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 | ||
6c1c0768 | 18 | #define _LGPL_SOURCE |
13083fa6 | 19 | #include <assert.h> |
3a5713da | 20 | #include <arpa/inet.h> |
507af6fc | 21 | #include <common/compat/netdb.h> |
3a5713da DG |
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 | ||
3a5713da DG |
71 | /* |
72 | * Validate if proto is a supported protocol from proto_uri array. | |
73 | */ | |
a4b92340 | 74 | static const struct uri_proto *get_uri_proto(const char *uri_str) |
3a5713da | 75 | { |
a4b92340 | 76 | const struct uri_proto *supported = NULL; |
3a5713da DG |
77 | |
78 | /* Safety net */ | |
a4b92340 | 79 | if (uri_str == NULL) { |
3a5713da DG |
80 | goto end; |
81 | } | |
82 | ||
83 | for (supported = &proto_uri[0]; | |
a4b92340 DG |
84 | supported->leading_string != NULL; ++supported) { |
85 | if (strncasecmp(uri_str, supported->leading_string, | |
86 | strlen(supported->leading_string)) == 0) { | |
3a5713da DG |
87 | goto end; |
88 | } | |
89 | } | |
90 | ||
91 | /* Proto not found */ | |
92 | return NULL; | |
93 | ||
94 | end: | |
95 | return supported; | |
96 | } | |
97 | ||
00e2e675 DG |
98 | /* |
99 | * Set network address from string into dst. Supports both IP string and | |
100 | * hostname. | |
101 | */ | |
102 | static int set_ip_address(const char *addr, int af, char *dst, size_t size) | |
103 | { | |
104 | int ret; | |
105 | unsigned char buf[sizeof(struct in6_addr)]; | |
106 | struct hostent *record; | |
107 | ||
13083fa6 DG |
108 | assert(addr); |
109 | assert(dst); | |
110 | ||
111 | memset(dst, 0, size); | |
112 | ||
00e2e675 DG |
113 | /* Network protocol */ |
114 | ret = inet_pton(af, addr, buf); | |
115 | if (ret < 1) { | |
116 | /* We consider the dst to be an hostname or an invalid IP char */ | |
507af6fc | 117 | record = lttng_gethostbyname2(addr, af); |
00e2e675 DG |
118 | if (record == NULL) { |
119 | /* At this point, the IP or the hostname is bad */ | |
b3e12287 | 120 | ERR("URI parse bad hostname %s for af %d", addr, af); |
00e2e675 DG |
121 | goto error; |
122 | } | |
123 | ||
124 | /* Translate IP to string */ | |
125 | (void) inet_ntop(af, record->h_addr_list[0], dst, size); | |
126 | } else { | |
13083fa6 DG |
127 | if (size > 0) { |
128 | strncpy(dst, addr, size); | |
129 | dst[size - 1] = '\0'; | |
130 | } | |
00e2e675 DG |
131 | } |
132 | ||
a4b92340 DG |
133 | DBG2("IP address resolved to %s", dst); |
134 | ||
00e2e675 DG |
135 | return 0; |
136 | ||
137 | error: | |
138 | return -1; | |
139 | } | |
140 | ||
bc894455 DG |
141 | /* |
142 | * Set default URI attribute which is basically the given stream type and the | |
143 | * default port if none is set in the URI. | |
144 | */ | |
145 | static void set_default_uri_attr(struct lttng_uri *uri, | |
146 | enum lttng_stream_type stype) | |
147 | { | |
148 | uri->stype = stype; | |
149 | if (uri->dtype != LTTNG_DST_PATH && uri->port == 0) { | |
150 | uri->port = (stype == LTTNG_STREAM_CONTROL) ? | |
151 | DEFAULT_NETWORK_CONTROL_PORT : DEFAULT_NETWORK_DATA_PORT; | |
152 | } | |
153 | } | |
154 | ||
155 | /* | |
156 | * Compare two URL destination. | |
157 | * | |
158 | * Return 0 is equal else is not equal. | |
159 | */ | |
160 | static int compare_destination(struct lttng_uri *ctrl, struct lttng_uri *data) | |
161 | { | |
162 | int ret; | |
163 | ||
164 | assert(ctrl); | |
