Exemple #1
0
int
pw_group(struct userconf * cnf, int mode, struct cargs * args)
{
	int		rc;
	struct carg    *a_name = getarg(args, 'n');
	struct carg    *a_gid = getarg(args, 'g');
	struct carg    *arg;
	struct group   *grp = NULL;
	int	        grmembers = 0;
	char           **members = NULL;

	static struct group fakegroup =
	{
		"nogroup",
		"*",
		-1,
		NULL
	};

	if (mode == M_LOCK || mode == M_UNLOCK)
		errx(EX_USAGE, "'lock' command is not available for groups");

	/*
	 * With M_NEXT, we only need to return the
	 * next gid to stdout
	 */
	if (mode == M_NEXT) {
		gid_t next = gr_gidpolicy(cnf, args);
		if (getarg(args, 'q'))
			return next;
		printf("%ld\n", (long)next);
		return EXIT_SUCCESS;
	}

	if (mode == M_PRINT && getarg(args, 'a')) {
		int             pretty = getarg(args, 'P') != NULL;

		SETGRENT();
		while ((grp = GETGRENT()) != NULL)
			print_group(grp, pretty);
		ENDGRENT();
		return EXIT_SUCCESS;
	}
	if (a_gid == NULL) {
		if (a_name == NULL)
			errx(EX_DATAERR, "group name or id required");

		if (mode != M_ADD && grp == NULL && isdigit((unsigned char)*a_name->val)) {
			(a_gid = a_name)->ch = 'g';
			a_name = NULL;
		}
	}
	grp = (a_name != NULL) ? GETGRNAM(a_name->val) : GETGRGID((gid_t) atoi(a_gid->val));

	if (mode == M_UPDATE || mode == M_DELETE || mode == M_PRINT) {
		if (a_name == NULL && grp == NULL)	/* Try harder */
			grp = GETGRGID(atoi(a_gid->val));

		if (grp == NULL) {
			if (mode == M_PRINT && getarg(args, 'F')) {
				char	*fmems[1];
				fmems[0] = NULL;
				fakegroup.gr_name = a_name ? a_name->val : "nogroup";
				fakegroup.gr_gid = a_gid ? (gid_t) atol(a_gid->val) : -1;
				fakegroup.gr_mem = fmems;
				return print_group(&fakegroup, getarg(args, 'P') != NULL);
			}
			errx(EX_DATAERR, "unknown group `%s'", a_name ? a_name->val : a_gid->val);
		}
		if (a_name == NULL)	/* Needed later */
			a_name = addarg(args, 'n', grp->gr_name);

		/*
		 * Handle deletions now
		 */
		if (mode == M_DELETE) {
			gid_t           gid = grp->gr_gid;

			rc = delgrent(grp);
			if (rc == -1)
				err(EX_IOERR, "group '%s' not available (NIS?)", grp->gr_name);
			else if (rc != 0) {
				warn("group update");
				return EX_IOERR;
			}
			pw_log(cnf, mode, W_GROUP, "%s(%ld) removed", a_name->val, (long) gid);
			return EXIT_SUCCESS;
		} else if (mode == M_PRINT)
			return print_group(grp, getarg(args, 'P') != NULL);

		if (a_gid)
			grp->gr_gid = (gid_t) atoi(a_gid->val);

		if ((arg = getarg(args, 'l')) != NULL)
			grp->gr_name = pw_checkname((u_char *)arg->val, 0);
	} else {
		if (a_name == NULL)	/* Required */
			errx(EX_DATAERR, "group name required");
		else if (grp != NULL)	/* Exists */
			errx(EX_DATAERR, "group name `%s' already exists", a_name->val);

		extendarray(&members, &grmembers, 200);
		members[0] = NULL;
		grp = &fakegroup;
		grp->gr_name = pw_checkname((u_char *)a_name->val, 0);
		grp->gr_passwd = "*";
		grp->gr_gid = gr_gidpolicy(cnf, args);
		grp->gr_mem = members;
	}

	/*
	 * This allows us to set a group password Group passwords is an
	 * antique idea, rarely used and insecure (no secure database) Should
	 * be discouraged, but it is apparently still supported by some
	 * software.
	 */

	if ((arg = getarg(args, 'h')) != NULL ||
	    (arg = getarg(args, 'H')) != NULL) {
		if (strcmp(arg->val, "-") == 0)
			grp->gr_passwd = "*";	/* No access */
		else {
			int             fd = atoi(arg->val);
			int		precrypt = (arg->ch == 'H');
			int             b;
			int             istty = isatty(fd);
			struct termios  t;
			char           *p, line[256];

			if (istty) {
				if (tcgetattr(fd, &t) == -1)
					istty = 0;
				else {
					struct termios  n = t;

