fix: enable JustWorksRepairing in install.sh to prevent pairing failures
Adds Step 5C to install.sh that automatically configures BlueZ's JustWorksRepairing setting to "always" in /etc/bluetooth/main.conf. This enables automatic pairing for peer-initiated BLE connections, which is required for zero-touch mesh networking. Changes: - install.sh: Add Step 5C to configure JustWorksRepairing - Checks current setting and only modifies if needed - Handles both root and non-root execution - Restarts bluetooth service to apply changes - Container-friendly with non-fatal restart operations - README.md: Document JustWorksRepairing in manual installation steps - README.md: Add troubleshooting section for JustWorksRepairing warning Fixes #13 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude <noreply@anthropic.com>
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2 changed files with 150 additions and 3 deletions
54
README.md
54
README.md
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@ -209,9 +209,11 @@ ls ~/.local/pipx/venvs/
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sudo setcap 'cap_net_raw,cap_net_admin+eip' ~/.local/pipx/venvs/rns/bin/python3
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```
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#### 5. Enable BlueZ Experimental Mode
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#### 5. Configure BlueZ
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The BLE interface requires BlueZ experimental features for proper BLE connectivity:
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The BLE interface requires BlueZ experimental features and automatic pairing configuration:
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**Enable Experimental Mode:**
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```bash
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# Edit BlueZ service configuration
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@ -225,13 +227,28 @@ ExecStart=
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ExecStart=/usr/lib/bluetooth/bluetoothd --experimental
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```
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Then reload and restart:
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**Enable JustWorksRepairing for Automatic Pairing:**
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Edit `/etc/bluetooth/main.conf` and add to the `[General]` section:
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```ini
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[General]
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JustWorksRepairing = always
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```
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This enables automatic pairing for peer-initiated connections, which is required for zero-touch mesh networking. Reticulum provides its own cryptographic security on top of the BLE transport.
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**Apply Changes:**
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```bash
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sudo systemctl daemon-reload
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sudo systemctl restart bluetooth.service
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# Verify experimental mode is enabled
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systemctl status bluetooth.service | grep -i experimental
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# Verify JustWorksRepairing is set
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grep JustWorksRepairing /etc/bluetooth/main.conf
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```
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#### Why pipx Requires Special Handling
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@ -346,6 +363,37 @@ These errors occur when BlueZ attempts Classic Bluetooth (BR/EDR) connections in
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**Solution:**
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Enable BlueZ experimental mode (see Installation → Manual Installation → step 4). If you used the automated installer, re-run it without `--skip-experimental`.
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### BLE pairing failures / "JustWorksRepairing: never" warning
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The BLE interface logs a warning that BlueZ's JustWorksRepairing is set to "never", which may cause pairing failures in the mesh network.
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**Symptoms:**
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- Warning: `BlueZ JustWorksRepairing: never (default - may cause pairing failures)`
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- Recommendation message: `Set JustWorksRepairing=always in /etc/bluetooth/main.conf`
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- Intermittent connection failures with peer devices
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- Pairing requests rejected by BlueZ
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**Cause:**
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BlueZ's default `JustWorksRepairing` setting is "never", which blocks automatic pairing for peer-initiated connections. This breaks zero-touch mesh networking.
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**Solution:**
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Enable JustWorksRepairing in BlueZ configuration (see Installation → Manual Installation → step 5). If you used the automated installer, this is configured automatically. To verify or fix manually:
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```bash
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# Edit BlueZ configuration
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sudo nano /etc/bluetooth/main.conf
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# Add to [General] section:
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JustWorksRepairing = always
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# Restart Bluetooth service
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sudo systemctl restart bluetooth
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# Verify the setting
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grep JustWorksRepairing /etc/bluetooth/main.conf
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```
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**Note:** Just Works pairing provides unauthenticated BLE encryption. This is acceptable because Reticulum provides its own cryptographic security on top of the BLE transport layer.
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### Bluetooth adapter not powered / "No powered Bluetooth adapters found"
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The Bluetooth adapter exists but is powered off, preventing BLE operations.
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99
install.sh
99
install.sh
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@ -920,6 +920,105 @@ fi
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echo
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# Step 5D: BlueZ JustWorksRepairing Configuration
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print_header "BlueZ JustWorksRepairing Configuration"
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BLUEZ_CONF="/etc/bluetooth/main.conf"
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if [ -f "$BLUEZ_CONF" ]; then
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print_info "Checking JustWorksRepairing setting in $BLUEZ_CONF..."
