Merge pull request 'hooks: Harden when we accept push options that change repo settings' (#3319) from earl-warren/forgejo:wip-v1.20-push-options into v1.20/forgejo

Reviewed-on: https://codeberg.org/forgejo/forgejo/pulls/3319

.forgejo/workflows/build-release.yml

@@ -45,7 +45,7 @@ jobs:
 
       - uses: https://code.forgejo.org/actions/setup-go@v4
         with:
-          go-version: ">=1.20"
+          go-version: ">=1.21"
           check-latest: true
 
       - name: Create the version from ref_name

.forgejo/workflows/testing.yml

@@ -16,7 +16,7 @@ jobs:
       - uses: https://code.forgejo.org/actions/checkout@v3
       - uses: https://code.forgejo.org/actions/setup-go@v4
         with:
-          go-version: "1.20"
+          go-version: "1.21"
           check-latest: true
       - run: make deps-backend deps-tools
       - run: make lint-backend
@@ -30,7 +30,7 @@ jobs:
       - uses: https://code.forgejo.org/actions/checkout@v3
       - uses: https://code.forgejo.org/actions/setup-go@v4
         with:
-          go-version: "1.20"
+          go-version: "1.21"
           check-latest: true
       - run: make deps-backend deps-tools
       - run: make --always-make checks-backend # ensure the "go-licenses" make target runs
@@ -43,7 +43,7 @@ jobs:
       - uses: https://code.forgejo.org/actions/checkout@v3
       - uses: https://code.forgejo.org/actions/setup-go@v4
         with:
-          go-version: "1.20"
+          go-version: "1.21"
       - run: |
           git config --add safe.directory '*'
           adduser --quiet --comment forgejo --disabled-password forgejo
@@ -81,7 +81,7 @@ jobs:
       - uses: https://code.forgejo.org/actions/checkout@v3
       - uses: https://code.forgejo.org/actions/setup-go@v4
         with:
-          go-version: "1.20"
+          go-version: "1.21"
       - name: install dependencies
         run: |
           export DEBIAN_FRONTEND=noninteractive
@@ -121,7 +121,7 @@ jobs:
       - uses: https://code.forgejo.org/actions/checkout@v3
       - uses: https://code.forgejo.org/actions/setup-go@v4
         with:
-          go-version: "1.20"
+          go-version: "1.21"
       - name: install dependencies
         run: |
           export DEBIAN_FRONTEND=noninteractive
@@ -155,7 +155,7 @@ jobs:
       - uses: https://code.forgejo.org/actions/checkout@v3
       - uses: https://code.forgejo.org/actions/setup-go@v4
         with:
-          go-version: "1.20"
+          go-version: "1.21"
       - name: install dependencies
         run: |
           export DEBIAN_FRONTEND=noninteractive

go.mod

@@ -107,15 +107,15 @@ require (
 	github.com/yuin/goldmark v1.5.5
 	github.com/yuin/goldmark-highlighting/v2 v2.0.0-20220924101305-151362477c87
 	github.com/yuin/goldmark-meta v1.1.0
-	golang.org/x/crypto v0.17.0
+	golang.org/x/crypto v0.21.0
 	golang.org/x/image v0.7.0
-	golang.org/x/net v0.13.0
+	golang.org/x/net v0.23.0
 	golang.org/x/oauth2 v0.8.0
-	golang.org/x/sys v0.15.0
+	golang.org/x/sys v0.18.0
 	golang.org/x/text v0.14.0
 	golang.org/x/tools v0.8.0
 	google.golang.org/grpc v1.53.0
-	google.golang.org/protobuf v1.30.0
+	google.golang.org/protobuf v1.33.0
 	gopkg.in/gomail.v2 v2.0.0-20160411212932-81ebce5c23df
 	gopkg.in/ini.v1 v1.67.0
 	gopkg.in/yaml.v3 v3.0.1

