| blob | 2141fa6e2ba521cf71db6b84db4bc59270f54f08 |
1 #include <stdio.h>\r
2 #include <string.h>\r
3 \r
4 #include "puttymem.h"\r
5 #include "tree234.h"\r
6 #include "network.h"\r
7 #include "int64.h"\r
8 #include "misc.h"\r
9 \r
10 struct ssh_channel;\r
11 typedef struct ssh_tag *Ssh;\r
12 \r
13 extern int sshfwd_write(struct ssh_channel *c, char *, int);\r
14 extern void sshfwd_write_eof(struct ssh_channel *c);\r
15 extern void sshfwd_unclean_close(struct ssh_channel *c, const char *err);\r
16 extern void sshfwd_unthrottle(struct ssh_channel *c, int bufsize);\r
17 Conf *sshfwd_get_conf(struct ssh_channel *c);\r
18 void sshfwd_x11_sharing_handover(struct ssh_channel *c,\r
19 void *share_cs, void *share_chan,\r
20 const char *peer_addr, int peer_port,\r
21 int endian, int protomajor, int protominor,\r
22 const void *initial_data, int initial_len);\r
23 void sshfwd_x11_is_local(struct ssh_channel *c);\r
24 \r
25 extern Socket ssh_connection_sharing_init(const char *host, int port,\r
26 Conf *conf, Ssh ssh, void **state);\r
27 int ssh_share_test_for_upstream(const char *host, int port, Conf *conf);\r
28 void share_got_pkt_from_server(void *ctx, int type,\r
29 unsigned char *pkt, int pktlen);\r
30 void share_activate(void *state, const char *server_verstring);\r
31 void sharestate_free(void *state);\r
32 int share_ndownstreams(void *state);\r
33 \r
34 void ssh_connshare_log(Ssh ssh, int event, const char *logtext,\r
35 const char *ds_err, const char *us_err);\r
36 unsigned ssh_alloc_sharing_channel(Ssh ssh, void *sharing_ctx);\r
37 void ssh_delete_sharing_channel(Ssh ssh, unsigned localid);\r
38 int ssh_alloc_sharing_rportfwd(Ssh ssh, const char *shost, int sport,\r
39 void *share_ctx);\r
40 void ssh_sharing_queue_global_request(Ssh ssh, void *share_ctx);\r
41 struct X11FakeAuth *ssh_sharing_add_x11_display(Ssh ssh, int authtype,\r
42 void *share_cs,\r
43 void *share_chan);\r
44 void ssh_sharing_remove_x11_display(Ssh ssh, struct X11FakeAuth *auth);\r
45 void ssh_send_packet_from_downstream(Ssh ssh, unsigned id, int type,\r
46 const void *pkt, int pktlen,\r
47 const char *additional_log_text);\r
48 void ssh_sharing_downstream_connected(Ssh ssh, unsigned id,\r
49 const char *peerinfo);\r
50 void ssh_sharing_downstream_disconnected(Ssh ssh, unsigned id);\r
51 void ssh_sharing_logf(Ssh ssh, unsigned id, const char *logfmt, ...);\r
52 int ssh_agent_forwarding_permitted(Ssh ssh);\r
53 void share_setup_x11_channel(void *csv, void *chanv,\r
54 unsigned upstream_id, unsigned server_id,\r
55 unsigned server_currwin, unsigned server_maxpkt,\r
56 unsigned client_adjusted_window,\r
57 const char *peer_addr, int peer_port, int endian,\r
58 int protomajor, int protominor,\r
59 const void *initial_data, int initial_len);\r
60 \r
61 /*\r
62 * Useful thing.\r
63 */\r
64 #ifndef lenof\r
65 #define lenof(x) ( (sizeof((x))) / (sizeof(*(x))))\r
66 #endif\r
67 \r
68 #define SSH_CIPHER_IDEA 1\r
69 #define SSH_CIPHER_DES 2\r
70 #define SSH_CIPHER_3DES 3\r
71 #define SSH_CIPHER_BLOWFISH 6\r
72 \r
73 #ifdef MSCRYPTOAPI\r
74 #define APIEXTRA 8\r
75 #else\r
76 #define APIEXTRA 0\r
77 #endif\r
78 \r
79 #ifndef BIGNUM_INTERNAL\r
80 typedef void *Bignum;\r
81 #endif\r
82 \r
83 struct RSAKey {\r
84 int bits;\r
85 int bytes;\r
86 #ifdef MSCRYPTOAPI\r
87 unsigned long exponent;\r
88 unsigned char *modulus;\r
89 #else\r
90 Bignum modulus;\r
91 Bignum exponent;\r
92 Bignum private_exponent;\r
93 Bignum p;\r
94 Bignum q;\r
95 Bignum iqmp;\r
96 #endif\r
97 char *comment;\r
98 };\r
99 \r
100 struct dss_key {\r
101 Bignum p, q, g, y, x;\r
102 };\r
103 \r
104 struct ec_curve;\r
105 \r
106 struct ec_point {\r
107 const struct ec_curve *curve;\r
108 Bignum x, y;\r
109 Bignum z; /* Jacobian denominator */\r
110 unsigned char infinity;\r
111 };\r
112 \r
113 void ec_point_free(struct ec_point *point);\r
114 \r
115 /* Weierstrass form curve */\r
116 struct ec_wcurve\r
117 {\r
118 Bignum a, b, n;\r
119 struct ec_point G;\r
120 };\r
121 \r
122 /* Montgomery form curve */\r
123 struct ec_mcurve\r
124 {\r
125 Bignum a, b;\r
126 struct ec_point G;\r
127 };\r
128 \r
129 /* Edwards form curve */\r
130 struct ec_ecurve\r
131 {\r
132 Bignum l, d;\r
133 struct ec_point B;\r
134 };\r
135 \r
136 struct ec_curve {\r
137 enum { EC_WEIERSTRASS, EC_MONTGOMERY, EC_EDWARDS } type;\r
138 /* 'name' is the identifier of the curve when it has to appear in\r
139 * wire protocol encodings, as it does in e.g. the public key and\r
140 * signature formats for NIST curves. Curves which do not format\r
141 * their keys or signatures in this way just have name==NULL.\r
142 *\r
143 * 'textname' is non-NULL for all curves, and is a human-readable\r
144 * identification suitable for putting in log messages. */\r
145 const char *name, *textname;\r
146 unsigned int fieldBits;\r
147 Bignum p;\r
148 union {\r
149 struct ec_wcurve w;\r
150 struct ec_mcurve m;\r
151 struct ec_ecurve e;\r
152 };\r
153 };\r
154 \r
155 const struct ssh_signkey *ec_alg_by_oid(int len, const void *oid,\r
156 const struct ec_curve **curve);\r
157 const unsigned char *ec_alg_oid(const struct ssh_signkey *alg, int *oidlen);\r
158 extern const int ec_nist_curve_lengths[], n_ec_nist_curve_lengths;\r
159 int ec_nist_alg_and_curve_by_bits(int bits,\r
160 const struct ec_curve **curve,\r
161 const struct ssh_signkey **alg);\r
