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08a35913 ML |
1 | /* |
2 | * This file is part of the libsigrok project. | |
3 | * | |
4 | * Copyright (C) 2013 Martin Ling <martin-sigrok@earth.li> | |
5 | * | |
6 | * This program is free software: you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License as published by | |
8 | * the Free Software Foundation, either version 3 of the License, or | |
9 | * (at your option) any later version. | |
10 | * | |
11 | * This program is distributed in the hope that it will be useful, | |
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | * GNU General Public License for more details. | |
15 | * | |
16 | * You should have received a copy of the GNU General Public License | |
17 | * along with this program. If not, see <http://www.gnu.org/licenses/>. | |
18 | */ | |
19 | ||
6ec6c43b | 20 | #include <config.h> |
589edd9b | 21 | #ifdef _WIN32 |
0f4a4350 | 22 | #define _WIN32_WINNT 0x0501 |
589edd9b ML |
23 | #include <winsock2.h> |
24 | #include <ws2tcpip.h> | |
25 | #endif | |
08a35913 ML |
26 | #include <glib.h> |
27 | #include <string.h> | |
28 | #include <unistd.h> | |
589edd9b | 29 | #ifndef _WIN32 |
08a35913 ML |
30 | #include <sys/socket.h> |
31 | #include <netinet/in.h> | |
32 | #include <arpa/inet.h> | |
33 | #include <netdb.h> | |
987a0530 | 34 | #endif |
08a35913 | 35 | #include <errno.h> |
c1aae900 | 36 | #include <libsigrok/libsigrok.h> |
515ab088 | 37 | #include "libsigrok-internal.h" |
5a1afc09 | 38 | #include "scpi.h" |
08a35913 | 39 | |
3544f848 | 40 | #define LOG_PREFIX "scpi_tcp" |
08a35913 | 41 | |
05c644ea ML |
42 | #define LENGTH_BYTES 4 |
43 | ||
08a35913 ML |
44 | struct scpi_tcp { |
45 | char *address; | |
46 | char *port; | |
47 | int socket; | |
05c644ea ML |
48 | char length_buf[LENGTH_BYTES]; |
49 | int length_bytes_read; | |
50 | int response_length; | |
51 | int response_bytes_read; | |
08a35913 ML |
52 | }; |
53 | ||
17bdda58 AJ |
54 | static int scpi_tcp_dev_inst_new(void *priv, struct drv_context *drvc, |
55 | const char *resource, char **params, const char *serialcomm) | |
f754c146 AJ |
56 | { |
57 | struct scpi_tcp *tcp = priv; | |
58 | ||
17bdda58 | 59 | (void)drvc; |
f754c146 AJ |
60 | (void)resource; |
61 | (void)serialcomm; | |
62 | ||
63 | if (!params || !params[1] || !params[2]) { | |
64 | sr_err("Invalid parameters."); | |
65 | return SR_ERR; | |
66 | } | |
67 | ||
68 | tcp->address = g_strdup(params[1]); | |
d9251a2c UH |
69 | tcp->port = g_strdup(params[2]); |
70 | tcp->socket = -1; | |
f754c146 AJ |
71 | |
72 | return SR_OK; | |
73 | } | |
74 | ||
04229f7b | 75 | static int scpi_tcp_open(struct sr_scpi_dev_inst *scpi) |
08a35913 | 76 | { |
04229f7b | 77 | struct scpi_tcp *tcp = scpi->priv; |
08a35913 ML |
78 | struct addrinfo hints; |
79 | struct addrinfo *results, *res; | |
80 | int err; | |
81 | ||
82 | memset(&hints, 0, sizeof(hints)); | |
83 | hints.ai_family = AF_UNSPEC; | |
84 | hints.ai_socktype = SOCK_STREAM; | |
85 | hints.ai_protocol = IPPROTO_TCP; | |
86 | ||
87 | err = getaddrinfo(tcp->address, tcp->port, &hints, &results); | |
88 | ||
89 | if (err) { | |
6433156c | 90 | sr_err("Address lookup failed: %s:%s: %s", tcp->address, tcp->port, |
08a35913 ML |
91 | gai_strerror(err)); |
92 | return SR_ERR; | |
93 | } | |
94 | ||
95 | for (res = results; res; res = res->ai_next) { | |
96 | if ((tcp->socket = socket(res->ai_family, res->ai_socktype, | |
97 | res->ai_protocol)) < 0) | |
98 | continue; | |
99 | if (connect(tcp->socket, res->ai_addr, res->ai_addrlen) != 0) { | |
