From daniel@insu.com Thu Apr 27 14:14:55 2000 Sender: root@iNsu.COM Message-ID: <39075669.FAEB20F2@insu.com> Date: Wed, 26 Apr 2000 16:49:45 -0400 From: Daniel Shane <daniel@insu.com> X-Mailer: Mozilla 4.72 [en] (X11; U; Linux 2.2.14-5.0 i686) X-Accept-Language: en MIME-Version: 1.0 Subject: Re: New feature added to etherboot References: <20000425170804.6677127D8A@Goffman.iNsu.COM> Content-Type: multipart/mixed; boundary="------------4734FDA0BF2F2FBDF8EB8DF6" This is a multi-part message in MIME format. --------------4734FDA0BF2F2FBDF8EB8DF6 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Ok, here is a diff for etherboot 4.6.0 that adds identifiers. To test this you need to use a class in the dhcpd.conf file and also send back a string in option 208. These identifiers prevent a client from booting from other DHCP servers when you have more than 1 in your network. In will also prevent any client, except the valid ones, to use this DHCP server. Here is a subset of my dhcpd.conf : option iNdiskless-state code 208 = text; class "iNdiskless-boot" { match if substring(option iNdiskless-state,0,4) = "BOOT"; } class "iNdiskless-setup" { match if substring(option iNdiskless-state,0,5) = "SETUP"; } subnet 10.4.1.0 netmask 255.255.255.0 { pool { allow members of "iNdiskless-boot"; deny unknown clients; range 10.4.1.2 10.4.1.200; next-server 10.4.1.1; # Identify ourselves to the etherboot/DHCP client option iNdiskless-state "BOOT"; host labo01 { hardware ethernet 00:80:c8:ec:04:1b; } host labo02 { hardware ethernet 00:4f:4c:04:45:d6; } host labo03 { hardware ethernet 00:50:ba:c8:db:d6; } } pool { allow members of "iNdiskless-setup"; range 10.4.1.201 10.4.1.254; option iNdiskless-state "SETUP"; # send another kernel to setup the diskless workstation } } Daniel Shane. --------------4734FDA0BF2F2FBDF8EB8DF6 Content-Type: text/plain; charset=us-ascii; name="main.c.diff" Content-Transfer-Encoding: 7bit Content-Disposition: inline; filename="main.c.diff" --- etherboot-4.6.0/src/main.c Tue Apr 25 08:30:01 2000 +++ etherboot-4.5.6-new/src/main.c Wed Apr 26 16:17:09 2000 @@ -42,6 +42,23 @@ char *motd[RFC1533_VENDOR_NUMOFMOTD]; #ifdef IMAGE_FREEBSD int freebsd_howto = 0; #endif + +#ifdef SERVER_IDENT +#ifdef DEFAULT_SERVER_IDENT +char server_ident[9] = DEFAULT_SERVER_IDENT; +#else +char server_ident[9] = {}; +#endif +#endif + +#ifdef CLIENT_IDENT +#ifdef DEFAULT_CLIENT_IDENT +char client_ident[9] = DEFAULT_CLIENT_IDENT; +#else +char client_ident[9] = {}; +#endif +#endif + int vendorext_isvalid; char config_buffer[TFTP_MAX_PACKET+1]; /* +1 for null byte */ unsigned long netmask; @@ -63,61 +80,85 @@ char rfc1533_cookie[5] = { RFC1533_CO char rfc1533_cookie[] = { RFC1533_COOKIE}; char rfc1533_end[]={RFC1533_END }; static const char dhcpdiscover[]={ - RFC2132_MSG_TYPE,1,DHCPDISCOVER, - RFC2132_MAX_SIZE,2,2,64, - RFC2132_PARAM_LIST,4,RFC1533_NETMASK,RFC1533_GATEWAY, - RFC1533_HOSTNAME,RFC1533_EXTENSIONPATH - }; -static const char dhcprequest []={ - RFC2132_MSG_TYPE,1,DHCPREQUEST, - RFC2132_SRV_ID,4,0,0,0,0, - RFC2132_REQ_ADDR,4,0,0,0,0, - RFC2132_MAX_SIZE,2,2,64, - /* request parameters */ - RFC2132_PARAM_LIST, -#ifdef IMAGE_FREEBSD - /* 4 standard + 4 vendortags + 8 motd + 16 menu items */ - 4 + 4 + 8 + 16, + RFC2132_MSG_TYPE,1,DHCPDISCOVER, + RFC2132_MAX_SIZE,2,2,64, +#ifdef CLIENT_IDENT + RFC1533_VENDOR_CLIENT_IDENT,8,0,0,0,0,0,0,0,0, +#endif + RFC2132_PARAM_LIST, +#ifdef SERVER_IDENT + 5, #else - /* 4 standard + 3 vendortags + 8 motd + 16 menu items */ - 4 + 3 + 8 + 16, + 4, #endif - /* Standard parameters */ - RFC1533_NETMASK, RFC1533_GATEWAY, - RFC1533_HOSTNAME, RFC1533_EXTENSIONPATH, - /* Etherboot vendortags */ - RFC1533_VENDOR_MAGIC, +#ifdef SERVER_IDENT + RFC1533_VENDOR_SERVER_IDENT, +#endif + RFC1533_NETMASK, + RFC1533_GATEWAY, + RFC1533_HOSTNAME, + RFC1533_EXTENSIONPATH +}; +static const char dhcprequest []={ + RFC2132_MSG_TYPE,1,DHCPREQUEST, + RFC2132_SRV_ID,4,0,0,0,0, + RFC2132_REQ_ADDR,4,0,0,0,0, +#ifdef CLIENT_IDENT + RFC1533_VENDOR_CLIENT_IDENT,8,0,0,0,0,0,0,0,0, +#endif + RFC2132_MAX_SIZE,2,2,64, + /* request parameters */ + RFC2132_PARAM_LIST, + /* 4 standard + 3 vendortags + 8 motd + 16 menu items */ + 4 + + 3 + +#ifdef IMAGE_FREEBSD + 1 + /* One more vendortags for VENDOR_HOWTO */ +#endif +#ifdef SERVER_IDENT + 1 + /* One more vendortags for VENDOR_SERVER_IDENT */ +#endif + 8 + + 16, + /* Standard parameters */ + RFC1533_NETMASK, RFC1533_GATEWAY, + RFC1533_HOSTNAME, RFC1533_EXTENSIONPATH, + /* Etherboot vendortags */ + RFC1533_VENDOR_MAGIC, #ifdef IMAGE_FREEBSD - RFC1533_VENDOR_HOWTO, + RFC1533_VENDOR_HOWTO, #endif - RFC1533_VENDOR_MNUOPTS, RFC1533_VENDOR_SELECTION, - /* 8 MOTD entries */ - RFC1533_VENDOR_MOTD, - RFC1533_VENDOR_MOTD+1, - RFC1533_VENDOR_MOTD+2, - RFC1533_VENDOR_MOTD+3, - RFC1533_VENDOR_MOTD+4, - RFC1533_VENDOR_MOTD+5, - RFC1533_VENDOR_MOTD+6, - RFC1533_VENDOR_MOTD+7, - /* 16 image entries */ - RFC1533_VENDOR_IMG, - RFC1533_VENDOR_IMG+1, - RFC1533_VENDOR_IMG+2, - RFC1533_VENDOR_IMG+3, - RFC1533_VENDOR_IMG+4, - RFC1533_VENDOR_IMG+5, - RFC1533_VENDOR_IMG+6, - RFC1533_VENDOR_IMG+7, - RFC1533_VENDOR_IMG+8, - RFC1533_VENDOR_IMG+9, - RFC1533_VENDOR_IMG+10, - RFC1533_VENDOR_IMG+11, - RFC1533_VENDOR_IMG+12, - RFC1533_VENDOR_IMG+13, - RFC1533_VENDOR_IMG+14, - RFC1533_VENDOR_IMG+15, - }; +#ifdef SERVER_IDENT + RFC1533_VENDOR_SERVER_IDENT, +#endif + RFC1533_VENDOR_MNUOPTS, RFC1533_VENDOR_SELECTION, + /* 8 MOTD entries */ + RFC1533_VENDOR_MOTD, + RFC1533_VENDOR_MOTD+1, + RFC1533_VENDOR_MOTD+2, + RFC1533_VENDOR_MOTD+3, + RFC1533_VENDOR_MOTD+4, + RFC1533_VENDOR_MOTD+5, + RFC1533_VENDOR_MOTD+6, + RFC1533_VENDOR_MOTD+7, + /* 16 image entries */ + RFC1533_VENDOR_IMG, + RFC1533_VENDOR_IMG+1, + RFC1533_VENDOR_IMG+2, + RFC1533_VENDOR_IMG+3, + RFC1533_VENDOR_IMG+4, + RFC1533_VENDOR_IMG+5, + RFC1533_VENDOR_IMG+6, + RFC1533_VENDOR_IMG+7, + RFC1533_VENDOR_IMG+8, + RFC1533_VENDOR_IMG+9, + RFC1533_VENDOR_IMG+10, + RFC1533_VENDOR_IMG+11, + RFC1533_VENDOR_IMG+12, + RFC1533_VENDOR_IMG+13, + RFC1533_VENDOR_IMG+14, + RFC1533_VENDOR_IMG+15, +}; #endif /* NO_DHCP_SUPPORT */ static const char broadcast[] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF }; @@ -176,6 +217,55 @@ done: break; } #endif + +#ifdef SHIFTED_IDENT_INPUT + if (getshift() & 