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https://github.com/xorgy/mediafire-fuse
synced 2026-01-13 13:14:29 -08:00
Add support for updating local cache through patches
- refactor some code: - code handling the file cache is now in fuse/filecache.c - base36 and base16 encoding and decoding moved to utils/hash.c - mfshell: add "updates" command calling device/get_updates - add container class to store patch information as mfapi/patch.c - apicalls: store more info retrieved by file/get_info - apicalls: add device/get_updates - apicalls: add device/get_patch
This commit is contained in:
josch
213
mfapi/patch.c
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213
mfapi/patch.c
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/*
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* Copyright (C) 2014 Johannes Schauer <j.schauer@email.de>
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2, as published by
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* the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License along with
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* this program; if not, write to the Free Software Foundation, Inc., 51
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* Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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*/
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#define _POSIX_C_SOURCE 200809L // for strdup
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#include <stdint.h>
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#include <openssl/sha.h>
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#include <string.h>
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#include <stdlib.h>
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#include "patch.h"
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struct mfpatch {
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/* revision of the file to be patched */
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uint64_t source_revision;
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/* revision of the target file */
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uint64_t target_revision;
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/* hash of the patch */
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char hash[SHA256_DIGEST_LENGTH * 2 + 1];
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/* hash of the file to be patched */
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char source_hash[SHA256_DIGEST_LENGTH * 2 + 1];
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/* hash of the patched file */
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char target_hash[SHA256_DIGEST_LENGTH * 2 + 1];
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/* expected size of the patched file */
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uint64_t target_size;
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char *link;
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};
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mfpatch *patch_alloc(void)
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{
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mfpatch *patch;
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patch = (mfpatch *) calloc(1, sizeof(mfpatch));
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return patch;
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}
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void patch_free(mfpatch * patch)
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{
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if (patch == NULL)
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return;
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if (patch->link != NULL)
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free(patch->link);
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free(patch);
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return;
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}
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uint64_t patch_get_source_revision(mfpatch * patch)
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{
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if (patch == NULL)
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return -1;
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return patch->source_revision;
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}
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int patch_set_source_revision(mfpatch * patch, uint64_t revision)
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{
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if (patch == NULL)
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return -1;
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patch->source_revision = revision;
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return 0;
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}
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uint64_t patch_get_target_revision(mfpatch * patch)
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{
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if (patch == NULL)
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return -1;
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return patch->target_revision;
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}
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int patch_set_target_revision(mfpatch * patch, uint64_t revision)
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{
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if (patch == NULL)
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return -1;
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patch->target_revision = revision;
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return 0;
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}
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const char *patch_get_hash(mfpatch * patch)
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{
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if (patch == NULL)
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return NULL;
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return patch->hash;
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}
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int patch_set_hash(mfpatch * patch, const char *hash)
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{
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if (patch == NULL)
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return -1;
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if (hash == NULL)
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return -1;
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if (strlen(hash) < 32)
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return -1;
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memset(patch->hash, 0, sizeof(patch->hash));
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strncpy(patch->hash, hash, sizeof(patch->hash) - 1);
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return 0;
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}
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const char *patch_get_source_hash(mfpatch * patch)
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{
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if (patch == NULL)
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return NULL;
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return patch->source_hash;
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}
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int patch_set_source_hash(mfpatch * patch, const char *hash)
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{
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if (patch == NULL)
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return -1;
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if (hash == NULL)
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return -1;
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if (strlen(hash) < 32)
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return -1;
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memset(patch->source_hash, 0, sizeof(patch->source_hash));
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strncpy(patch->source_hash, hash, sizeof(patch->source_hash) - 1);
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return 0;
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}
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const char *patch_get_target_hash(mfpatch * patch)
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{
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if (patch == NULL)
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return NULL;
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return patch->target_hash;
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}
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int patch_set_target_hash(mfpatch * patch, const char *hash)
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{
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if (patch == NULL)
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return -1;
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if (hash == NULL)
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return -1;
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if (strlen(hash) < 32)
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return -1;
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memset(patch->target_hash, 0, sizeof(patch->target_hash));
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strncpy(patch->target_hash, hash, sizeof(patch->target_hash) - 1);
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return 0;
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}
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uint64_t patch_get_target_size(mfpatch * patch)
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{
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if (patch == NULL)
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return -1;
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return patch->target_size;
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}
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int patch_set_target_size(mfpatch * patch, uint64_t size)
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{
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if (patch == NULL)
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return -1;
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patch->target_size = size;
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return 0;
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}
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const char *patch_get_link(mfpatch * patch)
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{
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if (patch == NULL)
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return NULL;
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return patch->link;
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}
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int patch_set_link(mfpatch * patch, const char *link)
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{
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if (patch == NULL)
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return -1;
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if (link == NULL)
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return -1;
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if (patch->link != NULL) {
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free(patch->link);
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}
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patch->link = strdup(link);
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return 0;
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}
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