int
tftp_open(char *path, struct open_file *f)
{
struct tftp_handle *tftpfile;
struct iodesc *io;
int res;
tftpfile = (struct tftp_handle *) alloc(sizeof(*tftpfile));
if (tftpfile == NULL)
return ENOMEM;
tftpfile->iodesc = io = socktodesc(*(int *) (f->f_devdata));
io->destip = servip;
tftpfile->off = 0;
tftpfile->path = path; /* XXXXXXX we hope it's static */
res = tftp_makereq(tftpfile);
if (res) {
free(tftpfile, sizeof(*tftpfile));
return res;
}
f->f_fsdata = (void *) tftpfile;
return 0;
}
/*
* nfs_mount - mount this nfs filesystem to a host
* On error, return non-zero and set errno.
*/
int
nfs_mount(int sock, struct in_addr ip, char *path)
{
struct iodesc *desc;
struct nfsv2_fattrs *fa;
if (!(desc = socktodesc(sock))) {
errno = EINVAL;
return(-1);
}
/* Bind to a reserved port. */
desc->myport = htons(--rpc_port);
desc->destip = ip;
if (nfs_getrootfh(desc, path, nfs_root_node.fh))
return (-1);
nfs_root_node.iodesc = desc;
/* Fake up attributes for the root dir. */
fa = &nfs_root_node.fa;
fa->fa_type = htonl(NFDIR);
fa->fa_mode = htonl(0755);
fa->fa_nlink = htonl(2);
#ifdef NFS_DEBUG
if (debug)
printf("nfs_mount: got fh for %s\n", path);
#endif
return(0);
}
int
net_open(struct open_file *f, ...)
{
char *fname;
char **file;
struct iodesc *s;
va_list ap;
va_start(ap, f);
fname = va_arg(ap, char *);
file = va_arg(ap, char **);
va_end(ap);
f->f_devdata = &netdev_sock;
netdev_sock = netif_open(NULL);
bootfile[0] = '\0';
if (bootopts.b_flags & B_F_USE_BOOTP) {
s = socktodesc(netdev_sock);
bootp(netdev_sock);
if (fname[0] != '\0')
strlcpy(bootfile, fname, sizeof bootfile);
} else {
s = socktodesc(netdev_sock);
servip = s->destip = bootopts.b_remote_ip;
myip = s->myip = bootopts.b_local_ip;
netmask = bootopts.b_netmask;
gateip = bootopts.b_gate_ip;
if (fname[0] == '\0') {
printf("no boot filename\n");
netif_close(netdev_sock);
return EIO;
}
strlcpy(bootfile, fname, sizeof bootfile);
}
*file = bootfile;
return 0;
}
/* Fetch required bootp information */
void
bootp(int sock)
{
struct iodesc *d;
struct bootp *bp;
struct {
u_char header[HEADER_SIZE];
struct bootp wbootp;
} wbuf;
struct {
u_char header[HEADER_SIZE];
struct bootp rbootp;
} rbuf;
#ifdef BOOTP_DEBUG
if (debug)
printf("bootp: socket=%d\n", sock);
#endif
if (!bot)
bot = getsecs();
if (!(d = socktodesc(sock))) {
printf("bootp: bad socket. %d\n", sock);
return;
}
#ifdef BOOTP_DEBUG
if (debug)
printf("bootp: d=%x\n", (u_int)d);
#endif
bp = &wbuf.wbootp;
bzero(bp, sizeof(*bp));
bp->bp_op = BOOTREQUEST;
bp->bp_htype = HTYPE_ETHERNET; /* 10Mb Ethernet (48 bits) */
bp->bp_hlen = 6;
bp->bp_xid = htonl(d->xid);
MACPY(d->myea, bp->bp_chaddr);
bzero(bp->bp_file, sizeof(bp->bp_file));
bcopy(vm_rfc1048, bp->bp_vend, sizeof(vm_rfc1048));
d->myip = myip;
d->myport = htons(IPPORT_BOOTPC);
d->destip.s_addr = INADDR_BROADCAST;
d->destport = htons(IPPORT_BOOTPS);
(void)sendrecv(d,
bootpsend, bp, sizeof(*bp),
bootprecv, &rbuf.rbootp, sizeof(rbuf.rbootp));
/* Bump xid so next request will be unique. */
++d->xid;
}
static int
tftp_open(const char *path, struct open_file *f)
{
struct tftp_handle *tftpfile;
struct iodesc *io;
int res;
if (strcmp(f->f_dev->dv_name, "net") != 0) {
#ifdef __i386__
if (strcmp(f->f_dev->dv_name, "pxe") != 0)
return (EINVAL);
#else
return (EINVAL);
#endif
}
if (is_open)
return (EBUSY);
tftpfile = (struct tftp_handle *) malloc(sizeof(*tftpfile));
if (!tftpfile)
return (ENOMEM);
memset(tftpfile, 0, sizeof(*tftpfile));
tftpfile->tftp_blksize = TFTP_REQUESTED_BLKSIZE;
tftpfile->iodesc = io = socktodesc(*(int *) (f->f_devdata));
if (io == NULL)
return (EINVAL);
io->destip = servip;
tftpfile->off = 0;
tftpfile->path = strdup(path);
if (tftpfile->path == NULL) {
free(tftpfile);
return(ENOMEM);
}
res = tftp_makereq(tftpfile);
if (res) {
free(tftpfile->path);
free(tftpfile);
return (res);
}
f->f_fsdata = (void *) tftpfile;
is_open = 1;
return (0);
}
static int
tftp_open(const char *path, struct open_file *f)
{
struct tftp_handle *tftpfile;
struct iodesc *io;
int res;
/* Avoid trying out tftp_open for disk devices in the EFI loader */
#ifndef __i386__
if (strcmp(f->f_dev->dv_name, "net") != 0)
return (EINVAL);
#endif
tftpfile = (struct tftp_handle *) malloc(sizeof(*tftpfile));
if (!tftpfile)
return (ENOMEM);
tftpfile->iodesc = io = socktodesc(*(int *) (f->f_devdata));
if (io == NULL) {
free(tftpfile);
return (EINVAL);
}
io->destip = servip;
tftpfile->off = 0;
tftpfile->path = strdup(path);
if (tftpfile->path == NULL) {
free(tftpfile);
return(ENOMEM);
}
res = tftp_makereq(tftpfile);
if (res) {
free(tftpfile->path);
free(tftpfile);
return (res);
}
f->f_fsdata = (void *) tftpfile;
return (0);
}
/*
* Called by devopen after it sets f->f_dev to our devsw entry.
