/*
* this function tries to convert configuration in files into scf
* it loads xml conf into node tree then dump them to scf with
* mgmt_config_save2scf()
* this function has 3 return values:
* CONVERT_OK: successfully converted
* CONVERT_INIT_NEW: configuration files dont exist, created a new scf entry
* CONVERT_FAIL: some error occurred in conversion and no scf entry created.
* In this case, user have to check files manually and try
* conversion again.
*/
convert_ret_t
mgmt_convert_conf()
{
targ_scf_t *h = NULL;
xmlTextReaderPtr r;
convert_ret_t ret = CONVERT_FAIL;
int xml_fd = -1;
int n;
tgt_node_t *node = NULL;
tgt_node_t *next = NULL;
char path[MAXPATHLEN];
char *target = NULL;
h = mgmt_handle_init();
if (h == NULL)
return (CONVERT_FAIL);
/* check main config in pgroup iscsitgt */
if (scf_service_get_pg(h->t_service, "iscsitgt", h->t_pg) == 0) {
ret = CONVERT_OK;
goto done;
}
/* check the conf files */
if (access(config_file, R_OK) != 0) {
/*
* if there is no configuration file, initialize
* an empty scf entry
*/
if (mgmt_transaction_start(h, "iscsitgt", "basic") == True) {
ret = CONVERT_INIT_NEW;
node = tgt_node_alloc(XML_ELEMENT_VERS, String, "1.0");
new_property(h, node);
tgt_node_free(node);
/* "daemonize" is set to true by default */
node = tgt_node_alloc(XML_ELEMENT_DBGDAEMON, String,
"true");
new_property(h, node);
tgt_node_free(node);
node = NULL;
node = tgt_node_alloc(ISCSI_MODIFY_AUTHNAME, String,
ISCSI_AUTH_MODIFY);
new_property(h, node);
tgt_node_free(node);
node = tgt_node_alloc(ISCSI_VALUE_AUTHNAME, String,
ISCSI_AUTH_VALUE);
new_property(h, node);
tgt_node_free(node);
mgmt_transaction_end(h);
} else {
syslog(LOG_ERR, "Creating empty entry failed");
ret = CONVERT_FAIL;
goto done;
}
if (mgmt_transaction_start(h, "passwords", "application") ==
True) {
node = tgt_node_alloc(ISCSI_READ_AUTHNAME, String,
ISCSI_AUTH_READ);
new_property(h, node);
tgt_node_free(node);
node = tgt_node_alloc(ISCSI_MODIFY_AUTHNAME, String,
ISCSI_AUTH_MODIFY);
new_property(h, node);
tgt_node_free(node);
node = tgt_node_alloc(ISCSI_VALUE_AUTHNAME, String,
ISCSI_AUTH_VALUE);
new_property(h, node);
tgt_node_free(node);
mgmt_transaction_end(h);
} else {
syslog(LOG_ERR, "Creating empty entry failed");
ret = CONVERT_FAIL;
}
goto done;
}
if ((xml_fd = open(config_file, O_RDONLY)) >= 0)
r = (xmlTextReaderPtr)xmlReaderForFd(xml_fd, NULL, NULL, 0);
if (r != NULL) {
n = xmlTextReaderRead(r);
while (n == 1) {
if (tgt_node_process(r, &node) == False) {
break;
}
n = xmlTextReaderRead(r);
}
if (n < 0) {
syslog(LOG_ERR, "Parsing main config failed");
ret = CONVERT_FAIL;
goto done;
}
main_config = node;
(void) tgt_find_value_str(node, XML_ELEMENT_BASEDIR,
&target_basedir);
if (target_basedir == NULL)
target_basedir = strdup(DEFAULT_TARGET_BASEDIR);
/* Now convert targets' config if possible */
if (xml_fd != -1)
(void) close(xml_fd);
xmlTextReaderClose(r);
xmlFreeTextReader(r);
xmlCleanupParser();
r = NULL;
xml_fd = -1;
node = NULL;
(void) snprintf(path, MAXPATHLEN, "%s/%s",
target_basedir, "config.xml");
if ((xml_fd = open(path, O_RDONLY)) >= 0)
r = (xmlTextReaderPtr)xmlReaderForFd(xml_fd,
NULL, NULL, 0);
if (r != NULL) {
n = xmlTextReaderRead(r);
while (n == 1) {
if (tgt_node_process(r, &node) == False) {
break;
}
n = xmlTextReaderRead(r);
}
if (n < 0) {
syslog(LOG_ERR, "Parsing target conf failed");
ret = CONVERT_FAIL;
goto done;
}
/* now combine main_config and node */
if (node) {
next = NULL;
while ((next = tgt_node_next(node,
XML_ELEMENT_TARG, next)) != NULL) {
tgt_node_add(main_config,
tgt_node_dup(next));
}
tgt_node_free(node);
}
if (mgmt_config_save2scf() != True) {
syslog(LOG_ERR, "Converting config failed");
if (xml_fd != -1)
(void) close(xml_fd);
xmlTextReaderClose(r);
xmlFreeTextReader(r);
xmlCleanupParser();
ret = CONVERT_FAIL;
goto done;
}
/* Copy files into backup dir */
(void) snprintf(path, sizeof (path), "%s/backup",
target_basedir);
if ((mkdir(path, 0755) == -1) && (errno != EEXIST)) {
