/* Replacements for routines missing on some systems. Copyright (C) 1996-2005 Free Software Foundation, Inc. This file is part of GNU Wget. GNU Wget is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. GNU Wget is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with Wget; if not, write to the Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. In addition, as a special exception, the Free Software Foundation gives permission to link the code of its release of Wget with the OpenSSL project's "OpenSSL" library (or with modified versions of it that use the same license as the "OpenSSL" library), and distribute the linked executables. You must obey the GNU General Public License in all respects for all of the code used other than "OpenSSL". If you modify this file, you may extend this exception to your version of the file, but you are not obligated to do so. If you do not wish to do so, delete this exception statement from your version. */ #include #include #include #include #include #ifdef HAVE_UNISTD_H # include #endif #include #include "wget.h" /* Some systems lack certain functions normally taken for granted. For example, Windows doesn't have strptime, and some systems don't have a usable fnmatch. This file should contain fallback implementations of such missing functions. It should *not* define new Wget-specific interfaces -- those should be placed in utils.c or elsewhere. */ /* strcasecmp and strncasecmp apparently originated with BSD 4.4. SUSv3 seems to be the only standard out there (that I can find) that requires their existence, so in theory there might be systems still in use that lack them. Note that these don't get defined under Windows because mswindows.h defines them to the equivalent Windows functions stricmp and strnicmp. */ #ifndef HAVE_STRCASECMP /* From GNU libc. */ /* Compare S1 and S2, ignoring case, returning less than, equal to or greater than zero if S1 is lexiographically less than, equal to or greater than S2. */ int strcasecmp (const char *s1, const char *s2) { register const unsigned char *p1 = (const unsigned char *) s1; register const unsigned char *p2 = (const unsigned char *) s2; unsigned char c1, c2; if (p1 == p2) return 0; do { c1 = TOLOWER (*p1++); c2 = TOLOWER (*p2++); if (c1 == '\0') break; } while (c1 == c2); return c1 - c2; } #endif /* not HAVE_STRCASECMP */ #ifndef HAVE_STRNCASECMP /* From GNU libc. */ /* Compare no more than N characters of S1 and S2, ignoring case, returning less than, equal to or greater than zero if S1 is lexicographically less than, equal to or greater than S2. */ int strncasecmp (const char *s1, const char *s2, size_t n) { register const unsigned char *p1 = (const unsigned char *) s1; register const unsigned char *p2 = (const unsigned char *) s2; unsigned char c1, c2; if (p1 == p2 || n == 0) return 0; do { c1 = TOLOWER (*p1++); c2 = TOLOWER (*p2++); if (c1 == '\0' || c1 != c2) return c1 - c2; } while (--n > 0); return c1 - c2; } #endif /* not HAVE_STRNCASECMP */ /* strptime is required by POSIX, but it is missing from Windows, which means we must keep a fallback implementation. It is reportedly missing or broken on many older systems as well. */ #ifndef HAVE_STRPTIME /* From GNU libc 2.1.3. */ /* Ulrich, thanks for helping me out with this! --hniksic */ /* strptime - Convert a string representation of time to a time value. Copyright (C) 1996, 1997, 1998, 