* This opens the low-level device and sets f->f_devdata.
* This is declared with variable arguments...
*/
static int
net_open(struct open_file *f, ...)
{
char temp[FNAME_SIZE];
struct iodesc *d;
va_list args;
char *devname; /* Device part of file name (or NULL). */
int error = 0;
va_start(args, f);
devname = va_arg(args, char*);
va_end(args);
#ifdef NETIF_OPEN_CLOSE_ONCE
/* Before opening another interface, close the previous one first. */
if (netdev_sock >= 0 && strcmp(devname, netdev_name) != 0)
net_cleanup();
#endif
/* On first open, do netif open, mount, etc. */
if (netdev_opens == 0) {
/* Find network interface. */
if (netdev_sock < 0) {
netdev_sock = netif_open(devname);
if (netdev_sock < 0) {
printf("net_open: netif_open() failed\n");
return (ENXIO);
}
netdev_name = strdup(devname);
#ifdef NETIF_DEBUG
if (debug)
printf("net_open: netif_open() succeeded\n");
#endif
}
/*
* If network params were not set by netif_open(), try to get
* them via bootp, rarp, etc.
*/
if (rootip.s_addr == 0) {
/* Get root IP address, and path, etc. */
error = net_getparams(netdev_sock);
if (error) {
/* getparams makes its own noise */
free(netdev_name);
netif_close(netdev_sock);
netdev_sock = -1;
return (error);
}
}
/*
* Set the variables required by the kernel's nfs_diskless
* mechanism. This is the minimum set of variables required to
* mount a root filesystem without needing to obtain additional
* info from bootp or other sources.
*/
d = socktodesc(netdev_sock);
sprintf(temp, "%6D", d->myea, ":");
setenv("boot.netif.hwaddr", temp, 1);
setenv("boot.netif.ip", inet_ntoa(myip), 1);
setenv("boot.netif.netmask", intoa(netmask), 1);
setenv("boot.netif.gateway", inet_ntoa(gateip), 1);
setenv("boot.nfsroot.server", inet_ntoa(rootip), 1);
setenv("boot.nfsroot.path", rootpath, 1);
}
netdev_opens++;
f->f_devdata = &netdev_sock;
return (error);
}
int
netmountroot(struct open_file *f, char *devname)
{
int error;
struct iodesc *d;
#ifdef DEBUG
printf("netmountroot: %s\n", devname);
#endif
if (netio_ask) {
get_my_ip:
printf("My IP address? ");
bzero(input_line, sizeof(input_line));
gets(input_line);
if ((myip.s_addr = inet_addr(input_line)) ==
htonl(INADDR_NONE)) {
printf("invalid IP address: %s\n", input_line);
goto get_my_ip;
}
get_my_netmask:
printf("My netmask? ");
bzero(input_line, sizeof(input_line));
gets(input_line);
if ((netmask = inet_addr(input_line)) ==
htonl(INADDR_NONE)) {
printf("invalid netmask: %s\n", input_line);
goto get_my_netmask;
}
get_my_gateway:
printf("My gateway? ");
bzero(input_line, sizeof(input_line));
gets(input_line);
if ((gateip.s_addr = inet_addr(input_line)) ==
htonl(INADDR_NONE)) {
printf("invalid IP address: %s\n", input_line);
goto get_my_gateway;
}
get_server_ip:
printf("Server IP address? ");
bzero(input_line, sizeof(input_line));
gets(input_line);
if ((rootip.s_addr = inet_addr(input_line)) ==
htonl(INADDR_NONE)) {
printf("invalid IP address: %s\n", input_line);
goto get_server_ip;
}
get_server_path:
printf("Server path? ");
bzero(rootpath, sizeof(rootpath));
gets(rootpath);
if (rootpath[0] == '\0' || rootpath[0] == '\n')
goto get_server_path;
if ((d = socktodesc(netdev_sock)) == NULL)
return (EMFILE);
d->myip = myip;
goto do_nfs_mount;
}
/*
* Get info for NFS boot: our IP address, our hostname,
* server IP address, and our root path on the server.
