ssh-copy-id revision 255670
1180740Sdes#!/bin/sh 2180740Sdes 3248613Sdes# Copyright (c) 1999-2013 Philip Hands <phil@hands.com> 4248613Sdes# 2013 Martin Kletzander <mkletzan@redhat.com> 5248613Sdes# 2010 Adeodato =?iso-8859-1?Q?Sim=F3?= <asp16@alu.ua.es> 6248613Sdes# 2010 Eric Moret <eric.moret@gmail.com> 7248613Sdes# 2009 Xr <xr@i-jeuxvideo.com> 8248613Sdes# 2007 Justin Pryzby <justinpryzby@users.sourceforge.net> 9248613Sdes# 2004 Reini Urban <rurban@x-ray.at> 10248613Sdes# 2003 Colin Watson <cjwatson@debian.org> 11248613Sdes# All rights reserved. 12248613Sdes# 13248613Sdes# Redistribution and use in source and binary forms, with or without 14248613Sdes# modification, are permitted provided that the following conditions 15248613Sdes# are met: 16248613Sdes# 1. Redistributions of source code must retain the above copyright 17248613Sdes# notice, this list of conditions and the following disclaimer. 18248613Sdes# 2. Redistributions in binary form must reproduce the above copyright 19248613Sdes# notice, this list of conditions and the following disclaimer in the 20248613Sdes# documentation and/or other materials provided with the distribution. 21248613Sdes# 22248613Sdes# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 23248613Sdes# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 24248613Sdes# OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 25248613Sdes# IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 26248613Sdes# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 27248613Sdes# NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 28248613Sdes# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 29248613Sdes# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 30248613Sdes# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 31248613Sdes# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 32180740Sdes 33248613Sdes# Shell script to install your public key(s) on a remote machine 34248613Sdes# See the ssh-copy-id(1) man page for details 35180740Sdes 36248613Sdes# check that we have something mildly sane as our shell, or try to find something better 37248613Sdesif false ^ printf "%s: WARNING: ancient shell, hunting for a more modern one... " "$0" 38248613Sdesthen 39248613Sdes SANE_SH=${SANE_SH:-/usr/bin/ksh} 40248613Sdes if printf 'true ^ false\n' | "$SANE_SH" 41248613Sdes then 42248613Sdes printf "'%s' seems viable.\n" "$SANE_SH" 43248613Sdes exec "$SANE_SH" "$0" "$@" 44248613Sdes else 45248613Sdes cat <<-EOF 46248613Sdes oh dear. 47248613Sdes 48248613Sdes If you have a more recent shell available, that supports \$(...) etc. 49248613Sdes please try setting the environment variable SANE_SH to the path of that 50248613Sdes shell, and then retry running this script. If that works, please report 51248613Sdes a bug describing your setup, and the shell you used to make it work. 52248613Sdes 53248613Sdes EOF 54248613Sdes printf "%s: ERROR: Less dimwitted shell required.