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DPP2: Protocol exchange over TCP using Controller/Relay 

Add initial implementation of DPP-over-TCP. This adds the general TCP
encapsulation routines into the shared src/common/dpp.c implementation.
That functionality will be exposed through hostapd and wpa_supplicant in
the following commits.

Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
This commit is contained in:
Jouni Malinen 2019-03-24 22:17:49 +02:00 committed by Jouni Malinen
parent 9ffec2e854
commit 88a78bdde4
2 changed files with 1391 additions and 0 deletions
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1359
src/common/dpp.c
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32
src/common/dpp.h
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@ -18,9 +18,11 @@
#include "crypto/sha256.h"
struct crypto_ecdh;
struct hostapd_ip_addr;
struct dpp_global;
#define DPP_HDR_LEN (4 + 2) /* OUI, OUI Type, Crypto Suite, DPP frame type */
#define DPP_TCP_PORT 7871
enum dpp_public_action_frame_type {
DPP_PA_AUTHENTICATION_REQ = 0,
@ -259,6 +261,22 @@ struct dpp_introduction {
size_t pmk_len;
};
struct dpp_relay_config {
const struct hostapd_ip_addr *ipaddr;
const u8 *pkhash;
void *cb_ctx;
void (*tx)(void *ctx, const u8 *addr, unsigned int freq, const u8 *msg,
size_t len);
void (*gas_resp_tx)(void *ctx, const u8 *addr, u8 dialog_token, int prot,
struct wpabuf *buf);
};
struct dpp_controller_config {
const char *configurator_params;
int tcp_port;
};
#ifdef CONFIG_TESTING_OPTIONS
enum dpp_test_behavior {
DPP_TEST_DISABLED = 0,
@ -497,9 +515,23 @@ int dpp_configurator_add(struct dpp_global *dpp, const char *cmd);
int dpp_configurator_remove(struct dpp_global *dpp, const char *id);
int dpp_configurator_get_key_id(struct dpp_global *dpp, unsigned int id,
char *buf, size_t buflen);
int dpp_relay_add_controller(struct dpp_global *dpp,
struct dpp_relay_config *config);
int dpp_relay_rx_action(struct dpp_global *dpp, const u8 *src, const u8 *hdr,
const u8 *buf, size_t len, unsigned int freq,
const u8 *i_bootstrap, const u8 *r_bootstrap);
int dpp_relay_rx_gas_req(struct dpp_global *dpp, const u8 *src, const u8 *data,
size_t data_len);
int dpp_controller_start(struct dpp_global *dpp,
struct dpp_controller_config *config);
void dpp_controller_stop(struct dpp_global *dpp);
int dpp_tcp_init(struct dpp_global *dpp, struct dpp_authentication *auth,
const struct hostapd_ip_addr *addr, int port);
struct dpp_global_config {
void *msg_ctx;
void *cb_ctx;
int (*process_conf_obj)(void *ctx, struct dpp_authentication *auth);
};
struct dpp_global * dpp_global_init(struct dpp_global_config *config);