Alexandre Savard | 1b09e31 | 2012-08-07 20:33:29 -0400 | [diff] [blame] | 1 | /* crypto/bio/b_print.c */ |
| 2 | /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) |
| 3 | * All rights reserved. |
| 4 | * |
| 5 | * This package is an SSL implementation written |
| 6 | * by Eric Young (eay@cryptsoft.com). |
| 7 | * The implementation was written so as to conform with Netscapes SSL. |
| 8 | * |
| 9 | * This library is free for commercial and non-commercial use as long as |
| 10 | * the following conditions are aheared to. The following conditions |
| 11 | * apply to all code found in this distribution, be it the RC4, RSA, |
| 12 | * lhash, DES, etc., code; not just the SSL code. The SSL documentation |
| 13 | * included with this distribution is covered by the same copyright terms |
| 14 | * except that the holder is Tim Hudson (tjh@cryptsoft.com). |
| 15 | * |
| 16 | * Copyright remains Eric Young's, and as such any Copyright notices in |
| 17 | * the code are not to be removed. |
| 18 | * If this package is used in a product, Eric Young should be given attribution |
| 19 | * as the author of the parts of the library used. |
| 20 | * This can be in the form of a textual message at program startup or |
| 21 | * in documentation (online or textual) provided with the package. |
| 22 | * |
| 23 | * Redistribution and use in source and binary forms, with or without |
| 24 | * modification, are permitted provided that the following conditions |
| 25 | * are met: |
| 26 | * 1. Redistributions of source code must retain the copyright |
| 27 | * notice, this list of conditions and the following disclaimer. |
| 28 | * 2. Redistributions in binary form must reproduce the above copyright |
| 29 | * notice, this list of conditions and the following disclaimer in the |
| 30 | * documentation and/or other materials provided with the distribution. |
| 31 | * 3. All advertising materials mentioning features or use of this software |
| 32 | * must display the following acknowledgement: |
| 33 | * "This product includes cryptographic software written by |
| 34 | * Eric Young (eay@cryptsoft.com)" |
| 35 | * The word 'cryptographic' can be left out if the rouines from the library |
| 36 | * being used are not cryptographic related :-). |
| 37 | * 4. If you include any Windows specific code (or a derivative thereof) from |
| 38 | * the apps directory (application code) you must include an acknowledgement: |
| 39 | * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" |
| 40 | * |
| 41 | * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND |
| 42 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 43 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| 44 | * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE |
| 45 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| 46 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| 47 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| 48 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| 49 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| 50 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| 51 | * SUCH DAMAGE. |
| 52 | * |
| 53 | * The licence and distribution terms for any publically available version or |
| 54 | * derivative of this code cannot be changed. i.e. this code cannot simply be |
