-/*
- This file is part of GNUnet.
- (C) 2001, 2002, 2003, 2004, 2005, 2006, 2008, 2009, 2010, 2011 Christian Grothoff (and other contributing authors)
-
- GNUnet is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published
- by the Free Software Foundation; either version 3, or (at your
- option) any later version.
-
- GNUnet is distributed in the hope that it will be useful, but
- WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with GNUnet; see the file COPYING. If not, write to the
- Free Software Foundation, Inc., 59 Temple Place - Suite 330,
- Boston, MA 02111-1307, USA.
-*/
-
-/**
- * @file fs/fs.c
- * @brief main FS functions (master initialization, serialization, deserialization, shared code)
- * @author Christian Grothoff
- */
-
-#include "platform.h"
-#include "gnunet_util_lib.h"
-#include "gnunet_fs_service.h"
-#include "fs.h"
-#include "fs_tree.h"
-
-
-/**
- * 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)
- {
- GNUNET_abort (); // for debugging for now - FIXME
- 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);
-}
-
-
-/**
- * Setup a connection to the file-sharing service.
- *
- * @param cfg configuration to use
- * @param client_name unique identifier for this client
- * @param upcb function to call to notify about FS actions
- * @param upcb_cls closure for upcb
- * @param flags specific attributes for fs-operations
- * @param ... list of optional options, terminated with GNUNET_FS_OPTIONS_END
- * @return NULL on error
- */
-struct GNUNET_FS_Handle *
-GNUNET_FS_start (const struct GNUNET_CONFIGURATION_Handle *cfg,
- const char *client_name, GNUNET_FS_ProgressCallback upcb,
- void *upcb_cls, enum GNUNET_FS_Flags flags, ...)
-{
- struct GNUNET_FS_Handle *ret;
- enum GNUNET_FS_OPTIONS opt;
- va_list ap;
-
- ret = GNUNET_malloc (sizeof (struct GNUNET_FS_Handle));
- ret->cfg = cfg;
- ret->client_name = GNUNET_strdup (client_name);
- ret->upcb = upcb;
- ret->upcb_cls = upcb_cls;
- ret->flags = flags;
- ret->max_parallel_downloads = 1;
- ret->max_parallel_requests = 1;
- ret->avg_block_latency = GNUNET_TIME_UNIT_MINUTES; /* conservative starting point */
- va_start (ap, flags);
- while (GNUNET_FS_OPTIONS_END != (opt = va_arg (ap, enum GNUNET_FS_OPTIONS)))
- {
- switch (opt)
- {
- case GNUNET_FS_OPTIONS_DOWNLOAD_PARALLELISM:
- ret->max_parallel_downloads = va_arg (ap, unsigned int);
-
- break;
- case GNUNET_FS_OPTIONS_REQUEST_PARALLELISM:
- ret->max_parallel_requests = va_arg (ap, unsigned int);
-
- break;
- default:
- GNUNET_break (0);
- GNUNET_free (ret->client_name);
- GNUNET_free (ret);
- va_end (ap);
- return NULL;
- }
- }
- va_end (ap);
- if (0 != (GNUNET_FS_FLAGS_PERSISTENCE & flags))
- {
- deserialization_master (GNUNET_FS_SYNC_PATH_MASTER_PUBLISH,
- &deserialize_publish_file, ret);
- deserialization_master (GNUNET_FS_SYNC_PATH_MASTER_SEARCH,
- &deserialize_search_file, ret);
- deserialization_master (GNUNET_FS_SYNC_PATH_MASTER_DOWNLOAD,
- &deserialize_download_file, ret);
- deserialization_master (GNUNET_FS_SYNC_PATH_MASTER_UNINDEX,
- &deserialize_unindex_file, ret);
- }
- return ret;
-}
-
-
-/**
- * Close our connection with the file-sharing service.
- * The callback given to GNUNET_FS_start will no longer be
- * called after this function returns.
- *
- * @param h handle that was returned from GNUNET_FS_start
- */
-void
-GNUNET_FS_stop (struct GNUNET_FS_Handle *h)
-{
- while (h->top_head != NULL)
- h->top_head->ssf (h->top_head->ssf_cls);
- if (h->queue_job != GNUNET_SCHEDULER_NO_TASK)
- GNUNET_SCHEDULER_cancel (h->queue_job);
- GNUNET_free (h->client_name);
- GNUNET_free (h);
-}
-
-
-/* end of fs.c */