2 This file is part of GNUnet
3 (C) 2008, 2009, 2012 Christian Grothoff (and other contributing authors)
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6 it under the terms of the GNU General Public License as published
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13 General Public License for more details.
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22 * @file include/gnunet_testing_lib.h
23 * @brief convenience API for writing testcases for GNUnet;
24 * can start/stop one or more peers on a system;
25 * testing is responsible for managing private keys,
26 * ports and paths; it is a low-level library that
27 * does not support higher-level functions such as
28 * P2P connection, topology management or distributed
29 * testbed maintenance (those are in gnunet_testbed_service.h)
30 * @author Christian Grothoff
33 #ifndef GNUNET_TESTING_LIB_H
34 #define GNUNET_TESTING_LIB_H
36 #include "gnunet_util_lib.h"
37 #include "gnunet_statistics_service.h"
38 #include "gnunet_arm_service.h"
43 #if 0 /* keep Emacsens' auto-indent happy */
49 * Size of each hostkey in the hostkey file (in BYTES).
51 #define GNUNET_TESTING_HOSTKEYFILESIZE sizeof (struct GNUNET_CRYPTO_EccPrivateKey)
54 * Handle for a system on which GNUnet peers are executed;
55 * a system is used for reserving unique paths and ports.
57 struct GNUNET_TESTING_System;
61 * Handle for a GNUnet peer controlled by testing.
63 struct GNUNET_TESTING_Peer;
67 * Specification of a service that is to be shared among peers
69 struct GNUNET_TESTING_SharedService
72 * The name of the service.
77 * The configuration template for the service. Cannot be NULL
79 const struct GNUNET_CONFIGURATION_Handle *cfg;
82 * The number of peers which share an instance of the service. 0 for sharing
90 * Create a system handle. There must only be one system handle per operating
91 * system. Uses a default range for allowed ports. Ports are still tested for
94 * @param testdir only the directory name without any path. This is used for all
95 * service homes; the directory will be created in a temporary location
96 * depending on the underlying OS
97 * @param trusted_ip the ip address which will be set as TRUSTED HOST in all
98 * service configurations generated to allow control connections from
99 * this ip. This can either be a single ip address or a network address
101 * @param hostname the hostname of the system we are using for testing; NULL for
103 * @param shared_services NULL terminated array describing services that are to
104 * be shared among peers
105 * @return handle to this system, NULL on error
107 struct GNUNET_TESTING_System *
108 GNUNET_TESTING_system_create (const char *testdir,
109 const char *trusted_ip,
110 const char *hostname,
111 const struct GNUNET_TESTING_SharedService *
116 * Create a system handle. There must only be one system
117 * handle per operating system. Use this function directly
118 * if multiple system objects are created for the same host
119 * (only really useful when testing --- or to make the port
120 * range configureable).
122 * @param testdir only the directory name without any path. This is used for
123 * all service homes; the directory will be created in a temporary
124 * location depending on the underlying OS
125 * @param trusted_ip the ip address which will be set as TRUSTED HOST in all
126 * service configurations generated to allow control connections from
127 * this ip. This can either be a single ip address or a network address
129 * @param hostname the hostname of the system we are using for testing; NULL for
131 * @param shared_services NULL terminated array describing services that are to
132 * be shared among peers
133 * @param lowport lowest port number this system is allowed to allocate (inclusive)
134 * @param highport highest port number this system is allowed to allocate (exclusive)
135 * @return handle to this system, NULL on error
137 struct GNUNET_TESTING_System *
138 GNUNET_TESTING_system_create_with_portrange (const char *testdir,
139 const char *trusted_ip,
140 const char *hostname,
142 GNUNET_TESTING_SharedService *
149 * Free system resources.
151 * @param system system to be freed
152 * @param remove_paths should the 'testdir' and all subdirectories
153 * be removed (clean up on shutdown)?
156 GNUNET_TESTING_system_destroy (struct GNUNET_TESTING_System *system,
161 * Testing includes a number of pre-created hostkeys for
162 * faster peer startup. This function can be used to
163 * access the n-th key of those pre-created hostkeys; note
164 * that these keys are ONLY useful for testing and not
165 * secure as the private keys are part of the public
166 * GNUnet source code.
168 * This is primarily a helper function used internally
169 * by 'GNUNET_TESTING_peer_configure'.