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# Extract current JustWorksRepairing setting (handle commented lines)
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CURRENT_SETTING=$(grep -E "^#?\s*JustWorksRepairing\s*=" "$BLUEZ_CONF" 2>/dev/null | tail -1 | sed 's/.*=\s*//' | tr -d '[:space:]')
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if [ "$CURRENT_SETTING" = "always" ]; then
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print_success "JustWorksRepairing is already set to 'always'"
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else
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if [ -z "$CURRENT_SETTING" ]; then
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print_info "JustWorksRepairing not found in config (using BlueZ default: never)"
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else
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print_info "JustWorksRepairing is currently set to: $CURRENT_SETTING"
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fi
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print_info "Setting JustWorksRepairing to 'always' for automatic BLE mesh pairing..."
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echo
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print_info "Background: BlueZ's JustWorksRepairing controls automatic pairing"
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print_info "for peer-initiated connections. Setting to 'always' enables zero-touch"
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print_info "mesh networking. Reticulum provides its own cryptographic security."
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echo
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# Modify the configuration file
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if [ "$EUID" -eq 0 ]; then
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# Running as root - no sudo needed
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# First, comment out any existing JustWorksRepairing lines
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sed -i 's/^\s*JustWorksRepairing\s*=.*/#&/' "$BLUEZ_CONF"
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# Add our setting to the [General] section or append if no section exists
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if grep -q "^\[General\]" "$BLUEZ_CONF"; then
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# Insert after [General] section header
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sed -i '/^\[General\]/a JustWorksRepairing = always' "$BLUEZ_CONF"
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else
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# No [General] section, append at end
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echo "" >> "$BLUEZ_CONF"
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echo "[General]" >> "$BLUEZ_CONF"
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echo "JustWorksRepairing = always" >> "$BLUEZ_CONF"
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fi
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# Restart bluetooth service (non-fatal in container/CI environments)
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print_info "Restarting bluetooth service to apply changes..."
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systemctl daemon-reload 2>/dev/null || true
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systemctl restart bluetooth 2>/dev/null || true
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else
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# Not root - use sudo
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# First, comment out any existing JustWorksRepairing lines
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sudo sed -i 's/^\s*JustWorksRepairing\s*=.*/#&/' "$BLUEZ_CONF"
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# Add our setting to the [General] section or append if no section exists
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if grep -q "^\[General\]" "$BLUEZ_CONF"; then
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# Insert after [General] section header
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sudo sed -i '/^\[General\]/a JustWorksRepairing = always' "$BLUEZ_CONF"
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else
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# No [General] section, append at end
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echo "" | sudo tee -a "$BLUEZ_CONF" > /dev/null
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echo "[General]" | sudo tee -a "$BLUEZ_CONF" > /dev/null
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echo "JustWorksRepairing = always" | sudo tee -a "$BLUEZ_CONF" > /dev/null
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fi
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# Restart bluetooth service (non-fatal in container/CI environments)
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print_info "Restarting bluetooth service to apply changes..."
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sudo systemctl daemon-reload 2>/dev/null || true
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sudo systemctl restart bluetooth 2>/dev/null || true
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fi
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# Verify the setting was applied
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sleep 1
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VERIFY_SETTING=$(grep -E "^JustWorksRepairing\s*=\s*always" "$BLUEZ_CONF" 2>/dev/null)
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if [ -n "$VERIFY_SETTING" ]; then
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print_success "JustWorksRepairing set to 'always' successfully"
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# Verify bluetooth service is running (skip in container environments)
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if systemctl is-active --quiet bluetooth 2>/dev/null; then
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print_success "Bluetooth service restarted successfully"
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elif command -v systemctl &> /dev/null && [ ! -f /.dockerenv ]; then
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# Only show warning if systemctl exists and we're not in a container
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print_warning "Bluetooth service may need manual restart"
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print_info "Check status with: sudo systemctl status bluetooth"
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else
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# Container environment or systemd not available
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print_info "Configuration updated (service restart skipped in container environment)"
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fi
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else
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print_error "Failed to set JustWorksRepairing in $BLUEZ_CONF"
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print_warning "You may need to manually add 'JustWorksRepairing = always' to [General] section"
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fi
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fi
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else
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print_warning "$BLUEZ_CONF not found"
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print_info "JustWorksRepairing configuration skipped (BlueZ may not be installed)"
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fi
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echo
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# Step 6: Configuration
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print_header "Configuration"
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