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Commit | Line | Data |
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0f113f3e | 1 | /* |
da1c088f | 2 | * Copyright 1995-2023 The OpenSSL Project Authors. All Rights Reserved. |
b1322259 | 3 | * |
09abbca1 | 4 | * Licensed under the Apache License 2.0 (the "License"). You may not use |
b1322259 RS |
5 | * this file except in compliance with the License. You can obtain a copy |
6 | * in the file LICENSE in the source distribution or at | |
7 | * https://www.openssl.org/source/license.html | |
d02b48c6 RE |
8 | */ |
9 | ||
10 | #include <stdio.h> | |
b478e91f | 11 | #include <string.h> |
3a63c0ed | 12 | #include "internal/cryptlib.h" |
25f2138b | 13 | #include "crypto/ctype.h" |
230c691a | 14 | #include "internal/numbers.h" |
ec577822 | 15 | #include <openssl/bio.h> |
f59d72f0 | 16 | #include <openssl/configuration.h> |
d02b48c6 | 17 | |
9fd4ee5d UM |
18 | /* |
19 | * Copyright Patrick Powell 1995 | |
b478e91f | 20 | * This code is based on code written by Patrick Powell <papowell@astart.com> |
9fd4ee5d | 21 | * It may be used for any purpose as long as this notice remains intact |
b478e91f | 22 | * on all source code distributions. |
9fd4ee5d UM |
23 | */ |
24 | ||
ba8fb521 | 25 | #ifdef HAVE_LONG_DOUBLE |
0f113f3e | 26 | # define LDOUBLE long double |
b478e91f | 27 | #else |
0f113f3e | 28 | # define LDOUBLE double |
b478e91f UM |
29 | #endif |
30 | ||
9cb17730 MC |
31 | static int fmtstr(char **, char **, size_t *, size_t *, |
32 | const char *, int, int, int); | |
33 | static int fmtint(char **, char **, size_t *, size_t *, | |
15b337fa | 34 | int64_t, int, int, int, int); |
f59d72f0 | 35 | #ifndef OPENSSL_SYS_UEFI |
9cb17730 | 36 | static int fmtfp(char **, char **, size_t *, size_t *, |
d6056f08 | 37 | LDOUBLE, int, int, int, int); |
f59d72f0 | 38 | #endif |
9cb17730 MC |
39 | static int doapr_outch(char **, char **, size_t *, size_t *, int); |
40 | static int _dopr(char **sbuffer, char **buffer, | |
41 | size_t *maxlen, size_t *retlen, int *truncated, | |
42 | const char *format, va_list args); | |
b478e91f | 43 | |
9fd4ee5d | 44 | /* format read states */ |
b478e91f UM |
45 | #define DP_S_DEFAULT 0 |
46 | #define DP_S_FLAGS 1 | |
47 | #define DP_S_MIN 2 | |
48 | #define DP_S_DOT 3 | |
49 | #define DP_S_MAX 4 | |
50 | #define DP_S_MOD 5 | |
51 | #define DP_S_CONV 6 | |
52 | #define DP_S_DONE 7 | |
9fd4ee5d UM |
53 | |
54 | /* format flags - Bits */ | |
242073bd | 55 | /* left-aligned padding */ |
b478e91f | 56 | #define DP_F_MINUS (1 << 0) |
242073bd | 57 | /* print an explicit '+' for a value with positive sign */ |
b478e91f | 58 | #define DP_F_PLUS (1 << 1) |
242073bd | 59 | /* print an explicit ' ' for a value with positive sign */ |
b478e91f | 60 | #define DP_F_SPACE (1 << 2) |
242073bd | 61 | /* print 0/0x prefix for octal/hex and decimal point for floating point */ |
b478e91f | 62 | #define DP_F_NUM (1 << 3) |
242073bd | 63 | /* print leading zeroes */ |
b478e91f | 64 | #define DP_F_ZERO (1 << 4) |
242073bd | 65 | /* print HEX in UPPPERcase */ |
b478e91f | 66 | #define DP_F_UP (1 << 5) |
242073bd | 67 | /* treat value as unsigned */ |
b478e91f UM |
68 | #define DP_F_UNSIGNED (1 << 6) |
69 | ||
70 | /* conversion flags */ | |
71 | #define DP_C_SHORT 1 | |
72 | #define DP_C_LONG 2 | |
73 | #define DP_C_LDOUBLE 3 | |
74 | #define DP_C_LLONG 4 | |
1e53a9fd | 75 | #define DP_C_SIZE 5 |
b478e91f | 76 | |
d6056f08 MC |
77 | /* Floating point formats */ |
78 | #define F_FORMAT 0 | |
79 | #define E_FORMAT 1 | |
80 | #define G_FORMAT 2 | |
81 | ||
b478e91f | 82 | /* some handy macros */ |
9fd4ee5d | 83 | #define char_to_int(p) (p - '0') |
99b1aaf2 | 84 | #define OSSL_MAX(p,q) ((p >= q) ? p : q) |
9fd4ee5d | 85 | |
9cb17730 | 86 | static int |
0f113f3e MC |
87 | _dopr(char **sbuffer, |
88 | char **buffer, | |
89 | size_t *maxlen, | |
90 | size_t *retlen, int *truncated, const char *format, va_list args) | |
9fd4ee5d | 91 | { |
b478e91f | 92 | char ch; |
15b337fa | 93 | int64_t value; |
