mirror of
https://github.com/prowler-cloud/prowler.git
synced 2026-07-23 12:31:54 +00:00
Sergio Garcia
90 lines
3.6 KiB
Bash
90 lines
3.6 KiB
Bash
#!/usr/bin/env bash
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# Prowler - the handy cloud security tool (copyright 2018) by Toni de la Fuente
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may not
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# use this file except in compliance with the License. You may obtain a copy
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# of the License at http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software distributed
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# under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
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# CONDITIONS OF ANY KIND, either express or implied. See the License for the
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# specific language governing permissions and limitations under the License.
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# It checks -p optoin first and use it as profile, if not -p provided then
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# check environment variables and if not, it checks and loads credentials from
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# instance profile (metadata server) if runs in an EC2 instance
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aws_profile_loader() {
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INSTANCE_PROFILE=$(curl -s -m 1 http://169.254.169.254/latest/meta-data/iam/security-credentials/)
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if echo "$INSTANCE_PROFILE" | grep -q '404 - Not Found'; then
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INSTANCE_PROFILE=
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fi
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if [[ $PROFILE ]]; then
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PROFILE_OPT="--profile $PROFILE"
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elif [[ $AWS_ACCESS_KEY_ID && $AWS_SECRET_ACCESS_KEY || $AWS_SESSION_TOKEN || $AWS_PROFILE ]];then
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PROFILE="$AWS_PROFILE"
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PROFILE_OPT=""
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# AWS_CONTAINER_CREDENTIALS_RELATIVE_URI is set by default https://docs.aws.amazon.com/sdkref/latest/guide/feature-container-credentials.html
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elif [[ -n $AWS_CONTAINER_CREDENTIALS_RELATIVE_URI ]] && [[ -z $INSTANCE_PROFILE ]]
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then
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PROFILE="INSTANCE-PROFILE"
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set_metadata_credentials "169.254.170.2${AWS_CONTAINER_CREDENTIALS_RELATIVE_URI}"
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elif [[ $AWS_WEB_IDENTITY_TOKEN_FILE ]]; then
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PROFILE=""
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PROFILE_OPT=""
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elif [[ $INSTANCE_PROFILE ]]
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then
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PROFILE="INSTANCE-PROFILE"
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set_metadata_credentials "http://169.254.169.254/latest/meta-data/iam/security-credentials/${INSTANCE_PROFILE}"
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elif [[ $AWS_EXECUTION_ENV == "CloudShell" ]]
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then
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PROFILE_OPT=""
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else
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PROFILE="default"
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PROFILE_OPT="--profile $PROFILE"
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fi
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# Backing up $PROFILE_OPT needed to renew assume_role
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PROFILE_OPT_BAK=$PROFILE_OPT
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# Set default region by aws config, fall back to us-east-1
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REGION_CONFIG=$(aws configure get region)
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if [[ $REGION_OPT ]]; then
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REGION="$REGION_OPT"
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elif [[ $REGION_CONFIG ]]; then
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REGION="$REGION_CONFIG"
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else
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REGION="us-east-1"
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fi
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}
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# Function to get all regions
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get_regions() {
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# Get list of regions based on include/whoami
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if ! REGIONS=$($AWSCLI ec2 describe-regions \
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--query 'Regions[].RegionName' \
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--output text ${PROFILE_OPT} \
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--region "${REGION_FOR_STS}" \
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--region-names ${FILTERREGION//[,]/ } 2>&1)
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then
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echo "$OPTRED Access Denied trying to describe regions! Review permissions as described here: https://github.com/prowler-cloud/prowler/#requirements-and-installation $OPTNORMAL"
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EXITCODE=1
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exit $EXITCODE
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fi
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}
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# Function to set metadata credentials
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set_metadata_credentials() {
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INSTANCE_METADATA_URI="${1}"
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INSTANCE_METADATA=$(curl -s "${INSTANCE_METADATA_URI}")
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AWS_ACCESS_KEY_ID=$(jq -r '.AccessKeyId' <<< "${INSTANCE_METADATA}")
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export AWS_ACCESS_KEY_ID
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AWS_SECRET_ACCESS_KEY=$(jq -r '.SecretAccessKey' <<< "${INSTANCE_METADATA}")
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export AWS_SECRET_ACCESS_KEY
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AWS_SESSION_TOKEN=$(jq -r '.Token' <<< "${INSTANCE_METADATA}")
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export AWS_SESSION_TOKEN
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ASSUME_AWS_SESSION_EXPIRATION=$(jq -r '.Expiration | sub("\\+00:00";"Z") | fromdateiso8601' <<< "${INSTANCE_METADATA}")
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export AWS_SESSION_EXPIRATION=$ASSUME_AWS_SESSION_EXPIRATION
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}
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