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[ee/wcp] refs #401: added URL restriction protection #709

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[ee/wcp] refs #401: added URL restriction protection #709

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d9fe1cb
refs #401: added URL restriction protection
speedbooster Nov 23, 2025
a44ff68
Merge branch 'main' into main
speedbooster Nov 23, 2025
e7adaed
refs 401: merged main branch
speedbooster Mar 8, 2026
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38 changes: 38 additions & 0 deletions ee/wcp/cefsimple/simple_handler.h
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Original file line number Diff line number Diff line change
Expand Up @@ -10,6 +10,9 @@
#include <spdlog/spdlog.h>

#include <string>
#include <vector>
#include <algorithm>
#include <cctype>
#include "crypt.h"

#define OAUTH_CHALLENGE_LEN 64
Expand All @@ -23,6 +26,14 @@

#include "Credential.h"

// https://windows-cred-provider.pr.test.goauthentik.io
const std::string g_strTokenEndpoint = "/application/o/token/";
// Allowed base URLs (ensure lower case)
const std::vector<std::string> g_vecAllowedBaseURLs = {
"https://windows-cred-provider.pr.test.goauthentik.io",
"https://static.cloudflareinsights.com"
};

class SimpleHandler : public CefClient,
public CefDisplayHandler,
public CefLifeSpanHandler,
Expand Down Expand Up @@ -83,6 +94,33 @@ class SimpleHandler : public CefClient,
std::string strURL = request->GetURL().ToString();
spdlog::debug(strURL.c_str());

// Base URL restriction protection
{
bool bURLValid = false;
std::string strURLLowerCase = strURL;
std::transform(
strURLLowerCase.begin(), strURLLowerCase.end(),
strURLLowerCase.begin(),
[] (const unsigned char c) { return std::tolower(c); }
);
for (const auto& it : g_vecAllowedBaseURLs)
{
if (strURLLowerCase.length() >= it.length())
{
if (strURLLowerCase.substr(0, it.length()) == it)
{
bURLValid = true;
break;
}
}
}
if (! bURLValid)
{
spdlog::debug("Unauthorized URL request. Skip: " + strURL.c_str());
return RV_CANCEL;
}
}

CefString headerKey;
headerKey.FromString("X-Authentik-Platform-Auth-DTH");
CefString headerValue;
Expand Down