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libvirt/src/esx/esx_util.c
Matthias Bolte 5254546bba esx: Make storage pool lookup by name and UUID more robust 
Don't rely on summary.url anymore, because its value is different
between an esx:// and vpx:// connection. Use host.mountInfo.path
instead.

Don't fallback to lookup by UUID (actually lookup by absolute path)
in esxVI_LookupDatastoreByName when lookup by name fails. Add a
seperate function for this: esxVI_LookupDatastoreByAbsolutePath
2010-08-02 22:25:15 +02:00

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/*
* esx_util.c: utility functions for the VMware ESX driver
*
* Copyright (C) 2010 Red Hat, Inc.
* Copyright (C) 2009 Matthias Bolte <matthias.bolte@googlemail.com>
* Copyright (C) 2009 Maximilian Wilhelm <max@rfc2324.org>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
*/
#include <config.h>
#include <netdb.h>
#include "internal.h"
#include "datatypes.h"
#include "qparams.h"
#include "util.h"
#include "memory.h"
#include "logging.h"
#include "uuid.h"
#include "esx_private.h"
#include "esx_util.h"
#define VIR_FROM_THIS VIR_FROM_ESX
int
esxUtil_ParseUri(esxUtil_ParsedUri **parsedUri, xmlURIPtr uri)
{
int result = -1;
struct qparam_set *queryParamSet = NULL;
struct qparam *queryParam = NULL;
int i;
int noVerify;
int autoAnswer;
char *tmp;
char *saveptr;
if (parsedUri == NULL || *parsedUri != NULL) {
ESX_VI_ERROR(VIR_ERR_INTERNAL_ERROR, "%s", _("Invalid argument"));
return -1;
}
if (VIR_ALLOC(*parsedUri) < 0) {
virReportOOMError();
return -1;
}
#ifdef HAVE_XMLURI_QUERY_RAW
queryParamSet = qparam_query_parse(uri->query_raw);
#else
queryParamSet = qparam_query_parse(uri->query);
#endif
if (queryParamSet == NULL) {
goto cleanup;
}
for (i = 0; i < queryParamSet->n; i++) {
queryParam = &queryParamSet->p[i];
if (STRCASEEQ(queryParam->name, "transport")) {
VIR_FREE((*parsedUri)->transport);
(*parsedUri)->transport = strdup(queryParam->value);
if ((*parsedUri)->transport == NULL) {
virReportOOMError();
goto cleanup;
}
if (STRNEQ((*parsedUri)->transport, "http") &&
STRNEQ((*parsedUri)->transport, "https")) {
ESX_ERROR(VIR_ERR_INVALID_ARG,
_("Query parameter 'transport' has unexpected value "
"'%s' (should be http|https)"),
(*parsedUri)->transport);
goto cleanup;
}
} else if (STRCASEEQ(queryParam->name, "vcenter")) {
VIR_FREE((*parsedUri)->vCenter);
(*parsedUri)->vCenter = strdup(queryParam->value);
if ((*parsedUri)->vCenter == NULL) {
virReportOOMError();
goto cleanup;
}
} else if (STRCASEEQ(queryParam->name, "no_verify")) {
if (virStrToLong_i(queryParam->value, NULL, 10, &noVerify) < 0 ||
(noVerify != 0 && noVerify != 1)) {
ESX_ERROR(VIR_ERR_INVALID_ARG,
_("Query parameter 'no_verify' has unexpected value "
"'%s' (should be 0 or 1)"), queryParam->value);
goto cleanup;
}
(*parsedUri)->noVerify = noVerify != 0;
} else if (STRCASEEQ(queryParam->name, "auto_answer")) {
if (virStrToLong_i(queryParam->value, NULL, 10, &autoAnswer) < 0 ||
(autoAnswer != 0 && autoAnswer != 1)) {
ESX_ERROR(VIR_ERR_INVALID_ARG,
_("Query parameter 'auto_answer' has unexpected "
"value '%s' (should be 0 or 1)"), queryParam->value);
goto cleanup;
}
(*parsedUri)->autoAnswer = autoAnswer != 0;
} else if (STRCASEEQ(queryParam->name, "proxy")) {
