void handle_mm(struct session_info *s, struct gsm48_hdr *dtap, unsigned dtap_len, uint32_t fn)
{
if (dtap_len < sizeof(struct gsm48_hdr)) {
SET_MSG_INFO(s, "FAILED SANITY CHECKS (MM_LEN)");
return;
}
switch (dtap->msg_type & 0x3f) {
case 0x01:
session_reset(s, 1);
s->started = 1;
SET_MSG_INFO(s, "IMSI DETACH");
s->detach = 1;
s->mo = 1;
handle_detach(s, dtap->data);
break;
case 0x02:
SET_MSG_INFO(s, "LOC UPD ACCEPT");
handle_loc_upd_acc(s, dtap->data, dtap_len - 2);
break;
case 0x04:
SET_MSG_INFO(s, "LOC UPD REJECT cause=%d", dtap->data[0]);
s->locupd = 1;
s->lu_reject = 1;
s->lu_rej_cause = dtap->data[0];
s->mo = 1;
break;
case 0x08:
session_reset(s, 1);
if (dtap_len < sizeof(struct gsm48_loc_upd_req)) {
SET_MSG_INFO(s, "FAILED SANITY CHECKS (LUR_DTAP_SIZE)");
break;
}
SET_MSG_INFO(s, "LOC UPD REQUEST");
handle_loc_upd_req(s, dtap->data);
break;
case 0x12:
if ((dtap_len > 19) && (dtap->data[17] == 0x20) && (dtap->data[18] == 0x10)) {
SET_MSG_INFO(s, "AUTH REQUEST (UMTS)");
s->auth = 2;
} else {
SET_MSG_INFO(s, "AUTH REQUEST (GSM)");
s->auth = 1;
}
if (!s->auth_req_fn) {
if (fn) {
s->auth_req_fn = fn;
} else {
s->auth_req_fn = GSM_MAX_FN;
}
}
break;
case 0x14:
if ((dtap_len > 6) && (dtap->data[4] == 0x21) && (dtap->data[5] == 0x04)) {
SET_MSG_INFO(s, "AUTH RESPONSE (UMTS)");
if (!s->auth) {
s->auth = 2;
}
} else {
SET_MSG_INFO(s, "AUTH RESPONSE (GSM)");
if (!s->auth) {
s->auth = 1;
}
}
if (!s->auth_resp_fn) {
if (fn) {
s->auth_resp_fn = fn;
} else {
s->auth_resp_fn = GSM_MAX_FN;
}
}
break;
case 0x18:
switch (dtap->data[0] & GSM_MI_TYPE_MASK) {
case GSM_MI_TYPE_IMSI:
SET_MSG_INFO(s, "IDENTITY REQUEST, IMSI");
if (s->cipher) {
s->iden_imsi_ac = 1;
} else {
s->iden_imsi_bc = 1;
}
break;
case GSM_MI_TYPE_IMEI:
case GSM_MI_TYPE_IMEISV:
SET_MSG_INFO(s, "IDENTITY REQUEST, IMEI");
if (s->cipher) {
s->iden_imei_ac = 1;
} else {
s->iden_imei_bc = 1;
}
break;
}
break;
case 0x19:
handle_mi(s, &dtap->data[1], dtap->data[0], 0);
switch (dtap->data[1] & GSM_MI_TYPE_MASK) {
case GSM_MI_TYPE_IMSI:
SET_MSG_INFO(s, "IDENTITY RESPONSE, IMSI %s", s->imsi);
if (s->cipher) {
s->iden_imsi_ac = 1;
} else {
s->iden_imsi_bc = 1;
}
break;
case GSM_MI_TYPE_IMEI:
case GSM_MI_TYPE_IMEISV:
SET_MSG_INFO(s, "IDENTITY RESPONSE, IMEI %s", s->imei);
if (s->cipher) {
s->iden_imei_ac = 1;
} else {
s->iden_imei_bc = 1;
}
break;
}
break;
case 0x1a:
SET_MSG_INFO(s, "TMSI REALLOC COMMAND");
s->tmsi_realloc = 1;
handle_lai(s, dtap->data, -1);
handle_mi(s, &dtap->data[6], dtap->data[5], 1);
break;
case 0x1b:
SET_MSG_INFO(s, "TMSI REALLOC COMPLETE");
s->tmsi_realloc = 1;
break;
case 0x21:
SET_MSG_INFO(s, "CM SERVICE ACCEPT");
s->mo = 1;
break;
case 0x23:
SET_MSG_INFO(s, "CM SERVICE ABORT");
s->mo = 1;
break;
case 0x24:
SET_MSG_INFO(s, "CM SERVICE REQUEST");
session_reset(s, 1);
s->started = 1;
s->closed = 0;
s->serv_req = 1;
s->mo = 1;
handle_cmreq(s, dtap->data);
break;
case 0x29:
SET_MSG_INFO(s, "ABORT");
s->abort = 1;
break;
case 0x32:
SET_MSG_INFO(s, "MM INFORMATION");
break;
default:
SET_MSG_INFO(s, "UNKNOWN MM (%02x)", dtap->msg_type & 0x3f);
s->unknown = 1;
}
}
bool sys_ptrace( int sc_num, pid_t pid, pid_state *state )
{
bool ret=true;
if( state->state==pid_state::NONE ) {
state->context_state[0]=ptlib_get_argument( pid, 1 ); // request
state->context_state[1]=ptlib_get_argument( pid, 2 ); // pid
state->context_state[2]=ptlib_get_argument( pid, 3 ); // addr
state->context_state[3]=ptlib_get_argument( pid, 4 ); // data
dlog("ptrace: " PID_F " ptrace( %d, " PID_F ", %p, %p )\n", pid, (int)state->context_state[0], (pid_t)state->context_state[1],
(void*)state->context_state[2], (void*)state->context_state[3] );
ptlib_set_syscall( pid, PREF_NOP );
state->state=pid_state::REDIRECT2;
} else if( state->state==pid_state::REDIRECT2 ) {
state->state=pid_state::NONE;
// Let's see what whether we need to succeed
switch( state->context_state[0] ) {
case PTRACE_TRACEME:
if( begin_trace( state->parent, pid ) ) {
dlog("ptrace: %d PTRACE_TRACEME parent " PID_F "\n", pid, state->parent );
ptlib_set_retval( pid, 0 );
} else {
dlog("ptrace: %d PTRACE_TRACEME failed %s\n", pid, strerror(errno) );
ptlib_set_error( pid, state->orig_sc, errno );
}
break;
case PTRACE_ATTACH:
if( begin_trace( pid, (pid_t)state->context_state[1] ) ) {
dlog("ptrace: " PID_F " PTRACE_ATTACH(" PID_F ") succeeded\n", pid, (pid_t)state->context_state[1] );
ptlib_set_retval( pid, 0 );
} else {
dlog("ptrace: " PID_F " PTRACE_ATTACH(" PID_F ") failed %s\n", pid, (pid_t)state->context_state[1], strerror(errno) );
ptlib_set_error( pid, state->orig_sc, errno );
}
break;
case PTRACE_PEEKTEXT:
case PTRACE_PEEKDATA:
#if HAVE_PTRACE_PEEKUSER
case PTRACE_PEEKUSER:
#endif
handle_peek_data( pid, state );
break;
case PTRACE_POKETEXT:
case PTRACE_POKEDATA:
#if HAVE_PTRACE_PEEKUSER
case PTRACE_POKEUSER:
#endif
handle_poke_data( pid, state );
break;
#if 0
case PTRACE_GETREGS:
case PTRACE_GETFPREGS:
dlog("ptrace: %d GETREGS not yet implemented\n", pid);
ptlib_set_error( pid, state->orig_sc, EINVAL );
break;
case PTRACE_SETREGS:
case PTRACE_SETFPREGS:
dlog("ptrace: %d SETREGS not yet implemented\n", pid);
ptlib_set_error( pid, state->orig_sc, EINVAL );
break;
case PTRACE_GETSIGINFO:
dlog("ptrace: %d GETSIGINFO not yet implemented\n", pid);
ptlib_set_error( pid, state->orig_sc, EINVAL );
break;
case PTRACE_SETSIGINFO:
dlog("ptrace: %d SETSIGINFO not yet implemented\n", pid);
ptlib_set_error( pid, state->orig_sc, EINVAL );
break;
#endif
case PTRACE_SINGLESTEP:
// We do not support single step right now
ptlib_set_error( pid, state->orig_sc, EINVAL );
dlog("ptrace: " PID_F " tried to call SINGLESTEP on " PID_F "\n", pid, (pid_t)state->context_state[1]);
break;
case PTRACE_CONT:
case PTRACE_SYSCALL:
handle_cont_syscall( pid, state );
break;
case PTRACE_KILL:
handle_kill( pid, state );
break;
case PTRACE_DETACH:
handle_detach( pid, state );
break;
default:
dlog("ptrace: " PID_F " Unsupported option %lx\n", pid, state->context_state[0] );
ptlib_set_error(pid, state->orig_sc, EINVAL);
break;
}
ptlib_set_syscall( pid, state->orig_sc );
}
return ret;
}