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gitea/routers/web/repo/fork.go

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// Copyright 2024 The Gitea Authors. All rights reserved.
// SPDX-License-Identifier: MIT
package repo
import (
"errors"
"net/http"
"net/url"
"code.gitea.io/gitea/models/db"
git_model "code.gitea.io/gitea/models/git"
"code.gitea.io/gitea/models/organization"
repo_model "code.gitea.io/gitea/models/repo"
user_model "code.gitea.io/gitea/models/user"
"code.gitea.io/gitea/modules/base"
"code.gitea.io/gitea/modules/log"
"code.gitea.io/gitea/modules/optional"
"code.gitea.io/gitea/modules/setting"
"code.gitea.io/gitea/modules/structs"
"code.gitea.io/gitea/modules/web"
"code.gitea.io/gitea/services/context"
"code.gitea.io/gitea/services/forms"
repo_service "code.gitea.io/gitea/services/repository"
)
const (
tplFork base.TplName = "repo/pulls/fork"
)
func getForkRepository(ctx *context.Context) *repo_model.Repository {
forkRepo := ctx.Repo.Repository
if ctx.Written() {
return nil
}
if forkRepo.IsEmpty {
log.Trace("Empty repository %-v", forkRepo)
ctx.NotFound("getForkRepository", nil)
return nil
}
if err := forkRepo.LoadOwner(ctx); err != nil {
ctx.ServerError("LoadOwner", err)
return nil
}
ctx.Data["repo_name"] = forkRepo.Name
ctx.Data["description"] = forkRepo.Description
ctx.Data["IsPrivate"] = forkRepo.IsPrivate || forkRepo.Owner.Visibility == structs.VisibleTypePrivate
canForkToUser := forkRepo.OwnerID != ctx.Doer.ID && !repo_model.HasForkedRepo(ctx, ctx.Doer.ID, forkRepo.ID)
ctx.Data["ForkRepo"] = forkRepo
ownedOrgs, err := organization.GetOrgsCanCreateRepoByUserID(ctx, ctx.Doer.ID)
if err != nil {
ctx.ServerError("GetOrgsCanCreateRepoByUserID", err)
return nil
}
var orgs []*organization.Organization
for _, org := range ownedOrgs {
if forkRepo.OwnerID != org.ID && !repo_model.HasForkedRepo(ctx, org.ID, forkRepo.ID) {
orgs = append(orgs, org)
}
}
traverseParentRepo := forkRepo
for {
if ctx.Doer.ID == traverseParentRepo.OwnerID {
canForkToUser = false
} else {
for i, org := range orgs {
if org.ID == traverseParentRepo.OwnerID {
orgs = append(orgs[:i], orgs[i+1:]...)
break
}
}
}
if !traverseParentRepo.IsFork {
break
}
traverseParentRepo, err = repo_model.GetRepositoryByID(ctx, traverseParentRepo.ForkID)
if err != nil {
ctx.ServerError("GetRepositoryByID", err)
return nil
}
}
ctx.Data["CanForkToUser"] = canForkToUser
ctx.Data["Orgs"] = orgs
if canForkToUser {
ctx.Data["ContextUser"] = ctx.Doer
} else if len(orgs) > 0 {
ctx.Data["ContextUser"] = orgs[0]
} else {
ctx.Data["CanForkRepo"] = false
ctx.Flash.Error(ctx.Tr("repo.fork_no_valid_owners"), true)
return nil
}
branches, err := git_model.FindBranchNames(ctx, git_model.FindBranchOptions{
RepoID: ctx.Repo.Repository.ID,
ListOptions: db.ListOptionsAll,
IsDeletedBranch: optional.Some(false),
// Add it as the first option
ExcludeBranchNames: []string{ctx.Repo.Repository.DefaultBranch},
})
if err != nil {
ctx.ServerError("FindBranchNames", err)
return nil
}
ctx.Data["Branches"] = append([]string{ctx.Repo.Repository.DefaultBranch}, branches...)
