* * Wireless Tools * * Jean II - HPLB 97->99 - HPL 99->04 * * Main code for "iwconfig". This is the generic tool for most * manipulations... * You need to link this code against "iwlib.c" and "-lm". * * This file is released under the GPL license. * Copyright (c) 1997-2004 Jean Tourrilhes <[email protected]> */ #include "iwlib.h" /* Header */ /************************* MISC SUBROUTINES **************************/ /*------------------------------------------------------------------*/ /* * Print usage string */ static void iw_usage(void) { fprintf(stderr, "Usage: iwconfig interface [essid {NN|on|off}]n"); fprintf(stderr, " [nwid {NN|on|off}]n"); fprintf(stderr, " [mode {managed|ad-hoc|...}n"); fprintf(stderr, " [freq N.NNNN[k|M|G]]n"); fprintf(stderr, " [channel N]n"); fprintf(stderr, " [ap {N|off|auto}]n"); fprintf(stderr, " [sens N]n"); fprintf(stderr, " [nick N]n"); fprintf(stderr, " [rate {N|auto|fixed}]n"); fprintf(stderr, " [rts {N|auto|fixed|off}]n"); fprintf(stderr, " [frag {N|auto|fixed|off}]n"); fprintf(stderr, " [enc {NNNN-NNNN|off}]n"); fprintf(stderr, " [power {period N|timeout N}]n"); fprintf(stderr, " [txpower N {mW|dBm}]n"); fprintf(stderr, " [commit]n"); fprintf(stderr, " Check man pages for more details.nn"); } /************************* DISPLAY ROUTINES **************************/ /*------------------------------------------------------------------*/ /* * Get wireless informations & config from the device driver * We will call all the classical wireless ioctl on the driver through * the socket to know what is supported and to get the settings... */ static int get_info(int skfd, 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(skfd, 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(skfd, SIOCGIFFLAGS, &ifr) < 0) return(-ENODEV); else return(-ENOTSUP); } /* Get ranges */ if(iw_get_range_info(skfd, ifname, &(info->range)) >= 0) info->has_range = 1; /* Get sensitivity */ if(iw_get_ext(skfd, ifname, SIOCGIWSENS, &wrq) >= 0) { info->has_sens = 1; memcpy(&(info->sens), &(wrq.u.sens), sizeof(iwparam)); } /* Get AP address */ if(iw_get_ext(skfd, ifname, SIOCGIWAP, &wrq) >= 0) { info->has_ap_addr = 1; memcpy(&(info->ap_addr), &(wrq.u.ap_addr), sizeof (sockaddr)); } /* 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(skfd, ifname, SIOCGIWNICKN, &wrq) >= 0) if(wrq.u.data.length > 1) info->has_nickname = 1; /* Get bit rate */ if(iw_get_ext(skfd, ifname, SIOCGIWRATE, &wrq) >= 0) { info->has_bitrate = 1; memcpy(&(info->bitrate), &(wrq.u.bitrate), sizeof(iwparam)); } /* Get RTS threshold */ if(iw_get_ext(skfd, ifname, SIOCGIWRTS, &wrq) >= 0) { info->has_rts = 1; memcpy(&(info->rts), &(wrq.u.rts), sizeof(iwparam)); } /* Get fragmentation threshold */ if(iw_get_ext(skfd, ifname, SIOCGIWFRAG, &wrq) >= 0) { info->has_frag = 1; memcpy(&(info->frag), &(wrq.u.frag), sizeof(iwparam)); } /* Get Power Management settings */ wrq.u.power.flags = 0; if(iw_get_ext(skfd, ifname, SIOCGIWPOWER, &wrq) >= 0) { info->has_power = 1; memcpy(&(info->power), &(wrq.u.power), sizeof(iwparam)); } if((info->has_range) && (info->range.we_version_compiled > 9)) { /* Get Transmit Power */ if(iw_get_ext(skfd, ifname, SIOCGIWTXPOW, &wrq) >= 0) { info->has_txpower = 1; memcpy(&(info->txpower), &(wrq.u.txpower), sizeof(iwparam)); } } if((info->has_range) && (info->range.we_version_compiled > 10)) { /* Get retry limit/lifetime */ if(iw_get_ext(skfd, ifname, SIOCGIWRETRY, &wrq) >= 0) { info->has_retry = 1; memcpy(&(info->retry), &(wrq.u.retry), sizeof(iwparam)); } } /* Get stats */ if(iw_get_stats(skfd, ifname, &(info->stats), &info->range, info->has_range) >= 