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Diffstat (limited to 'health/mcap.c')
| -rw-r--r-- | health/mcap.c | 2195 |
1 files changed, 2195 insertions, 0 deletions
diff --git a/health/mcap.c b/health/mcap.c new file mode 100644 index 0000000..48866d4 --- /dev/null +++ b/health/mcap.c @@ -0,0 +1,2195 @@ +/* + * + * MCAP for BlueZ - Bluetooth protocol stack for Linux + * + * Copyright (C) 2010 GSyC/LibreSoft, Universidad Rey Juan Carlos. + * + * Authors: + * Santiago Carot-Nemesio <sancane at gmail.com> + * Jose Antonio Santos-Cadenas <santoscadenas at gmail.com> + * + * 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 + * + */ + +#include "log.h" +#include "error.h" + +#include <netinet/in.h> +#include <stdlib.h> +#include <errno.h> +#include <unistd.h> + +#include "btio.h" +#include <bluetooth/bluetooth.h> +#include <bluetooth/l2cap.h> +#include "mcap.h" +#include "mcap_lib.h" +#include "mcap_internal.h" + +#define RESPONSE_TIMER 6 /* seconds */ +#define MAX_CACHED 10 /* 10 devices */ + +#define MCAP_ERROR g_quark_from_static_string("mcap-error-quark") + +#define RELEASE_TIMER(__mcl) do { \ + if (__mcl->tid) { \ + g_source_remove(__mcl->tid); \ + __mcl->tid = 0; \ + } \ +} while(0) + +struct connect_mcl { + struct mcap_mcl *mcl; /* MCL for this operation */ + mcap_mcl_connect_cb connect_cb; /* Connect callback */ + GDestroyNotify destroy; /* Destroy callback */ + gpointer user_data; /* Callback user data */ +}; + +typedef union { + mcap_mdl_operation_cb op; + mcap_mdl_operation_conf_cb op_conf; + mcap_mdl_notify_cb notify; +} mcap_cb_type; + +struct mcap_mdl_op_cb { + struct mcap_mdl *mdl; /* MDL for this operation */ + mcap_cb_type cb; /* Operation callback */ + GDestroyNotify destroy; /* Destroy callback */ + gpointer user_data; /* Callback user data */ +}; + +/* MCAP finite state machine functions */ +static void proc_req_connected(struct mcap_mcl *mcl, uint8_t *cmd, uint32_t l); +static void proc_req_pending(struct mcap_mcl *mcl, uint8_t *cmd, uint32_t l); +static void proc_req_active(struct mcap_mcl *mcl, uint8_t *cmd, uint32_t l); + +static void (*proc_req[])(struct mcap_mcl *mcl, uint8_t *cmd, uint32_t len) = { + proc_req_connected, + proc_req_pending, + proc_req_active +}; + +static void mcap_cache_mcl(struct mcap_mcl *mcl); + +static void default_mdl_connected_cb(struct mcap_mdl *mdl, gpointer data) +{ + DBG("MCAP Unmanaged mdl connection"); +} + +static void default_mdl_closed_cb(struct mcap_mdl *mdl, gpointer data) +{ + DBG("MCAP Unmanaged mdl closed"); +} + +static void default_mdl_deleted_cb(struct mcap_mdl *mdl, gpointer data) +{ + DBG("MCAP Unmanaged mdl deleted"); +} + +static void default_mdl_aborted_cb(struct mcap_mdl *mdl, gpointer data) +{ + DBG("MCAP Unmanaged mdl aborted"); +} + +static uint8_t default_mdl_conn_req_cb(struct mcap_mcl *mcl, + uint8_t mdepid, uint16_t mdlid, + uint8_t *conf, gpointer data) +{ + DBG("MCAP mdl remote connection aborted"); + /* Due to this callback isn't managed this request won't be supported */ + return MCAP_REQUEST_NOT_SUPPORTED; +} + +static uint8_t default_mdl_reconn_req_cb(struct mcap_mdl *mdl, + gpointer data) +{ + DBG("MCAP mdl remote reconnection aborted"); + /* Due to this callback isn't managed this request won't be supported */ + return MCAP_REQUEST_NOT_SUPPORTED; +} + +static void set_default_cb(struct mcap_mcl *mcl) +{ + if (!mcl->cb) + mcl->cb = g_new0(struct mcap_mdl_cb, 1); + + mcl->cb->mdl_connected = default_mdl_connected_cb; + mcl->cb->mdl_closed = default_mdl_closed_cb; + mcl->cb->mdl_deleted = default_mdl_deleted_cb; + mcl->cb->mdl_aborted = default_mdl_aborted_cb; + mcl->cb->mdl_conn_req = default_mdl_conn_req_cb; + mcl->cb->mdl_reconn_req = default_mdl_reconn_req_cb; +} + +static char *error2str(uint8_t rc) +{ + switch (rc) { + case MCAP_SUCCESS: + return "Success"; + case MCAP_INVALID_OP_CODE: + return "Invalid Op Code"; + case MCAP_INVALID_PARAM_VALUE: + return "Invalid Parameter Value"; + case MCAP_INVALID_MDEP: + return "Invalid MDEP"; + case MCAP_MDEP_BUSY: + return "MDEP Busy"; + case MCAP_INVALID_MDL: + return "Invalid MDL"; + case MCAP_MDL_BUSY: + return "MDL Busy"; + case MCAP_INVALID_OPERATION: + return "Invalid Operation"; + case MCAP_RESOURCE_UNAVAILABLE: + return "Resource Unavailable"; + case MCAP_UNSPECIFIED_ERROR: + return "Unspecified Error"; + case MCAP_REQUEST_NOT_SUPPORTED: + return "Request Not Supported"; + case MCAP_CONFIGURATION_REJECTED: + return "Configuration Rejected"; + default: + return "Unknown Response Code"; + } +} + +static gboolean mcap_send_std_opcode(struct mcap_mcl *mcl, void *cmd, + uint32_t size, GError **err) +{ + if (mcl->state == MCL_IDLE) { + g_set_error(err, MCAP_ERROR, MCAP_ERROR_FAILED, + "MCL is not connected"); + return FALSE; + } + + if (mcl->req != MCL_AVAILABLE) { + g_set_error(err, MCAP_ERROR, MCAP_ERROR_RESOURCE_UNAVAILABLE, + "Pending request"); + return FALSE; + } + + if (!(mcl->ctrl & MCAP_CTRL_STD_OP)) { + g_set_error(err, MCAP_ERROR, MCAP_ERROR_REQUEST_NOT_SUPPORTED, + "Remote does not support standard opcodes"); + return FALSE; + } + + if (mcl->state == MCL_PENDING) { + g_set_error(err, MCAP_ERROR, MCAP_ERROR_INVALID_OPERATION, + "Not Std Op. Codes can be sent in PENDING State"); + return FALSE; + } + + if (mcap_send_data(g_io_channel_unix_get_fd(mcl->cc), cmd, size) < 0) { + g_set_error(err, MCAP_ERROR, MCAP_ERROR_FAILED, + "Command can't be sent, write error"); + return FALSE; + } + + mcl->lcmd = cmd; + mcl->req = MCL_WAITING_RSP; + + return TRUE; +} + +static void update_mcl_state(struct mcap_mcl *mcl) +{ + GSList *l; + struct mcap_mdl *mdl; + + if (mcl->state == MCL_PENDING) + return; + + for (l = mcl->mdls; l; l = l->next) { + mdl = l->data; + + if (mdl->state == MDL_CONNECTED) { + mcl->state = MCL_ACTIVE; + return; + } + } + + mcl->state = MCL_CONNECTED; +} + +static void shutdown_mdl(struct mcap_mdl *mdl) +{ + mdl->state = MDL_CLOSED; + + if (mdl->wid) { + g_source_remove(mdl->wid); + mdl->wid = 0; + } + + if (mdl->dc) { + g_io_channel_shutdown(mdl->dc, TRUE, NULL); + g_io_channel_unref(mdl->dc); + mdl->dc = NULL; + } +} + +static void free_mdl(struct mcap_mdl *mdl) +{ + if (!mdl) + return; + + mcap_mcl_unref(mdl->mcl); + g_free(mdl); +} + +static gint cmp_mdl_state(gconstpointer a, gconstpointer b) +{ + const struct mcap_mdl *mdl = a; + const MDLState *st = b; + + if (mdl->state == *st) + return 0; + else if (mdl->state < *st) + return -1; + else + return 1; +} + +static void free_mcap_mdl_op(struct mcap_mdl_op_cb *op) +{ + if (op->destroy) + op->destroy(op->user_data); + + if (op->mdl) + mcap_mdl_unref(op->mdl); + + g_free(op); +} + +static void free_mcl_priv_data(struct mcap_mcl *mcl) +{ + free_mcap_mdl_op(mcl->priv_data); + mcl->priv_data = NULL; +} + +static void mcap_notify_error(struct mcap_mcl *mcl, GError *err) +{ + struct mcap_mdl_op_cb *con = mcl->priv_data; + struct mcap_mdl *mdl; + MDLState st; + GSList *l; + + if (!con || !mcl->lcmd) + return; + + switch (mcl->lcmd[0]) { + case MCAP_MD_CREATE_MDL_REQ: + st = MDL_WAITING; + l = g_slist_find_custom(mcl->mdls, &st, cmp_mdl_state); + mdl = l->data; + mcl->mdls = g_slist_remove(mcl->mdls, mdl); + mcap_mdl_unref(mdl); + update_mcl_state(mcl); + con->cb.op_conf(NULL, 0, err, con->user_data); + break; + case MCAP_MD_ABORT_MDL_REQ: + st = MDL_WAITING; + l = g_slist_find_custom(mcl->mdls, &st, cmp_mdl_state); + shutdown_mdl(l->data); + update_mcl_state(mcl); + con->cb.notify(err, con->user_data); + break; + case MCAP_MD_DELETE_MDL_REQ: + for (l = mcl->mdls; l; l = l->next) { + mdl = l->data; + if (mdl->state == MDL_DELETING) + mdl->state = (mdl->dc) ? MDL_CONNECTED : + MDL_CLOSED; + } + update_mcl_state(mcl); + con->cb.notify(err, con->user_data); + break; + case MCAP_MD_RECONNECT_MDL_REQ: + st = MDL_WAITING; + l = g_slist_find_custom(mcl->mdls, &st, cmp_mdl_state); + shutdown_mdl(l->data); + update_mcl_state(mcl); + con->cb.op(NULL, err, con->user_data); + break; + } + + free_mcl_priv_data(mcl); + g_free(mcl->lcmd); + mcl->lcmd = NULL; +} + +int mcap_send_data(int sock, const void *buf, uint32_t size) +{ + const uint8_t *buf_b = buf; + uint32_t sent = 0; + + while (sent < size) { + int n = write(sock, buf_b + sent, size - sent); + if (n < 0) + return -1; + sent += n; + } + + return 0; +} + +static int mcap_send_cmd(struct mcap_mcl *mcl, uint8_t oc, uint8_t rc, + uint16_t mdl, uint8_t *data, size_t len) +{ + mcap_rsp *cmd; + int sock, sent; + + if (mcl->cc == NULL) + return -1; + + sock = g_io_channel_unix_get_fd(mcl->cc); + + cmd = g_malloc(sizeof(mcap_rsp) + len); + cmd->op = oc; + cmd->rc = rc; + cmd->mdl = htons(mdl); + + if (data && len > 0) + memcpy(cmd->data, data, len); + + sent = mcap_send_data(sock, cmd, sizeof(mcap_rsp) + len); + g_free(cmd); + + return sent; +} + +static struct mcap_mdl *get_mdl(struct mcap_mcl *mcl, uint16_t mdlid) +{ + GSList *l; + struct mcap_mdl *mdl; + + for (l = mcl->mdls; l; l = l->next) { + mdl = l->data; + if (mdlid == mdl->mdlid) + return mdl; + } + + return NULL; +} + +static uint16_t generate_mdlid(struct mcap_mcl *mcl) +{ + uint16_t mdlid = mcl->next_mdl; + struct mcap_mdl *mdl; + + do { + mdl = get_mdl(mcl, mdlid); + if (!mdl) { + mcl->next_mdl = (mdlid % MCAP_MDLID_FINAL) + 1; + return mdlid; + } else + mdlid = (mdlid % MCAP_MDLID_FINAL) + 1; + } while (mdlid != mcl->next_mdl); + + /* No more mdlids availables */ + return 0; +} + +static mcap_md_req *create_req(uint8_t op, uint16_t mdl_id) +{ + mcap_md_req *req_cmd; + + req_cmd = g_new0(mcap_md_req, 1); + + req_cmd->op = op; + req_cmd->mdl = htons(mdl_id); + + return req_cmd; +} + +static mcap_md_create_mdl_req *create_mdl_req(uint16_t mdl_id, uint8_t mdep, + uint8_t conf) +{ + mcap_md_create_mdl_req *req_mdl; + + req_mdl = g_new0(mcap_md_create_mdl_req, 1); + + req_mdl->op = MCAP_MD_CREATE_MDL_REQ; + req_mdl->mdl = htons(mdl_id); + req_mdl->mdep = mdep; + req_mdl->conf = conf; + + return req_mdl; +} + +static gint compare_mdl(gconstpointer a, gconstpointer b) +{ + const struct mcap_mdl *mdla = a; + const struct mcap_mdl *mdlb = b; + + if (mdla->mdlid == mdlb->mdlid) + return 0; + else if (mdla->mdlid < mdlb->mdlid) + return -1; + else + return 1; +} + +static gboolean wait_response_timer(gpointer data) +{ + struct mcap_mcl *mcl = data; + + GError *gerr = NULL; + + RELEASE_TIMER(mcl); + + g_set_error(&gerr, MCAP_ERROR, MCAP_ERROR_FAILED, + "Timeout waiting response"); + + mcap_notify_error(mcl, gerr); + + g_error_free(gerr); + mcl->mi->mcl_disconnected_cb(mcl, mcl->mi->user_data); + mcap_cache_mcl(mcl); + + return FALSE; +} + +gboolean mcap_create_mdl(struct mcap_mcl *mcl, + uint8_t mdepid, + uint8_t conf, + mcap_mdl_operation_conf_cb connect_cb, + gpointer user_data, + GDestroyNotify destroy, + GError **err) +{ + struct mcap_mdl *mdl; + struct mcap_mdl_op_cb *con; + mcap_md_create_mdl_req *cmd; + uint16_t id; + + id = generate_mdlid(mcl); + if (!id) { + g_set_error(err, MCAP_ERROR, MCAP_ERROR_FAILED, + "Not more mdlids available"); + return FALSE; + } + + mdl = g_new0(struct mcap_mdl, 1); + mdl->mcl = mcap_mcl_ref(mcl); + mdl->mdlid = id; + mdl->mdep_id = mdepid; + mdl->state = MDL_WAITING; + + con = g_new0(struct mcap_mdl_op_cb, 1); + con->mdl = mcap_mdl_ref(mdl); + con->cb.op_conf = connect_cb; + con->destroy = destroy; + con->user_data = user_data; + + cmd = create_mdl_req(id, mdepid, conf); + if (!mcap_send_std_opcode(mcl, cmd, sizeof(mcap_md_create_mdl_req), + err)) { + mcap_mdl_unref(con->mdl); + g_free(con); + g_free(cmd); + return FALSE; + } + + mcl->state = MCL_ACTIVE; + mcl->priv_data = con; + + mcl->mdls = g_slist_insert_sorted(mcl->mdls, mcap_mdl_ref(mdl), + compare_mdl); + mcl->tid = g_timeout_add_seconds(RESPONSE_TIMER, wait_response_timer, + mcl); + return TRUE; +} + +gboolean mcap_reconnect_mdl(struct mcap_mdl *mdl, + mcap_mdl_operation_cb reconnect_cb, + gpointer user_data, + GDestroyNotify destroy, + GError **err) +{ + struct mcap_mdl_op_cb *con; + struct mcap_mcl *mcl = mdl->mcl; + mcap_md_req *cmd; + + if (mdl->state != MDL_CLOSED) { + g_set_error(err, MCAP_ERROR, MCAP_ERROR_FAILED, + "MDL is not closed"); + return FALSE; + } + + cmd = create_req(MCAP_MD_RECONNECT_MDL_REQ, mdl->mdlid); + if (!mcap_send_std_opcode(mcl, cmd, sizeof(mcap_md_req), err)) { + g_free(cmd); + return FALSE; + } + + mdl->state = MDL_WAITING; + + con = g_new0(struct mcap_mdl_op_cb, 1); + con->mdl = mcap_mdl_ref(mdl); + con->cb.op = reconnect_cb; + con->destroy = destroy; + con->user_data = user_data; + + mcl->state = MCL_ACTIVE; + mcl->priv_data = con; + + mcl->tid = g_timeout_add_seconds(RESPONSE_TIMER, wait_response_timer, + mcl); + return TRUE; +} + +static gboolean send_delete_req(struct