| File: | d/httptime.c |
| Warning: | line 191, column 13 Duplicate code detected |
| Note: | line 236, column 9 Similar code here |
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| 1 | /* |
| 2 | * The contents of this file are subject to the Mozilla Public License |
| 3 | * Version 1.1 (the "License"); you may not use this file except in |
| 4 | * compliance with the License. You may obtain a copy of the License at |
| 5 | * http://mozilla.org/. |
| 6 | * |
| 7 | * Software distributed under the License is distributed on an "AS IS" |
| 8 | * basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See |
| 9 | * the License for the specific language governing rights and limitations |
| 10 | * under the License. |
| 11 | * |
| 12 | * The Original Code is AOLserver Code and related documentation |
| 13 | * distributed by AOL. |
| 14 | * |
| 15 | * The Initial Developer of the Original Code is America Online, |
| 16 | * Inc. Portions created by AOL are Copyright (C) 1999 America Online, |
| 17 | * Inc. All Rights Reserved. |
| 18 | * |
| 19 | * Alternatively, the contents of this file may be used under the terms |
| 20 | * of the GNU General Public License (the "GPL"), in which case the |
| 21 | * provisions of GPL are applicable instead of those above. If you wish |
| 22 | * to allow use of your version of this file only under the terms of the |
| 23 | * GPL and not to allow others to use your version of this file under the |
| 24 | * License, indicate your decision by deleting the provisions above and |
| 25 | * replace them with the notice and other provisions required by the GPL. |
| 26 | * If you do not delete the provisions above, a recipient may use your |
| 27 | * version of this file under either the License or the GPL. |
| 28 | */ |
| 29 | |
| 30 | |
| 31 | /* |
| 32 | * httptime.c -- |
| 33 | * |
| 34 | * Manipulate times and dates; this is strongly influenced |
| 35 | * by HTSUtils.c from CERN. See also RFC 1123. |
| 36 | */ |
| 37 | |
| 38 | #include "nsd.h" |
| 39 | |
| 40 | /* |
| 41 | * Local functions defined in this file |
| 42 | */ |
| 43 | |
| 44 | static int MakeNum(const char *s) |
| 45 | NS_GNUC_NONNULL(1)__attribute__((__nonnull__(1))); |
| 46 | |
| 47 | static int MakeMonth(const char *s) |
| 48 | NS_GNUC_NONNULL(1)__attribute__((__nonnull__(1))); |
| 49 | |
| 50 | |
| 51 | /* |
| 52 | * Static variables defined in this file |
| 53 | */ |
| 54 | |
| 55 | static const char *const month_names[] = { |
| 56 | "Jan", "Feb", "Mar", "Apr", "May", "Jun", |
| 57 | "Jul", "Aug", "Sep", "Oct", "Nov", "Dec" |
| 58 | }; |
| 59 | |
| 60 | static const char *const week_names[] = { |
| 61 | "Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat" |
| 62 | }; |
| 63 | |
| 64 | #ifdef HAVE_TIMEGM1 |
| 65 | static Ns_Mutex lock; |
| 66 | #endif |
| 67 | |
| 68 | |
| 69 | /* |
| 70 | *---------------------------------------------------------------------- |
| 71 | * |
| 72 | * Ns_Httptime -- |
| 73 | * |
| 74 | * Convert a time_t into a time/date format used in HTTP |
| 75 | * (see RFC 1123). If passed-in time is null, then the |
| 76 | * current time will be used. |
| 77 | * |
| 78 | * Results: |
| 79 | * The string time, or NULL if error. |
| 80 | * |
| 81 | * Side effects: |
| 82 | * None. |
| 83 | * |
| 84 | *---------------------------------------------------------------------- |
| 85 | */ |
| 86 | |
| 87 | char * |
| 88 | Ns_HttpTime(Ns_DStringTcl_DString *dsPtr, const time_t *when) |
| 89 | { |
| 90 | time_t now; |
| 91 | const struct tm *tmPtr; |
| 92 | char *result = NULL((void*)0); |
