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Revision 4378 - (show annotations) (download) (as text)
Tue Mar 8 14:19:03 2011 UTC (13 years, 1 month ago) by maya
Original Path: trunk/ttssh2/ttxssh/ssh.h
File MIME type: text/x-chdr
File size: 20566 byte(s) 
SSH2 の 圧縮で none を利用できるように修正した。
ソース整理
  鍵形式・KEXプロトコル・MAC・圧縮の名前や関数を取得する関数を作成。
    これにより定義で順序を入れ替えてもよくなった。
  enum に型名を付けた。
  共通の関数を使えるところで使うようにした。
1 /*
2 Copyright (c) 1998-2001, Robert O'Callahan
3 All rights reserved.
4
5 Redistribution and use in source and binary forms, with or without modification,
6 are permitted provided that the following conditions are met:
7
8 Redistributions of source code must retain the above copyright notice, this list of
9 conditions and the following disclaimer.
10
11 Redistributions in binary form must reproduce the above copyright notice, this list
12 of conditions and the following disclaimer in the documentation and/or other materials
13 provided with the distribution.
14
15 The name of Robert O'Callahan may not be used to endorse or promote products derived from
16 this software without specific prior written permission.
17
18 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ``AS IS'' AND
19 ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
20 OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
21 THE REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
22 EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
23 SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
25 OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
26 SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 */
28
29 /*
30 This code is copyright (C) 1998-1999 Robert O'Callahan.
31 See LICENSE.TXT for the license.
32 */
33
34 #ifndef __SSH_H
35 #define __SSH_H
36
37 #include "zlib.h"
38 #include <openssl/evp.h>
39
40 #include "buffer.h"
41
42 #define DEBUG_PRINT_TO_FILE(base, msg, len) { \
43 static int count = 0; \
44 debug_print(count + base, msg, len); \
45 count++; \
46 }
47
48 // from OpenSSH
49 extern const EVP_CIPHER *evp_aes_128_ctr(void);
50 extern const EVP_CIPHER *evp_des3_ctr(void);
51 extern const EVP_CIPHER *evp_bf_ctr(void);
52 extern const EVP_CIPHER *evp_cast5_ctr(void);
53
54 // yutaka
55 #define SSH2_USE
56
57
58 /* Some of this code has been adapted from Ian Goldberg's Pilot SSH */
59
60 typedef enum {
61 SSH_MSG_NONE, SSH_MSG_DISCONNECT, SSH_SMSG_PUBLIC_KEY, //2
62 SSH_CMSG_SESSION_KEY, SSH_CMSG_USER, SSH_CMSG_AUTH_RHOSTS, // 5
63 SSH_CMSG_AUTH_RSA, SSH_SMSG_AUTH_RSA_CHALLENGE,
64 SSH_CMSG_AUTH_RSA_RESPONSE, SSH_CMSG_AUTH_PASSWORD,
65 SSH_CMSG_REQUEST_PTY, // 10
