p2putil: Parsers for P2P action frames
Add parsers for P2P-related Action frames and Public Action frames.
This commit is contained in:
Andrew Zaborowski
Denis Kenzior
parent
81d17b3d43
commit
67f91605eb
521
src/p2putil.c
521
src/p2putil.c
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@ -899,6 +899,527 @@ int p2p_parse_disassociation(const uint8_t *pdu, size_t len,
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return 0;
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}
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#define WSC_REQUIRED(attr, out) \
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WSC_ATTR_ ## attr, WSC_ATTR_FLAG_REQUIRED, out
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#define WSC_OPTIONAL(attr, out) \
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WSC_ATTR_ ## attr, 0, out
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/* Section 4.2.9.2 */
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int p2p_parse_go_negotiation_req(const uint8_t *pdu, size_t len,
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struct p2p_go_negotiation_req *out)
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{
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struct p2p_go_negotiation_req d = {};
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int r;
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struct p2p_go_intent_attr go_intent;
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uint8_t *wsc_data;
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ssize_t wsc_len;
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uint8_t wsc_version;
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if (len < 1)
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return -EINVAL;
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d.dialog_token = pdu[0];
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if (d.dialog_token == 0)
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return -EINVAL;
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r = p2p_parse_attrs(pdu + 1, len - 1,
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REQUIRED(P2P_CAPABILITY, &d.capability),
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REQUIRED(GO_INTENT, &go_intent),
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REQUIRED(CONFIGURATION_TIMEOUT, &d.config_timeout),
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REQUIRED(LISTEN_CHANNEL, &d.listen_channel),
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OPTIONAL(EXTENDED_LISTEN_TIMING,
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&d.listen_availability),
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REQUIRED(INTENDED_P2P_INTERFACE_ADDR,
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&d.intended_interface_addr),
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REQUIRED(CHANNEL_LIST, &d.channel_list),
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REQUIRED(P2P_DEVICE_INFO, &d.device_info),
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REQUIRED(OPERATING_CHANNEL, &d.operating_channel),
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-1);
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if (r < 0)
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goto error;
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wsc_data = ie_tlv_extract_wsc_payload(pdu + 1, len - 1, &wsc_len);
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if (!wsc_data) {
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r = wsc_len;
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goto error;
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}
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r = wsc_parse_attrs(wsc_data, wsc_len, NULL, NULL, 0, NULL,
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WSC_REQUIRED(VERSION, &wsc_version),
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WSC_REQUIRED(DEVICE_PASSWORD_ID, &d.device_password_id),
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WSC_ATTR_INVALID);
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l_free(wsc_data);
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if (r < 0)
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goto error;
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d.go_intent = go_intent.intent;
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d.go_tie_breaker = go_intent.tie_breaker;
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memcpy(out, &d, sizeof(d));
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return 0;
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error:
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p2p_free_go_negotiation_req(&d);
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return r;
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}
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/* Section 4.2.9.3 */
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int p2p_parse_go_negotiation_resp(const uint8_t *pdu, size_t len,
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struct p2p_go_negotiation_resp *out)
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{
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struct p2p_go_negotiation_resp d = {};
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int r;
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struct p2p_go_intent_attr go_intent;
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uint8_t *wsc_data;
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ssize_t wsc_len;
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uint8_t wsc_version;
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if (len < 1)
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return -EINVAL;
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d.dialog_token = pdu[0];
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if (d.dialog_token == 0)
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return -EINVAL;
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r = p2p_parse_attrs(pdu + 1, len - 1,
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REQUIRED(STATUS, &d.status),
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REQUIRED(P2P_CAPABILITY, &d.capability),
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REQUIRED(GO_INTENT, &go_intent),
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REQUIRED(CONFIGURATION_TIMEOUT, &d.config_timeout),
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OPTIONAL(OPERATING_CHANNEL, &d.operating_channel),
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REQUIRED(INTENDED_P2P_INTERFACE_ADDR,
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&d.intended_interface_addr),
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REQUIRED(CHANNEL_LIST, &d.channel_list),
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REQUIRED(P2P_DEVICE_INFO, &d.device_info),
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OPTIONAL(P2P_GROUP_ID, &d.group_id),
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-1);
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if (r < 0)
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goto error;
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wsc_data = ie_tlv_extract_wsc_payload(pdu + 1, len - 1, &wsc_len);
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if (!wsc_data) {
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r = wsc_len;
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goto error;
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}
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r = wsc_parse_attrs(wsc_data, wsc_len, NULL, NULL, 0, NULL,
