/*
This file is part of GNUnet
- (C) 2008--2012 Christian Grothoff (and other contributing authors)
+ (C) 2008--2013 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
* @author Christian Grothoff
*/
#include "platform.h"
+#include "gnunet_util_lib.h"
#include "gnunet_testbed_service.h"
#include "gnunet_core_service.h"
-#include "gnunet_constants.h"
#include "gnunet_transport_service.h"
-#include "gnunet_hello_lib.h"
-#include "gnunet_container_lib.h"
+#include "testbed_api.h"
+#include "testbed_api_hosts.h"
+#include "testbed_helper.h"
+#include "testbed_api_operations.h"
+#include <zlib.h>
+#include <regex.h>
/**
- * Opaque handle to a host running experiments managed by the testing framework.
- * The master process must be able to SSH to this host without password (via
- * ssh-agent).
+ * Generic logging shorthand
*/
-struct GNUNET_TESTBED_Host
+#define LOG(kind, ...) \
+ GNUNET_log_from (kind, "testbed-api-hosts", __VA_ARGS__);
+
+/**
+ * Debug logging shorthand
+ */
+#define LOG_DEBUG(...) \
+ LOG (GNUNET_ERROR_TYPE_DEBUG, __VA_ARGS__);
+
+/**
+ * Prints API violation message
+ */
+#define API_VIOLATION(cond,errstr) \
+ do { \
+ if (cond) \
+ break; \
+ LOG (GNUNET_ERROR_TYPE_ERROR, "API violation detected: %s\n", errstr); \
+ GNUNET_assert (0); \
+ } while (0)
+
+/**
+ * Log an error message at log-level 'level' that indicates a failure of the
+ * command 'cmd' with the message given by gai_strerror(rc).
+ */
+#define LOG_GAI(level, cmd, rc) do { LOG(level, _("`%s' failed at %s:%d with error: %s\n"), cmd, __FILE__, __LINE__, gai_strerror(rc)); } while(0)
+
+/**
+ * Number of extra elements we create space for when we grow host list
+ */
+#define HOST_LIST_GROW_STEP 10
+
+
+/**
+ * A list entry for registered controllers list
+ */
+struct RegisteredController
{
+ /**
+ * The controller at which this host is registered
+ */
+ const struct GNUNET_TESTBED_Controller *controller;
/**
- * The next pointer for DLL
+ * The next ptr for DLL
*/
- struct GNUNET_TESTBED_Host *next;
+ struct RegisteredController *next;
/**
- * The prev pointer for DLL
+ * The prev ptr for DLL
*/
- struct GNUNET_TESTBED_Host *prev;
+ struct RegisteredController *prev;
+};
+
+
+/**
+ * Opaque handle to a host running experiments managed by the testing framework.
+ * The master process must be able to SSH to this host without password (via
+ * ssh-agent).
+ */
+struct GNUNET_TESTBED_Host
+{
/**
* The hostname of the host; NULL for localhost
*/
const char *username;
+ /**
+ * the configuration to use as a template while starting a controller on this
+ * host. Operation queue size specific to a host are also read from this
+ * configuration handle. After starting the controller, it points to the actual
+ * configuration with which the controller is running
+ */
+ struct GNUNET_CONFIGURATION_Handle *cfg;
+
+ /**
+ * The head for the list of controllers where this host is registered
+ */
+ struct RegisteredController *rc_head;
+
+ /**
+ * The tail for the list of controllers where this host is registered
+ */
+ struct RegisteredController *rc_tail;
+
+ /**
+ * Operation queue for simultaneous overlay connect operations target at this
+ * host
+ */
+ struct OperationQueue *opq_parallel_overlay_connect_operations;
+
+ /**
+ * Is a controller started on this host? FIXME: Is this needed?
+ */
+ int controller_started;
+
+ /**
+ * Is this host locked by GNUNET_TESTBED_controller_start()?
+ */
+ int locked;
+
/**
* Global ID we use to refer to a host on the network
*/
- uint32_t unique_id;
+ uint32_t id;
/**
* The port which is to be used for SSH
*/
uint16_t port;
+
};
/**
- * Head element in the list of available hosts
+ * Array of available hosts
*/
-static struct GNUNET_TESTBED_Host *host_list_head;
+static struct GNUNET_TESTBED_Host **host_list;
/**
- * Tail element in the list of available hosts
+ * The size of the available hosts list
*/
-static struct GNUNET_TESTBED_Host *host_list_tail;
+static unsigned int host_list_size;
/**
* Lookup a host by ID.
- *
+ *
* @param id global host ID assigned to the host; 0 is
* reserved to always mean 'localhost'
* @return handle to the host, NULL if host not found
struct GNUNET_TESTBED_Host *
GNUNET_TESTBED_host_lookup_by_id_ (uint32_t id)
{
- struct GNUNET_TESTBED_Host *host;
-
- for (host = host_list_head; NULL != host; host=host->next)
- if (id == host->unique_id)
- return host;
- return NULL;
+ if (host_list_size <= id)
+ return NULL;
+ return host_list[id];
}
* Create a host by ID; given this host handle, we could not
* run peers at the host, but we can talk about the host
* internally.
- *
+ *
* @param id global host ID assigned to the host; 0 is
* reserved to always mean 'localhost'
+ * @param cfg the configuration to use as a template while starting a controller
+ * on this host. Operation queue sizes specific to a host are also
+ * read from this configuration handle
* @return handle to the host, NULL on error
*/
struct GNUNET_TESTBED_Host *
-GNUNET_TESTBED_host_create_by_id_ (uint32_t id)
+GNUNET_TESTBED_host_create_by_id_ (uint32_t id,
+ const struct GNUNET_CONFIGURATION_Handle
+ *cfg)
{
- GNUNET_break (0);
- return NULL;
+ return GNUNET_TESTBED_host_create_with_id (id, NULL, NULL, cfg, 0);
}
/**
- * Obtain a host's unique global ID.
- *
+ * Obtain the host's unique global ID.
+ *
* @param host handle to the host, NULL means 'localhost'
* @return id global host ID assigned to the host (0 is
* 'localhost', but then obviously not globally unique)
*/
uint32_t
-GNUNET_TESTBED_host_get_id_ (const struct GNUNET_TESTBED_Host *host)
+GNUNET_TESTBED_host_get_id_ (const struct GNUNET_TESTBED_Host * host)
+{
+ return host->id;
+}
+
+
+/**
+ * Obtain the host's hostname.
