504 lines
12 KiB
C
504 lines
12 KiB
C
/*
|
|
* Copyright (c) 2004, Adam Dunkels.
|
|
* 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. Neither the name of the Institute nor the names of its contributors
|
|
* may be used to endorse or promote products derived from this software
|
|
* without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``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 INSTITUTE OR CONTRIBUTORS 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 Contiki operating system.
|
|
*
|
|
* Author: Adam Dunkels <adam@sics.se>
|
|
*
|
|
* $Id: ftpc.c,v 1.4 2010/05/31 15:22:08 nifi Exp $
|
|
*/
|
|
#include "contiki.h"
|
|
#include "ftpc.h"
|
|
|
|
#include <string.h>
|
|
#include <stdio.h>
|
|
|
|
#define ISO_nl 0x0a
|
|
#define ISO_cr 0x0d
|
|
|
|
#define DATAPORT 6510
|
|
|
|
#define MAX_FILENAMELEN 32
|
|
|
|
struct ftp_dataconn {
|
|
unsigned char type;
|
|
unsigned char conntype;
|
|
#define CONNTYPE_LIST 0
|
|
#define CONNTYPE_FILE 1
|
|
|
|
u16_t port;
|
|
|
|
unsigned char filenameptr;
|
|
char filename[MAX_FILENAMELEN];
|
|
|
|
|
|
};
|
|
|
|
struct ftp_connection {
|
|
unsigned char type;
|
|
#define TYPE_CONTROL 1
|
|
#define TYPE_DATA 2
|
|
#define TYPE_ABORT 3
|
|
#define TYPE_CLOSE 4
|
|
|
|
unsigned char state;
|
|
#define STATE_NONE 0
|
|
#define STATE_INITIAL 1
|
|
#define STATE_SEND_USER 2
|
|
#define STATE_USER_SENT 3
|
|
#define STATE_SEND_PASS 4
|
|
#define STATE_PASS_SENT 5
|
|
#define STATE_SEND_PORT 6
|
|
#define STATE_PORT_SENT 7
|
|
#define STATE_SEND_OPTIONS 8
|
|
#define STATE_OPTION_SENT 9
|
|
#define STATE_CONNECTED 10
|
|
#define STATE_SEND_NLST 11
|
|
#define STATE_NLST_SENT 12
|
|
#define STATE_SEND_RETR 13
|
|
#define STATE_RETR_SENT 14
|
|
|
|
#define STATE_SEND_CWD 15
|
|
#define STATE_CWD_SENT 16
|
|
|
|
#define STATE_SEND_CDUP 17
|
|
#define STATE_CDUP_SENT 18
|
|
|
|
#define STATE_SEND_QUIT 19
|
|
#define STATE_QUIT_SENT 20
|
|
|
|
unsigned char connected_confirmed;
|
|
|
|
struct ftp_dataconn dataconn;
|
|
|
|
char code[3];
|
|
unsigned char codeptr;
|
|
|
|
unsigned char optionsptr;
|
|
|
|
char filename[MAX_FILENAMELEN];
|
|
|
|
};
|
|
|
|
#define NUM_OPTIONS 1
|
|
static const struct {
|
|
unsigned char num;
|
|
char *commands[NUM_OPTIONS];
|
|
} options = {
|
|
NUM_OPTIONS,
|
|
{"TYPE I\r\n"}
|
|
};
|
|
|
|
static struct ftp_connection *waiting_for_dataconn;
|
|
|
|
MEMB(connections, struct ftp_connection, 1);
|
|
|
|
/*---------------------------------------------------------------------------*/
|
|
void
|
|
ftpc_init(void)
|
|
{
|
|
memb_init(&connections);
|
|
/* tcp_listen(HTONS(DATAPORT));*/
|
|
}
|
|
/*---------------------------------------------------------------------------*/
|
|
void *
|
|
ftpc_connect(uip_ipaddr_t *ipaddr, u16_t port)
|
|
{
|
|
struct ftp_connection *c;
|
|
|
|
c = (struct ftp_connection *)memb_alloc(&connections);
|
|
if(c == NULL) {
|
|
return NULL;
|
|
}
|
|
c->type = TYPE_CONTROL;
