Created
July 20, 2022 01:03
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# gat = (G)et (A)ws session(T)oken | |
gat() { | |
local TOKEN_DURATION=28800 # 8h | |
local APRO_BACKUP | |
local AKID_BACKUP | |
local ASAK_BACKUP | |
local ASET_BACKUP | |
APRO_BACKUP=$AWS_PROFILE | |
AKID_BACKUP=$AWS_ACCESS_KEY_ID | |
ASAK_BACKUP=$AWS_SECRET_ACCESS_KEY | |
ASET_BACKUP=$AWS_SESSION_TOKEN | |
if [ -n "$AWS_SESSION_TOKEN" -a "$1" != "-f" ] ; then | |
echo "Seems we are already using a session token, use -f to override." | |
return | |
fi | |
echo -n "AWS profile to use (ENTER for none): " | |
read AWS_PROFILE | |
[ -z "$AWS_PROFILE" ] && unset AWS_PROFILE | |
[ -n "$AWS_PROFILE" ] && echo "Using AWS profile '$AWS_PROFILE'" && export AWS_PROFILE | |
echo -n "Enter MFA token value (ENTER to abort): " | |
read MFA_TOKEN | |
[ -z "$MFA_TOKEN" ] && echo "Abort." && return | |
if [ -n "$AWS_SESSION_TOKEN" ] ; then | |
unset AWS_SESSION_TOKEN | |
unset AWS_ACCESS_KEY_ID | |
unset AWS_SECRET_ACCESS_KEY | |
fi | |
MFA_ARN=$(aws iam list-mfa-devices | jq -r '.MFADevices[0].SerialNumber') | |
if [ "$?" != "0" ] ; then | |
export AWS_PROFILE=$APRO_BACKUP | |
export AWS_ACCESS_KEY_ID=$AKID_BACKUP | |
export AWS_SECRET_ACCESS_KEY=$ASAK_BACKUP | |
export AWS_SESSION_TOKEN=$ASET_BACKUP | |
return | |
fi | |
SESSION_TOKEN_JSON=$(aws sts get-session-token --serial-number $MFA_ARN --token-code $MFA_TOKEN --duration-seconds $TOKEN_DURATION) | |
if [ "$?" != "0" ] ; then | |
export AWS_PROFILE=$APRO_BACKUP | |
export AWS_ACCESS_KEY_ID=$AKID_BACKUP | |
export AWS_SECRET_ACCESS_KEY=$ASAK_BACKUP | |
export AWS_SESSION_TOKEN=$ASET_BACKUP | |
return | |
fi | |
export AWS_ACCESS_KEY_ID=$(echo $SESSION_TOKEN_JSON | jq -r '.Credentials.AccessKeyId') | |
export AWS_SECRET_ACCESS_KEY=$(echo $SESSION_TOKEN_JSON | jq -r '.Credentials.SecretAccessKey') | |
export AWS_SESSION_TOKEN=$(echo $SESSION_TOKEN_JSON | jq -r '.Credentials.SessionToken') | |
unset AWS_PROFILE | |
} |
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