165 | assert(data); | |
166 | ||
167 | switch (ctrl->dtype) { | |
168 | case LTTNG_DST_IPV4: | |
169 | ret = strncmp(ctrl->dst.ipv4, data->dst.ipv4, sizeof(ctrl->dst.ipv4)); | |
170 | break; | |
171 | case LTTNG_DST_IPV6: | |
172 | ret = strncmp(ctrl->dst.ipv6, data->dst.ipv6, sizeof(ctrl->dst.ipv6)); | |
173 | break; | |
174 | default: | |
175 | ret = -1; | |
176 | break; | |
177 | } | |
178 | ||
179 | return ret; | |
180 | } | |
181 | ||
ad20f474 DG |
182 | /* |
183 | * Build a string URL from a lttng_uri object. | |
184 | */ | |
90e535ef | 185 | LTTNG_HIDDEN |
ad20f474 DG |
186 | int uri_to_str_url(struct lttng_uri *uri, char *dst, size_t size) |
187 | { | |
188 | int ipver, ret; | |
189 | const char *addr; | |
07b86b52 | 190 | char proto[5], port[7]; |
ad20f474 DG |
191 | |
192 | assert(uri); | |
193 | assert(dst); | |
194 | ||
195 | if (uri->dtype == LTTNG_DST_PATH) { | |
196 | ipver = 0; | |
197 | addr = uri->dst.path; | |
28fcbaeb JD |
198 | (void) snprintf(proto, sizeof(proto), "file"); |
199 | (void) snprintf(port, sizeof(port), "%s", ""); | |
ad20f474 DG |
200 | } else { |
201 | ipver = (uri->dtype == LTTNG_DST_IPV4) ? 4 : 6; | |
202 | addr = (ipver == 4) ? uri->dst.ipv4 : uri->dst.ipv6; | |
b664f89a | 203 | (void) snprintf(proto, sizeof(proto), "tcp%d", ipver); |
28fcbaeb | 204 | (void) snprintf(port, sizeof(port), ":%d", uri->port); |
ad20f474 DG |
205 | } |
206 | ||
207 | ret = snprintf(dst, size, "%s://%s%s%s%s/%s", proto, | |
208 | (ipver == 6) ? "[" : "", addr, (ipver == 6) ? "]" : "", | |
209 | port, uri->subdir); | |
210 | if (ret < 0) { | |
211 | PERROR("snprintf uri to url"); | |
212 | } | |
213 | ||
214 | return ret; | |
215 | } | |
216 | ||
3a5713da DG |
217 | /* |
218 | * Compare two URIs. | |
219 | * | |
220 | * Return 0 if equal else 1. | |
221 | */ | |
90e535ef | 222 | LTTNG_HIDDEN |
3a5713da DG |
223 | int uri_compare(struct lttng_uri *uri1, struct lttng_uri *uri2) |
224 | { | |
225 | return memcmp(uri1, uri2, sizeof(struct lttng_uri)); | |
226 | } | |
227 | ||
228 | /* | |
229 | * Free URI memory. | |
230 | */ | |
90e535ef | 231 | LTTNG_HIDDEN |
3a5713da DG |
232 | void uri_free(struct lttng_uri *uri) |
233 | { | |
0e428499 | 234 | free(uri); |
3a5713da DG |
235 | } |
236 | ||
237 | /* | |
238 | * Return an allocated URI. | |
239 | */ | |
90e535ef | 240 | LTTNG_HIDDEN |
3a5713da DG |
241 | struct lttng_uri *uri_create(void) |
242 | { | |
243 | struct lttng_uri *uri; | |
244 | ||
245 | uri = zmalloc(sizeof(struct lttng_uri)); | |
246 | if (uri == NULL) { | |
247 | PERROR("zmalloc uri"); | |
248 | } | |
249 | ||
250 | return uri; | |
251 | } | |
252 | ||
00e2e675 DG |
253 | /* |
254 | * Parses a string URI to a lttng_uri. This function can potentially return | |
255 | * more than one URI in uris so the size of the array is returned and uris is | |
256 | * allocated and populated. Caller must free(3) the array. | |
257 | * | |
258 | * This function can not detect the stream type of the URI so the caller has to | |
259 | * make sure the correct type (stype) is set on the return URI(s). The default | |
260 | * port must also be set by the caller if the returned URI has its port set to | |
261 | * zero. | |
a4b92340 DG |
262 | * |
263 | * NOTE: A good part of the following code was inspired from the "wget" source | |
