pissircd/src/modules/sts.c

112 lines
2.6 KiB
C

/*
* IRC - Internet Relay Chat, src/modules/sts.c
* (C) 2017 Syzop & The UnrealIRCd Team
*
* See file AUTHORS in IRC package for additional names of
* the programmers.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 1, or (at your option)
* any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include "unrealircd.h"
ModuleHeader MOD_HEADER
= {
"sts",
"5.0",
"Strict Transport Security CAP",
"UnrealIRCd Team",
"unrealircd-6",
};
MOD_INIT()
{
MARK_AS_OFFICIAL_MODULE(modinfo);
return MOD_SUCCESS;
}
void init_sts(ModuleInfo *modinfo);
MOD_LOAD()
{
/* init_sts is delayed to MOD_LOAD due to configuration dependency */
init_sts(modinfo);
return MOD_SUCCESS;
}
MOD_UNLOAD()
{
return MOD_SUCCESS;
}
/** Check if this capability should be visible.
* Note that 'client' may be NULL.
*/
int sts_capability_visible(Client *client)
{
TLSOptions *ssl;
/* This is possible if queried from the CAP NEW/DEL code */
if (client == NULL)
return (iConf.tls_options && iConf.tls_options->sts_port) ? 1 : 0;
if (!IsSecure(client))
{
if (iConf.tls_options && iConf.tls_options->sts_port)
return 1; /* YES, non-TLS user and set::tls::sts-policy configured */
return 0; /* NO, there is no sts-policy */
}
ssl = FindTLSOptionsForUser(client);
if (ssl && ssl->sts_port)
return 1;
return 0;
}
const char *sts_capability_parameter(Client *client)
{
TLSOptions *ssl;
static char buf[256];
if (IsSecure(client))
ssl = FindTLSOptionsForUser(client);
else
ssl = iConf.tls_options;
if (!ssl)
return ""; /* This would be odd. */
snprintf(buf, sizeof(buf), "port=%d,duration=%ld", ssl->sts_port, ssl->sts_duration);
if (ssl->sts_preload)
strlcat(buf, ",preload", sizeof(buf));
return buf;
}
void init_sts(ModuleInfo *modinfo)
{
ClientCapabilityInfo cap;
memset(&cap, 0, sizeof(cap));
cap.name = "sts";
cap.flags = CLICAP_FLAGS_ADVERTISE_ONLY;
cap.visible = sts_capability_visible;
cap.parameter = sts_capability_parameter;
ClientCapabilityAdd(modinfo->handle, &cap, NULL);
}