f59d72f0 | 94 | #ifndef OPENSSL_SYS_UEFI |
b478e91f | 95 | LDOUBLE fvalue; |
f59d72f0 | 96 | #endif |
b478e91f UM |
97 | char *strvalue; |
98 | int min; | |
99 | int max; | |
100 | int state; | |
101 | int flags; | |
102 | int cflags; | |
103 | size_t currlen; | |
104 | ||
105 | state = DP_S_DEFAULT; | |
106 | flags = currlen = cflags = min = 0; | |
107 | max = -1; | |
108 | ch = *format++; | |
109 | ||
110 | while (state != DP_S_DONE) { | |
827dbcb1 | 111 | if (ch == '\0' || (buffer == NULL && currlen >= *maxlen)) |
b478e91f UM |
112 | state = DP_S_DONE; |
113 | ||
114 | switch (state) { | |
115 | case DP_S_DEFAULT: | |
116 | if (ch == '%') | |
117 | state = DP_S_FLAGS; | |
118 | else | |
f479eab2 | 119 | if (!doapr_outch(sbuffer, buffer, &currlen, maxlen, ch)) |
9cb17730 | 120 | return 0; |
b478e91f UM |
121 | ch = *format++; |
122 | break; | |
123 | case DP_S_FLAGS: | |
124 | switch (ch) { | |
125 | case '-': | |
126 | flags |= DP_F_MINUS; | |
127 | ch = *format++; | |
128 | break; | |
129 | case '+': | |
130 | flags |= DP_F_PLUS; | |
131 | ch = *format++; | |
132 | break; | |
133 | case ' ': | |
134 | flags |= DP_F_SPACE; | |
135 | ch = *format++; | |
136 | break; | |
137 | case '#': | |
138 | flags |= DP_F_NUM; | |
139 | ch = *format++; | |
140 | break; | |
141 | case '0': | |
142 | flags |= DP_F_ZERO; | |
143 | ch = *format++; | |
144 | break; | |
145 | default: | |
146 | state = DP_S_MIN; | |
147 | break; | |
148 | } | |
149 | break; | |
150 | case DP_S_MIN: | |
a1df06b3 | 151 | if (ossl_isdigit(ch)) { |
b478e91f UM |
152 | min = 10 * min + char_to_int(ch); |
153 | ch = *format++; | |
154 | } else if (ch == '*') { | |
155 | min = va_arg(args, int); | |
156 | ch = *format++; | |
157 | state = DP_S_DOT; | |
158 | } else | |
159 | state = DP_S_DOT; | |
160 | break; | |
161 | case DP_S_DOT: | |
162 | if (ch == '.') { | |
163 | state = DP_S_MAX; | |
164 | ch = *format++; | |
165 | } else | |
166 | state = DP_S_MOD; | |
167 | break; | |
168 | case DP_S_MAX: | |
a1df06b3 | 169 | if (ossl_isdigit(ch)) { |
b478e91f UM |
170 | if (max < 0) |
171 | max = 0; | |
172 | max = 10 * max + char_to_int(ch); | |
173 | ch = *format++; | |
174 | } else if (ch == '*') { | |
175 | max = va_arg(args, int); | |
176 | ch = *format++; | |
177 | state = DP_S_MOD; | |
178 | } else | |
179 | state = DP_S_MOD; | |
180 | break; | |
181 | case DP_S_MOD: | |
182 | switch (ch) { | |
183 | case 'h': | |
184 | cflags = DP_C_SHORT; | |
185 | ch = *format++; | |
186 | break; | |
187 | case 'l': | |
188 | if (*format == 'l') { | |
189 | cflags = DP_C_LLONG; | |
190 | format++; | |
191 | } else | |
192 | cflags = DP_C_LONG; | |
193 | ch = *format++; | |
194 | break; | |
195 | case 'q': | |
74d9519a | 196 | case 'j': |
b478e91f UM |
197 | cflags = DP_C_LLONG; |
198 | ch = *format++; | |
199 | break; | |
200 | case 'L': | |
201 | cflags = DP_C_LDOUBLE; | |
202 | ch = *format++; | |
203 | break; | |
1e53a9fd RL |
204 | case 'z': |
205 | cflags = DP_C_SIZE; | |
206 | ch = *format++; | |
207 | break; | |
b478e91f UM |
208 | default: |
209 | break; | |
210 | } | |
211 | state = DP_S_CONV; | |
212 | break; | |
213 | case DP_S_CONV: | |
214 | switch (ch) { | |
215 | case 'd': | |
216 | case 'i': | |
217 | switch (cflags) { | |
218 | case DP_C_SHORT: | |
1b7aee1d | 219 | value = (short int)va_arg(args, int); |
b478e91f UM |
220 | break; |
221 | case DP_C_LONG: | |
222 | value = va_arg(args, long int); | |
223 | break; | |
224 | case DP_C_LLONG: | |
15b337fa | 225 | value = va_arg(args, int64_t); |
b478e91f | 226 | break; |
1e53a9fd RL |
227 | case DP_C_SIZE: |
228 | value = va_arg(args, ossl_ssize_t); | |
229 | break; | |
b478e91f UM |
230 | default: |
231 | value = va_arg(args, int); | |
232 | break; | |
233 | } | |
9cb17730 MC |
234 | if (!fmtint(sbuffer, buffer, &currlen, maxlen, value, 10, min, |
235 | max, flags)) | |
236 | return 0; | |
b478e91f UM |
237 | break; |
238 | case 'X': | |
239 | flags |= DP_F_UP; | |
240 | /* FALLTHROUGH */ | |
241 | case 'x': | |
