change wrt54g packet source to automatically switch to monitor mode without wl, add channel hopping support

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@1548 3c298f89-4303-0410-b956-a3cf2f4a3e73

3 files changed, 115 insertions, 2 deletions

diff --git a/openwrt/package/kismet/files/kismet.conf b/openwrt/package/kismet/files/kismet.conf
index 1f750a60c9..a417d2885b 100644
--- a/openwrt/package/kismet/files/kismet.conf
+++ b/openwrt/package/kismet/files/kismet.conf
@@ -18,7 +18,9 @@ suiduser=nobody
 # The initial channel is optional, if hopping is not enabled it can be used
 # to set the channel the interface listens on.
 # YOU MUST CHANGE THIS TO BE THE SOURCE YOU WANT TO USE
-source=wrt54g,prism0,wireless
+source=wrt54g,eth1,wireless
+# For v1 hardware uncomment this:
+# source=wrt54g,eth2,wireless
 
 # Comma-separated list of sources to enable.  This is only needed if you defined
 # multiple sources and only want to enable some of them.  By default, all defined
diff --git a/openwrt/package/kismet/files/kismet_drone.conf b/openwrt/package/kismet/files/kismet_drone.conf
index a485471339..901b5b83e1 100644
--- a/openwrt/package/kismet/files/kismet_drone.conf
+++ b/openwrt/package/kismet/files/kismet_drone.conf
@@ -48,7 +48,9 @@ maxclients=5
 # enablesources line to enable them.  For example:
 # source=prism2,wlan0,prism
 # source=cisco,eth0,cisco
-source=wrt54g,prism0,wireless
+source=wrt54g,eth1,wireless
+# For v1 hardware uncomment this:
+# source=wrt54g,eth2,wireless
 
 # Comma-separated list of sources to enable.  This is only needed if you wish 
 # to selectively enable multiple sources.
diff --git a/openwrt/package/kismet/patches/130-wrt54g_source.patch b/openwrt/package/kismet/patches/130-wrt54g_source.patch
new file mode 100644
index 0000000000..9192224c6e
--- /dev/null
+++ b/openwrt/package/kismet/patches/130-wrt54g_source.patch
@@ -0,0 +1,109 @@
+diff -urN kismet.old/kis_packsources.cc kismet.dev/kis_packsources.cc
+--- kismet.old/kis_packsources.cc	2005-07-25 12:18:47.230369000 +0200
++++ kismet.dev/kis_packsources.cc	2005-07-25 12:54:44.654390736 +0200
+@@ -165,7 +165,7 @@
+                                        chancontrol_wlanng_avs, 1);
+     sourcetracker->RegisterPacketsource("wrt54g", 1, "na", 0,
+                                         pcapsource_wrt54g_registrant,
+-                                        monitor_wrt54g, NULL, NULL, 0);
++                                        monitor_wrt54g, NULL, chancontrol_wext, 1);
+ #else
+     REG_EMPTY_CARD(sourcetracker, "wlanng");
+     REG_EMPTY_CARD(sourcetracker, "wlanng_avs");
+diff -urN kismet.old/packetsourcetracker.cc kismet.dev/packetsourcetracker.cc
+--- kismet.old/packetsourcetracker.cc	2005-04-03 07:33:42.000000000 +0200
++++ kismet.dev/packetsourcetracker.cc	2005-07-25 13:29:45.698983408 +0200
+@@ -978,6 +978,7 @@
+                     (meta_packsources[chanpak.meta_num]->device.c_str(), 
+                      chanpak.channel, errstr, 
+                      (void *) (meta_packsources[chanpak.meta_num]->capsource)) < 0) {
++#if 0
+ 
+ 					meta_packsources[chanpak.meta_num]->consec_errors++;
+ 
+@@ -999,6 +1000,7 @@
+ 																	 CHANFLAG_FATAL));
+ 						continue;
+ 					}
++#endif
+                 } else {
+ 					// Otherwise reset the error count
+ 					meta_packsources[chanpak.meta_num]->consec_errors = 0;
+diff -urN kismet.old/pcapsource.cc kismet.dev/pcapsource.cc
+--- kismet.old/pcapsource.cc	2005-07-25 12:18:47.234368000 +0200
++++ kismet.dev/pcapsource.cc	2005-07-25 12:51:19.426590104 +0200
+@@ -140,6 +140,48 @@
+     return 1;
+ }
+ 
++
++// Open a source
++int PcapSourceWrt54g::OpenSource() {
++    channel = 0;
++
++    errstr[0] = '\0';
++
++    char *unconst = strdup("prism0");
++
++    pd = pcap_open_live(unconst, MAX_PACKET_LEN, 1, 1000, errstr);
++
++    free(unconst);
++
++    if (strlen(errstr) > 0)
++        return -1; // Error is already in errstr
++
++    paused = 0;
++
++    errstr[0] = '\0';
++
++    num_packets = 0;
++
++    if (DatalinkType() < 0)
++        return -1;
++
++#ifdef HAVE_PCAP_NONBLOCK
++    pcap_setnonblock(pd, 1, errstr);
++#elif !defined(SYS_OPENBSD)
++    // do something clever  (Thanks to Guy Harris for suggesting this).
++    int save_mode = fcntl(pcap_get_selectable_fd(pd), F_GETFL, 0);
++    if (fcntl(pcap_get_selectable_fd(pd), F_SETFL, save_mode | O_NONBLOCK) < 0) {
++        snprintf(errstr, 1024, "fcntl failed, errno %d (%s)",
++                 errno, strerror(errno));
++    }
++#endif
++
++    if (strlen(errstr) > 0)
++        return -1; // Ditto
++    
++    return 1;
++}
++
+ // Datalink, override as appropriate
+ carrier_type PcapSource::IEEE80211Carrier() {
+     int ch = FetchChannel();
+@@ -1609,7 +1651,7 @@
+ int monitor_wrt54g(const char *in_dev, int initch, char *in_err, void **in_if, void *in_ext) {
+     char cmdline[2048];
+ 
+-    snprintf(cmdline, 2048, "/usr/sbin/wl monitor 1");
++    snprintf(cmdline, 2048, "/usr/sbin/iwpriv %s set_monitor 1", in_dev);
+     if (RunSysCmd(cmdline) < 0) {
+         snprintf(in_err, 1024, "Unable to execute '%s'", cmdline);
+         return -1;
+diff -urN kismet.old/pcapsource.h kismet.dev/pcapsource.h
+--- kismet.old/pcapsource.h	2005-04-03 07:33:42.000000000 +0200
++++ kismet.dev/pcapsource.h	2005-07-25 12:49:22.089428064 +0200
+@@ -250,11 +250,13 @@
+ 
+ // Override packet fetching logic on this one to discard jumbo corrupt packets
+ // that it likes to generate
++// Override OpenSource() to use prism0 as pcap device
+ class PcapSourceWrt54g : public PcapSource {
+ public:
+     PcapSourceWrt54g(string in_name, string in_dev) : PcapSource(in_name, in_dev) { 
+         fcsbytes = 4;
+     }
++    int OpenSource();
+     int FetchPacket(kis_packet *packet, uint8_t *data, uint8_t *moddata);
+ protected:
+     carrier_type IEEE80211Carrier();