--- /dev/null
+CC = gcc
+CFLAGS = -g -I.. -I../.. -I../../../include -D_linux_=1 -fPIC
+LDFLAGS = -shared
+INSTALL = install -o root
+
+all: pppoe.so pppoed
+
+PLUGINDIR = $(LIBDIR)/plugins
+PLUGINSRCS= pppoe.c libpppoe.c utils.c pppoehash.c pppoe_client.c \
+ pppoe_relay.c pppoe_server.c pppd_utils.c
+
+# include dependencies if present
+ifeq (.depend,$(wildcard .depend))
+include .depend
+endif
+
+
+pppoefwd: pppoefwd.o libpppoe.a
+ $(CC) -o $@ $^
+
+pppoed: pppoed.o pppd_utils.o libpppoe.a
+ $(CC) -o $@ $^
+
+libpppoe.a: pppoehash.o pppoe_client.o pppoe_relay.o pppoe_server.o \
+ utils.o libpppoe.o
+ ar -rc $@ $^
+
+pppoe.so: pppoe.o libpppoe.a
+ $(CC) -o $@ $(LDFLAGS) $^
+
+%.so: %.c
+ $(CC) -o $@ $(LDFLAGS) $(CFLAGS) $^
+
+clean:
+ rm -f *.o *.so *.a pppoefwd pppoed
+
+install: all
+ $(INSTALL) -d -m 755 $(LIBDIR)
+ $(INSTALL) -s -c -m 4550 pppoe.so $(LIBDIR)
+
+depend:
+ $(CPP) -M $(CFLAGS) $(PLUGINSRCS) >.depend
--- /dev/null
+/* PPPoE support library "libpppoe"
+ *
+ * Copyright 2000 Michal Ostrowski <mostrows@styx.uwaterloo.ca>,
+ * Jamal Hadi Salim <hadi@cyberus.ca>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
+ */
+
+#include "pppoe.h"
+
+int disc_sock=-1;
+
+int verify_packet( struct session *ses, struct pppoe_packet *p);
+
+#define TAG_DATA(type,tag_ptr) ((type *) ((struct pppoe_tag*)tag_ptr)->tag_data)
+
+
+/***************************************************************************
+ *
+ * Return the location where the next tag can be pu
+ *
+ **************************************************************************/
+static struct pppoe_tag *next_tag(struct pppoe_hdr *ph)
+{
+ return (struct pppoe_tag *)
+ (((char *) &ph->tag) + ntohs(ph->length));
+}
+
+/**************************************************************************
+ *
+ * Update header to reflect the addition of a new tag
+ *
+ **************************************************************************/
+static void add_tag(struct pppoe_hdr *ph, struct pppoe_tag *pt)
+{
+ int len = (ntohs(ph->length) +
+ ntohs(pt->tag_len) +
+ sizeof(struct pppoe_tag));
+
+ if (pt != next_tag(ph))
+ printf("PPPoE add_tag caller is buggy\n");
+
+ ph->length = htons(len);
+}
+
+/*************************************************************************
+ *
+ * Look for a tag of a specific type
+ *
+ ************************************************************************/
+struct pppoe_tag *get_tag(struct pppoe_hdr *ph, u_int16_t idx)
+{
+ char *end = (char *) next_tag(ph);
+ char *ptn = NULL;
+ struct pppoe_tag *pt = &ph->tag[0];
+
+ /*
+ * Keep processing tags while a tag header will still fit.
+ *
+ * This check will ensure that the entire tag header pointed
+ * to by pt will fit inside the message, and thus it will be
+ * valid to check the tag_type and tag_len fields.
+ */
+ while ((char *)(pt + 1) <= end) {
+ /*
+ * If the tag data would go past the end of the packet, abort.
+ */
+ ptn = (((char *) (pt + 1)) + ntohs(pt->tag_len));
+ if (ptn > end)
+ return NULL;
+
+ if (pt->tag_type == idx)
+ return pt;
+
+ pt = (struct pppoe_tag *) ptn;
+ }
+
+ return NULL;
+}
+
+/* We want to use tag names to reference into arrays containing the tag data.
+ This takes an RFC 2516 tag identifier and maps it into a local one.
+ The reverse mapping is accomplished via the tag_map array */
+#define UNMAP_TAG(x) case PTT_##x : return TAG_##x
+static inline int tag_index(int tag){
+ switch(tag){
+ UNMAP_TAG(SRV_NAME);
+ UNMAP_TAG(AC_NAME);
+ UNMAP_TAG(HOST_UNIQ);
+ UNMAP_TAG(AC_COOKIE);
+ UNMAP_TAG(VENDOR);
+ UNMAP_TAG(RELAY_SID);
+ UNMAP_TAG(SRV_ERR);
+ UNMAP_TAG(SYS_ERR);
+ UNMAP_TAG(GEN_ERR);
+ UNMAP_TAG(EOL);
+ };
+ return -1;
+}
+
+/*************************************************************************
+ *
+ * Makes a copy of a tag into a PPPoE packe
+ *
+ ************************************************************************/
+void copy_tag(struct pppoe_packet *dest, struct pppoe_tag *pt)
+{
+ struct pppoe_tag *end_tag = get_tag(dest->hdr, PTT_EOL);
+ int tagid;
+ int tag_len;
+ if( !pt ) {
+ return;
+ }
+ tagid = tag_index(pt->tag_type);
+
+ tag_len = sizeof(struct pppoe_tag) + ntohs(pt->tag_len);
+
+ if( end_tag ){
+ memcpy(((char*)end_tag)+tag_len ,
+ end_tag, sizeof(struct pppoe_tag));
+
+ dest->tags[tagid]=end_tag;
+ dest->tags[TAG_EOL] = (struct pppoe_tag*)((char*)dest->tags[TAG_EOL] + tag_len);
+ memcpy(end_tag, pt, tag_len);
+ dest->hdr->length = htons(ntohs(dest->hdr->length) + tag_len);
+
+ }else{
+ memcpy(next_tag(dest->hdr),pt, tag_len);
+ dest->tags[tagid]=next_tag(dest->hdr);
+ add_tag(dest->hdr,next_tag(dest->hdr));
+ }
+
+
+}
+
+
+/*************************************************************************
+ *
+ * Put tags from a packet into a nice array
+ *
+ ************************************************************************/
+static void extract_tags(struct pppoe_hdr *ph, struct pppoe_tag** buf){
+ int i=0;
+ for(;i<MAX_TAGS;++i){
+ buf[i] = get_tag(ph,tag_map[i]);
+ }
+}
+
+
+/*************************************************************************
+ *
+ * Verify that a packet has a tag containint a specific value
+ *
+ ************************************************************************/
+static int verify_tag(struct session* ses,
+ struct pppoe_packet* p,
+ unsigned short id,
+ char* data,
+ int data_len)
+{
+ int len;
+ struct pppoe_tag *pt = p->tags[id];
+
+ if( !pt ){
+ poe_info(ses,"Missing tag %d. Expected %s\n",
+ id,data);
+ return 0;
+ }
+ len = ntohs(pt->tag_len);
+ if(len != data_len){
+ poe_info(ses,"Length mismatch on tag %d: expect: %d got: %d\n",
+ id, data_len, len);
+ return 0;
+ }
+
+ if( 0!=memcmp(pt->tag_data,data,data_len)){
+ poe_info(ses,"Tag data mismatch on tag %d: expect: %s vs %s\n",
+ id, data,pt->tag_data);
+ return 0;
+ }
+ return 1;
+}
+
+
+/*************************************************************************
+ *
+ * Verify the existence of an ethernet device.
+ * Construct an AF_PACKET address struct to match.
+ *
+ ************************************************************************/
+int get_sockaddr_ll(const char *devnam,struct sockaddr_ll* sll){
+ struct ifreq ifr;
+ int retval;
+
+ if(disc_sock<0){
+
+ disc_sock = socket(PF_PACKET, SOCK_DGRAM, 0);
+ if( disc_sock < 0 ){
+ return -1;
+ }
+ }
+
+ strncpy(ifr.ifr_name, devnam, sizeof(ifr.ifr_name));
+
+ retval = ioctl( disc_sock , SIOCGIFINDEX, &ifr);
+
+ if( retval < 0 ){
+// error("Bad device name: %s (%m)",devnam);
+ return 0;
+ }
+
+ if(sll) sll->sll_ifindex = ifr.ifr_ifindex;
+
+ retval = ioctl (disc_sock, SIOCGIFHWADDR, &ifr);
+ if( retval < 0 ){
+// error("Bad device name: %s (%m)",devnam);
+ return 0;
+ }
+
+ if (ifr.ifr_hwaddr.sa_family != ARPHRD_ETHER) {
+ error("Interface %s is not Ethernet!", devnam);
+ return 0;
+ }
+ if(sll){
+ sll->sll_family = AF_PACKET;
+ sll->sll_protocol= ntohs(ETH_P_PPP_DISC);
+ sll->sll_hatype = ARPHRD_ETHER;
+ sll->sll_pkttype = PACKET_BROADCAST;
+ sll->sll_hatype = ETH_ALEN;
+ memcpy( sll->sll_addr , ifr.ifr_hwaddr.sa_data, ETH_ALEN);
+ }
+ return 1;
+}
+
+
+
+
+/*************************************************************************
+ *
+ * Construct and send a discovery message.
+ *
+ ************************************************************************/
+int send_disc(struct session *ses, struct pppoe_packet *p)
+{
+ char buf[MAX_PAYLOAD + sizeof(struct pppoe_hdr)];
+ int data_len = sizeof(struct pppoe_hdr);
+
+ struct pppoe_hdr *ph = NULL;
+ struct pppoe_tag *tag = NULL;
+ int i, error = 0;
+ int got_host_uniq = 0;
+ int got_srv_name = 0;
+ int got_ac_name = 0;
+
+ for (i = 0; i < MAX_TAGS; i++) {
+ if (!p->tags[i])
+ continue;
+
+ got_host_uniq |= (p->tags[i]->tag_type == PTT_HOST_UNIQ);
+
+ /* Relay identifiers qualify as HOST_UNIQ's:
+ we need HOST_UNIQ to uniquely identify the packet,
+ PTT_RELAY_SID is sufficient for us for outgoing packets */
+ got_host_uniq |= (p->tags[i]->tag_type == PTT_RELAY_SID);
+
+ got_srv_name |= (p->tags[i]->tag_type == PTT_SRV_NAME);
+ got_ac_name |= (p->tags[i]->tag_type == PTT_AC_NAME);
+
+ data_len += (ntohs(p->tags[i]->tag_len) +
+ sizeof(struct pppoe_tag));
+ }
+
+ ph = (struct pppoe_hdr *) buf;
+
+
+ memcpy(ph, p->hdr, sizeof(struct pppoe_hdr));
+ ph->length = __constant_htons(0);
+
+ /* if no HOST_UNIQ tags --- add one with process id */
+ if (!got_host_uniq){
+ data_len += (sizeof(struct pppoe_tag) +
+ sizeof(struct session *));
+ tag = next_tag(ph);
+ tag->tag_type = PTT_HOST_UNIQ;
+ tag->tag_len = htons(sizeof(struct session *));
+ memcpy(tag->tag_data,
+ &ses,
+ sizeof(struct session *));
+
+ add_tag(ph, tag);
+ }
+
+ if( !got_srv_name ){
+ data_len += sizeof(struct pppoe_tag);
+ tag = next_tag(ph);
+ tag->tag_type = PTT_SRV_NAME;
+ tag->tag_len = 0;
+ add_tag(ph, tag);
+ }
+
+ if(!got_ac_name && ph->code==PADO_CODE){
+ data_len += sizeof(struct pppoe_tag);
+ tag = next_tag(ph);
+ tag->tag_type = PTT_AC_NAME;
+ tag->tag_len = 0;
+ add_tag(ph, tag);
+ }
+
+ for (i = 0; i < MAX_TAGS; i++) {
+ if (!p->tags[i])
+ continue;
+
+ tag = next_tag(ph);
+ memcpy(tag, p->tags[i],
+ sizeof(struct pppoe_tag) + ntohs(p->tags[i]->tag_len));
+
+ add_tag(ph, tag);
+ }
+
+ /* Now fixup the packet struct to make sure all of its pointers
+ are self-contained */
+ memcpy( p->hdr , ph, data_len );
+ extract_tags( p->hdr, p->tags);
+
+ error = sendto(disc_sock, buf, data_len, 0,
+ (struct sockaddr*) &p->addr,
+ sizeof(struct sockaddr_ll));
+
+ if(error < 0)
+ poe_error(ses,"sendto returned: %m\n");
+
+ return error;
+}
+
+/*************************************************************************
+ *
+ * Verify that a packet is legal
+ *
+ *************************************************************************/
+int verify_packet( struct session *ses, struct pppoe_packet *p){
+ struct session * hu_val;
+
+ /* This code here should do all of the error checking and
+ validation on the incoming packet */
+
+
+ /* If we receive any error tags, abort */
+#define CHECK_TAG(name, val) \
+ if((NULL==p->tags[name])== val){ \
+ poe_error(ses,"Tag error: " #name ); \
+ return -1; \
+ }
+
+
+
+ CHECK_TAG(TAG_SRV_ERR,0);
+ CHECK_TAG(TAG_SYS_ERR,0);
+ CHECK_TAG(TAG_GEN_ERR,0);
+
+ /* A HOST_UNIQ must be present */
+ CHECK_TAG(TAG_HOST_UNIQ,1);
+
+ hu_val = *TAG_DATA(struct session* ,p->tags[TAG_HOST_UNIQ]);
+
+ if( hu_val != ses ){
+ poe_info(ses,"HOST_UNIQ mismatch: %08x %i\n",(int)hu_val,getpid());
+ return -1;
+ }
+
+ if(ses->filt->htag &&
+ !verify_tag(ses,p,TAG_HOST_UNIQ,ses->filt->htag->tag_data,(int)ntohs(ses->filt->htag->tag_len)))
+ return -1;
+ else
+ poe_info(ses,"HOST_UNIQ successful match\n");
+
+
+ if(ses->filt->ntag &&
+ !verify_tag(ses,p,TAG_AC_NAME,ses->filt->ntag->tag_data,(int)ntohs(ses->filt->ntag->tag_len))){
+ poe_info(ses,"AC_NAME failure");
+ return -1;
+ }
+
+ if(ses->filt->stag &&
+ !verify_tag(ses,p,TAG_SRV_NAME,ses->filt->stag->tag_data,(int)ntohs(ses->filt->stag->tag_len))){
+ poe_info(ses,"SRV_NAME failure");
+ return -1;
+ }
+
+}
+
+
+/*************************************************************************
+ *
+ * Receive and verify an incoming packet.
