/**
* Create an entry for an empty directory in a publish-structure.
* This function should be used by applications for which the
* use of "GNUNET_FS_file_information_create_from_directory"
* is not appropriate.
*
* @param h handle to the file sharing subsystem
* @param client_info initial value for the client-info value for this entry
* @param meta metadata for the directory
* @param keywords under which keywords should this directory be available
* directly; can be NULL
* @param bo block options
* @param filename name of the directory; can be NULL
* @return publish structure entry for the directory , NULL on error
*/
struct GNUNET_FS_FileInformation *
GNUNET_FS_file_information_create_empty_directory (struct GNUNET_FS_Handle *h,
void *client_info,
const struct GNUNET_FS_Uri
*keywords,
const struct
GNUNET_CONTAINER_MetaData
*meta,
const struct
GNUNET_FS_BlockOptions *bo,
const char *filename)
{
struct GNUNET_FS_FileInformation *ret;
ret = GNUNET_malloc (sizeof (struct GNUNET_FS_FileInformation));
ret->h = h;
ret->client_info = client_info;
ret->meta = GNUNET_CONTAINER_meta_data_duplicate (meta);
ret->keywords = GNUNET_FS_uri_dup (keywords);
ret->bo = *bo;
ret->is_directory = GNUNET_YES;
if (filename != NULL)
ret->filename = GNUNET_strdup (filename);
return ret;
}
/**
* Create an entry for a file in a publish-structure.
*
* @param h handle to the file sharing subsystem
* @param client_info initial value for the client-info value for this entry
* @param length length of the file
* @param reader function that can be used to obtain the data for the file
* @param reader_cls closure for "reader"
* @param keywords under which keywords should this file be available
* directly; can be NULL
* @param meta metadata for the file
* @param do_index GNUNET_YES for index, GNUNET_NO for insertion,
* GNUNET_SYSERR for simulation
* @param bo block options
* @return publish structure entry for the file
*/
struct GNUNET_FS_FileInformation *
GNUNET_FS_file_information_create_from_reader (struct GNUNET_FS_Handle *h,
void *client_info,
uint64_t length,
GNUNET_FS_DataReader reader,
void *reader_cls,
const struct GNUNET_FS_Uri
*keywords,
const struct
GNUNET_CONTAINER_MetaData *meta,
int do_index,
const struct
GNUNET_FS_BlockOptions *bo)
{
struct GNUNET_FS_FileInformation *ret;
if ((GNUNET_YES == do_index) && (reader != &GNUNET_FS_data_reader_file_))
{
GNUNET_break (0);
return NULL;
}
ret = GNUNET_malloc (sizeof (struct GNUNET_FS_FileInformation));
ret->h = h;
ret->client_info = client_info;
ret->meta = GNUNET_CONTAINER_meta_data_duplicate (meta);
if (ret->meta == NULL)
ret->meta = GNUNET_CONTAINER_meta_data_create ();
ret->keywords = (keywords == NULL) ? NULL : GNUNET_FS_uri_dup (keywords);
ret->data.file.reader = reader;
ret->data.file.reader_cls = reader_cls;
ret->data.file.do_index = do_index;
ret->data.file.file_size = length;
ret->bo = *bo;
return ret;
}
/**
* Create a directory builder.
*
* @param mdir metadata for the directory
*/
struct GNUNET_FS_DirectoryBuilder *
GNUNET_FS_directory_builder_create (const struct GNUNET_CONTAINER_MetaData
*mdir)
{
struct GNUNET_FS_DirectoryBuilder *ret;
ret = GNUNET_malloc (sizeof (struct GNUNET_FS_DirectoryBuilder));
if (mdir != NULL)
ret->meta = GNUNET_CONTAINER_meta_data_duplicate (mdir);
else
ret->meta = GNUNET_CONTAINER_meta_data_create ();
GNUNET_FS_meta_data_make_directory (ret->meta);
return ret;
}
/**
* Start download probes for the given search result.
*
* @param h file-sharing handle to use for the operation
* @param uri URI to probe
* @param meta meta data associated with the URI
* @param client_info client info pointer to use for associated events
* @param anonymity anonymity level to use for the probes
* @return the search result handle to access the probe activity
*/
struct GNUNET_FS_SearchResult *
GNUNET_FS_probe (struct GNUNET_FS_Handle *h,
const struct GNUNET_FS_Uri *uri,
const struct GNUNET_CONTAINER_MetaData *meta,
void *client_info,
uint32_t anonymity)
{
struct GNUNET_FS_SearchResult *sr;
GNUNET_assert (NULL != h);
sr = GNUNET_new (struct GNUNET_FS_SearchResult);
sr->h = h;
sr->uri = GNUNET_FS_uri_dup (uri);
sr->meta = GNUNET_CONTAINER_meta_data_duplicate (meta);
sr->client_info = client_info;
sr->anonymity = anonymity;
GNUNET_FS_search_start_probe_ (sr);
return sr;
}
/**
* We have received a KSK result. Check how it fits in with the
* overall query and notify the client accordingly.
