int pam_sm_authenticate(pam_handle_t *pamh, int flags,
int argc, const char **argv)
{
unsigned int ctrl;
int retval, *ret_data = NULL;
struct samu *sampass = NULL;
const char *name;
void (*oldsig_handler)(int) = NULL;
bool found;
/* Points to memory managed by the PAM library. Do not free. */
char *p = NULL;
/* Samba initialization. */
load_case_tables();
lp_set_in_client(True);
ctrl = set_ctrl(pamh, flags, argc, argv);
/* Get a few bytes so we can pass our return value to
pam_sm_setcred(). */
ret_data = SMB_MALLOC_P(int);
/* we need to do this before we call AUTH_RETURN */
/* Getting into places that might use LDAP -- protect the app
from a SIGPIPE it's not expecting */
oldsig_handler = CatchSignal(SIGPIPE, SIGNAL_CAST SIG_IGN);
/* get the username */
retval = pam_get_user( pamh, &name, "Username: "******"auth: could not identify user");
}
AUTH_RETURN;
}
if (on( SMB_DEBUG, ctrl )) {
_log_err(pamh, LOG_DEBUG, "username [%s] obtained", name );
}
if (geteuid() != 0) {
_log_err(pamh, LOG_DEBUG, "Cannot access samba password database, not running as root.");
retval = PAM_AUTHINFO_UNAVAIL;
AUTH_RETURN;
}
if (!initialize_password_db(True, NULL)) {
_log_err(pamh, LOG_ALERT, "Cannot access samba password database" );
retval = PAM_AUTHINFO_UNAVAIL;
AUTH_RETURN;
}
sampass = samu_new( NULL );
if (!sampass) {
_log_err(pamh, LOG_ALERT, "Cannot talloc a samu struct" );
retval = nt_status_to_pam(NT_STATUS_NO_MEMORY);
AUTH_RETURN;
}
found = pdb_getsampwnam( sampass, name );
if (on( SMB_MIGRATE, ctrl )) {
retval = _smb_add_user(pamh, ctrl, name, sampass, found);
TALLOC_FREE(sampass);
AUTH_RETURN;
}
if (!found) {
_log_err(pamh, LOG_ALERT, "Failed to find entry for user %s.", name);
retval = PAM_USER_UNKNOWN;
TALLOC_FREE(sampass);
sampass = NULL;
AUTH_RETURN;
}
/* if this user does not have a password... */
if (_smb_blankpasswd( ctrl, sampass )) {
TALLOC_FREE(sampass);
retval = PAM_SUCCESS;
AUTH_RETURN;
}
/* get this user's authentication token */
retval = _smb_read_password(pamh, ctrl, NULL, "Password: "******"auth: no password provided for [%s]", name);
TALLOC_FREE(sampass);
AUTH_RETURN;
}
/* verify the password of this user */
retval = _smb_verify_password( pamh, sampass, p, ctrl );
TALLOC_FREE(sampass);
p = NULL;
AUTH_RETURN;
}
/*
* Do some module- and library-wide intializations
*/
static void
SMBC_module_init(void * punused)
{
bool conf_loaded = False;
char *home = NULL;
TALLOC_CTX *frame = talloc_stackframe();
load_case_tables();
setup_logging("libsmbclient", True);
/* Here we would open the smb.conf file if needed ... */
lp_set_in_client(True);
home = getenv("HOME");
if (home) {
char *conf = NULL;
if (asprintf(&conf, "%s/.smb/smb.conf", home) > 0) {
if (lp_load(conf, True, False, False, True)) {
conf_loaded = True;
} else {
DEBUG(5, ("Could not load config file: %s\n",
conf));
}
SAFE_FREE(conf);
}
}
if (!conf_loaded) {
/*
* Well, if that failed, try the get_dyn_CONFIGFILE
* Which points to the standard locn, and if that
* fails, silently ignore it and use the internal
* defaults ...
*/
if (!lp_load(get_dyn_CONFIGFILE(), True, False, False, False)) {
DEBUG(5, ("Could not load config file: %s\n",
get_dyn_CONFIGFILE()));
} else if (home) {
char *conf;
/*
* We loaded the global config file. Now lets
* load user-specific modifications to the
* global config.
