X-Git-Url: http://git.samba.org/?p=samba.git;a=blobdiff_plain;f=source3%2Frpc_server%2Fsrv_pipe_hnd.c;h=c55e3287051965047ddbc232b2e7167932066b27;hp=ddc8f3cd2de65c07fa5b0f76789289166bce1ce6;hb=756b4b6048f718b5c34af105dd670059f7b83882;hpb=d876260d885ad991526544756609ea38e4867028 diff --git a/source3/rpc_server/srv_pipe_hnd.c b/source3/rpc_server/srv_pipe_hnd.c index ddc8f3cd2de..c55e3287051 100644 --- a/source3/rpc_server/srv_pipe_hnd.c +++ b/source3/rpc_server/srv_pipe_hnd.c @@ -1,14 +1,13 @@ /* - * Unix SMB/Netbios implementation. - * Version 1.9. + * Unix SMB/CIFS implementation. * RPC Pipe client / server routines * Copyright (C) Andrew Tridgell 1992-1998, - * Copyright (C) Luke Kenneth Casson Leighton 1996-1998, - * Copyright (C) Jeremy Allison 1999. + * Largely re-written : 2005 + * Copyright (C) Jeremy Allison 1998 - 2005 * * 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 - * the Free Software Foundation; either version 2 of the License, or + * the Free Software Foundation; either version 3 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, @@ -17,35 +16,60 @@ * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + * along with this program; if not, see . */ #include "includes.h" -#define PIPE "\\PIPE\\" -#define PIPELEN strlen(PIPE) +#undef DBGC_CLASS +#define DBGC_CLASS DBGC_RPC_SRV -static pipes_struct *chain_p; +static smb_np_struct *chain_p; static int pipes_open; -#ifndef MAX_OPEN_PIPES -#define MAX_OPEN_PIPES 1024 +/* + * Sometimes I can't decide if I hate Windows printer driver + * writers more than I hate the Windows spooler service driver + * writers. This gets around a combination of bugs in the spooler + * and the HP 8500 PCL driver that causes a spooler spin. JRA. + * + * bumped up from 20 -> 64 after viewing traffic from WordPerfect + * 2002 running on NT 4.- SP6 + * bumped up from 64 -> 256 after viewing traffic from con2prt + * for lots of printers on a WinNT 4.x SP6 box. + */ + +#ifndef MAX_OPEN_SPOOLSS_PIPES +#define MAX_OPEN_SPOOLSS_PIPES 256 #endif +static int current_spoolss_pipes_open; -static pipes_struct *Pipes; +static smb_np_struct *Pipes; +static pipes_struct *InternalPipes; static struct bitmap *bmap; +/* TODO + * the following prototypes are declared here to avoid + * code being moved about too much for a patch to be + * disrupted / less obvious. + * + * these functions, and associated functions that they + * call, should be moved behind a .so module-loading + * system _anyway_. so that's the next step... + */ + +static int close_internal_rpc_pipe_hnd(struct pipes_struct *p); + /**************************************************************************** - Pipe iterator functions. + Internal Pipe iterator functions. ****************************************************************************/ -pipes_struct *get_first_pipe(void) +pipes_struct *get_first_internal_pipe(void) { - return Pipes; + return InternalPipes; } -pipes_struct *get_next_pipe(pipes_struct *p) +pipes_struct *get_next_internal_pipe(pipes_struct *p) { return p->next; } @@ -59,15 +83,17 @@ static int pipe_handle_offset; void set_pipe_handle_offset(int max_open_files) { - if(max_open_files < 0x7000) - pipe_handle_offset = 0x7000; - else - pipe_handle_offset = max_open_files + 10; /* For safety. :-) */ + if(max_open_files < 0x7000) { + pipe_handle_offset = 0x7000; + } else { + pipe_handle_offset = max_open_files + 10; /* For safety. :-) */ + } } /**************************************************************************** Reset pipe chain handle number. ****************************************************************************/ + void reset_chain_p(void) { chain_p = NULL; @@ -80,15 +106,16 @@ void reset_chain_p(void) void init_rpc_pipe_hnd(void) { bmap = bitmap_allocate(MAX_OPEN_PIPES); - if (!bmap) + if (!bmap) { exit_server("out of memory in init_rpc_pipe_hnd"); + } } /**************************************************************************** Initialise an outgoing packet. ****************************************************************************/ -static BOOL pipe_init_outgoing_data(pipes_struct *p) +static bool pipe_init_outgoing_data(pipes_struct *p) { output_data *o_data = &p->out_data; @@ -106,7 +133,7 @@ static BOOL pipe_init_outgoing_data(pipes_struct *p) * Initialize the outgoing RPC data buffer. * we will use this as the raw data area for replying to rpc requests. */ - if(!prs_init(&o_data->rdata, MAX_PDU_FRAG_LEN, p->mem_ctx, MARSHALL)) { + if(!prs_init(&o_data->rdata, RPC_MAX_PDU_FRAG_LEN, p->mem_ctx, MARSHALL)) { DEBUG(0,("pipe_init_outgoing_data: malloc fail.\n")); return False; } @@ -118,22 +145,34 @@ static BOOL pipe_init_outgoing_data(pipes_struct *p) Find first available pipe slot. ****************************************************************************/ -pipes_struct *open_rpc_pipe_p(char *pipe_name, +smb_np_struct *open_rpc_pipe_p(const char *pipe_name, connection_struct *conn, uint16 vuid) { int i; - pipes_struct *p; + smb_np_struct *p, *p_it; static int next_pipe; + bool is_spoolss_pipe = False; DEBUG(4,("Open pipe requested %s (pipes_open=%d)\n", pipe_name, pipes_open)); - + if (strstr(pipe_name, "spoolss")) { + is_spoolss_pipe = True; + } + + if (is_spoolss_pipe && current_spoolss_pipes_open >= MAX_OPEN_SPOOLSS_PIPES) { + DEBUG(10,("open_rpc_pipe_p: spooler bug workaround. Denying open on pipe %s\n", + pipe_name )); + return NULL; + } + /* not repeating pipe numbers makes it easier to track things in log files and prevents client bugs where pipe numbers are reused over connection restarts */ - if (next_pipe == 0) + + if (next_pipe == 0) { next_pipe = (sys_getpid() ^ time(NULL)) % MAX_OPEN_PIPES; + } i = bitmap_find(bmap, next_pipe); @@ -144,30 +183,40 @@ pipes_struct *open_rpc_pipe_p(char *pipe_name, next_pipe = (i+1) % MAX_OPEN_PIPES; - for (p = Pipes; p; p = p->next) + for (p = Pipes; p; p = p->next) { DEBUG(5,("open_rpc_pipe_p: name %s pnum=%x\n", p->name, p->pnum)); + } - p = (pipes_struct *)malloc(sizeof(*p)); - - if (!p) + p = talloc(NULL, smb_np_struct); + if (!p) { + DEBUG(0,("ERROR! no memory for smb_np_struct!\n")); return NULL; + } ZERO_STRUCTP(p); - if ((p->mem_ctx = talloc_init()) == NULL) { - DEBUG(0,("open_rpc_pipe_p: talloc_init failed.\n")); - SAFE_FREE(p); + p->name = talloc_strdup(p, pipe_name); + if (p->name == NULL) { + TALLOC_FREE(p); + DEBUG(0,("ERROR! no memory for pipe name!\n")); return NULL; } - if (!init_pipe_handle_list(p, pipe_name)) { - DEBUG(0,("open_rpc_pipe_p: init_pipe_handles failed.\n")); - talloc_destroy(p->mem_ctx); - SAFE_FREE(p); + /* add a dso mechanism instead of this, here */ + + p->namedpipe_create = make_internal_rpc_pipe_p; + p->namedpipe_read = read_from_internal_pipe; + p->namedpipe_write = write_to_internal_pipe; + + p->np_state = p->namedpipe_create(pipe_name, conn->client_address, + conn->server_info, vuid); + + if (p->np_state == NULL) { + DEBUG(0,("open_rpc_pipe_p: make_internal_rpc_pipe_p failed.