diff options
Diffstat (limited to 'src/core/platform/wifi')
| -rw-r--r-- | src/core/platform/wifi/nm-wifi-utils-nl80211.c | 909 | ||||
| -rw-r--r-- | src/core/platform/wifi/nm-wifi-utils-nl80211.h | 29 | ||||
| -rw-r--r-- | src/core/platform/wifi/nm-wifi-utils-private.h | 66 | ||||
| -rw-r--r-- | src/core/platform/wifi/nm-wifi-utils-wext.c | 836 | ||||
| -rw-r--r-- | src/core/platform/wifi/nm-wifi-utils-wext.h | 28 | ||||
| -rw-r--r-- | src/core/platform/wifi/nm-wifi-utils.c | 211 | ||||
| -rw-r--r-- | src/core/platform/wifi/nm-wifi-utils.h | 74 |
7 files changed, 2153 insertions, 0 deletions
diff --git a/src/core/platform/wifi/nm-wifi-utils-nl80211.c b/src/core/platform/wifi/nm-wifi-utils-nl80211.c new file mode 100644 index 00000000..ad067248 --- /dev/null +++ b/src/core/platform/wifi/nm-wifi-utils-nl80211.c @@ -0,0 +1,909 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ +/* + * Copyright (C) 2005 - 2018 Red Hat, Inc. + * Copyright (C) 2006 - 2008 Novell, Inc. + * Copyright (C) 2011 Intel Corporation. All rights reserved. + */ + +#include "src/core/nm-default-daemon.h" + +#include "nm-wifi-utils-nl80211.h" + +#include <sys/ioctl.h> +#include <net/ethernet.h> +#include <unistd.h> +#include <linux/nl80211.h> +#include <linux/if.h> + +#include "nm-platform/nm-netlink.h" +#include "nm-wifi-utils-private.h" +#include "platform/nm-platform.h" +#include "nm-platform/nm-platform-utils.h" +#include "nm-utils.h" + +#define _NMLOG_PREFIX_NAME "wifi-nl80211" +#define _NMLOG_DOMAIN LOGD_PLATFORM | LOGD_WIFI +#define _NMLOG(level, ...) \ + G_STMT_START \ + { \ + char _ifname_buf[IFNAMSIZ]; \ + const char *_ifname = \ + self ? nmp_utils_if_indextoname(self->parent.ifindex, _ifname_buf) : NULL; \ + \ + nm_log((level), \ + _NMLOG_DOMAIN, \ + _ifname ?: NULL, \ + NULL, \ + "%s%s%s%s: " _NM_UTILS_MACRO_FIRST(__VA_ARGS__), \ + _NMLOG_PREFIX_NAME, \ + NM_PRINT_FMT_QUOTED(_ifname, " (", _ifname, ")", "") \ + _NM_UTILS_MACRO_REST(__VA_ARGS__)); \ + } \ + G_STMT_END + +typedef struct { + NMWifiUtils parent; + struct nl_sock *nl_sock; + guint32 * freqs; + int id; + int num_freqs; + int phy; + bool can_wowlan : 1; +} NMWifiUtilsNl80211; + +typedef struct { + NMWifiUtilsClass parent; +} NMWifiUtilsNl80211Class; + +G_DEFINE_TYPE(NMWifiUtilsNl80211, nm_wifi_utils_nl80211, NM_TYPE_WIFI_UTILS) + +static int +ack_handler(struct nl_msg *msg, void *arg) +{ + int *done = arg; + *done = 1; + return NL_STOP; +} + +static int +finish_handler(struct nl_msg *msg, void *arg) +{ + int *done = arg; + *done = 1; + return NL_SKIP; +} + +static int +error_handler(struct sockaddr_nl *nla, struct nlmsgerr *err, void *arg) +{ + int *done = arg; + *done = err->error; + return NL_SKIP; +} + +static struct nl_msg * +_nl80211_alloc_msg(int id, int ifindex, int phy, guint32 cmd, guint32 flags) +{ + nm_auto_nlmsg struct nl_msg *msg = NULL; + + msg = nlmsg_alloc(); + genlmsg_put(msg, 0, 0, id, 0, flags, cmd, 0); + NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex); + if (phy != -1) + NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, phy); + return g_steal_pointer(&msg); + +nla_put_failure: + g_return_val_if_reached(NULL); +} + +static struct nl_msg * +nl80211_alloc_msg(NMWifiUtilsNl80211 *self, guint32 cmd, guint32 flags) +{ + return _nl80211_alloc_msg(self->id, self->parent.ifindex, self->phy, cmd, flags); +} + +static int +nl80211_send_and_recv(NMWifiUtilsNl80211 *self, + struct nl_msg * msg, + int (*valid_handler)(struct nl_msg *, void *), + void *valid_data) +{ + int err; + int done = 0; + const struct nl_cb cb = { + .err_cb = error_handler, + .err_arg = &done, + .finish_cb = finish_handler, + .finish_arg = &done, + .ack_cb = ack_handler, + .ack_arg = &done, + .valid_cb = valid_handler, + .valid_arg = valid_data, + }; + + g_return_val_if_fail(msg != NULL, -ENOMEM); + + err = nl_send_auto(self->nl_sock, msg); + if (err < 0) + return err; + + /* Loop until one of our NL callbacks says we're done; on success + * done will be 1, on error it will be < 0. + */ + while (!done) { + err = nl_recvmsgs(self->nl_sock, &cb); + if (err < 0 && err != -EAGAIN) { + /* Kernel scan list can change while we are dumping it, as new scan + * results from H/W can arrive. BSS info is assured to be consistent + * and we don't need consistent view of whole scan list. Hence do + * not warn on DUMP_INTR error for get scan command. + */ + if (err == -NME_NL_DUMP_INTR + && genlmsg_hdr(nlmsg_hdr(msg))->cmd == NL80211_CMD_GET_SCAN) + break; + + _LOGW("nl_recvmsgs() error: (%d) %s", err, nm_strerror(err)); + break; + } + } + + if (err >= 0 && done < 0) + err = done; + return err; +} + +static void +dispose(GObject *object) +{ + NMWifiUtilsNl80211 *self = NM_WIFI_UTILS_NL80211(object); + + nm_clear_g_free(&self->freqs); +} + +struct nl80211_iface_info { + NM80211Mode mode; + uint32_t freq; +}; + +static int +nl80211_iface_info_handler(struct nl_msg *msg, void *arg) +{ + struct nl80211_iface_info *info = arg; + struct genlmsghdr * gnlh = nlmsg_data(nlmsg_hdr(msg)); + struct nlattr * tb[NL80211_ATTR_MAX + 1]; + + if (nla_parse_arr(tb, genlmsg_attrdata(gnlh, 0), genlmsg_attrlen(gnlh, 0), NULL) < 0) + return NL_SKIP; + + if (!tb[NL80211_ATTR_IFTYPE]) + return NL_SKIP; + + switch (nla_get_u32(tb[NL80211_ATTR_IFTYPE])) { + case NL80211_IFTYPE_ADHOC: + info->mode = NM_802_11_MODE_ADHOC; + break; + case NL80211_IFTYPE_AP: + info->mode = NM_802_11_MODE_AP; + break; + case NL80211_IFTYPE_STATION: + info->mode = NM_802_11_MODE_INFRA; + break; + case NL80211_IFTYPE_MESH_POINT: + info->mode = NM_802_11_MODE_MESH; + break; + } + + if (tb[NL80211_ATTR_WIPHY_FREQ] != NULL) + info->freq = nla_get_u32(tb[NL80211_ATTR_WIPHY_FREQ]); + + return NL_SKIP; +} + +static NM80211Mode +wifi_nl80211_get_mode(NMWifiUtils *data) +{ + NMWifiUtilsNl80211 * self = (NMWifiUtilsNl80211 *) data; + struct nl80211_iface_info iface_info = { + .mode = NM_802_11_MODE_UNKNOWN, + }; + nm_auto_nlmsg struct nl_msg *msg = NULL; + + msg = nl80211_alloc_msg(self, NL80211_CMD_GET_INTERFACE, 0); + + if (nl80211_send_and_recv(self, msg, nl80211_iface_info_handler, &iface_info) < 0) + return NM_802_11_MODE_UNKNOWN; + + return iface_info.mode; +} + +static gboolean +wifi_nl80211_set_mode(NMWifiUtils *data, const NM80211Mode mode) +{ + NMWifiUtilsNl80211 * self = (NMWifiUtilsNl80211 *) data; + nm_auto_nlmsg struct nl_msg *msg = NULL; + int err; + + msg = nl80211_alloc_msg(self, NL80211_CMD_SET_INTERFACE, 0); + + switch (mode) { + case NM_802_11_MODE_INFRA: + NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, NL80211_IFTYPE_STATION); + break; + case NM_802_11_MODE_ADHOC: + NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, NL80211_IFTYPE_ADHOC); + break; + case NM_802_11_MODE_AP: + NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, NL80211_IFTYPE_AP); + break; + case NM_802_11_MODE_MESH: + NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, NL80211_IFTYPE_MESH_POINT); + break; + default: + g_assert_not_reached(); + } + + err = nl80211_send_and_recv(self, msg, NULL, NULL); + return err >= 0; + +nla_put_failure: + g_return_val_if_reached(FALSE); +} + +static gboolean +wifi_nl80211_set_powersave(NMWifiUtils *data, guint32 powersave) +{ + NMWifiUtilsNl80211 * self = (NMWifiUtilsNl80211 *) data; + nm_auto_nlmsg struct nl_msg *msg = NULL; + int err; + + msg = nl80211_alloc_msg(self, NL80211_CMD_SET_POWER_SAVE, 0); + NLA_PUT_U32(msg, + NL80211_ATTR_PS_STATE, + powersave == 1 ? NL80211_PS_ENABLED : NL80211_PS_DISABLED); + err = nl80211_send_and_recv(self, msg, NULL, NULL); + return err >= 0; + +nla_put_failure: + g_return_val_if_reached(FALSE); +} + +static int +nl80211_get_wake_on_wlan_handler(struct nl_msg *msg, void *arg) +{ + NMSettingWirelessWakeOnWLan *wowl = arg; + struct nlattr * attrs[NL80211_ATTR_MAX + 1]; + struct nlattr * trig[NUM_NL80211_WOWLAN_TRIG]; + struct genlmsghdr * gnlh = nlmsg_data(nlmsg_hdr(msg)); + + nla_parse_arr(attrs, genlmsg_attrdata(gnlh, 