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The new msdfs implementation that uses symlinks to point to other

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servers. Very intuitive.

Removed the dfs map parsing code and tdb maintenance code (files
msdfs/parse_dfs_map.c & msdfs/msdfs_tdb.c), dfs map loading and unloading
calls (param/loadparm.c smbd/server.c).

Added code to display msdfs format symlinks as directories in a
transact2_findfirst/findnext. (smbd/trans2.c)

Modified msdfs/msdfs.c to use the msdfs symlinks to
create dfs referrals.

Changed msdfs/README to reflect new operability.
(This used to be commit 6803d2574fab9e5931786d5c9aa5dc5867bb5f05)
This commit is contained in:
Shirish Kalele 2000-05-16 01:13:16 +00:00
parent 210f11d0e3
commit 651946153e
12 changed files with 382 additions and 815 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
source3/Makefile.in
View File

@ -174,7 +174,7 @@ PRINTING_OBJ = printing/pcap.o printing/print_svid.o printing/print_cups.o print
PRINTBACKEND_OBJ = printing/printing.o printing/lpq_parse.o printing/nt_printing.o
MSDFS_OBJ = msdfs/msdfs.o msdfs/msdfs_tdb.o msdfs/parse_dfs_map.o
MSDFS_OBJ = msdfs/msdfs.o
SMBD_OBJ = $(SMBD_OBJ1) $(MSDFS_OBJ) $(PARAM_OBJ) $(LIBSMB_OBJ) $(UBIQX_OBJ) \
$(RPC_SERVER_OBJ) $(RPC_CLIENT_OBJ) $(RPC_PARSE_OBJ) \

16
source3/include/msdfs.h
View File

@ -28,6 +28,13 @@
#define DFSREF_REFERRAL_SERVER 0x1
#define DFSREF_STORAGE_SERVER 0x2
/* Referral sizes */
#define VERSION2_REFERRAL_SIZE 0x16
#define VERSION3_REFERRAL_SIZE 0x22
#define REFERRAL_HEADER_SIZE 0x08
/* Maximum number of referrals for each Dfs volume */
#define MAX_REFERRAL_COUNT 256
struct referral
{
@ -66,14 +73,9 @@ struct dfs_path
return(dfs_path_error(inbuf,outbuf)); }
#define init_dfsroot(conn, inbuf, outbuf) \
{ if(*lp_dfsmap(SNUM(conn)) && lp_host_msdfs()) { \
{ if(lp_msdfs_root(SNUM(conn)) && lp_host_msdfs()) \
SSVAL(outbuf, smb_vwv2, SMB_SHARE_IN_DFS | SMB_SUPPORT_SEARCH_BITS); \
if(lp_dfsmap_loaded(SNUM(conn))) \
msdfs_open(False); \
else { \
DEBUG(3,("msdfs map database not initialized!\n")); \
pstrcpy(lp_dfsmap(SNUM(conn)),""); \
} } }
}
#else
/* Stub macros */

22
source3/include/proto.h
View File

@ -873,6 +873,7 @@ BOOL posix_locking_end(void);
/*The following definitions come from msdfs/msdfs.c */
BOOL is_msdfs_volume(connection_struct* conn, char* path);
BOOL dfs_redirect(char* pathname, connection_struct* conn);
BOOL dfs_findfirst_redirect(char* pathname, connection_struct* conn);
int setup_dfs_referral(char* pathname, int max_referral_level,
@ -880,20 +881,8 @@ int setup_dfs_referral(char* pathname, int max_referral_level,
int dfs_path_error(char* inbuf, char* outbuf);
int setup_dfs_referral(char* pathname, int max_referral_level,
char** ppdata);
/*The following definitions come from msdfs/msdfs_tdb.c */
BOOL msdfs_open(BOOL update);
BOOL add_junction_entry(struct junction_map* junction);
BOOL get_junction_entry(struct junction_map* junction);
BOOL isDfsShare(char* svc,char* vol);
void msdfs_close(void);
void msdfs_end(void);
/*The following definitions come from msdfs/parse_dfs_map.c */
void load_dfsmaps(void);
void load_dfsmaps(void);
BOOL is_msdfs_volume(connection_struct* conn, char* path);
void unistr_to_dos(char* dst,char* src) ;
/*The following definitions come from nmbd/asyncdns.c */
@ -1408,8 +1397,8 @@ char *lp_veto_files(int );
char *lp_hide_files(int );
char *lp_veto_oplocks(int );
char *lp_driverlocation(int );
char *lp_dfsmap(int );
BOOL lp_dfsmap_loaded(int );
BOOL lp_msdfs_root(int );
BOOL lp_autoloaded(int );
BOOL lp_preexec_close(int );
BOOL lp_rootpreexec_close(int );
@ -1471,7 +1460,6 @@ BOOL lp_add_home(char *pszHomename, int iDefaultService, char *pszHomedir);
int lp_add_service(char *pszService, int iDefaultService);
BOOL lp_add_printer(char *pszPrintername, int iDefaultService);
BOOL lp_file_list_changed(void);
void set_dfsmap_loaded(int i,BOOL b);
void *lp_local_ptr(int snum, void *ptr);
BOOL lp_do_parameter(int snum, char *pszParmName, char *pszParmValue);
BOOL lp_is_default(int snum, struct parm_struct *parm);

