[lttng-tools.git] / src / lib / lttng-ctl / load.c

/*
 * Copyright (C) 2014 - David Goulet <dgoulet@efficios.com>
 *
 * This library is free software; you can redistribute it and/or modify it
 * under the terms of the GNU Lesser General Public License, version 2.1 only,
 * as published by the Free Software Foundation.
 *
 * This library is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License
 * for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this library; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 */

#define _LGPL_SOURCE
#include <assert.h>
#include <string.h>
#include <limits.h>

#include <lttng/lttng-error.h>
#include <lttng/load.h>
#include <lttng/load-internal.h>
#include <common/sessiond-comm/sessiond-comm.h>
#include <common/config/session-config.h>
#include <common/uri.h>
#include <common/macros.h>
#include <common/compat/string.h>

#include "lttng-ctl-helper.h"

struct lttng_load_session_attr *lttng_load_session_attr_create(void)
{
	return zmalloc(sizeof(struct lttng_load_session_attr));
}

static
void reset_load_session_attr_urls(struct lttng_load_session_attr *attr)
{
	free(attr->raw_override_url);
	free(attr->raw_override_path_url);
	free(attr->raw_override_ctrl_url);
	free(attr->raw_override_data_url);
	if (attr->override_attr) {
		free(attr->override_attr->path_url);
		free(attr->override_attr->ctrl_url);
		free(attr->override_attr->data_url);
	}
}

void lttng_load_session_attr_destroy(struct lttng_load_session_attr *attr)
{
	if (attr) {
		reset_load_session_attr_urls(attr);
		free(attr->override_attr);
		free(attr);
	}
}

const char *lttng_load_session_attr_get_session_name(
	struct lttng_load_session_attr *attr)
{
	const char *ret = NULL;

	if (attr && attr->session_name[0]) {
		ret = attr->session_name;
	}

	return ret;
}

const char *lttng_load_session_attr_get_input_url(
	struct lttng_load_session_attr *attr)
{
	const char *ret = NULL;

	if (attr && attr->input_url[0]) {
		ret = attr->input_url;
	}

	return ret;
}

int lttng_load_session_attr_get_overwrite(
	struct lttng_load_session_attr *attr)
{
	return attr ? attr->overwrite : -LTTNG_ERR_INVALID;
}

const char *lttng_load_session_attr_get_override_ctrl_url(
	struct lttng_load_session_attr *attr)
{
	const char *ret = NULL;

	if (attr && attr->override_attr->ctrl_url) {
		ret = attr->raw_override_ctrl_url;
	}

	return ret;
}

const char *lttng_load_session_attr_get_override_data_url(
	struct lttng_load_session_attr *attr)
{
	const char *ret = NULL;

	if (attr && attr->override_attr->data_url) {
		ret = attr->raw_override_data_url;
	}

	return ret;
}

const char *lttng_load_session_attr_get_override_url(
		struct lttng_load_session_attr *attr)
{
	const char *ret = NULL;

	if (attr && (attr->override_attr->path_url ||
		(attr->override_attr->ctrl_url &&
		 attr->override_attr->data_url))) {
		ret = attr->raw_override_url;
	}

	return ret;
}

int lttng_load_session_attr_set_session_name(
	struct lttng_load_session_attr *attr, const char *session_name)
{
	int ret = 0;

	if (!attr) {
		ret = -LTTNG_ERR_INVALID;
		goto error;
	}

	if (session_name) {
		size_t len;

		len = strlen(session_name);
		if (len >= LTTNG_NAME_MAX) {
			ret = -LTTNG_ERR_INVALID;
			goto error;
		}

		strncpy(attr->session_name, session_name, len);
	} else {
		attr->session_name[0] = '\0';
	}
error:
	return ret;
}

int lttng_load_session_attr_set_input_url(
	struct lttng_load_session_attr *attr, const char *url)
{
	int ret = 0;
	size_t len;
	ssize_t size;
	struct lttng_uri *uris = NULL;

	if (!attr) {
		ret = -LTTNG_ERR_INVALID;
		goto error;
	}

	if (!url) {
		attr->input_url[0] = '\0';
		ret = 0;
		goto end;
	}

	len = strlen(url);
	if (len >= PATH_MAX) {
		ret = -LTTNG_ERR_INVALID;
		goto error;
	}

	size = uri_parse_str_urls(url, NULL, &uris);
	if (size <= 0 || uris[0].dtype != LTTNG_DST_PATH) {
		ret = -LTTNG_ERR_INVALID;
		goto error;
	}

