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/*
* Copyright (c) 1985, 1993, 1994
* The Regents of the University of California. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <sys/types.h>
#include <sys/stat.h>
#include <ctype.h>
#include <err.h>
#include <errno.h>
#include <netdb.h>
#include <stdio.h>
#include <stdio_ext.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <libintl.h>
/* #include "ftp_var.h" */
static int token (void);
static FILE *cfile;
#define DEFAULT 1
#define LOGIN 2
#define PASSWD 3
#define ACCOUNT 4
#define MACDEF 5
#define ID 10
#define MACHINE 11
static char tokval[100];
static const char tokstr[] =
{
#define TOK_DEFAULT_IDX 0
"default\0"
#define TOK_LOGIN_IDX (TOK_DEFAULT_IDX + sizeof "default")
"login\0"
#define TOK_PASSWORD_IDX (TOK_LOGIN_IDX + sizeof "login")
"password\0"
#define TOK_PASSWD_IDX (TOK_PASSWORD_IDX + sizeof "password")
"passwd\0"
#define TOK_ACCOUNT_IDX (TOK_PASSWD_IDX + sizeof "passwd")
"account\0"
#define TOK_MACHINE_IDX (TOK_ACCOUNT_IDX + sizeof "account")
"machine\0"
#define TOK_MACDEF_IDX (TOK_MACHINE_IDX + sizeof "machine")
"macdef"
};
static const struct toktab {
int tokstr_off;
int tval;
} toktab[]= {
{ TOK_DEFAULT_IDX, DEFAULT },
{ TOK_LOGIN_IDX, LOGIN },
{ TOK_PASSWORD_IDX, PASSWD },
{ TOK_PASSWD_IDX, PASSWD },
{ TOK_ACCOUNT_IDX, ACCOUNT },
{ TOK_MACHINE_IDX, MACHINE },
{ TOK_MACDEF_IDX, MACDEF }
};
int
ruserpass (const char *host, const char **aname, const char **apass)
{
char *hdir, *buf, *tmp;
char myname[1024], *mydomain;
int t, usedefault = 0;
struct __stat64_t64 stb;
hdir = __libc_secure_getenv("HOME");
if (hdir == NULL) {
/* If we can't get HOME, fail instead of trying ".",
which is no improvement. This really should call
getpwuid(getuid()). */
/*hdir = ".";*/
return -1;
}
buf = alloca (strlen (hdir) + 8);
__stpcpy (__stpcpy (buf, hdir), "/.netrc");
cfile = fopen(buf, "rce");
if (cfile == NULL) {
if (errno != ENOENT)
warn("%s", buf);
return (0);
}
/* No threads use this stream. */
__fsetlocking (cfile, FSETLOCKING_BYCALLER);
if (__gethostname(myname, sizeof(myname)) < 0)
myname[0] = '\0';
mydomain = __strchrnul(myname, '.');
next:
while ((t = token())) switch(t) {
case DEFAULT:
usedefault = 1;
/* FALL THROUGH */
case MACHINE:
if (!usedefault) {
if (token() != ID)
continue;
/*
* Allow match either for user's input host name
* or official hostname. Also allow match of
* incompletely-specified host in local domain.
*/
if (__strcasecmp(host, tokval) == 0)
goto match;
/* if (__strcasecmp(hostname, tokval) == 0)
goto match;
if ((tmp = strchr(hostname, '.')) != NULL &&
__strcasecmp(tmp, mydomain) == 0 &&
__strncasecmp(hostname, tokval, tmp-hostname) == 0 &&
tokval[tmp - hostname] == '\0')
goto match; */
if ((tmp = strchr(host, '.')) != NULL &&
__strcasecmp(tmp, mydomain) == 0 &&
__strncasecmp(host, tokval, tmp - host) == 0 &&
tokval[tmp - host] == '\0')
goto match;
continue;
}
match:
while ((t = token()) && t != MACHINE && t != DEFAULT) switch(t) {
case LOGIN:
if (token()) {
if (*aname == 0) {
char *newp;
newp = malloc((unsigned) strlen(tokval) + 1);
if (newp == NULL)
{
warnx(_("out of memory"));
goto bad;
}
*aname = strcpy(newp, tokval);
} else {
if (strcmp(*aname, tokval))
goto next;
}
}
break;
case PASSWD:
if (strcmp(*aname, "anonymous") &&
__fstat64_time64(fileno(cfile), &stb) >= 0 &&
(stb.st_mode & 077) != 0) {
warnx(_("Error: .netrc file is readable by others."));
warnx(_("Remove 'password' line or make file unreadable by others."));
goto bad;
}
if (token() && *apass == 0) {
char *newp;
newp = malloc((unsigned) strlen(tokval) + 1);
if (newp == NULL)
{
warnx(_("out of memory"));
goto bad;
}
*apass = strcpy(newp, tokval);
}
break;
case ACCOUNT:
break;
case MACDEF:
break;
default:
warnx(_("Unknown .netrc keyword %s"), tokval);
break;
}
goto done;
}
done:
(void) fclose(cfile);
return (0);
bad:
(void) fclose(cfile);
return (-1);
}
libc_hidden_def (ruserpass)
static int
token (void)
{
char *cp;
int c;
int i;
if (feof_unlocked(cfile) || ferror_unlocked(cfile))
return (0);
while ((c = getc_unlocked(cfile)) != EOF &&
(c == '\n' || c == '\t' || c == ' ' || c == ','))
continue;
if (c == EOF)
return (0);
cp = tokval;
if (c == '"') {
while ((c = getc_unlocked(cfile)) != EOF && c != '"') {
if (c == '\\')
c = getc_unlocked(cfile);
*cp++ = c;
}
} else {
*cp++ = c;
while ((c = getc_unlocked(cfile)) != EOF
&& c != '\n' && c != '\t' && c != ' ' && c != ',') {
if (c == '\\')
c = getc_unlocked(cfile);
*cp++ = c;
}
}
*cp = 0;
if (tokval[0] == 0)
return (0);
for (i = 0; i < (int) (sizeof (toktab) / sizeof (toktab[0])); ++i)
if (!strcmp(&tokstr[toktab[i].tokstr_off], tokval))
return toktab[i].tval;
return (ID);
}
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