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/* Copyright (c) 2001 Matej Pfajfar.
* Copyright (c) 2001-2004, Roger Dingledine.
* Copyright (c) 2004-2006, Roger Dingledine, Nick Mathewson.
* Copyright (c) 2007-2020, The Tor Project, Inc. */
/* See LICENSE for licensing information */
/**
* @file routerinfo.c
* @brief Manipulate full router descriptors.
**/
#include "core/or/or.h"
#include "feature/nodelist/nodelist.h"
#include "feature/nodelist/routerinfo.h"
#include "feature/nodelist/node_st.h"
#include "feature/nodelist/routerinfo_st.h"
/** Copy the OR port (IP address and TCP port) for <b>router</b> and
* <b>family</b> into *<b>ap_out</b>.
*
* If the requested ORPort does not exist, sets *<b>ap_out</b> to the null
* address and port, and returns -1. Otherwise, returns 0. */
int
router_get_orport(const routerinfo_t *router,
tor_addr_port_t *ap_out,
int family)
{
tor_assert(ap_out != NULL);
if (family == AF_INET) {
tor_addr_copy(&ap_out->addr, &router->ipv4_addr);
ap_out->port = router->ipv4_orport;
return 0;
} else if (family == AF_INET6) {
/* IPv6 addresses are optional, so check if it is valid. */
if (tor_addr_port_is_valid(&router->ipv6_addr, router->ipv6_orport, 0)) {
tor_addr_copy(&ap_out->addr, &router->ipv6_addr);
ap_out->port = router->ipv6_orport;
return 0;
} else {
tor_addr_port_make_null_ap(ap_out, AF_INET6);
return -1;
}
} else {
/* Unsupported address family */
tor_assert_nonfatal_unreached();
tor_addr_port_make_null_ap(ap_out, AF_UNSPEC);
return -1;
}
}
int
router_has_orport(const routerinfo_t *router, const tor_addr_port_t *orport)
{
return
(tor_addr_eq(&orport->addr, &router->ipv4_addr) &&
orport->port == router->ipv4_orport) ||
(tor_addr_eq(&orport->addr, &router->ipv6_addr) &&
orport->port == router->ipv6_orport);
}
/** Return a smartlist of tor_addr_port_t's with all the OR ports of
<b>ri</b>. Note that freeing of the items in the list as well as
the smartlist itself is the callers responsibility. */
smartlist_t *
router_get_all_orports(const routerinfo_t *ri)
{
tor_assert(ri);
node_t fake_node;
memset(&fake_node, 0, sizeof(fake_node));
/* we don't modify ri, fake_node is passed as a const node_t *
*/
fake_node.ri = (routerinfo_t *)ri;
return node_get_all_orports(&fake_node);
}
/** Given a router purpose, convert it to a string. Don't call this on
* ROUTER_PURPOSE_UNKNOWN: The whole point of that value is that we don't
* know its string representation. */
const char *
router_purpose_to_string(uint8_t p)
{
switch (p)
{
case ROUTER_PURPOSE_GENERAL: return "general";
case ROUTER_PURPOSE_BRIDGE: return "bridge";
case ROUTER_PURPOSE_CONTROLLER: return "controller";
default:
tor_assert(0);
}
return NULL;
}
/** Given a string, convert it to a router purpose. */
uint8_t
router_purpose_from_string(const char *s)
{
if (!strcmp(s, "general"))
return ROUTER_PURPOSE_GENERAL;
else if (!strcmp(s, "bridge"))
return ROUTER_PURPOSE_BRIDGE;
else if (!strcmp(s, "controller"))
return ROUTER_PURPOSE_CONTROLLER;
else
return ROUTER_PURPOSE_UNKNOWN;
}
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