[Pkg-gnupg-commit] [gnupg2] 79/205: gpg: Refactor the printing of binary notations.

Daniel Kahn Gillmor dkg at fifthhorseman.net
Wed May 11 08:38:19 UTC 2016


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dkg pushed a commit to branch experimental
in repository gnupg2.

commit fd2d00ccf558b1ac1184967d8702ef01cd60bf60
Author: Neal H. Walfield <neal at g10code.com>
Date:   Mon Feb 29 14:09:43 2016 +0100

    gpg: Refactor the printing of binary notations.
    
    * g10/build-packet.c (sig_to_notation): Break printing of binary
    notations into...
    (notation_value_to_human_readable_string): ... this new function.
    Provide a small preview of the binary data substituting non-printable
    characters with '?'.
    
    --
    Signed-off-by: Neal H. Walfield <neal at g10code.com>
---
 g10/build-packet.c | 32 ++++++++++++++++++++++++++++----
 1 file changed, 28 insertions(+), 4 deletions(-)

diff --git a/g10/build-packet.c b/g10/build-packet.c
index feb7b44..8388ce3 100644
--- a/g10/build-packet.c
+++ b/g10/build-packet.c
@@ -1062,6 +1062,33 @@ build_attribute_subpkt(PKT_user_id *uid,byte type,
   uid->attrib_len+=idx+headerlen+buflen;
 }
 
+/* Returns a human-readable string corresponding to the notation.
+   This ignores notation->value.  The caller must free the result.  */
+static char *
+notation_value_to_human_readable_string (struct notation *notation)
+{
+  if(notation->bdat)
+    /* Binary data.  */
+    {
+      size_t len = notation->blen;
+      int i;
+      char preview[20];
+
+      for (i = 0; i < len && i < sizeof (preview) - 1; i ++)
+        if (isprint (notation->bdat[i]))
+          preview[i] = notation->bdat[i];
+        else
+          preview[i] = '?';
+      preview[i] = 0;
+
+      return xasprintf (_("[ not human readable (%zd bytes: %s%s) ]"),
+                        len, preview, i < len ? "..." : "");
+    }
+  else
+    /* The value is human-readable.  */
+    return xstrdup (notation->value);
+}
+
 /* Turn the notation described by the string STRING into a notation.
 
    STRING has the form:
@@ -1222,10 +1249,7 @@ sig_to_notation(PKT_signature *sig)
 	  n->blen=n2;
 	  memcpy(n->bdat,&p[8+n1],n2);
 
-	  n->value=xmalloc(2+strlen(_("not human readable"))+2+1);
-	  strcpy(n->value,"[ ");
-	  strcat(n->value,_("not human readable"));
-	  strcat(n->value," ]");
+          n->value = notation_value_to_human_readable_string (n);
 	}
 
       n->flags.critical=crit;

-- 
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