Hi All,
I'm trying to decode a base64 encoded string. The problem I'm running in to is
that BIO_read() always returns 0. BIO_should_retry() and BIO_should_read()
also return 0 when BIO_read() returns 0. If the base64 encoded string is
shortened, BIO_read returns the decoded information. I get this result using
OpenSSL 0.9.8k (cross-compiled for a Blackfin processor) and OpenSSL 0.9.8g on
Ubuntu 9.04.
Any suggestions on what I'm doing wrong?
Thanks,
...doug
---8<-----
/*
* Compiled with: gcc -Wall -lssl
*/
#include <openssl/bio.h>
#include <openssl/evp.h>
#include <stdio.h>
#include <string.h>
int main(int argc, char **argv)
{
#if 1
/*
* This does not work
*/
char *message =
"Tm8gaXMgdGhlIHRpbWUgZm9yIGFsbCBnb29kIG1lbiB0byBjb21lIHRvIHRoZSBhaWQgb2YgdGhlaXIgY291bnRyeS4NClRoZSBxdWljayBicm93biBmb3gganVtcGVkIG92ZXIgdGhlIGxhenkgZG9nJ3MgYmFjayAwMTIzNDU2Nzg5Lg==\n";
#endif
#if 0
/*
* This shortened version works
*/
char *message = "Tm8gaXMgdGhlIHRpbWUgZm9yIGFsbCBnb29kIG1lbiB0by==\n";
#endif
BIO *b64, *bio, *bmem;
char *buf;
int i = strlen(message);
buf = malloc(i);
if (!buf) {
printf("malloc fail, %m\n");
return -1;
}
bmem = BIO_new_mem_buf((void*)message, -1);
b64 = BIO_new(BIO_f_base64());
BIO_set_flags(bmem, BIO_FLAGS_BASE64_NO_NL);
bio = BIO_push(b64, bmem);
i = BIO_read(bio, (void*)buf, i);
buf[i] = '\0';
BIO_free_all(bio);
printf("%s\n%s\n", message, buf);
return 0;
}
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