#include <stdio.h>
#include <errno.h>
#include "cryptlib.h"
-#include "buffer.h"
-#include "evp.h"
-
-#ifndef NOPROTO
-static int b64_write(BIO *h,char *buf,int num);
-static int b64_read(BIO *h,char *buf,int size);
-/*static int b64_puts(BIO *h,char *str); */
-/*static int b64_gets(BIO *h,char *str,int size); */
-static long b64_ctrl(BIO *h,int cmd,long arg1,char *arg2);
+#include <openssl/buffer.h>
+#include <openssl/evp.h>
+
+static int b64_write(BIO *h, const char *buf, int num);
+static int b64_read(BIO *h, char *buf, int size);
+static int b64_puts(BIO *h, const char *str);
+/*static int b64_gets(BIO *h, char *str, int size); */
+static long b64_ctrl(BIO *h, int cmd, long arg1, void *arg2);
static int b64_new(BIO *h);
static int b64_free(BIO *data);
-#else
-static int b64_write();
-static int b64_read();
-/*static int b64_puts(); */
-/*static int b64_gets(); */
-static long b64_ctrl();
-static int b64_new();
-static int b64_free();
-#endif
-
+static long b64_callback_ctrl(BIO *h,int cmd,bio_info_cb *fp);
#define B64_BLOCK_SIZE 1024
#define B64_BLOCK_SIZE2 768
#define B64_NONE 0
BIO_TYPE_BASE64,"base64 encoding",
b64_write,
b64_read,
- NULL, /* b64_puts, */
+ b64_puts,
NULL, /* b64_gets, */
b64_ctrl,
b64_new,
b64_free,
+ b64_callback_ctrl,
};
-BIO_METHOD *BIO_f_base64()
+BIO_METHOD *BIO_f_base64(void)
{
return(&methods_b64);
}
-static int b64_new(bi)
-BIO *bi;
+static int b64_new(BIO *bi)
{
BIO_B64_CTX *ctx;
- ctx=(BIO_B64_CTX *)Malloc(sizeof(BIO_B64_CTX));
+ ctx=(BIO_B64_CTX *)OPENSSL_malloc(sizeof(BIO_B64_CTX));
if (ctx == NULL) return(0);
ctx->buf_len=0;
bi->init=1;
bi->ptr=(char *)ctx;
bi->flags=0;
+ bi->num = 0;
return(1);
}
-static int b64_free(a)
-BIO *a;
+static int b64_free(BIO *a)
{
if (a == NULL) return(0);
- Free(a->ptr);
+ OPENSSL_free(a->ptr);
a->ptr=NULL;
a->init=0;
a->flags=0;
return(1);
}
-static int b64_read(b,out,outl)
-BIO *b;
-char *out;
-int outl;
+static int b64_read(BIO *b, char *out, int outl)
{
int ret=0,i,ii,j,k,x,n,num,ret_code=0;
BIO_B64_CTX *ctx;
if ((ctx == NULL) || (b->next_bio == NULL)) return(0);
+ BIO_clear_retry_flags(b);
+
if (ctx->encode != B64_DECODE)
{
ctx->encode=B64_DECODE;
/* First check if there are bytes decoded/encoded */
if (ctx->buf_len > 0)
{
+ OPENSSL_assert(ctx->buf_len >= ctx->buf_off);
i=ctx->buf_len-ctx->buf_off;
if (i > outl) i=outl;
+ OPENSSL_assert(ctx->buf_off+i < (int)sizeof(ctx->buf));
memcpy(out,&(ctx->buf[ctx->buf_off]),i);
ret=i;
out+=i;
ret_code=0;
while (outl > 0)
{
- if (ctx->cont <= 0) break;
+ if (ctx->cont <= 0)
+ break;
i=BIO_read(b->next_bio,&(ctx->tmp[ctx->tmp_len]),
B64_BLOCK_SIZE-ctx->tmp_len);
{
ret_code=i;
- /* Should be continue next time we are called? */
+ /* Should we continue next time we are called? */
if (!BIO_should_retry(b->next_bio))
+ {
ctx->cont=i;
- /* else we should continue when called again */
- break;
+ /* If buffer empty break */
+ if(ctx->tmp_len == 0)
+ break;
+ /* Fall through and process what we have */
+ else
+ i = 0;
+ }
+ /* else we retry and add more data to buffer */
+ else
+ break;
}
i+=ctx->tmp_len;
+ ctx->tmp_len = i;
/* We need to scan, a line at a time until we
* have a valid line if we are starting. */
&(ctx->tmp[0]));
for (x=0; x < i; x++)
ctx->tmp[x]=p[x];
- EVP_DecodeInit(&ctx->base64);
}
+ EVP_DecodeInit(&ctx->base64);
ctx->start=0;
break;
}
* reading until a new line. */
if (p == (unsigned char *)&(ctx->tmp[0]))
{
- ctx->tmp_nl=1;
- ctx->tmp_len=0;
+ /* Check buffer full */
+ if (i == B64_BLOCK_SIZE)
+ {
+ ctx->tmp_nl=1;
+ ctx->tmp_len=0;
+ }
}
else if (p != q) /* finished on a '\n' */
{
continue;
}
else
+ {
ctx->tmp_len=0;
}
+ }
+ else if ((i < B64_BLOCK_SIZE) && (ctx->cont > 0))
+ {
+ /* If buffer isn't full and we can retry then
+ * restart to read in more data.
