2 +----------------------------------------------------------------------+
4 +----------------------------------------------------------------------+
5 | This source file is subject to version 3.0 of the PHP license, that |
6 | is bundled with this package in the file LICENSE, and is available |
7 | through the world-wide-web at http://www.php.net/license/3_0.txt. |
8 | If you did not receive a copy of the PHP license and are unable to |
9 | obtain it through the world-wide-web, please send a note to |
10 | license@php.net so we can mail you a copy immediately. |
11 +----------------------------------------------------------------------+
12 | Copyright (c) 2004-2005 Michael Wallner <mike@php.net> |
13 +----------------------------------------------------------------------+
24 #include "php_http_std_defs.h"
28 static int check_day(char *day
, size_t len
);
29 static int check_month(char *month
);
30 static int check_tzone(char *tzone
);
32 /* {{{ day/month names */
33 static const char *days
[] = {
34 "Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"
36 static const char *wkdays
[] = {
37 "Mon", "Tue", "Wed", "Thu", "Fri", "Sat", "Sun"
39 static const char *weekdays
[] = {
40 "Monday", "Tuesday", "Wednesday",
41 "Thursday", "Friday", "Saturday", "Sunday"
43 static const char *months
[] = {
44 "Jan", "Feb", "Mar", "Apr", "May", "Jun",
45 "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"
53 static const struct time_zone
{
57 {"GMT", 0}, /* Greenwich Mean */
58 {"UTC", 0}, /* Universal (Coordinated) */
59 {"WET", 0}, /* Western European */
60 {"BST", 0 DS
}, /* British Summer */
61 {"WAT", 60}, /* West Africa */
62 {"AST", 240}, /* Atlantic Standard */
63 {"ADT", 240 DS
},/* Atlantic Daylight */
64 {"EST", 300}, /* Eastern Standard */
65 {"EDT", 300 DS
},/* Eastern Daylight */
66 {"CST", 360}, /* Central Standard */
67 {"CDT", 360 DS
},/* Central Daylight */
68 {"MST", 420}, /* Mountain Standard */
69 {"MDT", 420 DS
},/* Mountain Daylight */
70 {"PST", 480}, /* Pacific Standard */
71 {"PDT", 480 DS
},/* Pacific Daylight */
72 {"YST", 540}, /* Yukon Standard */
73 {"YDT", 540 DS
},/* Yukon Daylight */
74 {"HST", 600}, /* Hawaii Standard */
75 {"HDT", 600 DS
},/* Hawaii Daylight */
76 {"CAT", 600}, /* Central Alaska */
77 {"AHST", 600}, /* Alaska-Hawaii Standard */
78 {"NT", 660}, /* Nome */
79 {"IDLW", 720}, /* International Date Line West */
80 {"CET", -60}, /* Central European */
81 {"MET", -60}, /* Middle European */
82 {"MEWT", -60}, /* Middle European Winter */
83 {"MEST", -60 DS
},/* Middle European Summer */
84 {"CEST", -60 DS
},/* Central European Summer */
85 {"MESZ", -60 DS
},/* Middle European Summer */
86 {"FWT", -60}, /* French Winter */
87 {"FST", -60 DS
},/* French Summer */
88 {"EET", -120}, /* Eastern Europe, USSR Zone 1 */
89 {"WAST", -420}, /* West Australian Standard */
90 {"WADT", -420 DS
},/* West Australian Daylight */
91 {"CCT", -480}, /* China Coast, USSR Zone 7 */
92 {"JST", -540}, /* Japan Standard, USSR Zone 8 */
93 {"EAST", -600}, /* Eastern Australian Standard */
94 {"EADT", -600 DS
},/* Eastern Australian Daylight */
95 {"GST", -600}, /* Guam Standard, USSR Zone 9 */
96 {"NZT", -720}, /* New Zealand */
97 {"NZST", -720}, /* New Zealand Standard */
98 {"NZDT", -720 DS
},/* New Zealand Daylight */
99 {"IDLE", -720}, /* International Date Line East */
103 /* {{{ Day/Month/TZ checks for http_parse_date()
104 Originally by libcurl, Copyright (C) 1998 - 2004, Daniel Stenberg, <daniel@haxx.se>, et al. */
105 static int check_day(char *day
, size_t len
)
108 const char * const *check
= (len
> 3) ? &weekdays
[0] : &wkdays
[0];
109 for (i
= 0; i
< 7; i
++) {
110 if (!strcmp(day
, check
[0])) {
