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asn1.h
资源名称：hp_snmp3.zip　[点击查看]
上传用户：czjinwang
上传日期：2007-01-12
资源大小：2484k
文件大小：9k
源码类别：

SNMP编程

开发平台：

Visual C++

asn1.h：源码内容
  1. #ifndef _ASN1
  2. #define _ASN1
  4. #ifdef WIN32
  5. #ifndef __unix
  6. #include <winsock.h>
  7. #endif
  8. #endif
  10. #include "snmp_pp.h"
  11. #ifndef EIGHTBIT_SUBIDS
  12. typedef unsigned long oid;
  13. #define MAX_SUBID   0xFFFFFFFF
  14. #else
  15. typedef unsigned char oid;
  16. #define MAX_SUBID   0xFF
  17. #endif
  19. #define MAX_OID_LEN     64 /* max subid's in an oid */
  21. // asn.1 values
  22. #define ASN_BOOLEAN      (0x01)
  23. #define ASN_INTEGER      (0x02)
  24. #define ASN_BIT_STR      (0x03)
  25. #define ASN_OCTET_STR  (0x04)
  26. #define ASN_NULL      (0x05)
  27. #define ASN_OBJECT_ID  (0x06)
  28. #define ASN_SEQUENCE  (0x10)
  29. #define ASN_SET      (0x11)
  30. #define ASN_UNIVERSAL  (0x00)
  31. #define ASN_APPLICATION  (0x40)
  32. #define ASN_CONTEXT      (0x80)
  33. #define ASN_PRIVATE      (0xC0)
  34. #define ASN_PRIMITIVE  (0x00)
  35. #define ASN_CONSTRUCTOR  (0x20)
  36. #define ASN_LONG_LEN  (0x80)
  37. #define ASN_EXTENSION_ID (0x1F)
  38. #define ASN_BIT8      (0x80)
  40. #define IS_CONSTRUCTOR(byte) ((byte) & ASN_CONSTRUCTOR)
  41. #define IS_EXTENSION_ID(byte) (((byte) & ASN_EXTENSION_ID) == ASN_EXTENSION_ID)
  43. #define ASNERROR( string)
  44. #define MAX_NAME_LEN   64 
  45. #define SNMP_VERSION_1 0
  46. #define SNMP_VERSION_2C 1
  49. // defined types (from the SMI, RFC 1065) 
  50. #define SMI_IPADDRESS   (ASN_APPLICATION | 0)
  51. #define SMI_COUNTER     (ASN_APPLICATION | 1)
  52. #define SMI_GAUGE     (ASN_APPLICATION | 2)
  53. #define SMI_TIMETICKS   (ASN_APPLICATION | 3)
  54. #define SMI_OPAQUE     (ASN_APPLICATION | 4)
  55. #define SMI_NSAP        (ASN_APPLICATION | 5)
  56. #define SMI_COUNTER64   (ASN_APPLICATION | 6)
  57. #define SMI_UINTEGER    (ASN_APPLICATION | 7)
  59. #define GET_REQ_MSG     (ASN_CONTEXT | ASN_CONSTRUCTOR | 0x0)
  60. #define GETNEXT_REQ_MSG (ASN_CONTEXT | ASN_CONSTRUCTOR | 0x1)
  61. #define GET_RSP_MSG     (ASN_CONTEXT | ASN_CONSTRUCTOR | 0x2)
  62. #define SET_REQ_MSG     (ASN_CONTEXT | ASN_CONSTRUCTOR | 0x3)
  63. #define TRP_REQ_MSG     (ASN_CONTEXT | ASN_CONSTRUCTOR | 0x4)
  65. #define GETBULK_REQ_MSG (ASN_CONTEXT | ASN_CONSTRUCTOR | 0x5)
  66. #define INFORM_REQ_MSG (ASN_CONTEXT | ASN_CONSTRUCTOR | 0x6)
  67. #define TRP2_REQ_MSG (ASN_CONTEXT | ASN_CONSTRUCTOR | 0x7)
  68. #define REPORT_MSG     (ASN_CONTEXT | ASN_CONSTRUCTOR | 0x8)
  70. #define SNMP_NOSUCHOBJECT    (ASN_CONTEXT | ASN_PRIMITIVE | 0x0)
  71. #define SNMP_NOSUCHINSTANCE  (ASN_CONTEXT | ASN_PRIMITIVE | 0x1)
  72. #define SNMP_ENDOFMIBVIEW    (ASN_CONTEXT | ASN_PRIMITIVE | 0x2)
  74. #define SNMP_MSG_LENGTH 1500
  76. typedef struct sockaddr_in  ipaddr;
  78. // pdu
  79. struct snmp_pdu {
  80.     int     command;      // pdu type
  81.     unsigned long  reqid;    // Request id 
  82.     unsigned long  errstat;  // Error status 
  83.     unsigned long  errindex; // Error index 
  85.     // Trap information 
  86.     oid     *enterprise;     // System OID 
  87.     int     enterprise_length;
  88.     ipaddr  agent_addr;     // address of object generating trap 
  89.     int     trap_type;     // trap type 
  90.     int     specific_type;  // specific type 
  91.     unsigned long  time; // Uptime 
  93. // vb list
  94.     struct variable_list *variables;
  95. };
  97. // vb list
  98. struct variable_list {
  99.     struct variable_list *next_variable;    // NULL for last variable 
  100.     oid     *name;                          // Object identifier of variable 
  101.     int     name_length;                    // number of subid's in name 
  102.     unsigned char   type;                   // ASN type of variable 
  103.     union {                                 // value of variable 
  104. long *integer;
  105. unsigned char  *string;
  106. oid *objid;
  107. unsigned char   *bitstring;
  108. struct counter64 *counter64;
  109.     } val;
  110.     int     val_len;
  111. };
  115. // prototypes for encoding routines
  116. unsigned char * asn_parse_int( unsigned char *data, 
  117.                    int *datalength, 
  118.                    unsigned char *type, 
  119.                    long int *intp, 
  120.                    int intsize);
  123. unsigned char * asn_parse_unsigned_int( unsigned char *data,
  124.                                         int *datalength,
  125.                                         unsigned char *type,
  126.                                         unsigned long *intp,
  127.                                         int intsize);
  129. unsigned char * asn_build_int( unsigned char *data,
  130.                                int *datalength,
  131.                                unsigned char type,
  132.                                long *intp,
