blob: 6484c61af1439718c7ed3b2d5de40c75ad391bdb (
plain)
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
|
package handlers
import (
"fmt"
"github.com/valyala/fasthttp"
"net/http"
"portgate"
)
// RequestHandler keeps data relevant to the request handlers.
type RequestHandler struct {
// Pointer to the global Portgate config, the values of which can change at runtime.
config *portgate.Config
// HTTP Client for requesting resources from the destination host.
client fasthttp.Client
}
func NewRequestHandler(config *portgate.Config) RequestHandler {
return RequestHandler{
config: config,
client: fasthttp.Client{},
}
}
// HandleRequest handles all types of requests and delegates to more specific handlers.
func (h *RequestHandler) HandleRequest(ctx *fasthttp.RequestCtx) {
path := portgate.ParsePath(string(ctx.Path()))
if path.DestinationIdentifier == -1 {
// We were not given a port.
if path.ResourcePath == "/_portgate" {
h.handlePortgateRequest(ctx)
} else {
// Try to grab actual destination from Referer header.
refererPath, err := portgate.ParsePathFromReferer(path, string(ctx.Request.Header.Referer()))
if err != nil || refererPath.DestinationIdentifier == -1 {
// The referer path also has no destination
h.handleUnknownRequest(ctx)
} else {
// We found the destination from the referer path, so we
// redirect the user to the Portgate URL they should've requested.
portgateUrl := fmt.Sprintf("/%d%s", refererPath.DestinationIdentifier, refererPath.ResourcePath)
ctx.Redirect(portgateUrl, http.StatusTemporaryRedirect)
}
}
} else {
// We were given a port, so we have to pass the request through to the destination host.
h.handlePassthroughRequest(ctx, path)
}
}
// handleUnknownRequest handles any request which could not be processed due to missing
// information.
func (h *RequestHandler) handleUnknownRequest(ctx *fasthttp.RequestCtx) {
// TODO: Show error page
ctx.SetStatusCode(http.StatusNotFound)
_, _ = ctx.WriteString("Unknown request.")
}
|
