Beispiel #1
0
CWebSock::EPageReqResult CWebSock::OnPageRequestInternal(const CString& sURI, CString& sPageRet) {
	// Check that their session really belongs to their IP address. IP-based
	// authentication is bad, but here it's just an extra layer that makes
	// stealing cookies harder to pull off.
	//
	// When their IP is wrong, we give them an invalid cookie. This makes
	// sure that they will get a new cookie on their next request.
	if (CZNC::Get().GetProtectWebSessions() && GetSession()->GetIP() != GetRemoteIP()) {
		DEBUG("Expected IP: " << GetSession()->GetIP());
		DEBUG("Remote IP:   " << GetRemoteIP());
		SendCookie("SessionId", "WRONG_IP_FOR_SESSION");
		PrintErrorPage(403, "Access denied", "This session does not belong to your IP.");
		return PAGE_DONE;
	}

	// Check that they really POSTed from one our forms by checking if they
	// know the "secret" CSRF check value. Don't do this for login since
	// CSRF against the login form makes no sense and the login form does a
	// cookies-enabled check which would break otherwise.
	if (IsPost() && GetParam("_CSRF_Check") != GetCSRFCheck() && sURI != "/login") {
		DEBUG("Expected _CSRF_Check: " << GetCSRFCheck());
		DEBUG("Actual _CSRF_Check:   " << GetParam("_CSRF_Check"));
		PrintErrorPage(403, "Access denied", "POST requests need to send "
				"a secret token to prevent cross-site request forgery attacks.");
		return PAGE_DONE;
	}

	SendCookie("SessionId", GetSession()->GetId());

	if (GetSession()->IsLoggedIn()) {
		m_sUser = GetSession()->GetUser()->GetUserName();
		m_bLoggedIn = true;
	}

	// Handle the static pages that don't require a login
	if (sURI == "/") {
		if(!m_bLoggedIn && GetParam("cookie_check", false).ToBool() && GetRequestCookie("SessionId").empty()) {
			GetSession()->AddError("Your browser does not have cookies enabled for this site!");
		}
		return PrintTemplate("index", sPageRet);
	} else if (sURI == "/favicon.ico") {
		return PrintStaticFile("/pub/favicon.ico", sPageRet);
	} else if (sURI == "/robots.txt") {
		return PrintStaticFile("/pub/robots.txt", sPageRet);
	} else if (sURI == "/logout") {
		GetSession()->SetUser(NULL);
		SetLoggedIn(false);
		Redirect("/");

		// We already sent a reply
		return PAGE_DONE;
	} else if (sURI == "/login") {
		if (GetParam("submitted").ToBool()) {
			m_sUser = GetParam("user");
			m_sPass = GetParam("pass");
			m_bLoggedIn = OnLogin(m_sUser, m_sPass);

			// AcceptedLogin()/RefusedLogin() will call Redirect()
			return PAGE_DEFERRED;
		}

		Redirect("/"); // the login form is here
		return PAGE_DONE;
	} else if (sURI.Left(5) == "/pub/") {
		return PrintStaticFile(sURI, sPageRet);
	} else if (sURI.Left(11) == "/skinfiles/") {
		CString sSkinName = sURI.substr(11);
		CString::size_type uPathStart = sSkinName.find("/");
		if (uPathStart != CString::npos) {
			CString sFilePath = sSkinName.substr(uPathStart + 1);
			sSkinName.erase(uPathStart);

			m_Template.ClearPaths();
			m_Template.AppendPath(GetSkinPath(sSkinName) + "pub");

			if (PrintFile(m_Template.ExpandFile(sFilePath))) {
				return PAGE_DONE;
			} else {
				return PAGE_NOTFOUND;
			}
		}
		return PAGE_NOTFOUND;
	} else if (sURI.Left(6) == "/mods/" || sURI.Left(10) == "/modfiles/") {
		// Make sure modules are treated as directories
		if (sURI.Right(1) != "/" && sURI.find(".") == CString::npos && sURI.TrimLeft_n("/mods/").TrimLeft_n("/").find("/") == CString::npos) {
			Redirect(sURI + "/");
			return PAGE_DONE;
		}

		// The URI looks like:
		// /mods/[type]/([network]/)?[module][/page][?arg1=val1&arg2=val2...]