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WSC_REQUIRED(VERSION, &wsc_version),
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WSC_REQUIRED(DEVICE_PASSWORD_ID, &d.device_password_id),
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WSC_ATTR_INVALID);
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l_free(wsc_data);
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if (r < 0)
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goto error;
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d.go_intent = go_intent.intent;
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d.go_tie_breaker = go_intent.tie_breaker;
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memcpy(out, &d, sizeof(d));
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return 0;
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error:
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p2p_free_go_negotiation_resp(&d);
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return r;
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}
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/* Section 4.2.9.4 */
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int p2p_parse_go_negotiation_confirmation(const uint8_t *pdu, size_t len,
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struct p2p_go_negotiation_confirmation *out)
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{
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struct p2p_go_negotiation_confirmation d = {};
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int r;
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if (len < 1)
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return -EINVAL;
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d.dialog_token = pdu[0];
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if (d.dialog_token == 0)
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return -EINVAL;
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r = p2p_parse_attrs(pdu + 1, len - 1,
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REQUIRED(STATUS, &d.status),
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REQUIRED(P2P_CAPABILITY, &d.capability),
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REQUIRED(OPERATING_CHANNEL, &d.operating_channel),
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REQUIRED(CHANNEL_LIST, &d.channel_list),
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OPTIONAL(P2P_GROUP_ID, &d.group_id),
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-1);
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if (r >= 0)
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memcpy(out, &d, sizeof(d));
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else
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p2p_free_go_negotiation_confirmation(&d);
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return r;
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}
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/* Section 4.2.9.5 */
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int p2p_parse_invitation_req(const uint8_t *pdu, size_t len,
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struct p2p_invitation_req *out)
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{
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struct p2p_invitation_req d = {};
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int r;
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uint8_t *wsc_data;
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ssize_t wsc_len;
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bool wsc_version2;
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if (len < 1)
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return -EINVAL;
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d.dialog_token = pdu[0];
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if (d.dialog_token == 0)
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return -EINVAL;
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r = p2p_parse_attrs(pdu + 1, len - 1,
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REQUIRED(CONFIGURATION_TIMEOUT, &d.config_timeout),
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REQUIRED(INVITATION_FLAGS,
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&d.reinvoke_persistent_group),
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OPTIONAL(OPERATING_CHANNEL, &d.operating_channel),
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OPTIONAL(P2P_GROUP_BSSID, &d.group_bssid),
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REQUIRED(CHANNEL_LIST, &d.channel_list),
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REQUIRED(P2P_GROUP_ID, &d.group_id),
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REQUIRED(P2P_DEVICE_INFO, &d.device_info),
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-1);
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if (r < 0)
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goto done;
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/* A WSC IE is optional */
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wsc_data = ie_tlv_extract_wsc_payload(pdu + 1, len - 1, &wsc_len);
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if (!wsc_data)
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goto done;
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r = wsc_parse_attrs(wsc_data, wsc_len, &wsc_version2, NULL, 0, NULL,
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WSC_REQUIRED(DEVICE_PASSWORD_ID, &d.device_password_id),
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WSC_ATTR_INVALID);
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l_free(wsc_data);
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if (r >= 0 && !wsc_version2)
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r = -EINVAL;
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done:
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if (r >= 0)
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memcpy(out, &d, sizeof(d));
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else
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p2p_free_invitation_req(&d);
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return r;
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}
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/* Section 4.2.9.6 */
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int p2p_parse_invitation_resp(const uint8_t *pdu, size_t len,
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struct p2p_invitation_resp *out)
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{
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struct p2p_invitation_resp d = {};
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int r;
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if (len < 1)
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return -EINVAL;
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d.dialog_token = pdu[0];
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if (d.dialog_token == 0)
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return -EINVAL;
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r = p2p_parse_attrs(pdu + 1, len - 1,
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REQUIRED(STATUS, &d.status),
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REQUIRED(CONFIGURATION_TIMEOUT, &d.config_timeout),
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OPTIONAL(OPERATING_CHANNEL, &d.operating_channel),
