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-rw-r--r--dbus/dbus-marshal-basic.c1239
1 files changed, 648 insertions, 591 deletions
diff --git a/dbus/dbus-marshal-basic.c b/dbus/dbus-marshal-basic.c
index 11f069e2..92517c9f 100644
--- a/dbus/dbus-marshal-basic.c
+++ b/dbus/dbus-marshal-basic.c
@@ -42,6 +42,67 @@
* @{
*/
+static void
+pack_4_octets (dbus_uint32_t value,
+ int byte_order,
+ unsigned char *data)
+{
+ _dbus_assert (_DBUS_ALIGN_ADDRESS (data, 4) == data);
+
+ if ((byte_order) == DBUS_LITTLE_ENDIAN)
+ *((dbus_uint32_t*)(data)) = DBUS_UINT32_TO_LE (value);
+ else
+ *((dbus_uint32_t*)(data)) = DBUS_UINT32_TO_BE (value);
+}
+
+static void
+pack_8_octets (DBusBasicValue value,
+ int byte_order,
+ unsigned char *data)
+{
+ _dbus_assert (_DBUS_ALIGN_ADDRESS (data, 8) == data);
+
+#ifdef DBUS_HAVE_INT64
+ if ((byte_order) == DBUS_LITTLE_ENDIAN)
+ *((dbus_uint64_t*)(data)) = DBUS_UINT64_TO_LE (value.u64);
+ else
+ *((dbus_uint64_t*)(data)) = DBUS_UINT64_TO_BE (value.u64);
+#else
+ *(DBus8ByteStruct*)data = value.u64;
+ swap_8_octets ((DBusBasicValue*)data, byte_order);
+#endif
+}
+
+/**
+ * Packs a 32 bit unsigned integer into a data pointer.
+ *
+ * @param value the value
+ * @param byte_order the byte order to use
+ * @param data the data pointer
+ */
+void
+_dbus_pack_uint32 (dbus_uint32_t value,
+ int byte_order,
+ unsigned char *data)
+{
+ pack_4_octets (value, byte_order, data);
+}
+
+/**
+ * Packs a 32 bit signed integer into a data pointer.
+ *
+ * @param value the value
+ * @param byte_order the byte order to use
+ * @param data the data pointer
+ */
+void
+_dbus_pack_int32 (dbus_int32_t value,
+ int byte_order,
+ unsigned char *data)
+{
+ pack_4_octets ((dbus_uint32_t) value, byte_order, data);
+}
+
static dbus_uint32_t
unpack_4_octets (int byte_order,
const unsigned char *data)
@@ -75,37 +136,37 @@ swap_bytes (unsigned char *data,
}
#endif /* !DBUS_HAVE_INT64 */
-/**
- * Union used to manipulate 8 bytes as if they
- * were various types.
- */
-typedef union
+static void
+swap_8_octets (DBusBasicValue *value,
+ int byte_order)
{
+ if (byte_order != DBUS_COMPILER_BYTE_ORDER)
+ {
#ifdef DBUS_HAVE_INT64
- dbus_int64_t s; /**< 64-bit integer */
- dbus_uint64_t u; /**< 64-bit unsigned integer */
+ value->u64 = DBUS_UINT64_SWAP_LE_BE (value->u64);
+#else
+ swap_bytes ((unsigned char *)value, 8);
#endif
- double d; /**< double */
-} DBusOctets8;
+ }
+}
-static DBusOctets8
+static DBusBasicValue
unpack_8_octets (int byte_order,
const unsigned char *data)
{
- DBusOctets8 r;
+ DBusBasicValue r;
_dbus_assert (_DBUS_ALIGN_ADDRESS (data, 8) == data);
_dbus_assert (sizeof (r) == 8);
#ifdef DBUS_HAVE_INT64
if (byte_order == DBUS_LITTLE_ENDIAN)
- r.u = DBUS_UINT64_FROM_LE (*(dbus_uint64_t*)data);
+ r.u64 = DBUS_UINT64_FROM_LE (*(dbus_uint64_t*)data);
else
- r.u = DBUS_UINT64_FROM_BE (*(dbus_uint64_t*)data);
+ r.u64 = DBUS_UINT64_FROM_BE (*(dbus_uint64_t*)data);
#else
- r.d = *(double*)data;
- if (byte_order != DBUS_COMPILER_BYTE_ORDER)
- swap_bytes ((unsigned char*) &r, sizeof (r));
+ r.u64 = *(DBus8ByteStruct*)data;
+ swap_8_octets (&r, byte_order);
#endif
return r;
@@ -139,161 +200,11 @@ _dbus_unpack_int32 (int byte_order,
return (dbus_int32_t) unpack_4_octets (byte_order, data);
}
-#ifdef DBUS_HAVE_INT64
-/**
- * Unpacks a 64 bit unsigned integer from a data pointer
- *
- * @param byte_order The byte order to use
- * @param data the data pointer
- * @returns the integer
- */
-dbus_uint64_t
-_dbus_unpack_uint64 (int byte_order,
- const unsigned char *data)
-{
- DBusOctets8 r;
-
- r = unpack_8_octets (byte_order, data);
-
- return r.u;
-}
-
-/**
- * Unpacks a 64 bit signed integer from a data pointer
- *
- * @param byte_order The byte order to use
- * @param data the data pointer
- * @returns the integer
- */
-dbus_int64_t
-_dbus_unpack_int64 (int byte_order,
- const unsigned char *data)
-{
- DBusOctets8 r;
-
- r = unpack_8_octets (byte_order, data);
-
- return r.s;
-}
-
-#endif /* DBUS_HAVE_INT64 */
-
-static void
-pack_4_octets (dbus_uint32_t value,
- int byte_order,
- unsigned char *data)
-{
- _dbus_assert (_DBUS_ALIGN_ADDRESS (data, 4) == data);
-
- if ((byte_order) == DBUS_LITTLE_ENDIAN)
- *((dbus_uint32_t*)(data)) = DBUS_UINT32_TO_LE (value);
- else
- *((dbus_uint32_t*)(data)) = DBUS_UINT32_TO_BE (value);
-}
-
-static void
-swap_8_octets (DBusOctets8 *value,
- int byte_order)
-{
- if (byte_order != DBUS_COMPILER_BYTE_ORDER)
- {
-#ifdef DBUS_HAVE_INT64
- value->u = DBUS_UINT64_SWAP_LE_BE (value->u);
-#else
- swap_bytes ((unsigned char *)value, 8);
-#endif
- }
-}
-
-static void
-pack_8_octets (DBusOctets8 value,
- int byte_order,
- unsigned char *data)
-{
- _dbus_assert (_DBUS_ALIGN_ADDRESS (data, 8) == data);
-
-#ifdef DBUS_HAVE_INT64
- if ((byte_order) == DBUS_LITTLE_ENDIAN)
- *((dbus_uint64_t*)(data)) = DBUS_UINT64_TO_LE (value.u);
- else
- *((dbus_uint64_t*)(data)) = DBUS_UINT64_TO_BE (value.u);
-#else
- memcpy (data, &value, 8);
- swap_8_octets ((DBusOctets8*)data, byte_order);
-#endif
-}
-
-/**
- * Packs a 32 bit unsigned integer into a data pointer.
