Openssl 1.1.0h

crypto/bio/b_dump.c

@@ -0,0 +1,143 @@
+/*
+ * Copyright 1995-2018 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
+ */
+
+/*
+ * Stolen from tjh's ssl/ssl_trc.c stuff.
+ */
+
+#include <stdio.h>
+#include "bio_lcl.h"
+
+#define DUMP_WIDTH      16
+#define DUMP_WIDTH_LESS_INDENT(i) (DUMP_WIDTH-((i-(i>6?6:i)+3)/4))
+
+int BIO_dump_cb(int (*cb) (const void *data, size_t len, void *u),
+                void *u, const char *s, int len)
+{
+    return BIO_dump_indent_cb(cb, u, s, len, 0);
+}
+
+int BIO_dump_indent_cb(int (*cb) (const void *data, size_t len, void *u),
+                       void *u, const char *s, int len, int indent)
+{
+    int ret = 0;
+    char buf[288 + 1], tmp[20], str[128 + 1];
+    int i, j, rows;
+    unsigned char ch;
+    int dump_width;
+
+    if (indent < 0)
+        indent = 0;
+    if (indent) {
+        if (indent > 128)
+            indent = 128;
+        memset(str, ' ', indent);
+    }
+    str[indent] = '\0';
+
+    dump_width = DUMP_WIDTH_LESS_INDENT(indent);
+    rows = (len / dump_width);
+    if ((rows * dump_width) < len)
+        rows++;
+    for (i = 0; i < rows; i++) {
+        OPENSSL_strlcpy(buf, str, sizeof(buf));
+        BIO_snprintf(tmp, sizeof(tmp), "%04x - ", i * dump_width);
+        OPENSSL_strlcat(buf, tmp, sizeof(buf));
+        for (j = 0; j < dump_width; j++) {
+            if (((i * dump_width) + j) >= len) {
+                OPENSSL_strlcat(buf, "   ", sizeof(buf));
+            } else {
+                ch = ((unsigned char)*(s + i * dump_width + j)) & 0xff;
+                BIO_snprintf(tmp, sizeof(tmp), "%02x%c", ch,
+                             j == 7 ? '-' : ' ');
+                OPENSSL_strlcat(buf, tmp, sizeof(buf));
+            }
+        }
+        OPENSSL_strlcat(buf, "  ", sizeof(buf));
+        for (j = 0; j < dump_width; j++) {
+            if (((i * dump_width) + j) >= len)
+                break;
+            ch = ((unsigned char)*(s + i * dump_width + j)) & 0xff;
+#ifndef CHARSET_EBCDIC
+            BIO_snprintf(tmp, sizeof(tmp), "%c",
+                         ((ch >= ' ') && (ch <= '~')) ? ch : '.');
+#else
+            BIO_snprintf(tmp, sizeof(tmp), "%c",
+                         ((ch >= os_toascii[' ']) && (ch <= os_toascii['~']))
+                         ? os_toebcdic[ch]
+                         : '.');
+#endif
+            OPENSSL_strlcat(buf, tmp, sizeof(buf));
+        }
+        OPENSSL_strlcat(buf, "\n", sizeof(buf));
+        /*
+         * if this is the last call then update the ddt_dump thing so that we
+         * will move the selection point in the debug window
+         */
+        ret += cb((void *)buf, strlen(buf), u);
+    }
+    return ret;
+}
+
+#ifndef OPENSSL_NO_STDIO
+static int write_fp(const void *data, size_t len, void *fp)
+{
+    return UP_fwrite(data, len, 1, fp);
+}
+
+int BIO_dump_fp(FILE *fp, const char *s, int len)
+{
+    return BIO_dump_cb(write_fp, fp, s, len);
+}
+
+int BIO_dump_indent_fp(FILE *fp, const char *s, int len, int indent)
+{
+    return BIO_dump_indent_cb(write_fp, fp, s, len, indent);
+}
+#endif
+
+static int write_bio(const void *data, size_t len, void *bp)
+{
+    return BIO_write((BIO *)bp, (const char *)data, len);
+}
+
+int BIO_dump(BIO *bp, const char *s, int len)
+{
+    return BIO_dump_cb(write_bio, bp, s, len);
+}
+
+int BIO_dump_indent(BIO *bp, const char *s, int len, int indent)
+{
+    return BIO_dump_indent_cb(write_bio, bp, s, len, indent);
+}
+
+int BIO_hex_string(BIO *out, int indent, int width, unsigned char *data,
+                   int datalen)
+{
+    int i, j = 0;
+
+    if (datalen < 1)
+        return 1;
+
+    for (i = 0; i < datalen - 1; i++) {
+        if (i && !j)
+            BIO_printf(out, "%*s", indent, "");
+
+        BIO_printf(out, "%02X:", data[i]);
+
+        j = (j + 1) % width;
+        if (!j)
+            BIO_printf(out, "\n");
+    }
+
+    if (i && !j)
+        BIO_printf(out, "%*s", indent, "");
+    BIO_printf(out, "%02X", data[datalen - 1]);
+    return 1;
+}