func (c *Client) request(credentials *Credentials, url string, param web.ParamMap) (*Credentials, web.ParamMap, os.Error) {
c.SignParam(credentials, "POST", url, param)
resp, err := http.PostForm(url, param.StringMap())
if err != nil {
return nil, nil, err
}
p, err := ioutil.ReadAll(resp.Body)
resp.Body.Close()
if err != nil {
return nil, nil, err
}
if resp.StatusCode != 200 {
return nil, nil, os.NewError(fmt.Sprintf("OAuth server status %d, %s", resp.StatusCode, string(p)))
}
m := make(web.ParamMap)
err = m.ParseFormEncodedBytes(p)
if err != nil {
return nil, nil, err
}
credentials = &Credentials{Token: m.Get("oauth_token"), Secret: m.Get("oauth_token_secret")}
if credentials.Token == "" {
return nil, nil, os.NewError("No OAuth token in server result")
}
if credentials.Secret == "" {
return nil, nil, os.NewError("No OAuth secret in server result")
}
return credentials, m, nil
}
func (tw *twitterClient) twitterGet(url string, param web.ParamMap) (p []byte, err os.Error) {
oauthClient.SignParam(tw.twitterToken, "GET", url, param)
url = url + "?" + param.FormEncodedString()
var resp *http.Response
done := make(chan bool, 1)
go func() {
resp, _, err = http.Get(url)
done <- true
}()
timeout := time.After(TWITTER_GET_TIMEOUT * 1e9) //
select {
case <-done:
break
case <-timeout:
return nil, os.NewError("http Get timed out - " + url)
}
if resp == nil {
panic("oops")
}
return readHttpResponse(resp, err)
}
// Data in param must be URL escaped already.
func (tw *twitterClient) twitterPost(url string, param web.ParamMap) (p []byte, err os.Error) {
oauthClient.SignParam(tw.twitterToken, "POST", url, param)
// TODO: remove this dupe.
var resp *http.Response
done := make(chan bool, 1)
go func() {
resp, err = http.PostForm(url, param.StringMap())
done <- true
}()
timeout := time.After(TWITTER_GET_TIMEOUT * 1e9) // post in this case.
select {
case <-done:
break
case <-timeout:
return nil, os.NewError("http POST timed out - " + url)
}
if resp == nil {
panic("oops")
}
return readHttpResponse(resp, err)
}
// SignParam adds an OAuth signature to param.
func (c *Client) SignParam(credentials *Credentials, method, url string, param web.ParamMap) {
param.Set("oauth_consumer_key", c.Credentials.Token)
param.Set("oauth_signature_method", "HMAC-SHA1")
param.Set("oauth_timestamp", strconv.Itoa64(time.Seconds()))
param.Set("oauth_nonce", nonce())
param.Set("oauth_version", "1.0")
if c.Scope != "" {
param.Set("scope", c.Scope)
}
if credentials != nil {
param.Set("oauth_token", credentials.Token)
}
param.Set("oauth_signature", signature(&c.Credentials, credentials, method, url, param))
}