sergiotarxz/nuttx-apps
sergiotarxz/nuttx-apps
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

apps/examples/cc3000: Extensions and enhancements from David Sidrane

Browse Source
This commit is contained in:
Gregory Nutt 2013-10-23 08:25:40 -06:00
parent a976360e0d
commit dec3293e02
9 changed files with 1520 additions and 199 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
ChangeLog.txt
View File

@ -688,3 +688,6 @@
of CC3000 logic by David Sidrane (2013-10-16).
* apps/examples/random: Add a simple test that dumps values from
/dev/random (2013-10-20).
* apps/examples/cc3000: Extensions and enhancements from David
Sidrane (2013-10-23).

15
examples/cc3000/Makefile
View File

@ -1,5 +1,5 @@
############################################################################
# apps/examples/hello/Makefile
# apps/examples/cc3000/Makefile
#
# Copyright (C) 2008, 2010-2013 Gregory Nutt. All rights reserved.
# Author: Gregory Nutt <gnutt@nuttx.org>
@ -41,12 +41,16 @@ include $(APPDIR)/Make.defs
APPNAME = c3b
PRIORITY = SCHED_PRIORITY_DEFAULT
STACKSIZE = 4096
STACKSIZE = 2048
APPNAME1 = shell
PRIORITY1 = SCHED_PRIORITY_DEFAULT
STACKSIZE1 = 2048
# Hello, World! Example
ASRCS =
CSRCS = cc3000basic.c board.c
CSRCS = cc3000basic.c board.c shell.c telnetd_driver.c
AOBJS = $(ASRCS:.S=$(OBJEXT))
COBJS = $(CSRCS:.c=$(OBJEXT))
@ -68,7 +72,7 @@ ROOTDEPPATH = --dep-path .
# Common build
VPATH =
VPATH =
all: .built
.PHONY: clean depend distclean
@ -86,8 +90,9 @@ $(COBJS): %$(OBJEXT): %.c
ifeq ($(CONFIG_NSH_BUILTIN_APPS),y)
$(BUILTIN_REGISTRY)$(DELIM)$(APPNAME)_main.bdat: $(DEPCONFIG) Makefile
$(call REGISTER,$(APPNAME),$(PRIORITY),$(STACKSIZE),$(APPNAME)_main)
$(call REGISTER,$(APPNAME1),$(PRIORITY1),$(STACKSIZE1),$(APPNAME1)_main)
context: $(BUILTIN_REGISTRY)$(DELIM)$(APPNAME)_main.bdat
context: $(BUILTIN_REGISTRY)$(DELIM)$(APPNAME)_main.bdat $(BUILTIN_REGISTRY)$(DELIM)$(APPNAME)_main.bdat
else
context:
endif

