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1 | #include <stdio.h> |
2 | #include <stdlib.h> |
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3 | #include <stdarg.h> |
4 | #include <assert.h> |
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5 | #include <winsock.h> |
6 | |
7 | #include "putty.h" |
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8 | #include "ssh.h" |
9 | #include "scp.h" |
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10 | |
11 | #ifndef FALSE |
12 | #define FALSE 0 |
13 | #endif |
14 | #ifndef TRUE |
15 | #define TRUE 1 |
16 | #endif |
17 | |
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18 | #define logevent(s) { logevent(s); \ |
19 | if (IS_SCP && (scp_flags & SCP_VERBOSE) != 0) \ |
20 | fprintf(stderr, "%s\n", s); } |
21 | |
22 | #define SSH_MSG_DISCONNECT 1 |
23 | #define SSH_SMSG_PUBLIC_KEY 2 |
24 | #define SSH_CMSG_SESSION_KEY 3 |
25 | #define SSH_CMSG_USER 4 |
26 | #define SSH_CMSG_AUTH_PASSWORD 9 |
27 | #define SSH_CMSG_REQUEST_PTY 10 |
28 | #define SSH_CMSG_WINDOW_SIZE 11 |
29 | #define SSH_CMSG_EXEC_SHELL 12 |
30 | #define SSH_CMSG_EXEC_CMD 13 |
31 | #define SSH_SMSG_SUCCESS 14 |
32 | #define SSH_SMSG_FAILURE 15 |
33 | #define SSH_CMSG_STDIN_DATA 16 |
34 | #define SSH_SMSG_STDOUT_DATA 17 |
35 | #define SSH_SMSG_STDERR_DATA 18 |
36 | #define SSH_CMSG_EOF 19 |
37 | #define SSH_SMSG_EXIT_STATUS 20 |
38 | #define SSH_CMSG_EXIT_CONFIRMATION 33 |
39 | #define SSH_MSG_IGNORE 32 |
40 | #define SSH_MSG_DEBUG 36 |
41 | #define SSH_CMSG_AUTH_TIS 39 |
42 | #define SSH_SMSG_AUTH_TIS_CHALLENGE 40 |
43 | #define SSH_CMSG_AUTH_TIS_RESPONSE 41 |
44 | |
45 | #define SSH_AUTH_TIS 5 |
46 | |
47 | #define GET_32BIT(cp) \ |
48 | (((unsigned long)(unsigned char)(cp)[0] << 24) | \ |
49 | ((unsigned long)(unsigned char)(cp)[1] << 16) | \ |
50 | ((unsigned long)(unsigned char)(cp)[2] << 8) | \ |
51 | ((unsigned long)(unsigned char)(cp)[3])) |
52 | |
53 | #define PUT_32BIT(cp, value) { \ |
54 | (cp)[0] = (unsigned char)((value) >> 24); \ |
55 | (cp)[1] = (unsigned char)((value) >> 16); \ |
56 | (cp)[2] = (unsigned char)((value) >> 8); \ |
57 | (cp)[3] = (unsigned char)(value); } |
58 | |
59 | enum { PKT_END, PKT_INT, PKT_CHAR, PKT_DATA, PKT_STR }; |
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60 | |
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61 | /* Coroutine mechanics for the sillier bits of the code */ |
62 | #define crBegin1 static int crLine = 0; |
63 | #define crBegin2 switch(crLine) { case 0:; |
64 | #define crBegin crBegin1; crBegin2; |
65 | #define crFinish(z) } crLine = 0; return (z) |
66 | #define crFinishV } crLine = 0; return |
67 | #define crReturn(z) \ |
68 | do {\ |
69 | crLine=__LINE__; return (z); case __LINE__:;\ |
70 | } while (0) |
71 | #define crReturnV \ |
72 | do {\ |
73 | crLine=__LINE__; return; case __LINE__:;\ |
74 | } while (0) |
75 | #define crStop(z) do{ crLine = 0; return (z); }while(0) |
76 | #define crStopV do{ crLine = 0; return; }while(0) |
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77 | #define crWaitUntil(c) do { crReturn(0); } while (!(c)) |
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78 | |
79 | static SOCKET s = INVALID_SOCKET; |
80 | |
81 | static unsigned char session_key[32]; |
82 | static struct ssh_cipher *cipher = NULL; |
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83 | int scp_flags = 0; |
84 | void (*ssh_get_password)(const char *prompt, char *str, int maxlen) = NULL; |
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85 | |
86 | static char *savedhost; |
87 | |
88 | static enum { |
89 | SSH_STATE_BEFORE_SIZE, |
90 | SSH_STATE_INTERMED, |
21248260 |
91 | SSH_STATE_SESSION, |
92 | SSH_STATE_CLOSED |
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93 | } ssh_state = SSH_STATE_BEFORE_SIZE; |
94 | |
95 | static int size_needed = FALSE; |
96 | |
97 | static void s_write (char *buf, int len) { |
98 | while (len > 0) { |
99 | int i = send (s, buf, len, 0); |
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100 | if (IS_SCP) { |
101 | noise_ultralight(i); |
102 | if (i <= 0) |
103 | fatalbox("Lost connection while sending"); |
104 | } |
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105 | if (i > 0) |
106 | len -= i, buf += i; |
107 | } |
108 | } |
109 | |
110 | static int s_read (char *buf, int len) { |
111 | int ret = 0; |
112 | while (len > 0) { |
113 | int i = recv (s, buf, len, 0); |
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114 | if (IS_SCP) |
115 | noise_ultralight(i); |
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116 | if (i > 0) |
117 | len -= i, buf += i, ret += i; |
118 | else |
119 | return i; |
120 | } |
121 | return ret; |
122 | } |
123 | |
124 | static void c_write (char *buf, int len) { |
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125 | if (IS_SCP) { |
126 | if (len > 0 && buf[len-1] == '\n') len--; |
127 | if (len > 0 && buf[len-1] == '\r') len--; |
128 | if (len > 0) { fwrite(buf, len, 1, stderr); fputc('\n', stderr); } |
129 | return; |
130 | } |
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131 | while (len--) { |
132 | int new_head = (inbuf_head + 1) & INBUF_MASK; |
