1 /*
2 * Support classes for the Pedro mini-XMPP client
3 *
4 * Authors:
5 * Bob Jamison
6 *
7 * Copyright (C) 2005-2007 Bob Jamison
8 *
9 * This library is free software; you can redistribute it and/or
10 * modify it under the terms of the GNU Lesser General Public
11 * License as published by the Free Software Foundation; either
12 * version 2.1 of the License, or (at your option) any later version.
13 *
14 * This library is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 * Lesser General Public License for more details.
18 *
19 * You should have received a copy of the GNU Lesser General Public
20 * License along with this library; if not, write to the Free Software
21 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
22 */
25 #include <stdio.h>
26 #include <stdarg.h>
28 #include <sys/stat.h>
30 #include "pedroutil.h"
34 #ifdef __WIN32__
36 #include <windows.h>
38 #else /* UNIX */
40 #include <sys/types.h>
41 #include <sys/socket.h>
42 #include <netinet/in.h>
43 #include <netdb.h>
44 #include <unistd.h>
45 #include <sys/ioctl.h>
47 #include <pthread.h>
49 #endif /* UNIX */
51 #ifdef HAVE_SSL
52 RELAYTOOL_SSL
53 #endif
56 namespace Pedro
57 {
63 //########################################################################
64 //########################################################################
65 //# B A S E 6 4
66 //########################################################################
67 //########################################################################
70 //#################
71 //# ENCODER
72 //#################
75 static char *base64encode =
76 "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
80 /**
81 * Writes the specified byte to the output buffer
82 */
83 void Base64Encoder::append(int ch)
84 {
85 outBuf <<= 8;
86 outBuf |= (ch & 0xff);
87 bitCount += 8;
88 if (bitCount >= 24)
89 {
90 int indx = (int)((outBuf & 0x00fc0000L) >> 18);
91 int obyte = (int)base64encode[indx & 63];
92 buf.push_back(obyte);
94 indx = (int)((outBuf & 0x0003f000L) >> 12);
95 obyte = (int)base64encode[indx & 63];
96 buf.push_back(obyte);
98 indx = (int)((outBuf & 0x00000fc0L) >> 6);
99 obyte = (int)base64encode[indx & 63];
100 buf.push_back(obyte);
102 indx = (int)((outBuf & 0x0000003fL) );
103 obyte = (int)base64encode[indx & 63];
104 buf.push_back(obyte);
106 bitCount = 0;
107 outBuf = 0L;
108 }
109 }
111 /**
112 * Writes the specified string to the output buffer
113 */
114 void Base64Encoder::append(char *str)
115 {
116 while (*str)
117 append((int)*str++);
118 }
120 /**
121 * Writes the specified string to the output buffer
122 */
123 void Base64Encoder::append(unsigned char *str, int len)
124 {
125 while (len>0)
126 {
127 append((int)*str++);
128 len--;
129 }
130 }
132 /**
133 * Writes the specified string to the output buffer
134 */
135 void Base64Encoder::append(const DOMString &str)
136 {
137 append((char *)str.c_str());
138 }
140 /**
141 * Closes this output stream and releases any system resources
142 * associated with this stream.
143 */
144 DOMString Base64Encoder::finish()
145 {
146 //get any last bytes (1 or 2) out of the buffer
147 if (bitCount == 16)
148 {
149 outBuf <<= 2; //pad to make 18 bits
151 int indx = (int)((outBuf & 0x0003f000L) >> 12);
152 int obyte = (int)base64encode[indx & 63];
153 buf.push_back(obyte);
155 indx = (int)((outBuf & 0x00000fc0L) >> 6);
156 obyte = (int)base64encode[indx & 63];
157 buf.push_back(obyte);
159 indx = (int)((outBuf & 0x0000003fL) );
160 obyte = (int)base64encode[indx & 63];
161 buf.push_back(obyte);
163 buf.push_back('=');
164 }
165 else if (bitCount == 8)
166 {
167 outBuf <<= 4; //pad to make 12 bits
169 int indx = (int)((outBuf & 0x00000fc0L) >> 6);
170 int obyte = (int)base64encode[indx & 63];
171 buf.push_back(obyte);
173 indx = (int)((outBuf & 0x0000003fL) );
174 obyte = (int)base64encode[indx & 63];
175 buf.push_back(obyte);
177 buf.push_back('=');
178 buf.push_back('=');
179 }
181 DOMString ret = buf;
182 reset();
183 return ret;
184 }
