559 lines
9.9 KiB
C
Executable file
559 lines
9.9 KiB
C
Executable file
/*
|
|
* IO to the floppyd daemon running on the local X-Server Host
|
|
*
|
|
* written by:
|
|
*
|
|
* Peter Schlaile
|
|
*
|
|
* udbz@rz.uni-karlsruhe.de
|
|
*
|
|
*/
|
|
|
|
#include "sysincludes.h"
|
|
#include "stream.h"
|
|
#include "mtools.h"
|
|
#include "msdos.h"
|
|
#include "scsi.h"
|
|
#include "partition.h"
|
|
#include "floppyd_io.h"
|
|
|
|
#ifdef USE_FLOPPYD
|
|
|
|
/* ######################################################################## */
|
|
|
|
|
|
typedef unsigned char Byte;
|
|
typedef unsigned long Dword;
|
|
|
|
char* AuthErrors[] = {
|
|
"Auth success!",
|
|
"Auth failed: Packet oversized!",
|
|
"Auth failed: X-Cookie doesn't match!",
|
|
"Auth failed: Wrong transmission protocol version!",
|
|
"Auth failed: Device locked!"
|
|
};
|
|
|
|
|
|
typedef struct RemoteFile_t {
|
|
Class_t *Class;
|
|
int refs;
|
|
Stream_t *Next;
|
|
Stream_t *Buffer;
|
|
int fd;
|
|
mt_off_t offset;
|
|
mt_off_t lastwhere;
|
|
mt_off_t size;
|
|
} RemoteFile_t;
|
|
|
|
|
|
#ifndef HAVE_HTONS
|
|
unsigned short myhtons(unsigned short parm)
|
|
{
|
|
Byte val[2];
|
|
|
|
val[0] = (parm >> 8) & 0xff;
|
|
val[1] = parm & 0xff;
|
|
|
|
return *((unsigned short*) (val));
|
|
}
|
|
#endif
|
|
|
|
Dword byte2dword(Byte* val)
|
|
{
|
|
Dword l;
|
|
l = (val[0] << 24) + (val[1] << 16) + (val[2] << 8) + val[3];
|
|
|
|
return l;
|
|
}
|
|
|
|
void dword2byte(Dword parm, Byte* rval)
|
|
{
|
|
rval[0] = (parm >> 24) & 0xff;
|
|
rval[1] = (parm >> 16) & 0xff;
|
|
rval[2] = (parm >> 8) & 0xff;
|
|
rval[3] = parm & 0xff;
|
|
}
|
|
|
|
Dword read_dword(int handle)
|
|
{
|
|
Byte val[4];
|
|
|
|
read(handle, val, 4);
|
|
|
|
return byte2dword(val);
|
|
}
|
|
|
|
void write_dword(int handle, Dword parm)
|
|
{
|
|
Byte val[4];
|
|
|
|
dword2byte(parm, val);
|
|
|
|
write(handle, val, 4);
|
|
}
|
|
|
|
|
|
/* ######################################################################## */
|
|
|
|
int authenticate_to_floppyd(int sock, char *display)
|
|
{
|
|
off_t filelen;
|
|
Byte buf[16];
|
|
char *command[] = { "xauth", "xauth", "extract", "-", 0, 0 };
|
|
char *xcookie;
|
|
Dword errcode;
|
|
|
|
command[4] = display;
|
|
|
|
filelen=strlen(display);
|
|
filelen += 100;
|
|
|
|
xcookie = (char *) safe_malloc(filelen+4);
|
|
filelen = safePopenOut(command, xcookie+4, filelen);
|
|
if(filelen < 1)
|
|
return AUTH_AUTHFAILED;
|
|
|
|
dword2byte(4,buf);
|
|
dword2byte(FLOPPYD_PROTOCOL_VERSION,buf+4);
|
|
write(sock, buf, 8);
|
|
|
|
if (read_dword(sock) != 4) {
|
|
return AUTH_WRONGVERSION;
|
|
}
|
|
|
|
errcode = read_dword(sock);
|
|
|
|
if (errcode != AUTH_SUCCESS) {
|
|
return errcode;
|
|
}
|
|
|
|
dword2byte(filelen, xcookie);
|
|
write(sock, xcookie, filelen+4);
|
|
|
|
if (read_dword(sock) != 4) {
|
|
return AUTH_PACKETOVERSIZE;
|
|
}
|
|
|
|
errcode = read_dword(sock);
|
|
|
|
return errcode;
|
|
}
|
|
|
|
|
|
static int floppyd_reader(int fd, char* buffer, int len)
|
|