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133 | if (new_head != inbuf_reap) { |
134 | inbuf[inbuf_head] = *buf++; |
135 | inbuf_head = new_head; |
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136 | } else { |
137 | term_out(); |
138 | if( inbuf_head == inbuf_reap ) len++; else break; |
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139 | } |
140 | } |
141 | } |
142 | |
143 | struct Packet { |
144 | long length; |
145 | int type; |
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146 | unsigned char *data; |
147 | unsigned char *body; |
148 | long maxlen; |
149 | }; |
150 | |
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151 | static struct Packet pktin = { 0, 0, NULL, NULL, 0 }; |
152 | static struct Packet pktout = { 0, 0, NULL, NULL, 0 }; |
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153 | |
154 | static void ssh_protocol(unsigned char *in, int inlen, int ispkt); |
155 | static void ssh_size(void); |
156 | |
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157 | |
158 | /* |
159 | * Collect incoming data in the incoming packet buffer. |
160 | * Decihper and verify the packet when it is completely read. |
161 | * Drop SSH_MSG_DEBUG and SSH_MSG_IGNORE packets. |
162 | * Update the *data and *datalen variables. |
163 | * Return the additional nr of bytes needed, or 0 when |
164 | * a complete packet is available. |
165 | */ |
166 | static int s_rdpkt(unsigned char **data, int *datalen) |
167 | { |
168 | static long len, pad, biglen, to_read; |
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169 | static unsigned long realcrc, gotcrc; |
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170 | static unsigned char *p; |
171 | static int i; |
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172 | |
173 | crBegin; |
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174 | |
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175 | next_packet: |
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176 | |
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177 | pktin.type = 0; |
178 | pktin.length = 0; |
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179 | |
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180 | for (i = len = 0; i < 4; i++) { |
181 | while ((*datalen) == 0) |
182 | crReturn(4-i); |
183 | len = (len << 8) + **data; |
184 | (*data)++, (*datalen)--; |
185 | } |
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186 | |
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187 | #ifdef FWHACK |
188 | if (len == 0x52656d6f) { /* "Remo"te server has closed ... */ |
189 | len = 0x300; /* big enough to carry to end */ |
190 | } |
191 | #endif |
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192 | |
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193 | pad = 8 - (len % 8); |
194 | biglen = len + pad; |
195 | pktin.length = len - 5; |
196 | |
197 | if (pktin.maxlen < biglen) { |
198 | pktin.maxlen = biglen; |
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199 | #ifdef MSCRYPTOAPI |
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200 | /* Allocate enough buffer space for extra block |
201 | * for MS CryptEncrypt() */ |
202 | pktin.data = (pktin.data == NULL ? malloc(biglen+8) : |
203 | realloc(pktin.data, biglen+8)); |
8f203108 |
204 | #else |
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205 | pktin.data = (pktin.data == NULL ? malloc(biglen) : |
206 | realloc(pktin.data, biglen)); |
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207 | #endif |
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208 | if (!pktin.data) |
209 | fatalbox("Out of memory"); |
210 | } |
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211 | |
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212 | to_read = biglen; |
213 | p = pktin.data; |
214 | while (to_read > 0) { |
215 | static int chunk; |
216 | chunk = to_read; |
217 | while ((*datalen) == 0) |
218 | crReturn(to_read); |
219 | if (chunk > (*datalen)) |
220 | chunk = (*datalen); |
221 | memcpy(p, *data, chunk); |
222 | *data += chunk; |
223 | *datalen -= chunk; |
224 | p += chunk; |
225 | to_read -= chunk; |
226 | } |
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227 | |
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228 | if (cipher) |
229 | cipher->decrypt(pktin.data, biglen); |
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230 | |
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231 | pktin.type = pktin.data[pad]; |
232 | pktin.body = pktin.data + pad + 1; |
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233 | |
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234 | realcrc = crc32(pktin.data, biglen-4); |
235 | gotcrc = GET_32BIT(pktin.data+biglen-4); |
236 | if (gotcrc != realcrc) { |
237 | fatalbox("Incorrect CRC received on packet"); |
238 | } |
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239 | |
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240 | if (pktin.type == SSH_SMSG_STDOUT_DATA || |
241 | pktin.type == SSH_SMSG_STDERR_DATA || |
242 | pktin.type == SSH_MSG_DEBUG || |
243 | pktin.type == SSH_SMSG_AUTH_TIS_CHALLENGE) { |
244 | long strlen = GET_32BIT(pktin.body); |