* There are two ways to do this: The old, Sun way,
* and the more modern, BOOTP way. (RFC951, RFC1048)
*/
#ifdef SUN_BOOTPARAMS
/* Get boot info using RARP and Sun bootparams. */
/* Get our IP address. (rarp.c) */
if (rarp_getipaddress(netdev_sock) == -1)
return (errno);
printf("boot: client IP address: %s\n", inet_ntoa(myip));
/* Get our hostname, server IP address. */
if (bp_whoami(netdev_sock))
return (errno);
printf("boot: client name: %s\n", hostname);
/* Get the root pathname. */
if (bp_getfile(netdev_sock, "root", &rootip, rootpath))
return (errno);
#else
/* Get boot info using BOOTP way. (RFC951, RFC1048) */
bootp(netdev_sock);
printf("Using IP address: %s\n", inet_ntoa(myip));
printf("myip: %s (%s)", hostname, inet_ntoa(myip));
if (gateip)
printf(", gateip: %s", inet_ntoa(gateip));
if (mask)
printf(", mask: %s", intoa(netmask));
printf("\n");
#endif /* SUN_BOOTPARAMS */
printf("root addr=%s path=%s\n", inet_ntoa(rootip), rootpath);
do_nfs_mount:
/* Get the NFS file handle (mount). */
error = nfs_mount(netdev_sock, rootip, rootpath);
return (error);
}
/* Fetch required bootp infomation */
void
bootp(int sock, int flag)
{
struct iodesc *d;
struct bootp *bp;
struct {
u_char header[HEADER_SIZE];
struct bootp wbootp;
} wbuf;
struct {
u_char header[HEADER_SIZE];
struct bootp rbootp;
} rbuf;
#ifdef BOOTP_DEBUG
if (debug)
printf("bootp: socket=%d\n", sock);
#endif
if (!bot)
bot = getsecs();
if (!(d = socktodesc(sock))) {
printf("bootp: bad socket. %d\n", sock);
return;
}
#ifdef BOOTP_DEBUG
if (debug)
printf("bootp: d=%lx\n", (long)d);
#endif
bp = &wbuf.wbootp;
bzero(bp, sizeof(*bp));
bp->bp_op = BOOTREQUEST;
bp->bp_htype = 1; /* 10Mb Ethernet (48 bits) */
bp->bp_hlen = 6;
bp->bp_xid = htonl(d->xid);
MACPY(d->myea, bp->bp_chaddr);
strncpy(bp->bp_file, bootfile, sizeof(bp->bp_file));
bcopy(vm_rfc1048, bp->bp_vend, sizeof(vm_rfc1048));
#ifdef SUPPORT_DHCP
bp->bp_vend[4] = TAG_DHCP_MSGTYPE;
bp->bp_vend[5] = 1;
bp->bp_vend[6] = DHCPDISCOVER;
/*
* If we are booting from PXE, we want to send the string
* 'PXEClient' to the DHCP server so you have the option of
* only responding to PXE aware dhcp requests.
*/
if (flag & BOOTP_PXE) {
bp->bp_vend[7] = TAG_CLASSID;
bp->bp_vend[8] = 9;
bcopy("PXEClient", &bp->bp_vend[9], 9);
bp->bp_vend[18] = TAG_PARAM_REQ;
bp->bp_vend[19] = 7;
bp->bp_vend[20] = TAG_ROOTPATH;
bp->bp_vend[21] = TAG_HOSTNAME;
bp->bp_vend[22] = TAG_SWAPSERVER;
bp->bp_vend[23] = TAG_GATEWAY;
bp->bp_vend[24] = TAG_SUBNET_MASK;
bp->bp_vend[25] = TAG_INTF_MTU;
bp->bp_vend[26] = TAG_SERVERID;
bp->bp_vend[27] = TAG_END;
} else
bp->bp_vend[7] = TAG_END;
#else
bp->bp_vend[4] = TAG_END;
#endif
d->myip.s_addr = INADDR_ANY;
d->myport = htons(IPPORT_BOOTPC);
d->destip.s_addr = INADDR_BROADCAST;
d->destport = htons(IPPORT_BOOTPS);
#ifdef SUPPORT_DHCP
expected_dhcpmsgtype = DHCPOFFER;
dhcp_ok = 0;
#endif
if(sendrecv(d,
bootpsend, bp, sizeof(*bp),
bootprecv, &rbuf.rbootp, sizeof(rbuf.rbootp))
== -1) {
printf("bootp: no reply\n");
return;
}
#ifdef SUPPORT_DHCP
if(dhcp_ok) {
u_int32_t leasetime;
bp->bp_vend[6] = DHCPREQUEST;
bp->bp_vend[7] = TAG_REQ_ADDR;
bp->bp_vend[8] = 4;
bcopy(&rbuf.rbootp.bp_yiaddr, &bp->bp_vend[9], 4);
bp->bp_vend[13] = TAG_SERVERID;
bp->bp_vend[14] = 4;
bcopy(&dhcp_serverip.s_addr, &bp->bp_vend[15], 4);
bp->bp_vend[19] = TAG_LEASETIME;
bp->bp_vend[20] = 4;
leasetime = htonl(300);
bcopy(&leasetime, &bp->bp_vend[21], 4);
if (flag & BOOTP_PXE) {
bp->bp_vend[25] = TAG_CLASSID;
bp->bp_vend[26] = 9;
bcopy("PXEClient", &bp->bp_vend[27], 9);
bp->bp_vend[36] = TAG_END;
} else
bp->bp_vend[25] = TAG_END;
expected_dhcpmsgtype = DHCPACK;
if(sendrecv(d,
bootpsend, bp, sizeof(*bp),
bootprecv, &rbuf.rbootp, sizeof(rbuf.rbootp))
== -1) {
printf("DHCPREQUEST failed\n");
return;
}
}
#endif
myip = d->myip = rbuf.rbootp.bp_yiaddr;
servip = rbuf.rbootp.bp_siaddr;
if(rootip.s_addr == INADDR_ANY) rootip = servip;
bcopy(rbuf.rbootp.bp_file, bootfile, sizeof(bootfile));
bootfile[sizeof(bootfile) - 1] = '\0';
if (!netmask) {
if (IN_CLASSA(ntohl(myip.s_addr)))
netmask = htonl(IN_CLASSA_NET);
else if (IN_CLASSB(ntohl(myip.s_addr)))
netmask = htonl(IN_CLASSB_NET);
else
netmask = htonl(IN_CLASSC_NET);
#ifdef BOOTP_DEBUG
if (debug)
printf("'native netmask' is %s\n", intoa(netmask));
#endif
}
#ifdef BOOTP_DEBUG
if (debug)
printf("mask: %s\n", intoa(netmask));
#endif
/* We need a gateway if root is on a different net */
if (!SAMENET(myip, rootip, netmask)) {
#ifdef BOOTP_DEBUG
if (debug)
printf("need gateway for root ip\n");
#endif
}
/* Toss gateway if on a different net */
if (!SAMENET(myip, gateip, netmask)) {
#ifdef BOOTP_DEBUG
if (debug)
printf("gateway ip (%s) bad\n", inet_ntoa(gateip));
#endif
gateip.s_addr = 0;
}
/* Bump xid so next request will be unique. */
++d->xid;
}
/*
* Ethernet (Reverse) Address Resolution Protocol (see RFC 903, and 826).
