const char* ucspi_getenv(const char* name)
{
if (ucspi_protocol() == 0)
return 0;
strncpy(vartmp + protolen, name, MAXNAME);
return getenv(vartmp);
}
int main(int argc, char* argv[])
{
str packet = {0,0,0};
const char* s;
uid_t euid = -1;
const struct passwd* pw;
if (chdir_bcron() != 0)
respond("ZCould not change directory");
if (argc > 1)
fixup_argv = argv + 1;
if ((s = ucspi_protocol()) == 0
|| (strcmp(s, "UNIX") != 0 && strcmp(s, "LOCAL") != 0)
|| (s = ucspi_getenv("REMOTEEUID")) == 0
|| (euid = strtoul(s, (char**)&s, 0)) == (unsigned)-1
|| *s != 0)
respond("DConfiguration error: must be run from unixserver");
if (!ibuf_getnetstring(&inbuf, &packet)
|| packet.len < 2)
respond("ZInvalid input data or read error");
/* Look up and validate username */
username = packet.s + 1;
if ((pw = getpwnam(username)) == 0)
respond("DInvalid or unknown username");
if (euid != 0 && euid != pw->pw_uid)
respond("DUsername does not match invoking UID");
if (!str_copy2s(&filename, CRONTAB_DIR "/", pw->pw_name))
respond("ZCould not produce filename");
logcmd(packet.s[0]);
/* Execute the command. */
switch (packet.s[0]) {
case 'S': cmd_store(&packet); break;
case 'L': cmd_list(); break;
case 'R': cmd_remove(); break;
case 'Y':
if (euid != 0 && euid != getuid())
respond("DOnly root or cron can list system crontabs");
cmd_listsys();
break;
}
respond("DInvalid command code");
return 0;
}