\n")); + TALLOC_FREE(p); return NULL; } - DLIST_ADD(Pipes, p); /* @@ -177,11 +226,6 @@ pipes_struct *open_rpc_pipe_p(char *pipe_name, * change the type to UNMARSALLING before processing the stream. */ - if(!prs_init(&p->in_data.data, MAX_PDU_FRAG_LEN, p->mem_ctx, MARSHALL)) { - DEBUG(0,("open_rpc_pipe_p: malloc fail for in_data struct.\n")); - return NULL; - } - bitmap_set(bmap, i); i += pipe_handle_offset; @@ -196,52 +240,103 @@ pipes_struct *open_rpc_pipe_p(char *pipe_name, p->vuid = vuid; p->max_trans_reply = 0; + + DEBUG(4,("Opened pipe %s with handle %x (pipes_open=%d)\n", + pipe_name, i, pipes_open)); + + chain_p = p; - p->ntlmssp_chal_flags = 0; - p->ntlmssp_auth_validated = False; - p->ntlmssp_auth_requested = False; + /* Iterate over p_it as a temp variable, to display all open pipes */ + for (p_it = Pipes; p_it; p_it = p_it->next) { + DEBUG(5,("open pipes: name %s pnum=%x\n", p_it->name, p_it->pnum)); + } - p->pipe_bound = False; - p->fault_state = False; - p->endian = RPC_LITTLE_ENDIAN; + return chain_p; +} - /* - * Initialize the incoming RPC struct. - */ +/**************************************************************************** + Make an internal namedpipes structure +****************************************************************************/ - p->in_data.pdu_needed_len = 0; - p->in_data.pdu_received_len = 0; +struct pipes_struct *make_internal_rpc_pipe_p(const char *pipe_name, + const char *client_address, + struct auth_serversupplied_info *server_info, + uint16_t vuid) +{ + pipes_struct *p; + + DEBUG(4,("Create pipe requested %s\n", pipe_name)); + + p = TALLOC_ZERO_P(NULL, pipes_struct); + + if (!p) { + DEBUG(0,("ERROR! no memory for pipes_struct!\n")); + return NULL; + } + + if ((p->mem_ctx = talloc_init("pipe %s %p", pipe_name, p)) == NULL) { + DEBUG(0,("open_rpc_pipe_p: talloc_init failed.\n")); + TALLOC_FREE(p); + return NULL; + } + + if (!init_pipe_handle_list(p, pipe_name)) { + DEBUG(0,("open_rpc_pipe_p: init_pipe_handles failed.\n")); + talloc_destroy(p->mem_ctx); + TALLOC_FREE(p); + return NULL; + } /* - * Initialize the outgoing RPC struct. + * Initialize the incoming RPC data buffer with one PDU worth of memory. + * We cheat here and say we're marshalling, as we intend to add incoming + * data directly into the prs_struct and we want it to auto grow. We will + * change the type to UNMARSALLING before processing the stream. */ - p->out_data.current_pdu_len = 0; - p->out_data.current_pdu_sent = 0; - p->out_data.data_sent_length = 0; + if(!prs_init(&p->in_data.data, RPC_MAX_PDU_FRAG_LEN, p->mem_ctx, MARSHALL)) { + DEBUG(0,("open_rpc_pipe_p: malloc fail for in_data struct.\n")); + talloc_destroy(p->mem_ctx); + close_policy_by_pipe(p); + TALLOC_FREE(p); + return NULL; + } + + p->server_info = copy_serverinfo(p, server_info); + if (p->server_info == NULL) { + DEBUG(0, ("open_rpc_pipe_p: copy_serverinfo failed\n")); + talloc_destroy(p->mem_ctx); + close_policy_by_pipe(p); + TALLOC_FREE(p); + return NULL; + } + + DLIST_ADD(InternalPipes, p); + + memcpy(p->client_address, client_address, sizeof(p->client_address)); + + p->endian = RPC_LITTLE_ENDIAN; + + ZERO_STRUCT(p->pipe_user); + + p->pipe_user.vuid = vuid; + p->pipe_user.ut.uid = (uid_t)-1; + p->pipe_user.ut.gid = (gid_t)-1; + p->pipe_user.nt_user_token = dup_nt_token(NULL, server_info->ptok); /* * Initialize