Add pppoe 'host-uniq' option to set an arbitrary
host-uniq tag instead of the pppd pid.
---
pppd/plugins/rp-pppoe/common.c | 12 ++++++------
pppd/plugins/rp-pppoe/discovery.c | 34 ++++++++++++++++-----------------
pppd/plugins/rp-pppoe/plugin.c | 8 +++++++-
pppd/plugins/rp-pppoe/pppoe-discovery.c | 16 ++++++++++++++--
pppd/plugins/rp-pppoe/pppoe.h | 2 +-
5 files changed, 45 insertions(+), 27 deletions(-)
diff --git a/pppd/plugins/rp-pppoe/common.c b/pppd/plugins/rp-pppoe/common.c
index 89c633c..ea1c651 100644
--- a/pppd/plugins/rp-pppoe/common.c
+++ b/pppd/plugins/rp-pppoe/common.c
@@ -121,13 +121,13 @@ sendPADT(PPPoEConnection *conn, char const *msg)
/* If we're using Host-Uniq, copy it over */
if (conn->useHostUniq) {
PPPoETag hostUniq;
- pid_t pid = getpid();
+ int len = strlen(conn->useHostUniq);
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;
+ hostUniq.length = htons(len);
+ memcpy(hostUniq.payload, conn->useHostUniq, len);
+ memcpy(cursor, &hostUniq, len + TAG_HDR_SIZE);
+ cursor += len + TAG_HDR_SIZE;
+ plen += len + TAG_HDR_SIZE;
}
/* Copy error message */
diff --git a/pppd/plugins/rp-pppoe/discovery.c b/pppd/plugins/rp-pppoe/discovery.c
index 04877cb..0bce013 100644
--- a/pppd/plugins/rp-pppoe/discovery.c
+++ b/pppd/plugins/rp-pppoe/discovery.c
@@ -104,7 +104,7 @@ parseForHostUniq(UINT16_t type, UINT16_t len, unsigned char *data,
static int
packetIsForMe(PPPoEConnection *conn, PPPoEPacket *packet)
{
- int forMe = 0;
+ char *uniq = conn->useHostUniq;
/* If packet is not directed to our MAC address, forget it */
if (memcmp(packet->ethHdr.h_dest, conn->myEth, ETH_ALEN)) return 0;
@@ -112,8 +112,8 @@ packetIsForMe(PPPoEConnection *conn, PPPoEPacket *packet)
/* If we're not using the Host-Unique tag, then accept the packet */
if (!conn->useHostUniq) return 1;
- parsePacket(packet, parseForHostUniq, &forMe);
- return forMe;
+ parsePacket(packet, parseForHostUniq, &uniq);
+ return uniq != 0;
}
/**********************************************************************
@@ -303,14 +303,14 @@ sendPADI(PPPoEConnection *conn)
/* If we're using Host-Uniq, copy it over */
if (conn->useHostUniq) {
PPPoETag hostUniq;
- pid_t pid = getpid();
+ int len = strlen(conn->useHostUniq);
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;
+ hostUniq.length = htons(len);
+ memcpy(hostUniq.payload, conn->useHostUniq, len);
+ CHECK_ROOM(cursor, packet.payload, len + TAG_HDR_SIZE);
+ memcpy(cursor, &hostUniq, len + TAG_HDR_SIZE);
+ cursor += len + TAG_HDR_SIZE;
+ plen += len + TAG_HDR_SIZE;
}
/* Add our maximum MTU/MRU */
@@ -480,14 +480,14 @@ sendPADR(PPPoEConnection *conn)
/* If we're using Host-Uniq, copy it over */
if (conn->useHostUniq) {
PPPoETag hostUniq;
- pid_t pid = getpid();
+ int len = strlen(conn->useHostUniq);
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;
+ hostUniq.length = htons(len);
+ memcpy(hostUniq.payload, conn->useHostUniq, len);
+ CHECK_ROOM(cursor, packet.payload, len+TAG_HDR_SIZE);
+ memcpy(cursor, &hostUniq, len + TAG_HDR_SIZE);
+ cursor += len + TAG_HDR_SIZE;
+ plen += len + TAG_HDR_SIZE;
}
/* Add our maximum MTU/MRU */
diff --git a/pppd/plugins/rp-pppoe/plugin.c b/pppd/plugins/rp-pppoe/plugin.c
index a8c2bb4..1ce2d8b 100644
--- a/pppd/plugins/rp-pppoe/plugin.c
+++ b/pppd/plugins/rp-pppoe/plugin.c
@@ -68,6 +68,7 @@ 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[] = {
@@ -85,6 +86,8 @@ 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;
@@ -110,7 +113,7 @@ PPPOEInitDevice(void)
conn->ifName = devnam;
conn->discoverySocket = -1;
conn->sessionSocket = -1;
- conn->useHostUniq = 1;
+ conn->useHostUniq = NULL;
conn->printACNames = printACNames;
conn->discoveryTimeout = PADI_TIMEOUT;
return 1;
@@ -166,6 +169,9 @@ PPPOEConnectDevice(void)
if (lcp_wantoptions[0].mru > ifr.ifr_mtu - TOTAL_OVERHEAD)
lcp_wantoptions[0].mru = ifr.ifr_mtu - TOTAL_OVERHEAD;
+ if(host_uniq)
+ conn->useHostUniq = host_uniq;
+
conn->acName = acName;
conn->serviceName = pppd_pppoe_service;
strlcpy(ppp_devnam, devnam, sizeof(ppp_devnam));
diff --git a/pppd/plugins/rp-pppoe/pppoe-discovery.c b/pppd/plugins/rp-pppoe/pppoe-discovery.c
index 3d3bf4e..36cca88 100644
--- a/pppd/plugins/rp-pppoe/pppoe-discovery.c
+++ b/pppd/plugins/rp-pppoe/pppoe-discovery.c
@@ -644,7 +644,7 @@ 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);
@@ -653,7 +653,19 @@ int main(int argc, char *argv[])
conn->acName = xstrdup(optarg);
break;
case 'U':
- conn->useHostUniq = 1;
+ if(conn->useHostUniq) {
+ fprintf(stderr, "-U and -W are mutually exclusive\n");
+ exit(EXIT_FAILURE);
+ }
+ conn->useHostUniq = malloc(12);
+ snprintf(conn->useHostUniq, 12, "%d", getpid());
+ break;
+ case 'W':
+ if(conn->useHostUniq) {
+ fprintf(stderr, "-U and -W are mutually exclusive\n");
+ exit(EXIT_FAILURE);
+ }
+ conn->useHostUniq = xstrdup(optarg);
break;
case 'D':
conn->debugFile = fopen(optarg, "w");
diff --git a/pppd/plugins/rp-pppoe/pppoe.h b/pppd/plugins/rp-pppoe/pppoe.h
index 9ab2eee..c79232d 100644
--- a/pppd/plugins/rp-pppoe/pppoe.h
+++ b/pppd/plugins/rp-pppoe/pppoe.h
@@ -235,7 +235,7 @@ 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 */
+ char *useHostUniq; /* Use Host-Uniq tag */
int printACNames; /* Just print AC names */
FILE *debugFile; /* Debug file for dumping packets */
int numPADOs; /* Number of PADO packets received */
--
2.5.0
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