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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-19 02:57:58 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-19 02:57:58 +0000 |
commit | be1c7e50e1e8809ea56f2c9d472eccd8ffd73a97 (patch) | |
tree | 9754ff1ca740f6346cf8483ec915d4054bc5da2d /web/server/h2o/libh2o/lib/handler/chunked.c | |
parent | Initial commit. (diff) | |
download | netdata-be1c7e50e1e8809ea56f2c9d472eccd8ffd73a97.tar.xz netdata-be1c7e50e1e8809ea56f2c9d472eccd8ffd73a97.zip |
Adding upstream version 1.44.3.upstream/1.44.3upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'web/server/h2o/libh2o/lib/handler/chunked.c')
-rw-r--r-- | web/server/h2o/libh2o/lib/handler/chunked.c | 113 |
1 files changed, 113 insertions, 0 deletions
diff --git a/web/server/h2o/libh2o/lib/handler/chunked.c b/web/server/h2o/libh2o/lib/handler/chunked.c new file mode 100644 index 00000000..b6ad4346 --- /dev/null +++ b/web/server/h2o/libh2o/lib/handler/chunked.c @@ -0,0 +1,113 @@ +/* + * Copyright (c) 2014 DeNA Co., Ltd. + * + * 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 <assert.h> +#include <stdio.h> +#include <stdlib.h> +#include "h2o.h" + +typedef struct st_chunked_encoder_t { + h2o_ostream_t super; + char buf[64]; +} chunked_encoder_t; + +static void send_chunk(h2o_ostream_t *_self, h2o_req_t *req, h2o_iovec_t *inbufs, size_t inbufcnt, h2o_send_state_t state) +{ + chunked_encoder_t *self = (void *)_self; + h2o_iovec_t *outbufs = alloca(sizeof(h2o_iovec_t) * (inbufcnt + 2)); + size_t chunk_size, outbufcnt = 0, i; + + /* calc chunk size */ + chunk_size = 0; + for (i = 0; i != inbufcnt; ++i) + chunk_size += inbufs[i].len; + req->bytes_sent += chunk_size; + + /* create chunk header and output data */ + if (chunk_size != 0) { + outbufs[outbufcnt].base = self->buf; + outbufs[outbufcnt].len = sprintf(self->buf, "%zx\r\n", chunk_size); + assert(outbufs[outbufcnt].len < sizeof(self->buf)); + outbufcnt++; + memcpy(outbufs + outbufcnt, inbufs, sizeof(h2o_iovec_t) * inbufcnt); + outbufcnt += inbufcnt; + if (state != H2O_SEND_STATE_ERROR) { + outbufs[outbufcnt].base = "\r\n0\r\n\r\n"; + outbufs[outbufcnt].len = state == H2O_SEND_STATE_FINAL ? 7 : 2; + outbufcnt++; + } + } else if (state == H2O_SEND_STATE_FINAL) { + outbufs[outbufcnt].base = "0\r\n\r\n"; + outbufs[outbufcnt].len = 5; + outbufcnt++; + } + + /* if state is error, send a broken chunk to pass the error down to the browser */ + if (state == H2O_SEND_STATE_ERROR) { + outbufs[outbufcnt].base = "\r\n1\r\n"; + outbufs[outbufcnt].len = 5; + 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) +{ + chunked_encoder_t *encoder; + + /* do nothing if not HTTP/1.1 or content-length is known */ + if (req->res.content_length != SIZE_MAX || req->version != 0x101) + goto Next; + /* RFC 2616 4.4 states that the following status codes (and response to a HEAD method) should not include message body */ + if ((100 <= req->res.status && req->res.status <= 199) || req->res.status == 204 || req->res.status == 304) + goto Next; + else if (h2o_memis(req->input.method.base, req->input.method.len, H2O_STRLIT("HEAD"))) + goto Next; + /* we cannot handle certain responses (like 101 switching protocols) */ + if (req->res.status != 200) { + req->http1_is_persistent = 0; + goto Next; + } + /* skip if content-encoding header is being set */ + if (h2o_find_header(&req->res.headers, H2O_TOKEN_TRANSFER_ENCODING, -1) != -1) + goto Next; + + /* set content-encoding header */ + h2o_add_header(&req->pool, &req->res.headers, H2O_TOKEN_TRANSFER_ENCODING, NULL, H2O_STRLIT("chunked")); + + /* set the flag that tells finalostream that req->bytes_sent is already counted */ + req->bytes_counted_by_ostream = 1; + + /* setup filter */ + encoder = (void *)h2o_add_ostream(req, sizeof(chunked_encoder_t), slot); + encoder->super.do_send = send_chunk; + slot = &encoder->super.next; + +Next: + h2o_setup_next_ostream(req, slot); +} + +void h2o_chunked_register(h2o_pathconf_t *pathconf) +{ + h2o_filter_t *self = h2o_create_filter(pathconf, sizeof(*self)); + self->on_setup_ostream = on_setup_ostream; +} |