106 lines
3.3 KiB
C
106 lines
3.3 KiB
C
/*
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* Copyright (c) 2012 William Pitcock <nenolod@dereferenced.org>.
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*
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* Permission to use, copy, modify, and/or distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice is present in all copies.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
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* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
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* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "stdinc.h"
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#include "client.h"
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#include "match.h"
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#include "hash.h"
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#include "ircd.h"
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#include "numeric.h"
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#include "send.h"
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#include "msg.h"
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#include "modules.h"
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#include "sslproc.h"
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#include "s_assert.h"
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#include "s_serv.h"
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#include "logger.h"
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static const char starttls_desc[] = "Provides the tls CAP and STARTTLS command";
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static void mr_starttls(struct MsgBuf *, struct Client *, struct Client *, int, const char **);
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struct Message starttls_msgtab = {
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"STARTTLS", 0, 0, 0, 0,
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{{mr_starttls, 0}, mg_ignore, mg_ignore, mg_ignore, mg_ignore, mg_ignore}
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};
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mapi_clist_av1 starttls_clist[] = { &starttls_msgtab, NULL };
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unsigned int CLICAP_TLS = 0;
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static struct ClientCapability capdata_tls = {
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.flags = CLICAP_FLAGS_PRIORITY,
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};
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mapi_cap_list_av2 starttls_cap_list[] = {
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{ MAPI_CAP_CLIENT, "tls", &capdata_tls, &CLICAP_TLS },
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{ 0, NULL, NULL, NULL }
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};
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DECLARE_MODULE_AV2(starttls, NULL, NULL, starttls_clist, NULL, NULL, starttls_cap_list, NULL, starttls_desc);
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static void
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mr_starttls(struct MsgBuf *msgbuf_p, struct Client *client_p, struct Client *source_p, int parc, const char *parv[])
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{
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ssl_ctl_t *ctl;
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rb_fde_t *F[2];
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if (!MyConnect(client_p))
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return;
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if (IsSSL(client_p))
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{
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sendto_one_numeric(client_p, ERR_STARTTLS, form_str(ERR_STARTTLS), "Nested TLS handshake not allowed");
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return;
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}
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if (!ircd_ssl_ok || !get_ssld_count())
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{
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sendto_one_numeric(client_p, ERR_STARTTLS, form_str(ERR_STARTTLS), "TLS is not configured");
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return;
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}
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if (rb_socketpair(AF_UNIX, SOCK_STREAM, 0, &F[0], &F[1], "STARTTLS ssld session") == -1)
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{
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ilog_error("error creating SSL/TLS socketpair for ssld slave");
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sendto_one_numeric(client_p, ERR_STARTTLS, form_str(ERR_STARTTLS), "Unable to create SSL/TLS socketpair for ssld offload slave");
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return;
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}
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s_assert(client_p->localClient != NULL);
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/* clear out any remaining plaintext lines */
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rb_linebuf_donebuf(&client_p->localClient->buf_recvq);
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sendto_one_numeric(client_p, RPL_STARTTLS, form_str(RPL_STARTTLS));
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send_queued(client_p);
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/* TODO: set localClient->ssl_callback and handle success/failure */
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ctl = start_ssld_accept(client_p->localClient->F, F[1], connid_get(client_p));
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if (ctl != NULL)
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{
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client_p->localClient->F = F[0];
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client_p->localClient->ssl_ctl = ctl;
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SetSSL(client_p);
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SetSecure(client_p);
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}
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}
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