-renaming testing-new.h to testing.h, bumping library versions

1 files changed, 372 insertions, 0 deletions

diff --git a/src/include/gnunet_testing_lib.h b/src/include/gnunet_testing_lib.h
new file mode 100644
index 0000000000..c34166b2e3
--- /dev/null
+++ b/src/include/gnunet_testing_lib.h
@@ -0,0 +1,372 @@
+/*
+      This file is part of GNUnet
+      (C) 2008, 2009, 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
+      by the Free Software Foundation; either version 3, or (at your
+      option) any later version.
+
+      GNUnet 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 GNUnet; see the file COPYING.  If not, write to the
+      Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+      Boston, MA 02111-1307, USA.
+ */
+
+/**
+ * @file include/gnunet_testing_lib.h
+ * @brief convenience API for writing testcases for GNUnet;
+ *        can start/stop one or more peers on a system;
+ *        testing is responsible for managing private keys,
+ *        ports and paths; it is a low-level library that
+ *        does not support higher-level functions such as
+ *        P2P connection, topology management or distributed
+ *        testbed maintenance (those are in gnunet_testbed_service.h)
+ * @author Christian Grothoff
+ */
+
+#ifndef GNUNET_TESTING_LIB_H
+#define GNUNET_TESTING_LIB_H
+
+#include "gnunet_util_lib.h"
+#include "gnunet_statistics_service.h"
+
+#ifdef __cplusplus
+extern "C"
+{
+#if 0                           /* keep Emacsens' auto-indent happy */
+}
+#endif
+#endif
+
+#define GNUNET_TESTING_HOSTKEYFILESIZE 914
+
+/**
+ * Handle for a system on which GNUnet peers are executed;
+ * a system is used for reserving unique paths and ports.
+ */
+struct GNUNET_TESTING_System;
+
+
+/**
+ * Handle for a GNUnet peer controlled by testing.
+ */
+struct GNUNET_TESTING_Peer;
+
+
+/**
+ * Create a system handle.  There must only be one system handle per operating
+ * system.  Uses a default range for allowed ports.  Ports are still tested for
+ * availability.
+ *
+ * @param testdir only the directory name without any path. This is used for all
+ *          service homes; the directory will be created in a temporary location
+ *          depending on the underlying OS
+ * @param trusted_ip the ip address which will be set as TRUSTED HOST in all
+ *          service configurations generated to allow control connections from
+ *          this ip. This can either be a single ip address or a network address
+ *          in CIDR notation.
+ * @param hostname the hostname of the system we are using for testing; NULL for
+ *          localhost
+ * @return handle to this system, NULL on error
+ */
+struct GNUNET_TESTING_System *
+GNUNET_TESTING_system_create (const char *testdir,
+			      const char *trusted_ip,
+			      const char *hostname);
+
+
+/**
+ * Create a system handle.  There must only be one system
+ * handle per operating system.  Use this function directly
+ * if multiple system objects are created for the same host
+ * (only really useful when testing --- or to make the port
+ * range configureable).
+ *
+ * @param testdir only the directory name without any path. This is used for
+ *          all service homes; the directory will be created in a temporary
+ *          location depending on the underlying OS
+ * @param trusted_ip the ip address which will be set as TRUSTED HOST in all
+ *          service configurations generated to allow control connections from
+ *          this ip. This can either be a single ip address or a network address
+ *          in CIDR notation.
+ * @param controller hostname of the controlling host, 
+ *        service configurations are modified to allow 
+ *        control connections from this host; can be NULL
+ * @param hostname the hostname of the system we are using for testing; NULL for
+ *          localhost
+ * @param lowport lowest port number this system is allowed to allocate (inclusive)
+ * @param highport highest port number this system is allowed to allocate (exclusive)
+ * @return handle to this system, NULL on error
+ */
+struct GNUNET_TESTING_System *
+GNUNET_TESTING_system_create_with_portrange (const char *testdir,
+					     const char *trusted_ip,
+					     const char *hostname,
+					     uint16_t lowport,
+					     uint16_t highport);
+
+
+/**
+ * Free system resources.
+ *
+ * @param system system to be freed
+ * @param remove_paths should the 'testdir' and all subdirectories
+ *        be removed (clean up on shutdown)?
+ */
+void
+GNUNET_TESTING_system_destroy (struct GNUNET_TESTING_System *system,
+			       int remove_paths);
+
+
+/**
+ * Testing includes a number of pre-created hostkeys for
+ * faster peer startup.  This function can be used to
+ * access the n-th key of those pre-created hostkeys; note
+ * that these keys are ONLY useful for testing and not
+ * secure as the private keys are part of the public 
+ * GNUnet source code.
