From 60e9be7f196f7fe48295fd50cbd322dbbaade63c Mon Sep 17 00:00:00 2001 From: jow Date: Sat, 3 Dec 2011 13:57:38 +0000 Subject: [package] add libiwinfo (moved from LuCI trunk) git-svn-id: svn://svn.openwrt.org/openwrt/trunk@29403 3c298f89-4303-0410-b956-a3cf2f4a3e73 --- package/iwinfo/src/iwinfo_wext.c | 462 +++++++++++++++++++++++++++++++++++++++ 1 file changed, 462 insertions(+) create mode 100644 package/iwinfo/src/iwinfo_wext.c (limited to 'package/iwinfo/src/iwinfo_wext.c') diff --git a/package/iwinfo/src/iwinfo_wext.c b/package/iwinfo/src/iwinfo_wext.c new file mode 100644 index 000000000..314882ad9 --- /dev/null +++ b/package/iwinfo/src/iwinfo_wext.c @@ -0,0 +1,462 @@ +/* + * iwinfo - Wireless Information Library - Linux Wireless Extension Backend + * + * Copyright (C) 2009 Jo-Philipp Wich + * + * The iwinfo library is free software: you can redistribute it and/or + * modify it under the terms of the GNU General Public License version 2 + * as published by the Free Software Foundation. + * + * The iwinfo 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 General Public License for more details. + * + * You should have received a copy of the GNU General Public License along + * with the iwinfo library. If not, see http://www.gnu.org/licenses/. + * + * Parts of this code are derived from the Linux wireless tools, iwlib.c, + * iwlist.c and iwconfig.c in particular. + */ + +#include "iwinfo.h" +#include "iwinfo/wext.h" + +static double wext_freq2float(const struct iw_freq *in) +{ + int i; + double res = (double) in->m; + for(i = 0; i < in->e; i++) res *= 10; + return res; +} + +static inline int wext_freq2mhz(const struct iw_freq *in) +{ + int i; + + if( in->e == 6 ) + { + return in->m; + } + else + { + return (int)(wext_freq2float(in) / 1000000); + } +} + +static inline int wext_ioctl(const char *ifname, int cmd, struct iwreq *wrq) +{ + if( !strncmp(ifname, "mon.", 4) ) + strncpy(wrq->ifr_name, &ifname[4], IFNAMSIZ); + else + strncpy(wrq->ifr_name, ifname, IFNAMSIZ); + + return iwinfo_ioctl(cmd, wrq); +} + + +int wext_probe(const char *ifname) +{ + struct iwreq wrq; + + if(wext_ioctl(ifname, SIOCGIWNAME, &wrq) >= 0) + return 1; + + return 0; +} + +void wext_close(void) +{ + /* Nop */ +} + +int wext_get_mode(const char *ifname, char *buf) +{ + struct iwreq wrq; + + if(wext_ioctl(ifname, SIOCGIWMODE, &wrq) >= 0) + { + switch(wrq.u.mode) + { + case 0: + sprintf(buf, "Auto"); + break; + + case 1: + sprintf(buf, "Ad-Hoc"); + break; + + case 2: + sprintf(buf, "Client"); + break; + + case 3: + sprintf(buf, "Master"); + break; + + case 4: + sprintf(buf, "Repeater"); + break; + + case 5: + sprintf(buf, "Secondary"); + break; + + case 6: + sprintf(buf, "Monitor"); + break; + + default: + sprintf(buf, "Unknown"); + } + + return 0; + } + + return -1; +} + +int wext_get_ssid(const char *ifname, char *buf) +{ + struct iwreq wrq; + + wrq.u.essid.pointer = (caddr_t) buf; + wrq.u.essid.length = IW_ESSID_MAX_SIZE + 1; + wrq.u.essid.flags = 0; + + if(wext_ioctl(ifname, SIOCGIWESSID, &wrq) >= 0) + return 0; + + return -1; +} + +int wext_get_bssid(const char *ifname, char *buf) +{ + struct iwreq wrq; + + if(wext_ioctl(ifname, SIOCGIWAP, &wrq) >= 