GNUnet  0.11.x
Macros | Typedefs | Enumerations | Functions
Service library

Start service processes. More...

Macros

#define GNUNET_SERVICE_MAIN(service_name, service_options, init_cb, connect_cb, disconnect_cb, cls, ...)
 Creates the "main" function for a GNUnet service. More...
 

Typedefs

typedef void(* GNUNET_SERVICE_InitCallback) (void *cls, const struct GNUNET_CONFIGURATION_Handle *cfg, struct GNUNET_SERVICE_Handle *sh)
 Callback to initialize a service, called exactly once when the service is run. More...
 
typedef void *(* GNUNET_SERVICE_ConnectHandler) (void *cls, struct GNUNET_SERVICE_Client *c, struct GNUNET_MQ_Handle *mq)
 Callback to be called when a client connects to the service. More...
 
typedef void(* GNUNET_SERVICE_DisconnectHandler) (void *cls, struct GNUNET_SERVICE_Client *c, void *internal_cls)
 Callback to be called when a client disconnected from the service. More...
 

Enumerations

enum  GNUNET_SERVICE_Options {
  GNUNET_SERVICE_OPTION_NONE = 0, GNUNET_SERVICE_OPTION_MANUAL_SHUTDOWN = 1, GNUNET_SERVICE_OPTION_SOFT_SHUTDOWN = 2, GNUNET_SERVICE_OPTION_SHUTDOWN_BITMASK = 3,
  GNUNET_SERVICE_OPTION_CLOSE_LSOCKS = 4
}
 Options for the service (bitmask). More...
 

Functions

struct GNUNET_SERVICE_HandleGNUNET_SERVICE_start (const char *service_name, const struct GNUNET_CONFIGURATION_Handle *cfg, GNUNET_SERVICE_ConnectHandler connect_cb, GNUNET_SERVICE_DisconnectHandler disconnect_cb, void *cls, const struct GNUNET_MQ_MessageHandler *handlers)
 Low-level function to start a service if the scheduler is already running. More...
 
void GNUNET_SERVICE_stop (struct GNUNET_SERVICE_Handle *srv)
 Stops a service that was started with GNUNET_SERVICE_start(). More...
 
int GNUNET_SERVICE_run_ (int argc, char *const *argv, const char *service_name, enum GNUNET_SERVICE_Options options, GNUNET_SERVICE_InitCallback service_init_cb, GNUNET_SERVICE_ConnectHandler connect_cb, GNUNET_SERVICE_DisconnectHandler disconnect_cb, void *cls, const struct GNUNET_MQ_MessageHandler *handlers)
 Creates the "main" function for a GNUnet service. More...
 
void GNUNET_SERVICE_suspend (struct GNUNET_SERVICE_Handle *sh)
 Suspend accepting connections from the listen socket temporarily. More...
 
void GNUNET_SERVICE_resume (struct GNUNET_SERVICE_Handle *sh)
 Resume accepting connections from the listen socket. More...
 
void GNUNET_SERVICE_client_continue (struct GNUNET_SERVICE_Client *c)
 Continue receiving further messages from the given client. More...
 
struct GNUNET_MQ_HandleGNUNET_SERVICE_client_get_mq (struct GNUNET_SERVICE_Client *c)
 Obtain the message queue of c. More...
 
void GNUNET_SERVICE_client_disable_continue_warning (struct GNUNET_SERVICE_Client *c)
 Disable the warning the server issues if a message is not acknowledged in a timely fashion. More...
 
void GNUNET_SERVICE_client_drop (struct GNUNET_SERVICE_Client *c)
 Ask the server to disconnect from the given client. More...
 
void GNUNET_SERVICE_shutdown (struct GNUNET_SERVICE_Handle *sh)
 Explicitly stops the service. More...
 
void GNUNET_SERVICE_client_mark_monitor (struct GNUNET_SERVICE_Client *c)
 Set the 'monitor' flag on this client. More...
 
void GNUNET_SERVICE_client_persist (struct GNUNET_SERVICE_Client *c)
 Set the persist option on this client. More...
 

Detailed Description

Start service processes.

See also
Documentation

Macro Definition Documentation

◆ GNUNET_SERVICE_MAIN

#define GNUNET_SERVICE_MAIN (   service_name,
  service_options,
  init_cb,
  connect_cb,
  disconnect_cb,
  cls,
  ... 
)
Value:
main (int argc, \
char *const *argv) \
{ \
__VA_ARGS__ \
}; \
return GNUNET_SERVICE_run_ (argc, \
argv, \
service_options, \
cls, \
mh); \
}
static void * connect_cb(void *cls, struct GNUNET_CADET_Channel *channel, const struct GNUNET_PeerIdentity *initiator)
Functions of this type are called upon new cadet connection from other peers.
static void init_cb(void *cls, const struct GNUNET_CONFIGURATION_Handle *cfg, struct GNUNET_SERVICE_Handle *sh)
Service is starting, initialize everything.
static void disconnect_cb(void *cls, const struct GNUNET_CADET_Channel *channel)
Function called by cadet when a client disconnects.
static struct GNUNET_CADET_Handle * mh
Cadet handle.
Definition: gnunet-cadet.c:92
static char * service_name
Option -s: service name (hash to get service descriptor)
Definition: gnunet-vpn.c:51
Message handler for a specific message type.
int GNUNET_SERVICE_run_(int argc, char *const *argv, const char *service_name, enum GNUNET_SERVICE_Options options, GNUNET_SERVICE_InitCallback service_init_cb, GNUNET_SERVICE_ConnectHandler connect_cb, GNUNET_SERVICE_DisconnectHandler disconnect_cb, void *cls, const struct GNUNET_MQ_MessageHandler *handlers)
Creates the "main" function for a GNUnet service.
Definition: service.c:1963
int main(int argc, char *const *argv)
The main function for gnunet-gns.
Definition: gnunet-abd.c:985

Creates the "main" function for a GNUnet service.

You MUST use this macro to define GNUnet services (except for ARM, which MUST NOT use the macro). The reason is the GNUnet-as-a-library project, where we will not define a main function anywhere but in ARM.

The macro will launch the service with the name service_name using the service_options to configure its shutdown behavior. Once the service is ready, the init_cb will be called for service-specific initialization. init_cb will be given the service handler which can be used to control the service's availability. When clients connect or disconnect, the respective connect_cb or disconnect_cb functions will be called. For messages received from the clients, the respective handlers will be invoked; for the closure of the handlers we use the return value from the connect_cb invocation of the respective client.

Each handler MUST call GNUNET_SERVICE_client_continue() after each message to receive further messages from this client. If GNUNET_SERVICE_client_continue() is not called within a short time, a warning will be logged. If delays are expected, services should call GNUNET_SERVICE_client_disable_continue_warning() to disable the warning.

Clients sending invalid messages (based on handlers) will be dropped. Additionally, clients can be dropped at any time using GNUNET_SERVICE_client_drop().

Parameters
service_namename of the service to run
optionsoptions controlling shutdown of the service
service_init_cbfunction to call once the service is ready
connect_cbfunction to call whenever a client connects
disconnect_cbfunction to call whenever a client disconnects
clsclosure argument for service_init_cb, connect_cb and disconnect_cb
...array of message handlers for the service, terminated by GNUNET_MQ_handler_end(); the closure will be set to the value returned by the connect_cb for the respective connection
Returns
0 on success, non-zero on error

Sample invocation: GNUNET_SERVICE_MAIN ("resolver", GNUNET_SERVICE_OPTION_NONE, &init_cb, &connect_cb, &disconnect_cb, closure_for_cb, GNUNET_MQ_hd_var_size (get, GNUNET_MESSAGE_TYPE_RESOLVER_REQUEST, struct GNUNET_RESOLVER_GetMessage, NULL), GNUNET_MQ_handler_end ());

Definition at line 305 of file gnunet_service_lib.h.