		m_sPath = GetPath().TrimLeft_n("/");

		m_sPath.TrimPrefix("mods/");
		m_sPath.TrimPrefix("modfiles/");

		CString sType = m_sPath.Token(0, false, "/");
		m_sPath = m_sPath.Token(1, true, "/");

		CModInfo::EModuleType eModType;
		if (sType.Equals("global")) {
			eModType = CModInfo::GlobalModule;
		} else if (sType.Equals("user")) {
			eModType = CModInfo::UserModule;
		} else if (sType.Equals("network")) {
			eModType = CModInfo::NetworkModule;
		} else {
			PrintErrorPage(403, "Forbidden", "Unknown module type [" + sType + "]");
			return PAGE_DONE;
		}

		if ((eModType != CModInfo::GlobalModule) && !ForceLogin()) {
			// Make sure we have a valid user
			return PAGE_DONE;
		}

		CIRCNetwork *pNetwork = NULL;
		if (eModType == CModInfo::NetworkModule) {
			CString sNetwork = m_sPath.Token(0, false, "/");
			m_sPath = m_sPath.Token(1, true, "/");

			pNetwork = GetSession()->GetUser()->FindNetwork(sNetwork);

			if (!pNetwork) {
				PrintErrorPage(404, "Not Found", "Network [" + sNetwork + "] not found.");
				return PAGE_DONE;
			}
		}

		m_sModName = m_sPath.Token(0, false, "/");
		m_sPage = m_sPath.Token(1, true, "/");

		if (m_sPage.empty()) {
			m_sPage = "index";
		}

		DEBUG("Path [" + m_sPath + "], Module [" + m_sModName + "], Page [" + m_sPage + "]");

		CModule *pModule = NULL;

		switch (eModType) {
			case CModInfo::GlobalModule:
				pModule = CZNC::Get().GetModules().FindModule(m_sModName);
				break;
			case CModInfo::UserModule:
				pModule = GetSession()->GetUser()->GetModules().FindModule(m_sModName);
				break;
			case CModInfo::NetworkModule:
				pModule = pNetwork->GetModules().FindModule(m_sModName);
				break;
		}

		if (!pModule)
			return PAGE_NOTFOUND;

		m_Template["ModPath"] = pModule->GetWebPath();
		m_Template["ModFilesPath"] = pModule->GetWebFilesPath();

		if (pModule->WebRequiresLogin() && !ForceLogin()) {
			return PAGE_PRINT;
		} else if (pModule->WebRequiresAdmin() && !GetSession()->IsAdmin()) {
			PrintErrorPage(403, "Forbidden", "You need to be an admin to access this module");
			return PAGE_DONE;
		} else if (pModule->GetType() != CModInfo::GlobalModule && pModule->GetUser() != GetSession()->GetUser()) {
			PrintErrorPage(403, "Forbidden", "You must login as " + pModule->GetUser()->GetUserName() + " in order to view this page");
			return PAGE_DONE;
		} else if (pModule->OnWebPreRequest(*this, m_sPage)) {
			return PAGE_DEFERRED;
		}

		VWebSubPages& vSubPages = pModule->GetSubPages();

		for (unsigned int a = 0; a < vSubPages.size(); a++) {
			TWebSubPage& SubPage = vSubPages[a];

			bool bActive = (m_sModName == pModule->GetModName() && m_sPage == SubPage->GetName());

			if (bActive && SubPage->RequiresAdmin() && !GetSession()->IsAdmin()) {
				PrintErrorPage(403, "Forbidden", "You need to be an admin to access this page");
				return PAGE_DONE;
			}
		}

		if (pModule && pModule->GetType() != CModInfo::GlobalModule && (!IsLoggedIn() || pModule->GetUser() != GetSession()->GetUser())) {
			AddModLoop("UserModLoop", *pModule);
		}

		if (sURI.Left(10) == "/modfiles/") {
			m_Template.AppendPath(GetSkinPath(GetSkinName()) + "/mods/" + m_sModName + "/files/");
			m_Template.AppendPath(pModule->GetModDataDir() + "/files/");

			if (PrintFile(m_Template.ExpandFile(m_sPage.TrimLeft_n("/")))) {
				return PAGE_PRINT;
			} else {
				return PAGE_NOTFOUND;
			}
		} else {
			SetPaths(pModule, true);

