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fix(aws): fix acp function for MFA without role and other fixes (#9426)

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* fix(aws): don't duplicate aws_prompt_info function in RPROMPT

* refactor(aws): clean up logic in acp function and fix session duration input

Fixes #9409
This commit is contained in:
Marc Cornellà 2020-11-10 23:20:51 +01:00 committed by GitHub
parent fc82aff77c
commit dc4692b53e
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GPG key ID: 4AEE18F83AFDEB23
1 changed files with 65 additions and 58 deletions
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105
plugins/aws/aws.plugin.zsh
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@ -26,7 +26,8 @@ function asp() {
# AWS profile switch # AWS profile switch
function acp() { function acp() {
if [[ -z "$1" ]]; then if [[ -z "$1" ]]; then
unset AWS_DEFAULT_PROFILE AWS_PROFILE AWS_EB_PROFILE AWS_ACCESS_KEY_ID AWS_SECRET_ACCESS_KEY AWS_SESSION_TOKEN unset AWS_DEFAULT_PROFILE AWS_PROFILE AWS_EB_PROFILE
unset AWS_ACCESS_KEY_ID AWS_SECRET_ACCESS_KEY AWS_SESSION_TOKEN
echo AWS profile cleared. echo AWS profile cleared.
return return
fi fi
@ -39,73 +40,79 @@ function acp() {
return 1 return 1
fi fi
local aws_access_key_id="$(aws configure get aws_access_key_id --profile $1)" local profile="$1"
local aws_secret_access_key="$(aws configure get aws_secret_access_key --profile $1)"
local aws_session_token="$(aws configure get aws_session_token --profile $1)" # Get fallback credentials for if the aws command fails or no command is run
local mfa_serial="$(aws configure get mfa_serial --profile $1)" local aws_access_key_id="$(aws configure get aws_access_key_id --profile $profile)"
local role_arn="$(aws configure get role_arn --profile $1)" local aws_secret_access_key="$(aws configure get aws_secret_access_key --profile $profile)"
local aws_session_token="$(aws configure get aws_session_token --profile $profile)"
# First, if the profile has MFA configured, lets get the token and session duration # First, if the profile has MFA configured, lets get the token and session duration
local mfa_opt="" local mfa_serial="$(aws configure get mfa_serial --profile $profile)"
if [[ -n $mfa_serial ]]; then if [[ -n "$mfa_serial" ]]; then
local mfa_token="" local -a mfa_opt
echo "Please enter your MFA token for $mfa_serial:" local mfa_token sess_duration
echo -n "Please enter your MFA token for $mfa_serial: "
read -r mfa_token read -r mfa_token
echo "Please enter the session duration in seconds (900-43200; default: 3600, which is the default maximum for a role):" echo -n "Please enter the session duration in seconds (900-43200; default: 3600, which is the default maximum for a role): "
read -r sess_duration read -r sess_duration
if [[ -z $sess_duration ]]; then mfa_opt=(--serial-number "$mfa_serial" --token-code "$mfa_token" --duration-seconds "${sess_duration:-3600}")
sess_duration="3600"
fi
mfa_opt="--serial-number $mfa_serial --token-code $mfa_token --duration-seconds $sess_duration"
fi
# Now see whether we need to just MFA for the current role, or assume a different one # Now see whether we need to just MFA for the current role, or assume a different one
local credentials_output="" local role_arn="$(aws configure get role_arn --profile $profile)"
if [[ -n $role_arn ]]; then
if [[ -n "$role_arn" ]]; then
# Means we need to assume a specified role # Means we need to assume a specified role
aws_command=(aws sts assume-role --role-arn "$role_arn" "${mfa_opt[@]}")
