summaryrefslogtreecommitdiffstats
path: root/usr.sbin/pw/pw_user.c
diff options
context:
space:
mode:
Diffstat (limited to 'usr.sbin/pw/pw_user.c')
-rw-r--r--usr.sbin/pw/pw_user.c1815
1 files changed, 1815 insertions, 0 deletions
diff --git a/usr.sbin/pw/pw_user.c b/usr.sbin/pw/pw_user.c
new file mode 100644
index 0000000..30a2749
--- /dev/null
+++ b/usr.sbin/pw/pw_user.c
@@ -0,0 +1,1815 @@
+/*-
+ * Copyright (C) 1996
+ * David L. Nugent. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY DAVID L. NUGENT AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL DAVID L. NUGENT OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ */
+
+#ifndef lint
+static const char rcsid[] =
+ "$FreeBSD$";
+#endif /* not lint */
+
+#include <sys/param.h>
+#include <sys/resource.h>
+#include <sys/time.h>
+#include <sys/types.h>
+
+#include <ctype.h>
+#include <dirent.h>
+#include <err.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <grp.h>
+#include <pwd.h>
+#include <libutil.h>
+#include <login_cap.h>
+#include <paths.h>
+#include <string.h>
+#include <sysexits.h>
+#include <termios.h>
+#include <unistd.h>
+
+#include "pw.h"
+#include "bitmap.h"
+#include "psdate.h"
+
+#define LOGNAMESIZE (MAXLOGNAME-1)
+
+static char locked_str[] = "*LOCKED*";
+
+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);
+
+static void
+mkdir_home_parents(int dfd, const char *dir)
+{
+ struct stat st;
+ char *dirs, *tmp;
+
+ if (*dir != '/')
+ errx(EX_DATAERR, "invalid base directory for home '%s'", dir);
+
+ dir++;
+
+ 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);
+ }
+
+ dirs = strdup(dir);
+ if (dirs == NULL)
+ errx(EX_UNAVAILABLE, "out of memory");
+
+ tmp = strrchr(dirs, '/');
+ if (tmp == NULL) {
+ free(dirs);
+ return;
+ }
+ tmp[0] = '\0';
+
+ /*
+ * 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(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);
+ }
+ 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);
+ }
+ *tmp = '/';
+ }
+ }
+ 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);
+ }
+
+ free(dirs);
+}
+
+static void
+create_and_populate_homedir(struct userconf *cnf, struct passwd *pwd,
+ const char *skeldir, mode_t homemode, bool update)
+{
+ int skelfd = -1;
+
+ /* Create home parents directories */
+ mkdir_home_parents(conf.rootfd, pwd->pw_dir);
+
+ if (skeldir != NULL && *skeldir != '\0') {
+ if (*skeldir == '/')
+ skeldir++;
+ skelfd = openat(conf.rootfd, skeldir, O_DIRECTORY|O_CLOEXEC);
+ }
+
+ 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);
+}
+
+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);
+ }
+ return (0);
+ }
+
+ 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 {
+ 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);
+ }
+ return (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 */
+ }
+}
+
+/*
+ * 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;
+ }
+ 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);
+ }
+
+ 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);
+
+ return (EXIT_SUCCESS);
+}
+
+static uid_t
+pw_uidpolicy(struct userconf * cnf, intmax_t id)
+{
+ struct passwd *pwd;
+ struct bitmap bm;
+ uid_t uid = (uid_t) - 1;
+
+ /*
+ * Check the given uid, if any
+ */
+ 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);
+ }
+ /*
+ * 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);
+
+ /*
+ * 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, char *grname, char *nam, gid_t prefer, bool dryrun)
+{
+ struct group *grp;
+ gid_t gid = (uid_t) - 1;
+
+ /*
+ * Check the given gid, if any
+ */
+ SETGRENT();
+ 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 {
+ intmax_t grid = -1;
+
+ /*
+ * We need to auto-create a group with the user's name. We
+ * can send all the appropriate output to our sister routine
+ * bit first see if we can create a group with gid==uid so we
+ * can keep the user and group ids in sync. We purposely do
+ * NOT check the gid range if we can force the sync. If the
+ * 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)
+ 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;
+ }
+ }
+ ENDGRENT();
+ return (gid);
+}
+
+static char *
+pw_homepolicy(struct userconf * cnf, char *homedir, const char *user)
+{
+ static char home[128];
+
+ if (homedir)
+ return (homedir);
+
+ if (cnf->home == NULL || *cnf->home == '\0')
+ errx(EX_CONFIG, "no base home directory set");
+ snprintf(home, sizeof(home), "%s/%s", cnf->home, user);
+
+ return (home);
+}
+
+static char *
+shell_path(char const * path, char *shells[], char *sh)
+{
+ if (sh != NULL && (*sh == '/' || *sh == '\0'))
+ return sh; /* specified full path or forced none */
+ else {
+ char *p;
+ char paths[_UC_MAXLINE];
+
+ /*
+ * We need to search paths
+ */
+ strlcpy(paths, path, sizeof(paths));
+ for (p = strtok(paths, ": \t\r\n"); p != NULL; p = strtok(NULL, ": \t\r\n")) {
+ int i;
+ static char shellpath[256];
+
