Commit | Line | Data |
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3a5713da DG |
1 | /* |
2 | * Copyright (C) 2012 - David Goulet <dgoulet@efficios.com> | |
3 | * | |
4 | * This program is free software; you can redistribute it and/or modify it | |
5 | * under the terms of the GNU General Public License, version 2 only, as | |
6 | * published by the Free Software Foundation. | |
7 | * | |
8 | * This program is distributed in the hope that it will be useful, but WITHOUT | |
9 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
10 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
11 | * more details. | |
12 | * | |
13 | * You should have received a copy of the GNU General Public License along with | |
14 | * this program; if not, write to the Free Software Foundation, Inc., 51 | |
15 | * Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. | |
16 | */ | |
17 | ||
18 | #define _GNU_SOURCE | |
13083fa6 | 19 | #include <assert.h> |
3a5713da DG |
20 | #include <arpa/inet.h> |
21 | #include <netdb.h> | |
22 | #include <stdlib.h> | |
23 | #include <string.h> | |
24 | #include <sys/socket.h> | |
25 | ||
26 | #include <common/common.h> | |
27 | #include <common/defaults.h> | |
a4b92340 | 28 | #include <common/utils.h> |
3a5713da DG |
29 | |
30 | #include "uri.h" | |
31 | ||
32 | enum uri_proto_code { | |
33 | P_NET, P_NET6, P_FILE, P_TCP, P_TCP6, | |
34 | }; | |
35 | ||
36 | struct uri_proto { | |
a4b92340 DG |
37 | const char *name; |
38 | const char *leading_string; | |
3a5713da DG |
39 | enum uri_proto_code code; |
40 | enum lttng_proto_type type; | |
41 | enum lttng_dst_type dtype; | |
42 | }; | |
43 | ||
44 | /* Supported protocols */ | |
45 | static const struct uri_proto proto_uri[] = { | |
a4b92340 DG |
46 | { .name = "file", .leading_string = "file://", .code = P_FILE, .type = 0, .dtype = LTTNG_DST_PATH }, |
47 | { .name = "net", .leading_string = "net://", .code = P_NET, .type = LTTNG_TCP, .dtype = LTTNG_DST_IPV4 }, | |
60782118 | 48 | { .name = "net4", .leading_string = "net4://", .code = P_NET, .type = LTTNG_TCP, .dtype = LTTNG_DST_IPV4 }, |
a4b92340 DG |
49 | { .name = "net6", .leading_string = "net6://", .code = P_NET6, .type = LTTNG_TCP, .dtype = LTTNG_DST_IPV6 }, |
50 | { .name = "tcp", .leading_string = "tcp://", .code = P_TCP, .type = LTTNG_TCP, .dtype = LTTNG_DST_IPV4 }, | |
60782118 | 51 | { .name = "tcp4", .leading_string = "tcp4://", .code = P_TCP, .type = LTTNG_TCP, .dtype = LTTNG_DST_IPV4 }, |
a4b92340 DG |
52 | { .name = "tcp6", .leading_string = "tcp6://", .code = P_TCP6, .type = LTTNG_TCP, .dtype = LTTNG_DST_IPV6 }, |
53 | /* Invalid proto marking the end of the array. */ | |
54 | { NULL, NULL, 0, 0, 0 } | |
3a5713da DG |
55 | }; |
56 | ||
a4b92340 DG |
57 | /* |
58 | * Return pointer to the character in s matching one of the characters in | |
59 | * accept. If nothing is found, return pointer to the end of string (eos). | |
60 | */ | |
32dd26fb | 61 | static const inline char *strpbrk_or_eos(const char *s, const char *accept) |
a4b92340 DG |
62 | { |
63 | char *p = strpbrk(s, accept); | |
64 | if (p == NULL) { | |
65 | p = strchr(s, '\0'); | |
66 | } | |
67 | ||
68 | return p; | |
69 | } | |
70 | ||
71 | ||
3a5713da DG |
72 | /* |
73 | * Validate if proto is a supported protocol from proto_uri array. | |