*/
if (asprintf(&conf,
"%s/.smb/smb.conf.append",
home) > 0) {
if (!lp_load(conf, True, False, False, False)) {
DEBUG(10,
("Could not append config file: "
"%s\n",
conf));
}
SAFE_FREE(conf);
}
}
}
load_interfaces(); /* Load the list of interfaces ... */
reopen_logs(); /* Get logging working ... */
/*
* Block SIGPIPE (from lib/util_sock.c: write())
* It is not needed and should not stop execution
*/
BlockSignals(True, SIGPIPE);
/* Create the mutex we'll use to protect initialized_ctx_count */
if (SMB_THREAD_CREATE_MUTEX("initialized_ctx_count_mutex",
initialized_ctx_count_mutex) != 0) {
smb_panic("SMBC_module_init: "
"failed to create 'initialized_ctx_count' mutex");
}
TALLOC_FREE(frame);
}
int /* O - Exit status */
main(int argc, /* I - Number of command-line arguments */
char *argv[])
{ /* I - Command-line arguments */
int i; /* Looping var */
int copies; /* Number of copies */
int port; /* Port number */
char uri[1024], /* URI */
*sep, /* Pointer to separator */
*tmp, *tmp2, /* Temp pointers to do escaping */
*password; /* Password */
char *username, /* Username */
*server, /* Server name */
*printer;/* Printer name */
const char *workgroup; /* Workgroup */
FILE *fp; /* File to print */
int status = 1; /* Status of LPD job */
struct cli_state *cli; /* SMB interface */
char null_str[1];
int tries = 0;
bool need_auth = true;
const char *dev_uri;
TALLOC_CTX *frame = talloc_stackframe();
null_str[0] = '\0';
/*
* we expect the URI in argv[0]. Detect the case where it is in
* argv[1] and cope
*/
if (argc > 2 && strncmp(argv[0], "smb://", 6) &&
strncmp(argv[1], "smb://", 6) == 0) {
argv++;
argc--;
}
if (argc == 1) {
/*
* NEW! In CUPS 1.1 the backends are run with no arguments
* to list the available devices. These can be devices
* served by this backend or any other backends (i.e. you
* can have an SNMP backend that is only used to enumerate
* the available network printers... :)
*/
list_devices();
status = 0;
goto done;
}
if (argc < 6 || argc > 7) {
fprintf(stderr,
"Usage: %s [DEVICE_URI] job-id user title copies options [file]\n"
" The DEVICE_URI environment variable can also contain the\n"
" destination printer:\n"
"\n"
" smb://[username:password@][workgroup/]server[:port]/printer\n",
argv[0]);
goto done;
}
/*
* If we have 7 arguments, print the file named on the command-line.
* Otherwise, print data from stdin...
*/
if (argc == 6) {
/*
* Print from Copy stdin to a temporary file...
*/
fp = stdin;
copies = 1;
} else if ((fp = fopen(argv[6], "rb")) == NULL) {
perror("ERROR: Unable to open print file");
goto done;
} else {
copies = atoi(argv[4]);
}
/*
* Find the URI...
*/
dev_uri = getenv("DEVICE_URI");
if (dev_uri) {
strncpy(uri, dev_uri, sizeof(uri) - 1);
} else if (strncmp(argv[0], "smb://", 6) == 0) {
strncpy(uri, argv[0], sizeof(uri) - 1);
} else {
fputs("ERROR: No device URI found in DEVICE_URI environment variable or argv[0] !\n", stderr);
goto done;
}
uri[sizeof(uri) - 1] = '\0';
/*
* Extract the destination from the URI...
*/
if ((sep = strrchr_m(uri, '@')) != NULL) {
tmp = uri + 6;
*sep++ = '\0';
/* username is in tmp */
server = sep;
/*
* Extract password as needed...
*/
if ((tmp2 = strchr_m(tmp, ':')) != NULL) {
*tmp2++ = '\0';
password = uri_unescape_alloc(tmp2);
} else {
password = null_str;
}
username = uri_unescape_alloc(tmp);
} else {
if ((username = getenv("AUTH_USERNAME")) == NULL) {
username = null_str;
}
if ((password = getenv("AUTH_PASSWORD")) == NULL) {
password = null_str;
}
server = uri + 6;
}
tmp = server;
if ((sep = strchr_m(tmp, '/')) == NULL) {
fputs("ERROR: Bad URI - need printer name!\n", stderr);
goto done;
}
*sep++ = '\0';
tmp2 = sep;
if ((sep = strchr_m(tmp2, '/')) != NULL) {
/*
* Convert to smb://[username:password@]workgroup/server/printer...
*/
*sep++ = '\0';
workgroup = uri_unescape_alloc(tmp);
server = uri_unescape_alloc(tmp2);
printer = uri_unescape_alloc(sep);
} else {
workgroup = NULL;
server = uri_unescape_alloc(tmp);
printer = uri_unescape_alloc(tmp2);
}
if ((sep = strrchr_m(server, ':')) != NULL) {
*sep++ = '\0';
port = atoi(sep);
} else {
port = 0;
}
/*
* Setup the SAMBA server state...
