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/[ttssh2]/trunk/ttssh2/ttxssh/buffer.c

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revision 2761 by yutakakn, Sun Dec 19 15:39:58 2004 UTC revision 2816 by yutakakn, Sat Apr 23 17:26:57 2005 UTC
# Line 134  char *buffer_ptr(buffer_t *msg) Line 134  char *buffer_ptr(buffer_t *msg)
134          return (msg->buf);          return (msg->buf);
135  }  }
136    
137    char *buffer_tail_ptr(buffer_t *msg)
138    {
139            return (char *)(msg->buf + msg->offset);
140    }
141    
142    int buffer_overflow_verify(buffer_t *msg, int len)
143    {
144            if (msg->offset + len > msg->maxlen) {
145                    return -1;  // error
146            }
147            return 0; // no problem
148    }
149    
150    // for SSH1
151    void buffer_put_bignum(buffer_t *buffer, BIGNUM *value)
152    {
153        unsigned int bits, bin_size;
154        unsigned char *buf;
155        int oi;
156        char msg[2];
157            
158        bits = BN_num_bits(value);
159            bin_size = (bits + 7) / 8;
160        buf = malloc(bin_size);
161            if (buf == NULL) {
162                    *buf = 0;
163                    goto error;
164            }
165    
166        buf[0] = '\0';
167        /* Get the value of in binary */
168        oi = BN_bn2bin(value, buf);
169            if (oi != bin_size) {
170                    goto error;
171            }
172    
173        /* Store the number of bits in the buffer in two bytes, msb first. */
174            set_ushort16_MSBfirst(msg, bits);
175            buffer_append(buffer, msg, 2);
176    
177        /* Store the binary data. */
178        buffer_append(buffer, (char *)buf, oi);
179    
180    error:
181        free(buf);
182    }
183    
184    // for SSH2
185  void buffer_put_bignum2(buffer_t *msg, BIGNUM *value)  void buffer_put_bignum2(buffer_t *msg, BIGNUM *value)
186  {  {
187      unsigned int bytes;      unsigned int bytes;
# Line 189  void buffer_dump(FILE *fp, buffer_t *buf Line 237  void buffer_dump(FILE *fp, buffer_t *buf
237    
238  /*  /*
239   * $Log: not supported by cvs2svn $   * $Log: not supported by cvs2svn $
240     * Revision 1.2  2004/12/19 15:37:37  yutakakn
241     * CVS LogIDの追加
242     *
243   */   */
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