/*
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
*/
#include "platform.h"
#include "gnunet_arm_service.h"
-#include "gnunet_client_lib.h"
-#include "gnunet_getopt_lib.h"
-#include "gnunet_os_lib.h"
+#include "gnunet_util_lib.h"
#include "gnunet_protocols.h"
-#include "gnunet_server_lib.h"
#include "arm.h"
#define LOG(kind,...) GNUNET_log_from (kind, "arm-api",__VA_ARGS__)
};
-
/**
* Context for handling the shutdown of a service.
*/
void *cont_cls;
/**
- * We received a confirmation that the service will shut down.
+ * Handle for transmission request.
*/
- int confirmed;
+ struct GNUNET_CLIENT_TransmitHandle *th;
};
+
/**
* Handler receiving response to service shutdown requests.
* First call with NULL: service misbehaving, or something.
{
struct ShutdownContext *shutdown_ctx = cls;
- if ((msg == NULL) && (shutdown_ctx->confirmed != GNUNET_YES))
+ if (NULL != msg)
{
-#if DEBUG_ARM
- /* Means the other side closed the connection and never confirmed a shutdown */
- LOG (GNUNET_ERROR_TYPE_DEBUG, "Service handle shutdown before ACK!\n");
-#endif
- if (shutdown_ctx->cont != NULL)
- shutdown_ctx->cont (shutdown_ctx->cont_cls, GNUNET_SYSERR);
- GNUNET_SCHEDULER_cancel (shutdown_ctx->cancel_task);
- GNUNET_CLIENT_disconnect (shutdown_ctx->sock, GNUNET_NO);
- GNUNET_free (shutdown_ctx);
- }
- else if ((msg == NULL) && (shutdown_ctx->confirmed == GNUNET_YES))
- {
-#if DEBUG_ARM
- LOG (GNUNET_ERROR_TYPE_DEBUG, "Service shutdown complete.\n");
-#endif
- if (shutdown_ctx->cont != NULL)
- shutdown_ctx->cont (shutdown_ctx->cont_cls, GNUNET_NO);
-
+ /* We just expected a disconnect! Report the error and be done with it... */
+ GNUNET_break (0);
+ shutdown_ctx->cont (shutdown_ctx->cont_cls, GNUNET_ARM_PROCESS_COMMUNICATION_ERROR);
GNUNET_SCHEDULER_cancel (shutdown_ctx->cancel_task);
- GNUNET_CLIENT_disconnect (shutdown_ctx->sock, GNUNET_NO);
+ GNUNET_CLIENT_disconnect (shutdown_ctx->sock);
GNUNET_free (shutdown_ctx);
+ return;
}
- else
- {
- GNUNET_assert (ntohs (msg->size) == sizeof (struct GNUNET_MessageHeader));
- switch (ntohs (msg->type))
- {
- case GNUNET_MESSAGE_TYPE_ARM_SHUTDOWN_ACK:
-#if DEBUG_ARM
- LOG (GNUNET_ERROR_TYPE_DEBUG,
- "Received confirmation for service shutdown.\n");
-#endif
- shutdown_ctx->confirmed = GNUNET_YES;
- GNUNET_CLIENT_receive (shutdown_ctx->sock, &service_shutdown_handler,
- shutdown_ctx, GNUNET_TIME_UNIT_FOREVER_REL);
- break;
- default: /* Fall through */
-#if DEBUG_ARM
- LOG (GNUNET_ERROR_TYPE_DEBUG, "Service shutdown refused!\n");
-#endif
- if (shutdown_ctx->cont != NULL)
- shutdown_ctx->cont (shutdown_ctx->cont_cls, GNUNET_YES);
-
- GNUNET_SCHEDULER_cancel (shutdown_ctx->cancel_task);
- GNUNET_CLIENT_disconnect (shutdown_ctx->sock, GNUNET_NO);
- GNUNET_free (shutdown_ctx);
- break;
- }
- }
+ if (NULL != shutdown_ctx->cont)
+ /* shutdown is now complete, as we waited for the network disconnect... */
+ shutdown_ctx->cont (shutdown_ctx->cont_cls, GNUNET_ARM_PROCESS_DOWN);
+ GNUNET_SCHEDULER_cancel (shutdown_ctx->cancel_task);
+ GNUNET_CLIENT_disconnect (shutdown_ctx->sock);
+ GNUNET_free (shutdown_ctx);
}
+
/**
* Shutting down took too long, cancel receive and return error.
