diff options
| -rw-r--r-- | NEWS | 16 | ||||
| -rw-r--r-- | THANKS | 2 | ||||
| -rw-r--r-- | conf.c | 132 | ||||
| -rw-r--r-- | conf_scr.c | 2 | ||||
| -rwxr-xr-x | configure | 18 | ||||
| -rw-r--r-- | configure.ac | 2 | ||||
| -rw-r--r-- | iw_if.c | 49 | ||||
| -rw-r--r-- | iw_if.h | 7 | ||||
| -rw-r--r-- | iw_scan.c | 54 | ||||
| -rw-r--r-- | scan_scr.c | 11 | ||||
| -rw-r--r-- | wavemon.1 | 9 | ||||
| -rw-r--r-- | wavemon.h | 22 | ||||
| -rw-r--r-- | wavemonrc.5 | 54 |
13 files changed, 244 insertions, 134 deletions
@@ -1,5 +1,21 @@ NEWS ==== +-------------------- +0.7.4 (2012-02-03) +-------------------- + * General: + - deprecate reliance on /proc/net/wireless, since tests on Tiny Core Linux + showed that it no longer reliably lists available wireless interfaces, + - instead use safe route of using /proc/net/dev, probing each interface + in turn for wireless extensions; + * Scan window: + - configurable scan sort order (at runtime and via configuration file), + - can sort by (combinations of) channel, signal strength, and openness, + - visually distinguish 2.4GHz and 5.8GHz channels; + * Fixes: + - wavemonrc.5 manpage fixes thanks to Jonathan McCrohan, + - support common options (-v/-h) even if no interfaces found, + - but do not start operation unless at least 1 wireless interface exists. -------------------- 0.7.3 (2011-12-22) @@ -30,3 +30,5 @@ Thanks to Matt who helped fixing several bugs in 0.7.0. Robert M. Stockmann and Koniu helped with bug fixes in 0.7.1; thanks to Koniu support for window resizing got started. + +Jonathan McCrohan fixed manpage compilation errors in 0.7.4. @@ -34,6 +34,17 @@ static char *action_items[] = { NULL }; +static char *sort_order[] = { + [SO_CHAN] = "Channel", + [SO_CHAN_REV] = "Rev Channel", + [SO_SIGNAL] = "Signal", + [SO_OPEN] = "Open", + [SO_CHAN_SIG] = "Chan/Sig", + [SO_OPEN_SIG] = "Open/Sig", + [SO_OPEN_CH_SI] = "Open/Chan/Sig", + NULL +}; + static char *screen_names[] = { [SCR_INFO] = "Info screen", [SCR_LHIST] = "Histogram", @@ -59,6 +70,7 @@ struct wavemon_conf conf = { .noise_min = -102, .noise_max = 10, + .scan_sort_order = SO_CHAN, .lthreshold_action = TA_DISABLED, .lthreshold = -80, .hthreshold_action = TA_DISABLED, @@ -67,58 +79,8 @@ struct wavemon_conf conf = { .startup_scr = 0, }; -static void version(void) -{ - printf("wavemon wireless monitor %s\n", PACKAGE_VERSION); - printf("Distributed under the terms of the GPLv3.\n"); -} - -static void usage(void) -{ - printf("Usage: wavemon [ -dhlrv ] [ -i ifname ]\n\n"); - printf(" -d Dump the current device status to stdout and exit\n"); - printf(" -g Ensure screen is sufficiently dimensioned\n"); - printf(" -h This help screen\n"); - printf(" -i <ifname> Use specified network interface (default: auto)\n"); - printf(" -r Generate random levels (for testing purposes)\n"); - printf(" -v Print version number and exit\n\n"); -} - -static void getargs(int argc, char *argv[]) -{ - int arg; - - while ((arg = getopt(argc, argv, "dghi:rv")) >= 0) - switch (arg) { - case 'd': - dump_parameters(); - exit(EXIT_SUCCESS); - case 'g': - conf.check_geometry = true; - break; - case 'h': - usage(); - exit(EXIT_SUCCESS); - case 'i': - conf.if_idx = argv_find(if_list, optarg); - if (conf.if_idx < 0) - err_quit("no wireless extensions found on '%s'", - optarg); - break; - case 