#include "gnunet-service-messenger_message_store.h"
#include "gnunet-service-messenger_list_messages.h"
#include "messenger_api_message.h"

Include dependency graph for gnunet-service-messenger_message_store.c:

Data Structures
struct	GNUNET_MESSENGER_MessageEntryStorage

struct	GNUNET_MESSENGER_MessageLinkStorage

struct	GNUNET_MESSENGER_ClosureMessageSave

struct	GNUNET_MESSENGER_CleanupDiscourseMessages

Macros
#define	load_message_store_attribute_failed(file, attribute)

#define	save_message_store_attribute_failed(file, attribute)

Functions
void	init_message_store (struct GNUNET_MESSENGER_MessageStore *store)
	Initializes a message store as fully empty. More...

static enum GNUNET_GenericReturnValue	iterate_destroy_entries (void cls, const struct GNUNET_HashCode key, void *value)

static enum GNUNET_GenericReturnValue	iterate_destroy_messages (void cls, const struct GNUNET_HashCode key, void *value)

static enum GNUNET_GenericReturnValue	iterate_destroy_links (void cls, const struct GNUNET_HashCode key, void *value)

void	clear_message_store (struct GNUNET_MESSENGER_MessageStore *store)
	Clears a message store, wipes its content and deallocates its memory. More...

static void	load_message_store_entries (struct GNUNET_MESSENGER_MessageStore store, const char filename)

static void	load_message_store_links (struct GNUNET_MESSENGER_MessageStore store, const char filename)

void	load_message_store (struct GNUNET_MESSENGER_MessageStore store, const char directory)
	Loads messages from a directory into a message store. More...

static enum GNUNET_GenericReturnValue	iterate_save_links (void cls, const struct GNUNET_HashCode key, void *value)

static enum GNUNET_GenericReturnValue	iterate_save_entries (void cls, const struct GNUNET_HashCode key, void *value)

static enum GNUNET_GenericReturnValue	iterate_save_messages (void cls, const struct GNUNET_HashCode key, void *value)

void	save_message_store (struct GNUNET_MESSENGER_MessageStore store, const char directory)
	Saves messages from a message store into a directory. More...

enum GNUNET_GenericReturnValue	contains_store_message (const struct GNUNET_MESSENGER_MessageStore store, const struct GNUNET_HashCode hash)
	Checks if a message matching a given hash is stored in a message store. More...

const struct GNUNET_MESSENGER_Message *	get_store_message (struct GNUNET_MESSENGER_MessageStore store, const struct GNUNET_HashCode hash)
	Returns the message from a message store matching a given hash. More...

const struct GNUNET_MESSENGER_MessageLink *	get_store_message_link (struct GNUNET_MESSENGER_MessageStore store, const struct GNUNET_HashCode hash, enum GNUNET_GenericReturnValue deleted_only)
	Returns the message link from a message store matching a given hash. More...

static void	add_link (struct GNUNET_MESSENGER_MessageStore store, const struct GNUNET_HashCode hash, const struct GNUNET_MESSENGER_Message *message)

enum GNUNET_GenericReturnValue	put_store_message (struct GNUNET_MESSENGER_MessageStore store, const struct GNUNET_HashCode hash, struct GNUNET_MESSENGER_Message *message)
	Stores a message into the message store. More...

enum GNUNET_GenericReturnValue	delete_store_message (struct GNUNET_MESSENGER_MessageStore store, const struct GNUNET_HashCode hash)
	Deletes a message in the message store. More...

static enum GNUNET_GenericReturnValue	iterate_flag_for_cleanup_discourse_message (void cls, const struct GNUNET_HashCode key, void *value)

void	cleanup_store_discourse_messages_before (struct GNUNET_MESSENGER_MessageStore store, const struct GNUNET_ShortHashCode discourse, const struct GNUNET_TIME_Absolute timestamp)
	Cleans up and deletes all discourse messages existing in the message store memory before a certain timestamp. More...

Macro Definition Documentation

◆ load_message_store_attribute_failed

#define load_message_store_attribute_failed	(	file,
		attribute
	)

Value:

sizeof(attribute) != GNUNET_DISK_file_read (file, &(attribute), \

sizeof(attribute))

GNUNET_DISK_file_read

ssize_t GNUNET_DISK_file_read(const struct GNUNET_DISK_FileHandle *h, void *result, size_t len)

Read the contents of a binary file into a buffer.

Definition: disk.c:646

Definition at line 131 of file gnunet-service-messenger_message_store.c.

◆ save_message_store_attribute_failed

#define save_message_store_attribute_failed	(	file,
		attribute
	)

Value:

sizeof(attribute) != GNUNET_DISK_file_write (file, &(attribute), \

sizeof(attribute))

GNUNET_DISK_file_write

ssize_t GNUNET_DISK_file_write(const struct GNUNET_DISK_FileHandle *h, const void *buffer, size_t n)

Write a buffer to a file.

Definition: disk.c:682

Definition at line 135 of file gnunet-service-messenger_message_store.c.

Function Documentation

◆ init_message_store()

void init_message_store ( struct GNUNET_MESSENGER_MessageStore * store )

Initializes a message store as fully empty.

Parameters

[out] store Message store

Definition at line 33 of file gnunet-service-messenger_message_store.c.

