+/**
+ * Start the given job (send signal, remove from pending queue, update
+ * counters and state).
+ *
+ * @param qe job to start
+ */
+static void
+start_job (struct GNUNET_FS_QueueEntry *qe)
+{
+ GNUNET_assert (NULL == qe->client);
+ qe->client = GNUNET_CLIENT_connect ("fs", qe->h->cfg);
+ if (qe->client == NULL)
+ {
+ GNUNET_break (0);
+ return;
+ }
+ qe->start (qe->cls, qe->client);
+ qe->start_times++;
+ qe->h->active_blocks += qe->blocks;
+ qe->start_time = GNUNET_TIME_absolute_get ();
+ GNUNET_CONTAINER_DLL_remove (qe->h->pending_head, qe->h->pending_tail, qe);
+ GNUNET_CONTAINER_DLL_insert_after (qe->h->running_head, qe->h->running_tail,
+ qe->h->running_tail, qe);
+}
+
+
+/**
+ * Stop the given job (send signal, remove from active queue, update
+ * counters and state).
+ *
+ * @param qe job to stop
+ */
+static void
+stop_job (struct GNUNET_FS_QueueEntry *qe)
+{
+ qe->client = NULL;
+ qe->stop (qe->cls);
+ qe->h->active_downloads--;
+ qe->h->active_blocks -= qe->blocks;
+ qe->run_time =
+ GNUNET_TIME_relative_add (qe->run_time,
+ GNUNET_TIME_absolute_get_duration
+ (qe->start_time));
+ GNUNET_CONTAINER_DLL_remove (qe->h->running_head, qe->h->running_tail, qe);
+ GNUNET_CONTAINER_DLL_insert_after (qe->h->pending_head, qe->h->pending_tail,
+ qe->h->pending_tail, qe);
+}
+
+
+/**
+ * Process the jobs in the job queue, possibly starting some
+ * and stopping others.
+ *
+ * @param cls the 'struct GNUNET_FS_Handle'
+ * @param tc scheduler context
+ */
+static void
+process_job_queue (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
+{
+ struct GNUNET_FS_Handle *h = cls;
+ struct GNUNET_FS_QueueEntry *qe;
+ struct GNUNET_FS_QueueEntry *next;
+ struct GNUNET_TIME_Relative run_time;
+ struct GNUNET_TIME_Relative restart_at;
+ struct GNUNET_TIME_Relative rst;
+ struct GNUNET_TIME_Absolute end_time;
+
+ h->queue_job = GNUNET_SCHEDULER_NO_TASK;
+ next = h->pending_head;
+ while (NULL != (qe = next))
+ {
+ next = qe->next;
+ if (h->running_head == NULL)
+ {
+ start_job (qe);
+ continue;
+ }
+ if ((qe->blocks + h->active_blocks <= h->max_parallel_requests) &&
+ (h->active_downloads + 1 <= h->max_parallel_downloads))
+ {
+ start_job (qe);
+ continue;
+ }
+ }
+ if (h->pending_head == NULL)
+ return; /* no need to stop anything */
+ restart_at = GNUNET_TIME_UNIT_FOREVER_REL;
+ next = h->running_head;
+ while (NULL != (qe = next))
+ {
+ next = qe->next;
+ run_time =
+ GNUNET_TIME_relative_multiply (h->avg_block_latency,
+ qe->blocks * qe->start_times);
+ end_time = GNUNET_TIME_absolute_add (qe->start_time, run_time);
+ rst = GNUNET_TIME_absolute_get_remaining (end_time);
+ restart_at = GNUNET_TIME_relative_min (rst, restart_at);
+ if (rst.rel_value > 0)
+ continue;
+ stop_job (qe);
+ }
+ h->queue_job =
+ GNUNET_SCHEDULER_add_delayed (restart_at, &process_job_queue, h);
+}
+
+
+/**
+ * Add a job to the queue.
+ *
+ * @param h handle to the overall FS state
+ * @param start function to call to begin the job
+ * @param stop function to call to pause the job, or on dequeue (if the job was running)
+ * @param cls closure for start and stop
+ * @param blocks number of blocks this jobs uses
+ * @return queue handle
+ */
+struct GNUNET_FS_QueueEntry *
+GNUNET_FS_queue_ (struct GNUNET_FS_Handle *h, GNUNET_FS_QueueStart start,
+ GNUNET_FS_QueueStop stop, void *cls, unsigned int blocks)
+{
+ struct GNUNET_FS_QueueEntry *qe;
+
+ qe = GNUNET_malloc (sizeof (struct GNUNET_FS_QueueEntry));
+ qe->h = h;
+ qe->start = start;
+ qe->stop = stop;
+ qe->cls = cls;
+ qe->queue_time = GNUNET_TIME_absolute_get ();
+ qe->blocks = blocks;
+ GNUNET_CONTAINER_DLL_insert_after (h->pending_head, h->pending_tail,
+ h->pending_tail, qe);
+ if (h->queue_job != GNUNET_SCHEDULER_NO_TASK)
+ GNUNET_SCHEDULER_cancel (h->queue_job);
+ h->queue_job = GNUNET_SCHEDULER_add_now (&process_job_queue, h);
+ return qe;
+}
+
+
+/**
+ * Dequeue a job from the queue.
+ * @param qh handle for the job
+ */
+void
+GNUNET_FS_dequeue_ (struct GNUNET_FS_QueueEntry *qh)
+{
+ struct GNUNET_FS_Handle *h;
+
+ h = qh->h;
+ if (qh->client != NULL)
+ stop_job (qh);
+ GNUNET_CONTAINER_DLL_remove (h->pending_head, h->pending_tail, qh);
+ GNUNET_free (qh);
+ if (h->queue_job != GNUNET_SCHEDULER_NO_TASK)
+ GNUNET_SCHEDULER_cancel (h->queue_job);
+ h->queue_job = GNUNET_SCHEDULER_add_now (&process_job_queue, h);
+}
+
+
+/**
+ * Create a top-level activity entry.
+ *
+ * @param h global fs handle
+ * @param ssf suspend signal function to use
+ * @param ssf_cls closure for ssf
+ * @return fresh top-level activity handle
+ */
+struct TopLevelActivity *
+GNUNET_FS_make_top (struct GNUNET_FS_Handle *h, SuspendSignalFunction ssf,
+ void *ssf_cls)
+{
+ struct TopLevelActivity *ret;
+
+ ret = GNUNET_malloc (sizeof (struct TopLevelActivity));
+ ret->ssf = ssf;
+ ret->ssf_cls = ssf_cls;
+ GNUNET_CONTAINER_DLL_insert (h->top_head, h->top_tail, ret);
+ return ret;
+}
+
+
+/**
+ * Destroy a top-level activity entry.
+ *
+ * @param h global fs handle
+ * @param top top level activity entry
+ */
+void
+GNUNET_FS_end_top (struct GNUNET_FS_Handle *h, struct TopLevelActivity *top)
+{
+ GNUNET_CONTAINER_DLL_remove (h->top_head, h->top_tail, top);
+ GNUNET_free (top);
+}
+
+
+
+/**
+ * Closure for "data_reader_file".
+ */
+struct FileInfo
+{
+ /**
+ * Name of the file to read.
+ */
+ char *filename;
+
+ /**
+ * File descriptor, NULL if it has not yet been opened.
+ */
+ struct GNUNET_DISK_FileHandle *fd;
+};
+
+
+/**
+ * Function that provides data by reading from a file.
+ *
+ * @param cls closure (points to the file information)
+ * @param offset offset to read from; it is possible
+ * that the caller might need to go backwards
+ * a bit at times
+ * @param max maximum number of bytes that should be
+ * copied to buf; readers are not allowed
+ * to provide less data unless there is an error;
+ * a value of "0" will be used at the end to allow
+ * the reader to clean up its internal state
+ * @param buf where the reader should write the data
+ * @param emsg location for the reader to store an error message
+ * @return number of bytes written, usually "max", 0 on error
+ */
+size_t
+GNUNET_FS_data_reader_file_ (void *cls, uint64_t offset, size_t max, void *buf,
+ char **emsg)
+{
+ struct FileInfo *fi = cls;
+ ssize_t ret;
+
+ if (max == 0)
+ {
+ if (fi->fd != NULL)
+ GNUNET_DISK_file_close (fi->fd);
+ GNUNET_free (fi->filename);
+ GNUNET_free (fi);
+ return 0;
+ }
+ if (fi->fd == NULL)
+ {
+ fi->fd =
+ GNUNET_DISK_file_open (fi->filename, GNUNET_DISK_OPEN_READ,
+ GNUNET_DISK_PERM_NONE);
+ if (fi->fd == NULL)
+ {
+ GNUNET_asprintf (emsg, _("Could not open file `%s': %s"), fi->filename,
+ STRERROR (errno));
+ return 0;
+ }
+ }
+ GNUNET_DISK_file_seek (fi->fd, offset, GNUNET_DISK_SEEK_SET);
+ ret = GNUNET_DISK_file_read (fi->fd, buf, max);
+ if (ret == -1)
+ {
+ GNUNET_asprintf (emsg, _("Could not read file `%s': %s"), fi->filename,
+ STRERROR (errno));
+ return 0;
+ }
+ if (ret != max)
+ {
+ GNUNET_asprintf (emsg, _("Short read reading from file `%s'!"),
+ fi->filename);
+ return 0;
+ }
+ return max;
+}
+
+
+/**
+ * Create the closure for the 'GNUNET_FS_data_reader_file_' callback.
+ *
+ * @param filename file to read
+ * @return closure to use, NULL on error
+ */
+void *
+GNUNET_FS_make_file_reader_context_ (const char *filename)
+{
+ struct FileInfo *fi;
+
+ fi = GNUNET_malloc (sizeof (struct FileInfo));
+ fi->filename = GNUNET_STRINGS_filename_expand (filename);
+ if (fi->filename == NULL)
+ {
+ GNUNET_free (fi);
+ return NULL;
+ }
+ return fi;
+}
+
+
+/**
+ * Function that provides data by copying from a buffer.
+ *
+ * @param cls closure (points to the buffer)
+ * @param offset offset to read from; it is possible
+ * that the caller might need to go backwards
+ * a bit at times
+ * @param max maximum number of bytes that should be
+ * copied to buf; readers are not allowed
+ * to provide less data unless there is an error;
+ * a value of "0" will be used at the end to allow
+ * the reader to clean up its internal state
+ * @param buf where the reader should write the data
+ * @param emsg location for the reader to store an error message
+ * @return number of bytes written, usually "max", 0 on error
+ */
+size_t
+GNUNET_FS_data_reader_copy_ (void *cls, uint64_t offset, size_t max, void *buf,
+ char **emsg)
+{
+ char *data = cls;
+
+ if (max == 0)
+ {
+ GNUNET_free_non_null (data);
+ return 0;
+ }
+ memcpy (buf, &data[offset], max);
+ return max;
+}
+
+
+/**
+ * Return the full filename where we would store state information
+ * (for serialization/deserialization).
+ *
+ * @param h master context
+ * @param ext component of the path
+ * @param ent entity identifier (or emtpy string for the directory)
+ * @return NULL on error
+ */
+static char *
+get_serialization_file_name (struct GNUNET_FS_Handle *h, const char *ext,
+ const char *ent)
+{
+ char *basename;
+ char *ret;
+
+ if (0 == (h->flags & GNUNET_FS_FLAGS_PERSISTENCE))
+ return NULL; /* persistence not requested */
+ if (GNUNET_OK !=
+ GNUNET_CONFIGURATION_get_value_filename (h->cfg, "fs", "STATE_DIR",
+ &basename))
+ return NULL;
+ GNUNET_asprintf (&ret, "%s%s%s%s%s%s%s", basename, DIR_SEPARATOR_STR,
+ h->client_name, DIR_SEPARATOR_STR, ext, DIR_SEPARATOR_STR,
+ ent);
+ GNUNET_free (basename);
+ return ret;
+}
+
+
+/**
+ * Return the full filename where we would store state information
+ * (for serialization/deserialization) that is associated with a
+ * parent operation.
