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      1 /*
      2  * Copyright (C) 2007 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 #ifndef __PARSER_DM_H__
     18 #define __PARSER_DM_H__
     19 
     20 #ifdef __cplusplus
     21 extern "C" {
     22 #endif
     23 
     24 #include <drm_common_types.h>
     25 
     26 #define MAX_CONTENT_TYPE_LEN                                64
     27 #define MAX_CONTENT_ID                                      256
     28 #define MAX_CONTENT_BOUNDARY_LEN                            256
     29 #define MAX_RIGHTS_ISSUER_LEN                               256
     30 
     31 #define DRM_MIME_TYPE_RIGHTS_XML                            "application/vnd.oma.drm.rights+xml"
     32 #define DRM_MIME_TYPE_CONTENT                               "application/vnd.oma.drm.content"
     33 
     34 #define HEADERS_TRANSFER_CODING                             "Content-Transfer-Encoding:"
     35 #define HEADERS_CONTENT_TYPE                                "Content-Type:"
     36 #define HEADERS_CONTENT_ID                                  "Content-ID:"
     37 
     38 #define TRANSFER_CODING_TYPE_7BIT                           "7bit"
     39 #define TRANSFER_CODING_TYPE_8BIT                           "8bit"
     40 #define TRANSFER_CODING_TYPE_BINARY                         "binary"
     41 #define TRANSFER_CODING_TYPE_BASE64                         "base64"
     42 
     43 #define DRM_UID_TYPE_FORWORD_LOCK                           "forwardlock"
     44 #define DRM_NEW_LINE_CRLF                                   "\r\n"
     45 
     46 #define HEADERS_TRANSFER_CODING_LEN                         26
     47 #define HEADERS_CONTENT_TYPE_LEN                            13
     48 #define HEADERS_CONTENT_ID_LEN                              11
     49 
     50 #define DRM_MESSAGE_CODING_7BIT                             0  /* default */
     51 #define DRM_MESSAGE_CODING_8BIT                             1
     52 #define DRM_MESSAGE_CODING_BINARY                           2
     53 #define DRM_MESSAGE_CODING_BASE64                           3
     54 
     55 #define DRM_B64_DEC_BLOCK                                   3
     56 #define DRM_B64_ENC_BLOCK                                   4
     57 
     58 typedef struct _T_DRM_DM_Info {
     59     uint8_t contentType[MAX_CONTENT_TYPE_LEN];  /**< Content type */
     60     uint8_t contentID[MAX_CONTENT_ID];          /**< Content ID */
     61     uint8_t boundary[MAX_CONTENT_BOUNDARY_LEN]; /**< DRM message's boundary */
     62     uint8_t deliveryType;                       /**< The Delivery type */
     63     uint8_t transferEncoding;                   /**< Transfer encoding type */
     64     int32_t contentOffset;                      /**< The offset of the media content from the original DRM data */
     65     int32_t contentLen;                         /**< The length of the media content */
     66     int32_t rightsOffset;                       /**< The offset of the rights object in case of combined delivery */
     67     int32_t rightsLen;                          /**< The length of the rights object in case of combined delivery */
     68     uint8_t rightsIssuer[MAX_RIGHTS_ISSUER_LEN];/**< The rights issuer address in case of separate delivery */
     69 } T_DRM_DM_Info;
     70 
     71 /**
     72  * Search the string in a limited length.
     73  *
     74  * \param str           The original string
     75  * \param strSearch     The sub-string to be searched
     76  * \param len           The length limited
     77  *
     78  * \return
     79  *      -NULL, when there is not the searched string in length
     80  *      -The pointer of this sub-string
     81  */
     82 const uint8_t* drm_strnstr(const uint8_t* str, const uint8_t* strSearch, int32_t len);
     83 
     84 /**
     85  * Parse the DRM message format data.
     86  *
     87  * \param buffer        (in)Input the DRM message format data
     88  * \param bufferLen     (in)The input buffer length
     89  * \param pDmInfo       (out)A structure pointer which contain information of DRM message headers
     90  *
     91  * \return
     92  *      -TRUE, when success
     93  *      -FALSE, when failed
     94  */
     95 int32_t drm_parseDM(const uint8_t* buffer, int32_t bufferLen, T_DRM_DM_Info* pDmInfo);
     96 
     97 #ifdef __cplusplus
     98 }
     99 #endif
    100 
    101 #endif /* __PARSER_DM_H__ */
    102