X-Git-Url: https://git.cameronkatri.com/pw-darwin.git/blobdiff_plain/f31ec719878d9025a455971cbe1d0976dc9ef719..4094297a53a478f9ed7c4160ed63842a19717ba9:/pw/pw_user.c diff --git a/pw/pw_user.c b/pw/pw_user.c index 483148a..8cffac9 100644 --- a/pw/pw_user.c +++ b/pw/pw_user.c @@ -30,924 +30,372 @@ static const char rcsid[] = "$FreeBSD$"; #endif /* not lint */ +#include +#include + #include +#include #include +#include #include -#include -#include +#include +#include +#include +#include #include +#include +#include #include -#include -#include -#include #include -#include -#include -#include -#include + #include "pw.h" #include "bitmap.h" +#include "psdate.h" #define LOGNAMESIZE (MAXLOGNAME-1) static char locked_str[] = "*LOCKED*"; -static int print_user(struct passwd * pwd, int pretty, int v7); -static uid_t pw_uidpolicy(struct userconf * cnf, struct cargs * args); -static uid_t pw_gidpolicy(struct userconf * cnf, struct cargs * args, char *nam, gid_t prefer); -static time_t pw_pwdpolicy(struct userconf * cnf, struct cargs * args); -static time_t pw_exppolicy(struct userconf * cnf, struct cargs * args); -static char *pw_homepolicy(struct userconf * cnf, struct cargs * args, char const * user); -static char *pw_shellpolicy(struct userconf * cnf, struct cargs * args, char *newshell); -static char *pw_password(struct userconf * cnf, struct cargs * args, char const * user); -static char *shell_path(char const * path, char *shells[], char *sh); -static void rmat(uid_t uid); -static void rmopie(char const * name); +static struct passwd fakeuser = { + "nouser", + "*", + -1, + -1, + 0, + "", + "User &", + "/nonexistent", + "/bin/sh", + 0, + 0 +}; + +static int print_user(struct passwd *pwd, bool pretty, bool v7); +static uid_t pw_uidpolicy(struct userconf *cnf, intmax_t id); +static uid_t pw_gidpolicy(struct userconf *cnf, char *grname, char *nam, + gid_t prefer, bool dryrun); +static char *pw_homepolicy(struct userconf * cnf, char *homedir, + const char *user); +static char *pw_shellpolicy(struct userconf * cnf); +static char *pw_password(struct userconf * cnf, char const * user, + bool dryrun); +static char *shell_path(char const * path, char *shells[], char *sh); +static void rmat(uid_t uid); +static void rmopie(char const * name); -/*- - * -C config configuration file - * -q quiet operation - * -n name login name - * -u uid user id - * -c comment user name/comment - * -d directory home directory - * -e date account expiry date - * -p date password expiry date - * -g grp primary group - * -G grp1,grp2 additional groups - * -m [ -k dir ] create and set up home - * -s shell name of login shell - * -o duplicate uid ok - * -L class user class - * -l name new login name - * -h fd password filehandle - * -H fd encrypted password filehandle - * -F force print or add - * Setting defaults: - * -D set user defaults - * -b dir default home root dir - * -e period default expiry period - * -p period default password change period - * -g group default group - * -G grp1,grp2.. default additional groups - * -L class default login class - * -k dir default home skeleton - * -s shell default shell - * -w method default password method - */ - -int -pw_user(struct userconf * cnf, int mode, struct cargs * args) +static void +mkdir_home_parents(int dfd, const char *dir) { - int rc, edited = 0; - char *p = NULL; - char *passtmp; - struct carg *a_name; - struct carg *a_uid; - struct carg *arg; - struct passwd *pwd = NULL; - struct group *grp; - struct stat st; - char line[_PASSWORD_LEN+1]; - FILE *fp; - char *dmode_c; - void *set = NULL; - - static struct passwd fakeuser = - { - NULL, - "*", - -1, - -1, - 0, - "", - "User &", - "/nonexistent", - "/bin/sh", - 0 -#if defined(__FreeBSD__) - ,0 -#endif - }; + struct stat st; + char *dirs, *tmp; + if (*dir != '/') + errx(EX_DATAERR, "invalid base directory for home '%s'", dir); - /* - * With M_NEXT, we only need to return the - * next uid to stdout - */ - if (mode == M_NEXT) - { - uid_t next = pw_uidpolicy(cnf, args); - if (getarg(args, 'q')) - return next; - printf("%ld:", (long)next); - pw_group(cnf, mode, args); - return EXIT_SUCCESS; - } - - /* - * We can do all of the common legwork here - */ + dir++; - if ((arg = getarg(args, 'b')) != NULL) { - cnf->home = arg->val; + if (fstatat(dfd, dir, &st, 0) != -1) { + if (S_ISDIR(st.st_mode)) + return; + errx(EX_OSFILE, "root home `/%s' is not a directory", dir); } - if ((arg = getarg(args, 'M')) != NULL) { - dmode_c = arg->val; - if ((set = setmode(dmode_c)) == NULL) - errx(EX_DATAERR, "invalid directory creation mode '%s'", - dmode_c); - cnf->homemode = getmode(set, _DEF_DIRMODE); - free(set); + dirs = strdup(dir); + if (dirs == NULL) + errx(EX_UNAVAILABLE, "out of memory"); + + tmp = strrchr(dirs, '/'); + if (tmp == NULL) { + free(dirs); + return; } + tmp[0] = '\0'; /* - * If we'll need to use it or we're updating it, - * then create the base home directory if necessary + * This is a kludge especially for Joerg :) + * If the home directory would be created in the root partition, then + * we really create it under /usr which is likely to have more space. + * But we create a symlink from cnf->home -> "/usr" -> cnf->home */ - if (arg != NULL || getarg(args, 'm') != NULL) { - int l = strlen(cnf->home); - - if (l > 1 && cnf->home[l-1] == '/') /* Shave off any trailing path delimiter */ - cnf->home[--l] = '\0'; - - if (l < 2 || *cnf->home != '/') /* Check for absolute path name */ - errx(EX_DATAERR, "invalid base directory for home '%s'", cnf->home); - - if (stat(cnf->home, &st) == -1) { - char dbuf[MAXPATHLEN]; - - /* - * This is a kludge especially for Joerg :) - * If the home directory would be created in the root partition, then - * we really create it under /usr which is likely to have more space. - * But we create a symlink from cnf->home -> "/usr" -> cnf->home - */ - if (strchr(cnf->home+1, '/') == NULL) { - strcpy(dbuf, "/usr"); - strncat(dbuf, cnf->home, MAXPATHLEN-5); - if (mkdir(dbuf, _DEF_DIRMODE) != -1 || errno == EEXIST) { - chown(dbuf, 0, 0); - /* - * Skip first "/" and create symlink: - * /home -> usr/home - */ - symlink(dbuf+1, cnf->home); - } - /* If this falls, fall back to old method */ - } - strlcpy(dbuf, cnf->home, sizeof(dbuf)); - p = dbuf; - if (stat(dbuf, &st) == -1) { - while ((p = strchr(p + 1, '/')) != NULL) { - *p = '\0'; - if (stat(dbuf, &st) == -1) { - if (mkdir(dbuf, _DEF_DIRMODE) == -1) - goto direrr; - chown(dbuf, 0, 0); - } else if (!S_ISDIR(st.st_mode)) - errx(EX_OSFILE, "'%s' (root home parent) is not a directory", dbuf); - *p = '/'; - } - } - if (stat(dbuf, &st) == -1) { - if (mkdir(dbuf, _DEF_DIRMODE) == -1) { - direrr: err(EX_OSFILE, "mkdir '%s'", dbuf); - } - chown(dbuf, 0, 0); - } - } else if (!S_ISDIR(st.st_mode)) - errx(EX_OSFILE, "root home `%s' is not a directory", cnf->home); - } - - if ((arg = getarg(args, 'e')) != NULL) - cnf->expire_days = atoi(arg->val); - - if ((arg = getarg(args, 'y')) != NULL) - cnf->nispasswd = arg->val; - - if ((arg = getarg(args, 'p')) != NULL && arg->val) - cnf->password_days = atoi(arg->val); - - if ((arg = getarg(args, 'g')) != NULL) { - if (!*(p = arg->val)) /* Handle empty group list specially */ - cnf->default_group = ""; - else { - if ((grp = GETGRNAM(p)) == NULL) { - if (!isdigit((unsigned char)*p) || (grp = GETGRGID((gid_t) atoi(p))) == NULL) - errx(EX_NOUSER, "group `%s' does not exist", p); - } - cnf->default_group = newstr(grp->gr_name); + if (strchr(dirs, '/') == NULL) { + asprintf(&tmp, "usr/%s", dirs); + if (tmp == NULL) + errx(EX_UNAVAILABLE, "out of memory"); + if (mkdirat(dfd, tmp, _DEF_DIRMODE) != -1 || errno == EEXIST) { + fchownat(dfd, tmp, 0, 0, 0); + symlinkat(tmp, dfd, dirs); } + free(tmp); } - if ((arg = getarg(args, 'L')) != NULL) - cnf->default_class = pw_checkname((u_char *)arg->val, 0); - - if ((arg = getarg(args, 'G')) != NULL && arg->val) { - int i = 0; - - for (p = strtok(arg->val, ", \t"); p != NULL; p = strtok(NULL, ", \t")) { - if ((grp = GETGRNAM(p)) == NULL) { - if (!isdigit((unsigned char)*p) || (grp = GETGRGID((gid_t) atoi(p))) == NULL) - errx(EX_NOUSER, "group `%s' does not exist", p); + tmp = dirs; + if (fstatat(dfd, dirs, &st, 0) == -1) { + while ((tmp = strchr(tmp + 1, '/')) != NULL) { + *tmp = '\0'; + if (fstatat(dfd, dirs, &st, 0) == -1) { + if (mkdirat(dfd, dirs, _DEF_DIRMODE) == -1) + err(EX_OSFILE, "'%s' (root home parent) is not a directory", dirs); } - if (extendarray(&cnf->groups, &cnf->numgroups, i + 2) != -1) - cnf->groups[i++] = newstr(grp->gr_name); + *tmp = '/'; } - while (i < cnf->numgroups) - cnf->groups[i++] = NULL; } - - if ((arg = getarg(args, 'k')) != NULL) { - if (stat(cnf->dotdir = arg->val, &st) == -1 || !S_ISDIR(st.st_mode)) - errx(EX_OSFILE, "skeleton `%s' is not a directory or does not exist", cnf->dotdir); + if (fstatat(dfd, dirs, &st, 0) == -1) { + if (mkdirat(dfd, dirs, _DEF_DIRMODE) == -1) + err(EX_OSFILE, "'%s' (root home parent) is not a directory", dirs); + fchownat(dfd, dirs, 0, 0, 0); } - if ((arg = getarg(args, 's')) != NULL) - cnf->shell_default = arg->val; + free(dirs); +} - if ((arg = getarg(args, 'w')) != NULL) - cnf->default_password = boolean_val(arg->val, cnf->default_password); - if (mode == M_ADD && getarg(args, 'D')) { - if (getarg(args, 'n') != NULL) - errx(EX_DATAERR, "can't combine `-D' with `-n name'"); - if ((arg = getarg(args, 'u')) != NULL && (p = strtok(arg->val, ", \t")) != NULL) { - if ((cnf->min_uid = (uid_t) atoi(p)) == 0) - cnf->min_uid = 1000; - if ((p = strtok(NULL, " ,\t")) == NULL || (cnf->max_uid = (uid_t) atoi(p)) < cnf->min_uid) - cnf->max_uid = 32000; - } - if ((arg = getarg(args, 'i')) != NULL && (p = strtok(arg->val, ", \t")) != NULL) { - if ((cnf->min_gid = (gid_t) atoi(p)) == 0) - cnf->min_gid = 1000; - if ((p = strtok(NULL, " ,\t")) == NULL || (cnf->max_gid = (gid_t) atoi(p)) < cnf->min_gid) - cnf->max_gid = 32000; - } +static void +create_and_populate_homedir(struct userconf *cnf, struct passwd *pwd, + const char *skeldir, mode_t homemode, bool update) +{ + int skelfd = -1; - arg = getarg(args, 'C'); - if (write_userconfig(arg ? arg->val : NULL)) - return EXIT_SUCCESS; - warn("config update"); - return EX_IOERR; - } + /* Create home parents directories */ + mkdir_home_parents(conf.rootfd, pwd->pw_dir); - if (mode == M_PRINT && getarg(args, 'a')) { - int pretty = getarg(args, 'P') != NULL; - int v7 = getarg(args, '7') != NULL; - SETPWENT(); - while ((pwd = GETPWENT()) != NULL) - print_user(pwd, pretty, v7); - ENDPWENT(); - return EXIT_SUCCESS; + if (skeldir != NULL && *skeldir != '\0') { + if (*skeldir == '/') + skeldir++; + skelfd = openat(conf.rootfd, skeldir, O_DIRECTORY|O_CLOEXEC); } - if ((a_name = getarg(args, 'n')) != NULL) - pwd = GETPWNAM(pw_checkname((u_char *)a_name->val, 0)); - a_uid = getarg(args, 'u'); - - if (a_uid == NULL) { - if (a_name == NULL) - errx(EX_DATAERR, "user name or id required"); + copymkdir(conf.rootfd, pwd->pw_dir, skelfd, homemode, pwd->pw_uid, + pwd->pw_gid, 0); + pw_log(cnf, update ? M_UPDATE : M_ADD, W_USER, "%s(%ju) home %s made", + pwd->pw_name, (uintmax_t)pwd->pw_uid, pwd->pw_dir); +} - /* - * Determine whether 'n' switch is name or uid - we don't - * really don't really care which we have, but we need to - * know. - */ - if (mode != M_ADD && pwd == NULL - && strspn(a_name->val, "0123456789") == strlen(a_name->val) - && *a_name->val) { - (a_uid = a_name)->ch = 'u'; - a_name = NULL; +static int +pw_set_passwd(struct passwd *pwd, int fd, bool precrypted, bool update) +{ + int b, istty; + struct termios t, n; + login_cap_t *lc; + char line[_PASSWORD_LEN+1]; + char *p; + + if (fd == '-') { + if (!pwd->pw_passwd || *pwd->pw_passwd != '*') { + pwd->pw_passwd = "*"; /* No access */ + return (1); } - } else { - if (strspn(a_uid->val, "0123456789") != strlen(a_uid->val)) - errx(EX_USAGE, "-u expects a number"); + return (0); } - /* - * Update, delete & print require that the user exists - */ - if (mode == M_UPDATE || mode == M_DELETE || - mode == M_PRINT || mode == M_LOCK || mode == M_UNLOCK) { - - if (a_name == NULL && pwd == NULL) /* Try harder */ - pwd = GETPWUID(atoi(a_uid->val)); - - if (pwd == NULL) { - if (mode == M_PRINT && getarg(args, 'F')) { - fakeuser.pw_name = a_name ? a_name->val : "nouser"; - fakeuser.pw_uid = a_uid ? (uid_t) atol(a_uid->val) : -1; - return print_user(&fakeuser, - getarg(args, 'P') != NULL, - getarg(args, '7') != NULL); - } - if (a_name == NULL) - errx(EX_NOUSER, "no such uid `%s'", a_uid->val); - errx(EX_NOUSER, "no such user `%s'", a_name->val); - } - - if (a_name == NULL) /* May be needed later */ - a_name = addarg(args, 'n', newstr(pwd->pw_name)); - - /* - * The M_LOCK and M_UNLOCK functions simply add or remove - * a "*LOCKED*" prefix from in front of the password to - * prevent it decoding correctly, and therefore prevents - * access. Of course, this only prevents access via - * password authentication (not ssh, kerberos or any - * other method that does not use the UNIX password) but - * that is a known limitation. - */ - - if (mode == M_LOCK) { - if (strncmp(pwd->pw_passwd, locked_str, sizeof(locked_str)-1) == 0) - errx(EX_DATAERR, "user '%s' is already locked", pwd->pw_name); - passtmp = malloc(strlen(pwd->pw_passwd) + sizeof(locked_str)); - if (passtmp == NULL) /* disaster */ - errx(EX_UNAVAILABLE, "out of memory"); - strcpy(passtmp, locked_str); - strcat(passtmp, pwd->pw_passwd); - pwd->pw_passwd = passtmp; - edited = 1; - } else if (mode == M_UNLOCK) { - if (strncmp(pwd->pw_passwd, locked_str, sizeof(locked_str)-1) != 0) - errx(EX_DATAERR, "user '%s' is not locked", pwd->pw_name); - pwd->pw_passwd += sizeof(locked_str)-1; - edited = 1; - } else if (mode == M_DELETE) { - /* - * Handle deletions now - */ - char file[MAXPATHLEN]; - char home[MAXPATHLEN]; - uid_t uid = pwd->pw_uid; - struct group *gr; - char grname[LOGNAMESIZE]; - - if (strcmp(pwd->pw_name, "root") == 0) - errx(EX_DATAERR, "cannot remove user 'root'"); - - if (!PWALTDIR()) { - /* - * Remove opie record from /etc/opiekeys - */ - - rmopie(pwd->pw_name); - - /* - * Remove crontabs - */ - snprintf(file, sizeof(file), "/var/cron/tabs/%s", pwd->pw_name); - if (access(file, F_OK) == 0) { - sprintf(file, "crontab -u %s -r", pwd->pw_name); - system(file); - } - } - /* - * Save these for later, since contents of pwd may be - * invalidated by deletion - */ - sprintf(file, "%s/%s", _PATH_MAILDIR, pwd->pw_name); - strlcpy(home, pwd->pw_dir, sizeof(home)); - gr = GETGRGID(pwd->pw_gid); - if (gr != NULL) - strlcpy(grname, gr->gr_name, LOGNAMESIZE); - else - grname[0] = '\0'; - - rc = delpwent(pwd); - if (rc == -1) - err(EX_IOERR, "user '%s' does not exist", pwd->pw_name); - else if (rc != 0) { - warn("passwd update"); - return EX_IOERR; - } - - if (cnf->nispasswd && *cnf->nispasswd=='/') { - rc = delnispwent(cnf->nispasswd, a_name->val); - if (rc == -1) - warnx("WARNING: user '%s' does not exist in NIS passwd", pwd->pw_name); - else if (rc != 0) - warn("WARNING: NIS passwd update"); - /* non-fatal */ - } - - grp = GETGRNAM(a_name->val); - if (grp != NULL && - (grp->gr_mem == NULL || *grp->gr_mem == NULL) && - strcmp(a_name->val, grname) == 0) - delgrent(GETGRNAM(a_name->val)); - SETGRENT(); - while ((grp = GETGRENT()) != NULL) { - int i, j; - char group[MAXLOGNAME]; - if (grp->gr_mem != NULL) { - for (i = 0; grp->gr_mem[i] != NULL; i++) { - if (!strcmp(grp->gr_mem[i], a_name->val)) { - for (j = i; grp->gr_mem[j] != NULL; j++) - grp->gr_mem[j] = grp->gr_mem[j+1]; - strlcpy(group, grp->gr_name, MAXLOGNAME); - chggrent(group, grp); - } - } - } - } - ENDGRENT(); - - pw_log(cnf, mode, W_USER, "%s(%ld) account removed", a_name->val, (long) uid); - - if (!PWALTDIR()) { - /* - * Remove mail file - */ - remove(file); - - /* - * Remove at jobs - */ - if (getpwuid(uid) == NULL) - rmat(uid); - - /* - * Remove home directory and contents - */ - if (getarg(args, 'r') != NULL && *home == '/' && getpwuid(uid) == NULL) { - if (stat(home, &st) != -1) { - rm_r(home, uid); - pw_log(cnf, mode, W_USER, "%s(%ld) home '%s' %sremoved", - a_name->val, (long) uid, home, - stat(home, &st) == -1 ? "" : "not completely "); - } - } - } - return EXIT_SUCCESS; - } else if (mode == M_PRINT) - return print_user(pwd, - getarg(args, 'P') != NULL, - getarg(args, '7') != NULL); - - /* - * The rest is edit code - */ - if ((arg = getarg(args, 'l')) != NULL) { - if (strcmp(pwd->pw_name, "root") == 0) - errx(EX_DATAERR, "can't rename `root' account"); - pwd->pw_name = pw_checkname((u_char *)arg->val, 0); - edited = 1; - } - - if ((arg = getarg(args, 'u')) != NULL && isdigit((unsigned char)*arg->val)) { - pwd->pw_uid = (uid_t) atol(arg->val); - edited = 1; - if (pwd->pw_uid != 0 && strcmp(pwd->pw_name, "root") == 0) - errx(EX_DATAERR, "can't change uid of `root' account"); - if (pwd->pw_uid == 0 && strcmp(pwd->pw_name, "root") != 0) - warnx("WARNING: account `%s' will have a uid of 0 (superuser access!)", pwd->pw_name); - } - - if ((arg = getarg(args, 'g')) != NULL && pwd->pw_uid != 0) { /* Already checked this */ - gid_t newgid = (gid_t) GETGRNAM(cnf->default_group)->gr_gid; - if (newgid != pwd->pw_gid) { - edited = 1; - pwd->pw_gid = newgid; - } - } - - if ((arg = getarg(args, 'p')) != NULL) { - if (*arg->val == '\0' || strcmp(arg->val, "0") == 0) { - if (pwd->pw_change != 0) { - pwd->pw_change = 0; - edited = 1; - } - } - else { - time_t now = time(NULL); - time_t expire = parse_date(now, arg->val); - - if (pwd->pw_change != expire) { - pwd->pw_change = expire; - edited = 1; - } - } - } - - if ((arg = getarg(args, 'e')) != NULL) { - if (*arg->val == '\0' || strcmp(arg->val, "0") == 0) { - if (pwd->pw_expire != 0) { - pwd->pw_expire = 0; - edited = 1; - } - } - else { - time_t now = time(NULL); - time_t expire = parse_date(now, arg->val); - - if (pwd->pw_expire != expire) { - pwd->pw_expire = expire; - edited = 1; - } - } - } - - if ((arg = getarg(args, 's')) != NULL) { - char *shell = shell_path(cnf->shelldir, cnf->shells, arg->val); - if (shell == NULL) - shell = ""; - if (strcmp(shell, pwd->pw_shell) != 0) { - pwd->pw_shell = shell; - edited = 1; - } - } - - if (getarg(args, 'L')) { - if (cnf->default_class == NULL) - cnf->default_class = ""; - if (strcmp(pwd->pw_class, cnf->default_class) != 0) { - pwd->pw_class = cnf->default_class; - edited = 1; - } - } - - if ((arg = getarg(args, 'd')) != NULL) { - if (strcmp(pwd->pw_dir, arg->val)) - edited = 1; - if (stat(pwd->pw_dir = arg->val, &st) == -1) { - if (getarg(args, 'm') == NULL && strcmp(pwd->pw_dir, "/nonexistent") != 0) - warnx("WARNING: home `%s' does not exist", pwd->pw_dir); - } else if (!S_ISDIR(st.st_mode)) - warnx("WARNING: home `%s' is not a directory", pwd->pw_dir); - } - - if ((arg = getarg(args, 'w')) != NULL && - getarg(args, 'h') == NULL && getarg(args, 'H') == NULL) { - login_cap_t *lc; - - lc = login_getpwclass(pwd); - if (lc == NULL || - login_setcryptfmt(lc, "sha512", NULL) == NULL) - warn("setting crypt(3) format"); - login_close(lc); - pwd->pw_passwd = pw_password(cnf, args, pwd->pw_name); - edited = 1; + if ((istty = isatty(fd))) { + if (tcgetattr(fd, &t) == -1) + istty = 0; + else { + n = t; + n.c_lflag &= ~(ECHO); + tcsetattr(fd, TCSANOW, &n); + printf("%s%spassword for user %s:", + update ? "new " : "", + precrypted ? "encrypted " : "", + pwd->pw_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_IOERR, "-%c file descriptor", + precrypted ? 'H' : 'h'); + line[b] = '\0'; + if ((p = strpbrk(line, "\r\n")) != NULL) + *p = '\0'; + if (!*line) + errx(EX_DATAERR, "empty password read on file descriptor %d", + fd); + if (precrypted) { + if (strchr(line, ':') != NULL) + errx(EX_DATAERR, "bad encrypted password"); + pwd->pw_passwd = strdup(line); } else { - login_cap_t *lc; - - /* - * Add code - */ - - if (a_name == NULL) /* Required */ - errx(EX_DATAERR, "login name required"); - else if ((pwd = GETPWNAM(a_name->val)) != NULL) /* Exists */ - errx(EX_DATAERR, "login name `%s' already exists", a_name->val); - - /* - * Now, set up defaults for a new user - */ - pwd = &fakeuser; - pwd->pw_name = a_name->val; - pwd->pw_class = cnf->default_class ? cnf->default_class : ""; - pwd->pw_uid = pw_uidpolicy(cnf, args); - pwd->pw_gid = pw_gidpolicy(cnf, args, pwd->pw_name, (gid_t) pwd->pw_uid); - pwd->pw_change = pw_pwdpolicy(cnf, args); - pwd->pw_expire = pw_exppolicy(cnf, args); - pwd->pw_dir = pw_homepolicy(cnf, args, pwd->pw_name); - pwd->pw_shell = pw_shellpolicy(cnf, args, NULL); lc = login_getpwclass(pwd); - if (lc == NULL || login_setcryptfmt(lc, "sha512", NULL) == NULL) + if (lc == NULL || + login_setcryptfmt(lc, "sha512", NULL) == NULL) warn("setting crypt(3) format"); login_close(lc); - pwd->pw_passwd = pw_password(cnf, args, pwd->pw_name); - edited = 1; - - if (pwd->pw_uid == 0 && strcmp(pwd->pw_name, "root") != 0) - warnx("WARNING: new account `%s' has a uid of 0 (superuser access!)", pwd->pw_name); + pwd->pw_passwd = pw_pwcrypt(line); } + return (1); +} - /* - * Shared add/edit code - */ - if ((arg = getarg(args, 'c')) != NULL) { - char *gecos = pw_checkname((u_char *)arg->val, 1); - if (strcmp(pwd->pw_gecos, gecos) != 0) { - pwd->pw_gecos = gecos; - edited = 1; - } +static void +perform_chgpwent(const char *name, struct passwd *pwd, char *nispasswd) +{ + int rc; + struct passwd *nispwd; + + /* duplicate for nis so that chgpwent is not modifying before NIS */ + if (nispasswd && *nispasswd == '/') + nispwd = pw_dup(pwd); + + rc = chgpwent(name, pwd); + if (rc == -1) + errx(EX_IOERR, "user '%s' does not exist (NIS?)", pwd->pw_name); + else if (rc != 0) + err(EX_IOERR, "passwd file update"); + + if (nispasswd && *nispasswd == '/') { + rc = chgnispwent(nispasswd, name, nispwd); + if (rc == -1) + warn("User '%s' not found in NIS passwd", pwd->pw_name); + else if (rc != 0) + warn("NIS passwd update"); + /* NOTE: NIS-only update errors are not fatal */ } +} - if ((arg = getarg(args, 'h')) != NULL || - (arg = getarg(args, 'H')) != NULL) { - if (strcmp(arg->val, "-") == 0) { - if (!pwd->pw_passwd || *pwd->pw_passwd != '*') { - pwd->pw_passwd = "*"; /* No access */ - edited = 1; - } - } else { - int fd = atoi(arg->val); - int precrypt = (arg->ch == 'H'); - int b; - int istty = isatty(fd); - struct termios t; - login_cap_t *lc; - - 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("%s%spassword for user %s:", - (mode == M_UPDATE) ? "new " : "", - precrypt ? "encrypted " : "", - pwd->pw_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("-%c file descriptor", precrypt ? 'H' : - 'h'); - return EX_IOERR; - } - line[b] = '\0'; - if ((p = strpbrk(line, "\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; - pwd->pw_passwd = line; - } else { - lc = login_getpwclass(pwd); - if (lc == NULL || - login_setcryptfmt(lc, "sha512", NULL) == NULL) - warn("setting crypt(3) format"); - login_close(lc); - pwd->pw_passwd = pw_pwcrypt(line); - } - edited = 1; - } +/* + * The M_LOCK and M_UNLOCK functions simply add or remove + * a "*LOCKED*" prefix from in front of the password to + * prevent it decoding correctly, and therefore prevents + * access. Of course, this only prevents access via + * password authentication (not ssh, kerberos or any + * other method that does not use the UNIX password) but + * that is a known limitation. + */ +static int +pw_userlock(char *arg1, int mode) +{ + struct passwd *pwd = NULL; + char *passtmp = NULL; + char *name; + bool locked = false; + uid_t id = (uid_t)-1; + + if (geteuid() != 0) + errx(EX_NOPERM, "you must be root"); + + if (arg1 == NULL) + errx(EX_DATAERR, "username or id required"); + + name = arg1; + if (arg1[strspn(name, "0123456789")] == '\0') + id = pw_checkid(name, UID_MAX); + + pwd = GETPWNAM(pw_checkname(name, 0)); + if (pwd == NULL && id != (uid_t)-1) { + pwd = GETPWUID(id); + if (pwd != NULL) + name = pwd->pw_name; } - - /* - * Special case: -N only displays & exits - */ - if (getarg(args, 'N') != NULL) - return print_user(pwd, - getarg(args, 'P') != NULL, - getarg(args, '7') != NULL); - - if (mode == M_ADD) { - edited = 1; /* Always */ - rc = addpwent(pwd); - if (rc == -1) { - warnx("user '%s' already exists", pwd->pw_name); - return EX_IOERR; - } else if (rc != 0) { - warn("passwd file update"); - return EX_IOERR; - } - if (cnf->nispasswd && *cnf->nispasswd=='/') { - rc = addnispwent(cnf->nispasswd, pwd); - if (rc == -1) - warnx("User '%s' already exists in NIS passwd", pwd->pw_name); - else - warn("NIS passwd update"); - /* NOTE: we treat NIS-only update errors as non-fatal */ - } - } else if (mode == M_UPDATE || mode == M_LOCK || mode == M_UNLOCK) { - if (edited) { /* Only updated this if required */ - rc = chgpwent(a_name->val, pwd); - if (rc == -1) { - warnx("user '%s' does not exist (NIS?)", pwd->pw_name); - return EX_IOERR; - } else if (rc != 0) { - warn("passwd file update"); - return EX_IOERR; - } - if ( cnf->nispasswd && *cnf->nispasswd=='/') { - rc = chgnispwent(cnf->nispasswd, a_name->val, pwd); - if (rc == -1) - warn("User '%s' not found in NIS passwd", pwd->pw_name); - else - warn("NIS passwd update"); - /* NOTE: NIS-only update errors are not fatal */ - } - } + if (pwd == NULL) { + if (id == (uid_t)-1) + errx(EX_NOUSER, "no such name or uid `%ju'", (uintmax_t) id); + errx(EX_NOUSER, "no such user `%s'", name); } - /* - * Ok, user is created or changed - now edit group file - */ - - if (mode == M_ADD || getarg(args, 'G') != NULL) { - int i, j; - /* First remove the user from all group */ - SETGRENT(); - while ((grp = GETGRENT()) != NULL) { - char group[MAXLOGNAME]; - if (grp->gr_mem == NULL) - continue; - for (i = 0; grp->gr_mem[i] != NULL; i++) { - if (strcmp(grp->gr_mem[i] , pwd->pw_name) != 0) - continue; - for (j = i; grp->gr_mem[j] != NULL ; j++) - grp->gr_mem[j] = grp->gr_mem[j+1]; - strlcpy(group, grp->gr_name, MAXLOGNAME); - chggrent(group, grp); - } - } - ENDGRENT(); - - /* now add to group where needed */ - for (i = 0; cnf->groups[i] != NULL; i++) { - grp = GETGRNAM(cnf->groups[i]); - grp = gr_add(grp, pwd->pw_name); - /* - * grp can only be NULL in 2 cases: - * - the new member is already a member - * - a problem with memory occurs - * in both cases we want to skip now. - */ - if (grp == NULL) - continue; - chggrent(cnf->groups[i], grp); - free(grp); - } + if (name == NULL) + name = pwd->pw_name; + + if (strncmp(pwd->pw_passwd, locked_str, sizeof(locked_str) -1) == 0) + locked = true; + if (mode == M_LOCK && locked) + errx(EX_DATAERR, "user '%s' is already locked", pwd->pw_name); + if (mode == M_UNLOCK && !locked) + errx(EX_DATAERR, "user '%s' is not locked", pwd->pw_name); + + if (mode == M_LOCK) { + asprintf(&passtmp, "%s%s", locked_str, pwd->pw_passwd); + if (passtmp == NULL) /* disaster */ + errx(EX_UNAVAILABLE, "out of memory"); + pwd->pw_passwd = passtmp; + } else { + pwd->pw_passwd += sizeof(locked_str)-1; } + perform_chgpwent(name, pwd, NULL); + free(passtmp); - /* go get a current version of pwd */ - pwd = GETPWNAM(a_name->val); - if (pwd == NULL) { - /* This will fail when we rename, so special case that */ - if (mode == M_UPDATE && (arg = getarg(args, 'l')) != NULL) { - a_name->val = arg->val; /* update new name */ - pwd = GETPWNAM(a_name->val); /* refetch renamed rec */ - } - } - if (pwd == NULL) /* can't go on without this */ - errx(EX_NOUSER, "user '%s' disappeared during update", a_name->val); + return (EXIT_SUCCESS); +} - grp = GETGRGID(pwd->pw_gid); - pw_log(cnf, mode, W_USER, "%s(%ld):%s(%ld):%s:%s:%s", - pwd->pw_name, (long) pwd->pw_uid, - grp ? grp->gr_name : "unknown", (long) (grp ? grp->gr_gid : -1), - pwd->pw_gecos, pwd->pw_dir, pwd->pw_shell); +static uid_t +pw_uidpolicy(struct userconf * cnf, intmax_t id) +{ + struct passwd *pwd; + struct bitmap bm; + uid_t uid = (uid_t) - 1; /* - * If adding, let's touch and chown the user's mail file. This is not - * strictly necessary under BSD with a 0755 maildir but it also - * doesn't hurt anything to create the empty mailfile + * Check the given uid, if any */ - if (mode == M_ADD) { - if (!PWALTDIR()) { - sprintf(line, "%s/%s", _PATH_MAILDIR, pwd->pw_name); - close(open(line, O_RDWR | O_CREAT, 0600)); /* Preserve contents & - * mtime */ - chown(line, pwd->pw_uid, pwd->pw_gid); - } - } + if (id >= 0) { + uid = (uid_t) id; + if ((pwd = GETPWUID(uid)) != NULL && conf.checkduplicate) + errx(EX_DATAERR, "uid `%ju' has already been allocated", + (uintmax_t)pwd->pw_uid); + return (uid); + } /* - * Let's create and populate the user's home directory. Note - * that this also `works' for editing users if -m is used, but - * existing files will *not* be overwritten. + * We need to allocate the next available uid under one of + * two policies a) Grab the first unused uid b) Grab the + * highest possible unused uid */ - if (!PWALTDIR() && getarg(args, 'm') != NULL && pwd->pw_dir && *pwd->pw_dir == '/' && pwd->pw_dir[1]) { - copymkdir(pwd->pw_dir, cnf->dotdir, cnf->homemode, pwd->pw_uid, pwd->pw_gid); - pw_log(cnf, mode, W_USER, "%s(%ld) home %s made", - pwd->pw_name, (long) pwd->pw_uid, pwd->pw_dir); + if (cnf->min_uid >= cnf->max_uid) { /* Sanity + * claus^H^H^H^Hheck */ + cnf->min_uid = 1000; + cnf->max_uid = 32000; } - + bm = bm_alloc(cnf->max_uid - cnf->min_uid + 1); /* - * Finally, send mail to the new user as well, if we are asked to + * Now, let's fill the bitmap from the password file */ - if (mode == M_ADD && !PWALTDIR() && cnf->newmail && *cnf->newmail && (fp = fopen(cnf->newmail, "r")) != NULL) { - FILE *pfp = popen(_PATH_SENDMAIL " -t", "w"); - - if (pfp == NULL) - warn("sendmail"); - else { - fprintf(pfp, "From: root\n" "To: %s\n" "Subject: Welcome!\n\n", pwd->pw_name); - while (fgets(line, sizeof(line), fp) != NULL) { - /* Do substitutions? */ - fputs(line, pfp); - } - pclose(pfp); - pw_log(cnf, mode, W_USER, "%s(%ld) new user mail sent", - pwd->pw_name, (long) pwd->pw_uid); - } - fclose(fp); - } - - return EXIT_SUCCESS; -} - - -static uid_t -pw_uidpolicy(struct userconf * cnf, struct cargs * args) -{ - struct passwd *pwd; - uid_t uid = (uid_t) - 1; - struct carg *a_uid = getarg(args, 'u'); + SETPWENT(); + while ((pwd = GETPWENT()) != NULL) + if (pwd->pw_uid >= (uid_t) cnf->min_uid && pwd->pw_uid <= (uid_t) cnf->max_uid) + bm_setbit(&bm, pwd->pw_uid - cnf->min_uid); + ENDPWENT(); /* - * Check the given uid, if any + * Then apply the policy, with fallback to reuse if necessary */ - if (a_uid != NULL) { - uid = (uid_t) atol(a_uid->val); - - if ((pwd = GETPWUID(uid)) != NULL && getarg(args, 'o') == NULL) - errx(EX_DATAERR, "uid `%ld' has already been allocated", (long) pwd->pw_uid); - } else { - struct bitmap bm; - - /* - * We need to allocate the next available uid under one of - * two policies a) Grab the first unused uid b) Grab the - * highest possible unused uid - */ - if (cnf->min_uid >= cnf->max_uid) { /* Sanity - * claus^H^H^H^Hheck */ - cnf->min_uid = 1000; - cnf->max_uid = 32000; - } - bm = bm_alloc(cnf->max_uid - cnf->min_uid + 1); - - /* - * Now, let's fill the bitmap from the password file - */ - SETPWENT(); - while ((pwd = GETPWENT()) != NULL) - if (pwd->pw_uid >= (uid_t) cnf->min_uid && pwd->pw_uid <= (uid_t) cnf->max_uid) - bm_setbit(&bm, pwd->pw_uid - cnf->min_uid); - ENDPWENT(); - - /* - * Then apply the policy, with fallback to reuse if necessary - */ - if (cnf->reuse_uids || (uid = (uid_t) (bm_lastset(&bm) + cnf->min_uid + 1)) > cnf->max_uid) - uid = (uid_t) (bm_firstunset(&bm) + cnf->min_uid); + if (cnf->reuse_uids || (uid = (uid_t) (bm_lastset(&bm) + cnf->min_uid + 1)) > cnf->max_uid) + uid = (uid_t) (bm_firstunset(&bm) + cnf->min_uid); - /* - * Another sanity check - */ - if (uid < cnf->min_uid || uid > cnf->max_uid) - errx(EX_SOFTWARE, "unable to allocate a new uid - range fully used"); - bm_dealloc(&bm); - } - return uid; + /* + * Another sanity check + */ + if (uid < cnf->min_uid || uid > cnf->max_uid) + errx(EX_SOFTWARE, "unable to allocate a new uid - range fully used"); + bm_dealloc(&bm); + return (uid); } - -static uid_t -pw_gidpolicy(struct userconf * cnf, struct cargs * args, char *nam, gid_t prefer) +static uid_t +pw_gidpolicy(struct userconf *cnf, char *grname, char *nam, gid_t prefer, bool dryrun) { struct group *grp; gid_t gid = (uid_t) - 1; - struct carg *a_gid = getarg(args, 'g'); - - /* - * If no arg given, see if default can help out - */ - if (a_gid == NULL && cnf->default_group && *cnf->default_group) - a_gid = addarg(args, 'g', cnf->default_group); /* * Check the given gid, if any */ SETGRENT(); - if (a_gid != NULL) { - if ((grp = GETGRNAM(a_gid->val)) == NULL) { - gid = (gid_t) atol(a_gid->val); - if ((gid == 0 && !isdigit((unsigned char)*a_gid->val)) || (grp = GETGRGID(gid)) == NULL) - errx(EX_NOUSER, "group `%s' is not defined", a_gid->val); + if (grname) { + if ((grp = GETGRNAM(grname)) == NULL) { + gid = pw_checkid(grname, GID_MAX); + grp = GETGRGID(gid); } gid = grp->gr_gid; } else if ((grp = GETGRNAM(nam)) != NULL && (grp->gr_mem == NULL || grp->gr_mem[0] == NULL)) { gid = grp->gr_gid; /* Already created? Use it anyway... */ } else { - struct cargs grpargs; - char tmp[32]; - - LIST_INIT(&grpargs); - addarg(&grpargs, 'n', nam); + intmax_t grid = -1; /* * We need to auto-create a group with the user's name. We @@ -958,84 +406,38 @@ pw_gidpolicy(struct userconf * cnf, struct cargs * args, char *nam, gid_t prefer * user's name dups an existing group, then the group add * function will happily handle that case for us and exit. */ - if (GETGRGID(prefer) == NULL) { - sprintf(tmp, "%lu", (unsigned long) prefer); - addarg(&grpargs, 'g', tmp); - } - if (getarg(args, 'N')) - { - addarg(&grpargs, 'N', NULL); - addarg(&grpargs, 'q', NULL); - gid = pw_group(cnf, M_NEXT, &grpargs); - } - else - { - pw_group(cnf, M_ADD, &grpargs); + if (GETGRGID(prefer) == NULL) + grid = prefer; + if (dryrun) { + gid = pw_groupnext(cnf, true); + } else { + if (grid == -1) + grid = pw_groupnext(cnf, true); + groupadd(cnf, nam, grid, NULL, -1, false, false, false); if ((grp = GETGRNAM(nam)) != NULL) gid = grp->gr_gid; } - a_gid = LIST_FIRST(&grpargs); - while (a_gid != NULL) { - struct carg *t = LIST_NEXT(a_gid, list); - LIST_REMOVE(a_gid, list); - a_gid = t; - } } ENDGRENT(); - return gid; + return (gid); } - -static time_t -pw_pwdpolicy(struct userconf * cnf, struct cargs * args) -{ - time_t result = 0; - time_t now = time(NULL); - struct carg *arg = getarg(args, 'p'); - - if (arg != NULL) { - if ((result = parse_date(now, arg->val)) == now) - errx(EX_DATAERR, "invalid date/time `%s'", arg->val); - } else if (cnf->password_days > 0) - result = now + ((long) cnf->password_days * 86400L); - return result; -} - - -static time_t -pw_exppolicy(struct userconf * cnf, struct cargs * args) +static char * +pw_homepolicy(struct userconf * cnf, char *homedir, const char *user) { - time_t result = 0; - time_t now = time(NULL); - struct carg *arg = getarg(args, 'e'); - - if (arg != NULL) { - if ((result = parse_date(now, arg->val)) == now) - errx(EX_DATAERR, "invalid date/time `%s'", arg->val); - } else if (cnf->expire_days > 0) - result = now + ((long) cnf->expire_days * 86400L); - return result; -} + static char home[128]; + if (homedir) + return (homedir); -static char * -pw_homepolicy(struct userconf * cnf, struct cargs * args, char const * user) -{ - struct carg *arg = getarg(args, 'd'); + if (cnf->home == NULL || *cnf->home == '\0') + errx(EX_CONFIG, "no base home directory set"); + snprintf(home, sizeof(home), "%s/%s", cnf->home, user); - if (arg) - return arg->val; - else { - static char home[128]; - - if (cnf->home == NULL || *cnf->home == '\0') - errx(EX_CONFIG, "no base home directory set"); - sprintf(home, "%s/%s", cnf->home, user); - return home; - } + return (home); } -static char * +static char * shell_path(char const * path, char *shells[], char *sh) { if (sh != NULL && (*sh == '/' || *sh == '\0')) @@ -1053,12 +455,12 @@ shell_path(char const * path, char *shells[], char *sh) static char shellpath[256]; if (sh != NULL) { - sprintf(shellpath, "%s/%s", p, sh); + snprintf(shellpath, sizeof(shellpath), "%s/%s", p, sh); if (access(shellpath, X_OK) == 0) return shellpath; } else for (i = 0; i < _UC_MAXSHELLS && shells[i] != NULL; i++) { - sprintf(shellpath, "%s/%s", p, shells[i]); + snprintf(shellpath, sizeof(shellpath), "%s/%s", p, shells[i]); if (access(shellpath, X_OK) == 0) return shellpath; } @@ -1070,29 +472,23 @@ shell_path(char const * path, char *shells[], char *sh) } } - -static char * -pw_shellpolicy(struct userconf * cnf, struct cargs * args, char *newshell) +static char * +pw_shellpolicy(struct userconf * cnf) { - char *sh = newshell; - struct carg *arg = getarg(args, 's'); - if (newshell == NULL && arg != NULL) - sh = arg->val; - return shell_path(cnf->shelldir, cnf->shells, sh ? sh : cnf->shell_default); + return shell_path(cnf->shelldir, cnf->shells, cnf->shell_default); } #define SALTSIZE 32 static char const chars[] = "0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ./"; -char * +char * pw_pwcrypt(char *password) { int i; char salt[SALTSIZE + 1]; char *cryptpw; - static char buf[256]; /* @@ -1108,9 +504,8 @@ pw_pwcrypt(char *password) return strcpy(buf, cryptpw); } - -static char * -pw_password(struct userconf * cnf, struct cargs * args, char const * user) +static char * +pw_password(struct userconf * cnf, char const * user, bool dryrun) { int i, l; char pwbuf[32]; @@ -1125,8 +520,7 @@ pw_password(struct userconf * cnf, struct cargs * args, char const * user) /* * We give this information back to the user */ - if (getarg(args, 'h') == NULL && getarg(args, 'H') == NULL && - getarg(args, 'N') == NULL) { + if (conf.fd == -1 && !dryrun) { if (isatty(STDOUT_FILENO)) printf("Password for '%s' is: ", user); printf("%s\n", pwbuf); @@ -1148,95 +542,86 @@ pw_password(struct userconf * cnf, struct cargs * args, char const * user) return pw_pwcrypt(pwbuf); } - static int -print_user(struct passwd * pwd, int pretty, int v7) +print_user(struct passwd * pwd, bool pretty, bool v7) { - if (!pretty) { - char *buf; + int j; + char *p; + struct group *grp = GETGRGID(pwd->pw_gid); + char uname[60] = "User &", office[60] = "[None]", + wphone[60] = "[None]", hphone[60] = "[None]"; + char acexpire[32] = "[None]", pwexpire[32] = "[None]"; + struct tm * tptr; - if (!v7) - pwd->pw_passwd = (pwd->pw_passwd == NULL) ? "" : "*"; + if (!pretty) { + p = v7 ? pw_make_v7(pwd) : pw_make(pwd); + printf("%s\n", p); + free(p); + return (EXIT_SUCCESS); + } - buf = v7 ? pw_make_v7(pwd) : pw_make(pwd); - printf("%s\n", buf); - free(buf); - } else { - int j; - char *p; - struct group *grp = GETGRGID(pwd->pw_gid); - char uname[60] = "User &", office[60] = "[None]", - wphone[60] = "[None]", hphone[60] = "[None]"; - char acexpire[32] = "[None]", pwexpire[32] = "[None]"; - struct tm * tptr; - - if ((p = strtok(pwd->pw_gecos, ",")) != NULL) { - strlcpy(uname, p, sizeof(uname)); + if ((p = strtok(pwd->pw_gecos, ",")) != NULL) { + strlcpy(uname, p, sizeof(uname)); + if ((p = strtok(NULL, ",")) != NULL) { + strlcpy(office, p, sizeof(office)); if ((p = strtok(NULL, ",")) != NULL) { - strlcpy(office, p, sizeof(office)); - if ((p = strtok(NULL, ",")) != NULL) { - strlcpy(wphone, p, sizeof(wphone)); - if ((p = strtok(NULL, "")) != NULL) { - strlcpy(hphone, p, - sizeof(hphone)); - } + strlcpy(wphone, p, sizeof(wphone)); + if ((p = strtok(NULL, "")) != NULL) { + strlcpy(hphone, p, sizeof(hphone)); } } } - /* - * Handle '&' in gecos field - */ - if ((p = strchr(uname, '&')) != NULL) { - int l = strlen(pwd->pw_name); - int m = strlen(p); + } + /* + * Handle '&' in gecos field + */ + if ((p = strchr(uname, '&')) != NULL) { + int l = strlen(pwd->pw_name); + int m = strlen(p); - memmove(p + l, p + 1, m); - memmove(p, pwd->pw_name, l); - *p = (char) toupper((unsigned char)*p); - } - if (pwd->pw_expire > (time_t)0 && (tptr = localtime(&pwd->pw_expire)) != NULL) - strftime(acexpire, sizeof acexpire, "%c", tptr); + memmove(p + l, p + 1, m); + memmove(p, pwd->pw_name, l); + *p = (char) toupper((unsigned char)*p); + } + if (pwd->pw_expire > (time_t)0 && (tptr = localtime(&pwd->pw_expire)) != NULL) + strftime(acexpire, sizeof acexpire, "%c", tptr); if (pwd->pw_change > (time_t)0 && (tptr = localtime(&pwd->pw_change)) != NULL) - strftime(pwexpire, sizeof pwexpire, "%c", tptr); - printf("Login Name: %-15s #%-12ld Group: %-15s #%ld\n" - " Full Name: %s\n" - " Home: %-26.26s Class: %s\n" - " Shell: %-26.26s Office: %s\n" - "Work Phone: %-26.26s Home Phone: %s\n" - "Acc Expire: %-26.26s Pwd Expire: %s\n", - pwd->pw_name, (long) pwd->pw_uid, - grp ? grp->gr_name : "(invalid)", (long) pwd->pw_gid, - uname, pwd->pw_dir, pwd->pw_class, - pwd->pw_shell, office, wphone, hphone, - acexpire, pwexpire); - SETGRENT(); - j = 0; - while ((grp=GETGRENT()) != NULL) - { - int i = 0; - if (grp->gr_mem != NULL) { - while (grp->gr_mem[i] != NULL) - { - if (strcmp(grp->gr_mem[i], pwd->pw_name)==0) - { - printf(j++ == 0 ? " Groups: %s" : ",%s", grp->gr_name); - break; - } - ++i; + strftime(pwexpire, sizeof pwexpire, "%c", tptr); + printf("Login Name: %-15s #%-12ju Group: %-15s #%ju\n" + " Full Name: %s\n" + " Home: %-26.26s Class: %s\n" + " Shell: %-26.26s Office: %s\n" + "Work Phone: %-26.26s Home Phone: %s\n" + "Acc Expire: %-26.26s Pwd Expire: %s\n", + pwd->pw_name, (uintmax_t)pwd->pw_uid, + grp ? grp->gr_name : "(invalid)", (uintmax_t)pwd->pw_gid, + uname, pwd->pw_dir, pwd->pw_class, + pwd->pw_shell, office, wphone, hphone, + acexpire, pwexpire); + SETGRENT(); + j = 0; + while ((grp=GETGRENT()) != NULL) { + int i = 0; + if (grp->gr_mem != NULL) { + while (grp->gr_mem[i] != NULL) { + if (strcmp(grp->gr_mem[i], pwd->pw_name)==0) { + printf(j++ == 0 ? " Groups: %s" : ",%s", grp->gr_name); + break; } + ++i; } } - ENDGRENT(); - printf("%s", j ? "\n" : ""); } - return EXIT_SUCCESS; + ENDGRENT(); + printf("%s", j ? "\n" : ""); + return (EXIT_SUCCESS); } -char * -pw_checkname(u_char *name, int gecos) +char * +pw_checkname(char *name, int gecos) { char showch[8]; - u_char const *badchars, *ch, *showtype; + const char *badchars, *ch, *showtype; int reject; ch = name; @@ -1255,7 +640,8 @@ pw_checkname(u_char *name, int gecos) } if (!reject) { while (*ch) { - if (strchr(badchars, *ch) != NULL || *ch < ' ' || + if (strchr(badchars, *ch) != NULL || + (!gecos && *ch < ' ') || *ch == 127) { reject = 1; break; @@ -1285,11 +671,11 @@ pw_checkname(u_char *name, int gecos) showch, (ch - name), showtype); } if (!gecos && (ch - name) > LOGNAMESIZE) - errx(EX_DATAERR, "name too long `%s' (max is %d)", name, + errx(EX_USAGE, "name too long `%s' (max is %d)", name, LOGNAMESIZE); - return (char *)name; -} + return (name); +} static void rmat(uid_t uid) @@ -1308,7 +694,8 @@ rmat(uid_t uid) st.st_uid == uid) { char tmp[MAXPATHLEN]; - sprintf(tmp, "/usr/bin/atrm %s", e->d_name); + snprintf(tmp, sizeof(tmp), "/usr/bin/atrm %s", + e->d_name); system(tmp); } } @@ -1319,27 +706,1106 @@ rmat(uid_t uid) static void rmopie(char const * name) { - static const char etcopie[] = "/etc/opiekeys"; - FILE *fp = fopen(etcopie, "r+"); - - if (fp != NULL) { - char tmp[1024]; - off_t atofs = 0; - int length = strlen(name); - - while (fgets(tmp, sizeof tmp, fp) != NULL) { - if (strncmp(name, tmp, length) == 0 && tmp[length]==' ') { - if (fseek(fp, atofs, SEEK_SET) == 0) { - fwrite("#", 1, 1, fp); /* Comment username out */ - } - break; + char