172 lines
2.7 KiB
C
172 lines
2.7 KiB
C
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#include <arpa/inet.h>
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#include "dtls_openssl.h"
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#include "conn.h"
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int dtls_openssl_bio_write(BIO *b, const char *data, int len)
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{
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// printf("bio_write %p %d",data,len);
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struct conn * conn = b->ptr;
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uint8_t buffer[2048];
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*((uint32_t*)buffer)=htonl(1<<24);
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memcpy(buffer+4,data,len);
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int rc = conn->send_packet(conn,buffer,len+4);
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if (rc<0)
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return rc;
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return rc-4;
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}
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int dtls_openssl_bio_read(BIO *b, char *out, int maxlen)
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{
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// printf("READER WHANT: %d\n",maxlen);
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struct conn * conn = b->ptr;
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struct dtls_openssl_data * dtls_data = conn->dtls_data;
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// int len;
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if (dtls_data->len==0){
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int len = conn->recv_packet(conn,dtls_data->buffer,2048);
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if (len<4)
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return 0;
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dtls_data->len=len-4;
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dtls_data->pos=4;
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// printf("DTLS_DATA_LEN: %d\n",dtls_data->len);
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}
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if (dtls_data->len > maxlen)
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{
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memcpy(out,dtls_data->buffer+dtls_data->pos,maxlen);
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dtls_data->len-=maxlen;
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dtls_data->pos+=maxlen;
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// printf("Return %d, %d beyes left\n",maxlen,dtls_data->len);
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return maxlen;
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}
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// printf("Return rest = %d\n",dtls_data->len);
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memcpy(out,dtls_data->buffer+dtls_data->pos,dtls_data->len);
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int ret = dtls_data->len;
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dtls_data->len=0;
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return ret;
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}
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int dtls_openssl_bio_new(BIO *bi)
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{
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bi->init = 1;
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bi->num = 0;
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bi->flags = 0;
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bi->ptr = NULL;
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return 1;
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}
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int dtls_openssl_bio_puts(BIO *b, const char *str)
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{
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return dtls_openssl_bio_write(b, str, strlen(str));
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}
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int dtls_openssl_bio_free(BIO *bio)
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{
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printf("Bio free\n");
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if (bio == NULL)
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return 0;
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return 1;
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}
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long dtls_openssl_bio_ctrl(BIO *b, int cmd, long num, void *ptr)
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{
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long ret = 1;
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// long sockopt_val = 0;
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// unsigned int sockopt_len = 0;
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// BIO_memory_data* pData = (BIO_memory_data*)b->ptr;
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//
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// printf("BIO CONTROL \n");
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// exit(1);
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switch (cmd)
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{
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case BIO_CTRL_RESET:
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case BIO_CTRL_EOF:
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ret = 0;
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break;
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case BIO_CTRL_INFO:
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ret = 0;
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break;
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case BIO_CTRL_GET_CLOSE:
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ret = 0;
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break;
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case BIO_CTRL_SET_CLOSE:
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break;
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case BIO_CTRL_WPENDING:
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ret = 0;
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break;
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case BIO_CTRL_PENDING:
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ret = 0;
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break;
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case BIO_CTRL_DUP:
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ret = 1;
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break;
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case BIO_CTRL_FLUSH:
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ret = 1;
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break;
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case BIO_CTRL_PUSH:
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ret = 0;
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break;
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case BIO_CTRL_POP:
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ret = 0;
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case BIO_CTRL_DGRAM_QUERY_MTU:
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{
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ret = 1000;
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/* sockopt_len = sizeof(sockopt_val);
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if ((ret = getsockopt(pData->sock, IPPROTO_IP, IP_MTU, (void *)&sockopt_val, &sockopt_len)) < 0 || sockopt_val < 0)
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{
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ret = 0;
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}
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else
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{
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pData->nMtu = sockopt_val;
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ret = sockopt_val;
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}
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break;
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*/ }
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case BIO_CTRL_DGRAM_GET_MTU:
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ret = 1000;
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// ret = pData->nMtu;
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break;
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case BIO_CTRL_DGRAM_SET_MTU:
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// pData->nMtu = num;
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// ret = num;
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break;
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default:
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ret = 0;
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break;
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}
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return ret;
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}
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