[thirdparty/glibc.git] / inet / ruserpass.c

/*
 * 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 <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <libintl.h>

/* #include "ftp_var.h" */

static	int token __P((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)
	char *host, **aname, **apass;
{
	char *hdir, *buf, *tmp;
	char myname[1024], *mydomain;
	int t, i, c, usedefault = 0;
	struct stat 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, "r");
	if (cfile == NULL) {
		if (errno != ENOENT)
			warn("%s", buf);
		return (0);
	}
	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) {
					*aname = malloc((unsigned) strlen(tokval) + 1);
					(void) strcpy(*aname, tokval);
				} else {
					if (strcmp(*aname, tokval))
						goto next;
				}
			break;
		case PASSWD:
			if (strcmp(*aname, "anonymous") &&
			    fstat(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) {
				*apass = malloc((unsigned) strlen(tokval) + 1);
				(void) strcpy(*apass, tokval);
			}
			break;
		case ACCOUNT:
#if 0
			if (fstat(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);
}

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 < sizeof (toktab) / sizeof (toktab[0]); ++i)
		if (!strcmp(&tokstr[toktab[i].tokstr_off], tokval))
			return toktab[i].tval;
	return (ID);
}
Commit	Line	Data
49633efb RM	1	/*
	2	* Copyright (c) 1985, 1993, 1994
	3	* The Regents of the University of California. All rights reserved.
	4	*
	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.
49633efb RM	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.
	16	*
	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.
	28	*/
	29
390500b1	30	#if defined(LIBC_SCCS) && !defined(lint)
49633efb RM	31	static char sccsid[] = "@(#)ruserpass.c 8.3 (Berkeley) 4/2/94";
	32	#endif /* not lint */
	33
	34	#include <sys/types.h>
	35	#include <sys/stat.h>
	36
	37	#include <ctype.h>
2de99474	38	#include <err.h>
49633efb RM	39	#include <errno.h>
	40	#include <stdio.h>
	41	#include <stdlib.h>
	42	#include <string.h>
	43	#include <unistd.h>
4360eafd	44	#include <libintl.h>
49633efb RM	45
	46	/* #include "ftp_var.h" */
	47
	48	static int token __P((void));
	49	static FILE *cfile;
	50
	51	#define DEFAULT 1
	52	#define LOGIN 2
	53	#define PASSWD 3
	54	#define ACCOUNT 4
	55	#define MACDEF 5
	56	#define ID 10
	57	#define MACHINE 11
	58
	59	static char tokval[100];
	60
390500b1 UD	61	static const char tokstr[] =
	62	{
	63	#define TOK_DEFAULT_IDX 0
	64	"default\0"
	65	#define TOK_LOGIN_IDX (TOK_DEFAULT_IDX + sizeof "default")
	66	"login\0"
	67	#define TOK_PASSWORD_IDX (TOK_LOGIN_IDX + sizeof "login")
	68	"password\0"
	69	#define TOK_PASSWD_IDX (TOK_PASSWORD_IDX + sizeof "password")
	70	"passwd\0"
	71	#define TOK_ACCOUNT_IDX (TOK_PASSWD_IDX + sizeof "passwd")
	72	"account\0"
	73	#define TOK_MACHINE_IDX (TOK_ACCOUNT_IDX + sizeof "account")
	74	"machine\0"
	75	#define TOK_MACDEF_IDX (TOK_MACHINE_IDX + sizeof "machine")
	76	"macdef"
	77	};
	78
	79	static const struct toktab {
	80	int tokstr_off;
49633efb RM	81	int tval;
49633efb RM	82	} toktab[]= {
390500b1 UD	83	{ TOK_DEFAULT_IDX, DEFAULT },
	84	{ TOK_LOGIN_IDX, LOGIN },
	85	{ TOK_PASSWORD_IDX, PASSWD },
