/*
* Wireless Tools
*
* Jean II - HPLB 97->99 - HPL 99->07
*
* 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) 1997-2007 Jean Tourrilhes <jt@hpl.hp.com>
*/
#include "iwlib-private.h" /* Private header */
/**************************** CONSTANTS ****************************/
/*
* Error codes defined for setting args
*/
#define IWERR_ARG_NUM -2
#define IWERR_ARG_TYPE -3
#define IWERR_ARG_SIZE -4
#define IWERR_ARG_CONFLICT -5
#define IWERR_SET_EXT -6
#define IWERR_GET_EXT -7
/**************************** VARIABLES ****************************/
/*
* Ugly, but deal with errors in set_info() efficiently...
*/
static int errarg;
static int errmax;
/************************* 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 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 bit rate */
if(iw_get_ext(skfd, 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(skfd, ifname, SIOCGIWPOWER, &wrq) >= 0)
{
info->has_power = 1;
memcpy(&(info->power), &(wrq.u.power), sizeof(iwparam));
}
/* Get stats */
if(iw_get_stats(skfd, ifname, &(info->stats),
&info->range, info->has_range) >= 0)
{
info->has_stats = 1;
}
#ifndef WE_ESSENTIAL
/* Get NickName */
wrq.u.essid.pointer = (caddr_t) info->nickname;
wrq.u.essid.length = IW_ESSID_MAX_SIZE + 2;
wrq.u.essid.flags = 0;
if(iw_get_ext(skfd, 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(skfd, ifname, SIOCGIWTXPOW, &wrq) >= 0)
{
info->has_txpower = 1;
memcpy(&(info->txpower), &(wrq.u.txpower), sizeof(iwparam));
}
}
/* Get sensitivity */
if(iw_get_ext(skfd, 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(skfd, ifname, SIOCGIWRETRY, &wrq) >= 0)
{
info->has_retry = 1;
memcpy(&(info->retry), &(wrq.u.retry), 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));
}
#endif /* WE_ESSENTIAL */
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[256]; /* 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)
{
/* Escape the non-printable characters */
iw_essid_escape(buffer, info->b.essid, info->b.essid_len);
/* Does it have an ESSID index ? */
if((info->b.essid_on & IW_ENCODE_INDEX) > 1)
printf("ESSID:\"%s\" [%d] ", buffer,
(info->b.essid_on & IW_ENCODE_INDEX));
else
printf("ESSID:\"%s\" ", buffer);
}
else
printf("ESSID:off/any ");
}
#ifndef WE_ESSENTIAL
/* Display NickName (station name), if any */
if(info->has_nickname)
printf("Nickname:\"%s\"", info->nickname);
#endif /* WE_ESSENTIAL */
/* Formatting */
if(info->b.has_essid || info->has_nickname)
{
printf("\n ");
tokens = 0;
}
#ifndef WE_ESSENTIAL
/* Display Network ID */
if(info->b.has_nwid)
{
/* Note : should display proper number of digits 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;
}
#endif /* WE_ESSENTIAL */
/* 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 drivers 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_sawap_ntop(&info->ap_addr, buffer));
}
/* 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);
}
#ifndef WE_ESSENTIAL
/* 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 ? */
printf("Sensitivity%c", info->sens.fixed ? '=' : ':');
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);
}
#endif /* WE_ESSENTIAL */
printf("\n ");
tokens = 0;
#ifndef WE_ESSENTIAL
/* 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,
info->range.we_version_compiled);
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 ? */
printf("RTS thr%c%d B ",
info->rts.fixed ? '=' : ':',
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 ? */
printf("Fragment thr%c%d B ",
info->frag.fixed ? '=' : ':',
info->frag.value);
}
}
/* Formating */
if(tokens > 0)
printf("\n ");
#endif /* WE_ESSENTIAL */
/* 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("off");
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(":off");
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,
info->range.we_version_compiled);
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 %s\n", buffer);
if(info->range.we_version_compiled > 11)
printf(" Rx invalid nwid:%d Rx invalid crypt:%d Rx invalid frag:%d\n Tx excessive retries:%d Invalid misc:%d Missed beacon:%d\n",
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:%d\n",
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.\n\n",
ifname);
break;
default:
fprintf(stderr, "%-8.16s %s\n\n", ifname, strerror(-rc));
}
return(rc);
}
/****************** COMMAND LINE MODIFIERS PARSING ******************/
/*
* Factor out the parsing of command line modifiers.
*/
/*------------------------------------------------------------------*/
/*
* Map command line modifiers to the proper flags...