+ *
+ * @param host handle to the host, NULL means 'localhost'
+ * @return hostname of the host
+ */
+const char *
+GNUNET_TESTBED_host_get_hostname (const struct GNUNET_TESTBED_Host *host)
+{
+ return host->hostname;
+}
+
+
+/**
+ * Obtain the host's username
+ *
+ * @param host handle to the host, NULL means 'localhost'
+ * @return username to login to the host
+ */
+const char *
+GNUNET_TESTBED_host_get_username_ (const struct GNUNET_TESTBED_Host *host)
+{
+ return host->username;
+}
+
+
+/**
+ * Obtain the host's ssh port
+ *
+ * @param host handle to the host, NULL means 'localhost'
+ * @return username to login to the host
+ */
+uint16_t
+GNUNET_TESTBED_host_get_ssh_port_ (const struct GNUNET_TESTBED_Host * host)
+{
+ return host->port;
+}
+
+
+/**
+ * Check whether a controller is already started on the given host
+ *
+ * @param host the handle to the host
+ * @return GNUNET_YES if the controller is already started; GNUNET_NO if not
+ */
+int
+GNUNET_TESTBED_host_controller_started (const struct GNUNET_TESTBED_Host *host)
{
- return host->unique_id;
+ return host->controller_started;
+}
+
+
+/**
+ * Obtain the host's configuration template
+ *
+ * @param host handle to the host
+ * @return the host's configuration template
+ */
+const struct GNUNET_CONFIGURATION_Handle *
+GNUNET_TESTBED_host_get_cfg_ (const struct GNUNET_TESTBED_Host *host)
+{
+ return host->cfg;
+}
+
+
+/**
+ * Function to replace host's configuration
+ *
+ * @param host the host handle
+ * @param new_cfg the new configuration to replace the old one
+ */
+void
+GNUNET_TESTBED_host_replace_cfg_ (struct GNUNET_TESTBED_Host *host,
+ const struct GNUNET_CONFIGURATION_Handle *new_cfg)
+{
+ GNUNET_CONFIGURATION_destroy (host->cfg);
+ host->cfg = GNUNET_CONFIGURATION_dup (new_cfg);
}
/**
* Create a host to run peers and controllers on.
- *
+ *
* @param id global host ID assigned to the host; 0 is
* reserved to always mean 'localhost'
* @param hostname name of the host, use "NULL" for localhost
* @param username username to use for the login; may be NULL
+ * @param cfg the configuration to use as a template while starting a controller
+ * on this host. Operation queue sizes specific to a host are also
+ * read from this configuration handle
* @param port port number to use for ssh; use 0 to let ssh decide
* @return handle to the host, NULL on error
*/
struct GNUNET_TESTBED_Host *
-GNUNET_TESTBED_host_create_with_id_ (uint32_t id,
- const char *hostname,
- const char *username,
- uint16_t port)
+GNUNET_TESTBED_host_create_with_id (uint32_t id, const char *hostname,
+ const char *username,
+ const struct GNUNET_CONFIGURATION_Handle
+ *cfg,
+ uint16_t port)
{
struct GNUNET_TESTBED_Host *host;
+ unsigned int new_size;
+ if ((id < host_list_size) && (NULL != host_list[id]))
+ {
+ LOG (GNUNET_ERROR_TYPE_WARNING, "Host with id: %u already created\n", id);
+ return NULL;
+ }
host = GNUNET_malloc (sizeof (struct GNUNET_TESTBED_Host));
- host->hostname = hostname;
- host->username = username;
- host->unique_id = id;
+ host->hostname = (NULL != hostname) ? GNUNET_strdup (hostname) : NULL;
+ host->username = (NULL != username) ? GNUNET_strdup (username) : NULL;
+ host->id = id;
host->port = (0 == port) ? 22 : port;
- GNUNET_CONTAINER_DLL_insert_tail (host_list_head, host_list_tail, host);
+ host->cfg = GNUNET_CONFIGURATION_dup (cfg);
+ host->opq_parallel_overlay_connect_operations =
+ GNUNET_TESTBED_operation_queue_create_ (OPERATION_QUEUE_TYPE_ADAPTIVE,
+ UINT_MAX);
+ new_size = host_list_size;
+ while (id >= new_size)
+ new_size += HOST_LIST_GROW_STEP;
+ if (new_size != host_list_size)
+ GNUNET_array_grow (host_list, host_list_size, new_size);
+ GNUNET_assert (id < host_list_size);
+ LOG (GNUNET_ERROR_TYPE_DEBUG, "Adding host with id: %u\n", host->id);
+ host_list[id] = host;
return host;
}
/**
* Create a host to run peers and controllers on.
- *
+ *
* @param hostname name of the host, use "NULL" for localhost
* @param username username to use for the login; may be NULL
+ * @param cfg the configuration to use as a template while starting a controller
+ * on this host. Operation queue sizes specific to a host are also
+ * read from this configuration handle
* @param port port number to use for ssh; use 0 to let ssh decide
* @return handle to the host, NULL on error
*/
struct GNUNET_TESTBED_Host *
-GNUNET_TESTBED_host_create (const char *hostname,
- const char *username,
- uint16_t port)
+GNUNET_TESTBED_host_create (const char *hostname, const char *username,
+ const struct GNUNET_CONFIGURATION_Handle *cfg,
+ uint16_t port)
{
static uint32_t uid_generator;
if (NULL == hostname)
- return GNUNET_TESTBED_host_create_with_id_ (0, hostname, username, port);
- return GNUNET_TESTBED_host_create_with_id_ (++uid_generator,
- hostname, username,
- port);
+ return GNUNET_TESTBED_host_create_with_id (0, hostname, username,
+ cfg, port);
+ return GNUNET_TESTBED_host_create_with_id (++uid_generator, hostname,
+ username, cfg, port);
}
* Load a set of hosts from a configuration file.
*
* @param filename file with the host specification
- * @param hosts set to the hosts found in the file
+ * @param cfg the configuration to use as a template while starting a controller
+ * on any of the loaded hosts. Operation queue sizes specific to a host
+ * are also read from this configuration handle
+ * @param hosts set to the hosts found in the file; caller must free this if
+ * number of hosts returned is greater than 0
* @return number of hosts returned in 'hosts', 0 on error
*/
unsigned int
GNUNET_TESTBED_hosts_load_from_file (const char *filename,
- struct GNUNET_TESTBED_Host **hosts)
+ const struct GNUNET_CONFIGURATION_Handle
+ *cfg,
+ struct GNUNET_TESTBED_Host ***hosts)
{
- GNUNET_break (0);
- return 0;
+ //struct GNUNET_TESTBED_Host **host_array;
+ struct GNUNET_TESTBED_Host *starting_host;
+ char *data;
+ char *buf;
+ char *username;
+ char *hostname;
+ regex_t rex;
+ regmatch_t pmatch[6];
+ uint64_t fs;
+ short int port;
+ unsigned int offset;
+ unsigned int count;
+
+
+ GNUNET_assert (NULL != filename);
+ if (GNUNET_YES != GNUNET_DISK_file_test (filename))
+ {
+ LOG (GNUNET_ERROR_TYPE_WARNING, _("Hosts file %s not found\n"), filename);
+ return 0;
+ }
+ if (GNUNET_OK !=