| 55 | * copied and put under another distribution licence |
| 56 | * [including the GNU Public Licence.] |
| 57 | */ |
| 58 | |
| 59 | /* disable assert() unless BIO_DEBUG has been defined */ |
| 60 | #ifndef BIO_DEBUG |
| 61 | # ifndef NDEBUG |
| 62 | # define NDEBUG |
| 63 | # endif |
| 64 | #endif |
| 65 | |
| 66 | /* |
| 67 | * Stolen from tjh's ssl/ssl_trc.c stuff. |
| 68 | */ |
| 69 | |
| 70 | #include <stdio.h> |
| 71 | #include <string.h> |
| 72 | #include <ctype.h> |
| 73 | #include <assert.h> |
| 74 | #include <limits.h> |
| 75 | #include "cryptlib.h" |
| 76 | #ifndef NO_SYS_TYPES_H |
| 77 | #include <sys/types.h> |
| 78 | #endif |
| 79 | #include <openssl/bn.h> /* To get BN_LLONG properly defined */ |
| 80 | #include <openssl/bio.h> |
| 81 | |
| 82 | #if defined(BN_LLONG) || defined(SIXTY_FOUR_BIT) |
| 83 | # ifndef HAVE_LONG_LONG |
| 84 | # define HAVE_LONG_LONG 1 |
| 85 | # endif |
| 86 | #endif |
| 87 | |
| 88 | /***************************************************************************/ |
| 89 | |
| 90 | /* |
| 91 | * Copyright Patrick Powell 1995 |
| 92 | * This code is based on code written by Patrick Powell <papowell@astart.com> |
| 93 | * It may be used for any purpose as long as this notice remains intact |
| 94 | * on all source code distributions. |
| 95 | */ |
| 96 | |
| 97 | /* |
| 98 | * This code contains numerious changes and enhancements which were |
| 99 | * made by lots of contributors over the last years to Patrick Powell's |
| 100 | * original code: |
| 101 | * |
| 102 | * o Patrick Powell <papowell@astart.com> (1995) |
| 103 | * o Brandon Long <blong@fiction.net> (1996, for Mutt) |
| 104 | * o Thomas Roessler <roessler@guug.de> (1998, for Mutt) |
| 105 | * o Michael Elkins <me@cs.hmc.edu> (1998, for Mutt) |
| 106 | * o Andrew Tridgell <tridge@samba.org> (1998, for Samba) |
| 107 | * o Luke Mewburn <lukem@netbsd.org> (1999, for LukemFTP) |
| 108 | * o Ralf S. Engelschall <rse@engelschall.com> (1999, for Pth) |
| 109 | * o ... (for OpenSSL) |
| 110 | */ |
| 111 | |
| 112 | #ifdef HAVE_LONG_DOUBLE |
| 113 | #define LDOUBLE long double |
| 114 | #else |
| 115 | #define LDOUBLE double |
| 116 | #endif |
| 117 | |
| 118 | #ifdef HAVE_LONG_LONG |
| 119 | # if defined(_WIN32) && !defined(__GNUC__) |
| 120 | # define LLONG __int64 |
| 121 | # else |
| 122 | # define LLONG long long |
| 123 | # endif |
| 124 | #else |
| 125 | #define LLONG long |
| 126 | #endif |
| 127 | |
| 128 | static void fmtstr (char **, char **, size_t *, size_t *, |
| 129 | const char *, int, int, int); |
| 130 | static void fmtint (char **, char **, size_t *, size_t *, |
| 131 | LLONG, int, int, int, int); |
| 132 | static void fmtfp (char **, char **, size_t *, size_t *, |
| 133 | LDOUBLE, int, int, int); |
| 134 | static void doapr_outch (char **, char **, size_t *, size_t *, int); |
| 135 | static void _dopr(char **sbuffer, char **buffer, |
| 136 | size_t *maxlen, size_t *retlen, int *truncated, |
| 137 | const char *format, va_list args); |
| 138 | |
| 139 | /* format read states */ |
| 140 | #define DP_S_DEFAULT 0 |
| 141 | #define DP_S_FLAGS 1 |
| 142 | #define DP_S_MIN 2 |
| 143 | #define DP_S_DOT 3 |
| 144 | #define DP_S_MAX 4 |
| 145 | #define DP_S_MOD 5 |
| 146 | #define DP_S_CONV 6 |
