// Copyright 2014 The Gogs Authors. All rights reserved. // Copyright 2017 The Gitea 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 context import ( "fmt" "io/ioutil" "path" "strings" "code.gitea.io/git" "code.gitea.io/gitea/models" "code.gitea.io/gitea/modules/cache" "code.gitea.io/gitea/modules/log" "code.gitea.io/gitea/modules/setting" "github.com/Unknwon/com" "gopkg.in/editorconfig/editorconfig-core-go.v1" "gopkg.in/macaron.v1" ) // PullRequest contains informations to make a pull request type PullRequest struct { BaseRepo *models.Repository Allowed bool SameRepo bool HeadInfo string // [<user>:]<branch> } // Repository contains information to operate a repository type Repository struct { AccessMode models.AccessMode IsWatching bool IsViewBranch bool IsViewTag bool IsViewCommit bool Repository *models.Repository Owner *models.User Commit *git.Commit Tag *git.Tag GitRepo *git.Repository BranchName string TagName string TreePath string CommitID string RepoLink string CloneLink models.CloneLink CommitsCount int64 Mirror *models.Mirror PullRequest *PullRequest } // IsOwner returns true if current user is the owner of repository. func (r *Repository) IsOwner() bool { return r.AccessMode >= models.AccessModeOwner } // IsAdmin returns true if current user has admin or higher access of repository. func (r *Repository) IsAdmin() bool { return r.AccessMode >= models.AccessModeAdmin } // IsWriter returns true if current user has write or higher access of repository. func (r *Repository) IsWriter() bool { return r.AccessMode >= models.AccessModeWrite } // HasAccess returns true if the current user has at least read access for this repository func (r *Repository) HasAccess() bool { return r.AccessMode >= models.AccessModeRead } // CanEnableEditor returns true if repository is editable and user has proper access level. func (r *Repository) CanEnableEditor() bool { return r.Repository.CanEnableEditor() && r.IsViewBranch && r.IsWriter() } // CanCreateBranch returns true if repository is editable and user has proper access level. func (r *Repository) CanCreateBranch() bool { return r.Repository.CanCreateBranch() && r.IsWriter() } // CanCommitToBranch returns true if repository is editable and user has proper access level // and branch is not protected func (r *Repository) CanCommitToBranch(doer *models.User) (bool, error) { protectedBranch, err := r.Repository.IsProtectedBranch(r.BranchName, doer) if err != nil { return false, err } return r.CanEnableEditor() && !protectedBranch, nil } // CanUseTimetracker returns whether or not a user can use the timetracker. func (r *Repository) CanUseTimetracker(issue *models.Issue, user *models.User) bool { // Checking for following: // 1. Is timetracker enabled // 2. Is the user a contributor, admin, poster or assignee and do the repository policies require this? return r.Repository.IsTimetrackerEnabled() && (!r.Repository.AllowOnlyContributorsToTrackTime() || r.IsWriter() || issue.IsPoster(user.ID) || issue.AssigneeID == user.ID) } // GetCommitsCount returns cached commit count for current view func (r *Repository) GetCommitsCount() (int64, error) { var contextName string if r.IsViewBranch { contextName = r.BranchName } else if r.IsViewTag { contextName = r.TagName } else { contextName = r.CommitID } return