-#include "crypto.h"
-#include "cryptlib.h"
-#include "bio.h"
-#include "stack.h"
-
-static STACK *bio_meth=NULL;
-static int bio_meth_num=0;
-
-BIO *BIO_new(method)
-BIO_METHOD *method;
- {
- BIO *ret=NULL;
-
- ret=(BIO *)Malloc(sizeof(BIO));
- if (ret == NULL)
- {
- BIOerr(BIO_F_BIO_NEW,ERR_R_MALLOC_FAILURE);
- return(NULL);
- }
- if (!BIO_set(ret,method))
- {
- Free(ret);
- ret=NULL;
- }
- return(ret);
- }
-
-int BIO_set(bio,method)
-BIO *bio;
-BIO_METHOD *method;
- {
- bio->method=method;
- bio->callback=NULL;
- bio->cb_arg=NULL;
- bio->init=0;
- bio->shutdown=1;
- bio->flags=0;
- bio->retry_reason=0;
- bio->num=0;
- bio->ptr=NULL;
- bio->prev_bio=NULL;
- bio->next_bio=NULL;
- bio->references=1;
- bio->num_read=0L;
- bio->num_write=0L;
- CRYPTO_new_ex_data(bio_meth,(char *)bio,&bio->ex_data);
- if (method->create != NULL)
- if (!method->create(bio))
- return(0);
- return(1);
- }
-
-int BIO_free(a)
-BIO *a;
- {
- int ret=0,i;
-
- if (a == NULL) return(0);
-
- i=CRYPTO_add(&a->references,-1,CRYPTO_LOCK_BIO);
-#ifdef REF_PRINT
- REF_PRINT("BIO",a);
-#endif
- if (i > 0) return(1);
-#ifdef REF_CHECK
- if (i < 0)
- {
- fprintf(stderr,"BIO_free, bad reference count\n");
- abort();
- }
-#endif
- if ((a->callback != NULL) &&
- ((i=(int)a->callback(a,BIO_CB_FREE,NULL,0,0L,1L)) <= 0))
- return(i);
-
- CRYPTO_free_ex_data(bio_meth,(char *)a,&a->ex_data);
-
- if ((a->method == NULL) || (a->method->destroy == NULL)) return(1);
- ret=a->method->destroy(a);
- Free(a);
- return(1);
- }
-
-int BIO_read(b,out,outl)
-BIO *b;
-char *out;
-int outl;
- {
- int i;
- long (*cb)();
-
- if ((b == NULL) || (b->method == NULL) || (b->method->bread == NULL))
- {
- BIOerr(BIO_F_BIO_READ,BIO_R_UNSUPPORTED_METHOD);
- return(-2);
- }
-
- cb=b->callback;
- if ((cb != NULL) &&
- ((i=(int)cb(b,BIO_CB_READ,out,outl,0L,1L)) <= 0))
- return(i);
-
- if (!b->init)
- {
- BIOerr(BIO_F_BIO_READ,BIO_R_UNINITIALIZED);
- return(-2);
- }
-
- i=b->method->bread(b,out,outl);
-
- if (i > 0) b->num_read+=(unsigned long)i;
-
- if (cb != NULL)
- i=(int)cb(b,BIO_CB_READ|BIO_CB_RETURN,out,outl,
- 0L,(long)i);
- return(i);
- }
-
-int BIO_write(b,in,inl)
-BIO *b;
-const char *in;
-int inl;
- {
- int i;
- long (*cb)();
-
- if (b == NULL)
- return(0);
-
- cb=b->callback;
- if ((b->method == NULL) || (b->method->bwrite == NULL))
- {
- BIOerr(BIO_F_BIO_WRITE,BIO_R_UNSUPPORTED_METHOD);
- return(-2);
- }
-
- if ((cb != NULL) &&
- ((i=(int)cb(b,BIO_CB_WRITE,in,inl,0L,1L)) <= 0))
- return(i);
-
- if (!b->init)
- {
- BIOerr(BIO_F_BIO_WRITE,BIO_R_UNINITIALIZED);
- return(-2);
- }
-
- i=b->method->bwrite(b,in,inl);
-
- if (i > 0) b->num_write+=(unsigned long)i;
-
- /* This is evil and not thread safe. If the BIO has been freed,
- * we must not call the callback. The only way to be able to
- * determine this is the reference count which is now invalid since
- * the memory has been free()ed.