66 SSH_CMSG_WINDOW_SIZE, SSH_CMSG_EXEC_SHELL,
67 SSH_CMSG_EXEC_CMD, SSH_SMSG_SUCCESS, SSH_SMSG_FAILURE,
68 SSH_CMSG_STDIN_DATA, SSH_SMSG_STDOUT_DATA, SSH_SMSG_STDERR_DATA,
69 SSH_CMSG_EOF, SSH_SMSG_EXITSTATUS,
70 SSH_MSG_CHANNEL_OPEN_CONFIRMATION, SSH_MSG_CHANNEL_OPEN_FAILURE,
71 SSH_MSG_CHANNEL_DATA, SSH_MSG_CHANNEL_INPUT_EOF,
72 SSH_MSG_CHANNEL_OUTPUT_CLOSED, SSH_MSG_OBSOLETED0,
73 SSH_SMSG_X11_OPEN, SSH_CMSG_PORT_FORWARD_REQUEST, SSH_MSG_PORT_OPEN,
74 SSH_CMSG_AGENT_REQUEST_FORWARDING, SSH_SMSG_AGENT_OPEN,
75 SSH_MSG_IGNORE, SSH_CMSG_EXIT_CONFIRMATION,
76 SSH_CMSG_X11_REQUEST_FORWARDING, SSH_CMSG_AUTH_RHOSTS_RSA,
77 SSH_MSG_DEBUG, SSH_CMSG_REQUEST_COMPRESSION,
78 SSH_CMSG_MAX_PACKET_SIZE, SSH_CMSG_AUTH_TIS,
79 SSH_SMSG_AUTH_TIS_CHALLENGE, SSH_CMSG_AUTH_TIS_RESPONSE,
80 SSH_CMSG_AUTH_KERBEROS, SSH_SMSG_AUTH_KERBEROS_RESPONSE
81 } SSHMessage;
82
83 typedef enum {
84 SSH_CIPHER_NONE, SSH_CIPHER_IDEA, SSH_CIPHER_DES, SSH_CIPHER_3DES,
85 SSH_CIPHER_TSS, SSH_CIPHER_RC4, SSH_CIPHER_BLOWFISH,
86 // for SSH2
87 SSH2_CIPHER_3DES_CBC, SSH2_CIPHER_AES128_CBC,
88 SSH2_CIPHER_AES192_CBC, SSH2_CIPHER_AES256_CBC,
89 SSH2_CIPHER_BLOWFISH_CBC, SSH2_CIPHER_AES128_CTR,
90 SSH2_CIPHER_AES192_CTR, SSH2_CIPHER_AES256_CTR,
91 SSH2_CIPHER_ARCFOUR, SSH2_CIPHER_ARCFOUR128, SSH2_CIPHER_ARCFOUR256,
92 SSH2_CIPHER_CAST128_CBC,
93 SSH2_CIPHER_3DES_CTR, SSH2_CIPHER_BLOWFISH_CTR, SSH2_CIPHER_CAST128_CTR,
94 SSH_CIPHER_MAX = SSH2_CIPHER_CAST128_CTR,
95 } SSHCipher;
96
97 typedef enum {
98 SSH_AUTH_NONE, SSH_AUTH_RHOSTS, SSH_AUTH_RSA, SSH_AUTH_PASSWORD,
99 SSH_AUTH_RHOSTS_RSA, SSH_AUTH_TIS, SSH_AUTH_KERBEROS,
100 SSH_AUTH_PAGEANT = 16,
101 SSH_AUTH_MAX = SSH_AUTH_PAGEANT,
102 } SSHAuthMethod;
103
104 typedef enum {
105 SSH_GENERIC_AUTHENTICATION, SSH_TIS_AUTHENTICATION
106 } SSHAuthMode;
107
108 #define SSH_PROTOFLAG_SCREEN_NUMBER 1
109 #define SSH_PROTOFLAG_HOST_IN_FWD_OPEN 2
110
111 enum channel_type {
112 TYPE_SHELL, TYPE_PORTFWD, TYPE_SCP, TYPE_SFTP, TYPE_AGENT,
113 };
114
115 // for SSH1
116 #define SSH_MAX_SEND_PACKET_SIZE 250000
117
118 // for SSH2
119 /* default window/packet sizes for tcp/x11-fwd-channel */
120 // changed CHAN_SES_WINDOW_DEFAULT from 32KB to 128KB. (2007.10.29 maya)
121 #define CHAN_SES_PACKET_DEFAULT (32*1024)
122 #define CHAN_SES_WINDOW_DEFAULT (4*CHAN_SES_PACKET_DEFAULT)
123 #define CHAN_TCP_PACKET_DEFAULT (32*1024)
124 #define CHAN_TCP_WINDOW_DEFAULT (4*CHAN_TCP_PACKET_DEFAULT)
125 #if 0 // unused
126 #define CHAN_X11_PACKET_DEFAULT (16*1024)
127 #define CHAN_X11_WINDOW_DEFAULT (4*CHAN_X11_PACKET_DEFAULT)
128 #endif
129
130
131 /* SSH2 constants */
