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 2, or (at your
+ 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
* @file include/gnunet_fs_service.h
* @brief API for file-sharing via GNUnet
* @author Christian Grothoff
- *
- * TODO:
- * - extend API with support for publish simulation (-s)
- * and URI-argument binding to keyword/namespace (-u)
*/
#ifndef GNUNET_FS_LIB_H
#define GNUNET_FS_LIB_H
* @param is_mandatory is the keyword mandatory (in a search)
* @return GNUNET_OK to continue to iterate, GNUNET_SYSERR to abort
*/
-typedef int (*GNUNET_FS_KeywordIterator) (void *cls,
- const char *keyword,
- int is_mandatory);
+typedef int (*GNUNET_FS_KeywordIterator) (void *cls, const char *keyword,
+ int is_mandatory);
/**
* Get a unique key from a URI. This is for putting URIs
* @param uri uri to convert to a unique key
* @param key wherer to store the unique key
*/
-void
-GNUNET_FS_uri_to_key (const struct GNUNET_FS_Uri *uri,
- GNUNET_HashCode * key);
+void
+GNUNET_FS_uri_to_key (const struct GNUNET_FS_Uri *uri, GNUNET_HashCode * key);
/**
* Convert a URI to a UTF-8 String.
GNUNET_FS_uri_ksk_to_string_fancy (const struct GNUNET_FS_Uri *uri);
+/**
+ * Add the given keyword to the set of keywords represented by the URI.
+ * Does nothing if the keyword is already present.
+ *
+ * @param uri ksk uri to modify
+ * @param keyword keyword to add
+ * @param is_mandatory is this keyword mandatory?
+ */
+void
+GNUNET_FS_uri_ksk_add_keyword (struct GNUNET_FS_Uri *uri, const char *keyword,
+ int is_mandatory);
+
+
+/**
+ * Remove the given keyword from the set of keywords represented by the URI.
+ * Does nothing if the keyword is not present.
+ *
+ * @param uri ksk uri to modify
+ * @param keyword keyword to add
+ */
+void
+GNUNET_FS_uri_ksk_remove_keyword (struct GNUNET_FS_Uri *uri,
+ const char *keyword);
+
+
/**
* Convert a UTF-8 String to a URI.
*
* @return NULL on error
*/
struct GNUNET_FS_Uri *
-GNUNET_FS_uri_parse (const char *uri,
- char **emsg);
+GNUNET_FS_uri_parse (const char *uri, char **emsg);
/**
* Free URI.
*
* @param uri uri to free
*/
-void
+void
GNUNET_FS_uri_destroy (struct GNUNET_FS_Uri *uri);
* @param uri ksk uri to get the number of keywords from
* @return 0 if this is not a keyword URI
*/
-unsigned int
+unsigned int
GNUNET_FS_uri_ksk_get_keyword_count (const struct GNUNET_FS_Uri *uri);
* @return -1 if this is not a keyword URI, otherwise number of
* keywords iterated over until iterator aborted
*/
-int
+int
GNUNET_FS_uri_ksk_get_keywords (const struct GNUNET_FS_Uri *uri,
- GNUNET_FS_KeywordIterator iterator,
- void *iterator_cls);
+ GNUNET_FS_KeywordIterator iterator,
+ void *iterator_cls);
/**
*/
int
GNUNET_FS_uri_loc_get_peer_identity (const struct GNUNET_FS_Uri *uri,
- struct GNUNET_PeerIdentity * peer);
+ struct GNUNET_PeerIdentity *peer);
/**
*/
struct GNUNET_FS_Uri *
GNUNET_FS_uri_loc_create (const struct GNUNET_FS_Uri *baseUri,
- struct GNUNET_CONFIGURATION_Handle *cfg,
- struct GNUNET_TIME_Absolute expiration_time);
+ const struct GNUNET_CONFIGURATION_Handle *cfg,
+ struct GNUNET_TIME_Absolute expiration_time);
/**
*/
struct GNUNET_FS_Uri *
GNUNET_FS_uri_ksk_merge (const struct GNUNET_FS_Uri *u1,
- const struct GNUNET_FS_Uri *u2);
+ const struct GNUNET_FS_Uri *u2);
/**
* if keywords is not legal (i.e. empty).
*/
struct GNUNET_FS_Uri *
-GNUNET_FS_uri_ksk_create (const char *keywords,
- char **emsg);
+GNUNET_FS_uri_ksk_create (const char *keywords, char **emsg);
/**
* if keywords is not legal (i.e. empty).
*/
struct GNUNET_FS_Uri *
-GNUNET_FS_uri_ksk_create_from_args (unsigned int argc,
- const char **argv);
+GNUNET_FS_uri_ksk_create_from_args (unsigned int argc, const char **argv);
/**
* @param u2 the other URI
* @return GNUNET_YES if the URIs are equal
*/
-int
+int
GNUNET_FS_uri_test_equal (const struct GNUNET_FS_Uri *u1,
- const struct GNUNET_FS_Uri *u2);
+ const struct GNUNET_FS_Uri *u2);
/**
GNUNET_FS_uri_test_sks (const struct GNUNET_FS_Uri *uri);
+/**
+ * Handle to one of our namespaces.
+ */
+struct GNUNET_FS_Namespace;
+
+
+/**
+ * Create an SKS URI from a namespace and an identifier.
+ *
+ * @param ns namespace
+ * @param id identifier
+ * @param emsg where to store an error message
+ * @return an FS URI for the given namespace and identifier
+ */
+struct GNUNET_FS_Uri *
+GNUNET_FS_uri_sks_create (struct GNUNET_FS_Namespace *ns, const char *id,
+ char **emsg);
+
+
+/**
+ * Create an SKS URI from a namespace ID and an identifier.
+ *
+ * @param nsid namespace ID
+ * @param id identifier
+ * @return an FS URI for the given namespace and identifier
+ */
+struct GNUNET_FS_Uri *
+GNUNET_FS_uri_sks_create_from_nsid (GNUNET_HashCode * nsid, const char *id);
+
+
/**
* Get the ID of a namespace from the given
* namespace URI.
* @param nsid where to store the ID of the namespace
* @return GNUNET_OK on success
*/
-int
+int
GNUNET_FS_uri_sks_get_namespace (const struct GNUNET_FS_Uri *uri,
- GNUNET_HashCode * nsid);
+ GNUNET_HashCode * nsid);
/**
*/
char *
GNUNET_FS_uri_sks_to_string_fancy (struct GNUNET_CONFIGURATION_Handle *cfg,
- const struct GNUNET_FS_Uri *uri);
+ const struct GNUNET_FS_Uri *uri);
/**
* @param uri the uri
* @return GNUNET_YES if this is a KSK uri
*/
-int
+int
GNUNET_FS_uri_test_ksk (const struct GNUNET_FS_Uri *uri);
* @param uri the uri to check
* @return GNUNET_YES if this is a CHK uri
*/
-int
+int
GNUNET_FS_uri_test_chk (const struct GNUNET_FS_Uri *uri);
* @param uri the CHK (or LOC) URI to inspect
* @return size of the file as specified in the CHK URI
*/
-uint64_t
+uint64_t
GNUNET_FS_uri_chk_get_file_size (const struct GNUNET_FS_Uri *uri);
* @param uri the uri to check
* @return GNUNET_YES if this is a LOC uri
*/
-int
+int
GNUNET_FS_uri_test_loc (const struct GNUNET_FS_Uri *uri);
* @return NULL on error, otherwise a KSK URI
*/
struct GNUNET_FS_Uri *
-GNUNET_FS_uri_ksk_create_from_meta_data (const struct GNUNET_CONTAINER_MetaData *md);
+GNUNET_FS_uri_ksk_create_from_meta_data (const struct GNUNET_CONTAINER_MetaData
+ *md);
/* ******************** command-line option parsing API *********************** */
* @return GNUNET_OK on success
*/
int
-GNUNET_FS_getopt_set_keywords (struct GNUNET_GETOPT_CommandLineProcessorContext* ctx,
- void *scls,
- const char *option,
- const char *value);
+GNUNET_FS_getopt_set_keywords (struct GNUNET_GETOPT_CommandLineProcessorContext
+ *ctx, void *scls, const char *option,
+ const char *value);
/**
* @return GNUNET_OK on success
*/
int
-GNUNET_FS_getopt_set_metadata (struct GNUNET_GETOPT_CommandLineProcessorContext* ctx,
- void *scls,
- const char *option,
- const char *value);
+GNUNET_FS_getopt_set_metadata (struct GNUNET_GETOPT_CommandLineProcessorContext
+ *ctx, void *scls, const char *option,
+ const char *value);
*/
GNUNET_FS_STATUS_DOWNLOAD_STOPPED,
+ /**
+ * Notification that this download is now actively being
+ * pursued (as opposed to waiting in the queue).
