third-party libs

third-party/openssl-1.0.0d/demos/eay/base64.c

@@ -0,0 +1,49 @@
+/* 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);
+	}