gitea/routers/web/repo
wxiaoguang 6bc3079c00
Refactor git command package to improve security and maintainability (#22678)
This PR follows #21535 (and replace #22592)

## Review without space diff

https://github.com/go-gitea/gitea/pull/22678/files?diff=split&w=1

## Purpose of this PR

1. Make git module command completely safe (risky user inputs won't be
passed as argument option anymore)
2. Avoid low-level mistakes like
https://github.com/go-gitea/gitea/pull/22098#discussion_r1045234918
3. Remove deprecated and dirty `CmdArgCheck` function, hide the `CmdArg`
type
4. Simplify code when using git command

## The main idea of this PR

* Move the `git.CmdArg` to the `internal` package, then no other package
except `git` could use it. Then developers could never do
`AddArguments(git.CmdArg(userInput))` any more.
* Introduce `git.ToTrustedCmdArgs`, it's for user-provided and already
trusted arguments. It's only used in a few cases, for example: use git
arguments from config file, help unit test with some arguments.
* Introduce `AddOptionValues` and `AddOptionFormat`, they make code more
clear and simple:
    * Before: `AddArguments("-m").AddDynamicArguments(message)`
    * After: `AddOptionValues("-m", message)`
    * -
* Before: `AddArguments(git.CmdArg(fmt.Sprintf("--author='%s <%s>'",
sig.Name, sig.Email)))`
* After: `AddOptionFormat("--author='%s <%s>'", sig.Name, sig.Email)`

## FAQ

### Why these changes were not done in #21535 ?

#21535 is mainly a search&replace, it did its best to not change too
much logic.

Making the framework better needs a lot of changes, so this separate PR
is needed as the second step.


### The naming of `AddOptionXxx`

According to git's manual, the `--xxx` part is called `option`.

### How can it guarantee that `internal.CmdArg` won't be not misused?

Go's specification guarantees that. Trying to access other package's
internal package causes compilation error.

And, `golangci-lint` also denies the git/internal package. Only the
`git/command.go` can use it carefully.

### There is still a `ToTrustedCmdArgs`, will it still allow developers
to make mistakes and pass untrusted arguments?

Generally speaking, no. Because when using `ToTrustedCmdArgs`, the code
will be very complex (see the changes for examples). Then developers and
reviewers can know that something might be unreasonable.

### Why there was a `CmdArgCheck` and why it's removed?

At the moment of #21535, to reduce unnecessary changes, `CmdArgCheck`
was introduced as a hacky patch. Now, almost all code could be written
as `cmd := NewCommand(); cmd.AddXxx(...)`, then there is no need for
`CmdArgCheck` anymore.


### Why many codes for `signArg == ""` is deleted?

Because in the old code, `signArg` could never be empty string, it's
either `-S[key-id]` or `--no-gpg-sign`. So the `signArg == ""` is just
dead code.