+ *
+ * This is primarily a helper function used internally
+ * by 'GNUNET_TESTING_peer_configure'.
+ *
+ * @param system the testing system handle
+ * @param key_number desired pre-created hostkey to obtain
+ * @param id set to the peer's identity (hash of the public
+ *        key; if NULL, GNUNET_SYSERR is returned immediately
+ * @return NULL on error (not enough keys)
+ */
+struct GNUNET_CRYPTO_RsaPrivateKey *
+GNUNET_TESTING_hostkey_get (const struct GNUNET_TESTING_System *system,
+			    uint32_t key_number,
+			    struct GNUNET_PeerIdentity *id);
+
+
+/**
+ * Reserve a TCP or UDP port for a peer.
+ *
+ * @param system system to use for reservation tracking
+ * @param is_tcp GNUNET_YES for TCP ports, GNUNET_NO for UDP
+ * @return 0 if no free port was available
+ */
+uint16_t 
+GNUNET_TESTING_reserve_port (struct GNUNET_TESTING_System *system,
+			     int is_tcp);
+
+
+/**
+ * Release reservation of a TCP or UDP port for a peer
+ * (used during GNUNET_TESTING_peer_destroy).
+ *
+ * @param system system to use for reservation tracking
+ * @param is_tcp GNUNET_YES for TCP ports, GNUNET_NO for UDP
+ * @param port reserved port to release
+ */
+void
+GNUNET_TESTING_release_port (struct GNUNET_TESTING_System *system,
+			     int is_tcp,
+			     uint16_t port);
+
+
+/**
+ * Create a new configuration using the given configuration as a template;
+ * ports and paths will be modified to select available ports on the local
+ * system. The default configuration will be available in PATHS section under
+ * the option DEFAULTCONFIG after the call. SERVICE_HOME is also set in PATHS
+ * section to the temporary directory specific to this configuration. If we run
+ * out of "*port" numbers, return SYSERR.
+ *
+ * This is primarily a helper function used internally
+ * by 'GNUNET_TESTING_peer_configure'.
+ *
+ * @param system system to use to coordinate resource usage
+ * @param cfg template configuration to update
+ * @return GNUNET_OK on success, GNUNET_SYSERR on error - the configuration will
+ *           be incomplete and should not be used there upon
+ */
+int
+GNUNET_TESTING_configuration_create (struct GNUNET_TESTING_System *system,
+				     struct GNUNET_CONFIGURATION_Handle *cfg);
+// FIXME: add dual to 'release' ports again...
+
+
+/**
+ * Configure a GNUnet peer.  GNUnet must be installed on the local
+ * system and available in the PATH. 
+ *
+ * @param system system to use to coordinate resource usage
+ * @param cfg configuration to use; will be UPDATED (to reflect needed
+ *            changes in port numbers and paths)
+ * @param key_number number of the hostkey to use for the peer
+ * @param id identifier for the daemon, will be set, can be NULL
+ * @param emsg set to freshly allocated error message (set to NULL on success), 
+ *          can be NULL
+ * @return handle to the peer, NULL on error
+ */
+struct GNUNET_TESTING_Peer *
+GNUNET_TESTING_peer_configure (struct GNUNET_TESTING_System *system,
+			       struct GNUNET_CONFIGURATION_Handle *cfg,
+			       uint32_t key_number,
+			       struct GNUNET_PeerIdentity *id,
+			       char **emsg);
+
+
+/**
+ * Obtain the peer identity from a peer handle.
+ *
+ * @param peer peer handle for which we want the peer's identity
+ * @param id identifier for the daemon, will be set
+ */
+void
+GNUNET_TESTING_peer_get_identity (const struct GNUNET_TESTING_Peer *peer,
+				  struct GNUNET_PeerIdentity *id);
+
+
+/**
+ * Start the peer. 
+ *
+ * @param peer peer to start
+ * @return GNUNET_OK on success, GNUNET_SYSERR on error (i.e. peer already running)
+ */
+int
+GNUNET_TESTING_peer_start (struct GNUNET_TESTING_Peer *peer);
+
+
+/**
+ * Stop the peer. 
+ *
+ * @param peer peer to stop
+ * @return GNUNET_OK on success, GNUNET_SYSERR on error (i.e. peer not running)
+ */
+int
+GNUNET_TESTING_peer_stop (struct GNUNET_TESTING_Peer *peer);
+
+
+/**
+ * Destroy the peer.  Releases resources locked during peer configuration.
