forgejo/routers/api/v1/repo/issue_comment_attachment.go
Gergely Nagy 67fa52dedb
feat(quota): Quota enforcement
The previous commit laid out the foundation of the quota engine, this
one builds on top of it, and implements the actual enforcement.

Enforcement happens at the route decoration level, whenever possible. In
case of the API, when over quota, a 413 error is returned, with an
appropriate JSON payload. In case of web routes, a 413 HTML page is
rendered with similar information.

This implementation is for a **soft quota**: quota usage is checked
before an operation is to be performed, and the operation is *only*
denied if the user is already over quota. This makes it possible to go
over quota, but has the significant advantage of being practically
implementable within the current Forgejo architecture.

The goal of enforcement is to deny actions that can make the user go
over quota, and allow the rest. As such, deleting things should - in
almost all cases - be possible. A prime exemption is deleting files via
the web ui: that creates a new commit, which in turn increases repo
size, thus, is denied if the user is over quota.

Limitations
-----------

Because we generally work at a route decorator level, and rarely
look *into* the operation itself, `size:repos:public` and
`size:repos:private` are not enforced at this level, the engine enforces
against `size:repos:all`. This will be improved in the future.

AGit does not play very well with this system, because AGit PRs count
toward the repo they're opened against, while in the GitHub-style fork +
pull model, it counts against the fork. This too, can be improved in the
future.

There's very little done on the UI side to guard against going over
quota. What this patch implements, is enforcement, not prevention. The
UI will still let you *try* operations that *will* result in a denial.

Signed-off-by: Gergely Nagy <forgejo@gergo.csillger.hu>
2024-08-02 11:10:34 +02:00

