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/* * $Id: proc.c,v 1.55 2004/05/18 08:39:13 obarthel Exp $ * * :ts=8 * * proc.c * * Copyright (C) 1995 by Paal-Kr. Engstad and Volker Lendecke * * 28/06/96 - Fixed long file name support (smb_proc_readdir_long) by Yuri Per * * Modified for big endian support by Christian Starkjohann. * Modified for use with AmigaOS by Olaf Barthel <olsen@sourcery.han.de> */ #include "smbfs.h" /*****************************************************************************/ #include <smb/smb.h> #include <smb/smbno.h> #include <smb/smb_fs.h> /*****************************************************************************/ #define SMB_VWV(packet) ((packet) + SMB_HEADER_LEN) #define SMB_CMD(packet) ((packet)[8]) #define SMB_WCT(packet) ((packet)[SMB_HEADER_LEN - 1]) #define SMB_BCC(packet) smb_bcc(packet) #define SMB_BUF(packet) ((packet) + SMB_HEADER_LEN + SMB_WCT(packet) * 2 + 2) #define SMB_DIRINFO_SIZE 43 #define SMB_STATUS_SIZE 21 /*****************************************************************************/ static INLINE byte * smb_encode_word(byte *p, word data); static INLINE byte * smb_decode_word(byte *p, word *data); static INLINE int utc2local(int time_value); static INLINE int local2utc(int time_value); static INLINE word smb_bcc(byte *packet); static INLINE int smb_verify(byte *packet, int command, int wct, int bcc); static byte *smb_encode_dialect(byte *p, const byte *name, int len); static byte *smb_encode_ascii(byte *p, const byte *name, int len); static void smb_encode_vblock(byte *p, const byte *data, word len, int unused_fs); static byte *smb_decode_data(byte *p, byte *data, word *data_len, int fs); static byte *smb_name_mangle(byte *p, const byte *name); static int date_dos2unix(unsigned short time_value, unsigned short date); static void date_unix2dos(int unix_date, unsigned short *time_value, unsigned short *date); static INLINE int smb_valid_packet(byte *packet); static int smb_errno(int errcls, int error); static int smb_request_ok(struct smb_server *s, int command, int wct, int bcc); static int smb_retry(struct smb_server *server); static int smb_request_ok_unlock(struct smb_server *s, int command, int wct, int bcc); static byte *smb_setup_header(struct smb_server *server, byte command, word wct, word bcc); static byte *smb_setup_header_exclusive(struct smb_server *server, byte command, word wct, word bcc); static int smb_proc_do_create(struct smb_server *server, const char *path, int len, struct smb_dirent *entry, word command); static char *smb_decode_dirent(char *p, struct smb_dirent *entry); static int smb_proc_readdir_short(struct smb_server *server, char *path, int fpos, int cache_size, struct smb_dirent *entry); static char *smb_decode_long_dirent(char *p, struct smb_dirent *finfo, int level); static int smb_proc_readdir_long(struct smb_server *server, char *path, int fpos, int cache_size, struct smb_dirent *entry); static int smb_proc_reconnect(struct smb_server *server); static void smb_printerr(int class, int num); /*****************************************************************************/ /***************************************************************************** * * Encoding/Decoding section * *****************************************************************************/ static INLINE byte * smb_encode_word (byte * p, word data) { p[0] = data & 0x00ffU; p[1] = (data & 0xff00U) >> 8; return &p[2]; } static INLINE byte * smb_decode_word (byte * p, word * data) { (*data) = (word) p[0] | p[1] << 8; return &(p[2]); } byte * smb_encode_smb_length (byte * p, dword len) { p[0] = p[1] = 0; p[2] = (len & 0xFF00) >> 8; p[3] = (len & 0xFF); if (len > 0xFFFF) p[1] |= 0x01; return &p[4]; } static byte * smb_encode_dialect (byte * p, const byte * name, int len) { (*p++) = 2; strcpy (p, name); return p + len + 1; } static byte * smb_encode_ascii (byte * p, const byte * name, int len) { (*p++) = 4; strcpy (p, name); return p + len + 1; } static void smb_encode_vblock (byte * p, const byte * data, word len, int unused_fs) { (*p++) = 5; p = smb_encode_word (p, len); memcpy (p, data, len); } static byte * smb_decode_data (byte * p, byte * data, word * data_len, int unused_fs) { word len; if (!((*p) == 1 || (*p) == 5)) LOG (("Warning! Data block not starting with 1 or 5\n")); len = WVAL (p, 1); p += 3; memcpy (data, p, len); (*data_len) = len; return p + len; } static byte * smb_name_mangle (byte * p, const byte * name) { int len, pad = 0; len = strlen (name); if (len < 16) pad = 16 - len; (*p++) = 2 * (len + pad); while ((*name) != '\0') { (*p++) = ((*name) >> 4) + 'A'; (*p++) = ((*name) & 0x0F) + 'A'; name++; } while (pad-- > 0) { (*p++) = 'C'; (*p++) = 'A'; } (*p++) = '\0'; return p; } static INLINE int utc2local (int time_value) { int result; result = time_value - GetTimeZoneDelta(); return result; } static INLINE int local2utc (int time_value) { int result; result = time_value + GetTimeZoneDelta(); return result; } /* Convert a MS-DOS time/date pair to a UNIX date (seconds since January 1st 1970). */ static int date_dos2unix (unsigned short time_value, unsigned short date) { time_t seconds; struct tm tm; memset(&tm,0,sizeof(tm)); tm.tm_sec = 2 * (time_value & 0x1F); tm.tm_min = (time_value >> 5) & 0x3F; tm.tm_hour = (time_value >> 11) & 0x1F; tm.tm_mday = date & 0x1F; tm.tm_mon = ((date >> 5) & 0xF) - 1; tm.tm_year = ((date >> 9) & 0x7F) + 80; seconds = MakeTime(&tm); return(seconds); } /* Convert linear UNIX date to a MS-DOS time/date pair. */ static void date_unix2dos (int unix_date, unsigned short *time_value, unsigned short *date) { struct tm tm; LocalTime(unix_date,&tm); (*time_value) = (tm.tm_hour << 11) | (tm.tm_min << 5) | (tm.tm_sec / 2); (*date) = ((tm.tm_year - 80) << 9) | ((tm.tm_mon + 1) << 5) | tm.tm_mday; } /**************************************************************************** * * Support section. * ****************************************************************************/ dword smb_len (byte * packet) { return (dword)( ((packet[1] & 0x1) << 16L) | (packet[2] << 8L) | (packet[3]) ); } static INLINE word smb_bcc (byte * packet) { int pos = SMB_HEADER_LEN + SMB_WCT (packet) * sizeof (word); return (word)(packet[pos] | packet[pos + 1] << 8); } /* smb_valid_packet: We check if packet fulfills the basic requirements of a smb packet */ static INLINE int smb_valid_packet (byte * packet) { int result; LOG (("len: %ld, wct: %ld, bcc: %ld\n", smb_len (packet), SMB_WCT (packet), SMB_BCC (packet))); result = (packet[4] == 0xff && packet[5] == 'S' && packet[6] == 'M' && packet[7] == 'B' && (smb_len (packet) + 4 == (dword)( SMB_HEADER_LEN + SMB_WCT (packet) * 2 + SMB_BCC (packet) + 2))) ? 0 : (-EIO); return result; } /* smb_verify: We check if we got the answer we expected, and if we got enough data. If bcc == -1, we don't care. */ static INLINE int smb_verify (byte * packet, int command, int wct, int bcc) { return (SMB_CMD (packet) == command && SMB_WCT (packet) >= wct && (bcc == -1 || SMB_BCC (packet) >= bcc)) ? 