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15637ed4 RG |
1 | /* @(#)getrpcent.c 2.2 88/07/29 4.0 RPCSRC */ |
2 | #if !defined(lint) && defined(SCCSIDS) | |
3 | static char sccsid[] = "@(#)getrpcent.c 1.9 87/08/11 Copyr 1984 Sun Micro"; | |
4 | #endif | |
5 | ||
6 | /* | |
7 | * Sun RPC is a product of Sun Microsystems, Inc. and is provided for | |
8 | * unrestricted use provided that this legend is included on all tape | |
9 | * media and as a part of the software program in whole or part. Users | |
10 | * may copy or modify Sun RPC without charge, but are not authorized | |
11 | * to license or distribute it to anyone else except as part of a product or | |
12 | * program developed by the user. | |
13 | * | |
14 | * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE | |
15 | * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR | |
16 | * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE. | |
17 | * | |
18 | * Sun RPC is provided with no support and without any obligation on the | |
19 | * part of Sun Microsystems, Inc. to assist in its use, correction, | |
20 | * modification or enhancement. | |
21 | * | |
22 | * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE | |
23 | * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC | |
24 | * OR ANY PART THEREOF. | |
25 | * | |
26 | * In no event will Sun Microsystems, Inc. be liable for any lost revenue | |
27 | * or profits or other special, indirect and consequential damages, even if | |
28 | * Sun has been advised of the possibility of such damages. | |
29 | * | |
30 | * Sun Microsystems, Inc. | |
31 | * 2550 Garcia Avenue | |
32 | * Mountain View, California 94043 | |
33 | */ | |
34 | ||
35 | /* | |
36 | * Copyright (c) 1985 by Sun Microsystems, Inc. | |
37 | */ | |
38 | ||
39 | #include <stdio.h> | |
40 | #include <sys/types.h> | |
41 | #include <rpc/rpc.h> | |
42 | #include <netdb.h> | |
43 | #include <sys/socket.h> | |
44 | ||
45 | /* | |
46 | * Internet version. | |
47 | */ | |
48 | struct rpcdata { | |
49 | FILE *rpcf; | |
50 | char *current; | |
51 | int currentlen; | |
52 | int stayopen; | |
53 | #define MAXALIASES 35 | |
54 | char *rpc_aliases[MAXALIASES]; | |
55 | struct rpcent rpc; | |
56 | char line[BUFSIZ+1]; | |
57 | char *domain; | |
58 | } *rpcdata, *_rpcdata(); | |
59 | ||
60 | static struct rpcent *interpret(); | |
61 | struct hostent *gethostent(); | |
62 | char *inet_ntoa(); | |
63 | static char *index(); | |
64 | ||
65 | static char RPCDB[] = "/etc/rpc"; | |
66 | ||
67 | static struct rpcdata * | |
68 | _rpcdata() | |
69 | { | |
70 | register struct rpcdata *d = rpcdata; | |
71 | ||
72 | if (d == 0) { | |
73 | d = (struct rpcdata *)calloc(1, sizeof (struct rpcdata)); | |
74 | rpcdata = d; | |
75 | } | |
76 | return (d); | |
77 | } | |
78 | ||
79 | struct rpcent * | |
80 | getrpcbynumber(number) | |
81 | register int number; | |
82 | { | |
83 | register struct rpcdata *d = _rpcdata(); | |
84 | register struct rpcent *p; | |
85 | int reason; | |
86 | char adrstr[16], *val = NULL; | |
87 | int vallen; | |
88 | ||
89 | if (d == 0) | |
90 | return (0); | |
91 | setrpcent(0); | |
92 | while (p = getrpcent()) { | |
93 | if (p->r_number == number) | |
94 | break; | |
95 | } | |
96 | endrpcent(); | |
97 | return (p); | |
98 | } | |
99 | ||
100 | struct rpcent * | |
101 | getrpcbyname(name) | |
102 | char *name; | |
103 | { | |
