X-Git-Url: https://git.lttng.org/?p=lttng-tools.git;a=blobdiff_plain;f=src%2Fcommon%2Furi.c;h=fef21b38da19639020460a498e318165d743d6ea;hp=4838372ee9eadd0f6730af6e5d059bd45b35d11f;hb=HEAD;hpb=28fcbaeb0c451fbc4e2c289de2ce1f29522239eb

diff --git a/src/common/uri.c b/src/common/uri.c
deleted file mode 100644
index 4838372ee..000000000
--- a/src/common/uri.c
+++ /dev/null
@@ -1,648 +0,0 @@
-/*
- * Copyright (C) 2012 - David Goulet <dgoulet@efficios.com>
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License, version 2 only, as
- * published by the Free Software Foundation.
- *
- * This program 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 General Public License for
- * more details.
- *
- * You should have received a copy of the GNU General Public License along with
- * this program; if not, write to the Free Software Foundation, Inc., 51
- * Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
- */
-
-#define _GNU_SOURCE
-#include <assert.h>
-#include <arpa/inet.h>
-#include <netdb.h>
-#include <stdlib.h>
-#include <string.h>
-#include <sys/socket.h>
-
-#include <common/common.h>
-#include <common/defaults.h>
-#include <common/utils.h>
-
-#include "uri.h"
-
-enum uri_proto_code {
-	P_NET, P_NET6, P_FILE, P_TCP, P_TCP6,
-};
-
-struct uri_proto {
-	const char *name;
-	const char *leading_string;
-	enum uri_proto_code code;
-	enum lttng_proto_type type;
-	enum lttng_dst_type dtype;
-};
-
-/* Supported protocols */
-static const struct uri_proto proto_uri[] = {
-	{ .name = "file", .leading_string = "file://", .code = P_FILE, .type = 0, .dtype = LTTNG_DST_PATH },
-	{ .name = "net", .leading_string = "net://", .code = P_NET, .type = LTTNG_TCP, .dtype = LTTNG_DST_IPV4 },
-	{ .name = "net6", .leading_string = "net6://", .code = P_NET6, .type = LTTNG_TCP, .dtype = LTTNG_DST_IPV6 },
-	{ .name = "tcp", .leading_string = "tcp://", .code = P_TCP, .type = LTTNG_TCP, .dtype = LTTNG_DST_IPV4 },
-	{ .name = "tcp6", .leading_string = "tcp6://", .code = P_TCP6, .type = LTTNG_TCP, .dtype = LTTNG_DST_IPV6 },
-	/* Invalid proto marking the end of the array. */
-	{ NULL, NULL, 0, 0, 0 }
-};
-
-/*
- * Return pointer to the character in s matching one of the characters in
- * accept. If nothing is found, return pointer to the end of string (eos).
- */
-static const inline char *strpbrk_or_eos(const char *s, const char *accept)
-{
-	char *p = strpbrk(s, accept);
-	if (p == NULL) {
-		p = strchr(s, '\0');
-	}
-
-	return p;
-}
-
-
-/*
- * Validate if proto is a supported protocol from proto_uri array.
- */
-static const struct uri_proto *get_uri_proto(const char *uri_str)
-{
-	const struct uri_proto *supported = NULL;
-
-	/* Safety net */
-	if (uri_str == NULL) {
-		goto end;
-	}
-
-	for (supported = &proto_uri[0];
-			supported->leading_string != NULL; ++supported) {
-		if (strncasecmp(uri_str, supported->leading_string,
-					strlen(supported->leading_string)) == 0) {
-			goto end;
-		}
-	}
-
-	/* Proto not found */
-	return NULL;
-
-end:
-	return supported;
-}
-
-/*
- * Set network address from string into dst. Supports both IP string and
- * hostname.
- */
-static int set_ip_address(const char *addr, int af, char *dst, size_t size)
-{
-	int ret;
-	unsigned char buf[sizeof(struct in6_addr)];
-	struct hostent *record;
-
-	assert(addr);
-	assert(dst);
-
-	memset(dst, 0, size);
-
-	/* Network protocol */
-	ret = inet_pton(af, addr, buf);
-	if (ret < 1) {
-		/* We consider the dst to be an hostname or an invalid IP char */
-		record = gethostbyname2(addr, af);
-		if (record == NULL) {
-			/* At this point, the IP or the hostname is bad */
-			ERR("URI parse bad hostname %s for af %d", addr, af);
-			goto error;
-		}
-
-		/* Translate IP to string */
-		(void) inet_ntop(af, record->h_addr_list[0], dst, size);
-	} else {
-		if (size > 0) {
-			strncpy(dst, addr, size);
-			dst[size - 1] = '\0';
-		}
-	}
-
-	DBG2("IP address resolved to %s", dst);
-
-	return 0;
-
-error:
-	return -1;
-}
-
-/*
- * Set default URI attribute which is basically the given stream type and the
- * default port if none is set in the URI.
