#include "gnunet_bio_lib.h"
#include "gnunet_disk_lib.h"
+#define LOG(kind,...) GNUNET_log_from (kind, "util",__VA_ARGS__)
+
#define BIO_BUFFER_SIZE 65536
#define MAX_META_DATA (1024 * 1024)
struct GNUNET_DISK_FileHandle *fd;
struct GNUNET_BIO_ReadHandle *h;
- fd = GNUNET_DISK_file_open (fn, GNUNET_DISK_OPEN_READ,
- GNUNET_DISK_PERM_NONE);
+ fd =
+ GNUNET_DISK_file_open (fn, GNUNET_DISK_OPEN_READ, GNUNET_DISK_PERM_NONE);
if (NULL == fd)
return NULL;
- h = GNUNET_malloc (sizeof(struct GNUNET_BIO_ReadHandle) + BIO_BUFFER_SIZE);
- h->buffer = (char*) &h[1];
+ h = GNUNET_malloc (sizeof (struct GNUNET_BIO_ReadHandle) + BIO_BUFFER_SIZE);
+ h->buffer = (char *) &h[1];
h->size = BIO_BUFFER_SIZE;
h->fd = fd;
return h;
* @param emsg set to the error message
* @return GNUNET_OK on success, GNUNET_SYSERR otherwise
*/
-int GNUNET_BIO_read_close (struct GNUNET_BIO_ReadHandle *h,
- char **emsg)
+int
+GNUNET_BIO_read_close (struct GNUNET_BIO_ReadHandle *h, char **emsg)
{
- *emsg = h->emsg;
+ int err;
+
+ err = (NULL == h->emsg) ? GNUNET_OK : GNUNET_SYSERR;
+ if (emsg != NULL)
+ *emsg = h->emsg;
+ else
+ GNUNET_free_non_null (h->emsg);
GNUNET_DISK_file_close (h->fd);
GNUNET_free (h);
- return (NULL == *emsg) ? GNUNET_OK : GNUNET_SYSERR;
+ return err;
}
* @param len the number of bytes to read
* @return GNUNET_OK on success, GNUNET_SYSERR on failure
*/
-int GNUNET_BIO_read (struct GNUNET_BIO_ReadHandle *h,
- const char *what,
- void *result,
- size_t len)
+int
+GNUNET_BIO_read (struct GNUNET_BIO_ReadHandle *h, const char *what,
+ void *result, size_t len)
{
char *dst = result;
size_t min;
/* first, use buffer */
min = h->have - h->pos;
if (min > 0)
- {
- if (min > len - pos)
- min = len - pos;
- memcpy (&dst[pos], &h->buffer[h->pos], min);
- h->pos += min;
- pos += min;
- }
+ {
+ if (min > len - pos)
+ min = len - pos;
+ memcpy (&dst[pos], &h->buffer[h->pos], min);
+ h->pos += min;
+ pos += min;
+ }
if (pos == len)
- return GNUNET_OK; /* done! */
+ return GNUNET_OK; /* done! */
GNUNET_assert (h->have == h->pos);
/* fill buffer */
- ret = GNUNET_DISK_file_read (h->fd,
- h->buffer,
- h->size);
+ ret = GNUNET_DISK_file_read (h->fd, h->buffer, h->size);
if (ret == -1)
- {
- GNUNET_asprintf (&h->emsg,
- _("Error reading `%s': %s"),
- what,
+ {
+ GNUNET_asprintf (&h->emsg, _("Error reading `%s': %s"), what,
STRERROR (errno));
return GNUNET_SYSERR;
- }
+ }
if (ret == 0)
{
- GNUNET_asprintf (&h->emsg,
- _("Error reading `%s': %s"),
- what,
+ GNUNET_asprintf (&h->emsg, _("Error reading `%s': %s"), what,
_("End of file"));
return GNUNET_SYSERR;
}
h->pos = 0;
h->have = ret;
}
- while (pos < len); /* should always be true */
+ while (pos < len); /* should always be true */
return GNUNET_OK;
}
+/**
+ * Read the contents of a binary file into a buffer.
+ *
+ * @param h handle to an open file
+ * @param file name of the source file
+ * @param line line number in the source file
+ * @param result the buffer to write the result to
+ * @param len the number of bytes to read
+ * @return GNUNET_OK on success, GNUNET_SYSERR on failure
+ */
+int
+GNUNET_BIO_read_fn (struct GNUNET_BIO_ReadHandle *h, const char *file,
+ int line, void *result, size_t len)
+{
+ char what[1024];
+
+ GNUNET_snprintf (what, sizeof (what), "%s:%d", file, line);
+ return GNUNET_BIO_read (h, what, result, len);
+}
+
+
/**
* Read 0-terminated string from a file.