go.sum

@@ -1174,8 +1174,8 @@ golang.org/x/crypto v0.3.0/go.mod h1:hebNnKkNXi2UzZN1eVRvBB7co0a+JxK6XbPiWVs/3J4
 golang.org/x/crypto v0.3.1-0.20221117191849-2c476679df9a/go.mod h1:hebNnKkNXi2UzZN1eVRvBB7co0a+JxK6XbPiWVs/3J4=
 golang.org/x/crypto v0.6.0/go.mod h1:OFC/31mSvZgRz0V1QTNCzfAI1aIRzbiufJtkMIlEp58=
 golang.org/x/crypto v0.7.0/go.mod h1:pYwdfH91IfpZVANVyUOhSIPZaFoJGxTFbZhFTx+dXZU=
-golang.org/x/crypto v0.17.0 h1:r8bRNjWL3GshPW3gkd+RpvzWrZAwPS49OmTGZ/uhM4k=
+golang.org/x/crypto v0.21.0 h1:X31++rzVUdKhX5sWmSOFZxx8UW/ldWx55cbf08iNAMA=
-golang.org/x/crypto v0.17.0/go.mod h1:gCAAfMLgwOJRpTjQ2zCCt2OcSfYMTeZVSRtQlPC7Nq4=
+golang.org/x/crypto v0.21.0/go.mod h1:0BP7YvVV9gBbVKyeTG0Gyn+gZm94bibOW5BjDEYAOMs=
 golang.org/x/exp v0.0.0-20190121172915-509febef88a4/go.mod h1:CJ0aWSM057203Lf6IL+f9T1iT9GByDxfZKAQTCR3kQA=
 golang.org/x/exp v0.0.0-20190306152737-a1d7652674e8/go.mod h1:CJ0aWSM057203Lf6IL+f9T1iT9GByDxfZKAQTCR3kQA=
 golang.org/x/exp v0.0.0-20190510132918-efd6b22b2522/go.mod h1:ZjyILWgesfNpC6sMxTJOJm9Kp84zZh5NQWvqDGG3Qr8=
@@ -1269,8 +1269,8 @@ golang.org/x/net v0.6.0/go.mod h1:2Tu9+aMcznHK/AK1HMvgo6xiTLG5rD5rZLDS+rp2Bjs=
 golang.org/x/net v0.7.0/go.mod h1:2Tu9+aMcznHK/AK1HMvgo6xiTLG5rD5rZLDS+rp2Bjs=
 golang.org/x/net v0.8.0/go.mod h1:QVkue5JL9kW//ek3r6jTKnTFis1tRmNAW2P1shuFdJc=
 golang.org/x/net v0.9.0/go.mod h1:d48xBJpPfHeWQsugry2m+kC02ZBRGRgulfHnEXEuWns=
-golang.org/x/net v0.13.0 h1:Nvo8UFsZ8X3BhAC9699Z1j7XQ3rsZnUUm7jfBEk1ueY=
+golang.org/x/net v0.23.0 h1:7EYJ93RZ9vYSZAIb2x3lnuvqO5zneoD6IvWjuhfxjTs=
-golang.org/x/net v0.13.0/go.mod h1:zEVYFnQC7m/vmpQFELhcD1EWkZlX69l4oqgmer6hfKA=
+golang.org/x/net v0.23.0/go.mod h1:JKghWKKOSdJwpW2GEx0Ja7fmaKnMsbu+MWVZTokSYmg=
 golang.org/x/oauth2 v0.0.0-20180821212333-d2e6202438be/go.mod h1:N/0e6XlmueqKjAGxoOufVs8QHGRruUQn6yWY3a++T0U=
 golang.org/x/oauth2 v0.0.0-20190226205417-e64efc72b421/go.mod h1:gOpvHmFTYa4IltrdGE7lF6nIHvwfUNPOp7c8zoXwtLw=
 golang.org/x/oauth2 v0.0.0-20190604053449-0f29369cfe45/go.mod h1:gOpvHmFTYa4IltrdGE7lF6nIHvwfUNPOp7c8zoXwtLw=
@@ -1376,8 +1376,8 @@ golang.org/x/sys v0.3.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.5.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.6.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.7.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
-golang.org/x/sys v0.15.0 h1:h48lPFYpsTvQJZF4EKyI4aLHaev3CxivZmv7yZig9pc=
+golang.org/x/sys v0.18.0 h1:DBdB3niSjOA/O0blCZBqDefyWNYveAYMNF1Wum0DYQ4=
-golang.org/x/sys v0.15.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
+golang.org/x/sys v0.18.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
 golang.org/x/term v0.0.0-20201117132131-f5c789dd3221/go.mod h1:Nr5EML6q2oocZ2LXRh80K7BxOlk5/8JxuGnuhpl+muw=
 golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo=
 golang.org/x/term v0.0.0-20210927222741-03fcf44c2211/go.mod h1:jbD1KX2456YbFQfuXm/mYQcufACuNUgVhRMnK/tPxf8=
@@ -1387,7 +1387,7 @@ golang.org/x/term v0.2.0/go.mod h1:TVmDHMZPmdnySmBfhjOoOdhjzdE1h4u1VwSiw2l1Nuc=
 golang.org/x/term v0.5.0/go.mod h1:jMB1sMXY+tzblOD4FWmEbocvup2/aLOaQEp7JmGp78k=
 golang.org/x/term v0.6.0/go.mod h1:m6U89DPEgQRMq3DNkDClhWw02AUbt2daBVO4cn4Hv9U=
 golang.org/x/term v0.7.0/go.mod h1:P32HKFT3hSsZrRxla30E9HqToFYAQPCMs/zFMBUFqPY=
-golang.org/x/term v0.15.0 h1:y/Oo/a/q3IXu26lQgl04j/gjuBDOBlx7X6Om1j2CPW4=
+golang.org/x/term v0.18.0 h1:FcHjZXDMxI8mM3nwhX9HlKop4C0YQvCVCdwYl2wOtE8=
 golang.org/x/text v0.0.0-20170915032832-14c0d48ead0c/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
 golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
 golang.org/x/text v0.3.1-0.20180807135948-17ff2d5776d2/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
@@ -1585,8 +1585,8 @@ google.golang.org/protobuf v1.25.0/go.mod h1:9JNX74DMeImyA3h4bdi1ymwjUzf21/xIlba
 google.golang.org/protobuf v1.26.0-rc.1/go.mod h1:jlhhOSvTdKEhbULTjvd4ARK9grFBp09yW+WbY/TyQbw=
 google.golang.org/protobuf v1.26.0/go.mod h1:9q0QmTI4eRPtz6boOQmLYwt+qCgq0jsYwAQnmE0givc=
 google.golang.org/protobuf v1.27.1/go.mod h1:9q0QmTI4eRPtz6boOQmLYwt+qCgq0jsYwAQnmE0givc=
-google.golang.org/protobuf v1.30.0 h1:kPPoIgf3TsEvrm0PFe15JQ+570QVxYzEvvHqChK+cng=
+google.golang.org/protobuf v1.33.0 h1:uNO2rsAINq/JlFpSdYEKIZ0uKD/R9cpdv0T+yoGwGmI=
-google.golang.org/protobuf v1.30.0/go.mod h1:HV8QOd/L58Z+nl8r43ehVNZIU/HEI6OcFqwMG9pJV4I=
+google.golang.org/protobuf v1.33.0/go.mod h1:c6P6GXX6sHbq/GpV6MGZEdwhWPcYBgnhAHhKbcUYpos=
 gopkg.in/alecthomas/kingpin.v2 v2.2.6/go.mod h1:FMv+mEhP44yOT+4EoQTLFTRgOQ1FBLkstjWtayDeSgw=
 gopkg.in/alexcesaro/quotedprintable.v3 v3.0.0-20150716171945-2caba252f4dc h1:2gGKlE2+asNV9m7xrywl36YYNnBG5ZQ0r/BOOxqPpmk=
 gopkg.in/alexcesaro/quotedprintable.v3 v3.0.0-20150716171945-2caba252f4dc/go.mod h1:m7x9LTH6d71AHyAX77c9yqWCCa3UKHcVEj9y7hAtKDk=