74 | */ | |
a4b92340 | 75 | static const struct uri_proto *get_uri_proto(const char *uri_str) |
3a5713da | 76 | { |
a4b92340 | 77 | const struct uri_proto *supported = NULL; |
3a5713da DG |
78 | |
79 | /* Safety net */ | |
a4b92340 | 80 | if (uri_str == NULL) { |
3a5713da DG |
81 | goto end; |
82 | } | |
83 | ||
84 | for (supported = &proto_uri[0]; | |
a4b92340 DG |
85 | supported->leading_string != NULL; ++supported) { |
86 | if (strncasecmp(uri_str, supported->leading_string, | |
87 | strlen(supported->leading_string)) == 0) { | |
3a5713da DG |
88 | goto end; |
89 | } | |
90 | } | |
91 | ||
92 | /* Proto not found */ | |
93 | return NULL; | |
94 | ||
95 | end: | |
96 | return supported; | |
97 | } | |
98 | ||
00e2e675 DG |
99 | /* |
100 | * Set network address from string into dst. Supports both IP string and | |
101 | * hostname. | |
102 | */ | |
103 | static int set_ip_address(const char *addr, int af, char *dst, size_t size) | |
104 | { | |
105 | int ret; | |
106 | unsigned char buf[sizeof(struct in6_addr)]; | |
107 | struct hostent *record; | |
108 | ||
13083fa6 DG |
109 | assert(addr); |
110 | assert(dst); | |
111 | ||
112 | memset(dst, 0, size); | |
113 | ||
00e2e675 DG |
114 | /* Network protocol */ |
115 | ret = inet_pton(af, addr, buf); | |
116 | if (ret < 1) { | |
117 | /* We consider the dst to be an hostname or an invalid IP char */ | |
118 | record = gethostbyname2(addr, af); | |
119 | if (record == NULL) { | |
120 | /* At this point, the IP or the hostname is bad */ | |
b3e12287 | 121 | ERR("URI parse bad hostname %s for af %d", addr, af); |
00e2e675 DG |
122 | goto error; |
123 | } | |
124 | ||
125 | /* Translate IP to string */ | |
126 | (void) inet_ntop(af, record->h_addr_list[0], dst, size); | |
127 | } else { | |
13083fa6 DG |
128 | if (size > 0) { |
129 | strncpy(dst, addr, size); | |
130 | dst[size - 1] = '\0'; | |
131 | } | |
00e2e675 DG |
132 | } |
133 | ||
a4b92340 DG |
134 | DBG2("IP address resolved to %s", dst); |
135 | ||
00e2e675 DG |
136 | return 0; |
137 | ||
138 | error: | |
139 | return -1; | |
140 | } | |
141 | ||
bc894455 DG |
142 | /* |
143 | * Set default URI attribute which is basically the given stream type and the | |
144 | * default port if none is set in the URI. | |
145 | */ | |
146 | static void set_default_uri_attr(struct lttng_uri *uri, | |
147 | enum lttng_stream_type stype) | |
148 | { | |
149 | uri->stype = stype; | |
150 | if (uri->dtype != LTTNG_DST_PATH && uri->port == 0) { | |
151 | uri->port = (stype == LTTNG_STREAM_CONTROL) ? | |
152 | DEFAULT_NETWORK_CONTROL_PORT : DEFAULT_NETWORK_DATA_PORT; | |
153 | } | |
154 | } | |
155 | ||
156 | /* | |
157 | * Compare two URL destination. | |
158 | * | |
159 | * Return 0 is equal else is not equal. | |
160 | */ | |
161 | static int compare_destination(struct lttng_uri *ctrl, struct lttng_uri *data) | |
162 | { | |
163 | int ret; | |
164 | ||
165 | assert(ctrl); | |
166 | assert(data); | |
167 | ||
168 | switch (ctrl->dtype) { | |
169 | case LTTNG_DST_IPV4: | |
170 | ret = strncmp(ctrl->dst.ipv4, data->dst.ipv4, sizeof(ctrl->dst.ipv4)); | |
171 | break; | |
172 | case LTTNG_DST_IPV6: | |
173 | ret = strncmp(ctrl->dst.ipv6, data->dst.ipv6, sizeof(ctrl->dst.ipv6)); | |
174 | break; | |
