Commit | Line | Data |
---|---|---|
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 | |
6c1c0768 | 19 | #define _LGPL_SOURCE |
13083fa6 | 20 | #include <assert.h> |
3a5713da DG |
21 | #include <arpa/inet.h> |
22 | #include <netdb.h> | |
23 | #include <stdlib.h> | |
24 | #include <string.h> | |
25 | #include <sys/socket.h> | |
26 | ||
27 | #include <common/common.h> | |
28 | #include <common/defaults.h> | |
a4b92340 | 29 | #include <common/utils.h> |
3a5713da DG |
30 | |
31 | #include "uri.h" | |
32 | ||
33 | enum uri_proto_code { | |
34 | P_NET, P_NET6, P_FILE, P_TCP, P_TCP6, | |
35 | }; | |
36 | ||
37 | struct uri_proto { | |
a4b92340 DG |
38 | const char *name; |
39 | const char *leading_string; | |
3a5713da DG |
40 | enum uri_proto_code code; |
41 | enum lttng_proto_type type; | |
42 | enum lttng_dst_type dtype; | |
43 | }; | |
44 | ||
45 | /* Supported protocols */ | |
46 | static const struct uri_proto proto_uri[] = { | |
a4b92340 DG |
47 | { .name = "file", .leading_string = "file://", .code = P_FILE, .type = 0, .dtype = LTTNG_DST_PATH }, |
48 | { .name = "net", .leading_string = "net://", .code = P_NET, .type = LTTNG_TCP, .dtype = LTTNG_DST_IPV4 }, | |
60782118 | 49 | { .name = "net4", .leading_string = "net4://", .code = P_NET, .type = LTTNG_TCP, .dtype = LTTNG_DST_IPV4 }, |
a4b92340 DG |
50 | { .name = "net6", .leading_string = "net6://", .code = P_NET6, .type = LTTNG_TCP, .dtype = LTTNG_DST_IPV6 }, |
51 | { .name = "tcp", .leading_string = "tcp://", .code = P_TCP, .type = LTTNG_TCP, .dtype = LTTNG_DST_IPV4 }, | |
60782118 | 52 | { .name = "tcp4", .leading_string = "tcp4://", .code = P_TCP, .type = LTTNG_TCP, .dtype = LTTNG_DST_IPV4 }, |
a4b92340 DG |
53 | { .name = "tcp6", .leading_string = "tcp6://", .code = P_TCP6, .type = LTTNG_TCP, .dtype = LTTNG_DST_IPV6 }, |
54 | /* Invalid proto marking the end of the array. */ | |
55 | { NULL, NULL, 0, 0, 0 } | |
3a5713da DG |
56 | }; |
57 | ||
a4b92340 DG |
58 | /* |
59 | * Return pointer to the character in s matching one of the characters in | |
60 | * accept. If nothing is found, return pointer to the end of string (eos). | |
61 | */ | |
32dd26fb | 62 | static const inline char *strpbrk_or_eos(const char *s, const char *accept) |
a4b92340 DG |
63 | { |
64 | char *p = strpbrk(s, accept); | |
65 | if (p == NULL) { | |
66 | p = strchr(s, '\0'); | |
67 | } | |
68 | ||
69 | return p; | |
70 | } | |
71 | ||
72 | ||
3a5713da DG |
73 | /* |
74 | * Validate if proto is a supported protocol from proto_uri array. | |
75 | */ | |
a4b92340 | 76 | static const struct uri_proto *get_uri_proto(const char *uri_str) |
3a5713da | 77 | { |
a4b92340 | 78 | const struct uri_proto *supported = NULL; |
3a5713da DG |
79 | |
80 | /* Safety net */ | |
a4b92340 | 81 | if (uri_str == NULL) { |
3a5713da DG |
82 | goto end; |
83 | } | |
84 | ||
85 | for (supported = &proto_uri[0]; | |
a4b92340 DG |
86 | supported->leading_string != NULL; ++supported) { |
87 | if (strncasecmp(uri_str, supported->leading_string, | |
88 | strlen(supported->leading_string)) == 0) { | |
3a5713da DG |
89 | goto end; |
90 | } | |
91 | } | |
92 | ||
93 | /* Proto not found */ | |