0 : -EIO; } static int smb_errno (int errcls, int error) { int result,i; if (errcls) smb_printerr (errcls, error); if (errcls == ERRDOS) { static const int map[][2] = { { ERRbadfunc,EINVAL }, { ERRbadfile,ENOENT }, { ERRbadpath,ENOENT }, { ERRnofids,EMFILE }, { ERRnoaccess,EACCES }, { ERRbadfid,EBADF }, { ERRbadmcb,EIO }, { ERRnomem,ENOMEM }, { ERRbadmem,EFAULT }, { ERRbadenv,EIO }, { ERRbadformat,EIO }, { ERRbadaccess,EACCES }, { ERRbaddata,E2BIG }, { ERRbaddrive,ENXIO }, { ERRremcd,EIO }, { ERRdiffdevice,EXDEV }, { ERRnofiles,0 }, { ERRbadshare,ETXTBSY }, { ERRlock,EDEADLK }, { ERRfilexists,EEXIST }, { 87,0 },/* Unknown error! */ { 183,EEXIST },/* This next error seems to occur on an mv when the destination exists */ { -1,-1 } }; result = EIO; for(i = 0 ; map[i][0] != -1 ; i++) { if(map[i][0] == error) { result = map[i][1]; break; } } } else if (errcls == ERRSRV) { static const int map[][2] = { { ERRerror,ENFILE }, { ERRbadpw,EINVAL }, { ERRbadtype,EIO }, { ERRaccess,EACCES }, { -1, -1 } }; result = EIO; for(i = 0 ; map[i][0] != -1 ; i++) { if(map[i][0] == error) { result = map[i][1]; break; } } } else if (errcls == ERRHRD) { static const int map[][2] = { { ERRnowrite,EROFS }, { ERRbadunit,ENODEV }, { ERRnotready,EBUSY }, { ERRbadcmd,EIO }, { ERRdata,EIO }, { ERRbadreq,ERANGE }, { ERRbadshare,ETXTBSY }, { ERRlock,EDEADLK }, { -1, -1 } }; result = EIO; for(i = 0 ; map[i][0] != -1 ; i++) { if(map[i][0] == error) { result = map[i][1]; break; } } } else if (errcls == ERRCMD) { result = EIO; } else { result = 0; } return(result); } #if DEBUG static char print_char (char c) { if ((c < ' ') || (c > '~')) return '.'; return c; } static void smb_dump_packet (byte * packet) { int i, j, len; int errcls, error; errcls = (int) packet[9]; error = (int) (int) (packet[11] | packet[12] << 8); LOG (("smb_len = %ld valid = %ld \n", len = smb_len (packet), smb_valid_packet (packet))); LOG (("smb_cmd = %ld smb_wct = %ld smb_bcc = %ld\n", packet[8], SMB_WCT (packet), SMB_BCC (packet))); LOG (("smb_rcls = %ld smb_err = %ld\n", errcls, error)); if (errcls) smb_printerr (errcls, error); if (len > 100) len = 100; PRINTHEADER(); for (i = 0; i < len; i += 10) { PRINTF (("%03ld:", i)); for (j = i; j < i + 10; j++) { if (j < len) PRINTF (("%02lx ", packet[j])); else PRINTF ((" ")); } PRINTF ((": ")); for (j = i; j < i + 10; j++) { if (j < len) PRINTF (("%lc", print_char (packet[j]))); } PRINTF (("\n")); } } #endif /* DEBUG */ /* smb_request_ok: We expect the server to be locked. Then we do the request and check the answer completely. When smb_request_ok returns 0, you can be quite sure that everything went well. When the answer is <=0, the returned number is a valid unix errno. */ static int smb_request_ok (struct smb_server *s, int command, int wct, int bcc) { int result; int error; s->rcls = 0; s->err = 0; result = smb_request (s); if (result < 0) { LOG (("smb_request failed\n")); } else if ((error = smb_valid_packet (s->packet)) != 0) { LOG (("not a valid packet!\n")); result = error; } else if (s->rcls != 0) { result = -smb_errno (s->rcls, s->err); } else if ((error = smb_verify (s->packet, command, wct, bcc)) != 0) { LOG (("smb_verify failed\n")); result = error; } return(result); } /* smb_retry: This function should be called when smb_request_ok has indicated an error. If the error was indicated because the connection was killed, we try to reconnect. If smb_retry returns 0, the error was indicated for another reason, so a retry would not be of any use. */ static int smb_retry (struct smb_server *server) { int result = 0; if (server->state == CONN_VALID) goto out; if (smb_release (server) < 0) { LOG (("smb_retry: smb_release failed\n")); server->state = CONN_RETRIED; goto out; } if (smb_proc_reconnect (server) < 0) { LOG (("smb_proc_reconnect failed\n")); server->state = CONN_RETRIED; goto out; } server->state = CONN_VALID; result = 1; out: return result; } static int smb_request_ok_unlock (struct smb_server *s, int command, int wct, int bcc) { int result; result = smb_request_ok (s, command, wct, bcc); return result; } /* smb_setup_header: We completely set up the packet. You only have to insert the command-specific fields */ static byte * smb_setup_header (struct smb_server *server, byte command, word wct, word bcc) { dword xmit_len = SMB_HEADER_LEN + wct * sizeof (word) + bcc + 2; byte *p = server->packet; byte *buf = server->packet; p = smb_encode_smb_length (p, xmit_len); BSET (p, 0, 0xff); BSET (p, 1, 'S'); BSET (p, 2, 'M'); BSET (p, 3, 'B'); BSET (p, 4, command); p += 5; memset (p, '\0', 19); p += 19; p += 8; WSET (buf, smb_tid, server->tid); WSET (buf, smb_pid, 0); /* server->pid */ WSET (buf, smb_uid, server->server_uid); WSET (buf, smb_mid, 0); /* server->mid */ if (server->protocol > PROTOCOL_CORE) { BSET (buf, smb_flg, 0x8); WSET (buf, smb_flg2, 0x3); } (*p++) = wct; /* wct */ p += 2 * wct; WSET (p, 0, bcc); return p + 2; } /* smb_setup_header_exclusive waits on server->lock and locks the server, when it's free. You have to unlock it manually when you're finished with server->packet! */ static byte * smb_setup_header_exclusive (struct smb_server *server, byte command, word wct, word bcc) { byte * result; result = smb_setup_header (server, command, wct, bcc); return result; } /***************************************************************************** * * File operation section. * ****************************************************************************/ int smb_proc_open (struct smb_server *server, const char *pathname, int len, struct smb_dirent *entry) { int error; char *p; char *buf = server->packet; const word o_attr = aSYSTEM | aHIDDEN | aDIR; LOG (("path=%s\n", pathname)); retry: p = smb_setup_header (server, SMBopen, 2, 2 + len); WSET (buf, smb_vwv0, 0x42); /* read/write */ WSET (buf, smb_vwv1, o_attr); smb_encode_ascii (p, pathname, len); if ((error = smb_request_ok (server, SMBopen, 7, 0)) < 0) { if (smb_retry (server)) goto retry; if (error != -EACCES) goto out; p = smb_setup_header (server, SMBopen, 2, 2 + len); WSET (buf, smb_vwv0, 0x40); /* read only */ WSET (buf, smb_vwv1, o_attr); smb_encode_ascii (p, pathname, len); if ((error = smb_request_ok (server, SMBopen, 7, 0)) < 0) { if (smb_retry (server)) goto retry; goto out; } } /* We should now have data in vwv[0..6]. */ entry->fileid = WVAL (buf, smb_vwv0); entry->attr = WVAL (buf, smb_vwv1); entry->ctime = entry->atime = entry->mtime = local2utc (DVAL (buf, smb_vwv2)); entry->size = DVAL (buf, smb_vwv4); entry->opened = 1; out: return error; } /* smb_proc_close: in finfo->mtime we can send a modification time to the server */ int smb_proc_close (struct smb_server *server, word fileid, dword mtime) { char *buf = server->packet; int local_time; int result; if(mtime != 0 && mtime != 0xffffffff) { /* 0 and 0xffffffff mean: do not set mtime */ local_time = utc2local (mtime); } else { local_time = mtime; } smb_setup_header_exclusive (server, SMBclose, 3, 0); WSET (buf, smb_vwv0, fileid); DSET (buf, smb_vwv1, local_time); result = smb_request_ok_unlock (server, SMBclose, 0, 0); return result; } /* In smb_proc_read and smb_proc_write we do not retry, because the file-id would not be valid after a reconnection. */ /* smb_proc_read: fs indicates if it