Load cups into easysw/current.

git-svn-id: svn+ssh://src.apple.com/svn/cups/easysw/current@2 a1ca3aef-8c08-0410-bb20-df032aa958be

1 files changed, 576 insertions, 0 deletions

diff --git a/scheduler/network.c b/scheduler/network.c
new file mode 100644
index 000000000..0065dc09c
--- /dev/null
+++ b/scheduler/network.c
@@ -0,0 +1,576 @@
+/*
+ * "$Id: network.c 4779 2005-10-12 19:44:42Z mike $"
+ *
+ *   Network interface functions for the Common UNIX Printing System
+ *   (CUPS) scheduler.
+ *
+ *   Copyright 1997-2005 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:
+ *
+ *   cupsdNetIFFind()   - Find a network interface.
+ *   cupsdNetIFFree()   - Free the current network interface list.
+ *   cupsdNetIFUpdate() - Update the network interface list as needed...
+ *   getifaddrs()       - Get a list of network interfaces on the system.
+ *   freeifaddrs()      - Free an interface list...
+ */
+
+/*
+ * Include necessary headers.
+ */
+
+#include "cupsd.h"
+
+#include <net/if.h>
+
+#ifdef HAVE_GETIFADDRS
+/*
+ * Use native getifaddrs() function...
+ */
+#  include <ifaddrs.h>
+#else
+/*
+ * Use getifaddrs() emulation...
+ */
+
+#  include <sys/ioctl.h>
+#  ifdef HAVE_SYS_SOCKIO_H
+#    include <sys/sockio.h>
+#  endif
+
+#  ifdef ifa_dstaddr
+#    undef ifa_dstaddr
+#  endif /* ifa_dstaddr */
+#  ifndef ifr_netmask
+#    define ifr_netmask ifr_addr
+#  endif /* !ifr_netmask */
+
+struct ifaddrs				/**** Interface Structure ****/
+{
+  struct ifaddrs	*ifa_next;	/* Next interface in list */
+  char			*ifa_name;	/* Name of interface */
+  unsigned int		ifa_flags;	/* Flags (up, point-to-point, etc.) */
+  struct sockaddr	*ifa_addr,	/* Network address */
+			*ifa_netmask,	/* Address mask */
+			*ifa_dstaddr;	/* Broadcast or destination address */
+  void			*ifa_data;	/* Interface statistics */
+};
+
+int	getifaddrs(struct ifaddrs **addrs);
+void	freeifaddrs(struct ifaddrs *addrs);
+#endif /* HAVE_GETIFADDRS */
+
+
+/*
+ * 'cupsdNetIFFind()' - Find a network interface.
+ */
+
+cupsd_netif_t *				/* O - Network interface data */
+cupsdNetIFFind(const char *name)	/* I - Name of interface */
+{
+  cupsd_netif_t	*temp;			/* Current network interface */
+
+
+ /*
+  * Update the interface list as needed...
+  */
+
+  cupsdNetIFUpdate();
+
+ /*
+  * Search for the named interface...
+  */
+
+  for (temp = NetIFList; temp != NULL; temp = temp->next)
+    if (!strcasecmp(name, temp->name))
+      return (temp);
+
+  return (NULL);
+}
+
+
+/*
+ * 'cupsdNetIFFree()' - Free the current network interface list.
+ */
+
+void
+cupsdNetIFFree(void)
+{
+  cupsd_netif_t	*next;			/* Next interface in list */
+
+
+ /*
+  * Loop through the interface list and free all the records...
+  */
+
+  while (NetIFList != NULL)
+  {
+    next = NetIFList->next;
+
+    free(NetIFList);
+
+    NetIFList = next;
+  }
+}
+
+
+/*
+ * 'cupsdNetIFUpdate()' - Update the network interface list as needed...
+ */
+
+void
+cupsdNetIFUpdate(void)
+{
+  int			i,		/* Looping var */
+			match;		/* Matching address? */
+  cupsd_listener_t	*lis;		/* Listen address */
+  cupsd_netif_t		*temp,		/* New interface */
+			*prev,		/* Previous interface */
+			*current;	/* Current interface */
+  struct ifaddrs	*addrs,		/* Interface address list */
+			*addr;		/* Current interface address */
+  http_addrlist_t	*saddr;		/* Current server address */
+
+
+ /*
+  * Update the network interface list no more often than once a
+  * minute...
+  */
+
+  if ((time(NULL) - NetIFTime) < 60)
+    return;
+
+  NetIFTime = time(NULL);
+
+ /*
+  * Free the old interfaces...
+  */
+
+  cupsdNetIFFree();
+
+ /*
+  * Grab a new list of interfaces...
+  */
+
+  if (getifaddrs(&addrs) < 0)
+    return;
+
+  for (addr = addrs; addr != NULL; addr = addr->ifa_next)
+  {
+   /*
+    * See if this interface address is IPv4 or IPv6...
+    */
+
+    if (addr->ifa_addr == NULL ||
+        (addr->ifa_addr->sa_family != AF_INET
+#ifdef AF_INET6
+	 && addr->ifa_addr->sa_family != AF_INET6
+#endif
+	) ||
+        addr->ifa_netmask == NULL || addr->ifa_name == NULL)
+      continue;
+
+   /*
+    * OK, we have an IPv4/6 address, so create a new list node...
+    */
+
+    if ((temp = calloc(1, sizeof(cupsd_netif_t))) == NULL)
+      break;
+
+   /*
+    * Insert the node in sorted order; since we don't expect to
+    * have a lot of network interfaces, we just do a simple linear
+    * search...
+    */
+
+    for (current = NetIFList, prev = NULL;
