File: af.c

package info (click to toggle)
lcdproc 0.5.9-3
  • links: PTS, VCS
  • area: main
  • in suites: bullseye, buster, sid
  • size: 5,064 kB
  • sloc: ansic: 59,645; sh: 1,740; perl: 681; makefile: 417
file content (345 lines) | stat: -rw-r--r-- 6,386 bytes parent folder | download
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
/*
 * lib/af.c   This file contains the top-level part of the protocol
 *              support functions module for the NET-2 base distribution.
 *
 * Version:     $Id$
 *
 * Author:      Fred N. van Kempen, <waltje@uwalt.nl.mugnet.org>
 *              Copyright 1993 MicroWalt Corporation
 *
 *              This program is free software; you can redistribute it
 *              and/or  modify it under  the terms of  the GNU General
 *              Public  License as  published  by  the  Free  Software
 *              Foundation;  either  version 2 of the License, or  (at
 *              your option) any later version.
 */
#include <sys/types.h>
#include <sys/socket.h>
#include <stdlib.h>
#include <stdio.h>
#include <errno.h>
#include <ctype.h>
#include <string.h>
#include <unistd.h>
#include "config.h"
#include "net-support.h"
#include "pathnames.h"
#include "intl.h"
#include "util.h"

int flag_unx;
int flag_ipx;
int flag_ax25;
int flag_ddp;
int flag_netrom;
int flag_inet;
int flag_inet6;
int flag_econet;
int flag_x25 = 0;
int flag_ash;


struct aftrans_t {
    char *alias;
    char *name;
    int *flag;
} aftrans[] = {

    {
	"ax25", "ax25", &flag_ax25
    },
    {
	"ip", "inet", &flag_inet
    },
    {
	"ip6", "inet6", &flag_inet6
    },
    {
	"ipx", "ipx", &flag_ipx
    },
    {
	"appletalk", "ddp", &flag_ddp
    },
    {
	"netrom", "netrom", &flag_netrom
    },
    {
	"inet", "inet", &flag_inet
    },
    {
	"inet6", "inet6", &flag_inet6
    },
    {
	"ddp", "ddp", &flag_ddp
    },
    {
	"unix", "unix", &flag_unx
    },
    {
	"tcpip", "inet", &flag_inet
    },
    {
	"econet", "ec", &flag_econet
    },
    {
	"x25", "x25", &flag_x25
    },
    {
        "ash", "ash", &flag_ash
    },
    {
	0, 0, 0
    }
};

char afname[256] = "";

extern struct aftype unspec_aftype;
extern struct aftype unix_aftype;
extern struct aftype inet_aftype;
extern struct aftype inet6_aftype;
extern struct aftype ax25_aftype;
extern struct aftype netrom_aftype;
extern struct aftype ipx_aftype;
extern struct aftype ddp_aftype;
extern struct aftype ec_aftype;
extern struct aftype x25_aftype;
extern struct aftype rose_aftype;
extern struct aftype ash_aftype;

static short sVafinit = 0;

struct aftype *aftypes[] =
{
#if HAVE_AFUNIX
    &unix_aftype,
#endif
#if HAVE_AFINET
    &inet_aftype,
#endif
#if HAVE_AFINET6
    &inet6_aftype,
#endif
#if HAVE_AFAX25
    &ax25_aftype,
#endif
#if HAVE_AFNETROM
    &netrom_aftype,
#endif
#if HAVE_AFROSE
    &rose_aftype,
#endif
#if HAVE_AFIPX
    &ipx_aftype,
#endif
#if HAVE_AFATALK
    &ddp_aftype,
#endif
#if HAVE_AFECONET
    &ec_aftype,
#endif
#if HAVE_AFASH
    &ash_aftype,
#endif
#if HAVE_AFX25
    &x25_aftype,
#endif
    &unspec_aftype,
    NULL
};

void afinit()
{
    unspec_aftype.title = _("UNSPEC");
#if HAVE_AFUNIX
    unix_aftype.title = _("UNIX Domain");
#endif
#if HAVE_AFINET
    inet_aftype.title = _("DARPA Internet");
#endif
#if HAVE_AFINET6
    inet6_aftype.title = _("IPv6");
#endif
#if HAVE_AFAX25
    ax25_aftype.title = _("AMPR AX.25");
#endif
#if HAVE_AFNETROM
    netrom_aftype.title = _("AMPR NET/ROM");
#endif
#if HAVE_AFIPX
    ipx_aftype.title = _("Novell IPX");
#endif
#if HAVE_AFATALK
    ddp_aftype.title = _("Appletalk DDP");
#endif
#if HAVE_AFECONET
    ec_aftype.title = _("Econet");
#endif
#if HAVE_AFX25
    x25_aftype.title = _("CCITT X.25");
#endif
#if HAVE_AFROSE
    rose_aftype.title = _("AMPR ROSE");
#endif
#if HAVE_AFASH
    ash_aftype.title = _("Ash");
#endif
    sVafinit = 1;
}