+ *
+ * @param h master context
+ * @param ext component of the path
+ * @param uni name of the parent operation
+ * @param ent entity identifier (or emtpy string for the directory)
+ * @return NULL on error
+ */
+static char *
+get_serialization_file_name_in_dir (struct GNUNET_FS_Handle *h, const char *ext,
+ const char *uni, const char *ent)
+{
+ char *basename;
+ char *ret;
+
+ if (0 == (h->flags & GNUNET_FS_FLAGS_PERSISTENCE))
+ return NULL; /* persistence not requested */
+ if (GNUNET_OK !=
+ GNUNET_CONFIGURATION_get_value_filename (h->cfg, "fs", "STATE_DIR",
+ &basename))
+ return NULL;
+ GNUNET_asprintf (&ret, "%s%s%s%s%s%s%s.dir%s%s", basename, DIR_SEPARATOR_STR,
+ h->client_name, DIR_SEPARATOR_STR, ext, DIR_SEPARATOR_STR,
+ uni, DIR_SEPARATOR_STR, ent);
+ GNUNET_free (basename);
+ return ret;
+}
+
+
+/**
+ * Return a read handle for deserialization.
+ *
+ * @param h master context
+ * @param ext component of the path
+ * @param ent entity identifier (or emtpy string for the directory)
+ * @return NULL on error
+ */
+static struct GNUNET_BIO_ReadHandle *
+get_read_handle (struct GNUNET_FS_Handle *h, const char *ext, const char *ent)
+{
+ char *fn;
+ struct GNUNET_BIO_ReadHandle *ret;
+
+ fn = get_serialization_file_name (h, ext, ent);
+ if (fn == NULL)
+ return NULL;
+ ret = GNUNET_BIO_read_open (fn);
+ GNUNET_free (fn);
+ return ret;
+}
+
+
+/**
+ * Return a write handle for serialization.
+ *
+ * @param h master context
+ * @param ext component of the path
+ * @param ent entity identifier (or emtpy string for the directory)
+ * @return NULL on error
+ */
+static struct GNUNET_BIO_WriteHandle *
+get_write_handle (struct GNUNET_FS_Handle *h, const char *ext, const char *ent)
+{
+ char *fn;
+ struct GNUNET_BIO_WriteHandle *ret;
+
+ fn = get_serialization_file_name (h, ext, ent);
+ if (fn == NULL)
+ {
+ return NULL;
+ }
+ ret = GNUNET_BIO_write_open (fn);
+ if (ret == NULL)
+ GNUNET_break (0);
+ GNUNET_free (fn);
+ return ret;
+}
+
+
+/**
+ * Return a write handle for serialization.
+ *
+ * @param h master context
+ * @param ext component of the path
+ * @param uni name of parent
+ * @param ent entity identifier (or emtpy string for the directory)
+ * @return NULL on error
+ */
+static struct GNUNET_BIO_WriteHandle *
+get_write_handle_in_dir (struct GNUNET_FS_Handle *h, const char *ext,
+ const char *uni, const char *ent)
+{
+ char *fn;
+ struct GNUNET_BIO_WriteHandle *ret;
+
+ fn = get_serialization_file_name_in_dir (h, ext, uni, ent);
+ if (fn == NULL)
+ return NULL;
+ ret = GNUNET_BIO_write_open (fn);
+ GNUNET_free (fn);
+ return ret;
+}
+
+
+/**
+ * Remove serialization/deserialization file from disk.
+ *
+ * @param h master context
+ * @param ext component of the path
+ * @param ent entity identifier
+ */
+void
+GNUNET_FS_remove_sync_file_ (struct GNUNET_FS_Handle *h, const char *ext,
+ const char *ent)
+{
+ char *filename;
+
+ if ((NULL == ent) || (0 == strlen (ent)))
+ {
+ GNUNET_break (0);
+ return;
+ }
+ filename = get_serialization_file_name (h, ext, ent);
+ if (filename != NULL)
+ {
+ if (0 != UNLINK (filename))
+ GNUNET_log_strerror_file (GNUNET_ERROR_TYPE_WARNING, "unlink", filename);
+ GNUNET_free (filename);
+ }
+}
+
+
+/**
+ * Remove serialization/deserialization file from disk.
+ *
+ * @param h master context
+ * @param ext component of the path
+ * @param uni parent name
+ * @param ent entity identifier
+ */
+static void
+remove_sync_file_in_dir (struct GNUNET_FS_Handle *h, const char *ext,
+ const char *uni, const char *ent)
+{
+ char *filename;
+
+ if ((NULL == ent) || (0 == strlen (ent)))
+ {
+ GNUNET_break (0);
+ return;
+ }
+ filename = get_serialization_file_name_in_dir (h, ext, uni, ent);
+ if (filename != NULL)
+ {
+ if (0 != UNLINK (filename))
+ GNUNET_log_strerror_file (GNUNET_ERROR_TYPE_WARNING, "unlink", filename);
+ GNUNET_free (filename);
+ }
+}
+
+
+/**
+ * Remove serialization/deserialization directory from disk.
+ *
+ * @param h master context
+ * @param ext component of the path
+ * @param uni unique name of parent
+ */
+void
+GNUNET_FS_remove_sync_dir_ (struct GNUNET_FS_Handle *h, const char *ext,
+ const char *uni)
+{
+ char *dn;
+
+ if (uni == NULL)
+ return;
+ dn = get_serialization_file_name_in_dir (h, ext, uni, "");
+ if (dn == NULL)
+ return;
+ if ((GNUNET_OK == GNUNET_DISK_directory_test (dn)) &&
+ (GNUNET_OK != GNUNET_DISK_directory_remove (dn)))
+ GNUNET_log_strerror_file (GNUNET_ERROR_TYPE_WARNING, "rmdir", dn);
+ GNUNET_free (dn);
+}
+
+
+/**
+ * Serialize a 'start_time'. Since we use start-times to
+ * calculate the duration of some operation, we actually
+ * do not serialize the absolute time but the (relative)
+ * duration since the start time. When we then
+ * deserialize the start time, we take the current time and
+ * subtract that duration so that we get again an absolute
+ * time stamp that will result in correct performance
+ * calculations.
+ *
+ * @param wh handle for writing
+ * @param timestamp time to serialize
+ * @return GNUNET_OK on success
+ */
+static int
+write_start_time (struct GNUNET_BIO_WriteHandle *wh,
+ struct GNUNET_TIME_Absolute timestamp)
+{
+ struct GNUNET_TIME_Relative dur;
+
+ dur = GNUNET_TIME_absolute_get_duration (timestamp);
+ return GNUNET_BIO_write_int64 (wh, dur.rel_value);
+}
+
+
+/**
+ * Serialize a 'start_time'. Since we use start-times to
+ * calculate the duration of some operation, we actually
+ * do not serialize the absolute time but the (relative)
+ * duration since the start time. When we then
+ * deserialize the start time, we take the current time and
+ * subtract that duration so that we get again an absolute
+ * time stamp that will result in correct performance
+ * calculations.
+ *
+ * @param rh handle for reading
+ * @param timestamp where to write the deserialized timestamp
+ * @return GNUNET_OK on success
+ */
+static int
+read_start_time (struct GNUNET_BIO_ReadHandle *rh,
+ struct GNUNET_TIME_Absolute *timestamp)
+{
+ struct GNUNET_TIME_Relative dur;
+
+ if (GNUNET_OK != GNUNET_BIO_read_int64 (rh, &dur.rel_value))
+ return GNUNET_SYSERR;
+ *timestamp = GNUNET_TIME_absolute_subtract (GNUNET_TIME_absolute_get (), dur);
+ return GNUNET_OK;
+}
+
+
+/**
+ * Using the given serialization filename, try to deserialize
+ * the file-information tree associated with it.
+ *
+ * @param h master context
+ * @param filename name of the file (without directory) with
+ * the infromation
+ * @return NULL on error
+ */
+static struct GNUNET_FS_FileInformation *
+deserialize_file_information (struct GNUNET_FS_Handle *h, const char *filename);
+
+
+/**
+ * Using the given serialization filename, try to deserialize
+ * the file-information tree associated with it.
+ *
+ * @param h master context
+ * @param fn name of the file (without directory) with
+ * the infromation
+ * @param rh handle for reading
+ * @return NULL on error
+ */
+static struct GNUNET_FS_FileInformation *
+deserialize_fi_node (struct GNUNET_FS_Handle *h, const char *fn,
+ struct GNUNET_BIO_ReadHandle *rh)
+{
+ struct GNUNET_FS_FileInformation *ret;
+ struct GNUNET_FS_FileInformation *nxt;
+ char b;
+ char *ksks;
+ char *chks;
+ char *filename;
+ uint32_t dsize;
+
+ if (GNUNET_OK != GNUNET_BIO_read (rh, "status flag", &b, sizeof (b)))
+ {
+ GNUNET_break (0);
+ return NULL;
+ }
+ ret = GNUNET_malloc (sizeof (struct GNUNET_FS_FileInformation));
+ ret->h = h;
+ ksks = NULL;
+ chks = NULL;
+ filename = NULL;
+ if ((GNUNET_OK != GNUNET_BIO_read_meta_data (rh, "metadata", &ret->meta)) ||
+ (GNUNET_OK != GNUNET_BIO_read_string (rh, "ksk-uri", &ksks, 32 * 1024)) ||
+ ((ksks != NULL) &&
+ (NULL == (ret->keywords = GNUNET_FS_uri_parse (ksks, NULL)))) ||
+ (GNUNET_YES != GNUNET_FS_uri_test_ksk (ret->keywords)) ||
+ (GNUNET_OK != GNUNET_BIO_read_string (rh, "chk-uri", &chks, 1024)) ||
+ ((chks != NULL) &&
+ ((NULL == (ret->chk_uri = GNUNET_FS_uri_parse (chks, NULL))) ||
+ (GNUNET_YES != GNUNET_FS_uri_test_chk (ret->chk_uri)))) ||
+ (GNUNET_OK != read_start_time (rh, &ret->start_time)) ||
+ (GNUNET_OK != GNUNET_BIO_read_string (rh, "emsg", &ret->emsg, 16 * 1024))
+ || (GNUNET_OK !=
+ GNUNET_BIO_read_string (rh, "fn", &ret->filename, 16 * 1024)) ||
+ (GNUNET_OK !=
+ GNUNET_BIO_read_int64 (rh, &ret->bo.expiration_time.abs_value)) ||
+ (GNUNET_OK != GNUNET_BIO_read_int32 (rh, &ret->bo.anonymity_level)) ||
+ (GNUNET_OK != GNUNET_BIO_read_int32 (rh, &ret->bo.content_priority)) ||
+ (GNUNET_OK != GNUNET_BIO_read_int32 (rh, &ret->bo.replication_level)))
+ {
+ GNUNET_break (0);
+ goto cleanup;
+ }
+ switch (b)
+ {
+ case 0: /* file-insert */
+ if (GNUNET_OK != GNUNET_BIO_read_int64 (rh, &ret->data.file.file_size))
+ {
+ GNUNET_break (0);
+ goto cleanup;
+ }
+ ret->is_directory = GNUNET_NO;
+ ret->data.file.do_index = GNUNET_NO;
+ ret->data.file.have_hash = GNUNET_NO;
+ ret->data.file.index_start_confirmed = GNUNET_NO;
+ if (GNUNET_NO == ret->is_published)
+ {
+ if (NULL == ret->filename)
+ {
+ ret->data.file.reader = &GNUNET_FS_data_reader_copy_;
+ ret->data.file.reader_cls =
+ GNUNET_malloc_large (ret->data.file.file_size);
+ if (ret->data.file.reader_cls == NULL)
+ goto cleanup;
+ if (GNUNET_OK !=
+ GNUNET_BIO_read (rh, "file-data", ret->data.file.reader_cls,
+ ret->data.file.file_size))
+ {
+ GNUNET_break (0);
+ goto cleanup;
+ }
+ }
+ else
+ {
+ ret->data.file.reader = &GNUNET_FS_data_reader_file_;
+ ret->data.file.reader_cls =
+ GNUNET_FS_make_file_reader_context_ (ret->filename);
+ }
+ }
+ break;
+ case 1: /* file-index, no hash */
+ if (NULL == ret->filename)
+ {
+ GNUNET_break (0);
+ goto cleanup;
+ }
+ if (GNUNET_OK != GNUNET_BIO_read_int64 (rh, &ret->data.file.file_size))
+ {
+ GNUNET_break (0);
+ goto cleanup;
+ }
+ ret->is_directory = GNUNET_NO;
+ ret->data.file.do_index = GNUNET_YES;
+ ret->data.file.have_hash = GNUNET_NO;
+ ret->data.file.index_start_confirmed = GNUNET_NO;
+ ret->data.file.reader = &GNUNET_FS_data_reader_file_;
+ ret->data.file.reader_cls =
+ GNUNET_FS_make_file_reader_context_ (ret->filename);
+ break;
+ case 2: /* file-index-with-hash */
+ if (NULL == ret->filename)