+ */
+ continue;
+ }
if (BIO_get_flags(b) & BIO_FLAGS_BASE64_NO_NL)
{
int z,jj;
+#if 0
jj=(i>>2)<<2;
+#else
+ jj = i & ~3; /* process per 4 */
+#endif
z=EVP_DecodeBlock((unsigned char *)ctx->buf,
(unsigned char *)ctx->tmp,jj);
if (jj > 2)
* number consumed */
if (jj != i)
{
- memcpy((unsigned char *)ctx->tmp,
- (unsigned char *)&(ctx->tmp[jj]),i-jj);
+ memmove(ctx->tmp, &ctx->tmp[jj], i-jj);
ctx->tmp_len=i-jj;
}
ctx->buf_len=0;
if (z > 0)
{
ctx->buf_len=z;
- i=1;
}
- else
- i=z;
+ i=z;
}
else
{
i=EVP_DecodeUpdate(&(ctx->base64),
(unsigned char *)ctx->buf,&ctx->buf_len,
(unsigned char *)ctx->tmp,i);
+ ctx->tmp_len = 0;
}
- ctx->cont=i;
ctx->buf_off=0;
if (i < 0)
{
outl-=i;
out+=i;
}
- BIO_clear_retry_flags(b);
+ /* BIO_clear_retry_flags(b); */
BIO_copy_next_retry(b);
return((ret == 0)?ret_code:ret);
}
-static int b64_write(b,in,inl)
-BIO *b;
-char *in;
-int inl;
+static int b64_write(BIO *b, const char *in, int inl)
{
- int ret=inl,n,i;
+ int ret=0;
+ int n;
+ int i;
BIO_B64_CTX *ctx;
ctx=(BIO_B64_CTX *)b->ptr;
EVP_EncodeInit(&(ctx->base64));
}
+ OPENSSL_assert(ctx->buf_off < (int)sizeof(ctx->buf));
+ OPENSSL_assert(ctx->buf_len <= (int)sizeof(ctx->buf));
+ OPENSSL_assert(ctx->buf_len >= ctx->buf_off);
n=ctx->buf_len-ctx->buf_off;
while (n > 0)
{
BIO_copy_next_retry(b);
return(i);
}
+ OPENSSL_assert(i <= n);
ctx->buf_off+=i;
+ OPENSSL_assert(ctx->buf_off <= (int)sizeof(ctx->buf));
+ OPENSSL_assert(ctx->buf_len >= ctx->buf_off);
n-=i;
}
/* at this point all pending data has been written */
+ ctx->buf_off=0;
+ ctx->buf_len=0;
if ((in == NULL) || (inl <= 0)) return(0);
- ctx->buf_off=0;
while (inl > 0)
{
n=(inl > B64_BLOCK_SIZE)?B64_BLOCK_SIZE:inl;
{
if (ctx->tmp_len > 0)
{
+ OPENSSL_assert(ctx->tmp_len <= 3);
n=3-ctx->tmp_len;
+ /* There's a theoretical possibility for this */
+ if (n > inl)
+ n=inl;
memcpy(&(ctx->tmp[ctx->tmp_len]),in,n);
ctx->tmp_len+=n;
- n=ctx->tmp_len;
- if (n < 3)
+ ret += n;
+ if (ctx->tmp_len < 3)
break;
- ctx->buf_len=EVP_EncodeBlock(
- (unsigned char *)ctx->buf,
- (unsigned char *)ctx->tmp,n);
+ ctx->buf_len=EVP_EncodeBlock((unsigned char *)ctx->buf,(unsigned char *)ctx->tmp,ctx->tmp_len);
+ OPENSSL_assert(ctx->buf_len <= (int)sizeof(ctx->buf));
+ OPENSSL_assert(ctx->buf_len >= ctx->buf_off);
+ /* Since we're now done using the temporary
+ buffer, the length should be 0'd */
