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2021-01-09 22:01:21 +01:00
#include <cmdHandler.h>
#include <cmdHelper.h>
#include <stdint.h>
#include <stdbool.h>
#include <stdlib.h>
#include <string.h>
#include <stdio.h>
#include <stdarg.h>
#include <socket.h>
#include <logger.h>
#include <PontCoopScheduler.h>
#include <wizHelper.h>
#include <config.h>
extern const uint8_t CMD_SOCK;
const uint16_t cmdPort = 23;
typedef enum {
CH_INIT,
CH_LISTEN,
CH_WAITING,
CH_BANNER,
CH_PROMPT,
CH_RECEIVE,
CH_DISCONNECT,
CH_DISCONNECT_WAIT,
CH_ERROR
} chState_t;
void sendString(const char *buf) {
send(CMD_SOCK, (uint8_t*)buf, strlen(buf));
}
bool sendFormatString(const char *format, ...) {
bool retCode = true;
va_list vl;
va_start(vl, format);
char buf[4096];
int vcnt = vsnprintf(buf, sizeof(buf), format, vl);
retCode = (vcnt < sizeof(buf));
va_end(vl);
sendString(buf);
return retCode;
}
// returns 0 to continue waiting for input
// returns -1 to close the connection
// returns 1 to toggle to admin mode
// returns 2 to toggle to config mode
// returns 3 to toggle back to default mode
static int8_t cmdExecuteCommand(uint8_t *cmdLine, bool resetSpecialModes) {
const static char HELP_MSG[] = \
"Usage\n\r" \
"\n\r" \
"help ................................. Show this help page\n\r" \
"quit ................................. Terminate the console session\n\r" \
"enable ............................... Enable admin mode\n\r" \
"config ............................... Enter configuration mode\n\r" \
"disable .............................. Disable admin/config mode\n\r" \
;
const static char CONFIG_INTRO_MSG[] = \
"In configuration mode each command changing the configuration\n\r" \
"will save changes directly to the EEPROM.\n\r" \
"However, the system will only consider these changes after a\n\r" \
"restart since only in this sitution the EEPROM is read.\n\r" \
"\n\r" \
;
const static char GOODBYE_MSG[] = "Good bye\n\r";
const static char OK_MSG[] = "OK\n\r";
const static char FAILED_MSG[] = "Failed\n\r";
const static char UNKNOWN_COMMAND[] = "Unknown command\n\r";
uint8_t *messageToSend = NULL;
static bool adminMode = false;
static bool configMode = false;
if (resetSpecialModes) {
adminMode = false;
configMode = false;
}
cmd_t const * commands = getRegularCommands();
if (adminMode) {
commands = getAdminCommands();
} else if (configMode) {
commands = getConfigCommands();
}
coloredMsg(LOG_YELLOW, true, "ch cec cmdLine is %s", cmdLine);;
#define MAX_NUM_OF_ARGS 8
char *args[MAX_NUM_OF_TASKS];
uint8_t argc = 0;
char *inCmdLine = (char*)cmdLine;
do {
args[argc++] = strtok(inCmdLine, " ");
inCmdLine = NULL;
} while (args[argc - 1] != NULL);
if (argc > 0) {
argc--;
}
char *cmd = args[0];
int8_t retCode = 0;
coloredMsg(LOG_YELLOW, true, "ch cec cmd is %s, number of arguments %d", cmd, argc);
if (0 == strcmp(cmd, "quit")) {
messageToSend = (uint8_t*)GOODBYE_MSG;
retCode = -1;
} else if (0 == strcmp(cmd, "help")) {