| 147 | #define DP_S_DONE 7 |
| 148 | |
| 149 | /* format flags - Bits */ |
| 150 | #define DP_F_MINUS (1 << 0) |
| 151 | #define DP_F_PLUS (1 << 1) |
| 152 | #define DP_F_SPACE (1 << 2) |
| 153 | #define DP_F_NUM (1 << 3) |
| 154 | #define DP_F_ZERO (1 << 4) |
| 155 | #define DP_F_UP (1 << 5) |
| 156 | #define DP_F_UNSIGNED (1 << 6) |
| 157 | |
| 158 | /* conversion flags */ |
| 159 | #define DP_C_SHORT 1 |
| 160 | #define DP_C_LONG 2 |
| 161 | #define DP_C_LDOUBLE 3 |
| 162 | #define DP_C_LLONG 4 |
| 163 | |
| 164 | /* some handy macros */ |
| 165 | #define char_to_int(p) (p - '0') |
| 166 | #define OSSL_MAX(p,q) ((p >= q) ? p : q) |
| 167 | |
| 168 | static void |
| 169 | _dopr( |
| 170 | char **sbuffer, |
| 171 | char **buffer, |
| 172 | size_t *maxlen, |
| 173 | size_t *retlen, |
| 174 | int *truncated, |
| 175 | const char *format, |
| 176 | va_list args) |
| 177 | { |
| 178 | char ch; |
| 179 | LLONG value; |
| 180 | LDOUBLE fvalue; |
| 181 | char *strvalue; |
| 182 | int min; |
| 183 | int max; |
| 184 | int state; |
| 185 | int flags; |
| 186 | int cflags; |
| 187 | size_t currlen; |
| 188 | |
| 189 | state = DP_S_DEFAULT; |
| 190 | flags = currlen = cflags = min = 0; |
| 191 | max = -1; |
| 192 | ch = *format++; |
| 193 | |
| 194 | while (state != DP_S_DONE) { |
| 195 | if (ch == '\0' || (buffer == NULL && currlen >= *maxlen)) |
| 196 | state = DP_S_DONE; |
| 197 | |
| 198 | switch (state) { |
| 199 | case DP_S_DEFAULT: |
| 200 | if (ch == '%') |
| 201 | state = DP_S_FLAGS; |
| 202 | else |
| 203 | doapr_outch(sbuffer,buffer, &currlen, maxlen, ch); |
| 204 | ch = *format++; |
| 205 | break; |
| 206 | case DP_S_FLAGS: |
| 207 | switch (ch) { |
| 208 | case '-': |
| 209 | flags |= DP_F_MINUS; |
| 210 | ch = *format++; |
| 211 | break; |
| 212 | case '+': |
| 213 | flags |= DP_F_PLUS; |
| 214 | ch = *format++; |
| 215 | break; |
| 216 | case ' ': |
| 217 | flags |= DP_F_SPACE; |
| 218 | ch = *format++; |
| 219 | break; |
| 220 | case '#': |
| 221 | flags |= DP_F_NUM; |
| 222 | ch = *format++; |
| 223 | break; |
| 224 | case '0': |
| 225 | flags |= DP_F_ZERO; |
| 226 | ch = *format++; |
| 227 | break; |
| 228 | default: |
| 229 | state = DP_S_MIN; |
| 230 | break; |
| 231 | } |
| 232 | break; |
| 233 | case DP_S_MIN: |
| 234 | if (isdigit((unsigned char)ch)) { |
| 235 | min = 10 * min + char_to_int(ch); |
| 236 | ch = *format++; |
| 237 | } else if (ch == '*') { |
| 238 | min = va_arg(args, int); |
| 239 | ch = *format++; |
| 240 | state = DP_S_DOT; |
| 241 | } else |
| 242 | state = DP_S_DOT; |
| 243 | break; |
| 244 | case DP_S_DOT: |
| 245 | if (ch == '.') { |
| 246 | state = DP_S_MAX; |
| 247 | ch = *format++; |
| 248 | } else |
| 249 | state = DP_S_MOD; |
| 250 | break; |
| 251 | case DP_S_MAX: |
| 252 | if (isdigit((unsigned char)ch)) { |
| 253 | if (max < 0) |
| 254 | max = 0; |
| 255 | max = 10 * max + char_to_int(ch); |
| 256 | ch = *format++; |
| 257 | } else if (ch == '*') { |
| 258 | max = va_arg(args, int); |
| 259 | ch = *format++; |
| 260 | state = DP_S_MOD; |
| 261 | } else |
| 262 | state = DP_S_MOD; |
| 263 | break; |
| 264 | case DP_S_MOD: |
| 265 | switch (ch) { |
| 266 | case 'h': |
| 267 | cflags = DP_C_SHORT; |
| 268 | ch = *format++; |
| 269 | break; |
| 270 | case 'l': |
| 271 | if (*format == 'l') { |
