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-rw-r--r--isi/client.c360
1 files changed, 0 insertions, 360 deletions
diff --git a/isi/client.c b/isi/client.c
deleted file mode 100644
index f8f01711..00000000
--- a/isi/client.c
+++ /dev/null
@@ -1,360 +0,0 @@
-/*
- * This file is part of oFono - Open Source Telephony
- *
- * Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
- *
- * Contact: Rémi Denis-Courmont <remi.denis-courmont@nokia.com>
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * version 2 as published by the Free Software Foundation.
- *
- * 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 <stdint.h>
-#include <string.h>
-#include <stdlib.h>
-#include <assert.h>
-#include <sys/types.h>
-#include <sys/socket.h>
-#include <sys/uio.h>
-#include <errno.h>
-#include <glib.h>
-
-#include "socket.h"
-#include "client.h"
-
-struct isi_client {
- uint8_t resource;
-
- /* Requests */
- int fd;
- guint source;
- uint8_t prev[256], next[256];
- guint timeout[256];
- isi_client_cb_t func[256];
- void *data[256];
-
- /* Indications */
- struct {
- int fd;
- guint source;
- uint16_t count;
- isi_ind_cb_t func[256];
- void *data[256];
- } ind;
-};
-
-static gboolean isi_callback(GIOChannel *, GIOCondition, gpointer);
-static gboolean isi_timeout(gpointer);
-
-static inline struct isi_request *isi_req(struct isi_client *cl, uint8_t id)
-{
- return (struct isi_request *)(((uint8_t *)(void *)cl) + id);
-}
-
-static inline uint8_t isi_id(void *ptr)
-{
- return ((uintptr_t)ptr) & 255;
-}
-
-static inline struct isi_client *isi_cl(void *ptr)
-{
- return (struct isi_client *)(((uintptr_t)ptr) & ~255);
-}
-
-/**
- * Create an ISI client.
- * @param resource Phonet resource ID for the client
- * @return NULL on error (see errno), an isi_client pointer on success,
- */
-struct isi_client *isi_client_create(uint8_t resource)
-{
- void *ptr;
- struct isi_client *cl;
- GIOChannel *channel;
- unsigned i;
-
- if (G_UNLIKELY(posix_memalign(&ptr, 256, sizeof(*cl))))
- abort();
- cl = ptr;
- cl->resource = resource;
- memset(cl->timeout, 0, sizeof(cl->timeout));
- for (i = 0; i < 256; i++) {
- cl->data[i] = cl->ind.data[i] = NULL;
- cl->func[i] = NULL;
- cl->ind.func[i] = NULL;
- }
- cl->ind.count = 0;
-
- /* Reserve 0 as head of available IDs, and 255 as head of busy ones */
- cl->prev[0] = 254;
- for (i = 0; i < 254; i++) {
- cl->next[i] = i + 1;
- cl->prev[i + 1] = i;
- }
- cl->next[254] = 0;
- cl->prev[255] = cl->next[255] = 255;
-
- channel = phonet_new(resource);
- if (channel == NULL) {
- free(cl);
- return NULL;
- }
- cl->fd = g_io_channel_unix_get_fd(channel);
- cl->source = g_io_add_watch(channel,
- G_IO_IN|G_IO_ERR|G_IO_HUP|G_IO_NVAL,
- isi_callback, cl);
- g_io_channel_unref(channel);
- return cl;
-}
-
-/**
- * Destroys an ISI client, cancels all pending transactions and subscriptions.
- * @param client client to destroy
- */
-void isi_client_destroy(struct isi_client *client)
-{
- unsigned id;
-
- g_source_remove(client->source);
- for (id = 0; id < 256; id++)
- if (client->timeout[id] > 0)
- g_source_remove(client->timeout[id]);
- if (client->ind.count > 0)
- g_source_remove(client->ind.source);
- free(client);
-}
-
-/**
- * Make an ISI request and register a callback to process the response(s) to
- * the resulting transaction.
- * @param cl ISI client (from isi_client_create())
- * @param buf pointer to request payload
- * @param len request payload byte length
- * @param cb callback to process response(s)
- * @param opaque data for the callback
- */
-struct isi_request *isi_request_make(struct isi_client *cl,
- const void *__restrict buf, size_t len,
- unsigned timeout,
- isi_client_cb_t cb, void *opaque)
-{
- struct iovec iov[2];
- ssize_t ret;
- uint8_t id = cl->next[0];
-
- if (id == 0) {
- errno = EBUSY;
- return NULL;
- }
- if (cb == NULL) {
- errno = EINVAL;
- return NULL;
- }
- iov[0].iov_base = &id;
- iov[0].iov_len = 1;
- iov[1].iov_base = (void *)buf;
- iov[1].iov_len = len;
- ret = writev(cl->fd, iov, sizeof(iov) / sizeof(iov[0]));
- if (ret == -1)
- return NULL;
- if (ret != (ssize_t)(len + 2)) {
- errno = EMSGSIZE;
- return NULL;
- }
-
- cl->func[id] = cb;
- cl->data[id] = opaque;
-
- /* Remove transaction from available list */
- cl->next[0] = cl->next[id];
- cl->prev[cl->next[id]] = 0;
- /* Insert into busy list */
- cl->next[id] = cl->next[255];
- cl->prev[cl->next[id]] = id;
- cl->next[255] = id;
- cl->prev[id] = 255;
-
- if (timeout > 0)
- cl->timeout[id] = g_timeout_add_seconds(timeout,
- isi_timeout, cl);
- else
- cl->timeout[id] = 0;
- return isi_req(cl, id);
-}
-
-/**
- * Cancels a pending request, i.e. stop waiting for responses and cancels the
- * timeout.
