-
Notifications
You must be signed in to change notification settings - Fork 25
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
Support official AWSCLI environment variables AWS_DEFAULT_PROFILE and AWS_SHARED_CREDENTIALS_FILE. Use integers and arithmatic for show* variables. Add short options to README.md
- Loading branch information
1 parent
b7de2c3
commit 3157ac7
Showing
2 changed files
with
136 additions
and
92 deletions.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
|
|
@@ -9,13 +9,13 @@ set -o nounset # Trigger error when expanding unset variables 'set -u' | |
| set -o pipefail # Do not hide errors within pipes 'set -o pipefail' | ||
| IFS=$'\n\t' | ||
|
|
||
| script_name="${0##*/}" | ||
| # | ||
| # Fetch the AWS access key and/or secret for an AWS profile | ||
| # Fetch the AWS access_key and/or secret from an AWS profile | ||
| # stored in the ~/.aws/credentials file ini format | ||
| # | ||
| # Aaron Roydhouse <[email protected]>, 2017 | ||
| # https://github.com/whereisaaron/get-aws-profile-bash/ | ||
| # | ||
|
|
||
| # | ||
| # cfg_parser - Parse and ini files into variables | ||
|
|
@@ -25,28 +25,25 @@ IFS=$'\n\t' | |
| # http://pastebin.com/f61ef4979 (original) | ||
| # http://pastebin.com/m4fe6bdaf (supports spaces in values) | ||
| # | ||
|
|
||
| # shellcheck disable=SC2206 | ||
| # shellcheck disable=SC2206,SC2116 | ||
| cfg_parser () | ||
| { | ||
| # IFS=$'\n' && ini=( $(<$1) ) # convert to line-array | ||
| mapfile ini <"${1:?Missing INI filename}" | ||
| ini=( ${ini[*]//;*/} ) # remove comments ; | ||
| ini=( ${ini[*]//\#*/} ) # remove comments # | ||
| ini=( ${ini[*]/\ =/=} ) # remove tabs before = | ||
| ini=( ${ini[*]/=\ /=} ) # remove tabs be = | ||
| ini=( ${ini[*]/\ *=\ /=} ) # remove anything with a space around = | ||
| ini=( ${ini[*]/#[/\}$'\n'cfg.section.} ) # set section prefix | ||
| ini=( ${ini[*]/%]/ \(} ) # convert text2function (1) | ||
| ini=( ${ini[*]/=/=\( } ) # convert item to array | ||
| ini=( ${ini[*]/%/ \)} ) # close array parenthesis | ||
| ini=( ${ini[*]/%\\ \)/ \\} ) # the multiline trick | ||
| ini=( ${ini[*]/%\( \)/\(\) \{} ) # convert text2function (2) | ||
| ini=( ${ini[*]/%\} \)/\}} ) # remove extra parenthesis | ||
| ini[0]="" # remove first element | ||
| ini[${#ini[*]} + 1]='}' # add the last brace | ||
| # shellcheck disable=SC2116 | ||
| eval "$(echo "${ini[*]}")" # eval the result | ||
| mapfile ini < "${1:?Missing INI filename}" # convert to line-array | ||
| ini=(${ini[*]//;*/}) # remove comments ; | ||
| ini=(${ini[*]//\#*/}) # remove comments # | ||
| ini=(${ini[*]/\ =/=}) # remove tabs before = | ||
| ini=(${ini[*]/=\ /=}) # remove tabs be = | ||
| ini=(${ini[*]/\ *=\ /=}) # remove anything with a space around = | ||
| ini=(${ini[*]/#[/\}$'\n'cfg.section.}) # set section prefix | ||
| ini=(${ini[*]/%]/ \(}) # convert text2function (1) | ||
| ini=(${ini[*]/=/=\( }) # convert item to array | ||
| ini=(${ini[*]/%/ \)}) # close array parenthesis | ||
| ini=(${ini[*]/%\\ \)/ \\}) # the multiline trick | ||
| ini=(${ini[*]/%\( \)/\(\) \{}) # convert text2function (2) | ||
| ini=(${ini[*]/%\} \)/\}}) # remove extra parenthesis | ||
