nm-utils.c 169 KB
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/* -*- Mode: C; tab-width: 4; indent-tabs-mode: t; c-basic-offset: 4 -*- */

/*
 * 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 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., 51 Franklin Street, Fifth Floor,
 * Boston, MA 02110-1301 USA.
 *
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 * Copyright 2005 - 2017 Red Hat, Inc.
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 */

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#include "nm-default.h"
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#include "nm-utils.h"

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#include <string.h>
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#include <errno.h>
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#include <stdlib.h>
#include <netinet/ether.h>
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#include <arpa/inet.h>
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#include <uuid/uuid.h>
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#include <libintl.h>
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#include <gmodule.h>
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#include <sys/stat.h>
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#include <net/if.h>
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#include <linux/pkt_sched.h>
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Thomas Haller committed
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#include "nm-utils/nm-jansson.h"
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#include "nm-utils/nm-enum-utils.h"
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#include "nm-common-macros.h"
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#include "nm-utils-private.h"
#include "nm-setting-private.h"
#include "crypto.h"
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#include "nm-setting-bond.h"
#include "nm-setting-bridge.h"
#include "nm-setting-infiniband.h"
#include "nm-setting-ip6-config.h"
#include "nm-setting-team.h"
#include "nm-setting-vlan.h"
#include "nm-setting-wired.h"
#include "nm-setting-wireless.h"

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/**
 * SECTION:nm-utils
 * @short_description: Utility functions
 *
 * A collection of utility functions for working with SSIDs, IP addresses, Wi-Fi
 * access points and devices, among other things.
 */

struct IsoLangToEncodings
{
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	const char *lang;
	const char *const *encodings;
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};

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#define LANG_ENCODINGS(l, ...) { .lang = l, .encodings = (const char *[]) { __VA_ARGS__, NULL }}

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/* 5-letter language codes */
static const struct IsoLangToEncodings isoLangEntries5[] =
{
	/* Simplified Chinese */
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	LANG_ENCODINGS ("zh_cn",   "euc-cn", "gb2312", "gb18030"),         /* PRC */
	LANG_ENCODINGS ("zh_sg",   "euc-cn", "gb2312", "gb18030"),         /* Singapore */
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	/* Traditional Chinese */
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	LANG_ENCODINGS ("zh_tw",   "big5", "euc-tw"),                      /* Taiwan */
	LANG_ENCODINGS ("zh_hk",   "big5", "euc-tw", "big5-hkcs"),         /* Hong Kong */
	LANG_ENCODINGS ("zh_mo",   "big5", "euc-tw"),                      /* Macau */
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	LANG_ENCODINGS (NULL, NULL)
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};

/* 2-letter language codes; we don't care about the other 3 in this table */
static const struct IsoLangToEncodings isoLangEntries2[] =
{
	/* Japanese */
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	LANG_ENCODINGS ("ja",      "euc-jp", "shift_jis", "iso-2022-jp"),
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	/* Korean */
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	LANG_ENCODINGS ("ko",      "euc-kr", "iso-2022-kr", "johab"),
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	/* Thai */
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	LANG_ENCODINGS ("th",      "iso-8859-11", "windows-874"),
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	/* Central European */
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	LANG_ENCODINGS ("hu",      "iso-8859-2", "windows-1250"),          /* Hungarian */
	LANG_ENCODINGS ("cs",      "iso-8859-2", "windows-1250"),          /* Czech */
	LANG_ENCODINGS ("hr",      "iso-8859-2", "windows-1250"),          /* Croatian */
	LANG_ENCODINGS ("pl",      "iso-8859-2", "windows-1250"),          /* Polish */
	LANG_ENCODINGS ("ro",      "iso-8859-2", "windows-1250"),          /* Romanian */
	LANG_ENCODINGS ("sk",      "iso-8859-2", "windows-1250"),          /* Slovakian */
	LANG_ENCODINGS ("sl",      "iso-8859-2", "windows-1250"),          /* Slovenian */
	LANG_ENCODINGS ("sh",      "iso-8859-2", "windows-1250"),          /* Serbo-Croatian */
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	/* Cyrillic */
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	LANG_ENCODINGS ("ru",      "koi8-r", "windows-1251","iso-8859-5"), /* Russian */
	LANG_ENCODINGS ("be",      "koi8-r", "windows-1251","iso-8859-5"), /* Belorussian */
	LANG_ENCODINGS ("bg",      "windows-1251","koi8-r", "iso-8859-5"), /* Bulgarian */
	LANG_ENCODINGS ("mk",      "koi8-r", "windows-1251", "iso-8859-5"),/* Macedonian */
	LANG_ENCODINGS ("sr",      "koi8-r", "windows-1251", "iso-8859-5"),/* Serbian */
	LANG_ENCODINGS ("uk",      "koi8-u", "koi8-r", "windows-1251"),    /* Ukranian */
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	/* Arabic */
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	LANG_ENCODINGS ("ar",      "iso-8859-6","windows-1256"),
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	/* Baltic */
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	LANG_ENCODINGS ("et",      "iso-8859-4", "windows-1257"),          /* Estonian */
	LANG_ENCODINGS ("lt",      "iso-8859-4", "windows-1257"),          /* Lithuanian */
	LANG_ENCODINGS ("lv",      "iso-8859-4", "windows-1257"),          /* Latvian */
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	/* Greek */
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	LANG_ENCODINGS ("el",      "iso-8859-7","windows-1253"),
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	/* Hebrew */
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	LANG_ENCODINGS ("he",      "iso-8859-8", "windows-1255"),
	LANG_ENCODINGS ("iw",      "iso-8859-8", "windows-1255"),
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	/* Turkish */
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	LANG_ENCODINGS ("tr",      "iso-8859-9", "windows-1254"),
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	/* Table end */
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	LANG_ENCODINGS (NULL, NULL)
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};


static GHashTable * langToEncodings5 = NULL;
static GHashTable * langToEncodings2 = NULL;

static void
init_lang_to_encodings_hash (void)
{
	struct IsoLangToEncodings *enc;

	if (G_UNLIKELY (langToEncodings5 == NULL)) {
		/* Five-letter codes */
		enc = (struct IsoLangToEncodings *) &isoLangEntries5[0];
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		langToEncodings5 = g_hash_table_new (nm_str_hash, g_str_equal);
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		while (enc->lang) {
			g_hash_table_insert (langToEncodings5, (gpointer) enc->lang,
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			                     (gpointer) enc->encodings);
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			enc++;
		}
	}

	if (G_UNLIKELY (langToEncodings2 == NULL)) {
		/* Two-letter codes */
		enc = (struct IsoLangToEncodings *) &isoLangEntries2[0];
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		langToEncodings2 = g_hash_table_new (nm_str_hash, g_str_equal);
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		while (enc->lang) {
			g_hash_table_insert (langToEncodings2, (gpointer) enc->lang,
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			                     (gpointer) enc->encodings);
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			enc++;
		}
	}
}

static gboolean
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get_encodings_for_lang (const char *lang, const char *const **encodings)
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{
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	gs_free char *tmp_lang = NULL;
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	g_return_val_if_fail (lang, FALSE);
	g_return_val_if_fail (encodings, FALSE);
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	init_lang_to_encodings_hash ();