					/* Disable echo */
					n.c_lflag &= ~(ECHO);
					tcsetattr(fd, TCSANOW, &n);
					printf("%sassword for group %s:", (mode == M_UPDATE) ? "New p" : "P", grp->gr_name);
					fflush(stdout);
				}
			}
			b = read(fd, line, sizeof(line) - 1);
			if (istty) {	/* Restore state */
				tcsetattr(fd, TCSANOW, &t);
				fputc('\n', stdout);
				fflush(stdout);
			}
			if (b < 0) {
				warn("-h file descriptor");
				return EX_OSERR;
			}
			line[b] = '\0';
			if ((p = strpbrk(line, " \t\r\n")) != NULL)
				*p = '\0';
			if (!*line)
				errx(EX_DATAERR, "empty password read on file descriptor %d", fd);
			if (precrypt) {
				if (strchr(line, ':') != NULL)
					return EX_DATAERR;
				grp->gr_passwd = line;
			} else
				grp->gr_passwd = pw_pwcrypt(line);
		}
	}

	if (((arg = getarg(args, 'M')) != NULL ||
	    (arg = getarg(args, 'd')) != NULL ||
	    (arg = getarg(args, 'm')) != NULL) && arg->val) {
		int	i = 0;
		char   *p;
		struct passwd	*pwd;

		/* Make sure this is not stay NULL with -M "" */
		extendarray(&members, &grmembers, 200);
		if (arg->ch == 'd')
			delete_members(&members, &grmembers, &i, arg, grp);
		else if (arg->ch == 'm') {
			int	k = 0;

			if (grp->gr_mem != NULL) {
				while (grp->gr_mem[k] != NULL) {
					if (extendarray(&members, &grmembers, i + 2) != -1)
						members[i++] = grp->gr_mem[k];
					k++;
				}
			}
		}

		if (arg->ch != 'd')
			for (p = strtok(arg->val, ", \t"); p != NULL; p = strtok(NULL, ", \t")) {
				int	j;

				/*
				 * Check for duplicates
				 */
				pwd = lookup_pwent(p);
				for (j = 0; j < i && strcmp(members[j], pwd->pw_name) != 0; j++)
					;
				if (j == i && extendarray(&members, &grmembers, i + 2) != -1)
					members[i++] = newstr(pwd->pw_name);
			}
		while (i < grmembers)
			members[i++] = NULL;
		grp->gr_mem = members;
	}

	if (getarg(args, 'N') != NULL)
		return print_group(grp, getarg(args, 'P') != NULL);

	if (mode == M_ADD && (rc = addgrent(grp)) != 0) {
		if (rc == -1)
			warnx("group '%s' already exists", grp->gr_name);
		else
			warn("group update");
		return EX_IOERR;
	} else if (mode == M_UPDATE && (rc = chggrent(a_name->val, grp)) != 0) {
		if (rc == -1)
			warnx("group '%s' not available (NIS?)", grp->gr_name);
		else
			warn("group update");
		return EX_IOERR;
	}
	/* grp may have been invalidated */
	if ((grp = GETGRNAM(a_name->val)) == NULL)
		errx(EX_SOFTWARE, "group disappeared during update");

	pw_log(cnf, mode, W_GROUP, "%s(%ld)", grp->gr_name, (long) grp->gr_gid);

	free(members);

	return EXIT_SUCCESS;
}
Exemple #2
0
int
pw_group(int mode, char *name, long id, struct cargs * args)
{
	int		rc;
	struct carg    *arg;
	struct group   *grp = NULL;
	int	        grmembers = 0;
	char           **members = NULL;
	struct userconf	*cnf = conf.userconf;

	static struct group fakegroup =
	{
		"nogroup",
		"*",
		-1,
		NULL
	};

	if (mode == M_LOCK || mode == M_UNLOCK)
		errx(EX_USAGE, "'lock' command is not available for groups");

