失去了SDK，云计算将会怎样

rl = 'https://s3.{}.amazonaws.com/'.format(os.environ['AWS_REGION'])
credentials = botocore.credentials.Credentials(
environ['AWS_ACCESS_KEY_ID'],
environ['AWS_SECRET_ACCESS_KEY'],
environ['AWS_SESSION_TOKEN'])
request = botocore.awsrequest.AWSRequest(method='GET', url=url)
auth.S3SigV4Auth(
credentials, 's3', os.environ['AWS_REGION']).add_auth(request)
response = botocore.httpsession.URLLib3Session().send(request.prepare())

# Key derivation functions. See:
# http://docs.thinkwithwp.com/general/latest/gr/signature-v4-examples.html#signature-v4-examples-python
defsign(key, msg):
returnnew(key, msg.encode('utf-8'), hashlib.sha256).digest()

defgetSignatureKey(key, dateStamp, regionName, serviceName):
kDate = sign(('AWS4' + key).encode('utf-8'), dateStamp)
kRegion = sign(kDate, regionName)
kService = sign(kRegion, serviceName)
kSigning = sign(kService, 'aws4_request')
returnkSigning

#!/usr/bin/env python3
# -*- coding:utf-8 -*-

importsys
importos
importdatetime
importhashlib
importhmac
importrequests
fromexceptions importHTTPError
fromexceptions importTimeout

ALGORITHM = 'AWS4-HMAC-SHA256'
METHOD = 'GET'


def_sign(key, msg):
returnnew(key, msg.encode('utf-8'), hashlib.sha256).digest()


defget_SignatureKey(key, dateStamp, regionName, serviceName):
date = _sign(('AWS4'+ key).encode('utf-8'), dateStamp)
region = _sign(date, regionName)
service = _sign(region, serviceName)
signing = _sign(service, 'aws4_request')
returnsigning


defget_key():
returnenviron.get('AWS_ACCESS_KEY_ID'), \
environ.get('AWS_SECRET_ACCESS_KEY')


defget_datetime():
current = datetime.datetime.utcnow()
returnstrftime('%Y%m%dT%H%M%SZ'), current.strftime('%Y%m%d')


defget_endpoint(service, region):
return'https://{}.{}.amazonaws.com'.format(service, region)


defget_host(endpoint):
returnreplace('https://', '')


defget_reqUrl(endpoint, canonical_querystring):
return'{}?{}'.format(endpoint, canonical_querystring)


defget_header(region, service, request_parameters):
amzdate, datestamp = get_datetime()
endpoint = get_endpoint(service, region)
host = get_host(endpoint)

access_key, secret_key = get_key()
ifaccess_key is None or secret_key is None:
print('No access key is available.')
exit()

canonical_uri = '/'
canonical_querystring = request_parameters
canonical_headers = 'host:{}\nx-amz-date:{}\n'.format(host, amzdate)

signed_headers = 'host;x-amz-date'
payload_hash = hashlib.sha256(('').encode('utf-8')).hexdigest()

canonical_request = '{}\n{}\n{}\n{}\n{}\n{}'.format(
METHOD,
canonical_uri,
canonical_querystring,
canonical_headers,
signed_headers,
payload_hash
)

credential_scope = '{}/{}/{}/aws4_request'.format(
datestamp, region, service)

string_to_sign = '{}\n{}\n{}\n{}'.format(
ALGORITHM,
amzdate,
credential_scope,
sha256(
encode('utf-8')).hexdigest()
)

signing_key = get_SignatureKey(secret_key, datestamp, region, service)

signature = hmac.new(
signing_key,
(string_to_sign).encode('utf-8'),
sha256
).hexdigest()

authorization_header = \
'{} Credential={}/{},SignedHeaders={},Signature={}'.format(
ALGORITHM,
access_key,
credential_scope,
signed_headers,
signature
)

headers = {'x-amz-date': amzdate, 'Authorization': authorization_header}
request_url = get_reqUrl(endpoint, canonical_querystring)
return request_url, headers


defmain():
service = 'ec2'
region = 'us-west-1'

action = 'DescribeInstances'\
'&Filter.1.Name=instance-state-name&Filter.1.Value.1=running'
version = "2016-11-15"
request_parameters = 'Action={}&Version={}'.format(action, version)

request_url, headers = get_header(region, service, request_parameters)

print('\nBEGIN REQUEST++++++++++++++++++++++++++++++++++++')
print('Request URL = {}'.format(request_url))
print('Request header = {}'.format(str(headers)))
try:
res = requests.get(request_url, headers=headers, timeout=(2, 5))
except Timeout:
print('The request timed out')
except HTTPError as http_err:
print(f'HTTP error occurred: {http_err}')
except Exception as err:
print(f'Other error occurred: {err}')
else:
print('\nRESPONSE++++++++++++++++++++++++++++++++++++')
print('Response code: %d\n' % res.status_code)
print(res.text)


if__name__ == "__main__":
main()