*/
int
rarp_getipaddress(int sock)
{
struct iodesc *d;
struct ether_arp *ap;
struct {
u_char header[ETHER_SIZE];
struct {
struct ether_arp arp;
u_char pad[18]; /* 60 - sizeof(arp) */
} data;
} wbuf;
struct {
u_char header[ETHER_SIZE];
struct {
struct ether_arp arp;
u_char pad[24]; /* extra space */
} data;
} rbuf;
#ifdef RARP_DEBUG
if (debug)
printf("rarp: socket=%d\n", sock);
#endif
if (!(d = socktodesc(sock))) {
printf("rarp: bad socket. %d\n", sock);
return (-1);
}
#ifdef RARP_DEBUG
if (debug)
printf("rarp: d=%x\n", (u_int)d);
#endif
bzero((char*)&wbuf.data, sizeof(wbuf.data));
ap = &wbuf.data.arp;
ap->arp_hrd = htons(ARPHRD_ETHER);
ap->arp_pro = htons(ETHERTYPE_IP);
ap->arp_hln = sizeof(ap->arp_sha); /* hardware address length */
ap->arp_pln = sizeof(ap->arp_spa); /* protocol address length */
ap->arp_op = htons(ARPOP_REVREQUEST);
bcopy(d->myea, ap->arp_sha, 6);
bcopy(d->myea, ap->arp_tha, 6);
if (sendrecv(d,
rarpsend, &wbuf.data, sizeof(wbuf.data),
rarprecv, &rbuf.data, sizeof(rbuf.data)) < 0)
{
printf("No response for RARP request\n");
return (-1);
}
ap = &rbuf.data.arp;
bcopy(ap->arp_tpa, (char *)&myip, sizeof(myip));
#if 0
/* XXX - Can NOT assume this is our root server! */
bcopy(ap->arp_spa, (char *)&rootip, sizeof(rootip));
#endif
/* Compute our "natural" netmask. */
if (IN_CLASSA(myip.s_addr))
netmask = IN_CLASSA_NET;
else if (IN_CLASSB(myip.s_addr))
netmask = IN_CLASSB_NET;
else
netmask = IN_CLASSC_NET;
d->myip = myip;
return (0);
}
/* Fetch required bootp information */
void
bootp(int sock)
{
struct iodesc *d;
struct bootp *bp;
struct {
u_char header[UDP_TOTAL_HEADER_SIZE];
struct bootp wbootp;
} wbuf;
struct {
u_char header[UDP_TOTAL_HEADER_SIZE];
struct bootp rbootp;
} rbuf;
unsigned int index;
#ifdef BOOTP_DEBUG
if (debug)
printf("bootp: socket=%d\n", sock);
#endif
if (!bot)
bot = getsecs();
if (!(d = socktodesc(sock))) {
printf("bootp: bad socket. %d\n", sock);
return;
}
#ifdef BOOTP_DEBUG
if (debug)
printf("bootp: d=%lx\n", (long)d);
#endif
bp = &wbuf.wbootp;
(void)memset(bp, 0, sizeof(*bp));
bp->bp_op = BOOTREQUEST;
bp->bp_htype = 1; /* 10Mb Ethernet (48 bits) */
bp->bp_hlen = 6;
bp->bp_xid = htonl(d->xid);
MACPY(d->myea, bp->bp_chaddr);
(void)strncpy((char *)bp->bp_file, bootfile, sizeof(bp->bp_file));
(void)memcpy(bp->bp_vend, vm_rfc1048, sizeof(vm_rfc1048));
index = 4;
#ifdef SUPPORT_DHCP
bp->bp_vend[index++] = TAG_DHCP_MSGTYPE;
bp->bp_vend[index++] = 1;
bp->bp_vend[index++] = DHCPDISCOVER;
#endif
bootp_addvend(&bp->bp_vend[index]);
d->myip.s_addr = INADDR_ANY;
d->myport = htons(IPPORT_BOOTPC);
d->destip.s_addr = INADDR_BROADCAST;
d->destport = htons(IPPORT_BOOTPS);
#ifdef SUPPORT_DHCP
expected_dhcpmsgtype = DHCPOFFER;
dhcp_ok = 0;
#endif
if (sendrecv(d,
bootpsend, bp, sizeof(*bp),
bootprecv, &rbuf.rbootp, sizeof(rbuf.rbootp))
== -1) {
printf("bootp: no reply\n");
return;
}
#ifdef SUPPORT_DHCP
if (dhcp_ok) {
u_int32_t leasetime;
index = 6;
bp->bp_vend[index++] = DHCPREQUEST;
bp->bp_vend[index++] = TAG_REQ_ADDR;
bp->bp_vend[index++] = 4;
(void)memcpy(&bp->bp_vend[9], &rbuf.rbootp.bp_yiaddr, 4);
index += 4;
bp->bp_vend[index++] = TAG_SERVERID;
bp->bp_vend[index++] = 4;
(void)memcpy(&bp->bp_vend[index], &dhcp_serverip.s_addr, 4);
index += 4;
bp->bp_vend[index++] = TAG_LEASETIME;
bp->bp_vend[index++] = 4;
leasetime = htonl(300);
(void)memcpy(&bp->bp_vend[index], &leasetime, 4);
index += 4;
bootp_addvend(&bp->bp_vend[index]);
expected_dhcpmsgtype = DHCPACK;
if (sendrecv(d,
bootpsend, bp, sizeof(*bp),
