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nginx / nginx / e9b2cb1b9d286cffa8053e41c87b12ce265c4f25 / . / src / core / ngx_parse.c
blob: 6a1f54bb2fe31049cdcf797794588bbeb295ddd0 [file] [log] [blame]
Igor Sysoev8556e6d2003-10-23 15:54:19 +0000[diff] [blame]1
2#include <ngx_config.h>
3#include <ngx_core.h>
4
5
6int ngx_parse_size(ngx_str_t *line)
7{
Igor Sysoevd9d0ca12003-11-21 06:30:49 +0000[diff] [blame]8 int scale, size;
9 char last;
10 size_t len;
Igor Sysoev8556e6d2003-10-23 15:54:19 +0000[diff] [blame]11
12 len = line->len;
13 last = line->data[len - 1];
14
15 switch (last) {
16 case 'K':
17 case 'k':
18 len--;
19 scale = 1024;
20 break;
21
22 case 'M':
23 case 'm':
24 len--;
25 scale = 1024 * 1024;
26 break;
27
28 default:
29 scale = 1;
30 }
31
32 size = ngx_atoi(line->data, len);
33 if (size == NGX_ERROR) {
34 return NGX_ERROR;
35 }
36
37 size *= scale;
38
39 return size;
40}
41
42
43int ngx_parse_time(ngx_str_t *line, int sec)
44{
Igor Sysoevd9d0ca12003-11-21 06:30:49 +0000[diff] [blame]45 int value, total, scale;
Igor Sysoev8556e6d2003-10-23 15:54:19 +0000[diff] [blame]46 u_int max, i;
Igor Sysoevd9d0ca12003-11-21 06:30:49 +0000[diff] [blame]47 size_t len;
Igor Sysoev8556e6d2003-10-23 15:54:19 +0000[diff] [blame]48 char *start, last;
49 enum {
50 st_start = 0,
51 st_year,
52 st_month,
53 st_week,
54 st_day,
55 st_hour,
56 st_min,
57 st_sec,
58 st_msec,
59 st_last
60 } step;
61
62
63 start = line->data;
64 len = 0;
65 total = 0;
66 step = sec ? st_start : st_month;
67
68 for (i = 0; /* void */ ; i++) {
69
70 if (i < line->len) {
71 if (line->data[i] != ' ') {
72 len++;
73 continue;
74 }
75
76 if (line->data[i] == ' ' && len == 0) {
77 start = &line->data[i + 1];
78 continue;
79 }
80 }
81
82 if (len == 0) {
83 break;
84 }
85
86 last = line->data[i - 1];
87
88 switch (last) {
89 case 'y':
90 if (step > st_start) {
91 return NGX_ERROR;
92 }
93 step = st_year;
94 len--;
95 max = 68;
96 scale = 60 * 60 * 24 * 365;
97 break;
98
99 case 'M':
100 if (step > st_year) {
101 return NGX_ERROR;
102 }
103 step = st_month;
104 len--;
105 max = 828;
106 scale = 60 * 60 * 24 * 30;
107 break;
108
109 case 'w':
110 if (step > st_month) {
111 return NGX_ERROR;
112 }
113 step = st_week;
114 len--;
115 max = 3550;
116 scale = 60 * 60 * 24 * 7;
117 break;
118
119 case 'd':
120 if (step > st_week) {
121 return NGX_ERROR;
122 }
123 step = st_day;
124 len--;
125 max = 24855;
126 scale = 60 * 60 * 24;
127 break;
128
129 case 'h':
130 if (step > st_day) {
131 return NGX_ERROR;
132 }
133 step = st_hour;
134 len--;
135 max = 596523;
136 scale = 60 * 60;
137 break;
138
139 case 'm':
140 if (step > st_hour) {
141 return NGX_ERROR;
142 }
143 step = st_min;
144 len--;
145 max = 35791394;
146 scale = 60;
147 break;
148
149 case 's':
150 len--;
151
152 if (line->data[i - 2] == 'm') {
153 if (sec || step > st_sec) {
154 return NGX_ERROR;
155 }
156 step = st_msec;
157 len--;
158 max = 2147483647;
159 scale = 1;
160 break;
161 }
162
163 if (step > st_min) {
164 return NGX_ERROR;
165 }
166
167 step = st_sec;
168 max = 2147483647;
169 scale = 1;
170 break;
171
172 default:
173 step = st_last;
174 max = 2147483647;
175 scale = 1;
176 }
177
178 value = ngx_atoi(start, len);
179 if (value == NGX_ERROR) {
180 return NGX_ERROR;
181 }
182
183 if (step != st_msec && !sec) {
184 scale *= 1000;
185 max /= 1000;
186 }
187
188 if ((u_int) value > max) {
189 return NGX_PARSE_LARGE_TIME;
190 }
191
192 total += value * scale;
193
194 if ((u_int) total > 2147483647) {
195 return NGX_PARSE_LARGE_TIME;
196 }
197
198 if (i >= line->len) {
199 break;
200 }
201
202 len = 0;
203 start = &line->data[i + 1];
204 }
205
206 return total;
207}