[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 <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 = __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(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);
}
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	39	#include <errno.h>
3846463e	40	#include <netdb.h>
49633efb	41	#include <stdio.h>
2706ee38	42	#include <stdio_ext.h>
49633efb RM	43	#include <stdlib.h>
	44	#include <string.h>
	45	#include <unistd.h>
4360eafd	46	#include <libintl.h>
49633efb RM	47
	48	/* #include "ftp_var.h" */
	49
3846463e	50	static int token (void);
49633efb RM	51	static FILE *cfile;
	52
	53	#define DEFAULT 1
	54	#define LOGIN 2
	55	#define PASSWD 3
	56	#define ACCOUNT 4
	57	#define MACDEF 5
	58	#define ID 10
	59	#define MACHINE 11
	60
	61	static char tokval[100];
	62
390500b1 UD	63	static const char tokstr[] =
	64	{
	65	#define TOK_DEFAULT_IDX 0
	66	"default\0"
	67	#define TOK_LOGIN_IDX (TOK_DEFAULT_IDX + sizeof "default")
	68	"login\0"
	69	#define TOK_PASSWORD_IDX (TOK_LOGIN_IDX + sizeof "login")
	70	"password\0"
	71	#define TOK_PASSWD_IDX (TOK_PASSWORD_IDX + sizeof "password")
	72	"passwd\0"
	73	#define TOK_ACCOUNT_IDX (TOK_PASSWD_IDX + sizeof "passwd")
	74	"account\0"
	75	#define TOK_MACHINE_IDX (TOK_ACCOUNT_IDX + sizeof "account")
	76	"machine\0"
	77	#define TOK_MACDEF_IDX (TOK_MACHINE_IDX + sizeof "machine")
	78	"macdef"
	79	};
	80
	81	static const struct toktab {
	82	int tokstr_off;
49633efb RM	83	int tval;
49633efb RM	84	} toktab[]= {
390500b1 UD	85	{ TOK_DEFAULT_IDX, DEFAULT },
	86	{ TOK_LOGIN_IDX, LOGIN },
	87	{ TOK_PASSWORD_IDX, PASSWD },
	88	{ TOK_PASSWD_IDX, PASSWD },
	89	{ TOK_ACCOUNT_IDX, ACCOUNT },
	90	{ TOK_MACHINE_IDX, MACHINE },
	91	{ TOK_MACDEF_IDX, MACDEF }
49633efb RM	92	};
	93
	94
	95
	96	int
	97	ruserpass(host, aname, apass)
3846463e	98	const char host, aname, *apass;
49633efb	99	{
2de99474	100	char hdir, buf, *tmp;
49633efb	101	char myname[1024], *mydomain;
3846463e	102	int t, usedefault = 0;
8edf6e0d	103	struct stat64 stb;
49633efb	104
84b3fd84	105	hdir = __libc_secure_getenv("HOME");
d68171ed UD	106	if (hdir == NULL) {
	107	/* If we can't get HOME, fail instead of trying ".",
	108	which is no improvement. This really should call
	109	getpwuid(getuid()). */
	110	/hdir = ".";/
	111	return -1;
	112	}
2de99474 UD	113
	114	buf = alloca (strlen (hdir) + 8);
	115
86187531	116	__stpcpy (__stpcpy (buf, hdir), "/.netrc");
312be3f9	117	cfile = fopen(buf, "rce");
49633efb	118	if (cfile == NULL) {
2de99474 UD	119	if (errno != ENOENT)
2de99474 UD	120	warn("%s", buf);
49633efb RM	121	return (0);
49633efb RM	122	}
2706ee38 UD	123	/* No threads use this stream. */
2706ee38 UD	124	__fsetlocking (cfile, FSETLOCKING_BYCALLER);
50304ef0	125	if (__gethostname(myname, sizeof(myname)) < 0)
49633efb	126	myname[0] = '\0';
390500b1	127	mydomain = __strchrnul(myname, '.');
49633efb RM	128	next:
	129	while ((t = token())) switch(t) {
	130
	131	case DEFAULT:
	132	usedefault = 1;
	133	/* FALL THROUGH */
	134
	135	case MACHINE:
	136	if (!usedefault) {
	137	if (token() != ID)
	138	continue;
	139	/*
	140	* Allow match either for user's input host name
2de99474	141	* or official hostname. Also allow match of
49633efb RM	142	* incompletely-specified host in local domain.
