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/* $OpenBSD: mknetid.c,v 1.22 2015/02/09 23:00:15 deraadt Exp $ */ |
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/* |
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* Copyright (c) 1996 Mats O Jansson <moj@stacken.kth.se> |
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* All rights reserved. |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions |
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* are met: |
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* 1. Redistributions of source code must retain the above copyright |
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* notice, this list of conditions and the following disclaimer. |
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* 2. Redistributions in binary form must reproduce the above copyright |
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* notice, this list of conditions and the following disclaimer in the |
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* documentation and/or other materials provided with the distribution. |
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* |
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS |
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* OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED |
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY |
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
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* SUCH DAMAGE. |
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*/ |
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#include <stdio.h> |
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#include <unistd.h> |
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#include <ctype.h> |
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#include <string.h> |
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#include <stdlib.h> |
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#include <pwd.h> |
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#include <grp.h> |
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#include <err.h> |
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#include <netdb.h> |
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#include <limits.h> |
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#include <rpcsvc/ypclnt.h> |
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struct user { |
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char *usr_name; /* user name */ |
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int usr_uid; /* user uid */ |
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int usr_gid; /* user gid */ |
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int gid_count; /* number of gids */ |
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int gid[NGROUPS_MAX]; /* additional gids */ |
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struct user *prev, *next; /* links in read order */ |
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struct user *hprev, *hnext; /* links in hash order */ |
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}; |
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char *HostFile = _PATH_HOSTS; |
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char *PasswdFile = _PATH_PASSWD; |
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char *MasterPasswdFile = _PATH_MASTERPASSWD; |
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char *GroupFile = _PATH_GROUP; |
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char *NetidFile = "/etc/netid"; |
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#define HASHMAX 55 |
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struct user *root = NULL, *tail = NULL; |
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struct user *hroot[HASHMAX], *htail[HASHMAX]; |
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static int |
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read_line(FILE *fp, char *buf, int size) |
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{ |
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int done = 0; |
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do { |
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while (fgets(buf, size, fp)) { |
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int len = strlen(buf); |
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done += len; |
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if (len > 1 && buf[len-2] == '\\' && |
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buf[len-1] == '\n') { |
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int ch; |
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buf += len - 2; |
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size -= len - 2; |
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*buf = '\n'; buf[1] = '\0'; |
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/* |
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* Skip leading white space on next line |
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*/ |
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while ((ch = getc(fp)) != EOF && |
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isascii(ch) && isspace(ch)) |
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; |
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(void) ungetc(ch, fp); |
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} else { |
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return done; |
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} |
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} |
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} while (size > 0 && !feof(fp)); |
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return done; |
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} |
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static int |
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hashidx(char key) |
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{ |
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if (key < 'A') |
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return (0); |
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if (key <= 'Z') |
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return (1 + key - 'A'); |
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if (key < 'a') |
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return (27); |
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if (key <= 'z') |
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return (28 + key - 'a'); |
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return (54); |
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} |
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static void |
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add_user(char *username, char *uid, char *gid) |
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{ |
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struct user *u; |
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int idx; |
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u = malloc(sizeof(struct user)); |
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if (u == NULL) |
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err(1, "malloc"); |
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bzero(u, sizeof(struct user)); |
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u->usr_name = strdup(username); |
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if (u->usr_name == NULL) |
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err(1, "strdup"); |
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u->usr_uid = atoi(uid); |
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u->usr_gid = atoi(gid); |