132
133 /* SSH2 messages */
134 #define SSH2_MSG_DISCONNECT 1
135 #define SSH2_MSG_IGNORE 2
136 #define SSH2_MSG_UNIMPLEMENTED 3
137 #define SSH2_MSG_DEBUG 4
138 #define SSH2_MSG_SERVICE_REQUEST 5
139 #define SSH2_MSG_SERVICE_ACCEPT 6
140
141 #define SSH2_MSG_KEXINIT 20
142 #define SSH2_MSG_NEWKEYS 21
143
144 #define SSH2_MSG_KEXDH_INIT 30
145 #define SSH2_MSG_KEXDH_REPLY 31
146
147 #define SSH2_MSG_KEX_DH_GEX_GROUP 31
148 #define SSH2_MSG_KEX_DH_GEX_INIT 32
149 #define SSH2_MSG_KEX_DH_GEX_REPLY 33
150 #define SSH2_MSG_KEX_DH_GEX_REQUEST 34
151
152 #define SSH2_MSG_KEX_ECDH_INIT 30
153 #define SSH2_MSG_KEX_ECDH_REPLY 31
154
155 #define SSH2_MSG_USERAUTH_REQUEST 50
156 #define SSH2_MSG_USERAUTH_FAILURE 51
157 #define SSH2_MSG_USERAUTH_SUCCESS 52
158 #define SSH2_MSG_USERAUTH_BANNER 53
159
160 #define SSH2_MSG_USERAUTH_PK_OK 60
161 #define SSH2_MSG_USERAUTH_PASSWD_CHANGEREQ 60
162 #define SSH2_MSG_USERAUTH_INFO_REQUEST 60
163 #define SSH2_MSG_USERAUTH_INFO_RESPONSE 61
164
165 #define SSH2_MSG_GLOBAL_REQUEST 80
166 #define SSH2_MSG_REQUEST_SUCCESS 81
167 #define SSH2_MSG_REQUEST_FAILURE 82
168 #define SSH2_MSG_CHANNEL_OPEN 90
169 #define SSH2_MSG_CHANNEL_OPEN_CONFIRMATION 91
170 #define SSH2_MSG_CHANNEL_OPEN_FAILURE 92
171 #define SSH2_MSG_CHANNEL_WINDOW_ADJUST 93
172 #define SSH2_MSG_CHANNEL_DATA 94
173 #define SSH2_MSG_CHANNEL_EXTENDED_DATA 95
174 #define SSH2_MSG_CHANNEL_EOF 96
175 #define SSH2_MSG_CHANNEL_CLOSE 97
176 #define SSH2_MSG_CHANNEL_REQUEST 98
177 #define SSH2_MSG_CHANNEL_SUCCESS 99
178 #define SSH2_MSG_CHANNEL_FAILURE 100
179
180 /* SSH2 miscellaneous constants */
181 #define SSH2_DISCONNECT_HOST_NOT_ALLOWED_TO_CONNECT 1
182 #define SSH2_DISCONNECT_PROTOCOL_ERROR 2
183 #define SSH2_DISCONNECT_KEY_EXCHANGE_FAILED 3
184 #define SSH2_DISCONNECT_HOST_AUTHENTICATION_FAILED 4
185 #define SSH2_DISCONNECT_MAC_ERROR 5
186 #define SSH2_DISCONNECT_COMPRESSION_ERROR 6
187 #define SSH2_DISCONNECT_SERVICE_NOT_AVAILABLE 7
188 #define SSH2_DISCONNECT_PROTOCOL_VERSION_NOT_SUPPORTED 8
189 #define SSH2_DISCONNECT_HOST_KEY_NOT_VERIFIABLE 9
190 #define SSH2_DISCONNECT_CONNECTION_LOST 10
191 #define SSH2_DISCONNECT_BY_APPLICATION 11
192
193 #define SSH2_OPEN_ADMINISTRATIVELY_PROHIBITED 1
194 #define SSH2_OPEN_CONNECT_FAILED 2
195 #define SSH2_OPEN_UNKNOWN_CHANNEL_TYPE 3
196 #define SSH2_OPEN_RESOURCE_SHORTAGE 4
197
198
199 // �N���C�A���g�����T�[�o������������
200 enum kex_init_proposals {
201 PROPOSAL_KEX_ALGS,
202 PROPOSAL_SERVER_HOST_KEY_ALGS,
203 PROPOSAL_ENC_ALGS_CTOS,
204 PROPOSAL_ENC_ALGS_STOC,
205 PROPOSAL_MAC_ALGS_CTOS,
206 PROPOSAL_MAC_ALGS_STOC,
