/** @file
Helper functions for configuring or getting the parameters relating to HTTP Boot.
Copyright (c) 2016, Intel Corporation. All rights reserved.<BR>
This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
which accompanies this distribution. The full text of the license may be found at
http://opensource.org/licenses/bsd-license.php
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
**/
#include "HttpBootDxe.h"
#include <Library/UefiBootManagerLib.h>
CHAR16 mHttpBootConfigStorageName[] = L"HTTP_BOOT_CONFIG_IFR_NVDATA";
/**
Add new boot option for HTTP boot.
@param[in] Private Pointer to the driver private data.
@param[in] UsingIpv6 Set to TRUE if creating boot option for IPv6.
@param[in] Description The description text of the boot option.
@param[in] Uri The URI string of the boot file.
@retval EFI_SUCCESS The boot option is created successfully.
@retval Others Failed to create new boot option.
**/
EFI_STATUS
HttpBootAddBootOption (
IN HTTP_BOOT_PRIVATE_DATA *Private,
IN BOOLEAN UsingIpv6,
IN CHAR16 *Description,
IN CHAR16 *Uri
)
{
EFI_DEV_PATH *Node;
EFI_DEVICE_PATH_PROTOCOL *TmpDevicePath;
EFI_DEVICE_PATH_PROTOCOL *NewDevicePath;
UINTN Length;
CHAR8 AsciiUri[URI_STR_MAX_SIZE];
EFI_STATUS Status;
UINTN Index;
EFI_BOOT_MANAGER_LOAD_OPTION NewOption;
NewDevicePath = NULL;
Node = NULL;
TmpDevicePath = NULL;
if (StrLen (Description) == 0) {
return EFI_INVALID_PARAMETER;
}
//
// Convert the scheme to all lower case.
//
for (Index = 0; Index < StrLen (Uri); Index++) {
if (Uri[Index] == L':') {
break;
}
if (Uri[Index] >= L'A' && Uri[Index] <= L'Z') {
Uri[Index] -= (CHAR16)(L'A' - L'a');
}
}
//
// Only accept empty URI, or http and https URI.
//
if ((StrLen (Uri) != 0) && (StrnCmp (Uri, L"http://", 7) != 0) && (StrnCmp (Uri, L"https://", 8) != 0)) {
return EFI_INVALID_PARAMETER;
}
//
// Create a new device path by appending the IP node and URI node to
// the driver's parent device path
//
if (!UsingIpv6) {
Node = AllocateZeroPool (sizeof (IPv4_DEVICE_PATH));
if (Node == NULL) {
Status = EFI_OUT_OF_RESOURCES;
goto ON_EXIT;
}
Node->Ipv4.Header.Type = MESSAGING_DEVICE_PATH;
Node->Ipv4.Header.SubType = MSG_IPv4_DP;
SetDevicePathNodeLength (Node, sizeof (IPv4_DEVICE_PATH));
} else {
Node = AllocateZeroPool (sizeof (IPv6_DEVICE_PATH));
if (Node == NULL) {
Status = EFI_OUT_OF_RESOURCES;
goto ON_EXIT;
}
Node->Ipv6.Header.Type = MESSAGING_DEVICE_PATH;
Node->Ipv6.Header.SubType = MSG_IPv6_DP;
SetDevicePathNodeLength (Node, sizeof (IPv6_DEVICE_PATH));
}
TmpDevicePath = AppendDevicePathNode (Private->ParentDevicePath, (EFI_DEVICE_PATH_PROTOCOL*) Node);
FreePool (Node);
if (TmpDevicePath == NULL) {
return EFI_OUT_OF_RESOURCES;
}
//
// Update the URI node with the input boot file URI.
//
UnicodeStrToAsciiStrS (Uri, AsciiUri, sizeof (AsciiUri));
Length = sizeof (EFI_DEVICE_PATH_PROTOCOL) + AsciiStrSize (AsciiUri);
Node = AllocatePool (Length);
if (Node == NULL) {
Status = EFI_OUT_OF_RESOURCES;
FreePool (TmpDevicePath);
goto ON_EXIT;
}
Node->DevPath.Type = MESSAGING_DEVICE_PATH;
Node->DevPath.SubType = MSG_URI_DP;
SetDevicePathNodeLength (Node, Length);
CopyMem ((UINT8*) Node + sizeof (EFI_DEVICE_PATH_PROTOCOL), AsciiUri, AsciiStrSize (AsciiUri));
NewDevicePath = AppendDevicePathNode (TmpDevicePath, (EFI_DEVICE_PATH_PROTOCOL*) Node);
FreePool (Node);
FreePool (TmpDevicePath);
if (NewDevicePath == NULL) {
Status = EFI_OUT_OF_RESOURCES;
goto ON_EXIT;
}
//
// Add a new load option.