- *
- * @param value the value
- * @param byte_order the byte order to use
- * @param data the data pointer
- */
-void
-_dbus_pack_uint32 (dbus_uint32_t value,
- int byte_order,
- unsigned char *data)
-{
- pack_4_octets (value, byte_order, data);
-}
-
-/**
- * Packs a 32 bit signed integer into a data pointer.
- *
- * @param value the value
- * @param byte_order the byte order to use
- * @param data the data pointer
- */
-void
-_dbus_pack_int32 (dbus_int32_t value,
- int byte_order,
- unsigned char *data)
-{
- pack_4_octets ((dbus_uint32_t) value, byte_order, data);
-}
-
-#ifdef DBUS_HAVE_INT64
-/**
- * Packs a 64 bit unsigned integer into a data pointer.
- *
- * @param value the value
- * @param byte_order the byte order to use
- * @param data the data pointer
- */
-void
-_dbus_pack_uint64 (dbus_uint64_t value,
- int byte_order,
- unsigned char *data)
-{
- DBusOctets8 r;
- r.u = value;
- pack_8_octets (r, byte_order, data);
-}
-
-/**
- * Packs a 64 bit signed integer into a data pointer.
- *
- * @param value the value
- * @param byte_order the byte order to use
- * @param data the data pointer
- */
-void
-_dbus_pack_int64 (dbus_int64_t value,
- int byte_order,
- unsigned char *data)
-{
- DBusOctets8 r;
- r.s = value;
- pack_8_octets (r, byte_order, data);
-}
-#endif /* DBUS_HAVE_INT64 */
-
static void
set_4_octets (DBusString *str,
- int byte_order,
int offset,
- dbus_uint32_t value)
+ dbus_uint32_t value,
+ int byte_order)
{
char *data;
@@ -307,9 +218,9 @@ set_4_octets (DBusString *str,
static void
set_8_octets (DBusString *str,
- int byte_order,
int offset,
- DBusOctets8 value)
+ DBusBasicValue value,
+ int byte_order)
{
char *data;
@@ -322,87 +233,23 @@ set_8_octets (DBusString *str,
}
/**
- * Sets the 4 bytes at the given offset to a marshaled signed integer,
- * replacing anything found there previously.
- *
- * @param str the string to write the marshalled int to
- * @param offset the byte offset where int should be written
- * @param byte_order the byte order to use
- * @param value the value
- *
- */
-void
-_dbus_marshal_set_int32 (DBusString *str,
- int byte_order,
- int offset,
- dbus_int32_t value)
-{
- set_4_octets (str, byte_order, offset, (dbus_uint32_t) value);
-}
-
-/**
* Sets the 4 bytes at the given offset to a marshaled unsigned
* integer, replacing anything found there previously.
*
* @param str the string to write the marshalled int to
- * @param offset the byte offset where int should be written
- * @param byte_order the byte order to use
+ * @param pos the byte offset where int should be written
* @param value the value
- *
- */
-void
-_dbus_marshal_set_uint32 (DBusString *str,
- int byte_order,
- int offset,
- dbus_uint32_t value)
-{
- set_4_octets (str, byte_order, offset, value);
-}
-
-#ifdef DBUS_HAVE_INT64
-
-/**
- * Sets the 8 bytes at the given offset to a marshaled signed integer,
- * replacing anything found there previously.
- *
- * @param str the string to write the marshalled int to
- * @param offset the byte offset where int should be written
- * @param byte_order the byte order to use
- * @param value the value
- *
- */
-void
-_dbus_marshal_set_int64 (DBusString *str,
- int byte_order,
- int offset,
- dbus_int64_t value)
-{
- DBusOctets8 r;
- r.s = value;
- set_8_octets (str, byte_order, offset, r);
-}
-
-/**
- * Sets the 8 bytes at the given offset to a marshaled unsigned
- * integer, replacing anything found there previously.
- *
- * @param str the string to write the marshalled int to
- * @param offset the byte offset where int should be written
* @param byte_order the byte order to use
- * @param value the value
*
*/
void
-_dbus_marshal_set_uint64 (DBusString *str,
- int byte_order,
- int offset,
- dbus_uint64_t value)
+_dbus_marshal_set_uint32 (DBusString *str,
+ int pos,
+ dbus_uint32_t value,
+ int byte_order)
{
- DBusOctets8 r;
- r.u = value;
- set_8_octets (str, byte_order, offset, r);
+ set_4_octets (str, pos, value, byte_order);
}
-#endif /* DBUS_HAVE_INT64 */
/**
* Sets the existing marshaled string at the given offset with
@@ -415,42 +262,166 @@ _dbus_marshal_set_uint64 (DBusString *str,
* string. Use with caution.