3) + { +#endif + +#ifdef CLIENT_IDENT +# ifdef ASK_CLIENT_IDENT + { + char tmp_ident[9] = {}; +# ifdef DEFAULT_CLIENT_IDENT + printf("Enter the client identifier (8 char max.) default [%s] : ",client_ident); +# else + printf("Enter the client identifier (8 char max.) : "); +# endif + getstr(tmp_ident,8); + if (strlen(tmp_ident) != 0) + memcpy(client_ident,tmp_ident,8); + else + printf("%s",client_ident); + putchar('\n'); + } +# endif +#endif + +#ifdef SERVER_IDENT +# ifdef ASK_SERVER_IDENT + { + char tmp_ident[9] = {}; +# ifdef DEFAULT_SERVER_IDENT + printf("Enter the server identifier (8 char max.) default [%s] : ",server_ident); +# else + printf("Enter the server identifier (8 char max.) : "); +# endif + getstr(tmp_ident,8); + if (strlen(tmp_ident) != 0) + memcpy(server_ident,tmp_ident,8); + else + printf("%s",server_ident); + putchar('\n'); + } +# endif +#endif + +#ifdef SHIFTED_IDENT_INPUT + } +#endif + + print_config(); #if (TRY_FLOPPY_FIRST > 0) && defined(FLOPPY) disk_init(); printf("Trying floppy"); @@ -188,7 +278,7 @@ done: } printf("no floppy\n"); #endif /* TRY_FLOPPY_FIRST && FLOPPY */ - print_config(); + print_config(); gateA20_set(); #ifdef EMERGENCYDISKBOOT if (!eth_probe()) { @@ -663,6 +753,8 @@ BOOTP - Get my IP address and load infor int bootp() { int retry; + int offset = 0; + #ifndef NO_DHCP_SUPPORT int retry1; #endif /* NO_DHCP_SUPPORT */ @@ -680,11 +772,18 @@ int bootp() bp.bp_xid = xid = starttime = currticks(); memcpy(bp.bp_hwaddr, arptable[ARP_CLIENT].node, ETHER_ADDR_SIZE); #ifdef NO_DHCP_SUPPORT - memcpy(bp.bp_vend, rfc1533_cookie, 5); /* request RFC-style options */ + memcpy(bp.bp_vend+offset, rfc1533_cookie, 5); /* request RFC-style options */ + offset += sizeof rfc1533_cookie; #else - memcpy(bp.bp_vend, rfc1533_cookie, sizeof rfc1533_cookie); /* request RFC-style options */ - memcpy(bp.bp_vend+sizeof rfc1533_cookie, dhcpdiscover, sizeof dhcpdiscover); - memcpy(bp.bp_vend+sizeof rfc1533_cookie +sizeof dhcpdiscover, rfc1533_end, sizeof rfc1533_end); + memcpy(bp.bp_vend+offset, rfc1533_cookie, sizeof rfc1533_cookie); /* request RFC-style options */ + offset += sizeof rfc1533_cookie; + memcpy(bp.bp_vend+offset, dhcpdiscover, sizeof dhcpdiscover); + offset += sizeof dhcpdiscover; +#ifdef CLIENT_IDENT + memcpy(bp.bp_vend+13, client_ident, strlen(client_ident)); +#endif + memcpy(bp.bp_vend+offset, rfc1533_end, sizeof rfc1533_end); + offset += sizeof rfc1533_end; #endif /* NO_DHCP_SUPPORT */ for (retry = 0; retry < MAX_BOOTP_RETRIES; ) { @@ -715,19 +814,22 @@ int bootp() #else if (await_reply(AWAIT_BOOTP, 0, NULL, TIMEOUT)){ if (dhcp_reply==DHCPOFFER){ - dhcp_reply=0; - memcpy(bp.bp_vend, rfc1533_cookie, sizeof rfc1533_cookie); - memcpy(bp.bp_vend+sizeof rfc1533_cookie, dhcprequest, sizeof dhcprequest); - memcpy(bp.bp_vend+sizeof rfc1533_cookie +sizeof dhcprequest, rfc1533_end, sizeof rfc1533_end); - memcpy(bp.bp_vend+9, &dhcp_server, sizeof(in_addr)); - memcpy(bp.bp_vend+15, &dhcp_addr, sizeof(in_addr)); - for (retry1 = 0; retry1 < MAX_BOOTP_RETRIES;) { - udp_transmit(IP_BROADCAST, 0, BOOTP_SERVER, - sizeof(struct bootp_t), &bp); dhcp_reply=0; - if (await_reply(AWAIT_BOOTP, 0, NULL, TIMEOUT)) - if (dhcp_reply==DHCPACK) - return(1); + memcpy(bp.bp_vend, rfc1533_cookie, sizeof rfc1533_cookie); + memcpy(bp.bp_vend+sizeof rfc1533_cookie, dhcprequest, sizeof dhcprequest); + memcpy(bp.bp_vend+sizeof rfc1533_cookie +sizeof dhcprequest, rfc1533_end, sizeof rfc1533_end); + memcpy(bp.bp_vend+9, &dhcp_server, sizeof(in_addr)); + memcpy(bp.bp_vend+15, &dhcp_addr, sizeof(in_addr)); +#ifdef CLIENT_IDENT + memcpy(bp.bp_vend+21, client_ident, strlen(client_ident)); +#endif + for (retry1 = 0; retry1 < MAX_BOOTP_RETRIES;) { + udp_transmit(IP_BROADCAST, 0, BOOTP_SERVER, + sizeof(struct bootp_t), &bp); + dhcp_reply=0; + if (await_reply(AWAIT_BOOTP, 0, NULL, TIMEOUT)) + if (dhcp_reply==DHCPACK) + return(1); rfc951_sleep(++retry1); } } else @@ -750,6 +852,7 @@ AWAIT_REPLY - Wait until we get a respon **************************************************************************/ int await_reply(int type, int ival, void *ptr, int timeout) { + int result; unsigned long time; struct iphdr *ip; struct udphdr *udp; @@ -757,6 +860,7 @@ int await_reply(int type, int ival, void struct bootp_t *bootpreply; struct rpc_t *rpc; unsigned short ptype; + unsigned int min_packetlen; unsigned int protohdrlen = ETHER_HDR_SIZE + sizeof(struct iphdr) + sizeof(struct udphdr); @@ -766,35 +870,35 @@ int await_reply(int type, int ival, void * needs a negligible amount of time. */ for (;;) { if (eth_poll()) { /* We have something! */ - /* Check for ARP - No IP hdr */ + /* Check for ARP - No IP hdr */ if (nic.packetlen >= ETHER_HDR_SIZE) { ptype = ((unsigned short) nic.packet[12]) << 8 | ((unsigned short) nic.packet[13]); } else continue; /* what else could we do with it? */ if ((nic.packetlen >= ETHER_HDR_SIZE + - sizeof(struct arprequest)) && - (ptype == ARP) ) { + sizeof(struct arprequest)) && + (ptype == ARP) ) { unsigned long tmp; - + arpreply = (struct arprequest *) &nic.packet[ETHER_HDR_SIZE]; if ((arpreply->opcode == ntohs(ARP_REPLY)) && - !memcmp(arpreply->sipaddr, ptr, sizeof(in_addr)) && - (type == AWAIT_ARP)) { + !memcmp(arpreply->sipaddr, ptr, sizeof(in_addr)) && + (type == AWAIT_ARP)) { memcpy(arptable[ival].node, arpreply->shwaddr, ETHER_ADDR_SIZE); return(1); } memcpy(&tmp, arpreply->tipaddr, sizeof(in_addr)); if ((arpreply->opcode == ntohs(ARP_REQUEST)) && - (tmp == arptable[ARP_CLIENT].ipaddr.s_addr)) { + (tmp == arptable[ARP_CLIENT].ipaddr.s_addr)) { arpreply->opcode = htons(ARP_REPLY); memcpy(arpreply->tipaddr, arpreply->sipaddr, sizeof(in_addr)); memcpy(arpreply->thwaddr, arpreply->shwaddr, ETHER_ADDR_SIZE); memcpy(arpreply->sipaddr, &arptable[ARP_CLIENT].ipaddr, sizeof(in_addr)); memcpy(arpreply->shwaddr, arptable[ARP_CLIENT].node, ETHER_ADDR_SIZE); eth_transmit(arpreply->thwaddr, ARP, - sizeof(struct arprequest), - arpreply); + sizeof(struct arprequest), + arpreply); #ifdef MDEBUG memcpy(&tmp, arpreply->tipaddr, sizeof(in_addr)); printf("Sent ARP reply to: %I\n",tmp); @@ -802,20 +906,20 @@ int await_reply(int type, int ival, void } continue; } - + if (type == AWAIT_QDRAIN) { continue; } - - /* Check for RARP - No IP hdr */ + + /* Check