| Line 43... |
Line 43... |
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#include "address_map.h"
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#include "address_map.h"
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#include "timer.h"
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#include "timer.h"
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#include "line-buffer.h"
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#include "line-buffer.h"
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#include "packet.h"
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#include "packet.h"
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#include "serial.h"
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#include "tcp.h"
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#include "tcp.h"
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#include "telnet.h"
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#include "telnet.h"
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#include "utilities.h"
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/* Global variables */
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telnet_t* first_telnet_g = NULL;
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/* input argument is a pointer to the previous socket,
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if this is the first socket object, then it is NULL */
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telnet_t* new_telnet(telnet_t* prev)
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{
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telnet_t* telnet;
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app_t* app;
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telnet = (telnet_t*) malloc(sizeof(telnet_t));
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app = (app_t*) malloc(sizeof(app_t));
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/* cross reference between the two objects */
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app->telnet = telnet;
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app->type = APP_TELNET;
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telnet->app = app;
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telnet->txbuf = init_line_buffer(0x80000);
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telnet->rxbuf = init_line_buffer(0x1000);
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telnet->sent_opening_message = 0;
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telnet->echo_mode = 0;
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telnet->connection_state = TELNET_CLOSED;
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telnet->options_sent = 0;
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/* Chain the socket objects together */
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if (prev == NULL){
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telnet->first = telnet;
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telnet->id = 0;
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}
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else {
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telnet->first = prev->first;
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telnet->id = prev->id + 1;
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prev->next = telnet;
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}
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telnet->next = NULL;
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return telnet;
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}
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void listen_telnet ()
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{
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telnet_t* telnet;
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int telnet_socket;
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/* Add a new socket to the end of the list */
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if (first_telnet_g == NULL) {
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trace("first_telnet_g == NULL");
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first_telnet_g = new_telnet(NULL);
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telnet = first_telnet_g;
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}
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else {
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telnet = first_telnet_g;
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for(;;){
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if (telnet->next!=NULL)
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telnet=telnet->next;
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else
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break;
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}
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telnet = new_telnet(telnet);
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}
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/* Create a new socket and listen on it at port 23 */
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telnet_socket = listen_socket(23, telnet->app);
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trace("telnet_socket = %d", telnet_socket);
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}
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void telnet_disconnect(app_t * app)
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{
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telnet_t* telnet;
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trace("disconnect!");
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telnet = (telnet_t*)(app->telnet);
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telnet->connection_state = TELNET_CLOSED;
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telnet->options_sent = 0;
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telnet->sent_opening_message = 0;
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telnet->echo_mode = 0; // reset this setting
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}
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void parse_telnet_options(char* buf, socket_t* socket)
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void parse_telnet_options(char* buf, socket_t* socket)
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{
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{
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int i;
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int i;
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int stage = 0;
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int stage = 0;
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char stage1;
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char stage1;
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telnet_t* telnet = (telnet_t*) socket->app->telnet;
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for (i=0;i<socket->rx_packet->tcp_payload_len;i++) {
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for (i=0;i<socket->rx_packet->tcp_payload_len;i++) {
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if (stage == 0) {
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if (stage == 0) {
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switch (buf[i]) {
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switch (buf[i]) {
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case 241: stage = 0; break; // NOP
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case 241: stage = 0; break; // NOP
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case 255: stage = 1;
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case 255: stage = 1;
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if (socket->telnet_connection_state == TELNET_CLOSED) {
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if (telnet->connection_state == TELNET_CLOSED) {
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socket->telnet_connection_state = TELNET_OPEN;
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telnet->connection_state = TELNET_OPEN;
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}
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}
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break; // IAC
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break; // IAC
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default: if (buf[i] < 128)
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default: if (buf[i] < 128)
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goto telnet_payload;
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goto telnet_payload;
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| Line 85... |
Line 174... |
stage = 0;
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stage = 0;
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switch (buf[i]) {
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switch (buf[i]) {
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case 1: // echo
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case 1: // echo
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/* Client request that server echos stuff back to client */
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/* Client request that server echos stuff back to client */
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if (stage1 == TELNET_DO)
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if (stage1 == TELNET_DO)
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socket->telnet_echo_mode = 1;
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telnet->echo_mode = 1;
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/* Client request that server does not echo stuff back to client */
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/* Client request that server does not echo stuff back to client */
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else if (stage1 == TELNET_DONT)
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else if (stage1 == TELNET_DONT)
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socket->telnet_echo_mode = 0;
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telnet->echo_mode = 0;