	/* Copy string plus the NULL terminated byte. */
	lttng_ctl_copy_string(attr->input_url, uris[0].dst.path,
			sizeof(attr->input_url));

end:
error:
	free(uris);
	return ret;
}

int lttng_load_session_attr_set_overwrite(
	struct lttng_load_session_attr *attr, int overwrite)
{
	int ret = 0;

	if (!attr) {
		ret = -LTTNG_ERR_INVALID;
		goto end;
	}

	attr->overwrite = !!overwrite;
end:
	return ret;
}

int lttng_load_session_attr_set_override_ctrl_url(
	struct lttng_load_session_attr *attr, const char *url)
{
	int ret = 0;
	ssize_t ret_size;
	struct lttng_uri *uri = NULL;
	char *url_str = NULL;
	char *raw_str = NULL;

	if (!attr) {
		ret = -LTTNG_ERR_INVALID;
		goto end;
	}

	if (!attr->override_attr) {
		attr->override_attr = zmalloc(
			sizeof(struct config_load_session_override_attr));
		if (!attr->override_attr) {
			ret = -LTTNG_ERR_NOMEM;
			goto end;
		}
	}

	if (attr->override_attr->path_url) {
		/*
		 * Setting a ctrl override after a path override makes no sense.
		 */
		ret = -LTTNG_ERR_INVALID;
		goto end;
	}

	/*
	 * FIXME: uri_parse should be able to take as parameter the protocol
	 * type to validate "url". For now only check the parsing goes through;
	 * it will fail later on.
	 */
	ret_size = uri_parse(url, &uri);
	if (ret_size < 0) {
		ret = -LTTNG_ERR_INVALID;
		goto end;
	}

	if (uri[0].port == 0) {
		uri[0].port = DEFAULT_NETWORK_CONTROL_PORT;
	}

	url_str = zmalloc(PATH_MAX);
	if (!url_str) {
		/* FIXME: return valid error */
		ret = -LTTNG_ERR_NOMEM;
		goto end;
	}

	ret = uri_to_str_url(&uri[0], url_str, PATH_MAX);
	if (ret < 0) {
		ret = -LTTNG_ERR_INVALID;
		goto end;
	}
	ret = 0;

	raw_str = lttng_strndup(url, PATH_MAX);
	if (!raw_str) {
		ret = -LTTNG_ERR_NOMEM;
		goto end;
	}

	/* Squash old value if any */
	free(attr->override_attr->ctrl_url);
	free(attr->raw_override_ctrl_url);

	/* Populate the object */
	attr->override_attr->ctrl_url = url_str;
	attr->raw_override_ctrl_url = raw_str;

	/* Ownership passed to attr. */
	url_str = NULL;
	raw_str = NULL;

end:
	free(raw_str);
	free(url_str);
	free(uri);
	return ret;
}

int lttng_load_session_attr_set_override_data_url(
	struct lttng_load_session_attr *attr, const char *url)
{
	int ret = 0;
	ssize_t ret_size;
	struct lttng_uri *uri = NULL;
	char *url_str = NULL;
	char *raw_str = NULL;

	if (!attr) {
		ret = -LTTNG_ERR_INVALID;
		goto end;
	}

	if (!attr->override_attr) {
		attr->override_attr = zmalloc(
			sizeof(struct config_load_session_override_attr));
		if (!attr->override_attr) {
			ret = -LTTNG_ERR_NOMEM;
			goto end;
		}
	}

	if (attr->override_attr->path_url) {
		/*
		 * Setting a data override after a path override makes no sense.
		 */
		ret = -LTTNG_ERR_INVALID;
		goto end;
	}