Referenced by run().

Typedef Documentation

◆ GNUNET_SERVICE_InitCallback

typedef void(* GNUNET_SERVICE_InitCallback) (void *cls, const struct GNUNET_CONFIGURATION_Handle *cfg, struct GNUNET_SERVICE_Handle *sh)

Callback to initialize a service, called exactly once when the service is run.

Parameters
clsclosure passed to GNUNET_SERVICE_MAIN
cfgconfiguration to use for this service
shhandle to the newly create service

Definition at line 109 of file gnunet_service_lib.h.

◆ GNUNET_SERVICE_ConnectHandler

typedef void*(* GNUNET_SERVICE_ConnectHandler) (void *cls, struct GNUNET_SERVICE_Client *c, struct GNUNET_MQ_Handle *mq)

Callback to be called when a client connects to the service.

Parameters
clsclosure for the service
cthe new client that connected to the service
mqthe message queue used to send messages to the client
Returns
the client-specific (`internal') closure

Definition at line 123 of file gnunet_service_lib.h.

◆ GNUNET_SERVICE_DisconnectHandler

typedef void(* GNUNET_SERVICE_DisconnectHandler) (void *cls, struct GNUNET_SERVICE_Client *c, void *internal_cls)

Callback to be called when a client disconnected from the service.

Parameters
clsclosure for the service
cthe client that disconnected
internal_clsthe client-specific (`internal') closure

Definition at line 136 of file gnunet_service_lib.h.

Enumeration Type Documentation

◆ GNUNET_SERVICE_Options

Options for the service (bitmask).

Enumerator
GNUNET_SERVICE_OPTION_NONE 

Use defaults.

Terminates all client connections and the listen sockets immediately upon receiving the shutdown signal.

GNUNET_SERVICE_OPTION_MANUAL_SHUTDOWN 

Do not trigger server shutdown on signal at all; instead, allow for the user to terminate the server explicitly when needed by calling GNUNET_SERVICE_shutdown().

GNUNET_SERVICE_OPTION_SOFT_SHUTDOWN 

Trigger a SOFT server shutdown on signals, allowing active non-monitor clients to complete their transactions.

GNUNET_SERVICE_OPTION_SHUTDOWN_BITMASK 

Bitmask over the shutdown options.

GNUNET_SERVICE_OPTION_CLOSE_LSOCKS 

Instead of listening on lsocks passed by the parent, close them after opening our own listen socket(s).

Definition at line 53 of file gnunet_service_lib.h.

54 {
60 
67 
73 
78 
84 };
Bitmask over the shutdown options.
Do not trigger server shutdown on signal at all; instead, allow for the user to terminate the server ...
Trigger a SOFT server shutdown on signals, allowing active non-monitor clients to complete their tran...
Instead of listening on lsocks passed by the parent, close them after opening our own listen socket(s...

Function Documentation

◆ GNUNET_SERVICE_start()

struct GNUNET_SERVICE_Handle* GNUNET_SERVICE_start ( const char *  service_name,
const struct GNUNET_CONFIGURATION_Handle cfg,
GNUNET_SERVICE_ConnectHandler  connect_cb,
GNUNET_SERVICE_DisconnectHandler  disconnect_cb,
void *  cls,
const struct GNUNET_MQ_MessageHandler handlers 
)

Low-level function to start a service if the scheduler is already running.

Should only be used directly in special cases.

The function will launch the service with the name service_name using the service_options to configure its shutdown behavior. When clients connect or disconnect, the respective connect_cb or disconnect_cb functions will be called. For messages received from the clients, the respective handlers will be invoked; for the closure of the handlers we use the return value from the connect_cb invocation of the respective client.

Each handler MUST call GNUNET_SERVICE_client_continue() after each message to receive further messages from this client. If GNUNET_SERVICE_client_continue() is not called within a short time, a warning will be logged. If delays are expected, services should call GNUNET_SERVICE_client_disable_continue_warning() to disable the warning.

Clients sending invalid messages (based on handlers) will be dropped. Additionally, clients can be dropped at any time using GNUNET_SERVICE_client_drop().

The service must be stopped using GNUNET_SERVICE_stop().

Parameters
service_namename of the service to run
cfgconfiguration to use
connect_cbfunction to call whenever a client connects
disconnect_cbfunction to call whenever a client disconnects
clsclosure argument for connect_cb and disconnect_cb
handlersNULL-terminated array of message handlers for the service, the closure will be set to the value returned by the connect_cb for the respective connection
Returns
NULL on error

Definition at line 1875 of file service.c.

References GNUNET_SERVICE_Handle::cb_cls, cfg, GNUNET_SERVICE_Handle::cfg, GNUNET_SERVICE_Handle::connect_cb, connect_cb(), GNUNET_SERVICE_Handle::disconnect_cb, disconnect_cb(), do_resume(), GNUNET_free, GNUNET_MQ_copy_handlers2(), GNUNET_new, GNUNET_OK, GNUNET_SERVICE_Handle::handlers, return_agpl(), service_name, GNUNET_SERVICE_Handle::service_name, setup_service(), ServiceListenContext::sh, and SUSPEND_STATE_NONE.

Referenced by GST_barriers_init(), and transport_communicator_start().

1881 {
1882  struct GNUNET_SERVICE_Handle *sh;
1883 
1884  sh = GNUNET_new (struct GNUNET_SERVICE_Handle);
1885  sh->service_name = service_name;
1886  sh->cfg = cfg;
1887  sh->connect_cb = connect_cb;
1889  sh->cb_cls = cls;
1890  sh->handlers = GNUNET_MQ_copy_handlers2 (handlers, &return_agpl, NULL);
1891  if (GNUNET_OK != setup_service (sh))
1892  {
1893  GNUNET_free (sh->handlers);
1894  GNUNET_free (sh);
1895  return NULL;
1896  }
1898  return sh;
1899 }
static void * connect_cb(void *cls, struct GNUNET_CADET_Channel *channel, const struct GNUNET_PeerIdentity *initiator)
Functions of this type are called upon new cadet connection from other peers.
static void return_agpl(void *cls, const struct GNUNET_MessageHeader *msg)
Function to return link to AGPL source upon request.
Definition: service.c:1819
struct GNUNET_MQ_MessageHandler * handlers
Message handlers to use for all clients.
Definition: service.c:171
static const struct GNUNET_CONFIGURATION_Handle * cfg
Configuration we are using.
Definition: gnunet-abd.c:36
Handle to a service.
Definition: service.c:116
static int setup_service(struct GNUNET_SERVICE_Handle *sh)
Setup service handle.
Definition: service.c:1456
static void disconnect_cb(void *cls, const struct GNUNET_CADET_Channel *channel)
Function called by cadet when a client disconnects.
#define GNUNET_new(type)
Allocate a struct or union of the given type.
We are running normally.
Definition: service.c:89
static struct SolverHandle * sh
static char * service_name
Option -s: service name (hash to get service descriptor)
Definition: gnunet-vpn.c:51
GNUNET_SERVICE_ConnectHandler connect_cb
Function to call when clients connect.
Definition: service.c:136
struct GNUNET_MQ_MessageHandler * GNUNET_MQ_copy_handlers2(const struct GNUNET_MQ_MessageHandler *handlers, GNUNET_MQ_MessageCallback agpl_handler, void *agpl_cls)
Copy an array of handlers, appending AGPL handler.
Definition: mq.c:1257
static void do_resume(struct GNUNET_SERVICE_Handle *sh, enum SuspendReason sr)
Resume accepting connections from the listen socket.
Definition: service.c:868
const char * service_name
Name of our service.
Definition: service.c:126
const struct GNUNET_CONFIGURATION_Handle * cfg
Our configuration.
Definition: service.c:121
GNUNET_SERVICE_DisconnectHandler disconnect_cb
Function to call when clients disconnect / are disconnected.
Definition: service.c:141
void * cb_cls
Closure for service_init_cb, connect_cb, disconnect_cb.
Definition: service.c:146
#define GNUNET_free(ptr)
Wrapper around free.
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◆ GNUNET_SERVICE_stop()