0), genlmsg_attrlen(gnlh, 0), NULL); + + if (!attrs[NL80211_ATTR_WOWLAN_TRIGGERS]) + return NL_SKIP; + + nla_parse_arr(trig, + nla_data(attrs[NL80211_ATTR_WOWLAN_TRIGGERS]), + nla_len(attrs[NL80211_ATTR_WOWLAN_TRIGGERS]), + NULL); + + *wowl = NM_SETTING_WIRELESS_WAKE_ON_WLAN_NONE; + if (trig[NL80211_WOWLAN_TRIG_ANY]) + *wowl |= NM_SETTING_WIRELESS_WAKE_ON_WLAN_ANY; + if (trig[NL80211_WOWLAN_TRIG_DISCONNECT]) + *wowl |= NM_SETTING_WIRELESS_WAKE_ON_WLAN_DISCONNECT; + if (trig[NL80211_WOWLAN_TRIG_MAGIC_PKT]) + *wowl |= NM_SETTING_WIRELESS_WAKE_ON_WLAN_MAGIC; + if (trig[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE]) + *wowl |= NM_SETTING_WIRELESS_WAKE_ON_WLAN_GTK_REKEY_FAILURE; + if (trig[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST]) + *wowl |= NM_SETTING_WIRELESS_WAKE_ON_WLAN_EAP_IDENTITY_REQUEST; + if (trig[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE]) + *wowl |= NM_SETTING_WIRELESS_WAKE_ON_WLAN_4WAY_HANDSHAKE; + if (trig[NL80211_WOWLAN_TRIG_RFKILL_RELEASE]) + *wowl |= NM_SETTING_WIRELESS_WAKE_ON_WLAN_RFKILL_RELEASE; + if (trig[NL80211_WOWLAN_TRIG_TCP_CONNECTION]) + *wowl |= NM_SETTING_WIRELESS_WAKE_ON_WLAN_TCP; + + return NL_SKIP; +} + +static NMSettingWirelessWakeOnWLan +wifi_nl80211_get_wake_on_wlan(NMWifiUtils *data) +{ + NMWifiUtilsNl80211 * self = (NMWifiUtilsNl80211 *) data; + NMSettingWirelessWakeOnWLan wowl = NM_SETTING_WIRELESS_WAKE_ON_WLAN_IGNORE; + nm_auto_nlmsg struct nl_msg *msg = NULL; + + msg = nl80211_alloc_msg(self, NL80211_CMD_GET_WOWLAN, 0); + + nl80211_send_and_recv(self, msg, nl80211_get_wake_on_wlan_handler, &wowl); + + return wowl; +} + +static gboolean +wifi_nl80211_set_wake_on_wlan(NMWifiUtils *data, NMSettingWirelessWakeOnWLan wowl) +{ + NMWifiUtilsNl80211 * self = (NMWifiUtilsNl80211 *) data; + nm_auto_nlmsg struct nl_msg *msg = NULL; + struct nlattr * triggers; + int err; + + if (wowl == NM_SETTING_WIRELESS_WAKE_ON_WLAN_IGNORE) + return TRUE; + + msg = nl80211_alloc_msg(self, NL80211_CMD_SET_WOWLAN, 0); + + triggers = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS); + if (!triggers) + goto nla_put_failure; + + if (NM_FLAGS_HAS(wowl, NM_SETTING_WIRELESS_WAKE_ON_WLAN_ANY)) + NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_ANY); + if (NM_FLAGS_HAS(wowl, NM_SETTING_WIRELESS_WAKE_ON_WLAN_DISCONNECT)) + NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_DISCONNECT); + if (NM_FLAGS_HAS(wowl, NM_SETTING_WIRELESS_WAKE_ON_WLAN_MAGIC)) + NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT); + if (NM_FLAGS_HAS(wowl, NM_SETTING_WIRELESS_WAKE_ON_WLAN_GTK_REKEY_FAILURE)) + NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE); + if (NM_FLAGS_HAS(wowl, NM_SETTING_WIRELESS_WAKE_ON_WLAN_EAP_IDENTITY_REQUEST)) + NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST); + if (NM_FLAGS_HAS(wowl, NM_SETTING_WIRELESS_WAKE_ON_WLAN_4WAY_HANDSHAKE)) + NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE); + if (NM_FLAGS_HAS(wowl, NM_SETTING_WIRELESS_WAKE_ON_WLAN_RFKILL_RELEASE)) + NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE); + + nla_nest_end(msg, triggers); + + err = nl80211_send_and_recv(self, msg, NULL, NULL); + + return err >= 0; + +nla_put_failure: + g_return_val_if_reached(FALSE); +} + +static guint32 +wifi_nl80211_get_freq(NMWifiUtils *data) +{ + NMWifiUtilsNl80211 * self = (NMWifiUtilsNl80211 *) data; + struct nl80211_iface_info iface_info = {}; + nm_auto_nlmsg struct nl_msg *msg = NULL; + + msg = nl80211_alloc_msg(self, NL80211_CMD_GET_INTERFACE, 0); + + if (nl80211_send_and_recv(self, msg, nl80211_iface_info_handler, &iface_info) < 0) + return 0; + + return iface_info.freq; +} + +static guint32 +wifi_nl80211_find_freq(NMWifiUtils *data, const guint32 *freqs) +{ + NMWifiUtilsNl80211 *self = (NMWifiUtilsNl80211 *) data; + int i; + + for (i = 0; i < self->num_freqs; i++) { + while (*freqs) { + if (self->freqs[i] == *freqs) + return *freqs; + freqs++; + } + } + return 0; +} + +/* @divisor: pass what value @xbm should be divided by to get dBm */ +static guint32 +nl80211_xbm_to_percent(gint32 xbm, guint32 divisor) +{ +#define NOISE_FLOOR_DBM -90 +#define SIGNAL_MAX_DBM -20 + + xbm /= divisor; + xbm = CLAMP(xbm, NOISE_FLOOR_DBM, SIGNAL_MAX_DBM); + + return 100 + - 70 + * (((float) SIGNAL_MAX_DBM - (float) xbm) + / ((float) SIGNAL_MAX_DBM - (float) NOISE_FLOOR_DBM)); +} + +struct nl80211_station_info { + gboolean valid; + guint8 bssid[ETH_ALEN]; + guint32 txrate; + gboolean txrate_valid; + guint8 signal; + gboolean signal_valid; +}; + +static int +nl80211_station_dump_handler(struct nl_msg *msg, void *arg) +{ + static const struct nla_policy stats_policy[] = { + [NL80211_STA_INFO_INACTIVE_TIME] = {.type = NLA_U32}, + [NL80211_STA_INFO_RX_BYTES] = {.type = NLA_U32}, + [NL80211_STA_INFO_TX_BYTES] = {.type = NLA_U32}, + [NL80211_STA_INFO_RX_PACKETS] = {.type = NLA_U32}, + [NL80211_STA_INFO_TX_PACKETS] = {.type = NLA_U32}, + [NL80211_STA_INFO_SIGNAL] = {.type = NLA_U8}, + [NL80211_STA_INFO_TX_BITRATE] = {.type = NLA_NESTED}, + [NL80211_STA_INFO_LLID] = {.type = NLA_U16}, + [NL80211_STA_INFO_PLID] = {.type = NLA_U16}, + [NL80211_STA_INFO_PLINK_STATE] = {.type = NLA_U8}, + [NL80211_STA_INFO_STA_FLAGS] = {.minlen = sizeof(struct nl80211_sta_flag_update)}, + [NL80211_STA_INFO_BEACON_SIGNAL_AVG] = {.type = NLA_U8}, + }; + static const struct nla_policy rate_policy[] = { + [NL80211_RATE_INFO_BITRATE] = {.type = NLA_U16}, + [NL80211_RATE_INFO_MCS] = {.type = NLA_U8}, + [NL80211_RATE_INFO_40_MHZ_WIDTH] = {.type = NLA_FLAG}, + [NL80211_RATE_INFO_SHORT_GI] = {.type = NLA_FLAG}, + }; + struct nlattr * rinfo[G_N_ELEMENTS(rate_policy)]; + struct nlattr * sinfo[G_N_ELEMENTS(stats_policy)]; + struct nl80211_station_info *info = arg; + struct nlattr * tb[NL80211_ATTR_MAX + 1]; + struct genlmsghdr * gnlh = nlmsg_data(nlmsg_hdr(msg)); + + if (nla_parse_arr(tb, genlmsg_attrdata(gnlh, 0), genlmsg_attrlen(gnlh, 0), NULL) < 0) + return NL_SKIP; + + if (tb[NL80211_ATTR_MAC] == NULL) + return NL_SKIP; + + if (tb[NL80211_ATTR_STA_INFO] == NULL) + return NL_SKIP; + + if (nla_parse_nested_arr(sinfo, tb[NL80211_ATTR_STA_INFO], stats_policy)) + return NL_SKIP; + + if (sinfo[NL80211_STA_INFO_STA_FLAGS] != NULL) { + const struct nl80211_sta_flag_update *flags = nla_data(sinfo[NL80211_STA_INFO_STA_FLAGS]); + + if (flags->mask & ~flags->set & (1 << NL80211_STA_FLAG_ASSOCIATED)) + return NL_SKIP; + } + + memcpy(info->bssid, nla_data(tb[NL80211_ATTR_MAC]), ETH_ALEN); + info->valid = TRUE; + + if (sinfo[NL80211_STA_INFO_TX_BITRATE] != NULL + && !nla_parse_nested_arr(rinfo, sinfo[NL80211_STA_INFO_TX_BITRATE], rate_policy) + && rinfo[NL80211_RATE_INFO_BITRATE] != NULL) { + /* convert from nl80211's units of 100kbps to NM's kbps */ + info->txrate = nla_get_u16(rinfo[NL80211_RATE_INFO_BITRATE]) * 100; + info->txrate_valid = TRUE; + } + + if (sinfo[NL80211_STA_INFO_SIGNAL] != NULL) { + info->signal = + nl80211_xbm_to_percent((gint8) nla_get_u8(sinfo[NL80211_STA_INFO_SIGNAL]), 1); + info->signal_valid = TRUE; + } else if (sinfo[NL80211_STA_INFO_BEACON_SIGNAL_AVG] != NULL) { + /* Fall back to beacon signal strength */ + info->signal = + nl80211_xbm_to_percent((gint8) nla_get_u8(sinfo[NL80211_STA_INFO_BEACON_SIGNAL_AVG]), + 1); + info->signal_valid = TRUE; + } + + return NL_SKIP; +} + +static gboolean +wifi_nl80211_get_station(NMWifiUtils *data, + NMEtherAddr *out_bssid, + int * out_quality, + guint32 * out_rate) +{ + NMWifiUtilsNl80211 * self = (NMWifiUtilsNl80211 *) data; + nm_auto_nlmsg struct nl_msg *msg = NULL; + struct nl80211_station_info sta_info = {}; + + msg = nl80211_alloc_msg(self, NL80211_CMD_GET_STATION, NLM_F_DUMP); + + nl80211_send_and_recv(self, msg, nl80211_station_dump_handler, &sta_info); + + if (!sta_info.valid || (out_quality && !sta_info.signal_valid) + || (out_rate && !sta_info.txrate_valid)) + return FALSE; + + if (out_bssid) + memcpy(out_bssid, sta_info.bssid, ETH_ALEN); + + if (out_quality) + *out_quality = sta_info.signal; + + if (out_rate) + *out_rate = sta_info.txrate; + + return TRUE; +} + +static gboolean +wifi_nl80211_indicate_addressing_running(NMWifiUtils *data, gboolean running) +{ + NMWifiUtilsNl80211 * self = (NMWifiUtilsNl80211 *) data; + nm_auto_nlmsg struct nl_msg *msg = NULL; + int err; + + msg = nl80211_alloc_msg(self, + running ? 