1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
|
/* DNR.c - DNR library for MPW
(c) Copyright 1988 by Apple Computer. All rights reserved
Modifications by Jim Matthews, Dartmouth College, 5/91
FIXME jcm - copied from Authman 1.0.7 release, file not in ftp.seeding.apple.com
FIXME jcm - slight improvments over the version in the KClient 1.1b1 release
FIXME jcm - All rights reserved Apple Computer
*/
#include <OSUtils.h>
#include <Errors.h>
#include <Files.h>
#include <Resources.h>
#include <Memory.h>
#include <Traps.h>
#include <GestaltEqu.h>
#include <Folders.h>
#include <ToolUtils.h>
#define OPENRESOLVER 1L
#define CLOSERESOLVER 2L
#define STRTOADDR 3L
#define ADDRTOSTR 4L
#define ENUMCACHE 5L
#define ADDRTONAME 6L
#define HINFO 7L
#define MXINFO 8L
Handle codeHndl = nil;
typedef OSErr (*OSErrProcPtr)(long,...);
OSErrProcPtr dnr = nil;
TrapType GetTrapType(theTrap)
unsigned long theTrap;
{
if (BitAnd(theTrap, 0x0800) > 0)
return(ToolTrap);
else
return(OSTrap);
}
Boolean TrapAvailable(trap)
unsigned long trap;
{
TrapType trapType = ToolTrap;
unsigned long numToolBoxTraps;
if (NGetTrapAddress(_InitGraf, ToolTrap) == NGetTrapAddress(0xAA6E, ToolTrap))
numToolBoxTraps = 0x200;
else
numToolBoxTraps = 0x400;
trapType = GetTrapType(trap);
if (trapType == ToolTrap) {
trap = BitAnd(trap, 0x07FF);
if (trap >= numToolBoxTraps)
trap = _Unimplemented;
}
return(NGetTrapAddress(trap, trapType) != NGetTrapAddress(_Unimplemented, ToolTrap));
}
void GetSystemFolder(short *vRefNumP, long *dirIDP)
{
SysEnvRec info;
long wdProcID;
SysEnvirons(1, &info);
if (GetWDInfo(info.sysVRefNum, vRefNumP, dirIDP, &wdProcID) != noErr) {
*vRefNumP = 0;
*dirIDP = 0;
}
}
void GetCPanelFolder(short *vRefNumP, long *dirIDP)
{
Boolean hasFolderMgr = false;
long feature;
/*
if (TrapAvailable(_GestaltDispatch)) if (Gestalt(gestaltFindFolderAttr, &feature) == noErr) hasFolderMgr = true;
FIXME jcm - what defines _Gestalt
if (TrapAvailable(_Gestalt))
*/
if (Gestalt(gestaltFindFolderAttr, &feature) == noErr) hasFolderMgr = true;
if (!hasFolderMgr) {
GetSystemFolder(vRefNumP, dirIDP);
return;
}
else {
if (FindFolder(kOnSystemDisk, kControlPanelFolderType, kDontCreateFolder, vRefNumP, dirIDP) != noErr) {
*vRefNumP = 0;
*dirIDP = 0;
}
}
}
/* SearchFolderForDNRP is called to search a folder for files that might
contain the 'dnrp' resource */
short SearchFolderForDNRP(long targetType, long targetCreator, short vRefNum, long dirID)
{
HParamBlockRec fi;
Str255 filename;
short refnum;
fi.fileParam.ioCompletion = nil;
fi.fileParam.ioNamePtr = filename;
fi.fileParam.ioVRefNum = vRefNum;
fi.fileParam.ioDirID = dirID;
fi.fileParam.ioFDirIndex = 1;
while (PBHGetFInfo(&fi, false) == noErr) {
/* scan system folder for driver resource files of specific type & creator */
if (fi.fileParam.ioFlFndrInfo.fdType == targetType &&
fi.fileParam.ioFlFndrInfo.fdCreator == targetCreator) {
/* found the MacTCP driver file? */
refnum = HOpenResFile(vRefNum, dirID, filename, fsRdPerm);
SetResLoad(false);
if (GetIndResource('dnrp', 1) == NULL) {
SetResLoad(true);
CloseResFile(refnum);
}
else {
SetResLoad(true);
return refnum;
}
SetResLoad(true);
}
/* check next file in system folder */
fi.fileParam.ioFDirIndex++;
fi.fileParam.ioDirID = dirID; /* PBHGetFInfo() clobbers ioDirID */
}
return(-1);
}
/* OpenOurRF is called to open the MacTCP driver resources */