//
Status = EfiBootManagerInitializeLoadOption (
&NewOption,
LoadOptionNumberUnassigned,
LoadOptionTypeBoot,
LOAD_OPTION_ACTIVE,
Description,
NewDevicePath,
NULL,
0
);
if (EFI_ERROR (Status)) {
goto ON_EXIT;
}
Status = EfiBootManagerAddLoadOptionVariable (&NewOption, (UINTN) -1);
EfiBootManagerFreeLoadOption (&NewOption);
ON_EXIT:
if (NewDevicePath != NULL) {
FreePool (NewDevicePath);
}
return Status;
}
/**
This function allows the caller to request the current
configuration for one or more named elements. The resulting
string is in <ConfigAltResp> format. Also, any and all alternative
configuration strings shall be appended to the end of the
current configuration string. If they are, they must appear
after the current configuration. They must contain the same
routing (GUID, NAME, PATH) as the current configuration string.
They must have an additional description indicating the type of
alternative configuration the string represents,
"ALTCFG=<StringToken>". That <StringToken> (when
converted from Hex UNICODE to binary) is a reference to a
string in the associated string pack.
@param[in] This Points to the EFI_HII_CONFIG_ACCESS_PROTOCOL.
@param[in] Request A null-terminated Unicode string in
<ConfigRequest> format. Note that this
includes the routing information as well as
the configurable name / value pairs. It is
invalid for this string to be in
<MultiConfigRequest> format.
@param[out] Progress On return, points to a character in the
Request string. Points to the string's null
terminator if request was successful. Points
to the most recent "&" before the first
failing name / value pair (or the beginning
of the string if the failure is in the first
name / value pair) if the request was not successful.
@param[out] Results A null-terminated Unicode string in
<ConfigAltResp> format which has all values
filled in for the names in the Request string.
String to be allocated by the called function.
@retval EFI_SUCCESS The Results string is filled with the
values corresponding to all requested
names.
@retval EFI_OUT_OF_RESOURCES Not enough memory to store the
parts of the results that must be
stored awaiting possible future
protocols.
@retval EFI_INVALID_PARAMETER For example, passing in a NULL
for the Request parameter
would result in this type of
error. In this case, the
Progress parameter would be
set to NULL.
@retval EFI_NOT_FOUND Routing data doesn't match any
known driver. Progress set to the
first character in the routing header.
Note: There is no requirement that the
driver validate the routing data. It
must skip the <ConfigHdr> in order to
process the names.
@retval EFI_INVALID_PARAMETER Illegal syntax. Progress set
to most recent "&" before the
error or the beginning of the
string.
@retval EFI_INVALID_PARAMETER Unknown name. Progress points
to the & before the name in
question.
**/
EFI_STATUS
EFIAPI
HttpBootFormExtractConfig (
IN CONST EFI_HII_CONFIG_ACCESS_PROTOCOL *This,
IN CONST EFI_STRING Request,
OUT EFI_STRING *Progress,
OUT EFI_STRING *Results
)
{
EFI_STATUS Status;
UINTN BufferSize;
HTTP_BOOT_FORM_CALLBACK_INFO *CallbackInfo;
EFI_STRING ConfigRequestHdr;
EFI_STRING ConfigRequest;
BOOLEAN AllocatedRequest;
UINTN Size;
if (Progress == NULL || Results == NULL) {
return EFI_INVALID_PARAMETER;
}
*Progress = Request;
if ((Request != NULL) && !HiiIsConfigHdrMatch (Request, &gHttpBootConfigGuid, mHttpBootConfigStorageName)) {
return EFI_NOT_FOUND;
}
ConfigRequestHdr = NULL;
ConfigRequest = NULL;
AllocatedRequest = FALSE;
Size = 0;
CallbackInfo = HTTP_BOOT_FORM_CALLBACK_INFO_FROM_CONFIG_ACCESS (This);
//
// Convert buffer data to <ConfigResp> by helper function BlockToConfig()
//
BufferSize = sizeof (HTTP_BOOT_CONFIG_IFR_NVDATA);
ZeroMem (&CallbackInfo->HttpBootNvData, BufferSize);
StrCpyS (CallbackInfo->HttpBootNvData.Description, DESCRIPTION_STR_MAX_SIZE / sizeof (CHAR16), HTTP_BOOT_DEFAULT_DESCRIPTION_STR);
ConfigRequest = Request;
if ((Request == NULL) || (StrStr (Request, L"OFFSET") == NULL)) {
//
// Request has no request element, construct full request string.