- */
- if (b->references <= 0) abort();
- if (cb != NULL) /* && (b->references >= 1)) */
- i=(int)cb(b,BIO_CB_WRITE|BIO_CB_RETURN,in,inl,
- 0L,(long)i);
- return(i);
- }
-
-int BIO_puts(b,in)
-BIO *b;
-const char *in;
- {
- int i;
- long (*cb)();
-
- if ((b == NULL) || (b->method == NULL) || (b->method->bputs == NULL))
- {
- BIOerr(BIO_F_BIO_PUTS,BIO_R_UNSUPPORTED_METHOD);
- return(-2);
- }
-
- cb=b->callback;
-
- if ((cb != NULL) &&
- ((i=(int)cb(b,BIO_CB_PUTS,in,0,0L,1L)) <= 0))
- return(i);
-
- if (!b->init)
- {
- BIOerr(BIO_F_BIO_PUTS,BIO_R_UNINITIALIZED);
- return(-2);
- }
-
- i=b->method->bputs(b,in);
-
- if (cb != NULL)
- i=(int)cb(b,BIO_CB_PUTS|BIO_CB_RETURN,in,0,
- 0L,(long)i);
- return(i);
- }
-
-int BIO_gets(b,in,inl)
-BIO *b;
-char *in;
-int inl;
- {
- int i;
- long (*cb)();
-
- if ((b == NULL) || (b->method == NULL) || (b->method->bgets == NULL))
- {
- BIOerr(BIO_F_BIO_GETS,BIO_R_UNSUPPORTED_METHOD);
- return(-2);
- }
-
- cb=b->callback;
-
- if ((cb != NULL) &&
- ((i=(int)cb(b,BIO_CB_GETS,in,inl,0L,1L)) <= 0))
- return(i);
-
- if (!b->init)
- {
- BIOerr(BIO_F_BIO_GETS,BIO_R_UNINITIALIZED);
- return(-2);
- }
-
- i=b->method->bgets(b,in,inl);
-
- if (cb != NULL)
- i=(int)cb(b,BIO_CB_GETS|BIO_CB_RETURN,in,inl,
- 0L,(long)i);
- return(i);
- }
-
-long BIO_int_ctrl(b,cmd,larg,iarg)
-BIO *b;
-int cmd;
-long larg;
-int iarg;
- {
- int i;
-
- i=iarg;
- return(BIO_ctrl(b,cmd,larg,(char *)&i));
- }
-
-char *BIO_ptr_ctrl(b,cmd,larg)
-BIO *b;
-int cmd;
-long larg;
- {
- char *p=NULL;
-
- if (BIO_ctrl(b,cmd,larg,(char *)&p) <= 0)
- return(NULL);
- else
- return(p);
- }
-
-long BIO_ctrl(b,cmd,larg,parg)
-BIO *b;
-int cmd;
-long larg;
-char *parg;
- {
- long ret;
- long (*cb)();
-
- if (b == NULL) return(0);
-
- if ((b->method == NULL) || (b->method->ctrl == NULL))
- {
- BIOerr(BIO_F_BIO_CTRL,BIO_R_UNSUPPORTED_METHOD);
- return(-2);
- }
-
- cb=b->callback;
-
- if ((cb != NULL) &&
- ((ret=cb(b,BIO_CB_CTRL,parg,cmd,larg,1L)) <= 0))
- return(ret);
-
- ret=b->method->ctrl(b,cmd,larg,parg);
-
- if (cb != NULL)
- ret=cb(b,BIO_CB_CTRL|BIO_CB_RETURN,parg,cmd,
- larg,ret);
- return(ret);
- }
+#include <openssl/crypto.h>
+#include "bio_lcl.h"
+#include "internal/cryptlib.h"
+
+
+/*
+ * Helper macro for the callback to determine whether an operator expects a
+ * len parameter or not
+ */
+#define HAS_LEN_OPER(o) ((o) == BIO_CB_READ || (o) == BIO_CB_WRITE || \
+ (o) == BIO_CB_GETS)
+
+/*
+ * Helper function to work out whether to call the new style callback or the old
+ * one, and translate between the two.
