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-rw-r--r--package/network/services/ppp/patches/520-uniq.patch269
1 files changed, 269 insertions, 0 deletions
diff --git a/package/network/services/ppp/patches/520-uniq.patch b/package/network/services/ppp/patches/520-uniq.patch
new file mode 100644
index 0000000..54c0d62
--- /dev/null
+++ b/package/network/services/ppp/patches/520-uniq.patch
@@ -0,0 +1,269 @@
+--- a/pppd/plugins/rp-pppoe/common.c
++++ b/pppd/plugins/rp-pppoe/common.c
+@@ -119,15 +119,11 @@ sendPADT(PPPoEConnection *conn, char con
+ conn->session = 0;
+
+ /* If we're using Host-Uniq, copy it over */
+- if (conn->useHostUniq) {
+- PPPoETag hostUniq;
+- pid_t pid = getpid();
+- hostUniq.type = htons(TAG_HOST_UNIQ);
+- hostUniq.length = htons(sizeof(pid));
+- memcpy(hostUniq.payload, &pid, sizeof(pid));
+- memcpy(cursor, &hostUniq, sizeof(pid) + TAG_HDR_SIZE);
+- cursor += sizeof(pid) + TAG_HDR_SIZE;
+- plen += sizeof(pid) + TAG_HDR_SIZE;
++ if (conn->hostUniq.length) {
++ int len = ntohs(conn->hostUniq.length);
++ memcpy(cursor, &conn->hostUniq, len + TAG_HDR_SIZE);
++ cursor += len + TAG_HDR_SIZE;
++ plen += len + TAG_HDR_SIZE;
+ }
+
+ /* Copy error message */
+--- a/pppd/plugins/rp-pppoe/discovery.c
++++ b/pppd/plugins/rp-pppoe/discovery.c
+@@ -80,13 +80,10 @@ static void
+ parseForHostUniq(UINT16_t type, UINT16_t len, unsigned char *data,
+ void *extra)
+ {
+- int *val = (int *) extra;
+- if (type == TAG_HOST_UNIQ && len == sizeof(pid_t)) {
+- pid_t tmp;
+- memcpy(&tmp, data, len);
+- if (tmp == getpid()) {
+- *val = 1;
+- }
++ PPPoETag *tag = extra;
++
++ if (type == TAG_HOST_UNIQ && len == ntohs(tag->length)) {
++ tag->length = memcmp(data, tag->payload, len);
+ }
+ }
+
+@@ -104,16 +101,16 @@ parseForHostUniq(UINT16_t type, UINT16_t
+ static int
+ packetIsForMe(PPPoEConnection *conn, PPPoEPacket *packet)
+ {
+- int forMe = 0;
++ PPPoETag hostUniq = conn->hostUniq;
+
+ /* If packet is not directed to our MAC address, forget it */
+ if (memcmp(packet->ethHdr.h_dest, conn->myEth, ETH_ALEN)) return 0;
+
+ /* If we're not using the Host-Unique tag, then accept the packet */
+- if (!conn->useHostUniq) return 1;
++ if (!conn->hostUniq.length) return 1;
+
+- parsePacket(packet, parseForHostUniq, &forMe);
+- return forMe;
++ parsePacket(packet, parseForHostUniq, &hostUniq);
++ return (hostUniq.length == 0);
+ }
+
+ /**********************************************************************
+@@ -301,16 +298,12 @@ sendPADI(PPPoEConnection *conn)
+ }
+
+ /* If we're using Host-Uniq, copy it over */
+- if (conn->useHostUniq) {
+- PPPoETag hostUniq;
+- pid_t pid = getpid();
+- hostUniq.type = htons(TAG_HOST_UNIQ);
+- hostUniq.length = htons(sizeof(pid));
+- memcpy(hostUniq.payload, &pid, sizeof(pid));
+- CHECK_ROOM(cursor, packet.payload, sizeof(pid) + TAG_HDR_SIZE);
+- memcpy(cursor, &hostUniq, sizeof(pid) + TAG_HDR_SIZE);
+- cursor += sizeof(pid) + TAG_HDR_SIZE;
+- plen += sizeof(pid) + TAG_HDR_SIZE;
++ if (conn->hostUniq.length) {
++ int len = ntohs(conn->hostUniq.length);
++ CHECK_ROOM(cursor, packet.payload, len + TAG_HDR_SIZE);
++ memcpy(cursor, &conn->hostUniq, len + TAG_HDR_SIZE);
