Update.
[glibc.git] / inet / ruserpass.c
blobe5b2caf4dcedf2fa8077f45dd7e6937d446234a0
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 * 4. Neither the name of the University nor the names of its contributors
14 * may be used to endorse or promote products derived from this software
15 * without specific prior written permission.
17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
30 #if defined(LIBC_SCCS) && !defined(lint)
31 static char sccsid[] = "@(#)ruserpass.c 8.3 (Berkeley) 4/2/94";
32 #endif /* not lint */
34 #include <sys/types.h>
35 #include <sys/stat.h>
37 #include <ctype.h>
38 #include <err.h>
39 #include <errno.h>
40 #include <netdb.h>
41 #include <stdio.h>
42 #include <stdio_ext.h>
43 #include <stdlib.h>
44 #include <string.h>
45 #include <unistd.h>
46 #include <libintl.h>
48 /* #include "ftp_var.h" */
50 static int token (void);
51 static FILE *cfile;
53 #define DEFAULT 1
54 #define LOGIN 2
55 #define PASSWD 3
56 #define ACCOUNT 4
57 #define MACDEF 5
58 #define ID 10
59 #define MACHINE 11
61 static char tokval[100];
63 static const char tokstr[] =
65 #define TOK_DEFAULT_IDX 0
66 "default\0"
67 #define TOK_LOGIN_IDX (TOK_DEFAULT_IDX + sizeof "default")
68 "login\0"
69 #define TOK_PASSWORD_IDX (TOK_LOGIN_IDX + sizeof "login")
70 "password\0"
71 #define TOK_PASSWD_IDX (TOK_PASSWORD_IDX + sizeof "password")
72 "passwd\0"
73 #define TOK_ACCOUNT_IDX (TOK_PASSWD_IDX + sizeof "passwd")
74 "account\0"
75 #define TOK_MACHINE_IDX (TOK_ACCOUNT_IDX + sizeof "account")
76 "machine\0"
77 #define TOK_MACDEF_IDX (TOK_MACHINE_IDX + sizeof "machine")
78 "macdef"
81 static const struct toktab {
82 int tokstr_off;
83 int tval;
84 } toktab[]= {
85 { TOK_DEFAULT_IDX, DEFAULT },
86 { TOK_LOGIN_IDX, LOGIN },
87 { TOK_PASSWORD_IDX, PASSWD },
88 { TOK_PASSWD_IDX, PASSWD },
89 { TOK_ACCOUNT_IDX, ACCOUNT },
90 { TOK_MACHINE_IDX, MACHINE },
91 { TOK_MACDEF_IDX, MACDEF }
96 int
97 ruserpass(host, aname, apass)
98 const char *host, **aname, **apass;
100 char *hdir, *buf, *tmp;
101 char myname[1024], *mydomain;
102 int t, usedefault = 0;
103 struct stat64 stb;
105 hdir = __secure_getenv("HOME");
106 if (hdir == NULL) {
107 /* If we can't get HOME, fail instead of trying ".",
108 which is no improvement. This really should call
109 getpwuid(getuid()). */
110 /*hdir = ".";*/
111 return -1;
114 buf = alloca (strlen (hdir) + 8);
116 __stpcpy (__stpcpy (buf, hdir), "/.netrc");
117 cfile = fopen(buf, "rc");
118 if (cfile == NULL) {
119 if (errno != ENOENT)
120 warn("%s", buf);
121 return (0);
123 /* No threads use this stream. */
124 __fsetlocking (cfile, FSETLOCKING_BYCALLER);
125 if (__gethostname(myname, sizeof(myname)) < 0)
126 myname[0] = '\0';
127 mydomain = __strchrnul(myname, '.');
128 next:
129 while ((t = token())) switch(t) {
131 case DEFAULT:
132 usedefault = 1;
133 /* FALL THROUGH */
135 case MACHINE:
136 if (!usedefault) {
137 if (token() != ID)
138 continue;
140 * Allow match either for user's input host name
141 * or official hostname. Also allow match of
142 * incompletely-specified host in local domain.