100 | close(tcp->socket); | |
101 | tcp->socket = -1; | |
102 | continue; | |
103 | } | |
104 | break; | |
105 | } | |
106 | ||
107 | freeaddrinfo(results); | |
108 | ||
109 | if (tcp->socket < 0) { | |
110 | sr_err("Failed to connect to %s:%s: %s", tcp->address, tcp->port, | |
7237e912 | 111 | g_strerror(errno)); |
08a35913 ML |
112 | return SR_ERR; |
113 | } | |
114 | ||
115 | return SR_OK; | |
116 | } | |
117 | ||
8107a9a6 FS |
118 | static int scpi_tcp_connection_id(struct sr_scpi_dev_inst *scpi, |
119 | char **connection_id) | |
120 | { | |
121 | struct scpi_tcp *tcp = scpi->priv; | |
122 | ||
123 | *connection_id = g_strdup_printf("%s/%s:%s", | |
124 | scpi->prefix, tcp->address, tcp->port); | |
125 | ||
126 | return SR_OK; | |
127 | } | |
128 | ||
102f1239 BV |
129 | static int scpi_tcp_source_add(struct sr_session *session, void *priv, |
130 | int events, int timeout, sr_receive_data_callback cb, void *cb_data) | |
08a35913 ML |
131 | { |
132 | struct scpi_tcp *tcp = priv; | |
133 | ||
102f1239 BV |
134 | return sr_session_source_add(session, tcp->socket, events, timeout, |
135 | cb, cb_data); | |
08a35913 ML |
136 | } |
137 | ||
102f1239 | 138 | static int scpi_tcp_source_remove(struct sr_session *session, void *priv) |
08a35913 ML |
139 | { |
140 | struct scpi_tcp *tcp = priv; | |
141 | ||
102f1239 | 142 | return sr_session_source_remove(session, tcp->socket); |
08a35913 ML |
143 | } |
144 | ||
d87c1766 | 145 | static int scpi_tcp_send(void *priv, const char *command) |
08a35913 ML |
146 | { |
147 | struct scpi_tcp *tcp = priv; | |
148 | int len, out; | |
149 | ||
055804e8 SB |
150 | len = strlen(command); |
151 | out = send(tcp->socket, command, len, 0); | |
08a35913 ML |
152 | |
153 | if (out < 0) { | |
7237e912 | 154 | sr_err("Send error: %s", g_strerror(errno)); |
08a35913 ML |
155 | return SR_ERR; |
156 | } | |
157 | ||
158 | if (out < len) { | |
159 | sr_dbg("Only sent %d/%d bytes of SCPI command: '%s'.", out, | |
160 | len, command); | |
161 | } | |
162 | ||
163 | sr_spew("Successfully sent SCPI command: '%s'.", command); | |
164 | ||
165 | return SR_OK; | |
166 | } | |
167 | ||
d87c1766 | 168 | static int scpi_tcp_read_begin(void *priv) |
08a35913 ML |
169 | { |
170 | struct scpi_tcp *tcp = priv; | |
08a35913 | 171 | |
05c644ea ML |
172 | tcp->response_bytes_read = 0; |
173 | tcp->length_bytes_read = 0; | |
08a35913 ML |
174 | |
175 | return SR_OK; | |
176 | } | |
177 | ||
d87c1766 | 178 | static int scpi_tcp_raw_read_data(void *priv, char *buf, int maxlen) |
104ed125 AJ |
179 | { |
180 | struct scpi_tcp *tcp = priv; | |
181 | int len; | |
182 | ||
183 | len = recv(tcp->socket, buf, maxlen, 0); | |
184 | ||
185 | if (len < 0) { | |
7237e912 | 186 | sr_err("Receive error: %s", g_strerror(errno)); |
104ed125 AJ |
187 | return SR_ERR; |
188 | } | |
189 | ||
190 | tcp->length_bytes_read = LENGTH_BYTES; | |
191 | tcp->response_length = len < maxlen ? len : maxlen + 1; | |
192 | tcp->response_bytes_read = len; | |
193 | ||
194 | return len; | |
195 | } | |
196 | ||
b6be55ce SS |
197 | static int scpi_tcp_raw_write_data(void *priv, char *buf, int len) |
198 | { | |
199 | struct scpi_tcp *tcp = priv; | |
200 | int sentlen; | |
201 | ||
202 | sentlen = send(tcp->socket, buf, len, 0); | |
203 | ||
204 | if (sentlen < 0) { | |
205 | sr_err("Send error: %s.", g_strerror(errno)); | |
206 | return SR_ERR; | |
207 | } | |
208 | ||
209 | return sentlen; | |
210 | } | |
211 | ||
d87c1766 | 212 | static int scpi_tcp_rigol_read_data(void *priv, char *buf, int maxlen) |
