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Refactor internal API for git commands, use meaningful messages instead of "Internal Server Error" (#23687)

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# Why this PR comes

At first, I'd like to help users like #23636 (there are a lot)

The unclear "Internal Server Error" is quite anonying, scare users,
frustrate contributors, nobody knows what happens.

So, it's always good to provide meaningful messages to end users (of
course, do not leak sensitive information).

When I started working on the "response message to end users", I found
that the related code has a lot of technical debt. A lot of copy&paste
code, unclear fields and usages.

So I think it's good to make everything clear.

# Tech Backgrounds

Gitea has many sub-commands, some are used by admins, some are used by
SSH servers or Git Hooks. Many sub-commands use "internal API" to
communicate with Gitea web server.

Before, Gitea server always use `StatusCode + Json "err" field` to
return messages.

* The CLI sub-commands: they expect to show all error related messages
to site admin
* The Serv/Hook sub-commands (for git clients): they could only show
safe messages to end users, the error log could only be recorded by
"SSHLog" to Gitea web server.

In the old design, it assumes that:

* If the StatusCode is 500 (in some functions), then the "err" field is
error log, shouldn't be exposed to git client.
* If the StatusCode is 40x, then the "err" field could be exposed. And
some functions always read the "err" no matter what the StatusCode is.

The old code is not strict, and it's difficult to distinguish the
messages clearly and then output them correctly.

# This PR

To help to remove duplicate code and make everything clear, this PR
introduces `ResponseExtra` and `requestJSONResp`.

* `ResponseExtra` is a struct which contains "extra" information of a
internal API response, including StatusCode, UserMsg, Error
* `requestJSONResp` is a generic function which can be used for all
cases to help to simplify the calls.
* Remove all `map["err"]`, always use `private.Response{Err}` to
construct error messages.
* User messages and error messages are separated clearly, the `fail` and
`handleCliResponseExtra` will output correct messages.
* Replace all `Internal Server Error` messages with meaningful (still
safe) messages.

This PR saves more than 300 lines, while makes the git client messages
more clear.

Many gitea-serv/git-hook related essential functions are covered by
tests.

