test/cmd/wget.c - github/trini/u-boot - Gitiles

 // SPDX-License-Identifier: GPL-2.0
 /*
  * Copyright (c) 2022 Linaro
  *
  * (C) Copyright 2022
  * Ying-Chun Liu (PaulLiu) <paul.liu@linaro.org>
  */

 #include <command.h>
 #include <dm.h>
 #include <env.h>
 #include <fdtdec.h>
 #include <log.h>
 #include <malloc.h>
 #include <net.h>
 #include <net/tcp.h>
 #include <net/wget.h>
 #include <asm/eth.h>
 #include <dm/test.h>
 #include <dm/device-internal.h>
 #include <dm/uclass-internal.h>
 #include <test/lib.h>
 #include <test/test.h>
 #include <test/ut.h>

 #define SHIFT_TO_TCPHDRLEN_FIELD(x) ((x) << 4)
 #define LEN_B_TO_DW(x) ((x) >> 2)

 int net_set_ack_options(union tcp_build_pkt *b);

 static int sb_arp_handler(struct udevice *dev, void *packet,
 			  unsigned int len)
 {
 	struct eth_sandbox_priv *priv = dev_get_priv(dev);
 	struct arp_hdr *arp = packet + ETHER_HDR_SIZE;
 	int ret = 0;

 	if (ntohs(arp->ar_op) == ARPOP_REQUEST) {
 		priv->fake_host_ipaddr = net_read_ip(&arp->ar_spa);

 		ret = sandbox_eth_recv_arp_req(dev);
 		if (ret)
 			return ret;
 		ret = sandbox_eth_arp_req_to_reply(dev, packet, len);
 		return ret;
 	}

 	return -EPROTONOSUPPORT;
 }

 static int sb_syn_handler(struct udevice *dev, void *packet,
 			  unsigned int len)
 {
 	struct eth_sandbox_priv *priv = dev_get_priv(dev);
 	struct ethernet_hdr *eth = packet;
 	struct ip_tcp_hdr *tcp = packet + ETHER_HDR_SIZE;
 	struct ethernet_hdr *eth_send;
 	struct ip_tcp_hdr *tcp_send;

 	/* Don't allow the buffer to overrun */
 	if (priv->recv_packets >= PKTBUFSRX)
 		return 0;

 	eth_send = (void *)priv->recv_packet_buffer[priv->recv_packets];
 	memcpy(eth_send->et_dest, eth->et_src, ARP_HLEN);
 	memcpy(eth_send->et_src, priv->fake_host_hwaddr, ARP_HLEN);
 	eth_send->et_protlen = htons(PROT_IP);
 	tcp_send = (void *)eth_send + ETHER_HDR_SIZE;
 	tcp_send->tcp_src = tcp->tcp_dst;
 	tcp_send->tcp_dst = tcp->tcp_src;
 	tcp_send->tcp_seq = htonl(0);
 	tcp_send->tcp_ack = htonl(ntohl(tcp->tcp_seq) + 1);
 	tcp_send->tcp_hlen = SHIFT_TO_TCPHDRLEN_FIELD(LEN_B_TO_DW(TCP_HDR_SIZE));
 	tcp_send->tcp_flags = TCP_SYN | TCP_ACK;
 	tcp_send->tcp_win = htons(PKTBUFSRX * TCP_MSS >> TCP_SCALE);
 	tcp_send->tcp_xsum = 0;
 	tcp_send->tcp_ugr = 0;
 	tcp_send->tcp_xsum = tcp_set_pseudo_header((uchar *)tcp_send,
 						   tcp->ip_src,
 						   tcp->ip_dst,
 						   TCP_HDR_SIZE,
 						   IP_TCP_HDR_SIZE);
 	net_set_ip_header((uchar *)tcp_send,
 			  tcp->ip_src,
 			  tcp->ip_dst,
 			  IP_TCP_HDR_SIZE,
 			  IPPROTO_TCP);

 	priv->recv_packet_length[priv->recv_packets] =
 		ETHER_HDR_SIZE + IP_TCP_HDR_SIZE;
 	++priv->recv_packets;

