proc.c

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		lastname_len = 0;
		if (ff_lastname > 0)
		{
			switch (info_level)
			{
			case 260:
				lastname = p + ff_lastname;
				lastname_len = resp_data_len - ff_lastname;
				ff_resume_key = 0;
				break;
			case 1:
				lastname = p + ff_lastname + 1;
				lastname_len = BVAL(p, ff_lastname);
				ff_resume_key = 0;
				break;
			}
		}
		lastname_len = min(lastname_len, 256);
		strncpy(mask, lastname, lastname_len);
		mask[lastname_len] = '\0';

		/* Now we are ready to parse smb directory entries. */

		for (i = 0; i < ff_searchcount; i++)
		{
			struct smb_dirent *entry = &(cache[entries]);

			p = smb_decode_long_dirent(server, p,
						   entry, info_level);

			DDPRINTK("smb_readdir_long: got %s\n", entry->name);

			if ((entry->name[0] == '.')
			    && ((entry->name[1] == '\0')
				|| ((entry->name[1] == '.')
				    && (entry->name[2] == '\0'))))
			{
				/* ignore . and .. from the server */
				continue;
			}
			if (entries_seen >= fpos)
			{
				entry->f_pos = entries_seen;
				entries += 1;
			}
			if (entries >= cache_size)
			{
				goto finished;
			}
			entries_seen += 1;
		}

		DPRINTK("received %d entries (eos=%d resume=%d)\n",
			ff_searchcount, ff_eos, ff_resume_key);

		first = 0;
	}

      finished:
	smb_unlock_server(server);
	return entries;
}

int
smb_proc_readdir(struct smb_server *server, struct inode *dir, int fpos,
		 int cache_size, struct smb_dirent *entry)
{
	if (server->protocol >= PROTOCOL_LANMAN2)
		return smb_proc_readdir_long(server, dir, fpos, cache_size,
					     entry);
	else
		return smb_proc_readdir_short(server, dir, fpos, cache_size,
					      entry);
}

/*
 * This version uses the core protocol to get the attribute info.
 * It works OK with Win 3.11, 95 and NT 3.51, but NOT with NT 4 (bad mtime).
 */
static int
smb_proc_getattr_core(struct inode *dir, const char *name, int len,
		      struct smb_dirent *entry)
{
	int result;
	char *p;
	struct smb_server *server = SMB_SERVER(dir);
	char *buf;

	smb_lock_server(server);

	DDPRINTK("smb_proc_getattr_core: %s\n", name);

      retry:
	buf = server->packet;
	p = smb_setup_header(server, SMBgetatr, 0, 0);
	*p++ = 4;
	p = smb_encode_path(server, p, SMB_INOP(dir), name, len);
	smb_setup_bcc(server, p);

	if ((result = smb_request_ok(server, SMBgetatr, 10, 0)) < 0)
	{
		if (smb_retry(server))
		{
			goto retry;
		}
		smb_unlock_server(server);
		return result;
	}
	/* N.B. Packet may change after request */
	buf = server->packet;
	entry->attr = WVAL(buf, smb_vwv0);
	entry->f_ctime = entry->f_atime =
	    entry->f_mtime = local2utc(DVAL(buf, smb_vwv1));

	DDPRINTK("smb_proc_getattr_core: mtime=%ld\n", entry->f_mtime);

	entry->f_size = DVAL(buf, smb_vwv3);
	smb_unlock_server(server);
	return 0;
}

/*
 * This version uses the trans2 findfirst to get the attribute info.
 * It works fine with NT 3.51 and NT 4 (any SP), but not with Win95 (ERRerror).
 */
static int
smb_proc_getattr_ff(struct inode *dir, const char *name, int len,
		    struct smb_dirent *entry)
{
	unsigned char *resp_data = NULL;
	unsigned char *resp_param = NULL;
	int resp_data_len = 0;
	int resp_param_len = 0;

	char param[SMB_MAXPATHLEN + 1 + 12];
	int mask_len;
	unsigned char *mask = &(param[12]);

	int result;
	char *p;
	struct smb_server *server = SMB_SERVER(dir);

	mask_len = smb_encode_path(server, mask,
				   SMB_INOP(dir), name, len) - mask;

	mask[mask_len] = 0;

