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authorAndrew Tridgell <tridge@samba.org>1999-12-13 13:27:58 +0000
committerAndrew Tridgell <tridge@samba.org>1999-12-13 13:27:58 +0000
commit3db52feb1f3b2c07ce0b06ad4a7099fa6efe3fc7 (patch)
tree866dd15416c3d8554bb207709f433a87ad0c012d /source3/rpc_server/srv_pipe.c
parentf6276724bafdb6145c0c7b565172d80cb04516ea (diff)
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first pass at updating head branch to be to be the same as the SAMBA_2_0 branch
(This used to be commit 453a822a76780063dff23526c35408866d0c0154)
Diffstat (limited to 'source3/rpc_server/srv_pipe.c')
-rw-r--r--source3/rpc_server/srv_pipe.c1510
1 files changed, 750 insertions, 760 deletions
diff --git a/source3/rpc_server/srv_pipe.c b/source3/rpc_server/srv_pipe.c
index d15cc1248c..236558ba70 100644
--- a/source3/rpc_server/srv_pipe.c
+++ b/source3/rpc_server/srv_pipe.c
@@ -1,4 +1,3 @@
-
/*
* Unix SMB/Netbios implementation.
* Version 1.9.
@@ -6,6 +5,7 @@
* Copyright (C) Andrew Tridgell 1992-1998
* Copyright (C) Luke Kenneth Casson Leighton 1996-1998,
* Copyright (C) Paul Ashton 1997-1998.
+ * Copyright (C) Jeremy Allison 1999.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
@@ -43,15 +43,14 @@
extern int DEBUGLEVEL;
-static void NTLMSSPcalc_p( rpcsrv_struct *p, unsigned char *data, int len)
+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++)
- {
+ for( ind = 0; ind < len; ind++) {
unsigned char tc;
unsigned char t;
@@ -71,250 +70,332 @@ static void NTLMSSPcalc_p( rpcsrv_struct *p, unsigned char *data, int len)
}
/*******************************************************************
- frees all temporary data used in construction of pdu
+ Generate the next PDU to be returned from the data in p->rdata.
+ We cheat here as this function doesn't handle the special auth
+ footers of the authenticated bind response reply.
********************************************************************/
-void rpcsrv_free_temp(rpcsrv_struct *l)
+
+BOOL create_next_pdu(pipes_struct *p)
{
- mem_free_data(l->rhdr .data);
- mem_free_data(l->rfault .data);
- mem_free_data(l->rdata_i.data);
- mem_free_data(l->rauth .data);
- mem_free_data(l->rverf .data);
- mem_free_data(l->rntlm .data);
-}
+ RPC_HDR_RESP hdr_resp;
+ BOOL auth_verify = IS_BITS_SET_ALL(p->ntlmssp_chal_flags, NTLMSSP_NEGOTIATE_SIGN);
+ BOOL auth_seal = IS_BITS_SET_ALL(p->ntlmssp_chal_flags, NTLMSSP_NEGOTIATE_SEAL);
+ uint32 data_len;
+ uint32 data_space_available;
+ uint32 data_len_left;
+ prs_struct outgoing_pdu;
+ char *data;
+ char *data_from;
+ uint32 data_pos;
-/*******************************************************************
- turns a DCE/RPC request into a DCE/RPC reply
+ memset((char *)&hdr_resp, '\0', sizeof(hdr_resp));
- this is where the data really should be split up into an array of
- headers and data sections.
+ /* Change the incoming request header to a response. */
+ p->hdr.pkt_type = RPC_RESPONSE;
- ********************************************************************/
-BOOL create_rpc_reply(rpcsrv_struct *l, uint32 data_start)
-{
- char *data;
- BOOL auth_verify = IS_BITS_SET_ALL(l->ntlmssp_chal.neg_flags, NTLMSSP_NEGOTIATE_SIGN);
- BOOL auth_seal = IS_BITS_SET_ALL(l->ntlmssp_chal.neg_flags, NTLMSSP_NEGOTIATE_SEAL);
- uint32 data_len;
- uint32 auth_len;
- uint32 data_end = l->rdata.offset + (l->ntlmssp_auth ? (8 + 16) : 0);
+ /* Set up rpc header flags. */
+ if (p->data_sent_length == 0)
+ p->hdr.flags = RPC_FLG_FIRST;
+ else
+ p->hdr.flags = 0;
- DEBUG(5,("create_rpc_reply: data_start: %d data_end: %d max_tsize: %d\n",
- data_start, data_end, l->hdr_ba.bba.max_tsize));
+ /*
+ * Work out how much we can fit in a sigle PDU.
+ */
- auth_len = l->hdr.auth_len;
+ data_space_available = sizeof(p->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);
- if (l->ntlmssp_auth)
- {
- DEBUG(10,("create_rpc_reply: auth\n"));
- if (auth_len != 16)
- {
- return False;
- }
- }
+ /*
+ * The amount we send is the minimum of the available
+ * space and the amount left to send.
+ */
- prs_init(&l->rhdr , 0x18, 4, 0, False);
- prs_init(&l->rauth, 1024, 4, 0, False);
- prs_init(&l->rverf, 0x10, 4, 0, False);
+ data_len_left = prs_offset(&p->rdata) - p->data_sent_length;
- l->hdr.pkt_type = RPC_RESPONSE; /* mark header as an rpc response */
+ /*
+ * Ensure there really is data left to send.
+ */
- /* set up rpc header (fragmentation issues) */
- if (data_start == 0)
- {
- l->hdr.flags = RPC_FLG_FIRST;
- }
- else
- {
- l->hdr.flags = 0;
+ if(!data_len_left) {
+ DEBUG(0,("create_next_pdu: no data left to send !\n"));
+ return False;
}
- l->hdr_resp.alloc_hint = data_end - data_start; /* calculate remaining data to be sent */
+ data_len = MIN(data_len_left, data_space_available);
- if (l->hdr_resp.alloc_hint + 0x18 <= l->hdr_ba.bba.max_tsize)
- {
- l->hdr.flags |= RPC_FLG_LAST;
- l->hdr.frag_len = l->hdr_resp.alloc_hint + 0x18;
- }
- else
- {
- l->hdr.frag_len = l->hdr_ba.bba.max_tsize;
- }
+ /*
+ * Set up the alloc hint. This should be the data left to
+ * send.
+ */
- if (l->ntlmssp_auth)
- {
- l->hdr_resp.alloc_hint -= auth_len + 8;
+ hdr_resp.alloc_hint = data_len_left;
+
+ /*
+ * Set up the header lengths.
+ */
+
+ 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 (l->ntlmssp_auth)
- {
- data_len = l->hdr.frag_len - auth_len - (auth_verify ? 8 : 0) - 0x18;
+ /*
+ * Work out if this PDU will be the last.
+ */
+
+ if(p->data_sent_length + data_len >= prs_offset(&p->rdata))
+ p->hdr.flags |= RPC_FLG_LAST;
+
+ /*
+ * Init the parse struct to point at the outgoing
+ * data.