/* Expected format: [<type>://]<hostname>[:<port>] */
(*parsedUri)->proxy = true;
(*parsedUri)->proxy_type = CURLPROXY_HTTP;
VIR_FREE((*parsedUri)->proxy_hostname);
(*parsedUri)->proxy_port = 1080;
if ((tmp = STRSKIP(queryParam->value, "http://")) != NULL) {
(*parsedUri)->proxy_type = CURLPROXY_HTTP;
} else if ((tmp = STRSKIP(queryParam->value, "socks://")) != NULL ||
(tmp = STRSKIP(queryParam->value, "socks5://")) != NULL) {
(*parsedUri)->proxy_type = CURLPROXY_SOCKS5;
} else if ((tmp = STRSKIP(queryParam->value, "socks4://")) != NULL) {
(*parsedUri)->proxy_type = CURLPROXY_SOCKS4;
} else if ((tmp = STRSKIP(queryParam->value, "socks4a://")) != NULL) {
(*parsedUri)->proxy_type = CURLPROXY_SOCKS4A;
} else if ((tmp = strstr(queryParam->value, "://")) != NULL) {
*tmp = '\0';
ESX_ERROR(VIR_ERR_INVALID_ARG,
_("Query parameter 'proxy' contains unexpected "
"type '%s' (should be (http|socks(|4|4a|5))"),
queryParam->value);
goto cleanup;
} else {
tmp = queryParam->value;
}
(*parsedUri)->proxy_hostname = strdup(tmp);
if ((*parsedUri)->proxy_hostname == NULL) {
virReportOOMError();
goto cleanup;
}
if ((tmp = strchr((*parsedUri)->proxy_hostname, ':')) != NULL) {
if (tmp == (*parsedUri)->proxy_hostname) {
ESX_ERROR(VIR_ERR_INVALID_ARG, "%s",
_("Query parameter 'proxy' doesn't contain a "
"hostname"));
goto cleanup;
}
*tmp++ = '\0';
if (virStrToLong_i(tmp, NULL, 10,
&(*parsedUri)->proxy_port) < 0 ||
(*parsedUri)->proxy_port < 1 ||
(*parsedUri)->proxy_port > 65535) {
ESX_ERROR(VIR_ERR_INVALID_ARG,
_("Query parameter 'proxy' has unexpected port"
"value '%s' (should be [1..65535])"), tmp);
goto cleanup;
}
}
} else {
VIR_WARN("Ignoring unexpected query parameter '%s'",
queryParam->name);
}
}
/* Expected format: [/]<datacenter>/<computeresource>[/<hostsystem>] */
if (uri->path != NULL) {
tmp = strdup(uri->path);
if (tmp == NULL) {
virReportOOMError();
goto cleanup;
}
if (esxVI_String_DeepCopyValue(&(*parsedUri)->path_datacenter,
strtok_r(tmp, "/", &saveptr)) < 0 ||
esxVI_String_DeepCopyValue(&(*parsedUri)->path_computeResource,
strtok_r(NULL, "/", &saveptr)) < 0 ||
esxVI_String_DeepCopyValue(&(*parsedUri)->path_hostSystem,
strtok_r(NULL, "", &saveptr)) < 0) {
VIR_FREE(tmp);
goto cleanup;
}
VIR_FREE(tmp);
}
if ((*parsedUri)->transport == NULL) {
(*parsedUri)->transport = strdup("https");
if ((*parsedUri)->transport == NULL) {
virReportOOMError();
goto cleanup;
}
}
result = 0;
cleanup:
if (result < 0) {
esxUtil_FreeParsedUri(parsedUri);
}
if (queryParamSet != NULL) {
free_qparam_set(queryParamSet);
}
return result;
}
void
esxUtil_FreeParsedUri(esxUtil_ParsedUri **parsedUri)
{
if (parsedUri == NULL || *parsedUri == NULL) {
return;
}
VIR_FREE((*parsedUri)->transport);
VIR_FREE((*parsedUri)->vCenter);
VIR_FREE((*parsedUri)->proxy_hostname);
VIR_FREE((*parsedUri)->path_datacenter);
VIR_FREE((*parsedUri)->path_computeResource);
VIR_FREE((*parsedUri)->path_hostSystem);
VIR_FREE(*parsedUri);
}
int
esxUtil_ParseVirtualMachineIDString(const char *id_string, int *id)
{
/* Try to parse an integer from the complete string. */
if (virStrToLong_i(id_string, NULL, 10, id) == 0) {
return 0;
}
/*
* If that fails try to parse an integer from the string tail
* assuming the naming scheme Virtual Center seems to use.