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OPTIONAL(P2P_GROUP_BSSID, &d.group_bssid),
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OPTIONAL(CHANNEL_LIST, &d.channel_list),
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-1);
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if (r >= 0)
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memcpy(out, &d, sizeof(d));
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else
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p2p_free_invitation_resp(&d);
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return r;
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}
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/* Section 4.2.9.7 */
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int p2p_parse_device_disc_req(const uint8_t *pdu, size_t len,
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struct p2p_device_discoverability_req *out)
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{
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struct p2p_device_discoverability_req d = {};
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int r;
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if (len < 1)
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return -EINVAL;
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d.dialog_token = pdu[0];
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if (d.dialog_token == 0)
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return -EINVAL;
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r = p2p_parse_attrs(pdu + 1, len - 1,
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REQUIRED(P2P_DEVICE_ID, &d.device_addr),
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REQUIRED(P2P_GROUP_ID, &d.group_id),
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-1);
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if (r >= 0)
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memcpy(out, &d, sizeof(d));
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return r;
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}
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/* Section 4.2.9.8 */
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int p2p_parse_device_disc_resp(const uint8_t *pdu, size_t len,
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struct p2p_device_discoverability_resp *out)
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{
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struct p2p_device_discoverability_resp d = {};
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int r;
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if (len < 1)
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return -EINVAL;
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d.dialog_token = pdu[0];
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if (d.dialog_token == 0)
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return -EINVAL;
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r = p2p_parse_attrs(pdu + 1, len - 1,
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REQUIRED(STATUS, &d.status),
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-1);
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if (r >= 0)
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memcpy(out, &d, sizeof(d));
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return r;
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}
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/* Section 4.2.9.9 */
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int p2p_parse_provision_disc_req(const uint8_t *pdu, size_t len,
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struct p2p_provision_discovery_req *out)
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{
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struct p2p_provision_discovery_req d = {};
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int r;
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uint8_t *wsc_data;
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ssize_t wsc_len;
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if (len < 1)
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return -EINVAL;
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d.status = -1;
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d.dialog_token = pdu[0];
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if (d.dialog_token == 0)
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return -EINVAL;
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r = p2p_parse_attrs(pdu + 1, len - 1,
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REQUIRED(P2P_CAPABILITY, &d.capability),
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REQUIRED(P2P_DEVICE_INFO, &d.device_info),
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OPTIONAL(P2P_GROUP_ID, &d.group_id),
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OPTIONAL(INTENDED_P2P_INTERFACE_ADDR,
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&d.intended_interface_addr),
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OPTIONAL(STATUS, &d.status),
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OPTIONAL(OPERATING_CHANNEL, &d.operating_channel),
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OPTIONAL(CHANNEL_LIST, &d.channel_list),
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OPTIONAL(SESSION_INFO_DATA_INFO, &d.session_info),
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OPTIONAL(CONNECTION_CAPABILITY_INFO,
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&d.connection_capability),
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OPTIONAL(ADVERTISEMENT_ID_INFO, &d.advertisement_id),
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OPTIONAL(CONFIGURATION_TIMEOUT, &d.config_timeout),
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OPTIONAL(LISTEN_CHANNEL, &d.listen_channel),
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OPTIONAL(SESSION_ID_INFO, &d.session_id),
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OPTIONAL(FEATURE_CAPABILITY, &d.transport_protocol),
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OPTIONAL(PERSISTENT_GROUP_INFO,
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&d.persistent_group_info),
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-1);
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if (r < 0)
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goto error;
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wsc_data = ie_tlv_extract_wsc_payload(pdu + 1, len - 1, &wsc_len);
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if (wsc_len < 0) {
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r = wsc_len;
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goto error;
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}
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r = wsc_parse_attrs(wsc_data, wsc_len, NULL, NULL, 0, NULL,
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WSC_REQUIRED(CONFIGURATION_METHODS,
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&d.wsc_config_method),
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WSC_ATTR_INVALID);
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l_free(wsc_data);
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if (r < 0)
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goto error;
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/*
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* 4.2.9.9: "A single method shall be set in the Config Methods
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* attribute."