175 | default: | |
176 | ret = -1; | |
177 | break; | |
178 | } | |
179 | ||
180 | return ret; | |
181 | } | |
182 | ||
ad20f474 DG |
183 | /* |
184 | * Build a string URL from a lttng_uri object. | |
185 | */ | |
90e535ef | 186 | LTTNG_HIDDEN |
ad20f474 DG |
187 | int uri_to_str_url(struct lttng_uri *uri, char *dst, size_t size) |
188 | { | |
189 | int ipver, ret; | |
190 | const char *addr; | |
07b86b52 | 191 | char proto[5], port[7]; |
ad20f474 DG |
192 | |
193 | assert(uri); | |
194 | assert(dst); | |
195 | ||
196 | if (uri->dtype == LTTNG_DST_PATH) { | |
197 | ipver = 0; | |
198 | addr = uri->dst.path; | |
28fcbaeb JD |
199 | (void) snprintf(proto, sizeof(proto), "file"); |
200 | (void) snprintf(port, sizeof(port), "%s", ""); | |
ad20f474 DG |
201 | } else { |
202 | ipver = (uri->dtype == LTTNG_DST_IPV4) ? 4 : 6; | |
203 | addr = (ipver == 4) ? uri->dst.ipv4 : uri->dst.ipv6; | |
b664f89a | 204 | (void) snprintf(proto, sizeof(proto), "tcp%d", ipver); |
28fcbaeb | 205 | (void) snprintf(port, sizeof(port), ":%d", uri->port); |
ad20f474 DG |
206 | } |
207 | ||
208 | ret = snprintf(dst, size, "%s://%s%s%s%s/%s", proto, | |
209 | (ipver == 6) ? "[" : "", addr, (ipver == 6) ? "]" : "", | |
210 | port, uri->subdir); | |
211 | if (ret < 0) { | |
212 | PERROR("snprintf uri to url"); | |
213 | } | |
214 | ||
215 | return ret; | |
216 | } | |
217 | ||
3a5713da DG |
218 | /* |
219 | * Compare two URIs. | |
220 | * | |
221 | * Return 0 if equal else 1. | |
222 | */ | |
90e535ef | 223 | LTTNG_HIDDEN |
3a5713da DG |
224 | int uri_compare(struct lttng_uri *uri1, struct lttng_uri *uri2) |
225 | { | |
226 | return memcmp(uri1, uri2, sizeof(struct lttng_uri)); | |
227 | } | |
228 | ||
229 | /* | |
230 | * Free URI memory. | |
231 | */ | |
90e535ef | 232 | LTTNG_HIDDEN |
3a5713da DG |
233 | void uri_free(struct lttng_uri *uri) |
234 | { | |
0e428499 | 235 | free(uri); |
3a5713da DG |
236 | } |
237 | ||
238 | /* | |
239 | * Return an allocated URI. | |
240 | */ | |
90e535ef | 241 | LTTNG_HIDDEN |
3a5713da DG |
242 | struct lttng_uri *uri_create(void) |
243 | { | |
244 | struct lttng_uri *uri; | |
245 | ||
246 | uri = zmalloc(sizeof(struct lttng_uri)); | |
247 | if (uri == NULL) { | |
248 | PERROR("zmalloc uri"); | |
249 | } | |
250 | ||
251 | return uri; | |
252 | } | |
253 | ||
00e2e675 DG |
254 | /* |
255 | * Parses a string URI to a lttng_uri. This function can potentially return | |
256 | * more than one URI in uris so the size of the array is returned and uris is | |
257 | * allocated and populated. Caller must free(3) the array. | |
258 | * | |
259 | * This function can not detect the stream type of the URI so the caller has to | |
260 | * make sure the correct type (stype) is set on the return URI(s). The default | |
261 | * port must also be set by the caller if the returned URI has its port set to | |
262 | * zero. | |
a4b92340 DG |
263 | * |
264 | * NOTE: A good part of the following code was inspired from the "wget" source | |
265 | * tree from the src/url.c file and url_parse() function. Also, the | |
266 | * strpbrk_or_eos() function found above is also inspired by the same code. | |
267 | * This code was originally licensed GPLv2 so we acknolwedge the Free Software | |
