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
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
|
/* $OpenBSD: req.c,v 1.8 2004/12/19 17:32:55 jfb Exp $ */
/*
* Copyright (c) 2004 Jean-Francois Brousseau <jfb@openbsd.org>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
* AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
* THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <stdio.h>
#include <errno.h>
#include <stdlib.h>
#include <unistd.h>
#include <signal.h>
#include <string.h>
#include <sysexits.h>
#ifdef CVS_ZLIB
#include <zlib.h>
#endif
#include "buf.h"
#include "cvs.h"
#include "log.h"
#include "file.h"
#include "proto.h"
extern int verbosity;
extern int cvs_compress;
extern char *cvs_rsh;
extern int cvs_trace;
extern int cvs_nolog;
extern int cvs_readonly;
static int cvs_req_root (int, char *);
static int cvs_req_validreq (int, char *);
static int cvs_req_validresp (int, char *);
static int cvs_req_directory (int, char *);
static int cvs_req_case (int, char *);
static int cvs_req_argument (int, char *);
static int cvs_req_globalopt (int, char *);
static int cvs_req_gzipstream (int, char *);
static int cvs_req_version (int, char *);
struct cvs_reqhdlr {
int (*hdlr)(int, char *);
} cvs_req_swtab[CVS_REQ_MAX + 1] = {
{ NULL },
{ cvs_req_root },
{ cvs_req_validreq },
{ cvs_req_validresp },
{ cvs_req_directory },
{ NULL },
{ NULL },
{ NULL },
{ NULL },
{ NULL },
{ NULL }, /* 10 */
{ NULL },
{ NULL },
{ NULL },
{ NULL },
{ NULL },
{ NULL },
{ NULL },
{ cvs_req_case },
{ NULL },
{ cvs_req_argument }, /* 20 */
{ cvs_req_argument },
{ cvs_req_globalopt },
{ cvs_req_gzipstream },
{ NULL },
{ NULL },
{ NULL },
{ NULL },
{ NULL },
{ NULL },
{ NULL }, /* 30 */
{ NULL },
{ NULL },
{ NULL },
{ NULL },
{ NULL },
{ NULL },
{ NULL },
{ NULL },
{ NULL },
{ NULL }, /* 40 */
{ NULL },
{ NULL },
{ NULL },
{ NULL },
{ NULL },
{ NULL },
{ NULL },
{ NULL },
{ NULL },
{ NULL }, /* 50 */
{ NULL },
{ NULL },
{ NULL },
{ NULL },
{ NULL },
{ NULL },
{ NULL },
{ NULL },
{ NULL },
{ NULL }, /* 60 */
{ NULL },
{ NULL },
{ NULL },
{ NULL },
{ NULL },
{ NULL },
{ NULL },
{ NULL },
{ cvs_req_version },
};
/*
* Argument array built by `Argument' and `Argumentx' requests.
*/
static char *cvs_req_args[CVS_PROTO_MAXARG];
static int cvs_req_nargs = 0;
/*
* cvs_req_handle()
*
* Generic request handler dispatcher. The handler expects the first line
* of the command as single argument.
* Returns the return value of the command on success, or -1 on failure.
*/
int
cvs_req_handle(char *line)
{
char *cp, *cmd;
struct cvs_req *req;
cmd = line;
cp = strchr(cmd, ' ');
if (cp != NULL)
*(cp++) = '\0';
req = cvs_req_getbyname(cmd);
if (req == NULL)
return (-1);
else if (cvs_req_swtab[req->req_id].hdlr == NULL) {
cvs_log(LP_ERRNO, "handler for `%s' not implemented", cmd);
return (-1);
}
return (*cvs_req_swtab[req->req_id].hdlr)(req->req_id, cp);
}
static int
cvs_req_root(int reqid, char *line)
{
return (0);
}
static int
cvs_req_validreq(int reqid, char *line)
{
char *vreq;
vreq = cvs_req_getvalid();
if (vreq == NULL)
return (-1);
cvs_sendresp(CVS_RESP_VALIDREQ, vreq);
return (0);
}
static int
cvs_req_validresp(int reqid, char *line)
{
char *sp, *ep;
struct cvs_resp *resp;
sp = line;
do {
ep = strchr(sp, ' ');
if (ep != NULL)
*(ep++) = '\0';
resp = cvs_resp_getbyname(sp);
if (resp != NULL)
;
if (ep != NULL)
sp = ep + 1;
} while (ep != NULL);
return (0);
}
static int
cvs_req_directory(int reqid, char *line)
{
return (0);
}
/*
* cvs_req_case()
*
* Handler for the `Case' requests, which toggles case sensitivity ON or OFF
*/
static int
cvs_req_case(int reqid, char *line)
{
cvs_nocase = 1;
return (0);
}
static int
cvs_req_argument(int reqid, char *line)
{
char *nap;
if (cvs_req_nargs == CVS_PROTO_MAXARG) {
cvs_log(LP_ERR, "too many arguments");
return (-1);
}
if (reqid == CVS_REQ_ARGUMENT) {
cvs_req_args[cvs_req_nargs] = strdup(line);
if (cvs_req_args[cvs_req_nargs] == NULL) {
cvs_log(LP_ERRNO, "failed to copy argument");
return (-1);
}
cvs_req_nargs++;
} else if (reqid == CVS_REQ_ARGUMENTX) {
if (cvs_req_nargs == 0)
cvs_log(LP_WARN, "no argument to append to");
else {
asprintf(&nap, "%s%s", cvs_req_args[cvs_req_nargs - 1],
line);
if (nap == NULL) {
cvs_log(LP_ERRNO,
"failed to append to argument");
return (-1);
}
free(cvs_req_args[cvs_req_nargs - 1]);
cvs_req_args[cvs_req_nargs - 1] = nap;
}
}
return (0);
}
static int
cvs_req_globalopt(int reqid, char *line)
{
if ((*line != '-') || (*(line + 2) != '\0')) {
cvs_log(LP_ERR,
"invalid `Global_option' request format");
return (-1);
}
switch (*(line + 1)) {
case 'l':
cvs_nolog = 1;
break;
case 'n':
break;
case 'Q':
verbosity = 0;
break;
case 'q':
if (verbosity > 1)
verbosity = 1;
break;
case 'r':
cvs_readonly = 1;
break;
case 't':
cvs_trace = 1;
break;
default:
cvs_log(LP_ERR, "unknown global option `%s'", line);
return (-1);
}
return (0);
}
/*
* cvs_req_gzipstream()
*
* Handler for the `Gzip-stream' request, which enables compression at the
* level given along with the request. After this request has been processed,
* all further connection data should be compressed.
*/
static int
cvs_req_gzipstream(int reqid, char *line)
{
char *ep;
long val;
val = strtol(line, &ep, 10);
if ((line[0] == '\0') || (*ep != '\0')) {
cvs_log(LP_ERR, "invalid Gzip-stream level `%s'", line);
return (-1);
} else if ((errno == ERANGE) && ((val < 0) || (val > 9))) {
cvs_log(LP_ERR, "Gzip-stream level %ld out of range", val);
return (-1);
}
cvs_compress = (int)val;
return (0);
}
static int
cvs_req_version(int reqid, char *line)
{
cvs_printf("%s\n", CVS_VERSION);
return (0);
}
|