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break;
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break;
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case 3: break; // suppress go ahead
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case 3: break; // suppress go ahead
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case 5: break; // status
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case 5: break; // status
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case 6: break; // time mark
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case 6: break; // time mark
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| Line 119... |
Line 208... |
void parse_telnet_payload(char * buf, socket_t* socket)
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void parse_telnet_payload(char * buf, socket_t* socket)
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{
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{
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int i;
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int i;
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int cr = 0;
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int cr = 0;
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int windows = 0;
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int windows = 0;
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telnet_t* telnet = (telnet_t*) socket->app->telnet;
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for (i=0;i<socket->rx_packet->telnet_payload_len;i++) {
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for (i=0;i<socket->rx_packet->telnet_payload_len;i++) {
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if (buf[i] == '\n')
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if (buf[i] == '\n')
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windows = 1;
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windows = 1;
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else if (buf[i] < 128 && buf[i] != 0) {
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else if (buf[i] < 128 && buf[i] != 0) {
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/* end of a line */
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/* end of a line */
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/* receive \r\n from Windows, \r from Linux */
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/* receive \r\n from Windows, \r from Linux */
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if (buf[i] == '\r') {
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if (buf[i] == '\r') {
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cr=1;
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cr=1;
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put_byte(socket->telnet_rxbuf, buf[i], 1); /* last byte of line */
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put_byte(telnet->rxbuf, buf[i], 1); /* last byte of line */
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}
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}
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else {
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else {
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put_byte(socket->telnet_rxbuf, buf[i], 0); /* not last byte of line */
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put_byte(telnet->rxbuf, buf[i], 0); /* not last byte of line */
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}
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}
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}
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}
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}
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}
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if (socket->telnet_echo_mode) {
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if (telnet->echo_mode) {
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if (cr && !windows) {
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if (cr && !windows) {
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buf[socket->rx_packet->telnet_payload_len] = '\n';
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buf[socket->rx_packet->telnet_payload_len] = '\n';
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socket->rx_packet->telnet_payload_len++;
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socket->rx_packet->telnet_payload_len++;
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}
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}
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tcp_reply(socket, buf, socket->rx_packet->telnet_payload_len);
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tcp_reply(socket, buf, socket->rx_packet->telnet_payload_len);
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| Line 178... |
Line 269... |
tcp_tx(socket, first_line, total_line_len);
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tcp_tx(socket, first_line, total_line_len);
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}
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}
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}
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}
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/* Create a new telnet option, and a new socket to listen on */
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void process_telnet(socket_t* socket)
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void process_telnet(socket_t* socket)
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{
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{
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char* line;
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char* line;
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telnet_t* telnet = (telnet_t*) socket->app->telnet;
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if (!socket->telnet_options_sent){
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if (!telnet->options_sent){
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telnet_options(socket);
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telnet_options(socket);
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socket->telnet_options_sent = 1;
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telnet->options_sent = 1;
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}
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}
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else {
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else {
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/* Send telnet greeting */
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/* Send telnet greeting */
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if (!socket->telnet_sent_opening_message){
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if (!telnet->sent_opening_message){
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put_line (socket->telnet_txbuf, "Amber Processor Boot Loader\r\n> ");
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put_line (telnet->txbuf, "Amber Processor Boot Loader\r\n> ");
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socket->telnet_sent_opening_message = 1;
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telnet->sent_opening_message = 1;
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trace("telnet listen on new socket");
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listen_telnet();
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}
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}
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/* Parse telnet rx buffer */
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/* Parse telnet rx buffer */
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if (get_line(socket->telnet_rxbuf, &line))
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if (get_line(telnet->rxbuf, &line))
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parse_command (socket, line);
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parse_command (telnet, line);
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/* Transmit text from telnet tx buffer */
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/* Transmit text from telnet tx buffer */
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telnet_tx(socket, socket->telnet_txbuf);
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telnet_tx(socket, telnet->txbuf);
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}
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}
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}
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}
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/* Parse a command line passed from main and execute the command */
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/* Parse a command line passed from main and execute the command */
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/* returns the length of the reply string */
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/* returns the length of the reply string */
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int parse_command (socket_t* socket, char* line)
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int parse_command (telnet_t* telnet, char* line)
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{
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{
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unsigned int start_addr;
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unsigned int start_addr;
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unsigned int address;
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unsigned int address;
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unsigned int range;
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unsigned int range;
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int len, error = 0;
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int len, error = 0;
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socket_t* socket = (socket_t*) telnet->app->socket;
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/* All commands are just a single character.
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/* All commands are just a single character.
