+/*
+ * Copyright (c) 1995-2003, Index Data
+ * See the file LICENSE for details.
+ *
+ * $Id: odr_cons.c,v 1.1 2003-10-27 12:21:33 adam Exp $
+ *
+ */
+#if HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include "odr-priv.h"
+
+void odr_setlenlen(ODR o, int len)
+{
+ o->lenlen = len;
+}
+
+int odr_constructed_begin(ODR o, void *p, int zclass, int tag,
+ const char *name)
+{
+ int res;
+ int cons = 1;
+ int lenlen = o->lenlen;
+
+ if (o->error)
+ return 0;
+ o->lenlen = 1; /* reset lenlen */
+ if (o->t_class < 0)
+ {
+ o->t_class = zclass;
+ o->t_tag = tag;
+ }
+ if ((res = ber_tag(o, p, o->t_class, o->t_tag, &cons, 1, name)) < 0)
+ return 0;
+ if (!res || !cons)
+ return 0;
+
+ if (o->op->stackp == ODR_MAX_STACK - 1)
+ {
+ odr_seterror(o, OSTACK, 30);
+ return 0;
+ }
+ o->op->stack[++(o->op->stackp)].lenb = o->bp;
+ o->op->stack[o->op->stackp].len_offset = odr_tell(o);
+#ifdef ODR_DEBUG
+ fprintf(stderr, "[cons_begin(%d)]", o->op->stackp);
+#endif
+ if (o->direction == ODR_ENCODE)
+ {
+ static unsigned char dummy[sizeof(int)+1];
+
+ o->op->stack[o->op->stackp].lenlen = lenlen;
+
+ if (odr_write(o, dummy, lenlen) < 0) /* dummy */
+ {
+ --(o->op->stackp);
+ return 0;
+ }
+ }
+ else if (o->direction == ODR_DECODE)
+ {
+ if ((res = ber_declen(o->bp, &o->op->stack[o->op->stackp].len,
+ odr_max(o))) < 0)
+ {
+ odr_seterror(o, OOTHER, 31);
+ --(o->op->stackp);
+ return 0;
+ }
+ o->op->stack[o->op->stackp].lenlen = res;
+ o->bp += res;
+ if (o->op->stack[o->op->stackp].len > odr_max(o))
+ {
+ odr_seterror(o, OOTHER, 32);
+ --(o->op->stackp);
+ return 0;
+ }
+ }
+ else if (o->direction == ODR_PRINT)
+ {
+ odr_prname(o, name);
+ fprintf(o->print, "{\n");
+ o->indent++;
+ }
+ else
+ {
+ odr_seterror(o, OOTHER, 33);
+ --(o->op->stackp);
+ return 0;
+ }
+ o->op->stack[o->op->stackp].base = o->bp;
+ o->op->stack[o->op->stackp].base_offset = odr_tell(o);
+ return 1;
+}
+
+int odr_constructed_more(ODR o)
+{
+ if (o->error)
+ return 0;
+ if (o->op->stackp < 0)
+ return 0;
+ if (o->op->stack[o->op->stackp].len >= 0)
+ return o->bp - o->op->stack[o->op->stackp].base < o->op->stack[o->op->stackp].len;
+ else
+ return (!(*o->bp == 0 && *(o->bp + 1) == 0));
+}
+
+int odr_constructed_end(ODR o)
+{
+ int res;
+ int pos;
+
+ if (o->error)
+ return 0;
+ if (o->op->stackp < 0)
+ {
+ odr_seterror(o, OOTHER, 34);
+ return 0;
+ }
+ switch (o->direction)
+ {
+ case ODR_DECODE:
+ if (o->op->stack[o->op->stackp].len < 0)
+ {
+ if (*o->bp++ == 0 && *(o->bp++) == 0)
+ {
+ o->op->stackp--;
+ return 1;
+ }
+ else
+ {
+ odr_seterror(o, OOTHER, 35);
+ return 0;
+ }
+ }
+ else if (o->bp - o->op->stack[o->op->stackp].base !=
+ o->op->stack[o->op->stackp].len)
+ {
+ odr_seterror(o, OCONLEN, 36);
+ return 0;
+ }
+ o->op->stackp--;
+ return 1;
+ case ODR_ENCODE:
+ pos = odr_tell(o);
+ odr_seek(o, ODR_S_SET, o->op->stack[o->op->stackp].len_offset);
+ if ((res = ber_enclen(o, pos - o->op->stack[o->op->stackp].base_offset,
+ o->op->stack[o->op->stackp].lenlen, 1)) < 0)
+ {
+ odr_seterror(o, OLENOV, 37);
+ return 0;
+ }
+ odr_seek(o, ODR_S_END, 0);
+ if (res == 0) /* indefinite encoding */
+ {
+#ifdef ODR_DEBUG
+ fprintf(stderr, "[cons_end(%d): indefinite]", o->op->stackp);
+#endif
+ if (odr_putc(o, 0) < 0 || odr_putc(o, 0) < 0)
+ return 0;
+ }
+#ifdef ODR_DEBUG
+ else
+ {
+ fprintf(stderr, "[cons_end(%d): definite]", o->op->stackp);
+ }
+#endif
+ o->op->stackp--;
+ return 1;
+ case ODR_PRINT:
+ o->op->stackp--;
+ o->indent--;
+ odr_prname(o, 0);
+ fprintf(o->print, "}\n");
+ return 1;
+ default:
+ odr_seterror(o, OOTHER, 38);
+ return 0;
+ }
+}