Mercurial > hg > nginx-quic
comparison src/http/ngx_http_parse_time.c @ 25:a8b156554dfe
nginx-0.0.1-2002-12-11-19:57:54 import
author | Igor Sysoev <igor@sysoev.ru> |
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date | Wed, 11 Dec 2002 16:57:54 +0000 |
parents | 77c7629a2627 |
children | 53cb81681040 |
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24:77c7629a2627 | 25:a8b156554dfe |
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1 | 1 |
2 time_t ngx_http_parse_time() | 2 #include <time.h> |
3 | |
4 #define NGX_ERROR -1 | |
5 | |
6 static int mday[] = { 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 }; | |
7 | |
8 time_t ngx_http_parse_time(char *value, size_t len) | |
3 { | 9 { |
10 char *p, *end; | |
11 int day, month, year, hour, min, sec; | |
4 enum { | 12 enum { |
5 sw_start = 0, | 13 no = 0, |
6 } state; | 14 rfc822, /* Tue 10 Nov 2002 23:50:13 */ |
7 | 15 rfc850, /* Tuesday, 10-Dec-02 23:50:13 */ |
8 state = sw_start; | 16 isoc /* Tue Dec 10 23:50:13 2002 */ |
9 | 17 } fmt; |
10 while () { | 18 |
11 switch (state) { | 19 end = value + len; |
12 | 20 |
13 case sw_start: | 21 for (p = value; p < end; p++) { |
14 if (ch == ' ') { | 22 if (*p == ',') |
15 ansi = 1; | |
16 state = sw_month; | |
17 | |
18 } else if (ch == ',') | |
19 state = sw_day_first_digit; | |
20 | |
21 break; | 23 break; |
22 | 24 |
23 case sw_day_first_digit: | 25 if (*p == ' ') { |
24 if (ch == ' ') | 26 fmt = isoc; |
25 break; | 27 break; |
26 | |
27 if (ch >= '0' && ch <= '9') { | |
28 day = ch - '0'; | |
29 state = sw_day; | |
30 break; | |
31 | |
32 } | |
33 | |
34 return NGX_ERROR; | |
35 | |
36 case sw_day: | |
37 if (ansi && ch == ' ') { | |
38 state = sw_hour_first_digit; | |
39 break; | |
40 } | |
41 | |
42 if (ch >= '0' && ch <= '9') { | |
43 day = ch - '0'; | |
44 state = ansi ? sw_space_before_hour : sw_before_month; | |
45 break; | |
46 } | |
47 | |
48 return NGX_ERROR; | |
49 | |
50 case sw_before_month: | |
51 if (ch == ' ') { | |
52 rfc822 = 1; | |
53 } | |
54 | |
55 if (ch == '-') { | |
56 rfc850 = 1; | |
57 } | |
58 | |
59 case sw_space_before_hour: | |
60 | |
61 | |
62 } | 28 } |
63 } | 29 } |
30 | |
31 for (p++; p < end; p++) | |
32 if (*p != ' ') | |
33 break; | |
34 | |
35 if (end - p < 18) | |
36 return NGX_ERROR; | |
37 | |
38 if (fmt != isoc) { | |
39 if (*p < '0' || *p > '9' || *(p + 1) < '0' || *(p + 1) > '9') | |
40 return NGX_ERROR; | |
41 | |
42 day = (*p - '0') * 10 + *(p + 1) - '0'; | |
43 p += 2; | |
44 | |
45 if (*p == ' ') { | |
46 if (end - p < 18) | |
47 return NGX_ERROR; | |
48 fmt = rfc822; | |
49 | |
50 } else if (*p == '-') { | |
51 fmt = rfc850; | |
52 | |
53 } else { | |
54 return NGX_ERROR; | |
55 } | |
56 | |
57 p++; | |
58 } | |
59 | |
60 switch (*p) { | |
61 | |
62 case 'J': | |
63 month = *(p + 1) == 'a' ? 0 : *(p + 2) == 'n' ? 5 : 6; | |
64 break; | |
65 | |
66 case 'F': | |
67 month = 1; | |
68 break; | |
69 | |
70 case 'M': | |
71 month = *(p + 2) == 'r' ? 2 : 4; | |
72 break; | |
73 | |
74 case 'A': | |
75 month = *(p + 1) == 'p' ? 3 : 7; | |
76 break; | |
77 | |
78 case 'S': | |
79 month = 8; | |
80 break; | |
81 | |
82 case 'O': | |
83 month = 9; | |
84 break; | |
85 | |
86 case 'N': | |
87 month = 10; | |
88 break; | |
89 | |
90 case 'D': | |
91 month = 11; | |
92 break; | |
93 | |
94 default: | |
95 return NGX_ERROR; | |
96 } | |
97 | |
98 p += 3; | |
99 | |
100 if ((fmt == rfc822 && *p != ' ') || (fmt == rfc850 && *p != '-')) | |
101 return NGX_ERROR; | |