245 | if (strlen + 4 != pktin.length) |
246 | fatalbox("Received data packet with bogus string length"); |
247 | } |
248 | |
249 | if (pktin.type == SSH_MSG_DEBUG) { |
250 | /* log debug message */ |
251 | char buf[80]; |
252 | int strlen = GET_32BIT(pktin.body); |
253 | strcpy(buf, "Remote: "); |
254 | if (strlen > 70) strlen = 70; |
255 | memcpy(buf+8, pktin.body+4, strlen); |
256 | buf[8+strlen] = '\0'; |
257 | logevent(buf); |
258 | goto next_packet; |
259 | } else if (pktin.type == SSH_MSG_IGNORE) { |
260 | /* do nothing */ |
261 | goto next_packet; |
262 | } |
263 | |
264 | crFinish(0); |
265 | } |
266 | |
267 | static void ssh_gotdata(unsigned char *data, int datalen) |
268 | { |
269 | while (datalen > 0) { |
270 | if ( s_rdpkt(&data, &datalen) == 0 ) |
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271 | ssh_protocol(NULL, 0, 1); |
272 | } |
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273 | } |
274 | |
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275 | |
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276 | static void s_wrpkt_start(int type, int len) { |
277 | int pad, biglen; |
278 | |
279 | len += 5; /* type and CRC */ |
280 | pad = 8 - (len%8); |
281 | biglen = len + pad; |
282 | |
283 | pktout.length = len-5; |
284 | if (pktout.maxlen < biglen) { |
285 | pktout.maxlen = biglen; |
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286 | #ifdef MSCRYPTOAPI |
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287 | /* Allocate enough buffer space for extra block |
8f203108 |
288 | * for MS CryptEncrypt() */ |
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289 | pktout.data = (pktout.data == NULL ? malloc(biglen+12) : |
290 | realloc(pktout.data, biglen+12)); |
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291 | #else |
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292 | pktout.data = (pktout.data == NULL ? malloc(biglen+4) : |
293 | realloc(pktout.data, biglen+4)); |
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294 | #endif |
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295 | if (!pktout.data) |
296 | fatalbox("Out of memory"); |
297 | } |
298 | |
299 | pktout.type = type; |
300 | pktout.body = pktout.data+4+pad+1; |
301 | } |
302 | |
303 | static void s_wrpkt(void) { |
304 | int pad, len, biglen, i; |
305 | unsigned long crc; |
306 | |
307 | len = pktout.length + 5; /* type and CRC */ |
308 | pad = 8 - (len%8); |
309 | biglen = len + pad; |
310 | |
311 | pktout.body[-1] = pktout.type; |
312 | for (i=0; i<pad; i++) |
313 | pktout.data[i+4] = random_byte(); |
314 | crc = crc32(pktout.data+4, biglen-4); |
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315 | PUT_32BIT(pktout.data+biglen, crc); |
316 | PUT_32BIT(pktout.data, len); |
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317 | |
318 | if (cipher) |
319 | cipher->encrypt(pktout.data+4, biglen); |
320 | |
321 | s_write(pktout.data, biglen+4); |
322 | } |
323 | |
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324 | /* |
325 | * Construct a packet with the specified contents and |
326 | * send it to the server. |
327 | */ |
328 | static void send_packet(int pkttype, ...) |
329 | { |
330 | va_list args; |
331 | unsigned char *p, *argp, argchar; |
332 | unsigned long argint; |
333 | int pktlen, argtype, arglen; |
334 | |
335 | pktlen = 0; |
336 | va_start(args, pkttype); |
337 | while ((argtype = va_arg(args, int)) != PKT_END) { |
338 | switch (argtype) { |
339 | case PKT_INT: |
340 | (void) va_arg(args, int); |
341 | pktlen += 4; |
342 | break; |
343 | case PKT_CHAR: |
344 | (void) va_arg(args, char); |
345 | pktlen++; |
346 | break; |
347 | case PKT_DATA: |
348 | (void) va_arg(args, unsigned char *); |
349 | arglen = va_arg(args, int); |
350 | pktlen += arglen; |
351 | break; |
352 | case PKT_STR: |
353 | argp = va_arg(args, unsigned char *); |
354 | arglen = strlen(argp); |
355 | pktlen += 4 + arglen; |
356 | break; |
357 | default: |
358 | assert(0); |
359 | } |
360 | } |
361 | va_end(args); |
362 | |
363 | s_wrpkt_start(pkttype, pktlen); |
364 | p = pktout.body; |
365 | |
366 | va_start(args, pkttype); |
367 | while ((argtype = va_arg(args, int)) != PKT_END) { |
368 | switch (argtype) { |
369 | case PKT_INT: |
370 | argint = va_arg(args, int); |
371 | PUT_32BIT(p, argint); |
372 | p += 4; |
373 | break; |
374 | case PKT_CHAR: |
375 | argchar = va_arg(args, unsigned char); |
376 | *p = argchar; |
377 | p++; |
378 | break; |
379 | case PKT_DATA: |
380 | argp = va_arg(args, unsigned char *); |
381 | arglen = va_arg(args, int); |
382 | memcpy(p, argp, arglen); |
383 | p += arglen; |
384 | break; |
385 | case PKT_STR: |
386 | argp = va_arg(args, unsigned char *); |
387 | arglen = strlen(argp); |
388 | PUT_32BIT(p, arglen); |
389 | memcpy(p + 4, argp, arglen); |
390 | p += 4 + arglen; |
391 | break; |
392 | } |
393 | } |
394 | va_end(args); |
395 | |
396 | s_wrpkt(); |
397 | } |
398 | |
399 | |
400 | /* |
401 | * Connect to specified host and port. |
402 | * Returns an error message, or NULL on success. |
403 | * Also places the canonical host name into `realhost'. |
404 | */ |
405 | static char *connect_to_host(char *host, int port, char **realhost) |