31
source3/msdfs/README
View File

@ -5,23 +5,28 @@ Currently, MS Dfs support is a configure time parameter (--with-msdfs). Can be c
To have a server announce itself as a Dfs server, add a "host msdfs=yes" entry to smb.conf.
To make a share a Dfs root, add a "dfs map" entry to the share definition in the smb.conf file.
To make a share a Dfs root, add a "msdfs root=yes" entry to the share definition
in the smb.conf file.
e.g.
[pub]
dfs map = /usr/local/samba/lib/pub_dfs_map
path = /export/publicsmb
msdfs root = yes
The pub_dfs_map file would contain a list of junction points and their referral paths.
To create dfs volumes/junctions in the share, create symbolic links of the
format msdfs:server1\share1,server2\share2 and so on.
In our example, if you have a directory pub_dir1/ in the pub share and want to make it a dfs junction point to \\machineX\pub, you can have an entry in the pub_dfs_map file as:
In the above example, create a dfs volume "dfsstorage" in the [pub] share as:
cd /export/publicsmb
ln -s msdfs:serverA\\share dfsstorage
pub_dir1
\\machineX\pub:0:600
Clicking on dfsstorage from a dfs-aware client will show you the contents of
\\serverA\share
where: 0 is the proximity of the server. If you have multiple referred servers for one junction point, you can set up preferences among these using this field.
& 600 is the number of seconds the client must cache the referral. After this time period, the smb client supposedly should contact the server again for a fresh referral.
Shares with "msdfs root = no" (which is the default) entries are served as normal
shares and the client stops talking Dfs with Samba after a tconX.
NOTE: You can have multiple referral paths for one junction point. Currently, the parser code depends on the leading \ to determine if the line is a referral or a new junction point.
Shares with no "dfs map" entries are served as normal shares and the client stops talking Dfs with Samba after a tconX.
TODO: Dynamically showing junction points to dfs clients alone,probably in the findfirst reply. Currently, you need to have directories on the samba server as token junction points.
NOTES:
* Windows clients need to be rebooted if a non-dfs root is made a dfs root or
vice versa. A better option is to introduce a new share and make it the dfs root.
* Currently there's a restriction that msdfs symlink names should be all
lowercase.