+ if (sh != NULL) {
+ 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++) {
+ snprintf(shellpath, sizeof(shellpath), "%s/%s", p, shells[i]);
+ if (access(shellpath, X_OK) == 0)
+ return shellpath;
+ }
+ }
+ if (sh == NULL)
+ errx(EX_OSFILE, "can't find shell `%s' in shell paths", sh);
+ errx(EX_CONFIG, "no default shell available or defined");
+ return NULL;
+ }
+}
+
+static char *
+pw_shellpolicy(struct userconf * cnf)
+{
+
+ return shell_path(cnf->shelldir, cnf->shells, cnf->shell_default);
+}
+
+#define SALTSIZE 32
+
+static char const chars[] = "0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ./";
+
+char *
+pw_pwcrypt(char *password)
+{
+ int i;
+ char salt[SALTSIZE + 1];
+ char *cryptpw;
+ static char buf[256];
+
+ /*
+ * Calculate a salt value
+ */
+ for (i = 0; i < SALTSIZE; i++)
+ salt[i] = chars[arc4random_uniform(sizeof(chars) - 1)];
+ salt[SALTSIZE] = '\0';
+
+ cryptpw = crypt(password, salt);
+ if (cryptpw == NULL)
+ errx(EX_CONFIG, "crypt(3) failure");
+ return strcpy(buf, cryptpw);
+}
+
+static char *
+pw_password(struct userconf * cnf, char const * user, bool dryrun)
+{
+ int i, l;
+ char pwbuf[32];
+
+ switch (cnf->default_password) {
+ case -1: /* Random password */
+ l = (arc4random() % 8 + 8); /* 8 - 16 chars */
+ for (i = 0; i < l; i++)
+ pwbuf[i] = chars[arc4random_uniform(sizeof(chars)-1)];
+ pwbuf[i] = '\0';
+
+ /*
+ * We give this information back to the user
+ */
+ if (conf.fd == -1 && !dryrun) {
+ if (isatty(STDOUT_FILENO))
+ printf("Password for '%s' is: ", user);
+ printf("%s\n", pwbuf);
+ fflush(stdout);
+ }
+ break;
+
+ case -2: /* No password at all! */
+ return "";
+
+ case 0: /* No login - default */
+ default:
+ return "*";
+
+ case 1: /* user's name */
+ strlcpy(pwbuf, user, sizeof(pwbuf));
+ break;
+ }
+ return pw_pwcrypt(pwbuf);
+}
+
+static int
+print_user(struct passwd * pwd, bool pretty, bool v7)
+{
+ 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 (!pretty) {
+ p = v7 ? pw_make_v7(pwd) : pw_make(pwd);
+ printf("%s\n", p);
+ free(p);
+ return (EXIT_SUCCESS);
+ }
+
+ 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(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);
+
+ 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 #%-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);
+}
+
+char *
+pw_checkname(char *name, int gecos)
+{
+ char showch[8];
+ const char *badchars, *ch, *showtype;
+ int reject;
+
+ ch = name;
+ reject = 0;
+ if (gecos) {
+ /* See if the name is valid as a gecos (comment) field. */
+ badchars = ":!@";
+ showtype = "gecos field";
+ } else {
+ /* See if the name is valid as a userid or group. */
+ badchars = " ,\t:+&#%$^()!@~*?<>=|\\/\"";
+ showtype = "userid/group name";
+ /* Userids and groups can not have a leading '-'. */
+ if (*ch == '-')
+ reject = 1;
+ }
+ if (!reject) {
+ while (*ch) {
+ if (strchr(badchars, *ch) != NULL ||
+ (!gecos && *ch < ' ') ||
+ *ch == 127) {
+ reject = 1;
+ break;
+ }
+ /* 8-bit characters are only allowed in GECOS fields */
+ if (!gecos && (*ch & 0x80)) {
+ reject = 1;
+ break;
+ }
+ ch++;
+ }
+ }
+ /*
+ * A `$' is allowed as the final character for userids and groups,
+ * mainly for the benefit of samba.
+ */
+ if (reject && !gecos) {
+ if (*ch == '$' && *(ch + 1) == '\0') {
+ reject = 0;
+ ch++;
+ }
+ }
+ if (reject) {
+ snprintf(showch, sizeof(showch), (*ch >= ' ' && *ch < 127)
+ ? "`%c'" : "0x%02x", *ch);
+ errx(EX_DATAERR, "invalid character %s at position %td in %s",
+ showch, (ch - name), showtype);
+ }
+ if (!gecos && (ch - name) > LOGNAMESIZE)
+ errx(EX_USAGE, "name too long `%s' (max is %d)", name,
+ LOGNAMESIZE);
+
+ return (name);
+}
+
+static void
+rmat(uid_t uid)
+{
+ DIR *d = opendir("/var/at/jobs");
+
+ if (d != NULL) {
+ struct dirent *e;
+
+ while ((e = readdir(d)) != NULL) {
+ struct stat st;
+
+ if (strncmp(e->d_name, ".lock", 5) != 0 &&
+ stat(e->d_name, &st) == 0 &&
+ !S_ISDIR(st.st_mode) &&
+ st.st_uid == uid) {
+ char tmp[MAXPATHLEN];
+
+ snprintf(tmp, sizeof(tmp), "/usr/bin/atrm %s",
+ e->d_name);
+ system(tmp);
+ }
+ }
+ closedir(d);
+ }
+}
+
+static void
+rmopie(char const * name)
+{
+ 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, "Cq")) != -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 = boolean_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);
+ }
+ pclose(pfp);
+ pw_log(cnf, M_ADD, W_USER, "%s(%ju) new user mail sent",
+ pwd->pw_name, (uintmax_t)pwd->pw_uid);
+ }
+ 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, docreatehome;
+ 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 = docreatehome = 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
+ docreatehome = true;
+ } 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 = boolean_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 && docreatehome && 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);
+}
OpenPOWER on IntegriCloud