syslog(LOG_ERR, "Creating backup dir failed");
ret = CONVERT_FAIL;
goto done;
}
backup(config_file, NULL);
(void) snprintf(path, MAXPATHLEN, "%s/%s",
target_basedir, "config.xml");
backup(path, NULL);
while ((next = tgt_node_next(main_config,
XML_ELEMENT_TARG, next)) != NULL) {
if (tgt_find_value_str(next, XML_ELEMENT_INAME,
&target) == False) {
continue;
}
(void) snprintf(path, MAXPATHLEN, "%s/%s",
target_basedir, target);
if (mgmt_convert_param(path, next)
!= True) {
ret = CONVERT_FAIL;
goto done;
}
free(target);
}
ret = CONVERT_OK;
syslog(LOG_NOTICE, "Conversion succeeded");
xmlTextReaderClose(r);
xmlFreeTextReader(r);
xmlCleanupParser();
} else {
syslog(LOG_ERR, "Reading targets config failed");
ret = CONVERT_FAIL;
goto done;
}
} else {
syslog(LOG_ERR, "Reading main config failed");
ret = CONVERT_FAIL;
goto done;
}
done:
if (xml_fd != -1)
(void) close(xml_fd);
mgmt_handle_fini(h);
return (ret);
}
/*
* Convert legacy (XML) configuration files into an equivalent SCF
* representation.
*
* Read the XML from disk, translate the XML into a tree of nodes of
* type tgt_node_t, and write the in-memory tree to SCF's persistent
* data-store using mgmt_config_save2scf().
*
* Return Values:
* CONVERT_OK: successfully converted
* CONVERT_INIT_NEW: configuration files don't exist; created an SCF entry
* CONVERT_FAIL: some conversion error occurred; no SCF entry created.
* In this case, user has to manually check files and try
* conversion again.
*/
convert_ret_t
mgmt_convert_conf()
{
targ_scf_t *h = NULL;
xmlTextReaderPtr r;
convert_ret_t ret = CONVERT_FAIL;
int xml_fd = -1;
int n;
tgt_node_t *node = NULL;
tgt_node_t *next = NULL;
char path[MAXPATHLEN];
char *target = NULL;
h = mgmt_handle_init();
if (h == NULL)
return (CONVERT_FAIL);
/*
* Check if the "iscsitgt" PropertyGroup has already been added
* to the "iscsitgt" SMF Service. If so, then we have already
* converted the legacy configuration files (and there is no work
* to do).
*/
if (scf_service_get_pg(h->t_service, "iscsitgt", h->t_pg) == 0) {
ret = CONVERT_OK;
goto done;
}
if (access(config_file, R_OK) != 0) {
/*
* then the Main Config file is not present; initialize
* SCF Properties to default values.
*/
if (mgmt_transaction_start(h, "iscsitgt", "basic") == True) {
ret = CONVERT_INIT_NEW;
node = tgt_node_alloc(XML_ELEMENT_VERS, String, "1.0");
new_property(h, node);
tgt_node_free(node);
/* "daemonize" is set to true by default */
node = tgt_node_alloc(XML_ELEMENT_DBGDAEMON, String,
"true");
new_property(h, node);
tgt_node_free(node);
node = NULL;
node = tgt_node_alloc(ISCSI_MODIFY_AUTHNAME, String,
ISCSI_AUTH_MODIFY);
new_property(h, node);
tgt_node_free(node);
node = tgt_node_alloc(ISCSI_VALUE_AUTHNAME, String,
ISCSI_AUTH_VALUE);
new_property(h, node);
tgt_node_free(node);
(void) mgmt_transaction_end(h);
} else {
syslog(LOG_ERR, "Creating empty entry failed");
ret = CONVERT_FAIL;
goto done;
}
if (mgmt_transaction_start(h, "passwords", "application") ==
True) {
node = tgt_node_alloc(ISCSI_READ_AUTHNAME, String,
ISCSI_AUTH_READ);
new_property(h, node);
tgt_node_free(node);
node = tgt_node_alloc(ISCSI_MODIFY_AUTHNAME, String,
ISCSI_AUTH_MODIFY);
new_property(h, node);
tgt_node_free(node);
node = tgt_node_alloc(ISCSI_VALUE_AUTHNAME, String,
ISCSI_AUTH_VALUE);
new_property(h, node);
tgt_node_free(node);
(void) mgmt_transaction_end(h);
} else {
syslog(LOG_ERR, "Creating empty entry failed");
ret = CONVERT_FAIL;
}
goto done;
}
if ((xml_fd = open(config_file, O_RDONLY)) >= 0)
r = (xmlTextReaderPtr)xmlReaderForFd(xml_fd, NULL, NULL, 0);
if (r != NULL) {
int is_target_config;
n = xmlTextReaderRead(r);
while (n == 1) {
if (tgt_node_process(r, &node) == False) {
break;
}
n = xmlTextReaderRead(r);
}
if (n < 0) {
syslog(LOG_ERR, "Parsing main config failed");
ret = CONVERT_FAIL;
goto done;
}
main_config = node;
/*
* Initialize the Base Directory (global) variable by
* using the value specified in the XML_ELEMENT_BASEDIR
* XML tag. If a tag is not specified, use a default.