162 int ec_ed_alg_and_curve_by_bits(int bits,\r
163 const struct ec_curve **curve,\r
164 const struct ssh_signkey **alg);\r
165 \r
166 struct ssh_signkey;\r
167 \r
168 struct ec_key {\r
169 const struct ssh_signkey *signalg;\r
170 struct ec_point publicKey;\r
171 Bignum privateKey;\r
172 };\r
173 \r
174 struct ec_point *ec_public(const Bignum privateKey, const struct ec_curve *curve);\r
175 \r
176 int makekey(const unsigned char *data, int len, struct RSAKey *result,\r
177 const unsigned char **keystr, int order);\r
178 int makeprivate(const unsigned char *data, int len, struct RSAKey *result);\r
179 int rsaencrypt(unsigned char *data, int length, struct RSAKey *key);\r
180 Bignum rsadecrypt(Bignum input, struct RSAKey *key);\r
181 void rsasign(unsigned char *data, int length, struct RSAKey *key);\r
182 void rsasanitise(struct RSAKey *key);\r
183 int rsastr_len(struct RSAKey *key);\r
184 void rsastr_fmt(char *str, struct RSAKey *key);\r
185 void rsa_fingerprint(char *str, int len, struct RSAKey *key);\r
186 int rsa_verify(struct RSAKey *key);\r
187 unsigned char *rsa_public_blob(struct RSAKey *key, int *len);\r
188 int rsa_public_blob_len(void *data, int maxlen);\r
189 void freersakey(struct RSAKey *key);\r
190 \r
191 #ifndef PUTTY_UINT32_DEFINED\r
192 /* This makes assumptions about the int type. */\r
193 typedef unsigned int uint32;\r
194 #define PUTTY_UINT32_DEFINED\r
195 #endif\r
196 typedef uint32 word32;\r
197 \r
198 unsigned long crc32_compute(const void *s, size_t len);\r
199 unsigned long crc32_update(unsigned long crc_input, const void *s, size_t len);\r
200 \r
201 /* SSH CRC compensation attack detector */\r
202 void *crcda_make_context(void);\r
203 void crcda_free_context(void *handle);\r
204 int detect_attack(void *handle, unsigned char *buf, uint32 len,\r
205 unsigned char *IV);\r
206 \r
207 /*\r
208 * SSH2 RSA key exchange functions\r
209 */\r
210 struct ssh_hash;\r
211 void *ssh_rsakex_newkey(char *data, int len);\r
212 void ssh_rsakex_freekey(void *key);\r
213 int ssh_rsakex_klen(void *key);\r
214 void ssh_rsakex_encrypt(const struct ssh_hash *h, unsigned char *in, int inlen,\r
215 unsigned char *out, int outlen,\r
216 void *key);\r
217 \r
218 /*\r
219 * SSH2 ECDH key exchange functions\r
220 */\r
221 struct ssh_kex;\r
222 const char *ssh_ecdhkex_curve_textname(const struct ssh_kex *kex);\r
223 void *ssh_ecdhkex_newkey(const struct ssh_kex *kex);\r
224 void ssh_ecdhkex_freekey(void *key);\r
225 char *ssh_ecdhkex_getpublic(void *key, int *len);\r
226 Bignum ssh_ecdhkex_getkey(void *key, char *remoteKey, int remoteKeyLen);\r
227 \r
228 /*\r
229 * Helper function for k generation in DSA, reused in ECDSA\r
230 */\r
231 Bignum *dss_gen_k(const char *id_string, Bignum modulus, Bignum private_key,\r
232 unsigned char *digest, int digest_len);\r
233 \r
234 typedef struct {\r
235 uint32 h[4];\r
236 } MD5_Core_State;\r
237 \r
238 struct MD5Context {\r
239 #ifdef MSCRYPTOAPI\r
240 unsigned long hHash;\r
241 #else\r
242 MD5_Core_State core;\r
243 unsigned char block[64];\r
244 int blkused;\r
245 uint32 lenhi, lenlo;\r
246 #endif\r
247 };\r
248 \r
249 void MD5Init(struct MD5Context *context);\r
250 void MD5Update(struct MD5Context *context, unsigned char const *buf,\r
251 unsigned len);\r
252 void MD5Final(unsigned char digest[16], struct MD5Context *context);\r
253 void MD5Simple(void const *p, unsigned len, unsigned char output[16]);\r
254 \r
255 void *hmacmd5_make_context(void *);\r
256 void hmacmd5_free_context(void *handle);\r
257 void hmacmd5_key(void *handle, void const *key, int len);\r
258 void hmacmd5_do_hmac(void *handle, unsigned char const *blk, int len,\r
259 unsigned char *hmac);\r
260 \r
261 typedef struct {\r
262 uint32 h[5];\r
263 unsigned char block[64];\r
264 int blkused;\r
265 uint32 lenhi, lenlo;\r
266 } SHA_State;\r
267 void SHA_Init(SHA_State * s);\r
268 void SHA_Bytes(SHA_State * s, const void *p, int len);\r
269 void SHA_Final(SHA_State * s, unsigned char *output);\r
270 void SHA_Simple(const void *p, int len, unsigned char *output);\r
271 \r
272 void hmac_sha1_simple(void *key, int keylen, void *data, int datalen,\r
273 unsigned char *output);\r
274 typedef struct {\r
275 uint32 h[8];\r
276 unsigned char block[64];\r
277 int blkused;\r
278 uint32 lenhi, lenlo;\r
279 } SHA256_State;\r
280 void SHA256_Init(SHA256_State * s);\r
281 void SHA256_Bytes(SHA256_State * s, const void *p, int len);\r
282 void SHA256_Final(SHA256_State * s, unsigned char *output);\r
283 void SHA256_Simple(const void *p, int len, unsigned char *output);\r
284 \r
285 typedef struct {\r
286 uint64 h[8];\r
287 unsigned char block[128];\r
288 int blkused;\r
289 uint32 len[4];\r
290 } SHA512_State;\r
291 #define SHA384_State SHA512_State\r
292 void SHA512_Init(SHA512_State * s);\r
293 void SHA512_Bytes(SHA512_State * s, const void *p, int len);\r
294 void SHA512_Final(SHA512_State * s, unsigned char *output);\r
295 void SHA512_Simple(const void *p, int len, unsigned char *output);\r
296 void SHA384_Init(SHA384_State * s);\r
297 #define SHA384_Bytes(s, p, len) SHA512_Bytes(s, p, len)\r
298 void SHA384_Final(SHA384_State * s, unsigned char *output);\r
299 void SHA384_Simple(const void *p, int len, unsigned char *output);\r
300 \r
301 struct ssh_mac;\r
302 struct ssh_cipher {\r
303 void *(*make_context)(void);\r
304 void (*free_context)(void *);\r
