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|
/* +------------------------------------+
* | Inspire Internet Relay Chat Daemon |
* +------------------------------------+
*
* InspIRCd: (C) 2002-2009 InspIRCd Development Team
* See: http://wiki.inspircd.org/Credits
*
* This program is free but copyrighted software; see
* the file COPYING for details.
*
* ---------------------------------------------------
*/
#include "inspircd.h"
#include "ssl.h"
/* $ModDesc: Provides SSL metadata, including /WHOIS information and /SSLINFO command */
class SSLCertExt : public ExtensionItem {
public:
SSLCertExt(Module* parent) : ExtensionItem("ssl_cert", parent) {}
ssl_cert* get(const Extensible* item) const
{
return static_cast<ssl_cert*>(get_raw(item));
}
void set(Extensible* item, ssl_cert* value)
{
value->refcount_inc();
ssl_cert* old = static_cast<ssl_cert*>(set_raw(item, value));
if (old && old->refcount_dec())
delete old;
}
std::string serialize(SerializeFormat format, const Extensible* container, void* item) const
{
return static_cast<ssl_cert*>(item)->GetMetaLine();
}
void unserialize(SerializeFormat format, Extensible* container, const std::string& value)
{
ssl_cert* cert = new ssl_cert;
set(container, cert);
std::stringstream s(value);
std::string v;
getline(s,v,' ');
cert->invalid = (v.find('v') != std::string::npos);
cert->trusted = (v.find('T') != std::string::npos);
cert->revoked = (v.find('R') != std::string::npos);
cert->unknownsigner = (v.find('s') != std::string::npos);
if (v.find('E') != std::string::npos)
{
getline(s,cert->error,'\n');
}
else
{
getline(s,cert->fingerprint,' ');
getline(s,cert->dn,' ');
getline(s,cert->issuer,'\n');
}
}
void free(void* item)
{
ssl_cert* old = static_cast<ssl_cert*>(item);
if (old && old->refcount_dec())
delete old;
}
};
/** Handle /SSLINFO
*/
class CommandSSLInfo : public Command
{
public:
SSLCertExt CertExt;
CommandSSLInfo(Module* Creator) : Command(Creator, "SSLINFO", 1), CertExt(Creator)
{
this->syntax = "<nick>";
}
CmdResult Handle (const std::vector<std::string> ¶meters, User *user)
{
User* target = ServerInstance->FindNick(parameters[0]);
if (target)
{
ssl_cert* cert = CertExt.get(target);
if (cert)
{
if (cert->GetError().length())
{
user->WriteServ("NOTICE %s :*** No SSL certificate information for this user (%s).", user->nick.c_str(), cert->GetError().c_str());
}
else
{
user->WriteServ("NOTICE %s :*** Distinguised Name: %s", user->nick.c_str(), cert->GetDN().c_str());
user->WriteServ("NOTICE %s :*** Issuer: %s", user->nick.c_str(), cert->GetIssuer().c_str());
user->WriteServ("NOTICE %s :*** Key Fingerprint: %s", user->nick.c_str(), cert->GetFingerprint().c_str());
}
return CMD_SUCCESS;
}
else
{
user->WriteServ("NOTICE %s :*** No SSL certificate information for this user.", user->nick.c_str());
return CMD_FAILURE;
}
}
else
user->WriteNumeric(ERR_NOSUCHNICK, "%s %s :No such nickname", user->nick.c_str(), parameters[0].c_str());
return CMD_FAILURE;
}
};
class ModuleSSLInfo : public Module
{
CommandSSLInfo cmd;
public:
ModuleSSLInfo()
: cmd(this)
{
ServerInstance->AddCommand(&cmd);
ServerInstance->Extensions.Register(&cmd.CertExt);
Implementation eventlist[] = { I_OnWhois, I_OnPreCommand };
ServerInstance->Modules->Attach(eventlist, this, 2);
}
Version GetVersion()
{
return Version("SSL Certificate Utilities", VF_VENDOR);
}
void OnWhois(User* source, User* dest)
{
if (cmd.CertExt.get(dest))
{
ServerInstance->SendWhoisLine(source, dest, 320, "%s %s :is using a secure connection", source->nick.c_str(), dest->nick.c_str());
}
}
bool OneOfMatches(const char* host, const char* ip, const char* hostlist)
{
std::stringstream hl(hostlist);
std::string xhost;
while (hl >> xhost)
{
if (InspIRCd::Match(host, xhost, ascii_case_insensitive_map) || InspIRCd::MatchCIDR(ip, xhost, ascii_case_insensitive_map))
{
return true;
}
}
return false;
}
ModResult OnPreCommand(std::string &command, std::vector<std::string> ¶meters, User *user, bool validated, const std::string &original_line)
{
irc::string pcmd = command.c_str();
if ((pcmd == "OPER") && (validated))
{
ConfigReader cf;
char TheHost[MAXBUF];
char TheIP[MAXBUF];
std::string LoginName;
std::string Password;
std::string OperType;
std::string HostName;
std::string HashType;
std::string FingerPrint;
bool SSLOnly;
ssl_cert* cert = cmd.CertExt.get(user);
snprintf(TheHost,MAXBUF,"%s@%s",user->ident.c_str(),user->host.c_str());
snprintf(TheIP, MAXBUF,"%s@%s",user->ident.c_str(),user->GetIPString());
for (int i = 0; i < cf.Enumerate("oper"); i++)
{
LoginName = cf.ReadValue("oper", "name", i);
Password = cf.ReadValue("oper", "password", i);
OperType = cf.ReadValue("oper", "type", i);
HostName = cf.ReadValue("oper", "host", i);
HashType = cf.ReadValue("oper", "hash", i);
FingerPrint = cf.ReadValue("oper", "fingerprint", i);
SSLOnly = cf.ReadFlag("oper", "sslonly", i);
if (FingerPrint.empty() && !SSLOnly)
continue;
if (LoginName != parameters[0])
continue;
if (!OneOfMatches(TheHost, TheIP, HostName.c_str()))
continue;
if (Password.length() && ServerInstance->PassCompare(user, Password.c_str(),parameters[1].c_str(), HashType.c_str()))
continue;
if (SSLOnly && !cert)
{
user->WriteNumeric(491, "%s :This oper login name requires an SSL connection.", user->nick.c_str());
return MOD_RES_DENY;
}
/*
* No cert found or the fingerprint doesn't match
*/
if ((!cert) || (cert->GetFingerprint() != FingerPrint))
{
user->WriteNumeric(491, "%s :This oper login name requires a matching key fingerprint.",user->nick.c_str());
ServerInstance->SNO->WriteToSnoMask('o',"'%s' cannot oper, does not match fingerprint", user->nick.c_str());
ServerInstance->Logs->Log("m_ssl_oper_cert",DEFAULT,"OPER: Failed oper attempt by %s!%s@%s: credentials valid, but wrong fingerprint.", user->nick.c_str(), user->ident.c_str(), user->host.c_str());
return MOD_RES_DENY;
}
}
}
// Let core handle it for extra stuff
return MOD_RES_PASSTHRU;
}
void OnRequest(Request& request)
{
if (strcmp("GET_USER_CERT", request.id) == 0)
{
UserCertificateRequest& req = static_cast<UserCertificateRequest&>(request);
req.cert = cmd.CertExt.get(req.user);
}
else if (strcmp("SET_CERT", request.id) == 0)
{
SSLCertSubmission& req = static_cast<SSLCertSubmission&>(request);
cmd.CertExt.set(req.item, req.cert);
}
}
};
MODULE_INIT(ModuleSSLInfo)
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