DEVEL15-windows-cell-config-clones-20090626
[openafs.git] / src / WINNT / afsd / cm_config.c
index 37ed889..a09dabd 100644 (file)
  * directory or online at http://www.openafs.org/dl/license10.html
  */
 
-#include <afs/param.h>
-#include <afs/stds.h>
-
-#ifndef DJGPP
 #include <windows.h>
 #include <winsock2.h>
-#else
-#include <sys/socket.h>
-#include <netdb.h>
-#endif /* !DJGPP */
 #include <stdlib.h>
 #include <stdio.h>
 #include <string.h>
 
-#include "cm_config.h"
+#include "afsd.h"
+#include <WINNT\afssw.h>
+#include <WINNT\afsreg.h>
+
+#include <afs/param.h>
+#include <afs/stds.h>
+#include <afs/cellconfig.h>
+
 #ifdef AFS_AFSDB_ENV
 #include "cm_dns.h"
 #include <afs/afsint.h>
 #endif
 
-char AFSConfigKeyName[] =
-       "SYSTEM\\CurrentControlSet\\Services\\TransarcAFSDaemon\\Parameters";
-
-#define AFS_THISCELL "ThisCell"
-#define AFS_CELLSERVDB_UNIX "CellServDB"
-#define AFS_CELLSERVDB_NT "afsdcell.ini"
-#ifndef AFSDIR_CLIENT_ETC_DIRPATH
-#define AFSDIR_CLIENT_ETC_DIRPATH "c:/afs"
-#endif
-#if defined(DJGPP) || defined(AFS_WIN95_ENV)
-#define AFS_CELLSERVDB AFS_CELLSERVDB_UNIX
-#ifdef DJGPP
-extern char cm_confDir[];
-extern int errno;
-#endif /* DJGPP */
-#else
-#define AFS_CELLSERVDB AFS_CELLSERVDB_NT
-#endif /* DJGPP || WIN95 */
-
-
 static long cm_ParsePair(char *lineBufferp, char *leftp, char *rightp)
 {
-       char *tp;
+    char *tp;
     char tc;
     int sawEquals;
-       int sawBracket;
+    int sawBracket;
         
     sawEquals = 0;
-       sawBracket = 0;
+    sawBracket = 0;
     for(tp = lineBufferp; *tp; tp++) {
         tc = *tp;
 
-               if (sawBracket) {
-                       if (tc == ']')
-                               sawBracket = 0;
-                       continue;
-               }
+       if (sawBracket) {
+           if (tc == ']')
+               sawBracket = 0;
+           continue;
+       }
 
-               /* comment or line end */
+       /* comment or line end */
         if (tc == '#' || tc == '\r' || tc == '\n') 
             break;
 
-               /* square bracket comment -- look for closing delim */
-               if (tc == '[') {
+       /* square bracket comment -- look for closing delim */
+       if (tc == '[') {
             sawBracket = 1; 
             continue;
-        }
+        }      
 
-               /* space or tab */
+       /* space or tab */
         if (tc == ' ' || tc == '\t') 
             continue;
 
         if (tc == '=') {
             sawEquals = 1;
             continue;
-               }
-                
+       }
+
         /* now we have a real character, put it in the appropriate bucket */
         if (sawEquals == 0) {
-                       *leftp++ = tc;
-        }
-        else {
-                       *rightp++ = tc;
+           *leftp++ = tc;
+        }      
+        else { 
+           *rightp++ = tc;
         }
     }
 
-       /* null terminate the strings */
-       *leftp = 0;
+    /* null terminate the strings */
+    *leftp = 0;
     *rightp = 0;
 
     return 0;  /* and return success */
 }
 
+static int
+IsWindowsModule(const char * name)
+{
+    const char * p;
+    int i;
+
+    /* Do not perform searches for probable Windows modules */
+    for (p = name, i=0; *p; p++) {
+       if ( *p == '.' )
+           i++;
+    }
+    p = strrchr(name, '.');
+    if (p) {
+       if (i == 1 && 
+           (!cm_stricmp_utf8N(p,".dll") ||
+            !cm_stricmp_utf8N(p,".exe") ||
+            !cm_stricmp_utf8N(p,".ini") ||
+            !cm_stricmp_utf8N(p,".db") ||
+            !cm_stricmp_utf8N(p,".drv")))
+           return 1;
+    }
+    return 0;
+}
+
 /* search for a cell, and either return an error code if we don't find it,
  * or return 0 if we do, in which case we also fill in the addresses in
  * the cellp field.
@@ -108,174 +111,490 @@ static long cm_ParsePair(char *lineBufferp, char *leftp, char *rightp)
  * If the caller wants the "real" cell name, it puts a non-null pointer in
  * newCellNamep.  Anomaly:  if cellNamep is ambiguous, we may modify
  * newCellNamep but return an error code.
+ *
+ * Linked Cells: the CellServDB format permits linked cells
+ *   >cell [linked-cell] #Description
+ *
+ * newCellNamep and linkedNamep are required to be CELL_MAXNAMELEN in size.
  */
 long cm_SearchCellFile(char *cellNamep, char *newCellNamep,
-       cm_configProc_t *procp, void *rockp)
+                       cm_configProc_t *procp, void *rockp)
 {
-       char wdir[256];
-    int tlen;
-    FILE *tfilep, *bestp, *tempp;
-    char *tp;
-    char lineBuffer[256];
+    return cm_SearchCellFileEx(cellNamep, newCellNamep, NULL, procp, rockp);
+}
+
+long cm_SearchCellFileEx(char *cellNamep, char *newCellNamep,
+                         char *linkedNamep,
+                         cm_configProc_t *procp, void *rockp)
+{
+    char wdir[MAX_PATH]="";
+    FILE *tfilep = NULL, *bestp, *tempp;
+    char *tp, *linkp;
+    char lineBuffer[257];
     struct hostent *thp;
     char *valuep;
     struct sockaddr_in vlSockAddr;
-    int inRightCell;
-    int foundCell;
+    int inRightCell = 0;
+    int foundCell = 0;
     long code;
-       int tracking = 1, partial = 0;
-#if defined(DJGPP) || defined(AFS_WIN95_ENV)
-       long ip_addr;
-    int c1, c2, c3, c4;
-    char aname[256];
-#endif
-    char *afsconf_path;
+    int tracking = 1, partial = 0;
 
-       foundCell = 0;
-
-#if !defined(DJGPP)
-       code = GetWindowsDirectory(wdir, sizeof(wdir));
-    if (code == 0 || code > sizeof(wdir)) 
-        return -1;
+    if ( IsWindowsModule(cellNamep) )
+       return -3;
 