466
examples/cc3000/cc3000basic.c
View File

@ -6,6 +6,10 @@
* Version 1.0.1b
*
* Copyright (C) 2013 Chris Magagna - cmagagna@yahoo.com
* Port to nuttx:
* Alan Carvalho de Assis <acassis@gmail.com>
* David Sidrane <david_s5@nscdg.com>
*
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
@ -81,6 +85,7 @@ Arduino pin -----> 560 Ohm --+--> 1K Ohm -----> GND
****************************************************************************/
#include <nuttx/config.h>
#include "board.h"
#include <stdio.h>
#include <string.h>
@ -88,16 +93,18 @@ Arduino pin -----> 560 Ohm --+--> 1K Ohm -----> GND
#include <stdlib.h>
#include <stdbool.h>
#include <sys/time.h>
#include <arpa/inet.h>
#include <nuttx/wireless/cc3000/nvmem.h>
#include <nuttx/wireless/cc3000/include/sys/socket.h>
#include <nuttx/wireless/cc3000/wlan.h>
#include <nuttx/wireless/cc3000/hci.h>
#include <nuttx/wireless/cc3000/security.h>
#include <nuttx/wireless/cc3000/netapp.h>
#include "shell.h"
void Initialize(void);
void helpme(void);
void execute(int cmd);
int execute(int cmd);
void ShowBufferSize(void);
void ShowFreeRAM(void);
void Blinker(void);
@ -112,11 +119,56 @@ void ShowInformation(void);
// function Blinker() flashes this LED. It's not required for actual use.
#define BLINKER_LED 6
#define MS_PER_SEC 1000
#define US_PER_MS 1000
#define US_PER_SEC 1000000
uint8_t isInitialized = false;
bool wait(long timeoutMs, volatile unsigned long *what, volatile unsigned long is)
{
long t_ms;
struct timeval end, start;
gettimeofday(&start, NULL);
while (*what != is)
{
Blinker();
usleep(10*US_PER_MS);
gettimeofday(&end, NULL);
t_ms = ((end.tv_sec - start.tv_sec) * MS_PER_SEC) + ((end.tv_usec - start.tv_usec) / US_PER_MS) ;
if (t_ms > timeoutMs)
{
return false;
}
}
return true;
}
bool wait_on(long timeoutMs, volatile unsigned long *what, volatile unsigned long is,char * msg)
{
printf(msg);
printf("...");
fflush(stdout);
bool ret = wait(timeoutMs,what,is);
if (!ret)
{
printf(" FAILED:Timeout!\n");
}
else
{
printf(" Succeed\n");
}
fflush(stdout);
return ret;
}
void AsyncEventPrint(void)
{
printf("\n");
switch(lastAsyncEvent)
{
printf("CC3000 Async event: Simple config done\n");
@ -161,26 +213,29 @@ void AsyncEventPrint(void)
void helpme(void)
{
printf("\n+-------------------------------------------+\n");
printf("| Arduino CC3000 Demo Program |\n");
printf("| Nuttx CC3000 Demo Program |\n");
printf("+-------------------------------------------+\n\n");
printf(" 1 - Initialize the CC3000\n");
printf(" 2 - Show RX & TX buffer sizes, & free RAM\n");
printf(" 3 - Start Smart Config\n");
printf(" 4 - Manually connect to AP\n");
printf(" 5 - Manually add connection profile\n");
printf(" 6 - List access points\n");
printf(" 7 - Show CC3000 information\n");
printf("\n Type 1-7 to select above option or (q/Q) to quit: ");
printf(" 01 - Initialize the CC3000\n");
printf(" 02 - Show RX & TX buffer sizes, & free RAM\n");
printf(" 03 - Start Smart Config\n");
printf(" 04 - Manually connect to AP\n");
printf(" 05 - Manually add connection profile\n");
printf(" 06 - List access points\n");
printf(" 07 - Show CC3000 information\n");
printf(" 08 - Telnet\n");
printf("\n Type 01-07 to select above option: ");
}
void execute(int cmd)
int execute(int cmd)
{
int ret = 0;
if (asyncNotificationWaiting)
{
asyncNotificationWaiting = false;
AsyncEventPrint();
}
printf("\n");
switch(cmd)
{
case '1':
@ -205,17 +260,24 @@ void execute(int cmd)
case '7':
ShowInformation();
break;
case '8':
shell_main(0, 0);
break;
case 'q':
case 'Q':
ret = 1;
break;
default:
printf("**Unknown command \"%d\" **\n", cmd);
break;
}
return;
return ret;
}
void Initialize(void)
{
uint8_t fancyBuffer[MAC_ADDR_LEN], i = 0;
uint8_t fancyBuffer[MAC_ADDR_LEN];
if (isInitialized)
{
@ -285,7 +347,6 @@ void Blinker(void)
{
}
/*
Smart Config is TI's way to let you connect your device to your WiFi network
without needing a keyboard and display to enter the network name, password,
@ -312,74 +373,77 @@ char simpleConfigPrefix[] = {'T', 'T', 'T'};
// that name into their phone or tablet when they run Smart Config.
char device_name[] = "CC3000";
void StartSmartConfig(void) {
void StartSmartConfig(void)
{
long rval;
double t_us;
struct timeval end, start;
if (!isInitialized) {
printf("CC3000 not initialized; can't run Smart Config.\n");
return;
}
if (!isInitialized)
{
printf("CC3000 not initialized; can't run Smart Config.\n");
return;
}
printf("Starting Smart Config...\n");
printf("Starting Smart Config\n");
printf(" Disabling auto-connect policy...\n");
if ((rval = wlan_ioctl_set_connection_policy(DISABLE, DISABLE, DISABLE))!=0) {
printf(" Setting auto connection policy failed, error: %X\n", rval);
return;
}
printf(" Disabling auto-connect policy...");
if ((rval = wlan_ioctl_set_connection_policy(DISABLE, DISABLE, DISABLE)) !=0 )
{
printf(" Failed!\n Setting auto connection policy failed, error: %X\n", rval);
return;
}
printf(" Deleting all existing profiles...\n");
if ((rval = wlan_ioctl_del_profile(255))!=0) {
printf(" Deleting all profiles failed, error: %X\n", rval);
return;
}
printf(" Succeed\n");
printf(" Deleting all existing profiles...");
fflush(stdout);
printf(" Waiting until disconnected...\n");
while (ulCC3000Connected == 1) {
Blinker();
}
if ((rval = wlan_ioctl_del_profile(255)) !=0 )
{
printf(" Failed!\n Deleting all profiles failed, error: %X\n", rval);
return;
}
printf(" Setting smart config prefix...\n");
if ((rval = wlan_smart_config_set_prefix(simpleConfigPrefix))!=0) {
printf(" Setting smart config prefix failed, error: %X", rval);
return;
}
printf(" Succeed\n");
wait_on(20*MS_PER_SEC, &ulCC3000Connected, 0, " Waiting until disconnected");
printf(" Setting smart config prefix...");
fflush(stdout);
