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7d658874 | 1 | /* |
50985c20 | 2 | * This file is part of the libsigrok project. |
7d658874 | 3 | * |
13d8e03c | 4 | * Copyright (C) 2013 Bert Vermeulen <bert@biot.com> |
7d658874 BV |
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> |
7d658874 BV |
21 | #include <string.h> |
22 | #include <stdlib.h> | |
7d658874 | 23 | #include <zip.h> |
5f9c4c8a | 24 | #include <errno.h> |
7d658874 | 25 | #include <glib.h> |
3bbd9849 | 26 | #include <glib/gstdio.h> |
c1aae900 | 27 | #include <libsigrok/libsigrok.h> |
45c59c8b | 28 | #include "libsigrok-internal.h" |
7d658874 | 29 | |
2ad1deb8 | 30 | /** @cond PRIVATE */ |
3544f848 | 31 | #define LOG_PREFIX "session-file" |
2ad1deb8 | 32 | /** @endcond */ |
a885ce3e | 33 | |
393fb9cb UH |
34 | /** |
35 | * @file | |
36 | * | |
37 | * Loading and saving libsigrok session files. | |
38 | */ | |
39 | ||
7b870c38 | 40 | /** |
777e2035 | 41 | * @addtogroup grp_session |
7b870c38 UH |
42 | * |
43 | * @{ | |
44 | */ | |
45 | ||
c09f0b57 | 46 | extern SR_PRIV struct sr_dev_driver session_driver; |
c6805a02 SA |
47 | static int session_driver_initialized = 0; |
48 | ||
5e1fb334 DE |
49 | /** Read metadata entries from a session archive. |
50 | * @param[in] archive An open ZIP archive. | |
51 | * @param[in] entry Stat buffer filled in for the metadata archive member. | |
52 | * @return A new key/value store containing the session metadata. | |
53 | */ | |
54 | SR_PRIV GKeyFile *sr_sessionfile_read_metadata(struct zip *archive, | |
55 | const struct zip_stat *entry) | |
56 | { | |
57 | GKeyFile *keyfile; | |
58 | GError *error; | |
59 | struct zip_file *zf; | |
60 | char *metabuf; | |
61 | int metalen; | |
62 | ||
63 | if (entry->size > G_MAXINT || !(metabuf = g_try_malloc(entry->size))) { | |
64 | sr_err("Metadata buffer allocation failed."); | |
65 | return NULL; | |
66 | } | |
67 | zf = zip_fopen_index(archive, entry->index, 0); | |
68 | if (!zf) { | |
69 | sr_err("Failed to open metadata: %s", zip_strerror(archive)); | |
70 | g_free(metabuf); | |
71 | return NULL; | |
72 | } | |
73 | metalen = zip_fread(zf, metabuf, entry->size); | |
74 | if (metalen < 0) { | |
75 | sr_err("Failed to read metadata: %s", zip_file_strerror(zf)); | |
76 | zip_fclose(zf); | |
77 | g_free(metabuf); | |
78 | return NULL; | |
79 | } | |
80 | zip_fclose(zf); | |
81 | ||
82 | keyfile = g_key_file_new(); | |
83 | error = NULL; | |
84 | g_key_file_load_from_data(keyfile, metabuf, metalen, | |
85 | G_KEY_FILE_NONE, &error); | |
86 | g_free(metabuf); | |
87 | ||
88 | if (error) { | |
89 | sr_err("Failed to parse metadata: %s", error->message); | |
90 | g_error_free(error); | |
91 | g_key_file_free(keyfile); | |
92 | return NULL; | |
93 | } | |
94 | return keyfile; | |
95 | } | |
96 | ||
72a08bcc | 97 | /** @private */ |
f438e0c9 | 98 | SR_PRIV int sr_sessionfile_check(const char *filename) |
7d658874 | 99 | { |
7d658874 BV |
100 | struct zip *archive; |
101 | struct zip_file *zf; | |
102 | struct zip_stat zs; | |
5e1fb334 DE |
103 | uint64_t version; |
104 | int ret; | |
f438e0c9 | 105 | char s[11]; |
7d658874 | 106 | |
f438e0c9 | 107 | if (!filename) |
9f45fb3a | 108 | return SR_ERR_ARG; |
9f45fb3a | 109 | |
5e1fb334 DE |
110 | if (!g_file_test(filename, G_FILE_TEST_IS_REGULAR)) { |
111 | sr_err("Not a regular file: %s.", filename); | |
5f9c4c8a BV |
112 | return SR_ERR; |
113 | } | |
114 | ||
5e1fb334 | 115 | if (!(archive = zip_open(filename, 0, NULL))) |
f438e0c9 BV |
116 | /* No logging: this can be used just to check if it's |
117 | * a sigrok session file or not. */ | |
7d658874 | 118 | return SR_ERR; |
7d658874 BV |
119 | |
120 | /* check "version" */ | |
121 | if (!(zf = zip_fopen(archive, "version", 0))) { | |