+ */
+
+ prs_init( &outgoing_pdu, 0, 4, MARSHALL);
+ prs_give_memory( &outgoing_pdu, (char *)p->current_pdu, sizeof(p->current_pdu), False);
+
+ /* Store the header in the data stream. */
+ if(!smb_io_rpc_hdr("hdr", &p->hdr, &outgoing_pdu, 0)) {
+ DEBUG(0,("create_next_pdu: failed to marshall RPC_HDR.\n"));
+ return False;
}
- else
- {
- data_len = l->hdr.frag_len - 0x18;
+
+ if(!smb_io_rpc_hdr_resp("resp", &hdr_resp, &outgoing_pdu, 0)) {
+ DEBUG(0,("create_next_pdu: failed to marshall RPC_HDR_RESP.\n"));
+ return False;
}
- l->rhdr.data->offset.start = 0;
- l->rhdr.data->offset.end = 0x18;
+ /* Store the current offset. */
+ data_pos = prs_offset(&outgoing_pdu);
- /* store the header in the data stream */
- smb_io_rpc_hdr ("hdr" , &(l->hdr ), &(l->rhdr), 0);
- smb_io_rpc_hdr_resp("resp", &(l->hdr_resp), &(l->rhdr), 0);
+ /* Copy the data into the PDU. */
+ data_from = prs_data_p(&p->rdata) + p->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));
+ return False;
+ }
- /* don't use rdata: use rdata_i instead, which moves... */
- /* make a pointer to the rdata data, NOT A COPY */
+ /*
+ * Set data to point to where we copied the data into.
+ */
- l->rdata_i.data = NULL;
- prs_init(&l->rdata_i, 0, l->rdata.align, l->rdata.data->margin, l->rdata.io);
- data = mem_data(&(l->rdata.data), data_start);
- mem_create(l->rdata_i.data, data, 0, data_len, 0, False);
- l->rdata_i.offset = data_len;
+ data = prs_data_p(&outgoing_pdu) + data_pos;
- if (auth_len > 0)
- {
+ if (p->hdr.auth_len > 0) {
uint32 crc32 = 0;
- DEBUG(5,("create_rpc_reply: sign: %s seal: %s data %d auth %d\n",
- BOOLSTR(auth_verify), BOOLSTR(auth_seal), data_len, auth_len));
+ 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_len, data);
- NTLMSSPcalc_p(l, (uchar*)data, data_len);
+ if (auth_seal) {
+ crc32 = crc32_calc_buffer(data, data_len);
+ NTLMSSPcalc_p(p, (uchar*)data, data_len);
}
- if (auth_seal || auth_verify)
- {
- make_rpc_hdr_auth(&l->auth_info, 0x0a, 0x06, 0x08, (auth_verify ? 1 : 0));
- smb_io_rpc_hdr_auth("hdr_auth", &l->auth_info, &l->rauth, 0);
+ 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"));
+ return False;
+ }
}
- if (auth_verify)
- {
- char *auth_data;
- l->ntlmssp_seq_num++;
- make_rpc_auth_ntlmssp_chk(&l->ntlmssp_chk, NTLMSSP_SIGN_VERSION, crc32, l->ntlmssp_seq_num++);
- smb_io_rpc_auth_ntlmssp_chk("auth_sign", &(l->ntlmssp_chk), &l->rverf, 0);
- auth_data = mem_data(&l->rverf.data, 4);
- NTLMSSPcalc_p(l, (uchar*)auth_data, 12);
+ 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"));
+ return False;
+ }
+ NTLMSSPcalc_p(p, (uchar*)auth_data, RPC_AUTH_NTLMSSP_CHK_LEN - 4);
}
}
- /* set up the data chain */
- if (l->ntlmssp_auth)
- {
- prs_link(NULL , &l->rhdr , &l->rdata_i);
- prs_link(&l->rhdr , &l->rdata_i, &l->rauth );
- prs_link(&l->rdata_i, &l->rauth , &l->rverf );
- prs_link(&l->rauth , &l->rverf , NULL );
- }
- else
- {
- prs_link(NULL , &l->rhdr , &l->rdata_i);
- prs_link(&l->rhdr, &l->rdata_i, NULL );
- }
+ /*
+ * Setup the counts for this PDU.
+ */
- return l->rhdr.data != NULL && l->rhdr.offset == 0x18;
+ p->data_sent_length += data_len;
+ p->current_pdu_len = p->hdr.frag_len;
+ p->current_pdu_sent = 0;
+
+ return True;
}
-static BOOL api_pipe_ntlmssp_verify(rpcsrv_struct *l)
+/*******************************************************************
+ Process an NTLMSSP authentication response.
+ If this function succeeds, the user has been authenticated
+ and their domain, name and calling workstation stored in
+ the pipe struct.
+ The initial challenge is stored in p->challenge.
+ *******************************************************************/
+
+static BOOL api_pipe_ntlmssp_verify(pipes_struct *p, RPC_AUTH_NTLMSSP_RESP *ntlmssp_resp)
{
- uchar *pwd = NULL;
- uchar null_pwd[16];
uchar lm_owf[24];
- uchar nt_owf[128];
- size_t lm_owf_len;
- size_t nt_owf_len;
- size_t usr_len;
- size_t dom_len;
- size_t wks_len;
- BOOL anonymous = False;
+ uchar nt_owf[24];
+ fstring user_name;
+ fstring unix_user_name;
+ fstring domain;
+ fstring wks;
+ BOOL guest_user = False;
+ struct smb_passwd *smb_pass = NULL;
+ struct passwd *pass = NULL;
+ uchar null_smb_passwd[16];
+ uchar *smb_passwd_ptr = NULL;
+
+ DEBUG(5,("api_pipe_ntlmssp_verify: checking user details\n"));
- memset(null_pwd, 0, sizeof(null_pwd));
+ memset(p->user_name, '\0', sizeof(p->user_name));
+ memset(p->unix_user_name, '\0', sizeof(p->unix_user_name));
+ memset(p->domain, '\0', sizeof(p->domain));
+ memset(p->wks, '\0', sizeof(p->wks));
- DEBUG(5,("api_pipe_ntlmssp_verify: checking user details\n"));
+ /*
+ * Setup an empty password for a guest user.
+ */
- lm_owf_len = l->ntlmssp_resp.hdr_lm_resp.str_str_len;
- nt_owf_len = l->ntlmssp_resp.hdr_nt_resp.str_str_len;
- usr_len = l->ntlmssp_resp.hdr_usr .str_str_len;
- dom_len = l->ntlmssp_resp.hdr_domain .str_str_len;
- wks_len = l->ntlmssp_resp.hdr_wks .str_str_len;
+ memset(null_smb_passwd,0,16);
- if (lm_owf_len == 0 && nt_owf_len == 0 &&
- usr_len == 0 && dom_len == 0 && wks_len == 0)
- {
- anonymous = True;
- }
- else
- {
- if (lm_owf_len == 0) return False;
- if (nt_owf_len == 0) return False;
- if (l->ntlmssp_resp.hdr_usr .str_str_len == 0) return False;
- if (l->ntlmssp_resp.hdr_domain .str_str_len == 0) return False;
- if (l->ntlmssp_resp.hdr_wks .str_str_len == 0) return False;
+ /*
+ * We always negotiate UNICODE.
