Add interactive SMTP client for fog network

This script serves as an interactive SMTP client for the fog network, allowing users to send messages via randomly selected entry nodes. It includes dependency checks, message formatting, and Usenet posting capabilities.

1 files changed, 349 insertions, 0 deletions

diff --git a/fog-client.sh b/fog-client.sh
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+++ b/fog-client.sh
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+#!/bin/bash
+# fog-client.sh - Interactive SMTP client for fog network
+# Selects random entry node and sends message
+
+VERSION="1.0"
+
+# Colors
+RED='\033[0;31m'
+GREEN='\033[0;32m'
+YELLOW='\033[1;33m'
+CYAN='\033[0;36m'
+BLUE='\033[0;34m'
+MAGENTA='\033[0;35m'
+NC='\033[0m'
+
+# fog network nodes (onion addresses)
+NODES=(
+    "ej5dj774rkmfxvo3jexcmyotkq6bwgmr45dmwrbmk366lcvalnrgolad.onion:2525"  # kvara
+    "iycr4wfrdzieogdfeo7uxrj77w2vjlrhlrv3jg2ve62oe5aceqsqu7ad.onion:2525"  # dries
+    "66ehoz4ir6beuovmgt4gbpdfpmy43iuouj36dylqvkwgyp2dwpcbvjqd.onion:2525"  # mct8
+    "y3lozzcvvxgorgfofupvfmn4j2fuu3sz2sw7ha3ifpcsxjkuafllzvyd.onion:2525"  # news
+    "ejdrw3ka2mjhvsuz7uxjnzjircsdpoiu3a33g2xoywlafqetptjpqryd.onion:2525"  # pietro
+)
+
+NODE_NAMES=("kvara" "dries" "mct8" "news" "pietro")
+
+# Tor SOCKS proxy
+TOR_PROXY="127.0.0.1:9050"
+
+# Functions
+print_header() {
+    echo -e "${CYAN}"
+    echo "╔═══════════════════════════════════════════════════════════╗"
+    echo "║              🌫️  fog Network Client v${VERSION}              ║"
+    echo "║         Anonymous SMTP Relay - Sphinx Mixnet             ║"
+    echo "╚═══════════════════════════════════════════════════════════╝"
+    echo -e "${NC}"
+}
+
+check_dependencies() {
+    local missing=0
+    
+    # Check nc (netcat)
+    if ! command -v nc &> /dev/null; then
+        echo -e "${RED}✗ netcat not found${NC}"
+        echo "  Install: sudo apt install netcat-openbsd"
+        missing=1
+    fi
+    
+    # Check torify
+    if ! command -v torify &> /dev/null; then
+        echo -e "${RED}✗ torify not found${NC}"
+        echo "  Install: sudo apt install tor"
+        missing=1
+    fi
+    
+    # Check if Tor is running
+    if ! pgrep -x tor > /dev/null; then
+        echo -e "${RED}✗ Tor is not running${NC}"
+        echo "  Start: sudo systemctl start tor"
+        missing=1
+    fi
+    
+    if [ $missing -eq 1 ]; then
+        echo ""
+        echo -e "${RED}Please install missing dependencies and try again.${NC}"
+        exit 1
+    fi
+    
+    echo -e "${GREEN}✓ All dependencies installed${NC}"
+    echo ""
+}
+
+select_random_node() {
+    local random_index=$((RANDOM % ${#NODES[@]}))
+    SELECTED_NODE="${NODES[$random_index]}"
+    SELECTED_NAME="${NODE_NAMES[$random_index]}"
+    
+    echo -e "${CYAN}Entry Node:${NC} ${MAGENTA}${SELECTED_NAME}${NC}"
+    echo -e "${CYAN}Address:${NC} ${SELECTED_NODE}"
+    echo ""
+}
+
+read_multiline() {
+    local prompt="$1"
+    local varname="$2"
+    
+    echo -e "${YELLOW}${prompt}${NC}"
+    echo -e "${CYAN}(Press Ctrl+D when done, or enter a dot '.' on a line by itself)${NC}"
+    
+    local input=""
+    local line
+    
+    while IFS= read -r line; do
+        if [ "$line" = "." ]; then
+            break
+        fi