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	if ((*encodings = g_hash_table_lookup (langToEncodings5, lang)))
		return TRUE;
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	/* Truncate tmp_lang to length of 2 */
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	if (strlen (lang) > 2) {
		tmp_lang = g_strdup (lang);
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		tmp_lang[2] = '\0';
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		if ((*encodings = g_hash_table_lookup (langToEncodings2, tmp_lang)))
			return TRUE;
	}

	return FALSE;
}

static const char *const *
get_system_encodings (void)
{
	static const char *const *cached_encodings;
	static char *default_encodings[4];
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	const char *const *encodings = NULL;
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	char *lang;

	if (cached_encodings)
		return cached_encodings;

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	/* Use environment variables as encoding hint */
	lang = getenv ("LC_ALL");
	if (!lang)
		lang = getenv ("LC_CTYPE");
	if (!lang)
		lang = getenv ("LANG");
	if (lang) {
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		char *dot;

		lang = g_ascii_strdown (lang, -1);
		if ((dot = strchr (lang, '.')))
			*dot = '\0';

		get_encodings_for_lang (lang, &encodings);
		g_free (lang);
	}
	if (!encodings) {
		g_get_charset ((const char **) &default_encodings[0]);
		default_encodings[1] = "iso-8859-1";
		default_encodings[2] = "windows-1251";
		default_encodings[3] = NULL;
		encodings = (const char *const *) default_encodings;
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	}

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	cached_encodings = encodings;
	return cached_encodings;
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}

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/* init libnm */
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static gboolean initialized = FALSE;

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static void __attribute__((constructor))
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_nm_utils_init (void)
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{
	GModule *self;
	gpointer func;

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	if (initialized)
		return;
	initialized = TRUE;

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	self = g_module_open (NULL, 0);
	if (g_module_symbol (self, "nm_util_get_private", &func))
		g_error ("libnm-util symbols detected; Mixing libnm with libnm-util/libnm-glib is not supported");
	g_module_close (self);

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	bindtextdomain (GETTEXT_PACKAGE, LOCALEDIR);
	bind_textdomain_codeset (GETTEXT_PACKAGE, "UTF-8");
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	nm_g_type_init ();
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	_nm_dbus_errors_init ();
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}

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gboolean _nm_utils_is_manager_process;

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/* ssid helpers */

/**
 * nm_utils_ssid_to_utf8:
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 * @ssid: (array length=len): pointer to a buffer containing the SSID data
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 * @len: length of the SSID data in @ssid
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 *
 * Wi-Fi SSIDs are byte arrays, they are _not_ strings.  Thus, an SSID may
 * contain embedded NULLs and other unprintable characters.  Often it is
 * useful to print the SSID out for debugging purposes, but that should be the
 * _only_ use of this function.  Do not use this function for any persistent
 * storage of the SSID, since the printable SSID returned from this function
 * cannot be converted back into the real SSID of the access point.
 *
 * This function does almost everything humanly possible to convert the input
 * into a printable UTF-8 string, using roughly the following procedure:
 *
 * 1) if the input data is already UTF-8 safe, no conversion is performed
 * 2) attempts to get the current system language from the LANG environment
 *    variable, and depending on the language, uses a table of alternative
 *    encodings to try.  For example, if LANG=hu_HU, the table may first try
 *    the ISO-8859-2 encoding, and if that fails, try the Windows-1250 encoding.
 *    If all fallback encodings fail, replaces non-UTF-8 characters with '?'.
 * 3) If the system language was unable to be determined, falls back to the
 *    ISO-8859-1 encoding, then to the Windows-1251 encoding.
 * 4) If step 3 fails, replaces non-UTF-8 characters with '?'.
 *
 * Again, this function should be used for debugging and display purposes
 * _only_.
 *
 * Returns: (transfer full): an allocated string containing a UTF-8
 * representation of the SSID, which must be freed by the caller using g_free().
 * Returns %NULL on errors.
 **/
char *
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nm_utils_ssid_to_utf8 (const guint8 *ssid, gsize len)
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{
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	const char *const *encodings;
	const char *const *e;
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	char *converted = NULL;

	g_return_val_if_fail (ssid != NULL, NULL);

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	if (g_utf8_validate ((const gchar *) ssid, len, NULL))
		return g_strndup ((const gchar *) ssid, len);
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	encodings = get_system_encodings ();
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	for (e = encodings; *e; e++) {
		converted = g_convert ((const gchar *) ssid, len, "UTF-8", *e, NULL, NULL, NULL);
		if (converted)
			break;
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	}

	if (!converted) {
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		converted = g_convert_with_fallback ((const gchar *) ssid, len,
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		                                     "UTF-8", encodings[0], "?", NULL, NULL, NULL);
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	}

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	if (!converted) {
		/* If there is still no converted string, the SSID probably
		 * contains characters not valid in the current locale. Convert
		 * the string to ASCII instead.
		 */

		/* Use the printable range of 0x20-0x7E */
		gchar *valid_chars = " !\"#$%&'()*+,-./0123456789:;<=>?@"
		                     "ABCDEFGHIJKLMNOPQRSTUVWXYZ[\\]^_`"
		                     "abcdefghijklmnopqrstuvwxyz{|}~";

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		converted = g_strndup ((const char *) ssid, len);
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		g_strcanon (converted, valid_chars, '?');
	}

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	return converted;
}

/* Shamelessly ripped from the Linux kernel ieee80211 stack */
/**
 * nm_utils_is_empty_ssid:
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 * @ssid: (array length=len): pointer to a buffer containing the SSID data
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 * @len: length of the SSID data in @ssid
 *
 * Different manufacturers use different mechanisms for not broadcasting the
 * AP's SSID.  This function attempts to detect blank/empty SSIDs using a
 * number of known SSID-cloaking methods.
 *
 * Returns: %TRUE if the SSID is "empty", %FALSE if it is not
 **/
gboolean
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nm_utils_is_empty_ssid (const guint8 *ssid, gsize len)
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{
	/* Single white space is for Linksys APs */
	if (len == 1 && ssid[0] == ' ')
		return TRUE;