+ ctx->tmp_len=0;
}
else
{
if (n < 3)
{
- memcpy(&(ctx->tmp[0]),in,n);
+ memcpy(ctx->tmp,in,n);
ctx->tmp_len=n;
+ ret += n;
break;
}
n-=n%3;
- ctx->buf_len=EVP_EncodeBlock(
- (unsigned char *)ctx->buf,
- (unsigned char *)in,n);
+ ctx->buf_len=EVP_EncodeBlock((unsigned char *)ctx->buf,(const unsigned char *)in,n);
+ OPENSSL_assert(ctx->buf_len <= (int)sizeof(ctx->buf));
+ OPENSSL_assert(ctx->buf_len >= ctx->buf_off);
+ ret += n;
}
}
else
EVP_EncodeUpdate(&(ctx->base64),
(unsigned char *)ctx->buf,&ctx->buf_len,
(unsigned char *)in,n);
+ OPENSSL_assert(ctx->buf_len <= (int)sizeof(ctx->buf));
+ OPENSSL_assert(ctx->buf_len >= ctx->buf_off);
+ ret += n;
}
inl-=n;
in+=n;
BIO_copy_next_retry(b);
return((ret == 0)?i:ret);
}
+ OPENSSL_assert(i <= n);
n-=i;
ctx->buf_off+=i;
+ OPENSSL_assert(ctx->buf_off <= (int)sizeof(ctx->buf));
+ OPENSSL_assert(ctx->buf_len >= ctx->buf_off);
}
ctx->buf_len=0;
ctx->buf_off=0;
return(ret);
}
-static long b64_ctrl(b,cmd,num,ptr)
-BIO *b;
-int cmd;
-long num;
-char *ptr;
+static long b64_ctrl(BIO *b, int cmd, long num, void *ptr)
{
BIO_B64_CTX *ctx;
long ret=1;
ret=BIO_ctrl(b->next_bio,cmd,num,ptr);
break;
case BIO_CTRL_WPENDING: /* More to write in buffer */
+ OPENSSL_assert(ctx->buf_len >= ctx->buf_off);
ret=ctx->buf_len-ctx->buf_off;
- if ((ret == 0) && (ctx->base64.num != 0))
+ if ((ret == 0) && (ctx->encode != B64_NONE)
+ && (ctx->base64.num != 0))
ret=1;
else if (ret <= 0)
ret=BIO_ctrl(b->next_bio,cmd,num,ptr);
break;
case BIO_CTRL_PENDING: /* More to read in buffer */
+ OPENSSL_assert(ctx->buf_len >= ctx->buf_off);
ret=ctx->buf_len-ctx->buf_off;
if (ret <= 0)
ret=BIO_ctrl(b->next_bio,cmd,num,ptr);
{
i=b64_write(b,NULL,0);
if (i < 0)
- {
- ret=i;
- break;
- }
+ return i;
}
if (BIO_get_flags(b) & BIO_FLAGS_BASE64_NO_NL)
{
goto again;
}
}
- else if (ctx->base64.num != 0)
+ else if (ctx->encode != B64_NONE && ctx->base64.num != 0)
{
ctx->buf_off=0;
EVP_EncodeFinal(&(ctx->base64),
return(ret);
}
+static long b64_callback_ctrl(BIO *b, int cmd, bio_info_cb *fp)
+ {
+ long ret=1;
+
+ if (b->next_bio == NULL) return(0);
+ switch (cmd)
+ {
+ default:
+ ret=BIO_callback_ctrl(b->next_bio,cmd,fp);
+ break;
+ }
+ return(ret);
+ }
+
+static int b64_puts(BIO *b, const char *str)
+ {
+ return b64_write(b,str,strlen(str));
+ }
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