	/*
	 * FIXME: uri_parse should be able to take as parameter the protocol
	 * type to validate "url". For now only check the parsing goes through;
	 * it will fail later on.
	 */
	ret_size = uri_parse(url, &uri);
	if (ret_size < 0) {
		ret = -LTTNG_ERR_INVALID;
		goto end;
	}

	if (uri[0].port == 0) {
		uri[0].port = DEFAULT_NETWORK_DATA_PORT;
	}

	url_str = zmalloc(PATH_MAX);
	if (!url_str) {
		ret = -LTTNG_ERR_NOMEM;
		goto end;
	}

	ret = uri_to_str_url(&uri[0], url_str, PATH_MAX);
	if (ret < 0) {
		ret = -LTTNG_ERR_INVALID;
		goto end;
	}
	ret = 0;

	raw_str = lttng_strndup(url, PATH_MAX);
	if (!raw_str) {
		ret = -LTTNG_ERR_NOMEM;
		goto end;
	}

	/* Squash old value if any */
	free(attr->override_attr->data_url);
	free(attr->raw_override_data_url);

	/* Populate the object */
	attr->override_attr->data_url = url_str;
	attr->raw_override_data_url = raw_str;

	/* Ownership passed to attr. */
	url_str = NULL;
	raw_str = NULL;
end:
	free(raw_str);
	free(url_str);
	free(uri);
	return ret;
}

int lttng_load_session_attr_set_override_url(
		struct lttng_load_session_attr *attr, const char *url)
{
	int ret = 0;
	ssize_t ret_size;
	struct lttng_uri *uri = NULL;
	char *raw_url_str = NULL;
	char *raw_path_str = NULL;
	char *path_str = NULL;
	char *raw_ctrl_str = NULL;
	char *ctrl_str = NULL;
	char *raw_data_str = NULL;
	char *data_str = NULL;
	char buffer[PATH_MAX];

	if (!attr || !url || strlen(url) >= PATH_MAX) {
		ret = -LTTNG_ERR_INVALID;
		goto end;
	}

	if (!attr->override_attr) {
		attr->override_attr = zmalloc(
			sizeof(struct config_load_session_override_attr));
		if (!attr->override_attr) {
			ret = -LTTNG_ERR_NOMEM;
			goto end;
		}
	}

	/*
	 * FIXME: uri_parse should be able to take as parameter the protocol
	 * type to validate "url". For now only check the parsing goes through;
	 * it will fail later on.
	 */
	ret_size = uri_parse_str_urls(url, NULL, &uri);
	if (ret_size < 0 || ret_size > 2) {
		/* Unexpected URL format. */
		ret = -LTTNG_ERR_INVALID;
		goto end;
	}

	raw_url_str = lttng_strndup(url, PATH_MAX);
	if (!raw_url_str) {
		ret = -LTTNG_ERR_NOMEM;
		goto end;
	}

	/* Get path | ctrl && data string URL. */
	ret = uri_to_str_url(&uri[0], buffer, sizeof(buffer));
	if (ret < 0 || ret >= PATH_MAX) {
		ret = -LTTNG_ERR_INVALID;
		goto end;
	}
	ret = 0;

	switch (uri[0].dtype) {
	case LTTNG_DST_PATH:
		raw_path_str = lttng_strndup(buffer, PATH_MAX);
		if (!raw_path_str) {
			ret = -LTTNG_ERR_NOMEM;
			goto end;
		}

		path_str = lttng_strndup(raw_path_str, PATH_MAX);
		if (!path_str) {
			ret = -LTTNG_ERR_NOMEM;
			goto end;
		}
		break;
	case LTTNG_DST_IPV4:
	case LTTNG_DST_IPV6:
		if (ret_size != 2) {
			ret = -LTTNG_ERR_INVALID;
			goto end;
		}

		raw_ctrl_str = lttng_strndup(buffer, PATH_MAX);
		if (!raw_ctrl_str) {
			ret = -LTTNG_ERR_NOMEM;
			goto end;
		}

		ctrl_str = lttng_strndup(raw_ctrl_str, PATH_MAX);
		if (!ctrl_str) {
			ret = -LTTNG_ERR_NOMEM;
			goto end;
		}