-       /* add trailing backslash, if required */
-    tlen = strlen(wdir);
-    if (wdir[tlen-1] != '\\') strcat(wdir, "\\");
-#else
-    strcpy(wdir, cm_confDir);
-    strcat(wdir,"/");
-#endif /* !DJGPP */
-        
-    strcat(wdir, AFS_CELLSERVDB);
-
-    tfilep = fopen(wdir, "r");
-
-    if (!tfilep) {
-        /* If we are using DJGPP client, cellservdb will be in afsconf dir. */
-        /* If we are in Win95 here, we are linking with klog etc. and are
-        using DJGPP client even though DJGPP is not defined.  So we still
-        need to check AFSCONF for location. */
-        afsconf_path = getenv("AFSCONF");
-        if (!afsconf_path)
-            strcpy(wdir, AFSDIR_CLIENT_ETC_DIRPATH);
-        else
-            strcpy(wdir, afsconf_path);
-        strcat(wdir, "/");
-        strcat(wdir, AFS_CELLSERVDB_UNIX);
-        /*fprintf(stderr, "opening cellservdb file %s\n", wdir);*/
+    cm_GetCellServDB(wdir, sizeof(wdir));
+    if (*wdir)
         tfilep = fopen(wdir, "r");
-        if (!tfilep) return -2;
-    }
 
-       bestp = fopen(wdir, "r");
-        
-       /* have we seen the cell line for the guy we're looking for? */
-       inRightCell = 0;
-       while (1) {
+    if (!tfilep) 
+        return -2;
+
+    bestp = fopen(wdir, "r");
+    
+#ifdef CELLSERV_DEBUG
+    osi_Log2(afsd_logp,"cm_searchfile fopen handle[%p], wdir[%s]", bestp, 
+            osi_LogSaveString(afsd_logp,wdir));
+#endif
+    /* have we seen the cell line for the guy we're looking for? */
+    while (1) {
+        linkp = NULL;
         tp = fgets(lineBuffer, sizeof(lineBuffer), tfilep);
         if (tracking)
-                       (void) fgets(lineBuffer, sizeof(lineBuffer), bestp);
+           (void) fgets(lineBuffer, sizeof(lineBuffer), bestp);
         if (tp == NULL) {
-                       if (feof(tfilep)) {
-                               /* hit EOF */
-                               if (partial) {
-                                       /*
-                                        * found partial match earlier;
-                                        * now go back to it
-                                        */
-                                       tempp = bestp;
-                                       bestp = tfilep;
-                                       tfilep = tempp;
-                                       inRightCell = 1;
-                                       partial = 0;
-                                       continue;
-                               }
-                               else {
-                                       fclose(tfilep);
-                                       fclose(bestp);
-                                       return (foundCell? 0 : -3);
-                               }
-                       }
-        }
+           if (feof(tfilep)) {
+               /* hit EOF */
+               if (partial) {
+                   /*
+                    * found partial match earlier;
+                    * now go back to it
+                    */
+                   tempp = bestp;
+                   bestp = tfilep;
+                   tfilep = tempp;
+                   inRightCell = 1;
+                   partial = 0;
+                   continue;
+               }
+               else {
+                   fclose(tfilep);
+                   fclose(bestp);
+                   return (foundCell? 0 : -3);
+               }
+           }
+        }      
 
         /* turn trailing cr or lf into null */
-        tp = strchr(lineBuffer, '\r');
+        tp = strrchr(lineBuffer, '\r');
         if (tp) *tp = 0;
-        tp = strchr(lineBuffer, '\n');
+        tp = strrchr(lineBuffer, '\n');
         if (tp) *tp = 0;
 
-               /* skip blank lines */
+       /* skip blank lines */
         if (lineBuffer[0] == 0) continue;
 
+        /*
+         * The format is:
+         *   >[cell] [linked-cell] #[Description]
+         * where linked-cell and Description are optional
+         */
         if (lineBuffer[0] == '>') {
-                       /* trim off at white space or '#' chars */
-            tp = strchr(lineBuffer, ' ');
-            if (tp) *tp = 0;
-            tp = strchr(lineBuffer, '\t');
-            if (tp) *tp = 0;
-            tp = strchr(lineBuffer, '#');
-            if (tp) *tp = 0;
+            if (inRightCell) {
+                fclose(tfilep);
+                fclose(bestp);
+                return(foundCell ? 0 : -6);
+            }
 
-                       /* now see if this is the right cell */
+            /* 
+             * terminate the cellname at the first white space
+             * leaving 'tp' pointing to the next string if any
+             */
+            for (tp = &lineBuffer[1]; tp && !isspace(*tp); tp++);
+            if (tp) {
+                *tp = '\0';
+                for (tp++ ;tp && isspace(*tp); tp++);
+                if (*tp != '#') {
+                    linkp = tp;
+                    for (; tp && !isspace(*tp); tp++);
+                    if (tp) 
+                        *tp = '\0';
+                }
+            }
+
+           /* now see if this is the right cell */
             if (stricmp(lineBuffer+1, cellNamep) == 0) {
-                               /* found the cell we're looking for */
-                               if (newCellNamep)
-                                       strcpy(newCellNamep, lineBuffer+1);
+               /* found the cell we're looking for */
+               if (newCellNamep) {
+                   strncpy(newCellNamep, lineBuffer+1,CELL_MAXNAMELEN);
+                    newCellNamep[CELL_MAXNAMELEN-1] = '\0';
+                    strlwr(newCellNamep);
+                }
+                if (linkedNamep) {
+                    strncpy(linkedNamep, linkp ? linkp : "", CELL_MAXNAMELEN);
+                    linkedNamep[CELL_MAXNAMELEN-1] = '\0';
+                    strlwr(linkedNamep);
+                }
                 inRightCell = 1;
-                               tracking = 0;
-                       }
-                       else if (strnicmp(lineBuffer+1, cellNamep,
-                               strlen(cellNamep)) == 0) {
-                               /* partial match */
-                               if (partial) {  /* ambiguous */
-                                       fclose(tfilep);
-                                       fclose(bestp);
-                                       return -5;
-                               }
-                               if (newCellNamep)
-                                       strcpy(newCellNamep, lineBuffer+1);
-                               inRightCell = 0;
-                               tracking = 0;
-                               partial = 1;
-                       }
+               tracking = 0;
+#ifdef CELLSERV_DEBUG                
+               osi_Log2(afsd_logp, "cm_searchfile is cell inRightCell[%p], linebuffer[%s]",
+                        inRightCell, osi_LogSaveString(afsd_logp,lineBuffer));
+#endif
+           }
+           else if (cm_stricmp_utf8(lineBuffer+1, cellNamep) == 0) {
+               /* partial match */
+               if (partial) {  /* ambiguous */
+                   fclose(tfilep);
+                   fclose(bestp);
+                   return -5;
+               }
+               if (newCellNamep) {
+                   strncpy(newCellNamep, lineBuffer+1,CELL_MAXNAMELEN);
+                    newCellNamep[CELL_MAXNAMELEN-1] = '\0';
+                    strlwr(newCellNamep);
+                }
+                if (linkedNamep) {
+                    strncpy(linkedNamep, linkp ? linkp : "", CELL_MAXNAMELEN);
+                    linkedNamep[CELL_MAXNAMELEN-1] = '\0';
+                    strlwr(linkedNamep);
+                }
+               inRightCell = 0;
+               tracking = 0;
+               partial = 1;
+           }
             else inRightCell = 0;
         }
         else {
-#if !defined(DJGPP) && !defined(AFS_WIN95_ENV)
             valuep = strchr(lineBuffer, '#');
-                       if (valuep == NULL) {
-                               fclose(tfilep);
-                               fclose(bestp);
-                               return -4;
-                       }
+           if (valuep == NULL) {
+               fclose(tfilep);
+               fclose(bestp);
+               return -4;
+           }
             valuep++;  /* skip the "#" */
 