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Just ignore anything else */
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Just ignore anything else */
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switch (line[0]) {
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switch (line[0]) {
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/* Disconnect */
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/* Disconnect */
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case 'e':
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case 'e':
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case 'x':
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case 'x':
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case 'q':
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case 'q':
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trace("set disconnect flag on socket");
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socket->tcp_disconnect = 1;
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socket->tcp_disconnect = 1;
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return 0;
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return 0;
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case 'r': /* Read mem */
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case 'r': /* Read mem */
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{
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{
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if (len = get_hex (&line[2], &start_addr)) {
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if (len = get_hex (&line[2], &start_addr)) {
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if (len = get_hex (&line[3+len], &range)) {
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if (len = get_hex (&line[3+len], &range)) {
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for (address=start_addr; address<start_addr+range; address+=4) {
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for (address=start_addr; address<start_addr+range; address+=4) {
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put_line (socket->telnet_txbuf, "0x%08x 0x%08x\r\n",
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put_line (telnet->txbuf, "0x%08x 0x%08x\r\n",
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address, *(unsigned int *)address);
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address, *(unsigned int *)address);
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}
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}
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}
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}
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else {
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else {
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put_line (socket->telnet_txbuf, "0x%08x 0x%08x\r\n",
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put_line (telnet->txbuf, "0x%08x 0x%08x\r\n",
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start_addr, *(unsigned int *)start_addr);
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start_addr, *(unsigned int *)start_addr);
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}
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}
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}
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}
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else
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else
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error=1;
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error=1;
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break;
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break;
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}
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}
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case 'h': {/* Help */
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case 'h': {/* Help */
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put_line (socket->telnet_txbuf, "You need help alright\r\n");
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put_line (telnet->txbuf, "You need help alright\r\n");
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break;
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break;
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}
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}
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case 's': {/* Status */
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case 's': {/* Status */
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put_line (socket->telnet_txbuf, "Socket ID %d\r\n", socket->id);
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put_line (telnet->txbuf, "Socket ID %d\r\n", socket->id);
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put_line (socket->telnet_txbuf, "Packets received %d\r\n", socket->packets_received);
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put_line (telnet->txbuf, "Packets received %d\r\n", socket->packets_received);
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put_line (socket->telnet_txbuf, "Packets transmitted %d\r\n", socket->packets_sent);
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put_line (telnet->txbuf, "Packets transmitted %d\r\n", socket->packets_sent);
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put_line (socket->telnet_txbuf, "Packets resent %d\r\n", socket->packets_resent);
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put_line (telnet->txbuf, "Packets resent %d\r\n", socket->packets_resent);
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put_line (socket->telnet_txbuf, "TCP checksum errors %d\r\n", tcp_checksum_errors_g);
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put_line (telnet->txbuf, "TCP checksum errors %d\r\n", tcp_checksum_errors_g);
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put_line (socket->telnet_txbuf, "Counterparty IP %d.%d.%d.%d\r\n",
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put_line (telnet->txbuf, "Counterparty IP %d.%d.%d.%d\r\n",
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socket->rx_packet->src_ip[0],
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socket->rx_packet->src_ip[0],
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socket->rx_packet->src_ip[1],
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socket->rx_packet->src_ip[1],
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socket->rx_packet->src_ip[2],
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socket->rx_packet->src_ip[2],
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socket->rx_packet->src_ip[3]);
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socket->rx_packet->src_ip[3]);
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put_line (socket->telnet_txbuf, "Counterparty Port %d\r\n",
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put_line (telnet->txbuf, "Counterparty Port %d\r\n",
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socket->rx_packet->tcp_src_port);
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socket->rx_packet->tcp_src_port);
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put_line (socket->telnet_txbuf, "Malloc pointer 0x%08x\r\n",
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put_line (telnet->txbuf, "Malloc pointer 0x%08x\r\n",
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*(unsigned int *)(ADR_MALLOC_POINTER));
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*(unsigned int *)(ADR_MALLOC_POINTER));
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put_line (socket->telnet_txbuf, "Malloc count %d\r\n",
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put_line (telnet->txbuf, "Malloc count %d\r\n",
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*(unsigned int *)(ADR_MALLOC_COUNT));
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*(unsigned int *)(ADR_MALLOC_COUNT));
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put_line (socket->telnet_txbuf, "Uptime %d seconds\r\n", current_time_g->seconds);
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put_line (telnet->txbuf, "Uptime %d seconds\r\n",
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current_time_g->seconds);
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break;
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break;
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}
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}
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default: {
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default: {
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| Line 282... |
Line 383... |
}
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}
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}
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}
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if (error)
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if (error)
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put_line (socket->telnet_txbuf, "You're not making any sense\r\n",
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put_line (telnet->txbuf, "You're not making any sense\r\n",
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line[0], line[1], line[2]);
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line[0], line[1], line[2]);
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put_line (socket->telnet_txbuf, "> ");
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put_line (telnet->txbuf, "> ");
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return 0;
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return 0;
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}
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}
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No newline at end of file
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No newline at end of file
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No newline at end of file
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No newline at end of file
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