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-rw-r--r--package/ppp/patches/105-debian_demand.patch352
1 files changed, 352 insertions, 0 deletions
diff --git a/package/ppp/patches/105-debian_demand.patch b/package/ppp/patches/105-debian_demand.patch
new file mode 100644
index 0000000000..6c374174c4
--- /dev/null
+++ b/package/ppp/patches/105-debian_demand.patch
@@ -0,0 +1,352 @@
+diff -Naur ppp-2.4.4.orig/pppd/demand.c ppp-2.4.4/pppd/demand.c
+--- ppp-2.4.4.orig/pppd/demand.c 2005-08-25 08:14:18.000000000 -0400
++++ ppp-2.4.4/pppd/demand.c 2009-05-07 16:16:20.000000000 -0400
+@@ -36,6 +36,8 @@
+ #include <errno.h>
+ #include <fcntl.h>
+ #include <netdb.h>
++#include <unistd.h>
++#include <syslog.h>
+ #include <sys/param.h>
+ #include <sys/types.h>
+ #include <sys/wait.h>
+@@ -43,6 +45,8 @@
+ #include <sys/resource.h>
+ #include <sys/stat.h>
+ #include <sys/socket.h>
++#include <netinet/in.h>
++#include <arpa/inet.h>
+ #ifdef PPP_FILTER
+ #include <pcap-bpf.h>
+ #endif
+@@ -221,6 +225,14 @@
+ int c, rv;
+
+ rv = 0;
++
++/* check for synchronous connection... */
++
++ if ( (p[0] == 0xFF) && (p[1] == 0x03) ) {
++ rv = loop_frame(p,n);
++ return rv;
++ }
++
+ for (; n > 0; --n) {
+ c = *p++;
+ if (c == PPP_FLAG) {
+@@ -299,17 +311,102 @@
+ * loopback, now that the real serial link is up.
+ */
+ void
+-demand_rexmit(proto)
++demand_rexmit(proto, newip)
+ int proto;
++ u_int32_t newip;
+ {
+ struct packet *pkt, *prev, *nextpkt;
++ unsigned short checksum;
++ unsigned short pkt_checksum = 0;
++ unsigned iphdr;
++ struct timeval tv;
++ char cv = 0;
++ char ipstr[16];
+
+ prev = NULL;
+ pkt = pend_q;
+ pend_q = NULL;
++ tv.tv_sec = 1;
++ tv.tv_usec = 0;
++ select(0,NULL,NULL,NULL,&tv); /* Sleep for 1 Seconds */
+ for (; pkt != NULL; pkt = nextpkt) {
+ nextpkt = pkt->next;
+ if (PPP_PROTOCOL(pkt->data) == proto) {
++ if ( (proto == PPP_IP) && newip ) {
++ /* Get old checksum */
++
++ iphdr = (pkt->data[4] & 15) << 2;
++ checksum = *((unsigned short *) (pkt->data+14));
++ if (checksum == 0xFFFF) {
++ checksum = 0;
++ }
++
++
++ if (pkt->data[13] == 17) {
++ pkt_checksum = *((unsigned short *) (pkt->data+10+iphdr));
++ if (pkt_checksum) {
++ cv = 1;
++ if (pkt_checksum == 0xFFFF) {
++ pkt_checksum = 0;
++ }
++ }
++ else {
++ cv = 0;
++ }
++ }
++
++ if (pkt->data[13] == 6) {
++ pkt_checksum = *((unsigned short *) (pkt->data+20+iphdr));
++ cv = 1;
++ if (pkt_checksum == 0xFFFF) {
++ pkt_checksum = 0;
++ }
++ }
++
++ /* Delete old Source-IP-Address */
++ checksum -= *((unsigned short *) (pkt->data+16)) ^ 0xFFFF;
++ checksum -= *((unsigned short *) (pkt->data+18)) ^ 0xFFFF;
++
++ pkt_checksum -= *((unsigned short *) (pkt->data+16)) ^ 0xFFFF;