++ cursor += len + TAG_HDR_SIZE;
++ plen += len + TAG_HDR_SIZE;
+ }
+
+ /* Add our maximum MTU/MRU */
+@@ -478,16 +471,12 @@ sendPADR(PPPoEConnection *conn)
+ cursor += namelen + TAG_HDR_SIZE;
+
+ /* If we're using Host-Uniq, copy it over */
+- if (conn->useHostUniq) {
+- PPPoETag hostUniq;
+- pid_t pid = getpid();
+- hostUniq.type = htons(TAG_HOST_UNIQ);
+- hostUniq.length = htons(sizeof(pid));
+- memcpy(hostUniq.payload, &pid, sizeof(pid));
+- CHECK_ROOM(cursor, packet.payload, sizeof(pid)+TAG_HDR_SIZE);
+- memcpy(cursor, &hostUniq, sizeof(pid) + TAG_HDR_SIZE);
+- cursor += sizeof(pid) + TAG_HDR_SIZE;
+- plen += sizeof(pid) + TAG_HDR_SIZE;
++ if (conn->hostUniq.length) {
++ int len = ntohs(conn->hostUniq.length);
++ CHECK_ROOM(cursor, packet.payload, len+TAG_HDR_SIZE);
++ memcpy(cursor, &conn->hostUniq, len + TAG_HDR_SIZE);
++ cursor += len + TAG_HDR_SIZE;
++ plen += len + TAG_HDR_SIZE;
+ }
+
+ /* Add our maximum MTU/MRU */
+--- a/pppd/plugins/rp-pppoe/plugin.c
++++ b/pppd/plugins/rp-pppoe/plugin.c
+@@ -65,6 +65,7 @@ static char *existingSession = NULL;
+ static int printACNames = 0;
+ static char *pppoe_reqd_mac = NULL;
+ unsigned char pppoe_reqd_mac_addr[6];
++static char *host_uniq = NULL;
+
+ static int PPPoEDevnameHook(char *cmd, char **argv, int doit);
+ static option_t Options[] = {
+@@ -82,6 +83,8 @@ static option_t Options[] = {
+ "Be verbose about discovered access concentrators"},
+ { "pppoe-mac", o_string, &pppoe_reqd_mac,
+ "Only connect to specified MAC address" },
++ { "host-uniq", o_string, &host_uniq,
++ "Specify custom Host-Uniq" },
+ { NULL }
+ };
+ int (*OldDevnameHook)(char *cmd, char **argv, int doit) = NULL;
+@@ -107,7 +110,6 @@ PPPOEInitDevice(void)
+ conn->ifName = devnam;
+ conn->discoverySocket = -1;
+ conn->sessionSocket = -1;
+- conn->useHostUniq = 1;
+ conn->printACNames = printACNames;
+ conn->discoveryTimeout = PADI_TIMEOUT;
+ return 1;
+@@ -163,6 +165,9 @@ PPPOEConnectDevice(void)
+ if (lcp_wantoptions[0].mru > ifr.ifr_mtu - TOTAL_OVERHEAD)
+ lcp_wantoptions[0].mru = ifr.ifr_mtu - TOTAL_OVERHEAD;
+
++ if (host_uniq && !parseHostUniq(host_uniq, &conn->hostUniq))
++ fatal("Illegal value for host-uniq option");
++
+ conn->acName = acName;
+ conn->serviceName = pppd_pppoe_service;
+ strlcpy(ppp_devnam, devnam, sizeof(ppp_devnam));
+--- a/pppd/plugins/rp-pppoe/pppoe-discovery.c
++++ b/pppd/plugins/rp-pppoe/pppoe-discovery.c
+@@ -344,7 +344,7 @@ packetIsForMe(PPPoEConnection *conn, PPP
+ if (memcmp(packet->ethHdr.h_dest, conn->myEth, ETH_ALEN)) return 0;
+
+ /* If we're not using the Host-Unique tag, then accept the packet */
+- if (!conn->useHostUniq) return 1;
++ if (!conn->hostUniq.length) return 1;
+
+ parsePacket(packet, parseForHostUniq, &forMe);
+ return forMe;
+@@ -470,16 +470,12 @@ sendPADI(PPPoEConnection *conn)
+ cursor += namelen + TAG_HDR_SIZE;
+
+ /* If we're using Host-Uniq, copy it over */
+- if (conn->useHostUniq) {
+- PPPoETag hostUniq;
+- pid_t pid = getpid();
+- hostUniq.type = htons(TAG_HOST_UNIQ);
+- hostUniq.length = htons(sizeof(pid));
+- memcpy(hostUniq.payload, &pid, sizeof(pid));