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u->gid_count = -1; |
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if (root == NULL) { |
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root = tail = u; |
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} else { |
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u->prev = tail; |
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tail->next = u; |
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tail = u; |
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} |
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idx = hashidx(username[0]); |
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if (hroot[idx] == NULL) { |
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hroot[idx] = htail[idx] = u; |
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} else { |
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u->hprev = htail[idx]; |
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htail[idx]->hnext = u; |
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htail[idx] = u; |
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} |
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} |
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static void |
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add_group(char *username, char *gid) |
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{ |
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struct user *u; |
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int idx, g; |
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idx = hashidx(username[0]); |
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u = hroot[idx]; |
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g = atoi(gid); |
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while (u != NULL) { |
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if (strcmp(username, u->usr_name) == 0) { |
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if (g != u->usr_gid) { |
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u->gid_count++; |
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if (u->gid_count < NGROUPS_MAX) |
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u->gid[u->gid_count] = atoi(gid); |
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} |
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u = htail[idx]; |
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} |
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u = u->hnext; |
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} |
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} |
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static void |
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read_passwd(FILE *pfile, char *fname) |
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{ |
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char line[1024], *p, *k, *u, *g; |
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int line_no = 0, len, colon; |
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while (read_line(pfile, line, sizeof(line))) { |
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line_no++; |
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len = strlen(line); |
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if (len > 0) { |
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if (line[0] == '#') |
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continue; |
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} |
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/* |
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* Check if we have the whole line |
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*/ |
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if (line[len-1] != '\n') { |
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fprintf(stderr, "line %d in \"%s\" is too long\n", |
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line_no, fname); |
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} else { |
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line[len-1] = '\0'; |
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} |
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p = (char *)&line; |
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k = p; colon = 0; |
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while (*k != '\0') { |
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if (*k == ':') |
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colon++; |
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k++; |
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} |
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if (colon > 0) { |
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k = p; /* save start of key */ |
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while (*p != ':') |
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p++; /* find first "colon" */ |
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if (*p==':') |
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*p++ = '\0'; /* terminate key */ |
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if (strlen(k) == 1) { |
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if (*k == '+') |
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continue; |
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} |
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} |
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if (colon < 4) { |
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fprintf(stderr, "syntax error at line %d in \"%s\"\n", |
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line_no, fname); |
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continue; |
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} |
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while (*p != ':') |
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p++; /* find second "colon" */ |
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if (*p==':') |
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*p++ = '\0'; /* terminate passwd */ |
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u = p; |
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while (*p != ':') |
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p++; /* find third "colon" */ |
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if (*p==':') |
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*p++ = '\0'; /* terminate uid */ |
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g = p; |
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while (*p != ':') |
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p++; /* find fourth "colon" */ |
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if (*p==':') |
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*p++ = '\0'; /* terminate gid */ |
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while (*p != '\0') |
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p++; /* find end of string */ |
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add_user(k, u, g); |
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} |
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} |
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static int |
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isgsep(char ch) |
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{ |
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switch (ch) { |
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case ',': |
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case ' ': |
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case '\t': |
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case '\0': |
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return (1); |
