├── LICENSE
├── README.md
└── authentication.sh


/LICENSE:
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 1 | MIT License
 2 | 
 3 | Copyright (c) 2023 Ankur
 4 | 
 5 | Permission is hereby granted, free of charge, to any person obtaining a copy
 6 | of this software and associated documentation files (the "Software"), to deal
 7 | in the Software without restriction, including without limitation the rights
 8 | to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 9 | copies of the Software, and to permit persons to whom the Software is
10 | furnished to do so, subject to the following conditions:
11 | 
12 | The above copyright notice and this permission notice shall be included in all
13 | copies or substantial portions of the Software.
14 | 
15 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 | IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 | FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
18 | AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 | LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
20 | OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
21 | SOFTWARE.
22 | 


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/README.md:
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 1 | # IITBHU Wifi Logger
 2 | The current system has a firewall authentication system and this makes us enter the credentials again and again. We might have also lost our wifi network on curcial time due to this xD. In order to avoid the boring task and losing the network during important times, I created a shell script which currently suports Unix and Mac. I'm planning to make a cross platform GUI for the same so that it can work on other operating sytems as well.
 3 | 
 4 | ## Prerequisite
 5 | Make sure to install `net-tools`
 6 | ```
 7 | sudo apt-get install net-tools
 8 | ```
 9 | ## How to run the script
10 | > Note: Make sure to open the terminal in the project directory
11 | - First task is to make the script executable
12 | ```
13 | chmod +x ./authentication.sh
14 | ```
15 | - Execute the script with
16 | ```
17 | bash authentication.sh
18 | ```
19 | - Adding the script to crontab (so that the script runs after every reboot)
20 | 
21 | For Linux:
22 |   - `crontab -e`
23 |   - Add this command to the opened file `@reboot <path_of_the_script>` <br></br>
24 |   > ![Screenshot from 2023-01-04 11-43-38](https://user-images.githubusercontent.com/76884959/210495096-d4067e61-a09a-4e0e-b058-e2ecd9c83290.png)
25 | 
26 | For Mac OS:
27 | - Follow this [link](https://stackoverflow.com/questions/6442364/running-script-upon-login-in-mac-os-x#:~:text=478-,Follow%20this%3A,-start%20Automator.app) to add the script on startup.
28 | 
29 | And voila you've added an automated wifi login system in your device.
30 | 
31 | ---
32 | If you found this project helpful, please give a ⭐ from your ♥.
33 | 


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/authentication.sh:
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 1 | #!/usr/bin/bash
 2 | 
 3 | firewall_url="http://192.168.249.1:1000"
 4 | username="<ENTER YOUR USERNAME>"
 5 | password="<ENTER YOUR PASSWORD>"
 6 | 
 7 | pLength=${#password}
 8 | 
 9 | if [[ "$OSTYPE" == "linux-gnu"* ]]; then
10 |     interface="$(route | grep '^default' | grep -o '[^ ]*$')"
11 | elif [[ "$OSTYPE" == "darwin"* ]]; then
12 |     interface="$(route -n get default | grep 'interface:' | grep -o '[^ ]*$')"
13 | else
14 |     echo "Doesn't support your OS!"
15 |     exit 1
16 | fi
17 | 
18 | echo "$OSTYPE": "$interface"
19 | echo "Username: $username"
20 | echo -ne "Password:"
21 | for (( i=0; i<$pLength; i++ )); do
22 |     echo -ne "*"
23 | done
24 | 
25 | get_login_page() {
26 |     local output="$(curl --silent \
27 |         --interface "${interface}" -k "${firewall_url}/logout?")"
28 |     echo "${output}" | grep -oE '"htt[^"]*"' | grep -oE 'http[^"]*' 
29 | }
30 | 
31 | get_magic() {
32 |     local login_page="${1}"; shift
33 |     local output="$(curl --silent \
34 |         --interface "${interface}" -k "${login_page}")"
35 |     local quoted="$(echo "${output}" | grep -oE \
36 |         '"magic" value="[^"]*"' | grep -oE '"[^"]*"$')"
37 |     echo "${quoted}" | grep -oE '[^"]*'
38 | }
39 | 
40 | do_login() {
41 |     local magic="${1}"; shift
42 |     local output="$(curl -k --interface "${interface}" -X POST --silent \
43 |         -d "username=${username}" \
44 |         -d "password=${password}" \
45 |         -d "magic=${magic}" \
46 |         -d "submit=Continue" \
47 |         "${firewall_url}/" )"
48 |     echo "${output}" | grep -oE 'http[^"]*logout[^"]*'
49 |     echo "${output}" | grep -oE 'http[^"]*keepalive[^"]*'
50 | }
51 | 
52 | log_out() {
53 |     local url="${1}"; shift
54 |     curl -k --interface "${interface}" --silent "${url}"
55 | }
56 | 
57 | keep_alive() {
58 |     local url="${1}"; shift
59 |     echo "Keepalive url is" "${url}"
60 |     while :; do
61 |         local output="$(curl -k -silent --interface "${interface}" "${url}")"
62 | 
63 |         if echo "${output}" | grep -q "leave it open"; then
64 |             echo "Keepalive successful"
65 |             sleep 10
66 |         else
67 |             echo "Keepalive unsuccessful; Trying to get login screen"
68 |             break
69 |         fi
70 |     done
71 | }
72 | 
73 | main() {
74 |     local output="${1}"; shift
75 |     logout_url=$(echo "$output" | head -1)
76 |     keepalive_url=$(echo "$output" | tail -1)
77 | 
78 |     echo "${logout_url}"
79 |     echo "${keepalive_url}"
80 | 
81 |     keep_alive "${keepalive_url}"
82 | }
83 | 
84 | while :; do
85 |     lpage="$(get_login_page)"
86 |     magic="$(get_magic "${lpage}")"
87 |     lurls="$(do_login "${magic}")"
88 |     main "${lurls}"
89 |     sleep 1
90 | done
91 | 


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