if (configMode) {
sendString(CONFIG_INTRO_MSG);
}
sendString(HELP_MSG);
uint8_t cmdIdx = 0;
while (true) {
cmd_t command = commands[cmdIdx];
if (0 == strcmp("END_OF_CMDS", command.name)) {
break;
}
sendString(command.help);
cmdIdx++;
}
messageToSend = NULL;
} else if (0 == strcmp(cmd, "enable")) {
coloredMsg(LOG_YELLOW, true, "ch cec enable admin mode");
adminMode = true;
retCode = 1;
} else if (0 == strcmp(cmd, "disable")) {
coloredMsg(LOG_YELLOW, true, "ch cec disable admin mode");
adminMode = false;
configMode = false;
retCode = 3;
} else if (0 == strcmp(cmd, "config")) {
coloredMsg(LOG_YELLOW, true, "ch cec enable config mode");
configMode = true;
retCode = 2;
} else {
uint8_t cmdIdx = 0;
while (true) {
cmd_t command = commands[cmdIdx];
if (0 == strcmp("END_OF_CMDS", command.name)) {
messageToSend = (uint8_t*) UNKNOWN_COMMAND;
break;
}
if (0 == strcmp(cmd, command.name)) {
messageToSend = command.cmdFunc(argc, args) ? (uint8_t*)OK_MSG : (uint8_t*)FAILED_MSG;
break;
}
cmdIdx++;
}
}
if (messageToSend) {
coloredMsg(LOG_YELLOW, true, "ch cec command finally returns %s", messageToSend);
send(CMD_SOCK, messageToSend, strlen((char*)messageToSend));
}
return retCode;
}
static void cmdHandlerEngine(void *handle) {
static uint8_t receiveBuffer[256];
static chState_t state = CH_INIT;
static bool resetSpecialModes = false;
static char banner[] = \
"MBGW3\n\r" \
"Type help for usage help\n\r" \
"or quit to close the connection.\n\r";
static char *prompt;
static char defaultPrompt[] = " > ";
static char adminPrompt[] = " (admin) # ";
static char configPrompt[] = " (config) $ ";
int8_t res = 0;
uint8_t sockState;
int32_t resultSend;
int16_t receivedOctets;
int32_t resultRecv;
uint8_t resultDisconnect;
if (isNetworkAvailable()) {
switch (state) {
case CH_INIT:
coloredMsg(LOG_YELLOW, false, "ch che initializing socket");
res = socket(CMD_SOCK, Sn_MR_TCP, cmdPort, SF_IO_NONBLOCK);
coloredMsg(LOG_YELLOW, false, "ch che socket returns %d", res);
if (res == CMD_SOCK) {
coloredMsg(LOG_YELLOW, false, "ch che socket is initialized");
state = CH_LISTEN;
} else {
state = CH_ERROR;
}
break;
case CH_LISTEN:
coloredMsg(LOG_YELLOW, false, "ch che listening");
res = listen(CMD_SOCK);
coloredMsg(LOG_YELLOW, false, "ch che listen returns %d", res);
if (res == SOCK_OK) {
coloredMsg(LOG_YELLOW, false, "ch che ok, waiting for established");
state = CH_WAITING;
} else {
state = CH_ERROR;
}
break;
case CH_WAITING:
sockState = getSn_SR(CMD_SOCK);
if (sockState != SOCK_LISTEN) {
coloredMsg(LOG_YELLOW, false, "ch che socket state is 0x%02x", sockState);
state = CH_DISCONNECT;
}
if (sockState == SOCK_ESTABLISHED) {
coloredMsg(LOG_YELLOW, true, "ch che connection is established");
state = CH_BANNER;
}
break;
case CH_BANNER:
coloredMsg(LOG_YELLOW, false, "ch che send banner");
sockState = getSn_SR(CMD_SOCK);
if (sockState != SOCK_ESTABLISHED) {
coloredMsg(LOG_YELLOW, true, "ch che sockState is 0x%02x when trying to send banner", sockState);