0) { info->has_stats = 1; } return(0); } /*------------------------------------------------------------------*/ /* * Print on the screen in a neat fashion all the info we have collected * on a device. */ static void display_info(struct wireless_info * info, char * ifname) { char buffer[128]; /* Temporary buffer */ /* One token is more of less 5 characters, 14 tokens per line */ int tokens = 3; /* For name */ /* Display device name and wireless name (name of the protocol used) */ printf("%-8.16s %s ", ifname, info->b.name); /* Display ESSID (extended network), if any */ if(info->b.has_essid) { if(info->b.essid_on) { /* Does it have an ESSID index ? */ if((info->b.essid_on & IW_ENCODE_INDEX) > 1) printf("ESSID:"%s" [%d] ", info->b.essid, (info->b.essid_on & IW_ENCODE_INDEX)); else printf("ESSID:"%s" ", info->b.essid); } else printf("ESSID:off/any "); } /* Display NickName (station name), if any */ if(info->has_nickname) printf("Nickname:"%s"", info->nickname); /* Formatting */ if(info->b.has_essid || info->has_nickname) { printf("n "); tokens = 0; } /* Display Network ID */ if(info->b.has_nwid) { /* Note : should display proper number of digit according to info * in range structure */ if(info->b.nwid.disabled) printf("NWID:off/any "); else printf("NWID:%X ", info->b.nwid.value); tokens +=2; } /* Display the current mode of operation */ if(info->b.has_mode) { printf("Mode:%s ", iw_operation_mode[info->b.mode]); tokens +=3; } /* Display frequency / channel */ if(info->b.has_freq) { double freq = info->b.freq; /* Frequency/channel */ int channel = -1; /* Converted to channel */ /* Some driver insist of returning channel instead of frequency. * This fixes them up. Note that, driver should still return * frequency, because other tools depend on it. */ if(info->has_range && (freq < KILO)) channel = iw_channel_to_freq((int) freq, &freq, &info->range); /* Display */ iw_print_freq(buffer, sizeof(buffer), freq, -1, info->b.freq_flags); printf("%s ", buffer); tokens +=4; } /* Display the address of the current Access Point */ if(info->has_ap_addr) { /* A bit of clever formatting */ if(tokens > 8) { printf("n "); tokens = 0; } tokens +=6; /* Oups ! No Access Point in Ad-Hoc mode */ if((info->b.has_mode) && (info->b.mode == IW_MODE_ADHOC)) printf("Cell:"); else printf("Access Point:"); printf(" %s ", iw_pr_ether(buffer, info->ap_addr.sa_data)); } /* Display the currently used/set bit-rate */ if(info->has_bitrate) { /* A bit of clever formatting */ if(tokens > 11) { printf("n "); tokens = 0; } tokens +=3; /* Display it */ iw_print_bitrate(buffer, sizeof(buffer), info->bitrate.value); printf("Bit Rate%c%s ", (info->bitrate.fixed ? '=' : ':'), buffer); } /* Display the Transmit Power */ if(info->has_txpower) { /* A bit of clever formatting */ if(tokens > 11) { printf("n "); tokens = 0; } tokens +=3; /* Display it */ iw_print_txpower(buffer, sizeof(buffer), &info->txpower); printf("Tx-Power%c%s ", (info->txpower.fixed ? '=' : ':'), buffer); } /* Display sensitivity */ if(info->has_sens) { /* A bit of clever formatting */ if(tokens > 10) { printf("n "); tokens = 0; } tokens +=4; /* Fixed ? */ if(info->sens.fixed) printf("Sensitivity="); else printf("Sensitivity:"); if(info->has_range) /* Display in dBm ? */ if(info->sens.value < 0) printf("%d dBm ", info->sens.value); else printf("%d/%d ", info->sens.value, info->range.sensitivity); else printf("%d ", info->sens.value); } printf("n "); tokens = 0; /* Display retry limit/lifetime information */ if(info->has_retry) { printf("Retry"); /* Disabled ? */ if(info->retry.disabled) printf(":off"); else { /* Let's check the value and its type */ if(info->retry.flags & IW_RETRY_TYPE) { iw_print_retry_value(buffer, sizeof(buffer), info->retry.value, info->retry.flags); printf("%s", buffer); } /* Let's check if nothing (simply on) */ if(info->retry.flags == IW_RETRY_ON) printf(":on"); } printf(" "); tokens += 5; /* Between 3 and 5, depend on flags */ } /* Display the RTS threshold */ if(info->has_rts) { /* Disabled ? */ if(info->rts.disabled) printf("RTS thr:off "); else { /* Fixed ? */ if(info->rts.fixed) printf("RTS thr="); else printf("RTS thr:"); printf("%d B ", info->rts.value); } tokens += 3; } /* Display the fragmentation threshold */ if(info->has_frag) { /* A bit of clever formatting */ if(tokens > 10) { printf("n "); tokens = 0; } tokens +=4; /* Disabled ? */ if(info->frag.disabled) printf("Fragment thr:off"); else { /* Fixed ? */ if(info->frag.fixed) printf("Fragment thr="); else printf("Fragment thr:"); printf("%d B ", info->frag.value); } } /* Formating */ if(tokens > 0) printf("n "); /* Display encryption information */ /* Note : we display only the "current" key, use iwlist to list all keys */ if(info->b.has_key) { printf("Encryption key:"); if((info->b.key_flags & IW_ENCODE_DISABLED) || (info->b.key_size == 0)) printf("offn "); else { /* Display the key */ iw_print_key(buffer, sizeof(buffer), info->b.key, info->b.key_size, info->b.key_flags); printf("%s", buffer); /* Other info... */ if((info->b.key_flags & IW_ENCODE_INDEX) > 1) printf(" [%d]", info->b.key_flags & IW_ENCODE_INDEX); if(info->b.key_flags & IW_ENCODE_RESTRICTED) printf(" Security mode:restricted"); if(info->b.key_flags & IW_ENCODE_OPEN) printf(" Security mode:open"); printf("n "); } } /* Display Power Management information */ /* Note : we display only one parameter, period or timeout. If a device * (such as HiperLan) has both, the user need to use iwlist... */ if(info->has_power) /* I hope the device has power ;-) */ { printf("Power Management"); /* Disabled ? */ if(info->power.disabled) printf(":offn "); else { /* Let's check the value and its type */ if(info->power.flags & IW_POWER_TYPE) { iw_print_pm_value(buffer, sizeof(buffer), info->power.value, info->power.flags); printf("%s ", buffer); } /* Let's check the mode */ iw_print_pm_mode(buffer, sizeof(buffer), info->power.flags); printf("%s", buffer); /* Let's check if nothing (simply on) */ if(info->power.flags == IW_POWER_ON) printf(":on"); printf("n "); } } /* Display statistics */ if(info->has_stats) { iw_print_stats(buffer, sizeof(buffer), &info->stats.qual, &info->range, info->has_range); printf("Link %sn", buffer); if(info->range.we_version_compiled > 11) printf(" Rx invalid nwid:%d Rx invalid crypt:%d Rx invalid frag:%dn Tx excessive retries:%d Invalid misc:%d Missed beacon:%dn", info->stats.discard.nwid, info->stats.discard.code, info->stats.discard.fragment, info->stats.discard.retries, info->stats.discard.misc, info->stats.miss.beacon); else printf(" Rx invalid nwid:%d invalid crypt:%d invalid misc:%dn", info->stats.discard.nwid, info->stats.discard.code, info->stats.discard.misc); } printf("n"); } /*------------------------------------------------------------------*/ /* * Print on the screen in a neat fashion all the info we have collected * on a device. */ static int print_info(int skfd, char * ifname, char * args[], int count) { struct wireless_info info; int rc; /* Avoid "Unused parameter" warning */ args = args; count = count; rc = get_info(skfd, ifname, &info); switch(rc) { case 0: /* Success */ /* Display it ! */ display_info(&info, ifname); break; case -ENOTSUP: fprintf(stderr, "%-8.16s no wireless extensions.nn", ifname); break; default: fprintf(stderr, "%-8.16s %snn", ifname, strerror(-rc)); } return(rc); } /************************* SETTING ROUTINES **************************/ /*------------------------------------------------------------------*/ /* * 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(-1); } while(0) #define ABORT_ARG_TYPE(rname, request, arg) do { ERR_SET_EXT(rname, request); fprintf(stderr, " invalid argument "%s".n", arg); return(-2); } 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(-3); } 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(-5); } } 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(-6); } } while(0) /*------------------------------------------------------------------*/ /* * Set the wireless options requested on command line * This function is too long and probably should be split, * because it look like the perfect definition of spaghetti code, * but I'm way to lazy */ static int set_info(int skfd, /* The socket */ char * args[], /* Command line args */ int count, /* Args count */ char * ifname) /* Dev name */ { struct iwreq wrq; int i; /* if nothing after the device name - will never happen */ if(count < 1) { fprintf(stderr, "Error : too few arguments.n"); return(-1); } /* The other args on the line specify options to be set... */ for(i = 0; i < count; i++) { /* ---------- Commit changes to driver ---------- */ if(!strncmp(args[i], "commit", 6)) { /* No args */ IW_SET_EXT_ERR(skfd, ifname, SIOCSIWCOMMIT, &wrq, "Commit changes"); continue; } /* ---------- Set network ID ---------- */ if((!strcasecmp(args[i], "nwid")) || (!strcasecmp(args[i], "domain"))) { i++; if(i >= count) ABORT_ARG_NUM("Set NWID", SIOCSIWNWID); if((!strcasecmp(args[i], "off")) || (!strcasecmp(args[i], "any"))) wrq.u.nwid.disabled = 1; else if(!strcasecmp(args[i], "on")) { /* Get old nwid */ IW_GET_EXT_ERR(skfd, ifname, SIOCGIWNWID, &wrq, "Set NWID"); wrq.u.nwid.disabled = 0; } else if(sscanf(args[i], "%lX", (unsigned long *) &(wrq.u.nwid.value)) != 1) ABORT_ARG_TYPE("Set NWID", SIOCSIWNWID, args[i]); else wrq.u.nwid.disabled = 0; wrq.u.nwid.fixed = 1; /* Set new nwid */ IW_SET_EXT_ERR(skfd, ifname, SIOCSIWNWID, &wrq, "Set NWID"); continue; } /* ---------- Set frequency / channel ---------- */ if((!strncmp(args[i], "freq", 4)) || (!strcmp(args[i], "channel"))) { double freq; if(++i >= count) ABORT_ARG_NUM("Set Frequency", SIOCSIWFREQ); if(!strcasecmp(args[i], "auto")) { wrq.u.freq.m = -1; wrq.u.freq.e = 0; wrq.u.freq.flags = 0; } else { if(!strcasecmp(args[i], "fixed")) { /* Get old bitrate */ IW_GET_EXT_ERR(skfd, ifname, SIOCGIWFREQ, &wrq, "Set Bit Rate"); wrq.u.freq.flags = IW_FREQ_FIXED; } else /* Should be a numeric value */ { if(sscanf(args[i], "%lg", &(freq)) != 1) ABORT_ARG_TYPE("Set Frequency", SIOCSIWFREQ, args[i]); if(index(args[i], 'G')) freq *= GIGA; if(index(args[i], 'M')) freq *= MEGA; if(index(args[i], 'k')) freq *= KILO; iw_float2freq(freq, &(wrq.u.freq)); wrq.u.freq.flags = IW_FREQ_FIXED; /* Check for an additional argument */ if(((i+1) < count) && (!strcasecmp(args[i+1], "auto"))) { wrq.u.freq.flags = 0; ++i; } if(((i+1) < count) && (!strcasecmp(args[i+1], "fixed"))) { wrq.u.freq.flags = IW_FREQ_FIXED; ++i; } } } IW_SET_EXT_ERR(skfd, ifname, SIOCSIWFREQ, &wrq, "Set Frequency"); continue; } /* ---------- Set sensitivity ---------- */ if(!strncmp(args[i], "sens", 4)) { if(++i >= count) ABORT_ARG_NUM("Set Sensitivity", SIOCSIWSENS); if(sscanf(args[i], "%i", &(wrq.u.sens.value)) != 