#include "messenger_api_list_tunnels.h"

Include dependency graph for messenger_api_list_tunnels.c:

Functions
void	init_list_tunnels (struct GNUNET_MESSENGER_ListTunnels *tunnels)
	Initializes list of tunnels peer identities as empty list. More...

void	clear_list_tunnels (struct GNUNET_MESSENGER_ListTunnels *tunnels)
	Clears the list of tunnels peer identities. More...

static int	compare_list_tunnels (void cls, struct GNUNET_MESSENGER_ListTunnel element0, struct GNUNET_MESSENGER_ListTunnel *element1)

void	add_to_list_tunnels (struct GNUNET_MESSENGER_ListTunnels tunnels, const struct GNUNET_PeerIdentity peer, const struct GNUNET_HashCode *hash)
	Adds a specific peer from a tunnel to the end of the list. More...

struct GNUNET_MESSENGER_ListTunnel *	find_list_tunnels (struct GNUNET_MESSENGER_ListTunnels tunnels, const struct GNUNET_PeerIdentity peer, size_t *index)
	Searches linearly through the list of tunnels peer identities for matching a specific peer identity and returns the matching element of the list. More...

struct GNUNET_MESSENGER_ListTunnel *	find_list_tunnels_alternate (struct GNUNET_MESSENGER_ListTunnels tunnels, const struct GNUNET_PeerIdentity peer)
	Searches linearly through the list of tunnels peer identities for matching against a specific peer identity and returns an element of the list which does not match it. More...

enum GNUNET_GenericReturnValue	verify_list_tunnels_flag_token (const struct GNUNET_MESSENGER_ListTunnels tunnels, const struct GNUNET_PeerIdentity peer, enum GNUNET_MESSENGER_ConnectionFlags flag)
	Verifies that a specific tunnel selected by its peer identity in a list of tunnels is the first in order with a given connection flag. More...

void	update_to_list_tunnels (struct GNUNET_MESSENGER_ListTunnels tunnels, const struct GNUNET_PeerIdentity peer, const struct GNUNET_HashCode *hash)
	Updates a specific peer from a tunnel in the list. More...

enum GNUNET_GenericReturnValue	contains_list_tunnels (struct GNUNET_MESSENGER_ListTunnels tunnels, const struct GNUNET_PeerIdentity peer)
	Tests linearly if the list of tunnels peer identities contains a specific peer identity and returns GNUNET_YES on success, otherwise GNUNET_NO. More...

struct GNUNET_MESSENGER_ListTunnel *	remove_from_list_tunnels (struct GNUNET_MESSENGER_ListTunnels tunnels, struct GNUNET_MESSENGER_ListTunnel element)
	Removes a specific element from the list of tunnels peer identities and returns the next element in the list. More...

void	load_list_tunnels (struct GNUNET_MESSENGER_ListTunnels tunnels, const char path)
	Loads the list of tunnels peer identities from a file under a given path. More...

void	save_list_tunnels (struct GNUNET_MESSENGER_ListTunnels tunnels, const char path)
	Saves the list of tunnels peer identities to a file under a given path. More...

Function Documentation

◆ init_list_tunnels()

void init_list_tunnels ( struct GNUNET_MESSENGER_ListTunnels * tunnels )

Initializes list of tunnels peer identities as empty list.

Parameters

[out] tunnels List of tunnels

Definition at line 29 of file messenger_api_list_tunnels.c.

{
  GNUNET_assert (tunnels);
 
  tunnels->head = NULL;
  tunnels->tail = NULL;
}

References GNUNET_assert, GNUNET_MESSENGER_ListTunnels::head, and GNUNET_MESSENGER_ListTunnels::tail.

Referenced by create_room(), and create_srv_room().

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◆ clear_list_tunnels()

void clear_list_tunnels ( struct GNUNET_MESSENGER_ListTunnels * tunnels )

Clears the list of tunnels peer identities.

Parameters

[in,out] tunnels List of tunnels

Definition at line 39 of file messenger_api_list_tunnels.c.