+        input="${input}${line}"$'\n'
+    done
+    
+    eval "$varname=\$input"
+}
+
+generate_message_id() {
+    echo "<$(cat /dev/urandom | tr -dc 'a-f0-9' | fold -w 32 | head -n 1)@fog-client>"
+}
+
+send_message() {
+    local from="$1"
+    local to="$2"
+    local subject="$3"
+    local body="$4"
+    
+    echo -e "${CYAN}Connecting to ${SELECTED_NAME} via Tor...${NC}"
+    
+    local msgid=$(generate_message_id)
+    local date=$(date -R)
+    
+    # Build SMTP conversation
+    {
+        sleep 1
+        echo "EHLO fog-client"
+        sleep 0.5
+        echo "MAIL FROM:<${from}>"
+        sleep 0.5
+        echo "RCPT TO:<${to}>"
+        sleep 0.5
+        echo "DATA"
+        sleep 0.5
+        echo "From: ${from}"
+        echo "To: ${to}"
+        echo "Subject: ${subject}"
+        echo "Message-ID: ${msgid}"
+        echo "Date: ${date}"
+        echo "Content-Type: text/plain; charset=utf-8"
+        echo ""
+        echo -e "${body}"
+        echo "."
+        sleep 0.5
+        echo "QUIT"
+    } | torify nc ${SELECTED_NODE/:/ } 2>&1 | while IFS= read -r line; do
+        if [[ $line =~ ^[0-9]{3} ]]; then
+            echo -e "${BLUE}← ${line}${NC}"
+        else
+            echo -e "${CYAN}  ${line}${NC}"
+        fi
+    done
+    
+    local exit_code=${PIPESTATUS[0]}
+    
+    echo ""
+    
+    if [ $exit_code -eq 0 ]; then
+        echo -e "${GREEN}✓ Message sent successfully!${NC}"
+        echo -e "${CYAN}Message-ID: ${msgid}${NC}"
+    else
+        echo -e "${RED}✗ Failed to send message${NC}"
+        return 1
+    fi
+}
+
+show_summary() {
+    local from="$1"
+    local to="$2"
+    local subject="$3"
+    
+    echo -e "${YELLOW}═══════════════════════════════════════════════════════════${NC}"
+    echo -e "${CYAN}Message Summary:${NC}"
+    echo -e "  ${BLUE}From:${NC}    ${from}"
+    echo -e "  ${BLUE}To:${NC}      ${to}"
+    echo -e "  ${BLUE}Subject:${NC} ${subject}"
+    echo -e "  ${BLUE}Via:${NC}     ${SELECTED_NAME} (random entry node)"
+    echo -e "${YELLOW}═══════════════════════════════════════════════════════════${NC}"
+    echo ""
+}
+
+interactive_mode() {
+    echo -e "${CYAN}Enter message details:${NC}"
+    echo ""
+    
+    # From
+    read -p "$(echo -e ${YELLOW}From email address: ${NC})" from
+    if [ -z "$from" ]; then
+        echo -e "${RED}Error: From address required${NC}"
+        exit 1
+    fi
+    
+    # To
+    read -p "$(echo -e ${YELLOW}To email address: ${NC})" to
+    if [ -z "$to" ]; then
+        echo -e "${RED}Error: To address required${NC}"
+        exit 1
+    fi
+    
+    # Subject
+    read -p "$(echo -e ${YELLOW}Subject: ${NC})" subject
+    if [ -z "$subject" ]; then
+        subject="(no subject)"
+    fi
+    
+    echo ""
+    
+    # Body (multiline)
+    local body
+    read_multiline "Message body:" body
+    
+    if [ -z "$body" ]; then
+        echo -e "${RED}Error: Message body required${NC}"
+        exit 1
+    fi
+    
+    echo ""
+    show_summary "$from" "$to" "$subject"
+    
+    # Confirm
+    read -p "$(echo -e ${YELLOW}Send message? [y/N]: ${NC})" confirm
+    
+    if [[ ! "$confirm" =~ ^[Yy]$ ]]; then
+        echo -e "${CYAN}Cancelled${NC}"
+        exit 0
+    fi
+    
+    echo ""
+    send_message "$from" "$to" "$subject" "$body"
