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/*
 * 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.
 */
 
/*
 * from: @(#)ruserpass.c        5.3 (Berkeley) 3/1/91
 */
char ruserpass_rcsid[] =
  "$Id: ruserpass.c,v 1.1 2002-03-25 22:32:01 simons Exp $";
 
#include <stdio.h>
#include <stdlib.h>
#include <utmp.h>
#include <ctype.h>
#include <sys/stat.h>
#include <errno.h>
#include <string.h>
#include <unistd.h>
#include "ftp_var.h"
 
static FILE *cfile;
static int token(void);
 
#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 {
        const char *tokstr;
        int tval;
} toktab[]= {
        { "default",    DEFAULT },
        { "login",      LOGIN },
        { "password",   PASSWD },
        { "passwd",     PASSWD },
        { "account",    ACCOUNT },
        { "machine",    MACH },
        { "macdef",     MACDEF },
        { NULL,         0 }
};
 
int
xruserpass(const char *host, char **aname, char **apass, char **aacct)
{
        const char *hdir;
        char buf[BUFSIZ], *tmp;
        char myname[MAXHOSTNAMELEN];
        const char *mydomain;
        int t, i, c, usedefault = 0;
        struct stat stb;
 
        hdir = getenv("HOME");
        if (hdir == NULL)
                hdir = ".";
        snprintf(buf, sizeof(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 = strchr(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 (*aname==NULL) {
        fprintf(stderr, "Error: `password' must follow `login' in .netrc\n");
                                goto bad;
                        }
                        if (strcmp(*aname, "anonymous") &&
                            fstat(fileno(cfile), &stb) >= 0 &&
                            (stb.st_mode & 077) != 0) {
        fprintf(stderr, "Error - .netrc file not correct permissions.\n");
        fprintf(stderr, "Remove password or correct mode (should be 600).\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 permissions.\n");
        fprintf(stderr, "Remove account or correct mode (should be 600).\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 + MACBUF_SIZE) {
                                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 + MACBUF_SIZE) {
                                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
int
token(void)
{
        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);
}

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[/] [or1k/] [trunk/] [uclinux/] [userland/] [ftp/] [ftp/] [ruserpass.c] - Blame information for rev 1771