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default: |
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return (0); |
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} |
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} |
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static void |
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read_group(FILE *gfile, char *fname) |
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{ |
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char line[2048], *p, *k, *u, *g; |
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int line_no = 0, len, colon; |
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while (read_line(gfile, line, sizeof(line))) { |
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line_no++; |
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len = strlen(line); |
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if (len > 0) { |
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if (line[0] == '#') |
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continue; |
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} |
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/* |
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* Check if we have the whole line |
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*/ |
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if (line[len-1] != '\n') { |
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fprintf(stderr, "line %d in \"%s\" is too long\n", |
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line_no, fname); |
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} else { |
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line[len-1] = '\0'; |
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} |
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p = (char *)&line; |
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k = p; colon = 0; |
282 |
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while (*k != '\0') { |
283 |
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if (*k == ':') |
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colon++; |
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k++; |
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} |
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288 |
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if (colon > 0) { |
289 |
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k = p; /* save start of key */ |
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while (*p != ':') |
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p++; /* find first "colon" */ |
292 |
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if (*p==':') |
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*p++ = '\0'; /* terminate key */ |
294 |
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if (strlen(k) == 1) { |
295 |
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if (*k == '+') |
296 |
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continue; |
297 |
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} |
298 |
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} |
299 |
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300 |
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if (colon < 3) { |
301 |
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fprintf(stderr, "syntax error at line %d in \"%s\"\n", |
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line_no, fname); |
303 |
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continue; |
304 |
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} |
305 |
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306 |
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while (*p != ':') |
307 |
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p++; /* find second "colon" */ |
308 |
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if (*p==':') |
309 |
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*p++ = '\0'; /* terminate passwd */ |
310 |
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g = p; |
311 |
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while (*p != ':') |
312 |
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p++; /* find third "colon" */ |
313 |
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if (*p==':') |
314 |
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*p++ = '\0'; /* terminate gid */ |
315 |
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316 |
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u = p; |
317 |
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318 |
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while (*u != '\0') { |
319 |
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while (!isgsep(*p)) |
320 |
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p++; /* find separator */ |
321 |
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if (*p != '\0') { |
322 |
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*p = '\0'; |
323 |
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if (u != p) |
324 |
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add_group(u, g); |
325 |
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p++; |
326 |
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} else { |
327 |
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if (u != p) |
328 |
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add_group(u, g); |
329 |
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} |
330 |
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u = p; |
331 |
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} |
332 |
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} |
333 |
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} |
334 |
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335 |
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static void |
336 |
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print_passwd_group(int qflag, char *domain) |
337 |
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{ |
338 |
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struct user *u, *p; |
339 |
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int i; |
340 |
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341 |
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u = root; |
342 |
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343 |
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while (u != NULL) { |
344 |
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p = root; |
345 |
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while (p->usr_uid != u->usr_uid) |
346 |
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p = p->next; |
347 |
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348 |
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if (p != u) { |
349 |
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if (!qflag) { |
350 |
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fprintf(stderr, "mknetid: unix.%d@%s %s\n", |
351 |
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u->usr_uid, domain, |
352 |
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"multiply defined, other definitions ignored"); |
353 |
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} |
354 |
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} else { |
355 |
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printf("unix.%d@%s %d:%d", |
356 |
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u->usr_uid, domain, u->usr_uid, u->usr_gid); |
357 |
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if (u->gid_count >= 0) { |
358 |
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i = 0; |
359 |
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while (i <= u->gid_count) { |
360 |
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printf(",%d", u->gid[i]); |
