os2acl.c
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- /* os2acl.c - access to OS/2 (LAN Server) ACLs
- *
- * Author: Kai Uwe Rommel <rommel@ars.de>
- * Created: Mon Aug 08 1994
- *
- * This code is in the public domain.
- */
- /*
- * supported 32-bit compilers:
- * - emx+gcc
- * - IBM C Set++ 2.1 or newer
- * - Watcom C/C++ 10.0 or newer
- *
- * supported 16-bit compilers:
- * - MS C 6.00A
- * - Watcom C/C++ 10.0 or newer
- *
- * supported OS/2 LAN environments:
- * - IBM LAN Server/Requester 3.0, 4.0 and 5.0 (Warp Server)
- * - IBM Peer 1.0 (Warp Connect)
- */
- #ifdef KUR
- static char *rcsid =
- "$Id: os2acl.c,v 1.3 1996/04/03 19:18:27 rommel Exp rommel $";
- static char *rcsrev = "$Revision: 1.3 $";
- #endif
- /*
- * $Log: os2acl.c,v $
- * Revision 1.3 1996/04/03 19:18:27 rommel
- * minor fixes
- *
- * Revision 1.2 1996/03/30 22:03:52 rommel
- * avoid frequent dynamic allocation for every call
- * streamlined code
- *
- * Revision 1.1 1996/03/30 09:35:00 rommel
- * Initial revision
- *
- */
- #include <stdio.h>
- #include <stdlib.h>
- #include <string.h>
- #include <ctype.h>
- #include <malloc.h>
- #define INCL_NOPM
- #define INCL_DOS
- #define INCL_DOSERRORS
- #include <os2.h>
- #include "os2/os2acl.h"
- #define UNLEN 20
- #if defined(__WATCOMC__) && defined(__386__) && !defined(__32BIT__)
- #define __32BIT__
- #endif
- #ifdef __32BIT__
- typedef ULONG U_INT;
- #ifdef __EMX__
- #define PSTR16 _far16ptr
- #define PTR16(x) _emx_32to16(x)
- #else /* other 32-bit */
- #define PSTR16 PCHAR16
- #define PTR16(x) ((PCHAR16)(x))
- #endif
- #else /* 16-bit */
- typedef USHORT U_INT;
- #define PSTR16 PSZ
- #define PTR16(x) (x)
- #endif
- typedef struct access_list
- {
- char acl_ugname[UNLEN+1];
- char acl_pad;
- USHORT acl_access;
- }
- ACCLIST;
- typedef struct access_info
- {
- PSTR16 acc_resource_name;
- USHORT acc_attr;
- USHORT acc_count;
- }
- ACCINFO;
- static ACCINFO *ai;
- static char *path, *data;
- #ifdef __32BIT__
- #ifdef __EMX__
- static USHORT (APIENTRY *_NetAccessGetInfo)(PSZ pszServer, PSZ pszResource,
- USHORT sLevel, PVOID pbBuffer, USHORT cbBuffer, PUSHORT pcbTotalAvail);
- static USHORT (APIENTRY *_NetAccessSetInfo)(PSZ pszServer, PSZ pszResource,
- USHORT sLevel, PVOID pbBuffer, USHORT cbBuffer, USHORT sParmNum);
- static USHORT (APIENTRY *_NetAccessAdd)(PSZ pszServer,
- USHORT sLevel, PVOID pbBuffer, USHORT cbBuffer);
- USHORT NetAccessGetInfo(PSZ pszServer, PSZ pszResource, USHORT sLevel,
- PVOID pbBuffer, USHORT cbBuffer, PUSHORT pcbTotalAvail)
- {
- return (USHORT)
- (_THUNK_PROLOG (4+4+2+4+2+4);
- _THUNK_FLAT (pszServer);
- _THUNK_FLAT (pszResource);
- _THUNK_SHORT (sLevel);
- _THUNK_FLAT (pbBuffer);
- _THUNK_SHORT (cbBuffer);
- _THUNK_FLAT (pcbTotalAvail);
- _THUNK_CALLI (_emx_32to16(_NetAccessGetInfo)));
- }
- USHORT NetAccessSetInfo(PSZ pszServer, PSZ pszResource, USHORT sLevel,
- PVOID pbBuffer, USHORT cbBuffer, USHORT sParmNum)
- {
- return (USHORT)
- (_THUNK_PROLOG (4+4+2+4+2+2);