+ *
+ *************************************************************************/
+static int recv_disc( struct session *ses,
+ struct pppoe_packet *p){
+ int error = 0;
+ unsigned int from_len = sizeof(struct sockaddr_ll);
+ struct session* hu_val;
+ struct pppoe_tag *pt;
+
+ p->hdr = (struct pppoe_hdr*)p->buf;
+
+ error = recvfrom( disc_sock, p->buf, 1500, 0,
+ (struct sockaddr*)&p->addr, &from_len);
+
+ if(error < 0) return error;
+
+ extract_tags(p->hdr,p->tags);
+
+ return 1;
+}
+
+
+/*************************************************************************
+ *
+ * Send a PADT
+ *
+ *************************************************************************/
+int session_disconnect(struct session *ses){
+ struct pppoe_packet padt;
+
+ memset(&padt,0,sizeof(struct pppoe_packet));
+ memcpy(&padt.addr, &ses->remote, sizeof(struct sockaddr_ll));
+
+ padt.hdr = (struct pppoe_hdr*) ses->curr_pkt.buf;
+ padt.hdr->ver = 1;
+ padt.hdr->type = 1;
+ padt.hdr->code = PADT_CODE;
+ padt.hdr->sid = ses->sp.sa_addr.pppoe.sid;
+
+ send_disc(ses,&padt);
+ ses->sp.sa_addr.pppoe.sid = 0 ;
+ ses->state = PADO_CODE;
+ return 0;
+
+}
+
+
+/*************************************************************************
+ *
+ * Make a connection -- behaviour depends on callbacks specified in "ses"
+ *
+ *************************************************************************/
+int session_connect(struct session *ses)
+{
+
+ int pkt_size=0;
+ int ret_pkt_size=0;
+ struct pppoe_tag *tags = NULL;
+ struct pppoe_packet *p_out=NULL;
+ struct pppoe_packet rcv_packet;
+ int ret;
+
+
+ if(ses->init_disc){
+ ret = (*ses->init_disc)(ses, NULL, &p_out);
+ if( ret != 0 ) return ret;
+ }
+
+ /* main discovery loop */
+
+
+ while(ses->retransmits < ses->retries || ses->retries==-1 ){
+
+ fd_set in;
+ struct timeval tv;
+ FD_ZERO(&in);
+
+ FD_SET(disc_sock,&in);
+
+ if(ses->retransmits>=0){
+ ++ses->retransmits;
+ tv.tv_sec = 1 << ses->retransmits;
+ tv.tv_usec = 0;
+ ret = select(disc_sock+1, &in, NULL, NULL, &tv);
+ }else{
+ ret = select(disc_sock+1, &in, NULL, NULL, NULL);
+ }
+
+ if( ret == 0 ){
+ if( DEB_DISC ){
+ poe_dbglog(ses, "Re-sending ...");
+ }
+
+ if( ses->timeout ){
+ ret = (*ses->timeout)(ses, NULL, &p_out);
+ if( ret != 0 )
+ return ret;
+
+ }else if(p_out){
+ send_disc(ses,p_out);
+ }
+ continue;
+ }
+
+
+ ret = recv_disc(ses, &rcv_packet);
+
+ /* Should differentiate between system errors and
+ bad packets and the like... */
+ if( ret < 0 && errno != EINTR){
+
+ return -1;
+ }
+
+
+
+
+ switch (rcv_packet.hdr->code) {
+
+ case PADI_CODE:
+ {
+ if(ses->rcv_padi){
+ ret = (*ses->rcv_padi)(ses,&rcv_packet,&p_out);
+
+ if( ret != 0){
+ return ret;
+ }
+ }
+ break;
+ }
+
+ case PADO_CODE: /* wait for PADO */
+ {
+ if(ses->rcv_pado){
+ ret = (*ses->rcv_pado)(ses,&rcv_packet,&p_out);
+
+ if( ret != 0){
+ return ret;
+ }
+ }
+ break;
+ }
+
+ case PADR_CODE:
+ {
+ if(ses->rcv_padr){
+ ret = (*ses->rcv_padr)(ses,&rcv_packet,&p_out);
+
+ if( ret != 0){
+ return ret;
+ }
+ }
+ break;
+ }
+
+ case PADS_CODE:
+ {
+ if(ses->rcv_pads){
+ ret = (*ses->rcv_pads)(ses,&rcv_packet,&p_out);
+
+ if( ret != 0){
+ return ret;
+ }
+ }
+ break;
+ }
+
+ case PADT_CODE:
+ {
+ if( rcv_packet.hdr->sid != ses->sp.sa_addr.pppoe.sid ){
+ --ses->retransmits;
+ continue;
+ }
+ if(ses->rcv_padt){
+ ret = (*ses->rcv_padt)(ses,&rcv_packet,&p_out);
+
+ if( ret != 0){
+ return ret;
+ }
+ }else{
+ poe_error (ses,"connection terminated");
+ return (-1);
+ }
+ break;
+ }
+ default:
+ poe_error(ses,"invalid packet %P",&rcv_packet);
+ return (-1);
+ }
+ }
+ return (0);
+}
+
+
+/*************************************************************************
+ *
+ * Register an ethernet address as a client of relaying services.
+ *
+ *************************************************************************/
+int add_client(char *addr)
+{
+ struct pppoe_con* pc = (struct pppoe_con*)malloc(sizeof(struct pppoe_con));
+ int ret;
+ if(!pc)
+ return -ENOMEM;
+
+ memset(pc, 0 , sizeof(struct pppoe_con));
+
+ memcpy(pc->client,addr, ETH_ALEN);
+ memcpy(pc->key, addr, ETH_ALEN);
+
+ pc->key_len = ETH_ALEN;
+
+ if( (ret=store_con(pc)) < 0 ){
+ free(pc);
+ }
+ return ret;
+
+}
+
+struct pppoe_tag *make_filter_tag(short type, short length, char* data){
+ struct pppoe_tag *pt =
+ (struct pppoe_tag* )malloc( sizeof(struct pppoe_tag) + length );
+
+ if(pt == NULL) return NULL;
+
+ pt->tag_len=htons(length);
+ pt->tag_type=type;
+
+ if(length>0 && data){
+ memcpy( pt+1, data, length);
+ }
+ return pt;
+}
--- /dev/null
+/* PPPoE support library "libpppoe"
+ *
+ * Copyright 2000 Michal Ostrowski <mostrows@styx.uwaterloo.ca>,
+ * Jamal Hadi Salim <hadi@cyberus.ca>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
+ */
+#include "pppoe.h"
+
+/*
+ *
+ */
+int build_ppp_opts(char *args[],struct session *ses)
+{
+ char buf[256];
+ int retval=0,i=0;
+
+ memset(buf,0,256);
+
+/* pppds path */
+ if ( NULL != ses->filt->pppd){
+ args[0]=(char *)malloc(strlen(ses->filt->pppd));
+ strcpy (args[0],ses->filt->pppd);
+ } else {
+ args[0]=(char *)malloc(strlen(_PATH_PPPD));
+ strcpy (args[0],_PATH_PPPD);
+ }
+
+/* long device name */
+ snprintf(buf, 256,"%02x:%02x:%02x:%02x:%02x:%02x/%04x/%s",
+ ses->remote.sll_addr[0],
+ ses->remote.sll_addr[1],
+ ses->remote.sll_addr[2],
+ ses->remote.sll_addr[3],
+ ses->remote.sll_addr[4],
+ ses->remote.sll_addr[5],
+ ses->sp.sa_addr.pppoe.sid,
+ ses->name);
+ args[1]=(char *)malloc(strlen(buf));
+ strcpy(args[1],buf);
+
+ i=2;
+
+/* override options file */
+ if (NULL != ses->filt->fname ) {
+
+ if (!ses->filt->peermode) {
+ args[i]=(char *)malloc(strlen("file"));
+ strcpy (args[i],"file");
+ i++;
+ args[i]=(char *)malloc(strlen(ses->filt->fname)+1);
+ strcpy (args[i],ses->filt->fname);
+ i++;
+ } else{ /* peermode */
+ args[i]=(char *)malloc(strlen("call"));
+ strcpy (args[i],"call");
+ i++;
+ args[i]=(char *)malloc(strlen(ses->filt->fname)+1);
+ strcpy (args[i],ses->filt->fname);
+ i++;
+ }
+ }
+
+/* user requested for a specific name */
+ if (NULL != ses->filt->ntag) {
+ if ( NULL != ses->filt->ntag->tag_data) {
+ args[i]=(char *)malloc(strlen("pppoe_ac_name"));
+ strcpy(args[i],"pppoe_ac_name");
+ i++;
+ args[i]=(char *)malloc(ntohs(ses->filt->ntag->tag_len));
+ strcpy(args[i],ses->filt->ntag->tag_data);
+ i++;
+ }
+ }
+/* user requested for a specific service name */
+ if (NULL != ses->filt->stag) {
+ if ( NULL != ses->filt->stag->tag_data) {
+ args[i]=(char *)malloc(strlen("pppoe_srv_name"));
+ strcpy(args[i],"pppoe_srv_name");
+ i++;
+ args[i]=(char *)malloc(ntohs(ses->filt->stag->tag_len));
+ strcpy(args[i],ses->filt->stag->tag_data);
+ i++;
+ }
+ }
+
+/*
+ */
+ if (ses->opt_daemonize) {
+ args[i]=(char *)malloc(strlen("nodetach"));
+ strcpy(args[i],"nodetach");
+ i++;
+ }
+
+ args[i]=NULL;
+ {
+ int j;
+ poe_info(ses,"calling pppd with %d args\n",i);
+ j=i;
+ for (i=0; i<j,NULL !=args[i]; i++) {
+ poe_info(ses," <%d: %s > \n",i,args[i]);
+ }
+ }
+ return retval;
+}
+
+
+/*
+ *
+ */
+int ppp_connect (struct session *ses)
+{
+ int ret,pid;
+ char *args[32];
+
+
+ poe_info(ses,"calling ses_connect\n");
+ do{
+ ret = session_connect(ses);
+ }while(ret == 0);
+
+ if (ret > 0 )
+ if (ses->np == 1 && ret == 1)
+ return ses->np; /* -G */
+ if (ses->np == 2)
+ return ses->np; /* -H */
+
+ if( ret <= 0){
+ return ret;
+ }
+
+ poe_info(ses,"DONE calling ses_connect np is %d \n",ses->np);
+
+
+ pid = fork ();
+ if (pid < 0) {
+ poe_error (ses,"unable to fork() for pppd: %m");
+ poe_die (-1);
+ }
+
+
+ if(!pid) {
+ poe_info(ses,"calling build_ppp_opts\n");
+ if (0> build_ppp_opts(args,ses)) {
+ poe_error(ses,"ppp_connect: failed to build ppp_opts\n");
+ return -1;
+ }
+ execvp(args[0],args);
+ poe_info (ses," child got killed");
+ } else if( ses->type == SESSION_CLIENT) {
+ if (!ses->opt_daemonize)
+ return 1;
+ pause();
+ poe_info (ses," OK we got killed");
+ return -1;
+ }
+ return 1;
+}
+
--- /dev/null
+/* pppoe.c - pppd plugin to implement PPPoE protocol.