| 272 | cflags = DP_C_LLONG; |
| 273 | format++; |
| 274 | } else |
| 275 | cflags = DP_C_LONG; |
| 276 | ch = *format++; |
| 277 | break; |
| 278 | case 'q': |
| 279 | cflags = DP_C_LLONG; |
| 280 | ch = *format++; |
| 281 | break; |
| 282 | case 'L': |
| 283 | cflags = DP_C_LDOUBLE; |
| 284 | ch = *format++; |
| 285 | break; |
| 286 | default: |
| 287 | break; |
| 288 | } |
| 289 | state = DP_S_CONV; |
| 290 | break; |
| 291 | case DP_S_CONV: |
| 292 | switch (ch) { |
| 293 | case 'd': |
| 294 | case 'i': |
| 295 | switch (cflags) { |
| 296 | case DP_C_SHORT: |
| 297 | value = (short int)va_arg(args, int); |
| 298 | break; |
| 299 | case DP_C_LONG: |
| 300 | value = va_arg(args, long int); |
| 301 | break; |
| 302 | case DP_C_LLONG: |
| 303 | value = va_arg(args, LLONG); |
| 304 | break; |
| 305 | default: |
| 306 | value = va_arg(args, int); |
| 307 | break; |
| 308 | } |
| 309 | fmtint(sbuffer, buffer, &currlen, maxlen, |
| 310 | value, 10, min, max, flags); |
| 311 | break; |
| 312 | case 'X': |
| 313 | flags |= DP_F_UP; |
| 314 | /* FALLTHROUGH */ |
| 315 | case 'x': |
| 316 | case 'o': |
| 317 | case 'u': |
| 318 | flags |= DP_F_UNSIGNED; |
| 319 | switch (cflags) { |
| 320 | case DP_C_SHORT: |
| 321 | value = (unsigned short int)va_arg(args, unsigned int); |
| 322 | break; |
| 323 | case DP_C_LONG: |
| 324 | value = (LLONG) va_arg(args, |
| 325 | unsigned long int); |
| 326 | break; |
| 327 | case DP_C_LLONG: |
| 328 | value = va_arg(args, unsigned LLONG); |
| 329 | break; |
| 330 | default: |
| 331 | value = (LLONG) va_arg(args, |
| 332 | unsigned int); |
| 333 | break; |
| 334 | } |
| 335 | fmtint(sbuffer, buffer, &currlen, maxlen, value, |
| 336 | ch == 'o' ? 8 : (ch == 'u' ? 10 : 16), |
| 337 | min, max, flags); |
| 338 | break; |
| 339 | case 'f': |
| 340 | if (cflags == DP_C_LDOUBLE) |
| 341 | fvalue = va_arg(args, LDOUBLE); |
| 342 | else |
| 343 | fvalue = va_arg(args, double); |
| 344 | fmtfp(sbuffer, buffer, &currlen, maxlen, |
| 345 | fvalue, min, max, flags); |
| 346 | break; |
| 347 | case 'E': |
| 348 | flags |= DP_F_UP; |
| 349 | case 'e': |
| 350 | if (cflags == DP_C_LDOUBLE) |
| 351 | fvalue = va_arg(args, LDOUBLE); |
| 352 | else |
| 353 | fvalue = va_arg(args, double); |
| 354 | break; |
| 355 | case 'G': |
| 356 | flags |= DP_F_UP; |
| 357 | case 'g': |
| 358 | if (cflags == DP_C_LDOUBLE) |
| 359 | fvalue = va_arg(args, LDOUBLE); |
| 360 | else |
| 361 | fvalue = va_arg(args, double); |
| 362 | break; |
| 363 | case 'c': |
| 364 | doapr_outch(sbuffer, buffer, &currlen, maxlen, |
| 365 | va_arg(args, int)); |
| 366 | break; |
| 367 | case 's': |
| 368 | strvalue = va_arg(args, char *); |
| 369 | if (max < 0) { |
| 370 | if (buffer) |
| 371 | max = INT_MAX; |
| 372 | else |
| 373 | max = *maxlen; |
| 374 | } |
| 375 | fmtstr(sbuffer, buffer, &currlen, maxlen, strvalue, |
| 376 | flags, min, max); |
| 377 | break; |
| 378 | case 'p': |
| 379 | value = (long)va_arg(args, void *); |
| 380 | fmtint(sbuffer, buffer, &currlen, maxlen, |
| 381 | value, 16, min, max, flags|DP_F_NUM); |
| 382 | break; |
| 383 | case 'n': /* XXX */ |
| 384 | if (cflags == DP_C_SHORT) { |
| 385 | short int *num; |
| 386 | num = va_arg(args, short int *); |
| 387 | *num = currlen; |
| 388 | } else if (cflags == DP_C_LONG) { /* XXX */ |
