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monitor: Print EAPoL packet headers

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Previously we only printed EAPoL packets that were of type 'Key'.  With
this change, iwmon now prints all EAPoL packet headers.
This commit is contained in:
Denis Kenzior 2016-08-05 17:12:12 -05:00
parent 6ffbfeb897
commit 296eda2ee8
1 changed files with 79 additions and 48 deletions
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127
monitor/nlmon.c
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@ -3585,6 +3585,53 @@ static void print_attributes(int indent, const struct attr_entry *table,
} }
} }
static void print_eapol_key(const void *data, uint32_t size)
{
const struct eapol_key *ek = eapol_key_validate(data, size);
if (!ek)
return;
print_attr(1, "Descriptor Type: %u", ek->descriptor_type);
print_attr(1, "Key MIC: %s", ek->key_mic ? "true" : "false");
print_attr(1, "Secure: %s", ek->secure ? "true" : "false");
print_attr(1, "Error: %s", ek->error ? "true" : "false");
print_attr(1, "Request: %s", ek->request ? "true" : "false");
print_attr(1, "Encrypted Key Data: %s",
ek->encrypted_key_data ? "true" : "false");
print_attr(1, "SMK Message: %s", ek->smk_message ? "true" : "false");
print_attr(1, "Key Descriptor Version: %d (%02x)",
ek->key_descriptor_version,
ek->key_descriptor_version);
print_attr(1, "Key Type: %s", ek->key_type ? "true" : "false");
if (ek->descriptor_type == EAPOL_DESCRIPTOR_TYPE_WPA)
print_attr(1, "Key Id: %u", ek->wpa_key_id);
print_attr(1, "Install: %s", ek->install ? "true" : "false");
print_attr(1, "Key ACK: %s", ek->key_ack ? "true" : "false");
print_attr(1, "Key Length: %d", L_BE16_TO_CPU(ek->key_length));
print_attr(1, "Key Replay Counter: %ld",
L_BE64_TO_CPU(ek->key_replay_counter));
print_attr(1, "Key NONCE");
print_hexdump(2, ek->key_nonce, 32);
print_attr(1, "Key IV");
print_hexdump(2, ek->eapol_key_iv, 16);
print_attr(1, "Key RSC ");
print_hexdump(2, ek->key_rsc, 8);
print_attr(1, "Key MIC Data");
print_hexdump(2, ek->key_mic_data, 16);
if (ek->encrypted_key_data) {
print_attr(1, "Key Data: len %d",
L_BE16_TO_CPU(ek->key_data_len));
print_hexdump(2, ek->key_data, L_BE16_TO_CPU(ek->key_data_len));
return;
}
print_ie(1, "Key Data", ek->key_data, L_BE16_TO_CPU(ek->key_data_len));
}
static void netlink_str(char *str, size_t size, static void netlink_str(char *str, size_t size,
uint16_t type, uint16_t flags, uint32_t len) uint16_t type, uint16_t flags, uint32_t len)
{ {
@ -4718,9 +4765,9 @@ void nlmon_print_pae(struct nlmon *nlmon, const struct timeval *tv,
uint8_t type, int index, uint8_t type, int index,
const void *data, uint32_t size) const void *data, uint32_t size)
{ {
const struct eapol_key *ek;
char extra_str[16]; char extra_str[16];
const char *str; const char *str;
const struct eapol_header *eh;
update_time_offset(tv); update_time_offset(tv);
@ -4737,27 +4784,28 @@ void nlmon_print_pae(struct nlmon *nlmon, const struct timeval *tv,
print_attr(0, "EAPoL: len %u", size); print_attr(0, "EAPoL: len %u", size);
print_hexdump(0, data, size); print_hexdump(0, data, size);