102 | |
103 p++; | |
104 | |
105 if (fmt == rfc822) { | |
106 if (*p < '0' || *p > '9' || *(p + 1) < '0' || *(p + 1) > '9' | |
107 || *(p + 2) < '0' || *(p + 2) > '9' | |
108 || *(p + 3) < '0' || *(p + 3) > '9') | |
109 return NGX_ERROR; | |
110 | |
111 year = (*p - '0') * 1000 + (*(p + 1) - '0') * 100 | |
112 + (*(p + 2) - '0') * 10 + *(p + 3) - '0'; | |
113 p += 4; | |
114 | |
115 } else if (fmt == rfc850) { | |
116 if (*p < '0' || *p > '9' || *(p + 1) < '0' || *(p + 1) > '9') | |
117 return NGX_ERROR; | |
118 | |
119 year = (*p - '0') * 10 + *(p + 1) - '0'; | |
120 year += (year < 70) ? 2000 : 1900; | |
121 p += 2; | |
122 } | |
123 | |
124 if (fmt == isoc) { | |
125 if (*p == ' ') | |
126 p++; | |
127 | |
128 if (*p < '0' || *p > '9') | |
129 return NGX_ERROR; | |
130 | |
131 day = *p++ - '0'; | |
132 | |
133 if (*p != ' ') { | |
134 if (*p < '0' || *p > '9') | |
135 return NGX_ERROR; | |
136 | |
137 day = day * 10 + *p++ - '0'; | |
138 } | |
139 | |
140 if (end - p < 14) | |
141 return NGX_ERROR; | |
142 } | |
143 | |
144 if (*p++ != ' ') | |
145 return NGX_ERROR; | |
146 | |
147 if (*p < '0' || *p > '9' || *(p + 1) < '0' || *(p + 1) > '9') | |
148 return NGX_ERROR; | |
149 | |
150 hour = (*p - '0') * 10 + *(p + 1) - '0'; | |
151 p += 2; | |
152 | |
153 if (*p++ != ':') | |
154 return NGX_ERROR; | |
155 | |
156 if (*p < '0' || *p > '9' || *(p + 1) < '0' || *(p + 1) > '9') | |
157 return NGX_ERROR; | |
158 | |
159 min = (*p - '0') * 10 + *(p + 1) - '0'; | |
160 p += 2; | |
161 | |
162 if (*p++ != ':') | |
163 return NGX_ERROR; | |
164 | |
165 if (*p < '0' || *p > '9' || *(p + 1) < '0' || *(p + 1) > '9') | |
166 return NGX_ERROR; | |
167 | |
168 sec = (*p - '0') * 10 + *(p + 1) - '0'; | |
169 | |
170 if (fmt == isoc) { | |
171 p += 2; | |
172 | |
173 if (*p++ != ' ') | |
174 return NGX_ERROR; | |
175 | |
176 if (*p < '0' || *p > '9' || *(p + 1) < '0' || *(p + 1) > '9' | |
177 || *(p + 2) < '0' || *(p + 2) > '9' | |
178 || *(p + 3) < '0' || *(p + 3) > '9') | |
179 return NGX_ERROR; | |
180 | |
181 year = (*p - '0') * 1000 + (*(p + 1) - '0') * 100 | |
182 + (*(p + 2) - '0') * 10 + *(p + 3) - '0'; | |
183 } | |
184 | |
185 printf("%d.%d.%d %d:%d:%d\n", day, month + 1, year, hour, min, sec); | |
186 | |
187 if (hour > 23 || min > 60 || sec > 60) | |
188 return NGX_ERROR; | |
189 | |
190 if (day == 29 && month == 1) { | |
191 if ((year & 3) || ((year % 100 == 0) && (year % 400) != 0)) | |
192 return NGX_ERROR; | |
193 | |
194 } else if (day > mday[month]) | |
195 return NGX_ERROR; | |
196 } | |
197 | |
198 if (sizeof(time_t) <= 4 && year >= 2038) | |
199 return NGX_ERROR; | |
200 | |
201 if (--month <= 0) { | |
202 month += 12; | |
203 year -= 1; | |
204 } | |
205 | |
206 return year / 4 - year / 100 + year / 400 | |
207 + 367 * month / 12 + day + year * 365 - 719499; | |
64 } | 208 } |
209 | |
210 char zero[] = "Sun, 01 Jan 1970 08:49:30"; | |
211 char one[] = "Sunday, 11-Dec-02 08:49:30"; | |
212 char two[] = "Sun Mar 1 08:49:37 2000"; | |
213 char thr[] = "Sun Dec 11 08:49:37 2002"; | |
214 | |
215 main() | |
216 { | |
217 int rc; | |
218 | |
219 rc = ngx_http_parse_time(zero, sizeof(zero) - 1); | |
220 printf("rc: %d\n", rc); | |
221 | |
222 rc = ngx_http_parse_time(one, sizeof(one) - 1); | |
223 printf("rc: %d\n", rc); | |
224 | |
225 rc = ngx_http_parse_time(two, sizeof(two) - 1); | |
226 printf("rc: %d\n", rc); | |
227 | |
228 rc = ngx_http_parse_time(thr, sizeof(thr) - 1); | |
229 printf("rc: %d\n", rc); | |
230 } |