| 389 | long int *num; |
| 390 | num = va_arg(args, long int *); |
| 391 | *num = (long int) currlen; |
| 392 | } else if (cflags == DP_C_LLONG) { /* XXX */ |
| 393 | LLONG *num; |
| 394 | num = va_arg(args, LLONG *); |
| 395 | *num = (LLONG) currlen; |
| 396 | } else { |
| 397 | int *num; |
| 398 | num = va_arg(args, int *); |
| 399 | *num = currlen; |
| 400 | } |
| 401 | break; |
| 402 | case '%': |
| 403 | doapr_outch(sbuffer, buffer, &currlen, maxlen, ch); |
| 404 | break; |
| 405 | case 'w': |
| 406 | /* not supported yet, treat as next char */ |
| 407 | ch = *format++; |
| 408 | break; |
| 409 | default: |
| 410 | /* unknown, skip */ |
| 411 | break; |
| 412 | } |
| 413 | ch = *format++; |
| 414 | state = DP_S_DEFAULT; |
| 415 | flags = cflags = min = 0; |
| 416 | max = -1; |
| 417 | break; |
| 418 | case DP_S_DONE: |
| 419 | break; |
| 420 | default: |
| 421 | break; |
| 422 | } |
| 423 | } |
| 424 | *truncated = (currlen > *maxlen - 1); |
| 425 | if (*truncated) |
| 426 | currlen = *maxlen - 1; |
| 427 | doapr_outch(sbuffer, buffer, &currlen, maxlen, '\0'); |
| 428 | *retlen = currlen - 1; |
| 429 | return; |
| 430 | } |
| 431 | |
| 432 | static void |
| 433 | fmtstr( |
| 434 | char **sbuffer, |
| 435 | char **buffer, |
| 436 | size_t *currlen, |
| 437 | size_t *maxlen, |
| 438 | const char *value, |
| 439 | int flags, |
| 440 | int min, |
| 441 | int max) |
| 442 | { |
| 443 | int padlen, strln; |
| 444 | int cnt = 0; |
| 445 | |
| 446 | if (value == 0) |
| 447 | value = "<NULL>"; |
| 448 | for (strln = 0; value[strln]; ++strln) |
| 449 | ; |
| 450 | padlen = min - strln; |
| 451 | if (padlen < 0) |
| 452 | padlen = 0; |
| 453 | if (flags & DP_F_MINUS) |
| 454 | padlen = -padlen; |
| 455 | |
| 456 | while ((padlen > 0) && (cnt < max)) { |
| 457 | doapr_outch(sbuffer, buffer, currlen, maxlen, ' '); |
| 458 | --padlen; |
| 459 | ++cnt; |
| 460 | } |
| 461 | while (*value && (cnt < max)) { |
| 462 | doapr_outch(sbuffer, buffer, currlen, maxlen, *value++); |
| 463 | ++cnt; |
| 464 | } |
| 465 | while ((padlen < 0) && (cnt < max)) { |
| 466 | doapr_outch(sbuffer, buffer, currlen, maxlen, ' '); |
| 467 | ++padlen; |
| 468 | ++cnt; |
| 469 | } |
| 470 | } |
| 471 | |
| 472 | static void |
| 473 | fmtint( |
| 474 | char **sbuffer, |
| 475 | char **buffer, |
| 476 | size_t *currlen, |
| 477 | size_t *maxlen, |
| 478 | LLONG value, |
| 479 | int base, |
| 480 | int min, |
| 481 | int max, |
| 482 | int flags) |
| 483 | { |
| 484 | int signvalue = 0; |
| 485 | const char *prefix = ""; |
| 486 | unsigned LLONG uvalue; |
| 487 | char convert[DECIMAL_SIZE(value)+3]; |
| 488 | int place = 0; |
| 489 | int spadlen = 0; |
| 490 | int zpadlen = 0; |
| 491 | int caps = 0; |
| 492 | |
| 493 | if (max < 0) |
| 494 | max = 0; |
| 495 | uvalue = value; |
| 496 | if (!(flags & DP_F_UNSIGNED)) { |
| 497 | if (value < 0) { |
| 498 | signvalue = '-'; |
| 499 | uvalue = -value; |
| 500 | } else if (flags & DP_F_PLUS) |
| 501 | signvalue = '+'; |
| 502 | else if (flags & DP_F_SPACE) |
| 503 | signvalue = ' '; |
| 504 | } |
| 505 | if (flags & DP_F_NUM) { |
| 506 | if (base == 8) prefix = "0"; |
| 507 | if (base == 16) prefix = "0x"; |
| 508 | } |
| 509 | if (flags & DP_F_UP) |
| 510 | caps = 1; |
| 511 | do { |