207 PROPOSAL_COMP_ALGS_CTOS,
208 PROPOSAL_COMP_ALGS_STOC,
209 PROPOSAL_LANG_CTOS,
210 PROPOSAL_LANG_STOC,
211 PROPOSAL_MAX
212 };
213
214 #define KEX_DEFAULT_KEX ""
215 #define KEX_DEFAULT_PK_ALG ""
216 #define KEX_DEFAULT_ENCRYPT ""
217 #define KEX_DEFAULT_MAC ""
218 #define KEX_DEFAULT_COMP ""
219 #define KEX_DEFAULT_LANG ""
220
221 static char *myproposal[PROPOSAL_MAX] = {
222 KEX_DEFAULT_KEX,
223 KEX_DEFAULT_PK_ALG,
224 KEX_DEFAULT_ENCRYPT,
225 KEX_DEFAULT_ENCRYPT,
226 KEX_DEFAULT_MAC,
227 KEX_DEFAULT_MAC,
228 KEX_DEFAULT_COMP,
229 KEX_DEFAULT_COMP,
230 KEX_DEFAULT_LANG,
231 KEX_DEFAULT_LANG,
232 };
233
234
235 typedef enum {
236 KEY_NONE,
237 KEY_RSA1,
238 KEY_RSA,
239 KEY_DSA,
240 KEY_ECDSA256,
241 KEY_ECDSA384,
242 KEY_ECDSA521,
243 KEY_UNSPEC,
244 KEY_MAX = KEY_UNSPEC,
245 } ssh_keytype;
246 #define isECDSAkey(type) ((type) >= KEY_ECDSA256 && (type) <= KEY_ECDSA521)
247
248 typedef struct ssh2_host_key {
249 ssh_keytype type;
250 char *name;
251 } ssh2_host_key_t;
252
253 static ssh2_host_key_t ssh2_host_key[] = {
254 {KEY_RSA1, "ssh-rsa1"}, // for SSH1 only
255 {KEY_RSA, "ssh-rsa"},
256 {KEY_DSA, "ssh-dss"},
257 {KEY_ECDSA256, "ecdsa-sha2-nistp256"},
258 {KEY_ECDSA384, "ecdsa-sha2-nistp384"},
259 {KEY_ECDSA521, "ecdsa-sha2-nistp521"},
260 {KEY_UNSPEC, "ssh-unknown"},
261 {KEY_NONE, NULL},
262 };
263
264 /* Minimum modulus size (n) for RSA keys. */
265 #define SSH_RSA_MINIMUM_MODULUS_SIZE 768
266
267 #define SSH_KEYGEN_DEFAULT_BITS 2048
268 #define SSH_RSA_MINIMUM_KEY_SIZE 768
269 #define SSH_DSA_MINIMUM_KEY_SIZE 1024
270
271
272 typedef struct ssh2_cipher {
273 SSHCipher cipher;
274 char *name;
275 int block_size;
276 int key_len;
277 int discard_len;
278 const EVP_CIPHER *(*func)(void);
279 } ssh2_cipher_t;
280
281 static ssh2_cipher_t ssh2_ciphers[] = {
282 {SSH2_CIPHER_3DES_CBC, "3des-cbc", 8, 24, 0, EVP_des_ede3_cbc},
283 {SSH2_CIPHER_AES128_CBC, "aes128-cbc", 16, 16, 0, EVP_aes_128_cbc},
284 {SSH2_CIPHER_AES192_CBC, "aes192-cbc", 16, 24, 0, EVP_aes_192_cbc},
285 {SSH2_CIPHER_AES256_CBC, "aes256-cbc", 16, 32, 0, EVP_aes_256_cbc},
286 {SSH2_CIPHER_BLOWFISH_CBC, "blowfish-cbc", 8, 16, 0, EVP_bf_cbc},
287 {SSH2_CIPHER_AES128_CTR, "aes128-ctr", 16, 16, 0, evp_aes_128_ctr},
288 {SSH2_CIPHER_AES192_CTR, "aes192-ctr", 16, 24, 0, evp_aes_128_ctr},
289 {SSH2_CIPHER_AES256_CTR, "aes256-ctr", 16, 32, 0, evp_aes_128_ctr},
290 {SSH2_CIPHER_ARCFOUR, "arcfour", 8, 16, 0, EVP_rc4},
291 {SSH2_CIPHER_ARCFOUR128, "arcfour128", 8, 16, 1536, EVP_rc4},
292 {SSH2_CIPHER_ARCFOUR256, "arcfour256", 8, 32, 1536, EVP_rc4},
293 {SSH2_CIPHER_CAST128_CBC, "cast128-cbc", 8, 16, 0, EVP_cast5_cbc},