268 | * Foundation here for the work and to make sure we are compliant with it. | |
00e2e675 | 269 | */ |
90e535ef | 270 | LTTNG_HIDDEN |
3a5713da DG |
271 | ssize_t uri_parse(const char *str_uri, struct lttng_uri **uris) |
272 | { | |
a4b92340 | 273 | int ret, i = 0; |
3a5713da DG |
274 | /* Size of the uris array. Default is 1 */ |
275 | ssize_t size = 1; | |
a4b92340 | 276 | char subdir[PATH_MAX]; |
b35d8a57 DG |
277 | unsigned int ctrl_port = 0; |
278 | unsigned int data_port = 0; | |
a4b92340 DG |
279 | struct lttng_uri *tmp_uris; |
280 | char *addr_f = NULL; | |
3a5713da | 281 | const struct uri_proto *proto; |
a4b92340 DG |
282 | const char *purl, *addr_e, *addr_b, *subdir_b = NULL; |
283 | const char *seps = ":/\0"; | |
3a5713da DG |
284 | |
285 | /* | |
286 | * The first part is the protocol portion of a maximum of 5 bytes for now. | |
b35d8a57 DG |
287 | * The second part is the hostname or IP address. The 255 bytes size is the |
288 | * limit found in the RFC 1035 for the total length of a domain name | |
289 | * (https://www.ietf.org/rfc/rfc1035.txt). Finally, for the net:// | |
290 | * protocol, two ports CAN be specified. | |
3a5713da DG |
291 | */ |
292 | ||
00e2e675 | 293 | DBG3("URI string: %s", str_uri); |
3a5713da | 294 | |
a4b92340 | 295 | proto = get_uri_proto(str_uri); |
3a5713da | 296 | if (proto == NULL) { |
a4b92340 | 297 | ERR("URI parse unknown protocol %s", str_uri); |
3a5713da DG |
298 | goto error; |
299 | } | |
300 | ||
a4b92340 DG |
301 | purl = str_uri; |
302 | ||
3a5713da | 303 | if (proto->code == P_NET || proto->code == P_NET6) { |
a4b92340 | 304 | /* Special case for net:// which requires two URI objects */ |
3a5713da DG |
305 | size = 2; |
306 | } | |
307 | ||
a4b92340 DG |
308 | /* Allocate URI array */ |
309 | tmp_uris = zmalloc(sizeof(struct lttng_uri) * size); | |
310 | if (tmp_uris == NULL) { | |
311 | PERROR("zmalloc uri"); | |
312 | goto error; | |
313 | } | |
314 | ||
00e2e675 | 315 | memset(subdir, 0, sizeof(subdir)); |
a4b92340 DG |
316 | purl += strlen(proto->leading_string); |
317 | ||
318 | /* Copy known value to the first URI. */ | |
319 | tmp_uris[0].dtype = proto->dtype; | |
320 | tmp_uris[0].proto = proto->type; | |
321 | ||
322 | if (proto->code == P_FILE) { | |
323 | if (*purl != '/') { | |
324 | ERR("Missing destination full path."); | |
325 | goto free_error; | |
00e2e675 | 326 | } |
a4b92340 DG |
327 | |
328 | strncpy(tmp_uris[0].dst.path, purl, sizeof(tmp_uris[0].dst.path)); | |
329 | tmp_uris[0].dst.path[sizeof(tmp_uris[0].dst.path) - 1] = '\0'; | |
330 | DBG3("URI file destination: %s", purl); | |
331 | goto end; | |
3a5713da DG |
332 | } |
333 | ||
a4b92340 DG |
334 | /* Assume we are at the beginning of an address or host of some sort. */ |
335 | addr_b = purl; | |
3a5713da | 336 | |
a4b92340 DG |
337 | /* |
338 | * Handle IPv6 address inside square brackets as mention by RFC 2732. IPv6 | |
339 | * address that does not start AND end with brackets will be rejected even | |
340 | * if valid. | |
341 | * | |
342 | * proto://[<addr>]... | |
343 | * ^ | |
344 | */ | |
345 | if (*purl == '[') { | |
346 | /* Address begins after '[' */ | |
347 | addr_b = purl + 1; | |
348 | addr_e = strchr(addr_b, ']'); | |
349 | if (addr_e == NULL || addr_b == addr_e) { | |
350 | ERR("Broken IPv6 address %s", addr_b); | |