516
source3/msdfs/msdfs.c
View File

@ -27,10 +27,6 @@ extern uint32 global_client_caps;
#ifdef MS_DFS
#define VERSION2_REFERRAL_SIZE 0x16
#define VERSION3_REFERRAL_SIZE 0x22
#define REFERRAL_HEADER_SIZE 0x08
static void create_nondfs_path(char* pathname, struct dfs_path* pdp)
{
pstrcpy(pathname,pdp->volumename);
@ -50,15 +46,6 @@ static BOOL parse_dfs_path(char* pathname, struct dfs_path* pdp)
ZERO_STRUCTP(pdp);
/* strip off all \'s from the beginning */
/* while(*temp=='\\') temp++;
DEBUG(10,("temp in parse_dfs_path : .%s.\n",temp));
remove any trailing \'s
if(temp[strlen(temp)-1] == '\\') temp[strlen(temp)-1]='\0';
*/
trim_string(temp,"\\","\\");
DEBUG(10,("temp in parse_dfs_path: .%s. after trimming \\'s\n",temp));
@ -101,6 +88,120 @@ static BOOL parse_dfs_path(char* pathname, struct dfs_path* pdp)
return True;
}
/**********************************************************************
Parse the contents of a symlink to verify if it is an msdfs referral
A valid referral is of the form: msdfs:server1\share1,server2\share2
**********************************************************************/
static BOOL parse_symlink(char* buf,struct referral** preflist, int* refcount)
{
pstring temp;
char* prot;
char* alt_path[MAX_REFERRAL_COUNT];
int count=0, i;
struct referral* reflist;
pstrcpy(temp,buf);
prot = strtok(temp,":");
if(!strequal(prot, "msdfs"))
return False;
/* It's an msdfs referral */
if(!preflist)
return True;
/* parse out the alternate paths */
while(((alt_path[count] = strtok(NULL,",")) != NULL)
&& count<MAX_REFERRAL_COUNT)
count++;
DEBUG(10,("parse_symlink: count=%d\n", count));
reflist = *preflist = (struct referral*) malloc(count *
sizeof(struct referral));
if(reflist == NULL)
{
DEBUG(0,("parse_symlink: Malloc failed!\n"));
return False;
}
for(i=0;i<count;i++)
{
pstrcpy(reflist[i].alternate_path, "\\");
pstrcat(reflist[i].alternate_path, alt_path[i]);
reflist[i].proximity = 0;
reflist[i].ttl = REFERRAL_TTL;
DEBUG(10, ("parse_symlink: Created alt path: %s\n",
reflist[i].alternate_path));
}
if(refcount)
*refcount = count;
return True;
}
BOOL is_msdfs_volume(connection_struct* conn, char* path)
{
SMB_STRUCT_STAT st;
pstring referral;
if(!path || !conn)
return False;
strlower(path);
if(conn->vfs_ops.lstat(dos_to_unix(path,False),&st) != 0)
{
DEBUG(5,("is_msdfs_volume: %s does not exist.\n",path));
return False;
}
if(st.st_mode & S_IFLNK)
{
/* open the link and read it */
readlink(path, referral, sizeof(pstring));
DEBUG(5,("is_msdfs_volume: %s -> %s\n",path,referral));
if(parse_symlink(referral, NULL, NULL))
return True;
}
return False;
}
static BOOL get_referred_path(struct junction_map* junction)
{
fstring path;
pstring buf;
SMB_STRUCT_STAT st;
int snum = lp_servicenumber(junction->service_name);
/* form the path */
fstrcpy(path, lp_pathname(snum));
fstrcat(path, "/");
strlower(junction->volume_name);
fstrcat(path, junction->volume_name);
DEBUG(5,("get_referred_path: lstat target: %s\n", path));
if(lstat(dos_to_unix(path, False),&st) != 0)
{
DEBUG(5,("get_referred_path: %s does not exist.\n",path));
return False;
}
if(st.st_mode & S_IFLNK)
{
/* open the link and read it to get the dfs referral */
readlink(path, buf, sizeof(buf));
DEBUG(5,("get_referred_path: Referral: %s\n",buf));
if(parse_symlink(buf, &junction->referral_list,
&junction->referral_count))
return True;
}
return False;
}
/**************************************************************
Decides if given pathname is Dfs and if it should be redirected
@ -110,10 +211,11 @@ BOOL dfs_redirect(char* pathname, connection_struct* conn)
{
struct dfs_path dp;
pstring temp;
fstring path;
pstrcpy(temp,pathname);
if(lp_dfsmap(SNUM(conn))==NULL || *lp_dfsmap(SNUM(conn))=='\0')
if(!lp_msdfs_root(SNUM(conn)) )
return False;
parse_dfs_path(pathname,&dp);
@ -122,7 +224,10 @@ BOOL dfs_redirect(char* pathname, connection_struct* conn)
return False;
/* check if need to redirect */
if(isDfsShare(dp.servicename,dp.volumename))
fstrcpy(path, conn->connectpath);
fstrcat(path, "/");
fstrcat(path, dp.volumename);
if(is_msdfs_volume(conn, path))
{
DEBUG(4,("dfs_redirect: Redirecting %s\n",temp));
return True;
@ -167,6 +272,185 @@ BOOL dfs_findfirst_redirect(char* pathname, connection_struct* conn)
}
}
static int setup_ver2_dfs_referral(char* pathname, char** ppdata,
struct junction_map* junction,
BOOL self_referral)
{
char* pdata = *ppdata;
unsigned char uni_requestedpath[1024];
int uni_reqpathoffset1,uni_reqpathoffset2;
int uni_curroffset;
int requestedpathlen=0;
int offset;
int reply_size = 0;
int i=0;
DEBUG(10,("setting up version2 referral\nRequested path:\n"));
requestedpathlen = (dos_struni2(uni_requestedpath,pathname,512)+1)*2;
dump_data(10,uni_requestedpath,requestedpathlen);
DEBUG(10,("ref count = %u\n",junction->referral_count));
uni_reqpathoffset1 = REFERRAL_HEADER_SIZE +
VERSION2_REFERRAL_SIZE * junction->referral_count;
uni_reqpathoffset2 = uni_reqpathoffset1 + requestedpathlen;
uni_curroffset = uni_reqpathoffset2 + requestedpathlen;
reply_size = REFERRAL_HEADER_SIZE + VERSION2_REFERRAL_SIZE*junction->referral_count +
2 * requestedpathlen;
DEBUG(10,("reply_size: %u\n",reply_size));
/* add up the unicode lengths of all the referral paths */
for(i=0;i<junction->referral_count;i++)
{
DEBUG(10,("referral %u : %s\n",i,junction->referral_list[i].alternate_path));
reply_size += (strlen(junction->referral_list[i].alternate_path)+1)*2;
}
DEBUG(10,("reply_size = %u\n",reply_size));
/* add the unexplained 0x16 bytes */
reply_size += 0x16;
pdata = *ppdata = Realloc(pdata,reply_size);
if(pdata == NULL)
{
DEBUG(0,("malloc failed for Realloc!\n"));