104 | struct rpcent *rpc; | |
105 | char **rp; | |
106 | ||
107 | setrpcent(0); | |
108 | while(rpc = getrpcent()) { | |
109 | if (strcmp(rpc->r_name, name) == 0) | |
110 | return (rpc); | |
111 | for (rp = rpc->r_aliases; *rp != NULL; rp++) { | |
112 | if (strcmp(*rp, name) == 0) | |
113 | return (rpc); | |
114 | } | |
115 | } | |
116 | endrpcent(); | |
117 | return (NULL); | |
118 | } | |
119 | ||
120 | setrpcent(f) | |
121 | int f; | |
122 | { | |
123 | register struct rpcdata *d = _rpcdata(); | |
124 | ||
125 | if (d == 0) | |
126 | return; | |
127 | if (d->rpcf == NULL) | |
128 | d->rpcf = fopen(RPCDB, "r"); | |
129 | else | |
130 | rewind(d->rpcf); | |
131 | if (d->current) | |
132 | free(d->current); | |
133 | d->current = NULL; | |
134 | d->stayopen |= f; | |
135 | } | |
136 | ||
137 | endrpcent() | |
138 | { | |
139 | register struct rpcdata *d = _rpcdata(); | |
140 | ||
141 | if (d == 0) | |
142 | return; | |
143 | if (d->current && !d->stayopen) { | |
144 | free(d->current); | |
145 | d->current = NULL; | |
146 | } | |
147 | if (d->rpcf && !d->stayopen) { | |
148 | fclose(d->rpcf); | |
149 | d->rpcf = NULL; | |
150 | } | |
151 | } | |
152 | ||
153 | struct rpcent * | |
154 | getrpcent() | |
155 | { | |
156 | struct rpcent *hp; | |
157 | int reason; | |
158 | char *key = NULL, *val = NULL; | |
159 | int keylen, vallen; | |
160 | register struct rpcdata *d = _rpcdata(); | |
161 | ||
162 | if (d == 0) | |
163 | return(NULL); | |
164 | if (d->rpcf == NULL && (d->rpcf = fopen(RPCDB, "r")) == NULL) | |
165 | return (NULL); | |
166 | if (fgets(d->line, BUFSIZ, d->rpcf) == NULL) | |
167 | return (NULL); | |
168 | return interpret(d->line, strlen(d->line)); | |
169 | } | |
170 | ||
171 | static struct rpcent * | |
172 | interpret(val, len) | |
173 | { | |
174 | register struct rpcdata *d = _rpcdata(); | |
175 | char *p; | |
176 | register char *cp, **q; | |
177 | ||
178 | if (d == 0) | |
179 | return; | |
180 | strncpy(d->line, val, len); | |
181 | p = d->line; | |
182 | d->line[len] = '\n'; | |
183 | if (*p == '#') | |
184 | return (getrpcent()); | |
185 | cp = index(p, '#'); | |
186 | if (cp == NULL) | |
187 | { | |
188 | cp = index(p, '\n'); | |
189 | if (cp == NULL) | |
190 | return (getrpcent()); | |
191 | } | |
192 | *cp = '\0'; | |
193 | cp = index(p, ' '); | |
194 | if (cp == NULL) | |
195 | { | |
196 | cp = index(p, '\t'); | |
197 | if (cp == NULL) | |
198 | return (getrpcent()); | |
199 | } | |
200 | *cp++ = '\0'; | |
201 | /* THIS STUFF IS INTERNET SPECIFIC */ | |
202 | d->rpc.r_name = d->line; | |
203 | while (*cp == ' ' || *cp == '\t') | |
204 | cp++; | |
205 | d->rpc.r_number = atoi(cp); | |
206 | q = d->rpc.r_aliases = d->rpc_aliases; | |
207 | cp = index(p, ' '); | |
208 | if (cp != NULL) | |
209 | *cp++ = '\0'; | |
210 | else | |
211 | { | |
212 | cp = index(p, '\t'); | |
213 | if (cp != NULL) | |
214 | *cp++ = '\0'; | |
215 | } | |
216 | while (cp && *cp) { | |
217 | if (*cp == ' ' || *cp == '\t') { | |
218 | cp++; | |
219 | continue; | |
220 | } | |
221 | if (q < &(d->rpc_aliases[MAXALIASES - 1])) | |
222 | *q++ = cp; | |
223 | cp = index(p, ' '); | |
224 | if (cp != NULL) | |
225 | *cp++ = '\0'; | |
226 | else | |
227 | { | |
228 | cp = index(p, '\t'); | |
229 | if (cp != NULL) | |
230 | *cp++ = '\0'; | |
231 | } | |
232 | } | |
233 | *q = NULL; | |
234 | return (&d->rpc); | |
235 | } |