|
|
c->state = STATE_INITIAL;
|
|
c->connected_confirmed = 0;
|
|
c->codeptr = 0;
|
|
c->dataconn.type = TYPE_DATA;
|
|
c->dataconn.port = DATAPORT;
|
|
tcp_listen(HTONS(DATAPORT));
|
|
|
|
if(tcp_connect(ipaddr, port, c) == NULL) {
|
|
memb_free(&connections, c);
|
|
return NULL;
|
|
}
|
|
|
|
return c;
|
|
}
|
|
/*---------------------------------------------------------------------------*/
|
|
static void
|
|
handle_input(struct ftp_connection *c)
|
|
{
|
|
int code;
|
|
|
|
code = (c->code[0] - '0') * 100 +
|
|
(c->code[1] - '0') * 10 +
|
|
(c->code[2] - '0');
|
|
/* printf("Handle input code %d state %d\n", code, c->state);*/
|
|
|
|
if(c->state == STATE_INITIAL) {
|
|
if(code == 220) {
|
|
c->state = STATE_SEND_USER;
|
|
}
|
|
} else if(c->state == STATE_USER_SENT) {
|
|
if(code == 331) {
|
|
c->state = STATE_SEND_PASS;
|
|
}
|
|
} else if(c->state == STATE_PASS_SENT) {
|
|
if(code == 230) {
|
|
c->state = STATE_SEND_OPTIONS;
|
|
c->optionsptr = 0;
|
|
}
|
|
} else if(c->state == STATE_PORT_SENT) {
|
|
c->state = STATE_CONNECTED;
|
|
if(c->connected_confirmed == 0) {
|
|
ftpc_connected(c);
|
|
c->connected_confirmed = 1;
|
|
}
|
|
} else if(c->state == STATE_OPTION_SENT) {
|
|
if(c->optionsptr >= options.num) {
|
|
c->state = STATE_SEND_PORT;
|
|
} else {
|
|
c->state = STATE_SEND_OPTIONS;
|
|
}
|
|
} else if((c->state == STATE_NLST_SENT ||
|
|
c->state == STATE_RETR_SENT ||
|
|
c->state == STATE_CONNECTED)) {
|
|
if(code == 226 || code == 550) {
|
|
tcp_unlisten(htons(c->dataconn.port));
|
|
++c->dataconn.port;
|
|
tcp_listen(htons(c->dataconn.port));
|
|
c->state = STATE_SEND_PORT;
|
|
}
|
|
|
|
if(code == 550) {
|
|
ftpc_list_file(NULL);
|
|
}
|
|
} else if(c->state == STATE_CWD_SENT ||
|
|
c->state == STATE_CDUP_SENT) {
|
|
c->state = STATE_CONNECTED;
|
|
ftpc_cwd_done(code);
|
|
/* } else if(c->state == STATE_) {
|
|
c->state = STATE_CONNECTED;*/
|
|
}
|
|
}
|
|
/*---------------------------------------------------------------------------*/
|
|
static void
|
|
newdata(struct ftp_connection *c)
|
|
{
|
|
u16_t i;
|
|
u8_t d;
|
|
|
|
for(i = 0; i < uip_datalen(); ++i) {
|
|
d = ((char *)uip_appdata)[i];
|
|
if(c->codeptr < sizeof(c->code)) {
|
|
c->code[c->codeptr] = d;
|
|
++c->codeptr;
|
|
}
|
|
|
|
if(d == ISO_nl) {
|
|
handle_input(c);
|
|
c->codeptr = 0;
|
|
}
|
|
}
|
|
}
|
|
/*---------------------------------------------------------------------------*/
|
|
static void
|
|
acked(struct ftp_connection *c)
|
|
{
|
|
switch(c->state) {
|
|
case STATE_SEND_USER:
|
|
c->state = STATE_USER_SENT;
|
|
break;
|
|
case STATE_SEND_PASS:
|
|
c->state = STATE_PASS_SENT;
|
|
break;
|
|
case STATE_SEND_PORT:
|
|
c->state = STATE_PORT_SENT;
|
|
break;
|
|
case STATE_SEND_OPTIONS:
|
|
++c->optionsptr;
|
|
c->state = STATE_OPTION_SENT;
|
|
break;
|
|
case STATE_SEND_NLST:
|
|
c->state = STATE_NLST_SENT;
|
|
break;
|
|
case STATE_SEND_RETR:
|
|
c->state = STATE_RETR_SENT;
|
