mirror of
https://github.com/mickael-kerjean/filestash.git
synced 2025-10-31 10:07:15 +08:00
428 lines
9.4 KiB
Go
428 lines
9.4 KiB
Go
package plg_backend_git
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import (
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"fmt"
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. "github.com/mickael-kerjean/filestash/server/common"
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"golang.org/x/crypto/ssh"
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"gopkg.in/src-d/go-git.v4"
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"gopkg.in/src-d/go-git.v4/plumbing"
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"gopkg.in/src-d/go-git.v4/plumbing/object"
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"gopkg.in/src-d/go-git.v4/plumbing/transport"
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"gopkg.in/src-d/go-git.v4/plumbing/transport/http"
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sshgit "gopkg.in/src-d/go-git.v4/plumbing/transport/ssh"
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"io"
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"os"
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"path/filepath"
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"strings"
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"time"
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)
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const GitCachePath = "data/cache/git/"
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var GitCache AppCache
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type Git struct {
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git *GitLib
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}
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func init() {
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Backend.Register("git", Git{})
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GitCache = NewAppCache()
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cachePath := GetAbsolutePath(GitCachePath)
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os.RemoveAll(cachePath)
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os.MkdirAll(cachePath, os.ModePerm)
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GitCache.OnEvict(func(key string, value interface{}) {
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g := value.(*Git)
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g.Close()
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})
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}
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type GitParams struct {
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repo string
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username string
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password string
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passphrase string
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commit string
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branch string
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authorName string
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authorEmail string
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committerName string
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committerEmail string
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basePath string
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}
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func (git Git) Init(params map[string]string, app *App) (IBackend, error) {
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if obj := GitCache.Get(params); obj != nil {
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return obj.(*Git), nil
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}
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g := &Git{
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git: &GitLib{
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params: &GitParams{
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params["repo"],
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params["username"],
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params["password"],
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params["passphrase"],
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params["commit"],
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params["branch"],
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params["authorName"],
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params["authorEmail"],
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params["committerName"],
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params["committerEmail"],
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"",
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},
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},
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}
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p := g.git.params
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if p.branch == "" {
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p.branch = "master"
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}
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if p.commit == "" {
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p.commit = "{action} ({filename}): {path}"
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}
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if p.authorName == "" {
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p.authorName = "Filestash"
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}
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if p.authorEmail == "" {
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p.authorEmail = "https://filestash.app"
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}
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if p.committerName == "" {
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p.committerName = "Filestash"
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}
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if p.committerEmail == "" {
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p.committerEmail = "https://filestash.app"
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}
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hash := GenerateID(app)
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p.basePath = GetAbsolutePath(GitCachePath + "repo_" + hash + "/")
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repo, err := g.git.open(p, p.basePath)
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g.git.repo = repo
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if err != nil {
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return g, err
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}
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GitCache.Set(params, g)
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return g, nil
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}
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func (g Git) LoginForm() Form {
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return Form{
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Elmnts: []FormElement{
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FormElement{
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Name: "type",
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Value: "git",
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Type: "hidden",
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},
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FormElement{
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Name: "repo",
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Type: "text",
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Placeholder: "Repository*",
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},
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FormElement{
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Name: "username",
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Type: "text",
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Placeholder: "Username",
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},
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FormElement{
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Name: "password",
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Type: "long_password",
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Placeholder: "Password",
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},
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FormElement{
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Name: "advanced",
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Type: "enable",
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Placeholder: "Advanced",
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Target: []string{
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"git_path", "git_passphrase", "git_commit",
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"git_branch", "git_author_email", "git_author_name",
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"git_committer_email", "git_committer_name",
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},
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},
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FormElement{
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Id: "git_path",
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Name: "path",
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Type: "text",
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Placeholder: "Path",
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},
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FormElement{
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Id: "git_passphrase",
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Name: "passphrase",
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Type: "text",
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Placeholder: "Passphrase",
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},
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FormElement{
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Id: "git_commit",
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Name: "commit",
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Type: "text",
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Placeholder: "Commit Format: default to \"{action}({filename}): {path}\"",
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},
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FormElement{
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Id: "git_branch",
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Name: "branch",
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Type: "text",
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Placeholder: "Branch: default to \"master\"",
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},
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FormElement{
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Id: "git_author_email",
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Name: "author_email",
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Type: "text",
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Placeholder: "Author email",
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},
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FormElement{
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Id: "git_author_name",
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Name: "author_name",
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Type: "text",
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Placeholder: "Author name",
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},
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FormElement{
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Id: "git_committer_email",
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Name: "committer_email",
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Type: "text",
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Placeholder: "Committer email",
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},
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FormElement{
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Id: "git_committer_name",
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Name: "committer_name",
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Type: "text",
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Placeholder: "Committer name",
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},
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},
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}
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}
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func (g Git) Ls(path string) ([]os.FileInfo, error) {
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g.git.refresh()
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p, err := g.path(path)
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if err != nil {
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return nil, NewError(err.Error(), 403)
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}
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file, err := SafeOsOpenFile(p, os.O_RDONLY, os.ModePerm)
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if err != nil {
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return nil, err
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}
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return file.Readdir(0)
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}
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func (g Git) Cat(path string) (io.ReadCloser, error) {
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p, err := g.path(path)
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if err != nil {
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return nil, NewError(err.Error(), 403)
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}
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return SafeOsOpenFile(p, os.O_RDONLY, os.ModePerm)
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}
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func (g Git) Mkdir(path string) error {
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p, err := g.path(path)