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*/
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if (__builtin_popcount(d.wsc_config_method) != 1) {
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r = -EINVAL;
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goto error;
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}
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memcpy(out, &d, sizeof(d));
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return 0;
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error:
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p2p_free_provision_disc_req(&d);
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return r;
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}
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/* Section 4.2.9.10 */
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int p2p_parse_provision_disc_resp(const uint8_t *pdu, size_t len,
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struct p2p_provision_discovery_resp *out)
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{
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struct p2p_provision_discovery_resp d = {};
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int r;
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uint8_t *wsc_data;
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ssize_t wsc_len;
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if (len < 1)
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return -EINVAL;
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d.status = -1;
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d.dialog_token = pdu[0];
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if (d.dialog_token == 0)
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return -EINVAL;
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/*
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* The P2P IE is optional but, if present, some of the attributes
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* are required for this frame type.
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*/
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r = p2p_parse_attrs(pdu + 1, len - 1,
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REQUIRED(STATUS, &d.status),
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REQUIRED(P2P_CAPABILITY, &d.capability),
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REQUIRED(P2P_DEVICE_INFO, &d.device_info),
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OPTIONAL(P2P_GROUP_ID, &d.group_id),
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OPTIONAL(INTENDED_P2P_INTERFACE_ADDR,
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&d.intended_interface_addr),
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OPTIONAL(OPERATING_CHANNEL, &d.operating_channel),
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OPTIONAL(CHANNEL_LIST, &d.channel_list),
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OPTIONAL(CONNECTION_CAPABILITY_INFO,
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&d.connection_capability),
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REQUIRED(ADVERTISEMENT_ID_INFO, &d.advertisement_id),
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OPTIONAL(CONFIGURATION_TIMEOUT, &d.config_timeout),
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REQUIRED(SESSION_ID_INFO, &d.session_id),
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REQUIRED(FEATURE_CAPABILITY, &d.transport_protocol),
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OPTIONAL(PERSISTENT_GROUP_INFO,
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&d.persistent_group_info),
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REQUIRED(SESSION_INFO_DATA_INFO, &d.session_info),
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-1);
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if (r < 0 && r != -ENOENT)
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goto error;
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wsc_data = ie_tlv_extract_wsc_payload(pdu + 1, len - 1, &wsc_len);
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if (wsc_len < 0) {
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r = wsc_len;
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goto error;
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}
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r = wsc_parse_attrs(wsc_data, wsc_len, NULL, NULL, 0, NULL,
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WSC_REQUIRED(CONFIGURATION_METHODS,
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&d.wsc_config_method),
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WSC_ATTR_INVALID);
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l_free(wsc_data);
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if (r < 0)
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goto error;
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/*
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* 4.2.9.10: "The value of the Config Methods attribute shall be
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* set to the same value received in the Provision Discovery
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* Request frame to indicate success or shall be null to indicate
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* failure of the request."
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*/
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if (__builtin_popcount(d.wsc_config_method) > 1) {
