#
# \brief  Download data via fetchurl from lighttpd over a virtual network
# \author Norman Feske
# \date   2022-12-03
#

if {[have_board virt_qemu_riscv]} {
	puts "Run script is not supported on this platform (missing curl and libssh)."
	exit 0
}

proc ip_stack      { } { return lwip }
proc download_size { } { return "1M" }
proc audit         { } { return 1 }

build "lib/vfs_[ip_stack] lib/libc app/fetchurl lib/curl"

create_boot_directory

import_from_depot [depot_user]/src/[base_src] \
                  [depot_user]/src/init \
                  [depot_user]/src/nic_router \
                  [depot_user]/src/report_rom \
                  [depot_user]/src/libc \
                  [depot_user]/src/libssh \
                  [depot_user]/src/lighttpd \
                  [depot_user]/src/fetchurl \
                  [depot_user]/src/curl \
                  [depot_user]/src/openssl \
                  [depot_user]/src/posix \
                  [depot_user]/src/vfs \
                  [depot_user]/src/vfs_[ip_stack] \
                  [depot_user]/src/vfs_audit \
                  [depot_user]/src/zlib

proc lighttpd_config { } {
	return {
		server.port            = 80
		server.document-root   = "/website"
		server.event-handler   = "select"
		server.network-backend = "write"
		server.upload-dirs     = ( "/tmp" )
	}
}

proc socket_fs_plugin { } { return "<[ip_stack] dhcp=\"yes\"/>" }

proc socket_path { } { if {[audit]} { return "/audit" } else { return "/socket" } }

install_config {
<config>
	<parent-provides>
		<service name="ROM"/>
		<service name="LOG"/>
		<service name="RM"/>
		<service name="CPU"/>
		<service name="PD"/>
		<service name="IRQ"/>
		<service name="IO_PORT"/>
		<service name="IO_MEM"/>
	</parent-provides>
	<default-route>
		<any-service> <parent/> <any-child/> </any-service>
	</default-route>
	<default caps="100"/>

	<start name="timer">
		<resource name="RAM" quantum="1M"/>
		<provides><service name="Timer"/></provides>
	</start>

	<start name="nic_router" caps="200">
		<resource name="RAM" quantum="10M"/>
		<provides>
			<service name="Nic"/>
			<service name="Uplink"/>
		</provides>
		<config verbose_domain_state="yes">
			<policy label_prefix="lighttpd" domain="server"/>
			<policy label_prefix="fetchurl" domain="client"/>
			<domain name="server" interface="10.0.3.1/24">
				<dhcp-server ip_first="10.0.3.2" ip_last="10.0.3.2"/>
			</domain>
			<domain name="client" interface="10.0.4.1/24">
				<dhcp-server ip_first="10.0.4.2" ip_last="10.0.4.2"/>
				<tcp dst="10.0.3.2/0"> <permit-any domain="server"/> </tcp>
			</domain>
		</config>
	</start>

	<start name="lighttpd" caps="200">
		<resource name="RAM" quantum="32M" />
		<config>
			<arg value="lighttpd" />
			<arg value="-f" />
			<arg value="/etc/lighttpd/lighttpd.conf" />
			<arg value="-D" />
			<vfs>
				<dir name="dev">
					<log/> <null/> <inline name="rtc">2000-01-01 00:00</inline>
					<inline name="random">0123456789012345678901234567890123456789</inline>
				</dir>
				<dir name="socket"> } [socket_fs_plugin] { </dir>
				<dir name="audit"> <audit path="socket"/> </dir>
				<dir name="etc">
					<dir name="lighttpd">
						<inline name="lighttpd.conf">} [lighttpd_config] { </inline>
					</dir>
				</dir>
				<dir name="website">
					<zero size="} [download_size] {"/>
				</dir>
				<dir name="tmp"> <ram/> </dir>
			</vfs>
			<libc stdin="/dev/null" stdout="/dev/log" stderr="/dev/log"
			      rtc="/dev/rtc" rng="/dev/random" socket="} [socket_path] {"/>
		</config>
		<route>
			<service name="Nic"> <child name="nic_router"/> </service>
			<any-service> <parent/> <any-child/> </any-service>
		</route>
	</start>

	<start name="report_rom" caps="100">
		<resource name="RAM" quantum="1M"/>
		<provides> <service name="Report"/> <service name="ROM"/> </provides>
		<config verbose="yes"/>
	</start>

	<start name="fetchurl" caps="500">
		<resource name="RAM" quantum="32M"/>
		<config>
			<report delay_ms="1000" progress="yes"/>
			<vfs>
				<dir name="dev">
					<log/> <null/> <inline name="rtc">2000-01-01 00:00</inline>
					<inline name="random">01234567890123456789</inline>
				</dir>
				<dir name="socket"> } [socket_fs_plugin] { </dir>
				<dir name="audit"> <audit path="socket"/> </dir>
			</vfs>
			<libc stdout="/dev/log" stderr="/dev/log" rtc="/dev/rtc"
			      rng="/dev/random" socket="} [socket_path] {"/>
			<fetch url="http://10.0.3.2/zero" path="/dev/null" retry="3"/>
		</config>
	</start>

</config>}

build_boot_image [build_artifacts]

append qemu_args " -nographic "

run_genode_until {.*server started.*} 10

set download_start_time [clock milliseconds]

run_genode_until {.*"fetchurl" exited with exit value 0.*\n.*} 60 [output_spawn_id]

set download_end_time [clock milliseconds]

set download_duration_ms [expr ($download_end_time - $download_start_time)]

puts "\ntransferred [download_size] in $download_duration_ms ms"

if {[audit]} {

	# count switches between fetchurl and lighttpd based on the output of 'audit'
	set previous_label   ""
	set audit_messages   0
	set context_switches 0
	foreach line [split [strip_whitespace $output] "\n"] {
		if {[regexp -- {(\[.*-> audit\]).*} $line match label]} {
			incr audit_messages
			if {$label != $previous_label} {
				incr context_switches
				set previous_label $label
			}
		}
	}

	puts "\n$audit_messages audit messages"
	puts "\n$context_switches context switches between fetchurl and lighttpd"
}