Load cups into easysw/current.

git-svn-id: svn+ssh://src.apple.com/svn/cups/easysw/current@136 a1ca3aef-8c08-0410-bb20-df032aa958be

1 files changed, 275 insertions, 0 deletions

diff --git a/cups/getifaddrs.c b/cups/getifaddrs.c
new file mode 100644
index 000000000..6cb448d61
--- /dev/null
+++ b/cups/getifaddrs.c
@@ -0,0 +1,275 @@
+/*
+ * "$Id: getifaddrs.c 5428 2006-04-18 20:45:30Z mike $"
+ *
+ *   Network interface functions for the Common UNIX Printing System
+ *   (CUPS) scheduler.
+ *
+ *   Copyright 1997-2006 by Easy Software Products, all rights reserved.
+ *
+ *   These coded instructions, statements, and computer programs are the
+ *   property of Easy Software Products and are protected by Federal
+ *   copyright law.  Distribution and use rights are outlined in the file
+ *   "LICENSE" which should have been included with this file.  If this
+ *   file is missing or damaged please contact Easy Software Products
+ *   at:
+ *
+ *       Attn: CUPS Licensing Information
+ *       Easy Software Products
+ *       44141 Airport View Drive, Suite 204
+ *       Hollywood, Maryland 20636 USA
+ *
+ *       Voice: (301) 373-9600
+ *       EMail: cups-info@cups.org
+ *         WWW: http://www.cups.org
+ *
+ * Contents:
+ *
+ *   _cups_getifaddrs()  - Get a list of network interfaces on the system.
+ *   _cups_freeifaddrs() - Free an interface list...
+ */
+
+/*
+ * Include necessary headers.
+ */
+
+#include "http-private.h"
+
+
+#ifndef HAVE_GETIFADDRS
+/*
+ * '_cups_getifaddrs()' - Get a list of network interfaces on the system.
+ */
+
+static int				/* O - 0 on success, -1 on error */
+_cups_getifaddrs(struct ifaddrs **addrs)/* O - List of interfaces */
+{
+  int			sock;		/* Socket */
+  char			buffer[65536],	/* Buffer for address info */
+			*bufptr,	/* Pointer into buffer */
+			*bufend;	/* End of buffer */
+  struct ifconf		conf;		/* Interface configurations */
+  struct sockaddr	addr;		/* Address data */
+  struct ifreq		*ifp;		/* Interface data */
+  int			ifpsize;	/* Size of interface data */
+  struct ifaddrs	*temp;		/* Pointer to current interface */
+  struct ifreq		request;	/* Interface request */
+
+
+ /*
+  * Start with an empty list...
+  */
+
+  if (addrs == NULL)
+    return (-1);
+
+  *addrs = NULL;
+
+ /*
+  * Create a UDP socket to get the interface data...
+  */
+
+  memset (&addr, 0, sizeof(addr));
+  if ((sock = socket(AF_INET, SOCK_DGRAM, 0)) < 0)
+    return (-1);
+
+ /*
+  * Try to get the list of interfaces...
+  */
+
+  conf.ifc_len = sizeof(buffer);
+  conf.ifc_buf = buffer;
+
+  if (ioctl(sock, SIOCGIFCONF, &conf) < 0)
+  {
+   /*
+    * Couldn't get the list of interfaces...
+    */
+
+    close(sock);
+    return (-1);
+  }
+
+ /*
+  * OK, got the list of interfaces, now lets step through the
+  * buffer to pull them out...
+  */
+
+#  ifdef HAVE_STRUCT_SOCKADDR_SA_LEN
+#    define sockaddr_len(a)	((a)->sa_len)
+#  else
+#    define sockaddr_len(a)	(sizeof(struct sockaddr))
+#  endif /* HAVE_STRUCT_SOCKADDR_SA_LEN */
+
+  for (bufptr = buffer, bufend = buffer + conf.ifc_len;
+       bufptr < bufend;
+       bufptr += ifpsize)
+  {
+   /*
+    * Get the current interface information...
+    */
+
+    ifp     = (struct ifreq *)bufptr;
+    ifpsize = sizeof(ifp->ifr_name) + sockaddr_len(&(ifp->ifr_addr));
+
+    if (ifpsize < sizeof(struct ifreq))
