263 lines
8.2 KiB
C
263 lines
8.2 KiB
C
/* -*- Mode: C; tab-width: 4; indent-tabs-mode: t; c-basic-offset: 4 -*- */
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/* NetworkManager -- Network link manager
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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* Boston, MA 02110-1301 USA.
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*
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* (C) Copyright 2016 Red Hat, Inc.
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*/
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#include "nm-default.h"
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#include "nm-shared-utils.h"
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#include <errno.h>
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/*****************************************************************************/
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/* _nm_utils_ascii_str_to_int64:
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*
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* A wrapper for g_ascii_strtoll, that checks whether the whole string
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* can be successfully converted to a number and is within a given
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* range. On any error, @fallback will be returned and %errno will be set
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* to a non-zero value. On success, %errno will be set to zero, check %errno
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* for errors. Any trailing or leading (ascii) white space is ignored and the
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* functions is locale independent.
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*
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* The function is guaranteed to return a value between @min and @max
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* (inclusive) or @fallback. Also, the parsing is rather strict, it does
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* not allow for any unrecognized characters, except leading and trailing
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* white space.
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**/
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gint64
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_nm_utils_ascii_str_to_int64 (const char *str, guint base, gint64 min, gint64 max, gint64 fallback)
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{
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gint64 v;
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size_t len;
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char buf[64], *s, *str_free = NULL;
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if (str) {
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while (g_ascii_isspace (str[0]))
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str++;
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}
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if (!str || !str[0]) {
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errno = EINVAL;
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return fallback;
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}
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len = strlen (str);
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if (g_ascii_isspace (str[--len])) {
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/* backward search the first non-ws character.
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* We already know that str[0] is non-ws. */
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while (g_ascii_isspace (str[--len]))
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;
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/* str[len] is now the last non-ws character... */
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len++;
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if (len >= sizeof (buf))
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s = str_free = g_malloc (len + 1);
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else
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s = buf;
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memcpy (s, str, len);
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s[len] = 0;
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nm_assert (len > 0 && len < strlen (str) && len == strlen (s));
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nm_assert (!g_ascii_isspace (str[len-1]) && g_ascii_isspace (str[len]));
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nm_assert (strncmp (str, s, len) == 0);
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str = s;
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}
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errno = 0;
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v = g_ascii_strtoll (str, &s, base);
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if (errno != 0)
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v = fallback;
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else if (s[0] != 0) {
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errno = EINVAL;
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v = fallback;
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} else if (v > max || v < min) {
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errno = ERANGE;
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v = fallback;
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}
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if (G_UNLIKELY (str_free))
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g_free (str_free);
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return v;
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}
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/*****************************************************************************/
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gint
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_nm_utils_ascii_str_to_bool (const char *str,
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gint default_value)
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{
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gsize len;
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char *s = NULL;
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if (!str)
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return default_value;
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while (str[0] && g_ascii_isspace (str[0]))
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str++;
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if (!str[0])
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return default_value;
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len = strlen (str);
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if (g_ascii_isspace (str[len - 1])) {
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s = g_strdup (str);
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g_strchomp (s);
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str = s;
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}
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if (!g_ascii_strcasecmp (str, "true") || !g_ascii_strcasecmp (str, "yes") || !g_ascii_strcasecmp (str, "on") || !g_ascii_strcasecmp (str, "1"))
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default_value = TRUE;
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else if (!g_ascii_strcasecmp (str, "false") || !g_ascii_strcasecmp (str, "no") || !g_ascii_strcasecmp (str, "off") || !g_ascii_strcasecmp (str, "0"))
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default_value = FALSE;
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if (s)
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g_free (s);
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return default_value;
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}
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/*****************************************************************************/
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G_DEFINE_QUARK (nm-utils-error-quark, nm_utils_error)
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void
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nm_utils_error_set_cancelled (GError **error,
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gboolean is_disposing,
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const char *instance_name)
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{
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if (is_disposing) {
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g_set_error (error, NM_UTILS_ERROR, NM_UTILS_ERROR_CANCELLED_DISPOSING,
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"Disposing %s instance",
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instance_name && *instance_name ? instance_name : "source");
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} else {
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g_set_error_literal (error, G_IO_ERROR, G_IO_ERROR_CANCELLED,
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"Request cancelled");
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}
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}
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gboolean
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nm_utils_error_is_cancelled (GError *error,
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gboolean consider_is_disposing)
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{
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if (error) {
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if (g_error_matches (error, G_IO_ERROR, G_IO_ERROR_CANCELLED))
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return TRUE;
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if ( consider_is_disposing
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&& g_error_matches (error, NM_UTILS_ERROR, NM_UTILS_ERROR_CANCELLED_DISPOSING))
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return TRUE;
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}
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return FALSE;
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}
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/*****************************************************************************/
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/**
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* nm_g_object_set_property:
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* @object: the target object
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* @property_name: the property name
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* @value: the #GValue to set
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* @error: (allow-none): optional error argument
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*
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* A reimplementation of g_object_set_property(), but instead
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* returning an error instead of logging a warning. All g_object_set*()
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* versions in glib require you to not pass invalid types or they will
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* log a g_warning() -- without reporting an error. We don't want that,
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* so we need to hack error checking around it.