94 | return NULL; | |
95 | ||
96 | end: | |
97 | return supported; | |
98 | } | |
99 | ||
00e2e675 DG |
100 | /* |
101 | * Set network address from string into dst. Supports both IP string and | |
102 | * hostname. | |
103 | */ | |
104 | static int set_ip_address(const char *addr, int af, char *dst, size_t size) | |
105 | { | |
106 | int ret; | |
107 | unsigned char buf[sizeof(struct in6_addr)]; | |
108 | struct hostent *record; | |
109 | ||
13083fa6 DG |
110 | assert(addr); |
111 | assert(dst); | |
112 | ||
113 | memset(dst, 0, size); | |
114 | ||
00e2e675 DG |
115 | /* Network protocol */ |
116 | ret = inet_pton(af, addr, buf); | |
117 | if (ret < 1) { | |
118 | /* We consider the dst to be an hostname or an invalid IP char */ | |
119 | record = gethostbyname2(addr, af); | |
120 | if (record == NULL) { | |
121 | /* At this point, the IP or the hostname is bad */ | |
b3e12287 | 122 | ERR("URI parse bad hostname %s for af %d", addr, af); |
00e2e675 DG |
123 | goto error; |
124 | } | |
125 | ||
126 | /* Translate IP to string */ | |
127 | (void) inet_ntop(af, record->h_addr_list[0], dst, size); | |
128 | } else { | |
13083fa6 DG |
129 | if (size > 0) { |
130 | strncpy(dst, addr, size); | |
131 | dst[size - 1] = '\0'; | |
132 | } | |
00e2e675 DG |
133 | } |
134 | ||
a4b92340 DG |
135 | DBG2("IP address resolved to %s", dst); |
136 | ||
00e2e675 DG |
137 | return 0; |
138 | ||
139 | error: | |
140 | return -1; | |
141 | } | |
142 | ||
bc894455 DG |
143 | /* |
144 | * Set default URI attribute which is basically the given stream type and the | |
145 | * default port if none is set in the URI. | |
146 | */ | |
147 | static void set_default_uri_attr(struct lttng_uri *uri, | |
148 | enum lttng_stream_type stype) | |
149 | { | |
150 | uri->stype = stype; | |
151 | if (uri->dtype != LTTNG_DST_PATH && uri->port == 0) { | |
152 | uri->port = (stype == LTTNG_STREAM_CONTROL) ? | |
153 | DEFAULT_NETWORK_CONTROL_PORT : DEFAULT_NETWORK_DATA_PORT; | |
154 | } | |
155 | } | |
156 | ||
157 | /* | |
158 | * Compare two URL destination. | |
159 | * | |
160 | * Return 0 is equal else is not equal. | |
161 | */ | |
162 | static int compare_destination(struct lttng_uri *ctrl, struct lttng_uri *data) | |
163 | { | |
164 | int ret; | |
165 | ||
166 | assert(ctrl); | |
167 | assert(data); | |
168 | ||
169 | switch (ctrl->dtype) { | |
170 | case LTTNG_DST_IPV4: | |
171 | ret = strncmp(ctrl->dst.ipv4, data->dst.ipv4, sizeof(ctrl->dst.ipv4)); | |
172 | break; | |
173 | case LTTNG_DST_IPV6: | |
174 | ret = strncmp(ctrl->dst.ipv6, data->dst.ipv6, sizeof(ctrl->dst.ipv6)); | |
175 | break; | |
176 | default: | |
177 | ret = -1; | |
178 | break; | |
179 | } | |
180 | ||
181 | return ret; | |
182 | } | |
183 | ||
ad20f474 DG |
184 | /* |
185 | * Build a string URL from a lttng_uri object. | |
186 | */ | |
90e535ef | 187 | LTTNG_HIDDEN |
ad20f474 DG |
188 | int uri_to_str_url(struct lttng_uri *uri, char *dst, size_t size) |
189 | { | |
190 | int ipver, ret; | |
191 | const char *addr; | |
07b86b52 | 192 | char proto[5], port[7]; |
ad20f474 DG |
193 | |
194 | assert(uri); | |
195 | assert(dst); | |
196 | ||
197 | if (uri->dtype == LTTNG_DST_PATH) { | |
