150 lines
3.1 KiB
Bash
Executable File
150 lines
3.1 KiB
Bash
Executable File
#!/usr/bin/env bash
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set -euo pipefail
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SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
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LAB_DIR="$(cd "$SCRIPT_DIR/.." && pwd)"
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REPO_ROOT="$(cd "$LAB_DIR/../.." && pwd)"
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source "$SCRIPT_DIR/config.sh"
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source "$REPO_ROOT/shared/minicorp/lib/minicorp.sh"
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source "$REPO_ROOT/shared/minicorp/topologies/client-router-server.sh"
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printf '\n'
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mc_log "Setting up $LAB_NAME"
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if [[ "$LAB_TOPOLOGY" != "client-router-server" ]]; then
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mc_error "Unsupported topology: $LAB_TOPOLOGY"
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exit 1
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fi
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# Verify the tools required by this lab.
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for command_name in python3 dnsmasq ss curl getent dig; do
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mc_require_command "$command_name"
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done
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# Build the MiniCorp network from a known state.
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# Suppress topology details so setup does not reveal investigation answers.
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mc_log "Building MiniCorp virtual network"
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mc_topology_client_router_server_up >/dev/null
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# Verify the topology without exposing the investigation answers.
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if ! mc_topology_client_router_server_check >/dev/null; then
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mc_error "MiniCorp topology validation failed."
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exit 1
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fi
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# Remove stale service output from a previous run.
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sudo rm -f \
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"$LAB_WEB_STDOUT" \
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"$LAB_DNS_STDOUT"
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#
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# Web service
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#
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mc_log "Starting MiniCorp web service"
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sudo ip netns exec "$MC_SERVER_NS" env \
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MINICORP_WEB_HOST="$MC_SERVER_ADDR" \
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MINICORP_WEB_PORT="$LAB_WEB_PORT" \
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python3 -u "$SCRIPT_DIR/web_server.py" \
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>"$LAB_WEB_STDOUT" 2>&1 &
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web_ready=0
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for attempt in {1..20}; do
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if mc_exec "$MC_SERVER_NS" ss -ltn |
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grep -F "$MC_SERVER_ADDR:$LAB_WEB_PORT" >/dev/null
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then
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web_ready=1
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break
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fi
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sleep 0.1
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done
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if [[ "$web_ready" -ne 1 ]]; then
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mc_error "Web service failed to start."
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if [[ -f "$LAB_WEB_STDOUT" ]]; then
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cat "$LAB_WEB_STDOUT" >&2
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fi
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exit 1
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fi
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#
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# DNS service
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#
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mc_log "Starting MiniCorp DNS service"
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sudo ip netns exec "$MC_ROUTER_NS" dnsmasq \
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--no-daemon \
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--interface="$MC_ROUTER_CLIENT_IF" \
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--listen-address="$MC_ROUTER_CLIENT_ADDR" \
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--bind-interfaces \
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--no-resolv \
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--no-hosts \
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--local=/minicorp.test/ \
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--host-record="$LAB_WEB_HOSTNAME,$MC_SERVER_ADDR" \
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--log-facility=- \
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>"$LAB_DNS_STDOUT" 2>&1 &
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dns_ready=0
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for attempt in {1..20}; do
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if mc_exec "$MC_ROUTER_NS" ss -lun |
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grep -F "$MC_ROUTER_CLIENT_ADDR:53" >/dev/null
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then
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dns_ready=1
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break
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fi
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sleep 0.1
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done
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if [[ "$dns_ready" -ne 1 ]]; then
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mc_error "DNS service failed to start."
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if [[ -f "$LAB_DNS_STDOUT" ]]; then
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cat "$LAB_DNS_STDOUT" >&2
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fi
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exit 1
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fi
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#
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# Client resolver
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#
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mc_log "Configuring client DNS resolver"
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sudo mkdir -p "$LAB_CLIENT_RESOLV_DIR"
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printf 'nameserver %s\n' "$MC_ROUTER_CLIENT_ADDR" |
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sudo tee "$LAB_CLIENT_RESOLV_CONF" >/dev/null
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#
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# Final health check
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#
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if ! mc_exec "$MC_CLIENT_NS" \
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getent ahostsv4 "$LAB_WEB_HOSTNAME" >/dev/null
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then
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mc_error "Client name resolution check failed."
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exit 1
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fi
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if ! mc_exec "$MC_CLIENT_NS" \
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curl --noproxy '*' -fsS \
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"http://$LAB_WEB_HOSTNAME:$LAB_WEB_PORT/" >/dev/null
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then
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mc_error "Client web request check failed."
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exit 1
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fi
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printf '\n'
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mc_log "$LAB_NAME is ready."
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