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lwip/proj/unixsim/apps/shell.c

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/*
* Copyright (c) 2001, 2002 Swedish Institute of Computer Science.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
* SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
* OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
* OF SUCH DAMAGE.
*
* This file is part of the lwIP TCP/IP stack.
*
* Author: Adam Dunkels <adam@sics.se>
*
*/
#include <string.h>
#include <stdio.h>
#include "lwip/mem.h"
#include "lwip/debug.h"
#include "lwip/def.h"
#include "lwip/api.h"
#include "lwip/stats.h"
static unsigned char buffer[1024];
struct command {
struct netconn *conn;
s8_t (* exec)(struct command *);
u8_t nargs;
char *args[10];
};
/* Following #undefs are here to keep compiler from issuing warnings
about them being double defined. (They are defined in lwip/inet.h
as well as the Unix #includes below.) */
#undef htonl
#undef ntohl
#undef htons
#undef ntohs
#undef HTONL
#undef NTOHL
#undef HTONS
#undef NTOHS
#undef IP_HDRINCL
#include <stdio.h>
#include <errno.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <stdlib.h>
#include <limits.h>
#define ESUCCESS 0
#define ESYNTAX -1
#define ETOOFEW -2
#define ETOOMANY -3
#define ECLOSED -4
#define NCONNS 10
static struct netconn *conns[NCONNS];
static char help_msg[] = "Avaliable commands:\n\
open [IP address] [TCP port]: opens a TCP connection to the specified address.\n\
lstn [TCP port]: sets up a server on the specified port.\n\
acpt [connection #]: waits for an incoming connection request.\n\
send [connection #] [message]: sends a message on a TCP connection.\n\
udpc [local UDP port] [IP address] [remote port]: opens a UDP \"connection\".\n\
udpl [local UDP port] [IP address] [remote port]: opens a UDP-Lite \"connection\".\n\
udpn [local UDP port] [IP address] [remote port]: opens a UDP \"connection\" without checksums.\n\
udpb [local port] [remote port]: opens a UDP broadcast \"connection\".\n\
usnd [connection #] [message]: sends a message on a UDP connection.\n\
recv [connection #]: recieves data on a TCP or UDP connection.\n\
clos [connection #]: closes a TCP or UDP connection.\n\
stat: prints out lwIP statistics.\n\
quit: quits.\n";
static char *stat_msgs[] = {
"Link level * transmitted ",
" retransmitted ",
" * received ",
" forwarded ",
" * dropped ",
" * checksum errors ",
" * length errors ",
" * memory errors ",
" routing errors ",
" protocol errors ",
" option errors ",
" * misc errors ",
" cache hits ",
"IP * transmitted ",
" retransmitted ",
" * received ",
" * forwarded ",
" * dropped ",
" * checksum errors ",
" * length errors ",
" * memory errors ",
" * routing errors ",
" * protocol errors ",
" * option errors ",
" * misc errors ",
" cache hits ",
"ICMP * transmitted ",
" retransmitted ",
" * received ",
" forwarded ",
" * dropped ",
" * checksum errors ",
" length errors ",
" * memory errors ",
" routing errors ",
" * protocol errors ",
" option errors ",
" * misc errors ",
" cache hits ",
"UDP * transmitted ",
" retransmitted ",
" * received ",
" forwarded ",
" * dropped ",
" * checksum errors ",
" * length errors ",
" * memory errors ",
" * routing errors ",
" * protocol errors ",
" option errors ",
" * misc errors ",
" cache hits ",
