ipcp.c revision 31514
16059Samurai/* 26059Samurai * PPP IP Control Protocol (IPCP) Module 36059Samurai * 46059Samurai * Written by Toshiharu OHNO (tony-o@iij.ad.jp) 56059Samurai * 66059Samurai * Copyright (C) 1993, Internet Initiative Japan, Inc. All rights reserverd. 76059Samurai * 86059Samurai * Redistribution and use in source and binary forms are permitted 96059Samurai * provided that the above copyright notice and this paragraph are 106059Samurai * duplicated in all such forms and that any documentation, 116059Samurai * advertising materials, and other materials related to such 126059Samurai * distribution and use acknowledge that the software was developed 136059Samurai * by the Internet Initiative Japan, Inc. The name of the 146059Samurai * IIJ may not be used to endorse or promote products derived 156059Samurai * from this software without specific prior written permission. 166059Samurai * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR 176059Samurai * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED 186059Samurai * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE. 196059Samurai * 2031514Sbrian * $Id: ipcp.c,v 1.38 1997/11/22 03:37:34 brian Exp $ 218857Srgrimes * 226059Samurai * TODO: 236059Samurai * o More RFC1772 backwoard compatibility 246059Samurai */ 2530715Sbrian#include <sys/param.h> 266059Samurai#include <netinet/in_systm.h> 2729048Sbrian#include <netinet/in.h> 286059Samurai#include <netinet/ip.h> 296059Samurai#include <arpa/inet.h> 306059Samurai#include <sys/socket.h> 3130715Sbrian#include <netdb.h> 3230715Sbrian 3329048Sbrian#include <limits.h> 3430715Sbrian#include <stdio.h> 3530715Sbrian#include <string.h> 3631272Sbrian#include <time.h> 3730715Sbrian#include <unistd.h> 3830715Sbrian 3931343Sbrian#include "command.h" 4030715Sbrian#include "mbuf.h" 4130715Sbrian#include "log.h" 4230715Sbrian#include "defs.h" 4330715Sbrian#include "timer.h" 4429048Sbrian#include "fsm.h" 4529048Sbrian#include "lcpproto.h" 4629048Sbrian#include "lcp.h" 4729048Sbrian#include "ipcp.h" 486059Samurai#include "slcompress.h" 496059Samurai#include "os.h" 506059Samurai#include "phase.h" 5126142Sbrian#include "loadalias.h" 526059Samurai#include "vars.h" 5330715Sbrian#include "vjcomp.h" 5430733Sbrian#include "ip.h" 5531272Sbrian#include "throughput.h" 566059Samurai 5730715Sbrian#ifndef NOMSEXT 5830715Sbrianstruct in_addr ns_entries[2]; 5930715Sbrianstruct in_addr nbns_entries[2]; 6030715Sbrian#endif 616059Samurai 626059Samuraistruct ipcpstate IpcpInfo; 6330715Sbrianstruct in_range DefMyAddress; 6430715Sbrianstruct in_range DefHisAddress; 6530715Sbrianstruct in_addr TriggerAddress; 6628394Sbrianint HaveTriggerAddress; 676059Samurai 6826516Sbrianstatic void IpcpSendConfigReq(struct fsm *); 6926516Sbrianstatic void IpcpSendTerminateAck(struct fsm *); 7026516Sbrianstatic void IpcpSendTerminateReq(struct fsm *); 7126516Sbrianstatic void IpcpDecodeConfig(u_char *, int, int); 7226516Sbrianstatic void IpcpLayerStart(struct fsm *); 7326516Sbrianstatic void IpcpLayerFinish(struct fsm *); 7426516Sbrianstatic void IpcpLayerUp(struct fsm *); 7526516Sbrianstatic void IpcpLayerDown(struct fsm *); 7626516Sbrianstatic void IpcpInitRestartCounter(struct fsm *); 776059Samurai 786059Samurai#define REJECTED(p, x) (p->his_reject & (1<<x)) 796059Samurai 806059Samuraistruct fsm IpcpFsm = { 816059Samurai "IPCP", 826059Samurai PROTO_IPCP, 836059Samurai IPCP_MAXCODE, 846059Samurai OPEN_ACTIVE, 856059Samurai ST_INITIAL, 866059Samurai 0, 0, 0, 876059Samurai 886059Samurai 0, 8928679Sbrian {0, 0, 0, NULL, NULL, NULL}, 9028679Sbrian {0, 0, 0, NULL, NULL, NULL}, 9128461Sbrian LogIPCP, 926059Samurai 936059Samurai IpcpLayerUp, 946059Samurai IpcpLayerDown, 956059Samurai IpcpLayerStart, 966059Samurai IpcpLayerFinish, 976059Samurai IpcpInitRestartCounter, 986059Samurai IpcpSendConfigReq, 996059Samurai IpcpSendTerminateReq, 1006059Samurai IpcpSendTerminateAck, 1016059Samurai IpcpDecodeConfig, 1026059Samurai}; 1036059Samurai 10431343Sbrianstatic const char *cftypes[] = { 10531171Sbrian /* Check out the latest ``Assigned numbers'' rfc (rfc1700.txt) */ 10631171Sbrian "???", 10731171Sbrian "IPADDRS", /* 1: IP-Addresses */ /* deprecated */ 10831171Sbrian "COMPPROTO", /* 2: IP-Compression-Protocol */ 10931171Sbrian "IPADDR", /* 3: IP-Address */ 1106059Samurai}; 1116059Samurai 11231171Sbrian#define NCFTYPES (sizeof(cftypes)/sizeof(char *)) 11331171Sbrian 11431343Sbrianstatic const char *cftypes128[] = { 11531171Sbrian /* Check out the latest ``Assigned numbers'' rfc (rfc1700.txt) */ 11631171Sbrian "???", 11731171Sbrian "PRIDNS", /* 129: Primary DNS Server Address */ 11831171Sbrian "PRINBNS", /* 130: Primary NBNS Server Address */ 11931171Sbrian "SECDNS", /* 131: Secondary DNS Server Address */ 12031171Sbrian "SECNBNS", /* 132: Secondary NBNS Server Address */ 12131171Sbrian}; 12231171Sbrian 12331171Sbrian#define NCFTYPES128 (sizeof(cftypes)/sizeof(char *)) 12431171Sbrian 12531272Sbrianstruct pppThroughput throughput; 12631272Sbrian 12731272Sbrianvoid 12831272SbrianIpcpAddInOctets(int n) 1296059Samurai{ 13031272Sbrian throughput_addin(&throughput, n); 1316059Samurai} 1326059Samurai 13331272Sbrianvoid 13431272SbrianIpcpAddOutOctets(int n) 1356059Samurai{ 13631272Sbrian throughput_addout(&throughput, n); 1376059Samurai} 1386059Samurai 13925630Sbrianint 14031343SbrianReportIpcpStatus(struct cmdargs const *arg) 1416059Samurai{ 1426059Samurai struct ipcpstate *icp = &IpcpInfo; 1436059Samurai struct fsm *fp = &IpcpFsm; 1446059Samurai 14526516Sbrian if (!VarTerm) 14626516Sbrian return 1; 14726516Sbrian fprintf(VarTerm, "%s [%s]\n", fp->name, StateNames[fp->state]); 14831514Sbrian fprintf(VarTerm, " his side: %s, %s\n", 14931514Sbrian inet_ntoa(icp->his_ipaddr), vj2asc(icp->his_compproto)); 15031514Sbrian fprintf(VarTerm, " my side: %s, %s\n", 15131514Sbrian