264 | * tree from the src/url.c file and url_parse() function. Also, the | |
265 | * strpbrk_or_eos() function found above is also inspired by the same code. | |
266 | * This code was originally licensed GPLv2 so we acknolwedge the Free Software | |
267 | * Foundation here for the work and to make sure we are compliant with it. | |
00e2e675 | 268 | */ |
90e535ef | 269 | LTTNG_HIDDEN |
3a5713da DG |
270 | ssize_t uri_parse(const char *str_uri, struct lttng_uri **uris) |
271 | { | |
a4b92340 | 272 | int ret, i = 0; |
3a5713da DG |
273 | /* Size of the uris array. Default is 1 */ |
274 | ssize_t size = 1; | |
a4b92340 | 275 | char subdir[PATH_MAX]; |
b35d8a57 DG |
276 | unsigned int ctrl_port = 0; |
277 | unsigned int data_port = 0; | |
a4b92340 DG |
278 | struct lttng_uri *tmp_uris; |
279 | char *addr_f = NULL; | |
3a5713da | 280 | const struct uri_proto *proto; |
a4b92340 DG |
281 | const char *purl, *addr_e, *addr_b, *subdir_b = NULL; |
282 | const char *seps = ":/\0"; | |
3a5713da DG |
283 | |
284 | /* | |
285 | * The first part is the protocol portion of a maximum of 5 bytes for now. | |
b35d8a57 DG |
286 | * The second part is the hostname or IP address. The 255 bytes size is the |
287 | * limit found in the RFC 1035 for the total length of a domain name | |
288 | * (https://www.ietf.org/rfc/rfc1035.txt). Finally, for the net:// | |
289 | * protocol, two ports CAN be specified. | |
3a5713da DG |
290 | */ |
291 | ||
00e2e675 | 292 | DBG3("URI string: %s", str_uri); |
3a5713da | 293 | |
a4b92340 | 294 | proto = get_uri_proto(str_uri); |
3a5713da | 295 | if (proto == NULL) { |
a4b92340 | 296 | ERR("URI parse unknown protocol %s", str_uri); |
3a5713da DG |
297 | goto error; |
298 | } | |
299 | ||
a4b92340 DG |
300 | purl = str_uri; |
301 | ||
3a5713da | 302 | if (proto->code == P_NET || proto->code == P_NET6) { |
a4b92340 | 303 | /* Special case for net:// which requires two URI objects */ |
3a5713da DG |
304 | size = 2; |
305 | } | |
306 | ||
a4b92340 DG |
307 | /* Allocate URI array */ |
308 | tmp_uris = zmalloc(sizeof(struct lttng_uri) * size); | |
309 | if (tmp_uris == NULL) { | |
310 | PERROR("zmalloc uri"); | |
311 | goto error; | |
312 | } | |
313 | ||
00e2e675 | 314 | memset(subdir, 0, sizeof(subdir)); |
a4b92340 DG |
315 | purl += strlen(proto->leading_string); |
316 | ||
317 | /* Copy known value to the first URI. */ | |
318 | tmp_uris[0].dtype = proto->dtype; | |
319 | tmp_uris[0].proto = proto->type; | |
320 | ||
321 | if (proto->code == P_FILE) { | |
322 | if (*purl != '/') { | |
323 | ERR("Missing destination full path."); | |
324 | goto free_error; | |
00e2e675 | 325 | } |
a4b92340 DG |
326 | |
327 | strncpy(tmp_uris[0].dst.path, purl, sizeof(tmp_uris[0].dst.path)); | |
328 | tmp_uris[0].dst.path[sizeof(tmp_uris[0].dst.path) - 1] = '\0'; | |
329 | DBG3("URI file destination: %s", purl); | |
330 | goto end; | |
3a5713da DG |
331 | } |
332 | ||
a4b92340 DG |
333 | /* Assume we are at the beginning of an address or host of some sort. */ |
334 | addr_b = purl; | |
3a5713da | 335 | |
a4b92340 DG |
336 | /* |
337 | * Handle IPv6 address inside square brackets as mention by RFC 2732. IPv6 | |
338 | * address that does not start AND end with brackets will be rejected even | |
339 | * if valid. | |
340 | * | |
341 | * proto://[<addr>]... | |
342 | * ^ | |
343 | */ | |
344 | if (*purl == '[') { | |