	DDPRINTK("smb_proc_getattr_ff: mask=%s\n", mask);

	smb_lock_server(server);

      retry:

	WSET(param, 0, aSYSTEM | aHIDDEN | aDIR);
	WSET(param, 2, 1);      /* max count */
	WSET(param, 4, 2 + 1);  /* close on end + close after this call */
	WSET(param, 6, 1);      /* info level */
	DSET(param, 8, 0);

	result = smb_trans2_request(server, TRANSACT2_FINDFIRST,
				    0, NULL, 12 + mask_len + 1, param,
				    &resp_data_len, &resp_data,
				    &resp_param_len, &resp_param);

	if (result < 0)
	{
		if (smb_retry(server))
		{
			DPRINTK("smb_proc_getattr_ff: error=%d, retrying\n",
				 result);
			goto retry;
		}
		goto out;
	}
	if (server->rcls != 0)
	{
		result = -smb_errno(server->rcls, server->err);
		if (result != -ENOENT)
			DPRINTK("smb_proc_getattr_ff: rcls=%d, err=%d\n",
				 server->rcls, server->err);
		goto out;
	}
	/* Make sure we got enough data ... */
	result = -EINVAL;      /* WVAL(resp_param, 2) is ff_searchcount */
	if (resp_data_len < 22 || WVAL(resp_param, 2) != 1)
	{
		DPRINTK("smb_proc_getattr_ff: bad result, len=%d, count=%d\n",
			 resp_data_len, WVAL(resp_param, 2));
		goto out;
	}
	/* Decode the response (info level 1, as in smb_decode_long_dirent) */
	p = resp_data;
	entry->f_ctime = date_dos2unix(WVAL(p, 2), WVAL(p, 0));
	entry->f_atime = date_dos2unix(WVAL(p, 6), WVAL(p, 4));
	entry->f_mtime = date_dos2unix(WVAL(p, 10), WVAL(p, 8));
	entry->f_size = DVAL(p, 12);
	entry->attr = WVAL(p, 20);

	DDPRINTK("smb_proc_getattr_ff: attr=%x\n", entry->attr);

	result = 0;

out:
	smb_unlock_server(server);
	return result;
}

int
smb_proc_getattr(struct inode *dir, const char *name, int len,
		 struct smb_dirent *entry)
{
	struct smb_server *server = SMB_SERVER(dir);
        int result;

	smb_init_dirent(server, entry);
 
 	/* Use trans2 for NT, use core protocol for others (Win95/3.11/...).
 	 * We distinguish NT from Win95 by looking at the capabilities,
 	 * in the same way as in Samba 1.9.18p2's reply.c.
 	 */
	if ((server->protocol >= PROTOCOL_LANMAN2)
	    && (server->blkmode & (CAP_NT_SMBS | CAP_STATUS32)))
		result = smb_proc_getattr_ff(dir, name, len, entry);
	else
		result = smb_proc_getattr_core(dir, name, len, entry);

	smb_finish_dirent(server, entry);

	entry->len = len;
	memcpy(entry->name, name, len);
	/* entry->name is null terminated from smb_init_dirent */

	return result;
}

int
smb_proc_setattr(struct smb_server *server,
                 struct inode *i, struct smb_dirent *new_finfo)
{
	char *p;
	char *buf;
	int result;

	smb_lock_server(server);

      retry:
	buf = server->packet;
	p = smb_setup_header(server, SMBsetatr, 8, 0);
	WSET(buf, smb_vwv0, new_finfo->attr);
	DSET(buf, smb_vwv1, 0);
	DSET(buf, smb_vwv3, 0);
	DSET(buf, smb_vwv5, 0);
	WSET(buf, smb_vwv7, 0);
	*p++ = 4;
	p = smb_encode_path(server, p,
			    SMB_INOP(i)->dir, SMB_INOP(i)->finfo.name,
			    SMB_INOP(i)->finfo.len);

