GNUnet  0.11.x
Data Structures | Macros | Functions | Variables
gnunet-rest-server.c File Reference

REST service for GNUnet services. More...

#include "platform.h"
#include <microhttpd.h>
#include "gnunet_util_lib.h"
#include "gnunet_rest_plugin.h"
#include "gnunet_mhd_compat.h"
Include dependency graph for gnunet-rest-server.c:

Go to the source code of this file.

Data Structures

struct  MhdConnectionHandle
 MHD Connection handle. More...
 

Macros

#define GNUNET_REST_SERVICE_PORT   7776
 Default Socks5 listen port. More...
 
#define MAX_HTTP_URI_LENGTH   2048
 Maximum supported length for a URI. More...
 
#define HTTP_PORT   80
 Port for plaintext HTTP. More...
 
#define HTTPS_PORT   443
 Port for HTTPS. More...
 
#define MHD_CACHE_TIMEOUT   GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_MINUTES, 5)
 After how long do we clean up unused MHD SSL/TLS instances? More...
 
#define GN_REST_STATE_INIT   0
 
#define GN_REST_STATE_PROCESSING   1
 

Functions

static void do_httpd (void *cls)
 Task run whenever HTTP server operations are pending. More...
 
static void run_mhd_now ()
 Run MHD now, we have extra data ready for the callback. More...
 
static void plugin_callback (void *cls, struct MHD_Response *resp, int status)
 Plugin result callback. More...
 
static int cleanup_url_map (void *cls, const struct GNUNET_HashCode *key, void *value)
 
static void cleanup_handle (struct MhdConnectionHandle *handle)
 
static int header_iterator (void *cls, enum MHD_ValueKind kind, const char *key, const char *value)
 
static int url_iterator (void *cls, enum MHD_ValueKind kind, const char *key, const char *value)
 
static MHD_RESULT post_data_iter (void *cls, enum MHD_ValueKind kind, const char *key, const char *filename, const char *content_type, const char *transfer_encoding, const char *data, uint64_t off, size_t size)
 
static MHD_RESULT create_response (void *cls, struct MHD_Connection *con, const char *url, const char *meth, const char *ver, const char *upload_data, size_t *upload_data_size, void **con_cls)
 Main MHD callback for handling requests. More...
 
static void mhd_completed_cb (void *cls, struct MHD_Connection *connection, void **con_cls, enum MHD_RequestTerminationCode toe)
 Function called when MHD decides that we are done with a connection. More...
 
static void kill_httpd ()
 Kill the MHD daemon. More...
 
static void schedule_httpd ()
 Schedule MHD. More...
 
static void do_accept (void *cls)
 Accept new incoming connections. More...
 
static void do_shutdown (void *cls)
 Task run on shutdown. More...
 
static struct GNUNET_NETWORK_Handlebind_v4 ()
 Create an IPv4 listen socket bound to our port. More...
 
static struct GNUNET_NETWORK_Handlebind_v6 ()
 Create an IPv6 listen socket bound to our port. More...
 
static void load_plugin (void *cls, const char *libname, void *lib_ret)
 Callback for plugin load. More...
 
static void run (void *cls, char *const *args, const char *cfgfile, const struct GNUNET_CONFIGURATION_Handle *c)
 Main function that will be run. More...
 
int main (int argc, char *const *argv)
 The main function for gnunet-rest-service. More...
 

Variables

static struct GNUNET_SCHEDULER_Taskhttpd_task
 The task ID. More...
 
static in_addr_t address
 The address to bind to. More...
 
static struct in6_addr address6
 The IPv6 address to bind to. More...
 
static unsigned long long port = 7776
 The port the service is running on (default 7776) More...
 
static struct GNUNET_NETWORK_Handlelsock4
 The listen socket of the service for IPv4. More...
 
static struct GNUNET_NETWORK_Handlelsock6
 The listen socket of the service for IPv6. More...
 
static struct GNUNET_SCHEDULER_Taskltask4
 The listen task ID for IPv4. More...
 
static struct GNUNET_SCHEDULER_Taskltask6
 The listen task ID for IPv6. More...
 
static struct MHD_Daemon * httpd
 Daemon for HTTP. More...
 
static struct MHD_Response * failure_response
 Response we return on failures. More...
 
static const struct GNUNET_CONFIGURATION_Handlecfg
 Our configuration. More...
 
static struct GNUNET_CONTAINER_MultiHashMapplugin_map
 Map of loaded plugins. More...
 
static int echo_origin
 Echo request Origin in CORS. More...
 
static char * allow_origins
 Allowed Origins (CORS) More...
 
static char * allow_headers
 Allowed Headers (CORS) More...
 
static char * allow_credentials
 Allowed Credentials (CORS) More...
 

Detailed Description

REST service for GNUnet services.

Author
Martin Schanzenbach

Definition in file gnunet-rest-server.c.

Macro Definition Documentation

◆ GNUNET_REST_SERVICE_PORT

#define GNUNET_REST_SERVICE_PORT   7776

Default Socks5 listen port.

Definition at line 35 of file gnunet-rest-server.c.

Referenced by run().

◆ MAX_HTTP_URI_LENGTH

#define MAX_HTTP_URI_LENGTH   2048

Maximum supported length for a URI.

Should die.

Deprecated:

Definition at line 41 of file gnunet-rest-server.c.

◆ HTTP_PORT

#define HTTP_PORT   80

Port for plaintext HTTP.

Definition at line 46 of file gnunet-rest-server.c.

◆ HTTPS_PORT

#define HTTPS_PORT   443

Port for HTTPS.

Definition at line 51 of file gnunet-rest-server.c.

◆ MHD_CACHE_TIMEOUT

#define MHD_CACHE_TIMEOUT   GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_MINUTES, 5)

After how long do we clean up unused MHD SSL/TLS instances?

Definition at line 56 of file gnunet-rest-server.c.

◆ GN_REST_STATE_INIT

#define GN_REST_STATE_INIT   0

Definition at line 59 of file gnunet-rest-server.c.

Referenced by create_response().

◆ GN_REST_STATE_PROCESSING

#define GN_REST_STATE_PROCESSING   1

Definition at line 60 of file gnunet-rest-server.c.

Referenced by create_response().

Function Documentation

◆ do_httpd()

static void do_httpd ( void *  cls)
static

Task run whenever HTTP server operations are pending.

Parameters
clsNULL

Definition at line 659 of file gnunet-rest-server.c.

References httpd, and schedule_httpd().

Referenced by run_mhd_now(), and schedule_httpd().

660 {
661  httpd_task = NULL;
662  MHD_run (httpd);
663  schedule_httpd ();
664 }
static struct GNUNET_SCHEDULER_Task * httpd_task
The task ID.
static void schedule_httpd()
Schedule MHD.
static struct MHD_Daemon * httpd
Daemon for HTTP.
Here is the call graph for this function:
Here is the caller graph for this function:

◆ run_mhd_now()

static void run_mhd_now ( )
static

Run MHD now, we have extra data ready for the callback.

Definition at line 178 of file gnunet-rest-server.c.

References do_httpd(), GNUNET_SCHEDULER_add_now(), and GNUNET_SCHEDULER_cancel().

Referenced by create_response(), and plugin_callback().

179 {
180  if (NULL != httpd_task)
181  {
183  httpd_task = NULL;
184  }
186 }
static struct GNUNET_SCHEDULER_Task * httpd_task
The task ID.
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 void do_httpd(void *cls)
Task run whenever HTTP server operations are pending.
void * GNUNET_SCHEDULER_cancel(struct GNUNET_SCHEDULER_Task *task)
Cancel the task with the specified identifier.
Definition: scheduler.c:972
Here is the call graph for this function:
Here is the caller graph for this function:

◆ plugin_callback()

static void plugin_callback ( void *  cls,
struct MHD_Response *  resp,
int  status 
)
static

Plugin result callback.