49633efb RM	143	*/
50304ef0	144	if (__strcasecmp(host, tokval) == 0)
49633efb	145	goto match;
50304ef0	146	/* if (__strcasecmp(hostname, tokval) == 0)
2de99474	147	goto match;
49633efb	148	if ((tmp = strchr(hostname, '.')) != NULL &&
50304ef0 UD	149	__strcasecmp(tmp, mydomain) == 0 &&
50304ef0 UD	150	__strncasecmp(hostname, tokval, tmp-hostname) == 0 &&
49633efb RM	151	tokval[tmp - hostname] == '\0')
	152	goto match; */
	153	if ((tmp = strchr(host, '.')) != NULL &&
50304ef0 UD	154	__strcasecmp(tmp, mydomain) == 0 &&
50304ef0 UD	155	__strncasecmp(host, tokval, tmp - host) == 0 &&
49633efb RM	156	tokval[tmp - host] == '\0')
	157	goto match;
	158	continue;
	159	}
	160	match:
	161	while ((t = token()) && t != MACHINE && t != DEFAULT) switch(t) {
	162
	163	case LOGIN:
3846463e	164	if (token()) {
2de99474	165	if (*aname == 0) {
3846463e UD	166	char *newp;
	167	newp = malloc((unsigned) strlen(tokval) + 1);
	168	if (newp == NULL)
	169	{
	170	warnx(_("out of memory"));
	171	goto bad;
	172	}
	173	*aname = strcpy(newp, tokval);
49633efb RM	174	} else {
	175	if (strcmp(*aname, tokval))
	176	goto next;
	177	}
3846463e	178	}
49633efb RM	179	break;
	180	case PASSWD:
	181	if (strcmp(*aname, "anonymous") &&
8edf6e0d	182	fstat64(fileno(cfile), &stb) >= 0 &&
49633efb	183	(stb.st_mode & 077) != 0) {
2de99474 UD	184	warnx(_("Error: .netrc file is readable by others."));
2de99474 UD	185	warnx(_("Remove password or make file unreadable by others."));
49633efb RM	186	goto bad;
	187	}
	188	if (token() && *apass == 0) {
3846463e UD	189	char *newp;
	190	newp = malloc((unsigned) strlen(tokval) + 1);
	191	if (newp == NULL)
	192	{
	193	warnx(_("out of memory"));
	194	goto bad;
	195	}
	196	*apass = strcpy(newp, tokval);
49633efb RM	197	}
	198	break;
	199	case ACCOUNT:
	200	#if 0
8edf6e0d	201	if (fstat64(fileno(cfile), &stb) >= 0
49633efb RM	202	&& (stb.st_mode & 077) != 0) {
	203	warnx("Error: .netrc file is readable by others.");
	204	warnx("Remove account or make file unreadable by others.");
	205	goto bad;
	206	}
	207	if (token() && *aacct == 0) {
	208	*aacct = malloc((unsigned) strlen(tokval) + 1);
	209	(void) strcpy(*aacct, tokval);
	210	}
	211	#endif
	212	break;
	213	case MACDEF:
	214	#if 0
	215	if (proxy) {
	216	(void) fclose(cfile);
	217	return (0);
2de99474	218	}
eb27c43f UD	219	while ((c=getc_unlocked(cfile)) != EOF && c == ' '
eb27c43f UD	220	\|\| c == '\t');
49633efb RM	221	if (c == EOF \|\| c == '\n') {
	222	printf("Missing macdef name argument.\n");
	223	goto bad;
	224	}
	225	if (macnum == 16) {
	226	printf("Limit of 16 macros have already been defined\n");
	227	goto bad;
	228	}