             valuep += strspn(valuep, " \t"); /* skip SP & TAB */
             /* strip spaces and tabs in the end. They should not be there according to CellServDB format
-            so do this just in case                        */
+             * so do this just in case                        
+            */
             while (valuep[strlen(valuep) - 1] == ' ' || valuep[strlen(valuep) - 1] == '\t') 
                 valuep[strlen(valuep) - 1] = '\0';
 
-#endif /* !DJGPP */
-                       if (inRightCell) {
-#if !defined(DJGPP) && !defined(AFS_WIN95_ENV)
-                               /* add the server to the VLDB list */
-                thp = gethostbyname(valuep);
-                if (thp) {
-                                       memcpy(&vlSockAddr.sin_addr.s_addr, thp->h_addr,
-                            sizeof(long));
-                    vlSockAddr.sin_family = AF_INET;
-                    /* sin_port supplied by connection code */
-                                       if (procp)
-                                               (*procp)(rockp, &vlSockAddr, valuep);
-                    foundCell = 1;
-                               }
-#else
-                /* For DJGPP, we will read IP address instead
-                of name/comment field */
-                code = sscanf(lineBuffer, "%d.%d.%d.%d #%s",
-                               &c1, &c2, &c3, &c4, aname);
-                tp = (char *) &ip_addr;
+           if (inRightCell) {
+                char hostname[256];
+                int  i, isClone = 0;
+
+                isClone = (lineBuffer[0] == '[');
+
+                /* copy just the first word and ignore trailing white space */
+                for ( i=0; valuep[i] && !isspace(valuep[i]) && i<sizeof(hostname); i++)
+                    hostname[i] = valuep[i];
+                valuep[i] = '\0';
+
+               /* add the server to the VLDB list */
+                WSASetLastError(0);
+                thp = gethostbyname(hostname);
+#ifdef CELLSERV_DEBUG
+               osi_Log3(afsd_logp,"cm_searchfile inRightCell thp[%p], valuep[%s], WSAGetLastError[%d]",
+                        thp, osi_LogSaveString(afsd_logp,hostname), WSAGetLastError());
+#endif
+               if (thp) {
+                    int foundAddr = 0;
+                    for (i=0 ; thp->h_addr_list[i]; i++) {
+                        if (thp->h_addrtype != AF_INET)
+                            continue;
+                        memcpy(&vlSockAddr.sin_addr.s_addr, thp->h_addr_list[i],
+                               sizeof(long));
+                        vlSockAddr.sin_family = AF_INET;
+                        /* sin_port supplied by connection code */
+                        if (procp)
+                            (*procp)(rockp, &vlSockAddr, hostname, 0);
+                        foundAddr = 1;
+                    }
+                    /* if we didn't find a valid address, force the use of the specified one */
+                    if (!foundAddr)
+                        thp = NULL;
+               }
+                if (!thp) {
+                    afs_uint32 ip_addr;
+                   unsigned int c1, c2, c3, c4;
+                    
+                    /* Since there is no gethostbyname() data 
+                    * available we will read the IP address
+                    * stored in the CellServDB file
+                     */
+                    if (isClone)
+                        code = sscanf(lineBuffer, "[%u.%u.%u.%u]",
+                                      &c1, &c2, &c3, &c4);
+                    else
+                        code = sscanf(lineBuffer, " %u.%u.%u.%u",
+                                      &c1, &c2, &c3, &c4);
+                    if (code == 4 && c1<256 && c2<256 && c3<256 && c4<256) {
+                        tp = (unsigned char *) &ip_addr;
+                        *tp++ = c1;
+                        *tp++ = c2;
+                        *tp++ = c3;
+                        *tp++ = c4;
+                        memcpy(&vlSockAddr.sin_addr.s_addr, &ip_addr,
+                                sizeof(long));
+                        vlSockAddr.sin_family = AF_INET;
+                        /* sin_port supplied by connection code */
+                        if (procp)
+                            (*procp)(rockp, &vlSockAddr, hostname, 0);
+                    }
+                }
+                foundCell = 1;
+            }
+        }      /* a vldb line */
+    }          /* while loop processing all lines */
+
+    /* if for some unknown reason cell is not found, return negative code (-11) ??? */
+    return (foundCell) ? 0 : -11;
+}
+
+/*
+ * The CellServDB registry schema is as follows:
+ *
+ * HKLM\SOFTWARE\OpenAFS\Client\CellServDB\[cellname]\
+ *   "LinkedCell"    REG_SZ "[cellname]" 
+ *   "Description"   REG_SZ "[comment]"
+ *   "ForceDNS"      DWORD  {0,1}
+ *
+ * HKLM\SOFTWARE\OpenAFS\Client\CellServDB\[cellname]\[servername]\
+ *   "HostName"      REG_SZ "[hostname]" 
+ *   "IPv4Address"   REG_SZ "[address]" 
+ *   "IPv6Address"   REG_SZ "[address]"   <future>
+ *   "Comment"       REG_SZ "[comment]"
+ *   "Rank"          DWORD  "0..65535"
+ *   "Clone"         DWORD  "{0,1}"
+ *   "vlserver"      DWORD  "7003"        <future>
+ *   "ptserver"      DWORD  ...           <future>
+ *
+ * ForceDNS is implied non-zero if there are no [servername]
+ * keys under the [cellname] key.  Otherwise, ForceDNS is zero.
+ * If [servername] keys are specified and none of them evaluate
+ * to a valid server configuration, the return code is success.
+ * This prevents failover to the CellServDB file or DNS.
+ */
+long cm_SearchCellRegistry(afs_uint32 client, 
+                           char *cellNamep, char *newCellNamep,
+                           char *linkedNamep,
+                           cm_configProc_t *procp, void *rockp)
+{
+    HKEY hkCellServDB = 0, hkCellName = 0, hkServerName = 0;
+    DWORD dwType, dwSize;
+    DWORD dwCells, dwServers, dwForceDNS;
+    DWORD dwIndex, dwRank;
+    unsigned short ipRank;
+    LONG code;
+    FILETIME ftLastWriteTime;
+    char szCellName[CELL_MAXNAMELEN];
+    char szServerName[MAXHOSTCHARS];
+    char szHostName[MAXHOSTCHARS];
+    char szAddr[64];
+    struct hostent *thp;
+    struct sockaddr_in vlSockAddr;
+    char * s;
+
+    if ( IsWindowsModule(cellNamep) )
+       return -1;
+
+    /* No Server CellServDB list (yet) */
+    if ( !client )
+        return CM_ERROR_NOSUCHCELL;
+
+    if (RegOpenKeyEx( HKEY_LOCAL_MACHINE,
+                      AFSREG_CLT_OPENAFS_SUBKEY "\\CellServDB",
+                      0,
+                      KEY_READ|KEY_WRITE|KEY_QUERY_VALUE,
+                      &hkCellServDB) != ERROR_SUCCESS)
+        return CM_ERROR_NOSUCHCELL;
+
+    if (RegOpenKeyEx( hkCellServDB, 
+                      cellNamep,
+                      0,
+                      KEY_READ|KEY_WRITE|KEY_QUERY_VALUE,
+                      &hkCellName) != ERROR_SUCCESS) {
+        BOOL bFound = 0;
+
+        /* We did not find an exact match.  Much search for partial matches. */
+
+        code = RegQueryInfoKey( hkCellServDB,
+                                NULL,  /* lpClass */
+                                NULL,  /* lpcClass */
+                                NULL,  /* lpReserved */
