#include "gnunet_container_lib.h"
#include "gnunet_disk_lib.h"
#include "gnunet_pseudonym_lib.h"
+#include "gnunet_bio_lib.h"
+
+/**
+ * Name of the directory which stores meta data for pseudonym
+ */
+#define PS_METADATA_DIR DIR_SEPARATOR_STR "data" DIR_SEPARATOR_STR "pseudonyms" DIR_SEPARATOR_STR "metadata" DIR_SEPARATOR_STR
+
+/**
+ * Name of the directory which stores names for pseudonyms
+ */
+#define PS_NAMES_DIR DIR_SEPARATOR_STR "data" DIR_SEPARATOR_STR "pseudonyms" DIR_SEPARATOR_STR "names" DIR_SEPARATOR_STR
-#define PS_METADATA_DIR DIR_SEPARATOR_STR "data" DIR_SEPARATOR_STR "pseudonyms/metadata" DIR_SEPARATOR_STR
-#define PS_NAMES_DIR DIR_SEPARATOR_STR "data" DIR_SEPARATOR_STR "pseudonyms/names" DIR_SEPARATOR_STR
+/**
+ * Registered callbacks for discovery of pseudonyms.
+ */
struct DiscoveryCallback
{
+ /**
+ * This is a linked list.
+ */
struct DiscoveryCallback *next;
+
+ /**
+ * Function to call each time a pseudonym is discovered.
+ */
GNUNET_PSEUDONYM_Iterator callback;
+
+ /**
+ * Closure for callback.
+ */
void *closure;
};
+
+/**
+ * Head of the linked list of functions to call when
+ * new pseudonyms are added.
+ */
static struct DiscoveryCallback *head;
/**
* Internal notification about new tracked URI.
+ * @param id a point to the hash code of pseudonym
+ * @param md meta data to be written
+ * @param rating rating of pseudonym
*/
static void
internal_notify (const GNUNET_HashCode * id,
/**
* Register callback to be invoked whenever we discover
* a new pseudonym.
+ * @param cfg configuration to use
+ * @param iterator iterator over pseudonym
+ * @param closure point to a closure
*/
int
-GNUNET_PSEUDONYM_discovery_callback_register (struct
+GNUNET_PSEUDONYM_discovery_callback_register (const struct
GNUNET_CONFIGURATION_Handle
*cfg,
GNUNET_PSEUDONYM_Iterator
/**
* Unregister pseudonym discovery callback.
+ * @param iterator iterator over pseudonym
+ * @param closure point to a closure
*/
int
GNUNET_PSEUDONYM_discovery_callback_unregister (GNUNET_PSEUDONYM_Iterator
/**
* Get the filename (or directory name) for the given
* pseudonym identifier and directory prefix.
+ * @param cfg configuration to use
+ * @param prefix path components to append to the private directory name
+ * @param psid hash code of pseudonym, can be NULL
+ * @return filename of the pseudonym (if psid != NULL) or directory with the data (if psid == NULL)
*/
static char *
-get_data_filename (struct GNUNET_CONFIGURATION_Handle
+get_data_filename (const struct GNUNET_CONFIGURATION_Handle
*cfg, const char *prefix, const GNUNET_HashCode * psid)
{
struct GNUNET_CRYPTO_HashAsciiEncoded enc;
NULL);
}
+
+/**
+ * Write the pseudonym infomation into a file
+ * @param cfg configuration to use
+ * @param nsid hash code of a pseudonym
+ * @param meta meta data to be written into a file
+ * @param ranking ranking of a pseudonym
+ * @param ns_name name of a pseudonym
+ */