- _THUNK_FLAT (pszServer);
- _THUNK_FLAT (pszResource);
- _THUNK_SHORT (sLevel);
- _THUNK_FLAT (pbBuffer);
- _THUNK_SHORT (cbBuffer);
- _THUNK_SHORT (sParmNum);
- _THUNK_CALLI (_emx_32to16(_NetAccessSetInfo)));
- }
- USHORT NetAccessAdd(PSZ pszServer, USHORT sLevel,
- PVOID pbBuffer, USHORT cbBuffer)
- {
- return (USHORT)
- (_THUNK_PROLOG (4+2+4+2);
- _THUNK_FLAT (pszServer);
- _THUNK_SHORT (sLevel);
- _THUNK_FLAT (pbBuffer);
- _THUNK_SHORT (cbBuffer);
- _THUNK_CALLI (_emx_32to16(_NetAccessAdd)));
- }
- #else /* other 32-bit */
- APIRET16 (* APIENTRY16 NetAccessGetInfo)(PCHAR16 pszServer, PCHAR16 pszResource,
- USHORT sLevel, PVOID16 pbBuffer, USHORT cbBuffer, PVOID16 pcbTotalAvail);
- APIRET16 (* APIENTRY16 NetAccessSetInfo)(PCHAR16 pszServer, PCHAR16 pszResource,
- USHORT sLevel, PVOID16 pbBuffer, USHORT cbBuffer, USHORT sParmNum);
- APIRET16 (* APIENTRY16 NetAccessAdd)(PCHAR16 pszServer,
- USHORT sLevel, PVOID16 pbBuffer, USHORT cbBuffer);
- #define _NetAccessGetInfo NetAccessGetInfo
- #define _NetAccessSetInfo NetAccessSetInfo
- #define _NetAccessAdd NetAccessAdd
- #if !defined(__IBMC__) || !defined(__TILED__)
- #define _tmalloc malloc
- #define _tfree free
- #endif
- #endif
- #else /* 16-bit */
- USHORT (APIENTRY *NetAccessGetInfo)(PSZ pszServer, PSZ pszResource,
- USHORT sLevel, PVOID pbBuffer, USHORT cbBuffer, PUSHORT pcbTotalAvail);
- USHORT (APIENTRY *NetAccessSetInfo)(PSZ pszServer, PSZ pszResource,
- USHORT sLevel, PVOID pbBuffer, USHORT cbBuffer, USHORT sParmNum);
- USHORT (APIENTRY *NetAccessAdd)(PSZ pszServer,
- USHORT sLevel, PVOID pbBuffer, USHORT cbBuffer);
- #define _NetAccessGetInfo NetAccessGetInfo
- #define _NetAccessSetInfo NetAccessSetInfo
- #define _NetAccessAdd NetAccessAdd
- #define _tmalloc malloc
- #define _tfree free
- #define DosQueryProcAddr(handle, ord, name, funcptr)
- DosGetProcAddr(handle, name, funcptr)
- #define DosQueryCurrentDir DosQCurDir
- #define DosQueryCurrentDisk DosQCurDisk
- #endif
- static BOOL acl_init(void)
- {
- static BOOL initialized, netapi_avail;
- HMODULE netapi;
- char buf[256];
- if (initialized)
- return netapi_avail;
- initialized = TRUE;
- if (DosLoadModule(buf, sizeof(buf), "NETAPI", &netapi))
- return FALSE;
- if (DosQueryProcAddr(netapi, 0, "NETACCESSGETINFO", (PFN *) &_NetAccessGetInfo) ||
- DosQueryProcAddr(netapi, 0, "NETACCESSSETINFO", (PFN *) &_NetAccessSetInfo) ||
- DosQueryProcAddr(netapi, 0, "NETACCESSADD", (PFN *) &_NetAccessAdd))
- return FALSE;
- #if defined(__WATCOMC__) && defined(__386__)
- NetAccessGetInfo = (PVOID) (ULONG) (PVOID16) NetAccessGetInfo;
- NetAccessSetInfo = (PVOID) (ULONG) (PVOID16) NetAccessSetInfo;
- NetAccessAdd = (PVOID) (ULONG) (PVOID16) NetAccessAdd;
- #endif
- if ((path = _tmalloc(CCHMAXPATH)) == NULL)
- return FALSE;
- if ((data = _tmalloc(ACL_BUFFERSIZE)) == NULL)
- return FALSE;
- if ((ai = _tmalloc(sizeof(ACCINFO))) == NULL)
- return -1;
- netapi_avail = TRUE;
- return netapi_avail;
- }