*/
typedef struct iwconfig_modifier {
const char * cmd; /* Command line shorthand */
__u16 flag; /* Flags to add */
__u16 exclude; /* Modifiers to exclude */
} iwconfig_modifier;
/*------------------------------------------------------------------*/
/*
* Modifiers for Power
*/
static const struct iwconfig_modifier iwmod_power[] = {
{ "min", IW_POWER_MIN, IW_POWER_MAX },
{ "max", IW_POWER_MAX, IW_POWER_MIN },
{ "period", IW_POWER_PERIOD, IW_POWER_TIMEOUT | IW_POWER_SAVING },
{ "timeout", IW_POWER_TIMEOUT, IW_POWER_PERIOD | IW_POWER_SAVING },
{ "saving", IW_POWER_SAVING, IW_POWER_TIMEOUT | IW_POWER_PERIOD },
};
#define IWMOD_POWER_NUM (sizeof(iwmod_power)/sizeof(iwmod_power[0]))
/*------------------------------------------------------------------*/
/*
* Modifiers for Retry
*/
#ifndef WE_ESSENTIAL
static const struct iwconfig_modifier iwmod_retry[] = {
{ "min", IW_RETRY_MIN, IW_RETRY_MAX },
{ "max", IW_RETRY_MAX, IW_RETRY_MIN },
{ "short", IW_RETRY_SHORT, IW_RETRY_LONG },
{ "long", IW_RETRY_LONG, IW_RETRY_SHORT },
{ "limit", IW_RETRY_LIMIT, IW_RETRY_LIFETIME },
{ "lifetime", IW_RETRY_LIFETIME, IW_RETRY_LIMIT },
};
#define IWMOD_RETRY_NUM (sizeof(iwmod_retry)/sizeof(iwmod_retry[0]))
#endif /* WE_ESSENTIAL */
/*------------------------------------------------------------------*/
/*
* Parse command line modifiers.
* Return error or number arg parsed.
* Modifiers must be at the beggining of command line.
*/
static int
parse_modifiers(char * args[], /* Command line args */
int count, /* Args count */
__u16 * pout, /* Flags to write */
const struct iwconfig_modifier modifier[],
int modnum)
{
int i = 0;
int k = 0;
__u16 result = 0; /* Default : no flag set */
/* Get all modifiers and value types on the command line */
do
{
for(k = 0; k < modnum; k++)
{
/* Check if matches */
if(!strcasecmp(args[i], modifier[k].cmd))
{
/* Check for conflicting flags */
if(result & modifier[k].exclude)
{
errarg = i;
return(IWERR_ARG_CONFLICT);
}
/* Just add it */
result |= modifier[k].flag;
++i;
break;
}
}
}
/* For as long as current arg matched and not out of args */
while((i < count) && (k < modnum));
/* Check there remains one arg for value */
if(i >= count)
return(IWERR_ARG_NUM);
/* Return result */
*pout = result;
return(i);
}
/*********************** SETTING SUB-ROUTINES ***********************/
/*
* The following functions are use to set some wireless parameters and
* are called by the set dispatcher set_info().
* They take as arguments the remaining of the command line, with
* arguments processed already removed.
* An error is indicated by a negative return value.
* 0 and positive return values indicate the number of args consumed.
*/
/*------------------------------------------------------------------*/
/*
* Set ESSID
*/
static int
set_essid_info(int skfd,
char * ifname,
char * args[], /* Command line args */
int count) /* Args count */
{
struct iwreq wrq;
int i = 1;
char essid[4*IW_ESSID_MAX_SIZE + 1];
int essid_len;
int essid_index;
int we_kernel_version;
if((!strcasecmp(args[0], "off")) ||
(!strcasecmp(args[0], "any")))
{
wrq.u.essid.flags = 0;
essid[0] = '\0';
essid_len = 0;
}
else
if(!strcasecmp(args[0], "on"))
{
/* Get old essid */
memset(essid, '\0', sizeof(essid));
wrq.u.essid.pointer = (caddr_t) essid;
wrq.u.essid.length = IW_ESSID_MAX_SIZE + 2;
wrq.u.essid.flags = 0;
if(iw_get_ext(skfd, ifname, SIOCGIWESSID, &wrq) < 0)
return(IWERR_GET_EXT);
wrq.u.essid.flags = 1;
essid_len = wrq.u.essid.length;
}
else
{
i = 0;
/* '-' or '--' 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[0], "-")) || (!strcmp(args[0], "--")))
{
if(++i >= count)
return(IWERR_ARG_NUM);
essid_len = strlen(args[i]);
}
/* First size check : check if ot fits in our internal buffer.
