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Diff for /embedaddon/libnet/src/libnet_asn1.c between versions 1.1.1.1 and 1.1.1.3

version 1.1.1.1, 2012/02/21 22:14:23 version 1.1.1.3, 2023/09/27 11:11:38
Line 53 Line 53
  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.   * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
  */   */
   
#if (HAVE_CONFIG_H)#include "common.h"
#include "../include/config.h" 
#endif 
#if (!(_WIN32) || (__CYGWIN__))  
#include "../include/libnet.h" 
#else 
#include "../include/win32/libnet.h" 
#endif 
   
u_int8_t *uint8_t *
libnet_build_asn1_int(u_int8_t *data, int *datalen, u_int8_t type, int32_t *int_p,libnet_build_asn1_int(uint8_t *data, int *datalen, uint8_t type, int32_t *int_p,
             int int_s)              int int_s)
 {  {
     /*      /*
      *  ASN.1 integer ::= 0x02 asnlength byte {byte}*       *  ASN.1 integer ::= 0x02 asnlength byte {byte}*
      */       */
      register int32_t integer;       register int32_t integer;
     register u_int32_t mask;     register uint32_t mask;
   
     if (int_s != sizeof (int32_t))      if (int_s != sizeof (int32_t))
     {      {
Line 83  libnet_build_asn1_int(u_int8_t *data, int *datalen, u_ Line 76  libnet_build_asn1_int(u_int8_t *data, int *datalen, u_
      *  2's complement integer.  There should be no sequence of 9 consecutive       *  2's complement integer.  There should be no sequence of 9 consecutive
      *  1's or 0's at the most significant end of the integer.       *  1's or 0's at the most significant end of the integer.
      */       */
    mask = ((u_int32_t) 0x1FF) << ((8 * (sizeof (int32_t) - 1)) - 1);    mask = ((uint32_t) 0x1FF) << ((8 * (sizeof (int32_t) - 1)) - 1);
     /* mask is 0xFF800000 on a big-endian machine */      /* mask is 0xFF800000 on a big-endian machine */
   
     while ((((integer & mask) == 0) || ((integer & mask) == mask)) && int_s > 1)      while ((((integer & mask) == 0) || ((integer & mask) == mask)) && int_s > 1)
Line 101  libnet_build_asn1_int(u_int8_t *data, int *datalen, u_ Line 94  libnet_build_asn1_int(u_int8_t *data, int *datalen, u_
   
     *datalen -= int_s;      *datalen -= int_s;
   
    mask = ((u_int32_t) 0xFF) << (8 * (sizeof(int32_t) - 1));    mask = ((uint32_t) 0xFF) << (8 * (sizeof(int32_t) - 1));
     /* mask is 0xFF000000 on a big-endian machine */      /* mask is 0xFF000000 on a big-endian machine */
   
     while (int_s--)      while (int_s--)
     {      {
        *data++ = (u_int8_t)((integer & mask) >> (8 * (sizeof (int32_t) - 1)));        *data++ = (uint8_t)((integer & mask) >> (8 * (sizeof (int32_t) - 1)));
         integer <<= 8;          integer <<= 8;
     }      }
     return (data);      return (data);
 }  }
   
   
u_int8_t *uint8_t *
libnet_build_asn1_uint(u_int8_t *data, int *datalen, u_int8_t type, u_int32_t *int_p,libnet_build_asn1_uint(uint8_t *data, int *datalen, uint8_t type, uint32_t *int_p,
             int int_s)              int int_s)
 {  {
     /*      /*
      *  ASN.1 integer ::= 0x02 asnlength byte {byte}*       *  ASN.1 integer ::= 0x02 asnlength byte {byte}*
      */       */
    register u_int32_t integer;    register uint32_t integer;
    register u_int32_t mask;    register uint32_t mask;
     int add_null_byte = 0;      int add_null_byte = 0;
   
     if (int_s != sizeof (int32_t))      if (int_s != sizeof (int32_t))
Line 130  libnet_build_asn1_uint(u_int8_t *data, int *datalen, u Line 123  libnet_build_asn1_uint(u_int8_t *data, int *datalen, u
     }      }
     integer = *int_p;      integer = *int_p;
   