+ */
+ GNUNET_FS_STATUS_DOWNLOAD_ACTIVE,
+
+ /**
+ * Notification that this download is no longer actively
+ * being pursued (back in the queue).
+ */
+ GNUNET_FS_STATUS_DOWNLOAD_INACTIVE,
+
+ /**
+ * Notification that this download is no longer part of a
+ * recursive download or search but now a 'stand-alone'
+ * download (and may thus need to be moved in the GUI
+ * into a different category).
+ */
+ GNUNET_FS_STATUS_DOWNLOAD_LOST_PARENT,
+
/**
* First event generated when a client requests
* a search to begin or when a namespace result
* be generated in this case.
*/
GNUNET_FS_STATUS_SEARCH_SUSPEND,
-
- /**
- * Event generated for each search result
- * when the respective search is suspended.
- */
- GNUNET_FS_STATUS_SEARCH_SUSPEND_RESULT,
/**
* This search has yielded a result.
*/
GNUNET_FS_STATUS_SEARCH_RESULT_STOPPED,
+ /**
+ * Event generated for each search result
+ * when the respective search is suspended.
+ */
+ GNUNET_FS_STATUS_SEARCH_RESULT_SUSPEND,
+
/**
* Last message from a search; this signals
* that there will be no further events associated
/**
* Notification that we started to unindex a file.
- */
+ */
GNUNET_FS_STATUS_UNINDEX_START,
/**
* was stopped (final event for this action).
*/
GNUNET_FS_STATUS_UNINDEX_STOPPED
-
};
-/**
- * Handle to one of our namespaces.
- */
-struct GNUNET_FS_Namespace;
-
-
/**
* Handle for controlling an upload.
*/
struct GNUNET_FS_SearchContext;
+/**
+ * Result from a search. Opaque handle to refer to the search
+ * (typically used when starting a download associated with the search
+ * result).
+ */
+struct GNUNET_FS_SearchResult;
+
+
/**
* Context for controlling a download.
*/
* information about what is going on.
*/
struct GNUNET_FS_ProgressInfo
-{
+{
/**
* Values that depend on the event type.
*/
- union {
-
+ union
+ {
+
/**
* Values for all "GNUNET_FS_STATUS_PUBLISH_*" events.
*/
- struct {
+ struct
+ {
/**
* Context for controlling the upload.
*/
- struct GNUNET_FS_PublishContext *sc;
+ struct GNUNET_FS_PublishContext *pc;
/**
* Information about the file that is being publishd.
const struct GNUNET_FS_FileInformation *fi;
/**
- * Client context pointer (set the last time
- * by the client for this operation; initially
- * NULL on START/RESUME events).
+ * Client context pointer (set the last time by the client for
+ * this operation; initially NULL on START/RESUME events).
*/
void *cctx;
* Name of the file being published; can be NULL.
*/
const char *filename;
-
+
/**
* How large is the file overall? For directories,
* this is only the size of the directory itself,
* At what time do we expect to finish the upload?
* (will be a value in the past for completed
* uploads).
- */
+ */
struct GNUNET_TIME_Relative eta;
/**
/**
* Additional values for specific events.
*/
- union {
+ union
+ {
- /**
+ /**
* These values are only valid for
* GNUNET_FS_STATUS_PUBLISH_PROGRESS events.
*/
- struct {
-
- /**
+ struct
+ {
+
+ /**
* Data block we just published.
*/
- const void *data;
-
- /**
+ const void *data;
+
+ /**
* At what offset in the file is "data"?
*/
- uint64_t offset;
-
- /**
+ uint64_t offset;
+
+ /**
* Length of the data block.
*/
- uint64_t data_len;
+ uint64_t data_len;
- /**
+ /**
* Depth of the given block in the tree;
- * 0 would be the highest level (the first
- * call is guaranteed to be for the lowest
- * level).
+ * 0 would be the lowest level (DBLOCKs).
*/
- unsigned int depth;
+ unsigned int depth;
- } progress;
+ } progress;
- /**
+ /**
* These values are only valid for
* GNUNET_FS_STATUS_PUBLISH_RESUME events.
*/
- struct {
-
- /**
+ struct
+ {
+
+ /**
* Error message, NULL if no error was encountered so far.
*/
- const char *message;
-
- /**
+ const char *message;
+
+ /**
* URI of the file (if the download had been completed)
*/
- const struct GNUNET_FS_Uri *chk_uri;
+ const struct GNUNET_FS_Uri *chk_uri;
- } resume;
+ } resume;
- /**
+ /**
* These values are only valid for
* GNUNET_FS_STATUS_PUBLISH_COMPLETED events.
*/
- struct {
-
- /**
+ struct
+ {
+
+ /**
* URI of the file.
*/
- const struct GNUNET_FS_Uri *chk_uri;
+ const struct GNUNET_FS_Uri *chk_uri;
- } completed;
+ } completed;
- /**
+ /**
* These values are only valid for
* GNUNET_FS_STATUS_PUBLISH_ERROR events.
*/
- struct {
-
- /**
+ struct
+ {
+
+ /**
* Error message, never NULL.
*/
- const char *message;
+ const char *message;
- } error;
+ } error;
} specifics;
} publish;
-
+
/**
* Values for all "GNUNET_FS_STATUS_DOWNLOAD_*" events.
*/
- struct {
+ struct
+ {
/**
* Context for controlling the download.
* (if this is a file in a directory or a subdirectory).
*/
void *pctx;
-
+
+ /**
+ * Client context pointer for the associated search operation
+ * (specifically, context pointer for the specific search
+ * result, not the overall search); only set if this
+ * download was started from a search result.
+ */
+ void *sctx;
+
/**
* URI used for this download.
*/
* Name of the file that we are downloading.
*/
const char *filename;
-
+
/**
* How large is the download overall? This
* is NOT necessarily the size from the
* URI since we may be doing a partial download.
*/
- uint64_t length;
+ uint64_t size;
/**
* At what time do we expect to finish the download?
* (will be a value in the past for completed
* uploads).
- */
+ */
struct GNUNET_TIME_Relative eta;
/**
* How long has this download been active?
- */
+ */
struct GNUNET_TIME_Relative duration;
/**
*/
uint32_t anonymity;
+ /**
+ * Is the download currently active.
+ */
+ int is_active;
+
/**
* Additional values for specific events.
*/
- union {
-
- /**
+ union
+ {
+
+ /**
* These values are only valid for
* GNUNET_FS_STATUS_DOWNLOAD_PROGRESS events.
*/
- struct {
-
- /**
- * Data block we just obtained.
+ struct
+ {
+
+ /**
+ * Data block we just obtained, can be NULL (even if
+ * data_len > 0) if we found the entire block 'intact' on
+ * disk. In this case, it is also possible for 'data_len'
+ * to be larger than an individual (32k) block.
*/
- const void *data;
-
- /**
+ const void *data;
+
+ /**
* At what offset in the file is "data"?
*/
- uint64_t offset;
-
- /**
+ uint64_t offset;
+
+ /**
* Length of the data block.
*/
- uint64_t data_len;
+ uint64_t data_len;
- /**
+ /**
* Depth of the given block in the tree;
- * 0 would be the highest level (the first
- * call is guaranteed to be for the lowest
- * level).
+ * 0 would be the lowest level (DBLOCKS).
*/
- unsigned int depth;
+ unsigned int depth;
- } progress;
+ } progress;
- /**
+ /**
* These values are only valid for
* GNUNET_FS_STATUS_DOWNLOAD_START events.
*/
- struct {
+ struct
+ {
- /**
+ /**
* Known metadata for the download.
*/
- const struct GNUNET_CONTAINER_MetaData *meta;
-
- } start;
+ const struct GNUNET_CONTAINER_MetaData *meta;
- /**
+ } start;
+
+ /**
* These values are only valid for
* GNUNET_FS_STATUS_DOWNLOAD_RESUME events.