1999, 2000 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Ulrich Drepper , 1996. */ /* XXX This version of the implementation is not really complete. Some of the fields cannot add information alone. But if seeing some of them in the same format (such as year, week and weekday) this is enough information for determining the date. */ #ifndef __P # define __P(args) args #endif /* not __P */ #if ! HAVE_LOCALTIME_R && ! defined localtime_r # ifdef _LIBC # define localtime_r __localtime_r # else /* Approximate localtime_r as best we can in its absence. */ # define localtime_r my_localtime_r static struct tm *localtime_r __P ((const time_t *, struct tm *)); static struct tm * localtime_r (t, tp) const time_t *t; struct tm *tp; { struct tm *l = localtime (t); if (! l) return 0; *tp = *l; return tp; } # endif /* ! _LIBC */ #endif /* ! HAVE_LOCALTIME_R && ! defined (localtime_r) */ #define match_char(ch1, ch2) if (ch1 != ch2) return NULL #if defined __GNUC__ && __GNUC__ >= 2 # define match_string(cs1, s2) \ ({ size_t len = strlen (cs1); \ int result = strncasecmp ((cs1), (s2), len) == 0; \ if (result) (s2) += len; \ result; }) #else /* Oh come on. Get a reasonable compiler. */ # define match_string(cs1, s2) \ (strncasecmp ((cs1), (s2), strlen (cs1)) ? 0 : ((s2) += strlen (cs1), 1)) #endif /* We intentionally do not use isdigit() for testing because this will lead to problems with the wide character version. */ #define get_number(from, to, n) \ do { \ int __n = n; \ val = 0; \ while (*rp == ' ') \ ++rp; \ if (*rp < '0' || *rp > '9') \ return NULL; \ do { \ val *= 10; \ val += *rp++ - '0'; \ } while (--__n > 0 && val * 10 <= to && *rp >= '0' && *rp <= '9'); \ if (val < from || val > to) \ return NULL; \ } while (0) #ifdef _NL_CURRENT /* Added check for __GNUC__ extensions here for Wget. --abbotti */ # if defined __GNUC__ && __GNUC__ >= 2 # define get_alt_number(from, to, n) \ ({ \ __label__ do_normal; \ if (*decided != raw) \ { \ const char *alts = _NL_CURRENT (LC_TIME, ALT_DIGITS); \ int __n = n; \ int any = 0; \ while (*rp == ' ') \ ++rp; \ val = 0; \ do { \ val *= 10; \ while (*alts != '\0') \ { \ size_t len = strlen (alts); \ if (strncasecmp (alts, rp, len) == 0) \ break; \ alts += len + 1; \ ++val; \ } \ if (*alts == '\0') \ { \ if (*decided == not && ! any) \ goto do_normal; \ /* If we haven't read anything it's an error. */ \ if (! any) \ return NULL; \ /* Correct the premature multiplication. */ \ val /= 10; \ break; \ } \ else \ *decided = loc; \ } while (--__n > 0 && val * 10 <= to); \ if (val < from || val > to) \ return NULL; \ } \ else \ { \ do_normal: \ get_number (from, to, n); \ } \ 0; \ }) # else # define get_alt_number(from, to, n) \ do { if (*decided != raw) \ { \ const char *alts = _NL_CURRENT (LC_TIME, ALT_DIGITS); \ int __n = n; \ int any = 0; \ while (*rp == ' ') \ ++rp; \ val = 0; \ do { \ val *= 10; \ while (*alts != '\0') \ { \ size_t len = strlen (alts); \ if (strncasecmp (alts, rp, len) == 0) \ break; \ alts += len + 1; \ ++val; \ } \ if (*alts == '\0') \ { \ if (*decided == not && ! any) \ goto do_normal; \ /* If we haven't read anything it's an error. */ \ if (! any) \ return NULL; \ /* Correct the premature multiplication. */ \ val /= 10; \ break; \ } \ else \ *decided = loc; \ } while (--__n > 0 && val * 10 <= to); \ if (val < from || val > to) \ return NULL; \ } \ else \ { \ do_normal: \ get_number (from, to, n); \ } \ } while (0) # endif /* defined __GNUC__ && __GNUC__ >= 2 */ #else # define get_alt_number(from, to, n) \ /* We don't have the alternate representation. */ \ get_number(from, to, n) #endif #define recursive(new_fmt) \ (*(new_fmt) != '\0' \ && (rp = strptime_internal (rp, (new_fmt), tm, decided)) != NULL) #ifdef _LIBC /* This is defined in locale/C-time.c in the GNU libc. */ extern const struct locale_data _nl_C_LC_TIME; extern const unsigned short int __mon_yday[2][13]; # define weekday_name (&_nl_C_LC_TIME.values[_NL_ITEM_INDEX (DAY_1)].string) # define ab_weekday_name \ (&_nl_C_LC_TIME.values[_NL_ITEM_INDEX (ABDAY_1)].string) # define month_name (&_nl_C_LC_TIME.values[_NL_ITEM_INDEX (MON_1)].string) # define ab_month_name (&_nl_C_LC_TIME.values[_NL_ITEM_INDEX (ABMON_1)].string) # define HERE_D_T_FMT (_nl_C_LC_TIME.values[_NL_ITEM_INDEX (D_T_FMT)].string) # define HERE_D_FMT (_nl_C_LC_TIME.values[_NL_ITEM_INDEX (D_FMT)].string) # define HERE_AM_STR (_nl_C_LC_TIME.values[_NL_ITEM_INDEX (AM_STR)].string) # define HERE_PM_STR (_nl_C_LC_TIME.values[_NL_ITEM_INDEX (PM_STR)].string) # define HERE_T_FMT_AMPM \ (_nl_C_LC_TIME.values[_NL_ITEM_INDEX (T_FMT_AMPM)].string) # define HERE_T_FMT (_nl_C_LC_TIME.values[_NL_ITEM_INDEX (T_FMT)].string) # define strncasecmp(s1, s2, n) __strncasecmp (s1, s2, n) #else static char const weekday_name[][10] = { "Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday" }; static char const ab_weekday_name[][4] = { "Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat" }; static char const month_name[][10] = { "January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November", "December" }; static char const ab_month_name[][4] = { "Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec" }; # define HERE_D_T_FMT "%a %b %e %H:%M:%S %Y" # define HERE_D_FMT "%m/%d/%y" # define HERE_AM_STR "AM" # define HERE_PM_STR "PM" # define HERE_T_FMT_AMPM "%I:%M:%S %p" # define HERE_T_FMT "%H:%M:%S" const unsigned short int __mon_yday[2][13]; # ifndef NEED_MON_YDAY # define NEED_MON_YDAY # endif #endif /* Status of lookup: do we use the locale data or the raw data? */ enum locale_status { not, loc, raw }; #ifndef __isleap /* Nonzero if YEAR is a leap year (every 4 years, except every 100th isn't, and every 400th is). */ # define __isleap(year) \ ((year) % 4 == 0 && ((year) % 100 != 0 || (year) % 400 == 0)) #endif /* Compute the day of the week. */ static void day_of_the_week (struct tm *tm) { /* We know that January 1st 1970 was a Thursday (= 4). Compute the the difference between this data in the one on TM and so determine the weekday. */ int corr_year = 1900 + tm->tm_year - (tm->tm_mon < 2); int wday = (-473 + (365 * (tm->tm_year - 70)) + (corr_year / 4) - ((corr_year / 4) / 25) + ((corr_year / 4) % 25 < 0) + (((corr_year / 4) / 25) / 4) + __mon_yday[0][tm->tm_mon] + tm->tm_mday - 1); tm->tm_wday = ((wday % 7) + 7) % 7; } /* Compute the day of the year. */ static void day_of_the_year (struct tm *tm) { tm->tm_yday = (__mon_yday[__isleap (1900 + tm->tm_year)][tm->tm_mon] + (tm->tm_mday - 1)); } static char * #ifdef _LIBC internal_function #endif strptime_internal __P ((const char *buf, const char *format, struct tm *tm, enum locale_status *decided)); static char * #ifdef _LIBC internal_function #endif strptime_internal (rp, fmt, tm, decided) const char *rp; const char *fmt; struct