diff options
Diffstat (limited to 'libs/luanet/src/iwconfig.c')
| -rw-r--r-- | libs/luanet/src/iwconfig.c | 829 |
1 files changed, 829 insertions, 0 deletions
diff --git a/libs/luanet/src/iwconfig.c b/libs/luanet/src/iwconfig.c new file mode 100644 index 000000000..5fc65b607 --- /dev/null +++ b/libs/luanet/src/iwconfig.c @@ -0,0 +1,829 @@ +/* + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + * + * Copyright (C) 2008 John Crispin <blogic@openwrt.org> + * Copyright (C) 2008 Steven Barth <steven@midlink.org> + */ + +#include <net/if.h> +#include <net/if_arp.h> +#include <net/route.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <linux/sockios.h> +#include "iwlib.h" + +#include <lua.h> +#include <lualib.h> +#include <lauxlib.h> + +#include "helper.h" + +static int sock_iwconfig = 0; + +typedef struct iwscan_state +{ + /* State */ + int ap_num; /* Access Point number 1->N */ + int val_index; /* Value in table 0->(N-1) */ +} iwscan_state; + +int iwc_startup(void) +{ + if(!sock_iwconfig) + sock_iwconfig = iw_sockets_open(); + return sock_iwconfig; +} + +void iwc_shutdown(void) +{ + if(!sock_iwconfig) + return; + iw_sockets_close(sock_iwconfig); + sock_iwconfig = 0; +} + +/* taken from wireless tools */ +static int +get_info(char * ifname, struct wireless_info * info) +{ + struct iwreq wrq; + + memset((char*) info, 0, sizeof(struct wireless_info)); + + /* Get basic information */ + if(iw_get_basic_config(sock_iwconfig, ifname, &(info->b)) < 0) + { + /* If no wireless name : no wireless extensions */ + /* But let's check if the interface exists at all */ + struct ifreq ifr; + + strncpy(ifr.ifr_name, ifname, IFNAMSIZ); + if(ioctl(sock_iwconfig, SIOCGIFFLAGS, &ifr) < 0) + return(-ENODEV); + else + return(-ENOTSUP); + } + + /* Get ranges */ + if(iw_get_range_info(sock_iwconfig, ifname, &(info->range)) >= 0) + info->has_range = 1; + + /* Get AP address */ + if(iw_get_ext(sock_iwconfig, ifname, SIOCGIWAP, &wrq) >= 0) + { + info->has_ap_addr = 1; + memcpy(&(info->ap_addr), &(wrq.u.ap_addr), sizeof (sockaddr)); + } + + /* Get bit rate */ + if(iw_get_ext(sock_iwconfig, ifname, SIOCGIWRATE, &wrq) >= 0) + { + info->has_bitrate = 1; + memcpy(&(info->bitrate), &(wrq.u.bitrate), sizeof(iwparam)); + } + + /* Get Power Management settings */ + wrq.u.power.flags = 0; + if(iw_get_ext(sock_iwconfig, ifname, SIOCGIWPOWER, &wrq) >= 0) + { + info->has_power = 1; + memcpy(&(info->power), &(wrq.u.power), sizeof(iwparam)); + } + + /* Get stats */ + if(iw_get_stats(sock_iwconfig, ifname, &(info->stats), + &info->range, info->has_range) >= 0) + { + info->has_stats = 1; + } + + /* Get NickName */ + wrq.u.essid.pointer = (caddr_t) info->nickname; + wrq.u.essid.length = IW_ESSID_MAX_SIZE + 1; + wrq.u.essid.flags = 0; + if(iw_get_ext(sock_iwconfig, ifname, SIOCGIWNICKN, &wrq) >= 0) + if(wrq.u.data.length > 1) + info->has_nickname = 1; + + if((info->has_range) && (info->range.we_version_compiled > 9)) + { + /* Get Transmit Power */ + if(iw_get_ext(sock_iwconfig, ifname, SIOCGIWTXPOW, &wrq) >= 0) + { + info->has_txpower = 1; + memcpy(&(info->txpower), &(wrq.u.txpower), sizeof(iwparam)); + } + } + + /* Get sensitivity */ + if(iw_get_ext(sock_iwconfig, ifname, SIOCGIWSENS, &wrq) >= 0) + { + info->has_sens = 1; + memcpy(&(info->sens), &(wrq.u.sens), sizeof(iwparam)); + } + + if((info->has_range) && (info->range.we_version_compiled > 10)) + { + /* Get retry limit/lifetime */ + if(iw_get_ext(sock_iwconfig, ifname, SIOCGIWRETRY, &wrq) >= 0) + { + info->has_retry = 1; + memcpy(&(info->retry), &(wrq.u.retry), sizeof(iwparam)); + } + } + + /* Get RTS threshold */ + if(iw_get_ext(sock_iwconfig, ifname, SIOCGIWRTS, &wrq) >= 0) + { + info->has_rts = 1; + memcpy(&(info->rts), &(wrq.u.rts), sizeof(iwparam)); + } + + /* Get fragmentation threshold */ + if(iw_get_ext(sock_iwconfig, ifname, SIOCGIWFRAG, &wrq) >= 0) + { + info->has_frag = 1; + memcpy(&(info->frag), &(wrq.u.frag), sizeof(iwparam)); + } + + return(0); +} + +void iwc_get(lua_State *L, char *ifname) +{ + struct wireless_info info; + int rc = get_info(ifname, &info); + char buffer[128]; + if(rc) + return; + + lua_pushstring(L, ifname); + lua_newtable(L); + + if(info.b.has_essid) + { + if(info.b.essid_on) + add_table_entry(L, "essid", info.b.essid); + else + add_table_entry(L, "essid", "off"); + } + + if(info.b.has_mode) + add_table_entry(L, "mode", iw_operation_mode[info.b.mode]); + + if(info.b.has_freq) + { + double freq = info.b.freq; /* Frequency/channel */ + int channel = -1; /* Converted to channel */ + char tmp[4]; + if(info.has_range && (freq < KILO)) + channel = iw_channel_to_freq((int) freq, &freq, &info.range); + iw_print_freq(buffer, sizeof(buffer), freq, -1, info.b.freq_flags); + snprintf(tmp, 4, "%d", channel); + add_table_entry(L, "channel", tmp); + add_table_entry(L, "freq", buffer); + } + + if(info.has_ap_addr) + add_table_entry(L, "macap", iw_sawap_ntop(&info.ap_addr, buffer)); + + if(info.has_bitrate) + { + iw_print_bitrate(buffer, sizeof(buffer), info.bitrate.value); + add_table_entry(L, "bitrate", buffer); + } + + if(info.has_txpower) + { + iw_print_txpower(buffer, sizeof(buffer), &info.txpower); + add_table_entry(L, "txpower", buffer); + } + lua_settable(L, -3); +} + +int iwc_getall(lua_State *L) +{ + FILE *fp; + char buffer[128]; + char *b = buffer; + fp = fopen("/proc/net/wireless", "r"); + if(!fp) + return -1; + fgets(buffer, 128, fp); + fgets(buffer, 128, fp); + lua_newtable(L); + while(fgets(buffer, 128, fp)) + { + char *t; + b = buffer; + while(*b == ' ') + b++; + t = strstr(b, ":"); + if(t) + *t = '\0'; + iwc_get(L, b); + } + return 1; +} + +/* taken from wireless tools */ +int iwc_set_essid(lua_State *L) +{ + struct iwreq wrq; + int i = 1; + char essid[IW_ESSID_MAX_SIZE + 1]; + int we_kernel_version; + char *ifname, *e; + if(lua_gettop(L) != 2) + { + lua_pushstring(L, "invalid arg list"); + lua_error(L); + return 0; + } + ifname = (char *)lua_tostring (L, 1); + e = (char *)lua_tostring (L, 2); + + if((!strcasecmp(e, "off")) | (!strcasecmp(e, "any"))) + { + wrq.u.essid.flags = 0; + essid[0] = '\0'; + } else if(!strcasecmp(e, "on")) + { + /* Get old essid */ + memset(essid, '\0', sizeof(essid)); + wrq.u.essid.pointer = (caddr_t) essid; + wrq.u.essid.length = IW_ESSID_MAX_SIZE + 1; + wrq.u.essid.flags = 0; + if(iw_get_ext(sock_iwconfig, ifname, SIOCGIWESSID, &wrq) < 0) + return 0; + wrq.u.essid.flags = 1; + } else { + wrq.u.essid.flags = 1; + strcpy(essid, e); /* Size checked, all clear */ + i++; + } + + /* Get version from kernel, device may not have range... */ + we_kernel_version = iw_get_kernel_we_version(); + + /* Finally set