+                                &dwCells,  /* lpcSubKeys */
+                                NULL,  /* lpcMaxSubKeyLen */
+                                NULL,  /* lpcMaxClassLen */
+                                NULL,  /* lpcValues */
+                                NULL,  /* lpcMaxValueNameLen */
+                                NULL,  /* lpcMaxValueLen */
+                                NULL,  /* lpcbSecurityDescriptor */
+                                &ftLastWriteTime /* lpftLastWriteTime */
+                                );
+        if (code != ERROR_SUCCESS)
+            dwCells = 0;
+
+        /* 
+         * We search the entire list to ensure that there is only
+         * one prefix match.  If there is more than one, we return none.
+         */
+        for ( dwIndex = 0; dwIndex < dwCells; dwIndex++ ) {
+            dwSize = CELL_MAXNAMELEN;
+            code = RegEnumKeyEx( hkCellServDB, dwIndex, szCellName, &dwSize, NULL, 
+                                 NULL, NULL, &ftLastWriteTime);
+            if (code != ERROR_SUCCESS)
+                continue;
+            szCellName[CELL_MAXNAMELEN-1] = '\0';
+            strlwr(szCellName);
+
+            /* if not a prefix match, try the next key */
+            if (strncmp(cellNamep, szCellName, strlen(cellNamep)))
+                continue;
+
+            /* If we have a prefix match and we already found another
+             * match, return neither */
+            if (hkCellName) {
+                bFound = 0;
+                RegCloseKey( hkCellName);
+                break;
+            }
+
+            if (RegOpenKeyEx( hkCellServDB, 
+                              szCellName,
+                              0,
+                              KEY_READ|KEY_WRITE|KEY_QUERY_VALUE,
+                              &hkCellName) != ERROR_SUCCESS)
+                continue;
+
+            if (newCellNamep) {
+                strncpy(newCellNamep, szCellName, CELL_MAXNAMELEN);
+                newCellNamep[CELL_MAXNAMELEN-1] = '\0';
+            }
+            bFound = 1;
+        }
+
+        if ( !bFound ) {
+            RegCloseKey(hkCellServDB);
+            return CM_ERROR_NOSUCHCELL;
+        }
+    } else if (newCellNamep) {
+        strncpy(newCellNamep, cellNamep, CELL_MAXNAMELEN);
+        newCellNamep[CELL_MAXNAMELEN-1] = '\0';
+        strlwr(newCellNamep);
+    }
+
+    if (linkedNamep) {
+        dwSize = CELL_MAXNAMELEN;
+        code = RegQueryValueEx(hkCellName, "LinkedCell", NULL, &dwType,
+                                (BYTE *) linkedNamep, &dwSize);
+        if (code == ERROR_SUCCESS && dwType == REG_SZ) {
+            linkedNamep[CELL_MAXNAMELEN-1] = '\0';
+            strlwr(linkedNamep);
+        } else {
+            linkedNamep[0] = '\0';
+        }
+    }
+
+    /* Check to see if DNS lookups are required */
+    dwSize = sizeof(DWORD);
+    code = RegQueryValueEx(hkCellName, "ForceDNS", NULL, &dwType,
+                            (BYTE *) &dwForceDNS, &dwSize);
+    if (code == ERROR_SUCCESS && dwType == REG_DWORD) {
+        if (dwForceDNS)
+            goto done;
+    } else {
+        dwForceDNS = 0;
+    }
+
+    /* 
+     * Using the defined server list.  Enumerate and populate
+     * the server list for the cell.
+     */
+    code = RegQueryInfoKey( hkCellName,
+                            NULL,  /* lpClass */
+                            NULL,  /* lpcClass */
+                            NULL,  /* lpReserved */
+                            &dwServers,  /* lpcSubKeys */
+                            NULL,  /* lpcMaxSubKeyLen */
+                            NULL,  /* lpcMaxClassLen */
+                            NULL,  /* lpcValues */
+                            NULL,  /* lpcMaxValueNameLen */
+                            NULL,  /* lpcMaxValueLen */
+                            NULL,  /* lpcbSecurityDescriptor */
+                            &ftLastWriteTime /* lpftLastWriteTime */
+                            );
+    if (code != ERROR_SUCCESS)
+        dwServers = 0;
+
+    for ( dwIndex = 0; dwIndex < dwServers; dwIndex++ ) {
+        dwSize = MAXHOSTCHARS;
+        code = RegEnumKeyEx( hkCellName, dwIndex, szServerName, &dwSize, NULL, 
+                             NULL, NULL, &ftLastWriteTime);
+        if (code != ERROR_SUCCESS)
+            continue;
+
+        szServerName[MAXHOSTCHARS-1] = '\0';
+        if (RegOpenKeyEx( hkCellName, 
+                          szServerName,
+                          0,
+                          KEY_READ|KEY_WRITE|KEY_QUERY_VALUE,
+                          &hkServerName) != ERROR_SUCCESS)
+            continue;
+
+        /* We have a handle to a valid server key.  Now we need 
+         * to add the server to the cell */
+        
+        /* First, see if there is an alternate hostname specified */
+        dwSize = MAXHOSTCHARS;
+        code = RegQueryValueEx(hkServerName, "HostName", NULL, &dwType,
+                                (BYTE *) szHostName, &dwSize);
+        if (code == ERROR_SUCCESS && dwType == REG_SZ) {
+            szHostName[MAXHOSTCHARS-1] = '\0';
+            strlwr(szHostName);
+            s = szHostName;
+        } else {
+            s = szServerName;
+        }
+
+        dwSize = sizeof(DWORD);
+        code = RegQueryValueEx(hkServerName, "Rank", NULL, &dwType,
+                                (BYTE *) &dwRank, &dwSize);
+        if (code == ERROR_SUCCESS && dwType == REG_DWORD) {
+            ipRank = (unsigned short)(dwRank <= 65535 ? dwRank : 65535);
+        } else {
+            ipRank = 0;
+        }
+
+        dwSize = sizeof(szAddr);
+        code = RegQueryValueEx(hkServerName, "IPv4Address", NULL, &dwType,
+                                (BYTE *) szAddr, &dwSize);
+        if (code == ERROR_SUCCESS && dwType == REG_SZ) {
+            szAddr[63] = '\0';
+        } else {
+            szAddr[0] = '\0';
+        }
+
+        WSASetLastError(0);
+        thp = gethostbyname(s);
+        if (thp) {
+            memcpy(&vlSockAddr.sin_addr.s_addr, thp->h_addr, sizeof(long));
+            vlSockAddr.sin_family = AF_INET;
+            /* sin_port supplied by connection code */
+            if (procp)
+                (*procp)(rockp, &vlSockAddr, s, ipRank);
+        } else if (szAddr[0]) {
+            afs_uint32 ip_addr;
+            unsigned int c1, c2, c3, c4;
+
+            /* Since there is no gethostbyname() data 
+             * available we will read the IP address
+             * stored in the CellServDB file
+             */
+            code = sscanf(szAddr, " %u.%u.%u.%u",
+                           &c1, &c2, &c3, &c4);
+            if (code == 4 && c1<256 && c2<256 && c3<256 && c4<256) {
+                unsigned char * tp = (unsigned char *) &ip_addr;
                 *tp++ = c1;
                 *tp++ = c2;
                 *tp++ = c3;
@@ -285,354 +604,352 @@ long cm_SearchCellFile(char *cellNamep, char *newCellNamep,
                 vlSockAddr.sin_family = AF_INET;
                 /* sin_port supplied by connection code */
                 if (procp)
-                    (*procp)(rockp, &vlSockAddr, valuep);
-                foundCell = 1;
-#endif /* !DJGPP */
+                    (*procp)(rockp, &vlSockAddr, s, ipRank);
             }
-        }      /* a vldb line */
-    }          /* while loop processing all lines */
+        }
 
