1*0Sstevel@tonic-gate /* 2*0Sstevel@tonic-gate * CDDL HEADER START 3*0Sstevel@tonic-gate * 4*0Sstevel@tonic-gate * The contents of this file are subject to the terms of the 5*0Sstevel@tonic-gate * Common Development and Distribution License, Version 1.0 only 6*0Sstevel@tonic-gate * (the "License"). You may not use this file except in compliance 7*0Sstevel@tonic-gate * with the License. 8*0Sstevel@tonic-gate * 9*0Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10*0Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing. 11*0Sstevel@tonic-gate * See the License for the specific language governing permissions 12*0Sstevel@tonic-gate * and limitations under the License. 13*0Sstevel@tonic-gate * 14*0Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each 15*0Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16*0Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the 17*0Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying 18*0Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner] 19*0Sstevel@tonic-gate * 20*0Sstevel@tonic-gate * CDDL HEADER END 21*0Sstevel@tonic-gate */ 22*0Sstevel@tonic-gate /* 23*0Sstevel@tonic-gate * Copyright 2004 Sun Microsystems, Inc. All rights reserved. 24*0Sstevel@tonic-gate * Use is subject to license terms. 25*0Sstevel@tonic-gate */ 26*0Sstevel@tonic-gate 27*0Sstevel@tonic-gate /* Copyright (c) 1983, 1984, 1985, 1986, 1987, 1988, 1989 AT&T */ 28*0Sstevel@tonic-gate /* All Rights Reserved */ 29*0Sstevel@tonic-gate 30*0Sstevel@tonic-gate /* 31*0Sstevel@tonic-gate * Portions of this source code were derived from Berkeley 32*0Sstevel@tonic-gate * under license from the Regents of the University of 33*0Sstevel@tonic-gate * California. 34*0Sstevel@tonic-gate */ 35*0Sstevel@tonic-gate 36*0Sstevel@tonic-gate #pragma ident "%Z%%M% %I% %E% SMI" 37*0Sstevel@tonic-gate 38*0Sstevel@tonic-gate /* 39*0Sstevel@tonic-gate * DESCRIPTION: This file contains various functions used by more than one NIS 40*0Sstevel@tonic-gate * components. A lot of this code started off in ypxfr and then 41*0Sstevel@tonic-gate * got used by other components. Some of it has become a little 42*0Sstevel@tonic-gate * 'quirky' and should probably be re-worked. 43*0Sstevel@tonic-gate */ 44*0Sstevel@tonic-gate 45*0Sstevel@tonic-gate #include <unistd.h> 46*0Sstevel@tonic-gate #include <syslog.h> 47*0Sstevel@tonic-gate #include <sys/mman.h> 48*0Sstevel@tonic-gate #include <thread.h> 49*0Sstevel@tonic-gate #include <synch.h> 50*0Sstevel@tonic-gate #include <stdarg.h> 51*0Sstevel@tonic-gate #include <ndbm.h> 52*0Sstevel@tonic-gate #include "../ypsym.h" 53*0Sstevel@tonic-gate #include "../ypdefs.h" 54*0Sstevel@tonic-gate #include "shim.h" 55*0Sstevel@tonic-gate 56*0Sstevel@tonic-gate USE_DBM 57*0Sstevel@tonic-gate 58*0Sstevel@tonic-gate /* 59*0Sstevel@tonic-gate * Globals 60*0Sstevel@tonic-gate */ 61*0Sstevel@tonic-gate 62*0Sstevel@tonic-gate /* 63*0Sstevel@tonic-gate * DESCRIPTION : Utility functions used by everything. 