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)
21 static 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
56 struct pvt {
57 struct irp_p *girpdata;
58 int warned;
59 struct servent service;
60 };
61
62 /* Forward */
63
64 static void sv_close(struct irs_sv*);
65 static struct servent * sv_next(struct irs_sv *);
66 static struct servent * sv_byname(struct irs_sv *, const char *,
67 const char *);
68 static struct servent * sv_byport(struct irs_sv *, int, const char *);
69 static void sv_rewind(struct irs_sv *);
70 static void sv_minimize(struct irs_sv *);
71
72 static 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
83 struct irs_sv *
irs_irp_sv(struct irs_acc * this)84 irs_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
120 static void
sv_close(struct irs_sv * this)121 sv_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
137 static struct servent *
sv_next(struct irs_sv * this)138 sv_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
182 static struct servent *
sv_byname(struct irs_sv * this,const char * name,const char * proto)183 sv_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
233 static struct servent *
sv_byport(struct irs_sv * this,int port,const char * proto)234 sv_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
284 static void
sv_rewind(struct irs_sv * this)285 sv_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
313 static void
sv_minimize(struct irs_sv * this)314 sv_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
325 static void
free_service(struct servent * sv)326 free_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