static
int pscom_psm_connect(pscom_con_t *con, int con_fd)
{
int arch = PSCOM_ARCH_PSM;
pspsm_con_info_t *ci = pspsm_con_create();
pspsm_info_msg_t msg;
pspsm_info_msg_t my_msg;
if (pspsm_init() || !ci) goto dont_use;
if (pspsm_con_init(ci)) goto dont_use;
ci->con = con;
/* We want talk psm */
pscom_writeall(con_fd, &arch, sizeof(arch));
/* step 1 */
if ((pscom_readall(con_fd, &arch, sizeof(arch)) != sizeof(arch)) ||
(arch != PSCOM_ARCH_PSM)) {
goto err_remote;
}
/* step 2 : recv connection id's */
if ((pscom_readall(con_fd, &msg, sizeof(msg)) != sizeof(msg))) {
goto err_remote;
}
/* step 3: send my connection id's */
pspsm_con_get_info_msg(ci, &my_msg);
pscom_writeall(con_fd, &my_msg, sizeof(my_msg));
/* Connect */
if (pspsm_con_connect(ci, &msg)) {
/* ToDo: bad! How to inform the peer about the error? */
DPRINT(0, "Psm pspsm_con_connect() failed!");
goto err_local;
}
pscom_psm_con_init(con, con_fd, ci);
return 1;
/* --- */
err_local:
err_remote:
dont_use:
if (ci) {
pspsm_con_cleanup(ci);
pspsm_con_free(ci);
}
return 0;
}
static
int pscom_psm_accept(pscom_con_t *con, int con_fd)
{
int arch = PSCOM_ARCH_PSM;
pspsm_con_info_t *ci = pspsm_con_create();
pspsm_info_msg_t msg;
if (pspsm_init() || !ci) goto out_nopsm;
if (pspsm_con_init(ci)) goto dont_use;
/* step 1: Yes, we talk psm. */
pscom_writeall(con_fd, &arch, sizeof(arch));
/* step 2: Send Connection id's */
pspsm_con_get_info_msg(ci, &msg);
pscom_writeall(con_fd, &msg, sizeof(msg));
/* step 3 : recv connection id's */
if ((pscom_readall(con_fd, &msg, sizeof(msg)) != sizeof(msg))) {
goto err_remote;
}
/* Connect */
if (pspsm_con_connect(ci, &msg)) {
/* ToDo: bad! How to inform the peer about the error? */
DPRINT(0, "Psm pspsm_con_connect() failed!");
goto err_local;
}
pscom_psm_con_init(con, con_fd, ci);
return 1;
/* --- */
err_local:
err_remote:
if (ci) pspsm_con_cleanup(ci);
dont_use:
if (ci) pspsm_con_free(ci);
return 0;
/* --- */
out_nopsm:
arch = PSCOM_ARCH_ERROR;
pscom_writeall(con_fd, &arch, sizeof(arch));
return 0;
/* --- */
}
static
void pscom_psm_handshake(pscom_con_t *con, int type, void *data, unsigned size)
{
switch (type) {
case PSCOM_INFO_ARCH_REQ: {
pspsm_info_msg_t msg;
pspsm_con_info_t *ci = pspsm_con_create();
con->arch.psm.ci = ci;
con->arch.psm.reading = 0;
if (pspsm_con_init(ci, con)) goto error_con_init;
/* send my connection id's */
pspsm_con_get_info_msg(ci, &msg);
pscom_precon_send(con->precon, PSCOM_INFO_PSM_ID, &msg, sizeof(msg));
break; /* Next is PSCOM_INFO_PSM_ID or PSCOM_INFO_ARCH_NEXT */
}
case PSCOM_INFO_PSM_ID: {
pspsm_info_msg_t *msg = data;
assert(sizeof(*msg) == size);
if (pspsm_con_connect(con->arch.psm.ci, msg)) goto error_con_connect;
pscom_precon_send(con->precon, PSCOM_INFO_ARCH_OK, NULL, 0);
break; /* Next is EOF or ARCH_NEXT */
}
case PSCOM_INFO_ARCH_NEXT:
/* Something failed. Cleanup. */
pscom_psm_con_cleanup(con);
break; /* Done. Psm failed */
case PSCOM_INFO_EOF:
pscom_psm_init_con(con);
break; /* Done. Use Psm */
}
return;
/* --- */
error_con_connect:
error_con_init:
pscom_psm_con_cleanup(con);
pscom_precon_send_PSCOM_INFO_ARCH_NEXT(con->precon);
}