"TCP * transmitted ",
" * retransmitted ",
" * received ",
" forwarded ",
" * dropped ",
" * checksum errors ",
" * length errors ",
" * memory errors ",
" * routing errors ",
" * protocol errors ",
" * option errors ",
" * misc errors ",
" * cache hits ",
"Pbufs * avaiable ",
" * used ",
" * high water mark ",
" * errors ",
" reclaimed ",
" pbuf_alloc() locked ",
" pbuf_refresh() locked ",
"Memory * avaliable ",
" * used ",
" * high water mark ",
" * errors ",
" * reclaimed ",
"Memp PBUF * avaliable ",
" * used ",
" * high water mark ",
" * errors ",
" * reclaimed ",
"UDP PCB * avaliable ",
" * used ",
" * high water mark ",
" * errors ",
" * reclaimed ",
"TCP PCB * avaliable ",
" * used ",
" * high water mark ",
" * errors ",
" * reclaimed ",
"TCP LISTEN * avaliable ",
" * used ",
" * high water mark ",
" * errors ",
" * reclaimed ",
"TCP SEG * avaliable ",
" * used ",
" * high water mark ",
" * errors ",
" * reclaimed ",
"Netbufs * avaliable ",
" * used ",
" * high water mark ",
" * errors ",
" * reclaimed ",
"Netconns * avaliable ",
" * used ",
" * high water mark ",
" * errors ",
" * reclaimed ",
"API msgs * avaliable ",
" * used ",
" * high water mark ",
" * errors ",
" * reclaimed ",
"TCPIP msgs * avaliable ",
" * used ",
" * high water mark ",
" * errors ",
" * reclaimed ",
"Timeouts * avaliable ",
" * used ",
" * high water mark ",
" * errors ",
" * reclaimed ",
"Semaphores * used ",
" * high water mark ",
" * errors ",
"Mailboxes * used ",
" * high water mark ",
" * errors "
};
/*-----------------------------------------------------------------------------------*/
static void
sendstr(const char *str, struct netconn *conn)
{
netconn_write(conn, (void *)str, strlen(str), NETCONN_NOCOPY);
}
/*-----------------------------------------------------------------------------------*/
static s8_t
com_open(struct command *com)
{
struct ip_addr ipaddr;
u16_t port;
int i;
err_t err;
if(inet_aton(com->args[0], (struct in_addr *)&ipaddr) == -1) {
sendstr(strerror(errno), com->conn);
return ESYNTAX;
}
port = strtol(com->args[1], NULL, 10);
/* Find the first unused connection in conns. */
for(i = 0; i < NCONNS && conns[i] != NULL; i++);
if(i == NCONNS) {
sendstr("No more connections avaliable, sorry.\n", com->conn);
return ESUCCESS;
}
sendstr("Opening connection to ", com->conn);
netconn_write(com->conn, com->args[0], strlen(com->args[0]), NETCONN_COPY);
sendstr(":", com->conn);
netconn_write(com->conn, com->args[1], strlen(com->args[1]), NETCONN_COPY);
sendstr("\n", com->conn);
conns[i] = netconn_new(NETCONN_TCP);
if(conns[i] == NULL) {
sendstr("Could not create connection identifier (out of memory).\n", com->conn);
return ESUCCESS;
}
err = netconn_connect(conns[i], &ipaddr, port);
if(err != ERR_OK) {
fprintf(stderr, "error %s\n", lwip_strerr(err));
sendstr("Could not connect to remote host: ", com->conn);
#ifdef LWIP_DEBUG
sendstr(lwip_strerr(err), com->conn);
#else
sendstr("(debugging must be turned on for error message to appear)", com->conn);
#endif /* LWIP_DEBUG */
sendstr("\n", com->conn);
netconn_delete(conns[i]);
conns[i] = NULL;
return ESUCCESS;
}
sendstr("Opened connection, connection identifier is ", com->conn);
sprintf((char *)buffer, "%d\n", i);
netconn_write(com->conn, buffer, strlen((const char *)buffer), NETCONN_COPY);
return ESUCCESS;