return -1;
}
/* copy in the dfs requested paths.. required for offset calculations */
memcpy(pdata+uni_reqpathoffset1,uni_requestedpath,requestedpathlen);
memcpy(pdata+uni_reqpathoffset2,uni_requestedpath,requestedpathlen);
/* create the header */
SSVAL(pdata,0,requestedpathlen-2); /* path consumed */
SSVAL(pdata,2,junction->referral_count); /* number of referral in this pkt */
if(self_referral)
SIVAL(pdata,4,DFSREF_REFERRAL_SERVER | DFSREF_STORAGE_SERVER);
else
SIVAL(pdata,4,DFSREF_STORAGE_SERVER);
offset = 8;
/* add the referral elements */
for(i=0;i<junction->referral_count;i++)
{
struct referral* ref = &(junction->referral_list[i]);
int unilen;
SSVAL(pdata,offset,2); /* version 2 */
SSVAL(pdata,offset+2,VERSION2_REFERRAL_SIZE);
if(self_referral)
SSVAL(pdata,offset+4,1);
else
SSVAL(pdata,offset+4,0);
SSVAL(pdata,offset+6,0); /* ref_flags :use path_consumed bytes? */
SIVAL(pdata,offset+8,ref->proximity);
SIVAL(pdata,offset+12,ref->ttl);
SSVAL(pdata,offset+16,uni_reqpathoffset1-offset);
SSVAL(pdata,offset+18,uni_reqpathoffset2-offset);
/* copy referred path into current offset */
unilen = (dos_struni2(pdata+uni_curroffset,ref->alternate_path,512)
+1)*2;
SSVAL(pdata,offset+20,uni_curroffset-offset);
uni_curroffset += unilen;
offset += VERSION2_REFERRAL_SIZE;
}
/* add in the unexplained 22 (0x16) bytes at the end */
memset(pdata+uni_curroffset,'\0',0x16);
free(junction->referral_list);
return reply_size;
}
static int setup_ver3_dfs_referral(char* pathname, char** ppdata,
struct junction_map* junction,
BOOL self_referral)
{
char* pdata = *ppdata;
unsigned char uni_reqpath[1024];
int uni_reqpathoffset1, uni_reqpathoffset2;
int uni_curroffset;
int reply_size = 0;
int reqpathlen = 0;
int offset,i=0;
DEBUG(10,("setting up version3 referral\n"));
reqpathlen = (dos_struni2(uni_reqpath,pathname,512)+1)*2;
dump_data(10,uni_reqpath,reqpathlen);
uni_reqpathoffset1 = REFERRAL_HEADER_SIZE + VERSION3_REFERRAL_SIZE *
junction->referral_count;
uni_reqpathoffset2 = uni_reqpathoffset1 + reqpathlen;
reply_size = uni_curroffset = uni_reqpathoffset2 + reqpathlen;
for(i=0;i<junction->referral_count;i++)
{
DEBUG(10,("referral %u : %s\n",i,junction->referral_list[i].alternate_path));
reply_size += (strlen(junction->referral_list[i].alternate_path)+1)*2;
}
pdata = *ppdata = Realloc(pdata,reply_size);
if(pdata == NULL)
{
DEBUG(0,("version3 referral setup: malloc failed for Realloc!\n"));
return -1;
}
/* create the header */
SSVAL(pdata,0,reqpathlen-2); /* path consumed */
SSVAL(pdata,2,junction->referral_count); /* number of referral in this pkt */
if(self_referral)
SIVAL(pdata,4,DFSREF_REFERRAL_SERVER | DFSREF_STORAGE_SERVER);
else
SIVAL(pdata,4,DFSREF_STORAGE_SERVER);
/* copy in the reqpaths */
memcpy(pdata+uni_reqpathoffset1,uni_reqpath,reqpathlen);
memcpy(pdata+uni_reqpathoffset2,uni_reqpath,reqpathlen);
offset = 8;
for(i=0;i<junction->referral_count;i++)
{
struct referral* ref = &(junction->referral_list[i]);
int unilen;
SSVAL(pdata,offset,3); /* version 3 */
SSVAL(pdata,offset+2,VERSION3_REFERRAL_SIZE);
if(self_referral)
SSVAL(pdata,offset+4,1);
else
SSVAL(pdata,offset+4,0);
SSVAL(pdata,offset+6,0); /* ref_flags :use path_consumed bytes? */
SIVAL(pdata,offset+8,ref->ttl);
SSVAL(pdata,offset+12,uni_reqpathoffset1-offset);
SSVAL(pdata,offset+14,uni_reqpathoffset2-offset);
/* copy referred path into current offset */
unilen = (dos_struni2(pdata+uni_curroffset,ref->alternate_path,512)
+1)*2;
SSVAL(pdata,offset+16,uni_curroffset-offset);
/* copy 0x10 bytes of 00's in the ServiceSite GUID */
memset(pdata+offset+18,'\0',16);
uni_curroffset += unilen;
offset += VERSION3_REFERRAL_SIZE;
}
free(junction->referral_list);
return reply_size;
}
/******************************************************************
* Set up the Dfs referral for the dfs pathname
******************************************************************/
@ -179,7 +463,6 @@ int setup_dfs_referral(char* pathname, int max_referral_level,
BOOL self_referral;
char* pdata = *ppdata;
int reply_size = 0;
ZERO_STRUCT(junction);
@ -189,24 +472,24 @@ int setup_dfs_referral(char* pathname, int max_referral_level,
/* check if path is dfs : check hostname is the first token */
if(global_myname && (strcasecmp(global_myname,dp.hostname)!=0))
{
DEBUG(4,("Invalid DFS referral request for %s\n",pathname));
DEBUG(4,("setup_dfs_referral: Invalid DFS referral request for %s\n",
pathname));
return -1;
}
/* Check for a non-DFS share */
{
char* map = lp_dfsmap(lp_servicenumber(dp.servicename));
DEBUG(10,("lp_dfsmap in setup dfs referral: .%s.\n",map ));
if(map == NULL || (*map == '\0'))
return -1;
}
if(!lp_msdfs_root(lp_servicenumber(dp.servicename)))
{
DEBUG(4,("setup_dfs_referral: %s is not an msdfs root.\n",
dp.servicename));
return -1;
}
pstrcpy(junction.service_name,dp.servicename);
pstrcpy(junction.volume_name,dp.volumename);
/* get the junction entry */
if(!get_junction_entry(&junction))
if(!get_referred_path(&junction))
{
/* refer the same pathname, create a standard referral struct */
@ -230,7 +513,7 @@ int setup_dfs_referral(char* pathname, int max_referral_level,
if( DEBUGLVL( 3 ) )
{
int i=0;
dbgtext("setup_dfs_referral: Referring client request for %s to alternate path(s):",pathname);
dbgtext("setup_dfs_referral: Path %s to alternate path(s):",pathname);
for(i=0;i<junction.referral_count;i++)
dbgtext(" %s",junction.referral_list[i].alternate_path);
dbgtext(".\n");
@ -238,185 +521,37 @@ int setup_dfs_referral(char* pathname, int max_referral_level,
}
/* create the referral depeding on version */
DEBUG(10,("MAX_REFERRAL_LEVEL :%d\n",max_referral_level));
