/* crypto/bio/bss_mem.c */
-/* Copyright (C) 1995-1997 Eric Young (eay@cryptsoft.com)
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
* All rights reserved.
*
* This package is an SSL implementation written
#include <stdio.h>
#include <errno.h>
#include "cryptlib.h"
-#include "bio.h"
+#include <openssl/bio.h>
-#ifndef NOPROTO
-static int mem_write(BIO *h,char *buf,int num);
-static int mem_read(BIO *h,char *buf,int size);
-static int mem_puts(BIO *h,char *str);
-static int mem_gets(BIO *h,char *str,int size);
-static long mem_ctrl(BIO *h,int cmd,long arg1,char *arg2);
+static int mem_write(BIO *h, const char *buf, int num);
+static int mem_read(BIO *h, char *buf, int size);
+static int mem_puts(BIO *h, const char *str);
+static int mem_gets(BIO *h, char *str, int size);
+static long mem_ctrl(BIO *h, int cmd, long arg1, void *arg2);
static int mem_new(BIO *h);
static int mem_free(BIO *data);
-#else
-static int mem_write();
-static int mem_read();
-static int mem_puts();
-static int mem_gets();
-static long mem_ctrl();
-static int mem_new();
-static int mem_free();
-#endif
-
static BIO_METHOD mem_method=
{
- BIO_TYPE_MEM,"memory buffer",
+ BIO_TYPE_MEM,
+ "memory buffer",
mem_write,
mem_read,
mem_puts,
mem_ctrl,
mem_new,
mem_free,
+ NULL,
};
-BIO_METHOD *BIO_s_mem()
+/* bio->num is used to hold the value to return on 'empty', if it is
+ * 0, should_retry is not set */
+
+BIO_METHOD *BIO_s_mem(void)
{
return(&mem_method);
}
-static int mem_new(bi)
-BIO *bi;
+BIO *BIO_new_mem_buf(void *buf, int len)
+{
+ BIO *ret;
+ BUF_MEM *b;
+ size_t sz;
+
+ if (!buf) {
+ BIOerr(BIO_F_BIO_NEW_MEM_BUF,BIO_R_NULL_PARAMETER);
+ return NULL;
+ }
+ sz = (len<0) ? strlen(buf) : len;
+ if(!(ret = BIO_new(BIO_s_mem())) ) return NULL;
+ b = (BUF_MEM *)ret->ptr;
+ b->data = buf;
+ b->length = sz;
+ b->max = sz;
+ ret->flags |= BIO_FLAGS_MEM_RDONLY;
+ /* Since this is static data retrying wont help */
+ ret->num = 0;
+ return ret;
+}
+
+static int mem_new(BIO *bi)
{
BUF_MEM *b;
return(0);
bi->shutdown=1;
bi->init=1;
- bi->num=0;
+ bi->num= -1;
bi->ptr=(char *)b;
return(1);
}
-static int mem_free(a)
-BIO *a;
+static int mem_free(BIO *a)
{
if (a == NULL) return(0);
if (a->shutdown)
{
if ((a->init) && (a->ptr != NULL))
{
- BUF_MEM_free((BUF_MEM *)a->ptr);
+ BUF_MEM *b;
+ b = (BUF_MEM *)a->ptr;
+ if(a->flags & BIO_FLAGS_MEM_RDONLY) b->data = NULL;
+ BUF_MEM_free(b);
a->ptr=NULL;
}
}
return(1);
}
-static int mem_read(b,out,outl)
-BIO *b;
-char *out;
-int outl;
+static int mem_read(BIO *b, char *out, int outl)
{
int ret= -1;
BUF_MEM *bm;
- int i;
- char *from,*to;
bm=(BUF_MEM *)b->ptr;
BIO_clear_retry_flags(b);
- ret=(outl > bm->length)?bm->length:outl;
- if ((out != NULL) && (ret > 0))
- {
+ ret=(outl >=0 && (size_t)outl > bm->length)?bm->length:outl;
+ if ((out != NULL) && (ret > 0)) {
memcpy(out,bm->data,ret);
bm->length-=ret;
- /* memmove(&(bm->data[0]),&(bm->data[ret]), bm->length); */
- from=(char *)&(bm->data[ret]);
- to=(char *)&(bm->data[0]);
- for (i=0; i<bm->length; i++)
- to[i]=from[i];
+ if(b->flags & BIO_FLAGS_MEM_RDONLY) bm->data += ret;
+ else {
+ memmove(&(bm->data[0]),&(bm->data[ret]),bm->length);
}
- else if (bm->length == 0)
+ } else if (bm->length == 0)
{
- BIO_set_retry_read(b);
- ret= -1;
+ ret = b->num;
+ if (ret != 0)
+ BIO_set_retry_read(b);
}
return(ret);
}
-static int mem_write(b,in,inl)
-BIO *b;
-char *in;
-int inl;
+static int mem_write(BIO *b, const char *in, int inl)
{
int ret= -1;
int blen;
goto end;
}
+ if(b->flags & BIO_FLAGS_MEM_RDONLY) {
+ BIOerr(BIO_F_MEM_WRITE,BIO_R_WRITE_TO_READ_ONLY_BIO);
+ goto end;
+ }
+
BIO_clear_retry_flags(b);
blen=bm->length;
- if (BUF_MEM_grow(bm,blen+inl) != (blen+inl))
+ if (BUF_MEM_grow_clean(bm,blen+inl) != (blen+inl))
goto end;
memcpy(&(bm->data[blen]),in,inl);
ret=inl;
return(ret);
}
-static long mem_ctrl(b,cmd,num,ptr)
-BIO *b;
-int cmd;
-long num;
-char *ptr;
+static long mem_ctrl(BIO *b, int cmd, long num, void *ptr)
{
long ret=1;
char **pptr;
{
case BIO_CTRL_RESET:
if (bm->data != NULL)
- memset(bm->data,0,bm->max);
- bm->length=0;
+ {
+ /* For read only case reset to the start again */
+ if(b->flags & BIO_FLAGS_MEM_RDONLY)
+ {
+ bm->data -= bm->max - bm->length;
+ bm->length = bm->max;
+ }
+ else
+ {
+ memset(bm->data,0,bm->max);
+ bm->length=0;
+ }
+ }
break;
case BIO_CTRL_EOF:
ret=(long)(bm->length == 0);
break;
+ case BIO_C_SET_BUF_MEM_EOF_RETURN:
+ b->num=(int)num;
+ break;
case BIO_CTRL_INFO:
ret=(long)bm->length;
if (ptr != NULL)
return(ret);
}
-static int mem_gets(bp,buf,size)
-BIO *bp;
-char *buf;
-int size;
+static int mem_gets(BIO *bp, char *buf, int size)
{
int i,j;
int ret= -1;
BIO_clear_retry_flags(bp);
j=bm->length;
- if (j <= 0) return(0);
+ if (j <= 0)
+ {
+ *buf='\0';
+ return 0;
+ }
p=bm->data;
for (i=0; i<j; i++)
{
return(ret);
}
-static int mem_puts(bp,str)
-BIO *bp;
-char *str;
+static int mem_puts(BIO *bp, const char *str)
{
int n,ret;
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