+ *
+ * Copyright 2000 Michal Ostrowski <mostrows@styx.uwaterloo.ca>,
+ * Jamal Hadi Salim <hadi@cyberus.ca>
+ * Borrows heavily from the PPPoATM plugin by Mitchell Blank Jr.,
+ * which is based in part on work from Jens Axboe and Paul Mackerras.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
+ */
+
+#include <string.h>
+#include <sys/ioctl.h>
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <unistd.h>
+#include <errno.h>
+#include <sys/stat.h>
+#include "pppoe.h"
+#if _linux_
+extern int new_style_driver; /* From sys-linux.c */
+#include <linux/ppp_defs.h>
+#include <linux/if_pppox.h>
+#include <linux/if_ppp.h>
+#else
+#error this module meant for use with linux only at this time
+#endif
+
+
+#include "pppd.h"
+#include "fsm.h"
+#include "lcp.h"
+#include "ipcp.h"
+#include "ccp.h"
+#include "pathnames.h"
+#define _PATH_ETHOPT _ROOT_PATH "/etc/ppp/options."
+
+#define PPPOE_MTU 1492
+extern int kill_link;
+static char *bad_options[] = {
+ "noaccomp",
+ "-ac",
+ "default-asyncmap",
+ "-am",
+ "asyncmap",
+ "-as",
+ "escape",
+ "multilink",
+ "receive-all",
+ "crtscts",
+ "-crtscts",
+ "nocrtscts",
+ "cdtrcts",
+ "nocdtrcts",
+ "xonxoff",
+ "modem",
+ "local",
+ "sync",
+ "deflate",
+ "nodeflate",
+ "vj",
+ "novj",
+ "nobsdcomp",
+ "bsdcomp",
+ "-bsdcomp",
+ NULL
+};
+
+bool pppoe_server=0;
+char *pppoe_srv_name=NULL;
+char *pppoe_ac_name=NULL;
+char *hostuniq = NULL;
+int retries = 0;
+
+int setdevname_pppoe(const char *cp);
+
+static option_t pppoe_options[] = {
+ { "device name", o_wild, (void *) &setdevname_pppoe,
+ "Serial port device name",
+ OPT_DEVNAM | OPT_PRIVFIX | OPT_NOARG | OPT_A2STRVAL | OPT_STATIC,
+ devnam},
+ { "pppoe_srv_name", o_string, &pppoe_srv_name,
+ "PPPoE service name"},
+ { "pppoe_ac_name", o_string, &pppoe_ac_name,
+ "PPPoE access concentrator name"},
+ { "pppoe_hostuniq", o_string, &hostuniq,
+ "PPPoE client uniq hostid "},
+ { "pppoe_retransmit", o_int, &retries,
+ "PPPoE client number of retransmit tries"},
+ { "pppoe_server", o_bool, &pppoe_server,
+ "PPPoE listen for incoming requests",1},
+ { NULL }
+};
+
+
+
+struct session *ses = NULL;
+static int connect_pppoe_ses(void)
+{
+ int i,err=-1;
+ if( pppoe_server == 1 ){
+ srv_init_ses(ses,devnam);
+ }else{
+ client_init_ses(ses,devnam);
+ }
+#if 0
+ ses->np=1; /* jamal debug the discovery portion */
+#endif
+ strlcpy(ppp_devnam, devnam, sizeof(ppp_devnam));
+
+ err= session_connect ( ses );
+
+ if(err < 0){
+ poe_fatal(ses,"Failed to negotiate PPPoE connection: %d %m",errno,errno);
+ }
+
+
+ poe_info(ses,"Connecting PPPoE socket: %E %04x %s %p",
+ ses->sp.sa_addr.pppoe.remote,
+ ses->sp.sa_addr.pppoe.sid,
+ ses->sp.sa_addr.pppoe.dev,ses);
+
+ err = connect(ses->fd, (struct sockaddr*)&ses->sp,
+ sizeof(struct sockaddr_pppox));
+
+
+ if( err < 0 ){
+ poe_fatal(ses,"Failed to connect PPPoE socket: %d %m",errno,errno);
+ return err;
+ }
+#if 0
+ if (ses->np)
+ fatal("discovery complete\n");
+#endif
+ /* Once the logging is fixed, print a message here indicating
+ connection parameters */
+
+ return ses->fd;
+}
+
+static void disconnect_pppoe_ses(void)
+{
+ int ret;
+ warn("Doing disconnect");
+ session_disconnect(ses);
+ ses->sp.sa_addr.pppoe.sid = 0;
+ ret = connect(ses->fd, (struct sockaddr*)&ses->sp,
+ sizeof(struct sockaddr_pppox));
+
+}
+
+
+static int setspeed_pppoe(const char *cp)
+{
+ return 0;
+}
+
+static void init_device_pppoe(void)
+{
+ struct filter *filt;
+ unsigned int size=0;
+ ses=(void *)malloc(sizeof(struct session));
+ if(!ses){
+ fatal("No memory for new PPPoE session");
+ }
+ memset(ses,0,sizeof(struct session));
+
+ if ((ses->filt=malloc(sizeof(struct filter))) == NULL) {
+ poe_error (ses,"failed to malloc for Filter ");
+ poe_die (-1);
+ }
+
+ filt=ses->filt; /* makes the code more readable */
+ memset(filt,0,sizeof(struct filter));
+
+ if (pppoe_ac_name !=NULL) {
+ if (strlen (pppoe_ac_name) > 255) {
+ poe_error (ses," AC name too long (maximum allowed 256 chars)");
+ poe_die(-1);
+ }
+ ses->filt->ntag = make_filter_tag(PTT_AC_NAME,
+ strlen(pppoe_ac_name),
+ pppoe_ac_name);
+
+ if ( ses->filt->ntag== NULL) {
+ poe_error (ses,"failed to malloc for AC name");
+ poe_die(-1);
+ }
+
+ }
+
+
+ if (pppoe_srv_name !=NULL) {
+ if (strlen (pppoe_srv_name) > 255) {
+ poe_error (ses," Service name too long
+ (maximum allowed 256 chars)");
+ poe_die(-1);
+ }
+ ses->filt->stag = make_filter_tag(PTT_SRV_NAME,
+ strlen(pppoe_srv_name),
+ pppoe_srv_name);
+ if ( ses->filt->stag == NULL) {
+ poe_error (ses,"failed to malloc for service name");
+ poe_die(-1);
+ }
+ }
+
+ if (hostuniq) {
+ ses->filt->htag = make_filter_tag(PTT_HOST_UNIQ,
+ strlen(hostuniq),
+ hostuniq);
+ if ( ses->filt->htag == NULL) {
+ poe_error (ses,"failed to malloc for Uniq Host Id ");
+ poe_die(-1);
+ }
+ }
+
+ if (retries) {
+ ses->retries=retries;
+ }
+
+ memcpy( ses->name, devnam, IFNAMSIZ);
+ ses->opt_debug=1;
+}
+
+static void pppoe_extra_options()
+{
+ int ret;
+ char buf[256];
+ snprintf(buf, 256, _PATH_ETHOPT "%s",devnam);
+ if(!options_from_file(buf, 0, 0, 1))
+ exit(EXIT_OPTION_ERROR);
+
+}
+
+
+
+static void send_config_pppoe(int mtu,
+ u_int32_t asyncmap,
+ int pcomp,
+ int accomp)
+{
+ int sock;
+ struct ifreq ifr;
+
+ if (mtu > PPPOE_MTU) {
+ warn("Not increasing MTU to %d, max is %d", mtu, PPPOE_MTU);
+ return;
+ }
+}
+
+
+static void recv_config_pppoe(int mru,
+ u_int32_t asyncmap,
+ int pcomp,
+ int accomp)
+{
+ if (mru > PPPOE_MTU)
+ error("Not increasing MRU to %d, max is %d", mru, PPPOE_MTU);
+}
+
+static void set_xaccm_pppoe(int unit, ext_accm accm)
+{
+ /* NOTHING */
+}
+
+
+
+struct channel pppoe_channel;
+/* Check is cp is a valid ethernet device
+ * return either 1 if "cp" is a reasonable thing to name a device
+ * or die.