351 | goto free_error; | |
352 | } | |
353 | ||
354 | /* Moving parsed URL pointer after the final bracket ']' */ | |
355 | purl = addr_e + 1; | |
356 | ||
357 | /* | |
358 | * The closing bracket must be followed by a seperator or NULL char. | |
359 | */ | |
360 | if (strchr(seps, *purl) == NULL) { | |
361 | ERR("Unknown symbol after IPv6 address: %s", purl); | |
362 | goto free_error; | |
363 | } | |
364 | } else { | |
365 | purl = strpbrk_or_eos(purl, seps); | |
366 | addr_e = purl; | |
367 | } | |
368 | ||
369 | /* Check if we at least have a char for the addr or hostname. */ | |
370 | if (addr_b == addr_e) { | |
371 | ERR("No address or hostname detected."); | |
372 | goto free_error; | |
373 | } | |
374 | ||
375 | addr_f = utils_strdupdelim(addr_b, addr_e); | |
376 | if (addr_f == NULL) { | |
377 | goto free_error; | |
3a5713da DG |
378 | } |
379 | ||
a4b92340 DG |
380 | /* |
381 | * Detect PORT after address. The net/net6 protocol allows up to two port | |
382 | * so we can define the control and data port. | |
383 | */ | |
384 | while (*purl == ':') { | |
a4b92340 DG |
385 | const char *port_b, *port_e; |
386 | char *port_f; | |
387 | ||
388 | /* Update pass counter */ | |
389 | i++; | |
390 | ||
391 | /* | |
392 | * Maximum of two ports is possible if P_NET/NET6. Bigger than that, | |
393 | * two much stuff. | |
394 | */ | |
395 | if ((i == 2 && (proto->code != P_NET && proto->code != P_NET6)) | |
396 | || i > 2) { | |
397 | break; | |
398 | } | |
399 | ||
400 | /* | |
401 | * Move parsed URL to port value. | |
402 | * proto://addr_host:PORT1:PORT2/foo/bar | |
403 | * ^ | |
404 | */ | |
405 | ++purl; | |
406 | port_b = purl; | |
407 | purl = strpbrk_or_eos(purl, seps); | |
408 | port_e = purl; | |
409 | ||
410 | if (port_b != port_e) { | |
c617c0c6 MD |
411 | int port; |
412 | ||
a4b92340 DG |
413 | port_f = utils_strdupdelim(port_b, port_e); |
414 | if (port_f == NULL) { | |
415 | goto free_error; | |
416 | } | |
417 | ||
418 | port = atoi(port_f); | |
419 | if (port > 0xffff || port <= 0x0) { | |
420 | ERR("Invalid port number %d", port); | |
421 | free(port_f); | |
422 | goto free_error; | |
423 | } | |
424 | free(port_f); | |
425 | ||
426 | if (i == 1) { | |
427 | ctrl_port = port; | |
428 | } else { | |
429 | data_port = port; | |
430 | } | |
431 | } | |
432 | }; | |
433 | ||
434 | /* Check for a valid subdir or trailing garbage */ | |
435 | if (*purl == '/') { | |
436 | /* | |
437 | * Move to subdir value. | |
438 | * proto://addr_host:PORT1:PORT2/foo/bar | |
439 | * ^ | |
440 | */ | |
441 | ++purl; | |
442 | subdir_b = purl; | |
443 | } else if (*purl != '\0') { | |
444 | ERR("Trailing characters not recognized: %s", purl); | |
445 | goto free_error; | |
446 | } | |
447 | ||
448 | /* We have enough valid information to create URI(s) object */ | |
449 | ||
3a5713da | 450 | /* Copy generic information */ |
a4b92340 | 451 | tmp_uris[0].port = ctrl_port; |
3a5713da | 452 | |
a4b92340 DG |
453 | /* Copy subdirectory if one. */ |
454 | if (subdir_b) { | |
455 | strncpy(tmp_uris[0].subdir, subdir_b, sizeof(tmp_uris[0].subdir)); | |
456 | tmp_uris[0].subdir[sizeof(tmp_uris[0].subdir) - 1] = '\0'; | |
457 | } | |
3a5713da DG |
458 | |
459 | switch (proto->code) { | |
