/*
This file is part of GNUnet.
- (C) 2001-2011 Christian Grothoff (and other contributing authors)
+ Copyright (C) 2001-2012 GNUnet e.V.
GNUnet is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published
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.
+ Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ Boston, MA 02110-1301, USA.
*/
/**
* @file fs/fs_download.c
* @brief download methods
* @author Christian Grothoff
- *
- * TODO:
- * - different priority for scheduling probe downloads?
*/
#include "platform.h"
#include "gnunet_constants.h"
#include "gnunet_fs_service.h"
-#include "fs.h"
+#include "fs_api.h"
#include "fs_tree.h"
-#define DEBUG_DOWNLOAD GNUNET_NO
/**
* Determine if the given download (options and meta data) should cause
{
return (0 != (dc->options & GNUNET_FS_DOWNLOAD_OPTION_RECURSIVE)) &&
((GNUNET_YES == GNUNET_FS_meta_data_test_for_directory (dc->meta)) ||
- ((dc->meta == NULL) &&
+ ((NULL == dc->meta) &&
((NULL == dc->filename) ||
((strlen (dc->filename) >= strlen (GNUNET_FS_DIRECTORY_EXT)) &&
(NULL !=
* Given the offset of a block (with respect to the DBLOCKS) and its
* depth, return the offset where we would store this block in the
* file.
- *
+ *
* @param fsize overall file size
* @param off offset of the block in the file
* @param depth depth of the block in the tree, 0 for DBLOCK
uint64_t loff; /* where do IBlocks for depth "i" start? */
unsigned int ioff; /* which IBlock corresponds to "off" at depth "i"? */
- if (depth == 0)
+ if (0 == depth)
return off;
/* first IBlocks start at the end of file, rounded up
* to full DBLOCK_SIZE */
{
pi->value.download.dc = dc;
pi->value.download.cctx = dc->client_info;
- pi->value.download.pctx
- = (dc->parent == NULL) ? NULL : dc->parent->client_info;
- pi->value.download.sctx
- = (dc->search == NULL) ? NULL : dc->search->client_info;
+ pi->value.download.pctx =
+ (NULL == dc->parent) ? NULL : dc->parent->client_info;
+ pi->value.download.sctx =
+ (NULL == dc->search) ? NULL : dc->search->client_info;
pi->value.download.uri = dc->uri;
pi->value.download.filename = dc->filename;
pi->value.download.size = dc->length;
- pi->value.download.duration
- = GNUNET_TIME_absolute_get_duration (dc->start_time);
+ /* FIXME: Fix duration calculation to account for pauses */
+ pi->value.download.duration =
+ GNUNET_TIME_absolute_get_duration (dc->start_time);
pi->value.download.completed = dc->completed;
pi->value.download.anonymity = dc->anonymity;
- pi->value.download.eta
- = GNUNET_TIME_calculate_eta (dc->start_time, dc->completed, dc->length);
- pi->value.download.is_active = (dc->client == NULL) ? GNUNET_NO : GNUNET_YES;
+ pi->value.download.eta =
+ GNUNET_TIME_calculate_eta (dc->start_time, dc->completed, dc->length);
+ pi->value.download.is_active = (NULL == dc->mq) ? GNUNET_NO : GNUNET_YES;
+ pi->fsh = dc->h;
if (0 == (dc->options & GNUNET_FS_DOWNLOAD_IS_PROBE))
dc->client_info = dc->h->upcb (dc->h->upcb_cls, pi);
else
}
-/**
- * We're ready to transmit a search request to the
- * file-sharing service. Do it. If there is
- * more than one request pending, try to send
- * multiple or request another transmission.
- *
- * @param cls closure
- * @param size number of bytes available in buf
- * @param buf where the callee should write the message
- * @return number of bytes written to buf
- */
-static size_t transmit_download_request (void *cls, size_t size, void *buf);
-
-
/**
* Closure for iterator processing results.
*/
/**
* Hash of data.
*/
- GNUNET_HashCode query;
+ struct GNUNET_HashCode query;
/**
* Data found in P2P network.
*/
struct GNUNET_FS_DownloadContext *dc;
+ /**
+ * When did we last transmit the request?
+ */
+ struct GNUNET_TIME_Absolute last_transmission;
+
/**
* Number of bytes in data.
*/
*/
int do_store;
+ /**
+ * how much respect did we offer to get this reply?
+ */
+ uint32_t respect_offered;
+
+ /**
+ * how often did we transmit the query?
+ */
+ uint32_t num_transmissions;
+
};
* @param cls closure (our 'struct ProcessResultClosure')
* @param key query for the given value / request
* @param value value in the hash map (a 'struct DownloadRequest')
- * @return GNUNET_YES (we should continue to iterate); unless serious error
+ * @return #GNUNET_YES (we should continue to iterate); unless serious error
*/
static int
process_result_with_request (void *cls,
- const GNUNET_HashCode * key, void *value);
+ const struct GNUNET_HashCode * key,
+ void *value);
/**
* We've found a matching block without downloading it.
* Encrypt it and pass it to our "receive" function as
* if we had received it from the network.
- *
+ *
* @param dc download in question
* @param chk request this relates to
* @param dr request details
static int
encrypt_existing_match (struct GNUNET_FS_DownloadContext *dc,
const struct ContentHashKey *chk,
- struct DownloadRequest *dr,
- const char *block, size_t len, int do_store)
+ struct DownloadRequest *dr, const char *block,
+ size_t len, int do_store)
{
struct ProcessResultClosure prc;
char enc[len];
- struct GNUNET_CRYPTO_AesSessionKey sk;
- struct GNUNET_CRYPTO_AesInitializationVector iv;
- GNUNET_HashCode query;
+ struct GNUNET_CRYPTO_SymmetricSessionKey sk;
+ struct GNUNET_CRYPTO_SymmetricInitializationVector iv;
+ struct GNUNET_HashCode query;
GNUNET_CRYPTO_hash_to_aes_key (&chk->key, &sk, &iv);
- if (-1 == GNUNET_CRYPTO_aes_encrypt (block, len, &sk, &iv, enc))
+ if (-1 == GNUNET_CRYPTO_symmetric_encrypt (block, len, &sk, &iv, enc))
{
GNUNET_break (0);
return GNUNET_SYSERR;
}
GNUNET_CRYPTO_hash (enc, len, &query);
- if (0 != memcmp (&query, &chk->query, sizeof (GNUNET_HashCode)))
+ if (0 != memcmp (&query, &chk->query, sizeof (struct GNUNET_HashCode)))
{
GNUNET_break_op (0);
return GNUNET_SYSERR;
}
-#if DEBUG_DOWNLOAD
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "Matching block for `%s' at offset %llu already present, no need for download!\n",
+ "Matching %u byte block for `%s' at offset %llu already present, no need for download!\n",
+ (unsigned int) len,
dc->filename, (unsigned long long) dr->offset);
-#endif
/* already got it! */
prc.dc = dc;
prc.data = enc;
prc.size = len;
- prc.type = (0 == dr->depth)
- ? GNUNET_BLOCK_TYPE_FS_DBLOCK : GNUNET_BLOCK_TYPE_FS_IBLOCK;
+ prc.type =
+ (0 ==
+ dr->depth) ? GNUNET_BLOCK_TYPE_FS_DBLOCK : GNUNET_BLOCK_TYPE_FS_IBLOCK;
prc.query = chk->query;
prc.do_store = do_store;
+ prc.last_transmission = GNUNET_TIME_UNIT_FOREVER_ABS;
process_result_with_request (&prc, &chk->key, dr);
return GNUNET_OK;
}
*
* @param dc download context that is having trouble
*/
-static void try_reconnect (struct GNUNET_FS_DownloadContext *dc);
+static void
+try_reconnect (struct GNUNET_FS_DownloadContext *dc);
/**
* @param data contents of the file (or NULL if they were not inlined)
*/
static void
-trigger_recursive_download (void *cls,
- const char *filename,
+trigger_recursive_download (void *cls, const char *filename,
const struct GNUNET_FS_Uri *uri,
const struct GNUNET_CONTAINER_MetaData *meta,
size_t length, const void *data);
("Recursive downloads of directories larger than 4 GB are not supported on 32-bit systems\n"));
return;
}
- if (dc->filename != NULL)
+ if (NULL != dc->filename)
{
- h = GNUNET_DISK_file_open (dc->filename,
- GNUNET_DISK_OPEN_READ, GNUNET_DISK_PERM_NONE);
+ h = GNUNET_DISK_file_open (dc->filename, GNUNET_DISK_OPEN_READ,
+ GNUNET_DISK_PERM_NONE);
}
else
{
- GNUNET_assert (dc->temp_filename != NULL);
- h = GNUNET_DISK_file_open (dc->temp_filename,
- GNUNET_DISK_OPEN_READ, GNUNET_DISK_PERM_NONE);
+ GNUNET_assert (NULL != dc->temp_filename);
+ h = GNUNET_DISK_file_open (dc->temp_filename, GNUNET_DISK_OPEN_READ,
+ GNUNET_DISK_PERM_NONE);
}
- if (h == NULL)
+ if (NULL == h)
return; /* oops */
data = GNUNET_DISK_file_map (h, &m, GNUNET_DISK_MAP_TYPE_READ, size);
- if (data == NULL)
+ if (NULL == data)
{
GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
_("Directory too large for system address space\n"));
}
else
{
- GNUNET_FS_directory_list_contents (size,
- data,
- 0, &trigger_recursive_download, dc);
+ GNUNET_FS_directory_list_contents (size, data, 0,
+ &trigger_recursive_download, dc);
GNUNET_DISK_file_unmap (m);
}
GNUNET_DISK_file_close (h);
- if (dc->filename == NULL)
+ if (NULL == dc->filename)
{
if (0 != UNLINK (dc->temp_filename))
- GNUNET_log_strerror_file (GNUNET_ERROR_TYPE_WARNING,
- "unlink", dc->temp_filename);
+ GNUNET_log_strerror_file (GNUNET_ERROR_TYPE_WARNING, "unlink",
+ dc->temp_filename);
GNUNET_free (dc->temp_filename);
dc->temp_filename = NULL;
}
struct GNUNET_FS_DownloadContext *pos;
/* first, check if we need to download children */
- if ((dc->child_head == NULL) && (is_recursive_download (dc)))
+ if ((NULL == dc->child_head) && (is_recursive_download (dc)))
full_recursive_download (dc);
/* then, check if children are done already */
- pos = dc->child_head;
- while (pos != NULL)
+ for (pos = dc->child_head; NULL != pos; pos = pos->next)
{
if ((pos->emsg == NULL) && (pos->completed < pos->length))
return; /* not done yet */
if ((pos->child_head != NULL) && (pos->has_finished != GNUNET_YES))
return; /* not transitively done yet */
- pos = pos->next;
}
/* All of our children are done, so mark this download done */
dc->has_finished = GNUNET_YES;
- if (dc->job_queue != NULL)
+ if (NULL != dc->job_queue)
{
GNUNET_FS_dequeue_ (dc->job_queue);
dc->job_queue = NULL;
}
+ if (NULL != dc->task)
+ {
+ GNUNET_SCHEDULER_cancel (dc->task);
+ dc->task = NULL;
+ }
+ if (NULL != dc->rfh)
+ {
+ GNUNET_break (GNUNET_OK == GNUNET_DISK_file_close (dc->rfh));
+ dc->rfh = NULL;
+ }
GNUNET_FS_download_sync_ (dc);
/* signal completion */
GNUNET_FS_download_make_status_ (&pi, dc);
/* let parent know */
- if (dc->parent != NULL)
+ if (NULL != dc->parent)
check_completed (dc->parent);
}
char enc[DBLOCK_SIZE];
struct ContentHashKey chks[CHK_PER_INODE];
struct ContentHashKey in_chk;
- struct GNUNET_CRYPTO_AesSessionKey sk;
- struct GNUNET_CRYPTO_AesInitializationVector iv;
+ struct GNUNET_CRYPTO_SymmetricSessionKey sk;
+ struct GNUNET_CRYPTO_SymmetricInitializationVector iv;
size_t dlen;
struct DownloadRequest *drc;
struct GNUNET_DISK_FileHandle *fh;
return;
if (dr->depth > 0)
{
+ if ( (dc->offset > 0) ||
+ (dc->length < GNUNET_ntohll (dc->uri->data.chk.file_length)) )
+ {
+ /* NOTE: this test is not tight, but should suffice; the issue
+ here is that 'dr->num_children' may inherently only specify a
+ smaller range than what is in the original file;
+ thus, reconstruction of (some) inner blocks will fail.
