replaced dnsmasq-container -> deb2

confs/.tmux.conf

@@ -0,0 +1,2 @@
+set-option -g prefix C-a
+set -s set-clipboard on

confs/.vimrc

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+call plug#begin()
+
+Plug 'tpope/vim-fugitive'
+Plug 'tpope/vim-commentary'
+Plug 'preservim/nerdtree', { 'on': 'NERDTreeToggle' }
+
+" Plug 'neoclide/coc.nvim', {'branch': 'release'}
+
+Plug 'jpalardy/vim-slime'
+
+Plug 'ojroques/vim-oscyank', {'branch': 'main'}
+
+call plug#end()
+
+nnoremap <leader>n :NERDTreeFocus<CR>
+nnoremap <C-n> :NERDTree<CR>
+nnoremap <C-t> :NERDTreeToggle<CR>
+nnoremap <C-f> :NERDTreeFind<CR>
+
+
+set backspace=indent,eol,start
+set mouse=r
+
+packadd termdebug
+let g:termdebug_wide=1
+let g:termdebugger='riscv32-unknown-elf-gdb'
+
+
+" Disable compatibility with vi which can cause unexpected issues.
+set nocompatible
+
+" Enable type file detection. Vim will be able to try to detect the type of file in use.
+filetype on
+
+" Enable plugins and load plugin for the detected file type.
+filetype plugin on
+
+" Load an indent file for the detected file type.
+filetype indent on
+
+" Turn syntax highlighting on.
+syntax on
+
+" Add numbers to each line on the left-hand side.
+set number
+
+" Highlight cursor line underneath the cursor horizontally.
+set cursorline
+
+" Highlight cursor line underneath the cursor vertically.
+"set cursorcolumn
+
+
+" Set shift width to 4 spaces.
+set shiftwidth=4
+
+" Set tab width to 4 columns.
+set tabstop=4
+
+" Use space characters instead of tabs.
+set expandtab
+
+" Do not save backup files.
+set nobackup
+
+" Do not let cursor scroll below or above N number of lines when scrolling.
+set scrolloff=10
+
+" Do not wrap lines. Allow long lines to extend as far as the line goes.
+set nowrap
+
+" While searching though a file incrementally highlight matching characters as you type.
+set incsearch
+
+" Ignore capital letters during search.
+set ignorecase
+
+" Override the ignorecase option if searching for capital letters.
+" This will allow you to search specifically for capital letters.
+set smartcase
+
+" Show partial command you type in the last line of the screen.
+set showcmd
+
+" Show the mode you are on the last line.
+set showmode
+
+" Show matching words during a search.
+set showmatch
+
+" Use highlighting when doing a search.
+set hlsearch
+
+" Set the commands to save in history default number is 20.
+set history=1000
+
+" Enable auto completion menu after pressing TAB.
+set wildmenu
+
+" Make wildmenu behave like similar to Bash completion.
+set wildmode=list:longest
+
+" There are certain files that we would never want to edit with Vim.
+" Wildmenu will ignore files with these extensions.
+set wildignore=*.docx,*.jpg,*.png,*.gif,*.pdf,*.pyc,*.exe,*.flv,*.img,*.xlsx
+
+
+" set colorscheme OceanicNext
+
+
+if !exists("g:slime_python_ipython")
+  let g:slime_python_ipython = 1
+endif
+
+let g:slime_target = "tmux"
+
+" Run cell for vim-slime
+function! SendCell(pattern)
+    let start_line = search(a:pattern, 'bnW')
+
+    if start_line
+        let start_line = start_line + 1
+    else
+        let start_line = 1
+    endif
+
+    let stop_line = search(a:pattern, 'nW')
+    if stop_line
+        let stop_line = stop_line - 1
+    else
+        let stop_line = line('$')
+    endif
+
+    call slime#send_range(start_line, stop_line)
+endfunction
+
+" Custom vim-slime mappings
+let g:slime_no_mappings = 1
+xmap <c-c><c-c> <Plug>SlimeRegionSend
+nmap <c-c><c-c> :<c-u>call SendCell('^#%%')<cr>
+nmap <c-c>v     <Plug>SlimeConfig
+
+
+nmap <leader>c <Plug>OSCYankOperator
+nmap <leader>cc <leader>c_
+vmap <leader>c <Plug>OSCYankVisual
+
+if (!has('nvim') && !has('clipboard_working'))
+    " In the event that the clipboard isn't working, it's quite likely that
+    " the + and * registers will not be distinct from the unnamed register. In
+    " this case, a:event.regname will always be '' (empty string). However, it
+    " can be the case that `has('clipboard_working')` is false, yet `+` is
+    " still distinct, so we want to check them all.
+    let s:VimOSCYankPostRegisters = ['', '+', '*']
+    function! s:VimOSCYankPostCallback(event)
+        if a:event.operator == 'y' && index(s:VimOSCYankPostRegisters, a:event.regname) != -1
+            call OSCYankRegister(a:event.regname)
+        endif
+    endfunction
+    augroup VimOSCYankPost
+        autocmd!
+        autocmd TextYankPost * call s:VimOSCYankPostCallback(v:event)
+    augroup END
+endif
+
+set tags=./tags;,tags;
+" Map Ctrl-[ to go back in the tag stack
+
+" Function to display filename aligned to the right
+function! ShowFileNameRight()
+  let l:filename = expand('%:p')
+  let l:columns = &columns
+  let l:space = l:columns - len(l:filename) - 2
+  let l:spaces = repeat(' ', l:space > 0 ? l:space : 0)
+  echo l:spaces . l:filename
+endfunction
+
+" Autocommand to display filename in command area when entering command mode
+" autocmd CmdlineEnter * call ShowFileNameRight()
+
+

