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Improve v2 firmware validation and error checks (#449)

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To reduce the chance that a bad firmware image is created and used, the
following functionality has been implemented:

1. Check md5 sums of local files in addition to downloaded files
2. Copy a backup of the original firmware, instead of removing it
3. Do not make an image unless all parts are present
4. Only output success message if the image file exists

The above fixes an issue where if a provided firmware zipfile is unable to
be read, the script continues on, generates a bad demo.bin file, and suggests
the file is good for loading into the camera. The above updates help prevent
this from occurring
This commit is contained in:
John Elkins 2023-07-11 21:21:13 -05:00 committed by GitHub
parent df3a8945bd
commit 46ec7dd02b
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
3 changed files with 34 additions and 14 deletions
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1
v2_install/.gitignore vendored
View File

@ -1 +1,2 @@
demo.bin
demo*.zip

44
v2_install/compile_image.sh
View File

@ -12,6 +12,16 @@ command -v unzip >/dev/null 2>&1 || { echo >&2 "unzip is not installed. Abortin
echo "tools OK"
}
cleanup() {
local version="${1:-firmware}"
echo "saving original firmware"
mv ./v2_ro/demo*.zip "./demo_${version// /_}-orig.zip"
echo "removing temporary work directory"
rm -rf v2_ro
}
download(){
rm -f demo.bin
@ -32,18 +42,20 @@ else
echo "build for v2"
wget $DL_URL -O ./v2_ro/demo.zip
fi
if [[ $(md5sum ./v2_ro/demo.zip) == *"a69b6d5ffdbce89463fa83f7f06ec10b"* ]]; then
echo "v2 4.9.8.1002"
elif [[ $(md5sum ./v2_ro/demo.zip) == *"91793d32fd797a10df572f4f5d72bc55"* ]]; then
echo "pan v1 4.10.8.1002"
else
echo "md5sum failed check, please manually supply file"
rm -rf v2_ro
exit 1
fi
fi
# check the firmware to see if it's supported
local version_found=""
if [[ $(md5sum ./v2_ro/demo*.zip) == *"a69b6d5ffdbce89463fa83f7f06ec10b"* ]]; then
version_found="v2 4.9.8.1002"
elif [[ $(md5sum ./v2_ro/demo*.zip) == *"91793d32fd797a10df572f4f5d72bc55"* ]]; then
version_found="pan v1 4.10.8.1002"
else
cleanup
echo "md5sum failed check, please supply a supported demo.zip file"
exit 1
fi
echo "$version_found"
echo "extracting firmware to temporary work directory"
unzip v2_ro/demo*.zip -d ./v2_ro/
@ -60,10 +72,16 @@ cp v2_kernel.bin v2_ro/fw_dir/kernel.bin
echo "pack firmware image with new kernel"
./fw_tool.sh pack v2_ro/fw_dir demo.bin
echo "remove temporary work directory"
rm -rf v2_ro
cleanup "$version_found"
# check to see if the modified demo.bin has been created
if [ ! -f "demo.bin" ]; then
echo "demo.bin was not created. Aborting."
exit 1
else
echo "demo.bin ready for $version_found. Please copy demo.bin to your memory card"
fi
echo "demo.bin ready. Please copy demo.bin to your memory card"
}

3
v2_install/fw_tool.sh
View File

@ -40,7 +40,8 @@ elif [ "$ACTION" = "pack" ]; then
#need to pad kernel is its smaller than the stock kernel size, 2097152 bytes
dd if=/dev/zero of=$TMP_DIR/kernel.bin bs=1 count=1 seek=2097151
cat $TMP_DIR/kernel.bin $TMP_DIR/rootfs.bin $TMP_DIR/driver.bin $TMP_DIR/appfs.bin > $TMP_DIR/flash.bin
#only run mkimage if cat succeeds, otherwise it's possible that a bad image is created
cat $TMP_DIR/kernel.bin $TMP_DIR/rootfs.bin $TMP_DIR/driver.bin $TMP_DIR/appfs.bin > $TMP_DIR/flash.bin && \
mkimage -A MIPS -O linux -T firmware -C none -a 0 -e 0 -n jz_fw -d $TMP_DIR/flash.bin $DEMO_OUT
else