| 1 | /* |
| 2 | * Dolda Connect - Modular multiuser Direct Connect-style client |
| 3 | * Copyright (C) 2004 Fredrik Tolf <fredrik@dolda2000.com> |
| 4 | * |
| 5 | * This program is free software; you can redistribute it and/or modify |
| 6 | * it under the terms of the GNU General Public License as published by |
| 7 | * the Free Software Foundation; either version 2 of the License, or |
| 8 | * (at your option) any later version. |
| 9 | * |
| 10 | * This program is distributed in the hope that it will be useful, |
| 11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 13 | * GNU General Public License for more details. |
| 14 | * |
| 15 | * You should have received a copy of the GNU General Public License |
| 16 | * along with this program; if not, write to the Free Software |
| 17 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 18 | */ |
| 19 | #include <stdlib.h> |
| 20 | #include <stdarg.h> |
| 21 | #include <stdio.h> |
| 22 | #include <wchar.h> |
| 23 | #include <iconv.h> |
| 24 | #include <errno.h> |
| 25 | #include <string.h> |
| 26 | #include <wctype.h> |
| 27 | #include <langinfo.h> |
| 28 | #include <pwd.h> |
| 29 | #include <unistd.h> |
| 30 | #include <sys/time.h> |
| 31 | #include <netinet/in.h> |
| 32 | #include <alloca.h> |
| 33 | |
| 34 | #ifdef HAVE_CONFIG_H |
| 35 | #include <config.h> |
| 36 | #endif |
| 37 | #include <utils.h> |
| 38 | #include <log.h> |
| 39 | |
| 40 | struct treeiter { |
| 41 | struct { |
| 42 | struct btree *n; |
| 43 | int s; |
| 44 | } *st; |
| 45 | size_t stsize; |
| 46 | int sp; |
| 47 | }; |
| 48 | |
| 49 | static char *base64set = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/"; |
| 50 | static int base64rev[] = { |
| 51 | -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, |
| 52 | -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, |
| 53 | -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 62, -1, -1, -1, 63, |
| 54 | 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, -1, -1, -1, -1, -1, -1, |
| 55 | -1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, |
| 56 | 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, -1, -1, -1, -1, -1, |
| 57 | -1, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, |
| 58 | 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, -1, -1, -1, -1, -1, |
| 59 | -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, |
| 60 | -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, |
| 61 | -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, |
| 62 | -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, |
| 63 | -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, |
| 64 | -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, |
| 65 | -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, |
| 66 | -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, |
| 67 | }; |
| 68 | static char *base32set = "ABCDEFGHIJKLMNOPQRSTUVWXYZ234567"; |
| 69 | static int base32rev[] = { |
| 70 | -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, |
| 71 | -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, |
| 72 | -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, |
| 73 | -1, -1, 26, 27, 28, 29, 30, 31, -1, -1, -1, -1, -1, -1, -1, -1, |
| 74 | -1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, |
| 75 | 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, -1, -1, -1, -1, -1, |
| 76 | -1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, |
| 77 | 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, -1, -1, -1, -1, -1, |
| 78 | -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, |
| 79 | -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, |
| 80 | -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, |
| 81 | -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, |
| 82 | -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, |
| 83 | -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, |
| 84 | -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, |
| 85 | -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, |
| 86 | }; |
| 87 | |
| 88 | char *vsprintf2(char *format, va_list al) |