+ * Note that we don't actually open the device at this point
+ * We do need to fill in:
+ * devnam: a string representation of the device
+ */
+
+int (*old_setdevname_hook)(const char* cp) = NULL;
+int setdevname_pppoe(const char *cp)
+{
+ int ret;
+ char dev[IFNAMSIZ+1];
+ int addr[ETH_ALEN];
+ int sid;
+
+ char **a;
+ ret =sscanf(cp, FMTSTRING(IFNAMSIZ),addr, addr+1, addr+2,
+ addr+3, addr+4, addr+5,&sid,dev);
+ if( ret != 8 ){
+
+ ret = get_sockaddr_ll(cp,NULL);
+ if (ret < 0)
+ fatal("PPPoE: Cannot create PF_PACKET socket for PPPoE discovery\n");
+ if (ret == 1)
+ strncpy(devnam, cp, sizeof(devnam));
+ }else{
+ /* long form parsed */
+ ret = get_sockaddr_ll(dev,NULL);
+ if (ret < 0)
+ fatal("PPPoE: Cannot create PF_PACKET socket for PPPoE discovery\n");
+
+ strncpy(devnam, cp, sizeof(devnam));
+ ret = 1;
+ }
+
+
+ if( ret == 1 && the_channel != &pppoe_channel ){
+
+ the_channel = &pppoe_channel;
+
+ lcp_allowoptions[0].neg_accompression = 0;
+ lcp_wantoptions[0].neg_accompression = 0;
+
+ lcp_allowoptions[0].neg_asyncmap = 0;
+ lcp_wantoptions[0].neg_asyncmap = 0;
+
+ lcp_allowoptions[0].neg_pcompression = 0;
+ lcp_wantoptions[0].neg_pcompression = 0;
+
+ ccp_allowoptions[0].deflate = 0 ;
+ ccp_wantoptions[0].deflate = 0 ;
+
+ ipcp_allowoptions[0].neg_vj=0;
+ ipcp_wantoptions[0].neg_vj=0;
+
+ ccp_allowoptions[0].bsd_compress = 0;
+ ccp_wantoptions[0].bsd_compress = 0;
+
+ init_device_pppoe();
+ }
+ return ret;
+}
+
+
+
+void plugin_init(void)
+{
+/*
+ fatal("PPPoE plugin loading...");
+*/
+
+#if _linux_
+ if (!ppp_available() && !new_style_driver)
+ fatal("Kernel doesn't support ppp_generic needed for PPPoE");
+#else
+ fatal("No PPPoE support on this OS");
+#endif
+ add_options(pppoe_options);
+
+
+ info("PPPoE Plugin Initialized");
+}
+
+struct channel pppoe_channel = {
+ options: pppoe_options,
+ process_extra_options: &pppoe_extra_options,
+ check_options: NULL,
+ connect: &connect_pppoe_ses,
+ disconnect: &disconnect_pppoe_ses,
+ establish_ppp: &generic_establish_ppp,
+ disestablish_ppp: &generic_disestablish_ppp,
+ send_config: &send_config_pppoe,
+ recv_config: &recv_config_pppoe,
+ close: NULL,
+ cleanup: NULL
+};
+
--- /dev/null
+/* PPPoE support library "libpppoe"
+ *
+ * Copyright 2000 Michal Ostrowski <mostrows@styx.uwaterloo.ca>,
+ * Jamal Hadi Salim <hadi@cyberus.ca>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
+ */
+
+#ifndef PPPOE_H
+#define PPPOE_H 1
+#include <stdio.h> /* stdio */
+#include <stdlib.h> /* strtoul(), realloc() */
+#include <unistd.h> /* STDIN_FILENO,exec */
+#include <string.h> /* memcpy() */
+#include <errno.h> /* errno */
+#include <signal.h>
+#include <getopt.h>
+#include <stdarg.h>
+#include <syslog.h>
+#include <paths.h>
+
+#include <sys/types.h> /* socket types */
+#include <asm/types.h>
+#include <sys/time.h>
+#include <sys/wait.h>
+#include <sys/fcntl.h>
+#include <sys/ioctl.h> /* ioctl() */
+#include <sys/select.h>
+#include <sys/socket.h> /* socket() */
+#include <net/if.h> /* ifreq struct */
+#include <net/if_arp.h>
+#include <netinet/in.h>
+
+#if __GLIBC__ >= 2 && __GLIBC_MINOR >= 1
+#include <netpacket/packet.h>
+//#include <net/ethernet.h>
+#else
+#include <asm/types.h>
+#include <linux/if_packet.h>
+#include <linux/if_ether.h>
+#endif
+
+
+#include <asm/byteorder.h>
+
+/*
+ jamal: we really have to change this
+ to make it compatible to the 2.2 and
+ 2.3 kernel
+*/
+
+#include <linux/if_pppox.h>
+
+
+#define CONNECTED 1
+#define DISCONNECTED 0
+
+#ifndef _PATH_PPPD
+#define _PATH_PPPD "/usr/sbin/pppd"
+#endif
+
+#ifndef LOG_PPPOE
+#define LOG_PPPOE LOG_DAEMON
+#endif
+
+
+#define VERSION_MAJOR 0
+#define VERSION_MINOR 4
+#define VERSION_DATE 991120
+
+/* Bigger than the biggest ethernet packet we'll ever see, in bytes */
+#define MAX_PACKET 2000
+
+/* references: RFC 2516 */
+/* ETHER_TYPE fields for PPPoE */
+
+#define ETH_P_PPPOE_DISC 0x8863 /* discovery stage */
+#define ETH_P_PPPOE_SESS 0x8864
+
+/* ethernet broadcast address */
+#define MAC_BCAST_ADDR "\xff\xff\xff\xff\xff\xff"
+
+/* Format for parsing long device-name */
+#define _STR(x) #x
+#define FMTSTRING(size) "%x:%x:%x:%x:%x:%x/%x/%" _STR(size) "s"
+
+/* maximum payload length */
+#define MAX_PAYLOAD 1484
+
+
+
+/* PPPoE tag types */
+#define MAX_TAGS 11
+
+
+/* PPPoE packet; includes Ethernet headers and such */
+struct pppoe_packet{
+ struct sockaddr_ll addr;
+ struct pppoe_tag *tags[MAX_TAGS];
+ struct pppoe_hdr *hdr;
+ char buf[MAX_PAYLOAD]; /* buffer in which tags are held */
+};
+/* Defines meaning of each "tags" element */
+
+#define TAG_SRV_NAME 0
+#define TAG_AC_NAME 1
+#define TAG_HOST_UNIQ 2
+#define TAG_AC_COOKIE 3
+#define TAG_VENDOR 4
+#define TAG_RELAY_SID 5
+#define TAG_SRV_ERR 6
+#define TAG_SYS_ERR 7
+#define TAG_GEN_ERR 8
+#define TAG_EOL 9
+
+static int tag_map[] = { PTT_SRV_NAME,
+ PTT_AC_NAME,
+ PTT_HOST_UNIQ,
+ PTT_AC_COOKIE,
+ PTT_VENDOR,
+ PTT_RELAY_SID,
+ PTT_SRV_ERR,
+ PTT_SYS_ERR,
+ PTT_GEN_ERR,
+ PTT_EOL
+};
+
+
+/* Debug flags */
+int DEB_DISC,DEB_DISC2;
+/*
+ #define DEB_DISC (opt_debug & 0x0002)
+ #define DEB_DISC2 (opt_debug & 0x0004)
+*/
+#define MAX_FNAME 256
+
+
+struct session;
+
+/* return <0 --> fatal error; abor
+ return =0 --> ok, proceed
+ return >0 --> ok, qui
+*/
+typedef int (*packet_cb_t)(struct session* ses,
+ struct pppoe_packet *p_in,
+ struct pppoe_packet **p_out);
+
+/* various override filter tags */
+struct filter {
+ struct pppoe_tag *stag; /* service name tag override */
+ struct pppoe_tag *ntag; /*AC name override */
+ struct pppoe_tag *htag; /* hostuniq override */
+ int num_restart;
+ int peermode;
+ char *fname;
+ char *pppd;
+} __attribute__ ((packed));
+
+
+struct pppoe_tag *make_filter_tag(short type, short length, char* data);
+
+/* Session type definitions */
+#define SESSION_CLIENT 0
+#define SESSION_SERVER 1
+#define SESSION_RELAY 2
+
+struct session {
+
+ /* Administrative */
+ int type;
+ int opt_debug;
+ int detached;
+ int np;
+ int log_to_fd;
+ int ifindex; /* index of device */
+ char name[IFNAMSIZ]; /*dev name */
+ struct pppoe_packet curr_pkt;
+
+ packet_cb_t init_disc;
+ packet_cb_t rcv_pado;
+ packet_cb_t rcv_padi;
+ packet_cb_t rcv_pads;
+ packet_cb_t rcv_padr;
+ packet_cb_t rcv_padt;
+ packet_cb_t timeout;
+
+
+ /* Generic */
+ struct filter *filt;
+ struct sockaddr_ll local;
+ struct sockaddr_ll remote;
+ struct sockaddr_pppox sp;
+ int fd; /* fd of PPPoE socket */
+
+
+ /* For client */
+ int retransmits; /* Number of retransmission performed
+ if < 0 , retransmissions disabled */
+ int retries;
+ int state;
+ int opt_daemonize;
+
+ /* For server */
+ int fork;
+
+ /* For forwarding */
+ int fwd_sock;
+ char fwd_name[IFNAMSIZ]; /* Name of device to forward to */
+} __attribute__ ((packed));
+
+/*
+ retransmit retries for the PADR and PADI packets
+ during discovery
+*/
+int PADR_ret;
+int PADI_ret;
+
+int log_to_fd;
+int ctrl_fd;
+int opt_debug;
+int opt_daemonize;
+
+
+/* Structure for keeping track of connection relays */
+struct pppoe_con{
+ struct pppoe_con *next;
+ int id;
+ int connected;
+ int cl_sock;
+ int sv_sock;
+ int ref_count;
+ char client[ETH_ALEN];
+ char server[ETH_ALEN];
+ char key_len;
+ char key[32];
+};
+
+/* Functions exported from utils.c. */
+
+/* Functions exported from pppoehash.c */
+struct pppoe_con *get_con(int len, char *key);
+int store_con(struct pppoe_con *pc);
+struct pppoe_con *delete_con(unsigned long len, char *key);
+
+/* exported by lib.c */
+
+extern int init_lib();
+
+extern int get_sockaddr_ll(const char *devnam,struct sockaddr_ll* sll);
+
+extern int client_init_ses (struct session *ses, char* devnam);
+extern int relay_init_ses(struct session *ses, char* from, char* to);
+extern int srv_init_ses(struct session *ses, char* from);
+extern int session_connect(struct session *ses);
+extern int session_disconnect(struct session*ses);
+
+extern int verify_packet( struct session *ses, struct pppoe_packet *p);
+
+extern void copy_tag(struct pppoe_packet *dest, struct pppoe_tag *pt);
+extern struct pppoe_tag *get_tag(struct pppoe_hdr *ph, u_int16_t idx);
+extern int send_disc(struct session *ses, struct pppoe_packet *p);
+
+
+extern int add_client(char *addr);
+
+/* Make connections (including spawning pppd) as server/client */
+extern ppp_connect(struct session *ses);
+
+
+#endif
--- /dev/null
+/* PPPoE support library "libpppoe"
+ *
+ * Copyright 2000 Michal Ostrowski <mostrows@styx.uwaterloo.ca>,
+ * Jamal Hadi Salim <hadi@cyberus.ca>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
+ */
+
+#include "pppoe.h"
+
+
+
+static int std_rcv_pado(struct session* ses,
+ struct pppoe_packet *p_in,
+ struct pppoe_packet **p_out){
+
+ if( verify_packet(ses, p_in) < 0)
+ return -1;
+
+ if(ses->state != PADO_CODE ){
+ poe_error(ses,"Unexpected packet: %P",p_in);
+ return 0;
+ }
+
+
+ if (DEB_DISC2) {
+ poe_dbglog (ses,"PADO received: %P", p_in);
+ }
+
+ memcpy(&ses->remote, &p_in->addr, sizeof(struct sockaddr_ll));
+ memcpy( &ses->curr_pkt.addr, &ses->remote , sizeof(struct sockaddr_ll));
+
+ ses->curr_pkt.hdr->code = PADR_CODE;
+
+ /* The HOST_UNIQ has been verified already... there's no "if" about this */
+ /* if(ses->filt->htag) */
+ copy_tag(&ses->curr_pkt,get_tag(p_in->hdr,PTT_HOST_UNIQ));
+
+ if (ses->filt->ntag) {
+ ses->curr_pkt.tags[TAG_AC_NAME]=NULL;
+ }
+// copy_tag(&ses->curr_pkt,get_tag(p_in->hdr,PTT_AC_NAME));
+
+ if(ses->filt->stag) {
+ ses->curr_pkt.tags[TAG_SRV_NAME]=NULL;
+ }
+ copy_tag(&ses->curr_pkt,get_tag(p_in->hdr,PTT_SRV_NAME));
+
+ copy_tag(&ses->curr_pkt,get_tag(p_in->hdr,PTT_AC_COOKIE));
+ copy_tag(&ses->curr_pkt,get_tag(p_in->hdr,PTT_RELAY_SID));
+
+ ses->state = PADS_CODE;
+
+ ses->retransmits = 0;
+
+ send_disc(ses, &ses->curr_pkt);
+ (*p_out) = &ses->curr_pkt;
+
+ if (ses->np)
+ return 1;
+
+ return 0;
+}
+
+static int std_init_disc(struct session* ses,
+ struct pppoe_packet *p_in,
+ struct pppoe_packet **p_out){
+
+ memset(&ses->curr_pkt,0, sizeof(struct pppoe_packet));
+
+
+ /* Check if already connected */
+ if( ses->state != PADO_CODE ){
+ return 1;
+ }
+
+ ses->curr_pkt.hdr = (struct pppoe_hdr*) ses->curr_pkt.buf;