Parameters
clsclosure (MHD connection handle)
datathe data to return to the caller
lenlength of the data
statusGNUNET_OK if successful

Definition at line 198 of file gnunet-rest-server.c.

References MhdConnectionHandle::con, handle, MhdConnectionHandle::response, run_mhd_now(), and MhdConnectionHandle::status.

Referenced by create_response().

199 {
200  struct MhdConnectionHandle *handle = cls;
201 
202  handle->status = status;
203  handle->response = resp;
204  MHD_resume_connection (handle->con);
205  run_mhd_now ();
206 }
MHD Connection handle.
uint16_t status
See PRISM_STATUS_*-constants.
static struct GNUNET_DNS_Handle * handle
Handle to transport service.
struct MHD_Connection * con
struct MHD_Response * response
static void run_mhd_now()
Run MHD now, we have extra data ready for the callback.
Here is the call graph for this function:
Here is the caller graph for this function:

◆ cleanup_url_map()

static int cleanup_url_map ( void *  cls,
const struct GNUNET_HashCode key,
void *  value 
)
static

Definition at line 210 of file gnunet-rest-server.c.

References GNUNET_free, and GNUNET_YES.

Referenced by cleanup_handle().

211 {
212  GNUNET_free (value);
213  return GNUNET_YES;
214 }
static char * value
Value of the record to add/remove.
#define GNUNET_free(ptr)
Wrapper around free.
Here is the caller graph for this function:

◆ cleanup_handle()

static void cleanup_handle ( struct MhdConnectionHandle handle)
static

Definition at line 218 of file gnunet-rest-server.c.

References cleanup_url_map(), MhdConnectionHandle::data_handle, GNUNET_CONTAINER_multihashmap_destroy(), GNUNET_CONTAINER_multihashmap_iterate(), GNUNET_free, GNUNET_REST_RequestHandle::header_param_map, MhdConnectionHandle::response, and GNUNET_REST_RequestHandle::url_param_map.

Referenced by create_response().

219 {
220  if (NULL != handle->response)
221  MHD_destroy_response (handle->response);
222  if (NULL != handle->data_handle)
223  {
224  if (NULL != handle->data_handle->header_param_map)
225  {
229  NULL);
231  handle->data_handle->header_param_map);
232  }
233  if (NULL != handle->data_handle->url_param_map)
234  {
237  NULL);
239  handle->data_handle->url_param_map);
240  }
241  GNUNET_free (handle->data_handle);
242  }
243  GNUNET_free (handle);
244 }
struct GNUNET_REST_RequestHandle * data_handle
struct GNUNET_CONTAINER_MultiHashMap * url_param_map
Map of url parameters.
void GNUNET_CONTAINER_multihashmap_destroy(struct GNUNET_CONTAINER_MultiHashMap *map)
Destroy a hash map.
static int cleanup_url_map(void *cls, const struct GNUNET_HashCode *key, void *value)
struct GNUNET_CONTAINER_MultiHashMap * header_param_map
Map of headers.
int GNUNET_CONTAINER_multihashmap_iterate(struct GNUNET_CONTAINER_MultiHashMap *map, GNUNET_CONTAINER_MulitHashMapIteratorCallback it, void *it_cls)
Iterate over all entries in the map.
struct MHD_Response * response
#define GNUNET_free(ptr)
Wrapper around free.
Here is the call graph for this function:
Here is the caller graph for this function:

◆ header_iterator()

static int header_iterator ( void *  cls,
enum MHD_ValueKind  kind,
const char *  key,
const char *  value 
)
static

Definition at line 248 of file gnunet-rest-server.c.

References GNUNET_asprintf(), GNUNET_CONTAINER_multihashmap_put(), GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_ONLY, GNUNET_CRYPTO_hash(), GNUNET_ERROR_TYPE_ERROR, GNUNET_free, GNUNET_log, GNUNET_OK, GNUNET_strdup, GNUNET_STRINGS_utf8_tolower(), handle, and GNUNET_REST_RequestHandle::header_param_map.

Referenced by create_response().

252 {
253  struct GNUNET_REST_RequestHandle *handle = cls;
254  struct GNUNET_HashCode hkey;
255  char *val;
256  char *lowerkey;
257 
258  lowerkey = GNUNET_strdup (key);
259  GNUNET_STRINGS_utf8_tolower (key, lowerkey);
260  GNUNET_CRYPTO_hash (lowerkey, strlen (lowerkey), &hkey);
261  GNUNET_asprintf (&val, "%s", value);
263  handle->header_param_map,
264  &hkey,
265  val,
267  {
269  "Could not load add header `%s'=%s\n",
270  lowerkey,
271  value);
272  }
273  GNUNET_free (lowerkey);
274  return MHD_YES;
275 }
#define GNUNET_strdup(a)
Wrapper around GNUNET_xstrdup_.
int GNUNET_asprintf(char **buf, const char *format,...)
Like asprintf, just portable.
static char * value
Value of the record to add/remove.
void GNUNET_CRYPTO_hash(const void *block, size_t size, struct GNUNET_HashCode *ret)
Compute hash of a given block.
Definition: crypto_hash.c:48
static struct GNUNET_DNS_Handle * handle
Handle to transport service.
A 512-bit hashcode.
There must only be one value per key; storing a value should fail if a value under the same key alrea...
struct GNUNET_HashCode key
The key used in the DHT.
int GNUNET_CONTAINER_multihashmap_put(struct GNUNET_CONTAINER_MultiHashMap *map, const struct GNUNET_HashCode *key, void *value, enum GNUNET_CONTAINER_MultiHashMapOption opt)
Store a key-value pair in the map.
#define GNUNET_log(kind,...)
struct GNUNET_CONTAINER_MultiHashMap * header_param_map
Map of headers.
#define GNUNET_free(ptr)
Wrapper around free.
void GNUNET_STRINGS_utf8_tolower(const char *input, char *output)
Convert the utf-8 input string to lower case.
Definition: strings.c:567
Here is the call graph for this function:
Here is the caller graph for this function:

◆ url_iterator()

static int url_iterator ( void *  cls,
enum MHD_ValueKind  kind,
const char *  key,
const char *  value 
)
static

Definition at line 279 of file gnunet-rest-server.c.

References GNUNET_asprintf(), GNUNET_CONTAINER_multihashmap_put(), GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_ONLY, GNUNET_CRYPTO_hash(), GNUNET_ERROR_TYPE_ERROR, GNUNET_log, GNUNET_OK, handle, MHD_RESULT, and GNUNET_REST_RequestHandle::url_param_map.

Referenced by create_response().

283 {
284  struct GNUNET_REST_RequestHandle *handle = cls;
285  struct GNUNET_HashCode hkey;
286  char *val;
287 
288  GNUNET_CRYPTO_hash (key, strlen (key), &hkey);
289  GNUNET_asprintf (&val, "%s", value);
291  handle->url_param_map,
292  &hkey,
293  val,
295  {
297  "Could not load add url param `%s'=%s\n",
298  key,
299  value);
300  }
301  return MHD_YES;
302 }
int GNUNET_asprintf(char **buf, const char *format,...)
Like asprintf, just portable.
static char * value
Value of the record to add/remove.
struct GNUNET_CONTAINER_MultiHashMap * url_param_map
Map of url parameters.
void GNUNET_CRYPTO_hash(const void *block, size_t size, struct GNUNET_HashCode *ret)
Compute hash of a given block.
Definition: crypto_hash.c:48
static struct GNUNET_DNS_Handle * handle
Handle to transport service.
A 512-bit hashcode.
There must only be one value per key; storing a value should fail if a value under the same key alrea...
struct GNUNET_HashCode key
The key used in the DHT.
int GNUNET_CONTAINER_multihashmap_put(struct GNUNET_CONTAINER_MultiHashMap *map, const struct GNUNET_HashCode *key, void *value, enum GNUNET_CONTAINER_MultiHashMapOption opt)
Store a key-value pair in the map.
#define GNUNET_log(kind,...)
Here is the call graph for this function:
Here is the caller graph for this function:

◆ post_data_iter()

static MHD_RESULT post_data_iter ( void *  cls,
enum MHD_ValueKind  kind,
const char *  key,
const char *  filename,
const char *  content_type,
const char *  transfer_encoding,
const char *  data,
uint64_t  off,
size_t  size 
)
static

Definition at line 306 of file gnunet-rest-server.c.