406 | { |
407 | SOCKADDR_IN addr; |
408 | struct hostent *h; |
409 | unsigned long a; |
410 | #ifdef FWHACK |
411 | char *FWhost; |
412 | int FWport; |
413 | #endif |
414 | |
415 | savedhost = malloc(1+strlen(host)); |
416 | if (!savedhost) |
417 | fatalbox("Out of memory"); |
418 | strcpy(savedhost, host); |
419 | |
420 | if (port < 0) |
421 | port = 22; /* default ssh port */ |
422 | |
423 | #ifdef FWHACK |
424 | FWhost = host; |
425 | FWport = port; |
426 | host = FWSTR; |
427 | port = 23; |
428 | #endif |
429 | |
430 | /* |
431 | * Try to find host. |
432 | */ |
433 | if ( (a = inet_addr(host)) == (unsigned long) INADDR_NONE) { |
434 | if ( (h = gethostbyname(host)) == NULL) |
435 | switch (WSAGetLastError()) { |
436 | case WSAENETDOWN: return "Network is down"; |
437 | case WSAHOST_NOT_FOUND: case WSANO_DATA: |
438 | return "Host does not exist"; |
439 | case WSATRY_AGAIN: return "Host not found"; |
440 | default: return "gethostbyname: unknown error"; |
441 | } |
442 | memcpy (&a, h->h_addr, sizeof(a)); |
443 | *realhost = h->h_name; |
444 | } else |
445 | *realhost = host; |
446 | #ifdef FWHACK |
447 | *realhost = FWhost; |
448 | #endif |
449 | a = ntohl(a); |
450 | |
451 | /* |
452 | * Open socket. |
453 | */ |
454 | s = socket(AF_INET, SOCK_STREAM, 0); |
455 | if (s == INVALID_SOCKET) |
456 | switch (WSAGetLastError()) { |
457 | case WSAENETDOWN: return "Network is down"; |
458 | case WSAEAFNOSUPPORT: return "TCP/IP support not present"; |
459 | default: return "socket(): unknown error"; |
460 | } |
461 | |
462 | /* |
463 | * Bind to local address. |
464 | */ |
465 | addr.sin_family = AF_INET; |
466 | addr.sin_addr.s_addr = htonl(INADDR_ANY); |
467 | addr.sin_port = htons(0); |
468 | if (bind (s, (struct sockaddr *)&addr, sizeof(addr)) == SOCKET_ERROR) |
469 | switch (WSAGetLastError()) { |
470 | case WSAENETDOWN: return "Network is down"; |
471 | default: return "bind(): unknown error"; |
472 | } |
473 | |
474 | /* |
475 | * Connect to remote address. |
476 | */ |
477 | addr.sin_addr.s_addr = htonl(a); |
478 | addr.sin_port = htons((short)port); |
479 | if (connect (s, (struct sockaddr *)&addr, sizeof(addr)) == SOCKET_ERROR) |
480 | switch (WSAGetLastError()) { |
481 | case WSAENETDOWN: return "Network is down"; |
482 | case WSAECONNREFUSED: return "Connection refused"; |
483 | case WSAENETUNREACH: return "Network is unreachable"; |
484 | case WSAEHOSTUNREACH: return "No route to host"; |
485 | default: return "connect(): unknown error"; |
486 | } |
487 | |
488 | #ifdef FWHACK |
489 | send(s, "connect ", 8, 0); |
490 | send(s, FWhost, strlen(FWhost), 0); |
491 | { |
492 | char buf[20]; |
493 | sprintf(buf, " %d\n", FWport); |
494 | send (s, buf, strlen(buf), 0); |
495 | } |
496 | #endif |
497 | |
498 | return NULL; |
499 | } |
500 | |
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501 | static int ssh_versioncmp(char *a, char *b) { |
502 | char *ae, *be; |
503 | unsigned long av, bv; |
504 | |
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505 | av = strtoul(a, &ae, 10); |
506 | bv = strtoul(b, &be, 10); |
9697bfd2 |
507 | if (av != bv) return (av < bv ? -1 : +1); |
508 | if (*ae == '.') ae++; |
509 | if (*be == '.') be++; |
43aa02a7 |
510 | av = strtoul(ae, &ae, 10); |
511 | bv = strtoul(be, &be, 10); |
9697bfd2 |
512 | if (av != bv) return (av < bv ? -1 : +1); |
513 | return 0; |
514 | } |
515 | |
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516 | static int do_ssh_init(void) { |
c5e9c988 |
517 | char c, *vsp; |
374330e2 |
518 | char version[10]; |
c5e9c988 |
519 | char vstring[80]; |
520 | char vlog[sizeof(vstring)+20]; |
374330e2 |
521 | int i; |
522 | |
523 | #ifdef FWHACK |
524 | i = 0; |
525 | while (s_read(&c, 1) == 1) { |
526 | if (c == 'S' && i < 2) i++; |
527 | else if (c == 'S' && i == 2) i = 2; |
528 | else if (c == 'H' && i == 2) break; |
529 | else i = 0; |
530 | } |
531 | #else |
532 | if (s_read(&c,1) != 1 || c != 'S') return 0; |
533 | if (s_read(&c,1) != 1 || c != 'S') return 0; |
534 | if (s_read(&c,1) != 1 || c != 'H') return 0; |
535 | #endif |
c5e9c988 |
536 | strcpy(vstring, "SSH-"); |
537 | vsp = vstring+4; |
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538 | if (s_read(&c,1) != 1 || c != '-') return 0; |
539 | i = 0; |
540 | while (1) { |
541 | if (s_read(&c,1) != 1) |
542 | return 0; |
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543 | if (vsp < vstring+sizeof(vstring)-1) |
544 | *vsp++ = c; |
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545 | if (i >= 0) { |
546 | if (c == '-') { |
547 | version[i] = '\0'; |
548 | i = -1; |
549 | } else if (i < sizeof(version)-1) |
550 | version[i++] = c; |
551 | } |
552 | else if (c == '\n') |
553 | break; |
554 | } |
555 | |
c5e9c988 |
556 | *vsp = 0; |
557 | sprintf(vlog, "Server version: %s", vstring); |
558 | vlog[strcspn(vlog, "\r\n")] = '\0'; |
559 | logevent(vlog); |
560 | |
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561 | sprintf(vstring, "SSH-%s-PuTTY\n", |
562 | (ssh_versioncmp(version, "1.5") <= 0 ? version : "1.5")); |
c5e9c988 |
563 | sprintf(vlog, "We claim version: %s", vstring); |
564 | vlog[strcspn(vlog, "\r\n")] = '\0'; |
565 | logevent(vlog); |