361 |
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i++; |
362 |
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} |
363 |
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} |
364 |
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printf("\n"); |
365 |
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} |
366 |
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u = u->next; |
367 |
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} |
368 |
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} |
369 |
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|
370 |
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static void |
371 |
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print_hosts(FILE *pfile, char *fname, char *domain) |
372 |
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{ |
373 |
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char line[1024], *p, *u; |
374 |
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int line_no = 0, len; |
375 |
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|
376 |
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while (read_line(pfile, line, sizeof(line))) { |
377 |
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line_no++; |
378 |
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len = strlen(line); |
379 |
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|
380 |
|
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if (len > 0) { |
381 |
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if (line[0] == '#') |
382 |
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continue; |
383 |
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} |
384 |
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|
385 |
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/* |
386 |
|
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* Check if we have the whole line |
387 |
|
|
*/ |
388 |
|
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if (line[len-1] != '\n') { |
389 |
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fprintf(stderr, "line %d in \"%s\" is too long\n", |
390 |
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line_no, fname); |
391 |
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} else { |
392 |
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line[len-1] = '\0'; |
393 |
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} |
394 |
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|
395 |
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p = (char *)&line; |
396 |
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|
397 |
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while (!isspace((unsigned char)*p)) |
398 |
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p++; /* find first "space" */ |
399 |
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while (isspace((unsigned char)*p)) |
400 |
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*p++ = '\0'; /* replace space with <NUL> */ |
401 |
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|
402 |
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u = p; |
403 |
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while (p != NULL) { |
404 |
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if (*p == '\0') { |
405 |
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p = NULL; |
406 |
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} else { |
407 |
|
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if (!isspace((unsigned char)*p)) { |
408 |
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p++; |
409 |
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} else { |
410 |
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*p = '\0'; |
411 |
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p = NULL; |
412 |
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} |
413 |
|
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} |
414 |
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} |
415 |
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|
416 |
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printf("unix.%s@%s 0:%s\n", u, domain, u); |
417 |
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} |
418 |
|
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} |
419 |
|
|
|
420 |
|
|
static void |
421 |
|
|
print_netid(FILE *mfile, char *fname) |
422 |
|
|
{ |
423 |
|
|
char line[1024], *p, *k, *u; |
424 |
|
|
int line_no = 0, len; |
425 |
|
|
|
426 |
|
|
while (read_line(mfile, line, sizeof(line))) { |
427 |
|
|
line_no++; |
428 |
|
|
len = strlen(line); |
429 |
|
|
|
430 |
|
|
if (len > 0) { |
431 |
|
|
if (line[0] == '#') |
432 |
|
|
continue; |
433 |
|
|
} |
434 |
|
|
|
435 |
|
|
/* |
436 |
|
|
* Check if we have the whole line |
437 |
|
|
*/ |
438 |
|
|
if (line[len-1] != '\n') { |
439 |
|
|
fprintf(stderr, "line %d in \"%s\" is too long\n", |
440 |
|
|
line_no, fname); |
441 |
|
|
} else { |
442 |
|
|
line[len-1] = '\0'; |
443 |
|
|
} |
444 |
|
|
|
445 |
|
|
p = (char *)&line; |
446 |
|
|
|
447 |
|
|
k = p; /* save start of key */ |
448 |
|
|
while (!isspace((unsigned char)*p)) |
449 |
|
|
p++; /* find first "space" */ |
450 |
|
|
while (isspace((unsigned char)*p)) |
451 |
|
|
*p++ = '\0'; /* replace space with <NUL> */ |
452 |
|
|
|
453 |
|
|
u = p; |
454 |
|
|
while (p != NULL) { |
455 |
|
|
if (*p == '\0') { |
456 |
|
|
p = NULL; |
457 |
|
|
} else { |
458 |
|
|
if (!isspace((unsigned char)*p)) { |
459 |
|
|
p++; |
460 |
|
|
} else { |
461 |
|
|
*p = '\0'; |
462 |
|
|
p = NULL; |
463 |
|
|
} |
464 |
|
|
} |
465 |
|
|
} |
466 |
|
|
|
467 |
|
|
printf("%s %s\n", k, u); |
468 |
|
|
} |
469 |
|
|
} |
470 |
|
|
|
471 |
|
|
static void |
472 |
|
|
usage(void) |
473 |
|
|
{ |
474 |
|
|
fprintf(stderr, "usage: mknetid [-q] [-d domain] [-g groupfile] " |
475 |
|
|
"[-h hostfile] [-m netidfile]\n" |
476 |
|
|
" [-P master.passwdfile] [-p passwdfile]\n"); |
477 |
|
|
exit(1); |
478 |
|
|
} |
479 |
|
|
|
480 |
|
|
int |
481 |
|
|
main(int argc, char *argv[]) |
482 |
|
|
{ |
483 |
|
|
FILE *pfile, *gfile, *hfile, *mfile; |
484 |
|
|
int qflag = 0, ch; |
485 |
|
|
char *domain = NULL; |
486 |
|
|
|
487 |
|
|
while ((ch = getopt(argc, argv, "d:g:h:m:p:P:q")) != -1) |
488 |
|
|
switch (ch) { |
489 |
|
|
case 'd': |
490 |
|
|
domain = optarg; |
491 |
|
|
break; |
492 |
|
|
case 'g': |
493 |
|
|
GroupFile = optarg; |
494 |
|
|
break; |
495 |
|
|
case 'h': |
496 |
|
|
HostFile = optarg; |
497 |
|
|
break; |
498 |
|
|
case 'm': |
499 |
|
|
NetidFile = optarg; |
500 |
|
|
break; |
501 |
|
|
case 'p': |
502 |
|
|
PasswdFile = optarg; |
503 |
|
|
break; |
504 |
|
|
case 'P': |
505 |
|
|
MasterPasswdFile = optarg; |
506 |
|
|
break; |
507 |
|
|
case 'q': |
508 |
|
|
qflag = 1; |
509 |
|
|
break; |
510 |
|
|
default: |
511 |
|
|
usage(); |
512 |
|
|
break; |
513 |
|
|
} |
514 |
|
|
|
515 |
|
|
if (argc > optind) |
516 |
|
|
usage(); |
517 |
|
|
|
518 |
|
|
if (domain == NULL) |
519 |
|
|
yp_get_default_domain(&domain); |
520 |
|
|
|
521 |
|
|
pfile = fopen(PasswdFile, "r"); |
522 |
|
|
if (pfile == NULL) |
523 |
|
|
pfile = fopen(MasterPasswdFile, "r"); |
524 |
|
|
if (pfile == NULL) |
525 |
|
|
err(1, "%s", MasterPasswdFile); |
526 |
|
|
|
527 |
|
|
gfile = fopen(GroupFile, "r"); |
528 |
|
|
if (gfile == NULL) |
529 |
|
|
err(1, "%s", GroupFile); |
530 |
|
|
|
531 |
|
|
hfile = fopen(HostFile, "r"); |
532 |
|
|
if (hfile == NULL) |
533 |
|
|
err(1, "%s", HostFile); |
534 |
|
|
|
535 |
|
|
mfile = fopen(NetidFile, "r"); |
536 |
|
|
|
537 |
|
|
read_passwd(pfile, PasswdFile); |
538 |
|
|
read_group(gfile, GroupFile); |
539 |
|
|
|
540 |
|
|
print_passwd_group(qflag, domain); |
541 |
|
|
print_hosts(hfile, HostFile, domain); |
542 |
|
|
|
543 |
|
|
if (mfile != NULL) |
544 |
|
|
print_netid(mfile, NetidFile); |
545 |
|
|
|
546 |
|
|
return 0; |
547 |
|
|
} |