doc/main.aux

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+\relax 
+\@writefile{toc}{\contentsline {section}{\numberline {1}Introduction}{1}{}\protected@file@percent }
+\@writefile{toc}{\contentsline {section}{\numberline {2}Prerequisites}{1}{}\protected@file@percent }
+\@writefile{toc}{\contentsline {section}{\numberline {3}Step-by-Step Configuration}{1}{}\protected@file@percent }
+\@writefile{toc}{\contentsline {subsection}{\numberline {3.1}Creating and Setting Up the Incus Container}{1}{}\protected@file@percent }
+\@writefile{toc}{\contentsline {subsection}{\numberline {3.2}Installing Additional Packages}{1}{}\protected@file@percent }
+\@writefile{toc}{\contentsline {subsection}{\numberline {3.3}Configuring Users and Permissions}{2}{}\protected@file@percent }
+\@writefile{toc}{\contentsline {subsubsection}{\numberline {3.3.1}Changing the Root Password}{2}{}\protected@file@percent }
+\@writefile{toc}{\contentsline {subsubsection}{\numberline {3.3.2}Adding a New User}{2}{}\protected@file@percent }
+\@writefile{toc}{\contentsline {subsection}{\numberline {3.4}Accessing the Container}{2}{}\protected@file@percent }
+\@writefile{toc}{\contentsline {subsection}{\numberline {3.5}Installing dnsmasq}{2}{}\protected@file@percent }
+\@writefile{toc}{\contentsline {subsection}{\numberline {3.6}Configuring the Network with Netplan}{2}{}\protected@file@percent }
+\@writefile{toc}{\contentsline {subsection}{\numberline {3.7}Configuring dnsmasq}{3}{}\protected@file@percent }
+\@writefile{toc}{\contentsline {subsection}{\numberline {3.8}Starting and Enabling dnsmasq}{4}{}\protected@file@percent }
+\@writefile{toc}{\contentsline {subsection}{\numberline {3.9}Testing the Configuration}{4}{}\protected@file@percent }
+\@writefile{toc}{\contentsline {section}{\numberline {4}Troubleshooting}{4}{}\protected@file@percent }
+\@writefile{toc}{\contentsline {section}{\numberline {5}Conclusion}{4}{}\protected@file@percent }
+\gdef \@abspage@last{4}

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doc/main.tex

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   stringstyle=\color{red}
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+% Define YAML language for listings
+\lstdefinelanguage{yaml}{
+  keywords={true,false,null,yaml,network,version,ethernets,dhcp4,addresses,routes,to,via,nameservers},
+  keywordstyle=\color{blue}\bfseries,
+  basicstyle=\ttfamily\small,
+  sensitive=false,
+  comment=[l]{\#},
+  commentstyle=\color{gray}\itshape,
+  stringstyle=\color{red},
+  morestring=[b]{"},
+  morestring=[b]{'}
+}
+
 \begin{document}
 
 \title{Basic Configuration of dnsmasq in an Incus Container on Debian with Netplan}
@@ -41,34 +54,77 @@ Before proceeding, ensure the following:
 \section{Step-by-Step Configuration}
 
 \subsection{Creating and Setting Up the Incus Container}
-% Creating the Incus container
+Create a Debian container named \texttt{deb2} using the following commands on the host:
-Create a Debian container named \texttt{dnsmasq-container} using the following command on the host:
 \begin{lstlisting}[language=bash]
-incus create images:debian/12 dnsmasq-container
+incus create images:debian/12 deb2
-incus config set dnsmasq-container security.syscalls.intercept.mount true
+incus config set deb2 security.syscalls.intercept.mount true
-incus start dnsmasq-container
+incus config set deb2 security.nesting true
+incus config set deb2 security.privileged true
+incus start deb2
 \end{lstlisting}
-The \texttt{security.syscalls.intercept.mount} setting is required for \texttt{dnsmasq} to function correctly in the container.
+The \texttt{security.syscalls.intercept.mount}, \texttt{security.nesting}, and \texttt{security.privileged} settings are required for \texttt{dnsmasq} and Docker to function correctly in the container.
 