*
* @param maxLen maximum allowed length for the string
* @return GNUNET_OK on success, GNUNET_SYSERR on failure
*/
-int GNUNET_BIO_read_string (struct GNUNET_BIO_ReadHandle *h,
- const char *what,
- char **result,
- size_t maxLen)
+int
+GNUNET_BIO_read_string (struct GNUNET_BIO_ReadHandle *h, const char *what,
+ char **result, size_t maxLen)
{
char *buf;
uint32_t big;
- if (! GNUNET_BIO_read_int32 (h, &big))
- return GNUNET_SYSERR;
+ if (GNUNET_OK != GNUNET_BIO_read_int32 (h, &big))
+ {
+ GNUNET_free_non_null (h->emsg);
+ GNUNET_asprintf (&h->emsg, _("Error reading length of string `%s'"),
+ what);
+ return GNUNET_SYSERR;
+ }
if (big == 0)
{
*result = NULL;
if (big > maxLen)
{
GNUNET_asprintf (&h->emsg,
- _("String `%s' longer than allowed (%u > %u)"),
- what,
- big,
- maxLen);
+ _("String `%s' longer than allowed (%u > %u)"), what,
+ big, maxLen);
return GNUNET_SYSERR;
}
buf = GNUNET_malloc (big);
+ *result = buf;
buf[--big] = '\0';
- if (big != GNUNET_BIO_read (h, what, buf, big))
+ if (big == 0)
+ return GNUNET_OK;
+ if (GNUNET_OK != GNUNET_BIO_read (h, what, buf, big))
{
GNUNET_free (buf);
+ *result = NULL;
return GNUNET_SYSERR;
}
- *result = buf;
return GNUNET_OK;
}
* @param result the buffer to store a pointer to the (allocated) metadata
* @return GNUNET_OK on success, GNUNET_SYSERR on failure
*/
-int GNUNET_BIO_read_meta_data (struct GNUNET_BIO_ReadHandle *h,
- const char *what,
- struct GNUNET_CONTAINER_MetaData **result)
+int
+GNUNET_BIO_read_meta_data (struct GNUNET_BIO_ReadHandle *h, const char *what,
+ struct GNUNET_CONTAINER_MetaData **result)
{
uint32_t size;
char *buf;
struct GNUNET_CONTAINER_MetaData *meta;
- if (GNUNET_BIO_read_int32__ (h,
- what,
- (int32_t*) &size) != GNUNET_OK)
+ if (GNUNET_BIO_read_int32 (h, (int32_t *) & size) != GNUNET_OK)
return GNUNET_SYSERR;
+ if (size == 0)
+ {
+ *result = NULL;
+ return GNUNET_OK;
+ }
if (size > MAX_META_DATA)
{
GNUNET_asprintf (&h->emsg,
- _("Serialized metadata `%s' larger than allowed (%u > %u)"),
- what,
- size,
- MAX_META_DATA);
+ _
+ ("Serialized metadata `%s' larger than allowed (%u>%u)"),
+ what, size, MAX_META_DATA);
return GNUNET_SYSERR;
}
buf = GNUNET_malloc (size);
- if (size !=
- GNUNET_BIO_read (h, what, buf, size))
+ if (GNUNET_OK != GNUNET_BIO_read (h, what, buf, size))
{
GNUNET_free (buf);
return GNUNET_SYSERR;
if (meta == NULL)
{
GNUNET_free (buf);
- GNUNET_asprintf (&h->emsg,
- _("Metadata `%s' failed to deserialize"),
+ GNUNET_asprintf (&h->emsg, _("Metadata `%s' failed to deserialize"),
what);
return GNUNET_SYSERR;
}
* Read an (u)int32_t.
*
* @param h hande to open file
- * @param what describes what is being read (for error message creation)
+ * @param file name of the source file
+ * @param line line number in the source file
* @param i address of 32-bit integer to read
* @return GNUNET_OK on success, GNUNET_SYSERR on error
- */
-int GNUNET_BIO_read_int32__ (struct GNUNET_BIO_ReadHandle *h,
- const char *what,
- int32_t *i)
+ */
+int
+GNUNET_BIO_read_int32__ (struct GNUNET_BIO_ReadHandle *h, const char *file,
+ int line, int32_t * i)
{
int32_t big;
- if (sizeof (int32_t) !=
- GNUNET_BIO_read (h,
- what,
- &big,
- sizeof (int32_t)))
+ if (GNUNET_OK != GNUNET_BIO_read_fn (h, file, line, &big, sizeof (int32_t)))
return GNUNET_SYSERR;
*i = ntohl (big);
return GNUNET_OK;
* Read an (u)int64_t.
