API struct lyd_node *
lyd_parse_path(struct ly_ctx *ctx, const char *path, LYD_FORMAT format, int options)
{
int fd;
struct lyd_node *ret;
if (!ctx || !path) {
LOGERR(LY_EINVAL, "%s: Invalid parameter.", __func__);
return NULL;
}
fd = open(path, O_RDONLY);
if (fd == -1) {
LOGERR(LY_ESYS, "Failed to open data file \"%s\" (%s).", path, strerror(errno));
return NULL;
}
ret = lyd_parse_fd(ctx, fd, format, options);
close(fd);
return ret;
}
/**
* @brief Import content of the specified datastore for the given module from a file
* referenced by the descriptor 'fd_in'
*/
static int
srcfg_import_datastore(struct ly_ctx *ly_ctx, int fd_in, const char *module_name, srcfg_datastore_t datastore,
LYD_FORMAT format, bool permanent)
{
int rc = SR_ERR_INTERNAL;
unsigned i = 0;
struct lyd_node *new_data_tree = NULL;
struct lyd_node *current_data_tree = NULL;
struct lyd_difflist *diff = NULL;
char *first_xpath = NULL, *second_xpath = NULL;
char *input_data = NULL;
int ret = 0;
struct stat info;
CHECK_NULL_ARG2(ly_ctx, module_name);
/* parse input data */
ret = fstat(fd_in, &info);
CHECK_NOT_MINUS1_LOG_GOTO(ret, rc, SR_ERR_INTERNAL, cleanup,
"Unable to obtain input file info: %s.", sr_strerror_safe(errno));
ly_errno = LY_SUCCESS;
if (S_ISREG(info.st_mode)) {
/* load (using mmap) and parse the input data in one step */
new_data_tree = lyd_parse_fd(ly_ctx, fd_in, format, LYD_OPT_STRICT | LYD_OPT_CONFIG);
} else { /* most likely STDIN */
/* load input data into the memory first */
ret = srcfg_read_file_content(fd_in, &input_data);
CHECK_RC_MSG_GOTO(ret, cleanup, "Unable to read the input data.");
/* parse the input data stored inside memory buffer */
new_data_tree = lyd_parse_mem(ly_ctx, input_data, format, LYD_OPT_STRICT | LYD_OPT_CONFIG);
}
if (NULL == new_data_tree && LY_SUCCESS != ly_errno) {
SR_LOG_ERR("Unable to parse the input data: %s", ly_errmsg());
goto cleanup;
}
/* validate input data */
if (NULL != new_data_tree) {
ret = lyd_validate(&new_data_tree, LYD_OPT_STRICT | LYD_OPT_CONFIG | LYD_WD_IMPL_TAG);
CHECK_ZERO_LOG_GOTO(ret, rc, SR_ERR_INTERNAL, cleanup, "Input data are not valid: %s", ly_errmsg());
}
/* remove default nodes */
lyd_wd_cleanup(&new_data_tree, 0);
/* get data tree of currently stored configuration */
rc = srcfg_get_module_data(ly_ctx, module_name, ¤t_data_tree);
if (SR_ERR_OK != rc) {
goto cleanup;
}
/* get the list of changes made by the user */
diff = lyd_diff(current_data_tree, new_data_tree, 0);
if (NULL == diff) {
SR_LOG_ERR("Unable to get the list of changes: %s", ly_errmsg());
goto cleanup;
}
/* iterate over the list of differences and for each issue corresponding Sysrepo command(s) */
while (diff->type && LYD_DIFF_END != diff->type[i]) {
if (NULL != diff->first[i]) {
first_xpath = lyd_path(diff->first[i]);
if (NULL == first_xpath) {
SR_LOG_ERR("Error returned from lyd_path: %s.", ly_errmsg());
goto cleanup;
}
}
if (NULL != diff->second[i]) {
second_xpath = lyd_path(diff->second[i]);
if (NULL == second_xpath) {
free(first_xpath);
first_xpath = NULL;
SR_LOG_ERR("Error returned from lyd_path: %s.", ly_errmsg());
goto cleanup;
}
}
switch (diff->type[i]) {
case LYD_DIFF_DELETED:
SR_LOG_DBG("<LYD_DIFF_DELETED> node: %s", first_xpath);
rc = srcfg_convert_lydiff_deleted(first_xpath);
break;
case LYD_DIFF_CHANGED:
SR_LOG_DBG("<LYD_DIFF_CHANGED> orig: %s, new: %s", first_xpath, second_xpath);
rc = srcfg_convert_lydiff_changed(first_xpath, diff->second[i]);
break;
case LYD_DIFF_MOVEDAFTER1:
SR_LOG_DBG("<LYD_DIFF_MOVEDAFTER1> moved: %s, after: %s", first_xpath, second_xpath);
rc = srcfg_convert_lydiff_movedafter(first_xpath, second_xpath);
break;
case LYD_DIFF_CREATED:
SR_LOG_DBG("<LYD_DIFF_CREATED> parent: %s, new node: %s", first_xpath, second_xpath);
rc = srcfg_convert_lydiff_created(diff->second[i]);
break;
case LYD_DIFF_MOVEDAFTER2:
SR_LOG_DBG("<LYD_DIFF_MOVEDAFTER2> after: %s, this new node was inserted: %s", first_xpath, second_xpath);
rc = srcfg_convert_lydiff_movedafter(second_xpath, first_xpath);
break;
default:
assert(0 && "not reachable");
}
free(first_xpath);
free(second_xpath);
first_xpath = second_xpath = NULL;
if (SR_ERR_OK != rc) {
goto cleanup;
}
++i;
}
if (0 == i) {
SR_LOG_DBG_MSG("No changes were made.");
} else {
/* commit the changes */
rc = sr_commit(srcfg_session);
if (SR_ERR_OK != rc) {
SR_LOG_ERR("Error returned from sr_commit: %s.", sr_strerror(rc));
goto cleanup;
}
if (SRCFG_STORE_RUNNING == datastore && permanent) {
/* copy running datastore data into the startup datastore */
rc = sr_copy_config(srcfg_session, module_name, SR_DS_RUNNING, SR_DS_STARTUP);
if (SR_ERR_OK != rc) {
SR_LOG_ERR("Error returned from sr_copy_config: %s.", sr_strerror(rc));
goto cleanup;
}
}
}
rc = SR_ERR_OK;
cleanup:
if (NULL != diff) {
lyd_free_diff(diff);
}
if (NULL != current_data_tree) {
lyd_free_withsiblings(current_data_tree);
}
if (NULL != new_data_tree) {
lyd_free_withsiblings(new_data_tree);
}
if (input_data) {
free(input_data);
}
return rc;
}