1) ABORT_ARG_TYPE("Set Sensitivity", SIOCSIWSENS, args[i]); IW_SET_EXT_ERR(skfd, ifname, SIOCSIWSENS, &wrq, "Set Sensitivity"); continue; } /* ---------- Set encryption stuff ---------- */ if((!strncmp(args[i], "enc", 3)) || (!strcmp(args[i], "key"))) { unsigned char key[IW_ENCODING_TOKEN_MAX]; if(++i >= count) ABORT_ARG_NUM("Set Encode", SIOCSIWENCODE); if(!strcasecmp(args[i], "on")) { /* Get old encryption information */ wrq.u.data.pointer = (caddr_t) key; wrq.u.data.length = IW_ENCODING_TOKEN_MAX; wrq.u.data.flags = 0; IW_GET_EXT_ERR(skfd, ifname, SIOCGIWENCODE, &wrq, "Set Encode"); wrq.u.data.flags &= ~IW_ENCODE_DISABLED; /* Enable */ } else { int gotone = 0; int oldone; int keylen; int temp; wrq.u.data.pointer = (caddr_t) NULL; wrq.u.data.flags = 0; wrq.u.data.length = 0; /* Allow arguments in any order (it's safe) */ do { oldone = gotone; /* -- Check for the key -- */ if(i < count) { keylen = iw_in_key_full(skfd, ifname, args[i], key, &wrq.u.data.flags); if(keylen > 0) { wrq.u.data.length = keylen; wrq.u.data.pointer = (caddr_t) key; ++i; gotone++; } } /* -- Check for token index -- */ if((i < count) && (sscanf(args[i], "[%i]", &temp) == 1) && (temp > 0) && (temp < IW_ENCODE_INDEX)) { wrq.u.encoding.flags |= temp; ++i; gotone++; } /* -- Check the various flags -- */ if((i < count) && (!strcasecmp(args[i], "off"))) { wrq.u.data.flags |= IW_ENCODE_DISABLED; ++i; gotone++; } if((i < count) && (!strcasecmp(args[i], "open"))) { wrq.u.data.flags |= IW_ENCODE_OPEN; ++i; gotone++; } if((i < count) && (!strncasecmp(args[i], "restricted", 5))) { wrq.u.data.flags |= IW_ENCODE_RESTRICTED; ++i; gotone++; } if((i < count) && (!strncasecmp(args[i], "temporary", 4))) { wrq.u.data.flags |= IW_ENCODE_TEMP; ++i; gotone++; } } while(gotone != oldone); /* Pointer is absent in new API */ if(wrq.u.data.pointer == NULL) wrq.u.data.flags |= IW_ENCODE_NOKEY; /* Check if we have any invalid argument */ if(!gotone) ABORT_ARG_TYPE("Set Encode", SIOCSIWENCODE, args[i]); /* Get back to last processed argument */ --i; } IW_SET_EXT_ERR(skfd, ifname, SIOCSIWENCODE, &wrq, "Set Encode"); continue; } /* ---------- Set ESSID ---------- */ if(!strcasecmp(args[i], "essid")) { char essid[IW_ESSID_MAX_SIZE + 1]; i++; if(i >= count) ABORT_ARG_NUM("Set ESSID", SIOCSIWESSID); if((!strcasecmp(args[i], "off")) || (!strcasecmp(args[i], "any"))) { wrq.u.essid.flags = 0; essid[0] = ''; } else if(!strcasecmp(args[i], "on")) { /* Get old essid */ wrq.u.essid.pointer = (caddr_t) essid; wrq.u.essid.length = IW_ESSID_MAX_SIZE + 1; wrq.u.essid.flags = 0; IW_GET_EXT_ERR(skfd, ifname, SIOCGIWESSID, &wrq, "Set ESSID"); wrq.u.essid.flags = 1; } else { /* '-' allow to escape the ESSID string, allowing * to set it to the string "any" or "off". * This is a big ugly, but it will do for now */ if(!strcmp(args[i], "-")) { i++; if(i >= count) ABORT_ARG_NUM("Set ESSID", SIOCSIWESSID); } /* Check the size of what the user passed us to avoid * buffer overflows */ if(strlen(args[i]) > IW_ESSID_MAX_SIZE) ABORT_ARG_SIZE("Set ESSID", SIOCSIWESSID, IW_ESSID_MAX_SIZE); else { int temp; wrq.u.essid.flags = 1; strcpy(essid, args[i]); /* Size checked, all clear */ /* Check for ESSID index */ if(((i+1) < count) && (sscanf(args[i+1], "[%i]", &temp) == 1) && (temp > 0) && (temp < IW_ENCODE_INDEX)) { wrq.u.essid.flags = temp; ++i; } } } wrq.u.essid.pointer = (caddr_t) essid; wrq.u.essid.length = strlen(essid) + 1; IW_SET_EXT_ERR(skfd, ifname, SIOCSIWESSID, &wrq, "Set ESSID"); continue; } /* ---------- Set AP address ---------- */ if(!strcasecmp(args[i], "ap")) { if(++i >= count) ABORT_ARG_NUM("Set