*
* @param str the string to write the marshalled string to
- * @param offset the byte offset where string should be written
+ * @param pos the position of the marshaled string length
+ * @param value the value
* @param byte_order the byte order to use
+ * @param old_end_pos place to store byte after the nul byte of the old value
+ * @param new_end_pos place to store byte after the nul byte of the new value
+ * @returns #TRUE on success, #FALSE if no memory
+ *
+ */
+static dbus_bool_t
+set_string (DBusString *str,
+ int pos,
+ const char *value,
+ int byte_order,
+ int *old_end_pos,
+ int *new_end_pos)
+{
+ int old_len, new_len;
+ DBusString dstr;
+
+ _dbus_string_init_const (&dstr, value);
+
+ old_len = _dbus_demarshal_uint32 (str, pos, byte_order, NULL);
+
+ new_len = _dbus_string_get_length (&dstr);
+
+ if (!_dbus_string_replace_len (&dstr, 0, new_len,
+ str, pos + 4, old_len))
+ return FALSE;
+
+ _dbus_marshal_set_uint32 (str, pos, new_len, byte_order);
+
+ if (old_end_pos)
+ *old_end_pos = pos + 4 + old_len + 1;
+ if (new_end_pos)
+ *new_end_pos = pos + 4 + new_len + 1;
+
+ return TRUE;
+}
+
+/**
+ * Sets the existing marshaled signature at the given offset to a new
+ * marshaled signature. Same basic ideas as set_string().
+ *
+ * @param str the string to write the marshalled signature to
+ * @param pos the position of the marshaled signature length
* @param value the value
- * @param len the length to use
- * @returns #TRUE on success
+ * @param byte_order the byte order to use
+ * @param old_end_pos place to store byte after the nul byte of the old value
+ * @param new_end_pos place to store byte after the nul byte of the new value
+ * @returns #TRUE on success, #FALSE if no memory
*
*/
-dbus_bool_t
-_dbus_marshal_set_string (DBusString *str,
- int byte_order,
- int offset,
- const DBusString *value,
- int len)
+static dbus_bool_t
+set_signature (DBusString *str,
+ int pos,
+ const char *value,
+ int byte_order,
+ int *old_end_pos,
+ int *new_end_pos)
{
- int old_len;
+ int old_len, new_len;
+ DBusString dstr;
- _dbus_assert (byte_order == DBUS_LITTLE_ENDIAN ||
- byte_order == DBUS_BIG_ENDIAN);
+ _dbus_string_init_const (&dstr, value);
- old_len = _dbus_demarshal_uint32 (str, byte_order,
- offset, NULL);
+ old_len = _dbus_string_get_byte (str, pos);
+ new_len = _dbus_string_get_length (&dstr);
- if (!_dbus_string_replace_len (value, 0, len,
- str, offset + 4, old_len))
+ if (!_dbus_string_replace_len (&dstr, 0, new_len,
+ str, pos + 1, old_len))
return FALSE;
- _dbus_marshal_set_uint32 (str, byte_order,
- offset, len);
+ _dbus_string_set_byte (str, pos, new_len);
+
+ if (old_end_pos)
+ *old_end_pos = pos + 1 + old_len + 1;
+ if (new_end_pos)
+ *new_end_pos = pos + 1 + new_len + 1;
return TRUE;
}
+/**
+ * Sets an existing basic type value to a new value.
+ * Arguments work the same way as _dbus_marshal_basic_type().
+ *
+ * @param str the string
+ * @param pos location of the current value
+ * @param type the type of the current and new values
+ * @param value the address of the new value
+ * @param byte_order byte order for marshaling
+ * @param old_end_pos location to store end position of the old value, or #NULL
+ * @param new_end_pos location to store end position of the new value, or #NULL
+ * @returns #FALSE if no memory
+ */
+dbus_bool_t
+_dbus_marshal_set_basic_type (DBusString *str,
+ int pos,
+ int type,
+ const void *value,
+ int byte_order,
+ int *old_end_pos,
+ int *new_end_pos)
+{
+ const DBusBasicValue *vp;
+
+ vp = value;
+
+ switch (type)
+ {
+ case DBUS_TYPE_BYTE:
+ case DBUS_TYPE_BOOLEAN:
+ _dbus_string_set_byte (str, pos, vp->byt);
+ if (old_end_pos)
+ *old_end_pos = pos + 1;
+ if (new_end_pos)
+ *new_end_pos = pos + 1;
+ return TRUE;
+ break;
+ case DBUS_TYPE_INT32:
+ case DBUS_TYPE_UINT32:
+ set_4_octets (str, pos, vp->u32, byte_order);
+ if (old_end_pos)
+ *old_end_pos = pos + 4;
+ if (new_end_pos)
+ *new_end_pos = pos + 4;
+ return TRUE;
+ break;
+ case DBUS_TYPE_INT64:
+ case DBUS_TYPE_UINT64:
+ case DBUS_TYPE_DOUBLE:
+ {
+ set_8_octets (str, pos, *vp, byte_order);
+ if (old_end_pos)
+ *old_end_pos = pos + 8;
+ if (new_end_pos)
+ *new_end_pos = pos + 8;
+ return TRUE;
+ }
+ break;
+ case DBUS_TYPE_STRING:
+ case DBUS_TYPE_OBJECT_PATH:
+ return set_string (str, pos, vp->str, byte_order,
+ old_end_pos, new_end_pos);
+ break;
+ case DBUS_TYPE_SIGNATURE:
+ return set_signature (str, pos, vp->str, byte_order,
+ old_end_pos, new_end_pos);
+ break;
+ default:
+ _dbus_assert_not_reached ("not a basic type");
+ return FALSE;
+ break;
+ }
+}
+
static dbus_uint32_t
demarshal_4_octets (const DBusString *str,
- int byte_order,
int pos,
+ int byte_order,
int *new_pos)
{
pos = _DBUS_ALIGN_VALUE (pos, 4);
@@ -473,11 +444,11 @@ demarshal_4_octets (const DBusString *str,
*/
dbus_uint32_t
_dbus_demarshal_uint32 (const DBusString *str,
- int byte_order,
int pos,
+ int byte_order,
int *new_pos)
{
- return demarshal_4_octets (str, byte_order, pos, new_pos);
+ return demarshal_4_octets (str, pos, byte_order, new_pos);
}
/**
@@ -486,7 +457,7 @@ _dbus_demarshal_uint32 (const DBusString *str,
* if the basic type is "double" then the pointer is
* a double*, and if it's "char*" then the pointer is
* a "char**".
