@ class MergeRequestDiff < ActiveRecord::Base private + def encode_in_base64?(diff_text) + (diff_text.encoding == Encoding::BINARY && !diff_text.ascii_only?) || + diff_text.include?("\0") + end + def create_merge_request_diff_files(diffs) rows = if has_attribute?(:external_diff) && Gitlab.config.external_diffs.enabled @@ -350,7 +355,7 @@ class MergeRequestDiff < ActiveRecord::Base diff_hash.tap do |hash| diff_text = hash[:diff] - if diff_text.encoding == Encoding::BINARY && !diff_text.ascii_only? + if encode_in_base64?(diff_text) hash[:binary] = true hash[:diff] = [diff_text].pack('m0') end diff --git a/changelogs/unreleased/sh-handle-null-bytes-in-merge-request-diffs.yml b/changelogs/unreleased/sh-handle-null-bytes-in-merge-request-diffs.yml new file mode 100644 index 00000000000..01b6b08b61b --- /dev/null +++ b/changelogs/unreleased/sh-handle-null-bytes-in-merge-request-diffs.yml @@ -0,0 +1,5 @@ +--- +title: Fix error creating a merge request when diff includes a null byte +merge_request: 26190 +author: +type: fixed diff --git a/spec/models/merge_request_diff_spec.rb b/spec/models/merge_request_diff_spec.rb index e530e0302f5..53f5307ea0b 100644 --- a/spec/models/merge_request_diff_spec.rb +++ b/spec/models/merge_request_diff_spec.rb @@ -1,6 +1,8 @@ require 'spec_helper' describe MergeRequestDiff do + include RepoHelpers + let(:diff_with_commits) { create(:merge_request).merge_request_diff } describe 'validations' do @@ -194,6 +196,25 @@ describe MergeRequestDiff do expect(diff_file).to be_binary expect(diff_file.diff).to eq(mr_diff.compare.diffs(paths: [path]).to_a.first.diff) end + + context 'with diffs that contain a null byte' do + let(:filename) { 'test-null.txt' } + let(:content) { "a" * 10000 + "\x00" } + let(:project) { create(:project, :repository) } + let(:branch) { 'null-data' } + let(:target_branch) { 'master' } + + it 'saves diffs correctly' do + create_file_in_repo(project, target_branch, branch, filename, content) + + mr_diff = create(:merge_request, target_project: project, source_project: project, source_branch: branch, target_branch: target_branch).merge_request_diff + diff_file = mr_diff.merge_request_diff_files.find_by(new_path: filename) + + expect(diff_file).to be_binary + expect(diff_file.diff).to eq(mr_diff.compare.diffs(paths: [filename]).to_a.first.diff) + expect(diff_file.diff).to include(content) + end + end end end diff --git a/spec/support/helpers/repo_helpers.rb b/spec/support/helpers/repo_helpers.rb index 3c6956cf5e0..4af90f4af79 100644 --- a/spec/support/helpers/repo_helpers.rb +++ b/spec/support/helpers/repo_helpers.rb @@ -115,4 +115,18 @@ eos commits: commits ) end + + def create_file_in_repo( + project, start_branch, branch_name, filename, content, + commit_message: 'Add new content') + Files::CreateService.new( + project, + project.owner, + commit_message: commit_message, + start_branch: start_branch, + branch_name: branch_name, + file_path: filename, + file_content: content + ).execute + end end |