tmp[1014]; + FILE *fp; + int fd; + size_t len; + off_t atofs = 0; + + if ((fd = openat(conf.rootfd, "etc/opiekeys", O_RDWR)) == -1) + return; + + fp = fdopen(fd, "r+"); + len = strlen(name); + + while (fgets(tmp, sizeof(tmp), fp) != NULL) { + if (strncmp(name, tmp, len) == 0 && tmp[len]==' ') { + /* Comment username out */ + if (fseek(fp, atofs, SEEK_SET) == 0) + fwrite("#", 1, 1, fp); + break; + } + atofs = ftell(fp); + } + /* + * If we got an error of any sort, don't update! + */ + fclose(fp); +} + +int +pw_user_next(int argc, char **argv, char *name __unused) +{ + struct userconf *cnf = NULL; + const char *cfg = NULL; + int ch; + bool quiet = false; + uid_t next; + + while ((ch = getopt(argc, argv, "C:q")) != -1) { + switch (ch) { + case 'C': + cfg = optarg; + break; + case 'q': + quiet = true; + break; + } + } + + if (quiet) + freopen(_PATH_DEVNULL, "w", stderr); + + cnf = get_userconfig(cfg); + + next = pw_uidpolicy(cnf, -1); + + printf("%ju:", (uintmax_t)next); + pw_groupnext(cnf, quiet); + + return (EXIT_SUCCESS); +} + +int +pw_user_show(int argc, char **argv, char *arg1) +{ + struct passwd *pwd = NULL; + char *name = NULL; + intmax_t id = -1; + int ch; + bool all = false; + bool pretty = false; + bool force = false; + bool v7 = false; + bool quiet = false; + + if (arg1 != NULL) { + if (arg1[strspn(arg1, "0123456789")] == '\0') + id = pw_checkid(arg1, UID_MAX); + else + name = arg1; + } + + while ((ch = getopt(argc, argv, "C:qn:u:FPa7")) != -1) { + switch (ch) { + case 'C': + /* ignore compatibility */ + break; + case 'q': + quiet = true; + break; + case 'n': + name = optarg; + break; + case 'u': + id = pw_checkid(optarg, UID_MAX); + break; + case 'F': + force = true; + break; + case 'P': + pretty = true; + break; + case 'a': + all = true; + break; + case '7': + v7 = true; + break; + } + } + + if (quiet) + freopen(_PATH_DEVNULL, "w", stderr); + + if (all) { + SETPWENT(); + while ((pwd = GETPWENT()) != NULL) + print_user(pwd, pretty, v7); + ENDPWENT(); + return (EXIT_SUCCESS); + } + + if (id < 0 && name == NULL) + errx(EX_DATAERR, "username or id required"); + + pwd = (name != NULL) ? GETPWNAM(pw_checkname(name, 0)) : GETPWUID(id); + if (pwd == NULL) { + if (force) { + pwd = &fakeuser; + } else { + if (name == NULL) + errx(EX_NOUSER, "no such uid `%ju'", + (uintmax_t) id); + errx(EX_NOUSER, "no such user `%s'", name); + } + } + + return (print_user(pwd, pretty, v7)); +} + +int +pw_user_del(int argc, char **argv, char *arg1) +{ + struct userconf *cnf = NULL; + struct passwd *pwd = NULL; + struct group *gr, *grp; + char *name = NULL; + char grname[MAXLOGNAME]; + char *nispasswd = NULL; + char file[MAXPATHLEN]; + char home[MAXPATHLEN]; + const char *cfg = NULL; + struct stat st; + intmax_t id = -1; + int ch, rc; + bool nis = false; + bool deletehome = false; + bool quiet = false; + + if (arg1 != NULL) { + if (arg1[strspn(arg1, "0123456789")] == '\0') + id = pw_checkid(arg1, UID_MAX); + else + name = arg1; + } + + while ((ch = getopt(argc, argv, "C:qn:u:rYy:")) != -1) { + switch (ch) { + case 'C': + cfg = optarg; + break; + case 'q': + quiet = true; + break; + case 'n': + name = optarg; + break; + case 'u': + id = pw_checkid(optarg, UID_MAX); + break; + case 'r': + deletehome = true; + break; + case 'y': + nispasswd = optarg; + break; + case 'Y': + nis = true; + break; + } + } + + if (quiet) + freopen(_PATH_DEVNULL, "w", stderr); + + if (id < 0 && name == NULL) + errx(EX_DATAERR, "username or id required"); + + cnf = get_userconfig(cfg); + + if (nispasswd == NULL) + nispasswd = cnf->nispasswd; + + pwd = (name != NULL) ? GETPWNAM(pw_checkname(name, 0)) : GETPWUID(id); + if (pwd == NULL) { + if (name == NULL) + errx(EX_NOUSER, "no such uid `%ju'", (uintmax_t) id); + errx(EX_NOUSER, "no such user `%s'", name); + } + + if (PWF._altdir == PWF_REGULAR && + ((pwd->pw_fields & _PWF_SOURCE) != _PWF_FILES)) { + if ((pwd->pw_fields & _PWF_SOURCE) == _PWF_NIS) { + if (!nis && nispasswd && *nispasswd != '/') + errx(EX_NOUSER, "Cannot remove NIS user `%s'", + name); + } else { + errx(EX_NOUSER, "Cannot remove non local user `%s'", + name); + } + } + + id = pwd->pw_uid; + if (name == NULL) + name = pwd->pw_name; + + if (strcmp(pwd->pw_name, "root") == 0) + errx(EX_DATAERR, "cannot remove user 'root'"); + + /* Remove opie record from /etc/opiekeys */ + if (PWALTDIR() != PWF_ALT) + rmopie(pwd->pw_name); + + if (!PWALTDIR()) { + /* Remove crontabs */ + snprintf(file, sizeof(file), "/var/cron/tabs/%s", pwd->pw_name); + if (access(file, F_OK) == 0) { + snprintf(file, sizeof(file), "crontab -u %s -r", + pwd->pw_name); + system(file); + } + } + + /* + * Save these for later, since contents of pwd may be + * invalidated by deletion + */ + snprintf(file, sizeof(file), "%s/%s", _PATH_MAILDIR, pwd->pw_name); + strlcpy(home, pwd->pw_dir, sizeof(home)); + gr = GETGRGID(pwd->pw_gid); + if (gr != NULL) + strlcpy(grname, gr->gr_name, LOGNAMESIZE); + else + grname[0] = '\0'; + + rc = delpwent(pwd); + if (rc == -1) + err(EX_IOERR, "user '%s' does not exist", pwd->pw_name); + else if (rc != 0) + err(EX_IOERR, "passwd update"); + + if (nis && nispasswd && *nispasswd=='/') { + rc = delnispwent(nispasswd, name); + if (rc == -1) + warnx("WARNING: user '%s' does not exist in NIS passwd", + pwd->pw_name); + else if (rc != 0) + warn("WARNING: NIS passwd update"); + } + + grp = GETGRNAM(name); + if (grp != NULL && + (grp->gr_mem == NULL || *grp->gr_mem == NULL) && + strcmp(name, grname) == 0) + delgrent(GETGRNAM(name)); + SETGRENT(); + while ((grp = GETGRENT()) != NULL) { + int i, j; + char group[MAXLOGNAME]; + if (grp->gr_mem == NULL) + continue; + + for (i = 0; grp->gr_mem[i] != NULL; i++) { + if (strcmp(grp->gr_mem[i], name) != 0) + continue; + + for (j = i; grp->gr_mem[j] != NULL; j++) + grp->gr_mem[j] = grp->gr_mem[j+1]; + strlcpy(group, grp->gr_name, MAXLOGNAME); + chggrent(group, grp); + } + } + ENDGRENT(); + + pw_log(cnf, M_DELETE, W_USER, "%s(%ju) account removed", name, + (uintmax_t)id); + + /* Remove mail file */ + if (PWALTDIR() != PWF_ALT) + unlinkat(conf.rootfd, file + 1, 0); + + /* Remove at jobs */ + if (!PWALTDIR() && getpwuid(id) == NULL) + rmat(id); + + /* Remove home directory and contents */ + if (PWALTDIR() != PWF_ALT && deletehome && *home == '/' && + GETPWUID(id) == NULL && + fstatat(conf.rootfd, home + 1, &st, 0) != -1) { + rm_r(conf.rootfd, home, id); + pw_log(cnf, M_DELETE, W_USER, "%s(%ju) home '%s' %s" + "removed", name, (uintmax_t)id, home, + fstatat(conf.rootfd, home + 1, &st, 0) == -1 ? "" : "not " + "completely "); + } + + return (EXIT_SUCCESS); +} + +int +pw_user_lock(int argc, char **argv, char *arg1) +{ + int ch; + + while ((ch = getopt(argc, argv, "Cq")) != -1) { + switch (ch) { + case 'C': + case 'q': + /* compatibility */ + break; + } + } + + return (pw_userlock(arg1, M_LOCK)); +} + +int +pw_user_unlock(int argc, char **argv, char *arg1) +{ + int ch; + + while ((ch = getopt(argc, argv, "Cq")) != -1) { + switch (ch) { + case 'C': + case 'q': + /* compatibility */ + break; + } + } + + return (pw_userlock(arg1, M_UNLOCK)); +} + +static struct group * +group_from_name_or_id(char *name) +{ + const char *errstr = NULL; + struct group *grp; + uintmax_t id; + + if ((grp = GETGRNAM(name)) == NULL) { + id = strtounum(name, 0, GID_MAX, &errstr); + if (errstr) + errx(EX_NOUSER, "group `%s' does not exist", name); + grp = GETGRGID(id); + if (grp == NULL) + errx(EX_NOUSER, "group `%s' does not exist", name); + } + + return (grp); +} + +static void +split_groups(StringList **groups, char *groupsstr) +{ + struct group *grp; + char *p; + char tok[] = ", \t"; + + for (p = strtok(groupsstr, tok); p != NULL; p = strtok(NULL, tok)) { + grp = group_from_name_or_id(p); + if (*groups == NULL) + *groups = sl_init(); + sl_add(*groups, newstr(grp->gr_name)); + } +} + +static void +validate_grname(struct userconf *cnf, char *group) +{ + struct group *grp; + + if (group == NULL || *group == '\0') { + cnf->default_group = ""; + return; + } + grp = group_from_name_or_id(group); + cnf->default_group = newstr(grp->gr_name); +} + +static mode_t +validate_mode(char *mode) +{ + mode_t m; + void *set; + + if ((set = setmode(mode)) == NULL) + errx(EX_DATAERR, "invalid directory creation mode '%s'", mode); + + m = getmode(set, _DEF_DIRMODE); + free(set); + return (m); +} + +static void +mix_config(struct userconf *cmdcnf, struct userconf *cfg) +{ + + if (cmdcnf->default_password == 0) + cmdcnf->default_password = cfg->default_password; + if (cmdcnf->reuse_uids == 0) + cmdcnf->reuse_uids = cfg->reuse_uids; + if (cmdcnf->reuse_gids == 0) + cmdcnf->reuse_gids = cfg->reuse_gids; + if (cmdcnf->nispasswd == NULL) + cmdcnf->nispasswd = cfg->nispasswd; + if (cmdcnf->dotdir == NULL) + cmdcnf->dotdir = cfg->dotdir; + if (cmdcnf->newmail == NULL) + cmdcnf->newmail = cfg->newmail; + if (cmdcnf->logfile == NULL) + cmdcnf->logfile = cfg->logfile; + if (cmdcnf->home == NULL) + cmdcnf->home = cfg->home; + if (cmdcnf->homemode == 0) + cmdcnf->homemode = cfg->homemode; + if (cmdcnf->shelldir == NULL) + cmdcnf->shelldir = cfg->shelldir; + if (cmdcnf->shells == NULL) + cmdcnf->shells = cfg->shells; + if (cmdcnf->shell_default == NULL) + cmdcnf->shell_default = cfg->shell_default; + if (cmdcnf->default_group == NULL) + cmdcnf->default_group = cfg->default_group; + if (cmdcnf->groups == NULL) + cmdcnf->groups = cfg->groups; + if (cmdcnf->default_class == NULL) + cmdcnf->default_class = cfg->default_class; + if (cmdcnf->min_uid == 0) + cmdcnf->min_uid = cfg->min_uid; + if (cmdcnf->max_uid == 0) + cmdcnf->max_uid = cfg->max_uid; + if (cmdcnf->min_gid == 0) + cmdcnf->min_gid = cfg->min_gid; + if (cmdcnf->max_gid == 0) + cmdcnf->max_gid = cfg->max_gid; + if (cmdcnf->expire_days == 0) + cmdcnf->expire_days = cfg->expire_days; + if (cmdcnf->password_days == 0) + cmdcnf->password_days = cfg->password_days; +} + +int +pw_user_add(int argc, char **argv, char *arg1) +{ + struct userconf *cnf, *cmdcnf; + struct passwd *pwd; + struct group *grp; + struct stat st; + char args[] = "C:qn:u:c:d:e:p:g:G:mM:k:s:oL:i:w:h:H:Db:NPy:Y"; + char line[_PASSWORD_LEN+1], path[MAXPATHLEN]; + char *gecos, *homedir, *skel, *walk, *userid, *groupid, *grname; + char *default_passwd, *name, *p; + const char *cfg; + login_cap_t *lc; + FILE *pfp, *fp; + intmax_t id = -1; + time_t now; + int rc, ch, fd = -1; + size_t i; + bool dryrun, nis, pretty, quiet, createhome, precrypted, genconf; + + dryrun = nis = pretty = quiet = createhome = precrypted = false; + genconf = false; + gecos = homedir = skel = userid = groupid = default_passwd = NULL; + grname = name = NULL; + + if ((cmdcnf = calloc(1, sizeof(struct userconf))) == NULL) + err(EXIT_FAILURE, "calloc()"); + + if (arg1 != NULL) { + if (arg1[strspn(arg1, "0123456789")] == '\0') + id = pw_checkid(arg1, UID_MAX); + else + name = arg1; + } + + while ((ch = getopt(argc, argv, args)) != -1) { + switch (ch) { + case 'C': + cfg = optarg; + break; + case 'q': + quiet = true; + break; + case 'n': + name = optarg; + break; + case 'u': + userid = optarg; + break; + case 'c': + gecos = pw_checkname(optarg, 1); + break; + case 'd': + homedir = optarg; + break; + case 'e': + now = time(NULL); + cmdcnf->expire_days = parse_date(now, optarg); + break; + case 'p': + now = time(NULL); + cmdcnf->password_days = parse_date(now, optarg); + break; + case 'g': + validate_grname(cmdcnf, optarg); + grname = optarg; + break; + case 'G': + split_groups(&cmdcnf->groups, optarg); + break; + case 'm': + createhome = true; + break; + case 'M': + cmdcnf->homemode = validate_mode(optarg); + break; + case 'k': + walk = skel = optarg; + if (*walk == '/') + walk++; + if (fstatat(conf.rootfd, walk, &st, 0) == -1) + errx(EX_OSFILE, "skeleton `%s' does not " + "exists", skel); + if (!S_ISDIR(st.st_mode)) + errx(EX_OSFILE, "skeleton `%s' is not a " + "directory", skel); + cmdcnf->dotdir = skel; + break; + case 's': + cmdcnf->shell_default = optarg; + break; + case 'o': + conf.checkduplicate = false; + break; + case 'L': + cmdcnf->default_class = pw_checkname(optarg, 0); + break; + case 'i': + groupid = optarg; + break; + case 'w': + default_passwd = optarg; + break; + case 'H': + if (fd != -1) + errx(EX_USAGE, "'-h' and '-H' are mutually " + "exclusive options"); + fd = pw_checkfd(optarg); + precrypted = true; + if (fd == '-') + errx(EX_USAGE, "-H expects a file descriptor"); + break; + case 'h': + if (fd != -1) + errx(EX_USAGE, "'-h' and '-H' are mutually " + "exclusive options"); + fd = pw_checkfd(optarg); + break; + case 'D': + genconf = true; + break; + case 'b': + cmdcnf->home = optarg; + break; + case 'N': + dryrun = true; + break; + case 'P': + pretty = true; + break; + case 'y': + cmdcnf->nispasswd = optarg; + break; + case 'Y': + nis = true; + break; + } + } + + if (geteuid() != 0 && ! dryrun) + errx(EX_NOPERM, "you must be root"); + + if (quiet) + freopen(_PATH_DEVNULL, "w", stderr); + + cnf = get_userconfig(cfg); + + mix_config(cmdcnf, cnf); + if (default_passwd) + cmdcnf->default_password = passwd_val(default_passwd, + cnf->default_password); + if (genconf) { + if (name != NULL) + errx(EX_DATAERR, "can't combine `-D' with `-n name'"); + if (userid != NULL) { + if ((p = strtok(userid, ", \t")) != NULL) + cmdcnf->min_uid = pw_checkid(p, UID_MAX); + if (cmdcnf->min_uid == 0) + cmdcnf->min_uid = 1000; + if ((p = strtok(NULL, " ,\t")) != NULL) + cmdcnf->max_uid = pw_checkid(p, UID_MAX); + if (cmdcnf->max_uid == 0) + cmdcnf->max_uid = 32000; + } + if (groupid != NULL) { + if ((p = strtok(groupid, ", \t")) != NULL) + cmdcnf->min_gid = pw_checkid(p, GID_MAX); + if (cmdcnf->min_gid == 0) + cmdcnf->min_gid = 1000; + if ((p = strtok(NULL, " ,\t")) != NULL) + cmdcnf->max_gid = pw_checkid(p, GID_MAX); + if (cmdcnf->max_gid == 0) + cmdcnf->max_gid = 32000; + } + if (write_userconfig(cmdcnf, cfg)) + return (EXIT_SUCCESS); + err(EX_IOERR, "config update"); + } + + if (userid) + id = pw_checkid(userid, UID_MAX); + if (id < 0 && name == NULL) + errx(EX_DATAERR, "user name or id required"); + + if (name == NULL) + errx(EX_DATAERR, "login name required"); + + if (GETPWNAM(name) != NULL) + errx(EX_DATAERR, "login name `%s' already exists", name); + + pwd = &fakeuser; + pwd->pw_name = name; + pwd->pw_class = cmdcnf->default_class ? cmdcnf->default_class : ""; + pwd->pw_uid = pw_uidpolicy(cmdcnf, id); + pwd->pw_gid = pw_gidpolicy(cnf, grname, pwd->pw_name, + (gid_t) pwd->pw_uid, dryrun); + pwd->pw_change = cmdcnf->password_days; + pwd->pw_expire = cmdcnf->expire_days; + pwd->pw_dir = pw_homepolicy(cmdcnf, homedir, pwd->pw_name); + pwd->pw_shell = pw_shellpolicy(cmdcnf); + lc = login_getpwclass(pwd); + if (lc == NULL || login_setcryptfmt(lc, "sha512", NULL) == NULL) + warn("setting crypt(3) format"); + login_close(lc); + pwd->pw_passwd = pw_password(cmdcnf, pwd->pw_name, dryrun); + if (pwd->pw_uid == 0 && strcmp(pwd->pw_name, "root") != 0) + warnx("WARNING: new account `%s' has a uid of 0 " + "(superuser access!)", pwd->pw_name); + if (gecos) + pwd->pw_gecos = gecos; + + if (fd != -1) + pw_set_passwd(pwd, fd, precrypted, false); + + if (dryrun) + return (print_user(pwd, pretty, false)); + + if ((rc = addpwent(pwd)) != 0) { + if (rc == -1) + errx(EX_IOERR, "user '%s' already exists", + pwd->pw_name); + else if (rc != 0) + err(EX_IOERR, "passwd file update"); + } + if (nis && cmdcnf->nispasswd && *cmdcnf->nispasswd == '/') { + printf("%s\n", cmdcnf->nispasswd); + rc = addnispwent(cmdcnf->nispasswd, pwd); + if (rc == -1) + warnx("User '%s' already exists in NIS passwd", + pwd->pw_name); + else if (rc != 0) + warn("NIS passwd update"); + /* NOTE: we treat NIS-only update errors as non-fatal */ + } + + if (cmdcnf->groups != NULL) { + for (i = 0; i < cmdcnf->groups->sl_cur; i++) { + grp = GETGRNAM(cmdcnf->groups->sl_str[i]); + grp = gr_add(grp, pwd->pw_name); + /* + * grp can only be NULL in 2 cases: + * - the new member is already a member + * - a problem with memory occurs + * in both cases we want to skip now. + */ + if (grp == NULL) + continue; + chggrent(grp->gr_name, grp); + free(grp); + } + } + + pwd = GETPWNAM(name); + if (pwd == NULL) + errx(EX_NOUSER, "user '%s' disappeared during update", name); + + grp = GETGRGID(pwd->pw_gid); + pw_log(cnf, M_ADD, W_USER, "%s(%ju):%s(%ju):%s:%s:%s", + pwd->pw_name, (uintmax_t)pwd->pw_uid, + grp ? grp->gr_name : "unknown", + (uintmax_t)(grp ? grp->gr_gid : (uid_t)-1), + pwd->pw_gecos, pwd->pw_dir, pwd->pw_shell); + + /* + * let's touch and chown the user's mail file. This is not + * strictly necessary under BSD with a 0755 maildir but it also + * doesn't hurt anything to create the empty mailfile + */ + if (PWALTDIR() != PWF_ALT) { + snprintf(path, sizeof(path), "%s/%s", _PATH_MAILDIR, + pwd->pw_name); + /* Preserve contents & mtime */ + close(openat(conf.rootfd, path +1, O_RDWR | O_CREAT, 0600)); + fchownat(conf.rootfd, path + 1, pwd->pw_uid, pwd->pw_gid, + AT_SYMLINK_NOFOLLOW); + } + + /* + * Let's create and populate the user's home directory. Note + * that this also `works' for editing users if -m is used, but + * existing files will *not* be overwritten. + */ + if (PWALTDIR() != PWF_ALT && createhome && pwd->pw_dir && + *pwd->pw_dir == '/' && pwd->pw_dir[1]) + create_and_populate_homedir(cmdcnf, pwd, cmdcnf->dotdir, + cmdcnf->homemode, false); + + if (!PWALTDIR() && cmdcnf->newmail && *cmdcnf->newmail && + (fp = fopen(cnf->newmail, "r")) != NULL) { + if ((pfp = popen(_PATH_SENDMAIL " -t", "w")) == NULL) + warn("sendmail"); + else { + fprintf(pfp, "From: root\n" "To: %s\n" + "Subject: Welcome!