98 /* NL80211_CMD_CRIT_PROTOCOL_START */ + : 99 /* NL80211_CMD_CRIT_PROTOCOL_STOP */, + 0); + /* Despite the DHCP name, we're using this for any type of IP addressing, + * DHCPv4, DHCPv6, and IPv6 SLAAC. + */ + NLA_PUT_U16(msg, 179 /* NL80211_ATTR_CRIT_PROT_ID */, 1 /* NL80211_CRIT_PROTO_DHCP */); + if (running) { + /* Give DHCP 5 seconds to complete */ + NLA_PUT_U16(msg, 180 /* NL80211_ATTR_MAX_CRIT_PROT_DURATION */, 5000); + } + + err = nl80211_send_and_recv(self, msg, NULL, NULL); + return err >= 0; + +nla_put_failure: + g_return_val_if_reached(FALSE); +} + +struct nl80211_device_info { + NMWifiUtilsNl80211 *self; + int phy; + guint32 * freqs; + int num_freqs; + guint32 freq; + guint32 caps; + gboolean can_scan; + gboolean can_scan_ssid; + gboolean supported; + gboolean success; + gboolean can_wowlan; +}; + +#define WLAN_CIPHER_SUITE_USE_GROUP 0x000FAC00 +#define WLAN_CIPHER_SUITE_WEP40 0x000FAC01 +#define WLAN_CIPHER_SUITE_TKIP 0x000FAC02 +#define WLAN_CIPHER_SUITE_CCMP 0x000FAC04 +#define WLAN_CIPHER_SUITE_WEP104 0x000FAC05 +#define WLAN_CIPHER_SUITE_AES_CMAC 0x000FAC06 +#define WLAN_CIPHER_SUITE_GCMP 0x000FAC08 +#define WLAN_CIPHER_SUITE_SMS4 0x00147201 + +static int +nl80211_wiphy_info_handler(struct nl_msg *msg, void *arg) +{ + static const struct nla_policy freq_policy[] = { + [NL80211_FREQUENCY_ATTR_FREQ] = {.type = NLA_U32}, + [NL80211_FREQUENCY_ATTR_DISABLED] = {.type = NLA_FLAG}, +#ifdef NL80211_FREQUENCY_ATTR_NO_IR + [NL80211_FREQUENCY_ATTR_NO_IR] = {.type = NLA_FLAG}, +#else + [NL80211_FREQUENCY_ATTR_PASSIVE_SCAN] = {.type = NLA_FLAG}, + [NL80211_FREQUENCY_ATTR_NO_IBSS] = {.type = NLA_FLAG}, +#endif + [NL80211_FREQUENCY_ATTR_RADAR] = {.type = NLA_FLAG}, + [NL80211_FREQUENCY_ATTR_MAX_TX_POWER] = {.type = NLA_U32}, + }; + struct nlattr * tb[NL80211_ATTR_MAX + 1]; + struct genlmsghdr * gnlh = nlmsg_data(nlmsg_hdr(msg)); + struct nl80211_device_info *info = arg; + NMWifiUtilsNl80211 * self = info->self; + struct nlattr * tb_band[NL80211_BAND_ATTR_MAX + 1]; + struct nlattr * tb_freq[G_N_ELEMENTS(freq_policy)]; + struct nlattr * nl_band; + struct nlattr * nl_freq; + int rem_freq; + int rem_band; + int freq_idx; + +#ifdef NL80211_FREQUENCY_ATTR_NO_IR + G_STATIC_ASSERT_EXPR(NL80211_FREQUENCY_ATTR_PASSIVE_SCAN == NL80211_FREQUENCY_ATTR_NO_IR + && NL80211_FREQUENCY_ATTR_NO_IBSS == NL80211_FREQUENCY_ATTR_NO_IR); +#else + G_STATIC_ASSERT_EXPR(NL80211_FREQUENCY_ATTR_PASSIVE_SCAN != NL80211_FREQUENCY_ATTR_NO_IBSS); +#endif + + if (nla_parse_arr(tb, genlmsg_attrdata(gnlh, 0), genlmsg_attrlen(gnlh, 0), NULL) < 0) + return NL_SKIP; + + if (tb[NL80211_ATTR_WIPHY] == NULL || tb[NL80211_ATTR_WIPHY_BANDS] == NULL) + return NL_SKIP; + + info->phy = nla_get_u32(tb[NL80211_ATTR_WIPHY]); + + if (tb[NL80211_ATTR_WIPHY_FREQ]) + info->freq = nla_get_u32(tb[NL80211_ATTR_WIPHY_FREQ]); + else + info->freq = 0; + + if (tb[NL80211_ATTR_MAX_NUM_SCAN_SSIDS]) { + info->can_scan_ssid = nla_get_u8(tb[NL80211_ATTR_MAX_NUM_SCAN_SSIDS]) > 0; + } else { + /* old kernel that only had mac80211, so assume it can */ + info->can_scan_ssid = TRUE; + } + + if (tb[NL80211_ATTR_SUPPORTED_COMMANDS]) { + struct nlattr *nl_cmd; + int i; + + nla_for_each_nested (nl_cmd, tb[NL80211_ATTR_SUPPORTED_COMMANDS], i) { + switch (nla_get_u32(nl_cmd)) { + case NL80211_CMD_TRIGGER_SCAN: + info->can_scan = TRUE; + break; + case NL80211_CMD_CONNECT: + case NL80211_CMD_AUTHENTICATE: + /* Only devices that support CONNECT or AUTH actually support + * 802.11, unlike say ipw2x00 (up to at least kernel 3.4) which + * has minimal info support, but no actual command support. + * This check mirrors what wpa_supplicant does to determine + * whether or not to use the nl80211 driver. + */ + info->supported = TRUE; + break; + default: + break; + } + } + } + + /* Find number of supported frequencies */ + info->num_freqs = 0; + + nla_for_each_nested (nl_band, tb[NL80211_ATTR_WIPHY_BANDS], rem_band) { + if (nla_parse_nested_arr(tb_band, nl_band, NULL) < 0) + return NL_SKIP; + + nla_for_each_nested (nl_freq, tb_band[NL80211_BAND_ATTR_FREQS], rem_freq) { + if (nla_parse_nested_arr(tb_freq, nl_freq, freq_policy) < 0) + continue; + + if (!tb_freq[NL80211_FREQUENCY_ATTR_FREQ]) + continue; + + info->num_freqs++; + } + } + + /* Read supported frequencies */ + info->freqs = g_malloc0(sizeof(guint32) * info->num_freqs); + + freq_idx = 0; + nla_for_each_nested (nl_band, tb[NL80211_ATTR_WIPHY_BANDS], rem_band) { + if (nla_parse_nested_arr(tb_band, nl_band, NULL) < 0) + return NL_SKIP; + + nla_for_each_nested (nl_freq, tb_band[NL80211_BAND_ATTR_FREQS], rem_freq) { + if (nla_parse_nested_arr(tb_freq, nl_freq, freq_policy) < 0) + continue; + + if (!tb_freq[NL80211_FREQUENCY_ATTR_FREQ]) + continue; + + info->freqs[freq_idx] = nla_get_u32(tb_freq[NL80211_FREQUENCY_ATTR_FREQ]); + + info->caps |= NM_WIFI_DEVICE_CAP_FREQ_VALID; + + if (info->freqs[freq_idx] > 2400 && info->freqs[freq_idx] < 2500) + info->caps |= NM_WIFI_DEVICE_CAP_FREQ_2GHZ; + if (info->freqs[freq_idx] > 4900 && info->freqs[freq_idx] < 6000) + info->caps |= NM_WIFI_DEVICE_CAP_FREQ_5GHZ; + + freq_idx++; + } + } + + /* Read security/encryption support */ + if (tb[NL80211_ATTR_CIPHER_SUITES]) { + guint32 *ciphers = nla_data(tb[NL80211_ATTR_CIPHER_SUITES]); + guint i, num; + + num = nla_len(tb[NL80211_ATTR_CIPHER_SUITES]) / sizeof(guint32); + for (i = 0; i < num; i++) { + switch (ciphers[i]) { + case WLAN_CIPHER_SUITE_WEP40: + info->caps |= NM_WIFI_DEVICE_CAP_CIPHER_WEP40; + break; + case WLAN_CIPHER_SUITE_WEP104: + info->caps |= NM_WIFI_DEVICE_CAP_CIPHER_WEP104; + break; + case WLAN_CIPHER_SUITE_TKIP: + info->caps |= (NM_WIFI_DEVICE_CAP_CIPHER_TKIP | NM_WIFI_DEVICE_CAP_WPA); + break; + case WLAN_CIPHER_SUITE_CCMP: + info->caps |= (NM_WIFI_DEVICE_CAP_CIPHER_CCMP | NM_WIFI_DEVICE_CAP_RSN); + break; + case WLAN_CIPHER_SUITE_AES_CMAC: + case WLAN_CIPHER_SUITE_GCMP: + case WLAN_CIPHER_SUITE_SMS4: + break; + default: + _LOGD("don't know the meaning of NL80211_ATTR_CIPHER_SUITE %#8.8x.", ciphers[i]); + break; + } + } + } + + if (tb[NL80211_ATTR_SUPPORTED_IFTYPES]) { + struct nlattr *nl_mode; + int i; + + nla_for_each_nested (nl_mode, tb[NL80211_ATTR_SUPPORTED_IFTYPES], i) { + switch (nla_type(nl_mode)) { + case NL80211_IFTYPE_AP: + info->caps |= NM_WIFI_DEVICE_CAP_AP; + break; + case NL80211_IFTYPE_ADHOC: + info->caps |= NM_WIFI_DEVICE_CAP_ADHOC; + break; + case NL80211_IFTYPE_MESH_POINT: + info->caps |= NM_WIFI_DEVICE_CAP_MESH; + break; + } + } + } + + if (tb[NL80211_ATTR_WOWLAN_TRIGGERS_SUPPORTED]) + info->can_wowlan = TRUE; + + if (tb[NL80211_ATTR_SUPPORT_IBSS_RSN]) + info->caps |= NM_WIFI_DEVICE_CAP_IBSS_RSN; + + info->success = TRUE; + + return NL_SKIP; +} + +static guint32 +wifi_nl80211_get_mesh_channel(NMWifiUtils *data) +{ + NMWifiUtilsNl80211 * self = (NMWifiUtilsNl80211 *) data; + nm_auto_nlmsg struct nl_msg *msg = NULL; + struct nl80211_device_info device_info = {.self = self}; + int i; + + msg = nl80211_alloc_msg(self, NL80211_CMD_GET_WIPHY, 0); + + if (nl80211_send_and_recv(self, msg, nl80211_wiphy_info_handler, &device_info) < 0) { + _LOGW("NL80211_CMD_GET_WIPHY request failed"); + return 0; + } + + for (i = 0; i < self->num_freqs; i++) { + if (device_info.freq == self->freqs[i]) + return i + 1; + } + return 0; +} + +static gboolean +wifi_nl80211_set_mesh_channel(NMWifiUtils *data, guint32 channel) +{ + NMWifiUtilsNl80211 * self = (NMWifiUtilsNl80211 *) data; + nm_auto_nlmsg struct nl_msg *msg = NULL; + int err; + + if (channel > self->num_freqs) + return FALSE; + + msg = nl80211_alloc_msg(self, NL80211_CMD_SET_WIPHY, 0); + NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, self->freqs[channel - 1]); + err = nl80211_send_and_recv(self, msg, NULL, NULL); + return err >= 0; + +nla_put_failure: + g_return_val_if_reached(FALSE); +} + +static gboolean +wifi_nl80211_set_mesh_ssid(NMWifiUtils *data, const guint8 *ssid, gsize len) +{ + NMWifiUtilsNl80211 * self = (NMWifiUtilsNl80211 *) data; + nm_auto_nlmsg struct nl_msg *msg = NULL; + int err; + + msg = nl80211_alloc_msg(self, NL80211_CMD_SET_INTERFACE, 0); + NLA_PUT(msg, NL80211_ATTR_MESH_ID, len, ssid); + err = nl80211_send_and_recv(self, msg, NULL, NULL); + return err >= 0; + +nla_put_failure: + g_return_val_if_reached(FALSE); +} + +static void +nm_wifi_utils_nl80211_init(NMWifiUtilsNl80211 *self) +{} + +static void +nm_wifi_utils_nl80211_class_init(NMWifiUtilsNl80211Class *klass) +{ + GObjectClass * object_class = G_OBJECT_CLASS(klass); + NMWifiUtilsClass *wifi_utils_class = NM_WIFI_UTILS_CLASS(klass); + + object_class->dispose = dispose; + + wifi_utils_class->get_mode = wifi_nl80211_get_mode; + wifi_utils_class->set_mode = wifi_nl80211_set_mode; + wifi_utils_class->set_powersave = wifi_nl80211_set_powersave; + wifi_utils_class->get_wake_on_wlan = wifi_nl80211_get_wake_on_wlan, + wifi_utils_class->set_wake_on_wlan = wifi_nl80211_set_wake_on_wlan, + wifi_utils_class->get_freq = wifi_nl80211_get_freq; + wifi_utils_class->find_freq = wifi_nl80211_find_freq; + wifi_utils_class->get_station = wifi_nl80211_get_station; + wifi_utils_class->indicate_addressing_running = wifi_nl80211_indicate_addressing_running; + wifi_utils_class->get_mesh_channel = wifi_nl80211_get_mesh_channel; + wifi_utils_class->set_mesh_channel = wifi_nl80211_set_mesh_channel; + wifi_utils_class->set_mesh_ssid = wifi_nl80211_set_mesh_ssid; +} + +NMWifiUtils * +nm_wifi_utils_nl80211_new(int ifindex, struct nl_sock *genl) +{ + gs_unref_object NMWifiUtilsNl80211 *self = NULL; + nm_auto_nlmsg struct nl_msg * msg = NULL; + struct nl80211_device_info device_info = {}; + + if (!genl) + return NULL; + + self = g_object_new(NM_TYPE_WIFI_UTILS_NL80211, NULL); + + self->parent.ifindex = ifindex; + self->nl_sock = genl; + + self->id = genl_ctrl_resolve(self->nl_sock, "nl80211"); + if (self->id < 0) { + _LOGD("genl_ctrl_resolve: failed to resolve \"nl80211\""); + return NULL; + } + + self->phy = -1; + + msg = nl80211_alloc_msg(self, NL80211_CMD_GET_WIPHY, 0); + + device_info.self = self; + if (nl80211_send_and_recv(self, msg, nl80211_wiphy_info_handler, &device_info) < 0) { + _LOGD("NL80211_CMD_GET_WIPHY request failed"); + return NULL; + } + + if (!device_info.success) { + _LOGD("NL80211_CMD_GET_WIPHY request indicated failure"); + return NULL; + } + + if (!device_info.supported) { + _LOGD("driver does not fully support nl80211, falling back to WEXT"); + return NULL; + } + + if (!device_info.can_scan_ssid) { + _LOGE("driver does not support SSID scans"); + return NULL; + } + + if (device_info.num_freqs == 0 || device_info.freqs == NULL) { + _LOGE("driver reports no supported frequencies"); + return NULL; + } + + if (device_info.caps == 0) { + _LOGE("driver doesn't report support of any encryption"); + return NULL; + } + + self->phy = device_info.phy; + self->freqs = device_info.freqs; + self->num_freqs = device_info.num_freqs; + self->parent.caps = device_info.caps; + self->can_wowlan = device_info.can_wowlan; + + _LOGD("using nl80211 for Wi-Fi device control"); + return (NMWifiUtils *) g_steal_pointer(&self); +} diff --git a/src/core/platform/wifi/nm-wifi-utils-nl80211.h b/src/core/platform/wifi/nm-wifi-utils-nl80211.h new file mode 100644 index 00000000..37c32ed7 --- /dev/null +++ b/src/core/platform/wifi/nm-wifi-utils-nl80211.h @@ -0,0 +1,29 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ +/* + * Copyright (C) 2011 Intel Corporation. All rights reserved. + * Copyright (C) 2018 Red Hat, Inc. + */ + +#ifndef __WIFI_UTILS_NL80211_H__ +#define __WIFI_UTILS_NL80211_H__ + +#include "nm-wifi-utils.h" +#include "nm-platform/nm-netlink.h" + +#define NM_TYPE_WIFI_UTILS_NL80211 (nm_wifi_utils_nl80211_get_type()) +#define NM_WIFI_UTILS_NL80211(obj) \ + (G_TYPE_CHECK_INSTANCE_CAST((obj), NM_TYPE_WIFI_UTILS_NL80211, NMWifiUtilsNl80211)) +#define NM_WIFI_UTILS_NL80211_CLASS(klass) \ + (G_TYPE_CHECK_CLASS_CAST((klass), NM_TYPE_WIFI_UTILS_NL80211, NMWifiUtilsNl80211Class)) +#define NM_IS_WIFI_UTILS_NL80211(obj) \ + (G_TYPE_CHECK_INSTANCE_TYPE((obj), NM_TYPE_WIFI_UTILS_NL80211)) +#define NM_IS_WIFI_UTILS_NL80211_CLASS(klass) \ + (G_TYPE_CHECK_CLASS_TYPE((klass), NM_TYPE_WIFI_UTILS_NL80211)) +#define NM_WIFI_UTILS_NL80211_GET_CLASS(obj) \ + (G_TYPE_INSTANCE_GET_CLASS((obj), NM_TYPE_WIFI_UTILS_NL80211, NMWifiUtilsNl80211Class)) + +GType nm_wifi_utils_nl80211_get_type(void); + +NMWifiUtils *nm_wifi_utils_nl80211_new(int ifindex, struct nl_sock *genl); + +#endif /* __WIFI_UTILS_NL80211_H__ */ diff --git a/src/core/platform/wifi/nm-wifi-utils-private.h b/src/core/platform/wifi/nm-wifi-utils-private.h new file mode 100644 index 00000000..9ed57453 --- /dev/null +++ b/src/core/platform/wifi/nm-wifi-utils-private.h @@ -0,0 +1,66 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ +/* + * Copyright (C) 2011 - 2018 Red Hat, Inc. + */ + +#ifndef __WIFI_UTILS_PRIVATE_H__ +#define __WIFI_UTILS_PRIVATE_H__ + +#include "nm-dbus-interface.h" +#include "nm-wifi-utils.h" + +typedef struct { + GObjectClass parent; + + NM80211Mode (*get_mode)(NMWifiUtils *data); + + gboolean (*set_mode)(NMWifiUtils *data, const NM80211Mode mode); + + /* Set power saving mode on an interface */ + gboolean (*set_powersave)(NMWifiUtils *data, guint32 powersave); + + /* Get WakeOnWLAN configuration on an interface */ + NMSettingWirelessWakeOnWLan (*get_wake_on_wlan)(NMWifiUtils *data); + + /* Set WakeOnWLAN mode on an interface */ + gboolean (*set_wake_on_wlan)(NMWifiUtils *data, NMSettingWirelessWakeOnWLan wowl); + + /* Return current frequency in MHz (really associated BSS frequency) */ + guint32 (*get_freq)(NMWifiUtils *data); + + /* Return first supported frequency in the zero-terminated list */ + guint32 (*find_freq)(NMWifiUtils *data, const guint32 *freqs); + + /* + * @out_bssid: must be NULL or an ETH_ALEN-byte buffer + * @out_quality: receives signal strength percentage 0 - 100% for the current BSSID, if not NULL + * @out_rate: receives current bitrate in Kbps if not NULL + * + * Returns %TRUE on succcess, %FALSE on errors or if not associated. + */ + gboolean (*get_station)(NMWifiUtils *data, + NMEtherAddr *out_bssid, + int * out_quality, + guint32 * out_rate); + + /* OLPC Mesh-only functions */ + + guint32 (*get_mesh_channel)(NMWifiUtils *data); + + /* channel == 0 means "auto channel" */ + gboolean (*set_mesh_channel)(NMWifiUtils *data, guint32 channel); + + /* ssid == NULL means "auto SSID" */ + gboolean (*set_mesh_ssid)(NMWifiUtils *data, const guint8 *ssid, gsize len); + + gboolean (*indicate_addressing_running)(NMWifiUtils *data, gboolean running); +} NMWifiUtilsClass; + +struct NMWifiUtils { + GObject parent; + + int ifindex; + NMDeviceWifiCapabilities caps; +}; + +#endif /* __WIFI_UTILS_PRIVATE_H__ */ diff --git a/src/core/platform/wifi/nm-wifi-utils-wext.c b/src/core/platform/wifi/nm-wifi-utils-wext.c new file mode 100644 index 00000000..a44fcf62 --- /dev/null +++ b/src/core/platform/wifi/nm-wifi-utils-wext.c @@ -0,0 +1,836 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ +/* + * Copyright (C) 2005 - 2018 Red Hat, Inc. + * Copyright (C) 2006 - 2008 Novell, Inc. + */ + +#include "src/core/nm-default-daemon.h" + +#include "nm-wifi-utils-wext.h" + +#include <sys/ioctl.h> +#include <net/ethernet.h> +#include <unistd.h> + +/* Hacks necessary to #include wireless.h; yay for WEXT */ +#ifndef __user + #define __user +#endif +#include <sys/types.h> +#include <linux/types.h> +#include <sys/socket.h> +#include <linux/wireless.h> + +#include "nm-wifi-utils-private.h" +#include "nm-utils.h" +#include "nm-platform/nm-platform-utils.h" +#include "nm-core-internal.h" +#include "nm-core-utils.h" + +typedef struct { + NMWifiUtils parent; + int fd; + struct iw_quality max_qual; + gint8 num_freqs; + guint32 freqs[IW_MAX_FREQUENCIES]; +} NMWifiUtilsWext; + +typedef struct { + NMWifiUtilsClass parent; +} NMWifiUtilsWextClass; + +G_DEFINE_TYPE(NMWifiUtilsWext, nm_wifi_utils_wext, NM_TYPE_WIFI_UTILS) + +/* Until a new wireless-tools comes out that has the defs and the structure, + * need to copy them here. + */ +/* Scan capability flags - in (struct iw_range *)->scan_capa */ +#define NM_IW_SCAN_CAPA_NONE 0x00 +#define NM_IW_SCAN_CAPA_ESSID 0x01 + +struct iw_range_with_scan_capa { + guint32 throughput; + guint32 min_nwid; + guint32 max_nwid; + guint16 old_num_channels; + guint8 old_num_frequency; + + guint8 scan_capa; + /* don't need the rest... */ +}; + +#define _NMLOG_PREFIX_NAME "wifi-wext" +#define _NMLOG(level, domain, ...) \ + G_STMT_START \ + { \ + nm_log((level), \ + (domain), \ + NULL, \ + NULL, \ + "%s: " _NM_UTILS_MACRO_FIRST(__VA_ARGS__), \ + _NMLOG_PREFIX_NAME _NM_UTILS_MACRO_REST(__VA_ARGS__)); \ + } \ + G_STMT_END + +static guint32 +iw_freq_to_uint32(const struct iw_freq *freq) +{ + if (freq->e == 0) { + /* Some drivers report channel not frequency. Convert to a + * frequency; but this assumes that the device is in b/g mode. + */ + if ((freq->m >= 1) && (freq->m <= 13)) + return 2407 + (5 * freq->m); + else if (freq->m == 14) + return 2484; + } + return (guint32)((((double) freq->m) * nm_utils_exp10(freq->e)) / 1000000.0); +} + +static void +dispose(GObject *object) +{ + NMWifiUtilsWext *wext = NM_WIFI_UTILS_WEXT(object); + + wext->fd = nm_close(wext->fd); +} + +static gboolean +get_ifname(int ifindex, char *buffer, const char *op) +{ + int errsv; + + if (!nmp_utils_if_indextoname(ifindex, buffer)) { + errsv = errno; + _LOGW(LOGD_PLATFORM | LOGD_WIFI, + "error getting interface name for ifindex %d, operation '%s': %s (%d)", + ifindex, + op, + nm_strerror_native(errsv), + errsv); + return FALSE; + } + + return TRUE; +} + +static NM80211Mode +wifi_wext_get_mode_ifname(NMWifiUtils *data, const char *ifname) +{ + NMWifiUtilsWext *wext = (NMWifiUtilsWext *) data; + struct iwreq wrq; + int errsv; + + memset(&wrq, 0, sizeof(struct iwreq)); + nm_utils_ifname_cpy(wrq.ifr_name, ifname); + + if (ioctl(wext->fd, SIOCGIWMODE, &wrq) < 0) { + errsv = errno; + if (errsv != ENODEV) { + _LOGW(LOGD_PLATFORM | LOGD_WIFI, "(%s): error %d getting card mode", ifname, errsv); + } + return NM_802_11_MODE_UNKNOWN; + } + + switch (wrq.u.mode) { + case IW_MODE_ADHOC: + return NM_802_11_MODE_ADHOC; + case IW_MODE_MASTER: + return NM_802_11_MODE_AP; + case IW_MODE_INFRA: + case IW_MODE_AUTO: /* hack for WEXT devices reporting IW_MODE_AUTO */ + return NM_802_11_MODE_INFRA; + default: + break; + } + return NM_802_11_MODE_UNKNOWN; +} + +static NM80211Mode +wifi_wext_get_mode(NMWifiUtils *data) +{ + char ifname[IFNAMSIZ]; + + if (!get_ifname(data->ifindex, ifname, "get-mode")) + return FALSE; + + return wifi_wext_get_mode_ifname(data, ifname); +} + +static gboolean +wifi_wext_set_mode(NMWifiUtils *data, const NM80211Mode mode) +{ + NMWifiUtilsWext *wext = (NMWifiUtilsWext *) data; + struct iwreq wrq; + char ifname[IFNAMSIZ]; + + if (!get_ifname(data->ifindex, ifname, "set-mode")) + return FALSE; + + if (wifi_wext_get_mode_ifname(data, ifname) == mode) + return TRUE; + + memset(&wrq, 0, sizeof(struct iwreq)); + switch (mode) { + case NM_802_11_MODE_ADHOC: + wrq.u.mode = IW_MODE_ADHOC; + break; + case NM_802_11_MODE_AP: + wrq.u.mode = IW_MODE_MASTER; + break; + case NM_802_11_MODE_INFRA: + wrq.u.mode = IW_MODE_INFRA; + break; + default: + g_warn_if_reached(); + return FALSE; + } + + nm_utils_ifname_cpy(wrq.ifr_name, ifname); + if (ioctl(wext->fd, SIOCSIWMODE, &wrq) < 0) { + if (errno != ENODEV) { + _LOGE(LOGD_PLATFORM | LOGD_WIFI, "(%s): error setting mode %d", ifname, mode); + } + return FALSE; + } + + return TRUE; +} + +static gboolean +wifi_wext_set_powersave(NMWifiUtils *data, guint32 powersave) +{ + NMWifiUtilsWext *wext = (NMWifiUtilsWext *) data; + struct iwreq wrq; + char ifname[IFNAMSIZ]; + + if (!get_ifname(data->ifindex, ifname, "set-powersave")) + return FALSE; + + memset(&wrq, 0, sizeof(struct iwreq)); + if (powersave == 1) { + wrq.u.power.flags = IW_POWER_ALL_R; + } else + wrq.u.power.disabled = 1; + + nm_utils_ifname_cpy(wrq.ifr_name, ifname); + if (ioctl(wext->fd, SIOCSIWPOWER, &wrq) < 0) { + if (errno != ENODEV) { + _LOGE(LOGD_PLATFORM | LOGD_WIFI, + "(%s): error setting powersave %" G_GUINT32_FORMAT, + ifname, + powersave); + } + return FALSE; + } + + return TRUE; +} + +static guint32 +wifi_wext_get_freq(NMWifiUtils *data) +{ + NMWifiUtilsWext *wext = (NMWifiUtilsWext *) data; + struct iwreq wrq; + char ifname[IFNAMSIZ]; + + if (!get_ifname(data->ifindex, ifname, "get-freq")) + return FALSE; + + memset(&wrq, 0, sizeof(struct iwreq)); + nm_utils_ifname_cpy(wrq.ifr_name, ifname); + if (ioctl(wext->fd, SIOCGIWFREQ, &wrq) < 0) { + _LOGW(LOGD_PLATFORM | LOGD_WIFI, + "(%s): error getting frequency: %s", + ifname, + nm_strerror_native(errno)); + return 0; + } + + return iw_freq_to_uint32(&wrq.u.freq); +} + +static guint32 +wifi_wext_find_freq(NMWifiUtils *data, const guint32 *freqs) +{ + NMWifiUtilsWext *wext = (NMWifiUtilsWext *) data; + int i; + + for (i = 0; i < wext->num_freqs; i++) { + while (*freqs) { + if (wext->freqs[i] == *freqs) + return *freqs; + freqs++; + } + } + return 0; +} + +static gboolean +wifi_wext_get_bssid(NMWifiUtils *data, NMEtherAddr *out_bssid) +{ + NMWifiUtilsWext *wext = (NMWifiUtilsWext *) data; + struct iwreq wrq; + char ifname[IFNAMSIZ]; + + if (!get_ifname(data->ifindex, ifname, "get-bssid")) + return FALSE; + + memset(&wrq, 0, sizeof(wrq)); + nm_utils_ifname_cpy(wrq.ifr_name, ifname); + if (ioctl(wext->fd, SIOCGIWAP, &wrq) < 0) { + _LOGW(LOGD_PLATFORM | LOGD_WIFI, + "(%s): error getting associated BSSID: %s", + ifname, + nm_strerror_native(errno)); + return FALSE; + } + memcpy(out_bssid, &(wrq.u.ap_addr.sa_data), ETH_ALEN); + return TRUE; +} + +static guint32 +wifi_wext_get_rate(NMWifiUtils *data) +{ + NMWifiUtilsWext *wext = (NMWifiUtilsWext *) data; + struct iwreq wrq; + int err; + char ifname[IFNAMSIZ]; + + if (!get_ifname(data->ifindex, ifname, "get-rate")) + return FALSE; + + memset(&wrq, 0, sizeof(wrq)); + nm_utils_ifname_cpy(wrq.ifr_name, ifname); + err = ioctl(wext->fd, SIOCGIWRATE, &wrq); + return ((err == 0) ? wrq.u.bitrate.value / 1000 : 0); +} + +static int +wext_qual_to_percent(const struct iw_quality *qual, const struct iw_quality *max_qual) +{ + int percent = -1; + int level_percent = -1; + + g_return_val_if_fail(qual != NULL, -1); + g_return_val_if_fail(max_qual != NULL, -1); + + /* Magically convert the many different WEXT quality representations to a percentage */ + + _LOGD(LOGD_WIFI, + "QL: qual %d/%u/0x%X, level %d/%u/0x%X, noise %d/%u/0x%X, updated: 0x%X ** MAX: qual " + "%d/%u/0x%X, level %d/%u/0x%X, noise %d/%u/0x%X, updated: 0x%X", + (__s8) qual->qual, + qual->qual, + qual->qual, + (__s8) qual->level, + qual->level, + qual->level, + (__s8) qual->noise, + qual->noise, + qual->noise, + qual->updated, + (__s8) max_qual->qual, + max_qual->qual, + max_qual->qual, + (__s8) max_qual->level, + max_qual->level, + max_qual->level, + (__s8) max_qual->noise, + max_qual->noise, + max_qual->noise, + max_qual->updated); + + /* Try using the card's idea of the signal quality first as long as it tells us what the max quality is. + * Drivers that fill in quality values MUST treat them as percentages, ie the "Link Quality" MUST be + * bounded by 0 and max_qual->qual, and MUST change in a linear fashion. Within those bounds, drivers + * are free to use whatever they want to calculate "Link Quality". + */ + if ((max_qual->qual != 0) && !(max_qual->updated & IW_QUAL_QUAL_INVALID) + && !