bootprecv, &rbuf.rbootp, sizeof(rbuf.rbootp))
== -1) {
printf("DHCPREQUEST failed\n");
return;
}
}
#endif
myip = d->myip = rbuf.rbootp.bp_yiaddr;
servip = rbuf.rbootp.bp_siaddr;
if (rootip.s_addr == INADDR_ANY)
rootip = servip;
(void)memcpy(bootfile, rbuf.rbootp.bp_file, sizeof(bootfile));
bootfile[sizeof(bootfile) - 1] = '\0';
if (IN_CLASSA(myip.s_addr))
nmask = IN_CLASSA_NET;
else if (IN_CLASSB(myip.s_addr))
nmask = IN_CLASSB_NET;
else
nmask = IN_CLASSC_NET;
#ifdef BOOTP_DEBUG
if (debug)
printf("'native netmask' is %s\n", intoa(nmask));
#endif
/* Get subnet (or natural net) mask */
netmask = nmask;
if (smask)
netmask = smask;
#ifdef BOOTP_DEBUG
if (debug)
printf("mask: %s\n", intoa(netmask));
#endif
/* We need a gateway if root is on a different net */
if (!SAMENET(myip, rootip, netmask)) {
#ifdef BOOTP_DEBUG
if (debug)
printf("need gateway for root ip\n");
#endif
}
/* Toss gateway if on a different net */
if (!SAMENET(myip, gateip, netmask)) {
#ifdef BOOTP_DEBUG
if (debug)
printf("gateway ip (%s) bad\n", inet_ntoa(gateip));
#endif
gateip.s_addr = 0;
}
#ifdef BOOTP_DEBUG
if (debug) {
printf("client addr: %s\n", inet_ntoa(myip));
if (smask)
printf("subnet mask: %s\n", intoa(smask));
if (gateip.s_addr != 0)
printf("net gateway: %s\n", inet_ntoa(gateip));
printf("server addr: %s\n", inet_ntoa(rootip));
if (rootpath[0] != '\0')
printf("server path: %s\n", rootpath);
if (bootfile[0] != '\0')
printf("file name: %s\n", bootfile);
}
#endif
/* Bump xid so next request will be unique. */
++d->xid;
}
/* Fetch required bootp infomation */
void
bootp(int sock)
{
void *pkt;
struct iodesc *d;
struct bootp *bp;
struct {
uchar_t header[HEADER_SIZE];
struct bootp wbootp;
} wbuf;
struct bootp *rbootp;
#ifdef BOOTP_DEBUG
if (debug)
printf("bootp: socket=%d\n", sock);
#endif
if (!bot)
bot = getsecs();
if (!(d = socktodesc(sock))) {
printf("bootp: bad socket. %d\n", sock);
return;
}
#ifdef BOOTP_DEBUG
if (debug)
printf("bootp: d=%lx\n", (long)d);
#endif
bp = &wbuf.wbootp;
bzero(bp, sizeof (*bp));
bp->bp_op = BOOTREQUEST;
bp->bp_htype = 1; /* 10Mb Ethernet (48 bits) */
bp->bp_hlen = 6;
bp->bp_xid = htonl(d->xid);
MACPY(d->myea, bp->bp_chaddr);
strncpy(bp->bp_file, bootfile, sizeof (bp->bp_file));
bcopy(vm_rfc1048, bp->bp_vend, sizeof (vm_rfc1048));
#ifdef SUPPORT_DHCP
bp->bp_vend[4] = TAG_DHCP_MSGTYPE;
bp->bp_vend[5] = 1;
bp->bp_vend[6] = DHCPDISCOVER;
bootp_fill_request(&bp->bp_vend[7]);
#else
bp->bp_vend[4] = TAG_END;
#endif
d->myip.s_addr = INADDR_ANY;
d->myport = htons(IPPORT_BOOTPC);
d->destip.s_addr = INADDR_BROADCAST;
d->destport = htons(IPPORT_BOOTPS);
#ifdef SUPPORT_DHCP
expected_dhcpmsgtype = DHCPOFFER;
dhcp_ok = 0;
#endif
if (sendrecv(d, bootpsend, bp, sizeof (*bp),
bootprecv, &pkt, (void **)&rbootp, NULL) == -1) {
printf("bootp: no reply\n");
return;
}
#ifdef SUPPORT_DHCP
if (dhcp_ok) {
uint32_t leasetime;
bp->bp_vend[6] = DHCPREQUEST;
bp->bp_vend[7] = TAG_REQ_ADDR;
bp->bp_vend[8] = 4;
bcopy(&rbootp->bp_yiaddr, &bp->bp_vend[9], 4);
bp->bp_vend[13] = TAG_SERVERID;
bp->bp_vend[14] = 4;
bcopy(&dhcp_serverip.s_addr, &bp->bp_vend[15], 4);
bp->bp_vend[19] = TAG_LEASETIME;
bp->bp_vend[20] = 4;
leasetime = htonl(300);
bcopy(&leasetime, &bp->bp_vend[21], 4);
bootp_fill_request(&bp->bp_vend[25]);
expected_dhcpmsgtype = DHCPACK;
free(pkt);
if (sendrecv(d, bootpsend, bp, sizeof (*bp),
bootprecv, &pkt, (void **)&rbootp, NULL) == -1) {
printf("DHCPREQUEST failed\n");
return;
}
}
#endif
myip = d->myip = rbootp->bp_yiaddr;
servip = rbootp->bp_siaddr;
