#define checkreturn __attribute__((warn_unused_result))
#endif
-#define NANOPB_INTERNALS
#include "pb.h"
#include "pb_decode.h"
static bool checkreturn decode_extension(pb_istream_t *stream, uint32_t tag, pb_wire_type_t wire_type, pb_field_iterator_t *iter);
static bool checkreturn find_extension_field(pb_field_iterator_t *iter);
static void pb_message_set_to_defaults(const pb_field_t fields[], void *dest_struct);
-static bool pb_dec_varint(pb_istream_t *stream, const pb_field_t *field, void *dest);
+static bool checkreturn pb_dec_varint(pb_istream_t *stream, const pb_field_t *field, void *dest);
+static bool checkreturn pb_dec_uvarint(pb_istream_t *stream, const pb_field_t *field, void *dest);
static bool checkreturn pb_dec_svarint(pb_istream_t *stream, const pb_field_t *field, void *dest);
static bool checkreturn pb_dec_fixed32(pb_istream_t *stream, const pb_field_t *field, void *dest);
static bool checkreturn pb_dec_fixed64(pb_istream_t *stream, const pb_field_t *field, void *dest);
*/
static const pb_decoder_t PB_DECODERS[PB_LTYPES_COUNT] = {
&pb_dec_varint,
+ &pb_dec_uvarint,
&pb_dec_svarint,
&pb_dec_fixed32,
&pb_dec_fixed64,
* This is an optimization for the varint decoding. */
static bool checkreturn pb_readbyte(pb_istream_t *stream, uint8_t *buf)
{
- if (!stream->bytes_left)
+ if (stream->bytes_left == 0)
PB_RETURN_ERROR(stream, "end-of-stream");
#ifndef PB_BUFFER_ONLY
if (!pb_readbyte(stream, &byte))
return false;
- if (!(byte & 0x80))
+ if ((byte & 0x80) == 0)
{
/* Quick case, 1 byte value */
result = byte;
{
prev_size *= iter->pos->array_size;
}
+ else if (PB_ATYPE(iter->pos->type) == PB_ATYPE_POINTER)
+ {
+ prev_size = sizeof(void*);
+ }
if (iter->pos->tag == 0)
return false; /* Only happens with empty message types */
{
return true;
}
- pb_field_next(iter);
+ (void)pb_field_next(iter);
} while (iter->field_index != start);
return false;
if (!pb_make_string_substream(stream, &substream))
return false;
- while (substream.bytes_left && *size < iter->pos->array_size)
+ while (substream.bytes_left > 0 && *size < iter->pos->array_size)
{
void *pItem = (uint8_t*)iter->pData + iter->pos->data_size * (*size);
if (!func(&substream, iter->pos, pItem))
}
}
+#ifdef PB_ENABLE_MALLOC
+/* Allocate storage for the field and store the pointer at iter->pData.
