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Add support for AWS Auth with WebIdentity/OIDC #1112

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Add support for AWS Auth with WebIdentity/OIDC #1112

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56 changes: 42 additions & 14 deletions S3/Config.py
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Original file line number Diff line number Diff line change
Expand Up @@ -15,6 +15,9 @@
import io
import sys
import json
import time
import urllib.parse
import xml.etree.cElementTree
from . import Progress
from .SortedDict import SortedDict
try:
Expand Down Expand Up @@ -268,23 +271,48 @@ def role_config(self):
Get credentials from IAM authentication
"""
try:
conn = httplib.HTTPConnection(host='169.254.169.254', timeout = 2)
conn.request('GET', "/latest/meta-data/iam/security-credentials/")
resp = conn.getresponse()
files = resp.read()
if resp.status == 200 and len(files)>1:
conn.request('GET', "/latest/meta-data/iam/security-credentials/%s" % files.decode('utf-8'))
resp=conn.getresponse()
if resp.status == 200:
resp_content = config_unicodise(resp.read())
creds=json.loads(resp_content)
Config().update_option('access_key', config_unicodise(creds['AccessKeyId']))
Config().update_option('secret_key', config_unicodise(creds['SecretAccessKey']))
Config().update_option('access_token', config_unicodise(creds['Token']))
role_arn = os.environ.get('AWS_ROLE_ARN')
web_identity_token_file = os.environ.get('AWS_WEB_IDENTITY_TOKEN_FILE')
role_session_name = 'role-session-%s' % (int(time.time()))
if web_identity_token_file:
with open(web_identity_token_file) as f:
web_identity_token = f.read()
params = {
"Action": "AssumeRoleWithWebIdentity",
"Version": "2011-06-15",
"RoleArn": role_arn,
"RoleSessionName": role_session_name,
"WebIdentityToken": web_identity_token
}
conn = httplib.HTTPSConnection(host='sts.amazonaws.com', timeout = 2)
conn.request('POST', '/?' + urllib.parse.urlencode(params))
resp = conn.getresponse()
files = resp.read()
if resp.status == 200 and len(files)>1:
creds = parse_xml_to_dict(files)
Config().update_option('access_key', creds['AssumeRoleWithWebIdentityResult']['Credentials']['AccessKeyId'])
Config().update_option('secret_key', creds['AssumeRoleWithWebIdentityResult']['Credentials']['SecretAccessKey'])
Config().update_option('access_token', creds['AssumeRoleWithWebIdentityResult']['Credentials']['SessionToken'])
else:
raise IOError
else:
raise IOError
conn = httplib.HTTPConnection(host='169.254.169.254', timeout = 2)
conn.request('GET', "/latest/meta-data/iam/security-credentials/")
resp = conn.getresponse()
files = resp.read()
if resp.status == 200 and len(files)>1:
conn.request('GET', "/latest/meta-data/iam/security-credentials/%s" % files.decode('utf-8'))
resp=conn.getresponse()
if resp.status == 200:
resp_content = config_unicodise(resp.read())
creds=json.loads(resp_content)
Config().update_option('access_key', config_unicodise(creds['AccessKeyId']))
Config().update_option('secret_key', config_unicodise(creds['SecretAccessKey']))
Config().update_option('access_token', config_unicodise(creds['Token']))
else:
raise IOError
else:
raise IOError
except:
raise

Expand Down