void GNUNET_SERVICE_stop ( struct GNUNET_SERVICE_Handle srv)

Stops a service that was started with GNUNET_SERVICE_start().

Parameters
srvservice to stop

Definition at line 1908 of file service.c.

References GNUNET_SERVICE_Handle::clients_head, GNUNET_free, GNUNET_SERVICE_client_drop(), GNUNET_SERVICE_suspend(), GNUNET_SERVICE_Handle::handlers, and teardown_service().

Referenced by GST_barriers_destroy(), and shutdown_service().

1909 {
1910  struct GNUNET_SERVICE_Client *client;
1911 
1912  GNUNET_SERVICE_suspend (srv);
1913  while (NULL != (client = srv->clients_head))
1914  GNUNET_SERVICE_client_drop (client);
1915  teardown_service (srv);
1916  GNUNET_free (srv->handlers);
1917  GNUNET_free (srv);
1918 }
struct GNUNET_MQ_MessageHandler * handlers
Message handlers to use for all clients.
Definition: service.c:171
struct GNUNET_SERVICE_Client * clients_head
Our clients, kept in a DLL.
Definition: service.c:161
Handle to a client that is connected to a service.
Definition: service.c:250
static void teardown_service(struct GNUNET_SERVICE_Handle *sh)
Tear down the service, closing the listen sockets and freeing the ACLs.
Definition: service.c:1792
void GNUNET_SERVICE_client_drop(struct GNUNET_SERVICE_Client *c)
Ask the server to disconnect from the given client.
Definition: service.c:2323
void GNUNET_SERVICE_suspend(struct GNUNET_SERVICE_Handle *sh)
Suspend accepting connections from the listen socket temporarily.
Definition: service.c:2181
#define GNUNET_free(ptr)
Wrapper around free.
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◆ GNUNET_SERVICE_run_()

int GNUNET_SERVICE_run_ ( int  argc,
char *const *  argv,
const char *  service_name,
enum GNUNET_SERVICE_Options  options,
GNUNET_SERVICE_InitCallback  service_init_cb,
GNUNET_SERVICE_ConnectHandler  connect_cb,
GNUNET_SERVICE_DisconnectHandler  disconnect_cb,
void *  cls,
const struct GNUNET_MQ_MessageHandler handlers 
)

Creates the "main" function for a GNUnet service.

You should almost always use the GNUNET_SERVICE_MAIN macro instead of calling this function directly (except for ARM, which should call this function directly).

The function will launch the service with the name service_name using the service_options to configure its shutdown behavior. Once the service is ready, the init_cb will be called for service-specific initialization. init_cb will be given the service handler which can be used to control the service's availability. When clients connect or disconnect, the respective connect_cb or disconnect_cb functions will be called. For messages received from the clients, the respective handlers will be invoked; for the closure of the handlers we use the return value from the connect_cb invocation of the respective client.

Each handler MUST call GNUNET_SERVICE_client_continue() after each message to receive further messages from this client. If GNUNET_SERVICE_client_continue() is not called within a short time, a warning will be logged. If delays are expected, services should call GNUNET_SERVICE_client_disable_continue_warning() to disable the warning.

Clients sending invalid messages (based on handlers) will be dropped. Additionally, clients can be dropped at any time using GNUNET_SERVICE_client_drop().

Parameters
argcnumber of command-line arguments in argv
argvarray of command-line arguments
service_namename of the service to run
optionsoptions controlling shutdown of the service
service_init_cbfunction to call once the service is ready
connect_cbfunction to call whenever a client connects
disconnect_cbfunction to call whenever a client disconnects
clsclosure argument for service_init_cb, connect_cb and disconnect_cb
handlersNULL-terminated array of message handlers for the service, the closure will be set to the value returned by the connect_cb for the respective connection
Returns
0 on success, non-zero on error

Definition at line 1963 of file service.c.

References _, GNUNET_OS_ProjectData::agpl_url, bindtextdomain, GNUNET_SERVICE_Handle::cb_cls, cfg, GNUNET_SERVICE_Handle::cfg, cfg_filename, GNUNET_OS_ProjectData::config_file, GNUNET_SERVICE_Handle::connect_cb, connect_cb(), detach_terminal(), DIR_SEPARATOR_STR, GNUNET_SERVICE_Handle::disconnect_cb, disconnect_cb(), GAUGER, getenv(), GNUNET_OS_ProjectData::gettext_domain, gettext_noop, GNUNET_OS_ProjectData::gettext_path, GNUNET_asprintf(), GNUNET_break, GNUNET_CONFIGURATION_create(), GNUNET_CONFIGURATION_destroy(), GNUNET_CONFIGURATION_get_value_number(), GNUNET_CONFIGURATION_get_value_string(), GNUNET_CONFIGURATION_have_value(), GNUNET_CONFIGURATION_load(), GNUNET_DISK_file_test(), GNUNET_ERROR_TYPE_DEBUG, GNUNET_ERROR_TYPE_ERROR, GNUNET_ERROR_TYPE_WARNING, GNUNET_free, GNUNET_GETOPT_option_cfgfile(), GNUNET_GETOPT_OPTION_END, GNUNET_GETOPT_option_flag(), GNUNET_GETOPT_option_help(), GNUNET_GETOPT_option_logfile(), GNUNET_GETOPT_option_loglevel(), GNUNET_GETOPT_option_version(), GNUNET_GETOPT_run(), GNUNET_log, GNUNET_log_setup(), GNUNET_MQ_copy_handlers(), GNUNET_MQ_copy_handlers2(), GNUNET_NO, GNUNET_OK, GNUNET_OS_installation_get_path(), GNUNET_OS_IPK_LOCALEDIR, GNUNET_OS_project_data_get(), GNUNET_RESOLVER_connect(), GNUNET_SCHEDULER_run(), GNUNET_SPEEDUP_stop_(), GNUNET_strdup, GNUNET_SYSERR, GNUNET_TIME_set_offset(), GNUNET_YES, GNUNET_SERVICE_Handle::handlers, LOG, LOG_STRERROR, options, GNUNET_SERVICE_Handle::options, pid_file_delete(), GNUNET_SERVICE_Handle::ready_confirm_fd, ret, GNUNET_SERVICE_Handle::ret, return_agpl(), GNUNET_SERVICE_Handle::service_init_cb, service_main(), service_name, GNUNET_SERVICE_Handle::service_name, set_user_id(), setup_service(), teardown_service(), textdomain, GNUNET_OS_ProjectData::user_config_file, and GNUNET_OS_ProjectData::version.

