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#include <errno.h>
#include <talloc.h>
#include "util/util.h"
#include "confdb/confdb.h"
#include "responder/pam/pam_LOCAL_domain.h"
#include "responder/common/responder_common.h"
#include "responder/common/responder_cmd.h"
#include "responder/common/responder_packet.h"
#include "responder/pam/pamsrv.h"
static int pam_parse_in_data(uint8_t *body, size_t blen, struct pam_data *pd) {
int start;
int end;
int last=blen-1;
char *delim;
start = end = 0;
while ( end < last && body[end++]!='\0');
pd->user = (char *) &body[start];
delim = strchr(pd->user, SSS_DOMAIN_DELIM);
if (delim != NULL ) {
*delim = '\0';
pd->domain = delim+1;
} else {
pd->domain = NULL;
}
start = end;
while ( end < last && body[end++]!='\0');
pd->service = (char *) &body[start];
start = end;
while ( end < last && body[end++]!='\0');
pd->tty = (char *) &body[start];
start = end;
while ( end < last && body[end++]!='\0');
pd->ruser = (char *) &body[start];
start = end;
while ( end < last && body[end++]!='\0');
pd->rhost = (char *) &body[start];
start = end;
pd->authtok_type = (int) body[start];
start += sizeof(uint32_t);
pd->authtok_size = (int) body[start];
start += sizeof(uint32_t);
end = start+pd->authtok_size;
if ( pd->authtok_size == 0 ) {
pd->authtok = NULL;
} else {
if ( end <= blen ) {
pd->authtok = (uint8_t *) &body[start];
} else {
DEBUG(1, ("Invalid authtok size: %d\n", pd->authtok_size));
return EINVAL;
}
}
start = end;
pd->newauthtok_type = (int) body[start];
start += sizeof(uint32_t);
pd->newauthtok_size = (int) body[start];
start += sizeof(uint32_t);
end = start+pd->newauthtok_size;
if ( pd->newauthtok_size == 0 ) {
pd->newauthtok = NULL;
} else {
if ( end <= blen ) {
pd->newauthtok = (uint8_t *) &body[start];
} else {
DEBUG(1, ("Invalid newauthtok size: %d\n", pd->newauthtok_size));
return EINVAL;
}
}
DEBUG_PAM_DATA(4, pd);
return EOK;
}
static void pam_reply(struct cli_ctx *cctx,
int pam_status, const char *domain)
{
struct sss_cmd_ctx *nctx;
int32_t ret_status = pam_status;
uint8_t *body;
size_t blen;
int ret;
int err = EOK;
DEBUG(4, ("pam_reply get called.\n"));
nctx = talloc_zero(cctx, struct sss_cmd_ctx);
if (!nctx) {
err = ENOMEM;
goto done;
}
nctx->cctx = cctx;
nctx->check_expiration = true;
ret = sss_packet_new(cctx->creq, 0, sss_packet_get_cmd(cctx->creq->in),
&cctx->creq->out);
if (ret != EOK) {
err = ret;
goto done;
}
ret = sss_packet_grow(cctx->creq->out, sizeof(int) + strlen(domain)+1 );
if (ret != EOK) {
err = ret;
goto done;
}
sss_packet_get_body(cctx->creq->out, &body, &blen);
DEBUG(4, ("blen: %d\n", blen));
memcpy(body, &ret_status, sizeof(int32_t));
memcpy(body+sizeof(int32_t), domain, strlen(domain)+1);
done:
sss_cmd_done(nctx);
}
static int pam_forwarder(struct cli_ctx *cctx, int pam_cmd)
{
uint8_t *body;
size_t blen;
int ret;
struct pam_data *pd;
char *default_domain;
pd = talloc(cctx, struct pam_data);
if (pd == NULL) return ENOMEM;
sss_packet_get_body(cctx->creq->in, &body, &blen);
if (blen >= sizeof(uint32_t) &&
((uint32_t *)(&body[blen - sizeof(uint32_t)]))[0] != END_OF_PAM_REQUEST) {
DEBUG(1, ("Received data not terminated.\n"));
talloc_free(pd);
return EINVAL;
}
pd->cmd = pam_cmd;
ret=pam_parse_in_data(body, blen, pd);
if( ret != 0 ) {
talloc_free(pd);
return EINVAL;
}
if (pd->domain == NULL) {
ret = confdb_get_string(cctx->nctx->cdb, cctx, "config/domains",
"defaultDomain", "LOCAL", &default_domain);
if (ret != EOK) {
DEBUG(1, ("Failed to call confdb.\n"));
talloc_free(pd);
return ret;
}
pd->domain = default_domain;
DEBUG(4, ("Using default domain [%s].\n", pd->domain));
}
if ( strncasecmp(pd->domain,"LOCAL",5) == 0 ) {
return LOCAL_pam_handler(cctx, pam_reply, pd);
};
ret=pam_dp_send_req(cctx, pam_reply, PAM_DP_TIMEOUT, pd);
DEBUG(4, ("pam_dp_send_req returned %d\n", ret));
return ret;
}
static int pam_cmd_authenticate(struct cli_ctx *cctx) {
DEBUG(4, ("entering pam_cmd_authenticate\n"));
return pam_forwarder(cctx, SSS_PAM_AUTHENTICATE);
}
static int pam_cmd_setcred(struct cli_ctx *cctx) {
DEBUG(4, ("entering pam_cmd_setcred\n"));
return pam_forwarder(cctx, SSS_PAM_SETCRED);
}
static int pam_cmd_acct_mgmt(struct cli_ctx *cctx) {
DEBUG(4, ("entering pam_cmd_acct_mgmt\n"));
return pam_forwarder(cctx, SSS_PAM_ACCT_MGMT);
}
static int pam_cmd_open_session(struct cli_ctx *cctx) {
DEBUG(4, ("entering pam_cmd_open_session\n"));
return pam_forwarder(cctx, SSS_PAM_OPEN_SESSION);
}
static int pam_cmd_close_session(struct cli_ctx *cctx) {
DEBUG(4, ("entering pam_cmd_close_session\n"));
return pam_forwarder(cctx, SSS_PAM_CLOSE_SESSION);
}
static int pam_cmd_chauthtok(struct cli_ctx *cctx) {
DEBUG(4, ("entering pam_cmd_chauthtok\n"));
return pam_forwarder(cctx, SSS_PAM_CHAUTHTOK);
}
struct sss_cmd_table *register_sss_cmds(void) {
static struct sss_cmd_table sss_cmds[] = {
{SSS_GET_VERSION, sss_cmd_get_version},
{SSS_PAM_AUTHENTICATE, pam_cmd_authenticate},
{SSS_PAM_SETCRED, pam_cmd_setcred},
{SSS_PAM_ACCT_MGMT, pam_cmd_acct_mgmt},
{SSS_PAM_OPEN_SESSION, pam_cmd_open_session},
{SSS_PAM_CLOSE_SESSION, pam_cmd_close_session},
{SSS_PAM_CHAUTHTOK, pam_cmd_chauthtok},
{SSS_CLI_NULL, NULL}
};
return sss_cmds;
}
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