if ((rval = wlan_smart_config_set_prefix(simpleConfigPrefix)) !=0 )
{
printf(" Failed!\n Setting smart config prefix failed, error: %X", rval);
return;
}
printf(" Succeed\n");
printf(" Starting smart config...");
if ((rval = wlan_smart_config_start(0))!=0) {
printf(" Starting smart config failed, error: %X\n", rval);
return;
}
fflush(stdout);
// Wait for Smartconfig process complete, or 30 seconds, whichever
// comes first. The Uno isn't seeing the HCI_EVNT_WLAN_ASYNC_SIMPLE_CONFIG_DONE
// event and I can't figure out why (it works fine on the Teensy) so my
// temporary workaround is I just stop waiting after a while
gettimeofday(&start, NULL);
while (ulSmartConfigFinished == 0)
{
Blinker();
gettimeofday(&end, NULL);
t_us = ((end.tv_sec - start.tv_sec) * 1000*1000) + (end.tv_usec - start.tv_usec) ;
if (t_us > 3000000) //3s
if ((rval = wlan_smart_config_start(0)) !=0 )
{
printf(" Failed!\n Starting smart config failed, error: %X\n", rval);
return;
}
printf(" Succeed\n");
if (!wait_on(30*MS_PER_SEC, &ulSmartConfigFinished, 1, " Waiting on Starting smart config done"))
{
printf(" Timed out waiting for Smart Config to finish. Hopefully it did anyway\n");
break;
}
}
printf(" Smart Config packet seen!\n");
printf(" Smart Config packet %s!\n",ulSmartConfigFinished ? "seen" : "NOT seen");
printf(" Enabling auto-connect policy...\n");
if ((rval=wlan_ioctl_set_connection_policy(DISABLE, DISABLE, ENABLE))!=0)
{
printf(" Setting auto connection policy failed, error: %X\n", rval);
return;
}
printf(" Enabling auto-connect policy...");
fflush(stdout);
if ((rval=wlan_ioctl_set_connection_policy(DISABLE, DISABLE, ENABLE)) !=0 )
{
printf(" Failed!\n Setting auto connection policy failed, error: %X\n", rval);
return;
}
printf(" Succeed\n");
printf(" Stopping CC3000...\n");
fflush(stdout);
wlan_stop(); // no error returned here, so nothing to check
printf(" Pausing for 2 seconds...\n");
@ -388,27 +452,29 @@ void StartSmartConfig(void) {
printf(" Restarting CC3000... \n");
wlan_start(0); // no error returned here, so nothing to check
printf(" Waiting for connection to AP...\n");
while (ulCC3000Connected!=1)
{
Blinker();
}
if (!wait_on(20*MS_PER_SEC, &ulCC3000Connected, 1, " Waiting for connection to AP"))
{
printf(" Timed out waiting for connection to AP\n");
return;
}
printf(" Waiting for IP address from DHCP...\n");
while (ulCC3000DHCP!=1)
{
Blinker();
}
if (!wait_on(15*MS_PER_SEC, &ulCC3000DHCP, 1, " Waiting for IP address from DHCP"))
{
printf(" Timed out waiting for IP address from DHCP\n");
return;
}
printf(" Sending mDNS broadcast to signal we're done with Smart Config...\n");
fflush(stdout);
mdnsAdvertiser(1,device_name,strlen(device_name)); // The API documentation says mdnsAdvertiser()
// is supposed to return 0 on success and SOC_ERROR on failure, but it looks like
// what it actually returns is the socket number it used. So we ignore it.
printf(" Smart Config finished!\n");
printf(" Smart Config finished Successfully!\n");
ShowInformation();
fflush(stdout);
}
/*
This is an example of how you'd connect the CC3000 to an AP without using
Smart Config or a stored profile.
@ -417,17 +483,17 @@ void StartSmartConfig(void) {
always going to connect to your network this way you wouldn't need it.
*/
void ManualConnect(void) {
void ManualConnect(void)
{
char ssidName[] = "YourAP";
char AP_KEY[] = "yourpass";
uint8_t rval;
if (!isInitialized)
{
printf("CC3000 not initialized; can't run manual connect.\n");
return;
}
{
printf("CC3000 not initialized; can't run manual connect.\n");
return;
}
printf("Starting manual connect...\n");
@ -437,11 +503,7 @@ void ManualConnect(void) {
printf(" Deleting all existing profiles...\n");
rval = wlan_ioctl_del_profile(255);
printf(" Waiting until disconnected...\n");
while (ulCC3000Connected == 1)
{
usleep(100000); //delay 100ms in busy wait
}
wait_on(15*MS_PER_SEC, &ulCC3000Connected, 0, " Waiting until disconnected");
printf(" Manually connecting...\n");
@ -450,6 +512,7 @@ void ManualConnect(void) {
// Parameter 3 is the MAC adddress of the AP. All the TI examples
// use NULL. I suppose you would want to specify this
// if you were security paranoid.
rval = wlan_connect(WLAN_SEC_WPA2,
ssidName,
strlen(ssidName),
@ -457,12 +520,14 @@ void ManualConnect(void) {
(uint8_t *)AP_KEY,
strlen(AP_KEY));
if (rval==0) {
printf(" Manual connect success.\n");
}
else {
printf(" Unusual return value: %d\n", rval);
}
if (rval==0)
{
printf(" Manual connect success.\n");
}
else
{
printf(" Unusual return value: %d\n", rval);
}
}
/*
@ -483,16 +548,17 @@ void ManualConnect(void) {
manage multiple profiles you'll need to do that yourself.
*/
void ManualAddProfile(void) {
void ManualAddProfile(void)
{
char ssidName[] = "YourAP";
char AP_KEY[] = "yourpass";
uint8_t rval;
if (!isInitialized)
{
printf("CC3000 not initialized; can't run manual add profile.");
return;
}
{
printf("CC3000 not initialized; can't run manual add profile.");
return;
}
printf("Starting manual add profile...\n");
@ -513,34 +579,33 @@ void ManualAddProfile(void) {
strlen(AP_KEY) // WPA security key length
);
if (rval!=255) {
if (rval!=255)
{
// This code is lifted from http://e2e.ti.com/support/low_power_rf/f/851/p/180859/672551.aspx;
// the actual API documentation on wlan_add_profile doesn't specify any of this....
// This code is lifted from http://e2e.ti.com/support/low_power_rf/f/851/p/180859/672551.aspx;
// the actual API documentation on wlan_add_profile doesn't specify any of this....
printf(" Manual add profile success, stored in profile: %d\n", rval);
printf(" Manual add profile success, stored in profile: %d\n", rval);
printf(" Enabling auto connection...\n");
wlan_ioctl_set_connection_policy(DISABLE, DISABLE, ENABLE);