}
/*-----------------------------------------------------------------------------------*/
static s8_t
com_lstn(struct command *com)
{
u16_t port;
int i;
err_t err;
port = strtol(com->args[0], NULL, 10);
/* Find the first unused connection in conns. */
for(i = 0; i < NCONNS && conns[i] != NULL; i++);
if(i == NCONNS) {
sendstr("No more connections avaliable, sorry.\n", com->conn);
return ESUCCESS;
}
sendstr("Opening a listening connection on port ", com->conn);
netconn_write(com->conn, com->args[0], strlen(com->args[0]), NETCONN_COPY);
sendstr("\n", com->conn);
conns[i] = netconn_new(NETCONN_TCP);
if(conns[i] == NULL) {
sendstr("Could not create connection identifier (out of memory).\n", com->conn);
return ESUCCESS;
}
err = netconn_bind(conns[i], IP_ADDR_ANY, port);
if(err != ERR_OK) {
netconn_delete(conns[i]);
conns[i] = NULL;
sendstr("Could not bind: ", com->conn);
#ifdef LWIP_DEBUG
sendstr(lwip_strerr(err), com->conn);
#else
sendstr("(debugging must be turned on for error message to appear)", com->conn);
#endif /* LWIP_DEBUG */
sendstr("\n", com->conn);
return ESUCCESS;
}
err = netconn_listen(conns[i]);
if(err != ERR_OK) {
netconn_delete(conns[i]);
conns[i] = NULL;
sendstr("Could not listen: ", com->conn);
#ifdef LWIP_DEBUG
sendstr(lwip_strerr(err), com->conn);
#else
sendstr("(debugging must be turned on for error message to appear)", com->conn);
#endif /* LWIP_DEBUG */
sendstr("\n", com->conn);
return ESUCCESS;
}
sendstr("Opened connection, connection identifier is ", com->conn);
sprintf((char *)buffer, "%d\n", i);
netconn_write(com->conn, buffer, strlen((const char *)buffer), NETCONN_COPY);
return ESUCCESS;
}
/*-----------------------------------------------------------------------------------*/
/*-----------------------------------------------------------------------------------*/
static s8_t
com_clos(struct command *com)
{
int i;
err_t err;
i = strtol(com->args[0], NULL, 10);
if(i > NCONNS) {
sendstr("Connection identifier too high.\n", com->conn);
return ESUCCESS;
}
if(conns[i] == NULL) {
sendstr("Connection identifier not in use.\n", com->conn);
return ESUCCESS;
}
err = netconn_close(conns[i]);
if(err != ERR_OK) {
sendstr("Could not close connection: ", com->conn);
#ifdef LWIP_DEBUG
sendstr(lwip_strerr(err), com->conn);
#else
sendstr("(debugging must be turned on for error message to appear)", com->conn);
#endif /* LWIP_DEBUG */
sendstr("\n", com->conn);
return ESUCCESS;
}
sendstr("Connection closed.\n", com->conn);
netconn_delete(conns[i]);
conns[i] = NULL;
return ESUCCESS;
}
/*-----------------------------------------------------------------------------------*/
static s8_t
com_acpt(struct command *com)
{
int i, j;
/* Find the first unused connection in conns. */
for(j = 0; j < NCONNS && conns[j] != NULL; j++);
if(j == NCONNS) {
sendstr("No more connections avaliable, sorry.\n", com->conn);
return ESUCCESS;
}
i = strtol(com->args[0], NULL, 10);
if(i > NCONNS) {
sendstr("Connection identifier too high.\n", com->conn);
return ESUCCESS;
}
if(conns[i] == NULL) {
sendstr("Connection identifier not in use.\n", com->conn);
return ESUCCESS;
}
conns[j] = netconn_accept(conns[i]);
if(conns[j] == NULL) {
sendstr("Could not accept connection: ", com->conn);
#ifdef LWIP_DEBUG
sendstr(lwip_strerr(netconn_err(conns[i])), com->conn);
#else