*/
if (STRPREFIX(id_string, "vm-")) {
if (virStrToLong_i(id_string + 3, NULL, 10, id) == 0) {
return 0;
}
}
return -1;
}
int
esxUtil_ParseDatastorePath(const char *datastorePath, char **datastoreName,
char **directoryName, char **fileName)
{
int result = -1;
char *copyOfDatastorePath = NULL;
char *tmp = NULL;
char *saveptr = NULL;
char *preliminaryDatastoreName = NULL;
char *directoryAndFileName = NULL;
char *separator = NULL;
if (datastoreName == NULL || *datastoreName != NULL ||
directoryName == NULL || *directoryName != NULL ||
fileName == NULL || *fileName != NULL) {
ESX_ERROR(VIR_ERR_INTERNAL_ERROR, "%s", _("Invalid argument"));
return -1;
}
if (esxVI_String_DeepCopyValue(&copyOfDatastorePath, datastorePath) < 0) {
goto cleanup;
}
/* Expected format: '[<datastore>] <path>' */
if ((tmp = STRSKIP(copyOfDatastorePath, "[")) == NULL ||
(preliminaryDatastoreName = strtok_r(tmp, "]", &saveptr)) == NULL ||
(directoryAndFileName = strtok_r(NULL, "", &saveptr)) == NULL) {
ESX_ERROR(VIR_ERR_INTERNAL_ERROR,
_("Datastore path '%s' doesn't have expected format "
"'[<datastore>] <path>'"), datastorePath);
goto cleanup;
}
if (esxVI_String_DeepCopyValue(datastoreName,
preliminaryDatastoreName) < 0) {
goto cleanup;
}
directoryAndFileName += strspn(directoryAndFileName, " ");
/* Split <path> into <directory>/<file>, where <directory> is optional */
separator = strrchr(directoryAndFileName, '/');
if (separator != NULL) {
*separator++ = '\0';
if (*separator == '\0') {
ESX_ERROR(VIR_ERR_INTERNAL_ERROR,
_("Datastore path '%s' doesn't reference a file"),
datastorePath);
goto cleanup;
}
if (esxVI_String_DeepCopyValue(directoryName,
directoryAndFileName) < 0 ||
esxVI_String_DeepCopyValue(fileName, separator) < 0) {
goto cleanup;
}
} else {
if (esxVI_String_DeepCopyValue(fileName, directoryAndFileName) < 0) {
goto cleanup;
}
}
result = 0;
cleanup:
if (result < 0) {
VIR_FREE(*datastoreName);
VIR_FREE(*directoryName);
VIR_FREE(*fileName);
}
VIR_FREE(copyOfDatastorePath);
return result;
}
int
esxUtil_ResolveHostname(const char *hostname,
char *ipAddress, size_t ipAddress_length)
{
struct addrinfo hints;
struct addrinfo *result = NULL;
int errcode;
memset(&hints, 0, sizeof (hints));
hints.ai_flags = AI_ADDRCONFIG;
hints.ai_family = AF_INET;
hints.ai_socktype = SOCK_STREAM;
hints.ai_protocol = 0;
errcode = getaddrinfo(hostname, NULL, &hints, &result);
if (errcode != 0) {
ESX_ERROR(VIR_ERR_INTERNAL_ERROR,
_("IP address lookup for host '%s' failed: %s"), hostname,
gai_strerror(errcode));
return -1;
}
if (result == NULL) {
ESX_ERROR(VIR_ERR_INTERNAL_ERROR,
_("No IP address for host '%s' found: %s"), hostname,
gai_strerror(errcode));
return -1;
}
errcode = getnameinfo(result->ai_addr, result->ai_addrlen, ipAddress,
ipAddress_length, NULL, 0, NI_NUMERICHOST);
if (errcode != 0) {
ESX_ERROR(VIR_ERR_INTERNAL_ERROR,
_("Formating IP address for host '%s' failed: %s"), hostname,
gai_strerror(errcode));
freeaddrinfo(result);
return -1;
}
freeaddrinfo(result);
return 0;
}
int
esxUtil_GetConfigString(virConfPtr conf, const char *name, char **string,
bool optional)
{
virConfValuePtr value;
*string = NULL;
value = virConfGetValue(conf, name);