'r': - conf.random = true; - break; - case 'v': - version(); - exit(EXIT_SUCCESS); - default: - /* bad argument. bad bad */ - exit(EXIT_FAILURE); - } -} - /** Populate interface list */ -void conf_get_interface_list(void) +void conf_get_interface_list(bool init) { char *old_if = NULL; int idx; @@ -132,7 +94,7 @@ void conf_get_interface_list(void) free(if_list); } if_list = iw_get_interface_list(); - if (if_list == NULL) + if (if_list == NULL && !init) err_quit("no wireless interfaces found!"); conf.if_idx = 0; @@ -240,7 +202,7 @@ static void read_cf(void) } break; case t_list: - v_int = argv_find(ci->list, rv); + v_int = ci->list ? argv_find(ci->list, rv) : -1; if (v_int < 0) err_msg("%s, line %d: '%s = %s' is not valid - using defaults", cfname, lnum, lv, rv); @@ -364,6 +326,14 @@ static void init_conf_items(void) ll_push(conf_items, "*", item); item = calloc(1, sizeof(*item)); + item->name = strdup("Scan sort order"); + item->cfname = strdup("sort_order"); + item->type = t_list; + item->v.i = &conf.scan_sort_order; + item->list = sort_order; + ll_push(conf_items, "*", item); + + item = calloc(1, sizeof(*item)); item->name = strdup("Statistics updates"); item->cfname = strdup("stat_updates"); item->type = t_int; @@ -554,8 +524,60 @@ static void init_conf_items(void) void getconf(int argc, char *argv[]) { - conf_get_interface_list(); + int arg, dump = 0, help = 0, version = 0; + + conf_get_interface_list(true); init_conf_items(); read_cf(); - getargs(argc, argv); + + while ((arg = getopt(argc, argv, "dghi:rv")) >= 0) { + switch (arg) { + case 'd': + if (if_list) + dump++; + break; + case 'g': + conf.check_geometry = true; + break; + case 'h': + help++; + break; + case 'i': + conf.if_idx = if_list ? argv_find(if_list, optarg) : -1; + if (conf.if_idx < 0) + err_quit("no wireless extensions found on '%s'", + optarg); + break; + case 'r': + conf.random = true; + break; + case 'v': + version++; + break; + default: + /* bad argument. bad bad */ + exit(EXIT_FAILURE); + } + } + + if (version) { + printf("wavemon wireless monitor %s\n", PACKAGE_VERSION); + printf("Distributed under the terms of the GPLv3.\n%s", help ? "\n" : ""); + } + if (help) { + printf("usage: wavemon [ -dhlrv ] [ -i ifname ]\n"); + printf(" -d Dump the current device status to stdout and exit\n"); + printf(" -g Ensure screen is sufficiently dimensioned\n"); + printf(" -h This help screen\n"); + printf(" -i <ifname> Use specified network interface (default: auto)\n"); + printf(" -r Generate random levels (for testing purposes)\n"); + printf(" -v Print version number\n"); + } else if (dump) { + dump_parameters(); + } + + if (version || help || dump) + exit(EXIT_SUCCESS); + else if (if_list == NULL) + err_quit("no supported wireless interfaces found"); } @@ -159,7 +159,7 @@ static int m_pref(WINDOW *w_conf, int list_offset, int active_item, int num_item void scr_conf_init(void) { - conf_get_interface_list(); /* may have changed in the meantime */ + conf_get_interface_list(false); /* may have changed in the meantime */ num_items = ll_size(conf_items); w_conf = newwin_title(0, WAV_HEIGHT, "Preferences", false); @@ -1,6 +1,6 @@ #! /bin/sh # Guess values for system-dependent variables and create Makefiles. -# Generated by GNU Autoconf 2.68 for wavemon 0.7.3. +# Generated by GNU Autoconf 2.68 for wavemon 0.7.4. # # Report