Mercurial > hg > nginx-quic
view src/os/unix/ngx_posix_init.c @ 4162:fb1375e8b68c stable-1.0
Merging r4036, r4055, r4056, r4057, r4058, r4059, r4060, r4061, r4062, r4063,
r4064:
Ranges related fixes:
The "max_ranges" directive.
"max_ranges 0" disables ranges support at all,
"max_ranges 1" allows the single range, etc.
By default number of ranges is unlimited, to be precise, 2^31-1.
If client requests more ranges than "max_ranges" permits,
nginx disables ranges and returns just the source response.
If total size of all ranges is greater than source response size,
then nginx disables ranges and returns just the source response.
This fix should not affect well-behaving applications but will defeat
DoS attempts exploiting malicious byte ranges.
Now unsatisfiable ranges are processed according to RFC 2616.
author | Igor Sysoev <igor@sysoev.ru> |
---|---|
date | Fri, 30 Sep 2011 14:06:08 +0000 |
parents | 8a8eb335313d |
children | d620f497c50f |
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/* * Copyright (C) Igor Sysoev */ #include <ngx_config.h> #include <ngx_core.h> #include <nginx.h> ngx_int_t ngx_ncpu; ngx_int_t ngx_max_sockets; ngx_uint_t ngx_inherited_nonblocking; ngx_uint_t ngx_tcp_nodelay_and_tcp_nopush; struct rlimit rlmt; ngx_os_io_t ngx_os_io = { ngx_unix_recv, ngx_readv_chain, ngx_udp_unix_recv, ngx_unix_send, ngx_writev_chain, 0 }; ngx_int_t ngx_os_init(ngx_log_t *log) { ngx_uint_t n; #if (NGX_HAVE_OS_SPECIFIC_INIT) if (ngx_os_specific_init(log) != NGX_OK) { return NGX_ERROR; } #endif ngx_init_setproctitle(log); ngx_pagesize = getpagesize(); ngx_cacheline_size = NGX_CPU_CACHE_LINE; for (n = ngx_pagesize; n >>= 1; ngx_pagesize_shift++) { /* void */ } if (ngx_ncpu == 0) { ngx_ncpu = 1; } ngx_cpuinfo(); if (getrlimit(RLIMIT_NOFILE, &rlmt) == -1) { ngx_log_error(NGX_LOG_ALERT, log, errno, "getrlimit(RLIMIT_NOFILE) failed)"); return NGX_ERROR; } ngx_max_sockets = (ngx_int_t) rlmt.rlim_cur; #if (NGX_HAVE_INHERITED_NONBLOCK || NGX_HAVE_ACCEPT4) ngx_inherited_nonblocking = 1; #else ngx_inherited_nonblocking = 0; #endif srandom(ngx_time()); return NGX_OK; } void ngx_os_status(ngx_log_t *log) { ngx_log_error(NGX_LOG_NOTICE, log, 0, NGINX_VER); #ifdef NGX_COMPILER ngx_log_error(NGX_LOG_NOTICE, log, 0, "built by " NGX_COMPILER); #endif #if (NGX_HAVE_OS_SPECIFIC_INIT) ngx_os_specific_status(log); #endif ngx_log_error(NGX_LOG_NOTICE, log, 0, "getrlimit(RLIMIT_NOFILE): %r:%r", rlmt.rlim_cur, rlmt.rlim_max); } ngx_int_t ngx_posix_post_conf_init(ngx_log_t *log) { ngx_fd_t pp[2]; if (pipe(pp) == -1) { ngx_log_error(NGX_LOG_EMERG, log, ngx_errno, "pipe() failed"); return NGX_ERROR; } if (dup2(pp[1], STDERR_FILENO) == -1) { ngx_log_error(NGX_LOG_EMERG, log, errno, "dup2(STDERR) failed"); return NGX_ERROR; } if (pp[1] > STDERR_FILENO) { if (close(pp[1]) == -1) { ngx_log_error(NGX_LOG_EMERG, log, errno, "close() failed"); return NGX_ERROR; } } return NGX_OK; }