	229	tmp = macros[macnum].mac_name;
	230	*tmp++ = c;
eb27c43f	231	for (i=0; i < 8 && (c=getc_unlocked(cfile)) != EOF &&
49633efb RM	232	!isspace(c); ++i) {
	233	*tmp++ = c;
	234	}
	235	if (c == EOF) {
	236	printf("Macro definition missing null line terminator.\n");
	237	goto bad;
	238	}
	239	*tmp = '\0';
	240	if (c != '\n') {
eb27c43f UD	241	while ((c=getc_unlocked(cfile)) != EOF
eb27c43f UD	242	&& c != '\n');
49633efb RM	243	}
	244	if (c == EOF) {
	245	printf("Macro definition missing null line terminator.\n");
	246	goto bad;
	247	}
	248	if (macnum == 0) {
	249	macros[macnum].mac_start = macbuf;
	250	}
	251	else {
	252	macros[macnum].mac_start = macros[macnum-1].mac_end + 1;
	253	}
	254	tmp = macros[macnum].mac_start;
	255	while (tmp != macbuf + 4096) {
eb27c43f	256	if ((c=getc_unlocked(cfile)) == EOF) {
49633efb RM	257	printf("Macro definition missing null line terminator.\n");
	258	goto bad;
	259	}
	260	*tmp = c;
	261	if (*tmp == '\n') {
	262	if (*(tmp-1) == '\0') {
	263	macros[macnum++].mac_end = tmp - 1;
	264	break;
	265	}
	266	*tmp = '\0';
	267	}
	268	tmp++;
	269	}
	270	if (tmp == macbuf + 4096) {
	271	printf("4K macro buffer exceeded\n");
	272	goto bad;
	273	}
	274	#endif
	275	break;
	276	default:
2de99474	277	warnx(_("Unknown .netrc keyword %s"), tokval);
49633efb RM	278	break;
	279	}
	280	goto done;
	281	}
	282	done:
	283	(void) fclose(cfile);
	284	return (0);
	285	bad:
	286	(void) fclose(cfile);
	287	return (-1);
	288	}
e2ec9b4d	289	libc_hidden_def (ruserpass)
49633efb RM	290
	291	static int
	292	token()
	293	{
	294	char *cp;
	295	int c;
390500b1	296	int i;
49633efb	297
77ccaba1	298	if (feof_unlocked(cfile) \|\| ferror_unlocked(cfile))
49633efb	299	return (0);
eb27c43f	300	while ((c = getc_unlocked(cfile)) != EOF &&
49633efb RM	301	(c == '\n' \|\| c == '\t' \|\| c == ' ' \|\| c == ','))
	302	continue;
	303	if (c == EOF)
	304	return (0);
	305	cp = tokval;
	306	if (c == '"') {
eb27c43f	307	while ((c = getc_unlocked(cfile)) != EOF && c != '"') {
49633efb	308	if (c == '\\')
eb27c43f	309	c = getc_unlocked(cfile);
49633efb RM	310	*cp++ = c;
	311	}
	312	} else {
	313	*cp++ = c;
eb27c43f	314	while ((c = getc_unlocked(cfile)) != EOF
49633efb RM	315	&& c != '\n' && c != '\t' && c != ' ' && c != ',') {
49633efb RM	316	if (c == '\\')
eb27c43f	317	c = getc_unlocked(cfile);
49633efb RM	318	*cp++ = c;
	319	}
	320	}
	321	*cp = 0;
	322	if (tokval[0] == 0)
	323	return (0);
c3301189	324	for (i = 0; i < (int) (sizeof (toktab) / sizeof (toktab[0])); ++i)
390500b1 UD	325	if (!strcmp(&tokstr[toktab[i].tokstr_off], tokval))
390500b1 UD	326	return toktab[i].tval;
49633efb RM	327	return (ID);
49633efb RM	328	}