Mercurial > hg > nginx-quic
view src/event/ngx_event_posted.c @ 5584:0251f2f1dc93
Disabled redirects to named locations if URI is not set.
If something like "error_page 400 @name" is used in a configuration,
a request could be passed to a named location without URI set, and this
in turn might result in segmentation faults or other bad effects
as most of the code assumes URI is set.
With this change nginx will catch such configuration problems in
ngx_http_named_location() and will stop request processing if URI
is not set, returning 500.
author | Maxim Dounin <mdounin@mdounin.ru> |
---|---|
date | Thu, 27 Feb 2014 20:36:35 +0400 |
parents | d620f497c50f |
children | 3377f9459e99 |
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/* * Copyright (C) Igor Sysoev * Copyright (C) Nginx, Inc. */ #include <ngx_config.h> #include <ngx_core.h> #include <ngx_event.h> ngx_thread_volatile ngx_event_t *ngx_posted_accept_events; ngx_thread_volatile ngx_event_t *ngx_posted_events; #if (NGX_THREADS) ngx_mutex_t *ngx_posted_events_mutex; #endif void ngx_event_process_posted(ngx_cycle_t *cycle, ngx_thread_volatile ngx_event_t **posted) { ngx_event_t *ev; for ( ;; ) { ev = (ngx_event_t *) *posted; ngx_log_debug1(NGX_LOG_DEBUG_EVENT, cycle->log, 0, "posted event %p", ev); if (ev == NULL) { return; } ngx_delete_posted_event(ev); ev->handler(ev); } } #if (NGX_THREADS) && !(NGX_WIN32) void ngx_wakeup_worker_thread(ngx_cycle_t *cycle) { ngx_int_t i; #if 0 ngx_uint_t busy; ngx_event_t *ev; busy = 1; if (ngx_mutex_lock(ngx_posted_events_mutex) == NGX_ERROR) { return; } for (ev = (ngx_event_t *) ngx_posted_events; ev; ev = ev->next) { if (*(ev->lock) == 0) { busy = 0; break; } } ngx_mutex_unlock(ngx_posted_events_mutex); if (busy) { return; } #endif for (i = 0; i < ngx_threads_n; i++) { if (ngx_threads[i].state == NGX_THREAD_FREE) { ngx_cond_signal(ngx_threads[i].cv); return; } } } ngx_int_t ngx_event_thread_process_posted(ngx_cycle_t *cycle) { ngx_event_t *ev; for ( ;; ) { ev = (ngx_event_t *) ngx_posted_events; for ( ;; ) { ngx_log_debug1(NGX_LOG_DEBUG_EVENT, cycle->log, 0, "posted event %p", ev); if (ev == NULL) { return NGX_OK; } if (ngx_trylock(ev->lock) == 0) { ngx_log_debug1(NGX_LOG_DEBUG_EVENT, cycle->log, 0, "posted event %p is busy", ev); ev = ev->next; continue; } if (ev->lock != ev->own_lock) { if (*(ev->own_lock)) { ngx_log_error(NGX_LOG_ALERT, cycle->log, 0, "the own lock of the posted event %p is busy", ev); ngx_unlock(ev->lock); ev = ev->next; continue; } *(ev->own_lock) = 1; } ngx_delete_posted_event(ev); ev->locked = 1; ev->ready |= ev->posted_ready; ev->timedout |= ev->posted_timedout; ev->pending_eof |= ev->posted_eof; #if (NGX_HAVE_KQUEUE) ev->kq_errno |= ev->posted_errno; #endif if (ev->posted_available) { ev->available = ev->posted_available; } ev->posted_ready = 0; ev->posted_timedout = 0; ev->posted_eof = 0; #if (NGX_HAVE_KQUEUE) ev->posted_errno = 0; #endif ev->posted_available = 0; ngx_mutex_unlock(ngx_posted_events_mutex); ev->handler(ev); ngx_mutex_lock(ngx_posted_events_mutex); if (ev->locked) { ngx_unlock(ev->lock); if (ev->lock != ev->own_lock) { ngx_unlock(ev->own_lock); } } ngx_log_debug1(NGX_LOG_DEBUG_EVENT, cycle->log, 0, "posted event %p is done", ev); break; } } } #else void ngx_wakeup_worker_thread(ngx_cycle_t *cycle) { } #endif