{
|
|
Dword errcode;
|
|
Dword gotlen;
|
|
int l;
|
|
int start;
|
|
Byte buf[16];
|
|
|
|
dword2byte(1, buf);
|
|
buf[4] = OP_READ;
|
|
dword2byte(4, buf+5);
|
|
dword2byte(len, buf+9);
|
|
write(fd, buf, 13);
|
|
|
|
if (read_dword(fd) != 8) {
|
|
errno = EIO;
|
|
return -1;
|
|
}
|
|
|
|
gotlen = read_dword(fd);
|
|
errcode = read_dword(fd);
|
|
|
|
if (gotlen != -1) {
|
|
if (read_dword(fd) != gotlen) {
|
|
errno = EIO;
|
|
return -1;
|
|
}
|
|
for (start = 0, l = 0; start < gotlen; start += l) {
|
|
l = read(fd, buffer+start, gotlen-start);
|
|
if (l == 0) {
|
|
errno = EIO;
|
|
return -1;
|
|
}
|
|
}
|
|
} else {
|
|
errno = errcode;
|
|
}
|
|
return gotlen;
|
|
}
|
|
|
|
static int floppyd_writer(int fd, char* buffer, int len)
|
|
{
|
|
Dword errcode;
|
|
Dword gotlen;
|
|
Byte buf[16];
|
|
|
|
dword2byte(1, buf);
|
|
buf[4] = OP_WRITE;
|
|
dword2byte(len, buf+5);
|
|
|
|
write(fd, buf, 9);
|
|
write(fd, buffer, len);
|
|
|
|
if (read_dword(fd) != 8) {
|
|
errno = EIO;
|
|
return -1;
|
|
}
|
|
|
|
gotlen = read_dword(fd);
|
|
errcode = read_dword(fd);
|
|
|
|
errno = errcode;
|
|
|
|
return gotlen;
|
|
}
|
|
|
|
static int floppyd_lseek(int fd, mt_off_t offset, int whence)
|
|
{
|
|
Dword errcode;
|
|
Dword gotlen;
|
|
Byte buf[32];
|
|
|
|
dword2byte(1, buf);
|
|
buf[4] = OP_SEEK;
|
|
|
|
dword2byte(8, buf+5);
|
|
dword2byte(truncBytes32(offset), buf+9);
|
|
dword2byte(whence, buf+13);
|
|
|
|
write(fd, buf, 17);
|
|
|
|
if (read_dword(fd) != 8) {
|
|
errno = EIO;
|
|
return -1;
|
|
}
|
|
|
|
gotlen = read_dword(fd);
|
|
errcode = read_dword(fd);
|
|
|
|
errno = errcode;
|
|
|
|
return gotlen;
|
|
}
|
|
|
|
/* ######################################################################## */
|
|
|
|
typedef int (*iofn) (int, char *, int);
|
|
|
|
static int floppyd_io(Stream_t *Stream, char *buf, mt_off_t where, int len,
|
|
iofn io)
|
|
{
|
|
DeclareThis(RemoteFile_t);
|
|
int ret;
|
|
|
|
where += This->offset;
|
|
|
|
if (where != This->lastwhere ){
|
|
if(floppyd_lseek( This->fd, where, SEEK_SET) < 0 ){
|
|
perror("floppyd_lseek");
|
|
This->lastwhere = (mt_off_t) -1;
|
|
return -1;
|
|
}
|
|
}
|
|
ret = io(This->fd, buf, len);
|
|
if ( ret == -1 ){
|
|
perror("floppyd_io");
|
|
This->lastwhere = (mt_off_t) -1;
|
|
return -1;
|
|
}
|
|
This->lastwhere = where + ret;
|
|
return ret;
|
|
}
|
|
|
|
static int floppyd_read(Stream_t *Stream, char *buf, mt_off_t where, size_t len)
|
|
{
|
|
return floppyd_io(Stream, buf, where, len, (iofn) floppyd_reader);
|
|
}
|
|
|
|
static int floppyd_write(Stream_t *Stream, char *buf, mt_off_t where, size_t len)
|
|
{
|
|
return floppyd_io(Stream, buf, where, len, (iofn) floppyd_writer);
|
|
}
|
|
|
|
static int floppyd_flush(Stream_t *Stream)
|
|
{
|
|
#if 0
|
|
Byte buf[16];
|
|
|
|
DeclareThis(RemoteFile_t);
|
|
|
|
dword2byte(1, buf);
|
|
buf[4] = OP_FLUSH;
|
|
|
|
write(This->fd, buf, 5);
|
|
|
|
if (read_dword(This->fd) != 8) {
|
|
errno = EIO;
|
|
return -1;
|
|
}
|
|
|
|
read_dword(This->fd);