+ GNUNET_DISK_file_size (filename, &fs, GNUNET_YES, GNUNET_YES))
+ fs = 0;
+ if (0 == fs)
+ {
+ LOG (GNUNET_ERROR_TYPE_WARNING, _("Hosts file %s has no data\n"), filename);
+ return 0;
+ }
+ data = GNUNET_malloc (fs);
+ if (fs != GNUNET_DISK_fn_read (filename, data, fs))
+ {
+ GNUNET_free (data);
+ LOG (GNUNET_ERROR_TYPE_WARNING, _("Hosts file %s cannot be read\n"),
+ filename);
+ return 0;
+ }
+ buf = data;
+ offset = 0;
+ starting_host = NULL;
+ count = 0;
+ /* refer RFC 952 and RFC 1123 for valid hostnames */
+ GNUNET_assert (0 == regcomp (&rex,
+ "^(([[:alnum:]]+)@)?" /* username */
+ "([[:alnum:]]+[-[:alnum:]_\\.]+)" /* hostname */
+ "(:([[:digit:]]{1,5}))?", /* port */
+ REG_EXTENDED | REG_ICASE));
+ while (offset < (fs - 1))
+ {
+ offset++;
+ if (((data[offset] == '\n')) && (buf != &data[offset]))
+ {
+ unsigned int size;
+
+ data[offset] = '\0';
+ username = NULL;
+ hostname = NULL;
+ port = 0;
+ if ((REG_NOMATCH == regexec (&rex, buf, 6, pmatch, 0))
+ || (-1 == pmatch[3].rm_so))
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
+ "Error reading line `%s' in hostfile\n", buf);
+ buf = &data[offset + 1];
+ continue;
+ }
+ if (-1 != pmatch[2].rm_so)
+ {
+ size = pmatch[2].rm_eo - pmatch[2].rm_so;
+ username = GNUNET_malloc (size + 1);
+ username[size] = '\0';
+ GNUNET_assert (NULL != strncpy (username, buf + pmatch[2].rm_so, size));
+ }
+ if (-1 != pmatch[5].rm_so)
+ {
+ (void) SSCANF (buf + pmatch[5].rm_so, "%5hd", &port);
+ }
+ size = pmatch[3].rm_eo - pmatch[3].rm_so;
+ hostname = GNUNET_malloc (size + 1);
+ hostname[size] = '\0';
+ GNUNET_assert (NULL != strncpy (hostname, buf + pmatch[3].rm_so, size));
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "Successfully read host %s, port %d and user %s from file\n",
+ (NULL == hostname) ? "NULL" : hostname,
+ port,
+ (NULL == username) ? "NULL" : username);
+ /* We store hosts in a static list; hence we only require the starting
+ * host pointer in that list to access the newly created list of hosts */
+ if (NULL == starting_host)
+ starting_host = GNUNET_TESTBED_host_create (hostname, username, cfg,
+ port);
+ else
+ (void) GNUNET_TESTBED_host_create (hostname, username, cfg, port);
+ count++;
+ GNUNET_free_non_null (username);
+ GNUNET_free (hostname);
+ buf = &data[offset + 1];
+ }
+ else if ((data[offset] == '\n') || (data[offset] == '\0'))
+ buf = &data[offset + 1];
+ }
+ regfree (&rex);
+ GNUNET_free (data);
+ if (NULL == starting_host)
+ return 0;
+ *hosts = GNUNET_malloc (sizeof (struct GNUNET_TESTBED_Host *) * count);
+ memcpy (*hosts, &host_list[GNUNET_TESTBED_host_get_id_ (starting_host)],
+ sizeof (struct GNUNET_TESTBED_Host *) * count);
+ return count;
+}
+
+
+/**
+ * Resolves a hostname using getaddrinfo
+ *
+ * @param host the hostname
+ * @return the string representing the IPv4 address of the given host; NULL upon error
+ */
+const char *
+simple_resolve (const char *host)
+{
+ struct addrinfo *res;
+ const struct sockaddr_in *in_addr;
+ char *hostip;
+ struct addrinfo hint;
+ unsigned int rc;
+
+ hint.ai_family = AF_INET; /* IPv4 */
+ hint.ai_socktype = 0;
+ hint.ai_protocol = 0;
+ hint.ai_addrlen = 0;
+ hint.ai_addr = NULL;
+ hint.ai_canonname = NULL;
+ hint.ai_next = NULL;
+ hint.ai_flags = AI_NUMERICSERV;
+ res = NULL;
+ LOG_DEBUG ("Resolving [%s]\n", host);
+ if (0 != (rc = getaddrinfo (host, "22", &hint, &res)))
+ {
+ LOG_GAI (GNUNET_ERROR_TYPE_ERROR, "getaddrinfo", rc);
+ return NULL;
+ }
+ GNUNET_assert (NULL != res);
+ GNUNET_assert (NULL != res->ai_addr);
+ GNUNET_assert (sizeof (struct sockaddr_in) == res->ai_addrlen);
+ in_addr = (const struct sockaddr_in *) res->ai_addr;
+ hostip = inet_ntoa (in_addr->sin_addr);
+ GNUNET_assert (NULL != hostip);
+ freeaddrinfo (res);
+ LOG_DEBUG ("Resolved [%s] to [%s]\n", host, hostip);
+ return hostip;
+}
+
+
+/**
+ * Loads the set of host allocated by the LoadLeveler Job Scheduler. This
+ * function is only available when compiled with support for LoadLeveler and is
+ * used for running on the SuperMUC
+ *
+ * @param cfg the configuration to use as a template while starting a controller
+ * on any of the loaded hosts. Operation queue sizes specific to a host
+ * are also read from this configuration handle
+ * @param hosts set to the hosts found in the file; caller must free this if
+ * number of hosts returned is greater than 0
+ * @return number of hosts returned in 'hosts', 0 on error
+ */
+unsigned int
+GNUNET_TESTBED_hosts_load_from_loadleveler (const struct
+ GNUNET_CONFIGURATION_Handle *cfg,
+ struct GNUNET_TESTBED_Host ***hosts)
+{
+#if !ENABLE_SUPERMUC
+ LOG (GNUNET_ERROR_TYPE_ERROR,
+ _("The function %s is only available when compiled with (--with-ll)\n"),
+ __func__);
+ GNUNET_assert (0);
+#else
+ const char *hostfile;
+
+ if (NULL == (hostfile = getenv ("MP_SAVEHOSTFILE")))
+ {
+ GNUNET_break (0);
+ return 0;
+ }
+ return GNUNET_TESTBED_hosts_load_from_file (hostfile, cfg, hosts);
+#endif
}
*/
void
GNUNET_TESTBED_host_destroy (struct GNUNET_TESTBED_Host *host)
-{
- GNUNET_CONTAINER_DLL_remove (host_list_head, host_list_tail, host);
- GNUNET_free (host);
+{
+ struct RegisteredController *rc;
+ uint32_t id;
+
+ GNUNET_assert (host->id < host_list_size);
+ GNUNET_assert (host_list[host->id] == host);
+ host_list[host->id] = NULL;
+ /* clear registered controllers list */
+ for (rc = host->rc_head; NULL != rc; rc = host->rc_head)
+ {
+ GNUNET_CONTAINER_DLL_remove (host->rc_head, host->rc_tail, rc);
+ GNUNET_free (rc);
+ }
+ GNUNET_free_non_null ((char *) host->username);
+ GNUNET_free_non_null ((char *) host->hostname);
+ GNUNET_TESTBED_operation_queue_destroy_
+ (host->opq_parallel_overlay_connect_operations);
+ GNUNET_CONFIGURATION_destroy (host->cfg);
+ GNUNET_free (host);
+ while (host_list_size >= HOST_LIST_GROW_STEP)
+ {
+ for (id = host_list_size - 1; id > host_list_size - HOST_LIST_GROW_STEP;
+ id--)
+ if (NULL != host_list[id])
+ break;
+ if (id != host_list_size - HOST_LIST_GROW_STEP)
+ break;
+ if (NULL != host_list[id])
+ break;
+ host_list_size -= HOST_LIST_GROW_STEP;
+ }
+ host_list =
+ GNUNET_realloc (host_list,
+ sizeof (struct GNUNET_TESTBED_Host *) * host_list_size);
}
/**
- * Run a given helper process at the given host. Communication
- * with the helper will be via GNUnet messages on stdin/stdout.
