Update.
[glibc.git] / inet / ruserpass.c
blobf56931fb4bc14125838e959815110ca8b1a617a4
1 /*
2 * Copyright (c) 1985, 1993, 1994
3 * The Regents of the University of California. All rights reserved.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. All advertising materials mentioning features or use of this software
14 * must display the following acknowledgement:
15 * This product includes software developed by the University of
16 * California, Berkeley and its contributors.
17 * 4. Neither the name of the University nor the names of its contributors
18 * may be used to endorse or promote products derived from this software
19 * without specific prior written permission.
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * SUCH DAMAGE.
34 #ifndef lint
35 static char sccsid[] = "@(#)ruserpass.c 8.3 (Berkeley) 4/2/94";
36 #endif /* not lint */
38 #include <sys/types.h>
39 #include <sys/stat.h>
41 #include <assert.h>
42 #include <ctype.h>
43 #include <err.h>
44 #include <errno.h>
45 #include <stdio.h>
46 #include <stdlib.h>
47 #include <string.h>
48 #include <unistd.h>
50 /* #include "ftp_var.h" */
52 static int token __P((void));
53 static FILE *cfile;
55 #define DEFAULT 1
56 #define LOGIN 2
57 #define PASSWD 3
58 #define ACCOUNT 4
59 #define MACDEF 5
60 #define ID 10
61 #define MACHINE 11
63 static char tokval[100];
65 static struct toktab {
66 const char *tokstr;
67 int tval;
68 } toktab[]= {
69 { "default", DEFAULT },
70 { "login", LOGIN },
71 { "password", PASSWD },
72 { "passwd", PASSWD },
73 { "account", ACCOUNT },
74 { "machine", MACHINE },
75 { "macdef", MACDEF },
76 { NULL, 0 }
81 int
82 ruserpass(host, aname, apass)
83 char *host, **aname, **apass;
85 char *hdir, *buf, *tmp;
86 char myname[1024], *mydomain;
87 int t, i, c, usedefault = 0;
88 struct stat stb;
90 hdir = __secure_getenv("HOME");
91 if (hdir == NULL) {
92 /* If we can't get HOME, fail instead of trying ".",
93 which is no improvement. This really should call
94 getpwuid(getuid()). */
95 /*hdir = ".";*/
96 return -1;
99 buf = alloca (strlen (hdir) + 8);
101 __stpcpy (__stpcpy (buf, hdir), "/.netrc");
102 cfile = fopen(buf, "r");
103 if (cfile == NULL) {
104 if (errno != ENOENT)
105 warn("%s", buf);
106 return (0);
108 if (__gethostname(myname, sizeof(myname)) < 0)
109 myname[0] = '\0';
110 if ((mydomain = strchr(myname, '.')) == NULL)
111 mydomain = "";
112 next:
113 while ((t = token())) switch(t) {
115 case DEFAULT:
116 usedefault = 1;
117 /* FALL THROUGH */
119 case MACHINE:
120 if (!usedefault) {
121 if (token() != ID)
122 continue;
124 * Allow match either for user's input host name
125 * or official hostname. Also allow match of
126 * incompletely-specified host in local domain.
