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forgejo/modules/private/hook.go
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Refactor internal API for git commands, use meaningful messages instead of "Internal Server Error" (#23687)
# 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>
2023-03-29 14:32:26 +08:00

141 lines
4.7 KiB
Go

// Copyright 2019 The Gitea Authors. All rights reserved.
// SPDX-License-Identifier: MIT
package private
import (
"context"
"fmt"
"net/url"
"strconv"
"time"
"code.gitea.io/gitea/modules/setting"
)
// Git environment variables
const (
GitAlternativeObjectDirectories = "GIT_ALTERNATE_OBJECT_DIRECTORIES"
GitObjectDirectory = "GIT_OBJECT_DIRECTORY"
GitQuarantinePath = "GIT_QUARANTINE_PATH"
GitPushOptionCount = "GIT_PUSH_OPTION_COUNT"
)
// GitPushOptions is a wrapper around a map[string]string
type GitPushOptions map[string]string
// GitPushOptions keys
const (
GitPushOptionRepoPrivate = "repo.private"
GitPushOptionRepoTemplate = "repo.template"
)
// Bool checks for a key in the map and parses as a boolean
func (g GitPushOptions) Bool(key string, def bool) bool {
if val, ok := g[key]; ok {
if b, err := strconv.ParseBool(val); err == nil {
return b
}
}
return def
}
// HookOptions represents the options for the Hook calls
type HookOptions struct {
OldCommitIDs []string
NewCommitIDs []string
RefFullNames []string
UserID int64
UserName string
GitObjectDirectory string
GitAlternativeObjectDirectories string
GitQuarantinePath string
GitPushOptions GitPushOptions
PullRequestID int64
DeployKeyID int64 // if the pusher is a DeployKey, then UserID is the repo's org user.
IsWiki bool
ActionPerm int
}
// SSHLogOption ssh log options
type SSHLogOption struct {
IsError bool
Message string
}
// HookPostReceiveResult represents an individual result from PostReceive
type HookPostReceiveResult struct {
Results []HookPostReceiveBranchResult
RepoWasEmpty bool
Err string
}
// HookPostReceiveBranchResult represents an individual branch result from PostReceive
type HookPostReceiveBranchResult struct {
Message bool
Create bool
Branch string
URL string
}
// HookProcReceiveResult represents an individual result from ProcReceive
type HookProcReceiveResult struct {
Results []HookProcReceiveRefResult
Err string
}
// HookProcReceiveRefResult represents an individual result from ProcReceive
type HookProcReceiveRefResult struct {
OldOID string
NewOID string
Ref string
OriginalRef string
IsForcePush bool
IsNotMatched bool
Err string
}
// HookPreReceive check whether the provided commits are allowed
func HookPreReceive(ctx context.Context, ownerName, repoName string, opts HookOptions) ResponseExtra {
reqURL := setting.LocalURL + fmt.Sprintf("api/internal/hook/pre-receive/%s/%s", url.PathEscape(ownerName), url.PathEscape(repoName))
req := newInternalRequest(ctx, reqURL, "POST", opts)
req.SetReadWriteTimeout(time.Duration(60+len(opts.OldCommitIDs)) * time.Second)
_, extra := requestJSONResp(req, &responseText{})
return extra
}
// HookPostReceive updates services and users
func HookPostReceive(ctx context.Context, ownerName, repoName string, opts HookOptions) (*HookPostReceiveResult, ResponseExtra) {
reqURL := setting.LocalURL + fmt.Sprintf("api/internal/hook/post-receive/%s/%s", url.PathEscape(ownerName), url.PathEscape(repoName))
req := newInternalRequest(ctx, reqURL, "POST", opts)
req.SetReadWriteTimeout(time.Duration(60+len(opts.OldCommitIDs)) * time.Second)
return requestJSONResp(req, &HookPostReceiveResult{})
}
// HookProcReceive proc-receive hook
func HookProcReceive(ctx context.Context, ownerName, repoName string, opts HookOptions) (*HookProcReceiveResult, ResponseExtra) {
reqURL := setting.LocalURL + fmt.Sprintf("api/internal/hook/proc-receive/%s/%s", url.PathEscape(ownerName), url.PathEscape(repoName))
req := newInternalRequest(ctx, reqURL, "POST", opts)
req.SetReadWriteTimeout(time.Duration(60+len(opts.OldCommitIDs)) * time.Second)
return requestJSONResp(req, &HookProcReceiveResult{})
}
// SetDefaultBranch will set the default branch to the provided branch for the provided repository
func SetDefaultBranch(ctx context.Context, ownerName, repoName, branch string) ResponseExtra {
reqURL := setting.LocalURL + fmt.Sprintf("api/internal/hook/set-default-branch/%s/%s/%s",
url.PathEscape(ownerName),
url.PathEscape(repoName),
url.PathEscape(branch),
)
req := newInternalRequest(ctx, reqURL, "POST")
return requestJSONUserMsg(req, "")
}
// SSHLog sends ssh error log response
func SSHLog(ctx context.Context, isErr bool, msg string) error {
reqURL := setting.LocalURL + "api/internal/ssh/log"
req := newInternalRequest(ctx, reqURL, "POST", &SSHLogOption{IsError: isErr, Message: msg})
_, extra := requestJSONResp(req, &responseText{})
return extra.Error
}