Goodmorning,
i'm trying to write an easy program to test the base64 BIO filter but
it seems it doesn't work.
In particular if i push the bio64, i read a little amount of data and
i pop the bio64 the read in the middle fail ( return 0 ).
This doens't happen if the text to read is a lot.
This is a little example:
#include <openssl/evp.h>
#include <stdio.h>
#include <string.h>
int main()
{
BIO *in, *out, *b64;
char str[50];
int str_len;
out=BIO_new(BIO_s_file());
BIO_write_filename(out,"./file");
b64=BIO_new(BIO_f_base64());
BIO_puts(out,"FIRST STRING\n");
out=BIO_push(b64,out);
BIO_write(out,"short string\n",strlen("short string\n"));
BIO_flush(out);
out=BIO_pop(b64);
BIO_puts(out,"SECOND STRING\n");
out=BIO_push(b64,out);
BIO_write(out,"short string\n",strlen("short string\n"));
BIO_flush(out);
out=BIO_pop(b64);
BIO_free(out);
system("pause");
in=BIO_new(BIO_s_file());
BIO_read_filename(in,"./file");
str_len=BIO_read(in,str,strlen("PRIMA STRINGA\n"));
printf("\n%s - %d\n",str,str_len);
in=BIO_push(b64,in);
str_len=BIO_read(in,str,strlen("stringa di prova\n")); //this
read returns 0
printf("\n%s - %d\n",str,str_len);
in=BIO_pop(b64);
BIO_read(in,str,strlen("SECONDA STRINGA\n"));
in=BIO_push(b64,in);
BIO_read(in,str,strlen("stringa di prova\n")); //this read
returns 0
in=BIO_pop(b64);
printf("\n%s\n",str);
}
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