128 if (__strcasecmp(host, tokval) == 0)
129 goto match;
130 /* if (__strcasecmp(hostname, tokval) == 0)
131 goto match;
132 if ((tmp = strchr(hostname, '.')) != NULL &&
133 __strcasecmp(tmp, mydomain) == 0 &&
134 __strncasecmp(hostname, tokval, tmp-hostname) == 0 &&
135 tokval[tmp - hostname] == '\0')
136 goto match; */
137 if ((tmp = strchr(host, '.')) != NULL &&
138 __strcasecmp(tmp, mydomain) == 0 &&
139 __strncasecmp(host, tokval, tmp - host) == 0 &&
140 tokval[tmp - host] == '\0')
141 goto match;
142 continue;
144 match:
145 while ((t = token()) && t != MACHINE && t != DEFAULT) switch(t) {
147 case LOGIN:
148 if (token())
149 if (*aname == 0) {
150 *aname = malloc((unsigned) strlen(tokval) + 1);
151 (void) strcpy(*aname, tokval);
152 } else {
153 if (strcmp(*aname, tokval))
154 goto next;
156 break;
157 case PASSWD:
158 if (strcmp(*aname, "anonymous") &&
159 fstat(fileno(cfile), &stb) >= 0 &&
160 (stb.st_mode & 077) != 0) {
161 warnx(_("Error: .netrc file is readable by others."));
162 warnx(_("Remove password or make file unreadable by others."));
163 goto bad;
165 if (token() && *apass == 0) {
166 *apass = malloc((unsigned) strlen(tokval) + 1);
167 (void) strcpy(*apass, tokval);
169 break;
170 case ACCOUNT:
171 #if 0
172 if (fstat(fileno(cfile), &stb) >= 0
173 && (stb.st_mode & 077) != 0) {
174 warnx("Error: .netrc file is readable by others.");
175 warnx("Remove account or make file unreadable by others.");
176 goto bad;
178 if (token() && *aacct == 0) {
179 *aacct = malloc((unsigned) strlen(tokval) + 1);
180 (void) strcpy(*aacct, tokval);
182 #endif
183 break;
184 case MACDEF:
185 #if 0
186 if (proxy) {
187 (void) fclose(cfile);
188 return (0);
190 while ((c=getc_unlocked(cfile)) != EOF && c == ' '
191 || c == '\t');
192 if (c == EOF || c == '\n') {
193 printf("Missing macdef name argument.\n");
194 goto bad;
196 if (macnum == 16) {
197 printf("Limit of 16 macros have already been defined\n");
198 goto bad;
200 tmp = macros[macnum].mac_name;
201 *tmp++ = c;
202 for (i=0; i < 8 && (c=getc_unlocked(cfile)) != EOF &&
203 !isspace(c); ++i) {
204 *tmp++ = c;
206 if (c == EOF) {
207 printf("Macro definition missing null line terminator.\n");
208 goto bad;
210 *tmp = '\0';
211 if (c != '\n') {
212 while ((c=getc_unlocked(cfile)) != EOF
213 && c != '\n');
215 if (c == EOF) {
216 printf("Macro definition missing null line terminator.\n");
217 goto bad;
219 if (macnum == 0) {
220 macros[macnum].mac_start = macbuf;
222 else {
223 macros[macnum].mac_start = macros[macnum-1].mac_end + 1;
225 tmp = macros[macnum].mac_start;
226 while (tmp != macbuf + 4096) {
227 if ((c=getc_unlocked(cfile)) == EOF) {
228 printf("Macro definition missing null line terminator.\n");
229 goto bad;
231 *tmp = c;
232 if (*tmp == '\n') {
233 if (*(tmp-1) == '\0') {
234 macros[macnum++].mac_end = tmp - 1;
235 break;
237 *tmp = '\0';
239 tmp++;
241 if (tmp == macbuf + 4096) {
242 printf("4K macro buffer exceeded\n");
243 goto bad;
245 #endif
246 break;
247 default:
248 warnx(_("Unknown .netrc keyword %s"), tokval);
249 break;
251 goto done;
253 done:
254 (void) fclose(cfile);
255 return (0);
256 bad:
257 (void) fclose(cfile);
258 return (-1);
261 static int
262 token()
264 char *cp;
265 int c;
266 struct toktab *t;
268 if (feof_unlocked(cfile) || ferror_unlocked(cfile))
269 return (0);
270 while ((c = getc_unlocked(cfile)) != EOF &&
271 (c == '\n' || c == '\t' || c == ' ' || c == ','))
272 continue;
273 if (c == EOF)
274 return (0);
275 cp = tokval;
276 if (c == '"') {
277 while ((c = getc_unlocked(cfile)) != EOF && c != '"') {
278 if (c == '\\')
279 c = getc_unlocked(cfile);
280 *cp++ = c;
282 } else {
283 *cp++ = c;
284 while ((c = getc_unlocked(cfile)) != EOF
285 && c != '\n' && c != '\t' && c != ' ' && c != ',') {
286 if (c == '\\')
287 c = getc_unlocked(cfile);
288 *cp++ = c;
291 *cp = 0;
292 if (tokval[0] == 0)
293 return (0);
294 for (t = toktab; t->tokstr; t++)
295 if (!strcmp(t->tokstr, tokval))
296 return (t->tval);
297 return (ID);