	86	{ TOK_PASSWD_IDX, PASSWD },
	87	{ TOK_ACCOUNT_IDX, ACCOUNT },
	88	{ TOK_MACHINE_IDX, MACHINE },
	89	{ TOK_MACDEF_IDX, MACDEF }
49633efb RM	90	};
	91
	92
	93
	94	int
	95	ruserpass(host, aname, apass)
	96	char host, aname, *apass;
	97	{
2de99474	98	char hdir, buf, *tmp;
49633efb RM	99	char myname[1024], *mydomain;
	100	int t, i, c, usedefault = 0;
	101	struct stat stb;
	102
d68171ed UD	103	hdir = __secure_getenv("HOME");
	104	if (hdir == NULL) {
	105	/* If we can't get HOME, fail instead of trying ".",
	106	which is no improvement. This really should call
	107	getpwuid(getuid()). */
	108	/hdir = ".";/
	109	return -1;
	110	}
2de99474 UD	111
	112	buf = alloca (strlen (hdir) + 8);
	113
86187531	114	__stpcpy (__stpcpy (buf, hdir), "/.netrc");
49633efb RM	115	cfile = fopen(buf, "r");
49633efb RM	116	if (cfile == NULL) {
2de99474 UD	117	if (errno != ENOENT)
2de99474 UD	118	warn("%s", buf);
49633efb RM	119	return (0);
49633efb RM	120	}
50304ef0	121	if (__gethostname(myname, sizeof(myname)) < 0)
49633efb	122	myname[0] = '\0';
390500b1	123	mydomain = __strchrnul(myname, '.');
49633efb RM	124	next:
	125	while ((t = token())) switch(t) {
	126
	127	case DEFAULT:
	128	usedefault = 1;
	129	/* FALL THROUGH */
	130
	131	case MACHINE:
	132	if (!usedefault) {
	133	if (token() != ID)
	134	continue;
	135	/*
	136	* Allow match either for user's input host name
2de99474	137	* or official hostname. Also allow match of
49633efb RM	138	* incompletely-specified host in local domain.
49633efb RM	139	*/
50304ef0	140	if (__strcasecmp(host, tokval) == 0)
49633efb	141	goto match;
50304ef0	142	/* if (__strcasecmp(hostname, tokval) == 0)
2de99474	143	goto match;
49633efb	144	if ((tmp = strchr(hostname, '.')) != NULL &&
50304ef0 UD	145	__strcasecmp(tmp, mydomain) == 0 &&
50304ef0 UD	146	__strncasecmp(hostname, tokval, tmp-hostname) == 0 &&
49633efb RM	147	tokval[tmp - hostname] == '\0')
	148	goto match; */
	149	if ((tmp = strchr(host, '.')) != NULL &&
50304ef0 UD	150	__strcasecmp(tmp, mydomain) == 0 &&
50304ef0 UD	151	__strncasecmp(host, tokval, tmp - host) == 0 &&
49633efb RM	152	tokval[tmp - host] == '\0')
	153	goto match;
	154	continue;
	155	}
	156	match:
	157	while ((t = token()) && t != MACHINE && t != DEFAULT) switch(t) {
	158
	159	case LOGIN:
	160	if (token())
2de99474	161	if (*aname == 0) {
49633efb RM	162	*aname = malloc((unsigned) strlen(tokval) + 1);
	163	(void) strcpy(*aname, tokval);
	164	} else {
	165	if (strcmp(*aname, tokval))
	166	goto next;
	167	}
	168	break;
	169	case PASSWD:
	170	if (strcmp(*aname, "anonymous") &&
	171	fstat(fileno(cfile), &stb) >= 0 &&
	172	(stb.st_mode & 077) != 0) {
2de99474 UD	173	warnx(_("Error: .netrc file is readable by others."));
2de99474 UD	174	warnx(_("Remove password or make file unreadable by others."));
49633efb RM	175	goto bad;
	176	}
	177	if (token() && *apass == 0) {
	178	*apass = malloc((unsigned) strlen(tokval) + 1);
	179	(void) strcpy(*apass, tokval);
	180	}
	181	break;
	182	case ACCOUNT:
	183	#if 0
	184	if (fstat(fileno(cfile), &stb) >= 0
	185	&& (stb.st_mode & 077) != 0) {
	186	warnx("Error: .netrc file is readable by others.");
	187	warnx("Remove account or make file unreadable by others.");