*/
- struct {
+ struct
+ {
- /**
+ /**
* Known metadata for the download.
*/
- const struct GNUNET_CONTAINER_MetaData *meta;
+ const struct GNUNET_CONTAINER_MetaData *meta;
- /**
+ /**
* Error message, NULL if we have not encountered any error yet.
*/
- const char *message;
+ const char *message;
- } resume;
+ } resume;
- /**
+ /**
* These values are only valid for
* GNUNET_FS_STATUS_DOWNLOAD_ERROR events.
*/
- struct {
+ struct
+ {
- /**
+ /**
* Error message.
*/
- const char *message;
+ const char *message;
- } error;
+ } error;
} specifics;
/**
* Values for all "GNUNET_FS_STATUS_SEARCH_*" events.
*/
- struct {
+ struct
+ {
/**
* Context for controlling the search, NULL for
/**
* Client parent-context pointer; NULL for top-level searches,
- * non-NULL for automatically triggered searches for updates in
- * namespaces.
+ * refers to the client context of the associated search result
+ * for automatically triggered searches for updates in
+ * namespaces. In this case, 'presult' refers to that search
+ * result.
*/
void *pctx;
/**
* Additional values for specific events.
*/
- union {
-
- /**
+ union
+ {
+
+ /**
* These values are only valid for
* GNUNET_FS_STATUS_SEARCH_RESULT events.
*/
- struct {
-
- /**
+ struct
+ {
+
+ /**
* Metadata for the search result.
*/
- const struct GNUNET_CONTAINER_MetaData *meta;
+ const struct GNUNET_CONTAINER_MetaData *meta;
- /**
+ /**
* URI for the search result.
*/
- const struct GNUNET_FS_Uri *uri;
+ const struct GNUNET_FS_Uri *uri;
+
+ /**
+ * Handle to the result (for starting downloads).
+ */
+ struct GNUNET_FS_SearchResult *result;
- } result;
-
- /**
+ /**
+ * Applicability rank (the larger, the better the result
+ * fits the search criteria).
+ */
+ uint32_t applicability_rank;
+
+ } result;
+
+ /**
* These values are only valid for
* GNUNET_FS_STATUS_SEARCH_RESUME_RESULT events.
*/
- struct {
-
- /**
+ struct
+ {
+
+ /**
* Metadata for the search result.
*/
- const struct GNUNET_CONTAINER_MetaData *meta;
+ const struct GNUNET_CONTAINER_MetaData *meta;
- /**
+ /**
* URI for the search result.
*/
- const struct GNUNET_FS_Uri *uri;
+ const struct GNUNET_FS_Uri *uri;
- /**
+ /**
+ * Handle to the result (for starting downloads).
+ */
+ struct GNUNET_FS_SearchResult *result;
+
+ /**
* Current availability rank (negative:
* unavailable, positive: available)
*/
- int32_t availability_rank;
-
- /**
+ int32_t availability_rank;
+
+ /**
* On how many total queries is the given
* availability_rank based?
*/
- uint32_t availabiliy_certainty;
+ uint32_t availability_certainty;
- /**
+ /**
* Updated applicability rank (the larger,
* the better the result fits the search
* criteria).
*/
- uint32_t applicabiliy_rank;
-
- } resume_result;
-
- /**
+ uint32_t applicability_rank;
+
+ } resume_result;
+
+ /**
* These values are only valid for
* GNUNET_FS_STATUS_SEARCH_UPDATE events.
*/
- struct {
+ struct
+ {
- /**
+ /**
* Private context set for for this result
* during the "RESULT" event.
*/
- void *cctx;
-
- /**
+ void *cctx;
+
+ /**
* Metadata for the search result.
*/
- const struct GNUNET_CONTAINER_MetaData *meta;
+ const struct GNUNET_CONTAINER_MetaData *meta;
- /**
+ /**
* URI for the search result.
*/
- const struct GNUNET_FS_Uri *uri;
+ const struct GNUNET_FS_Uri *uri;
- /**
+ /**
* Current availability rank (negative:
* unavailable, positive: available)
*/
- int32_t availability_rank;
-
- /**
+ int32_t availability_rank;
+
+ /**
* On how many total queries is the given
* availability_rank based?
*/
- uint32_t availability_certainty;
+ uint32_t availability_certainty;
- /**
+ /**
* Updated applicability rank (the larger,
* the better the result fits the search
* criteria).
*/
- uint32_t applicability_rank;
+ uint32_t applicability_rank;
+
+ } update;
- } update;
-
- /**
+ /**
* These values are only valid for
* GNUNET_FS_STATUS_SEARCH_RESULT_SUSPEND events.
* These events are automatically triggered for
* happens primarily to give the client a chance
* to clean up the "cctx" (if needed).
*/
- struct {
+ struct
+ {
- /**
+ /**
* Private context set for for this result
* during the "RESULT" event.
*/
- void *cctx;
-
- /**
+ void *cctx;
+
+ /**
* Metadata for the search result.
*/
- const struct GNUNET_CONTAINER_MetaData *meta;
+ const struct GNUNET_CONTAINER_MetaData *meta;
- /**
+ /**
* URI for the search result.
*/
- const struct GNUNET_FS_Uri *uri;
+ const struct GNUNET_FS_Uri *uri;
+
+ } result_suspend;
- } result_suspend;
-
- /**
+ /**
* These values are only valid for
* GNUNET_FS_STATUS_SEARCH_RESULT_STOPPED events.
* These events are automatically triggered for
* happens primarily to give the client a chance
* to clean up the "cctx" (if needed).
*/
- struct {
+ struct
+ {
- /**
+ /**
* Private context set for for this result
* during the "RESULT" event.
*/
- void *cctx;
-
- /**
+ void *cctx;
+
+ /**
* Metadata for the search result.
*/
- const struct GNUNET_CONTAINER_MetaData *meta;
+ const struct GNUNET_CONTAINER_MetaData *meta;
- /**
+ /**
* URI for the search result.
*/
- const struct GNUNET_FS_Uri *uri;
+ const struct GNUNET_FS_Uri *uri;
- } result_stopped;
+ } result_stopped;
- /**
+ /**
* These values are only valid for
* GNUNET_FS_STATUS_SEARCH_RESUME events.
*/
- struct {
+ struct
+ {
- /**
+ /**
* Error message, NULL if we have not encountered any error yet.
*/
- const char *message;
+ const char *message;
- /**
+ /**
* Is this search currently paused?
*/
- int is_paused;
+ int is_paused;
- } resume;
+ } resume;
- /**
+ /**
* These values are only valid for
* GNUNET_FS_STATUS_SEARCH_ERROR events.
*/
- struct {
+ struct
+ {
- /**
+ /**
* Error message.
*/
- const char *message;
+ const char *message;
+
+ } error;
- } error;
-
- /**
+ /**
* Values for all "GNUNET_FS_STATUS_SEARCH_RESULT_NAMESPACE" events.
*/
- struct {
-
- /**
+ struct
+ {
+
+ /**
* Handle to the namespace (NULL if it is not a local
* namespace).
*/
- struct GNUNET_FS_Namespace *ns;
-
- /**
+ struct GNUNET_FS_Namespace *ns;
+
+ /**
* Short, human-readable name of the namespace.
*/
- const char *name;
-
- /**
+ const char *name;
+
+ /**
* Root identifier for the namespace, can be NULL.
*/
- const char *root;
-
- /**
+ const char *root;
+
+ /**
* Metadata for the namespace.
*/
- const struct GNUNET_CONTAINER_MetaData *meta;
-
- /**
+ const struct GNUNET_CONTAINER_MetaData *meta;
+
+ /**
* Hash-identifier for the namespace.
*/
- GNUNET_HashCode id;
-
- } namespace;
+ GNUNET_HashCode id;
+
+ } namespace;
} specifics;
/**
* Values for all "GNUNET_FS_STATUS_UNINDEX_*" events.
*/
- struct {
+ struct
+ {
/**
* Context for controlling the unindexing.
* At what time do we expect to finish unindexing?
* (will be a value in the past for completed
* unindexing opeations).
- */
+ */
struct GNUNET_TIME_Relative eta;
/**
/**
* Additional values for specific events.