{
  GNUNET_assert (tunnels);
 
  struct GNUNET_MESSENGER_ListTunnel *element;
  for (element = tunnels->head; element;
       element = remove_from_list_tunnels (tunnels, element))
 
    tunnels->head = NULL;
  tunnels->tail = NULL;
}

References GNUNET_assert, GNUNET_MESSENGER_ListTunnels::head, remove_from_list_tunnels(), and GNUNET_MESSENGER_ListTunnels::tail.

Referenced by destroy_room(), and destroy_srv_room().

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◆ compare_list_tunnels()

static int compare_list_tunnels	(	void *	cls,
		struct GNUNET_MESSENGER_ListTunnel *	element0,
		struct GNUNET_MESSENGER_ListTunnel *	element1
	)

static

Definition at line 53 of file messenger_api_list_tunnels.c.

{
  struct GNUNET_PeerIdentity peer0, peer1;
 
  GNUNET_PEER_resolve (element0->peer, &peer0);
  GNUNET_PEER_resolve (element1->peer, &peer1);
 
  return GNUNET_memcmp (&peer0, &peer1);
}

References GNUNET_memcmp, GNUNET_PEER_resolve(), and GNUNET_MESSENGER_ListTunnel::peer.

Referenced by add_to_list_tunnels().

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◆ add_to_list_tunnels()

void add_to_list_tunnels	(	struct GNUNET_MESSENGER_ListTunnels *	tunnels,
		const struct GNUNET_PeerIdentity *	peer,
		const struct GNUNET_HashCode *	hash
	)

Adds a specific peer from a tunnel to the end of the list.

Optionally adds the hash of the peer message from the specific peer.

Parameters

[in,out]	tunnels	List of tunnels
[in]	peer	Peer identity of tunnel
[in]	hash	Hash of peer message or NULL

Definition at line 67 of file messenger_api_list_tunnels.c.

{
  GNUNET_assert ((tunnels) && (peer));
 
  struct GNUNET_MESSENGER_ListTunnel *element = GNUNET_new (struct
                                                            GNUNET_MESSENGER_ListTunnel);
 
  element->peer = GNUNET_PEER_intern (peer);
  element->hash = hash ? GNUNET_memdup (hash, sizeof (struct GNUNET_HashCode)) :
                  NULL;
 
  memset (&(element->connection), 0, sizeof (element->connection));
 
  GNUNET_CONTAINER_DLL_insert_sorted (struct GNUNET_MESSENGER_ListTunnel,
                                      compare_list_tunnels, NULL, tunnels->head,
                                      tunnels->tail, element);
}

References compare_list_tunnels(), GNUNET_MESSENGER_ListTunnel::connection, GNUNET_assert, GNUNET_CONTAINER_DLL_insert_sorted, GNUNET_memdup, GNUNET_new, GNUNET_PEER_intern(), GNUNET_MESSENGER_ListTunnel::hash, GNUNET_MESSENGER_ListTunnels::head, GNUNET_MESSENGER_ListTunnel::peer, and GNUNET_MESSENGER_ListTunnels::tail.

Referenced by entry_handle_room_at(), handle_message_peer(), and load_list_tunnels().

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◆ find_list_tunnels()

struct GNUNET_MESSENGER_ListTunnel * find_list_tunnels	(	struct GNUNET_MESSENGER_ListTunnels *	tunnels,
		const struct GNUNET_PeerIdentity *	peer,
		size_t *	index
	)

Searches linearly through the list of tunnels peer identities for matching a specific peer identity and returns the matching element of the list.

If no matching element is found, NULL gets returned.

If index is not NULL, index will be overridden with the numeric index of the found element in the list. If no matching element is found, index will contain the total amount of elements in the list.

Parameters

[in,out]	tunnels	List of tunnels
[in]	peer	Peer identity of tunnel
[out]	index	Index of found element (optional)

Returns: Element in the list with matching peer identity

Definition at line 89 of file messenger_api_list_tunnels.c.

{
  GNUNET_assert ((tunnels) && (peer));
 
  struct GNUNET_MESSENGER_ListTunnel *element;
  struct GNUNET_PeerIdentity pid;
 
  if (index)
    *index = 0;
 
  for (element = tunnels->head; element; element = element->next)
  {
    GNUNET_PEER_resolve (element->peer, &pid);
 
    if (0 == GNUNET_memcmp (&pid, peer))
      return element;
 
    if (index)
      (*index) = (*index) + 1;
  }
 
  return NULL;
}

References GNUNET_assert, GNUNET_memcmp, GNUNET_PEER_resolve(), GNUNET_MESSENGER_ListTunnels::head, GNUNET_MESSENGER_ListTunnel::next, GNUNET_MESSENGER_ListTunnel::peer, and pid.

