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117 lines
4.0 KiB
Bash
117 lines
4.0 KiB
Bash
#!/usr/bin/env bash
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# vim:ts=4:sts=4:sw=4:et
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#
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# Author: Hari Sekhon
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# Date: 2020-06-23 17:59:52 +0100 (Tue, 23 Jun 2020)
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#
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# https://github.com/harisekhon/bash-tools
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#
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# License: see accompanying Hari Sekhon LICENSE file
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#
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# If you're using my code you're welcome to connect with me on LinkedIn and optionally send me feedback to help steer this or other code I publish
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#
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# https://www.linkedin.com/in/harisekhon
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#
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set -euo pipefail
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[ -n "${DEBUG:-}" ] && set -x
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srcdir="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
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# used by usage() in lib/utils.sh
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# shellcheck disable=SC2034
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usage_args="[<curl_options>]"
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# shellcheck disable=SC2034
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usage_description="
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Returns a Spotify access token from the Spotify API
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Requires \$SPOTIFY_CLIENT_ID and \$SPOTIFY_CLIENT_SECRET to be defined in the environment
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Generate an App client ID and secret here:
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https://developer.spotify.com/dashboard/applications
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"
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# shellcheck disable=SC1090
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. "$srcdir/lib/utils.sh"
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help_usage "$@"
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check_env_defined "SPOTIFY_CLIENT_ID"
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check_env_defined "SPOTIFY_CLIENT_SECRET"
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# encode spaces as %20 or +
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scope="${SPOTIFY_TOKEN_SCOPE:-
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app-remote-control
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playlist-modify-private
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playlist-modify-public
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playlist-read-collaborative
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playlist-read-private
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streaming
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user-follow-modify
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user-follow-read
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user-library-modify
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user-library-read
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user-modify-playback-state
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user-read-currently-playing
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user-read-email
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user-read-playback-position
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user-read-playback-state
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user-read-private
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user-read-recently-played
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user-top-read
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}
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"
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# perl -pe doesn't really work here, hard to remove leading/trailing ++ without slurp to real var
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#scope="$(perl -e '$str = do { local $/; <STDIN> }; $str =~ s/\s+/\+/g; $str =~ s/^\++//; $str =~ s/\++$//; print $str' <<< "$scope")"
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# simpler
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scope="$(tr '\n' '+' <<< "$scope" | sed 's/^+//; s/+*$//')"
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# ============================================================================ #
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# Client Credentials method - the most suitable to scripting but doesn't grant access to user data :-/
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#
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# https://developer.spotify.com/documentation/general/guides/authorization-guide/#client-credentials-flow
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#
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output="$(curl -sSL -u "$SPOTIFY_CLIENT_ID:$SPOTIFY_CLIENT_SECRET" -X 'POST' -d 'grant_type=client_credentials' -d "scope=$scope" https://accounts.spotify.com/api/token "$@")"
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# ============================================================================ #
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# These next 3 methods won't never work because it relies on live Login challenge - only relevant to webapps
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#redirect_uri="https:%2F%2Fgithub.com%2Fharisekhon"
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# ============================================================================ #
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# Authorization Code Flow
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#
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# https://developer.spotify.com/documentation/general/guides/authorization-guide/#authorization-code-flow
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#
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#output="$(curl -sSL -X GET "https://accounts.spotify.com/authorize?client_id=$SPOTIFY_CLIENT_ID&redirect_uri=$redirect_uri&scope=$scope&response_type=code")"
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# ============================================================================ #
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# Authorization Code Flow with Proof Key for Code Exchange (PKCE)
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#
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# https://developer.spotify.com/documentation/general/guides/authorization-guide/#authorization-code-flow-with-proof-key-for-code-exchange-pkce
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#
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#if [ "$(uname -s)" = Darwin ]; then
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# sha1sum(){
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# command shasum "$@"
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# }
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#fi
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#code_challenge="$("$srcdir/random_string.sh" 128 | sha1sum -a 256 | base64)"
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#output="$(curl -sSL -X GET "https://accounts.spotify.com/authorize?client_id=$SPOTIFY_CLIENT_ID&redirect_uri=$redirect_uri&scope=$scope&response_type=code&code_challenge_method=S256&code_challenge=$code_challenge")"
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# ============================================================================ #
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# Implicit Grant Method
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#
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# https://developer.spotify.com/documentation/general/guides/authorization-guide/#implicit-grant-flow
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#
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#output="$(curl -sSL -X GET "https://accounts.spotify.com/authorize?client_id=$SPOTIFY_CLIENT_ID&redirect_uri=$redirect_uri&scope=$scope&response_type=token")"
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# shellcheck disable=SC2181
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if [ $? != 0 ] || [[ "$output" =~ error_description ]]; then
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echo "$output" >&2
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exit 1
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fi
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jq -r '.access_token' <<< "$output"
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