	188	goto bad;
	189	}
	190	if (token() && *aacct == 0) {
	191	*aacct = malloc((unsigned) strlen(tokval) + 1);
	192	(void) strcpy(*aacct, tokval);
	193	}
	194	#endif
	195	break;
	196	case MACDEF:
	197	#if 0
	198	if (proxy) {
	199	(void) fclose(cfile);
	200	return (0);
2de99474	201	}
eb27c43f UD	202	while ((c=getc_unlocked(cfile)) != EOF && c == ' '
eb27c43f UD	203	\|\| c == '\t');
49633efb RM	204	if (c == EOF \|\| c == '\n') {
	205	printf("Missing macdef name argument.\n");
	206	goto bad;
	207	}
	208	if (macnum == 16) {
	209	printf("Limit of 16 macros have already been defined\n");
	210	goto bad;
	211	}
	212	tmp = macros[macnum].mac_name;
	213	*tmp++ = c;
eb27c43f	214	for (i=0; i < 8 && (c=getc_unlocked(cfile)) != EOF &&
49633efb RM	215	!isspace(c); ++i) {
	216	*tmp++ = c;
	217	}
	218	if (c == EOF) {
	219	printf("Macro definition missing null line terminator.\n");
	220	goto bad;
	221	}
	222	*tmp = '\0';
	223	if (c != '\n') {
eb27c43f UD	224	while ((c=getc_unlocked(cfile)) != EOF
eb27c43f UD	225	&& c != '\n');
49633efb RM	226	}
	227	if (c == EOF) {
	228	printf("Macro definition missing null line terminator.\n");
	229	goto bad;
	230	}
	231	if (macnum == 0) {
	232	macros[macnum].mac_start = macbuf;
	233	}
	234	else {
	235	macros[macnum].mac_start = macros[macnum-1].mac_end + 1;
	236	}
	237	tmp = macros[macnum].mac_start;
	238	while (tmp != macbuf + 4096) {
eb27c43f	239	if ((c=getc_unlocked(cfile)) == EOF) {
49633efb RM	240	printf("Macro definition missing null line terminator.\n");
	241	goto bad;
	242	}
	243	*tmp = c;
	244	if (*tmp == '\n') {
	245	if (*(tmp-1) == '\0') {
	246	macros[macnum++].mac_end = tmp - 1;
	247	break;
	248	}
	249	*tmp = '\0';
	250	}
	251	tmp++;
	252	}
	253	if (tmp == macbuf + 4096) {
	254	printf("4K macro buffer exceeded\n");
	255	goto bad;
	256	}
	257	#endif
	258	break;
	259	default:
2de99474	260	warnx(_("Unknown .netrc keyword %s"), tokval);
49633efb RM	261	break;
	262	}
	263	goto done;
	264	}
	265	done:
	266	(void) fclose(cfile);
	267	return (0);
	268	bad:
	269	(void) fclose(cfile);
	270	return (-1);
	271	}
	272
	273	static int
	274	token()
	275	{
	276	char *cp;
	277	int c;
390500b1	278	int i;
49633efb	279
77ccaba1	280	if (feof_unlocked(cfile) \|\| ferror_unlocked(cfile))
49633efb	281	return (0);
eb27c43f	282	while ((c = getc_unlocked(cfile)) != EOF &&
49633efb RM	283	(c == '\n' \|\| c == '\t' \|\| c == ' ' \|\| c == ','))
	284	continue;
	285	if (c == EOF)
	286	return (0);
	287	cp = tokval;
	288	if (c == '"') {
eb27c43f	289	while ((c = getc_unlocked(cfile)) != EOF && c != '"') {
49633efb	290	if (c == '\\')
eb27c43f	291	c = getc_unlocked(cfile);
49633efb RM	292	*cp++ = c;
	293	}
	294	} else {
	295	*cp++ = c;
eb27c43f	296	while ((c = getc_unlocked(cfile)) != EOF
49633efb RM	297	&& c != '\n' && c != '\t' && c != ' ' && c != ',') {
49633efb RM	298	if (c == '\\')
eb27c43f	299	c = getc_unlocked(cfile);
49633efb RM	300	*cp++ = c;
	301	}
	302	}
	303	*cp = 0;
	304	if (tokval[0] == 0)
	305	return (0);
390500b1 UD	306	for (i = 0; i < sizeof (toktab) / sizeof (toktab[0]); ++i)
	307	if (!strcmp(&tokstr[toktab[i].tokstr_off], tokval))
	308	return toktab[i].tval;
49633efb RM	309	return (ID);
49633efb RM	310	}