{
  GNUNET_assert (store);
 
  store->storage_messages = NULL;
 
  store->entries = GNUNET_CONTAINER_multihashmap_create (8, GNUNET_NO);
  store->messages = GNUNET_CONTAINER_multihashmap_create (8, GNUNET_NO);
  store->links = GNUNET_CONTAINER_multihashmap_create (8, GNUNET_NO);
  store->discourses = GNUNET_CONTAINER_multihashmap_create (8, GNUNET_NO);
 
  store->rewrite_entries = GNUNET_NO;
  store->write_links = GNUNET_NO;
}

References GNUNET_MESSENGER_MessageStore::discourses, GNUNET_MESSENGER_MessageStore::entries, GNUNET_assert, GNUNET_CONTAINER_multihashmap_create(), GNUNET_NO, GNUNET_MESSENGER_MessageStore::links, GNUNET_MESSENGER_MessageStore::messages, GNUNET_MESSENGER_MessageStore::rewrite_entries, GNUNET_MESSENGER_MessageStore::storage_messages, and GNUNET_MESSENGER_MessageStore::write_links.

Referenced by create_srv_room().

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◆ iterate_destroy_entries()

static enum GNUNET_GenericReturnValue iterate_destroy_entries	(	void *	cls,
		const struct GNUNET_HashCode *	key,
		void *	value
	)

static

Definition at line 50 of file gnunet-service-messenger_message_store.c.

{
  struct GNUNET_MESSENGER_MessageEntry *entry;
 
  GNUNET_assert (value);
 
  entry = value;
 
  GNUNET_free (entry);
  return GNUNET_YES;
}

References GNUNET_assert, GNUNET_free, GNUNET_YES, and value.

Referenced by clear_message_store().

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◆ iterate_destroy_messages()

static enum GNUNET_GenericReturnValue iterate_destroy_messages	(	void *	cls,
		const struct GNUNET_HashCode *	key,
		void *	value
	)

static

Definition at line 66 of file gnunet-service-messenger_message_store.c.

{
  struct GNUNET_MESSENGER_Message *message;
 
  GNUNET_assert (value);
  
  message = value;
 
  destroy_message (message);
  return GNUNET_YES;
}

References destroy_message(), GNUNET_assert, GNUNET_YES, and value.

Referenced by clear_message_store().

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◆ iterate_destroy_links()

static enum GNUNET_GenericReturnValue iterate_destroy_links	(	void *	cls,
		const struct GNUNET_HashCode *	key,
		void *	value
	)

static

Definition at line 82 of file gnunet-service-messenger_message_store.c.

{
  struct GNUNET_HashCode *previous;
 
  GNUNET_assert (value);
 
  previous = value;
 
  GNUNET_free (previous);
  return GNUNET_YES;
}

References GNUNET_assert, GNUNET_free, GNUNET_YES, and value.

Referenced by clear_message_store().

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◆ clear_message_store()

void clear_message_store ( struct GNUNET_MESSENGER_MessageStore * store )

Clears a message store, wipes its content and deallocates its memory.

Parameters

[in,out] store Message store

Definition at line 98 of file gnunet-service-messenger_message_store.c.

{
  GNUNET_assert (store);
 
  if (store->storage_messages)
  {
    GNUNET_DISK_file_close (store->storage_messages);
 
    store->storage_messages = NULL;
  }
 
  GNUNET_CONTAINER_multihashmap_iterate (store->entries,
                                         iterate_destroy_entries, NULL);
  GNUNET_CONTAINER_multihashmap_iterate (store->messages,
                                         iterate_destroy_messages, NULL);
  GNUNET_CONTAINER_multihashmap_iterate (store->links, iterate_destroy_links,
                                         NULL);
  GNUNET_CONTAINER_multihashmap_iterate (store->discourses,
                                         iterate_destroy_messages, NULL);
 
  GNUNET_CONTAINER_multihashmap_destroy (store->entries);
  GNUNET_CONTAINER_multihashmap_destroy (store->messages);
  GNUNET_CONTAINER_multihashmap_destroy (store->links);
  GNUNET_CONTAINER_multihashmap_destroy (store->discourses);
}

References GNUNET_MESSENGER_MessageStore::discourses, GNUNET_MESSENGER_MessageStore::entries, GNUNET_assert, GNUNET_CONTAINER_multihashmap_destroy(), GNUNET_CONTAINER_multihashmap_iterate(), GNUNET_DISK_file_close(), iterate_destroy_entries(), iterate_destroy_links(), iterate_destroy_messages(), GNUNET_MESSENGER_MessageStore::links, GNUNET_MESSENGER_MessageStore::messages, and GNUNET_MESSENGER_MessageStore::storage_messages.

Referenced by destroy_srv_room().

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◆ load_message_store_entries()

static void load_message_store_entries	(	struct GNUNET_MESSENGER_MessageStore *	store,
		const char *	filename
	)

static

Definition at line 140 of file gnunet-service-messenger_message_store.c.

{
  enum GNUNET_DISK_AccessPermissions permission;
  struct GNUNET_DISK_FileHandle *entries;
  struct GNUNET_MESSENGER_MessageEntryStorage storage;
  struct GNUNET_MESSENGER_MessageEntry *entry;
  
  permission = (GNUNET_DISK_PERM_USER_READ);
  entries = GNUNET_DISK_file_open (filename, GNUNET_DISK_OPEN_READ,
                                   permission);
 
  if (! entries)
    return;
 
  memset (&storage, 0, sizeof(storage));
 
  do
  {
    entry = NULL;
 
    if ((load_message_store_attribute_failed (entries, storage.hash)) ||
        (load_message_store_attribute_failed (entries, storage.entry.offset)) ||
        (load_message_store_attribute_failed (entries, storage.entry.length)))
      break;
 
    entry = GNUNET_new (struct GNUNET_MESSENGER_MessageEntry);
 