242 | case 'o': | |
243 | case 'u': | |
244 | flags |= DP_F_UNSIGNED; | |
245 | switch (cflags) { | |
246 | case DP_C_SHORT: | |
42a9af38 | 247 | value = (unsigned short int)va_arg(args, unsigned int); |
b478e91f UM |
248 | break; |
249 | case DP_C_LONG: | |
15b337fa | 250 | value = va_arg(args, unsigned long int); |
b478e91f UM |
251 | break; |
252 | case DP_C_LLONG: | |
15b337fa | 253 | value = va_arg(args, uint64_t); |
b478e91f | 254 | break; |
1e53a9fd | 255 | case DP_C_SIZE: |
c1417821 | 256 | value = va_arg(args, size_t); |
1e53a9fd | 257 | break; |
b478e91f | 258 | default: |
15b337fa | 259 | value = va_arg(args, unsigned int); |
b478e91f UM |
260 | break; |
261 | } | |
9cb17730 MC |
262 | if (!fmtint(sbuffer, buffer, &currlen, maxlen, value, |
263 | ch == 'o' ? 8 : (ch == 'u' ? 10 : 16), | |
264 | min, max, flags)) | |
265 | return 0; | |
b478e91f | 266 | break; |
f59d72f0 | 267 | #ifndef OPENSSL_SYS_UEFI |
b478e91f UM |
268 | case 'f': |
269 | if (cflags == DP_C_LDOUBLE) | |
270 | fvalue = va_arg(args, LDOUBLE); | |
271 | else | |
272 | fvalue = va_arg(args, double); | |
9cb17730 | 273 | if (!fmtfp(sbuffer, buffer, &currlen, maxlen, fvalue, min, max, |
d6056f08 | 274 | flags, F_FORMAT)) |
9cb17730 | 275 | return 0; |
b478e91f UM |
276 | break; |
277 | case 'E': | |
278 | flags |= DP_F_UP; | |
1567a821 | 279 | /* fall through */ |
b478e91f UM |
280 | case 'e': |
281 | if (cflags == DP_C_LDOUBLE) | |
282 | fvalue = va_arg(args, LDOUBLE); | |
283 | else | |
284 | fvalue = va_arg(args, double); | |
242073bd | 285 | if (!fmtfp(sbuffer, buffer, &currlen, maxlen, fvalue, min, max, |
d6056f08 | 286 | flags, E_FORMAT)) |
242073bd | 287 | return 0; |
b478e91f UM |
288 | break; |
289 | case 'G': | |
290 | flags |= DP_F_UP; | |
1567a821 | 291 | /* fall through */ |
b478e91f UM |
292 | case 'g': |
293 | if (cflags == DP_C_LDOUBLE) | |
294 | fvalue = va_arg(args, LDOUBLE); | |
295 | else | |
296 | fvalue = va_arg(args, double); | |
242073bd | 297 | if (!fmtfp(sbuffer, buffer, &currlen, maxlen, fvalue, min, max, |
d6056f08 | 298 | flags, G_FORMAT)) |
242073bd | 299 | return 0; |
b478e91f | 300 | break; |
f59d72f0 GH |
301 | #else |
302 | case 'f': | |
303 | case 'E': | |
304 | case 'e': | |
305 | case 'G': | |
306 | case 'g': | |
307 | /* not implemented for UEFI */ | |
308 | ERR_raise(ERR_LIB_BIO, ERR_R_UNSUPPORTED); | |
309 | return 0; | |
310 | #endif | |
b478e91f | 311 | case 'c': |
f479eab2 F |
312 | if (!doapr_outch(sbuffer, buffer, &currlen, maxlen, |
313 | va_arg(args, int))) | |
9cb17730 | 314 | return 0; |
b478e91f UM |
315 | break; |
316 | case 's': | |
317 | strvalue = va_arg(args, char *); | |
827dbcb1 | 318 | if (max < 0) { |
0f113f3e MC |
319 | if (buffer) |
320 | max = INT_MAX; | |
321 | else | |
322 | max = *maxlen; | |
323 | } | |
9cb17730 MC |
324 | if (!fmtstr(sbuffer, buffer, &currlen, maxlen, strvalue, |
325 | flags, min, max)) | |
326 | return 0; | |
b478e91f UM |
327 | break; |
328 | case 'p': | |
5f0580cc | 329 | value = (size_t)va_arg(args, void *); |
9cb17730 MC |
330 | if (!fmtint(sbuffer, buffer, &currlen, maxlen, |
331 | value, 16, min, max, flags | DP_F_NUM)) | |
332 | return 0; | |
b478e91f | 333 | break; |
15b337fa AP |
334 | case 'n': |
335 | { | |
0f113f3e | 336 | int *num; |
b478e91f UM |
337 | num = va_arg(args, int *); |
338 | *num = currlen; | |
339 | } | |
340 | break; | |
341 | case '%': | |
f479eab2 | 342 | if (!doapr_outch(sbuffer, buffer, &currlen, maxlen, ch)) |
9cb17730 | 343 | return 0; |
b478e91f UM |
344 | break; |
345 | case 'w': | |
346 | /* not supported yet, treat as next char */ | |
7b424087 | 347 | format++; |
b478e91f UM |
348 | break; |
349 | default: | |
350 | /* unknown, skip */ | |
351 | break; | |
352 | } | |
353 | ch = *format++; | |
354 | state = DP_S_DEFAULT; | |
355 | flags = cflags = min = 0; | |
356 | max = -1; | |
357 | break; | |
358 | case DP_S_DONE: | |
359 | break; | |
360 | default: | |
361 | break; | |
9fd4ee5d | 362 | } |
9fd4ee5d | 363 | } |
416a5b6c MC |
364 | /* |