+ */
+
+ if (IS_BITS_SET_ALL(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);
}
- if (lm_owf_len > sizeof(lm_owf)) return False;
- if (nt_owf_len > sizeof(nt_owf)) return False;
+ DEBUG(5,("user: %s domain: %s wks: %s\n", user_name, domain, wks));
- memcpy(lm_owf, l->ntlmssp_resp.lm_resp, sizeof(lm_owf));
- memcpy(nt_owf, l->ntlmssp_resp.nt_resp, sizeof(nt_owf));
+ 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, lm_owf, sizeof(lm_owf));
- dump_data(100, nt_owf, sizeof(nt_owf));
- dump_data(100, l->ntlmssp_chal.challenge, 8);
+ 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
- memset(l->user_name, 0, sizeof(l->user_name));
- memset(l->domain , 0, sizeof(l->domain ));
- memset(l->wks , 0, sizeof(l->wks ));
+ /*
+ * Allow guest access. Patch from Shirish Kalele <kalele@veritas.com>.
+ */
+
+ if((strlen(user_name) == 0) && (ntlmssp_resp->hdr_lm_resp.str_str_len==0) &&
+ (ntlmssp_resp->hdr_nt_resp.str_str_len==0)) {
+
+ guest_user = True;
+
+ fstrcpy(unix_user_name, lp_guestaccount(-1));
+ DEBUG(100,("Null user in NTLMSSP verification. Using guest = %s\n", unix_user_name));
+
+ smb_passwd_ptr = null_smb_passwd;
+
+ } else {
+
+ /*
+ * Pass the user through the NT -> unix user mapping
+ * function.
+ */
+
+ fstrcpy(unix_user_name, user_name);
+ (void)map_username(unix_user_name);
+
+ /*
+ * Do the length checking only if user is not NULL.
+ */
+
+ 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 (IS_BITS_SET_ALL(l->ntlmssp_chal.neg_flags, NTLMSSP_NEGOTIATE_UNICODE))
- {
- unibuf_to_ascii(l->user_name, l->ntlmssp_resp.user,
- MIN(l->ntlmssp_resp.hdr_usr .str_str_len/2,
- sizeof(l->user_name)-1));
- unibuf_to_ascii(l->domain , l->ntlmssp_resp.domain,
- MIN(l->ntlmssp_resp.hdr_domain.str_str_len/2,
- sizeof(l->domain )-1));
- unibuf_to_ascii(l->wks , l->ntlmssp_resp.wks,
- MIN(l->ntlmssp_resp.hdr_wks .str_str_len/2,
- sizeof(l->wks )-1));
- }
- else
- {
- fstrcpy(l->user_name, l->ntlmssp_resp.user );
- fstrcpy(l->domain , l->ntlmssp_resp.domain);
- fstrcpy(l->wks , l->ntlmssp_resp.wks );
}
+ /*
+ * Find the user in the unix password db.
+ */
- if (anonymous)
- {
- DEBUG(5,("anonymous user session\n"));
- mdfour(l->user_sess_key, null_pwd, 16);
- pwd = null_pwd;
- l->ntlmssp_validated = True;
+ if(!(pass = Get_Pwnam(unix_user_name,True))) {
+ DEBUG(1,("Couldn't find user '%s' in UNIX password database.\n",unix_user_name));
+ return(False);
}
- else
- {
- DEBUG(5,("user: %s domain: %s wks: %s\n", l->user_name, l->domain, l->wks));
- become_root(False);
- l->ntlmssp_validated = check_domain_security(l->user_name, l->domain,
- (uchar*)l->ntlmssp_chal.challenge,
- lm_owf, lm_owf_len,
- nt_owf, nt_owf_len,
- l->user_sess_key);
- unbecome_root(False);
+
+ if(!guest_user) {
+
+ become_root(True);
+
+ if(!(p->ntlmssp_auth_validated = pass_check_smb(unix_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, unix_user_name, wks, p->name ));
+ unbecome_root(True);
+ return False;
+ }
+
+ if(!(smb_pass = getsmbpwnam(unix_user_name))) {
+ DEBUG(1,("api_pipe_ntlmssp_verify: Cannot find user %s in smb passwd database.\n",
+ unix_user_name));
+ unbecome_root(True);
+ return False;
+ }
+
+ unbecome_root(True);
+
+ if (smb_pass == NULL) {
+ DEBUG(1,("api_pipe_ntlmssp_verify: Couldn't find user '%s' in smb_passwd file.\n",
+ unix_user_name));
+ return(False);
+ }
+
+ /* Quit if the account was disabled. */
+ if((smb_pass->acct_ctrl & ACB_DISABLED) || !smb_pass->smb_passwd) {
+ DEBUG(1,("Account for user '%s' was disabled.\n", unix_user_name));
+ return(False);
+ }
+
+ if(!smb_pass->smb_nt_passwd) {
+ DEBUG(1,("Account for user '%s' has no NT password hash.\n", unix_user_name));
+ return(False);
+ }
+
+ smb_passwd_ptr = smb_pass->smb_passwd;
}
- if (l->ntlmssp_validated && pwd != NULL)
+ /*
+ * Set up the sign/seal data.
+ */
+
{
uchar p24[24];
- NTLMSSPOWFencrypt(pwd, lm_owf, p24);
+ NTLMSSPOWFencrypt(smb_passwd_ptr, lm_owf, p24);
{
unsigned char j = 0;
int ind;
@@ -327,761 +408,670 @@ static BOOL api_pipe_ntlmssp_verify(rpcsrv_struct *l)
k2[7] = 0xb0;
for (ind = 0; ind < 256; ind++)
- {
- l->ntlmssp_hash[ind] = (unsigned char)ind;
- }
+ p->ntlmssp_hash[ind] = (unsigned char)ind;
- for( ind = 0; ind < 256; ind++)
- {
+ for( ind = 0; ind < 256; ind++) {
unsigned char tc;
- j += (l->ntlmssp_hash[ind] + k2[ind%8]);
+ j += (p->ntlmssp_hash[ind] + k2[ind%8]);
- tc = l->ntlmssp_hash[ind];
- l->ntlmssp_hash[ind] = l->ntlmssp_hash[j];
- l->ntlmssp_hash[j] = tc;
+ tc = p->ntlmssp_hash[ind];
+ p->ntlmssp_hash[ind] = p->ntlmssp_hash[j];
+ p->ntlmssp_hash[j] = tc;
}
- l->ntlmssp_hash[256] = 0;
- l->ntlmssp_hash[257] = 0;
+ p->ntlmssp_hash[256] = 0;
+ p->ntlmssp_hash[257] = 0;
}
- l->ntlmssp_seq_num = 0;
- }
- else
- {
- l->ntlmssp_validated = False;
+/* NTLMSSPhash(p->ntlmssp_hash, p24); */
+ p->ntlmssp_seq_num = 0;
+
}
- return l->ntlmssp_validated;
-}
+ fstrcpy(p->user_name, user_name);
+ fstrcpy(p->unix_user_name, unix_user_name);
+ fstrcpy(p->domain, domain);
+ fstrcpy(p->wks, wks);
-static BOOL api_pipe_ntlmssp(rpcsrv_struct *l, prs_struct *pd)
-{
- /* receive a negotiate; send a challenge; receive a response */
- switch (l->auth_verifier.msg_type)
- {
- case NTLMSSP_NEGOTIATE:
- {
- smb_io_rpc_auth_ntlmssp_neg("", &l->ntlmssp_neg, pd, 0);
- break;
- }
- case NTLMSSP_AUTH:
- {
- smb_io_rpc_auth_ntlmssp_resp("", &l->ntlmssp_resp, pd, 0);
- if (!api_pipe_ntlmssp_verify(l))
- {
- pd->offset = 0;
- }
- break;
- }
- default:
- {
- /* NTLMSSP expected: unexpected message type */
- DEBUG(3,("unexpected message type in NTLMSSP %d\n",
- l->auth_verifier.msg_type));
- return False;
- }
- }
+ /*
+ * Store the UNIX credential data (uid/gid pair) in the pipe structure.