187 DOMString Base64Encoder::encode(const DOMString &str)
188 {
189 Base64Encoder encoder;
190 encoder.append(str);
191 DOMString ret = encoder.finish();
192 return ret;
193 }
197 //#################
198 //# DECODER
199 //#################
201 static int base64decode[] =
202 {
203 /*00*/ -1, -1, -1, -1, -1, -1, -1, -1,
204 /*08*/ -1, -1, -1, -1, -1, -1, -1, -1,
205 /*10*/ -1, -1, -1, -1, -1, -1, -1, -1,
206 /*18*/ -1, -1, -1, -1, -1, -1, -1, -1,
207 /*20*/ -1, -1, -1, -1, -1, -1, -1, -1,
208 /*28*/ -1, -1, -1, 62, -1, -1, -1, 63,
209 /*30*/ 52, 53, 54, 55, 56, 57, 58, 59,
210 /*38*/ 60, 61, -1, -1, -1, -1, -1, -1,
211 /*40*/ -1, 0, 1, 2, 3, 4, 5, 6,
212 /*48*/ 7, 8, 9, 10, 11, 12, 13, 14,
213 /*50*/ 15, 16, 17, 18, 19, 20, 21, 22,
214 /*58*/ 23, 24, 25, -1, -1, -1, -1, -1,
215 /*60*/ -1, 26, 27, 28, 29, 30, 31, 32,
216 /*68*/ 33, 34, 35, 36, 37, 38, 39, 40,
217 /*70*/ 41, 42, 43, 44, 45, 46, 47, 48,
218 /*78*/ 49, 50, 51, -1, -1, -1, -1, -1
219 };
223 /**
224 * Appends one char to the decoder
225 */
226 void Base64Decoder::append(int ch)
227 {
228 if (isspace(ch))
229 return;
230 else if (ch == '=') //padding
231 {
232 inBytes[inCount++] = 0;
233 }
234 else
235 {
236 int byteVal = base64decode[ch & 0x7f];
237 //printf("char:%c %d\n", ch, byteVal);
238 if (byteVal < 0)
239 {
240 //Bad lookup value
241 }
242 inBytes[inCount++] = byteVal;
243 }
245 if (inCount >=4 )
246 {
247 unsigned char b0 = ((inBytes[0]<<2) & 0xfc) | ((inBytes[1]>>4) & 0x03);
248 unsigned char b1 = ((inBytes[1]<<4) & 0xf0) | ((inBytes[2]>>2) & 0x0f);
249 unsigned char b2 = ((inBytes[2]<<6) & 0xc0) | ((inBytes[3] ) & 0x3f);
250 buf.push_back(b0);
251 buf.push_back(b1);
252 buf.push_back(b2);
253 inCount = 0;
254 }
256 }
258 void Base64Decoder::append(char *str)
259 {
260 while (*str)
261 append((int)*str++);
262 }
264 void Base64Decoder::append(const DOMString &str)
265 {
266 append((char *)str.c_str());
267 }
269 std::vector<unsigned char> Base64Decoder::finish()
270 {
271 std::vector<unsigned char> ret = buf;
272 reset();
273 return ret;
274 }
276 std::vector<unsigned char> Base64Decoder::decode(const DOMString &str)
277 {
278 Base64Decoder decoder;
279 decoder.append(str);
280 std::vector<unsigned char> ret = decoder.finish();
281 return ret;
282 }
284 DOMString Base64Decoder::decodeToString(const DOMString &str)
285 {
286 Base64Decoder decoder;
287 decoder.append(str);
288 std::vector<unsigned char> ret = decoder.finish();
289 DOMString buf;
290 for (unsigned int i=0 ; i<ret.size() ; i++)
291 buf.push_back(ret[i]);
292 return buf;
293 }
301 //########################################################################
302 //########################################################################
303 //### S H A 1 H A S H I N G
304 //########################################################################
305 //########################################################################
310 void Sha1::hash(unsigned char *dataIn, int len, unsigned char *digest)
311 {
312 Sha1 sha1;
313 sha1.append(dataIn, len);
314 sha1.finish(digest);
315 }
317 static char *sha1hex = "0123456789abcdef";
319 DOMString Sha1::hashHex(unsigned char *dataIn, int len)
320 {
321 unsigned char hashout[20];
322 hash(dataIn, len, hashout);
323 DOMString ret;
324 for (int i=0 ; i<20 ; i++)
325 {
326 unsigned char ch = hashout[i];
327 ret.push_back(sha1hex[ (ch>>4) & 15 ]);
328 ret.push_back(sha1hex[ ch & 15 ]);
329 }
330 return ret;
331 }
334 void Sha1::init()
335 {
337 lenW = 0;
338 sizeHi = 0;
339 sizeLo = 0;
341 // Initialize H with the magic constants (see FIPS180 for constants)
342 H[0] = 0x67452301L;
343 H[1] = 0xefcdab89L;
344 H[2] = 0x98badcfeL;
345 H[3] = 0x10325476L;
346 H[4] = 0xc3d2e1f0L;
348 for (int i = 0; i < 80; i++)
349 W[i] = 0;
350 }
353 void Sha1::append(unsigned char *dataIn, int len)
354 {
355 // Read the data into W and process blocks as they get full
356 for (int i = 0; i < len; i++)
357 {
358 W[lenW / 4] <<= 8;
359 W[lenW / 4] |= (unsigned long)dataIn[i];
