usr.sbin/pw/pw_vpw.c

   1 /*-
   2  * Copyright (C) 1996
   3  *      David L. Nugent.  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  *
  14  * THIS SOFTWARE IS PROVIDED BY DAVID L. NUGENT AND CONTRIBUTORS ``AS IS'' AND
  15  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  16  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  17  * ARE DISCLAIMED.  IN NO EVENT SHALL DAVID L. NUGENT OR CONTRIBUTORS BE LIABLE
  18  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  19  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  20  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  21  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  22  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  23  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  24  * SUCH DAMAGE.
  25  *
  26  */
  27
  28 #ifndef lint
  29 static const char rcsid[] =
  30   "$FreeBSD: src/usr.sbin/pw/pw_vpw.c,v 1.3 2000/01/15 00:20:21 davidn Exp $";
  31 #endif /* not lint */
  32
  33 #include <stdio.h>
  34 #include <string.h>
  35 #include <stdlib.h>
  36 #include <sys/param.h>
  37
  38 #include "pwupd.h"
  39
  40 static FILE * pwd_fp = NULL;
  41
  42 void
  43 vendpwent(void)
  44 {
  45         if (pwd_fp != NULL) {
  46                 fclose(pwd_fp);
  47                 pwd_fp = NULL;
  48         }
  49 }
  50
  51 void
  52 vsetpwent(void)
  53 {
  54         vendpwent();
  55 }
  56
  57 static struct passwd *
  58 vnextpwent(char const * nam, uid_t uid, int doclose)
  59 {
  60         struct passwd * pw = NULL;
  61         static char pwtmp[1024];
  62
  63         strncpy(pwtmp, getpwpath(_MASTERPASSWD), sizeof pwtmp);
  64         pwtmp[sizeof pwtmp - 1] = '\0';
  65
  66         if (pwd_fp != NULL || (pwd_fp = fopen(pwtmp, "r")) != NULL) {
  67                 int done = 0;
  68
  69                 static struct passwd pwd;
  70
  71                 while (!done && fgets(pwtmp, sizeof pwtmp, pwd_fp) != NULL)
  72                 {
  73                         int i, quickout = 0;
  74                         char * q;
  75                         char * p = strchr(pwtmp, '\n');
  76
  77                         if (p == NULL) {
  78                                 while (fgets(pwtmp, sizeof pwtmp, pwd_fp) != NULL && strchr(pwtmp, '\n')==NULL)
  79                                         ; /* Skip long lines */
  80                                 continue;
  81                         }
  82
  83                         /* skip comments & empty lines */
  84                         if (*pwtmp =='\n' || *pwtmp == '#')
  85                                 continue;
  86
  87                         i = 0;
  88                         q = p = pwtmp;
  89                         bzero(&pwd, sizeof pwd);
  90                         while (!quickout && (p = strsep(&q, ":\n")) != NULL) {
  91                                 switch (i++)
  92                                 {
  93                                 case 0:   /* username */
  94                                         pwd.pw_name = p;
  95                                         if (nam) {
  96                                                 if (strcmp(nam, p) == 0)
  97                                                         done = 1;
  98                                                 else
  99                                                         quickout = 1;
 100                                         }
 101                                         break;
 102                                 case 1:   /* password */
 103                                         pwd.pw_passwd = p;
 104                                         break;
 105                                 case 2:   /* uid */
 106                                         pwd.pw_uid = atoi(p);
 107                                         if (uid != (uid_t)-1) {
 108                                                 if (uid == pwd.pw_uid)
 109                                                         done = 1;
 110                                                 else
 111                                                         quickout = 1;
 112                                         }
 113                                         break;
 114                                 case 3:   /* gid */
 115                                         pwd.pw_gid = atoi(p);
 116                                         break;
 117                                 case 4:   /* class */
 118                                         if (nam == NULL && uid == (uid_t)-1)
 119                                                 done = 1;
 120                                         pwd.pw_class = p;
 121                                         break;
 122                                 case 5:   /* change */
 123                                         pwd.pw_change = (time_t)atol(p);
 124                                         break;
 125                                 case 6:   /* expire */
 126                                         pwd.pw_expire = (time_t)atol(p);
 127                                         break;
 128                                 case 7:   /* gecos */
 129                                         pwd.pw_gecos = p;
 130                                         break;
 131                                 case 8:   /* directory */
 132                                         pwd.pw_dir = p;
 133                                         break;
 134                                 case 9:   /* shell */
 135                                         pwd.pw_shell = p;
 136                                         break;
 137                                 }
 138                         }
 139                 }
 140                 if (doclose)
 141                         vendpwent();
 142                 if (done && pwd.pw_name) {
 143                         pw = &pwd;
 144
 145                         #define CKNULL(s)   s = s ? s : ""
 146                         CKNULL(pwd.pw_passwd);
 147                         CKNULL(pwd.pw_class);
 148                         CKNULL(pwd.pw_gecos);
 149                         CKNULL(pwd.pw_dir);
 150                         CKNULL(pwd.pw_shell);
 151                 }
 152         }
 153         return pw;
 154 }
 155
 156 struct passwd *
 157 vgetpwent(void)
 158 {
 159   return vnextpwent(NULL, -1, 0);
 160 }
 161
 162 struct passwd *
 163 vgetpwuid(uid_t uid)
 164 {
 165   return vnextpwent(NULL, uid, 1);
 166 }
 167
 168 struct passwd *
 169 vgetpwnam(const char * nam)
 170 {
 171   return vnextpwent(nam, -1, 1);
 172 }
 173
 174 int vpwdb(char *arg, ...)