* We do a two pass size check because of unescaping */
if(strlen(args[i]) > (4*IW_ESSID_MAX_SIZE))
{
errmax = IW_ESSID_MAX_SIZE;
return(IWERR_ARG_SIZE);
}
/* Unescape the ESSID to allow the user to enter weird chars */
essid_len = iw_essid_unescape(essid, args[i]);
/* Check the size to see if it fits the API. */
if(essid_len > IW_ESSID_MAX_SIZE)
{
errmax = IW_ESSID_MAX_SIZE;
return(IWERR_ARG_SIZE);
}
wrq.u.essid.flags = 1;
i++;
/* Check for ESSID index */
if((i < count) &&
(sscanf(args[i], "[%i]", &essid_index) == 1) &&
(essid_index > 0) && (essid_index < IW_ENCODE_INDEX))
{
wrq.u.essid.flags = essid_index;
++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 = essid_len;
if(we_kernel_version < 21)
wrq.u.essid.length++;
if(iw_set_ext(skfd, ifname, SIOCSIWESSID, &wrq) < 0)
return(IWERR_SET_EXT);
/* Var args */
return(i);
}
/*------------------------------------------------------------------*/
/*
* Set Mode
*/
static int
set_mode_info(int skfd,
char * ifname,
char * args[], /* Command line args */
int count) /* Args count */
{
struct iwreq wrq;
unsigned int k; /* Must be unsigned */
/* Avoid "Unused parameter" warning */
count = count;
/* Check if it is a uint, otherwise get is as a string */
if(sscanf(args[0], "%i", &k) != 1)
{
k = 0;
while((k < IW_NUM_OPER_MODE) &&
strncasecmp(args[0], iw_operation_mode[k], 3))
k++;
}
if(k >= IW_NUM_OPER_MODE)
{
errarg = 0;
return(IWERR_ARG_TYPE);
}
wrq.u.mode = k;
if(iw_set_ext(skfd, ifname, SIOCSIWMODE, &wrq) < 0)
return(IWERR_SET_EXT);
/* 1 arg */
return(1);
}
/*------------------------------------------------------------------*/
/*
* Set frequency/channel
*/
static int
set_freq_info(int skfd,
char * ifname,
char * args[], /* Command line args */
int count) /* Args count */
{
struct iwreq wrq;
int i = 1;
if(!strcasecmp(args[0], "auto"))
{
wrq.u.freq.m = -1;
wrq.u.freq.e = 0;
wrq.u.freq.flags = 0;
}
else
{
if(!strcasecmp(args[0], "fixed"))
{
/* Get old frequency */
if(iw_get_ext(skfd, ifname, SIOCGIWFREQ, &wrq) < 0)
return(IWERR_GET_EXT);
wrq.u.freq.flags = IW_FREQ_FIXED;
}
else /* Should be a numeric value */
{
double freq;
char * unit;
freq = strtod(args[0], &unit);
if(unit == args[0])
{
errarg = 0;
return(IWERR_ARG_TYPE);
}
if(unit != NULL)
{
if(unit[0] == 'G') freq *= GIGA;
if(unit[0] == 'M') freq *= MEGA;
if(unit[0] == 'k') freq *= KILO;
}
iw_float2freq(freq, &(wrq.u.freq));
wrq.u.freq.flags = IW_FREQ_FIXED;
/* Check for an additional argument */
if((i < count) && (!strcasecmp(args[i], "auto")))
{
wrq.u.freq.flags = 0;
++i;
}
if((i < count) && (!strcasecmp(args[i], "fixed")))
{
wrq.u.freq.flags = IW_FREQ_FIXED;
++i;
}
}
}
if(iw_set_ext(skfd, ifname, SIOCSIWFREQ, &wrq) < 0)
return(IWERR_SET_EXT);
/* Var args */
return(i);
}
/*------------------------------------------------------------------*/
/*
* Set Bit Rate
*/
static int
set_bitrate_info(int skfd,
char * ifname,
char * args[], /* Command line args */
int count) /* Args count */
{
struct iwreq wrq;
int i = 1;
wrq.u.bitrate.flags = 0;
if(!strcasecmp(args[0], "auto"))
{
wrq.u.bitrate.value = -1;
wrq.u.bitrate.fixed = 0;
}
else
{
if(!strcasecmp(args[0], "fixed"))
{
/* Get old bitrate */
if(iw_get_ext(skfd, ifname, SIOCGIWRATE, &wrq) < 0)
return(IWERR_GET_EXT);
wrq.u.bitrate.fixed = 1;
}
else /* Should be a numeric value */
{
double brate;
char * unit;
brate = strtod(args[0], &unit);
if(unit == args[0])
{
errarg = 0;
return(IWERR_ARG_TYPE);
}
if(unit != NULL)
{
if(unit[0] == 'G') brate *= GIGA;
if(unit[0] == 'M') brate *= MEGA;
if(unit[0] == 'k') brate *= KILO;
}
wrq.u.bitrate.value = (long) brate;
wrq.u.bitrate.fixed = 1;
/* Check for an additional argument */
if((i < count) && (!strcasecmp(args[i], "auto")))
{
wrq.u.bitrate.fixed = 0;
++i;
}
if((i < count) && (!strcasecmp(args[i], "fixed")))
{
wrq.u.bitrate.fixed = 1;
++i;
}