- * Runs the process via 'ssh' at the specified host, or locally.
- * Essentially an SSH-wrapper around the 'gnunet_helper_lib.h' API.
- *
- * @param host host to use, use "NULL" for localhost
- * @param binary_argv binary name and command-line arguments to give to the binary
- * @param cb function to call for messages received from the binary
- * @param cb_cls closure for cb
- * @return handle to terminate the command, NULL on error
+ * Marks a host as registered with a controller
+ *
+ * @param host the host to mark
+ * @param controller the controller at which this host is registered
*/
-struct GNUNET_HELPER_Handle *
-GNUNET_TESTBED_host_run_ (struct GNUNET_TESTBED_Host *host,
- char *const binary_argv[],
- GNUNET_SERVER_MessageTokenizerCallback cb, void *cb_cls)
+void
+GNUNET_TESTBED_mark_host_registered_at_ (struct GNUNET_TESTBED_Host *host,
+ const struct GNUNET_TESTBED_Controller
+ *const controller)
{
- /* FIXME: decide on the SSH command line, prepend it and
- run GNUNET_HELPER_start with the modified binary_name and binary_argv! */
- struct GNUNET_HELPER_Handle *h;
- char *const local_args[] = {NULL};
- char *port;
- char *dst;
- char *remote_args[] = {"ssh", "-p", port, "-q", dst,
- "gnunet-service-testbed", NULL};
+ struct RegisteredController *rc;
+
+ for (rc = host->rc_head; NULL != rc; rc = rc->next)
+ {
+ if (controller == rc->controller) /* already registered at controller */
+ {
+ GNUNET_break (0);
+ return;
+ }
+ }
+ rc = GNUNET_malloc (sizeof (struct RegisteredController));
+ rc->controller = controller;
+ GNUNET_CONTAINER_DLL_insert_tail (host->rc_head, host->rc_tail, rc);
+}
+
+
+/**
+ * Unmarks a host registered at a controller
+ *
+ * @param host the host to unmark
+ * @param controller the controller at which this host has to be unmarked
+ */
+void
+GNUNET_TESTBED_deregister_host_at_ (struct GNUNET_TESTBED_Host *host,
+ const struct GNUNET_TESTBED_Controller
+ *const controller)
+{
+ struct RegisteredController *rc;
+
+ for (rc = host->rc_head; NULL != rc; rc=rc->next)
+ if (controller == rc->controller)
+ break;
+ if (NULL == rc)
+ {
+ GNUNET_break (0);
+ return;
+ }
+ GNUNET_CONTAINER_DLL_remove (host->rc_head, host->rc_tail, rc);
+ GNUNET_free (rc);
+}
+
+
+/**
+ * Checks whether a host has been registered
+ *
+ * @param host the host to check
+ * @param controller the controller at which host's registration is checked
+ * @return GNUNET_YES if registered; GNUNET_NO if not
+ */
+int
+GNUNET_TESTBED_is_host_registered_ (const struct GNUNET_TESTBED_Host *host,
+ const struct GNUNET_TESTBED_Controller
+ *const controller)
+{
+ struct RegisteredController *rc;
+
+ for (rc = host->rc_head; NULL != rc; rc = rc->next)
+ {
+ if (controller == rc->controller) /* already registered at controller */
+ {
+ return GNUNET_YES;
+ }
+ }
+ return GNUNET_NO;
+}
+
+
+/**
+ * Handle for controller process
+ */
+struct GNUNET_TESTBED_ControllerProc
+{
+ /**
+ * The process handle
+ */
+ struct GNUNET_HELPER_Handle *helper;
+
+ /**
+ * The arguments used to start the helper
+ */
+ char **helper_argv;
+
+ /**
+ * The host where the helper is run
+ */
+ struct GNUNET_TESTBED_Host *host;
+
+ /**
+ * The controller error callback
+ */
+ GNUNET_TESTBED_ControllerStatusCallback cb;
+
+ /**
+ * The closure for the above callback
+ */
+ void *cls;
+
+ /**
+ * The send handle for the helper
+ */
+ struct GNUNET_HELPER_SendHandle *shandle;
+
+ /**
+ * The message corresponding to send handle
+ */
+ struct GNUNET_MessageHeader *msg;
+
+};
+
+
+/**
+ * Function to copy NULL terminated list of arguments
+ *
+ * @param argv the NULL terminated list of arguments. Cannot be NULL.
+ * @return the copied NULL terminated arguments
+ */
+static char **
+copy_argv (const char *const *argv)
+{
+ char **argv_dup;
+ unsigned int argp;
+
+ GNUNET_assert (NULL != argv);
+ for (argp = 0; NULL != argv[argp]; argp++) ;
+ argv_dup = GNUNET_malloc (sizeof (char *) * (argp + 1));
+ for (argp = 0; NULL != argv[argp]; argp++)
+ argv_dup[argp] = strdup (argv[argp]);
+ return argv_dup;
+}
+
+
+/**
+ * Function to join NULL terminated list of arguments
+ *
+ * @param argv1 the NULL terminated list of arguments. Cannot be NULL.
+ * @param argv2 the NULL terminated list of arguments. Cannot be NULL.
+ * @return the joined NULL terminated arguments
+ */
+static char **
+join_argv (const char *const *argv1, const char *const *argv2)
+{
+ char **argvj;
+ char *argv;
+ unsigned int carg;
+ unsigned int cnt;
+
+ carg = 0;
+ argvj = NULL;
+ for (cnt = 0; NULL != argv1[cnt]; cnt++)
+ {
+ argv = GNUNET_strdup (argv1[cnt]);
+ GNUNET_array_append (argvj, carg, argv);
+ }
+ for (cnt = 0; NULL != argv2[cnt]; cnt++)
+ {
+ argv = GNUNET_strdup (argv2[cnt]);
+ GNUNET_array_append (argvj, carg, argv);
+ }
+ GNUNET_array_append (argvj, carg, NULL);
+ return argvj;
+}
+
+
+/**
+ * Frees the given NULL terminated arguments
+ *
+ * @param argv the NULL terminated list of arguments
+ */
+static void
+free_argv (char **argv)
+{
+ unsigned int argp;
+
+ for (argp = 0; NULL != argv[argp]; argp++)
+ GNUNET_free (argv[argp]);
+ GNUNET_free (argv);
+}
+
+
+/**
+ * Generates arguments for opening a remote shell. Builds up the arguments
+ * from the environment variable GNUNET_TESTBED_RSH_CMD. The variable
+ * should not mention `-p' (port) option and destination address as these will
+ * be set locally in the function from its parameteres. If the environmental
+ * variable is not found then it defaults to `ssh -o BatchMode=yes -o
+ * NoHostAuthenticationForLocalhost=yes'
+ *
+ * @param port the destination port number
+ * @param hostname the hostname of the target host
+ * @param username the username to use while connecting to target host
+ * @return NULL terminated list of arguments
+ */
+static char **
+gen_rsh_args (const char *port, const char *hostname, const char *username)
+{
+ static const char *default_ssh_args[] = {
+ "ssh",
+ "-o",
+ "BatchMode=yes",
+ "-o",
+ "NoHostAuthenticationForLocalhost=yes",
+ "%h",
+ NULL
+ };
+ char **ssh_args;
+ char *ssh_cmd;
