From 9ee442d0f9e05688f00f764bcb762c0a942e6ef3 Mon Sep 17 00:00:00 2001 From: Matteo Croce Date: Fri, 14 Nov 2014 16:39:59 +0000 Subject: [PATCH] pppd: add option to set custom host-uniq pppoe tag SVN-Revision: 43241 --- package/network/services/ppp/files/ppp.sh | 5 +- .../services/ppp/patches/520-uniq.patch | 169 ++++++++++++++++++ 2 files changed, 173 insertions(+), 1 deletion(-) create mode 100644 package/network/services/ppp/patches/520-uniq.patch diff --git a/package/network/services/ppp/files/ppp.sh b/package/network/services/ppp/files/ppp.sh index 28cdb9cbd6..df404dda39 100755 --- a/package/network/services/ppp/files/ppp.sh +++ b/package/network/services/ppp/files/ppp.sh @@ -113,6 +113,7 @@ proto_pppoe_init_config() { ppp_generic_init_config proto_config_add_string "ac" proto_config_add_string "service" + proto_config_add_string host_uniq } proto_pppoe_setup() { @@ -128,12 +129,14 @@ proto_pppoe_setup() { json_get_var ac ac json_get_var service service + json_get_var host_uniq host_uniq ppp_generic_setup "$config" \ plugin rp-pppoe.so \ ${ac:+rp_pppoe_ac "$ac"} \ ${service:+rp_pppoe_service "$service"} \ - "nic-$iface" + "nic-$iface" \ + ${host_uniq:+host-uniq "$host_uniq"} } proto_pppoe_teardown() { 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 0000000000..cbafe4cd5f --- /dev/null +++ b/package/network/services/ppp/patches/520-uniq.patch @@ -0,0 +1,169 @@ +--- a/pppd/plugins/rp-pppoe/common.c ++++ b/pppd/plugins/rp-pppoe/common.c +@@ -121,13 +121,13 @@ sendPADT(PPPoEConnection *conn, char con + /* 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 */ +--- a/pppd/plugins/rp-pppoe/discovery.c ++++ b/pppd/plugins/rp-pppoe/discovery.c +@@ -104,7 +104,7 @@ parseForHostUniq(UINT16_t type, UINT16_t + 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, PPP + /* 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 */ +--- 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 +110,7 @@ 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; +@@ -163,6 +166,9 @@ 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)); +--- a/pppd/plugins/rp-pppoe/pppoe-discovery.c ++++ b/pppd/plugins/rp-pppoe/pppoe-discovery.c +@@ -641,7 +641,7 @@ 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 +650,19 @@ 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"); +--- a/pppd/plugins/rp-pppoe/pppoe.h ++++ b/pppd/plugins/rp-pppoe/pppoe.h +@@ -224,7 +224,7 @@ 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 */ -- 2.30.2