printf(" Enabling auto connection...\n");
wlan_ioctl_set_connection_policy(DISABLE, DISABLE, ENABLE);
printf(" Stopping CC3000...\n");
wlan_stop();
printf(" Stopping CC3000...\n");
wlan_stop();
printf(" Stopping for 5 seconds...\n");
usleep(5000000);
printf(" Stopping for 5 seconds...\n");
usleep(5000000);
printf(" Restarting CC3000...\n");
wlan_start(0);
printf(" Restarting CC3000...\n");
wlan_start(0);
printf(" Manual add profile done!");
}
else {
printf(" Manual add profile failured (all profiles full?).");
}
printf(" Manual add profile done!");
}
else
{
printf(" Manual add profile failured (all profiles full?).");
}
}
/*
The call wlan_ioctl_get_scan_results returns this structure. I couldn't
find it in the TI library so it's defined here. It's 50 bytes with
@ -582,7 +647,8 @@ void ManualAddProfile(void) {
bssid - 6 bytes - the MAC address of this AP
*/
typedef struct scanResults {
typedef struct scanResults
{
unsigned long numNetworksFound;
unsigned long results;
unsigned isValid:1;
@ -592,29 +658,32 @@ typedef struct scanResults {
uint16_t frameTime;
uint8_t ssid_name[32];
uint8_t bssid[6];
} scanResults;
} scanResults;
#define NUM_CHANNELS 16
void ListAccessPoints(void) {
void ListAccessPoints(void)
{
unsigned long aiIntervalList[NUM_CHANNELS];
uint8_t rval;
scanResults sr;
int apCounter, i;
char localB[33];
if (!isInitialized) {
printf("CC3000 not initialized; can't list access points.\n");
return;
}
if (!isInitialized)
{
printf("CC3000 not initialized; can't list access points.\n");
return;
}
printf("List visible access points\n");
printf(" Setting scan paramters...\n");
for (i=0; i<NUM_CHANNELS; i++) {
aiIntervalList[i] = 2000;
}
for (i=0; i<NUM_CHANNELS; i++)
{
aiIntervalList[i] = 2000;
}
rval = wlan_ioctl_set_scan_params(
1000, // enable start application scan
@ -627,13 +696,15 @@ void ListAccessPoints(void) {
205, // probe TX power
aiIntervalList // table of scan intervals per channel
);
if (rval!=0) {
printf(" Got back unusual result from wlan_ioctl_set_scan_params, can't continue: %d\n", rval);
return;
}
printf(" Sleeping 5 seconds to let the CC3000 discover APs...\n");
usleep(5000000);
if (rval!=0)
{
printf(" Got back unusual result from wlan_ioctl_set_scan_params, can't continue: %d\n", rval);
return;
}
//printf(" Sleeping 5 seconds to let the CC3000 discover APs...\n");
//usleep(5000000);
printf(" Getting AP count...\n");
@ -641,56 +712,62 @@ void ListAccessPoints(void) {
// actual # of APs currently seen. Get that # then loop through and print
// out what's found.
if ((rval=wlan_ioctl_get_scan_results(2000, (uint8_t *)&sr))!=0) {
printf(" Got back unusual result from wlan_ioctl_get scan results, can't continue: %d\n", rval);
return;
}
if ((rval=wlan_ioctl_get_scan_results(2000, (uint8_t *)&sr))!=0)
{
printf(" Got back unusual result from wlan_ioctl_get scan results, can't continue: %d\n", rval);
return;
}
apCounter = sr.numNetworksFound;
printf(" Number of APs found: %d\n", apCounter);
do {
if (sr.isValid) {
printf(" \n");
switch(sr.securityMode) {
case WLAN_SEC_UNSEC: // 0
printf("OPEN ");
break;
case WLAN_SEC_WEP: // 1
printf("WEP ");
break;
case WLAN_SEC_WPA: // 2
printf("WPA ");
break;
case WLAN_SEC_WPA2: // 3
printf("WPA2 ");
break;
}
sprintf(localB, "%3d ", sr.rssi);
printf("%s", localB);
memset(localB, 0, 33);
memcpy(localB, sr.ssid_name, sr.ssidLength);
printf("%s", localB);
}
do
{
if (sr.isValid)
{
printf(" ");
switch(sr.securityMode)
{
case WLAN_SEC_UNSEC: // 0
printf("OPEN ");
break;
case WLAN_SEC_WEP: // 1
printf("WEP ");
break;
case WLAN_SEC_WPA: // 2
printf("WPA ");
break;
case WLAN_SEC_WPA2: // 3
printf("WPA2 ");
break;
}
if (--apCounter>0) {
if ((rval=wlan_ioctl_get_scan_results(2000, (uint8_t *)&sr))!=0) {
printf(" Got back unusual result from wlan_ioctl_get scan, can't continue: %d\n", rval);
return;
}
sprintf(localB, "%3d ", sr.rssi);
printf("%s", localB);
memset(localB, 0, 33);
memcpy(localB, sr.ssid_name, sr.ssidLength);
printf("%s\n", localB);
}
if (--apCounter>0)
{
if ((rval=wlan_ioctl_get_scan_results(2000, (uint8_t *)&sr)) !=0 )
{
printf(" Got back unusual result from wlan_ioctl_get scan, can't continue: %d\n", rval);
return;
}
}
}
} while (apCounter>0);
while (apCounter>0);
printf(" Access Point list finished.\n");
}
void PrintIPBytes(uint8_t *ipBytes) {
void PrintIPBytes(uint8_t *ipBytes)
{
printf("%d.%d.%d.%d\n", ipBytes[3], ipBytes[2], ipBytes[1], ipBytes[0]);
}
/*
All the data in all the fields from netapp_ipconfig() are reversed,
e.g. an IP address is read via bytes 3,2,1,0 instead of bytes
@ -701,16 +778,17 @@ void PrintIPBytes(uint8_t *ipBytes) {
the right order etc.
*/
void ShowInformation(void) {
void ShowInformation(void)
{
tNetappIpconfigRetArgs inf;
char localB[33];
int i;
if (!isInitialized) {
printf("CC3000 not initialized; can't get information.\n");
return;
}
if (!isInitialized)
{
printf("CC3000 not initialized; can't get information.\n");
return;
}
printf("CC3000 information:\n");
@ -732,33 +810,35 @@ void ShowInformation(void) {
PrintIPBytes(inf.aucDNSServer);
printf(" MAC address: ");
for (i=(MAC_ADDR_LEN-1); i>=0; i--) {
if (i!=(MAC_ADDR_LEN-1)) {
printf(":");
for (i=(MAC_ADDR_LEN-1); i>=0; i--)
{
if (i!=(MAC_ADDR_LEN-1))
{
printf(":");
}
printf("%X", inf.uaMacAddr[i]);
}
printf("%X", inf.uaMacAddr[i]);
}
printf("\n");
memset(localB, 0, 32);
memcpy(localB, inf.uaSSID, 32);
memset(localB, 0, sizeof(localB));
strncpy(localB, (char*)inf.uaSSID,sizeof(localB));
printf(" Connected to SSID: %d\n", localB);
printf(" Connected to SSID: %s\n", localB);
}
int c3b_main(int argc, char *argv[])
{
char ch='0';
while(ch != 'q' && ch != 'Q')
{
helpme();
do
{
helpme();
ch = getchar();
ch = getchar();
execute(ch);
}
}
while(execute(ch) == 0);
return 0;
}