| 93 | |
| 94 | NS_NONNULL_ASSERT(dsPtr != NULL)((void) (0)); |
| 95 | |
| 96 | if (when == NULL((void*)0)) { |
| 97 | now = time(NULL((void*)0)); |
| 98 | when = &now; |
| 99 | } |
| 100 | tmPtr = ns_gmtime(when); |
| 101 | if (likely(tmPtr != NULL)(__builtin_expect((tmPtr != ((void*)0)), 1))) { |
| 102 | |
| 103 | /* |
| 104 | * The format is RFC 1123 "Sun, 06 Nov 1997 09:12:45 GMT" |
| 105 | * and is locale independent, so English week and month names |
| 106 | * must always be used. |
| 107 | */ |
| 108 | |
| 109 | Ns_DStringPrintf(dsPtr, "%s, %02d %s %d %02d:%02d:%02d GMT", |
| 110 | week_names[tmPtr->tm_wday], tmPtr->tm_mday, |
| 111 | month_names[tmPtr->tm_mon], tmPtr->tm_year + 1900, |
| 112 | tmPtr->tm_hour, tmPtr->tm_min, tmPtr->tm_sec); |
| 113 | result = dsPtr->string; |
| 114 | } |
| 115 | |
| 116 | return result; |
| 117 | } |
| 118 | |
| 119 | |
| 120 | /* |
| 121 | *---------------------------------------------------------------------- |
| 122 | * |
| 123 | * Ns_ParseHttpTime -- |
| 124 | * |
| 125 | * Take a time in one of three formats and convert it to a time_t. |
| 126 | * Formats are: "Thursday, 10-Jun-93 01:29:59 GMT", "Thu, 10 |
| 127 | * Jan 1993 01:29:59 GMT", or "Wed Jun 9 01:29:59 1993 GMT" |
| 128 | * |
| 129 | * Results: |
| 130 | * Standard time_t or 0 on error. |
| 131 | * |
| 132 | * Side effects: |
| 133 | * Unable to parse the Unix epoch because result is 0. |
| 134 | * |
| 135 | *---------------------------------------------------------------------- |
| 136 | */ |
| 137 | |
| 138 | time_t |
| 139 | Ns_ParseHttpTime(const char *chars) |
| 140 | { |
| 141 | const char *s; |
| 142 | struct tm timeInfo; |
| 143 | time_t t = 0; |
| 144 | |
| 145 | NS_NONNULL_ASSERT(chars != NULL)((void) (0)); |
| 146 | |
| 147 | /* |
| 148 | * Find the comma after day-of-week |
| 149 | * |
| 150 | * Thursday, 10-Jun-93 01:29:59 GMT |
| 151 | * ^ |
| 152 | * +-- s |
| 153 | * |
| 154 | * Thu, 10 Jan 1993 01:29:59 GMT |
| 155 | * ^ |
| 156 | * +-- s |
| 157 | */ |
| 158 | |
| 159 | s = strchr(chars, INTCHAR(',')((int)((unsigned char)((','))))); |
| 160 | if (s != NULL((void*)0)) { |
| 161 | |
| 162 | /* |
| 163 | * Advance S to the first non-space after the comma |
| 164 | * which should be the first digit of the day. |
| 165 | */ |
| 166 | |
| 167 | s++; |
| 168 | while (*s == ' ') { |
| 169 | s++; |
| 170 | } |
| 171 | |
| 172 | /* |
| 173 | * Figure out which format it is in. If there is a hyphen, then |
| 174 | * it must be the first format. |
| 175 | */ |
| 176 | |
| 177 | if (strchr(s, INTCHAR('-')((int)((unsigned char)(('-'))))) != NULL((void*)0)) { |
| 178 | if (strlen(s) < 18u) { |
| 179 | return 0; |
| 180 | } |
| 181 | |
| 182 | /* |
| 183 | * The format is: |
| 184 | * |
| 185 | * Thursday, 10-Jun-93 01:29:59 GMT |
| 186 | * ^ |
| 187 | * +--s |
| 188 | */ |
| 189 | |
| 190 | timeInfo.tm_mday = MakeNum(s); |
| 191 | timeInfo.tm_mon = MakeMonth(s + 3); |
Duplicate code detected | |
| 192 | timeInfo.tm_year = MakeNum(s + 7); |
| 193 | timeInfo.tm_hour = MakeNum(s + 10); |
| 194 | timeInfo.tm_min = MakeNum(s + 13); |
| 195 | timeInfo.tm_sec = MakeNum(s + 16); |
| 196 | } else { |
| 197 | int century; |
| 198 | if ((int) strlen(s) < 20) { |
| 199 | return 0; |
| 200 | } |
| 201 | |
| 202 | /* |
| 203 | * The format is: |
| 204 | * |
| 205 | * Thu, 10 Jan 1993 01:29:59 GMT |
| 206 | * ^ |
| 207 | * +--s |
| 208 | */ |
| 209 | |
| 210 | timeInfo.tm_mday = MakeNum(s); |
| 211 | timeInfo.tm_mon = MakeMonth(s + 3); |
| 212 | century = ((100 * MakeNum(s + 7)) - 1900); |