static void
-write_pseudonym_info (struct GNUNET_CONFIGURATION_Handle *cfg,
+write_pseudonym_info (const struct GNUNET_CONFIGURATION_Handle *cfg,
const GNUNET_HashCode * nsid,
const struct GNUNET_CONTAINER_MetaData *meta,
int32_t ranking, const char *ns_name)
{
- unsigned int size;
- unsigned int tag;
- unsigned int off;
- char *buf;
char *fn;
+ struct GNUNET_BIO_WriteHandle *fileW;
fn = get_data_filename (cfg, PS_METADATA_DIR, nsid);
GNUNET_assert (fn != NULL);
- size = GNUNET_CONTAINER_meta_data_get_serialized_size (meta,
- GNUNET_CONTAINER_META_DATA_SERIALIZE_FULL);
- tag = size + sizeof (int) + 1;
- off = 0;
- if (ns_name != NULL)
- {
- off = strlen (ns_name);
- tag += off;
- }
- buf = GNUNET_malloc (tag);
- ((int *) buf)[0] = htonl (ranking); /* ranking */
- if (ns_name != NULL)
- {
- memcpy (&buf[sizeof (int)], ns_name, off + 1);
- }
- else
+ fileW = GNUNET_BIO_write_open(fn);
+ if (NULL != fileW)
{
- buf[sizeof (int)] = '\0';
+ if ( (GNUNET_OK != GNUNET_BIO_write_int32(fileW, ranking)) ||
+ (GNUNET_OK != GNUNET_BIO_write_string(fileW, ns_name)) ||
+ (GNUNET_OK != GNUNET_BIO_write_meta_data(fileW, meta)) )
+ {
+ (void) GNUNET_BIO_write_close(fileW);
+ GNUNET_break (GNUNET_OK == GNUNET_DISK_directory_remove (fn));
+ GNUNET_free (fn);
+ return;
+ }
+ if (GNUNET_OK != GNUNET_BIO_write_close(fileW))
+ {
+ GNUNET_break (GNUNET_OK == GNUNET_DISK_directory_remove (fn));
+ GNUNET_free (fn);
+ return;
+ }
}
- GNUNET_assert
- (size == GNUNET_CONTAINER_meta_data_serialize (meta,
- &buf[sizeof
- (int) +
- off + 1],
- size,
- GNUNET_CONTAINER_META_DATA_SERIALIZE_FULL));
- GNUNET_DISK_fn_write (fn, buf, tag, GNUNET_DISK_PERM_USER_READ
- | GNUNET_DISK_PERM_USER_WRITE | GNUNET_DISK_PERM_GROUP_READ);
GNUNET_free (fn);
- GNUNET_free (buf);
/* create entry for pseudonym name in names */
+ /* FIXME: 90% of what this call does is not needed
+ here => refactor code to only create the entry! */
GNUNET_free_non_null (GNUNET_PSEUDONYM_id_to_name (cfg, nsid));
}
+
+/**
+ * read the pseudonym infomation from a file
+ * @param cfg configuration to use
+ * @param nsid hash code of a pseudonym
+ * @param meta meta data to be read from a file
+ * @param ranking ranking of a pseudonym
+ * @param ns_name name of a pseudonym
+ */
static int
-read_info (struct GNUNET_CONFIGURATION_Handle *cfg,
+read_info (const struct GNUNET_CONFIGURATION_Handle *cfg,
const GNUNET_HashCode * nsid,
struct GNUNET_CONTAINER_MetaData **meta,
int32_t * ranking, char **ns_name)
{
- unsigned long long len;
- unsigned int size;
- unsigned int zend;
- struct stat sbuf;
- char *buf;
char *fn;
+ char *emsg;
+ struct GNUNET_BIO_ReadHandle *fileR;
- if (meta != NULL)
- *meta = NULL;
- if (ns_name != NULL)
- *ns_name = NULL;
fn = get_data_filename (cfg, PS_METADATA_DIR, nsid);
GNUNET_assert (fn != NULL);
-
- if ((0 != STAT (fn, &sbuf))
- || (GNUNET_OK != GNUNET_DISK_file_size (fn, &len, GNUNET_YES)))
- {