345 | /* Address begins after '[' */ | |
346 | addr_b = purl + 1; | |
347 | addr_e = strchr(addr_b, ']'); | |
348 | if (addr_e == NULL || addr_b == addr_e) { | |
349 | ERR("Broken IPv6 address %s", addr_b); | |
350 | goto free_error; | |
351 | } | |
352 | ||
353 | /* Moving parsed URL pointer after the final bracket ']' */ | |
354 | purl = addr_e + 1; | |
355 | ||
356 | /* | |
357 | * The closing bracket must be followed by a seperator or NULL char. | |
358 | */ | |
359 | if (strchr(seps, *purl) == NULL) { | |
360 | ERR("Unknown symbol after IPv6 address: %s", purl); | |
361 | goto free_error; | |
362 | } | |
363 | } else { | |
364 | purl = strpbrk_or_eos(purl, seps); | |
365 | addr_e = purl; | |
366 | } | |
367 | ||
368 | /* Check if we at least have a char for the addr or hostname. */ | |
369 | if (addr_b == addr_e) { | |
370 | ERR("No address or hostname detected."); | |
371 | goto free_error; | |
372 | } | |
373 | ||
374 | addr_f = utils_strdupdelim(addr_b, addr_e); | |
375 | if (addr_f == NULL) { | |
376 | goto free_error; | |
3a5713da DG |
377 | } |
378 | ||
a4b92340 DG |
379 | /* |
380 | * Detect PORT after address. The net/net6 protocol allows up to two port | |
381 | * so we can define the control and data port. | |
382 | */ | |
383 | while (*purl == ':') { | |
a4b92340 DG |
384 | const char *port_b, *port_e; |
385 | char *port_f; | |
386 | ||
387 | /* Update pass counter */ | |
388 | i++; | |
389 | ||
390 | /* | |
391 | * Maximum of two ports is possible if P_NET/NET6. Bigger than that, | |
392 | * two much stuff. | |
393 | */ | |
394 | if ((i == 2 && (proto->code != P_NET && proto->code != P_NET6)) | |
395 | || i > 2) { | |
396 | break; | |
397 | } | |
398 | ||
399 | /* | |
400 | * Move parsed URL to port value. | |
401 | * proto://addr_host:PORT1:PORT2/foo/bar | |
402 | * ^ | |
403 | */ | |
404 | ++purl; | |
405 | port_b = purl; | |
406 | purl = strpbrk_or_eos(purl, seps); | |
407 | port_e = purl; | |
408 | ||
409 | if (port_b != port_e) { | |
c617c0c6 MD |
410 | int port; |
411 | ||
a4b92340 DG |
412 | port_f = utils_strdupdelim(port_b, port_e); |
413 | if (port_f == NULL) { | |
414 | goto free_error; | |
415 | } | |
416 | ||
417 | port = atoi(port_f); | |
418 | if (port > 0xffff || port <= 0x0) { | |
419 | ERR("Invalid port number %d", port); | |
420 | free(port_f); | |
421 | goto free_error; | |
422 | } | |
423 | free(port_f); | |
424 | ||
425 | if (i == 1) { | |
426 | ctrl_port = port; | |
427 | } else { | |
428 | data_port = port; | |
429 | } | |
430 | } | |
431 | }; | |
432 | ||
433 | /* Check for a valid subdir or trailing garbage */ | |
434 | if (*purl == '/') { | |
435 | /* | |
436 | * Move to subdir value. | |
437 | * proto://addr_host:PORT1:PORT2/foo/bar | |
438 | * ^ | |
439 | */ | |
440 | ++purl; | |
441 | subdir_b = purl; | |
442 | } else if (*purl != '\0') { | |
443 | ERR("Trailing characters not recognized: %s", purl); | |
444 | goto free_error; | |
445 | } | |
446 | ||
447 | /* We have enough valid information to create URI(s) object */ | |
448 | ||
3a5713da | 449 | /* Copy generic information */ |
a4b92340 | 450 | tmp_uris[0].port = ctrl_port; |
3a5713da | 451 | |
a4b92340 DG |
452 | /* Copy subdirectory if one. */ |
453 | if (subdir_b) { | |
454 | strncpy(tmp_uris[0].subdir, subdir_b, sizeof(tmp_uris[0].subdir)); | |