+}
+
+usenet_helper() {
+    echo -e "${CYAN}Usenet Posting Helper${NC}"
+    echo ""
+    
+    # From
+    read -p "$(echo -e ${YELLOW}From (display name): ${NC})" from_name
+    if [ -z "$from_name" ]; then
+        from_name="Anonymous"
+    fi
+    from="${from_name} <noreply@example.com>"
+    
+    # Newsgroups
+    read -p "$(echo -e ${YELLOW}Newsgroups (e.g., alt.test): ${NC})" newsgroups
+    if [ -z "$newsgroups" ]; then
+        echo -e "${RED}Error: Newsgroups required${NC}"
+        exit 1
+    fi
+    
+    # Subject
+    read -p "$(echo -e ${YELLOW}Subject: ${NC})" subject
+    if [ -z "$subject" ]; then
+        subject="(no subject)"
+    fi
+    
+    echo ""
+    
+    # Body
+    local body
+    read_multiline "Post body:" body
+    
+    if [ -z "$body" ]; then
+        echo -e "${RED}Error: Post body required${NC}"
+        exit 1
+    fi
+    
+    # Add Newsgroups header to body
+    local full_body="Newsgroups: ${newsgroups}"$'\n'"${body}"
+    
+    # Use mail2news gateway
+    local to="mail2news@mail2news.tcpreset.net"
+    
+    echo ""
+    echo -e "${YELLOW}═══════════════════════════════════════════════════════════${NC}"
+    echo -e "${CYAN}Usenet Post Summary:${NC}"
+    echo -e "  ${BLUE}From:${NC}       ${from}"
+    echo -e "  ${BLUE}Newsgroups:${NC} ${newsgroups}"
+    echo -e "  ${BLUE}Subject:${NC}    ${subject}"
+    echo -e "  ${BLUE}Gateway:${NC}    ${to}"
+    echo -e "  ${BLUE}Via:${NC}        ${SELECTED_NAME} (random entry node)"
+    echo -e "${YELLOW}═══════════════════════════════════════════════════════════${NC}"
+    echo ""
+    
+    # Confirm
+    read -p "$(echo -e ${YELLOW}Post to Usenet? [y/N]: ${NC})" confirm
+    
+    if [[ ! "$confirm" =~ ^[Yy]$ ]]; then
+        echo -e "${CYAN}Cancelled${NC}"
+        exit 0
+    fi
+    
+    echo ""
+    send_message "$from" "$to" "$subject" "$full_body"
+}
+
+show_help() {
+    echo "Usage: $0 [OPTIONS]"
+    echo ""
+    echo "Options:"
+    echo "  -h, --help       Show this help message"
+    echo "  -u, --usenet     Usenet posting mode"
+    echo "  -v, --version    Show version"
+    echo ""
+    echo "Interactive mode (default):"
+    echo "  Prompts for From, To, Subject, and Body"
+    echo "  Selects random entry node from fog network"
+    echo "  Sends message via Tor"
+    echo ""
+    echo "Examples:"
+    echo "  $0                    # Interactive email mode"
+    echo "  $0 --usenet           # Interactive Usenet posting mode"
+    echo ""
+}
+
+# Main
+main() {
+    local mode="email"
+    
+    # Parse arguments
+    while [[ $# -gt 0 ]]; do
+        case $1 in
+            -h|--help)
+                show_help
+                exit 0
+                ;;
+            -u|--usenet)
+                mode="usenet"
+                shift
+                ;;
+            -v|--version)
+                echo "fog-client v${VERSION}"
+                exit 0
+                ;;
+            *)
+                echo "Unknown option: $1"
+                show_help
+                exit 1
+                ;;
+        esac
+    done
+    
+    print_header
+    check_dependencies
+    select_random_node
+    
+    if [ "$mode" = "usenet" ]; then
+        usenet_helper
+    else
+        interactive_mode
+    fi
+}
+
+# Run
+main "$@"