|
|
read_dword(This->fd);
|
|
#endif
|
|
return 0;
|
|
}
|
|
|
|
static int floppyd_free(Stream_t *Stream)
|
|
{
|
|
Byte buf[16];
|
|
|
|
DeclareThis(RemoteFile_t);
|
|
|
|
if (This->fd > 2) {
|
|
dword2byte(1, buf);
|
|
buf[4] = OP_CLOSE;
|
|
write(This->fd, buf, 5);
|
|
return close(This->fd);
|
|
} else {
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
static int floppyd_geom(Stream_t *Stream, struct device *dev,
|
|
struct device *orig_dev,
|
|
int media, struct bootsector *boot)
|
|
{
|
|
size_t tot_sectors;
|
|
int sect_per_track;
|
|
DeclareThis(RemoteFile_t);
|
|
|
|
dev->ssize = 2; /* allow for init_geom to change it */
|
|
dev->use_2m = 0x80; /* disable 2m mode to begin */
|
|
|
|
if(media == 0xf0 || media >= 0x100){
|
|
dev->heads = WORD(nheads);
|
|
dev->sectors = WORD(nsect);
|
|
tot_sectors = DWORD(bigsect);
|
|
SET_INT(tot_sectors, WORD(psect));
|
|
sect_per_track = dev->heads * dev->sectors;
|
|
tot_sectors += sect_per_track - 1; /* round size up */
|
|
dev->tracks = tot_sectors / sect_per_track;
|
|
|
|
} else if (media >= 0xf8){
|
|
media &= 3;
|
|
dev->heads = old_dos[media].heads;
|
|
dev->tracks = old_dos[media].tracks;
|
|
dev->sectors = old_dos[media].sectors;
|
|
dev->ssize = 0x80;
|
|
dev->use_2m = ~1;
|
|
} else {
|
|
fprintf(stderr,"Unknown media type\n");
|
|
exit(1);
|
|
}
|
|
|
|
This->size = (mt_off_t) 512 * dev->sectors * dev->tracks * dev->heads;
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
static int floppyd_data(Stream_t *Stream, time_t *date, mt_size_t *size,
|
|
int *type, int *address)
|
|
{
|
|
DeclareThis(RemoteFile_t);
|
|
|
|
if(date)
|
|
/* unknown, and irrelevant anyways */
|
|
*date = 0;
|
|
if(size)
|
|
/* the size derived from the geometry */
|
|
*size = (mt_size_t) This->size;
|
|
if(type)
|
|
*type = 0; /* not a directory */
|
|
if(address)
|
|
*address = 0;
|
|
return 0;
|
|
}
|
|
|
|
/* ######################################################################## */
|
|
|
|
static Class_t FloppydFileClass = {
|
|
floppyd_read,
|
|
floppyd_write,
|
|
floppyd_flush,
|
|
floppyd_free,
|
|
floppyd_geom,
|
|
floppyd_data
|
|
};
|
|
|
|
/* ######################################################################## */
|
|
|
|
int get_host_and_port(const char* name, char** hostname, char **display,
|
|
short* port)
|
|
{
|
|
char* newname = strdup(name);
|
|
char* p;
|
|
char* p2;
|
|
|
|
p = newname;
|
|
while (*p != '/' && *p) p++;
|
|
p2 = p;
|
|
if (*p) p++;
|
|
*p2 = 0;
|
|
|
|
*port = atoi(p);
|
|
if (*port == 0) {
|
|
*port = FLOPPYD_DEFAULT_PORT;
|
|
}
|
|
|
|
*display = strdup(newname);
|
|
|
|
p = newname;
|
|
while (*p != ':' && *p) p++;
|
|
p2 = p;
|
|
if (*p) p++;
|
|
*p2 = 0;
|
|
|
|
*port += atoi(p); /* add display number to the port */
|
|
|
|
if (!*newname || strcmp(newname, "unix") == 0) {
|
|
free(newname);
|
|
newname = strdup("localhost");
|
|
}
|
|
|
|
*hostname = newname;
|
|
return 1;
|
|
}
|
|
|
|
/*
|
|
* * Return the IP address of the specified host.