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566 | s_write(vstring, strlen(vstring)); |
fef97f43 |
567 | return 1; |
374330e2 |
568 | } |
569 | |
fb09bf1c |
570 | /* |
571 | * Handle the key exchange and user authentication phases. |
572 | */ |
573 | static int do_ssh_login(unsigned char *in, int inlen, int ispkt) |
574 | { |
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575 | int i, j, len; |
576 | unsigned char session_id[16]; |
577 | unsigned char *rsabuf, *keystr1, *keystr2; |
578 | unsigned char cookie[8]; |
579 | struct RSAKey servkey, hostkey; |
580 | struct MD5Context md5c; |
ccbfb941 |
581 | static unsigned long supported_ciphers_mask, supported_auths_mask; |
bea1ef5f |
582 | int cipher_type; |
374330e2 |
583 | |
584 | extern struct ssh_cipher ssh_3des; |
9697bfd2 |
585 | extern struct ssh_cipher ssh_des; |
bea1ef5f |
586 | extern struct ssh_cipher ssh_blowfish; |
374330e2 |
587 | |
588 | crBegin; |
589 | |
fb09bf1c |
590 | if (!ispkt) crWaitUntil(ispkt); |
374330e2 |
591 | |
972a41c8 |
592 | if (pktin.type != SSH_SMSG_PUBLIC_KEY) |
374330e2 |
593 | fatalbox("Public key packet not received"); |
594 | |
c5e9c988 |
595 | logevent("Received public keys"); |
374330e2 |
596 | |
c5e9c988 |
597 | memcpy(cookie, pktin.body, 8); |
374330e2 |
598 | |
599 | i = makekey(pktin.body+8, &servkey, &keystr1); |
374330e2 |
600 | j = makekey(pktin.body+8+i, &hostkey, &keystr2); |
601 | |
c5e9c988 |
602 | /* |
603 | * Hash the host key and print the hash in the log box. Just as |
604 | * a last resort in case the registry's host key checking is |
605 | * compromised, we'll allow the user some ability to verify |
606 | * host keys by eye. |
607 | */ |
608 | MD5Init(&md5c); |
609 | MD5Update(&md5c, keystr2, hostkey.bytes); |
610 | MD5Final(session_id, &md5c); |
611 | { |
612 | char logmsg[80]; |
613 | int i; |
614 | logevent("Host key MD5 is:"); |
615 | strcpy(logmsg, " "); |
616 | for (i = 0; i < 16; i++) |
617 | sprintf(logmsg+strlen(logmsg), "%02x", session_id[i]); |
618 | logevent(logmsg); |
619 | } |
620 | |
fb09bf1c |
621 | supported_ciphers_mask = GET_32BIT(pktin.body+12+i+j); |
622 | supported_auths_mask = GET_32BIT(pktin.body+16+i+j); |
bea1ef5f |
623 | |
c5e9c988 |
624 | MD5Init(&md5c); |
374330e2 |
625 | MD5Update(&md5c, keystr2, hostkey.bytes); |
626 | MD5Update(&md5c, keystr1, servkey.bytes); |
627 | MD5Update(&md5c, pktin.body, 8); |
374330e2 |
628 | MD5Final(session_id, &md5c); |
629 | |
630 | for (i=0; i<32; i++) |
631 | session_key[i] = random_byte(); |
632 | |
633 | len = (hostkey.bytes > servkey.bytes ? hostkey.bytes : servkey.bytes); |
634 | |
635 | rsabuf = malloc(len); |
636 | if (!rsabuf) |
637 | fatalbox("Out of memory"); |
638 | |
89ee5268 |
639 | /* |
640 | * Verify the host key. |
641 | */ |
642 | { |
643 | /* |
644 | * First format the key into a string. |
645 | */ |
646 | int len = rsastr_len(&hostkey); |
647 | char *keystr = malloc(len); |
648 | if (!keystr) |
649 | fatalbox("Out of memory"); |
650 | rsastr_fmt(keystr, &hostkey); |
651 | verify_ssh_host_key(savedhost, keystr); |
652 | free(keystr); |
653 | } |
374330e2 |
654 | |
655 | for (i=0; i<32; i++) { |
656 | rsabuf[i] = session_key[i]; |
657 | if (i < 16) |
658 | rsabuf[i] ^= session_id[i]; |
659 | } |
660 | |
661 | if (hostkey.bytes > servkey.bytes) { |
662 | rsaencrypt(rsabuf, 32, &servkey); |
663 | rsaencrypt(rsabuf, servkey.bytes, &hostkey); |
664 | } else { |
665 | rsaencrypt(rsabuf, 32, &hostkey); |
666 | rsaencrypt(rsabuf, hostkey.bytes, &servkey); |
667 | } |
668 | |
c5e9c988 |
669 | logevent("Encrypted session key"); |
670 | |
bea1ef5f |
671 | cipher_type = cfg.cipher == CIPHER_BLOWFISH ? SSH_CIPHER_BLOWFISH : |
9697bfd2 |
672 | cfg.cipher == CIPHER_DES ? SSH_CIPHER_DES : |
bea1ef5f |
673 | SSH_CIPHER_3DES; |
674 | if ((supported_ciphers_mask & (1 << cipher_type)) == 0) { |
675 | c_write("Selected cipher not supported, falling back to 3DES\r\n", 53); |
676 | cipher_type = SSH_CIPHER_3DES; |
677 | } |
c5e9c988 |
678 | switch (cipher_type) { |
679 | case SSH_CIPHER_3DES: logevent("Using 3DES encryption"); break; |
680 | case SSH_CIPHER_DES: logevent("Using single-DES encryption"); break; |
681 | case SSH_CIPHER_BLOWFISH: logevent("Using Blowfish encryption"); break; |
682 | } |
bea1ef5f |
683 | |
fb09bf1c |
684 | send_packet(SSH_CMSG_SESSION_KEY, |
685 | PKT_CHAR, cipher_type, |
686 | PKT_DATA, cookie, 8, |
687 | PKT_CHAR, (len*8) >> 8, PKT_CHAR, (len*8) & 0xFF, |
688 | PKT_DATA, rsabuf, len, |
689 | PKT_INT, 0, |
690 | PKT_END); |
691 | |
c5e9c988 |
692 | logevent("Trying to enable encryption..."); |
374330e2 |
693 | |
694 | free(rsabuf); |
695 | |
bea1ef5f |
696 | cipher = cipher_type == SSH_CIPHER_BLOWFISH ? &ssh_blowfish : |
9697bfd2 |
697 | cipher_type == SSH_CIPHER_DES ? &ssh_des : |
bea1ef5f |
698 | &ssh_3des; |
374330e2 |
699 | cipher->sesskey(session_key); |
700 | |
fb09bf1c |
701 | crWaitUntil(ispkt); |
374330e2 |
702 | |
972a41c8 |
703 | if (pktin.type != SSH_SMSG_SUCCESS) |
374330e2 |
704 | fatalbox("Encryption not successfully enabled"); |
705 | |
c5e9c988 |
706 | logevent("Successfully started encryption"); |
707 | |
374330e2 |
708 | fflush(stdout); |
709 | { |