the ESSID value */ + wrq.u.essid.pointer = (caddr_t) essid; + wrq.u.essid.length = strlen(essid); + if(we_kernel_version < 21) + wrq.u.essid.length++; + + if(!iw_set_ext(sock_iwconfig, ifname, SIOCSIWESSID, &wrq)) + lua_pushboolean(L, 1); + else + lua_pushboolean(L, 0); + return 1; +} + +/* taken from wireless tools */ +int iwc_set_mode(lua_State *L) +{ + struct iwreq wrq; + unsigned int k; /* Must be unsigned */ + char *ifname, *mode; + + if(lua_gettop(L) != 2) + { + lua_pushstring(L, "invalid arg list"); + lua_error(L); + return 0; + } + ifname = (char *)lua_tostring (L, 1); + mode = (char *)lua_tostring (L, 2); + + /* Check if it is a uint, otherwise get is as a string */ + if(sscanf(mode, "%ui", &k) != 1) + { + k = 0; + while((k < IW_NUM_OPER_MODE) && strncasecmp(mode, iw_operation_mode[k], 3)) + k++; + } + if(k >= IW_NUM_OPER_MODE) + return 0; + + wrq.u.mode = k; + if(!iw_set_ext(sock_iwconfig, ifname, SIOCSIWMODE, &wrq)) + lua_pushboolean(L, 1); + else + lua_pushboolean(L, 0); + return 1; +} + +int iwc_set_channel(lua_State *L) +{ + struct iwreq wrq; + char *ifname; + int channel; + if(lua_gettop(L) != 2) + { + lua_pushstring(L, "invalid arg list"); + lua_error(L); + return 0; + } + ifname = (char *)lua_tostring (L, 1); + channel = (int)lua_tointeger(L, 2); + + if(channel == -1) + { + wrq.u.freq.m = -1; + wrq.u.freq.e = 0; + wrq.u.freq.flags = 0; + } else { + iw_float2freq(channel, &wrq.u.freq); + wrq.u.freq.flags = IW_FREQ_FIXED; + } + if(!iw_set_ext(sock_iwconfig, ifname, SIOCSIWFREQ, &wrq)) + lua_pushboolean(L, 1); + else + lua_pushboolean(L, 0); + return 1; +} + +static const char * iw_ie_cypher_name[] = { + "none", + "WEP-40", + "TKIP", + "WRAP", + "CCMP", + "WEP-104", +}; +#define IW_ARRAY_LEN(x) (sizeof(x)/sizeof((x)[0])) +#define IW_IE_CYPHER_NUM IW_ARRAY_LEN(iw_ie_cypher_name) + +static const char * iw_ie_key_mgmt_name[] = { + "none", + "802.1x", + "PSK", +}; +#define IW_IE_KEY_MGMT_NUM IW_ARRAY_LEN(iw_ie_key_mgmt_name) + +static inline void iw_print_ie_wpa(lua_State *L, unsigned char * iebuf, int buflen) +{ + int ielen = iebuf[1] + 2; + int offset = 2; /* Skip the IE id, and the length. */ + unsigned char wpa1_oui[3] = {0x00, 0x50, 0xf2}; + unsigned char wpa2_oui[3] = {0x00, 0x0f, 0xac}; + unsigned char *wpa_oui; + int i; + uint16_t ver = 0; + uint16_t cnt = 0; + int wpa1 = 0, wpa2 = 0; + char buf[256]; + if(ielen > buflen) + ielen = buflen; + + switch(iebuf[0]) + { + case 0x30: /* WPA2 */ + /* Check if we have enough data */ + if(ielen < 4) + return; + wpa_oui = wpa2_oui; + break; + + case 0xdd: /* WPA or else */ + wpa_oui = wpa1_oui; + /* Not all IEs that start with 0xdd are WPA. + * * So check that the OUI is valid. */ + if((ielen < 8) + || ((memcmp(&iebuf[offset], wpa_oui, 3) != 0) + && (iebuf[offset+3] == 0x01))) + { + return; + } + + offset += 4; + break; + + default: + return; + } + + /* Pick version number (little endian) */ + ver = iebuf[offset] | (iebuf[offset + 1] << 8); + offset += 2; + + if(iebuf[0] == 0xdd) + wpa1 = 1; + if(iebuf[0] == 0x30) + wpa2 = 1; + + if(ielen < (offset + 4)) + { + if(wpa1) + { + add_table_entry(L, "wpa1gcipher", "TKIP"); + add_table_entry(L, "wpa1pcipher", "TKIP"); + } else { + add_table_entry(L, "wpa2gcipher", "TKIP"); + add_table_entry(L, "wpa2pcipher", "TKIP"); + } + return; + } + + if(memcmp(&iebuf[offset], wpa_oui, 