+ {
+ GNUNET_break (0);
+ goto cleanup;
+ }
+ if ((GNUNET_OK != GNUNET_BIO_read_int64 (rh, &ret->data.file.file_size)) ||
+ (GNUNET_OK !=
+ GNUNET_BIO_read (rh, "fileid", &ret->data.file.file_id,
+ sizeof (GNUNET_HashCode))))
+ {
+ GNUNET_break (0);
+ goto cleanup;
+ }
+ ret->is_directory = GNUNET_NO;
+ ret->data.file.do_index = GNUNET_YES;
+ ret->data.file.have_hash = GNUNET_YES;
+ ret->data.file.index_start_confirmed = GNUNET_NO;
+ ret->data.file.reader = &GNUNET_FS_data_reader_file_;
+ ret->data.file.reader_cls =
+ GNUNET_FS_make_file_reader_context_ (ret->filename);
+ break;
+ case 3: /* file-index-with-hash-confirmed */
+ if (NULL == ret->filename)
+ {
+ GNUNET_break (0);
+ goto cleanup;
+ }
+ if ((GNUNET_OK != GNUNET_BIO_read_int64 (rh, &ret->data.file.file_size)) ||
+ (GNUNET_OK !=
+ GNUNET_BIO_read (rh, "fileid", &ret->data.file.file_id,
+ sizeof (GNUNET_HashCode))))
+ {
+ GNUNET_break (0);
+ goto cleanup;
+ }
+ ret->is_directory = GNUNET_NO;
+ ret->data.file.do_index = GNUNET_YES;
+ ret->data.file.have_hash = GNUNET_YES;
+ ret->data.file.index_start_confirmed = GNUNET_YES;
+ ret->data.file.reader = &GNUNET_FS_data_reader_file_;
+ ret->data.file.reader_cls =
+ GNUNET_FS_make_file_reader_context_ (ret->filename);
+ break;
+ case 4: /* directory */
+ ret->is_directory = GNUNET_YES;
+ if ((GNUNET_OK != GNUNET_BIO_read_int32 (rh, &dsize)) ||
+ (NULL == (ret->data.dir.dir_data = GNUNET_malloc_large (dsize))) ||
+ (GNUNET_OK !=
+ GNUNET_BIO_read (rh, "dir-data", ret->data.dir.dir_data, dsize)) ||
+ (GNUNET_OK !=
+ GNUNET_BIO_read_string (rh, "ent-filename", &filename, 16 * 1024)))
+ {
+ GNUNET_break (0);
+ goto cleanup;
+ }
+ ret->data.dir.dir_size = (uint32_t) dsize;
+ if (filename != NULL)
+ {
+ ret->data.dir.entries = deserialize_file_information (h, filename);
+ GNUNET_free (filename);
+ filename = NULL;
+ nxt = ret->data.dir.entries;
+ while (nxt != NULL)
+ {
+ nxt->dir = ret;
+ nxt = nxt->next;
+ }
+ }
+ break;
+ default:
+ GNUNET_break (0);
+ goto cleanup;
+ }
+ ret->serialization = GNUNET_strdup (fn);
+ if (GNUNET_OK !=
+ GNUNET_BIO_read_string (rh, "nxt-filename", &filename, 16 * 1024))
+ {
+ GNUNET_break (0);
+ goto cleanup;
+ }
+ if (filename != NULL)
+ {
+ ret->next = deserialize_file_information (h, filename);
+ GNUNET_free (filename);
+ filename = NULL;
+ }
+ GNUNET_free_non_null (ksks);
+ GNUNET_free_non_null (chks);
+ return ret;
+cleanup:
+ GNUNET_free_non_null (ksks);
+ GNUNET_free_non_null (chks);
+ GNUNET_free_non_null (filename);
+ GNUNET_FS_file_information_destroy (ret, NULL, NULL);
+ return NULL;
+}
+
+
+/**
+ * Using the given serialization filename, try to deserialize
+ * the file-information tree associated with it.
+ *
+ * @param h master context
+ * @param filename name of the file (without directory) with
+ * the infromation
+ * @return NULL on error
+ */
+static struct GNUNET_FS_FileInformation *
+deserialize_file_information (struct GNUNET_FS_Handle *h, const char *filename)
+{
+ struct GNUNET_FS_FileInformation *ret;
+ struct GNUNET_BIO_ReadHandle *rh;
+ char *emsg;
+
+ rh = get_read_handle (h, GNUNET_FS_SYNC_PATH_FILE_INFO, filename);
+ if (rh == NULL)
+ return NULL;
+ ret = deserialize_fi_node (h, filename, rh);
+ if (GNUNET_OK != GNUNET_BIO_read_close (rh, &emsg))
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
+ _("Failed to resume publishing information `%s': %s\n"),
+ filename, emsg);
+ GNUNET_free (emsg);
+ }
+ if (ret == NULL)
+ {
+ if (0 != UNLINK (filename))
+ GNUNET_log_strerror_file (GNUNET_ERROR_TYPE_WARNING, "unlink", filename);
+ }
+ return ret;
+}
+
+
+/**
+ * Given a serialization name (full absolute path), return the
+ * basename of the file (without the path), which must only
+ * consist of the 6 random characters.
+ *
+ * @param fullname name to extract the basename from
+ * @return copy of the basename, NULL on error
+ */
+static char *
+get_serialization_short_name (const char *fullname)
+{
+ const char *end;
+ const char *nxt;
+
+ end = NULL;
+ nxt = fullname;
+ /* FIXME: we could do this faster since we know
+ * the length of 'end'... */
+ while ('\0' != *nxt)
+ {
+ if (DIR_SEPARATOR == *nxt)
+ end = nxt + 1;
+ nxt++;
+ }
+ if ((end == NULL) || (strlen (end) == 0))
+ {
+ GNUNET_break (0);
+ return NULL;
+ }
+ GNUNET_break (6 == strlen (end));
+ return GNUNET_strdup (end);
+}
+
+
+/**
+ * Create a new random name for serialization. Also checks if persistence
+ * is enabled and returns NULL if not.
+ *
+ * @param h master context
+ * @param ext component of the path
+ * @return NULL on errror
+ */
+static char *
+make_serialization_file_name (struct GNUNET_FS_Handle *h, const char *ext)
+{
+ char *fn;
+ char *dn;
+ char *ret;
+
+ if (0 == (h->flags & GNUNET_FS_FLAGS_PERSISTENCE))
+ return NULL; /* persistence not requested */
+ dn = get_serialization_file_name (h, ext, "");
+ if (dn == NULL)
+ return NULL;
+ if (GNUNET_OK != GNUNET_DISK_directory_create_for_file (dn))
+ {
+ GNUNET_free (dn);
+ return NULL;
+ }
+ fn = GNUNET_DISK_mktemp (dn);
+ GNUNET_free (dn);
+ if (fn == NULL)
+ return NULL; /* epic fail */
+ ret = get_serialization_short_name (fn);
+ GNUNET_free (fn);
+ return ret;
+}
+
+
+/**
+ * Create a new random name for serialization. Also checks if persistence
+ * is enabled and returns NULL if not.
+ *
+ * @param h master context
+ * @param ext component of the path
+ * @param uni name of parent
+ * @return NULL on errror
+ */
+static char *
+make_serialization_file_name_in_dir (struct GNUNET_FS_Handle *h,
+ const char *ext, const char *uni)
+{
+ char *fn;
+ char *dn;
+ char *ret;
+
+ if (0 == (h->flags & GNUNET_FS_FLAGS_PERSISTENCE))
+ return NULL; /* persistence not requested */
+ dn = get_serialization_file_name_in_dir (h, ext, uni, "");
+ if (dn == NULL)
+ return NULL;
+ if (GNUNET_OK != GNUNET_DISK_directory_create_for_file (dn))
+ {
+ GNUNET_free (dn);
+ return NULL;
+ }
+ fn = GNUNET_DISK_mktemp (dn);
+ GNUNET_free (dn);
+ if (fn == NULL)
+ return NULL; /* epic fail */
+ ret = get_serialization_short_name (fn);
+ GNUNET_free (fn);
+ return ret;
+}
+
+
+/**
+ * Copy all of the data from the reader to the write handle.
+ *
+ * @param wh write handle
+ * @param fi file with reader
+ * @return GNUNET_OK on success
+ */
+static int
+copy_from_reader (struct GNUNET_BIO_WriteHandle *wh,
+ struct GNUNET_FS_FileInformation *fi)
+{
+ char buf[32 * 1024];
+ uint64_t off;
+ size_t ret;
+ size_t left;
+ char *emsg;
+
+ emsg = NULL;
+ off = 0;
+ while (off < fi->data.file.file_size)
+ {
+ left = GNUNET_MIN (sizeof (buf), fi->data.file.file_size - off);
+ ret =
+ fi->data.file.reader (fi->data.file.reader_cls, off, left, buf, &emsg);
+ if (ret == 0)
+ {
+ GNUNET_free (emsg);
+ return GNUNET_SYSERR;
+ }
+ if (GNUNET_OK != GNUNET_BIO_write (wh, buf, ret))
+ return GNUNET_SYSERR;
+ off += ret;
+ }
+ return GNUNET_OK;
+}
+
+
+/**
+ * Create a temporary file on disk to store the current
+ * state of "fi" in.
+ *
+ * @param fi file information to sync with disk
+ */
+void
+GNUNET_FS_file_information_sync_ (struct GNUNET_FS_FileInformation *fi)
+{
+ char *fn;
+ struct GNUNET_BIO_WriteHandle *wh;
+ char b;
+ char *ksks;
+ char *chks;
+
+ if (NULL == fi->serialization)
+ fi->serialization =
+ make_serialization_file_name (fi->h, GNUNET_FS_SYNC_PATH_FILE_INFO);
+ if (NULL == fi->serialization)
+ return;
+ wh = get_write_handle (fi->h, GNUNET_FS_SYNC_PATH_FILE_INFO,
+ fi->serialization);
+ if (wh == NULL)
+ {
+ GNUNET_free (fi->serialization);
+ fi->serialization = NULL;
+ return;
+ }
+ if (GNUNET_YES == fi->is_directory)
+ b = 4;
+ else if (GNUNET_YES == fi->data.file.index_start_confirmed)
+ b = 3;
+ else if (GNUNET_YES == fi->data.file.have_hash)
+ b = 2;
+ else if (GNUNET_YES == fi->data.file.do_index)
+ b = 1;
+ else
+ b = 0;
+ if (fi->keywords != NULL)
+ ksks = GNUNET_FS_uri_to_string (fi->keywords);
+ else
+ ksks = NULL;
+ if (fi->chk_uri != NULL)
+ chks = GNUNET_FS_uri_to_string (fi->chk_uri);
+ else
+ chks = NULL;
+ if ((GNUNET_OK != GNUNET_BIO_write (wh, &b, sizeof (b))) ||
+ (GNUNET_OK != GNUNET_BIO_write_meta_data (wh, fi->meta)) ||
+ (GNUNET_OK != GNUNET_BIO_write_string (wh, ksks)) ||
+ (GNUNET_OK != GNUNET_BIO_write_string (wh, chks)) ||
+ (GNUNET_OK != write_start_time (wh, fi->start_time)) ||
+ (GNUNET_OK != GNUNET_BIO_write_string (wh, fi->emsg)) ||
+ (GNUNET_OK != GNUNET_BIO_write_string (wh, fi->filename)) ||
+ (GNUNET_OK !=
+ GNUNET_BIO_write_int64 (wh, fi->bo.expiration_time.abs_value)) ||
+ (GNUNET_OK != GNUNET_BIO_write_int32 (wh, fi->bo.anonymity_level)) ||
+ (GNUNET_OK != GNUNET_BIO_write_int32 (wh, fi->bo.content_priority)) ||
+ (GNUNET_OK != GNUNET_BIO_write_int32 (wh, fi->bo.replication_level)))
+ {
+ GNUNET_break (0);
+ goto cleanup;
+ }
+ GNUNET_free_non_null (chks);
+ chks = NULL;
+ GNUNET_free_non_null (ksks);
+ ksks = NULL;
+
+ switch (b)
+ {
+ case 0: /* file-insert */
+ if (GNUNET_OK != GNUNET_BIO_write_int64 (wh, fi->data.file.file_size))
+ {
+ GNUNET_break (0);
+ goto cleanup;
+ }
+ if ((GNUNET_NO == fi->is_published) && (NULL == fi->filename))
+ if (GNUNET_OK != copy_from_reader (wh, fi))
+ {
+ GNUNET_break (0);
+ goto cleanup;
+ }
+ break;
+ case 1: /* file-index, no hash */
+ if (NULL == fi->filename)
+ {
+ GNUNET_break (0);
+ goto cleanup;
+ }
+ if (GNUNET_OK != GNUNET_BIO_write_int64 (wh, fi->data.file.file_size))
+ {
+ GNUNET_break (0);
+ goto cleanup;
+ }
+ break;
+ case 2: /* file-index-with-hash */
+ case 3: /* file-index-with-hash-confirmed */
+ if (NULL == fi->filename)
+ {
+ GNUNET_break (0);
+ goto cleanup;
+ }
+ if ((GNUNET_OK != GNUNET_BIO_write_int64 (wh, fi->data.file.file_size)) ||
+ (GNUNET_OK !=
+ GNUNET_BIO_write (wh, &fi->data.file.file_id,
+ sizeof (GNUNET_HashCode))))
+ {
+ GNUNET_break (0);
+ goto cleanup;
+ }
+ break;
+ case 4: /* directory */
+ if ((GNUNET_OK != GNUNET_BIO_write_int32 (wh, fi->data.dir.dir_size)) ||
+ (GNUNET_OK !=
+ GNUNET_BIO_write (wh, fi->data.dir.dir_data,
+ (uint32_t) fi->data.dir.dir_size)) ||
+ (GNUNET_OK !=
+ GNUNET_BIO_write_string (wh,
+ (fi->data.dir.entries ==
+ NULL) ? NULL : fi->data.dir.