mcap_mcl *mcl, + struct mcap_mdl_op_cb *con, + uint16_t mdlid, + GError **err) +{ + mcap_md_req *cmd; + + cmd = create_req(MCAP_MD_DELETE_MDL_REQ, mdlid); + if (!mcap_send_std_opcode(mcl, cmd, sizeof(mcap_md_req), err)) { + g_free(cmd); + return FALSE; + } + + mcl->priv_data = con; + + mcl->tid = g_timeout_add_seconds(RESPONSE_TIMER, wait_response_timer, + mcl); + return TRUE; +} + +gboolean mcap_delete_all_mdls(struct mcap_mcl *mcl, + mcap_mdl_notify_cb delete_cb, + gpointer user_data, + GDestroyNotify destroy, + GError **err) +{ + GSList *l; + struct mcap_mdl *mdl; + struct mcap_mdl_op_cb *con; + + DBG("MCL in state: %d", mcl->state); + if (!mcl->mdls) { + g_set_error(err, MCAP_ERROR, MCAP_ERROR_FAILED, + "There are not MDLs created"); + return FALSE; + } + + for (l = mcl->mdls; l; l = l->next) { + mdl = l->data; + if (mdl->state != MDL_WAITING) + mdl->state = MDL_DELETING; + } + + con = g_new0(struct mcap_mdl_op_cb, 1); + con->mdl = NULL; + con->cb.notify = delete_cb; + con->destroy = destroy; + con->user_data = user_data; + + + if (!send_delete_req(mcl, con, MCAP_ALL_MDLIDS, err)) { + g_free(con); + return FALSE; + } + + return TRUE; +} + +gboolean mcap_delete_mdl(struct mcap_mdl *mdl, mcap_mdl_notify_cb delete_cb, + gpointer user_data, + GDestroyNotify destroy, + GError **err) +{ + struct mcap_mcl *mcl= mdl->mcl; + struct mcap_mdl_op_cb *con; + GSList *l; + + l = g_slist_find(mcl->mdls, mdl); + + if (!l) { + g_set_error(err, MCAP_ERROR, MCAP_ERROR_INVALID_MDL, + "%s" , error2str(MCAP_INVALID_MDEP)); + return FALSE; + } + + if (mdl->state == MDL_WAITING) { + g_set_error(err, MCAP_ERROR, MCAP_ERROR_FAILED, + "Mdl is not created"); + return FALSE; + } + + mdl->state = MDL_DELETING; + + con = g_new0(struct mcap_mdl_op_cb, 1); + con->mdl = mcap_mdl_ref(mdl); + con->cb.notify = delete_cb; + con->destroy = destroy; + con->user_data = user_data; + + if (!send_delete_req(mcl, con, mdl->mdlid, err)) { + mcap_mdl_unref(con->mdl); + g_free(con); + return FALSE; + } + + return TRUE; +} + +gboolean mcap_mdl_abort(struct mcap_mdl *mdl, mcap_mdl_notify_cb abort_cb, + gpointer user_data, + GDestroyNotify destroy, + GError **err) +{ + struct mcap_mdl_op_cb *con; + struct mcap_mcl *mcl = mdl->mcl; + mcap_md_req *cmd; + + if (mdl->state != MDL_WAITING) { + g_set_error(err, MCAP_ERROR, MCAP_ERROR_FAILED, + "Mdl in invalid state"); + return FALSE; + } + + cmd = create_req(MCAP_MD_ABORT_MDL_REQ, mdl->mdlid); + if (!mcap_send_std_opcode(mcl, cmd, sizeof(mcap_md_req), err)) { + g_free(cmd); + return FALSE; + } + + con = g_new0(struct mcap_mdl_op_cb, 1); + con->mdl = mcap_mdl_ref(mdl); + con->cb.notify = abort_cb; + con->destroy = destroy; + con->user_data = user_data; + + mcl->priv_data = con; + mcl->tid = g_timeout_add_seconds(RESPONSE_TIMER, wait_response_timer, + mcl); + return TRUE; +} + +static struct mcap_mcl *find_mcl(GSList *list, const bdaddr_t *addr) +{ + GSList *l; + struct mcap_mcl *mcl; + + for (l = list; l; l = l->next) { + mcl = l->data; + + if (!bacmp(&mcl->addr, addr)) + return mcl; + } + + return NULL; +} + +int mcap_mdl_get_fd(struct mcap_mdl *mdl) +{ + if (!mdl || mdl->state != MDL_CONNECTED) + return -ENOTCONN; + + return g_io_channel_unix_get_fd(mdl->dc); +} + +uint16_t mcap_mdl_get_mdlid(struct mcap_mdl *mdl) +{ + if (!mdl) + return MCAP_MDLID_RESERVED; + + return mdl->mdlid; +} + +static void close_mcl(struct mcap_mcl *mcl, gboolean cache_requested) +{ + gboolean save = ((!(mcl->ctrl & MCAP_CTRL_FREE)) && cache_requested); + + RELEASE_TIMER(mcl); + + if (mcl->cc) { + g_io_channel_shutdown(mcl->cc, TRUE, NULL); + g_io_channel_unref(mcl->cc); + mcl->cc = NULL; + } + + if (mcl->wid) { + g_source_remove(mcl->wid); + mcl->wid = 0; + } + + if (mcl->lcmd) { + g_free(mcl->lcmd); + mcl->lcmd = NULL; + } + + if (mcl->priv_data) + free_mcl_priv_data(mcl); + + g_slist_foreach(mcl->mdls, (GFunc) shutdown_mdl, NULL); + + mcap_sync_stop(mcl); + + mcl->state = MCL_IDLE; + + if (save) + return; + + g_slist_foreach(mcl->mdls, (GFunc) mcap_mdl_unref, NULL); + g_slist_free(mcl->mdls); + mcl->mdls = NULL; +} + +static void mcap_mcl_shutdown(struct mcap_mcl *mcl) +{ + close_mcl(mcl, TRUE); +} + +static void mcap_mcl_release(struct mcap_mcl *mcl) +{ + close_mcl(mcl, FALSE); +} + +static void mcap_cache_mcl(struct mcap_mcl *mcl) +{ + GSList *l; + struct mcap_mcl *last; + int len; + + if (mcl->ctrl & MCAP_CTRL_CACHED) + return; + + mcl->mi->mcls = g_slist_remove(mcl->mi->mcls, mcl); + + if (mcl->ctrl & MCAP_CTRL_NOCACHE) { + mcl->mi->cached = g_slist_remove(mcl->mi->cached, mcl); + mcap_mcl_release(mcl); + mcap_mcl_unref(mcl); + return; + } + + DBG("Caching MCL"); + + len = g_slist_length(mcl->mi->cached); + if (len == MAX_CACHED) { + /* Remove the latest cached mcl */ + l = g_slist_last(mcl->mi->cached); + last = l->data; + mcl->mi->cached = g_slist_remove(mcl->mi->cached, last); + last->ctrl &= ~MCAP_CTRL_CACHED; + if (last->ctrl & MCAP_CTRL_CONN) { + /* We have to release this MCL if */ + /* connection is not succesful */ + last->ctrl |= MCAP_CTRL_FREE; + } else { + mcap_mcl_release(last); + last->mi->mcl_uncached_cb(last, last->mi->user_data); + } + mcap_mcl_unref(last); + } + + mcl->mi->cached = g_slist_prepend(mcl->mi->cached, mcl); + mcl->ctrl |= MCAP_CTRL_CACHED; + mcap_mcl_shutdown(mcl); +} + +static void mcap_uncache_mcl(struct mcap_mcl *mcl) +{ + if (!(mcl->ctrl & MCAP_CTRL_CACHED)) + return; + + DBG("Got MCL from cache"); + + mcl->mi->cached = g_slist_remove(mcl->mi->cached, mcl); + mcl->mi->mcls = g_slist_prepend(mcl->mi->mcls, mcl); + mcl->ctrl &= ~MCAP_CTRL_CACHED; + mcl->ctrl &= ~MCAP_CTRL_FREE; +} + +void mcap_close_mcl(struct mcap_mcl *mcl, gboolean cache) +{ + if (!mcl) + return; + + if (mcl->ctrl & MCAP_CTRL_FREE) { + mcap_mcl_release(mcl); + return; + } + + if (!cache) + mcl->ctrl |= MCAP_CTRL_NOCACHE; + + if (mcl->cc) { + g_io_channel_shutdown(mcl->cc, TRUE, NULL); + g_io_channel_unref(mcl->cc); + mcl->cc = NULL; + mcl->state = MCL_IDLE; + } else if ((mcl->ctrl & MCAP_CTRL_CACHED) && + (mcl->ctrl & MCAP_CTRL_NOCACHE)) { + mcl->ctrl &= ~MCAP_CTRL_CACHED; + mcl->mi->cached = g_slist_remove(mcl->mi->cached, mcl); + mcap_mcl_release(mcl); + mcap_mcl_unref(mcl); + } +} + +struct mcap_mcl *mcap_mcl_ref(struct mcap_mcl *mcl) +{ + mcl->ref++; + + DBG("mcap_mcl_ref(%p): ref=%d", mcl, mcl->ref); + + return