cache.GetInt64(r.Repository.GetCommitsCountCacheKey(contextName, r.IsViewBranch || r.IsViewTag), func() (int64, error) { return r.Commit.CommitsCount() }) } // BranchNameSubURL sub-URL for the BranchName field func (r *Repository) BranchNameSubURL() string { switch { case r.IsViewBranch: return "branch/" + r.BranchName case r.IsViewTag: return "tag/" + r.BranchName case r.IsViewCommit: return "commit/" + r.BranchName } log.Error(4, "Unknown view type for repo: %v", r) return "" } // GetEditorconfig returns the .editorconfig definition if found in the // HEAD of the default repo branch. func (r *Repository) GetEditorconfig() (*editorconfig.Editorconfig, error) { commit, err := r.GitRepo.GetBranchCommit(r.Repository.DefaultBranch) if err != nil { return nil, err } treeEntry, err := commit.GetTreeEntryByPath(".editorconfig") if err != nil { return nil, err } reader, err := treeEntry.Blob().Data() if err != nil { return nil, err } data, err := ioutil.ReadAll(reader) if err != nil { return nil, err } return editorconfig.ParseBytes(data) } // RetrieveBaseRepo retrieves base repository func RetrieveBaseRepo(ctx *Context, repo *models.Repository) { // Non-fork repository will not return error in this method. if err := repo.GetBaseRepo(); err != nil { if models.IsErrRepoNotExist(err) { repo.IsFork = false repo.ForkID = 0 return } ctx.Handle(500, "GetBaseRepo", err) return } else if err = repo.BaseRepo.GetOwner(); err != nil { ctx.Handle(500, "BaseRepo.GetOwner", err) return } } // ComposeGoGetImport returns go-get-import meta content. func ComposeGoGetImport(owner, repo string) string { return path.Join(setting.Domain, setting.AppSubURL, owner, repo) } // EarlyResponseForGoGetMeta responses appropriate go-get meta with status 200 // if user does not have actual access to the requested repository, // or the owner or repository does not exist at all. // This is particular a workaround for "go get" command which does not respect // .netrc file. func EarlyResponseForGoGetMeta(ctx *Context) { username := ctx.Params(":username") reponame := ctx.Params(":reponame") ctx.PlainText(200, []byte(com.Expand(`<meta name="go-import" content="{GoGetImport} git {CloneLink}">`, map[string]string{ "GoGetImport": ComposeGoGetImport(username, strings.TrimSuffix(reponame, ".git")), "CloneLink": models.ComposeHTTPSCloneURL(username, reponame), }))) } // RedirectToRepo redirect to a differently-named repository func RedirectToRepo(ctx *Context, redirectRepoID int64) { ownerName := ctx.Params(":username") previousRepoName := ctx.Params(":reponame") repo, err := models.GetRepositoryByID(redirectRepoID) if err != nil { ctx.Handle(500, "GetRepositoryByID", err) return } redirectPath := strings.Replace( ctx.Req.URL.Path, fmt.Sprintf("%s/%s", ownerName, previousRepoName), fmt.Sprintf("%s/%s", ownerName, repo.Name), 1, ) ctx.Redirect(redirectPath) } func repoAssignment(ctx *Context, repo *models.Repository) { // Admin has super access. if ctx.IsSigned && ctx.User.IsAdmin { ctx.Repo.AccessMode = models.AccessModeOwner } else { var userID int64 if ctx.User != nil { userID = ctx.User.ID } mode, err := models.AccessLevel(userID, repo) if err != nil { ctx.Handle(500, "AccessLevel", err) return } ctx.Repo.AccessMode = mode } // Check access. if ctx.Repo.AccessMode == models.AccessModeNone { if ctx.Query("go-get") == "1" { EarlyResponseForGoGetMeta(ctx) return } ctx.Handle(404, "no access right", nil) return } ctx.Data["HasAccess"] = true if repo.IsMirror { var err error ctx.Repo.Mirror, err = models.GetMirrorByRepoID(repo.ID) if err != nil { ctx.Handle(500, "GetMirror", err) return } ctx.Data["MirrorEnablePrune"] = ctx.Repo.Mirror.EnablePrune ctx.Data["MirrorInterval"] = ctx.Repo.Mirror.Interval ctx.Data["Mirror"] = ctx.Repo.Mirror } ctx.Repo.Repository = repo ctx.Data["RepoName"] = ctx.Repo.Repository.Name ctx.Data["IsBareRepo"] = ctx.Repo.Repository.IsBare } // RepoIDAssignment returns a macaron handler which assigns the repo to the context. func RepoIDAssignment() macaron.Handler { return func(ctx *Context) { repoID := ctx.ParamsInt64(":repoid") // Get repository. repo, err := models.GetRepositoryByID(repoID) if err != nil { if models.IsErrRepoNotExist(err) { ctx.Handle(404, "GetRepositoryByID", nil) } else { ctx.Handle(500, "GetRepositoryByID", err) } return } if err = repo.GetOwner(); err != nil { ctx.Handle(500, "GetOwner", err) return } repoAssignment(ctx, repo) } } // RepoAssignment returns a macaron to handle repository assignment func RepoAssignment() macaron.Handler { return func(ctx *Context) { var ( owner *models.User err error ) userName := ctx.Params(":username") repoName := ctx.Params(":reponame") // Check if the user is the same as the repository owner if ctx.IsSigned && ctx.User.LowerName == strings.ToLower(userName) { owner = ctx.User } else { owner, err = models.GetUserByName(userName) if err != nil { if models.IsErrUserNotExist(err) { if ctx.Query("go-get") == "1" { EarlyResponseForGoGetMeta(ctx) return } ctx.Handle(404, "GetUserByName", nil) } else { ctx.Handle(500, "GetUserByName", err) } return } } ctx.Repo.Owner = owner ctx.Data["Username"] = ctx.Repo.Owner.Name // Get repository. repo, err := models.GetRepositoryByName(owner.ID, repoName) if err != nil { if models.IsErrRepoNotExist(err) { redirectRepoID, err := models.LookupRepoRedirect(owner.ID, repoName) if err == nil { RedirectToRepo(ctx, redirectRepoID) } else if models.IsErrRepoRedirectNotExist(err) { if ctx.Query("go-get") == "1" { EarlyResponseForGoGetMeta(ctx) return } ctx.Handle(404, "GetRepositoryByName", nil) } else { ctx.Handle(500, "LookupRepoRedirect", err) } } else { ctx.Handle(500, "GetRepositoryByName", err) } return } repo.Owner = owner repoAssignment(ctx, repo) if ctx.Written() { return } gitRepo, err := git.OpenRepository(models.RepoPath(userName, repoName)) if err != nil { ctx.Handle(500, "RepoAssignment Invalid repo "+models.RepoPath(userName, repoName), err) return } ctx.Repo.GitRepo = gitRepo ctx.Repo.RepoLink = repo.Link() ctx.Data["RepoLink"] = ctx.Repo.RepoLink ctx.Data["RepoRelPath"] = ctx.Repo.Owner.Name + "/" + ctx.Repo.Repository.Name tags, err := ctx.Repo.GitRepo.GetTags() if err != nil { ctx.Handle(500, "GetTags", err) return } ctx.Data["Tags"] = tags count, err := models.GetReleaseCountByRepoID(ctx.Repo.Repository.ID, models.FindReleasesOptions{ IncludeDrafts: false, IncludeTags: true, }) if err != nil { ctx.Handle(500, "GetReleaseCountByRepoID", err) return } ctx.Repo.Repository.NumReleases = int(count) ctx.Data["Title"] = owner.Name + "/" + repo.Name ctx.Data["Repository"] = repo ctx.Data["Owner"] = ctx.Repo.Repository.Owner ctx.Data["IsRepositoryOwner"] = ctx.Repo.IsOwner() ctx.Data["IsRepositoryAdmin"] = ctx.Repo.IsAdmin() ctx.Data["IsRepositoryWriter"] = ctx.Repo.IsWriter() if