- *
+ *
* A value of type #DBusBasicValue is guaranteed to be large enough to
* hold any of the types that may be returned, which is handy if you
* are trying to do things generically. For example you can pass
@@ -495,26 +466,28 @@ _dbus_demarshal_uint32 (const DBusString *str,
* move a value from one place to another.
*
* @param str the string containing the data
+ * @param pos position in the string
* @param type type of value to demarshal
* @param value pointer to return value data
* @param byte_order the byte order
- * @param pos position in the string
* @param new_pos pointer to update with new position, or #NULL
**/
void
_dbus_demarshal_basic_type (const DBusString *str,
+ int pos,
int type,
void *value,
int byte_order,
- int pos,
int *new_pos)
{
const char *str_data;
DBusBasicValue *vp;
+ _dbus_assert (_dbus_type_is_basic (type));
+
str_data = _dbus_string_get_const_data (str);
vp = value;
-
+
switch (type)
{
case DBUS_TYPE_BYTE:
@@ -527,21 +500,21 @@ _dbus_demarshal_basic_type (const DBusString *str,
pos = _DBUS_ALIGN_VALUE (pos, 4);
vp->u32 = *(dbus_uint32_t *)(str_data + pos);
if (byte_order != DBUS_COMPILER_BYTE_ORDER)
- vp->u32 = DBUS_UINT32_SWAP_LE_BE (*(dbus_uint32_t *) value);
+ vp->u32 = DBUS_UINT32_SWAP_LE_BE (vp->u32);
pos += 4;
break;
-#ifdef DBUS_HAVE_INT64
case DBUS_TYPE_INT64:
case DBUS_TYPE_UINT64:
-#endif /* DBUS_HAVE_INT64 */
case DBUS_TYPE_DOUBLE:
pos = _DBUS_ALIGN_VALUE (pos, 8);
- memcpy (vp, str_data + pos, 8);
- if (byte_order != DBUS_COMPILER_BYTE_ORDER)
#ifdef DBUS_HAVE_INT64
- vp->u64 = DBUS_UINT64_SWAP_LE_BE (*(dbus_uint64_t *) value);
+ if (byte_order != DBUS_COMPILER_BYTE_ORDER)
+ vp->u64 = DBUS_UINT64_SWAP_LE_BE (*(dbus_uint64_t*)(str_data + pos));
+ else
+ vp->u64 = *(dbus_uint64_t*)(str_data + pos);
#else
- swap_bytes (value, 8);
+ vp->u64 = *(DBus8ByteStruct*) (str_data + pos);
+ swap_8_octets (vp, byte_order);
#endif
pos += 8;
break;
@@ -550,7 +523,7 @@ _dbus_demarshal_basic_type (const DBusString *str,
{
int len;
- len = _dbus_demarshal_uint32 (str, byte_order, pos, &pos);
+ len = _dbus_demarshal_uint32 (str, pos, byte_order, &pos);
vp->str = (char*) str_data + pos;
@@ -580,285 +553,6 @@ _dbus_demarshal_basic_type (const DBusString *str,
*new_pos = pos;
}
-/**
- * Skips over a basic type, reporting the following position.
- *
- * @param str the string containing the data
- * @param type type of value to demarshal
- * @param byte_order the byte order
- * @param pos pointer to position in the string,
- * updated on return to new position
- **/
-void
-_dbus_marshal_skip_basic_type (const DBusString *str,
- int type,
- int byte_order,
- int *pos)
-{
- switch (type)
- {
- case DBUS_TYPE_BYTE:
- case DBUS_TYPE_BOOLEAN:
- (*pos)++;
- break;
- case DBUS_TYPE_INT32:
- case DBUS_TYPE_UINT32:
- *pos = _DBUS_ALIGN_VALUE (*pos, 4);
- *pos += 4;
- break;
-#ifdef DBUS_HAVE_INT64
- case DBUS_TYPE_INT64:
- case DBUS_TYPE_UINT64:
-#endif /* DBUS_HAVE_INT64 */
- case DBUS_TYPE_DOUBLE:
- *pos = _DBUS_ALIGN_VALUE (*pos, 8);
- *pos += 8;
- break;
- case DBUS_TYPE_STRING:
- case DBUS_TYPE_OBJECT_PATH:
- {
- int len;
-
- len = _dbus_demarshal_uint32 (str, byte_order, *pos, pos);
-
- *pos += len + 1; /* length plus nul */
- }
- break;
- case DBUS_TYPE_SIGNATURE:
- {
- int len;
-
- len = _dbus_string_get_byte (str, *pos);
-
- *pos += len + 2; /* length byte plus length plus nul */
- }
- break;
- default:
- _dbus_warn ("type %s not a basic type\n",
- _dbus_type_to_string (type));
- _dbus_assert_not_reached ("not a basic type");
- break;
- }
-}
-
-/**
- * Skips an array, returning the next position.
- *
- * @param str the string containing the data
- * @param byte_order the byte order
- * @param pos pointer to position in the string,
- * updated on return to new position
- */
-void
-_dbus_marshal_skip_array (const DBusString *str,
- int byte_order,
- int element_type,
- int *pos)
-{
- dbus_uint32_t array_len;
- int i;
- int alignment;
-
- i = _DBUS_ALIGN_VALUE (*pos, 4);
-
- _dbus_demarshal_basic_type (str,
- DBUS_TYPE_UINT32,
- &array_len,
- byte_order,
- i,
- &i);
-
- alignment = _dbus_type_get_alignment (element_type);
-
- i = _DBUS_ALIGN_VALUE (i, alignment);
-
- *pos = i + array_len;
-}
-
-/**
- * Return #TRUE if the typecode is a valid typecode
- *
- * @returns #TRUE if valid
- */
-dbus_bool_t
-_dbus_type_is_valid (int typecode)
-{
- switch (typecode)
- {
- case DBUS_TYPE_BYTE:
- case DBUS_TYPE_BOOLEAN:
- case DBUS_TYPE_INT32:
- case DBUS_TYPE_UINT32:
- case DBUS_TYPE_INT64:
- case DBUS_TYPE_UINT64:
- case DBUS_TYPE_DOUBLE:
- case DBUS_TYPE_STRING:
- case DBUS_TYPE_OBJECT_PATH:
- case DBUS_TYPE_SIGNATURE:
- case DBUS_TYPE_ARRAY:
- case DBUS_TYPE_STRUCT:
- case DBUS_TYPE_VARIANT:
- return TRUE;
-
- default:
- return FALSE;
- }
-}
-
-/**
- * Gets the alignment requirement for the given type;
- * will be 1, 4, or 8.