365 | * We have to truncate if there is no dynamic buffer and we have filled the | |
366 | * static buffer. | |
367 | */ | |
368 | if (buffer == NULL) { | |
369 | *truncated = (currlen > *maxlen - 1); | |
370 | if (*truncated) | |
371 | currlen = *maxlen - 1; | |
372 | } | |
f479eab2 | 373 | if (!doapr_outch(sbuffer, buffer, &currlen, maxlen, '\0')) |
9cb17730 | 374 | return 0; |
827dbcb1 | 375 | *retlen = currlen - 1; |
9cb17730 | 376 | return 1; |
9fd4ee5d UM |
377 | } |
378 | ||
9cb17730 | 379 | static int |
0f113f3e MC |
380 | fmtstr(char **sbuffer, |
381 | char **buffer, | |
382 | size_t *currlen, | |
383 | size_t *maxlen, const char *value, int flags, int min, int max) | |
9fd4ee5d | 384 | { |
9cb17730 MC |
385 | int padlen; |
386 | size_t strln; | |
b478e91f UM |
387 | int cnt = 0; |
388 | ||
389 | if (value == 0) | |
390 | value = "<NULL>"; | |
9cb17730 | 391 | |
230c691a | 392 | strln = OPENSSL_strnlen(value, max < 0 ? SIZE_MAX : (size_t)max); |
9cb17730 | 393 | |
b478e91f | 394 | padlen = min - strln; |
9cb17730 | 395 | if (min < 0 || padlen < 0) |
b478e91f | 396 | padlen = 0; |
453fc7a0 RL |
397 | if (max >= 0) { |
398 | /* | |
399 | * Calculate the maximum output including padding. | |
400 | * Make sure max doesn't overflow into negativity | |
401 | */ | |
402 | if (max < INT_MAX - padlen) | |
403 | max += padlen; | |
404 | else | |
405 | max = INT_MAX; | |
406 | } | |
b478e91f UM |
407 | if (flags & DP_F_MINUS) |
408 | padlen = -padlen; | |
409 | ||
230c691a | 410 | while ((padlen > 0) && (max < 0 || cnt < max)) { |
f479eab2 | 411 | if (!doapr_outch(sbuffer, buffer, currlen, maxlen, ' ')) |
9cb17730 | 412 | return 0; |
b478e91f UM |
413 | --padlen; |
414 | ++cnt; | |
415 | } | |
230c691a | 416 | while (strln > 0 && (max < 0 || cnt < max)) { |
f479eab2 | 417 | if (!doapr_outch(sbuffer, buffer, currlen, maxlen, *value++)) |
9cb17730 | 418 | return 0; |
230c691a | 419 | --strln; |
b478e91f UM |
420 | ++cnt; |
421 | } | |
230c691a | 422 | while ((padlen < 0) && (max < 0 || cnt < max)) { |
f479eab2 | 423 | if (!doapr_outch(sbuffer, buffer, currlen, maxlen, ' ')) |
9cb17730 | 424 | return 0; |
b478e91f UM |
425 | ++padlen; |
426 | ++cnt; | |
427 | } | |
9cb17730 | 428 | return 1; |
9fd4ee5d UM |
429 | } |
430 | ||
9cb17730 | 431 | static int |
0f113f3e MC |
432 | fmtint(char **sbuffer, |
433 | char **buffer, | |
434 | size_t *currlen, | |
15b337fa | 435 | size_t *maxlen, int64_t value, int base, int min, int max, int flags) |
9fd4ee5d | 436 | { |
b478e91f | 437 | int signvalue = 0; |
70f34a58 | 438 | const char *prefix = ""; |
15b337fa | 439 | uint64_t uvalue; |
0f113f3e | 440 | char convert[DECIMAL_SIZE(value) + 3]; |
b478e91f UM |
441 | int place = 0; |
442 | int spadlen = 0; | |
443 | int zpadlen = 0; | |
444 | int caps = 0; | |
445 | ||
446 | if (max < 0) | |
447 | max = 0; | |
448 | uvalue = value; | |
449 | if (!(flags & DP_F_UNSIGNED)) { | |
450 | if (value < 0) { | |
451 | signvalue = '-'; | |
15b337fa | 452 | uvalue = 0 - (uint64_t)value; |
b478e91f UM |
453 | } else if (flags & DP_F_PLUS) |
454 | signvalue = '+'; | |
455 | else if (flags & DP_F_SPACE) | |
456 | signvalue = ' '; | |
9fd4ee5d | 457 | } |
c433d725 | 458 | if (flags & DP_F_NUM) { |
0f113f3e MC |
459 | if (base == 8) |
460 | prefix = "0"; | |
461 | if (base == 16) | |
462 | prefix = "0x"; | |
c433d725 | 463 | } |
b478e91f UM |
464 | if (flags & DP_F_UP) |
465 | caps = 1; | |
466 | do { | |
0f113f3e MC |
467 | convert[place++] = (caps ? "0123456789ABCDEF" : "0123456789abcdef") |
468 | [uvalue % (unsigned)base]; | |
469 | uvalue = (uvalue / (unsigned)base); | |
8a66d178 GT |
470 | } while (uvalue && (place < (int)sizeof(convert))); |
471 | if (place == sizeof(convert)) | |
b478e91f UM |
472 | place--; |
473 | convert[place] = 0; | |
474 | ||
475 | zpadlen = max - place; | |
0f113f3e MC |
476 | spadlen = |
477 | min - OSSL_MAX(max, place) - (signvalue ? 1 : 0) - strlen(prefix); | |
b478e91f UM |
478 | if (zpadlen < 0) |
479 | zpadlen = 0; | |
480 | if (spadlen < 0) | |
