1 files changed, 56 insertions, 0 deletions
diff --git a/utils/debug.c b/utils/debug.c
new file mode 100644
index 00000000..79e437a2
--- /dev/null
+++ b/utils/debug.c
@@ -0,0 +1,56 @@
+/*
+ * Debugging routines used by the debug() macros, at least if you
+ * compiled with -DDEBUG (aka the PUTTY_DEBUG cmake option) so that
+ * those macros don't optimise down to nothing.
+ */
+
+#include "defs.h"
+#include "misc.h"
+#include "utils/utils.h"
+
+void debug_printf(const char *fmt, ...)
+{
+    char *buf;
+    va_list ap;
+
+    va_start(ap, fmt);
+    buf = dupvprintf(fmt, ap);
+    dputs(buf);
+    sfree(buf);
+    va_end(ap);
+}
+
+void debug_memdump(const void *buf, int len, bool L)
+{
+    int i;
+    const unsigned char *p = buf;
+    char foo[17];
+    if (L) {
+        int delta;
+        debug_printf("\t%d (0x%x) bytes:\n", len, len);
+        delta = 15 & (uintptr_t)p;
+        p -= delta;
+        len += delta;
+    }
+    for (; 0 < len; p += 16, len -= 16) {
+        dputs("  ");
+        if (L)
+            debug_printf("%p: ", p);
+        strcpy(foo, "................");        /* sixteen dots */
+        for (i = 0; i < 16 && i < len; ++i) {
+            if (&p[i] < (unsigned char *) buf) {
+                dputs("   ");          /* 3 spaces */
+                foo[i] = ' ';
+            } else {
+                debug_printf("%c%2.2x",
+                             &p[i] != (unsigned char *) buf
+                             && i % 4 ? '.' : ' ', p[i]
+                    );
+                if (p[i] >= ' ' && p[i] <= '~')
+                    foo[i] = (char) p[i];
+            }
+        }
+        foo[i] = '\0';
+        debug_printf("%*s%s\n", (16 - i) * 3 + 2, "", foo);
+    }
+}