+ ses->curr_pkt.hdr->ver = 1;
+ ses->curr_pkt.hdr->type = 1;
+ ses->curr_pkt.hdr->code = PADI_CODE;
+
+
+ memcpy( &ses->curr_pkt.addr, &ses->remote , sizeof(struct sockaddr_ll));
+
+ poe_info (ses,"Sending PADI");
+ if (DEB_DISC)
+ poe_dbglog (ses,"Sending PADI");
+
+ ses->retransmits = 0 ;
+
+ if(ses->filt->ntag) {
+ ses->curr_pkt.tags[TAG_AC_NAME]=ses->filt->ntag;
+ poe_info(ses,"overriding AC name\n");
+ }
+
+ if(ses->filt->stag)
+ ses->curr_pkt.tags[TAG_SRV_NAME]=ses->filt->stag;
+
+ if(ses->filt->htag)
+ ses->curr_pkt.tags[TAG_HOST_UNIQ]=ses->filt->htag;
+
+ send_disc(ses, &ses->curr_pkt);
+ (*p_out)= &ses->curr_pkt;
+ return 0;
+}
+
+
+static int std_rcv_pads(struct session* ses,
+ struct pppoe_packet *p_in,
+ struct pppoe_packet **p_out){
+ if( verify_packet(ses, p_in) < 0)
+ return -1;
+
+ if (DEB_DISC)
+ poe_dbglog (ses,"Got connection: %x",
+ ntohs(p_in->hdr->sid));
+ poe_info (ses,"Got connection: %x", ntohs(p_in->hdr->sid));
+
+ ses->sp.sa_family = AF_PPPOX;
+ ses->sp.sa_protocol = PX_PROTO_OE;
+ ses->sp.sa_addr.pppoe.sid = p_in->hdr->sid;
+ memcpy(ses->sp.sa_addr.pppoe.dev,ses->name, IFNAMSIZ);
+ memcpy(ses->sp.sa_addr.pppoe.remote, p_in->addr.sll_addr, ETH_ALEN);
+
+
+ return 1;
+}
+
+static int std_rcv_padt(struct session* ses,
+ struct pppoe_packet *p_in,
+ struct pppoe_packet **p_out){
+ ses->state = PADO_CODE;
+ return 0;
+}
+
+
+extern int disc_sock;
+int client_init_ses (struct session *ses, char* devnam)
+{
+ int i=0;
+ int retval;
+ char dev[IFNAMSIZ+1];
+ int addr[ETH_ALEN];
+ int sid;
+
+ /* do error checks here; session name etc are valid */
+// poe_info (ses,"init_ses: creating socket");
+
+ /* Make socket if necessary */
+ if( disc_sock < 0 ){
+
+ disc_sock = socket(PF_PACKET, SOCK_DGRAM, 0);
+ if( disc_sock < 0 ){
+ poe_fatal(ses,
+ "Cannot create PF_PACKET socket for PPPoE discovery\n");
+ }
+
+ }
+
+ /* Check for long format */
+ retval =sscanf(devnam, FMTSTRING(IFNAMSIZ),addr, addr+1, addr+2,
+ addr+3, addr+4, addr+5,&sid,dev);
+ if( retval != 8 ){
+ /* Verify the device name , construct ses->local */
+ retval = get_sockaddr_ll(devnam,&ses->local);
+ if (retval < 0)
+ poe_fatal(ses, "client_init_ses: "
+ "Cannot create PF_PACKET socket for PPPoE discovery\n");
+
+
+ ses->state = PADO_CODE;
+ memcpy(&ses->remote, &ses->local, sizeof(struct sockaddr_ll) );
+
+ memset( ses->remote.sll_addr, 0xff, ETH_ALEN);
+ }else{
+ /* long form parsed */
+
+ /* Verify the device name , construct ses->local */
+ retval = get_sockaddr_ll(dev,&ses->local);
+ if (retval < 0)
+ poe_fatal(ses,"client_init_ses(2): "
+ "Cannot create PF_PACKET socket for PPPoE discovery\n");
+ ses->state = PADS_CODE;
+ ses->sp.sa_family = AF_PPPOX;
+ ses->sp.sa_protocol = PX_PROTO_OE;
+ ses->sp.sa_addr.pppoe.sid = sid;
+
+ memcpy(&ses->remote, &ses->local, sizeof(struct sockaddr_ll) );
+
+ for(; i < ETH_ALEN ; ++i ){
+ ses->sp.sa_addr.pppoe.remote[i] = addr[i];
+ ses->remote.sll_addr[i]=addr[i];
+ }
+ memcpy(ses->sp.sa_addr.pppoe.dev, dev, IFNAMSIZ);
+
+
+
+ }
+ if( retval < 0 )
+ error("bad device name: %s",devnam);
+
+
+ retval = bind( disc_sock ,
+ (struct sockaddr*)&ses->local,
+ sizeof(struct sockaddr_ll));
+
+
+ if( retval < 0 ){
+ error("bind to PF_PACKET socket failed: %m");
+ }
+
+ ses->fd = socket(AF_PPPOX,SOCK_STREAM,PX_PROTO_OE);
+ if(ses->fd < 0)
+ {
+ poe_fatal(ses,"Failed to create PPPoE socket: %m");
+ }
+
+
+ ses->init_disc = std_init_disc;
+ ses->rcv_pado = std_rcv_pado;
+ ses->rcv_pads = std_rcv_pads;
+ ses->rcv_padt = std_rcv_padt;
+
+ /* this should be filter overridable */
+ ses->retries = 10;
+
+ return ses->fd;
+}
+
--- /dev/null
+/* PPPoE support library "libpppoe"
+ *
+ * Copyright 2000 Michal Ostrowski <mostrows@styx.uwaterloo.ca>,
+ * Jamal Hadi Salim <hadi@cyberus.ca>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
+ */
+
+#include "pppoe.h"
+
+static int relay_init_disc(struct session* ses,
+ struct pppoe_packet *p_in,
+ struct pppoe_packet **p_out){
+
+ ses->state = 0;
+ ses->retransmits = -1 ;
+ ses->retries = -1;
+
+ (*p_out) = NULL;
+ return 0;
+}
+
+static int pcid=0;
+static int relay_rcv_padi(struct session* ses,
+ struct pppoe_packet *p_in,
+ struct pppoe_packet **p_out){
+ char tag_buf[32];
+ struct pppoe_con *newpc = NULL;
+ struct pppoe_tag *tag = (struct pppoe_tag *) tag_buf;
+
+
+ tag->tag_type = PTT_RELAY_SID;
+ tag->tag_len = htons(ETH_ALEN + sizeof(struct session *));
+
+ memcpy(tag->tag_data, p_in->addr.sll_addr, ETH_ALEN);
+ memcpy(tag->tag_data + ETH_ALEN, &ses, sizeof(struct session *));
+
+ if(! p_in->tags[TAG_RELAY_SID] ){
+ copy_tag(p_in, tag);
+ }
+
+
+ poe_dbglog(ses, "Recv'd PADI: %P",p_in);
+ poe_dbglog(ses, "Recv'd packet: %P",p_in);
+ newpc = get_con( ntohs(tag->tag_len), tag->tag_data );
+ if(!newpc){
+
+ newpc = (struct pppoe_con *) malloc(sizeof(struct pppoe_con));
+ memset(newpc , 0, sizeof(struct pppoe_con));
+
+ newpc->id = pcid++;
+
+ newpc->key_len = ntohs(p_in->tags[TAG_RELAY_SID]->tag_len);
+ memcpy(newpc->key, p_in->tags[TAG_RELAY_SID]->tag_data, newpc->key_len);
+ memcpy(newpc->client, p_in->addr.sll_addr, ETH_ALEN);
+
+ memcpy(newpc->server, MAC_BCAST_ADDR, ETH_ALEN);
+
+ store_con(newpc);
+
+ }
+
+ ++newpc->ref_count;
+
+ memset(p_in->addr.sll_addr, 0xff, ETH_ALEN);
+
+ p_in->addr.sll_ifindex = ses->remote.sll_ifindex;
+
+ send_disc(ses, p_in);
+ return 0;
+}
+
+static int relay_rcv_pkt(struct session* ses,
+ struct pppoe_packet *p_in,
+ struct pppoe_packet **p_out){
+ struct pppoe_con *pc;
+ char tag_buf[32];
+ struct pppoe_tag *tag = p_in->tags[TAG_RELAY_SID];
+
+ if( !tag ) return 0;
+
+ pc = get_con(ntohs(tag->tag_len),tag->tag_data);
+
+ if( !pc ) return 0;
+
+ poe_dbglog(ses, "Recv'd packet: %P",p_in);
+
+ if( memcmp(pc->client , p_in->addr.sll_addr , ETH_ALEN ) == 0 ){
+
+ memcpy(p_in->addr.sll_addr, pc->server, ETH_ALEN);
+ p_in->addr.sll_ifindex = ses->remote.sll_ifindex;
+
+ }else{
+ if( memcmp(pc->server, MAC_BCAST_ADDR, ETH_ALEN) == 0 ){
+ memcpy(pc->server, p_in->addr.sll_addr, ETH_ALEN);
+
+ }else if( memcmp(pc->server, p_in->addr.sll_addr, ETH_ALEN) !=0){
+ return 0;
+ }
+
+ memcpy(p_in->addr.sll_addr, pc->client, ETH_ALEN);
+ p_in->addr.sll_ifindex = ses->local.sll_ifindex;
+
+
+ }
+
+
+ send_disc(ses, p_in);
+ return 0;
+}
+
+static int relay_rcv_pads(struct session* ses,
+ struct pppoe_packet *p_in,
+ struct pppoe_packet **p_out){
+
+ struct pppoe_con *pc;
+ char tag_buf[32];
+ struct pppoe_tag *tag = p_in->tags[TAG_RELAY_SID];
+ struct sockaddr_pppox sp_cl= { AF_PPPOX, PX_PROTO_OE,
+ { p_in->hdr->sid, {0,},{0,}}};
+
+ struct sockaddr_pppox sp_sv= { AF_PPPOX, PX_PROTO_OE,
+ { p_in->hdr->sid, {0,},{0,}}};
+
+ int ret;
+
+
+ if( !tag ) return 0;
+
+ pc = get_con(ntohs(tag->tag_len),tag->tag_data);
+
+ if( !pc ) return 0;
+
+
+ if(!pc->connected){
+
+ pc->sv_sock = socket( AF_PPPOX, SOCK_DGRAM, PX_PROTO_OE);
+ if( pc->sv_sock < 0){
+ poe_fatal(ses,"Cannot open PPPoE socket: %i",errno);
+ }
+
+ pc->cl_sock = socket( AF_PPPOX, SOCK_DGRAM, PX_PROTO_OE);
+ if( pc->cl_sock < 0){
+ poe_fatal(ses,"Cannot open PPPoE socket: %i",errno);
+ }
+
+ memcpy( sp_sv.sa_addr.pppoe.dev, ses->fwd_name, IFNAMSIZ);
+ memcpy( sp_sv.sa_addr.pppoe.remote, pc->server, ETH_ALEN);
+
+ ret = connect( pc->sv_sock,
+ (struct sockaddr*)&sp_sv,
+ sizeof(struct sockaddr_pppox));
+ if( ret < 0){
+ poe_fatal(ses,"Cannot connect PPPoE socket: %i",errno);
+ }
+
+ memcpy( sp_cl.sa_addr.pppoe.dev, ses->name, IFNAMSIZ);
+ memcpy( sp_cl.sa_addr.pppoe.remote, pc->client, ETH_ALEN);
+
+ ret = connect( pc->cl_sock,
+ (struct sockaddr*)&sp_cl,
+ sizeof(struct sockaddr_pppox));
+ if( ret < 0){
+ poe_fatal(ses,"Cannot connect PPPoE socket: %i",errno);
+ }
+
+
+ ret = ioctl( pc->sv_sock, PPPOEIOCSFWD, &sp_cl);
+ if( ret < 0){
+ poe_fatal(ses,"Cannot set forwarding on PPPoE socket: %i",errno);
+ }
+
+ ret = ioctl( pc->cl_sock, PPPOEIOCSFWD, &sp_sv);
+ if( ret < 0){
+ poe_fatal(ses,"Cannot set forwarding on PPPoE socket: %i",errno);
+ }
+
+ pc->connected = 1;
+ }
+
+ poe_info(ses,"PPPoE relay for %E established to %E (sid=%04x)\n",
+ pc->client,pc->server, p_in->hdr->sid);
+
+ return relay_rcv_pkt(ses,p_in,p_out);
+}
+
+
+static int relay_rcv_padt(struct session* ses,
+ struct pppoe_packet *p_in,
+ struct pppoe_packet **p_out){
+
+ int ret;
+ struct pppoe_con *pc;
+ char tag_buf[32];
+ struct pppoe_tag *tag = p_in->tags[TAG_RELAY_SID];
+
+ if( !tag ) return 0;
+
+ pc = get_con(ntohs(tag->tag_len),tag->tag_data);
+
+ if( !pc ) return 0;
+
+ ret = relay_rcv_pkt(ses,p_in,p_out);
+
+
+ if(pc->cl_sock>0){
+ close(pc->cl_sock);
+ }
+
+ if(pc->sv_sock>0){
+ close(pc->sv_sock);
+ }
+
+ --pc->ref_count;
+ if( pc->ref_count == 0 ){
+ delete_con(pc->key_len, pc->key);
+
+ free(pc);
+ }
+}
+
+
+int relay_init_ses(struct session *ses, char* from, char* to)
+{
+ int retval = client_init_ses(ses, from);
+
+ if(retval<0) return retval;
+
+ ses->fwd_sock = socket(PF_PACKET, SOCK_DGRAM, 0);
+ if( ses->fwd_sock < 0 ) {
+ poe_fatal(ses,"Cannot create PF_PACKET socket for PPPoE forwarding\n");
+ }
+
+ /* Verify the device name , construct ses->local */
+ retval = get_sockaddr_ll(to, &ses->remote);
+ if (retval < 0)
+ poe_fatal(ses,"relay_init_ses:get_sockaddr_ll failed %m");
+
+ retval = bind( ses->fwd_sock ,
+ (struct sockaddr*)&ses->remote,
+ sizeof(struct sockaddr_ll));
+
+ if( retval < 0 ){
+ poe_fatal(ses,"bind to PF_PACKET socket failed: %m");
+ }
+
+ memcpy(ses->fwd_name, to, IFNAMSIZ);
+ memcpy(ses->name, from, IFNAMSIZ);
+
+
+ ses->init_disc = relay_init_disc;
+ ses->rcv_padi = relay_rcv_padi;
+ ses->rcv_pado = relay_rcv_pkt;
+ ses->rcv_padr = relay_rcv_pkt;
+ ses->rcv_pads = relay_rcv_pads;
+ ses->rcv_padt = relay_rcv_padt;
+}
--- /dev/null
+/* PPPoE support library "libpppoe"
+ *
+ * Copyright 2000 Michal Ostrowski <mostrows@styx.uwaterloo.ca>,
+ * Jamal Hadi Salim <hadi@cyberus.ca>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
+ */
+#include "pppoe.h"
+#include <unistd.h>
+
+static unsigned int pcid=1111;
+static int srv_rcv_padi(struct session* ses,
+ struct pppoe_packet *p_in,
+ struct pppoe_packet **p_out){
+ struct pppoe_con *newpc = NULL;
