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