-    /* if for some unknown reason cell is not found, return negative code (-11) ??? */
-    return (foundCell) ? 0 : -11;
+        RegCloseKey( hkServerName);
+    }
+
+  done:
+    RegCloseKey(hkCellName);
+    RegCloseKey(hkCellServDB);
+
+    return ((dwForceDNS || dwServers == 0) ? CM_ERROR_FORCE_DNS_LOOKUP : 0);
+}
+
+long cm_EnumerateCellRegistry(afs_uint32 client, cm_enumCellRegistryProc_t *procp, void *rockp)
+{
+    HKEY hkCellServDB = 0;
+    DWORD dwType, dwSize;
+    DWORD dwCells;
+    DWORD dwIndex;
+    LONG code;
+    FILETIME ftLastWriteTime;
+    char szCellName[CELL_MAXNAMELEN];
+
+    /* No server CellServDB in the registry. */
+    if (!client || procp == NULL)
+        return 0;
+
+    if (RegOpenKeyEx( HKEY_LOCAL_MACHINE,
+                      AFSREG_CLT_OPENAFS_SUBKEY "\\CellServDB",
+                      0,
+                      KEY_READ|KEY_WRITE|KEY_QUERY_VALUE,
+                      &hkCellServDB) != ERROR_SUCCESS)
+        return 0;
+
+    code = RegQueryInfoKey( hkCellServDB,
+                            NULL,  /* lpClass */
+                            NULL,  /* lpcClass */
+                            NULL,  /* lpReserved */
+                            &dwCells,  /* lpcSubKeys */
+                            NULL,  /* lpcMaxSubKeyLen */
+                            NULL,  /* lpcMaxClassLen */
+                            NULL,  /* lpcValues */
+                            NULL,  /* lpcMaxValueNameLen */
+                            NULL,  /* lpcMaxValueLen */
+                            NULL,  /* lpcbSecurityDescriptor */
+                            &ftLastWriteTime /* lpftLastWriteTime */
+                            );
+    if (code != ERROR_SUCCESS)
+        dwCells = 0;
+
+    /* 
+     * Enumerate each Cell and 
+     */
+    for ( dwIndex = 0; dwIndex < dwCells; dwIndex++ ) {
+        dwSize = CELL_MAXNAMELEN;
+        code = RegEnumKeyEx( hkCellServDB, dwIndex, szCellName, &dwSize, NULL, 
+                             NULL, NULL, &ftLastWriteTime);
+        if (code != ERROR_SUCCESS)
+            continue;
+        szCellName[CELL_MAXNAMELEN-1] = '\0';
+        strlwr(szCellName);
+
+        (*procp)(rockp, szCellName);
+    }
+
+    RegCloseKey(hkCellServDB);
+    return 0;
 }
 