	/* Otherwise, if the entire ssid is 0, we assume it is hidden */
	while (len--) {
		if (ssid[len] != '\0')
			return FALSE;
	}
	return TRUE;
}

#define ESSID_MAX_SIZE 32

/**
 * nm_utils_escape_ssid:
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 * @ssid: (array length=len): pointer to a buffer containing the SSID data
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 * @len: length of the SSID data in @ssid
 *
 * This function does a quick printable character conversion of the SSID, simply
 * replacing embedded NULLs and non-printable characters with the hexadecimal
 * representation of that character.  Intended for debugging only, should not
 * be used for display of SSIDs.
 *
 * Returns: pointer to the escaped SSID, which uses an internal static buffer
 * and will be overwritten by subsequent calls to this function
 **/
const char *
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nm_utils_escape_ssid (const guint8 *ssid, gsize len)
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{
	static char escaped[ESSID_MAX_SIZE * 2 + 1];
	const guint8 *s = ssid;
	char *d = escaped;

	if (nm_utils_is_empty_ssid (ssid, len)) {
		memcpy (escaped, "<hidden>", sizeof ("<hidden>"));
		return escaped;
	}

	len = MIN (len, (guint32) ESSID_MAX_SIZE);
	while (len--) {
		if (*s == '\0') {
			*d++ = '\\';
			*d++ = '0';
			s++;
		} else {
			*d++ = *s++;
		}
	}
	*d = '\0';
	return escaped;
}

/**
 * nm_utils_same_ssid:
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 * @ssid1: (array length=len1): the first SSID to compare
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 * @len1: length of the SSID data in @ssid1
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 * @ssid2: (array length=len2): the second SSID to compare
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 * @len2: length of the SSID data in @ssid2
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 * @ignore_trailing_null: %TRUE to ignore one trailing NULL byte
 *
 * Earlier versions of the Linux kernel added a NULL byte to the end of the
 * SSID to enable easy printing of the SSID on the console or in a terminal,
 * but this behavior was problematic (SSIDs are simply byte arrays, not strings)
 * and thus was changed.  This function compensates for that behavior at the
 * cost of some compatibility with odd SSIDs that may legitimately have trailing
 * NULLs, even though that is functionally pointless.
 *
 * Returns: %TRUE if the SSIDs are the same, %FALSE if they are not
 **/
gboolean
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nm_utils_same_ssid (const guint8 *ssid1, gsize len1,
                    const guint8 *ssid2, gsize len2,
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                    gboolean ignore_trailing_null)
{
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	g_return_val_if_fail (ssid1 != NULL || len1 == 0, FALSE);
	g_return_val_if_fail (ssid2 != NULL || len2 == 0, FALSE);
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	if (ssid1 == ssid2 && len1 == len2)
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		return TRUE;
	if (!ssid1 || !ssid2)
		return FALSE;

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	if (ignore_trailing_null) {
		if (len1 && ssid1[len1 - 1] == '\0')
			len1--;
		if (len2 && ssid2[len2 - 1] == '\0')
			len2--;
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	}

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	if (len1 != len2)
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		return FALSE;

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	return memcmp (ssid1, ssid2, len1) == 0 ? TRUE : FALSE;
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}

gboolean
_nm_utils_string_slist_validate (GSList *list, const char **valid_values)
{
	GSList *iter;

	for (iter = list; iter; iter = iter->next) {
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		if (!g_strv_contains (valid_values, (char *) iter->data))
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			return FALSE;
	}

	return TRUE;
}

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/**
 * _nm_utils_hash_values_to_slist:
 * @hash: a #GHashTable
 *
 * Utility function to iterate over a hash table and return
 * it's values as a #GSList.
 *
 * Returns: (element-type gpointer) (transfer container): a newly allocated #GSList
 * containing the values of the hash table. The caller must free the
 * returned list with g_slist_free(). The hash values are not owned
 * by the returned list.
 **/
GSList *
_nm_utils_hash_values_to_slist (GHashTable *hash)
{
	GSList *list = NULL;
	GHashTableIter iter;
	void *value;

	g_return_val_if_fail (hash, NULL);

	g_hash_table_iter_init (&iter, hash);
	while (g_hash_table_iter_next (&iter, NULL, &value))
		 list = g_slist_prepend (list, value);

	return list;
}

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GVariant *
_nm_utils_strdict_to_dbus (const GValue *prop_value)
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{
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	GHashTable *hash;
	GHashTableIter iter;
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	const char *key, *value;
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	GVariantBuilder builder;
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	guint i, len;
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	g_variant_builder_init (&builder, G_VARIANT_TYPE ("a{ss}"));
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	hash = g_value_get_boxed (prop_value);
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	if (!hash)
		goto out;
	len = g_hash_table_size (hash);
	if (!len)
		goto out;

	g_hash_table_iter_init (&iter, hash);
	if (!g_hash_table_iter_next (&iter, (gpointer *) &key, (gpointer *) &value))
		nm_assert_not_reached ();

	if (len == 1)
		g_variant_builder_add (&builder, "{ss}", key, value);
	else {
		gs_free NMUtilsNamedValue *idx = NULL;

		idx = g_new (NMUtilsNamedValue, len);
		i = 0;
		do {
			idx[i].name = key;
			idx[i].value_str = value;
			i++;
		} while (g_hash_table_iter_next (&iter, (gpointer *) &key, (gpointer *) &value));
		nm_assert (i == len);

		g_qsort_with_data (idx, len, sizeof (idx[0]),
		                   nm_utils_named_entry_cmp_with_data, NULL);

		for (i = 0; i < len; i++)
			g_variant_builder_add (&builder, "{ss}", idx[i].name, idx[i].value_str);
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	}

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out:
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	return g_variant_builder_end (&builder);
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}

void
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_nm_utils_strdict_from_dbus (GVariant *dbus_value,
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                             GValue *prop_value)
{
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	GVariantIter iter;
	const char *key, *value;
	GHashTable *hash;

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	hash = g_hash_table_new_full (nm_str_hash, g_str_equal, g_free, g_free);
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	g_variant_iter_init (&iter, dbus_value);
	while (g_variant_iter_next (&iter, "{&s&s}", &key, &value))
		g_hash_table_insert (hash, g_strdup (key), g_strdup (value));

	g_value_take_boxed (prop_value, hash);
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}