inet_ntoa(icp->want_ipaddr), vj2asc(icp->want_compproto)); 15229048Sbrian 15326516Sbrian fprintf(VarTerm, "Defaults:\n"); 15426516Sbrian fprintf(VarTerm, " My Address: %s/%d\n", 15528679Sbrian inet_ntoa(DefMyAddress.ipaddr), DefMyAddress.width); 15626516Sbrian fprintf(VarTerm, " His Address: %s/%d\n", 15728679Sbrian inet_ntoa(DefHisAddress.ipaddr), DefHisAddress.width); 15828394Sbrian if (HaveTriggerAddress) 15928679Sbrian fprintf(VarTerm, " Negotiation(trigger): %s\n", inet_ntoa(TriggerAddress)); 16028394Sbrian else 16128679Sbrian fprintf(VarTerm, " Negotiation(trigger): MYADDR\n"); 16226516Sbrian 16331272Sbrian fprintf(VarTerm, "\n"); 16431272Sbrian throughput_disp(&throughput, VarTerm); 16531272Sbrian 16626516Sbrian return 0; 1676059Samurai} 1686059Samurai 1696059Samuraivoid 1706059SamuraiIpcpDefAddress() 1716059Samurai{ 1726059Samurai struct hostent *hp; 1736059Samurai char name[200]; 1746059Samurai 17530715Sbrian memset(&DefMyAddress, '\0', sizeof(DefMyAddress)); 17630715Sbrian memset(&DefHisAddress, '\0', sizeof(DefHisAddress)); 17728394Sbrian TriggerAddress.s_addr = 0; 17828394Sbrian HaveTriggerAddress = 0; 1796059Samurai if (gethostname(name, sizeof(name)) == 0) { 18028679Sbrian hp = gethostbyname(name); 18128679Sbrian if (hp && hp->h_addrtype == AF_INET) { 18230715Sbrian memcpy(&DefMyAddress.ipaddr.s_addr, hp->h_addr, hp->h_length); 18328679Sbrian } 1846059Samurai } 1856059Samurai} 1866059Samurai 1876059Samuraivoid 1886059SamuraiIpcpInit() 1896059Samurai{ 1906059Samurai struct ipcpstate *icp = &IpcpInfo; 1916059Samurai 1926059Samurai FsmInit(&IpcpFsm); 19330715Sbrian memset(icp, '\0', sizeof(struct ipcpstate)); 19431121Sbrian if ((mode & MODE_DEDICATED) && !GetLabel()) { 1956059Samurai icp->want_ipaddr.s_addr = icp->his_ipaddr.s_addr = 0; 1966059Samurai } else { 1976059Samurai icp->want_ipaddr.s_addr = DefMyAddress.ipaddr.s_addr; 1986059Samurai icp->his_ipaddr.s_addr = DefHisAddress.ipaddr.s_addr; 1996059Samurai } 2009440Samurai 2019440Samurai /* 20229048Sbrian * Some implementations of PPP require that we send a 20329048Sbrian * *special* value as our address, even though the rfc specifies 20429048Sbrian * full negotiation (e.g. "0.0.0.0" or Not "0.0.0.0"). 2059440Samurai */ 20628394Sbrian if (HaveTriggerAddress) { 20728394Sbrian icp->want_ipaddr.s_addr = TriggerAddress.s_addr; 20828461Sbrian LogPrintf(LogIPCP, "Using trigger address %s\n", inet_ntoa(TriggerAddress)); 2099440Samurai } 2106059Samurai if (Enabled(ConfVjcomp)) 21130500Sbrian icp->want_compproto = (PROTO_VJCOMP << 16) | ((MAX_STATES - 1) << 8) | 1; 2126059Samurai else 2136059Samurai icp->want_compproto = 0; 2146059Samurai icp->heis1172 = 0; 2156059Samurai IpcpFsm.maxconfig = 10; 21631272Sbrian throughput_init(&throughput); 2176059Samurai} 2186059Samurai 2196059Samuraistatic void 22028679SbrianIpcpInitRestartCounter(struct fsm * fp) 2216059Samurai{ 2226735Samurai fp->FsmTimer.load = VarRetryTimeout * SECTICKS; 