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/*
* Copyright (C) Igor Sysoev
*/
#include <ngx_config.h>
#include <ngx_core.h>
ssize_t
ngx_parse_size(ngx_str_t *line)
{
u_char last;
size_t len;
ssize_t size;
ngx_int_t scale;
len = line->len;
last = line->data[len - 1];
switch (last) {
case 'K':
case 'k':
len--;
scale = 1024;
break;
case 'M':
case 'm':
len--;
scale = 1024 * 1024;
break;
default:
scale = 1;
}
size = ngx_atosz(line->data, len);
if (size == NGX_ERROR) {
return NGX_ERROR;
}
size *= scale;
return size;
}
ngx_int_t
ngx_parse_time(ngx_str_t *line, ngx_int_t sec)
{
size_t len;
u_char *start, last;
ngx_int_t value, total, scale;
ngx_uint_t max, i;
enum {
st_start = 0,
st_year,
st_month,
st_week,
st_day,
st_hour,
st_min,
st_sec,
st_msec,
st_last
} step;
start = line->data;
len = 0;
total = 0;
step = sec ? st_start : st_month;
for (i = 0; /* void */ ; i++) {
if (i < line->len) {
if (line->data[i] != ' ') {
len++;
continue;
}
if (line->data[i] == ' ' && len == 0) {
start = &line->data[i + 1];
continue;
}
}
if (len == 0) {
break;
}
last = line->data[i - 1];
switch (last) {
case 'y':
if (step > st_start) {
return NGX_ERROR;
}
step = st_year;
len--;
max = 68;
scale = 60 * 60 * 24 * 365;
break;
case 'M':
if (step > st_year) {
return NGX_ERROR;
}
step = st_month;
len--;
max = 828;
scale = 60 * 60 * 24 * 30;
break;
case 'w':
if (step > st_month) {
return NGX_ERROR;
}
step = st_week;
len--;
max = 3550;
scale = 60 * 60 * 24 * 7;
break;
case 'd':
if (step > st_week) {
return NGX_ERROR;
}
step = st_day;
len--;
max = 24855;
scale = 60 * 60 * 24;
break;
case 'h':
if (step > st_day) {
return NGX_ERROR;
}
step = st_hour;
len--;
max = 596523;
scale = 60 * 60;
break;
case 'm':
if (step > st_hour) {
return NGX_ERROR;
}
step = st_min;
len--;
max = 35791394;
scale = 60;
break;
case 's':
len--;
if (line->data[i - 2] == 'm') {
if (sec || step > st_sec) {
return NGX_ERROR;
}
step = st_msec;
len--;
max = 2147483647;
scale = 1;
break;
}
if (step > st_min) {
return NGX_ERROR;
}
step = st_sec;
max = 2147483647;
scale = 1;
break;
default:
step = st_last;
max = 2147483647;
scale = 1;
}
value = ngx_atoi(start, len);
if (value == NGX_ERROR) {
return NGX_ERROR;
}
if (step != st_msec && !sec) {
scale *= 1000;
max /= 1000;
}
if ((u_int) value > max) {
return NGX_PARSE_LARGE_TIME;
}
total += value * scale;
if ((u_int) total > 2147483647) {
return NGX_PARSE_LARGE_TIME;
}
if (i >= line->len) {
break;
}
len = 0;
start = &line->data[i + 1];
}
return total;
}