		/* Get the data uri. */
		ret = uri_to_str_url(&uri[1], buffer, sizeof(buffer));
		if (ret < 0) {
			ret = -LTTNG_ERR_INVALID;
			goto end;
		}
		ret = 0;

		raw_data_str = lttng_strndup(buffer, PATH_MAX);
		if (!raw_data_str) {
			ret = -LTTNG_ERR_NOMEM;
			goto end;
		}

		data_str = lttng_strndup(raw_data_str, PATH_MAX);
		if (!data_str) {
			ret = -LTTNG_ERR_NOMEM;
			goto end;
		}

		break;
	default:
		ret = -LTTNG_ERR_INVALID;
		goto end;
	}

	reset_load_session_attr_urls(attr);

	attr->override_attr->path_url = path_str;
	attr->override_attr->ctrl_url = ctrl_str;
	attr->override_attr->data_url = data_str;

	attr->raw_override_url = raw_url_str;
	attr->raw_override_path_url = raw_path_str;
	attr->raw_override_ctrl_url = raw_ctrl_str;
	attr->raw_override_data_url = raw_data_str;

	/* Pass data ownership to attr. */
	raw_url_str = NULL;
	raw_path_str = NULL;
	path_str = NULL;
	raw_ctrl_str = NULL;
	ctrl_str = NULL;
	raw_data_str = NULL;
	data_str = NULL;

end:
	free(raw_path_str);
	free(path_str);
	free(raw_ctrl_str);
	free(ctrl_str);
	free(raw_data_str);
	free(data_str);
	free(raw_url_str);
	free(uri);
	return ret;
}

int lttng_load_session(struct lttng_load_session_attr *attr)
{
	int ret;
	const char *url, *session_name;

	if (!attr) {
		ret = -LTTNG_ERR_INVALID;
		goto end;
	}

	url = attr->input_url[0] != '\0' ? attr->input_url : NULL;
	session_name = attr->session_name[0] != '\0' ?
			attr->session_name : NULL;

	ret = config_load_session(url, session_name, attr->overwrite, 0,
			attr->override_attr);

