/* a_strex.c */
-/* Written by Dr Stephen N Henson (shenson@bigfoot.com) for the OpenSSL
+/* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
* project 2000.
*/
/* ====================================================================
#define CHARTYPE_BS_ESC (ASN1_STRFLGS_ESC_2253 | CHARTYPE_FIRST_ESC_2253 | CHARTYPE_LAST_ESC_2253)
+#define ESC_FLAGS (ASN1_STRFLGS_ESC_2253 | \
+ ASN1_STRFLGS_ESC_QUOTE | \
+ ASN1_STRFLGS_ESC_CTRL | \
+ ASN1_STRFLGS_ESC_MSB)
+
/* Three IO functions for sending data to memory, a BIO and
* and a FILE pointer.
if(!io_ch(arg, tmphex, 3)) return -1;
return 3;
}
+ /* If we get this far and do any escaping at all must escape
+ * the escape character itself: backslash.
+ */
+ if (chtmp == '\\' && flags & ESC_FLAGS) {
+ if(!io_ch(arg, "\\\\", 2)) return -1;
+ return 2;
+ }
if(!io_ch(arg, &chtmp, 1)) return -1;
return 1;
}
q = buf + buflen;
outlen = 0;
while(p != q) {
- if(p == buf) orflags = CHARTYPE_FIRST_ESC_2253;
+ if(p == buf && flags & ASN1_STRFLGS_ESC_2253) orflags = CHARTYPE_FIRST_ESC_2253;
else orflags = 0;
switch(type & BUF_TYPE_WIDTH_MASK) {
case 4:
if(i < 0) return -1; /* Invalid UTF8String */
p += i;
break;
+ default:
+ return -1; /* invalid width */
}
- if (p == q) orflags = CHARTYPE_LAST_ESC_2253;
+ if (p == q && flags & ASN1_STRFLGS_ESC_2253) orflags = CHARTYPE_LAST_ESC_2253;
if(type & BUF_TYPE_CONVUTF8) {
unsigned char utfbuf[6];
int utflen;
4, -1, 2 /* 28-30 */
};
-#define ESC_FLAGS (ASN1_STRFLGS_ESC_2253 | \
- ASN1_STRFLGS_ESC_QUOTE | \
- ASN1_STRFLGS_ESC_CTRL | \
- ASN1_STRFLGS_ESC_MSB)
-
/* This is the main function, print out an
* ASN1_STRING taking note of various escape
* and display options. Returns number of
}
len = do_buf(str->data, str->length, type, flags, "es, io_ch, NULL);
- if(outlen < 0) return -1;
+ if(len < 0) return -1;
outlen += len;
if(quotes) outlen += 2;
if(!arg) return outlen;
if(quotes && !io_ch(arg, "\"", 1)) return -1;
- do_buf(str->data, str->length, type, flags, NULL, io_ch, arg);
+ if(do_buf(str->data, str->length, type, flags, NULL, io_ch, arg) < 0)
+ return -1;
if(quotes && !io_ch(arg, "\"", 1)) return -1;
return outlen;
}