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uefi: Fix crash when the product name is NULL

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...bad things happen when you try to free a const char...
This commit is contained in:
Richard Hughes 2017-07-06 09:56:11 +01:00
parent c1a4bd469d
commit 79acb58c7e
1 changed files with 28 additions and 34 deletions
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62
plugins/uefi/fu-plugin-uefi.c
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@ -273,6 +273,22 @@ fu_plugin_unlock (FuPlugin *plugin,
#endif
}
static const gchar *
fu_plugin_uefi_uefi_type_to_string (guint32 uefi_type)
{
if (uefi_type == FWUP_RESOURCE_TYPE_UNKNOWN)
return "Unknown Firmware";
if (uefi_type == FWUP_RESOURCE_TYPE_SYSTEM_FIRMWARE)
return "System Firmware";
if (uefi_type == FWUP_RESOURCE_TYPE_DEVICE_FIRMWARE)
return "Device Firmware";
if (uefi_type == FWUP_RESOURCE_TYPE_UEFI_DRIVER)
return "UEFI Driver";
if (uefi_type == FWUP_RESOURCE_TYPE_FMP)
return "Firmware Management Protocol";
return NULL;
}
gboolean
fu_plugin_coldplug (FuPlugin *plugin, GError **error)
{
@ -330,48 +346,26 @@ fu_plugin_coldplug (FuPlugin *plugin, GError **error)
guid = g_strdup ("00000000-0000-0000-0000-000000000000");
parse_flags = fu_plugin_uefi_get_version_format ();
while (fwup_resource_iter_next (iter, &re) > 0) {
const gchar *uefi_type_str = NULL;
efi_guid_t *guid_raw;
guint32 uefi_type;
guint32 version_raw;
guint64 hardware_instance = 0; /* FIXME */
g_autofree gchar *id = NULL;
g_autofree gchar *version = NULL;
g_autofree gchar *version_lowest = NULL;
g_autofree gchar *display_name = NULL;
guint32 uefi_type;
const gchar *uefi_type_str = NULL;
g_autoptr(GString) display_name = g_string_new (NULL);
/* set up proper DisplayName */
fwup_get_fw_type(re, &uefi_type);
switch (uefi_type) {
case FWUP_RESOURCE_TYPE_UNKNOWN:
uefi_type_str = "Unknown Firmware";
break;
case FWUP_RESOURCE_TYPE_SYSTEM_FIRMWARE:
uefi_type_str = "System Firmware";
break;
case FWUP_RESOURCE_TYPE_DEVICE_FIRMWARE:
uefi_type_str = "Device Firmware";
break;
case FWUP_RESOURCE_TYPE_UEFI_DRIVER:
uefi_type_str = "UEFI Driver";
break;
case FWUP_RESOURCE_TYPE_FMP:
uefi_type_str = "Firmware Management Protocol";
break;
default:
break;
}
fwup_get_fw_type (re, &uefi_type);
if (product_name != NULL)
g_string_append (display_name, product_name);
uefi_type_str = fu_plugin_uefi_uefi_type_to_string (uefi_type);
if (uefi_type_str != NULL) {
if (product_name != NULL)
display_name = g_strconcat (product_name,
" ",
uefi_type_str,
NULL);
else
display_name = uefi_type_str;
if (display_name->len > 0)
g_string_append (display_name, " ");
g_string_append (display_name, uefi_type_str);
}
else
display_name = product_name;
/* convert to strings */
fwup_get_guid (re, &guid_raw);
@ -389,8 +383,8 @@ fu_plugin_coldplug (FuPlugin *plugin, GError **error)
fu_device_set_id (dev, id);
fu_device_add_guid (dev, guid);
fu_device_set_version (dev, version);
if (display_name != NULL)
fu_device_set_name(dev, display_name);
if (display_name->len > 0)
fu_device_set_name(dev, display_name->str);
fwup_get_lowest_supported_fw_version (re, &version_raw);
if (version_raw != 0) {
version_lowest = as_utils_version_from_uint32 (version_raw,