diff options
Diffstat (limited to 'src/http/modules/ngx_http_gzip_static_module.c')
| -rw-r--r-- | src/http/modules/ngx_http_gzip_static_module.c | 302 |
1 files changed, 302 insertions, 0 deletions
diff --git a/src/http/modules/ngx_http_gzip_static_module.c b/src/http/modules/ngx_http_gzip_static_module.c new file mode 100644 index 000000000..e4aaeb345 --- /dev/null +++ b/src/http/modules/ngx_http_gzip_static_module.c @@ -0,0 +1,302 @@ + +/* + * Copyright (C) Igor Sysoev + */ + + +#include <ngx_config.h> +#include <ngx_core.h> +#include <ngx_http.h> + + +typedef struct { + ngx_flag_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_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_FLAG, + ngx_conf_set_flag_slot, + NGX_HTTP_LOC_CONF_OFFSET, + offsetof(ngx_http_gzip_static_conf_t, enable), + NULL }, + + ngx_null_command +}; + + +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_HTTP_NOT_ALLOWED; + } + + if (r->uri.data[r->uri.len - 1] == '/') { + return NGX_DECLINED; + } + + /* TODO: Win32 */ + if (r->zero_in_uri) { + return NGX_DECLINED; + } + + gzcf = ngx_http_get_module_loc_conf(r, ngx_http_gzip_static_module); + + if (!gzcf->enable || ngx_http_gzip_ok(r) != 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); + + clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module); + + of.test_dir = 0; + 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; + + rc = ngx_open_cached_file(clcf->open_file_cache, &path, &of, r->pool); + + if (rc == NGX_ERROR) { + + 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: + + level = NGX_LOG_ERR; + rc = NGX_DECLINED; + break; + + default: + + level = NGX_LOG_CRIT; + rc = NGX_DECLINED; + break; + } + + ngx_log_error(level, log, of.err, + ngx_open_file_n " \"%s\" failed", path.data); + + return rc; + } + + 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, ngx_errno, + "\"%s\" is not a regular file", path.data); + + return NGX_HTTP_NOT_FOUND; + } + +#endif + + 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_content_type(r) != NGX_OK) { + return NGX_HTTP_INTERNAL_SERVER_ERROR; + } + + h = ngx_list_push(&r->headers_out.headers); + if (h == NULL) { + return NGX_ERROR; + } + + h->hash = 1; + h->key.len = sizeof("Content-Encoding") - 1; + h->key.data = (u_char *) "Content-Encoding"; + h->value.len = sizeof("gzip") - 1; + h->value.data = (u_char *) "gzip"; + + r->headers_out.content_encoding = h; + + if (clcf->gzip_vary) { + h = ngx_list_push(&r->headers_out.headers); + if (h == NULL) { + return NGX_ERROR; + } + + h->hash = 1; + h->key.len = sizeof("Vary") - 1; + h->key.data = (u_char *) "Vary"; + h->value.len = sizeof("Accept-Encoding") - 1; + h->value.data = (u_char *) "Accept-Encoding"; + } + + /* we need to allocate all before the header would be sent */ + + b = ngx_pcalloc(r->pool, sizeof(ngx_buf_t)); + 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 = 1; + b->last_in_chain = 1; + + b->file->fd = of.fd; + b->file->name = path; + b->file->log = log; + + 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 NGX_CONF_ERROR; + } + + conf->enable = NGX_CONF_UNSET; + + 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_value(conf->enable, prev->enable, 0); + + 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; +} |