Import Upstream version 1.0pre7

2019-08-26 13:44:36 +02:00 · 2019-08-26 13:44:36 +02:00 · ed8d36a434
commit ed8d36a434
154 changed files with 53905 additions and 0 deletions
--- a/src/netutl.c
+++ b/src/netutl.c
@ -0,0 +1,246 @@
+/*
+    netutl.c -- some supporting network utility code
+    Copyright (C) 1998-2002 Ivo Timmermans <itimmermans@bigfoot.com>
+                  2000-2002 Guus Sliepen <guus@sliepen.warande.net>
+
+    This program is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 2 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program; if not, write to the Free Software
+    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+
+    $Id: netutl.c,v 1.12.4.34 2002/04/05 09:11:38 guus Exp $
+*/
+
+#include "config.h"
+
+#include <fcntl.h>
+#include <netdb.h>
+#include <netinet/in.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <signal.h>
+#include <sys/socket.h>
+#include <syslog.h>
+#include <arpa/inet.h>
+
+#include <utils.h>
+#include <xalloc.h>
+
+#include "errno.h"
+#include "conf.h"
+#include "net.h"
+#include "netutl.h"
+
+#include "system.h"
+
+int hostnames = 0;
+
+/*
+  Turn a string into a struct addrinfo.
+  Return NULL on failure.
+*/
+struct addrinfo *str2addrinfo(char *address, char *service, int socktype)
+{
+  struct addrinfo hint, *ai;
+  int err;
+cp
+  memset(&hint, 0, sizeof(hint));
+
+  hint.ai_family = addressfamily;
+  hint.ai_socktype = socktype;
+
+  if((err = getaddrinfo(address, service, &hint, &ai)))
+    {
+      if(debug_lvl >= DEBUG_ERROR)
+        syslog(LOG_WARNING, _("Error looking up %s port %s: %s\n"), address, service, gai_strerror(err));
+      cp_trace();
+      return NULL;
+    }
+
+cp
+  return ai;
+}
+
+sockaddr_t str2sockaddr(char *address, char *port)
+{
+  struct addrinfo hint, *ai;
+  sockaddr_t result;
+  int err;
+cp
+  memset(&hint, 0, sizeof(hint));
+
+  hint.ai_family = AF_UNSPEC;
+  hint.ai_flags = AI_NUMERICHOST;
+  hint.ai_socktype = SOCK_STREAM;
+
+  if((err = getaddrinfo(address, port, &hint, &ai) || !ai))
+    {
+      syslog(LOG_ERR, _("Error looking up %s port %s: %s\n"), address, port, gai_strerror(err));
+      cp_trace();
+      raise(SIGFPE);
+      exit(0);
+    }
+
+  result = *(sockaddr_t *)ai->ai_addr;
+  freeaddrinfo(ai);
+cp
+  return result;
+}
+
+void sockaddr2str(sockaddr_t *sa, char **addrstr, char **portstr)
+{
+  char address[NI_MAXHOST];
+  char port[NI_MAXSERV];
+  char *scopeid;
+  int err;
+cp
+  if((err = getnameinfo(&sa->sa, SALEN(sa->sa), address, sizeof(address), port, sizeof(port), NI_NUMERICHOST|NI_NUMERICSERV)))
+    {
+      syslog(LOG_ERR, _("Error while translating addresses: %s"), gai_strerror(err));
+      cp_trace();
+      raise(SIGFPE);
+      exit(0);
+    }
+
+#ifdef HAVE_LINUX
+  if((scopeid = strchr(address, '%')))
+    *scopeid = '\0';  /* Descope. */
+#endif
+
+  *addrstr = xstrdup(address);
+  *portstr = xstrdup(port);
+cp
+}
+
+char *sockaddr2hostname(sockaddr_t *sa)
+{
+  char *str;
+  char address[NI_MAXHOST] = "unknown";
+  char port[NI_MAXSERV] = "unknown";
+  int err;
+cp
+  if((err = getnameinfo(&sa->sa, SALEN(sa->sa), address, sizeof(address), port, sizeof(port), hostnames?0:(NI_NUMERICHOST|NI_NUMERICSERV))))
+    {
+      syslog(LOG_ERR, _("Error while looking up hostname: %s"), gai_strerror(err));
+    }
+
+  asprintf(&str, _("%s port %s"), address, port);
+cp
+  return str;
+}
+
+int sockaddrcmp(sockaddr_t *a, sockaddr_t *b)
+{
+  int result;
+cp
+  result = a->sa.sa_family - b->sa.sa_family;
+  
+  if(result)
+    return result;
+  
+  switch(a->sa.sa_family)
+    {
+      case AF_UNSPEC:
+        return 0;
+      case AF_INET:
+	result = memcmp(&a->in.sin_addr, &b->in.sin_addr, sizeof(a->in.sin_addr));
+	if(result)
+	  return result;
+	return memcmp(&a->in.sin_port, &b->in.sin_port, sizeof(a->in.sin_port));
+      case AF_INET6:
+	result = memcmp(&a->in6.sin6_addr, &b->in6.sin6_addr, sizeof(a->in6.sin6_addr));
+	if(result)
+	  return result;
+	return memcmp(&a->in6.sin6_port, &b->in6.sin6_port, sizeof(a->in6.sin6_port));
+      default:
+        syslog(LOG_ERR, _("sockaddrcmp() was called with unknown address family %d, exitting!"), a->sa.sa_family);
+	cp_trace();
+        raise(SIGFPE);
+        exit(0);
+    }
+cp
+}
+
+void sockaddrunmap(sockaddr_t *sa)
+{
+  if(sa->sa.sa_family == AF_INET6 && IN6_IS_ADDR_V4MAPPED(&sa->in6.sin6_addr))
+    {
+      sa->in.sin_addr.s_addr = ((uint32_t *)&sa->in6.sin6_addr)[3];
+      sa->in.sin_family = AF_INET;
+    }
+}
+
+/* Subnet mask handling */
+
+int maskcmp(char *a, char *b, int masklen, int len)
+{
+  int i, m, result;
+cp
+  for(m = masklen, i = 0; m >= 8; m -= 8, i++)
+    if((result = a[i] - b[i]))
+      return result;
+
+  if(m)
+    return (a[i] & (0x100 - (1 << (8 - m)))) - (b[i] & (0x100 - (1 << (8 - m))));
+
+  return 0;
+}
+
+void mask(char *a, int masklen, int len)
+{
+  int i;
+cp
+  i = masklen / 8;
+  masklen %= 8;
+  
+  if(masklen)
+    a[i++] &= (0x100 - (1 << masklen));
+  
+  for(; i < len; i++)
+    a[i] = 0;
+}
+
+void maskcpy(char *a, char *b, int masklen, int len)
+{
+  int i, m;
+cp
+  for(m = masklen, i = 0; m >= 8; m -= 8, i++)
+    a[i] = b[i];
+
+  if(m)
+    {
+      a[i] = b[i] & (0x100 - (1 << m));
+      i++;
+    }
+
+  for(; i < len; i++)
+    a[i] = 0;
+}
+
+int maskcheck(char *a, int masklen, int len)
+{
+  int i;
+cp
+  i = masklen / 8;
+  masklen %= 8;
+  
+  if(masklen)
+    if(a[i++] & (char)~(0x100 - (1 << masklen)))
+      return -1;
+  
+  for(; i < len; i++)
+    if(a[i] != 0)
+      return -1;
+
+  return 0;
+}