#include "includes.h"
static void NTLMSSPcalc_p( pipes_struct *p, unsigned char *data, int len)
{
unsigned char *hash = p->ntlmssp_hash;
unsigned char index_i = hash[256];
unsigned char index_j = hash[257];
int ind;
for( ind = 0; ind < len; ind++) {
unsigned char tc;
unsigned char t;
index_i++;
index_j += hash[index_i];
tc = hash[index_i];
hash[index_i] = hash[index_j];
hash[index_j] = tc;
t = hash[index_i] + hash[index_j];
data[ind] = data[ind] ^ hash[t];
}
hash[256] = index_i;
hash[257] = index_j;
}
BOOL create_next_pdu(pipes_struct *p)
{
RPC_HDR_RESP hdr_resp;
BOOL auth_verify = ((p->ntlmssp_chal_flags & NTLMSSP_NEGOTIATE_SIGN) != 0);
BOOL auth_seal = ((p->ntlmssp_chal_flags & NTLMSSP_NEGOTIATE_SEAL) != 0);
uint32 data_len;
uint32 data_space_available;
uint32 data_len_left;
prs_struct outgoing_pdu;
char *data;
char *data_from;
uint32 data_pos;
if(p->fault_state) {
setup_fault_pdu(p, NT_STATUS(0x1c010002));
return True;
}
memset((char *)&hdr_resp, '\0', sizeof(hdr_resp));
p->hdr.pkt_type = RPC_RESPONSE;
if (p->out_data.data_sent_length == 0)
p->hdr.flags = RPC_FLG_FIRST;
else
p->hdr.flags = 0;
data_space_available = sizeof(p->out_data.current_pdu) - RPC_HEADER_LEN - RPC_HDR_RESP_LEN;
if(p->ntlmssp_auth_validated)
data_space_available -= (RPC_HDR_AUTH_LEN + RPC_AUTH_NTLMSSP_CHK_LEN);
data_len_left = prs_offset(&p->out_data.rdata) - p->out_data.data_sent_length;
if(!data_len_left) {
DEBUG(0,("create_next_pdu: no data left to send !\n"));
return False;
}
data_len = MIN(data_len_left, data_space_available);
hdr_resp.alloc_hint = data_len_left;
if (p->ntlmssp_auth_validated) {
p->hdr.frag_len = RPC_HEADER_LEN + RPC_HDR_RESP_LEN + data_len +
RPC_HDR_AUTH_LEN + RPC_AUTH_NTLMSSP_CHK_LEN;
p->hdr.auth_len = RPC_AUTH_NTLMSSP_CHK_LEN;
} else {
p->hdr.frag_len = RPC_HEADER_LEN + RPC_HDR_RESP_LEN + data_len;
p->hdr.auth_len = 0;
}
if(p->out_data.data_sent_length + data_len >= prs_offset(&p->out_data.rdata))
p->hdr.flags |= RPC_FLG_LAST;
prs_init( &outgoing_pdu, 0, p->mem_ctx, MARSHALL);
prs_give_memory( &outgoing_pdu, (char *)p->out_data.current_pdu, sizeof(p->out_data.current_pdu), False);
if(!smb_io_rpc_hdr("hdr", &p->hdr, &outgoing_pdu, 0)) {
DEBUG(0,("create_next_pdu: failed to marshall RPC_HDR.\n"));
prs_mem_free(&outgoing_pdu);
return False;
}
if(!smb_io_rpc_hdr_resp("resp", &hdr_resp, &outgoing_pdu, 0)) {
DEBUG(0,("create_next_pdu: failed to marshall RPC_HDR_RESP.\n"));
prs_mem_free(&outgoing_pdu);
return False;
}
data_pos = prs_offset(&outgoing_pdu);
data_from = prs_data_p(&p->out_data.rdata) + p->out_data.data_sent_length;
if(!prs_append_data(&outgoing_pdu, data_from, data_len)) {
DEBUG(0,("create_next_pdu: failed to copy %u bytes of data.\n", (unsigned int)data_len));
prs_mem_free(&outgoing_pdu);
return False;
}
data = prs_data_p(&outgoing_pdu) + data_pos;
if (p->hdr.auth_len > 0) {
uint32 crc32 = 0;
DEBUG(5,("create_next_pdu: sign: %s seal: %s data %d auth %d\n",