the outgoing RPC data buffer with no memory. */ - prs_init(&p->out_data.rdata, 0, p->mem_ctx, MARSHALL); - - ZERO_STRUCT(p->pipe_user); - - p->pipe_user.uid = (uid_t)-1; - p->pipe_user.gid = (gid_t)-1; + prs_init_empty(&p->out_data.rdata, p->mem_ctx, MARSHALL); fstrcpy(p->name, pipe_name); - DEBUG(4,("Opened pipe %s with handle %x (pipes_open=%d)\n", - pipe_name, i, pipes_open)); - - chain_p = p; - - /* OVERWRITE p as a temp variable, to display all open pipes */ - for (p = Pipes; p; p = p->next) - DEBUG(5,("open pipes: name %s pnum=%x\n", p->name, p->pnum)); + DEBUG(4,("Created internal pipe %s (pipes_open=%d)\n", + pipe_name, pipes_open)); - return chain_p; + talloc_set_destructor(p, close_internal_rpc_pipe_hnd); + + return p; } /**************************************************************************** @@ -254,8 +349,8 @@ static void set_incoming_fault(pipes_struct *p) p->in_data.pdu_needed_len = 0; p->in_data.pdu_received_len = 0; p->fault_state = True; - DEBUG(10,("set_incoming_fault: Setting fault state on pipe %s : pnum = 0x%x\n", - p->name, p->pnum )); + DEBUG(10, ("set_incoming_fault: Setting fault state on pipe %s\n", + p->name)); } /**************************************************************************** @@ -294,7 +389,7 @@ static ssize_t unmarshall_rpc_header(pipes_struct *p) return -1; } - prs_init( &rpc_in, 0, p->mem_ctx, UNMARSHALL); + prs_init_empty( &rpc_in, p->mem_ctx, UNMARSHALL); prs_set_endian_data( &rpc_in, p->endian); prs_give_memory( &rpc_in, (char *)&p->in_data.current_in_pdu[0], @@ -376,7 +471,7 @@ static ssize_t unmarshall_rpc_header(pipes_struct *p) * Ensure that the pdu length is sane. */ - if((p->hdr.frag_len < RPC_HEADER_LEN) || (p->hdr.frag_len > MAX_PDU_FRAG_LEN)) { + if((p->hdr.frag_len < RPC_HEADER_LEN) || (p->hdr.frag_len > RPC_MAX_PDU_FRAG_LEN)) { DEBUG(0,("unmarshall_rpc_header: assert on frag length failed.\n")); set_incoming_fault(p); prs_mem_free(&rpc_in); @@ -386,18 +481,8 @@ static ssize_t unmarshall_rpc_header(pipes_struct *p) DEBUG(10,("unmarshall_rpc_header: type = %u, flags = %u\n", (unsigned int)p->hdr.pkt_type, (unsigned int)p->hdr.flags )); - /* - * Adjust for the header we just ate. - */ - p->in_data.pdu_received_len = 0; p->in_data.pdu_needed_len = (uint32)p->hdr.frag_len - RPC_HEADER_LEN; - /* - * Null the data we just ate. - */ - - memset((char *)&p->in_data.current_in_pdu[0], '\0', RPC_HEADER_LEN); - prs_mem_free(&rpc_in); return 0; /* No extra data processed. */ @@ -408,15 +493,17 @@ static ssize_t unmarshall_rpc_header(pipes_struct *p) a complete PDU. ****************************************************************************/ -void free_pipe_context(pipes_struct *p) +static void free_pipe_context(pipes_struct *p) { if (p->mem_ctx) { - DEBUG(3,("free_pipe_context: destroying talloc pool of size %u\n", talloc_pool_size(p->mem_ctx) )); - talloc_destroy_pool(p->mem_ctx); + DEBUG(3,("free_pipe_context: destroying talloc pool of size " + "%lu\n", (unsigned long)talloc_total_size(p->mem_ctx) )); + talloc_free_children(p->mem_ctx); } else { - p->mem_ctx = talloc_init(); - if (p->mem_ctx == NULL) + p->mem_ctx = talloc_init("pipe %s %p", p->name, p); + if (p->mem_ctx == NULL) { p->fault_state = True; + } } } @@ -425,11 +512,11 @@ void free_pipe_context(pipes_struct *p) appends the data into the complete stream if the LAST flag is not