GHashTable *
_nm_utils_copy_strdict (GHashTable *strdict)
{
	GHashTable *copy;
	GHashTableIter iter;
	gpointer key, value;

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	copy = g_hash_table_new_full (nm_str_hash, g_str_equal, g_free, g_free);
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	if (strdict) {
		g_hash_table_iter_init (&iter, strdict);
		while (g_hash_table_iter_next (&iter, &key, &value))
			g_hash_table_insert (copy, g_strdup (key), g_strdup (value));
	}
	return copy;
}

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GPtrArray *
_nm_utils_copy_slist_to_array (const GSList *list,
                               NMUtilsCopyFunc copy_func,
                               GDestroyNotify unref_func)
{
	const GSList *iter;
	GPtrArray *array;

	array = g_ptr_array_new_with_free_func (unref_func);
	for (iter = list; iter; iter = iter->next)
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		g_ptr_array_add (array, copy_func ? copy_func (iter->data) : iter->data);
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	return array;
}

GSList *
_nm_utils_copy_array_to_slist (const GPtrArray *array,
                               NMUtilsCopyFunc copy_func)
{
	GSList *slist = NULL;
	gpointer item;
	int i;

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	if (!array)
		return NULL;

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	for (i = 0; i < array->len; i++) {
		item = array->pdata[i];
		slist = g_slist_prepend (slist, copy_func (item));
	}

	return g_slist_reverse (slist);
}

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GPtrArray *
_nm_utils_copy_array (const GPtrArray *array,
                      NMUtilsCopyFunc copy_func,
                      GDestroyNotify free_func)
{
	GPtrArray *copy;
	int i;

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	if (!array)
		return g_ptr_array_new_with_free_func (free_func);

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	copy = g_ptr_array_new_full (array->len, free_func);
	for (i = 0; i < array->len; i++)
		g_ptr_array_add (copy, copy_func (array->pdata[i]));
	return copy;
}

GPtrArray *
_nm_utils_copy_object_array (const GPtrArray *array)
{
	return _nm_utils_copy_array (array, g_object_ref, g_object_unref);
}

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gssize
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_nm_utils_ptrarray_find_first (gconstpointer *list, gssize len, gconstpointer needle)
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{
	gssize i;

	if (len == 0)
		return -1;

	if (len > 0) {
		g_return_val_if_fail (list, -1);
		for (i = 0; i < len; i++) {
			if (list[i] == needle)
				return i;
		}
	} else {
		g_return_val_if_fail (needle, -1);
		for (i = 0; list && list[i]; i++) {
			if (list[i] == needle)
				return i;
		}
	}
	return -1;
}

648
gssize
649
_nm_utils_ptrarray_find_binary_search (gconstpointer *list, gsize len, gconstpointer needle, GCompareDataFunc cmpfcn, gpointer user_data)
650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680
{
	gssize imin, imax, imid;
	int cmp;

	g_return_val_if_fail (list || !len, ~((gssize) 0));
	g_return_val_if_fail (cmpfcn, ~((gssize) 0));

	imin = 0;
	if (len == 0)
		return ~imin;

	imax = len - 1;

	while (imin <= imax) {
		imid = imin + (imax - imin) / 2;

		cmp = cmpfcn (list[imid], needle, user_data);
		if (cmp == 0)
			return imid;

		if (cmp < 0)
			imin = imid + 1;
		else
			imax = imid - 1;
	}

	/* return the inverse of @imin. This is a negative number, but
	 * also is ~imin the position where the value should be inserted. */
	return ~imin;
}

681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714
gssize
_nm_utils_array_find_binary_search (gconstpointer list, gsize elem_size, gsize len, gconstpointer needle, GCompareDataFunc cmpfcn, gpointer user_data)
{
	gssize imin, imax, imid;
	int cmp;

	g_return_val_if_fail (list || !len, ~((gssize) 0));
	g_return_val_if_fail (cmpfcn, ~((gssize) 0));
	g_return_val_if_fail (elem_size > 0, ~((gssize) 0));

	imin = 0;
	if (len == 0)
		return ~imin;

	imax = len - 1;

	while (imin <= imax) {
		imid = imin + (imax - imin) / 2;

		cmp = cmpfcn (&((const char *) list)[elem_size * imid], needle, user_data);
		if (cmp == 0)
			return imid;

		if (cmp < 0)
			imin = imid + 1;
		else
			imax = imid - 1;
	}

	/* return the inverse of @imin. This is a negative number, but
	 * also is ~imin the position where the value should be inserted. */
	return ~imin;
}

715 716
GVariant *
_nm_utils_bytes_to_dbus (const GValue *prop_value)
717 718 719 720
{
	GBytes *bytes = g_value_get_boxed (prop_value);

	if (bytes) {
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		return g_variant_new_fixed_array (G_VARIANT_TYPE_BYTE,
		                                  g_bytes_get_data (bytes, NULL),
		                                  g_bytes_get_size (bytes),
		                                  1);
	} else {
		return g_variant_new_fixed_array (G_VARIANT_TYPE_BYTE,
		                                  NULL, 0,
		                                  1);
729 730 731 732
	}
}

void
733
_nm_utils_bytes_from_dbus (GVariant *dbus_value,
734 735
                           GValue *prop_value)
{
736
	GBytes *bytes;
737

738 739 740 741 742 743 744 745
	if (g_variant_n_children (dbus_value)) {
		gconstpointer data;
		gsize length;

		data = g_variant_get_fixed_array (dbus_value, &length, 1);
		bytes = g_bytes_new (data, length);
	} else
		bytes = NULL;
746 747 748
	g_value_take_boxed (prop_value, bytes);
}

749
GSList *
750
_nm_utils_strv_to_slist (char **strv, gboolean deep_copy)
751 752 753 754
{
	int i;
	GSList *list = NULL;

755
	if (strv) {
756 757 758 759 760 761 762
		if (deep_copy) {
			for (i = 0; strv[i]; i++)
				list = g_slist_prepend (list, g_strdup (strv[i]));
		} else {
			for (i = 0; strv[i]; i++)
				list = g_slist_prepend (list, strv[i]);
		}
763
	}
764 765 766 767 768

	return g_slist_reverse (list);
}

char **
769
_nm_utils_slist_to_strv (GSList *slist, gboolean deep_copy)
770 771 772
{
	GSList *iter;
	char **strv;
773
	int len, i;
774 775

	len = g_slist_length (slist);
776 777
	if (!len)
		return NULL;
778 779
	strv = g_new (char *, len + 1);