+ FIXME: we might eventually want to write a tighter test to
+ maximize the circumstances under which we do succeed with
+ IBlock reconstruction. (need good tests though). */
+ return;
+ }
complete = GNUNET_YES;
for (i = 0; i < dr->num_children; i++)
{
}
GNUNET_CRYPTO_hash (&data[dr->offset], dlen, &in_chk.key);
GNUNET_CRYPTO_hash_to_aes_key (&in_chk.key, &sk, &iv);
- if (-1 == GNUNET_CRYPTO_aes_encrypt (&data[dr->offset], dlen, &sk, &iv, enc))
+ if (-1 == GNUNET_CRYPTO_symmetric_encrypt (&data[dr->offset], dlen, &sk, &iv, enc))
{
GNUNET_break (0);
return;
break;
}
/* write block to disk */
- fn = dc->filename != NULL ? dc->filename : dc->temp_filename;
- fh = GNUNET_DISK_file_open (fn,
- GNUNET_DISK_OPEN_READWRITE |
- GNUNET_DISK_OPEN_CREATE |
- GNUNET_DISK_OPEN_TRUNCATE,
- GNUNET_DISK_PERM_USER_READ |
- GNUNET_DISK_PERM_USER_WRITE |
- GNUNET_DISK_PERM_GROUP_READ |
- GNUNET_DISK_PERM_OTHER_READ);
- if (fh == NULL)
+ fn = (NULL != dc->filename) ? dc->filename : dc->temp_filename;
+ if (NULL != fn)
{
- GNUNET_log_strerror_file (GNUNET_ERROR_TYPE_ERROR, "open", fn);
- GNUNET_asprintf (&dc->emsg,
- _("Failed to open file `%s' for writing"), fn);
- GNUNET_DISK_file_close (fh);
- dr->state = BRS_ERROR;
- pi.status = GNUNET_FS_STATUS_DOWNLOAD_ERROR;
- pi.value.download.specifics.error.message = dc->emsg;
- GNUNET_FS_download_make_status_ (&pi, dc);
- return;
- }
- if (data_len != GNUNET_DISK_file_write (fh, odata, odata_len))
- {
- GNUNET_log_strerror_file (GNUNET_ERROR_TYPE_ERROR, "write", fn);
- GNUNET_asprintf (&dc->emsg,
- _("Failed to open file `%s' for writing"), fn);
+ fh = GNUNET_DISK_file_open (fn,
+ GNUNET_DISK_OPEN_READWRITE |
+ GNUNET_DISK_OPEN_CREATE |
+ GNUNET_DISK_OPEN_TRUNCATE,
+ GNUNET_DISK_PERM_USER_READ |
+ GNUNET_DISK_PERM_USER_WRITE |
+ GNUNET_DISK_PERM_GROUP_READ |
+ GNUNET_DISK_PERM_OTHER_READ);
+ if (NULL == fh)
+ {
+ GNUNET_log_strerror_file (GNUNET_ERROR_TYPE_ERROR, "open", fn);
+ GNUNET_asprintf (&dc->emsg,
+ _("Failed to open file `%s' for writing"),
+ fn);
+ GNUNET_DISK_file_close (fh);
+ dr->state = BRS_ERROR;
+ pi.status = GNUNET_FS_STATUS_DOWNLOAD_ERROR;
+ pi.value.download.specifics.error.message = dc->emsg;
+ GNUNET_FS_download_make_status_ (&pi, dc);
+ return;
+ }
+ if (data_len != GNUNET_DISK_file_write (fh, odata, odata_len))
+ {
+ GNUNET_log_strerror_file (GNUNET_ERROR_TYPE_ERROR, "write", fn);
+ GNUNET_asprintf (&dc->emsg, _("Failed to open file `%s' for writing"),
+ fn);
+ GNUNET_DISK_file_close (fh);
+ dr->state = BRS_ERROR;
+ pi.status = GNUNET_FS_STATUS_DOWNLOAD_ERROR;
+ pi.value.download.specifics.error.message = dc->emsg;
+ GNUNET_FS_download_make_status_ (&pi, dc);
+ return;
+ }
GNUNET_DISK_file_close (fh);
- dr->state = BRS_ERROR;
- pi.status = GNUNET_FS_STATUS_DOWNLOAD_ERROR;
- pi.value.download.specifics.error.message = dc->emsg;
- GNUNET_FS_download_make_status_ (&pi, dc);
- return;
}
- GNUNET_DISK_file_close (fh);
/* signal success */
dr->state = BRS_DOWNLOAD_UP;
dc->completed = dc->length;
pi.value.download.specifics.progress.offset = 0;
pi.value.download.specifics.progress.data_len = dlen;
pi.value.download.specifics.progress.depth = 0;
+ pi.value.download.specifics.progress.respect_offered = 0;
+ pi.value.download.specifics.progress.block_download_duration = GNUNET_TIME_UNIT_ZERO;
GNUNET_FS_download_make_status_ (&pi, dc);
if ((NULL != dc->filename) &&
- (0 != truncate (dc->filename,
- GNUNET_ntohll (dc->uri->data.chk.file_length))))
- GNUNET_log_strerror_file (GNUNET_ERROR_TYPE_WARNING,
- "truncate", dc->filename);
+ (0 !=
+ TRUNCATE (dc->filename,
+ GNUNET_ntohll (dc->uri->data.chk.file_length))))
+ GNUNET_log_strerror_file (GNUNET_ERROR_TYPE_WARNING, "truncate",
+ dc->filename);
check_completed (dc);
break;
default:
* used in the main libextractor library and yielding
* meta data).
* @param type libextractor-type describing the meta data
- * @param format basic format information about data
+ * @param format basic format information about data
* @param data_mime_type mime-type of data (not of the original file);
* can be NULL (if mime-type is not known)
* @param data actual meta-data found
* @return 0 to continue extracting, 1 to abort
*/
static int
-match_full_data (void *cls,
- const char *plugin_name,
- enum EXTRACTOR_MetaType type,
- enum EXTRACTOR_MetaFormat format,
+match_full_data (void *cls, const char *plugin_name,
+ enum EXTRACTOR_MetaType type, enum EXTRACTOR_MetaFormat format,
const char *data_mime_type, const char *data, size_t data_len)
{
struct GNUNET_FS_DownloadContext *dc = cls;
- if (type != EXTRACTOR_METATYPE_GNUNET_FULL_DATA)
+ if (EXTRACTOR_METATYPE_GNUNET_FULL_DATA != type)
return 0;
-#if DEBUG_DOWNLOAD
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "Found %u bytes of FD!\n", (unsigned int) data_len);
-#endif
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Found %u bytes of FD!\n",
+ (unsigned int) data_len);
if (GNUNET_FS_uri_chk_get_file_size (dc->uri) != data_len)
{
GNUNET_break_op (0);
{
dr->state = BRS_DOWNLOAD_UP;
dr = dr->parent;
- if (dr == NULL)
+ if (NULL == dr)
break;
for (i = 0; i < dr->num_children; i++)
if (dr->children[i]->state != BRS_DOWNLOAD_UP)
{
uint64_t off;
char block[DBLOCK_SIZE];
- GNUNET_HashCode key;
+ struct GNUNET_HashCode key;
uint64_t total;
size_t len;
unsigned int i;
- unsigned int chk_off;
struct DownloadRequest *drc;
uint64_t child_block_size;
const struct ContentHashKey *chks;
int up_done;
- GNUNET_assert (dc->rfh != NULL);
- GNUNET_assert (dr->state == BRS_CHK_SET);
+ GNUNET_assert (NULL != dc->rfh);
+ GNUNET_assert (BRS_CHK_SET == dr->state);
total = GNUNET_FS_uri_chk_get_file_size (dc->uri);
GNUNET_assert (dr->depth < dc->treedepth);
len = GNUNET_FS_tree_calculate_block_size (total, dr->offset, dr->depth);
return; /* failure */
}
GNUNET_CRYPTO_hash (block, len, &key);
- if (0 != memcmp (&key, &dr->chk.key, sizeof (GNUNET_HashCode)))
+ if (0 != memcmp (&key, &dr->chk.key, sizeof (struct GNUNET_HashCode)))
return; /* mismatch */
if (GNUNET_OK !=
encrypt_existing_match (dc, &dr->chk, dr, block, len, GNUNET_NO))
/* hash matches but encrypted block does not, really bad */
dr->state = BRS_ERROR;
/* propagate up */
- while (dr->parent != NULL)
+ while (NULL != dr->parent)
{
dr = dr->parent;
dr->state = BRS_ERROR;
GNUNET_assert (drc->offset >= dr->offset);
child_block_size = GNUNET_FS_tree_compute_tree_size (drc->depth);
GNUNET_assert (0 == (drc->offset - dr->offset) % child_block_size);
- chk_off = (drc->offset - dr->offset) / child_block_size;
- if (drc->state == BRS_INIT)
+ if (BRS_INIT == drc->state)
{
drc->state = BRS_CHK_SET;
- drc->chk = chks[chk_off];
+ drc->chk = chks[drc->chk_idx];
try_top_down_reconstruction (dc, drc);
}
- if (drc->state != BRS_DOWNLOAD_UP)
+ if (BRS_DOWNLOAD_UP != drc->state)
up_done = GNUNET_NO; /* children not all done */
}
- if (up_done == GNUNET_YES)
+ if (GNUNET_YES == up_done)
propagate_up (dr); /* children all done (or no children...) */
}
+/**
+ * Add entries to the message queue.
+ *
+ * @param cls our download context
+ * @param key unused
+ * @param entry entry of type `struct DownloadRequest`
+ * @return #GNUNET_OK
+ */
+static int
+retry_entry (void *cls,
+ const struct GNUNET_HashCode *key,
+ void *entry)
+{
+ struct GNUNET_FS_DownloadContext *dc = cls;
+ struct DownloadRequest *dr = entry;
+ struct SearchMessage *sm;
+ struct GNUNET_MQ_Envelope *env;
+
+ env = GNUNET_MQ_msg (sm,
+ GNUNET_MESSAGE_TYPE_FS_START_SEARCH);
+ if (0 != (dc->options & GNUNET_FS_DOWNLOAD_OPTION_LOOPBACK_ONLY))
+ sm->options = htonl (GNUNET_FS_SEARCH_OPTION_LOOPBACK_ONLY);
+ else
+ sm->options = htonl (GNUNET_FS_SEARCH_OPTION_NONE);
+ if (0 == dr->depth)
+ sm->type = htonl (GNUNET_BLOCK_TYPE_FS_DBLOCK);
+ else
+ sm->type = htonl (GNUNET_BLOCK_TYPE_FS_IBLOCK);
+ sm->anonymity_level = htonl (dc->anonymity);
+ sm->target = dc->target;
+ sm->query = dr->chk.query;
+ GNUNET_MQ_send (dc->mq,
+ env);
+ return GNUNET_OK;
+}
+
+
/**
* Schedule the download of the specified block in the tree.