+ char *ssh_cmd_cp;
+ char *arg;
+ const char *new_arg;
+ unsigned int size;
+ unsigned int cnt;
+
+ ssh_args = NULL;
+ if (NULL != (ssh_cmd = getenv ("GNUNET_TESTBED_RSH_CMD")))
+ {
+ ssh_cmd = GNUNET_strdup (ssh_cmd);
+ ssh_cmd_cp = ssh_cmd;
+ for (size = 0; NULL != (arg = strtok (ssh_cmd, " ")); ssh_cmd = NULL)
+ GNUNET_array_append (ssh_args, size, GNUNET_strdup (arg));
+ GNUNET_free (ssh_cmd_cp);
+ }
+ else
+ {
+ ssh_args = copy_argv (default_ssh_args);
+ size = (sizeof (default_ssh_args)) / (sizeof (const char *));
+ GNUNET_array_grow (ssh_args, size, size - 1);
+ }
+ for (cnt = 0; cnt < size; cnt++)
+ {
+ arg = ssh_args[cnt];
+ if ('%' != arg[0])
+ continue;
+ switch (arg[1])
+ {
+ case 'p':
+ new_arg = port;
+ break;
+
+ case 'u':
+ new_arg = username;
+ break;
+
+ case 'h':
+ new_arg = hostname;
+ break;
+
+ default:
+ continue;
+ }
+ if (NULL == new_arg)
+ continue;
+ GNUNET_free (arg);
+ ssh_args[cnt] = GNUNET_strdup (new_arg);
+ }
+ GNUNET_array_append (ssh_args, size, NULL);
+ return ssh_args;
+}
+
+
+/**
+ * Generates the arguments needed for executing the given binary in a remote
+ * shell. Builds the arguments from the environmental variable
+ * GNUNET_TETSBED_RSH_CMD_SUFFIX. If the environmental variable is not found,
+ * only the given binary name will be present in the returned arguments
+ *
+ * @param append_args the arguments to append after generating the suffix
+ * arguments. Can be NULL; if not must be NULL terminated 'char *' array
+ * @return NULL-terminated args
+ */
+static char **
+gen_rsh_suffix_args (const char * const *append_args)
+{
+ char **rshell_args;
+ char *rshell_cmd;
+ char *rshell_cmd_cp;
+ char *arg;
+ unsigned int cnt;
+ unsigned int append_cnt;
+
+ rshell_args = NULL;
+ cnt = 0;
+ if (NULL != (rshell_cmd = getenv ("GNUNET_TESTBED_RSH_CMD_SUFFIX")))
+ {
+ rshell_cmd = GNUNET_strdup (rshell_cmd);
+ rshell_cmd_cp = rshell_cmd;
+ for (; NULL != (arg = strtok (rshell_cmd, " ")); rshell_cmd = NULL)
+ GNUNET_array_append (rshell_args, cnt, GNUNET_strdup (arg));
+ GNUNET_free (rshell_cmd_cp);
+ }
+ if (NULL != append_args)
+ {
+ for (append_cnt = 0; NULL != append_args[append_cnt]; append_cnt++)
+ GNUNET_array_append (rshell_args, cnt, GNUNET_strdup (append_args[append_cnt]));
+ }
+ GNUNET_array_append (rshell_args, cnt, NULL);
+ return rshell_args;
+}
+
+
+/**
+ * Functions with this signature are called whenever a
+ * complete message is received by the tokenizer.
+ *
+ * Do not call GNUNET_SERVER_mst_destroy in callback
+ *
+ * @param cls closure
+ * @param client identification of the client
+ * @param message the actual message
+ *
+ * @return GNUNET_OK on success, GNUNET_SYSERR to stop further processing
+ */
+static int
+helper_mst (void *cls, void *client, const struct GNUNET_MessageHeader *message)
+{
+ struct GNUNET_TESTBED_ControllerProc *cp = cls;
+ const struct GNUNET_TESTBED_HelperReply *msg;
+ const char *hostname;
+ char *config;
+ uLongf config_size;
+ uLongf xconfig_size;
+
+ msg = (const struct GNUNET_TESTBED_HelperReply *) message;
+ GNUNET_assert (sizeof (struct GNUNET_TESTBED_HelperReply) <
+ ntohs (msg->header.size));
+ GNUNET_assert (GNUNET_MESSAGE_TYPE_TESTBED_HELPER_REPLY ==
+ ntohs (msg->header.type));
+ config_size = (uLongf) ntohs (msg->config_size);
+ xconfig_size =
+ (uLongf) (ntohs (msg->header.size) -
+ sizeof (struct GNUNET_TESTBED_HelperReply));
+ config = GNUNET_malloc (config_size);
+ GNUNET_assert (Z_OK ==
+ uncompress ((Bytef *) config, &config_size,
+ (const Bytef *) &msg[1], xconfig_size));
+ /* Replace the configuration template present in the host with the
+ controller's running configuration */
+ GNUNET_CONFIGURATION_destroy (cp->host->cfg);
+ cp->host->cfg = GNUNET_CONFIGURATION_create ();
+ GNUNET_assert (GNUNET_CONFIGURATION_deserialize
+ (cp->host->cfg, config, config_size, GNUNET_NO));
+ GNUNET_free (config);
+ if (NULL == (hostname = GNUNET_TESTBED_host_get_hostname (cp->host)))
+ hostname = "localhost";
+ /* Change the hostname so that we can connect to it */
+ GNUNET_CONFIGURATION_set_value_string (cp->host->cfg, "testbed", "hostname",
+ hostname);
+ cp->host->locked = GNUNET_NO;
+ cp->host->controller_started = GNUNET_YES;
+ cp->cb (cp->cls, cp->host->cfg, GNUNET_OK);
+ return GNUNET_OK;
+}
+
+
+/**
+ * Continuation function from GNUNET_HELPER_send()
+ *
+ * @param cls closure
+ * @param result GNUNET_OK on success,
+ * GNUNET_NO if helper process died
+ * GNUNET_SYSERR during GNUNET_HELPER_stop
+ */
+static void
+clear_msg (void *cls, int result)
+{
+ struct GNUNET_TESTBED_ControllerProc *cp = cls;
+
+ GNUNET_assert (NULL != cp->shandle);
+ cp->shandle = NULL;
+ GNUNET_free (cp->msg);
+ cp->msg = NULL;
+}
+
+
+/**
+ * Callback that will be called when the helper process dies. This is not called
+ * when the helper process is stoped using GNUNET_HELPER_stop()
+ *
+ * @param cls the closure from GNUNET_HELPER_start()
+ */
+static void
+helper_exp_cb (void *cls)
+{
+ struct GNUNET_TESTBED_ControllerProc *cp = cls;
+ GNUNET_TESTBED_ControllerStatusCallback cb;
+ void *cb_cls;
+
+ cb = cp->cb;
+ cb_cls = cp->cls;
+ cp->helper = NULL;
+ GNUNET_TESTBED_controller_stop (cp);
+ if (NULL != cb)
+ cb (cb_cls, NULL, GNUNET_SYSERR);
+}
+
+
+/**
+ * Starts a controller process at the given host. The given host's configration
+ * is used as a Template configuration to use for the remote controller; the
+ * remote controller will be started with a slightly modified configuration
+ * (port numbers, unix domain sockets and service home values are changed as per
+ * TESTING library on the remote host). The modified configuration replaces the
+ * host's existing configuration before signalling success through the
+ * GNUNET_TESTBED_ControllerStatusCallback()
+ *
+ * @param trusted_ip the ip address of the controller which will be set as TRUSTED
+ * HOST(all connections form this ip are permitted by the testbed) when
+ * starting testbed controller at host. This can either be a single ip
+ * address or a network address in CIDR notation.