| ini[0]="" # remove first element | ||
| ini[${#ini[*]} + 1]='}' # add the last brace | ||
| eval "$(echo "${ini[*]}")" # eval the result | ||
| } | ||
|
|
||
| # echo a message to standard error (used for messages not intended | ||
|
|
@@ -56,58 +53,92 @@ echo_stderr () | |
| printf '%s\n' "$@" >&2 | ||
| } | ||
|
|
||
| # | ||
| # Set defaults | ||
| # See https://docs.aws.amazon.com/cli/latest/userguide/cli-configure-envvars.html | ||
| # | ||
| declare AWS_PROFILE CREDENTIALS | ||
| declare aws_access_key_id aws_secret_access_key aws_session_token | ||
| declare -i show_key show_secret show_session_token | ||
|
|
||
| CREDENTIALS="${AWS_SHARED_CREDENTIALS_FILE:-"$HOME/.aws/credentials"}" | ||
| AWS_PROFILE=${AWS_PROFILE:-${AWS_DEFAULT_PROFILE:-default}} | ||
| show_key=0 | ||
| show_secret=0 | ||
| show_session_token=0 | ||
|
|
||
| # | ||
| # Parse options | ||
| # | ||
|
|
||
| display_usage () | ||
| { | ||
| echo_stderr "Usage: $0 [--credentials=<path>] [--profile=<name>] [--key|--secret|--session-token]" | ||
| echo_stderr "" | ||
| echo_stderr " Default --credentials is '${HOME}/.aws/credentials'" | ||
| echo_stderr " Default --profile is 'default'" | ||
| echo_stderr "" | ||
| echo_stderr " By default environment variables are generated, e.g." | ||
| echo_stderr " source \$($0 --profile=${PROFILE:-myprofile})" | ||
| echo_stderr "" | ||
| echo_stderr " You can specify one of --key, --secret, -or --session-token to get just that value, with no line break:" | ||
| echo_stderr " FOO_KEY=\$($0 --profile=${PROFILE:-myprofile} --key)" | ||
| echo_stderr " FOO_SECRET=\$($0 --profile=${PROFILE:-myprofile} --secret)" | ||
| echo_stderr " FOO_SESSION_TOKEN=\$($0 --profile=${PROFILE:-myprofile} --session-token)" | ||
| echo_stderr "Usage: $script_name [--credentials=<path>] [--profile=<name>] [--key|--secret|--session-token] | ||
| Options: | ||
| -p, --profile use profile | ||
| -f, --credentials read credentials from specified file | ||
| -k, --key get value of aws_access_key_id | ||
| -s, --secret get value of aws_secret_access_key | ||
| -t, --session-token get value of aws_session_token | ||
| -h, --help display this help text | ||
| Default --credentials is '\$AWS_SHARED_CREDENTIALS_FILE' or '~/.aws/credentials' | ||
| Default --profile is '\$AWS_DEFAULT_PROFILE' or 'default' | ||
| To generate environment variables for profile myprofile: | ||
| \$ source \$($script_name --profile=myprofile) | ||
| You can specify one of --key, --secret or --session-token to | ||
| get just that value, with no line break: | ||
| \$ FOO_KEY=\$($script_name --profile myprofile --key) | ||
| \$ FOO_SECRET=\$($script_name -p myprofile -s) | ||
| \$ FOO_SESSION_TOKEN=\$($script_name -t --profile=myprofile)" | ||
| } | ||
|
|
||
| for i in "$@" | ||
| do | ||
| case $i in | ||
| -c=*|-f=*|--credentials=*) | ||
| --credentials=*) | ||
| CREDENTIALS="${i#*=}" | ||
| shift # past argument=value | ||
| ;; | ||
| -p=*|--profile=*) | ||
| PROFILE="${i#*=}" | ||
| -f | --credentials) | ||
| CREDENTIALS="${2}" | ||
| shift 2 # past argument value | ||
| ;; | ||
| --profile=*) | ||