Referenced by main().

1972 {
1973  struct GNUNET_SERVICE_Handle sh;
1974 
1975 #if ENABLE_NLS
1976  char *path;
1977 #endif
1978  char *cfg_filename;
1979  char *opt_cfg_filename;
1980  char *loglev;
1981  const char *xdg;
1982  char *logfile;
1983  int do_daemonize;
1984  unsigned long long skew_offset;
1985  unsigned long long skew_variance;
1986  long long clock_offset;
1988  int ret;
1989  int err;
1990  const struct GNUNET_OS_ProjectData *pd = GNUNET_OS_project_data_get ();
1991  struct GNUNET_GETOPT_CommandLineOption service_options[] = {
1992  GNUNET_GETOPT_option_cfgfile (&opt_cfg_filename),
1994  "daemonize",
1995  gettext_noop (
1996  "do daemonize (detach from terminal)"),
1997  &do_daemonize),
2000  GNUNET_GETOPT_option_logfile (&logfile),
2003  };
2004 
2005  err = 1;
2006  memset (&sh, 0, sizeof(sh));
2007  xdg = getenv ("XDG_CONFIG_HOME");
2008  if (NULL != xdg)
2009  GNUNET_asprintf (&cfg_filename,
2010  "%s%s%s",
2011  xdg,
2013  pd->config_file);
2014  else
2015  cfg_filename = GNUNET_strdup (pd->user_config_file);
2016  sh.ready_confirm_fd = -1;
2017  sh.options = options;
2018  sh.cfg = cfg = GNUNET_CONFIGURATION_create ();
2019  sh.service_init_cb = service_init_cb;
2020  sh.connect_cb = connect_cb;
2021  sh.disconnect_cb = disconnect_cb;
2022  sh.cb_cls = cls;
2023  sh.handlers = (NULL == pd->agpl_url)
2024  ? GNUNET_MQ_copy_handlers (handlers)
2025  : GNUNET_MQ_copy_handlers2 (handlers, &return_agpl, NULL);
2026  sh.service_name = service_name;
2027  sh.ret = 0;
2028  /* setup subsystems */
2029  loglev = NULL;
2030  logfile = NULL;
2031  opt_cfg_filename = NULL;
2032  do_daemonize = 0;
2033 #if ENABLE_NLS
2034  if (NULL != pd->gettext_domain)
2035  {
2036  setlocale (LC_ALL, "");
2037  path = (NULL == pd->gettext_path) ?
2040  if (NULL != path)
2041  {
2042  bindtextdomain (pd->gettext_domain, path);
2043  GNUNET_free (path);
2044  }
2045  textdomain (pd->gettext_domain);
2046  }
2047 #endif
2049  service_options,
2050  argc,
2051  argv);
2052  if (GNUNET_SYSERR == ret)
2053  goto shutdown;
2054  if (GNUNET_NO == ret)
2055  {
2056  err = 0;
2057  goto shutdown;
2058  }
2060  loglev,
2061  logfile))
2062  {
2063  GNUNET_break (0);
2064  goto shutdown;
2065  }
2066  if (NULL != opt_cfg_filename)
2067  {
2068  if ((GNUNET_YES != GNUNET_DISK_file_test (opt_cfg_filename)) ||
2069  (GNUNET_SYSERR == GNUNET_CONFIGURATION_load (cfg, opt_cfg_filename)))
2070  {
2072  _ ("Malformed configuration file `%s', exit ...\n"),
2073  opt_cfg_filename);
2074  goto shutdown;
2075  }
2076  }
2077  else
2078  {
2079  if (GNUNET_YES == GNUNET_DISK_file_test (cfg_filename))
2080  {
2081  if (GNUNET_SYSERR == GNUNET_CONFIGURATION_load (cfg, cfg_filename))
2082  {
2084  _ ("Malformed configuration file `%s', exit ...\n"),
2085  cfg_filename);
2086  goto shutdown;
2087  }
2088  }
2089  else
2090  {
2091  if (GNUNET_SYSERR == GNUNET_CONFIGURATION_load (cfg, NULL))
2092  {
2094  _ ("Malformed configuration, exit ...\n"));
2095  goto shutdown;
2096  }
2097  }
2098  }
2099  if (GNUNET_OK != setup_service (&sh))
2100  goto shutdown;
2101  if ((1 == do_daemonize) && (GNUNET_OK != detach_terminal (&sh)))
2102  {
2103  GNUNET_break (0);
2104  goto shutdown;
2105  }
2106  if (GNUNET_OK != set_user_id (&sh))
2107  goto shutdown;
2109  "Service `%s' runs with configuration from `%s'\n",
2110  service_name,
2111  (NULL != opt_cfg_filename) ? opt_cfg_filename : cfg_filename);
2113  "TESTING",
2114  "SKEW_OFFSET",
2115  &skew_offset)) &&
2117  "TESTING",
2118  "SKEW_VARIANCE",
2119  &skew_variance)))
2120  {
2121  clock_offset = skew_offset - skew_variance;
2122  GNUNET_TIME_set_offset (clock_offset);
2123  LOG (GNUNET_ERROR_TYPE_DEBUG, "Skewing clock by %dll ms\n", clock_offset);
2124  }
2126 
2127  /* actually run service */
2128  err = 0;
2130  /* shutdown */
2131  if (1 == do_daemonize)
2132  pid_file_delete (&sh);
2133 
2134 shutdown:
2135  if (-1 != sh.ready_confirm_fd)
2136  {
2137  if (1 != write (sh.ready_confirm_fd, err ? "I" : "S", 1))
2139  GNUNET_break (0 == close (sh.ready_confirm_fd));
2140  }
2141 #if HAVE_MALLINFO
2142  {
2143  char *counter;
2144 
2146  service_name,
2147  "GAUGER_HEAP")) &&
2149  service_name,
2150  "GAUGER_HEAP",
2151  &counter)))
2152  {
2153  struct mallinfo mi;
2154 
2155  mi = mallinfo ();
2156  GAUGER (service_name, counter, mi.usmblks, "blocks");
2157  GNUNET_free (counter);
2158  }
2159  }
2160 #endif
2161  teardown_service (&sh);
2162  GNUNET_free (sh.handlers);
2165  GNUNET_free (logfile);
2166  GNUNET_free (loglev);
2167  GNUNET_free (cfg_filename);
2168  GNUNET_free (opt_cfg_filename);
2169 
2170  return err ? GNUNET_SYSERR : sh.ret;
2171 }
static void * connect_cb(void *cls, struct GNUNET_CADET_Channel *channel, const struct GNUNET_PeerIdentity *initiator)
Functions of this type are called upon new cadet connection from other peers.
static void return_agpl(void *cls, const struct GNUNET_MessageHeader *msg)
Function to return link to AGPL source upon request.
Definition: service.c:1819
int GNUNET_DISK_file_test(const char *fil)
Check that fil corresponds to a filename (of a file that exists and that is not a directory)...
Definition: disk.c:544
static char * cfg_filename
Name of the configuration file.
Return the directory where translations are installed (share/locale/)
const char * config_file
Configuration file name (in $XDG_CONFIG_HOME) to use.
char * gettext_domain
Gettext domain for localisation, e.g.
Project-specific data used to help the OS subsystem find installation paths.
int GNUNET_CONFIGURATION_get_value_number(const struct GNUNET_CONFIGURATION_Handle *cfg, const char *section, const char *option, unsigned long long *number)
Get a configuration value that should be a number.