+ * If the peer is still running, it will be stopped AND a warning will be
+ * printed (users of the API should stop the peer explicitly first).
+ *
+ * @param peer peer to destroy
+ */
+void
+GNUNET_TESTING_peer_destroy (struct GNUNET_TESTING_Peer *peer);
+
+
+/**
+ * Sends SIGTERM to the peer's main process
+ *
+ * @param peer the handle to the peer
+ * @return GNUNET_OK if successful; GNUNET_SYSERR if the main process is NULL
+ *           or upon any error while sending SIGTERM
+ */
+int
+GNUNET_TESTING_peer_kill (struct GNUNET_TESTING_Peer *peer);
+
+
+/**
+ * Waits for a peer to terminate. The peer's main process will also be destroyed.
+ *
+ * @param peer the handle to the peer
+ * @return GNUNET_OK if successful; GNUNET_SYSERR if the main process is NULL
+ *           or upon any error while waiting
+ */
+int
+GNUNET_TESTING_peer_wait (struct GNUNET_TESTING_Peer *peer);
+
+
+/**
+ * Signature of the 'main' function for a (single-peer) testcase that
+ * is run using 'GNUNET_TESTING_peer_run'.
+ * 
+ * @param cls closure
+ * @param cfg configuration of the peer that was started
+ * @param peer identity of the peer that was created
+ */
+typedef void (*GNUNET_TESTING_TestMain)(void *cls,
+					const struct GNUNET_CONFIGURATION_Handle *cfg,
+					struct GNUNET_TESTING_Peer *peer);
+
+
+/**
+ * Start a single peer and run a test using the testing library.
+ * Starts a peer using the given configuration and then invokes the
+ * given callback.  This function ALSO initializes the scheduler loop
+ * and should thus be called directly from "main".  The testcase
+ * should self-terminate by invoking 'GNUNET_SCHEDULER_shutdown'.
+ *
+ * @param testdir only the directory name without any path. This is used for
+ *          all service homes; the directory will be created in a temporary
+ *          location depending on the underlying OS
+ * @param cfgfilename name of the configuration file to use;
+ *         use NULL to only run with defaults
+ * @param tm main function of the testcase
+ * @param tm_cls closure for 'tm'
+ * @return 0 on success, 1 on error
+ */
+int
+GNUNET_TESTING_peer_run (const char *testdir,
+			 const char *cfgfilename,
+			 GNUNET_TESTING_TestMain tm,
+			 void *tm_cls);
+
+
+/**
+ * Start a single service (no ARM, except of course if the given
+ * service name is 'arm') and run a test using the testing library.
+ * Starts a service using the given configuration and then invokes the
+ * given callback.  This function ALSO initializes the scheduler loop
+ * and should thus be called directly from "main".  The testcase
+ * should self-terminate by invoking 'GNUNET_SCHEDULER_shutdown'.
+ *
+ * This function is useful if the testcase is for a single service
+ * and if that service doesn't itself depend on other services.
+ *
+ * @param testdir only the directory name without any path. This is used for
+ *          all service homes; the directory will be created in a temporary
+ *          location depending on the underlying OS
+ * @param service_name name of the service to run
+ * @param cfgfilename name of the configuration file to use;
+ *         use NULL to only run with defaults
+ * @param tm main function of the testcase
+ * @param tm_cls closure for 'tm'
+ * @return 0 on success, 1 on error
+ */
+int
+GNUNET_TESTING_service_run (const char *testdir,
+			    const char *service_name,
+			    const char *cfgfilename,
+			    GNUNET_TESTING_TestMain tm,
+			    void *tm_cls);
+
+
+/**
+ * Sometimes we use the binary name to determine which specific
+ * test to run.  In those cases, the string after the last "_"
+ * in 'argv[0]' specifies a string that determines the configuration
+ * file or plugin to use.  
+ *
+ * This function returns the respective substring, taking care
+ * of issues such as binaries ending in '.exe' on W32.
+ *
+ * @param argv0 the name of the binary
+ * @return string between the last '_' and the '.exe' (or the end of the string),
+ *         NULL if argv0 has no '_' 
+ */
+char *
+GNUNET_TESTING_get_testname_from_underscore (const char *argv0);
+
+
+#if 0                           /* keep Emacsens' auto-indent happy */
+{
+#endif
+#ifdef __cplusplus
+}
+#endif
+
+#endif