From 0aed72b1e5c960989c4ef076b138793a123783eb Mon Sep 17 00:00:00 2001
From: rswindell <>
Date: Fri, 7 Oct 2005 06:23:15 +0000
Subject: [PATCH] New xpdev module: netwrap, for network (but not socket)
related wrappers: currently contains get/freeNameServerList().
---
src/xpdev/netwrap.c | 119 ++++++++++++++++++++++++++++++++++++++++++++
src/xpdev/netwrap.h | 55 ++++++++++++++++++++
2 files changed, 174 insertions(+)
create mode 100644 src/xpdev/netwrap.c
create mode 100644 src/xpdev/netwrap.h
diff --git a/src/xpdev/netwrap.c b/src/xpdev/netwrap.c
new file mode 100644
index 0000000000..703bc3a26c
--- /dev/null
+++ b/src/xpdev/netwrap.c
@@ -0,0 +1,119 @@
+/* netwrap.c */
+
+/* Network related wrapper functions */
+
+/* $Id$ */
+
+/****************************************************************************
+ * @format.tab-size 4 (Plain Text/Source Code File Header) *
+ * @format.use-tabs true (see http://www.synchro.net/ptsc_hdr.html) *
+ * *
+ * Copyright 2005 Rob Swindell - http://www.synchro.net/copyright.html *
+ * *
+ * This library is free software; you can redistribute it and/or *
+ * modify it under the terms of the GNU Lesser General Public License *
+ * as published by the Free Software Foundation; either version 2 *
+ * of the License, or (at your option) any later version. *
+ * See the GNU Lesser General Public License for more details: lgpl.txt or *
+ * http://www.fsf.org/copyleft/lesser.html *
+ * *
+ * Anonymous FTP access to the most recent released source is available at *
+ * ftp://vert.synchro.net, ftp://cvs.synchro.net and ftp://ftp.synchro.net *
+ * *
+ * Anonymous CVS access to the development source and modification history *
+ * is available at cvs.synchro.net:/cvsroot/sbbs, example: *
+ * cvs -d :pserver:anonymous@cvs.synchro.net:/cvsroot/sbbs login *
+ * (just hit return, no password is necessary) *
+ * cvs -d :pserver:anonymous@cvs.synchro.net:/cvsroot/sbbs checkout src *
+ * *
+ * For Synchronet coding style and modification guidelines, see *
+ * http://www.synchro.net/source.html *
+ * *
+ * You are encouraged to submit any modifications (preferably in Unix diff *
+ * format) via e-mail to mods@synchro.net *
+ * *
+ * Note: If this box doesn't appear square, then you need to fix your tabs. *
+ ****************************************************************************/
+
+#include "genwrap.h" /* truncsp */
+#include "netwrap.h" /* verify prototypes */
+
+#include <stdlib.h> /* malloc() */
+
+#if defined(_WIN32)
+ #include <iphlpapi.h> /* GetNetworkParams */
+#endif
+
+str_list_t getNameServerList(void)
+{
+#ifdef __unix__ /* Look up DNS server address */
+ FILE* fp;
+ char* p;
+ char str[128];
+ str_list_t list;
+
+ if((list=strListInit())==NULL)
+ return(NULL);
+ if((fp=fopen("/etc/resolv.conf","r"))!=NULL) {
+ while(!feof(fp)) {
+ if(fgets(str,sizeof(str),fp)==NULL)
+ break;
+ truncsp(str);
+ p=str;
+ SKIP_WHITESPACE(p);
+ if(strnicmp(p,"nameserver",10)!=0) /* no match */
+ continue;
+ FIND_WHITESPACE(p); /* skip "nameserver" */
+ SKIP_WHITESPACE(p); /* skip more white-space */
+ strListPush(&list,p);
+ }
+ fclose(fp);
+ }
+ return(list);
+
+#elif defined(_WIN32)
+ FIXED_INFO* FixedInfo=NULL;
+ ULONG FixedInfoLen=0;
+ IP_ADDR_STRING* ip;
+ str_list_t list;
+
+ if((list=strListInit())==NULL)
+ return(NULL);
+ if(GetNetworkParams(FixedInfo,&FixedInfoLen) == ERROR_BUFFER_OVERFLOW) {
+ FixedInfo=(FIXED_INFO*)malloc(FixedInfoLen);
+ if(GetNetworkParams(FixedInfo,&FixedInfoLen) == ERROR_SUCCESS) {
+ ip=&FixedInfo->DnsServerList;
+ for(; ip!=NULL; ip=ip->Next)
+ strListPush(&list,ip->IpAddress.String);
+ }
+ if(FixedInfo!=NULL)
+ free(FixedInfo);
+ }
+ return(list);
+#else
+ #error "Need a get_nameserver() implementation for this platform"
+#endif
+}
+
+/* In case we want to DLL-export getNameServerList in the future */
+void freeNameServerList(str_list_t list)
+{
+ strListFree(&list);
+}
+
+#if NETWRAP_TEST
+int main(void)
+{
+ size_t i;
+ str_list_t list;
+
+ if((list=getNameServerList())!=NULL) {
+ for(i=0;list[i]!=NULL;i++)
+ printf("%s\n",list[i]);
+ freeNameServerList(list);
+ }
+
+ return 0;
+}
+#endif
+
diff --git a/src/xpdev/netwrap.h b/src/xpdev/netwrap.h
new file mode 100644
index 0000000000..c02717aff7
--- /dev/null
+++ b/src/xpdev/netwrap.h
@@ -0,0 +1,55 @@
+/* netwrap.h */
+
+/* Network related wrapper functions */
+
+/* $Id$ */
+
+/****************************************************************************
+ * @format.tab-size 4 (Plain Text/Source Code File Header) *
+ * @format.use-tabs true (see http://www.synchro.net/ptsc_hdr.html) *
+ * *
+ * Copyright 2005 Rob Swindell - http://www.synchro.net/copyright.html *
+ * *
+ * This library is free software; you can redistribute it and/or *
+ * modify it under the terms of the GNU Lesser General Public License *
+ * as published by the Free Software Foundation; either version 2 *
+ * of the License, or (at your option) any later version. *
+ * See the GNU Lesser General Public License for more details: lgpl.txt or *
+ * http://www.fsf.org/copyleft/lesser.html *
+ * *
+ * Anonymous FTP access to the most recent released source is available at *
+ * ftp://vert.synchro.net, ftp://cvs.synchro.net and ftp://ftp.synchro.net *
+ * *
+ * Anonymous CVS access to the development source and modification history *
+ * is available at cvs.synchro.net:/cvsroot/sbbs, example: *
+ * cvs -d :pserver:anonymous@cvs.synchro.net:/cvsroot/sbbs login *
+ * (just hit return, no password is necessary) *
+ * cvs -d :pserver:anonymous@cvs.synchro.net:/cvsroot/sbbs checkout src *
+ * *
+ * For Synchronet coding style and modification guidelines, see *
+ * http://www.synchro.net/source.html *
+ * *
+ * You are encouraged to submit any modifications (preferably in Unix diff *
+ * format) via e-mail to mods@synchro.net *
+ * *
+ * Note: If this box doesn't appear square, then you need to fix your tabs. *
+ ****************************************************************************/
+
+#ifndef _NETWRAP_H
+#define _NETWRAP_H
+
+#include <stddef.h> /* size_t */
+#include "str_list.h" /* string list functions and types */
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+str_list_t getNameServerList(void);
+void freeNameServerList(str_list_t);
+
+#if defined(__cplusplus)
+}
+#endif
+
+#endif /* Don't add anything after this line */
--
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