+ entries->serialization)))
+ {
+ GNUNET_break (0);
+ goto cleanup;
+ }
+ break;
+ default:
+ GNUNET_assert (0);
+ goto cleanup;
+ }
+ if (GNUNET_OK !=
+ GNUNET_BIO_write_string (wh,
+ (fi->next !=
+ NULL) ? fi->next->serialization : NULL))
+ {
+ GNUNET_break (0);
+ goto cleanup;
+ }
+ if (GNUNET_OK != GNUNET_BIO_write_close (wh))
+ {
+ wh = NULL;
+ GNUNET_break (0);
+ goto cleanup;
+ }
+ return; /* done! */
+cleanup:
+ if (wh != NULL)
+ (void) GNUNET_BIO_write_close (wh);
+ GNUNET_free_non_null (chks);
+ GNUNET_free_non_null (ksks);
+ fn = get_serialization_file_name (fi->h, GNUNET_FS_SYNC_PATH_FILE_INFO,
+ fi->serialization);
+ if (NULL != fn)
+ {
+ if (0 != UNLINK (fn))
+ GNUNET_log_strerror_file (GNUNET_ERROR_TYPE_WARNING, "unlink", fn);
+ GNUNET_free (fn);
+ }
+ GNUNET_free (fi->serialization);
+ fi->serialization = NULL;
+}
+
+
+
+/**
+ * Find the entry in the file information struct where the
+ * serialization filename matches the given name.
+ *
+ * @param pos file information to search
+ * @param srch filename to search for
+ * @return NULL if srch was not found in this subtree
+ */
+static struct GNUNET_FS_FileInformation *
+find_file_position (struct GNUNET_FS_FileInformation *pos, const char *srch)
+{
+ struct GNUNET_FS_FileInformation *r;
+
+ while (pos != NULL)
+ {
+ if (0 == strcmp (srch, pos->serialization))
+ return pos;
+ if (pos->is_directory)
+ {
+ r = find_file_position (pos->data.dir.entries, srch);
+ if (r != NULL)
+ return r;
+ }
+ pos = pos->next;
+ }
+ return NULL;
+}
+
+
+/**
+ * Signal the FS's progress function that we are resuming
+ * an upload.
+ *
+ * @param cls closure (of type "struct GNUNET_FS_PublishContext*")
+ * @param fi the entry in the publish-structure
+ * @param length length of the file or directory
+ * @param meta metadata for the file or directory (can be modified)
+ * @param uri pointer to the keywords that will be used for this entry (can be modified)
+ * @param bo block options (can be modified)
+ * @param do_index should we index?
+ * @param client_info pointer to client context set upon creation (can be modified)
+ * @return GNUNET_OK to continue (always)
+ */
+static int
+fip_signal_resume (void *cls, struct GNUNET_FS_FileInformation *fi,
+ uint64_t length, struct GNUNET_CONTAINER_MetaData *meta,
+ struct GNUNET_FS_Uri **uri,
+ struct GNUNET_FS_BlockOptions *bo, int *do_index,
+ void **client_info)
+{
+ struct GNUNET_FS_PublishContext *sc = cls;
+ struct GNUNET_FS_ProgressInfo pi;
+
+ pi.status = GNUNET_FS_STATUS_PUBLISH_RESUME;
+ pi.value.publish.specifics.resume.message = sc->fi->emsg;
+ pi.value.publish.specifics.resume.chk_uri = sc->fi->chk_uri;
+ *client_info = GNUNET_FS_publish_make_status_ (&pi, sc, fi, 0);
+ return GNUNET_OK;
+}
+
+
+/**
+ * Function called with a filename of serialized publishing operation
+ * to deserialize.
+ *
+ * @param cls the 'struct GNUNET_FS_Handle*'
+ * @param filename complete filename (absolute path)
+ * @return GNUNET_OK (continue to iterate)
+ */
+static int
+deserialize_publish_file (void *cls, const char *filename)
+{
+ struct GNUNET_FS_Handle *h = cls;
+ struct GNUNET_BIO_ReadHandle *rh;
+ struct GNUNET_FS_PublishContext *pc;
+ int32_t options;
+ int32_t all_done;
+ char *fi_root;
+ char *ns;
+ char *fi_pos;
+ char *emsg;
+
+ pc = GNUNET_malloc (sizeof (struct GNUNET_FS_PublishContext));
+ pc->h = h;
+ pc->serialization = get_serialization_short_name (filename);
+ fi_root = NULL;
+ fi_pos = NULL;
+ ns = NULL;
+ rh = GNUNET_BIO_read_open (filename);
+ if (rh == NULL)
+ {
+ GNUNET_break (0);
+ goto cleanup;
+ }
+ if ((GNUNET_OK != GNUNET_BIO_read_string (rh, "publish-nid", &pc->nid, 1024))
+ || (GNUNET_OK !=
+ GNUNET_BIO_read_string (rh, "publish-nuid", &pc->nuid, 1024)) ||
+ (GNUNET_OK != GNUNET_BIO_read_int32 (rh, &options)) ||
+ (GNUNET_OK != GNUNET_BIO_read_int32 (rh, &all_done)) ||
+ (GNUNET_OK !=
+ GNUNET_BIO_read_string (rh, "publish-firoot", &fi_root, 128)) ||
+ (GNUNET_OK != GNUNET_BIO_read_string (rh, "publish-fipos", &fi_pos, 128))
+ || (GNUNET_OK != GNUNET_BIO_read_string (rh, "publish-ns", &ns, 1024)))
+ {
+ GNUNET_break (0);
+ goto cleanup;
+ }
+ pc->options = options;
+ pc->all_done = all_done;
+ if (NULL == fi_root)
+ {
+ GNUNET_break (0);
+ goto cleanup;
+ }
+ pc->fi = deserialize_file_information (h, fi_root);
+ if (pc->fi == NULL)
+ {
+ GNUNET_break (0);
+ goto cleanup;
+ }
+ if (ns != NULL)
+ {
+ pc->namespace = GNUNET_FS_namespace_create (h, ns);
+ if (pc->namespace == NULL)
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
+ _
+ ("Failed to recover namespace `%s', cannot resume publishing operation.\n"),
+ ns);
+ goto cleanup;
+ }
+ }
+ if ((0 == (pc->options & GNUNET_FS_PUBLISH_OPTION_SIMULATE_ONLY)) &&
+ (GNUNET_YES != pc->all_done))
+ {
+ pc->dsh = GNUNET_DATASTORE_connect (h->cfg);
+ if (NULL == pc->dsh)
+ goto cleanup;
+ }
+ if (fi_pos != NULL)
+ {
+ pc->fi_pos = find_file_position (pc->fi, fi_pos);
+ GNUNET_free (fi_pos);
+ fi_pos = NULL;
+ if (pc->fi_pos == NULL)
+ {
+ /* failed to find position for resuming, outch! Will start from root! */
+ GNUNET_break (0);
+ if (pc->all_done != GNUNET_YES)
+ pc->fi_pos = pc->fi;
+ }
+ }
+ GNUNET_free (fi_root);
+ fi_root = NULL;
+ /* generate RESUME event(s) */
+ GNUNET_FS_file_information_inspect (pc->fi, &fip_signal_resume, pc);
+
+ /* re-start publishing (if needed)... */
+ if (pc->all_done != GNUNET_YES)
+ {
+ GNUNET_assert (GNUNET_SCHEDULER_NO_TASK == pc->upload_task);
+ pc->upload_task =
+ GNUNET_SCHEDULER_add_with_priority
+ (GNUNET_SCHEDULER_PRIORITY_BACKGROUND, &GNUNET_FS_publish_main_, pc);
+ }
+ if (GNUNET_OK != GNUNET_BIO_read_close (rh, &emsg))
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
+ _("Failure while resuming publishing operation `%s': %s\n"),
+ filename, emsg);
+ GNUNET_free (emsg);
+ }
+ GNUNET_free_non_null (ns);
+ pc->top = GNUNET_FS_make_top (h, &GNUNET_FS_publish_signal_suspend_, pc);
+ return GNUNET_OK;
+cleanup:
+ GNUNET_free_non_null (pc->nid);
+ GNUNET_free_non_null (pc->nuid);
+ GNUNET_free_non_null (fi_root);
+ GNUNET_free_non_null (fi_pos);
+ GNUNET_free_non_null (ns);
+ if ((rh != NULL) && (GNUNET_OK != GNUNET_BIO_read_close (rh, &emsg)))
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
+ _("Failed to resume publishing operation `%s': %s\n"), filename,
+ emsg);
+ GNUNET_free (emsg);
+ }
+ if (pc->fi != NULL)
+ GNUNET_FS_file_information_destroy (pc->fi, NULL, NULL);
+ if (0 != UNLINK (filename))
+ GNUNET_log_strerror_file (GNUNET_ERROR_TYPE_WARNING, "unlink", filename);
+ GNUNET_free (pc->serialization);
+ GNUNET_free (pc);
+ return GNUNET_OK;
+}
+
+
+/**
+ * Synchronize this publishing struct with its mirror
+ * on disk. Note that all internal FS-operations that change
+ * publishing structs should already call "sync" internally,
+ * so this function is likely not useful for clients.
+ *
+ * @param pc the struct to sync
+ */
+void
+GNUNET_FS_publish_sync_ (struct GNUNET_FS_PublishContext *pc)
+{
+ struct GNUNET_BIO_WriteHandle *wh;
+
+ if (NULL == pc->serialization)
+ pc->serialization =
+ make_serialization_file_name (pc->h,
+ GNUNET_FS_SYNC_PATH_MASTER_PUBLISH);
+ if (NULL == pc->serialization)
+ return;
+ if (NULL == pc->fi)
+ return;
+ if (NULL == pc->fi->serialization)
+ {
+ GNUNET_break (0);
+ return;
+ }
+ wh = get_write_handle (pc->h, GNUNET_FS_SYNC_PATH_MASTER_PUBLISH,
+ pc->serialization);
+ if (wh == NULL)
+ {
+ GNUNET_break (0);
+ goto cleanup;
+ }
+ if ((GNUNET_OK != GNUNET_BIO_write_string (wh, pc->nid)) ||
+ (GNUNET_OK != GNUNET_BIO_write_string (wh, pc->nuid)) ||
+ (GNUNET_OK != GNUNET_BIO_write_int32 (wh, pc->options)) ||
+ (GNUNET_OK != GNUNET_BIO_write_int32 (wh, pc->all_done)) ||
+ (GNUNET_OK != GNUNET_BIO_write_string (wh, pc->fi->serialization)) ||
+ (GNUNET_OK !=
+ GNUNET_BIO_write_string (wh,
+ (pc->fi_pos ==
+ NULL) ? NULL : pc->fi_pos->serialization)) ||
+ (GNUNET_OK !=
+ GNUNET_BIO_write_string (wh,
+ (pc->namespace ==
+ NULL) ? NULL : pc->namespace->name)))
+ {
+ GNUNET_break (0);
+ goto cleanup;
+ }
+ if (GNUNET_OK != GNUNET_BIO_write_close (wh))
+ {
+ wh = NULL;
+ GNUNET_break (0);
+ goto cleanup;
+ }
+ return;
+cleanup:
+ if (wh != NULL)
+ (void) GNUNET_BIO_write_close (wh);
+ GNUNET_FS_remove_sync_file_ (pc->h, GNUNET_FS_SYNC_PATH_MASTER_PUBLISH,
+ pc->serialization);
+ GNUNET_free (pc->serialization);
+ pc->serialization = NULL;
+}
+
+
+/**
+ * Synchronize this unindex struct with its mirror
+ * on disk. Note that all internal FS-operations that change
+ * publishing structs should already call "sync" internally,
+ * so this function is likely not useful for clients.