+ struct pppoe_tag *tag;
+
+ poe_dbglog(ses,"Srv Recv'd packet: %P\n",p_in);
+
+
+ ses->curr_pkt.hdr = (struct pppoe_hdr*) ses->curr_pkt.buf;
+ ses->curr_pkt.hdr->ver = 1;
+ ses->curr_pkt.hdr->type = 1;
+
+ tag = get_tag(p_in->hdr,PTT_SRV_NAME);
+
+ if(!tag )
+ return 0;
+
+ if( ntohs(tag->tag_len)==0 ){
+ ses->curr_pkt.tags[TAG_SRV_NAME] = ses->filt->stag ;
+ }else if( tag->tag_len != ses->filt->stag->tag_len
+ || !memcmp( tag+1, ses->filt->stag, ntohs(tag->tag_len)) ){
+ return 0;
+ }else{
+ ses->curr_pkt.tags[TAG_SRV_NAME] = tag;
+ }
+
+ ses->curr_pkt.tags[ TAG_AC_NAME] = ses->filt->ntag ;
+ ses->curr_pkt.tags[ TAG_HOST_UNIQ ] = get_tag(p_in->hdr,PTT_HOST_UNIQ);
+
+ memcpy(&ses->remote, &p_in->addr, sizeof(struct sockaddr_ll));
+ memcpy( &ses->curr_pkt.addr, &ses->remote , sizeof(struct sockaddr_ll));
+
+ ses->curr_pkt.hdr->code = PADO_CODE;
+
+
+ ses->curr_pkt.tags[ TAG_RELAY_SID ] = get_tag(p_in->hdr,PTT_RELAY_SID);
+
+ send_disc(ses, &ses->curr_pkt);
+ poe_dbglog(ses,"Srv Sent packet: %P\n",&ses->curr_pkt);
+
+ return 0;
+}
+
+
+static int srv_rcv_padr(struct session* ses,
+ struct pppoe_packet *p_in,
+ struct pppoe_packet **p_out){
+ struct pppoe_tag *tag;
+
+ poe_dbglog(ses,"Recv'd packet: %P\n",p_in);
+
+
+
+ /* Run checks to ensure this packets asks for
+ what we're willing to offer */
+
+ tag = get_tag(p_in->hdr,PTT_SRV_NAME);
+
+ if(!tag || tag->tag_len == 0 ){
+ p_in->tags[TAG_SRV_NAME] = ses->filt->stag;
+
+ }else if( tag->tag_len != ses->filt->stag->tag_len
+ || !memcmp(tag + 1 , ses->filt->stag, ntohs(tag->tag_len)) ){
+ return 0;
+ }else{
+ p_in->tags[TAG_SRV_NAME] = tag;
+ }
+
+ tag = get_tag(p_in->hdr,PTT_AC_NAME);
+ if( !tag || tag->tag_len==0 ){
+ p_in->tags[TAG_AC_NAME] = ses->filt->ntag;
+ }else if( tag->tag_len != ses->filt->ntag->tag_len
+ || !memcmp(tag + 1, ses->filt->ntag, ntohs(tag->tag_len)) ){
+ return 0;
+ }else{
+ p_in->tags[TAG_AC_NAME] = tag;
+ }
+
+
+
+
+ pcid = ++pcid & 0x0000ffff ;
+ if(pcid == 0 ){
+ pcid = 1111;
+ }
+
+ p_in->hdr->sid = ntohs(pcid);
+
+ p_in->hdr->code = PADS_CODE;
+ send_disc(ses, p_in);
+
+ poe_dbglog(ses,"Sent packet: %P\n",p_in);
+
+ ses->sp.sa_family = AF_PPPOX;
+ ses->sp.sa_protocol=PX_PROTO_OE;
+ ses->sp.sa_addr.pppoe.sid = p_in->hdr->sid;
+ memcpy(ses->sp.sa_addr.pppoe.dev, ses->name, IFNAMSIZ);
+ memcpy(ses->sp.sa_addr.pppoe.remote, p_in->addr.sll_addr, ETH_ALEN);
+ memcpy(&ses->remote, &p_in->addr, sizeof(struct sockaddr_ll));
+ return 1;
+}
+
+static int srv_rcv_padt(struct session* ses,
+ struct pppoe_packet *p_in,
+ struct pppoe_packet **p_out){
+ return 0;
+}
+
+
+
+int srv_init_ses(struct session *ses, char* from)
+{
+ int retval;
+ retval = client_init_ses(ses, from);
+ ses->init_disc = NULL;
+ ses->rcv_pado = NULL;
+ ses->rcv_pads = NULL;
+ ses->rcv_padi = srv_rcv_padi;
+ ses->rcv_padr = srv_rcv_padr;
+ ses->rcv_padt = srv_rcv_padt;
+
+ /* retries forever */
+ ses->retries = -1;
+
+ return retval;
+}
+
+
--- /dev/null
+/* PPPoE support library "libpppoe"
+ *
+ * Copyright 2000 Jamal Hadi Salim <hadi@cyberus.ca>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
+ */
+
+#include "pppoe.h"
+
+int detached=1;
+void
+sigproc (int src)
+{
+ int i;
+ fprintf (stderr,"Received signal %d", src);
+}
+
+void
+sigchild (int src)
+{
+ pid_t pid;
+ int status;
+ int i;
+ pid = waitpid (-1, &status, WNOHANG);
+
+ if (!detached)
+ fprintf (stderr,"Child received signal %d PID %d, status %d", src, pid, status);
+ if (pid < 1) {
+ return;
+ }
+}
+
+void
+print_help ()
+{
+
+ fprintf (stdout,"\npppoe version %d.%d build %d", VERSION_MAJOR, VERSION_MINOR,
+ VERSION_DATE);
+ fprintf (stdout,"\nrecognized options are:");
+ fprintf (stdout,"\n -I <interface> : overrides the default interface of eth0");
+ fprintf (stdout,"\n -S : starts pppoed in server mode");
+ fprintf (stdout,"\n -R <num_retries>: forces pppoed to be restarted num_retries");
+ fprintf (stdout,"\n should the other end be detected to be dead.");
+ fprintf (stdout,"\n Needs lcp_echo. Read the INSTALL file instructions");
+ fprintf (stdout,"\n -F <filename> : specifies additional ppp options file");
+ fprintf (stdout,"\n -C <filename> : ppp options file in /etc/ppp/peers/");
+ fprintf (stdout,"\n -d <level> : sets debug level");
+ fprintf (stdout,"\n -D : prevents pppoed from detaching itself and running in the background");
+ fprintf (stdout,"\n -P <path to pppd> : selects a different pppd. Defaults to " _PATH_PPPD);
+ fprintf (stdout,"\n -A <AC name> to select a specific AC by name");
+ fprintf (stdout,"\n -E <AC service name> to select a specific AC service by name");
+ fprintf (stdout,"\n -G Do service discovery only");
+ fprintf (stdout,"\n -H Do service discovery and connection (no pppd)\n");
+}
+
+
+int
+get_args (int argc, char **argv,struct session *sess)
+{
+ struct filter *filt;
+ struct host_tag *tg;
+ int opt;
+
+
+ sess->opt_debug = 0;
+ DEB_DISC=0;
+ DEB_DISC2=0;
+ sess->log_to_fd = 1;
+ sess->np = 0;
+ sess->opt_daemonize = 0;
+
+ sess->log_to_fd = fileno (stdout);
+
+/* defaults to eth0 */
+ strcpy (sess->name, "eth0");
+
+
+ if ((sess->filt=malloc(sizeof(struct filter))) == NULL) {
+ poe_error (sess,"failed to malloc for Filter ");
+ poe_die (-1);
+ }
+
+ filt=sess->filt; /* makes the code more readable */
+ memset(filt,0,sizeof(struct filter));
+
+ filt->num_restart=1;
+
+/* set default filters; move this to routine */
+ /* parse options */
+
+ while ((opt = getopt (argc, argv, "A:C:E:d:DR:I:F:L:V:P:SN:GH")) != -1)
+
+ switch (opt) {
+ case 'R': /* sets number of retries */
+ filt->num_restart = strtol (optarg, (char **) NULL, 10);
+ filt->num_restart += 1;
+ break;
+ case 'I': /* sets interface */
+ if (strlen (optarg) >= IFNAMSIZ) {
+ poe_error (sess,"interface name cannot exceed %d characters", IFNAMSIZ - 1);
+ return (-1);
+ }
+ strncpy (sess->name, optarg, strlen(optarg)+1);
+ break;
+ case 'C': /* name of the file in /etc/ppp/peers */
+ if (NULL != filt->fname) {
+ poe_error (sess,"-F can not be used with -C");
+ return (-1);
+ }
+ if (strlen(optarg) > MAX_FNAME) {
+ poe_error (sess,"file name cannot exceed %d characters", MAX_FNAME - 1);
+ return (-1);
+ }
+ filt->fname=malloc(strlen(optarg));
+ strncpy (filt->fname, optarg, strlen(optarg));
+ filt->peermode=1;
+ break;
+ case 'F': /* sets the options file */
+ if (NULL != filt->fname) {
+ poe_error (sess,"-F can not be used with -C");
+ return (-1);
+ }
+
+ if (strlen(optarg) > MAX_FNAME) {
+ poe_error (sess,"file name cannot exceed %d characters", MAX_FNAME - 1);
+ return (-1);
+ }
+ filt->fname=malloc(strlen(optarg)+1);
+ strncpy (filt->fname, optarg, strlen(optarg)+1);
+
+ poe_info (sess,"selected %s as filename\n",filt->fname);
+ break;
+ case 'D': /* don't daemonize */
+ sess->opt_daemonize = 1;
+ detached=0;
+ break;
+ case 'd': /* debug level */
+ sess->opt_debug = strtol (optarg, (char **) NULL, 10);
+ if (sess->opt_debug & 0x0002)
+ DEB_DISC=1;
+ if (sess->opt_debug & 0x0004)
+ DEB_DISC2=1;
+ break;
+ case 'P': /* sets the pppd binary */
+ if (strlen(optarg) > MAX_FNAME) {
+ poe_error (sess,"pppd binary cant exceed %d characters", MAX_FNAME - 1);
+ return (-1);
+ }
+ filt->pppd=malloc(strlen(optarg));
+ strncpy (filt->pppd, optarg, strlen(optarg));
+ break;
+ case 'H':
+ sess->np = 2;
+ break;
+ case 'G':
+ sess->np = 1;
+ break;
+ case 'V': /* version */
+ fprintf (stdout,"pppoe version %d.%d build %d", VERSION_MAJOR,
+ VERSION_MINOR, VERSION_DATE);
+ return (0);
+ case 'S': /* server mode */
+ sess->type = SESSION_SERVER;
+ break;
+ case 'A': /* AC override */
+ poe_info (sess,"AC name override to %s", optarg);
+ if (strlen (optarg) > 255) {
+ poe_error (sess," AC name too long
+ (maximum allowed 256 chars)");
+ poe_die(-1);
+ }
+ if ((sess->filt->ntag= malloc (sizeof (struct pppoe_tag) +
+ strlen (optarg)))== NULL) {
+ poe_error (sess,"failed to malloc for AC name");
+ poe_die(-1);
+ }
+ sess->filt->ntag->tag_len=htons(strlen(optarg));
+ sess->filt->ntag->tag_type=PTT_AC_NAME;
+ poe_error (sess," pppoe_ac_name: AC name Override %p\n",
+ sess->filt->ntag);
+ strcpy(sess->filt->ntag->tag_data,optarg);
+ break;
+ case 'E': /* AC service name override */
+ poe_info (sess,"AC service name override to %s", optarg);
+ if (strlen (optarg) > 255) {
+ poe_error (sess," Service name too long
+ (maximum allowed 256 chars)");
+ poe_die(-1);
+ }
+
+ if ((filt->stag = malloc (strlen (optarg) + sizeof (struct pppoe_tag))) == NULL) {
+ poe_error (sess,"failed to malloc for service name: %m");
+ return (-1);
+ }
+
+ filt->stag->tag_len = htons (strlen (optarg));
+ filt->stag->tag_type = PTT_SRV_NAME;
+ strcpy ((char *) (filt->stag->tag_data), optarg);
+ break;
+ default:
+ poe_error (sess,"Unknown option '%c'", optopt);
+ print_help ();
+ return (-1);
+ }
+
+
+ return (1);
+
+}
+
+
+int main(int argc, char** argv){
+ int ret;
+ struct filter *filt;
+ struct session *ses = (struct session *)malloc(sizeof(struct session));
+ char buf[256];
+ ses=(void *)malloc(sizeof(struct session));
+
+ if(!ses){
+ return -1;
+ }
+ memset(ses,0,sizeof(struct session));
+
+
+
+ openlog ("pppoed", LOG_PID | LOG_NDELAY, LOG_PPPOE);
+ setlogmask (LOG_UPTO (ses->opt_debug ? LOG_DEBUG : LOG_INFO));
+
+
+ if ((get_args (argc,(char **) argv,ses)) <1)
+ poe_die(-1);
+
+ filt=ses->filt; /* makes the code more readable */
+
+ if (!ses->np) {
+ poe_create_pidfile (ses);
+// signal (SIGINT, &sigproc);
+// signal (SIGTERM, &sigproc);
+ signal (SIGCHLD, &sigchild);
+ }
+
+ if(ses->type == SESSION_CLIENT){
+
+ poe_info(ses,"calling client_init_ses\n");
+ ret = client_init_ses(ses,ses->name);
+
+ if( ret < 0 ){
+ return -1;
+ }
+
+ while (ses->filt->num_restart > 0)
+ {
+ poe_info(ses,"Restart number %d ",ses->filt->num_restart);
+ ppp_connect (ses);
+ ses->filt->num_restart--;
+ }
+
+ }else if( ses->type == SESSION_SERVER ){
+
+ poe_info(ses,"calling srv_init_ses\n");
+ ret = srv_init_ses(ses,ses->name);
+
+ if( ret < 0 ){
+ return -1;
+ }
+
+ ret = 1;
+ while(ret>=0)
+ ret = ppp_connect(ses);
+
+ }
+
+
+
+
+ poe_info(ses,"ppp_connect came back! %d",ret);
+
+ exit(0);
+
+}
--- /dev/null
+#include "pppoe.h"
+
+void fatal (char *fmt, ...)