 	return 0;
 }

 static int sb_ack_handler(struct udevice *dev, void *packet,
 			  unsigned int len)
 {
 	struct eth_sandbox_priv *priv = dev_get_priv(dev);
 	struct ethernet_hdr *eth = packet;
 	struct ip_tcp_hdr *tcp = packet + ETHER_HDR_SIZE;
 	struct ethernet_hdr *eth_send;
 	struct ip_tcp_hdr *tcp_send;
 	void *data;
 	int pkt_len;
 	int payload_len = 0;
 	const char *payload1 = "HTTP/1.1 200 OK\r\n"
 		"Content-Length: 30\r\n\r\n\r\n"
 		"<html><body>Hi</body></html>\r\n";
 	union tcp_build_pkt *b = (union tcp_build_pkt *)tcp;
 	const int recv_payload_len = len - net_set_ack_options(b) - IP_HDR_SIZE - ETHER_HDR_SIZE;
 	static int next_seq;
 	const int bottom_payload_len = 10;

 	/* Don't allow the buffer to overrun */
 	if (priv->recv_packets >= PKTBUFSRX)
 		return 0;

 	eth_send = (void *)priv->recv_packet_buffer[priv->recv_packets];
 	memcpy(eth_send->et_dest, eth->et_src, ARP_HLEN);
 	memcpy(eth_send->et_src, priv->fake_host_hwaddr, ARP_HLEN);
 	eth_send->et_protlen = htons(PROT_IP);
 	tcp_send = (void *)eth_send + ETHER_HDR_SIZE;
 	tcp_send->tcp_src = tcp->tcp_dst;
 	tcp_send->tcp_dst = tcp->tcp_src;
 	data = (void *)tcp_send + IP_TCP_HDR_SIZE;

 	if (ntohl(tcp->tcp_seq) == 1 && ntohl(tcp->tcp_ack) == 1 && recv_payload_len == 0) {
 		// ignore ACK for three-way handshaking
 		return 0;
 	} else if (ntohl(tcp->tcp_seq) == 1 && ntohl(tcp->tcp_ack) == 1) {
 		// recv HTTP request message and reply top half data
 		tcp_send->tcp_seq = htonl(ntohl(tcp->tcp_ack));
 		tcp_send->tcp_ack = htonl(ntohl(tcp->tcp_seq) + recv_payload_len);

 		payload_len = strlen(payload1) - bottom_payload_len;
 		memcpy(data, payload1, payload_len);
 		tcp_send->tcp_flags = TCP_ACK;

 		next_seq = ntohl(tcp_send->tcp_seq) + payload_len;
 	} else if (ntohl(tcp->tcp_ack) == next_seq) {
 		// reply bottom half data
 		const int top_payload_len = strlen(payload1) - bottom_payload_len;

 		tcp_send->tcp_seq = htonl(next_seq);
 		tcp_send->tcp_ack = htonl(ntohl(tcp->tcp_seq) + recv_payload_len);

 		payload_len = bottom_payload_len;
 		memcpy(data, payload1 + top_payload_len, payload_len);
 		tcp_send->tcp_flags = TCP_ACK;
 	} else {
 		// close connection
 		tcp_send->tcp_seq = htonl(ntohl(tcp->tcp_ack));
 		tcp_send->tcp_ack = htonl(ntohl(tcp->tcp_seq) + 1);
 		payload_len = 0;
 		tcp_send->tcp_flags = TCP_ACK | TCP_FIN;
 	}

 	tcp_send->tcp_hlen = SHIFT_TO_TCPHDRLEN_FIELD(LEN_B_TO_DW(TCP_HDR_SIZE));
 	tcp_send->tcp_win = htons(PKTBUFSRX * TCP_MSS >> TCP_SCALE);
 	tcp_send->tcp_xsum = 0;
 	tcp_send->tcp_ugr = 0;
 	pkt_len = IP_TCP_HDR_SIZE + payload_len;
 	tcp_send->tcp_xsum = tcp_set_pseudo_header((uchar *)tcp_send,
 						   tcp->ip_src,
 						   tcp->ip_dst,
 						   pkt_len - IP_HDR_SIZE,
 						   pkt_len);
 	net_set_ip_header((uchar *)tcp_send,
 			  tcp->ip_src,
 			  tcp->ip_dst,
 			  pkt_len,
 			  IPPROTO_TCP);