BOOLSTR(auth_verify), BOOLSTR(auth_seal), data_len, p->hdr.auth_len));
if (auth_seal) {
crc32 = crc32_calc_buffer(data, data_len);
NTLMSSPcalc_p(p, (uchar*)data, data_len);
}
if (auth_seal || auth_verify) {
RPC_HDR_AUTH auth_info;
init_rpc_hdr_auth(&auth_info, NTLMSSP_AUTH_TYPE, NTLMSSP_AUTH_LEVEL,
(auth_verify ? RPC_HDR_AUTH_LEN : 0), (auth_verify ? 1 : 0));
if(!smb_io_rpc_hdr_auth("hdr_auth", &auth_info, &outgoing_pdu, 0)) {
DEBUG(0,("create_next_pdu: failed to marshall RPC_HDR_AUTH.\n"));
prs_mem_free(&outgoing_pdu);
return False;
}
}
if (auth_verify) {
RPC_AUTH_NTLMSSP_CHK ntlmssp_chk;
char *auth_data = prs_data_p(&outgoing_pdu);
p->ntlmssp_seq_num++;
init_rpc_auth_ntlmssp_chk(&ntlmssp_chk, NTLMSSP_SIGN_VERSION,
crc32, p->ntlmssp_seq_num++);
auth_data = prs_data_p(&outgoing_pdu) + prs_offset(&outgoing_pdu) + 4;
if(!smb_io_rpc_auth_ntlmssp_chk("auth_sign", &ntlmssp_chk, &outgoing_pdu, 0)) {
DEBUG(0,("create_next_pdu: failed to marshall RPC_AUTH_NTLMSSP_CHK.\n"));
prs_mem_free(&outgoing_pdu);
return False;
}
NTLMSSPcalc_p(p, (uchar*)auth_data, RPC_AUTH_NTLMSSP_CHK_LEN - 4);
}
}
p->out_data.data_sent_length += data_len;
p->out_data.current_pdu_len = p->hdr.frag_len;
p->out_data.current_pdu_sent = 0;
prs_mem_free(&outgoing_pdu);
return True;
}
static BOOL api_pipe_ntlmssp_verify(pipes_struct *p, RPC_AUTH_NTLMSSP_RESP *ntlmssp_resp)
{
uchar lm_owf[24];
uchar nt_owf[24];
fstring user_name;
fstring pipe_user_name;
fstring domain;
fstring wks;
BOOL guest_user = False;
SAM_ACCOUNT *sampass = NULL;
uchar null_smb_passwd[16];
uchar *smb_passwd_ptr = NULL;
DEBUG(5,("api_pipe_ntlmssp_verify: checking user details\n"));
memset(p->user_name, '\0', sizeof(p->user_name));
memset(p->pipe_user_name, '\0', sizeof(p->pipe_user_name));
memset(p->domain, '\0', sizeof(p->domain));
memset(p->wks, '\0', sizeof(p->wks));
delete_nt_token(&p->pipe_user.nt_user_token);
p->pipe_user.ngroups = 0;
safe_free( p->pipe_user.groups);
memset(null_smb_passwd,0,16);
if (p->ntlmssp_chal_flags & NTLMSSP_NEGOTIATE_UNICODE) {
fstrcpy(user_name, dos_unistrn2((uint16*)ntlmssp_resp->user, ntlmssp_resp->hdr_usr.str_str_len/2));
fstrcpy(domain, dos_unistrn2((uint16*)ntlmssp_resp->domain, ntlmssp_resp->hdr_domain.str_str_len/2));
fstrcpy(wks, dos_unistrn2((uint16*)ntlmssp_resp->wks, ntlmssp_resp->hdr_wks.str_str_len/2));
} else {
fstrcpy(user_name, ntlmssp_resp->user);
fstrcpy(domain, ntlmssp_resp->domain);
fstrcpy(wks, ntlmssp_resp->wks);
}
DEBUG(5,("user: %s domain: %s wks: %s\n", user_name, domain, wks));
memcpy(lm_owf, ntlmssp_resp->lm_resp, sizeof(lm_owf));
memcpy(nt_owf, ntlmssp_resp->nt_resp, sizeof(nt_owf));
#ifdef DEBUG_PASSWORD
DEBUG(100,("lm, nt owfs, chal\n"));
dump_data(100, (char *)lm_owf, sizeof(lm_owf));
dump_data(100, (char *)nt_owf, sizeof(nt_owf));
dump_data(100, (char *)p->challenge, 8);
#endif
if((strlen(user_name) == 0) &&
(ntlmssp_resp->hdr_nt_resp.str_str_len==0))
{
guest_user = True;
fstrcpy(pipe_user_name, lp_guestaccount(-1));