for RARP - No IP hdr */ if ((type == AWAIT_RARP) && - (nic.packetlen >= ETHER_HDR_SIZE + - sizeof(struct arprequest)) && - (ptype == RARP)) { + (nic.packetlen >= ETHER_HDR_SIZE + + sizeof(struct arprequest)) && + (ptype == RARP)) { arpreply = (struct arprequest *) &nic.packet[ETHER_HDR_SIZE]; if ((arpreply->opcode == ntohs(RARP_REPLY)) && - !memcmp(arpreply->thwaddr, ptr, ETHER_ADDR_SIZE)) { + !memcmp(arpreply->thwaddr, ptr, ETHER_ADDR_SIZE)) { memcpy(arptable[ARP_SERVER].node, arpreply->shwaddr, ETHER_ADDR_SIZE); memcpy(& arptable[ARP_SERVER].ipaddr, arpreply->sipaddr, sizeof(in_addr)); memcpy(& arptable[ARP_CLIENT].ipaddr, arpreply->tipaddr, sizeof(in_addr)); @@ -823,64 +927,72 @@ int await_reply(int type, int ival, void } continue; } - - /* Anything else has IP header */ + + /* Anything else has IP header */ if ((nic.packetlen < protohdrlen) || - (ptype != IP) ) continue; + (ptype != IP) ) continue; ip = (struct iphdr *)&nic.packet[ETHER_HDR_SIZE]; if ((ip->verhdrlen != 0x45) || - ipchksum((unsigned short *)ip, sizeof(struct iphdr)) || - (ip->protocol != IP_UDP)) continue; + ipchksum((unsigned short *)ip, sizeof(struct iphdr)) || + (ip->protocol != IP_UDP)) continue; udp = (struct udphdr *)&nic.packet[ETHER_HDR_SIZE + - sizeof(struct iphdr)]; - - /* BOOTP ? */ + sizeof(struct iphdr)]; + + /* BOOTP ? */ bootpreply = (struct bootp_t *)&nic.packet[ETHER_HDR_SIZE]; - if ((type == AWAIT_BOOTP) && - (nic.packetlen >= (ETHER_HDR_SIZE + -#ifdef NO_DHCP_SUPPORT - sizeof(struct bootp_t))) && +#ifdef NO_DHCP_SUPPORT + min_packetlen = ETHER_HDR_SIZE + sizeof(struct bootp_t); #else - sizeof(struct bootp_t))-DHCP_OPT_LEN) && -#endif /* NO_DHCP_SUPPORT */ - (ntohs(udp->dest) == BOOTP_CLIENT) && - (bootpreply->bp_op == BOOTP_REPLY) && - (bootpreply->bp_xid == xid)) { - arptable[ARP_CLIENT].ipaddr.s_addr = - bootpreply->bp_yiaddr.s_addr; + min_packetlen = ETHER_HDR_SIZE + sizeof(struct bootp_t) - DHCP_OPT_LEN; +#endif + if ( + (type == AWAIT_BOOTP) && + (nic.packetlen >= min_packetlen) && + (ntohs(udp->dest) == BOOTP_CLIENT) && + (bootpreply->bp_op == BOOTP_REPLY) && + (bootpreply->bp_xid == xid) + ) { + arptable[ARP_CLIENT].ipaddr.s_addr = bootpreply->bp_yiaddr.s_addr; #ifndef NO_DHCP_SUPPORT dhcp_addr.s_addr = bootpreply->bp_yiaddr.s_addr; #endif /* NO_DHCP_SUPPORT */ netmask = default_netmask(); - arptable[ARP_SERVER].ipaddr.s_addr = - bootpreply->bp_siaddr.s_addr; + arptable[ARP_SERVER].ipaddr.s_addr = bootpreply->bp_siaddr.s_addr; memset(arptable[ARP_SERVER].node, 0, ETHER_ADDR_SIZE); /* Kill arp */ - arptable[ARP_GATEWAY].ipaddr.s_addr = - bootpreply->bp_giaddr.s_addr; + arptable[ARP_GATEWAY].ipaddr.s_addr = bootpreply->bp_giaddr.s_addr; memset(arptable[ARP_GATEWAY].node, 0, ETHER_ADDR_SIZE); /* Kill arp */ if (bootpreply->bp_file[0]) { memcpy(kernel_buf, bootpreply->bp_file, 128); kernel = kernel_buf; } memcpy((char *)BOOTP_DATA_ADDR, (char *)bootpreply, sizeof(struct bootpd_t)); - decode_rfc1533(BOOTP_DATA_ADDR->bootp_reply.bp_vend, -#ifdef NO_DHCP_SUPPORT - 0, BOOTP_VENDOR_LEN + - MAX_BOOTP_EXTLEN, 1); -#else - 0, DHCP_OPT_LEN, 1); -#endif /* NO_DHCP_SUPPORT */ - return(1); +#ifdef NO_DHCP_SUPPORT + if (decode_rfc1533(BOOTP_DATA_ADDR->bootp_reply.bp_vend, + 0, BOOTP_VENDOR_LEN + + MAX_BOOTP_EXTLEN, 1)) { + return(1); + } + else { + continue; + } +#else + if (decode_rfc1533(BOOTP_DATA_ADDR->bootp_reply.bp_vend, + 0, DHCP_OPT_LEN, 1)) { + return(1); + } + else { + continue; + } } - +#endif /* NO_DHCP_SUPPORT */ #ifdef DOWNLOAD_PROTO_TFTP - /* TFTP ? */ + /* TFTP ? */ if ((type == AWAIT_TFTP) && - (ntohs(udp->dest) == ival)) return(1); + (ntohs(udp->dest) == ival)) return(1); #endif /* DOWNLOAD_PROTO_TFTP */ - + #ifdef DOWNLOAD_PROTO_NFS - /* RPC ? */ + /* RPC ? */ rpc = (struct rpc_t *)&nic.packet[ETHER_HDR_SIZE]; if ((type == AWAIT_RPC) && (ntohs(udp->dest) == ival) && @@ -889,19 +1001,19 @@ int await_reply(int type, int ival, void return (1); } #endif /* DOWNLOAD_PROTO_NFS */ - + } else { - /* Check for abort key only if the Rx queue is empty - - * as long as we have something to process, don't - * assume that something failed. It is unlikely that - * we have no processing time left between packets. */ + /* Check for abort key only if the Rx queue is empty - + * as long as we have something to process, don't + * assume that something failed. It is unlikely that + * we have no processing time left between packets. */ if (iskey() && (getchar() == ESC)) #ifdef EMERGENCYDISKBOOT exit(0); #else - longjmp(jmp_bootmenu,1); + longjmp(jmp_bootmenu,1); #endif - /* Do the timeout after at least a full queue walk. */ + /* Do the timeout after at least a full queue walk. */ if ((timeout == 0) || (currticks() > time)) { break; } @@ -914,13 +1026,15 @@ int await_reply(int type, int ival, void DECODE_RFC1533 - Decodes RFC1533 header **************************************************************************/ int decode_rfc1533(p, block, len, eof) - register unsigned char *p; - int block, len, eof; + register unsigned char *p; + int block, len, eof; { static unsigned char *extdata = NULL, *extend = NULL; unsigned char *extpath = NULL; unsigned char *endp; - +#ifdef SERVER_IDENT + char rcvd_server_ident[9] = {}; +#endif if (block == 0) { #ifdef IMAGE_MENU memset(imagelist, 0, sizeof(imagelist)); @@ -1002,11 +1116,16 @@ int decode_rfc1533(p, block, len, eof) } #endif #ifdef MOTD - else if (c >= RFC1533_VENDOR_MOTD && + else if (c >= RFC1533_VENDOR_MOTD && c < RFC1533_VENDOR_MOTD + RFC1533_VENDOR_NUMOFMOTD) motd[c - RFC1533_VENDOR_MOTD] = p; #endif +#ifdef SERVER_IDENT + else if (c == RFC1533_VENDOR_SERVER_IDENT) { + memcpy(rcvd_server_ident,p+2,TAG_LEN(p)); + } +#endif else { #if 0 unsigned char *q; @@ -1018,6 +1137,30 @@ int decode_rfc1533(p, block, len, eof) } p += TAG_LEN(p) + 2; } +#if defined(SERVER_IDENT) && defined(DBG_IDENT) + if (strcasecmp(rcvd_server_ident,server_ident)) { + char ip[16]; + + inet_ntoa(dhcp_server,ip); + printf("[%s]: Option %d (%s), invalid response. Wanted (%s).\n", + ip, + RFC1533_VENDOR_SERVER_IDENT, + rcvd_server_ident, + server_ident); + strcpy(rcvd_server_ident,""); + return(0); + } + else { + char ip[16]; + + inet_ntoa(dhcp_server,ip); + printf("[%s]: Option %d (%s), valid response.