*
GNUNET_break (0);
return;
}
-#if DEBUG_DOWNLOAD
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
"Scheduling download at offset %llu and depth %u for `%s'\n",
(unsigned long long) dr->offset,
- dr->depth, GNUNET_h2s (&dr->chk.query));
-#endif
+ dr->depth,
+ GNUNET_h2s (&dr->chk.query));
if (GNUNET_NO !=
GNUNET_CONTAINER_multihashmap_contains_value (dc->active,
- &dr->chk.query, dr))
+ &dr->chk.query,
+ dr))
return; /* already active */
GNUNET_CONTAINER_multihashmap_put (dc->active,
&dr->chk.query,
dr,
GNUNET_CONTAINER_MULTIHASHMAPOPTION_MULTIPLE);
- if (dc->client == NULL)
+ if (NULL == dc->mq)
return; /* download not active */
- GNUNET_CONTAINER_DLL_insert (dc->pending_head, dc->pending_tail, dr);
- dr->is_pending = GNUNET_YES;
- if (NULL == dc->th)
- dc->th = GNUNET_CLIENT_notify_transmit_ready (dc->client,
- sizeof (struct SearchMessage),
- GNUNET_CONSTANTS_SERVICE_TIMEOUT,
- GNUNET_NO,
- &transmit_download_request,
- dc);
+ retry_entry (dc,
+ &dr->chk.query,
+ dr);
}
* @param data contents of the file (or NULL if they were not inlined)
*/
static void
-trigger_recursive_download (void *cls,
- const char *filename,
+trigger_recursive_download (void *cls, const char *filename,
const struct GNUNET_FS_Uri *uri,
const struct GNUNET_CONTAINER_MetaData *meta,
size_t length, const void *data)
if (NULL == uri)
return; /* entry for the directory itself */
cpos = dc->child_head;
- while (cpos != NULL)
+ while (NULL != cpos)
{
- if ((GNUNET_FS_uri_test_equal (uri,
- cpos->uri)) ||
- ((filename != NULL) && (0 == strcmp (cpos->filename, filename))))
+ if ((GNUNET_FS_uri_test_equal (uri, cpos->uri)) ||
+ ((NULL != filename) && (0 == strcmp (cpos->filename, filename))))
break;
cpos = cpos->next;
}
- if (cpos != NULL)
+ if (NULL != cpos)
return; /* already exists */
fn = NULL;
if (NULL == filename)
{
fn = GNUNET_FS_meta_data_suggest_filename (meta);
- if (fn == NULL)
+ if (NULL == fn)
{
us = GNUNET_FS_uri_to_string (uri);
fn = GNUNET_strdup (&us[strlen (GNUNET_FS_URI_CHK_PREFIX)]);
GNUNET_free (us);
}
- else if (fn[0] == '.')
+ else if ('.' == fn[0])
{
ext = fn;
us = GNUNET_FS_uri_to_string (uri);
- GNUNET_asprintf (&fn,
- "%s%s", &us[strlen (GNUNET_FS_URI_CHK_PREFIX)], ext);
+ GNUNET_asprintf (&fn, "%s%s", &us[strlen (GNUNET_FS_URI_CHK_PREFIX)],
+ ext);
GNUNET_free (ext);
GNUNET_free (us);
}
}
filename = fn;
}
- if (dc->filename == NULL)
+ if (NULL == dc->filename)
{
full_name = NULL;
}
strstr (dn + strlen (dn) - strlen (GNUNET_FS_DIRECTORY_EXT),
GNUNET_FS_DIRECTORY_EXT)));
sfn = GNUNET_strdup (filename);
- while ((strlen (sfn) > 0) && (filename[strlen (sfn) - 1] == '/'))
+ while ((strlen (sfn) > 0) && ('/' == filename[strlen (sfn) - 1]))
sfn[strlen (sfn) - 1] = '\0';
if ((strlen (dn) >= strlen (GNUNET_FS_DIRECTORY_EXT)) &&
(NULL !=
strstr (filename + strlen (filename) -
strlen (GNUNET_FS_DIRECTORY_EXT), GNUNET_FS_DIRECTORY_EXT))))
{
- GNUNET_asprintf (&full_name,
- "%s%s%s%s",
- dn, DIR_SEPARATOR_STR, sfn, GNUNET_FS_DIRECTORY_EXT);
+ GNUNET_asprintf (&full_name, "%s%s%s%s", dn, DIR_SEPARATOR_STR, sfn,
+ GNUNET_FS_DIRECTORY_EXT);
}
else
{
GNUNET_free (sfn);
GNUNET_free (dn);
}
- if ((full_name != NULL) &&
+ if ((NULL != full_name) &&
(GNUNET_OK != GNUNET_DISK_directory_create_for_file (full_name)))
{
GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
}
temp_name = NULL;
-#if DEBUG_DOWNLOAD
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
"Triggering recursive download of size %llu with %u bytes MD\n",
(unsigned long long) GNUNET_FS_uri_chk_get_file_size (uri),
(unsigned int)
GNUNET_CONTAINER_meta_data_get_serialized_size (meta));
-#endif
- GNUNET_FS_download_start (dc->h,
- uri,
- meta,
- full_name, temp_name,
- 0,
+ GNUNET_FS_download_start (dc->h, uri, meta, full_name, temp_name, 0,
GNUNET_FS_uri_chk_get_file_size (uri),
dc->anonymity, dc->options, NULL, dc);
GNUNET_free_non_null (full_name);
{
unsigned int i;
- if (dr == NULL)
+ if (NULL == dr)
return;
for (i = 0; i < dr->num_children; i++)
GNUNET_FS_free_download_request_ (dr->children[i]);
* Iterator over entries in the pending requests in the 'active' map for the
* reply that we just got.
*
- * @param cls closure (our 'struct ProcessResultClosure')
+ * @param cls closure (our `struct ProcessResultClosure`)
* @param key query for the given value / request
- * @param value value in the hash map (a 'struct DownloadRequest')
- * @return GNUNET_YES (we should continue to iterate); unless serious error
+ * @param value value in the hash map (a `struct DownloadRequest`)
+ * @return #GNUNET_YES (we should continue to iterate); unless serious error
*/
static int
process_result_with_request (void *cls,
- const GNUNET_HashCode * key, void *value)
+ const struct GNUNET_HashCode *key,
+ void *value)
{
struct ProcessResultClosure *prc = cls;
struct DownloadRequest *dr = value;
struct GNUNET_FS_DownloadContext *dc = prc->dc;
struct DownloadRequest *drc;
struct GNUNET_DISK_FileHandle *fh = NULL;
- struct GNUNET_CRYPTO_AesSessionKey skey;
- struct GNUNET_CRYPTO_AesInitializationVector iv;
+ struct GNUNET_CRYPTO_SymmetricSessionKey skey;
+ struct GNUNET_CRYPTO_SymmetricInitializationVector iv;
char pt[prc->size];
struct GNUNET_FS_ProgressInfo pi;
uint64_t off;
int i;
struct ContentHashKey *chkarr;
-#if DEBUG_DOWNLOAD
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "Received block `%s' matching pending request at depth %u and offset %llu/%llu\n",
+ "Received %u byte block `%s' matching pending request at depth %u and offset %llu/%llu\n",
+ (unsigned int) prc->size,
GNUNET_h2s (key),
dr->depth,
(unsigned long long) dr->offset,
(unsigned long long) GNUNET_ntohll (dc->uri->data.
chk.file_length));
-
-#endif
bs = GNUNET_FS_tree_calculate_block_size (GNUNET_ntohll
(dc->uri->data.chk.file_length),
dr->offset, dr->depth);
{
GNUNET_asprintf (&dc->emsg,
_
- ("Internal error or bogus download URI (expected %u bytes at depth %u and offset %llu/%llu, got %u bytes)\n"),
+ ("Internal error or bogus download URI (expected %u bytes at depth %u and offset %llu/%llu, got %u bytes)"),
bs, dr->depth, (unsigned long long) dr->offset,
(unsigned long long) GNUNET_ntohll (dc->uri->data.