- static void acl_mkpath(char *buffer, const char *source)
- {
- char *ptr;
- static char cwd[CCHMAXPATH];
- static U_INT cwdlen;
- U_INT cdrive;
- ULONG drivemap;
- if (isalpha(source[0]) && source[1] == ':')
- buffer[0] = 0; /* fully qualified names */
- else
- {
- if (cwd[0] == 0)
- {
- DosQueryCurrentDisk(&cdrive, &drivemap);
- cwd[0] = (char)(cdrive + '@');
- cwd[1] = ':';
- cwd[2] = '\';
- cwdlen = sizeof(cwd) - 3;
- DosQueryCurrentDir(0, cwd + 3, &cwdlen);
- cwdlen = strlen(cwd);
- }
- if (source[0] == '/' || source[0] == '\')
- {
- if (source[1] == '/' || source[1] == '\')
- buffer[0] = 0; /* UNC names */
- else
- {
- strncpy(buffer, cwd, 2);
- buffer[2] = 0;
- }
- }
- else
- {
- strcpy(buffer, cwd);
- if (cwd[cwdlen - 1] != '\' && cwd[cwdlen - 1] != '/')
- strcat(buffer, "/");
- }
- }
- strcat(buffer, source);
- for (ptr = buffer; *ptr; ptr++)
- if (*ptr == '/')
- *ptr = '\';
- if (ptr[-1] == '\')
- ptr[-1] = 0;
- strupr(buffer);
- }
- static int acl_bin2text(char *data, char *text)
- {
- ACCINFO *ai;
- ACCLIST *al;
- U_INT cnt, offs;
- ai = (ACCINFO *) data;
- al = (ACCLIST *) (data + sizeof(ACCINFO));
- offs = sprintf(text, "ACL1:%X,%dn",
- ai -> acc_attr, ai -> acc_count);
- for (cnt = 0; cnt < ai -> acc_count; cnt++)
- offs += sprintf(text + offs, "%s,%Xn",
- al[cnt].acl_ugname, al[cnt].acl_access);
- return strlen(text);
- }
- int acl_get(char *server, const char *resource, char *buffer)
- {
- USHORT datalen;
- PSZ srv = NULL;
- int rc;
- if (!acl_init())
- return -1;
- if (server)
- srv = server;
- acl_mkpath(path, resource);
- datalen = 0;
- rc = NetAccessGetInfo(srv, path, 1, data, ACL_BUFFERSIZE, &datalen);
- if (rc == 0)
- acl_bin2text(data, buffer);
- return rc;
- }
- static int acl_text2bin(char *data, char *text, char *path)
- {
- ACCINFO *ai;
- ACCLIST *al;
- char *ptr, *ptr2;
- U_INT cnt;
- ai = (ACCINFO *) data;
- ai -> acc_resource_name = PTR16(path);
- if (sscanf(text, "ACL1:%hX,%hd",
- &ai -> acc_attr, &ai -> acc_count) != 2)
- return ERROR_INVALID_PARAMETER;
- al = (ACCLIST *) (data + sizeof(ACCINFO));
- ptr = strchr(text, 'n') + 1;
- for (cnt = 0; cnt < ai -> acc_count; cnt++)
- {
- ptr2 = strchr(ptr, ',');
- strncpy(al[cnt].acl_ugname, ptr, ptr2 - ptr);
- al[cnt].acl_ugname[ptr2 - ptr] = 0;
- sscanf(ptr2 + 1, "%hx", &al[cnt].acl_access);
- ptr = strchr(ptr, 'n') + 1;
- }
- return sizeof(ACCINFO) + ai -> acc_count * sizeof(ACCLIST);
- }
- int acl_set(char *server, const char *resource, char *buffer)
- {
- USHORT datalen;
- PSZ srv = NULL;
- if (!acl_init())
- return -1;
- if (server)
- srv = server;
- acl_mkpath(path, resource);
- ai -> acc_resource_name = PTR16(path);
- ai -> acc_attr = 0;
- ai -> acc_count = 0;
- NetAccessAdd(srv, 1, ai, sizeof(ACCINFO));
- /* Ignore any errors, most probably because ACL already exists. */
- /* In any such case, try updating the existing ACL. */
- datalen = acl_text2bin(data, buffer, path);
- return NetAccessSetInfo(srv, path, 1, data, datalen, 0);
- }
- /* end of os2acl.c */