should be copied with memcpy_tofs. */ int smb_proc_read (struct smb_server *server, struct smb_dirent *finfo, off_t offset, long count, char *data, int fs) { word returned_count, data_len; char *buf = server->packet; int result; int error; smb_setup_header_exclusive (server, SMBread, 5, 0); WSET (buf, smb_vwv0, finfo->fileid); WSET (buf, smb_vwv1, count); DSET (buf, smb_vwv2, offset); WSET (buf, smb_vwv4, 0); if ((error = smb_request_ok (server, SMBread, 5, -1)) < 0) { result = error; goto out; } returned_count = WVAL (buf, smb_vwv0); smb_decode_data (SMB_BUF (server->packet), data, &data_len, fs); if (returned_count != data_len) { LOG (("Warning, returned_count != data_len\n")); LOG (("ret_c=%ld, data_len=%ld\n", returned_count, data_len)); } else { LOG (("ret_c=%ld, data_len=%ld\n", returned_count, data_len)); } result = data_len; out: return result; } /* count must be <= 65535. No error number is returned. A result of 0 indicates an error, which has to be investigated by a normal read call. */ int smb_proc_read_raw (struct smb_server *server, struct smb_dirent *finfo, off_t offset, long count, char *data) { char *buf = server->packet; int result; smb_setup_header_exclusive (server, SMBreadbraw, 8, 0); WSET (buf, smb_vwv0, finfo->fileid); DSET (buf, smb_vwv1, offset); WSET (buf, smb_vwv3, count); WSET (buf, smb_vwv4, 0); DSET (buf, smb_vwv5, 0); result = smb_request_read_raw (server, data, count); return result; } int smb_proc_write (struct smb_server *server, struct smb_dirent *finfo, off_t offset, long count, const char *data) { int res; char *buf = server->packet; byte *p; p = smb_setup_header_exclusive (server, SMBwrite, 5, count + 3); WSET (buf, smb_vwv0, finfo->fileid); WSET (buf, smb_vwv1, count); DSET (buf, smb_vwv2, offset); WSET (buf, smb_vwv4, 0); (*p++) = 1; WSET (p, 0, count); memcpy (p + 2, data, count); if ((res = smb_request_ok (server, SMBwrite, 1, 0)) >= 0) res = WVAL (buf, smb_vwv0); return res; } /* count must be <= 65535 */ int smb_proc_write_raw (struct smb_server *server, struct smb_dirent *finfo, off_t offset, long count, const char *data) { char *buf = server->packet; int result; long len = server->max_xmit - 4; byte *p; if (len >= count) len = 0; else len = count - len; /* transfer the larger part using the second packet */ p = smb_setup_header_exclusive (server, SMBwritebraw, 11, len); WSET (buf, smb_vwv0, finfo->fileid); DSET (buf, smb_vwv1, count); DSET (buf, smb_vwv3, offset); DSET (buf, smb_vwv5, 0); /* timeout */ WSET (buf, smb_vwv7, 1); /* send final result response */ DSET (buf, smb_vwv8, 0); /* reserved */ if (server->protocol > PROTOCOL_COREPLUS) { WSET (buf, smb_vwv10, len); WSET (buf, smb_vwv11, p - smb_base(buf)); } if (len > 0) memcpy (p, data, len); result = smb_request_ok (server, SMBwritebraw, 1, 0); LOG (("first request returned %ld\n", result)); if (result < 0) goto out; result = smb_request_write_raw (server, data + len, count - len); LOG(("raw request returned %ld\n", result)); if (result > 0) { int error; /* We have to do the checks of smb_request_ok here as well */ if ((error = smb_valid_packet (server->packet)) != 0) { LOG (("not a valid packet!\n")); result = error; } else if (server->rcls != 0) { result = -smb_errno (server->rcls, server->err); } else if ((error = smb_verify (server->packet, SMBwritec, 1, 0)) != 0) { LOG (("smb_verify failed\n")); result = error; } /* If everything went fine, the whole block has been transfered. */ if (result == (count - len)) result = count; } out: return result; } int smb_proc_lseek (struct smb_server *server, struct smb_dirent *finfo, off_t offset, int mode, off_t * new_position_ptr) { char *buf = server->packet; int error; retry: smb_setup_header (server, SMBlseek, 4,0); WSET (buf, smb_vwv0, finfo->fileid); WSET (buf, smb_vwv1, mode); DSET (buf, smb_vwv2, offset); if ((error = smb_request_ok (server, SMBlseek, 1, 0)) < 0) { if (smb_retry (server)) goto retry; } else { (*new_position_ptr) = DVAL(buf, smb_vwv0); } return error; } /* smb_proc_lockingX: We don't chain any further packets to the initial one */ int smb_proc_lockingX (struct smb_server *server, struct smb_dirent *finfo, struct smb_lkrng *locks, int num_entries, int mode, long timeout) { int result; int num_locks, num_unlocks; char *buf = server->packet; char *data; struct smb_lkrng *p; int i; num_locks = num_unlocks = 0; if (mode & 2) num_unlocks = num_entries; else num_locks = num_entries; retry: data = smb_setup_header(server, SMBlockingX, 8, num_entries * 10); BSET (buf, smb_vwv0, 0xFF); WSET (buf, smb_vwv1, 0); WSET (buf, smb_vwv2, finfo->fileid); BSET (buf, smb_vwv3, mode & 1); DSET (buf, smb_vwv4, timeout); WSET (buf, smb_vwv6, num_unlocks); WSET (buf, smb_vwv7, num_locks); for (i = 0, p = locks; i < num_entries; i++, p++) { WSET (data, SMB_LPID_OFFSET(i), 0); /* server->pid */ DSET (data, SMB_LKOFF_OFFSET(i), p->offset); DSET (data, SMB_LKLEN_OFFSET(i), p->len); } if ((result = smb_request_ok (server, SMBlockingX, 0, 0)) < 0) { if (smb_retry (server)) goto retry; } return result; } /* smb_proc_do_create: We expect entry->attry & entry->ctime to be set. */ static int smb_proc_do_create (struct smb_server *server, const char *path, int len, struct smb_dirent *entry, word command) { int error; char *p; char *buf = server->packet; int local_time; retry: p = smb_setup_header (server, command, 3, len + 2); WSET (buf, smb_vwv0, entry->attr); local_time = utc2local (entry->ctime); DSET (buf, smb_vwv1, local_time); smb_encode_ascii (p, path, len); if ((error = smb_request_ok (server, command, 1, 0)) < 0) { if (smb_retry (server)) goto retry; goto out; } entry->opened = 1; entry->fileid = WVAL (buf, smb_vwv0); smb_proc_close (server, entry->fileid, entry->mtime); out: return error; } int smb_proc_create (struct smb_server *server, const char *path, int len, struct smb_dirent *entry) { return smb_proc_do_create (server, path, len, entry, SMBcreate); } int smb_proc_mv (struct smb_server *server, const char *opath, const int olen, const char *npath, const int nlen) { char *p; char *buf = server->packet; int result; retry: p = smb_setup_header (server, SMBmv, 1, olen + nlen + 4); WSET (buf, smb_vwv0, 0); p = smb_encode_ascii (p, opath, olen); smb_encode_ascii (p, npath, olen); if ((result = smb_request_ok (server, SMBmv, 0, 0)) < 0) { if (smb_retry (server)) goto retry; } return result; } int smb_proc_mkdir (struct smb_server *server, const char *path, const int len) { char *p; int result; retry: p = smb_setup_header (server, SMBmkdir, 0, 2 + len); smb_encode_ascii (p, path, len); if ((result = smb_request_ok (server, SMBmkdir, 0, 0)) < 0) { if (smb_retry (server)) goto retry; } return result; } int smb_proc_rmdir (struct smb_server *server, const char *path, const int len) { char *p; int result; retry: p = smb_setup_header (server, SMBrmdir, 0, 2 + len); smb_encode_ascii (p, path, len); if ((result = smb_request_ok (server, SMBrmdir, 0, 0)) < 0) { if (smb_retry (server)) goto retry; } return result; } int smb_proc_unlink (struct smb_server *server, const char *path, const int len) { char *p; char *buf = server->packet; int result; retry: p = smb_setup_header (server, SMBunlink, 1, 2 + len); WSET (buf, smb_vwv0, 0); smb_encode_ascii (p, path, len); if ((result = smb_request_ok (server, SMBunlink, 0, 0)) < 0) { if (smb_retry (server)) goto retry; } return result; } int smb_proc_trunc (struct smb_server *server, word fid, dword length) { char *p; char *buf = server->packet; int result; p = smb_setup_header (server, SMBwrite, 5, 3); WSET (buf, smb_vwv0, fid); WSET (buf, smb_vwv1, 0); DSET (buf, smb_vwv2, length); WSET (buf, smb_vwv4, 0); smb_encode_ascii (p, "", 0); result = smb_request_ok (server, SMBwrite, 1, 0); if (result >= 0) result = DVAL(buf, smb_vwv0); return result; } static char * smb_decode_dirent (char *p, struct smb_dirent *entry) { size_t name_size; p += SMB_STATUS_SIZE; /* reserved (search_status) */ entry->attr = BVAL (p, 0); entry->mtime = entry->atime = entry->ctime = date_dos2unix (WVAL (p, 1), WVAL (p, 3)); entry->size = DVAL (p, 5); name_size = 13; if(name_size > entry->complete_path_size-1) name_size = entry->complete_path_size-1; memcpy (entry->complete_path, p + 9, name_size); entry->complete_path[name_size] = '\0'; LOG (("smb_decode_dirent: path = %s\n", entry->complete_path)); return p + 22; } /* This routine is used to read in directory entries from the network. Note that it is for short directory name seeks, i.e.: protocol < PROTOCOL_LANMAN2 */ static int smb_proc_readdir_short (struct smb_server *server, char *path, int fpos, int cache_size, struct smb_dirent *entry) { char *p; char *buf; int error; int result = 0; int i; int first, total_count; struct smb_dirent *current_entry; word bcc; word count; char status[SMB_STATUS_SIZE]; int entries_asked = (server->max_xmit - 100) / SMB_DIRINFO_SIZE; int dirlen = strlen (path); char * mask; mask = malloc(dirlen + 4 + 1); if (mask == NULL) { result = (-ENOMEM); goto out; } strcpy (mask, path); strcat (mask, "\\*.*"); LOG (("SMB call readdir %ld @ %ld\n", cache_size, fpos)); LOG ((" mask = %s\n", mask)); buf = server->packet; retry: first = 1; total_count = 0; current_entry = entry; while (1) { if (first == 1) { p = smb_setup_header (server, SMBsearch, 2, 5 + strlen (mask)); WSET (buf, smb_vwv0, entries_asked); WSET (buf, smb_vwv1, aDIR); p = smb_encode_ascii (p, mask, strlen (mask)); (*p++) = 5; (void) smb_encode_word (p, 0); } else { p = smb_setup_header (server, SMBsearch, 2, 5 + SMB_STATUS_SIZE); WSET (buf, smb_vwv0, entries_asked); WSET (buf, smb_vwv1, aDIR); p = smb_encode_ascii (p, "", 0); (void) smb_encode_vblock (p, status, SMB_STATUS_SIZE, 0); } if ((error = smb_request_ok (server, SMBsearch, 1, -1)) < 0) { if ((server->rcls == ERRDOS) && (server->err == ERRnofiles)) { result = total_count - fpos; goto unlock_return; } else { if (smb_retry (server)) goto retry; result = error; goto unlock_return; } } p = SMB_VWV (server->packet); p = smb_decode_word (p, &count); /* vwv[0] = count-returned */ p = smb_decode_word (p, &bcc); first = 0; if (count <= 0) { result = total_count - fpos; goto unlock_return; } if (bcc != count * SMB_DIRINFO_SIZE + 3) { result = -EIO; goto unlock_return; } p += 3; /* Skipping VBLOCK header (5, length lo, length hi). */ /* Read the last entry into the status field. */ memcpy (status, SMB_BUF (server->packet) + 3 + (count - 1) * SMB_DIRINFO_SIZE, SMB_STATUS_SIZE); /* Now we are ready to parse smb directory entries. */ for (i = 0; i < count; i++) { if (total_count < fpos) { p += SMB_DIRINFO_SIZE; LOG (("smb_proc_readdir: skipped entry; total_count = %ld, i = %ld, fpos = %ld\n", total_count, i, fpos)); } else if (total_count >= fpos + cache_size) { result = total_count - fpos; goto unlock_return; } else { p = smb_decode_dirent (p, current_entry); current_entry += 1; } total_count += 1; } } unlock_return: if(mask != NULL) free(mask); out: return result; } /*****************************************************************************/ #define MAX_DIGITS 4 /* NOTE: this is actually a hard-coded value (see below) */ /* Multiprecision arithmetics for beginners; we use 64 bits, chopped * into 16 bit pieces each. That allows us to comfortably execute all * calculations with 'long' arguments and not get into trouble because * of overflows and carry bits that don't exist. The assumption is that * the size of a 'long' is twice as large as that of a 'short'. */ struct digits { unsigned short d[MAX_DIGITS]; }; /* Divide a multiprecision number by a positive integer. This is * essentially the division by a single "digit", as described in * Donald E. Knuth's "The Art of Computer Programming, Volume 2 * Seminumerical Algorithms", 3rd edition, page 625 as the answer * to exercise 16 on page 282 in section 4.3.1. We don't really * need the more complex version since we just need to divide by * 10,000 and then by 1,000. The complex version is much more * complex than calling this division routine twice. */ static void divide_by(struct digits * q,unsigned long d) { int m; m = MAX_DIGITS; while(m > 0 && q->d[m-1] == 0) m--; if(m > 0) { unsigned long r,s; int j; r = 0; j = m - 1; do { r <<= 16; s = (r + q->d[j]); q->d[j] = s / d; r = s % d; } while(--j >= 0); } } /* This is an application of algorithm S ('Subtraction of * non-negative integers') described in Donald E. Knuth's * "The Art of Computer Programming, Volume 2 / Seminumerical * Algorithms", 3rd edition, page 267. */ static long subtract_number(struct digits * u,unsigned long v) { long d; /* This implementation takes advantage of the fact that * the 'width' of 'v' (64 bits) is just half the size of * 'u' (32 bits), which allows us to unroll the loop and * leave out some of the arguments which would not * contribute to the result anyway. */ /* First round */ d = ((long)u->d[0]) - (long)(v & 0xFFFF); u->d[0] = d; /* Second round */ d = ((long)u->d[1]) - ((long)((v >> 16) & 0xFFFF)) - (d < 0); u->d[1] = d; /* Third round */ d = ((long)u->d[2]) - (d < 0); u->d[2] = d; /* Fourth round */ d = ((long)u->d[3]) - (d < 0); u->d[3] = d; return(d < 0); } /* Interpret an 8 byte "filetime" structure to a 'time_t'. * It's originally in "100ns units since jan 1st 1601". * * Unlike the Samba implementation of that date conversion * algorithm this one tries to perform the entire * calculation using integer operations only. */ static time_t interpret_long_date(char * p) { unsigned long hi,lo; struct digits d; time_t result; int i,k; /* Extract the 64 bit time value. */ lo = DVAL(p,0); hi = DVAL(p,4); /* Chop the time into handy 16 bit chunks. */ d.d[3] = hi >> 16; d.d[2] = hi & 0xFFFF; d.d[1] = lo >> 16; d.d[0] = lo & 0xFFFF; /* Divide by 10,000,000 in two easy pieces. */ divide_by(&d,10000); divide_by(&d,1000); /* Adjust by 369 years (11,644,473,600 seconds). */ k = 0; for(i = 0 ; k == 0 && i < 4 ; i++) k += subtract_number(&d,2911118400UL); /* If the result did not produce an underflow or overflow, * return the number of seconds encoded in the two least * significant 'digits'. */ if(k == 0 && d.d[3] == 0 && d.d[2] == 0) result = (time_t)((((unsigned long)d.d[1]) << 16) + d.d[0]); else result = 0; return(result); } /*****************************************************************************/ static void smb_get_dirent_name(char *p,int level,char ** name_ptr,int * len_ptr) { switch (level) { case 1: /* OS/2 understands this */ (*name_ptr) = p + 27; (*len_ptr) = strlen(p + 27); break; case 2: /* this is what OS/2 uses */ (*name_ptr) = p + 31; (*len_ptr) = strlen(p + 31); break; case 260: /* NT uses this, but also accepts 2 */ (*name_ptr) = p + 94; (*len_ptr) = min (DVAL (p+60, 0), SMB_MAXNAMELEN); break; default: (*name_ptr) = NULL; (*len_ptr) = 0; break; } } /* interpret a long filename structure - this is mostly guesses at the moment. The length of the structure is returned. The structure of a long filename depends on the info level. 