34 int	_ssh_exchange_banner(struct ssh *);
35 int	_ssh_send_banner(struct ssh *, char **);
36 int	_ssh_read_banner(struct ssh *, char **);
37 int	_ssh_order_hostkeyalgs(struct ssh *);
38 int	_ssh_verify_host_key(struct sshkey *, struct ssh *);
39 struct sshkey *_ssh_host_public_key(int, int, struct ssh *);
40 struct sshkey *_ssh_host_private_key(int, int, struct ssh *);
73 ssh_init(struct ssh **sshp, int is_server, struct kex_params *kex_params)  in ssh_init()
76 	struct ssh *ssh;  in ssh_init()  local
88 	if ((ssh = ssh_packet_set_connection(NULL, -1, -1)) == NULL)  in ssh_init()
91 		ssh_packet_set_server(ssh);  in ssh_init()
95 	if ((r = kex_new(ssh, proposal, &ssh->kex)) != 0) {  in ssh_init()
96 		ssh_free(ssh);  in ssh_init()
99 	ssh->kex->server = is_server;  in ssh_init()
102 		ssh->kex->kex[KEX_DH_GRP1_SHA1] = kexdh_server;  in ssh_init()
103 		ssh->kex->kex[KEX_DH_GRP14_SHA1] = kexdh_server;  in ssh_init()
104 		ssh->kex->kex[KEX_DH_GRP14_SHA256] = kexdh_server;  in ssh_init()
105 		ssh->kex->kex[KEX_DH_GRP16_SHA512] = kexdh_server;  in ssh_init()
106 		ssh->kex->kex[KEX_DH_GRP18_SHA512] = kexdh_server;  in ssh_init()
107 		ssh->kex->kex[KEX_DH_GEX_SHA1] = kexgex_server;  in ssh_init()
108 		ssh->kex->kex[KEX_DH_GEX_SHA256] = kexgex_server;  in ssh_init()
110 		ssh->kex->kex[KEX_ECDH_SHA2] = kexecdh_server;  in ssh_init()
113 		ssh->kex->kex[KEX_C25519_SHA256] = kexc25519_server;  in ssh_init()
114 		ssh->kex->load_host_public_key=&_ssh_host_public_key;  in ssh_init()
115 		ssh->kex->load_host_private_key=&_ssh_host_private_key;  in ssh_init()
116 		ssh->kex->sign=&_ssh_host_key_sign;  in ssh_init()
119 		ssh->kex->kex[KEX_DH_GRP1_SHA1] = kexdh_client;  in ssh_init()
120 		ssh->kex->kex[KEX_DH_GRP14_SHA1] = kexdh_client;  in ssh_init()
121 		ssh->kex->kex[KEX_DH_GRP14_SHA256] = kexdh_client;  in ssh_init()
122 		ssh->kex->kex[KEX_DH_GRP16_SHA512] = kexdh_client;  in ssh_init()
123 		ssh->kex->kex[KEX_DH_GRP18_SHA512] = kexdh_client;  in ssh_init()
124 		ssh->kex->kex[KEX_DH_GEX_SHA1] = kexgex_client;  in ssh_init()
125 		ssh->kex->kex[KEX_DH_GEX_SHA256] = kexgex_client;  in ssh_init()
127 		ssh->kex->kex[KEX_ECDH_SHA2] = kexecdh_client;  in ssh_init()
130 		ssh->kex->kex[KEX_C25519_SHA256] = kexc25519_client;  in ssh_init()
131 		ssh->kex->verify_host_key =&_ssh_verify_host_key;  in ssh_init()
133 	*sshp = ssh;  in ssh_init()
138 ssh_free(struct ssh *ssh)  in ssh_free()  argument
142 	ssh_packet_close(ssh);  in ssh_free()
147 	while ((k = TAILQ_FIRST(&ssh->public_keys)) != NULL) {  in ssh_free()
148 		TAILQ_REMOVE(&ssh->public_keys, k, next);  in ssh_free()
149 		if (ssh->kex && ssh->kex->server)  in ssh_free()
153 	while ((k = TAILQ_FIRST(&ssh->private_keys)) != NULL) {  in ssh_free()
154 		TAILQ_REMOVE(&ssh->private_keys, k, next);  in ssh_free()
157 	if (ssh->kex)  in ssh_free()
158 		kex_free(ssh->kex);  in ssh_free()
159 	free(ssh);  in ssh_free()
163 ssh_set_app_data(struct ssh *ssh, void *app_data)  in ssh_set_app_data()  argument
165 	ssh->app_data = app_data;  in ssh_set_app_data()
169 ssh_get_app_data(struct ssh *ssh)  in ssh_get_app_data()  argument
171 	return ssh->app_data;  in ssh_get_app_data()
176 ssh_add_hostkey(struct ssh *ssh, struct sshkey *key)  in ssh_add_hostkey()  argument
182 	if (ssh->kex->server) {  in ssh_add_hostkey()
192 		TAILQ_INSERT_TAIL(&ssh->private_keys, k_prv, next);  in ssh_add_hostkey()
196 		TAILQ_INSERT_TAIL(&ssh->public_keys, k, next);  in ssh_add_hostkey()
202 		TAILQ_INSERT_TAIL(&ssh->public_keys, k, next);  in ssh_add_hostkey()
210 ssh_set_verify_host_key_callback(struct ssh *ssh,  in ssh_set_verify_host_key_callback()  argument
211     int (*cb)(struct sshkey *, struct ssh *))  in ssh_set_verify_host_key_callback()
213 	if (cb == NULL || ssh->kex == NULL)  in ssh_set_verify_host_key_callback()
216 	ssh->kex->verify_host_key = cb;  in ssh_set_verify_host_key_callback()
222 ssh_input_append(struct ssh *ssh, const u_char *data, size_t len)  in ssh_input_append()  argument
