85 lines
2.9 KiB
Go
85 lines
2.9 KiB
Go
package webconnectivity
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import (
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"context"
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"github.com/ooni/probe-cli/v3/internal/engine/geolocate"
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"github.com/ooni/probe-cli/v3/internal/engine/httpx"
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"github.com/ooni/probe-cli/v3/internal/engine/model"
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"github.com/ooni/probe-cli/v3/internal/errorsx"
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)
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// ControlRequest is the request that we send to the control
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type ControlRequest struct {
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HTTPRequest string `json:"http_request"`
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HTTPRequestHeaders map[string][]string `json:"http_request_headers"`
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TCPConnect []string `json:"tcp_connect"`
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}
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// ControlTCPConnectResult is the result of the TCP connect
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// attempt performed by the control vantage point.
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type ControlTCPConnectResult struct {
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Status bool `json:"status"`
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Failure *string `json:"failure"`
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}
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// ControlHTTPRequestResult is the result of the HTTP request
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// performed by the control vantage point.
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type ControlHTTPRequestResult struct {
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BodyLength int64 `json:"body_length"`
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Failure *string `json:"failure"`
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Title string `json:"title"`
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Headers map[string]string `json:"headers"`
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StatusCode int64 `json:"status_code"`
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}
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// ControlDNSResult is the result of the DNS lookup
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// performed by the control vantage point.
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type ControlDNSResult struct {
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Failure *string `json:"failure"`
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Addrs []string `json:"addrs"`
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ASNs []int64 `json:"-"` // not visible from the JSON
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}
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// ControlResponse is the response from the control service.
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type ControlResponse struct {
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TCPConnect map[string]ControlTCPConnectResult `json:"tcp_connect"`
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HTTPRequest ControlHTTPRequestResult `json:"http_request"`
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DNS ControlDNSResult `json:"dns"`
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}
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// Control performs the control request and returns the response.
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func Control(
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ctx context.Context, sess model.ExperimentSession,
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thAddr string, creq ControlRequest) (out ControlResponse, err error) {
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clnt := httpx.Client{
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BaseURL: thAddr,
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HTTPClient: sess.DefaultHTTPClient(),
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Logger: sess.Logger(),
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}
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sess.Logger().Infof("control for %s...", creq.HTTPRequest)
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// make sure error is wrapped
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err = errorsx.SafeErrWrapperBuilder{
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Error: clnt.PostJSON(ctx, "/", creq, &out),
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Operation: errorsx.TopLevelOperation,
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}.MaybeBuild()
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sess.Logger().Infof("control for %s... %+v", creq.HTTPRequest, err)
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(&out.DNS).FillASNs(sess)
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return
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}
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// FillASNs fills the ASNs array of ControlDNSResult. For each Addr inside
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// of the ControlDNSResult structure, we obtain the corresponding ASN.
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//
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// This is very useful to know what ASNs were the IP addresses returned by
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// the control according to the probe's ASN database.
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func (dns *ControlDNSResult) FillASNs(sess model.ExperimentSession) {
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dns.ASNs = []int64{}
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for _, ip := range dns.Addrs {
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// TODO(bassosimone): this would be more efficient if we'd open just
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// once the database and then reuse it for every address.
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asn, _, _ := geolocate.LookupASN(ip)
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dns.ASNs = append(dns.ASNs, int64(asn))
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}
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}
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