*
* @param cls closure
* @param tc context information (why was this task triggered now)
*/
-void
+static void
service_shutdown_cancel (void *cls,
- const struct GNUNET_SCHEDULER_TaskContext *tc)
+ const struct GNUNET_SCHEDULER_TaskContext *tc)
{
struct ShutdownContext *shutdown_ctx = cls;
-#if DEBUG_ARM
- LOG (GNUNET_ERROR_TYPE_DEBUG, "service_shutdown_cancel called!\n");
-#endif
- shutdown_ctx->cont (shutdown_ctx->cont_cls, GNUNET_SYSERR);
- GNUNET_CLIENT_disconnect (shutdown_ctx->sock, GNUNET_NO);
+ shutdown_ctx->cont (shutdown_ctx->cont_cls, GNUNET_ARM_PROCESS_COMMUNICATION_TIMEOUT);
+ GNUNET_CLIENT_disconnect (shutdown_ctx->sock);
GNUNET_free (shutdown_ctx);
}
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,
- _("Failed to transmit shutdown request to client.\n"));
- shutdown_ctx->cont (shutdown_ctx->cont_cls, GNUNET_SYSERR);
- GNUNET_CLIENT_disconnect (shutdown_ctx->sock, GNUNET_NO);
+ _("Failed to transmit shutdown request to client.\n"));
+ shutdown_ctx->cont (shutdown_ctx->cont_cls, GNUNET_ARM_PROCESS_COMMUNICATION_ERROR);
+ GNUNET_CLIENT_disconnect (shutdown_ctx->sock);
GNUNET_free (shutdown_ctx);
- return 0; /* client disconnected */
+ return 0; /* client disconnected */
}
-
GNUNET_CLIENT_receive (shutdown_ctx->sock, &service_shutdown_handler,
- shutdown_ctx, GNUNET_TIME_UNIT_FOREVER_REL);
+ shutdown_ctx, GNUNET_TIME_UNIT_FOREVER_REL);
shutdown_ctx->cancel_task =
- GNUNET_SCHEDULER_add_delayed (GNUNET_TIME_absolute_get_remaining
- (shutdown_ctx->timeout),
- &service_shutdown_cancel, shutdown_ctx);
+ GNUNET_SCHEDULER_add_delayed (GNUNET_TIME_absolute_get_remaining
+ (shutdown_ctx->timeout),
+ &service_shutdown_cancel, shutdown_ctx);
msg = (struct GNUNET_MessageHeader *) buf;
msg->type = htons (GNUNET_MESSAGE_TYPE_ARM_SHUTDOWN);
msg->size = htons (sizeof (struct GNUNET_MessageHeader));
*/
static void
arm_service_shutdown (struct GNUNET_CLIENT_Connection *sock,
- struct GNUNET_TIME_Relative timeout,
- GNUNET_CLIENT_ShutdownTask cont, void *cont_cls)
+ struct GNUNET_TIME_Relative timeout,
+ GNUNET_CLIENT_ShutdownTask cont, void *cont_cls)
{
struct ShutdownContext *shutdown_ctx;
shutdown_ctx->cont_cls = cont_cls;
shutdown_ctx->sock = sock;
shutdown_ctx->timeout = GNUNET_TIME_relative_to_absolute (timeout);
- 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);
}
*/
struct GNUNET_ARM_Handle *
GNUNET_ARM_connect (const struct GNUNET_CONFIGURATION_Handle *cfg,
- const char *service)
+ const char *service)
{
struct GNUNET_ARM_Handle *ret;
GNUNET_ARM_disconnect (struct GNUNET_ARM_Handle *h)
{
if (h->client != NULL)
- GNUNET_CLIENT_disconnect (h->client, GNUNET_NO);
+ GNUNET_CLIENT_disconnect (h->client);
GNUNET_CONFIGURATION_destroy (h->cfg);
GNUNET_free (h);
}
+
struct ARM_ShutdownContext
{
/**
};
-
/**
* Internal state for a request with ARM.