+ */
+
+ p->uid = pass->pw_uid;
+ p->gid = pass->pw_gid;
- return (pd->offset != 0);
+ p->ntlmssp_auth_validated = True;
+ return True;
}
+/*******************************************************************
+ The switch table for the pipe names and the functions to handle them.
+ *******************************************************************/
+
struct api_cmd
{
char * pipe_clnt_name;
char * pipe_srv_name;
- BOOL (*fn) (rpcsrv_struct *, prs_struct *);
+ BOOL (*fn) (pipes_struct *, prs_struct *);
};
-static struct api_cmd **api_fd_commands = NULL;
-uint32 num_cmds = 0;
-
-static void api_cmd_free(struct api_cmd *item)
-{
- if (item != NULL)
- {
- if (item->pipe_clnt_name != NULL)
- {
- free(item->pipe_clnt_name);
- }
- if (item->pipe_srv_name != NULL)
- {
- free(item->pipe_srv_name);
- }
- free(item);
- }
-}
-
-static struct api_cmd *api_cmd_dup(const struct api_cmd *from)
+static struct api_cmd api_fd_commands[] =
{
- struct api_cmd *copy = NULL;
- if (from == NULL)
- {
- return NULL;
- }
- copy = (struct api_cmd *) malloc(sizeof(struct api_cmd));
- if (copy != NULL)
- {
- ZERO_STRUCTP(copy);
- if (from->pipe_clnt_name != NULL)
- {
- copy->pipe_clnt_name = strdup(from->pipe_clnt_name );
- }
- if (from->pipe_srv_name != NULL)
- {
- copy->pipe_srv_name = strdup(from->pipe_srv_name);
- }
- if (from->fn != NULL)
- {
- copy->fn = from->fn;
- }
- }
- return copy;
-}
+ { "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 },
+#if DISABLED_IN_2_0
+ { "winreg", "winreg", api_reg_rpc },
+#endif
+ { NULL, NULL, NULL }
+};
-static void free_api_cmd_array(uint32 num_entries, struct api_cmd **entries)
-{
- void(*fn)(void*) = (void(*)(void*))&api_cmd_free;
- free_void_array(num_entries, (void**)entries, *fn);
-}
+/*******************************************************************
+ This is the client reply to our challenge for an authenticated
+ bind request. The challenge we sent is in p->challenge.
+*******************************************************************/
-static struct api_cmd* add_api_cmd_to_array(uint32 *len,
- struct api_cmd ***array,
- const struct api_cmd *name)
+static BOOL api_pipe_bind_auth_resp(pipes_struct *p, prs_struct *pd)
{
- void*(*fn)(const void*) = (void*(*)(const void*))&api_cmd_dup;
- return (struct api_cmd*)add_copy_to_array(len,
- (void***)array, (const void*)name, *fn, False);
-
-}
+ 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__));
-void close_msrpc_command_processor(void)
-{
- free_api_cmd_array(num_cmds, api_fd_commands);
-}
+ if (p->hdr.auth_len == 0) {
+ DEBUG(0,("api_pipe_bind_auth_resp: No auth field sent !\n"));
+ return False;
+ }
-void add_msrpc_command_processor(char* pipe_name,
- char* process_name,
- BOOL (*fn) (rpcsrv_struct *, prs_struct *))
-{
- struct api_cmd cmd;
- cmd.pipe_clnt_name = pipe_name;
- cmd.pipe_srv_name = process_name;
- cmd.fn = fn;
+ /*
+ * Decode the authentication verifier response.
+ */
- add_api_cmd_to_array(&num_cmds, &api_fd_commands, &cmd);
-}
+ if(!smb_io_rpc_hdr_autha("", &autha_info, pd, 0)) {
+ DEBUG(0,("api_pipe_bind_auth_resp: unmarshall of RPC_HDR_AUTHA failed.\n"));
+ return False;
+ }
-static BOOL api_pipe_bind_auth_resp(rpcsrv_struct *l, prs_struct *pd)
-{
- DEBUG(5,("api_pipe_bind_auth_resp: decode request. %d\n", __LINE__));
+ 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 (l->hdr.auth_len == 0) return False;
+ if(!smb_io_rpc_auth_verifier("", &auth_verifier, pd, 0)) {
+ DEBUG(0,("api_pipe_bind_auth_resp: unmarshall of RPC_AUTH_VERIFIER failed.\n"));
+ return False;
+ }
- /* decode the authentication verifier response */
- smb_io_rpc_hdr_autha("", &l->autha_info, pd, 0);
- if (pd->offset == 0) return False;
+ /*
+ * Ensure this is a NTLMSSP_AUTH packet type.
+ */
- if (!rpc_hdr_auth_chk(&(l->auth_info))) 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;
+ }
- smb_io_rpc_auth_ntlmssp_verifier("", &l->auth_verifier, pd, 0);
- if (pd->offset == 0) return False;
+ if(!smb_io_rpc_auth_ntlmssp_resp("", &ntlmssp_resp, pd, 0)) {
+ DEBUG(0,("api_pipe_bind_auth_resp: Failed to unmarshall RPC_AUTH_NTLMSSP_RESP.\n"));
+ return False;
+ }
- if (!rpc_auth_ntlmssp_verifier_chk(&(l->auth_verifier), "NTLMSSP", NTLMSSP_AUTH)) return False;
+ /*
+ * The following call actually checks the challenge/response data.
+ * for correctness against the given DOMAIN\user name.
+ */
- return api_pipe_ntlmssp(l, pd);
+ if (!api_pipe_ntlmssp_verify(p, &ntlmssp_resp))
+ return False;
+
+ return True;
}
-static BOOL api_pipe_fault_resp(rpcsrv_struct *l, prs_struct *pd, uint32 status)
+/*******************************************************************
+ Marshall a bind_nak pdu.
+*******************************************************************/
+
+static BOOL setup_bind_nak(pipes_struct *p, prs_struct *pd)
{
- DEBUG(5,("api_pipe_fault_resp: make response\n"));
+ prs_struct outgoing_rpc;
+ RPC_HDR nak_hdr;
+ uint16 zero = 0;
+
+ /*
+ * Marshall directly into the outgoing PDU space. We
+ * must do this as we need to set to the bind response
+ * header and are never sending more than one PDU here.
+ */
- prs_init(&(l->rhdr ), 0x18, 4, 0, False);
- prs_init(&(l->rfault ), 0x8 , 4, 0, False);
+ prs_init( &outgoing_rpc, 0, 4, MARSHALL);
+ prs_give_memory( &outgoing_rpc, (char *)p->current_pdu, sizeof(p->current_pdu), False);
- /***/
- /*** set up the header, response header and fault status ***/
- /***/
- l->hdr_fault.status = status;
- l->hdr_fault.reserved = 0x0;
+ /*
+ * Initialize a bind_nak header.
