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[FREELDR]: Don't use a null pointer for strstr call.

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CORE-8198 #resolve #comment Fixed.

svn path=/trunk/; revision=66141
This commit is contained in:
Hermès Bélusca-Maïto 2015-02-01 15:10:19 +00:00
parent 434111e8b0
commit 3536a8463e
1 changed files with 13 additions and 14 deletions
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25
reactos/boot/freeldr/freeldr/windows/headless.c
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@ -242,18 +242,17 @@ WinLdrInitializeHeadlessPort(VOID)
VOID
WinLdrSetupEms(IN PCHAR BootOptions)
{
PCHAR RedirectPort;
PCHAR Settings;
/* Start fresh */
RtlZeroMemory(&LoaderRedirectionInformation, sizeof(HEADLESS_LOADER_BLOCK));
LoaderRedirectionInformation.PciDeviceId = PCI_INVALID_VENDORID;
/* Use a direction port if one was given, or use ACPI to detect one instead */
RedirectPort = strstr(BootOptions, "/redirect=");
if (RedirectPort)
Settings = strstr(BootOptions, "/redirect=");
if (Settings)
{
RedirectPort = strstr(RedirectPort, "com");
PCHAR RedirectPort = strstr(Settings, "com");
if (RedirectPort)
{
RedirectPort += sizeof("com") - 1;
@ -262,14 +261,14 @@ WinLdrSetupEms(IN PCHAR BootOptions)
}
else
{
RedirectPort = strstr(RedirectPort, "usebiossettings");
if (RedirectPort)
Settings = strstr(Settings, "usebiossettings");
if (Settings)
{
UiDrawStatusText("ACPI SRT Table Not Supported...");
}
else
{
LoaderRedirectionInformation.PortAddress = (PUCHAR)strtoul(RedirectPort, 0, 16);
LoaderRedirectionInformation.PortAddress = (PUCHAR)strtoul(Settings, 0, 16);
if (LoaderRedirectionInformation.PortAddress)
{
LoaderRedirectionInformation.PortNumber = 3;
@ -279,18 +278,18 @@ WinLdrSetupEms(IN PCHAR BootOptions)
}
/* Use a direction baudrate if one was given */
RedirectPort = strstr(BootOptions, "/redirectbaudrate=");
if (RedirectPort)
Settings = strstr(BootOptions, "/redirectbaudrate=");
if (Settings)
{
if (strstr(RedirectPort, "115200"))
if (strstr(Settings, "115200"))
{
LoaderRedirectionInformation.BaudRate = 115200;
}
else if (strstr(RedirectPort, "57600"))
else if (strstr(Settings, "57600"))
{
LoaderRedirectionInformation.BaudRate = 57600;
}
else if (strstr(RedirectPort, "19200"))
else if (strstr(Settings, "19200"))
{
LoaderRedirectionInformation.BaudRate = 19200;
}