---------

Co-authored-by: delvh <dev.lh@web.de>
This commit is contained in:
wxiaoguang 2023-03-29 14:32:26 +08:00 • committed by GitHub
parent 79e7a6ec1e
commit f4538791f5
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GPG key ID: 4AEE18F83AFDEB23
30 changed files with 547 additions and 851 deletions
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141
routers/private/serv.go
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@ -1,7 +1,6 @@
// Copyright 2019 The Gitea Authors. All rights reserved.
// SPDX-License-Identifier: MIT
// Package private includes all internal routes. The package name internal is ideal but Golang is not allowed, so we use private as package name instead.
package private
import (
@ -29,7 +28,7 @@ func ServNoCommand(ctx *context.PrivateContext) {
keyID := ctx.ParamsInt64(":keyid")
if keyID <= 0 {
ctx.JSON(http.StatusBadRequest, private.Response{
Err: fmt.Sprintf("Bad key id: %d", keyID),
UserMsg: fmt.Sprintf("Bad key id: %d", keyID),
})
}
results := private.KeyAndOwner{}
@ -38,7 +37,7 @@ func ServNoCommand(ctx *context.PrivateContext) {
if err != nil {
if asymkey_model.IsErrKeyNotExist(err) {
ctx.JSON(http.StatusUnauthorized, private.Response{
Err: fmt.Sprintf("Cannot find key: %d", keyID),
UserMsg: fmt.Sprintf("Cannot find key: %d", keyID),
})
return
}
@ -55,7 +54,7 @@ func ServNoCommand(ctx *context.PrivateContext) {
if err != nil {
if user_model.IsErrUserNotExist(err) {
ctx.JSON(http.StatusUnauthorized, private.Response{
Err: fmt.Sprintf("Cannot find owner with id: %d for key: %d", key.OwnerID, keyID),
UserMsg: fmt.Sprintf("Cannot find owner with id: %d for key: %d", key.OwnerID, keyID),
})
return
}
@ -67,7 +66,7 @@ func ServNoCommand(ctx *context.PrivateContext) {
}
if !user.IsActive || user.ProhibitLogin {
ctx.JSON(http.StatusForbidden, private.Response{
Err: "Your account is disabled.",
UserMsg: "Your account is disabled.",
})
return
}
@ -113,23 +112,20 @@ func ServCommand(ctx *context.PrivateContext) {
if user_model.IsErrUserNotExist(err) {
// User is fetching/cloning a non-existent repository
log.Warn("Failed authentication attempt (cannot find repository: %s/%s) from %s", results.OwnerName, results.RepoName, ctx.RemoteAddr())
ctx.JSON(http.StatusNotFound, private.ErrServCommand{
Results: results,
Err: fmt.Sprintf("Cannot find repository: %s/%s", results.OwnerName, results.RepoName),
ctx.JSON(http.StatusNotFound, private.Response{
UserMsg: fmt.Sprintf("Cannot find repository: %s/%s", results.OwnerName, results.RepoName),
})
return
}
log.Error("Unable to get repository owner: %s/%s Error: %v", results.OwnerName, results.RepoName, err)
ctx.JSON(http.StatusForbidden, private.ErrServCommand{
Results: results,
Err: fmt.Sprintf("Unable to get repository owner: %s/%s %v", results.OwnerName, results.RepoName, err),
ctx.JSON(http.StatusForbidden, private.Response{
UserMsg: fmt.Sprintf("Unable to get repository owner: %s/%s %v", results.OwnerName, results.RepoName, err),
})
return
}
if !owner.IsOrganization() && !owner.IsActive {
ctx.JSON(http.StatusForbidden, private.ErrServCommand{
Results: results,
Err: "Repository cannot be accessed, you could retry it later",
ctx.JSON(http.StatusForbidden, private.Response{
UserMsg: "Repository cannot be accessed, you could retry it later",
})
return
}
@ -144,18 +140,16 @@ func ServCommand(ctx *context.PrivateContext) {
if verb == "git-upload-pack" {
// User is fetching/cloning a non-existent repository
log.Warn("Failed authentication attempt (cannot find repository: %s/%s) from %s", results.OwnerName, results.RepoName, ctx.RemoteAddr())
ctx.JSON(http.StatusNotFound, private.ErrServCommand{
Results: results,