	smb_setup_bcc(server, p);
	if ((result = smb_request_ok(server, SMBsetatr, 0, 0)) < 0)
	{
		if (smb_retry(server))
		{
			goto retry;
		}
	}
	smb_unlock_server(server);
	return result;
}

int
smb_proc_dskattr(struct super_block *super, struct smb_dskattr *attr)
{
	int error;
	char *p;
	struct smb_server *server = &(SMB_SBP(super)->s_server);

	smb_lock_server(server);

      retry:
	smb_setup_header(server, SMBdskattr, 0, 0);

	if ((error = smb_request_ok(server, SMBdskattr, 5, 0)) < 0)
	{
		if (smb_retry(server))
		{
			goto retry;
		}
		smb_unlock_server(server);
		return error;
	}
	p = SMB_VWV(server->packet);
	p = smb_decode_word(p, &attr->total);
	p = smb_decode_word(p, &attr->allocblocks);
	p = smb_decode_word(p, &attr->blocksize);
	p = smb_decode_word(p, &attr->free);
	smb_unlock_server(server);
	return 0;
}

/*****************************************************************************/
/*                                                                           */
/*  Mount/umount operations.                                                 */
/*                                                                           */
/*****************************************************************************/

struct smb_prots
{
	enum smb_protocol prot;
	const char *name;
};

/* smb_proc_reconnect: We expect the server to be locked, so that you
   can call the routine from within smb_retry. The socket must be
   created, like after a user-level socket()-call. It may not be
   connected. */

int
smb_proc_reconnect(struct smb_server *server)
{
	struct smb_prots prots[] =
	{
		{PROTOCOL_CORE, "PC NETWORK PROGRAM 1.0"},
		{PROTOCOL_COREPLUS, "MICROSOFT NETWORKS 1.03"},
#ifdef LANMAN1
		{PROTOCOL_LANMAN1, "MICROSOFT NETWORKS 3.0"},
		{PROTOCOL_LANMAN1, "LANMAN1.0"},
#endif
#ifdef LANMAN2
		{PROTOCOL_LANMAN2, "LM1.2X002"},
#endif
#ifdef NT1
		{PROTOCOL_NT1, "NT LM 0.12"},
		{PROTOCOL_NT1, "NT LANMAN 1.0"},
#endif
		{-1, NULL}};
	char dev[] = "A:";
	int i, plength;
	int max_xmit = 1024;	/* Space needed for first request. */
	int given_max_xmit = server->m.max_xmit;
	int result;
	byte *p;

	if ((result = smb_connect(server)) < 0)
	{
		DPRINTK("smb_proc_reconnect: could not smb_connect\n");
		goto fail;
	}
	/* Here we assume that the connection is valid */
	server->state = CONN_VALID;

	if (server->packet != NULL)
	{
		smb_vfree(server->packet);
		server->packet = NULL;
		server->packet_size = 0;
	}
	server->packet = smb_vmalloc(max_xmit);

	if (server->packet == NULL)
	{
		printk("smb_proc_connect: No memory! Bailing out.\n");
		result = -ENOMEM;
		goto fail;
	}
	server->packet_size = server->max_xmit = max_xmit;

	/*
	 * Start with an RFC1002 session request packet.
	 */
	p = server->packet + 4;

	p = smb_name_mangle(p, server->m.server_name);
	p = smb_name_mangle(p, server->m.client_name);

	smb_encode_smb_length(server->packet,
			      (void *) p - (void *) (server->packet));

	server->packet[0] = 0x81;	/* SESSION REQUEST */

	if (smb_catch_keepalive(server) < 0)
	{
		printk("smb_proc_connect: could not catch_keepalives\n");
	}
	if ((result = smb_request(server)) < 0)
	{
		DPRINTK("smb_proc_connect: Failed to send SESSION REQUEST.\n");
		smb_dont_catch_keepalive(server);
		goto fail;
	}
	if (server->packet[0] != 0x82)
	{
		printk("smb_proc_connect: Did not receive positive response "
		       "(err = %x)\n",
		       server->packet[0]);
		smb_dont_catch_keepalive(server);
		result = -EIO;
		goto fail;
	}
	DPRINTK("smb_proc_connect: Passed SESSION REQUEST.\n");