- */
-static void set_default_uri_attr(struct lttng_uri *uri,
-		enum lttng_stream_type stype)
-{
-	uri->stype = stype;
-	if (uri->dtype != LTTNG_DST_PATH && uri->port == 0) {
-		uri->port = (stype == LTTNG_STREAM_CONTROL) ?
-			DEFAULT_NETWORK_CONTROL_PORT : DEFAULT_NETWORK_DATA_PORT;
-	}
-}
-
-/*
- * Compare two URL destination.
- *
- * Return 0 is equal else is not equal.
- */
-static int compare_destination(struct lttng_uri *ctrl, struct lttng_uri *data)
-{
-	int ret;
-
-	assert(ctrl);
-	assert(data);
-
-	switch (ctrl->dtype) {
-	case LTTNG_DST_IPV4:
-		ret = strncmp(ctrl->dst.ipv4, data->dst.ipv4, sizeof(ctrl->dst.ipv4));
-		break;
-	case LTTNG_DST_IPV6:
-		ret = strncmp(ctrl->dst.ipv6, data->dst.ipv6, sizeof(ctrl->dst.ipv6));
-		break;
-	default:
-		ret = -1;
-		break;
-	}
-
-	return ret;
-}
-
-/*
- * Build a string URL from a lttng_uri object.
- */
-LTTNG_HIDDEN
-int uri_to_str_url(struct lttng_uri *uri, char *dst, size_t size)
-{
-	int ipver, ret;
-	const char *addr;
-	char proto[5], port[7];
-
-	assert(uri);
-	assert(dst);
-
-	if (uri->dtype == LTTNG_DST_PATH) {
-		ipver = 0;
-		addr = uri->dst.path;
-		(void) snprintf(proto, sizeof(proto), "file");
-		(void) snprintf(port, sizeof(port), "%s", "");
-	} else {
-		ipver = (uri->dtype == LTTNG_DST_IPV4) ? 4 : 6;
-		addr = (ipver == 4) ?  uri->dst.ipv4 : uri->dst.ipv6;
-		(void) snprintf(proto, sizeof(proto), "net%d", ipver);
-		(void) snprintf(port, sizeof(port), ":%d", uri->port);
-	}
-
-	ret = snprintf(dst, size, "%s://%s%s%s%s/%s", proto,
-			(ipver == 6) ? "[" : "", addr, (ipver == 6) ? "]" : "",
-			port, uri->subdir);
-	if (ret < 0) {
-		PERROR("snprintf uri to url");
-	}
-
-	return ret;
-}
-
-/*
- * Compare two URIs.
- *
- * Return 0 if equal else 1.
- */
-LTTNG_HIDDEN
-int uri_compare(struct lttng_uri *uri1, struct lttng_uri *uri2)
-{
-	return memcmp(uri1, uri2, sizeof(struct lttng_uri));
-}
-
-/*
- * Free URI memory.
- */
-LTTNG_HIDDEN
-void uri_free(struct lttng_uri *uri)
-{
-	free(uri);
-}
-
-/*
- * Return an allocated URI.
- */
-LTTNG_HIDDEN
-struct lttng_uri *uri_create(void)
-{
-	struct lttng_uri *uri;
-
-	uri = zmalloc(sizeof(struct lttng_uri));
-	if (uri == NULL) {
-		PERROR("zmalloc uri");
-	}
-
-	return uri;
-}
-
-/*
- * Parses a string URI to a lttng_uri. This function can potentially return
- * more than one URI in uris so the size of the array is returned and uris is
- * allocated and populated. Caller must free(3) the array.
- *
- * This function can not detect the stream type of the URI so the caller has to
- * make sure the correct type (stype) is set on the return URI(s). The default
- * port must also be set by the caller if the returned URI has its port set to
- * zero.