bugs to <gerrit@erg.abdn.ac.uk>. # @@ -560,8 +560,8 @@ MAKEFLAGS= # Identity of this package. PACKAGE_NAME='wavemon' PACKAGE_TARNAME='wavemon-current' -PACKAGE_VERSION='0.7.3' -PACKAGE_STRING='wavemon 0.7.3' +PACKAGE_VERSION='0.7.4' +PACKAGE_STRING='wavemon 0.7.4' PACKAGE_BUGREPORT='gerrit@erg.abdn.ac.uk' PACKAGE_URL='http://eden-feed.erg.abdn.ac.uk/wavemon' @@ -1217,7 +1217,7 @@ if test "$ac_init_help" = "long"; then # Omit some internal or obsolete options to make the list less imposing. # This message is too long to be a string in the A/UX 3.1 sh. cat <<_ACEOF -\`configure' configures wavemon 0.7.3 to adapt to many kinds of systems. +\`configure' configures wavemon 0.7.4 to adapt to many kinds of systems. Usage: $0 [OPTION]... [VAR=VALUE]... @@ -1282,7 +1282,7 @@ fi if test -n "$ac_init_help"; then case $ac_init_help in - short | recursive ) echo "Configuration of wavemon 0.7.3:";; + short | recursive ) echo "Configuration of wavemon 0.7.4:";; esac cat <<\_ACEOF @@ -1363,7 +1363,7 @@ fi test -n "$ac_init_help" && exit $ac_status if $ac_init_version; then cat <<\_ACEOF -wavemon configure 0.7.3 +wavemon configure 0.7.4 generated by GNU Autoconf 2.68 Copyright (C) 2010 Free Software Foundation, Inc. @@ -1786,7 +1786,7 @@ cat >config.log <<_ACEOF This file contains any messages produced by compilers while running configure, to aid debugging if configure makes a mistake. -It was created by wavemon $as_me 0.7.3, which was +It was created by wavemon $as_me 0.7.4, which was generated by GNU Autoconf 2.68. Invocation command line was $ $0 $@ @@ -4610,7 +4610,7 @@ cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1 # report actual input values of CONFIG_FILES etc. instead of their # values after options handling. ac_log=" -This file was extended by wavemon $as_me 0.7.3, which was +This file was extended by wavemon $as_me 0.7.4, which was generated by GNU Autoconf 2.68. Invocation command line was CONFIG_FILES = $CONFIG_FILES @@ -4664,7 +4664,7 @@ _ACEOF cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1 ac_cs_config="`$as_echo "$ac_configure_args" | sed 's/^ //; s/[\\""\`\$]/\\\\&/g'`" ac_cs_version="\\ -wavemon config.status 0.7.3 +wavemon config.status 0.7.4 configured by $0, generated by GNU Autoconf 2.68, with options \\"\$ac_cs_config\\" diff --git a/configure.ac b/configure.ac index 62666fe..48e4d88 100644 --- a/configure.ac +++ b/configure.ac @@ -1,6 +1,6 @@ dnl Process this file with autoconf to produce a configure script. AC_PREREQ(2.64) -AC_INIT([wavemon], [0.7.3], [gerrit@erg.abdn.ac.uk], [wavemon-current], +AC_INIT([wavemon], [0.7.4], [gerrit@erg.abdn.ac.uk], [wavemon-current], [http://eden-feed.erg.abdn.ac.uk/wavemon]) @@ -94,39 +94,45 @@ void if_getinf(const char *ifname, struct if_info *info) close(skfd); } -static FILE *open_proc_net(const char *filename) -{ - char path[128]; - FILE *fp; - - snprintf(path, sizeof(path), "/proc/net/%s", filename); - if (access(path, F_OK) != 0) - err_quit("'%s' not accessible - not compiled in?", path); - - fp = fopen(path, "r"); - if (fp == NULL) - err_sys("can not open %s", path); - - return fp; -} - /** * iw_get_interface_list - Return NULL-terminated array of WiFi interfaces. + * Use the safe route of checking /proc/net/dev/ for wireless interfaces: + * - SIOCGIFCONF only returns running interfaces that