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EAP-SIM/EAP-AKA peer: Support realms according to 3GPP TS 23.003

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If the identity is derived from the SIM, use a realm according
to 3GPP TS 23.003.

Signed-hostap: Simon Baatz <gmbnomis@gmail.com>
This commit is contained in:
Simon Baatz 2012-01-22 21:11:24 +02:00 committed by Jouni Malinen
parent 4646ee67c0
commit 2d7d0ab307
1 changed files with 53 additions and 1 deletions
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54
src/eap_peer/eap.c
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@ -878,6 +878,57 @@ static void eap_sm_processIdentity(struct eap_sm *sm, const struct wpabuf *req)
#ifdef PCSC_FUNCS
static int eap_sm_append_3gpp_realm(struct eap_sm *sm,
struct eap_peer_config *conf)
{
const char *realm_3gpp = "@wlan.mnc000.mcc000.3gppnetwork.org";
u8 *full_id = NULL;
size_t full_id_len = 0;
int mnc_len;
full_id = os_malloc(conf->identity_len + os_strlen(realm_3gpp));
if (full_id == NULL) {
wpa_printf(MSG_WARNING, "Failed to allocate buffer for "
"3GPP realm");
return -1;
}
os_memcpy(full_id, conf->identity, conf->identity_len);
os_memcpy(full_id + conf->identity_len,
realm_3gpp, os_strlen(realm_3gpp));
full_id_len = conf->identity_len + os_strlen(realm_3gpp);
/* MCC */
full_id[conf->identity_len + 16] = full_id[1];
full_id[conf->identity_len + 17] = full_id[2];
full_id[conf->identity_len + 18] = full_id[3];
/* MNC (2 or 3 digits) */
mnc_len = scard_get_mnc_len(sm->scard_ctx);
if (mnc_len < 0) {
wpa_printf(MSG_INFO, "Failed to get MNC length from (U)SIM "
"assuming 3");
mnc_len = 3;
}
if (mnc_len == 2) {
full_id[conf->identity_len + 10] = full_id[4];
full_id[conf->identity_len + 11] = full_id[5];
} else if (mnc_len == 3) {
full_id[conf->identity_len + 9] = full_id[4];
full_id[conf->identity_len + 10] = full_id[5];
full_id[conf->identity_len + 11] = full_id[6];
}
os_free(conf->identity);
conf->identity = full_id;
conf->identity_len = full_id_len;
return 0;
}
static int eap_sm_imsi_identity(struct eap_sm *sm,
struct eap_peer_config *conf)
{
@ -921,8 +972,9 @@ static int eap_sm_imsi_identity(struct eap_sm *sm,
os_memcpy(conf->identity + 1, imsi, imsi_len);
conf->identity_len = 1 + imsi_len;
return 0;
return eap_sm_append_3gpp_realm(sm, conf);
}
#endif /* PCSC_FUNCS */