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Refactor submodule URL parsing (#7100)

Browse source 
Use combination of url.Parse and regex to parse refURL rather than by
hand with indexes & attempt to check if refURL is from same instance and
adjust output to match.

Also now return empty string instead of our original
guess at URL if we are unable to parse it.

Fixes #1526
This commit is contained in:
mrsdizzie 2019-06-03 11:11:20 -04:00 committed by Lunny Xiao
parent 45f588e85d
commit 2ac2a5b0ba
2 changed files with 75 additions and 28 deletions
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90
modules/git/submodule.go
View file

@ -1,10 +1,19 @@
// Copyright 2019 The Gitea Authors. All rights reserved.
// Copyright 2015 The Gogs Authors. All rights reserved.
// Use of this source code is governed by a MIT-style
// license that can be found in the LICENSE file.
package git
import "strings"
import (
"fmt"
"net"
"net/url"
"regexp"
"strings"
)
var scpSyntax = regexp.MustCompile(`^([a-zA-Z0-9_]+@)?([a-zA-Z0-9._-]+):(.*)$`)
// SubModule submodule is a reference on git repository
type SubModule struct {
@ -34,46 +43,73 @@ func getRefURL(refURL, urlPrefix, parentPath string) string {
return ""
}
url := strings.TrimSuffix(refURL, ".git")
refURI := strings.TrimSuffix(refURL, ".git")
// git://xxx/user/repo
if strings.HasPrefix(url, "git://") {
return "http://" + strings.TrimPrefix(url, "git://")
}
// http[s]://xxx/user/repo
if strings.HasPrefix(url, "http://") || strings.HasPrefix(url, "https://") {
return url
prefixURL, _ := url.Parse(urlPrefix)
urlPrefixHostname, _, err := net.SplitHostPort(prefixURL.Host)
if err != nil {
urlPrefixHostname = prefixURL.Host
}
// Relative url prefix check (according to git submodule documentation)
if strings.HasPrefix(url, "./") || strings.HasPrefix(url, "../") {
if strings.HasPrefix(refURI, "./") || strings.HasPrefix(refURI, "../") {
// ...construct and return correct submodule url here...
idx := strings.Index(parentPath, "/src/")
if idx == -1 {
return url
return refURI
}
return strings.TrimSuffix(urlPrefix, "/") + parentPath[:idx] + "/" + url
return strings.TrimSuffix(urlPrefix, "/") + parentPath[:idx] + "/" + refURI
}
// sysuser@xxx:user/repo
i := strings.Index(url, "@")
j := strings.LastIndex(url, ":")
if !strings.Contains(refURI, "://") {
// scp style syntax which contains *no* port number after the : (and is not parsed by net/url)
// ex: git@try.gitea.io:go-gitea/gitea
match := scpSyntax.FindAllStringSubmatch(refURI, -1)
if len(match) > 0 {
// Only process when i < j because git+ssh://git@git.forwardbias.in/npploader.git
if i > -1 && j > -1 && i < j {
// fix problem with reverse proxy works only with local server
if strings.Contains(urlPrefix, url[i+1:j]) {
return urlPrefix + url[j+1:]
m := match[0]
refHostname := m[2]
path := m[3]
if !strings.HasPrefix(path, "/") {
path = "/" + path
}
if urlPrefixHostname == refHostname {
return prefixURL.Scheme + "://" + urlPrefixHostname + path
}
return "http://" + refHostname + path
}
if strings.HasPrefix(url, "ssh://") || strings.HasPrefix(url, "git+ssh://") {
k := strings.Index(url[j+1:], "/")
return "http://" + url[i+1:j] + "/" + url[j+1:][k+1:]
}
return "http://" + url[i+1:j] + "/" + url[j+1:]
}
return url
ref, err := url.Parse(refURI)
if err != nil {
return ""
}
refHostname, _, err := net.SplitHostPort(ref.Host)
if err != nil {
refHostname = ref.Host
}
supportedSchemes := []string{"http", "https", "git", "ssh", "git+ssh"}
for _, scheme := range supportedSchemes {
if ref.Scheme == scheme {
if urlPrefixHostname == refHostname {
return prefixURL.Scheme + "://" + prefixURL.Host + ref.Path
} else if ref.Scheme == "http" || ref.Scheme == "https" {
if len(ref.User.Username()) > 0 {
return ref.Scheme + "://" + fmt.Sprintf("%v", ref.User) + "@" + ref.Host + ref.Path
}
return ref.Scheme + "://" + ref.Host + ref.Path
} else {
return "http://" + refHostname + ref.Path
}
}
}
return ""
}
// RefURL guesses and returns reference URL.

13
modules/git/submodule_test.go
View file

@ -19,8 +19,19 @@ func TestGetRefURL(t *testing.T) {
}{
{"git://github.com/user1/repo1", "/", "/", "http://github.com/user1/repo1"},
{"https://localhost/user1/repo1.git", "/", "/", "https://localhost/user1/repo1"},
{"git@github.com/user1/repo1.git", "/", "/", "git@github.com/user1/repo1"},
{"http://localhost/user1/repo1.git", "/", "/", "http://localhost/user1/repo1"},
{"git@github.com:user1/repo1.git", "/", "/", "http://github.com/user1/repo1"},
{"ssh://git@git.zefie.net:2222/zefie/lge_g6_kernel_scripts.git", "/", "/", "http://git.zefie.net/zefie/lge_g6_kernel_scripts"},
{"git@git.zefie.net:2222/zefie/lge_g6_kernel_scripts.git", "/", "/", "http://git.zefie.net/2222/zefie/lge_g6_kernel_scripts"},
{"git@try.gitea.io:go-gitea/gitea", "https://try.gitea.io/go-gitea/gitea", "/", "https://try.gitea.io/go-gitea/gitea"},
{"ssh://git@try.gitea.io:9999/go-gitea/gitea", "https://try.gitea.io/go-gitea/gitea", "/", "https://try.gitea.io/go-gitea/gitea"},
{"git://git@try.gitea.io:9999/go-gitea/gitea", "https://try.gitea.io/go-gitea/log", "/", "https://try.gitea.io/go-gitea/gitea"},
{"ssh://git@127.0.0.1:9999/go-gitea/gitea", "https://127.0.0.1:3000/go-gitea/log", "/", "https://127.0.0.1:3000/go-gitea/gitea"},
{"https://gitea.com:3000/user1/repo1.git", "https://127.0.0.1:3000/go-gitea/gitea", "/", "https://gitea.com:3000/user1/repo1"},
{"https://username:password@github.com/username/repository.git", "/", "/", "https://username:password@github.com/username/repository"},
{"somethingbad", "https://127.0.0.1:3000/go-gitea/gitea", "/", ""},
{"git@localhost:user/repo", "https://localhost/user/repo2", "/", "https://localhost/user/repo"},
{"../path/to/repo.git/", "https://localhost/user/repo2/src/branch/master/test", "/", "../path/to/repo.git/"},
}
for _, kase := range kases {