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r = -EINVAL;
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goto error;
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}
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memcpy(out, &d, sizeof(d));
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return 0;
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error:
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p2p_free_provision_disc_resp(&d);
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return r;
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}
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/* Section 4.2.10.2 */
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int p2p_parse_notice_of_absence(const uint8_t *pdu, size_t len,
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struct p2p_notice_of_absence *out)
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{
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struct p2p_notice_of_absence d = {};
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int r;
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if (len < 1)
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return -EINVAL;
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r = p2p_parse_attrs(pdu + 1, len - 1,
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REQUIRED(NOTICE_OF_ABSENCE, &d.notice_of_absence),
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-1);
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if (r >= 0)
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memcpy(out, &d, sizeof(d));
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else
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p2p_free_notice_of_absence(&d);
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return r;
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}
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/* Section 4.2.10.3 */
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int p2p_parse_presence_req(const uint8_t *pdu, size_t len,
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struct p2p_presence_req *out)
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{
|
||||
struct p2p_presence_req d = {};
|
||||
int r;
|
||||
|
||||
if (len < 1)
|
||||
return -EINVAL;
|
||||
|
||||
d.dialog_token = pdu[0];
|
||||
if (d.dialog_token == 0)
|
||||
return -EINVAL;
|
||||
|
||||
r = p2p_parse_attrs(pdu + 1, len - 1,
|
||||
REQUIRED(NOTICE_OF_ABSENCE, &d.notice_of_absence),
|
||||
-1);
|
||||
|
||||
if (r >= 0)
|
||||
memcpy(out, &d, sizeof(d));
|
||||
else
|
||||
p2p_free_presence_req(&d);
|
||||
|
||||
return r;
|
||||
}
|
||||
|
||||
/* Section 4.2.10.4 */
|
||||
int p2p_parse_presence_resp(const uint8_t *pdu, size_t len,
|
||||
struct p2p_presence_resp *out)
|
||||
{
|
||||
struct p2p_presence_resp d = {};
|
||||
int r;
|
||||
|
||||
if (len < 1)
|
||||
return -EINVAL;
|
||||
|
||||
d.dialog_token = pdu[0];
|
||||
if (d.dialog_token == 0)
|
||||
return -EINVAL;
|
||||
|
||||
r = p2p_parse_attrs(pdu + 1, len - 1,
|
||||
REQUIRED(STATUS, &d.status),
|
||||
REQUIRED(NOTICE_OF_ABSENCE, &d.notice_of_absence),
|
||||
-1);
|
||||
|
||||
if (r >= 0)
|
||||
memcpy(out, &d, sizeof(d));
|
||||
else
|
||||
p2p_free_presence_resp(&d);
|
||||
|
||||
return r;
|
||||
}
|
||||
|
||||
/* Section 4.2.10.5 */
|
||||
int p2p_parse_go_disc_req(const uint8_t *pdu, size_t len)
|
||||
{
|
||||
if (len != 1 || pdu[0] != 0)
|
||||
return -EINVAL;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static void p2p_free_channel_list_attr(struct p2p_channel_list_attr *attr)
|
||||
{
|
||||
l_queue_destroy(attr->channel_entries, l_free);
|
||||
|
|
|
|||
|
|
@ -436,6 +436,31 @@ int p2p_parse_deauthentication(const uint8_t *pdu, size_t len,
|
|||
struct p2p_deauthentication *out);
|
||||
int p2p_parse_disassociation(const uint8_t *pdu, size_t len,
|
||||
struct p2p_disassociation *out);
|
||||
int p2p_parse_go_negotiation_req(const uint8_t *pdu, size_t len,
|
||||
struct p2p_go_negotiation_req *out);
|
||||
int p2p_parse_go_negotiation_resp(const uint8_t *pdu, size_t len,
|
||||
struct p2p_go_negotiation_resp *out);
|
||||
int p2p_parse_go_negotiation_confirmation(const uint8_t *pdu, size_t len,
|
||||
struct p2p_go_negotiation_confirmation *out);
|
||||
int p2p_parse_invitation_req(const uint8_t *pdu, size_t len,
|
||||
struct p2p_invitation_req *out);
|
||||
int p2p_parse_invitation_resp(const uint8_t *pdu, size_t len,
|
||||
struct p2p_invitation_resp *out);
|
||||
int p2p_parse_device_disc_req(const uint8_t *pdu, size_t len,
|
||||
struct p2p_device_discoverability_req *out);
|
||||
int p2p_parse_device_disc_resp(const uint8_t *pdu, size_t len,
|
||||
struct p2p_device_discoverability_resp *out);
|
||||
int p2p_parse_provision_disc_req(const uint8_t *pdu, size_t len,
|
||||
struct p2p_provision_discovery_req *out);
|
||||
int p2p_parse_provision_disc_resp(const uint8_t *pdu, size_t len,
|
||||
struct p2p_provision_discovery_resp *out);
|
||||
int p2p_parse_notice_of_absence(const uint8_t *pdu, size_t len,
|
||||
struct p2p_notice_of_absence *out);
|
||||
int p2p_parse_presence_req(const uint8_t *pdu, size_t len,
|
||||
struct p2p_presence_req *out);
|
||||
int p2p_parse_presence_resp(const uint8_t *pdu, size_t len,
|
||||
struct p2p_presence_resp *out);
|
||||
int p2p_parse_go_disc_req(const uint8_t *pdu, size_t len);
|
||||
|
||||
void p2p_free_beacon(struct p2p_beacon *data);
|
||||
void p2p_free_probe_req(struct p2p_probe_req *data);
|
||||
|
|
|
|||
Loading…
Reference in New Issue