\n" "$0" 55248613Sdes exit 1 56180740Sdes fi 57248613Sdesfi 58248613Sdes 59248613SdesDEFAULT_PUB_ID_FILE=$(ls -t ${HOME}/.ssh/id*.pub 2>/dev/null | grep -v -- '-cert.pub$' | head -n 1) 60248613Sdes 61248613Sdesusage () { 62248613Sdes printf 'Usage: %s [-h|-?|-n] [-i [identity_file]] [-p port] [[-o <ssh -o options>] ...] [user@]hostname\n' "$0" >&2 63248613Sdes exit 1 64248613Sdes} 65248613Sdes 66248613Sdes# escape any single quotes in an argument 67248613Sdesquote() { 68248613Sdes printf "%s\n" "$1" | sed -e "s/'/'\\\\''/g" 69248613Sdes} 70248613Sdes 71248613Sdesuse_id_file() { 72248613Sdes local L_ID_FILE="$1" 73248613Sdes 74248613Sdes if expr "$L_ID_FILE" : ".*\.pub$" >/dev/null ; then 75248613Sdes PUB_ID_FILE="$L_ID_FILE" 76248613Sdes else 77248613Sdes PUB_ID_FILE="$L_ID_FILE.pub" 78180740Sdes fi 79248613Sdes 80248613Sdes PRIV_ID_FILE=$(dirname "$PUB_ID_FILE")/$(basename "$PUB_ID_FILE" .pub) 81248613Sdes 82248613Sdes # check that the files are readable 83248613Sdes for f in $PUB_ID_FILE $PRIV_ID_FILE ; do 84248613Sdes ErrMSG=$( { : < $f ; } 2>&1 ) || { 85248613Sdes printf "\n%s: ERROR: failed to open ID file '%s': %s\n\n" "$0" "$f" "$(printf "%s\n" "$ErrMSG" | sed -e 's/.*: *//')" 86248613Sdes exit 1 87248613Sdes } 88248613Sdes done 89248613Sdes GET_ID="cat \"$PUB_ID_FILE\"" 90248613Sdes} 91248613Sdes 92248613Sdesif [ -n "$SSH_AUTH_SOCK" ] && ssh-add -L >/dev/null 2>&1 ; then 93248613Sdes GET_ID="ssh-add -L" 94180740Sdesfi 95180740Sdes 96248613Sdeswhile test "$#" -gt 0 97248613Sdesdo 98248613Sdes [ "${SEEN_OPT_I}" ] && expr "$1" : "[-]i" >/dev/null && { 99248613Sdes printf "\n%s: ERROR: -i option must not be specified more than once\n\n" "$0" 100248613Sdes usage 101248613Sdes } 102248613Sdes 103248613Sdes OPT= OPTARG= 104248613Sdes # implement something like getopt to avoid Solaris pain 105248613Sdes case "$1" in 106248613Sdes -i?*|-o?*|-p?*) 107248613Sdes OPT="$(printf -- "$1"|cut -c1-2)" 108248613Sdes OPTARG="$(printf -- "$1"|cut -c3-)" 109248613Sdes shift 110248613Sdes ;; 111248613Sdes -o|-p) 112248613Sdes OPT="$1" 113248613Sdes OPTARG="$2" 114248613Sdes shift 2 115248613Sdes ;; 116248613Sdes -i) 117248613Sdes OPT="$1" 118248613Sdes test "$#" -le 2 || expr "$2" : "[-]" >/dev/null || { 119248613Sdes OPTARG="$2" 120248613Sdes shift 121248613Sdes } 122248613Sdes shift 123248613Sdes ;; 124248613Sdes -n|-h|-\?) 125248613Sdes OPT="$1" 126248613Sdes OPTARG= 127248613Sdes shift 128248613Sdes ;; 129248613Sdes --) 130248613Sdes shift 131248613Sdes while test "$#" -gt 0 132248613Sdes do 133248613Sdes SAVEARGS="${SAVEARGS:+$SAVEARGS }'$(quote "$1")'" 134248613Sdes shift 135248613Sdes done 136248613Sdes break 137248613Sdes ;; 138248613Sdes -*) 139248613Sdes printf "\n%s: ERROR: invalid option (%s)\n\n" "$0" "$1" 140248613Sdes usage 141248613Sdes ;; 142248613Sdes *) 143248613Sdes SAVEARGS="${SAVEARGS:+$SAVEARGS }'$(quote "$1")'" 144248613Sdes shift 145248613Sdes continue 146248613Sdes ;; 147248613Sdes esac 148248613Sdes 149248613Sdes case "$OPT" in 150248613Sdes -i) 151248613Sdes SEEN_OPT_I="yes" 152248613Sdes use_id_file "${OPTARG:-$DEFAULT_PUB_ID_FILE}" 153248613Sdes ;; 154248613Sdes -o|-p) 155248613Sdes SSH_OPTS="${SSH_OPTS:+$SSH_OPTS }$OPT '$(quote "$OPTARG")'" 156248613Sdes ;; 157248613Sdes -n) 158248613Sdes DRY_RUN=1 159248613Sdes ;; 160248613Sdes -h|-\?) 