64*0Sstevel@tonic-gate */ 65*0Sstevel@tonic-gate bool check_map_existence(char *); 66*0Sstevel@tonic-gate void logprintf2(char *format, ...); 67*0Sstevel@tonic-gate 68*0Sstevel@tonic-gate /* 69*0Sstevel@tonic-gate * This checks to see if the source map files exist, then renames them to the 70*0Sstevel@tonic-gate * target names. This is a boolean function. The file names from.pag and 71*0Sstevel@tonic-gate * from.dir will be changed to to.pag and to.dir in the success case. 72*0Sstevel@tonic-gate * 73*0Sstevel@tonic-gate * Note: If the second of the two renames fails, yprename_map will try to 74*0Sstevel@tonic-gate * un-rename the first pair, and leave the world in the state it was on entry. 75*0Sstevel@tonic-gate * This might fail, too, though... 76*0Sstevel@tonic-gate * 77*0Sstevel@tonic-gate * GIVEN : Name of map to copy from 78*0Sstevel@tonic-gate * Name of map to copy to 79*0Sstevel@tonic-gate * Flag indicating if map is secure. 80*0Sstevel@tonic-gate */ 81*0Sstevel@tonic-gate bool 82*0Sstevel@tonic-gate rename_map(from, to, secure_map) 83*0Sstevel@tonic-gate char *from; 84*0Sstevel@tonic-gate char *to; 85*0Sstevel@tonic-gate bool_t secure_map; 86*0Sstevel@tonic-gate { 87*0Sstevel@tonic-gate char fromfile[MAXNAMLEN + 1]; 88*0Sstevel@tonic-gate char tofile[MAXNAMLEN + 1]; 89*0Sstevel@tonic-gate char savefile[MAXNAMLEN + 1]; 90*0Sstevel@tonic-gate 91*0Sstevel@tonic-gate if (!from || !to) { 92*0Sstevel@tonic-gate return (FALSE); 93*0Sstevel@tonic-gate } 94*0Sstevel@tonic-gate 95*0Sstevel@tonic-gate if (!check_map_existence(from)) { 96*0Sstevel@tonic-gate return (FALSE); 97*0Sstevel@tonic-gate } 98*0Sstevel@tonic-gate 99*0Sstevel@tonic-gate (void) strcpy(fromfile, from); 100*0Sstevel@tonic-gate (void) strcat(fromfile, dbm_pag); 101*0Sstevel@tonic-gate (void) strcpy(tofile, to); 102*0Sstevel@tonic-gate (void) strcat(tofile, dbm_pag); 103*0Sstevel@tonic-gate 104*0Sstevel@tonic-gate if (rename(fromfile, tofile)) { 105*0Sstevel@tonic-gate logprintf2("Can't mv %s to %s.\n", fromfile, 106*0Sstevel@tonic-gate tofile); 107*0Sstevel@tonic-gate return (FALSE); 108*0Sstevel@tonic-gate } 109*0Sstevel@tonic-gate 110*0Sstevel@tonic-gate (void) strcpy(savefile, tofile); 111*0Sstevel@tonic-gate (void) strcpy(fromfile, from); 112*0Sstevel@tonic-gate (void) strcat(fromfile, dbm_dir); 113*0Sstevel@tonic-gate (void) strcpy(tofile, to); 114*0Sstevel@tonic-gate (void) strcat(tofile, dbm_dir); 115*0Sstevel@tonic-gate 116*0Sstevel@tonic-gate if (rename(fromfile, tofile)) { 117*0Sstevel@tonic-gate logprintf2("Can't mv %s to %s.\n", fromfile, 118*0Sstevel@tonic-gate tofile); 119*0Sstevel@tonic-gate (void) strcpy(fromfile, from); 120*0Sstevel@tonic-gate (void) strcat(fromfile, dbm_pag); 121*0Sstevel@tonic-gate (void) strcpy(tofile, to); 122*0Sstevel@tonic-gate (void) strcat(tofile, dbm_pag); 123*0Sstevel@tonic-gate 124*0Sstevel@tonic-gate if (rename(tofile, fromfile)) { 125*0Sstevel@tonic-gate logprintf2( 126*0Sstevel@tonic-gate "Can't recover from rename failure.