state = CH_DISCONNECT;
} else {
resultSend = send(CMD_SOCK, (uint8_t*)banner, strlen(banner));
coloredMsg(LOG_YELLOW, false, "ch che sent banner, send returns 0x%02x", resultSend);
prompt = defaultPrompt;
resetSpecialModes = true;
state = CH_PROMPT;
}
break;
case CH_PROMPT:
coloredMsg(LOG_YELLOW, false, "ch che send prompt");
sockState = getSn_SR(CMD_SOCK);
if (sockState != SOCK_ESTABLISHED) {
coloredMsg(LOG_YELLOW, true, "ch che sockState is 0x%02x when trying to send promt", sockState);
state = CH_DISCONNECT;
} else {
sendFormatString("%s %s", getConfig()->deviceName, prompt);
coloredMsg(LOG_YELLOW, false, "ch che sent prompt %s %s", getConfig()->deviceName, prompt);
state = CH_RECEIVE;
}
break;
case CH_RECEIVE:
sockState = getSn_SR(CMD_SOCK);
if (sockState != SOCK_ESTABLISHED) {
coloredMsg(LOG_YELLOW, true, "ch che sockState is 0x%02x when trying to receive something", sockState);
state = CH_DISCONNECT;
} else {
receivedOctets = getSn_RX_RSR(CMD_SOCK);
if (receivedOctets > 0) {
memset(receiveBuffer, 0, sizeof(receiveBuffer));
resultRecv = recv(CMD_SOCK, receiveBuffer, sizeof(receiveBuffer));
coloredMsg(LOG_YELLOW, false, "ch che recv returns 0x%02x", resultRecv);
if (resultRecv > 0) {
if ((receiveBuffer[strlen((char*)receiveBuffer) - 1] == 0x0a) ||
(receiveBuffer[strlen((char*)receiveBuffer) - 1] == 0x0d)) {
receiveBuffer[strlen((char*)receiveBuffer) - 1] = 0;
}
if ((receiveBuffer[strlen((char*)receiveBuffer) - 1] == 0x0a) ||
(receiveBuffer[strlen((char*)receiveBuffer) - 1] == 0x0d)) {
receiveBuffer[strlen((char*)receiveBuffer) - 1] = 0;
}
coloredMsg(LOG_YELLOW, false, "ch che received: %s", receiveBuffer);
int8_t resCEC = cmdExecuteCommand(receiveBuffer, resetSpecialModes);
resetSpecialModes = false;
switch (resCEC) {
case 0:
state = CH_PROMPT;
break;
case -1:
state = CH_DISCONNECT;
break;
case 1:
prompt = adminPrompt;
state = CH_PROMPT;
break;
case 2:
prompt = configPrompt;
state = CH_PROMPT;
break;
case 3:
prompt = defaultPrompt;
state = CH_PROMPT;
break;
}
}
}
}
break;
case CH_DISCONNECT:
coloredMsg(LOG_YELLOW, true, "ch che close our end");
resultDisconnect = disconnect(CMD_SOCK);
coloredMsg(LOG_YELLOW, true, "ch che disconnect returns 0x%02x", resultDisconnect);
state = CH_DISCONNECT_WAIT;
break;
case CH_DISCONNECT_WAIT:
//coloredMsg(LOG_YELLOW, false, "ch che waiting after disconnect");
sockState = getSn_SR(CMD_SOCK);
//coloredMsg(LOG_YELLOW, false, "ch che sockState is 0x%02x", sockState);
if (sockState == SOCK_CLOSED) {
coloredMsg(LOG_YELLOW, true, "ch che socket is closed now");
state = CH_INIT;
}
break;
case CH_ERROR:
coloredMsg(LOG_YELLOW, true, "ch che error state, will stop here");
schDel(cmdHandlerEngine, NULL);
state = CH_INIT;
schAdd(cmdHandlerEngine, NULL, 5000, 100);
coloredMsg(LOG_YELLOW, true, "ch che restart command handler engine in 5s");
break;
}
}
}
void cmdHandlerInit() {
schAdd(cmdHandlerEngine, NULL, 0, 100);
}