+ * @param host the host where the controller has to be started. CANNOT be NULL.
+ * @param cb function called when the controller is successfully started or
+ * dies unexpectedly; GNUNET_TESTBED_controller_stop shouldn't be
+ * called if cb is called with GNUNET_SYSERR as status. Will never be
+ * called in the same task as 'GNUNET_TESTBED_controller_start'
+ * (synchronous errors will be signalled by returning NULL). This
+ * parameter cannot be NULL.
+ * @param cls closure for above callbacks
+ * @return the controller process handle, NULL on errors
+ */
+struct GNUNET_TESTBED_ControllerProc *
+GNUNET_TESTBED_controller_start (const char *trusted_ip,
+ struct GNUNET_TESTBED_Host *host,
+ GNUNET_TESTBED_ControllerStatusCallback cb,
+ void *cls)
+{
+ struct GNUNET_TESTBED_ControllerProc *cp;
+ struct GNUNET_TESTBED_HelperInit *msg;
+ const struct GNUNET_CONFIGURATION_Handle *cfg;
+ const char *hostname;
+ static char *const binary_argv[] = {
+ HELPER_TESTBED_BINARY, NULL
+ };
- if (0 == host->unique_id)
- return GNUNET_HELPER_start ("gnunet-service-testbed", local_args,
- cb, cb_cls);
+ GNUNET_assert (NULL != host);
+ GNUNET_assert (NULL != (cfg = GNUNET_TESTBED_host_get_cfg_ (host)));
+ hostname = NULL;
+ API_VIOLATION (GNUNET_NO == host->locked,
+ "Host is already locked by a previous call to GNUNET_TESTBED_controller_start()");
+ host->locked = GNUNET_YES;
+ API_VIOLATION (GNUNET_NO == host->controller_started,
+ "Attempting to start a controller on a host which is already started a controller");
+ cp = GNUNET_malloc (sizeof (struct GNUNET_TESTBED_ControllerProc));
+ if (0 == GNUNET_TESTBED_host_get_id_ (host))
+ {
+ cp->helper =
+ GNUNET_HELPER_start (GNUNET_YES, HELPER_TESTBED_BINARY, binary_argv,
+ &helper_mst, &helper_exp_cb, cp);
+ }
else
{
- GNUNET_asprintf (&port, "%d", host->port);
- GNUNET_asprintf (&dst, "%s@%s", host->hostname, host->username);
- h = GNUNET_HELPER_start ("ssh", remote_args, cb, cb_cls);
- GNUNET_free (port); /* FIXME: Can we free them? */
- GNUNET_free (dst);
- return h;
+ char *helper_binary_path_args[2];
+ char **rsh_args;
+ char **rsh_suffix_args;
+ const char *username;
+ char *port;
+ char *argstr;
+ char *aux;
+ unsigned int cnt;
+
+ username = host->username;
+ hostname = host->hostname;
+ GNUNET_asprintf (&port, "%u", host->port);
+ LOG_DEBUG ("Starting remote connection to destination %s\n", hostname);
+ if (GNUNET_OK !=
+ GNUNET_CONFIGURATION_get_value_filename (cfg, "testbed",
+ "HELPER_BINARY_PATH",
+ &helper_binary_path_args[0]))
+ helper_binary_path_args[0] =
+ GNUNET_OS_get_libexec_binary_path (HELPER_TESTBED_BINARY);
+ helper_binary_path_args[1] = NULL;
+ rsh_args = gen_rsh_args (port, hostname, username);
+ rsh_suffix_args = gen_rsh_suffix_args ((const char **) helper_binary_path_args);
+ cp->helper_argv =
+ join_argv ((const char **) rsh_args, (const char **) rsh_suffix_args);
+ free_argv (rsh_args);
+ free_argv (rsh_suffix_args);
+ GNUNET_free (port);
+ argstr = GNUNET_strdup ("");
+ for (cnt = 0; NULL != cp->helper_argv[cnt]; cnt++)
+ {
+ aux = argstr;
+ GNUNET_assert (0 < GNUNET_asprintf (&argstr, "%s %s", aux, cp->helper_argv[cnt]));
+ GNUNET_free (aux);
+ }
+ LOG_DEBUG ("Helper cmd str: %s\n", argstr);
+ GNUNET_free (argstr);
+ cp->helper =
+ GNUNET_HELPER_start (GNUNET_NO, cp->helper_argv[0], cp->helper_argv, &helper_mst,
+ &helper_exp_cb, cp);
+ GNUNET_free (helper_binary_path_args[0]);
+ }
+ if (NULL == cp->helper)
+ {
+ if (NULL != cp->helper_argv)
+ free_argv (cp->helper_argv);
+ GNUNET_free (cp);
+ return NULL;
+ }
+ cp->host = host;
+ cp->cb = cb;
+ cp->cls = cls;
+ msg = GNUNET_TESTBED_create_helper_init_msg_ (trusted_ip, hostname, cfg);
+ cp->msg = &msg->header;
+ cp->shandle =
+ GNUNET_HELPER_send (cp->helper, &msg->header, GNUNET_NO, &clear_msg, cp);
+ if (NULL == cp->shandle)
+ {
+ GNUNET_free (msg);
+ GNUNET_TESTBED_controller_stop (cp);
+ return NULL;
+ }
+ return cp;
+}
+
+
+/**
+ * Sends termination signal to the controller's helper process
+ *
+ * @param cproc the handle to the controller's helper process
+ */
+void
+GNUNET_TESTBED_controller_kill_ (struct GNUNET_TESTBED_ControllerProc *cproc)
+{
+ if (NULL != cproc->shandle)
+ GNUNET_HELPER_send_cancel (cproc->shandle);
+ if (NULL != cproc->helper)
+ GNUNET_HELPER_kill (cproc->helper, GNUNET_YES);
+}
+
+
+/**
+ * Cleans-up the controller's helper process handle
+ *
+ * @param cproc the handle to the controller's helper process
+ */
+void
+GNUNET_TESTBED_controller_destroy_ (struct GNUNET_TESTBED_ControllerProc *cproc)
+{
+ if (NULL != cproc->helper)
+ {
+ GNUNET_break (GNUNET_OK == GNUNET_HELPER_wait (cproc->helper));
+ GNUNET_HELPER_destroy (cproc->helper);
}
+ if (NULL != cproc->helper_argv)
+ free_argv (cproc->helper_argv);
+ cproc->host->controller_started = GNUNET_NO;
+ cproc->host->locked = GNUNET_NO;
+ GNUNET_free_non_null (cproc->msg);
+ GNUNET_free (cproc);
}
+/**
+ * Stop the controller process (also will terminate all peers and controllers
+ * dependent on this controller). This function blocks until the testbed has
+ * been fully terminated (!). The controller status cb from
+ * GNUNET_TESTBED_controller_start() will not be called.
