72 lines
1.9 KiB
Go
72 lines
1.9 KiB
Go
package webfinger
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import (
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"encoding/json"
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"errors"
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"fmt"
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"net/http"
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"net/url"
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"strings"
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"github.com/owncast/owncast/utils"
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)
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// GetWebfingerLinks will return webfinger data for an account.
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func GetWebfingerLinks(account string) ([]map[string]interface{}, error) {
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type webfingerResponse struct {
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Links []map[string]interface{} `json:"links"`
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}
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account = strings.TrimLeft(account, "@") // remove any leading @
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accountComponents := strings.Split(account, "@")
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fediverseServer := accountComponents[1]
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// Reject any requests to our internal network or loopback.
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if utils.IsHostnameInternal(fediverseServer) {
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return nil, errors.New("unable to use provided host as a valid fediverse server")
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}
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// HTTPS is required.
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requestURL, err := url.Parse("https://" + fediverseServer)
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if err != nil {
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return nil, fmt.Errorf("unable to parse fediverse server host %s", fediverseServer)
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}
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requestURL.Path = "/.well-known/webfinger"
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query := requestURL.Query()
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query.Add("resource", fmt.Sprintf("acct:%s", account))
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requestURL.RawQuery = query.Encode()
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// Do not support redirects.
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client := &http.Client{
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CheckRedirect: func(req *http.Request, via []*http.Request) error {
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return http.ErrUseLastResponse
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},
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}
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req, err := http.NewRequest("GET", requestURL.String(), nil)
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if err != nil {
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return nil, err
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}
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req.Header.Set("Accept", "application/json")
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response, err := client.Do(req)
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if err != nil {
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return nil, err
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}
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if response.StatusCode != http.StatusOK {
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return nil, errors.New("webfinger request returned bad status code: " + http.StatusText(response.StatusCode) + ", check account details")
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}
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defer response.Body.Close()
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var links webfingerResponse
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decoder := json.NewDecoder(response.Body)
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if err := decoder.Decode(&links); err != nil {
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return nil, fmt.Errorf("error decoding webfinger response: %s", err)
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}
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return links.Links, nil
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}
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