Mercurial > hg > nginx-quic
view src/core/ngx_parse.c @ 5905:2f7e557eab5b
Cache: proxy_cache_lock_age and friends.
Once this age is reached, the cache lock is discarded and another
request can acquire the lock. Requests which failed to acquire
the lock are not allowed to cache the response.
author | Roman Arutyunyan <arut@nginx.com> |
---|---|
date | Tue, 18 Nov 2014 20:41:12 +0300 |
parents | d620f497c50f |
children | 15a15f6ae3a2 |
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/* * Copyright (C) Igor Sysoev * Copyright (C) Nginx, Inc. */ #include <ngx_config.h> #include <ngx_core.h> ssize_t ngx_parse_size(ngx_str_t *line) { u_char unit; size_t len; ssize_t size; ngx_int_t scale; len = line->len; unit = line->data[len - 1]; switch (unit) { 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; } off_t ngx_parse_offset(ngx_str_t *line) { u_char unit; off_t offset; size_t len; ngx_int_t scale; len = line->len; unit = line->data[len - 1]; switch (unit) { case 'K': case 'k': len--; scale = 1024; break; case 'M': case 'm': len--; scale = 1024 * 1024; break; case 'G': case 'g': len--; scale = 1024 * 1024 * 1024; break; default: scale = 1; } offset = ngx_atoof(line->data, len); if (offset == NGX_ERROR) { return NGX_ERROR; } offset *= scale; return offset; } ngx_int_t ngx_parse_time(ngx_str_t *line, ngx_uint_t is_sec) { u_char *p, *last; ngx_int_t value, total, scale; ngx_uint_t max, valid; enum { st_start = 0, st_year, st_month, st_week, st_day, st_hour, st_min, st_sec, st_msec, st_last } step; valid = 0; value = 0; total = 0; step = is_sec ? st_start : st_month; scale = is_sec ? 1 : 1000; p = line->data; last = p + line->len; while (p < last) { if (*p >= '0' && *p <= '9') { value = value * 10 + (*p++ - '0'); valid = 1; continue; } switch (*p++) { case 'y': if (step > st_start) { return NGX_ERROR; } step = st_year; max = NGX_MAX_INT32_VALUE / (60 * 60 * 24 * 365); scale = 60 * 60 * 24 * 365; break; case 'M': if (step >= st_month) { return NGX_ERROR; } step = st_month; max = NGX_MAX_INT32_VALUE / (60 * 60 * 24 * 30); scale = 60 * 60 * 24 * 30; break; case 'w': if (step >= st_week) { return NGX_ERROR; } step = st_week; max = NGX_MAX_INT32_VALUE / (60 * 60 * 24 * 7); scale = 60 * 60 * 24 * 7; break; case 'd': if (step >= st_day) { return NGX_ERROR; } step = st_day; max = NGX_MAX_INT32_VALUE / (60 * 60 * 24); scale = 60 * 60 * 24; break; case 'h': if (step >= st_hour) { return NGX_ERROR; } step = st_hour; max = NGX_MAX_INT32_VALUE / (60 * 60); scale = 60 * 60; break; case 'm': if (*p == 's') { if (is_sec || step >= st_msec) { return NGX_ERROR; } p++; step = st_msec; max = NGX_MAX_INT32_VALUE; scale = 1; break; } if (step >= st_min) { return NGX_ERROR; } step = st_min; max = NGX_MAX_INT32_VALUE / 60; scale = 60; break; case 's': if (step >= st_sec) { return NGX_ERROR; } step = st_sec; max = NGX_MAX_INT32_VALUE; scale = 1; break; case ' ': if (step >= st_sec) { return NGX_ERROR; } step = st_last; max = NGX_MAX_INT32_VALUE; scale = 1; break; default: return NGX_ERROR; } if (step != st_msec && !is_sec) { scale *= 1000; max /= 1000; } if ((ngx_uint_t) value > max) { return NGX_ERROR; } total += value * scale; if ((ngx_uint_t) total > NGX_MAX_INT32_VALUE) { return NGX_ERROR; } value = 0; scale = is_sec ? 1 : 1000; while (p < last && *p == ' ') { p++; } } if (valid) { return total + value * scale; } return NGX_ERROR; }