+/* newCellNamep is required to be CELL_MAXNAMELEN in size */
 long cm_SearchCellByDNS(char *cellNamep, char *newCellNamep, int *ttl,
-               cm_configProc_t *procp, void *rockp)
+                        cm_configProc_t *procp, void *rockp)
 {
 #ifdef AFS_AFSDB_ENV
-     int rc;
-     int cellHosts[AFSMAXCELLHOSTS];
-     int numServers;
-     int i;
-     struct sockaddr_in vlSockAddr;
-
-     rc = getAFSServer(cellNamep, cellHosts, &numServers, ttl);
-     if (rc == 0 && numServers > 0) {     /* found the cell */
-       for (i = 0; i < numServers; i++) {
-           memcpy(&vlSockAddr.sin_addr.s_addr, &cellHosts[i],
-               sizeof(long));
-           vlSockAddr.sin_family = AF_INET;
-           /* sin_port supplied by connection code */
-           if (procp)
-          (*procp)(rockp, &vlSockAddr, NULL);
-           if(newCellNamep)
-          strcpy(newCellNamep,cellNamep);
-       }
-       return 0;   /* found cell */
-     }
-     else
-#endif /* AFS_AFSDB_ENV */
+    int rc;
+    int  cellHostAddrs[AFSMAXCELLHOSTS];
+    char cellHostNames[AFSMAXCELLHOSTS][MAXHOSTCHARS];
+    unsigned short ipRanks[AFSMAXCELLHOSTS];
+    int numServers;
+    int i;
+    struct sockaddr_in vlSockAddr;
+#ifdef CELLSERV_DEBUG
+    osi_Log1(afsd_logp,"SearchCellDNS-Doing search for [%s]", osi_LogSaveString(afsd_logp,cellNamep));
+#endif
+    if ( IsWindowsModule(cellNamep) )
+       return -1;
+    rc = getAFSServer(cellNamep, cellHostAddrs, cellHostNames, ipRanks, &numServers, ttl);
+    if (rc == 0 && numServers > 0) {     /* found the cell */
+        for (i = 0; i < numServers; i++) {
+            memcpy(&vlSockAddr.sin_addr.s_addr, &cellHostAddrs[i],
+                   sizeof(long));
+            vlSockAddr.sin_family = AF_INET;
+            /* sin_port supplied by connection code */
+            if (procp)
+                (*procp)(rockp, &vlSockAddr, cellHostNames[i], ipRanks[i]);
+        }
+        if (newCellNamep) {
+            strncpy(newCellNamep,cellNamep,CELL_MAXNAMELEN);
+            newCellNamep[CELL_MAXNAMELEN-1] = '\0';
+            strlwr(newCellNamep);
+        }
+        return 0;   /* found cell */
+    }
+    else
        return -1;  /* not found */
+#else
+    return -1;  /* not found */
+#endif /* AFS_AFSDB_ENV */
 }
 
-#if !defined(DJGPP) && !defined(AFS_WIN95_ENV)
-/* look up the root cell's name in the Registry */
-long cm_GetRootCellName(char *cellNamep)
+/* use cm_GetConfigDir() plus AFS_CELLSERVDB to 
+ * generate the fully qualified name of the CellServDB 
+ * file.
+ */
+long cm_GetCellServDB(char *cellNamep, afs_uint32 len)
 {
-       DWORD code, dummyLen;
-       HKEY parmKey;
-
-       code = RegOpenKeyEx(HKEY_LOCAL_MACHINE, AFSConfigKeyName,
-                               0, KEY_QUERY_VALUE, &parmKey);
-       if (code != ERROR_SUCCESS)
-               return -1;
-
-       dummyLen = 256;
-       code = RegQueryValueEx(parmKey, "Cell", NULL, NULL,
-                               cellNamep, &dummyLen);
-       RegCloseKey (parmKey);
-       if (code != ERROR_SUCCESS)
-               return -1;
-
-       return 0;
+    size_t tlen;
+    
+    cm_GetConfigDir(cellNamep, len);
+
+    /* add trailing backslash, if required */
+    tlen = (int)strlen(cellNamep);
+    if (tlen) {
+        if (cellNamep[tlen-1] != '\\') {
+            strncat(cellNamep, "\\", len);
+            cellNamep[len-1] = '\0';
+        }
+        
+        strncat(cellNamep, AFS_CELLSERVDB, len);
+        cellNamep[len-1] = '\0';
+    }
+    return 0;
 }
-#else
-/* look up the root cell's name in the THISCELL file */
+
+/* look up the root cell's name in the Registry 
+ * Input buffer must be at least CELL_MAXNAMELEN 
+ * in size.  (Defined in cm_cell.h)
+ */
 long cm_GetRootCellName(char *cellNamep)
 {
-        FILE *thisCell;
-        char thisCellPath[256];
-        char *newline;
-
-#ifdef DJGPP
-        strcpy(thisCellPath, cm_confDir);
-#else
-        /* Win 95 */
-        char *afsconf_path;
-        afsconf_path = getenv("AFSCONF");
-        if (!afsconf_path)
-          strcpy(thisCellPath, AFSDIR_CLIENT_ETC_DIRPATH);
-        else
-          strcpy(thisCellPath, afsconf_path);
-#endif
-        strcat(thisCellPath,"/");
+    DWORD code, dummyLen;
+    HKEY parmKey;
 
-        strcat(thisCellPath, AFS_THISCELL);
-        thisCell = fopen(thisCellPath, "r");
-        if (thisCell == NULL)
-          return -1;
-
-        fgets(cellNamep, 256, thisCell);
-        fclose(thisCell);
+    code = RegOpenKeyEx(HKEY_LOCAL_MACHINE, AFSREG_CLT_SVC_PARAM_SUBKEY,
+                        0, KEY_QUERY_VALUE, &parmKey);
+    if (code != ERROR_SUCCESS)
+        return -1;
 
-        newline = strrchr(cellNamep,'\n');
-        if (newline) *newline = '\0';
-        newline = strrchr(cellNamep,'\r');
-        if (newline) *newline = '\0';
+    dummyLen = CELL_MAXNAMELEN;
+    code = RegQueryValueEx(parmKey, "Cell", NULL, NULL,
+                               cellNamep, &dummyLen);
+    RegCloseKey (parmKey);
+    if (code != ERROR_SUCCESS || cellNamep[0] == 0)
+        return -1;
 
-        return 0;
+    return 0;
 }
-#endif /* !DJGPP */
 
 cm_configFile_t *cm_CommonOpen(char *namep, char *rwp)
 {
-       char wdir[256];
-    long code;
-    long tlen;
-    FILE *tfilep;
+    char wdir[MAX_PATH]="";
+    FILE *tfilep = NULL;
 
-#if !defined(DJGPP) && !defined(AFS_WIN95_ENV)
-       code = GetWindowsDirectory(wdir, sizeof(wdir));
-        if (code == 0 || code > sizeof(wdir)) 
-            return 0;
-        
-       /* add trailing backslash, if required */
-        tlen = strlen(wdir);
-        if (wdir[tlen-1] != '\\') strcat(wdir, "\\");
-#else
-#ifdef DJGPP
-        strcpy(wdir,cm_confDir);
-#else
-        char *afsconf_path = getenv("AFSCONF");
-        if (!afsconf_path)
-          strcpy(wdir, AFSDIR_CLIENT_ETC_DIRPATH);
-        else
-          strcpy(wdir, afsconf_path);
-#endif /* !DJGPP */
-        strcat(wdir,"/");
-#endif /* DJGPP || WIN95 */
-
-        strcat(wdir, namep);
+    cm_GetConfigDir(wdir, sizeof(wdir));
+    if (*wdir) {
+        strncat(wdir, namep, sizeof(wdir));
+        wdir[sizeof(wdir)-1] = '\0';
         
         tfilep = fopen(wdir, rwp);
+    }
+    return ((cm_configFile_t *) tfilep);        
+}      
 