*/
*/
uint16_t type;
+ /**
+ * Flags for passing std descriptors to ARM (when starting ARM).
+ */
+ enum GNUNET_OS_InheritStdioFlags std_inheritance;
+
};
#include "do_start_process.c"
if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_PREREQ_DONE))
{
-#if DEBUG_ARM
LOG (GNUNET_ERROR_TYPE_DEBUG, "Looks like `%s' is already running.\n",
- "gnunet-service-arm");
-#endif
+ "gnunet-service-arm");
/* arm is running! */
if (pos->callback != NULL)
- pos->callback (pos->cls, GNUNET_YES);
+ pos->callback (pos->cls, GNUNET_ARM_PROCESS_ALREADY_RUNNING);
GNUNET_free (pos);
return;
}
-#if DEBUG_ARM
LOG (GNUNET_ERROR_TYPE_DEBUG,
"Looks like `%s' is not running, will start it.\n",
"gnunet-service-arm");
-#endif
if (GNUNET_OK !=
GNUNET_CONFIGURATION_get_value_string (pos->h->cfg, "arm", "PREFIX",
- &loprefix))
+ &loprefix))
loprefix = GNUNET_strdup ("");
if (GNUNET_OK !=
GNUNET_CONFIGURATION_get_value_string (pos->h->cfg, "arm", "OPTIONS",
- &lopostfix))
+ &lopostfix))
lopostfix = GNUNET_strdup ("");
if (GNUNET_OK !=
GNUNET_CONFIGURATION_get_value_string (pos->h->cfg, "arm", "BINARY",
- &binary))
+ &binary))
{
- LOG (GNUNET_ERROR_TYPE_WARNING,
- _("Configuration failes to specify option `%s' in section `%s'!\n"),
- "BINARY", "arm");
+ GNUNET_log_config_missing (GNUNET_ERROR_TYPE_WARNING,
+ "arm", "BINARY");
if (pos->callback != NULL)
- pos->callback (pos->cls, GNUNET_SYSERR);
+ pos->callback (pos->cls, GNUNET_ARM_PROCESS_UNKNOWN);
GNUNET_free (pos);
GNUNET_free (loprefix);
GNUNET_free (lopostfix);
}
if (GNUNET_OK !=
GNUNET_CONFIGURATION_get_value_filename (pos->h->cfg, "arm", "CONFIG",
- &config))
+ &config))
{
- LOG (GNUNET_ERROR_TYPE_WARNING,
- _("Configuration fails to specify option `%s' in section `%s'!\n"),
- "CONFIG", "arm");
+ GNUNET_log_config_missing (GNUNET_ERROR_TYPE_WARNING,
+ "arm", "CONFIG");
if (pos->callback != NULL)
- pos->callback (pos->cls, GNUNET_SYSERR);
+ pos->callback (pos->cls, GNUNET_ARM_PROCESS_UNKNOWN);
GNUNET_free (binary);
GNUNET_free (pos);
GNUNET_free (loprefix);
GNUNET_free (lopostfix);
return;
}
- if ((GNUNET_YES == GNUNET_CONFIGURATION_have_value (pos->h->cfg, "TESTING", "WEAKRANDOM")) && (GNUNET_YES == GNUNET_CONFIGURATION_get_value_yesno (pos->h->cfg, "TESTING", "WEAKRANDOM")) && (GNUNET_NO == GNUNET_CONFIGURATION_have_value (pos->h->cfg, "TESTING", "HOSTFILE")) /* Means we are ONLY running locally */
- )
+ if ((GNUNET_YES ==
+ GNUNET_CONFIGURATION_have_value (pos->h->cfg, "TESTING", "WEAKRANDOM"))
+ && (GNUNET_YES ==
+ GNUNET_CONFIGURATION_get_value_yesno (pos->h->cfg, "TESTING",
+ "WEAKRANDOM"))
+ && (GNUNET_NO ==
+ GNUNET_CONFIGURATION_have_value (pos->h->cfg, "TESTING",
+ "HOSTFILE")))
{
+ /* Means we are ONLY running locally */
/* we're clearly running a test, don't daemonize */
- proc = do_start_process (NULL, loprefix, binary, "-c", config,
-#if DEBUG_ARM
- "-L", "DEBUG",
-#endif
- /* no daemonization! */
- lopostfix, NULL);
+ proc = do_start_process (GNUNET_NO, pos->std_inheritance,