780 781 782 783 784 785 786
	if (deep_copy) {
		for (i = 0, iter = slist; iter; iter = iter->next, i++)
			strv[i] = g_strdup (iter->data);
	} else {
		for (i = 0, iter = slist; iter; iter = iter->next, i++)
			strv[i] = iter->data;
	}
787 788 789 790 791
	strv[i] = NULL;

	return strv;
}

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GPtrArray *
_nm_utils_strv_to_ptrarray (char **strv)
{
	GPtrArray *ptrarray;
	int i;

	ptrarray = g_ptr_array_new_with_free_func (g_free);

	if (strv) {
		for (i = 0; strv[i]; i++)
			g_ptr_array_add (ptrarray, g_strdup (strv[i]));
	}

	return ptrarray;
}

char **
_nm_utils_ptrarray_to_strv (GPtrArray *ptrarray)
{
	char **strv;
	int i;

	if (!ptrarray)
		return g_new0 (char *, 1);

	strv = g_new (char *, ptrarray->len + 1);

	for (i = 0; i < ptrarray->len; i++)
		strv[i] = g_strdup (ptrarray->pdata[i]);
	strv[i] = NULL;

	return strv;
}

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/**
 * _nm_utils_strv_equal:
 * @strv1: a string array
 * @strv2: a string array
 *
 * Compare NULL-terminated string arrays for equality.
 *
 * Returns: %TRUE if the arrays are equal, %FALSE otherwise.
 **/
gboolean
_nm_utils_strv_equal (char **strv1, char **strv2)
{
	if (strv1 == strv2)
		return TRUE;

	if (!strv1 || !strv2)
		return FALSE;

	for ( ; *strv1 && *strv2 && !strcmp (*strv1, *strv2); strv1++, strv2++)
		;

	return !*strv1 && !*strv2;
}

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static gboolean
device_supports_ap_ciphers (guint32 dev_caps,
                            guint32 ap_flags,
                            gboolean static_wep)
{
	gboolean have_pair = FALSE;
	gboolean have_group = FALSE;
	/* Device needs to support at least one pairwise and one group cipher */

	/* Pairwise */
	if (static_wep) {
		/* Static WEP only uses group ciphers */
		have_pair = TRUE;
	} else {
		if (dev_caps & NM_WIFI_DEVICE_CAP_CIPHER_WEP40)
			if (ap_flags & NM_802_11_AP_SEC_PAIR_WEP40)
				have_pair = TRUE;
		if (dev_caps & NM_WIFI_DEVICE_CAP_CIPHER_WEP104)
			if (ap_flags & NM_802_11_AP_SEC_PAIR_WEP104)
				have_pair = TRUE;
		if (dev_caps & NM_WIFI_DEVICE_CAP_CIPHER_TKIP)
			if (ap_flags & NM_802_11_AP_SEC_PAIR_TKIP)
				have_pair = TRUE;
		if (dev_caps & NM_WIFI_DEVICE_CAP_CIPHER_CCMP)
			if (ap_flags & NM_802_11_AP_SEC_PAIR_CCMP)
				have_pair = TRUE;
	}

	/* Group */
	if (dev_caps & NM_WIFI_DEVICE_CAP_CIPHER_WEP40)
		if (ap_flags & NM_802_11_AP_SEC_GROUP_WEP40)
			have_group = TRUE;
	if (dev_caps & NM_WIFI_DEVICE_CAP_CIPHER_WEP104)
		if (ap_flags & NM_802_11_AP_SEC_GROUP_WEP104)
			have_group = TRUE;
	if (!static_wep) {
		if (dev_caps & NM_WIFI_DEVICE_CAP_CIPHER_TKIP)
			if (ap_flags & NM_802_11_AP_SEC_GROUP_TKIP)
				have_group = TRUE;
		if (dev_caps & NM_WIFI_DEVICE_CAP_CIPHER_CCMP)
			if (ap_flags & NM_802_11_AP_SEC_GROUP_CCMP)
				have_group = TRUE;
	}

	return (have_pair && have_group);
}

/**
 * nm_utils_ap_mode_security_valid:
 * @type: the security type to check device capabilties against,
 * e.g. #NMU_SEC_STATIC_WEP
 * @wifi_caps: bitfield of the capabilities of the specific Wi-Fi device, e.g.
 * #NM_WIFI_DEVICE_CAP_CIPHER_WEP40
 *
 * Given a set of device capabilities, and a desired security type to check
 * against, determines whether the combination of device capabilities and
 * desired security type are valid for AP/Hotspot connections.
 *
 * Returns: %TRUE if the device capabilities are compatible with the desired
 * @type, %FALSE if they are not.
 **/
gboolean
nm_utils_ap_mode_security_valid (NMUtilsSecurityType type,
                                 NMDeviceWifiCapabilities wifi_caps)
{
	if (!(wifi_caps & NM_WIFI_DEVICE_CAP_AP))
		return FALSE;

	/* Return TRUE for any security that wpa_supplicant's lightweight AP
	 * mode can handle: which is open, WEP, and WPA/WPA2 PSK.
	 */
	switch (type) {
	case NMU_SEC_NONE:
	case NMU_SEC_STATIC_WEP:
	case NMU_SEC_WPA_PSK:
	case NMU_SEC_WPA2_PSK:
		return TRUE;
	default:
		break;
	}
	return FALSE;
}

/**
 * nm_utils_security_valid:
 * @type: the security type to check AP flags and device capabilties against,
 * e.g. #NMU_SEC_STATIC_WEP
 * @wifi_caps: bitfield of the capabilities of the specific Wi-Fi device, e.g.
 * #NM_WIFI_DEVICE_CAP_CIPHER_WEP40
 * @have_ap: whether the @ap_flags, @ap_wpa, and @ap_rsn arguments are valid
 * @adhoc: whether the capabilities being tested are from an Ad-Hoc AP (IBSS)
 * @ap_flags: bitfield of AP capabilities, e.g. #NM_802_11_AP_FLAGS_PRIVACY
 * @ap_wpa: bitfield of AP capabilties derived from the AP's WPA beacon,
 * e.g. (#NM_802_11_AP_SEC_PAIR_TKIP | #NM_802_11_AP_SEC_KEY_MGMT_PSK)
 * @ap_rsn: bitfield of AP capabilties derived from the AP's RSN/WPA2 beacon,
 * e.g. (#NM_802_11_AP_SEC_PAIR_CCMP | #NM_802_11_AP_SEC_PAIR_TKIP)
 *
 * Given a set of device capabilities, and a desired security type to check
 * against, determines whether the combination of device, desired security
 * type, and AP capabilities intersect.
 *
 * NOTE: this function cannot handle checking security for AP/Hotspot mode;
 * use nm_utils_ap_mode_security_valid() instead.
 *
 * Returns: %TRUE if the device capabilities and AP capabilties intersect and are
 * compatible with the desired @type, %FALSE if they are not
 **/
gboolean
nm_utils_security_valid (NMUtilsSecurityType type,
                         NMDeviceWifiCapabilities wifi_caps,
                         gboolean have_ap,
                         gboolean adhoc,
                         NM80211ApFlags ap_flags,
                         NM80211ApSecurityFlags ap_wpa,
                         NM80211ApSecurityFlags ap_rsn)
{
	gboolean good = TRUE;

