access.go 6.6 KB

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  1. // Copyright 2014 The Gogs Authors. All rights reserved.
  2. // Use of this source code is governed by a MIT-style
  3. // license that can be found in the LICENSE file.
  4. package models
  5. import (
  6. "fmt"
  7. log "gopkg.in/clog.v1"
  8. )
  9. type AccessMode int
  10. const (
  11. ACCESS_MODE_NONE AccessMode = iota // 0
  12. ACCESS_MODE_READ // 1
  13. ACCESS_MODE_WRITE // 2
  14. ACCESS_MODE_ADMIN // 3
  15. ACCESS_MODE_OWNER // 4
  16. )
  17. func (mode AccessMode) String() string {
  18. switch mode {
  19. case ACCESS_MODE_READ:
  20. return "read"
  21. case ACCESS_MODE_WRITE:
  22. return "write"
  23. case ACCESS_MODE_ADMIN:
  24. return "admin"
  25. case ACCESS_MODE_OWNER:
  26. return "owner"
  27. default:
  28. return "none"
  29. }
  30. }
  31. // ParseAccessMode returns corresponding access mode to given permission string.
  32. func ParseAccessMode(permission string) AccessMode {
  33. switch permission {
  34. case "write":
  35. return ACCESS_MODE_WRITE
  36. case "admin":
  37. return ACCESS_MODE_ADMIN
  38. default:
  39. return ACCESS_MODE_READ
  40. }
  41. }
  42. // Access represents the highest access level of a user to the repository. The only access type
  43. // that is not in this table is the real owner of a repository. In case of an organization
  44. // repository, the members of the owners team are in this table.
  45. type Access struct {
  46. ID int64 `xorm:"pk autoincr"`
  47. UserID int64 `xorm:"UNIQUE(s)"`
  48. RepoID int64 `xorm:"UNIQUE(s)"`
  49. Mode AccessMode
  50. }
  51. func accessLevel(e Engine, u *User, repo *Repository) (AccessMode, error) {
  52. mode := ACCESS_MODE_NONE
  53. if !repo.IsPrivate {
  54. mode = ACCESS_MODE_READ
  55. }
  56. if u == nil {
  57. return mode, nil
  58. }
  59. if u.ID == repo.OwnerID {
  60. return ACCESS_MODE_OWNER, nil
  61. }
  62. a := &Access{UserID: u.ID, RepoID: repo.ID}
  63. if has, err := e.Get(a); !has || err != nil {
  64. return mode, err
  65. }
  66. return a.Mode, nil
  67. }
  68. // AccessLevel returns the Access a user has to a repository. Will return NoneAccess if the
  69. // user does not have access. User can be nil!
  70. func AccessLevel(u *User, repo *Repository) (AccessMode, error) {
  71. return accessLevel(x, u, repo)
  72. }
  73. func hasAccess(e Engine, u *User, repo *Repository, testMode AccessMode) (bool, error) {
  74. mode, err := accessLevel(e, u, repo)
  75. return mode >= testMode, err
  76. }
  77. // HasAccess returns true if someone has the request access level. User can be nil!
  78. func HasAccess(u *User, repo *Repository, testMode AccessMode) (bool, error) {
  79. return hasAccess(x, u, repo, testMode)
  80. }
  81. // GetRepositoryAccesses finds all repositories with their access mode where a user has access but does not own.
  82. func (u *User) GetRepositoryAccesses() (map[*Repository]AccessMode, error) {
  83. accesses := make([]*Access, 0, 10)
  84. if err := x.Find(&accesses, &Access{UserID: u.ID}); err != nil {
  85. return nil, err
  86. }
  87. repos := make(map[*Repository]AccessMode, len(accesses))
  88. for _, access := range accesses {
  89. repo, err := GetRepositoryByID(access.RepoID)
  90. if err != nil {
  91. if IsErrRepoNotExist(err) {
  92. log.Error(4, "GetRepositoryByID: %v", err)
  93. continue
  94. }
  95. return nil, err
  96. }
  97. if err = repo.GetOwner(); err != nil {
  98. return nil, err
  99. } else if repo.OwnerID == u.ID {
  100. continue
  101. }
  102. repos[repo] = access.Mode
  103. }
  104. return repos, nil
  105. }
  106. // GetAccessibleRepositories finds repositories which the user has access but does not own.
  107. // If limit is smaller than 1 means returns all found results.
