mirror of
https://github.com/ossf/scorecard.git
synced 2024-09-20 13:37:13 +03:00
93 lines
2.4 KiB
Go
93 lines
2.4 KiB
Go
// Copyright 2020 Security Scorecard Authors
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package checks
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import (
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"archive/tar"
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"compress/gzip"
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"io"
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"net/http"
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"strings"
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"github.com/ossf/scorecard/checker"
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)
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// CheckIfFileExists downloads the tar of the repository and calls the onFile() to check
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// for the occurrence.
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func CheckIfFileExists(checkName string, c *checker.CheckRequest, onFile func(name string,
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Logf func(s string, f ...interface{})) (bool, error)) checker.CheckResult {
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r, _, err := c.Client.Repositories.Get(c.Ctx, c.Owner, c.Repo)
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if err != nil {
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return checker.MakeRetryResult(checkName, err)
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}
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url := r.GetArchiveURL()
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url = strings.Replace(url, "{archive_format}", "tarball/", 1)
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url = strings.Replace(url, "{/ref}", r.GetDefaultBranch(), 1)
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// Using the http.get instead of the lib httpClient because
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// the default checker.HTTPClient caches everything in the memory and it causes oom.
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//https://securego.io/docs/rules/g107.html
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//nolint
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resp, err := http.Get(url)
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if err != nil {
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return checker.MakeRetryResult(checkName, err)
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}
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defer resp.Body.Close()
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gz, err := gzip.NewReader(resp.Body)
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if err != nil {
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return checker.MakeRetryResult(checkName, err)
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}
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tr := tar.NewReader(gz)
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for {
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hdr, err := tr.Next()
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if err == io.EOF {
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break
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} else if err != nil {
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return checker.MakeRetryResult(checkName, err)
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}
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// Strip the repo name
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const splitLength = 2
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names := strings.SplitN(hdr.Name, "/", splitLength)
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if len(names) < splitLength {
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continue
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}
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name := names[1]
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rr, err := onFile(name, c.Logf)
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if err != nil {
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return checker.CheckResult{
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Name: checkName,
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Pass: false,
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Confidence: checker.MaxResultConfidence,
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Error: err,
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}
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}
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if rr {
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return checker.MakePassResult(checkName)
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}
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}
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const confidence = 5
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return checker.CheckResult{
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Name: checkName,
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Pass: false,
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Confidence: confidence,
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}
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}
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