+ * array_size is the number of entries to reserve in an array. */
+static bool checkreturn allocate_field(pb_istream_t *stream, void *pData, size_t data_size, size_t array_size)
+{
+ void *ptr = *(void**)pData;
+ size_t size = array_size * data_size;
+
+ /* Allocate new or expand previous allocation */
+ /* Note: on failure the old pointer will remain in the structure,
+ * the message must be freed by caller also on error return. */
+ ptr = pb_realloc(ptr, size);
+ if (ptr == NULL)
+ PB_RETURN_ERROR(stream, "realloc failed");
+
+ *(void**)pData = ptr;
+ return true;
+}
+
+/* Clear a newly allocated item in case it contains a pointer, or is a submessage. */
+static void initialize_pointer_field(void *pItem, pb_field_iterator_t *iter)
+{
+ if (PB_LTYPE(iter->pos->type) == PB_LTYPE_STRING ||
+ PB_LTYPE(iter->pos->type) == PB_LTYPE_BYTES)
+ {
+ *(void**)pItem = NULL;
+ }
+ else if (PB_LTYPE(iter->pos->type) == PB_LTYPE_SUBMESSAGE)
+ {
+ pb_message_set_to_defaults((const pb_field_t *) iter->pos->ptr, pItem);
+ }
+}
+#endif
+
+static bool checkreturn decode_pointer_field(pb_istream_t *stream, pb_wire_type_t wire_type, pb_field_iterator_t *iter)
+{
+#ifndef PB_ENABLE_MALLOC
+ UNUSED(wire_type);
+ UNUSED(iter);
+ PB_RETURN_ERROR(stream, "no malloc support");
+#else
+ pb_type_t type;
+ pb_decoder_t func;
+
+ type = iter->pos->type;
+ func = PB_DECODERS[PB_LTYPE(type)];
+
+ switch (PB_HTYPE(type))
+ {
+ case PB_HTYPE_REQUIRED:
+ case PB_HTYPE_OPTIONAL:
+ if (PB_LTYPE(type) == PB_LTYPE_STRING ||
+ PB_LTYPE(type) == PB_LTYPE_BYTES)
+ {
+ return func(stream, iter->pos, iter->pData);
+ }
+ else
+ {
+ if (!allocate_field(stream, iter->pData, iter->pos->data_size, 1))
+ return false;
+
+ initialize_pointer_field(*(void**)iter->pData, iter);
+ return func(stream, iter->pos, *(void**)iter->pData);
+ }
+
+ case PB_HTYPE_REPEATED:
+ if (wire_type == PB_WT_STRING
+ && PB_LTYPE(type) <= PB_LTYPE_LAST_PACKABLE)
+ {
+ /* Packed array, multiple items come in at once. */
+ bool status = true;
+ size_t *size = (size_t*)iter->pSize;
+ size_t allocated_size = *size;
+ void *pItem;
+ pb_istream_t substream;
+
+ if (!pb_make_string_substream(stream, &substream))
+ return false;
+
+ while (substream.bytes_left)
+ {
+ if (*size + 1 > allocated_size)
+ {
+ /* Allocate more storage. This tries to guess the
+ * number of remaining entries. Round the division
+ * upwards. */
+ allocated_size += (substream.bytes_left - 1) / iter->pos->data_size + 1;
+
+ if (!allocate_field(&substream, iter->pData, iter->pos->data_size, allocated_size))
+ {
+ status = false;
+ break;
+ }
+ }
+
+ /* Decode the array entry */
+ pItem = *(uint8_t**)iter->pData + iter->pos->data_size * (*size);
+ initialize_pointer_field(pItem, iter);
+ if (!func(&substream, iter->pos, pItem))
+ {
+ status = false;
+ break;
+ }
+ (*size)++;
+ }
+ pb_close_string_substream(stream, &substream);
+
+ return status;
+ }
+ else
+ {
+ /* Normal repeated field, i.e. only one item at a time. */
+ size_t *size = (size_t*)iter->pSize;
+ void *pItem;
+
+ (*size)++;
+ if (!allocate_field(stream, iter->pData, iter->pos->data_size, *size))
+ return false;
+
+ pItem = *(uint8_t**)iter->pData + iter->pos->data_size * (*size - 1);
