GNUnet  0.17.5
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  PluginListEntry
 A plugin list entry. More...
 
struct  MhdConnectionHandle
 MHD Connection handle. More...
 
struct  AcceptedRequest
 Accepted requests. 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 void cleanup_ar (struct AcceptedRequest *ar)
 
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 kill_httpd ()
 Kill the MHD daemon. More...
 
static void schedule_httpd ()
 Schedule MHD. More...
 
static void * mhd_log_callback (void *cls, const char *url, struct MHD_Connection *connection)
 Function called when MHD first processes an incoming connection. 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 mhd_connection_cb (void *cls, struct MHD_Connection *connection, void **con_cls, enum MHD_ConnectionNotificationCode cnc)
 Function called when MHD connection is opened or closed. 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 int echo_origin
 Echo request Origin in CORS. More...
 
static int basic_auth_enabled
 Do basic auth of user. More...
 
static char * basic_auth_secret
 Basic auth secret. More...
 
char cuser [LOGIN_NAME_MAX]
 User of the service. 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...
 
static struct PluginListEntryplugins_head
 Plugin list head. More...
 
static struct PluginListEntryplugins_tail
 Plugin list tail. More...
 
static struct AcceptedRequestreq_list_head
 AcceptedRequest list head. More...
 
static struct AcceptedRequestreq_list_tail
 AcceptedRequest list tail. 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.

◆ 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.

◆ GN_REST_STATE_PROCESSING

#define GN_REST_STATE_PROCESSING   1

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

Function Documentation

◆ do_httpd()

static void do_httpd ( void *  cls)
static

Task run whenever HTTP server operations are pending.

Parameters
clsNULL

Definition at line 896 of file gnunet-rest-server.c.

897 {
898  httpd_task = NULL;
899  MHD_run (httpd);
900  schedule_httpd ();
901 }
static struct MHD_Daemon * httpd
Daemon for HTTP.
static struct GNUNET_SCHEDULER_Task * httpd_task
The task ID.
static void schedule_httpd()
Schedule MHD.

References httpd, httpd_task, and schedule_httpd().

Referenced by run_mhd_now(), and schedule_httpd().

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◆ run_mhd_now()

static void run_mhd_now ( )
static

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

Definition at line 259 of file gnunet-rest-server.c.

260 {
261  if (NULL != httpd_task)
262  {
264  httpd_task = NULL;
265  }
267 }
static void do_httpd(void *cls)
Task run whenever HTTP server operations are pending.
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:1281
void * GNUNET_SCHEDULER_cancel(struct GNUNET_SCHEDULER_Task *task)
Cancel the task with the specified identifier.
Definition: scheduler.c:957

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

Referenced by create_response(), and plugin_callback().

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◆ 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 279 of file gnunet-rest-server.c.

280 {
281  struct MhdConnectionHandle *handle = cls;
282 
283  handle->status = status;
284  handle->response = resp;
285  MHD_resume_connection (handle->con);
286  run_mhd_now ();
287 }
static struct GNUNET_DNS_Handle * handle
Handle to transport service.
uint16_t status
See PRISM_STATUS_*-constants.
static void run_mhd_now()
Run MHD now, we have extra data ready for the callback.
MHD Connection handle.

References handle, run_mhd_now(), and status.

Referenced by create_response().

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◆ cleanup_url_map()

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

Definition at line 291 of file gnunet-rest-server.c.

292 {
293  GNUNET_free (value);
294  return GNUNET_YES;
295 }
static char * value
Value of the record to add/remove.
@ GNUNET_YES
#define GNUNET_free(ptr)
Wrapper around free.

References GNUNET_free, GNUNET_YES, and value.

Referenced by cleanup_handle().

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◆ cleanup_handle()

static void cleanup_handle ( struct MhdConnectionHandle handle)
static

Definition at line 298 of file gnunet-rest-server.c.

299 {
300  if (NULL != handle->response)
301  MHD_destroy_response (handle->response);
302  if (NULL != handle->data_handle)
303  {
304  if (NULL != handle->data_handle->header_param_map)
305  {
307  ->header_param_map,
309  NULL);
311  handle->data_handle->header_param_map);
312  }
313  if (NULL != handle->data_handle->url_param_map)
314  {
315  GNUNET_CONTAINER_multihashmap_iterate (handle->data_handle->url_param_map,
317  NULL);
319  handle->data_handle->url_param_map);
320  }
321  GNUNET_free (handle->data_handle);
322  }
324 }
static int cleanup_url_map(void *cls, const struct GNUNET_HashCode *key, void *value)
int GNUNET_CONTAINER_multihashmap_iterate(struct GNUNET_CONTAINER_MultiHashMap *map, GNUNET_CONTAINER_MulitHashMapIteratorCallback it, void *it_cls)
Iterate over all entries in the map.
void GNUNET_CONTAINER_multihashmap_destroy(struct GNUNET_CONTAINER_MultiHashMap *map)
Destroy a hash map.

References cleanup_url_map(), GNUNET_CONTAINER_multihashmap_destroy(), GNUNET_CONTAINER_multihashmap_iterate(), GNUNET_free, and handle.

Referenced by cleanup_ar(), and mhd_completed_cb().

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◆ cleanup_ar()

static void cleanup_ar ( struct AcceptedRequest ar)
static

Definition at line 327 of file gnunet-rest-server.c.

328 {
329  if (NULL != ar->con_handle)
330  {
332  }
333  if (GNUNET_YES == ar->socket_with_mhd)
334  {
336  }
337  else {
339  }
340  ar->sock = NULL;
343  ar);
344  GNUNET_free (ar);
345 }
static struct AcceptedRequest * req_list_head
AcceptedRequest list head.
static struct AcceptedRequest * req_list_tail
AcceptedRequest list tail.
static void cleanup_handle(struct MhdConnectionHandle *handle)
#define GNUNET_CONTAINER_DLL_remove(head, tail, element)
Remove an element from a DLL.
enum GNUNET_GenericReturnValue GNUNET_NETWORK_socket_close(struct GNUNET_NETWORK_Handle *desc)
Close a socket.
Definition: network.c:508
void GNUNET_NETWORK_socket_free_memory_only_(struct GNUNET_NETWORK_Handle *desc)
Only free memory of a socket, keep the file descriptor untouched.
Definition: network.c:570
struct MhdConnectionHandle * con_handle
Connection.
struct GNUNET_NETWORK_Handle * sock
Socket.

