Import of old SSLeay release: SSLeay 0.9.1b (unreleased)

[openssl.git] / demos / eay / base64.c

diff --git a/demos/eay/base64.c b/demos/eay/base64.c
new file mode 100644 (file)
index 0000000..de080f6
--- /dev/null
+++ b/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 "bio.h"
+#include "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);
+       }