-       return ((cm_configFile_t *) tfilep);        
-}
-
-#ifndef DJGPP
 long cm_WriteConfigString(char *labelp, char *valuep)
 {
-       DWORD code, dummyDisp;
-       HKEY parmKey;
-
-       code = RegCreateKeyEx(HKEY_LOCAL_MACHINE, AFSConfigKeyName,
-                               0, "container", 0, KEY_SET_VALUE, NULL,
-                               &parmKey, &dummyDisp);
-       if (code != ERROR_SUCCESS)
-               return -1;
-
-       code = RegSetValueEx(parmKey, labelp, 0, REG_SZ,
-                            valuep, strlen(valuep) + 1);
-       RegCloseKey (parmKey);
-       if (code != ERROR_SUCCESS)
-               return -1;
-
-        return 0;
+    DWORD code, dummyDisp;
+    HKEY parmKey;
+
+    code = RegCreateKeyEx(HKEY_LOCAL_MACHINE, AFSREG_CLT_SVC_PARAM_SUBKEY,
+                          0, "container", 0, KEY_SET_VALUE, NULL,
+                          &parmKey, &dummyDisp);
+    if (code != ERROR_SUCCESS)
+       return -1;
+
+    code = RegSetValueEx(parmKey, labelp, 0, REG_SZ,
+                         valuep, (DWORD)strlen(valuep) + 1);
+    RegCloseKey (parmKey);
+    if (code != ERROR_SUCCESS)
+       return (long)-1;
+
+    return (long)0;
 }
-#endif /* !DJGPP */
 
-#ifndef DJGPP
 long cm_WriteConfigInt(char *labelp, long value)
 {
-       DWORD code, dummyDisp;
-       HKEY parmKey;
-
-       code = RegCreateKeyEx(HKEY_LOCAL_MACHINE, AFSConfigKeyName,
-                               0, "container", 0, KEY_SET_VALUE, NULL,
-                               &parmKey, &dummyDisp);
-       if (code != ERROR_SUCCESS)
-               return -1;
-
-       code = RegSetValueEx(parmKey, labelp, 0, REG_DWORD,
-                            (LPBYTE)&value, sizeof(value));
-       RegCloseKey (parmKey);
-       if (code != ERROR_SUCCESS)
-               return -1;
-
-       return 0;
+    DWORD code, dummyDisp;
+    HKEY parmKey;
+
+    code = RegCreateKeyEx(HKEY_LOCAL_MACHINE, AFSREG_CLT_SVC_PARAM_SUBKEY,
+                           0, "container", 0, KEY_SET_VALUE, NULL,
+                           &parmKey, &dummyDisp);
+    if (code != ERROR_SUCCESS)
+        return -1;
+
+    code = RegSetValueEx(parmKey, labelp, 0, REG_DWORD,
+                          (LPBYTE)&value, sizeof(value));
+    RegCloseKey (parmKey);
+    if (code != ERROR_SUCCESS)
+        return -1;
+
+    return 0;
 }
-#endif /* !DJGPP */
 
 cm_configFile_t *cm_OpenCellFile(void)
 {
-        cm_configFile_t *cfp;
+    cm_configFile_t *cfp;
 
-       cfp = cm_CommonOpen("afsdcel2.ini", "w");
-       return cfp;
+    cfp = cm_CommonOpen(AFS_CELLSERVDB ".new", "w");
+    return cfp;
 }
 
 long cm_AppendPrunedCellList(cm_configFile_t *ofp, char *cellNamep)
 {
-       cm_configFile_t *tfilep;        /* input file */
-        char *tp;
-        char lineBuffer[256];
-        char *valuep;
-        int inRightCell;
-        int foundCell;
-
-        tfilep = cm_CommonOpen(AFS_CELLSERVDB, "r");
-        if (!tfilep) return -1;
-
-       foundCell = 0;
-
-       /* have we seen the cell line for the guy we're looking for? */
-       inRightCell = 0;
-       while (1) {
-               tp = fgets(lineBuffer, sizeof(lineBuffer), (FILE *)tfilep);
-                if (tp == NULL) {
-                       if (feof((FILE *)tfilep)) {
-                               /* hit EOF */
-                               fclose((FILE *)tfilep);
-                               return 0;
-                       }
-                }
-                
-                /* turn trailing cr or lf into null */
-                tp = strchr(lineBuffer, '\r');
-                if (tp) *tp = 0;
-                tp = strchr(lineBuffer, '\n');
-                if (tp) *tp = 0;
+    cm_configFile_t *tfilep;   /* input file */
+    char *tp;
+    char lineBuffer[256];
+    char *valuep;
+    int inRightCell;
+    int foundCell;
+
+    tfilep = cm_CommonOpen(AFS_CELLSERVDB, "r");
+    if (!tfilep) 
+        return -1;
+
+    foundCell = 0;
+
+    /* have we seen the cell line for the guy we're looking for? */
+    inRightCell = 0;
+    while (1) {
+        tp = fgets(lineBuffer, sizeof(lineBuffer), (FILE *)tfilep);
+        if (tp == NULL) {
+            if (feof((FILE *)tfilep)) {
+                /* hit EOF */
+                fclose((FILE *)tfilep);
+                return 0;
+            }
+        }
+
+        /* turn trailing cr or lf into null */
+        tp = strchr(lineBuffer, '\r');
+        if (tp) *tp = 0;
+        tp = strchr(lineBuffer, '\n');
+        if (tp) *tp = 0;
                 
-               /* skip blank lines */
-                if (lineBuffer[0] == 0) {
-                       fprintf((FILE *)ofp, "%s\n", lineBuffer);
-                       continue;
-               }
+        /* skip blank lines */
+        if (lineBuffer[0] == 0) {
+            fprintf((FILE *)ofp, "%s\n", lineBuffer);
+            continue;
+        }
 