481 | spadlen = 0; | |
482 | if (flags & DP_F_ZERO) { | |
99b1aaf2 | 483 | zpadlen = OSSL_MAX(zpadlen, spadlen); |
b478e91f | 484 | spadlen = 0; |
9fd4ee5d | 485 | } |
b478e91f UM |
486 | if (flags & DP_F_MINUS) |
487 | spadlen = -spadlen; | |
9fd4ee5d | 488 | |
b478e91f UM |
489 | /* spaces */ |
490 | while (spadlen > 0) { | |
f479eab2 | 491 | if (!doapr_outch(sbuffer, buffer, currlen, maxlen, ' ')) |
9cb17730 | 492 | return 0; |
b478e91f UM |
493 | --spadlen; |
494 | } | |
9fd4ee5d | 495 | |
b478e91f UM |
496 | /* sign */ |
497 | if (signvalue) | |
f479eab2 | 498 | if (!doapr_outch(sbuffer, buffer, currlen, maxlen, signvalue)) |
9cb17730 | 499 | return 0; |
9fd4ee5d | 500 | |
c433d725 RL |
501 | /* prefix */ |
502 | while (*prefix) { | |
f479eab2 | 503 | if (!doapr_outch(sbuffer, buffer, currlen, maxlen, *prefix)) |
9cb17730 | 504 | return 0; |
0f113f3e | 505 | prefix++; |
c433d725 RL |
506 | } |
507 | ||
b478e91f UM |
508 | /* zeros */ |
509 | if (zpadlen > 0) { | |
510 | while (zpadlen > 0) { | |
f479eab2 | 511 | if (!doapr_outch(sbuffer, buffer, currlen, maxlen, '0')) |
9cb17730 | 512 | return 0; |
b478e91f UM |
513 | --zpadlen; |
514 | } | |
515 | } | |
516 | /* digits */ | |
9cb17730 MC |
517 | while (place > 0) { |
518 | if (!doapr_outch(sbuffer, buffer, currlen, maxlen, convert[--place])) | |
519 | return 0; | |
520 | } | |
b478e91f UM |
521 | |
522 | /* left justified spaces */ | |
523 | while (spadlen < 0) { | |
9cb17730 MC |
524 | if (!doapr_outch(sbuffer, buffer, currlen, maxlen, ' ')) |
525 | return 0; | |
b478e91f UM |
526 | ++spadlen; |
527 | } | |
9cb17730 | 528 | return 1; |
9fd4ee5d UM |
529 | } |
530 | ||
f59d72f0 GH |
531 | #ifndef OPENSSL_SYS_UEFI |
532 | ||
0f113f3e | 533 | static LDOUBLE abs_val(LDOUBLE value) |
9fd4ee5d | 534 | { |
b478e91f UM |
535 | LDOUBLE result = value; |
536 | if (value < 0) | |
537 | result = -value; | |
538 | return result; | |
9fd4ee5d UM |
539 | } |
540 | ||
0f113f3e | 541 | static LDOUBLE pow_10(int in_exp) |
9fd4ee5d | 542 | { |
b478e91f | 543 | LDOUBLE result = 1; |
d8ec0dcf | 544 | while (in_exp) { |
b478e91f | 545 | result *= 10; |
d8ec0dcf | 546 | in_exp--; |
b478e91f UM |
547 | } |
548 | return result; | |
9fd4ee5d UM |
549 | } |
550 | ||
0f113f3e | 551 | static long roundv(LDOUBLE value) |
9fd4ee5d | 552 | { |
b478e91f | 553 | long intpart; |
0f113f3e | 554 | intpart = (long)value; |
b478e91f UM |
555 | value = value - intpart; |
556 | if (value >= 0.5) | |
557 | intpart++; | |
558 | return intpart; | |
559 | } | |
9fd4ee5d | 560 | |
9cb17730 | 561 | static int |
0f113f3e MC |
562 | fmtfp(char **sbuffer, |
563 | char **buffer, | |
564 | size_t *currlen, | |
d6056f08 | 565 | size_t *maxlen, LDOUBLE fvalue, int min, int max, int flags, int style) |
b478e91f UM |
566 | { |
567 | int signvalue = 0; | |
568 | LDOUBLE ufvalue; | |
d6056f08 | 569 | LDOUBLE tmpvalue; |
b478e91f UM |
570 | char iconvert[20]; |
571 | char fconvert[20]; | |
d6056f08 | 572 | char econvert[20]; |
b478e91f UM |
573 | int iplace = 0; |
574 | int fplace = 0; | |
d6056f08 | 575 | int eplace = 0; |
b478e91f UM |
576 | int padlen = 0; |
577 | int zpadlen = 0; | |
d6056f08 | 578 | long exp = 0; |
1b62d880 MC |
579 | unsigned long intpart; |
580 | unsigned long fracpart; | |
581 | unsigned long max10; | |
d6056f08 | 582 | int realstyle; |
b478e91f UM |
583 | |
584 | if (max < 0) | |
585 | max = 6; | |
d6056f08 | 586 | |
b478e91f UM |
587 | if (fvalue < 0) |
588 | signvalue = '-'; | |
589 | else if (flags & DP_F_PLUS) | |
590 | signvalue = '+'; | |
591 | else if (flags & DP_F_SPACE) | |
592 | signvalue = ' '; | |
593 | ||
d6056f08 MC |
594 | /* |
595 | * G_FORMAT sometimes prints like E_FORMAT and sometimes like F_FORMAT | |
596 | * depending on the number to be printed. Work out which one it is and use | |
597 | * that from here on. | |
598 | */ | |
599 | if (style == G_FORMAT) { | |
600 | if (fvalue == 0.0) { | |
601 | realstyle = F_FORMAT; | |
602 | } else if (fvalue < 0.0001) { | |
603 | realstyle = E_FORMAT; | |