Err: fmt.Sprintf("Cannot find repository: %s/%s", results.OwnerName, results.RepoName),
ctx.JSON(http.StatusNotFound, private.Response{
UserMsg: fmt.Sprintf("Cannot find repository: %s/%s", results.OwnerName, results.RepoName),
})
return
}
}
} else {
log.Error("Unable to get repository: %s/%s Error: %v", results.OwnerName, results.RepoName, err)
ctx.JSON(http.StatusInternalServerError, private.ErrServCommand{
Results: results,
Err: fmt.Sprintf("Unable to get repository: %s/%s %v", results.OwnerName, results.RepoName, err),
ctx.JSON(http.StatusInternalServerError, private.Response{
Err: fmt.Sprintf("Unable to get repository: %s/%s %v", results.OwnerName, results.RepoName, err),
})
return
}
@ -167,26 +161,23 @@ func ServCommand(ctx *context.PrivateContext) {
results.RepoID = repo.ID
if repo.IsBeingCreated() {
ctx.JSON(http.StatusInternalServerError, private.ErrServCommand{
Results: results,
Err: "Repository is being created, you could retry after it finished",
ctx.JSON(http.StatusInternalServerError, private.Response{
Err: "Repository is being created, you could retry after it finished",
})
return
}
if repo.IsBroken() {
ctx.JSON(http.StatusInternalServerError, private.ErrServCommand{
Results: results,
Err: "Repository is in a broken state",
ctx.JSON(http.StatusInternalServerError, private.Response{
Err: "Repository is in a broken state",
})
return
}
// We can shortcut at this point if the repo is a mirror
if mode > perm.AccessModeRead && repo.IsMirror {
ctx.JSON(http.StatusForbidden, private.ErrServCommand{
Results: results,
Err: fmt.Sprintf("Mirror Repository %s/%s is read-only", results.OwnerName, results.RepoName),
ctx.JSON(http.StatusForbidden, private.Response{
UserMsg: fmt.Sprintf("Mirror Repository %s/%s is read-only", results.OwnerName, results.RepoName),
})
return
}
@ -196,16 +187,14 @@ func ServCommand(ctx *context.PrivateContext) {
key, err := asymkey_model.GetPublicKeyByID(keyID)
if err != nil {
if asymkey_model.IsErrKeyNotExist(err) {
ctx.JSON(http.StatusNotFound, private.ErrServCommand{
Results: results,
Err: fmt.Sprintf("Cannot find key: %d", keyID),
ctx.JSON(http.StatusNotFound, private.Response{
UserMsg: fmt.Sprintf("Cannot find key: %d", keyID),
})
return
}
log.Error("Unable to get public key: %d Error: %v", keyID, err)
ctx.JSON(http.StatusInternalServerError, private.ErrServCommand{
Results: results,
Err: fmt.Sprintf("Unable to get key: %d Error: %v", keyID, err),
ctx.JSON(http.StatusInternalServerError, private.Response{
Err: fmt.Sprintf("Unable to get key: %d Error: %v", keyID, err),
})
return
}
@ -215,9 +204,8 @@ func ServCommand(ctx *context.PrivateContext) {
// If repo doesn't exist, deploy key doesn't make sense
if !repoExist && key.Type == asymkey_model.KeyTypeDeploy {
ctx.JSON(http.StatusNotFound, private.ErrServCommand{
Results: results,
Err: fmt.Sprintf("Cannot find repository %s/%s", results.OwnerName, results.RepoName),
ctx.JSON(http.StatusNotFound, private.Response{
UserMsg: fmt.Sprintf("Cannot find repository %s/%s", results.OwnerName, results.RepoName),
})
return
}
@ -232,16 +220,14 @@ func ServCommand(ctx *context.PrivateContext) {
deployKey, err = asymkey_model.GetDeployKeyByRepo(ctx, key.ID, repo.ID)
if err != nil {
if asymkey_model.IsErrDeployKeyNotExist(err) {
ctx.JSON(http.StatusNotFound, private.ErrServCommand{
Results: results,
Err: fmt.Sprintf("Public (Deploy) Key: %d:%s is not authorized to %s %s/%s.", key.ID, key.Name, modeString, results.OwnerName, results.RepoName),
ctx.JSON(http.StatusNotFound, private.Response{
UserMsg: fmt.Sprintf("Public (Deploy) Key: %d:%s is not authorized to %s %s/%s.", key.ID, key.Name, modeString, results.OwnerName, results.RepoName),
