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[FreeBSD/stable/10.git] / usr.bin / ssh-copy-id / ssh-copy-id.sh
1 #!/bin/sh
2 #-
3 # Copyright (c) 2012 Eitan Adler
4 # All rights reserved.
5 #
6 # Redistribution and use in source and binary forms, with or without
7 # modification, are permitted provided that the following conditions
8 # are met:
9 # 1. Redistributions of source code must retain the above copyright
10 #    notice, this list of conditions and the following disclaimer
11 #    in this position and unchanged.
12 # 2. Redistributions in binary form must reproduce the above copyright
13 #    notice, this list of conditions and the following disclaimer in the
14 #    documentation and/or other materials provided with the distribution.
15 #
16 # THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17 # ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 # IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 # ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20 # FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 # DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 # OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 # HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 # LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 # OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 # SUCH DAMAGE.
27 #
28 # $FreeBSD$
29
30 usage() {
31         echo "usage: ssh-copy-id [-l] [-i keyfile] [-o option] [-p port] [user@]hostname" >&2
32         exit 1
33 }
34
35 sendkey() {
36         local h="$1"
37         local k="$2"
38         printf "%s\n" "$k" | ssh $port -S none $options "$user$h" /bin/sh -c \'' \
39                 set -e; \
40                 umask 077; \
41                 keyfile=$HOME/.ssh/authorized_keys ; \
42                 mkdir -p -- "$HOME/.ssh/" ; \
43                 while read alg key comment ; do \
44                         [ -n "$key" ] || continue; \
45                         if ! grep -sqwF "$key" "$keyfile"; then \
46                                 printf "$alg $key $comment\n" >> "$keyfile" ; \
47                         fi ; \
48                 done \
49         '\' 
50 }
51
52 agentKeys() {
53         keys="$(ssh-add -L | grep -v 'The agent has no identities.')$nl$keys"
54 }
55
56 keys=""
57 host=""
58 hasarg=""
59 user=""
60 port=""
61 nl="
62 "
63 options=""
64
65 IFS=$nl
66
67 while getopts 'i:lo:p:' arg; do
68         case $arg in
69         i)      
70                 hasarg="x"
71                 if [ -r "$OPTARG" ]; then
72                         keys="$(cat -- "$OPTARG")$nl$keys"
73                 else
74                         echo "File $OPTARG not found" >&2
75                         exit 1
76                 fi
77                 ;;
78         l)      
79                 hasarg="x"
80                 agentKeys
81                 ;;
82         p)      
83                 port=-p$nl$OPTARG
84                 ;;
85         o)      
86                 options=$options$nl-o$nl$OPTARG
87                 ;;
88         *)      
89                 usage
90                 ;;
91         esac
92 done >&2
93
94 shift $((OPTIND-1))
95
96 if [ -z "$hasarg" ]; then
97         agentKeys
98 fi
99 if [ -z "$keys" ] || [ "$keys" = "$nl" ]; then
100         echo "no keys found" >&2
101         exit 1
102 fi
103 if [ "$#" -eq 0 ]; then
104         usage
105 fi
106
107 for host in "$@"; do
108         sendkey "$host" "$keys"
109 done