/**
* Remove maxscale user from in-memory structure and from password file
*
* @param uname Name of the new user
* @param passwd Password for the new user
* @return NULL on success or an error string on failure
*/
char* admin_remove_user(
char* uname,
char* passwd)
{
FILE* fp;
FILE* fp_tmp;
char fname[1024];
char fname_tmp[1024];
char* home;
char fusr[LINELEN];
char fpwd[LINELEN];
char line[LINELEN];
fpos_t rpos;
int n_deleted;
if (!admin_search_user(uname)) {
LOGIF(LE, (skygw_log_write_flush(
LOGFILE_ERROR,
"Error : Couldn't find user %s. Removing user failed",
uname)));
return ADMIN_ERR_USERNOTFOUND;
}
if (admin_verify(uname, passwd) == 0) {
LOGIF(LE, (skygw_log_write_flush(
LOGFILE_ERROR,
"Error : Authentication failed, wrong user/password "
"combination. Removing user failed.")));
return ADMIN_ERR_AUTHENTICATION;
}
/** Remove user from in-memory structure */
n_deleted = users_delete(users, uname);
if (n_deleted == 0) {
LOGIF(LE, (skygw_log_write_flush(
LOGFILE_ERROR,
"Error : Deleting the only user is forbidden. Add new "
"user before deleting the one.")));
return ADMIN_ERR_DELLASTUSER;
}
/**
* Open passwd file and remove user from the file.
*/
sprintf(fname, "%s/passwd", get_datadir());
sprintf(fname_tmp, "%s/passwd_tmp", get_datadir());
/**
* Rewrite passwd file from memory.
*/
if ((fp = fopen(fname, "r")) == NULL)
{
int err = errno;
LOGIF(LE, (skygw_log_write_flush(
LOGFILE_ERROR,
"Error : Unable to open password file %s : errno %d.\n"
"Removing user from file failed; it must be done "
"manually.",
fname,
err)));
return ADMIN_ERR_PWDFILEOPEN;
}
/**
* Open temporary passwd file.
*/
if ((fp_tmp = fopen(fname_tmp, "w")) == NULL)
{
int err = errno;
LOGIF(LE, (skygw_log_write_flush(
LOGFILE_ERROR,
"Error : Unable to open tmp file %s : errno %d.\n"
"Removing user from passwd file failed; it must be done "
"manually.",
fname_tmp,
err)));
fclose(fp);
return ADMIN_ERR_TMPFILEOPEN;
}
/**
* Scan passwd and copy all but matching lines to temp file.
*/
if (fgetpos(fp, &rpos) != 0) {
int err = errno;
LOGIF(LE, (skygw_log_write_flush(
LOGFILE_ERROR,
"Error : Unable to process passwd file %s : errno %d.\n"
"Removing user from file failed, and must be done "
"manually.",
fname,
err)));
fclose(fp);
fclose(fp_tmp);
unlink(fname_tmp);
return ADMIN_ERR_PWDFILEACCESS;
}
while (fscanf(fp, "%[^:]:%s\n", fusr, fpwd) == 2)
{
/**
* Compare username what was found from passwd file.
* Unmatching lines are copied to tmp file.
*/
if (strncmp(uname, fusr, strlen(uname)+1) != 0) {
if(fsetpos(fp, &rpos) != 0){ /** one step back */
LOGIF(LE, (skygw_log_write_flush(
LOGFILE_ERROR,
"Error : Unable to set stream position. ")));
}
fgets(line, LINELEN, fp);
fputs(line, fp_tmp);
}
if (fgetpos(fp, &rpos) != 0) {
int err = errno;
LOGIF(LE, (skygw_log_write_flush(
LOGFILE_ERROR,
"Error : Unable to process passwd file %s : "
"errno %d.\n"
"Removing user from file failed, and must be "
"done manually.",
fname,
err)));
fclose(fp);
fclose(fp_tmp);
unlink(fname_tmp);
return ADMIN_ERR_PWDFILEACCESS;
}
}
fclose(fp);
/**
* Replace original passwd file with new.
*/
if (rename(fname_tmp, fname)) {
int err = errno;
LOGIF(LE, (skygw_log_write_flush(
LOGFILE_ERROR,
"Error : Unable to rename new passwd file %s : errno "
"%d.\n"
"Rename it to %s manually.",
fname_tmp,
err,
fname)));
unlink(fname_tmp);
fclose(fp_tmp);
return ADMIN_ERR_PWDFILEACCESS;
}
fclose(fp_tmp);
return ADMIN_SUCCESS;
}
static int
gpsd_start(
int unit,
peerT * peer)
{
clockprocT * const pp = peer->procptr;
gpsd_unitT * const up = emalloc_zero(sizeof(*up));
struct stat sb;
/* initialize the unit structure */
up->fdt = -1;
up->addr = s_gpsd_addr;
up->tickpres = TICKOVER_LOW;
/* setup refclock processing */
up->unit = unit;
pp->unitptr = (caddr_t)up;
pp->io.fd = -1;
pp->io.clock_recv = gpsd_receive;
pp->io.srcclock = peer;
pp->io.datalen = 0;
pp->a_lastcode[0] = '\0';
pp->lencode = 0;
pp->clockdesc = DESCRIPTION;
memcpy(&pp->refid, REFID, 4);
/* Initialize miscellaneous variables */
peer->precision = PRECISION;
/* Create the device name and check for a Character Device. It's
* assumed that GPSD was started with the same link, so the
* names match. (If this is not practicable, we will have to
* read the symlink, if any, so we can get the true device
* file.)
*/
if (-1 == myasprintf(&up->device, "%s%u", s_dev_stem, unit)) {
msyslog(LOG_ERR, "%s clock device name too long",
refnumtoa(&peer->srcadr));
goto dev_fail;
}
if (-1 == stat(up->device, &sb) || !S_ISCHR(sb.st_mode)) {
msyslog(LOG_ERR, "%s: '%s' is not a character device",
refnumtoa(&peer->srcadr), up->device);
goto dev_fail;
}
LOGIF(CLOCKINFO,
(LOG_NOTICE, "%s: startup, device is '%s'",
refnumtoa(&peer->srcadr), up->device));
return TRUE;
dev_fail:
/* On failure, remove all UNIT ressources and declare defeat. */
INSIST (up);
free(up->device);
free(up);
pp->unitptr = (caddr_t)NULL;
return FALSE;
}