References GNUNET_asprintf(), GNUNET_CONTAINER_multihashmap_put(), GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_ONLY, GNUNET_CRYPTO_hash(), GNUNET_ERROR_TYPE_ERROR, GNUNET_free, GNUNET_log, GNUNET_OK, handle, MHD_RESULT, and GNUNET_REST_RequestHandle::url_param_map.

Referenced by create_response().

315 {
316  struct GNUNET_REST_RequestHandle *handle = cls;
317  struct GNUNET_HashCode hkey;
318  char *val;
319 
320  if (MHD_POSTDATA_KIND != kind)
321  return MHD_YES;
322 
323  GNUNET_CRYPTO_hash (key, strlen (key), &hkey);
324  GNUNET_asprintf (&val, "%s", data);
326  handle->url_param_map,
327  &hkey,
328  val,
330  {
332  "Could not load add url param '%s'=%s\n",
333  key,
334  data);
335  GNUNET_free (val);
336  }
337  return MHD_YES;
338 }
int GNUNET_asprintf(char **buf, const char *format,...)
Like asprintf, just portable.
struct GNUNET_CONTAINER_MultiHashMap * url_param_map
Map of url parameters.
void GNUNET_CRYPTO_hash(const void *block, size_t size, struct GNUNET_HashCode *ret)
Compute hash of a given block.
Definition: crypto_hash.c:48
static struct GNUNET_DNS_Handle * handle
Handle to transport service.
A 512-bit hashcode.
There must only be one value per key; storing a value should fail if a value under the same key alrea...
struct GNUNET_HashCode key
The key used in the DHT.
int GNUNET_CONTAINER_multihashmap_put(struct GNUNET_CONTAINER_MultiHashMap *map, const struct GNUNET_HashCode *key, void *value, enum GNUNET_CONTAINER_MultiHashMapOption opt)
Store a key-value pair in the map.
#define GNUNET_log(kind,...)
uint32_t data
The data value.
#define GNUNET_free(ptr)
Wrapper around free.
Here is the call graph for this function:
Here is the caller graph for this function:

◆ create_response()

static MHD_RESULT create_response ( void *  cls,
struct MHD_Connection *  con,
const char *  url,
const char *  meth,
const char *  ver,
const char *  upload_data,
size_t *  upload_data_size,
void **  con_cls 
)
static

Main MHD callback for handling requests.

Parameters
clsunused
conMHD connection handle
urlthe url in the request
meththe HTTP method used ("GET", "PUT", etc.)
verthe HTTP version string (i.e. "HTTP/1.1")
upload_datathe data being uploaded (excluding HEADERS, for a POST that fits into memory and that is encoded with a supported encoding, the POST data will NOT be given in upload_data and is instead available as part of MHD_get_connection_values; very large POST data will be made available incrementally in upload_data)
upload_data_sizeset initially to the size of the upload_data provided; the method must update this value to the number of bytes NOT processed;
con_clspointer to location where we store the 'struct Request'
Returns
#MHD_YES if the connection was handled successfully, #MHD_NO if the socket must be closed due to a serious error while handling the request

Definition at line 367 of file gnunet-rest-server.c.

References allow_credentials, allow_headers, allow_origins, cleanup_handle(), MhdConnectionHandle::con, GNUNET_REST_RequestHandle::data, MhdConnectionHandle::data_handle, GNUNET_REST_RequestHandle::data_size, echo_origin, failure_response, GN_REST_STATE_INIT, GN_REST_STATE_PROCESSING, GNUNET_CONTAINER_multihashmap_create(), GNUNET_CONTAINER_multihashmap_get(), GNUNET_CRYPTO_hash(), GNUNET_ERROR_TYPE_DEBUG, GNUNET_free, GNUNET_log, GNUNET_new, GNUNET_NO, GNUNET_strdup, GNUNET_YES, header_iterator(), GNUNET_REST_RequestHandle::header_param_map, GNUNET_REST_RequestHandle::method, MHD_RESULT, MhdConnectionHandle::plugin, plugin_callback(), plugin_name, post_data_iter(), MhdConnectionHandle::pp, GNUNET_REST_Plugin::process_request, MhdConnectionHandle::response, ret, run_mhd_now(), MhdConnectionHandle::state, MhdConnectionHandle::status, GNUNET_REST_RequestHandle::url, url_iterator(), and GNUNET_REST_RequestHandle::url_param_map.

Referenced by run().

