Added state-handle and some support for asynchronous activities.

[yaz-moved-to-github.git] / odr / ber_tag.c

diff --git a/odr/ber_tag.c b/odr/ber_tag.c
index f6c3576..a0e39bb 100644 (file)
--- a/odr/ber_tag.c
+++ b/odr/ber_tag.c
@@ -4,7 +4,22 @@
  * Sebastian Hammer, Adam Dickmeiss
  *
  * $Log: ber_tag.c,v $
- * Revision 1.4  1995-02-10 15:55:28  quinn
+ * Revision 1.9  1995-03-15 08:37:18  quinn
+ * Fixed protocol bugs.
+ *
+ * Revision 1.8  1995/03/10  11:44:40  quinn
+ * Fixed serious stack-bug in odr_cons_begin
+ *
+ * Revision 1.7  1995/03/08  12:12:13  quinn
+ * Added better error checking.
+ *
+ * Revision 1.6  1995/02/14  11:54:33  quinn
+ * Adjustments.
+ *
+ * Revision 1.5  1995/02/10  18:57:24  quinn
+ * More in the way of error-checking.
+ *
+ * Revision 1.4  1995/02/10  15:55:28  quinn
  * Bug fixes, mostly.
  *
  * Revision 1.3  1995/02/09  15:51:46  quinn
@@ -28,41 +43,65 @@
  * On decoding:
  *      if tag && class match up, advance pointer and return 1. set cons.
  *      else leave pointer unchanged. Return 0.
+ *
+ * Should perhaps be odr_tag?
 */
-int ber_tag(ODR o, const void *p, int class, int tag, int *constructed)
+int ber_tag(ODR o, void *p, int class, int tag, int *constructed, int opt)
 {
     static int lclass = -1, ltag, br, lcons; /* save t&c rather than
                                                decoding twice */
     int rd;
+    char **pp = p;
 
+    if (o->direction == ODR_DECODE)
+       *pp = 0;
     o->t_class = -1;
-    if (o->buf == o->bp)   /* This is insurance. It shouldn't be necessary */
+    if (o->stackp < 0)
+    {
+       o->bp = o->buf;
        lclass = -1;
+       if (o->direction == ODR_ENCODE)
+           o->left = o->buflen;
+    }
     switch (o->direction)
     {
        case ODR_ENCODE:
-           if (!p)
+           if (!*pp)
+           {
+               if (!opt)
+                   o->error = OREQUIRED;
                return 0;
+           }
            if ((rd = ber_enctag(o->bp, class, tag, *constructed, o->left))
                <=0)
+           {
+               o->error = OSPACE;
                return -1;
+           }
            o->bp += rd;
            o->left -= rd;
 #ifdef ODR_DEBUG
-           fprintf(stderr, "\n[class=%d,tag=%d,cons=%d]", class, tag,
-               *constructed);
+           fprintf(stderr, "\n[class=%d,tag=%d,cons=%d,stackp=%d,left=%d]", class, tag,
+               *constructed, o->stackp, o->left);
 #endif
            return 1;
        case ODR_DECODE:
            if (o->stackp > -1 && !odr_constructed_more(o))
+           {
+               if (!opt)
+                   o->error = OREQUIRED;
                return 0;
+           }
            if (lclass < 0)
            {
                if ((br = ber_dectag(o->bp, &lclass, &ltag, &lcons)) <= 0)
-                   return -1;
+               {
+                   o->error = OPROTO;
+                   return 0;
+               }
 #ifdef ODR_DEBUG
-               fprintf(stderr, "\n[class=%d,tag=%d,cons=%d]", lclass, ltag,
-                   lcons);
+               fprintf(stderr, "\n[class=%d,tag=%d,cons=%d,stackp=%d]", lclass, ltag,
+                   lcons, o->stackp);
 #endif
            }
            if (class == lclass && tag == ltag)
@@ -74,9 +113,16 @@ int ber_tag(ODR o, const void *p, int class, int tag, int *constructed)
                return 1;
            }
            else
+           {
+               if (!opt)
+                   o->error = OREQUIRED;
                return 0;
-       case ODR_PRINT: return p != 0;
-       default: return 0;
+           }
+       case ODR_PRINT:
+               if (!*pp && !opt)
+                   o->error = OREQUIRED;
+               return *pp != 0;
+       default: o->error = OOTHER; return 0;
     }
 }