1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320
|
/*
* Copyright (c) 2009, Sun Microsystems, Inc.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* - Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* - 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.
* - Neither the name of Sun Microsystems, Inc. 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 COPYRIGHT HOLDERS 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 COPYRIGHT HOLDER 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.
*/
/*
* netname utility routines convert from unix names to network names and
* vice-versa This module is operating system dependent! What we define here
* will work with any unix system that has adopted the sun NIS domain
* architecture.
*/
#include <sys/param.h>
#include <rpc/rpc.h>
#include "rpc_com.h"
#ifdef YP
#include <rpcsvc/yp_prot.h>
#include <rpcsvc/ypclnt.h>
#endif
#include <ctype.h>
#include <stdio.h>
#include <grp.h>
#include <pwd.h>
#include <string.h>
#include <stdlib.h>
#include <unistd.h>
#include "debug.h"
static char *OPSYS = "unix";
static char *NETID = "netid.byname";
static char *NETIDFILE = "/etc/netid";
static int getnetid( char *, char * );
static int _getgroups( char *, gid_t * );
#ifndef NGROUPS
#define NGROUPS 16
#endif
/*
* Convert network-name into unix credential
*/
int
netname2user(netname, uidp, gidp, gidlenp, gidlist)
char netname[MAXNETNAMELEN + 1];
uid_t *uidp;
gid_t *gidp;
int *gidlenp;
gid_t *gidlist;
{
char *p;
int gidlen;
uid_t uid;
long luid;
struct passwd *pwd;
char val[1024];
char *val1, *val2;
char *domain;
int vallen;
int err;
if (getnetid(netname, val)) {
char *res = val;
p = strsep(&res, ":");
if (p == NULL)
return (0);
*uidp = (uid_t) atol(p);
p = strsep(&res, "\n,");
if (p == NULL) {
return (0);
}
*gidp = (gid_t) atol(p);
gidlen = 0;
for (gidlen = 0; gidlen < NGROUPS; gidlen++) {
p = strsep(&res, "\n,");
if (p == NULL)
break;
gidlist[gidlen] = (gid_t) atol(p);
}
*gidlenp = gidlen;
return (1);
}
val1 = strchr(netname, '.');
if (val1 == NULL)
return (0);
if (strncmp(netname, OPSYS, (val1-netname)))
return (0);
val1++;
val2 = strchr(val1, '@');
if (val2 == NULL)
return (0);
vallen = val2 - val1;
if (vallen > (1024 - 1))
vallen = 1024 - 1;
(void) strncpy(val, val1, 1024);
val[vallen] = 0;
err = __rpc_get_default_domain(&domain); /* change to rpc */
if (err)
return (0);
if (strcmp(val2 + 1, domain))
return (0); /* wrong domain */
if (sscanf(val, "%ld", &luid) != 1)
return (0);
uid = luid;
/* use initgroups method */
pwd = getpwuid(uid);
if (pwd == NULL)
return (0);
*uidp = pwd->pw_uid;
*gidp = pwd->pw_gid;
*gidlenp = _getgroups(pwd->pw_name, gidlist);
return (1);
}
/*
* initgroups
*/
static int
_getgroups(uname, groups)
char *uname;
gid_t groups[NGROUPS];
{
gid_t ngroups = 0;
struct group *grp;
int i;
int j;
int filter;
setgrent();
while ((grp = getgrent())) {
for (i = 0; grp->gr_mem[i]; i++)
if (!strcmp(grp->gr_mem[i], uname)) {
if (ngroups == NGROUPS) {
LIBTIRPC_DEBUG(1,
("_getgroups: %s is in too many groups\n", uname));
goto toomany;
}
/* filter out duplicate group entries */
filter = 0;
for (j = 0; j < ngroups; j++)
if (groups[j] == grp->gr_gid) {
filter++;
break;
}
if (!filter)
groups[ngroups++] = grp->gr_gid;
}
}
toomany:
endgrent();
return (ngroups);
}
/*
* Convert network-name to hostname
*/
int
netname2host(netname, hostname, hostlen)
char netname[MAXNETNAMELEN + 1];
char *hostname;
int hostlen;
{
int err;
char valbuf[1024];
char *val;
char *val2;
int vallen;
char *domain;
if (getnetid(netname, valbuf)) {
val = valbuf;
if ((*val == '0') && (val[1] == ':')) {
(void) strncpy(hostname, val + 2, hostlen);
return (1);
}
}
val = strchr(netname, '.');
if (val == NULL)
return (0);
if (strncmp(netname, OPSYS, (val - netname)))
return (0);
val++;
val2 = strchr(val, '@');
if (val2 == NULL)
return (0);
vallen = val2 - val;
if (vallen > (hostlen - 1))
vallen = hostlen - 1;
(void) strncpy(hostname, val, vallen);
hostname[vallen] = 0;
err = __rpc_get_default_domain(&domain); /* change to rpc */
if (err)
return (0);
if (strcmp(val2 + 1, domain))
return (0); /* wrong domain */
else
return (1);
}
/*
* reads the file /etc/netid looking for a + to optionally go to the
* network information service.
*/
int
getnetid(key, ret)
char *key, *ret;
{
char buf[1024]; /* big enough */
char *res;
char *mkey;
char *mval;
FILE *fd;
#ifdef YP
char *domain;
int err;
char *lookup;
int len;
#endif
fd = fopen(NETIDFILE, "r");
if (fd == NULL) {
#ifdef YP
res = "+";
goto getnetidyp;
#else
return (0);
#endif
}
for (;;) {
if (fd == NULL)
return (0); /* getnetidyp brings us here */
res = fgets(buf, sizeof(buf), fd);
if (res == NULL) {
fclose(fd);
return (0);
}
if (res[0] == '#')
continue;
else if (res[0] == '+') {
#ifdef YP
getnetidyp:
err = yp_get_default_domain(&domain);
if (err) {
continue;
}
lookup = NULL;
err = yp_match(domain, NETID, key,
strlen(key), &lookup, &len);
if (err) {
LIBTIRPC_DEBUG(1, ("getnetid: match failed error %d", err));
continue;
}
lookup[len] = 0;
strcpy(ret, lookup);
free(lookup);
if (fd != NULL)
fclose(fd);
return (2);
#else /* YP */
LIBTIRPC_DEBUG(1,
("Bad record in %s '+' -- NIS not supported in this library copy\n",
NETIDFILE));
continue;
#endif /* YP */
} else {
mkey = strsep(&res, "\t ");
if (mkey == NULL) {
fprintf(stderr,
"Bad record in %s -- %s", NETIDFILE, buf);
continue;
}
do {
mval = strsep(&res, " \t#\n");
} while (mval != NULL && !*mval);
if (mval == NULL) {
fprintf(stderr,
"Bad record in %s val problem - %s", NETIDFILE, buf);
continue;
}
if (strcmp(mkey, key) == 0) {
strcpy(ret, mval);
fclose(fd);
return (1);
}
}
}
}
|