- *
- * @param typecode the type
- * @returns alignment of 1, 4, or 8
- */
-int
-_dbus_type_get_alignment (int typecode)
-{
- switch (typecode)
- {
- case DBUS_TYPE_BYTE:
- case DBUS_TYPE_BOOLEAN:
- case DBUS_TYPE_VARIANT:
- case DBUS_TYPE_SIGNATURE:
- return 1;
- case DBUS_TYPE_INT32:
- case DBUS_TYPE_UINT32:
- /* this stuff is 4 since it starts with a length */
- case DBUS_TYPE_STRING:
- case DBUS_TYPE_OBJECT_PATH:
- case DBUS_TYPE_ARRAY:
- return 4;
- case DBUS_TYPE_INT64:
- case DBUS_TYPE_UINT64:
- case DBUS_TYPE_DOUBLE:
- /* struct is 8 since it could contain an 8-aligned item
- * and it's simpler to just always align structs to 8;
- * we want the amount of padding in a struct of a given
- * type to be predictable, not location-dependent.
- */
- case DBUS_TYPE_STRUCT:
- return 8;
-
- default:
- _dbus_assert_not_reached ("unknown typecode in _dbus_type_get_alignment()");
- return 0;
- }
-}
-
-/**
- * If in verbose mode, print a block of binary data.
- *
- * @todo right now it prints even if not in verbose mode
- *
- * @param data the data
- * @param len the length of the data
- * @param offset where to start counting for byte indexes
- */
-void
-_dbus_verbose_bytes (const unsigned char *data,
- int len,
- int offset)
-{
- int i;
- const unsigned char *aligned;
-
- _dbus_assert (len >= 0);
-
- /* Print blanks on first row if appropriate */
- aligned = _DBUS_ALIGN_ADDRESS (data, 4);
- if (aligned > data)
- aligned -= 4;
- _dbus_assert (aligned <= data);
-
- if (aligned != data)
- {
- _dbus_verbose ("%4d\t%p: ", - (data - aligned), aligned);
- while (aligned != data)
- {
- _dbus_verbose (" ");
- ++aligned;
- }
- }
-
- /* now print the bytes */
- i = 0;
- while (i < len)
- {
- if (_DBUS_ALIGN_ADDRESS (&data[i], 4) == &data[i])
- {
- _dbus_verbose ("%4d\t%p: ",
- offset + i, &data[i]);
- }
-
- if (data[i] >= 32 &&
- data[i] <= 126)
- _dbus_verbose (" '%c' ", data[i]);
- else
- _dbus_verbose ("0x%s%x ",
- data[i] <= 0xf ? "0" : "", data[i]);
-
- ++i;
-
- if (_DBUS_ALIGN_ADDRESS (&data[i], 4) == &data[i])
- {
- if (i > 3)
- _dbus_verbose ("BE: %d LE: %d",
- _dbus_unpack_uint32 (DBUS_BIG_ENDIAN, &data[i-4]),
- _dbus_unpack_uint32 (DBUS_LITTLE_ENDIAN, &data[i-4]));
-
- if (i > 7 &&
- _DBUS_ALIGN_ADDRESS (&data[i], 8) == &data[i])
- {
- _dbus_verbose (" dbl: %g",
- *(double*)&data[i-8]);
- }
-
- _dbus_verbose ("\n");
- }
- }
-
- _dbus_verbose ("\n");
-}
-
-/**
- * Dump the given part of the string to verbose log.