Referenced by contains_list_tunnels(), handle_message_connection(), handle_message_miss(), handle_miss_message(), rebuild_srv_room_basement_structure(), and update_to_list_tunnels().

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◆ find_list_tunnels_alternate()

struct GNUNET_MESSENGER_ListTunnel * find_list_tunnels_alternate	(	struct GNUNET_MESSENGER_ListTunnels *	tunnels,
		const struct GNUNET_PeerIdentity *	peer
	)

Searches linearly through the list of tunnels peer identities for matching against a specific peer identity and returns an element of the list which does not match it.

Parameters

[in,out]	tunnels	List of tunnels
[in]	peer	Peer identity of tunnel

Returns: Element in the list with unmatching peer identity

Definition at line 117 of file messenger_api_list_tunnels.c.

{
  GNUNET_assert ((tunnels) && (peer));
 
  struct GNUNET_MESSENGER_ListTunnel *element;
  struct GNUNET_PeerIdentity pid;
 
  for (element = tunnels->head; element; element = element->next)
  {
    GNUNET_PEER_resolve (element->peer, &pid);
 
    if (0 != GNUNET_memcmp (&pid, peer))
      return element;
  }
 
  return NULL;
}

References GNUNET_assert, GNUNET_memcmp, GNUNET_PEER_resolve(), GNUNET_MESSENGER_ListTunnels::head, GNUNET_MESSENGER_ListTunnel::next, GNUNET_MESSENGER_ListTunnel::peer, and pid.

Referenced by callback_room_disconnect().

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◆ verify_list_tunnels_flag_token()

enum GNUNET_GenericReturnValue verify_list_tunnels_flag_token	(	const struct GNUNET_MESSENGER_ListTunnels *	tunnels,
		const struct GNUNET_PeerIdentity *	peer,
		enum GNUNET_MESSENGER_ConnectionFlags	flag
	)

Verifies that a specific tunnel selected by its peer identity in a list of tunnels is the first in order with a given connection flag.

Parameters

[in]	tunnels	List of tunnels
[in]	peer	Peer identity of tunnel
[in]	flag	Connection flag mask

Returns: GNUNET_OK on success, otherwise GNUNET_SYSERR

Definition at line 138 of file messenger_api_list_tunnels.c.

{
  GNUNET_assert ((tunnels) && (peer) && (flag));
 
  struct GNUNET_MESSENGER_ListTunnel *element;
  struct GNUNET_PeerIdentity pid;
 
  for (element = tunnels->head; element; element = element->next)
  {
    if ((element->connection.flags & flag) != flag)
      continue;
 
    GNUNET_PEER_resolve (element->peer, &pid);
 
    if (0 == GNUNET_memcmp (&pid, peer))
      return GNUNET_OK;
  }
 
  return GNUNET_SYSERR;
}

References GNUNET_MESSENGER_ListTunnel::connection, GNUNET_MESSENGER_MessageConnection::flags, GNUNET_assert, GNUNET_memcmp, GNUNET_OK, GNUNET_PEER_resolve(), GNUNET_SYSERR, GNUNET_MESSENGER_ListTunnels::head, GNUNET_MESSENGER_ListTunnel::next, GNUNET_MESSENGER_ListTunnel::peer, and pid.

Referenced by rebuild_srv_room_basement_structure().

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◆ update_to_list_tunnels()

void update_to_list_tunnels	(	struct GNUNET_MESSENGER_ListTunnels *	tunnels,
		const struct GNUNET_PeerIdentity *	peer,
		const struct GNUNET_HashCode *	hash
	)

Updates a specific peer from a tunnel in the list.

This function exists to add the hash of a newer peer message from the specific peer to the list element. It can also remove the hash when NULL is provided as new hash value.

Parameters

[in,out]	tunnels	List of tunnels
[in]	peer	Peer identity of tunnel
[in]	hash	Hash of peer message or NULL

Definition at line 164 of file messenger_api_list_tunnels.c.