305 void (*sesskey) (void *, unsigned char *key); /* for SSH-1 */\r
306 void (*encrypt) (void *, unsigned char *blk, int len);\r
307 void (*decrypt) (void *, unsigned char *blk, int len);\r
308 int blksize;\r
309 const char *text_name;\r
310 };\r
311 \r
312 struct ssh2_cipher {\r
313 void *(*make_context)(void);\r
314 void (*free_context)(void *);\r
315 void (*setiv) (void *, unsigned char *key); /* for SSH-2 */\r
316 void (*setkey) (void *, unsigned char *key);/* for SSH-2 */\r
317 void (*encrypt) (void *, unsigned char *blk, int len);\r
318 void (*decrypt) (void *, unsigned char *blk, int len);\r
319 /* Ignored unless SSH_CIPHER_SEPARATE_LENGTH flag set */\r
320 void (*encrypt_length) (void *, unsigned char *blk, int len, unsigned long seq);\r
321 void (*decrypt_length) (void *, unsigned char *blk, int len, unsigned long seq);\r
322 const char *name;\r
323 int blksize;\r
324 /* real_keybits is the number of bits of entropy genuinely used by\r
325 * the cipher scheme; it's used for deciding how big a\r
326 * Diffie-Hellman group is needed to exchange a key for the\r
327 * cipher. */\r
328 int real_keybits;\r
329 /* padded_keybytes is the number of bytes of key data expected as\r
330 * input to the setkey function; it's used for deciding how much\r
331 * data needs to be generated from the post-kex generation of key\r
332 * material. In a sensible cipher which uses all its key bytes for\r
333 * real work, this will just be real_keybits/8, but in DES-type\r
334 * ciphers which ignore one bit in each byte, it'll be slightly\r
335 * different. */\r
336 int padded_keybytes;\r
337 unsigned int flags;\r
338 #define SSH_CIPHER_IS_CBC 1\r
339 #define SSH_CIPHER_SEPARATE_LENGTH 2\r
340 const char *text_name;\r
341 /* If set, this takes priority over other MAC. */\r
342 const struct ssh_mac *required_mac;\r
343 };\r
344 \r
345 struct ssh2_ciphers {\r
346 int nciphers;\r
347 const struct ssh2_cipher *const *list;\r
348 };\r
349 \r
350 struct ssh_mac {\r
351 /* Passes in the cipher context */\r
352 void *(*make_context)(void *);\r
353 void (*free_context)(void *);\r
354 void (*setkey) (void *, unsigned char *key);\r
355 /* whole-packet operations */\r
356 void (*generate) (void *, unsigned char *blk, int len, unsigned long seq);\r
357 int (*verify) (void *, unsigned char *blk, int len, unsigned long seq);\r
358 /* partial-packet operations */\r
359 void (*start) (void *);\r
360 void (*bytes) (void *, unsigned char const *, int);\r
361 void (*genresult) (void *, unsigned char *);\r
362 int (*verresult) (void *, unsigned char const *);\r
363 const char *name, *etm_name;\r
364 int len, keylen;\r
365 const char *text_name;\r
366 };\r
367 \r
368 struct ssh_hash {\r
369 void *(*init)(void); /* also allocates context */\r
370 void *(*copy)(const void *);\r
371 void (*bytes)(void *, const void *, int);\r
372 void (*final)(void *, unsigned char *); /* also frees context */\r
373 void (*free)(void *);\r
374 int hlen; /* output length in bytes */\r
375 const char *text_name;\r
376 }; \r
377 \r
378 struct ssh_kex {\r
379 const char *name, *groupname;\r
380 enum { KEXTYPE_DH, KEXTYPE_RSA, KEXTYPE_ECDH } main_type;\r
381 const struct ssh_hash *hash;\r
382 const void *extra; /* private to the kex methods */\r
383 };\r
384 \r
385 struct ssh_kexes {\r
386 int nkexes;\r
387 const struct ssh_kex *const *list;\r
388 };\r
389 \r
390 struct ssh_signkey {\r
391 void *(*newkey) (const struct ssh_signkey *self,\r
392 const char *data, int len);\r
393 void (*freekey) (void *key);\r
394 char *(*fmtkey) (void *key);\r
395 unsigned char *(*public_blob) (void *key, int *len);\r
396 unsigned char *(*private_blob) (void *key, int *len);\r
397 void *(*createkey) (const struct ssh_signkey *self,\r
398 const unsigned char *pub_blob, int pub_len,\r
399 const unsigned char *priv_blob, int priv_len);\r
400 void *(*openssh_createkey) (const struct ssh_signkey *self,\r
401 const unsigned char **blob, int *len);\r
402 int (*openssh_fmtkey) (void *key, unsigned char *blob, int len);\r
403 /* OpenSSH private key blobs, as created by openssh_fmtkey and\r
404 * consumed by openssh_createkey, always (at least so far...) take\r
405 * the form of a number of SSH-2 strings / mpints concatenated\r
406 * end-to-end. Because the new-style OpenSSH private key format\r
407 * stores those blobs without a containing string wrapper, we need\r
408 * to know how many strings each one consists of, so that we can\r
409 * skip over the right number to find the next key in the file.\r
410 * openssh_private_npieces gives that information. */\r
411 int openssh_private_npieces;\r
412 int (*pubkey_bits) (const struct ssh_signkey *self,\r
413 const void *blob, int len);\r
414 int (*verifysig) (void *key, const char *sig, int siglen,\r
415 const char *data, int datalen);\r
416 unsigned char *(*sign) (void *key, const char *data, int datalen,\r
417 int *siglen);\r
418 const char *name;\r
419 const char *keytype; /* for host key cache */\r
420 const void *extra; /* private to the public key methods */\r
421 };\r
422 \r
423 struct ssh_compress {\r
424 const char *name;\r
425 /* For zlib@openssh.com: if non-NULL, this name will be considered once\r
426 * userauth has completed successfully. */\r
427 const char *delayed_name;\r
428 void *(*compress_init) (void);\r
429 void (*compress_cleanup) (void *);\r