References cleanup_handle(), AcceptedRequest::con_handle, GNUNET_CONTAINER_DLL_remove, GNUNET_free, GNUNET_NETWORK_socket_close(), GNUNET_NETWORK_socket_free_memory_only_(), GNUNET_YES, req_list_head, req_list_tail, AcceptedRequest::sock, and AcceptedRequest::socket_with_mhd.

Referenced by mhd_connection_cb().

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◆ header_iterator()

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

Definition at line 348 of file gnunet-rest-server.c.

352 {
353  struct GNUNET_REST_RequestHandle *handle = cls;
354  struct GNUNET_HashCode hkey;
355  char *val;
356  char *lowerkey;
357 
358  lowerkey = GNUNET_strdup (key);
359  GNUNET_STRINGS_utf8_tolower (key, lowerkey);
360  GNUNET_CRYPTO_hash (lowerkey, strlen (lowerkey), &hkey);
361  GNUNET_asprintf (&val, "%s", value);
363  handle->header_param_map,
364  &hkey,
365  val,
367  {
369  "Could not load add header `%s'=%s\n",
370  lowerkey,
371  value);
372  }
373  GNUNET_free (lowerkey);
374  return MHD_YES;
375 }
struct GNUNET_HashCode key
The key used in the DHT.
void GNUNET_CRYPTO_hash(const void *block, size_t size, struct GNUNET_HashCode *ret)
Compute hash of a given block.
Definition: crypto_hash.c:41
enum GNUNET_GenericReturnValue 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.
@ GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_ONLY
There must only be one value per key; storing a value should fail if a value under the same key alrea...
#define GNUNET_log(kind,...)
@ GNUNET_OK
Definition: gnunet_common.h:99
@ GNUNET_ERROR_TYPE_ERROR
int int GNUNET_asprintf(char **buf, const char *format,...) __attribute__((format(printf
Like asprintf, just portable.
#define GNUNET_strdup(a)
Wrapper around GNUNET_xstrdup_.
enum GNUNET_GenericReturnValue GNUNET_STRINGS_utf8_tolower(const char *input, char *output)
Convert the utf-8 input string to lower case.
Definition: strings.c:450
A 512-bit hashcode.

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, key, and value.

Referenced by create_response().

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◆ url_iterator()

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

Definition at line 379 of file gnunet-rest-server.c.

383 {
384  struct GNUNET_REST_RequestHandle *handle = cls;
385  struct GNUNET_HashCode hkey;
386  char *val;
387 
388  GNUNET_CRYPTO_hash (key, strlen (key), &hkey);
389  GNUNET_asprintf (&val, "%s", value);
391  handle->url_param_map,
392  &hkey,
393  val,
395  {
397  "Could not load add url param `%s'=%s\n",
398  key,
399  value);
400  }
401  return MHD_YES;
402 }

References GNUNET_asprintf(), GNUNET_CONTAINER_multihashmap_put(), GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_ONLY, GNUNET_CRYPTO_hash(), GNUNET_ERROR_TYPE_ERROR, GNUNET_log, GNUNET_OK, handle, key, and value.

Referenced by create_response().

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◆ 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 406 of file gnunet-rest-server.c.

415 {
416  struct GNUNET_REST_RequestHandle *handle = cls;
417  struct GNUNET_HashCode hkey;
418  char *val;
419 
420  if (MHD_POSTDATA_KIND != kind)
421  return MHD_YES;
422 
423  GNUNET_CRYPTO_hash (key, strlen (key), &hkey);
424  val = GNUNET_CONTAINER_multihashmap_get (handle->url_param_map,
425  &hkey);
426  if (NULL == val)
427  {
428  val = GNUNET_malloc (65536);
430  handle->url_param_map,
431  &hkey,
432  val,
434  {
436  "Could not add url param '%s'\n",
437  key);
438  GNUNET_free (val);
439  }
440  }
441  memcpy (val + off, data, size);
442  return MHD_YES;
443 }
uint32_t data
The data 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.
#define GNUNET_malloc(size)
Wrapper around malloc.
static unsigned int size
Size of the "table".
Definition: peer.c:67

References data, GNUNET_CONTAINER_multihashmap_get(), GNUNET_CONTAINER_multihashmap_put(), GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_ONLY, GNUNET_CRYPTO_hash(), GNUNET_ERROR_TYPE_ERROR, GNUNET_free, GNUNET_log, GNUNET_malloc, GNUNET_OK, handle, key, and size.

Referenced by create_response().

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◆ 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 ("HTTP/1.1" for version 1.1, etc.)
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

Request not handled

Definition at line 472 of file gnunet-rest-server.c.