| 89 | { |
| 90 | int ret; |
| 91 | char *buf; |
| 92 | va_list al2; |
| 93 | |
| 94 | va_copy(al2, al); |
| 95 | ret = vsnprintf(NULL, 0, format, al2); |
| 96 | va_end(al2); |
| 97 | if((buf = malloc(ret + 1)) == NULL) |
| 98 | { |
| 99 | LOGOOM(ret + 1); |
| 100 | return(NULL); |
| 101 | } |
| 102 | va_copy(al2, al); |
| 103 | vsnprintf(buf, ret + 1, format, al2); |
| 104 | va_end(al2); |
| 105 | return(buf); |
| 106 | } |
| 107 | |
| 108 | char *sprintf2(char *format, ...) |
| 109 | { |
| 110 | va_list args; |
| 111 | char *buf; |
| 112 | |
| 113 | va_start(args, format); |
| 114 | buf = vsprintf2(format, args); |
| 115 | va_end(args); |
| 116 | return(buf); |
| 117 | } |
| 118 | |
| 119 | wchar_t *vswprintf2(wchar_t *format, va_list al) |
| 120 | { |
| 121 | int ret; |
| 122 | wchar_t *buf; |
| 123 | size_t bufsize; |
| 124 | va_list al2; |
| 125 | |
| 126 | buf = smalloc(sizeof(wchar_t) * (bufsize = 1024)); |
| 127 | while(1) |
| 128 | { |
| 129 | va_copy(al2, al); |
| 130 | ret = vswprintf(buf, bufsize, format, al2); |
| 131 | va_end(al2); |
| 132 | if(ret >= 0) |
| 133 | break; |
| 134 | buf = srealloc(buf, sizeof(wchar_t) * (bufsize *= 2)); |
| 135 | } |
| 136 | if(bufsize > ret + 1) |
| 137 | buf = srealloc(buf, sizeof(wchar_t) * (ret + 1)); |
| 138 | return(buf); |
| 139 | } |
| 140 | |
| 141 | wchar_t *swprintf2(wchar_t *format, ...) |
| 142 | { |
| 143 | va_list args; |
| 144 | wchar_t *buf; |
| 145 | |
| 146 | va_start(args, format); |
| 147 | buf = vswprintf2(format, args); |
| 148 | va_end(args); |
| 149 | return(buf); |
| 150 | } |
| 151 | |
| 152 | int havecharset(char *charset) |
| 153 | { |
| 154 | iconv_t cd; |
| 155 | |
| 156 | if((cd = iconv_open("wchar_t", charset)) == (iconv_t)-1) |
| 157 | return(0); |
| 158 | iconv_close(cd); |
| 159 | if((cd = iconv_open(charset, "wchar_t")) == (iconv_t)-1) |
| 160 | return(0); |
| 161 | iconv_close(cd); |
| 162 | return(1); |
| 163 | } |
| 164 | |
| 165 | wchar_t *icmbstowcs(char *mbs, char *charset) |
| 166 | { |
| 167 | int ret; |
| 168 | char *buf; |
| 169 | char *p, *p2; |
| 170 | size_t len1, len2, bufsize, data; |
| 171 | iconv_t cd; |
| 172 | |
| 173 | len1 = strlen(mbs) + 1; |
| 174 | bufsize = len2 = len1 * sizeof(wchar_t); |
| 175 | if((buf = malloc(bufsize)) == NULL) |
| 176 | { |
| 177 | LOGOOM(bufsize); |
| 178 | return(NULL); |
| 179 | } |
| 180 | if(charset == NULL) |
| 181 | charset = nl_langinfo(CODESET); |
| 182 | if((cd = iconv_open("wchar_t", charset)) == (iconv_t)-1) |
| 183 | { |
| 184 | #ifdef DAEMON |
| 185 | flog(LOG_ERR, "icmbstowcs: could not open iconv structure for %s: %s", charset, strerror(errno)); |
| 186 | #endif |
| 187 | free(buf); |
| 188 | return(NULL); |
| 189 | } |
| 190 | p = buf; |
| 191 | while(len1 > 0) |
| 192 | { |
| 193 | ret = iconv(cd, &mbs, &len1, &p, &len2); |
| 194 | if(ret < 0) |
| 195 | { |
| 196 | if(errno == E2BIG) |
| 197 | { |
| 198 | data = p - buf; |
| 199 | len2 += 128; |
| 200 | bufsize += 128; |
| 201 | if((p2 = realloc(buf, bufsize)) == NULL) |
| 202 | { |
| 203 | LOGOOM(bufsize); |
| 204 | free(buf); |
| 205 | iconv_close(cd); |
| 206 | return(NULL); |
| 207 | } |
| 208 | buf = p2; |
| 209 | p = buf + data; |
| 210 | } else { |
| 211 | free(buf); |
| 212 | iconv_close(cd); |
| 213 | return(NULL); |
| 214 | } |
| 215 | } |
| 216 | } |
| 217 | if(len2 > 0) |
| 218 | buf = realloc(buf, p - buf); |
| 219 | iconv_close(cd); |
| 220 | return((wchar_t *)buf); |
| 221 | } |
| 222 | |
| 223 | wchar_t *icsmbstowcs(char *mbs, char *charset, wchar_t *def) |
| 224 | { |
| 225 | static wchar_t *buf = NULL; |
| 226 | |
| 227 | if(buf != NULL) |
| 228 | free(buf); |
| 229 | if((buf = icmbstowcs(mbs, charset)) == NULL) |
| 230 | { |
| 231 | if((def != NULL) && (*def == L'~')) |
| 232 | { |
| 233 | #ifdef DAEMON |
| 234 | flog(LOG_WARNING, "icsmbstowcs: could not convert wcs string into charset %s: %s", charset, strerror(errno)); |
| 235 | #endif |
| 236 | def++; |
| 237 | } |
| 238 | return(def); |
| 239 | } |
| 240 | return(buf); |
| 241 | } |
| 242 | |
| 243 | char *icwcstombs(wchar_t *wcs, char *charset) |