-% Accessing the container
+\subsection{Installing Additional Packages}
-Access the container:
+Install the necessary packages inside the container:
 \begin{lstlisting}[language=bash]
-incus exec dnsmasq-container -- bash
+incus exec deb2 -- apt update
+incus exec deb2 -- apt install -y \
+    netplan.io \
+    sudo vim nano git tmux mc zip unzip curl wget htop lynx \
+    iproute2 termshark bridge-utils \
+    python3 python3-ipython python3-pyroute2 python3-scapy \
+    docker.io docker-compose
+\end{lstlisting}
+
+\subsection{Configuring Users and Permissions}
+Configure user access and permissions within the container.
+
+\subsubsection{Changing the Root Password}
+Set the root password to "passroot":
+\begin{lstlisting}[language=bash]
+incus exec deb2 -- bash -c 'echo "root:passroot" | chpasswd'
+\end{lstlisting}
+
+\subsubsection{Adding a New User}
+Add a new user named "user" with the password "pass" and add them to the "sudo" and "docker" groups:
+\begin{lstlisting}[language=bash]
+incus exec deb2 -- useradd -m -s /bin/bash user
+incus exec deb2 -- bash -c 'echo "user:pass" | chpasswd'
+incus exec deb2 -- usermod -aG sudo user
+incus exec deb2 -- usermod -aG docker user
+\end{lstlisting}
+
+After creating the user, you can also transfer configuration files such as \texttt{.tmux.conf} and \texttt{.vimrc} from your local machine to the home directory of the newly created user inside the container:
+
+\begin{lstlisting}[language=bash]
+incus file push .tmux.conf deb2/home/user/
+incus file push .vimrc deb2/home/user/
+\end{lstlisting}
+
+To enhance the functionality of Vim, it's recommended to install a plugin manager such as \texttt{vim-plug}. This can be done by downloading the plugin manager directly into the user's Vim configuration directory using the following command:
+
+\begin{lstlisting}[language=bash]
+curl -fLo ~/.vim/autoload/plug.vim --create-dirs \\
+    https://raw.githubusercontent.com/junegunn/vim-plug/master/plug.vim
+\end{lstlisting}
+
+\subsection{Accessing the Container}
+Access the container's shell:
+\begin{lstlisting}[language=bash]
+incus exec deb2 -- bash
 \end{lstlisting}
 
 \subsection{Installing dnsmasq}
-% Installing dnsmasq and dependencies
 Update the package list and install \texttt{dnsmasq}:
 \begin{lstlisting}[language=bash]
-apt update
+incus exec deb2 -- apt update
-apt install dnsmasq -y
+incus exec deb2 -- apt install dnsmasq -y
 \end{lstlisting}
 
 \subsection{Configuring the Network with Netplan}
-% Setting up the network interface
+Configure the container's network using Netplan to assign a static IP address. Create or edit the Netplan configuration file at \texttt{/etc/netplan/01-netcfg.yaml}:
-Configure the container's network using Netplan to assign a static IP address. Edit the Netplan configuration file (e.g., \texttt{/etc/netplan/01-netcfg.yaml}):
 \begin{lstlisting}[language=bash]
-nano /etc/netplan/01-netcfg.yaml
+incus exec deb2 -- nano /etc/netplan/01-netcfg.yaml
 \end{lstlisting}
 Add the following configuration:
 \begin{lstlisting}[language=yaml]
@@ -79,20 +135,21 @@ network:
       dhcp4: no
       addresses:
         - 192.168.1.10/24
-      gateway4: 192.168.1.1
+      routes:
+        - to: default
+          via: 192.168.1.1
       nameservers:
         addresses: [8.8.8.8, 8.8.4.4]
 \end{lstlisting}
 Apply the configuration:
 \begin{lstlisting}[language=bash]
-netplan apply
+incus exec deb2 -- netplan apply
 \end{lstlisting}
 
