Openssl 1.1.0h

crypto/asn1/a_i2d_fp.c

@@ -0,0 +1,111 @@
+/*
+ * Copyright 1995-2016 The OpenSSL Project Authors. All Rights Reserved.
+ *
+ * Licensed under the OpenSSL license (the "License").  You may not use
+ * this file except in compliance with the License.  You can obtain a copy
+ * in the file LICENSE in the source distribution or at
+ * https://www.openssl.org/source/license.html
+ */
+
+#include <stdio.h>
+#include "internal/cryptlib.h"
+#include <openssl/buffer.h>
+#include <openssl/asn1.h>
+
+#ifndef NO_OLD_ASN1
+
+# ifndef OPENSSL_NO_STDIO
+int ASN1_i2d_fp(i2d_of_void *i2d, FILE *out, void *x)
+{
+    BIO *b;
+    int ret;
+
+    if ((b = BIO_new(BIO_s_file())) == NULL) {
+        ASN1err(ASN1_F_ASN1_I2D_FP, ERR_R_BUF_LIB);
+        return (0);
+    }
+    BIO_set_fp(b, out, BIO_NOCLOSE);
+    ret = ASN1_i2d_bio(i2d, b, x);
+    BIO_free(b);
+    return (ret);
+}
+# endif
+
+int ASN1_i2d_bio(i2d_of_void *i2d, BIO *out, unsigned char *x)
+{
+    char *b;
+    unsigned char *p;
+    int i, j = 0, n, ret = 1;
+
+    n = i2d(x, NULL);
+    if (n <= 0)
+        return 0;
+
+    b = OPENSSL_malloc(n);
+    if (b == NULL) {
+        ASN1err(ASN1_F_ASN1_I2D_BIO, ERR_R_MALLOC_FAILURE);
+        return (0);
+    }
+
+    p = (unsigned char *)b;
+    i2d(x, &p);
+
+    for (;;) {
+        i = BIO_write(out, &(b[j]), n);
+        if (i == n)
+            break;
+        if (i <= 0) {
+            ret = 0;
+            break;
+        }
+        j += i;
+        n -= i;
+    }
+    OPENSSL_free(b);
+    return (ret);
+}
+
+#endif
+
+#ifndef OPENSSL_NO_STDIO
+int ASN1_item_i2d_fp(const ASN1_ITEM *it, FILE *out, void *x)
+{
+    BIO *b;
+    int ret;
+
+    if ((b = BIO_new(BIO_s_file())) == NULL) {
+        ASN1err(ASN1_F_ASN1_ITEM_I2D_FP, ERR_R_BUF_LIB);
+        return (0);
+    }
+    BIO_set_fp(b, out, BIO_NOCLOSE);
+    ret = ASN1_item_i2d_bio(it, b, x);
+    BIO_free(b);
+    return (ret);
+}
+#endif
+
+int ASN1_item_i2d_bio(const ASN1_ITEM *it, BIO *out, void *x)
+{
+    unsigned char *b = NULL;
+    int i, j = 0, n, ret = 1;
+
+    n = ASN1_item_i2d(x, &b, it);
+    if (b == NULL) {
+        ASN1err(ASN1_F_ASN1_ITEM_I2D_BIO, ERR_R_MALLOC_FAILURE);
+        return (0);
+    }
+
+    for (;;) {
+        i = BIO_write(out, &(b[j]), n);
+        if (i == n)
+            break;
+        if (i <= 0) {
+            ret = 0;
+            break;
+        }
+        j += i;
+        n -= i;
+    }
+    OPENSSL_free(b);
+    return (ret);
+}