480 {
481  char *origin;
482  char *pw;
483  char *user;
484  struct AcceptedRequest *ar;
485  struct GNUNET_HashCode key;
486  struct MhdConnectionHandle *con_handle;
487  struct GNUNET_REST_RequestHandle *rest_conndata_handle;
488  struct PluginListEntry *ple;
489 
490  ar = *con_cls;
491  if (NULL == ar)
492  {
493  GNUNET_break (0);
494  return MHD_NO;
495  }
496 
497  if (NULL == ar->con_handle)
498  {
499  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "New connection %s\n", url);
500  con_handle = GNUNET_new (struct MhdConnectionHandle);
501  con_handle->con = con;
502  con_handle->state = GN_REST_STATE_INIT;
503  ar->con_handle = con_handle;
504  return MHD_YES;
505  }
506  con_handle = ar->con_handle;
507  if (GN_REST_STATE_INIT == con_handle->state)
508  {
509  rest_conndata_handle = GNUNET_new (struct GNUNET_REST_RequestHandle);
510  rest_conndata_handle->method = meth;
511  rest_conndata_handle->url = url;
512  rest_conndata_handle->data = upload_data;
513  rest_conndata_handle->data_size = *upload_data_size;
514  rest_conndata_handle->url_param_map =
516  rest_conndata_handle->header_param_map =
518  con_handle->data_handle = rest_conndata_handle;
519  MHD_get_connection_values (con,
520  MHD_GET_ARGUMENT_KIND,
521  (MHD_KeyValueIterator) & url_iterator,
522  rest_conndata_handle);
523  MHD_get_connection_values (con,
524  MHD_HEADER_KIND,
525  (MHD_KeyValueIterator) & header_iterator,
526  rest_conndata_handle);
528  {
529  pw = NULL;
530  user = MHD_basic_auth_get_username_password (con, &pw);
531  if ((NULL == user) ||
532  (0 != strcmp (user, cuser)))
533  {
535  "Unknown user %s\n", user);
536  MHD_queue_basic_auth_fail_response (con, "gnunet", failure_response);
537  return MHD_YES;
538  }
539  if ((NULL == pw) ||
540  (0 != strcmp (pw, basic_auth_secret)))
541  {
543  "Password incorrect\n");
544  MHD_queue_basic_auth_fail_response (con, "gnunet", failure_response);
545  GNUNET_free (pw);
546  return MHD_YES;
547  }
548  GNUNET_free (pw);
549  }
550 
551  con_handle->pp = MHD_create_post_processor (con,
552  65536,
554  rest_conndata_handle);
555  if (*upload_data_size)
556  {
557  MHD_post_process (con_handle->pp, upload_data, *upload_data_size);
558  }
559  MHD_destroy_post_processor (con_handle->pp);
560 
561  con_handle->state = GN_REST_STATE_PROCESSING;
562  for (ple = plugins_head; NULL != ple; ple = ple->next)
563  {
564  if (GNUNET_YES == ple->plugin->process_request (rest_conndata_handle,
566  con_handle))
567  break; /* Request handled */
568  }
569  if (NULL == ple)
570  {
572  MHD_queue_response (con, MHD_HTTP_NOT_FOUND, failure_response);
573  }
574  *upload_data_size = 0;
575  run_mhd_now ();
576  return MHD_YES;
577  }
578  if (NULL == con_handle->response)
579  {
580  // Suspend connection until plugin is done
581  MHD_suspend_connection (con_handle->con);
582  return MHD_YES;
583  }
584  // MHD_resume_connection (con_handle->con);
586  "Queueing response from plugin with MHD\n");
587  // Handle Preflights for extensions
588  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Checking origin\n");
589  GNUNET_CRYPTO_hash ("origin", strlen ("origin"), &key);
590  origin = GNUNET_CONTAINER_multihashmap_get (con_handle->data_handle
592  &key);
593  if (NULL != origin)
594  {
595  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Origin: %s\n", origin);
596  // Only echo for browser plugins
597  if (GNUNET_YES == echo_origin)
598  {
599  if ((0 ==
600  strncmp ("moz-extension://", origin, strlen ("moz-extension://"))) ||
601  (0 == strncmp ("chrome-extension://",
602  origin,
603  strlen ("chrome-extension://"))))
604  {
605  MHD_add_response_header (con_handle->response,
606  MHD_HTTP_HEADER_ACCESS_CONTROL_ALLOW_ORIGIN,
607  origin);
608  }
609  }
610  if (NULL != allow_origins)
611  {
612  char *tmp = GNUNET_strdup (allow_origins);
613  char *allow_origin = strtok (tmp, ",");
614  while (NULL != allow_origin)
615  {
616  if (0 == strncmp (allow_origin, origin, strlen (allow_origin)))
617  {
618  MHD_add_response_header (con_handle->response,
619  MHD_HTTP_HEADER_ACCESS_CONTROL_ALLOW_ORIGIN,
620  allow_origin);
621  break;
622  }
623  allow_origin = strtok (NULL, ",");
624  }
625  GNUNET_free (tmp);
626  }
627  }
628  if (NULL != allow_credentials)
629  {
630  MHD_add_response_header (con_handle->response,
631  "Access-Control-Allow-Credentials",
633  }
634  if (NULL != allow_headers)
635  {
636  MHD_add_response_header (con_handle->response,
637  "Access-Control-Allow-Headers",
638  allow_headers);
639  }
640  run_mhd_now ();
641  {
642  MHD_RESULT ret = MHD_queue_response (con,
643  con_handle->status,
644  con_handle->response);
645  // cleanup_handle (con_handle);
646  return ret;
647  }
648 }
static int ret
Return value of the commandline.
Definition: gnunet-abd.c:81
static char * allow_origins
Allowed Origins (CORS)
static void plugin_callback(void *cls, struct MHD_Response *resp, int status)
Plugin result callback.
char cuser[LOGIN_NAME_MAX]
User of the service.
static int basic_auth_enabled
Do basic auth of user.
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)
#define GN_REST_STATE_INIT
static char * allow_headers
Allowed Headers (CORS)
static char * basic_auth_secret
Basic auth secret.
#define GN_REST_STATE_PROCESSING
static int url_iterator(void *cls, enum MHD_ValueKind kind, const char *key, const char *value)
static int header_iterator(void *cls, enum MHD_ValueKind kind, const char *key, const char *value)
static int echo_origin
Echo request Origin in CORS.
static char * allow_credentials
Allowed Credentials (CORS)
static struct MHD_Response * failure_response
Response we return on failures.
static struct PluginListEntry * plugins_head
Plugin list head.
#define MHD_RESULT
Data type to use for functions return an "MHD result".
struct GNUNET_CONTAINER_MultiHashMap * GNUNET_CONTAINER_multihashmap_create(unsigned int len, int do_not_copy_keys)
Create a multi hash map.
@ GNUNET_NO
Definition: gnunet_common.h:98
#define GNUNET_break(cond)
Use this for internal assertion violations that are not fatal (can be handled) but should not occur.
@ GNUNET_ERROR_TYPE_WARNING
@ GNUNET_ERROR_TYPE_DEBUG
#define GNUNET_new(type)
Allocate a struct or union of the given type.
Accepted requests.
enum GNUNET_GenericReturnValue(* process_request)(struct GNUNET_REST_RequestHandle *handle, GNUNET_REST_ResultProcessor proc, void *proc_cls)
Function to process a REST call.
struct GNUNET_CONTAINER_MultiHashMap * header_param_map
Map of headers.
const char * data
The POST data.
const char * url
The url as string.
const char * method
The HTTP method as MHD value (see microhttpd.h)
struct GNUNET_CONTAINER_MultiHashMap * url_param_map
Map of url parameters.
size_t data_size
The POST data size.
struct GNUNET_REST_RequestHandle * data_handle
struct MHD_PostProcessor * pp
struct MHD_Response * response
struct MHD_Connection * con
A plugin list entry.
struct GNUNET_REST_Plugin * plugin
The plugin.
struct PluginListEntry * next

References allow_credentials, allow_headers, allow_origins, basic_auth_enabled, basic_auth_secret, MhdConnectionHandle::con, AcceptedRequest::con_handle, cuser, 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_break, GNUNET_CONTAINER_multihashmap_create(), GNUNET_CONTAINER_multihashmap_get(), GNUNET_CRYPTO_hash(), GNUNET_ERROR_TYPE_DEBUG, GNUNET_ERROR_TYPE_WARNING, GNUNET_free, GNUNET_log, GNUNET_new, GNUNET_NO, GNUNET_strdup, GNUNET_YES, header_iterator(), GNUNET_REST_RequestHandle::header_param_map, key, GNUNET_REST_RequestHandle::method, MHD_RESULT, PluginListEntry::next, PluginListEntry::plugin, plugin_callback(), plugins_head, 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().