430 int (*compress) (void *, unsigned char *block, int len,\r
431 unsigned char **outblock, int *outlen);\r
432 void *(*decompress_init) (void);\r
433 void (*decompress_cleanup) (void *);\r
434 int (*decompress) (void *, unsigned char *block, int len,\r
435 unsigned char **outblock, int *outlen);\r
436 int (*disable_compression) (void *);\r
437 const char *text_name;\r
438 };\r
439 \r
440 struct ssh2_userkey {\r
441 const struct ssh_signkey *alg; /* the key algorithm */\r
442 void *data; /* the key data */\r
443 char *comment; /* the key comment */\r
444 };\r
445 \r
446 /* The maximum length of any hash algorithm used in kex. (bytes) */\r
447 #define SSH2_KEX_MAX_HASH_LEN (64) /* SHA-512 */\r
448 \r
449 extern const struct ssh_cipher ssh_3des;\r
450 extern const struct ssh_cipher ssh_des;\r
451 extern const struct ssh_cipher ssh_blowfish_ssh1;\r
452 extern const struct ssh2_ciphers ssh2_3des;\r
453 extern const struct ssh2_ciphers ssh2_des;\r
454 extern const struct ssh2_ciphers ssh2_aes;\r
455 extern const struct ssh2_ciphers ssh2_blowfish;\r
456 extern const struct ssh2_ciphers ssh2_arcfour;\r
457 extern const struct ssh2_ciphers ssh2_ccp;\r
458 extern const struct ssh_hash ssh_sha1;\r
459 extern const struct ssh_hash ssh_sha256;\r
460 extern const struct ssh_hash ssh_sha384;\r
461 extern const struct ssh_hash ssh_sha512;\r
462 extern const struct ssh_kexes ssh_diffiehellman_group1;\r
463 extern const struct ssh_kexes ssh_diffiehellman_group14;\r
464 extern const struct ssh_kexes ssh_diffiehellman_gex;\r
465 extern const struct ssh_kexes ssh_rsa_kex;\r
466 extern const struct ssh_kexes ssh_ecdh_kex;\r
467 extern const struct ssh_signkey ssh_dss;\r
468 extern const struct ssh_signkey ssh_rsa;\r
469 extern const struct ssh_signkey ssh_ecdsa_ed25519;\r
470 extern const struct ssh_signkey ssh_ecdsa_nistp256;\r
471 extern const struct ssh_signkey ssh_ecdsa_nistp384;\r
472 extern const struct ssh_signkey ssh_ecdsa_nistp521;\r
473 extern const struct ssh_mac ssh_hmac_md5;\r
474 extern const struct ssh_mac ssh_hmac_sha1;\r
475 extern const struct ssh_mac ssh_hmac_sha1_buggy;\r
476 extern const struct ssh_mac ssh_hmac_sha1_96;\r
477 extern const struct ssh_mac ssh_hmac_sha1_96_buggy;\r
478 extern const struct ssh_mac ssh_hmac_sha256;\r
479 \r
480 void *aes_make_context(void);\r
481 void aes_free_context(void *handle);\r
482 void aes128_key(void *handle, unsigned char *key);\r
483 void aes192_key(void *handle, unsigned char *key);\r
484 void aes256_key(void *handle, unsigned char *key);\r
485 void aes_iv(void *handle, unsigned char *iv);\r
486 void aes_ssh2_encrypt_blk(void *handle, unsigned char *blk, int len);\r
487 void aes_ssh2_decrypt_blk(void *handle, unsigned char *blk, int len);\r
488 \r
489 /*\r
490 * PuTTY version number formatted as an SSH version string. \r
491 */\r
492 extern const char sshver[];\r
493 \r
494 /*\r
495 * Gross hack: pscp will try to start SFTP but fall back to scp1 if\r
496 * that fails. This variable is the means by which scp.c can reach\r
497 * into the SSH code and find out which one it got.\r
498 */\r
499 extern int ssh_fallback_cmd(void *handle);\r
500 \r
501 #ifndef MSCRYPTOAPI\r
502 void SHATransform(word32 * digest, word32 * data);\r
503 #endif\r
504 \r
505 int random_byte(void);\r
506 void random_add_noise(void *noise, int length);\r
507 void random_add_heavynoise(void *noise, int length);\r
508 \r
509 void logevent(void *, const char *);\r
510 \r
511 struct PortForwarding;\r
512 \r
513 /* Allocate and register a new channel for port forwarding */\r
514 void *new_sock_channel(void *handle, struct PortForwarding *pf);\r
515 void ssh_send_port_open(void *channel, const char *hostname, int port,\r
516 const char *org);\r
517 \r
518 /* Exports from portfwd.c */\r
519 extern char *pfd_connect(struct PortForwarding **pf, char *hostname, int port,\r
520 void *c, Conf *conf, int addressfamily);\r
521 extern void pfd_close(struct PortForwarding *);\r
522 extern int pfd_send(struct PortForwarding *, char *data, int len);\r
523 extern void pfd_send_eof(struct PortForwarding *);\r
524 extern void pfd_confirm(struct PortForwarding *);\r
525 extern void pfd_unthrottle(struct PortForwarding *);\r
526 extern void pfd_override_throttle(struct PortForwarding *, int enable);\r
527 struct PortListener;\r
528 /* desthost == NULL indicates dynamic (SOCKS) port forwarding */\r
529 extern char *pfl_listen(char *desthost, int destport, char *srcaddr,\r
530 int port, void *backhandle, Conf *conf,\r
531 struct PortListener **pl, int address_family);\r
532 extern void pfl_terminate(struct PortListener *);\r
533 \r
534 /* Exports from x11fwd.c */\r
535 enum {\r
536 X11_TRANS_IPV4 = 0, X11_TRANS_IPV6 = 6, X11_TRANS_UNIX = 256\r
537 };\r
538 struct X11Display {\r
539 /* Broken-down components of the display name itself */\r
540 int unixdomain;\r
541 char *hostname;\r
542 int displaynum;\r
543 int screennum;\r
544 /* OSX sometimes replaces all the above with a full Unix-socket pathname */\r
545 char *unixsocketpath;\r
546 \r
547 /* PuTTY networking SockAddr to connect to the display, and associated\r
548 * gubbins */\r
549 SockAddr addr;\r
550 int port;\r
551 char *realhost;\r
552 \r
553 /* Our local auth details for talking to the real X display. */\r
554 int localauthproto;\r
555 unsigned char *localauthdata;\r