return forkRepo
}
// Fork render repository fork page
func Fork(ctx *context.Context) {
ctx.Data["Title"] = ctx.Tr("new_fork")
if ctx.Doer.CanForkRepo() {
ctx.Data["CanForkRepo"] = true
} else {
maxCreationLimit := ctx.Doer.MaxCreationLimit()
msg := ctx.TrN(maxCreationLimit, "repo.form.reach_limit_of_creation_1", "repo.form.reach_limit_of_creation_n", maxCreationLimit)
ctx.Flash.Error(msg, true)
}
getForkRepository(ctx)
if ctx.Written() {
return
}
ctx.HTML(http.StatusOK, tplFork)
}
// ForkPost response for forking a repository
func ForkPost(ctx *context.Context) {
form := web.GetForm(ctx).(*forms.CreateRepoForm)
ctx.Data["Title"] = ctx.Tr("new_fork")
ctx.Data["CanForkRepo"] = true
ctxUser := checkContextUser(ctx, form.UID)
if ctx.Written() {
return
}
forkRepo := getForkRepository(ctx)
if ctx.Written() {
return
}
ctx.Data["ContextUser"] = ctxUser
if ctx.HasError() {
ctx.HTML(http.StatusOK, tplFork)
return
}
var err error
traverseParentRepo := forkRepo
for {
if ctxUser.ID == traverseParentRepo.OwnerID {
ctx.RenderWithErr(ctx.Tr("repo.settings.new_owner_has_same_repo"), tplFork, &form)
return
}
repo := repo_model.GetForkedRepo(ctx, ctxUser.ID, traverseParentRepo.ID)
if repo != nil {
ctx.Redirect(ctxUser.HomeLink() + "/" + url.PathEscape(repo.Name))
return
}
if !traverseParentRepo.IsFork {
break
}
traverseParentRepo, err = repo_model.GetRepositoryByID(ctx, traverseParentRepo.ForkID)
if err != nil {
ctx.ServerError("GetRepositoryByID", err)
return
}
}
// Check if user is allowed to create repo's on the organization.
if ctxUser.IsOrganization() {
isAllowedToFork, err := organization.OrgFromUser(ctxUser).CanCreateOrgRepo(ctx, ctx.Doer.ID)
if err != nil {
ctx.ServerError("CanCreateOrgRepo", err)
return
} else if !isAllowedToFork {
ctx.Error(http.StatusForbidden)
return
}
}
repo, err := repo_service.ForkRepository(ctx, ctx.Doer, ctxUser, repo_service.ForkRepoOptions{
BaseRepo: forkRepo,
Name: form.RepoName,
Description: form.Description,
SingleBranch: form.ForkSingleBranch,
})
if err != nil {
ctx.Data["Err_RepoName"] = true
switch {
case repo_model.IsErrReachLimitOfRepo(err):
maxCreationLimit := ctxUser.MaxCreationLimit()
msg := ctx.TrN(maxCreationLimit, "repo.form.reach_limit_of_creation_1", "repo.form.reach_limit_of_creation_n", maxCreationLimit)
ctx.RenderWithErr(msg, tplFork, &form)
case repo_model.IsErrRepoAlreadyExist(err):
ctx.RenderWithErr(ctx.Tr("repo.settings.new_owner_has_same_repo"), tplFork, &form)
case repo_model.IsErrRepoFilesAlreadyExist(err):
switch {
case ctx.IsUserSiteAdmin() || (setting.Repository.AllowAdoptionOfUnadoptedRepositories && setting.Repository.AllowDeleteOfUnadoptedRepositories):
ctx.RenderWithErr(ctx.Tr("form.repository_files_already_exist.adopt_or_delete"), tplFork, form)
case setting.Repository.AllowAdoptionOfUnadoptedRepositories:
ctx.RenderWithErr(ctx.Tr("form.repository_files_already_exist.adopt"), tplFork, form)
case setting.Repository.AllowDeleteOfUnadoptedRepositories:
ctx.RenderWithErr(ctx.Tr("form.repository_files_already_exist.delete"), tplFork, form)
default:
ctx.RenderWithErr(ctx.Tr("form.repository_files_already_exist"), tplFork, form)
}
case db.IsErrNameReserved(err):
ctx.RenderWithErr(ctx.Tr("repo.form.name_reserved", err.(db.ErrNameReserved).Name), tplFork, &form)
case db.IsErrNamePatternNotAllowed(err):
ctx.RenderWithErr(ctx.Tr("repo.form.name_pattern_not_allowed", err.(db.ErrNamePatternNotAllowed).Pattern), tplFork, &form)
case errors.Is(err, user_model.ErrBlockedUser):
ctx.RenderWithErr(ctx.Tr("repo.fork.blocked_user"), tplFork, form)
default:
ctx.ServerError("ForkPost", err)
}
return
}
log.Trace("Repository forked[%d]: %s/%s", forkRepo.ID, ctxUser.Name, repo.Name)
ctx.Redirect(ctxUser.HomeLink() + "/" + url.PathEscape(repo.Name))
}