*
* @param h hande to open file
- * @param what describes what is being read (for error message creation)
+ * @param file name of the source file
+ * @param line line number in the source file
* @param i address of 64-bit integer to read
* @return GNUNET_OK on success, GNUNET_SYSERR on error
- */
-int GNUNET_BIO_read_int64__ (struct GNUNET_BIO_ReadHandle *h,
- const char *what,
- int64_t *i)
+ */
+int
+GNUNET_BIO_read_int64__ (struct GNUNET_BIO_ReadHandle *h, const char *file,
+ int line, int64_t * i)
{
int64_t big;
- if (sizeof (int64_t) !=
- GNUNET_BIO_read (h,
- what,
- &big,
- sizeof (int64_t)))
+ if (GNUNET_OK != GNUNET_BIO_read_fn (h, file, line, &big, sizeof (int64_t)))
return GNUNET_SYSERR;
*i = GNUNET_ntohll (big);
return GNUNET_OK;
* @param fn file name to be opened
* @return IO handle on success, NULL on error
*/
-struct GNUNET_BIO_WriteHandle *GNUNET_BIO_write_open (const char *fn)
+struct GNUNET_BIO_WriteHandle *
+GNUNET_BIO_write_open (const char *fn)
{
struct GNUNET_DISK_FileHandle *fd;
struct GNUNET_BIO_WriteHandle *h;
- fd = GNUNET_DISK_file_open (fn,
- GNUNET_DISK_OPEN_WRITE | GNUNET_DISK_OPEN_TRUNCATE | GNUNET_DISK_OPEN_CREATE,
- GNUNET_DISK_PERM_USER_READ | GNUNET_DISK_PERM_USER_WRITE);
+ fd = GNUNET_DISK_file_open (fn,
+ GNUNET_DISK_OPEN_WRITE |
+ GNUNET_DISK_OPEN_TRUNCATE |
+ GNUNET_DISK_OPEN_CREATE,
+ GNUNET_DISK_PERM_USER_READ |
+ GNUNET_DISK_PERM_USER_WRITE);
if (NULL == fd)
return NULL;
- h = GNUNET_malloc (sizeof(struct GNUNET_BIO_WriteHandle) + BIO_BUFFER_SIZE);
- h->buffer = (char*) &h[1];
+ h =
+ GNUNET_malloc (sizeof (struct GNUNET_BIO_WriteHandle) + BIO_BUFFER_SIZE);
+ h->buffer = (char *) &h[1];
h->size = BIO_BUFFER_SIZE;
h->fd = fd;
+
return h;
}
* @param h file handle
* @return GNUNET_OK on success, GNUNET_SYSERR otherwise
*/
-int GNUNET_BIO_write_close (struct GNUNET_BIO_WriteHandle *h)
+int
+GNUNET_BIO_write_close (struct GNUNET_BIO_WriteHandle *h)
{
+ ssize_t wrt;
int ret;
if (NULL == h->fd)
}
else
{
+ wrt = GNUNET_DISK_file_write (h->fd, h->buffer, h->have);
+ if (wrt == h->have)
+ ret = GNUNET_OK;
+ else
+ ret = GNUNET_SYSERR;
GNUNET_DISK_file_close (h->fd);
- ret = GNUNET_OK;
}
GNUNET_free (h);
return ret;
* @param n number of bytes to write
* @return GNUNET_OK on success, GNUNET_SYSERR on error
*/
-int GNUNET_BIO_write (struct GNUNET_BIO_WriteHandle *h,
- const void *buffer,
- size_t n)
+int
+GNUNET_BIO_write (struct GNUNET_BIO_WriteHandle *h, const void *buffer,
+ size_t n)
{
const char *src = buffer;
size_t min;
/* first, just use buffer */
min = h->size - h->have;
if (min > n - pos)
- min = n - pos;
+ min = n - pos;
memcpy (&h->buffer[h->have], &src[pos], min);
pos += min;
h->have += min;
if (pos == n)
- return GNUNET_OK; /* done */
+ return GNUNET_OK; /* done */
GNUNET_assert (h->have == h->size);
ret = GNUNET_DISK_file_write (h->fd, h->buffer, h->size);
if (ret != h->size)
- {
- GNUNET_DISK_file_close (h->fd);
- h->fd = NULL;
- return GNUNET_SYSERR; /* error */