			/* if a module returns false from OnWebRequest, it does not
			   want the template to be printed, usually because it did a redirect. */
			if (pModule->OnWebRequest(*this, m_sPage, m_Template)) {
				// If they already sent a reply, let's assume
				// they did what they wanted to do.
				if (SentHeader()) {
					return PAGE_DONE;
				}
				return PrintTemplate(m_sPage, sPageRet, pModule);
			}

			if (!SentHeader()) {
				PrintErrorPage(404, "Not Implemented", "The requested module does not acknowledge web requests");
			}
			return PAGE_DONE;
		}
	} else {
		CString sPage(sURI.Trim_n("/"));
		if (sPage.length() < 32) {
			for (unsigned int a = 0; a < sPage.length(); a++) {
				unsigned char c = sPage[a];

				if ((c < '0' || c > '9') && (c < 'a' || c > 'z') && (c < 'A' || c > 'Z') && c != '_') {
					return PAGE_NOTFOUND;
				}
			}

			return PrintTemplate(sPage, sPageRet);
		}
	}

	return PAGE_NOTFOUND;
}
Beispiel #2
0
CWebSock::EPageReqResult CWebSock::OnPageRequestInternal(const CString& sURI, CString& sPageRet) {
	if (CZNC::Get().GetProtectWebSessions() && GetSession()->GetIP() != GetRemoteIP()) {
		DEBUG("Expected IP: " << GetSession()->GetIP());
		DEBUG("Remote IP:   " << GetRemoteIP());
		PrintErrorPage(403, "Access denied", "This session does not belong to your IP.");
		return PAGE_DONE;
	}

	// Check that they really POSTed from one our forms by checking if they
	// know the "secret" CSRF check value. Don't do this for login since
	// CSRF against the login form makes no sense and the login form does a
	// cookies-enabled check which would break otherwise.
	if (IsPost() && GetParam("_CSRF_Check") != GetCSRFCheck() && sURI != "/login") {
		DEBUG("Expected _CSRF_Check: " << GetCSRFCheck());
		DEBUG("Actual _CSRF_Check:   " << GetParam("_CSRF_Check"));
		PrintErrorPage(403, "Access denied", "POST requests need to send "
				"a secret token to prevent cross-site request forgery attacks.");
		return PAGE_DONE;
	}

	SendCookie("SessionId", GetSession()->GetId());

	if (GetSession()->IsLoggedIn()) {
		m_sUser = GetSession()->GetUser()->GetUserName();
		m_bLoggedIn = true;
	}

	// Handle the static pages that don't require a login
	if (sURI == "/") {
		if(!m_bLoggedIn && GetParam("cookie_check", false).ToBool() && GetRequestCookie("SessionId").empty()) {
			GetSession()->AddError("Your browser does not have cookies enabled for this site!");
		}
		return PrintTemplate("index", sPageRet);
	} else if (sURI == "/favicon.ico") {
		return PrintStaticFile("/pub/favicon.ico", sPageRet);
	} else if (sURI == "/robots.txt") {
		return PrintStaticFile("/pub/robots.txt", sPageRet);
	} else if (sURI == "/logout") {
		GetSession()->SetUser(NULL);
		SetLoggedIn(false);
		Redirect("/");

		// We already sent a reply
		return PAGE_DONE;
	} else if (sURI == "/login") {
		if (GetParam("submitted").ToBool()) {
			m_sUser = GetParam("user");
			m_sPass = GetParam("pass");
			m_bLoggedIn = OnLogin(m_sUser, m_sPass);

			// AcceptedLogin()/RefusedLogin() will call Redirect()
			return PAGE_DEFERRED;
		}

