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Add test code for fetching the last configured GTK

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This can be useful for some test cases, so allow wpa_supplicant to be
built with special test functionality to expose the current (last
configured) GTK. This is disabled by default and can be enabled by
adding following line into .config:
CFLAGS += -DCONFIG_TESTING_GET_GTK

The GTK can then be fetched with "wpa_cli get gtk".

Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
This commit is contained in:
Jouni Malinen 2011-10-28 14:39:44 +03:00 • committed by Jouni Malinen
parent 576bce9c86
commit fa7ae9501b
3 changed files with 20 additions and 0 deletions

8
wpa_supplicant/ctrl_iface.c
View file

@ -461,6 +461,14 @@ static int wpa_supplicant_ctrl_iface_get(struct wpa_supplicant *wpa_s,
return -1; return -1;
return res; return res;
#endif /* CONFIG_WIFI_DISPLAY */ #endif /* CONFIG_WIFI_DISPLAY */
#ifdef CONFIG_TESTING_GET_GTK
} else if (os_strcmp(cmd, "gtk") == 0) {
if (wpa_s->last_gtk_len == 0)
return -1;
res = wpa_snprintf_hex(buf, buflen, wpa_s->last_gtk,
wpa_s->last_gtk_len);
return res;
#endif /* CONFIG_TESTING_GET_GTK */
} }
if (res < 0 || (unsigned int) res >= buflen) if (res < 0 || (unsigned int) res >= buflen)

5
wpa_supplicant/wpa_supplicant_i.h
View file

@ -708,6 +708,11 @@ struct wpa_supplicant {
u8 wnm_bss_termination_duration[12]; u8 wnm_bss_termination_duration[12];
struct neighbor_report *wnm_neighbor_report_elements; struct neighbor_report *wnm_neighbor_report_elements;
#endif /* CONFIG_WNM */ #endif /* CONFIG_WNM */
#ifdef CONFIG_TESTING_GET_GTK
u8 last_gtk[32];
size_t last_gtk_len;
#endif /* CONFIG_TESTING_GET_GTK */
}; };

7
wpa_supplicant/wpas_glue.c
View file

@ -437,6 +437,13 @@ static int wpa_supplicant_set_key(void *_wpa_s, enum wpa_alg alg,
/* Clear the MIC error counter when setting a new PTK. */ /* Clear the MIC error counter when setting a new PTK. */
wpa_s->mic_errors_seen = 0; wpa_s->mic_errors_seen = 0;
} }
#ifdef CONFIG_TESTING_GET_GTK
if (key_idx > 0 && addr && is_broadcast_ether_addr(addr) &&
alg != WPA_ALG_NONE && key_len <= sizeof(wpa_s->last_gtk)) {
os_memcpy(wpa_s->last_gtk, key, key_len);
wpa_s->last_gtk_len = key_len;
}
#endif /* CONFIG_TESTING_GET_GTK */
return wpa_drv_set_key(wpa_s, alg, addr, key_idx, set_tx, seq, seq_len, return wpa_drv_set_key(wpa_s, alg, addr, key_idx, set_tx, seq, seq_len,
key, key_len); key, key_len);
} }