/usr/share/charm-helper/sh/net.sh is in charm-helper-sh 0.3+121-0ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 | #!/bin/sh
##
# Copyright 2011 Marco Ceppi <marco@ceppi.net>
#
# This file is part of Charm Helpers.
#
# Charm Helpers is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# Charm Helpers is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with Charm Helpers. If not, see <http://www.gnu.org/licenses/>.
##
##
# Globally overridable settings. Make sure to set them before sourcing
# this file.
CH_WGET_ARGS=${CH_WGET_ARGS:-"-q --content-disposition"}
##
# Get File
# Retrives a file and compares the file to a hash
#
# param FILE URL or Path to file
# param HASH URL, Path, or HASH string for file's hash
#
# return filepath|null
##
ch_get_file()
{
local FILE=${1:-""}
local HASH=${2:-""}
local CH_DOWNLOAD_DIR=${CH_DOWNLOAD_DIR:-"`mktemp -d /tmp/ch-downloads.XXXXXX`"}
if [ `ch_is_url "$FILE"` ]; then
wget $CH_WGET_ARGS --directory-prefix="$CH_DOWNLOAD_DIR/" "$FILE"
FILE=$CH_DOWNLOAD_DIR/$(ls -tr $CH_DOWNLOAD_DIR|head -n 1)
fi
if [ ! -f "$FILE" ]; then
return 2
fi
if [ -z "$HASH" ];then
#echo "Warning, no has specified. The file will be downloaded but not cryptographically checked!" > 2
echo "$FILE"
return 0
elif [ `ch_is_url "$HASH"` ]; then
local HASHNAME=$(basename $HASH)
wget $CH_WGET_ARGS "$HASH" -O /tmp/$HASHNAME
HASH=$(cat /tmp/$HASHNAME | awk '{ print $1 }')
elif [ -f "$HASH" ]; then
HASH=$(cat "$HASH" | awk '{ print $1 }')
fi
local HASH_TYPE=$(ch_type_hash $HASH)
if [ -z "$HASH_TYPE" ]; then
return 3
else
local FILE_HASH=$(${HASH_TYPE}sum $FILE | awk '{ print $1 }')
if [ "$FILE_HASH" != "$HASH" ]; then
return 4
fi
fi
echo "$FILE"
return 0
}
##
# Hash Type
# Determine, using best approximation, if the hash is valid and what type
# of hashing algorithm was used
#
# param HASH
#
# return type|false
##
ch_type_hash()
{
local DIRTY="$1"
case $DIRTY in
*[![:xdigit:]]* | "" )
echo ""
return 1
;;
* )
case ${#DIRTY} in
32 )
echo md5
;;
40 )
echo sha1
;;
64 )
echo sha256
;;
esac
;;
esac
}
##
# Is URL?
# Checks if the string passed is a valid URL (http(s), ftp)
#
# param URL The URL to be checked
#
# return boolean
##
ch_is_url()
{
local DIRTY="$1"
case "$DIRTY" in
"http://"* | "https://"* | "ftp://"*)
echo true
return 0
;;
*)
return 1
;;
esac
}
##
# Is IP?
# Checks if the string passed is an IP address
#
# param IP The IP addressed to be checked
#
# return boolean
##
ch_is_ip()
{
local DIRTY="$1"
local IP=$(echo $DIRTY | awk -F. '$1 <=255 && $2 <= 255 && $3 <= 255 && $4 <= 255 ')
if [ -z "$IP" ]; then
return 1
else
echo true
return 0
fi
}
##
# Get IP
# Returns the first IP match to the hostname provided
#
# param HOSTNAME Host for which to retrieve an IP
#
# return IP|false
##
ch_get_ip()
{
local HOST="$1"
#So, if there's multiple IP addresses, just grab the first
# for now.
local CHECK_IP=$(host -t A $HOST | awk 'NR==1{ print $4 }')
if [ ! `ch_is_ip "$CHECK_IP"` ]; then
# Try a dig, why not?
CHECK_IP=$(dig +short $HOST | awk 'NR==1{ print $1 }')
if [ ! `ch_is_ip "$CHECK_IP"` ]; then
return 1
fi
fi
echo $CHECK_IP
return 0
}
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