- *
- * NOTE: A good part of the following code was inspired from the "wget" source
- * tree from the src/url.c file and url_parse() function. Also, the
- * strpbrk_or_eos() function found above is also inspired by the same code.
- * This code was originally licensed GPLv2 so we acknolwedge the Free Software
- * Foundation here for the work and to make sure we are compliant with it.
- */
-LTTNG_HIDDEN
-ssize_t uri_parse(const char *str_uri, struct lttng_uri **uris)
-{
-	int ret, i = 0;
-	/* Size of the uris array. Default is 1 */
-	ssize_t size = 1;
-	char subdir[PATH_MAX];
-	unsigned int ctrl_port = 0;
-	unsigned int data_port = 0;
-	struct lttng_uri *tmp_uris;
-	char *addr_f = NULL;
-	const struct uri_proto *proto;
-	const char *purl, *addr_e, *addr_b, *subdir_b = NULL;
-	const char *seps = ":/\0";
-
-	/*
-	 * The first part is the protocol portion of a maximum of 5 bytes for now.
-	 * The second part is the hostname or IP address. The 255 bytes size is the
-	 * limit found in the RFC 1035 for the total length of a domain name
-	 * (https://www.ietf.org/rfc/rfc1035.txt). Finally, for the net://
-	 * protocol, two ports CAN be specified.
-	 */
-
-	DBG3("URI string: %s", str_uri);
-
-	proto = get_uri_proto(str_uri);
-	if (proto == NULL) {
-		ERR("URI parse unknown protocol %s", str_uri);
-		goto error;
-	}
-
-	purl = str_uri;
-
-	if (proto->code == P_NET || proto->code == P_NET6) {
-		/* Special case for net:// which requires two URI objects */
-		size = 2;
-	}
-
-	/* Allocate URI array */
-	tmp_uris = zmalloc(sizeof(struct lttng_uri) * size);
-	if (tmp_uris == NULL) {
-		PERROR("zmalloc uri");
-		goto error;
-	}
-
-	memset(subdir, 0, sizeof(subdir));
-	purl += strlen(proto->leading_string);
-
-	/* Copy known value to the first URI. */
-	tmp_uris[0].dtype = proto->dtype;
-	tmp_uris[0].proto = proto->type;
-
-	if (proto->code == P_FILE) {
-		if (*purl != '/') {
-			ERR("Missing destination full path.");
-			goto free_error;
-		}
-
-		strncpy(tmp_uris[0].dst.path, purl, sizeof(tmp_uris[0].dst.path));
-		tmp_uris[0].dst.path[sizeof(tmp_uris[0].dst.path) - 1] = '\0';
-		DBG3("URI file destination: %s", purl);
-		goto end;
-	}
-
-	/* Assume we are at the beginning of an address or host of some sort. */
-	addr_b = purl;
-
-	/*
-	 * Handle IPv6 address inside square brackets as mention by RFC 2732. IPv6
-	 * address that does not start AND end with brackets will be rejected even
-	 * if valid.
-	 *
-	 * proto://[<addr>]...
-	 *         ^
-	 */
-	if (*purl == '[') {
-		/* Address begins after '[' */
-		addr_b = purl + 1;
-		addr_e = strchr(addr_b, ']');
-		if (addr_e == NULL || addr_b == addr_e) {
-			ERR("Broken IPv6 address %s", addr_b);
-			goto free_error;
-		}
-
-		/* Moving parsed URL pointer after the final bracket ']' */
-		purl = addr_e + 1;
-
-		/*
-		 * The closing bracket must be followed by a seperator or NULL char.
-		 */
-		if (strchr(seps, *purl) == NULL) {
-			ERR("Unknown symbol after IPv6 address: %s", purl);
-			goto free_error;
-		}
-	} else {
-		purl = strpbrk_or_eos(purl, seps);
-		addr_e = purl;
-	}
-
-	/* Check if we at least have a char for the addr or hostname. */
-	if (addr_b == addr_e) {
-		ERR("No address or hostname detected.");
-		goto free_error;
-	}
-
-	addr_f = utils_strdupdelim(addr_b, addr_e);
-	if (addr_f == NULL) {
-		goto free_error;
-	}
-
-	/*
-	 * Detect PORT after address. The net/net6 protocol allows up to two port
-	 * so we can define the control and data port.
-	 */
-	while (*purl == ':') {
-		const char *port_b, *port_e;
-		char *port_f;
-
-		/* Update pass counter */
-		i++;
-
-		/*
-		 * Maximum of two ports is possible if P_NET/NET6. Bigger than that,
-		 * two much stuff.