 \subsection{Configuring dnsmasq}
-% Configuring dnsmasq for DNS and DHCP
 Edit the \texttt{dnsmasq} configuration file at \texttt{/etc/dnsmasq.conf}:
 \begin{lstlisting}[language=bash]
-nano /etc/dnsmasq.conf
+incus exec deb2 -- nano /etc/dnsmasq.conf
 \end{lstlisting}
 Add or modify the following settings to enable DNS and DHCP:
 \begin{lstlisting}
@@ -123,31 +180,29 @@ dhcp-option=6,8.8.8.8,8.8.4.4
 \end{itemize}
 
 \subsection{Starting and Enabling dnsmasq}
-% Starting the dnsmasq service
+Restart and enable the \texttt{dnsmasq} service:
-Restart the \texttt{dnsmasq} service to apply the configuration:
 \begin{lstlisting}[language=bash]
-systemctl restart dnsmasq
+incus exec deb2 -- systemctl restart dnsmasq
-systemctl enable dnsmasq
+incus exec deb2 -- systemctl enable dnsmasq
 \end{lstlisting}
 Verify that \texttt{dnsmasq} is running:
 \begin{lstlisting}[language=bash]
-systemctl status dnsmasq
+incus exec deb2 -- systemctl status dnsmasq
 \end{lstlisting}
 
 \subsection{Testing the Configuration}
-% Testing DNS and DHCP
+Test DNS resolution from within the container:
-Test the DNS resolution from within the container:
 \begin{lstlisting}[language=bash]
-nslookup example.local 192.168.1.10
+incus exec deb2 -- nslookup example.local 192.168.1.10
 \end{lstlisting}
 To test DHCP, connect a client device to the same network and verify that it receives an IP address in the range \texttt{192.168.1.100--192.168.1.200}.
 
 \section{Troubleshooting}
 If \texttt{dnsmasq} fails to start:
 \begin{itemize}
-  \item Check the logs: \texttt{journalctl -u dnsmasq}.
+  \item Check the logs: \texttt{incus exec deb2 -- journalctl -u dnsmasq}.
   \item Ensure no other service is using port 53 (DNS) or 67 (DHCP).
-  \item Verify the network configuration with \texttt{ip a} and \texttt{ping 8.8.8.8}.
+  \item Verify the network configuration with \texttt{incus exec deb2 -- ip a} and \texttt{incus exec deb2 -- ping 8.8.8.8}.
 \end{itemize}
 
 \section{Conclusion}

py/files.py

@@ -0,0 +1,91 @@
+import re
+from pathlib import Path
+
+def get_file_extension_and_default_name(attributes: str, code: str) -> tuple[str, str]:
+    """Determine file extension and default name based on attributes and content."""
+    # Extract language from attributes (e.g., language=bash)
+    language_match = re.search(r'language=(\w+)', attributes)
+    language = language_match.group(1).lower() if language_match else 'unknown'
+
+    if language == 'bash' or 'incus' in code.lower():
+        return '.sh', 'incus_script'
+    elif language == 'yaml':
+        return '.yaml', 'netplan_config'
+    elif language == 'python':
+        return '.py', 'python_script'
+    else:
+        # Assume .conf for blocks without language or resembling config
+        return '.conf', 'dnsmasq_config'
+
+def generate_unique_filename(base_dir: Path, base_name: str, extension: str) -> Path:
+    """Generate a unique filename by appending a number if the file exists."""
+    counter = 1
+    while True:
+        filename = f"{base_name}_{counter}{extension}"
+        file_path = base_dir / filename
+        if not file_path.exists():
+            return file_path
+        counter += 1
+
+def extract_listings():
+    """Extract lstlisting code blocks from main.tex and save to scripts folder."""
+    # Define paths
+    base_dir = Path(__file__).parent.parent  # ~/edu/paso/dnsmasq
+    tex_file = base_dir / 'doc' / 'main.tex'
+    scripts_dir = base_dir / 'scripts'
+
+    # Ensure scripts directory exists
+    scripts_dir.mkdir(exist_ok=True)
+
+    # Read the LaTeX file
+    try:
+        with open(tex_file, 'r', encoding='utf-8') as f:
+            content = f.read()
+    except FileNotFoundError:
+        print(f"Error: {tex_file} not found")
+        return
+    except Exception as e:
+        print(f"Error reading {tex_file}: {str(e)}")
+        return
+
+    # Regex to match lstlisting environments
+    # Captures optional attributes [language=...,label=...] and code block content
+    pattern = r'\\begin\{lstlisting\}(\[(.*?)\])?(.*?)\\end\{lstlisting\}'
+    matches = re.finditer(pattern, content, re.DOTALL)
+
+    extracted_count = 0
+
+    for match in matches:
+        # Extract attributes (if any) and code
+        attributes = match.group(2) or ''  # Empty string if no attributes
+        code = match.group(3).strip()
+
+        # Extract label from attributes (e.g., label={setup_container})
+        label_match = re.search(r'label=\{([^}]+)\}', attributes)
+        label = label_match.group(1) if label_match else None
+
+        # Get file extension and default name
+        extension, default_name = get_file_extension_and_default_name(attributes, code)
+
+        # Use label if available, otherwise use default name
+        base_name = label if label else default_name
+
+        # Generate unique filename
+        file_path = generate_unique_filename(scripts_dir, base_name, extension)
+
+        # Save the code block to a file
+        try:
+            with open(file_path, 'w', encoding='utf-8') as f:
+                f.write(code)
+            print(f"Saved code block to {file_path}")
+            extracted_count += 1
+        except Exception as e:
+            print(f"Error saving {file_path}: {str(e)}")
+
+    if extracted_count == 0:
+        print("No lstlisting code blocks found in main.tex")
+    else:
+        print(f"Completed: Extracted {extracted_count} code block(s) to {scripts_dir}")
+
+if __name__ == "__main__":
+    extract_listings()