\n"); 127*0Sstevel@tonic-gate return (FALSE); 128*0Sstevel@tonic-gate } 129*0Sstevel@tonic-gate 130*0Sstevel@tonic-gate return (FALSE); 131*0Sstevel@tonic-gate } 132*0Sstevel@tonic-gate 133*0Sstevel@tonic-gate if (!secure_map) { 134*0Sstevel@tonic-gate chmod(savefile, 0644); 135*0Sstevel@tonic-gate chmod(tofile, 0644); 136*0Sstevel@tonic-gate } 137*0Sstevel@tonic-gate 138*0Sstevel@tonic-gate return (TRUE); 139*0Sstevel@tonic-gate } 140*0Sstevel@tonic-gate 141*0Sstevel@tonic-gate /* 142*0Sstevel@tonic-gate * Function : delete_map() 143*0Sstevel@tonic-gate * 144*0Sstevel@tonic-gate * Description: Deletes a map 145*0Sstevel@tonic-gate * 146*0Sstevel@tonic-gate * Given : Map name 147*0Sstevel@tonic-gate * 148*0Sstevel@tonic-gate * Return : TRUE = Map deleted 149*0Sstevel@tonic-gate * FALSE = Map not completly deleted 150*0Sstevel@tonic-gate */ 151*0Sstevel@tonic-gate bool 152*0Sstevel@tonic-gate delete_map(name) 153*0Sstevel@tonic-gate char *name; 154*0Sstevel@tonic-gate { 155*0Sstevel@tonic-gate char fromfile[MAXNAMLEN + 1]; 156*0Sstevel@tonic-gate 157*0Sstevel@tonic-gate if (!name) { 158*0Sstevel@tonic-gate return (FALSE); 159*0Sstevel@tonic-gate } 160*0Sstevel@tonic-gate 161*0Sstevel@tonic-gate if (!check_map_existence(name)) { 162*0Sstevel@tonic-gate /* Already gone */ 163*0Sstevel@tonic-gate return (TRUE); 164*0Sstevel@tonic-gate } 165*0Sstevel@tonic-gate 166*0Sstevel@tonic-gate (void) strcpy(fromfile, name); 167*0Sstevel@tonic-gate (void) strcat(fromfile, dbm_pag); 168*0Sstevel@tonic-gate 169*0Sstevel@tonic-gate if (unlink(fromfile)) { 170*0Sstevel@tonic-gate logprintf2("Can't unlink %s.\n", fromfile); 171*0Sstevel@tonic-gate return (FALSE); 172*0Sstevel@tonic-gate } 173*0Sstevel@tonic-gate 174*0Sstevel@tonic-gate (void) strcpy(fromfile, name); 175*0Sstevel@tonic-gate (void) strcat(fromfile, dbm_dir); 176*0Sstevel@tonic-gate 177*0Sstevel@tonic-gate if (unlink(fromfile)) { 178*0Sstevel@tonic-gate logprintf2("Can't unlink %s.\n", fromfile); 179*0Sstevel@tonic-gate return (FALSE); 180*0Sstevel@tonic-gate } 181*0Sstevel@tonic-gate 182*0Sstevel@tonic-gate return (TRUE); 183*0Sstevel@tonic-gate } 184*0Sstevel@tonic-gate 185*0Sstevel@tonic-gate /* 186*0Sstevel@tonic-gate * This performs an existence check on the dbm data base files <pname>.pag and 187*0Sstevel@tonic-gate * <pname>.dir. 188*0Sstevel@tonic-gate */ 189*0Sstevel@tonic-gate bool 190*0Sstevel@tonic-gate check_map_existence(pname) 191*0Sstevel@tonic-gate char *pname; 192*0Sstevel@tonic-gate { 193*0Sstevel@tonic-gate char dbfile[MAXNAMLEN + 1]; 194*0Sstevel@tonic-gate struct stat filestat; 195*0Sstevel@tonic-gate int len; 196*0Sstevel@tonic-gate 197*0Sstevel@tonic-gate if (!pname || ((len = strlen(pname)) == 0) || 198*0Sstevel@tonic-gate (len + 5) > (MAXNAMLEN + 1)) { 199*0Sstevel@tonic-gate return (FALSE); 200*0Sstevel@tonic-gate } 201*0Sstevel@tonic-gate 202*0Sstevel@tonic-gate errno = 0; 203*0Sstevel@tonic-gate (void) strcpy(dbfile, pname); 204*0Sstevel@tonic-gate (void) strcat(dbfile, dbm_dir); 205*0Sstevel@tonic-gate 206*0Sstevel@tonic-gate if (stat(dbfile, &filestat) != -1) { 207*0Sstevel@tonic-gate (void) strcpy(dbfile, pname); 208*0Sstevel@tonic-gate (void) strcat(dbfile, dbm_pag); 209*0Sstevel@tonic-gate 210*0Sstevel@tonic-gate if (stat(dbfile, &filestat) != -1) { 211*0Sstevel@tonic-gate return (TRUE); 212*0Sstevel@tonic-gate } else { 213*0Sstevel@tonic-gate 214*0Sstevel@tonic-gate if (errno != ENOENT) { 215*0Sstevel@tonic-gate logprintf2( 216*0Sstevel@tonic-gate "Stat error on map file %s.