ohmyzsh/plugins/aws/aws.plugin.zsh
Maksym 3e6ee85a16
fix(aws): support MFA for profiles without role to assume (#9411)
Previously, the plugin only supported MFA for profiles that had a role to assume, specified in role_arn. Now, the plugin supports MFA for profiles without a role to assume.

Closes #9408

* refactor(aws plugin): remove dependency on jq

Previously, acp command relied on jq. Now that dependency has been removed, as well as some linter suggestions implemented.
2020-11-04 22:10:22 +01:00

193 lines
6.7 KiB
Bash

function agp() {
echo $AWS_PROFILE
}
# AWS profile selection
function asp() {
if [[ -z "$1" ]]; then
unset AWS_DEFAULT_PROFILE AWS_PROFILE AWS_EB_PROFILE
echo AWS profile cleared.
return
fi
local -a available_profiles
available_profiles=($(aws_profiles))
if [[ -z "${available_profiles[(r)$1]}" ]]; then
echo "${fg[red]}Profile '$1' not found in '${AWS_CONFIG_FILE:-$HOME/.aws/config}'" >&2
echo "Available profiles: ${(j:, :)available_profiles:-no profiles found}${reset_color}" >&2
return 1
fi
export AWS_DEFAULT_PROFILE=$1
export AWS_PROFILE=$1
export AWS_EB_PROFILE=$1
}
# AWS profile switch
function acp() {
if [[ -z "$1" ]]; then
unset AWS_DEFAULT_PROFILE AWS_PROFILE AWS_EB_PROFILE AWS_ACCESS_KEY_ID AWS_SECRET_ACCESS_KEY AWS_SESSION_TOKEN
echo AWS profile cleared.
return
fi
local -a available_profiles
available_profiles=($(aws_profiles))
if [[ -z "${available_profiles[(r)$1]}" ]]; then
echo "${fg[red]}Profile '$1' not found in '${AWS_CONFIG_FILE:-$HOME/.aws/config}'" >&2
echo "Available profiles: ${(j:, :)available_profiles:-no profiles found}${reset_color}" >&2
return 1
fi
local aws_access_key_id="$(aws configure get aws_access_key_id --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 $1)"
local mfa_serial="$(aws configure get mfa_serial --profile $1)"
local role_arn="$(aws configure get role_arn --profile $1)"
# First, if the profile has MFA configured, lets get the token and session duration
local mfa_opt=""
if [[ -n $mfa_serial ]]; then
local mfa_token=""
echo "Please enter your MFA token for $mfa_serial:"
read -r mfa_token
echo "Please enter the session duration in seconds (900-43200; default: 3600, which is the default maximum for a role):"
read -r sess_duration
if [[ -z $sess_duration ]]; then
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
local credentials_output=""
if [[ -n $role_arn ]]; then
# Means we need to assume a specified role
# Check whether external_id is configured to use while assuming the role
local ext_id="$(aws configure get external_id --profile $1)"
local extid_opt=""
if [[ -n $ext_id ]]; then
extid_opt="--external-id $ext_id"
fi
# Get source profile to use to assume role
local profile=$1
local source_profile="$(aws configure get source_profile --profile "$1")"
if [[ -n $source_profile ]]; then
profile=$source_profile
fi
echo "Assuming role $role_arn using profile $profile"
local assume_cmd=(aws sts assume-role "--profile=$profile" "--role-arn $role_arn" "--role-session-name $profile" "$mfa_opt" "$extid_opt"
"--query '[Credentials.AccessKeyId,Credentials.SecretAccessKey,Credentials.SessionToken]' --output text | tr '\t' '\n'")
credentials_output="$(eval "${assume_cmd[@]}")"
