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	fix permission check for delete tag (#19985)
fix #19970 by the way, fix some error response about protected tags. Signed-off-by: a1012112796 <1012112796@qq.com>
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				@ -345,6 +345,8 @@ func DeleteRelease(ctx *context.APIContext) {
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	//     "$ref": "#/responses/empty"
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	//   "404":
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	//     "$ref": "#/responses/notFound"
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	//   "405":
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	//     "$ref": "#/responses/empty"
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	id := ctx.ParamsInt64(":id")
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	rel, err := models.GetReleaseByID(ctx, id)
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@ -358,6 +360,10 @@ func DeleteRelease(ctx *context.APIContext) {
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		return
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	}
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	if err := release_service.DeleteReleaseByID(ctx, id, ctx.Doer, false); err != nil {
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		if models.IsErrProtectedTagName(err) {
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			ctx.Error(http.StatusMethodNotAllowed, "delTag", "user not allowed to delete protected tag")
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			return
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		}
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		ctx.Error(http.StatusInternalServerError, "DeleteReleaseByID", err)
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		return
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	}
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@ -92,6 +92,8 @@ func DeleteReleaseByTag(ctx *context.APIContext) {
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	//     "$ref": "#/responses/empty"
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	//   "404":
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	//     "$ref": "#/responses/notFound"
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	//   "405":
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	//     "$ref": "#/responses/empty"
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	tag := ctx.Params(":tag")
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@ -111,7 +113,12 @@ func DeleteReleaseByTag(ctx *context.APIContext) {
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	}
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	if err = releaseservice.DeleteReleaseByID(ctx, release.ID, ctx.Doer, false); err != nil {
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		if models.IsErrProtectedTagName(err) {
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			ctx.Error(http.StatusMethodNotAllowed, "delTag", "user not allowed to delete protected tag")
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			return
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		}
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		ctx.Error(http.StatusInternalServerError, "DeleteReleaseByID", err)
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		return
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	}
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	ctx.Status(http.StatusNoContent)
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@ -176,6 +176,8 @@ func CreateTag(ctx *context.APIContext) {
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	//     "$ref": "#/responses/Tag"
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	//   "404":
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	//     "$ref": "#/responses/notFound"
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	//   "405":
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	//     "$ref": "#/responses/empty"
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	//   "409":
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	//     "$ref": "#/responses/conflict"
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	form := web.GetForm(ctx).(*api.CreateTagOption)
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@ -196,6 +198,11 @@ func CreateTag(ctx *context.APIContext) {
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			ctx.Error(http.StatusConflict, "tag exist", err)
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			return
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		}
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		if models.IsErrProtectedTagName(err) {
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			ctx.Error(http.StatusMethodNotAllowed, "CreateNewTag", "user not allowed to create protected tag")
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			return
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		}
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		ctx.InternalServerError(err)
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		return
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	}
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@ -236,6 +243,8 @@ func DeleteTag(ctx *context.APIContext) {
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	//     "$ref": "#/responses/empty"
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	//   "404":
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	//     "$ref": "#/responses/notFound"
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	//   "405":
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	//     "$ref": "#/responses/empty"
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	//   "409":
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	//     "$ref": "#/responses/conflict"
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	tagName := ctx.Params("*")
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@ -256,7 +265,12 @@ func DeleteTag(ctx *context.APIContext) {
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	}
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	if err = releaseservice.DeleteReleaseByID(ctx, tag.ID, ctx.Doer, true); err != nil {
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		if models.IsErrProtectedTagName(err) {
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			ctx.Error(http.StatusMethodNotAllowed, "delTag", "user not allowed to delete protected tag")
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			return
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		}
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		ctx.Error(http.StatusInternalServerError, "DeleteReleaseByID", err)
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		return
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	}
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	ctx.Status(http.StatusNoContent)
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@ -373,6 +373,12 @@ func CreateBranch(ctx *context.Context) {
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		err = repo_service.CreateNewBranchFromCommit(ctx, ctx.Doer, ctx.Repo.Repository, ctx.Repo.CommitID, form.NewBranchName)
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	}
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	if err != nil {
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		if models.IsErrProtectedTagName(err) {
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			ctx.Flash.Error(ctx.Tr("repo.release.tag_name_protected"))
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			ctx.Redirect(ctx.Repo.RepoLink + "/src/" + ctx.Repo.BranchNameSubURL())
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			return
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		}
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		if models.IsErrTagAlreadyExists(err) {
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			e := err.(models.ErrTagAlreadyExists)
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			ctx.Flash.Error(ctx.Tr("repo.branch.tag_collision", e.TagName))
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@ -519,7 +519,11 @@ func DeleteTag(ctx *context.Context) {
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func deleteReleaseOrTag(ctx *context.Context, isDelTag bool) {
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	if err := releaseservice.DeleteReleaseByID(ctx, ctx.FormInt64("id"), ctx.Doer, isDelTag); err != nil {
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		ctx.Flash.Error("DeleteReleaseByID: " + err.Error())
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		if models.IsErrProtectedTagName(err) {
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			ctx.Flash.Error(ctx.Tr("repo.release.tag_name_protected"))
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		} else {
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			ctx.Flash.Error("DeleteReleaseByID: " + err.Error())
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		}
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	} else {
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		if isDelTag {
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			ctx.Flash.Success(ctx.Tr("repo.release.deletion_tag_success"))
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@ -294,6 +294,20 @@ func DeleteReleaseByID(ctx context.Context, id int64, doer *user_model.User, del
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	}
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	if delTag {
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		protectedTags, err := git_model.GetProtectedTags(rel.RepoID)
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		if err != nil {
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			return fmt.Errorf("GetProtectedTags: %v", err)
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		}
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		isAllowed, err := git_model.IsUserAllowedToControlTag(protectedTags, rel.TagName, rel.PublisherID)
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		if err != nil {
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			return err
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		}
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		if !isAllowed {
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			return models.ErrProtectedTagName{
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				TagName: rel.TagName,
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			}
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		}
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		if stdout, _, err := git.NewCommand(ctx, "tag", "-d", rel.TagName).
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			SetDescription(fmt.Sprintf("DeleteReleaseByID (git tag -d): %d", rel.ID)).
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			RunStdString(&git.RunOpts{Dir: repo.RepoPath()}); err != nil && !strings.Contains(err.Error(), "not found") {
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@ -8960,6 +8960,9 @@
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          },
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          "404": {
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            "$ref": "#/responses/notFound"
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          },
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          "405": {
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            "$ref": "#/responses/empty"
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          }
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        }
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      }
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@ -9043,6 +9046,9 @@
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          },
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          "404": {
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            "$ref": "#/responses/notFound"
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          },
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          "405": {
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            "$ref": "#/responses/empty"
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          }
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        }
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      },
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@ -9811,6 +9817,9 @@
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          "404": {
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            "$ref": "#/responses/notFound"
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          },
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          "405": {
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            "$ref": "#/responses/empty"
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          },
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          "409": {
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            "$ref": "#/responses/conflict"
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          }
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@ -9898,6 +9907,9 @@
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          "404": {
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            "$ref": "#/responses/notFound"
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          },
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          "405": {
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            "$ref": "#/responses/empty"
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          },
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          "409": {
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            "$ref": "#/responses/conflict"
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          }
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