|
break;
|
|
case STATE_SEND_CWD:
|
|
c->state = STATE_CWD_SENT;
|
|
break;
|
|
case STATE_SEND_CDUP:
|
|
c->state = STATE_CDUP_SENT;
|
|
break;
|
|
case STATE_SEND_QUIT:
|
|
c->state = STATE_QUIT_SENT;
|
|
uip_close();
|
|
break;
|
|
}
|
|
}
|
|
/*---------------------------------------------------------------------------*/
|
|
static void
|
|
senddata(struct ftp_connection *c)
|
|
{
|
|
u16_t len;
|
|
|
|
switch(c->state) {
|
|
case STATE_SEND_USER:
|
|
strcpy(uip_appdata, "USER ");
|
|
strncpy((char *)uip_appdata + 5, ftpc_username(), uip_mss() - 7);
|
|
len = (u16_t)strlen(ftpc_username());
|
|
strcpy((char *)uip_appdata + 5 + len, "\r\n");
|
|
uip_send(uip_appdata, len + 2 + 5);
|
|
break;
|
|
case STATE_SEND_PASS:
|
|
strcpy(uip_appdata, "PASS ");
|
|
strncpy((char *)uip_appdata + 5, ftpc_password(), uip_mss() - 7);
|
|
len = (u16_t)strlen(ftpc_password());
|
|
strcpy((char *)uip_appdata + 5 + len, "\r\n");
|
|
uip_send(uip_appdata, len + 2 + 5);
|
|
break;
|
|
case STATE_SEND_PORT:
|
|
len = sprintf(uip_appdata, "PORT %d,%d,%d,%d,%d,%d\n",
|
|
uip_ipaddr_to_quad(&uip_hostaddr),
|
|
(c->dataconn.port) >> 8,
|
|
(c->dataconn.port) & 0xff);
|
|
uip_send(uip_appdata, len);
|
|
break;
|
|
case STATE_SEND_OPTIONS:
|
|
len = (u16_t)strlen(options.commands[c->optionsptr]);
|
|
uip_send(options.commands[c->optionsptr], len);
|
|
break;
|
|
case STATE_SEND_NLST:
|
|
uip_send("NLST\r\n", 6);
|
|
break;
|
|
case STATE_SEND_RETR:
|
|
len = sprintf(uip_appdata, "RETR %s\r\n", c->filename);
|
|
uip_send(uip_appdata, len);
|
|
break;
|
|
case STATE_SEND_CWD:
|
|
len = sprintf(uip_appdata, "CWD %s\r\n", c->filename);
|
|
uip_send(uip_appdata, len);
|
|
break;
|
|
case STATE_SEND_CDUP:
|
|
uip_send("CDUP\r\n", 6);
|
|
break;
|
|
case STATE_SEND_QUIT:
|
|
uip_send("QUIT\r\n", 6);
|
|
break;
|
|
}
|
|
}
|
|
/*---------------------------------------------------------------------------*/
|
|
void
|
|
ftpc_appcall(void *state)
|
|
{
|
|
int i, t;
|
|
struct ftp_connection *c = (struct ftp_connection *)state;
|
|
struct ftp_dataconn *d = (struct ftp_dataconn *)state;
|
|
|
|
if(uip_connected()) {
|
|
if(state == NULL) {
|
|
if(waiting_for_dataconn != NULL) {
|
|
d = &waiting_for_dataconn->dataconn;
|
|
waiting_for_dataconn = NULL;
|
|
tcp_markconn(uip_conn, d);
|
|
d->filenameptr = 0;
|
|
|
|
} else {
|
|
uip_abort();
|
|
}
|
|
} else {
|
|
/* tcp_listen(uip_conn->lport);*/
|
|
senddata(c);
|
|
}
|
|
return;
|
|
}
|
|
|
|
if(c->type == TYPE_ABORT) {
|
|
uip_abort();
|
|
return;
|
|
}
|
|
|
|
if(c->type == TYPE_CLOSE) {
|
|
uip_close();
|
|
c->type = TYPE_CONTROL;
|
|
return;
|
|
}
|
|
|
|
if(c->type == TYPE_CONTROL) {
|
|
if(uip_closed()) {
|
|
c->dataconn.type = TYPE_ABORT;
|
|
ftpc_closed();
|
|
memb_free(&connections, c);
|
|
}
|
|
if(uip_aborted()) {
|
|
c->dataconn.type = TYPE_ABORT;
|
|
ftpc_aborted();
|
|
memb_free(&connections, c);
|
|
}
|
|
if(uip_timedout()) {
|
|
c->dataconn.type = TYPE_ABORT;