| 244 | { |
| 245 | int ret; |
| 246 | char *buf; |
| 247 | char *p, *p2; |
| 248 | size_t len1, len2, bufsize, data; |
| 249 | iconv_t cd; |
| 250 | |
| 251 | len1 = sizeof(wchar_t) * (wcslen(wcs) + 1); |
| 252 | bufsize = len2 = len1; |
| 253 | if((buf = malloc(bufsize)) == NULL) |
| 254 | { |
| 255 | #ifdef DAEMON |
| 256 | LOGOOM(bufsize); |
| 257 | #endif |
| 258 | return(NULL); |
| 259 | } |
| 260 | if(charset == NULL) |
| 261 | charset = nl_langinfo(CODESET); |
| 262 | if((cd = iconv_open(charset, "wchar_t")) == (iconv_t)-1) |
| 263 | { |
| 264 | #ifdef DAEMON |
| 265 | flog(LOG_ERR, "icwcstombs: could not open iconv structure for %s: %s", charset, strerror(errno)); |
| 266 | #endif |
| 267 | free(buf); |
| 268 | return(NULL); |
| 269 | } |
| 270 | p = buf; |
| 271 | while(len1 > 0) |
| 272 | { |
| 273 | ret = iconv(cd, (char **)&wcs, &len1, &p, &len2); |
| 274 | if(ret < 0) |
| 275 | { |
| 276 | if(errno == E2BIG) |
| 277 | { |
| 278 | data = p - buf; |
| 279 | len2 += 128; |
| 280 | bufsize += 128; |
| 281 | if((p2 = realloc(buf, bufsize)) == NULL) |
| 282 | { |
| 283 | LOGOOM(bufsize); |
| 284 | free(buf); |
| 285 | iconv_close(cd); |
| 286 | return(NULL); |
| 287 | } |
| 288 | buf = p2; |
| 289 | p = buf + data; |
| 290 | } else { |
| 291 | free(buf); |
| 292 | iconv_close(cd); |
| 293 | return(NULL); |
| 294 | } |
| 295 | } |
| 296 | } |
| 297 | if(len2 > 0) |
| 298 | buf = realloc(buf, p - buf); |
| 299 | iconv_close(cd); |
| 300 | return(buf); |
| 301 | } |
| 302 | |
| 303 | char *icswcstombs(wchar_t *wcs, char *charset, char *def) |
| 304 | { |
| 305 | static char *buf = NULL; |
| 306 | |
| 307 | if(buf != NULL) |
| 308 | free(buf); |
| 309 | if((buf = icwcstombs(wcs, charset)) == NULL) |
| 310 | { |
| 311 | if((def != NULL) && (*def == '~')) |
| 312 | { |
| 313 | #ifdef DAEMON |
| 314 | flog(LOG_WARNING, "icswcstombs: could not convert mbs string from charset %s: %s", charset, strerror(errno)); |
| 315 | #endif |
| 316 | def++; |
| 317 | } |
| 318 | return(def); |
| 319 | } |
| 320 | return(buf); |
| 321 | } |
| 322 | |
| 323 | wchar_t *wcstolower(wchar_t *wcs) |
| 324 | { |
| 325 | wchar_t *p; |
| 326 | |
| 327 | for(p = wcs; *p != L'\0'; p++) |
| 328 | *p = towlower(*p); |
| 329 | return(wcs); |
| 330 | } |
| 331 | |
| 332 | wchar_t ucptowc(int ucp) |
| 333 | { |
| 334 | int ret; |
| 335 | unsigned long ucpbuf; |
| 336 | char *buf; |
| 337 | char *mbsp, *p, *p2; |
| 338 | wchar_t res; |
| 339 | size_t len1, len2, bufsize, data; |
| 340 | iconv_t cd; |
| 341 | |
| 342 | ucpbuf = htonl(ucp); |
| 343 | mbsp = (char *)&ucpbuf; |
| 344 | len1 = 4; |
| 345 | bufsize = len2 = len1 * sizeof(wchar_t); |
| 346 | if((buf = malloc(bufsize)) == NULL) |
| 347 | { |
| 348 | LOGOOM(bufsize); |
| 349 | return(L'\0'); |
| 350 | } |
| 351 | if((cd = iconv_open("wchar_t", "UCS-4BE")) == (iconv_t)-1) |
| 352 | { |
| 353 | #ifdef DAEMON |
| 354 | flog(LOG_ERR, "ucptowc: could not open iconv structure for UCS-4BE: %s", strerror(errno)); |
| 355 | #endif |
| 356 | free(buf); |
| 357 | return(L'\0'); |
| 358 | } |
| 359 | p = buf; |
| 360 | while(len1 > 0) |
| 361 | { |
| 362 | ret = iconv(cd, &mbsp, &len1, &p, &len2); |
| 363 | if(ret < 0) |
| 364 | { |
| 365 | if(errno == E2BIG) |
| 366 | { |
| 367 | data = p - buf; |
| 368 | len2 += 128; |
| 369 | bufsize += 128; |
| 370 | if((p2 = realloc(buf, bufsize)) == NULL) |
| 371 | { |
| 372 | LOGOOM(bufsize); |
| 373 | free(buf); |
| 374 | iconv_close(cd); |
| 375 | return(L'\0'); |
| 376 | } |
| 377 | buf = p2; |
| 378 | p = buf + data; |
| 379 | } else { |
| 380 | free(buf); |
| 381 | iconv_close(cd); |
| 382 | return(L'\0'); |
| 383 | } |
| 384 | } |
| 385 | } |
| 386 | if(len2 > 0) |
| 387 | buf = realloc(buf, p - buf); |
| 388 | iconv_close(cd); |
| 389 | res = *(wchar_t *)buf; |
| 390 | free(buf); |
| 391 | return(res); |
| 392 | } |
| 393 | |
| 394 | void _sizebuf(void **buf, size_t *bufsize, size_t reqsize, size_t elsize, int algo) |
| 395 | { |
| 396 | if(*bufsize >= reqsize) |
| 397 | return; |
| 398 | switch(algo) |
| 399 | { |
| 400 | case 0: |