198 | ipver = 0; | |
199 | addr = uri->dst.path; | |
28fcbaeb JD |
200 | (void) snprintf(proto, sizeof(proto), "file"); |
201 | (void) snprintf(port, sizeof(port), "%s", ""); | |
ad20f474 DG |
202 | } else { |
203 | ipver = (uri->dtype == LTTNG_DST_IPV4) ? 4 : 6; | |
204 | addr = (ipver == 4) ? uri->dst.ipv4 : uri->dst.ipv6; | |
b664f89a | 205 | (void) snprintf(proto, sizeof(proto), "tcp%d", ipver); |
28fcbaeb | 206 | (void) snprintf(port, sizeof(port), ":%d", uri->port); |
ad20f474 DG |
207 | } |
208 | ||
209 | ret = snprintf(dst, size, "%s://%s%s%s%s/%s", proto, | |
210 | (ipver == 6) ? "[" : "", addr, (ipver == 6) ? "]" : "", | |
211 | port, uri->subdir); | |
212 | if (ret < 0) { | |
213 | PERROR("snprintf uri to url"); | |
214 | } | |
215 | ||
216 | return ret; | |
217 | } | |
218 | ||
3a5713da DG |
219 | /* |
220 | * Compare two URIs. | |
221 | * | |
222 | * Return 0 if equal else 1. | |
223 | */ | |
90e535ef | 224 | LTTNG_HIDDEN |
3a5713da DG |
225 | int uri_compare(struct lttng_uri *uri1, struct lttng_uri *uri2) |
226 | { | |
227 | return memcmp(uri1, uri2, sizeof(struct lttng_uri)); | |
228 | } | |
229 | ||
230 | /* | |
231 | * Free URI memory. | |
232 | */ | |
90e535ef | 233 | LTTNG_HIDDEN |
3a5713da DG |
234 | void uri_free(struct lttng_uri *uri) |
235 | { | |
0e428499 | 236 | free(uri); |
3a5713da DG |
237 | } |
238 | ||
239 | /* | |
240 | * Return an allocated URI. | |
241 | */ | |
90e535ef | 242 | LTTNG_HIDDEN |
3a5713da DG |
243 | struct lttng_uri *uri_create(void) |
244 | { | |
245 | struct lttng_uri *uri; | |
246 | ||
247 | uri = zmalloc(sizeof(struct lttng_uri)); | |
248 | if (uri == NULL) { | |
249 | PERROR("zmalloc uri"); | |
250 | } | |
251 | ||
252 | return uri; | |
253 | } | |
254 | ||
00e2e675 DG |
255 | /* |
256 | * Parses a string URI to a lttng_uri. This function can potentially return | |
257 | * more than one URI in uris so the size of the array is returned and uris is | |
258 | * allocated and populated. Caller must free(3) the array. | |
259 | * | |
260 | * This function can not detect the stream type of the URI so the caller has to | |
261 | * make sure the correct type (stype) is set on the return URI(s). The default | |
262 | * port must also be set by the caller if the returned URI has its port set to | |
263 | * zero. | |
a4b92340 DG |
264 | * |
265 | * NOTE: A good part of the following code was inspired from the "wget" source | |
266 | * tree from the src/url.c file and url_parse() function. Also, the | |
267 | * strpbrk_or_eos() function found above is also inspired by the same code. | |
268 | * This code was originally licensed GPLv2 so we acknolwedge the Free Software | |
269 | * Foundation here for the work and to make sure we are compliant with it. | |
00e2e675 | 270 | */ |
90e535ef | 271 | LTTNG_HIDDEN |
3a5713da DG |
272 | ssize_t uri_parse(const char *str_uri, struct lttng_uri **uris) |
273 | { | |
a4b92340 | 274 | int ret, i = 0; |
3a5713da DG |
275 | /* Size of the uris array. Default is 1 */ |
276 | ssize_t size = 1; | |
a4b92340 | 277 | char subdir[PATH_MAX]; |
b35d8a57 DG |
278 | unsigned int ctrl_port = 0; |
279 | unsigned int data_port = 0; | |
