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windows-pioctl-subst-unc-20090407

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LICENSE MIT

Add code to support determining if a drive substitution refers to
a UNC path.
This commit is contained in:
Jeffrey Altman 2009-04-06 22:47:49 +00:00
parent aad7a2c585
commit 9a0b3da255
1 changed files with 26 additions and 4 deletions
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30
src/sys/pioctl_nt.c
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@ -402,7 +402,7 @@ GetLSAPrincipalName(char * szUser, DWORD *dwSize)
// dos drive letter to which the source is mapped.
//
static BOOL
DriveSubstitution(char *drivestr, char *subststr)
DriveSubstitution(char *drivestr, char *subststr, size_t substlen)
{
char device[MAX_PATH];
@ -418,7 +418,7 @@ DriveSubstitution(char *drivestr, char *subststr)
device[0] = device[4];
device[1] = ':';
device[2] = '\0';
if ( DriveSubstitution(device, subststr) )
if ( DriveSubstitution(device, subststr, substlen) )
{
return TRUE;
} else {
@ -427,6 +427,20 @@ DriveSubstitution(char *drivestr, char *subststr)
subststr[2] = '\0';
return TRUE;
}
} else
if ( device[0] == '\\' &&
device[1] == '?' &&
device[2] == '?' &&
device[3] == '\\' &&
device[4] == 'U' &&
device[5] == 'N' &&
device[6] == 'C' &&
device[7] == '\\')
{
subststr[0] = '\\';
strncpy(&subststr[1], &device[7], substlen-1);
subststr[substlen-1] = '\0';
return TRUE;
}
}
@ -446,15 +460,23 @@ DriveIsMappedToAFS(char *drivestr, char *NetbiosName)
LPNETRESOURCE lpnrLocal; // pointer to enumerated structures
DWORD i;
BOOL bIsAFS = FALSE;
char subststr[3];
char subststr[MAX_PATH];
//
// Handle drive letter substitution created with "SUBST <drive> <path>".
// If a substitution has occurred, use the target drive letter instead
// of the source.
//
if ( DriveSubstitution(drivestr, subststr) )
if ( DriveSubstitution(drivestr, subststr, MAX_PATH) )
{
if (subststr[0] == '\\' &&
subststr[1] == '\\')
{
if (_strnicmp( &subststr[2], NetbiosName, strlen(NetbiosName)) == 0)
return TRUE;
else
return FALSE;
}
drivestr = subststr;
}