224 	return sshbuf_put(ssh_packet_get_input(ssh), data, len);  in ssh_input_append()
228 ssh_packet_next(struct ssh *ssh, u_char *typep)  in ssh_packet_next()  argument
239 	if (ssh->kex->client_version_string == NULL ||  in ssh_packet_next()
240 	    ssh->kex->server_version_string == NULL)  in ssh_packet_next()
241 		return _ssh_exchange_banner(ssh);  in ssh_packet_next()
254 		if ((r = ssh_packet_read_poll2(ssh, &type, &seqnr)) != 0)  in ssh_packet_next()
258 		    ssh->dispatch[type] != NULL) {  in ssh_packet_next()
259 			if ((r = (*ssh->dispatch[type])(type, seqnr, ssh)) != 0)  in ssh_packet_next()
269 ssh_packet_payload(struct ssh *ssh, size_t *lenp)  in ssh_packet_payload()  argument
271 	return sshpkt_ptr(ssh, lenp);  in ssh_packet_payload()
275 ssh_packet_put(struct ssh *ssh, int type, const u_char *data, size_t len)  in ssh_packet_put()  argument
279 	if ((r = sshpkt_start(ssh, type)) != 0 ||  in ssh_packet_put()
280 	    (r = sshpkt_put(ssh, data, len)) != 0 ||  in ssh_packet_put()
281 	    (r = sshpkt_send(ssh)) != 0)  in ssh_packet_put()
287 ssh_output_ptr(struct ssh *ssh, size_t *len)  in ssh_output_ptr()  argument
289 	struct sshbuf *output = ssh_packet_get_output(ssh);  in ssh_output_ptr()
296 ssh_output_consume(struct ssh *ssh, size_t len)  in ssh_output_consume()  argument
298 	return sshbuf_consume(ssh_packet_get_output(ssh), len);  in ssh_output_consume()
302 ssh_output_space(struct ssh *ssh, size_t len)  in ssh_output_space()  argument
304 	return (0 == sshbuf_check_reserve(ssh_packet_get_output(ssh), len));  in ssh_output_space()
308 ssh_input_space(struct ssh *ssh, size_t len)  in ssh_input_space()  argument
310 	return (0 == sshbuf_check_reserve(ssh_packet_get_input(ssh), len));  in ssh_input_space()
315 _ssh_read_banner(struct ssh *ssh, char **bannerp)  in _ssh_read_banner()  argument
325 	input = ssh_packet_get_input(ssh);  in _ssh_read_banner()
347 		if (ssh->kex->server || ++n > 65536) {  in _ssh_read_banner()
348 			if ((r = sshbuf_put(ssh_packet_get_output(ssh),  in _ssh_read_banner()
367 	ssh->compat = compat_datafellows(remote_version);  in _ssh_read_banner()
383 _ssh_send_banner(struct ssh *ssh, char **bannerp)  in _ssh_send_banner()  argument
389 	if ((r = sshbuf_put(ssh_packet_get_output(ssh), buf, strlen(buf))) != 0)  in _ssh_send_banner()
399 _ssh_exchange_banner(struct ssh *ssh)  in _ssh_exchange_banner()  argument
401 	struct kex *kex = ssh->kex;  in _ssh_exchange_banner()
412 			r = _ssh_send_banner(ssh, &kex->server_version_string);  in _ssh_exchange_banner()
416 			r = _ssh_read_banner(ssh, &kex->client_version_string);  in _ssh_exchange_banner()
419 			r = _ssh_read_banner(ssh, &kex->server_version_string);  in _ssh_exchange_banner()
423 			r = _ssh_send_banner(ssh, &kex->client_version_string);  in _ssh_exchange_banner()
430 		if ((r = _ssh_order_hostkeyalgs(ssh)) != 0 ||  in _ssh_exchange_banner()
431 		    (r = kex_send_kexinit(ssh)) != 0)  in _ssh_exchange_banner()
438 _ssh_host_public_key(int type, int nid, struct ssh *ssh)  in _ssh_host_public_key()  argument
443 	TAILQ_FOREACH(k, &ssh->public_keys, next) {  in _ssh_host_public_key()
453 _ssh_host_private_key(int type, int nid, struct ssh *ssh)  in _ssh_host_private_key()  argument
458 	TAILQ_FOREACH(k, &ssh->private_keys, next) {  in _ssh_host_private_key()
468 _ssh_verify_host_key(struct sshkey *hostkey, struct ssh *ssh)  in _ssh_verify_host_key()  argument
473 	TAILQ_FOREACH(k, &ssh->public_keys, next) {  in _ssh_verify_host_key()
483 _ssh_order_hostkeyalgs(struct ssh *ssh)  in _ssh_order_hostkeyalgs()  argument
492 	if ((r = kex_buf2prop(ssh->kex->my, NULL, &proposal)) != 0)  in _ssh_order_hostkeyalgs()
508 		TAILQ_FOREACH(k, &ssh->public_keys, next) {  in _ssh_order_hostkeyalgs()
520 		debug2("%s: orig/%d    %s", __func__, ssh->kex->server, orig);  in _ssh_order_hostkeyalgs()
521 		debug2("%s: replace/%d %s", __func__, ssh->kex->server, replace);  in _ssh_order_hostkeyalgs()
525 		r = kex_prop2buf(ssh->kex->my, proposal);  in _ssh_order_hostkeyalgs()