sendstr("(debugging must be turned on for error message to appear)", com->conn);
#endif /* LWIP_DEBUG */
sendstr("\n", com->conn);
return ESUCCESS;
}
sendstr("Accepted connection, connection identifier for new connection is ", com->conn);
sprintf((char *)buffer, "%d\n", j);
netconn_write(com->conn, buffer, strlen((const char *)buffer), NETCONN_COPY);
return ESUCCESS;
}
/*-----------------------------------------------------------------------------------*/
static s8_t
com_stat(struct command *com)
{
int i;
char buf[100];
u16_t len;
for(i = 0; i < sizeof(struct stats_) / 2; i++) {
len = sprintf(buf, "%d", ((u16_t *)&stats)[i]);
sendstr(stat_msgs[i], com->conn);
netconn_write(com->conn, buf, len, NETCONN_COPY);
sendstr("\n", com->conn);
}
return ESUCCESS;
}
/*-----------------------------------------------------------------------------------*/
static s8_t
com_send(struct command *com)
{
int i;
err_t err;
int len;
i = strtol(com->args[0], NULL, 10);
if(i > NCONNS) {
sendstr("Connection identifier too high.\n", com->conn);
return ESUCCESS;
}
if(conns[i] == NULL) {
sendstr("Connection identifier not in use.\n", com->conn);
return ESUCCESS;
}
len = strlen(com->args[1]);
com->args[1][len] = '\r';
com->args[1][len + 1] = '\n';
com->args[1][len + 2] = 0;
err = netconn_write(conns[i], com->args[1], len + 3, NETCONN_COPY);
if(err != ERR_OK) {
sendstr("Could not send data: ", com->conn);
#ifdef LWIP_DEBUG
sendstr(lwip_strerr(err), com->conn);
#else
sendstr("(debugging must be turned on for error message to appear)", com->conn);
#endif /* LWIP_DEBUG */
sendstr("\n", com->conn);
return ESUCCESS;
}
sendstr("Data enqueued for sending.\n", com->conn);
return ESUCCESS;
}
/*-----------------------------------------------------------------------------------*/
static s8_t
com_recv(struct command *com)
{
int i;
err_t err;
struct netbuf *buf;
u16_t len;
i = strtol(com->args[0], NULL, 10);
if(i > NCONNS) {
sendstr("Connection identifier too high.\n", com->conn);
return ESUCCESS;
}
if(conns[i] == NULL) {
sendstr("Connection identifier not in use.\n", com->conn);
return ESUCCESS;
}
buf = netconn_recv(conns[i]);
if(buf != NULL) {
netbuf_copy(buf, buffer, 1024);
len = netbuf_len(buf);
sendstr("Reading from connection:\n", com->conn);
netconn_write(com->conn, buffer, len, NETCONN_COPY);
netbuf_delete(buf);
} else {
sendstr("EOF.\n", com->conn);
}
err = netconn_err(conns[i]);
if(err != ERR_OK) {
sendstr("Could not receive data: ", com->conn);
#ifdef LWIP_DEBUG
sendstr(lwip_strerr(err), com->conn);
#else
sendstr("(debugging must be turned on for error message to appear)", com->conn);
#endif /* LWIP_DEBUG */
sendstr("\n", com->conn);
return ESUCCESS;
}
return ESUCCESS;
}
/*-----------------------------------------------------------------------------------*/
static s8_t
com_udpc(struct command *com)
{
struct ip_addr ipaddr;
u16_t lport, rport;
int i;
err_t err;
lport = strtol(com->args[0], NULL, 10);
if(inet_aton(com->args[1], (struct in_addr *)&ipaddr) == -1) {
sendstr(strerror(errno), com->conn);
return ESYNTAX;
}
rport = strtol(com->args[2], NULL, 10);
/* Find the first unused connection in conns. */
for(i = 0; i < NCONNS && conns[i] != NULL; i++);
if(i == NCONNS) {
sendstr("No more connections avaliable, sorry.\n", com->conn);
return ESUCCESS;
}