    GNUNET_memcpy (entry, &(storage.entry), sizeof(*entry));
 
    if ((GNUNET_YES == GNUNET_CONTAINER_multihashmap_contains (store->entries,
                                                               &(storage.hash)))
        ||
        (GNUNET_OK != GNUNET_CONTAINER_multihashmap_put (store->entries,
                                                         &(storage.hash), entry,
                                                         GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_FAST)))
    {
      store->rewrite_entries = GNUNET_YES;
      break;
    }
  }
  while (entry);
 
  if (entry)
    GNUNET_free (entry);
 
  GNUNET_DISK_file_close (entries);
}

References GNUNET_MESSENGER_MessageStore::entries, GNUNET_MESSENGER_MessageEntryStorage::entry, filename, GNUNET_CONTAINER_multihashmap_contains(), GNUNET_CONTAINER_multihashmap_put(), GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_FAST, GNUNET_DISK_file_close(), GNUNET_DISK_file_open(), GNUNET_DISK_OPEN_READ, GNUNET_DISK_PERM_USER_READ, GNUNET_free, GNUNET_memcpy, GNUNET_new, GNUNET_OK, GNUNET_YES, GNUNET_MESSENGER_MessageEntryStorage::hash, GNUNET_MESSENGER_MessageEntry::length, load_message_store_attribute_failed, GNUNET_MESSENGER_MessageEntry::offset, and GNUNET_MESSENGER_MessageStore::rewrite_entries.

Referenced by load_message_store().

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◆ load_message_store_links()

static void load_message_store_links	(	struct GNUNET_MESSENGER_MessageStore *	store,
		const char *	filename
	)

static

Definition at line 197 of file gnunet-service-messenger_message_store.c.

{
  enum GNUNET_DISK_AccessPermissions permission;
  struct GNUNET_DISK_FileHandle *entries;
  struct GNUNET_MESSENGER_MessageLinkStorage storage;
  struct GNUNET_MESSENGER_MessageLink *link;
  
  permission = (GNUNET_DISK_PERM_USER_READ);
 
  entries = GNUNET_DISK_file_open (filename, GNUNET_DISK_OPEN_READ,
                                   permission);
 
  if (! entries)
    return;
 
  memset (&storage, 0, sizeof(storage));
 
  do
  {
    link = NULL;
 
    if ((load_message_store_attribute_failed (entries, storage.hash)) ||
        (load_message_store_attribute_failed (entries,
                                              storage.link.multiple)) ||
        (load_message_store_attribute_failed (entries, storage.link.first)) ||
        ((GNUNET_YES == storage.link.multiple) &&
         (load_message_store_attribute_failed (entries, storage.link.second))))
      break;
 
    link = GNUNET_new (struct GNUNET_MESSENGER_MessageLink);
 
    GNUNET_memcpy (link, &(storage.link), sizeof(*link));
 
    if ((GNUNET_YES == GNUNET_CONTAINER_multihashmap_contains (store->links,
                                                               &(storage.hash)))
        ||
        (GNUNET_OK != GNUNET_CONTAINER_multihashmap_put (store->links,
                                                         &(storage.hash), link,
                                                         GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_FAST)))
 
      break;
  }
  while (link);
 
  if (link)
    GNUNET_free (link);
 
  GNUNET_DISK_file_close (entries);
}

References filename, GNUNET_MESSENGER_MessageLink::first, GNUNET_CONTAINER_multihashmap_contains(), GNUNET_CONTAINER_multihashmap_put(), GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_FAST, GNUNET_DISK_file_close(), GNUNET_DISK_file_open(), GNUNET_DISK_OPEN_READ, GNUNET_DISK_PERM_USER_READ, GNUNET_free, GNUNET_memcpy, GNUNET_new, GNUNET_OK, GNUNET_YES, GNUNET_MESSENGER_MessageLinkStorage::hash, GNUNET_MESSENGER_MessageLinkStorage::link, GNUNET_MESSENGER_MessageStore::links, load_message_store_attribute_failed, GNUNET_MESSENGER_MessageLink::multiple, and GNUNET_MESSENGER_MessageLink::second.

Referenced by load_message_store().

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◆ load_message_store()

void load_message_store	(	struct GNUNET_MESSENGER_MessageStore *	store,
		const char *	directory
	)

Loads messages from a directory into a message store.

Parameters

[out]	store	Message store
[in]	directory	Path to a directory

Definition at line 250 of file gnunet-service-messenger_message_store.c.

{
  enum GNUNET_DISK_AccessPermissions permission;
  char *filename;
 
  GNUNET_assert ((store) && (directory));
 
  permission = (GNUNET_DISK_PERM_USER_READ | GNUNET_DISK_PERM_USER_WRITE);
 
  if (store->storage_messages)
    GNUNET_DISK_file_close (store->storage_messages);
 
  GNUNET_asprintf (&filename, "%s%s", directory, "messages.store");
 
  if (GNUNET_YES == GNUNET_DISK_file_test (filename))
    store->storage_messages = GNUNET_DISK_file_open (filename,
                                                     GNUNET_DISK_OPEN_READWRITE,
                                                     permission);
  else
    store->storage_messages = NULL;
 
  GNUNET_free (filename);
 
  if (! store->storage_messages)
    return;
 
  GNUNET_asprintf (&filename, "%s%s", directory, "entries.store");
 
  if (GNUNET_YES == GNUNET_DISK_file_test (filename))
    load_message_store_entries (store, filename);
 
  GNUNET_free (filename);
 
  GNUNET_asprintf (&filename, "%s%s", directory, "links.store");
 
  if (GNUNET_YES == GNUNET_DISK_file_test (filename))
    load_message_store_links (store, filename);
 
  GNUNET_free (filename);
}

References filename, GNUNET_asprintf(), GNUNET_assert, GNUNET_DISK_file_close(), GNUNET_DISK_file_open(), GNUNET_DISK_file_test(), GNUNET_DISK_OPEN_READWRITE, GNUNET_DISK_PERM_USER_READ, GNUNET_DISK_PERM_USER_WRITE, GNUNET_free, GNUNET_YES, load_message_store_entries(), load_message_store_links(), and GNUNET_MESSENGER_MessageStore::storage_messages.