+ */
- l->hdr_resp.alloc_hint = 0x0;
- l->hdr_resp.cancel_count = 0x0;
- l->hdr_resp.reserved = 0x0;
+ init_rpc_hdr(&nak_hdr, RPC_BINDNACK, RPC_FLG_FIRST | RPC_FLG_LAST,
+ p->hdr.call_id, RPC_HEADER_LEN + sizeof(uint16), 0);
- make_rpc_hdr(&l->hdr, RPC_FAULT, RPC_FLG_NOCALL | RPC_FLG_FIRST | RPC_FLG_LAST,
- l->hdr.call_id,
- 0x20,
- 0);
+ /*
+ * Marshall the header into the outgoing PDU.
+ */
- smb_io_rpc_hdr ("hdr" , &(l->hdr ), &(l->rhdr), 0);
- smb_io_rpc_hdr_resp ("resp" , &(l->hdr_resp ), &(l->rhdr), 0);
- smb_io_rpc_hdr_fault("fault", &(l->hdr_fault), &(l->rfault), 0);
- mem_realloc_data(l->rhdr.data, l->rhdr.offset);
- mem_realloc_data(l->rfault.data, l->rfault.offset);
+ if(!smb_io_rpc_hdr("", &nak_hdr, &outgoing_rpc, 0)) {
+ DEBUG(0,("setup_bind_nak: marshalling of RPC_HDR failed.\n"));
+ return False;
+ }
- /***/
- /*** link rpc header and fault together ***/
- /***/
+ /*
+ * Now add the reject reason.
+ */
- prs_link(NULL , &l->rhdr , &l->rfault);
- prs_link(&l->rhdr, &l->rfault, NULL );
+ if(!prs_uint16("reject code", &outgoing_rpc, 0, &zero))
+ return False;
+
+ p->data_sent_length = 0;
+ p->current_pdu_len = prs_offset(&outgoing_rpc);
+ p->current_pdu_sent = 0;
return True;
}
-static BOOL srv_pipe_bind_and_alt_req(rpcsrv_struct *l, prs_struct *pd,
- const char* ack_pipe_name,
- enum RPC_PKT_TYPE pkt_type)
+/*******************************************************************
+ Respond to a pipe bind request.
+*******************************************************************/
+
+static BOOL api_pipe_bind_req(pipes_struct *p, prs_struct *pd)
{
+ 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;
+
+ p->ntlmssp_auth_requested = False;
+
+ DEBUG(5,("api_pipe_bind_req: decode request. %d\n", __LINE__));
+
+ /*
+ * Try and find the correct pipe name to ensure
+ * that this is a pipe name we support.
+ */
- l->ntlmssp_auth = 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,("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, pd))
+ return False;
+ return True;
+ }
/* decode the bind request */
- smb_io_rpc_hdr_rb("", &l->hdr_rb, pd, 0);
+ if(!smb_io_rpc_hdr_rb("", &hdr_rb, pd, 0)) {
+ DEBUG(0,("api_pipe_bind_req: unable to unmarshall RPC_HDR_RB struct.\n"));
+ return False;
+ }
- if (pd->offset == 0) return False;
+ /*
+ * Check if this is an authenticated request.
+ */
- if (l->hdr.auth_len != 0)
- {
- /* decode the authentication verifier */
- smb_io_rpc_hdr_auth ("", &l->auth_info , pd, 0);
- if (pd->offset == 0) return False;
+ if (p->hdr.auth_len != 0) {
+ RPC_AUTH_VERIFIER auth_verifier;
+ RPC_AUTH_NTLMSSP_NEG ntlmssp_neg;
- l->ntlmssp_auth = l->auth_info.auth_type = 0x0a;
+ /*
+ * Decode the authentication verifier.
+ */
- if (l->ntlmssp_auth)
- {
- smb_io_rpc_auth_ntlmssp_verifier("", &l->auth_verifier, pd, 0);
- if (pd->offset == 0) return False;
+ if(!smb_io_rpc_hdr_auth("", &auth_info, pd, 0)) {
+ DEBUG(0,("api_pipe_bind_req: unable to unmarshall RPC_HDR_AUTH struct.\n"));
+ return False;
+ }
- l->ntlmssp_auth = strequal(l->auth_verifier.signature, "NTLMSSP");
+ /*
+ * We only support NTLMSSP_AUTH_TYPE requests.
+ */
+
+ 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 (l->ntlmssp_auth)
- {
- if (!api_pipe_ntlmssp(l, pd)) return False;
+ if(!smb_io_rpc_auth_verifier("", &auth_verifier, pd, 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, pd, 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;
}
+ /* name has to be \PIPE\xxxxx */
+ fstrcpy(ack_pipe_name, "\\PIPE\\");
+ fstrcat(ack_pipe_name, p->pipe_srv_name);
+
DEBUG(5,("api_pipe_bind_req: make response. %d\n", __LINE__));
- prs_init(&(l->rdata), 1024, 4, 0, False);
- prs_init(&(l->rhdr ), 0x18, 4, 0, False);
- prs_init(&(l->rauth), 1024, 4, 0, False);
- prs_init(&(l->rverf), 0x08, 4, 0, False);
- prs_init(&(l->rntlm), 1024, 4, 0, False);
+ /*
+ * Marshall directly into the outgoing PDU space. We
+ * must do this as we need to set to the bind response
+ * header and are never sending more than one PDU here.
+ */
- /***/
- /*** do the bind ack first ***/
- /***/
+ prs_init( &outgoing_rpc, 0, 4, MARSHALL);
+ prs_give_memory( &outgoing_rpc, (char *)p->current_pdu, sizeof(p->current_pdu), False);
- if (l->ntlmssp_auth)
- {
- assoc_gid = 0x7a77;
+ /*
+ * Setup the memory to marshall the ba header, and the
+ * auth footers.
+ */
+
+ if(!prs_init(&out_hdr_ba, 1024, 4, MARSHALL)) {
+ DEBUG(0,("api_pipe_bind_req: malloc out_hdr_ba failed.\n"));
+ return False;
}
- else
- {
- assoc_gid = l->hdr_rb.bba.assoc_gid;
+
+ if(!prs_init(&out_auth, 1024, 4, MARSHALL)) {
+ DEBUG(0,("pi_pipe_bind_req: malloc out_auth failed.\n"));
+ prs_mem_free(&out_hdr_ba);
+ return False;
}
- make_rpc_hdr_ba(&l->hdr_ba,
- l->hdr_rb.bba.max_tsize,
- l->hdr_rb.bba.max_rsize,
+ if (p->ntlmssp_auth_requested)
+ assoc_gid = 0x7a77;
+ else
+ assoc_gid = hdr_rb.bba.assoc_gid;
+
+ /*
+ * Create the bind response struct.
+ */
+
+ init_rpc_hdr_ba(&hdr_ba,
+ hdr_rb.bba.max_tsize,
+ hdr_rb.bba.max_rsize,
assoc_gid,
ack_pipe_name,
0x1, 0x0, 0x0,
- &(l->hdr_rb.transfer));
+ &hdr_rb.transfer);
+
+ /*
+ * and marshall it.
+ */
- smb_io_rpc_hdr_ba("", &l->hdr_ba, &l->rdata, 0);
- mem_realloc_data(l->rdata.data, l->rdata.offset);
+ 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;
+ }
- /***/
- /*** now the authentication ***/
- /***/
+ /*
+ * Now the authentication.