-		 */
-		if ((i == 2 && (proto->code != P_NET && proto->code != P_NET6))
-				|| i > 2) {
-			break;
-		}
-
-		/*
-		 * Move parsed URL to port value.
-		 * proto://addr_host:PORT1:PORT2/foo/bar
-		 *                   ^
-		 */
-		++purl;
-		port_b = purl;
-		purl = strpbrk_or_eos(purl, seps);
-		port_e = purl;
-
-		if (port_b != port_e) {
-			int port;
-
-			port_f = utils_strdupdelim(port_b, port_e);
-			if (port_f == NULL) {
-				goto free_error;
-			}
-
-			port = atoi(port_f);
-			if (port > 0xffff || port <= 0x0) {
-				ERR("Invalid port number %d", port);
-				free(port_f);
-				goto free_error;
-			}
-			free(port_f);
-
-			if (i == 1) {
-				ctrl_port = port;
-			} else {
-				data_port = port;
-			}
-		}
-	};
-
-	/* Check for a valid subdir or trailing garbage */
-	if (*purl == '/') {
-		/*
-		 * Move to subdir value.
-		 * proto://addr_host:PORT1:PORT2/foo/bar
-		 *                               ^
-		 */
-		++purl;
-		subdir_b = purl;
-	} else if (*purl != '\0') {
-		ERR("Trailing characters not recognized: %s", purl);
-		goto free_error;
-	}
-
-	/* We have enough valid information to create URI(s) object */
-
-	/* Copy generic information */
-	tmp_uris[0].port = ctrl_port;
-
-	/* Copy subdirectory if one. */
-	if (subdir_b) {
-		strncpy(tmp_uris[0].subdir, subdir_b, sizeof(tmp_uris[0].subdir));
-		tmp_uris[0].subdir[sizeof(tmp_uris[0].subdir) - 1] = '\0';
-	}
-
-	switch (proto->code) {
-	case P_NET:
-		ret = set_ip_address(addr_f, AF_INET, tmp_uris[0].dst.ipv4,
-				sizeof(tmp_uris[0].dst.ipv4));
-		if (ret < 0) {
-			goto free_error;
-		}
-
-		memcpy(tmp_uris[1].dst.ipv4, tmp_uris[0].dst.ipv4, sizeof(tmp_uris[1].dst.ipv4));
-
-		tmp_uris[1].dtype = proto->dtype;
-		tmp_uris[1].proto = proto->type;
-		tmp_uris[1].port = data_port;
-		break;
-	case P_NET6:
-		ret = set_ip_address(addr_f, AF_INET6, tmp_uris[0].dst.ipv6,
-				sizeof(tmp_uris[0].dst.ipv6));
-		if (ret < 0) {
-			goto free_error;
-		}
-
-		memcpy(tmp_uris[1].dst.ipv6, tmp_uris[0].dst.ipv6, sizeof(tmp_uris[1].dst.ipv6));
-
-		tmp_uris[1].dtype = proto->dtype;
-		tmp_uris[1].proto = proto->type;
-		tmp_uris[1].port = data_port;
-		break;
-	case P_TCP:
-		ret = set_ip_address(addr_f, AF_INET, tmp_uris[0].dst.ipv4,
-				sizeof(tmp_uris[0].dst.ipv4));
-		if (ret < 0) {
-			goto free_error;
-		}
-		break;
-	case P_TCP6:
-		ret = set_ip_address(addr_f, AF_INET6, tmp_uris[0].dst.ipv6,
-				sizeof(tmp_uris[0].dst.ipv6));
-		if (ret < 0) {
-			goto free_error;
-		}
-		break;
-	default:
-		goto free_error;
-	}
-
-end:
-	DBG3("URI dtype: %d, proto: %d, host: %s, subdir: %s, ctrl: %d, data: %d",
-			proto->dtype, proto->type, (addr_f == NULL) ? "" : addr_f,
-			(subdir_b == NULL) ? "" : subdir_b, ctrl_port, data_port);
-
-	free(addr_f);
-
-	*uris = tmp_uris;
-	return size;
-
-free_error:
-	free(addr_f);
-	free(tmp_uris);
-error:
-	return -1;
-}
-
-/*
- * Parse a string URL and creates URI(s) returning the size of the populated
- * array.