3a5713da | 460 | case P_NET: |
a4b92340 DG |
461 | ret = set_ip_address(addr_f, AF_INET, tmp_uris[0].dst.ipv4, |
462 | sizeof(tmp_uris[0].dst.ipv4)); | |
3a5713da DG |
463 | if (ret < 0) { |
464 | goto free_error; | |
465 | } | |
466 | ||
a4b92340 | 467 | memcpy(tmp_uris[1].dst.ipv4, tmp_uris[0].dst.ipv4, sizeof(tmp_uris[1].dst.ipv4)); |
3a5713da | 468 | |
a4b92340 DG |
469 | tmp_uris[1].dtype = proto->dtype; |
470 | tmp_uris[1].proto = proto->type; | |
471 | tmp_uris[1].port = data_port; | |
3a5713da DG |
472 | break; |
473 | case P_NET6: | |
a4b92340 DG |
474 | ret = set_ip_address(addr_f, AF_INET6, tmp_uris[0].dst.ipv6, |
475 | sizeof(tmp_uris[0].dst.ipv6)); | |
3a5713da DG |
476 | if (ret < 0) { |
477 | goto free_error; | |
478 | } | |
479 | ||
a4b92340 | 480 | memcpy(tmp_uris[1].dst.ipv6, tmp_uris[0].dst.ipv6, sizeof(tmp_uris[1].dst.ipv6)); |
3a5713da | 481 | |
a4b92340 DG |
482 | tmp_uris[1].dtype = proto->dtype; |
483 | tmp_uris[1].proto = proto->type; | |
484 | tmp_uris[1].port = data_port; | |
3a5713da DG |
485 | break; |
486 | case P_TCP: | |
a4b92340 DG |
487 | ret = set_ip_address(addr_f, AF_INET, tmp_uris[0].dst.ipv4, |
488 | sizeof(tmp_uris[0].dst.ipv4)); | |
3a5713da DG |
489 | if (ret < 0) { |
490 | goto free_error; | |
491 | } | |
492 | break; | |
493 | case P_TCP6: | |
a4b92340 DG |
494 | ret = set_ip_address(addr_f, AF_INET6, tmp_uris[0].dst.ipv6, |
495 | sizeof(tmp_uris[0].dst.ipv6)); | |
3a5713da DG |
496 | if (ret < 0) { |
497 | goto free_error; | |
498 | } | |
499 | break; | |
500 | default: | |
501 | goto free_error; | |
502 | } | |
503 | ||
a4b92340 DG |
504 | end: |
505 | DBG3("URI dtype: %d, proto: %d, host: %s, subdir: %s, ctrl: %d, data: %d", | |
506 | proto->dtype, proto->type, (addr_f == NULL) ? "" : addr_f, | |
507 | (subdir_b == NULL) ? "" : subdir_b, ctrl_port, data_port); | |
508 | ||
509 | free(addr_f); | |
3a5713da | 510 | |
a4b92340 | 511 | *uris = tmp_uris; |
3a5713da DG |
512 | return size; |
513 | ||
514 | free_error: | |
a4b92340 DG |
515 | free(addr_f); |
516 | free(tmp_uris); | |
3a5713da DG |
517 | error: |
518 | return -1; | |
519 | } | |
bc894455 DG |
520 | |
521 | /* | |
522 | * Parse a string URL and creates URI(s) returning the size of the populated | |
523 | * array. | |
524 | */ | |
525 | LTTNG_HIDDEN | |
526 | ssize_t uri_parse_str_urls(const char *ctrl_url, const char *data_url, | |
527 | struct lttng_uri **uris) | |
528 | { | |
529 | unsigned int equal = 1, idx = 0; | |
530 | /* Add the "file://" size to the URL maximum size */ | |
531 | char url[PATH_MAX + 7]; | |
532 | ssize_t size_ctrl = 0, size_data = 0, size; | |
533 | struct lttng_uri *ctrl_uris = NULL, *data_uris = NULL; | |
534 | struct lttng_uri *tmp_uris = NULL; | |
535 | ||
536 | /* No URL(s) is allowed. This means that the consumer will be disabled. */ | |
537 | if (ctrl_url == NULL && data_url == NULL) { | |
538 | return 0; | |
539 | } | |
540 | ||
541 | /* Check if URLs are equal and if so, only use the control URL */ | |
542 | if ((ctrl_url && *ctrl_url != '\0') && (data_url && *data_url != '\0')) { | |
543 | equal = !strcmp(ctrl_url, data_url); | |
544 | } | |
545 | ||
546 | /* | |
547 | * Since we allow the str_url to be a full local filesystem path, we are | |
548 | * going to create a valid file:// URL if it's the case. | |