ctx.Data["CanSignedUserFork"], err = ctx.Repo.Repository.CanUserFork(ctx.User); err != nil { ctx.Handle(500, "CanUserFork", err) return } ctx.Data["DisableSSH"] = setting.SSH.Disabled ctx.Data["ExposeAnonSSH"] = setting.SSH.ExposeAnonymous ctx.Data["DisableHTTP"] = setting.Repository.DisableHTTPGit ctx.Data["RepoSearchEnabled"] = setting.Indexer.RepoIndexerEnabled ctx.Data["CloneLink"] = repo.CloneLink() ctx.Data["WikiCloneLink"] = repo.WikiCloneLink() if ctx.IsSigned { ctx.Data["IsWatchingRepo"] = models.IsWatching(ctx.User.ID, repo.ID) ctx.Data["IsStaringRepo"] = models.IsStaring(ctx.User.ID, repo.ID) } // repo is bare and display enable if ctx.Repo.Repository.IsBare { ctx.Data["BranchName"] = ctx.Repo.Repository.DefaultBranch return } ctx.Data["TagName"] = ctx.Repo.TagName brs, err := ctx.Repo.GitRepo.GetBranches() if err != nil { ctx.Handle(500, "GetBranches", err) return } ctx.Data["Branches"] = brs ctx.Data["BrancheCount"] = len(brs) // If not branch selected, try default one. // If default branch doesn't exists, fall back to some other branch. if len(ctx.Repo.BranchName) == 0 { if len(ctx.Repo.Repository.DefaultBranch) > 0 && gitRepo.IsBranchExist(ctx.Repo.Repository.DefaultBranch) { ctx.Repo.BranchName = ctx.Repo.Repository.DefaultBranch } else if len(brs) > 0 { ctx.Repo.BranchName = brs[0] } } ctx.Data["BranchName"] = ctx.Repo.BranchName ctx.Data["CommitID"] = ctx.Repo.CommitID if repo.IsFork { RetrieveBaseRepo(ctx, repo) if ctx.Written() { return } } ctx.Data["IsForkedRepo"] = repo.IsFork // People who have push access or have forked repository can propose a new pull request. if ctx.Repo.IsWriter() || (ctx.IsSigned && ctx.User.HasForkedRepo(ctx.Repo.Repository.ID)) { // Pull request is allowed if this is a fork repository // and base repository accepts pull requests. if repo.BaseRepo != nil && repo.BaseRepo.AllowsPulls() { ctx.Data["BaseRepo"] = repo.BaseRepo ctx.Repo.PullRequest.BaseRepo = repo.BaseRepo ctx.Repo.PullRequest.Allowed = true ctx.Repo.PullRequest.HeadInfo = ctx.Repo.Owner.Name + ":" + ctx.Repo.BranchName } else { // Or, this is repository accepts pull requests between branches. if repo.AllowsPulls() { ctx.Data["BaseRepo"] = repo ctx.Repo.PullRequest.BaseRepo = repo ctx.Repo.PullRequest.Allowed = true ctx.Repo.PullRequest.SameRepo = true ctx.Repo.PullRequest.HeadInfo = ctx.Repo.BranchName } } // Reset repo units as otherwise user specific units wont be loaded later ctx.Repo.Repository.Units = nil } ctx.Data["PullRequestCtx"] = ctx.Repo.PullRequest if ctx.Query("go-get") == "1" { ctx.Data["GoGetImport"] = ComposeGoGetImport(owner.Name, repo.Name) prefix := setting.AppURL + path.Join(owner.Name, repo.Name, "src", ctx.Repo.BranchName) ctx.Data["GoDocDirectory"] = prefix + "{/dir}" ctx.Data["GoDocFile"] = prefix + "{/dir}/{file}#L{line}" } } } // RepoRefType type of repo reference type RepoRefType int const ( // RepoRefLegacy unknown type, make educated guess and redirect. // for backward compatibility with previous URL scheme RepoRefLegacy RepoRefType = iota // RepoRefAny is for usage where educated guess is needed // but redirect can not be made RepoRefAny // RepoRefBranch branch RepoRefBranch // RepoRefTag tag RepoRefTag // RepoRefCommit commit RepoRefCommit ) // RepoRef handles