sendstr("Setting up UDP connection from port ", com->conn);
netconn_write(com->conn, com->args[0], strlen(com->args[0]), NETCONN_COPY);
sendstr(" to ", com->conn);
netconn_write(com->conn, com->args[1], strlen(com->args[1]), NETCONN_COPY);
sendstr(":", com->conn);
netconn_write(com->conn, com->args[2], strlen(com->args[2]), NETCONN_COPY);
sendstr("\n", com->conn);
conns[i] = netconn_new(NETCONN_UDP);
if(conns[i] == NULL) {
sendstr("Could not create connection identifier (out of memory).\n", com->conn);
return ESUCCESS;
}
err = netconn_connect(conns[i], &ipaddr, rport);
if(err != ERR_OK) {
netconn_delete(conns[i]);
conns[i] = NULL;
sendstr("Could not connect to remote host: ", com->conn);
#ifdef LWIP_DEBUG
sendstr(lwip_strerr(err), com->conn);
#else
sendstr("(debugging must be turned on for error message to appear)", com->conn);
#endif /* LWIP_DEBUG */
sendstr("\n", com->conn);
return ESUCCESS;
}
err = netconn_bind(conns[i], IP_ADDR_ANY, lport);
if(err != ERR_OK) {
netconn_delete(conns[i]);
conns[i] = NULL;
sendstr("Could not bind: ", com->conn);
#ifdef LWIP_DEBUG
sendstr(lwip_strerr(err), com->conn);
#else
sendstr("(debugging must be turned on for error message to appear)", com->conn);
#endif /* LWIP_DEBUG */
sendstr("\n", com->conn);
return ESUCCESS;
}
sendstr("Connection set up, connection identifier is ", com->conn);
sprintf((char *)buffer, "%d\n", i);
netconn_write(com->conn, buffer, strlen((const char *)buffer), NETCONN_COPY);
return ESUCCESS;
}
/*-----------------------------------------------------------------------------------*/
static s8_t
com_udpl(struct command *com)
{
struct ip_addr ipaddr;
u16_t lport, rport;
int i;
err_t err;
lport = strtol(com->args[0], NULL, 10);
if(inet_aton(com->args[1], (struct in_addr *)&ipaddr) == -1) {
sendstr(strerror(errno), com->conn);
return ESYNTAX;
}
rport = strtol(com->args[2], NULL, 10);
/* Find the first unused connection in conns. */
for(i = 0; i < NCONNS && conns[i] != NULL; i++);
if(i == NCONNS) {
sendstr("No more connections avaliable, sorry.\n", com->conn);
return ESUCCESS;
}
sendstr("Setting up UDP-Lite connection from port ", com->conn);
netconn_write(com->conn, com->args[0], strlen(com->args[0]), NETCONN_COPY);
sendstr(" to ", com->conn);
netconn_write(com->conn, com->args[1], strlen(com->args[1]), NETCONN_COPY);
sendstr(":", com->conn);
netconn_write(com->conn, com->args[2], strlen(com->args[2]), NETCONN_COPY);
sendstr("\n", com->conn);
conns[i] = netconn_new(NETCONN_UDPLITE);
if(conns[i] == NULL) {
sendstr("Could not create connection identifier (out of memory).\n", com->conn);
return ESUCCESS;
}
err = netconn_connect(conns[i], &ipaddr, rport);
if(err != ERR_OK) {
netconn_delete(conns[i]);
conns[i] = NULL;
sendstr("Could not connect to remote host: ", com->conn);
#ifdef LWIP_DEBUG
sendstr(lwip_strerr(err), com->conn);
#else
sendstr("(debugging must be turned on for error message to appear)", com->conn);
#endif /* LWIP_DEBUG */
sendstr("\n", com->conn);
return ESUCCESS;
}
err = netconn_bind(conns[i], IP_ADDR_ANY, lport);
if(err != ERR_OK) {
netconn_delete(conns[i]);
conns[i] = NULL;
sendstr("Could not bind: ", com->conn);
#ifdef LWIP_DEBUG
sendstr(lwip_strerr(err), com->conn);
#else
sendstr("(debugging must be turned on for error message to appear)", com->conn);
#endif /* LWIP_DEBUG */
sendstr("\n", com->conn);
