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girnode: Improve int types in GIIrNodeField

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`GIIrNodeField` is built dynamically at runtime (rather than being
mmapped from disk), so its types can accurately reflect their runtime
semantics, rather than an on-disk format.

As part of this, switch from `atoi()` to `g_ascii_string_to_unsigned()`
for parsing the relevant fields from a GIR XML file. This means we now
get error handling for invalid integers.

This also includes some offset validity changes which were forgotten
from commit 515b3fc1dc.

Signed-off-by: Philip Withnall <pwithnall@gnome.org>

Helps: #3155
This commit is contained in:
Philip Withnall
2024-01-26 09:20:07 +00:00
parent 48d9f356c3
commit 501ff95cea
4 changed files with 18 additions and 7 deletions
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5
girepository/girnode-private.h
View File

@@ -252,8 +252,9 @@ struct _GIIrNodeField
uint8_t readable : 1;
uint8_t writable : 1;
int bits;
int offset;
unsigned int bits;
size_t offset;
GIIrOffsetsState offset_state;
GIIrNodeFunction *callback; /* (owned) */
GIIrNodeType *type; /* (owned) */

2
girepository/girnode.c
View File

@@ -1601,7 +1601,7 @@ gi_ir_node_build_typelib (GIIrNode *node,
blob->writable = field->writable;
blob->reserved = 0;
blob->bits = 0;
if (field->offset >= 0)
if (field->offset_state == GI_IR_OFFSETS_COMPUTED)
blob->struct_offset = field->offset;
else
blob->struct_offset = 0xFFFF; /* mark as unknown */

6
girepository/giroffsets.c
View File

@@ -392,6 +392,7 @@ compute_struct_field_offsets (GIIrTypelibBuild *build,
size = GI_ALIGN (size, member_alignment);
alignment = MAX (alignment, member_alignment);
field->offset = size;
field->offset_state = GI_IR_OFFSETS_COMPUTED;
size += member_size;
}
else
@@ -399,7 +400,10 @@ compute_struct_field_offsets (GIIrTypelibBuild *build,
}
if (have_error)
field->offset = -1;
{
field->offset = 0;
field->offset_state = GI_IR_OFFSETS_FAILED;
}
}
else if (member->type == GI_IR_NODE_CALLBACK)
{

12
girepository/girparser.c
View File

@@ -1366,6 +1366,7 @@ start_field (GMarkupParseContext *context,
GIIrNodeField *field;
ParseState target_state;
gboolean introspectable;
guint64 parsed_bits;
switch (ctx->state)
{
@@ -1428,10 +1429,15 @@ start_field (GMarkupParseContext *context,
field->readable = readable == NULL || strcmp (readable, "0") == 0;
field->writable = writable != NULL && strcmp (writable, "1") == 0;
if (bits)
field->bits = atoi (bits);
else
if (bits == NULL)
field->bits = 0;
else if (g_ascii_string_to_unsigned (bits, 10, 0, G_MAXUINT, &parsed_bits, error))
field->bits = parsed_bits;
else
{
gi_ir_node_free ((GIIrNode *) field);
return FALSE;
}
switch (CURRENT_NODE (ctx)->type)
{