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