*/
- union {
+ union
+ {
- /**
+ /**
* These values are only valid for
* GNUNET_FS_STATUS_UNINDEX_PROGRESS events.
*/
- struct {
-
- /**
+ struct
+ {
+
+ /**
* Data block we just unindexed.
*/
- const void *data;
-
- /**
+ const void *data;
+
+ /**
* At what offset in the file is "data"?
*/
- uint64_t offset;
-
- /**
+ uint64_t offset;
+
+ /**
* Length of the data block.
*/
- uint64_t data_len;
+ uint64_t data_len;
- /**
+ /**
* Depth of the given block in the tree;
- * 0 would be the highest level (the first
- * call is guaranteed to be for the lowest
- * level).
+ * 0 would be the lowest level (DBLOCKS).
*/
- unsigned int depth;
+ unsigned int depth;
- } progress;
+ } progress;
- /**
+ /**
* These values are only valid for
* GNUNET_FS_STATUS_UNINDEX_RESUME events.
*/
- struct {
+ struct
+ {
- /**
+ /**
* Error message, NULL if we have not encountered any error yet.
*/
- const char *message;
+ const char *message;
- } resume;
+ } resume;
- /**
+ /**
* These values are only valid for
* GNUNET_FS_STATUS_UNINDEX_ERROR events.
*/
- struct {
+ struct
+ {
- /**
+ /**
* Error message.
*/
- const char *message;
+ const char *message;
- } error;
+ } error;
} specifics;
/**
* Specific status code (determines the event type).
- */
+ */
enum GNUNET_FS_Status status;
};
* will be passed to future callbacks in the respective
* field in the GNUNET_FS_ProgressInfo struct.
*/
-typedef void* (*GNUNET_FS_ProgressCallback)
- (void *cls,
- const struct GNUNET_FS_ProgressInfo *info);
+typedef void *(*GNUNET_FS_ProgressCallback) (void *cls,
+ const struct GNUNET_FS_ProgressInfo
+ * info);
/**
* General (global) option flags for file-sharing.
*/
enum GNUNET_FS_Flags
- {
+{
/**
* No special flags set.
*/
- GNUNET_FS_FLAGS_NONE = 0,
+ GNUNET_FS_FLAGS_NONE = 0,
/**
* Is persistence of operations desired?
* (will create SUSPEND/RESUME events).
*/
- GNUNET_FS_FLAGS_PERSISTENCE = 1
+ GNUNET_FS_FLAGS_PERSISTENCE = 1,
- };
+ /**
+ * Should we automatically trigger probes for search results
+ * to determine availability?
+ * (will create GNUNET_FS_STATUS_SEARCH_UPDATE events).
+ */
+ GNUNET_FS_FLAGS_DO_PROBES = 2
+};
/**
- * Options specified in the VARARGs
- * portion of GNUNET_FS_start.
+ * Options specified in the VARARGs portion of GNUNET_FS_start.
*/
enum GNUNET_FS_OPTIONS
- {
-
+{
+
/**
* Last option in the VARARG list.
*/
- GNUNET_FS_OPTIONS_END = 0,
+ GNUNET_FS_OPTIONS_END = 0,
/**
* Select the desired amount of parallelism (this option should be
* followed by an "unsigned int" giving the desired maximum number
* of parallel downloads).
*/
- GNUNET_FS_OPTIONS_DOWNLOAD_PARALLELISM = 1
+ GNUNET_FS_OPTIONS_DOWNLOAD_PARALLELISM = 1,
+
+ /**
+ * Maximum number of requests that should be pending at a given
+ * point in time (invidivual downloads may go above this, but
+ * if we are above this threshold, we should not activate any
+ * additional downloads.
+ */
+ GNUNET_FS_OPTIONS_REQUEST_PARALLELISM = 2
+};
+
+
+/**
+ * Settings for publishing a block (which may of course also
+ * apply to an entire directory or file).
+ */
+struct GNUNET_FS_BlockOptions
+{
+
+ /**
+ * At what time should the block expire? Data blocks (DBLOCKS and
+ * IBLOCKS) may still be used even if they are expired (however,
+ * they'd be removed quickly from the datastore if we are short on
+ * space), all other types of blocks will no longer be returned
+ * after they expire.
+ */
+ struct GNUNET_TIME_Absolute expiration_time;
- };
+ /**
+ * At which anonymity level should the block be shared?
+ * (0: no anonymity, 1: normal GAP, >1: with cover traffic).
+ */
+ uint32_t anonymity_level;
+
+ /**
+ * How important is it for us to store the block? If we run
+ * out of space, the highest-priority, non-expired blocks will
+ * be kept.
+ */
+ uint32_t content_priority;
+
+ /**
+ * How often should we try to migrate the block to other peers?
+ * Only used if "CONTENT_PUSHING" is set to YES, in which case we
+ * first push each block to other peers according to their
+ * replication levels. Once each block has been pushed that many
+ * times to other peers, blocks are chosen for migration at random.
+ * Naturally, there is no guarantee that the other peers will keep
+ * these blocks for any period of time (since they won't have any
+ * priority or might be too busy to even store the block in the
+ * first place).
+ */
+ uint32_t replication_level;
+
+};
+
+
+/**
+ * Return the current year (i.e. '2011').
+ */
+unsigned int
+GNUNET_FS_get_current_year (void);
+
+
+/**
+ * Convert a year to an expiration time of January 1st of that year.
+ *
+ * @param year a year (after 1970, please ;-)).
+ * @return absolute time for January 1st of that year.
+ */
+struct GNUNET_TIME_Absolute
+GNUNET_FS_year_to_time (unsigned int year);
/**
/**
* Setup a connection to the file-sharing service.
*
- * @param sched scheduler to use
* @param cfg configuration to use
* @param client_name unique identifier for this client
* @param upcb function to call to notify about FS actions
* @return NULL on error
*/
struct GNUNET_FS_Handle *
-GNUNET_FS_start (struct GNUNET_SCHEDULER_Handle *sched,
- const struct GNUNET_CONFIGURATION_Handle *cfg,
- const char *client_name,
- GNUNET_FS_ProgressCallback upcb,
- void *upcb_cls,
- enum GNUNET_FS_Flags flags,
- ...);
+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, ...);
/**
* called after this function returns.
*
* @param h handle that was returned from GNUNET_FS_start
- */
-void
-GNUNET_FS_stop (struct GNUNET_FS_Handle *h);
+ */
+void
+GNUNET_FS_stop (struct GNUNET_FS_Handle *h);
+
+
+/**
+ * Extract meta-data from a file.
+ *
+ * @param md metadata to set
+ * @param filename name of file to inspect
+ * @param extractors plugins to use
+ * @return GNUNET_SYSERR on error, otherwise the number
+ * of meta-data items obtained
+ */
+int
+GNUNET_FS_meta_data_extract_from_file (struct GNUNET_CONTAINER_MetaData *md,
+ const char *filename,
+ struct EXTRACTOR_PluginList *extractors);
/**
* @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 anonymity pointer to selected anonymity level (can be modified)
- * @param priority pointer to selected priority (can be modified)
- * @param expirationTime pointer to selected expiration time (can be modified)
+ * @param bo block options (can be modified)
+ * @param do_index should we index (can be modified)
* @param client_info pointer to client context set upon creation (can be modified)
* @return GNUNET_OK to continue, GNUNET_NO to remove
* this entry from the directory, GNUNET_SYSERR
* to abort the iteration
*/
-typedef int (*GNUNET_FS_FileInformationProcessor)(void *cls,
- struct GNUNET_FS_FileInformation *fi,
- uint64_t length,
- struct GNUNET_CONTAINER_MetaData *meta,
- struct GNUNET_FS_Uri **uri,
- uint32_t *anonymity,
- uint32_t *priority,
- struct GNUNET_TIME_Absolute *expirationTime,
- void **client_info);
-
-
-/**
- * Recover file information structure from disk.
- *
- * @param fn filename for the structure on disk
- * @return NULL on error
- */
-struct GNUNET_FS_FileInformation *
-GNUNET_FS_file_information_recover (const char *fn);
+typedef int (*GNUNET_FS_FileInformationProcessor) (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);
/**
GNUNET_FS_file_information_get_id (struct GNUNET_FS_FileInformation *s);
-/**
- * Synchronize this file-information struct with its mirror
- * on disk. Note that all internal FS-operations that change
- * file information data should already call "sync" internally,
- * so this function is likely not useful for clients.