Referenced by load_srv_room().

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◆ iterate_save_links()

static enum GNUNET_GenericReturnValue iterate_save_links	(	void *	cls,
		const struct GNUNET_HashCode *	key,
		void *	value
	)

static

Definition at line 301 of file gnunet-service-messenger_message_store.c.

{
  struct GNUNET_MESSENGER_ClosureMessageSave *save;
  struct GNUNET_MESSENGER_MessageLink *link;
 
  GNUNET_assert ((cls) && (key) && (value));
 
  save = cls;
  link = value;
 
  if ((save_message_store_attribute_failed (save->storage, (*key))) ||
      (save_message_store_attribute_failed (save->storage, link->multiple)) ||
      (save_message_store_attribute_failed (save->storage, link->first)))
    return GNUNET_NO;
 
  if ((GNUNET_YES == link->multiple) &&
      (save_message_store_attribute_failed (save->storage, link->second)))
    return GNUNET_NO;
 
  return GNUNET_YES;
}

References GNUNET_MESSENGER_MessageLink::first, GNUNET_assert, GNUNET_NO, GNUNET_YES, key, GNUNET_MESSENGER_MessageLink::multiple, save(), save_message_store_attribute_failed, GNUNET_MESSENGER_MessageLink::second, and value.

Referenced by save_message_store().

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◆ iterate_save_entries()

static enum GNUNET_GenericReturnValue iterate_save_entries	(	void *	cls,
		const struct GNUNET_HashCode *	key,
		void *	value
	)

static

Definition at line 327 of file gnunet-service-messenger_message_store.c.

{
  struct GNUNET_MESSENGER_ClosureMessageSave *save;
  struct GNUNET_MESSENGER_MessageEntry *entry;
 
  GNUNET_assert ((cls) && (key) && (value));
 
  save = cls;
  entry = value;
 
  if ((save_message_store_attribute_failed (save->storage, (*key))) ||
      (save_message_store_attribute_failed (save->storage, entry->offset)) ||
      (save_message_store_attribute_failed (save->storage, entry->length)))
    return GNUNET_NO;
 
  return GNUNET_YES;
}

References GNUNET_assert, GNUNET_NO, GNUNET_YES, key, GNUNET_MESSENGER_MessageEntry::length, GNUNET_MESSENGER_MessageEntry::offset, save(), save_message_store_attribute_failed, and value.

Referenced by save_message_store().

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◆ iterate_save_messages()

static enum GNUNET_GenericReturnValue iterate_save_messages	(	void *	cls,
		const struct GNUNET_HashCode *	key,
		void *	value
	)

static

Definition at line 349 of file gnunet-service-messenger_message_store.c.

{
  struct GNUNET_MESSENGER_MessageEntryStorage storage;
  struct GNUNET_MESSENGER_ClosureMessageSave *save;
  struct GNUNET_MESSENGER_Message *message;
 
  GNUNET_assert ((cls) && (key) && (value));
  
  save = cls;
 
  if (GNUNET_YES == GNUNET_CONTAINER_multihashmap_contains (save->store->entries,
                                                            key))
    return GNUNET_YES;
 
  message = value;
 
  GNUNET_memcpy (&(storage.hash), key, sizeof(storage.hash));
 
  storage.entry.length = get_message_size (message, GNUNET_YES);
  storage.entry.offset = GNUNET_DISK_file_seek (save->store->storage_messages,
                                                0, GNUNET_DISK_SEEK_END);
 
  if ((GNUNET_SYSERR == storage.entry.offset) ||
      (save_message_store_attribute_failed (save->storage, storage.hash)) ||
      (save_message_store_attribute_failed (save->storage,
                                            storage.entry.offset)) ||
      (save_message_store_attribute_failed (save->storage,
                                            storage.entry.length)))
    return GNUNET_NO;
 
  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Storing message with hash: %s\n",
              GNUNET_h2s (&(storage.hash)));
 
  {
    char *buffer;
    buffer = GNUNET_malloc (storage.entry.length);
 
    encode_message (message, storage.entry.length, buffer, GNUNET_YES);
 
    GNUNET_DISK_file_write (save->store->storage_messages, buffer,
                            storage.entry.length);
 
    GNUNET_free (buffer);
  }
 
  return GNUNET_YES;
}

References encode_message(), GNUNET_MESSENGER_MessageEntryStorage::entry, get_message_size(), GNUNET_assert, GNUNET_CONTAINER_multihashmap_contains(), GNUNET_DISK_file_seek(), GNUNET_DISK_file_write(), GNUNET_DISK_SEEK_END, GNUNET_ERROR_TYPE_DEBUG, GNUNET_free, GNUNET_h2s(), GNUNET_log, GNUNET_malloc, GNUNET_memcpy, GNUNET_NO, GNUNET_SYSERR, GNUNET_YES, GNUNET_MESSENGER_MessageEntryStorage::hash, key, GNUNET_MESSENGER_MessageEntry::length, GNUNET_MESSENGER_MessageEntry::offset, save(), save_message_store_attribute_failed, and value.

