usptomo-tweet

#!/bin/bash
#
# usptomo-tweet.sh: twitterにメッセージを投げるシェルスクリプト
#
# written by R.Ueda (USP友の会) 20130916
#
# The MIT License
#
# Copyright (C) 2013-2015 Ryuichi Ueda
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
# THE SOFTWARE.
#
# 参考：http://www.kuropug.com/Shellscriptter/top.html

#中間ファイルの場所（/tmpが気にくわなければ他に変えること）
tmp=/tmp/$$
[ -z "$*" ] && exit 1

###################################
#変数の設定

#場所やファイル名はお好みで
source /etc/dev_twitter

#以下のファイルから変数が読み込まれます。
#+++twitter.key+++++++++++++++++++++++++++++++++++++++++++
#CONSUMER_KEY=xxxxxxxxxxxxxxxxxxxxxxxx
#CONSUMER_SECRET=xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
#ACCESS_TOKEN=xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
#ACCESS_TOKEN_SECRET=xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
#+++++++++++++++++++++++++++++++++++++++++++++++++++++++++

#エンコーディングルール
enc () {
	nkf -wMQx | sed 's/=$//' | tr '=' '%' | tr -d '\n' |
	sed -e 's/%7E/~/g' -e 's/%5F/_/g' -e 's/%2D/-/g' -e 's/%2E/./g'
}

#送信先
URL=https://api.twitter.com/1.1/statuses/update.json
ENC_URL=$(enc <<< "$URL")

#ツイートの読み込みとエンコード
TW=$(enc <<< "$*")

############################################
#パラメータ設定
cat << FIN > $tmp-params
oauth_consumer_key $CONSUMER_KEY
oauth_nonce $(date +%s%N)
oauth_signature_method HMAC-SHA1
oauth_timestamp $(date +%s)
oauth_token $ACCESS_TOKEN
oauth_version 1.0
status $TW
FIN

###############################################
#oauthシグネチャを作る

#署名キーを作成
echo "POST&"${ENC_URL}"&" > $tmp-head

sort $tmp-params		|
#行末に%26（アンド）をつけ、空白を%3D（イコール）に変換
sed -e 's/$/\&/' -e 's/ /=/'	|
enc				|
#一番最後の&をとる
sed 's/%26$//'			|
#頭に署名キーをつける
cat $tmp-head -			|
#改行が一個入ってしまうので取る
tr -d '\n'			|
#エンコード
openssl sha1 -hmac $CONSUMER_SECRET'&'$ACCESS_TOKEN_SECRET -binary	|
openssl base64			> $tmp-key

###############################################
#ヘッダ文字列の作成

enc < $tmp-key						|
awk '{print "oauth_signature",$0}' 			|
cat $tmp-params -					|
grep -v "^status"					|
sort							|
#項目 値の並びを改行して縦一列に並び替える
tr ' ' '\n'						|
#縦一列を今度は横一列にして 項目=値,項目=値,...の形式に
awk 'NR%2==1{print $1 "="}NR%2==0{print $1 ","}'	|
tr -d '\n'						|
#一番最後のカンマが余計
sed 's/,$//' 	> $tmp-header-str

#########################################
#出力!
curl -H "Authorization: OAuth $(cat $tmp-header-str)" \
     -d "status=$TW" "$URL"

rm -f $tmp-*