DEBUG(10,("max_referral_level :%d\n",max_referral_level));
if(max_referral_level<2 || max_referral_level>3) max_referral_level = 2;
switch(max_referral_level)
{
case 2:
{
unsigned char uni_requestedpath[1024];
int uni_reqpathoffset1,uni_reqpathoffset2;
int uni_curroffset;
int requestedpathlen=0;
int offset;
int i=0;
DEBUG(10,("setting up version2 referral\nRequested path:\n"));
requestedpathlen = (dos_struni2(uni_requestedpath,pathname,512)+1)*2;
dump_data(10,uni_requestedpath,requestedpathlen);
DEBUG(10,("ref count = %u\n",junction.referral_count));
uni_reqpathoffset1 = REFERRAL_HEADER_SIZE +
VERSION2_REFERRAL_SIZE * junction.referral_count;
uni_reqpathoffset2 = uni_reqpathoffset1 + requestedpathlen;
uni_curroffset = uni_reqpathoffset2 + requestedpathlen;
reply_size = REFERRAL_HEADER_SIZE + VERSION2_REFERRAL_SIZE*junction.referral_count +
2 * requestedpathlen;
DEBUG(10,("reply_size: %u\n",reply_size));
/* add up the unicode lengths of all the referral paths */
for(i=0;i<junction.referral_count;i++)
{
DEBUG(10,("referral %u : %s\n",i,junction.referral_list[i].alternate_path));
reply_size += (strlen(junction.referral_list[i].alternate_path)+1)*2;
}
DEBUG(10,("reply_size = %u\n",reply_size));
/* add the unexplained 0x16 bytes */
reply_size += 0x16;
pdata = *ppdata = Realloc(pdata,reply_size);
if(pdata == NULL)
{
DEBUG(0,("malloc failed for Realloc!\n"));
return -1;
}
/* copy in the dfs requested paths.. required for offset calculations */
memcpy(pdata+uni_reqpathoffset1,uni_requestedpath,requestedpathlen);
memcpy(pdata+uni_reqpathoffset2,uni_requestedpath,requestedpathlen);
/* create the header */
SSVAL(pdata,0,requestedpathlen-2); /* path consumed */
SSVAL(pdata,2,junction.referral_count); /* number of referral in this pkt */
if(self_referral)
SIVAL(pdata,4,DFSREF_REFERRAL_SERVER | DFSREF_STORAGE_SERVER);
else
SIVAL(pdata,4,DFSREF_STORAGE_SERVER);
offset = 8;
/* add the referral elements */
for(i=0;i<junction.referral_count;i++)
{
struct referral* ref = &(junction.referral_list[i]);
int unilen;
SSVAL(pdata,offset,2); /* version 2 */
SSVAL(pdata,offset+2,VERSION2_REFERRAL_SIZE);
if(self_referral)
SSVAL(pdata,offset+4,1);
else
SSVAL(pdata,offset+4,0);
SSVAL(pdata,offset+6,0); /* ref_flags :use path_consumed bytes? */
SIVAL(pdata,offset+8,ref->proximity);
SIVAL(pdata,offset+12,ref->ttl);
SSVAL(pdata,offset+16,uni_reqpathoffset1-offset);
SSVAL(pdata,offset+18,uni_reqpathoffset2-offset);
/* copy referred path into current offset */
unilen = (dos_struni2(pdata+uni_curroffset,ref->alternate_path,512)
+1)*2;
SSVAL(pdata,offset+20,uni_curroffset-offset);
uni_curroffset += unilen;
offset += VERSION2_REFERRAL_SIZE;
}
/* add in the unexplained 22 (0x16) bytes at the end */
memset(pdata+uni_curroffset,'\0',0x16);
free(junction.referral_list);
reply_size = setup_ver2_dfs_referral(pathname, ppdata, &junction,
self_referral);
break;
}
case 3:
{
unsigned char uni_reqpath[1024];
int uni_reqpathoffset1, uni_reqpathoffset2;
int uni_curroffset;
int reqpathlen = 0;
int offset,i=0;
DEBUG(10,("setting up version3 referral\n"));
reqpathlen = (dos_struni2(uni_reqpath,pathname,512)+1)*2;
dump_data(10,uni_reqpath,reqpathlen);
uni_reqpathoffset1 = REFERRAL_HEADER_SIZE + VERSION3_REFERRAL_SIZE *
junction.referral_count;
uni_reqpathoffset2 = uni_reqpathoffset1 + reqpathlen;
reply_size = uni_curroffset = uni_reqpathoffset2 + reqpathlen;
for(i=0;i<junction.referral_count;i++)
{
DEBUG(10,("referral %u : %s\n",i,junction.referral_list[i].alternate_path));
reply_size += (strlen(junction.referral_list[i].alternate_path)+1)*2;
}
pdata = *ppdata = Realloc(pdata,reply_size);
if(pdata == NULL)
{
DEBUG(0,("version3 referral setup: malloc failed for Realloc!\n"));
return -1;
}
/* create the header */
SSVAL(pdata,0,reqpathlen-2); /* path consumed */
SSVAL(pdata,2,junction.referral_count); /* number of referral in this pkt */
if(self_referral)
SIVAL(pdata,4,DFSREF_REFERRAL_SERVER | DFSREF_STORAGE_SERVER);
else
SIVAL(pdata,4,DFSREF_STORAGE_SERVER);
/* copy in the reqpaths */
memcpy(pdata+uni_reqpathoffset1,uni_reqpath,reqpathlen);
memcpy(pdata+uni_reqpathoffset2,uni_reqpath,reqpathlen);
offset = 8;
for(i=0;i<junction.referral_count;i++)
{
struct referral* ref = &(junction.referral_list[i]);
int unilen;
SSVAL(pdata,offset,3); /* version 3 */
SSVAL(pdata,offset+2,VERSION3_REFERRAL_SIZE);
if(self_referral)
SSVAL(pdata,offset+4,1);
else
SSVAL(pdata,offset+4,0);
SSVAL(pdata,offset+6,0); /* ref_flags :use path_consumed bytes? */
SIVAL(pdata,offset+8,ref->ttl);
SSVAL(pdata,offset+12,uni_reqpathoffset1-offset);
SSVAL(pdata,offset+14,uni_reqpathoffset2-offset);
/* copy referred path into current offset */
unilen = (dos_struni2(pdata+uni_curroffset,ref->alternate_path,512)
+1)*2;
SSVAL(pdata,offset+16,uni_curroffset-offset);
/* copy 0x10 bytes of 00's in the ServiceSite GUID */
memset(pdata+offset+18,'\0',16);
uni_curroffset += unilen;
offset += VERSION3_REFERRAL_SIZE;
}
free(junction.referral_list);
reply_size = setup_ver3_dfs_referral(pathname, ppdata, &junction,
self_referral);
break;
}
default:
{
DEBUG(0,("setup_dfs_referral: Invalid dfs referral version: %d\n",
max_referral_level));
return -1;
}
}
DEBUG(10,("DFS Referral pdata:\n"));
dump_data(10,pdata,reply_size);
dump_data(10,*ppdata,reply_size);
return reply_size;
}
int dfs_path_error(char* inbuf, char* outbuf)
{
enum remote_arch_types ra_type = get_remote_arch();
@ -437,4 +572,9 @@ int setup_dfs_referral(char* pathname, int max_referral_level,
return -1;
}
BOOL is_msdfs_volume(connection_struct* conn, char* path)
{
return False;
}
#endif

