static int pw_update(struct passwd * pwd, char const * user) { struct passwd *pw = NULL; struct passwd *old_pw = NULL; int rc, pfd, tfd; if ((rc = pwdb_check()) != 0) return (rc); if (pwd != NULL) pw = pw_dup(pwd); if (user != NULL) old_pw = GETPWNAM(user); if (pw_init(pwpath, NULL)) err(1, "pw_init()"); if ((pfd = pw_lock()) == -1) { pw_fini(); err(1, "pw_lock()"); } if ((tfd = pw_tmp(-1)) == -1) { pw_fini(); err(1, "pw_tmp()"); } if (pw_copy(pfd, tfd, pw, old_pw) == -1) { pw_fini(); err(1, "pw_copy()"); } /* * in case of deletion of a user, the whole database * needs to be regenerated */ if (pw_mkdb(pw != NULL ? pw->pw_name : NULL) == -1) { pw_fini(); err(1, "pw_mkdb()"); } free(pw); pw_fini(); return (0); }
static int pw_nisupdate(const char * path, struct passwd * pwd, char const * user) { int pfd, tfd; struct passwd *pw = NULL; struct passwd *old_pw = NULL; printf("===> %s\n", path); if (pwd != NULL) pw = pw_dup(pwd); if (user != NULL) old_pw = GETPWNAM(user); if (pw_init(NULL, path)) err(1,"pw_init()"); if ((pfd = pw_lock()) == -1) { pw_fini(); err(1, "pw_lock()"); } if ((tfd = pw_tmp(-1)) == -1) { pw_fini(); err(1, "pw_tmp()"); } if (pw_copy(pfd, tfd, pw, old_pw) == -1) { pw_fini(); close(tfd); err(1, "pw_copy()"); } close(tfd); if (chmod(pw_tempname(), 0644) == -1) err(1, "chmod()"); if (rename(pw_tempname(), path) == -1) err(1, "rename()"); free(pw); pw_fini(); return (0); }
int main(int argc, char *argv[]) { const char *passwd_dir = NULL; int ch, pfd, tfd; char *line; size_t len; while ((ch = getopt(argc, argv, "d:")) != -1) switch (ch) { case 'd': passwd_dir = optarg; break; case '?': default: usage(); } argc -= optind; argv += optind; if (argc != 0) usage(); if (pw_init(passwd_dir, NULL) == -1) err(1, "pw_init()"); if ((pfd = pw_lock()) == -1) { pw_fini(); err(1, "pw_lock()"); } if ((tfd = pw_tmp(pfd)) == -1) { pw_fini(); err(1, "pw_tmp()"); } close(tfd); /* Force umask for partial writes made in the edit phase */ umask(077); for (;;) { switch (pw_edit(0)) { case -1: pw_fini(); err(1, "pw_edit()"); case 0: pw_fini(); errx(0, "no changes made"); default: break; } if (pw_mkdb(NULL) == 0) { pw_fini(); errx(0, "password list updated"); } printf("re-edit the password file? "); fflush(stdout); if ((line = fgetln(stdin, &len)) == NULL) { pw_fini(); err(1, "fgetln()"); } if (len > 0 && (*line == 'N' || *line == 'n')) break; } pw_fini(); exit(0); }
int main(int argc, char *argv[]) { enum { NEWSH, LOADENTRY, EDITENTRY, NEWPW, NEWEXP } op; struct passwd lpw, *old_pw, *pw; int ch, pfd, tfd; const char *password; char *arg = NULL; uid_t uid; #ifdef YP struct ypclnt *ypclnt; const char *yp_domain = NULL, *yp_host = NULL; #endif pw = old_pw = NULL; op = EDITENTRY; #ifdef YP while ((ch = getopt(argc, argv, "a:p:s:e:d:h:loy")) != -1) #else while ((ch = getopt(argc, argv, "a:p:s:e:")) != -1) #endif switch (ch) { case 'a': op = LOADENTRY; arg = optarg; break; case 's': op = NEWSH; arg = optarg; break; case 'p': op = NEWPW; arg = optarg; break; case 'e': op = NEWEXP; arg = optarg; break; #ifdef YP case 'd': yp_domain = optarg; break; case 'h': yp_host = optarg; break; case 'l': case 'o': case 'y': /* compatibility */ break; #endif case '?': default: usage(); } argc -= optind; argv += optind; if (argc > 1) usage(); uid = getuid(); if (op == EDITENTRY || op == NEWSH || op == NEWPW || op == NEWEXP) { if (argc == 0) { if ((pw = getpwuid(uid)) == NULL) errx(1, "unknown user: uid %lu", (unsigned long)uid); } else { if ((pw = getpwnam(*argv)) == NULL) errx(1, "unknown user: %s", *argv); if (uid != 0 && uid != pw->pw_uid) baduser(); } /* Make a copy for later verification */ if ((pw = pw_dup(pw)) == NULL || (old_pw = pw_dup(pw)) == NULL) err(1, "pw_dup"); } #ifdef YP if (pw != NULL && (pw->pw_fields & _PWF_SOURCE) == _PWF_NIS) { ypclnt = ypclnt_new(yp_domain, "passwd.byname", yp_host); master_mode = (ypclnt != NULL && ypclnt_connect(ypclnt) != -1 && ypclnt_havepasswdd(ypclnt) == 1); ypclnt_free(ypclnt); } else #endif master_mode = (uid == 0); if (op == NEWSH) { /* protect p_shell -- it thinks NULL is /bin/sh */ if (!arg[0]) usage(); if (p_shell(arg, pw, (ENTRY *)NULL) == -1) exit(1); } if (op == NEWEXP) { if (uid) /* only root can change expire */ baduser(); if (p_expire(arg, pw, (ENTRY *)NULL) == -1) exit(1); } if (op == LOADENTRY) { if (uid) baduser(); pw = &lpw; old_pw = NULL; if (!__pw_scan(arg, pw, _PWSCAN_WARN|_PWSCAN_MASTER)) exit(1); } if (op == NEWPW) { if (uid) baduser(); if (strchr(arg, ':')) errx(1, "invalid format for password"); pw->pw_passwd = arg; } if (op == EDITENTRY) { /* * We don't really need pw_*() here, but pw_edit() (used * by edit()) is just too useful... */ if (pw_init(NULL, NULL)) err(1, "pw_init()"); if ((tfd = pw_tmp(-1)) == -1) { pw_fini(); err(1, "pw_tmp()"); } free(pw); pw = edit(pw_tempname(), old_pw); pw_fini(); if (pw == NULL) err(1, "edit()"); /* * pw_equal does not check for crypted passwords, so we * should do it explicitly */ if (pw_equal(old_pw, pw) && strcmp(old_pw->pw_passwd, pw->pw_passwd) == 0) errx(0, "user information unchanged"); } if (old_pw && !master_mode) { password = getpass("Password: "******""; } if (old_pw != NULL) pw->pw_fields |= (old_pw->pw_fields & _PWF_SOURCE); switch (pw->pw_fields & _PWF_SOURCE) { #ifdef YP case _PWF_NIS: ypclnt = ypclnt_new(yp_domain, "passwd.byname", yp_host); if (ypclnt == NULL) { warnx("ypclnt_new failed"); exit(1); } if (ypclnt_connect(ypclnt) == -1 || ypclnt_passwd(ypclnt, pw, password) == -1) { warnx("%s", ypclnt->error); ypclnt_free(ypclnt); exit(1); } ypclnt_free(ypclnt); errx(0, "NIS user information updated"); #endif /* YP */ case 0: case _PWF_FILES: if (pw_init(NULL, NULL)) err(1, "pw_init()"); if ((pfd = pw_lock()) == -1) { pw_fini(); err(1, "pw_lock()"); } if ((tfd = pw_tmp(-1)) == -1) { pw_fini(); err(1, "pw_tmp()"); } if (pw_copy(pfd, tfd, pw, old_pw) == -1) { pw_fini(); err(1, "pw_copy"); } if (pw_mkdb(pw->pw_name) == -1) { pw_fini(); err(1, "pw_mkdb()"); } pw_fini(); errx(0, "user information updated"); break; default: errx(1, "unsupported passwd source"); } }
static int pw_update(struct passwd * pwd, char const * user) { int rc = 0; /* * First, let's check the see if the database is alright * Note: -C is only available in FreeBSD 2.2 and above */ #ifdef HAVE_PWDB_C rc = pwdb("-C", (char *)NULL); /* Check only */ if (rc == 0) { #else { /* No -C */ #endif int pfd, tfd; struct passwd *pw = NULL; struct passwd *old_pw = NULL; if (pwd != NULL) pw = pw_dup(pwd); if (user != NULL) old_pw = GETPWNAM(user); if (pw_init(pwpath, NULL)) err(1, "pw_init()"); if ((pfd = pw_lock()) == -1) { pw_fini(); err(1, "pw_lock()"); } if ((tfd = pw_tmp(-1)) == -1) { pw_fini(); err(1, "pw_tmp()"); } if (pw_copy(pfd, tfd, pw, old_pw) == -1) { pw_fini(); err(1, "pw_copy()"); } if (pw_mkdb(user) == -1) { pw_fini(); err(1, "pw_mkdb()"); } free(pw); pw_fini(); } return 0; } int addpwent(struct passwd * pwd) { return pw_update(pwd, NULL); } int chgpwent(char const * login, struct passwd * pwd) { return pw_update(pwd, login); } int delpwent(struct passwd * pwd) { char login[MAXLOGNAME]; strlcpy(login, pwd->pw_name, MAXLOGNAME); return pw_update(NULL, login); }