*
* @param sc context for the overall query
* @param ent entry for the specific keyword
* @param uri the URI that was found
* @param meta metadata associated with the URI
* under the @a ent keyword
*/
static void
process_ksk_result (struct GNUNET_FS_SearchContext *sc,
struct SearchRequestEntry *ent,
const struct GNUNET_FS_Uri *uri,
const struct GNUNET_CONTAINER_MetaData *meta)
{
struct GNUNET_HashCode key;
struct GNUNET_FS_SearchResult *sr;
struct GetResultContext grc;
int is_new;
unsigned int koff;
/* check if new */
GNUNET_assert (NULL != sc);
GNUNET_FS_uri_to_key (uri, &key);
if (GNUNET_SYSERR ==
GNUNET_CONTAINER_multihashmap_get_multiple (ent->results, &key,
&test_result_present,
(void *) uri))
return; /* duplicate result */
/* try to find search result in master map */
grc.sr = NULL;
grc.uri = uri;
GNUNET_CONTAINER_multihashmap_get_multiple (sc->master_result_map, &key,
&get_result_present, &grc);
sr = grc.sr;
is_new = (NULL == sr) || (sr->mandatory_missing > 0);
if (NULL == sr)
{
sr = GNUNET_new (struct GNUNET_FS_SearchResult);
sr->h = sc->h;
sr->sc = sc;
sr->anonymity = sc->anonymity;
sr->uri = GNUNET_FS_uri_dup (uri);
sr->meta = GNUNET_CONTAINER_meta_data_duplicate (meta);
sr->mandatory_missing = sc->mandatory_count;
sr->key = key;
sr->keyword_bitmap = GNUNET_malloc ((sc->uri->data.ksk.keywordCount + 7) / 8); /* round up, count bits */
GNUNET_CONTAINER_multihashmap_put (sc->master_result_map, &key, sr,
GNUNET_CONTAINER_MULTIHASHMAPOPTION_MULTIPLE);
}
/**
* Join a chat room.
*
* @param cfg configuration
* @param nick_name nickname of the user joining (used to
* determine which public key to use);
* the nickname should probably also
* be used in the member_info (as "EXTRACTOR_TITLE")
* @param member_info information about the joining member
* @param room_name name of the room
* @param msg_options message options of the joining user
* @param joinCallback function to call on successful join
* @param join_cls closure for joinCallback
* @param messageCallback which function to call if a message has
* been received?
* @param message_cls argument to callback
* @param memberCallback which function to call for join/leave notifications
* @param member_cls argument to callback
* @param confirmationCallback which function to call for confirmations (maybe NULL)
* @param confirmation_cls argument to callback
* @param me member ID (pseudonym)
* @return NULL on error
*/
struct GNUNET_CHAT_Room *
GNUNET_CHAT_join_room (const struct GNUNET_CONFIGURATION_Handle *cfg,
const char *nick_name,
struct GNUNET_CONTAINER_MetaData *member_info,
const char *room_name,
enum GNUNET_CHAT_MsgOptions msg_options,
GNUNET_CHAT_JoinCallback joinCallback, void *join_cls,
GNUNET_CHAT_MessageCallback messageCallback,
void *message_cls,
GNUNET_CHAT_MemberListCallback memberCallback,
void *member_cls,
GNUNET_CHAT_MessageConfirmation confirmationCallback,
void *confirmation_cls, GNUNET_HashCode * me)
{
struct GNUNET_CHAT_Room *chat_room;
struct GNUNET_CRYPTO_RsaPrivateKey *priv_key;
struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded pub_key;
struct GNUNET_CLIENT_Connection *client;
#if DEBUG_CHAT
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Joining the room '%s'\n", room_name);
#endif
priv_key = init_private_key (cfg, nick_name);
if (NULL == priv_key)
return NULL;
GNUNET_CRYPTO_rsa_key_get_public (priv_key, &pub_key);
GNUNET_CRYPTO_hash (&pub_key,
sizeof (struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded),
me);
GNUNET_PSEUDONYM_add (cfg, me, member_info);
client = GNUNET_CLIENT_connect ("chat", cfg);
if (NULL == client)
{
GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
_("Failed to connect to the chat service\n"));
return NULL;
}
if (NULL == joinCallback)
{
GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
_("Undefined mandatory parameter: joinCallback\n"));
return NULL;
}
if (NULL == messageCallback)
{
GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
_("Undefined mandatory parameter: messageCallback\n"));
return NULL;
}
if (NULL == memberCallback)
{
GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
_("Undefined mandatory parameter: memberCallback\n"));
return NULL;
}
chat_room = GNUNET_malloc (sizeof (struct GNUNET_CHAT_Room));
chat_room->msg_options = msg_options;
chat_room->room_name = GNUNET_strdup (room_name);
chat_room->member_info = GNUNET_CONTAINER_meta_data_duplicate (member_info);
chat_room->my_private_key = priv_key;
chat_room->is_joined = GNUNET_NO;
chat_room->join_callback = joinCallback;
chat_room->join_callback_cls = join_cls;
chat_room->message_callback = messageCallback;
chat_room->message_callback_cls = message_cls;
chat_room->member_list_callback = memberCallback;
chat_room->member_list_callback_cls = member_cls;
chat_room->confirmation_callback = confirmationCallback;
chat_room->confirmation_cls = confirmation_cls;
chat_room->cfg = cfg;
chat_room->client = client;
chat_room->members = NULL;
if (GNUNET_SYSERR == rejoin_room (chat_room))
{
GNUNET_CHAT_leave_room (chat_room);
return NULL;
}
return chat_room;
}
/**
* Add an entry to a directory.