if (rootip.s_addr == INADDR_ANY)
rootip = servip;
bcopy(rbootp->bp_file, bootfile, sizeof (bootfile));
bootfile[sizeof (bootfile) - 1] = '\0';
if (!netmask) {
if (IN_CLASSA(ntohl(myip.s_addr)))
netmask = htonl(IN_CLASSA_NET);
else if (IN_CLASSB(ntohl(myip.s_addr)))
netmask = htonl(IN_CLASSB_NET);
else
netmask = htonl(IN_CLASSC_NET);
#ifdef BOOTP_DEBUG
if (debug)
printf("'native netmask' is %s\n", intoa(netmask));
#endif
}
#ifdef BOOTP_DEBUG
if (debug)
printf("mask: %s\n", intoa(netmask));
#endif
/* We need a gateway if root is on a different net */
if (!SAMENET(myip, rootip, netmask)) {
#ifdef BOOTP_DEBUG
if (debug)
printf("need gateway for root ip\n");
#endif
}
/* Toss gateway if on a different net */
if (!SAMENET(myip, gateip, netmask)) {
#ifdef BOOTP_DEBUG
if (debug)
printf("gateway ip (%s) bad\n", inet_ntoa(gateip));
#endif
gateip.s_addr = 0;
}
/* Bump xid so next request will be unique. */
++d->xid;
free(pkt);
}
static int
net_getparams(int sock)
{
char buf[MAXHOSTNAMELEN];
char temp[FNAME_SIZE];
struct iodesc *d;
int i;
n_long smask;
#ifdef SUPPORT_BOOTP
/*
* Try to get boot info using BOOTP. If we succeed, then
* the server IP address, gateway, and root path will all
* be initialized. If any remain uninitialized, we will
* use RARP and RPC/bootparam (the Sun way) to get them.
*/
if (try_bootp)
bootp(sock, BOOTP_NONE);
if (myip.s_addr != 0)
goto exit;
if (debug)
printf("net_open: BOOTP failed, trying RARP/RPC...\n");
#endif
/*
* Use RARP to get our IP address. This also sets our
* netmask to the "natural" default for our address.
*/
if (rarp_getipaddress(sock)) {
printf("net_open: RARP failed\n");
return (EIO);
}
printf("net_open: client addr: %s\n", inet_ntoa(myip));
/* Get our hostname, server IP address, gateway. */
if (bp_whoami(sock)) {
printf("net_open: bootparam/whoami RPC failed\n");
return (EIO);
}
printf("net_open: client name: %s\n", hostname);
/*
* Ignore the gateway from whoami (unreliable).
* Use the "gateway" parameter instead.
*/
smask = 0;
gateip.s_addr = 0;
if (bp_getfile(sock, "gateway", &gateip, buf) == 0) {
/* Got it! Parse the netmask. */
smask = ip_convertaddr(buf);
}
if (smask) {
netmask = smask;
printf("net_open: subnet mask: %s\n", intoa(netmask));
}
if (gateip.s_addr)
printf("net_open: net gateway: %s\n", inet_ntoa(gateip));
/* Get the root server and pathname. */
if (bp_getfile(sock, "root", &rootip, rootpath)) {
printf("net_open: bootparam/getfile RPC failed\n");
return (EIO);
}
exit:
/*
* If present, strip the server's address off of the rootpath
* before passing it along. This allows us to be compatible with
* the kernel's diskless (BOOTP_NFSROOT) booting conventions
*/
for (i = 0; i < FNAME_SIZE && rootpath[i] != '\0'; i++)
if (rootpath[i] == ':')
break;
if (i && i != FNAME_SIZE && rootpath[i] == ':') {
rootpath[i++] = '\0';
if (inet_addr(&rootpath[0]) != INADDR_NONE)
rootip.s_addr = inet_addr(&rootpath[0]);
memcpy(&temp[0], &rootpath[i], strlen(&rootpath[i])+1);
memcpy(&rootpath[0], &temp[0], strlen(&rootpath[i])+1);
}
printf("net_open: server addr: %s\n", inet_ntoa(rootip));
printf("net_open: server path: %s\n", rootpath);
d = socktodesc(sock);
snprintf(temp, sizeof(temp), "%6D", d->myea, ":");
setenv("boot.netif.ip", inet_ntoa(myip), 1);
setenv("boot.netif.netmask", intoa(netmask), 1);
setenv("boot.netif.gateway", inet_ntoa(gateip), 1);
setenv("boot.netif.hwaddr", temp, 1);
setenv("boot.nfsroot.server", inet_ntoa(rootip), 1);
setenv("boot.nfsroot.path", rootpath, 1);
return (0);
}
/*
* Open a file.