repository reference names when the ref name is not // explicitly given func RepoRef() macaron.Handler { // since no ref name is explicitly specified, ok to just use branch return RepoRefByType(RepoRefBranch) } func getRefNameFromPath(ctx *Context, path string, isExist func(string) bool) string { refName := "" parts := strings.Split(path, "/") for i, part := range parts { refName = strings.TrimPrefix(refName+"/"+part, "/") if isExist(refName) { ctx.Repo.TreePath = strings.Join(parts[i+1:], "/") return refName } } return "" } func getRefName(ctx *Context, pathType RepoRefType) string { path := ctx.Params("*") switch pathType { case RepoRefLegacy, RepoRefAny: if refName := getRefName(ctx, RepoRefBranch); len(refName) > 0 { return refName } if refName := getRefName(ctx, RepoRefTag); len(refName) > 0 { return refName } if refName := getRefName(ctx, RepoRefCommit); len(refName) > 0 { return refName } ctx.Repo.TreePath = path return ctx.Repo.Repository.DefaultBranch case RepoRefBranch: return getRefNameFromPath(ctx, path, ctx.Repo.GitRepo.IsBranchExist) case RepoRefTag: return getRefNameFromPath(ctx, path, ctx.Repo.GitRepo.IsTagExist) case RepoRefCommit: parts := strings.Split(path, "/") if len(parts) > 0 && len(parts[0]) == 40 { ctx.Repo.TreePath = strings.Join(parts[1:], "/") return parts[0] } default: log.Error(4, "Unrecognized path type: %v", path) } return "" } // RepoRefByType handles repository reference name for a specific type // of repository reference func RepoRefByType(refType RepoRefType) macaron.Handler { return func(ctx *Context) { // Empty repository does not have reference information. if ctx.Repo.Repository.IsBare { return } var ( refName string err error ) // For API calls. if ctx.Repo.GitRepo == nil { repoPath := models.RepoPath(ctx.Repo.Owner.Name, ctx.Repo.Repository.Name) ctx.Repo.GitRepo, err = git.OpenRepository(repoPath) if err != nil { ctx.Handle(500, "RepoRef Invalid repo "+repoPath, err) return } } // Get default branch. if len(ctx.Params("*")) == 0 { refName = ctx.Repo.Repository.DefaultBranch ctx.Repo.BranchName = refName if !ctx.Repo.GitRepo.IsBranchExist(refName) { brs, err := ctx.Repo.GitRepo.GetBranches() if err != nil { ctx.Handle(500, "GetBranches", err) return } else if len(brs) == 0 { err = fmt.Errorf("No branches in non-bare repository %s", ctx.Repo.GitRepo.Path) ctx.Handle(500, "GetBranches", err) return } refName = brs[0] } ctx.Repo.Commit, err = ctx.Repo.GitRepo.GetBranchCommit(refName) if err != nil { ctx.Handle(500, "GetBranchCommit", err) return } ctx.Repo.CommitID = ctx.Repo.Commit.ID.String() ctx.Repo.IsViewBranch = true } else { refName = getRefName(ctx, refType) ctx.Repo.BranchName = refName if ctx.Repo.GitRepo.IsBranchExist(refName) { ctx.Repo.IsViewBranch = true ctx.Repo.Commit, err = ctx.Repo.GitRepo.GetBranchCommit(refName) if err != nil { ctx.Handle(500, "GetBranchCommit", err) return } ctx.Repo.CommitID = ctx.Repo.Commit.ID.String() } else if ctx.Repo.GitRepo.IsTagExist(refName) { ctx.Repo.IsViewTag = true ctx.Repo.Commit, err = ctx.Repo.GitRepo.GetTagCommit(refName) if err != nil { ctx.Handle(500, "GetTagCommit", err) return } ctx.Repo.CommitID = ctx.Repo.Commit.ID.String() } else if len(refName) == 40 { ctx.Repo.IsViewCommit = true ctx.Repo.CommitID = refName ctx.Repo.Commit, err = ctx.Repo.GitRepo.GetCommit(refName) if