inet/ruserpass.c - nest-cam/v350/glibc - Git at Google

 /*
  * 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.
  */

 #if defined(LIBC_SCCS) && !defined(lint)
 static char sccsid[] = "@(#)ruserpass.c	8.3 (Berkeley) 4/2/94";
 #endif /* not lint */

 #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(host, aname, apass)
 	const char *host, **aname, **apass;
 {
 	char *hdir, *buf, *tmp;
 	char myname[1024], *mydomain;
 	int t, usedefault = 0;
 	struct stat64 stb;

 	hdir = __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, "rc");
 	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(fileno(cfile), &stb) >= 0 &&
 			    (stb.st_mode & 077) != 0) {
 	warnx(_("Error: .netrc file is readable by others."));
 	warnx(_("Remove password 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:
 #if 0
 			if (fstat64(fileno(cfile), &stb) >= 0
 			    && (stb.st_mode & 077) != 0) {
 	warnx("Error: .netrc file is readable by others.");
 	warnx("Remove account or make file unreadable by others.");
 				goto bad;
 			}
 			if (token() && *aacct == 0) {
 				*aacct = malloc((unsigned) strlen(tokval) + 1);
 				(void) strcpy(*aacct, tokval);
 			}
 #endif
 			break;
 		case MACDEF:
 #if 0
 			if (proxy) {
 				(void) fclose(cfile);
 				return (0);
 			}
 			while ((c=getc_unlocked(cfile)) != EOF && c == ' '
 			       || c == '\t');
 			if (c == EOF || c == '\n') {
 				printf("Missing macdef name argument.\n");
 				goto bad;
 			}
 			if (macnum == 16) {
 				printf("Limit of 16 macros have already been defined\n");
 				goto bad;
 			}
 			tmp = macros[macnum].mac_name;
 			*tmp++ = c;
 			for (i=0; i < 8 && (c=getc_unlocked(cfile)) != EOF &&
 			    !isspace(c); ++i) {
 				*tmp++ = c;
 			}
 			if (c == EOF) {
 				printf("Macro definition missing null line terminator.\n");
 				goto bad;
 			}
 			*tmp = '\0';
 			if (c != '\n') {
 				while ((c=getc_unlocked(cfile)) != EOF
 				       && c != '\n');
 			}
 			if (c == EOF) {
 				printf("Macro definition missing null line terminator.\n");
 				goto bad;
 			}
 			if (macnum == 0) {
 				macros[macnum].mac_start = macbuf;
 			}
 			else {
 				macros[macnum].mac_start = macros[macnum-1].mac_end + 1;
 			}
 			tmp = macros[macnum].mac_start;
 			while (tmp != macbuf + 4096) {
 				if ((c=getc_unlocked(cfile)) == EOF) {
 				printf("Macro definition missing null line terminator.\n");
 					goto bad;
 				}
 				*tmp = c;
 				if (*tmp == '\n') {
 					if (*(tmp-1) == '\0') {
 					   macros[macnum++].mac_end = tmp - 1;
 					   break;
 					}
 					*tmp = '\0';
 				}
 				tmp++;
 			}
 			if (tmp == macbuf + 4096) {
 				printf("4K macro buffer exceeded\n");
 				goto bad;
 			}
 #endif
 			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()
 {
 	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);
 }
	/*
	* 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.
	*/

	#if defined(LIBC_SCCS) && !defined(lint)
	static char sccsid[] = "@(#)ruserpass.c 8.3 (Berkeley) 4/2/94";
	#endif /* not lint */

	#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(host, aname, apass)
	const char host, aname, *apass;
	{
	char hdir, buf, *tmp;
	char myname[1024], *mydomain;
	int t, usedefault = 0;
	struct stat64 stb;

	hdir = __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, "rc");
	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(fileno(cfile), &stb) >= 0 &&
	(stb.st_mode & 077) != 0) {
	warnx(_("Error: .netrc file is readable by others."));
	warnx(_("Remove password 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:
	#if 0
	if (fstat64(fileno(cfile), &stb) >= 0
	&& (stb.st_mode & 077) != 0) {
	warnx("Error: .netrc file is readable by others.");
	warnx("Remove account or make file unreadable by others.");
	goto bad;
	}
	if (token() && *aacct == 0) {
	*aacct = malloc((unsigned) strlen(tokval) + 1);
	(void) strcpy(*aacct, tokval);
	}
	#endif
	break;
	case MACDEF:
	#if 0
	if (proxy) {
	(void) fclose(cfile);
	return (0);
	}
	while ((c=getc_unlocked(cfile)) != EOF && c == ' '
	\|\| c == '\t');
	if (c == EOF \|\| c == '\n') {
	printf("Missing macdef name argument.\n");
	goto bad;
	}
	if (macnum == 16) {
	printf("Limit of 16 macros have already been defined\n");
	goto bad;
	}
	tmp = macros[macnum].mac_name;
	*tmp++ = c;
	for (i=0; i < 8 && (c=getc_unlocked(cfile)) != EOF &&
	!isspace(c); ++i) {
	*tmp++ = c;
	}
	if (c == EOF) {
	printf("Macro definition missing null line terminator.\n");
	goto bad;
	}
	*tmp = '\0';
	if (c != '\n') {
	while ((c=getc_unlocked(cfile)) != EOF
	&& c != '\n');
	}
	if (c == EOF) {
	printf("Macro definition missing null line terminator.\n");
	goto bad;
	}
	if (macnum == 0) {
	macros[macnum].mac_start = macbuf;
	}
	else {
	macros[macnum].mac_start = macros[macnum-1].mac_end + 1;
	}
	tmp = macros[macnum].mac_start;
	while (tmp != macbuf + 4096) {
	if ((c=getc_unlocked(cfile)) == EOF) {
	printf("Macro definition missing null line terminator.\n");
	goto bad;
	}
	*tmp = c;
	if (*tmp == '\n') {
	if (*(tmp-1) == '\0') {
	macros[macnum++].mac_end = tmp - 1;
	break;
	}
	*tmp = '\0';
	}
	tmp++;
	}
	if (tmp == macbuf + 4096) {
	printf("4K macro buffer exceeded\n");
	goto bad;
	}
	#endif
	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()
	{
	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);
	}