routers/private/hook_pre_receive.go

@@ -101,6 +101,57 @@ func (ctx *preReceiveContext) AssertCreatePullRequest() bool {
 	return true
 }
 
+func (ctx *preReceiveContext) canChangeSettings() bool {
+	if !ctx.loadPusherAndPermission() {
+		return false
+	}
+
+	perm, err := access_model.GetUserRepoPermission(ctx, ctx.Repo.Repository, ctx.user)
+	if err != nil {
+		return false
+	}
+	if !perm.IsOwner() && !perm.IsAdmin() {
+		return false
+	}
+
+	if ctx.Repo.Repository.IsFork {
+		return false
+	}
+
+	return true
+}
+
+func (ctx *preReceiveContext) assertChangeSettings() bool {
+	opts := web.GetForm(ctx).(*private.HookOptions)
+
+	if len(opts.GitPushOptions) == 0 {
+		return true
+	}
+
+	_, hasPrivateOpt := opts.GitPushOptions[private.GitPushOptionRepoPrivate]
+	_, hasTemplateOpt := opts.GitPushOptions[private.GitPushOptionRepoTemplate]
+
+	if !hasPrivateOpt && !hasTemplateOpt {
+		// If neither `repo.private` nor `repo.template` is present in
+		// the push options, we're good to go without further permission
+		// checking.
+		return true
+	}
+
+	// Either `repo.private` or `repo.template` is among the push options,
+	// do some permission checks.
+	if !ctx.canChangeSettings() {
+		if ctx.Written() {
+			return false
+		}
+		ctx.JSON(http.StatusForbidden, private.Response{
+			UserMsg: "Permission denied for changing repo settings.",
+		})
+		return false
+	}
+	return true
+}
+
 // HookPreReceive checks whether a individual commit is acceptable
 func HookPreReceive(ctx *gitea_context.PrivateContext) {
 	opts := web.GetForm(ctx).(*private.HookOptions)
@@ -111,6 +162,10 @@ func HookPreReceive(ctx *gitea_context.PrivateContext) {
 		opts:           opts,
 	}
 