+ NULL, loprefix, binary, "-c", config,
+ /* no daemonization! */
+ lopostfix, NULL);
}
else
{
- proc = do_start_process (NULL, loprefix, binary, "-c", config,
-#if DEBUG_ARM
- "-L", "DEBUG",
-#endif
- "-d", lopostfix, NULL);
+ proc = do_start_process (GNUNET_NO, pos->std_inheritance,
+ NULL, loprefix, binary, "-c", config,
+ "-d", lopostfix, NULL);
}
GNUNET_free (binary);
GNUNET_free (config);
GNUNET_free (loprefix);
GNUNET_free (lopostfix);
if (proc == NULL)
- {
- if (pos->callback != NULL)
- pos->callback (pos->cls, GNUNET_SYSERR);
- GNUNET_free (pos);
- return;
- }
+ {
+ if (pos->callback != NULL)
+ pos->callback (pos->cls, GNUNET_ARM_PROCESS_FAILURE);
+ GNUNET_free (pos);
+ return;
+ }
if (pos->callback != NULL)
- pos->callback (pos->cls, GNUNET_YES);
+ pos->callback (pos->cls, GNUNET_ARM_PROCESS_STARTING);
GNUNET_free (proc);
GNUNET_free (pos);
}
handle_response (void *cls, const struct GNUNET_MessageHeader *msg)
{
struct RequestContext *sc = cls;
- int ret;
+ const struct GNUNET_ARM_ResultMessage *res;
+ enum GNUNET_ARM_ProcessStatus status;
- if (msg == NULL)
+ if ((msg == NULL) ||
+ (ntohs (msg->size) != sizeof (struct GNUNET_ARM_ResultMessage)))
{
- LOG (GNUNET_ERROR_TYPE_WARNING,
- _
- ("Error receiving response to `%s' request from ARM for service `%s'\n"),
- (sc->type == GNUNET_MESSAGE_TYPE_ARM_START) ? "START" : "STOP",
- (const char *) &sc[1]);
- GNUNET_CLIENT_disconnect (sc->h->client, GNUNET_NO);
+ GNUNET_break (0);
+ GNUNET_CLIENT_disconnect (sc->h->client);
sc->h->client = GNUNET_CLIENT_connect ("arm", sc->h->cfg);
GNUNET_assert (NULL != sc->h->client);
- GNUNET_CLIENT_ignore_shutdown (sc->h->client, GNUNET_YES);
if (sc->callback != NULL)
- sc->callback (sc->cls, GNUNET_SYSERR);
+ sc->callback (sc->cls, GNUNET_ARM_PROCESS_COMMUNICATION_ERROR);
GNUNET_free (sc);
return;
}
-#if DEBUG_ARM
+ res = (const struct GNUNET_ARM_ResultMessage *) msg;
LOG (GNUNET_ERROR_TYPE_DEBUG,
"Received response from ARM for service `%s': %u\n",
(const char *) &sc[1], ntohs (msg->type));
-#endif
- switch (ntohs (msg->type))
- {
- case GNUNET_MESSAGE_TYPE_ARM_IS_UP:
- ret = GNUNET_YES;
- break;
- case GNUNET_MESSAGE_TYPE_ARM_IS_DOWN:
- ret = GNUNET_NO;
- break;
- case GNUNET_MESSAGE_TYPE_ARM_IS_UNKNOWN:
- ret = GNUNET_SYSERR;
- break;
- default:
- GNUNET_break (0);
- ret = GNUNET_SYSERR;
- }
+ status = (enum GNUNET_ARM_ProcessStatus) ntohl (res->status);
if (sc->callback != NULL)
- sc->callback (sc->cls, ret);
+ sc->callback (sc->cls, status);
GNUNET_free (sc);
}
*/
static void
change_service (struct GNUNET_ARM_Handle *h, const char *service_name,
- struct GNUNET_TIME_Relative timeout, GNUNET_ARM_Callback cb,
- void *cb_cls, uint16_t type)
+ struct GNUNET_TIME_Relative timeout, GNUNET_ARM_Callback cb,
+ void *cb_cls, uint16_t type)
{
struct RequestContext *sctx;
size_t slen;
cb (cb_cls, GNUNET_NO);
return;
}
-#if DEBUG_ARM
LOG (GNUNET_ERROR_TYPE_DEBUG,
(type ==
- GNUNET_MESSAGE_TYPE_ARM_START) ?