---------

Co-authored-by: Lunny Xiao <xiaolunwen@gmail.com>
2023-02-04 10:30:43 +08:00
..
actions Use relative url in actions view (#22675) 2023-01-31 22:46:10 +00:00
activity.go Implement FSFE REUSE for golang files (#21840) 2022-11-27 18:20:29 +00:00
attachment.go Add API management for issue/pull and comment attachments (#21783) 2022-12-09 14:35:56 +08:00
blame.go Refactor git command package to improve security and maintainability (#22678) 2023-02-04 10:30:43 +08:00
branch.go Supports wildcard protected branch (#20825) 2023-01-16 16:00:22 +08:00
cherry_pick.go Rename almost all Ctx functions (#22071) 2022-12-10 10:46:31 +08:00
commit.go Use context parameter in models/git (#22367) 2023-01-09 11:50:54 +08:00
compare.go Refactor git command package to improve security and maintainability (#22678) 2023-02-04 10:30:43 +08:00
download.go Use context parameter in models/git (#22367) 2023-01-09 11:50:54 +08:00
editor_test.go Implement FSFE REUSE for golang files (#21840) 2022-11-27 18:20:29 +00:00
editor.go Rename almost all Ctx functions (#22071) 2022-12-10 10:46:31 +08:00
find.go Implement FSFE REUSE for golang files (#21840) 2022-11-27 18:20:29 +00:00
http_test.go Implement FSFE REUSE for golang files (#21840) 2022-11-27 18:20:29 +00:00
http.go Refactor git command package to improve security and maintainability (#22678) 2023-02-04 10:30:43 +08:00
issue_content_history.go Multiple improvements for comment edit diff (#21990) 2022-12-02 11:42:34 +02:00
issue_dependency.go Implement FSFE REUSE for golang files (#21840) 2022-11-27 18:20:29 +00:00
issue_label_test.go Implement FSFE REUSE for golang files (#21840) 2022-11-27 18:20:29 +00:00
issue_label.go Implement FSFE REUSE for golang files (#21840) 2022-11-27 18:20:29 +00:00
issue_lock.go Implement FSFE REUSE for golang files (#21840) 2022-11-27 18:20:29 +00:00
issue_stopwatch.go Implement FSFE REUSE for golang files (#21840) 2022-11-27 18:20:29 +00:00
issue_test.go Implement FSFE REUSE for golang files (#21840) 2022-11-27 18:20:29 +00:00
issue_timetrack.go Implement FSFE REUSE for golang files (#21840) 2022-11-27 18:20:29 +00:00
issue_watch.go Implement FSFE REUSE for golang files (#21840) 2022-11-27 18:20:29 +00:00
issue.go Issues: support setting issue template field values with query (#22545) 2023-01-30 12:36:04 +08:00
lfs.go Refactor git command package to improve security and maintainability (#22678) 2023-02-04 10:30:43 +08:00
main_test.go Implement FSFE REUSE for golang files (#21840) 2022-11-27 18:20:29 +00:00
middlewares.go Implement FSFE REUSE for golang files (#21840) 2022-11-27 18:20:29 +00:00
migrate.go Implement FSFE REUSE for golang files (#21840) 2022-11-27 18:20:29 +00:00
milestone.go Rename almost all Ctx functions (#22071) 2022-12-10 10:46:31 +08:00
packages.go Use dynamic package type list (#22263) 2022-12-29 00:31:54 +01:00
patch.go Rename almost all Ctx functions (#22071) 2022-12-10 10:46:31 +08:00
projects_test.go Implement FSFE REUSE for golang files (#21840) 2022-11-27 18:20:29 +00:00
projects.go Support org/user level projects (#22235) 2023-01-20 19:42:33 +08:00
pull_review.go Implement FSFE REUSE for golang files (#21840) 2022-11-27 18:20:29 +00:00
pull.go Improve trace logging for pulls and processes (#22633) 2023-02-03 18:11:48 -05:00
release_test.go Implement FSFE REUSE for golang files (#21840) 2022-11-27 18:20:29 +00:00
release.go Enable @<user>- completion popup on the release description textarea (#22359) 2023-02-01 13:14:40 -06:00
render.go Implement FSFE REUSE for golang files (#21840) 2022-11-27 18:20:29 +00:00
repo.go Move convert package to services (#22264) 2022-12-29 10:57:15 +08:00
runners.go Implement actions (#21937) 2023-01-31 09:45:19 +08:00
search.go Implement FSFE REUSE for golang files (#21840) 2022-11-27 18:20:29 +00:00
setting_protected_branch.go Add main landmark to templates and adjust titles (#22670) 2023-02-01 22:56:10 +00:00
setting_secrets.go Add user secrets (#22191) 2023-02-01 20:53:04 +08:00
setting.go Improve error report when user passes a private key (#22726) 2023-02-02 18:25:54 +00:00
settings_test.go Implement FSFE REUSE for golang files (#21840) 2022-11-27 18:20:29 +00:00
tag.go Add main landmark to templates and adjust titles (#22670) 2023-02-01 22:56:10 +00:00
topic.go Implement FSFE REUSE for golang files (#21840) 2022-11-27 18:20:29 +00:00
treelist.go Implement FSFE REUSE for golang files (#21840) 2022-11-27 18:20:29 +00:00
view_test.go Implement FSFE REUSE for golang files (#21840) 2022-11-27 18:20:29 +00:00
view.go Refactor git command package to improve security and maintainability (#22678) 2023-02-04 10:30:43 +08:00
webhook.go Support system hook API (#14537) 2023-01-28 19:12:10 +01:00
wiki_test.go Implement FSFE REUSE for golang files (#21840) 2022-11-27 18:20:29 +00:00
wiki.go Use context parameter in models/git (#22367) 2023-01-09 11:50:54 +08:00