end:
	return ret;
}
Commit	Line	Data
9245bd0e DG	1	/*
	2	* Copyright (C) 2014 - David Goulet <dgoulet@efficios.com>
	3	*
	4	* This library is free software; you can redistribute it and/or modify it
	5	* under the terms of the GNU Lesser General Public License, version 2.1 only,
	6	* as published by the Free Software Foundation.
	7	*
	8	* This library 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 Lesser General Public License
	11	* for more details.
	12	*
	13	* You should have received a copy of the GNU Lesser General Public License
	14	* along with this library; if not, write to the Free Software Foundation,
	15	* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
	16	*/
	17
6c1c0768	18	#define _LGPL_SOURCE
9245bd0e DG	19	#include <assert.h>
9245bd0e DG	20	#include <string.h>
a2a75fa4	21	#include <limits.h>
9245bd0e DG	22
	23	#include <lttng/lttng-error.h>
	24	#include <lttng/load.h>
	25	#include <lttng/load-internal.h>
	26	#include <common/sessiond-comm/sessiond-comm.h>
f40ef1d5	27	#include <common/config/session-config.h>
a2a75fa4 JR	28	#include <common/uri.h>
	29	#include <common/macros.h>
	30	#include <common/compat/string.h>
9245bd0e DG	31
	32	#include "lttng-ctl-helper.h"
	33
	34	struct lttng_load_session_attr *lttng_load_session_attr_create(void)
	35	{
	36	return zmalloc(sizeof(struct lttng_load_session_attr));
	37	}
	38
a2a75fa4 JR	39	static
	40	void reset_load_session_attr_urls(struct lttng_load_session_attr *attr)
	41	{
	42	free(attr->raw_override_url);
	43	free(attr->raw_override_path_url);
	44	free(attr->raw_override_ctrl_url);
	45	free(attr->raw_override_data_url);
1b08cbce JR	46	if (attr->override_attr) {
	47	free(attr->override_attr->path_url);
	48	free(attr->override_attr->ctrl_url);
	49	free(attr->override_attr->data_url);
	50	}
a2a75fa4 JR	51	}
a2a75fa4 JR	52
9245bd0e DG	53	void lttng_load_session_attr_destroy(struct lttng_load_session_attr *attr)
	54	{
	55	if (attr) {
a2a75fa4	56	reset_load_session_attr_urls(attr);
1b08cbce	57	free(attr->override_attr);
9245bd0e DG	58	free(attr);
	59	}
	60	}
	61
	62	const char *lttng_load_session_attr_get_session_name(
	63	struct lttng_load_session_attr *attr)
	64	{
	65	const char *ret = NULL;
	66
	67	if (attr && attr->session_name[0]) {
	68	ret = attr->session_name;
	69	}
	70
	71	return ret;
	72	}
	73
	74	const char *lttng_load_session_attr_get_input_url(
	75	struct lttng_load_session_attr *attr)
	76	{
	77	const char *ret = NULL;
	78
	79	if (attr && attr->input_url[0]) {
	80	ret = attr->input_url;
	81	}
	82
	83	return ret;
	84	}
	85
	86	int lttng_load_session_attr_get_overwrite(
	87	struct lttng_load_session_attr *attr)
	88	{
	89	return attr ? attr->overwrite : -LTTNG_ERR_INVALID;
	90	}
	91
a2a75fa4 JR	92	const char *lttng_load_session_attr_get_override_ctrl_url(
	93	struct lttng_load_session_attr *attr)
	94	{
	95	const char *ret = NULL;
	96
1b08cbce	97	if (attr && attr->override_attr->ctrl_url) {
a2a75fa4 JR	98	ret = attr->raw_override_ctrl_url;
	99	}
	100
	101	return ret;
	102	}
	103
	104	const char *lttng_load_session_attr_get_override_data_url(
	105	struct lttng_load_session_attr *attr)
	106	{
	107	const char *ret = NULL;
	108
1b08cbce	109	if (attr && attr->override_attr->data_url) {
a2a75fa4 JR	110	ret = attr->raw_override_data_url;
	111	}
	112
	113	return ret;
	114	}
	115
	116	const char *lttng_load_session_attr_get_override_url(
	117	struct lttng_load_session_attr *attr)
	118	{
	119	const char *ret = NULL;