set. ****************************************************************************/ -static BOOL process_request_pdu(pipes_struct *p, prs_struct *rpc_in_p) +static bool process_request_pdu(pipes_struct *p, prs_struct *rpc_in_p) { - BOOL auth_verify = ((p->ntlmssp_chal_flags & NTLMSSP_NEGOTIATE_SIGN) != 0); + uint32 ss_padding_len = 0; size_t data_len = p->hdr.frag_len - RPC_HEADER_LEN - RPC_HDR_REQ_LEN - - (auth_verify ? RPC_HDR_AUTH_LEN : 0) - p->hdr.auth_len; + (p->hdr.auth_len ? RPC_HDR_AUTH_LEN : 0) - p->hdr.auth_len; if(!p->pipe_bound) { DEBUG(0,("process_request_pdu: rpc request with no bind.\n")); @@ -452,29 +539,50 @@ static BOOL process_request_pdu(pipes_struct *p, prs_struct *rpc_in_p) return False; } - if(p->ntlmssp_auth_validated && !api_pipe_auth_process(p, rpc_in_p)) { - DEBUG(0,("process_request_pdu: failed to do auth processing.\n")); - set_incoming_fault(p); - return False; - } + switch(p->auth.auth_type) { + case PIPE_AUTH_TYPE_NONE: + break; - if (p->ntlmssp_auth_requested && !p->ntlmssp_auth_validated) { + case PIPE_AUTH_TYPE_SPNEGO_NTLMSSP: + case PIPE_AUTH_TYPE_NTLMSSP: + { + NTSTATUS status; + if(!api_pipe_ntlmssp_auth_process(p, rpc_in_p, &ss_padding_len, &status)) { + DEBUG(0,("process_request_pdu: failed to do auth processing.\n")); + DEBUG(0,("process_request_pdu: error was %s.\n", nt_errstr(status) )); + set_incoming_fault(p); + return False; + } + break; + } - /* - * Authentication _was_ requested and it already failed. - */ + case PIPE_AUTH_TYPE_SCHANNEL: + if (!api_pipe_schannel_process(p, rpc_in_p, &ss_padding_len)) { + DEBUG(3,("process_request_pdu: failed to do schannel processing.\n")); + set_incoming_fault(p); + return False; + } + break; - DEBUG(0,("process_request_pdu: RPC request received on pipe %s where \ -authentication failed. Denying the request.\n", p->name)); - set_incoming_fault(p); - return False; - } + default: + DEBUG(0,("process_request_pdu: unknown auth type %u set.\n", (unsigned int)p->auth.auth_type )); + set_incoming_fault(p); + return False; + } + + /* Now we've done the sign/seal we can remove any padding data. */ + if (data_len > ss_padding_len) { + data_len -= ss_padding_len; + } /* - * Check the data length doesn't go over the 10Mb limit. + * Check the data length doesn't go over the 15Mb limit. + * increased after observing a bug in the Windows NT 4.0 SP6a + * spoolsv.exe when the response to a GETPRINTERDRIVER2 RPC + * will not fit in the initial buffer of size 0x1068 --jerry 22/01/2002 */ - if(prs_data_size(&p->in_data.data) + data_len > 10*1024*1024) { + if(prs_offset(&p->in_data.data) + data_len > 15*1024*1024) { DEBUG(0,("process_request_pdu: rpc data buffer too large (%u) + (%u)\n", (unsigned int)prs_data_size(&p->in_data.data), (unsigned int)data_len )); set_incoming_fault(p); @@ -485,20 +593,15 @@ authentication failed. Denying the request.\n", p->name)); * Append the data portion into the buffer and return. */ - { - char *data_from = prs_data_p(rpc_in_p) + prs_offset(rpc_in_p); - - if(!prs_append_data(&p->in_data.data, data_from, data_len)) { - DEBUG(0,("process_request_pdu: Unable to append data size %u to parse buffer of size %u.\n", - (unsigned int)data_len, (unsigned int)prs_data_size(&p->in_data.data) )); - set_incoming_fault(p); - return False; - } - + if(!prs_append_some_prs_data(&p->in_data.data, rpc_in_p, prs_offset(rpc_in_p), data_len)) { + DEBUG(0,("process_request_pdu: Unable to append data size %u to parse buffer of size %u.