549 | * | |
550 | * Check if first character is a '/' or else reject the URL. | |
551 | */ | |
552 | if (ctrl_url && ctrl_url[0] == '/') { | |
553 | int ret; | |
554 | ||
555 | ret = snprintf(url, sizeof(url), "file://%s", ctrl_url); | |
556 | if (ret < 0) { | |
557 | PERROR("snprintf file url"); | |
558 | goto parse_error; | |
559 | } | |
560 | ctrl_url = url; | |
561 | } | |
562 | ||
563 | /* Parse the control URL if there is one */ | |
564 | if (ctrl_url && *ctrl_url != '\0') { | |
565 | size_ctrl = uri_parse(ctrl_url, &ctrl_uris); | |
566 | if (size_ctrl < 1) { | |
567 | ERR("Unable to parse the URL %s", ctrl_url); | |
568 | goto parse_error; | |
569 | } | |
570 | ||
571 | /* At this point, we know there is at least one URI in the array */ | |
572 | set_default_uri_attr(&ctrl_uris[0], LTTNG_STREAM_CONTROL); | |
573 | ||
574 | if (ctrl_uris[0].dtype == LTTNG_DST_PATH && | |
575 | (data_url && *data_url != '\0')) { | |
576 | ERR("Can not have a data URL when destination is file://"); | |
577 | goto error; | |
578 | } | |
579 | ||
580 | /* URL are not equal but the control URL uses a net:// protocol */ | |
581 | if (size_ctrl == 2) { | |
582 | if (!equal) { | |
583 | ERR("Control URL uses the net:// protocol and the data URL is " | |
584 | "different. Not allowed."); | |
585 | goto error; | |
586 | } else { | |
587 | set_default_uri_attr(&ctrl_uris[1], LTTNG_STREAM_DATA); | |
588 | /* | |
589 | * The data_url and ctrl_url are equal and the ctrl_url | |
590 | * contains a net:// protocol so we just skip the data part. | |
591 | */ | |
592 | data_url = NULL; | |
593 | } | |
594 | } | |
595 | } | |
596 | ||
597 | if (data_url && *data_url != '\0') { | |
598 | int ret; | |
599 | ||
600 | /* We have to parse the data URL in this case */ | |
601 | size_data = uri_parse(data_url, &data_uris); | |
602 | if (size_data < 1) { | |
603 | ERR("Unable to parse the URL %s", data_url); | |
604 | goto error; | |
605 | } else if (size_data == 2) { | |
606 | ERR("Data URL can not be set with the net[4|6]:// protocol"); | |
607 | goto error; | |
608 | } | |
609 | ||
610 | set_default_uri_attr(&data_uris[0], LTTNG_STREAM_DATA); | |
611 | ||
612 | ret = compare_destination(&ctrl_uris[0], &data_uris[0]); | |
613 | if (ret != 0) { | |
614 | ERR("Control and data destination mismatch"); | |
615 | goto error; | |
616 | } | |
617 | } | |
618 | ||
619 | /* Compute total size */ | |
620 | size = size_ctrl + size_data; | |
621 | ||
622 | tmp_uris = zmalloc(sizeof(struct lttng_uri) * size); | |
623 | if (tmp_uris == NULL) { | |
624 | PERROR("zmalloc uris"); | |
625 | goto error; | |
626 | } | |
627 | ||
628 | if (ctrl_uris) { | |
629 | /* It's possible the control URIs array contains more than one URI */ | |
630 | memcpy(tmp_uris, ctrl_uris, sizeof(struct lttng_uri) * size_ctrl); | |
631 | ++idx; | |
632 | free(ctrl_uris); | |
633 | } | |
634 | ||
635 | if (data_uris) { | |
636 | memcpy(&tmp_uris[idx], data_uris, sizeof(struct lttng_uri)); | |
637 | free(data_uris); | |
638 | } | |
639 | ||
640 | *uris = tmp_uris; | |
641 | ||
642 | return size; | |
643 | ||
644 | error: | |
645 | free(ctrl_uris); | |
646 | free(data_uris); | |
647 | free(tmp_uris); | |
648 | parse_error: | |
649 | return -1; | |
650 | } |