455 | tmp_uris[0].subdir[sizeof(tmp_uris[0].subdir) - 1] = '\0'; | |
456 | } | |
3a5713da DG |
457 | |
458 | switch (proto->code) { | |
3a5713da | 459 | case P_NET: |
a4b92340 DG |
460 | ret = set_ip_address(addr_f, AF_INET, tmp_uris[0].dst.ipv4, |
461 | sizeof(tmp_uris[0].dst.ipv4)); | |
3a5713da DG |
462 | if (ret < 0) { |
463 | goto free_error; | |
464 | } | |
465 | ||
a4b92340 | 466 | memcpy(tmp_uris[1].dst.ipv4, tmp_uris[0].dst.ipv4, sizeof(tmp_uris[1].dst.ipv4)); |
3a5713da | 467 | |
a4b92340 DG |
468 | tmp_uris[1].dtype = proto->dtype; |
469 | tmp_uris[1].proto = proto->type; | |
470 | tmp_uris[1].port = data_port; | |
3a5713da DG |
471 | break; |
472 | case P_NET6: | |
a4b92340 DG |
473 | ret = set_ip_address(addr_f, AF_INET6, tmp_uris[0].dst.ipv6, |
474 | sizeof(tmp_uris[0].dst.ipv6)); | |
3a5713da DG |
475 | if (ret < 0) { |
476 | goto free_error; | |
477 | } | |
478 | ||
a4b92340 | 479 | memcpy(tmp_uris[1].dst.ipv6, tmp_uris[0].dst.ipv6, sizeof(tmp_uris[1].dst.ipv6)); |
3a5713da | 480 | |
a4b92340 DG |
481 | tmp_uris[1].dtype = proto->dtype; |
482 | tmp_uris[1].proto = proto->type; | |
483 | tmp_uris[1].port = data_port; | |
3a5713da DG |
484 | break; |
485 | case P_TCP: | |
a4b92340 DG |
486 | ret = set_ip_address(addr_f, AF_INET, tmp_uris[0].dst.ipv4, |
487 | sizeof(tmp_uris[0].dst.ipv4)); | |
3a5713da DG |
488 | if (ret < 0) { |
489 | goto free_error; | |
490 | } | |
491 | break; | |
492 | case P_TCP6: | |
a4b92340 DG |
493 | ret = set_ip_address(addr_f, AF_INET6, tmp_uris[0].dst.ipv6, |
494 | sizeof(tmp_uris[0].dst.ipv6)); | |
3a5713da DG |
495 | if (ret < 0) { |
496 | goto free_error; | |
497 | } | |
498 | break; | |
499 | default: | |
500 | goto free_error; | |
501 | } | |
502 | ||
a4b92340 DG |
503 | end: |
504 | DBG3("URI dtype: %d, proto: %d, host: %s, subdir: %s, ctrl: %d, data: %d", | |
505 | proto->dtype, proto->type, (addr_f == NULL) ? "" : addr_f, | |
506 | (subdir_b == NULL) ? "" : subdir_b, ctrl_port, data_port); | |
507 | ||
508 | free(addr_f); | |
3a5713da | 509 | |
a4b92340 | 510 | *uris = tmp_uris; |
3a5713da DG |
511 | return size; |
512 | ||
513 | free_error: | |
a4b92340 DG |
514 | free(addr_f); |
515 | free(tmp_uris); | |
3a5713da DG |
516 | error: |
517 | return -1; | |
518 | } | |
bc894455 DG |
519 | |
520 | /* | |
521 | * Parse a string URL and creates URI(s) returning the size of the populated | |
522 | * array. | |
523 | */ | |
524 | LTTNG_HIDDEN | |
525 | ssize_t uri_parse_str_urls(const char *ctrl_url, const char *data_url, | |
526 | struct lttng_uri **uris) | |
527 | { | |
528 | unsigned int equal = 1, idx = 0; | |
529 | /* Add the "file://" size to the URL maximum size */ | |
530 | char url[PATH_MAX + 7]; | |
531 | ssize_t size_ctrl = 0, size_data = 0, size; | |
532 | struct lttng_uri *ctrl_uris = NULL, *data_uris = NULL; | |
533 | struct lttng_uri *tmp_uris = NULL; | |
534 | ||
535 | /* No URL(s) is allowed. This means that the consumer will be disabled. */ | |
536 | if (ctrl_url == NULL && data_url == NULL) { | |
537 | return 0; | |
538 | } | |
539 | ||
540 | /* Check if URLs are equal and if so, only use the control URL */ | |
541 | if ((ctrl_url && *ctrl_url != '\0') && (data_url && *data_url != '\0')) { | |
542 | equal = !strcmp(ctrl_url, data_url); | |
543 | } | |
544 | ||
545 | /* | |
546 | * Since we allow the str_url to be a full local filesystem path, we are | |