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*
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* Returns: whether the value was successfully set.
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*/
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gboolean
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nm_g_object_set_property (GObject *object,
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const gchar *property_name,
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const GValue *value,
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GError **error)
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{
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GParamSpec *pspec;
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nm_auto_unset_gvalue GValue tmp_value = G_VALUE_INIT;
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GObjectClass *klass;
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g_return_val_if_fail (G_IS_OBJECT (object), FALSE);
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g_return_val_if_fail (property_name != NULL, FALSE);
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g_return_val_if_fail (G_IS_VALUE (value), FALSE);
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g_return_val_if_fail (!error || !*error, FALSE);
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/* g_object_class_find_property() does g_param_spec_get_redirect_target(),
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* where we differ from a plain g_object_set_property(). */
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pspec = g_object_class_find_property (G_OBJECT_GET_CLASS (object), property_name);
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if (!pspec) {
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g_set_error (error, NM_UTILS_ERROR, NM_UTILS_ERROR_UNKNOWN,
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_("object class '%s' has no property named '%s'"),
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G_OBJECT_TYPE_NAME (object),
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property_name);
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return FALSE;
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}
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if (!(pspec->flags & G_PARAM_WRITABLE)) {
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g_set_error (error, NM_UTILS_ERROR, NM_UTILS_ERROR_UNKNOWN,
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_("property '%s' of object class '%s' is not writable"),
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pspec->name,
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G_OBJECT_TYPE_NAME (object));
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return FALSE;
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}
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if ((pspec->flags & G_PARAM_CONSTRUCT_ONLY)) {
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g_set_error (error, NM_UTILS_ERROR, NM_UTILS_ERROR_UNKNOWN,
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_("construct property \"%s\" for object '%s' can't be set after construction"),
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pspec->name, G_OBJECT_TYPE_NAME (object));
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return FALSE;
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}
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klass = g_type_class_peek (pspec->owner_type);
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if (klass == NULL) {
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g_set_error (error, NM_UTILS_ERROR, NM_UTILS_ERROR_UNKNOWN,
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_("'%s::%s' is not a valid property name; '%s' is not a GObject subtype"),
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g_type_name (pspec->owner_type), pspec->name, g_type_name (pspec->owner_type));
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return FALSE;
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}
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/* provide a copy to work from, convert (if necessary) and validate */
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g_value_init (&tmp_value, pspec->value_type);
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if (!g_value_transform (value, &tmp_value)) {
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g_set_error (error, NM_UTILS_ERROR, NM_UTILS_ERROR_UNKNOWN,
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_("unable to set property '%s' of type '%s' from value of type '%s'"),
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pspec->name,
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g_type_name (pspec->value_type),
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G_VALUE_TYPE_NAME (value));
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return FALSE;
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}
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if ( g_param_value_validate (pspec, &tmp_value)
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&& !(pspec->flags & G_PARAM_LAX_VALIDATION)) {
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gs_free char *contents = g_strdup_value_contents (value);
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g_set_error (error, NM_UTILS_ERROR, NM_UTILS_ERROR_UNKNOWN,
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_("value \"%s\" of type '%s' is invalid or out of range for property '%s' of type '%s'"),
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contents,
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G_VALUE_TYPE_NAME (value),
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pspec->name,
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g_type_name (pspec->value_type));
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return FALSE;
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}
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g_object_set_property (object, property_name, &tmp_value);
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return TRUE;
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}
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/*****************************************************************************/
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