// Allocate and fill a buffer large enough to hold the <ConfigHdr> template
// followed by "&OFFSET=0&WIDTH=WWWWWWWWWWWWWWWW" followed by a Null-terminator
//
ConfigRequestHdr = HiiConstructConfigHdr (&gHttpBootConfigGuid, mHttpBootConfigStorageName, CallbackInfo->ChildHandle);
Size = (StrLen (ConfigRequestHdr) + 32 + 1) * sizeof (CHAR16);
ConfigRequest = AllocateZeroPool (Size);
if (ConfigRequest == NULL) {
return EFI_OUT_OF_RESOURCES;
}
AllocatedRequest = TRUE;
UnicodeSPrint (ConfigRequest, Size, L"%s&OFFSET=0&WIDTH=%016LX", ConfigRequestHdr, (UINT64)BufferSize);
FreePool (ConfigRequestHdr);
}
Status = gHiiConfigRouting->BlockToConfig (
gHiiConfigRouting,
ConfigRequest,
(UINT8 *) &CallbackInfo->HttpBootNvData,
BufferSize,
Results,
Progress
);
//
// Free the allocated config request string.
//
if (AllocatedRequest) {
FreePool (ConfigRequest);
ConfigRequest = NULL;
}
//
// Set Progress string to the original request string.
//
if (Request == NULL) {
*Progress = NULL;
} else if (StrStr (Request, L"OFFSET") == NULL) {
*Progress = Request + StrLen (Request);
}
return Status;
}
/**
This function applies changes in a driver's configuration.
Input is a Configuration, which has the routing data for this
driver followed by name / value configuration pairs. The driver
must apply those pairs to its configurable storage. If the
driver's configuration is stored in a linear block of data
and the driver's name / value pairs are in <BlockConfig>
format, it may use the ConfigToBlock helper function (above) to
simplify the job.
@param[in] This Points to the EFI_HII_CONFIG_ACCESS_PROTOCOL.
@param[in] Configuration A null-terminated Unicode string in
<ConfigString> format.
@param[out] Progress A pointer to a string filled in with the
offset of the most recent '&' before the
first failing name / value pair (or the
beginning of the string if the failure
is in the first name / value pair) or
the terminating NULL if all was
successful.
@retval EFI_SUCCESS The results have been distributed or are
awaiting distribution.
@retval EFI_OUT_OF_RESOURCES Not enough memory to store the
parts of the results that must be
stored awaiting possible future
protocols.
@retval EFI_INVALID_PARAMETERS Passing in a NULL for the
Results parameter would result
in this type of error.
@retval EFI_NOT_FOUND Target for the specified routing data
was not found.
**/
EFI_STATUS
EFIAPI
HttpBootFormRouteConfig (
IN CONST EFI_HII_CONFIG_ACCESS_PROTOCOL *This,
IN CONST EFI_STRING Configuration,
OUT EFI_STRING *Progress
)
{
EFI_STATUS Status;
UINTN BufferSize;
HTTP_BOOT_FORM_CALLBACK_INFO *CallbackInfo;
HTTP_BOOT_PRIVATE_DATA *Private;
if (Progress == NULL) {
return EFI_INVALID_PARAMETER;
}
*Progress = Configuration;
if (Configuration == NULL) {
return EFI_INVALID_PARAMETER;
}
//
// Check routing data in <ConfigHdr>.
// Note: there is no name for Name/Value storage, only GUID will be checked
//
if (!HiiIsConfigHdrMatch (Configuration, &gHttpBootConfigGuid, mHttpBootConfigStorageName)) {
return EFI_NOT_FOUND;
}
CallbackInfo = HTTP_BOOT_FORM_CALLBACK_INFO_FROM_CONFIG_ACCESS (This);
Private = HTTP_BOOT_PRIVATE_DATA_FROM_CALLBACK_INFO (CallbackInfo);
BufferSize = sizeof (HTTP_BOOT_CONFIG_IFR_NVDATA);
ZeroMem (&CallbackInfo->HttpBootNvData, BufferSize);
Status = gHiiConfigRouting->ConfigToBlock (
gHiiConfigRouting,
Configuration,
(UINT8 *) &CallbackInfo->HttpBootNvData,
&BufferSize,
Progress
);
if (EFI_ERROR (Status)) {
return Status;
}
//
// Create a new boot option according to the configuration data.