	/*
	 * With M_NEXT, we only need to return the
	 * next gid to stdout
	 */
	if (mode == M_NEXT) {
		gid_t next = gr_gidpolicy(cnf, id);
		if (getarg(args, 'q'))
			return next;
		printf("%u\n", next);
		return EXIT_SUCCESS;
	}

	if (mode == M_PRINT && getarg(args, 'a')) {
		SETGRENT();
		while ((grp = GETGRENT()) != NULL)
			print_group(grp);
		ENDGRENT();
		return EXIT_SUCCESS;
	}
	if (id < 0 && name == NULL)
		errx(EX_DATAERR, "group name or id required");

	grp = (name != NULL) ? GETGRNAM(name) : GETGRGID(id);

	if (mode == M_UPDATE || mode == M_DELETE || mode == M_PRINT) {
		if (name == NULL && grp == NULL)	/* Try harder */
			grp = GETGRGID(id);

		if (grp == NULL) {
			if (mode == M_PRINT && getarg(args, 'F')) {
				char	*fmems[1];
				fmems[0] = NULL;
				fakegroup.gr_name = name ? name : "nogroup";
				fakegroup.gr_gid = (gid_t) id;
				fakegroup.gr_mem = fmems;
				return print_group(&fakegroup);
			}
			if (name == NULL)
				errx(EX_DATAERR, "unknown group `%s'", name);
			else
				errx(EX_DATAERR, "unknown group `%ld'", id);
		}
		if (name == NULL)	/* Needed later */
			name = grp->gr_name;

		/*
		 * Handle deletions now
		 */
		if (mode == M_DELETE) {
			rc = delgrent(grp);
			if (rc == -1)
				err(EX_IOERR, "group '%s' not available (NIS?)",
				    name);
			else if (rc != 0) {
				err(EX_IOERR, "group update");
			}
			pw_log(cnf, mode, W_GROUP, "%s(%ld) removed", name, id);
			return EXIT_SUCCESS;
		} else if (mode == M_PRINT)
			return print_group(grp);

		if (id > 0)
			grp->gr_gid = (gid_t) id;

		if (conf.newname != NULL)
			grp->gr_name = pw_checkname(conf.newname, 0);
	} else {
		if (name == NULL)	/* Required */
			errx(EX_DATAERR, "group name required");
		else if (grp != NULL)	/* Exists */
			errx(EX_DATAERR, "group name `%s' already exists", name);

		extendarray(&members, &grmembers, 200);
		members[0] = NULL;
		grp = &fakegroup;
		grp->gr_name = pw_checkname(name, 0);
		grp->gr_passwd = "*";
		grp->gr_gid = gr_gidpolicy(cnf, id);
		grp->gr_mem = members;
	}

	/*
	 * This allows us to set a group password Group passwords is an
	 * antique idea, rarely used and insecure (no secure database) Should
	 * be discouraged, but it is apparently still supported by some
	 * software.
	 */

	if (conf.fd != -1)
		set_passwd(grp, mode == M_UPDATE);

	if (((arg = getarg(args, 'M')) != NULL ||
	    (arg = getarg(args, 'd')) != NULL ||
	    (arg = getarg(args, 'm')) != NULL) && arg->val) {
		int	i = 0;
		char   *p;
		struct passwd	*pwd;

		/* Make sure this is not stay NULL with -M "" */
		extendarray(&members, &grmembers, 200);
		if (arg->ch == 'd')
			delete_members(&members, &grmembers, &i, arg, grp);
		else if (arg->ch == 'm') {
			int	k = 0;

			if (grp->gr_mem != NULL) {
				while (grp->gr_mem[k] != NULL) {
					if (extendarray(&members, &grmembers, i + 2) != -1)
						members[i++] = grp->gr_mem[k];
					k++;
				}
			}
		}

		if (arg->ch != 'd')
			for (p = strtok(arg->val, ", \t"); p != NULL; p = strtok(NULL, ", \t")) {
				int	j;

				/*
				 * Check for duplicates
				 */
				pwd = lookup_pwent(p);
				for (j = 0; j < i && strcmp(members[j], pwd->pw_name) != 0; j++)
					;
				if (j == i && extendarray(&members, &grmembers, i + 2) != -1)
					members[i++] = newstr(pwd->pw_name);
			}
		while (i < grmembers)
			members[i++] = NULL;
		grp->gr_mem = members;
	}

	if (conf.dryrun)
		return print_group(grp);

	if (mode == M_ADD && (rc = addgrent(grp)) != 0) {
		if (rc == -1)
			errx(EX_IOERR, "group '%s' already exists",
			    grp->gr_name);
		else
			err(EX_IOERR, "group update");
	} else if (mode == M_UPDATE && (rc = chggrent(name, grp)) != 0) {
		if (rc == -1)
			errx(EX_IOERR, "group '%s' not available (NIS?)",
			    grp->gr_name);
		else
			err(EX_IOERR, "group update");
	}

	if (conf.newname != NULL)
		name = conf.newname;
	/* grp may have been invalidated */
	if ((grp = GETGRNAM(name)) == NULL)
		errx(EX_SOFTWARE, "group disappeared during update");

	pw_log(cnf, mode, W_GROUP, "%s(%u)", grp->gr_name, grp->gr_gid);

	free(members);

	return EXIT_SUCCESS;
}