tm *tm; enum locale_status *decided; { #ifdef _NL_CURRENT const char *rp_backup; #endif int cnt; size_t val; int have_I, is_pm; int century, want_century; int have_wday, want_xday; int have_yday; int have_mon, have_mday; have_I = is_pm = 0; century = -1; want_century = 0; have_wday = want_xday = have_yday = have_mon = have_mday = 0; while (*fmt != '\0') { /* A white space in the format string matches 0 more or white space in the input string. */ if (ISSPACE (*fmt)) { while (ISSPACE (*rp)) ++rp; ++fmt; continue; } /* Any character but `%' must be matched by the same character in the iput string. */ if (*fmt != '%') { match_char (*fmt++, *rp++); continue; } ++fmt; #ifndef _NL_CURRENT /* We need this for handling the `E' modifier. */ start_over: #endif #ifdef _NL_CURRENT /* Make back up of current processing pointer. */ rp_backup = rp; #endif switch (*fmt++) { case '%': /* Match the `%' character itself. */ match_char ('%', *rp++); break; case 'a': case 'A': /* Match day of week. */ for (cnt = 0; cnt < 7; ++cnt) { #ifdef _NL_CURRENT if (*decided !=raw) { if (match_string (_NL_CURRENT (LC_TIME, DAY_1 + cnt), rp)) { if (*decided == not && strcmp (_NL_CURRENT (LC_TIME, DAY_1 + cnt), weekday_name[cnt])) *decided = loc; break; } if (match_string (_NL_CURRENT (LC_TIME, ABDAY_1 + cnt), rp)) { if (*decided == not && strcmp (_NL_CURRENT (LC_TIME, ABDAY_1 + cnt), ab_weekday_name[cnt])) *decided = loc; break; } } #endif if (*decided != loc && (match_string (weekday_name[cnt], rp) || match_string (ab_weekday_name[cnt], rp))) { *decided = raw; break; } } if (cnt == 7) /* Does not match a weekday name. */ return NULL; tm->tm_wday = cnt; have_wday = 1; break; case 'b': case 'B': case 'h': /* Match month name. */ for (cnt = 0; cnt < 12; ++cnt) { #ifdef _NL_CURRENT if (*decided !=raw) { if (match_string (_NL_CURRENT (LC_TIME, MON_1 + cnt), rp)) { if (*decided == not && strcmp (_NL_CURRENT (LC_TIME, MON_1 + cnt), month_name[cnt])) *decided = loc; break; } if (match_string (_NL_CURRENT (LC_TIME, ABMON_1 + cnt), rp)) { if (*decided == not && strcmp (_NL_CURRENT (LC_TIME, ABMON_1 + cnt), ab_month_name[cnt])) *decided = loc; break; } } #endif if (match_string (month_name[cnt], rp) || match_string (ab_month_name[cnt], rp)) { *decided = raw; break; } } if (cnt == 12) /* Does not match a month name. */ return NULL; tm->tm_mon = cnt; want_xday = 1; break; case 'c': /* Match locale's date and time format. */ #ifdef _NL_CURRENT if (*decided != raw) { if (!recursive (_NL_CURRENT (LC_TIME, D_T_FMT))) { if (*decided == loc) return NULL; else rp = rp_backup; } else { if (*decided == not && strcmp (_NL_CURRENT (LC_TIME, D_T_FMT), HERE_D_T_FMT)) *decided = loc; want_xday = 1; break; } *decided = raw; } #endif if (!recursive (HERE_D_T_FMT)) return NULL; want_xday = 1; break; case 'C': /* Match century number. */ get_number (0, 99, 2); century = val; want_xday = 1; break; case 'd': case 'e': /* Match day of month. */ get_number (1, 31, 2); tm->tm_mday = val; have_mday = 1; want_xday = 1; break; case 'F': if (!recursive ("%Y-%m-%d")) return NULL; want_xday = 1; break; case 'x': #ifdef _NL_CURRENT if (*decided != raw) { if (!recursive (_NL_CURRENT (LC_TIME, D_FMT))) { if (*decided == loc) return NULL; else rp = rp_backup; } else { if (*decided == not && strcmp (_NL_CURRENT (LC_TIME, D_FMT), HERE_D_FMT)) *decided = loc; want_xday = 1; break; } *decided = raw; } #endif /* Fall through. */ case 'D': /* Match standard day format. */ if (!recursive (HERE_D_FMT)) return NULL; want_xday = 1; break; case 'k': case 'H': /* Match hour in 24-hour clock. */ get_number (0, 23, 2); tm->tm_hour = val; have_I = 0; break; case 'I': /* Match hour in 12-hour clock. */ get_number (1, 12, 2); tm->tm_hour = val % 12; have_I = 1; break; case 'j': /* Match day number of year. */ get_number (1, 366, 3); tm->tm_yday = val - 1; have_yday = 1; break; case 'm': /* Match number of month. */ get_number (1, 12, 2); tm->tm_mon = val - 1; have_mon = 1; want_xday = 1; break; case 'M': /* Match minute. */ get_number (0, 59, 2); tm->tm_min = val; break; case 'n': case 't': /* Match any white space. */ while (ISSPACE (*rp)) ++rp; break; case 'p': /* Match locale's equivalent of AM/PM. */ #ifdef _NL_CURRENT if (*decided != raw) { if (match_string (_NL_CURRENT (LC_TIME, AM_STR), rp)) { if (strcmp (_NL_CURRENT (LC_TIME, AM_STR), HERE_AM_STR)) *decided = loc; break; } if (match_string (_NL_CURRENT (LC_TIME, PM_STR), rp)) { if (strcmp (_NL_CURRENT (LC_TIME, PM_STR), HERE_PM_STR)) *decided = loc; is_pm = 1; break; } *decided = raw; } #endif if (!match_string (HERE_AM_STR, rp)) { if (match_string (HERE_PM_STR, rp)) is_pm = 1; else return NULL; } break; case 'r': #ifdef _NL_CURRENT if (*decided != raw) { if (!recursive (_NL_CURRENT (LC_TIME, T_FMT_AMPM))) { if (*decided == loc) return NULL; else rp = rp_backup; } else { if (*decided == not && strcmp (_NL_CURRENT (LC_TIME, T_FMT_AMPM), HERE_T_FMT_AMPM)) *decided = loc; break; } *decided = raw; } #endif if (!recursive (HERE_T_FMT_AMPM)) return NULL; break; case 'R': if (!recursive ("%H:%M")) return NULL; break; case 's': { /* The number of seconds may be very high so we cannot use the `get_number' macro. Instead read the number character for character and construct the result while doing this. */ time_t secs = 0; if (*rp < '0' || *rp > '9') /* We need at least one digit. */ return NULL; do { secs *= 10; secs += *rp++ - '0'; } while (*rp >= '0' && *rp <= '9'); if (localtime_r (&secs, tm) == NULL) /* Error in function. */ return NULL; } break; case 'S': get_number (0, 61, 2); tm->tm_sec = val; break; case 'X': #ifdef _NL_CURRENT if (*decided != raw) { if (!recursive (_NL_CURRENT (LC_TIME, T_FMT))) { if (*decided == loc) return NULL; else rp = rp_backup; } else { if (strcmp (_NL_CURRENT (LC_TIME, T_FMT), HERE_T_FMT)) *decided = loc; break; } *decided = raw; } #endif /* Fall through. */ case 'T': if (!recursive (HERE_T_FMT)) return NULL; break; case 'u': get_number (1, 7, 1); tm->tm_wday = val % 7; have_wday = 1; break; case 'g': get_number (0, 99, 2); /* XXX This cannot determine any field in TM. */ break; case 'G': if (*rp < '0' || *rp > '9') return NULL; /* XXX Ignore the number since we would need some more information to compute a real date. */ do ++rp; while (*rp >= '0' && *rp <= '9'); break; case 'U': case 'V': case 'W': get_number (0, 53, 2); /* XXX This cannot determine any field in TM without some information. */ break; case 'w': /* Match number of weekday. */ get_number (0, 6, 1); tm->tm_wday = val; have_wday = 1; break; case 'y': /* Match year within century. */ get_number (0, 99, 2); /* The "Year 2000: The Millennium Rollover" paper suggests that values in the range 69-99 refer to the twentieth century. */ tm->tm_year = val >= 69 ? val : val + 100; /* Indicate that