62 lines
1.5 KiB
Go
62 lines
1.5 KiB
Go
package internal
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import (
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"encoding/json"
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"fmt"
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"io"
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"io/ioutil"
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"net/http"
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"github.com/ooni/probe-cli/v3/internal/engine/netx"
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"github.com/ooni/probe-cli/v3/internal/version"
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)
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// Handler implements the Web Connectivity test helper HTTP API.
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type Handler struct {
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Client *http.Client
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Dialer netx.Dialer
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MaxAcceptableBody int64
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Resolver netx.Resolver
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}
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func (h Handler) ServeHTTP(w http.ResponseWriter, req *http.Request) {
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w.Header().Add("Server", fmt.Sprintf(
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"oohelperd/%s ooniprobe-engine/%s", version.Version, version.Version,
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))
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if req.Method != "POST" {
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w.WriteHeader(400)
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return
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}
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if req.Header.Get("content-type") != "application/json" {
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w.WriteHeader(400)
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return
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}
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reader := &io.LimitedReader{R: req.Body, N: h.MaxAcceptableBody}
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data, err := ioutil.ReadAll(reader)
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if err != nil {
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w.WriteHeader(400)
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return
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}
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var creq CtrlRequest
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if err := json.Unmarshal(data, &creq); err != nil {
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w.WriteHeader(400)
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return
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}
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measureConfig := MeasureConfig{
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Client: h.Client,
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Dialer: h.Dialer,
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MaxAcceptableBody: h.MaxAcceptableBody,
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Resolver: h.Resolver,
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}
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cresp, err := Measure(req.Context(), measureConfig, &creq)
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if err != nil {
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w.WriteHeader(400)
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return
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}
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// We assume that the following call cannot fail because it's a
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// clearly serializable data structure.
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data, _ = json.Marshal(cresp)
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w.Header().Add("Content-Type", "application/json")
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w.Write(data)
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}
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