| 401 | *buf = srealloc(*buf, elsize * ((*bufsize) = reqsize)); |
| 402 | break; |
| 403 | case 1: |
| 404 | if(*bufsize == 0) |
| 405 | *bufsize = 1; |
| 406 | while(*bufsize < reqsize) |
| 407 | *bufsize <<= 1; |
| 408 | *buf = srealloc(*buf, elsize * (*bufsize)); |
| 409 | break; |
| 410 | } |
| 411 | } |
| 412 | |
| 413 | double ntime(void) |
| 414 | { |
| 415 | struct timeval tv; |
| 416 | |
| 417 | gettimeofday(&tv, NULL); |
| 418 | return((double)tv.tv_sec + ((double)tv.tv_usec / 1000000.0)); |
| 419 | } |
| 420 | |
| 421 | int wcsexists(wchar_t *h, wchar_t *n) |
| 422 | { |
| 423 | int i, o, nl, hl; |
| 424 | wchar_t *ln, *lh; |
| 425 | |
| 426 | ln = alloca(sizeof(*ln) * (nl = wcslen(n))); |
| 427 | for(i = 0; i < nl; i++) |
| 428 | ln[i] = towlower(n[i]); |
| 429 | lh = alloca(sizeof(*lh) * (hl = wcslen(h))); |
| 430 | if(nl > hl) |
| 431 | return(0); |
| 432 | for(i = 0; i < nl; i++) |
| 433 | lh[i] = towlower(h[i]); |
| 434 | i = 0; |
| 435 | while(1) |
| 436 | { |
| 437 | for(o = 0; o < nl; o++) |
| 438 | { |
| 439 | if(lh[i + o] != ln[o]) |
| 440 | break; |
| 441 | } |
| 442 | if(o == nl) |
| 443 | return(1); |
| 444 | if(i == hl - nl) |
| 445 | return(0); |
| 446 | lh[i + nl] = towlower(h[i + nl]); |
| 447 | i++; |
| 448 | } |
| 449 | } |
| 450 | |
| 451 | #ifndef HAVE_WCSCASECMP |
| 452 | int wcscasecmp(const wchar_t *s1, const wchar_t *s2) |
| 453 | { |
| 454 | for(; (towlower(*s1) == towlower(*s2)) && (*s1 != L'\0'); s1++, s2++); |
| 455 | return(towlower(*s1) - towlower(*s2)); |
| 456 | } |
| 457 | #endif |
| 458 | |
| 459 | char *hexencode(char *data, size_t datalen) |
| 460 | { |
| 461 | char *buf, this; |
| 462 | size_t bufsize, bufdata; |
| 463 | int dig; |
| 464 | |
| 465 | buf = NULL; |
| 466 | bufsize = bufdata = 0; |
| 467 | for(; datalen > 0; datalen--, data++) |
| 468 | { |
| 469 | dig = (*data & 0xF0) >> 4; |
| 470 | if(dig > 9) |
| 471 | this = 'A' + dig - 10; |
| 472 | else |
| 473 | this = dig + '0'; |
| 474 | addtobuf(buf, this); |
| 475 | dig = *data & 0x0F; |
| 476 | if(dig > 9) |
| 477 | this = 'A' + dig - 10; |
| 478 | else |
| 479 | this = dig + '0'; |
| 480 | addtobuf(buf, this); |
| 481 | } |
| 482 | addtobuf(buf, 0); |
| 483 | return(buf); |
| 484 | } |
| 485 | |
| 486 | char *hexdecode(char *data, size_t *len) |
| 487 | { |
| 488 | char *buf, this, bit; |
| 489 | size_t bufsize, bufdata; |
| 490 | |
| 491 | buf = NULL; |
| 492 | bufsize = bufdata = 0; |
| 493 | for(bit = 4, this = 0; *data; data++) |
| 494 | { |
| 495 | if((*data >= 'A') && (*data <= 'F')) |
| 496 | { |
| 497 | this |= (this & 0x0F) | ((*data - 'A' + 10) << bit); |
| 498 | } else if((*data >= 'a') && (*data <= 'f')) { |
| 499 | this |= (this & 0x0F) | ((*data - 'a' + 10) << bit); |
| 500 | } else if((*data >= '0') && (*data <= '9')) { |
| 501 | this |= (this & 0x0F) | ((*data - '0') << bit); |
| 502 | } else if(*data == '\n') { |
| 503 | continue; |
| 504 | } else { |
| 505 | if(buf != NULL) |
| 506 | free(buf); |
| 507 | return(NULL); |
| 508 | } |
| 509 | if(bit == 4) { |
| 510 | bit = 0; |
| 511 | } else { |
| 512 | bit = 4; |
| 513 | addtobuf(buf, this); |
| 514 | this = 0; |
| 515 | } |
| 516 | } |
| 517 | if(bit != 4) { |
| 518 | if(buf != NULL) |
| 519 | free(buf); |
| 520 | return(NULL); |
| 521 | } |
| 522 | addtobuf(buf, 0); |
| 523 | if(len != NULL) |
| 524 | *len = bufdata - 1; |
| 525 | return(buf); |
| 526 | } |
| 527 | |
| 528 | char *base64encode(char *data, size_t datalen) |
| 529 | { |
| 530 | char *buf; |
| 531 | size_t bufsize, bufdata; |
| 532 | |
| 533 | if(datalen == 0) |
| 534 | return(sstrdup("")); |
| 535 | buf = NULL; |
| 536 | bufsize = bufdata = 0; |
| 537 | while(datalen >= 3) |
| 538 | { |
| 539 | addtobuf(buf, base64set[(data[0] & 0xfc) >> 2]); |
| 540 | addtobuf(buf, base64set[((data[0] & 0x03) << 4) | ((data[1] & 0xf0) >> 4)]); |
| 541 | addtobuf(buf, base64set[((data[1] & 0x0f) << 2) | ((data[2] & 0xc0) >> 6)]); |
| 542 | addtobuf(buf, base64set[data[2] & 0x3f]); |
| 543 | datalen -= 3; |
| 544 | data += 3; |
| 545 | } |
| 546 | if(datalen == 1) |
| 547 | { |
| 548 | addtobuf(buf, base64set[(data[0] & 0xfc) >> 2]); |
