/* * iwinfo - Wireless Information Library - Command line frontend * * Copyright (C) 2011 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/. */ #include #include #include "iwinfo.h" static char * format_bssid(unsigned char *mac) { static char buf[18]; snprintf(buf, sizeof(buf), "%02X:%02X:%02X:%02X:%02X:%02X", mac[0], mac[1], mac[2], mac[3], mac[4], mac[5]); return buf; } static char * format_ssid(char *ssid) { static char buf[IWINFO_ESSID_MAX_SIZE+3]; if (ssid && ssid[0]) snprintf(buf, sizeof(buf), "\"%s\"", ssid); else snprintf(buf, sizeof(buf), "unknown"); return buf; } static char * format_channel(int ch) { static char buf[8]; if (ch <= 0) snprintf(buf, sizeof(buf), "unknown"); else snprintf(buf, sizeof(buf), "%d", ch); return buf; } static char * format_frequency(int freq) { static char buf[10]; if (freq <= 0) snprintf(buf, sizeof(buf), "unknown"); else snprintf(buf, sizeof(buf), "%.3f GHz", ((float)freq / 1000.0)); return buf; } static char * format_txpower(int pwr) { static char buf[10]; if (pwr < 0) snprintf(buf, sizeof(buf), "unknown"); else snprintf(buf, sizeof(buf), "%d dBm", pwr); return buf; } static char * format_quality(int qual) { static char buf[8]; if (qual < 0) snprintf(buf, sizeof(buf), "unknown"); else snprintf(buf, sizeof(buf), "%d", qual); return buf; } static char * format_quality_max(int qmax) { static char buf[8]; if (qmax < 0) snprintf(buf, sizeof(buf), "unknown"); else snprintf(buf, sizeof(buf), "%d", qmax); return buf; } static char * format_signal(int sig) { static char buf[10]; if (!sig) snprintf(buf, sizeof(buf), "unknown"); else snprintf(buf, sizeof(buf), "%d dBm", sig); return buf; } static char * format_noise(int noise) { static char buf[10]; if (!noise) snprintf(buf, sizeof(buf), "unknown"); else snprintf(buf, sizeof(buf), "%d dBm", noise); return buf; } static char * format_rate(int rate) { static char buf[14]; if (rate <= 0) snprintf(buf, sizeof(buf), "unknown"); else snprintf(buf, sizeof(buf), "%d.%d MBit/s", rate / 1000, (rate % 1000) / 100); return buf; } static char * format_enc_ciphers(int ciphers) { static char str[128] = { 0 }; char *pos = str; if (ciphers & IWINFO_CIPHER_WEP40) pos += sprintf(pos, "WEP-40, "); if (ciphers & IWINFO_CIPHER_WEP104) pos += sprintf(pos, "WEP-104, "); if (ciphers & IWINFO_CIPHER_TKIP) pos += sprintf(pos, "TKIP, "); if (ciphers & IWINFO_CIPHER_CCMP) pos += sprintf(pos, "CCMP, "); if (ciphers & IWINFO_CIPHER_WRAP) pos += sprintf(pos, "WRAP, "); if (ciphers & IWINFO_CIPHER_AESOCB) pos += sprintf(pos, "AES-OCB, "); if (ciphers & IWINFO_CIPHER_CKIP) pos += sprintf(pos, "CKIP, "); if (!ciphers || (ciphers & IWINFO_CIPHER_NONE)) pos += sprintf(pos, "NONE, "); *(pos - 2) = 0; return str; } static char * format_enc_suites(int suites) { static char str[64] = { 0 }; char *pos = str; if (suites & IWINFO_KMGMT_PSK) pos += sprintf(pos, "PSK/"); if (suites & IWINFO_KMGMT_8021x) pos += sprintf(pos, "802.1X/"); if (!suites || (suites & IWINFO_KMGMT_NONE)) pos += sprintf(pos, "NONE/"); *(pos - 1) = 0; return str; } static char * format_encryption(struct iwinfo_crypto_entry *c) { static char buf[512]; if (!c) { snprintf(buf, sizeof(buf), "unknown"); } else if (c->enabled) { /* WEP */ if (c->auth_algs && !c->wpa_version) { if ((c->auth_algs & IWINFO_AUTH_OPEN) && (c->auth_algs & IWINFO_AUTH_SHARED)) { snprintf(buf, sizeof(buf), "WEP Open/Shared (%s)", format_enc_ciphers(c->pair_ciphers)); } else if (c->auth_algs & IWINFO_AUTH_OPEN) { snprintf(buf, sizeof(buf), "WEP Open System (%s)", format_enc_ciphers(c->pair_ciphers)); } else if (c->auth_algs & IWINFO_AUTH_SHARED) { snprintf(buf, sizeof(buf), "WEP Shared Auth (%s)", format_enc_ciphers(c->pair_ciphers)); } } /* WPA */ else if (c->wpa_version) { switch (c->wpa_version) { case 3: snprintf(buf, sizeof(buf), "mixed WPA/WPA2 %s (%s)", format_enc_suites(c->auth_suites), format_enc_ciphers(c->pair_ciphers | c->group_ciphers)); break; case 2: snprintf(buf, sizeof(buf), "WPA2 %s (%s)", format_enc_suites(c->auth_suites), format_enc_ciphers(c->pair_ciphers | c->group_ciphers)); break; case 1: snprintf(buf, sizeof(buf), "WPA %s (%s)", format_enc_suites(c->auth_suites), format_enc_ciphers(c->pair_ciphers | c->group_ciphers)); break; } } else { snprintf(buf, sizeof(buf), "none"); } } else { snprintf(buf, sizeof(buf), "none"); } return buf; } static char * format_hwmodes(int modes) { static char buf[12]; if (modes <= 0) snprintf(buf, sizeof(buf), "unknown"); else snprintf(buf, sizeof(buf), "802.11%s%s%s%s%s", (modes & IWINFO_80211_A) ? "a" : "", (modes & IWINFO_80211_B) ? "b" : "", (modes & IWINFO_80211_G) ? "g" : "", (modes & IWINFO_80211_N) ? "n" : "", (modes & IWINFO_80211_AC) ? "ac" : ""); return buf; } static char * format_assocrate(struct iwinfo_rate_entry *r) { static char buf[80]; char *p = buf; int l = sizeof(buf); if (r->rate <= 0) { snprintf(buf, sizeof(buf), "unknown"); } else { p += snprintf(p, l, "%s", format_rate(r->rate)); l = sizeof(buf) - (p - buf); if (r->is_ht) { p += snprintf(p, l, ", MCS %d, %dMHz", r->mcs, r->mhz); l = sizeof(buf) - (p - buf); } else if (r->is_vht) { p += snprintf(p, l, ", VHT-MCS %d, %dMHz", r->mcs, r->mhz); l = sizeof(buf) - (p - buf); if (r->nss) { p += snprintf(p, l, ", VHT-NSS %d", r->nss); l = sizeof(buf) - (p - buf); } } } return buf; } static const char * print_type(const struct iwinfo_ops *iw, const char *ifname) { const char *type = iwinfo_type(ifname); return type ? type : "unknown"; } static char * print_hardware_id(const struct iwinfo_ops *iw, const char *ifname) { static char buf[20]; struct iwinfo_hardware_id ids; if (!iw->hardware_id(ifname, (char *)&ids)) { snprintf(buf, sizeof(buf), "%04X:%04X %04X:%04X", ids.vendor_id, ids.device_id, ids.subsystem_vendor_id, ids.subsystem_device_id); } else { snprintf(buf, sizeof(buf), "unknown"); } return buf; } static char * print_hardware_name(const struct iwinfo_ops *iw, const char *ifname) { static char buf[128]; if (iw->hardware_name(ifname, buf)) snprintf(buf, sizeof(buf), "unknown"); return buf; } static char * print_txpower_offset(const struct iwinfo_ops *iw, const char *ifname) { int off; static char buf[12]; if (iw->txpower_offset(ifname, &off)) snprintf(buf, sizeof(buf), "unknown"); else if (off != 0) snprintf(buf, sizeof(buf), "%d dB", off); else snprintf(buf, sizeof(buf), "none"); return buf; } static char * print_frequency_offset(const struct iwinfo_ops *iw, const char *ifname) { int off; static char buf[12]; if (iw->frequency_offset(ifname, &off)) snprintf(buf, sizeof(buf), "unknown"); else