+static struct passwd *lookup_pwent(const char *user);
+static void delete_members(struct group *grp, char *list);
+static int print_group(struct group * grp, bool pretty);
+static gid_t gr_gidpolicy(struct userconf * cnf, intmax_t id);
+
+static void
+grp_set_passwd(struct group *grp, bool update, int fd, bool precrypted)
+{
+ int b;
+ int istty;
+ struct termios t, n;
+ char *p, line[256];
+
+ if (fd == -1)
+ return;
+
+ if (fd == '-') {
+ grp->gr_passwd = "*"; /* No access */
+ return;
+ }
+
+ if ((istty = isatty(fd))) {
+ if (tcgetattr(fd, &t) == -1)
+ istty = 0;
+ else {
+ n = t;
+ /* Disable echo */
+ n.c_lflag &= ~(ECHO);
+ tcsetattr(fd, TCSANOW, &n);
+ printf("%sassword for group %s:",
+ 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)
+ err(EX_OSERR, "-h file descriptor");
+ 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",
+ conf.fd);
+ if (precrypted) {
+ if (strchr(line, ':') != 0)
+ errx(EX_DATAERR, "wrong encrypted passwrd");
+ grp->gr_passwd = line;
+ } else
+ grp->gr_passwd = pw_pwcrypt(line);
+}
+
+int
+pw_groupnext(struct userconf *cnf, bool quiet)
+{
+ gid_t next = gr_gidpolicy(cnf, -1);
+
+ if (quiet)
+ return (next);
+ printf("%ju\n", (uintmax_t)next);
+
+ return (EXIT_SUCCESS);
+}
+
+static struct group *
+getgroup(char *name, intmax_t id, bool fatal)
+{
+ struct group *grp;
+
+ if (id < 0 && name == NULL)
+ errx(EX_DATAERR, "groupname or id required");
+ grp = (name != NULL) ? GETGRNAM(name) : GETGRGID(id);
+ if (grp == NULL) {
+ if (!fatal)
+ return (NULL);
+ if (name == NULL)
+ errx(EX_DATAERR, "unknown gid `%ju'", id);
+ errx(EX_DATAERR, "unknown group `%s'", name);
+ }
+ return (grp);
+}
+
+/*
+ * Lookup a passwd entry using a name or UID.
+ */
+static struct passwd *
+lookup_pwent(const char *user)
+{
+ struct passwd *pwd;
+
+ if ((pwd = GETPWNAM(user)) == NULL &&
+ (!isdigit((unsigned char)*user) ||
+ (pwd = getpwuid((uid_t) atoi(user))) == NULL))
+ errx(EX_NOUSER, "user `%s' does not exist", user);
+
+ return (pwd);
+}
+
+
+/*
+ * Delete requested members from a group.
+ */
+static void
+delete_members(struct group *grp, char *list)
+{
+ char *p;
+ int k;
+
+ if (grp->gr_mem == NULL)
+ return;
+
+ for (p = strtok(list, ", \t"); p != NULL; p = strtok(NULL, ", \t")) {
+ for (k = 0; grp->gr_mem[k] != NULL; k++) {
+ if (strcmp(grp->gr_mem[k], p) == 0)
+ break;
+ }
+ if (grp->gr_mem[k] == NULL) /* No match */
+ continue;
+
+ for (; grp->gr_mem[k] != NULL; k++)
+ grp->gr_mem[k] = grp->gr_mem[k+1];
+ }
+}
+
+static gid_t
+gr_gidpolicy(struct userconf * cnf, intmax_t id)
+{
+ struct group *grp;
+ struct bitmap bm;
+ gid_t gid = (gid_t) - 1;
+
+ /*
+ * Check the given gid, if any
+ */
+ if (id > 0) {
+ gid = (gid_t) id;
+
+ if ((grp = GETGRGID(gid)) != NULL && conf.checkduplicate)
+ errx(EX_DATAERR, "gid `%ju' has already been allocated",
+ (uintmax_t)grp->gr_gid);
+ return (gid);
+ }
+
+ /*
+ * We need to allocate the next available gid under one of
+ * two policies a) Grab the first unused gid b) Grab the
+ * highest possible unused gid
+ */
+ if (cnf->min_gid >= cnf->max_gid) { /* Sanity claus^H^H^H^Hheck */
+ cnf->min_gid = 1000;
+ cnf->max_gid = 32000;
+ }
+ bm = bm_alloc(cnf->max_gid - cnf->min_gid + 1);
+
+ /*
+ * Now, let's fill the bitmap from the password file
+ */
+ SETGRENT();
+ while ((grp = GETGRENT()) != NULL)
+ if ((gid_t)grp->gr_gid >= (gid_t)cnf->min_gid &&
+ (gid_t)grp->gr_gid <= (gid_t)cnf->max_gid)
+ bm_setbit(&bm, grp->gr_gid - cnf->min_gid);
+ ENDGRENT();
+
+ /*
+ * Then apply the policy, with fallback to reuse if necessary
+ */
+ if (cnf->reuse_gids)
+ gid = (gid_t) (bm_firstunset(&bm) + cnf->min_gid);
+ else {
+ gid = (gid_t) (bm_lastset(&bm) + 1);
+ if (!bm_isset(&bm, gid))
+ gid += cnf->min_gid;
+ else
+ gid = (gid_t) (bm_firstunset(&bm) + cnf->min_gid);
+ }
+
+ /*
+ * Another sanity check
+ */
+ if (gid < cnf->min_gid || gid > cnf->max_gid)
+ errx(EX_SOFTWARE, "unable to allocate a new gid - range fully "
+ "used");
+ bm_dealloc(&bm);
+ return (gid);
+}
+
+static int
+print_group(struct group * grp, bool pretty)
+{
+ char *buf = NULL;
+ int i;
+
+ if (pretty) {
+ printf("Group Name: %-15s #%lu\n"
+ " Members: ",
+ grp->gr_name, (long) grp->gr_gid);
+ if (grp->gr_mem != NULL) {
+ for (i = 0; grp->gr_mem[i]; i++)
+ printf("%s%s", i ? "," : "", grp->gr_mem[i]);
+ }
+ fputs("\n\n", stdout);
+ return (EXIT_SUCCESS);
+ }
+
+ buf = gr_make(grp);
+ printf("%s\n", buf);
+ free(buf);
+ return (EXIT_SUCCESS);
+}
+
+int
+pw_group_next(int argc, char **argv, char *arg1 __unused)
+{
+ struct userconf *cnf;
+ const char *cfg = NULL;
+ int ch;
+ bool quiet = false;
+
+ while ((ch = getopt(argc, argv, "C:q")) != -1) {
+ switch (ch) {
+ case 'C':
+ cfg = optarg;
+ break;
+ case 'q':
+ quiet = true;
+ break;
+ }
+ }
git.ckatri.com / pw-darwin.git / blobdiff