{
  GNUNET_assert ((tunnels) && (peer));
 
  struct GNUNET_MESSENGER_ListTunnel *element = find_list_tunnels (tunnels,
                                                                   peer,
                                                                   NULL);
  if (! element)
    return;
 
  if (element->hash)
  {
    if (hash)
      GNUNET_memcpy (element->hash, hash, sizeof(struct GNUNET_HashCode));
    else
    {
      GNUNET_free (element->hash);
      element->hash = NULL;
    }
  }
  else if (hash)
    element->hash = GNUNET_memdup (hash, sizeof(struct GNUNET_HashCode));
}

References find_list_tunnels(), GNUNET_assert, GNUNET_free, GNUNET_memcpy, GNUNET_memdup, GNUNET_MESSENGER_ListTunnel::hash, and GNUNET_MESSENGER_ListTunnel::peer.

Referenced by recv_message_peer().

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◆ contains_list_tunnels()

enum GNUNET_GenericReturnValue contains_list_tunnels	(	struct GNUNET_MESSENGER_ListTunnels *	tunnels,
		const struct GNUNET_PeerIdentity *	peer
	)

Tests linearly if the list of tunnels peer identities contains a specific peer identity and returns GNUNET_YES on success, otherwise GNUNET_NO.

Parameters

[in,out]	tunnels	List of tunnels
[in]	peer	Peer identity of tunnel

Returns: GNUNET_YES on success, otherwise GNUNET_NO

Definition at line 192 of file messenger_api_list_tunnels.c.

{
  GNUNET_assert ((tunnels) && (peer));
 
  return find_list_tunnels (tunnels, peer, NULL) != NULL ? GNUNET_YES :
         GNUNET_NO;
}

References find_list_tunnels(), GNUNET_assert, GNUNET_NO, GNUNET_YES, and GNUNET_MESSENGER_ListTunnel::peer.

Referenced by callback_room_disconnect(), handle_message_peer(), and recv_message_info().

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◆ remove_from_list_tunnels()

struct GNUNET_MESSENGER_ListTunnel * remove_from_list_tunnels	(	struct GNUNET_MESSENGER_ListTunnels *	tunnels,
		struct GNUNET_MESSENGER_ListTunnel *	element
	)

Removes a specific element from the list of tunnels peer identities and returns the next element in the list.

Parameters

[in,out]	tunnels	List of tunnels
[in,out]	element	Element of the list

Returns: Next element in the list

Definition at line 203 of file messenger_api_list_tunnels.c.

{
  GNUNET_assert ((tunnels) && (element));
 
  struct GNUNET_MESSENGER_ListTunnel *next = element->next;
 
  if ((tunnels->head) && (tunnels->tail))
    GNUNET_CONTAINER_DLL_remove (tunnels->head, tunnels->tail, element);
 
  if (element->hash)
    GNUNET_free (element->hash);
 
  GNUNET_PEER_change_rc (element->peer, -1);
  GNUNET_free (element);
 
  return next;
}

References GNUNET_assert, GNUNET_CONTAINER_DLL_remove, GNUNET_free, GNUNET_PEER_change_rc(), GNUNET_MESSENGER_ListTunnel::hash, GNUNET_MESSENGER_ListTunnels::head, GNUNET_MESSENGER_ListTunnel::next, GNUNET_MESSENGER_ListTunnel::peer, and GNUNET_MESSENGER_ListTunnels::tail.

Referenced by clear_list_tunnels(), handle_message_miss(), handle_miss_message(), and rebuild_srv_room_basement_structure().

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◆ load_list_tunnels()

void load_list_tunnels	(	struct GNUNET_MESSENGER_ListTunnels *	tunnels,
		const char *	path
	)

Loads the list of tunnels peer identities from a file under a given path.

Parameters

[out]	tunnels	List of tunnels
[in]	path	Path of file

Definition at line 224 of file messenger_api_list_tunnels.c.

