xt-sys/exectos
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Make sure config list is not empty before trying to access it
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This commit is contained in:
Rafal Kupiec 2023-12-21 20:02:02 +01:00
parent 093ef010c8
commit 782e6e3987
Signed by: belliash
GPG Key ID: 4E829243E0CFE6B4
1 changed files with 17 additions and 13 deletions
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30
xtldr2/config.c
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@ -30,22 +30,26 @@ BlGetConfigValue(IN CONST PWCHAR ConfigName)
/* Get config entry name length */ /* Get config entry name length */
Length = RtlWideStringLength(ConfigName, 0); Length = RtlWideStringLength(ConfigName, 0);
/* Iterate through config entries */ /* Make sure config list is not empty */
ConfigListEntry = BlpConfig->Flink; if(BlpConfig != NULL)
while(ConfigListEntry != BlpConfig)
{ {
/* Get config entry */ /* Iterate through config entries */
ConfigEntry = CONTAIN_RECORD(ConfigListEntry, XTBL_CONFIG_ENTRY, Flink); ConfigListEntry = BlpConfig->Flink;
while(ConfigListEntry != BlpConfig)
/* Check if requested configuration found */
if(RtlCompareWideStringInsensitive(ConfigEntry->Name, ConfigName, Length) == 0)
{ {
/* Return config value */ /* Get config entry */
return ConfigEntry->Value; ConfigEntry = CONTAIN_RECORD(ConfigListEntry, XTBL_CONFIG_ENTRY, Flink);
}
/* Move to the next config entry */ /* Check if requested configuration found */
ConfigListEntry = ConfigListEntry->Flink; if(RtlCompareWideStringInsensitive(ConfigEntry->Name, ConfigName, Length) == 0)
{
/* Return config value */
return ConfigEntry->Value;
}
/* Move to the next config entry */
ConfigListEntry = ConfigListEntry->Flink;
}
} }
/* Config entry not found, return NULL */ /* Config entry not found, return NULL */