08a35913 ML |
213 | { |
214 | struct scpi_tcp *tcp = priv; | |
215 | int len; | |
216 | ||
05c644ea ML |
217 | if (tcp->length_bytes_read < LENGTH_BYTES) { |
218 | len = recv(tcp->socket, tcp->length_buf + tcp->length_bytes_read, | |
219 | LENGTH_BYTES - tcp->length_bytes_read, 0); | |
220 | if (len < 0) { | |
7237e912 | 221 | sr_err("Receive error: %s", g_strerror(errno)); |
05c644ea ML |
222 | return SR_ERR; |
223 | } | |
224 | ||
225 | tcp->length_bytes_read += len; | |
226 | ||
227 | if (tcp->length_bytes_read < LENGTH_BYTES) | |
228 | return 0; | |
229 | else | |
230 | tcp->response_length = RL32(tcp->length_buf); | |
231 | } | |
232 | ||
233 | if (tcp->response_bytes_read >= tcp->response_length) | |
234 | return SR_ERR; | |
235 | ||
08a35913 ML |
236 | len = recv(tcp->socket, buf, maxlen, 0); |
237 | ||
238 | if (len < 0) { | |
7237e912 | 239 | sr_err("Receive error: %s", g_strerror(errno)); |
08a35913 ML |
240 | return SR_ERR; |
241 | } | |
242 | ||
05c644ea ML |
243 | tcp->response_bytes_read += len; |
244 | ||
08a35913 ML |
245 | return len; |
246 | } | |
247 | ||
d87c1766 | 248 | static int scpi_tcp_read_complete(void *priv) |
05c644ea ML |
249 | { |
250 | struct scpi_tcp *tcp = priv; | |
251 | ||
252 | return (tcp->length_bytes_read == LENGTH_BYTES && | |
253 | tcp->response_bytes_read >= tcp->response_length); | |
254 | } | |
255 | ||
04229f7b | 256 | static int scpi_tcp_close(struct sr_scpi_dev_inst *scpi) |
08a35913 | 257 | { |
04229f7b | 258 | struct scpi_tcp *tcp = scpi->priv; |
08a35913 ML |
259 | |
260 | if (close(tcp->socket) < 0) | |
261 | return SR_ERR; | |
262 | ||
263 | return SR_OK; | |
264 | } | |
265 | ||
d87c1766 | 266 | static void scpi_tcp_free(void *priv) |
08a35913 ML |
267 | { |
268 | struct scpi_tcp *tcp = priv; | |
269 | ||
270 | g_free(tcp->address); | |
271 | g_free(tcp->port); | |
08a35913 ML |
272 | } |
273 | ||
104ed125 AJ |
274 | SR_PRIV const struct sr_scpi_dev_inst scpi_tcp_raw_dev = { |
275 | .name = "RAW TCP", | |
276 | .prefix = "tcp-raw", | |
87aa1e63 | 277 | .transport = SCPI_TRANSPORT_RAW_TCP, |
104ed125 AJ |
278 | .priv_size = sizeof(struct scpi_tcp), |
279 | .dev_inst_new = scpi_tcp_dev_inst_new, | |
280 | .open = scpi_tcp_open, | |
8107a9a6 | 281 | .connection_id = scpi_tcp_connection_id, |
104ed125 AJ |
282 | .source_add = scpi_tcp_source_add, |
283 | .source_remove = scpi_tcp_source_remove, | |
284 | .send = scpi_tcp_send, | |
285 | .read_begin = scpi_tcp_read_begin, | |
286 | .read_data = scpi_tcp_raw_read_data, | |
b6be55ce | 287 | .write_data = scpi_tcp_raw_write_data, |
104ed125 AJ |
288 | .read_complete = scpi_tcp_read_complete, |
289 | .close = scpi_tcp_close, | |
290 | .free = scpi_tcp_free, | |
291 | }; | |
292 | ||
293 | SR_PRIV const struct sr_scpi_dev_inst scpi_tcp_rigol_dev = { | |
294 | .name = "RIGOL TCP", | |
295 | .prefix = "tcp-rigol", | |
87aa1e63 | 296 | .transport = SCPI_TRANSPORT_RIGOL_TCP, |
f754c146 AJ |
297 | .priv_size = sizeof(struct scpi_tcp), |
298 | .dev_inst_new = scpi_tcp_dev_inst_new, | |
299 | .open = scpi_tcp_open, | |
8107a9a6 | 300 | .connection_id = scpi_tcp_connection_id, |
f754c146 AJ |
301 | .source_add = scpi_tcp_source_add, |
302 | .source_remove = scpi_tcp_source_remove, | |
303 | .send = scpi_tcp_send, | |
304 | .read_begin = scpi_tcp_read_begin, | |
104ed125 | 305 | .read_data = scpi_tcp_rigol_read_data, |
f754c146 AJ |
306 | .read_complete = scpi_tcp_read_complete, |
307 | .close = scpi_tcp_close, | |
308 | .free = scpi_tcp_free, | |
309 | }; |