(qual->updated & IW_QUAL_QUAL_INVALID)) + percent = (int) (100 * ((double) qual->qual / (double) max_qual->qual)); + + /* If the driver doesn't specify a complete and valid quality, we have two options: + * + * 1) dBm: driver must specify max_qual->level = 0, and have valid values for + * qual->level and (qual->noise OR max_qual->noise) + * 2) raw RSSI: driver must specify max_qual->level > 0, and have valid values for + * qual->level and max_qual->level + * + * This is the WEXT spec. If this interpretation is wrong, I'll fix it. Otherwise, + * If drivers don't conform to it, they are wrong and need to be fixed. + */ + + if ((max_qual->level == 0) + && !(max_qual->updated & IW_QUAL_LEVEL_INVALID) /* Valid max_qual->level == 0 */ + && !(qual->updated & IW_QUAL_LEVEL_INVALID) /* Must have valid qual->level */ + && (((max_qual->noise > 0) + && !(max_qual->updated & IW_QUAL_NOISE_INVALID)) /* Must have valid max_qual->noise */ + || ((qual->noise > 0) + && !(qual->updated & IW_QUAL_NOISE_INVALID))) /* OR valid qual->noise */ + ) { +/* Absolute power values (dBm) */ + +/* Reasonable fallbacks for dumb drivers that don't specify either level. */ +#define FALLBACK_NOISE_FLOOR_DBM -90 +#define FALLBACK_SIGNAL_MAX_DBM -20 + int max_level = FALLBACK_SIGNAL_MAX_DBM; + int noise = FALLBACK_NOISE_FLOOR_DBM; + int level = qual->level - 0x100; + + level = CLAMP(level, FALLBACK_NOISE_FLOOR_DBM, FALLBACK_SIGNAL_MAX_DBM); + + if ((qual->noise > 0) && !(qual->updated & IW_QUAL_NOISE_INVALID)) + noise = qual->noise - 0x100; + else if ((max_qual->noise > 0) && !(max_qual->updated & IW_QUAL_NOISE_INVALID)) + noise = max_qual->noise - 0x100; + noise = CLAMP(noise, FALLBACK_NOISE_FLOOR_DBM, FALLBACK_SIGNAL_MAX_DBM - 1); + + /* A sort of signal-to-noise ratio calculation */ + level_percent = (int) (100 + - 70 + * (((double) max_level - (double) level) + / ((double) max_level - (double) noise))); + _LOGD(LOGD_WIFI, + "QL1: level_percent is %d. max_level %d, level %d, noise_floor %d.", + level_percent, + max_level, + level, + noise); + } else if ((max_qual->level != 0) + && !(max_qual->updated + & IW_QUAL_LEVEL_INVALID) /* Valid max_qual->level as upper bound */ + && !(qual->updated & IW_QUAL_LEVEL_INVALID)) { + /* Relative power values (RSSI) */ + + int level = qual->level; + + /* Signal level is relavtive (0 -> max_qual->level) */ + level = CLAMP(level, 0, max_qual->level); + level_percent = (int) (100 * ((double) level / (double) max_qual->level)); + _LOGD(LOGD_WIFI, + "QL2: level_percent is %d. max_level %d, level %d.", + level_percent, + max_qual->level, + level); + } else if (percent == -1) { + _LOGD(LOGD_WIFI, + "QL: Could not get quality %% value from driver. Driver is probably buggy."); + } + + /* If the quality percent was 0 or doesn't exist, then try to use signal levels instead */ + if ((percent < 1) && (level_percent >= 0)) + percent = level_percent; + + _LOGD(LOGD_WIFI, "QL: Final quality percent is %d (%d).", percent, CLAMP(percent, 0, 100)); + return (CLAMP(percent, 0, 100)); +} + +static int +wifi_wext_get_qual(NMWifiUtils *data) +{ + NMWifiUtilsWext * wext = (NMWifiUtilsWext *) data; + struct iwreq wrq; + struct iw_statistics stats; + char ifname[IFNAMSIZ]; + + if (!get_ifname(data->ifindex, ifname, "get-qual")) + return FALSE; + + memset(&stats, 0, sizeof(stats)); + wrq.u.data.pointer = &stats; + wrq.u.data.length = sizeof(stats); + wrq.u.data.flags = 1; /* Clear updated flag */ + nm_utils_ifname_cpy(wrq.ifr_name, ifname); + + if (ioctl(wext->fd, SIOCGIWSTATS, &wrq) < 0) { + _LOGW(LOGD_PLATFORM | LOGD_WIFI, + "(%s): error getting signal strength: %s", + ifname, + nm_strerror_native(errno)); + return -1; + } + + return wext_qual_to_percent(&stats.qual, &wext->max_qual); +} + +static gboolean +wifi_wext_get_station(NMWifiUtils *data, + NMEtherAddr *out_bssid, + int * out_quality, + guint32 * out_rate) +{ + NMEtherAddr local_addr; + + if (!out_bssid && !out_quality && !out_rate) { + /* hm, the caller requested no parameter at all? + * Don't simply return TRUE, but at least check that + * we can successfully fetch the bssid. */ + out_bssid = &local_addr; + } + + if (out_bssid) { + if (!wifi_wext_get_bssid(data, out_bssid)) + return FALSE; + } + if (out_quality) { + *out_quality = wifi_wext_get_qual(data); + if (*out_quality < 0) + return FALSE; + } + if (out_rate) { + *out_rate = wifi_wext_get_rate(data); + if (*out_rate == 0) + return FALSE; + } + return TRUE; +} + +/*****************************************************************************/ +/* OLPC Mesh-only functions */ + +static guint32 +wifi_wext_get_mesh_channel(NMWifiUtils *data) +{ + NMWifiUtilsWext *wext = (NMWifiUtilsWext *) data; + guint32 freq; + int i; + + freq = nm_wifi_utils_get_freq(data); + for (i = 0; i < wext->num_freqs; i++) { + if (freq == wext->freqs[i]) + return i + 1; + } + return 0; +} + +static gboolean +wifi_wext_set_mesh_channel(NMWifiUtils *data, guint32 channel) +{ + NMWifiUtilsWext *wext = (NMWifiUtilsWext *) data; + struct iwreq wrq; + char ifname[IFNAMSIZ]; + + if (!get_ifname(data->ifindex, ifname, "set-mesh-channel")) + return FALSE; + + memset(&wrq, 0, sizeof(struct iwreq)); + nm_utils_ifname_cpy(wrq.ifr_name, ifname); + + if (channel > 0) { + wrq.u.freq.flags = IW_FREQ_FIXED; + wrq.u.freq.e = 0; + wrq.u.freq.m = channel; + } + + if (ioctl(wext->fd, SIOCSIWFREQ, &wrq) < 0) { + _LOGE(LOGD_PLATFORM | LOGD_WIFI | LOGD_OLPC, + "(%s): error setting channel to %d: %s", + ifname, + channel, + nm_strerror_native(errno)); + return FALSE; + } + + return TRUE; +} + +static gboolean +wifi_wext_set_mesh_ssid(NMWifiUtils *data, const guint8 *ssid, gsize len) +{ + NMWifiUtilsWext *wext = (NMWifiUtilsWext *) data; + struct iwreq wrq; + char buf[IW_ESSID_MAX_SIZE + 1]; + char ifname[IFNAMSIZ]; + int errsv; + + if (!get_ifname(data->ifindex, ifname, "set-mesh-ssid")) + return FALSE; + + memset(buf, 0, sizeof(buf)); + memcpy(buf, ssid, MIN(sizeof(buf) - 1, len)); + + wrq.u.essid.pointer = (caddr_t) buf; + wrq.u.essid.length = len; + wrq.u.essid.flags = (len > 0) ? 1 : 0; /* 1=enable SSID, 0=disable/any */ + + nm_utils_ifname_cpy(wrq.ifr_name, ifname); + if (ioctl(wext->fd, SIOCSIWESSID, &wrq) == 0) + return TRUE; + + errsv = errno; + if (errsv != ENODEV) { + gs_free char *ssid_str = NULL; + + _LOGE(LOGD_PLATFORM | LOGD_WIFI | LOGD_OLPC, + "(%s): error setting SSID to %s: %s", + ifname, + (ssid_str = _nm_utils_ssid_to_string_arr(ssid, len)), + nm_strerror_native(errsv)); + } + + return FALSE; +} + +/*****************************************************************************/ + +static gboolean +wext_can_scan_ifname(NMWifiUtilsWext *wext, const char *ifname) +{ + struct iwreq wrq; + + memset(&wrq, 0, sizeof(struct iwreq)); + nm_utils_ifname_cpy(wrq.ifr_name, ifname); + if (ioctl(wext->fd, SIOCSIWSCAN, &wrq) < 0) { + if (errno == EOPNOTSUPP) + return FALSE; + } + return TRUE; +} + +static gboolean +wext_get_range_ifname(NMWifiUtilsWext *wext, + const char * ifname, + struct iw_range *range, + guint32 * response_len) +{ + int i = 26; + gboolean success = FALSE; + struct iwreq wrq; + int errsv; + + memset(&wrq, 0, sizeof(struct iwreq)); + nm_utils_ifname_cpy(wrq.ifr_name, ifname); + wrq.u.data.pointer = (caddr_t) range; + wrq.u.data.length = sizeof(struct iw_range); + + /* Need to give some drivers time to recover after suspend/resume + * (ex ipw3945 takes a few seconds to talk to its regulatory daemon; + * see rh bz#362421) + */ + while (i-- > 0) { + if (ioctl(wext->fd, SIOCGIWRANGE, &wrq) == 0) { + if (response_len) + *response_len = wrq.u.data.length; + success = TRUE; + break; + } else { + errsv = errno; + if (errsv != EAGAIN) { + _LOGE(LOGD_PLATFORM | LOGD_WIFI, + "(%s): couldn't get driver range information (%d).", + ifname, + errsv); + break; + } + } + + g_usleep(G_USEC_PER_SEC / 4); + } + + if (i <= 0) { + _LOGW(LOGD_PLATFORM | LOGD_WIFI, + "(%s): driver took too long to respond to IWRANGE query.", + ifname); + } + + return success; +} + +#define WPA_CAPS \ + (NM_WIFI_DEVICE_CAP_CIPHER_TKIP | NM_WIFI_DEVICE_CAP_CIPHER_CCMP | NM_WIFI_DEVICE_CAP_WPA \ + | NM_WIFI_DEVICE_CAP_RSN) + +static guint32 +wext_get_caps(NMWifiUtilsWext *wext, const char *ifname, struct iw_range *range) +{ + guint32 caps = NM_WIFI_DEVICE_CAP_NONE; + + g_return_val_if_fail(wext != NULL, NM_WIFI_DEVICE_CAP_NONE); + g_return_val_if_fail(range != NULL, NM_WIFI_DEVICE_CAP_NONE); + + /* All drivers should support WEP by default */ + caps |= NM_WIFI_DEVICE_CAP_CIPHER_WEP40 | NM_WIFI_DEVICE_CAP_CIPHER_WEP104; + + if (range->enc_capa & IW_ENC_CAPA_CIPHER_TKIP) + caps |= NM_WIFI_DEVICE_CAP_CIPHER_TKIP; + + if (range->enc_capa & IW_ENC_CAPA_CIPHER_CCMP) + caps |= NM_WIFI_DEVICE_CAP_CIPHER_CCMP; + + if (range->enc_capa & IW_ENC_CAPA_WPA) + caps |= NM_WIFI_DEVICE_CAP_WPA; + + if (range->enc_capa & IW_ENC_CAPA_WPA2) + caps |= NM_WIFI_DEVICE_CAP_RSN; + + /* Check for cipher support but not WPA support */ + if ((caps & (NM_WIFI_DEVICE_CAP_CIPHER_TKIP | NM_WIFI_DEVICE_CAP_CIPHER_CCMP)) + && !