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backends/monitor-manager: Validate EDID strings

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Some monitors return a bunch of bytes on their display descriptor
which aren't valid utf8 and thus we fail to serialize them later on
for the DisplayConfig DBus API.

Let's fall back to the stringified product code and serial number in
that case.

https://bugzilla.gnome.org/show_bug.cgi?id=752673
This commit is contained in:
Rui Matos 2015-07-16 18:41:36 +02:00
parent ad51c52b69
commit 2fb8da0d5a
1 changed files with 23 additions and 13 deletions
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36
src/backends/meta-monitor-manager.c
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@ -1416,25 +1416,35 @@ meta_output_parse_edid (MetaOutput *meta_output,
if (parsed_edid)
{
meta_output->vendor = g_strndup (parsed_edid->manufacturer_code, 4);
if (parsed_edid->dsc_product_name[0])
meta_output->product = g_strndup (parsed_edid->dsc_product_name, 14);
else
meta_output->product = g_strdup_printf ("0x%04x", (unsigned) parsed_edid->product_code);
if (parsed_edid->dsc_serial_number[0])
meta_output->serial = g_strndup (parsed_edid->dsc_serial_number, 14);
else
meta_output->serial = g_strdup_printf ("0x%08x", parsed_edid->serial_number);
if (!g_utf8_validate (meta_output->vendor, -1, NULL))
g_clear_pointer (&meta_output->vendor, g_free);
meta_output->product = g_strndup (parsed_edid->dsc_product_name, 14);
if (!g_utf8_validate (meta_output->product, -1, NULL) ||
meta_output->product[0] == '\0')
{
g_clear_pointer (&meta_output->product, g_free);
meta_output->product = g_strdup_printf ("0x%04x", (unsigned) parsed_edid->product_code);
}
meta_output->serial = g_strndup (parsed_edid->dsc_serial_number, 14);
if (!g_utf8_validate (meta_output->serial, -1, NULL) ||
meta_output->serial[0] == '\0')
{
g_clear_pointer (&meta_output->serial, g_free);
meta_output->serial = g_strdup_printf ("0x%08x", parsed_edid->serial_number);
}
g_free (parsed_edid);
}
out:
if (!meta_output->vendor)
{
meta_output->vendor = g_strdup ("unknown");
meta_output->product = g_strdup ("unknown");
meta_output->serial = g_strdup ("unknown");
}
meta_output->vendor = g_strdup ("unknown");
if (!meta_output->product)
meta_output->product = g_strdup ("unknown");
if (!meta_output->serial)
meta_output->serial = g_strdup ("unknown");
}
void