144 if (__strcasecmp(host, tokval) == 0)
145 goto match;
146 /* if (__strcasecmp(hostname, tokval) == 0)
147 goto match;
148 if ((tmp = strchr(hostname, '.')) != NULL &&
149 __strcasecmp(tmp, mydomain) == 0 &&
150 __strncasecmp(hostname, tokval, tmp-hostname) == 0 &&
151 tokval[tmp - hostname] == '\0')
152 goto match; */
153 if ((tmp = strchr(host, '.')) != NULL &&
154 __strcasecmp(tmp, mydomain) == 0 &&
155 __strncasecmp(host, tokval, tmp - host) == 0 &&
156 tokval[tmp - host] == '\0')
157 goto match;
158 continue;
160 match:
161 while ((t = token()) && t != MACHINE && t != DEFAULT) switch(t) {
163 case LOGIN:
164 if (token()) {
165 if (*aname == 0) {
166 char *newp;
167 newp = malloc((unsigned) strlen(tokval) + 1);
168 if (newp == NULL)
170 warnx(_("out of memory"));
171 goto bad;
173 *aname = strcpy(newp, tokval);
174 } else {
175 if (strcmp(*aname, tokval))
176 goto next;
179 break;
180 case PASSWD:
181 if (strcmp(*aname, "anonymous") &&
182 fstat64(fileno(cfile), &stb) >= 0 &&
183 (stb.st_mode & 077) != 0) {
184 warnx(_("Error: .netrc file is readable by others."));
185 warnx(_("Remove password or make file unreadable by others."));
186 goto bad;
188 if (token() && *apass == 0) {
189 char *newp;
190 newp = malloc((unsigned) strlen(tokval) + 1);
191 if (newp == NULL)
193 warnx(_("out of memory"));
194 goto bad;
196 *apass = strcpy(newp, tokval);
198 break;
199 case ACCOUNT:
200 #if 0
201 if (fstat64(fileno(cfile), &stb) >= 0
202 && (stb.st_mode & 077) != 0) {
203 warnx("Error: .netrc file is readable by others.");
204 warnx("Remove account or make file unreadable by others.");
205 goto bad;
207 if (token() && *aacct == 0) {
208 *aacct = malloc((unsigned) strlen(tokval) + 1);
209 (void) strcpy(*aacct, tokval);
211 #endif
212 break;
213 case MACDEF:
214 #if 0
215 if (proxy) {
216 (void) fclose(cfile);
217 return (0);
219 while ((c=getc_unlocked(cfile)) != EOF && c == ' '
220 || c == '\t');
221 if (c == EOF || c == '\n') {
222 printf("Missing macdef name argument.\n");
223 goto bad;
225 if (macnum == 16) {
226 printf("Limit of 16 macros have already been defined\n");
227 goto bad;
229 tmp = macros[macnum].mac_name;
230 *tmp++ = c;
231 for (i=0; i < 8 && (c=getc_unlocked(cfile)) != EOF &&
232 !isspace(c); ++i) {
233 *tmp++ = c;
235 if (c == EOF) {
236 printf("Macro definition missing null line terminator.\n");
237 goto bad;
239 *tmp = '\0';
240 if (c != '\n') {
241 while ((c=getc_unlocked(cfile)) != EOF
242 && c != '\n');
244 if (c == EOF) {
245 printf("Macro definition missing null line terminator.\n");
246 goto bad;
248 if (macnum == 0) {
249 macros[macnum].mac_start = macbuf;
251 else {
252 macros[macnum].mac_start = macros[macnum-1].mac_end + 1;
254 tmp = macros[macnum].mac_start;
255 while (tmp != macbuf + 4096) {
256 if ((c=getc_unlocked(cfile)) == EOF) {
257 printf("Macro definition missing null line terminator.\n");
258 goto bad;
260 *tmp = c;
261 if (*tmp == '\n') {
262 if (*(tmp-1) == '\0') {
263 macros[macnum++].mac_end = tmp - 1;
264 break;
266 *tmp = '\0';
268 tmp++;
270 if (tmp == macbuf + 4096) {
271 printf("4K macro buffer exceeded\n");
272 goto bad;
274 #endif
275 break;
276 default:
277 warnx(_("Unknown .netrc keyword %s"), tokval);
278 break;
280 goto done;
282 done:
283 (void) fclose(cfile);
284 return (0);
285 bad:
286 (void) fclose(cfile);
287 return (-1);
289 libc_hidden_def (ruserpass)
291 static int
292 token()
294 char *cp;
295 int c;
296 int i;
298 if (feof_unlocked(cfile) || ferror_unlocked(cfile))
299 return (0);
300 while ((c = getc_unlocked(cfile)) != EOF &&
301 (c == '\n' || c == '\t' || c == ' ' || c == ','))
302 continue;
303 if (c == EOF)
304 return (0);
305 cp = tokval;
306 if (c == '"') {
307 while ((c = getc_unlocked(cfile)) != EOF && c != '"') {
308 if (c == '\\')
309 c = getc_unlocked(cfile);
310 *cp++ = c;
312 } else {
313 *cp++ = c;
314 while ((c = getc_unlocked(cfile)) != EOF
315 && c != '\n' && c != '\t' && c != ' ' && c != ',') {
316 if (c == '\\')
317 c = getc_unlocked(cfile);
318 *cp++ = c;
321 *cp = 0;
322 if (tokval[0] == 0)
323 return (0);
324 for (i = 0; i < (int) (sizeof (toktab) / sizeof (toktab[0])); ++i)
325 if (!strcmp(&tokstr[toktab[i].tokstr_off], tokval))
326 return toktab[i].tval;
327 return (ID);