(caps & (NM_WIFI_DEVICE_CAP_WPA | NM_WIFI_DEVICE_CAP_RSN))) { + _LOGW(LOGD_WIFI, + "%s: device supports WPA ciphers but not WPA protocol; WPA unavailable.", + ifname); + caps &= ~WPA_CAPS; + } + + /* Check for WPA support but not cipher support */ + if ((caps & (NM_WIFI_DEVICE_CAP_WPA | NM_WIFI_DEVICE_CAP_RSN)) + && !(caps & (NM_WIFI_DEVICE_CAP_CIPHER_TKIP | NM_WIFI_DEVICE_CAP_CIPHER_CCMP))) { + _LOGW(LOGD_WIFI, + "%s: device supports WPA protocol but not WPA ciphers; WPA unavailable.", + ifname); + caps &= ~WPA_CAPS; + } + + /* There's no way to detect Ad-Hoc/AP mode support with WEXT + * (other than actually trying to do it), so just assume that + * Ad-Hoc is supported and AP isn't. + */ + caps |= NM_WIFI_DEVICE_CAP_ADHOC; + + return caps; +} + +/*****************************************************************************/ + +static void +nm_wifi_utils_wext_init(NMWifiUtilsWext *self) +{} + +static void +nm_wifi_utils_wext_class_init(NMWifiUtilsWextClass *klass) +{ + GObjectClass * object_class = G_OBJECT_CLASS(klass); + NMWifiUtilsClass *wifi_utils_class = NM_WIFI_UTILS_CLASS(klass); + + object_class->dispose = dispose; + + wifi_utils_class->get_mode = wifi_wext_get_mode; + wifi_utils_class->set_mode = wifi_wext_set_mode; + wifi_utils_class->set_powersave = wifi_wext_set_powersave; + wifi_utils_class->get_freq = wifi_wext_get_freq; + wifi_utils_class->find_freq = wifi_wext_find_freq; + wifi_utils_class->get_station = wifi_wext_get_station; + wifi_utils_class->get_mesh_channel = wifi_wext_get_mesh_channel; + wifi_utils_class->set_mesh_channel = wifi_wext_set_mesh_channel; + wifi_utils_class->set_mesh_ssid = wifi_wext_set_mesh_ssid; +} + +NMWifiUtils * +nm_wifi_utils_wext_new(int ifindex, gboolean check_scan) +{ + NMWifiUtilsWext * wext; + struct iw_range range; + guint32 response_len = 0; + struct iw_range_with_scan_capa *scan_capa_range; + int i; + gboolean freq_valid = FALSE, has_5ghz = FALSE, has_2ghz = FALSE; + char ifname[IFNAMSIZ]; + + if (!nmp_utils_if_indextoname(ifindex, ifname)) { + _LOGW(LOGD_PLATFORM | LOGD_WIFI, "can't determine interface name for ifindex %d", ifindex); + return NULL; + } + + wext = g_object_new(NM_TYPE_WIFI_UTILS_WEXT, NULL); + + wext->parent.ifindex = ifindex; + wext->fd = socket(PF_INET, SOCK_DGRAM | SOCK_CLOEXEC, 0); + if (wext->fd < 0) + goto error; + + memset(&range, 0, sizeof(struct iw_range)); + if (wext_get_range_ifname(wext, ifname, &range, &response_len) == FALSE) { + _LOGI(LOGD_PLATFORM | LOGD_WIFI, "(%s): driver WEXT range request failed", ifname); + goto error; + } + + if ((response_len < 300) || (range.we_version_compiled < 21)) { + _LOGI(LOGD_PLATFORM | LOGD_WIFI, + "(%s): driver WEXT version too old (got %d, expected >= 21)", + ifname, + range.we_version_compiled); + goto error; + } + + wext->max_qual.qual = range.max_qual.qual; + wext->max_qual.level = range.max_qual.level; + wext->max_qual.noise = range.max_qual.noise; + wext->max_qual.updated = range.max_qual.updated; + + wext->num_freqs = MIN(range.num_frequency, IW_MAX_FREQUENCIES); + for (i = 0; i < wext->num_freqs; i++) { + wext->freqs[i] = iw_freq_to_uint32(&range.freq[i]); + freq_valid = TRUE; + if (wext->freqs[i] > 2400 && wext->freqs[i] < 2500) + has_2ghz = TRUE; + else if (wext->freqs[i] > 4900 && wext->freqs[i] < 6000) + has_5ghz = TRUE; + } + + /* Check for scanning capability; cards that can't scan are not supported */ + if (check_scan && (wext_can_scan_ifname(wext, ifname) == FALSE)) { + _LOGI(LOGD_PLATFORM | LOGD_WIFI, "(%s): drivers that cannot scan are unsupported", ifname); + goto error; + } + + /* Check for the ability to scan specific SSIDs. Until the scan_capa + * field gets added to wireless-tools, need to work around that by casting + * to the custom structure. + */ + scan_capa_range = (struct iw_range_with_scan_capa *) ⦥ + if (scan_capa_range->scan_capa & NM_IW_SCAN_CAPA_ESSID) { + _LOGI(LOGD_PLATFORM | LOGD_WIFI, + "(%s): driver supports SSID scans (scan_capa 0x%02X).", + ifname, + scan_capa_range->scan_capa); + } else { + _LOGI(LOGD_PLATFORM | LOGD_WIFI, + "(%s): driver does not support SSID scans (scan_capa 0x%02X).", + ifname, + scan_capa_range->scan_capa); + } + + wext->parent.caps = wext_get_caps(wext, ifname, &range); + if (freq_valid) + wext->parent.caps |= NM_WIFI_DEVICE_CAP_FREQ_VALID; + if (has_2ghz) + wext->parent.caps |= NM_WIFI_DEVICE_CAP_FREQ_2GHZ; + if (has_5ghz) + wext->parent.caps |= NM_WIFI_DEVICE_CAP_FREQ_5GHZ; + + _LOGI(LOGD_PLATFORM | LOGD_WIFI, "(%s): using WEXT for Wi-Fi device control", ifname); + + return (NMWifiUtils *) wext; + +error: + g_object_unref(wext); + return NULL; +} + +gboolean +nm_wifi_utils_wext_is_wifi(const char *iface) +{ + int fd; + struct iwreq iwr; + gboolean is_wifi = FALSE; + + /* performing an ioctl on a non-existing name may cause the automatic + * loading of kernel modules, which should be avoided. + * + * Usually, we should thus make sure that an interface with this name + * exists. + * + * Note that wifi_wext_is_wifi() has only one caller which just verified + * that an interface with this name exists. + */ + + fd = socket(PF_INET, SOCK_DGRAM | SOCK_CLOEXEC, 0); + if (fd >= 0) { + nm_utils_ifname_cpy(iwr.ifr_ifrn.ifrn_name, iface); + if (ioctl(fd, SIOCGIWNAME, &iwr) == 0) + is_wifi = TRUE; + nm_close(fd); + } + return is_wifi; +} diff --git a/src/core/platform/wifi/nm-wifi-utils-wext.h b/src/core/platform/wifi/nm-wifi-utils-wext.h new file mode 100644 index 00000000..d6f3453c --- /dev/null +++ b/src/core/platform/wifi/nm-wifi-utils-wext.h @@ -0,0 +1,28 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ +/* + * Copyright (C) 2011 - 2018 Red Hat, Inc. + */ + +#ifndef __WIFI_UTILS_WEXT_H__ +#define __WIFI_UTILS_WEXT_H__ + +#include "nm-wifi-utils.h" + +#define NM_TYPE_WIFI_UTILS_WEXT (nm_wifi_utils_wext_get_type()) +#define NM_WIFI_UTILS_WEXT(obj) \ + (G_TYPE_CHECK_INSTANCE_CAST((obj), NM_TYPE_WIFI_UTILS_WEXT, NMWifiUtilsWext)) +#define NM_WIFI_UTILS_WEXT_CLASS(klass) \ + (G_TYPE_CHECK_CLASS_CAST((klass), NM_TYPE_WIFI_UTILS_WEXT, NMWifiUtilsWextClass)) +#define NM_IS_WIFI_UTILS_WEXT(obj) (G_TYPE_CHECK_INSTANCE_TYPE((obj), NM_TYPE_WIFI_UTILS_WEXT)) +#define NM_IS_WIFI_UTILS_WEXT_CLASS(klass) \ + (G_TYPE_CHECK_CLASS_TYPE((klass), NM_TYPE_WIFI_UTILS_WEXT)) +#define NM_WIFI_UTILS_WEXT_GET_CLASS(obj) \ + (G_TYPE_INSTANCE_GET_CLASS((obj), NM_TYPE_WIFI_UTILS_WEXT, NMWifiUtilsWextClass)) + +GType nm_wifi_utils_wext_get_type(void); + +NMWifiUtils *nm_wifi_utils_wext_new(int ifindex, gboolean check_scan); + +gboolean nm_wifi_utils_wext_is_wifi(const char *iface); + +#endif /* __WIFI_UTILS_WEXT_H__ */ diff --git a/src/core/platform/wifi/nm-wifi-utils.c b/src/core/platform/wifi/nm-wifi-utils.c new file mode 100644 index 00000000..49ae1811 --- /dev/null +++ b/src/core/platform/wifi/nm-wifi-utils.c @@ -0,0 +1,211 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ +/* + * Copyright (C) 2005 - 2018 Red Hat, Inc. + * Copyright (C) 2006 - 2008 