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Fix #13485. Co-authored-by: delvh <dev.lh@web.de> Co-authored-by: Lauris BH <lauris@nix.lv> Co-authored-by: Lunny Xiao <xiaolunwen@gmail.com>
405 lines
12 KiB
Go
405 lines
12 KiB
Go
// Copyright 2016 The Gogs Authors. All rights reserved.
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// Copyright 2019 The Gitea Authors. All rights reserved.
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// SPDX-License-Identifier: MIT
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package context
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import (
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"context"
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"fmt"
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"net/http"
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"net/url"
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"strings"
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"code.gitea.io/gitea/models/auth"
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repo_model "code.gitea.io/gitea/models/repo"
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"code.gitea.io/gitea/modules/cache"
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"code.gitea.io/gitea/modules/git"
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"code.gitea.io/gitea/modules/httpcache"
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"code.gitea.io/gitea/modules/log"
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"code.gitea.io/gitea/modules/setting"
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"code.gitea.io/gitea/modules/web/middleware"
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auth_service "code.gitea.io/gitea/services/auth"
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)
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// APIContext is a specific context for API service
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type APIContext struct {
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*Context
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Org *APIOrganization
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}
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// Currently, we have the following common fields in error response:
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// * message: the message for end users (it shouldn't be used for error type detection)
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// if we need to indicate some errors, we should introduce some new fields like ErrorCode or ErrorType
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// * url: the swagger document URL
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// APIError is error format response
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// swagger:response error
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type APIError struct {
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Message string `json:"message"`
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URL string `json:"url"`
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}
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// APIValidationError is error format response related to input validation
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// swagger:response validationError
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type APIValidationError struct {
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Message string `json:"message"`
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URL string `json:"url"`
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}
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// APIInvalidTopicsError is error format response to invalid topics
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// swagger:response invalidTopicsError
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type APIInvalidTopicsError struct {
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Message string `json:"message"`
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InvalidTopics []string `json:"invalidTopics"`
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}
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// APIEmpty is an empty response
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// swagger:response empty
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type APIEmpty struct{}
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// APIForbiddenError is a forbidden error response
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// swagger:response forbidden
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type APIForbiddenError struct {
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APIError
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}
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// APINotFound is a not found empty response
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// swagger:response notFound
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type APINotFound struct{}
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// APIConflict is a conflict empty response
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// swagger:response conflict
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type APIConflict struct{}
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// APIRedirect is a redirect response
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// swagger:response redirect
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type APIRedirect struct{}
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// APIString is a string response
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// swagger:response string
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type APIString string
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// ServerError responds with error message, status is 500
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func (ctx *APIContext) ServerError(title string, err error) {
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ctx.Error(http.StatusInternalServerError, title, err)
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}
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// Error responds with an error message to client with given obj as the message.
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// If status is 500, also it prints error to log.
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func (ctx *APIContext) Error(status int, title string, obj interface{}) {
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var message string
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if err, ok := obj.(error); ok {
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message = err.Error()
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} else {
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message = fmt.Sprintf("%s", obj)
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}
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if status == http.StatusInternalServerError {
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log.ErrorWithSkip(1, "%s: %s", title, message)
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if setting.IsProd && !(ctx.Doer != nil && ctx.Doer.IsAdmin) {
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message = ""
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}
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}
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ctx.JSON(status, APIError{
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Message: message,
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URL: setting.API.SwaggerURL,
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})
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}
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// InternalServerError responds with an error message to the client with the error as a message
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// and the file and line of the caller.
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func (ctx *APIContext) InternalServerError(err error) {
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log.ErrorWithSkip(1, "InternalServerError: %v", err)
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var message string
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if !setting.IsProd || (ctx.Doer != nil && ctx.Doer.IsAdmin) {
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message = err.Error()
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}
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ctx.JSON(http.StatusInternalServerError, APIError{
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Message: message,
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URL: setting.API.SwaggerURL,
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})
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}
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type apiContextKeyType struct{}
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var apiContextKey = apiContextKeyType{}
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// WithAPIContext set up api context in request
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func WithAPIContext(req *http.Request, ctx *APIContext) *http.Request {
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return req.WithContext(context.WithValue(req.Context(), apiContextKey, ctx))
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}
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// GetAPIContext returns a context for API routes
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func GetAPIContext(req *http.Request) *APIContext {
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return req.Context().Value(apiContextKey).(*APIContext)
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}
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func genAPILinks(curURL *url.URL, total, pageSize, curPage int) []string {
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page := NewPagination(total, pageSize, curPage, 0)
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paginater := page.Paginater
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links := make([]string, 0, 4)
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if paginater.HasNext() {
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u := *curURL
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queries := u.Query()
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queries.Set("page", fmt.Sprintf("%d", paginater.Next()))
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u.RawQuery = queries.Encode()
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links = append(links, fmt.Sprintf("<%s%s>; rel=\"next\"", setting.AppURL, u.RequestURI()[1:]))
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}
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if !paginater.IsLast() {
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u := *curURL
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queries := u.Query()
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queries.Set("page", fmt.Sprintf("%d", paginater.TotalPages()))
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u.RawQuery = queries.Encode()
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links = append(links, fmt.Sprintf("<%s%s>; rel=\"last\"", setting.AppURL, u.RequestURI()[1:]))
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}
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if !paginater.IsFirst() {
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u := *curURL
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queries := u.Query()
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queries.Set("page", "1")
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u.RawQuery = queries.Encode()
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links = append(links, fmt.Sprintf("<%s%s>; rel=\"first\"", setting.AppURL, u.RequestURI()[1:]))
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}
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if paginater.HasPrevious() {
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u := *curURL
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queries := u.Query()
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queries.Set("page", fmt.Sprintf("%d", paginater.Previous()))
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u.RawQuery = queries.Encode()
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links = append(links, fmt.Sprintf("<%s%s>; rel=\"prev\"", setting.AppURL, u.RequestURI()[1:]))
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}
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return links
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}
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// SetLinkHeader sets pagination link header by given total number and page size.