226
examples/cc3000/shell.c Normal file
View File

@ -0,0 +1,226 @@
/****************************************************************************
* apps/examples/cc3000/shell.c
*
* Copyright (C) 2013 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <gnutt@nuttx.org>
*
* This is a leverage of similar logic from uIP:
*
* Author: Adam Dunkels <adam@sics.se>
* Copyright (c) 2003, 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.
****************************************************************************/
/****************************************************************************
* Included Files
****************************************************************************/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <net/if.h>
#include <arpa/inet.h>
#include <apps/netutils/telnetd.h>
#include <apps/netutils/uiplib.h>
#include "shell.h"
/****************************************************************************
* Definitions
****************************************************************************/
/****************************************************************************
* Private Types
****************************************************************************/
struct ptentry_s
{
FAR const char *commandstr;
void (*pfunc)(int argc, char **argv);
};
/****************************************************************************
* Private Function Prototypes
****************************************************************************/
static void shell_help(int argc, char **argv);
static void shell_quit(int argc, char **argv);
static void shell_unknown(int argc, char **argv);
static void shell_parse(FAR char *line, int len);
/****************************************************************************
* Private Data
****************************************************************************/
static struct ptentry_s g_parsetab[] =
{
{"help", shell_help},
{"exit", shell_quit},
{"?", shell_help},
{NULL, shell_unknown}
};
/****************************************************************************
* Private Functions
****************************************************************************/
/****************************************************************************
* Name: shell_help
****************************************************************************/
static void shell_help(int argc, char **argv)
{
printf("Available commands:\n");
printf(" help, ? - show help\n");
printf(" exit - exit shell\n");
}
/****************************************************************************
* Name: shell_help
****************************************************************************/
static void shell_unknown(int argc, char **argv)
{
if (argv[0])
{
printf("Unknown command: %s\n", argv[0]);
}
}
/****************************************************************************
* Name: shell_quit
****************************************************************************/
static void shell_quit(int argc, char **argv)
{
printf("Bye!\n");
exit(0);
}
/****************************************************************************
* Name: shell_parse
****************************************************************************/
static void shell_parse(FAR char *line, int len)
{
struct ptentry_s *entry;
FAR char *cmd;
FAR char *saveptr;
/* Get the command from the beginning the line */
cmd = strtok_r(line, " \t\n\r\f\v", &saveptr);
if (cmd)
{
/* Now find the matching command in the command table */
for (entry = g_parsetab; entry->commandstr != NULL; entry++)
{
if (strncmp(entry->commandstr, cmd, strlen(entry->commandstr)) == 0)
{
break;
}
}
entry->pfunc(1, &cmd);
}
}
/****************************************************************************
* Name: shell_session
****************************************************************************/
int shell_session(int argc, char *argv[])
{
char line[128];
printf("CC3000 command shell -- NuttX style\n");
printf("Type '?' and return for help\n");
for(;;)
{
printf(SHELL_PROMPT);
fflush(stdout);
if (fgets(line, 128, stdin) == NULL)
{
break;
}
shell_parse(line, 128);
}
return 0;
}
/****************************************************************************
* Name: shell_netinit
****************************************************************************/
static void shell_netinit(void)
{
}
/****************************************************************************
* Public Functions
****************************************************************************/
int shell_main(int argc, char *argv[])
{
struct telnetd_config_s config;
int ret;
/* Configure the network */
printf("shell_main: Initializing the network\n");
shell_netinit();
/* Configure the telnet daemon */
config.d_port = HTONS(23);
config.d_priority = CONFIG_EXAMPLES_TELNETD_DAEMONPRIO;
config.d_stacksize = CONFIG_EXAMPLES_TELNETD_DAEMONSTACKSIZE;
config.t_priority = CONFIG_EXAMPLES_TELNETD_CLIENTPRIO;
config.t_stacksize = CONFIG_EXAMPLES_TELNETD_CLIENTSTACKSIZE;
config.t_entry = shell_session;
/* Start the telnet daemon */
printf("shell_main: Starting the Telnet daemon\n");
ret = telnetd_start(&config);
if (ret < 0)
{
printf("Failed to tart the Telnet daemon\n");
}
printf("shell_main: Exiting\n");
return 0;
}