	120
1b08cbce JR	121	if (attr && (attr->override_attr->path_url \|\|
	122	(attr->override_attr->ctrl_url &&
	123	attr->override_attr->data_url))) {
a2a75fa4 JR	124	ret = attr->raw_override_url;
	125	}
	126
	127	return ret;
	128	}
	129
9245bd0e DG	130	int lttng_load_session_attr_set_session_name(
	131	struct lttng_load_session_attr attr, const char session_name)
	132	{
	133	int ret = 0;
	134
	135	if (!attr) {
	136	ret = -LTTNG_ERR_INVALID;
	137	goto error;
	138	}
	139
	140	if (session_name) {
	141	size_t len;
	142
	143	len = strlen(session_name);
36d2e35d	144	if (len >= LTTNG_NAME_MAX) {
9245bd0e DG	145	ret = -LTTNG_ERR_INVALID;
	146	goto error;
	147	}
	148
	149	strncpy(attr->session_name, session_name, len);
	150	} else {
	151	attr->session_name[0] = '\0';
	152	}
	153	error:
	154	return ret;
	155	}
	156
	157	int lttng_load_session_attr_set_input_url(
	158	struct lttng_load_session_attr attr, const char url)
	159	{
	160	int ret = 0;
584e475e JR	161	size_t len;
584e475e JR	162	ssize_t size;
9245bd0e DG	163	struct lttng_uri *uris = NULL;
	164
	165	if (!attr) {
	166	ret = -LTTNG_ERR_INVALID;
	167	goto error;
	168	}
	169
	170	if (!url) {
	171	attr->input_url[0] = '\0';
	172	ret = 0;
	173	goto end;
	174	}
	175
	176	len = strlen(url);
	177	if (len >= PATH_MAX) {
	178	ret = -LTTNG_ERR_INVALID;
	179	goto error;
	180	}
	181
	182	size = uri_parse_str_urls(url, NULL, &uris);
	183	if (size <= 0 \|\| uris[0].dtype != LTTNG_DST_PATH) {
	184	ret = -LTTNG_ERR_INVALID;
	185	goto error;
	186	}
	187
	188	/* Copy string plus the NULL terminated byte. */
	189	lttng_ctl_copy_string(attr->input_url, uris[0].dst.path,
	190	sizeof(attr->input_url));
	191
	192	end:
	193	error:
	194	free(uris);
	195	return ret;
	196	}
	197
	198	int lttng_load_session_attr_set_overwrite(
	199	struct lttng_load_session_attr *attr, int overwrite)
	200	{
	201	int ret = 0;
	202
	203	if (!attr) {
	204	ret = -LTTNG_ERR_INVALID;
	205	goto end;
	206	}
	207
	208	attr->overwrite = !!overwrite;
	209	end:
	210	return ret;
	211	}
	212
a2a75fa4 JR	213	int lttng_load_session_attr_set_override_ctrl_url(
	214	struct lttng_load_session_attr attr, const char url)
	215	{
	216	int ret = 0;
	217	ssize_t ret_size;
	218	struct lttng_uri *uri = NULL;
	219	char *url_str = NULL;
	220	char *raw_str = NULL;
	221
	222	if (!attr) {
	223	ret = -LTTNG_ERR_INVALID;
	224	goto end;
	225	}
	226
1b08cbce JR	227	if (!attr->override_attr) {
	228	attr->override_attr = zmalloc(
	229	sizeof(struct config_load_session_override_attr));
	230	if (!attr->override_attr) {
	231	ret = -LTTNG_ERR_NOMEM;
	232	goto end;
	233	}
	234	}
	235
	236	if (attr->override_attr->path_url) {
a2a75fa4	237	/*
1b08cbce JR	238	* Setting a ctrl override after a path override makes no sense.
1b08cbce JR	239	*/
a2a75fa4 JR	240	ret = -LTTNG_ERR_INVALID;
	241	goto end;
	242	}
	243
	244	/*
	245	* FIXME: uri_parse should be able to take as parameter the protocol
	246	* type to validate "url". For now only check the parsing goes through;
	247	* it will fail later on.
	248	*/
	249	ret_size = uri_parse(url, &uri);
	250	if (ret_size < 0) {
	251	ret = -LTTNG_ERR_INVALID;
	252	goto end;
	253	}
	254
	255	if (uri[0].port == 0) {
	256	uri[0].port = DEFAULT_NETWORK_CONTROL_PORT;
	257	}
	258
	259	url_str = zmalloc(PATH_MAX);
	260	if (!url_str) {
	261	/* FIXME: return valid error */
	262	ret = -LTTNG_ERR_NOMEM;
	263	goto end;
	264	}
	265
	266	ret = uri_to_str_url(&uri[0], url_str, PATH_MAX);