360 if ((++lenW) % 64 == 0)
361 {
362 hashblock();
363 lenW = 0;
364 }
365 sizeLo += 8;
366 sizeHi += (sizeLo < 8);
367 }
368 }
371 void Sha1::finish(unsigned char hashout[20])
372 {
373 unsigned char pad0x80 = 0x80;
374 unsigned char pad0x00 = 0x00;
375 unsigned char padlen[8];
377 // Pad with a binary 1 (e.g. 0x80), then zeroes, then length
378 padlen[0] = (unsigned char)((sizeHi >> 24) & 255);
379 padlen[1] = (unsigned char)((sizeHi >> 16) & 255);
380 padlen[2] = (unsigned char)((sizeHi >> 8) & 255);
381 padlen[3] = (unsigned char)((sizeHi >> 0) & 255);
382 padlen[4] = (unsigned char)((sizeLo >> 24) & 255);
383 padlen[5] = (unsigned char)((sizeLo >> 16) & 255);
384 padlen[6] = (unsigned char)((sizeLo >> 8) & 255);
385 padlen[7] = (unsigned char)((sizeLo >> 0) & 255);
387 append(&pad0x80, 1);
389 while (lenW != 56)
390 append(&pad0x00, 1);
391 append(padlen, 8);
393 // Output hash
394 for (int i = 0; i < 20; i++)
395 {
396 hashout[i] = (unsigned char)(H[i / 4] >> 24);
397 H[i / 4] <<= 8;
398 }
400 // Re-initialize the context (also zeroizes contents)
401 init();
402 }
405 #define SHA_ROTL(X,n) ((((X) << (n)) | ((X) >> (32-(n)))) & 0xffffffffL)
407 void Sha1::hashblock()
408 {
410 for (int t = 16; t <= 79; t++)
411 W[t] = SHA_ROTL(W[t-3] ^ W[t-8] ^ W[t-14] ^ W[t-16], 1);
413 unsigned long A = H[0];
414 unsigned long B = H[1];
415 unsigned long C = H[2];
416 unsigned long D = H[3];
417 unsigned long E = H[4];
419 unsigned long TEMP;
421 for (int t = 0; t <= 19; t++)
422 {
423 TEMP = (SHA_ROTL(A,5) + (((C^D)&B)^D) +
424 E + W[t] + 0x5a827999L) & 0xffffffffL;
425 E = D; D = C; C = SHA_ROTL(B, 30); B = A; A = TEMP;
426 }
427 for (int t = 20; t <= 39; t++)
428 {
429 TEMP = (SHA_ROTL(A,5) + (B^C^D) +
430 E + W[t] + 0x6ed9eba1L) & 0xffffffffL;
431 E = D; D = C; C = SHA_ROTL(B, 30); B = A; A = TEMP;
432 }
433 for (int t = 40; t <= 59; t++)
434 {
435 TEMP = (SHA_ROTL(A,5) + ((B&C)|(D&(B|C))) +
436 E + W[t] + 0x8f1bbcdcL) & 0xffffffffL;
437 E = D; D = C; C = SHA_ROTL(B, 30); B = A; A = TEMP;
438 }
439 for (int t = 60; t <= 79; t++)
440 {
441 TEMP = (SHA_ROTL(A,5) + (B^C^D) +
442 E + W[t] + 0xca62c1d6L) & 0xffffffffL;
443 E = D; D = C; C = SHA_ROTL(B, 30); B = A; A = TEMP;
444 }
446 H[0] += A;
447 H[1] += B;
448 H[2] += C;
449 H[3] += D;
450 H[4] += E;
451 }
458 //########################################################################
459 //########################################################################
460 //### M D 5 H A S H I N G
461 //########################################################################
462 //########################################################################
468 void Md5::hash(unsigned char *dataIn, unsigned long len, unsigned char *digest)
469 {
470 Md5 md5;
471 md5.append(dataIn, len);
472 md5.finish(digest);
473 }
475 DOMString Md5::hashHex(unsigned char *dataIn, unsigned long len)
476 {
477 Md5 md5;
478 md5.append(dataIn, len);
479 DOMString ret = md5.finishHex();
480 return ret;
481 }
483 DOMString Md5::hashHex(const DOMString &str)
484 {
485 Md5 md5;
486 md5.append(str);
487 DOMString ret = md5.finishHex();
488 return ret;
489 }
492 /**
493 * Initialize MD5 polynomials and storage
494 */
495 void Md5::init()
496 {
497 hashBuf[0] = 0x67452301;
498 hashBuf[1] = 0xefcdab89;
499 hashBuf[2] = 0x98badcfe;
500 hashBuf[3] = 0x10325476;
502 nrBytesHi = 0;
503 nrBytesLo = 0;
504 byteNr = 0;
505 longNr = 0;
506 }
511 /*
512 * Update with one character
513 */
514 void Md5::append(unsigned char ch)
515 {
516 if (nrBytesLo == 0xffffffff)
517 {
518 nrBytesLo = 0;
519 nrBytesHi++;
520 }
521 else
522 nrBytesLo++;
524 //pack 64 bytes into 16 longs
525 inb[byteNr++] = (unsigned long)ch;
526 if (byteNr >= 4)
527 {
528 unsigned long val =
529 inb[3] << 24 | inb[2] << 16 | inb[1] << 8 | inb[0];
530 inBuf[longNr++] = val;
531 byteNr = 0;
532 }
533 if (longNr >= 16)
534 {
535 transform();
536 longNr = 0;
537 }
538 }
541 /*
542 * Update context to reflect the concatenation of another buffer full
543 * of bytes.