if((i < count) && (!strcasecmp(args[i], "unicast")))
{
wrq.u.bitrate.flags |= IW_BITRATE_UNICAST;
++i;
}
if((i < count) && (!strcasecmp(args[i], "broadcast")))
{
wrq.u.bitrate.flags |= IW_BITRATE_BROADCAST;
++i;
}
}
}
if(iw_set_ext(skfd, ifname, SIOCSIWRATE, &wrq) < 0)
return(IWERR_SET_EXT);
/* Var args */
return(i);
}
/*------------------------------------------------------------------*/
/*
* Set encryption
*/
static int
set_enc_info(int skfd,
char * ifname,
char * args[], /* Command line args */
int count) /* Args count */
{
struct iwreq wrq;
int i = 1;
unsigned char key[IW_ENCODING_TOKEN_MAX];
if(!strcasecmp(args[0], "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;
if(iw_get_ext(skfd, ifname, SIOCGIWENCODE, &wrq) < 0)
return(IWERR_GET_EXT);
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;
i = 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)
{
errarg = 0;
return(IWERR_ARG_TYPE);
}
}
if(iw_set_ext(skfd, ifname, SIOCSIWENCODE, &wrq) < 0)
return(IWERR_SET_EXT);
/* Var arg */
return(i);
}
/*------------------------------------------------------------------*/
/*
* Set Power Management
*/
static int
set_power_info(int skfd,
char * ifname,
char * args[], /* Command line args */
int count) /* Args count */
{
struct iwreq wrq;
int i = 1;
if(!strcasecmp(args[0], "off"))
wrq.u.power.disabled = 1; /* i.e. max size */
else
if(!strcasecmp(args[0], "on"))
{
/* Get old Power info */
wrq.u.power.flags = 0;
if(iw_get_ext(skfd, ifname, SIOCGIWPOWER, &wrq) < 0)
return(IWERR_GET_EXT);
wrq.u.power.disabled = 0;
}
else
{
double value;
char * unit;
int gotone = 0;
/* Parse modifiers */
i = parse_modifiers(args, count, &wrq.u.power.flags,
iwmod_power, IWMOD_POWER_NUM);
if(i < 0)
return(i);
wrq.u.power.disabled = 0;
/* Is there any value to grab ? */
value = strtod(args[i], &unit);
if(unit != args[i])
{
struct iw_range range;
int flags;
/* Extract range info to handle properly 'relative' */
if(iw_get_range_info(skfd, ifname, &range) < 0)
memset(&range, 0, sizeof(range));
/* Get the flags to be able to do the proper conversion */
switch(wrq.u.power.flags & IW_POWER_TYPE)
{
case IW_POWER_SAVING:
flags = range.pms_flags;
break;
case IW_POWER_TIMEOUT:
flags = range.pmt_flags;
break;
default:
flags = range.pmp_flags;
break;
}
/* Check if time or relative */
if(flags & IW_POWER_RELATIVE)
{
if(range.we_version_compiled < 21)
value *= MEGA;
else
wrq.u.power.flags |= IW_POWER_RELATIVE;
}
else
{
value *= MEGA; /* default = s */
if(unit[0] == 'u') value /= MEGA;
if(unit[0] == 'm') value /= KILO;
}
wrq.u.power.value = (long) value;
/* Set some default type if none */
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)
{
errarg = i;
return(IWERR_ARG_TYPE);
}
}
if(iw_set_ext(skfd, ifname, SIOCSIWPOWER, &wrq) < 0)
return(IWERR_SET_EXT);
/* Var args */
return(i);
}
#ifndef WE_ESSENTIAL
/*------------------------------------------------------------------*/
/*
* Set Nickname
*/
static int
set_nick_info(int skfd,
char * ifname,
char * args[], /* Command line args */
int count) /* Args count */
{
struct iwreq wrq;
int we_kernel_version;
/* Avoid "Unused parameter" warning */
count = count;
if(strlen(args[0]) > IW_ESSID_MAX_SIZE)
{
errmax = IW_ESSID_MAX_SIZE;
return(IWERR_ARG_SIZE);
}
we_kernel_version = iw_get_kernel_we_version();
wrq.u.essid.pointer = (caddr_t) args[0];
wrq.u.essid.length = strlen(args[0]);
if(we_kernel_version < 21)
wrq.u.essid.length++;
if(iw_set_ext(skfd, ifname, SIOCSIWNICKN, &wrq) < 0)
return(IWERR_SET_EXT);
/* 1 args */
return(1);
}
/*------------------------------------------------------------------*/
/*
* Set commit
*/
static int
set_nwid_info(int skfd,
char * ifname,
char * args[], /* Command line args */
int count) /* Args count */
{
struct iwreq wrq;
unsigned long temp;
/* Avoid "Unused parameter" warning */
count = count;