2236059Samurai fp->restart = 5; 2246059Samurai} 2256059Samurai 2266059Samuraistatic void 22728679SbrianIpcpSendConfigReq(struct fsm * fp) 2286059Samurai{ 2296059Samurai u_char *cp; 2306059Samurai struct ipcpstate *icp = &IpcpInfo; 23131514Sbrian struct lcp_opt o; 2326059Samurai 2336059Samurai cp = ReqBuff; 23428461Sbrian LogPrintf(LogIPCP, "IpcpSendConfigReq\n"); 23531514Sbrian if (!DEV_IS_SYNC || !REJECTED(icp, TY_IPADDR)) { 23631514Sbrian o.id = TY_IPADDR; 23731514Sbrian o.len = 6; 23831514Sbrian *(u_long *)o.data = icp->want_ipaddr.s_addr; 23931514Sbrian cp += LcpPutConf(LogIPCP, cp, &o, cftypes[o.id], 24031514Sbrian inet_ntoa(icp->want_ipaddr)); 24131514Sbrian } 24231514Sbrian 2436059Samurai if (icp->want_compproto && !REJECTED(icp, TY_COMPPROTO)) { 24431514Sbrian const char *args; 24531514Sbrian o.id = TY_COMPPROTO; 24631514Sbrian if (icp->heis1172) { 24731514Sbrian o.len = 4; 24831514Sbrian *(u_short *)o.data = htons(PROTO_VJCOMP); 24931514Sbrian args = ""; 25031514Sbrian } else { 25131514Sbrian o.len = 6; 25231514Sbrian *(u_long *)o.data = htonl(icp->want_compproto); 25331514Sbrian args = vj2asc(icp->want_compproto); 25431514Sbrian } 25531514Sbrian cp += LcpPutConf(LogIPCP, cp, &o, cftypes[o.id], args); 2566059Samurai } 2576059Samurai FsmOutput(fp, CODE_CONFIGREQ, fp->reqid++, ReqBuff, cp - ReqBuff); 2586059Samurai} 2596059Samurai 2606059Samuraistatic void 26128679SbrianIpcpSendTerminateReq(struct fsm * fp) 2626059Samurai{ 2636059Samurai /* XXX: No code yet */ 2646059Samurai} 2656059Samurai 2666059Samuraistatic void 26728679SbrianIpcpSendTerminateAck(struct fsm * fp) 2686059Samurai{ 26928461Sbrian LogPrintf(LogIPCP, "IpcpSendTerminateAck\n"); 2706059Samurai FsmOutput(fp, CODE_TERMACK, fp->reqid++, NULL, 0); 2716059Samurai} 2726059Samurai 2736059Samuraistatic void 27428679SbrianIpcpLayerStart(struct fsm * fp) 2756059Samurai{ 27628461Sbrian LogPrintf(LogIPCP, "IpcpLayerStart.\n"); 2776059Samurai} 2786059Samurai 2796059Samuraistatic void 28028679SbrianIpcpLayerFinish(struct fsm * fp) 2816059Samurai{ 28228461Sbrian LogPrintf(LogIPCP, "IpcpLayerFinish.\n"); 28326098Sbrian reconnect(RECON_FALSE); 2846059Samurai LcpClose(); 2856059Samurai NewPhase(PHASE_TERMINATE); 2866059Samurai} 2876059Samurai 2886059Samuraistatic void 28928679SbrianIpcpLayerDown(struct fsm * fp) 2906059Samurai{ 29128461Sbrian LogPrintf(LogIPCP, "IpcpLayerDown.\n"); 29231272Sbrian throughput_stop(&throughput); 29331272Sbrian throughput_log(&throughput, LogIPCP, NULL); 2946059Samurai} 2956059Samurai 2966059Samurai/* 2976059Samurai * Called when IPCP has reached to OPEN state 2986059Samurai */ 2996059Samuraistatic void 30028679SbrianIpcpLayerUp(struct fsm * fp) 3016059Samurai{ 3026059Samurai char tbuff[100]; 3036059Samurai 30425630Sbrian Prompt(); 30528461Sbrian LogPrintf(LogIPCP, "IpcpLayerUp(%d).