118 static int check_month(char *month
)
121 const char * const *check
= &months
[0];
122 for (i
= 0; i
< 12; i
++) {
123 if (!strcmp(month
, check
[0])) {
131 /* return the time zone offset between GMT and the input one, in number
132 of seconds or -1 if the timezone wasn't found/legal */
134 static int check_tzone(char *tzone
)
137 const struct time_zone
*check
= time_zones
;
138 for (i
= 0; i
< sizeof(time_zones
) / sizeof(time_zones
[0]); i
++) {
139 if (!strcmp(tzone
, check
->name
)) {
140 return check
->offset
* 60;
148 /* {{{ char *http_date(time_t) */
149 PHP_HTTP_API
char *_http_date(time_t t TSRMLS_DC
)
151 struct tm
*gmtime
, tmbuf
;
153 if (gmtime
= php_gmtime_r(&t
, &tmbuf
)) {
154 char *date
= ecalloc(1, 31);
156 "%s, %02d %s %04d %02d:%02d:%02d GMT",
157 days
[gmtime
->tm_wday
], gmtime
->tm_mday
,
158 months
[gmtime
->tm_mon
], gmtime
->tm_year
+ 1900,
159 gmtime
->tm_hour
, gmtime
->tm_min
, gmtime
->tm_sec
168 /* {{{ time_t http_parse_date(char *)
169 Originally by libcurl, Copyright (C) 1998 - 2004, Daniel Stenberg, <daniel@haxx.se>, et al. */
170 PHP_HTTP_API
time_t _http_parse_date(const char *date
)
173 int tz_offset
= -1, year
= -1, month
= -1, monthday
= -1, weekday
= -1,
174 hours
= -1, minutes
= -1, seconds
= -1;
176 enum assume_next dignext
= DATE_MDAY
;
177 const char *indate
= date
;
179 int part
= 0; /* max 6 parts */
181 while (*date
&& (part
< 6)) {
184 while (*date
&& !isalnum(*date
)) {
188 if (isalpha(*date
)) {
189 /* a name coming up */
192 sscanf(date
, "%31[A-Za-z]", buf
);
196 weekday
= check_day(buf
, len
);
202 if (!found
&& (month
== -1)) {
203 month
= check_month(buf
);
209 if (!found
&& (tz_offset
== -1)) {
210 /* this just must be a time zone string */
211 tz_offset
= check_tzone(buf
);
212 if (tz_offset
!= -1) {
218 return -1; /* bad string */
222 else if (isdigit(*date
)) {
226 if ((seconds
== -1) &&
227 (3 == sscanf(date
, "%02d:%02d:%02d", &hours
, &minutes
, &seconds
))) {
233 val
= (int) strtol(date
, &end
, 10);
235 if ((tz_offset
== -1) && ((end
- date
) == 4) && (val
< 1300) &&
236 (indate
< date
) && ((date
[-1] == '+' || date
[-1] == '-'))) {
237 /* four digits and a value less than 1300 and it is preceeded with
238 a plus or minus. This is a time zone indication. */
240 tz_offset
= (val
/ 100 * 60 + val
% 100) * 60;
242 /* the + and - prefix indicates the local time compared to GMT,
243 this we need ther reversed math to get what we want */
244 tz_offset
= date
[-1] == '+' ? -tz_offset
: tz_offset
;
247 if (((end
- date
) == 8) && (year
== -1) && (month
== -1) && (monthday
== -1)) {
248 /* 8 digits, no year, month or day yet. This is YYYYMMDD */
251 month
= (val
% 10000) / 100 - 1; /* month is 0 - 11 */
252 monthday
= val
% 100;
255 if (!found
&& (dignext
== DATE_MDAY
) && (monthday
== -1)) {
256 if ((val
> 0) && (val
< 32)) {
263 if (!found
&& (dignext
== DATE_YEAR
) && (year
== -1)) {
267 year
+= year
> 70 ? 1900 : 2000;
286 seconds
= minutes
= hours
= 0; /* no time, make it zero */
289 if ((-1 == monthday
) || (-1 == month
) || (-1 == year
)) {
290 /* lacks vital info, fail */
294 if (sizeof(time_t) < 5) {
295 /* 32 bit time_t can only hold dates to the beginning of 2038 */
304 tm
.tm_mday
= monthday
;
306 tm
.tm_year
= year
- 1900;
313 /* time zone adjust */
315 struct tm
*gmt
, keeptime2
;
319 if(!(gmt
= php_gmtime_r(&t
, &keeptime2
))) {
320 return -1; /* illegal date/time */
325 /* Add the time zone diff (between the given timezone and GMT) and the
326 diff between the local time zone and GMT. */
327 delta
= (tz_offset
!= -1 ? tz_offset
: 0) + (t
- t2
);
329 if((delta
> 0) && (t
+ delta
< t
)) {
330 return -1; /* time_t overflow */
346 * vim600: sw=4 ts=4 fdm=marker