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◆ kill_httpd()

static void kill_httpd ( )
static

Kill the MHD daemon.

Definition at line 658 of file gnunet-rest-server.c.

659 {
660  if (NULL != httpd)
661  {
662  MHD_stop_daemon (httpd);
663  httpd = NULL;
664  }
665  if (NULL != httpd_task)
666  {
668  httpd_task = NULL;
669  }
670  if (NULL != ltask4)
671  {
673  ltask4 = NULL;
674  }
675  if (NULL != ltask6)
676  {
678  ltask6 = NULL;
679  }
680 
681  if (NULL != lsock4)
682  {
684  lsock4 = NULL;
685  }
686  if (NULL != lsock6)
687  {
689  lsock6 = NULL;
690  }
691 }
static struct GNUNET_NETWORK_Handle * lsock6
The listen socket of the service for IPv6.
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_SCHEDULER_Task * ltask4
The listen task ID for IPv4.

References GNUNET_NETWORK_socket_close(), GNUNET_SCHEDULER_cancel(), httpd, httpd_task, lsock4, lsock6, ltask4, and ltask6.

Referenced by do_shutdown(), and schedule_httpd().

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◆ 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 702 of file gnunet-rest-server.c.

703 {
704  fd_set rs;
705  fd_set ws;
706  fd_set es;
707  struct GNUNET_NETWORK_FDSet *wrs;
708  struct GNUNET_NETWORK_FDSet *wws;
709  int max;
710  int haveto;
711  MHD_UNSIGNED_LONG_LONG timeout;
712  struct GNUNET_TIME_Relative tv;
713 
714  FD_ZERO (&rs);
715  FD_ZERO (&ws);
716  FD_ZERO (&es);
717  max = -1;
718  if (MHD_YES != MHD_get_fdset (httpd, &rs, &ws, &es, &max))
719  {
720  kill_httpd ();
721  return;
722  }
723  haveto = MHD_get_timeout (httpd, &timeout);
724  if (MHD_YES == haveto)
725  tv.rel_value_us = (uint64_t) timeout * 1000LL;
726  else
728  if (-1 != max)
729  {
732  GNUNET_NETWORK_fdset_copy_native (wrs, &rs, max + 1);
733  GNUNET_NETWORK_fdset_copy_native (wws, &ws, max + 1);
734  }
735  else
736  {
737  wrs = NULL;
738  wws = NULL;
739  }
740  if (NULL != httpd_task)
741  {
743  httpd_task = NULL;
744  }
745  if ((MHD_YES == haveto) || (-1 != max))
746  {
748  tv,
749  wrs,
750  wws,
751  &do_httpd,
752  NULL);
753  }
754  if (NULL != wrs)
756  if (NULL != wws)
758 }
static struct GNUNET_TIME_Relative timeout
Desired timeout for the lookup (default is no timeout).
Definition: gnunet-abd.c:61
static void kill_httpd()
Kill the MHD daemon.
@ GNUNET_SCHEDULER_PRIORITY_DEFAULT
Run with the default priority (normal P2P operations).
struct GNUNET_NETWORK_FDSet * GNUNET_NETWORK_fdset_create(void)
Creates an fd set.
Definition: network.c:1193
void GNUNET_NETWORK_fdset_destroy(struct GNUNET_NETWORK_FDSet *fds)
Releases the associated memory of an fd set.
Definition: network.c:1209
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:1063
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:1826
#define GNUNET_TIME_UNIT_FOREVER_REL
Constant used to specify "forever".
#define max(x, y)
collection of IO descriptors
Time for relative time used by GNUnet, in microseconds.

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, httpd_task, kill_httpd(), max, GNUNET_TIME_Relative::rel_value_us, and timeout.

Referenced by do_accept(), and do_httpd().

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◆ mhd_log_callback()

static void* mhd_log_callback ( void *  cls,
const char *  url,
struct MHD_Connection *  connection 
)
static

Function called when MHD first processes an incoming connection.

Gives us the respective URI information.

We use this to associate the struct MHD_Connection with our internal struct AcceptedRequest data structure (by checking for matching sockets).

Parameters
clsthe HTTP server handle (a struct MhdHttpList)
urlthe URL that is being requested
connectionMHD connection object for the request
Returns
the struct Socks5Request that this connection is for

Definition at line 774 of file gnunet-rest-server.c.

777 {
778  struct AcceptedRequest *ar;
779  const union MHD_ConnectionInfo *ci;
780 
781  ci = MHD_get_connection_info (connection,
782  MHD_CONNECTION_INFO_SOCKET_CONTEXT);
783  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Processing %s\n", url);
784  if (NULL == ci)
785  {
786  GNUNET_break (0);
787  return NULL;
788  }
789  ar = ci->socket_context;
790  return ar;
791 }

References GNUNET_break, GNUNET_ERROR_TYPE_DEBUG, and GNUNET_log.

Referenced by run().

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◆ 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 805 of file gnunet-rest-server.c.

809 {
810  struct AcceptedRequest *ar = *con_cls;
811  if (MHD_REQUEST_TERMINATED_COMPLETED_OK != toe)
813  "MHD encountered error handling request: %d\n",
814  toe);
815  if (NULL == ar)
816  return;
817  if (NULL != ar->con_handle)
818  {
820  ar->con_handle = NULL;
821  }
823  *con_cls = NULL;
824 }

References cleanup_handle(), AcceptedRequest::con_handle, GNUNET_ERROR_TYPE_ERROR, GNUNET_log, GNUNET_YES, and AcceptedRequest::socket_with_mhd.