\n", fp->state); 30628679Sbrian snprintf(tbuff, sizeof(tbuff), "myaddr = %s ", 30728679Sbrian inet_ntoa(IpcpInfo.want_ipaddr)); 30830187Sbrian 30930187Sbrian if (IpcpInfo.his_compproto >> 16 == PROTO_VJCOMP) 31030187Sbrian VjInit((IpcpInfo.his_compproto >> 8) & 255); 31130187Sbrian 31228461Sbrian LogPrintf(LogIsKept(LogIPCP) ? LogIPCP : LogLINK, " %s hisaddr = %s\n", 31328679Sbrian tbuff, inet_ntoa(IpcpInfo.his_ipaddr)); 31425630Sbrian if (OsSetIpaddress(IpcpInfo.want_ipaddr, IpcpInfo.his_ipaddr, ifnetmask) < 0) { 31526516Sbrian if (VarTerm) 31626516Sbrian LogPrintf(LogERROR, "IpcpLayerUp: unable to set ip address\n"); 31726516Sbrian return; 31825630Sbrian } 31931343Sbrian#ifndef NOALIAS 32027763Sbrian if (mode & MODE_ALIAS) 32128679Sbrian VarPacketAliasSetAddress(IpcpInfo.want_ipaddr); 32231343Sbrian#endif 3236059Samurai OsLinkup(); 32431272Sbrian throughput_start(&throughput); 3256059Samurai StartIdleTimer(); 3266059Samurai} 3276059Samurai 3286059Samuraivoid 3296059SamuraiIpcpUp() 3306059Samurai{ 3316059Samurai FsmUp(&IpcpFsm); 33228461Sbrian LogPrintf(LogIPCP, "IPCP Up event!!\n"); 3336059Samurai} 3346059Samurai 3356059Samuraivoid 3366059SamuraiIpcpOpen() 3376059Samurai{ 3386059Samurai FsmOpen(&IpcpFsm); 3396059Samurai} 3406059Samurai 3416059Samuraistatic int 34228679SbrianAcceptableAddr(struct in_range * prange, struct in_addr ipaddr) 3436059Samurai{ 34428974Sbrian LogPrintf(LogDEBUG, "requested = %x\n", htonl(ipaddr.s_addr)); 34528974Sbrian LogPrintf(LogDEBUG, "range = %x\n", htonl(prange->ipaddr.s_addr)); 34626516Sbrian LogPrintf(LogDEBUG, "/%x\n", htonl(prange->mask.s_addr)); 34726516Sbrian LogPrintf(LogDEBUG, "%x, %x\n", htonl(prange->ipaddr.s_addr & prange-> 34828679Sbrian mask.s_addr), htonl(ipaddr.s_addr & prange->mask.s_addr)); 34925661Sbrian return (prange->ipaddr.s_addr & prange->mask.s_addr) == 35028679Sbrian (ipaddr.s_addr & prange->mask.s_addr) && ipaddr.s_addr; 3516059Samurai} 3526059Samurai 3536059Samuraistatic void 35431034SbrianIpcpDecodeConfig(u_char * cp, int plen, int mode_type) 3556059Samurai{ 3566735Samurai int type, length; 3576059Samurai u_long *lp, compproto; 3586059Samurai struct compreq *pcomp; 35918752Sjkh struct in_addr ipaddr, dstipaddr, dnsstuff, ms_info_req; 3606059Samurai char tbuff[100]; 36121488Simp char tbuff2[100]; 3626059Samurai 3636059Samurai ackp = AckBuff; 3646059Samurai nakp = NakBuff; 3656059Samurai rejp = RejBuff; 3666059Samurai 3676059Samurai while (plen >= sizeof(struct fsmconfig)) { 3686059Samurai type = *cp; 3696059Samurai length = cp[1]; 37031171Sbrian if (type < NCFTYPES) 37121488Simp snprintf(tbuff, sizeof(tbuff), " %s[%d] ", cftypes[type], length); 37231171Sbrian else if (type > 128 && type < 128 + NCFTYPES128) 37331171Sbrian snprintf(tbuff, sizeof(tbuff), " %s[%d] ", cftypes128[type], length); 3746059Samurai else 37531171Sbrian snprintf(tbuff, sizeof(tbuff), " ??? "); 3766059Samurai 3776059Samurai switch (type) { 3786059Samurai case TY_IPADDR: /* RFC1332 */ 37928679Sbrian lp = (u_long *) (cp + 2); 