 	priv->recv_packet_length[priv->recv_packets] =
 		ETHER_HDR_SIZE + IP_TCP_HDR_SIZE + payload_len;
 	++priv->recv_packets;

 	return 0;
 }

 static int sb_http_handler(struct udevice *dev, void *packet,
 			   unsigned int len)
 {
 	struct ethernet_hdr *eth = packet;
 	struct ip_hdr *ip;
 	struct ip_tcp_hdr *tcp;

 	if (ntohs(eth->et_protlen) == PROT_ARP) {
 		return sb_arp_handler(dev, packet, len);
 	} else if (ntohs(eth->et_protlen) == PROT_IP) {
 		ip = packet + ETHER_HDR_SIZE;
 		if (ip->ip_p == IPPROTO_TCP) {
 			tcp = packet + ETHER_HDR_SIZE;
 			if (tcp->tcp_flags == TCP_SYN)
 				return sb_syn_handler(dev, packet, len);
 			else if (tcp->tcp_flags & TCP_ACK && !(tcp->tcp_flags & TCP_SYN))
 				return sb_ack_handler(dev, packet, len);
 			return 0;
 		}
 		return -EPROTONOSUPPORT;
 	}

 	return -EPROTONOSUPPORT;
 }

 static int net_test_wget(struct unit_test_state *uts)
 {
 	sandbox_eth_set_tx_handler(0, sb_http_handler);
 	sandbox_eth_set_priv(0, uts);

 	env_set("ethact", "eth@10002000");
 	env_set("ethrotate", "no");
 	env_set("loadaddr", "0x20000");
 	ut_assertok(run_command("wget ${loadaddr} 1.1.2.2:/index.html", 0));
 	ut_assert_nextline("HTTP/1.1 200 OK");
 	ut_assert_nextline("Packets received 5, Transfer Successful");
 	ut_assert_nextline("Bytes transferred = 32 (20 hex)");

 	sandbox_eth_set_tx_handler(0, NULL);

 	run_command("md5sum ${loadaddr} ${filesize}", 0);
 	ut_assert_nextline("md5 for 00020000 ... 0002001f ==> 234af48e94b0085060249ecb5942ab57");
 	ut_assert_console_end();

 	return 0;
 }
 LIB_TEST(net_test_wget, UTF_CONSOLE);
	// SPDX-License-Identifier: GPL-2.0
	/*
	* Copyright (c) 2022 Linaro
	*
	* (C) Copyright 2022
	* Ying-Chun Liu (PaulLiu) <paul.liu@linaro.org>
	*/

	#include <command.h>
	#include <dm.h>
	#include <env.h>
	#include <fdtdec.h>
	#include <log.h>
	#include <malloc.h>
	#include <net.h>
	#include <net/tcp.h>
	#include <net/wget.h>
	#include <asm/eth.h>
	#include <dm/test.h>
	#include <dm/device-internal.h>
	#include <dm/uclass-internal.h>
	#include <test/lib.h>
	#include <test/test.h>
	#include <test/ut.h>

	#define SHIFT_TO_TCPHDRLEN_FIELD(x) ((x) << 4)
	#define LEN_B_TO_DW(x) ((x) >> 2)

	int net_set_ack_options(union tcp_build_pkt *b);

	static int sb_arp_handler(struct udevice dev, void packet,
	unsigned int len)
	{
	struct eth_sandbox_priv *priv = dev_get_priv(dev);
	struct arp_hdr *arp = packet + ETHER_HDR_SIZE;
	int ret = 0;

	if (ntohs(arp->ar_op) == ARPOP_REQUEST) {
	priv->fake_host_ipaddr = net_read_ip(&arp->ar_spa);

	ret = sandbox_eth_recv_arp_req(dev);
	if (ret)
	return ret;
	ret = sandbox_eth_arp_req_to_reply(dev, packet, len);
	return ret;
	}

	return -EPROTONOSUPPORT;
	}

	static int sb_syn_handler(struct udevice dev, void packet,
	unsigned int len)
	{
	struct eth_sandbox_priv *priv = dev_get_priv(dev);
	struct ethernet_hdr *eth = packet;
	struct ip_tcp_hdr *tcp = packet + ETHER_HDR_SIZE;
	struct ethernet_hdr *eth_send;
	struct ip_tcp_hdr *tcp_send;

