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Diffstat (limited to 'package/wificonf/wificonf.c')
| -rw-r--r-- | package/wificonf/wificonf.c | 396 |
1 files changed, 396 insertions, 0 deletions
diff --git a/package/wificonf/wificonf.c b/package/wificonf/wificonf.c new file mode 100644 index 0000000000..eb09769e46 --- /dev/null +++ b/package/wificonf/wificonf.c @@ -0,0 +1,396 @@ +/* + * Wireless Network Adapter configuration utility + * + * Copyright (C) 2005 Felix Fietkau <nbd@vd-s.ath.cx> + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * This program 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. + */ + +#include <stdio.h> +#include <unistd.h> +#include <iwlib.h> +#include <bcmnvram.h> +#include <shutils.h> +#include <wlioctl.h> + +/*------------------------------------------------------------------*/ +/* + * Macro to handle errors when setting WE + * Print a nice error message and exit... + * We define them as macro so that "return" do the right thing. + * The "do {...} while(0)" is a standard trick + */ +#define ERR_SET_EXT(rname, request) \ + fprintf(stderr, "Error for wireless request \"%s\" (%X) :\n", \ + rname, request) + +#define ABORT_ARG_NUM(rname, request) \ + do { \ + ERR_SET_EXT(rname, request); \ + fprintf(stderr, " too few arguments.\n"); \ + return; \ + } while(0) + +#define ABORT_ARG_TYPE(rname, request, arg) \ + do { \ + ERR_SET_EXT(rname, request); \ + fprintf(stderr, " invalid argument \"%s\".\n", arg); \ + return; \ + } while(0) + +#define ABORT_ARG_SIZE(rname, request, max) \ + do { \ + ERR_SET_EXT(rname, request); \ + fprintf(stderr, " argument too big (max %d)\n", max); \ + return; \ + } while(0) + +/*------------------------------------------------------------------*/ +/* + * Wrapper to push some Wireless Parameter in the driver + * Use standard wrapper and add pretty error message if fail... + */ +#define IW_SET_EXT_ERR(skfd, ifname, request, wrq, rname) \ + do { \ + if(iw_set_ext(skfd, ifname, request, wrq) < 0) { \ + ERR_SET_EXT(rname, request); \ + fprintf(stderr, " SET failed on device %-1.16s ; %s.\n", \ + ifname, strerror(errno)); \ + return; \ + } } while(0) + +/*------------------------------------------------------------------*/ +/* + * Wrapper to extract some Wireless Parameter out of the driver + * Use standard wrapper and add pretty error message if fail... + */ +#define IW_GET_EXT_ERR(skfd, ifname, request, wrq, rname) \ + do { \ + if(iw_get_ext(skfd, ifname, request, wrq) < 0) { \ + ERR_SET_EXT(rname, request); \ + fprintf(stderr, " GET failed on device %-1.16s ; %s.\n", \ + ifname, strerror(errno)); \ + return; \ + } } while(0) + +char *prefix; +char buffer[128]; + +char *wl_var(char *name) +{ + strcpy(buffer, prefix); + strcat(buffer, name); +} + +int nvram_enabled(char *name) +{ + return (nvram_match(name, "1") || nvram_match(name, "on") || nvram_match(name, "enabled") ? 1 : 0); +} + +int nvram_disabled(char *name) +{ + return (nvram_match(name, "0") || nvram_match(name, "off") || nvram_match(name, "disabled") ? 1 : 0); +} + + +int bcom_ioctl(int skfd, char *ifname, int cmd, void *buf, int len) +{ + struct ifreq ifr; + wl_ioctl_t ioc; + int ret; + + ioc.cmd = cmd; + ioc.buf = buf; + ioc.len = len; + + ifr.ifr_data = (caddr_t) &ioc; + strncpy(ifr.ifr_name, ifname, IFNAMSIZ); + + ret = ioctl(skfd, SIOCDEVPRIVATE, &ifr); + if (ret < 0) + fprintf(stderr, "bcom_ioctl [cmd=%d, buf=%08x, len=%d] failed: %d\n", cmd, buf, len, ret); + + return ret; +} + +int bcom_set_val(int skfd, char *ifname, char *var, void *val, int len) +{ + char buf[8192]; + int