+ initialize_pointer_field(pItem, iter);
+ return func(stream, iter->pos, pItem);
+ }
+
+ default:
+ PB_RETURN_ERROR(stream, "invalid field type");
+ }
+#endif
+}
+
static bool checkreturn decode_callback_field(pb_istream_t *stream, pb_wire_type_t wire_type, pb_field_iterator_t *iter)
{
pb_callback_t *pCallback = (pb_callback_t*)iter->pData;
case PB_ATYPE_STATIC:
return decode_static_field(stream, wire_type, iter);
+ case PB_ATYPE_POINTER:
+ return decode_pointer_field(stream, wire_type, iter);
+
case PB_ATYPE_CALLBACK:
return decode_callback_field(stream, wire_type, iter);
{
const pb_field_t *field = (const pb_field_t*)extension->type->arg;
pb_field_iterator_t iter;
- bool dummy;
if (field->tag != tag)
return true;
iter.required_field_index = 0;
iter.dest_struct = extension->dest;
iter.pData = extension->dest;
- iter.pSize = &dummy;
+ iter.pSize = &extension->found;
return decode_field(stream, wire_type, &iter);
}
pb_extension_t *extension = *(pb_extension_t* const *)iter->pData;
size_t pos = stream->bytes_left;
- while (extension && pos == stream->bytes_left)
+ while (extension != NULL && pos == stream->bytes_left)
{
bool status;
if (extension->type->decode)
do {
if (PB_LTYPE(iter->pos->type) == PB_LTYPE_EXTENSION)
return true;
- pb_field_next(iter);
+ (void)pb_field_next(iter);
} while (iter->field_index != start);
return false;
pb_field_iterator_t iter;
pb_field_init(&iter, fields, dest_struct);
- /* Initialize size/has fields and apply default values */
do
{
pb_type_t type;
type = iter.pos->type;
+ /* Avoid crash on empty message types (zero fields) */
if (iter.pos->tag == 0)
continue;
if (PB_ATYPE(type) == PB_ATYPE_STATIC)
{
- /* Initialize the size field for optional/repeated fields to 0. */
if (PB_HTYPE(type) == PB_HTYPE_OPTIONAL)
{
+ /* Set has_field to false. Still initialize the optional field
+ * itself also. */
*(bool*)iter.pSize = false;
}
else if (PB_HTYPE(type) == PB_HTYPE_REPEATED)
{
+ /* Set array count to 0, no need to initialize contents. */
*(size_t*)iter.pSize = 0;
- continue; /* Array is empty, no need to initialize contents */
+ continue;
}
- /* Initialize field contents to default value */
if (PB_LTYPE(iter.pos->type) == PB_LTYPE_SUBMESSAGE)
{
+ /* Initialize submessage to defaults */
pb_message_set_to_defaults((const pb_field_t *) iter.pos->ptr, iter.pData);
}
else if (iter.pos->ptr != NULL)
{
+ /* Initialize to default value */
memcpy(iter.pData, iter.pos->ptr, iter.pos->data_size);
}
else
{
+ /* Initialize to zeros */
memset(iter.pData, 0, iter.pos->data_size);
}
}
+ else if (PB_ATYPE(type) == PB_ATYPE_POINTER)
+ {
+ /* Initialize the pointer to NULL. */
+ *(void**)iter.pData = NULL;
+
+ /* Initialize array count to 0. */
+ if (PB_HTYPE(type) == PB_HTYPE_REPEATED)
+ {
+ *(size_t*)iter.pSize = 0;
+ }
+ }
else if (PB_ATYPE(type) == PB_ATYPE_CALLBACK)
{
- continue; /* Don't overwrite callback */
+ /* Don't overwrite callback */
}
} while (pb_field_next(&iter));
}
bool checkreturn pb_decode_noinit(pb_istream_t *stream, const pb_field_t fields[], void *dest_struct)
{
- uint8_t fields_seen[(PB_MAX_REQUIRED_FIELDS + 7) / 8] = {0}; /* Used to check for required fields */