+ */
- if (l->ntlmssp_auth)
- {
- uint8 challenge[8];
- generate_random_buffer(challenge, 8, False);
+ if (p->ntlmssp_auth_requested) {
+ RPC_AUTH_VERIFIER auth_verifier;
+ RPC_AUTH_NTLMSSP_CHAL ntlmssp_chal;
- /*** authentication info ***/
+ generate_random_buffer(p->challenge, 8, False);
- make_rpc_hdr_auth(&l->auth_info, 0x0a, 0x06, 0, 1);
- smb_io_rpc_hdr_auth("", &l->auth_info, &l->rverf, 0);
- mem_realloc_data(l->rverf.data, l->rverf.offset);
+ /*** Authentication info ***/
+
+ 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;
+ }
/*** NTLMSSP verifier ***/
- make_rpc_auth_ntlmssp_verifier(&l->auth_verifier,
- "NTLMSSP", NTLMSSP_CHALLENGE);
- smb_io_rpc_auth_ntlmssp_verifier("", &l->auth_verifier, &l->rauth, 0);
- mem_realloc_data(l->rauth.data, l->rauth.offset);
+ 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;
+ }
/* NTLMSSP challenge ***/
- make_rpc_auth_ntlmssp_chal(&l->ntlmssp_chal,
- 0x000082b1, challenge);
- smb_io_rpc_auth_ntlmssp_chal("", &l->ntlmssp_chal, &l->rntlm, 0);
- mem_realloc_data(l->rntlm.data, l->rntlm.offset);
- }
+ 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;
+ }
- /***/
- /*** then do the header, now we know the length ***/
- /***/
+ /* Auth len in the rpc header doesn't include auth_header. */
+ auth_len = prs_offset(&out_auth) - RPC_HDR_AUTH_LEN;
+ }
- make_rpc_hdr(&l->hdr, pkt_type, RPC_FLG_FIRST | RPC_FLG_LAST,
- l->hdr.call_id,
- l->rdata.offset + l->rverf.offset + l->rauth.offset + l->rntlm.offset + 0x10,
- l->rauth.offset + l->rntlm.offset);
+ /*
+ * Create the header, now we know the length.
+ */
- smb_io_rpc_hdr("", &l->hdr, &l->rhdr, 0);
- mem_realloc_data(l->rhdr.data, l->rdata.offset);
+ init_rpc_hdr(&p->hdr, RPC_BINDACK, RPC_FLG_FIRST | RPC_FLG_LAST,
+ p->hdr.call_id,
+ RPC_HEADER_LEN + prs_offset(&out_hdr_ba) + prs_offset(&out_auth),
+ auth_len);
- /***/
- /*** link rpc header, bind acknowledgment and authentication responses ***/
- /***/
+ /*
+ * Marshall the header into the outgoing PDU.
+ */
- if (l->ntlmssp_auth)
- {
- prs_link(NULL , &l->rhdr , &l->rdata);
- prs_link(&l->rhdr , &l->rdata, &l->rverf);
- prs_link(&l->rdata, &l->rverf, &l->rauth);
- prs_link(&l->rverf, &l->rauth, &l->rntlm);
- prs_link(&l->rauth, &l->rntlm, NULL );
+ 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;
}
- else
- {
- prs_link(NULL , &l->rhdr , &l->rdata);
- prs_link(&l->rhdr, &l->rdata, NULL );
+
+ /*
+ * Now add the RPC_HDR_BA and any auth needed.
+ */
+
+ 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;
}
- return True;
-}
+ 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;
+ }
-static BOOL api_pipe_bind_and_alt_req(rpcsrv_struct *l, prs_struct *pd,
- const char* name,
- enum RPC_PKT_TYPE pkt_type)
-{
- fstring ack_pipe_name;
- fstring pipe_srv_name;
- int i = 0;
+ /*
+ * Setup the lengths for the initial reply.
+ */
- DEBUG(5,("api_pipe_bind_req: decode request. %d\n", __LINE__));
+ p->data_sent_length = 0;
+ p->current_pdu_len = prs_offset(&outgoing_rpc);
+ p->current_pdu_sent = 0;
- for (i = 0; i < num_cmds; i++)
- {
- if (strequal(api_fd_commands[i]->pipe_clnt_name, 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(pipe_srv_name, api_fd_commands[i]->pipe_srv_name);
- break;
- }
- }
+ prs_mem_free(&out_hdr_ba);
+ prs_mem_free(&out_auth);
- if (api_fd_commands[i]->fn == NULL) return False;
+ return True;
- switch (pkt_type)
- {
- case RPC_BINDACK:
- {
- /* name has to be \PIPE\xxxxx */
- fstrcpy(ack_pipe_name, "\\PIPE\\");
- fstrcat(ack_pipe_name, pipe_srv_name);
- break;
- }
- case RPC_ALTCONTRESP:
- {
- /* secondary address CAN be NULL
- * as the specs says it's ignored.
- * It MUST NULL to have the spoolss working.
- */
- fstrcpy(ack_pipe_name, "");
- break;
- }
- default:
- {
- return False;
- }
- }
- return srv_pipe_bind_and_alt_req(l, pd, ack_pipe_name, pkt_type);
-}
+ err_exit:
-/*
- * The RPC Alter-Context call is used only by the spoolss pipe
- * simply because there is a bug (?) in the MS unmarshalling code
- * or in the marshalling code. If it's in the later, then Samba
- * have the same bug.
- */
-static BOOL api_pipe_bind_req(rpcsrv_struct *l, prs_struct *pd,
- const char* name)
-{
- return api_pipe_bind_and_alt_req(l, pd, name, RPC_BINDACK);
+ prs_mem_free(&out_hdr_ba);
+ prs_mem_free(&out_auth);
+ return False;
}
-static BOOL api_pipe_alt_req(rpcsrv_struct *l, prs_struct *pd,
- const char* name)
-{
- return api_pipe_bind_and_alt_req(l, pd, name, RPC_ALTCONTRESP);
-}
+/****************************************************************************
+ Deal with sign & seal processing on an RPC request.
+****************************************************************************/
-static BOOL api_pipe_auth_process(rpcsrv_struct *l, prs_struct *pd)
+static BOOL api_pipe_auth_process(pipes_struct *p, prs_struct *rpc_in)
{
- BOOL auth_verify = IS_BITS_SET_ALL(l->ntlmssp_chal.neg_flags, NTLMSSP_NEGOTIATE_SIGN);
- BOOL auth_seal = IS_BITS_SET_ALL(l->ntlmssp_chal.neg_flags, NTLMSSP_NEGOTIATE_SEAL);
+ /*
+ * We always negotiate the following two bits....
+ */
+ BOOL auth_verify = IS_BITS_SET_ALL(p->ntlmssp_chal_flags, NTLMSSP_NEGOTIATE_SIGN);
+ BOOL auth_seal = IS_BITS_SET_ALL(p->ntlmssp_chal_flags, NTLMSSP_NEGOTIATE_SEAL);
int data_len;
int auth_len;
uint32 old_offset;
uint32 crc32 = 0;
- auth_len = l->hdr.auth_len;
+ auth_len = p->hdr.auth_len;
- if (auth_len != 16 && auth_verify)
- {
+ 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 = l->hdr.frag_len - auth_len - (auth_verify ? 8 : 0) - 0x18;
+ /*
+ * The following is that length of the data we must verify or unseal.