static const struct GNUNET_CONFIGURATION_Handle * cfg
Configuration we are using.
Definition: gnunet-abd.c:36
char * gettext_path
Gettext directory, e.g.
struct GNUNET_GETOPT_CommandLineOption options[]
Definition: 002.c:5
Handle to a service.
Definition: service.c:116
struct GNUNET_GETOPT_CommandLineOption GNUNET_GETOPT_option_help(const char *about)
Defining the option to print the command line help text (-h option).
static int setup_service(struct GNUNET_SERVICE_Handle *sh)
Setup service handle.
Definition: service.c:1456
static void disconnect_cb(void *cls, const struct GNUNET_CADET_Channel *channel)
Function called by cadet when a client disconnects.
struct GNUNET_MQ_MessageHandler * GNUNET_MQ_copy_handlers(const struct GNUNET_MQ_MessageHandler *handlers)
Copy an array of handlers.
Definition: mq.c:1227
static int ret
Return value of the commandline.
Definition: gnunet-abd.c:81
void GNUNET_SCHEDULER_run(GNUNET_SCHEDULER_TaskCallback task, void *task_cls)
Initialize and run scheduler.
Definition: scheduler.c:720
const char * user_config_file
Configuration file name to use (if $XDG_CONFIG_HOME is not set).
#define bindtextdomain(Domainname, Dirname)
Definition: gettext.h:57
Definition of a command line option.
static void service_main(void *cls)
First task run by any service.
Definition: service.c:896
struct GNUNET_CONFIGURATION_Handle * GNUNET_CONFIGURATION_create(void)
Create a new configuration object.
void GNUNET_TIME_set_offset(long long offset)
Set the timestamp offset for this instance.
Definition: time.c:53
#define GNUNET_strdup(a)
Wrapper around GNUNET_xstrdup_.
struct GNUNET_GETOPT_CommandLineOption GNUNET_GETOPT_option_logfile(char **logfn)
Allow user to specify log file name (-l option)
#define GNUNET_break(cond)
Use this for internal assertion violations that are not fatal (can be handled) but should not occur...
static void pid_file_delete(struct GNUNET_SERVICE_Handle *sh)
Delete the PID file that was created by our parent.
Definition: service.c:1693
struct GNUNET_GETOPT_CommandLineOption GNUNET_GETOPT_OPTION_END
Definition: 002.c:13
static int set_user_id(struct GNUNET_SERVICE_Handle *sh)
Set user ID.
Definition: service.c:1623
int GNUNET_CONFIGURATION_load(struct GNUNET_CONFIGURATION_Handle *cfg, const char *filename)
Load configuration.
#define _(String)
GNU gettext support macro.
Definition: platform.h:184
const char * version
String identifying the current project version.
#define textdomain(Domainname)
Definition: gettext.h:56
struct GNUNET_GETOPT_CommandLineOption GNUNET_GETOPT_option_version(const char *version)
Define the option to print the version of the application (-v option)
int GNUNET_asprintf(char **buf, const char *format,...)
Like asprintf, just portable.
char * agpl_url
URL pointing to the source code of the application.
#define DIR_SEPARATOR_STR
Definition: platform.h:171
int GNUNET_CONFIGURATION_have_value(const struct GNUNET_CONFIGURATION_Handle *cfg, const char *section, const char *option)
Test if we have a value for a particular option.
static struct SolverHandle * sh
char * GNUNET_OS_installation_get_path(enum GNUNET_OS_InstallationPathKind dirkind)
Get the path to a specific GNUnet installation directory or, with GNUNET_OS_IPK_SELF_PREFIX, the current running apps installation directory.
static char * service_name
Option -s: service name (hash to get service descriptor)
Definition: gnunet-vpn.c:51
static void teardown_service(struct GNUNET_SERVICE_Handle *sh)
Tear down the service, closing the listen sockets and freeing the ACLs.
Definition: service.c:1792
void GNUNET_CONFIGURATION_destroy(struct GNUNET_CONFIGURATION_Handle *cfg)
Destroy configuration object.
struct GNUNET_GETOPT_CommandLineOption GNUNET_GETOPT_option_loglevel(char **level)
Define the '-L' log level option.
struct GNUNET_MQ_MessageHandler * GNUNET_MQ_copy_handlers2(const struct GNUNET_MQ_MessageHandler *handlers, GNUNET_MQ_MessageCallback agpl_handler, void *agpl_cls)
Copy an array of handlers, appending AGPL handler.
Definition: mq.c:1257
int GNUNET_CONFIGURATION_get_value_string(const struct GNUNET_CONFIGURATION_Handle *cfg, const char *section, const char *option, char **value)
Get a configuration value that should be a string.
int GNUNET_GETOPT_run(const char *binaryOptions, const struct GNUNET_GETOPT_CommandLineOption *allOptions, unsigned int argc, char *const *argv)
Parse the command line.
Definition: getopt.c:892
char * getenv()
#define GAUGER(category, counter, value, unit)
Definition: gauger.h:18
struct GNUNET_GETOPT_CommandLineOption GNUNET_GETOPT_option_cfgfile(char **fn)
Allow user to specify configuration file name (-c option)
#define LOG(kind,...)
Definition: service.c:40
configuration data
Definition: configuration.c:84
struct GNUNET_GETOPT_CommandLineOption GNUNET_GETOPT_option_flag(char shortName, const char *name, const char *description, int *val)
Allow user to specify a flag (which internally means setting an integer to 1/GNUNET_YES/GNUNET_OK.
#define GNUNET_log(kind,...)
const struct GNUNET_OS_ProjectData * GNUNET_OS_project_data_get(void)
int GNUNET_log_setup(const char *comp, const char *loglevel, const char *logfile)
Setup logging.
#define LOG_STRERROR(kind, syscall)
Definition: service.c:42
static int detach_terminal(struct GNUNET_SERVICE_Handle *sh)
Detach from terminal.
Definition: service.c:1712
void GNUNET_RESOLVER_connect(const struct GNUNET_CONFIGURATION_Handle *cfg)
Create the connection to the resolver service.
Definition: resolver_api.c:257
#define GNUNET_free(ptr)
Wrapper around free.
#define gettext_noop(String)
Definition: gettext.h:69
void GNUNET_SPEEDUP_stop_()
Stop tasks that modify clock behavior.
Definition: speedup.c:105
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◆ GNUNET_SERVICE_suspend()