294 {SSH2_CIPHER_3DES_CTR, "3des-ctr", 8, 24, 0, evp_des3_ctr},
295 {SSH2_CIPHER_BLOWFISH_CTR, "blowfish-ctr", 8, 16, 0, evp_bf_ctr},
296 {SSH2_CIPHER_CAST128_CTR, "cast128-ctr", 8, 16, 0, evp_cast5_ctr},
297 {SSH_CIPHER_NONE, NULL, 0, 0, 0, NULL},
298 };
299
300
301 typedef enum {
302 KEX_DH_NONE, /* disabled line */
303 KEX_DH_GRP1_SHA1,
304 KEX_DH_GRP14_SHA1,
305 KEX_DH_GEX_SHA1,
306 KEX_DH_GEX_SHA256,
307 KEX_ECDH_SHA2_256,
308 KEX_ECDH_SHA2_384,
309 KEX_ECDH_SHA2_521,
310 KEX_DH_UNKNOWN,
311 KEX_DH_MAX = KEX_DH_UNKNOWN,
312 } kex_algorithm;
313
314 typedef struct ssh2_kex_algorithm {
315 kex_algorithm kextype;
316 char *name;
317 const EVP_MD *(*evp_md)(void);
318 } ssh2_kex_algorithm_t;
319
320 static ssh2_kex_algorithm_t ssh2_kex_algorithms[] = {
321 {KEX_DH_GRP1_SHA1, "diffie-hellman-group1-sha1", EVP_sha1},
322 {KEX_DH_GRP14_SHA1, "diffie-hellman-group14-sha1", EVP_sha1},
323 {KEX_DH_GEX_SHA1, "diffie-hellman-group-exchange-sha1", EVP_sha1},
324 {KEX_DH_GEX_SHA256, "diffie-hellman-group-exchange-sha256", EVP_sha256},
325 {KEX_ECDH_SHA2_256, "ecdh-sha2-nistp256", EVP_sha256},
326 {KEX_ECDH_SHA2_384, "ecdh-sha2-nistp384", EVP_sha384},
327 {KEX_ECDH_SHA2_521, "ecdh-sha2-nistp521", EVP_sha512},
328 {KEX_DH_NONE , NULL, NULL},
329 };
330
331
332 typedef enum {
333 HMAC_NONE, /* disabled line */
334 HMAC_SHA1,
335 HMAC_MD5,
336 HMAC_UNKNOWN,
337 HMAC_MAX = HMAC_UNKNOWN,
338 } hmac_type;
339
340 typedef struct ssh2_mac {
341 hmac_type type;
342 char *name;
343 const EVP_MD *(*evp_md)(void);
344 int truncatebits;
345 } ssh2_mac_t;
346
347 static ssh2_mac_t ssh2_macs[] = {
348 {HMAC_SHA1, "hmac-sha1", EVP_sha1, 0},
349 {HMAC_MD5, "hmac-md5", EVP_md5, 0},
350 {HMAC_NONE, NULL, NULL, 0},
351 };
352
353
354 typedef enum {
355 COMP_NONE, /* disabled line */
356 COMP_NOCOMP,
357 COMP_ZLIB,
358 COMP_DELAYED,
359 COMP_UNKNOWN,
360 COMP_MAX = COMP_UNKNOWN,
361 } compression_type;
362
363 typedef struct ssh2_comp {
364 compression_type type;
365 char *name;
366 } ssh2_comp_t;
367
368 static ssh2_comp_t ssh2_comps[] = {
369 {COMP_NOCOMP, "none"},
370 {COMP_ZLIB, "zlib"},
371 {COMP_DELAYED, "zlib@openssh.com"},
372 {COMP_NONE, NULL},
373 };
374
375
376 struct Enc {
377 u_char *key;
378 u_char *iv;
379 unsigned int key_len;
380 unsigned int block_size;
381 };
382
383 struct Mac {
384 char *name;
385 int enabled;
386 const EVP_MD *md;
387 int mac_len;
388 u_char *key;
389 int key_len;
390 };
391
392 struct Comp {
393 int type;
394 int enabled;
395 char *name;
396 };
397
398 typedef struct {
399 struct Enc enc;
400 struct Mac mac;