161248613Sdes usage 162248613Sdes ;; 163248613Sdes esac 164248613Sdesdone 165248613Sdes 166248613Sdeseval set -- "$SAVEARGS" 167248613Sdes 168255670Sdesif [ $# = 0 ] ; then 169250737Sdes usage 170250737Sdesfi 171248613Sdesif [ $# != 1 ] ; then 172248613Sdes printf '%s: ERROR: Too many arguments. Expecting a target hostname, got: %s\n\n' "$0" "$SAVEARGS" >&2 173248613Sdes usage 174180740Sdesfi 175180740Sdes 176248613Sdes# drop trailing colon 177248613SdesUSER_HOST=$(printf "%s\n" "$1" | sed 's/:$//') 178248613Sdes# tack the hostname onto SSH_OPTS 179248613SdesSSH_OPTS="${SSH_OPTS:+$SSH_OPTS }'$(quote "$USER_HOST")'" 180248613Sdes# and populate "$@" for later use (only way to get proper quoting of options) 181248613Sdeseval set -- "$SSH_OPTS" 182248613Sdes 183248613Sdesif [ -z "$(eval $GET_ID)" ] && [ -r "${PUB_ID_FILE:=$DEFAULT_PUB_ID_FILE}" ] ; then 184248613Sdes use_id_file "$PUB_ID_FILE" 185180740Sdesfi 186180740Sdes 187248613Sdesif [ -z "$(eval $GET_ID)" ] ; then 188248613Sdes printf '%s: ERROR: No identities found\n' "$0" >&2 189180740Sdes exit 1 190180740Sdesfi 191180740Sdes 192248613Sdes# populate_new_ids() uses several global variables ($USER_HOST, $SSH_OPTS ...) 193248613Sdes# and has the side effect of setting $NEW_IDS 194248613Sdespopulate_new_ids() { 195248613Sdes local L_SUCCESS="$1" 196180740Sdes 197248613Sdes # repopulate "$@" inside this function 198248613Sdes eval set -- "$SSH_OPTS" 199214979Sdes 200248613Sdes umask 0177 201248613Sdes local L_TMP_ID_FILE=$(mktemp ~/.ssh/ssh-copy-id_id.XXXXXXXXXX) 202250737Sdes if test $? -ne 0 || test "x$L_TMP_ID_FILE" = "x" ; then 203250737Sdes echo "mktemp failed" 1>&2 204250737Sdes exit 1 205250737Sdes fi 206250737Sdes trap "rm -f $L_TMP_ID_FILE ${L_TMP_ID_FILE}.pub" EXIT TERM INT QUIT 207248613Sdes printf '%s: INFO: attempting to log in with the new key(s), to filter out any that are already installed\n' "$0" >&2 208248613Sdes NEW_IDS=$( 209248613Sdes eval $GET_ID | { 210248613Sdes while read ID ; do 211248613Sdes printf '%s\n' "$ID" > $L_TMP_ID_FILE 212180740Sdes 213248613Sdes # the next line assumes $PRIV_ID_FILE only set if using a single id file - this 214248613Sdes # assumption will break if we implement the possibility of multiple -i options. 215248613Sdes # The point being that if file based, ssh needs the private key, which it cannot 216248613Sdes # find if only given the contents of the .pub file in an unrelated tmpfile 217248613Sdes ssh -i "${PRIV_ID_FILE:-$L_TMP_ID_FILE}" \ 218248613Sdes -o PreferredAuthentications=publickey \ 219248613Sdes -o IdentitiesOnly=yes "$@" exit 2>$L_TMP_ID_FILE.stderr </dev/null 220248613Sdes if [ "$?" = "$L_SUCCESS" ] ; then 221248613Sdes : > $L_TMP_ID_FILE 222248613Sdes else 223248613Sdes grep 'Permission denied' $L_TMP_ID_FILE.stderr >/dev/null || { 224248613Sdes sed -e 's/^/ERROR: /' <$L_TMP_ID_FILE.stderr >$L_TMP_ID_FILE 225248613Sdes cat >/dev/null #consume the other keys, causing loop to end 226248613Sdes } 227248613Sdes fi 228180740Sdes 229248613Sdes cat $L_TMP_ID_FILE 230248613Sdes done 231248613Sdes } 232248613Sdes ) 233248613Sdes rm -f $L_TMP_ID_FILE* && trap - EXIT TERM INT QUIT 234180740Sdes 235248613Sdes if expr "$NEW_IDS" : "^ERROR: " >/dev/null ; then 236248613Sdes printf '\n%s: %s\n\n' "$0" "$NEW_IDS" >&2 237248613Sdes exit 1 238248613Sdes fi 239248613Sdes if [ -z "$NEW_IDS" ] ; then 240248613Sdes printf '\n%s: WARNING: All keys were skipped because they already exist on the remote system.\n\n' "$0" >&2 241248613Sdes exit 0 242248613Sdes fi 243248613Sdes printf '%s: INFO: %d key(s) remain to be installed -- if you are prompted now it is to install the new keys\n' "$0" "$(printf '%s\n' "$NEW_IDS" | wc -l)" >&2 244248613Sdes} 245214979Sdes 246248613SdesREMOTE_VERSION=$(ssh -v -o PreferredAuthentications=',' "$@" 2>&1 | 247248613Sdes sed -ne 's/.*remote software version //p') 248248613Sdes 249248613Sdescase "$REMOTE_VERSION" in 250248613Sdes NetScreen*) 251248613Sdes populate_new_ids 1 252248613Sdes for KEY in $(printf "%s" "$NEW_IDS" | cut -d' ' -f2) ; do 253248613Sdes KEY_NO=$(($KEY_NO + 1)) 254248613Sdes printf "%s\n" "$KEY" | grep ssh-dss >/dev/null || { 255248613Sdes printf '%s: WARNING: Non-dsa key (#%d) skipped (NetScreen only supports DSA keys)\n' "$0" "$KEY_NO" >&2 256248613Sdes continue 257248613Sdes } 258248613Sdes [ "$DRY_RUN" ] || printf 'set ssh pka-dsa key %s\nsave\nexit\n' "$KEY" | ssh -T "$@" >/dev/null 2>&1 259248613Sdes if [ $? = 255 ] ; then 260248613Sdes printf '%s: ERROR: installation of key #%d failed (please report a bug describing what caused this, so that we can make this message useful)\n' "$0" "$KEY_NO" >&2 261248613Sdes else 262248613Sdes ADDED=$(($ADDED + 1)) 263248613Sdes fi 264248613Sdes done 265248613Sdes if [ -z "$ADDED" ] ; then 266248613Sdes exit 1 267248613Sdes fi 268248613Sdes ;; 269248613Sdes *) 270248613Sdes # Assuming that the remote host treats ~/.ssh/authorized_keys as one might expect 271248613Sdes populate_new_ids 0 272248613Sdes [ "$DRY_RUN" ] || printf '%s\n' "$NEW_IDS" | ssh "$@" " 273248613Sdes umask 077 ; 274248613Sdes mkdir -p .ssh && cat >> .ssh/authorized_keys || exit 1 ; 275248613Sdes if type restorecon >/dev/null 2>&1 ; then restorecon -F .ssh .ssh/authorized_keys ; fi" \ 276248613Sdes || exit 1 277248613Sdes ADDED=$(printf '%s\n' "$NEW_IDS" | wc -l) 278248613Sdes ;; 279248613Sdesesac 280248613Sdes 281248613Sdesif [ "$DRY_RUN" ] ; then 282248613Sdes cat <<-EOF 283248613Sdes =-=-=-=-=-=-=-= 284248613Sdes Would have added the following key(s): 285248613Sdes 286248613Sdes $NEW_IDS 287248613Sdes =-=-=-=-=-=-=-= 288248613Sdes EOF 289248613Sdeselse 290248613Sdes cat <<-EOF 291248613Sdes 292248613Sdes Number of key(s) added: $ADDED 293248613Sdes 294248613Sdes Now try logging into the machine, with: "ssh $SSH_OPTS" 295248613Sdes and check to make sure that only the key(s) you wanted were added. 296248613Sdes 297248613Sdes EOF 298248613Sdesfi 299248613Sdes 300248613Sdes# =-=-=-= 301