\n", 217*0Sstevel@tonic-gate dbfile); 218*0Sstevel@tonic-gate } 219*0Sstevel@tonic-gate 220*0Sstevel@tonic-gate return (FALSE); 221*0Sstevel@tonic-gate } 222*0Sstevel@tonic-gate 223*0Sstevel@tonic-gate } else { 224*0Sstevel@tonic-gate 225*0Sstevel@tonic-gate if (errno != ENOENT) { 226*0Sstevel@tonic-gate logprintf2( 227*0Sstevel@tonic-gate "Stat error on map file %s.\n", 228*0Sstevel@tonic-gate dbfile); 229*0Sstevel@tonic-gate } 230*0Sstevel@tonic-gate 231*0Sstevel@tonic-gate return (FALSE); 232*0Sstevel@tonic-gate } 233*0Sstevel@tonic-gate } 234*0Sstevel@tonic-gate 235*0Sstevel@tonic-gate /* 236*0Sstevel@tonic-gate * FUNCTION : logprintf2() 237*0Sstevel@tonic-gate * 238*0Sstevel@tonic-gate * DESCRIPTION: The functions in this file were oringinaly shared between 239*0Sstevel@tonic-gate * ypxfr and ypserv. On error they called logprintf(). 240*0Sstevel@tonic-gate * Unfortunatly this had been implemented differently in the two 241*0Sstevel@tonic-gate * sources and not at all in some of the NIS components required 242*0Sstevel@tonic-gate * for N2L. 243*0Sstevel@tonic-gate * 244*0Sstevel@tonic-gate * This function is simplified version of logprinf() as/when 245*0Sstevel@tonic-gate * possible the other error calls should be migrated to use this 246*0Sstevel@tonic-gate * common version. If a common set of functionality can be found 247*0Sstevel@tonic-gate * this versions should be modified to support it. 248*0Sstevel@tonic-gate */ 249*0Sstevel@tonic-gate void 250*0Sstevel@tonic-gate logprintf2(char *format, ...) 251*0Sstevel@tonic-gate { 252*0Sstevel@tonic-gate va_list ap; 253*0Sstevel@tonic-gate 254*0Sstevel@tonic-gate va_start(ap, format); 255*0Sstevel@tonic-gate 256*0Sstevel@tonic-gate syslog(LOG_ERR, format, ap); 257*0Sstevel@tonic-gate 258*0Sstevel@tonic-gate va_end(ap); 259*0Sstevel@tonic-gate } 260*0Sstevel@tonic-gate 261*0Sstevel@tonic-gate /* 262*0Sstevel@tonic-gate * This performs an existence check on the dbm data base files <name>.pag and 263*0Sstevel@tonic-gate * <name>.dir. pname is a ptr to the filename. This should be an absolute 264*0Sstevel@tonic-gate * path. 265*0Sstevel@tonic-gate * Returns TRUE if the map exists and is accessable; else FALSE. 266*0Sstevel@tonic-gate * 267*0Sstevel@tonic-gate * Note: The file name should be a "base" form, without a file "extension" of 268*0Sstevel@tonic-gate * .dir or .pag appended. See ypmkfilename for a function which will generate 269*0Sstevel@tonic-gate * the name correctly. Errors in the stat call will be reported at this level, 270*0Sstevel@tonic-gate * however, the non-existence of a file is not considered an error, and so will 271*0Sstevel@tonic-gate * not be reported. 