94 lines
3.3 KiB
C
94 lines
3.3 KiB
C
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/*
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* HTTP file download
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*
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* Copyright (c) 2016-2017 Fabrice Bellard
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#if defined(EMSCRIPTEN)
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#define USE_BUILTIN_CRYPTO
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#endif
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#ifdef USE_BUILTIN_CRYPTO
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#include "aes.h"
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#include "sha256.h"
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#else
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#include <openssl/aes.h>
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#include <openssl/sha.h>
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#include <openssl/evp.h>
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#endif
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#ifdef _WIN32
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#include <winsock2.h>
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#endif
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#define LOG() printf("%s:%d\n", __func__, __LINE__)
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/* XHR */
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/* err < 0: error (no data provided)
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err = 0: end of transfer (data can be provided too)
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err = 1: data chunk
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*/
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typedef void WGetWriteCallback(void *opaque, int err, void *data, size_t size);
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typedef size_t WGetReadCallback(void *opaque, void *data, size_t size);
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typedef struct XHRState XHRState;
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XHRState *fs_wget(const char *url, const char *user, const char *password,
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void *opaque, WGetWriteCallback *cb, BOOL single_write);
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void fs_wget_free(XHRState *s);
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void fs_wget_init(void);
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void fs_wget_end(void);
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#ifndef EMSCRIPTEN
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typedef BOOL FSNetEventLoopCompletionFunc(void *opaque);
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void fs_net_set_fdset(int *pfd_max, fd_set *rfds, fd_set *wfds, fd_set *efds,
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int *ptimeout);
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void fs_net_event_loop(FSNetEventLoopCompletionFunc *cb, void *opaque);
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#endif
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/* crypto */
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extern const uint8_t encrypted_file_magic[4];
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typedef int DecryptFileCB(void *opaque, const uint8_t *data, size_t len);
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typedef struct DecryptFileState DecryptFileState;
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DecryptFileState *decrypt_file_init(AES_KEY *aes_state,
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DecryptFileCB *write_cb,
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void *opaque);
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int decrypt_file(DecryptFileState *s, const uint8_t *data,
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size_t size);
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int decrypt_file_flush(DecryptFileState *s);
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void decrypt_file_end(DecryptFileState *s);
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void pbkdf2_hmac_sha256(const uint8_t *pwd, int pwd_len,
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const uint8_t *salt, int salt_len,
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int iter, int key_len, uint8_t *out);
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/* XHR file */
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typedef void FSWGetFileCB(FSDevice *fs, FSFile *f, int64_t size, void *opaque);
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void fs_wget_file2(FSDevice *fs, FSFile *f, const char *url,
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const char *user, const char *password,
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FSFile *posted_file, uint64_t post_data_len,
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FSWGetFileCB *cb, void *opaque,
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AES_KEY *aes_state);
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