DEBUG(100,("Null user in NTLMSSP verification. Using guest = %s\n", pipe_user_name));
smb_passwd_ptr = null_smb_passwd;
} else {
fstrcpy(pipe_user_name, user_name);
(void)map_username(pipe_user_name);
if (ntlmssp_resp->hdr_lm_resp.str_str_len == 0)
return False;
if (ntlmssp_resp->hdr_nt_resp.str_str_len == 0)
return False;
if (ntlmssp_resp->hdr_usr.str_str_len == 0)
return False;
if (ntlmssp_resp->hdr_domain.str_str_len == 0)
return False;
if (ntlmssp_resp->hdr_wks.str_str_len == 0)
return False;
}
if(!guest_user) {
become_root();
if(!(p->ntlmssp_auth_validated = pass_check_smb(pipe_user_name, domain,
(uchar*)p->challenge, lm_owf, nt_owf, NULL))) {
DEBUG(1,("api_pipe_ntlmssp_verify: User %s\\%s from machine %s \
failed authentication on named pipe %s.\n", domain, pipe_user_name, wks, p->name ));
unbecome_root();
return False;
}
pdb_init_sam(&sampass);
if(!pdb_getsampwnam(sampass, pipe_user_name)) {
DEBUG(1,("api_pipe_ntlmssp_verify: Cannot find user %s in smb passwd database.\n",
pipe_user_name));
pdb_free_sam(sampass);
unbecome_root();
return False;
}
unbecome_root();
if((pdb_get_acct_ctrl(sampass) & ACB_DISABLED) || !pdb_get_lanman_passwd(sampass)) {
DEBUG(1,("Account for user '%s' was disabled.\n", pipe_user_name));
pdb_free_sam(sampass);
return False;
}
if(!pdb_get_nt_passwd(sampass)) {
DEBUG(1,("Account for user '%s' has no NT password hash.\n", pipe_user_name));
pdb_free_sam(sampass);
return False;
}
smb_passwd_ptr = pdb_get_lanman_passwd(sampass);
}
{
uchar p24[24];
NTLMSSPOWFencrypt(smb_passwd_ptr, lm_owf, p24);
{
unsigned char j = 0;
int ind;
unsigned char k2[8];
memcpy(k2, p24, 5);
k2[5] = 0xe5;
k2[6] = 0x38;
k2[7] = 0xb0;
for (ind = 0; ind < 256; ind++)
p->ntlmssp_hash[ind] = (unsigned char)ind;
for( ind = 0; ind < 256; ind++) {
unsigned char tc;
j += (p->ntlmssp_hash[ind] + k2[ind%8]);
tc = p->ntlmssp_hash[ind];
p->ntlmssp_hash[ind] = p->ntlmssp_hash[j];
p->ntlmssp_hash[j] = tc;
}
p->ntlmssp_hash[256] = 0;
p->ntlmssp_hash[257] = 0;
}
p->ntlmssp_seq_num = 0;
}
fstrcpy(p->user_name, user_name);
fstrcpy(p->pipe_user_name, pipe_user_name);
fstrcpy(p->domain, domain);
fstrcpy(p->wks, wks);
p->pipe_user.uid = pdb_get_uid(sampass);
p->pipe_user.gid = pdb_get_gid(sampass);
initialise_groups(pipe_user_name, p->pipe_user.uid, p->pipe_user.gid);
get_current_groups( &p->pipe_user.ngroups, &p->pipe_user.groups);
p->pipe_user.nt_user_token = create_nt_token(p->pipe_user.uid,p->pipe_user.gid,
p->pipe_user.ngroups, p->pipe_user.groups,
guest_user, NULL);
p->ntlmssp_auth_validated = True;
pdb_free_sam(sampass);
return True;
}
struct api_cmd
{
char * pipe_clnt_name;
char * pipe_srv_name;
BOOL (*fn) (pipes_struct *);
};
static struct api_cmd api_fd_commands[] =
{
{ "lsarpc", "lsass", api_ntlsa_rpc },
{ "samr", "lsass", api_samr_rpc },
{ "srvsvc", "ntsvcs", api_srvsvc_rpc },
{ "wkssvc", "ntsvcs", api_wkssvc_rpc },
{ "NETLOGON", "lsass", api_netlog_rpc },
{ "winreg", "winreg", api_reg_rpc },
