Mercurial > hg > nginx
view src/core/ngx_parse.c @ 6520:9070ba416284
HTTP/2: send the output queue after emitting WINDOW_UPDATE.
The WINDOW_UPDATE frame could be left in the output queue for an indefinite
period of time resulting in the request timeout.
This might happen if reading of the body was triggered by an event unrelated
to client connection, e.g. by the limit_req timer.
author | Valentin Bartenev <vbart@nginx.com> |
---|---|
date | Tue, 19 Apr 2016 17:38:49 +0300 |
parents | 4ccb37b04454 |
children | 87cf6ddb41c2 |
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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, scale, max; len = line->len; unit = line->data[len - 1]; switch (unit) { case 'K': case 'k': len--; max = NGX_MAX_SIZE_T_VALUE / 1024; scale = 1024; break; case 'M': case 'm': len--; max = NGX_MAX_SIZE_T_VALUE / (1024 * 1024); scale = 1024 * 1024; break; default: max = NGX_MAX_SIZE_T_VALUE; scale = 1; } size = ngx_atosz(line->data, len); if (size == NGX_ERROR || size > max) { return NGX_ERROR; } size *= scale; return size; } off_t ngx_parse_offset(ngx_str_t *line) { u_char unit; off_t offset, scale, max; size_t len; len = line->len; unit = line->data[len - 1]; switch (unit) { case 'K': case 'k': len--; max = NGX_MAX_OFF_T_VALUE / 1024; scale = 1024; break; case 'M': case 'm': len--; max = NGX_MAX_OFF_T_VALUE / (1024 * 1024); scale = 1024 * 1024; break; case 'G': case 'g': len--; max = NGX_MAX_OFF_T_VALUE / (1024 * 1024 * 1024); scale = 1024 * 1024 * 1024; break; default: max = NGX_MAX_OFF_T_VALUE; scale = 1; } offset = ngx_atoof(line->data, len); if (offset == NGX_ERROR || offset > max) { 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_int_t max, cutoff, cutlim; ngx_uint_t 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; cutoff = NGX_MAX_INT_T_VALUE / 10; cutlim = NGX_MAX_INT_T_VALUE % 10; step = is_sec ? st_start : st_month; p = line->data; last = p + line->len; while (p < last) { if (*p >= '0' && *p <= '9') { if (value >= cutoff && (value > cutoff || *p - '0' > cutlim)) { return NGX_ERROR; } 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_INT_T_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_INT_T_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_INT_T_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_INT_T_VALUE / (60 * 60 * 24); scale = 60 * 60 * 24; break; case 'h': if (step >= st_hour) { return NGX_ERROR; } step = st_hour; max = NGX_MAX_INT_T_VALUE / (60 * 60); scale = 60 * 60; break; case 'm': if (p < last && *p == 's') { if (is_sec || step >= st_msec) { return NGX_ERROR; } p++; step = st_msec; max = NGX_MAX_INT_T_VALUE; scale = 1; break; } if (step >= st_min) { return NGX_ERROR; } step = st_min; max = NGX_MAX_INT_T_VALUE / 60; scale = 60; break; case 's': if (step >= st_sec) { return NGX_ERROR; } step = st_sec; max = NGX_MAX_INT_T_VALUE; scale = 1; break; case ' ': if (step >= st_sec) { return NGX_ERROR; } step = st_last; max = NGX_MAX_INT_T_VALUE; scale = 1; break; default: return NGX_ERROR; } if (step != st_msec && !is_sec) { scale *= 1000; max /= 1000; } if (value > max) { return NGX_ERROR; } value *= scale; if (total > NGX_MAX_INT_T_VALUE - value) { return NGX_ERROR; } total += value; value = 0; while (p < last && *p == ' ') { p++; } } if (!valid) { return NGX_ERROR; } if (!is_sec) { if (value > NGX_MAX_INT_T_VALUE / 1000) { return NGX_ERROR; } value *= 1000; } if (total > NGX_MAX_INT_T_VALUE - value) { return NGX_ERROR; } return total + value; }