+- CHECK_ROOM(cursor, packet.payload, sizeof(pid) + TAG_HDR_SIZE);
+- memcpy(cursor, &hostUniq, sizeof(pid) + TAG_HDR_SIZE);
+- cursor += sizeof(pid) + TAG_HDR_SIZE;
+- plen += sizeof(pid) + TAG_HDR_SIZE;
++ if (conn->hostUniq.length) {
++ int len = ntohs(conn->hostUniq.length);
++ CHECK_ROOM(cursor, packet.payload, len + TAG_HDR_SIZE);
++ memcpy(cursor, &conn->hostUniq, len + TAG_HDR_SIZE);
++ cursor += len + TAG_HDR_SIZE;
++ plen += len + TAG_HDR_SIZE;
+ }
+
+ packet.length = htons(plen);
+@@ -641,7 +637,7 @@ int main(int argc, char *argv[])
+
+ memset(conn, 0, sizeof(PPPoEConnection));
+
+- while ((opt = getopt(argc, argv, "I:D:VUAS:C:h")) > 0) {
++ while ((opt = getopt(argc, argv, "I:D:VUW:AS:C:h")) > 0) {
+ switch(opt) {
+ case 'S':
+ conn->serviceName = xstrdup(optarg);
+@@ -650,7 +646,23 @@ int main(int argc, char *argv[])
+ conn->acName = xstrdup(optarg);
+ break;
+ case 'U':
+- conn->useHostUniq = 1;
++ if(conn->hostUniq.length) {
++ fprintf(stderr, "-U and -W are mutually exclusive\n");
++ exit(EXIT_FAILURE);
++ }
++ char pidbuf[5];
++ snprintf(pidbuf, sizeof(pidbuf), "%04x", getpid());
++ parseHostUniq(pidbuf, &conn->hostUniq);
++ break;
++ case 'W':
++ if(conn->hostUniq.length) {
++ fprintf(stderr, "-U and -W are mutually exclusive\n");
++ exit(EXIT_FAILURE);
++ }
++ if (!parseHostUniq(optarg, &conn->hostUniq)) {
++ fprintf(stderr, "Invalid host-uniq argument: %s\n", optarg);
++ exit(EXIT_FAILURE);
++ }
+ break;
+ case 'D':
+ conn->debugFile = fopen(optarg, "w");
+--- a/pppd/plugins/rp-pppoe/pppoe.h
++++ b/pppd/plugins/rp-pppoe/pppoe.h
+@@ -21,6 +21,8 @@
+
+ #include <stdio.h> /* For FILE */
+ #include <sys/types.h> /* For pid_t */
++#include <ctype.h>
++#include <string.h>
+
+ /* How do we access raw Ethernet devices? */
+ #undef USE_LINUX_PACKET
+@@ -224,7 +226,7 @@ typedef struct PPPoEConnectionStruct {
+ char *serviceName; /* Desired service name, if any */
+ char *acName; /* Desired AC name, if any */
+ int synchronous; /* Use synchronous PPP */
+- int useHostUniq; /* Use Host-Uniq tag */
++ PPPoETag hostUniq; /* Use Host-Uniq tag */
+ int printACNames; /* Just print AC names */
+ FILE *debugFile; /* Debug file for dumping packets */
+ int numPADOs; /* Number of PADO packets received */
+@@ -280,6 +282,33 @@ void pppoe_printpkt(PPPoEPacket *packet,
+ void (*printer)(void *, char *, ...), void *arg);
+ void pppoe_log_packet(const char *prefix, PPPoEPacket *packet);
+
++static inline int parseHostUniq(const char *uniq, PPPoETag *tag)
++{
++ int i, len = strlen(uniq);
++
++#define hex(x) \
++ (((x) <= '9') ? ((x) - '0') : \
++ (((x) <= 'F') ? ((x) - 'A' + 10) : \
++ ((x) - 'a' + 10)))
++
++ if (len % 2)
++ return 0;
++
++ for (i = 0; i < len; i += 2)
++ {
++ if (!isxdigit(uniq[i]) || !isxdigit(uniq[i+1]))
++ return 0;
++
++ tag->payload[i / 2] = (char)(16 * hex(uniq[i]) + hex(uniq[i+1]));
++ }
++
++#undef hex
++
++ tag->type = htons(TAG_HOST_UNIQ);
++ tag->length = htons(len / 2);
++ return 1;
++}
++
+ #define SET_STRING(var, val) do { if (var) free(var); var = strDup(val); } while(0);
+
+ #define CHECK_ROOM(cursor, start, len) \
generated by cgit v1.2.3 (git 2.25.1) at 2024-04-19 19:06:07 +0000