return ESUCCESS;
}
sendstr("Connection set up, connection identifier is ", com->conn);
sprintf((char *)buffer, "%d\n", i);
netconn_write(com->conn, buffer, strlen((const char *)buffer), NETCONN_COPY);
return ESUCCESS;
}
/*-----------------------------------------------------------------------------------*/
static s8_t
com_udpn(struct command *com)
{
struct ip_addr ipaddr;
u16_t lport, rport;
int i;
err_t err;
lport = strtol(com->args[0], NULL, 10);
if(inet_aton(com->args[1], (struct in_addr *)&ipaddr) == -1) {
sendstr(strerror(errno), com->conn);
return ESYNTAX;
}
rport = strtol(com->args[2], NULL, 10);
/* Find the first unused connection in conns. */
for(i = 0; i < NCONNS && conns[i] != NULL; i++);
if(i == NCONNS) {
sendstr("No more connections avaliable, sorry.\n", com->conn);
return ESUCCESS;
}
sendstr("Setting up UDP connection without checksums from port ", com->conn);
netconn_write(com->conn, com->args[0], strlen(com->args[0]), NETCONN_COPY);
sendstr(" to ", com->conn);
netconn_write(com->conn, com->args[1], strlen(com->args[1]), NETCONN_COPY);
sendstr(":", com->conn);
netconn_write(com->conn, com->args[2], strlen(com->args[2]), NETCONN_COPY);
sendstr("\n", com->conn);
conns[i] = netconn_new(NETCONN_UDPNOCHKSUM);
if(conns[i] == NULL) {
sendstr("Could not create connection identifier (out of memory).\n", com->conn);
return ESUCCESS;
}
err = netconn_connect(conns[i], &ipaddr, rport);
if(err != ERR_OK) {
netconn_delete(conns[i]);
conns[i] = NULL;
sendstr("Could not connect to remote host: ", com->conn);
#ifdef LWIP_DEBUG
sendstr(lwip_strerr(err), com->conn);
#else
sendstr("(debugging must be turned on for error message to appear)", com->conn);
#endif /* LWIP_DEBUG */
sendstr("\n", com->conn);
return ESUCCESS;
}
err = netconn_bind(conns[i], IP_ADDR_ANY, lport);
if(err != ERR_OK) {
netconn_delete(conns[i]);
conns[i] = NULL;
sendstr("Could not bind: ", com->conn);
#ifdef LWIP_DEBUG
sendstr(lwip_strerr(err), com->conn);
#else
sendstr("(debugging must be turned on for error message to appear)", com->conn);
#endif /* LWIP_DEBUG */
sendstr("\n", com->conn);
return ESUCCESS;
}
sendstr("Connection set up, connection identifier is ", com->conn);
sprintf((char *)buffer, "%d\n", i);
netconn_write(com->conn, buffer, strlen((const char *)buffer), NETCONN_COPY);
return ESUCCESS;
}
/*-----------------------------------------------------------------------------------*/
static s8_t
com_udpb(struct command *com)
{
struct ip_addr ipaddr;
u16_t lport, rport;
int i;
err_t err;
struct ip_addr bcaddr;
lport = strtol(com->args[0], NULL, 10);
if(inet_aton(com->args[1], (struct in_addr *)&ipaddr) == -1) {
sendstr(strerror(errno), com->conn);
return ESYNTAX;
}
rport = strtol(com->args[2], NULL, 10);
/* Find the first unused connection in conns. */
for(i = 0; i < NCONNS && conns[i] != NULL; i++);
if(i == NCONNS) {
sendstr("No more connections avaliable, sorry.\n", com->conn);
return ESUCCESS;
}
sendstr("Setting up UDP broadcast connection from port ", com->conn);
netconn_write(com->conn, com->args[0], strlen(com->args[0]), NETCONN_COPY);
sendstr(" to ", com->conn);
netconn_write(com->conn, com->args[1], strlen(com->args[1]), NETCONN_COPY);
sendstr("\n", com->conn);
conns[i] = netconn_new(NETCONN_UDP);
if(conns[i] == NULL) {