scripts/dnsmasq_config_1.conf

@@ -0,0 +1,13 @@
+# DNS settings
+domain-needed
+bogus-priv
+no-resolv
+server=8.8.8.8
+server=8.8.4.4
+local=/example.local/
+domain=example.local
+
+# DHCP settings
+dhcp-range=192.168.1.100,192.168.1.200,12h
+dhcp-option=3,192.168.1.1
+dhcp-option=6,8.8.8.8,8.8.4.4

scripts/incus_script_1.sh

@@ -0,0 +1,5 @@
+incus create images:debian/12 dnsmasq-container
+incus config set dnsmasq-container security.syscalls.intercept.mount true
+incus config set dnsmasq-container security.nesting true
+incus config set dnsmasq-container security.privileged true
+incus start dnsmasq-container

scripts/incus_script_10.sh

@@ -0,0 +1,2 @@
+incus exec dnsmasq-container -- systemctl restart dnsmasq
+incus exec dnsmasq-container -- systemctl enable dnsmasq

scripts/incus_script_11.sh

@@ -0,0 +1 @@
+incus exec dnsmasq-container -- systemctl status dnsmasq

scripts/incus_script_12.sh

@@ -0,0 +1 @@
+incus exec dnsmasq-container -- nslookup example.local 192.168.1.10

scripts/incus_script_2.sh

@@ -0,0 +1,7 @@
+incus exec dnsmasq-container -- apt update
+incus exec dnsmasq-container -- apt install -y \
+    netplan.io \
+    sudo vim nano git tmux mc zip unzip curl wget htop lynx \
+    iproute2 termshark bridge-utils \
+    python3 python3-ipython python3-pyroute2 python3-scapy \
+    docker.io docker-compose

scripts/incus_script_3.sh

@@ -0,0 +1 @@
+incus exec dnsmasq-container -- bash -c 'echo "root:passroot" | chpasswd'

scripts/incus_script_4.sh

@@ -0,0 +1,4 @@
+incus exec dnsmasq-container -- useradd -m -s /bin/bash user
+incus exec dnsmasq-container -- bash -c 'echo "user:pass" | chpasswd'
+incus exec dnsmasq-container -- usermod -aG sudo user
+incus exec dnsmasq-container -- usermod -aG docker user

scripts/incus_script_5.sh

@@ -0,0 +1 @@
+incus exec dnsmasq-container -- bash

scripts/incus_script_6.sh

@@ -0,0 +1,2 @@
+incus exec dnsmasq-container -- apt update
+incus exec dnsmasq-container -- apt install dnsmasq -y

scripts/incus_script_7.sh

@@ -0,0 +1 @@
+incus exec dnsmasq-container -- nano /etc/netplan/01-netcfg.yaml

scripts/incus_script_8.sh

@@ -0,0 +1 @@
+incus exec dnsmasq-container -- netplan apply

scripts/incus_script_9.sh

@@ -0,0 +1 @@
+incus exec dnsmasq-container -- nano /etc/dnsmasq.conf

scripts/netplan_config_1.yaml

@@ -0,0 +1,12 @@
+network:
+  version: 2
+  ethernets:
+    eth0:
+      dhcp4: no
+      addresses:
+        - 192.168.1.10/24
+      routes:
+        - to: default
+          via: 192.168.1.1
+      nameservers:
+        addresses: [8.8.8.8, 8.8.4.4]