void GNUNET_SERVICE_suspend ( struct GNUNET_SERVICE_Handle sh)

Suspend accepting connections from the listen socket temporarily.

Resume activity using GNUNET_SERVICE_resume.

Parameters
shservice to stop accepting connections.

Definition at line 2181 of file service.c.

References do_suspend(), and SUSPEND_STATE_APP.

Referenced by GNUNET_SERVICE_stop(), and run().

2182 {
2184 }
static void do_suspend(struct GNUNET_SERVICE_Handle *sh, enum SuspendReason sr)
Suspend accepting connections from the listen socket temporarily.
Definition: service.c:382
Application requested it.
Definition: service.c:94
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◆ GNUNET_SERVICE_resume()

void GNUNET_SERVICE_resume ( struct GNUNET_SERVICE_Handle sh)

Resume accepting connections from the listen socket.

Parameters
shservice to resume accepting connections.

Definition at line 2193 of file service.c.

References do_resume(), and SUSPEND_STATE_APP.

Referenced by begin_service(), core_init(), and run().

2194 {
2196 }
static void do_resume(struct GNUNET_SERVICE_Handle *sh, enum SuspendReason sr)
Resume accepting connections from the listen socket.
Definition: service.c:868
Application requested it.
Definition: service.c:94
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◆ GNUNET_SERVICE_client_continue()

void GNUNET_SERVICE_client_continue ( struct GNUNET_SERVICE_Client c)

Continue receiving further messages from the given client.

Must be called after each message received.

Parameters
cthe client to continue receiving from

Definition at line 2242 of file service.c.

References GNUNET_SERVICE_Client::drop_task, GNUNET_assert, GNUNET_NO, GNUNET_SCHEDULER_add_now(), GNUNET_SCHEDULER_cancel(), GNUNET_YES, GNUNET_SERVICE_Client::needs_continue, GNUNET_SERVICE_Client::recv_task, resume_client_receive(), and GNUNET_SERVICE_Client::warn_task.

Referenced by conclude_autoconfig_request(), continue_store_activity(), do_blacklist_check(), finish_cmc_handling(), handle_add_address(), handle_add_host(), handle_add_queue_message(), handle_address_add(), handle_address_destroyed(), handle_address_update(), handle_alice_client_message(), handle_alice_client_message_multipart(), handle_announce(), handle_ats_start(), handle_attestation_delete_message(), handle_attestation_iteration_next(), handle_attestation_iteration_start(), handle_attestation_iteration_stop(), handle_attestation_store_message(), handle_attribute_delete_message(), handle_attribute_store_message(), handle_barrier_cancel(), handle_barrier_init(), handle_barrier_status(), handle_barrier_wait(), handle_block_cache(), handle_bob_client_message(), handle_bob_client_message_multipart(), handle_channel_create(), handle_channel_destroy(), handle_client_accept(), handle_client_audio_message(), handle_client_blacklist_reply(), handle_client_call_message(), handle_client_cancel(), handle_client_conclude(), handle_client_copy_lazy_connect(), handle_client_copy_lazy_prepare(), handle_client_create_set(), handle_client_decrypt(), handle_client_evaluate(), handle_client_hangup_message(), handle_client_hello(), handle_client_index_list_get(), handle_client_init(), handle_client_insert(), handle_client_iter_ack(), handle_client_iterate(), handle_client_join(), handle_client_keygen(), handle_client_listen(), handle_client_loc_sign(), handle_client_monitor_peers(), handle_client_mutation(), handle_client_pickup_message(), handle_client_recv_ok(), handle_client_redirect_to_ip(), handle_client_redirect_to_service(), handle_client_register_message(), handle_client_reject(), handle_client_response(), handle_client_resume_message(), handle_client_seed(), handle_client_send(), handle_client_send_request(), handle_client_set_metric(), handle_client_start(), handle_client_start_search(), handle_client_start_sub(), handle_client_stop_sub(), handle_client_stream_cancel(), handle_client_stream_request(), handle_client_suspend_message(), handle_client_unindex(), handle_client_view_cancel(), handle_client_view_request(), handle_collect(), handle_communicator_available(), handle_communicator_backchannel(), handle_consume_ticket_message(), handle_create(), handle_create_message(), handle_del_address(), handle_del_queue_message(), handle_delete_message(), handle_dht_local_get(), handle_dht_local_get_stop(), handle_dht_local_monitor(), handle_dht_local_monitor_stop(), handle_dht_local_put(), handle_disconnect(), handle_drop(), handle_drop_message(), handle_feedback(), handle_get(), handle_get_all(), handle_get_default_message(), handle_get_key(), handle_get_peers(), handle_get_replication(), handle_get_zero_anonymity(), handle_hello(), handle_incoming_msg(), handle_info_tunnels(), handle_init(), handle_issue_ticket_message(), handle_iteration_next(), handle_iteration_start(), handle_iteration_stop(), handle_link_controllers(), handle_list(), handle_local_ack(), handle_local_data(), handle_log_msg(), handle_lookup(), handle_lookup_block(), handle_lookup_by_suffix_message(), handle_lookup_message(), handle_manage_peer_service(), handle_monitor(), handle_monitor_next(), handle_monitor_start(), handle_notify(), handle_overlay_connect(), handle_peer_create(), handle_peer_destroy(), handle_peer_get_config(), handle_peer_reconfigure(), handle_peer_start(), handle_peer_stop(), handle_port_close(), handle_port_open(), handle_preference_change(), handle_put(), handle_query_message(), handle_queue_create_fail(), handle_queue_create_ok(), handle_record_lookup(), handle_record_store(), handle_register(), handle_release_reserve(), handle_remote_overlay_connect(), handle_remove(), handle_rename_message(), handle_request_address(), handle_request_address_cancel(), handle_request_address_list(), handle_request_connection_reversal(), handle_request_hello_validation(), handle_reservation_request(), handle_reserve(), handle_revoke_message(), handle_revoke_ticket_message(), handle_search(), handle_send_message_ack(), handle_set(), handle_set_default_message(), handle_show_path(), handle_shutdown_peers(), handle_slave_get_config(), handle_start(), handle_start_message(), handle_stop(), handle_stun(), handle_suggest(), handle_suggest_cancel(), handle_test(), handle_ticket_iteration_next(), handle_ticket_iteration_start(), handle_ticket_iteration_stop(), handle_update_queue_message(), handle_verify(), handle_watch(), handle_watch_cancel(), handle_zone_to_name(), hash_for_index_val(), record_iterator(), return_agpl(), send_push(), service_mq_error_handler(), signal_index_ok(), slave_status_cb(), start_p2p_processing(), store_record_continuation(), and zone_iteration_done_client_continue().

2243 {
2244  GNUNET_assert (NULL == c->drop_task);
2246  GNUNET_assert (NULL == c->recv_task);
2248  if (NULL != c->warn_task)
2249  {
2251  c->warn_task = NULL;
2252  }
2254 }
static void resume_client_receive(void *cls)
Task run to resume receiving data from the client after the client called GNUNET_SERVICE_client_conti...
Definition: service.c:2206
#define GNUNET_assert(cond)
Use this for fatal errors that cannot be handled.
struct GNUNET_SCHEDULER_Task * warn_task
Task that warns about missing calls to GNUNET_SERVICE_client_continue().
Definition: service.c:286
struct GNUNET_SCHEDULER_Task * GNUNET_SCHEDULER_add_now(GNUNET_SCHEDULER_TaskCallback task, void *task_cls)
Schedule a new task to be run as soon as possible.
Definition: scheduler.c:1296
int needs_continue
Are we waiting for the application to call GNUNET_SERVICE_client_continue()?
Definition: service.c:344
struct GNUNET_SCHEDULER_Task * recv_task
Task that receives data from the client to pass it to the handlers.
Definition: service.c:298
struct GNUNET_SCHEDULER_Task * drop_task
Task run to finish dropping the client after the stack has properly unwound.
Definition: service.c:292
void * GNUNET_SCHEDULER_cancel(struct GNUNET_SCHEDULER_Task *task)
Cancel the task with the specified identifier.
Definition: scheduler.c:972
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◆ GNUNET_SERVICE_client_get_mq()

struct GNUNET_MQ_Handle* GNUNET_SERVICE_client_get_mq ( struct GNUNET_SERVICE_Client c)

Obtain the message queue of c.

Convenience function.