chk.file_length),
prc->size);
- GNUNET_log (GNUNET_ERROR_TYPE_WARNING, "%s", dc->emsg);
- while (dr->parent != NULL)
+ GNUNET_log (GNUNET_ERROR_TYPE_WARNING, "%s\n", dc->emsg);
+ while (NULL != dr->parent)
{
dr->state = BRS_ERROR;
dr = dr->parent;
goto signal_error;
}
- (void) GNUNET_CONTAINER_multihashmap_remove (dc->active, &prc->query, dr);
- if (GNUNET_YES == dr->is_pending)
- {
- GNUNET_CONTAINER_DLL_remove (dc->pending_head, dc->pending_tail, dr);
- dr->is_pending = GNUNET_NO;
- }
-
-
- GNUNET_CRYPTO_hash_to_aes_key (&dr->chk.key, &skey, &iv);
- if (-1 == GNUNET_CRYPTO_aes_decrypt (prc->data, prc->size, &skey, &iv, pt))
+ (void) GNUNET_CONTAINER_multihashmap_remove (dc->active,
+ &prc->query,
+ dr);
+ GNUNET_CRYPTO_hash_to_aes_key (&dr->chk.key,
+ &skey,
+ &iv);
+ if (-1 == GNUNET_CRYPTO_symmetric_decrypt (prc->data,
+ prc->size,
+ &skey,
+ &iv,
+ pt))
{
GNUNET_break (0);
dc->emsg = GNUNET_strdup (_("internal error decrypting content"));
goto signal_error;
}
- off = compute_disk_offset (GNUNET_ntohll (dc->uri->data.chk.file_length),
- dr->offset, dr->depth);
+ off =
+ compute_disk_offset (GNUNET_ntohll (dc->uri->data.chk.file_length),
+ dr->offset,
+ dr->depth);
/* save to disk */
if ((GNUNET_YES == prc->do_store) &&
- ((dc->filename != NULL) ||
- (is_recursive_download (dc))) &&
+ ((NULL != dc->filename) || (is_recursive_download (dc))) &&
((dr->depth == dc->treedepth) ||
(0 == (dc->options & GNUNET_FS_DOWNLOAD_NO_TEMPORARIES))))
{
- fh = GNUNET_DISK_file_open (dc->filename != NULL
- ? dc->filename
- : dc->temp_filename,
+ fh = GNUNET_DISK_file_open (NULL != dc->filename
+ ? dc->filename : dc->temp_filename,
GNUNET_DISK_OPEN_READWRITE |
GNUNET_DISK_OPEN_CREATE,
GNUNET_DISK_PERM_USER_READ |
if (NULL == fh)
{
GNUNET_asprintf (&dc->emsg,
- _("Download failed: could not open file `%s': %s\n"),
+ _("Download failed: could not open file `%s': %s"),
dc->filename, STRERROR (errno));
goto signal_error;
}
-#if DEBUG_DOWNLOAD
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
"Saving decrypted block to disk at offset %llu\n",
(unsigned long long) off);
-#endif
- if ((off != GNUNET_DISK_file_seek (fh, off, GNUNET_DISK_SEEK_SET)))
+ if ((off != GNUNET_DISK_file_seek (fh,
+ off,
+ GNUNET_DISK_SEEK_SET)))
{
GNUNET_asprintf (&dc->emsg,
- _("Failed to seek to offset %llu in file `%s': %s\n"),
+ _("Failed to seek to offset %llu in file `%s': %s"),
(unsigned long long) off,
- dc->filename, STRERROR (errno));
+ dc->filename,
+ STRERROR (errno));
goto signal_error;
}
if (prc->size != GNUNET_DISK_file_write (fh, pt, prc->size))
{
GNUNET_asprintf (&dc->emsg,
- _
- ("Failed to write block of %u bytes at offset %llu in file `%s': %s\n"),
- (unsigned int) prc->size, (unsigned long long) off,
- dc->filename, STRERROR (errno));
+ _("Failed to write block of %u bytes at offset %llu in file `%s': %s"),
+ (unsigned int) prc->size,
+ (unsigned long long) off,
+ dc->filename,
+ STRERROR (errno));
goto signal_error;
}
GNUNET_break (GNUNET_OK == GNUNET_DISK_file_close (fh));
fh = NULL;
}
- if (dr->depth == 0)
+ if (0 == dr->depth)
{
/* DBLOCK, update progress and try recursion if applicable */
app = prc->size;
dc->completed += app;
/* do recursive download if option is set and either meta data
- * says it is a directory or if no meta data is given AND filename
+ * says it is a directory or if no meta data is given AND filename
* ends in '.gnd' (top-level case) */
if (is_recursive_download (dc))
- GNUNET_FS_directory_list_contents (prc->size,
- pt,
- off, &trigger_recursive_download, dc);
-
+ GNUNET_FS_directory_list_contents (prc->size, pt, off,
+ &trigger_recursive_download, dc);
}
+ GNUNET_assert (dc->completed <= dc->length);
dr->state = BRS_DOWNLOAD_DOWN;
pi.status = GNUNET_FS_STATUS_DOWNLOAD_PROGRESS;
pi.value.download.specifics.progress.data = pt;
pi.value.download.specifics.progress.offset = dr->offset;
pi.value.download.specifics.progress.data_len = prc->size;
pi.value.download.specifics.progress.depth = dr->depth;
+ pi.value.download.specifics.progress.respect_offered = prc->respect_offered;
+ pi.value.download.specifics.progress.num_transmissions = prc->num_transmissions;
+ if (prc->last_transmission.abs_value_us != GNUNET_TIME_UNIT_FOREVER_ABS.abs_value_us)
+ pi.value.download.specifics.progress.block_download_duration
+ = GNUNET_TIME_absolute_get_duration (prc->last_transmission);
+ else
+ pi.value.download.specifics.progress.block_download_duration
+ = GNUNET_TIME_UNIT_ZERO; /* found locally */
GNUNET_FS_download_make_status_ (&pi, dc);
- GNUNET_assert (dc->completed <= dc->length);
- if (dr->depth == 0)
+ if (0 == dr->depth)
propagate_up (dr);
if (dc->completed == dc->length)
{
/* download completed, signal */
-#if DEBUG_DOWNLOAD
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
"Download completed, truncating file to desired length %llu\n",
(unsigned long long) GNUNET_ntohll (dc->uri->data.
chk.file_length));
-#endif
/* truncate file to size (since we store IBlocks at the end) */
- if (dc->filename != NULL)
+ if (NULL != dc->filename)
{
- if (0 != truncate (dc->filename,
- GNUNET_ntohll (dc->uri->data.chk.file_length)))
- GNUNET_log_strerror_file (GNUNET_ERROR_TYPE_WARNING,
- "truncate", dc->filename);
+ if (0 !=
+ TRUNCATE (dc->filename,
+ GNUNET_ntohll (dc->uri->data.chk.file_length)))
+ GNUNET_log_strerror_file (GNUNET_ERROR_TYPE_WARNING, "truncate",
+ dc->filename);
}
- GNUNET_assert (dr->depth == 0);
+ GNUNET_assert (0 == dr->depth);
check_completed (dc);
}
- if (dr->depth == 0)
+ if (0 == dr->depth)
{
/* bottom of the tree, no child downloads possible, just sync */
GNUNET_FS_download_sync_ (dc);
return GNUNET_YES;
}
-#if DEBUG_DOWNLOAD
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
"Triggering downloads of children (this block was at depth %u and offset %llu)\n",
dr->depth, (unsigned long long) dr->offset);
-#endif
GNUNET_assert (0 == (prc->size % sizeof (struct ContentHashKey)));
chkarr = (struct ContentHashKey *) pt;
- for (i = (prc->size / sizeof (struct ContentHashKey)) - 1; i >= 0; i--)
+ for (i = dr->num_children - 1; i >= 0; i--)
{
drc = dr->children[i];
switch (drc->state)
{
case BRS_INIT:
- drc->chk = chkarr[i];
+ if ((drc->chk_idx + 1) * sizeof (struct ContentHashKey) > prc->size)
+ {
+ /* 'chkarr' does not have enough space for this chk_idx;
+ internal error! */
+ GNUNET_break (0); GNUNET_assert (0);
+ dc->emsg = GNUNET_strdup (_("internal error decoding tree"));
+ goto signal_error;
+ }
+ drc->chk = chkarr[drc->chk_idx];
drc->state = BRS_CHK_SET;
- schedule_block_download (dc, drc);
+ if (GNUNET_YES == dc->issue_requests)
+ schedule_block_download (dc, drc);
break;
case BRS_RECONSTRUCT_DOWN:
GNUNET_assert (0);
return GNUNET_YES;
signal_error:
- if (fh != NULL)
+ if (NULL != fh)
GNUNET_DISK_file_close (fh);
pi.status = GNUNET_FS_STATUS_DOWNLOAD_ERROR;
pi.value.download.specifics.error.message = dc->emsg;
GNUNET_FS_download_make_status_ (&pi, dc);
- /* abort all pending requests */
- if (NULL != dc->th)
- {
- GNUNET_CLIENT_notify_transmit_ready_cancel (dc->th);
- dc->th = NULL;
- }
- GNUNET_CLIENT_disconnect (dc->client, GNUNET_NO);
- dc->in_receive = GNUNET_NO;
- dc->client = NULL;
+ GNUNET_MQ_destroy (dc->mq);
+ dc->mq = NULL;
GNUNET_FS_free_download_request_ (dc->top_request);
dc->top_request = NULL;
GNUNET_CONTAINER_multihashmap_destroy (dc->active);
dc->active = NULL;
- dc->pending_head = NULL;
- dc->pending_tail = NULL;
+ if (NULL != dc->job_queue)
+ {
+ GNUNET_FS_dequeue_ (dc->job_queue);
+ dc->job_queue = NULL;
+ }
GNUNET_FS_download_sync_ (dc);
return GNUNET_NO;
}
/**
- * Process a download result.
+ * Type of a function to call when we check the PUT message
+ * from the service.
*
- * @param dc our download context
- * @param type type of the result
- * @param data the (encrypted) response
- * @param size size of data
+ * @param cls closure
+ * @param msg message received
*/
-static void
-process_result (struct GNUNET_FS_DownloadContext *dc,
- enum GNUNET_BLOCK_Type type, const void *data, size_t size)
+static int
+check_put (void *cls,
+ const struct ClientPutMessage *cm)
{
- struct ProcessResultClosure prc;
-
- prc.dc = dc;
- prc.data = data;
- prc.size = size;
- prc.type = type;
- prc.do_store = GNUNET_YES;
- GNUNET_CRYPTO_hash (data, size, &prc.query);
-#if DEBUG_DOWNLOAD
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "Received result for query `%s' from `%s'-service\n",
- GNUNET_h2s (&prc.query), "FS");
-#endif
- GNUNET_CONTAINER_multihashmap_get_multiple (dc->active,
- &prc.query,
- &process_result_with_request,
- &prc);
+ /* any varsize length is OK */
+ return GNUNET_OK;
}
* from the service.
*
* @param cls closure
- * @param msg message received, NULL on timeout or fatal error
+ * @param msg message received
*/
static void
-receive_results (void *cls, const struct GNUNET_MessageHeader *msg)
+handle_put (void *cls,
+ const struct ClientPutMessage *cm)
{
struct GNUNET_FS_DownloadContext *dc = cls;
- const struct PutMessage *cm;
- uint16_t msize;
+ uint16_t msize = ntohs (cm->header.size) - sizeof (*cm);
+ struct ProcessResultClosure prc;
- if ((NULL == msg) ||
- (ntohs (msg->type) != GNUNET_MESSAGE_TYPE_FS_PUT) ||
- (sizeof (struct PutMessage) > ntohs (msg->size)))
- {
- GNUNET_break (msg == NULL);
- try_reconnect (dc);
- return;
- }
- msize = ntohs (msg->size);
- cm = (const struct PutMessage *) msg;
- process_result (dc,
- ntohl (cm->type), &cm[1], msize - sizeof (struct PutMessage));
- if (dc->client == NULL)
- return; /* fatal error */
- /* continue receiving */
- GNUNET_CLIENT_receive (dc->client,
- &receive_results, dc, GNUNET_TIME_UNIT_FOREVER_REL);
+ prc.dc = dc;
+ prc.data = &cm[1];
+ prc.last_transmission = GNUNET_TIME_absolute_ntoh (cm->last_transmission);
+ prc.size = msize;
+ prc.type = ntohl (cm->type);
+ prc.do_store = GNUNET_YES;
+ prc.respect_offered = ntohl (cm->respect_offered);
+ prc.num_transmissions = ntohl (cm->num_transmissions);
+ GNUNET_CRYPTO_hash (prc.data,
+ msize,
+ &prc.query);
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Received result for query `%s' from FS service\n",
+ GNUNET_h2s (&prc.query));
+ GNUNET_CONTAINER_multihashmap_get_multiple (dc->active,
+ &prc.query,
+ &process_result_with_request,
+ &prc);
}
-
/**
- * We're ready to transmit a search request to the
- * file-sharing service. Do it. If there is
- * more than one request pending, try to send
- * multiple or request another transmission.
+ * Generic error handler, called with the appropriate error code and
+ * the same closure specified at the creation of the message queue.
+ * Not every message queue implementation supports an error handler.