556 int localauthdatalen;\r
557 };\r
558 struct X11FakeAuth {\r
559 /* Auth details we invented for a virtual display on the SSH server. */\r
560 int proto;\r
561 unsigned char *data;\r
562 int datalen;\r
563 char *protoname;\r
564 char *datastring;\r
565 \r
566 /* The encrypted form of the first block, in XDM-AUTHORIZATION-1.\r
567 * Used as part of the key when these structures are organised\r
568 * into a tree. See x11_invent_fake_auth for explanation. */\r
569 unsigned char *xa1_firstblock;\r
570 \r
571 /*\r
572 * Used inside x11fwd.c to remember recently seen\r
573 * XDM-AUTHORIZATION-1 strings, to avoid replay attacks.\r
574 */\r
575 tree234 *xdmseen;\r
576 \r
577 /*\r
578 * What to do with an X connection matching this auth data.\r
579 */\r
580 struct X11Display *disp;\r
581 void *share_cs, *share_chan;\r
582 };\r
583 void *x11_make_greeting(int endian, int protomajor, int protominor,\r
584 int auth_proto, const void *auth_data, int auth_len,\r
585 const char *peer_ip, int peer_port,\r
586 int *outlen);\r
587 int x11_authcmp(void *av, void *bv); /* for putting X11FakeAuth in a tree234 */\r
588 /*\r
589 * x11_setup_display() parses the display variable and fills in an\r
590 * X11Display structure. Some remote auth details are invented;\r
591 * the supplied authtype parameter configures the preferred\r
592 * authorisation protocol to use at the remote end. The local auth\r
593 * details are looked up by calling platform_get_x11_auth.\r
594 */\r
595 extern struct X11Display *x11_setup_display(const char *display, Conf *);\r
596 void x11_free_display(struct X11Display *disp);\r
597 struct X11FakeAuth *x11_invent_fake_auth(tree234 *t, int authtype);\r
598 void x11_free_fake_auth(struct X11FakeAuth *auth);\r
599 struct X11Connection; /* opaque outside x11fwd.c */\r
600 struct X11Connection *x11_init(tree234 *authtree, void *, const char *, int);\r
601 extern void x11_close(struct X11Connection *);\r
602 extern int x11_send(struct X11Connection *, char *, int);\r
603 extern void x11_send_eof(struct X11Connection *s);\r
604 extern void x11_unthrottle(struct X11Connection *s);\r
605 extern void x11_override_throttle(struct X11Connection *s, int enable);\r
606 char *x11_display(const char *display);\r
607 /* Platform-dependent X11 functions */\r
608 extern void platform_get_x11_auth(struct X11Display *display, Conf *);\r
609 /* examine a mostly-filled-in X11Display and fill in localauth* */\r
610 extern const int platform_uses_x11_unix_by_default;\r
611 /* choose default X transport in the absence of a specified one */\r
612 SockAddr platform_get_x11_unix_address(const char *path, int displaynum);\r
613 /* make up a SockAddr naming the address for displaynum */\r
614 char *platform_get_x_display(void);\r
615 /* allocated local X display string, if any */\r
616 /* Callbacks in x11.c usable _by_ platform X11 functions */\r
617 /*\r
618 * This function does the job of platform_get_x11_auth, provided\r
619 * it is told where to find a normally formatted .Xauthority file:\r
620 * it opens that file, parses it to find an auth record which\r
621 * matches the display details in "display", and fills in the\r
622 * localauth fields.\r
623 *\r
624 * It is expected that most implementations of\r
625 * platform_get_x11_auth() will work by finding their system's\r
626 * .Xauthority file, adjusting the display details if necessary\r
627 * for local oddities like Unix-domain socket transport, and\r
628 * calling this function to do the rest of the work.\r
629 */\r
630 void x11_get_auth_from_authfile(struct X11Display *display,\r
631 const char *authfilename);\r
632 int x11_identify_auth_proto(const char *proto);\r
633 void *x11_dehexify(const char *hex, int *outlen);\r
634 \r
635 Bignum copybn(Bignum b);\r
636 Bignum bn_power_2(int n);\r
637 void bn_restore_invariant(Bignum b);\r
638 Bignum bignum_from_long(unsigned long n);\r
639 void freebn(Bignum b);\r
640 Bignum modpow(Bignum base, Bignum exp, Bignum mod);\r
641 Bignum modmul(Bignum a, Bignum b, Bignum mod);\r
642 Bignum modsub(const Bignum a, const Bignum b, const Bignum n);\r
643 void decbn(Bignum n);\r
644 extern Bignum Zero, One;\r
645 Bignum bignum_from_bytes(const unsigned char *data, int nbytes);\r
646 Bignum bignum_from_bytes_le(const unsigned char *data, int nbytes);\r
647 Bignum bignum_random_in_range(const Bignum lower, const Bignum upper);\r
648 int ssh1_read_bignum(const unsigned char *data, int len, Bignum * result);\r
649 int bignum_bitcount(Bignum bn);\r
650 int ssh1_bignum_length(Bignum bn);\r
651 int ssh2_bignum_length(Bignum bn);\r
652 int bignum_byte(Bignum bn, int i);\r
653 int bignum_bit(Bignum bn, int i);\r
654 void bignum_set_bit(Bignum bn, int i, int value);\r
655 int ssh1_write_bignum(void *data, Bignum bn);\r
656 Bignum biggcd(Bignum a, Bignum b);\r
657 unsigned short bignum_mod_short(Bignum number, unsigned short modulus);\r
658 Bignum bignum_add_long(Bignum number, unsigned long addend);\r
659 Bignum bigadd(Bignum a, Bignum b);\r
660 Bignum bigsub(Bignum a, Bignum b);\r
661 Bignum bigmul(Bignum a, Bignum b);\r
662 Bignum bigmuladd(Bignum a, Bignum b, Bignum addend);\r
663 Bignum bigdiv(Bignum a, Bignum b);\r
664 Bignum bigmod(Bignum a, Bignum b);\r
665 Bignum modinv(Bignum number, Bignum modulus);\r
666 Bignum bignum_bitmask(Bignum number);\r
667 Bignum bignum_rshift(Bignum number, int shift);\r