if (off != 0) snprintf(buf, sizeof(buf), "%.3f GHz", ((float)off / 1000.0)); else snprintf(buf, sizeof(buf), "none"); return buf; } static char * print_ssid(const struct iwinfo_ops *iw, const char *ifname) { char buf[IWINFO_ESSID_MAX_SIZE+1] = { 0 }; if (iw->ssid(ifname, buf)) memset(buf, 0, sizeof(buf)); return format_ssid(buf); } static char * print_bssid(const struct iwinfo_ops *iw, const char *ifname) { static char buf[18] = { 0 }; if (iw->bssid(ifname, buf)) snprintf(buf, sizeof(buf), "00:00:00:00:00:00"); return buf; } static char * print_mode(const struct iwinfo_ops *iw, const char *ifname) { int mode; static char buf[128]; if (iw->mode(ifname, &mode)) mode = IWINFO_OPMODE_UNKNOWN; snprintf(buf, sizeof(buf), "%s", IWINFO_OPMODE_NAMES[mode]); return buf; } static char * print_channel(const struct iwinfo_ops *iw, const char *ifname) { int ch; if (iw->channel(ifname, &ch)) ch = -1; return format_channel(ch); } static char * print_frequency(const struct iwinfo_ops *iw, const char *ifname) { int freq; if (iw->frequency(ifname, &freq)) freq = -1; return format_frequency(freq); } static char * print_txpower(const struct iwinfo_ops *iw, const char *ifname) { int pwr, off; if (iw->txpower_offset(ifname, &off)) off = 0; if (iw->txpower(ifname, &pwr)) pwr = -1; else pwr += off; return format_txpower(pwr); } static char * print_quality(const struct iwinfo_ops *iw, const char *ifname) { int qual; if (iw->quality(ifname, &qual)) qual = -1; return format_quality(qual); } static char * print_quality_max(const struct iwinfo_ops *iw, const char *ifname) { int qmax; if (iw->quality_max(ifname, &qmax)) qmax = -1; return format_quality_max(qmax); } static char * print_signal(const struct iwinfo_ops *iw, const char *ifname) { int sig; if (iw->signal(ifname, &sig)) sig = 0; return format_signal(sig); } static char * print_noise(const struct iwinfo_ops *iw, const char *ifname) { int noise; if (iw->noise(ifname, &noise)) noise = 0; return format_noise(noise); } static char * print_rate(const struct iwinfo_ops *iw, const char *ifname) { int rate; if (iw->bitrate(ifname, &rate)) rate = -1; return format_rate(rate); } static char * print_encryption(const struct iwinfo_ops *iw, const char *ifname) { struct iwinfo_crypto_entry c = { 0 }; if (iw->encryption(ifname, (char *)&c)) return format_encryption(NULL); return format_encryption(&c); } static char * print_hwmodes(const struct iwinfo_ops *iw, const char *ifname) { int modes; if (iw->hwmodelist(ifname, &modes)) modes = -1; return format_hwmodes(modes); } static char * print_mbssid_supp(const struct iwinfo_ops *iw, const char *ifname) { int supp; static char buf[4]; if (iw->mbssid_support(ifname, &supp)) snprintf(buf, sizeof(buf), "no"); else snprintf(buf, sizeof(buf), "%s", supp ? "yes" : "no"); return buf; } static char * print_phyname(const struct iwinfo_ops *iw, const char *ifname) { static char buf[32]; if (!iw->phyname(ifname, buf)) return buf; return "?"; } static void print_info(const struct iwinfo_ops *iw, const char *ifname) { printf("%-9s ESSID: %s\n", ifname, print_ssid(iw, ifname)); printf(" Access Point: %s\n", print_bssid(iw, ifname)); printf(" Mode: %s Channel: %s (%s)\n", print_mode(iw, ifname), print_channel(iw, ifname), print_frequency(iw, ifname)); printf(" Tx-Power: %s Link Quality: %s/%s\n", print_txpower(iw, ifname), print_quality(iw, ifname), print_quality_max(iw, ifname)); printf(" Signal: %s Noise: %s\n", print_signal(iw, ifname), print_noise(iw, ifname)); printf(" Bit Rate: %s\n", print_rate(iw, ifname)); printf(" Encryption: %s\n", print_encryption(iw, ifname)); printf(" Type: %s HW Mode(s): %s\n", print_type(iw, ifname), print_hwmodes(iw, ifname)); printf(" Hardware: %s [%s]\n", print_hardware_id(iw, ifname), print_hardware_name(iw, ifname)); printf(" TX power offset: %s\n", print_txpower_offset(iw, ifname)); printf(" Frequency offset: %s\n", print_frequency_offset(iw, ifname)); printf(" Supports VAPs: %s PHY name: %s\n", print_mbssid_supp(iw, ifname), print_phyname(iw, ifname)); } static void print_scanlist(const struct iwinfo_ops *iw, const char *ifname) { int i, x, len; char buf[IWINFO_BUFSIZE]; struct iwinfo_scanlist_entry *e; if (iw->scanlist(ifname, buf, &len)) { printf("Scanning not possible\n\n"); return; } else if (len <= 0) { printf("No scan results\n\n"); return; } for (i = 0, x = 1; i < len; i += sizeof(struct iwinfo_scanlist_entry), x++) { e = (struct iwinfo_scanlist_entry *) &buf[i]; printf("Cell %02d - Address: %s\n", x, format_bssid(e->mac)); printf(" ESSID: %s\n", format_ssid(e->ssid)); printf(" Mode: %s Channel: %s\n", IWINFO_OPMODE_NAMES[e->mode], format_channel(e->channel)); printf(" Signal: %s Quality: %s/%s\n", format_signal(e->signal - 0x100), format_quality(e->quality), format_quality_max(e->quality_max)); printf(" Encryption: %s\n\n", format_encryption(&e->crypto)); } } static void print_txpwrlist(const struct iwinfo_ops *iw, const char *ifname) { int len, pwr, off, i; char buf[IWINFO_BUFSIZE]; struct iwinfo_txpwrlist_entry *e; if (iw->txpwrlist(ifname, buf, &len) || len <= 0) { printf("No TX power information available\n"); return; } if (iw->txpower(ifname, &pwr)) pwr = -1; if (iw->txpower_offset(ifname, &off)) off = 0; for (i = 0; i < len; i += sizeof(struct iwinfo_txpwrlist_entry)) { e = (struct iwinfo_txpwrlist_entry *) &buf[i]; printf("%s%3d dBm (%4d mW)\n", (pwr == e->dbm) ? "*" : " ", e->dbm + off, iwinfo_dbm2mw(e->dbm + off)); } } static void print_freqlist(const struct iwinfo_ops *iw, const char *ifname) { int i, len, ch; char buf[IWINFO_BUFSIZE]; struct iwinfo_freqlist_entry *e; if (iw->freqlist(ifname, buf, &len) || len <= 0) { printf("No frequency information available\n"); return; } if (iw->channel(ifname, &ch)) ch = -1; for (i = 0; i < len; i += sizeof(struct iwinfo_freqlist_entry)) { e = (struct iwinfo_freqlist_entry *) &buf[i]; printf("%s %s (Channel %s)%s\n", (ch == e->channel) ? "*" : " ", format_frequency(e->mhz), format_channel(e->channel), e->restricted ? " [restricted]" : ""); } } static void print_assoclist(const struct iwinfo_ops *iw, const char *ifname) { int i, len; char buf[IWINFO_BUFSIZE]; struct iwinfo_assoclist_entry *e; if (iw->assoclist(ifname, buf, &len)) { printf("No information available\n"); return; } else if (len <= 0) { printf("No station connected\n"); return; } for (i = 0; i < len; i += sizeof(struct iwinfo_assoclist_entry)) { e = (struct iwinfo_assoclist_entry *) &buf[i]; printf("%s %s / %s (SNR %d) %d ms ago\n", format_bssid(e->mac), format_signal(e->signal), format_noise(e->noise), (e->signal - e->noise), e->inactive); printf(" RX: %-38s %8d Pkts.