604 | } else if ((max == 0 && fvalue >= 10) | |
605 | || (max > 0 && fvalue >= pow_10(max))) { | |
606 | realstyle = E_FORMAT; | |
607 | } else { | |
608 | realstyle = F_FORMAT; | |
609 | } | |
610 | } else { | |
611 | realstyle = style; | |
612 | } | |
613 | ||
614 | if (style != F_FORMAT) { | |
615 | tmpvalue = fvalue; | |
616 | /* Calculate the exponent */ | |
617 | if (fvalue != 0.0) { | |
618 | while (tmpvalue < 1) { | |
619 | tmpvalue *= 10; | |
620 | exp--; | |
621 | } | |
622 | while (tmpvalue > 10) { | |
623 | tmpvalue /= 10; | |
624 | exp++; | |
625 | } | |
626 | } | |
627 | if (style == G_FORMAT) { | |
628 | /* | |
629 | * In G_FORMAT the "precision" represents significant digits. We | |
630 | * always have at least 1 significant digit. | |
631 | */ | |
632 | if (max == 0) | |
633 | max = 1; | |
634 | /* Now convert significant digits to decimal places */ | |
635 | if (realstyle == F_FORMAT) { | |
636 | max -= (exp + 1); | |
637 | if (max < 0) { | |
638 | /* | |
639 | * Should not happen. If we're in F_FORMAT then exp < max? | |
640 | */ | |
d32fc2c5 | 641 | (void)doapr_outch(sbuffer, buffer, currlen, maxlen, '\0'); |
d6056f08 MC |
642 | return 0; |
643 | } | |
644 | } else { | |
645 | /* | |
646 | * In E_FORMAT there is always one significant digit in front | |
647 | * of the decimal point, so: | |
648 | * significant digits == 1 + decimal places | |
649 | */ | |
650 | max--; | |
651 | } | |
652 | } | |
653 | if (realstyle == E_FORMAT) | |
654 | fvalue = tmpvalue; | |
655 | } | |
656 | ufvalue = abs_val(fvalue); | |
082c041b BE |
657 | /* |
658 | * By subtracting 65535 (2^16-1) we cancel the low order 15 bits | |
659 | * of ULONG_MAX to avoid using imprecise floating point values. | |
082c041b | 660 | */ |
41dccd68 | 661 | if (ufvalue >= (double)(ULONG_MAX - 65535) + 65536.0) { |
1b62d880 | 662 | /* Number too big */ |
d32fc2c5 | 663 | (void)doapr_outch(sbuffer, buffer, currlen, maxlen, '\0'); |
1b62d880 MC |
664 | return 0; |
665 | } | |
666 | intpart = (unsigned long)ufvalue; | |
b478e91f | 667 | |
0f113f3e MC |
668 | /* |
669 | * sorry, we only support 9 digits past the decimal because of our | |
670 | * conversion method | |
671 | */ | |
b478e91f UM |
672 | if (max > 9) |
673 | max = 9; | |
674 | ||
0f113f3e MC |
675 | /* |
676 | * we "cheat" by converting the fractional part to integer by multiplying | |
677 | * by a factor of 10 | |
678 | */ | |
2c288b2a NL |
679 | max10 = roundv(pow_10(max)); |
680 | fracpart = roundv(pow_10(max) * (ufvalue - intpart)); | |
b478e91f | 681 | |
032c3ecb | 682 | if (fracpart >= max10) { |
b478e91f | 683 | intpart++; |
032c3ecb | 684 | fracpart -= max10; |
b478e91f | 685 | } |
9fd4ee5d | 686 | |
b478e91f UM |
687 | /* convert integer part */ |
688 | do { | |
b7573c59 | 689 | iconvert[iplace++] = "0123456789"[intpart % 10]; |
b478e91f | 690 | intpart = (intpart / 10); |
a2b0de98 | 691 | } while (intpart && (iplace < (int)sizeof(iconvert))); |
cbe29648 | 692 | if (iplace == sizeof(iconvert)) |
b478e91f UM |
693 | iplace--; |
694 | iconvert[iplace] = 0; | |
695 | ||
696 | /* convert fractional part */ | |
d6056f08 MC |
697 | while (fplace < max) { |
698 | if (style == G_FORMAT && fplace == 0 && (fracpart % 10) == 0) { | |
699 | /* We strip trailing zeros in G_FORMAT */ | |
700 | max--; | |
701 | fracpart = fracpart / 10; | |
702 | if (fplace < max) | |
703 | continue; | |
704 | break; | |
705 | } | |
b7573c59 | 706 | fconvert[fplace++] = "0123456789"[fracpart % 10]; |
b478e91f | 707 | fracpart = (fracpart / 10); |
d6056f08 MC |
708 | } |
709 | ||
b478e91f UM |
710 | fconvert[fplace] = 0; |
711 | ||
d6056f08 MC |
712 | /* convert exponent part */ |
713 | if (realstyle == E_FORMAT) { | |
714 | int tmpexp; | |
715 | if (exp < 0) | |
716 | tmpexp = -exp; | |
717 | else | |
718 | tmpexp = exp; | |
719 | ||
720 | do { | |
721 | econvert[eplace++] = "0123456789"[tmpexp % 10]; | |
722 | tmpexp = (tmpexp / 10); | |
723 | } while (tmpexp > 0 && eplace < (int)sizeof(econvert)); | |