375 {
376  char *plugin_name;
377  char *origin;
378  struct GNUNET_HashCode key;
379  struct MhdConnectionHandle *con_handle;
380  struct GNUNET_REST_RequestHandle *rest_conndata_handle;
381 
382  con_handle = *con_cls;
383 
384  if (NULL == *con_cls)
385  {
386  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "New connection %s\n", url);
387  char tmp_url[strlen (url) + 1];
388  strcpy (tmp_url, url);
389  con_handle = GNUNET_new (struct MhdConnectionHandle);
390  con_handle->con = con;
391  con_handle->state = GN_REST_STATE_INIT;
392  *con_cls = con_handle;
393 
394  plugin_name = strtok (tmp_url, "/");
395 
396  if (NULL != plugin_name)
397  {
398  GNUNET_CRYPTO_hash (plugin_name, strlen (plugin_name), &key);
399 
401  }
402  if (NULL == con_handle->plugin)
403  {
404  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Queueing response with MHD\n");
405  GNUNET_free (con_handle);
406  return MHD_queue_response (con, MHD_HTTP_NOT_FOUND, failure_response);
407  }
408 
409  return MHD_YES;
410  }
411  if (GN_REST_STATE_INIT == con_handle->state)
412  {
413  rest_conndata_handle = GNUNET_new (struct GNUNET_REST_RequestHandle);
414  rest_conndata_handle->method = meth;
415  rest_conndata_handle->url = url;
416  rest_conndata_handle->data = upload_data;
417  rest_conndata_handle->data_size = *upload_data_size;
418  rest_conndata_handle->url_param_map =
420  rest_conndata_handle->header_param_map =
422  con_handle->data_handle = rest_conndata_handle;
423  MHD_get_connection_values (con,
424  MHD_GET_ARGUMENT_KIND,
425  (MHD_KeyValueIterator) & url_iterator,
426  rest_conndata_handle);
427  MHD_get_connection_values (con,
428  MHD_HEADER_KIND,
429  (MHD_KeyValueIterator) & header_iterator,
430  rest_conndata_handle);
431  con_handle->pp = MHD_create_post_processor (con,
432  65536,
434  rest_conndata_handle);
435  if (*upload_data_size)
436  {
437  MHD_post_process (con_handle->pp, upload_data, *upload_data_size);
438  }
439  MHD_destroy_post_processor (con_handle->pp);
440 
441  con_handle->state = GN_REST_STATE_PROCESSING;
442  con_handle->plugin->process_request (rest_conndata_handle,
444  con_handle);
445  *upload_data_size = 0;
446  run_mhd_now ();
447  return MHD_YES;
448  }
449  if (NULL == con_handle->response)
450  {
451  // Suspend connection until plugin is done
452  MHD_suspend_connection (con_handle->con);
453  return MHD_YES;
454  }
455  MHD_resume_connection (con_handle->con);
457  "Queueing response from plugin with MHD\n");
458  // Handle Preflights for extensions
459  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Checking origin\n");
460  GNUNET_CRYPTO_hash ("origin", strlen ("origin"), &key);
461  origin = GNUNET_CONTAINER_multihashmap_get (con_handle->data_handle
463  &key);
464  if (NULL != origin)
465  {
466  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Origin: %s\n", origin);
467  // Only echo for browser plugins
468  if (GNUNET_YES == echo_origin)
469  {
470  if ((0 ==
471  strncmp ("moz-extension://", origin, strlen ("moz-extension://"))) ||
472  (0 == strncmp ("chrome-extension://",
473  origin,
474  strlen ("chrome-extension://"))))
475  {
476  MHD_add_response_header (con_handle->response,
477  MHD_HTTP_HEADER_ACCESS_CONTROL_ALLOW_ORIGIN,
478  origin);
479  }
480  }
481  if (NULL != allow_origins)
482  {
483  char *tmp = GNUNET_strdup (allow_origins);
484  char *allow_origin = strtok (tmp, ",");
485  while (NULL != allow_origin)
486  {
487  if (0 == strncmp (allow_origin, origin, strlen (allow_origin)))
488  {
489  MHD_add_response_header (con_handle->response,
490  MHD_HTTP_HEADER_ACCESS_CONTROL_ALLOW_ORIGIN,
491  allow_origin);
492  break;
493  }
494  allow_origin = strtok (NULL, ",");
495  }
496  GNUNET_free (tmp);
497  }
498  }
499  if (NULL != allow_credentials)
500  {
501  MHD_add_response_header (con_handle->response,
502  "Access-Control-Allow-Credentials",
504  }
505  if (NULL != allow_headers)
506  {
507  MHD_add_response_header (con_handle->response,
508  "Access-Control-Allow-Headers",
509  allow_headers);
510  }
511  run_mhd_now ();
512  {
513  MHD_RESULT ret = MHD_queue_response (con,
514  con_handle->status,
515  con_handle->response);
516  cleanup_handle (con_handle);
517  return ret;
518  }
519 }
static char * allow_headers
Allowed Headers (CORS)
static struct MHD_Response * failure_response
Response we return on failures.
size_t data_size
The POST data size.
MHD Connection handle.
struct GNUNET_REST_RequestHandle * data_handle
struct GNUNET_REST_Plugin * plugin
static int ret
Return value of the commandline.
Definition: gnunet-abd.c:81
#define GNUNET_new(type)
Allocate a struct or union of the given type.
void(* process_request)(struct GNUNET_REST_RequestHandle *handle, GNUNET_REST_ResultProcessor proc, void *proc_cls)
Function to process a REST call.
static void cleanup_handle(struct MhdConnectionHandle *handle)
#define GNUNET_strdup(a)
Wrapper around GNUNET_xstrdup_.
static int url_iterator(void *cls, enum MHD_ValueKind kind, const char *key, const char *value)
void * GNUNET_CONTAINER_multihashmap_get(const struct GNUNET_CONTAINER_MultiHashMap *map, const struct GNUNET_HashCode *key)
Given a key find a value in the map matching the key.
static int echo_origin
Echo request Origin in CORS.
#define GN_REST_STATE_INIT
struct GNUNET_CONTAINER_MultiHashMap * url_param_map
Map of url parameters.
void GNUNET_CRYPTO_hash(const void *block, size_t size, struct GNUNET_HashCode *ret)
Compute hash of a given block.
Definition: crypto_hash.c:48
const char * url
The url as string.
static char * allow_origins
Allowed Origins (CORS)
const char * method
The HTTP method as MHD value (see microhttpd.h)
static int header_iterator(void *cls, enum MHD_ValueKind kind, const char *key, const char *value)
A 512-bit hashcode.
#define GN_REST_STATE_PROCESSING
const char * data
The POST data.
struct GNUNET_HashCode key
The key used in the DHT.
static char * allow_credentials
Allowed Credentials (CORS)
struct MHD_Connection * con
static struct GNUNET_CONTAINER_MultiHashMap * plugin_map
Map of loaded plugins.
#define MHD_RESULT
Data type to use for functions return an "MHD result".
struct MHD_PostProcessor * pp
#define GNUNET_log(kind,...)
struct GNUNET_CONTAINER_MultiHashMap * GNUNET_CONTAINER_multihashmap_create(unsigned int len, int do_not_copy_keys)
Create a multi hash map.
struct GNUNET_CONTAINER_MultiHashMap * header_param_map
Map of headers.
static void plugin_callback(void *cls, struct MHD_Response *resp, int status)
Plugin result callback.
struct MHD_Response * response
static void run_mhd_now()
Run MHD now, we have extra data ready for the callback.
static char * plugin_name
Name of our plugin.
#define GNUNET_free(ptr)
Wrapper around free.
static MHD_RESULT post_data_iter(void *cls, enum MHD_ValueKind kind, const char *key, const char *filename, const char *content_type, const char *transfer_encoding, const char *data, uint64_t off, size_t size)
Here is the call graph for this function:
Here is the caller graph for this function:

◆ mhd_completed_cb()

static void mhd_completed_cb ( void *  cls,
struct MHD_Connection *  connection,
void **  con_cls,
enum MHD_RequestTerminationCode  toe 
)
static

Function called when MHD decides that we are done with a connection.

Parameters
clsNULL
connectionconnection handle
con_clsvalue as set by the last call to the MHD_AccessHandlerCallback, should be our handle
toereason for request termination (ignored)

Definition at line 534 of file gnunet-rest-server.c.

References GNUNET_ERROR_TYPE_ERROR, and GNUNET_log.

Referenced by run().

538 {
539  if (MHD_REQUEST_TERMINATED_COMPLETED_OK != toe)
541  "MHD encountered error handling request: %d\n",
542  toe);
543 }
#define GNUNET_log(kind,...)
Here is the caller graph for this function:

◆ kill_httpd()

static void kill_httpd ( )
static

Kill the MHD daemon.

Definition at line 550 of file gnunet-rest-server.c.

References GNUNET_NETWORK_socket_close(), GNUNET_SCHEDULER_cancel(), and httpd.

Referenced by do_shutdown(), and schedule_httpd().

551 {
552  if (NULL != httpd)
553  {
554  MHD_stop_daemon (httpd);
555  httpd = NULL;
556  }
557  if (NULL != httpd_task)
558  {
560  httpd_task = NULL;
561  }
562  if (NULL != ltask4)
563  {
565  ltask4 = NULL;
566  }
567  if (NULL != ltask6)
568  {
570  ltask6 = NULL;
571  }
572 
573  if (NULL != lsock4)
574  {
576  lsock4 = NULL;
577  }
578  if (NULL != lsock6)
579  {
581  lsock6 = NULL;
582  }
583 }
static struct GNUNET_SCHEDULER_Task * httpd_task
The task ID.
static struct GNUNET_NETWORK_Handle * lsock4
The listen socket of the service for IPv4.
static struct GNUNET_SCHEDULER_Task * ltask6
The listen task ID for IPv6.
static struct GNUNET_NETWORK_Handle * lsock6
The listen socket of the service for IPv6.
static struct GNUNET_SCHEDULER_Task * ltask4
The listen task ID for IPv4.
static struct MHD_Daemon * httpd
Daemon for HTTP.
int GNUNET_NETWORK_socket_close(struct GNUNET_NETWORK_Handle *desc)
Close a socket.
Definition: network.c:560
void * GNUNET_SCHEDULER_cancel(struct GNUNET_SCHEDULER_Task *task)
Cancel the task with the specified identifier.
Definition: scheduler.c:972
Here is the call graph for this function:
Here is the caller graph for this function:

◆ schedule_httpd()

static void schedule_httpd ( )
static

Schedule MHD.

