From 58daab21cd043e1dc37024a7f99b396788372918 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sat, 9 Mar 2024 14:19:48 +0100 Subject: Merging upstream version 1.44.3. Signed-off-by: Daniel Baumann --- web/server/h2o/libh2o/lib/handler/compress.c | 144 +++++++++++++++++++++++++++ 1 file changed, 144 insertions(+) create mode 100644 web/server/h2o/libh2o/lib/handler/compress.c (limited to 'web/server/h2o/libh2o/lib/handler/compress.c') diff --git a/web/server/h2o/libh2o/lib/handler/compress.c b/web/server/h2o/libh2o/lib/handler/compress.c new file mode 100644 index 000000000..615977131 --- /dev/null +++ b/web/server/h2o/libh2o/lib/handler/compress.c @@ -0,0 +1,144 @@ +/* + * Copyright (c) 2015,2016 Justin Zhu, DeNA Co., Ltd., Kazuho Oku + * + * Permission is hereby granted, free of charge, to any person obtaining a copy + * of this software and associated documentation files (the "Software"), to + * deal in the Software without restriction, including without limitation the + * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or + * sell copies of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE + * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING + * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS + * IN THE SOFTWARE. + */ +#include +#include +#include "h2o.h" + +#ifndef BUF_SIZE +#define BUF_SIZE 8192 +#endif + +struct st_compress_filter_t { + h2o_filter_t super; + h2o_compress_args_t args; +}; + +struct st_compress_encoder_t { + h2o_ostream_t super; + h2o_compress_context_t *compressor; +}; + +static void do_send(h2o_ostream_t *_self, h2o_req_t *req, h2o_iovec_t *inbufs, size_t inbufcnt, h2o_send_state_t state) +{ + struct st_compress_encoder_t *self = (void *)_self; + h2o_iovec_t *outbufs; + size_t outbufcnt; + + self->compressor->transform(self->compressor, inbufs, inbufcnt, state, &outbufs, &outbufcnt); + h2o_ostream_send_next(&self->super, req, outbufs, outbufcnt, state); +} + +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; + + switch (req->compress_hint) { + case H2O_COMPRESS_HINT_DISABLE: + /* compression was explicitely disabled, skip */ + goto Next; + case H2O_COMPRESS_HINT_ENABLE: + /* compression was explicitely enabled */ + break; + case H2O_COMPRESS_HINT_AUTO: + default: + /* no hint from the producer, decide whether to compress based + on the configuration */ + 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 */ +#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 { + /* let proxies know that we looked at accept-encoding when deciding not to compress */ + h2o_set_header_token(&req->pool, &req->res.headers, H2O_TOKEN_VARY, H2O_STRLIT("accept-encoding")); + goto Next; + } + + /* adjust the response headers */ + req->res.content_length = SIZE_MAX; + h2o_add_header(&req->pool, &req->res.headers, H2O_TOKEN_CONTENT_ENCODING, NULL, 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, NULL, 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); +} + +void h2o_compress_register(h2o_pathconf_t *pathconf, h2o_compress_args_t *args) +{ + struct st_compress_filter_t *self = (void *)h2o_create_filter(pathconf, sizeof(*self)); + self->super.on_setup_ostream = on_setup_ostream; + self->args = *args; +} -- cgit v1.2.3