| 549 | addtobuf(buf, base64set[(data[0] & 0x03) << 4]); |
| 550 | bufcat(buf, "==", 2); |
| 551 | } |
| 552 | if(datalen == 2) |
| 553 | { |
| 554 | addtobuf(buf, base64set[(data[0] & 0xfc) >> 2]); |
| 555 | addtobuf(buf, base64set[((data[0] & 0x03) << 4) | ((data[1] & 0xf0) >> 4)]); |
| 556 | addtobuf(buf, base64set[(data[1] & 0x0f) << 2]); |
| 557 | addtobuf(buf, '='); |
| 558 | } |
| 559 | addtobuf(buf, 0); |
| 560 | return(buf); |
| 561 | } |
| 562 | |
| 563 | char *base64decode(char *data, size_t *datalen) |
| 564 | { |
| 565 | int b, c; |
| 566 | char *buf, cur; |
| 567 | size_t bufsize, bufdata; |
| 568 | |
| 569 | buf = NULL; |
| 570 | bufsize = bufdata = 0; |
| 571 | cur = 0; |
| 572 | b = 8; |
| 573 | for(; *data > 0; data++) |
| 574 | { |
| 575 | c = (int)(unsigned char)*data; |
| 576 | if(c == '=') |
| 577 | break; |
| 578 | if(c == '\n') |
| 579 | continue; |
| 580 | if(base64rev[c] == -1) |
| 581 | { |
| 582 | if(buf != NULL) |
| 583 | free(buf); |
| 584 | return(NULL); |
| 585 | } |
| 586 | b -= 6; |
| 587 | if(b <= 0) |
| 588 | { |
| 589 | cur |= base64rev[c] >> -b; |
| 590 | addtobuf(buf, cur); |
| 591 | b += 8; |
| 592 | cur = 0; |
| 593 | } |
| 594 | cur |= base64rev[c] << b; |
| 595 | } |
| 596 | if(datalen != NULL) |
| 597 | *datalen = bufdata; |
| 598 | addtobuf(buf, 0); |
| 599 | return(buf); |
| 600 | } |
| 601 | |
| 602 | char *base32encode(char *data, size_t datalen) |
| 603 | { |
| 604 | char *buf; |
| 605 | size_t bufsize, bufdata; |
| 606 | |
| 607 | if(datalen == 0) |
| 608 | return(sstrdup("")); |
| 609 | buf = NULL; |
| 610 | bufsize = bufdata = 0; |
| 611 | while(datalen >= 5) |
| 612 | { |
| 613 | addtobuf(buf, base32set[((data[0] & 0xf8) >> 3)]); |
| 614 | addtobuf(buf, base32set[((data[0] & 0x07) << 2) | ((data[1] & 0xc0) >> 6)]); |
| 615 | addtobuf(buf, base32set[((data[1] & 0x3e) >> 1)]); |
| 616 | addtobuf(buf, base32set[((data[1] & 0x01) << 4) | ((data[2] & 0xf0) >> 4)]); |
| 617 | addtobuf(buf, base32set[((data[2] & 0x0f) << 1) | ((data[3] & 0x80) >> 7)]); |
| 618 | addtobuf(buf, base32set[((data[3] & 0x7c) >> 2)]); |
| 619 | addtobuf(buf, base32set[((data[3] & 0x03) << 3) | ((data[4] & 0xe0) >> 5)]); |
| 620 | addtobuf(buf, base32set[data[4] & 0x1f]); |
| 621 | datalen -= 5; |
| 622 | data += 5; |
| 623 | } |
| 624 | if(datalen == 1) |
| 625 | { |
| 626 | addtobuf(buf, base32set[((data[0] & 0xf8) >> 3)]); |
| 627 | addtobuf(buf, base32set[((data[0] & 0x07) << 2)]); |
| 628 | bufcat(buf, "======", 6); |
| 629 | } |
| 630 | if(datalen == 2) |
| 631 | { |
| 632 | addtobuf(buf, base32set[((data[0] & 0xf8) >> 3)]); |
| 633 | addtobuf(buf, base32set[((data[0] & 0x07) << 2) | ((data[1] & 0xc0) >> 6)]); |
| 634 | addtobuf(buf, base32set[((data[1] & 0x3e) >> 1)]); |
| 635 | addtobuf(buf, base32set[((data[1] & 0x01) << 4)]); |
| 636 | bufcat(buf, "====", 4); |
| 637 | } |
| 638 | if(datalen == 3) |
| 639 | { |
| 640 | addtobuf(buf, base32set[((data[0] & 0xf8) >> 3)]); |
| 641 | addtobuf(buf, base32set[((data[0] & 0x07) << 2) | ((data[1] & 0xc0) >> 6)]); |
| 642 | addtobuf(buf, base32set[((data[1] & 0x3e) >> 1)]); |
| 643 | addtobuf(buf, base32set[((data[1] & 0x01) << 4) | ((data[2] & 0xf0) >> 4)]); |
| 644 | addtobuf(buf, base32set[((data[2] & 0x0f) << 1)]); |
| 645 | bufcat(buf, "===", 3); |
| 646 | } |
| 647 | if(datalen == 4) |
| 648 | { |
| 649 | addtobuf(buf, base32set[((data[0] & 0xf8) >> 3)]); |
| 650 | addtobuf(buf, base32set[((data[0] & 0x07) << 2) | ((data[1] & 0xc0) >> 6)]); |
| 651 | addtobuf(buf, base32set[((data[1] & 0x3e) >> 1)]); |
| 652 | addtobuf(buf, base32set[((data[1] & 0x01) << 4) | ((data[2] & 0xf0) >> 4)]); |
| 653 | addtobuf(buf, base32set[((data[2] & 0x0f) << 1) | ((data[3] & 0x80) >> 7)]); |
| 654 | addtobuf(buf, base32set[((data[3] & 0x7c) >> 2)]); |
| 655 | addtobuf(buf, base32set[((data[3] & 0x03) << 3)]); |
| 656 | bufcat(buf, "=", 1); |
| 657 | } |
| 658 | addtobuf(buf, 0); |
| 659 | return(buf); |
| 660 | } |
| 661 | |
| 662 | char *base32decode(char *data, size_t *datalen) |
| 663 | { |
| 664 | int b, c; |
| 665 | char *buf, cur; |
