From 02c1fbddd462fecc6887a44ef67202870bcae7be Mon Sep 17 00:00:00 2001
From: Martin Mares <mj@ucw.cz>
Date: Fri, 3 Dec 1999 11:40:45 +0000
Subject: Added proto_get_named() to be used in CLI commands to get protocol
 instance of a given protocol with optionally given name. See `show static'
 for an example.

---
 nest/proto.c    | 29 +++++++++++++++++++++++++++++
 nest/protocol.h |  1 +
 2 files changed, 30 insertions(+)

diff --git a/nest/proto.c b/nest/proto.c
index 94bbbfd..a0beb5f 100644
--- a/nest/proto.c
+++ b/nest/proto.c
@@ -499,3 +499,32 @@ proto_show(struct symbol *s, int verbose)
     }
   cli_msg(0, "");
 }
+
+struct proto *
+proto_get_named(struct symbol *sym, struct protocol *pr)
+{
+  struct proto *p, *q;
+
+  if (sym)
+    {
+      if (sym->class != SYM_PROTO)
+	cf_error("%s: Not a protocol", sym->name);
+      p = ((struct proto_config *)sym->def)->proto;
+      if (!p || p->proto != pr)
+	cf_error("%s: Not a %s protocol", sym->name, pr->name);
+    }
+  else
+    {
+      p = NULL;
+      WALK_LIST(q, proto_list)
+	if (q->proto == pr)
+	  {
+	    if (p)
+	      cf_error("There are multiple %s protocols running", pr->name);
+	    p = q;
+	  }
+      if (!p)
+	cf_error("There is no %s protocol running", pr->name);
+    }
+  return p;
+}
diff --git a/nest/protocol.h b/nest/protocol.h
index 0962ccf..3e53c86 100644
--- a/nest/protocol.h
+++ b/nest/protocol.h
@@ -151,6 +151,7 @@ void proto_build(struct proto_config *);
 void *proto_new(struct proto_config *, unsigned size);
 void *proto_config_new(struct protocol *, unsigned size);
 void proto_show(struct symbol *, int);
+struct proto *proto_get_named(struct symbol *, struct protocol *);
 
 extern list proto_list;
 
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