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Merge pull request #882 from earlchew/issue-817

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[curl] Assume long encryption keys are base64 encoded
This commit is contained in:
Takeshi Nakatani 2019-01-06 17:29:04 +09:00 committed by GitHub
commit 4ed0e5f35a
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GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 28 additions and 9 deletions
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37
src/curl.cpp
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@ -964,19 +964,38 @@ bool S3fsCurl::PushbackSseKeys(string& onekey)
if('#' == onekey[0]){
return false;
}
// make base64
char* pbase64_key;
if(NULL == (pbase64_key = s3fs_base64((unsigned char*)onekey.c_str(), onekey.length()))){
S3FS_PRN_ERR("Failed to convert base64 from SSE-C key %s", onekey.c_str());
return false;
// make base64 if the key is short enough, otherwise assume it is already so
string base64_key;
string raw_key;
if(onekey.length() > 256 / 8){
char* p_key;
size_t keylength;
if(NULL != (p_key = (char *)s3fs_decode64(onekey.c_str(), &keylength))) {
raw_key = string(p_key, keylength);
base64_key = onekey;
free(p_key);
} else {
S3FS_PRN_ERR("Failed to convert base64 to SSE-C key %s", onekey.c_str());
return false;
}
} else {
char* pbase64_key;
if(NULL != (pbase64_key = s3fs_base64((unsigned char*)onekey.c_str(), onekey.length()))) {
raw_key = onekey;
base64_key = pbase64_key;
free(pbase64_key);
} else {
S3FS_PRN_ERR("Failed to convert base64 from SSE-C key %s", onekey.c_str());
return false;
}
}
string base64_key = pbase64_key;
free(pbase64_key);
// make MD5
string strMd5;
if(!make_md5_from_string(onekey.c_str(), strMd5)){
S3FS_PRN_ERR("Could not make MD5 from SSE-C keys(%s).", onekey.c_str());
if(!make_md5_from_string(raw_key.c_str(), strMd5)){
S3FS_PRN_ERR("Could not make MD5 from SSE-C keys(%s).", raw_key.c_str());
return false;
}
// mapped MD5 = SSE Key