fix oversized packets in udhcpc (closes: #962), bump busybox release number in whiter...

SVN-Revision: 5583

diff --git a/package/busybox/patches/241-udhcpc-oversized_packets.patch b/package/busybox/patches/241-udhcpc-oversized_packets.patch
new file mode 100644 (file)
index 0000000..d041bf5
--- /dev/null
+++ b/package/busybox/patches/241-udhcpc-oversized_packets.patch
@@ -0,0 +1,85 @@
+diff -ruN busybox-1.2.1-old/networking/udhcp/packet.c busybox-1.2.1-new/networking/udhcp/packet.c
+--- busybox-1.2.1-old/networking/udhcp/packet.c        2006-07-01 00:42:02.000000000 +0200
++++ busybox-1.2.1-new/networking/udhcp/packet.c        2006-11-19 01:04:40.000000000 +0100
+@@ -111,6 +111,10 @@
+       return ~sum;
+ }
+ 
++int udhcp_get_payload_len(struct dhcpMessage *payload)
++{
++      return sizeof(struct dhcpMessage) - MAX_OPTIONS_LEN + end_option(payload->options) + sizeof(payload->options[0]);
++}
+ 
+ /* Construct a ip/udp header for a packet, and specify the source and dest hardware address */
+ int udhcp_raw_packet(struct dhcpMessage *payload, uint32_t source_ip, int source_port,
+@@ -120,6 +124,7 @@
+       int result;
+       struct sockaddr_ll dest;
+       struct udp_dhcp_packet packet;
++      int p_len = udhcp_get_payload_len(payload);
+ 
+       if ((fd = socket(PF_PACKET, SOCK_DGRAM, htons(ETH_P_IP))) < 0) {
+               DEBUG(LOG_ERR, "socket call failed: %m");
+@@ -128,6 +133,7 @@
+ 
+       memset(&dest, 0, sizeof(dest));
+       memset(&packet, 0, sizeof(packet));
++      memcpy(&(packet.data), payload, p_len);
+ 
+       dest.sll_family = AF_PACKET;
+       dest.sll_protocol = htons(ETH_P_IP);
+@@ -145,18 +151,19 @@
+       packet.ip.daddr = dest_ip;
+       packet.udp.source = htons(source_port);
+       packet.udp.dest = htons(dest_port);
+-      packet.udp.len = htons(sizeof(packet.udp) + sizeof(struct dhcpMessage)); /* cheat on the psuedo-header */
++      p_len += sizeof(packet.udp);
++      packet.udp.len = htons(p_len);
+       packet.ip.tot_len = packet.udp.len;
+-      memcpy(&(packet.data), payload, sizeof(struct dhcpMessage));
+-      packet.udp.check = udhcp_checksum(&packet, sizeof(struct udp_dhcp_packet));
++      p_len += sizeof(packet.ip);
++      packet.udp.check = udhcp_checksum(&packet, p_len);
+ 
+-      packet.ip.tot_len = htons(sizeof(struct udp_dhcp_packet));
++      packet.ip.tot_len = htons(p_len);
+       packet.ip.ihl = sizeof(packet.ip) >> 2;
+       packet.ip.version = IPVERSION;
+       packet.ip.ttl = IPDEFTTL;
+       packet.ip.check = udhcp_checksum(&(packet.ip), sizeof(packet.ip));
+ 
+-      result = sendto(fd, &packet, sizeof(struct udp_dhcp_packet), 0, (struct sockaddr *) &dest, sizeof(dest));
++      result = sendto(fd, &packet, p_len, 0, (struct sockaddr *) &dest, sizeof(dest));
+       if (result <= 0) {
+               DEBUG(LOG_ERR, "write on socket failed: %m");
+       }
+@@ -201,7 +208,7 @@
+               return -1;
+       }
+ 
+-      result = write(fd, payload, sizeof(struct dhcpMessage));
++      result = write(fd, payload, udhcp_get_payload_len(payload));
+       close(fd);
+       return result;
+ }
+diff -ruN busybox-1.2.1-old/networking/udhcp/packet.h busybox-1.2.1-new/networking/udhcp/packet.h
+--- busybox-1.2.1-old/networking/udhcp/packet.h        2006-07-01 00:42:02.000000000 +0200
++++ busybox-1.2.1-new/networking/udhcp/packet.h        2006-11-19 00:49:38.000000000 +0100
+@@ -4,6 +4,8 @@
+ #include <netinet/udp.h>
+ #include <netinet/ip.h>
+ 
++#define MAX_OPTIONS_LEN  308
++
+ struct dhcpMessage {
+       uint8_t op;
+       uint8_t htype;
+@@ -20,7 +22,7 @@
+       uint8_t sname[64];
+       uint8_t file[128];
+       uint32_t cookie;
+-      uint8_t options[308]; /* 312 - cookie */
++      uint8_t options[MAX_OPTIONS_LEN]; /* 312 - cookie */
+ };
+ 
+ struct udp_dhcp_packet {