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Error-proofing get-session-creds script.

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mgeeky 2019-05-16 11:00:46 +02:00
parent 4f189a6fc7
commit bf0d2d32e2
1 changed files with 24 additions and 6 deletions
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30
clouds/aws/get-session-creds-in-config-format.sh
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@ -8,21 +8,26 @@
# #
# --------------------------
# Configure below variables. # Configure below variables.
# #
# This profile name must be different among any other profiles oyu have defined in your
# config and credentials file.
PROFILE_NAME=your-profile-name PROFILE_NAME=your-profile-name
ROLE_NAME=Your_Role_Name ROLE_NAME=Your_Role_Name
ROLE_ARN=arn:aws:iam::<NUMBER>:role/$ROLE_NAME ROLE_ARN=arn:aws:iam::<NUMBER>:role/$ROLE_NAME
# If you leave this field empty - one will be deduced from `aws sts get-caller-identity` output # If you leave this field empty - it will be deduced from `aws sts get-caller-identity` output
#SERIAL_MFA=arn:aws:iam::<NUMBER>:mfa/<USER-NAME> #SERIAL_MFA=arn:aws:iam::<NUMBER>:mfa/<USER-NAME>
SERIAL_MFA= SERIAL_MFA=
# Values possible range: 900-43200 # Duration in seconds. Values possible range: 900-43200
# 1 hour - 3600, 2 hours - 7200, 3 hours - 10800, 6 hours - 21600, 12 hours - 43200
DURATION=42000 DURATION=42000
# #
# ------------------------ # --------------------------
# #
# Some times assume-role may return with an Access-Denied if there were no account authenticated # Some times assume-role may return with an Access-Denied if there were no account authenticated
@ -30,7 +35,7 @@ DURATION=42000
out=$(aws sts get-caller-identity) out=$(aws sts get-caller-identity)
if [ $? -ne 0 ]; then if [ $? -ne 0 ]; then
echo "[!] Could not get caller's identity: " echo "[!] Could not get caller's identity: "
echo $out echo "$out"
exit 1 exit 1
fi fi
@ -41,14 +46,27 @@ fi
read -p "Type your AWS MFA Code: " code read -p "Type your AWS MFA Code: " code
echo echo
out=$(aws sts assume-role --serial-number $SERIAL_MFA --role-arn $ROLE_ARN --role-session-name $ROLE_NAME --duration-seconds $DURATION --token-code $code) out=$(aws sts assume-role --serial-number $SERIAL_MFA --role-arn $ROLE_ARN --role-session-name $ROLE_NAME --duration-seconds $DURATION --token-code $code 2>&1)
if [ $? -eq 0 ]; then if [ $? -eq 0 ]; then
valid=$(printf '%dh:%dm:%ds\n' $(($DURATION/3600)) $(($DURATION%3600/60)) $(($DURATION%60)))
echo "[+] Collected session credentials. They will be valid for: $valid. "
echo -e "\tPaste below lines to your '~/.aws/credentials' file:"
echo
echo "[$PROFILE_NAME]" echo "[$PROFILE_NAME]"
echo "$out" | python3 -c 'import sys,json; foo=json.loads(sys.stdin.read()); print("aws_access_key_id={}\naws_secret_access_key={}\naws_session_token={}".format(foo["Credentials"]["AccessKeyId"],foo["Credentials"]["SecretAccessKey"],foo["Credentials"]["SessionToken"]))' echo "$out" | python3 -c 'import sys,json; foo=json.loads(sys.stdin.read()); print("aws_access_key_id={}\naws_secret_access_key={}\naws_session_token={}".format(foo["Credentials"]["AccessKeyId"],foo["Credentials"]["SecretAccessKey"],foo["Credentials"]["SessionToken"]))'
echo echo
else else
echo "[!] Could not obtain assume-role session credentials:" echo "[!] Could not obtain assume-role session credentials:"
echo $out echo "$out"
echo
out2=$(env | grep -E 'AWS_[^=]+')
if [[ "$out2" != "" ]]; then
echo "[!] Your command could fail because of pre-set AWS-related environment variables."
echo -e "\tPlease review them, correct any problems and re-launch that script."
echo
echo "$out2"
echo
fi
exit 1 exit 1
fi fi