1/*	$NetBSD: irp_sv.c,v 1.1.1.2 2012/09/09 16:07:57 christos Exp $	*/
2
3/*
4 * Copyright (c) 2004 by Internet Systems Consortium, Inc. ("ISC")
5 * Portions Copyright (c) 1996,1998 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_sv.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#include <sys/socket.h>
31
32#ifdef IRS_LCL_SV_DB
33#include <db.h>
34#endif
35#include <errno.h>
36#include <fcntl.h>
37#include <limits.h>
38#include <stdio.h>
39#include <string.h>
40#include <stdlib.h>
41#include <syslog.h>
42
43#include <irs.h>
44#include <irp.h>
45#include <isc/irpmarshall.h>
46#include <isc/memcluster.h>
47
48#include "irs_p.h"
49#include "lcl_p.h"
50#include "irp_p.h"
51
52#include "port_after.h"
53
54/* Types */
55
56struct pvt {
57	struct irp_p	       *girpdata;
58	int			warned;
59	struct servent		service;
60};
61
62/* Forward */
63
64static void			sv_close(struct irs_sv*);
65static struct servent *		sv_next(struct irs_sv *);
66static struct servent *		sv_byname(struct irs_sv *, const char *,
67					  const char *);
68static struct servent *		sv_byport(struct irs_sv *, int, const char *);
69static void			sv_rewind(struct irs_sv *);
70static void			sv_minimize(struct irs_sv *);
71
72static void			free_service(struct servent *sv);
73
74
75
76/* Public */
77
78/*%
79 * struct irs_sv * irs_irp_sv(struct irs_acc *this)
80 *
81 */
82
83struct irs_sv *
84irs_irp_sv(struct irs_acc *this) {
85	struct irs_sv *sv;
86	struct pvt *pvt;
87
88	if ((sv = memget(sizeof *sv)) == NULL) {
89		errno = ENOMEM;
90		return (NULL);
91	}
92	memset(sv, 0x0, sizeof *sv);
93
94	if ((pvt = memget(sizeof *pvt)) == NULL) {
95		memput(sv, sizeof *sv);
96		errno = ENOMEM;
97		return (NULL);
98	}
99	memset(pvt, 0, sizeof *pvt);
100	pvt->girpdata = this->private;
101
102	sv->private = pvt;
103	sv->close = sv_close;
104	sv->next = sv_next;
105	sv->byname = sv_byname;
106	sv->byport = sv_byport;
107	sv->rewind = sv_rewind;
108	sv->minimize = sv_minimize;
109
110	return (sv);
111}
112
113/* Methods */
114
115/*%
116 * void sv_close(struct irs_sv *this)
117 *
118 */
119
120static void
121sv_close(struct irs_sv *this) {
122	struct pvt *pvt = (struct pvt *)this->private;
123
124	sv_minimize(this);
125
126	free_service(&pvt->service);
127
128	memput(pvt, sizeof *pvt);
129	memput(this, sizeof *this);
130}
131
132/*%
133 *	Fills the cache if necessary and returns the next item from it.
