78 lines
3.3 KiB
C
78 lines
3.3 KiB
C
/*
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* http.h
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*
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* Copyright (c) 2020-2024, DarkMatterCore <pabloacurielz@gmail.com>.
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*
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* This file is part of nxdumptool (https://github.com/DarkMatterCore/nxdumptool).
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*
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* nxdumptool is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* nxdumptool 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
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <https://www.gnu.org/licenses/>.
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*/
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#pragma once
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#ifndef __HTTP_H__
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#define __HTTP_H__
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#include <curl/curl.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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/// Callback definition to write downloaded data.
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typedef curl_write_callback HttpWriteCallback;
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/// Callback definition to handle progress updates.
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typedef curl_xferinfo_callback HttpProgressCallback;
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/// Used by httpWriteBufferCallback().
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typedef struct {
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char *data; ///< Dynamically allocated buffer.
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size_t size; ///< Buffer size.
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} HttpBuffer;
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/// Initializes the HTTP client interface.
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bool httpInitialize(void);
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/// Closes the HTTP client interface.
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void httpExit(void);
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/// Writes downloaded data to an output file. May be used as the write callback for httpPerformGetRequest().
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/// Expects 'outstream' / 'write_ptr' to be a FILE pointer.
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size_t httpWriteFileCallback(char *buffer, size_t size, size_t nitems, void *outstream);
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/// Writes downloaded data to an output buffer. May be used as the write callback for httpPerformGetRequest().
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/// Expects 'outstream' / 'write_ptr' to be a pointer to a HttpBuffer element. Its 'data' member is reallocated throughout the download process.
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size_t httpWriteBufferCallback(char *buffer, size_t size, size_t nitems, void *outstream);
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/// Performs a HTTP GET request. Blocks the calling thread until the whole transfer is complete.
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/// Callbacks are optional, but they should be provided to save downloaded data and/or handle progress updates.
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/// If 'outsize' is provided, the download size will be stored in it if the request succeeds.
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bool httpPerformGetRequest(const char *url, bool force_https, size_t *outsize, HttpWriteCallback write_cb, void *write_ptr, HttpProgressCallback progress_cb, void *progress_ptr);
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/// Wrapper for httpPerformGetRequest() + httpWriteFileCallback() that opens/closes the output file on its own.
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/// Returns false if the request fails.
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bool httpDownloadFile(const char *path, const char *url, bool force_https, HttpProgressCallback progress_cb, void *progress_ptr);
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/// Wrapper for httpPerformGetRequest() + httpWriteBufferCallback() that manages a HttpBuffer element on its own.
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/// Returns a pointer to a dynamically allocated buffer that holds the downloaded data, which must be freed by the user. This buffer is not NULL terminated.
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/// Providing 'outsize' is mandatory. Returns NULL if the request fails.
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char *httpDownloadData(size_t *outsize, const char *url, bool force_https, HttpProgressCallback progress_cb, void *progress_ptr);
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#ifdef __cplusplus
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}
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#endif
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#endif /* __HTTP_H__ */
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