blob: ca7c2bb26aac0bdade963f086bb3d63f7fbb126c (
plain)
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
|
#!/bin/bash
incomingData=''
startPortRange=9000 #Ports to be released for ssh communications
endPortRange=9010
firstAvailablePort=''
# --------------------------------------------------------------------------
function readRequest() {
# To avoid internal server error (500), minimum text to echo
echo ''
# Read the number of bytes(mentioned in CONTENT_LENGTH header) and
# store the content in incomingData variable
read -n $CONTENT_LENGTH incomingData
# To view the content of the incoming data, try a test URL with POST using curl
# curl --data "requestSshCredentials" http://localhost/server
# This will send the data to server(to this cgi script) and based on availablity
# of the ports it will allocate ssh credentials
}
# --------------------------------------------------------------------------
function checkRequest() {
if [ "$incomingData" == "requestSshCredentials" ];
then
firstAvailablePort=$(nmap -p $startPortRange-$endPortRange localhost \
| grep -m 1 closed \
| cut -d '/' -f 1)
# Exit if no ports available
if [ $(echo -n $firstAvailablePort | wc -m) == "0" ];
then
echo "Sorry, NO ports available, please try again!"
exit 0
fi
fi
}
# -------------------------------------------------------------------------
function usernamePasswdforSSH() {
randomUser=$(date | md5sum | cut -c-5)
randomPasswd=$(date | md5sum | cut -c6-16) #just in case :)
encryptedPasswd=$(openssl passwd $randomPasswd)
sudo useradd -p $encryptedPasswd -r -s /bin/false $randomUser
echo $firstAvailablePort,$randomPasswd,$randomUser
}
# -------------------------------------------------------------------------
readRequest
checkRequest
usernamePasswdforSSH
|