  133.                                int intsize);
  135. unsigned char * asn_build_unsigned_int( unsigned char *data,
  136.                                         int *datalength,
  137.                                         unsigned char type,
  138.                                         unsigned long *intp,
  139.                                         int intsize);
  141. unsigned char * asn_parse_string( unsigned char *data,
  142.                                   int *datalength,
  143.                                   unsigned char *type,
  144.                                   unsigned char *string,
  145.                                   int *strlength);
  147. unsigned char * asn_build_string( unsigned char *data,
  148.                                   int *datalength,
  149.                                   unsigned char type,
  150.                                   unsigned char *string,
  151.                                   int strlength);
  153. unsigned char *asn_parse_header( unsigned char *data,
  154.  int *datalength,
  155.                                  unsigned char *type);
  157. unsigned char * asn_build_header( unsigned char *data,
  158.                                   int *datalength,
  159.                                   unsigned char type,
  160.                                   int length);
  162. unsigned char * asn_build_sequence( unsigned char *data,
  163.                                     int *datalength,
  164.                                     unsigned char type,
  165.                                     int length);
  167. unsigned char * asn_parse_length( unsigned char *data,
  168.                                   unsigned long  *length);
  170. unsigned char *asn_build_length( unsigned char *data,
  171.                                  int *datalength,
  172.                                  int length);
  174. unsigned char *asn_parse_objid( unsigned char *data,
  175.                                 int *datalength,
  176.                                 unsigned char *type,
  177.                                 oid *objid,
  178.                                 int *objidlength);
  180. unsigned char *asn_build_objid( unsigned char *data,
  181.                                 int *datalength,
  182.                                 unsigned char type,
  183.                                 oid *objid,
  184.                                 int objidlength);
  186. unsigned char *asn_parse_null(unsigned char *data,
  187.                               int *datalength,
  188.                               unsigned char *type);
  190. unsigned char *asn_build_null( unsigned char *data,
  191.                                int *datalength,
  192.                                unsigned char type);
  194. unsigned char *asn_parse_bitstring( unsigned char *data,
  195.                                     int *datalength,
  196.                                     unsigned char *type,
  197.                                     unsigned char *string,
  198.                                     int *strlength);
  200. unsigned char *asn_build_bitstring( unsigned char *data,
  201.                                     int *datalength,
  202.                                     unsigned char type,
  203.                                     unsigned char *string,
  204.                                     int strlength);
  206. unsigned char * asn_parse_unsigned_int64(  unsigned char *data,
  207.                                            int *datalength,
  208.                                            unsigned char *type,
  209.                                            struct counter64 *cp,
  210.                                            int countersize);
  212. unsigned char * asn_build_unsigned_int64( unsigned char *data,
  213.                                           int *datalength,
  214.                                           unsigned char type,
  215.                                           struct counter64 *cp,
  216.                                           int countersize);
  218. struct counter64 {
  219.     unsigned long high;
  220.     unsigned long low;
  221. };
  223. struct snmp_pdu * snmp_pdu_create( int command);
  225. void snmp_free_pdu( struct snmp_pdu *pdu);
  227. int snmp_build( struct snmp_pdu *pdu, 
  228.     unsigned char *packet, 
  229. int *out_length, 
  230. long version,
  231. unsigned char* community,
  232. int community_len);
  234. void snmp_add_var(struct snmp_pdu *pdu, 
  235.       oid *name, 
  236.       int name_length,
  237.       SmiVALUE *smival);
  239. int snmp_parse( struct snmp_pdu *pdu,
  240.                 unsigned char  *data,
  241. unsigned char *community_name,
  242. unsigned long &community_len,
  243. snmp_version &version,
  244.                 int length);
  247. #endif  // _ASN1