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gpg: Refactor the printing of binary notations.

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* 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@g10code.com>
This commit is contained in:
Neal H. Walfield 2016-02-29 14:09:43 +01:00
parent 1cdb744d91
commit fd2d00ccf5
1 changed files with 28 additions and 4 deletions
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32
g10/build-packet.c
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@ -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;