724 | /* Exponent is huge!! Too big to print */ | |
d32fc2c5 P |
725 | if (tmpexp > 0) { |
726 | (void)doapr_outch(sbuffer, buffer, currlen, maxlen, '\0'); | |
d6056f08 | 727 | return 0; |
d32fc2c5 | 728 | } |
d6056f08 MC |
729 | /* Add a leading 0 for single digit exponents */ |
730 | if (eplace == 1) | |
731 | econvert[eplace++] = '0'; | |
732 | } | |
733 | ||
734 | /* | |
735 | * -1 for decimal point (if we have one, i.e. max > 0), | |
736 | * another -1 if we are printing a sign | |
737 | */ | |
738 | padlen = min - iplace - max - (max > 0 ? 1 : 0) - ((signvalue) ? 1 : 0); | |
739 | /* Take some off for exponent prefix "+e" and exponent */ | |
740 | if (realstyle == E_FORMAT) | |
741 | padlen -= 2 + eplace; | |
b478e91f UM |
742 | zpadlen = max - fplace; |
743 | if (zpadlen < 0) | |
744 | zpadlen = 0; | |
745 | if (padlen < 0) | |
746 | padlen = 0; | |
747 | if (flags & DP_F_MINUS) | |
748 | padlen = -padlen; | |
749 | ||
750 | if ((flags & DP_F_ZERO) && (padlen > 0)) { | |
751 | if (signvalue) { | |
9cb17730 MC |
752 | if (!doapr_outch(sbuffer, buffer, currlen, maxlen, signvalue)) |
753 | return 0; | |
b478e91f UM |
754 | --padlen; |
755 | signvalue = 0; | |
756 | } | |
757 | while (padlen > 0) { | |
9cb17730 MC |
758 | if (!doapr_outch(sbuffer, buffer, currlen, maxlen, '0')) |
759 | return 0; | |
b478e91f UM |
760 | --padlen; |
761 | } | |
762 | } | |
763 | while (padlen > 0) { | |
9cb17730 MC |
764 | if (!doapr_outch(sbuffer, buffer, currlen, maxlen, ' ')) |
765 | return 0; | |
b478e91f UM |
766 | --padlen; |
767 | } | |
9cb17730 MC |
768 | if (signvalue && !doapr_outch(sbuffer, buffer, currlen, maxlen, signvalue)) |
769 | return 0; | |
9fd4ee5d | 770 | |
9cb17730 MC |
771 | while (iplace > 0) { |
772 | if (!doapr_outch(sbuffer, buffer, currlen, maxlen, iconvert[--iplace])) | |
773 | return 0; | |
774 | } | |
9fd4ee5d | 775 | |
b478e91f UM |
776 | /* |
777 | * Decimal point. This should probably use locale to find the correct | |
778 | * char to print out. | |
779 | */ | |
c433d725 | 780 | if (max > 0 || (flags & DP_F_NUM)) { |
9cb17730 MC |
781 | if (!doapr_outch(sbuffer, buffer, currlen, maxlen, '.')) |
782 | return 0; | |
9fd4ee5d | 783 | |
9cb17730 | 784 | while (fplace > 0) { |
f479eab2 F |
785 | if (!doapr_outch(sbuffer, buffer, currlen, maxlen, |
786 | fconvert[--fplace])) | |
9cb17730 MC |
787 | return 0; |
788 | } | |
b478e91f UM |
789 | } |
790 | while (zpadlen > 0) { | |
9cb17730 MC |
791 | if (!doapr_outch(sbuffer, buffer, currlen, maxlen, '0')) |
792 | return 0; | |
b478e91f | 793 | --zpadlen; |
9fd4ee5d | 794 | } |
d6056f08 MC |
795 | if (realstyle == E_FORMAT) { |
796 | char ech; | |
797 | ||
798 | if ((flags & DP_F_UP) == 0) | |
799 | ech = 'e'; | |
800 | else | |
801 | ech = 'E'; | |
802 | if (!doapr_outch(sbuffer, buffer, currlen, maxlen, ech)) | |
803 | return 0; | |
804 | if (exp < 0) { | |
805 | if (!doapr_outch(sbuffer, buffer, currlen, maxlen, '-')) | |
806 | return 0; | |
807 | } else { | |
808 | if (!doapr_outch(sbuffer, buffer, currlen, maxlen, '+')) | |
809 | return 0; | |
810 | } | |
811 | while (eplace > 0) { | |
812 | if (!doapr_outch(sbuffer, buffer, currlen, maxlen, | |
813 | econvert[--eplace])) | |
814 | return 0; | |
815 | } | |
816 | } | |
b478e91f UM |
817 | |
818 | while (padlen < 0) { | |
9cb17730 MC |
819 | if (!doapr_outch(sbuffer, buffer, currlen, maxlen, ' ')) |
820 | return 0; | |
b478e91f | 821 | ++padlen; |
9fd4ee5d | 822 | } |
9cb17730 | 823 | return 1; |
9fd4ee5d UM |
824 | } |
825 | ||
f59d72f0 GH |
826 | #endif /* OPENSSL_SYS_UEFI */ |
827 | ||
9cb17730 MC |
828 | #define BUFFER_INC 1024 |
829 | ||
830 | static int | |
0f113f3e MC |
831 | doapr_outch(char **sbuffer, |
832 | char **buffer, size_t *currlen, size_t *maxlen, int c) | |
9fd4ee5d | 833 | { |
88809830 | 834 | /* If we haven't at least one buffer, someone has done a big booboo */ |
86f31dd9 MC |
835 | if (!ossl_assert(*sbuffer != NULL || buffer != NULL)) |
836 | return 0; | |
827dbcb1 | 837 | |
9d9e3774 | 838 | /* |currlen| must always be <= |*maxlen| */ |