668 Bignum bignum_lshift(Bignum number, int shift);\r
669 int bignum_cmp(Bignum a, Bignum b);\r
670 char *bignum_decimal(Bignum x);\r
671 Bignum bignum_from_decimal(const char *decimal);\r
672 \r
673 #ifdef DEBUG\r
674 void diagbn(char *prefix, Bignum md);\r
675 #endif\r
676 \r
677 int dh_is_gex(const struct ssh_kex *kex);\r
678 void *dh_setup_group(const struct ssh_kex *kex);\r
679 void *dh_setup_gex(Bignum pval, Bignum gval);\r
680 void dh_cleanup(void *);\r
681 Bignum dh_create_e(void *, int nbits);\r
682 const char *dh_validate_f(void *handle, Bignum f);\r
683 Bignum dh_find_K(void *, Bignum f);\r
684 \r
685 int loadrsakey(const Filename *filename, struct RSAKey *key,\r
686 const char *passphrase, const char **errorstr);\r
687 int rsakey_encrypted(const Filename *filename, char **comment);\r
688 int rsakey_pubblob(const Filename *filename, void **blob, int *bloblen,\r
689 char **commentptr, const char **errorstr);\r
690 \r
691 int saversakey(const Filename *filename, struct RSAKey *key, char *passphrase);\r
692 \r
693 extern int base64_decode_atom(const char *atom, unsigned char *out);\r
694 extern int base64_lines(int datalen);\r
695 extern void base64_encode_atom(const unsigned char *data, int n, char *out);\r
696 extern void base64_encode(FILE *fp, const unsigned char *data, int datalen,\r
697 int cpl);\r
698 \r
699 /* ssh2_load_userkey can return this as an error */\r
700 extern struct ssh2_userkey ssh2_wrong_passphrase;\r
701 #define SSH2_WRONG_PASSPHRASE (&ssh2_wrong_passphrase)\r
702 \r
703 int ssh2_userkey_encrypted(const Filename *filename, char **comment);\r
704 struct ssh2_userkey *ssh2_load_userkey(const Filename *filename,\r
705 const char *passphrase,\r
706 const char **errorstr);\r
707 unsigned char *ssh2_userkey_loadpub(const Filename *filename, char **algorithm,\r
708 int *pub_blob_len, char **commentptr,\r
709 const char **errorstr);\r
710 int ssh2_save_userkey(const Filename *filename, struct ssh2_userkey *key,\r
711 char *passphrase);\r
712 const struct ssh_signkey *find_pubkey_alg(const char *name);\r
713 const struct ssh_signkey *find_pubkey_alg_len(int namelen, const char *name);\r
714 \r
715 enum {\r
716 SSH_KEYTYPE_UNOPENABLE,\r
717 SSH_KEYTYPE_UNKNOWN,\r
718 SSH_KEYTYPE_SSH1, SSH_KEYTYPE_SSH2,\r
719 /*\r
720 * The OpenSSH key types deserve a little explanation. OpenSSH has\r
721 * two physical formats for private key storage: an old PEM-based\r
722 * one largely dictated by their use of OpenSSL and full of ASN.1,\r
723 * and a new one using the same private key formats used over the\r
724 * wire for talking to ssh-agent. The old format can only support\r
725 * a subset of the key types, because it needs redesign for each\r
726 * key type, and after a while they decided to move to the new\r
727 * format so as not to have to do that.\r
728 *\r
729 * On input, key files are identified as either\r
730 * SSH_KEYTYPE_OPENSSH_PEM or SSH_KEYTYPE_OPENSSH_NEW, describing\r
731 * accurately which actual format the keys are stored in.\r
732 *\r
733 * On output, however, we default to following OpenSSH's own\r
734 * policy of writing out PEM-style keys for maximum backwards\r
735 * compatibility if the key type supports it, and otherwise\r
736 * switching to the new format. So the formats you can select for\r
737 * output are SSH_KEYTYPE_OPENSSH_NEW (forcing the new format for\r
738 * any key type), and SSH_KEYTYPE_OPENSSH_AUTO to use the oldest\r
739 * format supported by whatever key type you're writing out.\r
740 *\r
741 * So we have three type codes, but only two of them usable in any\r
742 * given circumstance. An input key file will never be identified\r
743 * as AUTO, only PEM or NEW; key export UIs should not be able to\r
744 * select PEM, only AUTO or NEW.\r
745 */\r
746 SSH_KEYTYPE_OPENSSH_AUTO,\r
747 SSH_KEYTYPE_OPENSSH_PEM,\r
748 SSH_KEYTYPE_OPENSSH_NEW,\r
749 SSH_KEYTYPE_SSHCOM,\r
750 /*\r
751 * Public-key-only formats, which we still want to be able to read\r
752 * for various purposes.\r
753 */\r
754 SSH_KEYTYPE_SSH1_PUBLIC,\r
755 SSH_KEYTYPE_SSH2_PUBLIC_RFC4716,\r
756 SSH_KEYTYPE_SSH2_PUBLIC_OPENSSH\r
757 };\r
758 char *ssh1_pubkey_str(struct RSAKey *ssh1key);\r
759 void ssh1_write_pubkey(FILE *fp, struct RSAKey *ssh1key);\r
760 char *ssh2_pubkey_openssh_str(struct ssh2_userkey *key);\r
761 void ssh2_write_pubkey(FILE *fp, const char *comment,\r
762 const void *v_pub_blob, int pub_len,\r
763 int keytype);\r
764 char *ssh2_fingerprint_blob(const void *blob, int bloblen);\r
765 char *ssh2_fingerprint(const struct ssh_signkey *alg, void *data);\r
766 int key_type(const Filename *filename);\r
767 const char *key_type_to_str(int type);\r
768 \r
769 int import_possible(int type);\r
770 int import_target_type(int type);\r
771 int import_encrypted(const Filename *filename, int type, char **comment);\r
772 int import_ssh1(const Filename *filename, int type,\r
773 struct RSAKey *key, char *passphrase, const char **errmsg_p);\r
774 struct ssh2_userkey *import_ssh2(const Filename *filename, int type,\r
775 char *passphrase, const char **errmsg_p);\r
776 int export_ssh1(const Filename *filename, int type,\r
777 struct RSAKey *key, char *passphrase);\r
778 int export_ssh2(const Filename *filename, int type,\r
779 struct ssh2_userkey *key, char *passphrase);\r
780 \r