*
- * @param cls closure
- * @param size number of bytes available in buf
- * @param buf where the callee should write the message
- * @return number of bytes written to buf
+ * @param cls closure with the `struct GNUNET_FS_DownloadContext *`
+ * @param error error code
*/
-static size_t
-transmit_download_request (void *cls, size_t size, void *buf)
+static void
+download_mq_error_handler (void *cls,
+ enum GNUNET_MQ_Error error)
{
struct GNUNET_FS_DownloadContext *dc = cls;
- size_t msize;
- struct SearchMessage *sm;
- struct DownloadRequest *dr;
- dc->th = NULL;
- if (NULL == buf)
+ if (NULL != dc->mq)
{
-#if DEBUG_DOWNLOAD
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "Transmitting download request failed, trying to reconnect\n");
-#endif
- try_reconnect (dc);
- return 0;
+ GNUNET_MQ_destroy (dc->mq);
+ dc->mq = NULL;
}
- GNUNET_assert (size >= sizeof (struct SearchMessage));
- msize = 0;
- sm = buf;
- while ((NULL != (dr = dc->pending_head)) &&
- (size >= msize + sizeof (struct SearchMessage)))
- {
-#if DEBUG_DOWNLOAD
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "Transmitting download request for `%s' to `%s'-service\n",
- GNUNET_h2s (&dr->chk.query), "FS");
-#endif
- memset (sm, 0, sizeof (struct SearchMessage));
- sm->header.size = htons (sizeof (struct SearchMessage));
- sm->header.type = htons (GNUNET_MESSAGE_TYPE_FS_START_SEARCH);
- if (0 != (dc->options & GNUNET_FS_DOWNLOAD_OPTION_LOOPBACK_ONLY))
- sm->options = htonl (1);
- else
- sm->options = htonl (0);
- if (dr->depth == 0)
- sm->type = htonl (GNUNET_BLOCK_TYPE_FS_DBLOCK);
- else
- sm->type = htonl (GNUNET_BLOCK_TYPE_FS_IBLOCK);
- sm->anonymity_level = htonl (dc->anonymity);
- sm->target = dc->target.hashPubKey;
- sm->query = dr->chk.query;
- GNUNET_CONTAINER_DLL_remove (dc->pending_head, dc->pending_tail, dr);
- dr->is_pending = GNUNET_NO;
- msize += sizeof (struct SearchMessage);
- sm++;
- }
- if (dc->pending_head != NULL)
- {
- dc->th = GNUNET_CLIENT_notify_transmit_ready (dc->client,
- sizeof (struct SearchMessage),
- GNUNET_CONSTANTS_SERVICE_TIMEOUT,
- GNUNET_NO,
- &transmit_download_request,
- dc);
- GNUNET_assert (dc->th != NULL);
- }
- if (GNUNET_NO == dc->in_receive)
- {
- dc->in_receive = GNUNET_YES;
- GNUNET_CLIENT_receive (dc->client,
- &receive_results, dc, GNUNET_TIME_UNIT_FOREVER_REL);
- }
- return msize;
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Transmitting download request failed, trying to reconnect\n");
+ try_reconnect (dc);
}
* Reconnect to the FS service and transmit our queries NOW.
*
* @param cls our download context
- * @param tc unused
*/
static void
-do_reconnect (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
+do_reconnect (void *cls)
{
struct GNUNET_FS_DownloadContext *dc = cls;
- struct GNUNET_CLIENT_Connection *client;
-
- dc->task = GNUNET_SCHEDULER_NO_TASK;
- client = GNUNET_CLIENT_connect ("fs", dc->h->cfg);
- if (NULL == client)
+ struct GNUNET_MQ_MessageHandler handlers[] = {
+ GNUNET_MQ_hd_var_size (put,
+ GNUNET_MESSAGE_TYPE_FS_PUT,
+ struct ClientPutMessage,
+ dc),
+ GNUNET_MQ_handler_end ()
+ };
+
+ dc->task = NULL;
+ dc->mq = GNUNET_CLIENT_connect (dc->h->cfg,
+ "fs",
+ handlers,
+ &download_mq_error_handler,
+ dc);
+ if (NULL == dc->mq)
{
GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
"Connecting to `%s'-service failed, will try again.\n", "FS");
try_reconnect (dc);
return;
}
- dc->client = client;
- if (dc->pending_head != NULL)
- {
- dc->th = GNUNET_CLIENT_notify_transmit_ready (client,
- sizeof (struct SearchMessage),
- GNUNET_CONSTANTS_SERVICE_TIMEOUT,
- GNUNET_NO,
- &transmit_download_request,
- dc);
- GNUNET_assert (dc->th != NULL);
- }
-}
-
-
-/**
- * Add entries to the pending list.
- *
- * @param cls our download context
- * @param key unused
- * @param entry entry of type "struct DownloadRequest"
- * @return GNUNET_OK
- */
-static int
-retry_entry (void *cls, const GNUNET_HashCode * key, void *entry)
-{
- struct GNUNET_FS_DownloadContext *dc = cls;
- struct DownloadRequest *dr = entry;
-
- dr->next = NULL;
- dr->prev = NULL;
- GNUNET_CONTAINER_DLL_insert (dc->pending_head, dc->pending_tail, dr);
- dr->is_pending = GNUNET_YES;
- return GNUNET_OK;
+ GNUNET_CONTAINER_multihashmap_iterate (dc->active,
+ &retry_entry,
+ dc);
}
static void
try_reconnect (struct GNUNET_FS_DownloadContext *dc)
{
-
- if (NULL != dc->client)
+ if (NULL != dc->mq)
{
-#if DEBUG_DOWNLOAD
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
"Moving all requests back to pending list\n");
-#endif
- if (NULL != dc->th)
- {
- GNUNET_CLIENT_notify_transmit_ready_cancel (dc->th);
- dc->th = NULL;
- }
- /* full reset of the pending list */
- dc->pending_head = NULL;
- dc->pending_tail = NULL;
- GNUNET_CONTAINER_multihashmap_iterate (dc->active, &retry_entry, dc);
- GNUNET_CLIENT_disconnect (dc->client, GNUNET_NO);
- dc->in_receive = GNUNET_NO;
- dc->client = NULL;
- }
-#if DEBUG_DOWNLOAD
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Will try to reconnect in 1s\n");
-#endif
- dc->task
- = GNUNET_SCHEDULER_add_delayed (GNUNET_TIME_UNIT_SECONDS,
- &do_reconnect, dc);
+ GNUNET_MQ_destroy (dc->mq);
+ dc->mq = NULL;
+ }
+ if (0 == dc->reconnect_backoff.rel_value_us)
+ dc->reconnect_backoff = GNUNET_TIME_UNIT_MILLISECONDS;
+ else
+ dc->reconnect_backoff = GNUNET_TIME_STD_BACKOFF (dc->reconnect_backoff);
+
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Will try to reconnect in %s\n",
+ GNUNET_STRINGS_relative_time_to_string (dc->reconnect_backoff,
+ GNUNET_YES));
+ GNUNET_break (NULL != dc->job_queue);
+ dc->task =
+ GNUNET_SCHEDULER_add_delayed (dc->reconnect_backoff,
+ &do_reconnect,
+ dc);
}
* We're allowed to ask the FS service for our blocks. Start the download.
*
* @param cls the 'struct GNUNET_FS_DownloadContext'
- * @param client handle to use for communcation with FS (we must destroy it!)
+ * @param mq handle to use for communcation with FS (we must destroy it!)
*/
static void
-activate_fs_download (void *cls, struct GNUNET_CLIENT_Connection *client)
+activate_fs_download (void *cls)
{
struct GNUNET_FS_DownloadContext *dc = cls;
struct GNUNET_FS_ProgressInfo pi;
-#if DEBUG_DOWNLOAD
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Download activated\n");
-#endif
- GNUNET_assert (NULL != client);
- GNUNET_assert (dc->client == NULL);
- GNUNET_assert (dc->th == NULL);
- dc->client = client;
+ GNUNET_assert (NULL == dc->mq);
+ GNUNET_assert (NULL != dc->active);
+ do_reconnect (dc);
+ if (NULL != dc->mq)
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Download activated\n");
pi.status = GNUNET_FS_STATUS_DOWNLOAD_ACTIVE;
- GNUNET_FS_download_make_status_ (&pi, dc);
- dc->pending_head = NULL;
- dc->pending_tail = NULL;
- GNUNET_CONTAINER_multihashmap_iterate (dc->active, &retry_entry, dc);
-#if DEBUG_DOWNLOAD
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "Asking for transmission to FS service\n");
-#endif
- if (dc->pending_head != NULL)
- {
- dc->th = GNUNET_CLIENT_notify_transmit_ready (dc->client,
- sizeof (struct SearchMessage),
- GNUNET_CONSTANTS_SERVICE_TIMEOUT,
- GNUNET_NO,
- &transmit_download_request,
- dc);
- GNUNET_assert (dc->th != NULL);
- }
+ GNUNET_FS_download_make_status_ (&pi,
+ dc);
}
/**
* We must stop to ask the FS service for our blocks. Pause the download.
*
- * @param cls the 'struct GNUNET_FS_DownloadContext'
+ * @param cls the `struct GNUNET_FS_DownloadContext`
*/
static void
deactivate_fs_download (void *cls)
struct GNUNET_FS_DownloadContext *dc = cls;
struct GNUNET_FS_ProgressInfo pi;
-#if DEBUG_DOWNLOAD
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Download deactivated\n");
-#endif
- if (NULL != dc->th)
- {
- GNUNET_CLIENT_notify_transmit_ready_cancel (dc->th);
- dc->th = NULL;
- }
- if (NULL != dc->client)
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Download deactivated\n");
+ if (NULL != dc->mq)
{
- GNUNET_CLIENT_disconnect (dc->client, GNUNET_NO);
- dc->in_receive = GNUNET_NO;
- dc->client = NULL;
+ GNUNET_MQ_destroy (dc->mq);
+ dc->mq = NULL;
}
- dc->pending_head = NULL;
- dc->pending_tail = NULL;
pi.status = GNUNET_FS_STATUS_DOWNLOAD_INACTIVE;
- GNUNET_FS_download_make_status_ (&pi, dc);
+ GNUNET_FS_download_make_status_ (&pi,
+ dc);
}
* (recursively) Create a download request structure.
*
* @param parent parent of the current entry
+ * @param chk_idx index of the chk for this block in the parent block
* @param depth depth of the current entry, 0 are the DBLOCKs,
* top level block is 'dc->treedepth - 1'
* @param dr_offset offset in the original file this block maps to
- * (as in, offset of the first byte of the first DBLOCK
+ * (as in, offset of the first byte of the first DBLOCK
* in the subtree rooted in the returned download request tree)
* @param file_start_offset desired starting offset for the download
* in the original file; requesting tree should not contain
*/
static struct DownloadRequest *
create_download_request (struct DownloadRequest *parent,
- unsigned int depth,
+ unsigned int chk_idx,
+ unsigned int depth,
uint64_t dr_offset,
- uint64_t file_start_offset, uint64_t desired_length)
+ uint64_t file_start_offset,
+ uint64_t desired_length)
{
struct DownloadRequest *dr;
unsigned int i;
unsigned int head_skip;
uint64_t child_block_size;
- dr = GNUNET_malloc (sizeof (struct DownloadRequest));
+ dr = GNUNET_new (struct DownloadRequest);
dr->parent = parent;
dr->depth = depth;
dr->offset = dr_offset;
- if (depth > 0)
- {
- child_block_size = GNUNET_FS_tree_compute_tree_size (depth - 1);
+ dr->chk_idx = chk_idx;
+ if (0 == depth)
+ return dr;
+ child_block_size = GNUNET_FS_tree_compute_tree_size (depth - 1);
- /* calculate how many blocks at this level are not interesting
- * from the start (rounded down), either because of the requested
- * file offset or because this IBlock is further along */
- if (dr_offset < file_start_offset)
- head_skip = file_start_offset / child_block_size;
- else
- head_skip = dr_offset / child_block_size;
+ /* calculate how many blocks at this level are not interesting
+ * from the start (rounded down), either because of the requested
+ * file offset or because this IBlock is further along */
+ if (dr_offset < file_start_offset)
+ {
+ head_skip = (file_start_offset - dr_offset) / child_block_size;
+ }
+ else
+ {
+ head_skip = 0;
+ }
- /* calculate index of last block at this level that is interesting (rounded up) */
- dr->num_children = file_start_offset + desired_length / child_block_size;
- if (dr->num_children * child_block_size <
- file_start_offset + desired_length)
- dr->num_children++; /* round up */
+ /* calculate index of last block at this level that is interesting (rounded up) */
+ dr->num_children = (file_start_offset + desired_length - dr_offset) / child_block_size;
+ if (dr->num_children * child_block_size <
+ file_start_offset + desired_length - dr_offset)
+ dr->num_children++; /* round up */
+ GNUNET_assert (dr->num_children > head_skip);
+ dr->num_children -= head_skip;
+ if (dr->num_children > CHK_PER_INODE)
+ dr->num_children = CHK_PER_INODE; /* cap at max */
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Block at offset %llu and depth %u has %u children\n",
+ (unsigned long long) dr_offset,
+ depth,
+ dr->num_children);
- /* now we can get the total number of children for this block */
- dr->num_children -= head_skip;
- if (dr->num_children > CHK_PER_INODE)
- dr->num_children = CHK_PER_INODE; /* cap at max */
+ /* now we can get the total number of *interesting* children for this block */
- /* why else would we have gotten here to begin with? (that'd be a bad logic error) */
- GNUNET_assert (dr->num_children > 0);
+ /* why else would we have gotten here to begin with? (that'd be a bad logic error) */
+ GNUNET_assert (dr->num_children > 0);
- dr->children = GNUNET_malloc (dr->num_children *
- sizeof (struct DownloadRequest *));
- for (i = 0; i < dr->num_children; i++)
- dr->children[i] = create_download_request (dr,
- depth - 1,
- dr_offset +
- i * child_block_size,
- file_start_offset,
- desired_length);
+ dr->children =
+ GNUNET_malloc (dr->num_children * sizeof (struct DownloadRequest *));
+ for (i = 0; i < dr->num_children; i++)
+ {
+ dr->children[i] =
+ create_download_request (dr, i + head_skip, depth - 1,
+ dr_offset + (i + head_skip) * child_block_size,
+ file_start_offset, desired_length);
}
return dr;
}
* the current IBlock from the existing file.