sendstr("Could not create connection identifier (out of memory).\n", com->conn);
return ESUCCESS;
}
err = netconn_connect(conns[i], &ipaddr, rport);
if(err != ERR_OK) {
netconn_delete(conns[i]);
conns[i] = NULL;
sendstr("Could not connect to remote host: ", com->conn);
#ifdef LWIP_DEBUG
sendstr(lwip_strerr(err), com->conn);
#else
sendstr("(debugging must be turned on for error message to appear)", com->conn);
#endif /* LWIP_DEBUG */
sendstr("\n", com->conn);
return ESUCCESS;
}
IP4_ADDR(&bcaddr, 255,255,255,255);
err = netconn_bind(conns[i], &bcaddr, lport);
if(err != ERR_OK) {
netconn_delete(conns[i]);
conns[i] = NULL;
sendstr("Could not bind: ", com->conn);
#ifdef LWIP_DEBUG
sendstr(lwip_strerr(err), com->conn);
#else
sendstr("(debugging must be turned on for error message to appear)", com->conn);
#endif /* LWIP_DEBUG */
sendstr("\n", com->conn);
return ESUCCESS;
}
sendstr("Connection set up, connection identifier is ", com->conn);
sprintf((char *)buffer, "%d\n", i);
netconn_write(com->conn, buffer, strlen((const char *)buffer), NETCONN_COPY);
return ESUCCESS;
}
/*-----------------------------------------------------------------------------------*/
static s8_t
com_usnd(struct command *com)
{
int i;
err_t err;
struct netbuf *buf;
char *mem;
i = strtol(com->args[0], NULL, 10);
if(i > NCONNS) {
sendstr("Connection identifier too high.\n", com->conn);
return ESUCCESS;
}
if(conns[i] == NULL) {
sendstr("Connection identifier not in use.\n", com->conn);
return ESUCCESS;
}
buf = netbuf_new();
mem = netbuf_alloc(buf, strlen(com->args[1]) + 1);
if(mem == NULL) {
sendstr("Could not allocate memory for sending.\n", com->conn);
return ESUCCESS;
}
strncpy(mem, com->args[1], strlen(com->args[1]) + 1);
err = netconn_send(conns[i], buf);
netbuf_delete(buf);
if(err != ERR_OK) {
sendstr("Could not send data: ", com->conn);
#ifdef LWIP_DEBUG
sendstr(lwip_strerr(err), com->conn);
#else
sendstr("(debugging must be turned on for error message to appear)", com->conn);
#endif /* LWIP_DEBUG */
sendstr("\n", com->conn);
return ESUCCESS;
}
sendstr("Data sent.\n", com->conn);
return ESUCCESS;
}
/*-----------------------------------------------------------------------------------*/
static s8_t
com_help(struct command *com)
{
sendstr(help_msg, com->conn);
return ESUCCESS;
}
/*-----------------------------------------------------------------------------------*/
static s8_t
parse_command(struct command *com, u32_t len)
{
u16_t i;
u16_t bufp;
if(strncmp((const char *)buffer, "open", 4) == 0) {
com->exec = com_open;
com->nargs = 2;
} else if(strncmp((const char *)buffer, "lstn", 4) == 0) {
com->exec = com_lstn;
com->nargs = 1;
} else if(strncmp((const char *)buffer, "acpt", 4) == 0) {
com->exec = com_acpt;
com->nargs = 1;
} else if(strncmp((const char *)buffer, "clos", 4) == 0) {
com->exec = com_clos;
com->nargs = 1;
} else if(strncmp((const char *)buffer, "stat", 4) == 0) {
com->exec = com_stat;
com->nargs = 0;
} else if(strncmp((const char *)buffer, "send", 4) == 0) {
com->exec = com_send;
com->nargs = 2;
} else if(strncmp((const char *)buffer, "recv", 4) == 0) {
com->exec = com_recv;
com->nargs = 1;
} else if(strncmp((const char *)buffer, "udpc", 4) == 0) {
com->exec = com_udpc;
com->nargs = 3;
} else if(strncmp((const char *)buffer, "udpb", 4) == 0) {
com->exec = com_udpb;
com->nargs = 2;