we want to use the century, if specified. */ want_century = 1; want_xday = 1; break; case 'Y': /* Match year including century number. */ get_number (0, 9999, 4); tm->tm_year = val - 1900; want_century = 0; want_xday = 1; break; case 'Z': /* XXX How to handle this? */ break; case 'E': #ifdef _NL_CURRENT switch (*fmt++) { case 'c': /* Match locale's alternate date and time format. */ if (*decided != raw) { const char *fmt = _NL_CURRENT (LC_TIME, ERA_D_T_FMT); if (*fmt == '\0') fmt = _NL_CURRENT (LC_TIME, D_T_FMT); if (!recursive (fmt)) { if (*decided == loc) return NULL; else rp = rp_backup; } else { if (strcmp (fmt, HERE_D_T_FMT)) *decided = loc; want_xday = 1; break; } *decided = raw; } /* The C locale has no era information, so use the normal representation. */ if (!recursive (HERE_D_T_FMT)) return NULL; want_xday = 1; break; case 'C': case 'y': case 'Y': /* Match name of base year in locale's alternate representation. */ /* XXX This is currently not implemented. It should use the value _NL_CURRENT (LC_TIME, ERA). */ break; case 'x': if (*decided != raw) { const char *fmt = _NL_CURRENT (LC_TIME, ERA_D_FMT); if (*fmt == '\0') fmt = _NL_CURRENT (LC_TIME, D_FMT); if (!recursive (fmt)) { if (*decided == loc) return NULL; else rp = rp_backup; } else { if (strcmp (fmt, HERE_D_FMT)) *decided = loc; break; } *decided = raw; } if (!recursive (HERE_D_FMT)) return NULL; break; case 'X': if (*decided != raw) { const char *fmt = _NL_CURRENT (LC_TIME, ERA_T_FMT); if (*fmt == '\0') fmt = _NL_CURRENT (LC_TIME, T_FMT); if (!recursive (fmt)) { if (*decided == loc) return NULL; else rp = rp_backup; } else { if (strcmp (fmt, HERE_T_FMT)) *decided = loc; break; } *decided = raw; } if (!recursive (HERE_T_FMT)) return NULL; break; default: return NULL; } break; #else /* We have no information about the era format. Just use the normal format. */ if (*fmt != 'c' && *fmt != 'C' && *fmt != 'y' && *fmt != 'Y' && *fmt != 'x' && *fmt != 'X') /* This is an illegal format. */ return NULL; goto start_over; #endif case 'O': switch (*fmt++) { case 'd': case 'e': /* Match day of month using alternate numeric symbols. */ get_alt_number (1, 31, 2); tm->tm_mday = val; have_mday = 1; want_xday = 1; break; case 'H': /* Match hour in 24-hour clock using alternate numeric symbols. */ get_alt_number (0, 23, 2); tm->tm_hour = val; have_I = 0; break; case 'I': /* Match hour in 12-hour clock using alternate numeric symbols. */ get_alt_number (1, 12, 2); tm->tm_hour = val - 1; have_I = 1; break; case 'm': /* Match month using alternate numeric symbols. */ get_alt_number (1, 12, 2); tm->tm_mon = val - 1; have_mon = 1; want_xday = 1; break; case 'M': /* Match minutes using alternate numeric symbols. */ get_alt_number (0, 59, 2); tm->tm_min = val; break; case 'S': /* Match seconds using alternate numeric symbols. */ get_alt_number (0, 61, 2); tm->tm_sec = val; break; case 'U': case 'V': case 'W': get_alt_number (0, 53, 2); /* XXX This cannot determine any field in TM without further information. */ break; case 'w': /* Match number of weekday using alternate numeric symbols. */ get_alt_number (0, 6, 1); tm->tm_wday = val; have_wday = 1; break; case 'y': /* Match year within century using alternate numeric symbols. */ get_alt_number (0, 99, 2); tm->tm_year = val >= 69 ? val : val + 100; want_xday = 1; break; default: return NULL; } break; default: return NULL; } } if (have_I && is_pm) tm->tm_hour += 12; if (century != -1) { if (want_century) tm->tm_year = tm->tm_year % 100 + (century - 19) * 100; else /* Only the century, but not the year. Strange, but so be it. */ tm->tm_year = (century - 19) * 100; } if (want_xday && !have_wday) { if ( !