3) != 0) + { + if(wpa1) + add_table_entry(L, "wpa1gcipher", "Proprietary"); + else + add_table_entry(L, "wpa2gcipher", "Proprietary"); + } else { + if(wpa1) + add_table_entry(L, "wpa1gcipher", iebuf[offset+3][iw_ie_cypher_name]); + else + add_table_entry(L, "wpa2gcipher", iebuf[offset+3][iw_ie_cypher_name]); + } + offset += 4; + + if(ielen < (offset + 2)) + { + if(wpa1) + add_table_entry(L, "wpa1pcipher", "TKIP"); + else + add_table_entry(L, "wpa2pcipher", "TKIP"); + return; + } + /* Otherwise, we have some number of pairwise ciphers. */ + cnt = iebuf[offset] | (iebuf[offset + 1] << 8); + offset += 2; + if(ielen < (offset + 4*cnt)) + return; + *buf = '\0'; + for(i = 0; i < cnt; i++) + { + if(i > 0) + strncat(buf, " ", 256); + if(memcmp(&iebuf[offset], wpa_oui, 3) != 0) + { + strncat(buf, "Proprietary", 256); + } else { + if(iebuf[offset+3] <= IW_IE_CYPHER_NUM) + strncat(buf, iw_ie_cypher_name[iebuf[offset+3]], 256); + else + strncat(buf, "unknown", 256); + } + offset+=4; + } + if(wpa1) + add_table_entry(L, "wpa1pcipher", buf); + else + add_table_entry(L, "wpa2pcipher", buf); + + /* Check if we are done */ + if(ielen < (offset + 2)) + return; + + /* Now, we have authentication suites. */ + cnt = iebuf[offset] | (iebuf[offset + 1] << 8); + offset += 2; + *buf = '\0'; + if(ielen < (offset + 4*cnt)) + return; + + for(i = 0; i < cnt; i++) + { + if(i != 0) + strncat(buf, " ", 256); + if(memcmp(&iebuf[offset], wpa_oui, 3) != 0) + { + strncat(buf, "Proprietary", 256); + } else { + if(iebuf[offset+3] <= IW_IE_KEY_MGMT_NUM) + strncat(buf, iw_ie_key_mgmt_name[iebuf[offset+3]], 256); + else + strncat(buf, "unknown", 256); + } + offset+=4; + } + if(wpa1) + add_table_entry(L, "wpa1auth", buf); + else + add_table_entry(L, "wpa2auth", buf); + /* Check if we are done */ + if(ielen < (offset + 1)) + return; +} + +static inline void print_scanning_token(lua_State *L, struct stream_descr *stream, + struct iw_event *event, struct iwscan_state *state, struct iw_range *iw_range, int has_range) +{ + char buffer[128]; /* Temporary buffer */ + + /* Now, let's decode the event */ + switch(event->cmd) + { + case SIOCGIWAP: + add_table_entry(L, "addr", iw_saether_ntop(&event->u.ap_addr, buffer)); + state->ap_num++; + break; + case SIOCGIWFREQ: + { + double freq; /* Frequency/channel */ + int channel = -1; /* Converted to channel */ + freq = iw_freq2float(&(event->u.freq)); + /* Convert to channel if possible */ + if(has_range) + channel = iw_freq_to_channel(freq, iw_range); + snprintf(buffer, 128, "%1.3f", freq); + add_table_entry(L, "frequency", buffer); + snprintf(buffer, 128, "%d", channel); + add_table_entry(L, "channel", buffer); + //iw_print_freq(buffer, sizeof(buffer), freq, channel, event->u.freq.flags); + //printf(" %s\n", buffer); + } + break; + case SIOCGIWMODE: + /* Note : event->u.mode is unsigned, no need to check <= 0 */ + if(event->u.mode >= IW_NUM_OPER_MODE) + event->u.mode = IW_NUM_OPER_MODE; + add_table_entry(L, "mode", iw_operation_mode[event->u.mode]); + break; + case SIOCGIWESSID: + { + char essid[IW_ESSID_MAX_SIZE+1]; + memset(essid, '\0', sizeof(essid)); + if((event->u.essid.pointer) && (event->u.essid.length)) + memcpy(essid, event->u.essid.pointer, event->u.essid.length); + if(event->u.essid.flags) + add_table_entry(L, "essid", essid); + else + add_table_entry(L, "essid", "off/any/hidden"); + } + break; + case SIOCGIWENCODE: + { + unsigned char key[IW_ENCODING_TOKEN_MAX]; + if(event->u.data.pointer) + memcpy(key, event->u.data.pointer, event->u.data.length); + else + event->u.data.flags |= IW_ENCODE_NOKEY; + if(event->u.data.flags & IW_ENCODE_DISABLED) + { + add_table_entry(L, "key", "off"); + } else { + iw_print_key(buffer, sizeof(buffer), key, event->u.data.length, + event->u.data.flags); + add_table_entry(L, "key", buffer); + } + } + break; + case SIOCGIWRATE: + if(state->val_index == 0) + { + lua_pushstring(L, "bitrates"); + lua_newtable(L); + } + //iw_print_bitrate(buffer, sizeof(buffer), event->u.bitrate.value); + snprintf(buffer, sizeof(buffer), "%d", event->u.bitrate.value); + lua_pushinteger(L, state->val_index + 1); + lua_pushstring(L, buffer); + lua_settable(L, -3); + + /* Check for termination */ + if(stream->value == NULL) + { + lua_settable(L, -3); + state->val_index = 0; + } else + state->val_index++; + break; + case IWEVGENIE: + { + int offset = 0; + unsigned char *buffer = event->u.data.pointer; + int buflen = event->u.data.length; + while(offset <= (buflen - 2)) + { + switch(buffer[offset]) + { + case 0xdd: /* WPA1 (and other) */ + case 0x30: /* WPA2 */ + iw_print_ie_wpa(L, buffer + offset, buflen); + break; + default: + break; + } + offset += buffer[offset+1] + 2; + } + } + break; + default: + break; + } /* switch(event->cmd) */ +} + +int iwc_scan(lua_State *L) +{ + struct iwreq wrq; + struct iw_scan_req scanopt; /* Options for 'set' */ + int scanflags = 0; /* Flags for scan */ + unsigned char *buffer = NULL; /* Results */ + int buflen = IW_SCAN_MAX_DATA; /* Min for compat WE<17 */ + struct iw_range range; + int has_range; + struct timeval tv; /* Select timeout */ + int timeout = 15000000; /* 15s */ + char *ifname; + if(lua_gettop(L) != 1) + { + lua_pushstring(L, "invalid arg list"); + lua_error(L); + return 0; + } + ifname = (char *)lua_tostring (L, 1); + + /* Debugging stuff */ + if((IW_EV_LCP_PK2_LEN != IW_EV_LCP_PK_LEN) || (IW_EV_POINT_PK2_LEN != IW_EV_POINT_PK_LEN)) + { + fprintf(stderr, "*** Please report to jt@hpl.hp.com your platform details\n"); + fprintf(stderr, "*** and the following line :\n"); + fprintf(stderr, "*** IW_EV_LCP_PK2_LEN = %zu ; IW_EV_POINT_PK2_LEN = %zu\n\n", + IW_EV_LCP_PK2_LEN, IW_EV_POINT_PK2_LEN); + } + + /* Get range stuff */ + has_range = (iw_get_range_info(sock_iwconfig, ifname, &range) >= 0); + + /* Check if the interface could support scanning. */ + if((!has_range) || (range.we_version_compiled < 14)) + { + lua_pushstring(L, "interface does not support scanning"); + lua_error(L); + return 0; + } + + /* Init timeout value -> 250ms between set and first get */ + tv.tv_sec = 0; + tv.tv_usec = 250000; + + /* Clean up set args */ + memset(&scanopt, 0, sizeof(scanopt)); + + wrq.u.data.pointer = NULL; + wrq.u.data.flags = 0; + wrq.u.data.length = 0; + + /* Initiate Scanning */ + if(iw_set_ext(sock_iwconfig, ifname, SIOCSIWSCAN, &wrq) < 0) + { + if((errno != EPERM) || (scanflags != 0)) + { + lua_pushstring(L, "interface does not support scanning"); + lua_error(L); + return 0; + } + /* If we don't have the permission to initiate the scan, we may + * * still have permission to read left-over