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86aee85d2e
With "always" gzip static returns gzipped content in all cases, without checking if client supports it. It is useful if there are no uncompressed files on disk anyway.
334 lines
8.3 KiB
C
334 lines
8.3 KiB
C
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/*
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* Copyright (C) Igor Sysoev
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* Copyright (C) Nginx, Inc.
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*/
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#include <ngx_config.h>
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#include <ngx_core.h>
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#include <ngx_http.h>
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#define NGX_HTTP_GZIP_STATIC_OFF 0
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#define NGX_HTTP_GZIP_STATIC_ON 1
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#define NGX_HTTP_GZIP_STATIC_ALWAYS 2
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typedef struct {
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ngx_uint_t enable;
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} ngx_http_gzip_static_conf_t;
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static ngx_int_t ngx_http_gzip_static_handler(ngx_http_request_t *r);
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static void *ngx_http_gzip_static_create_conf(ngx_conf_t *cf);
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static char *ngx_http_gzip_static_merge_conf(ngx_conf_t *cf, void *parent,
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void *child);
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static ngx_int_t ngx_http_gzip_static_init(ngx_conf_t *cf);
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static ngx_conf_enum_t ngx_http_gzip_static[] = {
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{ ngx_string("off"), NGX_HTTP_GZIP_STATIC_OFF },
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{ ngx_string("on"), NGX_HTTP_GZIP_STATIC_ON },
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{ ngx_string("always"), NGX_HTTP_GZIP_STATIC_ALWAYS },
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{ ngx_null_string, 0 }
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};
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static ngx_command_t ngx_http_gzip_static_commands[] = {
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{ ngx_string("gzip_static"),
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NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_FLAG,
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ngx_conf_set_enum_slot,
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NGX_HTTP_LOC_CONF_OFFSET,
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offsetof(ngx_http_gzip_static_conf_t, enable),
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&ngx_http_gzip_static },
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ngx_null_command
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};
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ngx_http_module_t ngx_http_gzip_static_module_ctx = {
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NULL, /* preconfiguration */
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ngx_http_gzip_static_init, /* postconfiguration */
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NULL, /* create main configuration */
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NULL, /* init main configuration */
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NULL, /* create server configuration */
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NULL, /* merge server configuration */
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ngx_http_gzip_static_create_conf, /* create location configuration */
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ngx_http_gzip_static_merge_conf /* merge location configuration */
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};
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ngx_module_t ngx_http_gzip_static_module = {
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NGX_MODULE_V1,
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&ngx_http_gzip_static_module_ctx, /* module context */
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ngx_http_gzip_static_commands, /* module directives */
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NGX_HTTP_MODULE, /* module type */
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NULL, /* init master */
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NULL, /* init module */
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NULL, /* init process */
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NULL, /* init thread */
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NULL, /* exit thread */
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NULL, /* exit process */
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NULL, /* exit master */
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NGX_MODULE_V1_PADDING
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};
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static ngx_int_t
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ngx_http_gzip_static_handler(ngx_http_request_t *r)
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{
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u_char *p;
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size_t root;
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ngx_str_t path;
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ngx_int_t rc;
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ngx_uint_t level;
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ngx_log_t *log;
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ngx_buf_t *b;
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ngx_chain_t out;
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ngx_table_elt_t *h;
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ngx_open_file_info_t of;
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ngx_http_core_loc_conf_t *clcf;
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ngx_http_gzip_static_conf_t *gzcf;
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if (!(r->method & (NGX_HTTP_GET|NGX_HTTP_HEAD))) {
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return NGX_DECLINED;
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}
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if (r->uri.data[r->uri.len - 1] == '/') {
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return NGX_DECLINED;
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}
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gzcf = ngx_http_get_module_loc_conf(r, ngx_http_gzip_static_module);
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if (gzcf->enable == NGX_HTTP_GZIP_STATIC_OFF) {
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return NGX_DECLINED;
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}
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if (gzcf->enable == NGX_HTTP_GZIP_STATIC_ON) {
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rc = ngx_http_gzip_ok(r);
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} else {
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/* always */
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rc = NGX_OK;
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}
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clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
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if (!clcf->gzip_vary && rc != NGX_OK) {
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return NGX_DECLINED;
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}
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log = r->connection->log;
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p = ngx_http_map_uri_to_path(r, &path, &root, sizeof(".gz") - 1);
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if (p == NULL) {
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return NGX_HTTP_INTERNAL_SERVER_ERROR;
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}
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*p++ = '.';
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*p++ = 'g';
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*p++ = 'z';
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*p = '\0';
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path.len = p - path.data;
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ngx_log_debug1(NGX_LOG_DEBUG_HTTP, log, 0,
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"http filename: \"%s\"", path.data);
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ngx_memzero(&of, sizeof(ngx_open_file_info_t));
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of.read_ahead = clcf->read_ahead;
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of.directio = clcf->directio;
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of.valid = clcf->open_file_cache_valid;
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of.min_uses = clcf->open_file_cache_min_uses;
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of.errors = clcf->open_file_cache_errors;
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of.events = clcf->open_file_cache_events;
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if (ngx_http_set_disable_symlinks(r, clcf, &path, &of) != NGX_OK) {
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return NGX_HTTP_INTERNAL_SERVER_ERROR;
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}
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if (ngx_open_cached_file(clcf->open_file_cache, &path, &of, r->pool)