ret; + + if (strlen(var) + 1 > sizeof(buf) || len > sizeof(buf)) + return -1; + + strcpy(buf, var); + + if ((ret = bcom_ioctl(skfd, ifname, WLC_GET_VAR, buf, sizeof(buf)))) + return ret; + + memcpy(val, buf, len); + return 0; +} + +int bcom_set_int(int skfd, char *ifname, char *var, int val) +{ + return bcom_set_val(skfd, ifname, var, &val, sizeof(val)); +} + +void setup_bcom(int skfd, char *ifname) +{ + int val = 0; + char *v; + + if (bcom_ioctl(skfd, ifname, WLC_GET_MAGIC, &val, sizeof(val)) < 0) + return; + + bcom_ioctl(skfd, ifname, WLC_DOWN, NULL, 0); + + /* Set up WPA */ + if (nvram_match(wl_var("crypto"), "tkip")) + val = TKIP_ENABLED; + else if (nvram_match(wl_var("crypto"), "aes")) + val = AES_ENABLED; + else if (nvram_match(wl_var("crypto"), "tkip+aes")) + val = TKIP_ENABLED | AES_ENABLED; + bcom_ioctl(skfd, ifname, WLC_SET_WSEC, &val, sizeof(val)); + + if (val && nvram_get(wl_var("wpa_psk"))) { + val = 1; + bcom_ioctl(skfd, ifname, WLC_SET_EAP_RESTRICT, &val, sizeof(val)); + } + + /* Set up afterburner */ + val = ABO_AUTO; + if (nvram_enabled(wl_var("afterburner"))) + val = ABO_ON; + if (nvram_disabled(wl_var("afterburner"))) + val = ABO_OFF; + bcom_set_val(skfd, ifname, "afterburner_override", &val, sizeof(val)); + + /* Set other options */ + val = atoi(nvram_safe_get(wl_var("lazywds"))); + bcom_ioctl(skfd, ifname, WLC_SET_LAZYWDS, &val, sizeof(val)); + val = atoi(nvram_safe_get(wl_var("frag"))); + bcom_ioctl(skfd, ifname, WLC_SET_FRAG, &val, sizeof(val)); + val = atoi(nvram_safe_get(wl_var("dtim"))); + bcom_ioctl(skfd, ifname, WLC_SET_DTIMPRD, &val, sizeof(val)); + val = atoi(nvram_safe_get(wl_var("bcn"))); + bcom_ioctl(skfd, ifname, WLC_SET_BCNPRD, &val, sizeof(val)); + val = atoi(nvram_safe_get(wl_var("rts"))); + bcom_ioctl(skfd, ifname, WLC_SET_RTS, &val, sizeof(val)); + val = atoi(nvram_safe_get(wl_var("antdiv"))); + bcom_ioctl(skfd, ifname, WLC_SET_ANTDIV, &val, sizeof(val)); + val = atoi(nvram_safe_get(wl_var("txant"))); + bcom_ioctl(skfd, ifname, WLC_SET_TXANT, &val, sizeof(val)); + + val = nvram_enabled(wl_var("ap_isolate")); + bcom_set_int(skfd, ifname, "ap_isolate", val); + val = nvram_enabled(wl_var("frameburst")); + bcom_ioctl(skfd, ifname, WLC_SET_FAKEFRAG, &val, sizeof(val)); + + /* Set up MAC list */ + if (nvram_match(wl_var("macmode"), "allow")) + val = WLC_MACMODE_ALLOW; + else if (nvram_match(wl_var("macmode"), "deny")) + val = WLC_MACMODE_DENY; + else + val = WLC_MACMODE_DISABLED; + + if ((val != WLC_MACMODE_DISABLED) && (v = nvram_get(wl_var("maclist")))) { + char buf[8192]; + struct maclist *mac_list; + struct ether_addr *addr; + char *next; + + memset(buf, 0, 8192); + mac_list = (struct maclist *) buf; + addr = mac_list->ea; + + foreach(v, nvram_safe_get(wl_var("maclist")), next) { + if (ether_atoe(v, addr->ether_addr_octet)) { + mac_list->count++; + addr++; + } + } + bcom_ioctl(skfd, ifname, WLC_SET_MACLIST, buf, sizeof(buf)); + } else { + val = WLC_MACMODE_DISABLED; + } + bcom_ioctl(skfd, ifname, WLC_SET_MACMODE, &val, sizeof(val)); + + /* Set up G mode */ + bcom_ioctl(skfd, ifname, WLC_GET_PHYTYPE, &val, sizeof(val)); + if (val == 2) { + int override = WLC_G_PROTECTION_OFF; + int control = WLC_G_PROTECTION_CTL_OFF; + + val = atoi(nvram_safe_get(wl_var("gmode"))); + if (val > 5) + val = 1; + bcom_ioctl(skfd, ifname, WLC_SET_GMODE, &val, sizeof(val)); + + if (nvram_match(wl_var("gmode_protection"), "auto")) { + override = WLC_G_PROTECTION_AUTO; + control = WLC_G_PROTECTION_CTL_OVERLAP; + } + if (nvram_enabled(wl_var("gmode_protection"))) { + override = WLC_G_PROTECTION_ON; + control = WLC_G_PROTECTION_CTL_OVERLAP; + } + bcom_ioctl(skfd, ifname, WLC_SET_GMODE_PROTECTION_CONTROL, &override, sizeof(control)); + bcom_ioctl(skfd, ifname, WLC_SET_GMODE_PROTECTION_OVERRIDE, &override, sizeof(override)); + } +} + +void set_wext_ssid(int skfd, char *ifname) +{ + char *buffer; + struct iwreq wrq; + + if (buffer = nvram_get(wl_var("ssid"))) { + if (strlen(buffer) > IW_ESSID_MAX_SIZE) { + ABORT_ARG_SIZE("Set ESSID", SIOCSIWESSID, IW_ESSID_MAX_SIZE); + } else { + char essid[IW_ESSID_MAX_SIZE + 1]; + + wrq.u.essid.flags = 1; + strcpy(essid, buffer); + wrq.u.essid.pointer = (caddr_t) essid; + wrq.u.essid.length = strlen(essid) + 1; + IW_SET_EXT_ERR(skfd, ifname, SIOCSIWESSID, &wrq, "Set ESSID"); + } + } +} + +void start_bcom(int skfd, char *ifname) +{ + int val = 0; + + if (bcom_ioctl(skfd, ifname, WLC_GET_MAGIC, &val, sizeof(val)) < 0) + return; + + bcom_ioctl(skfd, ifname, WLC_UP, &val, sizeof(val)); + + /* Need to re-set SSID after WLC_UP */ + set_wext_ssid(skfd, ifname); +} + +void setup_wext_wep(int skfd, char *ifname) +{ + int i, keylen; + struct iwreq wrq; + char keystr[5]; + char *keyval; + unsigned char key[IW_ENCODING_TOKEN_MAX]; + + strcpy(keystr, "key1"); + for (i = 1; i <= 4; i++) { + if (keyval = nvram_get(wl_var(keystr))) { + keylen = iw_in_key(keyval, key); + + if (keylen > 0) { + wrq.u.data.length = keylen; + wrq.u.data.pointer = (caddr_t) key; + wrq.u.data.flags = i; + IW_SET_EXT_ERR(skfd, ifname, SIOCSIWENCODE, &wrq, "Set Encode"); + } + } + keystr[3]++; + } + + + i = atoi(nvram_safe_get(wl_var("key"))); + if (i > 0 && i < 4) { + wrq.u.data.flags = i | IW_ENCODE_RESTRICTED; + IW_SET_EXT_ERR(skfd, ifname, SIOCSIWENCODE, &wrq, "Set Encode"); + } +} + +void setup_wext(int skfd, char *ifname) +{ + char *buffer; + struct iwreq wrq; + + /* Set ESSID */ + set_wext_ssid(skfd, ifname); + + /* Set channel */ + int channel = atoi(nvram_safe_get(wl_var("channel"))); + + wrq.u.freq.m = -1; + wrq.u.freq.e = 0; + wrq.u.freq.flags = 0; + + if (channel > 0) { + wrq.u.freq.flags = IW_FREQ_FIXED; + wrq.u.freq.m = channel; + } + IW_SET_EXT_ERR(skfd, ifname, SIOCSIWFREQ, &wrq, "Set Frequency"); + + /* Set operation mode */ + int ap = 0, infra = 0, wet = 0; + + ap = (nvram_match(wl_var("mode"), "ap") || nvram_match(wl_var("mode"), "wds")); + infra = nvram_enabled(wl_var("infra")); + wet = nvram_enabled(wl_var("wet")); + + wrq.u.mode = (!infra ? IW_MODE_ADHOC : (ap ? IW_MODE_MASTER : (wet ? IW_MODE_REPEAT : IW_MODE_INFRA))); + IW_SET_EXT_ERR(skfd, ifname, SIOCSIWMODE, &wrq, "Set Mode"); + + /* Disable radio if wlX_radio is set and not enabled */ + if (nvram_disabled(wl_var("radio"))) + wrq.u.txpower.disabled = 1; + else + wrq.u.txpower.disabled = 0; + + wrq.u.txpower.value = -1; + wrq.u.txpower.fixed = 1; + wrq.u.txpower.flags = IW_TXPOW_MWATT; + IW_SET_EXT_ERR(skfd, ifname, SIOCSIWTXPOW, &wrq, "Set Tx Power"); + + /* Set up WEP */ + if (nvram_enabled(wl_var("wep"))) + setup_wext_wep(skfd, ifname); + +} + + +static int setup_interfaces(int skfd, char *ifname, char *args[], int count) +{ + struct iwreq wrq; + int rc; + + /* Avoid "Unused parameter" warning */ + args = args; count = count; + + if(iw_get_ext(skfd, ifname, SIOCGIWNAME, &wrq) < 0) + return 0; + + setup_bcom(skfd, ifname); + setup_wext(skfd, ifname); + start_bcom(skfd, ifname); + prefix[2]++; +} + +int main(int argc, char **argv) +{ + int skfd; + + if((skfd = iw_sockets_open()) < 0) { + perror("socket"); + exit(-1); + } + + prefix = strdup("wl0_"); + iw_enum_devices(skfd, &setup_interfaces, NULL, 0); + + return 0; +} |