AP Address", SIOCSIWAP); if((!strcasecmp(args[i], "auto")) || (!strcasecmp(args[i], "any"))) { /* Send a broadcast address */ iw_broad_ether(&(wrq.u.ap_addr)); } else { if(!strcasecmp(args[i], "off")) { /* Send a NULL address */ iw_null_ether(&(wrq.u.ap_addr)); } else { /* Get the address and check if the interface supports it */ if(iw_in_addr(skfd, ifname, args[i++], &(wrq.u.ap_addr)) < 0) ABORT_ARG_TYPE("Set AP Address", SIOCSIWAP, args[i-1]); } } IW_SET_EXT_ERR(skfd, ifname, SIOCSIWAP, &wrq, "Set AP Address"); continue; } /* ---------- Set NickName ---------- */ if(!strncmp(args[i], "nick", 4)) { i++; if(i >= count) ABORT_ARG_NUM("Set Nickname", SIOCSIWNICKN); if(strlen(args[i]) > IW_ESSID_MAX_SIZE) ABORT_ARG_SIZE("Set Nickname", SIOCSIWNICKN, IW_ESSID_MAX_SIZE); wrq.u.essid.pointer = (caddr_t) args[i]; wrq.u.essid.length = strlen(args[i]) + 1; IW_SET_EXT_ERR(skfd, ifname, SIOCSIWNICKN, &wrq, "Set Nickname"); continue; } /* ---------- Set Bit-Rate ---------- */ if((!strncmp(args[i], "bit", 3)) || (!strcmp(args[i], "rate"))) { if(++i >= count) ABORT_ARG_NUM("Set Bit Rate", SIOCSIWRATE); if(!strcasecmp(args[i], "auto")) { wrq.u.bitrate.value = -1; wrq.u.bitrate.fixed = 0; } else { if(!strcasecmp(args[i], "fixed")) { /* Get old bitrate */ IW_GET_EXT_ERR(skfd, ifname, SIOCGIWRATE, &wrq, "Set Bit Rate"); wrq.u.bitrate.fixed = 1; } else /* Should be a numeric value */ { double brate; if(sscanf(args[i], "%lg", &(brate)) != 1) ABORT_ARG_TYPE("Set Bit Rate", SIOCSIWRATE, args[i]); if(index(args[i], 'G')) brate *= GIGA; if(index(args[i], 'M')) brate *= MEGA; if(index(args[i], 'k')) brate *= KILO; wrq.u.bitrate.value = (long) brate; wrq.u.bitrate.fixed = 1; /* Check for an additional argument */ if(((i+1) < count) && (!strcasecmp(args[i+1], "auto"))) { wrq.u.bitrate.fixed = 0; ++i; } if(((i+1) < count) && (!strcasecmp(args[i+1], "fixed"))) { wrq.u.bitrate.fixed = 1; ++i; } } } IW_SET_EXT_ERR(skfd, ifname, SIOCSIWRATE, &wrq, "Set Bit Rate"); continue; } /* ---------- Set RTS threshold ---------- */ if(!strncasecmp(args[i], "rts", 3)) { i++; if(i >= count) ABORT_ARG_NUM("Set RTS Threshold", SIOCSIWRTS); wrq.u.rts.value = -1; wrq.u.rts.fixed = 1; wrq.u.rts.disabled = 0; if(!strcasecmp(args[i], "off")) wrq.u.rts.disabled = 1; /* i.e. max size */ else if(!strcasecmp(args[i], "auto")) wrq.u.rts.fixed = 0; else { if(!strcasecmp(args[i], "fixed")) { /* Get old RTS threshold */ IW_GET_EXT_ERR(skfd, ifname, SIOCGIWRTS, &wrq, "Set RTS Threshold"); wrq.u.rts.fixed = 1; } else /* Should be a numeric value */ if(sscanf(args[i], "%li", (unsigned long *) &(wrq.u.rts.value)) != 1) ABORT_ARG_TYPE("Set RTS Threshold", SIOCSIWRTS, args[i]); } IW_SET_EXT_ERR(skfd, ifname, SIOCSIWRTS, &wrq, "Set RTS Threshold"); continue; } /* ---------- Set fragmentation threshold ---------- */ if(!strncmp(args[i], "frag", 4)) { i++; if(i >= count) ABORT_ARG_NUM("Set Fragmentation Threshold", SIOCSIWFRAG); wrq.u.frag.value = -1; wrq.u.frag.fixed = 1; wrq.u.frag.disabled = 0; if(!strcasecmp(args[i], "off")) wrq.u.frag.disabled = 1; /* i.e. max size */ else if(!strcasecmp(args[i], "auto")) wrq.u.frag.fixed = 0; else { if(!strcasecmp(args[i], "fixed")) { /* Get old fragmentation threshold */ IW_GET_EXT_ERR(skfd, ifname, SIOCGIWFRAG, &wrq, "Set Fragmentation Threshold"); wrq.u.frag.fixed = 1; } else /* Should be a numeric value */ if(sscanf(args[i], "%li", (unsigned long *) &(wrq.u.frag.value)) != 1) ABORT_ARG_TYPE("Set Fragmentation Threshold", SIOCSIWFRAG, args[i]); } IW_SET_EXT_ERR(skfd, ifname, SIOCSIWFRAG, &wrq, "Set Fragmentation