Referenced by run().

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◆ mhd_connection_cb()

static void mhd_connection_cb ( void *  cls,
struct MHD_Connection *  connection,
void **  con_cls,
enum MHD_ConnectionNotificationCode  cnc 
)
static

Function called when MHD connection is opened or closed.

Parameters
clsNULL
connectionconnection handle
con_clsvalue as set by the last call to the MHD_AccessHandlerCallback, should be our struct Socks5Request *
toeconnection notification type

Definition at line 836 of file gnunet-rest-server.c.

840 {
841  struct AcceptedRequest *ar;
842  const union MHD_ConnectionInfo *ci;
843  int sock;
844 
845  switch (cnc)
846  {
847  case MHD_CONNECTION_NOTIFY_STARTED:
848  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Connection started...\n");
849  ci = MHD_get_connection_info (connection,
850  MHD_CONNECTION_INFO_CONNECTION_FD);
851  if (NULL == ci)
852  {
853  GNUNET_break (0);
854  return;
855  }
856  sock = ci->connect_fd;
857  for (ar = req_list_head; NULL != ar; ar = ar->next)
858  {
859  if (GNUNET_NETWORK_get_fd (ar->sock) == sock)
860  {
862  "Context set...\n");
863  *con_cls = ar;
864  break;
865  }
866  }
867  break;
868 
869  case MHD_CONNECTION_NOTIFY_CLOSED:
871  "Connection closed... cleaning up\n");
872  ar = *con_cls;
873  if (NULL == ar)
874  {
876  "Connection stale!\n");
877  return;
878  }
879  cleanup_ar (ar);
880  *con_cls = NULL;
881  break;
882 
883  default:
884  GNUNET_break (0);
885  }
886 }
static void cleanup_ar(struct AcceptedRequest *ar)
int GNUNET_NETWORK_get_fd(const struct GNUNET_NETWORK_Handle *desc)
Return file descriptor for this network handle.
Definition: network.c:1023
struct AcceptedRequest * next
DLL.

References cleanup_ar(), GNUNET_break, GNUNET_ERROR_TYPE_DEBUG, GNUNET_ERROR_TYPE_ERROR, GNUNET_log, GNUNET_NETWORK_get_fd(), AcceptedRequest::next, req_list_head, and AcceptedRequest::sock.

Referenced by run().

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◆ 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 911 of file gnunet-rest-server.c.

912 {
913  struct GNUNET_NETWORK_Handle *lsock = cls;
914  struct AcceptedRequest *ar;
915  int fd;
916  const struct sockaddr *addr;
917  socklen_t len;
918 
919  GNUNET_assert (NULL != lsock);
920  if (lsock == lsock4)
921  {
923  lsock,
924  &do_accept,
925  lsock);
926  }
927  else if (lsock == lsock6)
928  {
930  lsock,
931  &do_accept,
932  lsock);
933  }
934  else
935  GNUNET_assert (0);
936  ar = GNUNET_new (struct AcceptedRequest);
938  ar->sock = GNUNET_NETWORK_socket_accept (lsock, NULL, NULL);
939  if (NULL == ar->sock)
940  {
941  GNUNET_free (ar);
943  return;
944  }
946  "Got an inbound connection, waiting for data\n");
947  fd = GNUNET_NETWORK_get_fd (ar->sock);
948  addr = GNUNET_NETWORK_get_addr (ar->sock);
952  ar);
953  if (MHD_YES != MHD_add_connection (httpd, fd, addr, len))
954  {
956  GNUNET_free (ar);
958  _ ("Failed to pass client to MHD\n"));
959  return;
960  }
961  schedule_httpd ();
962 }
uint16_t len
length of data (which is always a uint32_t, but presumably this can be used to specify that fewer byt...
static void do_accept(void *cls)
Accept new incoming connections.
#define GNUNET_CONTAINER_DLL_insert(head, tail, element)
Insert an element at the head of a DLL.
#define GNUNET_assert(cond)
Use this for fatal errors that cannot be handled.
#define GNUNET_log_strerror(level, cmd)
Log an error message at log-level 'level' that indicates a failure of the command 'cmd' with the mess...
struct sockaddr * GNUNET_NETWORK_get_addr(const struct GNUNET_NETWORK_Handle *desc)
Return the sockaddr for this network handle.
Definition: network.c:1036
socklen_t GNUNET_NETWORK_get_addrlen(const struct GNUNET_NETWORK_Handle *desc)
Return sockaddr length for this network handle.
Definition: network.c:1049
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:392
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:1502
#define _(String)
GNU gettext support macro.
Definition: platform.h:177
handle to a socket
Definition: network.c:53

References _, GNUNET_assert, GNUNET_CONTAINER_DLL_insert, 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_NETWORK_socket_close(), GNUNET_new, GNUNET_SCHEDULER_add_read_net(), GNUNET_TIME_UNIT_FOREVER_REL, GNUNET_YES, httpd, len, lsock4, lsock6, ltask4, ltask6, req_list_head, req_list_tail, schedule_httpd(), AcceptedRequest::sock, and AcceptedRequest::socket_with_mhd.

Referenced by run().

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◆ do_shutdown()

static void do_shutdown ( void *  cls)
static

Task run on shutdown.

Parameters
clsclosure

Definition at line 971 of file gnunet-rest-server.c.

972 {
973  struct PluginListEntry *ple;
974 
975  while (NULL != plugins_head)
976  {
977  ple = plugins_head;
979  plugins_tail,
980  ple);
981  GNUNET_PLUGIN_unload (ple->libname, ple->plugin);
982  GNUNET_free (ple->libname);
983  GNUNET_free (ple);
984  }
985  GNUNET_log (GNUNET_ERROR_TYPE_INFO, "Shutting down...\n");
986  kill_httpd ();
989 }
static struct PluginListEntry * plugins_tail
Plugin list tail.
@ GNUNET_ERROR_TYPE_INFO
void * GNUNET_PLUGIN_unload(const char *library_name, void *arg)
Unload plugin (runs the "done" callback and returns whatever "done" returned).
Definition: plugin.c:241
char * libname
libname (to cleanup)

References allow_credentials, allow_headers, GNUNET_CONTAINER_DLL_remove, GNUNET_ERROR_TYPE_INFO, GNUNET_free, GNUNET_log, GNUNET_PLUGIN_unload(), kill_httpd(), PluginListEntry::libname, PluginListEntry::plugin, plugins_head, and plugins_tail.