+ uint8_t fields_seen[(PB_MAX_REQUIRED_FIELDS + 7) / 8] = {0, 0, 0, 0, 0, 0, 0, 0};
uint32_t extension_range_start = 0;
pb_field_iterator_t iter;
} while (pb_field_next(&iter));
/* Fixup if last field was also required. */
- if (PB_HTYPE(last_type) == PB_HTYPE_REQUIRED && iter.pos->tag)
+ if (PB_HTYPE(last_type) == PB_HTYPE_REQUIRED && iter.pos->tag != 0)
req_field_count++;
/* Check the whole bytes */
bool checkreturn pb_decode(pb_istream_t *stream, const pb_field_t fields[], void *dest_struct)
{
+ bool status;
pb_message_set_to_defaults(fields, dest_struct);
- return pb_decode_noinit(stream, fields, dest_struct);
+ status = pb_decode_noinit(stream, fields, dest_struct);
+
+#ifdef PB_ENABLE_MALLOC
+ if (!status)
+ pb_release(fields, dest_struct);
+#endif
+
+ return status;
}
bool pb_decode_delimited(pb_istream_t *stream, const pb_field_t fields[], void *dest_struct)
return status;
}
+#ifdef PB_ENABLE_MALLOC
+void pb_release(const pb_field_t fields[], void *dest_struct)
+{
+ pb_field_iterator_t iter;
+ pb_field_init(&iter, fields, dest_struct);
+
+ do
+ {
+ pb_type_t type;
+ type = iter.pos->type;
+
+ /* Avoid crash on empty message types (zero fields) */
+ if (iter.pos->tag == 0)
+ continue;
+
+ if (PB_ATYPE(type) == PB_ATYPE_POINTER)
+ {
+ if (PB_HTYPE(type) == PB_HTYPE_REPEATED &&
+ (PB_LTYPE(type) == PB_LTYPE_STRING ||
+ PB_LTYPE(type) == PB_LTYPE_BYTES))
+ {
+ /* Release entries in repeated string or bytes array */
+ void **pItem = *(void***)iter.pData;
+ size_t count = *(size_t*)iter.pSize;
+ while (count--)
+ {
+ pb_free(*pItem);
+ *pItem++ = NULL;
+ }
+ }
+ else if (PB_LTYPE(type) == PB_LTYPE_SUBMESSAGE)
+ {
+ /* Release fields in submessages */
+ void *pItem = *(void**)iter.pData;
+ size_t count = (pItem ? 1 : 0);
+
+ if (PB_HTYPE(type) == PB_HTYPE_REPEATED)
+ {
+ count = *(size_t*)iter.pSize;
+ }
+
+ while (count--)
+ {
+ pb_release((const pb_field_t*)iter.pos->ptr, pItem);
+ pItem = (uint8_t*)pItem + iter.pos->data_size;
+ }
+ }
+
+ /* Release main item */
+ pb_free(*(void**)iter.pData);
+ *(void**)iter.pData = NULL;
+ }
+ } while (pb_field_next(&iter));
+}
+#endif
+
/* Field decoders */
bool pb_decode_svarint(pb_istream_t *stream, int64_t *dest)
#endif
}
-bool checkreturn pb_dec_varint(pb_istream_t *stream, const pb_field_t *field, void *dest)
+static bool checkreturn pb_dec_varint(pb_istream_t *stream, const pb_field_t *field, void *dest)
+{
+ uint64_t value;
+ if (!pb_decode_varint(stream, &value))
+ return false;
+
+ switch (field->data_size)
+ {
+ case 1: *(int8_t*)dest = (int8_t)value; break;
+ case 2: *(int16_t*)dest = (int16_t)value; break;
+ case 4: *(int32_t*)dest = (int32_t)value; break;
+ case 8: *(int64_t*)dest = (int64_t)value; break;
+ default: PB_RETURN_ERROR(stream, "invalid data_size");
+ }
+
+ return true;
+}
+
+static bool checkreturn pb_dec_uvarint(pb_istream_t *stream, const pb_field_t *field, void *dest)
{
uint64_t value;
if (!pb_decode_varint(stream, &value))
switch (field->data_size)
{
- case 1: *(uint8_t*)dest = (uint8_t)value; break;
- case 2: *(uint16_t*)dest = (uint16_t)value; break;
case 4: *(uint32_t*)dest = (uint32_t)value; break;
case 8: *(uint64_t*)dest = value; break;