- *
- * @param fi the struct to sync
- */
-void
-GNUNET_FS_file_information_sync (struct GNUNET_FS_FileInformation *f);
-
/**
* Create an entry for a file in a publish-structure.
*
+ * @param h handle to the file sharing subsystem
+ * @param client_info initial client-info value for this entry
* @param filename name of the file or directory to publish
* @param keywords under which keywords should this file be available
* directly; can be NULL
* @param meta metadata for the file
* @param do_index GNUNET_YES for index, GNUNET_NO for insertion,
* GNUNET_SYSERR for simulation
- * @param anonymity what is the desired anonymity level for sharing?
- * @param priority what is the priority for OUR node to
- * keep this file available? Use 0 for maximum anonymity and
- * minimum reliability...
- * @param expirationTime when should this content expire?
+ * @param bo block options
* @return publish structure entry for the file
*/
struct GNUNET_FS_FileInformation *
-GNUNET_FS_file_information_create_from_file (void *client_info,
- const char *filename,
- const struct GNUNET_FS_Uri *keywords,
- const struct GNUNET_CONTAINER_MetaData *meta,
- int do_index,
- uint32_t anonymity,
- uint32_t priority,
- struct GNUNET_TIME_Absolute expirationTime);
+GNUNET_FS_file_information_create_from_file (struct GNUNET_FS_Handle *h,
+ void *client_info,
+ const char *filename,
+ const struct GNUNET_FS_Uri
+ *keywords,
+ const struct
+ GNUNET_CONTAINER_MetaData *meta,
+ int do_index,
+ const struct GNUNET_FS_BlockOptions
+ *bo);
/**
* Create an entry for a file in a publish-structure.
*
+ * @param h handle to the file sharing subsystem
+ * @param client_info initial client-info value for this entry
* @param length length of the file
* @param data data for the file (should not be used afterwards by
- * the caller; caller will "free")
+ * the caller; callee will "free")
* @param keywords under which keywords should this file be available
* directly; can be NULL
* @param meta metadata for the file
* @param do_index GNUNET_YES for index, GNUNET_NO for insertion,
* GNUNET_SYSERR for simulation
- * @param anonymity what is the desired anonymity level for sharing?
- * @param priority what is the priority for OUR node to
- * keep this file available? Use 0 for maximum anonymity and
- * minimum reliability...
- * @param expirationTime when should this content expire?
+ * @param bo block options
* @return publish structure entry for the file
*/
struct GNUNET_FS_FileInformation *
-GNUNET_FS_file_information_create_from_data (void *client_info,
- uint64_t length,
- void *data,
- const struct GNUNET_FS_Uri *keywords,
- const struct GNUNET_CONTAINER_MetaData *meta,
- int do_index,
- uint32_t anonymity,
- uint32_t priority,
- struct GNUNET_TIME_Absolute expirationTime);
+GNUNET_FS_file_information_create_from_data (struct GNUNET_FS_Handle *h,
+ void *client_info, uint64_t length,
+ void *data,
+ const struct GNUNET_FS_Uri
+ *keywords,
+ const struct
+ GNUNET_CONTAINER_MetaData *meta,
+ int do_index,
+ const struct GNUNET_FS_BlockOptions
+ *bo);
/**
* @param emsg location for the reader to store an error message
* @return number of bytes written, usually "max", 0 on error
*/
-typedef size_t (*GNUNET_FS_DataReader)(void *cls,
- uint64_t offset,
- size_t max,
- void *buf,
- char **emsg);
+typedef size_t (*GNUNET_FS_DataReader) (void *cls, uint64_t offset, size_t max,
+ void *buf, char **emsg);
/**
* Create an entry for a file in a publish-structure.
*
+ * @param h handle to the file sharing subsystem
+ * @param client_info initial client-info value for this entry
* @param length length of the file
* @param reader function that can be used to obtain the data for the file
* @param reader_cls closure for "reader"
* @param meta metadata for the file
* @param do_index GNUNET_YES for index, GNUNET_NO for insertion,
* GNUNET_SYSERR for simulation
- * @param anonymity what is the desired anonymity level for sharing?
- * @param priority what is the priority for OUR node to
- * keep this file available? Use 0 for maximum anonymity and
- * minimum reliability...
- * @param expirationTime when should this content expire?
+ * @param bo block options
* @return publish structure entry for the file
*/
struct GNUNET_FS_FileInformation *
-GNUNET_FS_file_information_create_from_reader (void *client_info,
- uint64_t length,
- GNUNET_FS_DataReader reader,
- void *reader_cls,
- const struct GNUNET_FS_Uri *keywords,
- const struct GNUNET_CONTAINER_MetaData *meta,
- int do_index,
- uint32_t anonymity,
- uint32_t priority,
- struct GNUNET_TIME_Absolute expirationTime);
+GNUNET_FS_file_information_create_from_reader (struct GNUNET_FS_Handle *h,
+ void *client_info,
+ uint64_t length,
+ GNUNET_FS_DataReader reader,
+ void *reader_cls,
+ const struct GNUNET_FS_Uri
+ *keywords,
+ const struct
+ GNUNET_CONTAINER_MetaData *meta,
+ int do_index,
+ const struct
+ GNUNET_FS_BlockOptions *bo);
/**
* @param fi information about the file (should not be
* used henceforth by the caller)
*/
-typedef void (*GNUNET_FS_FileProcessor)(void *cls,
- const char *filename,
- struct GNUNET_FS_FileInformation *fi);
+typedef void (*GNUNET_FS_FileProcessor) (void *cls, const char *filename,
+ struct GNUNET_FS_FileInformation * fi);
/**
* Type of a function that will be used to scan a directory.
*
* @param cls closure
+ * @param h handle to the file sharing subsystem
* @param dirname name of the directory to scan
* @param do_index should files be indexed or inserted
- * @param anonymity desired anonymity level
- * @param priority priority for publishing
- * @param expirationTime expiration for publication
+ * @param bo block options
* @param proc function to call on each entry
* @param proc_cls closure for proc
* @param emsg where to store an error message (on errors)
* @return GNUNET_OK on success
*/
-typedef int (*GNUNET_FS_DirectoryScanner)(void *cls,
- const char *dirname,
- int do_index,
- uint32_t anonymity,
- uint32_t priority,
- struct GNUNET_TIME_Absolute expirationTime,
- GNUNET_FS_FileProcessor proc,
- void *proc_cls,
- char **emsg);
+typedef int (*GNUNET_FS_DirectoryScanner) (void *cls,
+ struct GNUNET_FS_Handle * h,
+ const char *dirname, int do_index,
+ const struct GNUNET_FS_BlockOptions *
+ bo, GNUNET_FS_FileProcessor proc,
+ void *proc_cls, char **emsg);
* convenience function.
*
* @param cls must be of type "struct EXTRACTOR_Extractor*"
+ * @param h handle to the file sharing subsystem
* @param dirname name of the directory to scan
* @param do_index should files be indexed or inserted
- * @param anonymity desired anonymity level
- * @param priority priority for publishing
- * @param expirationTime expiration for publication
+ * @param bo block options
* @param proc function called on each entry
* @param proc_cls closure for proc
* @param emsg where to store an error message (on errors)
* @return GNUNET_OK on success
*/
int
-GNUNET_FS_directory_scanner_default (void *cls,
- const char *dirname,
- int do_index,
- uint32_t anonymity,
- uint32_t priority,
- struct GNUNET_TIME_Absolute expirationTime,
- GNUNET_FS_FileProcessor proc,
- void *proc_cls,
- char **emsg);
+GNUNET_FS_directory_scanner_default (void *cls, struct GNUNET_FS_Handle *h,
+ const char *dirname, int do_index,
+ const struct GNUNET_FS_BlockOptions *bo,
+ GNUNET_FS_FileProcessor proc,
+ void *proc_cls, char **emsg);
/**
* passed (GNUNET_FS_directory_scanner_default). This is strictly a
* convenience function.
*
+ * @param h handle to the file sharing subsystem
+ * @param client_info initial client-info value for this entry
* @param filename name of the top-level file or directory
* @param scanner function used to get a list of files in a directory
* @param scanner_cls closure for scanner
* @param do_index should files in the hierarchy be indexed?