| AWS_PROFILE="${i#*=}" | ||
| shift # past argument=value | ||
| ;; | ||
| -k|--key) | ||
| SHOW_KEY=true | ||
| -p | --profile) | ||
| AWS_PROFILE="${2}" | ||
| shift 2 # past argument value | ||
| ;; | ||
| -k | --key) | ||
| show_key=1 | ||
| shift # past argument with no value | ||
| ;; | ||
| -s|--secret) | ||
| SHOW_SECRET=true | ||
| -s | --secret) | ||
| show_secret=1 | ||
| shift # past argument with no value | ||
| ;; | ||
| -t|--session-token) | ||
| SHOW_SESSION_TOKEN=true | ||
| -t | --session-token) | ||
| show_session_token=1 | ||
| shift # past argument with no value | ||
| ;; | ||
| -h*|--h*) | ||
| -h | --help) | ||
| display_usage | ||
| exit 0 | ||
| exit 64 | ||
| ;; | ||
| *) | ||
| # unknown option | ||
| echo_stderr "Unknown option $1" | ||
| echo_stderr "Unknown option $i" | ||
| display_usage | ||
| exit 1 | ||
| exit 64 | ||
| ;; | ||
| esac | ||
| done | ||
|
|
@@ -116,16 +147,10 @@ done | |
| # Check options | ||
| # | ||
|
|
||
| CREDENTIALS="${CREDENTIALS:-"${HOME}/.aws/credentials"}" | ||
| PROFILE=${PROFILE:-default} | ||
| SHOW_KEY=${SHOW_KEY:-false} | ||
| SHOW_SECRET=${SHOW_SECRET:-false} | ||
| SHOW_SESSION_TOKEN=${SHOW_SESSION_TOKEN:-false} | ||
|
|
||
| if [[ "${SHOW_KEY}" = true && "${SHOW_SECRET}" = true ]]; then | ||
| echo_stderr "Can only specify one of --key or --secret" | ||
| if [[ $((show_key + show_secret + show_session_token)) -gt 1 ]]; then | ||
| echo_stderr "Can only specify one of --key,--secret or --session-token" | ||
| display_usage | ||
| exit 2 | ||
| exit 64 | ||
| fi | ||
|
|
||
| # | ||
|
|
@@ -142,26 +167,32 @@ if ! cfg_parser "${CREDENTIALS}"; then | |
| exit 4 | ||
| fi | ||
|
|
||
| if ! cfg.section."${PROFILE}" >/dev/null; then | ||
| echo_stderr "Profile '${PROFILE}' not found" | ||
| if ! cfg.section."${AWS_PROFILE}" 2> /dev/null; then | ||
| echo_stderr "Profile '${AWS_PROFILE}' not found" | ||
| exit 5 | ||
| fi | ||
|
|
||
| # shellcheck disable=SC2154 | ||
| if [[ "${SHOW_KEY}" = false && "${SHOW_SECRET}" = false && "${SHOW_SESSION_TOKEN}" = false ]]; then | ||
| echo_stderr "# Profile: ${PROFILE}" | ||
| if ! ((show_key + show_secret + show_session_token)); then | ||
| echo_stderr "# Profile '${AWS_PROFILE}'" | ||
| printf 'export AWS_ACCESS_KEY_ID=%s\n' "${aws_access_key_id}" | ||
| printf 'export AWS_SECRET_ACCESS_KEY=%s\n' "${aws_secret_access_key}" | ||
| printf 'export AWS_SESSION_TOKEN=%s\n' "${aws_session_token}" | ||
| elif [[ "${SHOW_KEY}" = true ]]; then | ||
| elif ((show_key)); then | ||
| printf '%s' "${aws_access_key_id}" | ||
| elif [[ "${SHOW_SECRET}" = true ]]; then | ||
| elif ((show_secret)); then | ||
| printf '%s' "${aws_secret_access_key}" | ||
| elif [[ "${SHOW_SESSION_TOKEN}" = true ]]; then | ||
| elif ((show_session_token)); then | ||
| printf '%s' "${aws_session_token}" | ||
| else | ||
| echo_stderr "Unknown error" | ||
| exit 9 | ||
| fi | ||
|
|
||
| unset -v CREDENTIALS | ||
| unset -v show_key show_secret show_session_token | ||
| unset -v aws_access_key_id aws_secret_access_key aws_session_token | ||
|
|
||
| exit 0 | ||
|
|
||
| # vim: tabstop=2 shiftwidth=2 expandtab filetype=sh syntax=sh | ||