*/
(void) tgt_find_value_str(node, XML_ELEMENT_BASEDIR,
&target_basedir);
if (target_basedir == NULL)
target_basedir = strdup(DEFAULT_TARGET_BASEDIR);
if (xml_fd != -1) {
(void) close(xml_fd);
xml_fd = -1;
}
(void) xmlTextReaderClose(r);
xmlFreeTextReader(r);
xmlCleanupParser();
/*
* If a Target Config file is present, read and translate
* its XML representation into a tree of tgt_node_t.
* Merge that tree with the tree of tgt_node_t rooted at
* 'main_config'. The merged tree will then be archived
* using an SCF representation.
*/
(void) snprintf(path, MAXPATHLEN, "%s/%s",
target_basedir, "config.xml");
if ((xml_fd = open(path, O_RDONLY)) >= 0) {
is_target_config = 1;
r = (xmlTextReaderPtr)xmlReaderForFd(xml_fd,
NULL, NULL, 0);
} else {
is_target_config = 0;
r = NULL;
}
if (r != NULL) {
/* then the Target Config file is available. */
node = NULL;
/*
* Create a tree of tgt_node_t rooted at 'node' by
* processing each XML Tag in the file.
*/
n = xmlTextReaderRead(r);
while (n == 1) {
if (tgt_node_process(r, &node) == False) {
break;
}
n = xmlTextReaderRead(r);
}
if (n < 0) {
syslog(LOG_ERR, "Parsing target conf failed");
ret = CONVERT_FAIL;
goto done;
}
/*
* Merge the tree at 'node' into the tree rooted at
* 'main_config'.
*/
if (node != NULL) {
next = NULL;
while ((next = tgt_node_next(node,
XML_ELEMENT_TARG, next)) != NULL) {
tgt_node_add(main_config,
tgt_node_dup(next));
}
tgt_node_free(node);
}
}
/*
* Iterate over the in-memory tree rooted at 'main_config'
* and write a representation of the appropriate nodes to
* SCF's persistent data-store.
*/
if (mgmt_config_save2scf() != True) {
syslog(LOG_ERR, "Converting config failed");
if (xml_fd != -1) {
(void) close(xml_fd);
xml_fd = -1;
}
(void) xmlTextReaderClose(r);
xmlFreeTextReader(r);
xmlCleanupParser();
ret = CONVERT_FAIL;
goto done;
}
/*
* Move the configuration files into a well-known backup
* directory. This allows a user to restore their
* configuration, if they choose.
*/
(void) snprintf(path, sizeof (path), "%s/backup",
target_basedir);
if ((mkdir(path, 0755) == -1) && (errno != EEXIST)) {
syslog(LOG_ERR, "Creating backup dir failed");
ret = CONVERT_FAIL;
goto done;
}
/* Save the Main Config file. */
backup(config_file, NULL);
/* Save the Target Config file, if it was present. */
if (is_target_config != 0) {
(void) snprintf(path, MAXPATHLEN, "%s/%s",
target_basedir, "config.xml");
backup(path, NULL);
}
/*
* For each tgt_node_t node in 'main_config' whose value is
* an iSCSI Name as defined in the RFC (3720) standard (eg,
* "iqn.1986..."), read its XML-encoded attributes from a
* flat-file and write an equivalent representation to SCF's
* data-store.
*/
while ((next = tgt_node_next(main_config,
XML_ELEMENT_TARG, next)) != NULL) {
if (tgt_find_value_str(next, XML_ELEMENT_INAME,
&target) == False) {
continue;
}
(void) snprintf(path, MAXPATHLEN, "%s/%s",
target_basedir, target);
if (mgmt_convert_param(path, next)
!= True) {
ret = CONVERT_FAIL;
goto done;
}
free(target);
}
ret = CONVERT_OK;
syslog(LOG_NOTICE, "Conversion succeeded");
(void) xmlTextReaderClose(r);
xmlFreeTextReader(r);
xmlCleanupParser();
} else {
syslog(LOG_ERR, "Reading main config failed");
ret = CONVERT_FAIL;
goto done;
}
done:
if (xml_fd != -1)
(void) close(xml_fd);
mgmt_handle_fini(h);
return (ret);
}