++ pkt_checksum -= *((unsigned short *) (pkt->data+18)) ^ 0xFFFF;
++
++ /* Change Source-IP-Address */
++ * ((u_int32_t *) (pkt->data + 16)) = newip;
++
++ /* Add new Source-IP-Address */
++ checksum += *((unsigned short *) (pkt->data+16)) ^ 0xFFFF;
++ checksum += *((unsigned short *) (pkt->data+18)) ^ 0xFFFF;
++
++ pkt_checksum += *((unsigned short *) (pkt->data+16)) ^ 0xFFFF;
++ pkt_checksum += *((unsigned short *) (pkt->data+18)) ^ 0xFFFF;
++
++ /* Write new checksum */
++ if (!checksum) {
++ checksum = 0xFFFF;
++ }
++ *((unsigned short *) (pkt->data+14)) = checksum;
++ if (pkt->data[13] == 6) {
++ *((unsigned short *) (pkt->data+20+iphdr)) = pkt_checksum;
++ }
++ if (cv && (pkt->data[13] == 17) ) {
++ *((unsigned short *) (pkt->data+10+iphdr)) = pkt_checksum;
++ }
++
++ /* Log Packet */
++ strcpy(ipstr,inet_ntoa(*( (struct in_addr *) (pkt->data+16))));
++ if (pkt->data[13] == 1) {
++ syslog(LOG_INFO,"Open ICMP %s -> %s\n",
++ ipstr,
++ inet_ntoa(*( (struct in_addr *) (pkt->data+20))));
++ } else {
++ syslog(LOG_INFO,"Open %s %s:%d -> %s:%d\n",
++ pkt->data[13] == 6 ? "TCP" : "UDP",
++ ipstr,
++ ntohs(*( (short *) (pkt->data+iphdr+4))),
++ inet_ntoa(*( (struct in_addr *) (pkt->data+20))),
++ ntohs(*( (short *) (pkt->data+iphdr+6))));
++ }
++ }
+ output(0, pkt->data, pkt->length);
+ free(pkt);
+ } else {
+diff -Naur ppp-2.4.4.orig/pppd/ipcp.c ppp-2.4.4/pppd/ipcp.c
+--- ppp-2.4.4.orig/pppd/ipcp.c 2009-05-07 15:49:34.000000000 -0400
++++ ppp-2.4.4/pppd/ipcp.c 2009-05-07 16:16:20.000000000 -0400
+@@ -1776,7 +1776,7 @@
+ proxy_arp_set[f->unit] = 1;
+
+ }
+- demand_rexmit(PPP_IP);
++ demand_rexmit(PPP_IP,go->ouraddr);
+ sifnpmode(f->unit, PPP_IP, NPMODE_PASS);
+
+ } else {
+diff -Naur ppp-2.4.4.orig/pppd/ipv6cp.c ppp-2.4.4/pppd/ipv6cp.c
+--- ppp-2.4.4.orig/pppd/ipv6cp.c 2005-08-25 19:59:34.000000000 -0400
++++ ppp-2.4.4/pppd/ipv6cp.c 2009-05-07 16:16:20.000000000 -0400
+@@ -1232,7 +1232,7 @@
+ }
+
+ }
+- demand_rexmit(PPP_IPV6);
++ demand_rexmit(PPP_IPV6,0);
+ sifnpmode(f->unit, PPP_IPV6, NPMODE_PASS);
+
+ } else {
+diff -Naur ppp-2.4.4.orig/pppd/pppd.h ppp-2.4.4/pppd/pppd.h
+--- ppp-2.4.4.orig/pppd/pppd.h 2009-05-07 15:49:34.000000000 -0400
++++ ppp-2.4.4/pppd/pppd.h 2009-05-07 16:16:20.000000000 -0400
+@@ -565,7 +565,7 @@
+ void demand_block __P((void)); /* set all NPs to queue up packets */
+ void demand_unblock __P((void)); /* set all NPs to pass packets */
+ void demand_discard __P((void)); /* set all NPs to discard packets */
+-void demand_rexmit __P((int)); /* retransmit saved frames for an NP */
++void demand_rexmit __P((int, u_int32_t)); /* retransmit saved frames for an NP*/
