+++ /dev/null
-/*
- * This file is part of the libsigrok project.
- *
- * Copyright (C) 2013 Martin Ling <martin-sigrok@earth.li>
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- */
-
-#ifdef _WIN32
-#define _WIN32_WINNT 0x0501
-#include <winsock2.h>
-#include <ws2tcpip.h>
-#endif
-
-#include "libsigrok.h"
-#include "libsigrok-internal.h"
-
-#include <glib.h>
-#include <string.h>
-#include <unistd.h>
-#ifndef _WIN32
-#include <sys/socket.h>
-#include <netinet/in.h>
-#include <arpa/inet.h>
-#include <netdb.h>
-#endif
-#include <errno.h>
-
-#define LOG_PREFIX "scpi_tcp"
-
-#define LENGTH_BYTES 4
-
-struct scpi_tcp {
- char *address;
- char *port;
- int socket;
- char length_buf[LENGTH_BYTES];
- int length_bytes_read;
- int response_length;
- int response_bytes_read;
-};
-
-static int scpi_tcp_dev_inst_new(void *priv, struct drv_context *drvc,
- const char *resource, char **params, const char *serialcomm)
-{
- struct scpi_tcp *tcp = priv;
-
- (void)drvc;
- (void)resource;
- (void)serialcomm;
-
- if (!params || !params[1] || !params[2]) {
- sr_err("Invalid parameters.");
- return SR_ERR;
- }
-
- tcp->address = g_strdup(params[1]);
- tcp->port = g_strdup(params[2]);
- tcp->socket = -1;
-
- return SR_OK;
-}
-
-static int scpi_tcp_open(void *priv)
-{
- struct scpi_tcp *tcp = priv;
- struct addrinfo hints;
- struct addrinfo *results, *res;
- int err;
-
- memset(&hints, 0, sizeof(hints));
- hints.ai_family = AF_UNSPEC;
- hints.ai_socktype = SOCK_STREAM;
- hints.ai_protocol = IPPROTO_TCP;
-
- err = getaddrinfo(tcp->address, tcp->port, &hints, &results);
-
- if (err) {
- sr_err("Address lookup failed: %s:%d: %s", tcp->address, tcp->port,
- gai_strerror(err));
- return SR_ERR;
- }
-
- for (res = results; res; res = res->ai_next) {
- if ((tcp->socket = socket(res->ai_family, res->ai_socktype,
- res->ai_protocol)) < 0)
- continue;
- if (connect(tcp->socket, res->ai_addr, res->ai_addrlen) != 0) {
- close(tcp->socket);
- tcp->socket = -1;
- continue;
- }
- break;
- }
-
- freeaddrinfo(results);
-
- if (tcp->socket < 0) {
- sr_err("Failed to connect to %s:%s: %s", tcp->address, tcp->port,
- strerror(errno));
- return SR_ERR;
- }
-
- return SR_OK;
-}
-
-static int scpi_tcp_source_add(struct sr_session *session, void *priv,
- int events, int timeout, sr_receive_data_callback cb, void *cb_data)
-{
- struct scpi_tcp *tcp = priv;
-
- return sr_session_source_add(session, tcp->socket, events, timeout,
- cb, cb_data);
-}
-
-static int scpi_tcp_source_remove(struct sr_session *session, void *priv)
-{
- struct scpi_tcp *tcp = priv;
-
- return sr_session_source_remove(session, tcp->socket);
-}
-
-static int scpi_tcp_send(void *priv, const char *command)
-{
- struct scpi_tcp *tcp = priv;
- int len, out;
- char *terminated_command;
-
- terminated_command = g_strdup_printf("%s\r\n", command);
- len = strlen(terminated_command);
- out = send(tcp->socket, terminated_command, len, 0);
- g_free(terminated_command);
-
- if (out < 0) {
- sr_err("Send error: %s", strerror(errno));
- return SR_ERR;
- }
-