| 512 | convert[place++] = |
| 513 | (caps ? "0123456789ABCDEF" : "0123456789abcdef") |
| 514 | [uvalue % (unsigned) base]; |
| 515 | uvalue = (uvalue / (unsigned) base); |
| 516 | } while (uvalue && (place < (int)sizeof(convert))); |
| 517 | if (place == sizeof(convert)) |
| 518 | place--; |
| 519 | convert[place] = 0; |
| 520 | |
| 521 | zpadlen = max - place; |
| 522 | spadlen = min - OSSL_MAX(max, place) - (signvalue ? 1 : 0) - strlen(prefix); |
| 523 | if (zpadlen < 0) |
| 524 | zpadlen = 0; |
| 525 | if (spadlen < 0) |
| 526 | spadlen = 0; |
| 527 | if (flags & DP_F_ZERO) { |
| 528 | zpadlen = OSSL_MAX(zpadlen, spadlen); |
| 529 | spadlen = 0; |
| 530 | } |
| 531 | if (flags & DP_F_MINUS) |
| 532 | spadlen = -spadlen; |
| 533 | |
| 534 | /* spaces */ |
| 535 | while (spadlen > 0) { |
| 536 | doapr_outch(sbuffer, buffer, currlen, maxlen, ' '); |
| 537 | --spadlen; |
| 538 | } |
| 539 | |
| 540 | /* sign */ |
| 541 | if (signvalue) |
| 542 | doapr_outch(sbuffer, buffer, currlen, maxlen, signvalue); |
| 543 | |
| 544 | /* prefix */ |
| 545 | while (*prefix) { |
| 546 | doapr_outch(sbuffer, buffer, currlen, maxlen, *prefix); |
| 547 | prefix++; |
| 548 | } |
| 549 | |
| 550 | /* zeros */ |
| 551 | if (zpadlen > 0) { |
| 552 | while (zpadlen > 0) { |
| 553 | doapr_outch(sbuffer, buffer, currlen, maxlen, '0'); |
| 554 | --zpadlen; |
| 555 | } |
| 556 | } |
| 557 | /* digits */ |
| 558 | while (place > 0) |
| 559 | doapr_outch(sbuffer, buffer, currlen, maxlen, convert[--place]); |
| 560 | |
| 561 | /* left justified spaces */ |
| 562 | while (spadlen < 0) { |
| 563 | doapr_outch(sbuffer, buffer, currlen, maxlen, ' '); |
| 564 | ++spadlen; |
| 565 | } |
| 566 | return; |
| 567 | } |
| 568 | |
| 569 | static LDOUBLE |
| 570 | abs_val(LDOUBLE value) |
| 571 | { |
| 572 | LDOUBLE result = value; |
| 573 | if (value < 0) |
| 574 | result = -value; |
| 575 | return result; |
| 576 | } |
| 577 | |
| 578 | static LDOUBLE |
| 579 | pow_10(int in_exp) |
| 580 | { |
| 581 | LDOUBLE result = 1; |
| 582 | while (in_exp) { |
| 583 | result *= 10; |
| 584 | in_exp--; |
| 585 | } |
| 586 | return result; |
| 587 | } |
| 588 | |
| 589 | static long |
| 590 | roundv(LDOUBLE value) |
| 591 | { |
| 592 | long intpart; |
| 593 | intpart = (long) value; |
| 594 | value = value - intpart; |
| 595 | if (value >= 0.5) |
| 596 | intpart++; |
| 597 | return intpart; |
| 598 | } |
| 599 | |
| 600 | static void |
| 601 | fmtfp( |
| 602 | char **sbuffer, |
| 603 | char **buffer, |
| 604 | size_t *currlen, |
| 605 | size_t *maxlen, |
| 606 | LDOUBLE fvalue, |
| 607 | int min, |
| 608 | int max, |
| 609 | int flags) |
| 610 | { |
| 611 | int signvalue = 0; |
| 612 | LDOUBLE ufvalue; |
| 613 | char iconvert[20]; |
| 614 | char fconvert[20]; |
| 615 | int iplace = 0; |
| 616 | int fplace = 0; |
| 617 | int padlen = 0; |
| 618 | int zpadlen = 0; |
| 619 | int caps = 0; |
| 620 | long intpart; |
| 621 | long fracpart; |
| 622 | long max10; |
| 623 | |
| 624 | if (max < 0) |
| 625 | max = 6; |
| 626 | ufvalue = abs_val(fvalue); |
| 627 | if (fvalue < 0) |
| 628 | signvalue = '-'; |
| 629 | else if (flags & DP_F_PLUS) |
| 630 | signvalue = '+'; |
| 631 | else if (flags & DP_F_SPACE) |
| 632 | signvalue = ' '; |
| 633 | |
| 634 | intpart = (long)ufvalue; |
| 635 | |