})
return
}
log.Error("Unable to get deploy for public (deploy) key: %d in %-v Error: %v", key.ID, repo, err)
ctx.JSON(http.StatusInternalServerError, private.ErrServCommand{
Results: results,
Err: fmt.Sprintf("Unable to get Deploy Key for Public Key: %d:%s in %s/%s.", key.ID, key.Name, results.OwnerName, results.RepoName),
ctx.JSON(http.StatusInternalServerError, private.Response{
Err: fmt.Sprintf("Unable to get Deploy Key for Public Key: %d:%s in %s/%s.", key.ID, key.Name, results.OwnerName, results.RepoName),
})
return
}
@ -262,23 +248,21 @@ func ServCommand(ctx *context.PrivateContext) {
user, err = user_model.GetUserByID(ctx, key.OwnerID)
if err != nil {
if user_model.IsErrUserNotExist(err) {
ctx.JSON(http.StatusUnauthorized, private.ErrServCommand{
Results: results,
Err: fmt.Sprintf("Public Key: %d:%s owner %d does not exist.", key.ID, key.Name, key.OwnerID),
ctx.JSON(http.StatusUnauthorized, private.Response{
UserMsg: fmt.Sprintf("Public Key: %d:%s owner %d does not exist.", key.ID, key.Name, key.OwnerID),
})
return
}
log.Error("Unable to get owner: %d for public key: %d:%s Error: %v", key.OwnerID, key.ID, key.Name, err)
ctx.JSON(http.StatusInternalServerError, private.ErrServCommand{
Results: results,
Err: fmt.Sprintf("Unable to get Owner: %d for Deploy Key: %d:%s in %s/%s.", key.OwnerID, key.ID, key.Name, ownerName, repoName),
ctx.JSON(http.StatusInternalServerError, private.Response{
Err: fmt.Sprintf("Unable to get Owner: %d for Deploy Key: %d:%s in %s/%s.", key.OwnerID, key.ID, key.Name, ownerName, repoName),
})
return
}
if !user.IsActive || user.ProhibitLogin {
ctx.JSON(http.StatusForbidden, private.Response{
Err: "Your account is disabled.",
UserMsg: "Your account is disabled.",
})
return
}
@ -291,9 +275,8 @@ func ServCommand(ctx *context.PrivateContext) {
// Don't allow pushing if the repo is archived
if repoExist && mode > perm.AccessModeRead && repo.IsArchived {
ctx.JSON(http.StatusUnauthorized, private.ErrServCommand{
Results: results,
Err: fmt.Sprintf("Repo: %s/%s is archived.", results.OwnerName, results.RepoName),
ctx.JSON(http.StatusUnauthorized, private.Response{
UserMsg: fmt.Sprintf("Repo: %s/%s is archived.", results.OwnerName, results.RepoName),
})
return
}
@ -307,9 +290,8 @@ func ServCommand(ctx *context.PrivateContext) {
setting.Service.RequireSignInView) {
if key.Type == asymkey_model.KeyTypeDeploy {
if deployKey.Mode < mode {
ctx.JSON(http.StatusUnauthorized, private.ErrServCommand{
Results: results,
Err: fmt.Sprintf("Deploy Key: %d:%s is not authorized to %s %s/%s.", key.ID, key.Name, modeString, results.OwnerName, results.RepoName),
ctx.JSON(http.StatusUnauthorized, private.Response{
UserMsg: fmt.Sprintf("Deploy Key: %d:%s is not authorized to %s %s/%s.", key.ID, key.Name, modeString, results.OwnerName, results.RepoName),
})
return
}
@ -322,9 +304,8 @@ func ServCommand(ctx *context.PrivateContext) {
perm, err := access_model.GetUserRepoPermission(ctx, repo, user)
if err != nil {
log.Error("Unable to get permissions for %-v with key %d in %-v Error: %v", user, key.ID, repo, err)
ctx.JSON(http.StatusInternalServerError, private.ErrServCommand{
Results: results,
Err: fmt.Sprintf("Unable to get permissions for user %d:%s with key %d in %s/%s Error: %v", user.ID, user.Name, key.ID, results.OwnerName, results.RepoName, err),
ctx.JSON(http.StatusInternalServerError, private.Response{
Err: fmt.Sprintf("Unable to get permissions for user %d:%s with key %d in %s/%s Error: %v", user.ID, user.Name, key.ID, results.OwnerName, results.RepoName, err),
})
return
}
@ -333,9 +314,8 @@ func ServCommand(ctx *context.PrivateContext) {
if userMode < mode {