	267	if (ret < 0) {
	268	ret = -LTTNG_ERR_INVALID;
	269	goto end;
	270	}
	271	ret = 0;
	272
	273	raw_str = lttng_strndup(url, PATH_MAX);
	274	if (!raw_str) {
	275	ret = -LTTNG_ERR_NOMEM;
	276	goto end;
	277	}
	278
	279	/* Squash old value if any */
1b08cbce	280	free(attr->override_attr->ctrl_url);
a2a75fa4 JR	281	free(attr->raw_override_ctrl_url);
	282
	283	/* Populate the object */
1b08cbce	284	attr->override_attr->ctrl_url = url_str;
a2a75fa4 JR	285	attr->raw_override_ctrl_url = raw_str;
	286
	287	/* Ownership passed to attr. */
	288	url_str = NULL;
	289	raw_str = NULL;
	290
	291	end:
	292	free(raw_str);
	293	free(url_str);
	294	free(uri);
	295	return ret;
	296	}
	297
	298	int lttng_load_session_attr_set_override_data_url(
	299	struct lttng_load_session_attr attr, const char url)
	300	{
	301	int ret = 0;
	302	ssize_t ret_size;
	303	struct lttng_uri *uri = NULL;
	304	char *url_str = NULL;
	305	char *raw_str = NULL;
	306
	307	if (!attr) {
	308	ret = -LTTNG_ERR_INVALID;
	309	goto end;
	310	}
	311
1b08cbce JR	312	if (!attr->override_attr) {
	313	attr->override_attr = zmalloc(
	314	sizeof(struct config_load_session_override_attr));
	315	if (!attr->override_attr) {
	316	ret = -LTTNG_ERR_NOMEM;
	317	goto end;
	318	}
	319	}
	320
	321	if (attr->override_attr->path_url) {
	322	/*
	323	* Setting a data override after a path override makes no sense.
	324	*/
a2a75fa4 JR	325	ret = -LTTNG_ERR_INVALID;
	326	goto end;
	327	}
	328
	329	/*
	330	* FIXME: uri_parse should be able to take as parameter the protocol
	331	* type to validate "url". For now only check the parsing goes through;
	332	* it will fail later on.
	333	*/
	334	ret_size = uri_parse(url, &uri);
	335	if (ret_size < 0) {
	336	ret = -LTTNG_ERR_INVALID;
	337	goto end;
	338	}
	339
	340	if (uri[0].port == 0) {
	341	uri[0].port = DEFAULT_NETWORK_DATA_PORT;
	342	}
	343
	344	url_str = zmalloc(PATH_MAX);
	345	if (!url_str) {
	346	ret = -LTTNG_ERR_NOMEM;
	347	goto end;
	348	}
	349
	350	ret = uri_to_str_url(&uri[0], url_str, PATH_MAX);
	351	if (ret < 0) {
	352	ret = -LTTNG_ERR_INVALID;
	353	goto end;
	354	}
	355	ret = 0;
	356
	357	raw_str = lttng_strndup(url, PATH_MAX);
	358	if (!raw_str) {
	359	ret = -LTTNG_ERR_NOMEM;
	360	goto end;
	361	}
	362
	363	/* Squash old value if any */
1b08cbce	364	free(attr->override_attr->data_url);
a2a75fa4 JR	365	free(attr->raw_override_data_url);
	366
	367	/* Populate the object */
1b08cbce	368	attr->override_attr->data_url = url_str;
a2a75fa4 JR	369	attr->raw_override_data_url = raw_str;
	370
	371	/* Ownership passed to attr. */
	372	url_str = NULL;
	373	raw_str = NULL;
	374	end:
	375	free(raw_str);
	376	free(url_str);
	377	free(uri);
	378	return ret;
	379	}
	380
	381	int lttng_load_session_attr_set_override_url(
	382	struct lttng_load_session_attr attr, const char url)
	383	{
	384	int ret = 0;
	385	ssize_t ret_size;
	386	struct lttng_uri *uri = NULL;
	387	char *raw_url_str = NULL;
	388	char *raw_path_str = NULL;
	389	char *path_str = NULL;
	390	char *raw_ctrl_str = NULL;
	391	char *ctrl_str = NULL;
	392	char *raw_data_str = NULL;
	393	char *data_str = NULL;
	394	char buffer[PATH_MAX];
	395
	396	if (!attr \|\| !url \|\| strlen(url) >= PATH_MAX) {
	397	ret = -LTTNG_ERR_INVALID;
	398	goto end;
	399	}
	400
1b08cbce JR	401	if (!attr->override_attr) {
	402	attr->override_attr = zmalloc(
	403	sizeof(struct config_load_session_override_attr));
	404	if (!attr->override_attr) {
	405	ret = -LTTNG_ERR_NOMEM;