if((!strcasecmp(args[0], "off")) ||
(!strcasecmp(args[0], "any")))
wrq.u.nwid.disabled = 1;
else
if(!strcasecmp(args[0], "on"))
{
/* Get old nwid */
if(iw_get_ext(skfd, ifname, SIOCGIWNWID, &wrq) < 0)
return(IWERR_GET_EXT);
wrq.u.nwid.disabled = 0;
}
else
if(sscanf(args[0], "%lX", &(temp)) != 1)
{
errarg = 0;
return(IWERR_ARG_TYPE);
}
else
{
wrq.u.nwid.value = temp;
wrq.u.nwid.disabled = 0;
}
wrq.u.nwid.fixed = 1;
/* Set new nwid */
if(iw_set_ext(skfd, ifname, SIOCSIWNWID, &wrq) < 0)
return(IWERR_SET_EXT);
/* 1 arg */
return(1);
}
/*------------------------------------------------------------------*/
/*
* Set AP Address
*/
static int
set_apaddr_info(int skfd,
char * ifname,
char * args[], /* Command line args */
int count) /* Args count */
{
struct iwreq wrq;
/* Avoid "Unused parameter" warning */
count = count;
if((!strcasecmp(args[0], "auto")) ||
(!strcasecmp(args[0], "any")))
{
/* Send a broadcast address */
iw_broad_ether(&(wrq.u.ap_addr));
}
else
{
if(!strcasecmp(args[0], "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[0], &(wrq.u.ap_addr)) < 0)
{
errarg = 0;
return(IWERR_ARG_TYPE);
}
}
}
if(iw_set_ext(skfd, ifname, SIOCSIWAP, &wrq) < 0)
return(IWERR_SET_EXT);
/* 1 args */
return(1);
}
/*------------------------------------------------------------------*/
/*
* Set Tx Power
*/
static int
set_txpower_info(int skfd,
char * ifname,
char * args[], /* Command line args */
int count) /* Args count */
{
struct iwreq wrq;
int i = 1;
/* Avoid "Unused parameter" warning */
args = args; count = count;
/* 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[0], "off"))
wrq.u.txpower.disabled = 1; /* i.e. turn radio off */
else
if(!strcasecmp(args[0], "auto"))
wrq.u.txpower.fixed = 0; /* i.e. use power control */
else
{
if(!strcasecmp(args[0], "on"))
{
/* Get old tx-power */
if(iw_get_ext(skfd, ifname, SIOCGIWTXPOW, &wrq) < 0)
return(IWERR_GET_EXT);
wrq.u.txpower.disabled = 0;
}
else
{
if(!strcasecmp(args[0], "fixed"))
{
/* Get old tx-power */
if(iw_get_ext(skfd, ifname, SIOCGIWTXPOW, &wrq) < 0)
return(IWERR_GET_EXT);
wrq.u.txpower.fixed = 1;
wrq.u.txpower.disabled = 0;
}
else /* Should be a numeric value */
{
int power;
int ismwatt = 0;
struct iw_range range;
/* Extract range info to do proper conversion */
if(iw_get_range_info(skfd, ifname, &range) < 0)
memset(&range, 0, sizeof(range));
/* Get the value */
if(sscanf(args[0], "%i", &(power)) != 1)
{
errarg = 0;
return(IWERR_ARG_TYPE);
}
/* Check if milliWatt
* We authorise a single 'm' as a shorthand for 'mW',
* on the other hand a 'd' probably means 'dBm'... */
ismwatt = ((strchr(args[0], 'm') != NULL)
&& (strchr(args[0], 'd') == NULL));
/* We could check 'W' alone... Another time... */
/* Convert */
if(range.txpower_capa & IW_TXPOW_RELATIVE)
{
/* Can't convert */
if(ismwatt)
{
errarg = 0;
return(IWERR_ARG_TYPE);
}
wrq.u.txpower.flags = IW_TXPOW_RELATIVE;
}
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 < count) && (!strcasecmp(args[i], "auto")))
{
wrq.u.txpower.fixed = 0;
++i;
}
if((i < count) && (!strcasecmp(args[i], "fixed")))
{
wrq.u.txpower.fixed = 1;
++i;
}
}
}
}
if(iw_set_ext(skfd, ifname, SIOCSIWTXPOW, &wrq) < 0)
return(IWERR_SET_EXT);
/* Var args */
return(i);
}
/*------------------------------------------------------------------*/
/*
* Set Sensitivity
*/
static int
set_sens_info(int skfd,
char * ifname,
char * args[], /* Command line args */
int count) /* Args count */
{
struct iwreq wrq;
int temp;
/* Avoid "Unused parameter" warning */
count = count;
if(sscanf(args[0], "%i", &(temp)) != 1)
{
errarg = 0;
return(IWERR_ARG_TYPE);
}
wrq.u.sens.value = temp;
if(iw_set_ext(skfd, ifname, SIOCSIWSENS, &wrq) < 0)
return(IWERR_SET_EXT);
/* 1 arg */
return(1);
}
/*------------------------------------------------------------------*/
/*
* Set Retry Limit
*/
static int