\n\n", pwd->pw_name); + while (fgets(line, sizeof(line), fp) != NULL) { + /* Do substitutions? */ + fputs(line, pfp); } - atofs = ftell(fp); + pclose(pfp); + pw_log(cnf, M_ADD, W_USER, "%s(%ju) new user mail sent", + pwd->pw_name, (uintmax_t)pwd->pw_uid); } - /* - * If we got an error of any sort, don't update! - */ fclose(fp); } + + if (nis && nis_update() == 0) + pw_log(cnf, M_ADD, W_USER, "NIS maps updated"); + + return (EXIT_SUCCESS); } +int +pw_user_mod(int argc, char **argv, char *arg1) +{ + struct userconf *cnf; + struct passwd *pwd; + struct group *grp; + StringList *groups = NULL; + char args[] = "C:qn:u:c:d:e:p:g:G:mM:l:k:s:w:L:h:H:NPYy:"; + const char *cfg; + char *gecos, *homedir, *grname, *name, *newname, *walk, *skel, *shell; + char *passwd, *class, *nispasswd; + login_cap_t *lc; + struct stat st; + intmax_t id = -1; + int ch, fd = -1; + size_t i, j; + bool quiet, createhome, pretty, dryrun, nis, edited; + bool precrypted; + mode_t homemode = 0; + time_t expire_days, password_days, now; + + expire_days = password_days = -1; + gecos = homedir = grname = name = newname = skel = shell =NULL; + passwd = NULL; + class = nispasswd = NULL; + quiet = createhome = pretty = dryrun = nis = precrypted = false; + edited = false; + + if (arg1 != NULL) { + if (arg1[strspn(arg1, "0123456789")] == '\0') + id = pw_checkid(arg1, UID_MAX); + else + name = arg1; + } + + while ((ch = getopt(argc, argv, args)) != -1) { + switch (ch) { + case 'C': + cfg = optarg; + break; + case 'q': + quiet = true; + break; + case 'n': + name = optarg; + break; + case 'u': + id = pw_checkid(optarg, UID_MAX); + break; + case 'c': + gecos = pw_checkname(optarg, 1); + break; + case 'd': + homedir = optarg; + break; + case 'e': + now = time(NULL); + expire_days = parse_date(now, optarg); + break; + case 'p': + now = time(NULL); + password_days = parse_date(now, optarg); + break; + case 'g': + group_from_name_or_id(optarg); + grname = optarg; + break; + case 'G': + split_groups(&groups, optarg); + break; + case 'm': + createhome = true; + break; + case 'M': + homemode = validate_mode(optarg); + break; + case 'l': + newname = optarg; + break; + case 'k': + walk = skel = optarg; + if (*walk == '/') + walk++; + if (fstatat(conf.rootfd, walk, &st, 0) == -1) + errx(EX_OSFILE, "skeleton `%s' does not " + "exists", skel); + if (!S_ISDIR(st.st_mode)) + errx(EX_OSFILE, "skeleton `%s' is not a " + "directory", skel); + break; + case 's': + shell = optarg; + break; + case 'w': + passwd = optarg; + break; + case 'L': + class = pw_checkname(optarg, 0); + break; + case 'H': + if (fd != -1) + errx(EX_USAGE, "'-h' and '-H' are mutually " + "exclusive options"); + fd = pw_checkfd(optarg); + precrypted = true; + if (fd == '-') + errx(EX_USAGE, "-H expects a file descriptor"); + break; + case 'h': + if (fd != -1) + errx(EX_USAGE, "'-h' and '-H' are mutually " + "exclusive options"); + fd = pw_checkfd(optarg); + break; + case 'N': + dryrun = true; + break; + case 'P': + pretty = true; + break; + case 'y': + nispasswd = optarg; + break; + case 'Y': + nis = true; + break; + } + } + + if (geteuid() != 0 && ! dryrun) + errx(EX_NOPERM, "you must be root"); + + if (quiet) + freopen(_PATH_DEVNULL, "w", stderr); + + cnf = get_userconfig(cfg); + + if (id < 0 && name == NULL) + errx(EX_DATAERR, "username or id required"); + + pwd = (name != NULL) ? GETPWNAM(pw_checkname(name, 0)) : GETPWUID(id); + if (pwd == NULL) { + if (name == NULL) + errx(EX_NOUSER, "no such uid `%ju'", + (uintmax_t) id); + errx(EX_NOUSER, "no such user `%s'", name); + } + + if (name == NULL) + name = pwd->pw_name; + + if (nis && nispasswd == NULL) + nispasswd = cnf->nispasswd; + + if (PWF._altdir == PWF_REGULAR && + ((pwd->pw_fields & _PWF_SOURCE) != _PWF_FILES)) { + if ((pwd->pw_fields & _PWF_SOURCE) == _PWF_NIS) { + if (!nis && nispasswd && *nispasswd != '/') + errx(EX_NOUSER, "Cannot modify NIS user `%s'", + name); + } else { + errx(EX_NOUSER, "Cannot modify non local user `%s'", + name); + } + } + + if (newname) { + if (strcmp(pwd->pw_name, "root") == 0) + errx(EX_DATAERR, "can't rename `root' account"); + if (strcmp(pwd->pw_name, newname) != 0) { + pwd->pw_name = pw_checkname(newname, 0); + edited = true; + } + } + + if (id >= 0 && pwd->pw_uid != id) { + pwd->pw_uid = id; + edited = true; + if (pwd->pw_uid != 0 && strcmp(pwd->pw_name, "root") == 0) + errx(EX_DATAERR, "can't change uid of `root' account"); + if (pwd->pw_uid == 0 && strcmp(pwd->pw_name, "root") != 0) + warnx("WARNING: account `%s' will have a uid of 0 " + "(superuser access!)", pwd->pw_name); + } + + if (grname && pwd->pw_uid != 0) { + grp = GETGRNAM(grname); + if (grp == NULL) + grp = GETGRGID(pw_checkid(grname, GID_MAX)); + if (grp->gr_gid != pwd->pw_gid) { + pwd->pw_gid = grp->gr_gid; + edited = true; + } + } + + if (password_days >= 0 && pwd->pw_change != password_days) { + pwd->pw_change = password_days; + edited = true; + } + + if (expire_days >= 0 && pwd->pw_expire != expire_days) { + pwd->pw_expire = expire_days; + edited = true; + } + + if (shell) { + shell = shell_path(cnf->shelldir, cnf->shells, shell); + if (shell == NULL) + shell = ""; + if (strcmp(shell, pwd->pw_shell) != 0) { + pwd->pw_shell = shell; + edited = true; + } + } + + if (class && strcmp(pwd->pw_class, class) != 0) { + pwd->pw_class = class; + edited = true; + } + + if (homedir && strcmp(pwd->pw_dir, homedir) != 0) { + pwd->pw_dir = homedir; + edited = true; + if (fstatat(conf.rootfd, pwd->pw_dir, &st, 0) == -1) { + if (!createhome) + warnx("WARNING: home `%s' does not exist", + pwd->pw_dir); + } else if (!S_ISDIR(st.st_mode)) { + warnx("WARNING: home `%s' is not a directory", + pwd->pw_dir); + } + } + + if (passwd && conf.fd == -1) { + lc = login_getpwclass(pwd); + if (lc == NULL || login_setcryptfmt(lc, "sha512", NULL) == NULL) + warn("setting crypt(3) format"); + login_close(lc); + cnf->default_password = passwd_val(passwd, + cnf->default_password); + pwd->pw_passwd = pw_password(cnf, pwd->pw_name, dryrun); + edited = true; + } + + if (gecos && strcmp(pwd->pw_gecos, gecos) != 0) { + pwd->pw_gecos = gecos; + edited = true; + } + + if (fd != -1) + edited = pw_set_passwd(pwd, fd, precrypted, true); + + if (dryrun) + return (print_user(pwd, pretty, false)); + + if (edited) /* Only updated this if required */ + perform_chgpwent(name, pwd, nis ? nispasswd : NULL); + /* Now perform the needed changes concern groups */ + if (groups != NULL) { + /* Delete User from groups using old name */ + SETGRENT(); + while ((grp = GETGRENT()) != NULL) { + if (grp->gr_mem == NULL) + continue; + for (i = 0; grp->gr_mem[i] != NULL; i++) { + if (strcmp(grp->gr_mem[i] , name) != 0) + continue; + for (j = i; grp->gr_mem[j] != NULL ; j++) + grp->gr_mem[j] = grp->gr_mem[j+1]; + chggrent(grp->gr_name, grp); + break; + } + } + ENDGRENT(); + /* Add the user to the needed groups */ + for (i = 0; i < groups->sl_cur; i++) { + grp = GETGRNAM(groups->sl_str[i]); + grp = gr_add(grp, pwd->pw_name); + if (grp == NULL) + continue; + chggrent(grp->gr_name, grp); + free(grp); + } + } + /* In case of rename we need to walk over the different groups */ + if (newname) { + SETGRENT(); + while ((grp = GETGRENT()) != NULL) { + if (grp->gr_mem == NULL) + continue; + for (i = 0; grp->gr_mem[i] != NULL; i++) { + if (strcmp(grp->gr_mem[i], name) != 0) + continue; + grp->gr_mem[i] = newname; + chggrent(grp->gr_name, grp); + break; + } + } + } + + /* go get a current version of pwd */ + if (newname) + name = newname; + pwd = GETPWNAM(name); + if (pwd == NULL) + errx(EX_NOUSER, "user '%s' disappeared during update", name); + grp = GETGRGID(pwd->pw_gid); + pw_log(cnf, M_UPDATE, W_USER, "%s(%ju):%s(%ju):%s:%s:%s", + pwd->pw_name, (uintmax_t)pwd->pw_uid, + grp ? grp->gr_name : "unknown", + (uintmax_t)(grp ? grp->gr_gid : (uid_t)-1), + pwd->pw_gecos, pwd->pw_dir, pwd->pw_shell); + + /* + * Let's create and populate the user's home directory. Note + * that this also `works' for editing users if -m is used, but + * existing files will *not* be overwritten. + */ + if (PWALTDIR() != PWF_ALT && createhome && pwd->pw_dir && + *pwd->pw_dir == '/' && pwd->pw_dir[1]) { + if (!skel) + skel = cnf->dotdir; + if (homemode == 0) + homemode = cnf->homemode; + create_and_populate_homedir(cnf, pwd, skel, homemode, true); + } + + if (nis && nis_update() == 0) + pw_log(cnf, M_UPDATE, W_USER, "NIS maps updated"); + + return (EXIT_SUCCESS); +}