1/*	$NetBSD$	*/
2
3/*
4 * Copyright (c) 2004 by Internet Systems Consortium, Inc. ("ISC")
5 * Portions Copyright (c) 1996 by Internet Software Consortium.
6 *
7 * Permission to use, copy, modify, and distribute this software for any
8 * purpose with or without fee is hereby granted, provided that the above
9 * copyright notice and this permission notice appear in all copies.
10 *
11 * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES
12 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
13 * MERCHANTABILITY AND FITNESS.  IN NO EVENT SHALL ISC BE LIABLE FOR
14 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
15 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
16 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
17 * OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
18 */
19
20#if defined(LIBC_SCCS) && !defined(lint)
21static const char rcsid[] = "Id: irp_pr.c,v 1.3 2005/04/27 04:56:29 sra Exp";
22#endif /* LIBC_SCCS and not lint */
23
24/* extern */
25
26#include "port_before.h"
27
28#include <syslog.h>
29#include <sys/types.h>
30
31#include <errno.h>
32#include <fcntl.h>
33#include <string.h>
34#include <stdio.h>
35#include <stdlib.h>
36#include <netdb.h>
37#include <syslog.h>
38
39#include <irs.h>
40#include <irp.h>
41#include <isc/memcluster.h>
42#include <isc/irpmarshall.h>
43
44#include "irs_p.h"
45#include "lcl_p.h"
46#include "irp_p.h"
47
48#include "port_after.h"
49
50
51#define MAXALIASES	35
52
53/* Types */
54
55struct pvt {
56	struct irp_p	       *girpdata;
57	int			warned;
58	struct protoent		proto;
59};
60
61/* Forward */
62
63static void			pr_close(struct irs_pr *);
64static struct protoent *	pr_next(struct irs_pr *);
65static struct protoent *	pr_byname(struct irs_pr *, const char *);
66static struct protoent *	pr_bynumber(struct irs_pr *, int);
67static void			pr_rewind(struct irs_pr *);
68static void			pr_minimize(struct irs_pr *);
69
70static void			free_proto(struct protoent *pr);
71
72/* Public */
73
74/*%
75 * struct irs_pr * irs_irp_pr(struct irs_acc *this)
76 *
77 */
78
79struct irs_pr *
80irs_irp_pr(struct irs_acc *this) {
81	struct irs_pr *pr;
82	struct pvt *pvt;
83
84	if (!(pr = memget(sizeof *pr))) {
85		errno = ENOMEM;
86		return (NULL);
87	}
88	memset(pr, 0x0, sizeof *pr);
89
90	if (!(pvt = memget(sizeof *pvt))) {
91		memput(pr, sizeof *pr);
92		errno = ENOMEM;
93		return (NULL);
94	}
95	memset(pvt, 0, sizeof *pvt);
96	pvt->girpdata = this->private;
97
98	pr->private = pvt;
99	pr->close = pr_close;
100	pr->byname = pr_byname;
101	pr->bynumber = pr_bynumber;
102	pr->next = pr_next;
103	pr->rewind = pr_rewind;
104	pr->minimize = pr_minimize;
105	return (pr);
106}
107
108/* Methods */
109
110/*%
111 * void pr_close(struct irs_pr *this)
112 *
113 */
114
115static void
116pr_close(struct irs_pr *this) {
117	struct pvt *pvt = (struct pvt *)this->private;
118
119	pr_minimize(this);
120
121	free_proto(&pvt->proto);
122
123	memput(pvt, sizeof *pvt);
124	memput(this, sizeof *this);
125}
126
127/*%
128 * struct protoent * pr_byname(struct irs_pr *this, const char *name)
129 *
130 */
131
132static struct protoent *
133pr_byname(struct irs_pr *this, const char *name) {
134	struct pvt *pvt = (struct pvt *)this->private;
135	struct protoent *pr = &pvt->proto;
136	char *body = NULL;
137	size_t bodylen;
138	int code;
139	int i;
140	char text[256];
141
142	if (pr->p_name != NULL && strcmp(name, pr->p_name) == 0) {
143		return (pr);
144	}
145
146	if (irs_irp_connection_setup(pvt->girpdata, &pvt->warned) != 0) {
147		return (NULL);
148	}
149
150	i = irs_irp_send_command(pvt->girpdata, "getprotobyname %s", name);