- GNUNET_free (fn);
- return GNUNET_SYSERR;
- }
- if (len <= sizeof (int) + 1)
- {
- GNUNET_free (fn);
- return GNUNET_SYSERR;
- }
- if (len > 16 * 1024 * 1024)
+ fileR = GNUNET_BIO_read_open(fn);
+ if (fileR == NULL)
{
- /* too big, must be invalid! remove! */
- GNUNET_break (0);
- if (0 != UNLINK (fn))
- GNUNET_log_strerror_file (GNUNET_ERROR_TYPE_WARNING, "unlink", fn);
GNUNET_free (fn);
return GNUNET_SYSERR;
}
- buf = GNUNET_malloc (len);
- if (len != GNUNET_DISK_fn_read (fn, buf, len))
+ emsg = NULL;
+ if ( (GNUNET_OK != GNUNET_BIO_read_int32 (fileR, ranking)) ||
+ (GNUNET_OK != GNUNET_BIO_read_string(fileR, "Read string error!", ns_name, 200)) ||
+ (GNUNET_OK != GNUNET_BIO_read_meta_data(fileR, "Read meta data error!", meta)) )
{
- GNUNET_free (buf);
+ GNUNET_BIO_read_close(fileR, &emsg);
+ GNUNET_free_non_null (emsg);
+ GNUNET_break (GNUNET_OK == GNUNET_DISK_directory_remove (fn));
GNUNET_free (fn);
return GNUNET_SYSERR;
}
- if (ranking != NULL)
- *ranking = ntohl (((int *) buf)[0]);
- zend = sizeof (int);
- while ((zend < len) && (buf[zend] != '\0'))
- zend++;
- if (zend == len)
+ if (GNUNET_OK != GNUNET_BIO_read_close(fileR, &emsg))
{
- GNUNET_free (buf);
+ GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
+ _("Failed to parse metadata about pseudonym from file `%s': %s\n"),
+ fn,
+ emsg);
+ GNUNET_break (GNUNET_OK == GNUNET_DISK_directory_remove (fn));
+ GNUNET_free_non_null (emsg);
GNUNET_free (fn);
return GNUNET_SYSERR;
}
- if (ns_name != NULL)
- {
- if (zend != sizeof (int))
- *ns_name = GNUNET_strdup (&buf[sizeof (int)]);
- else
- *ns_name = NULL;
- }
- zend++;
- size = len - zend;
- if (meta != NULL)
- {
- *meta = GNUNET_CONTAINER_meta_data_deserialize (&buf[zend], size);
- if ((*meta) == NULL)
- {
- /* invalid data! remove! */
- GNUNET_break (0);
- if (0 != UNLINK (fn))
- GNUNET_log_strerror_file (GNUNET_ERROR_TYPE_WARNING,
- "unlink", fn);
- GNUNET_free (buf);
- GNUNET_free (fn);
- return GNUNET_SYSERR;
- }
- }
GNUNET_free (fn);
- GNUNET_free (buf);
return GNUNET_OK;
}
/**
* Return the unique, human readable name for the given namespace.
*
+ * @param cfg configuration
+ * @param nsid cryptographic ID of the namespace
* @return NULL on failure (should never happen)
*/
char *
-GNUNET_PSEUDONYM_id_to_name (struct GNUNET_CONFIGURATION_Handle *cfg,
+GNUNET_PSEUDONYM_id_to_name (const struct GNUNET_CONFIGURATION_Handle *cfg,
const GNUNET_HashCode * nsid)
{
struct GNUNET_CONTAINER_MetaData *meta;
char *name;
GNUNET_HashCode nh;
char *fn;
- unsigned long long len;
- struct GNUNET_IO_Handle *fh;
+ uint64_t len;
+ struct GNUNET_DISK_FileHandle *fh;
unsigned int i;
unsigned int idx;
char *ret;
struct stat sbuf;
+ int32_t temp = 0;
+ int32_t *rank = &temp;
meta = NULL;
name = NULL;
- if (GNUNET_OK == read_info (cfg, nsid, &meta, NULL, &name))
+ if (GNUNET_OK == read_info (cfg, nsid, &meta, rank, &name))
{
if ((meta != NULL) && (name == NULL))