268
source3/msdfs/msdfs_tdb.c
View File

@ -1,268 +0,0 @@
/*
Unix SMB/Netbios implementation.
Version 3.0
MSDfs services for Samba
Copyright (C) Shirish Kalele 2000
Copyright (C) Samba Team 2000
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include "includes.h"
extern int DEBUGLEVEL;
#ifdef MS_DFS
#define MSDFS_TDB "msdfs.tdb"
/* structures for msdfs.tdb */
struct tdb_junction_key
{
pstring service_name;
pstring volume_name;
};
struct tdb_junction_data
{
int referral_count;
struct referral first_referral;
};
static TDB_CONTEXT* msdfs_map = NULL;
/*
* Open the msdfs tdb map. Called once for update when parsing the dfsmap file
* and then subsequently at tconX for reading
*/
BOOL msdfs_open(BOOL update)
{
pstring fname;
int oflags = (update)?O_RDWR|O_CREAT:O_RDONLY;
/* close any open TDB contexts before opening */
if(msdfs_map != NULL)
{
DEBUG(10,("msdfs_open: Closing existing TDB_CONTEXT msdfs_map: name: %s, fd: %d\n",
msdfs_map->name,msdfs_map->fd));
tdb_close(msdfs_map);
}
pstrcpy(fname,lock_path(MSDFS_TDB));
DEBUG(10,("opening msdfs tdb : .%s.\n",fname));
if((msdfs_map = tdb_open(fname,0,0,oflags,0644)) == NULL)
{
DEBUG(1,("Couldn't open Dfs tdb map %s %s.\nError was %s\n",fname,
(update?"for update":"for reading"),strerror(errno) ));
return False;
}
DEBUG(10,("TDB_CONTEXT msdfs_map opened: name: %s, fd: %d\n",msdfs_map->name,msdfs_map->fd));
return True;
}
BOOL add_junction_entry(struct junction_map* junction)
{
struct tdb_junction_key* tlk;
struct tdb_junction_data* tld;
TDB_DATA key,data;
uint16 data_size;
int i=0;
if(msdfs_map == NULL)
{
DEBUG(4,("Attempt to add junction entry to unopened %s\n",MSDFS_TDB));
return False;
}
/* create the key */
if((tlk = (struct tdb_junction_key*) malloc(sizeof(struct tdb_junction_key))) == NULL)
{
DEBUG(0,("malloc failed for tdb junction key\n"));
return False;
}
ZERO_STRUCTP(tlk);
pstrcpy(tlk->service_name,junction->service_name);
pstrcpy(tlk->volume_name,junction->volume_name);
strupper(tlk->service_name);
strupper(tlk->volume_name);
key.dptr = (char*) tlk;
key.dsize = sizeof(struct tdb_junction_key);
/* create the data */
data_size = sizeof(struct tdb_junction_data) +
((junction->referral_count-1)*sizeof(struct referral));
if( (tld = (struct tdb_junction_data*) malloc(data_size)) == NULL)
{
DEBUG(0,("malloc failed for tdb junction data\n"));
return False;
}
tld->referral_count = junction->referral_count;
memcpy(&tld->first_referral,junction->referral_list,junction->referral_count * sizeof(struct referral));
data.dptr = (char*) tld;
data.dsize = data_size;
DEBUG(10,("Storing key: .%s:%s.\n",tlk->service_name,tlk->volume_name));
DEBUG(10,("Data: referral_count : %u\n",tld->referral_count));
for(i=0;i<tld->referral_count;i++)
{
struct referral* ref = &(junction->referral_list[i]);
DEBUG(10,("Path %d: %s, proximity: %u, ttl: %u\n",i+1,
ref->alternate_path,ref->proximity,ref->ttl));
}
if( tdb_store(msdfs_map,key,data,TDB_REPLACE) != 0)
{
DEBUG(10,("Could not store referral for %s:%s \n",
junction->service_name, junction->volume_name));
free(key.dptr);
free(data.dptr);
return False;
}
free(key.dptr);
free(data.dptr);
return True;
}
BOOL get_junction_entry(struct junction_map* junction)
{
struct tdb_junction_key* tlk;
struct tdb_junction_data* tld;
uint16 reflistsize=0;
TDB_DATA key,data;
if(msdfs_map == NULL)
{
DEBUG(4,("Attempt to get junction entry from unopened %s\n",MSDFS_TDB));
return False;
}
if( (tlk=(struct tdb_junction_key*) malloc(sizeof(struct tdb_junction_key))) == NULL)
{
DEBUG(0,("couldn't malloc for tdb junction key\n"));
return False;
}
ZERO_STRUCTP(tlk);
pstrcpy(tlk->service_name,junction->service_name);
pstrcpy(tlk->volume_name,junction->volume_name);
strupper(tlk->service_name);
strupper(tlk->volume_name);
key.dptr = (char*) tlk;
key.dsize = sizeof(struct tdb_junction_key);
data = tdb_fetch(msdfs_map,key);
if(data.dptr == NULL)
{
DEBUG(8,("No data found for key %s:%s\n",junction->service_name,junction->volume_name));
DEBUG(8,("Error was %s\n",strerror(errno)));
free(key.dptr);
return False;
}
tld = (struct tdb_junction_data*) data.dptr;
junction->referral_count = tld->referral_count;
reflistsize = junction->referral_count * sizeof(struct referral);
if((junction->referral_list = (struct referral*) malloc(reflistsize) ) == NULL)
{
DEBUG(0,("malloc failed for referral list\n"));
free(key.dptr);
free(data.dptr);
return False;
}
memcpy(junction->referral_list,&(tld->first_referral),reflistsize);
free(key.dptr);
free(data.dptr);
return True;
}
BOOL isDfsShare(char* svc,char* vol)
{
TDB_DATA key;
struct tdb_junction_key tlk;
ZERO_STRUCT(tlk);
if(msdfs_map == NULL)
{
DEBUG(4,("Attempt to check junction existence in unopened %s\n",MSDFS_TDB));
return False;
}
pstrcpy(tlk.service_name,svc);
pstrcpy(tlk.volume_name,vol);
strupper(tlk.service_name);
strupper(tlk.volume_name);
key.dptr = (char*) &tlk;
key.dsize = sizeof(struct tdb_junction_key);
DEBUG(10,("tdb_exists for key %s:%s returns %d\n",tlk.service_name,tlk.volume_name,
tdb_exists(msdfs_map,key)));
if(tdb_exists(msdfs_map,key))
return True;
else
{
DEBUG(10,("error was %s\n",strerror(errno)));
return False;
}
}
void msdfs_close(void)
{
if(msdfs_map != NULL)
tdb_close(msdfs_map);
msdfs_map = NULL;
}
void msdfs_end(void)
{
/* pstring fname; */
msdfs_close();
/* pstrcpy(fname,lock_path(MSDFS_TDB));
unlink(fname); */
}
#endif