781 void des3_decrypt_pubkey(unsigned char *key, unsigned char *blk, int len);\r
782 void des3_encrypt_pubkey(unsigned char *key, unsigned char *blk, int len);\r
783 void des3_decrypt_pubkey_ossh(unsigned char *key, unsigned char *iv,\r
784 unsigned char *blk, int len);\r
785 void des3_encrypt_pubkey_ossh(unsigned char *key, unsigned char *iv,\r
786 unsigned char *blk, int len);\r
787 void aes256_encrypt_pubkey(unsigned char *key, unsigned char *blk,\r
788 int len);\r
789 void aes256_decrypt_pubkey(unsigned char *key, unsigned char *blk,\r
790 int len);\r
791 \r
792 void des_encrypt_xdmauth(const unsigned char *key,\r
793 unsigned char *blk, int len);\r
794 void des_decrypt_xdmauth(const unsigned char *key,\r
795 unsigned char *blk, int len);\r
796 \r
797 void openssh_bcrypt(const char *passphrase,\r
798 const unsigned char *salt, int saltbytes,\r
799 int rounds, unsigned char *out, int outbytes);\r
800 \r
801 /*\r
802 * For progress updates in the key generation utility.\r
803 */\r
804 #define PROGFN_INITIALISE 1\r
805 #define PROGFN_LIN_PHASE 2\r
806 #define PROGFN_EXP_PHASE 3\r
807 #define PROGFN_PHASE_EXTENT 4\r
808 #define PROGFN_READY 5\r
809 #define PROGFN_PROGRESS 6\r
810 typedef void (*progfn_t) (void *param, int action, int phase, int progress);\r
811 \r
812 int rsa_generate(struct RSAKey *key, int bits, progfn_t pfn,\r
813 void *pfnparam);\r
814 int dsa_generate(struct dss_key *key, int bits, progfn_t pfn,\r
815 void *pfnparam);\r
816 int ec_generate(struct ec_key *key, int bits, progfn_t pfn,\r
817 void *pfnparam);\r
818 int ec_edgenerate(struct ec_key *key, int bits, progfn_t pfn,\r
819 void *pfnparam);\r
820 Bignum primegen(int bits, int modulus, int residue, Bignum factor,\r
821 int phase, progfn_t pfn, void *pfnparam, unsigned firstbits);\r
822 void invent_firstbits(unsigned *one, unsigned *two);\r
823 \r
824 \r
825 /*\r
826 * zlib compression.\r
827 */\r
828 void *zlib_compress_init(void);\r
829 void zlib_compress_cleanup(void *);\r
830 void *zlib_decompress_init(void);\r
831 void zlib_decompress_cleanup(void *);\r
832 int zlib_compress_block(void *, unsigned char *block, int len,\r
833 unsigned char **outblock, int *outlen);\r
834 int zlib_decompress_block(void *, unsigned char *block, int len,\r
835 unsigned char **outblock, int *outlen);\r
836 \r
837 /*\r
838 * Connection-sharing API provided by platforms. This function must\r
839 * either:\r
840 * - return SHARE_NONE and do nothing\r
841 * - return SHARE_DOWNSTREAM and set *sock to a Socket connected to\r
842 * downplug\r
843 * - return SHARE_UPSTREAM and set *sock to a Socket connected to\r
844 * upplug.\r
845 */\r
846 enum { SHARE_NONE, SHARE_DOWNSTREAM, SHARE_UPSTREAM };\r
847 int platform_ssh_share(const char *name, Conf *conf,\r
848 Plug downplug, Plug upplug, Socket *sock,\r
849 char **logtext, char **ds_err, char **us_err,\r
850 int can_upstream, int can_downstream);\r
851 void platform_ssh_share_cleanup(const char *name);\r
852 \r
853 /*\r
854 * SSH-1 message type codes.\r
855 */\r
856 #define SSH1_MSG_DISCONNECT 1 /* 0x1 */\r
857 #define SSH1_SMSG_PUBLIC_KEY 2 /* 0x2 */\r
858 #define SSH1_CMSG_SESSION_KEY 3 /* 0x3 */\r
859 #define SSH1_CMSG_USER 4 /* 0x4 */\r
860 #define SSH1_CMSG_AUTH_RSA 6 /* 0x6 */\r
861 #define SSH1_SMSG_AUTH_RSA_CHALLENGE 7 /* 0x7 */\r
862 #define SSH1_CMSG_AUTH_RSA_RESPONSE 8 /* 0x8 */\r
863 #define SSH1_CMSG_AUTH_PASSWORD 9 /* 0x9 */\r
864 #define SSH1_CMSG_REQUEST_PTY 10 /* 0xa */\r
865 #define SSH1_CMSG_WINDOW_SIZE 11 /* 0xb */\r
866 #define SSH1_CMSG_EXEC_SHELL 12 /* 0xc */\r
867 #define SSH1_CMSG_EXEC_CMD 13 /* 0xd */\r
868 #define SSH1_SMSG_SUCCESS 14 /* 0xe */\r
869 #define SSH1_SMSG_FAILURE 15 /* 0xf */\r
870 #define SSH1_CMSG_STDIN_DATA 16 /* 0x10 */\r
871 #define SSH1_SMSG_STDOUT_DATA 17 /* 0x11 */\r
872 #define SSH1_SMSG_STDERR_DATA 18 /* 0x12 */\r
873 #define SSH1_CMSG_EOF 19 /* 0x13 */\r
874 #define SSH1_SMSG_EXIT_STATUS 20 /* 0x14 */\r
875 #define SSH1_MSG_CHANNEL_OPEN_CONFIRMATION 21 /* 0x15 */\r
876 #define SSH1_MSG_CHANNEL_OPEN_FAILURE 22 /* 0x16 */\r
877 #define SSH1_MSG_CHANNEL_DATA 23 /* 0x17 */\r
878 #define SSH1_MSG_CHANNEL_CLOSE 24 /* 0x18 */\r
879 #define SSH1_MSG_CHANNEL_CLOSE_CONFIRMATION 25 /* 0x19 */\r
880 #define SSH1_SMSG_X11_OPEN 27 /* 0x1b */\r
881 #define SSH1_CMSG_PORT_FORWARD_REQUEST 28 /* 0x1c */\r
882 #define SSH1_MSG_PORT_OPEN 29 /* 0x1d */\r
883 #define SSH1_CMSG_AGENT_REQUEST_FORWARDING 30 /* 0x1e */\r
884 #define SSH1_SMSG_AGENT_OPEN 31 /* 0x1f */\r
885 #define SSH1_MSG_IGNORE 32 /* 0x20 */\r
886 #define SSH1_CMSG_EXIT_CONFIRMATION 33 /* 0x21 */\r
887 #define SSH1_CMSG_X11_REQUEST_FORWARDING 34 /* 0x22 */\r
888 #define SSH1_CMSG_AUTH_RHOSTS_RSA 35 /* 0x23 */\r
889 #define SSH1_MSG_DEBUG 36 /* 0x24 */\r
890 #define SSH1_CMSG_REQUEST_COMPRESSION 37 /* 0x25 */\r
891 #define SSH1_CMSG_AUTH_TIS 39 /* 0x27 */\r
892 #define SSH1_SMSG_AUTH_TIS_CHALLENGE 40 /* 0x28 */\r
893 #define SSH1_CMSG_AUTH_TIS_RESPONSE 41 /* 0x29 */\r
894 #define SSH1_CMSG_AUTH_CCARD 70 /* 0x46 */\r
895 #define SSH1_SMSG_AUTH_CCARD_CHALLENGE 71 /* 0x47 */\r
896 #define SSH1_CMSG_AUTH_CCARD_RESPONSE 72 /* 0x48 */\r
897 \r
898 #define SSH1_AUTH_RHOSTS 1 /* 0x1 */\r
899 #define SSH1_AUTH_RSA 2 /* 0x2 */\r
900 #define SSH1_AUTH_PASSWORD 3 /* 0x3 */\r
901 #define SSH1_AUTH_RHOSTS_RSA 4 /* 0x4 */\r
902 #define SSH1_AUTH_TIS 5 /* 0x5 */\r