(have_mon && have_mday) && have_yday) { /* we don't have tm_mon and/or tm_mday, compute them */ int t_mon = 0; while (__mon_yday[__isleap(1900 + tm->tm_year)][t_mon] <= tm->tm_yday) t_mon++; if (!have_mon) tm->tm_mon = t_mon - 1; if (!have_mday) tm->tm_mday = tm->tm_yday - __mon_yday[__isleap(1900 + tm->tm_year)][t_mon - 1] + 1; } day_of_the_week (tm); } if (want_xday && !have_yday) day_of_the_year (tm); return (char *) rp; } char * strptime (buf, format, tm) const char *buf; const char *format; struct tm *tm; { enum locale_status decided; #ifdef _NL_CURRENT decided = not; #else decided = raw; #endif return strptime_internal (buf, format, tm, &decided); } #endif /* not HAVE_STRPTIME */ #ifdef NEED_MON_YDAY const unsigned short int __mon_yday[2][13] = { /* Normal years. */ { 0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334, 365 }, /* Leap years. */ { 0, 31, 60, 91, 121, 152, 182, 213, 244, 274, 305, 335, 366 } }; #endif /* fnmatch is required by POSIX, but we include an implementation for the sake of systems that don't have it, most notably Windows. Some systems do have fnmatch, but Apache's installation process installs its own fnmatch.h (incompatible with the system one!) in a system include directory, effectively rendering fnmatch unusable. This has been fixed with Apache 2, where fnmatch has been moved to apr and given a prefix, but many systems out there are still (as of this writing in 2005) broken and we must cater to them. Additionally, according to some conventional, many historical implementations of fnmatch are buggy and unreliable. If yours is such, undefine SYSTEM_FNMATCH in sysdep.h and tell us about it. */ #ifndef SYSTEM_FNMATCH #define __FNM_FLAGS (FNM_PATHNAME | FNM_NOESCAPE | FNM_PERIOD) /* Match STRING against the filename pattern PATTERN, returning zero if it matches, FNM_NOMATCH if not. This implementation comes from an earlier version of GNU Bash. (It doesn't make sense to update it with a newer version because those versions add a lot of features Wget doesn't use or care about.) */ int fnmatch (const char *pattern, const char *string, int flags) { register const char *p = pattern, *n = string; register char c; if ((flags & ~__FNM_FLAGS) != 0) { errno = EINVAL; return (-1); } while ((c = *p++) != '\0') { switch (c) { case '?': if (*n == '\0') return (FNM_NOMATCH); else if ((flags & FNM_PATHNAME) && *n == '/') return (FNM_NOMATCH); else if ((flags & FNM_PERIOD) && *n == '.' && (n == string || ((flags & FNM_PATHNAME) && n[-1] == '/'))) return (FNM_NOMATCH); break; case '\\': if (!(flags & FNM_NOESCAPE)) c = *p++; if (*n != c) return (FNM_NOMATCH); break; case '*': if ((flags & FNM_PERIOD) && *n == '.' && (n == string || ((flags & FNM_PATHNAME) && n[-1] == '/'))) return (FNM_NOMATCH); for (c = *p++; c == '?' || c == '*'; c = *p++, ++n) if (((flags & FNM_PATHNAME) && *n == '/') || (c == '?' && *n == '\0')) return (FNM_NOMATCH); if (c == '\0') return (0); { char c1 = (!