260 is used by NT and 2 is used by OS/2. */ static char * smb_decode_long_dirent (char *p, struct smb_dirent *finfo, int level) { char *result; switch (level) { case 1: /* OS/2 understands this */ #if DEBUG { char buffer[255]; memcpy(buffer,p + 27,sizeof(buffer)-1); buffer[sizeof(buffer)-1] = '\0'; LOG(("type=%ld, name='%s'\n",level,buffer)); } #endif /* DEBUG */ if (finfo != NULL) { strlcpy (finfo->complete_path, p + 27, finfo->complete_path_size); finfo->len = strlen (finfo->complete_path); finfo->size = DVAL (p, 16); finfo->attr = BVAL (p, 24); finfo->ctime = date_dos2unix (WVAL (p, 6), WVAL (p, 4)); finfo->atime = date_dos2unix (WVAL (p, 10), WVAL (p, 8)); finfo->mtime = date_dos2unix (WVAL (p, 14), WVAL (p, 12)); } result = p + 28 + BVAL (p, 26); break; case 2: /* this is what OS/2 uses */ #if DEBUG { char buffer[255]; memcpy(buffer,p + 31,sizeof(buffer)-1); buffer[sizeof(buffer)-1] = '\0'; LOG(("type=%ld, name='%s'\n",level,buffer)); } #endif /* DEBUG */ if (finfo != NULL) { strlcpy (finfo->complete_path, p + 31, finfo->complete_path_size); finfo->len = strlen (finfo->complete_path); finfo->size = DVAL (p, 16); finfo->attr = BVAL (p, 24); finfo->ctime = date_dos2unix (WVAL (p, 6), WVAL (p, 4)); finfo->atime = date_dos2unix (WVAL (p, 10), WVAL (p, 8)); finfo->mtime = date_dos2unix (WVAL (p, 14), WVAL (p, 12)); } result = p + 32 + BVAL (p, 30); break; case 260: /* NT uses this, but also accepts 2 */ #if DEBUG { char buffer[255]; int len; len = min (DVAL (p+60, 0), sizeof(buffer)-1); memcpy(buffer,p+94,len); buffer[len] = '\0'; LOG(("type=%ld, name='%s'\n",level,buffer)); } #endif /* DEBUG */ result = p + WVAL (p, 0); if (finfo != NULL) { int namelen; p += 4; /* next entry offset */ p += 4; /* fileindex */ finfo->ctime = interpret_long_date(p); p += 8; finfo->atime = interpret_long_date(p); p += 8; p += 8; /* write time */ finfo->mtime = interpret_long_date(p); p += 8; finfo->size = DVAL (p, 0); p += 8; p += 8; /* alloc size */ finfo->attr = BVAL (p, 0); p += 4; namelen = min (DVAL (p, 0), SMB_MAXNAMELEN); p += 4; p += 4; /* EA size */ p += 2; /* short name len? */ p += 24; /* short name? */ if(namelen > (int)finfo->complete_path_size-1) namelen = finfo->complete_path_size-1; memcpy (finfo->complete_path, p, namelen); finfo->complete_path[namelen] = '\0'; finfo->len = namelen; } break; default: if (finfo != NULL) { /* I have to set times to 0 here, because I do not have specs about this for all info levels. */ finfo->ctime = finfo->mtime = finfo->atime = 0; } LOG (("Unknown long filename format %ld\n", level)); result = p + WVAL (p, 0); break; } return result; } static int smb_proc_readdir_long (struct smb_server *server, char *path, int fpos, int cache_size, struct smb_dirent *entry) { int max_matches = 512; /* this should actually be based on the max_xmit value */ /* NT uses 260, OS/2 uses 2. Both accept 1. */ int info_level = server->protocol < PROTOCOL_NT1 ? 1 : 260; char *p; int i; int first; int total_count = 0; struct smb_dirent *current_entry; char *resp_data; char *resp_param; int resp_data_len = 0; int resp_param_len = 0; int attribute = aSYSTEM | aHIDDEN | aDIR; int result; int error = 0; int ff_searchcount; int ff_eos = 0; int ff_dir_handle = 0; int ff_resume_key = 0; int loop_count = 0; unsigned char *outbuf = server->packet; int dirlen = strlen (path) + 2 + 1; char *mask; int masklen; ENTER(); /* ZZZ experimental 'max_matches' adjustment */ /* if(info_level == 260) max_matches = server->max_xmit / 360; else max_matches = server->max_xmit / 40; */ SHOWVALUE(server->max_xmit); SHOWVALUE(max_matches); mask = malloc (dirlen); if (mask == NULL) { LOG (("Memory allocation failed\n")); error = (-ENOMEM); SHOWVALUE(error); goto out; } strcpy (mask, path); strcat (mask, "\\*"); masklen = strlen (mask); LOG (("SMB call lreaddir %ld @ %ld\n", cache_size, fpos)); LOG ((" mask = %s\n", mask)); resp_param = NULL; resp_data = NULL; retry: first = 1; total_count = 0; current_entry = entry; while (ff_eos == 0) { loop_count++; if (loop_count > 200) { LOG (("smb_proc_readdir_long: Looping in FIND_NEXT???\n")); error = -EIO; SHOWVALUE(error); break; } memset (outbuf, 0, 39); smb_setup_header (server, SMBtrans2, 15, 5 + 12 + masklen + 1); WSET (outbuf, smb_tpscnt, 12 + masklen + 1); WSET (outbuf, smb_tdscnt, 0); WSET (outbuf, smb_mprcnt, 10); WSET (outbuf, smb_mdrcnt, server->max_xmit); WSET (outbuf, smb_msrcnt, 0); WSET (outbuf, smb_flags, 0); DSET (outbuf, smb_timeout, 0); WSET (outbuf, smb_pscnt, WVAL (outbuf, smb_tpscnt)); WSET (outbuf, smb_psoff, ((SMB_BUF (outbuf) + 3) - outbuf) - 4); WSET (outbuf, smb_dscnt, 0); WSET (outbuf, smb_dsoff, 0); WSET (outbuf, smb_suwcnt, 1); WSET (outbuf, smb_setup0, first == 1 ? TRANSACT2_FINDFIRST : TRANSACT2_FINDNEXT); p = SMB_BUF (outbuf); (*p++) = 0; /* put in a null smb_name */ (*p++) = 'D'; (*p++) = ' '; /* this was added because OS/2 does it */ if (first != 0) { LOG (("first match\n")); WSET (p, 0, attribute); /* attribute */ WSET (p, 2, max_matches); /* max count */ WSET (p, 4, 8 + 4 + 2); /* resume required + close on end + continue */ WSET (p, 6, info_level); DSET (p, 8, 0); } else { LOG (("next match; ff_dir_handle=0x%lx ff_resume_key=%ld mask='%s'\n", ff_dir_handle, ff_resume_key, mask)); WSET (p, 0, ff_dir_handle); WSET (p, 2, max_matches); /* max count */ WSET (p, 4, info_level); DSET (p, 6, ff_resume_key); WSET (p, 10, 8 + 4 + 2); /* resume required + close on end + continue */ } p += 12; if(masklen > 0) memcpy (p, mask, masklen); p += masklen; (*p++) = 0; (*p) = 0; result = smb_trans2_request (server, &resp_data_len, &resp_param_len, &resp_data, &resp_param); LOG (("smb_proc_readdir_long: smb_trans2_request returns %ld\n", result)); if (result < 0) { if (smb_retry (server)) goto retry; LOG (("smb_proc_readdir_long: got error from trans2_request\n")); error = result; SHOWVALUE(error); break; } /* Apparently, there is a bug in Windows 95 and friends which causes the directory read attempt to fail if you're asking for too much data too fast... */ if(server->rcls == ERRSRV && server->err == ERRerror) { SHOWMSG("ouch; delaying and retrying"); Delay(TICKS_PER_SECOND / 5); continue; } if (server->rcls != 0) { LOG (("server->rcls = %ld err = %ld\n",server->rcls, server->err)); error = smb_errno (server->rcls, server->err); SHOWVALUE(error); break; } /* ZZZ bail out if this is empty. */ if (resp_param == NULL) break; /* parse out some important return info */ p = resp_param; if (first != 0) { ff_dir_handle = WVAL (p, 0); ff_searchcount = WVAL (p, 2); ff_eos = WVAL (p, 4); } else { ff_searchcount = WVAL (p, 0); ff_eos = WVAL (p, 2); } LOG (("received %ld entries (eos=%ld)\n",ff_searchcount, ff_eos)); if (ff_searchcount == 0) break; /* ZZZ bail out if this is empty. */ if (resp_data == NULL) break; /* point to the data bytes */ p = resp_data; /* Now we are ready to parse smb directory entries. */ for (i = 0; i < ff_searchcount; i++) { if(i == ff_searchcount - 1) { char * last_name; int len; ff_resume_key = DVAL(p, 0); smb_get_dirent_name(p,info_level,&last_name,&len); if(len > 0) { #if DEBUG { char buffer[SMB_MAXNAMELEN+1]; memcpy(buffer,last_name,len); buffer[len] = '\0'; LOG(("last name = '%s'\n",buffer)); } #endif /* DEBUG */ if(len + 1 > dirlen) { D(("increasing mask; old value = %ld new value = %ld",dirlen,len+1)); if(mask != NULL) free (mask); dirlen = len + 1; SHOWVALUE(dirlen); mask = malloc (dirlen); if (mask == NULL) { LOG (("smb_proc_readdir_long: Memory allocation failed\n")); error = -ENOMEM; SHOWVALUE(error); goto fail; } } memcpy (mask, last_name, len); mask[len] = '\0'; masklen = len; } else { masklen = 0; } } if (total_count < fpos) { p = smb_decode_long_dirent (p, NULL, info_level); LOG (("smb_proc_readdir: skipped entry; total_count = %ld, i = %ld, fpos = %ld\n",total_count, i, fpos)); } else if (total_count >= fpos + cache_size) { p = smb_decode_long_dirent (p, NULL, info_level); LOG (("smb_proc_readdir: skipped entry; total_count = %ld, i = %ld, fpos = %ld\n",total_count, i, fpos)); continue; } else { p = smb_decode_long_dirent (p, current_entry, info_level); current_entry += 1; } total_count += 1; } SHOWVALUE(ff_resume_key); if (resp_data != NULL) { free (resp_data); resp_data = NULL; } if (resp_param != NULL) { free (resp_param); resp_param = NULL; } first = 0; if (ff_searchcount > 0) loop_count = 0; } fail: /* finished: not needed any more */ if (mask != NULL) free (mask); if (resp_data != NULL) free (resp_data); if (resp_param != NULL) free (resp_param); out: if(error < 0) { RETURN(error); return(error); } else { RETURN (total_count - fpos); return (total_count - fpos); } } int smb_proc_readdir (struct smb_server *server, char *path, int fpos, int cache_size, struct smb_dirent *entry) { int result; if (server->protocol >= PROTOCOL_LANMAN2) result = smb_proc_readdir_long (server, path, fpos, cache_size, entry); else result = smb_proc_readdir_short (server, path, fpos, cache_size, entry); return result; } int smb_proc_getattr_core (struct smb_server *server, const char *path, int len, struct smb_dirent *entry) { int result; char *p; char *buf = server->packet; LOG (("smb_proc_getattr: %s\n", path)); retry: p = smb_setup_header (server, SMBgetatr, 0, 2 + len); smb_encode_ascii (p, path, len); if ((result = smb_request_ok (server, SMBgetatr, 10, 0)) < 0) { if (smb_retry (server)) goto retry; goto out; } entry->attr = WVAL (buf, smb_vwv0); /* The server only tells us 1 time */ entry->ctime = entry->atime = entry->mtime = local2utc (DVAL (buf, smb_vwv1)); entry->size = DVAL (buf, smb_vwv3); out: return result; } /* smb_proc_getattrE: entry->fid must be valid */ int smb_proc_getattrE (struct smb_server *server, struct smb_dirent *entry) { char *buf = server->packet; int result; smb_setup_header_exclusive (server, SMBgetattrE, 1, 0); WSET (buf, smb_vwv0, entry->fileid); if ((result = smb_request_ok (server, SMBgetattrE, 11, 0)) < 0) goto out; entry->ctime = date_dos2unix (WVAL (buf, smb_vwv1), WVAL (buf, smb_vwv0)); entry->atime = date_dos2unix (WVAL (buf, smb_vwv3), WVAL (buf, smb_vwv2)); entry->mtime = date_dos2unix (WVAL (buf, smb_vwv5), WVAL (buf, smb_vwv4)); entry->size = DVAL (buf, smb_vwv6); entry->attr = WVAL (buf, smb_vwv10); out: return result; } /* In core protocol, there is only 1 time to be set, we use entry->mtime, to make touch work. */ int smb_proc_setattr_core (struct smb_server *server, const char *path, int len, struct smb_dirent *new_finfo) { char *p; char *buf = server->packet; int result; int local_time; retry: LOG (("smb_proc_setattr_core\n")); p = smb_setup_header (server, SMBsetatr, 8, 4 + len); WSET (buf, smb_vwv0, new_finfo->attr); local_time = utc2local (new_finfo->mtime); DSET (buf, smb_vwv1, local_time); p = smb_encode_ascii (p, path, len); (void) smb_encode_ascii (p, "", 0); if ((result = smb_request_ok (server, SMBsetatr, 0, 0)) < 0) { if (smb_retry (server)) goto retry; } return result; } /* smb_proc_setattrE: we do not retry here, because we rely on fid, which would not be valid after a retry. */ int smb_proc_setattrE (struct smb_server *server, word fid, struct smb_dirent *new_entry) { char *buf = server->packet; word date, time_value; int result; LOG (("smb_proc_setattrE\n")); smb_setup_header_exclusive (server, SMBsetattrE, 7, 0); WSET (buf, smb_vwv0, fid); date_unix2dos (new_entry->ctime, &time_value, &date); WSET (buf, smb_vwv1, date); WSET (buf, smb_vwv2, time_value); date_unix2dos (new_entry->atime, &time_value, &date); WSET (buf, smb_vwv3, date); WSET (buf, smb_vwv4, time_value); date_unix2dos (new_entry->mtime, &time_value, &date); WSET (buf, smb_vwv5, date); WSET (buf, smb_vwv6, time_value); result = smb_request_ok_unlock (server, SMBsetattrE, 0, 0); return result; } int smb_proc_dskattr (struct smb_server *server, struct smb_dskattr *attr) { int error; char *p; retry: smb_setup_header (server, SMBdskattr, 0, 0); if ((error = smb_request_ok (server, SMBdskattr, 5, 0)) < 0) { if (smb_retry (server)) goto retry; goto out; } 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); (void) smb_decode_word (p, &attr->free); out: return error; } /***************************************************************************** * * 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. */ static int smb_proc_reconnect (struct smb_server *server) { static const struct smb_prots prots[] = { {PROTOCOL_CORE, "PC NETWORK PROGRAM 1.0"}, {PROTOCOL_COREPLUS, "MICROSOFT NETWORKS 1.03"}, {PROTOCOL_LANMAN1, "MICROSOFT NETWORKS 3.0"}, {PROTOCOL_LANMAN1, "LANMAN1.0"}, {PROTOCOL_LANMAN2, "LM1.2X002"}, {PROTOCOL_NT1, "NT LM 0.12"}, {PROTOCOL_NT1, "NT LANMAN 1.0"}, {-1, NULL} }; char dev[] = "A:"; int i, plength; int max_xmit = 1024; /* Space needed for first request. */ int given_max_xmit = server->mount_data.max_xmit; int result; word any_word; byte *p; unsigned char password[24]; int password_len; unsigned char nt_password[24]; int nt_password_len; unsigned char full_share[SMB_MAXNAMELEN+1]; int full_share_len; byte *packet; if (server->max_recv <= 0) server->max_recv = given_max_xmit > 8000 ? given_max_xmit : 8000; if ((result = smb_connect (server)) < 0) { LOG (("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) free (server->packet); server->packet = malloc (server->max_recv); if (server->packet == NULL) { LOG (("smb_proc_connect: No memory! Bailing out.\n")); result = -ENOMEM; goto fail; } packet = server->packet; server->max_xmit = max_xmit; /* Start with an RFC1002 session request packet. */ p = packet + 4; p = smb_name_mangle (p, server->mount_data.server_name); p = smb_name_mangle (p, server->mount_data.client_name); smb_encode_smb_length (packet, (byte *) p - (byte *) (packet)); packet[0] = 0x81; /* SESSION REQUEST */ if ((result = smb_request (server)) < 0) { LOG (("smb_proc_connect: Failed to send SESSION REQUEST.