/*
This file is part of GNUnet.
- (C) 2009, 2010 Christian Grothoff (and other contributing authors)
+ (C) 2009, 2010, 2012 Christian Grothoff (and other contributing authors)
GNUnet is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published
};
-
/**
* Context for handling the shutdown of a service.
*/
*/
void *cont_cls;
+ /**
+ * Handle for transmission request.
+ */
+ struct GNUNET_CLIENT_TransmitHandle *th;
+
/**
* Result of the operation
*/
static size_t
write_shutdown (void *cls, size_t size, void *buf)
{
- struct GNUNET_MessageHeader *msg;
struct ShutdownContext *shutdown_ctx = cls;
+ struct GNUNET_MessageHeader *msg;
+ shutdown_ctx->th = NULL;
if (size < sizeof (struct GNUNET_MessageHeader))
{
LOG (GNUNET_ERROR_TYPE_WARNING,
shutdown_ctx->sock = sock;
shutdown_ctx->timeout = GNUNET_TIME_relative_to_absolute (timeout);
shutdown_ctx->confirmed = GNUNET_ARM_PROCESS_COMMUNICATION_ERROR;
- /* FIXME: store return value? */
- GNUNET_CLIENT_notify_transmit_ready (sock,
- sizeof (struct GNUNET_MessageHeader),
- timeout, GNUNET_YES, &write_shutdown,
- shutdown_ctx);
+ shutdown_ctx->th = GNUNET_CLIENT_notify_transmit_ready (sock,
+ sizeof (struct GNUNET_MessageHeader),
+ timeout, GNUNET_NO, &write_shutdown,
+ shutdown_ctx);
}
}
+/**
+ * Internal state for a list request with ARM.
+ */
+struct ListRequestContext
+{
+
+ /**
+ * Pointer to our handle with ARM.
+ */
+ struct GNUNET_ARM_Handle *h;
+
+ /**
+ * Function to call with a status code for the requested operation.
+ */
+ GNUNET_ARM_List_Callback callback;
+
+ /**
+ * Closure for "callback".
+ */
+ void *cls;
+
+ /**
+ * Timeout for the operation.
+ */
+ struct GNUNET_TIME_Absolute timeout;
+};
+
+
+/**
+ * Process a response from ARM for the list request.
+ *
+ * @param cls the list request context
+ * @param msg the response
+ */
+static void
+handle_list_response (void *cls, const struct GNUNET_MessageHeader *msg)
+{
+ struct ListRequestContext *sc = cls;
+ const struct GNUNET_ARM_ListResultMessage *res;
+ const char *pos;
+ uint16_t size_check;
+ uint16_t rcount;
+ uint16_t msize;
+
+ if (NULL == msg)
+ {
+ LOG (GNUNET_ERROR_TYPE_WARNING,
+ "Error receiving response to LIST request from ARM\n");
+ GNUNET_CLIENT_disconnect (sc->h->client, GNUNET_NO);
+ sc->h->client = GNUNET_CLIENT_connect ("arm", sc->h->cfg);
+ GNUNET_assert (NULL != sc->h->client);
+ if (sc->callback != NULL)
+ sc->callback (sc->cls, GNUNET_ARM_PROCESS_COMMUNICATION_ERROR, 0, NULL);
+ GNUNET_free (sc);
+ return;
+ }
+
+ if (NULL == sc->callback)
+ {
+ GNUNET_break (0);
+ GNUNET_free (sc);
+ return;
+ }
+ msize = ntohs (msg->size);
+ if ( (msize < sizeof ( struct GNUNET_ARM_ListResultMessage)) ||
+ (ntohs (msg->type) != GNUNET_MESSAGE_TYPE_ARM_LIST_RESULT) )
+ {
+ GNUNET_break (0);
+ sc->callback (sc->cls, GNUNET_NO, 0, NULL);
+ GNUNET_free (sc);
+ return;
+ }
+ size_check = 0;
+ res = (const struct GNUNET_ARM_ListResultMessage *) msg;
+ rcount = ntohs (res->count);
+ {
+ const char *list[rcount];
+ unsigned int i;
+
+ pos = (const char *)&res[1];
+ for (i=0; i<rcount; i++)
+ {
+ const char *end = memchr (pos, 0, msize - size_check);
+ if (NULL == end)
+ {
+ GNUNET_break (0);
+ sc->callback (sc->cls, GNUNET_NO, 0, NULL);
+ GNUNET_free (sc);
+ return;
+ }
+ list[i] = pos;
+ size_check += (end - pos) + 1;
+ pos = end + 1;
+ }
+ sc->callback (sc->cls, GNUNET_YES, rcount, list);
+ }
+ GNUNET_free (sc);
+}
+
+
+/**
+ * List all running services.
+ *
+ * @param h handle to ARM
+ * @param timeout how long to wait before failing for good
+ * @param cb callback to invoke when service is ready
+ * @param cb_cls closure for callback
+ */
+void
+GNUNET_ARM_list_running_services (struct GNUNET_ARM_Handle *h,
+ struct GNUNET_TIME_Relative timeout,
+ GNUNET_ARM_List_Callback cb, void *cb_cls)
+{
+ struct ListRequestContext *sctx;
+ struct GNUNET_MessageHeader msg;
+ struct GNUNET_CLIENT_Connection *client;
+
+ if (h->client == NULL)
+ {
+ client = GNUNET_CLIENT_connect ("arm", h->cfg);
+ if (client == NULL)
+ {
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "arm_api, GNUNET_CLIENT_connect returned NULL\n");
+ cb (cb_cls, GNUNET_ARM_PROCESS_COMMUNICATION_ERROR, 0, NULL);
+ return;
+ }
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "arm_api, GNUNET_CLIENT_connect returned non-NULL\n");
+ h->client = client;
+ }
+
+ sctx = GNUNET_malloc (sizeof (struct RequestContext));
+ sctx->h = h;
+ sctx->callback = cb;
+ sctx->cls = cb_cls;
+ sctx->timeout = GNUNET_TIME_relative_to_absolute (timeout);
+ msg.size = htons (sizeof (struct GNUNET_MessageHeader));
+ msg.type = htons (GNUNET_MESSAGE_TYPE_ARM_LIST);
+
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "Requesting LIST from ARM service with timeout: %llu ms\n",
+ (unsigned long long)timeout.rel_value);
+
+ if (GNUNET_OK !=
+ GNUNET_CLIENT_transmit_and_get_response (sctx->h->client,
+ &msg,
+ GNUNET_TIME_absolute_get_remaining
+ (sctx->timeout),
+ GNUNET_YES,
+ &handle_list_response,
+ sctx))
+ {
+ LOG (GNUNET_ERROR_TYPE_WARNING,
+ "Error while trying to transmit request to list services to ARM\n");
+ if (cb != NULL)
+ cb (cb_cls, GNUNET_SYSERR, 0, NULL);
+ GNUNET_free (sctx);
+ return;
+ }
+}
+
/* end of arm_api.c */
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