544 */
545 void Md5::append(unsigned char *source, unsigned long len)
546 {
547 while (len--)
548 append(*source++);
549 }
552 /*
553 * Update context to reflect the concatenation of another string
554 */
555 void Md5::append(const DOMString &str)
556 {
557 append((unsigned char *)str.c_str(), str.size());
558 }
561 /*
562 * Final wrapup - pad to 64-byte boundary with the bit pattern
563 * 1 0* (64-bit count of bits processed, MSB-first)
564 */
565 void Md5::finish(unsigned char *digest)
566 {
567 //snapshot the bit count now before padding
568 unsigned long nrBitsLo = nrBytesLo << 3;
569 unsigned long nrBitsHi = (nrBytesHi << 3) | ((nrBytesLo >> 29) & 7);
571 //Append terminal char
572 append(0x80);
574 //pad until we have a 56 of 64 bits, allowing for 8 bytes at the end
575 while (true)
576 {
577 int remain = (int)(nrBytesLo & 63);
578 if (remain == 56)
579 break;
580 append(0);
581 }
583 //##### Append length in bits
584 int shift;
585 shift = 0;
586 for (int i=0 ; i<4 ; i++)
587 {
588 unsigned char ch = (unsigned char)((nrBitsLo>>shift) & 0xff);
589 append(ch);
590 shift += 8;
591 }
593 shift = 0;
594 for (int i=0 ; i<4 ; i++)
595 {
596 unsigned char ch = (unsigned char)((nrBitsHi>>shift) & 0xff);
597 append(ch);
598 shift += 8;
599 }
601 //copy out answer
602 int indx = 0;
603 for (int i=0 ; i<4 ; i++)
604 {
605 digest[indx++] = (unsigned char)((hashBuf[i] ) & 0xff);
606 digest[indx++] = (unsigned char)((hashBuf[i] >> 8) & 0xff);
607 digest[indx++] = (unsigned char)((hashBuf[i] >> 16) & 0xff);
608 digest[indx++] = (unsigned char)((hashBuf[i] >> 24) & 0xff);
609 }
611 init(); // Security! ;-)
612 }
616 static const char *md5hex = "0123456789abcdef";
618 DOMString Md5::finishHex()
619 {
620 unsigned char hashout[16];
621 finish(hashout);
622 DOMString ret;
623 for (int i=0 ; i<16 ; i++)
624 {
625 unsigned char ch = hashout[i];
626 ret.push_back(md5hex[ (ch>>4) & 15 ]);
627 ret.push_back(md5hex[ ch & 15 ]);
628 }
629 return ret;
630 }
634 //# The four core functions - F1 is optimized somewhat
636 // #define F1(x, y, z) (x & y | ~x & z)
637 #define F1(x, y, z) (z ^ (x & (y ^ z)))
638 #define F2(x, y, z) F1(z, x, y)
639 #define F3(x, y, z) (x ^ y ^ z)
640 #define F4(x, y, z) (y ^ (x | ~z))
642 // ## This is the central step in the MD5 algorithm.
643 #define MD5STEP(f, w, x, y, z, data, s) \
644 ( w += f(x, y, z) + data, w = w<<s | w>>(32-s), w += x )
646 /*
647 * The core of the MD5 algorithm, this alters an existing MD5 hash to
648 * reflect the addition of 16 longwords of new data. MD5Update blocks
649 * the data and converts bytes into longwords for this routine.
650 * @parm buf points to an array of 4 unsigned longs
651 * @parm in points to an array of 16 unsigned longs
652 */
653 void Md5::transform()
654 {
655 unsigned long *i = inBuf;
656 unsigned long a = hashBuf[0];
657 unsigned long b = hashBuf[1];
658 unsigned long c = hashBuf[2];
659 unsigned long d = hashBuf[3];
661 MD5STEP(F1, a, b, c, d, i[ 0] + 0xd76aa478, 7);
662 MD5STEP(F1, d, a, b, c, i[ 1] + 0xe8c7b756, 12);
663 MD5STEP(F1, c, d, a, b, i[ 2] + 0x242070db, 17);
664 MD5STEP(F1, b, c, d, a, i[ 3] + 0xc1bdceee, 22);
665 MD5STEP(F1, a, b, c, d, i[ 4] + 0xf57c0faf, 7);
666 MD5STEP(F1, d, a, b, c, i[ 5] + 0x4787c62a, 12);
667 MD5STEP(F1, c, d, a, b, i[ 6] + 0xa8304613, 17);
668 MD5STEP(F1, b, c, d, a, i[ 7] + 0xfd469501, 22);
669 MD5STEP(F1, a, b, c, d, i[ 8] + 0x698098d8, 7);
670 MD5STEP(F1, d, a, b, c, i[ 9] + 0x8b44f7af, 12);
671 MD5STEP(F1, c, d, a, b, i[10] + 0xffff5bb1, 17);
672 MD5STEP(F1, b, c, d, a, i[11] + 0x895cd7be, 22);
673 MD5STEP(F1, a, b, c, d, i[12] + 0x6b901122, 7);
674 MD5STEP(F1, d, a, b, c, i[13] + 0xfd987193, 12);
675 MD5STEP(F1, c, d, a, b, i[14] + 0xa679438e, 17);
676 MD5STEP(F1, b, c, d, a, i[15] + 0x49b40821, 22);
678 MD5STEP(F2, a, b, c, d, i[ 1] + 0xf61e2562, 5);
679 MD5STEP(F2, d, a, b, c, i[ 6] + 0xc040b340, 9);
680 MD5STEP(F2, c, d, a, b, i[11] + 0x265e5a51, 14);
681 MD5STEP(F2, b, c, d, a, i[ 0] + 0xe9b6c7aa, 20);
682 MD5STEP(F2, a, b, c, d, i[ 5] + 0xd62f105d, 5);
683 MD5STEP(F2, d, a, b, c, i[10] + 0x02441453, 9);
684 MD5STEP(F2, c, d, a, b, i[15] + 0xd8a1e681, 14);
685 MD5STEP(F2, b, c, d, a, i[ 4] + 0xe7d3fbc8, 20);
686 MD5STEP(F2, a, b, c, d, i[ 9] + 0x21e1cde6, 5);
687 MD5STEP(F2, d, a, b, c, i[14] + 0xc33707d6, 9);