710 | static char username[100]; |
711 | static int pos = 0; |
712 | static char c; |
fb09bf1c |
713 | if (!IS_SCP && !*cfg.username) { |
374330e2 |
714 | c_write("login as: ", 10); |
715 | while (pos >= 0) { |
fb09bf1c |
716 | crWaitUntil(!ispkt); |
374330e2 |
717 | while (inlen--) switch (c = *in++) { |
718 | case 10: case 13: |
719 | username[pos] = 0; |
720 | pos = -1; |
721 | break; |
722 | case 8: case 127: |
723 | if (pos > 0) { |
724 | c_write("\b \b", 3); |
725 | pos--; |
726 | } |
727 | break; |
728 | case 21: case 27: |
729 | while (pos > 0) { |
730 | c_write("\b \b", 3); |
731 | pos--; |
732 | } |
733 | break; |
734 | case 3: case 4: |
735 | random_save_seed(); |
736 | exit(0); |
737 | break; |
738 | default: |
40d24aa6 |
739 | if (((c >= ' ' && c <= '~') || |
740 | ((unsigned char)c >= 160)) && pos < 40) { |
374330e2 |
741 | username[pos++] = c; |
742 | c_write(&c, 1); |
743 | } |
744 | break; |
745 | } |
746 | } |
747 | c_write("\r\n", 2); |
748 | username[strcspn(username, "\n\r")] = '\0'; |
749 | } else { |
750 | char stuff[200]; |
751 | strncpy(username, cfg.username, 99); |
752 | username[99] = '\0'; |
fb09bf1c |
753 | if (!IS_SCP) { |
754 | sprintf(stuff, "Sent username \"%s\".\r\n", username); |
755 | c_write(stuff, strlen(stuff)); |
756 | } |
374330e2 |
757 | } |
fb09bf1c |
758 | |
759 | send_packet(SSH_CMSG_USER, PKT_STR, username, PKT_END); |
c5e9c988 |
760 | { |
761 | char userlog[20+sizeof(username)]; |
762 | sprintf(userlog, "Sent username \"%s\"", username); |
763 | logevent(userlog); |
764 | } |
374330e2 |
765 | } |
766 | |
fb09bf1c |
767 | crWaitUntil(ispkt); |
374330e2 |
768 | |
972a41c8 |
769 | while (pktin.type == SSH_SMSG_FAILURE) { |
374330e2 |
770 | static char password[100]; |
771 | static int pos; |
772 | static char c; |
ccbfb941 |
773 | static int pwpkt_type; |
774 | |
775 | /* |
776 | * Show password prompt, having first obtained it via a TIS |
777 | * exchange if we're doing TIS authentication. |
778 | */ |
779 | pwpkt_type = SSH_CMSG_AUTH_PASSWORD; |
fb09bf1c |
780 | |
781 | if (IS_SCP) { |
782 | char prompt[200]; |
783 | sprintf(prompt, "%s@%s's password: ", cfg.username, savedhost); |
784 | ssh_get_password(prompt, password, sizeof(password)); |
785 | } else { |
786 | |
ccbfb941 |
787 | if (pktin.type == SSH_SMSG_FAILURE && |
788 | cfg.try_tis_auth && |
789 | (supported_auths_mask & (1<<SSH_AUTH_TIS))) { |
790 | pwpkt_type = SSH_CMSG_AUTH_TIS_RESPONSE; |
c5e9c988 |
791 | logevent("Requested TIS authentication"); |
fb09bf1c |
792 | send_packet(SSH_CMSG_AUTH_TIS, PKT_END); |
793 | crWaitUntil(ispkt); |
ccbfb941 |
794 | if (pktin.type != SSH_SMSG_AUTH_TIS_CHALLENGE) { |
c5e9c988 |
795 | logevent("TIS authentication declined"); |
ccbfb941 |
796 | c_write("TIS authentication refused.\r\n", 29); |
797 | } else { |
798 | int challengelen = ((pktin.body[0] << 24) | |
799 | (pktin.body[1] << 16) | |
800 | (pktin.body[2] << 8) | |
801 | (pktin.body[3])); |
c5e9c988 |
802 | logevent("Received TIS challenge"); |
ccbfb941 |
803 | c_write(pktin.body+4, challengelen); |
804 | } |
805 | } |
806 | if (pwpkt_type == SSH_CMSG_AUTH_PASSWORD) |
807 | c_write("password: ", 10); |
808 | |
374330e2 |
809 | pos = 0; |
810 | while (pos >= 0) { |
fb09bf1c |
811 | crWaitUntil(!ispkt); |
374330e2 |
812 | while (inlen--) switch (c = *in++) { |
813 | case 10: case 13: |
814 | password[pos] = 0; |
815 | pos = -1; |
816 | break; |
817 | case 8: case 127: |
818 | if (pos > 0) |
819 | pos--; |
820 | break; |
821 | case 21: case 27: |
822 | pos = 0; |
823 | break; |
824 | case 3: case 4: |
825 | random_save_seed(); |
826 | exit(0); |
827 | break; |
828 | default: |
40d24aa6 |
829 | if (((c >= ' ' && c <= '~') || |
830 | ((unsigned char)c >= 160)) && pos < 40) |
374330e2 |
831 | password[pos++] = c; |
832 | break; |
833 | } |
834 | } |
835 | c_write("\r\n", 2); |
fb09bf1c |
836 | |
837 | } |
838 | |
839 | send_packet(pwpkt_type, PKT_STR, password, PKT_END); |
c5e9c988 |
840 | logevent("Sent password"); |
374330e2 |
841 | memset(password, 0, strlen(password)); |
fb09bf1c |
842 | crWaitUntil(ispkt); |
843 | if (pktin.type == SSH_SMSG_FAILURE) { |
374330e2 |
844 | c_write("Access denied\r\n", 15); |
c5e9c988 |
845 | logevent("Authentication refused"); |
fb09bf1c |
846 | } else if (pktin.type == SSH_MSG_DISCONNECT) { |
847 | logevent("Received disconnect request"); |
848 | crReturn(0); |
849 | } else if (pktin.type != SSH_SMSG_SUCCESS) { |
374330e2 |
850 | fatalbox("Strange packet received, type %d", pktin.type); |
851 | } |
852 | } |
853 | |
c5e9c988 |
854 | logevent("Authentication successful"); |
855 | |
fb09bf1c |
856 | crFinish(1); |
857 | } |
858 | |
859 | static void ssh_protocol(unsigned char *in, int inlen, int ispkt) { |
860 | crBegin; |
861 | |
862 | random_init(); |
863 | |
864 | while (!do_ssh_login(in, inlen, ispkt)) |
865 | crReturnV; |
866 | |
fef97f43 |
867 | if (!cfg.nopty) { |
fb09bf1c |
868 | send_packet(SSH_CMSG_REQUEST_PTY, |
869 | PKT_STR, cfg.termtype, |
870 | PKT_INT, rows, PKT_INT, cols, |
871 | PKT_INT, 0, PKT_INT, 0, |
872 | PKT_CHAR, 0, |
873 | PKT_END); |
fef97f43 |
874 | ssh_state = SSH_STATE_INTERMED; |
875 | do { crReturnV; } while (!ispkt); |
ccbfb941 |