*
* @param bld directory to extend
* @param uri uri of the entry (must not be a KSK)
* @param md metadata of the entry
* @param data raw data of the entry, can be NULL, otherwise
* data must point to exactly the number of bytes specified
* by the uri which must be of type LOC or CHK
*/
void
GNUNET_FS_directory_builder_add (struct GNUNET_FS_DirectoryBuilder *bld,
const struct GNUNET_FS_Uri *uri,
const struct GNUNET_CONTAINER_MetaData *md,
const void *data)
{
struct GNUNET_FS_Uri *curi;
struct BuilderEntry *e;
uint64_t fsize;
uint32_t big;
ssize_t ret;
size_t mds;
size_t mdxs;
char *uris;
char *ser;
char *sptr;
size_t slen;
struct GNUNET_CONTAINER_MetaData *meta;
const struct GNUNET_CONTAINER_MetaData *meta_use;
GNUNET_assert (!GNUNET_FS_uri_test_ksk (uri));
if (NULL != data)
{
GNUNET_assert (!GNUNET_FS_uri_test_sks (uri));
if (GNUNET_FS_uri_test_chk (uri))
{
fsize = GNUNET_FS_uri_chk_get_file_size (uri);
}
else
{
curi = GNUNET_FS_uri_loc_get_uri (uri);
GNUNET_assert (NULL != curi);
fsize = GNUNET_FS_uri_chk_get_file_size (curi);
GNUNET_FS_uri_destroy (curi);
}
}
else
{
fsize = 0; /* not given */
}
if (fsize > MAX_INLINE_SIZE)
fsize = 0; /* too large */
uris = GNUNET_FS_uri_to_string (uri);
slen = strlen (uris) + 1;
mds = GNUNET_CONTAINER_meta_data_get_serialized_size (md);
meta_use = md;
meta = NULL;
if (fsize > 0)
{
meta = GNUNET_CONTAINER_meta_data_duplicate (md);
GNUNET_CONTAINER_meta_data_insert (meta, "<gnunet>",
EXTRACTOR_METATYPE_GNUNET_FULL_DATA,
EXTRACTOR_METAFORMAT_BINARY, NULL, data,
fsize);
mdxs = GNUNET_CONTAINER_meta_data_get_serialized_size (meta);
if ((slen + sizeof (uint32_t) + mdxs - 1) / DBLOCK_SIZE ==
(slen + sizeof (uint32_t) + mds - 1) / DBLOCK_SIZE)
{
/* adding full data would not cause us to cross
* additional blocks, so add it! */
meta_use = meta;
mds = mdxs;
}
}
if (mds > GNUNET_MAX_MALLOC_CHECKED / 2)
mds = GNUNET_MAX_MALLOC_CHECKED / 2;
e = GNUNET_malloc (sizeof (struct BuilderEntry) + slen + mds +
sizeof (uint32_t));
ser = (char *) &e[1];
memcpy (ser, uris, slen);
GNUNET_free (uris);
sptr = &ser[slen + sizeof (uint32_t)];
ret =
GNUNET_CONTAINER_meta_data_serialize (meta_use, &sptr, mds,
GNUNET_CONTAINER_META_DATA_SERIALIZE_PART);
if (NULL != meta)
GNUNET_CONTAINER_meta_data_destroy (meta);
if (ret == -1)
mds = 0;
else
mds = ret;
big = htonl (mds);
memcpy (&ser[slen], &big, sizeof (uint32_t));
e->len = slen + sizeof (uint32_t) + mds;
e->next = bld->head;
bld->head = e;
bld->count++;
}