- }
+ {
+ GNUNET_DISK_file_close (h->fd);
+ h->fd = NULL;
+ return GNUNET_SYSERR; /* error */
+ }
h->have = 0;
}
- while (pos < n); /* should always be true */
+ while (pos < n); /* should always be true */
+ GNUNET_break (0);
return GNUNET_OK;
}
* @param s string to write (can be NULL)
* @return GNUNET_OK on success, GNUNET_SYSERR on error
*/
-int GNUNET_BIO_write_string (struct GNUNET_BIO_WriteHandle *h,
- const char *s)
+int
+GNUNET_BIO_write_string (struct GNUNET_BIO_WriteHandle *h, const char *s)
{
uint32_t slen;
- slen = (uint32_t) ((s == NULL) ? 0 : strlen(s) + 1);
- if (GNUNET_OK !=
- GNUNET_BIO_write_int32 (h, slen))
+ slen = (uint32_t) ((s == NULL) ? 0 : strlen (s) + 1);
+ if (GNUNET_OK != GNUNET_BIO_write_int32 (h, slen))
return GNUNET_SYSERR;
if (0 != slen)
return GNUNET_BIO_write (h, s, slen - 1);
* @param m metadata to write
* @return GNUNET_OK on success, GNUNET_SYSERR on error
*/
-int GNUNET_BIO_write_meta_data (struct GNUNET_BIO_WriteHandle *h,
- const struct GNUNET_CONTAINER_MetaData *m)
+int
+GNUNET_BIO_write_meta_data (struct GNUNET_BIO_WriteHandle *h,
+ const struct GNUNET_CONTAINER_MetaData *m)
{
- unsigned int size;
+ ssize_t size;
char *buf;
- size = GNUNET_CONTAINER_meta_data_get_serialized_size (m,
- GNUNET_CONTAINER_META_DATA_SERIALIZE_FULL
- |
- GNUNET_CONTAINER_META_DATA_SERIALIZE_NO_COMPRESS);
- if (size > MAX_META_DATA)
- size = MAX_META_DATA;
- buf = GNUNET_malloc (size);
- GNUNET_CONTAINER_meta_data_serialize (m,
- buf,
- size,
- GNUNET_CONTAINER_META_DATA_SERIALIZE_PART |
- GNUNET_CONTAINER_META_DATA_SERIALIZE_NO_COMPRESS);
- if ( (GNUNET_OK !=
- GNUNET_BIO_write_int32 (h, size)) ||
- (GNUNET_OK !=
- GNUNET_BIO_write (h, buf, size)) )
+ if (m == NULL)
+ return GNUNET_BIO_write_int32 (h, 0);
+ buf = NULL;
+ size =
+ GNUNET_CONTAINER_meta_data_serialize (m, &buf, MAX_META_DATA,
+ GNUNET_CONTAINER_META_DATA_SERIALIZE_PART);
+ if (size == -1)
+ {
+ GNUNET_free (buf);
+ return GNUNET_SYSERR;
+ }
+ if ((GNUNET_OK != GNUNET_BIO_write_int32 (h, (uint32_t) size)) ||
+ (GNUNET_OK != GNUNET_BIO_write (h, buf, size)))
{
GNUNET_free (buf);
return GNUNET_SYSERR;
* @param h hande to open file
* @param i address of 32-bit integer to write
* @return GNUNET_OK on success, GNUNET_SYSERR on error
- */
-int GNUNET_BIO_write_int32 (struct GNUNET_BIO_WriteHandle *h,
- int32_t i)
+ */
+int
+GNUNET_BIO_write_int32 (struct GNUNET_BIO_WriteHandle *h, int32_t i)
{
int32_t big;
+
big = htonl (i);
return GNUNET_BIO_write (h, &big, sizeof (int32_t));
}
* @param h hande to open file
* @param i address of 64-bit integer to write
* @return GNUNET_OK on success, GNUNET_SYSERR on error
- */
-int GNUNET_BIO_write_int64 (struct GNUNET_BIO_WriteHandle *h,
- int64_t i)
+ */
+int
+GNUNET_BIO_write_int64 (struct GNUNET_BIO_WriteHandle *h, int64_t i)
{
int64_t big;
+
big = GNUNET_htonll (i);
return GNUNET_BIO_write (h, &big, sizeof (int64_t));
}
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