This function should be called initially when an MHD is first getting its client socket, and will then automatically always be called later whenever there is work to be done.

Parameters
hdthe daemon to schedule

Definition at line 594 of file gnunet-rest-server.c.

References do_httpd(), GNUNET_NETWORK_fdset_copy_native(), GNUNET_NETWORK_fdset_create(), GNUNET_NETWORK_fdset_destroy(), GNUNET_SCHEDULER_add_select(), GNUNET_SCHEDULER_cancel(), GNUNET_SCHEDULER_PRIORITY_DEFAULT, GNUNET_TIME_UNIT_FOREVER_REL, httpd, kill_httpd(), GNUNET_TIME_Relative::rel_value_us, and timeout.

Referenced by do_accept(), and do_httpd().

595 {
596  fd_set rs;
597  fd_set ws;
598  fd_set es;
599  struct GNUNET_NETWORK_FDSet *wrs;
600  struct GNUNET_NETWORK_FDSet *wws;
601  int max;
602  int haveto;
603  MHD_UNSIGNED_LONG_LONG timeout;
604  struct GNUNET_TIME_Relative tv;
605 
606  FD_ZERO (&rs);
607  FD_ZERO (&ws);
608  FD_ZERO (&es);
609  max = -1;
610  if (MHD_YES != MHD_get_fdset (httpd, &rs, &ws, &es, &max))
611  {
612  kill_httpd ();
613  return;
614  }
615  haveto = MHD_get_timeout (httpd, &timeout);
616  if (MHD_YES == haveto)
617  tv.rel_value_us = (uint64_t) timeout * 1000LL;
618  else
620  if (-1 != max)
621  {
624  GNUNET_NETWORK_fdset_copy_native (wrs, &rs, max + 1);
625  GNUNET_NETWORK_fdset_copy_native (wws, &ws, max + 1);
626  }
627  else
628  {
629  wrs = NULL;
630  wws = NULL;
631  }
632  if (NULL != httpd_task)
633  {
635  httpd_task = NULL;
636  }
637  if ((MHD_YES == haveto) || (-1 != max))
638  {
640  tv,
641  wrs,
642  wws,
643  &do_httpd,
644  NULL);
645  }
646  if (NULL != wrs)
648  if (NULL != wws)
650 }
static struct GNUNET_SCHEDULER_Task * httpd_task
The task ID.
static void kill_httpd()
Kill the MHD daemon.
void GNUNET_NETWORK_fdset_copy_native(struct GNUNET_NETWORK_FDSet *to, const fd_set *from, int nfds)
Copy a native fd set into the GNUnet representation.
Definition: network.c:1120
void GNUNET_NETWORK_fdset_destroy(struct GNUNET_NETWORK_FDSet *fds)
Releases the associated memory of an fd set.
Definition: network.c:1266
struct GNUNET_NETWORK_FDSet * GNUNET_NETWORK_fdset_create(void)
Creates an fd set.
Definition: network.c:1250
static struct GNUNET_TIME_Relative timeout
Desired timeout for the lookup (default is no timeout).
Definition: gnunet-abd.c:61
collection of IO descriptors
struct GNUNET_SCHEDULER_Task * GNUNET_SCHEDULER_add_select(enum GNUNET_SCHEDULER_Priority prio, struct GNUNET_TIME_Relative delay, const struct GNUNET_NETWORK_FDSet *rs, const struct GNUNET_NETWORK_FDSet *ws, GNUNET_SCHEDULER_TaskCallback task, void *task_cls)
Schedule a new task to be run with a specified delay or when any of the specified file descriptor set...
Definition: scheduler.c:1841
#define GNUNET_TIME_UNIT_FOREVER_REL
Constant used to specify "forever".
static void do_httpd(void *cls)
Task run whenever HTTP server operations are pending.
static struct MHD_Daemon * httpd
Daemon for HTTP.
Run with the default priority (normal P2P operations).
Time for relative time used by GNUnet, in microseconds.
void * GNUNET_SCHEDULER_cancel(struct GNUNET_SCHEDULER_Task *task)
Cancel the task with the specified identifier.
Definition: scheduler.c:972
Here is the call graph for this function:
Here is the caller graph for this function:

◆ do_accept()

static void do_accept ( void *  cls)
static

Accept new incoming connections.

Parameters
clsthe closure with the lsock4 or lsock6
tcthe scheduler context

Definition at line 674 of file gnunet-rest-server.c.

References _, GNUNET_NETWORK_Handle::fd, GNUNET_assert, GNUNET_ERROR_TYPE_DEBUG, GNUNET_ERROR_TYPE_ERROR, GNUNET_ERROR_TYPE_WARNING, GNUNET_free, GNUNET_log, GNUNET_log_strerror, GNUNET_NETWORK_get_addr(), GNUNET_NETWORK_get_addrlen(), GNUNET_NETWORK_get_fd(), GNUNET_NETWORK_socket_accept(), GNUNET_SCHEDULER_add_read_net(), GNUNET_TIME_UNIT_FOREVER_REL, httpd, len, and schedule_httpd().

Referenced by run().

675 {
676  struct GNUNET_NETWORK_Handle *lsock = cls;
677  struct GNUNET_NETWORK_Handle *s;
678  int fd;
679  const struct sockaddr *addr;
680  socklen_t len;
681 
682  GNUNET_assert (NULL != lsock);
683  if (lsock == lsock4)
684  {
686  lsock,
687  &do_accept,
688  lsock);
689  }
690  else if (lsock == lsock6)
691  {
693  lsock,
694  &do_accept,
695  lsock);
696  }
697  else
698  GNUNET_assert (0);
699  s = GNUNET_NETWORK_socket_accept (lsock, NULL, NULL);
700  if (NULL == s)
701  {
703  return;
704  }
706  "Got an inbound connection, waiting for data\n");
707  fd = GNUNET_NETWORK_get_fd (s);
708  addr = GNUNET_NETWORK_get_addr (s);
709  len = GNUNET_NETWORK_get_addrlen (s);
710  if (MHD_YES != MHD_add_connection (httpd, fd, addr, len))
711  {
713  _ ("Failed to pass client to MHD\n"));
714  return;
715  }
716  GNUNET_free (s);
717  schedule_httpd ();
718 }
int GNUNET_NETWORK_get_fd(const struct GNUNET_NETWORK_Handle *desc)
Return file descriptor for this network handle.
Definition: network.c:1080
struct sockaddr * GNUNET_NETWORK_get_addr(const struct GNUNET_NETWORK_Handle *desc)
Return the sockaddr for this network handle.
Definition: network.c:1093
socklen_t GNUNET_NETWORK_get_addrlen(const struct GNUNET_NETWORK_Handle *desc)
Return sockaddr length for this network handle.
Definition: network.c:1106
#define GNUNET_assert(cond)
Use this for fatal errors that cannot be handled.
static void do_accept(void *cls)
Accept new incoming connections.
#define _(String)
GNU gettext support macro.
Definition: platform.h:184
struct GNUNET_NETWORK_Handle * GNUNET_NETWORK_socket_accept(const struct GNUNET_NETWORK_Handle *desc, struct sockaddr *address, socklen_t *address_len)
Accept a new connection on a socket.
Definition: network.c:430
#define GNUNET_log_strerror(level, cmd)
Log an error message at log-level &#39;level&#39; that indicates a failure of the command &#39;cmd&#39; with the mess...
static struct GNUNET_NETWORK_Handle * lsock4
The listen socket of the service for IPv4.
static struct GNUNET_SCHEDULER_Task * ltask6
The listen task ID for IPv6.
#define GNUNET_TIME_UNIT_FOREVER_REL
Constant used to specify "forever".
static struct GNUNET_NETWORK_Handle * lsock6
The listen socket of the service for IPv6.
static struct GNUNET_SCHEDULER_Task * ltask4
The listen task ID for IPv4.
static void schedule_httpd()
Schedule MHD.
#define GNUNET_log(kind,...)
static struct MHD_Daemon * httpd
Daemon for HTTP.
handle to a socket
Definition: network.c:52
struct GNUNET_SCHEDULER_Task * GNUNET_SCHEDULER_add_read_net(struct GNUNET_TIME_Relative delay, struct GNUNET_NETWORK_Handle *rfd, GNUNET_SCHEDULER_TaskCallback task, void *task_cls)
Schedule a new task to be run with a specified delay or when the specified file descriptor is ready f...
Definition: scheduler.c:1517
#define GNUNET_free(ptr)
Wrapper around free.
uint16_t len
length of data (which is always a uint32_t, but presumably this can be used to specify that fewer byt...
Here is the call graph for this function:
Here is the caller graph for this function:

◆ do_shutdown()

static void do_shutdown ( void *  cls)
static

Task run on shutdown.

