251 lines
6.4 KiB
C
251 lines
6.4 KiB
C
/*
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* Copyright (c) 1985, 1993, 1994
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <ctype.h>
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#include <err.h>
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#include <errno.h>
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#include <netdb.h>
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#include <stdio.h>
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#include <stdio_ext.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include <libintl.h>
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/* #include "ftp_var.h" */
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static int token (void);
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static FILE *cfile;
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#define DEFAULT 1
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#define LOGIN 2
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#define PASSWD 3
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#define ACCOUNT 4
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#define MACDEF 5
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#define ID 10
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#define MACHINE 11
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static char tokval[100];
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static const char tokstr[] =
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{
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#define TOK_DEFAULT_IDX 0
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"default\0"
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#define TOK_LOGIN_IDX (TOK_DEFAULT_IDX + sizeof "default")
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"login\0"
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#define TOK_PASSWORD_IDX (TOK_LOGIN_IDX + sizeof "login")
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"password\0"
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#define TOK_PASSWD_IDX (TOK_PASSWORD_IDX + sizeof "password")
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"passwd\0"
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#define TOK_ACCOUNT_IDX (TOK_PASSWD_IDX + sizeof "passwd")
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"account\0"
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#define TOK_MACHINE_IDX (TOK_ACCOUNT_IDX + sizeof "account")
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"machine\0"
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#define TOK_MACDEF_IDX (TOK_MACHINE_IDX + sizeof "machine")
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"macdef"
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};
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static const struct toktab {
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int tokstr_off;
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int tval;
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} toktab[]= {
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{ TOK_DEFAULT_IDX, DEFAULT },
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{ TOK_LOGIN_IDX, LOGIN },
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{ TOK_PASSWORD_IDX, PASSWD },
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{ TOK_PASSWD_IDX, PASSWD },
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{ TOK_ACCOUNT_IDX, ACCOUNT },
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{ TOK_MACHINE_IDX, MACHINE },
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{ TOK_MACDEF_IDX, MACDEF }
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};
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int
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ruserpass (const char *host, const char **aname, const char **apass)
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{
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char *hdir, *buf, *tmp;
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char myname[1024], *mydomain;
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int t, usedefault = 0;
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struct stat64 stb;
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hdir = __libc_secure_getenv("HOME");
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if (hdir == NULL) {
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/* If we can't get HOME, fail instead of trying ".",
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which is no improvement. This really should call
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getpwuid(getuid()). */
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/*hdir = ".";*/
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return -1;
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}
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buf = alloca (strlen (hdir) + 8);
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__stpcpy (__stpcpy (buf, hdir), "/.netrc");
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cfile = fopen(buf, "rce");
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if (cfile == NULL) {
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if (errno != ENOENT)
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warn("%s", buf);
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return (0);
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}
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/* No threads use this stream. */
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__fsetlocking (cfile, FSETLOCKING_BYCALLER);
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if (__gethostname(myname, sizeof(myname)) < 0)
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myname[0] = '\0';
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mydomain = __strchrnul(myname, '.');
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next:
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while ((t = token())) switch(t) {
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case DEFAULT:
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usedefault = 1;
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/* FALL THROUGH */
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case MACHINE:
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if (!usedefault) {
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if (token() != ID)
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continue;
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/*
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* Allow match either for user's input host name
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* or official hostname. Also allow match of
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* incompletely-specified host in local domain.
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*/
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if (__strcasecmp(host, tokval) == 0)
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goto match;
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/* if (__strcasecmp(hostname, tokval) == 0)
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goto match;
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if ((tmp = strchr(hostname, '.')) != NULL &&
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__strcasecmp(tmp, mydomain) == 0 &&
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__strncasecmp(hostname, tokval, tmp-hostname) == 0 &&
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tokval[tmp - hostname] == '\0')
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goto match; */
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if ((tmp = strchr(host, '.')) != NULL &&
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__strcasecmp(tmp, mydomain) == 0 &&
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__strncasecmp(host, tokval, tmp - host) == 0 &&
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tokval[tmp - host] == '\0')
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goto match;
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continue;
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}
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match:
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while ((t = token()) && t != MACHINE && t != DEFAULT) switch(t) {
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case LOGIN:
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if (token()) {
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if (*aname == 0) {
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char *newp;
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newp = malloc((unsigned) strlen(tokval) + 1);
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if (newp == NULL)
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{
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warnx(_("out of memory"));
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goto bad;
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}
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*aname = strcpy(newp, tokval);
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} else {
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if (strcmp(*aname, tokval))
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goto next;
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}
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}
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break;
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case PASSWD:
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if (strcmp(*aname, "anonymous") &&
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fstat64(fileno(cfile), &stb) >= 0 &&
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(stb.st_mode & 077) != 0) {
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warnx(_("Error: .netrc file is readable by others."));
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warnx(_("Remove password or make file unreadable by others."));
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goto bad;
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}
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if (token() && *apass == 0) {
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char *newp;
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newp = malloc((unsigned) strlen(tokval) + 1);
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if (newp == NULL)
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{
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warnx(_("out of memory"));
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goto bad;
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}
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*apass = strcpy(newp, tokval);
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}
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break;
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case ACCOUNT:
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break;
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case MACDEF:
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break;
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default:
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warnx(_("Unknown .netrc keyword %s"), tokval);
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break;
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}
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goto done;
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}
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done:
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(void) fclose(cfile);
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return (0);
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bad:
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(void) fclose(cfile);
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return (-1);
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}
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libc_hidden_def (ruserpass)
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static int
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token (void)
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{
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char *cp;
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int c;
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int i;
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if (feof_unlocked(cfile) || ferror_unlocked(cfile))
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return (0);
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while ((c = getc_unlocked(cfile)) != EOF &&
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(c == '\n' || c == '\t' || c == ' ' || c == ','))
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continue;
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if (c == EOF)
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return (0);
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cp = tokval;
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if (c == '"') {
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while ((c = getc_unlocked(cfile)) != EOF && c != '"') {
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if (c == '\\')
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c = getc_unlocked(cfile);
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*cp++ = c;
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}
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} else {
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*cp++ = c;
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while ((c = getc_unlocked(cfile)) != EOF
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&& c != '\n' && c != '\t' && c != ' ' && c != ',') {
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if (c == '\\')
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c = getc_unlocked(cfile);
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*cp++ = c;
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}
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}
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*cp = 0;
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if (tokval[0] == 0)
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return (0);
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for (i = 0; i < (int) (sizeof (toktab) / sizeof (toktab[0])); ++i)
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if (!strcmp(&tokstr[toktab[i].tokstr_off], tokval))
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return toktab[i].tval;
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return (ID);
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}
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