\n")); goto fail; } if (packet[0] != 0x82) { LOG (("smb_proc_connect: Did not receive positive response (err = %lx)\n",packet[0])); #if DEBUG { smb_dump_packet (packet); } #endif /* DEBUG */ result = -EIO; goto fail; } LOG (("smb_proc_connect: Passed SESSION REQUEST.\n")); /* Now we are ready to send a SMB Negotiate Protocol packet. */ memset (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 (packet); for (i = 0; prots[i].name != NULL; i++) p = smb_encode_dialect (p, prots[i].name, strlen (prots[i].name)); LOG (("smb_proc_connect: Request SMBnegprot...\n")); if ((result = smb_request_ok (server, SMBnegprot, 1, -1)) < 0) { LOG (("smb_proc_connect: Failure requesting SMBnegprot\n")); goto fail; } LOG (("Verified!\n")); p = SMB_VWV (packet); p = smb_decode_word (p, &any_word); i = any_word; server->protocol = prots[i].prot; LOG (("smb_proc_connect: Server wants %s protocol.\n",prots[i].name)); if (server->protocol > PROTOCOL_LANMAN1) { int user_len = strlen (server->mount_data.username)+1; LOG (("smb_proc_connect: password = %s\n",server->mount_data.password)); LOG (("smb_proc_connect: usernam = %s\n",server->mount_data.username)); LOG (("smb_proc_connect: blkmode = %ld\n",WVAL (packet, smb_vwv5))); if (server->protocol >= PROTOCOL_NT1) { server->maxxmt = DVAL (packet, smb_vwv3 + 1); server->blkmode = DVAL (packet, smb_vwv9 + 1); server->sesskey = DVAL (packet, smb_vwv7 + 1); server->security_mode = BVAL(packet, smb_vwv1); memcpy(server->crypt_key,SMB_BUF(packet),8); } else { server->maxxmt = WVAL (packet, smb_vwv2); server->blkmode = WVAL (packet, smb_vwv5); server->sesskey = DVAL (packet, smb_vwv6); server->security_mode = BVAL(packet, smb_vwv1); memcpy(server->crypt_key,SMB_BUF(packet),8); } SHOWVALUE(server->security_mode); if(server->security_mode & 2) { SHOWMSG("encrypted passwords required"); memset(password,0,sizeof(password)); strlcpy(password,server->mount_data.password,sizeof(password)); smb_encrypt(password,server->crypt_key,password); password_len = 24; PRINTHEADER(); PRINTF(("password: ")); for(i = 0 ; i < 24 ; i++) PRINTF(("%02lx ",password[i])); PRINTF(("\n")); memset(nt_password,0,sizeof(nt_password)); strlcpy(nt_password,server->mount_data.password,sizeof(nt_password)); smb_nt_encrypt(nt_password,server->crypt_key,nt_password); nt_password_len = 24; PRINTHEADER(); PRINTF(("nt_password: ")); for(i = 0 ; i < 24 ; i++) PRINTF(("%02lx ",nt_password[i])); PRINTF(("\n")); PRINTHEADER(); PRINTF(("crypt_key: ")); for(i = 0 ; i < 8 ; i++) PRINTF(("%02lx ",server->crypt_key[i])); PRINTF(("\n")); } else { SHOWMSG("plain text passwords sufficient"); password_len = strlen(server->mount_data.password)+1; nt_password_len = 0; } /* If in share level security then don't send a password now */ if((server->security_mode & 1) == 0) { SHOWMSG("share level security; zapping passwords"); strcpy(password,""); password_len = 0; strcpy(nt_password,""); nt_password_len = 0; } SHOWVALUE(password_len); SHOWVALUE(nt_password_len); LOG (("smb_proc_connect: workgroup = %s\n", server->mount_data.workgroup_name)); if (server->protocol >= PROTOCOL_NT1) { char *OS_id = "AmigaOS"; char *client_id = "smbfs"; SHOWMSG("server->protocol >= PROTOCOL_NT1"); smb_setup_header (server, SMBsesssetupX, 13, user_len + password_len + nt_password_len + strlen (server->mount_data.workgroup_name)+1 + strlen (OS_id)+1 + strlen (client_id)+1); WSET (packet, smb_vwv0, 0xff); WSET (packet, smb_vwv2, given_max_xmit); WSET (packet, smb_vwv3, 2); WSET (packet, smb_vwv4, 0); /* server->pid */ DSET (packet, smb_vwv5, server->sesskey); WSET (packet, smb_vwv7, password_len); WSET (packet, smb_vwv8, nt_password_len); p = SMB_BUF (packet); if(nt_password_len != 0) { SHOWMSG("adding encrypted passwords"); memcpy (p, password, password_len); p += password_len; memcpy (p, nt_password, nt_password_len); p += nt_password_len; } else { SHOWMSG("adding plain text password"); memcpy (p, server->mount_data.password, password_len); p += password_len; } memcpy (p, server->mount_data.username, user_len); p += user_len; strcpy (p, server->mount_data.workgroup_name); p += strlen (p) + 1; strcpy (p, OS_id); p += strlen (p) + 1; strcpy (p, client_id); } else { smb_setup_header (server, SMBsesssetupX, 10, user_len + password_len); WSET (packet, smb_vwv0, 0xff); WSET (packet, smb_vwv1, 0); WSET (packet, smb_vwv2, given_max_xmit); WSET (packet, smb_vwv3, 2); WSET (packet, smb_vwv4, 0); /* server->pid */ DSET (packet, smb_vwv5, server->sesskey); WSET (packet, smb_vwv7, password_len); WSET (packet, smb_vwv8, 0); WSET (packet, smb_vwv9, 0); p = SMB_BUF (packet); memcpy (p, server->mount_data.password, password_len); p += password_len; memcpy (p, server->mount_data.username, user_len); } if ((result = smb_request_ok (server, SMBsesssetupX, 3, 0)) < 0) { LOG (("smb_proc_connect: SMBsessetupX failed\n")); goto fail; } smb_decode_word (packet + 32, &(server->server_uid)); } else { server->maxxmt = 0; server->blkmode = 0; server->sesskey = 0; password_len = strlen(server->mount_data.password)+1; nt_password_len = 0; } if(nt_password_len > 0) { strlcpy(full_share,"//",sizeof(full_share)); strlcat(full_share,server->mount_data.server_name,sizeof(full_share)); strlcat(full_share,"/",sizeof(full_share)); strlcat(full_share,server->mount_data.service,sizeof(full_share)); full_share_len = strlen(full_share); for(i = 0 ; i < full_share_len ; i++) { if(full_share[i] == '/') full_share[i] = '\\'; } StringToUpper(full_share); SHOWSTRING(full_share); memset (packet, 0, SMB_HEADER_LEN); smb_setup_header (server, SMBtconX, 4, password_len + full_share_len+1 + strlen(dev)+1); WSET (packet, smb_vwv0, 0xFF); WSET (packet, smb_vwv3, password_len); p = SMB_BUF (packet); if(nt_password_len > 0) memcpy(p,password,password_len); else memcpy (p, server->mount_data.password, password_len); p += password_len; memcpy(p,full_share,full_share_len+1); p += full_share_len+1; strcpy(p,dev); BSET(packet,smb_rcls,1); if ((result = smb_request_ok (server, SMBtconX, 3, 0)) < 0) { SHOWVALUE(SMB_WCT(packet)); LOG (("smb_proc_connect: SMBtconX not verified.\n")); goto fail; } SHOWVALUE(SMB_WCT(packet)); /* Changed, max_xmit hasn't been updated if a tconX message was send instead of tcon. */ if (server->maxxmt) server->max_xmit = server->maxxmt; server->tid = WVAL(packet,smb_tid); } else { /* Fine! We have a connection, send a tcon message. */ smb_setup_header (server, SMBtcon, 0, 6 + strlen (server->mount_data.service) + strlen (server->mount_data.password) + strlen (dev)); p = SMB_BUF (packet); p = smb_encode_ascii (p, server->mount_data.service, strlen (server->mount_data.service)); p = smb_encode_ascii (p, server->mount_data.password, strlen (server->mount_data.password)); (void) smb_encode_ascii (p, dev, strlen (dev)); if ((result = smb_request_ok (server, SMBtcon, 2, 0)) < 0) { LOG (("smb_proc_connect: SMBtcon not verified.\n")); goto fail; } LOG (("OK! Managed to set up SMBtcon!