short OpenOurRF()
{
short refnum;
short vRefNum;
long dirID;
/* first search Control Panels for MacTCP 1.1 */
GetCPanelFolder(&vRefNum, &dirID);
refnum = SearchFolderForDNRP('cdev', 'ztcp', vRefNum, dirID);
if (refnum != -1) return(refnum);
/* next search System Folder for MacTCP 1.0.x */
GetSystemFolder(&vRefNum, &dirID);
refnum = SearchFolderForDNRP('cdev', 'mtcp', vRefNum, dirID);
if (refnum != -1) return(refnum);
/* finally, search Control Panels for MacTCP 1.0.x */
GetCPanelFolder(&vRefNum, &dirID);
refnum = SearchFolderForDNRP('cdev', 'mtcp', vRefNum, dirID);
if (refnum != -1) return(refnum);
return -1;
}
OSErr OpenResolver(fileName)
char *fileName;
{
short refnum;
OSErr rc;
if (dnr != nil)
/* resolver already loaded in */
return(noErr);
/* open the MacTCP driver to get DNR resources. Search for it based on
creator & type rather than simply file name */
refnum = OpenOurRF();
/* ignore failures since the resource may have been installed in the
System file if running on a Mac 512Ke */
/* load in the DNR resource package */
codeHndl = GetIndResource('dnrp', 1);
if (codeHndl == nil) {
/* can't open DNR */
return(ResError());
}
DetachResource(codeHndl);
if (refnum != -1) {
CloseWD(refnum);
CloseResFile(refnum);
}
/* lock the DNR resource since it cannot be reloated while opened */
HLock(codeHndl);
dnr = (OSErrProcPtr) *codeHndl;
/* call open resolver */
rc = (*dnr)(OPENRESOLVER, fileName);
if (rc != noErr) {
/* problem with open resolver, flush it */
HUnlock(codeHndl);
DisposHandle(codeHndl);
dnr = nil;
}
return(rc);
}
OSErr CloseResolver()
{
if (dnr == nil)
/* resolver not loaded error */
return(notOpenErr);
/* call close resolver */
(void) (*dnr)(CLOSERESOLVER);
/* release the DNR resource package */
HUnlock(codeHndl);
DisposHandle(codeHndl);
dnr = nil;
return(noErr);
}
OSErr StrToAddr(hostName, rtnStruct, resultproc, userDataPtr)
char *hostName;
struct hostInfo *rtnStruct;
long resultproc;
char *userDataPtr;
{
if (dnr == nil)
/* resolver not loaded error */
return(notOpenErr);
return((*dnr)(STRTOADDR, hostName, rtnStruct, resultproc, userDataPtr));
}
OSErr AddrToStr(addr, addrStr)
unsigned long addr;
char *addrStr;
{
if (dnr == nil)
/* resolver not loaded error */
return(notOpenErr);
(*dnr)(ADDRTOSTR, addr, addrStr);
return(noErr);
}
OSErr EnumCache(resultproc, userDataPtr)
long resultproc;
char *userDataPtr;
{
if (dnr == nil)
/* resolver not loaded error */
return(notOpenErr);
return((*dnr)(ENUMCACHE, resultproc, userDataPtr));
}
OSErr AddrToName(addr, rtnStruct, resultproc, userDataPtr)
unsigned long addr;
struct hostInfo *rtnStruct;
long resultproc;
char *userDataPtr;
{
if (dnr == nil)
/* resolver not loaded error */
return(notOpenErr);
return((*dnr)(ADDRTONAME, addr, rtnStruct, resultproc, userDataPtr));
}
extern OSErr HInfo(hostName, returnRecPtr, resultProc, userDataPtr)
char *hostName;
struct returnRec *returnRecPtr;
long resultProc;
char *userDataPtr;
{
if (dnr == nil)
/* resolver not loaded error */
return(notOpenErr);
return((*dnr)(HINFO, hostName, returnRecPtr, resultProc, userDataPtr));
}
extern OSErr MXInfo(hostName, returnRecPtr, resultProc, userDataPtr)
char *hostName;
struct returnRec *returnRecPtr;
long resultProc;
char *userDataPtr;
{
if (dnr == nil)
/* resolver not loaded error */
return(notOpenErr);
return((*dnr)(MXINFO, hostName, returnRecPtr, resultProc, userDataPtr));
}
|