	if (!have_ap) {
		if (type == NMU_SEC_NONE)
			return TRUE;
		if (   (type == NMU_SEC_STATIC_WEP)
		    || ((type == NMU_SEC_DYNAMIC_WEP) && !adhoc)
		    || ((type == NMU_SEC_LEAP) && !adhoc)) {
			if (wifi_caps & (NM_WIFI_DEVICE_CAP_CIPHER_WEP40 | NM_WIFI_DEVICE_CAP_CIPHER_WEP104))
				return TRUE;
			else
				return FALSE;
		}
	}

	switch (type) {
	case NMU_SEC_NONE:
		g_assert (have_ap);
		if (ap_flags & NM_802_11_AP_FLAGS_PRIVACY)
			return FALSE;
		if (ap_wpa || ap_rsn)
			return FALSE;
		break;
	case NMU_SEC_LEAP: /* require PRIVACY bit for LEAP? */
		if (adhoc)
			return FALSE;
992
		/* fall through */
993 994 995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 1068 1069 1070 1071 1072 1073 1074 1075 1076 1077 1078 1079 1080 1081 1082 1083 1084 1085 1086 1087 1088 1089 1090 1091 1092 1093 1094 1095 1096 1097 1098 1099 1100 1101 1102 1103 1104 1105 1106 1107 1108 1109 1110 1111 1112 1113 1114 1115 1116 1117 1118 1119 1120 1121 1122 1123
	case NMU_SEC_STATIC_WEP:
		g_assert (have_ap);
		if (!(ap_flags & NM_802_11_AP_FLAGS_PRIVACY))
			return FALSE;
		if (ap_wpa || ap_rsn) {
			if (!device_supports_ap_ciphers (wifi_caps, ap_wpa, TRUE))
				if (!device_supports_ap_ciphers (wifi_caps, ap_rsn, TRUE))
					return FALSE;
		}
		break;
	case NMU_SEC_DYNAMIC_WEP:
		if (adhoc)
			return FALSE;
		g_assert (have_ap);
		if (ap_rsn || !(ap_flags & NM_802_11_AP_FLAGS_PRIVACY))
			return FALSE;
		/* Some APs broadcast minimal WPA-enabled beacons that must be handled */
		if (ap_wpa) {
			if (!(ap_wpa & NM_802_11_AP_SEC_KEY_MGMT_802_1X))
				return FALSE;
			if (!device_supports_ap_ciphers (wifi_caps, ap_wpa, FALSE))
				return FALSE;
		}
		break;
	case NMU_SEC_WPA_PSK:
		if (adhoc)
			return FALSE;  /* FIXME: Kernel WPA Ad-Hoc support is buggy */
		if (!(wifi_caps & NM_WIFI_DEVICE_CAP_WPA))
			return FALSE;
		if (have_ap) {
			/* Ad-Hoc WPA APs won't necessarily have the PSK flag set, and
			 * they don't have any pairwise ciphers. */
			if (adhoc) {
				/* coverity[dead_error_line] */
				if (   (ap_wpa & NM_802_11_AP_SEC_GROUP_TKIP)
				    && (wifi_caps & NM_WIFI_DEVICE_CAP_CIPHER_TKIP))
					return TRUE;
				if (   (ap_wpa & NM_802_11_AP_SEC_GROUP_CCMP)
				    && (wifi_caps & NM_WIFI_DEVICE_CAP_CIPHER_CCMP))
					return TRUE;
			} else {
				if (ap_wpa & NM_802_11_AP_SEC_KEY_MGMT_PSK) {
					if (   (ap_wpa & NM_802_11_AP_SEC_PAIR_TKIP)
					    && (wifi_caps & NM_WIFI_DEVICE_CAP_CIPHER_TKIP))
						return TRUE;
					if (   (ap_wpa & NM_802_11_AP_SEC_PAIR_CCMP)
					    && (wifi_caps & NM_WIFI_DEVICE_CAP_CIPHER_CCMP))
						return TRUE;
				}
			}
			return FALSE;
		}
		break;
	case NMU_SEC_WPA2_PSK:
		if (adhoc)
			return FALSE;  /* FIXME: Kernel WPA Ad-Hoc support is buggy */
		if (!(wifi_caps & NM_WIFI_DEVICE_CAP_RSN))
			return FALSE;
		if (have_ap) {
			/* Ad-Hoc WPA APs won't necessarily have the PSK flag set, and
			 * they don't have any pairwise ciphers, nor any RSA flags yet. */
			if (adhoc) {
				/* coverity[dead_error_line] */
				if (wifi_caps & NM_WIFI_DEVICE_CAP_CIPHER_TKIP)
					return TRUE;
				if (wifi_caps & NM_WIFI_DEVICE_CAP_CIPHER_CCMP)
					return TRUE;
			} else {
				if (ap_rsn & NM_802_11_AP_SEC_KEY_MGMT_PSK) {
					if (   (ap_rsn & NM_802_11_AP_SEC_PAIR_TKIP)
					    && (wifi_caps & NM_WIFI_DEVICE_CAP_CIPHER_TKIP))
						return TRUE;
					if (   (ap_rsn & NM_802_11_AP_SEC_PAIR_CCMP)
					    && (wifi_caps & NM_WIFI_DEVICE_CAP_CIPHER_CCMP))
						return TRUE;
				}
			}
			return FALSE;
		}
		break;
	case NMU_SEC_WPA_ENTERPRISE:
		if (adhoc)
			return FALSE;
		if (!(wifi_caps & NM_WIFI_DEVICE_CAP_WPA))
			return FALSE;
		if (have_ap) {
			if (!(ap_wpa & NM_802_11_AP_SEC_KEY_MGMT_802_1X))
				return FALSE;
			/* Ensure at least one WPA cipher is supported */
			if (!device_supports_ap_ciphers (wifi_caps, ap_wpa, FALSE))
				return FALSE;
		}
		break;
	case NMU_SEC_WPA2_ENTERPRISE:
		if (adhoc)
			return FALSE;
		if (!(wifi_caps & NM_WIFI_DEVICE_CAP_RSN))
			return FALSE;
		if (have_ap) {
			if (!(ap_rsn & NM_802_11_AP_SEC_KEY_MGMT_802_1X))
				return FALSE;
			/* Ensure at least one WPA cipher is supported */
			if (!device_supports_ap_ciphers (wifi_caps, ap_rsn, FALSE))
				return FALSE;
		}
		break;
	default:
		good = FALSE;
		break;
	}