+ *
+ * @param uc the struct to sync
+ */
+void
+GNUNET_FS_unindex_sync_ (struct GNUNET_FS_UnindexContext *uc)
+{
+ struct GNUNET_BIO_WriteHandle *wh;
+
+ if (NULL == uc->serialization)
+ uc->serialization =
+ make_serialization_file_name (uc->h,
+ GNUNET_FS_SYNC_PATH_MASTER_UNINDEX);
+ if (NULL == uc->serialization)
+ return;
+ wh = get_write_handle (uc->h, GNUNET_FS_SYNC_PATH_MASTER_UNINDEX,
+ uc->serialization);
+ if (wh == NULL)
+ {
+ GNUNET_break (0);
+ goto cleanup;
+ }
+ if ((GNUNET_OK != GNUNET_BIO_write_string (wh, uc->filename)) ||
+ (GNUNET_OK != GNUNET_BIO_write_int64 (wh, uc->file_size)) ||
+ (GNUNET_OK != write_start_time (wh, uc->start_time)) ||
+ (GNUNET_OK != GNUNET_BIO_write_int32 (wh, (uint32_t) uc->state)) ||
+ ((uc->state == UNINDEX_STATE_FS_NOTIFY) &&
+ (GNUNET_OK !=
+ GNUNET_BIO_write (wh, &uc->file_id, sizeof (GNUNET_HashCode)))) ||
+ ((uc->state == UNINDEX_STATE_ERROR) &&
+ (GNUNET_OK != GNUNET_BIO_write_string (wh, uc->emsg))))
+ {
+ GNUNET_break (0);
+ goto cleanup;
+ }
+ if (GNUNET_OK != GNUNET_BIO_write_close (wh))
+ {
+ wh = NULL;
+ GNUNET_break (0);
+ goto cleanup;
+ }
+ return;
+cleanup:
+ if (wh != NULL)
+ (void) GNUNET_BIO_write_close (wh);
+ GNUNET_FS_remove_sync_file_ (uc->h, GNUNET_FS_SYNC_PATH_MASTER_UNINDEX,
+ uc->serialization);
+ GNUNET_free (uc->serialization);
+ uc->serialization = NULL;
+}
+
+
+/**
+ * Serialize a download request.
+ *
+ * @param wh the 'struct GNUNET_BIO_WriteHandle*'
+ * @param dr the 'struct DownloadRequest'
+ * @return GNUNET_YES on success, GNUNET_NO on error
+ */
+static int
+write_download_request (struct GNUNET_BIO_WriteHandle *wh,
+ struct DownloadRequest *dr)
+{
+ unsigned int i;
+
+ if ((GNUNET_OK != GNUNET_BIO_write_int32 (wh, dr->state)) ||
+ (GNUNET_OK != GNUNET_BIO_write_int64 (wh, dr->offset)) ||
+ (GNUNET_OK != GNUNET_BIO_write_int32 (wh, dr->num_children)) ||
+ (GNUNET_OK != GNUNET_BIO_write_int32 (wh, dr->depth)))
+ return GNUNET_NO;
+ if ((dr->state == BRS_CHK_SET) &&
+ (GNUNET_OK !=
+ GNUNET_BIO_write (wh, &dr->chk, sizeof (struct ContentHashKey))))
+ return GNUNET_NO;
+ for (i = 0; i < dr->num_children; i++)
+ if (GNUNET_NO == write_download_request (wh, dr->children[i]))
+ return GNUNET_NO;
+ return GNUNET_YES;
+}
+
+
+/**
+ * Read a download request tree.
+ *
+ * @param rh stream to read from
+ * @return value the 'struct DownloadRequest', NULL on error
+ */
+static struct DownloadRequest *
+read_download_request (struct GNUNET_BIO_ReadHandle *rh)
+{
+ struct DownloadRequest *dr;
+ unsigned int i;
+
+ dr = GNUNET_malloc (sizeof (struct DownloadRequest));
+
+ if ((GNUNET_OK != GNUNET_BIO_read_int32 (rh, &dr->state)) ||
+ (GNUNET_OK != GNUNET_BIO_read_int64 (rh, &dr->offset)) ||
+ (GNUNET_OK != GNUNET_BIO_read_int32 (rh, &dr->num_children)) ||
+ (dr->num_children > CHK_PER_INODE) ||
+ (GNUNET_OK != GNUNET_BIO_read_int32 (rh, &dr->depth)) || ((dr->depth == 0)
+ &&
+ (dr->num_children
+ > 0)) ||
+ ((dr->depth > 0) && (dr->num_children == 0)))
+ {
+ GNUNET_break (0);
+ dr->num_children = 0;
+ goto cleanup;
+ }
+ if (dr->num_children > 0)
+ dr->children =
+ GNUNET_malloc (dr->num_children * sizeof (struct ContentHashKey));
+ switch (dr->state)
+ {
+ case BRS_INIT:
+ case BRS_RECONSTRUCT_DOWN:
+ case BRS_RECONSTRUCT_META_UP:
+ case BRS_RECONSTRUCT_UP:
+ break;
+ case BRS_CHK_SET:
+ if (GNUNET_OK !=
+ GNUNET_BIO_read (rh, "chk", &dr->chk, sizeof (struct ContentHashKey)))
+ goto cleanup;
+ break;
+ case BRS_DOWNLOAD_DOWN:
+ case BRS_DOWNLOAD_UP:
+ case BRS_ERROR:
+ break;
+ default:
+ GNUNET_break (0);
+ goto cleanup;
+ }
+ for (i = 0; i < dr->num_children; i++)
+ {
+ if (NULL == (dr->children[i] = read_download_request (rh)))
+ goto cleanup;
+ dr->children[i]->parent = dr;
+ }
+ return dr;
+cleanup:
+ GNUNET_FS_free_download_request_ (dr);
+ return NULL;
+}
+
+
+/**
+ * Compute the name of the sync file (or directory) for the given download
+ * context.
+ *
+ * @param dc download context to compute for
+ * @param uni unique filename to use, use "" for the directory name
+ * @param ext extension to use, use ".dir" for our own subdirectory
+ * @return the expanded file name, NULL for none
+ */
+static char *
+get_download_sync_filename (struct GNUNET_FS_DownloadContext *dc,
+ const char *uni, const char *ext)
+{
+ char *par;
+ char *epar;
+
+ if (dc->parent == NULL)
+ return get_serialization_file_name (dc->h,
+ (dc->search !=
+ NULL) ?
+ GNUNET_FS_SYNC_PATH_CHILD_DOWNLOAD :
+ GNUNET_FS_SYNC_PATH_MASTER_DOWNLOAD,
+ uni);
+ if (dc->parent->serialization == NULL)
+ return NULL;
+ par = get_download_sync_filename (dc->parent, dc->parent->serialization, "");
+ if (par == NULL)
+ return NULL;
+ GNUNET_asprintf (&epar, "%s.dir%s%s%s", par, DIR_SEPARATOR_STR, uni, ext);
+ GNUNET_free (par);
+ return epar;
+}
+
+
+/**
+ * Synchronize this download struct with its mirror
+ * on disk. Note that all internal FS-operations that change
+ * publishing structs should already call "sync" internally,
+ * so this function is likely not useful for clients.
+ *
+ * @param dc the struct to sync
+ */
+void
+GNUNET_FS_download_sync_ (struct GNUNET_FS_DownloadContext *dc)
+{
+ struct GNUNET_BIO_WriteHandle *wh;
+ char *uris;
+ char *fn;
+ char *dir;
+
+ if (NULL == dc->serialization)
+ {
+ dir = get_download_sync_filename (dc, "", "");
+ if (dir == NULL)
+ return;
+ if (GNUNET_OK != GNUNET_DISK_directory_create_for_file (dir))
+ {
+ GNUNET_free (dir);
+ return;
+ }
+ fn = GNUNET_DISK_mktemp (dir);
+ GNUNET_free (dir);
+ if (fn == NULL)
+ return;
+ dc->serialization = get_serialization_short_name (fn);
+ }
+ else
+ {
+ fn = get_download_sync_filename (dc, dc->serialization, "");
+ if (fn == NULL)
+ {
+ GNUNET_free (dc->serialization);
+ dc->serialization = NULL;
+ GNUNET_free (fn);
+ return;
+ }
+ }
+ wh = GNUNET_BIO_write_open (fn);
+ if (wh == NULL)
+ {
+ GNUNET_free (dc->serialization);
+ dc->serialization = NULL;
+ GNUNET_free (fn);
+ return;
+ }
+ GNUNET_assert ((GNUNET_YES == GNUNET_FS_uri_test_chk (dc->uri)) ||
+ (GNUNET_YES == GNUNET_FS_uri_test_loc (dc->uri)));
+ uris = GNUNET_FS_uri_to_string (dc->uri);
+ if ((GNUNET_OK != GNUNET_BIO_write_string (wh, uris)) ||
+ (GNUNET_OK != GNUNET_BIO_write_meta_data (wh, dc->meta)) ||
+ (GNUNET_OK != GNUNET_BIO_write_string (wh, dc->emsg)) ||
+ (GNUNET_OK != GNUNET_BIO_write_string (wh, dc->filename)) ||
+ (GNUNET_OK != GNUNET_BIO_write_string (wh, dc->temp_filename)) ||
+ (GNUNET_OK != GNUNET_BIO_write_int64 (wh, dc->old_file_size)) ||
+ (GNUNET_OK != GNUNET_BIO_write_int64 (wh, dc->offset)) ||
+ (GNUNET_OK != GNUNET_BIO_write_int64 (wh, dc->length)) ||
+ (GNUNET_OK != GNUNET_BIO_write_int64 (wh, dc->completed)) ||
+ (GNUNET_OK != write_start_time (wh, dc->start_time)) ||
+ (GNUNET_OK != GNUNET_BIO_write_int32 (wh, dc->anonymity)) ||
+ (GNUNET_OK != GNUNET_BIO_write_int32 (wh, (uint32_t) dc->options)) ||
+ (GNUNET_OK != GNUNET_BIO_write_int32 (wh, (uint32_t) dc->has_finished)))
+ {
+ GNUNET_break (0);
+ goto cleanup;
+ }
+ if (NULL == dc->emsg)
+ {
+ GNUNET_assert (dc->top_request != NULL);
+ if (GNUNET_YES != write_download_request (wh, dc->top_request))
+ {
+ GNUNET_break (0);
+ goto cleanup;
+ }
+ }
+ GNUNET_free_non_null (uris);
+ uris = NULL;
+ if (GNUNET_OK != GNUNET_BIO_write_close (wh))
+ {
+ wh = NULL;
+ GNUNET_break (0);
+ goto cleanup;
+ }
+ GNUNET_free (fn);
+ return;
+cleanup:
+ if (NULL != wh)
+ (void) GNUNET_BIO_write_close (wh);
+ GNUNET_free_non_null (uris);
+ if (0 != UNLINK (fn))
+ GNUNET_log_strerror_file (GNUNET_ERROR_TYPE_WARNING, "unlink", fn);
+ GNUNET_free (fn);
+ GNUNET_free (dc->serialization);
+ dc->serialization = NULL;
+}
+
+
+/**
+ * Synchronize this search result with its mirror
+ * on disk. Note that all internal FS-operations that change
+ * publishing structs should already call "sync" internally,
+ * so this function is likely not useful for clients.
