diff options
Diffstat (limited to 'NetworkPkg/HttpUtilitiesDxe/HttpUtilitiesImpl.c')
| -rw-r--r-- | NetworkPkg/HttpUtilitiesDxe/HttpUtilitiesImpl.c | 279 |
1 files changed, 279 insertions, 0 deletions
diff --git a/NetworkPkg/HttpUtilitiesDxe/HttpUtilitiesImpl.c b/NetworkPkg/HttpUtilitiesDxe/HttpUtilitiesImpl.c new file mode 100644 index 0000000..78047c8 --- /dev/null +++ b/NetworkPkg/HttpUtilitiesDxe/HttpUtilitiesImpl.c @@ -0,0 +1,279 @@ +/** @file + The functions for HttpUtilities driver. + + Copyright (c) 2015, 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 "HttpUtilitiesDxe.h" + + +/** + Get the next string, which is distinguished by specified seperator. + + @param[in] String Pointer to the string. + @param[in] Seperator Specified seperator used to distinguish where is the beginning + of next string. + + @return Pointer to the next string. + @return NULL if not find or String is NULL. + +**/ +CHAR8 * +AsciiStrGetNextToken ( + IN CONST CHAR8 *String, + IN CHAR8 Seperator + ) +{ + CONST CHAR8 *Token; + + Token = String; + while (TRUE) { + if (*Token == 0) { + return NULL; + } + if (*Token == Seperator) { + return (CHAR8 *)(Token + 1); + } + Token++; + } +} + + +/** + Free existing HeaderFields. + + @param[in] HeaderFields Pointer to array of key/value header pairs waitting for free. + @param[in] FieldCount The number of header pairs in HeaderFields. + +**/ +VOID +FreeHeaderFields ( + IN EFI_HTTP_HEADER *HeaderFields, + IN UINTN FieldCount + ) +{ + UINTN Index; + + if (HeaderFields != NULL) { + for (Index = 0; Index < FieldCount; Index++) { + if (HeaderFields[Index].FieldName != NULL) { + FreePool (HeaderFields[Index].FieldName); + } + if (HeaderFields[Index].FieldValue != NULL) { + FreePool (HeaderFields[Index].FieldValue); + } + } + + FreePool (HeaderFields); + } +} + + +/** + Find required header field in HeaderFields. + + @param[in] HeaderFields Pointer to array of key/value header pairs. + @param[in] FieldCount The number of header pairs. + @param[in] FieldName Pointer to header field's name. + + @return Pointer to the queried header field. + @return NULL if not find this required header field. + +**/ +EFI_HTTP_HEADER * +FindHttpHeader ( + IN EFI_HTTP_HEADER *HeaderFields, + IN UINTN FieldCount, + IN CHAR8 *FieldName + ) +{ + UINTN Index; + + for (Index = 0; Index < FieldCount; Index++) { + if (AsciiStrCmp (FieldName, HeaderFields[Index].FieldName) == 0) { + // + // Find the required header field. + // + return &HeaderFields[Index]; + } + } + return NULL; +} + + +/** + Check whether header field called FieldName is in DeleteList. + + @param[in] DeleteList Pointer to array of key/value header pairs. + @param[in] DeleteCount The number of header pairs. + @param[in] FieldName Pointer to header field's name. + + @return TRUE if FieldName is not in DeleteList, that means this header field is valid. + @return FALSE if FieldName is in DeleteList, that means this header field is invalid. + +**/ +BOOLEAN +IsValidHttpHeader ( + IN CHAR8 *DeleteList[], + IN UINTN DeleteCount, + IN CHAR8 *FieldName + ) +{ + UINTN Index; + + for (Index = 0; Index < DeleteCount; Index++) { + if (AsciiStrCmp (FieldName, DeleteList[Index]) == 0) { + return FALSE; + } + } + + return TRUE; +} + + +/** + Set