401 struct Comp comp;
402 } Newkeys;
403
404 #define roundup(x, y) ((((x)+((y)-1))/(y))*(y))
405
406 enum kex_modes {
407 MODE_IN,
408 MODE_OUT,
409 MODE_MAX
410 };
411
412
413 // �z�X�g�L�[(SSH1, SSH2����)���f�[�^�\�� (2006.3.21 yutaka)
414 typedef struct Key {
415 // host key type
416 ssh_keytype type;
417 // SSH2 RSA
418 RSA *rsa;
419 // SSH2 DSA
420 DSA *dsa;
421 // SSH2 ECDSA
422 EC_KEY *ecdsa;
423 // SSH1 RSA
424 int bits;
425 unsigned char *exp;
426 unsigned char *mod;
427 } Key;
428
429 // fingerprint������
430 enum fp_rep {
431 SSH_FP_HEX,
432 SSH_FP_BUBBLEBABBLE,
433 SSH_FP_RANDOMART
434 };
435
436 enum scp_dir {
437 TOREMOTE, FROMREMOTE,
438 };
439
440 /* The packet handler returns TRUE to keep the handler in place,
441 FALSE to remove the handler. */
442 typedef BOOL (* SSHPacketHandler)(PTInstVar pvar);
443
444 typedef struct _SSHPacketHandlerItem SSHPacketHandlerItem;
445 struct _SSHPacketHandlerItem {
446 SSHPacketHandler handler;
447 /* Circular list of handlers for given message */
448 SSHPacketHandlerItem FAR * next_for_message;
449 SSHPacketHandlerItem FAR * last_for_message;
450 /* Circular list of handlers in set */
451 SSHPacketHandlerItem FAR * next_in_set;
452 int active_for_message;
453 };
454
455 typedef struct {
456 char FAR * hostname;
457
458 int server_protocol_flags;
459 char FAR * server_ID;
460
461 /* This buffer is used to hold the outgoing data, and encrypted in-place
462 here if necessary. */
463 unsigned char FAR * outbuf;
464 long outbuflen;
465 /* This buffer is used by the SSH protocol processing to store uncompressed
466 packet data for compression. User data is never streamed through here;
467 it is compressed directly from the user's buffer. */
468 unsigned char FAR * precompress_outbuf;
469 long precompress_outbuflen;
470 /* this is the length of the packet data, including the type header */
471 long outgoing_packet_len;
472
473 /* This buffer is used by the SSH protocol processing to store decompressed
474 packet data. User data is never streamed through here; it is decompressed
475 directly to the user's buffer. */
476 unsigned char FAR * postdecompress_inbuf;
477 long postdecompress_inbuflen;
478
479 unsigned char FAR * payload;
480 long payload_grabbed;
481 long payloadlen;
482 long payload_datastart;
483 long payload_datalen;
484
485 uint32 receiver_sequence_number;
486 uint32 sender_sequence_number;
487
488 z_stream compress_stream;
489 z_stream decompress_stream;
490 BOOL compressing;
491 BOOL decompressing;
492 int compression_level;
493
494 SSHPacketHandlerItem FAR * packet_handlers[256];
495 int status_flags;
