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Editing: aws.py

# This file is part of the sos project: https://github.com/sosreport/sos
#
# This copyrighted material is made available to anyone wishing to use,
# modify, copy, or redistribute it subject to the terms and conditions of
# version 2 of the GNU General Public License.
#
# See the LICENSE file in the source distribution for further information.

from sos.report.plugins import Plugin, IndependentPlugin

class Aws(Plugin, IndependentPlugin):

short_desc = 'AWS EC2 instance metadata'

plugin_name = 'aws'
    profiles = ('virt',)

def _is_ec2(self):
        dmi_files = ("/sys/devices/virtual/dmi/id/sys_vendor",
                     "/sys/devices/virtual/dmi/id/bios_version")
        return bool(self.file_grep(r"(Amazon|.*amazon)", *dmi_files))

# Called by sos to determine if the plugin will run
    def check_enabled(self):
        return self._is_ec2()

def setup(self):
        if not self._is_ec2():
            self.soslog.info(
                "Not an EC2 instance; skipping AWS metadata collection")
            return

# Using IMDSv2 if possible, if not, going IMDSv1
        # https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/configuring-instance-metadata-service.html

# Try to get an IMDSv2 token
        token_url = 'http://169.254.169.254/latest/api/token'
        token_cmd = f'curl -sS -X PUT -H \
            X-aws-ec2-metadata-token-ttl-seconds:21600 {token_url}'

try:
            token = self.exec_cmd(token_cmd, timeout=1)['output']
        except Exception:
            token = ''

# Add header only if token retrieval succeeded
        token_header = ''

if token:
            token_header = f'-H X-aws-ec2-metadata-token:{token}'

# List of metadata paths we want to get
        metadata_paths = [
                'hostname',
                'instance-id',
                'instance-life-cycle',
                'instance-type',
                'placement/availability-zone-id',
                ]

base_url = 'http://169.254.169.254/latest/meta-data/'

# Loop on the metadata paths
        for path in metadata_paths:
            meta_url = base_url + path
            safe_name = path.replace('/', '_')
            self.add_cmd_output(
                    f'curl -sS {token_header} {meta_url}',
                    suggest_filename=f'aws_metadata_{safe_name}.txt'
            )

# Those metadata entries do not include any sensitive information.
        # No need to mask any data.

# vim: set et ts=4 sw=4 :

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