|
|
* */
|
|
static IPaddr_t getipaddress(char *ipaddr)
|
|
{
|
|
|
|
struct hostent *host;
|
|
IPaddr_t ip;
|
|
|
|
if (((ip = inet_addr(ipaddr)) == INADDR_NONE) &&
|
|
(strcmp(ipaddr, "255.255.255.255") != 0)) {
|
|
|
|
if ((host = gethostbyname(ipaddr)) != NULL) {
|
|
memcpy(&ip, host->h_addr, sizeof(ip));
|
|
}
|
|
|
|
endhostent();
|
|
}
|
|
|
|
#ifdef DEBUG
|
|
fprintf(stderr, "IP lookup %s -> 0x%08lx\n", ipaddr, ip);
|
|
#endif
|
|
|
|
return (ip);
|
|
}
|
|
|
|
/*
|
|
* * Connect to the floppyd server.
|
|
* */
|
|
static int connect_to_server(IPaddr_t ip, short port)
|
|
{
|
|
|
|
struct sockaddr_in addr;
|
|
int sock;
|
|
|
|
/*
|
|
* Allocate a socket.
|
|
*/
|
|
if ((sock = socket(AF_INET, SOCK_STREAM, 0)) < 0) {
|
|
return (-1);
|
|
}
|
|
|
|
/*
|
|
* Set the address to connect to.
|
|
*/
|
|
|
|
addr.sin_family = AF_INET;
|
|
#ifndef HAVE_HTONS
|
|
addr.sin_port = myhtons(port);
|
|
#else
|
|
addr.sin_port = htons(port);
|
|
#endif
|
|
addr.sin_addr.s_addr = ip;
|
|
|
|
/*
|
|
* Connect our socket to the above address.
|
|
*/
|
|
if (connect(sock, (struct sockaddr *)&addr, sizeof(addr)) < 0) {
|
|
return (-1);
|
|
}
|
|
|
|
/*
|
|
* Set the keepalive socket option to on.
|
|
*/
|
|
{
|
|
int on = 1;
|
|
setsockopt(sock, SOL_SOCKET, SO_KEEPALIVE,
|
|
(char *)&on, sizeof(on));
|
|
}
|
|
|
|
return (sock);
|
|
}
|
|
|
|
static int ConnectToFloppyd(const char* name);
|
|
|
|
Stream_t *FloppydOpen(struct device *dev, struct device *dev2,
|
|
char *name, int mode, char *errmsg,
|
|
int mode2, int locked)
|
|
{
|
|
RemoteFile_t *This;
|
|
|
|
if (!dev || !(dev->misc_flags & FLOPPYD_FLAG))
|
|
return NULL;
|
|
|
|
This = New(RemoteFile_t);
|
|
if (!This){
|
|
printOom();
|
|
return NULL;
|
|
}
|
|
This->Class = &FloppydFileClass;
|
|
This->Next = 0;
|
|
This->offset = 0;
|
|
This->lastwhere = 0;
|
|
This->refs = 1;
|
|
This->Buffer = 0;
|
|
|
|
This->fd = ConnectToFloppyd(name);
|
|
if (This->fd == -1) {
|
|
Free(This);
|
|
return NULL;
|
|
}
|
|
return (Stream_t *) This;
|
|
}
|
|
|
|
static int ConnectToFloppyd(const char* name)
|
|
{
|
|
char* hostname;
|
|
char* display;
|
|
short port;
|
|
int rval = get_host_and_port(name, &hostname, &display, &port);
|
|
int sock;
|
|
int reply;
|
|
|
|
if (!rval) return -1;
|
|
|
|
sock = connect_to_server(getipaddress(hostname), port);
|
|
|
|
if (sock == -1) {
|
|
fprintf(stderr,
|
|
"Can't connect to floppyd server on %s, port %i!\n",
|
|
hostname, port);
|
|
return -1;
|
|
}
|
|
|
|
reply = authenticate_to_floppyd(sock, display);
|
|
|
|
if (reply != 0) {
|
|
fprintf(stderr,
|
|
"Permission denied, authentication failed!\n"
|
|
"%s\n", AuthErrors[reply]);
|
|
return -1;
|
|
}
|
|
|
|
free(hostname);
|
|
free(display);
|
|
|
|
return sock;
|
|
}
|
|
#endif
|