401 lines
11 KiB
Go

// Copyright 2021 The Gitea Authors. All rights reserved.
// SPDX-License-Identifier: MIT
package repo
import (
"net/http"
"time"
issues_model "code.gitea.io/gitea/models/issues"
repo_model "code.gitea.io/gitea/models/repo"
"code.gitea.io/gitea/modules/log"
"code.gitea.io/gitea/modules/setting"
api "code.gitea.io/gitea/modules/structs"
"code.gitea.io/gitea/modules/web"
"code.gitea.io/gitea/services/attachment"
"code.gitea.io/gitea/services/context"
"code.gitea.io/gitea/services/context/upload"
"code.gitea.io/gitea/services/convert"
issue_service "code.gitea.io/gitea/services/issue"
)
// GetIssueCommentAttachment gets a single attachment of the comment
func GetIssueCommentAttachment(ctx *context.APIContext) {
// swagger:operation GET /repos/{owner}/{repo}/issues/comments/{id}/assets/{attachment_id} issue issueGetIssueCommentAttachment
// ---
// summary: Get a comment attachment
// produces:
// - application/json
// parameters:
// - name: owner
// in: path
// description: owner of the repo
// type: string
// required: true
// - name: repo
// in: path
// description: name of the repo
// type: string
// required: true
// - name: id
// in: path
// description: id of the comment
// type: integer
// format: int64
// required: true
// - name: attachment_id
// in: path
// description: id of the attachment to get
// type: integer
// format: int64
// required: true
// responses:
// "200":
// "$ref": "#/responses/Attachment"
// "404":
// "$ref": "#/responses/error"
comment := ctx.Comment
attachment := getIssueCommentAttachmentSafeRead(ctx)
if attachment == nil {
return
}
if attachment.CommentID != comment.ID {
log.Debug("User requested attachment[%d] is not in comment[%d].", attachment.ID, comment.ID)
ctx.NotFound("attachment not in comment")
return
}
ctx.JSON(http.StatusOK, convert.ToAPIAttachment(ctx.Repo.Repository, attachment))
}
// ListIssueCommentAttachments lists all attachments of the comment
func ListIssueCommentAttachments(ctx *context.APIContext) {
// swagger:operation GET /repos/{owner}/{repo}/issues/comments/{id}/assets issue issueListIssueCommentAttachments
// ---
// summary: List comment's attachments
// produces:
// - application/json
// parameters:
// - name: owner
// in: path
// description: owner of the repo
// type: string
// required: true
// - name: repo
// in: path
// description: name of the repo
// type: string
// required: true
// - name: id
// in: path
// description: id of the comment
// type: integer
// format: int64
// required: true
// responses:
// "200":
// "$ref": "#/responses/AttachmentList"
// "404":
// "$ref": "#/responses/error"
comment := ctx.Comment
if err := comment.LoadAttachments(ctx); err != nil {
ctx.Error(http.StatusInternalServerError, "LoadAttachments", err)
return
}
ctx.JSON(http.StatusOK, convert.ToAPIAttachments(ctx.Repo.Repository, comment.Attachments))
}
// CreateIssueCommentAttachment creates an attachment and saves the given file
func CreateIssueCommentAttachment(ctx *context.APIContext) {
// swagger:operation POST /repos/{owner}/{repo}/issues/comments/{id}/assets issue issueCreateIssueCommentAttachment
// ---
// summary: Create a comment attachment
// produces:
// - application/json
// consumes:
// - multipart/form-data
// parameters:
// - name: owner
// in: path
// description: owner of the repo
// type: string
// required: true
// - name: repo
// in: path
// description: name of the repo
// type: string
// required: true
// - name: id
// in: path
// description: id of the comment
// type: integer
// format: int64
// required: true
// - name: name
// in: query
// description: name of the attachment
// type: string
// required: false
// - name: updated_at
// in: query
// description: time of the attachment's creation. This is a timestamp in RFC 3339 format
// type: string
// format: date-time
// - name: attachment
// in: formData
// description: attachment to upload
// type: file
// required: true
// responses:
// "201":
// "$ref": "#/responses/Attachment"
// "400":
// "$ref": "#/responses/error"
// "404":
// "$ref": "#/responses/error"
// "413":
// "$ref": "#/responses/quotaExceeded"
// "422":
// "$ref": "#/responses/validationError"
// "423":
// "$ref": "#/responses/repoArchivedError"
// Check if comment exists and load comment
if !canUserWriteIssueCommentAttachment(ctx) {
return
}
comment := ctx.Comment
updatedAt := ctx.Req.FormValue("updated_at")
if len(updatedAt) != 0 {
updated, err := time.Parse(time.RFC3339, updatedAt)
if err != nil {
ctx.Error(http.StatusInternalServerError, "time.Parse", err)
return
}
err = comment.LoadIssue(ctx)
if err != nil {
ctx.Error(http.StatusInternalServerError, "LoadIssue", err)
return
}
err = issue_service.SetIssueUpdateDate(ctx, comment.Issue, &updated, ctx.Doer)
if err != nil {
ctx.Error(http.StatusForbidden, "SetIssueUpdateDate", err)
return
}
}
// Get uploaded file from request
file, header, err := ctx.Req.FormFile("attachment")
if err != nil {
ctx.Error(http.StatusInternalServerError, "FormFile", err)
return
}
defer file.Close()
filename := header.Filename
if query := ctx.FormString("name"); query != "" {
filename = query
}
attachment, err := attachment.UploadAttachment(ctx, file, setting.Attachment.AllowedTypes, header.Size, &repo_model.Attachment{
Name: filename,
UploaderID: ctx.Doer.ID,
RepoID: ctx.Repo.Repository.ID,
