mirror of
https://github.com/qdm12/gluetun.git
synced 2026-05-07 04:20:12 +02:00
Quentin McGaw
4a78989d9d
- main reason being it's a burden to always define sentinel errors at global scope, wrap them with `%w` instead of using a string directly - only use sentinel errors when it has to be checked using `errors.Is` - replace all usage of these sentinel errors in `fmt.Errorf` with direct strings that were in the sentinel error - exclude the sentinel error definition requirement from .golangci.yml - update unit tests to use ContainersError instead of ErrorIs so it stays as a "not a change detector test" without requiring a sentinel error
114 lines
3.0 KiB
Go
114 lines
3.0 KiB
Go
package api
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import (
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"context"
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"encoding/json"
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"fmt"
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"net/http"
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"net/netip"
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"strings"
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"time"
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"github.com/qdm12/gluetun/internal/constants"
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"github.com/qdm12/gluetun/internal/models"
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)
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type cloudflare struct {
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client *http.Client
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}
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func newCloudflare(client *http.Client) *cloudflare {
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return &cloudflare{
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client: client,
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}
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}
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func (c *cloudflare) String() string {
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return string(Cloudflare)
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}
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func (c *cloudflare) CanFetchAnyIP() bool {
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return false
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}
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func (c *cloudflare) Token() (token string) {
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return ""
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}
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// FetchInfo obtains information on the public IP address of the machine,
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// and returns an error if the `ip` argument is set since the Cloudflare API
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// can only be used to provide details about the current machine public IP.
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func (c *cloudflare) FetchInfo(ctx context.Context, ip netip.Addr) (
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result models.PublicIP, err error,
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) {
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// Define a timeout since the default client has a large timeout and we don't
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// want to wait too long.
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const timeout = 15 * time.Second
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ctx, cancel := context.WithTimeout(ctx, timeout)
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defer cancel()
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urlBase := "https://speed.cloudflare.com"
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url := urlBase + "/meta"
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if ip.IsValid() {
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return result, fmt.Errorf("service is limited: "+
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"cloudflare cannot provide information on the arbitrary IP address %s", ip)
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}
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request, err := http.NewRequestWithContext(ctx, http.MethodGet, url, nil)
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if err != nil {
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return result, err
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}
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request.Header.Add("Referer", urlBase) // returns HTTP 403 otherwise
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response, err := c.client.Do(request)
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if err != nil {
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return result, err
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}
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defer response.Body.Close()
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switch response.StatusCode {
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case http.StatusOK:
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case http.StatusTooManyRequests:
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return result, fmt.Errorf("%w from %s: %d %s",
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ErrTooManyRequests, url, response.StatusCode, response.Status)
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default:
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return result, fmt.Errorf("bad HTTP status received from %s: %d %s",
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url, response.StatusCode, response.Status)
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}
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decoder := json.NewDecoder(response.Body)
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var data struct {
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Hostname string `json:"hostname,omitempty"`
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ClientIP netip.Addr `json:"clientIp,omitempty"`
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ASOrganization string `json:"asOrganization,omitempty"`
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Country string `json:"country,omitempty"`
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City string `json:"city,omitempty"`
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Region string `json:"region,omitempty"`
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PostalCode string `json:"postalCode,omitempty"`
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Latitude string `json:"latitude,omitempty"`
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Longitude string `json:"longitude,omitempty"`
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}
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if err := decoder.Decode(&data); err != nil {
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return result, fmt.Errorf("decoding response: %w", err)
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}
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countryCode := strings.ToLower(data.Country)
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country, ok := constants.CountryCodes()[countryCode]
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if ok {
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data.Country = country
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}
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result = models.PublicIP{
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IP: data.ClientIP,
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Region: data.Region,
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Country: data.Country,
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City: data.City,
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Hostname: data.Hostname,
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Location: data.Latitude + "," + data.Longitude,
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Organization: data.ASOrganization,
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PostalCode: data.PostalCode,
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Timezone: "", // no timezone
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}
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return result, nil
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}
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