* return zero or error number
*/
int
nfs_open(const char *upath, struct open_file *f)
{
struct iodesc *desc;
struct nfs_iodesc *currfd;
char buf[2 * NFS_FHSIZE + 3];
u_char *fh;
char *cp;
int i;
#ifndef NFS_NOSYMLINK
struct nfs_iodesc *newfd;
struct nfsv2_fattrs *fa;
char *ncp;
int c;
char namebuf[NFS_MAXPATHLEN + 1];
char linkbuf[NFS_MAXPATHLEN + 1];
int nlinks = 0;
#endif
int error;
char *path;
#ifdef NFS_DEBUG
if (debug)
printf("nfs_open: %s (rootpath=%s)\n", upath, rootpath);
#endif
if (!rootpath[0]) {
printf("no rootpath, no nfs\n");
return (ENXIO);
}
/*
* This is silly - we should look at dv_type but that value is
* arch dependant and we can't use it here.
*/
#ifndef __i386__
if (strcmp(f->f_dev->dv_name, "net") != 0)
return(EINVAL);
#else
if (strcmp(f->f_dev->dv_name, "pxe") != 0)
return(EINVAL);
#endif
if (!(desc = socktodesc(*(int *)(f->f_devdata))))
return(EINVAL);
/* Bind to a reserved port. */
desc->myport = htons(--rpc_port);
desc->destip = rootip;
if ((error = nfs_getrootfh(desc, rootpath, nfs_root_node.fh)))
return (error);
nfs_root_node.fa.fa_type = htonl(NFDIR);
nfs_root_node.fa.fa_mode = htonl(0755);
nfs_root_node.fa.fa_nlink = htonl(2);
nfs_root_node.iodesc = desc;
fh = &nfs_root_node.fh[0];
buf[0] = 'X';
cp = &buf[1];
for (i = 0; i < NFS_FHSIZE; i++, cp += 2)
sprintf(cp, "%02x", fh[i]);
sprintf(cp, "X");
setenv("boot.nfsroot.server", inet_ntoa(rootip), 1);
setenv("boot.nfsroot.path", rootpath, 1);
setenv("boot.nfsroot.nfshandle", buf, 1);
/* Allocate file system specific data structure */
currfd = malloc(sizeof(*newfd));
if (currfd == NULL) {
error = ENOMEM;
goto out;
}
#ifndef NFS_NOSYMLINK
bcopy(&nfs_root_node, currfd, sizeof(*currfd));
newfd = 0;
cp = path = strdup(upath);
if (path == NULL) {
error = ENOMEM;
goto out;
}
while (*cp) {
/*
* Remove extra separators
*/
while (*cp == '/')
cp++;
if (*cp == '\0')
break;
/*
* Check that current node is a directory.
*/
if (currfd->fa.fa_type != htonl(NFDIR)) {
error = ENOTDIR;
goto out;
}
/* allocate file system specific data structure */
newfd = malloc(sizeof(*newfd));
newfd->iodesc = currfd->iodesc;
/*
* Get next component of path name.
*/
{
int len = 0;
ncp = cp;
while ((c = *cp) != '\0' && c != '/') {
if (++len > NFS_MAXNAMLEN) {
error = ENOENT;
goto out;
}
cp++;
}
*cp = '\0';
}
/* lookup a file handle */
error = nfs_lookupfh(currfd, ncp, newfd);
*cp = c;
if (error)
goto out;
/*
* Check for symbolic link
*/
if (newfd->fa.fa_type == htonl(NFLNK)) {
int link_len, len;
error = nfs_readlink(newfd, linkbuf);
if (error)
goto out;
link_len = strlen(linkbuf);
len = strlen(cp);
if (link_len + len > MAXPATHLEN
|| ++nlinks > MAXSYMLINKS) {
error = ENOENT;
goto out;
}
bcopy(cp, &namebuf[link_len], len + 1);
bcopy(linkbuf, namebuf, link_len);
/*
* If absolute pathname, restart at root.
* If relative pathname, restart at parent directory.
*/
cp = namebuf;
if (*cp == '/')
bcopy(&nfs_root_node, currfd, sizeof(*currfd));
free(newfd);
newfd = 0;
continue;
}
free(currfd);
currfd = newfd;
newfd = 0;
}
error = 0;
out:
free(newfd);
free(path);
#else
currfd->iodesc = desc;
error = nfs_lookupfh(&nfs_root_node, upath, currfd);
#endif
if (!error) {
currfd->off = 0;
f->f_fsdata = (void *)currfd;
return (0);
}
#ifdef NFS_DEBUG
if (debug)
printf("nfs_open: %s lookupfh failed: %s\n",
path, strerror(error));
#endif
free(currfd);
return (error);
}
/*
* RPC: bootparam/getfile
* Given client name and file "key", get:
* server name
* server IP address
* server pathname
*/
int
bp_getfile(int sockfd, char *key, struct in_addr *serv_addr, char *pathname)
{
struct {
n_long h[RPC_HEADER_WORDS];
n_long d[64];
} sdata;
struct {
n_long h[RPC_HEADER_WORDS];
n_long d[128];
} rdata;
char serv_name[FNAME_SIZE];
char *send_tail, *recv_head;
/* misc... */
struct iodesc *d;
int sn_len, path_len, rlen;
if (!(d = socktodesc(sockfd))) {
RPC_PRINTF(("bp_getfile: bad socket. %d\n", sockfd));
return (-1);
}
send_tail = (char *)sdata.d;
recv_head = (char *)rdata.d;
/*
* Build request message.
