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comparison src/core/ngx_parse.c @ 0:f0b350454894 NGINX_0_1_0

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nginx 0.1.0 *) The first public version.
author Igor Sysoev <http://sysoev.ru>
date Mon, 04 Oct 2004 00:00:00 +0400
parents
children 408f195b3482
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-1:000000000000 0:f0b350454894
1
2 /*
3 * Copyright (C) Igor Sysoev
4 */
5
6
7 #include <ngx_config.h>
8 #include <ngx_core.h>
9
10
11 ngx_int_t ngx_parse_size(ngx_str_t *line)
12 {
13 u_char last;
14 size_t len;
15 ngx_int_t scale, size;
16
17 len = line->len;
18 last = line->data[len - 1];
19
20 switch (last) {
21 case 'K':
22 case 'k':
23 len--;
24 scale = 1024;
25 break;
26
27 case 'M':
28 case 'm':
29 len--;
30 scale = 1024 * 1024;
31 break;
32
33 default:
34 scale = 1;
35 }
36
37 size = ngx_atoi(line->data, len);
38 if (size == NGX_ERROR) {
39 return NGX_ERROR;
40 }
41
42 size *= scale;
43
44 return size;
45 }
46
47
48 ngx_int_t ngx_parse_time(ngx_str_t *line, ngx_int_t sec)
49 {
50 size_t len;
51 u_char *start, last;
52 ngx_int_t value, total, scale;
53 ngx_uint_t max, i;
54 enum {
55 st_start = 0,
56 st_year,
57 st_month,
58 st_week,
59 st_day,
60 st_hour,
61 st_min,
62 st_sec,
63 st_msec,
64 st_last
65 } step;
66
67
68 start = line->data;
69 len = 0;
70 total = 0;
71 step = sec ? st_start : st_month;
72
73 for (i = 0; /* void */ ; i++) {
74
75 if (i < line->len) {
76 if (line->data[i] != ' ') {
77 len++;
78 continue;
79 }
80
81 if (line->data[i] == ' ' && len == 0) {
82 start = &line->data[i + 1];
83 continue;
84 }
85 }
86
87 if (len == 0) {
88 break;
89 }
90
91 last = line->data[i - 1];
92
93 switch (last) {
94 case 'y':
95 if (step > st_start) {
96 return NGX_ERROR;
97 }
98 step = st_year;
99 len--;
100 max = 68;
101 scale = 60 * 60 * 24 * 365;
102 break;
103
104 case 'M':
105 if (step > st_year) {
106 return NGX_ERROR;
107 }
108 step = st_month;
109 len--;
110 max = 828;
111 scale = 60 * 60 * 24 * 30;
112 break;
113
114 case 'w':
115 if (step > st_month) {
116 return NGX_ERROR;
117 }
118 step = st_week;
119 len--;
120 max = 3550;
121 scale = 60 * 60 * 24 * 7;
122 break;
123
124 case 'd':
125 if (step > st_week) {
126 return NGX_ERROR;
127 }
128 step = st_day;
129 len--;
130 max = 24855;
131 scale = 60 * 60 * 24;
132 break;
133
134 case 'h':
135 if (step > st_day) {
136 return NGX_ERROR;
137 }
138 step = st_hour;
139 len--;
140 max = 596523;
141 scale = 60 * 60;
142 break;
143
144 case 'm':
145 if (step > st_hour) {
146 return NGX_ERROR;
147 }
148 step = st_min;
149 len--;
150 max = 35791394;
151 scale = 60;
152 break;
153
154 case 's':
155 len--;
156
157 if (line->data[i - 2] == 'm') {
158 if (sec || step > st_sec) {
159 return NGX_ERROR;
160 }
161 step = st_msec;
162 len--;
163 max = 2147483647;
164 scale = 1;
165 break;
166 }
167
168 if (step > st_min) {
169 return NGX_ERROR;
170 }
171
172 step = st_sec;
173 max = 2147483647;
174 scale = 1;
175 break;
176
177 default:
178 step = st_last;
179 max = 2147483647;
180 scale = 1;
181 }
182
183 value = ngx_atoi(start, len);
184 if (value == NGX_ERROR) {
185 return NGX_ERROR;
186 }
187
188 if (step != st_msec && !sec) {
189 scale *= 1000;
190 max /= 1000;
191 }
192
193 if ((u_int) value > max) {
194 return NGX_PARSE_LARGE_TIME;
195 }
196
197 total += value * scale;
198
199 if ((u_int) total > 2147483647) {
200 return NGX_PARSE_LARGE_TIME;
201 }
202
203 if (i >= line->len) {
204 break;
205 }
206
207 len = 0;
208 start = &line->data[i + 1];
209 }
210
211 return total;
212 }