	/* Don't allow the buffer to overrun */
	if (priv->recv_packets >= PKTBUFSRX)
	return 0;

	eth_send = (void *)priv->recv_packet_buffer[priv->recv_packets];
	memcpy(eth_send->et_dest, eth->et_src, ARP_HLEN);
	memcpy(eth_send->et_src, priv->fake_host_hwaddr, ARP_HLEN);
	eth_send->et_protlen = htons(PROT_IP);
	tcp_send = (void *)eth_send + ETHER_HDR_SIZE;
	tcp_send->tcp_src = tcp->tcp_dst;
	tcp_send->tcp_dst = tcp->tcp_src;
	tcp_send->tcp_seq = htonl(0);
	tcp_send->tcp_ack = htonl(ntohl(tcp->tcp_seq) + 1);
	tcp_send->tcp_hlen = SHIFT_TO_TCPHDRLEN_FIELD(LEN_B_TO_DW(TCP_HDR_SIZE));
	tcp_send->tcp_flags = TCP_SYN \| TCP_ACK;
	tcp_send->tcp_win = htons(PKTBUFSRX * TCP_MSS >> TCP_SCALE);
	tcp_send->tcp_xsum = 0;
	tcp_send->tcp_ugr = 0;
	tcp_send->tcp_xsum = tcp_set_pseudo_header((uchar *)tcp_send,
	tcp->ip_src,
	tcp->ip_dst,
	TCP_HDR_SIZE,
	IP_TCP_HDR_SIZE);
	net_set_ip_header((uchar *)tcp_send,
	tcp->ip_src,
	tcp->ip_dst,
	IP_TCP_HDR_SIZE,
	IPPROTO_TCP);

	priv->recv_packet_length[priv->recv_packets] =
	ETHER_HDR_SIZE + IP_TCP_HDR_SIZE;
	++priv->recv_packets;

	return 0;
	}

	static int sb_ack_handler(struct udevice dev, void packet,
	unsigned int len)
	{
	struct eth_sandbox_priv *priv = dev_get_priv(dev);
	struct ethernet_hdr *eth = packet;
	struct ip_tcp_hdr *tcp = packet + ETHER_HDR_SIZE;
	struct ethernet_hdr *eth_send;
	struct ip_tcp_hdr *tcp_send;
	void *data;
	int pkt_len;
	int payload_len = 0;
	const char *payload1 = "HTTP/1.1 200 OK\r\n"
	"Content-Length: 30\r\n\r\n\r\n"
	"<html><body>Hi</body></html>\r\n";
	union tcp_build_pkt b = (union tcp_build_pkt )tcp;
	const int recv_payload_len = len - net_set_ack_options(b) - IP_HDR_SIZE - ETHER_HDR_SIZE;
	static int next_seq;
	const int bottom_payload_len = 10;

	/* Don't allow the buffer to overrun */
	if (priv->recv_packets >= PKTBUFSRX)
	return 0;

	eth_send = (void *)priv->recv_packet_buffer[priv->recv_packets];
	memcpy(eth_send->et_dest, eth->et_src, ARP_HLEN);
	memcpy(eth_send->et_src, priv->fake_host_hwaddr, ARP_HLEN);
	eth_send->et_protlen = htons(PROT_IP);
	tcp_send = (void *)eth_send + ETHER_HDR_SIZE;
	tcp_send->tcp_src = tcp->tcp_dst;
	tcp_send->tcp_dst = tcp->tcp_src;
	data = (void *)tcp_send + IP_TCP_HDR_SIZE;

	if (ntohl(tcp->tcp_seq) == 1 && ntohl(tcp->tcp_ack) == 1 && recv_payload_len == 0) {
	// ignore ACK for three-way handshaking
	return 0;
	} else if (ntohl(tcp->tcp_seq) == 1 && ntohl(tcp->tcp_ack) == 1) {
	// recv HTTP request message and reply top half data
	tcp_send->tcp_seq = htonl(ntohl(tcp->tcp_ack));
	tcp_send->tcp_ack = htonl(ntohl(tcp->tcp_seq) + recv_payload_len);

