[unix-history] / usr / src / usr.bin / ftp / ruserpass.c

/*
 * Copyright (c) 1985 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.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *	This product includes software developed by the University of
 *	California, Berkeley and its contributors.
 * 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.
 */

#ifndef lint
static char sccsid[] = "@(#)ruserpass.c	5.3 (Berkeley) 3/1/91";
#endif /* not lint */

#include <sys/types.h>
#include <stdio.h>
#include <utmp.h>
#include <ctype.h>
#include <sys/stat.h>
#include <errno.h>
#include "ftp_var.h"

char	*renvlook(), *malloc(), *index(), *getenv(), *getpass(), *getlogin();
char	*strcpy();
struct	utmp *getutmp();
static	FILE *cfile;

#define	DEFAULT	1
#define	LOGIN	2
#define	PASSWD	3
#define	ACCOUNT 4
#define MACDEF  5
#define	ID	10
#define	MACH	11

static char tokval[100];

static struct toktab {
	char *tokstr;
	int tval;
} toktab[]= {
	"default",	DEFAULT,
	"login",	LOGIN,
	"password",	PASSWD,
	"passwd",	PASSWD,
	"account",	ACCOUNT,
	"machine",	MACH,
	"macdef",	MACDEF,
	0,		0
};

ruserpass(host, aname, apass, aacct)
	char *host, **aname, **apass, **aacct;
{
	char *hdir, buf[BUFSIZ], *tmp;
	char myname[MAXHOSTNAMELEN], *mydomain;
	int t, i, c, usedefault = 0;
	struct stat stb;
	static int token();

	hdir = getenv("HOME");
	if (hdir == NULL)
		hdir = ".";
	(void) sprintf(buf, "%s/.netrc", hdir);
	cfile = fopen(buf, "r");
	if (cfile == NULL) {
		if (errno != ENOENT)
			perror(buf);
		return(0);
	}
	if (gethostname(myname, sizeof(myname)) < 0)
		myname[0] = '\0';
	if ((mydomain = index(myname, '.')) == NULL)
		mydomain = "";
next:
	while ((t = token())) switch(t) {

	case DEFAULT:
		usedefault = 1;
		/* FALL THROUGH */

	case MACH:
		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 = index(hostname, '.')) != NULL &&
			    strcasecmp(tmp, mydomain) == 0 &&
			    strncasecmp(hostname, tokval, tmp-hostname) == 0 &&
			    tokval[tmp - hostname] == '\0')
				goto match;
			if ((tmp = index(host, '.')) != NULL &&
			    strcasecmp(tmp, mydomain) == 0 &&
			    strncasecmp(host, tokval, tmp - host) == 0 &&
			    tokval[tmp - host] == '\0')
				goto match;
			continue;
		}
	match:
		while ((t = token()) && t != MACH && 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) {
	fprintf(stderr, "Error - .netrc file not correct mode.\n");
	fprintf(stderr, "Remove password or correct mode.\n");
				goto bad;
			}
			if (token() && *apass == 0) {
				*apass = malloc((unsigned) strlen(tokval) + 1);
				(void) strcpy(*apass, tokval);
			}
			break;
		case ACCOUNT:
			if (fstat(fileno(cfile), &stb) >= 0
			    && (stb.st_mode & 077) != 0) {
	fprintf(stderr, "Error - .netrc file not correct mode.\n");
	fprintf(stderr, "Remove account or correct mode.\n");
				goto bad;
			}
			if (token() && *aacct == 0) {
				*aacct = malloc((unsigned) strlen(tokval) + 1);
				(void) strcpy(*aacct, tokval);
			}
			break;
		case MACDEF:
			if (proxy) {
				(void) fclose(cfile);
				return(0);
			}
			while ((c=getc(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(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(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(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;
			}
			break;
		default:
	fprintf(stderr, "Unknown .netrc keyword %s\n", tokval);
			break;
		}
		goto done;
	}
done:
	(void) fclose(cfile);
	return(0);
bad:
	(void) fclose(cfile);
	return(-1);
}

static
token()
{
	char *cp;
	int c;
	struct toktab *t;