have an IP address; + * - /proc/net/wireless may exist, but may not list all wireless interfaces. */ char **iw_get_interface_list(void) { char **if_list = NULL, *p, tmp[BUFSIZ]; int nifs = 1; /* if_list[nifs-1] = NULL */ - FILE *fp = open_proc_net("wireless"); + struct iwreq wrq; + FILE *fp; + int skfd = socket(AF_INET, SOCK_DGRAM, 0); + + if (skfd < 0) + err_sys("%s: can not open socket", __func__); + + fp = fopen("/proc/net/dev", "r"); + if (fp == NULL) + err_sys("can not open /proc/net/dev"); - while (fgets(tmp, sizeof(tmp), fp)) + while (fgets(tmp, sizeof(tmp), fp)) { if ((p = strchr(tmp, ':'))) { - if_list = realloc(if_list, sizeof(char *) * (nifs + 1)); for (*p = '\0', p = tmp; isspace(*p); ) p++; + /* + * Use SIOCGIWNAME as indicator: if interface does not + * support this ioctl, it has no wireless extensions. + */ + strncpy(wrq.ifr_name, p, IFNAMSIZ); + if (ioctl(skfd, SIOCGIWNAME, &wrq) < 0) + continue; + + if_list = realloc(if_list, sizeof(char *) * (nifs + 1)); if_list[nifs-1] = strdup(p); if_list[nifs++] = NULL; } + } + close(skfd); fclose(fp); return if_list; } @@ -136,8 +142,11 @@ void if_getstat(const char *ifname, struct if_stat *stat) char line[0x100]; unsigned long d; char *lp; - FILE *fp = open_proc_net("dev"); + const char path[] = "/proc/net/dev"; + FILE *fp = fopen(path, "r"); + if (fp == NULL) + err_sys("can not open %s", path); /* * Inter-| Receive | Transmit * face |bytes packets errs drop fifo frame compressed multicast|bytes packets @@ -255,12 +255,7 @@ struct scan_result { struct scan_result *next; }; -typedef int (*scan_cmp_func)(const struct scan_result *, const struct scan_result *); -extern int cmp_sig(const struct scan_result *a, const struct scan_result *b); -extern int cmp_freq_sig(const struct scan_result *a, const struct scan_result *b); - -extern struct scan_result *get_scan_list(int skfd, const char *ifname, int we_version, - scan_cmp_func cmp_scan_result); +extern struct scan_result *get_scan_list(int skfd, const char *ifname, int we_version); extern void free_scan_result(struct scan_result *head); /* @@ -547,25 +547,65 @@ static void iw_extract_ie(struct iw_event *iwe, struct scan_result *sr) } /*----------------- End of code copied from iwlib -----------------------*/ +/* + * Ordering functions for scan results + */ +/* Order by ascending frequency. */ +static int cmp_chan(const struct scan_result *a, const struct scan_result *b) +{ + return a->freq < b->freq; +} + +static int cmp_chan_rev(const struct scan_result *a, const struct scan_result *b) +{ + return cmp_chan(b, a); +} + /* Order by descending signal strength. */ -extern int cmp_sig(const struct scan_result *a, const struct scan_result *b) +static int cmp_sig(const struct scan_result *a, const struct scan_result *b) { return a->qual.level - b->qual.level; } /* Order by ascending frequency first, then by descending signal strength. */ -extern int cmp_freq_sig(const struct scan_result *a, const struct scan_result *b) +static int cmp_chan_sig(const struct scan_result *a, const struct scan_result *b) +{ + return a->freq == b->freq ? cmp_sig(a, b) : cmp_chan(a, b); +} + +/* Show open access points first, ordered by mode. */ +static int cmp_open(const struct scan_result *a, const struct scan_result *b) +{ + return a->has_key > b->has_key; +} + +/* Sort (open) access