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cmd handler stuff

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This commit is contained in:
Wolfgang Hottgenroth
2020-11-16 14:33:54 +01:00
parent 17264c1c1a
commit 1dbcd966fc
1 changed files with 52 additions and 21 deletions
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73
cube/User/Src/cmdHandler.c
View File

@ -16,6 +16,17 @@ 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;
// returns 0 to continue waiting for input
// returns -1 to close the connection
@ -35,13 +46,17 @@ int8_t cmdExecuteCommand(uint8_t *cmd) {
void cmdHandlerEngine(void *handle) {
static uint8_t receiveBuffer[256];
static uint8_t state = 0;
static chState_t state = CH_INIT;
static uint8_t banner[] = \
"MBGW3\n\r" \
"Type help for usage help\n\r" \
"or quit to close the connection.\n\r";
static uint8_t *prompt;
static uint8_t defaultPrompt[] = "MBGW3 # ";
static uint8_t elevatedPrompt[] = "MBGW3 (admin) > ";
int8_t res = 0;
uint8_t sockState;
@ -52,7 +67,7 @@ void cmdHandlerEngine(void *handle) {
if (isNetworkAvailable()) {
switch (state) {
case 0:
case CH_INIT:
coloredMsg(LOG_YELLOW, "che, initializing socket");
res = socket(CMD_SOCK, Sn_MR_TCP, cmdPort, SF_IO_NONBLOCK);
@ -60,13 +75,13 @@ void cmdHandlerEngine(void *handle) {
if (res == CMD_SOCK) {
coloredMsg(LOG_YELLOW, "che, socket is initialized");
state = 1;
state = CH_LISTEN;
} else {
state = 255;
state = CH_ERROR;
}
break;
case 1:
case CH_LISTEN:
coloredMsg(LOG_YELLOW, "che, listening");
res = listen(CMD_SOCK);
@ -74,13 +89,13 @@ void cmdHandlerEngine(void *handle) {
if (res == SOCK_OK) {
coloredMsg(LOG_YELLOW, "che, ok, waiting for established");
state = 2;
state = CH_WAITING;
} else {
state = 255;
state = CH_ERROR;
}
break;
case 2:
case CH_WAITING:
//coloredMsg(LOG_YELLOW, "che, waiting for established");
sockState = getSn_SR(CMD_SOCK);
@ -90,28 +105,42 @@ void cmdHandlerEngine(void *handle) {
if (sockState == SOCK_ESTABLISHED) {
coloredMsg(LOG_YELLOW, "che, connection is established");
state = 3;
state = CH_BANNER;
}
break;
case 3:
case CH_BANNER:
coloredMsg(LOG_YELLOW, "che, send banner");
sockState = getSn_SR(CMD_SOCK);
if (sockState != SOCK_ESTABLISHED) {
coloredMsg(LOG_YELLOW, "che sockState is 0x%02x when trying to send banner", sockState);
state = 5;
state = CH_DISCONNECT;
} else {
resultSend = send(CMD_SOCK, banner, strlen(banner));
coloredMsg(LOG_YELLOW, "che, sent banner, send returns 0x%02x", resultSend);
state = 4;
prompt = defaultPrompt;
state = CH_PROMPT;
}
break;
case 4:
case CH_PROMPT:
coloredMsg(LOG_YELLOW, "che send prompt");
sockState = getSn_SR(CMD_SOCK);
if (sockState != SOCK_ESTABLISHED) {
coloredMsg(LOG_YELLOW, "che sockState is 0x%02x when trying to send promt", sockState);
state = CH_DISCONNECT;
} else {
resultSend = send(CMD_SOCK, prompt, strlen(prompt));
coloredMsg(LOG_YELLOW, "che, sent prompt %s, send returns 0x%02x", prompt, resultSend);
state = CH_RECEIVE;
}
break;
case CH_RECEIVE:
sockState = getSn_SR(CMD_SOCK);
if (sockState != SOCK_ESTABLISHED) {
coloredMsg(LOG_YELLOW, "che sockState is 0x%02x when trying to receive something", sockState);
state = 5;
state = CH_DISCONNECT;
} else {
// coloredMsg(LOG_YELLOW, "che, now waiting for some input");
receivedOctets = getSn_RX_RSR(CMD_SOCK);
@ -132,32 +161,34 @@ void cmdHandlerEngine(void *handle) {
}
coloredMsg(LOG_YELLOW, "che, received: %s", receiveBuffer);
if (-1 == cmdExecuteCommand(receiveBuffer)) {
state = 5;
state = CH_DISCONNECT;
} else {
state = CH_PROMPT;
}
}
}
}
break;
case 5:
case CH_DISCONNECT:
coloredMsg(LOG_YELLOW, "che, close our end");
resultDisconnect = disconnect(CMD_SOCK);
coloredMsg(LOG_YELLOW, "che, disconnect returns 0x%02x", resultDisconnect);
state = 6;
state = CH_DISCONNECT_WAIT;
break;
case 6:
case CH_DISCONNECT_WAIT:
coloredMsg(LOG_YELLOW, "che, waiting after disconnect");
sockState = getSn_SR(CMD_SOCK);
coloredMsg(LOG_YELLOW, "che, sockState is 0x%02x", sockState);
if (sockState == SOCK_CLOSED) {
coloredMsg(LOG_YELLOW, "che, socket is closed now");
state = 0;
state = CH_INIT;
}
break;
case 255:
case CH_ERROR:
coloredMsg(LOG_YELLOW, "che, error state, will stop here");
schDel(cmdHandlerEngine, NULL);
break;