+ int loop_chars __P((unsigned char *, int)); /* process chars from loopback */
+ int loop_frame __P((unsigned char *, int)); /* should we bring link up? */
+
+diff -Naur ppp-2.4.4.orig/pppd/demand.c ppp-2.4.4/pppd/demand.c
+--- ppp-2.4.4.orig/pppd/demand.c 2005-08-25 08:14:18.000000000 -0400
++++ ppp-2.4.4/pppd/demand.c 2009-05-07 16:16:20.000000000 -0400
+@@ -36,6 +36,8 @@
+ #include <errno.h>
+ #include <fcntl.h>
+ #include <netdb.h>
++#include <unistd.h>
++#include <syslog.h>
+ #include <sys/param.h>
+ #include <sys/types.h>
+ #include <sys/wait.h>
+@@ -43,6 +45,8 @@
+ #include <sys/resource.h>
+ #include <sys/stat.h>
+ #include <sys/socket.h>
++#include <netinet/in.h>
++#include <arpa/inet.h>
+ #ifdef PPP_FILTER
+ #include <pcap-bpf.h>
+ #endif
+@@ -221,6 +225,14 @@
+ int c, rv;
+
+ rv = 0;
++
++/* check for synchronous connection... */
++
++ if ( (p[0] == 0xFF) && (p[1] == 0x03) ) {
++ rv = loop_frame(p,n);
++ return rv;
++ }
++
+ for (; n > 0; --n) {
+ c = *p++;
+ if (c == PPP_FLAG) {
+@@ -299,17 +311,102 @@
+ * loopback, now that the real serial link is up.
+ */
+ void
+-demand_rexmit(proto)
++demand_rexmit(proto, newip)
+ int proto;
++ u_int32_t newip;
+ {
+ struct packet *pkt, *prev, *nextpkt;
++ unsigned short checksum;
++ unsigned short pkt_checksum = 0;
++ unsigned iphdr;
++ struct timeval tv;
++ char cv = 0;
++ char ipstr[16];
+
+ prev = NULL;
+ pkt = pend_q;
+ pend_q = NULL;
++ tv.tv_sec = 1;
++ tv.tv_usec = 0;
++ select(0,NULL,NULL,NULL,&tv); /* Sleep for 1 Seconds */
+ for (; pkt != NULL; pkt = nextpkt) {
+ nextpkt = pkt->next;
+ if (PPP_PROTOCOL(pkt->data) == proto) {
++ if ( (proto == PPP_IP) && newip ) {
++ /* Get old checksum */
++
++ iphdr = (pkt->data[4] & 15) << 2;
++ checksum = *((unsigned short *) (pkt->data+14));
++ if (checksum == 0xFFFF) {
++ checksum = 0;
++ }
++
++
++ if (pkt->data[13] == 17) {
++ pkt_checksum = *((unsigned short *) (pkt->data+10+iphdr));
++ if (pkt_checksum) {
++ cv = 1;
++ if (pkt_checksum == 0xFFFF) {
++ pkt_checksum = 0;
++ }
++ }
++ else {
++ cv = 0;
++ }
++ }
++
++ if (pkt->data[13] == 6) {
++ pkt_checksum = *((unsigned short *) (pkt->data+20+iphdr));
++ cv = 1;
++ if (pkt_checksum == 0xFFFF) {
++ pkt_checksum = 0;
++ }
++ }
++
++ /* Delete old Source-IP-Address */
++ checksum -= *((unsigned short *) (pkt->data+16)) ^ 0xFFFF;
++ checksum -= *((unsigned short *) (pkt->data+18)) ^ 0xFFFF;
++
++ pkt_checksum -= *((unsigned short *) (pkt->data+16)) ^ 0xFFFF;
++ pkt_checksum -= *((unsigned short *) (pkt->data+18)) ^ 0xFFFF;
++
++ /* Change Source-IP-Address */
++ * ((u_int32_t *) (pkt->data + 16)) = newip;
++
++ /* Add new Source-IP-Address */
