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escape filename when assemble URL (#22850)
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Fixes: #22843 

### Cause:

https://github.com/go-gitea/gitea/blob/affdd40296960a08a4223330ccbd1fb88c96ea1a/services/repository/files/content.go#L161

Previously, we did not escape the **"%"** that might be in "treePath"
when call "url.parse()".


![image](https://user-images.githubusercontent.com/33891828/218066318-5a909e50-2a17-46e6-b32f-684b2aa4b91f.png)

This function will check whether "%" is the beginning of an escape
character. Obviously, the "%" in the example (hello%mother.txt) is not
that. So, the function will return a error.

### Solution:
We can escape "treePath" by call "url.PathEscape()" function firstly.

### Screenshot:

![image](https://user-images.githubusercontent.com/33891828/218069781-1a030f8b-18d0-4804-b0f8-73997849ef43.png)

---------

Signed-off-by: Andrew Thornton <art27@cantab.net>
Co-authored-by: Andrew Thornton <art27@cantab.net>
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sillyguodong and zeripath authored Feb 12, 2023
1 parent 8fa54d0 commit 51ab495
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Showing 2 changed files with 7 additions and 6 deletions.
4 changes: 2 additions & 2 deletions modules/lfs/endpoint.go
Original file line number Diff line number Diff line change
Expand Up @@ -4,14 +4,14 @@
package lfs

import (
"fmt"
"net/url"
"os"
"path"
"path/filepath"
"strings"

"code.gitea.io/gitea/modules/log"
"code.gitea.io/gitea/modules/util"
)

// DetermineEndpoint determines an endpoint from the clone url or uses the specified LFS url.
Expand Down Expand Up @@ -95,7 +95,7 @@ func endpointFromLocalPath(path string) *url.URL {
return nil
}

path = fmt.Sprintf("file://%s%s", slash, filepath.ToSlash(path))
path = "file://" + slash + util.PathEscapeSegments(filepath.ToSlash(path))

u, _ := url.Parse(path)

Expand Down
9 changes: 5 additions & 4 deletions services/repository/files/content.go
Original file line number Diff line number Diff line change
Expand Up @@ -15,6 +15,7 @@ import (
"code.gitea.io/gitea/modules/git"
"code.gitea.io/gitea/modules/setting"
api "code.gitea.io/gitea/modules/structs"
"code.gitea.io/gitea/modules/util"
)

// ContentType repo content type
Expand Down Expand Up @@ -158,7 +159,7 @@ func GetContents(ctx context.Context, repo *repo_model.Repository, treePath, ref
return nil, fmt.Errorf("no commit found for the ref [ref: %s]", ref)
}

selfURL, err := url.Parse(fmt.Sprintf("%s/contents/%s?ref=%s", repo.APIURL(), treePath, origRef))
selfURL, err := url.Parse(repo.APIURL() + "/contents/" + util.PathEscapeSegments(treePath) + "?ref=" + url.QueryEscape(origRef))
if err != nil {
return nil, err
}
Expand Down Expand Up @@ -217,23 +218,23 @@ func GetContents(ctx context.Context, repo *repo_model.Repository, treePath, ref
}
// Handle links
if entry.IsRegular() || entry.IsLink() {
downloadURL, err := url.Parse(fmt.Sprintf("%s/raw/%s/%s/%s", repo.HTMLURL(), refType, ref, treePath))
downloadURL, err := url.Parse(repo.HTMLURL() + "/raw/" + url.PathEscape(string(refType)) + "/" + util.PathEscapeSegments(ref) + "/" + util.PathEscapeSegments(treePath))
if err != nil {
return nil, err
}
downloadURLString := downloadURL.String()
contentsResponse.DownloadURL = &downloadURLString
}
if !entry.IsSubModule() {
htmlURL, err := url.Parse(fmt.Sprintf("%s/src/%s/%s/%s", repo.HTMLURL(), refType, ref, treePath))
htmlURL, err := url.Parse(repo.HTMLURL() + "/src/" + url.PathEscape(string(refType)) + "/" + util.PathEscapeSegments(ref) + "/" + util.PathEscapeSegments(treePath))
if err != nil {
return nil, err
}
htmlURLString := htmlURL.String()
contentsResponse.HTMLURL = &htmlURLString
contentsResponse.Links.HTMLURL = &htmlURLString

gitURL, err := url.Parse(fmt.Sprintf("%s/git/blobs/%s", repo.APIURL(), entry.ID.String()))
gitURL, err := url.Parse(repo.APIURL() + "/git/blobs/" + url.PathEscape(entry.ID.String()))
if err != nil {
return nil, err
}
Expand Down

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