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// 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(ctx, 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)
defer baseCleanUp()
// it is still needed when rendering 500 page in a package handler
ctx := NewWebContext(base, renderer, nil)
ctx.Base.AppendContextValue(WebContextKey, ctx)
next.ServeHTTP(ctx.Resp, ctx.Req)
})
}
}
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