280
source3/msdfs/parse_dfs_map.c
View File

@ -1,280 +0,0 @@
/*
Unix SMB/Netbios implementation.
Version 3.0
MSDfs services for Samba
Copyright (C) Shirish Kalele 2000
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
/***********************************************************************
* Parses the per-service Dfs map file which is of the form:
* junction_point1
* alternate_path1:proximity:ttl
* alternate_path2:proximity:ttl
* junction_point2
* ...
*
* Junction points are directories in the service (upon encountering which
* Samba redirects the client to the servers hosting the underlying share)
*
* Alternate paths are of the form: \\smbserver\share
* Currently, the parser detects alternate paths by the leading \'s
*
***********************************************************************/
#include "includes.h"
#ifdef MS_DFS
#define MAX_ALTERNATE_PATHS 256
extern int DEBUGLEVEL;
static char* Dfs_Crop_Whitespace(char* line)
{
int i=0;
int len = strlen(line);
if(line[0]=='#' || line[0]==';') return NULL;
for(i=0;i<len && isspace(line[i]);i++);
if(i>=len) return NULL;
line = &line[i];
/* crop off the newline at the end, if present */
/* if(line[len-1]=='\n') line[len-1]='\0'; */
/* remove white sace from the end */
for(i=strlen(line)-1;i>=0 && isspace(line[i]);i--);
if(i<0) return NULL;
line[i]='\0';
if(line[0] == '\0') return NULL;
return line;
}
static BOOL parse_referral(char* s, struct referral* ref)
{
#define MAXTOK_IN_REFERRAL 3
char *tok[MAXTOK_IN_REFERRAL+1];
int count=0;
int i=0;
if(s[1]=='\\') s = &s[1]; /* skip one backslash
if there are two */
tok[count++] = strtok(s,":");
while( ((tok[count]=strtok(NULL,":")) != NULL) && count<MAXTOK_IN_REFERRAL)
count++;
DEBUG(10,("parse_referral: Tokens"));
for(i=0;i<count;i++)
DEBUG(10,(" %s",tok[i]));
DEBUG(10,(".\n"));
if(count > 0)
pstrcpy(ref->alternate_path,tok[0]);
else
{
DEBUG(6,("Invalid referral line: %s\n",s));
return False;
}
if(count > 1)
ref->proximity = atoi(tok[1]);
else
ref->proximity = 0;
if(count > 2)
ref->ttl = atoi(tok[2]);
else
ref->ttl = REFERRAL_TTL;
return True;
}
static void create_mount_point(int snum, struct junction_map *jn)
{
fstring dfsvolumepath;
fstrcpy(dfsvolumepath, lp_pathname(snum));
fstrcat(dfsvolumepath, "/");
fstrcat(dfsvolumepath, jn->volume_name);
if(!directory_exist(dfsvolumepath, NULL))
{
DEBUG(10,("create_mount_point: creating msdfs mntpt %s\n",
dfsvolumepath));
become_root(False);
mkdir(dfsvolumepath, 0700);
unbecome_root(False);
}
}
static BOOL load_dfsmap(char* fname, int snum)
{
struct junction_map* junction = NULL;
struct referral tmp_ref_array[MAX_ALTERNATE_PATHS];
int ref_count = 0;
FILE* fp;
int line_cnt = 0;
if(lp_dfsmap_loaded(snum))
return True;
if((fp = sys_fopen(fname,"r")) == NULL)
{
DEBUG(1,("can't open dfs map file %s for service [%s]\nError was %s",fname,
lp_servicename(snum), strerror(errno)));
return False;
}
if(!msdfs_open(True))
return False;
while(!feof(fp))
{
pstring rawline;
char* line;
line_cnt++;
if(!fgets(rawline,PSTRING_LEN,fp))
continue;
if((line = Dfs_Crop_Whitespace(rawline)) == NULL)
continue;
DEBUG(6,("load_dfsmap: Cropped line: %s\n",line));
/* the line contains a new junction or
an alternate path to current junction */
if(line[0]!='\\')
{
/* a new junction definition encountered */
/* add the current junction if it has any referrals defined */
if(junction && ref_count!=0)
{
junction->referral_count = ref_count;
junction->referral_list = tmp_ref_array;
DEBUG(4,("Adding Dfs junction: %s\\%s Referrals: %u First referral path: %s\n",
junction->service_name,junction->volume_name,
junction->referral_count, junction->referral_list[0].alternate_path));
if(!add_junction_entry(junction))
{
DEBUG(6,("Unable to add junction entry %s:%s after parsing\n",
junction->service_name,junction->volume_name));
}
/* create a unix directory as a junction/mount point. */
create_mount_point(snum, junction);
free(junction);
}
/* then, create a new junction_map node */
if((junction = (struct junction_map*) malloc(sizeof(struct junction_map))) == NULL)
{
DEBUG(0,("Couldn't malloc for Dfs junction_map node\n"));
return False;
}
pstrcpy(junction->service_name,lp_servicename(snum));
pstrcpy(junction->volume_name,line);
ref_count = 0;
}
else
{
/* referral encountered. add to current junction */
if(!junction)
{
DEBUG(4,("Invalid entry in Dfs map file.\nAlternate path defined outside of a junction in %s\nline %d: %s\n",fname, line_cnt, line));
return False;
}
/* parse the referral */
if(!parse_referral(line,&tmp_ref_array[ref_count]))
continue;
ref_count++;
}
}
/* End of file. Add the current junction and return */
if(junction)
{
junction->referral_count = ref_count;
junction->referral_list = tmp_ref_array;
DEBUG(4,("Adding Dfs junction: %s\\%s Referrals: %u First referral path: %s\n",
junction->service_name,junction->volume_name,
junction->referral_count, junction->referral_list[0].alternate_path));
if(!add_junction_entry(junction))
{
DEBUG(6,("Unable to add junction entry %s:%s after parsing\n",
junction->service_name,junction->volume_name));
}
create_mount_point(snum, junction);
free(junction);
}
fclose(fp);
msdfs_close();
return True;
}
void load_dfsmaps(void)
{
int i=0;
if(!lp_host_msdfs())
return;
for(i=0;*lp_servicename(i) && *lp_dfsmap(i)
&& !lp_dfsmap_loaded(i);i++)
{
char* dfsmapfile = lp_dfsmap(i);
DEBUG(4,("loading dfsmap for servicename: %s\n",lp_servicename(i)));
if(load_dfsmap(dfsmapfile,i))
{
set_dfsmap_loaded(i,True);
}
else
{
DEBUG(0,("handle_dfsmap: Unable to load Dfs map file %s.\nService %s not using MS Dfs\n",dfsmapfile,lp_servicename(i)));
set_dfsmap_loaded(i,False);
}
}
}
#else
/* Stub function if MS_DFS is not defined */
void load_dfsmaps(void)
{}
#endif