set_retry_info(int skfd,
char * ifname,
char * args[], /* Command line args */
int count) /* Args count */
{
struct iwreq wrq;
int i = 0;
double value;
char * unit;
/* Parse modifiers */
i = parse_modifiers(args, count, &wrq.u.retry.flags,
iwmod_retry, IWMOD_RETRY_NUM);
if(i < 0)
return(i);
/* Add default type if none */
if((wrq.u.retry.flags & IW_RETRY_TYPE) == 0)
wrq.u.retry.flags |= IW_RETRY_LIMIT;
wrq.u.retry.disabled = 0;
/* Is there any value to grab ? */
value = strtod(args[i], &unit);
if(unit == args[i])
{
errarg = i;
return(IWERR_ARG_TYPE);
}
/* Limit is absolute, on the other hand lifetime is seconds */
if(wrq.u.retry.flags & IW_RETRY_LIFETIME)
{
struct iw_range range;
/* Extract range info to handle properly 'relative' */
if(iw_get_range_info(skfd, ifname, &range) < 0)
memset(&range, 0, sizeof(range));
if(range.r_time_flags & IW_RETRY_RELATIVE)
{
if(range.we_version_compiled < 21)
value *= MEGA;
else
wrq.u.retry.flags |= IW_RETRY_RELATIVE;
}
else
{
/* Normalise lifetime */
value *= MEGA; /* default = s */
if(unit[0] == 'u') value /= MEGA;
if(unit[0] == 'm') value /= KILO;
}
}
wrq.u.retry.value = (long) value;
++i;
if(iw_set_ext(skfd, ifname, SIOCSIWRETRY, &wrq) < 0)
return(IWERR_SET_EXT);
/* Var args */
return(i);
}
/*------------------------------------------------------------------*/
/*
* Set RTS Threshold
*/
static int
set_rts_info(int skfd,
char * ifname,
char * args[], /* Command line args */
int count) /* Args count */
{
struct iwreq wrq;
/* Avoid "Unused parameter" warning */
count = count;
wrq.u.rts.value = -1;
wrq.u.rts.fixed = 1;
wrq.u.rts.disabled = 0;
if(!strcasecmp(args[0], "off"))
wrq.u.rts.disabled = 1; /* i.e. max size */
else
if(!strcasecmp(args[0], "auto"))
wrq.u.rts.fixed = 0;
else
{
if(!strcasecmp(args[0], "fixed"))
{
/* Get old RTS threshold */
if(iw_get_ext(skfd, ifname, SIOCGIWRTS, &wrq) < 0)
return(IWERR_GET_EXT);
wrq.u.rts.fixed = 1;
}
else
{ /* Should be a numeric value */
long temp;
if(sscanf(args[0], "%li", (unsigned long *) &(temp)) != 1)
{
errarg = 0;
return(IWERR_ARG_TYPE);
}
wrq.u.rts.value = temp;
}
}
if(iw_set_ext(skfd, ifname, SIOCSIWRTS, &wrq) < 0)
return(IWERR_SET_EXT);
/* 1 arg */
return(1);
}
/*------------------------------------------------------------------*/
/*
* Set Fragmentation Threshold
*/
static int
set_frag_info(int skfd,
char * ifname,
char * args[], /* Command line args */
int count) /* Args count */
{
struct iwreq wrq;
/* Avoid "Unused parameter" warning */
count = count;
wrq.u.frag.value = -1;
wrq.u.frag.fixed = 1;
wrq.u.frag.disabled = 0;
if(!strcasecmp(args[0], "off"))
wrq.u.frag.disabled = 1; /* i.e. max size */
else
if(!strcasecmp(args[0], "auto"))
wrq.u.frag.fixed = 0;
else
{
if(!strcasecmp(args[0], "fixed"))
{
/* Get old fragmentation threshold */
if(iw_get_ext(skfd, ifname, SIOCGIWFRAG, &wrq) < 0)
return(IWERR_GET_EXT);
wrq.u.frag.fixed = 1;
}
else
{ /* Should be a numeric value */
long temp;
if(sscanf(args[0], "%li", &(temp))
!= 1)
{
errarg = 0;
return(IWERR_ARG_TYPE);
}
wrq.u.frag.value = temp;
}
}
if(iw_set_ext(skfd, ifname, SIOCSIWFRAG, &wrq) < 0)
return(IWERR_SET_EXT);
/* 1 arg */
return(1);
}
/*------------------------------------------------------------------*/
/*
* Set Modulation
*/
static int
set_modulation_info(int skfd,
char * ifname,
char * args[], /* Command line args */
int count) /* Args count */
{
struct iwreq wrq;
int i = 1;
/* Avoid "Unused parameter" warning */
args = args; count = count;
if(!strcasecmp(args[0], "auto"))
wrq.u.param.fixed = 0; /* i.e. use any modulation */
else
{
if(!strcasecmp(args[0], "fixed"))
{
/* Get old modulation */
if(iw_get_ext(skfd, ifname, SIOCGIWMODUL, &wrq) < 0)
return(IWERR_GET_EXT);
wrq.u.param.fixed = 1;
}
else
{
int k;
/* Allow multiple modulations, combine them together */
wrq.u.param.value = 0x0;
i = 0;
do