| 666 | size_t bufsize, bufdata; |
| 667 | |
| 668 | buf = NULL; |
| 669 | bufsize = bufdata = 0; |
| 670 | cur = 0; |
| 671 | b = 8; |
| 672 | for(; *data > 0; data++) |
| 673 | { |
| 674 | c = (int)(unsigned char)*data; |
| 675 | if(c == '=') |
| 676 | break; |
| 677 | if(c == '\n') |
| 678 | continue; |
| 679 | if(base32rev[c] == -1) |
| 680 | { |
| 681 | if(buf != NULL) |
| 682 | free(buf); |
| 683 | return(NULL); |
| 684 | } |
| 685 | b -= 5; |
| 686 | if(b <= 0) |
| 687 | { |
| 688 | cur |= base32rev[c] >> -b; |
| 689 | addtobuf(buf, cur); |
| 690 | b += 8; |
| 691 | cur = 0; |
| 692 | } |
| 693 | cur |= base32rev[c] << b; |
| 694 | } |
| 695 | if(datalen != NULL) |
| 696 | *datalen = bufdata; |
| 697 | addtobuf(buf, 0); |
| 698 | return(buf); |
| 699 | } |
| 700 | |
| 701 | void _freeparr(void **arr) |
| 702 | { |
| 703 | void **buf; |
| 704 | |
| 705 | if(arr == NULL) |
| 706 | return; |
| 707 | for(buf = arr; *buf != NULL; buf++) |
| 708 | free(*buf); |
| 709 | free(arr); |
| 710 | } |
| 711 | |
| 712 | int _parrlen(void **arr) |
| 713 | { |
| 714 | int i; |
| 715 | |
| 716 | if(arr == NULL) |
| 717 | return(0); |
| 718 | for(i = 0; *arr != NULL; arr++) |
| 719 | i++; |
| 720 | return(i); |
| 721 | } |
| 722 | |
| 723 | char *getetcpath(char *binpath) |
| 724 | { |
| 725 | int f; |
| 726 | char *etcpath, *p; |
| 727 | size_t etcpathsize, etcpathdata; |
| 728 | |
| 729 | etcpath = NULL; |
| 730 | etcpathsize = etcpathdata = 0; |
| 731 | f = 1; |
| 732 | do |
| 733 | { |
| 734 | if(f) |
| 735 | f = 0; |
| 736 | else |
| 737 | binpath++; |
| 738 | for(p = binpath; *p && (*p != ':'); p++); |
| 739 | for(; (p >= binpath) && (*p != '/'); p--); |
| 740 | if(p >= binpath) |
| 741 | { |
| 742 | if(etcpathdata > 0) |
| 743 | addtobuf(etcpath, ':'); |
| 744 | bufcat(etcpath, binpath, p - binpath + 1); |
| 745 | bufcat(etcpath, "etc", 3); |
| 746 | } |
| 747 | } while((binpath = strchr(binpath, ':')) != NULL); |
| 748 | addtobuf(etcpath, 0); |
| 749 | return(etcpath); |
| 750 | } |
| 751 | |
| 752 | char *findfile(char *name, char *homedir, int filldef) |
| 753 | { |
| 754 | char *path, *binpath, *etcpath, *p; |
| 755 | struct passwd *pw; |
| 756 | int mode, homeonly; |
| 757 | |
| 758 | if(name == NULL) |
| 759 | return(NULL); |
| 760 | |
| 761 | mode = R_OK | (filldef ? W_OK : 0); |
| 762 | homeonly = homedir != NULL; |
| 763 | |
| 764 | if(!strchr(name, '/')) |
| 765 | { |
| 766 | if(homedir == NULL) |
| 767 | homedir = getenv("HOME"); |
| 768 | if((homedir == NULL) && ((pw = getpwuid(getuid())) != NULL)) |
| 769 | homedir = pw->pw_dir; |
| 770 | if((homedir != NULL) && ((path = sprintf2("%s/.%s", homedir, name)) != NULL)) |
| 771 | { |
| 772 | if(!access(path, mode)) |
| 773 | return(path); |
| 774 | free(path); |
| 775 | } |
| 776 | } |
| 777 | |
| 778 | if(!homeonly) |
| 779 | { |
| 780 | if(strchr(name, '/') != NULL) |
| 781 | { |
| 782 | if(!access(name, mode)) |
| 783 | return(sstrdup(name)); |
| 784 | } else { |
| 785 | if((binpath = getenv("PATH")) == NULL) |
| 786 | etcpath = sstrdup("/usr/local/etc:/etc:/usr/etc"); |
| 787 | else |
| 788 | etcpath = getetcpath(binpath); |
| 789 | for(p = strtok(etcpath, ":"); p != NULL; p = strtok(NULL, ":")) |
| 790 | { |
| 791 | if((path = sprintf2("%s/%s", p, name)) != NULL) |
| 792 | { |
| 793 | if(!access(path, mode)) |
| 794 | { |
| 795 | free(etcpath); |
| 796 | return(path); |
| 797 | } |
| 798 | free(path); |
| 799 | } |
| 800 | } |
| 801 | free(etcpath); |
| 802 | } |
| 803 | } |
| 804 | |
| 805 | if(filldef) { |
| 806 | if(homedir) |
| 807 | return(sprintf2("%s/.%s", homedir, name)); |
| 808 | return(sprintf2("/etc/%s", name)); |
| 809 | } else { |
| 810 | return(NULL); |
| 811 | } |
| 812 | } |
| 813 | |
| 814 | struct strpair *newstrpair(char *key, char *val, struct strpair **list) |
| 815 | { |
| 816 | struct strpair *pair; |
| 817 | |
| 818 | pair = smalloc(sizeof(*pair)); |
| 819 | memset(pair, 0, sizeof(*pair)); |
| 820 | if(key != NULL) |
| 821 | pair->key = sstrdup(key); |
| 822 | if(val != NULL) |
| 823 | pair->val = sstrdup(val); |
| 824 | if(list != NULL) |
| 825 | { |