	return good;
}

/**
 * nm_utils_wep_key_valid:
 * @key: a string that might be a WEP key
 * @wep_type: the #NMWepKeyType type of the WEP key
 *
 * Checks if @key is a valid WEP key
 *
 * Returns: %TRUE if @key is a WEP key, %FALSE if not
 */
gboolean
nm_utils_wep_key_valid (const char *key, NMWepKeyType wep_type)
{
	int keylen, i;

	if (!key)
		return FALSE;

1124 1125 1126 1127 1128
	if (wep_type == NM_WEP_KEY_TYPE_UNKNOWN) {
		return nm_utils_wep_key_valid (key, NM_WEP_KEY_TYPE_KEY) ||
		       nm_utils_wep_key_valid (key, NM_WEP_KEY_TYPE_PASSPHRASE);
	}

1129
	keylen = strlen (key);
1130
	if (wep_type == NM_WEP_KEY_TYPE_KEY) {
1131 1132 1133 1134 1135 1136 1137 1138 1139 1140 1141 1142 1143 1144 1145 1146 1147 1148 1149 1150 1151 1152 1153 1154 1155 1156 1157 1158 1159 1160 1161 1162 1163 1164 1165 1166 1167 1168 1169 1170 1171 1172 1173 1174 1175 1176 1177 1178 1179 1180 1181 1182 1183
		if (keylen == 10 || keylen == 26) {
			/* Hex key */
			for (i = 0; i < keylen; i++) {
				if (!g_ascii_isxdigit (key[i]))
					return FALSE;
			}
		} else if (keylen == 5 || keylen == 13) {
			/* ASCII key */
			for (i = 0; i < keylen; i++) {
				if (!g_ascii_isprint (key[i]))
					return FALSE;
			}
		} else
			return FALSE;
	} else if (wep_type == NM_WEP_KEY_TYPE_PASSPHRASE) {
		if (!keylen || keylen > 64)
			return FALSE;
	}

	return TRUE;
}

/**
 * nm_utils_wpa_psk_valid:
 * @psk: a string that might be a WPA PSK
 *
 * Checks if @psk is a valid WPA PSK
 *
 * Returns: %TRUE if @psk is a WPA PSK, %FALSE if not
 */
gboolean
nm_utils_wpa_psk_valid (const char *psk)
{
	int psklen, i;

	if (!psk)
		return FALSE;

	psklen = strlen (psk);
	if (psklen < 8 || psklen > 64)
		return FALSE;

	if (psklen == 64) {
		/* Hex PSK */
		for (i = 0; i < psklen; i++) {
			if (!g_ascii_isxdigit (psk[i]))
				return FALSE;
		}
	}

	return TRUE;
}

1184 1185 1186 1187 1188 1189 1190 1191 1192 1193 1194 1195 1196 1197 1198 1199 1200 1201 1202 1203 1204 1205 1206 1207 1208 1209 1210 1211 1212 1213 1214 1215 1216 1217 1218 1219 1220 1221 1222 1223 1224 1225 1226 1227 1228 1229 1230 1231 1232 1233 1234 1235 1236 1237 1238 1239 1240 1241 1242 1243
/**
 * nm_utils_ip4_dns_to_variant:
 * @dns: (type utf8): an array of IP address strings
 *
 * Utility function to convert an array of IP address strings int a #GVariant of
 * type 'au' representing an array of IPv4 addresses.
 *
 * Returns: (transfer none): a new floating #GVariant representing @dns.
 **/
GVariant *
nm_utils_ip4_dns_to_variant (char **dns)
{
	GVariantBuilder builder;
	int i;

	g_variant_builder_init (&builder, G_VARIANT_TYPE ("au"));

	if (dns) {
		for (i = 0; dns[i]; i++) {
			guint32 ip = 0;

			inet_pton (AF_INET, dns[i], &ip);
			g_variant_builder_add (&builder, "u", ip);
		}
	}

	return g_variant_builder_end (&builder);
}

/**
 * nm_utils_ip4_dns_from_variant:
 * @value: a #GVariant of type 'au'
 *
 * Utility function to convert a #GVariant of type 'au' representing a list of
 * IPv4 addresses into an array of IP address strings.
 *
 * Returns: (transfer full) (type utf8): a %NULL-terminated array of IP address strings.
 **/
char **
nm_utils_ip4_dns_from_variant (GVariant *value)
{
	const guint32 *array;
	gsize length;
	char **dns;
	int i;

	g_return_val_if_fail (g_variant_is_of_type (value, G_VARIANT_TYPE ("au")), NULL);

	array = g_variant_get_fixed_array (value, &length, sizeof (guint32));
	dns = g_new (char *, length + 1);

	for (i = 0; i < length; i++)
		dns[i] = g_strdup (nm_utils_inet4_ntop (array[i], NULL));
	dns[i] = NULL;

	return dns;
}

/**
 * nm_utils_ip4_addresses_to_variant:
1244
 * @addresses: (element-type NMIPAddress): an array of #NMIPAddress objects
1245
 * @gateway: (allow-none): the gateway IP address
1246
 *
1247 1248 1249
 * Utility function to convert a #GPtrArray of #NMIPAddress objects representing
 * IPv4 addresses into a #GVariant of type 'aau' representing an array of
 * NetworkManager IPv4 addresses (which are tuples of address, prefix, and
1250 1251
 * gateway). The "gateway" field of the first address will get the value of
 * @gateway (if non-%NULL). In all of the other addresses, that field will be 0.
1252 1253 1254 1255
 *
 * Returns: (transfer none): a new floating #GVariant representing @addresses.
 **/
GVariant *
1256
nm_utils_ip4_addresses_to_variant (GPtrArray *addresses, const char *gateway)
1257 1258 1259 1260 1261 1262 1263 1264
{
	GVariantBuilder builder;
	int i;

	g_variant_builder_init (&builder, G_VARIANT_TYPE ("aau"));

	if (addresses) {
		for (i = 0; i < addresses->len; i++) {
1265
			NMIPAddress *addr = addresses->pdata[i];
1266 1267
			guint32 array[3];