{ "spoolss", "spoolss", api_spoolss_rpc },
#ifdef WITH_MSDFS
{ "netdfs", "netdfs" , api_netdfs_rpc },
#endif
{ NULL, NULL, NULL }
};
BOOL api_pipe_bind_auth_resp(pipes_struct *p, prs_struct *rpc_in_p)
{
RPC_HDR_AUTHA autha_info;
RPC_AUTH_VERIFIER auth_verifier;
RPC_AUTH_NTLMSSP_RESP ntlmssp_resp;
DEBUG(5,("api_pipe_bind_auth_resp: decode request. %d\n", __LINE__));
if (p->hdr.auth_len == 0) {
DEBUG(0,("api_pipe_bind_auth_resp: No auth field sent !\n"));
return False;
}
if(!smb_io_rpc_hdr_autha("", &autha_info, rpc_in_p, 0)) {
DEBUG(0,("api_pipe_bind_auth_resp: unmarshall of RPC_HDR_AUTHA failed.\n"));
return False;
}
if (autha_info.auth_type != NTLMSSP_AUTH_TYPE || autha_info.auth_level != NTLMSSP_AUTH_LEVEL) {
DEBUG(0,("api_pipe_bind_auth_resp: incorrect auth type (%d) or level (%d).\n",
(int)autha_info.auth_type, (int)autha_info.auth_level ));
return False;
}
if(!smb_io_rpc_auth_verifier("", &auth_verifier, rpc_in_p, 0)) {
DEBUG(0,("api_pipe_bind_auth_resp: unmarshall of RPC_AUTH_VERIFIER failed.\n"));
return False;
}
if (!rpc_auth_verifier_chk(&auth_verifier, "NTLMSSP", NTLMSSP_AUTH)) {
DEBUG(0,("api_pipe_bind_auth_resp: rpc_auth_verifier_chk failed.\n"));
return False;
}
if(!smb_io_rpc_auth_ntlmssp_resp("", &ntlmssp_resp, rpc_in_p, 0)) {
DEBUG(0,("api_pipe_bind_auth_resp: Failed to unmarshall RPC_AUTH_NTLMSSP_RESP.\n"));
return False;
}
if (!api_pipe_ntlmssp_verify(p, &ntlmssp_resp))
return False;
p->pipe_bound = True
;
return True;
}
static BOOL setup_bind_nak(pipes_struct *p)
{
prs_struct outgoing_rpc;
RPC_HDR nak_hdr;
uint16 zero = 0;
prs_mem_free(&p->out_data.rdata);
prs_init( &outgoing_rpc, 0, p->mem_ctx, MARSHALL);
prs_give_memory( &outgoing_rpc, (char *)p->out_data.current_pdu, sizeof(p->out_data.current_pdu), False);
init_rpc_hdr(&nak_hdr, RPC_BINDNACK, RPC_FLG_FIRST | RPC_FLG_LAST,
p->hdr.call_id, RPC_HEADER_LEN + sizeof(uint16), 0);
if(!smb_io_rpc_hdr("", &nak_hdr, &outgoing_rpc, 0)) {
DEBUG(0,("setup_bind_nak: marshalling of RPC_HDR failed.\n"));
prs_mem_free(&outgoing_rpc);
return False;
}
if(!prs_uint16("reject code", &outgoing_rpc, 0, &zero)) {
prs_mem_free(&outgoing_rpc);
return False;
}
p->out_data.data_sent_length = 0;
p->out_data.current_pdu_len = prs_offset(&outgoing_rpc);
p->out_data.current_pdu_sent = 0;
p->pipe_bound = False;
return True;
}
BOOL setup_fault_pdu(pipes_struct *p, NTSTATUS status)
{
prs_struct outgoing_pdu;
RPC_HDR fault_hdr;
RPC_HDR_RESP hdr_resp;
RPC_HDR_FAULT fault_resp;
prs_mem_free(&p->out_data.rdata);
prs_init( &outgoing_pdu, 0, p->mem_ctx, MARSHALL);
prs_give_memory( &outgoing_pdu, (char *)p->out_data.current_pdu, sizeof(p->out_data.current_pdu), False);
init_rpc_hdr(&fault_hdr, RPC_FAULT, RPC_FLG_FIRST | RPC_FLG_LAST | RPC_FLG_NOCALL,
p->hdr.call_id, RPC_HEADER_LEN + RPC_HDR_RESP_LEN + RPC_HDR_FAULT_LEN, 0);
memset((char *)&hdr_resp, '\0', sizeof(hdr_resp));
fault_resp.status = status;
fault_resp.reserved = 0;
