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forgejo/modules/context/package.go
Giteabot 372b622c2b
Revert package access change from #23879 (#25707) (#25785)
Backport #25707 by @KN4CK3R

Fixes (?) #25538
Fixes https://codeberg.org/forgejo/forgejo/issues/972

Regression #23879

#23879 introduced a change which prevents read access to packages if a
user is not a member of an organization.

That PR also contained a change which disallows package access if the
team unit is configured with "no access" for packages. I don't think
this change makes sense (at the moment). It may be relevant for private
orgs. But for public or limited orgs that's useless because an
unauthorized user would have more access rights than the team member.
This PR restores the old behaviour "If a user has read access for an
owner, they can read packages".

Co-authored-by: KN4CK3R <admin@oldschoolhack.me>
2023-07-09 21:00:42 +00:00

167 lines
5.1 KiB
Go

// Copyright 2021 The Gitea Authors. All rights reserved.
// SPDX-License-Identifier: MIT
package context
import (
"fmt"
"net/http"
"code.gitea.io/gitea/models/organization"
packages_model "code.gitea.io/gitea/models/packages"
"code.gitea.io/gitea/models/perm"
"code.gitea.io/gitea/models/unit"
user_model "code.gitea.io/gitea/models/user"
"code.gitea.io/gitea/modules/setting"
"code.gitea.io/gitea/modules/structs"
"code.gitea.io/gitea/modules/templates"
)
// Package contains owner, access mode and optional the package descriptor
type Package struct {
Owner *user_model.User
AccessMode perm.AccessMode
Descriptor *packages_model.PackageDescriptor
}
type packageAssignmentCtx struct {
*Base
Doer *user_model.User
ContextUser *user_model.User
}
// PackageAssignment returns a middleware to handle Context.Package assignment
func PackageAssignment() func(ctx *Context) {
return func(ctx *Context) {
errorFn := func(status int, title string, obj any) {
err, ok := obj.(error)
if !ok {
err = fmt.Errorf("%s", obj)
}
if status == http.StatusNotFound {
ctx.NotFound(title, err)
} else {
ctx.ServerError(title, err)
}
}
paCtx := &packageAssignmentCtx{Base: ctx.Base, Doer: ctx.Doer, ContextUser: ctx.ContextUser}
ctx.Package = packageAssignment(paCtx, errorFn)
}
}
// PackageAssignmentAPI returns a middleware to handle Context.Package assignment
func PackageAssignmentAPI() func(ctx *APIContext) {
return func(ctx *APIContext) {
paCtx := &packageAssignmentCtx{Base: ctx.Base, Doer: ctx.Doer, ContextUser: ctx.ContextUser}
ctx.Package = packageAssignment(paCtx, ctx.Error)
}
}
func packageAssignment(ctx *packageAssignmentCtx, errCb func(int, string, any)) *Package {
pkg := &Package{
Owner: ctx.ContextUser,
}
var err error
pkg.AccessMode, err = determineAccessMode(ctx.Base, pkg, ctx.Doer)
if err != nil {
errCb(http.StatusInternalServerError, "determineAccessMode", err)
return pkg
}
packageType := ctx.Params("type")
name := ctx.Params("name")
version := ctx.Params("version")
if packageType != "" && name != "" && version != "" {
pv, err := packages_model.GetVersionByNameAndVersion(ctx, pkg.Owner.ID, packages_model.Type(packageType), name, version)
if err != nil {
if err == packages_model.ErrPackageNotExist {
errCb(http.StatusNotFound, "GetVersionByNameAndVersion", err)
} else {
errCb(http.StatusInternalServerError, "GetVersionByNameAndVersion", err)
}
return pkg
}
pkg.Descriptor, err = packages_model.GetPackageDescriptor(ctx, pv)
if err != nil {
errCb(http.StatusInternalServerError, "GetPackageDescriptor", err)
return pkg
}
}
return pkg
}
func determineAccessMode(ctx *Base, pkg *Package, doer *user_model.User) (perm.AccessMode, error) {
if setting.Service.RequireSignInView && doer == nil {
return perm.AccessModeNone, nil
}
if doer != nil && !doer.IsGhost() && (!doer.IsActive || doer.ProhibitLogin) {
return perm.AccessModeNone, nil
}
// TODO: ActionUser permission check
accessMode := perm.AccessModeNone
if pkg.Owner.IsOrganization() {
org := organization.OrgFromUser(pkg.Owner)
if doer != nil && !doer.IsGhost() {
// 1. If user is logged in, check all team packages permissions
var err error
accessMode, err = org.GetOrgUserMaxAuthorizeLevel(doer.ID)
if err != nil {
return accessMode, err
}
// If access mode is less than write check every team for more permissions
// The minimum possible access mode is read for org members
if accessMode < perm.AccessModeWrite {
teams, err := organization.GetUserOrgTeams(ctx, org.ID, doer.ID)
if err != nil {
return accessMode, err
}
for _, t := range teams {
perm := t.UnitAccessMode(ctx, unit.TypePackages)
if accessMode < perm {
accessMode = perm
}
}
}
}
if accessMode == perm.AccessModeNone && organization.HasOrgOrUserVisible(ctx, pkg.Owner, doer) {
// 2. If user is unauthorized or no org member, check if org is visible
accessMode = perm.AccessModeRead
}
} else {
if doer != nil && !doer.IsGhost() {
// 1. Check if user is package owner
if doer.ID == pkg.Owner.ID {
accessMode = perm.AccessModeOwner
} else if pkg.Owner.Visibility == structs.VisibleTypePublic || pkg.Owner.Visibility == structs.VisibleTypeLimited { // 2. Check if package owner is public or limited
accessMode = perm.AccessModeRead
}
} else if pkg.Owner.Visibility == structs.VisibleTypePublic { // 3. Check if package owner is public
accessMode = perm.AccessModeRead
}
}
return accessMode, nil
}
// PackageContexter initializes a package context for a request.
func PackageContexter() func(next http.Handler) http.Handler {
renderer := templates.HTMLRenderer()
return func(next http.Handler) http.Handler {
return http.HandlerFunc(func(resp http.ResponseWriter, req *http.Request) {
base, baseCleanUp := NewBaseContext(resp, req)
ctx := &Context{
Base: base,
Render: renderer, // it is still needed when rendering 500 page in a package handler
}
defer baseCleanUp()
ctx.Base.AppendContextValue(WebContextKey, ctx)
next.ServeHTTP(ctx.Resp, ctx.Req)
})
}
}