{
for(k = 0; k < IW_SIZE_MODUL_LIST; k++)
{
if(!strcasecmp(args[i], iw_modul_list[k].cmd))
{
wrq.u.param.value |= iw_modul_list[k].mask;
++i;
break;
}
}
}
/* For as long as current arg matched and not out of args */
while((i < count) && (k < IW_SIZE_MODUL_LIST));
/* Check we got something */
if(i == 0)
{
errarg = 0;
return(IWERR_ARG_TYPE);
}
/* Check for an additional argument */
if((i < count) && (!strcasecmp(args[i], "auto")))
{
wrq.u.param.fixed = 0;
++i;
}
if((i < count) && (!strcasecmp(args[i], "fixed")))
{
wrq.u.param.fixed = 1;
++i;
}
}
}
if(iw_set_ext(skfd, ifname, SIOCSIWMODUL, &wrq) < 0)
return(IWERR_SET_EXT);
/* Var args */
return(i);
}
#endif /* WE_ESSENTIAL */
/*------------------------------------------------------------------*/
/*
* Set commit
*/
static int
set_commit_info(int skfd,
char * ifname,
char * args[], /* Command line args */
int count) /* Args count */
{
struct iwreq wrq;
/* Avoid "Unused parameter" warning */
args = args; count = count;
if(iw_set_ext(skfd, ifname, SIOCSIWCOMMIT, &wrq) < 0)
return(IWERR_SET_EXT);
/* No args */
return(0);
}
/************************** SET DISPATCHER **************************/
/*
* This is a modified version of the dispatcher in iwlist.
* The main difference is that here we may have multiple commands per
* line. Also, most commands here do take arguments, and most often
* a variable number of them.
* Therefore, the handler *must* return how many args were consumed...
*
* Note that the use of multiple commands per line is not advised
* in scripts, as it makes error management hard. All commands before
* the error are executed, but commands after the error are not
* processed.
* We also try to give as much clue as possible via stderr to the caller
* on which command did fail, but if there are two time the same command,
* you don't know which one failed...
*/
/*------------------------------------------------------------------*/
/*
* Map command line arguments to the proper procedure...
*/
typedef struct iwconfig_entry {
const char * cmd; /* Command line shorthand */
iw_enum_handler fn; /* Subroutine */
int min_count;
int request; /* WE numerical ID */
const char * name; /* Human readable string */
const char * argsname; /* Args as human readable string */
} iwconfig_cmd;
static const struct iwconfig_entry iwconfig_cmds[] = {
{ "essid", set_essid_info, 1, SIOCSIWESSID,
"Set ESSID", "{NNN|any|on|off}" },
{ "mode", set_mode_info, 1, SIOCSIWMODE,
"Set Mode", "{managed|ad-hoc|master|...}" },
{ "freq", set_freq_info, 1, SIOCSIWFREQ,
"Set Frequency", "N.NNN[k|M|G]" },
{ "channel", set_freq_info, 1, SIOCSIWFREQ,
"Set Frequency", "N" },
{ "bit", set_bitrate_info, 1, SIOCSIWRATE,
"Set Bit Rate", "{N[k|M|G]|auto|fixed}" },
{ "rate", set_bitrate_info, 1, SIOCSIWRATE,
"Set Bit Rate", "{N[k|M|G]|auto|fixed}" },
{ "enc", set_enc_info, 1, SIOCSIWENCODE,
"Set Encode", "{NNNN-NNNN|off}" },
{ "key", set_enc_info, 1, SIOCSIWENCODE,
"Set Encode", "{NNNN-NNNN|off}" },
{ "power", set_power_info, 1, SIOCSIWPOWER,
"Set Power Management", "{period N|timeout N|saving N|off}" },
#ifndef WE_ESSENTIAL
{ "nickname", set_nick_info, 1, SIOCSIWNICKN,
"Set Nickname", "NNN" },
{ "nwid", set_nwid_info, 1, SIOCSIWNWID,
"Set NWID", "{NN|on|off}" },
{ "ap", set_apaddr_info, 1, SIOCSIWAP,
"Set AP Address", "{N|off|auto}" },
{ "txpower", set_txpower_info, 1, SIOCSIWTXPOW,
"Set Tx Power", "{NmW|NdBm|off|auto}" },
{ "sens", set_sens_info, 1, SIOCSIWSENS,
"Set Sensitivity", "N" },
{ "retry", set_retry_info, 1, SIOCSIWRETRY,
"Set Retry Limit", "{limit N|lifetime N}" },
{ "rts", set_rts_info, 1, SIOCSIWRTS,
"Set RTS Threshold", "{N|auto|fixed|off}" },
{ "frag", set_frag_info, 1, SIOCSIWFRAG,
"Set Fragmentation Threshold", "{N|auto|fixed|off}" },
{ "modulation", set_modulation_info, 1, SIOCGIWMODUL,