default: PB_RETURN_ERROR(stream, "invalid data_size");
return true;
}
-bool checkreturn pb_dec_svarint(pb_istream_t *stream, const pb_field_t *field, void *dest)
+static bool checkreturn pb_dec_svarint(pb_istream_t *stream, const pb_field_t *field, void *dest)
{
int64_t value;
if (!pb_decode_svarint(stream, &value))
return true;
}
-bool checkreturn pb_dec_fixed32(pb_istream_t *stream, const pb_field_t *field, void *dest)
+static bool checkreturn pb_dec_fixed32(pb_istream_t *stream, const pb_field_t *field, void *dest)
{
UNUSED(field);
return pb_decode_fixed32(stream, dest);
}
-bool checkreturn pb_dec_fixed64(pb_istream_t *stream, const pb_field_t *field, void *dest)
+static bool checkreturn pb_dec_fixed64(pb_istream_t *stream, const pb_field_t *field, void *dest)
{
UNUSED(field);
return pb_decode_fixed64(stream, dest);
}
-bool checkreturn pb_dec_bytes(pb_istream_t *stream, const pb_field_t *field, void *dest)
+static bool checkreturn pb_dec_bytes(pb_istream_t *stream, const pb_field_t *field, void *dest)
{
- pb_bytes_array_t *x = (pb_bytes_array_t*)dest;
+ uint32_t size;
+ pb_bytes_array_t *bdest;
- uint32_t temp;
- if (!pb_decode_varint32(stream, &temp))
+ if (!pb_decode_varint32(stream, &size))
return false;
- x->size = temp;
- /* Check length, noting the space taken by the size_t header. */
- if (x->size > field->data_size - offsetof(pb_bytes_array_t, bytes))
- PB_RETURN_ERROR(stream, "bytes overflow");
+ if (PB_ATYPE(field->type) == PB_ATYPE_POINTER)
+ {
+#ifndef PB_ENABLE_MALLOC
+ PB_RETURN_ERROR(stream, "no malloc support");
+#else
+ if (!allocate_field(stream, dest, PB_BYTES_ARRAY_T_ALLOCSIZE(size), 1))
+ return false;
+ bdest = *(pb_bytes_array_t**)dest;
+#endif
+ }
+ else
+ {
+ if (PB_BYTES_ARRAY_T_ALLOCSIZE(size) > field->data_size)
+ PB_RETURN_ERROR(stream, "bytes overflow");
+ bdest = (pb_bytes_array_t*)dest;
+ }
- return pb_read(stream, x->bytes, x->size);
+ bdest->size = size;
+ return pb_read(stream, bdest->bytes, size);
}
-bool checkreturn pb_dec_string(pb_istream_t *stream, const pb_field_t *field, void *dest)
+static bool checkreturn pb_dec_string(pb_istream_t *stream, const pb_field_t *field, void *dest)
{
uint32_t size;
+ size_t alloc_size;
bool status;
if (!pb_decode_varint32(stream, &size))
return false;
- /* Check length, noting the null terminator */
- if (size + 1 > field->data_size)
- PB_RETURN_ERROR(stream, "string overflow");
+ /* Space for null terminator */
+ alloc_size = size + 1;
+
+ if (PB_ATYPE(field->type) == PB_ATYPE_POINTER)
+ {
+#ifndef PB_ENABLE_MALLOC
+ PB_RETURN_ERROR(stream, "no malloc support");
+#else
+ if (!allocate_field(stream, dest, alloc_size, 1))
+ return false;
+ dest = *(void**)dest;
+#endif
+ }
+ else
+ {
+ if (alloc_size > field->data_size)
+ PB_RETURN_ERROR(stream, "string overflow");
+ }
status = pb_read(stream, (uint8_t*)dest, size);
*((uint8_t*)dest + size) = 0;
return status;
}
-bool checkreturn pb_dec_submessage(pb_istream_t *stream, const pb_field_t *field, void *dest)
+static bool checkreturn pb_dec_submessage(pb_istream_t *stream, const pb_field_t *field, void *dest)
{
bool status;
pb_istream_t substream;
Code Review / apps / agl-service-can-low-level.git / blobdiff