\n", format_assocrate(&e->rx_rate), e->rx_packets ); printf(" TX: %-38s %8d Pkts.\n", format_assocrate(&e->tx_rate), e->tx_packets ); printf(" expected throughput: %s\n\n", format_rate(e->thr)); } } static char * lookup_country(char *buf, int len, int iso3166) { int i; struct iwinfo_country_entry *c; for (i = 0; i < len; i += sizeof(struct iwinfo_country_entry)) { c = (struct iwinfo_country_entry *) &buf[i]; if (c->iso3166 == iso3166) return c->ccode; } return NULL; } static void print_countrylist(const struct iwinfo_ops *iw, const char *ifname) { int len; char buf[IWINFO_BUFSIZE]; char *ccode; char curcode[3]; const struct iwinfo_iso3166_label *l; if (iw->countrylist(ifname, buf, &len)) { printf("No country code information available\n"); return; } if (iw->country(ifname, curcode)) memset(curcode, 0, sizeof(curcode)); for (l = IWINFO_ISO3166_NAMES; l->iso3166; l++) { if ((ccode = lookup_country(buf, len, l->iso3166)) != NULL) { printf("%s %4s %c%c\n", strncmp(ccode, curcode, 2) ? " " : "*", ccode, (l->iso3166 / 256), (l->iso3166 % 256)); } } } static void print_htmodelist(const struct iwinfo_ops *iw, const char *ifname) { int i, htmodes = 0; if (iw->htmodelist(ifname, &htmodes)) { printf("No HT mode information available\n"); return; } for (i = 0; i < ARRAY_SIZE(IWINFO_HTMODE_NAMES); i++) if (htmodes & (1 << i)) printf("%s ", IWINFO_HTMODE_NAMES[i]); printf("\n"); } static void lookup_phy(const struct iwinfo_ops *iw, const char *section) { char buf[IWINFO_BUFSIZE]; if (!iw->lookup_phy) { fprintf(stderr, "Not supported\n"); return; } if (iw->lookup_phy(section, buf)) { fprintf(stderr, "Phy not found\n"); return; } printf("%s\n", buf); } int main(int argc, char **argv) { int i, rv = 0; char *p; const struct iwinfo_ops *iw; glob_t globbuf; if (argc > 1 && argc < 3) { fprintf(stderr, "Usage:\n" " iwinfo info\n" " iwinfo scan\n" " iwinfo txpowerlist\n" " iwinfo freqlist\n" " iwinfo assoclist\n" " iwinfo countrylist\n" " iwinfo htmodelist\n" " iwinfo phyname
\n" ); return 1; } if (argc == 1) { glob("/sys/class/net/*", 0, NULL, &globbuf); for (i = 0; i < globbuf.gl_pathc; i++) { p = strrchr(globbuf.gl_pathv[i], '/'); if (!p) continue; iw = iwinfo_backend(++p); if (!iw) continue; print_info(iw, p); printf("\n"); } globfree(&globbuf); return 0; } if (argc > 3) { iw = iwinfo_backend_by_name(argv[1]); if (!iw) { fprintf(stderr, "No such wireless backend: %s\n", argv[1]); rv = 1; } else { switch (argv[2][0]) { case 'p': lookup_phy(iw, argv[3]); break; default: fprintf(stderr, "Unknown command: %s\n", argv[2]); rv = 1; } } } else { iw = iwinfo_backend(argv[1]); if (!iw) { fprintf(stderr, "No such wireless device: %s\n", argv[1]); rv = 1; } else { for (i = 2; i < argc; i++) { switch(argv[i][0]) { case 'i': print_info(iw, argv[1]); break; case 's': print_scanlist(iw, argv[1]); break; case 't': print_txpwrlist(iw, argv[1]); break; case 'f': print_freqlist(iw, argv[1]); break; case 'a': print_assoclist(iw, argv[1]); break; case 'c': print_countrylist(iw, argv[1]); break; case 'h': print_htmodelist(iw, argv[1]); break; default: fprintf(stderr, "Unknown command: %s\n", argv[i]); rv = 1; } } } } iwinfo_finish(); return rv; }