err != nil { ctx.Handle(404, "GetCommit", nil) return } } else { ctx.Handle(404, "RepoRef invalid repo", fmt.Errorf("branch or tag not exist: %s", refName)) return } if refType == RepoRefLegacy { // redirect from old URL scheme to new URL scheme ctx.Redirect(path.Join(setting.AppSubURL, strings.TrimSuffix(ctx.Req.URL.String(), ctx.Params("*")), ctx.Repo.BranchNameSubURL())) return } } ctx.Data["BranchName"] = ctx.Repo.BranchName ctx.Data["BranchNameSubURL"] = ctx.Repo.BranchNameSubURL() ctx.Data["CommitID"] = ctx.Repo.CommitID ctx.Data["TreePath"] = ctx.Repo.TreePath ctx.Data["IsViewBranch"] = ctx.Repo.IsViewBranch ctx.Data["IsViewTag"] = ctx.Repo.IsViewTag ctx.Data["IsViewCommit"] = ctx.Repo.IsViewCommit ctx.Data["CanCreateBranch"] = ctx.Repo.CanCreateBranch() ctx.Repo.CommitsCount, err = ctx.Repo.GetCommitsCount() if err != nil { ctx.Handle(500, "GetCommitsCount", err) return } ctx.Data["CommitsCount"] = ctx.Repo.CommitsCount } } // RequireRepoAdmin returns a macaron middleware for requiring repository admin permission func RequireRepoAdmin() macaron.Handler { return func(ctx *Context) { if !ctx.IsSigned || (!ctx.Repo.IsAdmin() && !ctx.User.IsAdmin) { ctx.Handle(404, ctx.Req.RequestURI, nil) return } } } // RequireRepoWriter returns a macaron middleware for requiring repository write permission func RequireRepoWriter() macaron.Handler { return func(ctx *Context) { if !ctx.IsSigned || (!ctx.Repo.IsWriter() && !ctx.User.IsAdmin) { ctx.Handle(404, ctx.Req.RequestURI, nil) return } } } // LoadRepoUnits loads repsitory's units, it should be called after repository and user loaded func LoadRepoUnits() macaron.Handler { return func(ctx *Context) { var isAdmin bool if ctx.User != nil && ctx.User.IsAdmin { isAdmin = true } var userID int64 if ctx.User != nil { userID = ctx.User.ID } err := ctx.Repo.Repository.LoadUnitsByUserID(userID, isAdmin) if err != nil { ctx.Handle(500, "LoadUnitsByUserID", err) return } } } // CheckUnit will check whether unit type is enabled func CheckUnit(unitType models.UnitType) macaron.Handler { return func(ctx *Context) { if !ctx.Repo.Repository.UnitEnabled(unitType) { ctx.Handle(404, "CheckUnit", fmt.Errorf("%s: %v", ctx.Tr("units.error.unit_not_allowed"), unitType)) } } } // CheckAnyUnit will check whether any of the unit types are enabled func CheckAnyUnit(unitTypes ...models.UnitType) macaron.Handler { return func(ctx *Context) { if !ctx.Repo.Repository.AnyUnitEnabled(unitTypes...) { ctx.Handle(404, "CheckAnyUnit", fmt.Errorf("%s: %v", ctx.Tr("units.error.unit_not_allowed"), unitTypes)) } } } // GitHookService checks if repository Git hooks service has been enabled. func GitHookService() macaron.Handler { return func(ctx *Context) { if !ctx.User.CanEditGitHook() { ctx.Handle(404, "GitHookService", nil) return } } } // UnitTypes returns a macaron middleware to set unit types to context variables. func UnitTypes() macaron.Handler { return func(ctx *Context) { ctx.Data["UnitTypeCode"] = models.UnitTypeCode ctx.Data["UnitTypeIssues"] = models.UnitTypeIssues ctx.Data["UnitTypePullRequests"] = models.UnitTypePullRequests ctx.Data["UnitTypeReleases"] = models.UnitTypeReleases ctx.Data["UnitTypeWiki"] = models.UnitTypeWiki ctx.Data["UnitTypeExternalWiki"] = models.UnitTypeExternalWiki ctx.Data["UnitTypeExternalTracker"] = models.UnitTypeExternalTracker } }