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mpdu: Validate ATIM mpdu subtype

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ATIM management frames have an empty body.
This commit is contained in:
Tomasz Bursztyka 2015-01-21 13:36:39 +02:00 committed by Denis Kenzior
parent c3aef948db
commit e106033fce
2 changed files with 9 additions and 0 deletions
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8
src/mpdu.c
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@ -48,6 +48,12 @@ static bool validate_mgmt_header(const struct mpdu *mpdu, int len, int *offset)
return true; return true;
} }
static bool validate_atim_mgmt_mpdu(const struct mpdu *mpdu,
int len, int *offset)
{
return *offset == len;
}
static bool validate_authentication_mgmt_mpdu(const struct mpdu *mpdu, static bool validate_authentication_mgmt_mpdu(const struct mpdu *mpdu,
int len, int *offset) int len, int *offset)
{ {
@ -95,6 +101,8 @@ static bool validate_mgmt_mpdu(const struct mpdu *mpdu, int len, int *offset)
return false; return false;
switch (mpdu->fc.subtype) { switch (mpdu->fc.subtype) {
case MPDU_MANAGEMENT_SUBTYPE_ATIM:
return validate_atim_mgmt_mpdu(mpdu, len, offset);
case MPDU_MANAGEMENT_SUBTYPE_AUTHENTICATION: case MPDU_MANAGEMENT_SUBTYPE_AUTHENTICATION:
return validate_authentication_mgmt_mpdu(mpdu, len, offset); return validate_authentication_mgmt_mpdu(mpdu, len, offset);
case MPDU_MANAGEMENT_SUBTYPE_DEAUTHENTICATION: case MPDU_MANAGEMENT_SUBTYPE_DEAUTHENTICATION:

1
src/mpdu.h
View File

@ -32,6 +32,7 @@ enum mpdu_type {
/* 802.11, Table 8-1 "Valid type and subtype combinations" */ /* 802.11, Table 8-1 "Valid type and subtype combinations" */
enum mpdu_management_subtype { enum mpdu_management_subtype {
MPDU_MANAGEMENT_SUBTYPE_ATIM = 0x9,
MPDU_MANAGEMENT_SUBTYPE_AUTHENTICATION = 0xB, MPDU_MANAGEMENT_SUBTYPE_AUTHENTICATION = 0xB,
MPDU_MANAGEMENT_SUBTYPE_DEAUTHENTICATION = 0xC, MPDU_MANAGEMENT_SUBTYPE_DEAUTHENTICATION = 0xC,
}; };