1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
|
/*
In this file we handle the Git 'smart HTTP' protocol
*/
package git
import (
"fmt"
"io"
"net/http"
"path/filepath"
"sync"
"gitlab.com/gitlab-org/gitaly/v16/proto/go/gitalypb"
"gitlab.com/gitlab-org/gitlab/workhorse/internal/api"
"gitlab.com/gitlab-org/gitlab/workhorse/internal/log"
)
const (
// We have to use a negative transfer.hideRefs since this is the only way
// to undo an already set parameter: https://www.spinics.net/lists/git/msg256772.html
GitConfigShowAllRefs = "transfer.hideRefs=!refs"
)
func ReceivePack(a *api.API) http.Handler {
return postRPCHandler(a, "handleReceivePack", handleReceivePack, sendGitAuditEvent("git-receive-pack"), writeReceivePackError)
}
func UploadPack(a *api.API) http.Handler {
return postRPCHandler(a, "handleUploadPack", handleUploadPack, sendGitAuditEvent("git-upload-pack"), writeUploadPackError)
}
func gitConfigOptions(a *api.Response) []string {
var out []string
if a.ShowAllRefs {
out = append(out, GitConfigShowAllRefs)
}
return out
}
func postRPCHandler(
a *api.API,
name string,
handler func(*HttpResponseWriter, *http.Request, *api.Response) (*gitalypb.PackfileNegotiationStatistics, error),
postFunc func(*api.API, *http.Request, *api.Response, *gitalypb.PackfileNegotiationStatistics),
errWriter func(io.Writer) error,
) http.Handler {
return repoPreAuthorizeHandler(a, func(rw http.ResponseWriter, r *http.Request, ar *api.Response) {
cr := &countReadCloser{ReadCloser: r.Body}
r.Body = cr
w := NewHttpResponseWriter(rw)
defer func() {
w.Log(r, cr.Count())
}()
stats, err := handler(w, r, ar)
if err != nil {
handleLimitErr(err, w, errWriter)
// If the handler, or handleLimitErr already wrote a response this WriteHeader call is a
// no-op. It never reaches net/http because GitHttpResponseWriter calls
// WriteHeader on its underlying ResponseWriter at most once.
w.WriteHeader(500)
log.WithRequest(r).WithError(fmt.Errorf("%s: %v", name, err)).Error()
}
postFunc(a, r, ar, stats)
})
}
func repoPreAuthorizeHandler(myAPI *api.API, handleFunc api.HandleFunc) http.Handler {
return myAPI.PreAuthorizeHandler(func(w http.ResponseWriter, r *http.Request, a *api.Response) {
handleFunc(w, r, a)
}, "")
}
func sendGitAuditEvent(action string) func(*api.API, *http.Request, *api.Response, *gitalypb.PackfileNegotiationStatistics) {
return func(a *api.API, r *http.Request, response *api.Response, stats *gitalypb.PackfileNegotiationStatistics) {
if !response.NeedAudit {
return
}
ctx := r.Context()
err := a.SendGitAuditEvent(ctx, api.GitAuditEventRequest{
Action: action,
Protocol: "http",
Repo: response.GL_REPOSITORY,
Username: response.GL_USERNAME,
PackfileStats: stats,
})
if err != nil {
log.WithContextFields(ctx, log.Fields{
"repo": response.GL_REPOSITORY,
"action": action,
"username": response.GL_USERNAME,
}).WithError(err).Error("failed to send git audit event")
}
}
}
func writePostRPCHeader(w http.ResponseWriter, action string) {
w.Header().Set("Content-Type", fmt.Sprintf("application/x-%s-result", action))
w.Header().Set("Cache-Control", "no-cache")
}
func getService(r *http.Request) string {
if r.Method == "GET" {
return r.URL.Query().Get("service")
}
return filepath.Base(r.URL.Path)
}
type countReadCloser struct {
n int64
io.ReadCloser
sync.Mutex
}
func (c *countReadCloser) Read(p []byte) (n int, err error) {
n, err = c.ReadCloser.Read(p)
c.Lock()
defer c.Unlock()
c.n += int64(n)
return n, err
}
func (c *countReadCloser) Count() int64 {
c.Lock()
defer c.Unlock()
return c.n
}
|