- * @param anonymity what is the desired anonymity level for sharing?
- * @param priority what is the priority for OUR node to
- * keep this file available? Use 0 for maximum anonymity and
- * minimum reliability...
- * @param expirationTime when should this content expire?
+ * @param bo block options
* @param emsg where to store an error message
* @return publish structure entry for the directory, NULL on error
*/
struct GNUNET_FS_FileInformation *
-GNUNET_FS_file_information_create_from_directory (void *client_info,
- const char *filename,
- GNUNET_FS_DirectoryScanner scanner,
- void *scanner_cls,
- int do_index,
- uint32_t anonymity,
- uint32_t priority,
- struct GNUNET_TIME_Absolute expirationTime,
- char **emsg);
+GNUNET_FS_file_information_create_from_directory (struct GNUNET_FS_Handle *h,
+ void *client_info,
+ const char *filename,
+ GNUNET_FS_DirectoryScanner
+ scanner, void *scanner_cls,
+ int do_index,
+ const struct
+ GNUNET_FS_BlockOptions *bo,
+ char **emsg);
/**
* use of "GNUNET_FS_file_information_create_from_directory"
* is not appropriate.
*
- * @param meta metadata for the directory
+ * @param h handle to the file sharing subsystem
+ * @param client_info initial client-info value for this entry
* @param keywords under which keywords should this directory be available
* directly; can be NULL
- * @param anonymity what is the desired anonymity level for sharing?
- * @param priority what is the priority for OUR node to
- * keep this file available? Use 0 for maximum anonymity and
- * minimum reliability...
- * @param expirationTime when should this content expire?
+ * @param meta metadata for the directory
+ * @param bo block options
* @return publish structure entry for the directory , NULL on error
*/
struct GNUNET_FS_FileInformation *
-GNUNET_FS_file_information_create_empty_directory (void *client_info,
- const struct GNUNET_CONTAINER_MetaData *meta,
- const struct GNUNET_FS_Uri *keywords,
- uint32_t anonymity,
- uint32_t priority,
- struct GNUNET_TIME_Absolute expirationTime);
+GNUNET_FS_file_information_create_empty_directory (struct GNUNET_FS_Handle *h,
+ void *client_info,
+ const struct GNUNET_FS_Uri
+ *keywords,
+ const struct
+ GNUNET_CONTAINER_MetaData
+ *meta,
+ const struct
+ GNUNET_FS_BlockOptions *bo);
+
+
+/**
+ * Test if a given entry represents a directory.
+ *
+ * @param ent check if this FI represents a directory
+ * @return GNUNET_YES if so, GNUNET_NO if not
+ */
+int
+GNUNET_FS_file_information_is_directory (const struct GNUNET_FS_FileInformation
+ *ent);
/**
*/
int
GNUNET_FS_file_information_add (struct GNUNET_FS_FileInformation *dir,
- struct GNUNET_FS_FileInformation *ent);
+ struct GNUNET_FS_FileInformation *ent);
/**
*/
void
GNUNET_FS_file_information_inspect (struct GNUNET_FS_FileInformation *dir,
- GNUNET_FS_FileInformationProcessor proc,
- void *proc_cls);
+ GNUNET_FS_FileInformationProcessor proc,
+ void *proc_cls);
/**
*/
void
GNUNET_FS_file_information_destroy (struct GNUNET_FS_FileInformation *fi,
- GNUNET_FS_FileInformationProcessor cleaner,
- void *cleaner_cls);
+ GNUNET_FS_FileInformationProcessor cleaner,
+ void *cleaner_cls);
/**
* Options for publishing. Compatible options
* can be OR'ed together.
*/
-enum GNUNET_FS_PublishOptions
- {
+enum GNUNET_FS_PublishOptions
+{
/**
* No options (use defaults for everything).
*/
- GNUNET_FS_PUBLISH_OPTION_NONE = 0,
-
+ GNUNET_FS_PUBLISH_OPTION_NONE = 0,
+
/**
* Simulate publishing. With this option, no data will be stored
* in the datastore. Useful for computing URIs from files.
*/
- GNUNET_FS_PUBLISH_OPTION_SIMULATE_ONLY = 1
- };
+ GNUNET_FS_PUBLISH_OPTION_SIMULATE_ONLY = 1
+};
/**
* Publish a file or directory.
*
* @param h handle to the file sharing subsystem
- * @param ctx initial value to use for the '*ctx'
- * in the callback (for the GNUNET_FS_STATUS_PUBLISH_START event).
* @param fi information about the file or directory structure to publish
* @param namespace namespace to publish the file in, NULL for no namespace
* @param nid identifier to use for the publishd content in the namespace
*/
struct GNUNET_FS_PublishContext *
GNUNET_FS_publish_start (struct GNUNET_FS_Handle *h,
- void *ctx,
- struct GNUNET_FS_FileInformation *fi,
- struct GNUNET_FS_Namespace *namespace,
- const char *nid,
- const char *nuid,
- enum GNUNET_FS_PublishOptions options);
+ struct GNUNET_FS_FileInformation *fi,
+ struct GNUNET_FS_Namespace *namespace, const char *nid,
+ const char *nuid,
+ enum GNUNET_FS_PublishOptions options);
/**
- * Stop an upload. Will abort incomplete uploads (but
- * not remove blocks that have already been publishd) or
- * simply clean up the state for completed uploads.
+ * Stop a publication. Will abort incomplete publications (but
+ * not remove blocks that have already been published) or
+ * simply clean up the state for completed publications.
+ * Must NOT be called from within the event callback!
*
- * @param sc context for the upload to stop
+ * @param pc context for the publication to stop
*/
-void
-GNUNET_FS_publish_stop (struct GNUNET_FS_PublishContext *sc);
+void
+GNUNET_FS_publish_stop (struct GNUNET_FS_PublishContext *pc);
/**
* @param uri URI under which the block is now available, NULL on error
* @param emsg error message, NULL on success
*/
-typedef void (*GNUNET_FS_PublishContinuation)(void *cls,
- const struct GNUNET_FS_Uri *uri,
- const char *emsg);
-
+typedef void (*GNUNET_FS_PublishContinuation) (void *cls,
+ const struct GNUNET_FS_Uri * uri,
+ const char *emsg);
+
/**
* Publish a KBlock on GNUnet.