    mask = ((u_int32_t) 0xFF) << (8 * (sizeof (int32_t) - 1));    mask = ((uint32_t) 0xFF) << (8 * (sizeof (int32_t) - 1));
     /* mask is 0xFF000000 on a big-endian machine */      /* mask is 0xFF000000 on a big-endian machine */
   
    if ((u_int8_t)((integer & mask) >> (8 * (sizeof (int32_t) - 1))) & 0x80)    if ((uint8_t)((integer & mask) >> (8 * (sizeof (int32_t) - 1))) & 0x80)
     {      {
         /* if MSB is set */          /* if MSB is set */
         add_null_byte = 1;          add_null_byte = 1;
Line 147  libnet_build_asn1_uint(u_int8_t *data, int *datalen, u Line 140  libnet_build_asn1_uint(u_int8_t *data, int *datalen, u
          * consecutive 1's or 0's at the most significant end of the           * consecutive 1's or 0's at the most significant end of the
          * integer.           * integer.
          */           */
        mask = ((u_int32_t) 0x1FF) << ((8 * (sizeof(int32_t) - 1)) - 1);        mask = ((uint32_t) 0x1FF) << ((8 * (sizeof(int32_t) - 1)) - 1);
         /* mask is 0xFF800000 on a big-endian machine */          /* mask is 0xFF800000 on a big-endian machine */
   
         while (((integer & mask) == 0) && int_s > 1)          while (((integer & mask) == 0) && int_s > 1)
Line 172  libnet_build_asn1_uint(u_int8_t *data, int *datalen, u Line 165  libnet_build_asn1_uint(u_int8_t *data, int *datalen, u
         int_s--;          int_s--;
     }      }
   
    mask = ((u_int32_t) 0xFF) << (8 * (sizeof(int32_t) - 1));    mask = ((uint32_t) 0xFF) << (8 * (sizeof(int32_t) - 1));
     /* mask is 0xFF000000 on a big-endian machine */      /* mask is 0xFF000000 on a big-endian machine */
   
     while (int_s--)      while (int_s--)
     {      {
        *data++ = (u_int8_t)((integer & mask) >> (8 * (sizeof (int32_t) - 1)));        *data++ = (uint8_t)((integer & mask) >> (8 * (sizeof (int32_t) - 1)));
         integer <<= 8;          integer <<= 8;
     }      }
     return (data);      return (data);
 }  }
   
   
u_int8_t *uint8_t *
libnet_build_asn1_string(u_int8_t *data, int *datalen, u_int8_t type,libnet_build_asn1_string(uint8_t *data, int *datalen, uint8_t type,
            u_int8_t *string, int str_s)            uint8_t *string, int str_s)
 {  {
   
     /*      /*
Line 208  libnet_build_asn1_string(u_int8_t *data, int *datalen, Line 201  libnet_build_asn1_string(u_int8_t *data, int *datalen,
 }  }
   
   
u_int8_t *uint8_t *
libnet_build_asn1_header(u_int8_t *data, int *datalen, u_int8_t type, int len)libnet_build_asn1_header(uint8_t *data, int *datalen, uint8_t type, int len)
 {  {
     if (*datalen < 1)      if (*datalen < 1)
     {      {
Line 222  libnet_build_asn1_header(u_int8_t *data, int *datalen, Line 215  libnet_build_asn1_header(u_int8_t *data, int *datalen,
 }  }
   
   
u_int8_t *uint8_t *
libnet_build_asn1_sequence(u_int8_t *data, int *datalen, u_int8_t type, int len)libnet_build_asn1_sequence(uint8_t *data, int *datalen, uint8_t type, int len)
 {  {
     *datalen -= 4;      *datalen -= 4;
     if (*datalen < 0)      if (*datalen < 0)
Line 232  libnet_build_asn1_sequence(u_int8_t *data, int *datale Line 225  libnet_build_asn1_sequence(u_int8_t *data, int *datale
         return (NULL);          return (NULL);
     }      }
     *data++ = type;      *data++ = type;
    *data++ = (u_int8_t)(0x02 | ASN_LONG_LEN);    *data++ = (uint8_t)(0x02 | ASN_LONG_LEN);
    *data++ = (u_int8_t)((len >> 8) & 0xFF);    *data++ = (uint8_t)((len >> 8) & 0xFF);
    *data++ = (u_int8_t)(len & 0xFF);    *data++ = (uint8_t)(len & 0xFF);
     return (data);      return (data);
 }  }
   
