Mercurial > hg > nginx-quic
view src/core/ngx_parse.c @ 5510:3ff29c30effb
SPDY: elimination of r->blocked counter usage for queuing frames.
It was used to prevent destroying of request object when there are unsent
frames in queue for the stream. Since it was incremented for each frame
and is only 8 bits long, so it was not very hard to overflow the counter.
Now the stream->queued counter is checked instead.
author | Valentin Bartenev <vbart@nginx.com> |
---|---|
date | Tue, 14 Jan 2014 16:24:45 +0400 |
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; }