Referenced by save_message_store().

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◆ save_message_store()

void save_message_store	(	struct GNUNET_MESSENGER_MessageStore *	store,
		const char *	directory
	)

Saves messages from a message store into a directory.

Parameters

[in]	store	Message store
[in]	directory	Path to a directory

Definition at line 401 of file gnunet-service-messenger_message_store.c.

{
  struct GNUNET_MESSENGER_ClosureMessageSave save;
  enum GNUNET_DISK_AccessPermissions permission;
  char *filename;
 
  GNUNET_assert ((store) && (directory));
 
  permission = (GNUNET_DISK_PERM_USER_READ | GNUNET_DISK_PERM_USER_WRITE);
 
  if (GNUNET_YES != store->write_links)
    goto save_entries;
 
  GNUNET_asprintf (&filename, "%s%s", directory, "links.store");
 
  save.store = store;
  save.storage = GNUNET_DISK_file_open (filename, GNUNET_DISK_OPEN_WRITE
                                        | GNUNET_DISK_OPEN_CREATE, permission);
 
  GNUNET_free (filename);
 
  if (! save.storage)
    goto save_entries;
 
  if (GNUNET_SYSERR == GNUNET_DISK_file_seek (save.storage, 0,
                                              GNUNET_DISK_SEEK_SET))
    goto close_links;
 
  GNUNET_CONTAINER_multihashmap_iterate (store->links, iterate_save_links,
                                         &save);
  store->write_links = GNUNET_NO;
 
close_links:
  GNUNET_DISK_file_close (save.storage);
 
save_entries:
  GNUNET_asprintf (&filename, "%s%s", directory, "entries.store");
 
  save.store = store;
  save.storage = GNUNET_DISK_file_open (filename, GNUNET_DISK_OPEN_WRITE
                                        | GNUNET_DISK_OPEN_CREATE, permission);
 
  GNUNET_free (filename);
 
  if (! save.storage)
    return;
 
  if (GNUNET_YES == store->rewrite_entries)
  {
    if (GNUNET_SYSERR == GNUNET_DISK_file_seek (save.storage, 0,
                                                GNUNET_DISK_SEEK_SET))
      goto close_entries;
 
    GNUNET_CONTAINER_multihashmap_iterate (store->entries, iterate_save_entries,
                                           &save);
    store->rewrite_entries = GNUNET_NO;
  }
  else if (GNUNET_SYSERR == GNUNET_DISK_file_seek (save.storage, 0,
                                                   GNUNET_DISK_SEEK_END))
    goto close_entries;
 
  if (store->storage_messages)
    GNUNET_DISK_file_close (store->storage_messages);
 
  GNUNET_asprintf (&filename, "%s%s", directory, "messages.store");
 
  store->storage_messages = GNUNET_DISK_file_open (filename,
                                                   GNUNET_DISK_OPEN_READWRITE
                                                   | GNUNET_DISK_OPEN_CREATE,
                                                   permission);
 
  GNUNET_free (filename);
 
  if (store->storage_messages)
  {
    GNUNET_CONTAINER_multihashmap_iterate (store->messages,
                                           iterate_save_messages, &save);
 
    GNUNET_DISK_file_sync (store->storage_messages);
    GNUNET_DISK_file_sync (save.storage);
  }
 
close_entries:
  GNUNET_DISK_file_close (save.storage);
}

References GNUNET_MESSENGER_MessageStore::entries, filename, GNUNET_asprintf(), GNUNET_assert, GNUNET_CONTAINER_multihashmap_iterate(), GNUNET_DISK_file_close(), GNUNET_DISK_file_open(), GNUNET_DISK_file_seek(), GNUNET_DISK_file_sync(), GNUNET_DISK_OPEN_CREATE, GNUNET_DISK_OPEN_READWRITE, GNUNET_DISK_OPEN_WRITE, GNUNET_DISK_PERM_USER_READ, GNUNET_DISK_PERM_USER_WRITE, GNUNET_DISK_SEEK_END, GNUNET_DISK_SEEK_SET, GNUNET_free, GNUNET_NO, GNUNET_SYSERR, GNUNET_YES, iterate_save_entries(), iterate_save_links(), iterate_save_messages(), GNUNET_MESSENGER_MessageStore::links, GNUNET_MESSENGER_MessageStore::messages, GNUNET_MESSENGER_MessageStore::rewrite_entries, save(), GNUNET_MESSENGER_MessageStore::storage_messages, GNUNET_MESSENGER_ClosureMessageSave::store, and GNUNET_MESSENGER_MessageStore::write_links.

Referenced by save_srv_room().

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◆ contains_store_message()

enum GNUNET_GenericReturnValue contains_store_message	(	const struct GNUNET_MESSENGER_MessageStore *	store,
		const struct GNUNET_HashCode *	hash
	)

Checks if a message matching a given hash is stored in a message store.

The function returns GNUNET_YES if a match is found, GNUNET_NO otherwise.

The message has not to be loaded from disk into memory for this check!

Parameters

[in]	store	Message store
[in]	hash	Hash of message

Returns: GNUNET_YES on match, otherwise GNUNET_NO

Definition at line 490 of file gnunet-service-messenger_message_store.c.

