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https://github.com/ravijo/simple-telnet-client
Simplest Telnet Client Ever Made in C/C++
https://github.com/ravijo/simple-telnet-client
c cpp networking telnet telnet-client telnetlib wrapper
Last synced: 26 days ago
JSON representation
Simplest Telnet Client Ever Made in C/C++
- Host: GitHub
- URL: https://github.com/ravijo/simple-telnet-client
- Owner: ravijo
- License: mit
- Created: 2022-08-08T03:13:30.000Z (over 2 years ago)
- Default Branch: main
- Last Pushed: 2022-08-16T06:38:40.000Z (over 2 years ago)
- Last Synced: 2023-03-22T16:29:28.959Z (almost 2 years ago)
- Topics: c, cpp, networking, telnet, telnet-client, telnetlib, wrapper
- Language: C++
- Homepage:
- Size: 25.4 KB
- Stars: 1
- Watchers: 1
- Forks: 0
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
- License: LICENSE
Awesome Lists containing this project
README
# simple-telnet-client
Simplest Telnet Client Ever Made in C/C++
## Dependencies
1. [libtelnet](https://github.com/seanmiddleditch/libtelnet): Install it easily using the folllwing command:
```console
$ sudo apt install libtelnet-dev
```
## Installation
1. Make sure to download the repository. Use `git clone https://github.com/ravijo/simple-telnet-client.git` or download zip as per your convenience.
2. Create build directory and go inside it using `mkdir build && cd build`
3. Invoke `cmake` as `cmake ..`
3. Build files using `make`
## Debug
In order to see the request and response from the server, please set `DEBUG_MODE` as shown below:
https://github.com/ravijo/simple-telnet-client/blob/84a05652415afc40d7171fbea5a5a33f98f60a80/include/simple_telnet_client/telnet_client.hpp#L17-L18
## Run
1. Please set the IP address and port number of the telnet server as shown below:
https://github.com/ravijo/simple-telnet-client/blob/84a05652415afc40d7171fbea5a5a33f98f60a80/src/main.cpp#L14
2. Do not forget to compile after changes
3. Invoke the client using `./client` as shown below:
```console
$ ./client
response: [Welcome
]
response: [
]
request: [INIT
]
response: [OK
]
request: [READ PT3
]
response: [OK
]
request: [READ PT4
]
response: [OK
]
request: [REM PT3
]
response: [OK
]
```
## Using `libtelnet` Installed on Custom Location
1. If the `libtelnet` is installed on a custom locaton, we need to provide its path in `CMakeLists.txt`.
2. First, let's find out where is our `libtelnet`
```console
$ whereis libtelnet
libtelnet: /usr/lib/x86_64-linux-gnu/libtelnet.so /usr/lib/x86_64-linux-gnu/libtelnet.a /usr/include/libtelnet.h
```
3. Now, using the above information, we need to modify `CMakeLists.txt` as shown below:
```CMakeLists.txt
set(TELNET_INCLUDE_DIR
/usr/include
)
set(TELNET_LIBRARY
/usr/lib/x86_64-linux-gnu/libtelnet.so
)
include_directories(include
${TELNET_INCLUDE_DIR}
)
add_executable(client
src/telnet_client.cpp
src/main.cpp
)
target_link_libraries(client
${TELNET_LIBRARY}
)
```
## Using Docker
The package can be installed using Docker for testing purposes. Please use the following commands to build and run the docker:
1. Build Docker
```console
ravi@dell:~/simple-telnet-client$ docker build -t client .
Sending build context to Docker daemon 92.67kB
Step 1/8 : FROM ubuntu:20.04
---> 3bc6e9f30f51
Step 2/8 : ENV TZ=Asia/Tokyo
---> f8e22625db16
.
.
.
Step 8/8 : WORKDIR /simple-telnet-client/build
---> efb6c90e291e
Successfully built efb6c90e291e
Successfully tagged client:latest
```
2. Run Docker
```console
ravi@dell:~/simple-telnet-client$ docker run -it client
root@0ebe27c82992:/simple-telnet-client/build#
```
3. CMake Porject
```console
root@0ebe27c82992:/simple-telnet-client/build# cmake ..
-- The C compiler identification is GNU 9.4.0
.
.
.
-- Configuring done
-- Generating done
-- Build files have been written to: /simple-telnet-client/build
```
4. Make Project
```console
root@0ebe27c82992:/simple-telnet-client/build# make
Scanning dependencies of target client
[ 33%] Building CXX object CMakeFiles/client.dir/src/telnet_client.cpp.o
[ 66%] Building CXX object CMakeFiles/client.dir/src/main.cpp.o
[100%] Linking CXX executable client
[100%] Built target client
```
## References
1. [libtelnet](https://github.com/seanmiddleditch/libtelnet)