00001 #ifndef __ASN1_H__ 00002 #define __ASN1_H__ 00003 00004 /* 00005 ** ASN.1 Identifier Classes 00006 */ 00007 #define SF_ASN1_CLASS_MASK 0xc0 00008 #define SF_ASN1_CLASS_UNIVERSAL 0x00 00009 #define SF_ASN1_CLASS_APPLICATION 0x40 00010 #define SF_ASN1_CLASS_CONTEXT 0x80 00011 #define SF_ASN1_CLASS_PRIVATE 0xc0 00012 00013 /* 00014 ** ASN.1 Identifier Flags 00015 */ 00016 #define SF_ASN1_FLAG_MASK 0x20 00017 #define SF_ASN1_FLAG_PRIMITIVE 0x00 00018 #define SF_ASN1_FLAG_CONSTRUCT 0x20 00019 00020 /* 00021 ** ASN.1 Universal Tags 00022 */ 00023 #define SF_ASN1_TAG_MASK 0x1f 00024 00025 #define SF_ASN1_TAG_RSV_ENC 0 00026 #define SF_ASN1_TAG_BOOL 1 00027 #define SF_ASN1_TAG_INT 2 00028 #define SF_ASN1_TAG_BIT_STR 3 00029 #define SF_ASN1_TAG_OCT_STR 4 00030 #define SF_ASN1_TAG_NULL 5 00031 #define SF_ASN1_TAG_OBJ_IDENT 6 00032 #define SF_ASN1_TAG_OBJ_DESC 7 00033 #define SF_ASN1_TAG_EXT 8 00034 #define SF_ASN1_TAG_REAL 9 00035 #define SF_ASN1_TAG_ENUM 10 00036 #define SF_ASN1_TAG_EMB_PDV 11 00037 #define SF_ASN1_TAG_REL_OBJ 13 00038 00039 #define SF_ASN1_TAG_SEQ 16 00040 #define SF_ASN1_TAG_SET 17 00041 00042 #define SF_ASN1_TAG_UTF8_STR 12 00043 #define SF_ASN1_TAG_NUM_STR 18 00044 #define SF_ASN1_TAG_PRINT_STR 19 00045 #define SF_ASN1_TAG_T61_STR 20 00046 #define SF_ASN1_TAG_VID_STR 21 00047 #define SF_ASN1_TAG_IA5_STR 22 00048 #define SF_ASN1_TAG_GRAPH_STR 25 00049 #define SF_ASN1_TAG_VIS_STR 26 00050 #define SF_ASN1_TAG_GEN_STR 27 00051 #define SF_ASN1_TAG_UNIV_STR 28 00052 #define SF_ASN1_TAG_BMP_STR 30 00053 00054 #define SF_ASN1_TAG_UTC_TIME 23 00055 #define SF_ASN1_TAG_GEN_TIME 24 00056 00057 #define SF_ASN1_TAG_EXTENSION 31 00058 00059 /* 00060 ** BER Length Decoding 00061 */ 00062 #define SF_BER_LEN_MASK 0x80 00063 #define SF_BER_LEN_DEF_SHORT 1 00064 #define SF_BER_LEN_DEF_LONG 2 00065 #define SF_BER_LEN_INDEF 3 00066 00067 typedef struct s_ASN1_LEN 00068 { 00069 unsigned char type; 00070 unsigned int size; 00071 00072 } ASN1_LEN; 00073 00074 typedef struct s_ASN1_IDENT 00075 { 00076 unsigned char class; 00077 unsigned char flag; 00078 unsigned char tag_type; 00079 unsigned int tag; 00080 00081 } ASN1_IDENT; 00082 00083 typedef struct s_ASN1_TYPE 00084 { 00085 ASN1_IDENT ident; 00086 ASN1_LEN len; 00087 00088 unsigned char *data; 00089 unsigned int data_len; 00090 00091 unsigned char eoc; 00092 00093 struct s_ASN1_TYPE *next; 00094 struct s_ASN1_TYPE *cnext; 00095 00096 } ASN1_TYPE; 00097 00098 typedef struct s_ASN1_DATA 00099 { 00100 unsigned char *data; 00101 unsigned char *start; 00102 unsigned char *end; 00103 unsigned int len; 00104 00105 } ASN1_DATA; 00106 00107 /* 00108 ** Error Codes 00109 */ 00110 #define ASN1_ERR_OOB 1 00111 #define ASN1_ERR_NONFATAL 2 00112 #define ASN1_ERR_OVERLONG_LEN 3 00113 00114 #define ASN1_OK 0 00115 00116 #define ASN1_ERR_NULL_MEM -1 00117 #define ASN1_ERR_INVALID_BER_TAG_LEN -3 00118 #define ASN1_ERR_MEM_ALLOC -4 00119 #define ASN1_ERR_FATAL -5 00120 #define ASN1_ERR_INVALID_INDEF_LEN -6 00121 #define ASN1_ERR_INVALID_ARG -7 00122 #define ASN1_ERR_STACK -8 00123 00124 int asn1_init_mem(int iNodes); 00125 int asn1_decode(unsigned char *data, unsigned int len, ASN1_TYPE **asn1_type); 00126 int asn1_print_types(ASN1_TYPE *asn1_type, void *user); 00127 int asn1_traverse(ASN1_TYPE *asn1, void * user, 00128 int (*DetectFunc)(ASN1_TYPE *, void *)); 00129 00130 #endif
1.4.2