/*
* Prepare the hostname and ip address strings that are used to lookup
* host keys in known_hosts files. These may have a port number appended.
*/
void
get_hostfile_hostname_ipaddr(char *hostname, struct sockaddr *hostaddr,
u_short port, char **hostfile_hostname, char **hostfile_ipaddr)
{
char ntop[NI_MAXHOST];
socklen_t addrlen;
switch (hostaddr == NULL ? -1 : hostaddr->sa_family) {
case -1:
addrlen = 0;
break;
case AF_INET:
addrlen = sizeof(struct sockaddr_in);
break;
case AF_INET6:
addrlen = sizeof(struct sockaddr_in6);
break;
default:
addrlen = sizeof(struct sockaddr);
break;
}
/*
* We don't have the remote ip-address for connections
* using a proxy command
*/
if (hostfile_ipaddr != NULL) {
if (options.proxy_command == NULL) {
if (getnameinfo(hostaddr, addrlen,
ntop, sizeof(ntop), NULL, 0, NI_NUMERICHOST) != 0)
fatal("%s: getnameinfo failed", __func__);
*hostfile_ipaddr = put_host_port(ntop, port);
} else {
*hostfile_ipaddr = xstrdup("<no hostip for proxy "
"command>");
}
}
/*
* Allow the user to record the key under a different name or
* differentiate a non-standard port. This is useful for ssh
* tunneling over forwarded connections or if you run multiple
* sshd's on different ports on the same machine.
*/
if (hostfile_hostname != NULL) {
if (options.host_key_alias != NULL) {
*hostfile_hostname = xstrdup(options.host_key_alias);
debug("using hostkeyalias: %s", *hostfile_hostname);
} else {
*hostfile_hostname = put_host_port(hostname, port);
}
}
}
static void
keyprint_one(char *host, struct sshkey *key)
{
char *hostport;
if (hash_hosts && (host = host_hash(host, NULL, 0)) == NULL)
fatal("host_hash failed");
hostport = put_host_port(host, ssh_port);
if (!get_cert)
fprintf(stdout, "%s ", hostport);
sshkey_write(key, stdout);
fputs("\n", stdout);
free(hostport);
}
static void
keyprint_one(const char *host, struct sshkey *key)
{
char *hostport;
const char *known_host, *hashed;
found_one = 1;
if (print_sshfp) {
export_dns_rr(host, key, stdout, 0);
return;
}
hostport = put_host_port(host, ssh_port);
lowercase(hostport);
if (hash_hosts && (hashed = host_hash(host, NULL, 0)) == NULL)
fatal("host_hash failed");
known_host = hash_hosts ? hashed : hostport;
if (!get_cert)
fprintf(stdout, "%s ", known_host);
sshkey_write(key, stdout);
fputs("\n", stdout);
free(hostport);
}