- if (out < len) {
- sr_dbg("Only sent %d/%d bytes of SCPI command: '%s'.", out,
- len, command);
- }
-
- sr_spew("Successfully sent SCPI command: '%s'.", command);
-
- return SR_OK;
-}
-
-static int scpi_tcp_read_begin(void *priv)
-{
- struct scpi_tcp *tcp = priv;
-
- tcp->response_bytes_read = 0;
- tcp->length_bytes_read = 0;
-
- return SR_OK;
-}
-
-static int scpi_tcp_raw_read_data(void *priv, char *buf, int maxlen)
-{
- struct scpi_tcp *tcp = priv;
- int len;
-
- len = recv(tcp->socket, buf, maxlen, 0);
-
- if (len < 0) {
- sr_err("Receive error: %s", strerror(errno));
- return SR_ERR;
- }
-
- tcp->length_bytes_read = LENGTH_BYTES;
- tcp->response_length = len < maxlen ? len : maxlen + 1;
- tcp->response_bytes_read = len;
-
- return len;
-}
-
-static int scpi_tcp_rigol_read_data(void *priv, char *buf, int maxlen)
-{
- struct scpi_tcp *tcp = priv;
- int len;
-
- if (tcp->length_bytes_read < LENGTH_BYTES) {
- len = recv(tcp->socket, tcp->length_buf + tcp->length_bytes_read,
- LENGTH_BYTES - tcp->length_bytes_read, 0);
- if (len < 0) {
- sr_err("Receive error: %s", strerror(errno));
- return SR_ERR;
- }
-
- tcp->length_bytes_read += len;
-
- if (tcp->length_bytes_read < LENGTH_BYTES)
- return 0;
- else
- tcp->response_length = RL32(tcp->length_buf);
- }
-
- if (tcp->response_bytes_read >= tcp->response_length)
- return SR_ERR;
-
- len = recv(tcp->socket, buf, maxlen, 0);
-
- if (len < 0) {
- sr_err("Receive error: %s", strerror(errno));
- return SR_ERR;
- }
-
- tcp->response_bytes_read += len;
-
- return len;
-}
-
-static int scpi_tcp_read_complete(void *priv)
-{
- struct scpi_tcp *tcp = priv;
-
- return (tcp->length_bytes_read == LENGTH_BYTES &&
- tcp->response_bytes_read >= tcp->response_length);
-}
-
-static int scpi_tcp_close(void *priv)
-{
- struct scpi_tcp *tcp = priv;
-
- if (close(tcp->socket) < 0)
- return SR_ERR;
-
- return SR_OK;
-}
-
-static void scpi_tcp_free(void *priv)
-{
- struct scpi_tcp *tcp = priv;
-
- g_free(tcp->address);
- g_free(tcp->port);
-}
-
-SR_PRIV const struct sr_scpi_dev_inst scpi_tcp_raw_dev = {
- .name = "RAW TCP",
- .prefix = "tcp-raw",
- .priv_size = sizeof(struct scpi_tcp),
- .dev_inst_new = scpi_tcp_dev_inst_new,
- .open = scpi_tcp_open,
- .source_add = scpi_tcp_source_add,
- .source_remove = scpi_tcp_source_remove,
- .send = scpi_tcp_send,
- .read_begin = scpi_tcp_read_begin,
- .read_data = scpi_tcp_raw_read_data,
- .read_complete = scpi_tcp_read_complete,
- .close = scpi_tcp_close,
- .free = scpi_tcp_free,
-};
-
-SR_PRIV const struct sr_scpi_dev_inst scpi_tcp_rigol_dev = {
- .name = "RIGOL TCP",
- .prefix = "tcp-rigol",
- .priv_size = sizeof(struct scpi_tcp),
- .dev_inst_new = scpi_tcp_dev_inst_new,
- .open = scpi_tcp_open,
- .source_add = scpi_tcp_source_add,
- .source_remove = scpi_tcp_source_remove,
- .send = scpi_tcp_send,
- .read_begin = scpi_tcp_read_begin,
- .read_data = scpi_tcp_rigol_read_data,
- .read_complete = scpi_tcp_read_complete,
- .close = scpi_tcp_close,
- .free = scpi_tcp_free,
-};
projects / libsigrok.git / blobdiff