{
  GNUNET_assert ((store) && (hash));
 
  if (GNUNET_YES == GNUNET_CONTAINER_multihashmap_contains (store->messages,
                                                            hash))
    return GNUNET_YES;
 
  if (GNUNET_YES == GNUNET_CONTAINER_multihashmap_contains (store->discourses,
                                                            hash))
    return GNUNET_YES;
 
  return GNUNET_CONTAINER_multihashmap_contains (store->entries, hash);
}

References GNUNET_MESSENGER_MessageStore::discourses, GNUNET_MESSENGER_MessageStore::entries, GNUNET_assert, GNUNET_CONTAINER_multihashmap_contains(), GNUNET_YES, GNUNET_MESSENGER_MessageStore::messages, and GNUNET_MESSENGER_ClosureMessageSave::store.

Referenced by update_room_message().

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◆ get_store_message()

const struct GNUNET_MESSENGER_Message * get_store_message	(	struct GNUNET_MESSENGER_MessageStore *	store,
		const struct GNUNET_HashCode *	hash
	)

Returns the message from a message store matching a given hash.

If no matching message is found, NULL gets returned.

This function requires the message to be loaded into memory!

See also: contains_store_message()

Parameters

[in,out]	store	Message store
[in]	hash	Hash of message

Returns: Message or NULL

Definition at line 508 of file gnunet-service-messenger_message_store.c.

{
  struct GNUNET_MESSENGER_Message *message;
  const struct GNUNET_MESSENGER_MessageEntry *entry;
  enum GNUNET_GenericReturnValue decoding;
  struct GNUNET_HashCode check;
  char *buffer;
 
  GNUNET_assert ((store) && (hash));
 
  message = GNUNET_CONTAINER_multihashmap_get (store->messages, hash);
 
  if (message)
    return message;
 
  message = GNUNET_CONTAINER_multihashmap_get (store->discourses, hash);
 
  if (message)
    return message;
 
  if (! store->storage_messages)
    return NULL;
 
  entry = GNUNET_CONTAINER_multihashmap_get (store->entries, hash);
 
  if (! entry)
    return NULL;
 
  if (entry->offset != GNUNET_DISK_file_seek (store->storage_messages,
                                              entry->offset,
                                              GNUNET_DISK_SEEK_SET))
    return message;
 
  buffer = GNUNET_malloc (entry->length);
 
  if (! buffer)
    return NULL;
 
  if ((GNUNET_DISK_file_read (store->storage_messages, buffer, entry->length) !=
       entry->length) ||
      (entry->length < get_message_kind_size (GNUNET_MESSENGER_KIND_UNKNOWN,
                                              GNUNET_YES)))
    goto free_buffer;
 
  message = create_message (GNUNET_MESSENGER_KIND_UNKNOWN);
  decoding = decode_message (message, entry->length, buffer,
                             GNUNET_YES, NULL);
 
  hash_message (message, entry->length, buffer, &check);
 
  if ((GNUNET_YES != decoding) || (GNUNET_CRYPTO_hash_cmp (hash, &check) != 0))
  {
    if (GNUNET_YES != GNUNET_CONTAINER_multihashmap_remove (store->entries,
                                                            hash, entry))
      GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
                  "Corrupted entry could not be removed from store: %s\n",
                  GNUNET_h2s (hash));
 
    store->rewrite_entries = GNUNET_YES;
 
    goto free_message;
  }
 
  if (GNUNET_OK == GNUNET_CONTAINER_multihashmap_put (store->messages, hash,
                                                      message,
                                                      GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_FAST))
 
    goto free_buffer;
 
  free_message : destroy_message (message);
  message = NULL;
 
free_buffer:
  GNUNET_free (buffer);
 
  return message;
}

References create_message(), decode_message(), destroy_message(), GNUNET_MESSENGER_MessageStore::discourses, GNUNET_MESSENGER_MessageStore::entries, get_message_kind_size(), GNUNET_assert, GNUNET_CONTAINER_multihashmap_get(), GNUNET_CONTAINER_multihashmap_put(), GNUNET_CONTAINER_multihashmap_remove(), GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_FAST, GNUNET_CRYPTO_hash_cmp(), GNUNET_DISK_file_read(), GNUNET_DISK_file_seek(), GNUNET_DISK_SEEK_SET, GNUNET_ERROR_TYPE_WARNING, GNUNET_free, GNUNET_h2s(), GNUNET_log, GNUNET_malloc, GNUNET_MESSENGER_KIND_UNKNOWN, GNUNET_OK, GNUNET_YES, hash_message(), GNUNET_MESSENGER_MessageEntry::length, GNUNET_MESSENGER_MessageStore::messages, GNUNET_MESSENGER_MessageEntry::offset, GNUNET_MESSENGER_MessageStore::rewrite_entries, and GNUNET_MESSENGER_MessageStore::storage_messages.

Referenced by check_srv_room_peer_status(), delete_srv_room_message(), delete_store_message(), forward_about_members(), get_store_message_link(), handle_room_messages(), notify_about_members(), recv_message_info(), request_room_message_step(), update_tunnel_last_message(), and verify_tunnel_message().

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◆ get_store_message_link()

const struct GNUNET_MESSENGER_MessageLink * get_store_message_link	(	struct GNUNET_MESSENGER_MessageStore *	store,
		const struct GNUNET_HashCode *	hash,
		enum GNUNET_GenericReturnValue	deleted_only
	)

Returns the message link from a message store matching a given hash.

If the flag is set to GNUNET_YES, only links from deleted messages will be returned or NULL.

Otherwise message links will also returned for messages found in the store under the given hash. The link which will be returned copies link information from the message for temporary usage.

Parameters

[in,out]	store	Message store
[in]	hash	Hash of message
[in]	deleted_only	Flag

Returns: Message link or NULL

Definition at line 589 of file gnunet-service-messenger_message_store.c.