a4b92340 DG |
280 | struct lttng_uri *tmp_uris; |
281 | char *addr_f = NULL; | |
3a5713da | 282 | const struct uri_proto *proto; |
a4b92340 DG |
283 | const char *purl, *addr_e, *addr_b, *subdir_b = NULL; |
284 | const char *seps = ":/\0"; | |
3a5713da DG |
285 | |
286 | /* | |
287 | * The first part is the protocol portion of a maximum of 5 bytes for now. | |
b35d8a57 DG |
288 | * The second part is the hostname or IP address. The 255 bytes size is the |
289 | * limit found in the RFC 1035 for the total length of a domain name | |
290 | * (https://www.ietf.org/rfc/rfc1035.txt). Finally, for the net:// | |
291 | * protocol, two ports CAN be specified. | |
3a5713da DG |
292 | */ |
293 | ||
00e2e675 | 294 | DBG3("URI string: %s", str_uri); |
3a5713da | 295 | |
a4b92340 | 296 | proto = get_uri_proto(str_uri); |
3a5713da | 297 | if (proto == NULL) { |
a4b92340 | 298 | ERR("URI parse unknown protocol %s", str_uri); |
3a5713da DG |
299 | goto error; |
300 | } | |
301 | ||
a4b92340 DG |
302 | purl = str_uri; |
303 | ||
3a5713da | 304 | if (proto->code == P_NET || proto->code == P_NET6) { |
a4b92340 | 305 | /* Special case for net:// which requires two URI objects */ |
3a5713da DG |
306 | size = 2; |
307 | } | |
308 | ||
a4b92340 DG |
309 | /* Allocate URI array */ |
310 | tmp_uris = zmalloc(sizeof(struct lttng_uri) * size); | |
311 | if (tmp_uris == NULL) { | |
312 | PERROR("zmalloc uri"); | |
313 | goto error; | |
314 | } | |
315 | ||
00e2e675 | 316 | memset(subdir, 0, sizeof(subdir)); |
a4b92340 DG |
317 | purl += strlen(proto->leading_string); |
318 | ||
319 | /* Copy known value to the first URI. */ | |
320 | tmp_uris[0].dtype = proto->dtype; | |
321 | tmp_uris[0].proto = proto->type; | |
322 | ||
323 | if (proto->code == P_FILE) { | |
324 | if (*purl != '/') { | |
325 | ERR("Missing destination full path."); | |
326 | goto free_error; | |
00e2e675 | 327 | } |
a4b92340 DG |
328 | |
329 | strncpy(tmp_uris[0].dst.path, purl, sizeof(tmp_uris[0].dst.path)); | |
330 | tmp_uris[0].dst.path[sizeof(tmp_uris[0].dst.path) - 1] = '\0'; | |
331 | DBG3("URI file destination: %s", purl); | |
332 | goto end; | |
3a5713da DG |
333 | } |
334 | ||
a4b92340 DG |
335 | /* Assume we are at the beginning of an address or host of some sort. */ |
336 | addr_b = purl; | |
3a5713da | 337 | |
a4b92340 DG |
338 | /* |
339 | * Handle IPv6 address inside square brackets as mention by RFC 2732. IPv6 | |
340 | * address that does not start AND end with brackets will be rejected even | |
341 | * if valid. | |
342 | * | |
343 | * proto://[<addr>]... | |
344 | * ^ | |
345 | */ | |
346 | if (*purl == '[') { | |
347 | /* Address begins after '[' */ | |
348 | addr_b = purl + 1; | |
349 | addr_e = strchr(addr_b, ']'); | |
350 | if (addr_e == NULL || addr_b == addr_e) { | |
351 | ERR("Broken IPv6 address %s", addr_b); | |
352 | goto free_error; | |
353 | } | |
354 | ||
355 | /* Moving parsed URL pointer after the final bracket ']' */ | |
356 | purl = addr_e + 1; | |
357 | ||
358 | /* | |
359 | * The closing bracket must be followed by a seperator or NULL char. | |
360 | */ | |
361 | if (strchr(seps, *purl) == NULL) { | |