- *
- * @param str the string
- * @param start the start of range to dump
- * @param len length of range
- */
-void
-_dbus_verbose_bytes_of_string (const DBusString *str,
- int start,
- int len)
-{
- const char *d;
- int real_len;
-
- real_len = _dbus_string_get_length (str);
-
- _dbus_assert (start >= 0);
-
- if (start > real_len)
- {
- _dbus_verbose (" [%d,%d) is not inside string of length %d\n",
- start, len, real_len);
- return;
- }
-
- if ((start + len) > real_len)
- {
- _dbus_verbose (" [%d,%d) extends outside string of length %d\n",
- start, len, real_len);
- len = real_len - start;
- }
-
- d = _dbus_string_get_const_data_len (str, start, len);
-
- _dbus_verbose_bytes (d, len, start);
-}
-
static dbus_bool_t
marshal_4_octets (DBusString *str,
int insert_at,
@@ -889,11 +583,11 @@ marshal_4_octets (DBusString *str,
}
static dbus_bool_t
-marshal_8_octets (DBusString *str,
- int insert_at,
- DBusOctets8 value,
- int byte_order,
- int *pos_after)
+marshal_8_octets (DBusString *str,
+ int insert_at,
+ DBusBasicValue value,
+ int byte_order,
+ int *pos_after)
{
dbus_bool_t retval;
int orig_len;
@@ -933,6 +627,11 @@ marshal_len_followed_by_bytes (int marshal_as,
DBusString value_str;
int value_len;
+ _dbus_assert (byte_order == DBUS_LITTLE_ENDIAN || byte_order == DBUS_BIG_ENDIAN);
+ if (insert_at > _dbus_string_get_length (str))
+ _dbus_warn ("insert_at = %d string len = %d data_len = %d\n",
+ insert_at, _dbus_string_get_length (str), data_len);
+
if (marshal_as == MARSHAL_AS_BYTE_ARRAY)
value_len = data_len;
else
@@ -1030,15 +729,17 @@ marshal_signature (DBusString *str,
dbus_bool_t
_dbus_marshal_basic_type (DBusString *str,
int insert_at,
- char type,
+ int type,
const void *value,
int byte_order,
int *pos_after)
{
const DBusBasicValue *vp;
+ _dbus_assert (_dbus_type_is_basic (type));
+
vp = value;
-
+
switch (type)
{
case DBUS_TYPE_BYTE:
@@ -1054,23 +755,12 @@ _dbus_marshal_basic_type (DBusString *str,
return marshal_4_octets (str, insert_at, vp->u32,
byte_order, pos_after);
break;
-#ifdef DBUS_HAVE_INT64
case DBUS_TYPE_INT64:
case DBUS_TYPE_UINT64:
- {
- DBusOctets8 r;
- r.u = vp->u64;
- return marshal_8_octets (str, insert_at, r, byte_order, pos_after);
- }
- break;
-#endif /* DBUS_HAVE_INT64 */
case DBUS_TYPE_DOUBLE:
- {
- DBusOctets8 r;
- r.d = vp->dbl;
- return marshal_8_octets (str, insert_at, r, byte_order, pos_after);
- }
+ return marshal_8_octets (str, insert_at, *vp, byte_order, pos_after);
break;
+
case DBUS_TYPE_STRING:
case DBUS_TYPE_OBJECT_PATH:
return marshal_string (str, insert_at, vp->str, byte_order, pos_after);
@@ -1145,11 +835,11 @@ marshal_4_octets_array (DBusString *str,
}
static dbus_bool_t
-marshal_8_octets_array (DBusString *str,
- int insert_at,
- const DBusOctets8 *value,
- int len,
- int byte_order)
+marshal_8_octets_array (DBusString *str,
+ int insert_at,
+ const DBusBasicValue *value,
+ int len,
+ int byte_order)
{
int old_string_len;
int array_start;
@@ -1191,7 +881,7 @@ marshal_8_octets_array (DBusString *str,
#ifdef DBUS_HAVE_INT64
*((dbus_uint64_t*)d) = DBUS_UINT64_SWAP_LE_BE (*((dbus_uint64_t*)d));
#else
- swap_bytes ((unsigned char*) d, 8);
+ swap_8_bytes ((DBusBasicValue*) d);
#endif
d += 8;
}
@@ -1221,7 +911,7 @@ marshal_8_octets_array (DBusString *str,
dbus_bool_t
_dbus_marshal_basic_type_array (DBusString *str,
int insert_at,
- char element_type,
+ int element_type,
const void *value,
int len,
int byte_order,
@@ -1241,10 +931,8 @@ _dbus_marshal_basic_type_array (DBusString *str,
case DBUS_TYPE_UINT32:
return marshal_4_octets_array (str, insert_at, value, len, byte_order);
break;
-#ifdef DBUS_HAVE_INT64
case DBUS_TYPE_INT64:
case DBUS_TYPE_UINT64:
-#endif /* DBUS_HAVE_INT64 */
case DBUS_TYPE_DOUBLE:
return marshal_8_octets_array (str, insert_at, value, len, byte_order);
break;
@@ -1266,6 +954,363 @@ _dbus_marshal_basic_type_array (DBusString *str,
return FALSE;
}
+
+/**
+ * Skips over a basic type, reporting the following position.
+ *
+ * @param str the string containing the data
+ * @param type type of value to demarshal
+ * @param byte_order the byte order
+ * @param pos pointer to position in the string,
+ * updated on return to new position
+ **/
+void
+_dbus_marshal_skip_basic_type (const DBusString *str,
+ int type,
+ int byte_order,
+ int *pos)
+{
+ switch (type)
+ {
+ case DBUS_TYPE_BYTE:
+ case DBUS_TYPE_BOOLEAN:
+ (*pos)++;
+ break;
+ case DBUS_TYPE_INT32:
+ case DBUS_TYPE_UINT32:
+ *pos = _DBUS_ALIGN_VALUE (*pos, 4);
+ *pos += 4;
+ break;
+ case DBUS_TYPE_INT64:
+ case DBUS_TYPE_UINT64:
+ case DBUS_TYPE_DOUBLE:
+ *pos = _DBUS_ALIGN_VALUE (*pos, 8);
+ *pos += 8;
+ break;
+ case DBUS_TYPE_STRING:
+ case DBUS_TYPE_OBJECT_PATH:
+ {
+ int len;
+
+ len = _dbus_demarshal_uint32 (str, *pos, byte_order, pos);
+
+ *pos += len + 1; /* length plus nul */
+ }
+ break;
+ case DBUS_TYPE_SIGNATURE:
+ {
+ int len;
+
+ len = _dbus_string_get_byte (str, *pos);
+
+ *pos += len + 2; /* length byte plus length plus nul */
+ }
+ break;
+ default:
+ _dbus_warn ("type %s not a basic type\n",
+ _dbus_type_to_string (type));
+ _dbus_assert_not_reached ("not a basic type");
+ break;
+ }
+}
+
+/**
+ * Skips an array, returning the next position.
+ *
+ * @param str the string containing the data
+ * @param element_type the type of array elements
+ * @param byte_order the byte order
+ * @param pos pointer to position in the string,
+ * updated on return to new position
+ */
+void
+_dbus_marshal_skip_array (const DBusString *str,
+ int element_type,
+ int byte_order,
+ int *pos)
+{
+ dbus_uint32_t array_len;
+ int i;
+ int alignment;
+
+ i = _DBUS_ALIGN_VALUE (*pos, 4);
+
+ _dbus_demarshal_basic_type (str,
+ i,
+ DBUS_TYPE_UINT32,
+ &array_len,
+ byte_order,
+ &i);
+
+ alignment = _dbus_type_get_alignment (element_type);
+
+ i = _DBUS_ALIGN_VALUE (i, alignment);
+
+ *pos = i + array_len;
+}
+
+/**
+ * Gets the alignment requirement for the given type;
+ * will be 1, 4, or 8.