496
497 int win_cols;
498 int win_rows;
499
500 unsigned short tcpport;
501 } SSHState;
502
503 #define STATUS_DONT_SEND_USER_NAME 0x01
504 #define STATUS_EXPECTING_COMPRESSION_RESPONSE 0x02
505 #define STATUS_DONT_SEND_CREDENTIALS 0x04
506 #define STATUS_HOST_OK 0x08
507 #define STATUS_INTERACTIVE 0x10
508 #define STATUS_IN_PARTIAL_ID_STRING 0x20
509
510 void SSH_init(PTInstVar pvar);
511 void SSH_open(PTInstVar pvar);
512 void SSH_notify_disconnecting(PTInstVar pvar, char FAR * reason);
513 /* SSH_handle_server_ID returns TRUE iff a valid ID string has been
514 received. If it returns FALSE, we need to keep looking for another
515 ID string. */
516 BOOL SSH_handle_server_ID(PTInstVar pvar, char FAR * ID, int ID_len);
517 /* SSH_handle_packet requires NO PAYLOAD on entry.
518 'len' is the size of the packet: payload + padding (+ CRC for SSHv1)
519 'padding' is the size of the padding.
520 'data' points to the start of the packet data (the length field)
521 */
522 void SSH_handle_packet(PTInstVar pvar, char FAR * data, int len, int padding);
523 void SSH_notify_win_size(PTInstVar pvar, int cols, int rows);
524 void SSH_notify_user_name(PTInstVar pvar);
525 void SSH_notify_cred(PTInstVar pvar);
526 void SSH_notify_host_OK(PTInstVar pvar);
527 void SSH_send(PTInstVar pvar, unsigned char const FAR * buf, unsigned int buflen);
528 /* SSH_extract_payload returns number of bytes extracted */
529 int SSH_extract_payload(PTInstVar pvar, unsigned char FAR * dest, int len);
530 void SSH_end(PTInstVar pvar);
531
532 void SSH_get_server_ID_info(PTInstVar pvar, char FAR * dest, int len);
533 void SSH_get_protocol_version_info(PTInstVar pvar, char FAR * dest, int len);
534 void SSH_get_compression_info(PTInstVar pvar, char FAR * dest, int len);
535
536 /* len must be <= SSH_MAX_SEND_PACKET_SIZE */
537 void SSH_channel_send(PTInstVar pvar, int channel_num,
538 uint32 remote_channel_num,
539 unsigned char FAR * buf, int len);
540 void SSH_fail_channel_open(PTInstVar pvar, uint32 remote_channel_num);
541 void SSH_confirm_channel_open(PTInstVar pvar, uint32 remote_channel_num, uint32 local_channel_num);
542 void SSH_channel_output_eof(PTInstVar pvar, uint32 remote_channel_num);
543 void SSH_channel_input_eof(PTInstVar pvar, uint32 remote_channel_num, uint32 local_channel_num);
544 void SSH_request_forwarding(PTInstVar pvar, char FAR * bind_address, int from_server_port,
545 char FAR * to_local_host, int to_local_port);
546 void SSH_request_X11_forwarding(PTInstVar pvar,
547 char FAR * auth_protocol, unsigned char FAR * auth_data, int auth_data_len, int screen_num);