151	if (i != 0)
152		return (NULL);
153
154	if (irs_irp_get_full_response(pvt->girpdata, &code,
155				      text, sizeof text,
156				      &body, &bodylen) != 0) {
157		return (NULL);
158	}
159
160	if (code == IRPD_GETPROTO_OK) {
161		free_proto(pr);
162		if (irp_unmarshall_pr(pr, body) != 0) {
163			pr = NULL;
164		}
165	} else {
166		pr = NULL;
167	}
168
169	if (body != NULL) {
170		memput(body, bodylen);
171	}
172
173	return (pr);
174}
175
176/*%
177 * struct protoent * pr_bynumber(struct irs_pr *this, int proto)
178 *
179 */
180
181static struct protoent *
182pr_bynumber(struct irs_pr *this, int proto) {
183	struct pvt *pvt = (struct pvt *)this->private;
184	struct protoent *pr = &pvt->proto;
185	char *body = NULL;
186	size_t bodylen;
187	int code;
188	int i;
189	char text[256];
190
191	if (pr->p_name != NULL && proto == pr->p_proto) {
192		return (pr);
193	}
194
195	if (irs_irp_connection_setup(pvt->girpdata, &pvt->warned) != 0) {
196		return (NULL);
197	}
198
199	i = irs_irp_send_command(pvt->girpdata, "getprotobynumber %d", proto);
200	if (i != 0)
201		return (NULL);
202
203	if (irs_irp_get_full_response(pvt->girpdata, &code,
204				      text, sizeof text,
205				      &body, &bodylen) != 0) {
206		return (NULL);
207	}
208
209	if (code == IRPD_GETPROTO_OK) {
210		free_proto(pr);
211		if (irp_unmarshall_pr(pr, body) != 0) {
212			pr = NULL;
213		}
214	} else {
215		pr = NULL;
216	}
217
218	if (body != NULL) {
219		memput(body, bodylen);
220	}
221
222	return (pr);
223}
224
225/*%
226 * void pr_rewind(struct irs_pr *this)
227 *
228 */
229
230static void
231pr_rewind(struct irs_pr *this) {
232	struct pvt *pvt = (struct pvt *)this->private;
233	char text[256];
234	int code;
235
236	if (irs_irp_connection_setup(pvt->girpdata, &pvt->warned) != 0) {
237		return;
238	}
239
240	if (irs_irp_send_command(pvt->girpdata, "setprotoent") != 0) {
241		return;
242	}
243
244	code = irs_irp_read_response(pvt->girpdata, text, sizeof text);
245	if (code != IRPD_GETPROTO_SETOK) {
246		if (irp_log_errors) {
247			syslog(LOG_WARNING, "setprotoent failed: %s", text);
248		}
249	}
250
251	return;
252}
253
254/*%
255 *	Prepares the cache if necessary and returns the next item in it.
256 *
257 */
258
259static struct protoent *
260pr_next(struct irs_pr *this) {
261	struct pvt *pvt = (struct pvt *)this->private;
262	struct protoent *pr = &pvt->proto;
263	char *body;
264	size_t bodylen;
265	int code;
266	char text[256];
267
268	if (irs_irp_connection_setup(pvt->girpdata, &pvt->warned) != 0) {
269		return (NULL);
270	}
271
272	if (irs_irp_send_command(pvt->girpdata, "getprotoent") != 0) {
273		return (NULL);
274	}
275
276	if (irs_irp_get_full_response(pvt->girpdata, &code,
277				      text, sizeof text,
278				      &body, &bodylen) != 0) {
279		return (NULL);
280	}
281
282	if (code == IRPD_GETPROTO_OK) {
283		free_proto(pr);
284		if (irp_unmarshall_pr(pr, body) != 0) {
285			pr = NULL;
286		}
287	} else {
288		pr = NULL;
289	}
290
291	if (body != NULL) {
292		memput(body, bodylen);
293	}
294
295	return (pr);
296}
297
298/*%
299 * void pr_minimize(struct irs_pr *this)
300 *
301 */
302
303static void
304pr_minimize(struct irs_pr *this) {
305	struct pvt *pvt = (struct pvt *)this->private;
306
307	irs_irp_disconnect(pvt->girpdata);
308}
309
310/*%
311 *	Deallocate all the memory irp_unmarshall_pr allocated.
312 *
313 */
314
315static void
316free_proto(struct protoent *pr) {
317	char **p;
318
319	if (pr == NULL)
320		return;
321
322	if (pr->p_name != NULL)
323		free(pr->p_name);
324
325	for (p = pr->p_aliases ; p != NULL && *p != NULL ; p++)
326		free(*p);
327}
328
329/*! \file */
330