|
|
ftpc_timedout();
|
|
memb_free(&connections, c);
|
|
}
|
|
|
|
|
|
if(uip_acked()) {
|
|
acked(c);
|
|
}
|
|
if(uip_newdata()) {
|
|
newdata(c);
|
|
}
|
|
if(uip_rexmit() ||
|
|
uip_newdata() ||
|
|
uip_acked()) {
|
|
senddata(c);
|
|
} else if(uip_poll()) {
|
|
senddata(c);
|
|
}
|
|
} else {
|
|
if(d->conntype == CONNTYPE_LIST) {
|
|
if(uip_newdata()) {
|
|
for(i = 0; i < uip_datalen(); ++i) {
|
|
t = ((char *)uip_appdata)[i];
|
|
|
|
if(d->filenameptr < sizeof(d->filename) - 1 &&
|
|
t != ISO_cr &&
|
|
t != ISO_nl) {
|
|
d->filename[d->filenameptr] = t;
|
|
++d->filenameptr;
|
|
}
|
|
|
|
if(t == ISO_nl) {
|
|
d->filename[d->filenameptr] = 0;
|
|
ftpc_list_file(d->filename);
|
|
d->filenameptr = 0;
|
|
}
|
|
|
|
}
|
|
}
|
|
if(uip_closed()) {
|
|
ftpc_list_file(NULL);
|
|
}
|
|
} else {
|
|
if(uip_newdata()) {
|
|
ftpc_data(uip_appdata, uip_datalen());
|
|
/* printf("Received %d data bytes: '%s'\n",
|
|
uip_datalen(), uip_appdata);*/
|
|
} else if(uip_closed() || uip_timedout() || uip_aborted()) {
|
|
ftpc_data(NULL, 0);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
/*---------------------------------------------------------------------------*/
|
|
char
|
|
ftpc_list(void *conn)
|
|
{
|
|
struct ftp_connection *c;
|
|
|
|
c = conn;
|
|
|
|
if(c == NULL ||
|
|
c->state != STATE_CONNECTED) {
|
|
return 0;
|
|
}
|
|
|
|
c->state = STATE_SEND_NLST;
|
|
c->dataconn.conntype = CONNTYPE_LIST;
|
|
waiting_for_dataconn = c;
|
|
return 1;
|
|
}
|
|
/*---------------------------------------------------------------------------*/
|
|
char
|
|
ftpc_get(void *conn, char *filename)
|
|
{
|
|
struct ftp_connection *c;
|
|
|
|
c = conn;
|
|
|
|
if(c == NULL ||
|
|
c->state != STATE_CONNECTED) {
|
|
return 0;
|
|
}
|
|
|
|
strncpy(c->filename, filename, sizeof(c->filename));
|
|
|
|
c->state = STATE_SEND_RETR;
|
|
c->dataconn.conntype = CONNTYPE_FILE;
|
|
waiting_for_dataconn = c;
|
|
return 1;
|
|
}
|
|
/*---------------------------------------------------------------------------*/
|
|
void
|
|
ftpc_close(void *conn)
|
|
{
|
|
struct ftp_connection *c;
|
|
|
|
c = conn;
|
|
|
|
if(c == NULL) {
|
|
return;
|
|
}
|
|
|
|
c->type = TYPE_CLOSE;
|
|
}
|
|
/*---------------------------------------------------------------------------*/
|
|
void
|
|
ftpc_cwd(void *conn, char *dirname)
|
|
{
|
|
struct ftp_connection *c;
|
|
|
|
c = conn;
|
|
|
|
if(c == NULL ||
|
|
c->state != STATE_CONNECTED) {
|
|
return;
|
|
}
|
|
|
|
strncpy(c->filename, dirname, sizeof(c->filename));
|
|
c->state = STATE_SEND_CWD;
|
|
}
|
|
/*---------------------------------------------------------------------------*/
|
|
void
|
|
ftpc_cdup(void *conn)
|
|
{
|
|
struct ftp_connection *c;
|
|
|
|
c = conn;
|
|
|
|
if(c == NULL ||
|
|
c->state != STATE_CONNECTED) {
|
|
return;
|
|
}
|
|
|
|
c->state = STATE_SEND_CDUP;
|
|
}
|
|
/*---------------------------------------------------------------------------*/
|