	/* Now we are ready to send a SMB Negotiate Protocol packet. */
	memset(server->packet, 0, SMB_HEADER_LEN);

	plength = 0;
	for (i = 0; prots[i].name != NULL; i++)
	{
		plength += strlen(prots[i].name) + 2;
	}

	smb_setup_header(server, SMBnegprot, 0, plength);

	p = SMB_BUF(server->packet);

	for (i = 0; prots[i].name != NULL; i++)
	{
		*p++ = 2;
		strcpy(p, prots[i].name);
		p += strlen(prots[i].name) + 1;
	}

	if ((result = smb_request_ok(server, SMBnegprot, 1, -1)) < 0)
	{
		DPRINTK("smb_proc_connect: Failure requesting SMBnegprot\n");
		smb_dont_catch_keepalive(server);
		goto fail;
	} else
	{
		DDPRINTK("smb_proc_connect: Request SMBnegprot..");
	}

	DDPRINTK("Verified!\n");

	p = SMB_VWV(server->packet);
	p = smb_decode_word(p, (word *) & i);
	server->protocol = prots[i].prot;

	DPRINTK("smb_proc_connect: Server wants %s protocol.\n",
		prots[i].name);

	if (server->protocol >= PROTOCOL_LANMAN1)
	{

		word passlen = strlen(server->m.password);
		word userlen = strlen(server->m.username);

#ifdef DEBUG_SMB_PASSWORD
		DPRINTK("smb_proc_connect: password = %s\n",
			server->m.password);
#endif			
		DPRINTK("smb_proc_connect: usernam = %s\n",
			server->m.username);

		if (server->protocol >= PROTOCOL_NT1)
		{
			server->max_xmit = DVAL(server->packet, smb_vwv3 + 1);
			server->maxmux = WVAL(server->packet, smb_vwv1 + 1);
			server->maxvcs = WVAL(server->packet, smb_vwv2 + 1);
			server->blkmode = DVAL(server->packet, smb_vwv9 + 1);
			server->sesskey = DVAL(server->packet, smb_vwv7 + 1);
		} else
		{
			server->max_xmit = WVAL(server->packet, smb_vwv2);
			server->maxmux = WVAL(server->packet, smb_vwv3);
			server->maxvcs = WVAL(server->packet, smb_vwv4);
			server->blkmode = WVAL(server->packet, smb_vwv5);
			server->sesskey = DVAL(server->packet, smb_vwv6);
		}
		DPRINTK("smb_proc_connect: blkmode (capabilities) = %x\n",
			server->blkmode);

		if (server->max_xmit < given_max_xmit)
		{
			/* We do not distinguish between the client
			   requests and the server response. */
			given_max_xmit = server->max_xmit;
		}
		if (server->protocol >= PROTOCOL_NT1)
		{
			char *workgroup = server->m.domain;
			char *OS_id = "Unix";
			char *client_id = "ksmbfs";

			smb_setup_header(server, SMBsesssetupX, 13,
					 5 + userlen + passlen +
					 strlen(workgroup) + strlen(OS_id) +
					 strlen(client_id));

			WSET(server->packet, smb_vwv0, 0x00ff);
			WSET(server->packet, smb_vwv1, 0);
			WSET(server->packet, smb_vwv2, given_max_xmit);
			WSET(server->packet, smb_vwv3, 2);
			WSET(server->packet, smb_vwv4, server->pid);
			DSET(server->packet, smb_vwv5, server->sesskey);
			WSET(server->packet, smb_vwv7, passlen + 1);
			WSET(server->packet, smb_vwv8, 0);
			WSET(server->packet, smb_vwv9, 0);

			p = SMB_BUF(server->packet);
			strcpy(p, server->m.password);
			p += passlen + 1;
			strcpy(p, server->m.username);
			p += userlen + 1;
			strcpy(p, workgroup);
			p += strlen(p) + 1;
			strcpy(p, OS_id);
			p += strlen(p) + 1;
			strcpy(p, client_id);
		} else
		{
			smb_setup_header(server, SMBsesssetupX, 10,
					 2 + userlen + passlen);

