mirror of
https://github.com/vanhoefm/fragattacks.git
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4b9a395e29
Use shorter variables for storing the attribute lengths and group these variables together to allow compiler to pack them more efficiently. This reduces the struct size from 960 bytes to 760 bytes in 64-bit builds. This reduces stack use in number of functions. Signed-off-by: Jouni Malinen <j@w1.fi>
105 lines
3.5 KiB
C
105 lines
3.5 KiB
C
/*
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* Wi-Fi Protected Setup - attribute parsing
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* Copyright (c) 2008-2012, Jouni Malinen <j@w1.fi>
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*
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* This software may be distributed under the terms of the BSD license.
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* See README for more details.
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*/
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#ifndef WPS_ATTR_PARSE_H
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#define WPS_ATTR_PARSE_H
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#include "wps.h"
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struct wps_parse_attr {
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/* fixed length fields */
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const u8 *version; /* 1 octet */
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const u8 *version2; /* 1 octet */
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const u8 *msg_type; /* 1 octet */
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const u8 *enrollee_nonce; /* WPS_NONCE_LEN (16) octets */
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const u8 *registrar_nonce; /* WPS_NONCE_LEN (16) octets */
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const u8 *uuid_r; /* WPS_UUID_LEN (16) octets */
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const u8 *uuid_e; /* WPS_UUID_LEN (16) octets */
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const u8 *auth_type_flags; /* 2 octets */
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const u8 *encr_type_flags; /* 2 octets */
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const u8 *conn_type_flags; /* 1 octet */
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const u8 *config_methods; /* 2 octets */
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const u8 *sel_reg_config_methods; /* 2 octets */
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const u8 *primary_dev_type; /* 8 octets */
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const u8 *rf_bands; /* 1 octet */
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const u8 *assoc_state; /* 2 octets */
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const u8 *config_error; /* 2 octets */
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const u8 *dev_password_id; /* 2 octets */
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const u8 *os_version; /* 4 octets */
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const u8 *wps_state; /* 1 octet */
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const u8 *authenticator; /* WPS_AUTHENTICATOR_LEN (8) octets */
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const u8 *r_hash1; /* WPS_HASH_LEN (32) octets */
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const u8 *r_hash2; /* WPS_HASH_LEN (32) octets */
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const u8 *e_hash1; /* WPS_HASH_LEN (32) octets */
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const u8 *e_hash2; /* WPS_HASH_LEN (32) octets */
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const u8 *r_snonce1; /* WPS_SECRET_NONCE_LEN (16) octets */
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const u8 *r_snonce2; /* WPS_SECRET_NONCE_LEN (16) octets */
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const u8 *e_snonce1; /* WPS_SECRET_NONCE_LEN (16) octets */
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const u8 *e_snonce2; /* WPS_SECRET_NONCE_LEN (16) octets */
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const u8 *key_wrap_auth; /* WPS_KWA_LEN (8) octets */
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const u8 *auth_type; /* 2 octets */
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const u8 *encr_type; /* 2 octets */
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const u8 *network_idx; /* 1 octet */
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const u8 *network_key_idx; /* 1 octet */
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const u8 *mac_addr; /* ETH_ALEN (6) octets */
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const u8 *selected_registrar; /* 1 octet (Bool) */
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const u8 *request_type; /* 1 octet */
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const u8 *response_type; /* 1 octet */
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const u8 *ap_setup_locked; /* 1 octet */
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const u8 *settings_delay_time; /* 1 octet */
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const u8 *network_key_shareable; /* 1 octet (Bool) */
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const u8 *request_to_enroll; /* 1 octet (Bool) */
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const u8 *ap_channel; /* 2 octets */
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const u8 *registrar_configuration_methods; /* 2 octets */
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/* variable length fields */
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const u8 *manufacturer;
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const u8 *model_name;
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const u8 *model_number;
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const u8 *serial_number;
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const u8 *dev_name;
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const u8 *public_key;
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const u8 *encr_settings;
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const u8 *ssid; /* <= 32 octets */
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const u8 *network_key; /* <= 64 octets */
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const u8 *authorized_macs; /* <= 30 octets */
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const u8 *sec_dev_type_list; /* <= 128 octets */
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const u8 *oob_dev_password; /* 38..54 octets */
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u16 manufacturer_len;
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u16 model_name_len;
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u16 model_number_len;
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u16 serial_number_len;
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u16 dev_name_len;
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u16 public_key_len;
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u16 encr_settings_len;
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u16 ssid_len;
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u16 network_key_len;
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u16 authorized_macs_len;
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u16 sec_dev_type_list_len;
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u16 oob_dev_password_len;
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/* attributes that can occur multiple times */
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#define MAX_CRED_COUNT 10
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#define MAX_REQ_DEV_TYPE_COUNT 10
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unsigned int num_cred;
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unsigned int num_req_dev_type;
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unsigned int num_vendor_ext;
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u16 cred_len[MAX_CRED_COUNT];
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u16 vendor_ext_len[MAX_WPS_PARSE_VENDOR_EXT];
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const u8 *cred[MAX_CRED_COUNT];
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const u8 *req_dev_type[MAX_REQ_DEV_TYPE_COUNT];
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const u8 *vendor_ext[MAX_WPS_PARSE_VENDOR_EXT];
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};
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int wps_parse_msg(const struct wpabuf *msg, struct wps_parse_attr *attr);
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#endif /* WPS_ATTR_PARSE_H */
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