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[security] transport.Controller{} and transport.Transport{} security and performance improvements (#564)

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* cache transports in controller by privkey-generated pubkey, add retry logic to transport requests

Signed-off-by: kim <grufwub@gmail.com>

* update code comments, defer mutex unlocks

Signed-off-by: kim <grufwub@gmail.com>

* add count to 'performing request' log message

Signed-off-by: kim <grufwub@gmail.com>

* reduce repeated conversions of same url.URL object

Signed-off-by: kim <grufwub@gmail.com>

* move worker.Worker to concurrency subpackage, add WorkQueue type, limit transport http client use by WorkQueue

Signed-off-by: kim <grufwub@gmail.com>

* fix security advisories regarding max outgoing conns, max rsp body size

- implemented by a new httpclient.Client{} that wraps an underlying
  client with a queue to limit connections, and limit reader wrapping
  a response body with a configured maximum size
- update pub.HttpClient args passed around to be this new httpclient.Client{}

Signed-off-by: kim <grufwub@gmail.com>

* add httpclient tests, move ip validation to separate package + change mechanism

Signed-off-by: kim <grufwub@gmail.com>

* fix merge conflicts

Signed-off-by: kim <grufwub@gmail.com>

* use singular mutex in transport rather than separate signer mus

Signed-off-by: kim <grufwub@gmail.com>

* improved useragent string

Signed-off-by: kim <grufwub@gmail.com>

* add note regarding missing test

Signed-off-by: kim <grufwub@gmail.com>

* remove useragent field from transport (instead store in controller)

Signed-off-by: kim <grufwub@gmail.com>

* shutup linter

Signed-off-by: kim <grufwub@gmail.com>

* reset other signing headers on each loop iteration

Signed-off-by: kim <grufwub@gmail.com>

* respect request ctx during retry-backoff sleep period

Signed-off-by: kim <grufwub@gmail.com>

* use external pkg with docs explaining performance "hack"

Signed-off-by: kim <grufwub@gmail.com>

* use http package constants instead of string method literals

Signed-off-by: kim <grufwub@gmail.com>

* add license file headers

Signed-off-by: kim <grufwub@gmail.com>

* update code comment to match new func names

Signed-off-by: kim <grufwub@gmail.com>

* updates to user-agent string

Signed-off-by: kim <grufwub@gmail.com>

* update signed testrig models to fit with new transport logic (instead uses separate signer now)

Signed-off-by: kim <grufwub@gmail.com>

* fuck you linter

Signed-off-by: kim <grufwub@gmail.com>
This commit is contained in:
kim 2022-05-15 10:16:43 +01:00 • committed by GitHub
commit 223025fc27
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61 changed files with 1801 additions and 435 deletions
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48
internal/transport/finger.go
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@ -23,46 +23,36 @@ import (
"fmt"
"io/ioutil"
"net/http"
"net/url"
"github.com/sirupsen/logrus"
)
func (t *transport) Finger(ctx context.Context, targetUsername string, targetDomain string) ([]byte, error) {
l := logrus.WithField("func", "Finger")
urlString := fmt.Sprintf("https://%s/.well-known/webfinger?resource=acct:%s@%s", targetDomain, targetUsername, targetDomain)
l.Debugf("performing GET to %s", urlString)
// Prepare URL string
urlStr := "https://" +
targetDomain +
"/.well-known/webfinger?resource=acct:" +
targetUsername + "@" + targetDomain
iri, err := url.Parse(urlString)
if err != nil {
return nil, fmt.Errorf("Finger: error parsing url %s: %s", urlString, err)
}
l.Debugf("performing GET to %s", iri.String())
req, err := http.NewRequestWithContext(ctx, "GET", iri.String(), nil)
// Generate new GET request from URL string
req, err := http.NewRequestWithContext(ctx, "GET", urlStr, nil)
if err != nil {
return nil, err
}
req.Header.Add("Accept", "application/json")
req.Header.Add("Accept", "application/jrd+json")
req.Header.Add("Date", t.clock.Now().UTC().Format("Mon, 02 Jan 2006 15:04:05")+" GMT")
req.Header.Add("User-Agent", fmt.Sprintf("%s %s", t.appAgent, t.gofedAgent))
req.Header.Set("Host", iri.Host)
t.getSignerMu.Lock()
err = t.getSigner.SignRequest(t.privkey, t.pubKeyID, req, nil)
t.getSignerMu.Unlock()
req.Header.Add("User-Agent", t.controller.userAgent)
req.Header.Set("Host", req.URL.Host)
// Perform the HTTP request
rsp, err := t.GET(req)
if err != nil {
return nil, err
}
resp, err := t.client.Do(req)
if err != nil {
return nil, err
defer rsp.Body.Close()
// Check for an expected status code
if rsp.StatusCode != http.StatusOK {
return nil, fmt.Errorf("GET request to %s failed (%d): %s", urlStr, rsp.StatusCode, rsp.Status)
}
defer resp.Body.Close()
if resp.StatusCode != http.StatusOK {
return nil, fmt.Errorf("GET request to %s failed (%d): %s", iri.String(), resp.StatusCode, resp.Status)
}
return ioutil.ReadAll(resp.Body)
return ioutil.ReadAll(rsp.Body)
}