+ *
+ * @param cproc the controller process handle
+ */
+void
+GNUNET_TESTBED_controller_stop (struct GNUNET_TESTBED_ControllerProc *cproc)
+{
+ GNUNET_TESTBED_controller_kill_ (cproc);
+ GNUNET_TESTBED_controller_destroy_ (cproc);
+}
+
+
+/**
+ * The handle for whether a host is habitable or not
+ */
+struct GNUNET_TESTBED_HostHabitableCheckHandle
+{
+ /**
+ * The host to check
+ */
+ const struct GNUNET_TESTBED_Host *host;
+
+ /**
+ * The callback to call once we have the status
+ */
+ GNUNET_TESTBED_HostHabitableCallback cb;
+
+ /**
+ * The callback closure
+ */
+ void *cb_cls;
+
+ /**
+ * The process handle for the SSH process
+ */
+ struct GNUNET_OS_Process *auxp;
+
+ /**
+ * The arguments used to start the helper
+ */
+ char **helper_argv;
+
+ /**
+ * Task id for the habitability check task
+ */
+ GNUNET_SCHEDULER_TaskIdentifier habitability_check_task;
+
+ /**
+ * How long we wait before checking the process status. Should grow
+ * exponentially
+ */
+ struct GNUNET_TIME_Relative wait_time;
+
+};
+
+
+/**
+ * Task for checking whether a host is habitable or not
+ *
+ * @param cls GNUNET_TESTBED_HostHabitableCheckHandle
+ * @param tc the scheduler task context
+ */
+static void
+habitability_check (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
+{
+ struct GNUNET_TESTBED_HostHabitableCheckHandle *h = cls;
+ void *cb_cls;
+ GNUNET_TESTBED_HostHabitableCallback cb;
+ const struct GNUNET_TESTBED_Host *host;
+ unsigned long code;
+ enum GNUNET_OS_ProcessStatusType type;
+ int ret;
+
+ h->habitability_check_task = GNUNET_SCHEDULER_NO_TASK;
+ ret = GNUNET_OS_process_status (h->auxp, &type, &code);
+ if (GNUNET_SYSERR == ret)
+ {
+ GNUNET_break (0);
+ ret = GNUNET_NO;
+ goto call_cb;
+ }
+ if (GNUNET_NO == ret)
+ {
+ h->wait_time = GNUNET_TIME_STD_BACKOFF (h->wait_time);
+ h->habitability_check_task =
+ GNUNET_SCHEDULER_add_delayed (h->wait_time, &habitability_check, h);
+ return;
+ }
+ GNUNET_OS_process_destroy (h->auxp);
+ h->auxp = NULL;
+ ret = (0 != code) ? GNUNET_NO : GNUNET_YES;
+
+call_cb:
+ if (NULL != h->auxp)
+ GNUNET_OS_process_destroy (h->auxp);
+ cb = h->cb;
+ cb_cls = h->cb_cls;
+ host = h->host;
+ free_argv (h->helper_argv);
+ GNUNET_free (h);
+ if (NULL != cb)
+ cb (cb_cls, host, ret);
+}
+
+
+/**
+ * Checks whether a host can be used to start testbed service
+ *
+ * @param host the host to check
+ * @param config the configuration handle to lookup the path of the testbed
+ * helper
+ * @param cb the callback to call to inform about habitability of the given host
+ * @param cb_cls the closure for the callback
+ * @return NULL upon any error or a handle which can be passed to
+ * GNUNET_TESTBED_is_host_habitable_cancel()
+ */
+struct GNUNET_TESTBED_HostHabitableCheckHandle *
+GNUNET_TESTBED_is_host_habitable (const struct GNUNET_TESTBED_Host *host,
+ const struct GNUNET_CONFIGURATION_Handle
+ *config,
+ GNUNET_TESTBED_HostHabitableCallback cb,
+ void *cb_cls)
+{
+ struct GNUNET_TESTBED_HostHabitableCheckHandle *h;
+ char **rsh_args;
+ char **rsh_suffix_args;
+ char *stat_args[3];
+ const char *hostname;
+ char *port;
+
+ h = GNUNET_malloc (sizeof (struct GNUNET_TESTBED_HostHabitableCheckHandle));
+ h->cb = cb;
+ h->cb_cls = cb_cls;
+ h->host = host;
+ hostname = (NULL == host->hostname) ? "127.0.0.1" : host->hostname;
+ if (GNUNET_OK !=
+ GNUNET_CONFIGURATION_get_value_filename (config, "testbed",
+ "HELPER_BINARY_PATH",
+ &stat_args[1]))
+ stat_args[1] =
+ GNUNET_OS_get_libexec_binary_path (HELPER_TESTBED_BINARY);
+ GNUNET_asprintf (&port, "%u", host->port);
+ rsh_args = gen_rsh_args (port, hostname, host->username);
+ GNUNET_free (port);
+ port = NULL;
+ stat_args[0] = "stat";
+ stat_args[2] = NULL;
+ rsh_suffix_args = gen_rsh_suffix_args ((const char **) stat_args);
+ GNUNET_free (stat_args[1]);
+ h->helper_argv = join_argv ((const char **) rsh_args,
+ (const char **) rsh_suffix_args);
+ free_argv (rsh_suffix_args);
+ free_argv (rsh_args);
+ h->auxp =
+ GNUNET_OS_start_process_vap (GNUNET_NO, GNUNET_OS_INHERIT_STD_ERR, NULL,
+ NULL, h->helper_argv[0], h->helper_argv);
+ if (NULL == h->auxp)
+ {
+ GNUNET_break (0); /* Cannot exec SSH? */
+ GNUNET_free (h);
+ return NULL;
+ }
+ h->wait_time = GNUNET_TIME_STD_BACKOFF (h->wait_time);
+ h->habitability_check_task =
+ GNUNET_SCHEDULER_add_delayed (h->wait_time, &habitability_check, h);
+ return h;
+}
+
+
+/**
+ * Function to cancel a request started using GNUNET_TESTBED_is_host_habitable()
+ *
+ * @param handle the habitability check handle
+ */
+void
+GNUNET_TESTBED_is_host_habitable_cancel (struct
+ GNUNET_TESTBED_HostHabitableCheckHandle
+ *handle)
+{
+ GNUNET_SCHEDULER_cancel (handle->habitability_check_task);
+ (void) GNUNET_OS_process_kill (handle->auxp, GNUNET_TERM_SIG);
+ (void) GNUNET_OS_process_wait (handle->auxp);
+ GNUNET_OS_process_destroy (handle->auxp);
+ free_argv (handle->helper_argv);
+ GNUNET_free (handle);
+}
+
+
+/**
+ * handle for host registration
+ */
+struct GNUNET_TESTBED_HostRegistrationHandle
+{
+ /**
+ * The host being registered
+ */
+ struct GNUNET_TESTBED_Host *host;
+
+ /**
+ * The controller at which this host is being registered
+ */
+ struct GNUNET_TESTBED_Controller *c;
+
+ /**
+ * The Registartion completion callback
+ */
+ GNUNET_TESTBED_HostRegistrationCompletion cc;
+
+ /**
+ * The closure for above callback
+ */
+ void *cc_cls;
+};
+
+
+/**
+ * Register a host with the controller
+ *
+ * @param controller the controller handle
+ * @param host the host to register
+ * @param cc the completion callback to call to inform the status of
+ * registration. After calling this callback the registration handle
+ * will be invalid. Cannot be NULL.
