From bb60eb2e6af696443426f45360c697d03167507d Mon Sep 17 00:00:00 2001
From: Tobias Klauser <tklauser@distanz.ch>
Date: Sun, 15 Nov 2015 15:47:43 +0100
Subject: lookup: Make lookup type and function names more generic

It's not only ports we look up, make the names a bit more generic.
Preparatory patch before moving OUI lookup to the lookup module.

Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
---
 lookup.c | 48 +++++++++++++++++++++++++-----------------------
 1 file changed, 25 insertions(+), 23 deletions(-)

(limited to 'lookup.c')

diff --git a/lookup.c b/lookup.c
index 874a9b1..f903fe6 100644
--- a/lookup.c
+++ b/lookup.c
@@ -1,11 +1,13 @@
 /*
  * netsniff-ng - the packet sniffing beast
  * Copyright 2009, 2010 Daniel Borkmann.
- * Copyright 2014 Tobias Klauser
+ * Copyright 2014, 2015 Tobias Klauser
  * Subject to the GPL, version 2.
  */
 
 #include <errno.h>
+#include <stdbool.h>
+#include <stdio.h>
 #include <string.h>
 
 #include "hash.h"
@@ -13,29 +15,29 @@
 #include "lookup.h"
 #include "xmalloc.h"
 
-static struct hash_table lookup_port_tables[PORTS_MAX];
+static struct hash_table lookup_port_tables[LT_MAX];
 static const char * const lookup_port_files[] = {
-	[PORTS_UDP]	= ETCDIRE_STRING "/udp.conf",
-	[PORTS_TCP]	= ETCDIRE_STRING "/tcp.conf",
-	[PORTS_ETHER]	= ETCDIRE_STRING "/ether.conf",
+	[LT_PORTS_UDP]	= ETCDIRE_STRING "/udp.conf",
+	[LT_PORTS_TCP]	= ETCDIRE_STRING "/tcp.conf",
+	[LT_ETHERTYPES]	= ETCDIRE_STRING "/ether.conf",
 };
 
-struct port {
+struct lookup_entry {
 	unsigned int id;
-	char *port;
-	struct port *next;
+	char *str;
+	struct lookup_entry *next;
 };
 
-void lookup_init_ports(enum ports which)
+void lookup_init(enum lookup_type which)
 {
 	FILE *fp;
 	char buff[128], *ptr, *end;
 	const char *file;
 	struct hash_table *table;
-	struct port *p;
+	struct lookup_entry *p;
 	void **pos;
 
-	bug_on(which >= PORTS_MAX);
+	bug_on(which >= LT_MAX);
 	table = &lookup_port_tables[which];
 	file = lookup_port_files[which];
 
@@ -72,7 +74,7 @@ void lookup_init_ports(enum ports which)
 		ptr = strtrim_right(ptr, '\n');
 		ptr = strtrim_right(ptr, ' ');
 
-		p->port = xstrdup(ptr);
+		p->str = xstrdup(ptr);
 		p->next = NULL;
 
 		pos = insert_hash(p->id, p, table);
@@ -89,55 +91,55 @@ void lookup_init_ports(enum ports which)
 
 static int __lookup_cleanup_single(void *ptr)
 {
-	struct port *tmp, *p = ptr;
+	struct lookup_entry *tmp, *p = ptr;
 
 	if (!ptr)
 		return 0;
 
 	while ((tmp = p->next)) {
-		xfree(p->port);
+		xfree(p->str);
 		xfree(p);
 		p = tmp;
 	}
 
-	xfree(p->port);
+	xfree(p->str);
 	xfree(p);
 
 	return 0;
 }
 
-void lookup_cleanup_ports(enum ports which)
+void lookup_cleanup(enum lookup_type which)
 {
 	struct hash_table *table;
 
-	bug_on(which >= PORTS_MAX);
+	bug_on(which >= LT_MAX);
 	table = &lookup_port_tables[which];
 
 	for_each_hash(table, __lookup_cleanup_single);
 	free_hash(table);
 }
 
-#define __do_lookup_inline(id, struct_name, hash_ptr, struct_member)	\
+#define __do_lookup_inline(id, hash_ptr)	\
 	({								\
-		struct struct_name *entry = lookup_hash(id, hash_ptr);	\
+		struct lookup_entry *entry = lookup_hash(id, hash_ptr);	\
 									\
 		while (entry && id != entry->id)			\
 			entry = entry->next;				\
 									\
-		(entry && id == entry->id ? entry->struct_member : NULL); \
+		(entry && id == entry->id ? entry->str : NULL); \
 	})
 
 char *lookup_ether_type(unsigned int id)
 {
-	return __do_lookup_inline(id, port, &lookup_port_tables[PORTS_ETHER], port);
+	return __do_lookup_inline(id, &lookup_port_tables[LT_ETHERTYPES]);
 }
 
 char *lookup_port_udp(unsigned int id)
 {
-	return __do_lookup_inline(id, port, &lookup_port_tables[PORTS_UDP], port);
+	return __do_lookup_inline(id, &lookup_port_tables[LT_PORTS_UDP]);
 }
 
 char *lookup_port_tcp(unsigned int id)
 {
-	return __do_lookup_inline(id, port, &lookup_port_tables[PORTS_TCP], port);
+	return __do_lookup_inline(id, &lookup_port_tables[LT_PORTS_TCP]);
 }
-- 
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