		Redirect("/"); // the login form is here
		return PAGE_DONE;
	} else if (sURI.Left(5) == "/pub/") {
		return PrintStaticFile(sURI, sPageRet);
	} else if (sURI.Left(11) == "/skinfiles/") {
		CString sSkinName = sURI.substr(11);
		CString::size_type uPathStart = sSkinName.find("/");
		if (uPathStart != CString::npos) {
			CString sFilePath = sSkinName.substr(uPathStart + 1);
			sSkinName.erase(uPathStart);

			m_Template.ClearPaths();
			m_Template.AppendPath(GetSkinPath(sSkinName) + "pub");

			if (PrintFile(m_Template.ExpandFile(sFilePath))) {
				return PAGE_DONE;
			} else {
				return PAGE_NOTFOUND;
			}
		}
		return PAGE_NOTFOUND;
	} else if (sURI.Left(6) == "/mods/" || sURI.Left(10) == "/modfiles/") {
		ParsePath();
		// Make sure modules are treated as directories
		if (sURI.Right(1) != "/" && sURI.find(".") == CString::npos && sURI.TrimLeft_n("/mods/").TrimLeft_n("/").find("/") == CString::npos) {
			Redirect(sURI + "/");
			return PAGE_DONE;
		}

		CModule *pModule = CZNC::Get().GetModules().FindModule(m_sModName);
		if (!pModule) {
			// Check if GetSession()->GetUser() is NULL and display
			// an error in that case
			if (!ForceLogin())
				return PAGE_DONE;

			pModule = GetSession()->GetUser()->GetModules().FindModule(m_sModName);
		}

		if (!pModule) {
			return PAGE_NOTFOUND;
		} else if (pModule->WebRequiresLogin() && !ForceLogin()) {
			return PAGE_PRINT;
		} else if (pModule->WebRequiresAdmin() && !GetSession()->IsAdmin()) {
			PrintErrorPage(403, "Forbidden", "You need to be an admin to access this module");
			return PAGE_DONE;
		} else if (!pModule->IsGlobal() && pModule->GetUser() != GetSession()->GetUser()) {
			PrintErrorPage(403, "Forbidden", "You must login as " + pModule->GetUser()->GetUserName() + " in order to view this page");
			return PAGE_DONE;
		} else if (pModule->OnWebPreRequest(*this, m_sPage)) {
			return PAGE_DEFERRED;
		}

		VWebSubPages& vSubPages = pModule->GetSubPages();

		for (unsigned int a = 0; a < vSubPages.size(); a++) {
			TWebSubPage& SubPage = vSubPages[a];

			bool bActive = (m_sModName == pModule->GetModName() && m_sPage == SubPage->GetName());

			if (bActive && SubPage->RequiresAdmin() && !GetSession()->IsAdmin()) {
				PrintErrorPage(403, "Forbidden", "You need to be an admin to access this page");
				return PAGE_DONE;
			}
		}

		if (pModule && !pModule->IsGlobal() && (!IsLoggedIn() || pModule->GetUser() != GetSession()->GetUser())) {
			AddModLoop("UserModLoop", *pModule);
		}

		if (sURI.Left(10) == "/modfiles/") {
			m_Template.AppendPath(GetSkinPath(GetSkinName()) + "/mods/" + m_sModName + "/files/");
			m_Template.AppendPath(pModule->GetModDataDir() + "/files/");

			if (PrintFile(m_Template.ExpandFile(m_sPage.TrimLeft_n("/")))) {
				return PAGE_PRINT;
			} else {
				return PAGE_NOTFOUND;
			}
		} else {
			SetPaths(pModule, true);

			/* if a module returns false from OnWebRequest, it does not
			   want the template to be printed, usually because it did a redirect. */
			if (pModule->OnWebRequest(*this, m_sPage, m_Template)) {
				// If they already sent a reply, let's assume
				// they did what they wanted to do.
				if (SentHeader()) {
					return PAGE_DONE;
				}
				return PrintTemplate(m_sPage, sPageRet, pModule);
			}

			if (!SentHeader()) {
				PrintErrorPage(404, "Not Implemented", "The requested module does not acknowledge web requests");
			}
			return PAGE_DONE;
		}
	} else {
		CString sPage(sURI.Trim_n("/"));
		if (sPage.length() < 32) {
			for (unsigned int a = 0; a < sPage.length(); a++) {
				unsigned char c = sPage[a];

				if ((c < '0' || c > '9') && (c < 'a' || c > 'z') && (c < 'A' || c > 'Z') && c != '_') {
					return PAGE_NOTFOUND;
				}
			}

			return PrintTemplate(sPage, sPageRet);
		}
	}

	return PAGE_NOTFOUND;
}