362 | ERR("Unknown symbol after IPv6 address: %s", purl); | |
363 | goto free_error; | |
364 | } | |
365 | } else { | |
366 | purl = strpbrk_or_eos(purl, seps); | |
367 | addr_e = purl; | |
368 | } | |
369 | ||
370 | /* Check if we at least have a char for the addr or hostname. */ | |
371 | if (addr_b == addr_e) { | |
372 | ERR("No address or hostname detected."); | |
373 | goto free_error; | |
374 | } | |
375 | ||
376 | addr_f = utils_strdupdelim(addr_b, addr_e); | |
377 | if (addr_f == NULL) { | |
378 | goto free_error; | |
3a5713da DG |
379 | } |
380 | ||
a4b92340 DG |
381 | /* |
382 | * Detect PORT after address. The net/net6 protocol allows up to two port | |
383 | * so we can define the control and data port. | |
384 | */ | |
385 | while (*purl == ':') { | |
a4b92340 DG |
386 | const char *port_b, *port_e; |
387 | char *port_f; | |
388 | ||
389 | /* Update pass counter */ | |
390 | i++; | |
391 | ||
392 | /* | |
393 | * Maximum of two ports is possible if P_NET/NET6. Bigger than that, | |
394 | * two much stuff. | |
395 | */ | |
396 | if ((i == 2 && (proto->code != P_NET && proto->code != P_NET6)) | |
397 | || i > 2) { | |
398 | break; | |
399 | } | |
400 | ||
401 | /* | |
402 | * Move parsed URL to port value. | |
403 | * proto://addr_host:PORT1:PORT2/foo/bar | |
404 | * ^ | |
405 | */ | |
406 | ++purl; | |
407 | port_b = purl; | |
408 | purl = strpbrk_or_eos(purl, seps); | |
409 | port_e = purl; | |
410 | ||
411 | if (port_b != port_e) { | |
c617c0c6 MD |
412 | int port; |
413 | ||
a4b92340 DG |
414 | port_f = utils_strdupdelim(port_b, port_e); |
415 | if (port_f == NULL) { | |
416 | goto free_error; | |
417 | } | |
418 | ||
419 | port = atoi(port_f); | |
420 | if (port > 0xffff || port <= 0x0) { | |
421 | ERR("Invalid port number %d", port); | |
422 | free(port_f); | |
423 | goto free_error; | |
424 | } | |
425 | free(port_f); | |
426 | ||
427 | if (i == 1) { | |
428 | ctrl_port = port; | |
429 | } else { | |
430 | data_port = port; | |
431 | } | |
432 | } | |
433 | }; | |
434 | ||
435 | /* Check for a valid subdir or trailing garbage */ | |
436 | if (*purl == '/') { | |
437 | /* | |
438 | * Move to subdir value. | |
439 | * proto://addr_host:PORT1:PORT2/foo/bar | |
440 | * ^ | |
441 | */ | |
442 | ++purl; | |
443 | subdir_b = purl; | |
444 | } else if (*purl != '\0') { | |
445 | ERR("Trailing characters not recognized: %s", purl); | |
446 | goto free_error; | |
447 | } | |
448 | ||
449 | /* We have enough valid information to create URI(s) object */ | |
450 | ||
3a5713da | 451 | /* Copy generic information */ |
a4b92340 | 452 | tmp_uris[0].port = ctrl_port; |
3a5713da | 453 | |
a4b92340 DG |
454 | /* Copy subdirectory if one. */ |
455 | if (subdir_b) { | |
456 | strncpy(tmp_uris[0].subdir, subdir_b, sizeof(tmp_uris[0].subdir)); | |
457 | tmp_uris[0].subdir[sizeof(tmp_uris[0].subdir) - 1] = '\0'; | |
458 | } | |
3a5713da DG |
459 | |
460 | switch (proto->code) { | |
3a5713da | 461 | case P_NET: |
a4b92340 DG |
462 | ret = set_ip_address(addr_f, AF_INET, tmp_uris[0].dst.ipv4, |
463 | sizeof(tmp_uris[0].dst.ipv4)); | |
3a5713da DG |
464 | if (ret < 0) { |
465 | goto free_error; | |
466 | } | |
467 | ||
