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836e857b30
Now sk_open() requires an explicit IO loop to open the socket in. Also specific functions for socket RX pause / resume are added to allow for BGP corking. And last but not least, socket reloop is now synchronous to resolve weird cases of the target loop stopping before actually picking up the relooped socket. Now the caller must ensure that both loops are locked while relooping, and this way all sockets always have their respective loop.
76 lines
1.9 KiB
C
76 lines
1.9 KiB
C
/*
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* BIRD -- An implementation of the SSH protocol for the RPKI transport
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*
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* (c) 2015 CZ.NIC
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* (c) 2015 Pavel Tvrdik <pawel.tvrdik@gmail.com>
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*
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* This file was a part of RTRlib: http://rpki.realmv6.org/
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* This transport implementation uses libssh (http://www.libssh.org/)
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*
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* Can be freely distributed and used under the terms of the GNU GPL.
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <sys/time.h>
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#include "rpki.h"
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#if HAVE_LIBSSH
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static int
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rpki_tr_ssh_open(struct rpki_tr_sock *tr)
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{
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struct rpki_cache *cache = tr->cache;
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struct rpki_config *cf = (void *) cache->p->p.cf;
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struct rpki_tr_ssh_config *ssh_cf = (void *) cf->tr_config.spec;
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sock *sk = tr->sk;
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sk->type = SK_SSH_ACTIVE;
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sk->ssh = mb_allocz(sk->pool, sizeof(struct ssh_sock));
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sk->ssh->username = ssh_cf->user;
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sk->ssh->client_privkey_path = ssh_cf->bird_private_key;
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sk->ssh->server_hostkey_path = ssh_cf->cache_public_key;
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sk->ssh->subsystem = "rpki-rtr";
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sk->ssh->state = SK_SSH_CONNECT;
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if (sk_open(sk, cache->p->p.loop) != 0)
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return RPKI_TR_ERROR;
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return RPKI_TR_SUCCESS;
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}
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static const char *
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rpki_tr_ssh_ident(struct rpki_tr_sock *tr)
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{
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struct rpki_cache *cache = tr->cache;
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struct rpki_config *cf = (void *) cache->p->p.cf;
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struct rpki_tr_ssh_config *ssh_cf = (void *) cf->tr_config.spec;
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const char *username = ssh_cf->user;
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if (tr->ident != NULL)
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return tr->ident;
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/* Length: <user> + '@' + <host> + ' port ' + <port> + '\0' */
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size_t len = strlen(username) + 1 + strlen(cf->hostname) + 1 + 5 + 1;
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char *ident = mb_alloc(cache->pool, len);
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bsnprintf(ident, len, "%s@%s:%u", username, cf->hostname, cf->port);
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tr->ident = ident;
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return tr->ident;
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}
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/**
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* rpki_tr_ssh_init - initializes the RPKI transport structure for a SSH connection
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* @tr: allocated RPKI transport structure
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*/
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void
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rpki_tr_ssh_init(struct rpki_tr_sock *tr)
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{
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tr->open_fp = &rpki_tr_ssh_open;
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tr->ident_fp = &rpki_tr_ssh_ident;
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}
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#endif
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