Philip Withnall
407c683524
Add support in the soup and curl fetchers to send the `If-None-Match` and `If-Modified-Since` request headers, and pass on the `ETag` and `Last-Modified` response headers. This currently introduces no functional changes, but once call sites provide the appropriate integration, this will allow HTTP caching to happen with requests (typically with metadata requests, where the data is not immutable due to being content-addressed). That should reduce bandwidth requirements. Signed-off-by: Philip Withnall <pwithnall@endlessos.org>
96 lines
4.3 KiB
C
96 lines
4.3 KiB
C
/*
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* Copyright (C) 2016 Colin Walters <walters@verbum.org>
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*
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* SPDX-License-Identifier: LGPL-2.0+
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#pragma once
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#ifndef __GI_SCANNER__
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#include "ostree-fetcher.h"
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G_BEGIN_DECLS
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/* We used to only send "ostree/" but now include the version
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* https://github.com/ostreedev/ostree/issues/1405
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* This came up in allowing Fedora infrastructure to work around a libcurl bug with HTTP2.
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*/
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#define OSTREE_FETCHER_USERAGENT_STRING (PACKAGE_NAME "/" PACKAGE_VERSION)
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static inline gboolean
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_ostree_fetcher_tmpf_from_flags (OstreeFetcherRequestFlags flags,
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int dfd,
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GLnxTmpfile *tmpf,
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GError **error)
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{
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if ((flags & OSTREE_FETCHER_REQUEST_LINKABLE) > 0)
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{
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if (!glnx_open_tmpfile_linkable_at (dfd, ".", O_RDWR | O_CLOEXEC, tmpf, error))
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return FALSE;
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}
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else if (!glnx_open_anonymous_tmpfile (O_RDWR | O_CLOEXEC, tmpf, error))
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return FALSE;
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if (!glnx_fchmod (tmpf->fd, 0644, error))
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return FALSE;
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return TRUE;
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}
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gboolean _ostree_fetcher_mirrored_request_to_membuf (OstreeFetcher *fetcher,
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GPtrArray *mirrorlist,
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const char *filename,
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OstreeFetcherRequestFlags flags,
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const char *if_none_match,
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guint64 if_modified_since,
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guint n_network_retries,
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GBytes **out_contents,
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gboolean *out_not_modified,
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char **out_etag,
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guint64 *out_last_modified,
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guint64 max_size,
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GCancellable *cancellable,
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GError **error);
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gboolean _ostree_fetcher_request_uri_to_membuf (OstreeFetcher *fetcher,
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OstreeFetcherURI *uri,
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OstreeFetcherRequestFlags flags,
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const char *if_none_match,
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guint64 if_modified_since,
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guint n_network_retries,
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GBytes **out_contents,
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gboolean *out_not_modified,
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char **out_etag,
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guint64 *out_last_modified,
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guint64 max_size,
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GCancellable *cancellable,
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GError **error);
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void _ostree_fetcher_journal_failure (const char *remote_name,
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const char *url,
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const char *msg);
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gboolean _ostree_fetcher_should_retry_request (const GError *error,
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guint n_retries_remaining);
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GIOErrorEnum _ostree_fetcher_http_status_code_to_io_error (guint status_code);
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G_END_DECLS
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#endif
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