- _("Requesting start of service `%s'.\n") :
- _("Requesting termination of service `%s'.\n"), service_name);
-#endif
+ GNUNET_MESSAGE_TYPE_ARM_START) ?
+ "Requesting start of service `%s'.\n" :
+ "Requesting termination of service `%s'.\n", service_name);
sctx = GNUNET_malloc (sizeof (struct RequestContext) + slen);
sctx->h = h;
sctx->callback = cb;
memcpy (&msg[1], service_name, slen);
if (GNUNET_OK !=
GNUNET_CLIENT_transmit_and_get_response (sctx->h->client, msg,
- GNUNET_TIME_absolute_get_remaining
- (sctx->timeout), GNUNET_YES,
- &handle_response, sctx))
+ GNUNET_TIME_absolute_get_remaining
+ (sctx->timeout), GNUNET_YES,
+ &handle_response, sctx))
{
- LOG (GNUNET_ERROR_TYPE_WARNING,
- (type ==
- GNUNET_MESSAGE_TYPE_ARM_START) ?
- _("Error while trying to transmit request to start `%s' to ARM\n") :
- _("Error while trying to transmit request to stop `%s' to ARM\n"),
- (const char *) &service_name);
+ GNUNET_break (0);
if (cb != NULL)
cb (cb_cls, GNUNET_SYSERR);
GNUNET_free (sctx);
*
* @param h handle to ARM
* @param service_name name of the service
+ * @param std_inheritance inheritance of std streams
* @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_start_service (struct GNUNET_ARM_Handle *h, const char *service_name,
- struct GNUNET_TIME_Relative timeout,
- GNUNET_ARM_Callback cb, void *cb_cls)
+GNUNET_ARM_start_service (struct GNUNET_ARM_Handle *h,
+ const char *service_name,
+ enum GNUNET_OS_InheritStdioFlags std_inheritance,
+ struct GNUNET_TIME_Relative timeout,
+ GNUNET_ARM_Callback cb, void *cb_cls)
{
struct RequestContext *sctx;
struct GNUNET_CLIENT_Connection *client;
size_t slen;
-#if DEBUG_ARM
LOG (GNUNET_ERROR_TYPE_DEBUG,
- _("Asked to start service `%s' within %llu ms\n"), service_name,
- (unsigned long long) timeout.rel_value);
-#endif
+ "Asked to start service `%s' within %s\n", service_name,
+ GNUNET_STRINGS_relative_time_to_string (timeout, GNUNET_NO));
if (0 == strcasecmp ("arm", service_name))
{
slen = strlen ("arm") + 1;
sctx->callback = cb;
sctx->cls = cb_cls;
sctx->timeout = GNUNET_TIME_relative_to_absolute (timeout);
+ sctx->std_inheritance = std_inheritance;
memcpy (&sctx[1], service_name, slen);
GNUNET_CLIENT_service_test ("arm", h->cfg, timeout, &arm_service_report,
- sctx);
+ sctx);
return;
}
- if (h->client == NULL)
+ if (NULL == h->client)
{
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_SYSERR);
+ "arm_api, GNUNET_CLIENT_connect returned NULL\n");
+ cb (cb_cls, GNUNET_ARM_PROCESS_COMMUNICATION_ERROR);
return;
}
LOG (GNUNET_ERROR_TYPE_DEBUG,
- "arm_api, GNUNET_CLIENT_connect returned non-NULL\n");
- GNUNET_CLIENT_ignore_shutdown (client, GNUNET_YES);
+ "arm_api, GNUNET_CLIENT_connect returned non-NULL\n");
h->client = client;
}
LOG (GNUNET_ERROR_TYPE_DEBUG, "arm_api, h->client non-NULL\n");
change_service (h, service_name, timeout, cb, cb_cls,
- GNUNET_MESSAGE_TYPE_ARM_START);
+ GNUNET_MESSAGE_TYPE_ARM_START);
}
+
/**
* Callback from the arm stop service call, indicates that the arm service
* is well and truly dead, won't die, or an error occurred.