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func (ctx *APIContext) SetLinkHeader(total, pageSize int) {
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links := genAPILinks(ctx.Req.URL, total, pageSize, ctx.FormInt("page"))
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if len(links) > 0 {
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ctx.RespHeader().Set("Link", strings.Join(links, ","))
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ctx.AppendAccessControlExposeHeaders("Link")
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}
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}
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// CheckForOTP validates OTP
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func (ctx *APIContext) CheckForOTP() {
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if skip, ok := ctx.Data["SkipLocalTwoFA"]; ok && skip.(bool) {
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return // Skip 2FA
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}
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otpHeader := ctx.Req.Header.Get("X-Gitea-OTP")
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twofa, err := auth.GetTwoFactorByUID(ctx.Context.Doer.ID)
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if err != nil {
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if auth.IsErrTwoFactorNotEnrolled(err) {
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return // No 2FA enrollment for this user
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}
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ctx.Context.Error(http.StatusInternalServerError)
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return
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}
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ok, err := twofa.ValidateTOTP(otpHeader)
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if err != nil {
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ctx.Context.Error(http.StatusInternalServerError)
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return
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}
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if !ok {
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ctx.Context.Error(http.StatusUnauthorized)
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return
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}
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}
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// APIAuth converts auth_service.Auth as a middleware
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func APIAuth(authMethod auth_service.Method) func(*APIContext) {
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return func(ctx *APIContext) {
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// Get user from session if logged in.
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ctx.Doer = authMethod.Verify(ctx.Req, ctx.Resp, ctx, ctx.Session)
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if ctx.Doer != nil {
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if ctx.Locale.Language() != ctx.Doer.Language {
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ctx.Locale = middleware.Locale(ctx.Resp, ctx.Req)
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}
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ctx.IsBasicAuth = ctx.Data["AuthedMethod"].(string) == auth_service.BasicMethodName
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ctx.IsSigned = true
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ctx.Data["IsSigned"] = ctx.IsSigned
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ctx.Data["SignedUser"] = ctx.Doer
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ctx.Data["SignedUserID"] = ctx.Doer.ID
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ctx.Data["SignedUserName"] = ctx.Doer.Name
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ctx.Data["IsAdmin"] = ctx.Doer.IsAdmin
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} else {
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ctx.Data["SignedUserID"] = int64(0)
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ctx.Data["SignedUserName"] = ""
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}
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}
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}
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// APIContexter returns apicontext as middleware
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func APIContexter() func(http.Handler) http.Handler {
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return func(next http.Handler) http.Handler {
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return http.HandlerFunc(func(w http.ResponseWriter, req *http.Request) {
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locale := middleware.Locale(w, req)
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ctx := APIContext{
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Context: &Context{
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Resp: NewResponse(w),
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Data: map[string]interface{}{},
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Locale: locale,
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Cache: cache.GetCache(),
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Repo: &Repository{
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PullRequest: &PullRequest{},
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},
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Org: &Organization{},
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},
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Org: &APIOrganization{},
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}
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defer ctx.Close()
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ctx.Req = WithAPIContext(WithContext(req, ctx.Context), &ctx)
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// If request sends files, parse them here otherwise the Query() can't be parsed and the CsrfToken will be invalid.