+      ifpsize = sizeof(struct ifreq);
+
+    memset(&request, 0, sizeof(request));
+    memcpy(request.ifr_name, ifp->ifr_name, sizeof(ifp->ifr_name));
+
+   /*
+    * Check the status of the interface...
+    */
+
+    if (ioctl(sock, SIOCGIFFLAGS, &request) < 0)
+      continue;
+
+   /*
+    * Allocate memory for a single interface record...
+    */
+
+    if ((temp = calloc(1, sizeof(struct ifaddrs))) == NULL)
+    {
+     /*
+      * Unable to allocate memory...
+      */
+
+      close(sock);
+      return (-1);
+    }
+
+   /*
+    * Add this record to the front of the list and copy the name, flags,
+    * and network address...
+    */
+
+    temp->ifa_next  = *addrs;
+    *addrs          = temp;
+    temp->ifa_name  = strdup(ifp->ifr_name);
+    temp->ifa_flags = request.ifr_flags;
+    if ((temp->ifa_addr = calloc(1, sockaddr_len(&(ifp->ifr_addr)))) != NULL)
+      memcpy(temp->ifa_addr, &(ifp->ifr_addr), sockaddr_len(&(ifp->ifr_addr)));
+
+   /*
+    * Try to get the netmask for the interface...
+    */
+
+    if (!ioctl(sock, SIOCGIFNETMASK, &request))
+    {
+     /*
+      * Got it, make a copy...
+      */
+
+      if ((temp->ifa_netmask = calloc(1, sizeof(request.ifr_netmask))) != NULL)
+	memcpy(temp->ifa_netmask, &(request.ifr_netmask),
+	       sizeof(request.ifr_netmask));
+    }
+
+   /*
+    * Then get the broadcast or point-to-point (destination) address,
+    * if applicable...
+    */
+
+    if (temp->ifa_flags & IFF_BROADCAST)
+    {
+     /*
+      * Have a broadcast address, so get it!
+      */
+
+      if (!ioctl(sock, SIOCGIFBRDADDR, &request))
+      {
+       /*
+	* Got it, make a copy...
+	*/
+
+	if ((temp->ifa_dstaddr = calloc(1, sizeof(request.ifr_broadaddr))) != NULL)
+	  memcpy(temp->ifa_dstaddr, &(request.ifr_broadaddr),
+		 sizeof(request.ifr_broadaddr));
+      }
+    }
+    else if (temp->ifa_flags & IFF_POINTOPOINT)
+    {
+     /*
+      * Point-to-point interface; grab the remote address...
+      */
+
+      if (!ioctl(sock, SIOCGIFDSTADDR, &request))
+      {
+	temp->ifa_dstaddr = malloc(sizeof(request.ifr_dstaddr));
+	memcpy(temp->ifa_dstaddr, &(request.ifr_dstaddr),
+	       sizeof(request.ifr_dstaddr));
+      }
+    }
+  }
+
+ /*
+  * OK, we're done with the socket, close it and return 0...
+  */
+
+  close(sock);
+
+  return (0);
+}
+
+
+/*
+ * '_cups_freeifaddrs()' - Free an interface list...
+ */
+
+static void
+_cups_freeifaddrs(struct ifaddrs *addrs)/* I - Interface list to free */
+{
+  struct ifaddrs	*next;		/* Next interface in list */
+
+
+  while (addrs != NULL)
+  {
+   /*
+    * Make a copy of the next interface pointer...
+    */
+
+    next = addrs->ifa_next;
+
+   /*
+    * Free data values as needed...
+    */
+
+    if (addrs->ifa_name)
+    {
+      free(addrs->ifa_name);
+      addrs->ifa_name = NULL;
+    }
+
+    if (addrs->ifa_addr)
+    {
+      free(addrs->ifa_addr);
+      addrs->ifa_addr = NULL;
+    }
+
+    if (addrs->ifa_netmask)
+    {
+      free(addrs->ifa_netmask);
+      addrs->ifa_netmask = NULL;
+    }
+
+    if (addrs->ifa_dstaddr)
+    {
+      free(addrs->ifa_dstaddr);
+      addrs->ifa_dstaddr = NULL;
+    }
+
+   /*
+    * Free this node and continue to the next...
+    */
+
+    free(addrs);
+
+    addrs = next;
+  }
+}
+#endif /* !HAVE_GETIFADDRS */
+
+
+/*
+ * End of "$Id: getifaddrs.c 5428 2006-04-18 20:45:30Z mike $".
+ */