name = GNUNET_CONTAINER_meta_data_get_first_by_types (meta,
- EXTRACTOR_TITLE,
- EXTRACTOR_FILENAME,
- EXTRACTOR_DESCRIPTION,
- EXTRACTOR_SUBJECT,
- EXTRACTOR_PUBLISHER,
- EXTRACTOR_AUTHOR,
- EXTRACTOR_COMMENT,
- EXTRACTOR_SUMMARY,
- EXTRACTOR_OWNER,
+ EXTRACTOR_METATYPE_TITLE,
+ EXTRACTOR_METATYPE_FILENAME,
+ EXTRACTOR_METATYPE_DESCRIPTION,
+ EXTRACTOR_METATYPE_SUBJECT,
+ EXTRACTOR_METATYPE_PUBLISHER,
+ EXTRACTOR_METATYPE_AUTHOR_NAME,
+ EXTRACTOR_METATYPE_COMMENT,
+ EXTRACTOR_METATYPE_SUMMARY,
-1);
if (meta != NULL)
{
if (0 == STAT (fn, &sbuf))
GNUNET_DISK_file_size (fn, &len, GNUNET_YES);
fh = GNUNET_DISK_file_open (fn, GNUNET_DISK_OPEN_CREATE
- | GNUNET_DISK_OPEN_READWRITE, GNUNET_DISK_PERM_USER_READ
- | GNUNET_DISK_PERM_USER_WRITE);
+ | GNUNET_DISK_OPEN_READWRITE,
+ GNUNET_DISK_PERM_USER_READ |
+ GNUNET_DISK_PERM_USER_WRITE);
i = 0;
idx = -1;
while ((len >= sizeof (GNUNET_HashCode)) &&
GNUNET_DISK_file_write (fh, nsid, sizeof (GNUNET_HashCode)))
GNUNET_log_strerror_file (GNUNET_ERROR_TYPE_WARNING, "write", fn);
}
- GNUNET_DISK_file_close (&fh);
+ GNUNET_DISK_file_close (fh);
ret = GNUNET_malloc (strlen (name) + 32);
GNUNET_snprintf (ret, strlen (name) + 32, "%s-%u", name, idx);
GNUNET_free (name);
/**
* Get the namespace ID belonging to the given namespace name.
*
+ * @param cfg configuration to use
+ * @param ns_uname human-readable name for the namespace
+ * @param nsid set to namespace ID based on 'ns_uname'
* @return GNUNET_OK on success
*/
int
-GNUNET_PSEUDONYM_name_to_id (struct GNUNET_CONFIGURATION_Handle *cfg,
+GNUNET_PSEUDONYM_name_to_id (const struct GNUNET_CONFIGURATION_Handle *cfg,
const char *ns_uname, GNUNET_HashCode * nsid)
{
size_t slen;
- unsigned long long len;
+ uint64_t len;
unsigned int idx;
char *name;
GNUNET_HashCode nh;
char *fn;
- struct GNUNET_IO_Handle *fh;
+ struct GNUNET_DISK_FileHandle *fh;
idx = -1;
slen = strlen (ns_uname);
return GNUNET_SYSERR;
}
fh = GNUNET_DISK_file_open (fn, GNUNET_DISK_OPEN_CREATE
- | GNUNET_DISK_OPEN_READWRITE, GNUNET_DISK_PERM_USER_READ
- | GNUNET_DISK_PERM_USER_WRITE);
+ | GNUNET_DISK_OPEN_READWRITE,
+ GNUNET_DISK_PERM_USER_READ |
+ GNUNET_DISK_PERM_USER_WRITE);
GNUNET_free (fn);
- GNUNET_DISK_file_seek (fh, idx * sizeof (GNUNET_HashCode), GNUNET_SEEK_SET);
- if (sizeof (GNUNET_HashCode) != GNUNET_DISK_file_read (fh, nsid, sizeof (GNUNET_HashCode)))
+ GNUNET_DISK_file_seek (fh, idx * sizeof (GNUNET_HashCode),
+ GNUNET_DISK_SEEK_SET);
+ if (sizeof (GNUNET_HashCode) !=
+ GNUNET_DISK_file_read (fh, nsid, sizeof (GNUNET_HashCode)))
{
- GNUNET_DISK_file_close (&fh);
+ GNUNET_DISK_file_close (fh);
return GNUNET_SYSERR;
}
- GNUNET_DISK_file_close (&fh);
+ GNUNET_DISK_file_close (fh);
return GNUNET_OK;
}
-
+/**
+ * struct used to list the pseudonym
+ */
struct ListPseudonymClosure
{
+
+ /**
+ * iterator over pseudonym
+ */
GNUNET_PSEUDONYM_Iterator iterator;
+
+ /**
+ * Closure for iterator.