# Check whether external_id is configured to use while assuming the role # Check whether external_id is configured to use while assuming the role
local ext_id="$(aws configure get external_id --profile $1)" local external_id="$(aws configure get external_id --profile "$profile")"
local extid_opt="" if [[ -n "$external_id" ]]; then
if [[ -n $ext_id ]]; then aws_command+=(--external-id "$external_id")
extid_opt="--external-id $ext_id"
fi fi
# Get source profile to use to assume role # Get source profile to use to assume role
local profile=$1 local source_profile="$(aws configure get source_profile --profile "$profile")"
local source_profile="$(aws configure get source_profile --profile "$1")" aws_command+=(--profile="${source_profile:-profile}" --role-session-name "${source_profile:-profile}")
if [[ -n $source_profile ]]; then
profile=$source_profile
fi
echo "Assuming role $role_arn using profile $profile" echo "Assuming role $role_arn using profile ${source_profile:-profile}"
local assume_cmd=(aws sts assume-role "--profile=$profile" "--role-arn $role_arn" "--role-session-name $profile" "$mfa_opt" "$extid_opt" else
"--query '[Credentials.AccessKeyId,Credentials.SecretAccessKey,Credentials.SessionToken]' --output text | tr '\t' '\n'")
credentials_output="$(eval "${assume_cmd[@]}")"
elif [[ -n $mfa_opt ]]; then
# Means we only need to do MFA # Means we only need to do MFA
aws_command=(aws sts get-session-token --profile="$profile" "${mfa_opt[@]}")
echo "Obtaining session token for profile $profile" echo "Obtaining session token for profile $profile"
local get_token_cmd=(aws sts get-session-token "--profile=$profile" "$mfa_opt"
"--query '[Credentials.AccessKeyId,Credentials.SecretAccessKey,Credentials.SessionToken]' --output text | tr '\t' '\n'")
credentials_output="$(eval "${get_token_cmd[@]}")"
fi fi
if [[ -n $credentials_output ]]; then # Format output of aws command for easier processing
local credentials=("${(f)credentials_output}") aws_command+=(--query '[Credentials.AccessKeyId,Credentials.SecretAccessKey,Credentials.SessionToken]' --output text)
aws_access_key_id=${credentials[1]}
aws_secret_access_key=${credentials[2]} # Run the aws command to obtain credentials
aws_session_token=${credentials[3]} local -a credentials
credentials=(${(ps:\t:)"$(${aws_command[@]})"})
if [[ -n "$credentials" ]]; then
aws_access_key_id="${credentials[1]}"
aws_secret_access_key="${credentials[2]}"
aws_session_token="${credentials[3]}"
fi
fi fi
if [[ -n $aws_access_key_id && -n $aws_secret_access_key ]]; then # Switch to AWS profile
export AWS_DEFAULT_PROFILE=$1 if [[ -n "${aws_access_key_id}" && -n "$aws_secret_access_key" ]]; then
export AWS_PROFILE=$1 export AWS_DEFAULT_PROFILE="$profile"
export AWS_EB_PROFILE=$1 export AWS_PROFILE="$profile"
export AWS_ACCESS_KEY_ID=$aws_access_key_id export AWS_EB_PROFILE="$profile"
export AWS_SECRET_ACCESS_KEY=$aws_secret_access_key export AWS_ACCESS_KEY_ID="$aws_access_key_id"
[[ -z "$aws_session_token" ]] && unset AWS_SESSION_TOKEN || export AWS_SESSION_TOKEN=$aws_session_token export AWS_SECRET_ACCESS_KEY="$aws_secret_access_key"
echo "Switched to AWS Profile: $1"
if [[ -n "$aws_session_token" ]]; then
export AWS_SESSION_TOKEN="$aws_session_token"
else
unset AWS_SESSION_TOKEN
fi
echo "Switched to AWS Profile: $profile"
fi fi
} }
@ -141,7 +148,7 @@ function aws_prompt_info() {
echo "${ZSH_THEME_AWS_PREFIX:=<aws:}${AWS_PROFILE}${ZSH_THEME_AWS_SUFFIX:=>}" echo "${ZSH_THEME_AWS_PREFIX:=<aws:}${AWS_PROFILE}${ZSH_THEME_AWS_SUFFIX:=>}"
} }
if [ "$SHOW_AWS_PROMPT" != false ]; then if [[ "$SHOW_AWS_PROMPT" != false && "$RPROMPT" != *'$(aws_prompt_info)'* ]]; then
RPROMPT='$(aws_prompt_info)'"$RPROMPT" RPROMPT='$(aws_prompt_info)'"$RPROMPT"
fi fi