| 826 | pair->next = *list; |
| 827 | *list = pair; |
| 828 | } |
| 829 | return(pair); |
| 830 | } |
| 831 | |
| 832 | void freestrpair(struct strpair *pair, struct strpair **list) |
| 833 | { |
| 834 | struct strpair *cur; |
| 835 | |
| 836 | for(cur = *list; cur != NULL; list = &(cur->next), cur = cur->next) |
| 837 | { |
| 838 | if(cur == pair) |
| 839 | { |
| 840 | *list = cur->next; |
| 841 | break; |
| 842 | } |
| 843 | } |
| 844 | free(pair->key); |
| 845 | free(pair->val); |
| 846 | free(pair); |
| 847 | } |
| 848 | |
| 849 | char *spfind(struct strpair *list, char *key) |
| 850 | { |
| 851 | for(; list != NULL; list = list->next) |
| 852 | { |
| 853 | if(!strcmp(list->key, key)) |
| 854 | return(list->val); |
| 855 | } |
| 856 | return(NULL); |
| 857 | } |
| 858 | |
| 859 | struct wcspair *newwcspair(wchar_t *key, wchar_t *val, struct wcspair **list) |
| 860 | { |
| 861 | struct wcspair *pair; |
| 862 | |
| 863 | pair = smalloc(sizeof(*pair)); |
| 864 | memset(pair, 0, sizeof(*pair)); |
| 865 | if(key != NULL) |
| 866 | pair->key = swcsdup(key); |
| 867 | if(val != NULL) |
| 868 | pair->val = swcsdup(val); |
| 869 | if(list != NULL) |
| 870 | { |
| 871 | pair->next = *list; |
| 872 | *list = pair; |
| 873 | } |
| 874 | return(pair); |
| 875 | } |
| 876 | |
| 877 | void freewcspair(struct wcspair *pair, struct wcspair **list) |
| 878 | { |
| 879 | struct wcspair *cur; |
| 880 | |
| 881 | for(cur = *list; cur != NULL; list = &(cur->next), cur = cur->next) |
| 882 | { |
| 883 | if(cur == pair) |
| 884 | { |
| 885 | *list = cur->next; |
| 886 | break; |
| 887 | } |
| 888 | } |
| 889 | free(pair->key); |
| 890 | free(pair->val); |
| 891 | free(pair); |
| 892 | } |
| 893 | |
| 894 | wchar_t *wpfind(struct wcspair *list, wchar_t *key) |
| 895 | { |
| 896 | for(; list != NULL; list = list->next) |
| 897 | { |
| 898 | if(!wcscmp(list->key, key)) |
| 899 | return(list->val); |
| 900 | } |
| 901 | return(NULL); |
| 902 | } |
| 903 | |
| 904 | static int btheight(struct btree *tree) |
| 905 | { |
| 906 | if(tree == NULL) |
| 907 | return(0); |
| 908 | return(tree->h); |
| 909 | } |
| 910 | |
| 911 | static void btsetheight(struct btree *tree) |
| 912 | { |
| 913 | int lh, rh; |
| 914 | |
| 915 | if(tree == NULL) |
| 916 | return; |
| 917 | lh = btheight(tree->l); |
| 918 | rh = btheight(tree->r); |
| 919 | tree->h = ((lh > rh)?lh:rh) + 1; |
| 920 | } |
| 921 | |
| 922 | static void bbtrl(struct btree **tree); |
| 923 | |
| 924 | static void bbtrr(struct btree **tree) |
| 925 | { |
| 926 | struct btree *m, *l, *r; |
| 927 | |
| 928 | if(btheight((*tree)->l->r) > btheight((*tree)->l->l)) |
| 929 | bbtrl(&(*tree)->l); |
| 930 | r = (*tree); |
| 931 | l = r->l; |
| 932 | m = l->r; |
| 933 | r->l = m; |
| 934 | btsetheight(r); |
| 935 | l->r = r; |
| 936 | btsetheight(l); |
| 937 | *tree = l; |
| 938 | } |
| 939 | |
| 940 | static void bbtrl(struct btree **tree) |
| 941 | { |
| 942 | struct btree *m, *l, *r; |
| 943 | |
| 944 | if(btheight((*tree)->r->l) > btheight((*tree)->r->r)) |
| 945 | bbtrr(&(*tree)->r); |
| 946 | l = (*tree); |
| 947 | r = l->r; |
| 948 | m = r->l; |
| 949 | l->r = m; |
| 950 | btsetheight(l); |
| 951 | r->l = l; |
| 952 | btsetheight(r); |
| 953 | *tree = r; |
| 954 | } |
| 955 | |
| 956 | int bbtreedel(struct btree **tree, void *item, int (*cmp)(void *, void *)) |
| 957 | { |
| 958 | int c, r; |
| 959 | struct btree *s, **sp, *o; |
| 960 | |
| 961 | if(*tree == NULL) |
| 962 | return(0); |
| 963 | if((c = cmp(item, (*tree)->d)) < 0) { |
| 964 | r = bbtreedel(&(*tree)->l, item, cmp); |
| 965 | } else if(c > 0) { |
| 966 | r = bbtreedel(&(*tree)->r, item, cmp); |
| 967 | } else { |
| 968 | r = 1; |
| 969 | o = *tree; |
| 970 | if(((*tree)->r != NULL) && ((*tree)->l != NULL)) { |
| 971 | sp = &(*tree)->r; |
| 972 | s = *sp; |
| 973 | while(s->l != NULL) { |
| 974 | sp = &(s->l); |
| 975 | s = *sp; |
| 976 | } |
| 977 | *sp = NULL; |
| 978 | s->l = (*tree)->l; |
| 979 | s->r = (*tree)->r; |
| 980 | *tree = s; |
| 981 | } else if((*tree)->l != NULL) { |
| 982 | *tree = (*tree)->l; |
| 983 | } else if((*tree)->r != NULL) { |
