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Added x-amz-checksum-sha256 header for Object Lock support #1393

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Added x-amz-checksum-sha256 header for Object Lock support #1393

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8677fc5
Added x-amz-checksum-sha256 header for Object Lock support
AlexisPPLIN Aug 22, 2024
71b8ab3
Fixed import of b64encode from base64
AlexisPPLIN Sep 12, 2024
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10 changes: 10 additions & 0 deletions S3/Crypto.py
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Original file line number Diff line number Diff line change
Expand Up @@ -20,6 +20,8 @@
# Python 2 support
from base64 import encodestring

from base64 import b64encode

from . import Config
from logging import debug
from .BaseUtils import encode_to_s3, decode_from_s3, s3_quote, md5, unicode
Expand Down Expand Up @@ -346,3 +348,11 @@ def calculateChecksum(buffer, mfile, offset, chunk_size, send_chunk):

return md5_hash.hexdigest()
__all__.append("calculateChecksum")

def sha256_hash_to_base64(sha256_hash):
# Extract digest from sha256 hash
sha256_hash_digest = sha256_hash.digest()
# Then convert it to base64
sha256_hash_digest_b64 = b64encode(sha256_hash_digest).decode()
return sha256_hash_digest_b64
__all__.append("sha256_hash_to_base64")
7 changes: 6 additions & 1 deletion S3/S3.py
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Original file line number Diff line number Diff line change
Expand Up @@ -47,7 +47,7 @@
from .ConnMan import ConnMan
from .Crypto import (sign_request_v2, sign_request_v4, checksum_sha256_file,
checksum_sha256_buffer, generate_content_md5,
hash_file_md5, calculateChecksum, format_param_str)
hash_file_md5, calculateChecksum, format_param_str, sha256_hash_to_base64)

try:
from ctypes import ArgumentError
Expand Down Expand Up @@ -1848,6 +1848,11 @@ def send_file(self, request, stream, labels, buffer = '', throttle = 0,
sha256_hash = checksum_sha256_file(stream, offset, size_total)
request.body = sha256_hash

# Provide the checksum with the request. This is important for buckets that have
# Object Lock enabled.

headers['x-amz-checksum-sha256'] = sha256_hash_to_base64(sha256_hash)

if use_expect_continue:
if not size_total:
use_expect_continue = False
Expand Down