 175 {
 176   arg=arg;
 177   return 0;
 178 }
 179
 180
 181
 182 static FILE * grp_fp = NULL;
 183
 184 void
 185 vendgrent(void)
 186 {
 187         if (grp_fp != NULL) {
 188                 fclose(grp_fp);
 189                 grp_fp = NULL;
 190         }
 191 }
 192
 193 RET_SETGRENT
 194 vsetgrent(void)
 195 {
 196         vendgrent();
 197 #if defined(__FreeBSD__)
 198         return 0;
 199 #endif
 200 }
 201
 202 static struct group *
 203 vnextgrent(char const * nam, gid_t gid, int doclose)
 204 {
 205         struct group * gr = NULL;
 206
 207         static char * grtmp = NULL;
 208         static int grlen = 0;
 209         static char ** mems = NULL;
 210         static int memlen = 0;
 211
 212         extendline(&grtmp, &grlen, MAXPATHLEN);
 213         strncpy(grtmp, getgrpath(_GROUP), MAXPATHLEN);
 214         grtmp[MAXPATHLEN - 1] = '\0';
 215
 216         if (grp_fp != NULL || (grp_fp = fopen(grtmp, "r")) != NULL) {
 217                 int done = 0;
 218
 219                 static struct group grp;
 220
 221                 while (!done && fgets(grtmp, grlen, grp_fp) != NULL)
 222                 {
 223                         int i, quickout = 0;
 224                         int mno = 0;
 225                         char * q, * p;
 226                         char * sep = ":\n";
 227
 228                         if ((p = strchr(grtmp, '\n')) == NULL) {
 229                                 int l;
 230                                 extendline(&grtmp, &grlen, grlen + PWBUFSZ);
 231                                 l = strlen(grtmp);
 232                                 if (fgets(grtmp + l, grlen - l, grp_fp) == NULL)
 233                                   break;        /* No newline terminator on last line */
 234                         }
 235                         /* Skip comments and empty lines */
 236                         if (*grtmp == '\n' || *grtmp == '#')
 237                                 continue;
 238                         i = 0;
 239                         q = p = grtmp;
 240                         bzero(&grp, sizeof grp);
 241                         extendarray(&mems, &memlen, 200);
 242                         while (!quickout && (p = strsep(&q, sep)) != NULL) {
 243                                 switch (i++)
 244                                 {
 245                                 case 0:   /* groupname */
 246                                         grp.gr_name = p;
 247                                         if (nam) {
 248                                                 if (strcmp(nam, p) == 0)
 249                                                         done = 1;
 250                                                 else
 251                                                         quickout = 1;
 252                                         }
 253                                         break;
 254                                 case 1:   /* password */
 255                                         grp.gr_passwd = p;
 256                                         break;
 257                                 case 2:   /* gid */
 258                                         grp.gr_gid = atoi(p);
 259                                         if (gid != (gid_t)-1) {
 260                                                 if (gid == (gid_t)grp.gr_gid)
 261                                                         done = 1;
 262                                                 else
 263                                                         quickout = 1;
 264                                         } else if (nam == NULL)
 265                                                 done = 1;
 266                                         break;
 267                                 case 3:
 268                                         q = p;
 269                                         sep = ",\n";
 270                                         break;
 271                                 default:
 272                                         if (*p) {
 273                                                 extendarray(&mems, &memlen, mno + 2);
 274                                                 mems[mno++] = p;
 275                                         }
 276                                         break;
 277                                 }
 278                         }
 279                         grp.gr_mem = mems;
 280                         mems[mno] = NULL;
 281                 }
 282                 if (doclose)
 283                         vendgrent();
 284                 if (done && grp.gr_name) {
 285                         gr = &grp;
 286
 287                         CKNULL(grp.gr_passwd);
 288                 }
 289         }
 290         return gr;
 291 }
 292
 293 struct group *
 294 vgetgrent(void)
 295 {
 296   return vnextgrent(NULL, -1, 0);
 297 }
 298
 299
 300 struct group *
 301 vgetgrgid(gid_t gid)
 302 {
 303   return vnextgrent(NULL, gid, 1);
 304 }
 305
 306 struct group *
 307 vgetgrnam(const char * nam)
 308 {
 309   return vnextgrent(nam, -1, 1);
 310 }
 311
 312 int
 313 vgrdb(char *arg, ...)
 314 {
 315   arg=arg;
 316   return 0;
 317 }
 318