if(!smb_io_rpc_hdr("", &fault_hdr, &outgoing_pdu, 0)) {
DEBUG(0,("setup_fault_pdu: marshalling of RPC_HDR failed.\n"));
prs_mem_free(&outgoing_pdu);
return False;
}
if(!smb_io_rpc_hdr_resp("resp", &hdr_resp, &outgoing_pdu, 0)) {
DEBUG(0,("setup_fault_pdu: failed to marshall RPC_HDR_RESP.\n"));
prs_mem_free(&outgoing_pdu);
return False;
}
if(!smb_io_rpc_hdr_fault("fault", &fault_resp, &outgoing_pdu, 0)) {
DEBUG(0,("setup_fault_pdu: failed to marshall RPC_HDR_FAULT.\n"));
prs_mem_free(&outgoing_pdu);
return False;
}
p->out_data.data_sent_length = 0;
p->out_data.current_pdu_len = prs_offset(&outgoing_pdu);
p->out_data.current_pdu_sent = 0;
prs_mem_free(&outgoing_pdu);
return True;
}
BOOL check_bind_req(char* pipe_name, RPC_IFACE* abstract,
RPC_IFACE* transfer)
{
extern struct pipe_id_info pipe_names[];
int i=0;
fstring pname;
fstrcpy(pname,"\\PIPE\\");
fstrcat(pname,pipe_name);
for(i=0;pipe_names[i].client_pipe; i++) {
if(strequal(pipe_names[i].client_pipe, pname))
break;
}
if(pipe_names[i].client_pipe == NULL)
return False;
if((abstract->version != pipe_names[i].abstr_syntax.version) ||
(memcmp(&abstract->uuid, &pipe_names[i].abstr_syntax.uuid,
sizeof(RPC_UUID)) != 0))
return False;
if((transfer->version != pipe_names[i].trans_syntax.version) ||
(memcmp(&transfer->uuid, &pipe_names[i].trans_syntax.uuid,
sizeof(RPC_UUID)) != 0))
return False;
return True;
}
BOOL api_pipe_bind_req(pipes_struct *p, prs_struct *rpc_in_p)
{
RPC_HDR_BA hdr_ba;
RPC_HDR_RB hdr_rb;
RPC_HDR_AUTH auth_info;
uint16 assoc_gid;
fstring ack_pipe_name;
prs_struct out_hdr_ba;
prs_struct out_auth;
prs_struct outgoing_rpc;
int i = 0;
int auth_len = 0;
enum RPC_PKT_TYPE reply_pkt_type;
p->ntlmssp_auth_requested = False;
DEBUG(5,("api_pipe_bind_req: decode request. %d\n", __LINE__));
for (i = 0; api_fd_commands[i].pipe_clnt_name; i++) {
if (strequal(api_fd_commands[i].pipe_clnt_name, p->name) &&
api_fd_commands[i].fn != NULL) {
DEBUG(3,("api_pipe_bind_req: \\PIPE\\%s -> \\PIPE\\%s\n",
api_fd_commands[i].pipe_clnt_name,
api_fd_commands[i].pipe_srv_name));
fstrcpy(p->pipe_srv_name, api_fd_commands[i].pipe_srv_name);
break;
}
}
if (api_fd_commands[i].fn == NULL) {
DEBUG(3,("api_pipe_bind_req: Unknown pipe name %s in bind request.\n",
p->name ));
if(!setup_bind_nak(p))
return False;
return True;
}
if(!smb_io_rpc_hdr_rb("", &hdr_rb, rpc_in_p, 0)) {
DEBUG(0,("api_pipe_bind_req: unable to unmarshall RPC_HDR_RB struct.\n"));
return False;
}
if (p->hdr.auth_len != 0) {
RPC_AUTH_VERIFIER auth_verifier;
RPC_AUTH_NTLMSSP_NEG ntlmssp_neg;
if(!smb_io_rpc_hdr_auth("", &auth_info, rpc_in_p, 0)) {
DEBUG(0,("api_pipe_bind_req: unable to unmarshall RPC_HDR_AUTH struct.\n"));
return False;
}
if(auth_info.auth_type != NTLMSSP_AUTH_TYPE) {
DEBUG(0,("api_pipe_bind_req: unknown auth type %x requested.\n",
auth_info.auth_type ));
return False;
}
if(!smb_io_rpc_auth_verifier("", &auth_verifier, rpc_in_p, 0)) {
DEBUG(0,("api_pipe_bind_req: unable to unmarshall RPC_HDR_AUTH struct.\n"));