+ *
+ * @param sr the struct to sync
+ */
+void
+GNUNET_FS_search_result_sync_ (struct GNUNET_FS_SearchResult *sr)
+{
+ struct GNUNET_BIO_WriteHandle *wh;
+ char *uris;
+
+ uris = NULL;
+ if (NULL == sr->serialization)
+ sr->serialization =
+ make_serialization_file_name_in_dir (sr->sc->h,
+ (sr->sc->psearch_result ==
+ NULL) ?
+ GNUNET_FS_SYNC_PATH_MASTER_SEARCH :
+ GNUNET_FS_SYNC_PATH_CHILD_SEARCH,
+ sr->sc->serialization);
+ if (NULL == sr->serialization)
+ return;
+ wh = get_write_handle_in_dir (sr->sc->h,
+ (sr->sc->psearch_result ==
+ NULL) ? GNUNET_FS_SYNC_PATH_MASTER_SEARCH :
+ GNUNET_FS_SYNC_PATH_CHILD_SEARCH,
+ sr->sc->serialization, sr->serialization);
+ if (wh == NULL)
+ {
+ GNUNET_break (0);
+ goto cleanup;
+ }
+ uris = GNUNET_FS_uri_to_string (sr->uri);
+ if ((GNUNET_OK != GNUNET_BIO_write_string (wh, uris)) ||
+ (GNUNET_OK !=
+ GNUNET_BIO_write_string (wh,
+ sr->download !=
+ NULL ? sr->download->serialization : NULL)) ||
+ (GNUNET_OK !=
+ GNUNET_BIO_write_string (wh,
+ sr->update_search !=
+ NULL ? sr->update_search->serialization : NULL))
+ || (GNUNET_OK != GNUNET_BIO_write_meta_data (wh, sr->meta)) ||
+ (GNUNET_OK != GNUNET_BIO_write (wh, &sr->key, sizeof (GNUNET_HashCode)))
+ || (GNUNET_OK != GNUNET_BIO_write_int32 (wh, sr->mandatory_missing)) ||
+ (GNUNET_OK != GNUNET_BIO_write_int32 (wh, sr->optional_support)) ||
+ (GNUNET_OK != GNUNET_BIO_write_int32 (wh, sr->availability_success)) ||
+ (GNUNET_OK != GNUNET_BIO_write_int32 (wh, sr->availability_trials)))
+ {
+ GNUNET_break (0);
+ goto cleanup;
+ }
+ if (GNUNET_OK != GNUNET_BIO_write_close (wh))
+ {
+ wh = NULL;
+ GNUNET_break (0);
+ goto cleanup;
+ }
+ GNUNET_free_non_null (uris);
+ return;
+cleanup:
+ GNUNET_free_non_null (uris);
+ if (wh != NULL)
+ (void) GNUNET_BIO_write_close (wh);
+ remove_sync_file_in_dir (sr->sc->h,
+ (sr->sc->psearch_result ==
+ NULL) ? GNUNET_FS_SYNC_PATH_MASTER_SEARCH :
+ GNUNET_FS_SYNC_PATH_CHILD_SEARCH,
+ sr->sc->serialization, sr->serialization);
+ GNUNET_free (sr->serialization);
+ sr->serialization = NULL;
+}
+
+
+/**
+ * Synchronize this search struct with its mirror
+ * on disk. Note that all internal FS-operations that change
+ * publishing structs should already call "sync" internally,
+ * so this function is likely not useful for clients.
+ *
+ * @param sc the struct to sync
+ */
+void
+GNUNET_FS_search_sync_ (struct GNUNET_FS_SearchContext *sc)
+{
+ struct GNUNET_BIO_WriteHandle *wh;
+ char *uris;
+ char in_pause;
+ const char *category;
+
+ category =
+ (sc->psearch_result ==
+ NULL) ? GNUNET_FS_SYNC_PATH_MASTER_SEARCH :
+ GNUNET_FS_SYNC_PATH_CHILD_SEARCH;
+ if (NULL == sc->serialization)
+ sc->serialization = make_serialization_file_name (sc->h, category);
+ if (NULL == sc->serialization)
+ return;
+ uris = NULL;
+ wh = get_write_handle (sc->h, category, sc->serialization);
+ if (wh == NULL)
+ {
+ GNUNET_break (0);
+ goto cleanup;
+ }
+ GNUNET_assert ((GNUNET_YES == GNUNET_FS_uri_test_ksk (sc->uri)) ||
+ (GNUNET_YES == GNUNET_FS_uri_test_sks (sc->uri)));
+ uris = GNUNET_FS_uri_to_string (sc->uri);
+ in_pause = (sc->task != GNUNET_SCHEDULER_NO_TASK) ? 'r' : '\0';
+ if ((GNUNET_OK != GNUNET_BIO_write_string (wh, uris)) ||
+ (GNUNET_OK != write_start_time (wh, sc->start_time)) ||
+ (GNUNET_OK != GNUNET_BIO_write_string (wh, sc->emsg)) ||
+ (GNUNET_OK != GNUNET_BIO_write_int32 (wh, (uint32_t) sc->options)) ||
+ (GNUNET_OK != GNUNET_BIO_write (wh, &in_pause, sizeof (in_pause))) ||
+ (GNUNET_OK != GNUNET_BIO_write_int32 (wh, sc->anonymity)))
+ {
+ GNUNET_break (0);
+ goto cleanup;
+ }
+ GNUNET_free (uris);
+ uris = NULL;
+ if (GNUNET_OK != GNUNET_BIO_write_close (wh))
+ {
+ wh = NULL;
+ GNUNET_break (0);
+ goto cleanup;
+ }
+ return;
+cleanup:
+ if (wh != NULL)
+ (void) GNUNET_BIO_write_close (wh);
+ GNUNET_free_non_null (uris);
+ GNUNET_FS_remove_sync_file_ (sc->h, category, sc->serialization);
+ GNUNET_free (sc->serialization);
+ sc->serialization = NULL;
+}
+
+
+/**
+ * Function called with a filename of serialized unindexing operation
+ * to deserialize.
+ *
+ * @param cls the 'struct GNUNET_FS_Handle*'
+ * @param filename complete filename (absolute path)
+ * @return GNUNET_OK (continue to iterate)
+ */
+static int
+deserialize_unindex_file (void *cls, const char *filename)
+{
+ struct GNUNET_FS_Handle *h = cls;
+ struct GNUNET_BIO_ReadHandle *rh;
+ struct GNUNET_FS_UnindexContext *uc;
+ struct GNUNET_FS_ProgressInfo pi;
+ char *emsg;
+ uint32_t state;
+
+ uc = GNUNET_malloc (sizeof (struct GNUNET_FS_UnindexContext));
+ uc->h = h;
+ uc->serialization = get_serialization_short_name (filename);
+ rh = GNUNET_BIO_read_open (filename);
+ if (rh == NULL)
+ {
+ GNUNET_break (0);
+ goto cleanup;
+ }
+ if ((GNUNET_OK !=
+ GNUNET_BIO_read_string (rh, "unindex-fn", &uc->filename, 10 * 1024)) ||
+ (GNUNET_OK != GNUNET_BIO_read_int64 (rh, &uc->file_size)) ||
+ (GNUNET_OK != read_start_time (rh, &uc->start_time)) ||
+ (GNUNET_OK != GNUNET_BIO_read_int32 (rh, &state)))
+ {
+ GNUNET_break (0);
+ goto cleanup;
+ }
+ uc->state = (enum UnindexState) state;
+ switch (state)
+ {
+ case UNINDEX_STATE_HASHING:
+ break;
+ case UNINDEX_STATE_FS_NOTIFY:
+ if (GNUNET_OK !=
+ GNUNET_BIO_read (rh, "unindex-hash", &uc->file_id,
+ sizeof (GNUNET_HashCode)))
+ {
+ GNUNET_break (0);
+ goto cleanup;
+ }
+ break;
+ case UNINDEX_STATE_DS_REMOVE:
+ break;
+ case UNINDEX_STATE_COMPLETE:
+ break;
+ case UNINDEX_STATE_ERROR:
+ if (GNUNET_OK !=
+ GNUNET_BIO_read_string (rh, "unindex-emsg", &uc->emsg, 10 * 1024))
+ {
+ GNUNET_break (0);
+ goto cleanup;
+ }
+ break;
+ default:
+ GNUNET_break (0);
+ goto cleanup;
+ }
+ uc->top = GNUNET_FS_make_top (h, &GNUNET_FS_unindex_signal_suspend_, uc);
+ pi.status = GNUNET_FS_STATUS_UNINDEX_RESUME;
+ pi.value.unindex.specifics.resume.message = uc->emsg;
+ GNUNET_FS_unindex_make_status_ (&pi, uc,
+ (uc->state ==
+ UNINDEX_STATE_COMPLETE) ? uc->file_size : 0);
+ switch (uc->state)
+ {
+ case UNINDEX_STATE_HASHING:
+ uc->fhc =
+ GNUNET_CRYPTO_hash_file (GNUNET_SCHEDULER_PRIORITY_IDLE, uc->filename,
+ HASHING_BLOCKSIZE,
+ &GNUNET_FS_unindex_process_hash_, uc);
+ break;
+ case UNINDEX_STATE_FS_NOTIFY:
+ uc->state = UNINDEX_STATE_HASHING;
+ GNUNET_FS_unindex_process_hash_ (uc, &uc->file_id);
+ break;
+ case UNINDEX_STATE_DS_REMOVE:
+ GNUNET_FS_unindex_do_remove_ (uc);
+ break;
+ case UNINDEX_STATE_COMPLETE:
+ case UNINDEX_STATE_ERROR:
+ /* no need to resume any operation, we were done */
+ break;
+ default:
+ break;
+ }
+ if (GNUNET_OK != GNUNET_BIO_read_close (rh, &emsg))
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
+ _("Failure while resuming unindexing operation `%s': %s\n"),
+ filename, emsg);
+ GNUNET_free (emsg);
+ }
+ return GNUNET_OK;
+cleanup:
+ GNUNET_free_non_null (uc->filename);
+ if ((rh != NULL) && (GNUNET_OK != GNUNET_BIO_read_close (rh, &emsg)))
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
+ _("Failed to resume unindexing operation `%s': %s\n"), filename,
+ emsg);
+ GNUNET_free (emsg);
+ }
+ if (uc->serialization != NULL)
+ GNUNET_FS_remove_sync_file_ (h, GNUNET_FS_SYNC_PATH_MASTER_UNINDEX,
+ uc->serialization);
+ GNUNET_free_non_null (uc->serialization);
+ GNUNET_free (uc);
+ return GNUNET_OK;
+}
+
+
+/**
+ * Deserialize a download.
+ *
+ * @param h overall context
+ * @param rh file to deserialize from
+ * @param parent parent download
+ * @param search associated search
+ * @param serialization name under which the search was serialized
+ */
+static void
+deserialize_download (struct GNUNET_FS_Handle *h,
+ struct GNUNET_BIO_ReadHandle *rh,
+ struct GNUNET_FS_DownloadContext *parent,
+ struct GNUNET_FS_SearchResult *search,
+ const char *serialization);
+
+
+/**
+ * Deserialize a search.
+ *
+ * @param h overall context
+ * @param rh file to deserialize from
+ * @param psearch_result parent search result
+ * @param serialization name under which the search was serialized
+ */
+static struct GNUNET_FS_SearchContext *
+deserialize_search (struct GNUNET_FS_Handle *h,
+ struct GNUNET_BIO_ReadHandle *rh,
+ struct GNUNET_FS_SearchResult *psearch_result,
+ const char *serialization);
+
+
+/**
+ * Function called with a filename of serialized search result
+ * to deserialize.