| 213 | timeInfo.tm_year = century + MakeNum(s + 9); |
| 214 | timeInfo.tm_hour = MakeNum(s + 12); |
| 215 | timeInfo.tm_min = MakeNum(s + 15); |
| 216 | timeInfo.tm_sec = MakeNum(s + 18); |
| 217 | } |
| 218 | } else { |
| 219 | |
| 220 | /* |
| 221 | * No commas, so it must be the third, fixed field, format: |
| 222 | * |
| 223 | * Wed Jun 9 01:29:59 1993 GMT |
| 224 | * |
| 225 | * Advance s to the first letter of the month. |
| 226 | */ |
| 227 | |
| 228 | s = chars; |
| 229 | while (*s == ' ') { |
| 230 | s++; |
| 231 | } |
| 232 | if ((int) strlen(s) < 24) { |
| 233 | return 0; |
| 234 | } |
| 235 | timeInfo.tm_mday = MakeNum(s + 8); |
| 236 | timeInfo.tm_mon = MakeMonth(s + 4); |
Similar code here | |
| 237 | timeInfo.tm_year = MakeNum(s + 22); |
| 238 | timeInfo.tm_hour = MakeNum(s + 11); |
| 239 | timeInfo.tm_min = MakeNum(s + 14); |
| 240 | timeInfo.tm_sec = MakeNum(s + 17); |
| 241 | } |
| 242 | |
| 243 | /* |
| 244 | * If there are any impossible values, then return 0. |
| 245 | */ |
| 246 | |
| 247 | if (!(timeInfo.tm_sec < 0 || timeInfo.tm_sec > 59 || |
| 248 | timeInfo.tm_min < 0 || timeInfo.tm_min > 59 || |
| 249 | timeInfo.tm_hour < 0 || timeInfo.tm_hour > 23 || |
| 250 | timeInfo.tm_mday < 1 || timeInfo.tm_mday > 31 || |
| 251 | timeInfo.tm_mon < 0 || timeInfo.tm_mon > 11 || |
| 252 | timeInfo.tm_year < 70)) { |
| 253 | |
| 254 | timeInfo.tm_isdst = 0; |
| 255 | #ifdef HAVE_TIMEGM1 |
| 256 | /* |
| 257 | * Initialize the mutex (if this did not happen so far) and |
| 258 | * provide a name for it. |
| 259 | */ |
| 260 | if (lock == NULL((void*)0)) { |
| 261 | Ns_MasterLock(); |
| 262 | if (lock == NULL((void*)0)) { |
| 263 | Ns_MutexInit(&lock); |
| 264 | Ns_MutexSetName2(&lock, "ns:httptime", NULL((void*)0)); |
| 265 | } |
| 266 | Ns_MasterUnlock(); |
| 267 | } |
| 268 | Ns_MutexLock(&lock); |
| 269 | t = timegm(&timeInfo); |
| 270 | Ns_MutexUnlock(&lock); |
| 271 | #else |
| 272 | t = mktime(&timeInfo) - timezone; |
| 273 | #endif |
| 274 | } |
| 275 | return t; |
| 276 | } |
| 277 | |
| 278 | |
| 279 | /* |
| 280 | *---------------------------------------------------------------------- |
| 281 | * |
| 282 | * NsTclParseHttpTimeObjCmd -- |
| 283 | * |
| 284 | * Implements "ns_parsehttptime". |
| 285 | * |
| 286 | * Results: |
| 287 | * Tcl result. |
| 288 | * |
| 289 | * Side effects: |
| 290 | * Day and month names may have capitalization bashed. |
| 291 | * |
| 292 | *---------------------------------------------------------------------- |
| 293 | */ |
| 294 | |
| 295 | int |
| 296 | NsTclParseHttpTimeObjCmd(ClientData UNUSED(clientData)UNUSED_clientData __attribute__((__unused__)), Tcl_Interp *interp, int objc, Tcl_Obj *const* objv) |
| 297 | { |
| 298 | int result = TCL_OK0; |
| 299 | char *timeString; |
| 300 | Ns_ObjvSpec args[] = { |
| 301 | {"httptime", Ns_ObjvString, &timeString, NULL((void*)0)}, |
| 302 | {NULL((void*)0), NULL((void*)0), NULL((void*)0), NULL((void*)0)} |
| 303 | }; |
| 304 | |
| 305 | if (Ns_ParseObjv(NULL((void*)0), args, interp, 1, objc, objv) != NS_OK) { |
| 306 | result = TCL_ERROR1; |
| 307 | |
| 308 | } else { |
| 309 | time_t t = Ns_ParseHttpTime(timeString); |
| 310 | |
| 311 | if (likely(t != 0)(__builtin_expect((t != 0), 1))) { |
| 312 | Tcl_SetObjResult(interp, Tcl_NewWideIntObj(t)); |
| 313 | } else { |
| 314 | Ns_TclPrintfResult(interp, "invalid time: %s", timeString); |
| 315 | result = TCL_ERROR1; |
| 316 | } |
| 317 | |
| 318 | } |
| 319 | |
| 320 | return result; |
| 321 | } |
| 322 | |
| 323 | |
| 324 | /* |
| 325 | *---------------------------------------------------------------------- |
