Mercurial > hg > nginx-quic
view src/http/modules/ngx_http_gzip_static_module.c @ 7374:de50fa05fbeb
Cache: fixed minimum cache keys zone size limit.
Size of a shared memory zones must be at least two pages - one page
for slab allocator internal data, and another page for actual allocations.
Using 8192 instead is wrong, as there are systems with page sizes other
than 4096.
Note well that two pages is usually too low as well. In particular, cache
is likely to use two allocations of different sizes for global structures,
and at least four pages will be needed to properly allocate cache nodes.
Except in a few very special cases, with keys zone of just two pages nginx
won't be able to start. Other uses of shared memory impose a limit
of 8 pages, which provides some room for global allocations. This patch
doesn't try to address this though.
Inspired by ticket #1665.
author | Maxim Dounin <mdounin@mdounin.ru> |
---|---|
date | Wed, 31 Oct 2018 16:49:39 +0300 |
parents | 5116cfea1e9a |
children | d26db4f82d7d |
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/* * Copyright (C) Igor Sysoev * Copyright (C) Nginx, Inc. */ #include <ngx_config.h> #include <ngx_core.h> #include <ngx_http.h> #define NGX_HTTP_GZIP_STATIC_OFF 0 #define NGX_HTTP_GZIP_STATIC_ON 1 #define NGX_HTTP_GZIP_STATIC_ALWAYS 2 typedef struct { ngx_uint_t enable; } ngx_http_gzip_static_conf_t; static ngx_int_t ngx_http_gzip_static_handler(ngx_http_request_t *r); static void *ngx_http_gzip_static_create_conf(ngx_conf_t *cf); static char *ngx_http_gzip_static_merge_conf(ngx_conf_t *cf, void *parent, void *child); static ngx_int_t ngx_http_gzip_static_init(ngx_conf_t *cf); static ngx_conf_enum_t ngx_http_gzip_static[] = { { ngx_string("off"), NGX_HTTP_GZIP_STATIC_OFF }, { ngx_string("on"), NGX_HTTP_GZIP_STATIC_ON }, { ngx_string("always"), NGX_HTTP_GZIP_STATIC_ALWAYS }, { ngx_null_string, 0 } }; static ngx_command_t ngx_http_gzip_static_commands[] = { { ngx_string("gzip_static"), NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, ngx_conf_set_enum_slot, NGX_HTTP_LOC_CONF_OFFSET, offsetof(ngx_http_gzip_static_conf_t, enable), &ngx_http_gzip_static }, ngx_null_command }; static ngx_http_module_t ngx_http_gzip_static_module_ctx = { NULL, /* preconfiguration */ ngx_http_gzip_static_init, /* postconfiguration */ NULL, /* create main configuration */ NULL, /* init main configuration */ NULL, /* create server configuration */ NULL, /* merge server configuration */ ngx_http_gzip_static_create_conf, /* create location configuration */ ngx_http_gzip_static_merge_conf /* merge location configuration */ }; ngx_module_t ngx_http_gzip_static_module = { NGX_MODULE_V1, &ngx_http_gzip_static_module_ctx, /* module context */ ngx_http_gzip_static_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 ngx_int_t ngx_http_gzip_static_handler(ngx_http_request_t *r) { u_char *p; size_t root; ngx_str_t path; ngx_int_t rc; ngx_uint_t level; ngx_log_t *log; ngx_buf_t *b; ngx_chain_t out; ngx_table_elt_t *h; ngx_open_file_info_t of; ngx_http_core_loc_conf_t *clcf; ngx_http_gzip_static_conf_t *gzcf; if (!(r->method & (NGX_HTTP_GET|NGX_HTTP_HEAD))) { return NGX_DECLINED; } if (r->uri.data[r->uri.len - 1] == '/') { return NGX_DECLINED; } gzcf = ngx_http_get_module_loc_conf(r, ngx_http_gzip_static_module); if (gzcf->enable == NGX_HTTP_GZIP_STATIC_OFF) { return NGX_DECLINED; } if (gzcf->enable == NGX_HTTP_GZIP_STATIC_ON) { rc = ngx_http_gzip_ok(r); } else { /* always */ rc = NGX_OK; } clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module); if (!clcf->gzip_vary && rc != NGX_OK) { return NGX_DECLINED; } log = r->connection->log; p = ngx_http_map_uri_to_path(r, &path, &root, sizeof(".gz") - 1); if (p == NULL) { return