171 * @param system the testing system handle
172 * @param key_number desired pre-created hostkey to obtain
173 * @param id set to the peer's identity (hash of the public
174 * key; if NULL, GNUNET_SYSERR is returned immediately
175 * @return NULL on error (not enough keys)
177 struct GNUNET_CRYPTO_EccPrivateKey *
178 GNUNET_TESTING_hostkey_get (const struct GNUNET_TESTING_System *system,
180 struct GNUNET_PeerIdentity *id);
184 * Reserve a port for a peer.
186 * @param system system to use for reservation tracking
187 * @return 0 if no free port was available
190 GNUNET_TESTING_reserve_port (struct GNUNET_TESTING_System *system);
194 * Release reservation of a TCP or UDP port for a peer
195 * (used during GNUNET_TESTING_peer_destroy).
197 * @param system system to use for reservation tracking
198 * @param port reserved port to release
201 GNUNET_TESTING_release_port (struct GNUNET_TESTING_System *system,
206 * Create a new configuration using the given configuration as a template;
207 * ports and paths will be modified to select available ports on the local
208 * system. The default configuration will be available in PATHS section under
209 * the option DEFAULTCONFIG after the call. SERVICE_HOME is also set in PATHS
210 * section to the temporary directory specific to this configuration. If we run
211 * out of "*port" numbers, return SYSERR.
213 * This is primarily a helper function used internally
214 * by 'GNUNET_TESTING_peer_configure'.
216 * @param system system to use to coordinate resource usage
217 * @param cfg template configuration to update
218 * @return GNUNET_OK on success, GNUNET_SYSERR on error - the configuration will
219 * be incomplete and should not be used there upon
222 GNUNET_TESTING_configuration_create (struct GNUNET_TESTING_System *system,
223 struct GNUNET_CONFIGURATION_Handle *cfg);
224 // FIXME: add dual to 'release' ports again...
228 * Configure a GNUnet peer. GNUnet must be installed on the local
229 * system and available in the PATH.
231 * @param system system to use to coordinate resource usage
232 * @param cfg configuration to use; will be UPDATED (to reflect needed
233 * changes in port numbers and paths)
234 * @param key_number number of the hostkey to use for the peer
235 * @param id identifier for the daemon, will be set, can be NULL
236 * @param emsg set to freshly allocated error message (set to NULL on success),
238 * @return handle to the peer, NULL on error
240 struct GNUNET_TESTING_Peer *
241 GNUNET_TESTING_peer_configure (struct GNUNET_TESTING_System *system,
242 struct GNUNET_CONFIGURATION_Handle *cfg,
244 struct GNUNET_PeerIdentity *id,
249 * Obtain the peer identity from a peer handle.
251 * @param peer peer handle for which we want the peer's identity
252 * @param id identifier for the daemon, will be set
255 GNUNET_TESTING_peer_get_identity (struct GNUNET_TESTING_Peer *peer,
256 struct GNUNET_PeerIdentity *id);
262 * @param peer peer to start
263 * @return GNUNET_OK on success, GNUNET_SYSERR on error (i.e. peer already running)
266 GNUNET_TESTING_peer_start (struct GNUNET_TESTING_Peer *peer);
270 * Stop the peer. This call is blocking as it kills the peer's main ARM process
271 * by sending a SIGTERM and waits on it. For asynchronous shutdown of peer, see
272 * GNUNET_TESTING_peer_stop_async().
274 * @param peer peer to stop
275 * @return GNUNET_OK on success, GNUNET_SYSERR on error (i.e. peer not running)
278 GNUNET_TESTING_peer_stop (struct GNUNET_TESTING_Peer *peer);
282 * Destroy the peer. Releases resources locked during peer configuration.
283 * If the peer is still running, it will be stopped AND a warning will be
284 * printed (users of the API should stop the peer explicitly first).
286 * @param peer peer to destroy
289 GNUNET_TESTING_peer_destroy (struct GNUNET_TESTING_Peer *peer);
293 * Sends SIGTERM to the peer's main process
295 * @param peer the handle to the peer
296 * @return GNUNET_OK if successful; GNUNET_SYSERR if the main process is NULL
297 * or upon any error while sending SIGTERM
300 GNUNET_TESTING_peer_kill (struct GNUNET_TESTING_Peer *peer);
304 * Waits for a peer to terminate. The peer's main process will also be destroyed.