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!= NGX_OK)
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{
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switch (of.err) {
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case 0:
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return NGX_HTTP_INTERNAL_SERVER_ERROR;
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case NGX_ENOENT:
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case NGX_ENOTDIR:
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case NGX_ENAMETOOLONG:
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return NGX_DECLINED;
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case NGX_EACCES:
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#if (NGX_HAVE_OPENAT)
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case NGX_EMLINK:
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case NGX_ELOOP:
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#endif
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level = NGX_LOG_ERR;
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break;
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default:
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level = NGX_LOG_CRIT;
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break;
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}
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ngx_log_error(level, log, of.err,
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"%s \"%s\" failed", of.failed, path.data);
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return NGX_DECLINED;
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}
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if (gzcf->enable == NGX_HTTP_GZIP_STATIC_ON) {
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r->gzip_vary = 1;
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if (rc != NGX_OK) {
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return NGX_DECLINED;
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}
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}
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ngx_log_debug1(NGX_LOG_DEBUG_HTTP, log, 0, "http static fd: %d", of.fd);
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if (of.is_dir) {
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ngx_log_debug0(NGX_LOG_DEBUG_HTTP, log, 0, "http dir");
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return NGX_DECLINED;
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}
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#if !(NGX_WIN32) /* the not regular files are probably Unix specific */
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if (!of.is_file) {
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ngx_log_error(NGX_LOG_CRIT, log, 0,
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"\"%s\" is not a regular file", path.data);
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return NGX_HTTP_NOT_FOUND;
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}
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#endif
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r->root_tested = !r->error_page;
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rc = ngx_http_discard_request_body(r);
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if (rc != NGX_OK) {
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return rc;
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}
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log->action = "sending response to client";
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r->headers_out.status = NGX_HTTP_OK;
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r->headers_out.content_length_n = of.size;
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r->headers_out.last_modified_time = of.mtime;
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if (ngx_http_set_etag(r) != NGX_OK) {
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return NGX_HTTP_INTERNAL_SERVER_ERROR;
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}
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if (ngx_http_set_content_type(r) != NGX_OK) {
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return NGX_HTTP_INTERNAL_SERVER_ERROR;
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}
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h = ngx_list_push(&r->headers_out.headers);
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if (h == NULL) {
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return NGX_ERROR;
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}
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h->hash = 1;
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ngx_str_set(&h->key, "Content-Encoding");
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ngx_str_set(&h->value, "gzip");
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r->headers_out.content_encoding = h;
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r->ignore_content_encoding = 1;
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/* we need to allocate all before the header would be sent */
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b = ngx_pcalloc(r->pool, sizeof(ngx_buf_t));
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if (b == NULL) {
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return NGX_HTTP_INTERNAL_SERVER_ERROR;
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}
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b->file = ngx_pcalloc(r->pool, sizeof(ngx_file_t));
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if (b->file == NULL) {
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return NGX_HTTP_INTERNAL_SERVER_ERROR;
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}
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rc = ngx_http_send_header(r);
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if (rc == NGX_ERROR || rc > NGX_OK || r->header_only) {
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return rc;
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}
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b->file_pos = 0;
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b->file_last = of.size;
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b->in_file = b->file_last ? 1 : 0;
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b->last_buf = (r == r->main) ? 1 : 0;
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b->last_in_chain = 1;
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b->file->fd = of.fd;
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b->file->name = path;
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b->file->log = log;
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b->file->directio = of.is_directio;
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out.buf = b;
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out.next = NULL;
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return ngx_http_output_filter(r, &out);
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}
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static void *
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ngx_http_gzip_static_create_conf(ngx_conf_t *cf)
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{
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ngx_http_gzip_static_conf_t *conf;
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conf = ngx_palloc(cf->pool, sizeof(ngx_http_gzip_static_conf_t));
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if (conf == NULL) {
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return NULL;
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}
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conf->enable = NGX_CONF_UNSET_UINT;
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return conf;
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}
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static char *
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ngx_http_gzip_static_merge_conf(ngx_conf_t *cf, void *parent, void *child)
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{
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ngx_http_gzip_static_conf_t *prev = parent;
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ngx_http_gzip_static_conf_t *conf = child;
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ngx_conf_merge_uint_value(conf->enable, prev->enable,
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NGX_HTTP_GZIP_STATIC_OFF);
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return NGX_CONF_OK;
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}
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static ngx_int_t
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ngx_http_gzip_static_init(ngx_conf_t *cf)
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{
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ngx_http_handler_pt *h;
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ngx_http_core_main_conf_t *cmcf;
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cmcf = ngx_http_conf_get_module_main_conf(cf, ngx_http_core_module);
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h = ngx_array_push(&cmcf->phases[NGX_HTTP_CONTENT_PHASE].handlers);
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if (h == NULL) {
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return NGX_ERROR;
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}
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*h = ngx_http_gzip_static_handler;
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return NGX_OK;
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}
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