83
examples/cc3000/shell.h Normal file
View File

@ -0,0 +1,83 @@
/****************************************************************************
* apps/examples/cc3000/shell.h
*
* Copyright (C) 2013 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <gnutt@nuttx.org>
*
* 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.
*
****************************************************************************/
#ifndef __APPS_EXAMPLES_CC3000_SHELL_H
#define __APPS_EXAMPLES_CC3000_SHELL_H
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
/* Configuration ************************************************************/
/* CONFIG_EXAMPLES_TELNETD_DAEMONPRIO - Priority of the Telnet daemon.
* Default: SCHED_PRIORITY_DEFAULT
* CONFIG_EXAMPLES_TELNETD_DAEMONSTACKSIZE - Stack size allocated for the
* Telnet daemon. Default: 2048
* CONFIG_EXAMPLES_TELNETD_CLIENTPRIO- Priority of the Telnet client.
* Default: SCHED_PRIORITY_DEFAULT
* CONFIG_EXAMPLES_TELNETD_CLIENTSTACKSIZE - Stack size allocated for the
* Telnet client. Default: 2048
* CONFIG_EXAMPLES_TELNETD_NOMAC - If the hardware has no MAC address of its
* own, define this =y to provide a bogus address for testing.
* CONFIG_EXAMPLES_TELNETD_IPADDR - The target IP address. Default 10.0.0.2
* CONFIG_EXAMPLES_TELNETD_DRIPADDR - The default router address. Default
* 10.0.0.1
* CONFIG_EXAMPLES_TELNETD_NETMASK - The network mask. Default: 255.255.255.0
*/
#ifndef CONFIG_EXAMPLES_TELNETD_DAEMONPRIO
# define CONFIG_EXAMPLES_TELNETD_DAEMONPRIO SCHED_PRIORITY_DEFAULT
#endif
#ifndef CONFIG_EXAMPLES_TELNETD_DAEMONSTACKSIZE
# define CONFIG_EXAMPLES_TELNETD_DAEMONSTACKSIZE 768
#endif
#ifndef CONFIG_EXAMPLES_TELNETD_CLIENTPRIO
# define CONFIG_EXAMPLES_TELNETD_CLIENTPRIO SCHED_PRIORITY_DEFAULT
#endif
#ifndef CONFIG_EXAMPLES_TELNETD_CLIENTSTACKSIZE
# define CONFIG_EXAMPLES_TELNETD_CLIENTSTACKSIZE 786
#endif
/* Other definitions ********************************************************/
#define SHELL_PROMPT "CC3000 1.0> "
/****************************************************************************
* Public Function Prototypes
****************************************************************************/
int shell_main(int argc, char *argv[]);
#endif /* __APPS_EXAMPLES_CC3000_SHELL_H */

115
examples/cc3000/telnetd.h Normal file
View File

@ -0,0 +1,115 @@
/****************************************************************************
* apps/examples/cc3000/telnetd.c
*
* Copyright (C) 2013 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <gnutt@nuttx.org>
*
* 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 Gregory Nutt 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 COPYRIGHT HOLDERS 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
* COPYRIGHT OWNER 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.
*
****************************************************************************/
#ifndef __APPS_EXAMPLES_CC3000_TELNETD_H
#define __APPS_EXAMPLES_CC3000_TELNETD_H
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
/****************************************************************************
* Public Types
****************************************************************************/
/* This structure represents the overall state of one telnet daemon instance
* (Yes, multiple telnet daemons are supported).
*/
struct telnetd_s
{
int port; /* The port to listen on (in network byte order) */
int priority; /* The execution priority of the spawned task, */
int stacksize; /* The stack size needed by the spawned task */
main_t entry; /* The entrypoint of the task to spawn when a new
* connection is accepted. */
};
/* This structure is used to passed information to telnet daemon when it
* started. It contains global information visable to all telnet daemons.
*/
struct telnetd_common_s
{
uint8_t ndaemons; /* The total number of daemons running */
sem_t startsem; /* Enforces one-at-a-time startup */
sem_t exclsem; /* Enforces exclusive access to 'minor' */
FAR struct telnetd_s *daemon; /* Describes the new daemon */
int minor; /* The next minor number to use */
};
/****************************************************************************
* Public Data
****************************************************************************/
/* This structure is used to passed information to telnet daemon when it
* started. It contains global information visable to all telnet daemons.
*/
extern struct telnetd_common_s g_telnetdcommon;
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: telnetd_driver
*
* Description:
* Create a character driver to "wrap" the telnet session. This function
* will select and return a unique path for the new telnet device.
*
* Parameters:
* sd - The socket descriptor that represents the new telnet connection.
* daemon - A pointer to the structure representing the overall state of
* this instance of the telnet daemon.
*
* Return:
* An allocated string represent the full path to the created driver. The
* receiver of the string must de-allocate this memory when it is no longer
* needed. NULL is returned on a failure.
*
****************************************************************************/
FAR char *telnetd_driver(long sd, FAR struct telnetd_s *daemon);
#endif /* __APPS_EXAMPLES_CC3000_TELNETD_H */