32
source3/param/loadparm.c
View File

@ -371,10 +371,8 @@ typedef struct
BOOL bFakeDirCreateTimes;
BOOL bBlockingLocks;
BOOL bInheritPerms;
#ifdef MS_DFS
char *szDfsMap;
BOOL bDfsMapLoaded;
#endif
BOOL bMSDfsRoot;
char dummy[3]; /* for alignment */
} service;
@ -485,10 +483,8 @@ static service sDefault =
False, /* bFakeDirCreateTimes */
True, /* bBlockingLocks */
False, /* bInheritPerms */
#ifdef MS_DFS
NULL, /* MS Dfs map path */
False, /* bDfsMapLoaded */
#endif
False, /* bMSDfsRoot */
"" /* dummy */
};
@ -893,10 +889,8 @@ static struct parm_struct parm_table[] =
{"vfs object", P_STRING, P_LOCAL, &sDefault.szVfsObjectFile, handle_vfs_object, NULL, 0},
{"vfs options", P_STRING, P_LOCAL, &sDefault.szVfsOptions, NULL, NULL, 0},
#ifdef MS_DFS
{"dfs map", P_STRING, P_LOCAL, &sDefault.szDfsMap, NULL, NULL, FLAG_SHARE},
{"msdfs root", P_BOOL, P_LOCAL, &sDefault.bMSDfsRoot, NULL, NULL, FLAG_SHARE},
{"host msdfs", P_BOOL, P_GLOBAL, &Globals.bHostMSDfs, NULL, NULL, FLAG_GLOBAL},
#endif
{"Winbind options", P_SEP, P_SEPARATOR},
@ -1422,11 +1416,7 @@ FN_LOCAL_STRING(lp_veto_files,szVetoFiles)
FN_LOCAL_STRING(lp_hide_files,szHideFiles)
FN_LOCAL_STRING(lp_veto_oplocks,szVetoOplockFiles)
FN_LOCAL_STRING(lp_driverlocation,szPrinterDriverLocation)
#ifdef MS_DFS
FN_LOCAL_STRING(lp_dfsmap,szDfsMap)
FN_LOCAL_BOOL(lp_dfsmap_loaded,bDfsMapLoaded)
#endif
FN_LOCAL_BOOL(lp_msdfs_root, bMSDfsRoot)
FN_LOCAL_BOOL(lp_autoloaded,autoloaded)
FN_LOCAL_BOOL(lp_preexec_close,bPreexecClose)
@ -2087,16 +2077,6 @@ static BOOL handle_source_env(char *pszParmValue,char **ptr)
return(result);
}
#ifdef MS_DFS
void set_dfsmap_loaded(int i,BOOL b)
{
pSERVICE(i)->bDfsMapLoaded = b;
}
#endif
/***************************************************************************
handle the interpretation of the vfs object parameter
*************************************************************************/

2
source3/rpc_server/srv_srvsvc.c
View File

@ -99,7 +99,7 @@ static void init_srv_share_info_1005(SRV_SHARE_INFO_1005* sh1005, int snum)
sh1005->dfs_root_flag = 0;
#ifdef MS_DFS
if(lp_host_msdfs() && *lp_dfsmap(snum) && lp_dfsmap_loaded(snum))
if(lp_host_msdfs() && lp_msdfs_root(snum))
sh1005->dfs_root_flag = 3;
#endif

2
source3/smbd/dosmode.c
View File

@ -138,7 +138,7 @@ int dos_mode(connection_struct *conn,char *path,SMB_STRUCT_STAT *sbuf)
if (S_ISDIR(sbuf->st_mode))
result = aDIR | (result & aRONLY);
#ifdef S_ISLNK
#if LINKS_READ_ONLY
if (S_ISLNK(sbuf->st_mode) && S_ISDIR(sbuf->st_mode))

11
source3/smbd/server.c
View File

@ -318,14 +318,6 @@ BOOL reload_services(BOOL test)
ret = lp_load(servicesf,False,False,True);
#ifdef MS_DFS
/* load the dfs maps of all the services having
a dfs_map parameter
we don't want to do this in lp_load because we want just the smbd
server to load up the dfs maps into msdfs.tdb. not nmbd, swat etc*/
load_dfsmaps();
#endif
load_printers();
/* perhaps the config filename is now set */
@ -455,9 +447,6 @@ void exit_server(char *reason)
}
locking_end();
#ifdef MS_DFS
msdfs_end();
#endif
DEBUG(3,("Server exit (%s)\n", (reason ? reason : "")));
exit(0);

15
source3/smbd/trans2.c
View File

@ -405,8 +405,19 @@ static BOOL get_lanman2_dir_entry(connection_struct *conn,
pstrcat(pathreal,dname);
if (conn->vfs_ops.stat(dos_to_unix(pathreal,False),&sbuf) != 0)
{
DEBUG(5,("get_lanman2_dir_entry:Couldn't stat [%s] (%s)\n",pathreal,strerror(errno)));
continue;
/* Needed to show the msdfs symlinks as directories */
if(!lp_host_msdfs() || !lp_msdfs_root(SNUM(conn))
|| !is_msdfs_volume(conn, pathreal))
{
DEBUG(5,("get_lanman2_dir_entry:Couldn't stat [%s] (%s)\n",
pathreal,strerror(errno)));
continue;
}
else
{
DEBUG(5,("get_lanman2_dir_entry: Masquerading msdfs link %s as a directory\n", pathreal));
sbuf.st_mode = (sbuf.st_mode & 0xFFF) | S_IFDIR;
}
}
mode = dos_mode(conn,pathreal,&sbuf);