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dfeab068 RE |
1 | /* This is a simple example of using the base64 BIO to a memory BIO and then |
2 | * getting the data. | |
3 | */ | |
4 | #include <stdio.h> | |
ec577822 BM |
5 | #include <openssl/bio.h> |
6 | #include <openssl/evp.h> | |
dfeab068 RE |
7 | |
8 | main() | |
9 | { | |
10 | int i; | |
11 | BIO *mbio,*b64bio,*bio; | |
12 | char buf[512]; | |
13 | char *p; | |
14 | ||
15 | mbio=BIO_new(BIO_s_mem()); | |
16 | b64bio=BIO_new(BIO_f_base64()); | |
17 | ||
18 | bio=BIO_push(b64bio,mbio); | |
19 | /* We now have bio pointing at b64->mem, the base64 bio encodes on | |
20 | * write and decodes on read */ | |
21 | ||
22 | for (;;) | |
23 | { | |
24 | i=fread(buf,1,512,stdin); | |
25 | if (i <= 0) break; | |
26 | BIO_write(bio,buf,i); | |
27 | } | |
28 | /* We need to 'flush' things to push out the encoding of the | |
29 | * last few bytes. There is special encoding if it is not a | |
30 | * multiple of 3 | |
31 | */ | |
32 | BIO_flush(bio); | |
33 | ||
34 | printf("We have %d bytes available\n",BIO_pending(mbio)); | |
35 | ||
36 | /* We will now get a pointer to the data and the number of elements. */ | |
37 | /* hmm... this one was not defined by a macro in bio.h, it will be for | |
38 | * 0.9.1. The other option is too just read from the memory bio. | |
39 | */ | |
40 | i=(int)BIO_ctrl(mbio,BIO_CTRL_INFO,0,(char *)&p); | |
41 | ||
42 | printf("%d\n",i); | |
43 | fwrite("---\n",1,4,stdout); | |
44 | fwrite(p,1,i,stdout); | |
45 | fwrite("---\n",1,4,stdout); | |
46 | ||
47 | /* This call will walk the chain freeing all the BIOs */ | |
48 | BIO_free_all(bio); | |
49 | } |