- * @param req request to cancel
- */
-void isi_request_cancel(struct isi_request *req)
-{
- struct isi_client *cl = isi_cl(req);
- uint8_t id = isi_id(req);
-
- cl->func[id] = NULL;
- cl->data[id] = NULL;
-
- /* Remove transaction from pending circular list */
- cl->prev[cl->next[id]] = cl->prev[id];
- cl->next[cl->prev[id]] = cl->next[id];
- /* Insert transaction into available circular list */
- cl->prev[id] = cl->prev[0];
- cl->prev[0] = id;
- cl->next[id] = 0;
- cl->next[cl->prev[id]] = id;
-
- if (cl->timeout[id] > 0) {
- g_source_remove(cl->timeout[id]);
- cl->timeout[id] = 0;
- }
-}
-
-#define PN_COMMGR 0x10
-#define PNS_SUBSCRIBED_RESOURCES_IND 0x10
-
-static int isi_indication_init(struct isi_client *cl)
-{
- uint8_t msg[] = {
- 0, PNS_SUBSCRIBED_RESOURCES_IND, 1, cl->resource,
- };
- GIOChannel *channel = phonet_new(PN_COMMGR);
-
- if (channel == NULL)
- return errno;
- /* Send subscribe indication */
- cl->ind.fd = g_io_channel_unix_get_fd(channel);
- send(cl->ind.fd, msg, 4, 0);
- cl->ind.source = g_io_add_watch(channel,
- G_IO_IN|G_IO_ERR|G_IO_HUP|G_IO_NVAL,
- isi_callback, cl);
- return 0;
-}
-
-static void isi_indication_deinit(struct isi_client *client)
-{
- uint8_t msg[] = {
- 0, PNS_SUBSCRIBED_RESOURCES_IND, 0,
- };
-
- /* Send empty subscribe indication */
- send(client->ind.fd, msg, 3, 0);
- g_source_remove(client->ind.source);
-}
-
-/**
- * Subscribe to a given indication type for the resource that an ISI client
- * is associated with. If the same type was already subscrived, the old
- * subscription is overriden.
- * @param cl ISI client (fomr isi_client_create())
- * @param type indication type
- * @param cb callback to process received indications
- * @param data data for the callback
- * @return 0 on success, a system error code otherwise.
- */
-int isi_subscribe(struct isi_client *cl, uint8_t type,
- isi_ind_cb_t cb, void *data)
-{
- if (cb == NULL)
- return EINVAL;
-
- if (cl->ind.func[type] == NULL) {
- if (cl->ind.count == 0) {
- int ret = isi_indication_init(cl);
- if (ret)
- return ret;
- }
- cl->ind.count++;
- }
- cl->ind.func[type] = cb;
- cl->ind.data[type] = data;
- return 0;
-}
-
-/**
- * Unsubscribe from a given indication type.
- * @param client ISI client (from isi_client_create())
- * @param type indication type.
- */
-void isi_unsubscribe(struct isi_client *client, uint8_t type)
-{
- /* Unsubscribe */
- if (client->ind.func[type] == NULL)
- return;
- client->ind.func[type] = NULL;
- if (--client->ind.count == 0)
- isi_indication_deinit(client);
-}
-
-/* Data callback for both responses and indications */
-static gboolean isi_callback(GIOChannel *channel, GIOCondition cond,
- gpointer data)
-{
- struct isi_client *cl = data;
- int fd = g_io_channel_unix_get_fd(channel);
- bool indication = (fd != cl->fd);
- int len;
-
- if (cond & (G_IO_NVAL|G_IO_HUP)) {
- g_warning("Unexpected event on Phonet channel %p", channel);
- return FALSE;
- }
-
- len = phonet_peek_length(channel);
- {
- uint32_t buf[(len + 3) / 4];
- uint16_t obj;
- uint8_t res, id;
-
- len = phonet_read(channel, buf, len, &obj, &res);
- if (len < 2 || res != cl->resource)
- return TRUE;
- memcpy(&id, buf, 1); /* Transaction ID or indication type */
- if (indication) {
- if (cl->ind.func[id] == NULL)
- return TRUE; /* Unsubscribed indication */
- cl->ind.func[id](cl, buf + 1, len - 1, obj,
- cl->ind.data[id]);
- } else {
- if (cl->func[id] == NULL)
- return TRUE; /* Bad transaction ID */
- if ((cl->func[id])(cl, buf + 1, len - 1, obj,
- cl->data[id]))
- isi_request_cancel(isi_req(cl, id));
- }
- }
- return TRUE;
-}
-
-static gboolean isi_timeout(gpointer data)
-{
- struct isi_request *req = data;
- struct isi_client *cl = isi_cl(req);
- uint8_t id = isi_id(req);
-
- assert(cl->func[id]);
- (cl->func[id])(cl, NULL, 0, 0, cl->data[id]);
- isi_request_cancel(req);
- return FALSE;
-}
-
-int isi_client_error(const struct isi_client *client)
-{ /* The only possible error at the moment */
- return ETIMEDOUT;
-}
generated by cgit v1.2.3 (git 2.39.1) at 2025-07-23 17:53:56 +0000