} else if(strncmp((const char *)buffer, "udpl", 4) == 0) {
com->exec = com_udpl;
com->nargs = 3;
} else if(strncmp((const char *)buffer, "udpn", 4) == 0) {
com->exec = com_udpn;
com->nargs = 3;
} else if(strncmp((const char *)buffer, "usnd", 4) == 0) {
com->exec = com_usnd;
com->nargs = 2;
} else if(strncmp((const char *)buffer, "help", 4) == 0) {
com->exec = com_help;
com->nargs = 0;
} else if(strncmp((const char *)buffer, "quit", 4) == 0) {
printf("quit\n");
return ECLOSED;
} else {
return ESYNTAX;
}
if(com->nargs == 0) {
return ESUCCESS;
}
bufp = 0;
for(; bufp < len && buffer[bufp] != ' '; bufp++);
for(i = 0; i < 10; i++) {
for(; bufp < len && buffer[bufp] == ' '; bufp++);
if(buffer[bufp] == '\r' ||
buffer[bufp] == '\n') {
buffer[bufp] = 0;
if(i < com->nargs - 1) {
return ETOOFEW;
}
if(i > com->nargs - 1) {
return ETOOMANY;
}
break;
}
if(bufp > len) {
return ETOOFEW;
}
com->args[i] = (char *)&buffer[bufp];
for(; bufp < len && buffer[bufp] != ' ' && buffer[bufp] != '\r' &&
buffer[bufp] != '\n'; bufp++) {
if(buffer[bufp] == '\\') {
buffer[bufp] = ' ';
}
}
if(bufp > len) {
return ESYNTAX;
}
buffer[bufp] = 0;
bufp++;
if(i == com->nargs - 1) {
break;
}
}
return ESUCCESS;
}
/*-----------------------------------------------------------------------------------*/
static void
error(s8_t err, struct netconn *conn)
{
switch(err) {
case ESYNTAX:
sendstr("## Syntax error\n", conn);
break;
case ETOOFEW:
sendstr("## Too few arguments to command given\n", conn);
break;
case ETOOMANY:
sendstr("## Too many arguments to command given\n", conn);
break;
}
}
/*-----------------------------------------------------------------------------------*/
static void
prompt(struct netconn *conn)
{
sendstr("> ", conn);
}
/*-----------------------------------------------------------------------------------*/
static void
shell_main(struct netconn *conn)
{
struct netbuf *buf;
u32_t len;
struct command com;
s8_t err;
int i;
do {
buf = netconn_recv(conn);
if(buf != NULL) {
netbuf_copy(buf, buffer, 1024);
len = netbuf_len(buf);
netbuf_delete(buf);
if(len >= 4) {
if(buffer[0] != 0xff &&
buffer[1] != 0xfe) {
err = parse_command(&com, len);
if(err == ESUCCESS) {
com.conn = conn;
err = com.exec(&com);
}
if(err != ESUCCESS) {
error(err, conn);
}
if(err == ECLOSED) {
printf("Closed\n");
error(err, conn);
goto close;
}
} else {
sendstr("\n\n"
"lwIP simple interactive shell.\n"
"(c) Copyright 2001, Swedish Institute of Computer Science.\n"
"Written by Adam Dunkels.\n"
"For help, try the \"help\" command.\n", conn);
}
}
}
if(buf != NULL) {
prompt(conn);
}
} while(buf != NULL);
printf("buf == NULL err %s\n", lwip_strerr(conn->err));
close:
netconn_close(conn);
for(i = 0; i < NCONNS; i++) {
if(conns[i] != NULL) {
netconn_delete(conns[i]);
}
conns[i] = NULL;
}
}
/*-----------------------------------------------------------------------------------*/
static void
shell_thread(void *arg)
{
struct netconn *conn, *newconn;
conn = netconn_new(NETCONN_TCP);
netconn_bind(conn, NULL, 23);
netconn_listen(conn);
while(1) {
newconn = netconn_accept(conn);
shell_main(newconn);
netconn_delete(newconn);
}
}
/*-----------------------------------------------------------------------------------*/
void
shell_init(void)
{
sys_thread_new(shell_thread, NULL);
}
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