876 | if (pktin.type != SSH_SMSG_SUCCESS && pktin.type != SSH_SMSG_FAILURE) { |
fef97f43 |
877 | fatalbox("Protocol confusion"); |
ccbfb941 |
878 | } else if (pktin.type == SSH_SMSG_FAILURE) { |
fef97f43 |
879 | c_write("Server refused to allocate pty\r\n", 32); |
880 | } |
c5e9c988 |
881 | logevent("Allocated pty"); |
374330e2 |
882 | } |
883 | |
fb09bf1c |
884 | send_packet(SSH_CMSG_EXEC_SHELL, PKT_END); |
c5e9c988 |
885 | logevent("Started session"); |
374330e2 |
886 | |
887 | ssh_state = SSH_STATE_SESSION; |
888 | if (size_needed) |
889 | ssh_size(); |
890 | |
891 | while (1) { |
892 | crReturnV; |
893 | if (ispkt) { |
972a41c8 |
894 | if (pktin.type == SSH_SMSG_STDOUT_DATA || |
895 | pktin.type == SSH_SMSG_STDERR_DATA) { |
fb09bf1c |
896 | long len = GET_32BIT(pktin.body); |
897 | c_write(pktin.body+4, len); |
972a41c8 |
898 | } else if (pktin.type == SSH_MSG_DISCONNECT) { |
21248260 |
899 | ssh_state = SSH_STATE_CLOSED; |
c5e9c988 |
900 | logevent("Received disconnect request"); |
ccbfb941 |
901 | } else if (pktin.type == SSH_SMSG_SUCCESS) { |
972a41c8 |
902 | /* may be from EXEC_SHELL on some servers */ |
ccbfb941 |
903 | } else if (pktin.type == SSH_SMSG_FAILURE) { |
972a41c8 |
904 | /* may be from EXEC_SHELL on some servers |
374330e2 |
905 | * if no pty is available or in other odd cases. Ignore */ |
fb09bf1c |
906 | } else if (pktin.type == SSH_SMSG_EXIT_STATUS) { |
907 | send_packet(SSH_CMSG_EXIT_CONFIRMATION, PKT_END); |
374330e2 |
908 | } else { |
909 | fatalbox("Strange packet received: type %d", pktin.type); |
910 | } |
911 | } else { |
fb09bf1c |
912 | send_packet(SSH_CMSG_STDIN_DATA, |
913 | PKT_INT, inlen, PKT_DATA, in, inlen, PKT_END); |
374330e2 |
914 | } |
915 | } |
916 | |
917 | crFinishV; |
918 | } |
919 | |
920 | /* |
921 | * Called to set up the connection. Will arrange for WM_NETEVENT |
922 | * messages to be passed to the specified window, whose window |
923 | * procedure should then call telnet_msg(). |
924 | * |
925 | * Returns an error message, or NULL on success. |
374330e2 |
926 | */ |
927 | static char *ssh_init (HWND hwnd, char *host, int port, char **realhost) { |
fb09bf1c |
928 | char *p; |
8f203108 |
929 | |
930 | #ifdef MSCRYPTOAPI |
931 | if(crypto_startup() == 0) |
932 | return "Microsoft high encryption pack not installed!"; |
933 | #endif |
374330e2 |
934 | |
fb09bf1c |
935 | p = connect_to_host(host, port, realhost); |
936 | if (p != NULL) |
937 | return p; |
374330e2 |
938 | |
939 | if (!do_ssh_init()) |
940 | return "Protocol initialisation error"; |
941 | |
942 | if (WSAAsyncSelect (s, hwnd, WM_NETEVENT, FD_READ | FD_CLOSE) == SOCKET_ERROR) |
943 | switch (WSAGetLastError()) { |
944 | case WSAENETDOWN: return "Network is down"; |
945 | default: return "WSAAsyncSelect(): unknown error"; |
946 | } |
947 | |
948 | return NULL; |
949 | } |
950 | |
951 | /* |
952 | * Process a WM_NETEVENT message. Will return 0 if the connection |
953 | * has closed, or <0 for a socket error. |
954 | */ |
955 | static int ssh_msg (WPARAM wParam, LPARAM lParam) { |
956 | int ret; |
957 | char buf[256]; |
958 | |
8ce72d2c |
959 | /* |
960 | * Because reading less than the whole of the available pending |
961 | * data can generate an FD_READ event, we need to allow for the |
962 | * possibility that FD_READ may arrive with FD_CLOSE already in |
963 | * the queue; so it's possible that we can get here even with s |
964 | * invalid. If so, we return 1 and don't worry about it. |
965 | */ |
966 | if (s == INVALID_SOCKET) |
967 | return 1; |
374330e2 |
968 | |
969 | if (WSAGETSELECTERROR(lParam) != 0) |
970 | return -WSAGETSELECTERROR(lParam); |
971 | |
972 | switch (WSAGETSELECTEVENT(lParam)) { |
973 | case FD_READ: |
8ce72d2c |
974 | case FD_CLOSE: |
374330e2 |
975 | ret = recv(s, buf, sizeof(buf), 0); |
976 | if (ret < 0 && WSAGetLastError() == WSAEWOULDBLOCK) |
977 | return 1; |
978 | if (ret < 0) /* any _other_ error */ |
979 | return -10000-WSAGetLastError(); |
980 | if (ret == 0) { |
981 | s = INVALID_SOCKET; |
8ce72d2c |
982 | return 0; |
374330e2 |
983 | } |
984 | ssh_gotdata (buf, ret); |
985 | return 1; |
374330e2 |
986 | } |
987 | return 1; /* shouldn't happen, but WTF */ |
988 | } |
989 | |
990 | /* |
991 | * Called to send data down the Telnet connection. |
992 | */ |
993 | static void ssh_send (char *buf, int len) { |
994 | if (s == INVALID_SOCKET) |
995 | return; |
996 | |
997 | ssh_protocol(buf, len, 0); |
998 | } |
999 | |
1000 | /* |
1001 | * Called to set the size of the window from Telnet's POV. |
1002 | */ |
1003 | static void ssh_size(void) { |
1004 | switch (ssh_state) { |
1005 | case SSH_STATE_BEFORE_SIZE: |
21248260 |
1006 | case SSH_STATE_CLOSED: |
374330e2 |
1007 | break; /* do nothing */ |
1008 | case SSH_STATE_INTERMED: |
1009 | size_needed = TRUE; /* buffer for later */ |
1010 | break; |
1011 | case SSH_STATE_SESSION: |
fef97f43 |
1012 | if (!cfg.nopty) { |
fb09bf1c |
1013 | send_packet(SSH_CMSG_WINDOW_SIZE, |
1014 | PKT_INT, rows, PKT_INT, cols, |
1015 | PKT_INT, 0, PKT_INT, 0, PKT_END); |
fef97f43 |
1016 | } |
374330e2 |
1017 | } |
1018 | } |
1019 | |
1020 | /* |
1021 | * (Send Telnet special codes) |
1022 | */ |
