1 files changed, 59 insertions, 0 deletions
diff --git a/webircgateway/pkg/recaptcha/recaptcha.go b/webircgateway/pkg/recaptcha/recaptcha.go
new file mode 100644
index 0000000..2d602fc
--- /dev/null
+++ b/webircgateway/pkg/recaptcha/recaptcha.go
@@ -0,0 +1,59 @@
+// Google re-captcha package tweaked from http://github.com/haisum/recaptcha
+
+package recaptcha
+
+import (
+	"encoding/json"
+	"io/ioutil"
+	"net/http"
+	"net/url"
+	"time"
+)
+
+// R type represents an object of Recaptcha and has public property Secret,
+// which is secret obtained from google recaptcha tool admin interface
+type R struct {
+	URL       string
+	Secret    string
+	lastError []string
+}
+
+// Struct for parsing json in google's response
+type googleResponse struct {
+	Success    bool
+	ErrorCodes []string `json:"error-codes"`
+}
+
+// VerifyResponse is a method similar to `Verify`; but doesn't parse the form for you.  Useful if
+// you're receiving the data as a JSON object from a javascript app or similar.
+func (r *R) VerifyResponse(response string) bool {
+	r.lastError = make([]string, 1)
+	client := &http.Client{Timeout: 20 * time.Second}
+	resp, err := client.PostForm(r.URL,
+		url.Values{"secret": {r.Secret}, "response": {response}})
+	if err != nil {
+		r.lastError = append(r.lastError, err.Error())
+		return false
+	}
+	defer resp.Body.Close()
+	body, err := ioutil.ReadAll(resp.Body)
+	if err != nil {
+		r.lastError = append(r.lastError, err.Error())
+		return false
+	}
+	gr := new(googleResponse)
+	err = json.Unmarshal(body, gr)
+	if err != nil {
+		r.lastError = append(r.lastError, err.Error())
+		return false
+	}
+	if !gr.Success {
+		r.lastError = append(r.lastError, gr.ErrorCodes...)
+	}
+	return gr.Success
+}
+
+// LastError returns errors occurred in last re-captcha validation attempt
+func (r R) LastError() []string {
+	return r.lastError
+}