return False;
}
if(!strequal(auth_verifier.signature, "NTLMSSP")) {
DEBUG(0,("api_pipe_bind_req: auth_verifier.signature != NTLMSSP\n"));
return False;
}
if(auth_verifier.msg_type != NTLMSSP_NEGOTIATE) {
DEBUG(0,("api_pipe_bind_req: auth_verifier.msg_type (%d) != NTLMSSP_NEGOTIATE\n",
auth_verifier.msg_type));
return False;
}
if(!smb_io_rpc_auth_ntlmssp_neg("", &ntlmssp_neg, rpc_in_p, 0)) {
DEBUG(0,("api_pipe_bind_req: Failed to unmarshall RPC_AUTH_NTLMSSP_NEG.\n"));
return False;
}
p->ntlmssp_chal_flags = SMBD_NTLMSSP_NEG_FLAGS;
p->ntlmssp_auth_requested = True;
}
switch(p->hdr.pkt_type) {
case RPC_BIND:
fstrcpy(ack_pipe_name, "\\PIPE\\");
fstrcat(ack_pipe_name, p->pipe_srv_name);
reply_pkt_type = RPC_BINDACK;
break;
case RPC_ALTCONT:
fstrcpy(ack_pipe_name,"");
reply_pkt_type = RPC_ALTCONTRESP;
break;
default:
return False;
}
DEBUG(5,("api_pipe_bind_req: make response. %d\n", __LINE__));
prs_init( &outgoing_rpc, 0, p->mem_ctx, MARSHALL);
prs_give_memory( &outgoing_rpc, (char *)p->out_data.current_pdu, sizeof(p->out_data.current_pdu), False);
if(!prs_init(&out_hdr_ba, 1024, p->mem_ctx, MARSHALL)) {
DEBUG(0,("api_pipe_bind_req: malloc out_hdr_ba failed.\n"));
prs_mem_free(&outgoing_rpc);
return False;
}
if(!prs_init(&out_auth, 1024, p->mem_ctx, MARSHALL)) {
DEBUG(0,("pi_pipe_bind_req: malloc out_auth failed.\n"));
prs_mem_free(&outgoing_rpc);
prs_mem_free(&out_hdr_ba);
return False;
}
if (p->ntlmssp_auth_requested)
assoc_gid = 0x7a77;
else
assoc_gid = hdr_rb.bba.assoc_gid ? hdr_rb.bba.assoc_gid : 0x53f0;
if(check_bind_req(p->name, &hdr_rb.abstract, &hdr_rb.transfer)) {
init_rpc_hdr_ba(&hdr_ba,
MAX_PDU_FRAG_LEN,
MAX_PDU_FRAG_LEN,
assoc_gid,
ack_pipe_name,
0x1, 0x0, 0x0,
&hdr_rb.transfer);
} else {
RPC_IFACE null_interface;
ZERO_STRUCT(null_interface);
init_rpc_hdr_ba(&hdr_ba, MAX_PDU_FRAG_LEN,
MAX_PDU_FRAG_LEN, assoc_gid,
ack_pipe_name, 0x1, 0x2, 0x1,
&null_interface);
}
if(!smb_io_rpc_hdr_ba("", &hdr_ba, &out_hdr_ba, 0)) {
DEBUG(0,("api_pipe_bind_req: marshalling of RPC_HDR_BA failed.\n"));
goto err_exit;
}
if (p->ntlmssp_auth_requested) {
RPC_AUTH_VERIFIER auth_verifier;
RPC_AUTH_NTLMSSP_CHAL ntlmssp_chal;
generate_random_buffer(p->challenge, 8, False);
init_rpc_hdr_auth(&auth_info, NTLMSSP_AUTH_TYPE, NTLMSSP_AUTH_LEVEL, RPC_HDR_AUTH_LEN, 1);
if(!smb_io_rpc_hdr_auth("", &auth_info, &out_auth, 0)) {
DEBUG(0,("api_pipe_bind_req: marshalling of RPC_HDR_AUTH failed.\n"));
goto err_exit;
}
init_rpc_auth_verifier(&auth_verifier, "NTLMSSP", NTLMSSP_CHALLENGE);
if(!smb_io_rpc_auth_verifier("", &auth_verifier, &out_auth, 0)) {
DEBUG(0,("api_pipe_bind_req: marshalling of RPC_AUTH_VERIFIER failed.\n"));
goto err_exit;
}
init_rpc_auth_ntlmssp_chal(&ntlmssp_chal, p->ntlmssp_chal_flags, p->challenge);
if(!smb_io_rpc_auth_ntlmssp_chal("", &ntlmssp_chal, &out_auth, 0)) {
DEBUG(0,("api_pipe_bind_req: marshalling of RPC_AUTH_NTLMSSP_CHAL failed.\n"));
goto err_exit;