* @param ksk_uri keywords to use
* @param meta metadata to use
* @param uri URI to refer to in the KBlock
- * @param expirationTime when the KBlock expires
- * @param anonymity anonymity level for the KBlock
- * @param priority priority for the KBlock
+ * @param bo block options
+ * @param options publication options
* @param cont continuation
* @param cont_cls closure for cont
*/
void
GNUNET_FS_publish_ksk (struct GNUNET_FS_Handle *h,
- struct GNUNET_FS_Uri *ksk_uri,
- struct GNUNET_CONTAINER_MetaData *meta,
- struct GNUNET_FS_Uri *uri,
- struct GNUNET_TIME_Absolute expirationTime,
- uint32_t anonymity,
- uint32_t priority,
- enum GNUNET_FS_PublishOptions options,
- GNUNET_FS_PublishContinuation cont,
- void *cont_cls);
+ const struct GNUNET_FS_Uri *ksk_uri,
+ const struct GNUNET_CONTAINER_MetaData *meta,
+ const struct GNUNET_FS_Uri *uri,
+ const struct GNUNET_FS_BlockOptions *bo,
+ enum GNUNET_FS_PublishOptions options,
+ GNUNET_FS_PublishContinuation cont, void *cont_cls);
/**
* @param update update identifier to use
* @param meta metadata to use
* @param uri URI to refer to in the SBlock
- * @param expirationTime when the SBlock expires
- * @param anonymity anonymity level for the SBlock
- * @param priority priority for the SBlock
+ * @param bo block options
+ * @param options publication options
* @param cont continuation
* @param cont_cls closure for cont
*/
void
GNUNET_FS_publish_sks (struct GNUNET_FS_Handle *h,
- struct GNUNET_FS_Namespace *namespace,
- const char *identifier,
- const char *update,
- struct GNUNET_CONTAINER_MetaData *meta,
- struct GNUNET_FS_Uri *uri,
- struct GNUNET_TIME_Absolute expirationTime,
- uint32_t anonymity,
- uint32_t priority,
- enum GNUNET_FS_PublishOptions options,
- GNUNET_FS_PublishContinuation cont,
- void *cont_cls);
+ struct GNUNET_FS_Namespace *namespace,
+ const char *identifier, const char *update,
+ const struct GNUNET_CONTAINER_MetaData *meta,
+ const struct GNUNET_FS_Uri *uri,
+ const struct GNUNET_FS_BlockOptions *bo,
+ enum GNUNET_FS_PublishOptions options,
+ GNUNET_FS_PublishContinuation cont, void *cont_cls);
/**
* @param file_id hash of the contents of the indexed file
* @return GNUNET_OK to continue iteration, GNUNET_SYSERR to abort
*/
-typedef int (*GNUNET_FS_IndexedFileProcessor) (void *cls,
- const char *filename,
- const GNUNET_HashCode *file_id);
+typedef int (*GNUNET_FS_IndexedFileProcessor) (void *cls, const char *filename,
+ const GNUNET_HashCode * file_id);
/**
* error) or "PREREQ_DONE" (on success)
* @param cont_cls closure for cont
*/
-void
+void
GNUNET_FS_get_indexed_files (struct GNUNET_FS_Handle *h,
- GNUNET_FS_IndexedFileProcessor iterator,
- void *iterator_cls,
- GNUNET_SCHEDULER_Task cont,
- void *cont_cls);
+ GNUNET_FS_IndexedFileProcessor iterator,
+ void *iterator_cls, GNUNET_SCHEDULER_Task cont,
+ void *cont_cls);
/**
*
* @param h handle to the file sharing subsystem
* @param filename file to unindex
+ * @param cctx initial value for the client context
* @return NULL on error, otherwise handle
*/
struct GNUNET_FS_UnindexContext *
-GNUNET_FS_unindex (struct GNUNET_FS_Handle *h,
- const char *filename);
+GNUNET_FS_unindex_start (struct GNUNET_FS_Handle *h, const char *filename,
+ void *cctx);
/**
* Publish an advertismement for a namespace.
*
* @param h handle to the file sharing subsystem
+ * @param ksk_uri keywords to use for advertisment
* @param namespace handle for the namespace that should be advertised
* @param meta meta-data for the namespace advertisement
- * @param anonymity for the namespace advertismement
- * @param priority for the namespace advertisement
- * @param expiration for the namespace advertisement
- * @param advertisementURI the keyword (!) URI to advertise the
- * namespace under (we will create a GNUNET_EC_KNBlock)
- * @param rootEntry name of the root entry in the namespace (for
- * the namespace advertisement)
- *
- * @return uri of the advertisement
+ * @param bo block options
+ * @param rootEntry name of the root of the namespace
+ * @param cont continuation
+ * @param cont_cls closure for cont
*/
-struct GNUNET_FS_Uri *
+void
GNUNET_FS_namespace_advertise (struct GNUNET_FS_Handle *h,
- struct GNUNET_FS_Namespace *namespace,
- const struct GNUNET_CONTAINER_MetaData *meta,
- uint32_t anonymity,
- uint32_t priority,
- struct GNUNET_TIME_Absolute expiration,
- const struct GNUNET_FS_Uri *advertisementURI,
- const char *rootEntry);
+ struct GNUNET_FS_Uri *ksk_uri,
+ struct GNUNET_FS_Namespace *namespace,
+ const struct GNUNET_CONTAINER_MetaData *meta,
+ const struct GNUNET_FS_BlockOptions *bo,
+ const char *rootEntry,
+ GNUNET_FS_PublishContinuation cont,
+ void *cont_cls);
/**
* @return handle to the namespace, NULL on error
*/
struct GNUNET_FS_Namespace *
-GNUNET_FS_namespace_create (struct GNUNET_FS_Handle *h,
- const char *name);
+GNUNET_FS_namespace_create (struct GNUNET_FS_Handle *h, const char *name);
/**
*
* @return GNUNET_OK on success, GNUNET_SYSERR on error
*/
-int
-GNUNET_FS_namespace_delete (struct GNUNET_FS_Namespace *namespace,
- int freeze);
+int
+GNUNET_FS_namespace_delete (struct GNUNET_FS_Namespace *namespace, int freeze);
/**
* @param name human-readable identifier of the namespace
* @param id hash identifier for the namespace
*/
-typedef void (*GNUNET_FS_NamespaceInfoProcessor) (void *cls,
- const char *name,
- const GNUNET_HashCode *id);
+typedef void (*GNUNET_FS_NamespaceInfoProcessor) (void *cls, const char *name,
+ const GNUNET_HashCode * id);
/**
* @param cb function to call on each known namespace
* @param cb_cls closure for cb
*/
-void
+void
GNUNET_FS_namespace_list (struct GNUNET_FS_Handle *h,
- GNUNET_FS_NamespaceInfoProcessor cb,
- void *cb_cls);
+ GNUNET_FS_NamespaceInfoProcessor cb, void *cb_cls);
/**
* @param last_meta metadata associated with last_uri
* @param next_id identifier that should be used for updates
*/
-typedef void
-(*GNUNET_FS_IdentifierProcessor)(void *cls,
- const char *last_id,
- const struct GNUNET_FS_Uri *last_uri,
- const struct GNUNET_CONTAINER_MetaData *last_meta,
- const char *next_id);
+typedef void (*GNUNET_FS_IdentifierProcessor) (void *cls, const char *last_id,
+ const struct GNUNET_FS_Uri *
+ last_uri,
+ const struct
+ GNUNET_CONTAINER_MetaData *
+ last_meta, const char *next_id);
/**
- * List all of the identifiers in the namespace for
- * which we could produce an update.
+ * List all of the identifiers in the namespace for which we could
+ * produce an update. Namespace updates form a graph where each node
+ * has a name. Each node can have any number of URI/meta-data entries
+ * which can each be linked to other nodes. Cycles are possible.
+ *
+ * Calling this function with "next_id" NULL will cause the library to
+ * call "ip" with a root for each strongly connected component of the
+ * graph (a root being a node from which all other nodes in the Scc
+ * are reachable).
+ *
+ * Calling this function with "next_id" being the name of a node will
+ * cause the library to call "ip" with all children of the node. Note
+ * that cycles within an SCC are possible (including self-loops).
*
* @param namespace namespace to inspect for updateable content
+ * @param next_id ID to look for; use NULL to look for SCC roots
* @param ip function to call on each updateable identifier
* @param ip_cls closure for ip
*/
void
GNUNET_FS_namespace_list_updateable (struct GNUNET_FS_Namespace *namespace,
- GNUNET_FS_IdentifierProcessor ip,
- void *ip_cls);
+ const char *next_id,
+ GNUNET_FS_IdentifierProcessor ip,
+ void *ip_cls);
+
+
+/**
+ * Options for searching. Compatible options
+ * can be OR'ed together.
+ */
+enum GNUNET_FS_SearchOptions
+{
+ /**
+ * No options (use defaults for everything).
+ */
+ GNUNET_FS_SEARCH_OPTION_NONE = 0,
+
+ /**
+ * Only search the local host, do not search remote systems (no P2P)
+ */
+ GNUNET_FS_SEARCH_OPTION_LOOPBACK_ONLY = 1
+};
/**
* @param uri specifies the search parameters; can be
* a KSK URI or an SKS URI.
* @param anonymity desired level of anonymity
+ * @param options options for the search
+ * @param cctx initial value for the client context
* @return context that can be used to control the search
*/
struct GNUNET_FS_SearchContext *
GNUNET_FS_search_start (struct GNUNET_FS_Handle *h,
- const struct GNUNET_FS_Uri *uri,
- uint32_t anonymity);
+ const struct GNUNET_FS_Uri *uri, uint32_t anonymity,
+ enum GNUNET_FS_SearchOptions options, void *cctx);
/**
*
* @param sc context for the search that should be paused
*/
-void
+void
GNUNET_FS_search_pause (struct GNUNET_FS_SearchContext *sc);
*
* @param sc context for the search that should be resumed
*/
-void
+void
GNUNET_FS_search_continue (struct GNUNET_FS_SearchContext *sc);
*
* @param sc context for the search that should be stopped
*/
-void
+void
GNUNET_FS_search_stop (struct GNUNET_FS_SearchContext *sc);
* Options for downloading. Compatible options
* can be OR'ed together.