*
* @param cls closure for the callback
- * @param reason reason for callback, GNUNET_NO if arm is shutdown
- * GNUNET_YES if arm remains running, and GNUNET_SYSERR on error
+ * @param reason reason for callback
*/
-void
-arm_shutdown_callback (void *cls, int reason)
+static void
+arm_shutdown_callback (void *cls, enum GNUNET_ARM_ProcessStatus reason)
{
struct ARM_ShutdownContext *arm_shutdown_ctx = cls;
if (arm_shutdown_ctx->cb != NULL)
arm_shutdown_ctx->cb (arm_shutdown_ctx->cb_cls, reason);
-
GNUNET_free (arm_shutdown_ctx);
}
* @param cb_cls closure for callback
*/
void
-GNUNET_ARM_stop_service (struct GNUNET_ARM_Handle *h, const char *service_name,
- struct GNUNET_TIME_Relative timeout,
- GNUNET_ARM_Callback cb, void *cb_cls)
+GNUNET_ARM_stop_service (struct GNUNET_ARM_Handle *h,
+ const char *service_name,
+ struct GNUNET_TIME_Relative timeout,
+ GNUNET_ARM_Callback cb, void *cb_cls)
{
struct ARM_ShutdownContext *arm_shutdown_ctx;
struct GNUNET_CLIENT_Connection *client;
- LOG (GNUNET_ERROR_TYPE_INFO, _("Stopping service `%s' within %llu ms\n"),
- service_name, (unsigned long long) timeout.rel_value);
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "Stopping service `%s' within %s\n",
+ service_name,
+ GNUNET_STRINGS_relative_time_to_string (timeout, GNUNET_NO));
if (h->client == NULL)
{
client = GNUNET_CLIENT_connect ("arm", h->cfg);
cb (cb_cls, GNUNET_SYSERR);
return;
}
- GNUNET_CLIENT_ignore_shutdown (client, GNUNET_YES);
h->client = client;
}
if (0 == strcasecmp ("arm", service_name))
arm_shutdown_ctx->cb = cb;
arm_shutdown_ctx->cb_cls = cb_cls;
arm_service_shutdown (h->client, timeout, &arm_shutdown_callback,
- arm_shutdown_ctx);
+ arm_shutdown_ctx);
h->client = NULL;
return;
}
change_service (h, service_name, timeout, cb, cb_cls,
- GNUNET_MESSAGE_TYPE_ARM_STOP);
+ GNUNET_MESSAGE_TYPE_ARM_STOP);
}
+/**
+ * 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)
+ {
+ GNUNET_break (0);
+ GNUNET_CLIENT_disconnect (sc->h->client);
+ 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)
+ {
+ GNUNET_break (0);
+ cb (cb_cls, GNUNET_ARM_PROCESS_COMMUNICATION_ERROR, 0, NULL);
+ return;
+ }
+ 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: %s\n",
+ GNUNET_STRINGS_relative_time_to_string (timeout, GNUNET_YES));
+
+ 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))
+ {
+ GNUNET_break (0);
+ if (cb != NULL)
+ cb (cb_cls, GNUNET_SYSERR, 0, NULL);
+ GNUNET_free (sctx);
+ return;
+ }
+}
+
/* end of arm_api.c */
projects / oweals / gnunet.git / blobdiff