Mercurial > hg > nginx
view src/http/modules/ngx_http_upstream_zone_module.c @ 7686:1f3bf1734a77
Xslt: disabled ranges.
Previously, the document generated by the xslt filter was always fully sent
to client even if a range was requested and response status was 206 with
appropriate Content-Range.
The xslt module is unable to serve a range because of suspending the header
filter chain. By the moment full response xml is buffered by the xslt filter,
range header filter is not called yet, but the range body filter has already
been called and did nothing.
The fix is to disable ranges by resetting the r->allow_ranges flag much like
the image filter that employs a similar technique.
author | Roman Arutyunyan <arut@nginx.com> |
---|---|
date | Wed, 22 Jul 2020 22:16:19 +0300 |
parents | 3b1b81e248bc |
children |
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/* * Copyright (C) Ruslan Ermilov * Copyright (C) Nginx, Inc. */ #include <ngx_config.h> #include <ngx_core.h> #include <ngx_http.h> static char *ngx_http_upstream_zone(ngx_conf_t *cf, ngx_command_t *cmd, void *conf); static ngx_int_t ngx_http_upstream_init_zone(ngx_shm_zone_t *shm_zone, void *data); static ngx_http_upstream_rr_peers_t *ngx_http_upstream_zone_copy_peers( ngx_slab_pool_t *shpool, ngx_http_upstream_srv_conf_t *uscf); static ngx_http_upstream_rr_peer_t *ngx_http_upstream_zone_copy_peer( ngx_http_upstream_rr_peers_t *peers, ngx_http_upstream_rr_peer_t *src); static ngx_command_t ngx_http_upstream_zone_commands[] = { { ngx_string("zone"), NGX_HTTP_UPS_CONF|NGX_CONF_TAKE12, ngx_http_upstream_zone, 0, 0, NULL }, ngx_null_command }; static ngx_http_module_t ngx_http_upstream_zone_module_ctx = { NULL, /* preconfiguration */ NULL, /* postconfiguration */ NULL, /* create main configuration */ NULL, /* init main configuration */ NULL, /* create server configuration */ NULL, /* merge server configuration */ NULL, /* create location configuration */ NULL /* merge location configuration */ }; ngx_module_t ngx_http_upstream_zone_module = { NGX_MODULE_V1, &ngx_http_upstream_zone_module_ctx, /* module context */ ngx_http_upstream_zone_commands, /* module directives */ NGX_HTTP_MODULE, /* module type */ NULL, /* init master */ NULL, /* init module */ NULL, /* init process */ NULL, /* init thread */ NULL, /* exit thread */ NULL, /* exit process */ NULL, /* exit master */ NGX_MODULE_V1_PADDING }; static char * ngx_http_upstream_zone(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) { ssize_t size; ngx_str_t *value; ngx_http_upstream_srv_conf_t *uscf; ngx_http_upstream_main_conf_t *umcf; uscf = ngx_http_conf_get_module_srv_conf(cf, ngx_http_upstream_module); umcf = ngx_http_conf_get_module_main_conf(cf, ngx_http_upstream_module); value = cf->args->elts; if (!value[1].len) { ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, "invalid zone name \"%V\"", &value[1]); return NGX_CONF_ERROR; } if (cf->args->nelts == 3) { size = ngx_parse_size(&value[2]); if (size == NGX_ERROR) { ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, "invalid zone size \"%V\"", &value[2]); return NGX_CONF_ERROR; } if (size < (ssize_t) (8 * ngx_pagesize)) { ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, "zone \"%V\" is too small", &value[1]); return NGX_CONF_ERROR; } } else { size = 0; } uscf->shm_zone = ngx_shared_memory_add(cf, &value[1], size, &ngx_http_upstream_module); if (uscf->shm_zone == NULL) { return NGX_CONF_ERROR; } uscf->shm_zone->init = ngx_http_upstream_init_zone; uscf->shm_zone->data = umcf; uscf->shm_zone->noreuse = 1; return NGX_CONF_OK; } static ngx_int_t ngx_http_upstream_init_zone(ngx_shm_zone_t *shm_zone, void *data) { size_t len; ngx_uint_t i; ngx_slab_pool_t *shpool; ngx_http_upstream_rr_peers_t *peers, **peersp; ngx_http_upstream_srv_conf_t *uscf, **uscfp; ngx_http_upstream_main_conf_t *umcf; shpool = (ngx_slab_pool_t *) shm_zone->shm.addr; umcf = shm_zone->data; uscfp = umcf->upstreams.elts; if (shm_zone->shm.exists) { peers = shpool->data; for (i = 0; i < umcf->upstreams.nelts; i++) { uscf = uscfp[i]; if (uscf->shm_zone != shm_zone) { continue; } uscf->peer.data = peers; peers = peers->zone_next; } return NGX_OK; } len = sizeof(" in upstream zone \"\"") + shm_zone->shm.name.len; shpool->log_ctx = ngx_slab_alloc(shpool, len); if (shpool->log_ctx == NULL) { return NGX_ERROR; } ngx_sprintf(shpool->log_ctx, " in upstream zone \"%V\"%Z", &shm_zone->shm.name); /* copy peers to shared memory */ peersp = (ngx_http_upstream_rr_peers_t **) (void *) &shpool->data; for (i = 0; i < umcf->upstreams.nelts; i++) { uscf = uscfp[i]; if (uscf->shm_zone != shm_zone) { continue; } peers = ngx_http_upstream_zone_copy_peers(shpool, uscf); if (peers == NULL) { return NGX_ERROR; } *peersp = peers; peersp = &peers->zone_next; } return NGX_OK; } static ngx_http_upstream_rr_peers_t * ngx_http_upstream_zone_copy_peers(ngx_slab_pool_t *shpool, ngx_http_upstream_srv_conf_t *uscf) { ngx_str_t *name; ngx_http_upstream_rr_peer_t *peer, **peerp; ngx_http_upstream_rr_peers_t *peers, *backup; peers = ngx_slab_alloc(shpool, sizeof(ngx_http_upstream_rr_peers_t)); if (peers == NULL) { return NULL; } ngx_memcpy(peers, uscf->peer.data, sizeof(ngx_http_upstream_rr_peers_t)); name = ngx_slab_alloc(shpool, sizeof(ngx_str_t)); if (name == NULL) { return NULL; } name->data = ngx_slab_alloc(shpool, peers->name->len); if (name->data == NULL) { return NULL; } ngx_memcpy(name->data, peers->name->data, peers->name->len); name->len = peers->name->len; peers->name = name; peers->shpool = shpool; for (peerp = &peers->peer; *peerp; peerp = &peer->next) { /* pool is unlocked */ peer = ngx_http_upstream_zone_copy_peer(peers, *peerp); if (peer == NULL) { return NULL; } *peerp = peer; } if (peers->next == NULL) { goto done; } backup = ngx_slab_alloc(shpool, sizeof(ngx_http_upstream_rr_peers_t)); if (backup == NULL) { return NULL; } ngx_memcpy(backup, peers->next, sizeof(ngx_http_upstream_rr_peers_t)); backup->name = name; backup->shpool = shpool; for (peerp = &backup->peer; *peerp; peerp = &peer->next) { /* pool is unlocked */ peer = ngx_http_upstream_zone_copy_peer(backup, *peerp); if (peer == NULL) { return NULL; } *peerp = peer; } peers->next = backup; done: uscf->peer.data = peers; return peers; } static ngx_http_upstream_rr_peer_t * ngx_http_upstream_zone_copy_peer(ngx_http_upstream_rr_peers_t *peers, ngx_http_upstream_rr_peer_t *src) { ngx_slab_pool_t *pool; ngx_http_upstream_rr_peer_t *dst; pool = peers->shpool; dst = ngx_slab_calloc_locked(pool, sizeof(ngx_http_upstream_rr_peer_t)); if (dst == NULL) { return NULL; } if (src) { ngx_memcpy(dst, src, sizeof(ngx_http_upstream_rr_peer_t)); dst->sockaddr = NULL; dst->name.data = NULL; dst->server.data = NULL; } dst->sockaddr = ngx_slab_calloc_locked(pool, sizeof(ngx_sockaddr_t)); if (dst->sockaddr == NULL) { goto failed; } dst->name.data = ngx_slab_calloc_locked(pool, NGX_SOCKADDR_STRLEN); if (dst->name.data == NULL) { goto failed; } if (src) { ngx_memcpy(dst->sockaddr, src->sockaddr, src->socklen); ngx_memcpy(dst->name.data, src->name.data, src->name.len); dst->server.data = ngx_slab_alloc_locked(pool, src->server.len); if (dst->server.data == NULL) { goto failed; } ngx_memcpy(dst->server.data, src->server.data, src->server.len); } return dst; failed: if (dst->server.data) { ngx_slab_free_locked(pool, dst->server.data); } if (dst->name.data) { ngx_slab_free_locked(pool, dst->name.data); } if (dst->sockaddr) { ngx_slab_free_locked(pool, dst->sockaddr); } ngx_slab_free_locked(pool, dst); return NULL; }