#!/usr/bin/env python3
# -*- coding:utf-8 -*-
# Writen by Lianghong2020-03-12 11:42:56

importsys
importos
importdatetime
importhashlib
importhmac
importjson
importrequests
fromexceptions importHTTPError
fromexceptions importTimeout

ALGORITHM = 'AWS4-HMAC-SHA256'
METHOD = 'POST'


def_sign(key, msg):
returnnew(key, msg.encode("utf-8"), hashlib.sha256).digest()


defget_SignatureKey(key, datestamp, regionName, serviceName):
k_date = _sign(('AWS4'+ key).encode('utf-8'), datestamp)
k_region = _sign(k_date, regionName)
k_service = _sign(k_region, serviceName)
k_signing = _sign(k_service, 'aws4_request')
returnk_signing


defget_key():
returnenviron.get('AWS_ACCESS_KEY_ID'), \
environ.get('AWS_SECRET_ACCESS_KEY')


defget_datetime():
current = datetime.datetime.utcnow()
returnstrftime('%Y%m%dT%H%M%SZ'), current.strftime('%Y%m%d')


defget_host(service, region):
return'{}.{}.amazonaws.com'.format(service, region)


defget_header(service, region, request_parameters):
access_key, secret_key = get_key()
ifaccess_key is None or secret_key is None:
print('No access key is available.')
exit()

amz_date, date_stamp = get_datetime()
host = get_host(service, region)

canonical_uri = '/'
canonical_querystring = ''

content_type = 'application/x-amz-json-1.1'
amz_target = 'AWSShineFrontendService_20170701.TranslateText'

canonical_headers = \
'content-type:{}\nhost:{}\nx-amz-date:{}\nx-amz-target:{}\n'.format(
content_type,
host,
amz_date,
amz_target
)

signed_headers = 'content-type;host;x-amz-date;x-amz-target'
payload_hash = hashlib.sha256(
encode(
'utf-8'
)).hexdigest()

canonical_request = '{}\n{}\n{}\n{}\n{}\n{}'.format(
METHOD,
canonical_uri,
canonical_querystring,
canonical_headers,
signed_headers,
payload_hash
)

credential_scope = '{}/{}/{}/aws4_request'.format(
date_stamp, region, service)

string_to_sign = '{}\n{}\n{}\n{}'.format(
ALGORITHM, amz_date, credential_scope,
sha256(canonical_request.encode('utf-8')).hexdigest()
)

signing_key = get_SignatureKey(secret_key, date_stamp, region, service)
signature = hmac.new(
signing_key,
(string_to_sign).encode('utf-8'),
sha256).hexdigest()

authorization_header = \
'{} Credential={}/{},SignedHeaders={},Signature={}'.format(
ALGORITHM,
access_key,
credential_scope,
signed_headers,
signature
)

headers = {'Content-Type': content_type,
'X-Amz-Date': amz_date,
'X-Amz-Target': amz_target,
'Authorization': authorization_header}

return headers


defmain():
service = 'translate'
region = 'ap-northeast-1'

host = get_host(service, region)
endpoint = 'https://{}/'.format(host)

text = 'Amazon Translate is a text translation service that use '\
'advanced machine learning technologies to provide high-quality '\
'translation on demand. You can use Amazon Translate to translate '\
'unstructured text documents or to build applications that work in '\
'multiple languages.'\
'Amazon Translate provides translation between a source language '\
'(the input language) and a target language (the output language). ' \
'A source language-target language combination is known as a '\
'language pair.'

source_lang_code = 'en'
target_lang_code = 'zh'

request_parameters = '{{"{}": "{}","{}": "{}","{}": "{}"}}'.format(
"Text",
text,
"SourceLanguageCode",
source_lang_code,
"TargetLanguageCode",
target_lang_code
)

headers = get_header(service, region, request_parameters)
# print('endpoint is ==>\n{}\n'.format(endpoint))
# print('request_parameters is ==>\n{}\n'.format(request_parameters))
# print('headers is ==>\n{}\n'.format(headers))

try:
res = requests.post(
endpoint,
data=request_parameters,
headers=headers
)
except Timeout:
print('The request timed out')
except HTTPError as http_err:
print(f'HTTP error occurred: {http_err}')
except Exception as err:
print(f'Other error occurred: {err}')
else:
json_content = json.loads(res.text)
print('The original is -->\n{}\n'.format(text))
print('The translation is -->\n{}\n'.format(
json_content['TranslatedText']
))
# print('Response:\n\t{}'.format(res.text))


if__name__ == "__main__":
main()