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if ctx.Req.Method == "POST" && strings.Contains(ctx.Req.Header.Get("Content-Type"), "multipart/form-data") {
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if err := ctx.Req.ParseMultipartForm(setting.Attachment.MaxSize << 20); err != nil && !strings.Contains(err.Error(), "EOF") { // 32MB max size
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ctx.InternalServerError(err)
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return
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}
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}
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httpcache.AddCacheControlToHeader(ctx.Resp.Header(), 0, "no-transform")
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ctx.Resp.Header().Set(`X-Frame-Options`, setting.CORSConfig.XFrameOptions)
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ctx.Data["Context"] = &ctx
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next.ServeHTTP(ctx.Resp, ctx.Req)
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// Handle adding signedUserName to the context for the AccessLogger
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usernameInterface := ctx.Data["SignedUserName"]
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identityPtrInterface := ctx.Req.Context().Value(signedUserNameStringPointerKey)
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if usernameInterface != nil && identityPtrInterface != nil {
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username := usernameInterface.(string)
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identityPtr := identityPtrInterface.(*string)
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if identityPtr != nil && username != "" {
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*identityPtr = username
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}
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}
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})
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}
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}
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// NotFound handles 404s for APIContext
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// String will replace message, errors will be added to a slice
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func (ctx *APIContext) NotFound(objs ...interface{}) {
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message := ctx.Tr("error.not_found")
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var errors []string
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for _, obj := range objs {
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// Ignore nil
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if obj == nil {
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continue
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}
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if err, ok := obj.(error); ok {
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errors = append(errors, err.Error())
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} else {
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message = obj.(string)
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}
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}
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ctx.JSON(http.StatusNotFound, map[string]interface{}{
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"message": message,
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"url": setting.API.SwaggerURL,
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"errors": errors,
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})
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}
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// ReferencesGitRepo injects the GitRepo into the Context
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// you can optional skip the IsEmpty check
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func ReferencesGitRepo(allowEmpty ...bool) func(ctx *APIContext) (cancel context.CancelFunc) {
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return func(ctx *APIContext) (cancel context.CancelFunc) {
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// Empty repository does not have reference information.
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if ctx.Repo.Repository.IsEmpty && !(len(allowEmpty) != 0 && allowEmpty[0]) {
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return
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}
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// For API calls.
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if ctx.Repo.GitRepo == nil {
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repoPath := repo_model.RepoPath(ctx.Repo.Owner.Name, ctx.Repo.Repository.Name)
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gitRepo, err := git.OpenRepository(ctx, repoPath)
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if err != nil {
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ctx.Error(http.StatusInternalServerError, "RepoRef Invalid repo "+repoPath, err)
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return
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}
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ctx.Repo.GitRepo = gitRepo
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// We opened it, we should close it
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return func() {
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// If it's been set to nil then assume someone else has closed it.
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if ctx.Repo.GitRepo != nil {
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ctx.Repo.GitRepo.Close()
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}
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}
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}
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return cancel
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}
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}
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// RepoRefForAPI handles repository reference names when the ref name is not explicitly given
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func RepoRefForAPI(next http.Handler) http.Handler {
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return http.HandlerFunc(func(w http.ResponseWriter, req *http.Request) {
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ctx := GetAPIContext(req)
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if ctx.Repo.GitRepo == nil {
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ctx.InternalServerError(fmt.Errorf("no open git repo"))
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return
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}
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if ref := ctx.FormTrim("ref"); len(ref) > 0 {
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commit, err := ctx.Repo.GitRepo.GetCommit(ref)
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if err != nil {
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if git.IsErrNotExist(err) {
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ctx.NotFound()
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} else {
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ctx.Error(http.StatusInternalServerError, "GetBlobByPath", err)
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}
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return
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}
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ctx.Repo.Commit = commit
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ctx.Repo.TreePath = ctx.Params("*")
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return
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}
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var err error
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refName := getRefName(ctx.Context, RepoRefAny)
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if ctx.Repo.GitRepo.IsBranchExist(refName) {
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ctx.Repo.Commit, err = ctx.Repo.GitRepo.GetBranchCommit(refName)
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if err != nil {
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ctx.InternalServerError(err)
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return
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}
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ctx.Repo.CommitID = ctx.Repo.Commit.ID.String()
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} else if ctx.Repo.GitRepo.IsTagExist(refName) {
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ctx.Repo.Commit, err = ctx.Repo.GitRepo.GetTagCommit(refName)
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if err != nil {
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ctx.InternalServerError(err)
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return
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}
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ctx.Repo.CommitID = ctx.Repo.Commit.ID.String()
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} else if len(refName) == git.SHAFullLength {
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ctx.Repo.CommitID = refName
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ctx.Repo.Commit, err = ctx.Repo.GitRepo.GetCommit(refName)
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if err != nil {
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ctx.NotFound("GetCommit", err)
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return
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}
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} else {
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ctx.NotFound(fmt.Errorf("not exist: '%s'", ctx.Params("*")))
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return
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}
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next.ServeHTTP(w, req)
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})
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}
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