}
auth_len = prs_offset(&out_auth) - RPC_HDR_AUTH_LEN;
}
init_rpc_hdr(&p->hdr, reply_pkt_type, RPC_FLG_FIRST | RPC_FLG_LAST,
p->hdr.call_id,
RPC_HEADER_LEN + prs_offset(&out_hdr_ba) + prs_offset(&out_auth),
auth_len);
if(!smb_io_rpc_hdr("", &p->hdr, &outgoing_rpc, 0)) {
DEBUG(0,("pi_pipe_bind_req: marshalling of RPC_HDR failed.\n"));
goto err_exit;
}
if(!prs_append_prs_data( &outgoing_rpc, &out_hdr_ba)) {
DEBUG(0,("api_pipe_bind_req: append of RPC_HDR_BA failed.\n"));
goto err_exit;
}
if(p->ntlmssp_auth_requested && !prs_append_prs_data( &outgoing_rpc, &out_auth)) {
DEBUG(0,("api_pipe_bind_req: append of auth info failed.\n"));
goto err_exit;
}
if(!p->ntlmssp_auth_requested)
p->pipe_bound = True;
p->out_data.data_sent_length = 0;
p->out_data.current_pdu_len = prs_offset(&outgoing_rpc);
p->out_data.current_pdu_sent = 0;
prs_mem_free(&out_hdr_ba);
prs_mem_free(&out_auth);
return True;
err_exit:
prs_mem_free(&outgoing_rpc);
prs_mem_free(&out_hdr_ba);
prs_mem_free(&out_auth);
return False;
}
BOOL api_pipe_auth_process(pipes_struct *p, prs_struct *rpc_in)
{
BOOL auth_verify = ((p->ntlmssp_chal_flags & NTLMSSP_NEGOTIATE_SIGN) != 0);
BOOL auth_seal = ((p->ntlmssp_chal_flags & NTLMSSP_NEGOTIATE_SEAL) != 0);
int data_len;
int auth_len;
uint32 old_offset;
uint32 crc32 = 0;
auth_len = p->hdr.auth_len;
if ((auth_len != RPC_AUTH_NTLMSSP_CHK_LEN) && auth_verify) {
DEBUG(0,("api_pipe_auth_process: Incorrect auth_len %d.\n", auth_len ));
return False;
}
data_len = p->hdr.frag_len - RPC_HEADER_LEN - RPC_HDR_REQ_LEN -
(auth_verify ? RPC_HDR_AUTH_LEN : 0) - auth_len;
DEBUG(5,("api_pipe_auth_process: sign: %s seal: %s data %d auth %d\n",
BOOLSTR(auth_verify), BOOLSTR(auth_seal), data_len, auth_len));
if (auth_seal) {
char *data = prs_data_p(rpc_in) + RPC_HDR_REQ_LEN;
NTLMSSPcalc_p(p, (uchar*)data, data_len);
crc32 = crc32_calc_buffer(data, data_len);
}
old_offset = prs_offset(rpc_in);
if (auth_seal || auth_verify) {
RPC_HDR_AUTH auth_info;
if(!prs_set_offset(rpc_in, old_offset + data_len)) {
DEBUG(0,("api_pipe_auth_process: cannot move offset to %u.\n",
(unsigned int)old_offset + data_len ));
return False;
}
if(!smb_io_rpc_hdr_auth("hdr_auth", &auth_info, rpc_in, 0)) {
DEBUG(0,("api_pipe_auth_process: failed to unmarshall RPC_HDR_AUTH.\n"));
return False;
}
}
if (auth_verify) {
RPC_AUTH_NTLMSSP_CHK ntlmssp_chk;
char *req_data = prs_data_p(rpc_in) + prs_offset(rpc_in) + 4;
DEBUG(5,("api_pipe_auth_process: auth %d\n", prs_offset(rpc_in) + 4));
if(prs_mem_get(rpc_in, RPC_AUTH_NTLMSSP_CHK_LEN - 4) == NULL) {
DEBUG(0,("api_pipe_auth_process: missing %d bytes in buffer.\n",
RPC_AUTH_NTLMSSP_CHK_LEN - 4 ));
return False;
}
NTLMSSPcalc_p(p, (uchar*)req_data, RPC_AUTH_NTLMSSP_CHK_LEN - 4);
if(!smb_io_rpc_auth_ntlmssp_chk("auth_sign", &ntlmssp_chk, rpc_in, 0)) {
DEBUG(0,("api_pipe_auth_process: failed to unmarshall RPC_AUTH_NTLMSSP_CHK.\n"));
return False;
}
if (!rpc_auth_ntlmssp_chk(&ntlmssp_chk, crc32, p->ntlmssp_seq_num)) {