3806059Samurai ipaddr.s_addr = *lp; 38128461Sbrian LogPrintf(LogIPCP, "%s %s\n", tbuff, inet_ntoa(ipaddr)); 3826059Samurai 38331034Sbrian switch (mode_type) { 3846059Samurai case MODE_REQ: 3856059Samurai if (!AcceptableAddr(&DefHisAddress, ipaddr)) { 38628679Sbrian /* 38728679Sbrian * If destination address is not acceptable, insist to use what we 38828679Sbrian * want to use. 38928679Sbrian */ 39030715Sbrian memcpy(nakp, cp, 2); 39130715Sbrian memcpy(nakp+2, &IpcpInfo.his_ipaddr.s_addr, length); 39228679Sbrian nakp += length; 39328679Sbrian break; 3946059Samurai } 3956059Samurai IpcpInfo.his_ipaddr = ipaddr; 39630715Sbrian memcpy(ackp, cp, length); 3976059Samurai ackp += length; 3986059Samurai break; 3996059Samurai case MODE_NAK: 4006059Samurai if (AcceptableAddr(&DefMyAddress, ipaddr)) { 40128679Sbrian 40228679Sbrian /* 40328679Sbrian * Use address suggested by peer. 40428679Sbrian */ 40528974Sbrian snprintf(tbuff2, sizeof(tbuff2), "%s changing address: %s ", tbuff, 40628974Sbrian inet_ntoa(IpcpInfo.want_ipaddr)); 40728461Sbrian LogPrintf(LogIPCP, "%s --> %s\n", tbuff2, inet_ntoa(ipaddr)); 4086059Samurai IpcpInfo.want_ipaddr = ipaddr; 4096059Samurai } 4106059Samurai break; 4116059Samurai case MODE_REJ: 4126059Samurai IpcpInfo.his_reject |= (1 << type); 4136059Samurai break; 4146059Samurai } 4156059Samurai break; 4166059Samurai case TY_COMPPROTO: 41728679Sbrian lp = (u_long *) (cp + 2); 4186059Samurai compproto = htonl(*lp); 41931514Sbrian LogPrintf(LogIPCP, "%s %s\n", tbuff, vj2asc(compproto)); 4206059Samurai 42131034Sbrian switch (mode_type) { 4226059Samurai case MODE_REQ: 4236059Samurai if (!Acceptable(ConfVjcomp)) { 42430715Sbrian memcpy(rejp, cp, length); 4256059Samurai rejp += length; 4266059Samurai } else { 42728679Sbrian pcomp = (struct compreq *) (cp + 2); 4286059Samurai switch (length) { 42928679Sbrian case 4: /* RFC1172 */ 4306059Samurai if (ntohs(pcomp->proto) == PROTO_VJCOMP) { 43126940Sbrian LogPrintf(LogWARN, "Peer is speaking RFC1172 compression protocol !\n"); 4326059Samurai IpcpInfo.heis1172 = 1; 4336059Samurai IpcpInfo.his_compproto = compproto; 43430715Sbrian memcpy(ackp, cp, length); 4356059Samurai ackp += length; 4366059Samurai } else { 43730715Sbrian memcpy(nakp, cp, 2); 4386059Samurai pcomp->proto = htons(PROTO_VJCOMP); 43930715Sbrian memcpy(nakp+2, &pcomp, 2); 4406059Samurai nakp += length; 4416059Samurai } 4426059Samurai break; 44328679Sbrian case 6: /* RFC1332 */ 4446059Samurai if (ntohs(pcomp->proto) == PROTO_VJCOMP 44528679Sbrian && pcomp->slots < MAX_STATES && pcomp->slots > 2) { 4466059Samurai IpcpInfo.his_compproto = compproto; 4476059Samurai IpcpInfo.heis1172 = 0; 44830715Sbrian memcpy(ackp, cp, length); 4496059Samurai ackp += length; 4506059Samurai } else { 45130715Sbrian memcpy(nakp, cp, 2); 4526059Samurai pcomp->proto = htons(PROTO_VJCOMP); 4536059Samurai pcomp->slots = MAX_STATES - 1; 4546059Samurai pcomp->compcid = 0; 45530715Sbrian