Implemented new configuration/reconfiguration interface and defined protocol

state machines. Full explanation will follow soon.

1 files changed, 96 insertions, 0 deletions

diff --git a/conf/conf.c b/conf/conf.c
new file mode 100644
index 00000000..06cd3d19
--- /dev/null
+++ b/conf/conf.c
@@ -0,0 +1,96 @@
+/*
+ *	BIRD Internet Routing Daemon -- Configuration File Handling
+ *
+ *	(c) 1999 Martin Mares <mj@ucw.cz>
+ *
+ *	Can be freely distributed and used under the terms of the GNU GPL.
+ */
+
+#include <setjmp.h>
+#include <stdarg.h>
+
+#include "nest/bird.h"
+#include "nest/protocol.h"
+#include "nest/iface.h"
+#include "lib/resource.h"
+#include "lib/string.h"
+#include "conf/conf.h"
+#include "filter/filter.h"
+
+static jmp_buf conf_jmpbuf;
+
+struct config *config, *new_config;
+
+struct config *
+config_alloc(byte *name)
+{
+  pool *p = rp_new(&root_pool, "Config");
+  linpool *l = lp_new(p, 1024);
+  struct config *c = lp_allocz(l, sizeof(struct config));
+
+  c->pool = p;
+  cfg_mem = c->mem = l;
+  init_list(&c->protos);
+  c->file_name = cfg_strdup(name);
+  return c;
+}
+
+int
+config_parse(struct config *c)
+{
+  struct proto_config *p;
+
+  debug("Parsing configuration file <%s>\n", c->file_name);
+  new_config = c;
+  cfg_pool = c->pool;
+  cfg_mem = c->mem;
+  if (setjmp(conf_jmpbuf))
+    return 0;
+  cf_lex_init(1);
+  cf_lex_init_tables();
+  protos_preconfig(c);
+  cf_parse();
+#if 0					/* FIXME: We don't have interface list yet :( */
+  if (!c->router_id && !(c->router_id = auto_router_id()))
+    cf_error("Cannot determine router ID (no suitable network interface found), please configure it manually");
+#endif
+  filters_postconfig();			/* FIXME: Do we really need this? */
+  protos_postconfig(c);
+  return 1;
+}
+
+void
+config_free(struct config *c)
+{
+  rfree(c->pool);
+}
+
+void
+config_commit(struct config *c)
+{
+  config = c;
+  protos_commit(c);
+}
+
+void
+cf_error(char *msg, ...)
+{
+  char buf[1024];
+  va_list args;
+
+  va_start(args, msg);
+  if (bvsnprintf(buf, sizeof(buf), msg, args) < 0)
+    strcpy(buf, "<bug: error message too long>");
+  new_config->err_msg = cfg_strdup(buf);
+  new_config->err_lino = conf_lino;
+  longjmp(conf_jmpbuf, 1);
+}
+
+char *
+cfg_strdup(char *c)
+{
+  int l = strlen(c) + 1;
+  char *z = cfg_allocu(l);
+  memcpy(z, c, l);
+  return z;
+}