Referenced by run().

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◆ 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 998 of file gnunet-rest-server.c.

999 {
1000  struct GNUNET_NETWORK_Handle *ls;
1001  struct sockaddr_in sa4;
1002  int eno;
1003 
1004  memset (&sa4, 0, sizeof(sa4));
1005  sa4.sin_family = AF_INET;
1006  sa4.sin_port = htons (port);
1007  sa4.sin_addr.s_addr = address;
1008 #if HAVE_SOCKADDR_IN_SIN_LEN
1009  sa4.sin_len = sizeof(sa4);
1010 #endif
1011  ls = GNUNET_NETWORK_socket_create (AF_INET, SOCK_STREAM, 0);
1012  if (NULL == ls)
1013  return NULL;
1015  (const struct sockaddr *) &sa4,
1016  sizeof(sa4)))
1017  {
1018  eno = errno;
1020  errno = eno;
1021  return NULL;
1022  }
1023  return ls;
1024 }
static struct GNUNET_NETWORK_Handle * ls
Listen socket for STUN processing.
Definition: gnunet-nat.c:85
static unsigned long long port
The port the service is running on (default 7776)
static in_addr_t address
The address to bind to.
struct GNUNET_NETWORK_Handle * GNUNET_NETWORK_socket_create(int domain, int type, int protocol)
Create a new socket.
Definition: network.c:855
enum GNUNET_GenericReturnValue 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:439

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

Referenced by run().

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◆ 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 1033 of file gnunet-rest-server.c.

1034 {
1035  struct GNUNET_NETWORK_Handle *ls;
1036  struct sockaddr_in6 sa6;
1037  int eno;
1038 
1039  memset (&sa6, 0, sizeof(sa6));
1040  sa6.sin6_family = AF_INET6;
1041  sa6.sin6_port = htons (port);
1042  sa6.sin6_addr = address6;
1043 #if HAVE_SOCKADDR_IN_SIN_LEN
1044  sa6.sin6_len = sizeof(sa6);
1045 #endif
1046  ls = GNUNET_NETWORK_socket_create (AF_INET6, SOCK_STREAM, 0);
1047  if (NULL == ls)
1048  return NULL;
1050  (const struct sockaddr *) &sa6,
1051  sizeof(sa6)))
1052  {
1053  eno = errno;
1055  errno = eno;
1056  return NULL;
1057  }
1058  return ls;
1059 }
static struct in6_addr address6
The IPv6 address to bind to.

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

Referenced by run().

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◆ 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 1070 of file gnunet-rest-server.c.

1071 {
1072  struct GNUNET_REST_Plugin *plugin = lib_ret;
1073  struct PluginListEntry *ple;
1074 
1075  if (NULL == lib_ret)
1076  {
1078  "Could not load plugin `%s'\n",
1079  libname);
1080  return;
1081  }
1082  GNUNET_assert (1 < strlen (plugin->name));
1083  GNUNET_assert ('/' == *plugin->name);
1084  ple = GNUNET_new (struct PluginListEntry);
1085  ple->libname = GNUNET_strdup (libname);
1086  ple->plugin = plugin;
1088  plugins_tail,
1089  ple);
1090  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Loaded plugin `%s'\n", libname);
1091 }
struct Plugin * plugin
The process handle to the testbed service.
struct returned by the initialization function of the plugin
char * name
Plugin name.

References GNUNET_assert, GNUNET_CONTAINER_DLL_insert, GNUNET_ERROR_TYPE_DEBUG, GNUNET_log, GNUNET_new, GNUNET_strdup, PluginListEntry::libname, Plugin::name, PluginListEntry::plugin, plugin, plugins_head, and plugins_tail.

Referenced by run().

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◆ 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 1103 of file gnunet-rest-server.c.