results. + * * But, don't wait !!! */ + #if 0 + /* Not cool, it display for non wireless interfaces... */ + fprintf(stderr, "%-8.16s (Could not trigger scanning, just reading left-over results)\n", ifname); + #endif + tv.tv_usec = 0; + } + timeout -= tv.tv_usec; + + /* Forever */ + while(1) + { + fd_set rfds; /* File descriptors for select */ + int last_fd; /* Last fd */ + int ret; + + /* Guess what ? We must re-generate rfds each time */ + FD_ZERO(&rfds); + last_fd = -1; + /* In here, add the rtnetlink fd in the list */ + + /* Wait until something happens */ + ret = select(last_fd + 1, &rfds, NULL, NULL, &tv); + + /* Check if there was an error */ + if(ret < 0) + { + if(errno == EAGAIN || errno == EINTR) + continue; + lua_pushstring(L, "unhandled signal"); + lua_error(L); + return 0; + } + + /* Check if there was a timeout */ + if(ret == 0) + { + unsigned char * newbuf; + +realloc: + /* (Re)allocate the buffer - realloc(NULL, len) == malloc(len) */ + newbuf = realloc(buffer, buflen); + if(newbuf == NULL) + { + if(buffer) + free(buffer); + fprintf(stderr, "%s: Allocation failed\n", __FUNCTION__); + return 0; + } + buffer = newbuf; + + /* Try to read the results */ + wrq.u.data.pointer = buffer; + wrq.u.data.flags = 0; + wrq.u.data.length = buflen; + if(iw_get_ext(sock_iwconfig, ifname, SIOCGIWSCAN, &wrq) < 0) + { + /* Check if buffer was too small (WE-17 only) */ + if((errno == E2BIG) && (range.we_version_compiled > 16)) + { + /* Some driver may return very large scan results, either + * because there are many cells, or because they have many + * large elements in cells (like IWEVCUSTOM). Most will + * only need the regular sized buffer. We now use a dynamic + * allocation of the buffer to satisfy everybody. Of course, + * as we don't know in advance the size of the array, we try + * various increasing sizes. Jean II */ + + /* Check if the driver gave us any hints. */ + if(wrq.u.data.length > buflen) + buflen = wrq.u.data.length; + else + buflen *= 2; + + /* Try again */ + goto realloc; + } + + /* Check if results not available yet */ + if(errno == EAGAIN) + { + /* Restart timer for only 100ms*/ + tv.tv_sec = 0; + tv.tv_usec = 100000; + timeout -= tv.tv_usec; + if(timeout > 0) + continue; /* Try again later */ + } + + /* Bad error */ + free(buffer); + fprintf(stderr, "%-8.16s Failed to read scan data : %s\n\n", + ifname, strerror(errno)); + return 0; + } else + /* We have the results, go to process them */ + break; + } + + /* In here, check if event and event type + * * if scan event, read results. All errors bad & no reset timeout */ + } + + if(wrq.u.data.length) + { + struct iw_event iwe; + struct stream_descr stream; + struct iwscan_state state = { .ap_num = 1, .val_index = 0 }; + int ret; + int table = 0; + iw_init_event_stream(&stream, (char *) buffer, wrq.u.data.length); + lua_newtable(L); + do + { + /* Extract an event and print it */ + ret = iw_extract_event_stream(&stream, &iwe, + range.we_version_compiled); + if(ret > 0) + { + if(iwe.cmd == SIOCGIWAP) + { + if(table) + lua_settable(L, -3); + table = 1; + lua_pushinteger(L, state.ap_num); + lua_newtable(L); + } + print_scanning_token(L, &stream, &iwe, &state, &range, has_range); + } + } while(ret > 0); + lua_settable(L, -3); + free(buffer); + return 1; + } + free(buffer); + return 0; +} |