808
examples/cc3000/telnetd_driver.c Normal file
View File

@ -0,0 +1,808 @@
/****************************************************************************
* apps/examples/cc3000/telnetd_driver.c
*
* Copyright (C) 2007, 2009, 2011-2013 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <gnutt@nuttx.org>
*
* This is a leverage of similar logic from uIP which has a compatible BSD
* license:
*
* Author: Adam Dunkels <adam@sics.se>
* Copyright (c) 2003, 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, NuttX 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.
*
****************************************************************************/
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include <sys/types.h>
#include <nuttx/wireless/cc3000/include/sys/socket.h>
#include <stdint.h>
#include <stdbool.h>
#include <stdio.h>
#include <unistd.h>
#include <stdlib.h>
#include <fcntl.h>
#include <string.h>
#include <poll.h>
#include <errno.h>
#include <nuttx/fs/fs.h>
#include <debug.h>
#include <nuttx/net/net.h>
#include <apps/netutils/telnetd.h>
#include "telnetd.h"
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
/* Telnet protocol stuff ****************************************************/
#define ISO_nl 0x0a
#define ISO_cr 0x0d
#define TELNET_IAC 255
#define TELNET_WILL 251
#define TELNET_WONT 252
#define TELNET_DO 253
#define TELNET_DONT 254
/* Device stuff *************************************************************/
#define TELNETD_DEVFMT "/dev/telnetd%d"
/****************************************************************************
* Private Types
****************************************************************************/
/* The state of the telnet parser */
enum telnetd_state_e
{
STATE_NORMAL = 0,
STATE_IAC,
STATE_WILL,
STATE_WONT,
STATE_DO,
STATE_DONT
};
/* This structure describes the internal state of the driver */
struct telnetd_dev_s
{
sem_t td_exclsem; /* Enforces mutually exclusive access */
uint8_t td_state; /* (See telnetd_state_e) */
uint8_t td_pending; /* Number of valid, pending bytes in the rxbuffer */
uint8_t td_offset; /* Offset to the valid, pending bytes in the rxbuffer */
uint8_t td_crefs; /* The number of open references to the session */
int td_minor; /* Minor device number */
long td_psock; /* A clone of the internal socket structure */
char td_rxbuffer[CONFIG_TELNETD_RXBUFFER_SIZE];
char td_txbuffer[CONFIG_TELNETD_TXBUFFER_SIZE];
};
/****************************************************************************
* Private Function Prototypes
****************************************************************************/
/* Support functions */
#ifdef CONFIG_TELNETD_DUMPBUFFER
static inline void telnetd_dumpbuffer(FAR const char *msg,
FAR const char *buffer, unsigned int nbytes);
#else
# define telnetd_dumpbuffer(msg,buffer,nbytes)
#endif
static void telnetd_getchar(FAR struct telnetd_dev_s *priv, uint8_t ch,
FAR char *dest, int *nread);
static ssize_t telnetd_receive(FAR struct telnetd_dev_s *priv,
FAR const char *src, size_t srclen, FAR char *dest,
size_t destlen);
static bool telnetd_putchar(FAR struct telnetd_dev_s *priv, uint8_t ch,
int *nwritten);
static void telnetd_sendopt(FAR struct telnetd_dev_s *priv, uint8_t option,
uint8_t value);
/* Character driver methods */
static int telnetd_open(FAR struct file *filep);
static int telnetd_close(FAR struct file *filep);
static ssize_t telnetd_read(FAR struct file *, FAR char *, size_t);
static ssize_t telnetd_write(FAR struct file *, FAR const char *, size_t);
static int telnetd_ioctl(FAR struct file *filep, int cmd,
unsigned long arg);
/****************************************************************************
* Private Data
****************************************************************************/
static const struct file_operations g_telnetdfops =
{
telnetd_open, /* open */
telnetd_close, /* close */
telnetd_read, /* read */
telnetd_write, /* write */
0, /* seek */
telnetd_ioctl /* ioctl */
#ifndef CONFIG_DISABLE_POLL
, 0 /* poll */
#endif
};
/****************************************************************************
* Private Functions
****************************************************************************/
/****************************************************************************
* Name: telnetd_dumpbuffer
*
* Description:
* Dump a buffer of data (debug only)
*
****************************************************************************/
#ifdef CONFIG_TELNETD_DUMPBUFFER
static inline void telnetd_dumpbuffer(FAR const char *msg,
FAR const char *buffer,
unsigned int nbytes)
{
/* CONFIG_DEBUG, CONFIG_DEBUG_VERBOSE, and CONFIG_DEBUG_NET have to be
* defined or the following does nothing.
*/
nvdbgdumpbuffer(msg, (FAR const uint8_t*)buffer, nbytes);
}
#endif
/****************************************************************************
* Name: telnetd_getchar
*
* Description:
* Get another character for the user received buffer from the RX buffer
*
****************************************************************************/
static void telnetd_getchar(FAR struct telnetd_dev_s *priv, uint8_t ch,
FAR char *dest, int *nread)
{
register int index;
/* Ignore carriage returns */
if (ch != ISO_cr)
{
/* Add all other characters to the destination buffer */
index = *nread;
dest[index++] = ch;
*nread = index;
}
}
/****************************************************************************
* Name: telnetd_receive
*
* Description:
* Process a received telenet buffer
*
****************************************************************************/
static ssize_t telnetd_receive(FAR struct telnetd_dev_s *priv, FAR const char *src,
size_t srclen, FAR char *dest, size_t destlen)
{
int nread;
uint8_t ch;
nllvdbg("srclen: %d destlen: %d\n", srclen, destlen);
for (nread = 0; srclen > 0 && nread < destlen; srclen--)
{
ch = *src++;
nllvdbg("ch=%02x state=%d\n", ch, priv->td_state);
switch (priv->td_state)
{
case STATE_IAC:
if (ch == TELNET_IAC)
{
telnetd_getchar(priv, ch, dest, &nread);
priv->td_state = STATE_NORMAL;
}
else
{
switch (ch)
{
case TELNET_WILL:
priv->td_state = STATE_WILL;
break;
case TELNET_WONT:
priv->td_state = STATE_WONT;
break;
case TELNET_DO:
priv->td_state = STATE_DO;
break;
case TELNET_DONT:
priv->td_state = STATE_DONT;
break;
default:
priv->td_state = STATE_NORMAL;
break;
}
}
break;
case STATE_WILL:
/* Reply with a DONT */
telnetd_sendopt(priv, TELNET_DONT, ch);
priv->td_state = STATE_NORMAL;
break;
case STATE_WONT:
/* Reply with a DONT */
telnetd_sendopt(priv, TELNET_DONT, ch);
priv->td_state = STATE_NORMAL;
break;
case STATE_DO:
/* Reply with a WONT */
telnetd_sendopt(priv, TELNET_WONT, ch);
priv->td_state = STATE_NORMAL;
break;
case STATE_DONT:
/* Reply with a WONT */
telnetd_sendopt(priv, TELNET_WONT, ch);
priv->td_state = STATE_NORMAL;
break;
case STATE_NORMAL:
if (ch == TELNET_IAC)
{
priv->td_state = STATE_IAC;
}
else
{
telnetd_getchar(priv, ch, dest, &nread);
}
break;
}
}
/* We get here if (1) all of the received bytes have been processed, or
* (2) if the user's buffer has become full.
*/
if (srclen > 0)
{
/* Remember where we left off. These bytes will be returned the next
* time that telnetd_read() is called.
*/
priv->td_pending = srclen;
priv->td_offset = (src - priv->td_rxbuffer);
}
else
{
/* All of the received bytes were consumed */
priv->td_pending = 0;
priv->td_offset = 0;
}
return nread;
}
/****************************************************************************
* Name: telnetd_putchar
*
* Description:
* Put another character from the user buffer to the TX buffer.
*
****************************************************************************/
static bool telnetd_putchar(FAR struct telnetd_dev_s *priv, uint8_t ch,
int *nread)
{
register int index;
bool ret = false;
/* Ignore carriage returns (we will put these in automatically as necesary) */
if (ch != ISO_cr)
{
/* Add all other characters to the destination buffer */
index = *nread;
priv->td_txbuffer[index++] = ch;
/* Check for line feeds */
if (ch == ISO_nl)
{
/* Now add the carriage return */
priv->td_txbuffer[index++] = ISO_cr;
priv->td_txbuffer[index++] = '\0';
/* End of line */
ret = true;
}
*nread = index;
}
return ret;
}
/****************************************************************************
* Name: telnetd_sendopt
*
* Description:
* Send the telnet option bytes
*
****************************************************************************/
static void telnetd_sendopt(FAR struct telnetd_dev_s *priv, uint8_t option,
uint8_t value)
{
uint8_t optbuf[4];
optbuf[0] = TELNET_IAC;
optbuf[1] = option;
optbuf[2] = value;
optbuf[3] = 0;
telnetd_dumpbuffer("Send optbuf", optbuf, 4);
if (send(priv->td_psock, optbuf, 4, 0) < 0)
{
nlldbg("Failed to send TELNET_IAC\n");
}
}
/****************************************************************************
* Name: telnetd_open
****************************************************************************/
static int telnetd_open(FAR struct file *filep)
{
FAR struct inode *inode = filep->f_inode;
FAR struct telnetd_dev_s *priv = inode->i_private;
int tmp;
int ret;
nllvdbg("td_crefs: %d\n", priv->td_crefs);
/* O_NONBLOCK is not supported */
if (filep->f_oflags & O_NONBLOCK)