points by descending signal strength. */ +static int cmp_open_sig(const struct scan_result *a, const struct scan_result *b) +{ + return a->has_key == b->has_key ? cmp_sig(a, b) : cmp_open(a, b); +} + +/* Sort (open) access points by ascending frequency, then by descending signal. */ +static int cmp_open_chan_sig(const struct scan_result *a, const struct scan_result *b) { - return a->freq == b->freq ? cmp_sig(a, b) : a->freq < b->freq; + return a->has_key == b->has_key ? cmp_chan_sig(a, b) : cmp_open(a, b); } -struct scan_result *get_scan_list(int skfd, const char *ifname, int we_version, - scan_cmp_func cmp_scan_result) +static int (*scan_cmp[])(const struct scan_result *, const struct scan_result *) = { + [SO_CHAN] = cmp_chan, + [SO_CHAN_REV] = cmp_chan_rev, + [SO_SIGNAL] = cmp_sig, + [SO_OPEN] = cmp_open, + [SO_CHAN_SIG] = cmp_chan_sig, + [SO_OPEN_SIG] = cmp_open_sig, + [SO_OPEN_CH_SI] = cmp_open_chan_sig +}; + +struct scan_result *get_scan_list(int skfd, const char *ifname, int we_version) { struct scan_result *head = NULL; struct iwreq wrq; int wait, waited = 0; - /* * Some drivers may return very large scan results, either because there * are many cells, or there are many large elements. Do not bother to @@ -649,7 +689,7 @@ struct scan_result *get_scan_list(int skfd, const char *ifname, int we_version, f = 0; - while (cur && cmp_scan_result(cur, new) > 0) + while (cur && scan_cmp[conf.scan_sort_order](cur, new) > 0) prev = &cur->next, cur = cur->next; *prev = new; @@ -52,8 +52,11 @@ static char *fmt_scan_result(struct scan_result *cur, struct iw_range *iw_range, if (cur->freq < 1e3) len += snprintf(buf + len, buflen - len, ", Chan %2.0f", cur->freq); + else if (channel >= 0 && cur->freq < 5e9) + len += snprintf(buf + len, buflen - len, ", ch %2d, %g MHz", + channel, cur->freq / 1e6); else if (channel >= 0) - len += snprintf(buf + len, buflen - len, ", Ch %2d, %g MHz", + len += snprintf(buf + len, buflen - len, ", CH %3d, %g MHz", channel, cur->freq / 1e6); else len += snprintf(buf + len, buflen - len, ", %g GHz", @@ -84,7 +87,7 @@ static void display_aplist(WINDOW *w_aplst) iw_getinf_range(conf_ifname(), &range); head = get_scan_list(skfd, conf_ifname(), - range.we_version_compiled, cmp_freq_sig); + range.we_version_compiled); if (head) { ; } else if (errno == EPERM || !has_net_admin_capability()) { @@ -168,8 +171,8 @@ void scr_aplst_init(void) { w_aplst = newwin_title(0, WAV_HEIGHT, "Scan window", false); /* - * Both parent and child process write to the terminal, updating - * different areas of the screen. Suspending wavemon brings the + * Both parent and child process write to the terminal, updating + * different areas of the screen. Suspending wavemon brings the * terminal state out of order, messing up the screen. The choice * is between a more complicated (sophisticated) handling of * signals, and to keep it simple by not allowing to suspend. @@ -1,4 +1,4 @@ -.TH wavemon 1 "February 2011" Linux "User Manuals" +.TH wavemon 1 "March 2012" Linux "User Manuals" .SH NAME wavemon \- a wireless network monitor .SH SYNOPSIS @@ -125,11 +125,8 @@ print version information and exit. .IP "LC_NUMERIC" Influences the grouping of numbers if set. See also \fBlocale\fR(1). .SH FILES -.I $HOME/.wavemonrc -\ the local per-user configuration file. -.br -.I /proc/net/wireless -\ wireless extensions /proc interface +.IP $HOME/.wavemonrc +The local per-user configuration file. .SH "AUTHOR" Written by Jan Morgenstern <jan@jm-music.de>. .SH "REPORTING BUGS" @@ -33,13 +33,13 @@ #include <ctype.h> #include <math.h> #include <stdbool.h> - #include <ncurses.h> #include "llist.h" #define CFNAME ".wavemonrc" -/* + +/** * Minimum screen dimensions. * The number of lines depends on the size requirements of scr_info(). The * number of columns comes from the menubar length (10 items of length 6 @@ -100,6 +100,19 @@ static inline void threshold_action(enum threshold_action action) } /* + * Symbolic names for scan sort order comparison. + */ +enum scan_sort_order { + SO_CHAN, + SO_CHAN_REV, + SO_SIGNAL, + SO_OPEN, + SO_CHAN_SIG, + SO_OPEN_SIG, + SO_OPEN_CH_SI +}; + +/* * Global in-memory representation of current wavemon configuration state */ extern struct wavemon_conf { @@ -124,7 +137,8 @@ extern struct wavemon_conf { override_bounds; /* override autodetection */ /* Enumerated values */ - int lthreshold_action, /* disabled|beep|flash|beep+flash */ + int scan_sort_order, /* channel|signal|open|chan/sig ... */ + lthreshold_action, /* disabled|beep|flash|beep+flash */ hthreshold_action, /* disabled|beep|flash|beep+flash */ startup_scr; /* info|histogram|aplist */ } conf; @@ -257,7 +271,7 @@ static inline int cp_from_scale(float value, const char *cscale, bool reverse) * Wireless interfaces */ extern const char *conf_ifname(void); -extern void conf_get_interface_list(void); +extern void conf_get_interface_list(bool init); extern char **iw_get_interface_list(void); extern void dump_parameters(void); diff --git a/wavemonrc.5 b/wavemonrc.5 index 67dea89..87dc89a 100644 --- a/wavemonrc.5 +++ b/wavemonrc.5 @@ -1,4 +1,4 @@ -.TH wavemonrc 5 "December 2010" Linux "User Manuals" +.TH wavemonrc 5 "March 2012" Linux "User Manuals" .SH NAME $HOME/.wavemonrc \- wavemon configuration file .SH DESCRIPTION @@ -10,7 +10,7 @@ on-screen name is shown in parentheses. .B interface = <ifname> .RS .RE -.R (Interface) +(Interface) .RS Selects the wireless interface to use. .P @@ -18,16 +18,28 @@ Selects the wireless interface to use. .B cisco_mac = (on|off) .RS .RE -.R (Cisco-style MAC addresses) +(Cisco-style MAC addresses) .RS If enabled, display MAC addresses using lower-case hex digits separated by dots rather than colons. .P .RE +.B sort_order = (channel|rev channel|signal|open|chan/sig|open/sig|open/chan/sig) +.RS +.RE +(Scan Sort Order) +.RS +Determines the ordering used in the scan window: (\fIrev\fR) \fIchannel\fR sorts in ascending +(descending) order of channel number, \fIsignal\fR in descending order of signal strength, and +\fIopen\fR in descending order of openness. The combined variants \fIchan/sig\fR and +\fIopen/sig\fR sort first by channel/openness and then by signal strength; their combined +functionality is provided by \fIopen/chan/sig\fR. +.P +.RE .B stat_updates = <n> .RS .RE -.R (Statistics updates) +(Statistics updates) .RS Time interval for polling new statistics (including scan refresh). Range: 10..4000ms. .P @@ -35,7 +47,7 @@ Time interval for polling new statistics (including scan refresh). Range: 10..40 .B lhist_slot_size = <n> .RS .RE -.R (Histogram update cycles) +(Histogram update cycles) .RS Number of samples used per each histogram slot. For