memcpy(nakp+2, &pcomp, sizeof(pcomp)); 4566059Samurai nakp += length; 4576059Samurai } 4586059Samurai break; 4596059Samurai default: 46030715Sbrian memcpy(rejp, cp, length); 4616059Samurai rejp += length; 4626059Samurai break; 4636059Samurai } 4646059Samurai } 4656059Samurai break; 4666059Samurai case MODE_NAK: 46728461Sbrian LogPrintf(LogIPCP, "%s changing compproto: %08x --> %08x\n", 46828679Sbrian tbuff, IpcpInfo.want_compproto, compproto); 4696059Samurai IpcpInfo.want_compproto = compproto; 4706059Samurai break; 4716059Samurai case MODE_REJ: 4726059Samurai IpcpInfo.his_reject |= (1 << type); 4736059Samurai break; 4746059Samurai } 4756059Samurai break; 47628679Sbrian case TY_IPADDRS: /* RFC1172 */ 47728679Sbrian lp = (u_long *) (cp + 2); 4786059Samurai ipaddr.s_addr = *lp; 47928679Sbrian lp = (u_long *) (cp + 6); 4806059Samurai dstipaddr.s_addr = *lp; 48128974Sbrian snprintf(tbuff2, sizeof(tbuff2), "%s %s,", tbuff, inet_ntoa(ipaddr)); 48228974Sbrian LogPrintf(LogIPCP, "%s %s\n", tbuff2, inet_ntoa(dstipaddr)); 4836059Samurai 48431034Sbrian switch (mode_type) { 4856059Samurai case MODE_REQ: 4866059Samurai IpcpInfo.his_ipaddr = ipaddr; 4876059Samurai IpcpInfo.want_ipaddr = dstipaddr; 48830715Sbrian memcpy(ackp, cp, length); 4896059Samurai ackp += length; 4906059Samurai break; 4916059Samurai case MODE_NAK: 49228974Sbrian snprintf(tbuff2, sizeof(tbuff2), "%s changing address: %s", tbuff, 49328974Sbrian inet_ntoa(IpcpInfo.want_ipaddr)); 49428974Sbrian LogPrintf(LogIPCP, "%s --> %s\n", tbuff2, inet_ntoa(ipaddr)); 4956059Samurai IpcpInfo.want_ipaddr = ipaddr; 4966059Samurai IpcpInfo.his_ipaddr = dstipaddr; 4976059Samurai break; 4986059Samurai case MODE_REJ: 4996059Samurai IpcpInfo.his_reject |= (1 << type); 5006059Samurai break; 5016059Samurai } 5026059Samurai break; 50318752Sjkh 50428679Sbrian /* 50528679Sbrian * MS extensions for MS's PPP 50628679Sbrian */ 50718752Sjkh 50826516Sbrian#ifndef NOMSEXT 50928679Sbrian case TY_PRIMARY_DNS: /* MS PPP DNS negotiation hack */ 51018752Sjkh case TY_SECONDARY_DNS: 51128679Sbrian if (!Enabled(ConfMSExt)) { 51228461Sbrian LogPrintf(LogIPCP, "MS NS req - rejected - msext disabled\n"); 51328679Sbrian IpcpInfo.my_reject |= (1 << type); 51430715Sbrian memcpy(rejp, cp, length); 51518752Sjkh rejp += length; 51618752Sjkh break; 51718752Sjkh } 51831034Sbrian switch (mode_type) { 51918752Sjkh case MODE_REQ: 52028679Sbrian lp = (u_long *) (cp + 2); 52118752Sjkh dnsstuff.s_addr = *lp; 52228679Sbrian ms_info_req.s_addr = ns_entries[((type - TY_PRIMARY_DNS) ? 