+ */
void *closure;
- struct GNUNET_CONFIGURATION_Handle *cfg;
+
+ /**
+ * Configuration to use.
+ */
+ const struct GNUNET_CONFIGURATION_Handle *cfg;
};
+
+
+/**
+ * the help function to list all available pseudonyms
+ * @param cls point to a struct ListPseudonymClosure
+ * @param fullname name of pseudonym
+ */
static int
list_pseudonym_helper (void *cls, const char *fullname)
{
int rating;
struct GNUNET_CONTAINER_MetaData *meta;
const char *fn;
+ char *str;
if (strlen (fullname) < sizeof (struct GNUNET_CRYPTO_HashAsciiEncoded))
return GNUNET_OK;
ret = GNUNET_OK;
if (GNUNET_OK != GNUNET_CRYPTO_hash_from_string (fn, &id))
return GNUNET_OK; /* invalid name */
- if (GNUNET_OK != read_info (c->cfg, &id, &meta, &rating, NULL))
+ str = NULL;
+ if (GNUNET_OK != read_info (c->cfg, &id, &meta, &rating, &str))
return GNUNET_OK; /* ignore entry */
+ GNUNET_free_non_null (str);
if (c->iterator != NULL)
ret = c->iterator (c->closure, &id, meta, rating);
GNUNET_CONTAINER_meta_data_destroy (meta);
return ret;
}
+
/**
* List all available pseudonyms.
+ *
+ * @param cfg overall configuration
+ * @param iterator function to call for each pseudonym
+ * @param closure closure for iterator
+ * @return number of pseudonyms found
*/
int
-GNUNET_PSEUDONYM_list_all (struct GNUNET_CONFIGURATION_Handle *cfg,
+GNUNET_PSEUDONYM_list_all (const struct GNUNET_CONFIGURATION_Handle *cfg,
GNUNET_PSEUDONYM_Iterator iterator, void *closure)
{
struct ListPseudonymClosure cls;
return ret;
}
+
/**
* Change the ranking of a pseudonym.
*
+ * @param cfg overall configuration
* @param nsid id of the pseudonym
* @param delta by how much should the rating be
* changed?
* @return new rating of the pseudonym
*/
int
-GNUNET_PSEUDONYM_rank (struct GNUNET_CONFIGURATION_Handle *cfg,
+GNUNET_PSEUDONYM_rank (const struct GNUNET_CONFIGURATION_Handle *cfg,
const GNUNET_HashCode * nsid, int delta)
{
struct GNUNET_CONTAINER_MetaData *meta;
return ranking;
}
-/**
- * Insert metadata into existing MD record (passed as cls).
- */
-static int
-merge_meta_helper (EXTRACTOR_KeywordType type, const char *data, void *cls)
-{
- struct GNUNET_CONTAINER_MetaData *meta = cls;
- GNUNET_CONTAINER_meta_data_insert (meta, type, data);
- return GNUNET_OK;
-}
-
-
/**
* Add a pseudonym to the set of known pseudonyms.
* For all pseudonym advertisements that we discover
- * FSUI should automatically call this function.
+ * FS should automatically call this function.
*
+ * @param cfg overall configuration
* @param id the pseudonym identifier
+ * @param meta metadata for the pseudonym
*/
void
-GNUNET_PSEUDONYM_add (struct GNUNET_CONFIGURATION_Handle *cfg,
+GNUNET_PSEUDONYM_add (const struct GNUNET_CONFIGURATION_Handle *cfg,
const GNUNET_HashCode * id,
const struct GNUNET_CONTAINER_MetaData *meta)
{
if ((0 == STAT (fn, &sbuf)) &&
(GNUNET_OK == read_info (cfg, id, &old, &ranking, &name)))
{
- GNUNET_CONTAINER_meta_data_get_contents (meta, &merge_meta_helper, old);
+ GNUNET_CONTAINER_meta_data_merge (old, meta);
write_pseudonym_info (cfg, id, old, ranking, name);
GNUNET_CONTAINER_meta_data_destroy (old);
GNUNET_free_non_null (name);
}
-
-
-
/* end of pseudonym.c */
projects / oweals / gnunet.git / blobdiff