static struct st_h2o_sendfile_generator_t *create_generator(h2o_req_t *req, const char *path, size_t path_len, int *is_dir, int flags) { struct st_h2o_sendfile_generator_t *self; h2o_filecache_ref_t *fileref; h2o_iovec_t content_encoding; *is_dir = 0; if ((flags & H2O_FILE_FLAG_SEND_COMPRESSED) != 0 && req->version >= 0x101) { int compressible_types = h2o_get_compressible_types(&req->headers); if (compressible_types != 0) { char *variant_path = h2o_mem_alloc_pool(&req->pool, path_len + sizeof(".gz")); memcpy(variant_path, path, path_len); #define TRY_VARIANT(mask, enc, ext) \ if ((compressible_types & mask) != 0) { \ strcpy(variant_path + path_len, ext); \ if ((fileref = h2o_filecache_open_file(req->conn->ctx->filecache, variant_path, O_RDONLY | O_CLOEXEC)) != NULL) { \ content_encoding = h2o_iovec_init(enc, sizeof(enc) - 1); \ goto Opened; \ } \ } TRY_VARIANT(H2O_COMPRESSIBLE_BROTLI, "br", ".br"); TRY_VARIANT(H2O_COMPRESSIBLE_GZIP, "gzip", ".gz"); #undef TRY_VARIANT } } if ((fileref = h2o_filecache_open_file(req->conn->ctx->filecache, path, O_RDONLY | O_CLOEXEC)) == NULL) return NULL; content_encoding = (h2o_iovec_t){}; Opened: if (S_ISDIR(fileref->st.st_mode)) { h2o_filecache_close_file(fileref); *is_dir = 1; return NULL; } self = h2o_mem_alloc_pool(&req->pool, sizeof(*self)); self->super.proceed = do_proceed; self->super.stop = do_close; self->file.ref = fileref; self->file.off = 0; self->req = NULL; self->bytesleft = self->file.ref->st.st_size; self->ranged.range_count = 0; self->ranged.range_infos = NULL; self->content_encoding = content_encoding; self->send_vary = (flags & H2O_FILE_FLAG_SEND_COMPRESSED) != 0; self->send_etag = (flags & H2O_FILE_FLAG_NO_ETAG) == 0; return self; }
static void on_setup_ostream(h2o_filter_t *_self, h2o_req_t *req, h2o_ostream_t **slot) { struct st_compress_filter_t *self = (void *)_self; struct st_compress_encoder_t *encoder; int compressible_types; h2o_compress_context_t *compressor; ssize_t i; if (req->version < 0x101) goto Next; if (req->res.status != 200) goto Next; if (h2o_memis(req->input.method.base, req->input.method.len, H2O_STRLIT("HEAD"))) goto Next; if (req->res.mime_attr == NULL) h2o_req_fill_mime_attributes(req); if (!req->res.mime_attr->is_compressible) goto Next; if (req->res.content_length < self->args.min_size) goto Next; /* skip if failed to gather the list of compressible types */ if ((compressible_types = h2o_get_compressible_types(&req->headers)) == 0) goto Next; /* skip if content-encoding header is being set (as well as obtain the location of accept-ranges) */ size_t content_encoding_header_index = -1, accept_ranges_header_index = -1; for (i = 0; i != req->res.headers.size; ++i) { if (req->res.headers.entries[i].name == &H2O_TOKEN_CONTENT_ENCODING->buf) content_encoding_header_index = i; else if (req->res.headers.entries[i].name == &H2O_TOKEN_ACCEPT_RANGES->buf) accept_ranges_header_index = i; else continue; } if (content_encoding_header_index != -1) goto Next; /* open the compressor */ #ifndef _MSC_VER #else #define H2O_USE_BROTLI 0 #endif #if H2O_USE_BROTLI if (self->args.brotli.quality != -1 && (compressible_types & H2O_COMPRESSIBLE_BROTLI) != 0) { compressor = h2o_compress_brotli_open(&req->pool, self->args.brotli.quality, req->res.content_length); } else #endif if (self->args.gzip.quality != -1 && (compressible_types & H2O_COMPRESSIBLE_GZIP) != 0) { compressor = h2o_compress_gzip_open(&req->pool, self->args.gzip.quality); } else { goto Next; } /* adjust the response headers */ req->res.content_length = SIZE_MAX; h2o_add_header(&req->pool, &req->res.headers, H2O_TOKEN_CONTENT_ENCODING, compressor->name.base, compressor->name.len); h2o_set_header_token(&req->pool, &req->res.headers, H2O_TOKEN_VARY, H2O_STRLIT("accept-encoding")); if (accept_ranges_header_index != -1) { req->res.headers.entries[accept_ranges_header_index].value = h2o_iovec_init(H2O_STRLIT("none")); } else { h2o_add_header(&req->pool, &req->res.headers, H2O_TOKEN_ACCEPT_RANGES, H2O_STRLIT("none")); } /* setup filter */ encoder = (void *)h2o_add_ostream(req, sizeof(*encoder), slot); encoder->super.do_send = do_send; slot = &encoder->super.next; encoder->compressor = compressor; /* adjust preferred chunk size (compress by 8192 bytes) */ if (req->preferred_chunk_size > BUF_SIZE) req->preferred_chunk_size = BUF_SIZE; Next: h2o_setup_next_ostream(req, slot); }