| 636 | /* sorry, we only support 9 digits past the decimal because of our |
| 637 | conversion method */ |
| 638 | if (max > 9) |
| 639 | max = 9; |
| 640 | |
| 641 | /* we "cheat" by converting the fractional part to integer by |
| 642 | multiplying by a factor of 10 */ |
| 643 | max10 = roundv(pow_10(max)); |
| 644 | fracpart = roundv(pow_10(max) * (ufvalue - intpart)); |
| 645 | |
| 646 | if (fracpart >= max10) { |
| 647 | intpart++; |
| 648 | fracpart -= max10; |
| 649 | } |
| 650 | |
| 651 | /* convert integer part */ |
| 652 | do { |
| 653 | iconvert[iplace++] = |
| 654 | (caps ? "0123456789ABCDEF" |
| 655 | : "0123456789abcdef")[intpart % 10]; |
| 656 | intpart = (intpart / 10); |
| 657 | } while (intpart && (iplace < (int)sizeof(iconvert))); |
| 658 | if (iplace == sizeof iconvert) |
| 659 | iplace--; |
| 660 | iconvert[iplace] = 0; |
| 661 | |
| 662 | /* convert fractional part */ |
| 663 | do { |
| 664 | fconvert[fplace++] = |
| 665 | (caps ? "0123456789ABCDEF" |
| 666 | : "0123456789abcdef")[fracpart % 10]; |
| 667 | fracpart = (fracpart / 10); |
| 668 | } while (fplace < max); |
| 669 | if (fplace == sizeof fconvert) |
| 670 | fplace--; |
| 671 | fconvert[fplace] = 0; |
| 672 | |
| 673 | /* -1 for decimal point, another -1 if we are printing a sign */ |
| 674 | padlen = min - iplace - max - 1 - ((signvalue) ? 1 : 0); |
| 675 | zpadlen = max - fplace; |
| 676 | if (zpadlen < 0) |
| 677 | zpadlen = 0; |
| 678 | if (padlen < 0) |
| 679 | padlen = 0; |
| 680 | if (flags & DP_F_MINUS) |
| 681 | padlen = -padlen; |
| 682 | |
| 683 | if ((flags & DP_F_ZERO) && (padlen > 0)) { |
| 684 | if (signvalue) { |
| 685 | doapr_outch(sbuffer, buffer, currlen, maxlen, signvalue); |
| 686 | --padlen; |
| 687 | signvalue = 0; |
| 688 | } |
| 689 | while (padlen > 0) { |
| 690 | doapr_outch(sbuffer, buffer, currlen, maxlen, '0'); |
| 691 | --padlen; |
| 692 | } |
| 693 | } |
| 694 | while (padlen > 0) { |
| 695 | doapr_outch(sbuffer, buffer, currlen, maxlen, ' '); |
| 696 | --padlen; |
| 697 | } |
| 698 | if (signvalue) |
| 699 | doapr_outch(sbuffer, buffer, currlen, maxlen, signvalue); |
| 700 | |
| 701 | while (iplace > 0) |
| 702 | doapr_outch(sbuffer, buffer, currlen, maxlen, iconvert[--iplace]); |
| 703 | |
| 704 | /* |
| 705 | * Decimal point. This should probably use locale to find the correct |
| 706 | * char to print out. |
| 707 | */ |
| 708 | if (max > 0 || (flags & DP_F_NUM)) { |
| 709 | doapr_outch(sbuffer, buffer, currlen, maxlen, '.'); |
| 710 | |
| 711 | while (fplace > 0) |
| 712 | doapr_outch(sbuffer, buffer, currlen, maxlen, fconvert[--fplace]); |
| 713 | } |
| 714 | while (zpadlen > 0) { |
| 715 | doapr_outch(sbuffer, buffer, currlen, maxlen, '0'); |
| 716 | --zpadlen; |
| 717 | } |
| 718 | |
| 719 | while (padlen < 0) { |
| 720 | doapr_outch(sbuffer, buffer, currlen, maxlen, ' '); |
| 721 | ++padlen; |
| 722 | } |
| 723 | } |
| 724 | |
| 725 | static void |
| 726 | doapr_outch( |
| 727 | char **sbuffer, |
| 728 | char **buffer, |
| 729 | size_t *currlen, |
| 730 | size_t *maxlen, |
| 731 | int c) |
| 732 | { |
| 733 | /* If we haven't at least one buffer, someone has doe a big booboo */ |
| 734 | assert(*sbuffer != NULL || buffer != NULL); |
| 735 | |
| 736 | if (buffer) { |
| 737 | while (*currlen >= *maxlen) { |