(flags & FNM_NOESCAPE) && c == '\\') ? *p : c; for (--p; *n != '\0'; ++n) if ((c == '[' || *n == c1) && fnmatch (p, n, flags & ~FNM_PERIOD) == 0) return (0); return (FNM_NOMATCH); } case '[': { /* Nonzero if the sense of the character class is inverted. */ register int not; if (*n == '\0') return (FNM_NOMATCH); if ((flags & FNM_PERIOD) && *n == '.' && (n == string || ((flags & FNM_PATHNAME) && n[-1] == '/'))) return (FNM_NOMATCH); /* Make sure there is a closing `]'. If there isn't, the `[' is just a character to be matched. */ { register const char *np; for (np = p; np && *np && *np != ']'; np++); if (np && !*np) { if (*n != '[') return (FNM_NOMATCH); goto next_char; } } not = (*p == '!' || *p == '^'); if (not) ++p; c = *p++; while (1) { register char cstart = c, cend = c; if (!(flags & FNM_NOESCAPE) && c == '\\') cstart = cend = *p++; if (c == '\0') /* [ (unterminated) loses. */ return (FNM_NOMATCH); c = *p++; if ((flags & FNM_PATHNAME) && c == '/') /* [/] can never match. */ return (FNM_NOMATCH); if (c == '-' && *p != ']') { cend = *p++; if (!(flags & FNM_NOESCAPE) && cend == '\\') cend = *p++; if (cend == '\0') return (FNM_NOMATCH); c = *p++; } if (*n >= cstart && *n <= cend) goto matched; if (c == ']') break; } if (!not) return (FNM_NOMATCH); next_char: break; matched: /* Skip the rest of the [...] that already matched. */ while (c != ']') { if (c == '\0') /* [... (unterminated) loses. */ return (FNM_NOMATCH); c = *p++; if (!(flags & FNM_NOESCAPE) && c == '\\') /* 1003.2d11 is unclear if this is right. %%% */ ++p; } if (not) return (FNM_NOMATCH); } break; default: if (c != *n) return (FNM_NOMATCH); } ++n; } if (*n == '\0') return (0); return (FNM_NOMATCH); } #endif /* not SYSTEM_FNMATCH */ #ifndef HAVE_TIMEGM /* timegm is a GNU extension, but lately also available on *BSD and possibly elsewhere. */ /* Inverse of gmtime: converts struct tm to time_t, assuming the data in tm is UTC rather than local timezone. mktime is similar but assumes struct tm, also known as the "broken-down" form of time, is in local time zone. This implementation of timegm uses mktime to make the conversion understanding that an offset will be introduced by the local time assumption. It then measures the introduced offset by applying gmtime to the initial result and applying mktime to the resulting "broken-down" form. The difference between the two mktime results is the measured offset which is then subtracted from the initial mktime result to yield a calendar time which is the value returned. tm_isdst in struct tm is set to 0 to force mktime to introduce a consistent offset (the non DST offset) since tm and tm+o might be on opposite sides of a DST change. Some implementations of mktime return -1 for the nonexistent localtime hour at the beginning of DST. In this event, use mktime(tm - 1hr) + 3600. Schematically mktime(tm) --> t+o gmtime(t+o) --> tm+o mktime(tm+o) --> t+2o t+o - (t+2o - t+o) = t Contributed by Roger Beeman, with the help of Mark Baushke and other experts at CISCO. Further improved by Roger with assistance from Edward J. Sabol based on input by Jamie Zawinski. */ time_t timegm (struct tm *t) { time_t tl, tb; struct tm *tg; tl = mktime (t); if (tl == -1) { t->tm_hour--; tl = mktime (t); if (tl == -1) return -1; /* can't deal with contents of T */ tl += 3600; } tg = gmtime (&tl); tg->tm_isdst = 0; tb = mktime (tg); if (tb == -1) { tg->tm_hour--; tb = mktime (tg); if (tb == -1) return -1; /* can't deal with output from gmtime */ tb += 3600; } return (tl - (tb - tl)); } #endif /* HAVE_TIMEGM */