   
u_int8_t *uint8_t *
libnet_build_asn1_length(u_int8_t *data, int *datalen, int len)libnet_build_asn1_length(uint8_t *data, int *datalen, int len)
 {  {
    u_int8_t *start_data = data;    uint8_t *start_data = data;
   
     /* no indefinite lengths sent */      /* no indefinite lengths sent */
     if (len < 0x80)      if (len < 0x80)
Line 251  libnet_build_asn1_length(u_int8_t *data, int *datalen, Line 244  libnet_build_asn1_length(u_int8_t *data, int *datalen,
         {          {
             return (NULL);              return (NULL);
         }          }
        *data++ = (u_int8_t)len;        *data++ = (uint8_t)len;
     }      }
     else if (len <= 0xFF)      else if (len <= 0xFF)
     {      {
Line 259  libnet_build_asn1_length(u_int8_t *data, int *datalen, Line 252  libnet_build_asn1_length(u_int8_t *data, int *datalen,
         {          {
             return (NULL);              return (NULL);
         }          }
        *data++ = (u_int8_t)(0x01 | ASN_LONG_LEN);        *data++ = (uint8_t)(0x01 | ASN_LONG_LEN);
        *data++ = (u_int8_t)len;        *data++ = (uint8_t)len;
     }      }
     else    /* 0xFF < len <= 0xFFFF */      else    /* 0xFF < len <= 0xFFFF */
     {      {
Line 268  libnet_build_asn1_length(u_int8_t *data, int *datalen, Line 261  libnet_build_asn1_length(u_int8_t *data, int *datalen,
         {          {
             return (NULL);              return (NULL);
         }          }
        *data++ = (u_int8_t)(0x02 | ASN_LONG_LEN);        *data++ = (uint8_t)(0x02 | ASN_LONG_LEN);
        *data++ = (u_int8_t)((len >> 8) & 0xFF);        *data++ = (uint8_t)((len >> 8) & 0xFF);
        *data++ = (u_int8_t)(len & 0xFF);        *data++ = (uint8_t)(len & 0xFF);
     }      }
    *datalen -= (data - start_data);    *datalen -= (int)(data - start_data);
     return (data);      return (data);
 }  }
   
   
u_int8_t *uint8_t *
libnet_build_asn1_objid(u_int8_t *data, int *datalen, u_int8_t type, oid *objid,libnet_build_asn1_objid(uint8_t *data, int *datalen, uint8_t type, oid *objid,
             int objidlen)              int objidlen)
 {  {
     /*      /*
Line 289  libnet_build_asn1_objid(u_int8_t *data, int *datalen,  Line 282  libnet_build_asn1_objid(u_int8_t *data, int *datalen, 
      */       */
     int asnlen;      int asnlen;
     register oid *op = objid;      register oid *op = objid;
    u_int8_t objid_size[MAX_OID_LEN];    uint8_t objid_size[MAX_OID_LEN];
    register u_int32_t objid_val;    register uint32_t objid_val;
    u_int32_t first_objid_val;    uint32_t first_objid_val;
     register int i;      register int i;
   