+	if !ourCtx.assertChangeSettings() {
+		return
+	}
+
 	// Iterate across the provided old commit IDs
 	for i := range opts.OldCommitIDs {
 		oldCommitID := opts.OldCommitIDs[i]

tests/integration/git_push_test.go

@@ -0,0 +1,93 @@
+// Copyright 2024 The Gitea Authors. All rights reserved.
+// SPDX-License-Identifier: MIT
+
+package integration
+
+import (
+	"net/url"
+	"testing"
+
+	"code.gitea.io/gitea/models/db"
+	repo_model "code.gitea.io/gitea/models/repo"
+	"code.gitea.io/gitea/models/unittest"
+	user_model "code.gitea.io/gitea/models/user"
+	repo_module "code.gitea.io/gitea/modules/repository"
+	repo_service "code.gitea.io/gitea/services/repository"
+
+	"github.com/stretchr/testify/require"
+)
+
+func TestOptionsGitPush(t *testing.T) {
+	onGiteaRun(t, testOptionsGitPush)
+}
+
+func testOptionsGitPush(t *testing.T, u *url.URL) {
+	user := unittest.AssertExistsAndLoadBean(t, &user_model.User{ID: 2})
+	repo, err := repo_service.CreateRepository(db.DefaultContext, user, user, repo_module.CreateRepoOptions{
+		Name:          "repo-to-push",
+		Description:   "test git push",
+		AutoInit:      false,
+		DefaultBranch: "main",
+		IsPrivate:     false,
+	})
+	require.NoError(t, err)
+	require.NotEmpty(t, repo)
+
+	gitPath := t.TempDir()
+
+	doGitInitTestRepository(gitPath)(t)
+
+	u.Path = repo.FullName() + ".git"
+	u.User = url.UserPassword(user.LowerName, userPassword)
+	doGitAddRemote(gitPath, "origin", u)(t)
+
+	{
+		// owner sets private & template to true via push options
+		branchName := "branch1"
+		doGitCreateBranch(gitPath, branchName)(t)
+		doGitPushTestRepository(gitPath, "origin", branchName, "-o", "repo.private=true", "-o", "repo.template=true")(t)
+		repo, err := repo_model.GetRepositoryByOwnerAndName(db.DefaultContext, user.Name, "repo-to-push")
+		require.NoError(t, err)
+		require.True(t, repo.IsPrivate)
+		require.True(t, repo.IsTemplate)
+	}
+
+	{
+		// owner sets private & template to false via push options
+		branchName := "branch2"
+		doGitCreateBranch(gitPath, branchName)(t)
+		doGitPushTestRepository(gitPath, "origin", branchName, "-o", "repo.private=false", "-o", "repo.template=false")(t)
+		repo, err = repo_model.GetRepositoryByOwnerAndName(db.DefaultContext, user.Name, "repo-to-push")
+		require.NoError(t, err)
+		require.False(t, repo.IsPrivate)
+		require.False(t, repo.IsTemplate)
+	}
+
+	{
+		// create a collaborator with write access
+		collaborator := unittest.AssertExistsAndLoadBean(t, &user_model.User{ID: 5})
+		u.User = url.UserPassword(collaborator.LowerName, userPassword)
+		doGitAddRemote(gitPath, "collaborator", u)(t)
+		repo, err := repo_model.GetRepositoryByOwnerAndName(db.DefaultContext, user.Name, "repo-to-push")
+		require.NoError(t, err)
+		repo_module.AddCollaborator(db.DefaultContext, repo, collaborator)
+	}
+
+	{
+		// collaborator with write access is allowed to push
+		branchName := "branch3"
+		doGitCreateBranch(gitPath, branchName)(t)
+		doGitPushTestRepository(gitPath, "collaborator", branchName)(t)
+	}
+
+	{
+		// collaborator with write access fails to change private & template via push options
+		branchName := "branch4"
+		doGitCreateBranch(gitPath, branchName)(t)
+		doGitPushTestRepositoryFail(gitPath, "collaborator", branchName, "-o", "repo.private=true", "-o", "repo.template=true")(t)
+		repo, err = repo_model.GetRepositoryByOwnerAndName(db.DefaultContext, user.Name, "repo-to-push")
+		require.NoError(t, err)
+		require.False(t, repo.IsPrivate)
+		require.False(t, repo.IsTemplate)
+	}
+}