+ *
+ * This has a long return type for consistency with the old callback. Similarly
+ * for the "long" used for "inret"
+ */
+static long bio_call_callback(BIO *b, int oper, const char *argp, size_t len,
+ int argi, long argl, long inret, size_t *processed)
+{
+ long ret;
+ int bareoper;
+
+ if (b->callback_ex != NULL)
+ return b->callback_ex(b, oper, argp, len, argi, argl, inret, processed);
+
+ /* Strip off any BIO_CB_RETURN flag */
+ bareoper = oper & ~BIO_CB_RETURN;
+
+ /*
+ * We have an old style callback, so we will have to do nasty casts and
+ * check for overflows.
+ */
+ if (HAS_LEN_OPER(bareoper)) {
+ /* In this case |len| is set, and should be used instead of |argi| */
+ if (len > INT_MAX)
+ return -1;
+
+ argi = (int)len;
+ }
+
+ if (inret > 0 && (oper & BIO_CB_RETURN) && bareoper != BIO_CB_CTRL) {
+ if (*processed > INT_MAX)
+ return -1;
+ inret = *processed;
+ }
+
+ ret = b->callback(b, oper, argp, argi, argl, inret);
+
+ if (ret > 0 && (oper & BIO_CB_RETURN) && bareoper != BIO_CB_CTRL) {
+ *processed = (size_t)ret;
+ ret = 1;
+ }
+
+ return ret;
+}
+
+BIO *BIO_new(const BIO_METHOD *method)
+{
+ BIO *bio = OPENSSL_zalloc(sizeof(*bio));
+
+ if (bio == NULL) {
+ BIOerr(BIO_F_BIO_NEW, ERR_R_MALLOC_FAILURE);
+ return NULL;
+ }
+
+ bio->method = method;
+ bio->shutdown = 1;
+ bio->references = 1;
+
+ if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_BIO, bio, &bio->ex_data))
+ goto err;
+
+ bio->lock = CRYPTO_THREAD_lock_new();
+ if (bio->lock == NULL) {
+ BIOerr(BIO_F_BIO_NEW, ERR_R_MALLOC_FAILURE);
+ CRYPTO_free_ex_data(CRYPTO_EX_INDEX_BIO, bio, &bio->ex_data);
+ goto err;
+ }
+
+ if (method->create != NULL && !method->create(bio)) {
+ BIOerr(BIO_F_BIO_NEW, ERR_R_INIT_FAIL);
+ CRYPTO_free_ex_data(CRYPTO_EX_INDEX_BIO, bio, &bio->ex_data);
+ CRYPTO_THREAD_lock_free(bio->lock);
+ goto err;
+ }
+ if (method->create == NULL)
+ bio->init = 1;
+
+ return bio;
+
+err:
+ OPENSSL_free(bio);
+ return NULL;
+}
+
+int BIO_free(BIO *a)
+{
+ int ret;
+
+ if (a == NULL)
+ return 0;
+
+ if (CRYPTO_DOWN_REF(&a->references, &ret, a->lock) <= 0)
+ return 0;
+
+ REF_PRINT_COUNT("BIO", a);
+ if (ret > 0)
+ return 1;
+ REF_ASSERT_ISNT(ret < 0);
+
+ if (a->callback != NULL || a->callback_ex != NULL) {
+ ret = (int)bio_call_callback(a, BIO_CB_FREE, NULL, 0, 0, 0L, 1L, NULL);
+ if (ret <= 0)
+ return ret;
+ }
+
+ if ((a->method != NULL) && (a->method->destroy != NULL))
+ a->method->destroy(a);
+
+ CRYPTO_free_ex_data(CRYPTO_EX_INDEX_BIO, a, &a->ex_data);
+
+ CRYPTO_THREAD_lock_free(a->lock);
+
+ OPENSSL_free(a);
+
+ return 1;
+}
+
+void BIO_set_data(BIO *a, void *ptr)
+{
+ a->ptr = ptr;
+}
+
+void *BIO_get_data(BIO *a)
+{
+ return a->ptr;
+}
+
+void BIO_set_init(BIO *a, int init)
+{
+ a->init = init;
+}
+
+int BIO_get_init(BIO *a)