*/
-enum GNUNET_FS_DownloadOptions
- {
+enum GNUNET_FS_DownloadOptions
+{
/**
* No options (use defaults for everything).
*/
- GNUNET_FS_DOWNLOAD_OPTION_NONE = 0,
-
+ GNUNET_FS_DOWNLOAD_OPTION_NONE = 0,
+
+ /**
+ * Only download from the local host, do not access remote systems (no P2P)
+ */
+ GNUNET_FS_DOWNLOAD_OPTION_LOOPBACK_ONLY = 1,
+
/**
* Do a recursive download (that is, automatically trigger the
* download of files in directories).
*/
- GNUNET_FS_DOWNLOAD_OPTION_RECURSIVE = 1,
+ GNUNET_FS_DOWNLOAD_OPTION_RECURSIVE = 2,
/**
* Do not append temporary data to
* the target file (for the IBlocks).
*/
- GNUNET_FS_DOWNLOAD_NO_TEMPORARIES = 2
+ GNUNET_FS_DOWNLOAD_NO_TEMPORARIES = 4,
- };
+ /**
+ * Internal option used to flag this download as a 'probe' for a
+ * search result. Impacts the priority with which the download is
+ * run and causes signalling callbacks to be done differently.
+ * Also, probe downloads are not serialized on suspension. Normal
+ * clients should not use this!
+ */
+ GNUNET_FS_DOWNLOAD_IS_PROBE = (1 << 31)
+};
* @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 download 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_file_download_start (struct GNUNET_FS_Handle *h,
- const struct GNUNET_FS_Uri *uri,
- const struct GNUNET_CONTAINER_MetaData *meta,
- const char *filename,
- uint64_t offset,
- uint64_t length,
- uint32_t anonymity,
- enum GNUNET_FS_DownloadOptions options,
- struct GNUNET_FS_DownloadContext *parent);
-
-
-/**
- * Stop a download (aborts if download is incomplete).
- *
- * @param dc handle for the download
- * @param do_delete delete files of incomplete downloads
- */
-void
-GNUNET_FS_file_download_stop (struct GNUNET_FS_DownloadContext *dc,
- int do_delete);
+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);
/**
- * Initialize collection.
+ * Download parts of a file based on a search result. The download
+ * will be associated with the search result (and the association
+ * will be preserved when serializing/deserializing the state).
+ * If the search is stopped, the download will not be aborted but
+ * be 'promoted' to a stand-alone download.
*
- * @param h handle to the file sharing subsystem
- * @param namespace namespace to use for the collection
- * @return GNUNET_OK on success, GNUNET_SYSERR if another
- * namespace is already set for our collection
- */
-int
-GNUNET_FS_collection_start (struct GNUNET_FS_Handle *h,
- struct GNUNET_FS_Namespace *namespace);
-
-
-/**
- * Stop collection.
- *
- * @param h handle to the file sharing subsystem
- * @return GNUNET_OK on success, GNUNET_SYSERR if no collection is active
- */
-int
-GNUNET_FS_collection_stop (struct GNUNET_FS_Handle *h);
-
-
-/**
- * Are we using a collection?
+ * As with the other download function, 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>
*
- * @param h handle to the file sharing subsystem
- * @return NULL if there is no collection,
- */
-struct GNUNET_FS_Namespace *
-GNUNET_FS_collection_get(struct GNUNET_FS_Handle *h);
-
-
-/**
- * Publish an update of the current collection information to the
- * network now. The function has no effect if the collection has not
- * changed since the last publication. If we are currently not
- * collecting, this function does nothing.
+ * The given range can 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 sr the search result to use for the download (determines uri and
+ * meta data and associations)
+ * @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 download options
+ * @param cctx initial value for the client context for this download
+ * @return context that can be used to control this download
*/
-void GNUNET_FS_collection_publish (struct GNUNET_FS_Handle *h);
+struct GNUNET_FS_DownloadContext *
+GNUNET_FS_download_start_from_search (struct GNUNET_FS_Handle *h,
+ struct GNUNET_FS_SearchResult *sr,
+ const char *filename,
+ const char *tempname, uint64_t offset,
+ uint64_t length, uint32_t anonymity,
+ enum GNUNET_FS_DownloadOptions options,
+ void *cctx);
/**
- * If we are currently building a collection, publish the given file
- * information in that collection. If we are currently not
- * collecting, this function does nothing.
+ * Stop a download (aborts if download is incomplete).
*
- * @param h handle to the file sharing subsystem
- * @param uri uri to add to the collection
- * @param meta metadata for the uri
+ * @param dc handle for the download
+ * @param do_delete delete files of incomplete downloads
*/
-void GNUNET_FS_collection_add (const struct GNUNET_FS_Handle *h,
- const struct GNUNET_FS_Uri *uri,
- const struct GNUNET_CONTAINER_MetaData *meta);
-
-
+void
+GNUNET_FS_download_stop (struct GNUNET_FS_DownloadContext *dc, int do_delete);
* @return GNUNET_YES if it is, GNUNET_NO if it is not, GNUNET_SYSERR if
* we have no mime-type information (treat as 'GNUNET_NO')
*/
-int
-GNUNET_FS_meta_data_test_for_directory (const struct GNUNET_CONTAINER_MetaData *md);
+int
+GNUNET_FS_meta_data_test_for_directory (const struct GNUNET_CONTAINER_MetaData
+ *md);
/**
GNUNET_FS_meta_data_make_directory (struct GNUNET_CONTAINER_MetaData *md);
+/**
+ * Suggest a filename based on given metadata.
+ *
+ * @param md given meta data
+ * @return NULL if meta data is useless for suggesting a filename
+ */
+char *
+GNUNET_FS_meta_data_suggest_filename (const struct GNUNET_CONTAINER_MetaData
+ *md);
+
+
/**
* Function used to process entries in a directory.
*
* embedded with the directory itself).
* @param data data available for the file (length bytes)
*/
-typedef void (*GNUNET_FS_DirectoryEntryProcessor)(void *cls,
- const char *filename,
- const struct GNUNET_FS_Uri *uri,
- const struct GNUNET_CONTAINER_MetaData *meta,
- size_t length,
- const void *data);
+typedef void (*GNUNET_FS_DirectoryEntryProcessor) (void *cls,
+ const char *filename,
+ const struct GNUNET_FS_Uri *
+ uri,
+ const struct
+ GNUNET_CONTAINER_MetaData *
+ meta, size_t length,
+ const void *data);
/**
* @param offset offset of data in the directory
* @param dep function to call on each entry
* @param dep_cls closure for dep
+ * @return GNUNET_OK if this could be a block in a directory,
+ * GNUNET_NO if this could be part of a directory (but not 100% OK)
+ * GNUNET_SYSERR if 'data' does not represent a directory
*/
-void
-GNUNET_FS_directory_list_contents (size_t size,
- const void *data,
- uint64_t offset,
- GNUNET_FS_DirectoryEntryProcessor dep,
- void *dep_cls);
+int
+GNUNET_FS_directory_list_contents (size_t size, const void *data,
+ uint64_t offset,
+ GNUNET_FS_DirectoryEntryProcessor dep,
+ void *dep_cls);
/**
* @param mdir metadata for the directory
*/
struct GNUNET_FS_DirectoryBuilder *
-GNUNET_FS_directory_builder_create (const struct GNUNET_CONTAINER_MetaData *mdir);
+GNUNET_FS_directory_builder_create (const struct GNUNET_CONTAINER_MetaData
+ *mdir);
/**
*/
void
GNUNET_FS_directory_builder_add (struct GNUNET_FS_DirectoryBuilder *bld,
- const struct GNUNET_FS_Uri *uri,
- const struct GNUNET_CONTAINER_MetaData *md,
- const void *data);
-
+ const struct GNUNET_FS_Uri *uri,
+ const struct GNUNET_CONTAINER_MetaData *md,
+ const void *data);
+
/**
* Finish building the directory. Frees the
*/
int
GNUNET_FS_directory_builder_finish (struct GNUNET_FS_DirectoryBuilder *bld,
- size_t *rsize,
- void **rdata);
+ size_t * rsize, void **rdata);
#if 0 /* keep Emacsens' auto-indent happy */
projects / oweals / gnunet.git / blobdiff