/*
* 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.
* 3. 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.
*/
int
ruserpass(const char *host, char **aname, char **apass, char **aacct)
{
char *tmp;
const char *mydomain;
char myname[MAXHOSTNAMELEN + 1];
int t, i, c, usedefault = 0;
struct stat stb;
if (netrc[0] == '\0')
return (0);
cfile = fopen(netrc, "r");
if (cfile == NULL) {
if (errno != ENOENT)
warn("Can't read `%s'", netrc);
return (0);
}
if (gethostname(myname, sizeof(myname)) < 0)
myname[0] = '\0';
myname[sizeof(myname) - 1] = '\0';
if ((mydomain = strchr(myname, '.')) == NULL)
mydomain = "";
next:
while ((t = token()) > 0) switch(t) {
case DEFAULT:
usedefault = 1;
/* FALL THROUGH */
case MACH:
if (!usedefault) {
if ((t = token()) == -1)
goto bad;
if (t != 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 (match_host_domain(hostname, mydomain, tokval))
goto match;
if (match_host_domain(host, mydomain, tokval))
goto match;
continue;
}
match:
while ((t = token()) > 0 &&
t != MACH && t != DEFAULT) switch(t) {
case LOGIN:
if ((t = token()) == -1)
goto bad;
if (t) {
if (*aname == NULL)
*aname = ftp_strdup(tokval);
else {
if (strcmp(*aname, tokval))
goto next;
}
}
break;
case PASSWD:
if ((*aname == NULL || 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 ((t = token()) == -1)
goto bad;
if (t && *apass == NULL)
*apass = ftp_strdup(tokval);
break;
case ACCOUNT:
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 ((t = token()) == -1)
goto bad;
if (t && *aacct == NULL)
*aacct = ftp_strdup(tokval);
break;
case MACDEF:
if (proxy) {
(void)fclose(cfile);
return (0);
}
while ((c = getc(cfile)) != EOF)
if (c != ' ' && c != '\t')
break;
if (c == EOF || c == '\n') {
fputs("Missing macdef name argument.\n",
ttyout);
goto bad;
}
if (macnum == 16) {
fputs(
"Limit of 16 macros have already been defined.\n",
ttyout);
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) {
fputs(
"Macro definition missing null line terminator.\n",
ttyout);
goto bad;
}
*tmp = '\0';
if (c != '\n') {
while ((c = getc(cfile)) != EOF && c != '\n');
}
if (c == EOF) {
fputs(
"Macro definition missing null line terminator.\n",
ttyout);
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) {
fputs(
"Macro definition missing null line terminator.\n",
ttyout);
goto bad;
}
*tmp = c;
if (*tmp == '\n') {
if (tmp == macros[macnum].mac_start) {
macros[macnum++].mac_end = tmp;
break;
} else if (*(tmp - 1) == '\0') {
macros[macnum++].mac_end =
tmp - 1;
break;
}
*tmp = '\0';
}
tmp++;
}
if (tmp == macbuf + 4096) {
fputs("4 KiB macro buffer exceeded.\n",
ttyout);
goto bad;
}
break;
default:
warnx("Unknown .netrc keyword `%s'", tokval);
break;
}
goto done;
}
done:
if (t == -1)
goto bad;
(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) || ferror(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 == '\\')
if ((c = getc(cfile)) == EOF)
break;
*cp++ = c;
if (cp == tokval + sizeof(tokval)) {
warnx("Token in .netrc too long");
return (-1);
}
}
} else {
*cp++ = c;
while ((c = getc(cfile)) != EOF
&& c != '\n' && c != '\t' && c != ' ' && c != ',') {
if (c == '\\')
if ((c = getc(cfile)) == EOF)
break;
*cp++ = c;
if (cp == tokval + sizeof(tokval)) {
warnx("Token in .netrc too long");
return (-1);
}
}
}
*cp = 0;
if (tokval[0] == 0)
return (0);
for (t = toktab; t->tokstr; t++)
if (!strcmp(t->tokstr, tokval))
return (t->tval);
return (ID);
}
