Mercurial > hg > nginx-quic
view src/stream/ngx_stream.h @ 6272:b6a665bf858a
HTTP/2: fix indirect reprioritization.
Previously, streams that were indirectly reprioritized (either because of
a new exclusive dependency on their parent or because of removal of their
parent from the dependency tree), didn't have their pointer to the parent
node updated.
This broke detection of circular dependencies and, as a result, nginx
worker would crash due to stack overflow whenever such dependency was
introduced.
Found with afl-fuzz.
Signed-off-by: Piotr Sikora <piotrsikora@google.com>
author | Piotr Sikora <piotrsikora@google.com> |
---|---|
date | Thu, 01 Oct 2015 20:25:55 -0700 |
parents | 7565e056fad6 |
children | 8f038068f4bc |
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/* * Copyright (C) Roman Arutyunyan * Copyright (C) Nginx, Inc. */ #ifndef _NGX_STREAM_H_INCLUDED_ #define _NGX_STREAM_H_INCLUDED_ #include <ngx_config.h> #include <ngx_core.h> #if (NGX_STREAM_SSL) #include <ngx_stream_ssl_module.h> #endif typedef struct ngx_stream_session_s ngx_stream_session_t; #include <ngx_stream_upstream.h> #include <ngx_stream_upstream_round_robin.h> typedef struct { void **main_conf; void **srv_conf; } ngx_stream_conf_ctx_t; typedef struct { union { struct sockaddr sockaddr; struct sockaddr_in sockaddr_in; #if (NGX_HAVE_INET6) struct sockaddr_in6 sockaddr_in6; #endif #if (NGX_HAVE_UNIX_DOMAIN) struct sockaddr_un sockaddr_un; #endif u_char sockaddr_data[NGX_SOCKADDRLEN]; } u; socklen_t socklen; /* server ctx */ ngx_stream_conf_ctx_t *ctx; unsigned bind:1; unsigned wildcard:1; #if (NGX_STREAM_SSL) unsigned ssl:1; #endif #if (NGX_HAVE_INET6 && defined IPV6_V6ONLY) unsigned ipv6only:1; #endif #if (NGX_HAVE_REUSEPORT) unsigned reuseport:1; #endif unsigned so_keepalive:2; #if (NGX_HAVE_KEEPALIVE_TUNABLE) int tcp_keepidle; int tcp_keepintvl; int tcp_keepcnt; #endif int backlog; } ngx_stream_listen_t; typedef struct { ngx_stream_conf_ctx_t *ctx; ngx_str_t addr_text; #if (NGX_STREAM_SSL) ngx_uint_t ssl; /* unsigned ssl:1; */ #endif } ngx_stream_addr_conf_t; typedef struct { in_addr_t addr; ngx_stream_addr_conf_t conf; } ngx_stream_in_addr_t; #if (NGX_HAVE_INET6) typedef struct { struct in6_addr addr6; ngx_stream_addr_conf_t conf; } ngx_stream_in6_addr_t; #endif typedef struct { /* ngx_stream_in_addr_t or ngx_stream_in6_addr_t */ void *addrs; ngx_uint_t naddrs; } ngx_stream_port_t; typedef struct { int family; in_port_t port; ngx_array_t addrs; /* array of ngx_stream_conf_addr_t */ } ngx_stream_conf_port_t; typedef struct { ngx_stream_listen_t opt; } ngx_stream_conf_addr_t; typedef ngx_int_t (*ngx_stream_access_pt)(ngx_stream_session_t *s); typedef struct { ngx_array_t servers; /* ngx_stream_core_srv_conf_t */ ngx_array_t listen; /* ngx_stream_listen_t */ ngx_stream_access_pt limit_conn_handler; ngx_stream_access_pt access_handler; } ngx_stream_core_main_conf_t; typedef void (*ngx_stream_handler_pt)(ngx_stream_session_t *s); typedef struct { ngx_stream_handler_pt handler; ngx_stream_conf_ctx_t *ctx; u_char *file_name; ngx_int_t line; ngx_log_t *error_log; ngx_flag_t tcp_nodelay; } ngx_stream_core_srv_conf_t; struct ngx_stream_session_s { uint32_t signature; /* "STRM" */ ngx_connection_t *connection; off_t received; ngx_log_handler_pt log_handler; void **ctx; void **main_conf; void **srv_conf; ngx_stream_upstream_t *upstream; }; typedef struct { ngx_int_t (*postconfiguration)(ngx_conf_t *cf); void *(*create_main_conf)(ngx_conf_t *cf); char *(*init_main_conf)(ngx_conf_t *cf, void *conf); void *(*create_srv_conf)(ngx_conf_t *cf); char *(*merge_srv_conf)(ngx_conf_t *cf, void *prev, void *conf); } ngx_stream_module_t; #define NGX_STREAM_MODULE 0x4d525453 /* "STRM" */ #define NGX_STREAM_MAIN_CONF 0x02000000 #define NGX_STREAM_SRV_CONF 0x04000000 #define NGX_STREAM_UPS_CONF 0x08000000 #define NGX_STREAM_MAIN_CONF_OFFSET offsetof(ngx_stream_conf_ctx_t, main_conf) #define NGX_STREAM_SRV_CONF_OFFSET offsetof(ngx_stream_conf_ctx_t, srv_conf) #define ngx_stream_get_module_ctx(s, module) (s)->ctx[module.ctx_index] #define ngx_stream_set_ctx(s, c, module) s->ctx[module.ctx_index] = c; #define ngx_stream_delete_ctx(s, module) s->ctx[module.ctx_index] = NULL; #define ngx_stream_get_module_main_conf(s, module) \ (s)->main_conf[module.ctx_index] #define ngx_stream_get_module_srv_conf(s, module) \ (s)->srv_conf[module.ctx_index] #define ngx_stream_conf_get_module_main_conf(cf, module) \ ((ngx_stream_conf_ctx_t *) cf->ctx)->main_conf[module.ctx_index] #define ngx_stream_conf_get_module_srv_conf(cf, module) \ ((ngx_stream_conf_ctx_t *) cf->ctx)->srv_conf[module.ctx_index] #define ngx_stream_cycle_get_module_main_conf(cycle, module) \ (cycle->conf_ctx[ngx_stream_module.index] ? \ ((ngx_stream_conf_ctx_t *) cycle->conf_ctx[ngx_stream_module.index]) \ ->main_conf[module.ctx_index]: \ NULL) void ngx_stream_init_connection(ngx_connection_t *c); void ngx_stream_close_connection(ngx_connection_t *c); extern ngx_module_t ngx_stream_module; extern ngx_uint_t ngx_stream_max_module; extern ngx_module_t ngx_stream_core_module; #endif /* _NGX_STREAM_H_INCLUDED_ */