{
  const struct GNUNET_MESSENGER_Message *message;
 
  if (deleted_only)
    goto get_link;
 
  message = get_store_message (store, hash);
 
  if (message)
  {
    static struct GNUNET_MESSENGER_MessageLink link;
 
    GNUNET_memcpy (&(link.first), &(message->header.previous),
                  sizeof(link.first));
 
    link.multiple = GNUNET_MESSENGER_KIND_MERGE == message->header.kind?
                    GNUNET_YES : GNUNET_NO;
 
    if (GNUNET_YES == link.multiple)
      GNUNET_memcpy (&(link.second), &(message->body.merge.previous),
                    sizeof(link.second));
    else
      GNUNET_memcpy (&(link.second), &(message->header.previous),
                    sizeof(link.second));
 
    return &link;
  }
 
get_link:
  return GNUNET_CONTAINER_multihashmap_get (store->links, hash);
}

Referenced by check_member_session_completion(), and request_room_message_step().

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◆ add_link()

static void add_link	(	struct GNUNET_MESSENGER_MessageStore *	store,
		const struct GNUNET_HashCode *	hash,
		const struct GNUNET_MESSENGER_Message *	message
	)

static

Definition at line 626 of file gnunet-service-messenger_message_store.c.

{
  struct GNUNET_MESSENGER_MessageLink *link;
 
  GNUNET_assert ((store) && (hash) && (message));
  
  link = GNUNET_new (struct GNUNET_MESSENGER_MessageLink);
 
  GNUNET_memcpy (&(link->first), &(message->header.previous),
                 sizeof(link->first));
 
  link->multiple = GNUNET_MESSENGER_KIND_MERGE == message->header.kind?
                   GNUNET_YES : GNUNET_NO;
 
  if (GNUNET_YES == link->multiple)
    GNUNET_memcpy (&(link->second), &(message->body.merge.previous),
                   sizeof(link->second));
  else
    GNUNET_memcpy (&(link->second), &(message->header.previous),
                   sizeof(link->second));
 
  if (GNUNET_OK != GNUNET_CONTAINER_multihashmap_put (store->links, hash, link,
                                                      GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_FAST))
 
    GNUNET_free (link);
  else
    store->write_links = GNUNET_YES;
}

Referenced by delete_store_message().

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◆ put_store_message()

enum GNUNET_GenericReturnValue put_store_message	(	struct GNUNET_MESSENGER_MessageStore *	store,
		const struct GNUNET_HashCode *	hash,
		struct GNUNET_MESSENGER_Message *	message
	)

Stores a message into the message store.

The result indicates if the operation was successful.

Parameters

[in,out]	store	Message store
[in]	hash	Hash of message
[in,out]	message	Message

Returns: GNUNET_OK on success, otherwise GNUNET_NO

Definition at line 659 of file gnunet-service-messenger_message_store.c.

{
  struct GNUNET_CONTAINER_MultiHashMap *map;
 
  GNUNET_assert ((store) && (hash) && (message));
 
  map = store->messages;
 
  if (get_message_discourse (message))
    map = store->discourses;
 
  return GNUNET_CONTAINER_multihashmap_put (map, hash, message,
                                            GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_FAST);
}

References GNUNET_MESSENGER_MessageStore::discourses, get_message_discourse(), GNUNET_assert, GNUNET_CONTAINER_multihashmap_put(), GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_FAST, map, and GNUNET_MESSENGER_MessageStore::messages.

Referenced by update_room_message().

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◆ delete_store_message()

enum GNUNET_GenericReturnValue delete_store_message	(	struct GNUNET_MESSENGER_MessageStore *	store,
		const struct GNUNET_HashCode *	hash
	)

Deletes a message in the message store.

It will be removed from disk space and memory. The result indicates if the operation was successful.

Parameters

[in,out]	store	Message store
[in]	hash	Hash of message

Returns: GNUNET_OK on success, GNUNET_SYSERR on failure

Definition at line 678 of file gnunet-service-messenger_message_store.c.

{
  const struct GNUNET_MESSENGER_MessageEntry *entry;
 
  GNUNET_assert ((store) && (hash));
 
  entry = GNUNET_CONTAINER_multihashmap_get (store->entries, hash);
 
  if (! entry)
    goto clear_memory;
 
  {
    const struct GNUNET_MESSENGER_Message *message;
    message = get_store_message (store, hash);
 
    if (message)
      add_link (store, hash, message);
  }
 
  if (! store->storage_messages)
    goto clear_entry;
 
  if (entry->offset != GNUNET_DISK_file_seek (store->storage_messages,
                                              entry->offset,
                                              GNUNET_DISK_SEEK_SET))
    return GNUNET_SYSERR;
 
  {
    char *clear_buffer;
    clear_buffer = GNUNET_malloc (entry->length);
 
    if (! clear_buffer)
      return GNUNET_SYSERR;
 
    GNUNET_CRYPTO_zero_keys (clear_buffer, entry->length);
 
    if ((entry->length != GNUNET_DISK_file_write (store->storage_messages,
                                                  clear_buffer, entry->length)) ||
        (GNUNET_OK
        !=
        GNUNET_DISK_file_sync (
          store->storage_messages)))
    {
      GNUNET_free (clear_buffer);
      return GNUNET_SYSERR;
    }
 
    GNUNET_free (clear_buffer);
  }
 
clear_entry:
  if (GNUNET_YES == GNUNET_CONTAINER_multihashmap_remove (store->entries, hash,
                                                          entry))
    store->rewrite_entries = GNUNET_YES;
 
clear_memory:
  GNUNET_CONTAINER_multihashmap_remove_all (store->messages, hash);
  return GNUNET_OK;
}