	if (feof(cfile))
		return (0);
	while ((c = getc(cfile)) != EOF &&
	    (c == '\n' || c == '\t' || c == ' ' || c == ','))
		continue;
	if (c == EOF)
		return (0);
	cp = tokval;
	if (c == '"') {
		while ((c = getc(cfile)) != EOF && c != '"') {
			if (c == '\\')
				c = getc(cfile);
			*cp++ = c;
		}
	} else {
		*cp++ = c;
		while ((c = getc(cfile)) != EOF
		    && c != '\n' && c != '\t' && c != ' ' && c != ',') {
			if (c == '\\')
				c = getc(cfile);
			*cp++ = c;
		}
	}
	*cp = 0;
	if (tokval[0] == 0)
		return (0);
	for (t = toktab; t->tokstr; t++)
		if (!strcmp(t->tokstr, tokval))
			return (t->tval);
	return (ID);
}
Commit	Line	Data
f54c1094 WJ	1	/*
	2	* Copyright (c) 1985 Regents of the University of California.
	3	* 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.
	13	* 3. All advertising materials mentioning features or use of this software
	14	* must display the following acknowledgement:
	15	* This product includes software developed by the University of
	16	* California, Berkeley and its contributors.
	17	* 4. Neither the name of the University nor the names of its contributors
	18	* may be used to endorse or promote products derived from this software
	19	* without specific prior written permission.
	20	*
	21	* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
	22	* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
	23	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
	24	* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
	25	* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
	26	* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
	27	* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
	28	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
	29	* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
	30	* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
	31	* SUCH DAMAGE.
	32	*/
	33
	34	#ifndef lint
	35	static char sccsid[] = "@(#)ruserpass.c 5.3 (Berkeley) 3/1/91";
	36	#endif /* not lint */
	37
	38	#include <sys/types.h>
	39	#include <stdio.h>
	40	#include <utmp.h>
	41	#include <ctype.h>
	42	#include <sys/stat.h>
	43	#include <errno.h>
	44	#include "ftp_var.h"
	45
	46	char renvlook(), malloc(), index(), getenv(), getpass(), getlogin();
	47	char *strcpy();
	48	struct utmp *getutmp();
	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 MACH 11
	58
	59	static char tokval[100];
	60
	61	static struct toktab {
	62	char *tokstr;
	63	int tval;
	64	} toktab[]= {
65	"default", DEFAULT,
66	"login", LOGIN,
67	"password", PASSWD,
68	"passwd", PASSWD,
69	"account", ACCOUNT,
70	"machine", MACH,
71	"macdef", MACDEF,
72	0, 0
73	};
74
75	ruserpass(host, aname, apass, aacct)
76	char host, aname, apass, *aacct;
77	{
78	char hdir, buf[BUFSIZ], tmp;
79	char myname[MAXHOSTNAMELEN], *mydomain;
80	int t, i, c, usedefault = 0;
81	struct stat stb;
82	static int token();
83
84	hdir = getenv("HOME");
85	if (hdir == NULL)
86	hdir = ".";
87	(void) sprintf(buf, "%s/.netrc", hdir);
88	cfile = fopen(buf, "r");
89	if (cfile == NULL) {
90	if (errno != ENOENT)
91	perror(buf);
92	return(0);
93	}
94	if (gethostname(myname, sizeof(myname)) < 0)
95	myname[0] = '\0';
96	if ((mydomain = index(myname, '.')) == NULL)
97	mydomain = "";
98	next:
99	while ((t = token())) switch(t) {
100
101	case DEFAULT:
102	usedefault = 1;
103	/* FALL THROUGH */
104
105	case MACH:
106	if (!usedefault) {
107	if (token() != ID)
108	continue;
109	/*
110	* Allow match either for user's input host name
111	* or official hostname. Also allow match of
112	* incompletely-specified host in local domain.
113	*/
114	if (strcasecmp(host, tokval) == 0)
115	goto match;
116	if (strcasecmp(hostname, tokval) == 0)
117	goto match;
118	if ((tmp = index(hostname, '.')) != NULL &&
119	strcasecmp(tmp, mydomain) == 0 &&