a4b92340 | 468 | memcpy(tmp_uris[1].dst.ipv4, tmp_uris[0].dst.ipv4, sizeof(tmp_uris[1].dst.ipv4)); |
3a5713da | 469 | |
a4b92340 DG |
470 | tmp_uris[1].dtype = proto->dtype; |
471 | tmp_uris[1].proto = proto->type; | |
472 | tmp_uris[1].port = data_port; | |
3a5713da DG |
473 | break; |
474 | case P_NET6: | |
a4b92340 DG |
475 | ret = set_ip_address(addr_f, AF_INET6, tmp_uris[0].dst.ipv6, |
476 | sizeof(tmp_uris[0].dst.ipv6)); | |
3a5713da DG |
477 | if (ret < 0) { |
478 | goto free_error; | |
479 | } | |
480 | ||
a4b92340 | 481 | memcpy(tmp_uris[1].dst.ipv6, tmp_uris[0].dst.ipv6, sizeof(tmp_uris[1].dst.ipv6)); |
3a5713da | 482 | |
a4b92340 DG |
483 | tmp_uris[1].dtype = proto->dtype; |
484 | tmp_uris[1].proto = proto->type; | |
485 | tmp_uris[1].port = data_port; | |
3a5713da DG |
486 | break; |
487 | case P_TCP: | |
a4b92340 DG |
488 | ret = set_ip_address(addr_f, AF_INET, tmp_uris[0].dst.ipv4, |
489 | sizeof(tmp_uris[0].dst.ipv4)); | |
3a5713da DG |
490 | if (ret < 0) { |
491 | goto free_error; | |
492 | } | |
493 | break; | |
494 | case P_TCP6: | |
a4b92340 DG |
495 | ret = set_ip_address(addr_f, AF_INET6, tmp_uris[0].dst.ipv6, |
496 | sizeof(tmp_uris[0].dst.ipv6)); | |
3a5713da DG |
497 | if (ret < 0) { |
498 | goto free_error; | |
499 | } | |
500 | break; | |
501 | default: | |
502 | goto free_error; | |
503 | } | |
504 | ||
a4b92340 DG |
505 | end: |
506 | DBG3("URI dtype: %d, proto: %d, host: %s, subdir: %s, ctrl: %d, data: %d", | |
507 | proto->dtype, proto->type, (addr_f == NULL) ? "" : addr_f, | |
508 | (subdir_b == NULL) ? "" : subdir_b, ctrl_port, data_port); | |
509 | ||
510 | free(addr_f); | |
3a5713da | 511 | |
a4b92340 | 512 | *uris = tmp_uris; |
3a5713da DG |
513 | return size; |
514 | ||
515 | free_error: | |
a4b92340 DG |
516 | free(addr_f); |
517 | free(tmp_uris); | |
3a5713da DG |
518 | error: |
519 | return -1; | |
520 | } | |
bc894455 DG |
521 | |
522 | /* | |
523 | * Parse a string URL and creates URI(s) returning the size of the populated | |
524 | * array. | |
525 | */ | |
526 | LTTNG_HIDDEN | |
527 | ssize_t uri_parse_str_urls(const char *ctrl_url, const char *data_url, | |
528 | struct lttng_uri **uris) | |
529 | { | |
530 | unsigned int equal = 1, idx = 0; | |
531 | /* Add the "file://" size to the URL maximum size */ | |
532 | char url[PATH_MAX + 7]; | |
533 | ssize_t size_ctrl = 0, size_data = 0, size; | |
534 | struct lttng_uri *ctrl_uris = NULL, *data_uris = NULL; | |
535 | struct lttng_uri *tmp_uris = NULL; | |
536 | ||
537 | /* No URL(s) is allowed. This means that the consumer will be disabled. */ | |
538 | if (ctrl_url == NULL && data_url == NULL) { | |
539 | return 0; | |
540 | } | |
541 | ||
542 | /* Check if URLs are equal and if so, only use the control URL */ | |
543 | if ((ctrl_url && *ctrl_url != '\0') && (data_url && *data_url != '\0')) { | |
544 | equal = !strcmp(ctrl_url, data_url); | |
545 | } | |
546 | ||
547 | /* | |
548 | * Since we allow the str_url to be a full local filesystem path, we are | |
549 | * going to create a valid file:// URL if it's the case. | |
550 | * | |
551 | * Check if first character is a '/' or else reject the URL. | |