f438e0c9 | 122 | sr_dbg("Not a sigrok session file: no version found."); |
5e1fb334 | 123 | zip_discard(archive); |
7d658874 BV |
124 | return SR_ERR; |
125 | } | |
5e1fb334 DE |
126 | ret = zip_fread(zf, s, sizeof(s) - 1); |
127 | if (ret < 0) { | |
128 | sr_err("Failed to read version file: %s", | |
129 | zip_file_strerror(zf)); | |
130 | zip_fclose(zf); | |
131 | zip_discard(archive); | |
7d658874 | 132 | return SR_ERR; |
5e1fb334 | 133 | } |
7d658874 | 134 | zip_fclose(zf); |
5e1fb334 DE |
135 | s[ret] = '\0'; |
136 | version = g_ascii_strtoull(s, NULL, 10); | |
137 | if (version == 0 || version > 2) { | |
138 | sr_dbg("Cannot handle sigrok session file version %" PRIu64 ".", | |
139 | version); | |
140 | zip_discard(archive); | |
c1864d55 BV |
141 | return SR_ERR; |
142 | } | |
5e1fb334 | 143 | sr_spew("Detected sigrok session file version %" PRIu64 ".", version); |
7d658874 BV |
144 | |
145 | /* read "metadata" */ | |
5e1fb334 | 146 | if (zip_stat(archive, "metadata", 0, &zs) < 0) { |
a885ce3e | 147 | sr_dbg("Not a valid sigrok session file."); |
5e1fb334 | 148 | zip_discard(archive); |
7d658874 BV |
149 | return SR_ERR; |
150 | } | |
5e1fb334 | 151 | zip_discard(archive); |
aba57f35 | 152 | |
f438e0c9 BV |
153 | return SR_OK; |
154 | } | |
155 | ||
156 | /** | |
157 | * Load the session from the specified filename. | |
158 | * | |
61e6e2da | 159 | * @param ctx The context in which to load the session. |
d386a52f BV |
160 | * @param filename The name of the session file to load. |
161 | * @param session The session to load the file into. | |
f438e0c9 | 162 | * |
d386a52f BV |
163 | * @retval SR_OK Success |
164 | * @retval SR_ERR_MALLOC Memory allocation error | |
165 | * @retval SR_ERR_DATA Malformed session file | |
166 | * @retval SR_ERR This is not a session file | |
f438e0c9 | 167 | */ |
61e6e2da ML |
168 | SR_API int sr_session_load(struct sr_context *ctx, const char *filename, |
169 | struct sr_session **session) | |
f438e0c9 BV |
170 | { |
171 | GKeyFile *kf; | |
5e1fb334 | 172 | GError *error; |
f438e0c9 | 173 | struct zip *archive; |
f438e0c9 BV |
174 | struct zip_stat zs; |
175 | struct sr_dev_inst *sdi; | |
6f1346fb | 176 | struct sr_channel *ch; |
c6805a02 | 177 | int ret, i, j; |
5e1fb334 DE |
178 | uint64_t tmp_u64; |
179 | int total_channels, k; | |
180 | int unitsize; | |
181 | char **sections, **keys, *val; | |
3f239f08 | 182 | char channelname[SR_MAX_CHANNELNAME_LEN + 1]; |
f438e0c9 BV |
183 | |
184 | if ((ret = sr_sessionfile_check(filename)) != SR_OK) | |
185 | return ret; | |
186 | ||
5e1fb334 | 187 | if (!(archive = zip_open(filename, 0, NULL))) |
f438e0c9 BV |
188 | return SR_ERR; |
189 | ||
5e1fb334 DE |
190 | if (zip_stat(archive, "metadata", 0, &zs) < 0) { |
191 | zip_discard(archive); | |
f438e0c9 | 192 | return SR_ERR; |
b53738ba | 193 | } |
5e1fb334 DE |
194 | kf = sr_sessionfile_read_metadata(archive, &zs); |
195 | zip_discard(archive); | |
196 | if (!kf) | |
197 | return SR_ERR_DATA; | |
b53738ba | 198 | |
5e1fb334 DE |
199 | if ((ret = sr_session_new(ctx, session)) != SR_OK) { |
200 | g_key_file_free(kf); | |
0812c40e | 201 | return ret; |
5e1fb334 | 202 | } |
7d658874 | 203 | |
5e1fb334 | 204 | error = NULL; |
d386a52f | 205 | ret = SR_OK; |
7d658874 | 206 | sections = g_key_file_get_groups(kf, NULL); |
d386a52f | 207 | for (i = 0; sections[i] && ret == SR_OK; i++) { |
7d658874 BV |
208 | if (!strcmp(sections[i], "global")) |
209 | /* nothing really interesting in here yet */ | |
210 | continue; | |
211 | if (!strncmp(sections[i], "device ", 7)) { | |
212 | /* device section */ | |
4d684427 | 213 | sdi = NULL; |
7d658874 BV |
214 | keys = g_key_file_get_keys(kf, sections[i], NULL, NULL); |
215 | for (j = 0; keys[j]; j++) { | |