+{
+ return a->init;
+}
+
+void BIO_set_shutdown(BIO *a, int shut)
+{
+ a->shutdown = shut;
+}
+
+int BIO_get_shutdown(BIO *a)
+{
+ return a->shutdown;
+}
+
+void BIO_vfree(BIO *a)
+{
+ BIO_free(a);
+}
+
+int BIO_up_ref(BIO *a)
+{
+ int i;
+
+ if (CRYPTO_UP_REF(&a->references, &i, a->lock) <= 0)
+ return 0;
+
+ REF_PRINT_COUNT("BIO", a);
+ REF_ASSERT_ISNT(i < 2);
+ return ((i > 1) ? 1 : 0);
+}
+
+void BIO_clear_flags(BIO *b, int flags)
+{
+ b->flags &= ~flags;
+}
+
+int BIO_test_flags(const BIO *b, int flags)
+{
+ return (b->flags & flags);
+}
+
+void BIO_set_flags(BIO *b, int flags)
+{
+ b->flags |= flags;
+}
+
+BIO_callback_fn BIO_get_callback(const BIO *b)
+{
+ return b->callback;
+}
+
+void BIO_set_callback(BIO *b, BIO_callback_fn cb)
+{
+ b->callback = cb;
+}
+
+BIO_callback_fn_ex BIO_get_callback_ex(const BIO *b)
+{
+ return b->callback_ex;
+}
+
+void BIO_set_callback_ex(BIO *b, BIO_callback_fn_ex cb)
+{
+ b->callback_ex = cb;
+}
+
+void BIO_set_callback_arg(BIO *b, char *arg)
+{
+ b->cb_arg = arg;
+}
+
+char *BIO_get_callback_arg(const BIO *b)
+{
+ return b->cb_arg;
+}
+
+const char *BIO_method_name(const BIO *b)
+{
+ return b->method->name;
+}
+
+int BIO_method_type(const BIO *b)
+{
+ return b->method->type;
+}
+
+/*
+ * This is essentially the same as BIO_read_ex() except that it allows
+ * 0 or a negative value to indicate failure (retryable or not) in the return.
+ * This is for compatibility with the old style BIO_read(), where existing code
+ * may make assumptions about the return value that it might get.
+ */
+static int bio_read_intern(BIO *b, void *data, size_t dlen, size_t *readbytes)
+{
+ int ret;
+
+ if ((b == NULL) || (b->method == NULL) || (b->method->bread == NULL)) {
+ BIOerr(BIO_F_BIO_READ_INTERN, BIO_R_UNSUPPORTED_METHOD);
+ return -2;
+ }
+
+ if ((b->callback != NULL || b->callback_ex != NULL) &&
+ ((ret = (int)bio_call_callback(b, BIO_CB_READ, data, dlen, 0, 0L, 1L,
+ NULL)) <= 0))
+ return ret;
+
+ if (!b->init) {
+ BIOerr(BIO_F_BIO_READ_INTERN, BIO_R_UNINITIALIZED);
+ return -2;
+ }
+
+ ret = b->method->bread(b, data, dlen, readbytes);
+
+ if (ret > 0)
+ b->num_read += (uint64_t)*readbytes;
+
+ if (b->callback != NULL || b->callback_ex != NULL)
+ ret = (int)bio_call_callback(b, BIO_CB_READ | BIO_CB_RETURN, data,
+ dlen, 0, 0L, ret, readbytes);
+
+ /* Shouldn't happen */
+ if (ret > 0 && *readbytes > dlen) {
+ BIOerr(BIO_F_BIO_READ_INTERN, ERR_R_INTERNAL_ERROR);
+ return -1;
+ }
+
+ return ret;
+}
+
+int BIO_read(BIO *b, void *data, int dlen)
+{
+ size_t readbytes;
+ int ret;
+
+ if (dlen < 0)
+ return 0;
+
+ ret = bio_read_intern(b, data, (size_t)dlen, &readbytes);
+
+ if (ret > 0) {
+ /* *readbytes should always be <= dlen */
+ ret = (int)readbytes;
+ }
+
+ return ret;
+}
+