1023 | static void ssh_special (Telnet_Special code) { |
1024 | /* do nothing */ |
1025 | } |
1026 | |
fb09bf1c |
1027 | |
1028 | /* |
1029 | * Read and decrypt one incoming SSH packet. |
1030 | * (only used by pSCP) |
1031 | */ |
1032 | static void get_packet(void) |
1033 | { |
1034 | unsigned char buf[4096], *p; |
1035 | long to_read; |
1036 | int len; |
1037 | |
1038 | assert(IS_SCP); |
1039 | |
1040 | p = NULL; |
1041 | len = 0; |
1042 | |
1043 | while ((to_read = s_rdpkt(&p, &len)) > 0) { |
1044 | if (to_read > sizeof(buf)) to_read = sizeof(buf); |
1045 | len = s_read(buf, to_read); |
1046 | if (len != to_read) { |
1047 | closesocket(s); |
1048 | s = INVALID_SOCKET; |
1049 | return; |
1050 | } |
1051 | p = buf; |
1052 | } |
1053 | |
1054 | assert(len == 0); |
1055 | } |
1056 | |
1057 | /* |
1058 | * Receive a block of data over the SSH link. Block until |
1059 | * all data is available. Return nr of bytes read (0 if lost connection). |
1060 | * (only used by pSCP) |
1061 | */ |
1062 | int ssh_scp_recv(unsigned char *buf, int len) |
1063 | { |
1064 | static int pending_input_len = 0; |
1065 | static unsigned char *pending_input_ptr; |
1066 | int to_read = len; |
1067 | |
1068 | assert(IS_SCP); |
1069 | |
1070 | if (pending_input_len >= to_read) { |
1071 | memcpy(buf, pending_input_ptr, to_read); |
1072 | pending_input_ptr += to_read; |
1073 | pending_input_len -= to_read; |
1074 | return len; |
1075 | } |
1076 | |
1077 | if (pending_input_len > 0) { |
1078 | memcpy(buf, pending_input_ptr, pending_input_len); |
1079 | buf += pending_input_len; |
1080 | to_read -= pending_input_len; |
1081 | pending_input_len = 0; |
1082 | } |
1083 | |
1084 | if (s == INVALID_SOCKET) |
1085 | return 0; |
1086 | while (to_read > 0) { |
1087 | get_packet(); |
1088 | if (s == INVALID_SOCKET) |
1089 | return 0; |
1090 | if (pktin.type == SSH_SMSG_STDOUT_DATA) { |
1091 | int plen = GET_32BIT(pktin.body); |
1092 | if (plen <= to_read) { |
1093 | memcpy(buf, pktin.body + 4, plen); |
1094 | buf += plen; |
1095 | to_read -= plen; |
1096 | } else { |
1097 | memcpy(buf, pktin.body + 4, to_read); |
1098 | pending_input_len = plen - to_read; |
1099 | pending_input_ptr = pktin.body + 4 + to_read; |
1100 | to_read = 0; |
1101 | } |
1102 | } else if (pktin.type == SSH_SMSG_STDERR_DATA) { |
1103 | int plen = GET_32BIT(pktin.body); |
1104 | fwrite(pktin.body + 4, plen, 1, stderr); |
1105 | } else if (pktin.type == SSH_MSG_DISCONNECT) { |
1106 | logevent("Received disconnect request"); |
1107 | } else if (pktin.type == SSH_SMSG_SUCCESS || |
1108 | pktin.type == SSH_SMSG_FAILURE) { |
1109 | /* ignore */ |
1110 | } else if (pktin.type == SSH_SMSG_EXIT_STATUS) { |
1111 | char logbuf[100]; |
1112 | sprintf(logbuf, "Remote exit status: %d", GET_32BIT(pktin.body)); |
1113 | logevent(logbuf); |
1114 | send_packet(SSH_CMSG_EXIT_CONFIRMATION, PKT_END); |
1115 | logevent("Closing connection"); |
1116 | closesocket(s); |
1117 | s = INVALID_SOCKET; |
1118 | } else { |
1119 | fatalbox("Strange packet received: type %d", pktin.type); |
1120 | } |
1121 | } |
1122 | |
1123 | return len; |
1124 | } |
1125 | |
1126 | /* |
1127 | * Send a block of data over the SSH link. |
1128 | * Block until all data is sent. |
1129 | * (only used by pSCP) |
1130 | */ |
1131 | void ssh_scp_send(unsigned char *buf, int len) |
1132 | { |
1133 | assert(IS_SCP); |
1134 | if (s == INVALID_SOCKET) |
1135 | return; |
1136 | send_packet(SSH_CMSG_STDIN_DATA, |
1137 | PKT_INT, len, PKT_DATA, buf, len, PKT_END); |
1138 | } |
1139 | |
1140 | /* |
1141 | * Send an EOF notification to the server. |
1142 | * (only used by pSCP) |
1143 | */ |
1144 | void ssh_scp_send_eof(void) |
1145 | { |
1146 | assert(IS_SCP); |
1147 | if (s == INVALID_SOCKET) |
1148 | return; |
1149 | send_packet(SSH_CMSG_EOF, PKT_END); |
1150 | } |
1151 | |
1152 | /* |
1153 | * Set up the connection, login on the remote host and |
1154 | * start execution of a command. |
1155 | * Returns an error message, or NULL on success. |
1156 | * (only used by pSCP) |
1157 | */ |
1158 | char *ssh_scp_init(char *host, int port, char *cmd, char **realhost) |
1159 | { |
1160 | char buf[160], *p; |
1161 | |
1162 | assert(IS_SCP); |
1163 | |
1164 | #ifdef MSCRYPTOAPI |
1165 | if (crypto_startup() == 0) |
1166 | return "Microsoft high encryption pack not installed!"; |
1167 | #endif |
1168 | |
1169 | p = connect_to_host(host, port, realhost); |
1170 | if (p != NULL) |
1171 | return p; |
1172 | |
1173 | random_init(); |
1174 | |
1175 | if (!do_ssh_init()) |
1176 | return "Protocol initialisation error"; |
1177 | |
1178 | /* Exchange keys and login */ |
1179 | do { |
1180 | get_packet(); |
1181 | if (s == INVALID_SOCKET) |
1182 | return "Connection closed by remote host"; |
1183 | } while (!do_ssh_login(NULL, 0, 1)); |
1184 | |
1185 | /* Execute command */ |
1186 | sprintf(buf, "Sending command: %.100s", cmd); |
1187 | logevent(buf); |
1188 | send_packet(SSH_CMSG_EXEC_CMD, PKT_STR, cmd, PKT_END); |
1189 | |
1190 | return NULL; |
1191 | } |
1192 | |
1193 | |
374330e2 |
1194 | Backend ssh_backend = { |
1195 | ssh_init, |
1196 | ssh_msg, |
1197 | ssh_send, |
1198 | ssh_size, |
1199 | ssh_special |
1200 | }; |
fb09bf1c |
1201 | |