log.Warn("Failed authentication attempt for %s with key %s (not authorized to %s %s/%s) from %s", user.Name, key.Name, modeString, ownerName, repoName, ctx.RemoteAddr())
ctx.JSON(http.StatusUnauthorized, private.ErrServCommand{
Results: results,
Err: fmt.Sprintf("User: %d:%s with Key: %d:%s is not authorized to %s %s/%s.", user.ID, user.Name, key.ID, key.Name, modeString, ownerName, repoName),
ctx.JSON(http.StatusUnauthorized, private.Response{
UserMsg: fmt.Sprintf("User: %d:%s with Key: %d:%s is not authorized to %s %s/%s.", user.ID, user.Name, key.ID, key.Name, modeString, ownerName, repoName),
})
return
}
@ -346,24 +326,21 @@ func ServCommand(ctx *context.PrivateContext) {
if !repoExist {
owner, err := user_model.GetUserByName(ctx, ownerName)
if err != nil {
ctx.JSON(http.StatusInternalServerError, private.ErrServCommand{
Results: results,
Err: fmt.Sprintf("Unable to get owner: %s %v", results.OwnerName, err),
ctx.JSON(http.StatusInternalServerError, private.Response{
Err: fmt.Sprintf("Unable to get owner: %s %v", results.OwnerName, err),
})
return
}
if owner.IsOrganization() && !setting.Repository.EnablePushCreateOrg {
ctx.JSON(http.StatusForbidden, private.ErrServCommand{
Results: results,
Err: "Push to create is not enabled for organizations.",
ctx.JSON(http.StatusForbidden, private.Response{
UserMsg: "Push to create is not enabled for organizations.",
})
return
}
if !owner.IsOrganization() && !setting.Repository.EnablePushCreateUser {
ctx.JSON(http.StatusForbidden, private.ErrServCommand{
Results: results,
Err: "Push to create is not enabled for users.",
ctx.JSON(http.StatusForbidden, private.Response{
UserMsg: "Push to create is not enabled for users.",
})
return
}
@ -371,9 +348,8 @@ func ServCommand(ctx *context.PrivateContext) {
repo, err = repo_service.PushCreateRepo(ctx, user, owner, results.RepoName)
if err != nil {
log.Error("pushCreateRepo: %v", err)
ctx.JSON(http.StatusNotFound, private.ErrServCommand{
Results: results,
Err: fmt.Sprintf("Cannot find repository: %s/%s", results.OwnerName, results.RepoName),
ctx.JSON(http.StatusNotFound, private.Response{
UserMsg: fmt.Sprintf("Cannot find repository: %s/%s", results.OwnerName, results.RepoName),
})
return
}
@ -384,16 +360,14 @@ func ServCommand(ctx *context.PrivateContext) {
// Ensure the wiki is enabled before we allow access to it
if _, err := repo.GetUnit(ctx, unit.TypeWiki); err != nil {
if repo_model.IsErrUnitTypeNotExist(err) {
ctx.JSON(http.StatusForbidden, private.ErrServCommand{
Results: results,
Err: "repository wiki is disabled",
ctx.JSON(http.StatusForbidden, private.Response{
UserMsg: "repository wiki is disabled",
})
return
}
log.Error("Failed to get the wiki unit in %-v Error: %v", repo, err)
ctx.JSON(http.StatusInternalServerError, private.ErrServCommand{
Results: results,
Err: fmt.Sprintf("Failed to get the wiki unit in %s/%s Error: %v", ownerName, repoName, err),
ctx.JSON(http.StatusInternalServerError, private.Response{
Err: fmt.Sprintf("Failed to get the wiki unit in %s/%s Error: %v", ownerName, repoName, err),
})
return
}
@ -401,9 +375,8 @@ func ServCommand(ctx *context.PrivateContext) {
// Finally if we're trying to touch the wiki we should init it
if err = wiki_service.InitWiki(ctx, repo); err != nil {
log.Error("Failed to initialize the wiki in %-v Error: %v", repo, err)
ctx.JSON(http.StatusInternalServerError, private.ErrServCommand{
Results: results,
Err: fmt.Sprintf("Failed to initialize the wiki in %s/%s Error: %v", ownerName, repoName, err),
ctx.JSON(http.StatusInternalServerError, private.Response{
Err: fmt.Sprintf("Failed to initialize the wiki in %s/%s Error: %v", ownerName, repoName, err),
})
return
}