	406	goto end;
	407	}
	408	}
	409
a2a75fa4 JR	410	/*
	411	* FIXME: uri_parse should be able to take as parameter the protocol
	412	* type to validate "url". For now only check the parsing goes through;
	413	* it will fail later on.
	414	*/
	415	ret_size = uri_parse_str_urls(url, NULL, &uri);
	416	if (ret_size < 0 \|\| ret_size > 2) {
	417	/* Unexpected URL format. */
	418	ret = -LTTNG_ERR_INVALID;
	419	goto end;
	420	}
	421
	422	raw_url_str = lttng_strndup(url, PATH_MAX);
	423	if (!raw_url_str) {
	424	ret = -LTTNG_ERR_NOMEM;
	425	goto end;
	426	}
	427
	428	/* Get path \| ctrl && data string URL. */
	429	ret = uri_to_str_url(&uri[0], buffer, sizeof(buffer));
	430	if (ret < 0 \|\| ret >= PATH_MAX) {
	431	ret = -LTTNG_ERR_INVALID;
	432	goto end;
	433	}
	434	ret = 0;
	435
	436	switch (uri[0].dtype) {
	437	case LTTNG_DST_PATH:
	438	raw_path_str = lttng_strndup(buffer, PATH_MAX);
	439	if (!raw_path_str) {
	440	ret = -LTTNG_ERR_NOMEM;
	441	goto end;
	442	}
	443
	444	path_str = lttng_strndup(raw_path_str, PATH_MAX);
	445	if (!path_str) {
	446	ret = -LTTNG_ERR_NOMEM;
	447	goto end;
	448	}
	449	break;
	450	case LTTNG_DST_IPV4:
	451	case LTTNG_DST_IPV6:
	452	if (ret_size != 2) {
	453	ret = -LTTNG_ERR_INVALID;
	454	goto end;
	455	}
	456
	457	raw_ctrl_str = lttng_strndup(buffer, PATH_MAX);
	458	if (!raw_ctrl_str) {
	459	ret = -LTTNG_ERR_NOMEM;
	460	goto end;
	461	}
	462
	463	ctrl_str = lttng_strndup(raw_ctrl_str, PATH_MAX);
	464	if (!ctrl_str) {
	465	ret = -LTTNG_ERR_NOMEM;
	466	goto end;
	467	}
	468
	469	/* Get the data uri. */
	470	ret = uri_to_str_url(&uri[1], buffer, sizeof(buffer));
	471	if (ret < 0) {
	472	ret = -LTTNG_ERR_INVALID;
	473	goto end;
474	}
475	ret = 0;
476
477	raw_data_str = lttng_strndup(buffer, PATH_MAX);
478	if (!raw_data_str) {
479	ret = -LTTNG_ERR_NOMEM;
480	goto end;
481	}
482
483	data_str = lttng_strndup(raw_data_str, PATH_MAX);
484	if (!data_str) {
485	ret = -LTTNG_ERR_NOMEM;
486	goto end;
487	}
488
489	break;
490	default:
491	ret = -LTTNG_ERR_INVALID;
492	goto end;
493	}
494
495	reset_load_session_attr_urls(attr);
496
1b08cbce JR	497	attr->override_attr->path_url = path_str;
	498	attr->override_attr->ctrl_url = ctrl_str;
	499	attr->override_attr->data_url = data_str;
a2a75fa4 JR	500
	501	attr->raw_override_url = raw_url_str;
	502	attr->raw_override_path_url = raw_path_str;
	503	attr->raw_override_ctrl_url = raw_ctrl_str;
	504	attr->raw_override_data_url = raw_data_str;
	505
	506	/* Pass data ownership to attr. */
	507	raw_url_str = NULL;
	508	raw_path_str = NULL;
	509	path_str = NULL;
	510	raw_ctrl_str = NULL;
	511	ctrl_str = NULL;
	512	raw_data_str = NULL;
	513	data_str = NULL;
	514
	515	end:
	516	free(raw_path_str);
	517	free(path_str);
	518	free(raw_ctrl_str);
	519	free(ctrl_str);
	520	free(raw_data_str);
	521	free(data_str);
	522	free(raw_url_str);
	523	free(uri);
	524	return ret;
	525	}
0d4bab5e	526
9245bd0e DG	527	int lttng_load_session(struct lttng_load_session_attr *attr)
	528	{
	529	int ret;
18e29540	530	const char url, session_name;
9245bd0e DG	531
	532	if (!attr) {
	533	ret = -LTTNG_ERR_INVALID;
	534	goto end;
	535	}
	536
18e29540 JG	537	url = attr->input_url[0] != '\0' ? attr->input_url : NULL;
	538	session_name = attr->session_name[0] != '\0' ?
	539	attr->session_name : NULL;
	540
1b08cbce JR	541	ret = config_load_session(url, session_name, attr->overwrite, 0,
1b08cbce JR	542	attr->override_attr);
9245bd0e DG	543
	544	end:
	545	return ret;
	546	}