diff options
Diffstat (limited to 'pand/sdp.c')
| -rw-r--r-- | pand/sdp.c | 247 |
1 files changed, 247 insertions, 0 deletions
diff --git a/pand/sdp.c b/pand/sdp.c new file mode 100644 index 00000000..05e2e182 --- /dev/null +++ b/pand/sdp.c @@ -0,0 +1,247 @@ +/* + * + * BlueZ - Bluetooth protocol stack for Linux + * + * Copyright (C) 2002-2003 Maxim Krasnyansky <maxk@qualcomm.com> + * Copyright (C) 2002-2008 Marcel Holtmann <marcel@holtmann.org> + * + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + * + */ + +#ifdef HAVE_CONFIG_H +#include <config.h> +#endif + +#include <stdio.h> +#include <errno.h> +#include <unistd.h> +#include <stdlib.h> +#include <string.h> +#include <syslog.h> +#include <sys/types.h> +#include <sys/socket.h> + +#include <bluetooth/bluetooth.h> +#include <bluetooth/sdp.h> +#include <bluetooth/sdp_lib.h> +#include <bluetooth/bnep.h> + +#include "pand.h" + +static sdp_record_t *record; +static sdp_session_t *session; + +void bnep_sdp_unregister(void) +{ + if (record && sdp_record_unregister(session, record)) + syslog(LOG_ERR, "Service record unregistration failed."); + + sdp_close(session); +} + +static void add_lang_attr(sdp_record_t *r) +{ + sdp_lang_attr_t base_lang; + sdp_list_t *langs = 0; + + /* UTF-8 MIBenum (http://www.iana.org/assignments/character-sets) */ + base_lang.code_ISO639 = (0x65 << 8) | 0x6e; + base_lang.encoding = 106; + base_lang.base_offset = SDP_PRIMARY_LANG_BASE; + langs = sdp_list_append(0, &base_lang); + sdp_set_lang_attr(r, langs); + sdp_list_free(langs, 0); +} + +int bnep_sdp_register(bdaddr_t *device, uint16_t role) +{ + sdp_list_t *svclass, *pfseq, *apseq, *root, *aproto; + uuid_t root_uuid, pan, l2cap, bnep; + sdp_profile_desc_t profile[1]; + sdp_list_t *proto[2]; + sdp_data_t *v, *p; + uint16_t psm = 15, version = 0x0100; + uint16_t security_desc = 0; + uint16_t net_access_type = 0xfffe; + uint32_t max_net_access_rate = 0; + char *name = "BlueZ PAN"; + char *desc = "BlueZ PAN Service"; + int status; + + session = sdp_connect(BDADDR_ANY, BDADDR_LOCAL, 0); + if (!session) { + syslog(LOG_ERR, "Failed to connect to the local SDP server. %s(%d)", + strerror(errno), errno); + return -1; + } + + record = sdp_record_alloc(); + if (!record) { + syslog(LOG_ERR, "Failed to allocate service record %s(%d)", + strerror(errno), errno); + sdp_close(session); + return -1; + } + + sdp_uuid16_create(&root_uuid, PUBLIC_BROWSE_GROUP); + root = sdp_list_append(NULL, &root_uuid); + sdp_set_browse_groups(record, root); + sdp_list_free(root, 0); + + sdp_uuid16_create(&l2cap, L2CAP_UUID); + proto[0] = sdp_list_append(NULL, &l2cap); + p = sdp_data_alloc(SDP_UINT16, &psm); + proto[0] = sdp_list_append(proto[0], p); + apseq = sdp_list_append(NULL, proto[0]); + + sdp_uuid16_create(&bnep, BNEP_UUID); + proto[1] = sdp_list_append(NULL, &bnep); + v = sdp_data_alloc(SDP_UINT16, &version); + proto[1] = sdp_list_append(proto[1], v); + + /* Supported protocols */ + { + uint16_t ptype[4] = { + 0x0800, /* IPv4 */ + 0x0806, /* ARP */ + }; + sdp_data_t *head, *pseq; + int p; + + for (p = 0, head = NULL; p < 2; p++) { + sdp_data_t *data = sdp_data_alloc(SDP_UINT16, &ptype[p]); + if (head) + sdp_seq_append(head, data); + else + head = data; + } + pseq = sdp_data_alloc(SDP_SEQ16, head); + proto[1] = sdp_list_append(proto[1], pseq); + } + + apseq = sdp_list_append(apseq, proto[1]); + + aproto = sdp_list_append(NULL, apseq); + sdp_set_access_protos(record, aproto); + + add_lang_attr(record); + + sdp_list_free(proto[0], NULL); + sdp_list_free(proto[1], NULL); + sdp_list_free(apseq, NULL); + sdp_list_free(aproto, NULL); + sdp_data_free(p); + sdp_data_free(v); + sdp_attr_add_new(record, SDP_ATTR_SECURITY_DESC, SDP_UINT16, &security_desc); + + switch (role) { + case BNEP_SVC_NAP: + sdp_uuid16_create(&pan, NAP_SVCLASS_ID); + svclass = sdp_list_append(NULL, &pan); + sdp_set_service_classes(record, svclass); + + sdp_uuid16_create(&profile[0].uuid, NAP_PROFILE_ID); + profile[0].version = 0x0100; + pfseq = sdp_list_append(NULL, &profile[0]); + sdp_set_profile_descs(record, pfseq); + + sdp_set_info_attr(record, "Network Access Point", name, desc); + + sdp_attr_add_new(record, SDP_ATTR_NET_ACCESS_TYPE, SDP_UINT16, &net_access_type); + sdp_attr_add_new(record, SDP_ATTR_MAX_NET_ACCESSRATE, SDP_UINT32, &max_net_access_rate); + break; + + case BNEP_SVC_GN: + sdp_uuid16_create(&pan, GN_SVCLASS_ID); + svclass = sdp_list_append(NULL, &pan); + sdp_set_service_classes(record, svclass); + + sdp_uuid16_create(&profile[0].uuid, GN_PROFILE_ID); + profile[0].version = 0x0100; + pfseq = sdp_list_append(NULL, &profile[0]); + sdp_set_profile_descs(record, pfseq); + + sdp_set_info_attr(record, "Group Network Service", name, desc); + break; + + case BNEP_SVC_PANU: + sdp_uuid16_create(&pan, PANU_SVCLASS_ID); + svclass = sdp_list_append(NULL, &pan); + sdp_set_service_classes(record, svclass); + sdp_list_free(svclass, 0); + + sdp_uuid16_create(&profile[0].uuid, PANU_PROFILE_ID); + profile[0].version = 0x0100; + pfseq = sdp_list_append(NULL, &profile[0]); + sdp_set_profile_descs(record, pfseq); + sdp_list_free(pfseq, 0); + + sdp_set_info_attr(record, "PAN User", name, desc); + break; + } + + status = sdp_device_record_register(session, device, record, 0); + if (status) { + syslog(LOG_ERR, "SDP registration failed."); + sdp_record_free(record); record = NULL; + sdp_close(session); + return -1; + } + + return 0; +} + +/* Search for PAN service. + * Returns 1 if service is found and 0 otherwise. */ +int bnep_sdp_search(bdaddr_t *src, bdaddr_t *dst, uint16_t service) +{ + sdp_list_t *srch, *rsp = NULL; + sdp_session_t *s; + uuid_t svclass; + int err; + + switch (service) { + case BNEP_SVC_PANU: + sdp_uuid16_create(&svclass, PANU_SVCLASS_ID); + break; + case BNEP_SVC_NAP: + sdp_uuid16_create(&svclass, NAP_SVCLASS_ID); + break; + case BNEP_SVC_GN: + sdp_uuid16_create(&svclass, GN_SVCLASS_ID); + break; + } + + srch = sdp_list_append(NULL, &svclass); + + s = sdp_connect(src, dst, 0); + if (!s) { + syslog(LOG_ERR, "Failed to connect to the SDP server. %s(%d)", + strerror(errno), errno); + return 0; + } + + err = sdp_service_search_req(s, srch, 1, &rsp); + sdp_close(s); + + /* Assume that search is successeful + * if at least one record is found */ + if (!err && sdp_list_len(rsp)) + return 1; + + return 0; +} |