*
* @param cls the 'struct ReconstructContext'
- * @param tc scheduler context
*/
static void
-reconstruct_cont (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
+reconstruct_cont (void *cls)
{
struct GNUNET_FS_DownloadContext *dc = cls;
/* clean up state from tree encoder */
- if (dc->te != NULL)
- {
- GNUNET_FS_tree_encoder_finish (dc->te, NULL, NULL);
- dc->te = NULL;
- }
- if (dc->task != GNUNET_SCHEDULER_NO_TASK)
+ if (NULL != dc->task)
{
GNUNET_SCHEDULER_cancel (dc->task);
- dc->task = GNUNET_SCHEDULER_NO_TASK;
+ dc->task = NULL;
}
- if (dc->rfh != NULL)
+ if (NULL != dc->rfh)
{
GNUNET_break (GNUNET_OK == GNUNET_DISK_file_close (dc->rfh));
dc->rfh = NULL;
}
/* start "normal" download */
+ dc->issue_requests = GNUNET_YES;
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Starting normal download\n");
schedule_block_download (dc, dc->top_request);
}
* Task requesting the next block from the tree encoder.
*
* @param cls the 'struct GNUJNET_FS_DownloadContext' we're processing
- * @param tc task context
*/
static void
-get_next_block (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
+get_next_block (void *cls)
{
struct GNUNET_FS_DownloadContext *dc = cls;
- dc->task = GNUNET_SCHEDULER_NO_TASK;
+ dc->task = NULL;
GNUNET_FS_tree_encoder_next (dc->te);
}
-
/**
* Function called asking for the current (encoded)
* block to be processed. After processing the
*
* This function checks if the content on disk matches
* the expected content based on the URI.
- *
+ *
* @param cls closure
* @param chk content hash key for the block
* @param offset offset of the block
uint64_t offset,
unsigned int depth,
enum GNUNET_BLOCK_Type type,
- const void *block, uint16_t block_size)
+ const void *block,
+ uint16_t block_size)
{
struct GNUNET_FS_DownloadContext *dc = cls;
struct GNUNET_FS_ProgressInfo pi;
dr = dc->top_request;
while (dr->depth > depth)
{
- blen = GNUNET_FS_tree_compute_tree_size (dr->depth);
+ GNUNET_assert (dr->num_children > 0);
+ blen = GNUNET_FS_tree_compute_tree_size (dr->depth - 1);
chld = (offset - dr->offset) / blen;
- GNUNET_assert (chld < dr->num_children);
- dr = dr->children[chld];
+ if (chld < dr->children[0]->chk_idx)
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Block %u < %u irrelevant for our range\n",
+ chld,
+ dr->children[0]->chk_idx);
+ dc->task = GNUNET_SCHEDULER_add_now (&get_next_block,
+ dc);
+ return; /* irrelevant block */
+ }
+ if (chld > dr->children[dr->num_children-1]->chk_idx)
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Block %u > %u irrelevant for our range\n",
+ chld,
+ dr->children[dr->num_children-1]->chk_idx);
+ dc->task = GNUNET_SCHEDULER_add_now (&get_next_block, dc);
+ return; /* irrelevant block */
+ }
+ dr = dr->children[chld - dr->children[0]->chk_idx];
}
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Matched TE block with request at offset %llu and depth %u in state %d\n",
+ (unsigned long long) dr->offset,
+ dr->depth,
+ dr->state);
+ /* FIXME: this code needs more testing and might
+ need to handle more states... */
switch (dr->state)
{
case BRS_INIT:
case BRS_CHK_SET:
if (0 == memcmp (chk, &dr->chk, sizeof (struct ContentHashKey)))
{
- /* block matches, hence tree below matches;
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Reconstruction succeeded, can use block at offset %llu, depth %u\n",
+ (unsigned long long) offset,
+ depth);
+ /* block matches, hence tree below matches;
* this request is done! */
dr->state = BRS_DOWNLOAD_UP;
+ (void) GNUNET_CONTAINER_multihashmap_remove (dc->active,
+ &dr->chk.query,
+ dr);
/* calculate how many bytes of payload this block
* corresponds to */
blen = GNUNET_FS_tree_compute_tree_size (dr->depth);
pi.value.download.specifics.progress.offset = offset;
pi.value.download.specifics.progress.data_len = 0;
pi.value.download.specifics.progress.depth = 0;
+ pi.value.download.specifics.progress.respect_offered = 0;
+ pi.value.download.specifics.progress.block_download_duration = GNUNET_TIME_UNIT_ZERO;
GNUNET_FS_download_make_status_ (&pi, dc);
+ /* FIXME: duplicated code from 'process_result_with_request - refactor */
+ if (dc->completed == dc->length)
+ {
+ /* download completed, signal */
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Download completed, truncating file to desired length %llu\n",
+ (unsigned long long) GNUNET_ntohll (dc->uri->data.
+ chk.file_length));
+ /* truncate file to size (since we store IBlocks at the end) */
+ if (NULL != dc->filename)
+ {
+ if (0 !=
+ TRUNCATE (dc->filename,
+ GNUNET_ntohll (dc->uri->data.chk.file_length)))
+ GNUNET_log_strerror_file (GNUNET_ERROR_TYPE_WARNING, "truncate",
+ dc->filename);
+ }
+ }
}
else
- {
- }
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Reconstruction failed, need to download block at offset %llu, depth %u\n",
+ (unsigned long long) offset,
+ depth);
break;
case BRS_DOWNLOAD_DOWN:
break;
GNUNET_assert (0);
break;
}
- if ((dr == dc->top_request) && (dr->state == BRS_DOWNLOAD_UP))
- {
+ dc->task = GNUNET_SCHEDULER_add_now (&get_next_block,
+ dc);
+ if ( (dr == dc->top_request) &&
+ (dr->state == BRS_DOWNLOAD_UP) )
check_completed (dc);
- return;
- }
- dc->task = GNUNET_SCHEDULER_add_now (&get_next_block, dc);
}
struct GNUNET_DISK_FileHandle *fh = dc->rfh;
ssize_t ret;
- *emsg = NULL;
+ if (NULL != emsg)
+ *emsg = NULL;
if (offset != GNUNET_DISK_file_seek (fh, offset, GNUNET_DISK_SEEK_SET))
{
- *emsg = GNUNET_strdup (strerror (errno));
+ if (NULL != emsg)
+ *emsg = GNUNET_strdup (strerror (errno));
return 0;
}
ret = GNUNET_DISK_file_read (fh, buf, max);
if (ret < 0)
{
- *emsg = GNUNET_strdup (strerror (errno));
+ if (NULL != emsg)
+ *emsg = GNUNET_strdup (strerror (errno));
return 0;
}
return ret;
* request for the file.