Parameters
clsclosure

Definition at line 727 of file gnunet-rest-server.c.

References allow_credentials, allow_headers, GNUNET_ERROR_TYPE_INFO, GNUNET_free, GNUNET_log, and kill_httpd().

Referenced by run().

728 {
729  GNUNET_log (GNUNET_ERROR_TYPE_INFO, "Shutting down...\n");
730  kill_httpd ();
733 }
static char * allow_headers
Allowed Headers (CORS)
static void kill_httpd()
Kill the MHD daemon.
static char * allow_credentials
Allowed Credentials (CORS)
#define GNUNET_log(kind,...)
#define GNUNET_free(ptr)
Wrapper around free.
Here is the call graph for this function:
Here is the caller graph for this function:

◆ bind_v4()

static struct GNUNET_NETWORK_Handle* bind_v4 ( )
static

Create an IPv4 listen socket bound to our port.

Returns
NULL on error

Definition at line 742 of file gnunet-rest-server.c.

References address, GNUNET_NETWORK_socket_bind(), GNUNET_NETWORK_socket_close(), GNUNET_NETWORK_socket_create(), GNUNET_OK, ls, and port.

Referenced by run().

743 {
744  struct GNUNET_NETWORK_Handle *ls;
745  struct sockaddr_in sa4;
746  int eno;
747 
748  memset (&sa4, 0, sizeof(sa4));
749  sa4.sin_family = AF_INET;
750  sa4.sin_port = htons (port);
751  sa4.sin_addr.s_addr = address;
752 #if HAVE_SOCKADDR_IN_SIN_LEN
753  sa4.sin_len = sizeof(sa4);
754 #endif
755  ls = GNUNET_NETWORK_socket_create (AF_INET, SOCK_STREAM, 0);
756  if (NULL == ls)
757  return NULL;
759  (const struct sockaddr *) &sa4,
760  sizeof(sa4)))
761  {
762  eno = errno;
764  errno = eno;
765  return NULL;
766  }
767  return ls;
768 }
static unsigned long long port
The port the service is running on (default 7776)
int GNUNET_NETWORK_socket_bind(struct GNUNET_NETWORK_Handle *desc, const struct sockaddr *address, socklen_t address_len)
Bind a socket to a particular address.
Definition: network.c:485
static in_addr_t address
The address to bind to.
static struct GNUNET_NETWORK_Handle * ls
Listen socket for STUN processing.
Definition: gnunet-nat.c:85
handle to a socket
Definition: network.c:52
int GNUNET_NETWORK_socket_close(struct GNUNET_NETWORK_Handle *desc)
Close a socket.
Definition: network.c:560
struct GNUNET_NETWORK_Handle * GNUNET_NETWORK_socket_create(int domain, int type, int protocol)
Create a new socket.
Definition: network.c:912
Here is the call graph for this function:
Here is the caller graph for this function:

◆ bind_v6()

static struct GNUNET_NETWORK_Handle* bind_v6 ( )
static

Create an IPv6 listen socket bound to our port.

Returns
NULL on error

Definition at line 777 of file gnunet-rest-server.c.

References address6, GNUNET_NETWORK_socket_bind(), GNUNET_NETWORK_socket_close(), GNUNET_NETWORK_socket_create(), GNUNET_OK, ls, and port.

Referenced by run().

778 {
779  struct GNUNET_NETWORK_Handle *ls;
780  struct sockaddr_in6 sa6;
781  int eno;
782 
783  memset (&sa6, 0, sizeof(sa6));
784  sa6.sin6_family = AF_INET6;
785  sa6.sin6_port = htons (port);
786  sa6.sin6_addr = address6;
787 #if HAVE_SOCKADDR_IN_SIN_LEN
788  sa6.sin6_len = sizeof(sa6);
789 #endif
790  ls = GNUNET_NETWORK_socket_create (AF_INET6, SOCK_STREAM, 0);
791  if (NULL == ls)
792  return NULL;
794  (const struct sockaddr *) &sa6,
795  sizeof(sa6)))
796  {
797  eno = errno;
799  errno = eno;
800  return NULL;
801  }
802  return ls;
803 }
static unsigned long long port
The port the service is running on (default 7776)
static struct in6_addr address6
The IPv6 address to bind to.
int GNUNET_NETWORK_socket_bind(struct GNUNET_NETWORK_Handle *desc, const struct sockaddr *address, socklen_t address_len)
Bind a socket to a particular address.
Definition: network.c:485
static struct GNUNET_NETWORK_Handle * ls
Listen socket for STUN processing.
Definition: gnunet-nat.c:85
handle to a socket
Definition: network.c:52
int GNUNET_NETWORK_socket_close(struct GNUNET_NETWORK_Handle *desc)
Close a socket.
Definition: network.c:560
struct GNUNET_NETWORK_Handle * GNUNET_NETWORK_socket_create(int domain, int type, int protocol)
Create a new socket.
Definition: network.c:912
Here is the call graph for this function:
Here is the caller graph for this function:

◆ load_plugin()

static void load_plugin ( void *  cls,
const char *  libname,
void *  lib_ret 
)
static

Callback for plugin load.

Parameters
clsNULL
libnamethe name of the library loaded
lib_retthe object returned by the plugin initializer

Definition at line 814 of file gnunet-rest-server.c.

References GNUNET_assert, GNUNET_CONTAINER_multihashmap_put(), GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_ONLY, GNUNET_CRYPTO_hash(), GNUNET_ERROR_TYPE_DEBUG, GNUNET_log, GNUNET_OK, GNUNET_REST_Plugin::name, and MhdConnectionHandle::plugin.

Referenced by run().

815 {
816  struct GNUNET_REST_Plugin *plugin = lib_ret;
817  struct GNUNET_HashCode key;
818 
819  if (NULL == lib_ret)
820  {
822  "Could not load plugin `%s'\n",
823  libname);
824  return;
825  }
826  GNUNET_assert (1 < strlen (plugin->name));
827  GNUNET_assert ('/' == *plugin->name);
828  GNUNET_CRYPTO_hash (plugin->name + 1, strlen (plugin->name + 1), &key);
830  plugin_map,
831  &key,
832  plugin,
834  {
836  "Could not load add plugin `%s'\n",
837  libname);
838  return;
839  }
840  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Loaded plugin `%s'\n", libname);
841 }
#define GNUNET_assert(cond)
Use this for fatal errors that cannot be handled.
struct returned by the initialization function of the plugin
void GNUNET_CRYPTO_hash(const void *block, size_t size, struct GNUNET_HashCode *ret)
Compute hash of a given block.
Definition: crypto_hash.c:48
char * name
Plugin name.
A 512-bit hashcode.
static char * plugin
Solver plugin name as string.
There must only be one value per key; storing a value should fail if a value under the same key alrea...
struct GNUNET_HashCode key
The key used in the DHT.
static struct GNUNET_CONTAINER_MultiHashMap * plugin_map
Map of loaded plugins.
int GNUNET_CONTAINER_multihashmap_put(struct GNUNET_CONTAINER_MultiHashMap *map, const struct GNUNET_HashCode *key, void *value, enum GNUNET_CONTAINER_MultiHashMapOption opt)
Store a key-value pair in the map.
#define GNUNET_log(kind,...)
Here is the call graph for this function:
Here is the caller graph for this function:

◆ run()

static void run ( void *  cls,
char *const *  args,
const char *  cfgfile,
const struct GNUNET_CONFIGURATION_Handle c 
)
static

Main function that will be run.