552 | */ | |
553 | if (ctrl_url && ctrl_url[0] == '/') { | |
554 | int ret; | |
555 | ||
556 | ret = snprintf(url, sizeof(url), "file://%s", ctrl_url); | |
557 | if (ret < 0) { | |
558 | PERROR("snprintf file url"); | |
559 | goto parse_error; | |
560 | } | |
561 | ctrl_url = url; | |
562 | } | |
563 | ||
564 | /* Parse the control URL if there is one */ | |
565 | if (ctrl_url && *ctrl_url != '\0') { | |
566 | size_ctrl = uri_parse(ctrl_url, &ctrl_uris); | |
567 | if (size_ctrl < 1) { | |
568 | ERR("Unable to parse the URL %s", ctrl_url); | |
569 | goto parse_error; | |
570 | } | |
571 | ||
572 | /* At this point, we know there is at least one URI in the array */ | |
573 | set_default_uri_attr(&ctrl_uris[0], LTTNG_STREAM_CONTROL); | |
574 | ||
575 | if (ctrl_uris[0].dtype == LTTNG_DST_PATH && | |
576 | (data_url && *data_url != '\0')) { | |
577 | ERR("Can not have a data URL when destination is file://"); | |
578 | goto error; | |
579 | } | |
580 | ||
581 | /* URL are not equal but the control URL uses a net:// protocol */ | |
582 | if (size_ctrl == 2) { | |
583 | if (!equal) { | |
584 | ERR("Control URL uses the net:// protocol and the data URL is " | |
585 | "different. Not allowed."); | |
586 | goto error; | |
587 | } else { | |
588 | set_default_uri_attr(&ctrl_uris[1], LTTNG_STREAM_DATA); | |
589 | /* | |
590 | * The data_url and ctrl_url are equal and the ctrl_url | |
591 | * contains a net:// protocol so we just skip the data part. | |
592 | */ | |
593 | data_url = NULL; | |
594 | } | |
595 | } | |
596 | } | |
597 | ||
598 | if (data_url && *data_url != '\0') { | |
599 | int ret; | |
600 | ||
601 | /* We have to parse the data URL in this case */ | |
602 | size_data = uri_parse(data_url, &data_uris); | |
603 | if (size_data < 1) { | |
604 | ERR("Unable to parse the URL %s", data_url); | |
605 | goto error; | |
606 | } else if (size_data == 2) { | |
607 | ERR("Data URL can not be set with the net[4|6]:// protocol"); | |
608 | goto error; | |
609 | } | |
610 | ||
611 | set_default_uri_attr(&data_uris[0], LTTNG_STREAM_DATA); | |
612 | ||
613 | ret = compare_destination(&ctrl_uris[0], &data_uris[0]); | |
614 | if (ret != 0) { | |
615 | ERR("Control and data destination mismatch"); | |
616 | goto error; | |
617 | } | |
618 | } | |
619 | ||
620 | /* Compute total size */ | |
621 | size = size_ctrl + size_data; | |
622 | ||
623 | tmp_uris = zmalloc(sizeof(struct lttng_uri) * size); | |
624 | if (tmp_uris == NULL) { | |
625 | PERROR("zmalloc uris"); | |
626 | goto error; | |
627 | } | |
628 | ||
629 | if (ctrl_uris) { | |
630 | /* It's possible the control URIs array contains more than one URI */ | |
631 | memcpy(tmp_uris, ctrl_uris, sizeof(struct lttng_uri) * size_ctrl); | |
632 | ++idx; | |
633 | free(ctrl_uris); | |
634 | } | |
635 | ||
636 | if (data_uris) { | |
637 | memcpy(&tmp_uris[idx], data_uris, sizeof(struct lttng_uri)); | |
638 | free(data_uris); | |
639 | } | |
640 | ||
641 | *uris = tmp_uris; | |
642 | ||
643 | return size; | |
644 | ||
645 | error: | |
646 | free(ctrl_uris); | |
647 | free(data_uris); | |
648 | free(tmp_uris); | |
649 | parse_error: | |
650 | return -1; | |
651 | } |