mcl; +} + +void mcap_mcl_unref(struct mcap_mcl *mcl) +{ + mcl->ref--; + + DBG("mcap_mcl_unref(%p): ref=%d", mcl, mcl->ref); + + if (mcl->ref > 0) + return; + + mcap_mcl_release(mcl); + mcap_instance_unref(mcl->mi); + g_free(mcl->cb); + g_free(mcl); +} + +static gboolean parse_set_opts(struct mcap_mdl_cb *mdl_cb, GError **err, + McapMclCb cb1, va_list args) +{ + McapMclCb cb = cb1; + struct mcap_mdl_cb *c; + + c = g_new0(struct mcap_mdl_cb, 1); + + while (cb != MCAP_MDL_CB_INVALID) { + switch (cb) { + case MCAP_MDL_CB_CONNECTED: + c->mdl_connected = va_arg(args, mcap_mdl_event_cb); + break; + case MCAP_MDL_CB_CLOSED: + c->mdl_closed = va_arg(args, mcap_mdl_event_cb); + break; + case MCAP_MDL_CB_DELETED: + c->mdl_deleted = va_arg(args, mcap_mdl_event_cb); + break; + case MCAP_MDL_CB_ABORTED: + c->mdl_aborted = va_arg(args, mcap_mdl_event_cb); + break; + case MCAP_MDL_CB_REMOTE_CONN_REQ: + c->mdl_conn_req = va_arg(args, + mcap_remote_mdl_conn_req_cb); + break; + case MCAP_MDL_CB_REMOTE_RECONN_REQ: + c->mdl_reconn_req = va_arg(args, + mcap_remote_mdl_reconn_req_cb); + break; + default: + g_set_error(err, MCAP_ERROR, MCAP_ERROR_INVALID_ARGS, + "Unknown option %d", cb); + return FALSE; + } + cb = va_arg(args, int); + } + + /* Set new callbacks */ + if (c->mdl_connected) + mdl_cb->mdl_connected = c->mdl_connected; + if (c->mdl_closed) + mdl_cb->mdl_closed = c->mdl_closed; + if (c->mdl_deleted) + mdl_cb->mdl_deleted = c->mdl_deleted; + if (c->mdl_aborted) + mdl_cb->mdl_aborted = c->mdl_aborted; + if (c->mdl_conn_req) + mdl_cb->mdl_conn_req = c->mdl_conn_req; + if (c->mdl_reconn_req) + mdl_cb->mdl_reconn_req = c->mdl_reconn_req; + + g_free(c); + + return TRUE; +} + +gboolean mcap_mcl_set_cb(struct mcap_mcl *mcl, gpointer user_data, + GError **gerr, McapMclCb cb1, ...) +{ + va_list args; + gboolean ret; + + va_start(args, cb1); + ret = parse_set_opts(mcl->cb, gerr, cb1, args); + va_end(args); + + if (!ret) + return FALSE; + + mcl->cb->user_data = user_data; + return TRUE; +} + +void mcap_mcl_get_addr(struct mcap_mcl *mcl, bdaddr_t *addr) +{ + bacpy(addr, &mcl->addr); +} + +static void mcap_del_mdl(gpointer elem, gpointer user_data) +{ + struct mcap_mdl *mdl = elem; + gboolean notify = *(gboolean *) user_data; + + shutdown_mdl(mdl); + if (notify) + mdl->mcl->cb->mdl_deleted(mdl, mdl->mcl->cb->user_data); + + mcap_mdl_unref(mdl); +} + +static gboolean check_cmd_req_length(struct mcap_mcl *mcl, void *cmd, + uint32_t rlen, uint32_t explen, uint8_t rspcod) +{ + mcap_md_req *req; + uint16_t mdl_id; + + if (rlen != explen) { + if (rlen >= sizeof(mcap_md_req)) { + req = cmd; + mdl_id = ntohs(req->mdl); + } else { + /* We can't get mdlid */ + mdl_id = MCAP_MDLID_RESERVED; + } + mcap_send_cmd(mcl, rspcod, MCAP_INVALID_PARAM_VALUE, mdl_id, + NULL, 0); + return FALSE; + } + return TRUE; +} + +static void process_md_create_mdl_req(struct mcap_mcl *mcl, void *cmd, + uint32_t len) +{ + mcap_md_create_mdl_req *req; + struct mcap_mdl *mdl; + uint16_t mdl_id; + uint8_t mdep_id; + uint8_t cfga, conf; + uint8_t rsp; + + if (!check_cmd_req_length(mcl, cmd, len, sizeof(mcap_md_create_mdl_req), + MCAP_MD_CREATE_MDL_RSP)) + return; + + req = cmd; + mdl_id = ntohs(req->mdl); + if (mdl_id < MCAP_MDLID_INITIAL || mdl_id > MCAP_MDLID_FINAL) { + mcap_send_cmd(mcl, MCAP_MD_CREATE_MDL_RSP, MCAP_INVALID_MDL, + mdl_id, NULL, 0); + return; + } + + mdep_id = req->mdep; + if (mdep_id > MCAP_MDEPID_FINAL) { + mcap_send_cmd(mcl, MCAP_MD_CREATE_MDL_RSP, MCAP_INVALID_MDEP, + mdl_id, NULL, 0); + return; + } + + mdl = get_mdl(mcl, mdl_id); + if (mdl && (mdl->state == MDL_WAITING || mdl->state == MDL_DELETING )) { + /* Creation request arrives for a MDL that is being managed + * at current moment */ + mcap_send_cmd(mcl, MCAP_MD_CREATE_MDL_RSP, MCAP_MDL_BUSY, + mdl_id, NULL, 0); + return; + } + + cfga = conf = req->conf; + /* Callback to upper layer */ + rsp = mcl->cb->mdl_conn_req(mcl, mdep_id, mdl_id, &conf, + mcl->cb->user_data); + if (mcl->state == MCL_IDLE) { + /* MCL has been closed int the callback */ + return; + } + + if (cfga != 0 && cfga != conf) { + /* Remote device set default configuration but upper profile */ + /* has changed it. Protocol Error: force closing the MCL by */ + /* remote device using UNSPECIFIED_ERROR response */ + mcap_send_cmd(mcl, MCAP_MD_CREATE_MDL_RSP, + MCAP_UNSPECIFIED_ERROR, mdl_id, NULL, 0); + return; + } + if (rsp != MCAP_SUCCESS) { + mcap_send_cmd(mcl, MCAP_MD_CREATE_MDL_RSP, rsp, mdl_id, + NULL, 0); + return; + } + + if (!mdl) { + mdl = g_new0(struct mcap_mdl, 1); + mdl->mcl = mcap_mcl_ref(mcl); + mdl->mdlid = mdl_id; + mcl->mdls = g_slist_insert_sorted(mcl->mdls, mcap_mdl_ref(mdl), + compare_mdl); + } else if (mdl->state == MDL_CONNECTED) { + /* MCAP specification says that we should close the MCL if + * it is open when we receive a MD_CREATE_MDL_REQ */ + shutdown_mdl(mdl); + } + + mdl->mdep_id = mdep_id; + mdl->state = MDL_WAITING; + + mcl->state = MCL_PENDING; + mcap_send_cmd(mcl, MCAP_MD_CREATE_MDL_RSP, MCAP_SUCCESS, mdl_id, + &conf, 1); +} + +static void process_md_reconnect_mdl_req(struct mcap_mcl *mcl, void *cmd, + uint32_t len) +{ + mcap_md_req *req; + struct mcap_mdl *mdl; + uint16_t mdl_id; + uint8_t rsp; + + if (!check_cmd_req_length(mcl, cmd, len, sizeof(mcap_md_req), + MCAP_MD_RECONNECT_MDL_RSP)) + return; + + req = cmd; + mdl_id = ntohs(req->mdl); + + mdl = get_mdl(mcl, mdl_id); + if (!mdl) { + mcap_send_cmd(mcl, MCAP_MD_RECONNECT_MDL_RSP, MCAP_INVALID_MDL, + mdl_id, NULL, 0); + return; + } else if (mdl->state == MDL_WAITING || mdl->state == MDL_DELETING ) { + /* Creation request arrives for a MDL that is being managed + * at current moment */ + mcap_send_cmd(mcl, MCAP_MD_RECONNECT_MDL_RSP, MCAP_MDL_BUSY, + mdl_id, NULL, 0); + return; + } + + /* Callback to upper layer */ + rsp = mcl->cb->mdl_reconn_req(mdl, mcl->cb->user_data); + if (mcl->state == MCL_IDLE) + return; + + if (rsp != MCAP_SUCCESS) { + mcap_send_cmd(mcl, MCAP_MD_RECONNECT_MDL_RSP, rsp, mdl_id, + NULL, 0); + return; + } + + if (mdl->state == MDL_CONNECTED) + shutdown_mdl(mdl); + + mdl->state = MDL_WAITING; + mcl->state = MCL_PENDING; + mcap_send_cmd(mcl, MCAP_MD_RECONNECT_MDL_RSP, MCAP_SUCCESS, mdl_id, + NULL, 0); +} + +static void process_md_abort_mdl_req(struct mcap_mcl *mcl, void *cmd, + uint32_t len) +{ + mcap_md_req *req; + GSList *l; + struct mcap_mdl *mdl, *abrt; + uint16_t mdl_id; + + if (!check_cmd_req_length(mcl, cmd, len, sizeof(mcap_md_req), + MCAP_MD_ABORT_MDL_RSP)) + return; + + req = cmd; + mdl_id = ntohs(req->mdl); + mcl->state = MCL_CONNECTED; + abrt = NULL; + for (l = mcl->mdls; l; l = l->next) { + mdl = l->data; + if (mdl_id == mdl->mdlid && mdl->state == MDL_WAITING) { + abrt = mdl; + if (mcl->state != MCL_CONNECTED) + break; + continue; + } + if (mdl->state == MDL_CONNECTED && mcl->state != MCL_ACTIVE) + mcl->state = MCL_ACTIVE; + + if (abrt && mcl->state == MCL_ACTIVE) + break; + } + + if (!abrt) { + mcap_send_cmd(mcl, MCAP_MD_ABORT_MDL_RSP, MCAP_INVALID_MDL, + mdl_id, NULL, 0); + return; + } + + mcl->cb->mdl_aborted(abrt, mcl->cb->user_data); + abrt->state = MDL_CLOSED; + mcap_send_cmd(mcl, MCAP_MD_ABORT_MDL_RSP, MCAP_SUCCESS, mdl_id, + NULL, 0); +} + +static void process_md_delete_mdl_req(struct mcap_mcl *mcl, void *cmd, + uint32_t len) +{ + mcap_md_req *req; + struct mcap_mdl *mdl, *aux; + uint16_t mdlid; + gboolean notify; + GSList *l; + + if (!check_cmd_req_length(mcl, cmd, len, sizeof(mcap_md_req), + MCAP_MD_DELETE_MDL_RSP)) + return; + + req = cmd; + mdlid = ntohs(req->mdl); + if (mdlid == MCAP_ALL_MDLIDS) { + notify = FALSE; + g_slist_foreach(mcl->mdls, mcap_del_mdl, ¬ify); + g_slist_free(mcl->mdls); + mcl->mdls = NULL; + mcl->state = MCL_CONNECTED; + /* NULL mdl means ALL_MDLS */ + mcl->cb->mdl_deleted(NULL, mcl->cb->user_data); + goto resp; + } + + if (mdlid < MCAP_MDLID_INITIAL || mdlid > MCAP_MDLID_FINAL) { + mcap_send_cmd(mcl, MCAP_MD_DELETE_MDL_RSP, MCAP_INVALID_MDL, + mdlid, NULL, 0); + return; + } + + for (l = mcl->mdls, mdl = NULL; l; l = l->next) { + aux = l->data; + if (aux->mdlid == mdlid) { + mdl = aux; + break; + } + } + + if (!mdl || mdl->state == MDL_WAITING) { + mcap_send_cmd(mcl, MCAP_MD_DELETE_MDL_RSP, MCAP_INVALID_MDL, + mdlid, NULL, 0); + return; + } + + mcl->mdls = g_slist_remove(mcl->mdls, mdl); + update_mcl_state(mcl); + notify = TRUE; + mcap_del_mdl(mdl, ¬ify); + +resp: + mcap_send_cmd(mcl, MCAP_MD_DELETE_MDL_RSP, MCAP_SUCCESS, mdlid, + NULL, 0); +} + +static void invalid_req_state(struct mcap_mcl *mcl, uint8_t *cmd, uint32_t len) +{ + uint16_t mdlr; + + error("Invalid cmd received (op code = %d) in state %d", cmd[0], + mcl->state); + /* Get previously mdlid sent to generate an appropriate + * response if it is possible */ + mdlr = len < sizeof(mcap_md_req) ? MCAP_MDLID_RESERVED : + ntohs(((mcap_md_req *) cmd)->mdl); + mcap_send_cmd(mcl, cmd[0]+1, MCAP_INVALID_OPERATION, mdlr, NULL, 0); +} + +/* Function used to process commands depending of MCL state */ +static void proc_req_connected(struct mcap_mcl *mcl, uint8_t *cmd, uint32_t len) +{ + switch (cmd[0]) { + case MCAP_MD_CREATE_MDL_REQ: + process_md_create_mdl_req(mcl, cmd, len); + break; + case MCAP_MD_RECONNECT_MDL_REQ: + process_md_reconnect_mdl_req(mcl, cmd, len); + break; + case MCAP_MD_DELETE_MDL_REQ: + process_md_delete_mdl_req(mcl, cmd, len); + break; + default: + invalid_req_state(mcl, cmd, len); + } +} + +static void proc_req_pending(struct mcap_mcl *mcl, uint8_t *cmd, uint32_t len) +{ + if (cmd[0] == MCAP_MD_ABORT_MDL_REQ) + process_md_abort_mdl_req(mcl, cmd, len); + else + invalid_req_state(mcl, cmd, len); +} + +static void proc_req_active(struct mcap_mcl *mcl, uint8_t *cmd, uint32_t len) +{ + switch (cmd[0]) { + case MCAP_MD_CREATE_MDL_REQ: + process_md_create_mdl_req(mcl, cmd, len); + break; + case MCAP_MD_RECONNECT_MDL_REQ: + process_md_reconnect_mdl_req(mcl, cmd, len); + break; + case MCAP_MD_DELETE_MDL_REQ: + process_md_delete_mdl_req(mcl, cmd, len); + break; + default: + invalid_req_state(mcl, cmd, len); + } +} + +/* Function used to process replies */ +static gboolean check_err_rsp(struct mcap_mcl *mcl, mcap_rsp *rsp, + uint32_t rlen, uint32_t len, GError **gerr) +{ + mcap_md_req *cmdlast = (mcap_md_req *) mcl->lcmd; + gint err = MCAP_ERROR_FAILED; + gboolean close = FALSE; + char *msg; + + if (rsp->op == MCAP_ERROR_RSP) { + msg = "MCAP_ERROR_RSP received"; + close = FALSE; + goto fail; + } + + /* Check if the response matches with the last request */ + if (rlen < sizeof(mcap_rsp) || (mcl->lcmd[0] + 1) != rsp->op) { + msg = "Protocol error"; + close = FALSE; + goto fail; + } + + if (rlen < len) { + msg = "Protocol error"; + close = FALSE; + goto fail; + } + + if (rsp->mdl != cmdlast->mdl) { + msg = "MDLID received doesn't match with MDLID sent"; + close = TRUE; + goto fail; + } + + if (rsp->rc == MCAP_REQUEST_NOT_SUPPORTED) { + msg = "Remote does not support opcodes"; + mcl->ctrl &= ~MCAP_CTRL_STD_OP; + goto fail; + } + + if (rsp->rc == MCAP_UNSPECIFIED_ERROR) { + msg = "Unspecified error"; + close = TRUE; + goto fail; + } + + if (rsp->rc != MCAP_SUCCESS) { + msg = error2str(rsp->rc); + err = rsp->rc; + goto fail; + } + + return FALSE; + +fail: + g_set_error(gerr, MCAP_ERROR, err, "%s", msg); + return close; +} + +static gboolean process_md_create_mdl_rsp(struct mcap_mcl *mcl, + mcap_rsp *rsp, uint32_t len) +{ + mcap_md_create_mdl_req *cmdlast = (mcap_md_create_mdl_req *) mcl->lcmd; + struct mcap_mdl_op_cb *conn = mcl->priv_data; + mcap_mdl_operation_conf_cb connect_cb = conn->cb.op_conf; + gpointer user_data = conn->user_data; + struct mcap_mdl *mdl = conn->mdl; + uint8_t conf = cmdlast->conf; + gboolean close; + GError *gerr = NULL; + + close = check_err_rsp(mcl, rsp, len, sizeof(mcap_rsp) + 1, &gerr); + g_free(mcl->lcmd); + mcl->lcmd = NULL; + mcl->req = MCL_AVAILABLE; + + if (gerr) + goto fail; + + /* Check if preferences changed */ + if (conf != 0x00 && rsp->data[0] != conf) { + g_set_error(&gerr, MCAP_ERROR, MCAP_ERROR_FAILED, + "Configuration changed"); + close = TRUE; + goto fail; + } + + connect_cb(mdl, rsp->data[0], gerr, user_data); + return close; + +fail: + connect_cb(NULL, 0, gerr, user_data); + mcl->mdls = g_slist_remove(mcl->mdls, mdl); + mcap_mdl_unref(mdl); + g_error_free(gerr); + update_mcl_state(mcl); + return close; +} + +static gboolean process_md_reconnect_mdl_rsp(struct mcap_mcl *mcl, + mcap_rsp *rsp, uint32_t len) +{ + struct mcap_mdl_op_cb *reconn = mcl->priv_data; + mcap_mdl_operation_cb reconn_cb = reconn->cb.op; + gpointer user_data = reconn->user_data; + struct mcap_mdl *mdl = reconn->mdl; + GError *gerr = NULL; + gboolean close; + + close = check_err_rsp(mcl, rsp, len, sizeof(mcap_rsp), &gerr); + + g_free(mcl->lcmd); + mcl->lcmd = NULL; + mcl->req = MCL_AVAILABLE; + + reconn_cb(mdl, gerr, user_data); + if (!gerr) + return close; + + g_error_free(gerr); + shutdown_mdl(mdl); + update_mcl_state(mcl); + + if (rsp->rc != MCAP_INVALID_MDL) + return close; + + /* Remove cached mdlid */ + mcl->mdls = g_slist_remove(mcl->mdls, mdl); + mcl->cb->mdl_deleted(mdl, mcl->cb->user_data); + mcap_mdl_unref(mdl); + + return close; +} + +static gboolean process_md_abort_mdl_rsp(struct mcap_mcl *mcl, + mcap_rsp *rsp, uint32_t len) +{ + struct mcap_mdl_op_cb *abrt = mcl->priv_data; + mcap_mdl_notify_cb abrt_cb = abrt->cb.notify; + gpointer user_data = abrt->user_data; + struct mcap_mdl *mdl = abrt->mdl; + GError *gerr = NULL; + gboolean close; + + close = check_err_rsp(mcl, rsp, len, sizeof(mcap_rsp), &gerr); + + g_free(mcl->lcmd); + mcl->lcmd = NULL; + mcl->req = MCL_AVAILABLE; + + abrt_cb(gerr, user_data); + shutdown_mdl(mdl); + + if (len >= sizeof(mcap_rsp) && rsp->rc == MCAP_INVALID_MDL) { + mcl->mdls = g_slist_remove(mcl->mdls, mdl); + mcl->cb->mdl_deleted(mdl, mcl->cb->user_data); + mcap_mdl_unref(mdl); + } + + if (gerr) + g_error_free(gerr); + + update_mcl_state(mcl); + + return close; +} + +static void restore_mdl(gpointer elem, gpointer data) +{ + struct mcap_mdl *mdl = elem; + + if (mdl->state == MDL_DELETING) { + if (mdl->dc) + mdl->state = MDL_CONNECTED; + else + mdl->state = MDL_CLOSED; + } else if (mdl->state == MDL_CLOSED) + mdl->mcl->cb->mdl_closed(mdl, mdl->mcl->cb->user_data); +} + +static void check_mdl_del_err(struct mcap_mdl *mdl, mcap_rsp *rsp) +{ + if (rsp->rc != MCAP_ERROR_INVALID_MDL) { + restore_mdl(mdl, NULL); + return; + } + + /* MDL does not exist in remote side, we can delete it */ + mdl->mcl->mdls = g_slist_remove(mdl->mcl->mdls, mdl); + mcap_mdl_unref(mdl); +} + +static gboolean process_md_delete_mdl_rsp(struct mcap_mcl *mcl, mcap_rsp *rsp, + uint32_t len) +{ + struct mcap_mdl_op_cb *del = mcl->priv_data; + struct mcap_mdl *mdl = del->mdl; + mcap_mdl_notify_cb deleted_cb = del->cb.notify; + gpointer user_data = del->user_data; + mcap_md_req *cmdlast = (mcap_md_req *) mcl->lcmd; + uint16_t mdlid = ntohs(cmdlast->mdl); + GError *gerr = NULL; + gboolean close; + gboolean notify = FALSE; + + close = check_err_rsp(mcl, rsp, len, sizeof(mcap_rsp), &gerr); + + g_free(mcl->lcmd); + mcl->lcmd = NULL; + mcl->req = MCL_AVAILABLE; + + if (gerr) { + if (mdl) + check_mdl_del_err(mdl, rsp); + else + g_slist_foreach(mcl->mdls, restore_mdl, NULL); + deleted_cb(gerr, user_data); + g_error_free(gerr); + return close; + } + + if (mdlid == MCAP_ALL_MDLIDS) { + g_slist_foreach(mcl->mdls, mcap_del_mdl, ¬ify); + g_slist_free(mcl->mdls); + mcl->mdls = NULL; + mcl->state = MCL_CONNECTED; + } else { + mcl->mdls = g_slist_remove(mcl->mdls, mdl); + update_mcl_state(mcl); + mcap_del_mdl(mdl, ¬ify); + } + + deleted_cb(gerr, user_data); + + return close; +} + +static void post_process_rsp(struct mcap_mcl *mcl, struct mcap_mdl_op_cb *op) +{ + if (mcl->priv_data != op) { + /* Queued MCAP request in some callback. */ + /* We should not delete the mcl private data */ + free_mcap_mdl_op(op); + } else { + /* This is not a queued request. It's safe */ + /* delete the mcl private data here. */ + free_mcl_priv_data(mcl); + } +} + +static void proc_response(struct mcap_mcl *mcl, void *buf, uint32_t len) +{ + struct mcap_mdl_op_cb *op = mcl->priv_data; + mcap_rsp *rsp = buf; + gboolean close; + + RELEASE_TIMER(mcl); + + switch (mcl->lcmd[0] + 1) { + case MCAP_MD_CREATE_MDL_RSP: + close = process_md_create_mdl_rsp(mcl, rsp, len); + post_process_rsp(mcl, op); + break; + case MCAP_MD_RECONNECT_MDL_RSP: + close = process_md_reconnect_mdl_rsp(mcl, rsp, len); + post_process_rsp(mcl, op); + break; + case MCAP_MD_ABORT_MDL_RSP: + close = process_md_abort_mdl_rsp(mcl, rsp, len); + post_process_rsp(mcl, op); + break; + case MCAP_MD_DELETE_MDL_RSP: + close = process_md_delete_mdl_rsp(mcl, rsp, len); + post_process_rsp(mcl, op); + break; + default: + DBG("Unknown cmd response received (op code = %d)", rsp->op); + close = TRUE; + break; + } + + if (close) { + mcl->mi->mcl_disconnected_cb(mcl, mcl->mi->user_data); + mcap_cache_mcl(mcl); + } +} + +static void proc_cmd(struct mcap_mcl *mcl, uint8_t *cmd, uint32_t len) +{ + GError *gerr = NULL; + + if (cmd[0] > MCAP_MD_SYNC_INFO_IND || + (cmd[0] > MCAP_MD_DELETE_MDL_RSP && + cmd[0] < MCAP_MD_SYNC_CAP_REQ)) { + error("Unknown cmd received (op code = %d)", cmd[0]); + mcap_send_cmd(mcl, MCAP_ERROR_RSP, MCAP_INVALID_OP_CODE, + MCAP_MDLID_RESERVED, NULL, 0); + return; + } + + if (cmd[0] >= MCAP_MD_SYNC_CAP_REQ && + cmd[0] <= MCAP_MD_SYNC_INFO_IND) { + proc_sync_cmd(mcl, cmd, len); + return; + } + + if (!(mcl->ctrl & MCAP_CTRL_STD_OP)) { + /* In case the remote device doesn't work correctly */ + error("Remote device does not support opcodes, cmd ignored"); + return; + } + + if (mcl->req == MCL_WAITING_RSP) { + if (cmd[0] & 0x01) { + /* Request arrived when a response is expected */ + if (mcl->role == MCL_INITIATOR) + /* ignore */ + return; + /* Initiator will ignore our last request */ + RELEASE_TIMER(mcl); + mcl->req = MCL_AVAILABLE; + g_set_error(&gerr, MCAP_ERROR, MCAP_ERROR_REQ_IGNORED, + "Initiator sent a request with more priority"); + mcap_notify_error(mcl, gerr); + proc_req[mcl->state](mcl, cmd, len); + return; + } + proc_response(mcl, cmd, len); + } else if (cmd[0] & 0x01) + proc_req[mcl->state](mcl, cmd, len); +} + +static gboolean mdl_event_cb(GIOChannel *chan, GIOCondition cond, gpointer data) +{ + + struct mcap_mdl *mdl = data; + gboolean notify; + + DBG("Close MDL %d", mdl->mdlid); + + notify = (mdl->state == MDL_CONNECTED); + shutdown_mdl(mdl); + + update_mcl_state(mdl->mcl); + + if (notify) { + /*Callback to upper layer */ + mdl->mcl->cb->mdl_closed(mdl, mdl->mcl->cb->user_data); + } + + return FALSE; +} + +static void mcap_connect_mdl_cb(GIOChannel *chan, GError *conn_err, + gpointer data) +{ + struct mcap_mdl_op_cb *con = data; + struct mcap_mdl *mdl = con->mdl; + mcap_mdl_operation_cb cb = con->cb.op; + gpointer user_data = con->user_data; + + DBG("mdl connect callback"); + + if (conn_err) { + DBG("ERROR: mdl connect callback"); + mdl->state = MDL_CLOSED; + g_io_channel_unref(mdl->dc); + mdl->dc = NULL; + cb(mdl, conn_err, user_data); + return; + } + + mdl->state = MDL_CONNECTED; + mdl->wid = g_io_add_watch_full(mdl->dc, G_PRIORITY_DEFAULT, + G_IO_ERR | G_IO_HUP | G_IO_NVAL, + (GIOFunc) mdl_event_cb, + mcap_mdl_ref(mdl), + (GDestroyNotify) mcap_mdl_unref); + + cb(mdl, conn_err, user_data); +} + +gboolean mcap_connect_mdl(struct mcap_mdl *mdl, uint8_t mode, + uint16_t dcpsm, + mcap_mdl_operation_cb connect_cb, + gpointer user_data, + GDestroyNotify destroy, + GError **err) +{ + struct mcap_mdl_op_cb *con; + + if (mdl->state != MDL_WAITING) { + g_set_error(err, MCAP_ERROR, MCAP_ERROR_INVALID_MDL, + "%s", error2str(MCAP_INVALID_MDL)); + return FALSE; + } + + if ((mode != L2CAP_MODE_ERTM) && (mode != L2CAP_MODE_STREAMING)) { + g_set_error(err, MCAP_ERROR, MCAP_ERROR_INVALID_ARGS, + "Invalid MDL configuration"); + return FALSE; + } + + con = g_new0(struct mcap_mdl_op_cb, 1); + con->mdl = mcap_mdl_ref(mdl); + con->cb.op = connect_cb; + con->destroy = destroy; + con->user_data = user_data; + + mdl->dc = bt_io_connect(BT_IO_L2CAP, mcap_connect_mdl_cb, con, + (GDestroyNotify) free_mcap_mdl_op, err, + BT_IO_OPT_SOURCE_BDADDR, &mdl->mcl->mi->src, + BT_IO_OPT_DEST_BDADDR, &mdl->mcl->addr, + BT_IO_OPT_PSM, dcpsm, + BT_IO_OPT_MTU, MCAP_DC_MTU, + BT_IO_OPT_SEC_LEVEL, mdl->mcl->mi->sec, + BT_IO_OPT_MODE, mode, + BT_IO_OPT_INVALID); + if (!mdl->dc) { + DBG("MDL Connection error"); + mdl->state = MDL_CLOSED; + mcap_mdl_unref(con->mdl); + g_free(con); + return FALSE; + } + + return TRUE; +} + +static gboolean mcl_control_cb(GIOChannel *chan, GIOCondition cond, + gpointer data) +{ + GError *gerr = NULL; + struct mcap_mcl *mcl = data; + int sk, len; + uint8_t buf[MCAP_CC_MTU]; + + if (cond & (G_IO_ERR | G_IO_HUP | G_IO_NVAL)) + goto fail; + + sk = g_io_channel_unix_get_fd(chan); + len = read(sk, buf, sizeof(buf)); + if (len < 0) + goto fail; + + proc_cmd(mcl, buf, (uint32_t) len); + return TRUE; + +fail: + if (mcl->state != MCL_IDLE) { + if (mcl->req == MCL_WAITING_RSP) { + /* notify error in pending callback */ + g_set_error(&gerr, MCAP_ERROR, MCAP_ERROR_MCL_CLOSED, + "MCL closed"); + mcap_notify_error(mcl, gerr); + g_error_free(gerr); + } + mcl->mi->mcl_disconnected_cb(mcl, mcl->mi->user_data); + } + mcap_cache_mcl(mcl); + return FALSE; +} + +static void mcap_connect_mcl_cb(GIOChannel *chan, GError *conn_err, + gpointer user_data) +{ + char dstaddr[18]; + struct connect_mcl *con = user_data; + struct mcap_mcl *aux, *mcl = con->mcl; + mcap_mcl_connect_cb connect_cb = con->connect_cb; + gpointer data = con->user_data; + GError *gerr = NULL; + + mcl->ctrl &= ~MCAP_CTRL_CONN; + + if (conn_err) { + if (mcl->ctrl & MCAP_CTRL_FREE) { + mcap_mcl_release(mcl); + mcl->mi->mcl_uncached_cb(mcl, mcl->mi->user_data); + } + connect_cb(NULL, conn_err, data); + return; + } + + ba2str(&mcl->addr, dstaddr); + + aux = find_mcl(mcl->mi->mcls, &mcl->addr); + if (aux) { + /* Double MCL connection case */ + error("MCL error: Device %s is already connected", dstaddr); + g_set_error(&gerr, MCAP_ERROR, MCAP_ERROR_ALREADY_EXISTS, + "MCL %s is already connected", dstaddr); + connect_cb(NULL, gerr, data); + g_error_free(gerr); + return; + } + + mcl->state = MCL_CONNECTED; + mcl->role = MCL_INITIATOR; + mcl->req = MCL_AVAILABLE; + mcl->ctrl |= MCAP_CTRL_STD_OP; + + mcap_sync_init(mcl); + + if (mcl->ctrl & MCAP_CTRL_CACHED) + mcap_uncache_mcl(mcl); + else { + mcl->ctrl &= ~MCAP_CTRL_FREE; + mcl->mi->mcls = g_slist_prepend(mcl->mi->mcls, + mcap_mcl_ref(mcl)); + } + + mcl->wid = g_io_add_watch_full(mcl->cc, G_PRIORITY_DEFAULT, + G_IO_IN | G_IO_ERR | G_IO_HUP | G_IO_NVAL, + (GIOFunc) mcl_control_cb, + mcap_mcl_ref(mcl), + (GDestroyNotify) mcap_mcl_unref); + connect_cb(mcl, gerr, data); +} + +static void set_mdl_properties(GIOChannel *chan, struct mcap_mdl *mdl) +{ + struct mcap_mcl *mcl = mdl->mcl; + + mdl->state = MDL_CONNECTED; + mdl->dc = g_io_channel_ref(chan); + mdl->wid = g_io_add_watch_full(mdl->dc, G_PRIORITY_DEFAULT, + G_IO_ERR | G_IO_HUP | G_IO_NVAL, + (GIOFunc) mdl_event_cb, + mcap_mdl_ref(mdl), + (GDestroyNotify) mcap_mdl_unref); + + mcl->state = MCL_ACTIVE; + mcl->cb->mdl_connected(mdl, mcl->cb->user_data); +} + +static void mcl_io_destroy(gpointer data) +{ + struct connect_mcl *con = data; + + mcap_mcl_unref(con->mcl); + if (con->destroy) + con->destroy(con->user_data); + g_free(con); +} + +gboolean mcap_create_mcl(struct mcap_instance *mi, + const bdaddr_t *addr, + uint16_t ccpsm, + mcap_mcl_connect_cb connect_cb, + gpointer user_data, + GDestroyNotify destroy, + GError **err) +{ + struct mcap_mcl *mcl; + struct connect_mcl *con; + + mcl = find_mcl(mi->mcls, addr); + if (mcl) { + g_set_error(err, MCAP_ERROR, MCAP_ERROR_ALREADY_EXISTS, + "MCL is already connected."); + return FALSE; + } + + mcl = find_mcl(mi->cached, addr); + if (!mcl) { + mcl = g_new0(struct mcap_mcl, 1); + mcl->mi = mcap_instance_ref(mi); + mcl->state = MCL_IDLE; + bacpy(&mcl->addr, addr); + set_default_cb(mcl); + mcl->next_mdl = (rand() % MCAP_MDLID_FINAL) + 1; + } + + mcl->ctrl |= MCAP_CTRL_CONN; + + con = g_new0(struct connect_mcl, 1); + con->mcl = mcap_mcl_ref(mcl); + con->connect_cb = connect_cb; + con->destroy = destroy; + con->user_data = user_data; + + mcl->cc = bt_io_connect(BT_IO_L2CAP, mcap_connect_mcl_cb, con, + mcl_io_destroy, err, + BT_IO_OPT_SOURCE_BDADDR, &mi->src, + BT_IO_OPT_DEST_BDADDR, addr, + BT_IO_OPT_PSM, ccpsm, + BT_IO_OPT_MTU, MCAP_CC_MTU, + BT_IO_OPT_SEC_LEVEL, mi->sec, + BT_IO_OPT_MODE, L2CAP_MODE_ERTM, + BT_IO_OPT_INVALID); + if (!mcl->cc) { + mcl->ctrl &= ~MCAP_CTRL_CONN; + if (mcl->ctrl & MCAP_CTRL_FREE) { + mcap_mcl_release(mcl); + mcl->mi->mcl_uncached_cb(mcl, mcl->mi->user_data); + } + mcap_mcl_unref(con->mcl); + g_free(con); + return FALSE; + } + + return TRUE; +} + +static void connect_dc_event_cb(GIOChannel *chan, GError *gerr, + gpointer user_data) +{ + struct mcap_instance *mi = user_data; + struct mcap_mcl *mcl; + struct mcap_mdl *mdl; + GError *err = NULL; + bdaddr_t dst; + GSList *l; + + if (gerr) + return; + + bt_io_get(chan, BT_IO_L2CAP, &err, + BT_IO_OPT_DEST_BDADDR, &dst, + BT_IO_OPT_INVALID); + if (err) { + error("%s", err->message); + g_error_free(err); + goto drop; + } + + mcl = find_mcl(mi->mcls, &dst); + if (!mcl || mcl->state != MCL_PENDING) + goto drop; + + for (l = mcl->mdls; l; l = l->next) { + mdl = l->data; + if (mdl->state == MDL_WAITING) { + set_mdl_properties(chan, mdl); + return; + } + } + +drop: + g_io_channel_shutdown(chan, TRUE, NULL); +} + +static void set_mcl_conf(GIOChannel *chan, struct mcap_mcl *mcl) +{ + gboolean reconn; + + mcl->state = MCL_CONNECTED; + mcl->role = MCL_ACCEPTOR; + mcl->req = MCL_AVAILABLE; + mcl->cc = g_io_channel_ref(chan); + mcl->ctrl |= MCAP_CTRL_STD_OP; + + mcap_sync_init(mcl); + + reconn = (mcl->ctrl & MCAP_CTRL_CACHED); + if (reconn) + mcap_uncache_mcl(mcl); + else + mcl->mi->mcls = g_slist_prepend(mcl->mi->mcls, + mcap_mcl_ref(mcl)); + + mcl->wid = g_io_add_watch_full(mcl->cc, G_PRIORITY_DEFAULT, + G_IO_IN | G_IO_ERR | G_IO_HUP | G_IO_NVAL, + (GIOFunc) mcl_control_cb, + mcap_mcl_ref(mcl), + (GDestroyNotify) mcap_mcl_unref); + + /* Callback to report new MCL */ + if (reconn) + mcl->mi->mcl_reconnected_cb(mcl, mcl->mi->user_data); + else + mcl->mi->mcl_connected_cb(mcl, mcl->mi->user_data); +} + +static void connect_mcl_event_cb(GIOChannel *chan, GError *gerr, + gpointer user_data) +{ + struct mcap_instance *mi = user_data; + struct mcap_mcl *mcl; + bdaddr_t dst; + char address[18], srcstr[18]; + GError *err = NULL; + + if (gerr) + return; + + bt_io_get(chan, BT_IO_L2CAP, &err, + BT_IO_OPT_DEST_BDADDR, &dst, + BT_IO_OPT_DEST, address, + BT_IO_OPT_INVALID); + if (err) { + error("%s", err->message); + g_error_free(err); + goto drop; + } + + ba2str(&mi->src, srcstr); + mcl = find_mcl(mi->mcls, &dst); + if (mcl) { + error("Control channel already created with %s on adapter %s", + address, srcstr); + goto drop; + } + + mcl = find_mcl(mi->cached, &dst); + if (!mcl) { + mcl = g_new0(struct mcap_mcl, 1); + mcl->mi = mcap_instance_ref(mi); + bacpy(&mcl->addr, &dst); + set_default_cb(mcl); + mcl->next_mdl = (rand() % MCAP_MDLID_FINAL) + 1; + } + + set_mcl_conf(chan, mcl); + + return; +drop: + g_io_channel_shutdown(chan, TRUE, NULL); +} + +struct mcap_instance *mcap_create_instance(bdaddr_t *src, + BtIOSecLevel sec, + uint16_t ccpsm, + uint16_t dcpsm, + mcap_mcl_event_cb mcl_connected, + mcap_mcl_event_cb mcl_reconnected, + mcap_mcl_event_cb mcl_disconnected, + mcap_mcl_event_cb mcl_uncached, + mcap_info_ind_event_cb mcl_sync_info_ind, + gpointer user_data, + GError **gerr) +{ + struct mcap_instance *mi; + + if (sec < BT_IO_SEC_MEDIUM) { + g_set_error(gerr, MCAP_ERROR, MCAP_ERROR_INVALID_ARGS, + "Security level can't be minor of %d", + BT_IO_SEC_MEDIUM); + return NULL; + } + + if (!(mcl_connected && mcl_reconnected && + mcl_disconnected && mcl_uncached)) { + g_set_error(gerr, MCAP_ERROR, MCAP_ERROR_INVALID_ARGS, + "The callbacks can't be null"); + return NULL; + } + + mi = g_new0(struct mcap_instance, 1); + + bacpy(&mi->src, src); + + mi->sec = sec; + mi->mcl_connected_cb = mcl_connected; + mi->mcl_reconnected_cb = mcl_reconnected; + mi->mcl_disconnected_cb = mcl_disconnected; + mi->mcl_uncached_cb = mcl_uncached; + mi->mcl_sync_infoind_cb = mcl_sync_info_ind; + mi->user_data = user_data; + mi->csp_enabled = FALSE; + + /* Listen incoming connections in control channel */ + mi->ccio = bt_io_listen(BT_IO_L2CAP, connect_mcl_event_cb, NULL, mi, + NULL, gerr, + BT_IO_OPT_SOURCE_BDADDR, &mi->src, + BT_IO_OPT_PSM, ccpsm, + BT_IO_OPT_MTU, MCAP_CC_MTU, + BT_IO_OPT_SEC_LEVEL, sec, + BT_IO_OPT_MODE, L2CAP_MODE_ERTM, + BT_IO_OPT_INVALID); + if (!mi->ccio) { + error("%s", (*gerr)->message); + g_free(mi); + return NULL; + } + + /* Listen incoming connections in data channels */ + mi->dcio = bt_io_listen(BT_IO_L2CAP, connect_dc_event_cb, NULL, mi, + NULL, gerr, + BT_IO_OPT_SOURCE_BDADDR, &mi->src, + BT_IO_OPT_PSM, dcpsm, + BT_IO_OPT_MTU, MCAP_DC_MTU, + BT_IO_OPT_SEC_LEVEL, sec, + BT_IO_OPT_INVALID); + if (!mi->dcio) { + g_io_channel_shutdown(mi->ccio, TRUE, NULL); + g_io_channel_unref(mi->ccio); + mi->ccio = NULL; + error("%s", (*gerr)->message); + g_free(mi); + return NULL; + } + + /* Initialize random seed to generate mdlids for this instance */ + srand(time(NULL)); + + return mcap_instance_ref(mi);; +} + +void mcap_release_instance(struct mcap_instance *mi) +{ + GSList *l; + + if (!mi) + return; + + if (mi->ccio) { + g_io_channel_shutdown(mi->ccio, TRUE, NULL); + g_io_channel_unref(mi->ccio); + mi->ccio = NULL; + } + + if (mi->dcio) { + g_io_channel_shutdown(mi->dcio, TRUE, NULL); + g_io_channel_unref(mi->dcio); + mi->dcio = NULL; + } + + for (l = mi->mcls; l; l = l->next) { + mcap_mcl_release(l->data); + mcap_mcl_unref(l->data); + } + + g_slist_free(mi->mcls); + mi->mcls = NULL; + + for (l = mi->cached; l; l = l->next) { + mcap_mcl_release(l->data); + mcap_mcl_unref(l->data); + } + + g_slist_free(mi->cached); + mi->cached = NULL; +} + +struct mcap_instance *mcap_instance_ref(struct mcap_instance *mi) +{ + mi->ref++; + + DBG("mcap_instance_ref(%p): ref=%d", mi, mi->ref); + + return mi; +} + +void mcap_instance_unref(struct mcap_instance *mi) +{ + mi->ref--; + + DBG("mcap_instance_unref(%p): ref=%d", mi, mi->ref); + + if (mi->ref > 0) + return; + + mcap_release_instance(mi); + g_free(mi); +} + +uint16_t mcap_get_ctrl_psm(struct mcap_instance *mi, GError **err) +{ + uint16_t lpsm; + + if (!(mi && mi->ccio)) { + g_set_error(err, MCAP_ERROR, MCAP_ERROR_INVALID_ARGS, + "Invalid MCAP instance"); + return 0; + } + + if (!bt_io_get(mi->ccio, BT_IO_L2CAP, err, + BT_IO_OPT_PSM, &lpsm, + BT_IO_OPT_INVALID)) + return 0; + + return lpsm; +} + +uint16_t mcap_get_data_psm(struct mcap_instance *mi, GError **err) +{ + uint16_t lpsm; + + if (!(mi && mi->dcio)) { + g_set_error(err, MCAP_ERROR, MCAP_ERROR_INVALID_ARGS, + "Invalid MCAP instance"); + return 0; + } + + if (!bt_io_get(mi->dcio, BT_IO_L2CAP, err, + BT_IO_OPT_PSM, &lpsm, + BT_IO_OPT_INVALID)) + return 0; + + return lpsm; +} + +gboolean mcap_set_data_chan_mode(struct mcap_instance *mi, uint8_t mode, + GError **err) +{ + if (!(mi && mi->dcio)) { + g_set_error(err, MCAP_ERROR, MCAP_ERROR_INVALID_ARGS, + "Invalid MCAP instance"); + return FALSE; + } + + return bt_io_set(mi->dcio, BT_IO_L2CAP, err, BT_IO_OPT_MODE, mode, + BT_IO_OPT_INVALID); +} + +struct mcap_mdl *mcap_mdl_ref(struct mcap_mdl *mdl) +{ + mdl->ref++; + + DBG("mcap_mdl_ref(%p): ref=%d", mdl, mdl->ref); + + return mdl; +} + +void mcap_mdl_unref(struct mcap_mdl *mdl) +{ + mdl->ref--; + + DBG("mcap_mdl_unref(%p): ref=%d", mdl, mdl->ref); + + if (mdl->ref > 0) + return; + + free_mdl(mdl); +} |