[PATCH] Add blacklist command

Dmitry Shmidt dimitrysh at google.com
Wed Mar 16 17:32:18 EDT 2011


This command allows to network manager to avoid AP

Signed-off-by: Dmitry Shmidt <dimitrysh at google.com>
---
 wpa_supplicant/ctrl_iface.c |   62 +++++++++++++++++++++++++++++++++++++++++++
 1 files changed, 62 insertions(+), 0 deletions(-)

diff --git a/wpa_supplicant/ctrl_iface.c b/wpa_supplicant/ctrl_iface.c
index 9f06115..3c03680 100644
--- a/wpa_supplicant/ctrl_iface.c
+++ b/wpa_supplicant/ctrl_iface.c
@@ -38,6 +38,7 @@
 #include "bss.h"
 #include "scan.h"
 #include "ctrl_iface.h"
+#include "blacklist.h"

 extern struct wpa_driver_ops *wpa_drivers[];

@@ -899,6 +900,55 @@ static int wpa_supplicant_ctrl_iface_bssid(struct
wpa_supplicant *wpa_s,
 }


+static int wpa_supplicant_ctrl_iface_blacklist(struct wpa_supplicant *wpa_s,
+					char *cmd, char *buf, size_t buflen)
+{
+	u8 bssid[ETH_ALEN];
+	struct wpa_blacklist *e;
+	char *pos, *end;
+	int ret;
+
+	/* cmd: "BLACKLIST [<BSSID>]" */
+	if (*cmd == '\0') {
+		pos = buf;
+		end = buf + buflen;
+		e = wpa_s->blacklist;
+		while (e) {
+			ret = os_snprintf(pos, end-pos, MACSTR"\n", MAC2STR(e->bssid));
+			if ((ret < 0) || (ret >= end - pos))
+				return pos - buf;
+			pos += ret;
+			e = e->next;
+		}
+		return pos - buf;
+	}
+
+	cmd++;
+	if (os_strncmp(cmd, "clear", 5) == 0) {
+		wpa_blacklist_clear(wpa_s);
+		os_memcpy(buf, "OK\n", 3);
+		return 3;
+	}
+
+	wpa_printf(MSG_DEBUG, "CTRL_IFACE: BLACKLIST bssid='%s'", cmd);
+	if (hwaddr_aton(cmd, bssid)) {
+		wpa_printf(MSG_DEBUG ,"CTRL_IFACE: invalid BSSID '%s'", cmd);
+		return -1;
+	}
+
+	/* Add the BSSID twice, so its count will be 2, causing it to be
+	   skipped when processing scan results. */
+	ret = wpa_blacklist_add(wpa_s, bssid);
+	if (ret != 0)
+		return -1;
+	ret = wpa_blacklist_add(wpa_s, bssid);
+	if (ret != 0)
+		return -1;
+	os_memcpy(buf, "OK\n", 3);
+	return 3;
+}
+
+
 static int wpa_supplicant_ctrl_iface_list_networks(
 	struct wpa_supplicant *wpa_s, char *buf, size_t buflen)
 {
@@ -3113,6 +3163,18 @@ char * wpa_supplicant_ctrl_iface_process(struct
wpa_supplicant *wpa_s,
 	} else if (os_strncmp(buf, "BSSID ", 6) == 0) {
 		if (wpa_supplicant_ctrl_iface_bssid(wpa_s, buf + 6))
 			reply_len = -1;
+	} else if (os_strncmp(buf, "BLACKLIST", 9) == 0) {
+		reply_len = wpa_supplicant_ctrl_iface_blacklist(wpa_s, buf + 9,
+							reply, reply_size);
+		if ((os_strlen(buf) > 10) && (reply_len == 3)) {
+			struct wpa_blacklist *bl = wpa_s->blacklist;
+			if (os_strncmp(buf + 10, "clear", 5) == 0 ||
+			    ((bl != NULL) && (os_memcmp(bl->bssid, wpa_s->bssid, ETH_ALEN) == 0))) {
+				wpa_s->disconnected = 0;
+				wpa_s->reassociate = 1;
+				wpa_supplicant_req_scan(wpa_s, 0, 0);
+			}
+		}
 	} else if (os_strcmp(buf, "LIST_NETWORKS") == 0) {
 		reply_len = wpa_supplicant_ctrl_iface_list_networks(
 			wpa_s, reply, reply_size);
-- 
1.7.3.1


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