{
  GNUNET_assert ((tunnels) && (path));
 
  if (GNUNET_YES != GNUNET_DISK_file_test (path))
    return;
 
  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Load list of tunnels from path: %s\n",
              path);
 
  enum GNUNET_DISK_AccessPermissions permission = (GNUNET_DISK_PERM_USER_READ
                                                   | GNUNET_DISK_PERM_USER_WRITE);
 
  struct GNUNET_DISK_FileHandle *handle = GNUNET_DISK_file_open (
    path, GNUNET_DISK_OPEN_READ, permission
    );
 
  if (! handle)
    return;
 
  GNUNET_DISK_file_seek (handle, 0, GNUNET_DISK_SEEK_SET);
 
  struct GNUNET_PeerIdentity peer;
  ssize_t len;
 
  do {
    len = GNUNET_DISK_file_read (handle, &peer, sizeof(peer));
 
    if (len != sizeof(peer))
      break;
 
    add_to_list_tunnels (tunnels, &peer, NULL);
  } while (len == sizeof(peer));
 
  GNUNET_DISK_file_close (handle);
}

References add_to_list_tunnels(), GNUNET_assert, GNUNET_DISK_file_close(), GNUNET_DISK_file_open(), GNUNET_DISK_file_read(), GNUNET_DISK_file_seek(), GNUNET_DISK_file_test(), GNUNET_DISK_OPEN_READ, GNUNET_DISK_PERM_USER_READ, GNUNET_DISK_PERM_USER_WRITE, GNUNET_DISK_SEEK_SET, GNUNET_ERROR_TYPE_DEBUG, GNUNET_log, GNUNET_YES, and handle.

Referenced by load_srv_room().

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◆ save_list_tunnels()

void save_list_tunnels	(	struct GNUNET_MESSENGER_ListTunnels *	tunnels,
		const char *	path
	)

Saves the list of tunnels peer identities to a file under a given path.

Parameters

[in]	tunnels	List of tunnels
[in]	path	Path of file

Definition at line 264 of file messenger_api_list_tunnels.c.

{
  GNUNET_assert ((tunnels) && (path));
 
  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Save list of tunnels to path: %s\n",
              path);
 
  enum GNUNET_DISK_AccessPermissions permission = (GNUNET_DISK_PERM_USER_READ
                                                   | GNUNET_DISK_PERM_USER_WRITE);
 
  struct GNUNET_DISK_FileHandle *handle = GNUNET_DISK_file_open (
    path, GNUNET_DISK_OPEN_CREATE | GNUNET_DISK_OPEN_WRITE, permission
    );
 
  if (! handle)
    return;
 
  GNUNET_DISK_file_seek (handle, 0, GNUNET_DISK_SEEK_SET);
 
  struct GNUNET_MESSENGER_ListTunnel *element;
  struct GNUNET_PeerIdentity pid;
 
  for (element = tunnels->head; element; element = element->next)
  {
    GNUNET_PEER_resolve (element->peer, &pid);
 
    GNUNET_DISK_file_write (handle, &pid, sizeof(pid));
  }
 
  GNUNET_DISK_file_sync (handle);
  GNUNET_DISK_file_close (handle);
}

References GNUNET_assert, GNUNET_DISK_file_close(), GNUNET_DISK_file_open(), GNUNET_DISK_file_seek(), GNUNET_DISK_file_sync(), GNUNET_DISK_file_write(), GNUNET_DISK_OPEN_CREATE, GNUNET_DISK_OPEN_WRITE, GNUNET_DISK_PERM_USER_READ, GNUNET_DISK_PERM_USER_WRITE, GNUNET_DISK_SEEK_SET, GNUNET_ERROR_TYPE_DEBUG, GNUNET_log, GNUNET_PEER_resolve(), handle, GNUNET_MESSENGER_ListTunnels::head, GNUNET_MESSENGER_ListTunnel::next, GNUNET_MESSENGER_ListTunnel::peer, and pid.

Referenced by save_srv_room().

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Functions

Function Documentation

◆ init_list_tunnels()

◆ clear_list_tunnels()

◆ compare_list_tunnels()

◆ add_to_list_tunnels()

◆ find_list_tunnels()

◆ find_list_tunnels_alternate()

◆ verify_list_tunnels_flag_token()

◆ update_to_list_tunnels()

◆ contains_list_tunnels()

◆ remove_from_list_tunnels()

◆ load_list_tunnels()

◆ save_list_tunnels()