"Set Modulation", "{11g|11a|CCK|OFDMg|...}" },
#endif /* WE_ESSENTIAL */
{ "commit", set_commit_info, 0, SIOCSIWCOMMIT,
"Commit changes", "" },
{ NULL, NULL, 0, 0, NULL, NULL },
};
/*------------------------------------------------------------------*/
/*
* Find the most appropriate command matching the command line
*/
static inline const iwconfig_cmd *
find_command(const char * cmd)
{
const iwconfig_cmd * found = NULL;
int ambig = 0;
unsigned int len = strlen(cmd);
int i;
/* Go through all commands */
for(i = 0; iwconfig_cmds[i].cmd != NULL; ++i)
{
/* No match -> next one */
if(strncasecmp(iwconfig_cmds[i].cmd, cmd, len) != 0)
continue;
/* Exact match -> perfect */
if(len == strlen(iwconfig_cmds[i].cmd))
return &iwconfig_cmds[i];
/* Partial match */
if(found == NULL)
/* First time */
found = &iwconfig_cmds[i];
else
/* Another time */
if (iwconfig_cmds[i].fn != found->fn)
ambig = 1;
}
if(found == NULL)
{
fprintf(stderr, "iwconfig: unknown command \"%s\"\n", cmd);
return NULL;
}
if(ambig)
{
fprintf(stderr, "iwconfig: command \"%s\" is ambiguous\n", cmd);
return NULL;
}
return found;
}
/*------------------------------------------------------------------*/
/*
* Set the wireless options requested on command line
* Find the individual commands and call the appropriate subroutine
*/
static int
set_info(int skfd, /* The socket */
char * args[], /* Command line args */
int count, /* Args count */
char * ifname) /* Dev name */
{
const iwconfig_cmd * iwcmd;
int ret;
/* Loop until we run out of args... */
while(count > 0)
{
/* find the command matching the keyword */
iwcmd = find_command(args[0]);
if(iwcmd == NULL)
{
/* Here we have an unrecognised arg... Error already printed out. */
return(-1);
}
/* One arg is consumed (the command name) */
args++;
count--;
/* Check arg numbers */
if(count < iwcmd->min_count)
ret = IWERR_ARG_NUM;
else
ret = 0;
/* Call the command */
if(!ret)
ret = (*iwcmd->fn)(skfd, ifname, args, count);
/* Deal with various errors */
if(ret < 0)
{
int request = iwcmd->request;
if(ret == IWERR_GET_EXT)
request++; /* Transform the SET into GET */
fprintf(stderr, "Error for wireless request \"%s\" (%X) :\n",
iwcmd->name, request);
switch(ret)
{
case IWERR_ARG_NUM:
fprintf(stderr, " too few arguments.\n");
break;
case IWERR_ARG_TYPE:
if(errarg < 0)
errarg = 0;
if(errarg >= count)
errarg = count - 1;
fprintf(stderr, " invalid argument \"%s\".\n", args[errarg]);
break;
case IWERR_ARG_SIZE:
fprintf(stderr, " argument too big (max %d)\n", errmax);
break;
case IWERR_ARG_CONFLICT:
if(errarg < 0)
errarg = 0;
if(errarg >= count)
errarg = count - 1;
fprintf(stderr, " conflicting argument \"%s\".\n", args[errarg]);
break;
case IWERR_SET_EXT:
fprintf(stderr, " SET failed on device %-1.16s ; %s.\n",
ifname, strerror(errno));
break;
case IWERR_GET_EXT:
fprintf(stderr, " GET failed on device %-1.16s ; %s.\n",
ifname, strerror(errno));
break;
}
/* Stop processing, we don't know if we are in a consistent state
* in reading the command line */
return(ret);
}
/* Substract consumed args from command line */
args += ret;
count -= ret;
/* Loop back */
}
/* Done, all done */
return(0);
}
/*------------------------------------------------------------------*/
/*
* Display help
*/
static inline void
iw_usage(void)
{
int i;
fprintf(stderr, "Usage: iwconfig [interface]\n");
for(i = 0; iwconfig_cmds[i].cmd != NULL; ++i)
fprintf(stderr, " interface %s %s\n",
iwconfig_cmds[i].cmd, iwconfig_cmds[i].argsname);
fprintf(stderr, " Check man pages for more details.\n");
}
/******************************* 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
{
/* '--' escape device name */
if((argc > 2) && !strcmp(argv[1], "--"))
{
argv++;
argc--;
}
/* The device name must be the first argument */
if(argc == 2)
goterr = 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);
}