272*0Sstevel@tonic-gate */ 273*0Sstevel@tonic-gate bool 274*0Sstevel@tonic-gate ypcheck_map_existence(char *pname) 275*0Sstevel@tonic-gate { 276*0Sstevel@tonic-gate char dbfile[MAXNAMLEN + sizeof (TTL_POSTFIX) + 1]; 277*0Sstevel@tonic-gate struct stat filestat; 278*0Sstevel@tonic-gate int len; 279*0Sstevel@tonic-gate 280*0Sstevel@tonic-gate if (!pname || ((len = (int)strlen(pname)) == 0) || 281*0Sstevel@tonic-gate (len + sizeof (dbm_pag)) > (MAXNAMLEN + 1)) { 282*0Sstevel@tonic-gate return (FALSE); 283*0Sstevel@tonic-gate } 284*0Sstevel@tonic-gate 285*0Sstevel@tonic-gate errno = 0; 286*0Sstevel@tonic-gate 287*0Sstevel@tonic-gate /* Check for existance of .dir file */ 288*0Sstevel@tonic-gate (void) strcpy(dbfile, pname); 289*0Sstevel@tonic-gate (void) strcat(dbfile, dbm_dir); 290*0Sstevel@tonic-gate 291*0Sstevel@tonic-gate if (stat(dbfile, &filestat) == -1) { 292*0Sstevel@tonic-gate if (errno != ENOENT) { 293*0Sstevel@tonic-gate (void) fprintf(stderr, 294*0Sstevel@tonic-gate "ypserv: Stat error on map file %s.\n", 295*0Sstevel@tonic-gate dbfile); 296*0Sstevel@tonic-gate } 297*0Sstevel@tonic-gate return (FALSE); 298*0Sstevel@tonic-gate } 299*0Sstevel@tonic-gate 300*0Sstevel@tonic-gate /* Check for existance of .pag file */ 301*0Sstevel@tonic-gate (void) strcpy(dbfile, pname); 302*0Sstevel@tonic-gate (void) strcat(dbfile, dbm_pag); 303*0Sstevel@tonic-gate 304*0Sstevel@tonic-gate if (stat(dbfile, &filestat) == -1) { 305*0Sstevel@tonic-gate if (errno != ENOENT) { 306*0Sstevel@tonic-gate (void) fprintf(stderr, 307*0Sstevel@tonic-gate "ypserv: Stat error on map file %s.\n", 308*0Sstevel@tonic-gate dbfile); 309*0Sstevel@tonic-gate } 310*0Sstevel@tonic-gate return (FALSE); 311*0Sstevel@tonic-gate } 312*0Sstevel@tonic-gate 313*0Sstevel@tonic-gate if (yptol_mode) { 314*0Sstevel@tonic-gate /* Check for existance of TTL .dir file */ 315*0Sstevel@tonic-gate (void) strcpy(dbfile, pname); 316*0Sstevel@tonic-gate (void) strcat(dbfile, TTL_POSTFIX); 317*0Sstevel@tonic-gate (void) strcat(dbfile, dbm_dir); 318*0Sstevel@tonic-gate 319*0Sstevel@tonic-gate if (stat(dbfile, &filestat) == -1) { 320*0Sstevel@tonic-gate if (errno != ENOENT) { 321*0Sstevel@tonic-gate (void) fprintf(stderr, 322*0Sstevel@tonic-gate "ypserv: Stat error on map file %s.\n", 323*0Sstevel@tonic-gate dbfile); 324*0Sstevel@tonic-gate } 325*0Sstevel@tonic-gate return (FALSE); 326*0Sstevel@tonic-gate } 327*0Sstevel@tonic-gate 328*0Sstevel@tonic-gate /* Check for existance of TTL .pag file */ 329*0Sstevel@tonic-gate (void) strcpy(dbfile, pname); 330*0Sstevel@tonic-gate (void) strcat(dbfile, TTL_POSTFIX); 331*0Sstevel@tonic-gate (void) strcat(dbfile, dbm_pag); 332*0Sstevel@tonic-gate 333*0Sstevel@tonic-gate if (stat(dbfile, &filestat) == -1) { 334*0Sstevel@tonic-gate if (errno != ENOENT) { 335*0Sstevel@tonic-gate (void) fprintf(stderr, 336*0Sstevel@tonic-gate "ypserv: Stat error on map file %s.\n", 337*0Sstevel@tonic-gate dbfile); 338*0Sstevel@tonic-gate } 339*0Sstevel@tonic-gate return (FALSE); 340*0Sstevel@tonic-gate } 341*0Sstevel@tonic-gate } 342*0Sstevel@tonic-gate 343*0Sstevel@tonic-gate return (TRUE); 344*0Sstevel@tonic-gate } 345