1107 {
1108  char *addr_str;
1109  char *basic_auth_file;
1110  uint64_t secret;
1111 
1112  cfg = c;
1113  plugins_head = NULL;
1114  plugins_tail = NULL;
1115  /* Get port to bind to */
1116  if (GNUNET_OK !=
1117  GNUNET_CONFIGURATION_get_value_number (cfg, "rest", "HTTP_PORT", &port))
1118  {
1119  // No address specified
1120  GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "Using default port...\n");
1122  }
1123 
1124  /* Get address to bind to */
1125  if (GNUNET_OK !=
1126  GNUNET_CONFIGURATION_get_value_string (cfg, "rest", "BIND_TO", &addr_str))
1127  {
1128  // No address specified
1129  GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "Don't know what to bind to...\n");
1131  return;
1132  }
1133  if (1 != inet_pton (AF_INET, addr_str, &address))
1134  {
1136  "Unable to parse address %s\n",
1137  addr_str);
1138  GNUNET_free (addr_str);
1140  return;
1141  }
1142  GNUNET_free (addr_str);
1143  /* Get address to bind to */
1145  "rest",
1146  "BIND_TO6",
1147  &addr_str))
1148  {
1149  // No address specified
1150  GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "Don't know what to bind6 to...\n");
1152  return;
1153  }
1154  if (1 != inet_pton (AF_INET6, addr_str, &address6))
1155  {
1157  "Unable to parse IPv6 address %s\n",
1158  addr_str);
1159  GNUNET_free (addr_str);
1161  return;
1162  }
1163  GNUNET_free (addr_str);
1164 
1166  "rest",
1167  "BASIC_AUTH_ENABLED");
1168  if (basic_auth_enabled)
1169  {
1171  "rest",
1172  "BASIC_AUTH_SECRET_FILE",
1173  &basic_auth_file))
1174  {
1176  "No basic auth secret file location set...\n");
1178  return;
1179  }
1180  if (GNUNET_YES != GNUNET_DISK_file_test (basic_auth_file))
1181  {
1183  "No basic auth secret found... generating\n");
1185  UINT64_MAX);
1187  sizeof(secret));
1188  if (GNUNET_OK !=
1189  GNUNET_DISK_fn_write (basic_auth_file,
1191  strlen (basic_auth_secret),
1195  "write",
1196  basic_auth_file);
1197  }
1198  else
1199  {
1200  char basic_auth_secret_tmp[16]; // Should be more than enough
1201  memset (basic_auth_secret_tmp, 0, 16);
1202  if (GNUNET_SYSERR == GNUNET_DISK_fn_read (basic_auth_file,
1203  basic_auth_secret_tmp,
1204  sizeof (basic_auth_secret_tmp)))
1205  {
1207  "Unable to read basic auth secret file.\n");
1209  return;
1210  }
1211  if (0 != getlogin_r (cuser, LOGIN_NAME_MAX))
1212  {
1214  "Unable to get user.\n");
1216  return;
1217  }
1218  basic_auth_secret = GNUNET_strdup (basic_auth_secret_tmp);
1219  }
1220  }
1221 
1222  /* Get CORS data from cfg */
1223  echo_origin =
1225  "rest",
1226  "REST_ECHO_ORIGIN_WEBEXT");
1227  allow_origins = NULL;
1229  "rest",
1230  "REST_ALLOW_ORIGIN",
1231  &allow_origins))
1232  {
1234  "No CORS Access-Control-Allow-Origin header will be sent...\n");
1235  }
1236  if (GNUNET_OK !=
1238  "rest",
1239  "REST_ALLOW_CREDENTIALS",
1241  {
1242  // No origin specified
1244  "No CORS Credential Header will be sent...\n");
1245  }
1246 
1248  "rest",
1249  "REST_ALLOW_HEADERS",
1250  &allow_headers))
1251  {
1252  // No origin specified
1254  "No CORS Access-Control-Allow-Headers Header will be sent...\n");
1255  }
1256 
1257 /* Open listen socket proxy */
1258  lsock6 = bind_v6 ();
1259  if (NULL == lsock6)
1260  {
1262  }
1263  else
1264  {
1266  {
1269  lsock6 = NULL;
1270  }
1271  else
1272  {
1274  lsock6,
1275  &do_accept,
1276  lsock6);
1277  }
1278  }
1279  lsock4 = bind_v4 ();
1280  if (NULL == lsock4)
1281  {
1283  }
1284  else
1285  {
1287  {
1290  lsock4 = NULL;
1291  }
1292  else
1293  {
1295  lsock4,
1296  &do_accept,
1297  lsock4);
1298  }
1299  }
1300  if ((NULL == lsock4) && (NULL == lsock6))
1301  {
1303  return;
1304  }
1305  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Service listens on port %llu\n",
1306  port);
1307  httpd = MHD_start_daemon (MHD_USE_DEBUG | MHD_USE_NO_LISTEN_SOCKET
1308  | MHD_ALLOW_SUSPEND_RESUME,
1309  0,
1310  NULL,
1311  NULL,
1312  &create_response,
1313  NULL,
1314  MHD_OPTION_CONNECTION_TIMEOUT,
1315  (unsigned int) 16,
1316  MHD_OPTION_NOTIFY_CONNECTION,
1318  NULL,
1319  MHD_OPTION_URI_LOG_CALLBACK,
1321  NULL,
1322  MHD_OPTION_NOTIFY_COMPLETED,
1324  NULL,
1325  MHD_OPTION_END);
1326  if (NULL == httpd)
1327  {
1329  return;
1330  }
1331 /* Load plugins */
1333  "libgnunet_plugin_rest",
1334  (void *) cfg,
1335  &load_plugin,
1336  NULL);
1338 }
#define GNUNET_REST_SERVICE_PORT
Default Socks5 listen port.
static void * mhd_log_callback(void *cls, const char *url, struct MHD_Connection *connection)
Function called when MHD first processes an incoming connection.
static struct GNUNET_NETWORK_Handle * bind_v6()
Create an IPv6 listen socket bound to our port.
static const struct GNUNET_CONFIGURATION_Handle * cfg
Our configuration.
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 void do_shutdown(void *cls)
Task run on shutdown.
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.
static void load_plugin(void *cls, const char *libname, void *lib_ret)
Callback for plugin load.
static void mhd_connection_cb(void *cls, struct MHD_Connection *connection, void **con_cls, enum MHD_ConnectionNotificationCode cnc)
Function called when MHD connection is opened or closed.
static struct GNUNET_NETWORK_Handle * bind_v4()
Create an IPv4 listen socket bound to our port.
enum GNUNET_GenericReturnValue GNUNET_CONFIGURATION_get_value_filename(const struct GNUNET_CONFIGURATION_Handle *cfg, const char *section, const char *option, char **value)
Get a configuration value that should be the name of a file or directory.
enum GNUNET_GenericReturnValue 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.
enum GNUNET_GenericReturnValue 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".
enum GNUNET_GenericReturnValue 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.
uint64_t GNUNET_CRYPTO_random_u64(enum GNUNET_CRYPTO_Quality mode, uint64_t max)
Generate a random unsigned 64-bit value.
@ GNUNET_CRYPTO_QUALITY_WEAK
No good quality of the operation is needed (i.e., random numbers can be pseudo-random).
enum GNUNET_GenericReturnValue 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:482
enum GNUNET_GenericReturnValue GNUNET_DISK_fn_write(const char *fn, const void *buf, size_t buf_size, enum GNUNET_DISK_AccessPermissions mode)
Write a buffer to a file atomically.
Definition: disk.c:725
ssize_t GNUNET_DISK_fn_read(const char *fn, void *result, size_t len)
Read the contents of a binary file into a buffer.
Definition: disk.c:664
@ GNUNET_DISK_PERM_USER_READ
Owner can read.
@ GNUNET_DISK_PERM_USER_WRITE
Owner can write.
@ GNUNET_SYSERR
Definition: gnunet_common.h:97
#define GNUNET_log_strerror_file(level, cmd, filename)
Log an error message at log-level 'level' that indicates a failure of the command 'cmd' with the mess...
enum GNUNET_GenericReturnValue GNUNET_NETWORK_socket_listen(const struct GNUNET_NETWORK_Handle *desc, int backlog)
Listen on a socket.
Definition: network.c:656
const struct GNUNET_OS_ProjectData * GNUNET_OS_project_data_default(void)
Return default project data used by 'libgnunetutil' for GNUnet.
void GNUNET_PLUGIN_load_all_in_context(const struct GNUNET_OS_ProjectData *ctx, const char *basename, void *arg, GNUNET_PLUGIN_LoaderCallback cb, void *cb_cls)
Load all compatible plugins with the given base name while inside the given context (i....
Definition: plugin.c:385
void GNUNET_SCHEDULER_shutdown(void)
Request the shutdown of a scheduler.
Definition: scheduler.c:533
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,...
Definition: scheduler.c:1316
char * GNUNET_STRINGS_data_to_string_alloc(const void *buf, size_t size)
Return the base32crockford encoding of the given buffer.
Definition: strings.c:764