     /* check if there are at least 2 sub-identifiers */      /* check if there are at least 2 sub-identifiers */
Line 362  libnet_build_asn1_objid(u_int8_t *data, int *datalen,  Line 355  libnet_build_asn1_objid(u_int8_t *data, int *datalen, 
         switch (objid_size[i])          switch (objid_size[i])
         {          {
             case 1:              case 1:
                *data++ = (u_int8_t)objid_val;                *data++ = (uint8_t)objid_val;
                 break;                  break;
   
             case 2:              case 2:
                *data++ = (u_int8_t)((objid_val >> 7) | 0x80);                *data++ = (uint8_t)((objid_val >> 7) | 0x80);
                *data++ = (u_int8_t)(objid_val & 0x07f);                *data++ = (uint8_t)(objid_val & 0x07f);
                 break;                  break;
             case 3:              case 3:
                *data++ = (u_int8_t)((objid_val >> 14) | 0x80);                *data++ = (uint8_t)((objid_val >> 14) | 0x80);
                *data++ = (u_int8_t)((objid_val >> 7 & 0x7f) | 0x80);                *data++ = (uint8_t)((objid_val >> 7 & 0x7f) | 0x80);
                *data++ = (u_int8_t)(objid_val & 0x07f);                *data++ = (uint8_t)(objid_val & 0x07f);
                 break;                  break;
   
             case 4:              case 4:
                *data++ = (u_int8_t)((objid_val >> 21) | 0x80);                *data++ = (uint8_t)((objid_val >> 21) | 0x80);
                *data++ = (u_int8_t)((objid_val >> 14 & 0x7f) | 0x80);                *data++ = (uint8_t)((objid_val >> 14 & 0x7f) | 0x80);
                *data++ = (u_int8_t)((objid_val >> 7 & 0x7f) | 0x80);                *data++ = (uint8_t)((objid_val >> 7 & 0x7f) | 0x80);
                *data++ = (u_int8_t)(objid_val & 0x07f);                *data++ = (uint8_t)(objid_val & 0x07f);
                 break;                  break;
   
             case 5:              case 5:
                *data++ = (u_int8_t)((objid_val >> 28) | 0x80);                *data++ = (uint8_t)((objid_val >> 28) | 0x80);
                *data++ = (u_int8_t)((objid_val >> 21 & 0x7f) | 0x80);                *data++ = (uint8_t)((objid_val >> 21 & 0x7f) | 0x80);
                *data++ = (u_int8_t)((objid_val >> 14 & 0x7f) | 0x80);                *data++ = (uint8_t)((objid_val >> 14 & 0x7f) | 0x80);
                *data++ = (u_int8_t)((objid_val >> 7 & 0x7f) | 0x80);                *data++ = (uint8_t)((objid_val >> 7 & 0x7f) | 0x80);
                *data++ = (u_int8_t)(objid_val & 0x07f);                *data++ = (uint8_t)(objid_val & 0x07f);
                 break;                  break;
         }          }
     }      }
Line 398  libnet_build_asn1_objid(u_int8_t *data, int *datalen,  Line 391  libnet_build_asn1_objid(u_int8_t *data, int *datalen, 
 }  }
   
   
u_int8_t *uint8_t *
libnet_build_asn1_null(u_int8_t *data, int *datalen, u_int8_t type)libnet_build_asn1_null(uint8_t *data, int *datalen, uint8_t type)
 {  {
     /*      /*
      *  ASN.1 null ::= 0x05 0x00       *  ASN.1 null ::= 0x05 0x00
Line 408  libnet_build_asn1_null(u_int8_t *data, int *datalen, u Line 401  libnet_build_asn1_null(u_int8_t *data, int *datalen, u
 }  }
   
   
u_int8_t *uint8_t *
libnet_build_asn1_bitstring(u_int8_t *data, int *datalen, u_int8_t type,libnet_build_asn1_bitstring(uint8_t *data, int *datalen, uint8_t type,
            u_int8_t *string, int str_s)            uint8_t *string, int str_s)
 {  {
   
     /*      /*
Line 433  libnet_build_asn1_bitstring(u_int8_t *data, int *datal Line 426  libnet_build_asn1_bitstring(u_int8_t *data, int *datal
     return (data + str_s);      return (data + str_s);
 }  }
   
/* EOF *//**
  * Local Variables:
  *  indent-tabs-mode: nil
  *  c-file-style: "stroustrup"
  * End:
  */
Removed from v.1.1.1.1  
changed lines
  Added in v.1.1.1.3

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