+ * This doesn't include the RPC headers or the auth_len or the RPC_HDR_AUTH_LEN
+ * preceeding the auth_data.
+ */
+
+ 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 = mem_data(&pd->data, pd->offset);
- DEBUG(5,("api_pipe_auth_process: data %d\n", pd->offset));
- NTLMSSPcalc_p(l, (uchar*)data, data_len);
- crc32 = crc32_calc_buffer(data_len, data);
+ if (auth_seal) {
+ char *data = prs_data_p(rpc_in) + RPC_HEADER_LEN + RPC_HDR_REQ_LEN;
+ NTLMSSPcalc_p(p, (uchar*)data, data_len);
+ crc32 = crc32_calc_buffer(data, data_len);
}
- /*** skip the data, record the offset so we can restore it again */
- old_offset = pd->offset;
+ old_offset = prs_offset(rpc_in);
- if (auth_seal || auth_verify)
- {
- pd->offset += data_len;
- smb_io_rpc_hdr_auth("hdr_auth", &l->auth_info, pd, 0);
- }
+ if (auth_seal || auth_verify) {
+ RPC_HDR_AUTH auth_info;
- if (auth_verify)
- {
- char *req_data = mem_data(&pd->data, pd->offset + 4);
- DEBUG(5,("api_pipe_auth_process: auth %d\n", pd->offset + 4));
- NTLMSSPcalc_p(l, (uchar*)req_data, 12);
- smb_io_rpc_auth_ntlmssp_chk("auth_sign", &(l->ntlmssp_chk), pd, 0);
+ 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 (!rpc_auth_ntlmssp_chk(&(l->ntlmssp_chk), crc32,
- l->ntlmssp_seq_num))
- {
+ 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;
}
}
- pd->offset = old_offset;
-
- return True;
-}
-
-static BOOL api_pipe_request(rpcsrv_struct *l, prs_struct *pd, const char* name)
-{
- int i = 0;
-
- if (l->ntlmssp_auth && l->ntlmssp_validated)
- {
- if (!api_pipe_auth_process(l, pd)) 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(0,("api_pipe_request: **** MUST CALL become_user() HERE **** \n"));
-#if 0
- become_user();
-#endif
- }
+ DEBUG(5,("api_pipe_auth_process: auth %d\n", prs_offset(rpc_in) + 4));
- for (i = 0; i < num_cmds; i++)
- {
- if (strequal(api_fd_commands[i]->pipe_clnt_name, name) &&
- api_fd_commands[i]->fn != NULL)
- {
- DEBUG(3,("Doing \\PIPE\\%s\n", api_fd_commands[i]->pipe_clnt_name));
- return api_fd_commands[i]->fn(l, pd);
+ /*
+ * Ensure we have RPC_AUTH_NTLMSSP_CHK_LEN - 4 more bytes in the
+ * incoming buffer.
+ */
+ 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;
}
- }
- return False;
-}
-
-BOOL rpc_add_to_pdu(prs_struct *ps, const char *data, int len)
-{
- int prev_size;
- int new_size;
- char *to = NULL;
-
- ps->offset = 0;
- if (ps->data == NULL)
- {
- DEBUG(10,("rpc_add_to_pdu: new_size: %d\n", len));
- prs_init(ps, len, 4, 0, True);
- prev_size = 0;
- new_size = len;
- if (ps->data == NULL)
- {
+ 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;
}
- }
- else
- {
- prev_size = ps->data->data_used;
- new_size = prev_size + len;
- DEBUG(10,("rpc_add_to_pdu: prev_size: %d new_size: %d\n",
- prev_size, new_size));
- if (!mem_realloc_data(ps->data, new_size))
- {
+
+ if (!rpc_auth_ntlmssp_chk(&ntlmssp_chk, crc32, p->ntlmssp_seq_num)) {
+ DEBUG(0,("api_pipe_auth_process: NTLMSSP check failed.\n"));
return False;
}
}
- DEBUG(10,("ps->data->start: %d\n", ps->data->offset.start));
- ps->data->offset.start = 0x0;
+ /*
+ * Return the current pointer to the data offset.
+ */
- to = mem_data(&ps->data, prev_size);
- if (to == NULL)
- {
- DEBUG(10,("rpc_add_to_pdu: data could not be found\n"));
- return False;
- }
- if (ps->data->data_used != new_size)
- {
- DEBUG(10,("rpc_add_to_pdu: ERROR: data used %d new_size %d\n",
- ps->data->data_used, new_size));
+ 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;
}
- memcpy(to, data, len);
+
return True;
}
-static BOOL rpc_redir_remote(pipes_struct *p, prs_struct *req, prs_struct *resp)
+/****************************************************************************
+ Find the correct RPC function to call for this request.
+ If the pipe is authenticated then become the correct UNIX user
+ before doing the call.
+****************************************************************************/
+
+static BOOL api_pipe_request(pipes_struct *p, prs_struct *rpc_in)
{
- DEBUG(10,("rpc_redirect\n"));
+ int i = 0;
+ BOOL ret = False;
+ BOOL changed_user_id = False;
- if (!msrpc_send_prs(p->m, req))
- {
- DEBUG(2,("msrpc redirect send failed\n"));
- return False;
+ if (p->ntlmssp_auth_validated) {
+ if (!api_pipe_auth_process(p, rpc_in))
+ return False;
+
+ if(!become_authenticated_pipe_user(p))
+ return False;
+
+ changed_user_id = True;
}
- if (!msrpc_receive_prs(p->m, resp))
- {
- DEBUG(2,("msrpc redirect receive failed\n"));
- 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));
+ ret = api_fd_commands[i].fn(p, rpc_in);
+ }
}
- prs_link(NULL, resp, NULL);
- prs_debug_out(resp, "redirect", 100);
- return True;
+
+ if(changed_user_id)
+ unbecome_authenticated_pipe_user(p);
+
+ return ret;
}
-static BOOL rpc_redir_local(rpcsrv_struct *l, prs_struct *req, prs_struct *resp,
- const char* name)
+/****************************************************************************
+ This function is the entry point to processing a DCE/RPC request.
+ All the data for the request (including RPC headers and authentication
+ verifiers) must be linearized in the input_data buffer, with a length
+ of data_len.
+
+ The output is placed into the pipes_struct, and handed back to the
+ client on demand.
+****************************************************************************/
+
+BOOL rpc_command(pipes_struct *p, char *input_data, int data_len)
{
+ prs_struct rpc_in;
BOOL reply = False;
- if (req->data == NULL) return False;
+ if (input_data == NULL)
+ return False;
+
+ prs_init(&rpc_in, 0, 4, UNMARSHALL);
- /* lkclXXXX still assume that the first complete PDU is always
- in a single request!!!
+ /*
+ * Hand the data to the prs_struct, but don't let
+ * it own it.
*/
- /* process the rpc header */
- req->offset = 0x0;
- smb_io_rpc_hdr("", &l->hdr, req, 0);
+ prs_give_memory( &rpc_in, input_data, (uint32)data_len, False);
- if (req->offset == 0) return False;
+ /* Unmarshall the rpc header */
+ if(!smb_io_rpc_hdr("", &p->hdr, &rpc_in, 0)) {
+ DEBUG(0,("rpc_command: failed to unmarshall RPC_HDR.\n"));
+ return False;
+ }
- switch (l->hdr.pkt_type)
- {
- case RPC_BIND :
- {
- reply = api_pipe_bind_req(l, req, name);
- break;
- }
- case RPC_ALTCONT:
- {
- reply = api_pipe_alt_req(l, req, name);
- break;
- }
- case RPC_REQUEST:
- {
- if (l->ntlmssp_auth && !l->ntlmssp_validated)
- {
- /* authentication _was_ requested
- and it failed. sorry, no deal!