Threshold"); continue; } /* ---------- Set operation mode ---------- */ if(!strcmp(args[i], "mode")) { int k; i++; if(i >= count) ABORT_ARG_NUM("Set Mode", SIOCSIWMODE); if(sscanf(args[i], "%i", &k) != 1) { k = 0; while((k < IW_NUM_OPER_MODE) && strncasecmp(args[i], iw_operation_mode[k], 3)) k++; } if((k >= IW_NUM_OPER_MODE) || (k < 0)) ABORT_ARG_TYPE("Set Mode", SIOCSIWMODE, args[i]); wrq.u.mode = k; IW_SET_EXT_ERR(skfd, ifname, SIOCSIWMODE, &wrq, "Set Mode"); continue; } /* ---------- Set Power Management ---------- */ if(!strncmp(args[i], "power", 3)) { if(++i >= count) ABORT_ARG_NUM("Set Power Management", SIOCSIWPOWER); if(!strcasecmp(args[i], "off")) wrq.u.power.disabled = 1; /* i.e. max size */ else if(!strcasecmp(args[i], "on")) { /* Get old Power info */ IW_GET_EXT_ERR(skfd, ifname, SIOCGIWPOWER, &wrq, "Set Power Management"); wrq.u.power.disabled = 0; } else { double temp; int gotone = 0; /* Default - nope */ wrq.u.power.flags = IW_POWER_ON; wrq.u.power.disabled = 0; /* Check value modifier */ if(!strcasecmp(args[i], "min")) { wrq.u.power.flags |= IW_POWER_MIN; if(++i >= count) ABORT_ARG_NUM("Set Power Management", SIOCSIWPOWER); } else if(!strcasecmp(args[i], "max")) { wrq.u.power.flags |= IW_POWER_MAX; if(++i >= count) ABORT_ARG_NUM("Set Power Management", SIOCSIWPOWER); } /* Check value type */ if(!strcasecmp(args[i], "period")) { wrq.u.power.flags |= IW_POWER_PERIOD; if(++i >= count) ABORT_ARG_NUM("Set Power Management", SIOCSIWPOWER); } else if(!strcasecmp(args[i], "timeout")) { wrq.u.power.flags |= IW_POWER_TIMEOUT; if(++i >= count) ABORT_ARG_NUM("Set Power Management", SIOCSIWPOWER); } /* Is there any value to grab ? */ if(sscanf(args[i], "%lg", &(temp)) == 1) { temp *= MEGA; /* default = s */ if(index(args[i], 'u')) temp /= MEGA; if(index(args[i], 'm')) temp /= KILO; wrq.u.power.value = (long) temp; if((wrq.u.power.flags & IW_POWER_TYPE) == 0) wrq.u.power.flags |= IW_POWER_PERIOD; ++i; gotone = 1; } /* Now, check the mode */ if(i < count) { if(!strcasecmp(args[i], "all")) wrq.u.power.flags |= IW_POWER_ALL_R; if(!strncasecmp(args[i], "unicast", 4)) wrq.u.power.flags |= IW_POWER_UNICAST_R; if(!strncasecmp(args[i], "multicast", 5)) wrq.u.power.flags |= IW_POWER_MULTICAST_R; if(!strncasecmp(args[i], "force", 5)) wrq.u.power.flags |= IW_POWER_FORCE_S; if(!strcasecmp(args[i], "repeat")) wrq.u.power.flags |= IW_POWER_REPEATER; if(wrq.u.power.flags & IW_POWER_MODE) { ++i; gotone = 1; } } if(!gotone) ABORT_ARG_TYPE("Set Power Management", SIOCSIWPOWER, args[i]); --i; } IW_SET_EXT_ERR(skfd, ifname, SIOCSIWPOWER, &wrq, "Set Power Management"); continue; } /* ---------- Set Transmit-Power ---------- */ if(!strncmp(args[i], "txpower", 3)) { struct iw_range range; if(++i >= count) ABORT_ARG_NUM("Set Tx Power", SIOCSIWTXPOW); /* Extract range info */ if(iw_get_range_info(skfd, ifname, &range) < 0) memset(&range, 0, sizeof(range)); /* Prepare the request */ wrq.u.txpower.value = -1; wrq.u.txpower.fixed = 1; wrq.u.txpower.disabled = 0; wrq.u.txpower.flags = IW_TXPOW_DBM; if(!strcasecmp(args[i], "off")) wrq.u.txpower.disabled = 1; /* i.e. turn radio off */ else if(!strcasecmp(args[i], "auto")) wrq.u.txpower.fixed = 0; /* i.e. use power control */ else { if(!strcasecmp(args[i], "on")) { /* Get old tx-power */ IW_GET_EXT_ERR(skfd, ifname, SIOCGIWTXPOW, &wrq, "Set Tx Power"); wrq.u.txpower.disabled = 0; } else { if(!strcasecmp(args[i], "fixed")) { /* Get old tx-power */ IW_GET_EXT_ERR(skfd, ifname, SIOCGIWTXPOW, &wrq, "Set Tx Power"); wrq.u.txpower.fixed = 1; wrq.u.txpower.disabled = 0; } else /* Should be a numeric value */ { int power; int ismwatt = 0; /* Get the value */ if(sscanf(args[i], "%i", &(power)) != 1) ABORT_ARG_TYPE("Set Tx Power", SIOCSIWTXPOW, args[i]); /* Check if milliwatt */ ismwatt = (index(args[i], 'm') != NULL); /* Convert */ if(range.txpower_capa & IW_TXPOW_RELATIVE) { /* Can't convert */ if(ismwatt) ABORT_ARG_TYPE("Set Tx Power", SIOCSIWTXPOW, args[i]); } else if(range.txpower_capa & IW_TXPOW_MWATT) { if(!ismwatt) power = iw_dbm2mwatt(power); wrq.u.txpower.flags = IW_TXPOW_MWATT; } else { if(ismwatt) power = iw_mwatt2dbm(power); wrq.u.txpower.flags = IW_TXPOW_DBM; } wrq.u.txpower.value = power; /* Check for an additional argument */ if(((i+1) < count) && (!strcasecmp(args[i+1], "auto"))) { wrq.u.txpower.fixed = 0; ++i; } if(((i+1) < count) && (!strcasecmp(args[i+1], "fixed"))) { wrq.u.txpower.fixed = 1; ++i; } } } } IW_SET_EXT_ERR(skfd, ifname, SIOCSIWTXPOW, &wrq, "Set Tx Power"); continue; } /* ---------- Set Retry limit ---------- */ if(!strncmp(args[i], "retry", 3)) { double temp; int gotone = 0; if(++i >= count) ABORT_ARG_NUM("Set Retry Limit", SIOCSIWRETRY); /* Default - nope */ wrq.u.retry.flags = IW_RETRY_LIMIT; wrq.u.retry.disabled = 0; /* Check value modifier */ if(!strcasecmp(args[i], "min")) { wrq.u.retry.flags |= IW_RETRY_MIN; if(++i >= count) ABORT_ARG_NUM("Set Retry Limit", SIOCSIWRETRY); } else if(!strcasecmp(args[i], "max")) { wrq.u.retry.flags |= IW_RETRY_MAX; if(++i >= count) ABORT_ARG_NUM("Set Retry Limit", SIOCSIWRETRY); } /* Check value type */ if(!strcasecmp(args[i], "limit")) { wrq.u.retry.flags |= IW_RETRY_LIMIT; if(++i >= count) ABORT_ARG_NUM("Set Retry Limit", SIOCSIWRETRY); } else if(!strncasecmp(args[i], "lifetime", 4)) { wrq.u.retry.flags &= ~IW_RETRY_LIMIT; wrq.u.retry.flags |= IW_RETRY_LIFETIME; if(++i >= count) ABORT_ARG_NUM("Set Retry Limit", SIOCSIWRETRY); } /* Is there any value to grab ? */ if(sscanf(args[i], "%lg", &(temp)) == 1) { /* Limit is absolute, on the other hand lifetime is seconds */ if(!(wrq.u.retry.flags & IW_RETRY_LIMIT)) { /* Normalise lifetime */ temp *= MEGA; /* default = s */ if(index(args[i], 'u')) temp /= MEGA; if(index(args[i], 'm')) temp /= KILO; } wrq.u.retry.value = (long) temp; ++i; gotone = 1; } if(!gotone) ABORT_ARG_TYPE("Set Retry Limit", SIOCSIWRETRY, args[i]); --i; IW_SET_EXT_ERR(skfd, ifname, SIOCSIWRETRY, &wrq, "Set Retry Limit"); continue; } /* ---------- Other ---------- */ /* Here we have an unrecognised arg... */ fprintf(stderr, "Error : unrecognised wireless request "%s"n", args[i]); return(-1); } /* for(index ... */ return(0); } /******************************* MAIN ********************************/ /*------------------------------------------------------------------*/ /* * The main ! */ int main(int argc, char ** argv) { int skfd; /* generic raw socket desc. */ int goterr = 0; /* Create a channel to the NET kernel. */ if((skfd = iw_sockets_open()) < 0) { perror("socket"); exit(-1); } /* No argument : show the list of all device + info */ if(argc == 1) iw_enum_devices(skfd, &print_info, NULL, 0); else /* Special case for help... */ if((!strcmp(argv[1], "-h")) || (!strcmp(argv[1], "--help"))) iw_usage(); else /* Special case for version... */ if (!strcmp(argv[1], "-v") || !strcmp(argv[1], "--version")) goterr = iw_print_version_info("iwconfig"); else /* The device name must be the first argument */ if(argc == 2) print_info(skfd, argv[1], NULL, 0); else /* The other args on the line specify options to be set... */ goterr = set_info(skfd, argv + 2, argc - 2, argv[1]); /* Close the socket. */ iw_sockets_close(skfd); return(goterr); }