306 * @param peer the handle to the peer
307 * @return GNUNET_OK if successful; GNUNET_SYSERR if the main process is NULL
308 * or upon any error while waiting
311 GNUNET_TESTING_peer_wait (struct GNUNET_TESTING_Peer *peer);
315 * Callback to inform whether the peer is running or stopped.
317 * @param cls the closure given to GNUNET_TESTING_peer_stop_async()
318 * @param peer the respective peer whose status is being reported
319 * @param success GNUNET_YES if the peer is stopped; GNUNET_SYSERR upon any
322 typedef void (*GNUNET_TESTING_PeerStopCallback) (void *cls,
323 struct GNUNET_TESTING_Peer *
329 * Stop a peer asynchronously using ARM API. Peer's shutdown is signaled
330 * through the GNUNET_TESTING_PeerStopCallback().
332 * @param peer the peer to stop
333 * @param cb the callback to signal peer shutdown
334 * @param cb_cls closure for the above callback
335 * @return GNUNET_OK upon successfully giving the request to the ARM API (this
336 * does not mean that the peer is successfully stopped); GNUNET_SYSERR
340 GNUNET_TESTING_peer_stop_async (struct GNUNET_TESTING_Peer *peer,
341 GNUNET_TESTING_PeerStopCallback cb,
346 * Cancel a previous asynchronous peer stop request.
347 * GNUNET_TESTING_peer_stop_async() should have been called before on the given
348 * peer. It is an error to call this function if the peer stop callback was
351 * @param peer the peer on which GNUNET_TESTING_peer_stop_async() was called
355 GNUNET_TESTING_peer_stop_async_cancel (struct GNUNET_TESTING_Peer *peer);
359 * Signature of the 'main' function for a (single-peer) testcase that
360 * is run using 'GNUNET_TESTING_peer_run'.
363 * @param cfg configuration of the peer that was started
364 * @param peer identity of the peer that was created
366 typedef void (*GNUNET_TESTING_TestMain) (void *cls,
367 const struct GNUNET_CONFIGURATION_Handle *cfg,
368 struct GNUNET_TESTING_Peer *peer);
372 * Start a single peer and run a test using the testing library.
373 * Starts a peer using the given configuration and then invokes the
374 * given callback. This function ALSO initializes the scheduler loop
375 * and should thus be called directly from "main". The testcase
376 * should self-terminate by invoking 'GNUNET_SCHEDULER_shutdown'.
378 * @param testdir only the directory name without any path. This is used for
379 * all service homes; the directory will be created in a temporary
380 * location depending on the underlying OS
381 * @param cfgfilename name of the configuration file to use;
382 * use NULL to only run with defaults
383 * @param tm main function of the testcase
384 * @param tm_cls closure for 'tm'
385 * @return 0 on success, 1 on error
388 GNUNET_TESTING_peer_run (const char *testdir,
389 const char *cfgfilename,
390 GNUNET_TESTING_TestMain tm,
395 * Start a single service (no ARM, except of course if the given
396 * service name is 'arm') and run a test using the testing library.
397 * Starts a service using the given configuration and then invokes the
398 * given callback. This function ALSO initializes the scheduler loop
399 * and should thus be called directly from "main". The testcase
400 * should self-terminate by invoking 'GNUNET_SCHEDULER_shutdown'.
402 * This function is useful if the testcase is for a single service
403 * and if that service doesn't itself depend on other services.
405 * @param testdir only the directory name without any path. This is used for
406 * all service homes; the directory will be created in a temporary
407 * location depending on the underlying OS
408 * @param service_name name of the service to run
409 * @param cfgfilename name of the configuration file to use;
410 * use NULL to only run with defaults
411 * @param tm main function of the testcase
412 * @param tm_cls closure for 'tm'
413 * @return 0 on success, 1 on error
416 GNUNET_TESTING_service_run (const char *testdir,
417 const char *service_name,
418 const char *cfgfilename,
419 GNUNET_TESTING_TestMain tm,
424 * Sometimes we use the binary name to determine which specific
425 * test to run. In those cases, the string after the last "_"
426 * in 'argv[0]' specifies a string that determines the configuration
427 * file or plugin to use.
429 * This function returns the respective substring, taking care
430 * of issues such as binaries ending in '.exe' on W32.
432 * @param argv0 the name of the binary
433 * @return string between the last '_' and the '.exe' (or the end of the string),
434 * NULL if argv0 has no '_'
437 GNUNET_TESTING_get_testname_from_underscore (const char *argv0);
440 #if 0 /* keep Emacsens' auto-indent happy */