903 #define SSH1_AUTH_CCARD 16 /* 0x10 */\r
904 \r
905 #define SSH1_PROTOFLAG_SCREEN_NUMBER 1 /* 0x1 */\r
906 /* Mask for protoflags we will echo back to server if seen */\r
907 #define SSH1_PROTOFLAGS_SUPPORTED 0 /* 0x1 */\r
908 \r
909 /*\r
910 * SSH-2 message type codes.\r
911 */\r
912 #define SSH2_MSG_DISCONNECT 1 /* 0x1 */\r
913 #define SSH2_MSG_IGNORE 2 /* 0x2 */\r
914 #define SSH2_MSG_UNIMPLEMENTED 3 /* 0x3 */\r
915 #define SSH2_MSG_DEBUG 4 /* 0x4 */\r
916 #define SSH2_MSG_SERVICE_REQUEST 5 /* 0x5 */\r
917 #define SSH2_MSG_SERVICE_ACCEPT 6 /* 0x6 */\r
918 #define SSH2_MSG_KEXINIT 20 /* 0x14 */\r
919 #define SSH2_MSG_NEWKEYS 21 /* 0x15 */\r
920 #define SSH2_MSG_KEXDH_INIT 30 /* 0x1e */\r
921 #define SSH2_MSG_KEXDH_REPLY 31 /* 0x1f */\r
922 #define SSH2_MSG_KEX_DH_GEX_REQUEST_OLD 30 /* 0x1e */\r
923 #define SSH2_MSG_KEX_DH_GEX_REQUEST 34 /* 0x22 */\r
924 #define SSH2_MSG_KEX_DH_GEX_GROUP 31 /* 0x1f */\r
925 #define SSH2_MSG_KEX_DH_GEX_INIT 32 /* 0x20 */\r
926 #define SSH2_MSG_KEX_DH_GEX_REPLY 33 /* 0x21 */\r
927 #define SSH2_MSG_KEXRSA_PUBKEY 30 /* 0x1e */\r
928 #define SSH2_MSG_KEXRSA_SECRET 31 /* 0x1f */\r
929 #define SSH2_MSG_KEXRSA_DONE 32 /* 0x20 */\r
930 #define SSH2_MSG_KEX_ECDH_INIT 30 /* 0x1e */\r
931 #define SSH2_MSG_KEX_ECDH_REPLY 31 /* 0x1f */\r
932 #define SSH2_MSG_KEX_ECMQV_INIT 30 /* 0x1e */\r
933 #define SSH2_MSG_KEX_ECMQV_REPLY 31 /* 0x1f */\r
934 #define SSH2_MSG_USERAUTH_REQUEST 50 /* 0x32 */\r
935 #define SSH2_MSG_USERAUTH_FAILURE 51 /* 0x33 */\r
936 #define SSH2_MSG_USERAUTH_SUCCESS 52 /* 0x34 */\r
937 #define SSH2_MSG_USERAUTH_BANNER 53 /* 0x35 */\r
938 #define SSH2_MSG_USERAUTH_PK_OK 60 /* 0x3c */\r
939 #define SSH2_MSG_USERAUTH_PASSWD_CHANGEREQ 60 /* 0x3c */\r
940 #define SSH2_MSG_USERAUTH_INFO_REQUEST 60 /* 0x3c */\r
941 #define SSH2_MSG_USERAUTH_INFO_RESPONSE 61 /* 0x3d */\r
942 #define SSH2_MSG_GLOBAL_REQUEST 80 /* 0x50 */\r
943 #define SSH2_MSG_REQUEST_SUCCESS 81 /* 0x51 */\r
944 #define SSH2_MSG_REQUEST_FAILURE 82 /* 0x52 */\r
945 #define SSH2_MSG_CHANNEL_OPEN 90 /* 0x5a */\r
946 #define SSH2_MSG_CHANNEL_OPEN_CONFIRMATION 91 /* 0x5b */\r
947 #define SSH2_MSG_CHANNEL_OPEN_FAILURE 92 /* 0x5c */\r
948 #define SSH2_MSG_CHANNEL_WINDOW_ADJUST 93 /* 0x5d */\r
949 #define SSH2_MSG_CHANNEL_DATA 94 /* 0x5e */\r
950 #define SSH2_MSG_CHANNEL_EXTENDED_DATA 95 /* 0x5f */\r
951 #define SSH2_MSG_CHANNEL_EOF 96 /* 0x60 */\r
952 #define SSH2_MSG_CHANNEL_CLOSE 97 /* 0x61 */\r
953 #define SSH2_MSG_CHANNEL_REQUEST 98 /* 0x62 */\r
954 #define SSH2_MSG_CHANNEL_SUCCESS 99 /* 0x63 */\r
955 #define SSH2_MSG_CHANNEL_FAILURE 100 /* 0x64 */\r
956 #define SSH2_MSG_USERAUTH_GSSAPI_RESPONSE 60\r
957 #define SSH2_MSG_USERAUTH_GSSAPI_TOKEN 61\r
958 #define SSH2_MSG_USERAUTH_GSSAPI_EXCHANGE_COMPLETE 63\r
959 #define SSH2_MSG_USERAUTH_GSSAPI_ERROR 64\r
960 #define SSH2_MSG_USERAUTH_GSSAPI_ERRTOK 65\r
961 #define SSH2_MSG_USERAUTH_GSSAPI_MIC 66\r
962 \r
963 /*\r
964 * SSH-1 agent messages.\r
965 */\r
966 #define SSH1_AGENTC_REQUEST_RSA_IDENTITIES 1\r
967 #define SSH1_AGENT_RSA_IDENTITIES_ANSWER 2\r
968 #define SSH1_AGENTC_RSA_CHALLENGE 3\r
969 #define SSH1_AGENT_RSA_RESPONSE 4\r
970 #define SSH1_AGENTC_ADD_RSA_IDENTITY 7\r
971 #define SSH1_AGENTC_REMOVE_RSA_IDENTITY 8\r
972 #define SSH1_AGENTC_REMOVE_ALL_RSA_IDENTITIES 9 /* openssh private? */\r
973 \r
974 /*\r
975 * Messages common to SSH-1 and OpenSSH's SSH-2.\r
976 */\r
977 #define SSH_AGENT_FAILURE 5\r
978 #define SSH_AGENT_SUCCESS 6\r
979 \r
980 /*\r
981 * OpenSSH's SSH-2 agent messages.\r
982 */\r
983 #define SSH2_AGENTC_REQUEST_IDENTITIES 11\r
984 #define SSH2_AGENT_IDENTITIES_ANSWER 12\r
985 #define SSH2_AGENTC_SIGN_REQUEST 13\r
986 #define SSH2_AGENT_SIGN_RESPONSE 14\r
987 #define SSH2_AGENTC_ADD_IDENTITY 17\r
988 #define SSH2_AGENTC_REMOVE_IDENTITY 18\r
989 #define SSH2_AGENTC_REMOVE_ALL_IDENTITIES 19\r
990 \r
991 /*\r
992 * Assorted other SSH-related enumerations.\r
993 */\r
994 #define SSH2_DISCONNECT_HOST_NOT_ALLOWED_TO_CONNECT 1 /* 0x1 */\r
995 #define SSH2_DISCONNECT_PROTOCOL_ERROR 2 /* 0x2 */\r
996 #define SSH2_DISCONNECT_KEY_EXCHANGE_FAILED 3 /* 0x3 */\r
997 #define SSH2_DISCONNECT_HOST_AUTHENTICATION_FAILED 4 /* 0x4 */\r
998 #define SSH2_DISCONNECT_MAC_ERROR 5 /* 0x5 */\r
999 #define SSH2_DISCONNECT_COMPRESSION_ERROR 6 /* 0x6 */\r
1000 #define SSH2_DISCONNECT_SERVICE_NOT_AVAILABLE 7 /* 0x7 */\r
1001 #define SSH2_DISCONNECT_PROTOCOL_VERSION_NOT_SUPPORTED 8 /* 0x8 */\r
1002 #define SSH2_DISCONNECT_HOST_KEY_NOT_VERIFIABLE 9 /* 0x9 */\r
1003 #define SSH2_DISCONNECT_CONNECTION_LOST 10 /* 0xa */\r
1004 #define SSH2_DISCONNECT_BY_APPLICATION 11 /* 0xb */\r
1005 #define SSH2_DISCONNECT_TOO_MANY_CONNECTIONS 12 /* 0xc */\r
1006 #define SSH2_DISCONNECT_AUTH_CANCELLED_BY_USER 13 /* 0xd */\r
1007 #define SSH2_DISCONNECT_NO_MORE_AUTH_METHODS_AVAILABLE 14 /* 0xe */\r
1008 #define SSH2_DISCONNECT_ILLEGAL_USER_NAME 15 /* 0xf */\r
1009 \r
1010 #define SSH2_OPEN_ADMINISTRATIVELY_PROHIBITED 1 /* 0x1 */\r
1011 #define SSH2_OPEN_CONNECT_FAILED 2 /* 0x2 */\r
1012 #define SSH2_OPEN_UNKNOWN_CHANNEL_TYPE 3 /* 0x3 */\r
1013 #define SSH2_OPEN_RESOURCE_SHORTAGE 4 /* 0x4 */\r
1014 \r
1015 #define SSH2_EXTENDED_DATA_STDERR 1 /* 0x1 */\r
1016 \r
1017 /*\r
1018 * Need this to warn about support for the original SSH-2 keyfile\r
1019 * format.\r
1020 */\r
1021 void old_keyfile_warning(void);\r