120	strncasecmp(hostname, tokval, tmp-hostname) == 0 &&
121	tokval[tmp - hostname] == '\0')
122	goto match;
123	if ((tmp = index(host, '.')) != NULL &&
124	strcasecmp(tmp, mydomain) == 0 &&
125	strncasecmp(host, tokval, tmp - host) == 0 &&
126	tokval[tmp - host] == '\0')
127	goto match;
128	continue;
129	}
130	match:
131	while ((t = token()) && t != MACH && t != DEFAULT) switch(t) {
132
133	case LOGIN:
134	if (token())
135	if (*aname == 0) {
136	*aname = malloc((unsigned) strlen(tokval) + 1);
137	(void) strcpy(*aname, tokval);
138	} else {
139	if (strcmp(*aname, tokval))
140	goto next;
141	}
142	break;
143	case PASSWD:
144	if (strcmp(*aname, "anonymous") &&
145	fstat(fileno(cfile), &stb) >= 0 &&
146	(stb.st_mode & 077) != 0) {
147	fprintf(stderr, "Error - .netrc file not correct mode.\n");
148	fprintf(stderr, "Remove password or correct mode.\n");
149	goto bad;
150	}
151	if (token() && *apass == 0) {
152	*apass = malloc((unsigned) strlen(tokval) + 1);
153	(void) strcpy(*apass, tokval);
154	}
155	break;
156	case ACCOUNT:
157	if (fstat(fileno(cfile), &stb) >= 0
158	&& (stb.st_mode & 077) != 0) {
159	fprintf(stderr, "Error - .netrc file not correct mode.\n");
160	fprintf(stderr, "Remove account or correct mode.\n");
161	goto bad;
162	}
163	if (token() && *aacct == 0) {
164	*aacct = malloc((unsigned) strlen(tokval) + 1);
165	(void) strcpy(*aacct, tokval);
166	}
167	break;
168	case MACDEF:
169	if (proxy) {
170	(void) fclose(cfile);
171	return(0);
172	}
173	while ((c=getc(cfile)) != EOF && c == ' ' \|\| c == '\t');
174	if (c == EOF \|\| c == '\n') {
175	printf("Missing macdef name argument.\n");
176	goto bad;
177	}
178	if (macnum == 16) {
179	printf("Limit of 16 macros have already been defined\n");
180	goto bad;
181	}
182	tmp = macros[macnum].mac_name;
183	*tmp++ = c;
184	for (i=0; i < 8 && (c=getc(cfile)) != EOF &&
185	!isspace(c); ++i) {
186	*tmp++ = c;
187	}
188	if (c == EOF) {
189	printf("Macro definition missing null line terminator.\n");
190	goto bad;
191	}
192	*tmp = '\0';
193	if (c != '\n') {
194	while ((c=getc(cfile)) != EOF && c != '\n');
195	}
196	if (c == EOF) {
197	printf("Macro definition missing null line terminator.\n");
198	goto bad;
199	}
200	if (macnum == 0) {
201	macros[macnum].mac_start = macbuf;
202	}
203	else {
204	macros[macnum].mac_start = macros[macnum-1].mac_end + 1;
205	}
206	tmp = macros[macnum].mac_start;
207	while (tmp != macbuf + 4096) {
208	if ((c=getc(cfile)) == EOF) {
209	printf("Macro definition missing null line terminator.\n");
210	goto bad;
211	}
212	*tmp = c;
213	if (*tmp == '\n') {
214	if (*(tmp-1) == '\0') {
215	macros[macnum++].mac_end = tmp - 1;
216	break;
217	}
218	*tmp = '\0';
219	}
220	tmp++;
221	}
222	if (tmp == macbuf + 4096) {
223	printf("4K macro buffer exceeded\n");
224	goto bad;
225	}
226	break;
227	default:
228	fprintf(stderr, "Unknown .netrc keyword %s\n", tokval);
229	break;
230	}
231	goto done;
232	}
233	done:
234	(void) fclose(cfile);
235	return(0);
236	bad:
237	(void) fclose(cfile);
238	return(-1);
239	}
240
241	static
242	token()
243	{
244	char *cp;
245	int c;
246	struct toktab *t;
247
248	if (feof(cfile))
249	return (0);
250	while ((c = getc(cfile)) != EOF &&
251	(c == '\n' \|\| c == '\t' \|\| c == ' ' \|\| c == ','))
252	continue;
253	if (c == EOF)
254	return (0);
255	cp = tokval;
256	if (c == '"') {
257	while ((c = getc(cfile)) != EOF && c != '"') {
258	if (c == '\\')
259	c = getc(cfile);
260	*cp++ = c;
261	}
262	} else {
263	*cp++ = c;
264	while ((c = getc(cfile)) != EOF
265	&& c != '\n' && c != '\t' && c != ' ' && c != ',') {
266	if (c == '\\')
267	c = getc(cfile);
268	*cp++ = c;
269	}
270	}
271	*cp = 0;
272	if (tokval[0] == 0)
273	return (0);
274	for (t = toktab; t->tokstr; t++)
275	if (!strcmp(t->tokstr, tokval))
276	return (t->tval);
277	return (ID);
278	}