1268 1269 1270 1271 1272
			if (nm_ip_address_get_family (addr) != AF_INET)
				continue;

			nm_ip_address_get_address_binary (addr, &array[0]);
			array[1] = nm_ip_address_get_prefix (addr);
1273 1274
			if (i == 0 && gateway)
				inet_pton (AF_INET, gateway, &array[2]);
1275 1276
			else
				array[2] = 0;
1277 1278 1279 1280 1281 1282 1283 1284 1285 1286 1287 1288 1289

			g_variant_builder_add (&builder, "@au",
			                       g_variant_new_fixed_array (G_VARIANT_TYPE_UINT32,
			                                                  array, 3, sizeof (guint32)));
		}
	}

	return g_variant_builder_end (&builder);
}

/**
 * nm_utils_ip4_addresses_from_variant:
 * @value: a #GVariant of type 'aau'
1290
 * @out_gateway: (out) (allow-none) (transfer full): on return, will contain the IP gateway
1291 1292 1293
 *
 * Utility function to convert a #GVariant of type 'aau' representing a list of
 * NetworkManager IPv4 addresses (which are tuples of address, prefix, and
1294 1295 1296
 * gateway) into a #GPtrArray of #NMIPAddress objects. The "gateway" field of
 * the first address (if set) will be returned in @out_gateway; the "gateway" fields
 * of the other addresses are ignored.
1297
 *
1298 1299
 * Returns: (transfer full) (element-type NMIPAddress): a newly allocated
 *   #GPtrArray of #NMIPAddress objects
1300 1301
 **/
GPtrArray *
1302
nm_utils_ip4_addresses_from_variant (GVariant *value, char **out_gateway)
1303 1304 1305 1306 1307 1308 1309
{
	GPtrArray *addresses;
	GVariantIter iter;
	GVariant *addr_var;

	g_return_val_if_fail (g_variant_is_of_type (value, G_VARIANT_TYPE ("aau")), NULL);

1310 1311 1312
	if (out_gateway)
		*out_gateway = NULL;

1313
	g_variant_iter_init (&iter, value);
1314
	addresses = g_ptr_array_new_with_free_func ((GDestroyNotify) nm_ip_address_unref);
1315 1316 1317 1318

	while (g_variant_iter_next (&iter, "@au", &addr_var)) {
		const guint32 *addr_array;
		gsize length;
1319 1320
		NMIPAddress *addr;
		GError *error = NULL;
1321 1322 1323 1324 1325 1326 1327 1328

		addr_array = g_variant_get_fixed_array (addr_var, &length, sizeof (guint32));
		if (length < 3) {
			g_warning ("Ignoring invalid IP4 address");
			g_variant_unref (addr_var);
			continue;
		}

1329
		addr = nm_ip_address_new_binary (AF_INET, &addr_array[0], addr_array[1], &error);
1330
		if (addr) {
1331
			g_ptr_array_add (addresses, addr);
1332 1333 1334 1335

			if (addr_array[2] && out_gateway && !*out_gateway)
				*out_gateway = g_strdup (nm_utils_inet4_ntop (addr_array[2], NULL));
		} else {
1336 1337 1338
			g_warning ("Ignoring invalid IP4 address: %s", error->message);
			g_clear_error (&error);
		}
1339

1340 1341 1342 1343 1344 1345 1346 1347
		g_variant_unref (addr_var);
	}

	return addresses;
}

/**
 * nm_utils_ip4_routes_to_variant:
1348
 * @routes: (element-type NMIPRoute): an array of #NMIP4Route objects
1349
 *
1350 1351 1352 1353
 * Utility function to convert a #GPtrArray of #NMIPRoute objects representing
 * IPv4 routes into a #GVariant of type 'aau' representing an array of
 * NetworkManager IPv4 routes (which are tuples of route, prefix, next hop, and
 * metric).
1354 1355 1356 1357 1358 1359 1360 1361 1362 1363 1364 1365 1366
 *
 * Returns: (transfer none): a new floating #GVariant representing @routes.
 **/
GVariant *
nm_utils_ip4_routes_to_variant (GPtrArray *routes)
{
	GVariantBuilder builder;
	int i;

	g_variant_builder_init (&builder, G_VARIANT_TYPE ("aau"));

	if (routes) {
		for (i = 0; i < routes->len; i++) {
1367
			NMIPRoute *route = routes->pdata[i];
1368 1369
			guint32 array[4];

1370 1371 1372 1373 1374 1375
			if (nm_ip_route_get_family (route) != AF_INET)
				continue;

			nm_ip_route_get_dest_binary (route, &array[0]);
			array[1] = nm_ip_route_get_prefix (route);
			nm_ip_route_get_next_hop_binary (route, &array[2]);
1376 1377
			/* The old routes format uses "0" for default, not "-1" */
			array[3] = MAX (0, nm_ip_route_get_metric (route));
1378 1379 1380 1381 1382 1383 1384 1385 1386 1387 1388 1389 1390 1391 1392 1393

			g_variant_builder_add (&builder, "@au",
			                       g_variant_new_fixed_array (G_VARIANT_TYPE_UINT32,
			                                                  array, 4, sizeof (guint32)));
		}
	}

	return g_variant_builder_end (&builder);
}

/**
 * nm_utils_ip4_routes_from_variant:
 * @value: #GVariant of type 'aau'
 *
 * Utility function to convert a #GVariant of type 'aau' representing an array
 * of NetworkManager IPv4 routes (which are tuples of route, prefix, next hop,
1394
 * and metric) into a #GPtrArray of #NMIPRoute objects.
1395
 *
1396 1397
 * Returns: (transfer full) (element-type NMIPRoute): a newly allocated
 *   #GPtrArray of #NMIPRoute objects
1398 1399 1400 1401 1402 1403 1404 1405 1406 1407 1408
 **/
GPtrArray *
nm_utils_ip4_routes_from_variant (GVariant *value)
{
	GVariantIter iter;
	GVariant *route_var;
	GPtrArray *routes;

	g_return_val_if_fail (g_variant_is_of_type (value, G_VARIANT_TYPE ("aau")), NULL);

	g_variant_iter_init (&iter, value);
1409
	routes = g_ptr_array_new_with_free_func ((GDestroyNotify) nm_ip_route_unref);
1410 1411 1412 1413

	while (g_variant_iter_next (&iter, "@au", &route_var)) {
		const guint32 *route_array;
		gsize length;
1414 1415
		NMIPRoute *route;
		GError *error = NULL;