#!/bin/bash
set -e

fileLocal=""
bucket=""
region=""
storageClass="${4:-STANDARD}"# or 'REDUCED_REDUNDANCY'
AWS_CONFIG_FILE="$HOME/.aws/credentials"


awsStringSign4() {
kSecret="AWS4$1"
kDate=$(printf         '%s'"$2" | openssl dgst -sha256 -hex -mac HMAC -macopt "key:${kSecret}"     2>/dev/null | sed 's/^.* //')
kRegion=$(printf       '%s'"$3" | openssl dgst -sha256 -hex -mac HMAC -macopt "hexkey:${kDate}"    2>/dev/null | sed 's/^.* //')
kService=$(printf      '%s'"$4" | openssl dgst -sha256 -hex -mac HMAC -macopt "hexkey:${kRegion}"  2>/dev/null | sed 's/^.* //')
kSigning=$(printf 'aws4_request'| openssl dgst -sha256 -hex -mac HMAC -macopt "hexkey:${kService}" 2>/dev/null | sed 's/^.* //')
signedString=$(printf  '%s'"$5" | openssl dgst -sha256 -hex -mac HMAC -macopt "hexkey:${kSigning}" 2>/dev/null | sed 's/^.* //')
printf '%s'"${signedString}"
}

iniGet() {
printf '%s'$(sed -n "/^[ \t]*\[$2\]/,/\[/s/^[ \t]*$3[ \t]*=[ \t]*//p" $1)
}

# Initialize access keys
if[ -z "${AWS_CONFIG_FILE:-}"]; then
if[ -z "${AWS_ACCESS_KEY:-}" ]; then
echo 'AWS_CONFIG_FILE or AWS_ACCESS_KEY/AWS_SECRET_KEY envvars not set.'
exit 1
else
awsAccess="${AWS_ACCESS_KEY}"
awsSecret="${AWS_SECRET_KEY}"
awsRegion=${region}
fi
else
awsProfile='default'
awsAccess="$(iniGet "${AWS_CONFIG_FILE}" "${awsProfile}" 'aws_access_key_id')"
awsSecret="$(iniGet "${AWS_CONFIG_FILE}" "${awsProfile}" 'aws_secret_access_key')"
awsRegion="$(iniGet "${AWS_CONFIG_FILE}" "${awsProfile}" 'region')"
fi

# Initialize defaults
fileRemote="${fileLocal}"

if[ -z "${region}"]; then
region="${awsRegion}"
fi

echo "Uploading""${fileLocal}""->" "${bucket}" "${region}" "${storageClass}"
# Initialize helper variables

httpReq='PUT'
authType='AWS4-HMAC-SHA256'
service='s3'
baseUrl=".${service}.amazonaws.com"
dateValueS=$(date -u +'%Y%m%d')
dateValueL=$(date -u +'%Y%m%dT%H%M%SZ')
ifhash file 2>/dev/null; then
contentType="$(file -b --mime-type "${fileLocal}")"
else
contentType='application/octet-stream'
fi

# 0. Hash the file to be uploaded
if[ -f "${fileLocal}"]; then
payloadHash=$(openssl dgst -sha256 -hex < "${fileLocal}"2>/dev/null | sed 's/^.* //')
else
echo "File not found: '${fileLocal}'"
exit 1
fi

# 1. Create canonical request
# NOTE: order significant in ${headerList} and ${canonicalRequest}
headerList='content-type;host;x-amz-content-sha256;x-amz-date;x-amz-server-side-encryption;x-amz-storage-class'

canonicalRequest="\
${httpReq}
/${fileRemote}

content-type:${contentType}
host:${bucket}${baseUrl}
x-amz-content-sha256:${payloadHash}
x-amz-date:${dateValueL}
x-amz-server-side-encryption:AES256
x-amz-storage-class:${storageClass}

${headerList}
${payloadHash}"

# Hash it
canonicalRequestHash=$(printf '%s'"${canonicalRequest}"| openssl dgst -sha256 -hex 2>/dev/null | sed 's/^.* //')

# 2. Create string to sign
stringToSign="\
${authType}
${dateValueL}
${dateValueS}/${region}/${service}/aws4_request
${canonicalRequestHash}"

# 3. Sign the string
signature=$(awsStringSign4 "${awsSecret}""${dateValueS}" "${region}" "${service}" "${stringToSign}")

# Upload
curl -s -L --proto-redir =https -X "${httpReq}"-T "${fileLocal}" \
-H "Content-Type: ${contentType}" \
-H "Host: ${bucket}${baseUrl}" \
-H "X-Amz-Content-SHA256: ${payloadHash}" \
-H "X-Amz-Date: ${dateValueL}" \
-H "X-Amz-Server-Side-Encryption: AES256" \
-H "X-Amz-Storage-Class: ${storageClass}" \
-H "Authorization: ${authType} Credential=${awsAccess}/${dateValueS}/${region}/${service}/aws4_request, SignedHeaders=${headerList}, Signature=${signature}" \
"https://${bucket}${baseUrl}/${fileRemote}"