547 | * going to create a valid file:// URL if it's the case. | |
548 | * | |
549 | * Check if first character is a '/' or else reject the URL. | |
550 | */ | |
551 | if (ctrl_url && ctrl_url[0] == '/') { | |
552 | int ret; | |
553 | ||
554 | ret = snprintf(url, sizeof(url), "file://%s", ctrl_url); | |
555 | if (ret < 0) { | |
556 | PERROR("snprintf file url"); | |
557 | goto parse_error; | |
558 | } | |
559 | ctrl_url = url; | |
560 | } | |
561 | ||
562 | /* Parse the control URL if there is one */ | |
563 | if (ctrl_url && *ctrl_url != '\0') { | |
564 | size_ctrl = uri_parse(ctrl_url, &ctrl_uris); | |
565 | if (size_ctrl < 1) { | |
566 | ERR("Unable to parse the URL %s", ctrl_url); | |
567 | goto parse_error; | |
568 | } | |
569 | ||
570 | /* At this point, we know there is at least one URI in the array */ | |
571 | set_default_uri_attr(&ctrl_uris[0], LTTNG_STREAM_CONTROL); | |
572 | ||
573 | if (ctrl_uris[0].dtype == LTTNG_DST_PATH && | |
574 | (data_url && *data_url != '\0')) { | |
575 | ERR("Can not have a data URL when destination is file://"); | |
576 | goto error; | |
577 | } | |
578 | ||
579 | /* URL are not equal but the control URL uses a net:// protocol */ | |
580 | if (size_ctrl == 2) { | |
581 | if (!equal) { | |
582 | ERR("Control URL uses the net:// protocol and the data URL is " | |
583 | "different. Not allowed."); | |
584 | goto error; | |
585 | } else { | |
586 | set_default_uri_attr(&ctrl_uris[1], LTTNG_STREAM_DATA); | |
587 | /* | |
588 | * The data_url and ctrl_url are equal and the ctrl_url | |
589 | * contains a net:// protocol so we just skip the data part. | |
590 | */ | |
591 | data_url = NULL; | |
592 | } | |
593 | } | |
594 | } | |
595 | ||
596 | if (data_url && *data_url != '\0') { | |
597 | int ret; | |
598 | ||
599 | /* We have to parse the data URL in this case */ | |
600 | size_data = uri_parse(data_url, &data_uris); | |
601 | if (size_data < 1) { | |
602 | ERR("Unable to parse the URL %s", data_url); | |
603 | goto error; | |
604 | } else if (size_data == 2) { | |
605 | ERR("Data URL can not be set with the net[4|6]:// protocol"); | |
606 | goto error; | |
607 | } | |
608 | ||
609 | set_default_uri_attr(&data_uris[0], LTTNG_STREAM_DATA); | |
610 | ||
611 | ret = compare_destination(&ctrl_uris[0], &data_uris[0]); | |
612 | if (ret != 0) { | |
613 | ERR("Control and data destination mismatch"); | |
614 | goto error; | |
615 | } | |
616 | } | |
617 | ||
618 | /* Compute total size */ | |
619 | size = size_ctrl + size_data; | |
620 | ||
621 | tmp_uris = zmalloc(sizeof(struct lttng_uri) * size); | |
622 | if (tmp_uris == NULL) { | |
623 | PERROR("zmalloc uris"); | |
624 | goto error; | |
625 | } | |
626 | ||
627 | if (ctrl_uris) { | |
628 | /* It's possible the control URIs array contains more than one URI */ | |
629 | memcpy(tmp_uris, ctrl_uris, sizeof(struct lttng_uri) * size_ctrl); | |
630 | ++idx; | |
631 | free(ctrl_uris); | |
632 | } | |
633 | ||
634 | if (data_uris) { | |
635 | memcpy(&tmp_uris[idx], data_uris, sizeof(struct lttng_uri)); | |
636 | free(data_uris); | |
637 | } | |
638 | ||
639 | *uris = tmp_uris; | |
640 | ||
641 | return size; | |
642 | ||
643 | error: | |
644 | free(ctrl_uris); | |
645 | free(data_uris); | |
646 | free(tmp_uris); | |
647 | parse_error: | |
648 | return -1; | |
649 | } |