++ checksum += *((unsigned short *) (pkt->data+16)) ^ 0xFFFF;
++ checksum += *((unsigned short *) (pkt->data+18)) ^ 0xFFFF;
++
++ pkt_checksum += *((unsigned short *) (pkt->data+16)) ^ 0xFFFF;
++ pkt_checksum += *((unsigned short *) (pkt->data+18)) ^ 0xFFFF;
++
++ /* Write new checksum */
++ if (!checksum) {
++ checksum = 0xFFFF;
++ }
++ *((unsigned short *) (pkt->data+14)) = checksum;
++ if (pkt->data[13] == 6) {
++ *((unsigned short *) (pkt->data+20+iphdr)) = pkt_checksum;
++ }
++ if (cv && (pkt->data[13] == 17) ) {
++ *((unsigned short *) (pkt->data+10+iphdr)) = pkt_checksum;
++ }
++
++ /* Log Packet */
++ strcpy(ipstr,inet_ntoa(*( (struct in_addr *) (pkt->data+16))));
++ if (pkt->data[13] == 1) {
++ syslog(LOG_INFO,"Open ICMP %s -> %s\n",
++ ipstr,
++ inet_ntoa(*( (struct in_addr *) (pkt->data+20))));
++ } else {
++ syslog(LOG_INFO,"Open %s %s:%d -> %s:%d\n",
++ pkt->data[13] == 6 ? "TCP" : "UDP",
++ ipstr,
++ ntohs(*( (short *) (pkt->data+iphdr+4))),
++ inet_ntoa(*( (struct in_addr *) (pkt->data+20))),
++ ntohs(*( (short *) (pkt->data+iphdr+6))));
++ }
++ }
+ output(0, pkt->data, pkt->length);
+ free(pkt);
+ } else {
+diff -Naur ppp-2.4.4.orig/pppd/ipcp.c ppp-2.4.4/pppd/ipcp.c
+--- ppp-2.4.4.orig/pppd/ipcp.c 2009-05-07 15:49:34.000000000 -0400
++++ ppp-2.4.4/pppd/ipcp.c 2009-05-07 16:16:20.000000000 -0400
+@@ -1776,7 +1776,7 @@
+ proxy_arp_set[f->unit] = 1;
+
+ }
+- demand_rexmit(PPP_IP);
++ demand_rexmit(PPP_IP,go->ouraddr);
+ sifnpmode(f->unit, PPP_IP, NPMODE_PASS);
+
+ } else {
+diff -Naur ppp-2.4.4.orig/pppd/ipv6cp.c ppp-2.4.4/pppd/ipv6cp.c
+--- ppp-2.4.4.orig/pppd/ipv6cp.c 2005-08-25 19:59:34.000000000 -0400
++++ ppp-2.4.4/pppd/ipv6cp.c 2009-05-07 16:16:20.000000000 -0400
+@@ -1232,7 +1232,7 @@
+ }
+
+ }
+- demand_rexmit(PPP_IPV6);
++ demand_rexmit(PPP_IPV6,0);
+ sifnpmode(f->unit, PPP_IPV6, NPMODE_PASS);
+
+ } else {
+diff -Naur ppp-2.4.4.orig/pppd/pppd.h ppp-2.4.4/pppd/pppd.h
+--- ppp-2.4.4.orig/pppd/pppd.h 2009-05-07 15:49:34.000000000 -0400
++++ ppp-2.4.4/pppd/pppd.h 2009-05-07 16:16:20.000000000 -0400
+@@ -565,7 +565,7 @@
+ void demand_block __P((void)); /* set all NPs to queue up packets */
+ void demand_unblock __P((void)); /* set all NPs to pass packets */
+ void demand_discard __P((void)); /* set all NPs to discard packets */
+-void demand_rexmit __P((int)); /* retransmit saved frames for an NP */
++void demand_rexmit __P((int, u_int32_t)); /* retransmit saved frames for an NP*/
+ int loop_chars __P((unsigned char *, int)); /* process chars from loopback */
+ int loop_frame __P((unsigned char *, int)); /* should we bring link up? */
+
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