- */
-LTTNG_HIDDEN
-ssize_t uri_parse_str_urls(const char *ctrl_url, const char *data_url,
-		struct lttng_uri **uris)
-{
-	unsigned int equal = 1, idx = 0;
-	/* Add the "file://" size to the URL maximum size */
-	char url[PATH_MAX + 7];
-	ssize_t size_ctrl = 0, size_data = 0, size;
-	struct lttng_uri *ctrl_uris = NULL, *data_uris = NULL;
-	struct lttng_uri *tmp_uris = NULL;
-
-	/* No URL(s) is allowed. This means that the consumer will be disabled. */
-	if (ctrl_url == NULL && data_url == NULL) {
-		return 0;
-	}
-
-	/* Check if URLs are equal and if so, only use the control URL */
-	if ((ctrl_url && *ctrl_url != '\0') && (data_url && *data_url != '\0')) {
-		equal = !strcmp(ctrl_url, data_url);
-	}
-
-	/*
-	 * Since we allow the str_url to be a full local filesystem path, we are
-	 * going to create a valid file:// URL if it's the case.
-	 *
-	 * Check if first character is a '/' or else reject the URL.
-	 */
-	if (ctrl_url && ctrl_url[0] == '/') {
-		int ret;
-
-		ret = snprintf(url, sizeof(url), "file://%s", ctrl_url);
-		if (ret < 0) {
-			PERROR("snprintf file url");
-			goto parse_error;
-		}
-		ctrl_url = url;
-	}
-
-	/* Parse the control URL if there is one */
-	if (ctrl_url && *ctrl_url != '\0') {
-		size_ctrl = uri_parse(ctrl_url, &ctrl_uris);
-		if (size_ctrl < 1) {
-			ERR("Unable to parse the URL %s", ctrl_url);
-			goto parse_error;
-		}
-
-		/* At this point, we know there is at least one URI in the array */
-		set_default_uri_attr(&ctrl_uris[0], LTTNG_STREAM_CONTROL);
-
-		if (ctrl_uris[0].dtype == LTTNG_DST_PATH &&
-				(data_url && *data_url != '\0')) {
-			ERR("Can not have a data URL when destination is file://");
-			goto error;
-		}
-
-		/* URL are not equal but the control URL uses a net:// protocol */
-		if (size_ctrl == 2) {
-			if (!equal) {
-				ERR("Control URL uses the net:// protocol and the data URL is "
-						"different. Not allowed.");
-				goto error;
-			} else {
-				set_default_uri_attr(&ctrl_uris[1], LTTNG_STREAM_DATA);
-				/*
-				 * The data_url and ctrl_url are equal and the ctrl_url
-				 * contains a net:// protocol so we just skip the data part.
-				 */
-				data_url = NULL;
-			}
-		}
-	}
-
-	if (data_url && *data_url != '\0') {
-		int ret;
-
-		/* We have to parse the data URL in this case */
-		size_data = uri_parse(data_url, &data_uris);
-		if (size_data < 1) {
-			ERR("Unable to parse the URL %s", data_url);
-			goto error;
-		} else if (size_data == 2) {
-			ERR("Data URL can not be set with the net[4|6]:// protocol");
-			goto error;
-		}
-
-		set_default_uri_attr(&data_uris[0], LTTNG_STREAM_DATA);
-
-		ret = compare_destination(&ctrl_uris[0], &data_uris[0]);
-		if (ret != 0) {
-			ERR("Control and data destination mismatch");
-			goto error;
-		}
-	}
-
-	/* Compute total size */
-	size = size_ctrl + size_data;
-
-	tmp_uris = zmalloc(sizeof(struct lttng_uri) * size);
-	if (tmp_uris == NULL) {
-		PERROR("zmalloc uris");
-		goto error;
-	}
-
-	if (ctrl_uris) {
-		/* It's possible the control URIs array contains more than one URI */
-		memcpy(tmp_uris, ctrl_uris, sizeof(struct lttng_uri) * size_ctrl);
-		++idx;
-		free(ctrl_uris);
-	}
-
-	if (data_uris) {
-		memcpy(&tmp_uris[idx], data_uris, sizeof(struct lttng_uri));
-		free(data_uris);
-	}
-
-	*uris = tmp_uris;
-
-	return size;
-
-error:
-	free(ctrl_uris);
-	free(data_uris);
-	free(tmp_uris);
-parse_error:
-	return -1;
-}