688 MD5STEP(F2, c, d, a, b, i[ 3] + 0xf4d50d87, 14);
689 MD5STEP(F2, b, c, d, a, i[ 8] + 0x455a14ed, 20);
690 MD5STEP(F2, a, b, c, d, i[13] + 0xa9e3e905, 5);
691 MD5STEP(F2, d, a, b, c, i[ 2] + 0xfcefa3f8, 9);
692 MD5STEP(F2, c, d, a, b, i[ 7] + 0x676f02d9, 14);
693 MD5STEP(F2, b, c, d, a, i[12] + 0x8d2a4c8a, 20);
695 MD5STEP(F3, a, b, c, d, i[ 5] + 0xfffa3942, 4);
696 MD5STEP(F3, d, a, b, c, i[ 8] + 0x8771f681, 11);
697 MD5STEP(F3, c, d, a, b, i[11] + 0x6d9d6122, 16);
698 MD5STEP(F3, b, c, d, a, i[14] + 0xfde5380c, 23);
699 MD5STEP(F3, a, b, c, d, i[ 1] + 0xa4beea44, 4);
700 MD5STEP(F3, d, a, b, c, i[ 4] + 0x4bdecfa9, 11);
701 MD5STEP(F3, c, d, a, b, i[ 7] + 0xf6bb4b60, 16);
702 MD5STEP(F3, b, c, d, a, i[10] + 0xbebfbc70, 23);
703 MD5STEP(F3, a, b, c, d, i[13] + 0x289b7ec6, 4);
704 MD5STEP(F3, d, a, b, c, i[ 0] + 0xeaa127fa, 11);
705 MD5STEP(F3, c, d, a, b, i[ 3] + 0xd4ef3085, 16);
706 MD5STEP(F3, b, c, d, a, i[ 6] + 0x04881d05, 23);
707 MD5STEP(F3, a, b, c, d, i[ 9] + 0xd9d4d039, 4);
708 MD5STEP(F3, d, a, b, c, i[12] + 0xe6db99e5, 11);
709 MD5STEP(F3, c, d, a, b, i[15] + 0x1fa27cf8, 16);
710 MD5STEP(F3, b, c, d, a, i[ 2] + 0xc4ac5665, 23);
712 MD5STEP(F4, a, b, c, d, i[ 0] + 0xf4292244, 6);
713 MD5STEP(F4, d, a, b, c, i[ 7] + 0x432aff97, 10);
714 MD5STEP(F4, c, d, a, b, i[14] + 0xab9423a7, 15);
715 MD5STEP(F4, b, c, d, a, i[ 5] + 0xfc93a039, 21);
716 MD5STEP(F4, a, b, c, d, i[12] + 0x655b59c3, 6);
717 MD5STEP(F4, d, a, b, c, i[ 3] + 0x8f0ccc92, 10);
718 MD5STEP(F4, c, d, a, b, i[10] + 0xffeff47d, 15);
719 MD5STEP(F4, b, c, d, a, i[ 1] + 0x85845dd1, 21);
720 MD5STEP(F4, a, b, c, d, i[ 8] + 0x6fa87e4f, 6);
721 MD5STEP(F4, d, a, b, c, i[15] + 0xfe2ce6e0, 10);
722 MD5STEP(F4, c, d, a, b, i[ 6] + 0xa3014314, 15);
723 MD5STEP(F4, b, c, d, a, i[13] + 0x4e0811a1, 21);
724 MD5STEP(F4, a, b, c, d, i[ 4] + 0xf7537e82, 6);
725 MD5STEP(F4, d, a, b, c, i[11] + 0xbd3af235, 10);
726 MD5STEP(F4, c, d, a, b, i[ 2] + 0x2ad7d2bb, 15);
727 MD5STEP(F4, b, c, d, a, i[ 9] + 0xeb86d391, 21);
729 hashBuf[0] += a;
730 hashBuf[1] += b;
731 hashBuf[2] += c;
732 hashBuf[3] += d;
733 }
741 //########################################################################
742 //########################################################################
743 //### T H R E A D
744 //########################################################################
745 //########################################################################
751 #ifdef __WIN32__
754 static DWORD WINAPI WinThreadFunction(LPVOID context)
755 {
756 Thread *thread = (Thread *)context;
757 thread->execute();
758 return 0;
759 }
762 void Thread::start()
763 {
764 DWORD dwThreadId;
765 HANDLE hThread = CreateThread(NULL, 0, WinThreadFunction,
766 (LPVOID)this, 0, &dwThreadId);
767 //Make sure the thread is started before 'this' is deallocated
768 while (!started)
769 sleep(10);
770 CloseHandle(hThread);
771 }
773 void Thread::sleep(unsigned long millis)
774 {
775 Sleep(millis);
776 }
778 #else /* UNIX */
781 void *PthreadThreadFunction(void *context)
782 {
783 Thread *thread = (Thread *)context;
784 thread->execute();
785 return NULL;
786 }
789 void Thread::start()
790 {
791 pthread_t thread;
793 int ret = pthread_create(&thread, NULL,
794 PthreadThreadFunction, (void *)this);
795 if (ret != 0)
796 printf("Thread::start: thread creation failed: %s\n", strerror(ret));
798 //Make sure the thread is started before 'this' is deallocated
799 while (!started)
800 sleep(10);
802 }
804 void Thread::sleep(unsigned long millis)
805 {
806 timespec requested;
807 requested.tv_sec = millis / 1000;
808 requested.tv_nsec = (millis % 1000 ) * 1000000L;
809 nanosleep(&requested, NULL);
810 }
812 #endif
821 //########################################################################
822 //########################################################################
823 //### S O C K E T
824 //########################################################################
825 //########################################################################
831 //#########################################################################
832 //# U T I L I T Y
833 //#########################################################################
835 static void mybzero(void *s, size_t n)
836 {
837 unsigned char *p = (unsigned char *)s;