548 void SSH_open_channel(PTInstVar pvar, uint32 local_channel_num,
549 char FAR * to_remote_host, int to_remote_port,
550 char FAR * originator, unsigned short originator_port);
551
552 int SSH_start_scp(PTInstVar pvar, char *sendfile, char *dstfile);
553 int SSH_start_scp_receive(PTInstVar pvar, char *filename);
554 int SSH_scp_transaction(PTInstVar pvar, char *sendfile, char *dstfile, enum scp_dir direction);
555 int SSH_sftp_transaction(PTInstVar pvar);
556
557 /* auxiliary SSH2 interfaces for pkt.c */
558 int SSH_get_min_packet_size(PTInstVar pvar);
559 /* data is guaranteed to be at least SSH_get_min_packet_size bytes long
560 at least 5 bytes must be decrypted */
561 void SSH_predecrpyt_packet(PTInstVar pvar, char FAR * data);
562 int SSH_get_clear_MAC_size(PTInstVar pvar);
563
564 #define SSH_is_any_payload(pvar) ((pvar)->ssh_state.payload_datalen > 0)
565 #define SSH_get_host_name(pvar) ((pvar)->ssh_state.hostname)
566 #define SSH_get_compression_level(pvar) ((pvar)->ssh_state.compressing ? (pvar)->ts_SSH_CompressionLevel : 0)
567
568 void SSH2_send_kexinit(PTInstVar pvar);
569 BOOL do_SSH2_userauth(PTInstVar pvar);
570 BOOL do_SSH2_authrequest(PTInstVar pvar);
571 void debug_print(int no, char *msg, int len);
572 int get_cipher_block_size(SSHCipher cipher);
573 int get_cipher_key_len(SSHCipher cipher);
574 char* get_kex_algorithm_name(kex_algorithm kextype);
575 const EVP_CIPHER* get_cipher_EVP_CIPHER(SSHCipher cipher);
576 const EVP_MD* get_kex_algorithm_EVP_MD(kex_algorithm kextype);
577 char* get_ssh2_mac_name(hmac_type type);
578 const EVP_MD* get_ssh2_mac_EVP_MD(hmac_type type);
579 int get_ssh2_mac_truncatebits(hmac_type type);
580 char* get_ssh2_comp_name(compression_type type);
581 char* get_ssh_keytype_name(ssh_keytype type);
582 int get_cipher_discard_len(SSHCipher cipher);
583 void ssh_heartbeat_lock_initialize(void);
584 void ssh_heartbeat_lock_finalize(void);
585 void ssh_heartbeat_lock(void);
586 void ssh_heartbeat_unlock(void);
587 void halt_ssh_heartbeat_thread(PTInstVar pvar);
588 void ssh2_channel_free(void);
589 BOOL handle_SSH2_userauth_inforeq(PTInstVar pvar);
590 BOOL handle_SSH2_userauth_passwd_changereq(PTInstVar pvar);
591 void SSH2_update_compression_myproposal(PTInstVar pvar);
592 void SSH2_update_cipher_myproposal(PTInstVar pvar);
593 void SSH2_update_kex_myproposal(PTInstVar pvar);
594 void SSH2_update_host_key_myproposal(PTInstVar pvar);
595 void SSH2_update_hmac_myproposal(PTInstVar pvar);
596 int SSH_notify_break_signal(PTInstVar pvar);
597
598 #endif
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