+ *
+ * @param typecode the type
+ * @returns alignment of 1, 4, or 8
+ */
+int
+_dbus_type_get_alignment (int typecode)
+{
+ switch (typecode)
+ {
+ case DBUS_TYPE_BYTE:
+ case DBUS_TYPE_BOOLEAN:
+ case DBUS_TYPE_VARIANT:
+ case DBUS_TYPE_SIGNATURE:
+ return 1;
+ case DBUS_TYPE_INT32:
+ case DBUS_TYPE_UINT32:
+ /* this stuff is 4 since it starts with a length */
+ case DBUS_TYPE_STRING:
+ case DBUS_TYPE_OBJECT_PATH:
+ case DBUS_TYPE_ARRAY:
+ return 4;
+ case DBUS_TYPE_INT64:
+ case DBUS_TYPE_UINT64:
+ case DBUS_TYPE_DOUBLE:
+ /* struct is 8 since it could contain an 8-aligned item
+ * and it's simpler to just always align structs to 8;
+ * we want the amount of padding in a struct of a given
+ * type to be predictable, not location-dependent.
+ */
+ case DBUS_TYPE_STRUCT:
+ return 8;
+
+ default:
+ _dbus_assert_not_reached ("unknown typecode in _dbus_type_get_alignment()");
+ return 0;
+ }
+}
+
+
+/**
+ * Return #TRUE if the typecode is a valid typecode.
+ * #DBUS_TYPE_INVALID surprisingly enough is not considered valid, and
+ * random unknown bytes aren't either. This function is safe with
+ * untrusted data.
+ *
+ * @returns #TRUE if valid
+ */
+dbus_bool_t
+_dbus_type_is_valid (int typecode)
+{
+ switch (typecode)
+ {
+ case DBUS_TYPE_BYTE:
+ case DBUS_TYPE_BOOLEAN:
+ case DBUS_TYPE_INT32:
+ case DBUS_TYPE_UINT32:
+ case DBUS_TYPE_INT64:
+ case DBUS_TYPE_UINT64:
+ case DBUS_TYPE_DOUBLE:
+ case DBUS_TYPE_STRING:
+ case DBUS_TYPE_OBJECT_PATH:
+ case DBUS_TYPE_SIGNATURE:
+ case DBUS_TYPE_ARRAY:
+ case DBUS_TYPE_STRUCT:
+ case DBUS_TYPE_VARIANT:
+ return TRUE;
+
+ default:
+ return FALSE;
+ }
+}
+
+#define TYPE_IS_CONTAINER(typecode) \
+ ((typecode) == DBUS_TYPE_STRUCT || \
+ (typecode) == DBUS_TYPE_VARIANT || \
+ (typecode) == DBUS_TYPE_ARRAY)
+
+/**
+ * A "container type" can contain basic types, or nested
+ * container types. #DBUS_TYPE_INVALID is not a container type.
+ * This function will crash if passed a typecode that isn't
+ * in dbus-protocol.h
+ *
+ * @returns #TRUE if type is a container
+ */
+dbus_bool_t
+_dbus_type_is_container (int typecode)
+{
+ /* only reasonable (non-line-noise) typecodes are allowed */
+ _dbus_assert (_dbus_type_is_valid (typecode) || typecode == DBUS_TYPE_INVALID);
+ return TYPE_IS_CONTAINER (typecode);
+}
+
+/**
+ * A "basic type" is a somewhat arbitrary concept, but the intent
+ * is to include those types that are fully-specified by a single
+ * typecode, with no additional type information or nested
+ * values. So all numbers and strings are basic types and
+ * structs, arrays, and variants are not basic types.
+ * #DBUS_TYPE_INVALID is not a basic type.
+ *
+ * This function is defined to return #TRUE for exactly those
+ * types that can be written with _dbus_marshal_basic_type()
+ * and read with _dbus_demarshal_basic_type().
+ *
+ * This function will crash if passed a typecode that isn't
+ * in dbus-protocol.h
+ *
+ * @returns #TRUE if type is basic
+ */
+dbus_bool_t
+_dbus_type_is_basic (int typecode)
+{
+ /* only reasonable (non-line-noise) typecodes are allowed */
+ _dbus_assert (_dbus_type_is_valid (typecode) || typecode == DBUS_TYPE_INVALID);
+
+ /* everything that isn't invalid or a container */
+ return !(typecode == DBUS_TYPE_INVALID || TYPE_IS_CONTAINER (typecode));
+}
+
+/**
+ * Tells you whether values of this type can change length if you set
+ * them to some other value. For this purpose, you assume that the
+ * first byte of the old and new value would be in the same location,
+ * so alignment padding is not a factor.
+ *
+ * @returns #TRUE if the type can occupy different lengths
+ */
+dbus_bool_t
+_dbus_type_length_varies (int typecode)
+{
+ switch (typecode)
+ {
+ case DBUS_TYPE_BYTE:
+ case DBUS_TYPE_BOOLEAN:
+ case DBUS_TYPE_INT32:
+ case DBUS_TYPE_UINT32:
+ case DBUS_TYPE_INT64:
+ case DBUS_TYPE_UINT64:
+ case DBUS_TYPE_DOUBLE:
+ return FALSE;
+ default:
+ return TRUE;
+ }
+}
+
+/**
+ * If in verbose mode, print a block of binary data.