References add_link(), GNUNET_MESSENGER_MessageStore::entries, get_store_message(), GNUNET_assert, GNUNET_CONTAINER_multihashmap_get(), GNUNET_CONTAINER_multihashmap_remove(), GNUNET_CONTAINER_multihashmap_remove_all(), GNUNET_CRYPTO_zero_keys(), GNUNET_DISK_file_seek(), GNUNET_DISK_file_sync(), GNUNET_DISK_file_write(), GNUNET_DISK_SEEK_SET, GNUNET_free, GNUNET_malloc, GNUNET_OK, GNUNET_SYSERR, GNUNET_YES, GNUNET_MESSENGER_MessageEntry::length, GNUNET_MESSENGER_MessageStore::messages, GNUNET_MESSENGER_MessageEntry::offset, GNUNET_MESSENGER_MessageStore::rewrite_entries, and GNUNET_MESSENGER_MessageStore::storage_messages.

Referenced by callback_operation().

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◆ iterate_flag_for_cleanup_discourse_message()

static enum GNUNET_GenericReturnValue iterate_flag_for_cleanup_discourse_message	(	void *	cls,
		const struct GNUNET_HashCode *	key,
		void *	value
	)

static

Definition at line 748 of file gnunet-service-messenger_message_store.c.

{
  struct GNUNET_MESSENGER_CleanupDiscourseMessages *cleanup;
  struct GNUNET_MESSENGER_Message *message;
  const struct GNUNET_ShortHashCode *discourse;
 
  GNUNET_assert ((cls) && (key) && (value));
 
  cleanup = cls;
  message = value;
 
  discourse = get_message_discourse (message);
 
  if ((! discourse) || (0 != GNUNET_memcmp (discourse, &(cleanup->discourse))))
    return GNUNET_YES;
 
  {
    struct GNUNET_TIME_Absolute timestamp;
    timestamp = GNUNET_TIME_absolute_ntoh (message->header.timestamp);
 
    if (GNUNET_TIME_absolute_cmp(timestamp, >=, cleanup->timestamp))
      return GNUNET_YES;
  }
 
  add_to_list_messages (cleanup->list, key);
  destroy_message(message);
 
  return GNUNET_YES;
}

References add_to_list_messages(), cleanup(), destroy_message(), get_message_discourse(), GNUNET_assert, GNUNET_memcmp, GNUNET_TIME_absolute_cmp, GNUNET_TIME_absolute_ntoh(), GNUNET_YES, GNUNET_MESSENGER_Message::header, key, GNUNET_MESSENGER_MessageHeader::timestamp, timestamp(), and value.

Referenced by cleanup_store_discourse_messages_before().

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◆ cleanup_store_discourse_messages_before()

void cleanup_store_discourse_messages_before	(	struct GNUNET_MESSENGER_MessageStore *	store,
		const struct GNUNET_ShortHashCode *	discourse,
		const struct GNUNET_TIME_Absolute	timestamp
	)

Cleans up and deletes all discourse messages existing in the message store memory before a certain timestamp.

Parameters

[in,out]	store	Message store
[in]	discourse	Hash of discourse
[in]	timestamp	Timestamp

Definition at line 781 of file gnunet-service-messenger_message_store.c.

{
  struct GNUNET_MESSENGER_ListMessages list;
  struct GNUNET_MESSENGER_CleanupDiscourseMessages cleanup;
 
  GNUNET_assert ((store) && (discourse));
    
  init_list_messages (&list);
 
  cleanup.list = &list;
  cleanup.timestamp = timestamp;
 
  GNUNET_memcpy (&(cleanup.discourse), discourse, 
                 sizeof (struct GNUNET_ShortHashCode));
 
  GNUNET_CONTAINER_multihashmap_iterate (store->discourses, 
                                         iterate_flag_for_cleanup_discourse_message,
                                         &cleanup);
  
  {
    struct GNUNET_MESSENGER_ListMessage *element;
    for (element = list.head; element; element = element->next)
      GNUNET_CONTAINER_multihashmap_remove_all (store->discourses, &(element->hash));
  }
 
  clear_list_messages (&list);
}

References cleanup(), clear_list_messages(), GNUNET_MESSENGER_CleanupDiscourseMessages::discourse, GNUNET_MESSENGER_MessageStore::discourses, GNUNET_assert, GNUNET_CONTAINER_multihashmap_iterate(), GNUNET_CONTAINER_multihashmap_remove_all(), GNUNET_memcpy, GNUNET_MESSENGER_ListMessage::hash, init_list_messages(), iterate_flag_for_cleanup_discourse_message(), list, GNUNET_MESSENGER_ListMessage::next, and timestamp().

Referenced by cleanup_srv_room_discourse_messages().

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Data Structures

Macros

Functions

Macro Definition Documentation

◆ load_message_store_attribute_failed

◆ save_message_store_attribute_failed

Function Documentation

◆ init_message_store()

◆ iterate_destroy_entries()

◆ iterate_destroy_messages()

◆ iterate_destroy_links()

◆ clear_message_store()

◆ load_message_store_entries()

◆ load_message_store_links()

◆ load_message_store()

◆ iterate_save_links()

◆ iterate_save_entries()

◆ iterate_save_messages()

◆ save_message_store()

◆ contains_store_message()

◆ get_store_message()

◆ get_store_message_link()

◆ add_link()

◆ put_store_message()

◆ delete_store_message()

◆ iterate_flag_for_cleanup_discourse_message()

◆ cleanup_store_discourse_messages_before()