if (value == NULL) {
if (optional) {
return 0;
}
ESX_ERROR(VIR_ERR_INTERNAL_ERROR,
_("Missing essential config entry '%s'"), name);
return -1;
}
if (value->type != VIR_CONF_STRING) {
ESX_ERROR(VIR_ERR_INTERNAL_ERROR,
_("Config entry '%s' must be a string"), name);
return -1;
}
if (value->str == NULL) {
if (optional) {
return 0;
}
ESX_ERROR(VIR_ERR_INTERNAL_ERROR,
_("Missing essential config entry '%s'"), name);
return -1;
}
*string = strdup(value->str);
if (*string == NULL) {
virReportOOMError();
return -1;
}
return 0;
}
int
esxUtil_GetConfigUUID(virConfPtr conf, const char *name, unsigned char *uuid,
bool optional)
{
virConfValuePtr value;
value = virConfGetValue(conf, name);
if (value == NULL) {
if (optional) {
return 0;
} else {
ESX_ERROR(VIR_ERR_INTERNAL_ERROR,
_("Missing essential config entry '%s'"), name);
return -1;
}
}
if (value->type != VIR_CONF_STRING) {
ESX_ERROR(VIR_ERR_INTERNAL_ERROR,
_("Config entry '%s' must be a string"), name);
return -1;
}
if (value->str == NULL) {
if (optional) {
return 0;
} else {
ESX_ERROR(VIR_ERR_INTERNAL_ERROR,
_("Missing essential config entry '%s'"), name);
return -1;
}
}
if (virUUIDParse(value->str, uuid) < 0) {
ESX_ERROR(VIR_ERR_INTERNAL_ERROR,
_("Could not parse UUID from string '%s'"), value->str);
return -1;
}
return 0;
}
int
esxUtil_GetConfigLong(virConfPtr conf, const char *name, long long *number,
long long default_, bool optional)
{
virConfValuePtr value;
*number = default_;
value = virConfGetValue(conf, name);
if (value == NULL) {
if (optional) {
return 0;
} else {
ESX_ERROR(VIR_ERR_INTERNAL_ERROR,
_("Missing essential config entry '%s'"), name);
return -1;
}
}
if (value->type == VIR_CONF_STRING) {
if (value->str == NULL) {
if (optional) {
return 0;
} else {
ESX_ERROR(VIR_ERR_INTERNAL_ERROR,
_("Missing essential config entry '%s'"), name);
return -1;
}
}
if (STREQ(value->str, "unlimited")) {
*number = -1;
} else if (virStrToLong_ll(value->str, NULL, 10, number) < 0) {
ESX_ERROR(VIR_ERR_INTERNAL_ERROR,
_("Config entry '%s' must represent an integer value"),
name);
return -1;
}
} else {
ESX_ERROR(VIR_ERR_INTERNAL_ERROR,
_("Config entry '%s' must be a string"), name);
return -1;
}
return 0;
}
int
esxUtil_GetConfigBoolean(virConfPtr conf, const char *name, bool *boolean_,
bool default_, bool optional)
{
virConfValuePtr value;
*boolean_ = default_;
value = virConfGetValue(conf, name);
if (value == NULL) {
if (optional) {
return 0;
} else {
ESX_ERROR(VIR_ERR_INTERNAL_ERROR,
_("Missing essential config entry '%s'"), name);
return -1;
}
}
if (value->type == VIR_CONF_STRING) {
if (value->str == NULL) {
if (optional) {
return 0;
} else {
ESX_ERROR(VIR_ERR_INTERNAL_ERROR,
_("Missing essential config entry '%s'"), name);
return -1;
}
}
if (STRCASEEQ(value->str, "true")) {
*boolean_ = 1;
} else if (STRCASEEQ(value->str, "false")) {
*boolean_ = 0;
} else {
ESX_ERROR(VIR_ERR_INTERNAL_ERROR,
_("Config entry '%s' must represent a boolean value "
"(true|false)"), name);
return -1;
}
} else {
ESX_ERROR(VIR_ERR_INTERNAL_ERROR,
_("Config entry '%s' must be a string"), name);
return -1;
}
return 0;
}
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