FieldName and FieldValue into specified HttpHeader. + + @param[in] HttpHeader Specified HttpHeader. + @param[in] FieldName FieldName of this HttpHeader. + @param[in] FieldValue FieldValue of this HttpHeader. + + + @retval EFI_SUCCESS The FieldName and FieldValue are set into HttpHeader successfully. + @retval EFI_OUT_OF_RESOURCES Failed to allocate resources. + +**/ +EFI_STATUS +SetFieldNameAndValue ( + IN EFI_HTTP_HEADER *HttpHeader, + IN CHAR8 *FieldName, + IN CHAR8 *FieldValue + ) +{ + UINTN FieldNameSize; + UINTN FieldValueSize; + + if (HttpHeader->FieldName != NULL) { + FreePool (HttpHeader->FieldName); + } + if (HttpHeader->FieldValue != NULL) { + FreePool (HttpHeader->FieldValue); + } + + FieldNameSize = AsciiStrSize (FieldName); + HttpHeader->FieldName = AllocateZeroPool (FieldNameSize); + if (HttpHeader->FieldName == NULL) { + return EFI_OUT_OF_RESOURCES; + } + CopyMem (HttpHeader->FieldName, FieldName, FieldNameSize); + HttpHeader->FieldName[FieldNameSize - 1] = 0; + + FieldValueSize = AsciiStrSize (FieldValue); + HttpHeader->FieldValue = AllocateZeroPool (FieldValueSize); + if (HttpHeader->FieldValue == NULL) { + return EFI_OUT_OF_RESOURCES; + } + CopyMem (HttpHeader->FieldValue, FieldValue, FieldValueSize); + HttpHeader->FieldValue[FieldValueSize - 1] = 0; + + return EFI_SUCCESS; +} + + +/** + Get one key/value header pair from the raw string. + + @param[in] String Pointer to the raw string. + @param[out] FieldName Pointer to header field's name. + @param[out] FieldValue Pointer to header field's value. + + @return Pointer to the next raw string. + @return NULL if no key/value header pair from this raw string. + +**/ +CHAR8 * +GetFieldNameAndValue ( + IN CHAR8 *String, + OUT CHAR8 **FieldName, + OUT CHAR8 **FieldValue + ) +{ + CHAR8 *FieldNameStr; + CHAR8 *FieldValueStr; + CHAR8 *StrPtr; + + if (String == NULL || FieldName == NULL || FieldValue == NULL) { + return NULL; + } + + *FieldName = NULL; + *FieldValue = NULL; + FieldNameStr = NULL; + FieldValueStr = NULL; + StrPtr = NULL; + + // + // Each header field consists of a name followed by a colon (":") and the field value. + // + FieldNameStr = String; + FieldValueStr = AsciiStrGetNextToken (FieldNameStr, ':'); + if (FieldValueStr == NULL) { + return NULL; + } + + // + // Replace ':' with 0 + // + *(FieldValueStr - 1) = 0; + + // + // The field value MAY be preceded by any amount of LWS, though a single SP is preferred. + // + while (TRUE) { + if (*FieldValueStr == ' ' || *FieldValueStr == '\t') { + FieldValueStr ++; + } else if (*FieldValueStr == '\r' && *(FieldValueStr + 1) == '\n' && + (*(FieldValueStr + 2) == ' ' || *(FieldValueStr + 2) == '\t')) { + FieldValueStr = FieldValueStr + 3; + } else { + break; + } + } + + // + // Header fields can be extended over multiple lines by preceding each extra + // line with at least one SP or HT. + // + StrPtr = FieldValueStr; + do { + StrPtr = AsciiStrGetNextToken (StrPtr, '\r'); + if (StrPtr == NULL || *StrPtr != '\n') { + return NULL; + } + + StrPtr++; + } while (*StrPtr == ' ' || *StrPtr == '\t'); + + // + // Replace '\r' with 0 + // + *(StrPtr - 2) = 0; + + // + // Get FieldName and FieldValue. + // + *FieldName = FieldNameStr; + *FieldValue = FieldValueStr; + + return StrPtr; +} + |