+ *
+ * @todo right now it prints even if not in verbose mode
+ *
+ * @param data the data
+ * @param len the length of the data
+ * @param offset where to start counting for byte indexes
+ */
+void
+_dbus_verbose_bytes (const unsigned char *data,
+ int len,
+ int offset)
+{
+ int i;
+ const unsigned char *aligned;
+
+ _dbus_assert (len >= 0);
+
+ /* Print blanks on first row if appropriate */
+ aligned = _DBUS_ALIGN_ADDRESS (data, 4);
+ if (aligned > data)
+ aligned -= 4;
+ _dbus_assert (aligned <= data);
+
+ if (aligned != data)
+ {
+ _dbus_verbose ("%4d\t%p: ", - (data - aligned), aligned);
+ while (aligned != data)
+ {
+ _dbus_verbose (" ");
+ ++aligned;
+ }
+ }
+
+ /* now print the bytes */
+ i = 0;
+ while (i < len)
+ {
+ if (_DBUS_ALIGN_ADDRESS (&data[i], 4) == &data[i])
+ {
+ _dbus_verbose ("%4d\t%p: ",
+ offset + i, &data[i]);
+ }
+
+ if (data[i] >= 32 &&
+ data[i] <= 126)
+ _dbus_verbose (" '%c' ", data[i]);
+ else
+ _dbus_verbose ("0x%s%x ",
+ data[i] <= 0xf ? "0" : "", data[i]);
+
+ ++i;
+
+ if (_DBUS_ALIGN_ADDRESS (&data[i], 4) == &data[i])
+ {
+ if (i > 3)
+ _dbus_verbose ("BE: %d LE: %d",
+ _dbus_unpack_uint32 (DBUS_BIG_ENDIAN, &data[i-4]),
+ _dbus_unpack_uint32 (DBUS_LITTLE_ENDIAN, &data[i-4]));
+
+ if (i > 7 &&
+ _DBUS_ALIGN_ADDRESS (&data[i], 8) == &data[i])
+ {
+ _dbus_verbose (" dbl: %g",
+ *(double*)&data[i-8]);
+ }
+
+ _dbus_verbose ("\n");
+ }
+ }
+
+ _dbus_verbose ("\n");
+}
+
+/**
+ * Dump the given part of the string to verbose log.
+ *
+ * @param str the string
+ * @param start the start of range to dump
+ * @param len length of range
+ */
+void
+_dbus_verbose_bytes_of_string (const DBusString *str,
+ int start,
+ int len)
+{
+ const char *d;
+ int real_len;
+
+ real_len = _dbus_string_get_length (str);
+
+ _dbus_assert (start >= 0);
+
+ if (start > real_len)
+ {
+ _dbus_verbose (" [%d,%d) is not inside string of length %d\n",
+ start, len, real_len);
+ return;
+ }
+
+ if ((start + len) > real_len)
+ {
+ _dbus_verbose (" [%d,%d) extends outside string of length %d\n",
+ start, len, real_len);
+ len = real_len - start;
+ }
+
+ d = _dbus_string_get_const_data_len (str, start, len);
+
+ _dbus_verbose_bytes (d, len, start);
+}
+
/** @} */
#ifdef DBUS_BUILD_TESTS
@@ -1283,8 +1328,8 @@ _dbus_marshal_basic_type_array (DBusString *str,
#define DEMARSHAL_BASIC(typename, byte_order) \
do { \
- _dbus_demarshal_basic_type (&str, DBUS_TYPE_##typename, &v_##typename, \
- byte_order, pos, &pos); \
+ _dbus_demarshal_basic_type (&str, pos, DBUS_TYPE_##typename, &v_##typename, \
+ byte_order, &pos); \
} while (0)
#define DEMARSHAL_BASIC_AND_CHECK(typename, byte_order, literal) \
@@ -1408,6 +1453,13 @@ _dbus_marshal_test (void)
MARSHAL_TEST_STRCMP (SIGNATURE, DBUS_BIG_ENDIAN, "a(ii)");
MARSHAL_TEST_STRCMP (SIGNATURE, DBUS_LITTLE_ENDIAN, "a(ii)");
+#if 0
+
+ /*
+ * FIXME restore the set/pack tests
+ */
+
+#ifdef DBUS_HAVE_INT64
/* set/pack 64-bit integers */
_dbus_string_set_length (&str, 8);
@@ -1478,6 +1530,7 @@ _dbus_marshal_test (void)
_dbus_assert (DBUS_UINT64_CONSTANT (0x123456789abc7) ==
_dbus_unpack_uint64 (DBUS_BIG_ENDIAN,
_dbus_string_get_const_data (&str)));
+#endif /* DBUS_HAVE_INT64 */
/* set/pack 32-bit integers */
_dbus_string_set_length (&str, 4);
@@ -1550,6 +1603,8 @@ _dbus_marshal_test (void)
_dbus_unpack_uint32 (DBUS_BIG_ENDIAN,
_dbus_string_get_const_data (&str)));
+#endif /* set/pack tests for integers */
+
/* Strings in-place set */
byte_order = DBUS_LITTLE_ENDIAN;
while (TRUE)
@@ -1565,22 +1620,24 @@ _dbus_marshal_test (void)
/* Set it to something longer */
_dbus_string_init_const (&t, "Hello world foo");
- _dbus_marshal_set_string (&str, byte_order, 0,
- &t, _dbus_string_get_length (&t));
+ v_STRING = _dbus_string_get_const_data (&t);
+ _dbus_marshal_set_basic_type (&str, 0, DBUS_TYPE_STRING,
+ &v_STRING, byte_order, NULL, NULL);
- _dbus_demarshal_basic_type (&str, DBUS_TYPE_STRING,
+ _dbus_demarshal_basic_type (&str, 0, DBUS_TYPE_STRING,
&v_STRING, byte_order,
- 0, NULL);
+ NULL);
_dbus_assert (strcmp (v_STRING, "Hello world foo") == 0);
/* Set it to something shorter */
_dbus_string_init_const (&t, "Hello");
- _dbus_marshal_set_string (&str, byte_order, 0,
- &t, _dbus_string_get_length (&t));
- _dbus_demarshal_basic_type (&str, DBUS_TYPE_STRING,
+ v_STRING = _dbus_string_get_const_data (&t);
+ _dbus_marshal_set_basic_type (&str, 0, DBUS_TYPE_STRING,
+ &v_STRING, byte_order, NULL, NULL);
+ _dbus_demarshal_basic_type (&str, 0, DBUS_TYPE_STRING,
&v_STRING, byte_order,
- 0, NULL);
+ NULL);
_dbus_assert (strcmp (v_STRING, "Hello") == 0);
/* Do the other byte order */