			WSET(server->packet, smb_vwv0, 0x00ff);
			WSET(server->packet, smb_vwv1, 0);
			WSET(server->packet, smb_vwv2, given_max_xmit);
			WSET(server->packet, smb_vwv3, 2);
			WSET(server->packet, smb_vwv4, server->pid);
			DSET(server->packet, smb_vwv5, server->sesskey);
			WSET(server->packet, smb_vwv7, passlen + 1);
			WSET(server->packet, smb_vwv8, 0);
			WSET(server->packet, smb_vwv9, 0);

			p = SMB_BUF(server->packet);
			strcpy(p, server->m.password);
			p += passlen + 1;
			strcpy(p, server->m.username);
		}

		if ((result = smb_request_ok(server, SMBsesssetupX, 3, 0)) < 0)
		{
			DPRINTK("smb_proc_connect: SMBsessetupX failed\n");
			smb_dont_catch_keepalive(server);
			goto fail;
		}
		smb_decode_word(server->packet + 32, &(server->server_uid));
	} else
	{
		server->max_xmit = 0;
		server->maxmux = 0;
		server->maxvcs = 0;
		server->blkmode = 0;
		server->sesskey = 0;
	}

	/* Fine! We have a connection, send a tcon message. */

	smb_setup_header(server, SMBtcon, 0,
			 6 + strlen(server->m.service) +
			 strlen(server->m.password) + strlen(dev));

	p = SMB_BUF(server->packet);
	p = smb_encode_ascii(p, server->m.service, strlen(server->m.service));
	p = smb_encode_ascii(p, server->m.password, strlen(server->m.password));
	p = smb_encode_ascii(p, dev, strlen(dev));

	if ((result = smb_request_ok(server, SMBtcon, 2, 0)) < 0)
	{
		DPRINTK("smb_proc_connect: SMBtcon not verified.\n");
		smb_dont_catch_keepalive(server);
		goto fail;
	}
	DDPRINTK("OK! Managed to set up SMBtcon!\n");

	p = SMB_VWV(server->packet);

	if (server->protocol <= PROTOCOL_COREPLUS)
	{
		word max_xmit;

		p = smb_decode_word(p, &max_xmit);
		server->max_xmit = max_xmit;

		if (server->max_xmit > given_max_xmit)
		{
			server->max_xmit = given_max_xmit;
		}
	} else
	{
		p += 2;
	}

	p = smb_decode_word(p, &server->tid);

	/* Ok, everything is fine. max_xmit does not include */
	/* the TCP-SMB header of 4 bytes. */
	server->max_xmit += 4;

	DPRINTK("max_xmit = %d, tid = %d\n", server->max_xmit, server->tid);

	/* Now make a new packet with the correct size. */
	smb_vfree(server->packet);
	server->packet = NULL;

	server->packet = smb_vmalloc(server->max_xmit);
	if (server->packet == NULL)
	{
		printk("smb_proc_connect: No memory left in end of "
		       "connection phase :-(\n");
		smb_dont_catch_keepalive(server);
		goto fail;
	}
	server->packet_size = server->max_xmit;

	DPRINTK("smb_proc_connect: Normal exit\n");
	return 0;

      fail:
	server->state = CONN_INVALID;
	return result;
}

/* smb_proc_reconnect: server->packet is allocated with
   server->max_xmit bytes if and only if we return >= 0 */
int
smb_proc_connect(struct smb_server *server)
{
	int result;
	smb_lock_server(server);

	result = smb_proc_reconnect(server);

	if ((result < 0) && (server->packet != NULL))
	{
		smb_vfree(server->packet);
		server->packet = NULL;
	}
	smb_unlock_server(server);
	return result;
}

int
smb_proc_disconnect(struct smb_server *server)
{
	smb_setup_header_exclusive(server, SMBtdis, 0, 0);
	return smb_request_ok_unlock(server, SMBtdis, 0, 0);
}