+ * @param cc_cls the closure for the cc
+ * @return handle to the host registration which can be used to cancel the
+ * registration
+ */
+struct GNUNET_TESTBED_HostRegistrationHandle *
+GNUNET_TESTBED_register_host (struct GNUNET_TESTBED_Controller *controller,
+ struct GNUNET_TESTBED_Host *host,
+ GNUNET_TESTBED_HostRegistrationCompletion cc,
+ void *cc_cls)
+{
+ struct GNUNET_TESTBED_HostRegistrationHandle *rh;
+ struct GNUNET_TESTBED_AddHostMessage *msg;
+ const char *username;
+ const char *hostname;
+ char *config;
+ char *cconfig;
+ void *ptr;
+ size_t cc_size;
+ size_t config_size;
+ uint16_t msg_size;
+ uint16_t username_length;
+ uint16_t hostname_length;
+
+ if (NULL != controller->rh)
+ return NULL;
+ hostname = GNUNET_TESTBED_host_get_hostname (host);
+ if (GNUNET_YES == GNUNET_TESTBED_is_host_registered_ (host, controller))
+ {
+ LOG (GNUNET_ERROR_TYPE_WARNING, "Host hostname: %s already registered\n",
+ (NULL == hostname) ? "localhost" : hostname);
+ return NULL;
+ }
+ rh = GNUNET_malloc (sizeof (struct GNUNET_TESTBED_HostRegistrationHandle));
+ rh->host = host;
+ rh->c = controller;
+ GNUNET_assert (NULL != cc);
+ rh->cc = cc;
+ rh->cc_cls = cc_cls;
+ controller->rh = rh;
+ username = GNUNET_TESTBED_host_get_username_ (host);
+ username_length = 0;
+ if (NULL != username)
+ username_length = strlen (username);
+ GNUNET_assert (NULL != hostname); /* Hostname must be present */
+ hostname_length = strlen (hostname);
+ GNUNET_assert (NULL != host->cfg);
+ config = GNUNET_CONFIGURATION_serialize (host->cfg, &config_size);
+ cc_size = GNUNET_TESTBED_compress_config_ (config, config_size, &cconfig);
+ GNUNET_free (config);
+ msg_size = (sizeof (struct GNUNET_TESTBED_AddHostMessage));
+ msg_size += username_length;
+ msg_size += hostname_length;
+ msg_size += cc_size;
+ msg = GNUNET_malloc (msg_size);
+ msg->header.size = htons (msg_size);
+ msg->header.type = htons (GNUNET_MESSAGE_TYPE_TESTBED_ADD_HOST);
+ msg->host_id = htonl (GNUNET_TESTBED_host_get_id_ (host));
+ msg->ssh_port = htons (GNUNET_TESTBED_host_get_ssh_port_ (host));
+ ptr = &msg[1];
+ if (NULL != username)
+ {
+ msg->username_length = htons (username_length);
+ ptr = memcpy (ptr, username, username_length);
+ ptr += username_length;
+ }
+ msg->hostname_length = htons (hostname_length);
+ ptr = memcpy (ptr, hostname, hostname_length);
+ ptr += hostname_length;
+ msg->config_size = htons (config_size);
+ ptr = memcpy (ptr, cconfig, cc_size);
+ ptr += cc_size;
+ GNUNET_assert ((ptr - (void *) msg) == msg_size);
+ GNUNET_free (cconfig);
+ GNUNET_TESTBED_queue_message_ (controller,
+ (struct GNUNET_MessageHeader *) msg);
+ return rh;
+}
+
+
+/**
+ * Cancel the pending registration. Note that if the registration message is
+ * already sent to the service the cancellation has only the effect that the
+ * registration completion callback for the registration is never called.
+ *
+ * @param handle the registration handle to cancel
+ */
+void
+GNUNET_TESTBED_cancel_registration (struct GNUNET_TESTBED_HostRegistrationHandle
+ *handle)
+{
+ if (handle != handle->c->rh)
+ {
+ GNUNET_break (0);
+ return;
+ }
+ handle->c->rh = NULL;
+ GNUNET_free (handle);
+}
+
+
+/**
+ * Queues the given operation in the queue for parallel overlay connects of the
+ * given host
+ *
+ * @param h the host handle
+ * @param op the operation to queue in the given host's parally overlay connect
+ * queue
+ */
+void
+GNUNET_TESTBED_host_queue_oc_ (struct GNUNET_TESTBED_Host *h,
+ struct GNUNET_TESTBED_Operation *op)
+{
+ GNUNET_TESTBED_operation_queue_insert_
+ (h->opq_parallel_overlay_connect_operations, op);
+}
+
+
+/**
+ * Handler for GNUNET_MESSAGE_TYPE_TESTBED_ADDHOSTCONFIRM message from
+ * controller (testbed service)
+ *
+ * @param c the controller handler
+ * @param msg message received
+ * @return GNUNET_YES if we can continue receiving from service; GNUNET_NO if
+ * not
+ */
+int
+GNUNET_TESTBED_host_handle_addhostconfirm_ (struct GNUNET_TESTBED_Controller *c,
+ const struct
+ GNUNET_TESTBED_HostConfirmedMessage
+ *msg)
+{
+ struct GNUNET_TESTBED_HostRegistrationHandle *rh;
+ char *emsg;
+ uint16_t msg_size;
+
+ rh = c->rh;
+ if (NULL == rh)
+ {
+ return GNUNET_OK;
+ }
+ if (GNUNET_TESTBED_host_get_id_ (rh->host) != ntohl (msg->host_id))
+ {
+ LOG_DEBUG ("Mismatch in host id's %u, %u of host confirm msg\n",
+ GNUNET_TESTBED_host_get_id_ (rh->host), ntohl (msg->host_id));
+ return GNUNET_OK;
+ }
+ c->rh = NULL;
+ msg_size = ntohs (msg->header.size);
+ if (sizeof (struct GNUNET_TESTBED_HostConfirmedMessage) == msg_size)
+ {
+ LOG_DEBUG ("Host %u successfully registered\n", ntohl (msg->host_id));
+ GNUNET_TESTBED_mark_host_registered_at_ (rh->host, c);
+ rh->cc (rh->cc_cls, NULL);
+ GNUNET_free (rh);
+ return GNUNET_OK;
+ }
+ /* We have an error message */
+ emsg = (char *) &msg[1];
+ if ('\0' !=
+ emsg[msg_size - sizeof (struct GNUNET_TESTBED_HostConfirmedMessage)])
+ {
+ GNUNET_break (0);
+ GNUNET_free (rh);
+ return GNUNET_NO;
+ }
+ LOG (GNUNET_ERROR_TYPE_ERROR, _("Adding host %u failed with error: %s\n"),
+ ntohl (msg->host_id), emsg);
+ rh->cc (rh->cc_cls, emsg);
+ GNUNET_free (rh);
+ return GNUNET_OK;
+}
+
+
+/**
+ * Resolves the hostname of the host to an ip address
+ *
+ * @param host the host whose hostname is to be resolved
+ */
+void
+GNUNET_TESTBED_host_resolve_ (struct GNUNET_TESTBED_Host *host)
+{
+ char *hostname;
+
+ hostname = (char *) host->hostname;
+ host->hostname = simple_resolve (hostname);
+ if (NULL == host->hostname)
+ {
+ GNUNET_break (0);
+ host->hostname = hostname;
+ return;
+ }
+ GNUNET_free (hostname);
+ host->hostname = GNUNET_strdup (host->hostname);
+}
+
/* end of testbed_api_hosts.c */
projects / oweals / gnunet.git / blobdiff