+int BIO_read_ex(BIO *b, void *data, size_t dlen, size_t *readbytes)
+{
+ int ret;
+
+ ret = bio_read_intern(b, data, dlen, readbytes);
+
+ if (ret > 0)
+ ret = 1;
+ else
+ ret = 0;
+
+ return ret;
+}
+
+static int bio_write_intern(BIO *b, const void *data, size_t dlen,
+ size_t *written)
+{
+ int ret;
+
+ if (b == NULL)
+ return 0;
+
+ if ((b->method == NULL) || (b->method->bwrite == NULL)) {
+ BIOerr(BIO_F_BIO_WRITE_INTERN, BIO_R_UNSUPPORTED_METHOD);
+ return -2;
+ }
+
+ if ((b->callback != NULL || b->callback_ex != NULL) &&
+ ((ret = (int)bio_call_callback(b, BIO_CB_WRITE, data, dlen, 0, 0L, 1L,
+ NULL)) <= 0))
+ return ret;
+
+ if (!b->init) {
+ BIOerr(BIO_F_BIO_WRITE_INTERN, BIO_R_UNINITIALIZED);
+ return -2;
+ }
+
+ ret = b->method->bwrite(b, data, dlen, written);
+
+ if (ret > 0)
+ b->num_write += (uint64_t)*written;
+
+ if (b->callback != NULL || b->callback_ex != NULL)
+ ret = (int)bio_call_callback(b, BIO_CB_WRITE | BIO_CB_RETURN, data,
+ dlen, 0, 0L, ret, written);
+
+ return ret;
+}
+
+int BIO_write(BIO *b, const void *data, int dlen)
+{
+ size_t written;
+ int ret;
+
+ if (dlen < 0)
+ return 0;
+
+ ret = bio_write_intern(b, data, (size_t)dlen, &written);
+
+ if (ret > 0) {
+ /* *written should always be <= dlen */
+ ret = (int)written;
+ }
+
+ return ret;
+}
+
+int BIO_write_ex(BIO *b, const void *data, size_t dlen, size_t *written)
+{
+ int ret;
+
+ ret = bio_write_intern(b, data, dlen, written);
+
+ if (ret > 0)
+ ret = 1;
+ else
+ ret = 0;
+
+ return ret;
+}
+
+int BIO_puts(BIO *b, const char *buf)
+{
+ int ret;
+ size_t written = 0;
+
+ if ((b == NULL) || (b->method == NULL) || (b->method->bputs == NULL)) {
+ BIOerr(BIO_F_BIO_PUTS, BIO_R_UNSUPPORTED_METHOD);
+ return -2;
+ }
+
+ if (b->callback != NULL || b->callback_ex != NULL) {
+ ret = (int)bio_call_callback(b, BIO_CB_PUTS, buf, 0, 0, 0L, 1L, NULL);
+ if (ret <= 0)
+ return ret;
+ }
+
+ if (!b->init) {
+ BIOerr(BIO_F_BIO_PUTS, BIO_R_UNINITIALIZED);
+ return -2;
+ }
+
+ ret = b->method->bputs(b, buf);
+
+ if (ret > 0) {
+ b->num_write += (uint64_t)ret;
+ written = ret;
+ ret = 1;
+ }
+
+ if (b->callback != NULL || b->callback_ex != NULL)
+ ret = (int)bio_call_callback(b, BIO_CB_PUTS | BIO_CB_RETURN, buf, 0, 0,
+ 0L, ret, &written);
+
+ if (ret > 0) {
+ if (written > INT_MAX) {
+ BIOerr(BIO_F_BIO_PUTS, BIO_R_LENGTH_TOO_LONG);
+ ret = -1;
+ } else {
+ ret = (int)written;
+ }
+ }
+
+ return ret;
+}
+
+int BIO_gets(BIO *b, char *buf, int size)
+{
+ int ret;
+ size_t readbytes = 0;
+
+ if ((b == NULL) || (b->method == NULL) || (b->method->bgets == NULL)) {
+ BIOerr(BIO_F_BIO_GETS, BIO_R_UNSUPPORTED_METHOD);
+ return -2;
+ }
+
+ if (size < 0) {
+ BIOerr(BIO_F_BIO_GETS, BIO_R_INVALID_ARGUMENT);
+ return 0;
+ }
+
+ if (b->callback != NULL || b->callback_ex != NULL) {
