Merge remote-tracking branch 'origin/topic/bif_cleanup'

* origin/topic/bif_cleanup:
  Give mode2string a more generic name.
  Change some BiF return values from bool to any.
  Perform type checking on count-to-port conversion.
  Remove redundant connection_record() BiF.
  Remove redundant active_connection() BiF.
  Make exit() parameterizable.
  to_port() now parses a string instead of a count.

Closes #684.

CHANGES

@@ -1,4 +1,25 @@
 
+2.0-20 | 2012-01-25 16:34:51 -0800
+
+  * BiF cleanup (Matthias Vallentin)
+
+      - Rename NFS3::mode2string to a more generic file_mode().
+
+      - Unify do_profiling()/make_connection_persistent()/expect_connection()
+        to return any (i.e., nothing) instead of bools.
+
+      - Perform type checking on count-to-port conversion. Related to #684.
+
+      - Remove redundant connection_record() BiF. The same
+        functionality is provided by lookup_connection().
+
+      - Remove redundant active_connection() BiF. The same
+        functionality is provided by connection_exists().
+
+      - exit() now takes the exit code as argument.
+
+      - to_port() now received a string instead of a count.
+        
 2.0-9 | 2012-01-25 13:47:13 -0800
 
   * Allow local table variables to be initialized with {} list

VERSION

@@ -1 +1 @@
-2.0-9
+2.0-20

scripts/base/protocols/irc/dcc-send.bro

@@ -103,7 +103,7 @@ event irc_dcc_message(c: connection, is_orig: bool,
             return;
 	c$irc$dcc_file_name = argument;
 	c$irc$dcc_file_size = size;
-	local p = to_port(dest_port, tcp);
+	local p = count_to_port(dest_port, tcp);
 	expect_connection(to_addr("0.0.0.0"), address, p, ANALYZER_FILE, 5 min);
 	dcc_expected_transfers[address, p] = c$irc;
 	}

src/bro.bif

@@ -392,10 +392,12 @@ function setenv%(var: string, val: string%): bool
 
 ## Shuts down the Bro process immediately.
 ##
-## .. todo: Change function signature to ``exit(code: int): any``.
-function exit%(%): int
+## code: The exit code to return with.
+##
+## .. bro:see:: terminate
+function exit%(code: int%): any
 	%{
-	exit(0);
+	exit(code);
 	return 0;
 	%}
 
@@ -404,7 +406,7 @@ function exit%(%): int
 ## Returns: True after successful termination and false when Bro is still in
 ##          the process of shutting down.
 ##
-## .. bro:see:: bro_is_terminating
+## .. bro:see:: exit bro_is_terminating
 function terminate%(%): bool
 	%{
 	if ( terminating )
@@ -1942,12 +1944,12 @@ function record_fields%(rec: any%): record_field_table
 ##              get_matcher_stats
 ##              dump_rule_stats
 ##              get_gap_summary
-function do_profiling%(%) : bool
+function do_profiling%(%) : any
 	%{
 	if ( profiling_logger )
 		profiling_logger->Log();
 
-	return new Val(1, TYPE_BOOL);
+	return 0;
 	%}
 
 ## Checks whether a given IP address belongs to a local interface.
@@ -2215,14 +2217,16 @@ function port_to_count%(p: port%): count
 
 ## Converts a :bro:type:`count` and ``transport_proto`` to a :bro:type:`port`.
 ##
-## c: The :bro:type:`count` to convert.
+## num: The :bro:type:`port` number.
+##
+## proto: The transport protocol.
 ##
 ## Returns: The :bro:type:`count` *c* as :bro:type:`port`.
 ##
 ## .. bro:see:: port_to_count
-function count_to_port%(c: count, t: transport_proto%): port
+function count_to_port%(num: count, proto: transport_proto%): port
 	%{
-	return new PortVal(c, (TransportProto)(t->InternalInt()));
+	return new PortVal(num, (TransportProto)proto->AsEnum());
 	%}
 
 ## Converts a :bro:type:`string` to an :bro:type:`addr`.
@@ -2283,19 +2287,34 @@ function raw_bytes_to_v4_addr%(b: string%): addr
 	return new AddrVal(htonl(a));
 	%}
 