//
HttpBootAddBootOption (
Private,
(CallbackInfo->HttpBootNvData.IpVersion == HTTP_BOOT_IP_VERSION_6) ? TRUE : FALSE,
CallbackInfo->HttpBootNvData.Description,
CallbackInfo->HttpBootNvData.Uri
);
return EFI_SUCCESS;
}
/**
This function is called to provide results data to the driver.
This data consists of a unique key that is used to identify
which data is either being passed back or being asked for.
@param[in] This Points to the EFI_HII_CONFIG_ACCESS_PROTOCOL.
@param[in] Action Specifies the type of action taken by the browser.
@param[in] QuestionId A unique value which is sent to the original
exporting driver so that it can identify the type
of data to expect. The format of the data tends to
vary based on the opcode that generated the callback.
@param[in] Type The type of value for the question.
@param[in, out] Value A pointer to the data being sent to the original
exporting driver.
@param[out] ActionRequest On return, points to the action requested by the
callback function.
@retval EFI_SUCCESS The callback successfully handled the action.
@retval EFI_OUT_OF_RESOURCES Not enough storage is available to hold the
variable and its data.
@retval EFI_DEVICE_ERROR The variable could not be saved.
@retval EFI_UNSUPPORTED The specified Action is not supported by the
callback.
**/
EFI_STATUS
EFIAPI
HttpBootFormCallback (
IN CONST EFI_HII_CONFIG_ACCESS_PROTOCOL *This,
IN EFI_BROWSER_ACTION Action,
IN EFI_QUESTION_ID QuestionId,
IN UINT8 Type,
IN OUT EFI_IFR_TYPE_VALUE *Value,
OUT EFI_BROWSER_ACTION_REQUEST *ActionRequest
)
{
EFI_INPUT_KEY Key;
UINTN Index;
CHAR16 *Uri;
HTTP_BOOT_FORM_CALLBACK_INFO *CallbackInfo;
if (This == NULL || Value == NULL) {
return EFI_INVALID_PARAMETER;
}
CallbackInfo = HTTP_BOOT_FORM_CALLBACK_INFO_FROM_CONFIG_ACCESS (This);
if (Action != EFI_BROWSER_ACTION_CHANGING) {
return EFI_UNSUPPORTED;
}
switch (QuestionId) {
case KEY_INITIATOR_URI:
//
// Get user input URI string
//
Uri = HiiGetString (CallbackInfo->RegisteredHandle, Value->string, NULL);
if (Uri == NULL) {
return EFI_UNSUPPORTED;
}
//
// Convert the scheme to all lower case.
//
for (Index = 0; Index < StrLen (Uri); Index++) {
if (Uri[Index] == L':') {
break;
}
if (Uri[Index] >= L'A' && Uri[Index] <= L'Z') {
Uri[Index] -= (CHAR16)(L'A' - L'a');
}
}
//
// Set the converted URI string back
//
HiiSetString (CallbackInfo->RegisteredHandle, Value->string, Uri, NULL);
//
// The URI should be either an empty string (for corporate environment) ,or http(s) for home environment.
// Pop up a message box for other unsupported URI.
//
if ((StrLen (Uri) != 0) && (StrnCmp (Uri, L"http://", 7) != 0) && (StrnCmp (Uri, L"https://", 8) != 0)) {
CreatePopUp (
EFI_LIGHTGRAY | EFI_BACKGROUND_BLUE,
&Key,
L"ERROR: Unsupported URI!",
L"Only supports HTTP and HTTPS",
NULL
);
}
FreePool (Uri);
break;
default:
break;
}
return EFI_SUCCESS;
}
/**
Initialize the configuration form.
@param[in] Private Pointer to the driver private data.
@retval EFI_SUCCESS The configuration form is initialized.
@retval EFI_OUT_OF_RESOURCES Failed to allocate memory.
**/
EFI_STATUS
HttpBootConfigFormInit (
IN HTTP_BOOT_PRIVATE_DATA *Private
)
{
EFI_STATUS Status;
HTTP_BOOT_FORM_CALLBACK_INFO *CallbackInfo;
VENDOR_DEVICE_PATH VendorDeviceNode;
CHAR16 *MacString;
CHAR16 *OldMenuString;
CHAR16 MenuString[128];
CallbackInfo = &Private->CallbackInfo;
if (CallbackInfo->Initilized) {
return EFI_SUCCESS;
}
CallbackInfo->Signature = HTTP_BOOT_FORM_CALLBACK_INFO_SIGNATURE;
//
// Construct device path node for EFI HII Config Access protocol,
// which consists of controller physical device path and one hardware
// vendor guid node.