ek = eapol_key_validate(data, size); eh = data;
if (!ek)
return;
switch (ek->header.protocol_version) { switch (eh->protocol_version) {
case 0x01: case 0x01:
str = "802.11X-2001"; str = "802.1X-2001";
break; break;
case 0x02: case 0x02:
str = "802.11X-2004"; str = "802.1X-2004";
break;
case 0x03:
str = "802.1X-2010";
break; break;
default: default:
str = "Reserved"; str = "Reserved";
break; break;
} }
print_attr(1, "Version: %u (%s)", ek->header.protocol_version, str); print_attr(1, "Protocol Version: %u (%s)", eh->protocol_version, str);
switch (ek->header.packet_type) { switch (eh->packet_type) {
case 0x00: case 0x00:
str = "Packet"; str = "EAP";
break; break;
case 0x01: case 0x01:
str = "Start"; str = "Start";
@ -4768,51 +4816,34 @@ void nlmon_print_pae(struct nlmon *nlmon, const struct timeval *tv,
case 0x03: case 0x03:
str = "Key"; str = "Key";
break; break;
case 0x04:
str = "Encapsulated-ASF-Alert";
break;
case 0x05:
str = "MKA";
break;
case 0x06:
str = "Announcement (Generic)";
break;
case 0x07:
str = "Announcement (Specific)";
break;
case 0x08:
str = "Announcement-Req";
break;
default: default:
str = "Reserved"; str = "Reserved";
break; break;
} }
print_attr(1, "Type: %u (%s)", ek->header.packet_type, str); print_attr(1, "Type: %u (%s)", eh->packet_type, str);
print_attr(1, "Length: %d", L_BE16_TO_CPU(ek->header.packet_len)); print_attr(1, "Length: %d", L_BE16_TO_CPU(eh->packet_len));
print_attr(1, "Descriptor Type: %u", ek->descriptor_type);
print_attr(1, "Key MIC: %s", ek->key_mic ? "true" : "false");
print_attr(1, "Secure: %s", ek->secure ? "true" : "false");
print_attr(1, "Error: %s", ek->error ? "true" : "false");
print_attr(1, "Request: %s", ek->request ? "true" : "false");
print_attr(1, "Encrypted Key Data: %s",
ek->encrypted_key_data ? "true" : "false");
print_attr(1, "SMK Message: %s", ek->smk_message ? "true" : "false");
print_attr(1, "Key Descriptor Version: %d (%02x)",
ek->key_descriptor_version,
ek->key_descriptor_version);
print_attr(1, "Key Type: %s", ek->key_type ? "true" : "false");
if (ek->descriptor_type == EAPOL_DESCRIPTOR_TYPE_WPA) switch (eh->packet_type) {
print_attr(1, "Key Id: %u", ek->wpa_key_id); case 0x03:
print_eapol_key(data, size);
print_attr(1, "Install: %s", ek->install ? "true" : "false"); break;
print_attr(1, "Key ACK: %s", ek->key_ack ? "true" : "false");
print_attr(1, "Key Length: %d", L_BE16_TO_CPU(ek->key_length));
print_attr(1, "Key Replay Counter: %ld",
L_BE64_TO_CPU(ek->key_replay_counter));
print_attr(1, "Key NONCE");
print_hexdump(2, ek->key_nonce, 32);
print_attr(1, "Key IV");
print_hexdump(2, ek->eapol_key_iv, 16);
print_attr(1, "Key RSC ");
print_hexdump(2, ek->key_rsc, 8);
print_attr(1, "Key MIC Data");
print_hexdump(2, ek->key_mic_data, 16);
if (ek->encrypted_key_data) {
print_attr(1, "Key Data: len %d",
L_BE16_TO_CPU(ek->key_data_len));
print_hexdump(2, ek->key_data, L_BE16_TO_CPU(ek->key_data_len));
return;
} }
print_ie(1, "Key Data", ek->key_data, L_BE16_TO_CPU(ek->key_data_len));
} }
static bool pae_receive(struct l_io *io, void *user_data) static bool pae_receive(struct l_io *io, void *user_data)