example, if the stat_updates interval is 500ms and the histogram slot size is 4, the histogram is moved @@ -45,7 +57,7 @@ one slot further every 2 seconds. Range: 1..64. .B meter_smoothness = <n> .RS .RE -.R (Level meter smoothness) +(Level meter smoothness) .RS Determines the responsiveness of level meters, tracking the moving average rather than following each new sample. The given value specifies the percentage @@ -56,7 +68,7 @@ this option. Range: 0..99%. .B info_updates = <n> .RS .RE -.R (Dynamic info updates) +(Dynamic info updates) .RS Sets refresh rate for dynamic device parameters (e.g. bitrate) and the refresh interval for the Scan window (F3). Range: 1..60s. @@ -65,7 +77,7 @@ refresh interval for the Scan window (F3). Range: 1..60s. .B override_auto_scale = (on|off) .RS .RE -.R (Override scale autodetect) +(Override scale autodetect) .RS Override the auto-scaling of the bar graphs and histogram, allowing you to set your own scales. .P @@ -73,24 +85,24 @@ Override the auto-scaling of the bar graphs and histogram, allowing you to set y .B min_signal_level, max_signal_level = <n> .RS .RE -.R (Minimum signal level, Maximum signal level) +(Minimum signal level, Maximum signal level) .RS -Set the left and right boundaries of the signal level scales. Ranges: -128..-60dBm (minimum) and -59..120dBm (maximum). +Set the left and right boundaries of the signal level scales. Ranges: \-128..\-60dBm (minimum) and \-59..120dBm (maximum). .P .RE .B min_noise_level, max_noise_level = <n> .RS .RE -.R (Minimum noise level, Maximum noise level) +(Minimum noise level, Maximum noise level) .RS -These work similar to the signal boundary settings. Ranges: -128..-60dBm -(minimum) and -60..120dBm (maximum). +These work similar to the signal boundary settings. Ranges: \-128..\-60dBm +(minimum) and \-60..120dBm (maximum). .P .RE .B random = (on|off) .RS .RE -.R (Random signals) +(Random signals) .RS Switches on a fancy random generator for testing. .P @@ -98,7 +110,7 @@ Switches on a fancy random generator for testing. .B lo_threshold_action = (disabled|beep|flash|beep+flash) .RS .RE -.R (Low threshold action) +(Low threshold action) .RS Issue a warning at a given threshold at the lower end of the signal scale. It is meant for alarming you when a signal appears at the receiver. @@ -107,16 +119,16 @@ scale. It is meant for alarming you when a signal appears at the receiver. .B lo_threshold = <n> .RS .RE -.R (Low threshold) +(Low threshold) .RS Sets the threshold value for the 'Low threshold action'. -Range: -120..-60dBm. +Range: \-120..\-60dBm. .P .RE .B hi_threshold_action = (disabled|beep|flash|beep+flash) .RS .RE -.R (High threshold action) +(High threshold action) .RS Analogous to lo_threshold_action, only this time the threshold is at the upper end of the scale and the action is performed when the signal level @@ -128,15 +140,15 @@ will tell you when you should move closer to the base station. .B hi_threshold = <n> .RS .RE -.R (High threshold) +(High threshold) .RS -Sets the threshold for the 'High threshold action'. Range: -59..120dBm. +Sets the threshold for the 'High threshold action'. Range: \-59..120dBm. .P .RE .B startup_screen = (info|histogram|scan window) .RS .RE -.R (Startup screen) +(Startup screen) .RS Which of the screens appears at program startup. .SH "AUTHOR" |