References address, address6, allow_credentials, allow_headers, allow_origins, basic_auth_enabled, basic_auth_secret, bind_v4(), bind_v6(), cfg, create_response(), cuser, do_accept(), do_shutdown(), echo_origin, GNUNET_CONFIGURATION_get_value_filename(), GNUNET_CONFIGURATION_get_value_number(), GNUNET_CONFIGURATION_get_value_string(), GNUNET_CONFIGURATION_get_value_yesno(), GNUNET_CRYPTO_QUALITY_WEAK, GNUNET_CRYPTO_random_u64(), GNUNET_DISK_file_test(), GNUNET_DISK_fn_read(), GNUNET_DISK_fn_write(), GNUNET_DISK_PERM_USER_READ, GNUNET_DISK_PERM_USER_WRITE, GNUNET_ERROR_TYPE_DEBUG, GNUNET_ERROR_TYPE_ERROR, GNUNET_ERROR_TYPE_INFO, GNUNET_ERROR_TYPE_WARNING, GNUNET_free, GNUNET_log, GNUNET_log_strerror, GNUNET_log_strerror_file, GNUNET_NETWORK_socket_close(), GNUNET_NETWORK_socket_listen(), GNUNET_OK, GNUNET_OS_project_data_default(), GNUNET_PLUGIN_load_all_in_context(), GNUNET_REST_SERVICE_PORT, GNUNET_SCHEDULER_add_read_net(), GNUNET_SCHEDULER_add_shutdown(), GNUNET_SCHEDULER_shutdown(), GNUNET_strdup, GNUNET_STRINGS_data_to_string_alloc(), GNUNET_SYSERR, GNUNET_TIME_UNIT_FOREVER_REL, GNUNET_YES, httpd, load_plugin(), lsock4, lsock6, ltask4, ltask6, mhd_completed_cb(), mhd_connection_cb(), mhd_log_callback(), plugins_head, plugins_tail, and port.

Referenced by main().

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◆ 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 1351 of file gnunet-rest-server.c.

1352 {
1355  static const char *err_page = "{}";
1356  int ret;
1357 
1358  if (GNUNET_OK != GNUNET_STRINGS_get_utf8_args (argc, argv, &argc, &argv))
1359  return 2;
1360  GNUNET_log_setup ("gnunet-rest-server", "WARNING", NULL);
1361  failure_response = MHD_create_response_from_buffer (strlen (err_page),
1362  (void *) err_page,
1363  MHD_RESPMEM_PERSISTENT);
1364  ret = (GNUNET_OK == GNUNET_PROGRAM_run (argc,
1365  argv,
1366  "gnunet-rest-server",
1367  _ ("GNUnet REST server"),
1368  options,
1369  &run,
1370  NULL))
1371  ? 0
1372  : 1;
1373  MHD_destroy_response (failure_response);
1374  GNUNET_free_nz ((char *) argv);
1375  return ret;
1376 }
struct GNUNET_GETOPT_CommandLineOption GNUNET_GETOPT_OPTION_END
Definition: 002.c:13
struct GNUNET_GETOPT_CommandLineOption options[]
Definition: 002.c:5
static void run(void *cls, char *const *args, const char *cfgfile, const struct GNUNET_CONFIGURATION_Handle *c)
Main function that will be run.
int GNUNET_log_setup(const char *comp, const char *loglevel, const char *logfile)
Setup logging.
#define GNUNET_free_nz(ptr)
Wrapper around free.
enum GNUNET_GenericReturnValue 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,...
Definition: program.c:399
enum GNUNET_GenericReturnValue GNUNET_STRINGS_get_utf8_args(int argc, char *const *argv, int *u8argc, char *const **u8argv)
Returns utf-8 encoded arguments.
Definition: strings.c:1223
Definition of a command line option.

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

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Variable Documentation

◆ httpd_task

struct GNUNET_SCHEDULER_Task* httpd_task
static

The task ID.

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

Referenced by do_httpd(), kill_httpd(), run_mhd_now(), and schedule_httpd().

◆ 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 70 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.

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

◆ 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.

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

◆ ltask4

struct GNUNET_SCHEDULER_Task* ltask4
static

The listen task ID for IPv4.

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

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

◆ ltask6

struct GNUNET_SCHEDULER_Task* ltask6
static

The listen task ID for IPv6.

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

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

◆ 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.

Referenced by run().

◆ echo_origin

int echo_origin
static

Echo request Origin in CORS.

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

Referenced by create_response(), and run().

◆ basic_auth_enabled

int basic_auth_enabled
static

Do basic auth of user.

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

Referenced by create_response(), and run().

◆ basic_auth_secret

char* basic_auth_secret
static

Basic auth secret.

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

Referenced by create_response(), and run().

◆ cuser

char cuser[LOGIN_NAME_MAX]

User of the service.

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

Referenced by create_response(), and run().

◆ allow_origins

char* allow_origins
static

Allowed Origins (CORS)

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

Referenced by create_response(), and run().

◆ allow_headers

char* allow_headers
static

Allowed Headers (CORS)

Definition at line 145 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 150 of file gnunet-rest-server.c.

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

◆ plugins_head

struct PluginListEntry* plugins_head
static

Plugin list head.

Definition at line 155 of file gnunet-rest-server.c.

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

◆ plugins_tail

struct PluginListEntry* plugins_tail
static

Plugin list tail.

Definition at line 160 of file gnunet-rest-server.c.

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

◆ req_list_head

struct AcceptedRequest* req_list_head
static

AcceptedRequest list head.

Definition at line 236 of file gnunet-rest-server.c.

Referenced by cleanup_ar(), do_accept(), and mhd_connection_cb().

◆ req_list_tail

struct AcceptedRequest* req_list_tail
static

AcceptedRequest list tail.

Definition at line 241 of file gnunet-rest-server.c.

Referenced by cleanup_ar(), and do_accept().