7d658874 | 216 | if (!strcmp(keys[j], "capturefile")) { |
5e1fb334 DE |
217 | val = g_key_file_get_string(kf, sections[i], |
218 | keys[j], &error); | |
219 | if (!val) { | |
220 | ret = SR_ERR_DATA; | |
221 | break; | |
222 | } | |
aac29cc1 | 223 | sdi = g_malloc0(sizeof(struct sr_dev_inst)); |
4d684427 | 224 | sdi->driver = &session_driver; |
0af636be | 225 | sdi->status = SR_ST_ACTIVE; |
c6805a02 | 226 | if (!session_driver_initialized) { |
c09f0b57 | 227 | /* first device, init the driver */ |
c6805a02 | 228 | session_driver_initialized = 1; |
4f840ce9 | 229 | sdi->driver->init(sdi->driver, NULL); |
c6805a02 | 230 | } |
bd7bfe8c | 231 | sr_dev_open(sdi); |
0812c40e | 232 | sr_session_dev_add(*session, sdi); |
1de3cced ML |
233 | (*session)->owned_devs = g_slist_append( |
234 | (*session)->owned_devs, sdi); | |
5e1fb334 DE |
235 | sr_config_set(sdi, NULL, SR_CONF_SESSIONFILE, |
236 | g_variant_new_string(filename)); | |
237 | sr_config_set(sdi, NULL, SR_CONF_CAPTUREFILE, | |
238 | g_variant_new_string(val)); | |
239 | g_free(val); | |
7d658874 | 240 | } else if (!strcmp(keys[j], "samplerate")) { |
5e1fb334 DE |
241 | val = g_key_file_get_string(kf, sections[i], |
242 | keys[j], &error); | |
243 | if (!sdi || !val || sr_parse_sizestring(val, | |
244 | &tmp_u64) != SR_OK) { | |
245 | g_free(val); | |
d386a52f BV |
246 | ret = SR_ERR_DATA; |
247 | break; | |
248 | } | |
5e1fb334 DE |
249 | g_free(val); |
250 | sr_config_set(sdi, NULL, SR_CONF_SAMPLERATE, | |
251 | g_variant_new_uint64(tmp_u64)); | |
7d658874 | 252 | } else if (!strcmp(keys[j], "unitsize")) { |
5e1fb334 DE |
253 | unitsize = g_key_file_get_integer(kf, sections[i], |
254 | keys[j], &error); | |
255 | if (!sdi || unitsize <= 0 || error) { | |
d386a52f BV |
256 | ret = SR_ERR_DATA; |
257 | break; | |
258 | } | |
5e1fb334 DE |
259 | sr_config_set(sdi, NULL, SR_CONF_CAPTURE_UNITSIZE, |
260 | g_variant_new_uint64(unitsize)); | |
7d658874 | 261 | } else if (!strcmp(keys[j], "total probes")) { |
5e1fb334 DE |
262 | total_channels = g_key_file_get_integer(kf, |
263 | sections[i], keys[j], &error); | |
264 | if (!sdi || total_channels < 0 || error) { | |
d386a52f BV |
265 | ret = SR_ERR_DATA; |
266 | break; | |
267 | } | |
5e1fb334 DE |
268 | sr_config_set(sdi, NULL, SR_CONF_NUM_LOGIC_CHANNELS, |
269 | g_variant_new_uint64(total_channels)); | |
270 | for (k = 0; k < total_channels; k++) { | |
271 | g_snprintf(channelname, sizeof channelname, | |
272 | "%d", k); | |
273 | sr_channel_new(sdi, k, SR_CHANNEL_LOGIC, | |
274 | FALSE, channelname); | |
464d12c7 | 275 | } |
7d658874 | 276 | } else if (!strncmp(keys[j], "probe", 5)) { |
5e1fb334 DE |
277 | tmp_u64 = g_ascii_strtoull(keys[j]+5, NULL, 10); |
278 | if (!sdi || tmp_u64 == 0 || tmp_u64 > G_MAXINT) { | |
279 | ret = SR_ERR_DATA; | |
280 | break; | |
281 | } | |
282 | ch = g_slist_nth_data(sdi->channels, tmp_u64 - 1); | |
283 | if (!ch) { | |
284 | ret = SR_ERR_DATA; | |
285 | break; | |
286 | } | |
287 | val = g_key_file_get_string(kf, sections[i], | |
288 | keys[j], &error); | |
289 | if (!val) { | |
d386a52f BV |
290 | ret = SR_ERR_DATA; |
291 | break; | |
292 | } | |
fb381e4d | 293 | /* sr_session_save() */ |
6f1346fb | 294 | sr_dev_channel_name_set(ch, val); |
5e1fb334 | 295 | g_free(val); |
6f1346fb | 296 | sr_dev_channel_enable(ch, TRUE); |
7d658874 BV |
297 | } |
298 | } | |
299 | g_strfreev(keys); | |
7d658874 BV |
300 | } |
301 | } | |
302 | g_strfreev(sections); | |
303 | g_key_file_free(kf); | |
304 | ||
5e1fb334 DE |
305 | if (error) { |
306 | sr_err("Failed to parse metadata: %s", error->message); | |
307 | g_error_free(error); | |
a769b9f3 | 308 | } |
a769b9f3 BV |
309 | return ret; |
310 | } | |
311 | ||
7b870c38 | 312 | /** @} */ |