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if err != nil {
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return NewError(err.Error(), 403)
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}
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return SafeOsMkdir(p, os.ModePerm)
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}
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func (g Git) Rm(path string) error {
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p, err := g.path(path)
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if err != nil {
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return NewError(err.Error(), 403)
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}
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if err = SafeOsRemoveAll(p); err != nil {
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return NewError(err.Error(), 403)
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}
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message := g.git.message("delete", path)
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if err = g.git.save(message); err != nil {
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return NewError(err.Error(), 403)
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}
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return nil
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}
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func (g Git) Mv(from string, to string) error {
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fpath, err := g.path(from)
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if err != nil {
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return NewError(err.Error(), 403)
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}
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tpath, err := g.path(to)
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if err != nil {
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return NewError(err.Error(), 403)
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}
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if err = SafeOsRename(fpath, tpath); err != nil {
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return NewError(err.Error(), 403)
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}
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message := g.git.message("move", from)
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if err = g.git.save(message); err != nil {
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return NewError(err.Error(), 403)
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}
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return nil
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}
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func (g Git) Touch(path string) error {
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p, err := g.path(path)
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if err != nil {
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return NewError(err.Error(), 403)
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}
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file, err := SafeOsOpenFile(p, os.O_WRONLY|os.O_CREATE, os.ModePerm)
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if err != nil {
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return NewError(err.Error(), 403)
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}
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file.Close()
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message := g.git.message("create", path)
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if err = g.git.save(message); err != nil {
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return NewError(err.Error(), 403)
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}
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return nil
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}
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func (g Git) Save(path string, file io.Reader) error {
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p, err := g.path(path)
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if err != nil {
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return NewError(err.Error(), 403)
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}
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fo, err := SafeOsOpenFile(p, os.O_WRONLY|os.O_CREATE|os.O_TRUNC, os.ModePerm)
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if err != nil {
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return err
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}
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io.Copy(fo, file)
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fo.Close()
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message := g.git.message("save", path)
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if err = g.git.save(message); err != nil {
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return NewError(err.Error(), 403)
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}
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return nil
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}
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func (g Git) Close() error {
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return os.RemoveAll(g.git.params.basePath)
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}
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func (g Git) path(path string) (string, error) {
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if path == "" {
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return "", ErrNotValid
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}
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basePath := filepath.Join(g.git.params.basePath, path)
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if string(path[len(path)-1]) == "/" {
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basePath += "/"
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}
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if strings.HasPrefix(basePath, g.git.params.basePath) == false {
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return "", ErrNotFound
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}
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return basePath, nil
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}
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type GitLib struct {
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repo *git.Repository
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params *GitParams
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}
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func (g *GitLib) open(params *GitParams, path string) (*git.Repository, error) {
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g.params = params
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if _, err := os.Stat(g.params.basePath); os.IsNotExist(err) {
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auth, err := g.auth()
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if err != nil {
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return nil, err
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}
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g, err := git.PlainClone(path, false, &git.CloneOptions{
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URL: g.params.repo,
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Depth: 1,
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ReferenceName: plumbing.ReferenceName(fmt.Sprintf("refs/heads/%s", g.params.branch)),
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SingleBranch: true,
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Auth: auth,
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})
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if err == transport.ErrEmptyRemoteRepository {
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return g, nil
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}
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return g, err
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}
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return git.PlainOpen(g.params.basePath)
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}
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func (g *GitLib) save(message string) error {
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w, err := g.repo.Worktree()
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if err != nil {
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return NewError(err.Error(), 500)
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}
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_, err = w.Add(".")
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if err != nil {
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return NewError(err.Error(), 500)
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}
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_, err = w.Commit(message, &git.CommitOptions{
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All: true,
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Author: &object.Signature{
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Name: g.params.authorName,
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Email: g.params.authorEmail,
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When: time.Now(),
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},
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Committer: &object.Signature{
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Name: g.params.committerName,
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Email: g.params.committerEmail,
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When: time.Now(),
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},
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})
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if err != nil {
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return err
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}
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auth, err := g.auth()
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if err != nil {
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return err
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}
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return g.repo.Push(&git.PushOptions{
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Auth: auth,
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})
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}
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func (g *GitLib) refresh() error {
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w, err := g.repo.Worktree()
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if err != nil {
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return err
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}
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return w.Pull(&git.PullOptions{RemoteName: "origin"})
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}
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func (g *GitLib) auth() (transport.AuthMethod, error) {
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if strings.HasPrefix(g.params.repo, "http") {
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return &http.BasicAuth{
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Username: g.params.username,
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Password: g.params.password,
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}, nil
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}
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isPrivateKey := func(pass string) bool {
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if len(pass) > 1000 && strings.HasPrefix(pass, "-----") {
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return true
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}
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return false
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}
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if isPrivateKey(g.params.password) {
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signer, err := ssh.ParsePrivateKeyWithPassphrase([]byte(g.params.password), []byte(g.params.passphrase))
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if err != nil {
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return nil, err
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}
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return &sshgit.PublicKeys{
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User: "git",
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Signer: signer,
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HostKeyCallbackHelper: sshgit.HostKeyCallbackHelper{
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HostKeyCallback: ssh.InsecureIgnoreHostKey(),
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},
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}, nil
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}
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return &sshgit.Password{
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User: g.params.username,
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Password: g.params.password,
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HostKeyCallbackHelper: sshgit.HostKeyCallbackHelper{
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HostKeyCallback: ssh.InsecureIgnoreHostKey(),
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},
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}, nil
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}
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func (g *GitLib) message(action string, path string) string {
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message := strings.Replace(g.params.commit, "{action}", "save", -1)
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message = strings.Replace(message, "{filename}", filepath.Base(path), -1)
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message = strings.Replace(message, "{path}", strings.Replace(path, g.params.basePath, "", -1), -1)
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return message
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}
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