+         current;
+	 prev = current, current = current->next)
+      if (strcasecmp(addr->ifa_name, current->name) <= 0)
+        break;
+
+    if (current)
+      temp->next = current;
+
+    if (prev)
+      prev->next = temp;
+    else
+      NetIFList = temp;
+
+   /*
+    * Then copy all of the information...
+    */
+
+    strlcpy(temp->name, addr->ifa_name, sizeof(temp->name));
+
+    if (addr->ifa_addr->sa_family == AF_INET)
+    {
+     /*
+      * Copy IPv4 addresses...
+      */
+
+      memcpy(&(temp->address), addr->ifa_addr, sizeof(struct sockaddr_in));
+      memcpy(&(temp->mask), addr->ifa_netmask, sizeof(struct sockaddr_in));
+
+      if (addr->ifa_dstaddr)
+	memcpy(&(temp->broadcast), addr->ifa_dstaddr,
+	       sizeof(struct sockaddr_in));
+    }
+#ifdef AF_INET6
+    else
+    {
+     /*
+      * Copy IPv6 addresses...
+      */
+
+      memcpy(&(temp->address), addr->ifa_addr, sizeof(struct sockaddr_in6));
+      memcpy(&(temp->mask), addr->ifa_netmask, sizeof(struct sockaddr_in6));
+
+      if (addr->ifa_dstaddr)
+	memcpy(&(temp->broadcast), addr->ifa_dstaddr,
+	       sizeof(struct sockaddr_in6));
+    }
+#endif /* AF_INET6 */
+
+    if (!(addr->ifa_flags & IFF_POINTOPOINT) &&
+        !httpAddrLocalhost(&(temp->address)))
+      temp->is_local = 1;
+
+   /*
+    * Determine which port to use when advertising printers...
+    */
+
+    for (i = NumListeners, lis = Listeners; i > 0; i --, lis ++)
+    {
+      match = 0;
+
+      if (httpAddrAny(&(lis->address)))
+        match = 1;
+      else if (addr->ifa_addr->sa_family == AF_INET &&
+               lis->address.addr.sa_family == AF_INET &&
+               (lis->address.ipv4.sin_addr.s_addr &
+	           temp->mask.ipv4.sin_addr.s_addr) ==
+	               temp->address.ipv4.sin_addr.s_addr)
+        match = 1;
+#ifdef AF_INET6
+      else if (addr->ifa_addr->sa_family == AF_INET6 &&
+               lis->address.addr.sa_family == AF_INET6 &&
+               (lis->address.ipv6.sin6_addr.s6_addr[0] &
+	           temp->mask.ipv6.sin6_addr.s6_addr[0]) ==
+	               temp->address.ipv6.sin6_addr.s6_addr[0] &&
+               (lis->address.ipv6.sin6_addr.s6_addr[1] &
+	           temp->mask.ipv6.sin6_addr.s6_addr[1]) ==
+	               temp->address.ipv6.sin6_addr.s6_addr[1] &&
+               (lis->address.ipv6.sin6_addr.s6_addr[2] &
+	           temp->mask.ipv6.sin6_addr.s6_addr[2]) ==
+	               temp->address.ipv6.sin6_addr.s6_addr[2] &&
+               (lis->address.ipv6.sin6_addr.s6_addr[3] &
+	           temp->mask.ipv6.sin6_addr.s6_addr[3]) ==
+	               temp->address.ipv6.sin6_addr.s6_addr[3])
+        match = 1;
+#endif /* AF_INET6 */
+
+      if (match)
+      {
+        if (lis->address.addr.sa_family == AF_INET)
+          temp->port = ntohs(lis->address.ipv4.sin_port);
+#ifdef AF_INET6
+        else if (lis->address.addr.sa_family == AF_INET6)
+          temp->port = ntohs(lis->address.ipv6.sin6_port);
+#endif /* AF_INET6 */
+	break;
+      }
+    }
+
+   /*
+    * Finally, try looking up the hostname for the address as needed...
+    */
+
+    if (HostNameLookups)
+      httpAddrLookup(&(temp->address), temp->hostname, sizeof(temp->hostname));
+    else
+    {
+     /*
+      * Map the default server address and localhost to the server name
+      * and localhost, respectively; for all other addresses, use the
+      * dotted notation...
+      */
+
+      if (httpAddrLocalhost(&(temp->address)))
+        strcpy(temp->hostname, "localhost");
+      else
+      {
+        for (saddr = ServerAddrs; saddr; saddr = saddr->next)
+	  if (httpAddrEqual(&(temp->address), &(saddr->addr)))
+	    break;
+
+	if (saddr)
+          strlcpy(temp->hostname, ServerName, sizeof(temp->hostname));
+	else
+          httpAddrString(&(temp->address), temp->hostname,
+	        	 sizeof(temp->hostname));
+      }
+    }
+
+    cupsdLogMessage(CUPSD_LOG_DEBUG, "cupsdNetIFUpdate: \"%s\" = %s...",
+                    temp->name, temp->hostname);
+  }
+
+  freeifaddrs(addrs);
+}
+
+
+#ifndef HAVE_GETIFADDRS
+/*
+ * 'getifaddrs()' - Get a list of network interfaces on the system.
+ */
+
+int					/* O - 0 on success, -1 on error */
+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);
+}
+
+
+/*
+ * 'freeifaddrs()' - Free an interface list...
+ */
+
+void
+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: network.c 4779 2005-10-12 19:44:42Z mike $".
+ */