838 while (n > 0)
839 {
840 *p++ = (unsigned char)0;
841 n--;
842 }
843 }
845 static void mybcopy(void *src, void *dest, size_t n)
846 {
847 unsigned char *p = (unsigned char *)dest;
848 unsigned char *q = (unsigned char *)src;
849 while (n > 0)
850 {
851 *p++ = *q++;
852 n--;
853 }
854 }
858 //#########################################################################
859 //# T C P C O N N E C T I O N
860 //#########################################################################
862 TcpSocket::TcpSocket()
863 {
864 init();
865 }
868 TcpSocket::TcpSocket(const std::string &hostnameArg, int port)
869 {
870 init();
871 hostname = hostnameArg;
872 portno = port;
873 }
876 #ifdef HAVE_SSL
878 static void cryptoLockCallback(int mode, int type, const char *file, int line)
879 {
880 //printf("########### LOCK\n");
881 static int modes[CRYPTO_NUM_LOCKS]; /* = {0, 0, ... } */
882 const char *errstr = NULL;
884 int rw = mode & (CRYPTO_READ|CRYPTO_WRITE);
885 if (!((rw == CRYPTO_READ) || (rw == CRYPTO_WRITE)))
886 {
887 errstr = "invalid mode";
888 goto err;
889 }
891 if (type < 0 || type >= CRYPTO_NUM_LOCKS)
892 {
893 errstr = "type out of bounds";
894 goto err;
895 }
897 if (mode & CRYPTO_LOCK)
898 {
899 if (modes[type])
900 {
901 errstr = "already locked";
902 /* must not happen in a single-threaded program
903 * (would deadlock)
904 */
905 goto err;
906 }
908 modes[type] = rw;
909 }
910 else if (mode & CRYPTO_UNLOCK)
911 {
912 if (!modes[type])
913 {
914 errstr = "not locked";
915 goto err;
916 }
918 if (modes[type] != rw)
919 {
920 errstr = (rw == CRYPTO_READ) ?
921 "CRYPTO_r_unlock on write lock" :
922 "CRYPTO_w_unlock on read lock";
923 }
925 modes[type] = 0;
926 }
927 else
928 {
929 errstr = "invalid mode";
930 goto err;
931 }
933 err:
934 if (errstr)
935 {
936 /* we cannot use bio_err here */
937 fprintf(stderr, "openssl (lock_dbg_cb): %s (mode=%d, type=%d) at %s:%d\n",
938 errstr, mode, type, file, line);
939 }
940 }
942 static unsigned long cryptoIdCallback()
943 {
944 #ifdef __WIN32__
945 unsigned long ret = (unsigned long) GetCurrentThreadId();
946 #else
947 unsigned long ret = (unsigned long) pthread_self();
948 #endif
949 return ret;
950 }
952 #endif
955 TcpSocket::TcpSocket(const TcpSocket &other)
956 {
957 init();
958 sock = other.sock;
959 hostname = other.hostname;
960 portno = other.portno;
961 }
963 static bool tcp_socket_inited = false;
965 void TcpSocket::init()
966 {
967 if (!tcp_socket_inited)
968 {
969 #ifdef __WIN32__
970 WORD wVersionRequested = MAKEWORD( 2, 2 );
971 WSADATA wsaData;
972 WSAStartup( wVersionRequested, &wsaData );
973 #endif
974 #ifdef HAVE_SSL
975 if (libssl_is_present)
976 {
977 sslStream = NULL;
978 sslContext = NULL;
979 CRYPTO_set_locking_callback(cryptoLockCallback);
980 CRYPTO_set_id_callback(cryptoIdCallback);
981 SSL_library_init();
982 SSL_load_error_strings();
983 }
984 #endif
985 tcp_socket_inited = true;
986 }
987 sock = -1;
988 connected = false;
989 hostname = "";
990 portno = -1;
991 sslEnabled = false;
992 receiveTimeout = 0;
993 }
995 TcpSocket::~TcpSocket()
996 {
997 disconnect();
998 }
1000 bool TcpSocket::isConnected()
1001 {
1002 if (!connected || sock < 0)
1003 return false;
1004 return true;
1005 }
1007 bool TcpSocket::getHaveSSL()
1008 {
1009 #ifdef HAVE_SSL
1010 if (libssl_is_present)
1011 {
1012 return true;
1013 } else {
1014 return false;
1015 }
1016 #else
1017 return false;
1018 #endif
1019 }
1021 void TcpSocket::enableSSL(bool val)
1022 {
1023 sslEnabled = val;
1024 }
1026 bool TcpSocket::getEnableSSL()
1027 {
1028 return sslEnabled;
1029 }
1033 bool TcpSocket::connect(const std::string &hostnameArg, int portnoArg)
1034 {
1035 hostname = hostnameArg;
1036 portno = portnoArg;
1037 return connect();
1038 }
1042 #ifdef HAVE_SSL
1043 /*
1044 static int password_cb(char *buf, int bufLen, int rwflag, void *userdata)
1045 {
1046 char *password = "password";
1047 if (bufLen < (int)(strlen(password)+1))
1048 return 0;
1050 strcpy(buf,password);
1051 int ret = strlen(password);
1052 return ret;
1053 }
1055 static void infoCallback(const SSL *ssl, int where, int ret)
1056 {
1057 switch (where)
1058 {
1059 case SSL_CB_ALERT:
1060 {
1061 printf("## %d SSL ALERT: %s\n", where, SSL_alert_desc_string_long(ret));
1062 break;
1063 }
1064 default:
1065 {
1066 printf("## %d SSL: %s\n", where, SSL_state_string_long(ssl));
1067 break;
1068 }
1069 }
1070 }
1071 */
1072 #endif
1075 bool TcpSocket::startTls()
1076 {
1077 #ifndef HAVE_SSL
1078 fprintf(stderr,
1079 "SSL starttls() error: client not compiled with SSL enabled\n");
1080 return false;
1081 #else /*HAVE_SSL*/
1082 if (!libssl_is_present)
1083 {
1084 fprintf(stderr,
1085 "SSL starttls() error: the correct version of libssl was not found \n");
1086 return false;
1087 } else {
1089 sslStream = NULL;
1090 sslContext = NULL;
1092 //SSL_METHOD *meth = SSLv23_method();
1093 //SSL_METHOD *meth = SSLv3_client_method();
1094 SSL_METHOD *meth = TLSv1_client_method();
1095 sslContext = SSL_CTX_new(meth);
1096 //SSL_CTX_set_info_callback(sslContext, infoCallback);
1098 /**
1099 * For now, let's accept all connections. Ignore this
1100 * block of code
1101 *
1102 char *keyFile = "client.pem";
1103 char *caList = "root.pem";
1104 //# Load our keys and certificates
1105 if (!(SSL_CTX_use_certificate_chain_file(sslContext, keyFile)))
1106 {
1107 fprintf(stderr, "Can't read certificate file\n");
1108 disconnect();
1109 return false;
1110 }
1112 SSL_CTX_set_default_passwd_cb(sslContext, password_cb);
1114 if (!(SSL_CTX_use_PrivateKey_file(sslContext, keyFile, SSL_FILETYPE_PEM)))
1115 {
1116 fprintf(stderr, "Can't read key file\n");
1117 disconnect();
1118 return false;
1119 }
1121 //## Load the CAs we trust
1122 if (!(SSL_CTX_load_verify_locations(sslContext, caList, 0)))
1123 {
1124 fprintf(stderr, "Can't read CA list\n");
1125 disconnect();
1126 return false;
1127 }
1128 */
1130 /* Connect the SSL socket */
1131 sslStream = SSL_new(sslContext);
1132 SSL_set_fd(sslStream, sock);
1134 int ret = SSL_connect(sslStream);
1135 if (ret == 0)
1136 {
1137 fprintf(stderr, "SSL connection not successful\n");
1138 disconnect();
1139 return false;
1140 }
1141 else if (ret < 0)
1142 {
1143 int err = SSL_get_error(sslStream, ret);
1144 fprintf(stderr, "SSL connect error %d\n", err);
1145 disconnect();
1146 return false;
1147 }
1149 sslEnabled = true;
1150 return true;
1151 }
1152 #endif /* HAVE_SSL */
1153 }
1156 bool TcpSocket::connect()
1157 {
1158 if (hostname.size()<1)
1159 {
1160 fprintf(stderr, "open: null hostname\n");
1161 return false;
1162 }
1164 if (portno<1)
1165 {
1166 fprintf(stderr, "open: bad port number\n");
1167 return false;
1168 }
1170 sock = socket(PF_INET, SOCK_STREAM, 0);
1171 if (sock < 0)
1172 {
1173 fprintf(stderr, "open: error creating socket\n");
1174 return false;
1175 }
1177 char *c_hostname = (char *)hostname.c_str();
1178 struct hostent *server = gethostbyname(c_hostname);
1179 if (!server)
1180 {
1181 fprintf(stderr, "open: could not locate host '%s'\n", c_hostname);
1182 return false;
1183 }
1185 struct sockaddr_in serv_addr;
1186 mybzero((char *) &serv_addr, sizeof(serv_addr));
1187 serv_addr.sin_family = AF_INET;
1188 mybcopy((char *)server->h_addr, (char *)&serv_addr.sin_addr.s_addr,
1189 server->h_length);
1190 serv_addr.sin_port = htons(portno);
1192 int ret = ::connect(sock, (const sockaddr *)&serv_addr, sizeof(serv_addr));
1193 if (ret < 0)
1194 {
1195 fprintf(stderr, "open: could not connect to host '%s'\n", c_hostname);
1196 return false;
1197 }
1199 if (sslEnabled)
1200 {
1201 if (!startTls())
1202 return false;
1203 }
1204 connected = true;
1205 return true;
1206 }
1208 bool TcpSocket::disconnect()
1209 {
1210 bool ret = true;
1211 connected = false;
1212 #ifdef HAVE_SSL
1213 if (libssl_is_present)
1214 {
1215 if (sslEnabled)
1216 {
1217 if (sslStream)
1218 {
1219 int r = SSL_shutdown(sslStream);
1220 switch(r)
1221 {
1222 case 1:
1223 break; /* Success */
1224 case 0:
1225 case -1:
1226 default:
1227 //printf("Shutdown failed");
1228 ret = false;
1229 }
1230 SSL_free(sslStream);
1231 }
1232 if (sslContext)
1233 SSL_CTX_free(sslContext);
1234 }
1235 sslStream = NULL;
1236 sslContext = NULL;
1237 }
1238 #endif /*HAVE_SSL*/
1240 #ifdef __WIN32__
1241 closesocket(sock);
1242 #else
1243 ::close(sock);
1244 #endif
1245 sock = -1;
1246 sslEnabled = false;
1248 return ret;
1249 }
1253 bool TcpSocket::setReceiveTimeout(unsigned long millis)
1254 {
1255 receiveTimeout = millis;
1256 return true;
1257 }
1259 /**
1260 * For normal sockets, return the number of bytes waiting to be received.