Novell, Inc. + */ + +#include "src/core/nm-default-daemon.h" + +#include "nm-wifi-utils.h" + +#include <sys/stat.h> +#include <stdio.h> +#include <fcntl.h> + +#include "nm-wifi-utils-private.h" +#include "nm-wifi-utils-nl80211.h" +#if HAVE_WEXT + #include "nm-wifi-utils-wext.h" +#endif +#include "nm-core-utils.h" + +#include "nm-platform/nm-platform-utils.h" + +G_DEFINE_ABSTRACT_TYPE(NMWifiUtils, nm_wifi_utils, G_TYPE_OBJECT) + +/*****************************************************************************/ + +static void +nm_wifi_utils_init(NMWifiUtils *self) +{} + +static void +nm_wifi_utils_class_init(NMWifiUtilsClass *klass) +{} + +NMWifiUtils * +nm_wifi_utils_new(int ifindex, struct nl_sock *genl, gboolean check_scan) +{ + NMWifiUtils *ret; + + g_return_val_if_fail(ifindex > 0, NULL); + + ret = nm_wifi_utils_nl80211_new(ifindex, genl); + +#if HAVE_WEXT + if (ret == NULL) + ret = nm_wifi_utils_wext_new(ifindex, check_scan); +#endif + + return ret; +} + +NMDeviceWifiCapabilities +nm_wifi_utils_get_caps(NMWifiUtils *data) +{ + g_return_val_if_fail(data != NULL, NM_WIFI_DEVICE_CAP_NONE); + + return data->caps; +} + +NM80211Mode +nm_wifi_utils_get_mode(NMWifiUtils *data) +{ + g_return_val_if_fail(data != NULL, NM_802_11_MODE_UNKNOWN); + return NM_WIFI_UTILS_GET_CLASS(data)->get_mode(data); +} + +gboolean +nm_wifi_utils_set_mode(NMWifiUtils *data, const NM80211Mode mode) +{ + NMWifiUtilsClass *klass; + + g_return_val_if_fail(data != NULL, FALSE); + g_return_val_if_fail((mode == NM_802_11_MODE_INFRA) || (mode == NM_802_11_MODE_AP) + || (mode == NM_802_11_MODE_ADHOC) || (mode == NM_802_11_MODE_MESH), + FALSE); + + klass = NM_WIFI_UTILS_GET_CLASS(data); + + /* nl80211 probably doesn't need this */ + return klass->set_mode ? klass->set_mode(data, mode) : TRUE; +} + +gboolean +nm_wifi_utils_set_powersave(NMWifiUtils *data, guint32 powersave) +{ + NMWifiUtilsClass *klass; + + g_return_val_if_fail(data != NULL, FALSE); + + klass = NM_WIFI_UTILS_GET_CLASS(data); + return klass->set_powersave ? klass->set_powersave(data, powersave) : TRUE; +} + +NMSettingWirelessWakeOnWLan +nm_wifi_utils_get_wake_on_wlan(NMWifiUtils *data) +{ + NMWifiUtilsClass *klass; + + g_return_val_if_fail(data != NULL, NM_SETTING_WIRELESS_WAKE_ON_WLAN_IGNORE); + + klass = NM_WIFI_UTILS_GET_CLASS(data); + + return klass->get_wake_on_wlan ? klass->get_wake_on_wlan(data) + : NM_SETTING_WIRELESS_WAKE_ON_WLAN_IGNORE; +} + +gboolean +nm_wifi_utils_set_wake_on_wlan(NMWifiUtils *data, NMSettingWirelessWakeOnWLan wowl) +{ + NMWifiUtilsClass *klass; + + g_return_val_if_fail(data != NULL, FALSE); + + klass = NM_WIFI_UTILS_GET_CLASS(data); + return klass->set_wake_on_wlan ? klass->set_wake_on_wlan(data, wowl) : FALSE; +} + +guint32 +nm_wifi_utils_get_freq(NMWifiUtils *data) +{ + g_return_val_if_fail(data != NULL, 0); + return NM_WIFI_UTILS_GET_CLASS(data)->get_freq(data); +} + +guint32 +nm_wifi_utils_find_freq(NMWifiUtils *data, const guint32 *freqs) +{ + g_return_val_if_fail(data != NULL, 0); + g_return_val_if_fail(freqs != NULL, 0); + return NM_WIFI_UTILS_GET_CLASS(data)->find_freq(data, freqs); +} + +gboolean +nm_wifi_utils_get_station(NMWifiUtils *data, + NMEtherAddr *out_bssid, + int * out_quality, + guint32 * out_rate) +{ + g_return_val_if_fail(data != NULL, FALSE); + + return NM_WIFI_UTILS_GET_CLASS(data)->get_station(data, out_bssid, out_quality, out_rate); +} + +gboolean +nm_wifi_utils_is_wifi(int dirfd, const char *ifname) +{ + g_return_val_if_fail(dirfd >= 0, FALSE); + + if (faccessat(dirfd, "phy80211", F_OK, 0) == 0) + return TRUE; +#if HAVE_WEXT + if (nm_wifi_utils_wext_is_wifi(ifname)) + return TRUE; +#endif + return FALSE; +} + +/* OLPC Mesh-only functions */ + +guint32 +nm_wifi_utils_get_mesh_channel(NMWifiUtils *data) +{ + NMWifiUtilsClass *klass; + + g_return_val_if_fail(data != NULL, FALSE); + + klass = NM_WIFI_UTILS_GET_CLASS(data); + g_return_val_if_fail(klass->get_mesh_channel != NULL, FALSE); + + return klass->get_mesh_channel(data); +} + +gboolean +nm_wifi_utils_set_mesh_channel(NMWifiUtils *data, guint32 channel) +{ + NMWifiUtilsClass *klass; + + g_return_val_if_fail(data != NULL, FALSE); + g_return_val_if_fail(channel <= 13, FALSE); + + klass = NM_WIFI_UTILS_GET_CLASS(data); + g_return_val_if_fail(klass->set_mesh_channel != NULL, FALSE); + + return klass->set_mesh_channel(data, channel); +} + +gboolean +nm_wifi_utils_set_mesh_ssid(NMWifiUtils *data, const guint8 *ssid, gsize len) +{ + NMWifiUtilsClass *klass; + + g_return_val_if_fail(data != NULL, FALSE); + + klass = NM_WIFI_UTILS_GET_CLASS(data); + g_return_val_if_fail(klass->set_mesh_ssid != NULL, FALSE); + + return klass->set_mesh_ssid(data, ssid, len); +} + +gboolean +nm_wifi_utils_indicate_addressing_running(NMWifiUtils *data, gboolean running) +{ + NMWifiUtilsClass *klass; + + g_return_val_if_fail(data != NULL, FALSE); + + klass = NM_WIFI_UTILS_GET_CLASS(data); + return klass->indicate_addressing_running ? klass->indicate_addressing_running(data, running) + : FALSE; +} diff --git a/src/core/platform/wifi/nm-wifi-utils.h b/src/core/platform/wifi/nm-wifi-utils.h new file mode 100644 index 00000000..a252e43e --- /dev/null +++ b/src/core/platform/wifi/nm-wifi-utils.h @@ -0,0 +1,74 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ +/* + * Copyright (C) 2005 - 2018 Red Hat, Inc. + * Copyright (C) 2006 - 2008 Novell, Inc. + */ + +#ifndef __WIFI_UTILS_H__ +#define __WIFI_UTILS_H__ + +#include <net/ethernet.h> + +#include "nm-dbus-interface.h" +#include "nm-setting-wireless.h" +#include "nm-platform/nm-netlink.h" + +typedef struct NMWifiUtils NMWifiUtils; + +#define NM_TYPE_WIFI_UTILS (nm_wifi_utils_get_type()) +#define NM_WIFI_UTILS(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj), NM_TYPE_WIFI_UTILS, NMWifiUtils)) +#define NM_WIFI_UTILS_CLASS(klass) \ + (G_TYPE_CHECK_CLASS_CAST((klass), NM_TYPE_WIFI_UTILS, NMWifiUtilsClass)) +#define NM_IS_WIFI_UTILS(obj) (G_TYPE_CHECK_INSTANCE_TYPE((obj), NM_TYPE_WIFI_UTILS)) +#define NM_IS_WIFI_UTILS_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE((klass), NM_TYPE_WIFI_UTILS)) +#define NM_WIFI_UTILS_GET_CLASS(obj) \ + (G_TYPE_INSTANCE_GET_CLASS((obj), NM_TYPE_WIFI_UTILS, NMWifiUtilsClass)) + +GType nm_wifi_utils_get_type(void); + +gboolean nm_wifi_utils_is_wifi(int dirfd, const char *ifname); + +NMWifiUtils *nm_wifi_utils_new(int ifindex, struct nl_sock *genl, gboolean check_scan); + +NMDeviceWifiCapabilities nm_wifi_utils_get_caps(NMWifiUtils *data); + +NM80211Mode nm_wifi_utils_get_mode(NMWifiUtils *data); + +gboolean nm_wifi_utils_set_mode(NMWifiUtils *data, const NM80211Mode mode); + +/* Returns frequency in MHz */ +guint32 nm_wifi_utils_get_freq(NMWifiUtils *data); + +/* Return the first supported frequency in the zero-terminated list. + * Frequencies are specified in MHz. */ +guint32 nm_wifi_utils_find_freq(NMWifiUtils *data, const guint32 *freqs); + +/* + * @out_bssid: must be NULL or an ETH_ALEN-byte buffer + * @out_quality: receives signal quality in 0 - 100% range if not NULL + * @out_rate: receives current bitrate in Kbps if not NULL + * + * Returns %TRUE on succcess. + */ +gboolean nm_wifi_utils_get_station(NMWifiUtils *data, + NMEtherAddr *out_bssid, + int * out_quality, + guint32 * out_rate); + +/* Tells the driver DHCP or SLAAC is running */ +gboolean nm_wifi_utils_indicate_addressing_running(NMWifiUtils *data, gboolean running); + +gboolean nm_wifi_utils_set_powersave(NMWifiUtils *data, guint32 powersave); + +NMSettingWirelessWakeOnWLan nm_wifi_utils_get_wake_on_wlan(NMWifiUtils *data); + +gboolean nm_wifi_utils_set_wake_on_wlan(NMWifiUtils *data, NMSettingWirelessWakeOnWLan wowl); + +/* OLPC Mesh-only functions */ +guint32 nm_wifi_utils_get_mesh_channel(NMWifiUtils *data); + +gboolean nm_wifi_utils_set_mesh_channel(NMWifiUtils *data, guint32 channel); + +gboolean nm_wifi_utils_set_mesh_ssid(NMWifiUtils *data, const guint8 *ssid, gsize len); + +#endif /* __WIFI_UTILS_H__ */ |