	payload_len = strlen(payload1) - bottom_payload_len;
	memcpy(data, payload1, payload_len);
	tcp_send->tcp_flags = TCP_ACK;

	next_seq = ntohl(tcp_send->tcp_seq) + payload_len;
	} else if (ntohl(tcp->tcp_ack) == next_seq) {
	// reply bottom half data
	const int top_payload_len = strlen(payload1) - bottom_payload_len;

	tcp_send->tcp_seq = htonl(next_seq);
	tcp_send->tcp_ack = htonl(ntohl(tcp->tcp_seq) + recv_payload_len);

	payload_len = bottom_payload_len;
	memcpy(data, payload1 + top_payload_len, payload_len);
	tcp_send->tcp_flags = TCP_ACK;
	} else {
	// close connection
	tcp_send->tcp_seq = htonl(ntohl(tcp->tcp_ack));
	tcp_send->tcp_ack = htonl(ntohl(tcp->tcp_seq) + 1);
	payload_len = 0;
	tcp_send->tcp_flags = TCP_ACK \| TCP_FIN;
	}

	tcp_send->tcp_hlen = SHIFT_TO_TCPHDRLEN_FIELD(LEN_B_TO_DW(TCP_HDR_SIZE));
	tcp_send->tcp_win = htons(PKTBUFSRX * TCP_MSS >> TCP_SCALE);
	tcp_send->tcp_xsum = 0;
	tcp_send->tcp_ugr = 0;
	pkt_len = IP_TCP_HDR_SIZE + payload_len;
	tcp_send->tcp_xsum = tcp_set_pseudo_header((uchar *)tcp_send,
	tcp->ip_src,
	tcp->ip_dst,
	pkt_len - IP_HDR_SIZE,
	pkt_len);
	net_set_ip_header((uchar *)tcp_send,
	tcp->ip_src,
	tcp->ip_dst,
	pkt_len,
	IPPROTO_TCP);

	priv->recv_packet_length[priv->recv_packets] =
	ETHER_HDR_SIZE + IP_TCP_HDR_SIZE + payload_len;
	++priv->recv_packets;

	return 0;
	}

	static int sb_http_handler(struct udevice dev, void packet,
	unsigned int len)
	{
	struct ethernet_hdr *eth = packet;
	struct ip_hdr *ip;
	struct ip_tcp_hdr *tcp;

	if (ntohs(eth->et_protlen) == PROT_ARP) {
	return sb_arp_handler(dev, packet, len);
	} else if (ntohs(eth->et_protlen) == PROT_IP) {
	ip = packet + ETHER_HDR_SIZE;
	if (ip->ip_p == IPPROTO_TCP) {
	tcp = packet + ETHER_HDR_SIZE;
	if (tcp->tcp_flags == TCP_SYN)
	return sb_syn_handler(dev, packet, len);
	else if (tcp->tcp_flags & TCP_ACK && !(tcp->tcp_flags & TCP_SYN))
	return sb_ack_handler(dev, packet, len);
	return 0;
	}
	return -EPROTONOSUPPORT;
	}

	return -EPROTONOSUPPORT;
	}

	static int net_test_wget(struct unit_test_state *uts)
	{
	sandbox_eth_set_tx_handler(0, sb_http_handler);
	sandbox_eth_set_priv(0, uts);

	env_set("ethact", "eth@10002000");
	env_set("ethrotate", "no");
	env_set("loadaddr", "0x20000");
	ut_assertok(run_command("wget ${loadaddr} 1.1.2.2:/index.html", 0));
	ut_assert_nextline("HTTP/1.1 200 OK");
	ut_assert_nextline("Packets received 5, Transfer Successful");
	ut_assert_nextline("Bytes transferred = 32 (20 hex)");

	sandbox_eth_set_tx_handler(0, NULL);

	run_command("md5sum ${loadaddr} ${filesize}", 0);
	ut_assert_nextline("md5 for 00020000 ... 0002001f ==> 234af48e94b0085060249ecb5942ab57");
	ut_assert_console_end();

	return 0;
	}
	LIB_TEST(net_test_wget, UTF_CONSOLE);