1 files changed, 114 insertions, 0 deletions
diff --git a/security/nss/lib/ssl/ssltrace.c b/security/nss/lib/ssl/ssltrace.c
new file mode 100644
index 0000000000..b1fdde7902
--- /dev/null
+++ b/security/nss/lib/ssl/ssltrace.c
@@ -0,0 +1,114 @@
+/*
+ * Functions to trace SSL protocol behavior in DEBUG builds.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+#include <stdarg.h>
+#include "cert.h"
+#include "pk11func.h"
+#include "ssl.h"
+#include "sslimpl.h"
+#include "sslproto.h"
+#include "prprf.h"
+
+#if defined(DEBUG) || defined(TRACE)
+static const char *hex = "0123456789abcdef";
+
+static const char printable[257] = {
+    "................"  /* 0x */
+    "................"  /* 1x */
+    " !\"#$%&'()*+,-./" /* 2x */
+    "0123456789:;<=>?"  /* 3x */
+    "@ABCDEFGHIJKLMNO"  /* 4x */
+    "PQRSTUVWXYZ[\\]^_" /* 5x */
+    "`abcdefghijklmno"  /* 6x */
+    "pqrstuvwxyz{|}~."  /* 7x */
+    "................"  /* 8x */
+    "................"  /* 9x */
+    "................"  /* ax */
+    "................"  /* bx */
+    "................"  /* cx */
+    "................"  /* dx */
+    "................"  /* ex */
+    "................"  /* fx */
+};
+
+void
+ssl_PrintBuf(const sslSocket *ss, const char *msg, const void *vp, int len)
+{
+    const unsigned char *cp = (const unsigned char *)vp;
+    char buf[80];
+    char *bp;
+    char *ap;
+
+    if (ss) {
+        SSL_TRACE(("%d: SSL[%d]: %s [Len: %d]", SSL_GETPID(), ss->fd,
+                   msg, len));
+    } else {
+        SSL_TRACE(("%d: SSL: %s [Len: %d]", SSL_GETPID(), msg, len));
+    }
+
+    if (!cp) {
+        SSL_TRACE(("   <NULL>"));
+        return;
+    }
+
+    memset(buf, ' ', sizeof buf);
+    bp = buf;
+    ap = buf + 50;
+    while (--len >= 0) {
+        unsigned char ch = *cp++;
+        *bp++ = hex[(ch >> 4) & 0xf];
+        *bp++ = hex[ch & 0xf];
+        *bp++ = ' ';
+        *ap++ = printable[ch];
+        if (ap - buf >= 66) {
+            *ap = 0;
+            SSL_TRACE(("   %s", buf));
+            memset(buf, ' ', sizeof buf);
+            bp = buf;
+            ap = buf + 50;
+        }
+    }
+    if (bp > buf) {
+        *ap = 0;
+        SSL_TRACE(("   %s", buf));
+    }
+}
+
+void
+ssl_Trace(const char *format, ...)
+{
+    char buf[2000];
+    va_list args;
+
+    if (ssl_trace_iob) {
+        va_start(args, format);
+        PR_vsnprintf(buf, sizeof(buf), format, args);
+        va_end(args);
+
+        fputs(buf, ssl_trace_iob);
+        fputs("\n", ssl_trace_iob);
+    }
+}
+
+void
+ssl_PrintKey(const sslSocket *ss, const char *msg, PK11SymKey *key)
+{
+    SECStatus rv;
+    SECItem *rawkey;
+
+    rv = PK11_ExtractKeyValue(key);
+    if (rv != SECSuccess) {
+        ssl_Trace("Could not extract key for %s", msg);
+        return;
+    }
+    rawkey = PK11_GetKeyData(key);
+    if (!rawkey) {
+        ssl_Trace("Could not extract key for %s", msg);
+        return;
+    }
+    ssl_PrintBuf(ss, msg, rawkey->data, rawkey->len);
+}
+#endif