IssueID: comment.IssueID,
CommentID: comment.ID,
NoAutoTime: comment.Issue.NoAutoTime,
CreatedUnix: comment.Issue.UpdatedUnix,
})
if err != nil {
if upload.IsErrFileTypeForbidden(err) {
ctx.Error(http.StatusUnprocessableEntity, "", err)
} else {
ctx.Error(http.StatusInternalServerError, "UploadAttachment", err)
}
return
}
if err := comment.LoadAttachments(ctx); err != nil {
ctx.Error(http.StatusInternalServerError, "LoadAttachments", err)
return
}
if err = issue_service.UpdateComment(ctx, comment, comment.ContentVersion, ctx.Doer, comment.Content); err != nil {
ctx.ServerError("UpdateComment", err)
return
}
ctx.JSON(http.StatusCreated, convert.ToAPIAttachment(ctx.Repo.Repository, attachment))
}
// EditIssueCommentAttachment updates the given attachment
func EditIssueCommentAttachment(ctx *context.APIContext) {
// swagger:operation PATCH /repos/{owner}/{repo}/issues/comments/{id}/assets/{attachment_id} issue issueEditIssueCommentAttachment
// ---
// summary: Edit a comment attachment
// produces:
// - application/json
// consumes:
// - application/json
// parameters:
// - name: owner
// in: path
// description: owner of the repo
// type: string
// required: true
// - name: repo
// in: path
// description: name of the repo
// type: string
// required: true
// - name: id
// in: path
// description: id of the comment
// type: integer
// format: int64
// required: true
// - name: attachment_id
// in: path
// description: id of the attachment to edit
// type: integer
// format: int64
// required: true
// - name: body
// in: body
// schema:
// "$ref": "#/definitions/EditAttachmentOptions"
// responses:
// "201":
// "$ref": "#/responses/Attachment"
// "404":
// "$ref": "#/responses/error"
// "413":
// "$ref": "#/responses/quotaExceeded"
// "423":
// "$ref": "#/responses/repoArchivedError"
attach := getIssueCommentAttachmentSafeWrite(ctx)
if attach == nil {
return
}
form := web.GetForm(ctx).(*api.EditAttachmentOptions)
if form.Name != "" {
attach.Name = form.Name
}
if err := repo_model.UpdateAttachment(ctx, attach); err != nil {
ctx.Error(http.StatusInternalServerError, "UpdateAttachment", attach)
}
ctx.JSON(http.StatusCreated, convert.ToAPIAttachment(ctx.Repo.Repository, attach))
}
// DeleteIssueCommentAttachment delete a given attachment
func DeleteIssueCommentAttachment(ctx *context.APIContext) {
// swagger:operation DELETE /repos/{owner}/{repo}/issues/comments/{id}/assets/{attachment_id} issue issueDeleteIssueCommentAttachment
// ---
// summary: Delete a comment attachment
// produces:
// - application/json
// parameters:
// - name: owner
// in: path
// description: owner of the repo
// type: string
// required: true
// - name: repo
// in: path
// description: name of the repo
// type: string
// required: true
// - name: id
// in: path
// description: id of the comment
// type: integer
// format: int64
// required: true
// - name: attachment_id
// in: path
// description: id of the attachment to delete
// type: integer
// format: int64
// required: true
// responses:
// "204":
// "$ref": "#/responses/empty"
// "404":
// "$ref": "#/responses/error"
// "423":
// "$ref": "#/responses/repoArchivedError"
attach := getIssueCommentAttachmentSafeWrite(ctx)
if attach == nil {
return
}
if err := repo_model.DeleteAttachment(ctx, attach, true); err != nil {
ctx.Error(http.StatusInternalServerError, "DeleteAttachment", err)
return
}
ctx.Status(http.StatusNoContent)
}
func getIssueCommentAttachmentSafeWrite(ctx *context.APIContext) *repo_model.Attachment {
if !canUserWriteIssueCommentAttachment(ctx) {
return nil
}
return getIssueCommentAttachmentSafeRead(ctx)
}
func canUserWriteIssueCommentAttachment(ctx *context.APIContext) bool {
// ctx.Comment is assumed to be set in a safe way via a middleware
comment := ctx.Comment
canEditComment := ctx.IsSigned && (ctx.Doer.ID == comment.PosterID || ctx.IsUserRepoAdmin() || ctx.IsUserSiteAdmin()) && ctx.Repo.CanWriteIssuesOrPulls(comment.Issue.IsPull)
if !canEditComment {
ctx.Error(http.StatusForbidden, "", "user should have permission to edit comment")
return false
}
return true
}
func getIssueCommentAttachmentSafeRead(ctx *context.APIContext) *repo_model.Attachment {
// ctx.Comment is assumed to be set in a safe way via a middleware
comment := ctx.Comment
attachment, err := repo_model.GetAttachmentByID(ctx, ctx.ParamsInt64("attachment_id"))
if err != nil {
ctx.NotFoundOrServerError("GetAttachmentByID", repo_model.IsErrAttachmentNotExist, err)
return nil
}
if !attachmentBelongsToRepoOrComment(ctx, attachment, comment) {
return nil
}
return attachment
}
func attachmentBelongsToRepoOrComment(ctx *context.APIContext, attachment *repo_model.Attachment, comment *issues_model.Comment) bool {
if attachment.RepoID != ctx.Repo.Repository.ID {
log.Debug("Requested attachment[%d] does not belong to repo[%-v].", attachment.ID, ctx.Repo.Repository)
ctx.NotFound("no such attachment in repo")
return false
}
if attachment.IssueID == 0 || attachment.CommentID == 0 {
log.Debug("Requested attachment[%d] is not in a comment.", attachment.ID)
ctx.NotFound("no such attachment in comment")
return false
}
if comment != nil && attachment.CommentID != comment.ID {
log.Debug("Requested attachment[%d] does not belong to comment[%d].", attachment.ID, comment.ID)
ctx.NotFound("no such attachment in comment")
return false
}
return true
}