*/
/* client name (hostname) */
if (xdr_string_encode(&send_tail, hostname, hostnamelen)) {
RPC_PRINTF(("bp_getfile: bad client\n"));
return (-1);
}
/* key name (root or swap) */
if (xdr_string_encode(&send_tail, key, strlen(key))) {
RPC_PRINTF(("bp_getfile: bad key\n"));
return (-1);
}
/* RPC: bootparam/getfile */
d->myport = htons(--rpc_port);
d->destip = bp_server_addr;
/* rpc_call will set d->destport */
rlen = rpc_call(d,
BOOTPARAM_PROG, BOOTPARAM_VERS, BOOTPARAM_GETFILE,
sdata.d, send_tail - (char *)sdata.d,
rdata.d, sizeof(rdata.d));
if (rlen < 4) {
RPC_PRINTF(("bp_getfile: short reply\n"));
errno = EBADRPC;
return (-1);
}
recv_head = (char *)rdata.d;
/*
* Parse result message.
*/
/* server name */
sn_len = FNAME_SIZE-1;
if (xdr_string_decode(&recv_head, serv_name, &sn_len)) {
RPC_PRINTF(("bp_getfile: bad server name\n"));
return (-1);
}
/* server IP address (mountd/NFS) */
if (xdr_inaddr_decode(&recv_head, serv_addr)) {
RPC_PRINTF(("bp_getfile: bad server addr\n"));
return (-1);
}
/* server pathname */
path_len = MAXPATHLEN-1;
if (xdr_string_decode(&recv_head, pathname, &path_len)) {
RPC_PRINTF(("bp_getfile: bad server path\n"));
return (-1);
}
/* success */
return(0);
}
/*
* RPC: bootparam/whoami
* Given client IP address, get:
* client name (hostname)
* domain name (domainname)
* gateway address
*
* The hostname and domainname are set here for convenience.
*
* Note - bpsin is initialized to the broadcast address,
* and will be replaced with the bootparam server address
* after this call is complete. Have to use PMAP_PROC_CALL
* to make sure we get responses only from a servers that
* know about us (don't want to broadcast a getport call).
*/
int
bp_whoami(int sockfd)
{
/* RPC structures for PMAPPROC_CALLIT */
struct args {
u_int32_t prog;
u_int32_t vers;
u_int32_t proc;
u_int32_t arglen;
struct xdr_inaddr xina;
} *args;
struct repl {
u_int16_t _pad;
u_int16_t port;
u_int32_t encap_len;
/* encapsulated data here */
n_long capsule[64];
} *repl;
struct {
n_long h[RPC_HEADER_WORDS];
struct args d;
} sdata;
struct {
n_long h[RPC_HEADER_WORDS];
struct repl d;
} rdata;
char *send_tail, *recv_head;
struct iodesc *d;
int len, x;
RPC_PRINTF(("bp_whoami: myip=%s\n", inet_ntoa(myip)));
if (!(d = socktodesc(sockfd))) {
RPC_PRINTF(("bp_whoami: bad socket. %d\n", sockfd));
return (-1);
}
args = &sdata.d;
repl = &rdata.d;
/*
* Build request args for PMAPPROC_CALLIT.
*/
args->prog = htonl(BOOTPARAM_PROG);
args->vers = htonl(BOOTPARAM_VERS);
args->proc = htonl(BOOTPARAM_WHOAMI);
args->arglen = htonl(sizeof(struct xdr_inaddr));
send_tail = (char *)&args->xina;
/*
* append encapsulated data (client IP address)
*/
if (xdr_inaddr_encode(&send_tail, myip))
return (-1);
/* RPC: portmap/callit */
d->myport = htons(--rpc_port);
d->destip.s_addr = INADDR_BROADCAST; /* XXX: subnet bcast? */
/* rpc_call will set d->destport */
len = rpc_call(d, PMAPPROG, PMAPVERS, PMAPPROC_CALLIT,
args, send_tail - (char *)args,
repl, sizeof(*repl));
if (len < 8) {
printf("bootparamd: 'whoami' call failed\n");
return (-1);
}
/* Save bootparam server address (from IP header). */
rpc_fromaddr(repl, &bp_server_addr, &bp_server_port);
/*
* Note that bp_server_port is now 111 due to the
* indirect call (using PMAPPROC_CALLIT), so get the
* actual port number from the reply data.
*/
bp_server_port = repl->port;
RPC_PRINTF(("bp_whoami: server at %s:%d\n",
inet_ntoa(bp_server_addr), ntohs(bp_server_port)));
/* We have just done a portmap call, so cache the portnum. */
rpc_pmap_putcache(bp_server_addr, BOOTPARAM_PROG, BOOTPARAM_VERS,
(int)ntohs(bp_server_port));
/*
* Parse the encapsulated results from bootparam/whoami
*/
x = ntohl(repl->encap_len);
if (len < x) {
printf("bp_whoami: short reply, %d < %d\n", len, x);
return (-1);
}
recv_head = (char *)repl->capsule;
/* client name */
hostnamelen = MAXHOSTNAMELEN-1;
if (xdr_string_decode(&recv_head, hostname, &hostnamelen)) {
RPC_PRINTF(("bp_whoami: bad hostname\n"));
return (-1);
}
/* domain name */
domainnamelen = MAXHOSTNAMELEN-1;
if (xdr_string_decode(&recv_head, domainname, &domainnamelen)) {
RPC_PRINTF(("bp_whoami: bad domainname\n"));
return (-1);
}
/* gateway address */
if (xdr_inaddr_decode(&recv_head, &gateip)) {
RPC_PRINTF(("bp_whoami: bad gateway\n"));
return (-1);
}
/* success */
return(0);
}