| 984 | *tree = (*tree)->r; |
| 985 | } else { |
| 986 | *tree = NULL; |
| 987 | } |
| 988 | free(o); |
| 989 | } |
| 990 | if(*tree != NULL) { |
| 991 | btsetheight(*tree); |
| 992 | if(btheight((*tree)->l) > btheight((*tree)->r) + 1) |
| 993 | bbtrr(tree); |
| 994 | if(btheight((*tree)->r) > btheight((*tree)->l) + 1) |
| 995 | bbtrl(tree); |
| 996 | } |
| 997 | return(r); |
| 998 | } |
| 999 | |
| 1000 | int bbtreeput(struct btree **tree, void *item, int (*cmp)(void *, void *)) |
| 1001 | { |
| 1002 | int c, r; |
| 1003 | |
| 1004 | if(*tree == NULL) { |
| 1005 | *tree = smalloc(sizeof(**tree)); |
| 1006 | (*tree)->l = (*tree)->r = NULL; |
| 1007 | (*tree)->d = item; |
| 1008 | (*tree)->h = 1; |
| 1009 | return(1); |
| 1010 | } |
| 1011 | if((c = cmp(item, (*tree)->d)) < 0) |
| 1012 | r = bbtreeput(&(*tree)->l, item, cmp); |
| 1013 | else if(c > 0) |
| 1014 | r = bbtreeput(&(*tree)->r, item, cmp); |
| 1015 | else |
| 1016 | return(0); |
| 1017 | btsetheight(*tree); |
| 1018 | if(btheight((*tree)->l) > btheight((*tree)->r) + 1) |
| 1019 | bbtrr(tree); |
| 1020 | if(btheight((*tree)->r) > btheight((*tree)->l) + 1) |
| 1021 | bbtrl(tree); |
| 1022 | return(r); |
| 1023 | } |
| 1024 | |
| 1025 | void *btreeget(struct btree *tree, void *key, int (*cmp)(void *, void *)) |
| 1026 | { |
| 1027 | int c; |
| 1028 | |
| 1029 | while(1) { |
| 1030 | if(tree == NULL) |
| 1031 | return(NULL); |
| 1032 | c = cmp(key, tree->d); |
| 1033 | if(c < 0) |
| 1034 | tree = tree->l; |
| 1035 | else if(c > 0) |
| 1036 | tree = tree->r; |
| 1037 | else |
| 1038 | return(tree->d); |
| 1039 | } |
| 1040 | } |
| 1041 | |
| 1042 | void btreefree(struct btree *tree) |
| 1043 | { |
| 1044 | if(tree == NULL) |
| 1045 | return; |
| 1046 | btreefree(tree->l); |
| 1047 | btreefree(tree->r); |
| 1048 | free(tree); |
| 1049 | } |
| 1050 | |
| 1051 | static void *btreenext(void **iterp) |
| 1052 | { |
| 1053 | struct treeiter *iter; |
| 1054 | int s; |
| 1055 | struct btree *n; |
| 1056 | |
| 1057 | if((iter = *iterp) == NULL) |
| 1058 | return(NULL); |
| 1059 | while(1) { |
| 1060 | s = iter->st[iter->sp].s; |
| 1061 | n = iter->st[iter->sp].n; |
| 1062 | if(s == 0) { |
| 1063 | iter->st[iter->sp].s = 1; |
| 1064 | if(n->l != NULL) { |
| 1065 | iter->sp++; |
| 1066 | sizebuf2(iter->st, iter->sp + 1, 1); |
| 1067 | iter->st[iter->sp].s = 0; |
| 1068 | iter->st[iter->sp].n = n->l; |
| 1069 | } |
| 1070 | } else if(s == 1) { |
| 1071 | iter->st[iter->sp].s = 2; |
| 1072 | return(iter->st[iter->sp].n->d); |
| 1073 | } else if(s == 2) { |
| 1074 | iter->st[iter->sp].s = 3; |
| 1075 | if(n->r != NULL) { |
| 1076 | iter->sp++; |
| 1077 | sizebuf2(iter->st, iter->sp + 1, 1); |
| 1078 | iter->st[iter->sp].s = 0; |
| 1079 | iter->st[iter->sp].n = n->r; |
| 1080 | } |
| 1081 | } else { |
| 1082 | iter->sp--; |
| 1083 | if(iter->sp < 0) { |
| 1084 | free(iter->st); |
| 1085 | free(iter); |
| 1086 | *iterp = NULL; |
| 1087 | return(NULL); |
| 1088 | } |
| 1089 | } |
| 1090 | } |
| 1091 | } |
| 1092 | |
| 1093 | static void *btreefirst(struct btree *tree, void **iterp) |
| 1094 | { |
| 1095 | struct treeiter *iter; |
| 1096 | |
| 1097 | if(tree == NULL) { |
| 1098 | *iterp = NULL; |
| 1099 | return(NULL); |
| 1100 | } |
| 1101 | *iterp = iter = memset(smalloc(sizeof(*iter)), 0, sizeof(*iter)); |
| 1102 | sizebuf2(iter->st, 1, 1); |
| 1103 | iter->st[0].n = tree; |
| 1104 | iter->st[0].s = 0; |
| 1105 | return(btreenext(iterp)); |
| 1106 | } |
| 1107 | |
| 1108 | static void btreestop(void **iterp) |
| 1109 | { |
| 1110 | struct treeiter *iter; |
| 1111 | |
| 1112 | if((iter = *iterp) == NULL) |
| 1113 | return; |
| 1114 | if(iter->st != NULL) |
| 1115 | free(iter->st); |
| 1116 | free(iter); |
| 1117 | *iterp = NULL; |
| 1118 | } |
| 1119 | |
| 1120 | void *btreeiter(struct btree *tree) |
| 1121 | { |
| 1122 | static void *iter = NULL; |
| 1123 | |
| 1124 | if(tree == NULL) { |
| 1125 | return(btreenext(&iter)); |
| 1126 | } else { |
| 1127 | if(iter != NULL) |
| 1128 | btreestop(&iter); |
| 1129 | return(btreefirst(tree, &iter)); |
| 1130 | } |
| 1131 | } |