This is a classic/basic 'C' programming mistake you made, not an OpenSSL one:
pointers are not arrays are not strings ;-)
sizeof(buf) == ?
buf is of type 'char *' and therefore sizeof(buf) == sizeof(char *)
which is probably 4 or 8, depending on what platform you build this
for.
If you wish to provide the length of the C string data, pointed at by
pointer 'buf', then strlen() is your man:
either
BIO_puts(b, buf) -- which does this internally
or
BIO_write(b, buf, strlen(buf))
On Thu, May 28, 2009 at 10:15 AM, jaze lee <jaze...@gmail.com> wrote:
> hello,
> #include <openssl/bio.h>
> 2 int main() {
> 3 BIO * b;
> 4 char buf[100] = "hello world \n";
> 5 b = BIO_new(BIO_s_file());
> 6 BIO_set_fp(b, stdout, BIO_NOCLOSE);
> 7 BIO_write(b, buf, sizeof(buf));
> 8 return 0;
> 9 }
> after compile , and run, i can see the hello world
> but if the source code be changed like this
> 1 #include <openssl/bio.h>
> 2 int biotest(char * buf) {
> 3 BIO * b;
> 4 // char buf[100] = "hello world \n";
> 5 b = BIO_new(BIO_s_file());
> 6 BIO_set_fp(b, stdout, BIO_NOCLOSE);
> 7 BIO_write(b, buf, sizeof(buf));
> 8 return 0;
> 9 }
> 10 int main()
> 11 {
> 12 char buf[100] = "hello world\n";
> 13 biotest(buf);
> 14 return 0;
> 15 }
> compile and run, i can only see the hell on my terminal , who knows why, thank
> ______________________________________________________________________
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--
Met vriendelijke groeten / Best regards,
Ger Hobbelt
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