a8fd722139
git-svn-id: svn://svn.openwrt.org/openwrt/packages@11615 3c298f89-4303-0410-b956-a3cf2f4a3e73
127 lines
3.7 KiB
Bash
Executable File
127 lines
3.7 KiB
Bash
Executable File
#######################################################################
|
|
#/usr/lib/ddns/shell_get.sh
|
|
#
|
|
# Written by Eric Bishop, January 2008
|
|
# Distributed under the terms of the GNU General Public License (GPL) version 2.0
|
|
#
|
|
# This implements a wget-like program ("shell_get 1.0") that can handle
|
|
# basic http username/password authentication.
|
|
# It is implemented using the netcat (nc) utility.
|
|
# This is necessary because the default busybox wget
|
|
# does not include username/password functionality (it really sucks)
|
|
##########################################################################
|
|
|
|
to_ascii()
|
|
{
|
|
dec=$1
|
|
hex=""
|
|
if [ $dec -lt 26 ]; then
|
|
hex=$(($dec + 0x41))
|
|
elif [ $dec -ge 26 ] && [ $dec -lt 52 ]; then
|
|
hex=$(( ($dec-26) + 0x61))
|
|
elif [ $dec -ge 52 ] && [ $dec -lt 62 ]; then
|
|
hex=$(( ($dec-52) + 0x30))
|
|
elif [ $dec -eq 62 ]; then
|
|
hex=43
|
|
else
|
|
hex=47
|
|
fi
|
|
printf "%x" $hex
|
|
}
|
|
|
|
encode_base64()
|
|
{
|
|
original_str=$1
|
|
|
|
hex_str=$( echo -n "$original_str" | hexdump -v | awk '{ for ( i = 2; i <= NF; i++ ) { h1=substr($i, 3, 2); h2=substr($i,0,2); printf("%s%s", h1, h2); }}' | awk ' { $0~gsub(/00$/, "") };{ i=1; while(i <= length($0) ){ block= substr($0, i, 3); printf("%s ", block); i=i+3; }}' | awk ' {$0~gsub(/ $/, "")}; { print $0 }' )
|
|
|
|
length=$(echo $hex_str | awk '{$0~gsub(/ /, "")}; { print length($0) }')
|
|
remainder=$(($length % 3 ))
|
|
if [ $remainder -eq 1 ]; then
|
|
hex_str=$hex_str'00'
|
|
elif [ $remainder -eq 2 ]; then
|
|
hex_str=$hex_str'0'
|
|
fi
|
|
|
|
|
|
|
|
|
|
base_64_str=""
|
|
for hex_block in $hex_str
|
|
do
|
|
char1=$(to_ascii $((0x$hex_block / 64)))
|
|
char2=$(to_ascii $((0x$hex_block % 64)))
|
|
base_64_str=$(printf "$base_64_str\x$char1\x$char2")
|
|
done
|
|
|
|
|
|
if [ $remainder -eq 1 ]; then
|
|
base_64_str=$(echo "$base_64_str" | awk '{ $0~gsub(/A$/, "=");} { print $0 }' )
|
|
elif [ $remainder -eq 2 ]; then
|
|
base_64_str=$(echo "$base_64_str==")
|
|
fi
|
|
|
|
|
|
echo $base_64_str
|
|
}
|
|
|
|
shell_get()
|
|
{
|
|
full_url=$1
|
|
|
|
protocol_str=$(echo $full_url | awk ' BEGIN {FS="://"} { if($0~/:\/\//)print $1 }')
|
|
if [ "$protocol_str" != "http" ] && [ -n "$protocol_str" ] ; then
|
|
echo "protocol = $protocol_str"
|
|
echo "Error, unsupported Protocol"
|
|
echo "Only http connections are supported at this time"
|
|
return 1;
|
|
fi
|
|
|
|
|
|
if [ -n "$protocol_str" ] ; then
|
|
full_url=$(echo $full_url | awk ' {$0~gsub(/http:\/\//, "")}; {print $0}')
|
|
fi
|
|
|
|
|
|
|
|
user_pass=$(echo $full_url | awk ' BEGIN {FS="@"}; { if( $0~/@/ && $1~/^[^\?\/]+:[^\?\/]+$/ ) print $1 }')
|
|
host_and_args=""
|
|
if [ -n "$user_pass" ]; then
|
|
host_and_args=$(echo $full_url | awk ' $0~gsub(/^[^@]+@/, "") {print $0}')
|
|
else
|
|
host_and_args="$full_url"
|
|
fi
|
|
|
|
host_name=$(echo $host_and_args | awk ' BEGIN {FS="[:?/]"}; {print $1};')
|
|
port_num=$(echo $host_and_args | awk ' BEGIN {FS="[?/]"}; { if($1~/:/){$1~gsub(/.*:/, ""); print $1;}else {print "80"}};')
|
|
|
|
path=$(echo $host_and_args | awk ' { $0~gsub(/^[^\?\/]+/, "")}; {print $0};')
|
|
path_start_test=$(echo "$path" | grep "^/")
|
|
if [ -z "$path_start_test" ]; then
|
|
path="/$path"
|
|
fi
|
|
|
|
|
|
#echo "full_url=\"$full_url\""
|
|
#echo "user_pass=\"$user_pass\""
|
|
#echo "host_name=\"$host_name\""
|
|
#echo "port_num=\"$port_num\""
|
|
#echo "path=\"$path\""
|
|
|
|
|
|
retrieved_data=""
|
|
if [ -n "$user_pass" ]; then
|
|
auth_str=$(encode_base64 "$user_pass" )
|
|
#echo -e "GET $path HTTP/1.0\nHost: $host_name\nAuthorization: Basic $auth_str\nUser-Agent: shell_get 1.0\n\n"
|
|
retrieved_data=$(echo -e "GET $path HTTP/1.0\nHost: $host_name\nAuthorization: Basic $auth_str\nUser-Agent: shell_get 1.0\n\n" | nc "$host_name" $port_num | cat)
|
|
|
|
else
|
|
#echo -e "GET $path HTTP/1.0\nHost: $host_name\nUser-Agent: shell_get 1.0\n\n"
|
|
retrieved_data=$(echo -e "GET $path HTTP/1.0\nHost: $host_name\nUser-Agent: shell_get 1.0\n\n" | nc "$host_name" $port_num | cat)
|
|
fi
|
|
|
|
echo -e "$retrieved_data"
|
|
|
|
}
|
|
|