Parameters
cthe client to continue receiving from
Returns
the message queue of c

Definition at line 2436 of file service.c.

References GNUNET_SERVICE_Client::mq.

Referenced by add_to_tc(), broadcast_status(), GAS_handle_address_destroyed(), GAS_handle_reservation_request(), GAS_performance_add_client(), GAS_scheduling_transmit_address_suggestion(), GST_forwarded_operation_reply_relay(), GST_send_operation_fail_msg(), GST_send_operation_success_msg(), handle_add_host(), handle_barrier_status(), handle_get(), handle_get_all(), handle_get_default_message(), handle_list(), handle_lookup_by_suffix_message(), handle_lookup_message(), handle_monitor(), handle_notify(), handle_peer_create(), handle_peer_get_config(), handle_peer_start(), handle_peer_stop(), handle_query_message(), handle_revoke_message(), handle_slave_get_config(), handle_start(), handle_start_message(), handle_test(), notify_client(), record_iterator(), return_agpl(), send_client_reply(), send_client_status_msg(), send_controller_link_response(), send_end_msg(), send_intermediate_response(), send_lookup_response(), send_overlay_connect_success_msg(), send_reply(), send_result_code(), signal_result(), transmit_item(), transmit_req_addr(), transmit_status(), and watch_notifier_it().

2437 {
2438  return c->mq;
2439 }
struct GNUNET_MQ_Handle * mq
Message queue for the client.
Definition: service.c:275
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◆ GNUNET_SERVICE_client_disable_continue_warning()

void GNUNET_SERVICE_client_disable_continue_warning ( struct GNUNET_SERVICE_Client c)

Disable the warning the server issues if a message is not acknowledged in a timely fashion.

Use this call if a client is intentionally delayed for a while. Only applies to the current message.

Parameters
cclient for which to disable the warning

Definition at line 2266 of file service.c.

References GNUNET_break, GNUNET_SCHEDULER_cancel(), and GNUNET_SERVICE_Client::warn_task.

Referenced by handle_client_address_to_string(), handle_client_monitor_peers(), handle_client_monitor_plugins(), and handle_start_message().

2267 {
2268  GNUNET_break (NULL != c->warn_task);
2269  if (NULL != c->warn_task)
2270  {
2272  c->warn_task = NULL;
2273  }
2274 }
#define GNUNET_break(cond)
Use this for internal assertion violations that are not fatal (can be handled) but should not occur...
struct GNUNET_SCHEDULER_Task * warn_task
Task that warns about missing calls to GNUNET_SERVICE_client_continue().
Definition: service.c:286
void * GNUNET_SCHEDULER_cancel(struct GNUNET_SCHEDULER_Task *task)
Cancel the task with the specified identifier.
Definition: scheduler.c:972
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◆ GNUNET_SERVICE_client_drop()

void GNUNET_SERVICE_client_drop ( struct GNUNET_SERVICE_Client c)

Ask the server to disconnect from the given client.

This is the same as returning GNUNET_SYSERR within the check procedure when handling a message, except that it allows dropping of a client even when not handling a message from that client. The disconnect_cb will be called on c even if the application closes the connection using this function.

This function should be called (outside of util's internal logic) if (and usually only if) the client has violated the protocol. Otherwise, we should leave it to the client to disconnect from the service.

Parameters
cclient to disconnect now

This is the same as returning GNUNET_SYSERR within the check procedure when handling a message, wexcept that it allows dropping of a client even when not handling a message from that client. The disconnect_cb will be called on c even if the application closes the connection using this function.

Parameters
cclient to disconnect now

Definition at line 2323 of file service.c.

References GNUNET_SERVICE_Handle::cb_cls, GNUNET_SERVICE_Handle::clients_head, GNUNET_SERVICE_Handle::clients_tail, GNUNET_SERVICE_Handle::disconnect_cb, GNUNET_SERVICE_Client::drop_task, finish_client_drop(), GNUNET_assert, GNUNET_CONTAINER_DLL_remove, GNUNET_ERROR_TYPE_DEBUG, GNUNET_log, GNUNET_SCHEDULER_add_now(), GNUNET_SCHEDULER_cancel(), LOG, GNUNET_SERVICE_Client::mq, GNUNET_SERVICE_Client::recv_task, GNUNET_SERVICE_Client::send_task, ServiceListenContext::sh, GNUNET_SERVICE_Client::sh, t, GNUNET_SERVICE_Client::user_context, and GNUNET_SERVICE_Client::warn_task.

Referenced by check_client_seed(), demultiplex_with_cmc(), destroy_service_session(), force_timeout(), GNUNET_SERVICE_shutdown(), GNUNET_SERVICE_stop(), GSC_CLIENTS_reject_request(), handle_add_host(), handle_add_queue_message(), handle_announce(), handle_ats_start(), handle_attestation_iteration_next(), handle_attestation_iteration_stop(), handle_autoconfig_request(), handle_barrier_cancel(), handle_barrier_init(), handle_barrier_status(), handle_barrier_wait(), handle_bob_client_message(), handle_channel_create(), handle_client_accept(), handle_client_audio_message(), handle_client_blacklist_init(), handle_client_blacklist_reply(), handle_client_cancel(), handle_client_conclude(), handle_client_copy_lazy_connect(), handle_client_copy_lazy_prepare(), handle_client_create_set(), handle_client_decrypt(), handle_client_evaluate(), handle_client_hangup_message(), handle_client_insert(), handle_client_iter_ack(), handle_client_iterate(), handle_client_keygen(), handle_client_listen(), handle_client_monitor_peers(), handle_client_mutation(), handle_client_pickup_message(), handle_client_recv_ok(), handle_client_redirect_to_ip(), handle_client_redirect_to_service(), handle_client_register_message(), handle_client_response(), handle_client_resume_message(), handle_client_start(), handle_client_suspend_message(), handle_del_address(), handle_del_queue_message(), handle_dht_local_get_result_seen(), handle_fragment_box(), handle_get_zero_anonymity(), handle_iterate(), handle_iteration_next(), handle_iteration_stop(), handle_link_controllers(), handle_local_data(), handle_lookup_block(), handle_monitor_next(), handle_monitor_start(), handle_overlay_connect(), handle_peer_create(), handle_port_close(), handle_port_open(), handle_queue_create_fail(), handle_queue_create_ok(), handle_raw_message(), handle_record_lookup(), handle_record_store(), handle_register(), handle_request_connection_reversal(), handle_revoke_message(), handle_search(), handle_send_message_ack(), handle_store(), handle_stun(), handle_suggest(), handle_suggest_cancel(), handle_test(), handle_ticket_iteration_next(), handle_ticket_iteration_stop(), handle_watch(), handle_watch_cancel(), handle_zone_to_name(), monitor_iteration_next(), process_get(), record_iterator(), resume_client_receive(), send_lookup_response(), send_push(), service_client_recv(), service_mq_error_handler(), shutdown_task(), and store_record_continuation().