+ *
+ * @param cls the 'struct GNUNET_FS_SearchContext*'
+ * @param filename complete filename (absolute path)
+ * @return GNUNET_OK (continue to iterate)
+ */
+static int
+deserialize_search_result (void *cls, const char *filename)
+{
+ struct GNUNET_FS_SearchContext *sc = cls;
+ char *ser;
+ char *uris;
+ char *emsg;
+ char *download;
+ char *update_srch;
+ struct GNUNET_BIO_ReadHandle *rh;
+ struct GNUNET_BIO_ReadHandle *drh;
+ struct GNUNET_FS_SearchResult *sr;
+
+ ser = get_serialization_short_name (filename);
+ rh = GNUNET_BIO_read_open (filename);
+ if (rh == NULL)
+ {
+ if (ser != NULL)
+ {
+ remove_sync_file_in_dir (sc->h,
+ (sc->psearch_result ==
+ NULL) ? GNUNET_FS_SYNC_PATH_MASTER_SEARCH :
+ GNUNET_FS_SYNC_PATH_CHILD_SEARCH,
+ sc->serialization, ser);
+ GNUNET_free (ser);
+ }
+ return GNUNET_OK;
+ }
+ emsg = NULL;
+ uris = NULL;
+ download = NULL;
+ update_srch = NULL;
+ sr = GNUNET_malloc (sizeof (struct GNUNET_FS_SearchResult));
+ sr->serialization = ser;
+ if ((GNUNET_OK != GNUNET_BIO_read_string (rh, "result-uri", &uris, 10 * 1024))
+ || (NULL == (sr->uri = GNUNET_FS_uri_parse (uris, &emsg))) ||
+ (GNUNET_OK != GNUNET_BIO_read_string (rh, "download-lnk", &download, 16))
+ || (GNUNET_OK !=
+ GNUNET_BIO_read_string (rh, "search-lnk", &update_srch, 16)) ||
+ (GNUNET_OK != GNUNET_BIO_read_meta_data (rh, "result-meta", &sr->meta)) ||
+ (GNUNET_OK !=
+ GNUNET_BIO_read (rh, "result-key", &sr->key, sizeof (GNUNET_HashCode)))
+ || (GNUNET_OK != GNUNET_BIO_read_int32 (rh, &sr->mandatory_missing)) ||
+ (GNUNET_OK != GNUNET_BIO_read_int32 (rh, &sr->optional_support)) ||
+ (GNUNET_OK != GNUNET_BIO_read_int32 (rh, &sr->availability_success)) ||
+ (GNUNET_OK != GNUNET_BIO_read_int32 (rh, &sr->availability_trials)))
+ {
+ GNUNET_break (0);
+ goto cleanup;
+ }
+ GNUNET_free (uris);
+ if (download != NULL)
+ {
+ drh = get_read_handle (sc->h, GNUNET_FS_SYNC_PATH_CHILD_DOWNLOAD, download);
+ if (drh != NULL)
+ {
+ deserialize_download (sc->h, drh, NULL, sr, download);
+ if (GNUNET_OK != GNUNET_BIO_read_close (drh, &emsg))
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
+ _("Failed to resume sub-download `%s': %s\n"), download,
+ emsg);
+ GNUNET_free (emsg);
+ }
+ }
+ GNUNET_free (download);
+ }
+ if (update_srch != NULL)
+ {
+ drh =
+ get_read_handle (sc->h, GNUNET_FS_SYNC_PATH_CHILD_SEARCH, update_srch);
+ if (drh != NULL)
+ {
+ deserialize_search (sc->h, drh, sr, update_srch);
+ if (GNUNET_OK != GNUNET_BIO_read_close (drh, &emsg))
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
+ _("Failed to resume sub-search `%s': %s\n"), update_srch,
+ emsg);
+ GNUNET_free (emsg);
+ }
+ }
+ GNUNET_free (update_srch);
+ }
+ GNUNET_CONTAINER_multihashmap_put (sc->master_result_map, &sr->key, sr,
+ GNUNET_CONTAINER_MULTIHASHMAPOPTION_MULTIPLE);
+ if (GNUNET_OK != GNUNET_BIO_read_close (rh, &emsg))
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
+ _("Failure while resuming search operation `%s': %s\n"),
+ filename, emsg);
+ GNUNET_free (emsg);
+ }
+ return GNUNET_OK;
+cleanup:
+ GNUNET_free_non_null (download);
+ GNUNET_free_non_null (emsg);
+ GNUNET_free_non_null (uris);
+ GNUNET_free_non_null (update_srch);
+ if (sr->uri != NULL)
+ GNUNET_FS_uri_destroy (sr->uri);
+ if (sr->meta != NULL)
+ GNUNET_CONTAINER_meta_data_destroy (sr->meta);
+ GNUNET_free (sr->serialization);
+ GNUNET_free (sr);
+ if (GNUNET_OK != GNUNET_BIO_read_close (rh, &emsg))
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
+ _("Failure while resuming search operation `%s': %s\n"),
+ filename, emsg);
+ GNUNET_free (emsg);
+ }
+ return GNUNET_OK;
+}
+
+
+/**
+ * Send the 'resume' signal to the callback; also actually
+ * resume the download (put it in the queue). Does this
+ * recursively for the top-level download and all child
+ * downloads.
+ *
+ * @param dc download to resume
+ */
+static void
+signal_download_resume (struct GNUNET_FS_DownloadContext *dc)
+{
+ struct GNUNET_FS_DownloadContext *dcc;
+ struct GNUNET_FS_ProgressInfo pi;
+
+ pi.status = GNUNET_FS_STATUS_DOWNLOAD_RESUME;
+ pi.value.download.specifics.resume.meta = dc->meta;
+ pi.value.download.specifics.resume.message = dc->emsg;
+ GNUNET_FS_download_make_status_ (&pi, dc);
+ dcc = dc->child_head;
+ while (NULL != dcc)
+ {
+ signal_download_resume (dcc);
+ dcc = dcc->next;
+ }
+ if (dc->pending_head != NULL)
+ GNUNET_FS_download_start_downloading_ (dc);
+}
+
+
+/**
+ * Signal resuming of a search to our clients (for the
+ * top level search and all sub-searches).
+ *
+ * @param sc search being resumed
+ */
+static void
+signal_search_resume (struct GNUNET_FS_SearchContext *sc);
+
+
+/**
+ * Iterator over search results signaling resume to the client for
+ * each result.
+ *
+ * @param cls closure, the 'struct GNUNET_FS_SearchContext'
+ * @param key current key code
+ * @param value value in the hash map, the 'struct GNUNET_FS_SearchResult'
+ * @return GNUNET_YES (we should continue to iterate)
+ */
+static int
+signal_result_resume (void *cls, const GNUNET_HashCode * key, void *value)
+{
+ struct GNUNET_FS_SearchContext *sc = cls;
+ struct GNUNET_FS_ProgressInfo pi;
+ struct GNUNET_FS_SearchResult *sr = value;
+
+ if (0 == sr->mandatory_missing)
+ {
+ pi.status = GNUNET_FS_STATUS_SEARCH_RESUME_RESULT;
+ pi.value.search.specifics.resume_result.meta = sr->meta;
+ pi.value.search.specifics.resume_result.uri = sr->uri;
+ pi.value.search.specifics.resume_result.result = sr;
+ pi.value.search.specifics.resume_result.availability_rank =
+ 2 * sr->availability_success - sr->availability_trials;
+ pi.value.search.specifics.resume_result.availability_certainty =
+ sr->availability_trials;
+ pi.value.search.specifics.resume_result.applicability_rank =
+ sr->optional_support;
+ sr->client_info = GNUNET_FS_search_make_status_ (&pi, sc);
+ }
+ if (sr->download != NULL)
+ {
+ signal_download_resume (sr->download);
+ }
+ else
+ {
+ GNUNET_FS_search_start_probe_ (sr);
+ }
+ if (sr->update_search != NULL)
+ signal_search_resume (sr->update_search);
+ return GNUNET_YES;
+}
+
+
+/**
+ * Free memory allocated by the search context and its children
+ *
+ * @param sc search context to free
+ */
+static void
+free_search_context (struct GNUNET_FS_SearchContext *sc);
+
+
+/**
+ * Iterator over search results freeing each.
+ *
+ * @param cls closure, the 'struct GNUNET_FS_SearchContext'
+ * @param key current key code
+ * @param value value in the hash map, the 'struct GNUNET_FS_SearchResult'
+ * @return GNUNET_YES (we should continue to iterate)
+ */
+static int
+free_result (void *cls, const GNUNET_HashCode * key, void *value)
+{
+ struct GNUNET_FS_SearchResult *sr = value;
+
+ if (sr->update_search != NULL)
+ {
+ free_search_context (sr->update_search);
+ GNUNET_assert (NULL == sr->update_search);
+ }
+ GNUNET_CONTAINER_meta_data_destroy (sr->meta);
+ GNUNET_FS_uri_destroy (sr->uri);
+ GNUNET_free (sr);
+ return GNUNET_YES;
+}
+
+
+/**
+ * Free memory allocated by the search context and its children
+ *
+ * @param sc search context to free
+ */
+static void
+free_search_context (struct GNUNET_FS_SearchContext *sc)
+{
+ if (sc->serialization != NULL)
+ {
+ GNUNET_FS_remove_sync_file_ (sc->h,
+ (sc->psearch_result ==
+ NULL) ? GNUNET_FS_SYNC_PATH_MASTER_SEARCH :
+ GNUNET_FS_SYNC_PATH_CHILD_SEARCH,
+ sc->serialization);
+ GNUNET_FS_remove_sync_dir_ (sc->h,
+ (sc->psearch_result ==
+ NULL) ? GNUNET_FS_SYNC_PATH_MASTER_SEARCH :
+ GNUNET_FS_SYNC_PATH_CHILD_SEARCH,
+ sc->serialization);
+ }
+ GNUNET_free_non_null (sc->serialization);
+ GNUNET_free_non_null (sc->emsg);
+ if (sc->uri != NULL)
+ GNUNET_FS_uri_destroy (sc->uri);
+ if (sc->master_result_map != NULL)
+ {
+ GNUNET_CONTAINER_multihashmap_iterate (sc->master_result_map, &free_result,
+ sc);
+ GNUNET_CONTAINER_multihashmap_destroy (sc->master_result_map);
+ }
+ GNUNET_free (sc);
+}
+
+
+/**
+ * Function called with a filename of serialized sub-download
+ * to deserialize.
+ *
+ * @param cls the 'struct GNUNET_FS_DownloadContext*' (parent)
+ * @param filename complete filename (absolute path)
+ * @return GNUNET_OK (continue to iterate)
+ */
+static int
+deserialize_subdownload (void *cls, const char *filename)
+{
+ struct GNUNET_FS_DownloadContext *parent = cls;
+ char *ser;
+ char *emsg;
+ struct GNUNET_BIO_ReadHandle *rh;
+
+ ser = get_serialization_short_name (filename);
+ rh = GNUNET_BIO_read_open (filename);
+ if (rh == NULL)
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
+ _
+ ("Failed to resume sub-download `%s': could not open file `%s'\n"),
+ ser, filename);
+ GNUNET_free (ser);
+ return GNUNET_OK;
+ }
+ deserialize_download (parent->h, rh, parent, NULL, ser);
+ if (GNUNET_OK != GNUNET_BIO_read_close (rh, &emsg))
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
+ _("Failed to resume sub-download `%s': %s\n"), ser, emsg);
+ GNUNET_free (emsg);
+ }
+ GNUNET_free (ser);
+ return GNUNET_OK;
+}
+
+
+/**
+ * Free this download context and all of its descendants.
+ * (only works during deserialization since not all possible
+ * state it taken care of).
+ *
+ * @param dc context to free
+ */
+static void
+free_download_context (struct GNUNET_FS_DownloadContext *dc)
+{
+ struct GNUNET_FS_DownloadContext *dcc;
+
+ if (dc->meta != NULL)
+ GNUNET_CONTAINER_meta_data_destroy (dc->meta);
+ if (dc->uri != NULL)
+ GNUNET_FS_uri_destroy (dc->uri);
+ GNUNET_free_non_null (dc->temp_filename);
+ GNUNET_free_non_null (dc->emsg);
+ GNUNET_free_non_null (dc->filename);
+ GNUNET_free_non_null (dc->serialization);
+ while (NULL != (dcc = dc->child_head))
+ {
+ GNUNET_CONTAINER_DLL_remove (dc->child_head, dc->child_tail, dcc);
+ free_download_context (dcc);
+ }
+ GNUNET_FS_free_download_request_ (dc->top_request);
+ if (NULL != dc->active)
+ GNUNET_CONTAINER_multihashmap_destroy (dc->active);
+ GNUNET_free (dc);
+}
+
+
+/**
+ * Deserialize a download.