//
ZeroMem (&VendorDeviceNode, sizeof (VENDOR_DEVICE_PATH));
VendorDeviceNode.Header.Type = HARDWARE_DEVICE_PATH;
VendorDeviceNode.Header.SubType = HW_VENDOR_DP;
CopyGuid (&VendorDeviceNode.Guid, &gEfiCallerIdGuid);
SetDevicePathNodeLength (&VendorDeviceNode.Header, sizeof (VENDOR_DEVICE_PATH));
CallbackInfo->HiiVendorDevicePath = AppendDevicePathNode (
Private->ParentDevicePath,
(EFI_DEVICE_PATH_PROTOCOL *) &VendorDeviceNode
);
if (CallbackInfo->HiiVendorDevicePath == NULL) {
Status = EFI_OUT_OF_RESOURCES;
goto Error;
}
CallbackInfo->ConfigAccess.ExtractConfig = HttpBootFormExtractConfig;
CallbackInfo->ConfigAccess.RouteConfig = HttpBootFormRouteConfig;
CallbackInfo->ConfigAccess.Callback = HttpBootFormCallback;
//
// Install Device Path Protocol and Config Access protocol to driver handle.
//
Status = gBS->InstallMultipleProtocolInterfaces (
&CallbackInfo->ChildHandle,
&gEfiDevicePathProtocolGuid,
CallbackInfo->HiiVendorDevicePath,
&gEfiHiiConfigAccessProtocolGuid,
&CallbackInfo->ConfigAccess,
NULL
);
if (EFI_ERROR (Status)) {
goto Error;
}
//
// Publish our HII data.
//
CallbackInfo->RegisteredHandle = HiiAddPackages (
&gHttpBootConfigGuid,
CallbackInfo->ChildHandle,
HttpBootDxeStrings,
HttpBootConfigVfrBin,
NULL
);
if (CallbackInfo->RegisteredHandle == NULL) {
Status = EFI_OUT_OF_RESOURCES;
goto Error;
}
//
// Append MAC string in the menu help string
//
Status = NetLibGetMacString (Private->Controller, NULL, &MacString);
if (!EFI_ERROR (Status)) {
OldMenuString = HiiGetString (
CallbackInfo->RegisteredHandle,
STRING_TOKEN (STR_HTTP_BOOT_CONFIG_FORM_HELP),
NULL
);
UnicodeSPrint (MenuString, 128, L"%s (MAC:%s)", OldMenuString, MacString);
HiiSetString (
CallbackInfo->RegisteredHandle,
STRING_TOKEN (STR_HTTP_BOOT_CONFIG_FORM_HELP),
MenuString,
NULL
);
FreePool (MacString);
FreePool (OldMenuString);
CallbackInfo->Initilized = TRUE;
return EFI_SUCCESS;
}
Error:
HttpBootConfigFormUnload (Private);
return Status;
}
/**
Unload the configuration form, this includes: delete all the configuration
entries, uninstall the form callback protocol, and free the resources used.
The form will only be unload completely when both IP4 and IP6 stack are stopped.
@param[in] Private Pointer to the driver private data.
@retval EFI_SUCCESS The configuration form is unloaded.
@retval Others Failed to unload the form.
**/
EFI_STATUS
HttpBootConfigFormUnload (
IN HTTP_BOOT_PRIVATE_DATA *Private
)
{
HTTP_BOOT_FORM_CALLBACK_INFO *CallbackInfo;
if (Private->Ip4Nic != NULL || Private->Ip6Nic != NULL) {
//
// Only unload the configuration form when both IP4 and IP6 stack are stopped.
//
return EFI_SUCCESS;
}
CallbackInfo = &Private->CallbackInfo;
if (CallbackInfo->ChildHandle != NULL) {
//
// Uninstall EFI_HII_CONFIG_ACCESS_PROTOCOL
//
gBS->UninstallMultipleProtocolInterfaces (
CallbackInfo->ChildHandle,
&gEfiDevicePathProtocolGuid,
CallbackInfo->HiiVendorDevicePath,
&gEfiHiiConfigAccessProtocolGuid,
&CallbackInfo->ConfigAccess,
NULL
);
CallbackInfo->ChildHandle = NULL;
}
if (CallbackInfo->HiiVendorDevicePath != NULL) {
FreePool (CallbackInfo->HiiVendorDevicePath);
CallbackInfo->HiiVendorDevicePath = NULL;
}
if (CallbackInfo->RegisteredHandle != NULL) {
//
// Remove HII package list
//
HiiRemovePackages (CallbackInfo->RegisteredHandle);
CallbackInfo->RegisteredHandle = NULL;
}
return EFI_SUCCESS;
}