2324 {
2325  struct GNUNET_SERVICE_Handle *sh = c->sh;
2326 
2328  "Client dropped: %p (MQ: %p)\n",
2329  c,
2330  c->mq);
2331 #if EXECINFO
2332  {
2333  void *backtrace_array[MAX_TRACE_DEPTH];
2334  int num_backtrace_strings = backtrace (backtrace_array, MAX_TRACE_DEPTH);
2335  char **backtrace_strings =
2336  backtrace_symbols (backtrace_array, t->num_backtrace_strings);
2337  for (unsigned int i = 0; i < num_backtrace_strings; i++)
2339  "client drop trace %u: %s\n",
2340  i,
2341  backtrace_strings[i]);
2342  }
2343 #endif
2344  if (NULL != c->drop_task)
2345  {
2346  /* asked to drop twice! */
2347  GNUNET_assert (0);
2348  return;
2349  }
2351  sh->clients_tail,
2352  c);
2353  if (NULL != sh->disconnect_cb)
2354  sh->disconnect_cb (sh->cb_cls,
2355  c,
2356  c->user_context);
2357  if (NULL != c->warn_task)
2358  {
2360  c->warn_task = NULL;
2361  }
2362  if (NULL != c->recv_task)
2363  {
2365  c->recv_task = NULL;
2366  }
2367  if (NULL != c->send_task)
2368  {
2370  c->send_task = NULL;
2371  }
2373 }
#define GNUNET_CONTAINER_DLL_remove(head, tail, element)
Remove an element from a DLL.
struct GNUNET_SERVICE_Client * clients_head
Our clients, kept in a DLL.
Definition: service.c:161
struct GNUNET_SERVICE_Client * clients_tail
Our clients, kept in a DLL.
Definition: service.c:166
struct GNUNET_SCHEDULER_Task * send_task
Task that transmit data to the client.
Definition: service.c:303
Handle to a service.
Definition: service.c:116
#define GNUNET_assert(cond)
Use this for fatal errors that cannot be handled.
static struct GNUNET_SCHEDULER_Task * t
Main task.
struct GNUNET_MQ_Handle * mq
Message queue for the client.
Definition: service.c:275
void * user_context
User context value, value returned from the connect callback.
Definition: service.c:314
static void finish_client_drop(void *cls)
Asynchronously finish dropping the client.
Definition: service.c:2283
struct GNUNET_SCHEDULER_Task * warn_task
Task that warns about missing calls to GNUNET_SERVICE_client_continue().
Definition: service.c:286
struct GNUNET_SCHEDULER_Task * GNUNET_SCHEDULER_add_now(GNUNET_SCHEDULER_TaskCallback task, void *task_cls)
Schedule a new task to be run as soon as possible.
Definition: scheduler.c:1296
static struct SolverHandle * sh
#define LOG(kind,...)
Definition: service.c:40
#define GNUNET_log(kind,...)
struct GNUNET_SERVICE_Handle * sh
Service that this client belongs to.
Definition: service.c:265
GNUNET_SERVICE_DisconnectHandler disconnect_cb
Function to call when clients disconnect / are disconnected.
Definition: service.c:141
struct GNUNET_SCHEDULER_Task * recv_task
Task that receives data from the client to pass it to the handlers.
Definition: service.c:298
struct GNUNET_SCHEDULER_Task * drop_task
Task run to finish dropping the client after the stack has properly unwound.
Definition: service.c:292
void * cb_cls
Closure for service_init_cb, connect_cb, disconnect_cb.
Definition: service.c:146
void * GNUNET_SCHEDULER_cancel(struct GNUNET_SCHEDULER_Task *task)
Cancel the task with the specified identifier.
Definition: scheduler.c:972
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◆ GNUNET_SERVICE_shutdown()

void GNUNET_SERVICE_shutdown ( struct GNUNET_SERVICE_Handle sh)

Explicitly stops the service.

Parameters
shserver to shutdown

Definition at line 2382 of file service.c.

References GNUNET_SERVICE_Handle::clients_head, do_suspend(), GNUNET_SERVICE_client_drop(), GNUNET_SERVICE_Handle::suspend_state, and SUSPEND_STATE_SHUTDOWN.

Referenced by do_shutdown(), finish_client_drop(), GNUNET_SERVICE_client_mark_monitor(), and service_shutdown().

2383 {
2384  struct GNUNET_SERVICE_Client *client;
2385 
2386  if (0 == (sh->suspend_state & SUSPEND_STATE_SHUTDOWN))
2388  while (NULL != (client = sh->clients_head))
2389  GNUNET_SERVICE_client_drop (client);
2390 }
enum SuspendReason suspend_state
Are we suspended, and if so, why?
Definition: service.c:220
struct GNUNET_SERVICE_Client * clients_head
Our clients, kept in a DLL.
Definition: service.c:161
static void do_suspend(struct GNUNET_SERVICE_Handle *sh, enum SuspendReason sr)
Suspend accepting connections from the listen socket temporarily.
Definition: service.c:382
Handle to a client that is connected to a service.
Definition: service.c:250
void GNUNET_SERVICE_client_drop(struct GNUNET_SERVICE_Client *c)
Ask the server to disconnect from the given client.
Definition: service.c:2323
Suspension because service was permanently shutdown.
Definition: service.c:109
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◆ GNUNET_SERVICE_client_mark_monitor()

void GNUNET_SERVICE_client_mark_monitor ( struct GNUNET_SERVICE_Client c)

Set the 'monitor' flag on this client.

Clients which have been marked as 'monitors' won't prevent the server from shutting down once #GNUNET_SERVICE_stop_listening() has been invoked. The idea is that for "normal" clients we likely want to allow them to process their requests; however, monitor-clients are likely to 'never' disconnect during shutdown and thus will not be considered when determining if the server should continue to exist after shutdown has been triggered.

Parameters
cclient to mark as a monitor

Definition at line 2406 of file service.c.

References GNUNET_NO, GNUNET_SERVICE_shutdown(), GNUNET_YES, have_non_monitor_clients(), GNUNET_SERVICE_Client::is_monitor, GNUNET_SERVICE_Client::sh, GNUNET_SERVICE_Handle::suspend_state, and SUSPEND_STATE_SHUTDOWN.

Referenced by client_connect_cb(), handle_client_blacklist_init(), handle_client_monitor_peers(), handle_client_monitor_plugins(), handle_monitor_start(), handle_notify(), handle_start_message(), and handle_watch().

2407 {
2408  c->is_monitor = GNUNET_YES;
2409  if (((0 != (SUSPEND_STATE_SHUTDOWN & c->sh->suspend_state)) &&
2412 }
enum SuspendReason suspend_state
Are we suspended, and if so, why?
Definition: service.c:220
int is_monitor
Is this client a &#39;monitor&#39; client that should not be counted when deciding on destroying the server d...
Definition: service.c:339
struct GNUNET_SERVICE_Handle * sh
Service that this client belongs to.
Definition: service.c:265
Suspension because service was permanently shutdown.
Definition: service.c:109
static int have_non_monitor_clients(struct GNUNET_SERVICE_Handle *sh)
Check if any of the clients we have left are unrelated to monitoring.
Definition: service.c:361
void GNUNET_SERVICE_shutdown(struct GNUNET_SERVICE_Handle *sh)
Explicitly stops the service.
Definition: service.c:2382
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◆ GNUNET_SERVICE_client_persist()

void GNUNET_SERVICE_client_persist ( struct GNUNET_SERVICE_Client c)

Set the persist option on this client.

Indicates that the underlying socket or fd should never really be closed. Used for indicating process death.

Parameters
cclient to persist the socket (never to be closed)

Definition at line 2423 of file service.c.

References GNUNET_YES, and GNUNET_SERVICE_Client::persist.

Referenced by client_connect_cb(), and handle_stop().

2424 {
2425  c->persist = GNUNET_YES;
2426 }
int persist
Persist the file handle for this client no matter what happens, force the OS to close once the proces...
Definition: service.c:332
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