1261 * For SSL, just return >0 when something is ready to be read.
1262 */
1263 long TcpSocket::available()
1264 {
1265 if (!isConnected())
1266 return -1;
1268 long count = 0;
1269 #ifdef __WIN32__
1270 if (ioctlsocket(sock, FIONREAD, (unsigned long *)&count) != 0)
1271 return -1;
1272 #else
1273 if (ioctl(sock, FIONREAD, &count) != 0)
1274 return -1;
1275 #endif
1276 if (count<=0 && sslEnabled)
1277 {
1278 #ifdef HAVE_SSL
1279 if (libssl_is_present)
1280 {
1281 return SSL_pending(sslStream);
1282 }
1283 #endif
1284 }
1285 return count;
1286 }
1290 bool TcpSocket::write(int ch)
1291 {
1292 if (!isConnected())
1293 {
1294 fprintf(stderr, "write: socket closed\n");
1295 return false;
1296 }
1297 unsigned char c = (unsigned char)ch;
1299 if (sslEnabled)
1300 {
1301 #ifdef HAVE_SSL
1302 if (libssl_is_present)
1303 {
1304 int r = SSL_write(sslStream, &c, 1);
1305 if (r<=0)
1306 {
1307 switch(SSL_get_error(sslStream, r))
1308 {
1309 default:
1310 fprintf(stderr, "SSL write problem");
1311 return -1;
1312 }
1313 }
1314 }
1315 #endif
1316 }
1317 else
1318 {
1319 if (send(sock, (const char *)&c, 1, 0) < 0)
1320 //if (send(sock, &c, 1, 0) < 0)
1321 {
1322 fprintf(stderr, "write: could not send data\n");
1323 return false;
1324 }
1325 }
1326 return true;
1327 }
1329 bool TcpSocket::write(char *str)
1330 {
1331 if (!isConnected())
1332 {
1333 fprintf(stderr, "write(str): socket closed\n");
1334 return false;
1335 }
1336 int len = strlen(str);
1338 if (sslEnabled)
1339 {
1340 #ifdef HAVE_SSL
1341 if (libssl_is_present)
1342 {
1343 int r = SSL_write(sslStream, (unsigned char *)str, len);
1344 if (r<=0)
1345 {
1346 switch(SSL_get_error(sslStream, r))
1347 {
1348 default:
1349 fprintf(stderr, "SSL write problem");
1350 return -1;
1351 }
1352 }
1353 }
1354 #endif
1355 }
1356 else
1357 {
1358 if (send(sock, str, len, 0) < 0)
1359 //if (send(sock, &c, 1, 0) < 0)
1360 {
1361 fprintf(stderr, "write: could not send data\n");
1362 return false;
1363 }
1364 }
1365 return true;
1366 }
1368 bool TcpSocket::write(const std::string &str)
1369 {
1370 return write((char *)str.c_str());
1371 }
1373 int TcpSocket::read()
1374 {
1375 if (!isConnected())
1376 return -1;
1378 //We'll use this loop for timeouts, so that SSL and plain sockets
1379 //will behave the same way
1380 if (receiveTimeout > 0)
1381 {
1382 unsigned long tim = 0;
1383 while (true)
1384 {
1385 int avail = available();
1386 if (avail > 0)
1387 break;
1388 if (tim >= receiveTimeout)
1389 return -2;
1390 Thread::sleep(20);
1391 tim += 20;
1392 }
1393 }
1395 //check again
1396 if (!isConnected())
1397 return -1;
1399 unsigned char ch;
1400 if (sslEnabled)
1401 {
1402 #ifdef HAVE_SSL
1403 if (libssl_is_present)
1404 {
1405 if (!sslStream)
1406 return -1;
1407 int r = SSL_read(sslStream, &ch, 1);
1408 unsigned long err = SSL_get_error(sslStream, r);
1409 switch (err)
1410 {
1411 case SSL_ERROR_NONE:
1412 break;
1413 case SSL_ERROR_ZERO_RETURN:
1414 return -1;
1415 case SSL_ERROR_SYSCALL:
1416 fprintf(stderr, "SSL read problem(syscall) %s\n",
1417 ERR_error_string(ERR_get_error(), NULL));
1418 return -1;
1419 default:
1420 fprintf(stderr, "SSL read problem %s\n",
1421 ERR_error_string(ERR_get_error(), NULL));
1422 return -1;
1423 }
1424 }
1425 #endif
1426 }
1427 else
1428 {
1429 if (recv(sock, (char *)&ch, 1, 0) <= 0)
1430 {
1431 fprintf(stderr, "read: could not receive data\n");
1432 disconnect();
1433 return -1;
1434 }
1435 }
1436 return (int)ch;
1437 }
1439 std::string TcpSocket::readLine()
1440 {
1441 std::string ret;
1443 while (isConnected())
1444 {
1445 int ch = read();
1446 if (ch<0)
1447 return ret;
1448 if (ch=='\r' || ch=='\n')
1449 return ret;
1450 ret.push_back((char)ch);
1451 }
1453 return ret;
1454 }
1464 } //namespace Pedro
1465 //########################################################################
1466 //# E N D O F F I L E
1467 //########################################################################