{
ret = -ENOSYS;
goto errout;
}
/* Get exclusive access to the device structures */
ret = sem_wait(&priv->td_exclsem);
if (ret < 0)
{
ret = -errno;
goto errout;
}
/* Increment the count of references to the device. If this the first
* time that the driver has been opened for this device, then initialize
* the device.
*/
tmp = priv->td_crefs + 1;
if (tmp > 255)
{
/* More than 255 opens; uint8_t would overflow to zero */
ret = -EMFILE;
goto errout_with_sem;
}
/* Save the new open count on success */
priv->td_crefs = tmp;
ret = OK;
errout_with_sem:
sem_post(&priv->td_exclsem);
errout:
return ret;
}
/****************************************************************************
* Name: telnetd_close
****************************************************************************/
static int telnetd_close(FAR struct file *filep)
{
FAR struct inode *inode = filep->f_inode;
FAR struct telnetd_dev_s *priv = inode->i_private;
FAR char *devpath;
int ret;
nllvdbg("td_crefs: %d\n", priv->td_crefs);
/* Get exclusive access to the device structures */
ret = sem_wait(&priv->td_exclsem);
if (ret < 0)
{
ret = -errno;
goto errout;
}
/* Decrement the references to the driver. If the reference count will
* decrement to 0, then uninitialize the driver.
*/
if (priv->td_crefs > 1)
{
/* Just decrement the reference count and release the semaphore */
priv->td_crefs--;
sem_post(&priv->td_exclsem);
}
else
{
/* Re-create the path to the driver. */
sched_lock();
ret = asprintf(&devpath, TELNETD_DEVFMT, priv->td_minor);
if (ret < 0)
{
nlldbg("Failed to allocate the driver path\n");
}
else
{
/* Unregister the character driver */
ret = unregister_driver(devpath);
if (ret < 0)
{
nlldbg("Failed to unregister the driver %s: %d\n", ret);
}
free(devpath);
}
/* Close the socket */
closesocket(priv->td_psock);
/* Release the driver memory. What if there are threads waiting on
* td_exclsem? They will never be awakened! How could this happen?
* crefs == 1 so there are no other open references to the driver.
* But this could have if someone were trying to re-open the driver
* after every other thread has closed it. That really should not
* happen in the intended usage model.
*/
DEBUGASSERT(priv->td_exclsem.semcount == 0);
sem_destroy(&priv->td_exclsem);
free(priv);
sched_unlock();
}
ret = OK;
errout:
return ret;
}
/****************************************************************************
* Name: telnetd_read
****************************************************************************/
static ssize_t telnetd_read(FAR struct file *filep, FAR char *buffer, size_t len)
{
FAR struct inode *inode = filep->f_inode;
FAR struct telnetd_dev_s *priv = inode->i_private;
ssize_t ret;
nllvdbg("len: %d\n", len);
/* First, handle the case where there are still valid bytes left in the
* I/O buffer from the last time that read was called. NOTE: Much of
* what we read may be protocol stuff and may not correspond to user
* data. Hence we need the loop and we need may need to call psock_recv()
* multiple times in order to get data that the client is interested in.
*/
do
{
if (priv->td_pending > 0)
{
/* Process the buffered telnet data */
FAR const char *src = &priv->td_rxbuffer[priv->td_offset];
ret = telnetd_receive(priv, src, priv->td_pending, buffer, len);
}
/* Read a buffer of data from the telnet client */
else
{
ret = recv(priv->td_psock, priv->td_rxbuffer,
CONFIG_TELNETD_RXBUFFER_SIZE, 0);
/* Did we receive anything? */
if (ret > 0)
{
/* Yes.. Process the newly received telnet data */
telnetd_dumpbuffer("Received buffer", priv->td_rxbuffer, ret);
ret = telnetd_receive(priv, priv->td_rxbuffer, ret, buffer, len);
}
/* Otherwise the peer closed the connection (ret == 0) or an error
* occurred (ret < 0).
*/
else
{
break;
}
}
}
while (ret == 0);
/* Return:
*
* ret > 0: The number of characters copied into the user buffer by
* telnetd_receive().
* ret <= 0: Loss of connection or error events reported by recv().
*/
return ret;
}
/****************************************************************************
* Name: telnetd_write
****************************************************************************/
static ssize_t telnetd_write(FAR struct file *filep, FAR const char *buffer, size_t len)
{
FAR struct inode *inode = filep->f_inode;
FAR struct telnetd_dev_s *priv = inode->i_private;
FAR const char *src = buffer;
ssize_t nsent;
ssize_t ret;
int ncopied;
char ch;
bool eol;
nllvdbg("len: %d\n", len);
/* Process each character from the user buffer */
for (nsent = 0, ncopied = 0; nsent < len; nsent++)
{
/* Get the next character from the user buffer */
ch = *src++;
/* Add the character to the TX buffer */
eol = telnetd_putchar(priv, ch, &ncopied);
/* Was that the end of a line? Or is the buffer too full to hold the
* next largest character sequence ("\r\n\0")?
*/
if (eol || ncopied > CONFIG_TELNETD_TXBUFFER_SIZE-3)
{
/* Yes... send the data now */
ret = send(priv->td_psock, priv->td_txbuffer, ncopied, 0);
if (ret < 0)
{
nlldbg("psock_send failed '%s': %d\n", priv->td_txbuffer, ret);
return ret;
}
/* Reset the index to the beginning of the TX buffer. */
ncopied = 0;
}
}
/* Send anything remaining in the TX buffer */
if (ncopied > 0)
{
ret = send(priv->td_psock, priv->td_txbuffer, ncopied, 0);
if (ret < 0)
{
nlldbg("psock_send failed '%s': %d\n", priv->td_txbuffer, ret);
return ret;
}
}
/* Notice that we don't actually return the number of bytes sent, but
* rather, the number of bytes that the caller asked us to send. We may
* have sent more bytes (because of CR-LF expansion and because of NULL
* termination). But it confuses some logic if you report that you sent
* more than you were requested to.
*/
return len;
}
/****************************************************************************
* Name: telnetd_poll
****************************************************************************/
static int telnetd_ioctl(FAR struct file *filep, int cmd, unsigned long arg)
{
#if 0 /* No ioctl commands are yet supported */
struct inode *inode = filep->f_inode;
struct cdcacm_dev_s *priv = inode->i_private;
int ret = OK;
switch (cmd)
{
/* Add ioctl commands here */
default:
ret = -ENOTTY;
break;
}
return ret;
#else
return -ENOTTY;
#endif
}
/****************************************************************************
* Name: telnetd_poll
****************************************************************************/
#if 0 /* Not used by this driver */
static int telnetd_poll(FAR struct file *filep, FAR struct pollfd *fds,
bool setup)
{
FAR struct inode *inode = filep->f_inode;
FAR struct telnetd_dev_s *priv = inode->i_private;
}
#endif
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: telnetd_driver
*
* Description:
* Create a character driver to "wrap" the telnet session. This function
* will select and return a unique path for the new telnet device.
*
* Parameters:
* sd - The socket descriptor that represents the new telnet connection.
* daemon - A pointer to the structure representing the overall state of
* this instance of the telnet daemon.
*
* Return:
* An allocated string represent the full path to the created driver. The
* receiver of the string must de-allocate this memory when it is no longer
* needed. NULL is returned on a failure.
*
****************************************************************************/
FAR char *telnetd_driver(long sd, FAR struct telnetd_s *daemon)
{
FAR struct telnetd_dev_s *priv;
FAR char *devpath = NULL;
int ret;
/* Allocate instance data for this driver */
priv = (FAR struct telnetd_dev_s*)malloc(sizeof(struct telnetd_dev_s));
if (!priv)
{
nlldbg("Failed to allocate the driver data structure\n");
return NULL;
}
/* Initialize the allocated driver instance */
sem_init(&priv->td_exclsem, 0, 1);
priv->td_state = STATE_NORMAL;
priv->td_crefs = 0;
priv->td_pending = 0;
priv->td_offset = 0;
priv->td_psock = sd;
/* Allocation a unique minor device number of the telnet drvier */
do
{
ret = sem_wait(&g_telnetdcommon.exclsem);
if (ret < 0 && errno != -EINTR)
{
goto errout_with_dev;
}
}
while (ret < 0);
priv->td_minor = g_telnetdcommon.minor;
g_telnetdcommon.minor++;
sem_post(&g_telnetdcommon.exclsem);
/* Create a path and name for the driver. */
ret = asprintf(&devpath, TELNETD_DEVFMT, priv->td_minor);
if (ret < 0)
{
nlldbg("Failed to allocate the driver path\n");
goto errout_with_dev;
}
/* Register the driver */
ret = register_driver(devpath, &g_telnetdfops, 0666, priv);
if (ret < 0)
{
nlldbg("Failed to register the driver %s: %d\n", devpath, ret);
goto errout_with_devpath;
}
/* Return the path to the new telnet driver */
return devpath;
errout_with_devpath:
free(devpath);
errout_with_dev:
free(priv);
return NULL;
}

1
examples/telnetd/shell.c
View File

@ -45,6 +45,7 @@
#include <string.h>
#include <net/if.h>
#include <arpa/inet.h>
#include <apps/netutils/telnetd.h>
#include <apps/netutils/uiplib.h>

2
netutils/telnetd/telnetd_driver.c
View File

@ -121,7 +121,7 @@ struct telnetd_dev_s
#ifdef CONFIG_TELNETD_DUMPBUFFER
static inline void telnetd_dumpbuffer(FAR const char *msg,
FAR const char *buffer, unsigned int nbytes)
FAR const char *buffer, unsigned int nbytes);
#else
# define telnetd_dumpbuffer(msg,buffer,nbytes)
#endif