From 7a46d3a0766a34816c468f5e00b720994778466b Mon Sep 17 00:00:00 2001
From: Jeffrey Altman <jaltman@mit.edu>
Date: Wed, 2 Jun 2004 06:21:16 +0000
Subject: [PATCH] unc-enable-fs-20040601

 * modify cm_ParseIoctlPath() to be able to handle arbitrary UNC
   paths of the form \\netbiosname\mount\path.  This enables all
   of the fs commands and the shell extension to be able to work
   with UNC paths.

====================
This delta was composed from multiple commits as part of the CVS->Git migration.
The checkin message with each commit was inconsistent.
The following are the additional commit messages.
====================

 * add support for UNC paths
---
 src/WINNT/afsd/cm_ioctl.c | 62 +++++++++++++++++++++++++++++----------
 src/sys/pioctl_nt.c       | 21 ++++++++-----
 2 files changed, 60 insertions(+), 23 deletions(-)

diff --git a/src/WINNT/afsd/cm_ioctl.c b/src/WINNT/afsd/cm_ioctl.c
index 187b9cf77..ebafa9144 100644
--- a/src/WINNT/afsd/cm_ioctl.c
+++ b/src/WINNT/afsd/cm_ioctl.c
@@ -135,30 +135,62 @@ void TranslateExtendedChars(char *str)
 long cm_ParseIoctlPath(smb_ioctl_t *ioctlp, cm_user_t *userp, cm_req_t *reqp,
 	cm_scache_t **scpp)
 {
+    extern char cm_NetbiosName[];
 	long code;
 	cm_scache_t *substRootp;
+    char * relativePath = ioctlp->inDatap;
+
+    /* This is usually the file name, but for StatMountPoint it is the path. */
+    /* ioctlp->inDatap can be either of the form:
+     *    \path\.
+     *    \path\file
+     *    \\netbios-name\submount\path\.
+     *    \\netbios-name\submount\path\file
+     */
+	TranslateExtendedChars(relativePath);
 
-        /* This is usually the file name, but for StatMountPoint it is the path. */
-	TranslateExtendedChars(ioctlp->inDatap);
-
-	code = cm_NameI(cm_rootSCachep, ioctlp->prefix->data,
-		CM_FLAG_CASEFOLD | CM_FLAG_FOLLOW,
-		userp, ioctlp->tidPathp, reqp, &substRootp);
-	if (code) return code;
+    if (relativePath[0] == relativePath[1] &&
+         relativePath[1] == '\\' && 
+         !_strnicmp(cm_NetbiosName,relativePath+2,strlen(cm_NetbiosName))) 
+    {
+        /* We may have found a UNC path. 
+         * If the first component is the NetbiosName,
+         * then throw out the second component (the submount)
+         * since it had better expand into the value of ioctl->tidPathp
+         */
+        char * p;
+        p = relativePath + 2 + strlen(cm_NetbiosName) + 1;
+        if ( !_strnicmp("all", p, 3) )
+            p += 4;
+
+        code = cm_NameI(cm_rootSCachep, ioctlp->prefix->data,
+                         CM_FLAG_CASEFOLD | CM_FLAG_FOLLOW,
+                         userp, p, reqp, &substRootp);
+        if (code) return code;
         
-        code = cm_NameI(substRootp, ioctlp->inDatap, CM_FLAG_FOLLOW,
-        	userp, NULL, reqp, scpp);
-	if (code) return code;
+        code = cm_NameI(substRootp, ".", CM_FLAG_FOLLOW,
+                         userp, NULL, reqp, scpp);
+        if (code) return code;
+    } else {
+        code = cm_NameI(cm_rootSCachep, ioctlp->prefix->data,
+                         CM_FLAG_CASEFOLD | CM_FLAG_FOLLOW,
+                         userp, ioctlp->tidPathp, reqp, &substRootp);
+        if (code) return code;
         
+        code = cm_NameI(substRootp, relativePath, CM_FLAG_FOLLOW,
+                         userp, NULL, reqp, scpp);
+        if (code) return code;
+    }
+
 	/* # of bytes of path */
-        code = strlen(ioctlp->inDatap) + 1;
-        ioctlp->inDatap += code;
+    code = strlen(ioctlp->inDatap) + 1;
+    ioctlp->inDatap += code;
 
-        /* This is usually nothing, but for StatMountPoint it is the file name. */
-        TranslateExtendedChars(ioctlp->inDatap);
+    /* This is usually nothing, but for StatMountPoint it is the file name. */
+    TranslateExtendedChars(ioctlp->inDatap);
 
 	/* and return success */
-        return 0;
+    return 0;
 }
 
 void cm_SkipIoctlPath(smb_ioctl_t *ioctlp)
diff --git a/src/sys/pioctl_nt.c b/src/sys/pioctl_nt.c
index 499e513ed..8fac4d497 100644
--- a/src/sys/pioctl_nt.c
+++ b/src/sys/pioctl_nt.c
@@ -103,7 +103,7 @@ GetIoctlHandle(char *fileNamep, HANDLE * handlep)
 {
     char *drivep;
     char netbiosName[MAX_NB_NAME_LENGTH];
-    char tbuffer[100];
+    char tbuffer[100]="";
     HANDLE fh;
 
     if (fileNamep) {
@@ -112,10 +112,10 @@ GetIoctlHandle(char *fileNamep, HANDLE * handlep)
             tbuffer[0] = *(drivep - 1);
             tbuffer[1] = ':';
             strcpy(tbuffer + 2, SMB_IOCTL_FILENAME);
-        } else
-            strcpy(tbuffer, SMB_IOCTL_FILENAME);
-    } else {
-        /* No file name specified, use UNC name */
+        }
+	}
+	if (!tbuffer[0]) {
+        /* No file name starting with drive colon specified, use UNC name */
         lana_GetNetbiosName(netbiosName,LANA_NETBIOS_NAME_FULL);
         sprintf(tbuffer,"\\\\%s\\all%s",netbiosName,SMB_IOCTL_FILENAME);
     }
@@ -256,11 +256,16 @@ fs_GetFullPath(char *pathp, char *outPathp, long outSize)
 
     /* now get the absolute path to the current wdir in this drive */
     GetCurrentDirectory(sizeof(tpath), tpath);
-    strcpy(outPathp, tpath + 2);	/* skip drive letter */
+	if (tpath[1] == ':')
+	    strcpy(outPathp, tpath + 2);	/* skip drive letter */
+	else
+		strcpy(outPathp, tpath);		/* copy entire UNC path */
     /* if there is a non-null name after the drive, append it */
     if (*firstp != 0) {
-	strcat(outPathp, "\\");
-	strcat(outPathp, firstp);
+		int len = strlen(outPathp);
+		if (outPathp[len-1] != '\\' && outPathp[len-1] != '/') 
+			strcat(outPathp, "\\");
+		strcat(outPathp, firstp);
     }
 
     /* finally, if necessary, switch back to our home drive letter */
-- 
2.39.5