Parameters
clsclosure
argsremaining command-line arguments
cfgfilename of the configuration file used (for saving, can be NULL)
cconfiguration

Definition at line 853 of file gnunet-rest-server.c.

References address, address6, allow_credentials, allow_headers, allow_origins, bind_v4(), bind_v6(), create_response(), do_accept(), do_shutdown(), echo_origin, GNUNET_CONFIGURATION_get_value_number(), GNUNET_CONFIGURATION_get_value_string(), GNUNET_CONFIGURATION_get_value_yesno(), GNUNET_CONTAINER_multihashmap_create(), GNUNET_ERROR_TYPE_DEBUG, GNUNET_ERROR_TYPE_ERROR, GNUNET_ERROR_TYPE_INFO, GNUNET_free, GNUNET_log, GNUNET_log_strerror, GNUNET_NETWORK_socket_close(), GNUNET_NETWORK_socket_listen(), GNUNET_NO, GNUNET_OK, GNUNET_PLUGIN_load_all(), GNUNET_REST_SERVICE_PORT, GNUNET_SCHEDULER_add_read_net(), GNUNET_SCHEDULER_add_shutdown(), GNUNET_SCHEDULER_shutdown(), GNUNET_TIME_UNIT_FOREVER_REL, httpd, load_plugin(), mhd_completed_cb(), and port.

Referenced by main().

857 {
858  char *addr_str;
859 
860  cfg = c;
862 
863  /* Get port to bind to */
864  if (GNUNET_OK !=
865  GNUNET_CONFIGURATION_get_value_number (cfg, "rest", "HTTP_PORT", &port))
866  {
867  // No address specified
868  GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "Using default port...\n");
870  }
871 
872  /* Get address to bind to */
873  if (GNUNET_OK !=
874  GNUNET_CONFIGURATION_get_value_string (cfg, "rest", "BIND_TO", &addr_str))
875  {
876  // No address specified
877  GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "Don't know what to bind to...\n");
879  return;
880  }
881  if (1 != inet_pton (AF_INET, addr_str, &address))
882  {
884  "Unable to parse address %s\n",
885  addr_str);
886  GNUNET_free (addr_str);
888  return;
889  }
890  GNUNET_free (addr_str);
891  /* Get address to bind to */
893  "rest",
894  "BIND_TO6",
895  &addr_str))
896  {
897  // No address specified
898  GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "Don't know what to bind6 to...\n");
900  return;
901  }
902  if (1 != inet_pton (AF_INET6, addr_str, &address6))
903  {
905  "Unable to parse IPv6 address %s\n",
906  addr_str);
907  GNUNET_free (addr_str);
909  return;
910  }
911  GNUNET_free (addr_str);
912 
913 
914  /* Get CORS data from cfg */
915  echo_origin =
917  "rest",
918  "REST_ECHO_ORIGIN_WEBEXT");
919  allow_origins = NULL;
921  "rest",
922  "REST_ALLOW_ORIGIN",
923  &allow_origins))
924  {
926  "No CORS Access-Control-Allow-Origin header will be sent...\n");
927  }
928  if (GNUNET_OK !=
930  "rest",
931  "REST_ALLOW_CREDENTIALS",
933  {
934  // No origin specified
936  "No CORS Credential Header will be sent...\n");
937  }
938 
940  "rest",
941  "REST_ALLOW_HEADERS",
942  &allow_headers))
943  {
944  // No origin specified
946  "No CORS Access-Control-Allow-Headers Header will be sent...\n");
947  }
948 
949  /* Open listen socket proxy */
950  lsock6 = bind_v6 ();
951  if (NULL == lsock6)
952  {
954  }
955  else
956  {
958  {
961  lsock6 = NULL;
962  }
963  else
964  {
966  lsock6,
967  &do_accept,
968  lsock6);
969  }
970  }
971  lsock4 = bind_v4 ();
972  if (NULL == lsock4)
973  {
975  }
976  else
977  {
979  {
982  lsock4 = NULL;
983  }
984  else
985  {
987  lsock4,
988  &do_accept,
989  lsock4);
990  }
991  }
992  if ((NULL == lsock4) && (NULL == lsock6))
993  {
995  return;
996  }
997  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Service listens on port %llu\n", port);
998  httpd = MHD_start_daemon (MHD_USE_DEBUG | MHD_USE_NO_LISTEN_SOCKET
999  | MHD_ALLOW_SUSPEND_RESUME,
1000  0,
1001  NULL,
1002  NULL,
1003  &create_response,
1004  NULL,
1005  MHD_OPTION_CONNECTION_TIMEOUT,
1006  (unsigned int) 16,
1007  MHD_OPTION_NOTIFY_COMPLETED,
1009  NULL,
1010  MHD_OPTION_END);
1011  if (NULL == httpd)
1012  {
1014  return;
1015  }
1016  /* Load plugins */
1017  GNUNET_PLUGIN_load_all ("libgnunet_plugin_rest",
1018  (void *) cfg,
1019  &load_plugin,
1020  NULL);
1022 }
int GNUNET_NETWORK_socket_listen(const struct GNUNET_NETWORK_Handle *desc, int backlog)
Listen on a socket.
Definition: network.c:708
static char * allow_headers
Allowed Headers (CORS)
static unsigned long long port
The port the service is running on (default 7776)
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 void load_plugin(void *cls, const char *libname, void *lib_ret)
Callback for plugin load.
#define GNUNET_REST_SERVICE_PORT
Default Socks5 listen port.
struct GNUNET_SCHEDULER_Task * GNUNET_SCHEDULER_add_shutdown(GNUNET_SCHEDULER_TaskCallback task, void *task_cls)
Schedule a new task to be run on shutdown, that is when a CTRL-C signal is received, or when GNUNET_SCHEDULER_shutdown() is being invoked.
Definition: scheduler.c:1331
static void do_accept(void *cls)
Accept new incoming connections.
static struct in6_addr address6
The IPv6 address to bind to.
void GNUNET_SCHEDULER_shutdown(void)
Request the shutdown of a scheduler.
Definition: scheduler.c:531
static void mhd_completed_cb(void *cls, struct MHD_Connection *connection, void **con_cls, enum MHD_RequestTerminationCode toe)
Function called when MHD decides that we are done with a connection.
#define GNUNET_log_strerror(level, cmd)
Log an error message at log-level &#39;level&#39; that indicates a failure of the command &#39;cmd&#39; with the mess...
static MHD_RESULT create_response(void *cls, struct MHD_Connection *con, const char *url, const char *meth, const char *ver, const char *upload_data, size_t *upload_data_size, void **con_cls)
Main MHD callback for handling requests.
static int echo_origin
Echo request Origin in CORS.
static struct GNUNET_NETWORK_Handle * lsock4
The listen socket of the service for IPv4.
static struct GNUNET_SCHEDULER_Task * ltask6
The listen task ID for IPv6.
static char * allow_origins
Allowed Origins (CORS)
#define GNUNET_TIME_UNIT_FOREVER_REL
Constant used to specify "forever".
static void do_shutdown(void *cls)
Task run on shutdown.
static in_addr_t address
The address to bind to.
static struct GNUNET_NETWORK_Handle * lsock6
The listen socket of the service for IPv6.
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.
static struct GNUNET_SCHEDULER_Task * ltask4
The listen task ID for IPv4.
void GNUNET_PLUGIN_load_all(const char *basename, void *arg, GNUNET_PLUGIN_LoaderCallback cb, void *cb_cls)
Load all compatible plugins with the given base name.
Definition: plugin.c:372
static char * allow_credentials
Allowed Credentials (CORS)
static struct GNUNET_CONTAINER_MultiHashMap * plugin_map
Map of loaded plugins.
static struct GNUNET_NETWORK_Handle * bind_v6()
Create an IPv6 listen socket bound to our port.
#define GNUNET_log(kind,...)
static struct MHD_Daemon * httpd
Daemon for HTTP.
struct GNUNET_CONTAINER_MultiHashMap * GNUNET_CONTAINER_multihashmap_create(unsigned int len, int do_not_copy_keys)
Create a multi hash map.
struct GNUNET_SCHEDULER_Task * GNUNET_SCHEDULER_add_read_net(struct GNUNET_TIME_Relative delay, struct GNUNET_NETWORK_Handle *rfd, GNUNET_SCHEDULER_TaskCallback task, void *task_cls)
Schedule a new task to be run with a specified delay or when the specified file descriptor is ready f...
Definition: scheduler.c:1517
int GNUNET_CONFIGURATION_get_value_yesno(const struct GNUNET_CONFIGURATION_Handle *cfg, const char *section, const char *option)
Get a configuration value that should be in a set of "YES" or "NO".
static const struct GNUNET_CONFIGURATION_Handle * cfg
Our configuration.
int GNUNET_NETWORK_socket_close(struct GNUNET_NETWORK_Handle *desc)
Close a socket.
Definition: network.c:560
#define GNUNET_free(ptr)
Wrapper around free.
static struct GNUNET_NETWORK_Handle * bind_v4()
Create an IPv4 listen socket bound to our port.
Here is the call graph for this function:
Here is the caller graph for this function:

◆ main()

int main ( int  argc,
char *const *  argv 
)

The main function for gnunet-rest-service.

Parameters
argcnumber of arguments from the cli
argvcommand line arguments
Returns
0 ok, 1 on error

Definition at line 1035 of file gnunet-rest-server.c.

References _, failure_response, GNUNET_free_nz, GNUNET_GETOPT_OPTION_END, GNUNET_log_setup(), GNUNET_OK, GNUNET_PROGRAM_run(), GNUNET_STRINGS_get_utf8_args(), ret, and run().

1036 {
1039  static const char *err_page = "{}";
1040  int ret;
1041 
1042  if (GNUNET_OK != GNUNET_STRINGS_get_utf8_args (argc, argv, &argc, &argv))
1043  return 2;
1044  GNUNET_log_setup ("gnunet-rest-server", "WARNING", NULL);
1045  failure_response = MHD_create_response_from_buffer (strlen (err_page),
1046  (void *) err_page,
1047  MHD_RESPMEM_PERSISTENT);
1048  ret = (GNUNET_OK == GNUNET_PROGRAM_run (argc,
1049  argv,
1050  "gnunet-rest-server",
1051  _ ("GNUnet REST server"),
1052  options,
1053  &run,
1054  NULL))
1055  ? 0
1056  : 1;
1057  MHD_destroy_response (failure_response);
1058  GNUNET_free_nz ((char *) argv);
1059  return ret;
1060 }
static struct MHD_Response * failure_response
Response we return on failures.
struct GNUNET_GETOPT_CommandLineOption options[]
Definition: 002.c:5
int GNUNET_STRINGS_get_utf8_args(int argc, char *const *argv, int *u8argc, char *const **u8argv)
Returns utf-8 encoded arguments.
Definition: strings.c:1457
static int ret
Return value of the commandline.
Definition: gnunet-abd.c:81
Definition of a command line option.
struct GNUNET_GETOPT_CommandLineOption GNUNET_GETOPT_OPTION_END
Definition: 002.c:13
#define _(String)
GNU gettext support macro.
Definition: platform.h:184
#define GNUNET_free_nz(ptr)
Wrapper around free.
int GNUNET_PROGRAM_run(int argc, char *const *argv, const char *binaryName, const char *binaryHelp, const struct GNUNET_GETOPT_CommandLineOption *options, GNUNET_PROGRAM_Main task, void *task_cls)
Run a standard GNUnet command startup sequence (initialize loggers and configuration, parse options).
Definition: program.c:367
int GNUNET_log_setup(const char *comp, const char *loglevel, const char *logfile)
Setup logging.
static void run(void *cls, char *const *args, const char *cfgfile, const struct GNUNET_CONFIGURATION_Handle *c)
Main function that will be run.
Here is the call graph for this function:

Variable Documentation

◆ httpd_task

struct GNUNET_SCHEDULER_Task* httpd_task
static

The task ID.

Definition at line 65 of file gnunet-rest-server.c.

◆ address

in_addr_t address
static

The address to bind to.

Definition at line 70 of file gnunet-rest-server.c.

Referenced by bind_v4(), and run().

◆ address6

struct in6_addr address6
static

The IPv6 address to bind to.

Definition at line 75 of file gnunet-rest-server.c.

Referenced by bind_v6(), and run().

◆ port

unsigned long long port = 7776
static

The port the service is running on (default 7776)

Definition at line 80 of file gnunet-rest-server.c.

Referenced by bind_v4(), bind_v6(), and run().

◆ lsock4

struct GNUNET_NETWORK_Handle* lsock4
static

The listen socket of the service for IPv4.

Definition at line 85 of file gnunet-rest-server.c.

◆ lsock6

struct GNUNET_NETWORK_Handle* lsock6
static

The listen socket of the service for IPv6.

Definition at line 90 of file gnunet-rest-server.c.

◆ ltask4

struct GNUNET_SCHEDULER_Task* ltask4
static

The listen task ID for IPv4.

Definition at line 95 of file gnunet-rest-server.c.

◆ ltask6

struct GNUNET_SCHEDULER_Task* ltask6
static

The listen task ID for IPv6.

Definition at line 100 of file gnunet-rest-server.c.

◆ httpd

struct MHD_Daemon* httpd
static

Daemon for HTTP.

Definition at line 105 of file gnunet-rest-server.c.

Referenced by do_accept(), do_httpd(), kill_httpd(), run(), and schedule_httpd().

◆ failure_response

struct MHD_Response* failure_response
static

Response we return on failures.

Definition at line 110 of file gnunet-rest-server.c.

Referenced by create_response(), and main().

◆ cfg

const struct GNUNET_CONFIGURATION_Handle* cfg
static

Our configuration.

Definition at line 115 of file gnunet-rest-server.c.

◆ plugin_map

struct GNUNET_CONTAINER_MultiHashMap* plugin_map
static

Map of loaded plugins.

Definition at line 120 of file gnunet-rest-server.c.

◆ echo_origin

int echo_origin
static

Echo request Origin in CORS.

Definition at line 125 of file gnunet-rest-server.c.

Referenced by create_response(), and run().

◆ allow_origins

char* allow_origins
static

Allowed Origins (CORS)

Definition at line 130 of file gnunet-rest-server.c.

Referenced by create_response(), and run().

◆ allow_headers

char* allow_headers
static

Allowed Headers (CORS)

Definition at line 135 of file gnunet-rest-server.c.

Referenced by create_response(), do_shutdown(), and run().

◆ allow_credentials

char* allow_credentials
static

Allowed Credentials (CORS)

Definition at line 140 of file gnunet-rest-server.c.

Referenced by create_response(), do_shutdown(), and run().