  108. func (user *User) GetAccessibleRepositories(limit int) (repos []*Repository, _ error) {
  109. sess := x.Where("owner_id !=? ", user.ID).Desc("updated_unix")
  110. if limit > 0 {
  111. sess.Limit(limit)
  112. repos = make([]*Repository, 0, limit)
  113. } else {
  114. repos = make([]*Repository, 0, 10)
  115. }
  116. return repos, sess.Join("INNER", "access", "access.user_id = ? AND access.repo_id = repository.id", user.ID).Find(&repos)
  117. }
  118. func maxAccessMode(modes ...AccessMode) AccessMode {
  119. max := ACCESS_MODE_NONE
  120. for _, mode := range modes {
  121. if mode > max {
  122. max = mode
  123. }
  124. }
  125. return max
  126. }
  127. // FIXME: do corss-comparison so reduce deletions and additions to the minimum?
  128. func (repo *Repository) refreshAccesses(e Engine, accessMap map[int64]AccessMode) (err error) {
  129. newAccesses := make([]Access, 0, len(accessMap))
  130. for userID, mode := range accessMap {
  131. newAccesses = append(newAccesses, Access{
  132. UserID: userID,
  133. RepoID: repo.ID,
  134. Mode: mode,
  135. })
  136. }
  137. // Delete old accesses and insert new ones for repository.
  138. if _, err = e.Delete(&Access{RepoID: repo.ID}); err != nil {
  139. return fmt.Errorf("delete old accesses: %v", err)
  140. } else if _, err = e.Insert(newAccesses); err != nil {
  141. return fmt.Errorf("insert new accesses: %v", err)
  142. }
  143. return nil
  144. }
  145. // refreshCollaboratorAccesses retrieves repository collaborations with their access modes.
  146. func (repo *Repository) refreshCollaboratorAccesses(e Engine, accessMap map[int64]AccessMode) error {
  147. collaborations, err := repo.getCollaborations(e)
  148. if err != nil {
  149. return fmt.Errorf("getCollaborations: %v", err)
  150. }
  151. for _, c := range collaborations {
  152. accessMap[c.UserID] = c.Mode
  153. }
  154. return nil
  155. }
  156. // recalculateTeamAccesses recalculates new accesses for teams of an organization
  157. // except the team whose ID is given. It is used to assign a team ID when
  158. // remove repository from that team.
  159. func (repo *Repository) recalculateTeamAccesses(e Engine, ignTeamID int64) (err error) {
  160. accessMap := make(map[int64]AccessMode, 20)
  161. if err = repo.getOwner(e); err != nil {
  162. return err
  163. } else if !repo.Owner.IsOrganization() {
  164. return fmt.Errorf("owner is not an organization: %d", repo.OwnerID)
  165. }
  166. if err = repo.refreshCollaboratorAccesses(e, accessMap); err != nil {
  167. return fmt.Errorf("refreshCollaboratorAccesses: %v", err)
  168. }
  169. if err = repo.Owner.getTeams(e); err != nil {
  170. return err
  171. }
  172. for _, t := range repo.Owner.Teams {
  173. if t.ID == ignTeamID {
  174. continue
  175. }
  176. // Owner team gets owner access, and skip for teams that do not
  177. // have relations with repository.
  178. if t.IsOwnerTeam() {
  179. t.Authorize = ACCESS_MODE_OWNER
  180. } else if !t.hasRepository(e, repo.ID) {
  181. continue
  182. }
  183. if err = t.getMembers(e); err != nil {
  184. return fmt.Errorf("getMembers '%d': %v", t.ID, err)
  185. }
  186. for _, m := range t.Members {
  187. accessMap[m.ID] = maxAccessMode(accessMap[m.ID], t.Authorize)
  188. }
  189. }
  190. return repo.refreshAccesses(e, accessMap)
  191. }
  192. func (repo *Repository) recalculateAccesses(e Engine) error {
  193. if repo.Owner.IsOrganization() {
  194. return repo.recalculateTeamAccesses(e, 0)
  195. }
  196. accessMap := make(map[int64]AccessMode, 20)
  197. if err := repo.refreshCollaboratorAccesses(e, accessMap); err != nil {
  198. return fmt.Errorf("refreshCollaboratorAccesses: %v", err)
  199. }
  200. return repo.refreshAccesses(e, accessMap)
  201. }
  202. // RecalculateAccesses recalculates all accesses for repository.
  203. func (r *Repository) RecalculateAccesses() error {
  204. return r.recalculateAccesses(x)
  205. }