elif [[ -n $mfa_opt ]]; then
# Means we only need to do MFA
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
if [[ -n $credentials_output ]]; then
local credentials=("${(f)credentials_output}")
aws_access_key_id=${credentials[1]}
aws_secret_access_key=${credentials[2]}
aws_session_token=${credentials[3]}
fi
if [[ -n $aws_access_key_id && -n $aws_secret_access_key ]]; then
export AWS_DEFAULT_PROFILE=$1
export AWS_PROFILE=$1
export AWS_EB_PROFILE=$1
export AWS_ACCESS_KEY_ID=$aws_access_key_id
export AWS_SECRET_ACCESS_KEY=$aws_secret_access_key
[[ -z "$aws_session_token" ]] && unset AWS_SESSION_TOKEN || export AWS_SESSION_TOKEN=$aws_session_token
echo "Switched to AWS Profile: $1"
fi
}
function aws_change_access_key() {
if [[ -z "$1" ]]; then
echo "usage: $0 <profile>"
return 1
fi
echo Insert the credentials when asked.
asp "$1" || return 1
AWS_PAGER="" aws iam create-access-key
AWS_PAGER="" aws configure --profile "$1"
echo You can now safely delete the old access key running \`aws iam delete-access-key --access-key-id ID\`
echo Your current keys are:
AWS_PAGER="" aws iam list-access-keys
}
function aws_profiles() {
[[ -r "${AWS_CONFIG_FILE:-$HOME/.aws/config}" ]] || return 1
grep --color=never -Eo '\[.*\]' "${AWS_CONFIG_FILE:-$HOME/.aws/config}" | sed -E 's/^[[:space:]]*\[(profile)?[[:space:]]*([-_[:alnum:]\.@]+)\][[:space:]]*$/\2/g'
}
function _aws_profiles() {
reply=($(aws_profiles))
}
compctl -K _aws_profiles asp acp aws_change_access_key
# AWS prompt
function aws_prompt_info() {
[[ -z $AWS_PROFILE ]] && return
echo "${ZSH_THEME_AWS_PREFIX:=<aws:}${AWS_PROFILE}${ZSH_THEME_AWS_SUFFIX:=>}"
}
if [ "$SHOW_AWS_PROMPT" != false ]; then
RPROMPT='$(aws_prompt_info)'"$RPROMPT"
fi
# Load awscli completions
# AWS CLI v2 comes with its own autocompletion. Check if that is there, otherwise fall back
if command -v aws_completer &> /dev/null; then
autoload -Uz bashcompinit && bashcompinit
complete -C aws_completer aws
else
function _awscli-homebrew-installed() {
# check if Homebrew is installed
(( $+commands[brew] )) || return 1
# speculatively check default brew prefix
if [ -h /usr/local/opt/awscli ]; then
_brew_prefix=/usr/local/opt/awscli
else
# ok, it is not in the default prefix
# this call to brew is expensive (about 400 ms), so at least let's make it only once
_brew_prefix=$(brew --prefix awscli)
fi
}
# get aws_zsh_completer.sh location from $PATH
_aws_zsh_completer_path="$commands[aws_zsh_completer.sh]"
# otherwise check common locations
if [[ -z $_aws_zsh_completer_path ]]; then
# Homebrew
if _awscli-homebrew-installed; then
_aws_zsh_completer_path=$_brew_prefix/libexec/bin/aws_zsh_completer.sh
# Ubuntu
elif [[ -e /usr/share/zsh/vendor-completions/_awscli ]]; then
_aws_zsh_completer_path=/usr/share/zsh/vendor-completions/_awscli
# NixOS
elif [[ -e "${commands[aws]:P:h:h}/share/zsh/site-functions/aws_zsh_completer.sh" ]]; then
_aws_zsh_completer_path="${commands[aws]:P:h:h}/share/zsh/site-functions/aws_zsh_completer.sh"
# RPM
else
_aws_zsh_completer_path=/usr/share/zsh/site-functions/aws_zsh_completer.sh
fi
fi
[[ -r $_aws_zsh_completer_path ]] && source $_aws_zsh_completer_path
unset _aws_zsh_completer_path _brew_prefix
fi