From fab7c2a194287d1beb90449b15a510549b68fa02 Mon Sep 17 00:00:00 2001
From: cwlowder <curtislowder@gmail.com>
Date: Mon, 5 Jul 2021 23:48:50 -0500
Subject: [PATCH] Add checks for remoteip and sitekey

---
 hcaptcha.go | 28 ++++++++++++++++++++++------
 1 file changed, 22 insertions(+), 6 deletions(-)

diff --git a/hcaptcha.go b/hcaptcha.go
index 4c14402..d09c309 100644
--- a/hcaptcha.go
+++ b/hcaptcha.go
@@ -35,6 +35,12 @@ type Client struct {
 	// and without additional information.
 	FailureHandler http.Handler
 
+	// Optional checks for siteverify
+	// The user's IP address.
+	RemoteIP string
+	// The sitekey you expect to see.
+	SiteKey string
+
 	secret string
 }
 
@@ -121,12 +127,22 @@ func (c *Client) VerifyToken(tkn string) (response Response) {
 		return
 	}
 
-	resp, err := c.HTTPClient.PostForm(apiURL,
-		url.Values{
-			"secret":   {c.secret},
-			"response": {tkn},
-		},
-	)
+	values := url.Values{
+		"secret":   {c.secret},
+		"response": {tkn},
+	}
+
+	// Add remoteIP if set
+	if c.RemoteIP != "" {
+		values.Add("remoteip", c.RemoteIP)
+	}
+
+	// Add sitekey if set
+	if c.SiteKey != "" {
+		values.Add("sitekey", c.SiteKey)
+	}
+
+	resp, err := c.HTTPClient.PostForm(apiURL, values)
 	if err != nil {
 		response.ErrorCodes = append(response.ErrorCodes, err.Error())
 		return