NGX_HTTP_INTERNAL_SERVER_ERROR; } *p++ = '.'; *p++ = 'g'; *p++ = 'z'; *p = '\0'; path.len = p - path.data; ngx_log_debug1(NGX_LOG_DEBUG_HTTP, log, 0, "http filename: \"%s\"", path.data); ngx_memzero(&of, sizeof(ngx_open_file_info_t)); of.read_ahead = clcf->read_ahead; of.directio = clcf->directio; of.valid = clcf->open_file_cache_valid; of.min_uses = clcf->open_file_cache_min_uses; of.errors = clcf->open_file_cache_errors; of.events = clcf->open_file_cache_events; if (ngx_http_set_disable_symlinks(r, clcf, &path, &of) != NGX_OK) { return NGX_HTTP_INTERNAL_SERVER_ERROR; } if (ngx_open_cached_file(clcf->open_file_cache, &path, &of, r->pool) != NGX_OK) { switch (of.err) { case 0: return NGX_HTTP_INTERNAL_SERVER_ERROR; case NGX_ENOENT: case NGX_ENOTDIR: case NGX_ENAMETOOLONG: return NGX_DECLINED; case NGX_EACCES: #if (NGX_HAVE_OPENAT) case NGX_EMLINK: case NGX_ELOOP: #endif level = NGX_LOG_ERR; break; default: level = NGX_LOG_CRIT; break; } ngx_log_error(level, log, of.err, "%s \"%s\" failed", of.failed, path.data); return NGX_DECLINED; } if (gzcf->enable == NGX_HTTP_GZIP_STATIC_ON) { r->gzip_vary = 1; if (rc != NGX_OK) { return NGX_DECLINED; } } ngx_log_debug1(NGX_LOG_DEBUG_HTTP, log, 0, "http static fd: %d", of.fd); if (of.is_dir) { ngx_log_debug0(NGX_LOG_DEBUG_HTTP, log, 0, "http dir"); return NGX_DECLINED; } #if !(NGX_WIN32) /* the not regular files are probably Unix specific */ if (!of.is_file) { ngx_log_error(NGX_LOG_CRIT, log, 0, "\"%s\" is not a regular file", path.data); return NGX_HTTP_NOT_FOUND; } #endif r->root_tested = !r->error_page; rc = ngx_http_discard_request_body(r); if (rc != NGX_OK) { return rc; } log->action = "sending response to client"; r->headers_out.status = NGX_HTTP_OK; r->headers_out.content_length_n = of.size; r->headers_out.last_modified_time = of.mtime; if (ngx_http_set_etag(r) != NGX_OK) { return NGX_HTTP_INTERNAL_SERVER_ERROR; } if (ngx_http_set_content_type(r) != NGX_OK) { return NGX_HTTP_INTERNAL_SERVER_ERROR; } h = ngx_list_push(&r->headers_out.headers); if (h == NULL) { return NGX_HTTP_INTERNAL_SERVER_ERROR; } h->hash = 1; ngx_str_set(&h->key, "Content-Encoding"); ngx_str_set(&h->value, "gzip"); r->headers_out.content_encoding = h; /* we need to allocate all before the header would be sent */ b = ngx_calloc_buf(r->pool); if (b == NULL) { return NGX_HTTP_INTERNAL_SERVER_ERROR; } b->file = ngx_pcalloc(r->pool, sizeof(ngx_file_t)); if (b->file == NULL) { return NGX_HTTP_INTERNAL_SERVER_ERROR; } rc = ngx_http_send_header(r); if (rc == NGX_ERROR || rc > NGX_OK || r->header_only) { return rc; } b->file_pos = 0; b->file_last = of.size; b->in_file = b->file_last ? 1 : 0; b->last_buf = (r == r->main) ? 1 : 0; b->last_in_chain = 1; b->file->fd = of.fd; b->file->name = path; b->file->log = log; b->file->directio = of.is_directio; out.buf = b; out.next = NULL; return ngx_http_output_filter(r, &out); } static void * ngx_http_gzip_static_create_conf(ngx_conf_t *cf) { ngx_http_gzip_static_conf_t *conf; conf = ngx_palloc(cf->pool, sizeof(ngx_http_gzip_static_conf_t)); if (conf == NULL) { return NULL; } conf->enable = NGX_CONF_UNSET_UINT; return conf; } static char * ngx_http_gzip_static_merge_conf(ngx_conf_t *cf, void *parent, void *child) { ngx_http_gzip_static_conf_t *prev = parent; ngx_http_gzip_static_conf_t *conf = child; ngx_conf_merge_uint_value(conf->enable, prev->enable, NGX_HTTP_GZIP_STATIC_OFF); return NGX_CONF_OK; } static ngx_int_t ngx_http_gzip_static_init(ngx_conf_t *cf) { ngx_http_handler_pt *h; ngx_http_core_main_conf_t *cmcf; cmcf = ngx_http_conf_get_module_main_conf(cf, ngx_http_core_module); h = ngx_array_push(&cmcf->phases[NGX_HTTP_CONTENT_PHASE].handlers); if (h == NULL) { return NGX_ERROR; } *h = ngx_http_gzip_static_handler; return NGX_OK; }