| 738 | if (*buffer == NULL) { |
| 739 | if (*maxlen == 0) |
| 740 | *maxlen = 1024; |
| 741 | *buffer = OPENSSL_malloc(*maxlen); |
| 742 | if (*currlen > 0) { |
| 743 | assert(*sbuffer != NULL); |
| 744 | memcpy(*buffer, *sbuffer, *currlen); |
| 745 | } |
| 746 | *sbuffer = NULL; |
| 747 | } else { |
| 748 | *maxlen += 1024; |
| 749 | *buffer = OPENSSL_realloc(*buffer, *maxlen); |
| 750 | } |
| 751 | } |
| 752 | /* What to do if *buffer is NULL? */ |
| 753 | assert(*sbuffer != NULL || *buffer != NULL); |
| 754 | } |
| 755 | |
| 756 | if (*currlen < *maxlen) { |
| 757 | if (*sbuffer) |
| 758 | (*sbuffer)[(*currlen)++] = (char)c; |
| 759 | else |
| 760 | (*buffer)[(*currlen)++] = (char)c; |
| 761 | } |
| 762 | |
| 763 | return; |
| 764 | } |
| 765 | |
| 766 | /***************************************************************************/ |
| 767 | |
| 768 | int BIO_printf (BIO *bio, const char *format, ...) |
| 769 | { |
| 770 | va_list args; |
| 771 | int ret; |
| 772 | |
| 773 | va_start(args, format); |
| 774 | |
| 775 | ret = BIO_vprintf(bio, format, args); |
| 776 | |
| 777 | va_end(args); |
| 778 | return(ret); |
| 779 | } |
| 780 | |
| 781 | int BIO_vprintf (BIO *bio, const char *format, va_list args) |
| 782 | { |
| 783 | int ret; |
| 784 | size_t retlen; |
| 785 | char hugebuf[1024*2]; /* Was previously 10k, which is unreasonable |
| 786 | in small-stack environments, like threads |
| 787 | or DOS programs. */ |
| 788 | char *hugebufp = hugebuf; |
| 789 | size_t hugebufsize = sizeof(hugebuf); |
| 790 | char *dynbuf = NULL; |
| 791 | int ignored; |
| 792 | |
| 793 | dynbuf = NULL; |
| 794 | CRYPTO_push_info("doapr()"); |
| 795 | _dopr(&hugebufp, &dynbuf, &hugebufsize, |
| 796 | &retlen, &ignored, format, args); |
| 797 | if (dynbuf) |
| 798 | { |
| 799 | ret=BIO_write(bio, dynbuf, (int)retlen); |
| 800 | OPENSSL_free(dynbuf); |
| 801 | } |
| 802 | else |
| 803 | { |
| 804 | ret=BIO_write(bio, hugebuf, (int)retlen); |
| 805 | } |
| 806 | CRYPTO_pop_info(); |
| 807 | return(ret); |
| 808 | } |
| 809 | |
| 810 | /* As snprintf is not available everywhere, we provide our own implementation. |
| 811 | * This function has nothing to do with BIOs, but it's closely related |
| 812 | * to BIO_printf, and we need *some* name prefix ... |
| 813 | * (XXX the function should be renamed, but to what?) */ |
| 814 | int BIO_snprintf(char *buf, size_t n, const char *format, ...) |
| 815 | { |
| 816 | va_list args; |
| 817 | int ret; |
| 818 | |
| 819 | va_start(args, format); |
| 820 | |
| 821 | ret = BIO_vsnprintf(buf, n, format, args); |
| 822 | |
| 823 | va_end(args); |
| 824 | return(ret); |
| 825 | } |
| 826 | |
| 827 | int BIO_vsnprintf(char *buf, size_t n, const char *format, va_list args) |
| 828 | { |
| 829 | size_t retlen; |
| 830 | int truncated; |
| 831 | |
| 832 | _dopr(&buf, NULL, &n, &retlen, &truncated, format, args); |
| 833 | |
| 834 | if (truncated) |
| 835 | /* In case of truncation, return -1 like traditional snprintf. |
| 836 | * (Current drafts for ISO/IEC 9899 say snprintf should return |
| 837 | * the number of characters that would have been written, |
| 838 | * had the buffer been large enough.) */ |
| 839 | return -1; |
| 840 | else |
| 841 | return (retlen <= INT_MAX) ? (int)retlen : -1; |
| 842 | } |