- */
- reply = False;
- }
- else
- {
- /* read the rpc header */
- smb_io_rpc_hdr_req("req", &(l->hdr_req), req, 0);
- reply = api_pipe_request(l, req, name);
+ /*
+ * Create the response data buffer.
+ */
+
+ if(!pipe_init_outgoing_data(p)) {
+ DEBUG(0,("rpc_command: failed to unmarshall RPC_HDR.\n"));
+ return False;
+ }
+
+ switch (p->hdr.pkt_type) {
+ case RPC_BIND:
+ reply = api_pipe_bind_req(p, &rpc_in);
+ break;
+ case RPC_REQUEST:
+ if (p->ntlmssp_auth_requested && !p->ntlmssp_auth_validated) {
+ /* authentication _was_ requested
+ and it failed. sorry, no deal!
+ */
+ DEBUG(0,("rpc_command: RPC request received on pipe %s where \
+authentication failed. Denying the request.\n", p->name));
+ reply = False;
+ } else {
+ /* read the RPC request header */
+ if(!smb_io_rpc_hdr_req("req", &p->hdr_req, &rpc_in, 0)) {
+ DEBUG(0,("rpc_command: failed to unmarshall RPC_HDR_REQ.\n"));
+ return False;
}
- break;
- }
- case RPC_BINDRESP: /* not the real name! */
- {
- reply = api_pipe_bind_auth_resp(l, req);
- l->ntlmssp_auth = reply;
- break;
+ reply = api_pipe_request(p, &rpc_in);
}
+ break;
+ case RPC_BINDRESP: /* not the real name! */
+ reply = api_pipe_bind_auth_resp(p, &rpc_in);
+ break;
}
if (!reply)
- {
- reply = api_pipe_fault_resp(l, req, 0x1c010002);
- }
-
- if (reply)
- {
- /* flatten the data into a single pdu */
- reply = prs_copy(resp, &l->rhdr);
- }
-
- /* delete intermediate data used to set up the pdu. leave
- rdata alone because that's got the rest of the data in it */
- rpcsrv_free_temp(l);
+ DEBUG(3,("rpc_command: DCE/RPC fault should be sent here\n"));
return reply;
}
-BOOL rpc_send_and_rcv_pdu(pipes_struct *p)
-{
- DEBUG(10,("rpc_send_and_rcv_pdu\n"));
-
- if (p->m != NULL)
- {
- return rpc_redir_remote(p, &p->smb_pdu, &p->rsmb_pdu);
- }
- else if (p->l != NULL)
- {
- return rpc_redir_local(p->l, &p->smb_pdu, &p->rsmb_pdu,
- p->name);
- }
- return False;
-}
/*******************************************************************
- entry point from msrpc to smb. adds data received to pdu; checks
- pdu; hands pdu off to msrpc, which gets a pdu back (except in the
- case of the RPC_BINDCONT pdu).
+ Calls the underlying RPC function for a named pipe.
********************************************************************/
-BOOL rpc_to_smb(pipes_struct *p, char *data, int len)
-{
- BOOL reply = rpc_add_to_pdu(&p->smb_pdu, data, len);
- if (reply && is_complete_pdu(&p->smb_pdu))
- {
- p->smb_pdu.offset = p->smb_pdu.data->data_size;
- prs_link(NULL, &p->smb_pdu, NULL);
- reply = rpc_send_and_rcv_pdu(p);
- mem_free_data(p->smb_pdu.data);
- prs_init(&p->smb_pdu, 0, 4, 0, True);
-
- }
- return reply;
-}
-
-/*******************************************************************
- receives a netlogon pipe and responds.
- ********************************************************************/
-static BOOL api_rpc_command(rpcsrv_struct *l,
- char *rpc_name, struct api_struct *api_rpc_cmds,
- prs_struct *data)
+BOOL api_rpcTNP(pipes_struct *p, char *rpc_name, struct api_struct *api_rpc_cmds,
+ prs_struct *rpc_in)
{
int fn_num;
- DEBUG(4,("api_rpc_command: %s op 0x%x - ", rpc_name, l->hdr_req.opnum));
- for (fn_num = 0; api_rpc_cmds[fn_num].name; fn_num++)
- {
- if (api_rpc_cmds[fn_num].opnum == l->hdr_req.opnum && api_rpc_cmds[fn_num].fn != NULL)
- {
+ /* interpret the command */
+ DEBUG(4,("api_rpcTNP: %s op 0x%x - ", rpc_name, p->hdr_req.opnum));
+
+ 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_rpc_command: %s\n", api_rpc_cmds[fn_num].name));
break;
}
}
- if (api_rpc_cmds[fn_num].name == NULL)
- {
+ if (api_rpc_cmds[fn_num].name == NULL) {
DEBUG(4, ("unknown\n"));
return False;
}
- /* start off with 1024 bytes, and a large safety margin too */
- prs_init(&l->rdata, 1024, 4, SAFETY_MARGIN, False);
-
/* do the actual command */
- api_rpc_cmds[fn_num].fn(l, data, &(l->rdata));
-
- if (l->rdata.data == NULL || l->rdata.offset == 0)
- {
- mem_free_data(l->rdata.data);
+ if(!api_rpc_cmds[fn_num].fn(p->vuid, rpc_in, &p->rdata)) {
+ DEBUG(0,("api_rpcTNP: %s: failed.\n", rpc_name));
+ prs_mem_free(&p->rdata);
return False;
}
- mem_realloc_data(l->rdata.data, l->rdata.offset);
-
- DEBUG(10,("called %s\n", rpc_name));
+ DEBUG(5,("api_rpcTNP: called %s successfully\n", rpc_name));
return True;
}
-
-
-/*******************************************************************
- receives a netlogon pipe and responds.
- ********************************************************************/
-BOOL api_rpcTNP(rpcsrv_struct *l, char *rpc_name, struct api_struct *api_rpc_cmds,
- prs_struct *data)
-{
- if (data == NULL || data->data == NULL)
- {
- DEBUG(2,("%s: NULL data received\n", rpc_name));
- return False;
- }
-
- /* interpret the command */
- if (!api_rpc_command(l, rpc_name, api_rpc_cmds, data))
- {
- return False;
- }
-
- /* create the rpc header */
- if (!create_rpc_reply(l, 0))
- {
- return False;
- }
-
- return True;
-}
-
-BOOL is_complete_pdu(prs_struct *ps)
-{
- RPC_HDR hdr;
- int len = ps->data->data_size;
-
- DEBUG(10,("is_complete_pdu - len %d\n", len));
- ps->offset = 0x0;
-
- if (!ps->io)
- {
- /* writing. oops!! */
- DEBUG(4,("is_complete_pdu: write set, not read!\n"));
- return False;
- }
-
- if (!smb_io_rpc_hdr("hdr", &hdr, ps, 0))
- {
- return False;
- }
- /* check that the fragment length is equal to the data length so far */
- return hdr.frag_len == len;
-}