+{
+ va_list pvar;
+
+#if defined(__STDC__)
+ va_start(pvar, fmt);
+#else
+ char *fmt;
+ va_start(pvar);
+ fmt = va_arg(pvar, char *);
+#endif
+
+ vprintf( fmt, pvar);
+ va_end(pvar);
+
+ exit(1); /* as promised */
+}
+
+void info (char *fmt, ...)
+{
+ va_list pvar;
+
+#if defined(__STDC__)
+ va_start(pvar, fmt);
+#else
+ char *fmt;
+ va_start(pvar);
+ fmt = va_arg(pvar, char *);
+#endif
+
+ vprintf( fmt, pvar);
+ va_end(pvar);
+
+}
+
+
+int main(int argc, char** argv){
+ int ret;
+ struct session *ses = (struct session *)malloc(sizeof(struct session));
+
+ if(!ses) return -1;
+
+ ret = relay_init_ses(ses,argv[1],argv[2]);
+
+ if( ret < 0 ){
+ return -1;
+ }
+
+ ses->log_to_fd = 1;
+ ses->opt_debug=1;
+ while(1)
+ ret = session_connect(ses);
+
+
+
+ return ret;
+
+
+}
--- /dev/null
+/* PPPoE support library "libpppoe"
+ *
+ * Copyright 2000 Michal Ostrowski <mostrows@styx.uwaterloo.ca>,
+ * Jamal Hadi Salim <hadi@cyberus.ca>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
+ */
+#include "pppoe.h"
+
+
+#define PPPOE_HASH_SIZE 16
+
+
+static inline int keycmp(char *a, char *b, int x, int y){
+ return x==y && !memcmp(a,b,x);
+}
+
+static int hash_con(int key_len, char* key)
+{
+ int i = 0;
+ char hash[sizeof(int)]={0,};
+
+ for (i = 0; i < key_len ; ++i)
+ hash[i% sizeof(int)] = hash[i%sizeof(int)] ^ key[i];
+
+ i = (*((int*)hash)) ;
+ i &= PPPOE_HASH_SIZE - 1;
+
+ return i;
+}
+
+static struct pppoe_con *con_ht[PPPOE_HASH_SIZE] = { 0, };
+
+struct pppoe_con *get_con(int len, char *key)
+{
+ int hash = hash_con(len, key);
+ struct pppoe_con *ret;
+
+ ret = con_ht[hash];
+
+ while (ret && !keycmp(ret->key,key, ret->key_len, len))
+ ret = ret->next;
+
+ return ret;
+}
+
+int store_con(struct pppoe_con *pc)
+{
+ int hash = hash_con(pc->key_len, pc->key);
+ struct pppoe_con *ret;
+
+ ret = con_ht[hash];
+ while (ret) {
+ if (!keycmp(ret->key, pc->key, ret->key_len, pc->key_len))
+ return -EALREADY;
+
+ ret = ret->next;
+ }
+
+ if (!ret) {
+ pc->next = con_ht[hash];
+ con_ht[hash] = pc;
+ }
+
+ return 0;
+}
+
+struct pppoe_con *delete_con(unsigned long len, char *key)
+{
+ int hash = hash_con(len, key);
+ struct pppoe_con *ret, **src;
+
+ ret = con_ht[hash];
+ src = &con_ht[hash];
+
+ while (ret) {
+ if (keycmp(ret->key,key, ret->key_len, len)) {
+ *src = ret->next;
+ break;
+ }
+
+ src = &ret->next;
+ ret = ret->next;
+ }
+
+ return ret;
+}
+
--- /dev/null
+
+/*
+ * utils.c - various utility functions used in pppoed.
+ *
+ * mostly stolen from ppp-2.3.10 by Marc Boucher <marc@mbsi.ca>
+ *
+ * Feb 18/2000 Made fully re-entrant (JHS)
+ *
+ * Copyright (c) 1999 The Australian National University.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms are permitted
+ * provided that the above copyright poe_notice and this paragraph are
+ * duplicated in all such forms and that any documentation,
+ * advertising materials, and other materials related to such
+ * distribution and use acknowledge that the software was developed
+ * by the Australian National University. The name of the University
+ * may not be used to endorse or promote products derived from this
+ * software without specific prior written permission.
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
+ * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
+ */
+
+#include <stdio.h> /* stdio */
+#include <stdlib.h> /* strtoul(), realloc() */
+#include <string.h> /* memcpy() */
+#include <unistd.h> /* STDIN_FILENO,exec */
+#include <errno.h> /* errno */
+
+#include <sys/time.h>
+
+#include <net/ethernet.h>
+#include <netinet/in.h>
+
+#include <stdarg.h>
+#include <ctype.h>
+#include <syslog.h>
+#include <limits.h>
+#include <paths.h>
+
+#include "pppoe.h"
+
+static char pidfilename[PATH_MAX]; /* name of pid file */
+
+/*
+static int detached = 0;
+ log_to_fd = -1;
+ */
+
+static void vslp_printer (void *, char *,...);
+static void format_packet (struct pppoe_packet *, int, void (*)(void *, char *,...), void *);
+static void format_tag (struct pppoe_tag *, void (*)(void *, char *,...), void *);
+struct buffer_poe_info {
+ char *ptr;
+ int len;
+};
+
+void poe_die (int status);
+
+
+/*
+ * vpoe_slprintf - like vsprintf, except we
+ * also specify the length of the output buffer, and we handle
+ * %r (recursive format), %m (poe_error message), %v (visible string),
+ * %q (quoted string), %t (current time) and %E (Ether address) formats.
+ * Doesn't do floating-point formats.
+ * Returns the number of chars put into buf.
+ */
+#define OUTCHAR(c) (buflen > 0? (--buflen, *buf++ = (c)): 0)
+
+int
+vpoe_slprintf (char *buf, int buflen, char *fmt, va_list args)
+{
+ int c, i, n;
+ int width, prec, fillch;
+ int base, len, neg, quoted;
+ unsigned long val = 0;
+ char *str, *f, *buf0;
+ unsigned char *p;
+ char num[32];
+ time_t t;
+ static char hexchars[] = "0123456789abcdef";
+ struct buffer_poe_info bufpoe_info;
+
+ buf0 = buf;
+ --buflen;
+ while (buflen > 0) {
+ for (f = fmt; *f != '%' && *f != 0; ++f);
+ if (f > fmt) {
+ len = f - fmt;
+ if (len > buflen)
+ len = buflen;
+ memcpy (buf, fmt, len);
+ buf += len;
+ buflen -= len;
+ fmt = f;
+ }
+ if (*fmt == 0)
+ break;
+ c = *++fmt;
+ width = 0;
+ prec = -1;
+ fillch = ' ';
+ if (c == '0') {
+ fillch = '0';
+ c = *++fmt;
+ }
+ if (c == '*') {
+ width = va_arg (args, int);
+ c = *++fmt;
+ }
+ else {
+ while (isdigit (c)) {
+ width = width * 10 + c - '0';
+ c = *++fmt;
+ }
+ }
+ if (c == '.') {
+ c = *++fmt;
+ if (c == '*') {
+ prec = va_arg (args, int);
+ c = *++fmt;
+ }
+ else {
+ prec = 0;
+ while (isdigit (c)) {
+ prec = prec * 10 + c - '0';
+ c = *++fmt;
+ }
+ }
+ }
+ str = 0;
+ base = 0;
+ neg = 0;
+ ++fmt;
+ switch (c) {
+ case 'd':
+ i = va_arg (args, int);
+ if (i < 0) {
+ neg = 1;
+ val = -i;
+ }
+ else
+ val = i;
+ base = 10;
+ break;
+ case 'o':
+ val = va_arg (args, unsigned int);
+ base = 8;
+ break;
+ case 'x':
+ case 'X':
+ val = va_arg (args, unsigned int);
+ base = 16;
+ break;
+ case 'p':
+ val = (unsigned long) va_arg (args, void *);
+ base = 16;
+ neg = 2;
+ break;
+ case 's':
+ str = va_arg (args, char *);
+ break;
+ case 'c':
+ num[0] = va_arg (args, int);
+ num[1] = 0;
+ str = num;
+ break;
+ case 'm':
+ str = strerror (errno);
+ break;
+ case 'E':
+ p = va_arg (args, unsigned char *);
+ for (n = ETH_ALEN; n > 0; --n) {
+ c = *p++;
+ OUTCHAR (hexchars[(c >> 4) & 0xf]);
+ OUTCHAR (hexchars[c & 0xf]);
+ if (n > 1)
+ OUTCHAR (':');
+ }
+ continue;
+ case 'r':
+ f = va_arg (args, char *);
+#ifndef __powerpc__
+ n = vpoe_slprintf (buf, buflen + 1, f, va_arg (args, va_list));
+#else
+ /* On the powerpc, a va_list is an array of 1 structure */
+ n = vpoe_slprintf (buf, buflen + 1, f, va_arg (args, void *));
+#endif
+ buf += n;
+ buflen -= n;
+ continue;
+ case 't':
+ time (&t);
+ str = ctime (&t);
+ str += 4; /* chop off the day name */
+ str[15] = 0; /* chop off year and newline */
+ break;
+ case 'v': /* "visible" string */
+ case 'q': /* quoted string */
+ quoted = c == 'q';
+ p = va_arg (args, unsigned char *);
+ if (fillch == '0' && prec >= 0) {
+ n = prec;
+ }
+ else {
+ n = strlen ((char *) p);
+ if (prec >= 0 && n > prec)
+ n = prec;
+ }
+ while (n > 0 && buflen > 0) {
+ c = *p++;
+ --n;
+ if (!quoted && c >= 0x80) {
+ OUTCHAR ('M');
+ OUTCHAR ('-');
+ c -= 0x80;
+ }
+ if (quoted && (c == '"' || c == '\\'))
+ OUTCHAR ('\\');
+ if (c < 0x20 || (0x7f <= c && c < 0xa0)) {
+ if (quoted) {
+ OUTCHAR ('\\');
+ switch (c) {
+ case '\t':
+ OUTCHAR ('t');
+ break;
+ case '\n':
+ OUTCHAR ('n');
+ break;
+ case '\b':
+ OUTCHAR ('b');
+ break;
+ case '\f':
+ OUTCHAR ('f');
+ break;
+ default:
+ OUTCHAR ('x');
+ OUTCHAR (hexchars[c >> 4]);
+ OUTCHAR (hexchars[c & 0xf]);
+ }
+ }
+ else {
+ if (c == '\t')
+ OUTCHAR (c);
+ else {
+ OUTCHAR ('^');
+ OUTCHAR (c ^ 0x40);
+ }
+ }
+ }
+ else
+ OUTCHAR (c);
+ }
+ continue;
+ case 'P': /* print PPPoE packet */
+ bufpoe_info.ptr = buf;
+ bufpoe_info.len = buflen + 1;
+ p = va_arg (args, unsigned char *);
+ n = va_arg (args, int);
+ format_packet ((struct pppoe_packet *) p, n, vslp_printer, &bufpoe_info);
+ buf = bufpoe_info.ptr;
+ buflen = bufpoe_info.len - 1;
+ continue;
+ case 'T': /* print PPPoE tag */
+ bufpoe_info.ptr = buf;
+ bufpoe_info.len = buflen + 1;
+ p = va_arg (args, unsigned char *);
+ format_tag ((struct pppoe_tag *) p, vslp_printer, &bufpoe_info);
+ buf = bufpoe_info.ptr;
+ buflen = bufpoe_info.len - 1;
+ continue;
+ case 'B':
+ p = va_arg (args, unsigned char *);
+ for (n = prec; n > 0; --n) {
+ c = *p++;
+ if (fillch == ' ')
+ OUTCHAR (' ');
+ OUTCHAR (hexchars[(c >> 4) & 0xf]);
+ OUTCHAR (hexchars[c & 0xf]);
+ }
+ continue;
+ default:
+ *buf++ = '%';
+ if (c != '%')
+ --fmt; /* so %z outputs %z etc. */
+ --buflen;
+ continue;
+ }
+ if (base != 0) {
+ str = num + sizeof (num);
+ *--str = 0;
+ while (str > num + neg) {
+ *--str = hexchars[val % base];
+ val = val / base;
+ if (--prec <= 0 && val == 0)
+ break;
+ }
+ switch (neg) {
+ case 1:
+ *--str = '-';
+ break;
+ case 2:
+ *--str = 'x';
+ *--str = '0';
+ break;
+ }
+ len = num + sizeof (num) - 1 - str;
+ }
+ else {
+ len = strlen (str);
+ if (prec >= 0 && len > prec)
+ len = prec;
+ }
+ if (width > 0) {
+ if (width > buflen)
+ width = buflen;
+ if ((n = width - len) > 0) {
+ buflen -= n;
+ for (; n > 0; --n)
+ *buf++ = fillch;
+ }
+ }
+ if (len > buflen)
+ len = buflen;
+ memcpy (buf, str, len);
+ buf += len;
+ buflen -= len;
+ }
+ *buf = 0;
+ return buf - buf0;
+}
+
+/*
+ * vslp_printer - used in processing a %P format
+ */
+static void
+vslp_printer (void *arg, char *fmt,...)