\n")); p = SMB_VWV (packet); p = smb_decode_word (p, &server->max_xmit); SHOWVALUE(server->max_xmit); /* Added by Brian Willette - We were ignoring the server's initial maxbuf value */ if (server->maxxmt != 0 && server->max_xmit > server->maxxmt) server->max_xmit = server->maxxmt; (void) smb_decode_word (p, &server->tid); } SHOWVALUE(server->max_xmit); /* Changed, max_xmit hasn't been updated if a tconX message was send instead of tcon. */ if (server->max_xmit > given_max_xmit) server->max_xmit = given_max_xmit; /* Ok, everything is fine. max_xmit does not include the TCP-SMB header of 4 bytes. */ if (server->max_xmit < 65535 - 4) server->max_xmit += 4; LOG (("max_xmit = %ld, tid = %ld\n", server->max_xmit, server->tid)); LOG (("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; result = smb_proc_reconnect (server); if ((result < 0) && (server->packet != NULL)) { free (server->packet); server->packet = NULL; } return result; } /* error code stuff - put together by Merik Karman merik@blackadder.dsh.oz.au */ typedef struct { char *name; int code; char *message; } err_code_struct; /* Dos Error Messages */ static const err_code_struct dos_msgs[] = { {"ERRbadfunc", 1, "Invalid function"}, {"ERRbadfile", 2, "File not found"}, {"ERRbadpath", 3, "Directory invalid"}, {"ERRnofids", 4, "No file descriptors available"}, {"ERRnoaccess", 5, "Access denied"}, {"ERRbadfid", 6, "Invalid file handle"}, {"ERRbadmcb", 7, "Memory control blocks destroyed"}, {"ERRnomem", 8, "Insufficient server memory to perform the requested function"}, {"ERRbadmem", 9, "Invalid memory block address"}, {"ERRbadenv", 10, "Invalid environment"}, {"ERRbadformat", 11, "Invalid format"}, {"ERRbadaccess", 12, "Invalid open mode"}, {"ERRbaddata", 13, "Invalid data"}, {"ERR", 14, "reserved"}, {"ERRbaddrive", 15, "Invalid drive specified"}, {"ERRremcd", 16, "A Delete Directory request attempted to remove the server's current directory"}, {"ERRdiffdevice", 17, "Not same device"}, {"ERRnofiles", 18, "A File Search command can find no more files matching the specified criteria"}, {"ERRbadshare", 32, "The sharing mode specified for an Open conflicts with existing FIDs on the file"}, {"ERRlock", 33, "A Lock request conflicted with an existing lock or specified an invalid mode, or an Unlock requested attempted to remove a lock held by another process"}, {"ERRfilexists", 80, "The file named in a Create Directory, Make New File or Link request already exists"}, {"ERRbadpipe", 230, "Pipe invalid"}, {"ERRpipebusy", 231, "All instances of the requested pipe are busy"}, {"ERRpipeclosing", 232, "Pipe close in progress"}, {"ERRnotconnected", 233, "No process on other end of pipe"}, {"ERRmoredata", 234, "There is more data to be returned"}, {NULL, -1, NULL} }; /* Server Error Messages */ static const err_code_struct server_msgs[] = { {"ERRerror", 1, "Non-specific error code"}, {"ERRbadpw", 2, "Bad password - name/password pair in a Tree Connect or Session Setup are invalid"}, {"ERRbadtype", 3, "reserved"}, {"ERRaccess", 4, "The requester does not have the necessary access rights within the specified context for the requested function. The context is defined by the TID or the UID"}, {"ERRinvnid", 5, "The tree ID (TID) specified in a command was invalid"}, {"ERRinvnetname", 6, "Invalid network name in tree connect"}, {"ERRinvdevice", 7, "Invalid device - printer request made to non-printer connection or non-printer request made to printer connection"}, {"ERRqfull", 49, "Print queue full (files) -- returned by open print file"}, {"ERRqtoobig", 50, "Print queue full -- no space"}, {"ERRqeof", 51, "EOF on print queue dump"}, {"ERRinvpfid", 52, "Invalid print file FID"}, {"ERRsmbcmd", 64, "The server did not recognize the command received"}, {"ERRsrverror", 65, "The server encountered an internal error, e.g., system file unavailable"}, {"ERRfilespecs", 67, "The file handle (FID) and pathname parameters contained an invalid combination of values"}, {"ERRreserved", 68, "reserved"}, {"ERRbadpermits", 69, "The access permissions specified for a file or directory are not a valid combination. The server cannot set the requested attribute"}, {"ERRreserved", 70, "reserved"}, {"ERRsetattrmode", 71, "The attribute mode in the Set File Attribute request is invalid"}, {"ERRpaused", 81, "Server is paused"}, {"ERRmsgoff", 82, "Not receiving messages"}, {"ERRnoroom", 83, "No room to buffer message"}, {"ERRrmuns", 87, "Too many remote user names"}, {"ERRtimeout", 88, "Operation timed out"}, {"ERRnoresource", 89, "No resources currently available for request"}, {"ERRtoomanyuids", 90, "Too many UIDs active on this session"}, {"ERRbaduid", 91, "The UID is not known as a valid ID on this session"}, {"ERRusempx", 250, "Temp unable to support Raw, use MPX mode"}, {"ERRusestd", 251, "Temp unable to support Raw, use standard read/write"}, {"ERRcontmpx", 252, "Continue in MPX mode"}, {"ERRreserved", 253, "reserved"}, {"ERRreserved", 254, "reserved"}, {"ERRnosupport", 0xFFFF, "Function not supported"}, {NULL, -1, NULL} }; /* Hard Error Messages */ static const err_code_struct hard_msgs[] = { {"ERRnowrite", 19, "Attempt to write on write-protected diskette"}, {"ERRbadunit", 20, "Unknown unit"}, {"ERRnotready", 21, "Drive not ready"}, {"ERRbadcmd", 22, "Unknown command"}, {"ERRdata", 23, "Data error (CRC)"}, {"ERRbadreq", 24, "Bad request structure length"}, {"ERRseek", 25, "Seek error"}, {"ERRbadmedia", 26, "Unknown media type"}, {"ERRbadsector", 27, "Sector not found"}, {"ERRnopaper", 28, "Printer out of paper"}, {"ERRwrite", 29, "Write fault"}, {"ERRread", 30, "Read fault"}, {"ERRgeneral", 31, "General failure"}, {"ERRbadshare", 32, "A open conflicts with an existing open"}, {"ERRlock", 33, "A Lock request conflicted with an existing lock or specified an invalid mode, or an Unlock requested attempted to remove a lock held by another process"}, {"ERRwrongdisk", 34, "The wrong disk was found in a drive"}, {"ERRFCBUnavail", 35, "No FCBs are available to process request"}, {"ERRsharebufexc", 36, "A sharing buffer has been exceeded"}, {NULL, -1, NULL} }; typedef struct { int code; char *class; const err_code_struct *err_msgs; } err_class_struct; static const err_class_struct err_classes[] = { { 0, "SUCCESS", NULL }, { 0x01, "ERRDOS", dos_msgs }, { 0x02, "ERRSRV", server_msgs }, { 0x03, "ERRHRD", hard_msgs }, { 0x04, "ERRXOS", NULL }, { 0xE1, "ERRRMX1", NULL }, { 0xE2, "ERRRMX2", NULL }, { 0xE3, "ERRRMX3", NULL }, { 0xFF, "ERRCMD", NULL }, { -1, NULL, NULL } }; static void smb_printerr (int class, int num) { int i, j; err_code_struct *err; for (i = 0; err_classes[i].class; i++) { if (err_classes[i].code != class) continue; if (!err_classes[i].err_msgs) { ReportError("%s - %ld.", err_classes[i].class, num); LOG (("%s - %ld\n", err_classes[i].class, num)); return; } err = (err_code_struct *)err_classes[i].err_msgs; for (j = 0; err[j].name; j++) { if (num != err[j].code) continue; ReportError ("%s - %s (%s).", err_classes[i].class, err[j].name, err[j].message); LOG (("%s - %s (%s)\n",err_classes[i].class, err[j].name,err[j].message)); return; } } ReportError ("Unknown error - (%ld, %ld).", class, num); LOG (("Unknown error - (%ld, %ld)\n", class, num)); } 