| 326 | * |
| 327 | * NsTclHttpTimeObjCmd -- |
| 328 | * |
| 329 | * Implements "ns_httptime". |
| 330 | * |
| 331 | * Results: |
| 332 | * Tcl result. |
| 333 | * |
| 334 | * Side effects: |
| 335 | * See docs. |
| 336 | * |
| 337 | *---------------------------------------------------------------------- |
| 338 | */ |
| 339 | |
| 340 | int |
| 341 | NsTclHttpTimeObjCmd(ClientData UNUSED(clientData)UNUSED_clientData __attribute__((__unused__)), Tcl_Interp *interp, int objc, Tcl_Obj *const* objv) |
| 342 | { |
| 343 | int result = TCL_OK0, itime = 0; |
| 344 | Ns_ObjvSpec args[] = { |
| 345 | {"time", Ns_ObjvInt, &itime, NULL((void*)0)}, |
| 346 | {NULL((void*)0), NULL((void*)0), NULL((void*)0), NULL((void*)0)} |
| 347 | }; |
| 348 | |
| 349 | if (Ns_ParseObjv(NULL((void*)0), args, interp, 1, objc, objv) != NS_OK) { |
| 350 | result = TCL_ERROR1; |
| 351 | |
| 352 | } else { |
| 353 | Ns_DStringTcl_DString ds; |
| 354 | time_t t = (time_t) itime; |
| 355 | |
| 356 | Ns_DStringInitTcl_DStringInit(&ds); |
| 357 | (void) Ns_HttpTime(&ds, &t); |
| 358 | Tcl_DStringResult(interp, &ds); |
| 359 | } |
| 360 | |
| 361 | return result; |
| 362 | } |
| 363 | |
| 364 | |
| 365 | /* |
| 366 | *---------------------------------------------------------------------- |
| 367 | * |
| 368 | * MakeNum -- |
| 369 | * |
| 370 | * Convert a one or two-digit day into an integer, allowing a |
| 371 | * space in the first position. |
| 372 | * |
| 373 | * Results: |
| 374 | * An integer. |
| 375 | * |
| 376 | * Side effects: |
| 377 | * None. |
| 378 | * |
| 379 | *---------------------------------------------------------------------- |
| 380 | */ |
| 381 | |
| 382 | static int |
| 383 | MakeNum(const char *s) |
| 384 | { |
| 385 | int result; |
| 386 | |
| 387 | NS_NONNULL_ASSERT(s != NULL)((void) (0)); |
| 388 | |
| 389 | if (CHARTYPE(digit, *s)(((*__ctype_b_loc ())[(int) (((int)((unsigned char)(*s))))] & (unsigned short int) _ISdigit)) != 0) { |
| 390 | result = (10 * ((int)UCHAR(*s)((unsigned char)(*s)) - (int)UCHAR('0')((unsigned char)('0')))) + ((int)UCHAR(*(s + 1))((unsigned char)(*(s + 1))) - (int)UCHAR('0')((unsigned char)('0'))); |
| 391 | } else { |
| 392 | result = (int)UCHAR(*(s + 1))((unsigned char)(*(s + 1))) - (int)UCHAR('0')((unsigned char)('0')); |
| 393 | } |
| 394 | return result; |
| 395 | } |
| 396 | |
| 397 | |
| 398 | /* |
| 399 | *---------------------------------------------------------------------- |
| 400 | * |
| 401 | * MakeMonth -- |
| 402 | * |
| 403 | * Convert a three-digit abbreviated month name into a number; |
| 404 | * e.g., Jan=0, Feb=1, etc. |
| 405 | * |
| 406 | * Results: |
| 407 | * An integral month number. |
| 408 | * |
| 409 | * Side effects: |
| 410 | * Changes passed string to camel case. |
| 411 | * |
| 412 | *---------------------------------------------------------------------- |
| 413 | */ |
| 414 | |
| 415 | static int |
| 416 | MakeMonth(const char *s) |
| 417 | { |
| 418 | int i, result = 0; |
| 419 | |
| 420 | NS_NONNULL_ASSERT(s != NULL)((void) (0)); |
| 421 | |
| 422 | /* |
| 423 | * Make sure it is capitalized like this: |
| 424 | * "Jan" |
| 425 | */ |
| 426 | |
| 427 | for (i = 0; i < 12; i++) { |
| 428 | if (strncasecmp(month_names[i], s, 3u) == 0) { |
| 429 | result = i; |
| 430 | break; |
| 431 | } |
| 432 | } |
| 433 | |
| 434 | return result; |
| 435 | } |
| 436 | |
| 437 | /* |
| 438 | * Local Variables: |
| 439 | * mode: c |
| 440 | * c-basic-offset: 4 |
| 441 | * fill-column: 78 |
| 442 | * indent-tabs-mode: nil |
| 443 | * End: |
| 444 | */ |