*/
setup_logging("smbspool", DEBUG_STDOUT);
lp_set_in_client(True); /* Make sure that we tell lp_load we are */
load_case_tables();
if (!lp_load(get_dyn_CONFIGFILE(), True, False, False, True)) {
fprintf(stderr, "ERROR: Can't load %s - run testparm to debug it\n", get_dyn_CONFIGFILE());
goto done;
}
if (workgroup == NULL) {
workgroup = lp_workgroup();
}
load_interfaces();
do {
cli = smb_connect(workgroup, server, port, printer,
username, password, argv[2], &need_auth);
if (cli == NULL) {
if (need_auth) {
exit(2);
} else if (getenv("CLASS") == NULL) {
fprintf(stderr, "ERROR: Unable to connect to CIFS host, will retry in 60 seconds...\n");
sleep(60);
tries++;
} else {
fprintf(stderr, "ERROR: Unable to connect to CIFS host, trying next printer...\n");
goto done;
}
}
} while ((cli == NULL) && (tries < MAX_RETRY_CONNECT));
if (cli == NULL) {
fprintf(stderr, "ERROR: Unable to connect to CIFS host after (tried %d times)\n", tries);
goto done;
}
/*
* Now that we are connected to the server, ignore SIGTERM so that we
* can finish out any page data the driver sends (e.g. to eject the
* current page... Only ignore SIGTERM if we are printing data from
* stdin (otherwise you can't cancel raw jobs...)
*/
if (argc < 7) {
CatchSignal(SIGTERM, SIG_IGN);
}
/*
* Queue the job...
*/
for (i = 0; i < copies; i++) {
status = smb_print(cli, argv[3] /* title */ , fp);
if (status != 0) {
break;
}
}
cli_shutdown(cli);
/*
* Return the queue status...
*/
done:
TALLOC_FREE(frame);
return (status);
}
int pam_sm_acct_mgmt( pam_handle_t *pamh, int flags,
int argc, const char **argv )
{
unsigned int ctrl;
int retval;
const char *name;
struct samu *sampass = NULL;
void (*oldsig_handler)(int);
/* Samba initialization. */
load_case_tables();
setup_logging( "pam_smbpass", False );
lp_set_in_client(True);
ctrl = set_ctrl( flags, argc, argv );
/* get the username */
retval = pam_get_user( pamh, &name, "Username: "******"acct: could not identify user" );
}
return retval;
}
if (on( SMB_DEBUG, ctrl )) {
_log_err( LOG_DEBUG, "acct: username [%s] obtained", name );
}
if (geteuid() != 0) {
_log_err( LOG_DEBUG, "Cannot access samba password database, not running as root.");
return PAM_AUTHINFO_UNAVAIL;
}
/* Getting into places that might use LDAP -- protect the app
from a SIGPIPE it's not expecting */
oldsig_handler = CatchSignal(SIGPIPE, SIGNAL_CAST SIG_IGN);
if (!initialize_password_db(True, NULL)) {
_log_err( LOG_ALERT, "Cannot access samba password database" );
CatchSignal(SIGPIPE, SIGNAL_CAST oldsig_handler);
return PAM_AUTHINFO_UNAVAIL;
}
/* Get the user's record. */
if (!(sampass = samu_new( NULL ))) {
CatchSignal(SIGPIPE, SIGNAL_CAST oldsig_handler);
/* malloc fail. */
return nt_status_to_pam(NT_STATUS_NO_MEMORY);
}
if (!pdb_getsampwnam(sampass, name )) {
_log_err( LOG_DEBUG, "acct: could not identify user" );
CatchSignal(SIGPIPE, SIGNAL_CAST oldsig_handler);
return PAM_USER_UNKNOWN;
}
/* check for lookup failure */
if (!strlen(pdb_get_username(sampass)) ) {
CatchSignal(SIGPIPE, SIGNAL_CAST oldsig_handler);
return PAM_USER_UNKNOWN;
}
if (pdb_get_acct_ctrl(sampass) & ACB_DISABLED) {
if (on( SMB_DEBUG, ctrl )) {
_log_err( LOG_DEBUG
, "acct: account %s is administratively disabled", name );
}
make_remark( pamh, ctrl, PAM_ERROR_MSG
, "Your account has been disabled; "
"please see your system administrator." );
CatchSignal(SIGPIPE, SIGNAL_CAST oldsig_handler);
return PAM_ACCT_EXPIRED;
}
/* TODO: support for expired passwords. */
CatchSignal(SIGPIPE, SIGNAL_CAST oldsig_handler);
return PAM_SUCCESS;
}