mirror of
https://github.com/openssl/openssl.git
synced 2024-11-21 01:15:20 +08:00
50 lines
1.2 KiB
C
50 lines
1.2 KiB
C
/* This is a simple example of using the base64 BIO to a memory BIO and then
|
|
* getting the data.
|
|
*/
|
|
#include <stdio.h>
|
|
#include <openssl/bio.h>
|
|
#include <openssl/evp.h>
|
|
|
|
main()
|
|
{
|
|
int i;
|
|
BIO *mbio,*b64bio,*bio;
|
|
char buf[512];
|
|
char *p;
|
|
|
|
mbio=BIO_new(BIO_s_mem());
|
|
b64bio=BIO_new(BIO_f_base64());
|
|
|
|
bio=BIO_push(b64bio,mbio);
|
|
/* We now have bio pointing at b64->mem, the base64 bio encodes on
|
|
* write and decodes on read */
|
|
|
|
for (;;)
|
|
{
|
|
i=fread(buf,1,512,stdin);
|
|
if (i <= 0) break;
|
|
BIO_write(bio,buf,i);
|
|
}
|
|
/* We need to 'flush' things to push out the encoding of the
|
|
* last few bytes. There is special encoding if it is not a
|
|
* multiple of 3
|
|
*/
|
|
BIO_flush(bio);
|
|
|
|
printf("We have %d bytes available\n",BIO_pending(mbio));
|
|
|
|
/* We will now get a pointer to the data and the number of elements. */
|
|
/* hmm... this one was not defined by a macro in bio.h, it will be for
|
|
* 0.9.1. The other option is too just read from the memory bio.
|
|
*/
|
|
i=(int)BIO_ctrl(mbio,BIO_CTRL_INFO,0,(char *)&p);
|
|
|
|
printf("%d\n",i);
|
|
fwrite("---\n",1,4,stdout);
|
|
fwrite(p,1,i,stdout);
|
|
fwrite("---\n",1,4,stdout);
|
|
|
|
/* This call will walk the chain freeing all the BIOs */
|
|
BIO_free_all(bio);
|
|
}
|