*
* @param cls the 'struct GNUNET_FS_DownloadContext'
- * @param tc scheduler context
*/
void
-GNUNET_FS_download_start_task_ (void *cls,
- const struct GNUNET_SCHEDULER_TaskContext *tc)
+GNUNET_FS_download_start_task_ (void *cls)
{
struct GNUNET_FS_DownloadContext *dc = cls;
struct GNUNET_FS_ProgressInfo pi;
struct GNUNET_DISK_FileHandle *fh;
-#if DEBUG_DOWNLOAD
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Start task running...\n");
-#endif
- dc->task = GNUNET_SCHEDULER_NO_TASK;
- if (dc->length == 0)
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Start task running...\n");
+ dc->task = NULL;
+ if (0 == dc->length)
{
/* no bytes required! */
- if (dc->filename != NULL)
+ if (NULL != dc->filename)
{
fh = GNUNET_DISK_file_open (dc->filename,
GNUNET_DISK_OPEN_READWRITE |
GNUNET_DISK_file_close (fh);
}
GNUNET_FS_download_sync_ (dc);
+ pi.status = GNUNET_FS_STATUS_DOWNLOAD_START;
+ pi.value.download.specifics.start.meta = dc->meta;
+ GNUNET_FS_download_make_status_ (&pi, dc);
check_completed (dc);
return;
}
- if (dc->emsg != NULL)
+ if (NULL != dc->emsg)
return;
- if (dc->top_request == NULL)
+ if (NULL == dc->top_request)
{
- dc->top_request = create_download_request (NULL, dc->treedepth - 1, 0,
- dc->offset, dc->length);
+ dc->top_request =
+ create_download_request (NULL, 0, dc->treedepth - 1, 0, dc->offset,
+ dc->length);
dc->top_request->state = BRS_CHK_SET;
- dc->top_request->chk = (dc->uri->type == chk)
- ? dc->uri->data.chk.chk : dc->uri->data.loc.fi.chk;
+ dc->top_request->chk =
+ (dc->uri->type ==
+ GNUNET_FS_URI_CHK) ? dc->uri->data.chk.chk : dc->uri->data.loc.fi.chk;
/* signal start */
GNUNET_FS_download_sync_ (dc);
+ if (NULL != dc->search)
+ GNUNET_FS_search_result_sync_ (dc->search);
pi.status = GNUNET_FS_STATUS_DOWNLOAD_START;
pi.value.download.specifics.start.meta = dc->meta;
GNUNET_FS_download_make_status_ (&pi, dc);
GNUNET_FS_download_start_downloading_ (dc);
/* attempt reconstruction from disk */
if (GNUNET_YES == GNUNET_DISK_file_test (dc->filename))
- dc->rfh = GNUNET_DISK_file_open (dc->filename,
- GNUNET_DISK_OPEN_READ,
- GNUNET_DISK_PERM_NONE);
+ dc->rfh =
+ GNUNET_DISK_file_open (dc->filename, GNUNET_DISK_OPEN_READ,
+ GNUNET_DISK_PERM_NONE);
if (dc->top_request->state == BRS_CHK_SET)
{
- if (dc->rfh != NULL)
+ if (NULL != dc->rfh)
{
/* first, try top-down */
-#if DEBUG_DOWNLOAD
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
"Trying top-down reconstruction for `%s'\n", dc->filename);
-#endif
try_top_down_reconstruction (dc, dc->top_request);
switch (dc->top_request->state)
{
break; /* normal, some blocks already down */
case BRS_DOWNLOAD_UP:
/* already done entirely, party! */
- if (dc->rfh != NULL)
+ if (NULL != dc->rfh)
{
- /* avoid hanging on to file handle longer than
+ /* avoid hanging on to file handle longer than
* necessary */
GNUNET_DISK_file_close (dc->rfh);
dc->rfh = NULL;
if ((GNUNET_FS_uri_chk_get_file_size (dc->uri) <= MAX_INLINE_SIZE) &&
(NULL != dc->meta))
{
-#if DEBUG_DOWNLOAD
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
"Trying to find embedded meta data for download of size %llu with %u bytes MD\n",
(unsigned long long) GNUNET_FS_uri_chk_get_file_size (dc->uri),
(unsigned int)
GNUNET_CONTAINER_meta_data_get_serialized_size (dc->meta));
-#endif
GNUNET_CONTAINER_meta_data_iterate (dc->meta, &match_full_data, dc);
- if (dc->top_request->state == BRS_DOWNLOAD_UP)
+ if (BRS_DOWNLOAD_UP == dc->top_request->state)
{
- if (dc->rfh != NULL)
+ if (NULL != dc->rfh)
{
- /* avoid hanging on to file handle longer than
+ /* avoid hanging on to file handle longer than
* necessary */
GNUNET_DISK_file_close (dc->rfh);
dc->rfh = NULL;
return; /* finished, status update was already done for us */
}
}
- if (dc->rfh != NULL)
+ if (NULL != dc->rfh)
{
- /* finally, try bottom-up */
-#if DEBUG_DOWNLOAD
+ /* finally, actually run bottom-up */
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
"Trying bottom-up reconstruction of file `%s'\n", dc->filename);
-#endif
- dc->te = GNUNET_FS_tree_encoder_create (dc->h,
- dc->old_file_size,
- dc,
- &fh_reader,
- &reconstruct_cb,
- NULL, &reconstruct_cont);
- dc->task = GNUNET_SCHEDULER_add_now (&get_next_block, dc);
+ dc->te =
+ GNUNET_FS_tree_encoder_create (dc->h,
+ GNUNET_FS_uri_chk_get_file_size (dc->uri),
+ dc,
+ &fh_reader,
+ &reconstruct_cb,
+ NULL,
+ &reconstruct_cont);
+ dc->task = GNUNET_SCHEDULER_add_now (&get_next_block,
+ dc);
}
else
{
/* simple, top-level download */
+ dc->issue_requests = GNUNET_YES;
schedule_block_download (dc, dc->top_request);
}
- if (dc->top_request->state == BRS_DOWNLOAD_UP)
+ if (BRS_DOWNLOAD_UP == dc->top_request->state)
check_completed (dc);
}
struct GNUNET_FS_DownloadContext *dc = cls;
struct GNUNET_FS_ProgressInfo pi;
- if (dc->top != NULL)
+ if (NULL != dc->top)
GNUNET_FS_end_top (dc->h, dc->top);
while (NULL != dc->child_head)
GNUNET_FS_download_signal_suspend_ (dc->child_head);
- if (dc->search != NULL)
+ if (NULL != dc->search)
{
dc->search->download = NULL;
dc->search = NULL;
}
- if (dc->job_queue != NULL)
+ if (NULL != dc->job_queue)
{
GNUNET_FS_dequeue_ (dc->job_queue);
dc->job_queue = NULL;
}
- if (dc->parent != NULL)
- GNUNET_CONTAINER_DLL_remove (dc->parent->child_head,
- dc->parent->child_tail, dc);
- if (dc->task != GNUNET_SCHEDULER_NO_TASK)
+ if (NULL != dc->parent)
+ GNUNET_CONTAINER_DLL_remove (dc->parent->child_head, dc->parent->child_tail,
+ dc);
+ if (NULL != dc->task)
{
GNUNET_SCHEDULER_cancel (dc->task);
- dc->task = GNUNET_SCHEDULER_NO_TASK;
+ dc->task = NULL;
}
pi.status = GNUNET_FS_STATUS_DOWNLOAD_SUSPEND;
GNUNET_FS_download_make_status_ (&pi, dc);
- if (dc->te != NULL)
+ if (NULL != dc->te)
{
- GNUNET_FS_tree_encoder_finish (dc->te, NULL, NULL);
+ GNUNET_FS_tree_encoder_finish (dc->te, NULL);
dc->te = NULL;
}
- if (dc->rfh != NULL)
+ if (NULL != dc->rfh)
{
GNUNET_DISK_file_close (dc->rfh);
dc->rfh = NULL;
}
GNUNET_FS_free_download_request_ (dc->top_request);
- if (dc->active != NULL)
+ if (NULL != dc->active)
{
GNUNET_CONTAINER_multihashmap_destroy (dc->active);
dc->active = NULL;
GNUNET_FS_uri_destroy (dc->uri);
GNUNET_free_non_null (dc->temp_filename);
GNUNET_free_non_null (dc->serialization);
+ GNUNET_assert (NULL == dc->job_queue);
GNUNET_free (dc);
}
/**
- * Download parts of a file. Note that this will store
- * the blocks at the respective offset in the given file. Also, the
- * download is still using the blocking of the underlying FS
- * encoding. As a result, the download may *write* outside of the
- * given boundaries (if offset and length do not match the 32k FS
- * block boundaries). <p>
- *
- * This function should be used to focus a download towards a
- * particular portion of the file (optimization), not to strictly
- * limit the download to exactly those bytes.
+ * Helper function to setup the download context.
*
* @param h handle to the file sharing subsystem
* @param uri the URI of the file (determines what to download); CHK or LOC URI
* @param anonymity anonymity level to use for the download
* @param options various options
* @param cctx initial value for the client context for this download
- * @param parent parent download to associate this download with (use NULL
- * for top-level downloads; useful for manually-triggered recursive downloads)
* @return context that can be used to control this download
*/
struct GNUNET_FS_DownloadContext *
-GNUNET_FS_download_start (struct GNUNET_FS_Handle *h,
- const struct GNUNET_FS_Uri *uri,
- const struct GNUNET_CONTAINER_MetaData *meta,
- const char *filename,
- const char *tempname,
- uint64_t offset,
- uint64_t length,
- uint32_t anonymity,
- enum GNUNET_FS_DownloadOptions options,
- void *cctx, struct GNUNET_FS_DownloadContext *parent)
+create_download_context (struct GNUNET_FS_Handle *h,
+ const struct GNUNET_FS_Uri *uri,
+ const struct GNUNET_CONTAINER_MetaData *meta,
+ const char *filename,
+ const char *tempname,
+ uint64_t offset,
+ uint64_t length,
+ uint32_t anonymity,
+ enum GNUNET_FS_DownloadOptions options,
+ void *cctx)
{
struct GNUNET_FS_DownloadContext *dc;
GNUNET_assert (GNUNET_FS_uri_test_chk (uri) || GNUNET_FS_uri_test_loc (uri));
-
if ((offset + length < offset) ||
(offset + length > GNUNET_FS_uri_chk_get_file_size (uri)))
{
GNUNET_break (0);
return NULL;
}
-#if DEBUG_DOWNLOAD
+ dc = GNUNET_new (struct GNUNET_FS_DownloadContext);
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "Starting download `%s' of %llu bytes\n",
- filename, (unsigned long long) length);
-#endif
- dc = GNUNET_malloc (sizeof (struct GNUNET_FS_DownloadContext));
+ "Starting download %p, %u bytes at offset %llu\n",
+ dc,
+ (unsigned int) length,
+ (unsigned long long) offset);
dc->h = h;
- dc->parent = parent;
- if (parent != NULL)
- {
- GNUNET_CONTAINER_DLL_insert (parent->child_head, parent->child_tail, dc);
- }
dc->uri = GNUNET_FS_uri_dup (uri);
dc->meta = GNUNET_CONTAINER_meta_data_duplicate (meta);
dc->client_info = cctx;
{
dc->filename = GNUNET_strdup (filename);
if (GNUNET_YES == GNUNET_DISK_file_test (filename))
- GNUNET_DISK_file_size (filename, &dc->old_file_size, GNUNET_YES);
+ GNUNET_break (GNUNET_OK == GNUNET_DISK_file_size (filename, &dc->old_file_size, GNUNET_YES, GNUNET_YES));
}
if (GNUNET_FS_uri_test_loc (dc->uri))
GNUNET_assert (GNUNET_OK ==
dc->anonymity = anonymity;
dc->options = options;
dc->active =
- GNUNET_CONTAINER_multihashmap_create (1 + 2 * (length / DBLOCK_SIZE));
+ GNUNET_CONTAINER_multihashmap_create (1 + 2 * (length / DBLOCK_SIZE), GNUNET_NO);
dc->treedepth =
GNUNET_FS_compute_depth (GNUNET_FS_uri_chk_get_file_size (dc->uri));
- if ((filename == NULL) && (is_recursive_download (dc)))
+ if ((NULL == filename) && (is_recursive_download (dc)))
{
- if (tempname != NULL)
+ if (NULL != tempname)
dc->temp_filename = GNUNET_strdup (tempname);
else
dc->temp_filename = GNUNET_DISK_mktemp ("gnunet-directory-download-tmp");
}
-
-#if DEBUG_DOWNLOAD
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "Download tree has depth %u\n", dc->treedepth);
-#endif
- if (parent == NULL)
- {
- dc->top = GNUNET_FS_make_top (dc->h,
- &GNUNET_FS_download_signal_suspend_, dc);
- }
- dc->task = GNUNET_SCHEDULER_add_now (&GNUNET_FS_download_start_task_, dc);
+ "Starting download `%s' of %llu bytes with tree depth %u\n",
+ filename,
+ (unsigned long long) length,
+ dc->treedepth);
+ GNUNET_assert (NULL == dc->job_queue);
+ dc->task = GNUNET_SCHEDULER_add_now (&GNUNET_FS_download_start_task_,
+ dc);
+ return dc;
+}
+
+
+/**
+ * Download parts of a file. Note that this will store
+ * the blocks at the respective offset in the given file. Also, the
+ * download is still using the blocking of the underlying FS
+ * encoding. As a result, the download may *write* outside of the
+ * given boundaries (if offset and length do not match the 32k FS
+ * block boundaries). <p>
+ *
+ * This function should be used to focus a download towards a
+ * particular portion of the file (optimization), not to strictly
+ * limit the download to exactly those bytes.