+ ret = (int)bio_call_callback(b, BIO_CB_GETS, buf, size, 0, 0L, 1, NULL);
+ if (ret <= 0)
+ return ret;
+ }
+
+ if (!b->init) {
+ BIOerr(BIO_F_BIO_GETS, BIO_R_UNINITIALIZED);
+ return -2;
+ }
+
+ ret = b->method->bgets(b, buf, size);
+
+ if (ret > 0) {
+ readbytes = ret;
+ ret = 1;
+ }
+
+ if (b->callback != NULL || b->callback_ex != NULL)
+ ret = (int)bio_call_callback(b, BIO_CB_GETS | BIO_CB_RETURN, buf, size,
+ 0, 0L, ret, &readbytes);
+
+ if (ret > 0) {
+ /* Shouldn't happen */
+ if (readbytes > (size_t)size)
+ ret = -1;
+ else
+ ret = (int)readbytes;
+ }
+
+ return ret;
+}
+
+int BIO_indent(BIO *b, int indent, int max)
+{
+ if (indent < 0)
+ indent = 0;
+ if (indent > max)
+ indent = max;
+ while (indent--)
+ if (BIO_puts(b, " ") != 1)
+ return 0;
+ return 1;
+}
+
+long BIO_int_ctrl(BIO *b, int cmd, long larg, int iarg)
+{
+ int i;
+
+ i = iarg;
+ return BIO_ctrl(b, cmd, larg, (char *)&i);
+}
+
+void *BIO_ptr_ctrl(BIO *b, int cmd, long larg)
+{
+ void *p = NULL;
+
+ if (BIO_ctrl(b, cmd, larg, (char *)&p) <= 0)
+ return NULL;
+ else
+ return p;
+}
+
+long BIO_ctrl(BIO *b, int cmd, long larg, void *parg)
+{
+ long ret;
+
+ if (b == NULL)
+ return 0;
+
+ if ((b->method == NULL) || (b->method->ctrl == NULL)) {
+ BIOerr(BIO_F_BIO_CTRL, BIO_R_UNSUPPORTED_METHOD);
+ return -2;
+ }
+
+ if (b->callback != NULL || b->callback_ex != NULL) {
+ ret = bio_call_callback(b, BIO_CB_CTRL, parg, 0, cmd, larg, 1L, NULL);
+ if (ret <= 0)
+ return ret;
+ }
+
+ ret = b->method->ctrl(b, cmd, larg, parg);
+
+ if (b->callback != NULL || b->callback_ex != NULL)
+ ret = bio_call_callback(b, BIO_CB_CTRL | BIO_CB_RETURN, parg, 0, cmd,
+ larg, ret, NULL);
+
+ return ret;
+}
+
+long BIO_callback_ctrl(BIO *b, int cmd, BIO_info_cb *fp)
+{
+ long ret;
+
+ if (b == NULL)
+ return 0;
+
+ if ((b->method == NULL) || (b->method->callback_ctrl == NULL)
+ || (cmd != BIO_CTRL_SET_CALLBACK)) {
+ BIOerr(BIO_F_BIO_CALLBACK_CTRL, BIO_R_UNSUPPORTED_METHOD);
+ return -2;
+ }
+
+ if (b->callback != NULL || b->callback_ex != NULL) {
+ ret = bio_call_callback(b, BIO_CB_CTRL, (void *)&fp, 0, cmd, 0, 1L,
+ NULL);
+ if (ret <= 0)
+ return ret;
+ }
+
+ ret = b->method->callback_ctrl(b, cmd, fp);
+
+ if (b->callback != NULL || b->callback_ex != NULL)
+ ret = bio_call_callback(b, BIO_CB_CTRL | BIO_CB_RETURN, (void *)&fp, 0,
+ cmd, 0, ret, NULL);
+
+ return ret;
+}
+
+/*
+ * It is unfortunate to duplicate in functions what the BIO_(w)pending macros
+ * do; but those macros have inappropriate return type, and for interfacing
+ * from other programming languages, C macros aren't much of a help anyway.
+ */
+size_t BIO_ctrl_pending(BIO *bio)
+{
+ return BIO_ctrl(bio, BIO_CTRL_PENDING, 0, NULL);
+}
+
+size_t BIO_ctrl_wpending(BIO *bio)
+{
+ return BIO_ctrl(bio, BIO_CTRL_WPENDING, 0, NULL);
+}