DEBUG(0,("api_pipe_auth_process: NTLMSSP check failed.\n"));
return False;
}
}
if(!prs_set_offset(rpc_in, old_offset)) {
DEBUG(0,("api_pipe_auth_process: failed to set offset back to %u\n",
(unsigned int)old_offset ));
return False;
}
return True;
}
struct current_user *get_current_user(struct current_user *user, pipes_struct *p)
{
if (p->ntlmssp_auth_validated) {
memcpy(user, &p->pipe_user, sizeof(struct current_user));
} else {
extern struct current_user current_user;
memcpy(user, ¤t_user, sizeof(struct current_user));
}
return user;
}
BOOL api_pipe_request(pipes_struct *p)
{
int i = 0;
BOOL ret = False;
if (p->ntlmssp_auth_validated) {
if(!become_authenticated_pipe_user(p)) {
prs_mem_free(&p->out_data.rdata);
return False;
}
}
for (i = 0; api_fd_commands[i].pipe_clnt_name; i++) {
if (strequal(api_fd_commands[i].pipe_clnt_name, p->name) &&
api_fd_commands[i].fn != NULL) {
DEBUG(3,("Doing \\PIPE\\%s\n", api_fd_commands[i].pipe_clnt_name));
set_current_rpc_talloc(p->mem_ctx);
ret = api_fd_commands[i].fn(p);
set_current_rpc_talloc(NULL);
}
}
if (p->ntlmssp_auth_validated)
unbecome_authenticated_pipe_user();
return ret;
}
BOOL api_rpcTNP(pipes_struct *p, char *rpc_name,
struct api_struct *api_rpc_cmds)
{
int fn_num;
fstring name;
uint32 offset1, offset2;
DEBUG(4,("api_rpcTNP: %s op 0x%x - ", rpc_name, p->hdr_req.opnum));
slprintf(name, sizeof(name)-1, "in_%s", rpc_name);
prs_dump(name, p->hdr_req.opnum, &p->in_data.data);
for (fn_num = 0; api_rpc_cmds[fn_num].name; fn_num++) {
if (api_rpc_cmds[fn_num].opnum == p->hdr_req.opnum && api_rpc_cmds[fn_num].fn != NULL) {
DEBUG(3,("api_rpcTNP: pipe %u rpc command: %s\n", (unsigned int)p->pnum, api_rpc_cmds[fn_num].name));
break;
}
}
if (api_rpc_cmds[fn_num].name == NULL) {
DEBUG(4, ("unknown\n"));
setup_fault_pdu(p, NT_STATUS(0x1c010002));
return True;
}
offset1 = prs_offset(&p->out_data.rdata);
if(!api_rpc_cmds[fn_num].fn(p)) {
DEBUG(0,("api_rpcTNP: %s: %s failed.\n", rpc_name, api_rpc_cmds[fn_num].name));
prs_mem_free(&p->out_data.rdata);
return False;
}
if (p->bad_handle_fault_state) {
DEBUG(4,("api_rpcTNP: bad handle fault return.\n"));
p->bad_handle_fault_state = False;
setup_fault_pdu(p, NT_STATUS(0x1C00001A));
return True;
}
slprintf(name, sizeof(name)-1, "out_%s", rpc_name);
offset2 = prs_offset(&p->out_data.rdata);
prs_set_offset(&p->out_data.rdata, offset1);
prs_dump(name, p->hdr_req.opnum, &p->out_data.rdata);
prs_set_offset(&p->out_data.rdata, offset2);
DEBUG(5,("api_rpcTNP: called %s successfully\n", rpc_name));
if ((DEBUGLEVEL >= 10) &&
(p->in_data.data.data_offset != p->in_data.data.buffer_size)) {
int data_len = p->in_data.data.buffer_size -
p->in_data.data.data_offset;
char *data;
data = malloc(data_len);
DEBUG(10, ("api_rpcTNP: rpc input buffer underflow (parse error?)\n"));
if (data) {
prs_uint8s(False, "", &p->in_data.data, 0, (unsigned char *)data,
data_len);
SAFE_FREE(data);
}
}
return True;
}