-## Creates a :bro:type:`port` from a given number and transport protocol.
+## Converts a :bro:type:`string` to an :bro:type:`port`.
 ##
-## num: The port number.
+## s: The :bro:type:`string` to convert.
 ##
-## proto: THe transport protocol of the port.
-##
-## Returns: A :bro:type:`port` with number *num* and transport protocol
-##          *proto*.
+## Returns: A :bro:type:`port` converted from *s*.
 ##
 ## .. bro:see:: to_addr to_count to_int
-function to_port%(num: count, proto: transport_proto%): port
+function to_port%(s: string%): port
     %{
-	return new PortVal(num, (TransportProto)proto->AsEnum());
+    int port = 0;
+    if ( s->Len() < 10 )
+        {
+        char* slash;
+        port = strtol(s->CheckString(), &slash, 10);
+        if ( port )
+            {
+            ++slash;
+            if ( streq(slash, "tcp") )
+                return new PortVal(port, TRANSPORT_TCP);
+            else if ( streq(slash, "udp") )
+                return new PortVal(port, TRANSPORT_UDP);
+            else if ( streq(slash, "icmp") )
+                return new PortVal(port, TRANSPORT_ICMP);
+            }
+        }
+
+    builtin_error("wrong port format, must be /[0-9]{1,5}\\/(tcp|udp|icmp)/");
+    return new PortVal(port, TRANSPORT_UNKNOWN);
 	%}
 
 ## Converts a reverse pointer name to an address. For example,
@@ -3741,7 +3760,7 @@ function x509_err2str%(err_num: count%): string
 ##
 ## Returns: A string representation of *mode* in the format
 ##          ``rw[xsS]rw[xsS]rw[xtT]``.
-function NFS3::mode2string%(mode: count%): string
+function file_mode%(mode: count%): string
 	%{
 	char str[12];
 	char *p = str;
@@ -3857,11 +3876,11 @@ function NFS3::mode2string%(mode: count%): string
 ##
 ## .. todo:: The return value should be changed to any.
 function expect_connection%(orig: addr, resp: addr, resp_p: port,
-				analyzer: count, tout: interval%) : bool
+				analyzer: count, tout: interval%) : any
 	%{
 	dpm->ExpectConnection(orig, resp, resp_p->Port(), resp_p->PortType(),
 				(AnalyzerTag::Tag) analyzer, tout, 0);
-	return new Val(1, TYPE_BOOL);
+	return 0;
 	%}
 
 ## Disables the analyzer which raised the current event (if the analyzer
@@ -5379,28 +5398,6 @@ function anonymize_addr%(a: addr, cl: IPAddrAnonymizationClass%): addr
 #endif
 	%}
 
-## Deprecated. Will be removed.
-function active_connection%(id: conn_id%): bool
-	%{
-	Connection* c = sessions->FindConnection(id);
-	return new Val(c ? 1 : 0, TYPE_BOOL);
-	%}
-
-## Deprecated. Will be removed.
-function connection_record%(cid: conn_id%): connection
-	%{
-	Connection* c = sessions->FindConnection(cid);
-	if ( c )
-		return c->BuildConnVal();
-	else
-		{
-		// Hard to recover from this until we have union types ...
-		builtin_error("connection ID not a known connection (fatal)", cid);
-		exit(0);
-		return 0;
-		}
-	%}
-
 ## Deprecated. Will be removed.
 function dump_config%(%) : bool
 	%{
@@ -5408,10 +5405,10 @@ function dump_config%(%) : bool
 	%}
 
 ## Deprecated. Will be removed.
-function make_connection_persistent%(c: connection%) : bool
+function make_connection_persistent%(c: connection%) : any
 	%{
 	c->MakePersistent();
-	return new Val(1, TYPE_BOOL);
+	return 0;
 	%}
 
 %%{

src/event.bif

@@ -2574,7 +2574,7 @@ event nfs_proc_null%(c: connection, info: NFS3::info_t%);
 ## .. bro:see:: nfs_proc_create  nfs_proc_lookup nfs_proc_mkdir
 ##    nfs_proc_not_implemented nfs_proc_null nfs_proc_read nfs_proc_readdir
 ##    nfs_proc_readlink nfs_proc_remove nfs_proc_rmdir nfs_proc_write nfs_reply_status
-##    rpc_call rpc_dialogue rpc_reply NFS3::mode2string
+##    rpc_call rpc_dialogue rpc_reply file_mode
 ##
 ## .. todo:: Bro's current default configuration does not activate the protocol
 ##    analyzer that generates this event; the corresponding script has not yet