0) + { + sprintf(buf, "%02X:%02X:%02X:%02X:%02X:%02X", + (uint8_t)wrq.u.ap_addr.sa_data[0], (uint8_t)wrq.u.ap_addr.sa_data[1], + (uint8_t)wrq.u.ap_addr.sa_data[2], (uint8_t)wrq.u.ap_addr.sa_data[3], + (uint8_t)wrq.u.ap_addr.sa_data[4], (uint8_t)wrq.u.ap_addr.sa_data[5]); + + return 0; + } + + return -1; +} + +int wext_get_bitrate(const char *ifname, int *buf) +{ + struct iwreq wrq; + + if(wext_ioctl(ifname, SIOCGIWRATE, &wrq) >= 0) + { + *buf = (wrq.u.bitrate.value / 1000); + return 0; + } + + return -1; +} + +int wext_get_channel(const char *ifname, int *buf) +{ + struct iwreq wrq; + struct iw_range range; + double freq; + int i; + + if(wext_ioctl(ifname, SIOCGIWFREQ, &wrq) >= 0) + { + if( wrq.u.freq.m >= 1000 ) + { + freq = wext_freq2float(&wrq.u.freq); + wrq.u.data.pointer = (caddr_t) ⦥ + wrq.u.data.length = sizeof(struct iw_range); + wrq.u.data.flags = 0; + + if(wext_ioctl(ifname, SIOCGIWRANGE, &wrq) >= 0) + { + for(i = 0; i < range.num_frequency; i++) + { + if( wext_freq2float(&range.freq[i]) == freq ) + { + *buf = range.freq[i].i; + return 0; + } + } + } + } + else + { + *buf = wrq.u.freq.m; + return 0; + } + } + + return -1; +} + +int wext_get_frequency(const char *ifname, int *buf) +{ + struct iwreq wrq; + struct iw_range range; + int i, channel; + + if(wext_ioctl(ifname, SIOCGIWFREQ, &wrq) >= 0) + { + /* We got a channel number instead ... */ + if( wrq.u.freq.m < 1000 ) + { + channel = wrq.u.freq.m; + wrq.u.data.pointer = (caddr_t) ⦥ + wrq.u.data.length = sizeof(struct iw_range); + wrq.u.data.flags = 0; + + if(wext_ioctl(ifname, SIOCGIWRANGE, &wrq) >= 0) + { + for(i = 0; i < range.num_frequency; i++) + { + if( range.freq[i].i == channel ) + { + *buf = wext_freq2mhz(&range.freq[i]); + return 0; + } + } + } + } + else + { + *buf = wext_freq2mhz(&wrq.u.freq); + return 0; + } + } + + return -1; +} + +int wext_get_txpower(const char *ifname, int *buf) +{ + struct iwreq wrq; + + wrq.u.txpower.flags = 0; + + if(wext_ioctl(ifname, SIOCGIWTXPOW, &wrq) >= 0) + { + if(wrq.u.txpower.flags & IW_TXPOW_MWATT) + *buf = iwinfo_mw2dbm(wrq.u.txpower.value); + else + *buf = wrq.u.txpower.value; + + return 0; + } + + return -1; +} + +int wext_get_signal(const char *ifname, int *buf) +{ + struct iwreq wrq; + struct iw_statistics stats; + + wrq.u.data.pointer = (caddr_t) &stats; + wrq.u.data.length = sizeof(struct iw_statistics); + wrq.u.data.flags = 1; + + if(wext_ioctl(ifname, SIOCGIWSTATS, &wrq) >= 0) + { + *buf = (stats.qual.updated & IW_QUAL_DBM) + ? (stats.qual.level - 0x100) : stats.qual.level; + + return 0; + } + + return -1; +} + +int wext_get_noise(const char *ifname, int *buf) +{ + struct iwreq wrq; + struct iw_statistics stats; + + wrq.u.data.pointer = (caddr_t) &stats; + wrq.u.data.length = sizeof(struct iw_statistics); + wrq.u.data.flags = 1; + + if(wext_ioctl(ifname, SIOCGIWSTATS, &wrq) >= 0) + { + *buf = (stats.qual.updated & IW_QUAL_DBM) + ? (stats.qual.noise - 0x100) : stats.qual.noise; + + return 0; + } + + return -1; +} + +int wext_get_quality(const char *ifname, int *buf) +{ + struct iwreq wrq; + struct iw_statistics stats; + + wrq.u.data.pointer = (caddr_t) &stats; + wrq.u.data.length = sizeof(struct iw_statistics); + wrq.u.data.flags = 1; + + if(wext_ioctl(ifname, SIOCGIWSTATS, &wrq) >= 0) + { + *buf = stats.qual.qual; + return 0; + } + + return -1; +} + +int wext_get_quality_max(const char *ifname, int *buf) +{ + struct iwreq wrq; + struct iw_range range; + + wrq.u.data.pointer = (caddr_t) ⦥ + wrq.u.data.length = sizeof(struct iw_range); + wrq.u.data.flags = 0; + + if(wext_ioctl(ifname, SIOCGIWRANGE, &wrq) >= 0) + { + *buf = range.max_qual.qual; + return 0; + } + + return -1; +} + +int wext_get_assoclist(const char *ifname, char *buf, int *len) +{ + /* Stub */ + return -1; +} + +int wext_get_txpwrlist(const char *ifname, char *buf, int *len) +{ + struct iwreq wrq; + struct iw_range range; + struct iwinfo_txpwrlist_entry entry; + int i; + + wrq.u.data.pointer = (caddr_t) ⦥ + wrq.u.data.length = sizeof(struct iw_range); + wrq.u.data.flags = 0; + + if( (wext_ioctl(ifname, SIOCGIWRANGE, &wrq) >= 0) && + (range.num_txpower > 0) && (range.num_txpower <= IW_MAX_TXPOWER) && + !(range.txpower_capa & IW_TXPOW_RELATIVE) + ) { + for( i = 0; i < range.num_txpower; i++ ) + { + if( range.txpower_capa & IW_TXPOW_MWATT ) + { + entry.dbm = iwinfo_mw2dbm(range.txpower[i]); + entry.mw = range.txpower[i]; + } + + /* Madwifi does neither set mW not dBm caps, also iwlist assumes + * dBm if mW is not set, so don't check here... */ + else /* if( range.txpower_capa & IW_TXPOW_DBM ) */ + { + entry.dbm = range.txpower[i]; + entry.mw = iwinfo_dbm2mw(range.txpower[i]); + } + + memcpy(&buf[i*sizeof(entry)], &entry, sizeof(entry)); + } + + *len = i * sizeof(entry); + return 0; + } + + return -1; +} + +int wext_get_freqlist(const char *ifname, char *buf, int *len) +{ + struct iwreq wrq; + struct iw_range range; + struct iwinfo_freqlist_entry entry; + int i, bl; + + wrq.u.data.pointer = (caddr_t) ⦥ + wrq.u.data.length = sizeof(struct iw_range); + wrq.u.data.flags = 0; + + if(wext_ioctl(ifname, SIOCGIWRANGE, &wrq) >= 0) + { + bl = 0; + + for(i = 0; i < range.num_frequency; i++) + { + entry.mhz = wext_freq2mhz(&range.freq[i]); + entry.channel = range.freq[i].i; + entry.restricted = 0; + + memcpy(&buf[bl], &entry, sizeof(struct iwinfo_freqlist_entry)); + bl += sizeof(struct iwinfo_freqlist_entry); + } + + *len = bl; + return 0; + } + + return -1; +} + +int wext_get_country(const char *ifname, char *buf) +{ + sprintf(buf, "00"); + return 0; +} + +int wext_get_countrylist(const char *ifname, char *buf, int *len) +{ + /* Stub */ + return -1; +} + +int wext_get_hwmodelist(const char *ifname, int *buf) +{ + char chans[IWINFO_BUFSIZE] = { 0 }; + struct iwinfo_freqlist_entry *e = NULL; + int len = 0; + + if( !wext_get_freqlist(ifname, chans, &len) ) + { + for( e = (struct iwinfo_freqlist_entry *)chans; e->channel; e++ ) + { + if( e->channel <= 14 ) + { + *buf |= IWINFO_80211_B; + *buf |= IWINFO_80211_G; + } + else + { + *buf |= IWINFO_80211_A; + } + } + + return 0; + } + + return -1; +} + +int wext_get_encryption(const char *ifname, char *buf) +{ + /* No reliable crypto info in wext */ + return -1; +} + +int wext_get_mbssid_support(const char *ifname, int *buf) +{ + /* No multi bssid support atm */ + return -1; +} -- cgit v1.2.3