86f31dd9 MC |
839 | if (!ossl_assert(*currlen <= *maxlen)) |
840 | return 0; | |
9d9e3774 MC |
841 | |
842 | if (buffer && *currlen == *maxlen) { | |
9cb17730 MC |
843 | if (*maxlen > INT_MAX - BUFFER_INC) |
844 | return 0; | |
845 | ||
846 | *maxlen += BUFFER_INC; | |
9d9e3774 | 847 | if (*buffer == NULL) { |
e077455e | 848 | if ((*buffer = OPENSSL_malloc(*maxlen)) == NULL) |
9cb17730 | 849 | return 0; |
9d9e3774 | 850 | if (*currlen > 0) { |
86f31dd9 MC |
851 | if (!ossl_assert(*sbuffer != NULL)) |
852 | return 0; | |
9d9e3774 MC |
853 | memcpy(*buffer, *sbuffer, *currlen); |
854 | } | |
855 | *sbuffer = NULL; | |
856 | } else { | |
9cb17730 | 857 | char *tmpbuf; |
4e1ebda9 | 858 | |
9cb17730 | 859 | tmpbuf = OPENSSL_realloc(*buffer, *maxlen); |
e077455e | 860 | if (tmpbuf == NULL) |
9cb17730 MC |
861 | return 0; |
862 | *buffer = tmpbuf; | |
0f113f3e | 863 | } |
5ee0d9c4 | 864 | } |
827dbcb1 RL |
865 | |
866 | if (*currlen < *maxlen) { | |
0f113f3e MC |
867 | if (*sbuffer) |
868 | (*sbuffer)[(*currlen)++] = (char)c; | |
869 | else | |
870 | (*buffer)[(*currlen)++] = (char)c; | |
5ee0d9c4 | 871 | } |
5ee0d9c4 | 872 | |
9cb17730 | 873 | return 1; |
9fd4ee5d | 874 | } |
e5c84d51 BM |
875 | |
876 | /***************************************************************************/ | |
877 | ||
0f113f3e MC |
878 | int BIO_printf(BIO *bio, const char *format, ...) |
879 | { | |
880 | va_list args; | |
881 | int ret; | |
882 | ||
883 | va_start(args, format); | |
884 | ||
885 | ret = BIO_vprintf(bio, format, args); | |
886 | ||
887 | va_end(args); | |
26a7d938 | 888 | return ret; |
0f113f3e MC |
889 | } |
890 | ||
891 | int BIO_vprintf(BIO *bio, const char *format, va_list args) | |
892 | { | |
893 | int ret; | |
894 | size_t retlen; | |
895 | char hugebuf[1024 * 2]; /* Was previously 10k, which is unreasonable | |
896 | * in small-stack environments, like threads | |
897 | * or DOS programs. */ | |
898 | char *hugebufp = hugebuf; | |
899 | size_t hugebufsize = sizeof(hugebuf); | |
900 | char *dynbuf = NULL; | |
901 | int ignored; | |
902 | ||
903 | dynbuf = NULL; | |
9cb17730 MC |
904 | if (!_dopr(&hugebufp, &dynbuf, &hugebufsize, &retlen, &ignored, format, |
905 | args)) { | |
906 | OPENSSL_free(dynbuf); | |
907 | return -1; | |
908 | } | |
0f113f3e MC |
909 | if (dynbuf) { |
910 | ret = BIO_write(bio, dynbuf, (int)retlen); | |
911 | OPENSSL_free(dynbuf); | |
912 | } else { | |
913 | ret = BIO_write(bio, hugebuf, (int)retlen); | |
914 | } | |
26a7d938 | 915 | return ret; |
0f113f3e MC |
916 | } |
917 | ||
918 | /* | |
919 | * As snprintf is not available everywhere, we provide our own | |
920 | * implementation. This function has nothing to do with BIOs, but it's | |
921 | * closely related to BIO_printf, and we need *some* name prefix ... (XXX the | |
922 | * function should be renamed, but to what?) | |
923 | */ | |
e5c84d51 | 924 | int BIO_snprintf(char *buf, size_t n, const char *format, ...) |
0f113f3e MC |
925 | { |
926 | va_list args; | |
927 | int ret; | |
e6629837 | 928 | |
0f113f3e | 929 | va_start(args, format); |
e6629837 | 930 | |
0f113f3e | 931 | ret = BIO_vsnprintf(buf, n, format, args); |
e6629837 | 932 | |
0f113f3e | 933 | va_end(args); |
26a7d938 | 934 | return ret; |
0f113f3e | 935 | } |
e6629837 RL |
936 | |
937 | int BIO_vsnprintf(char *buf, size_t n, const char *format, va_list args) | |
0f113f3e MC |
938 | { |
939 | size_t retlen; | |
940 | int truncated; | |
941 | ||
f479eab2 | 942 | if (!_dopr(&buf, NULL, &n, &retlen, &truncated, format, args)) |
9cb17730 | 943 | return -1; |
0f113f3e MC |
944 | |
945 | if (truncated) | |
946 | /* | |
947 | * In case of truncation, return -1 like traditional snprintf. | |
948 | * (Current drafts for ISO/IEC 9899 say snprintf should return the | |
949 | * number of characters that would have been written, had the buffer | |
950 | * been large enough.) | |
951 | */ | |
952 | return -1; | |
4e1ebda9 | 953 | return (retlen <= INT_MAX) ? (int)retlen : -1; |
0f113f3e | 954 | } |