mirror of
https://github.com/unrealircd/unrealircd.git
synced 2026-06-30 20:06:38 +02:00
Bram Matthys
115 lines
3.2 KiB
C
115 lines
3.2 KiB
C
/*
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* IRC - Internet Relay Chat, src/modules/m_starttls.c
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* (C) 2009 Syzop & The UnrealIRCd Team
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*
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* See file AUTHORS in IRC package for additional names of
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* the programmers.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 1, or (at your option)
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* any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include "unrealircd.h"
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CMD_FUNC(m_starttls);
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#define MSG_STARTTLS "STARTTLS"
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ModuleHeader MOD_HEADER(m_starttls)
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= {
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"m_starttls",
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"4.0",
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"command /starttls",
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"3.2-b8-1",
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NULL
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};
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MOD_INIT(m_starttls)
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{
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ClientCapability cap;
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MARK_AS_OFFICIAL_MODULE(modinfo);
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CommandAdd(modinfo->handle, MSG_STARTTLS, m_starttls, MAXPARA, M_UNREGISTERED|M_ANNOUNCE);
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memset(&cap, 0, sizeof(cap));
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cap.name = "tls";
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cap.cap = PROTO_STARTTLS;
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ClientCapabilityAdd(modinfo->handle, &cap);
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return MOD_SUCCESS;
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}
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MOD_LOAD(m_starttls)
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{
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return MOD_SUCCESS;
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}
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MOD_UNLOAD(m_starttls)
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{
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return MOD_SUCCESS;
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}
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CMD_FUNC(m_starttls)
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{
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if (!MyConnect(sptr) || !IsUnknown(sptr))
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return 0;
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if (!ctx_server) /* or SSL support is not enabled (failed to load cert/keys/..)... */
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{
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/* Pretend STARTTLS is an unknown command, this is the safest approach */
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sendto_one(sptr, err_str(ERR_NOTREGISTERED), me.name, "STARTTLS");
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return 0;
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}
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if (iConf.ssl_options & SSLFLAG_NOSTARTTLS)
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{
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sendto_one(sptr, err_str(ERR_NOTREGISTERED), me.name, "STARTTLS");
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return 0;
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}
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if (IsSecure(sptr))
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{
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sendto_one(sptr, err_str(ERR_STARTTLS), me.name, !BadPtr(sptr->name) ? sptr->name : "*", "STARTTLS failed. Already using TLS.");
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return 0;
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}
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dbuf_delete(&sptr->local->recvQ, DBufLength(&sptr->local->recvQ)); /* Clear up any remaining plaintext commands */
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sendto_one(sptr, rpl_str(RPL_STARTTLS), me.name, !BadPtr(sptr->name) ? sptr->name : "*");
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send_queued(sptr);
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SetSSLStartTLSHandshake(sptr);
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Debug((DEBUG_DEBUG, "Starting SSL handshake (due to STARTTLS) for %s", sptr->local->sockhost));
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if ((sptr->local->ssl = SSL_new(ctx_server)) == NULL)
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goto fail;
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sptr->flags |= FLAGS_SSL;
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SSL_set_fd(sptr->local->ssl, sptr->fd);
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SSL_set_nonblocking(sptr->local->ssl);
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if (!ircd_SSL_accept(sptr, sptr->fd)) {
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Debug((DEBUG_DEBUG, "Failed SSL accept handshake in instance 1: %s", sptr->local->sockhost));
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SSL_set_shutdown(sptr->local->ssl, SSL_RECEIVED_SHUTDOWN);
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SSL_smart_shutdown(sptr->local->ssl);
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SSL_free(sptr->local->ssl);
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goto fail;
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}
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/* HANDSHAKE IN PROGRESS */
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return 0;
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fail:
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/* Failure */
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sendto_one(sptr, err_str(ERR_STARTTLS), me.name, !BadPtr(sptr->name) ? sptr->name : "*", "STARTTLS failed");
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sptr->local->ssl = NULL;
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sptr->flags &= ~FLAGS_SSL;
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SetUnknown(sptr);
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return 0;
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}
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