+ *
+ * @param h overall context
+ * @param rh file to deserialize from
+ * @param parent parent download
+ * @param search associated search
+ * @param serialization name under which the search was serialized
+ */
+static void
+deserialize_download (struct GNUNET_FS_Handle *h,
+ struct GNUNET_BIO_ReadHandle *rh,
+ struct GNUNET_FS_DownloadContext *parent,
+ struct GNUNET_FS_SearchResult *search,
+ const char *serialization)
+{
+ struct GNUNET_FS_DownloadContext *dc;
+ char *emsg;
+ char *uris;
+ char *dn;
+ uint32_t options;
+ uint32_t status;
+
+ uris = NULL;
+ emsg = NULL;
+ dc = GNUNET_malloc (sizeof (struct GNUNET_FS_DownloadContext));
+ dc->parent = parent;
+ dc->h = h;
+ dc->serialization = GNUNET_strdup (serialization);
+ if ((GNUNET_OK !=
+ GNUNET_BIO_read_string (rh, "download-uri", &uris, 10 * 1024)) ||
+ (NULL == (dc->uri = GNUNET_FS_uri_parse (uris, &emsg))) ||
+ ((GNUNET_YES != GNUNET_FS_uri_test_chk (dc->uri)) &&
+ (GNUNET_YES != GNUNET_FS_uri_test_loc (dc->uri))) ||
+ (GNUNET_OK != GNUNET_BIO_read_meta_data (rh, "download-meta", &dc->meta))
+ || (GNUNET_OK !=
+ GNUNET_BIO_read_string (rh, "download-emsg", &dc->emsg, 10 * 1024)) ||
+ (GNUNET_OK !=
+ GNUNET_BIO_read_string (rh, "download-fn", &dc->filename, 10 * 1024)) ||
+ (GNUNET_OK !=
+ GNUNET_BIO_read_string (rh, "download-tfn", &dc->temp_filename,
+ 10 * 1024)) ||
+ (GNUNET_OK != GNUNET_BIO_read_int64 (rh, &dc->old_file_size)) ||
+ (GNUNET_OK != GNUNET_BIO_read_int64 (rh, &dc->offset)) ||
+ (GNUNET_OK != GNUNET_BIO_read_int64 (rh, &dc->length)) ||
+ (GNUNET_OK != GNUNET_BIO_read_int64 (rh, &dc->completed)) ||
+ (GNUNET_OK != read_start_time (rh, &dc->start_time)) ||
+ (GNUNET_OK != GNUNET_BIO_read_int32 (rh, &dc->anonymity)) ||
+ (GNUNET_OK != GNUNET_BIO_read_int32 (rh, &options)) ||
+ (GNUNET_OK != GNUNET_BIO_read_int32 (rh, &status)))
+ {
+ GNUNET_break (0);
+ goto cleanup;
+ }
+ dc->options = (enum GNUNET_FS_DownloadOptions) options;
+ dc->active =
+ GNUNET_CONTAINER_multihashmap_create (1 + 2 * (dc->length / DBLOCK_SIZE));
+ dc->has_finished = (int) status;
+ dc->treedepth =
+ GNUNET_FS_compute_depth (GNUNET_FS_uri_chk_get_file_size (dc->uri));
+ if (GNUNET_FS_uri_test_loc (dc->uri))
+ GNUNET_assert (GNUNET_OK ==
+ GNUNET_FS_uri_loc_get_peer_identity (dc->uri, &dc->target));
+ if (dc->emsg == NULL)
+ {
+ dc->top_request = read_download_request (rh);
+ if (dc->top_request == NULL)
+ {
+ GNUNET_break (0);
+ goto cleanup;
+ }
+ }
+ dn = get_download_sync_filename (dc, dc->serialization, ".dir");
+ if (dn != NULL)
+ {
+ if (GNUNET_YES == GNUNET_DISK_directory_test (dn))
+ GNUNET_DISK_directory_scan (dn, &deserialize_subdownload, dc);
+ GNUNET_free (dn);
+ }
+ if (parent != NULL)
+ {
+ abort (); // for debugging for now
+ GNUNET_CONTAINER_DLL_insert (parent->child_head, parent->child_tail, dc);
+ }
+ if (search != NULL)
+ {
+ dc->search = search;
+ search->download = dc;
+ }
+ if ((parent == NULL) && (search == NULL))
+ {
+ dc->top =
+ GNUNET_FS_make_top (dc->h, &GNUNET_FS_download_signal_suspend_, dc);
+ signal_download_resume (dc);
+ }
+ GNUNET_free (uris);
+ dc->task = GNUNET_SCHEDULER_add_now (&GNUNET_FS_download_start_task_, dc);
+ return;
+cleanup:
+ GNUNET_free_non_null (uris);
+ GNUNET_free_non_null (emsg);
+ free_download_context (dc);
+}
+
+
+/**
+ * Signal resuming of a search to our clients (for the
+ * top level search and all sub-searches).
+ *
+ * @param sc search being resumed
+ */
+static void
+signal_search_resume (struct GNUNET_FS_SearchContext *sc)
+{
+ struct GNUNET_FS_ProgressInfo pi;
+
+ pi.status = GNUNET_FS_STATUS_SEARCH_RESUME;
+ pi.value.search.specifics.resume.message = sc->emsg;
+ pi.value.search.specifics.resume.is_paused =
+ (sc->client == NULL) ? GNUNET_YES : GNUNET_NO;
+ sc->client_info = GNUNET_FS_search_make_status_ (&pi, sc);
+ GNUNET_CONTAINER_multihashmap_iterate (sc->master_result_map,
+ &signal_result_resume, sc);
+
+}
+
+
+/**
+ * Deserialize a search.
+ *
+ * @param h overall context
+ * @param rh file to deserialize from
+ * @param psearch_result parent search result
+ * @param serialization name under which the search was serialized
+ */
+static struct GNUNET_FS_SearchContext *
+deserialize_search (struct GNUNET_FS_Handle *h,
+ struct GNUNET_BIO_ReadHandle *rh,
+ struct GNUNET_FS_SearchResult *psearch_result,
+ const char *serialization)
+{
+ struct GNUNET_FS_SearchContext *sc;
+ char *emsg;
+ char *uris;
+ char *dn;
+ uint32_t options;
+ char in_pause;
+
+ if ((psearch_result != NULL) && (psearch_result->update_search != NULL))
+ {
+ GNUNET_break (0);
+ return NULL;
+ }
+ uris = NULL;
+ emsg = NULL;
+ sc = GNUNET_malloc (sizeof (struct GNUNET_FS_SearchContext));
+ if (psearch_result != NULL)
+ {
+ sc->psearch_result = psearch_result;
+ psearch_result->update_search = sc;
+ }
+ sc->h = h;
+ sc->serialization = GNUNET_strdup (serialization);
+ if ((GNUNET_OK != GNUNET_BIO_read_string (rh, "search-uri", &uris, 10 * 1024))
+ || (NULL == (sc->uri = GNUNET_FS_uri_parse (uris, &emsg))) ||
+ ((GNUNET_YES != GNUNET_FS_uri_test_ksk (sc->uri)) &&
+ (GNUNET_YES != GNUNET_FS_uri_test_sks (sc->uri))) ||
+ (GNUNET_OK != read_start_time (rh, &sc->start_time)) ||
+ (GNUNET_OK !=
+ GNUNET_BIO_read_string (rh, "search-emsg", &sc->emsg, 10 * 1024)) ||
+ (GNUNET_OK != GNUNET_BIO_read_int32 (rh, &options)) ||
+ (GNUNET_OK !=
+ GNUNET_BIO_read (rh, "search-pause", &in_pause, sizeof (in_pause))) ||
+ (GNUNET_OK != GNUNET_BIO_read_int32 (rh, &sc->anonymity)))
+ {
+ GNUNET_break (0);
+ goto cleanup;
+ }
+ sc->options = (enum GNUNET_FS_SearchOptions) options;
+ sc->master_result_map = GNUNET_CONTAINER_multihashmap_create (16);
+ dn = get_serialization_file_name_in_dir (h,
+ (sc->psearch_result ==
+ NULL) ?
+ GNUNET_FS_SYNC_PATH_MASTER_SEARCH :
+ GNUNET_FS_SYNC_PATH_CHILD_SEARCH,
+ sc->serialization, "");
+ if (dn != NULL)
+ {
+ if (GNUNET_YES == GNUNET_DISK_directory_test (dn))
+ GNUNET_DISK_directory_scan (dn, &deserialize_search_result, sc);
+ GNUNET_free (dn);
+ }
+ if (('\0' == in_pause) &&
+ (GNUNET_OK != GNUNET_FS_search_start_searching_ (sc)))
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
+ _
+ ("Could not resume running search, will resume as paused search\n"));
+ }
+ signal_search_resume (sc);
+ GNUNET_free (uris);
+ return sc;
+cleanup:
+ GNUNET_free_non_null (emsg);
+ free_search_context (sc);
+ GNUNET_free_non_null (uris);
+ return NULL;
+}
+
+
+/**
+ * Function called with a filename of serialized search operation
+ * to deserialize.
+ *
+ * @param cls the 'struct GNUNET_FS_Handle*'
+ * @param filename complete filename (absolute path)
+ * @return GNUNET_OK (continue to iterate)
+ */
+static int
+deserialize_search_file (void *cls, const char *filename)
+{
+ struct GNUNET_FS_Handle *h = cls;
+ char *ser;
+ char *emsg;
+ struct GNUNET_BIO_ReadHandle *rh;
+ struct GNUNET_FS_SearchContext *sc;
+
+ ser = get_serialization_short_name (filename);
+ rh = GNUNET_BIO_read_open (filename);
+ if (rh == NULL)
+ {
+ if (ser != NULL)
+ {
+ GNUNET_FS_remove_sync_file_ (h, GNUNET_FS_SYNC_PATH_MASTER_SEARCH, ser);
+ GNUNET_free (ser);
+ }
+ return GNUNET_OK;
+ }
+ sc = deserialize_search (h, rh, NULL, ser);
+ if (sc != NULL)
+ sc->top = GNUNET_FS_make_top (h, &GNUNET_FS_search_signal_suspend_, sc);
+ GNUNET_free (ser);
+ if (GNUNET_OK != GNUNET_BIO_read_close (rh, &emsg))
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
+ _("Failure while resuming search operation `%s': %s\n"),
+ filename, emsg);
+ GNUNET_free (emsg);
+ }
+ return GNUNET_OK;
+}
+
+
+/**
+ * Function called with a filename of serialized download operation
+ * to deserialize.
+ *
+ * @param cls the 'struct GNUNET_FS_Handle*'
+ * @param filename complete filename (absolute path)
+ * @return GNUNET_OK (continue to iterate)
+ */
+static int
+deserialize_download_file (void *cls, const char *filename)
+{
+ struct GNUNET_FS_Handle *h = cls;
+ char *ser;
+ char *emsg;
+ struct GNUNET_BIO_ReadHandle *rh;
+
+ ser = get_serialization_short_name (filename);
+ rh = GNUNET_BIO_read_open (filename);
+ if (rh == NULL)
+ {
+ if (0 != UNLINK (filename))
+ GNUNET_log_strerror_file (GNUNET_ERROR_TYPE_WARNING, "unlink", filename);
+ GNUNET_free (ser);
+ return GNUNET_OK;
+ }
+ deserialize_download (h, rh, NULL, NULL, ser);
+ GNUNET_free (ser);
+ if (GNUNET_OK != GNUNET_BIO_read_close (rh, &emsg))
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
+ _("Failure while resuming download operation `%s': %s\n"),
+ filename, emsg);
+ GNUNET_free (emsg);
+ }
+ return GNUNET_OK;
+}
+
+
+/**
+ * Deserialize informatin about pending operations.
+ *
+ * @param master_path which master directory should be scanned
+ * @param proc function to call for each entry (will get 'h' for 'cls')
+ * @param h the 'struct GNUNET_FS_Handle*'
+ */
+static void
+deserialization_master (const char *master_path, GNUNET_FileNameCallback proc,
+ struct GNUNET_FS_Handle *h)
+{
+ char *dn;
+
+ dn = get_serialization_file_name (h, master_path, "");
+ if (dn == NULL)
+ return;
+ if (GNUNET_YES == GNUNET_DISK_directory_test (dn))
+ GNUNET_DISK_directory_scan (dn, proc, h);
+ GNUNET_free (dn);
+}
+
projects / oweals / gnunet.git / blobdiff