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////////////////////////////////////////////////////////////////////////////////
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//
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// Filename: netuart.cpp
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//
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// Project: OpenArty, an entirely open SoC based upon the Arty platform
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//
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// Purpose:
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//
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// Creator: Dan Gisselquist, Ph.D.
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// Gisselquist Technology, LLC
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//
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////////////////////////////////////////////////////////////////////////////////
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//
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// Copyright (C) 2015-2017, Gisselquist Technology, LLC
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//
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// This program is free software (firmware): you can redistribute it and/or
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// modify it under the terms of the GNU General Public License as published
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// by the Free Software Foundation, either version 3 of the License, or (at
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// your option) any later version.
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//
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// This program is distributed in the hope that it will be useful, but WITHOUT
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// ANY WARRANTY; without even the implied warranty of MERCHANTIBILITY or
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// FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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// for more details.
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//
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// You should have received a copy of the GNU General Public License along
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// with this program. (It's in the $(ROOT)/doc directory. Run make with no
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// target there if the PDF file isn't present.) If not, see
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// <http://www.gnu.org/licenses/> for a copy.
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//
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// License: GPL, v3, as defined and found on www.gnu.org,
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// http://www.gnu.org/licenses/gpl.html
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//
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//
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////////////////////////////////////////////////////////////////////////////////
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//
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//
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#include <stdio.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <unistd.h>
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#include <sys/types.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <sys/stat.h>
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Line 166... |
lb.m_connected = false;
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lb.m_connected = false;
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nfds = 1;
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nfds = 1;
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// assert(nw == nr);
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// assert(nw == nr);
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}
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}
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}
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}
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} else if (nr < 0) {
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fprintf(stderr, "ERR: Could not read from TTY\n");
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perror("O/S Err:");
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exit(EXIT_FAILURE);
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} else if (nr == 0) {
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fprintf(stderr, "TTY device has closed\n");
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exit(EXIT_SUCCESS);
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} for(int i=0; i<nr; i++) {
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} for(int i=0; i<nr; i++) {
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lb.m_iline[lb.m_ilen++] = lb.m_buf[i];
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lb.m_iline[lb.m_ilen++] = lb.m_buf[i];
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if ((lb.m_iline[lb.m_ilen-1]=='\n')||(lb.m_iline[lb.m_ilen-1]=='\r')||(lb.m_ilen>=sizeof(lb.m_iline)-1)) {
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if ((lb.m_iline[lb.m_ilen-1]=='\n')
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if (lb.m_ilen >= sizeof(lb.m_iline)-1)
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||(lb.m_iline[lb.m_ilen-1]=='\r')
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||((unsigned)lb.m_ilen
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>= sizeof(lb.m_iline)-1)) {
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if ((unsigned)lb.m_ilen >= sizeof(lb.m_iline)-1)
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lb.m_iline[lb.m_ilen] = '\0';
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lb.m_iline[lb.m_ilen] = '\0';
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else
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else
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lb.m_iline[lb.m_ilen-1] = '\0';
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lb.m_iline[lb.m_ilen-1] = '\0';
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if (lb.m_ilen > 1)
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if (lb.m_ilen > 1)
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printf("%c %s\n",
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printf("%c %s\n",
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(confd>=0)?'>':'#', lb.m_iline);
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(confd>=0)?'>':'#', lb.m_iline);
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lb.m_ilen = 0;
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lb.m_ilen = 0;
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}
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}
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}
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}
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} else if (p[0].revents)
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} else if (p[0].revents) {
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printf("UNKNOWN TTY EVENT: %d\n", p[0].revents);
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fprintf(stderr, "ERR: UNKNOWN TTY EVENT: %d\n", p[0].revents);
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perror("O/S Err?");
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exit(EXIT_FAILURE);
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}
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if((nfds>1)&&(p[1].revents & POLLIN)) {
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if((nfds>1)&&(p[1].revents & POLLIN)) {
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int nr = read(confd, lb.m_buf, 256);
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int nr = read(confd, lb.m_buf, 256);
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if (nr == 0) {
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if (nr == 0) {
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lb.m_connected = false;
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lb.m_connected = false;
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Line 222... |
} else if (nw < 0) {
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} else if (nw < 0) {
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fprintf(stderr, "ERR: %4d\n", errno);
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fprintf(stderr, "ERR: %4d\n", errno);
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perror("O/S Err: ");
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perror("O/S Err: ");
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assert(nw > 0);
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assert(nw > 0);
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break;
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break;
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} else if (nw == 0) {
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// TTY device has closed our connection
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fprintf(stderr, "TTY device has closed\n");
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exit(EXIT_SUCCESS);
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break;
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}
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}
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// if (nw != nr-ttlw)
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// if (nw != nr-ttlw)
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// printf("Only wrote %d\n", nw);
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// printf("Only wrote %d\n", nw);
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ttlw += nw;
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ttlw += nw;
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} while(ttlw < nr);
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} while(ttlw < nr);
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} for(int i=0; i<nr; i++) {
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} for(int i=0; i<nr; i++) {
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lb.m_oline[lb.m_olen++] = lb.m_buf[i];
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lb.m_oline[lb.m_olen++] = lb.m_buf[i];
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assert(lb.m_buf[i] != '\0');
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assert(lb.m_buf[i] != '\0');
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if ((lb.m_oline[lb.m_olen-1]=='\n')||(lb.m_oline[lb.m_olen-1]=='\r')||(lb.m_olen >= sizeof(lb.m_oline)-1)) {
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if ((lb.m_oline[lb.m_olen-1]=='\n')
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if (lb.m_olen >= sizeof(lb.m_oline)-1)
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||(lb.m_oline[lb.m_olen-1]=='\r')
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||((unsigned)lb.m_olen
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>= sizeof(lb.m_oline)-1)) {
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if ((unsigned)lb.m_olen >= sizeof(lb.m_oline)-1)
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lb.m_oline[lb.m_olen] = '\0';
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lb.m_oline[lb.m_olen] = '\0';
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else
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else
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lb.m_oline[lb.m_olen-1] = '\0';
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lb.m_oline[lb.m_olen-1] = '\0';
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if (lb.m_olen > 1)
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if (lb.m_olen > 1)
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printf("< %s\n", lb.m_oline);
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printf("< %s\n", lb.m_oline);
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lb.m_olen = 0;
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lb.m_olen = 0;
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}
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}
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}
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}
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} else if ((nfds>1)&&(p[1].revents)) {
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} else if ((nfds>1)&&(p[1].revents)) {
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printf("UNKNOWN SKT EVENT: %d\n", p[1].revents);
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fprintf(stderr, "UNKNOWN SKT EVENT: %d\n", p[1].revents);
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perror("O/S Err?");
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exit(EXIT_FAILURE);
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}
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}
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return (pv > 0);
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return (pv > 0);
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}
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}
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Line 388... |
// Flush any buffer within the TTY
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// Flush any buffer within the TTY
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while(check_incoming(lb, tty, -1, 0))
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while(check_incoming(lb, tty, -1, 0))
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;
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;
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// Now, process that connection until it's gone
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// Now, process that connection until it's gone
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while(lb.m_connected) {
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while(lb.m_connected)
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check_incoming(lb, tty, con, -1);
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check_incoming(lb, tty, con, -1);
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}
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}
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}
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printf("Closing our socket\n");
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printf("Closing our socket\n");
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close(skt);
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close(skt);
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}
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}
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