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#!/usr/bin/ksh93
#
# CDDL HEADER START
#
# The contents of this file are subject to the terms of the
# Common Development and Distribution License (the "License").
# You may not use this file except in compliance with the License.
#
# You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
# or http://www.opensolaris.org/os/licensing.
# See the License for the specific language governing permissions
# and limitations under the License.
#
# When distributing Covered Code, include this CDDL HEADER in each
# file and include the License file at usr/src/OPENSOLARIS.LICENSE.
# If applicable, add the following below this CDDL HEADER, with the
# fields enclosed by brackets "[]" replaced with your own identifying
# information: Portions Copyright [yyyy] [name of copyright owner]
#
# CDDL HEADER END
#
#
# Copyright 2008 Sun Microsystems, Inc. All rights reserved.
# Use is subject to license terms.
#
# Solaris needs /usr/xpg6/bin:/usr/xpg4/bin because the tools in /usr/bin are not POSIX-conformant
export PATH=/usr/xpg6/bin:/usr/xpg4/bin:/bin:/usr/bin
# Make sure all math stuff runs in the "C" locale to avoid problems
# with alternative # radix point representations (e.g. ',' instead of
# '.' in de_DE.*-locales). This needs to be set _before_ any
# floating-point constants are defined in this script).
if [[ "${LC_ALL}" != "" ]] ; then
export \
LC_MONETARY="${LC_ALL}" \
LC_MESSAGES="${LC_ALL}" \
LC_COLLATE="${LC_ALL}" \
LC_CTYPE="${LC_ALL}"
unset LC_ALL
fi
export LC_NUMERIC=C
function fatal_error
{
print -u2 "${progname}: $*"
exit 1
}
# parse HTTP return code, cookies etc.
function parse_http_response
{
nameref response="$1"
typeset h statuscode statusmsg i
# we use '\r' as additional IFS to filter the final '\r'
IFS=$' \t\r' read -r h statuscode statusmsg # read HTTP/1.[01] <code>
[[ "$h" != ~(Eil)HTTP/.* ]] && { print -u2 -f $"%s: HTTP/ header missing\n" "$0" ; return 1 ; }
[[ "$statuscode" != ~(Elr)[0-9]* ]] && { print -u2 -f $"%s: invalid status code\n" "$0" ; return 1 ; }
response.statuscode="$statuscode"
response.statusmsg="$statusmsg"
# skip remaining headers
while IFS='' read -r i ; do
[[ "$i" == $'\r' ]] && break
# strip '\r' at the end
i="${i/~(Er)$'\r'/}"
case "$i" in
~(Eli)Content-Type:.*)
response.content_type="${i/~(El).*:[[:blank:]]*/}"
;;
~(Eli)Content-Length:[[:blank:]]*[0-9]*)
integer response.content_length="${i/~(El).*:[[:blank:]]*/}"
;;
~(Eli)Transfer-Encoding:.*)
response.transfer_encoding="${i/~(El).*:[[:blank:]]*/}"
;;
esac
done
return 0
}
function cat_http_body
{
typeset emode="$1"
typeset hexchunksize="0"
integer chunksize=0
if [[ "${emode}" == "chunked" ]] ; then
while IFS=$'\r' read hexchunksize &&
[[ "${hexchunksize}" == ~(Elri)[0-9abcdef]* ]] &&
(( chunksize=16#${hexchunksize} )) && (( chunksize > 0 )) ; do
dd bs=1 count="${chunksize}" 2>/dev/null
done
else
cat
fi
return 0
}
function request_tinyurl
{
# site setup
typeset url_host="tinyurl.com"
typeset url_path="/api-create.php"
typeset url="http://${url_host}${url_path}"
integer netfd # http stream number
typeset inputurl="$1"
typeset -C httpresponse # http response
typeset request=""
# we assume "inputurl" is a correctly encoded URL which doesn't
# require any further mangling
url_path+="?url=${inputurl}"
request="GET ${url_path} HTTP/1.1\r\n"
request+="Host: ${url_host}\r\n"
request+="User-Agent: ${http_user_agent}\r\n"
request+="Connection: close\r\n"
redirect {netfd}<>"/dev/tcp/${url_host}/80"
(( $? != 0 )) && { print -u2 -f $"%s: Couldn't open connection to %s.\n" "$0" "${url_host}" ; return 1 ; }
# send http post
{
print -n -- "${request}\r\n"
} >&${netfd}
# process reply
parse_http_response httpresponse <&${netfd}
response="${ cat_http_body "${httpresponse.transfer_encoding}" <&${netfd} ; }"
# close connection
redirect {netfd}<&-
if (( httpresponse.statuscode >= 200 && httpresponse.statuscode <= 299 )) ; then
print -r -- "${response}"
return 0
else
print -u2 -f $"tinyurl response was (%s,%s):\n%s\n" "${httpresponse.statuscode}" "${httpresponse.statusmsg}" "${response}"
return 1
fi
# not reached
}
function usage
{
OPTIND=0
getopts -a "${progname}" "${shtinyurl_usage}" OPT '-?'
exit 2
}
# program start
builtin basename
builtin cat
builtin date
builtin uname
typeset progname="${ basename "${0}" ; }"
# HTTP protocol client identifer
typeset -r http_user_agent="shtinyurl/ksh93 (2008-10-14; ${ uname -s -r -p ; })"
typeset -r shtinyurl_usage=$'+
[-?\n@(#)\$Id: shtinyurl (Roland Mainz) 2008-10-14 \$\n]
[-author?Roland Mainz <roland.mainz@nrubsig.org>]
[+NAME?shtinyurl - create short tinyurl.com alias URL from long URL]
[+DESCRIPTION?\bshtinyurl\b is a small utility which passes a given URL
to the tinyurl.com service which creates short aliases in the
form of http://tinyurl.com/XXXXXXXX to redirect long URLs.]
[+?The first arg \burl\b describes a long URL which is transformed into
a tinyurl.com short alias.]
url
[+SEE ALSO?\bksh93\b(1), \brssread\b(1), \bshtwitter\b(1), http://www.tinyurl.com]
'
while getopts -a "${progname}" "${shtinyurl_usage}" OPT ; do
# printmsg "## OPT=|${OPT}|, OPTARG=|${OPTARG}|"
case ${OPT} in
*) usage ;;
esac
done
shift $((OPTIND-1))
# expecting at least one more argument
(($# >= 1)) || usage
typeset url="$1"
shift
request_tinyurl "${url}"
exit $?
# EOF.
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