/* set the default AF list from the program name or a constant value    */
void aftrans_def(char *tool, char *argv0, char *dflt)
{
    char *tmp;
    char *buf;

    strcpy(afname, dflt);

    if (!(tmp = strrchr(argv0, '/')))
	tmp = argv0;		/* no slash?! */
    else
	tmp++;

    if (!(buf = strdup(tmp)))
	return;

    if (strlen(tool) >= strlen(tmp)) {
	free(buf);
	return;
    }
    tmp = buf + (strlen(tmp) - strlen(tool));

    if (strcmp(tmp, tool) != 0) {
	free(buf);
	return;
    }
    *tmp = '\0';
    if ((tmp = strchr(buf, '_')))
	*tmp = '\0';

    afname[0] = '\0';
    if (aftrans_opt(buf))
	strcpy(afname, buf);

    free(buf);
}


/* Check our protocol family table for this family. */
struct aftype *get_aftype(const char *name)
{
    struct aftype **afp;

    if (!sVafinit)
	afinit();

    afp = aftypes;
    while (*afp != NULL) {
	if (!strcmp((*afp)->name, name))
	    return (*afp);
	afp++;
    }
    if (index(name, ','))
	fprintf(stderr, _("Please don't supply more than one address family.\n"));
    return (NULL);
}


/* Check our protocol family table for this family. */
struct aftype *get_afntype(int af)
{
    struct aftype **afp;

    if (!sVafinit)
	afinit();

    afp = aftypes;
    while (*afp != NULL) {
	if ((*afp)->af == af)
	    return (*afp);
	afp++;
    }
    return (NULL);
}

/* Check our protocol family table for this family and return its socket */
int get_socket_for_af(int af)
{
    struct aftype **afp;

    if (!sVafinit)
	afinit();

    afp = aftypes;
    while (*afp != NULL) {
	if ((*afp)->af == af)
	    return (*afp)->fd;
	afp++;
    }
    return -1;
}

int aftrans_opt(const char *arg)
{
    struct aftrans_t *paft;
    char *tmp1, *tmp2;
    char buf[256];

    safe_strncpy(buf, arg, sizeof(buf));

    tmp1 = buf;

    while (tmp1) {

	tmp2 = index(tmp1, ',');

	if (tmp2)
	    *(tmp2++) = '\0';

	paft = aftrans;
	for (paft = aftrans; paft->alias; paft++) {
	    if (strcmp(tmp1, paft->alias))
		continue;
	    if (strlen(paft->name) + strlen(afname) + 1 >= sizeof(afname)) {
		fprintf(stderr, _("Too much address family arguments.\n"));
		return (0);
	    }
	    if (paft->flag)
		(*paft->flag)++;
	    if (afname[0])
		strcat(afname, ",");
	    strcat(afname, paft->name);
	    break;
	}
	if (!paft->alias) {
	    fprintf(stderr, _("Unknown address family `%s'.\n"), tmp1);
	    return (1);
	}
	tmp1 = tmp2;
    }

    return (0);
}

/* type: 0=all, 1=getroute */
void print_aflist(int type) {
    int count = 0;
    char * txt;
    struct aftype **afp;

    if (!sVafinit)
	afinit();

    afp = aftypes;
    while (*afp != NULL) {
	if ((type == 1 && ((*afp)->rprint == NULL)) || ((*afp)->af == 0)) {
		afp++; continue;
	}
	if ((count % 3) == 0) fprintf(stderr,count?"\n    ":"    "); 
        txt = (*afp)->name; if (!txt) txt = "..";
	fprintf(stderr,"%s (%s) ",txt,(*afp)->title);
	count++;
	afp++;
    }
    fprintf(stderr,"\n");
}