+ *
+ * @param h handle to the file sharing subsystem
+ * @param uri the URI of the file (determines what to download); CHK or LOC URI
+ * @param meta known metadata for the file (can be NULL)
+ * @param filename where to store the file, maybe NULL (then no file is
+ * created on disk and data must be grabbed from the callbacks)
+ * @param tempname where to store temporary file data, not used if filename is non-NULL;
+ * can be NULL (in which case we will pick a name if needed); the temporary file
+ * may already exist, in which case we will try to use the data that is there and
+ * if it is not what is desired, will overwrite it
+ * @param offset at what offset should we start the download (typically 0)
+ * @param length how many bytes should be downloaded starting at offset
+ * @param anonymity anonymity level to use for the download
+ * @param options various options
+ * @param cctx initial value for the client context for this download
+ * @param parent parent download to associate this download with (use NULL
+ * for top-level downloads; useful for manually-triggered recursive downloads)
+ * @return context that can be used to control this download
+ */
+struct GNUNET_FS_DownloadContext *
+GNUNET_FS_download_start (struct GNUNET_FS_Handle *h,
+ const struct GNUNET_FS_Uri *uri,
+ const struct GNUNET_CONTAINER_MetaData *meta,
+ const char *filename,
+ const char *tempname,
+ uint64_t offset,
+ uint64_t length,
+ uint32_t anonymity,
+ enum GNUNET_FS_DownloadOptions options,
+ void *cctx,
+ struct GNUNET_FS_DownloadContext *parent)
+{
+ struct GNUNET_FS_DownloadContext *dc;
+
+ dc = create_download_context (h,
+ uri,
+ meta,
+ filename,
+ tempname,
+ offset,
+ length,
+ anonymity,
+ options,
+ cctx);
+ if (NULL == dc)
+ return NULL;
+ dc->parent = parent;
+ if (NULL != parent)
+ GNUNET_CONTAINER_DLL_insert (parent->child_head, parent->child_tail, dc);
+ else if (0 == (GNUNET_FS_DOWNLOAD_IS_PROBE & options) )
+ dc->top =
+ GNUNET_FS_make_top (dc->h, &GNUNET_FS_download_signal_suspend_, dc);
return dc;
}
{
struct GNUNET_FS_DownloadContext *dc;
- if ((sr == NULL) || (sr->download != NULL))
+ if ((NULL == sr) || (NULL != sr->download))
{
GNUNET_break (0);
return NULL;
}
- GNUNET_assert (GNUNET_FS_uri_test_chk (sr->uri) ||
- GNUNET_FS_uri_test_loc (sr->uri));
- if ((offset + length < offset) ||
- (offset + length > sr->uri->data.chk.file_length))
- {
- GNUNET_break (0);
+ dc = create_download_context (h,
+ sr->uri,
+ sr->meta,
+ filename,
+ tempname,
+ offset,
+ length,
+ anonymity,
+ options,
+ cctx);
+ if (NULL == dc)
return NULL;
- }
-#if DEBUG_DOWNLOAD
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "Starting download `%s' of %llu bytes\n",
- filename, (unsigned long long) length);
-#endif
- dc = GNUNET_malloc (sizeof (struct GNUNET_FS_DownloadContext));
- dc->h = h;
dc->search = sr;
sr->download = dc;
- if (sr->probe_ctx != NULL)
+ if (NULL != sr->probe_ctx)
{
GNUNET_FS_download_stop (sr->probe_ctx, GNUNET_YES);
sr->probe_ctx = NULL;
+ GNUNET_FS_stop_probe_ping_task_ (sr);
}
- dc->uri = GNUNET_FS_uri_dup (sr->uri);
- dc->meta = GNUNET_CONTAINER_meta_data_duplicate (sr->meta);
- dc->client_info = cctx;
- dc->start_time = GNUNET_TIME_absolute_get ();
- if (NULL != filename)
- {
- dc->filename = GNUNET_strdup (filename);
- if (GNUNET_YES == GNUNET_DISK_file_test (filename))
- GNUNET_DISK_file_size (filename, &dc->old_file_size, GNUNET_YES);
- }
- if (GNUNET_FS_uri_test_loc (dc->uri))
- GNUNET_assert (GNUNET_OK ==
- GNUNET_FS_uri_loc_get_peer_identity (dc->uri, &dc->target));
- dc->offset = offset;
- dc->length = length;
- dc->anonymity = anonymity;
- dc->options = options;
- dc->active =
- GNUNET_CONTAINER_multihashmap_create (1 + 2 * (length / DBLOCK_SIZE));
- dc->treedepth =
- GNUNET_FS_compute_depth (GNUNET_ntohll (dc->uri->data.chk.file_length));
- if ((filename == NULL) && (is_recursive_download (dc)))
- {
- if (tempname != NULL)
- dc->temp_filename = GNUNET_strdup (tempname);
- else
- dc->temp_filename = GNUNET_DISK_mktemp ("gnunet-directory-download-tmp");
- }
-
-#if DEBUG_DOWNLOAD
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "Download tree has depth %u\n", dc->treedepth);
-#endif
- dc->task = GNUNET_SCHEDULER_add_now (&GNUNET_FS_download_start_task_, dc);
return dc;
}
{
if (dc->completed == dc->length)
return;
- GNUNET_assert (dc->job_queue == NULL);
- dc->job_queue = GNUNET_FS_queue_ (dc->h,
- &activate_fs_download,
- &deactivate_fs_download,
- dc,
- (dc->length + DBLOCK_SIZE -
- 1) / DBLOCK_SIZE);
+ if (NULL != dc->mq)
+ return; /* already running */
+ GNUNET_assert (NULL == dc->job_queue);
+ GNUNET_assert (NULL == dc->task);
+ GNUNET_assert (NULL != dc->active);
+ dc->job_queue
+ = GNUNET_FS_queue_ (dc->h,
+ &activate_fs_download,
+ &deactivate_fs_download,
+ dc,
+ (dc->length + DBLOCK_SIZE - 1) / DBLOCK_SIZE,
+ (0 == (dc->options & GNUNET_FS_DOWNLOAD_IS_PROBE))
+ ? GNUNET_FS_QUEUE_PRIORITY_NORMAL
+ : GNUNET_FS_QUEUE_PRIORITY_PROBE);
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Download %p put into queue as job %p\n",
+ dc,
+ dc->job_queue);
+}
+
+/**
+ * Suspend a download.
+ *
+ * @param dc handle for the download
+ */
+void
+GNUNET_FS_download_suspend (struct GNUNET_FS_DownloadContext *dc)
+{
+ deactivate_fs_download(dc);
+}
+
+
+/**
+ * Resume a suspended download.
+ *
+ * @param dc handle for the download
+ */
+void
+GNUNET_FS_download_resume (struct GNUNET_FS_DownloadContext *dc)
+{
+ struct GNUNET_FS_ProgressInfo pi;
+
+ pi.status = GNUNET_FS_STATUS_DOWNLOAD_ACTIVE;
+ GNUNET_FS_download_make_status_ (&pi, dc);
+
+ GNUNET_assert (NULL == dc->task);
+ dc->job_queue
+ = GNUNET_FS_queue_ (dc->h,
+ &activate_fs_download,
+ &deactivate_fs_download,
+ dc, (dc->length + DBLOCK_SIZE - 1) / DBLOCK_SIZE,
+ (0 == (dc->options & GNUNET_FS_DOWNLOAD_IS_PROBE))
+ ? GNUNET_FS_QUEUE_PRIORITY_NORMAL
+ : GNUNET_FS_QUEUE_PRIORITY_PROBE);
+
}
* @param do_delete delete files of incomplete downloads
*/
void
-GNUNET_FS_download_stop (struct GNUNET_FS_DownloadContext *dc, int do_delete)
+GNUNET_FS_download_stop (struct GNUNET_FS_DownloadContext *dc,
+ int do_delete)
{
struct GNUNET_FS_ProgressInfo pi;
int have_children;
+ int search_was_null;
- if (dc->top != NULL)
+ if (NULL != dc->top)
GNUNET_FS_end_top (dc->h, dc->top);
-
-
- if (dc->task != GNUNET_SCHEDULER_NO_TASK)
+ if (NULL != dc->task)
{
GNUNET_SCHEDULER_cancel (dc->task);
- dc->task = GNUNET_SCHEDULER_NO_TASK;
+ dc->task = NULL;
}
- if (dc->search != NULL)
+ search_was_null = (NULL == dc->search);
+ if (NULL != dc->search)
{
dc->search->download = NULL;
+ GNUNET_FS_search_result_sync_ (dc->search);
dc->search = NULL;
}
- if (dc->job_queue != NULL)
+ if (NULL != dc->job_queue)
{
GNUNET_FS_dequeue_ (dc->job_queue);
dc->job_queue = NULL;
}
- if (dc->te != NULL)
+ if (NULL != dc->te)
{
- GNUNET_FS_tree_encoder_finish (dc->te, NULL, NULL);
+ GNUNET_FS_tree_encoder_finish (dc->te, NULL);
dc->te = NULL;
}
have_children = (NULL != dc->child_head) ? GNUNET_YES : GNUNET_NO;
while (NULL != dc->child_head)
GNUNET_FS_download_stop (dc->child_head, do_delete);
- if (dc->parent != NULL)
+ if (NULL != dc->parent)
GNUNET_CONTAINER_DLL_remove (dc->parent->child_head,
- dc->parent->child_tail, dc);
- if (dc->serialization != NULL)
+ dc->parent->child_tail,
+ dc);
+ if (NULL != dc->serialization)
GNUNET_FS_remove_sync_file_ (dc->h,
- ((dc->parent != NULL) || (dc->search != NULL))
- ? GNUNET_FS_SYNC_PATH_CHILD_DOWNLOAD
- : GNUNET_FS_SYNC_PATH_MASTER_DOWNLOAD,
+ ((NULL != dc->parent) ||
+ (! search_was_null)) ? GNUNET_FS_SYNC_PATH_CHILD_DOWNLOAD :
+ GNUNET_FS_SYNC_PATH_MASTER_DOWNLOAD,
dc->serialization);
- if ((GNUNET_YES == have_children) && (dc->parent == NULL))
+ if ((GNUNET_YES == have_children) && (NULL == dc->parent))
GNUNET_FS_remove_sync_dir_ (dc->h,
- (dc->search != NULL)
- ? GNUNET_FS_SYNC_PATH_CHILD_DOWNLOAD
- : GNUNET_FS_SYNC_PATH_MASTER_DOWNLOAD,
+ (! search_was_null) ? GNUNET_FS_SYNC_PATH_CHILD_DOWNLOAD :
+ GNUNET_FS_SYNC_PATH_MASTER_DOWNLOAD,
dc->serialization);
pi.status = GNUNET_FS_STATUS_DOWNLOAD_STOPPED;
GNUNET_FS_download_make_status_ (&pi, dc);
GNUNET_FS_free_download_request_ (dc->top_request);
dc->top_request = NULL;
- if (dc->active != NULL)
+ if (NULL != dc->active)
{
GNUNET_CONTAINER_multihashmap_destroy (dc->active);
dc->active = NULL;
}
- if (dc->filename != NULL)
+ if (NULL != dc->filename)
{
if ((dc->completed != dc->length) && (GNUNET_YES == do_delete))
{
- if (0 != UNLINK (dc->filename))
+ if ( (0 != UNLINK (dc->filename)) &&
+ (ENOENT != errno) )
GNUNET_log_strerror_file (GNUNET_ERROR_TYPE_WARNING,
- "unlink", dc->filename);
+ "unlink",
+ dc->filename);
}
GNUNET_free (dc->filename);
}
{
if (0 != UNLINK (dc->temp_filename))
GNUNET_log_strerror_file (GNUNET_ERROR_TYPE_ERROR,
- "unlink", dc->temp_filename);
+ "unlink",
+ dc->temp_filename);
GNUNET_free (dc->temp_filename);
}
GNUNET_free_non_null (dc->serialization);
+ GNUNET_assert (NULL == dc->job_queue);
GNUNET_free (dc);
}