[patch] receive custom IE in wpa_supplicant

Leonardo Maccari maccari-thisaintpartofmyaddress- at lenst.det.unifi.it
Thu May 26 11:00:49 EDT 2005


On Wed, May 25, 2005 at 04:55:26PM +0200, Leonardo Maccari wrote:
> 
> I was able to make hostapd add a custom IE in beacon frames, I see the IE

if it can be useful to someone, here is the hack.

ciao,
leonardo.

-- 
   Key fingerprint = 3129 C583 F03B 2E73 0115  C040 3489 0185 B592 19FE
 Obviously -thisaintpartofmyaddress- is not part of my real email address 

-------------- next part --------------
Only in ../hostapd-0.3.7-dev/: .config
diff -u ./config.c ../hostapd-0.3.7-dev/config.c
--- ./config.c	2005-01-22 20:43:16.000000000 +0100
+++ ../hostapd-0.3.7-dev/config.c	2005-05-26 16:27:15.000000000 +0200
@@ -66,7 +66,8 @@
 	conf->wpa_group = WPA_CIPHER_TKIP;
 
 	conf->radius_server_auth_port = 1812;
-
+	conf->generic_ie = NULL;
+		
 	return conf;
 }
 
@@ -935,6 +936,8 @@
 		} else if (strcmp(buf, "ctrl_interface") == 0) {
 			free(conf->ctrl_interface);
 			conf->ctrl_interface = strdup(pos);
+		} else if (strcmp(buf, "generic_ie") == 0) {
+			conf->generic_ie = strdup(pos);
 		} else if (strcmp(buf, "ctrl_interface_group") == 0) {
 			struct group *grp;
 			char *endp;
diff -u ./config.h ../hostapd-0.3.7-dev/config.h
--- ./config.h	2005-01-12 02:58:20.000000000 +0100
+++ ../hostapd-0.3.7-dev/config.h	2005-05-26 16:22:11.000000000 +0200
@@ -150,6 +150,7 @@
 	int wpa_gmk_rekey;
 	int rsn_preauth;
 	char *rsn_preauth_interfaces;
+	char * generic_ie;
 
 	char *ctrl_interface; /* directory for UNIX domain sockets */
 	gid_t ctrl_interface_gid;
Only in ./: defconfig
Only in ../hostapd-0.3.7-dev/: hostapd_cli
Only in ./: hostapd.conf
diff -u ./wpa.c ../hostapd-0.3.7-dev/wpa.c
--- ./wpa.c	2005-01-24 04:36:45.000000000 +0100
+++ ../hostapd-0.3.7-dev/wpa.c	2005-05-26 16:40:54.000000000 +0200
@@ -114,6 +114,16 @@
 } __attribute__ ((packed));
 
 
+struct gen_ie_hdr {
+	u8 elem_id; /* WLAN_EID_GENERIC */
+	u8 len;
+} __attribute__ ((packed));
+
+
+
+
+
+
 /* RSN IE version 1
  * 0x01 0x00 (version; little endian)
  * (all following fields are optional:)
@@ -135,6 +145,26 @@
 	u16 version;
 } __attribute__ ((packed));
 
+ 
+int wpa_gen_ip_address_ie(struct hostapd_data *hapd, u8 * buf)
+{
+
+	struct gen_ie_hdr *hdr;
+	u8 *pos;
+	int ie_len;
+
+	ie_len = strlen(hapd->conf->generic_ie);
+
+	hdr = (struct gen_ie_hdr *) buf;
+	hdr->elem_id = WLAN_EID_GENERIC;
+	hdr->len = ie_len;
+	pos = (u8*) (hdr + 1);	
+
+	memcpy(pos, (u8*) hapd->conf->generic_ie, strlen(hapd->conf->generic_ie));
+
+	return ie_len;
+}
+
 
 static int wpa_write_wpa_ie(struct hostapd_data *hapd, u8 *buf, size_t len)
 {
@@ -647,8 +677,24 @@
 		printf("Could not generate WPA IE.\n");
 		return -1;
 	}
+	if(hapd->conf->generic_ie)
+	{
+		u8 * buffer;
+		u8 * ptr;
+		buffer = malloc(hapd->wpa_ie_len + strlen(hapd->conf->generic_ie) + 2);
+		memcpy(buffer, hapd->wpa_ie,hapd->wpa_ie_len);
+		ptr = buffer + hapd->wpa_ie_len;
+		wpa_gen_ip_address_ie(hapd, ptr);
+	
+		if (hostapd_set_generic_elem(hapd, buffer,hapd->wpa_ie_len + strlen(hapd->conf->generic_ie) + 2 )) {
+			printf("Failed to configure WPA IE for the kernel driver.\n");
+		return -1;
+		}
+		printf("\n\nDEBUG adding duplicate IE\n\n");
+		free(buffer);
 
-	if (hostapd_set_generic_elem(hapd, hapd->wpa_ie, hapd->wpa_ie_len)) {
+	}else if (hostapd_set_generic_elem(hapd, hapd->wpa_ie, hapd->wpa_ie_len)) {
+ 
 		printf("Failed to configure WPA IE for the kernel driver.\n");
 		return -1;
 	}


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