\n", + ip, + RFC1533_VENDOR_SERVER_IDENT, + rcvd_server_ident); + strcpy(rcvd_server_ident,""); + } +#endif extdata = extend = endp; if (block == 0 && extpath != NULL) { char fname[64]; @@ -1103,3 +1246,4 @@ void cleanup(void) * c-basic-offset: 8 * End: */ + --------------4734FDA0BF2F2FBDF8EB8DF6 Content-Type: text/plain; charset=us-ascii; name="misc.c.diff" Content-Transfer-Encoding: 7bit Content-Disposition: inline; filename="misc.c.diff" --- etherboot-4.6.0/src/misc.c Tue Apr 25 08:30:25 2000 +++ etherboot-4.5.6-new/src/misc.c Wed Apr 26 16:26:38 2000 @@ -140,9 +140,11 @@ void printf(const char *fmt, ...) #ifdef IMAGE_MENU /************************************************************************** -INET_ATON - Convert an ascii x.x.x.x to binary form +INET_NTOA - Convert an ascii x.x.x.x to binary form **************************************************************************/ -int inet_aton(char *p, in_addr *i) +int inet_aton(p, i) + char *p; + in_addr *i; { unsigned long ip = 0; int val; @@ -165,7 +167,19 @@ int inet_aton(char *p, in_addr *i) #endif /* IMAGE_MENU */ -int getdec(char **ptr) +#if defined(CLIENT_IDENT) || defined (SERVER_IDENT) +/************************************************************************** +INET_NTOA - Convert a binary form to an ascii x.x.x.x form +**************************************************************************/ +char *inet_ntoa(in_addr i, char *p) +{ + sprintf(p,"%d.%d.%d.%d",i.s_addr>>24,i.s_addr<<8>>24,i.s_addr<<16>>24,i.s_addr<<24>>24); + return p; +} +#endif + +int getdec(ptr) + char **ptr; { char *p = *ptr; int ret=0; @@ -308,6 +322,45 @@ iskey(void) return 0; } #endif /* ETHERBOOT32 */ + +/************************************************************************** +GETSTR - Read a string of size bytes from the keyboard +(without echoing the final return) +**************************************************************************/ +void getstr(char *s, int size) +{ + int i=0; + char c; + + while(1) { + c = getc(); + + + if (c == 13) + { + s[i]='\0'; + break; + } + else if ( + ((c >= 'a') && (c <='z')) || + ((c >= 'A') && (c <='Z')) || + ((c >= '0') && (c <='9')) + ) { + if (i==8) { + putchar(8); + putchar(s[i-1]=c); + } + else + putchar(s[i++]=c); + } + else if ( c == 8 ) { + if (i != 0) { + --i; + s[i]='\0'; + putchar(8); + putchar(32); + putchar(8); + } + } + } +} /* * Local variables: --------------4734FDA0BF2F2FBDF8EB8DF6 Content-Type: text/plain; charset=us-ascii; name="Config.diff" Content-Transfer-Encoding: 7bit Content-Disposition: inline; filename="Config.diff" --- etherboot-4.6.0/src/Config Tue Apr 25 08:30:57 2000 +++ etherboot-4.5.6-new/src/Config Wed Apr 26 15:55:57 2000 @@ -59,6 +59,27 @@ # may no longer be appropriate. You might need to set # MAX_ARP_RETRIES, MAX_BOOTP_RETRIES, MAX_TFTP_RETRIES # and MAX_RPC_RETRIES to a larger value. +# -DDEFAULT_CLIENT_IDENT +# The default client identifier that is sent to the +# DHCP server to identify itself. +# -DDEFAULT_SERVER_IDENT +# The expected response that the client will wait +# for when a DHCP server responds to the the initial +# client discovery. +# -DASK_CLIENT_IDENT +# -DASK_SERVER_IDENT +# If these are set, the boot process will include +# a question period where you can manualy specify +# the client and/or server identifiers. +# -DSHIFTED_IDENT_INPUT +# If this is set then the boot process will only +# ask for the identifiers if one of the shift keys +# is pressed. Else it will send the default identifiers +# automatically +# -DDBG_IDENT +# This will give show all the DHCP responses with +# their identifiers. +# # # Etherboot/32 only options: # -DAOUT_IMAGE - Add a.out kernel boot support (generic) @@ -147,6 +168,14 @@ CFLAGS32+= -DASK_BOOT=3 -DANS_DEFAULT=AN # Change download protocol to NFS. Only available for Etherboot/32 for now. # CFLAGS32+= -DDOWNLOAD_PROTO_NFS + +# If you have more than one DHCP server you might want to +# enable these to be able to sort out which one you want to +# respond to. +CFLAGS32+= -DDEFAULT_CLIENT_IDENT=\"BOOT\" -DDEFAULT_SERVER_IDENT=\"BOOT\" +CFLAGS32+= -DASK_CLIENT_IDENT -DASK_SERVER_IDENT +CFLAGS32+= -DSHIFTED_IDENT_INPUT +CFLAGS32+= -DDBG_IDENT # These flags affect the loader that is prepended to the Etherboot image LCONFIG+= -DMOVEROM --------------4734FDA0BF2F2FBDF8EB8DF6 Content-Type: text/plain; charset=us-ascii; name="etherboot.h.diff" Content-Transfer-Encoding: 7bit Content-Disposition: inline; filename="etherboot.h.diff" --- etherboot-4.6.0/src/etherboot.h Tue Apr 25 08:30:55 2000 +++ etherboot-4.5.6-new/src/etherboot.h Wed Apr 26 16:07:16 2000 @@ -8,6 +8,14 @@ Author: Martin Renters #include "osdep.h" +#if (! defined(NO_DHCP_SUPPORT)) && (defined(ASK_CLIENT_IDENT) || defined(DEFAULT_CLIENT_IDENT)) +# define CLIENT_IDENT +#endif + +#if (! defined(NO_DHCP_SUPPORT)) && (defined(ASK_SERVER_IDENT) || defined(DEFAULT_SERVER_IDENT)) +# define SERVER_IDENT +#endif + /* These could be customised for different languages perhaps */ #define ASK_PROMPT "Boot from (N)etwork or from (L)ocal? " #define ANS_NETWORK 'N' @@ -224,6 +232,12 @@ Author: Martin Renters #ifdef IMAGE_FREEBSD #define RFC1533_VENDOR_HOWTO 132 #endif +#ifdef CLIENT_IDENT +#define RFC1533_VENDOR_CLIENT_IDENT 208 +#endif +#ifdef SERVER_IDENT +#define RFC1533_VENDOR_SERVER_IDENT 208 +#endif #define RFC1533_VENDOR_MNUOPTS 160 #define RFC1533_VENDOR_SELECTION 176 #define RFC1533_VENDOR_MOTD 184 @@ -477,11 +491,13 @@ extern int getdec P((char **)); extern void printf P((const char *, ...)); extern char *sprintf P((char *, const char *, ...)); extern int inet_aton P((char *p, in_addr *i)); +extern char *inet_ntoa P((in_addr i, char *p)); extern void gateA20_set P((void)); extern void gateA20_unset P((void)); extern void putchar P((int)); extern int getchar P((void)); extern int iskey P((void)); +extern void getstr P((char *s, int size)); /* start*.S */ extern int getc P((void)); @@ -528,8 +544,10 @@ extern int hostnamelen; extern unsigned long netmask; extern int jmp_bootmenu[10]; extern struct arptable_t arptable[MAX_ARP]; -#ifdef IMAGE_MENU +#ifdef MOTD extern char *motd[RFC1533_VENDOR_NUMOFMOTD]; +#endif +#ifdef IMAGE_MENU extern int menutmo,menudefault; extern unsigned char *defparams; extern int defparams_max; --------------4734FDA0BF2F2FBDF8EB8DF6--