1 : 0)].s_addr; 52328679Sbrian if (dnsstuff.s_addr != ms_info_req.s_addr) { 52428679Sbrian 52518752Sjkh /* 52628679Sbrian * So the client has got the DNS stuff wrong (first request) so 52728974Sbrian * we'll tell 'em how it is 52828679Sbrian */ 52930715Sbrian memcpy(nakp, cp, 2); /* copy first two (type/length) */ 53028679Sbrian LogPrintf(LogIPCP, "MS NS req %d:%s->%s - nak\n", 53128679Sbrian type, 53228679Sbrian inet_ntoa(dnsstuff), 53328679Sbrian inet_ntoa(ms_info_req)); 53430715Sbrian memcpy(nakp+2, &ms_info_req, length); 53518752Sjkh nakp += length; 53618752Sjkh break; 53718752Sjkh } 53828679Sbrian 53928679Sbrian /* 54028679Sbrian * Otherwise they have it right (this time) so we send a ack packet 54128679Sbrian * back confirming it... end of story 54228679Sbrian */ 54328679Sbrian LogPrintf(LogIPCP, "MS NS req %d:%s ok - ack\n", 54428679Sbrian type, 54528679Sbrian inet_ntoa(ms_info_req)); 54630715Sbrian memcpy(ackp, cp, length); 54718752Sjkh ackp += length; 54818752Sjkh break; 54928679Sbrian case MODE_NAK: /* what does this mean?? */ 55028679Sbrian LogPrintf(LogIPCP, "MS NS req %d - NAK??\n", type); 55118752Sjkh break; 55228679Sbrian case MODE_REJ: /* confused?? me to :) */ 55328679Sbrian LogPrintf(LogIPCP, "MS NS req %d - REJ??\n", type); 55418752Sjkh break; 55518752Sjkh } 55618752Sjkh break; 55718752Sjkh 55828679Sbrian case TY_PRIMARY_NBNS: /* MS PPP NetBIOS nameserver hack */ 55918752Sjkh case TY_SECONDARY_NBNS: 56028679Sbrian if (!Enabled(ConfMSExt)) { 56128679Sbrian LogPrintf(LogIPCP, "MS NBNS req - rejected - msext disabled\n"); 56228679Sbrian IpcpInfo.my_reject |= (1 << type); 56330715Sbrian memcpy(rejp, cp, length); 56428679Sbrian rejp += length; 56528679Sbrian break; 56628679Sbrian } 56731034Sbrian switch (mode_type) { 56818752Sjkh case MODE_REQ: 56928679Sbrian lp = (u_long *) (cp + 2); 57018752Sjkh dnsstuff.s_addr = *lp; 57128679Sbrian ms_info_req.s_addr = nbns_entries[((type - TY_PRIMARY_NBNS) ? 1 : 0)].s_addr; 57228679Sbrian if (dnsstuff.s_addr != ms_info_req.s_addr) { 57330715Sbrian memcpy(nakp, cp, 2); 57430715Sbrian memcpy(nakp+2, &ms_info_req.s_addr, length); 57528461Sbrian LogPrintf(LogIPCP, "MS NBNS req %d:%s->%s - nak\n", 57628679Sbrian type, 57728679Sbrian inet_ntoa(dnsstuff), 57828679Sbrian inet_ntoa(ms_info_req)); 57918752Sjkh nakp += length; 58018752Sjkh break; 58118752Sjkh } 58228461Sbrian LogPrintf(LogIPCP, "MS NBNS req %d:%s ok - ack\n", 58328679Sbrian type, 58428679Sbrian inet_ntoa(ms_info_req)); 58530715Sbrian memcpy(ackp, cp, length); 58618752Sjkh ackp += length; 58718752Sjkh break; 58818752Sjkh case MODE_NAK: 58928679Sbrian LogPrintf(LogIPCP, "MS NBNS req %d - NAK??\n", type); 59018752Sjkh break; 59118752Sjkh case MODE_REJ: 59228679Sbrian LogPrintf(LogIPCP, "MS NBNS req %d - REJ??\n", type); 59318752Sjkh break; 59418752Sjkh } 59518752Sjkh break; 59618752Sjkh 59726516Sbrian#endif 59818752Sjkh 5996059Samurai default: 6006059Samurai IpcpInfo.my_reject |= (1 << type); 60130715Sbrian memcpy(rejp, cp, length); 6026059Samurai rejp += length; 6036059Samurai break; 6046059Samurai } 6056059Samurai plen -= length; 6066059Samurai cp += length; 6076059Samurai } 6086059Samurai} 6096059Samurai 6106059Samuraivoid 61128679SbrianIpcpInput(struct mbuf * bp) 6126059Samurai{ 6136059Samurai FsmInput(&IpcpFsm, bp); 6146059Samurai} 615