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protobuf_c_unpack_message():

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Insist that required fields be represented in the packed message.


git-svn-id: https://protobuf-c.googlecode.com/svn/trunk@242 00440858-1255-0410-a3e6-75ea37f81c3a
This commit is contained in:
lahiker42 2010-08-25 21:16:10 +00:00
parent 45d9ee4679
commit e30ec5f71e
2 changed files with 30 additions and 5 deletions
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4
ChangeLog
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@ -5,7 +5,9 @@
- bug in dsk_dispatch_close_fd(), which usually only
showed up in later function calls.
- support for deprecated fields -- enable a GCC warning
if a field has the "deprecated" option enabled. (Andrey Nigmatulin)
if a field has the "deprecated" option enabled. (Andrei Nigmatulin)
- fix for protobuf_c_message_unpack() to issue error if any "required" field
is missing in input stream. (Andrei Nigmatulin)
0.13:
- Fix for when the number of connections gets too great in RPC.

31
src/google/protobuf-c/protobuf-c.c
View File

@ -2103,11 +2103,20 @@ protobuf_c_message_unpack (const ProtobufCMessageDescriptor *desc,
size_t n_unknown = 0;
unsigned f;
unsigned i_slab;
unsigned last_field_index = 0;
unsigned long *required_fields_bitmap;
unsigned required_fields_bitmap_len;
static const unsigned word_bits = sizeof(long) * 8;
ASSERT_IS_MESSAGE_DESCRIPTOR (desc);
if (allocator == NULL)
allocator = &protobuf_c_default_allocator;
required_fields_bitmap_len = (desc->n_fields + word_bits - 1) / word_bits;
required_fields_bitmap = alloca(required_fields_bitmap_len * sizeof(long));
memset(required_fields_bitmap, 0, required_fields_bitmap_len * sizeof(long));
DO_ALLOC (rv, allocator, desc->sizeof_message, return NULL);
scanned_member_slabs[0] = first_member_slab;
@ -2150,11 +2159,15 @@ protobuf_c_message_unpack (const ProtobufCMessageDescriptor *desc,
{
field = desc->fields + field_index;
last_field = field;
last_field_index = field_index;
}
}
else
field = last_field;
if (field != NULL && field->label == PROTOBUF_C_LABEL_REQUIRED)
required_fields_bitmap[last_field_index / word_bits] |= (1UL << (last_field_index % word_bits));
at += used;
rem -= used;
tmp.tag = tag;
@ -2258,11 +2271,12 @@ protobuf_c_message_unpack (const ProtobufCMessageDescriptor *desc,
rem -= tmp.len;
}
/* allocate space for repeated fields */
/* allocate space for repeated fields, also check that all required fields have been set */
for (f = 0; f < desc->n_fields; f++)
if (desc->fields[f].label == PROTOBUF_C_LABEL_REPEATED)
{
const ProtobufCFieldDescriptor *field = desc->fields + f;
{
const ProtobufCFieldDescriptor *field = desc->fields + f;
if (field->label == PROTOBUF_C_LABEL_REPEATED)
{
size_t siz = sizeof_elt_in_repeated_array (field->type);
size_t *n_ptr = STRUCT_MEMBER_PTR (size_t, rv, field->quantifier_offset);
if (*n_ptr != 0)
@ -2282,7 +2296,16 @@ protobuf_c_message_unpack (const ProtobufCMessageDescriptor *desc,
CLEAR_REMAINING_N_PTRS (); goto error_cleanup);
#undef CLEAR_REMAINING_N_PTRS
}
}
else if (field->label == PROTOBUF_C_LABEL_REQUIRED)
{
if (field->default_value == NULL && 0 == (required_fields_bitmap[f / word_bits] & (1UL << (f % word_bits))))
{
UNPACK_ERROR (("message '%s': missing required field '%s'", desc->name, field->name));
goto error_cleanup;
}
}
}
/* allocate space for unknown fields */
if (n_unknown)