134 *
135 */
136
137static struct servent *
138sv_next(struct irs_sv *this) {
139	struct pvt *pvt = (struct pvt *)this->private;
140	struct servent *sv = &pvt->service;
141	char *body;
142	size_t bodylen;
143	int code;
144	char text[256];
145
146	if (irs_irp_connection_setup(pvt->girpdata, &pvt->warned) != 0) {
147		return (NULL);
148	}
149
150	if (irs_irp_send_command(pvt->girpdata, "getservent") != 0) {
151		return (NULL);
152	}
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_GETSERVICE_OK) {
161		free_service(sv);
162		if (irp_unmarshall_sv(sv, body) != 0) {
163			sv = NULL;
164		}
165	} else {
166		sv = NULL;
167	}
168
169	if (body != NULL) {
170		memput(body, bodylen);
171	}
172
173	return (sv);
174}
175
176/*%
177 * struct servent * sv_byname(struct irs_sv *this, const char *name,
178 *				const char *proto)
179 *
180 */
181
182static struct servent *
183sv_byname(struct irs_sv *this, const char *name, const char *proto) {
184	struct pvt *pvt = (struct pvt *)this->private;
185	struct servent *sv = &pvt->service;
186	char *body;
187	char text[256];
188	size_t bodylen;
189	int code;
190
191	if (sv->s_name != NULL &&
192	    strcmp(name, sv->s_name) == 0 &&
193	    strcasecmp(proto, sv->s_proto) == 0) {
194		return (sv);
195	}
196
197	if (irs_irp_connection_setup(pvt->girpdata, &pvt->warned) != 0) {
198		return (NULL);
199	}
200
201	if (irs_irp_send_command(pvt->girpdata, "getservbyname %s %s",
202				 name, proto) != 0)
203		return (NULL);
204
205	if (irs_irp_get_full_response(pvt->girpdata, &code,
206				      text, sizeof text,
207				      &body, &bodylen) != 0) {
208		return (NULL);
209	}
210
211	if (code == IRPD_GETSERVICE_OK) {
212		free_service(sv);
213		if (irp_unmarshall_sv(sv, body) != 0) {
214			sv = NULL;
215		}
216	} else {
217		sv = NULL;
218	}
219
220	if (body != NULL) {
221		memput(body, bodylen);
222	}
223
224	return (sv);
225}
226
227/*%
228 * struct servent * sv_byport(struct irs_sv *this, int port,
229 *				const char *proto)
230 *
231 */
232
233static struct servent *
234sv_byport(struct irs_sv *this, int port, const char *proto) {
235	struct pvt *pvt = (struct pvt *)this->private;
236	struct servent *sv = &pvt->service;
237	char *body;
238	size_t bodylen;
239	char text[256];
240	int code;
241
242	if (sv->s_name != NULL &&
243	    port == sv->s_port &&
244	    strcasecmp(proto, sv->s_proto) == 0) {
245		return (sv);
246	}
247
248	if (irs_irp_connection_setup(pvt->girpdata, &pvt->warned) != 0) {
249		return (NULL);
250	}
251
252	if (irs_irp_send_command(pvt->girpdata, "getservbyport %d %s",
253				 ntohs((short)port), proto) != 0) {
254		return (NULL);
255	}
256
257	if (irs_irp_get_full_response(pvt->girpdata, &code,
258				      text, sizeof text,
259				      &body, &bodylen) != 0) {
260		return (NULL);
261	}
262
263	if (code == IRPD_GETSERVICE_OK) {
264		free_service(sv);
265		if (irp_unmarshall_sv(sv, body) != 0) {
266			sv = NULL;
267		}
268	} else {
269		sv = NULL;
270	}
271
272	if (body != NULL) {
273		memput(body, bodylen);
274	}
275
276	return (sv);
277}
278
279/*%
280 * void sv_rewind(struct irs_sv *this)
281 *
282 */
283
284static void
285sv_rewind(struct irs_sv *this) {
286	struct pvt *pvt = (struct pvt *)this->private;
287	char text[256];
288	int code;
289
290	if (irs_irp_connection_setup(pvt->girpdata, &pvt->warned) != 0) {
291		return;
292	}
293
294	if (irs_irp_send_command(pvt->girpdata, "setservent") != 0) {
295		return;
296	}
297
298	code = irs_irp_read_response(pvt->girpdata, text, sizeof text);
299	if (code != IRPD_GETSERVICE_SETOK) {
300		if (irp_log_errors) {
301			syslog(LOG_WARNING, "setservent failed: %s", text);
302		}
303	}
304
305	return;
306}
307
308/*%
309 * void sv_minimize(struct irs_sv *this)
310 *
311 */
312
313static void
314sv_minimize(struct irs_sv *this) {
315	struct pvt *pvt = (struct pvt *)this->private;
316
317	irs_irp_disconnect(pvt->girpdata);
318}
319
320
321
322
323
324
325static void
326free_service(struct servent *sv) {
327	char **p;
328
329	if (sv == NULL) {
330		return;
331	}
332
333	if (sv->s_name != NULL) {
334		free(sv->s_name);
335	}
336
337	for (p = sv->s_aliases ; p != NULL && *p != NULL ; p++) {
338		free(*p);
339	}
340
341	if (sv->s_proto != NULL) {
342		free(sv->s_proto);
343	}
344}
345
346
347
348/*! \file */
349