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bugfix of ota_patch

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This commit is contained in:
daishengdong
2020-06-28 19:23:05 +08:00
parent a5c7a347fa
commit 69f8accae6
2 changed files with 21 additions and 4 deletions
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2
components/ota/common/diff/ota_diff.c
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@@ -1226,7 +1226,7 @@ static int patch_test(uint8_t *old, size_t oldsize, uint8_t *new, size_t newsize
ctrl_blk += sizeof(uint16_t);
Z = offtin_u32(ctrl_blk);
ctrl_blk += sizeof(uint16_t);
ctrl_blk += sizeof(uint32_t);
old_idx = BLK_IDX(Z, blk_len);
old_offset = Z - BLK_LOWER_BOUND(old_idx, blk_len);

23
components/ota/recovery/ota_patch.c
View File

@@ -20,6 +20,22 @@
#include "ota_partition.h"
#include "lzma_uncompress.h"
static int32_t offtin_u32(uint8_t *buf)
{
int32_t y;
y = buf[3] & 0x7F;
y = y * 256; y += buf[2];
y = y * 256; y += buf[1];
y = y * 256; y += buf[0];
if (buf[3] & 0x80) {
y = -y;
}
return y;
}
static uint16_t offtin_u16(uint8_t *buf)
{
int32_t y;
@@ -132,7 +148,8 @@ int ota_patch(uint32_t patch, size_t patchsize, size_t ota_size)
/* the patch4blk stuff */
uint8_t X;
uint16_t I, N, Y, Z, C, D;
uint32_t Z;
uint16_t I, N, Y, C, D;
uint8_t *ctrl_blk, *diff_blk, *extra_blk;
uint16_t cursor = 0;
uint16_t old_idx, old_offset;
@@ -285,8 +302,8 @@ int ota_patch(uint32_t patch, size_t patchsize, size_t ota_size)
Y = offtin_u16(ctrl_blk);
ctrl_blk += sizeof(uint16_t);
Z = offtin_u16(ctrl_blk);
ctrl_blk += sizeof(uint16_t);
Z = offtin_u32(ctrl_blk);
ctrl_blk += sizeof(uint32_t);
old_idx = BLK_IDX(Z, blk_len);
old_offset = Z - BLK_LOWER_BOUND(old_idx, blk_len);