+{
+ int n;
+ va_list pvar;
+ struct buffer_poe_info *bi;
+
+ va_start (pvar, fmt);
+
+ bi = (struct buffer_poe_info *) arg;
+ n = vpoe_slprintf (bi->ptr, bi->len, fmt, pvar);
+ va_end (pvar);
+
+ bi->ptr += n;
+ bi->len -= n;
+}
+
+/*
+ * format_packet - make a readable representation of a packet,
+ * calling `printer(arg, format, ...)' to output it.
+ */
+static void
+format_packet (struct pppoe_packet *p,
+ int len,
+ void (*printer) (void *, char *,...),
+ void *arg)
+{
+ struct pppoe_tag *t;
+
+ printer (arg, "Ether addr: %E\n", p->addr.sll_addr);
+
+ switch ((unsigned) ntohs (p->addr.sll_protocol)) {
+ case ETH_P_PPPOE_DISC:
+ printer (arg, " (PPPOE Discovery)\n");
+ break;
+ case ETH_P_PPPOE_SESS:
+ printer (arg, " (PPPOE Session)\n");
+ break;
+ }
+
+ printer (arg, " PPPoE hdr: ver=0x%01x type=0x%01x code=0x%02x "
+ "sid=0x%04x length=0x%04x ", (unsigned) p->hdr->ver,
+ (unsigned) p->hdr->type, (unsigned) p->hdr->code, (unsigned) p->hdr->sid,
+ (unsigned) ntohs (p->hdr->length));
+
+ switch (p->hdr->code) {
+ case PADI_CODE:
+ printer (arg, "(PADI)\n");
+ break;
+ case PADO_CODE:
+ printer (arg, "(PADO)\n");
+ break;
+ case PADR_CODE:
+ printer (arg, "(PADR)\n");
+ break;
+ case PADS_CODE:
+ printer (arg, "(PADS)\n");
+ break;
+ case PADT_CODE:
+ printer (arg, "(PADT)\n");
+ break;
+ default:
+ printer (arg, "(Unknown)\n");
+ }
+
+#if 0
+ if (ntohs (p->addr.sll_protocol) != ETH_P_PPPOE_DISC) {
+ len = ntohs (p->length);
+
+ if (len > 64)
+ printer (arg, " %.64B ...", (p + 1));
+ else
+ printer (arg, " %.*B", len, p + 1);
+
+ return;
+ }
+#endif
+
+ for(t = (struct pppoe_tag *) (&p->hdr->tag);
+ (t < (struct pppoe_tag *) ((char *) (&p->hdr->tag) + ntohs (p->hdr->length))) &&
+ ntohs (t->tag_type) != PTT_EOL;
+ t = (struct pppoe_tag *) ((char *) (t + 1) + ntohs (t->tag_len))) {
+ format_tag (t, printer, arg);
+ }
+}
+
+/*
+ * format_tag - make a readable representation of a tag,
+ * calling `printer(arg, format, ...)' to output it.
+ */
+static void
+format_tag (struct pppoe_tag *t,
+ void (*printer) (void *, char *,...),
+ void *arg)
+{
+ printer (arg, " PPPoE tag: type=%04x length=%04x ",
+ ntohs (t->tag_type), ntohs (t->tag_len));
+ switch ( t->tag_type ) {
+ case PTT_EOL:
+ printer (arg, "(End of list)");
+ break;
+ case PTT_SRV_NAME:
+ printer (arg, "(Service name)");
+ break;
+ case PTT_AC_NAME:
+ printer (arg, "(AC Name)");
+ break;
+ case PTT_HOST_UNIQ:
+ printer (arg, "(Host Uniq)");
+ break;
+ case PTT_AC_COOKIE:
+ printer (arg, "(AC Cookie)");
+ break;
+ case PTT_VENDOR:
+ printer (arg, "(Vendor Specific)");
+ break;
+ case PTT_RELAY_SID:
+ printer (arg, "(Relay Session ID)");
+ break;
+ case PTT_SRV_ERR:
+ printer (arg, "(Service Name Error)");
+ break;
+ case PTT_SYS_ERR:
+ printer (arg, "(AC System Error)");
+ break;
+ case PTT_GEN_ERR:
+ printer (arg, "(Generic Error)");
+ break;
+ default:
+ printer (arg, "(Unknown)");
+ }
+ if (ntohs (t->tag_len) > 0)
+ switch ( t->tag_type ) {
+ case PTT_SRV_NAME:
+ case PTT_AC_NAME:
+ case PTT_SRV_ERR:
+ case PTT_SYS_ERR:
+ case PTT_GEN_ERR: /* ascii data */
+ {
+ char *buf;
+ buf = malloc (ntohs (t->tag_len) + 1);
+ memset (buf, 0, ntohs (t->tag_len) + 1);
+ strncpy (buf, (char *) (t + 1), ntohs (t->tag_len));
+// buf[ntohs (t->tag_len)] = '\0';
+ printer (arg, " data (UTF-8): %s", buf);
+ free (buf);
+ break;
+ }
+
+ case PTT_HOST_UNIQ:
+ case PTT_AC_COOKIE:
+ case PTT_RELAY_SID:
+ printer (arg, " data (bin): %.*B", ntohs (t->tag_len), (char *) (t + 1));
+ break;
+
+ default:
+ printer (arg, " unrecognized data");
+ }
+}
+
+/*
+ * poe_logit - does the hard work for poe_fatal et al.
+ */
+static void
+poe_logit (struct session *ses,int level, char *fmt, va_list args)
+{
+ int n;
+ char buf[256];
+
+ n = vpoe_slprintf (buf, sizeof (buf), fmt, args);
+ syslog (level, "%s", buf);
+ if (log_to_fd >= 0 && (level != LOG_DEBUG || ses->opt_debug)) {
+ if (buf[n - 1] != '\n')
+ buf[n++] = '\n';
+ if (write (log_to_fd, buf, n) != n)
+ log_to_fd = -1;
+ }
+}
+
+/*
+ * poe_fatal - log an poe_error message and poe_die horribly.
+ */
+void
+poe_fatal (struct session *ses, char *fmt,...)
+{
+ va_list pvar;
+
+ va_start (pvar, fmt);
+
+ poe_logit (ses,LOG_ERR, fmt, pvar);
+ va_end (pvar);
+
+ poe_die(1); /* as promised */
+}
+
+/*
+ * poe_error - log an poe_error message.
+ */
+void
+poe_error (struct session *ses,char *fmt,...)
+{
+ va_list pvar;
+
+ va_start (pvar, fmt);
+
+ poe_logit (ses,LOG_ERR, fmt, pvar);
+ va_end (pvar);
+}
+
+/*
+ * poe_warn - log a poe_warning message.
+ */
+void
+poe_warn (struct session *ses,char *fmt,...)
+{
+ va_list pvar;
+
+ va_start (pvar, fmt);
+
+ poe_logit (ses,LOG_WARNING, fmt, pvar);
+ va_end (pvar);
+}
+
+#if 0
+/*
+ * poe_notice - log a poe_notice-level message.
+ */
+void
+poe_notice (int log_to_fd ,char *fmt,...)
+{
+ va_list pvar;
+
+ va_start (pvar, fmt);
+
+ poe_logit (log_to_fd,LOG_NOTICE, fmt, pvar);
+ va_end (pvar);
+}
+
+#endif
+/*
+ * poe_info - log an poe_informational message.
+ */
+void
+poe_info (struct session *ses,char *fmt,...)
+{
+ va_list pvar;
+
+ va_start (pvar, fmt);
+
+ poe_logit (ses,LOG_INFO, fmt, pvar);
+ va_end (pvar);
+}
+
+/*
+ * poe_dbglog - log a debug message.
+ */
+void
+poe_dbglog (struct session *ses ,char *fmt,...)
+{
+ va_list pvar;
+
+ va_start (pvar, fmt);
+
+ poe_logit (ses,LOG_DEBUG, fmt, pvar);
+ va_end (pvar);
+}
+
+/*
+ * Create a file containing our process ID.
+ */
+void
+poe_create_pidfile (struct session *ses)
+{
+ FILE *pidfile;
+
+ sprintf (pidfilename, "%s%s.pid", _PATH_VARRUN, "pppoed");
+ if ((pidfile = fopen (pidfilename, "w")) != NULL) {
+ fprintf (pidfile, "%d\n", getpid ());
+ (void) fclose (pidfile);
+ }
+ else {
+ poe_error (ses,"Failed to create pid file %s: %m", pidfilename);
+ pidfilename[0] = 0;
+ }
+}
+
+/*
+ * detach - detach us from the controlling terminal.
+ */
+void
+poe_detach (struct session *ses)
+{
+ if (ses->detached)
+ return;
+
+ if ((daemon (0, 0)) < 0) {
+ poe_error (ses,"Couldn't detach (daemon failed: %m)");
+#if 0
+ poe_die (1); /* or just return? */
+#endif
+ }
+ ses->detached = 1;
+ ses->log_to_fd = -1;
+ /* update pid files if they have been written already */
+ if (pidfilename[0])
+ poe_create_pidfile (ses);
+}
+
+/*
+ * cleanup - restore anything which needs to be restored before we exit
+ */
+/* ARGSUSED */
+static void
+cleanup ()
+{
+ if (pidfilename[0] != 0 && unlink (pidfilename) < 0 && errno != ENOENT)
+ syslog (LOG_INFO,"unable to delete pid file ");
+ pidfilename[0] = 0;
+}
+
+/*
+ * poe_die - clean up state and exit with the specified status.
+ */
+void
+poe_die (int status)
+{
+ cleanup ();
+ syslog (LOG_INFO, "Exit.");
+ exit (status);
+}
projects / ppp.git / commitdiff