Line No.	Rev	Author	Line
1	763	simons	`/*`
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			`/*`
35			`* from: @(#)ruserpass.c 5.3 (Berkeley) 3/1/91`
36			`*/`
37			`char ruserpass_rcsid[] =`
38			`"$Id: ruserpass.c,v 1.1 2002-03-25 22:32:01 simons Exp $";`
39
40			`#include <stdio.h>`
41			`#include <stdlib.h>`
42			`#include <utmp.h>`
43			`#include <ctype.h>`
44			`#include <sys/stat.h>`
45			`#include <errno.h>`
46			`#include <string.h>`
47			`#include <unistd.h>`
48			`#include "ftp_var.h"`
49
50			`static FILE *cfile;`
51			`static int token(void);`
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 MACH 11`
60
61			`static char tokval[100];`
62
63			`static struct toktab {`
64			`const char *tokstr;`
65			`int tval;`
66			`} toktab[]= {`
67			`{ "default", DEFAULT },`
68			`{ "login", LOGIN },`
69			`{ "password", PASSWD },`
70			`{ "passwd", PASSWD },`
71			`{ "account", ACCOUNT },`
72			`{ "machine", MACH },`
73			`{ "macdef", MACDEF },`
74			`{ NULL, 0 }`
75			`};`
76
77			`int`
78			`xruserpass(const char host, char aname, char apass, char *aacct)`
79			`{`
80			`const char *hdir;`
81			`char buf[BUFSIZ], *tmp;`
82			`char myname[MAXHOSTNAMELEN];`
83			`const char *mydomain;`
84			`int t, i, c, usedefault = 0;`
85			`struct stat stb;`
86
87			`hdir = getenv("HOME");`
88			`if (hdir == NULL)`
89			`hdir = ".";`
90			`snprintf(buf, sizeof(buf), "%s/.netrc", hdir);`
91			`cfile = fopen(buf, "r");`
92			`if (cfile == NULL) {`
93			`if (errno != ENOENT)`
94			`perror(buf);`
95			`return(0);`
96			`}`
97			`if (gethostname(myname, sizeof(myname)) < 0)`
98			`myname[0] = '\0';`
99			`if ((mydomain = strchr(myname, '.')) == NULL)`
100			`mydomain = "";`
101			`next:`
102			`while ((t = token())) switch(t) {`
103
104			`case DEFAULT:`
105			`usedefault = 1;`
106			`/* FALL THROUGH */`
107
108			`case MACH:`
109			`if (!usedefault) {`
110			`if (token() != ID)`
111			`continue;`
112			`/*`
113			`* Allow match either for user's input host name`
114			`* or official hostname. Also allow match of`
115			`* incompletely-specified host in local domain.`
116			`*/`
117			`if (strcasecmp(host, tokval) == 0)`
118			`goto match;`
119			`if (strcasecmp(hostname, tokval) == 0)`
120			`goto match;`
121			`if ((tmp = index(hostname, '.')) != NULL &&`
122			`strcasecmp(tmp, mydomain) == 0 &&`
123			`strncasecmp(hostname, tokval, tmp-hostname) == 0 &&`
124			`tokval[tmp - hostname] == '\0')`
125			`goto match;`
126			`if ((tmp = index(host, '.')) != NULL &&`
127			`strcasecmp(tmp, mydomain) == 0 &&`
128			`strncasecmp(host, tokval, tmp - host) == 0 &&`
129			`tokval[tmp - host] == '\0')`
130			`goto match;`
131			`continue;`
132			`}`
133			`match:`
134			`while ((t = token()) && t != MACH && t != DEFAULT) switch(t) {`
135
136			`case LOGIN:`
137			`if (token()) {`
138			`if (*aname == 0) {`
139			`*aname = malloc((unsigned) strlen(tokval) + 1);`
140			`(void) strcpy(*aname, tokval);`
141			`} else {`
142			`if (strcmp(*aname, tokval))`
143			`goto next;`
144			`}`
145			`}`
146			`break;`
147			`case PASSWD:`
148			`if (*aname==NULL) {`
149			fprintf(stderr, "Error: `password' must follow `login' in .netrc\n");
150			`goto bad;`
151			`}`
152			`if (strcmp(*aname, "anonymous") &&`
153			`fstat(fileno(cfile), &stb) >= 0 &&`
154			`(stb.st_mode & 077) != 0) {`
155			`fprintf(stderr, "Error - .netrc file not correct permissions.\n");`
156			`fprintf(stderr, "Remove password or correct mode (should be 600).\n");`
157			`goto bad;`
158			`}`
159			`if (token() && *apass == 0) {`
160			`*apass = malloc((unsigned) strlen(tokval) + 1);`
161			`(void) strcpy(*apass, tokval);`
162			`}`
163			`break;`
164			`case ACCOUNT:`
165			`if (fstat(fileno(cfile), &stb) >= 0`
166			`&& (stb.st_mode & 077) != 0) {`
167			`fprintf(stderr, "Error - .netrc file not correct permissions.\n");`
168			`fprintf(stderr, "Remove account or correct mode (should be 600).\n");`
169			`goto bad;`
170			`}`
171			`if (token() && *aacct == 0) {`
172			`*aacct = malloc((unsigned) strlen(tokval) + 1);`
173			`(void) strcpy(*aacct, tokval);`
174			`}`
175			`break;`
176			`case MACDEF:`
177			`if (proxy) {`
178			`(void) fclose(cfile);`
179			`return(0);`
180			`}`
181			`while ((c=getc(cfile)) != EOF && (c == ' ' \|\| c == '\t'));`
182			`if (c == EOF \|\| c == '\n') {`
183			`printf("Missing macdef name argument.\n");`
184			`goto bad;`
185			`}`
186			`if (macnum == 16) {`
187			`printf("Limit of 16 macros have already been defined\n");`
188			`goto bad;`
189			`}`
190			`tmp = macros[macnum].mac_name;`
191			`*tmp++ = c;`
192			`for (i=0; i < 8 && (c=getc(cfile)) != EOF &&`
193			`!isspace(c); ++i) {`
194			`*tmp++ = c;`
195			`}`
196			`if (c == EOF) {`
197			`printf("Macro definition missing null line terminator.\n");`
198			`goto bad;`
199			`}`
200			`*tmp = '\0';`
201			`if (c != '\n') {`
202			`while ((c=getc(cfile)) != EOF && c != '\n');`
203			`}`
204			`if (c == EOF) {`
205			`printf("Macro definition missing null line terminator.\n");`
206			`goto bad;`
207			`}`
208			`if (macnum == 0) {`
209			`macros[macnum].mac_start = macbuf;`
210			`}`
211			`else {`
212			`macros[macnum].mac_start = macros[macnum-1].mac_end + 1;`
213			`}`
214			`tmp = macros[macnum].mac_start;`
215			`while (tmp != macbuf + MACBUF_SIZE) {`
216			`if ((c=getc(cfile)) == EOF) {`
217			`printf("Macro definition missing null line terminator.\n");`
218			`goto bad;`
219			`}`
220			`*tmp = c;`
221			`if (*tmp == '\n') {`
222			`if (*(tmp-1) == '\0') {`
223			`macros[macnum++].mac_end = tmp - 1;`
224			`break;`
225			`}`
226			`*tmp = '\0';`
227			`}`
228			`tmp++;`
229			`}`
230			`if (tmp == macbuf + MACBUF_SIZE) {`
231			`printf("4K macro buffer exceeded\n");`
232			`goto bad;`
233			`}`
234			`break;`
235			`default:`
236			`fprintf(stderr, "Unknown .netrc keyword %s\n", tokval);`
237			`break;`
238			`}`
239			`goto done;`
240			`}`
241			`done:`
242			`(void) fclose(cfile);`
243			`return(0);`
244			`bad:`
245			`(void) fclose(cfile);`
246			`return(-1);`
247			`}`
248
249			`static`
250			`int`
251			`token(void)`
252			`{`
253			`char *cp;`
254			`int c;`
255			`struct toktab *t;`
256
257			`if (feof(cfile))`
258			`return (0);`
259			`while ((c = getc(cfile)) != EOF &&`
260			`(c == '\n' \|\| c == '\t' \|\| c == ' ' \|\| c == ','))`
261			`continue;`
262			`if (c == EOF)`
263			`return (0);`
264			`cp = tokval;`
265			`if (c == '"') {`
266			`while ((c = getc(cfile)) != EOF && c != '"') {`
267			`if (c == '\\')`
268			`c = getc(cfile);`
269			`*cp++ = c;`
270			`}`
271			`} else {`
272			`*cp++ = c;`
273			`while ((c = getc(cfile)) != EOF`
274			`&& c != '\n' && c != '\t' && c != ' ' && c != ',') {`
275			`if (c == '\\')`
276			`c = getc(cfile);`
277			`*cp++ = c;`
278			`}`
279			`}`
280			`*cp = 0;`
281			`if (tokval[0] == 0)`
282			`return (0);`
283			`for (t = toktab; t->tokstr; t++)`
284			`if (!strcmp(t->tokstr, tokval))`
285			`return (t->tval);`
286			`return (ID);`
287			`}`