-                if (lineBuffer[0] == '>') {
-                       /* trim off at white space or '#' chars */
-                        tp = strchr(lineBuffer, ' ');
-                        if (tp) *tp = 0;
-                        tp = strchr(lineBuffer, '\t');
-                        if (tp) *tp = 0;
-                        tp = strchr(lineBuffer, '#');
-                        if (tp) *tp = 0;
-
-                       /* now see if this is the right cell */
-                       if (strcmp(lineBuffer+1, cellNamep) == 0) {
-                               /* found the cell we're looking for */
-                               inRightCell = 1;
-                       }
-                        else {
-                               inRightCell = 0;
-                                fprintf((FILE *)ofp, "%s\n", lineBuffer);
-                       }
-                }
-                else {
-                       valuep = strchr(lineBuffer, '#');
-                       if (valuep == NULL) return -2;
-                        valuep++;      /* skip the "#" */
-                       if (!inRightCell) {
-                                fprintf((FILE *)ofp, "%s\n", lineBuffer);
-                        }
-                }      /* a vldb line */
-        }              /* while loop processing all lines */
-}
+        if (lineBuffer[0] == '>') {
+            /* trim off at white space or '#' chars */
+            tp = strchr(lineBuffer, ' ');
+            if (tp) *tp = 0;
+            tp = strchr(lineBuffer, '\t');
+            if (tp) *tp = 0;
+            tp = strchr(lineBuffer, '#');
+            if (tp) *tp = 0;
+
+            /* now see if this is the right cell */
+            if (strcmp(lineBuffer+1, cellNamep) == 0) {
+                /* found the cell we're looking for */
+                inRightCell = 1;
+            }
+            else {
+                inRightCell = 0;
+                fprintf((FILE *)ofp, "%s\n", lineBuffer);
+            }
+        }
+        else {
+            valuep = strchr(lineBuffer, '#');
+            if (valuep == NULL) return -2;
+            valuep++;  /* skip the "#" */
+            if (!inRightCell) {
+                fprintf((FILE *)ofp, "%s\n", lineBuffer);
+            }
+        }      /* a vldb line */
+    }          /* while loop processing all lines */
+}       
 
 long cm_AppendNewCell(cm_configFile_t *filep, char *cellNamep)
 {
-       fprintf((FILE *)filep, ">%s\n", cellNamep);
-        return 0;
+    fprintf((FILE *)filep, ">%s\n", cellNamep);
+    return 0;
 }
 
 long cm_AppendNewCellLine(cm_configFile_t *filep, char *linep)
 {
-       fprintf((FILE *)filep, "%s\n", linep);
-        return 0;
+    fprintf((FILE *)filep, "%s\n", linep);
+    return 0;
 }
 
 long cm_CloseCellFile(cm_configFile_t *filep)
 {
-       char wdir[256];
-    char sdir[256];
+    char wdir[MAX_PATH];
+    char sdir[MAX_PATH];
     long code;
     long closeCode;
-    int tlen;
-#ifdef AFS_WIN95_ENV
-    char *afsconf_path;
-#endif
-       closeCode = fclose((FILE *)filep);
+    closeCode = fclose((FILE *)filep);
 
-#if !defined(DJGPP) && !defined(AFS_WIN95_ENV)
-       code = GetWindowsDirectory(wdir, sizeof(wdir));
-        if (code == 0 || code > sizeof(wdir)) 
-           return closeCode;
-        
-       /* add trailing backslash, if required */
-        tlen = strlen(wdir);
-        if (wdir[tlen-1] != '\\') strcat(wdir, "\\");
-#else
-#ifdef DJGPP
-        strcpy(wdir,cm_confDir);
-#else
-        afsconf_path = getenv("AFSCONF");
-        if (!afsconf_path)
-          strcpy(wdir, AFSDIR_CLIENT_ETC_DIRPATH);
-        else
-          strcpy(wdir, afsconf_path);
-#endif /* !DJGPP */
-        strcat(wdir,"/");
-#endif /* DJGPP || WIN95 */
-
-        strcpy(sdir, wdir);
-
-       if (closeCode != 0) {
-               /* something went wrong, preserve original database */
-                strcat(wdir, "afsdcel2.ini");
-                unlink(wdir);
-                return closeCode;
-        }
+    cm_GetConfigDir(wdir, sizeof(wdir));
+    strcpy(sdir, wdir);
 
-        strcat(wdir, AFS_CELLSERVDB);
-        strcat(sdir, "afsdcel2.ini");  /* new file */
-        
-        unlink(wdir);                  /* delete old file */
-        
-        code = rename(sdir, wdir);     /* do the rename */
-        
-        if (code) 
-         code = errno;
-        
-        return code;
-}
+    if (closeCode != 0) {
+        /* something went wrong, preserve original database */
+        strncat(wdir, AFS_CELLSERVDB ".new", sizeof(wdir));
+        wdir[sizeof(wdir)-1] = '\0';
+        unlink(wdir);
+        return closeCode;
+    }
 
-void cm_GetConfigDir(char *dir)
-{
-       char wdir[256];
-    int code;
-    int tlen;
-#ifdef AFS_WIN95_ENV
-    char *afsconf_path;
-#endif
+    strncat(wdir, AFS_CELLSERVDB, sizeof(wdir));
+    wdir[sizeof(wdir)-1] = '\0';
+    strncat(sdir, AFS_CELLSERVDB ".new", sizeof(sdir));/* new file */
+    sdir[sizeof(sdir)-1] = '\0';
 
-#if !defined(DJGPP) && !defined(AFS_WIN95_ENV)
-       code = GetWindowsDirectory(wdir, sizeof(wdir));
-      if (code == 0 || code > sizeof(wdir)) wdir[0] = 0;
-        
-       /* add trailing backslash, if required */
-        tlen = strlen(wdir);
-        if (wdir[tlen-1] != '\\') strcat(wdir, "\\");
-#else
-#ifdef DJGPP
-        strcpy(wdir,cm_confDir);
-#else
-        afsconf_path = getenv("AFSCONF");
-        if (!afsconf_path)
-          strcpy(wdir, AFSDIR_CLIENT_ETC_DIRPATH);
-        else
-          strcpy(wdir, afsconf_path);
-#endif /* !DJGPP */
-        strcat(wdir,"\\");
-#endif /* DJGPP || WIN95 */
-        strcpy(dir, wdir);
+    unlink(sdir);                      /* delete old file */
+
+    code = rename(sdir, wdir); /* do the rename */
+
+    if (code) 
+        code = errno;
+
+    return code;
+}   
+
+void cm_GetConfigDir(char *dir, afs_uint32 len)
+{
+    char * dirp = NULL;
+
+    if (!afssw_GetClientCellServDBDir(&dirp)) {
+        strncpy(dir, dirp, len);
+        dir[len-1] = '\0';
+        free(dirp);
+    } else {
+        dir[0] = '\0';
+    }
 }