\n", + (unsigned int)data_len, (unsigned int)prs_data_size(&p->in_data.data) )); + set_incoming_fault(p); + return False; } if(p->hdr.flags & RPC_FLG_LAST) { - BOOL ret = False; + bool ret = False; /* * Ok - we finally have a complete RPC stream. * Call the rpc command to process it. @@ -509,8 +612,7 @@ authentication failed. Denying the request.\n", p->name)); * size as the current offset. */ - if(!prs_set_buffer_size(&p->in_data.data, prs_offset(&p->in_data.data))) - { + if(!prs_set_buffer_size(&p->in_data.data, prs_offset(&p->in_data.data))) { DEBUG(0,("process_request_pdu: Call to prs_set_buffer_size failed!\n")); set_incoming_fault(p); return False; @@ -530,8 +632,9 @@ authentication failed. Denying the request.\n", p->name)); free_pipe_context(p); - if(pipe_init_outgoing_data(p)) + if(pipe_init_outgoing_data(p)) { ret = api_pipe_request(p); + } free_pipe_context(p); @@ -556,22 +659,22 @@ authentication failed. Denying the request.\n", p->name)); already been parsed and stored in p->hdr. ****************************************************************************/ -static ssize_t process_complete_pdu(pipes_struct *p) +static void process_complete_pdu(pipes_struct *p) { prs_struct rpc_in; - size_t data_len = p->in_data.pdu_received_len; - char *data_p = (char *)&p->in_data.current_in_pdu[0]; - BOOL reply = False; + size_t data_len = p->in_data.pdu_received_len - RPC_HEADER_LEN; + char *data_p = (char *)&p->in_data.current_in_pdu[RPC_HEADER_LEN]; + bool reply = False; if(p->fault_state) { DEBUG(10,("process_complete_pdu: pipe %s in fault state.\n", p->name )); set_incoming_fault(p); - setup_fault_pdu(p, NT_STATUS(0x1c010002)); - return (ssize_t)data_len; + setup_fault_pdu(p, NT_STATUS(DCERPC_FAULT_OP_RNG_ERROR)); + return; } - prs_init( &rpc_in, 0, p->mem_ctx, UNMARSHALL); + prs_init_empty( &rpc_in, p->mem_ctx, UNMARSHALL); /* * Ensure we're using the corrent endianness for both the @@ -587,24 +690,102 @@ static ssize_t process_complete_pdu(pipes_struct *p) (unsigned int)p->hdr.pkt_type )); switch (p->hdr.pkt_type) { + case RPC_REQUEST: + reply = process_request_pdu(p, &rpc_in); + break; + + case RPC_PING: /* CL request - ignore... */ + DEBUG(0,("process_complete_pdu: Error. Connectionless packet type %u received on pipe %s.\n", + (unsigned int)p->hdr.pkt_type, p->name)); + break; + + case RPC_RESPONSE: /* No responses here. */ + DEBUG(0,("process_complete_pdu: Error. RPC_RESPONSE received from client on pipe %s.\n", + p->name )); + break; + + case RPC_FAULT: + case RPC_WORKING: /* CL request - reply to a ping when a call in process. */ + case RPC_NOCALL: /* CL - server reply to a ping call. */ + case RPC_REJECT: + case RPC_ACK: + case RPC_CL_CANCEL: + case RPC_FACK: + case RPC_CANCEL_ACK: + DEBUG(0,("process_complete_pdu: Error. Connectionless packet type %u received on pipe %s.\n", + (unsigned int)p->hdr.pkt_type, p->name)); + break; + case RPC_BIND: - case RPC_ALTCONT: /* * We assume that a pipe bind is only in one pdu. */ - if(pipe_init_outgoing_data(p)) + if(pipe_init_outgoing_data(p)) { reply = api_pipe_bind_req(p, &rpc_in); + } + break; + + case RPC_BINDACK: + case RPC_BINDNACK: + DEBUG(0,("process_complete_pdu: Error. RPC_BINDACK/RPC_BINDNACK packet type %u received on pipe %s.\n", + (unsigned int)p->hdr.pkt_type, p->name)); + break; + + + case RPC_ALTCONT: + /* + * We assume that a pipe bind is only in one pdu. + */ + if(pipe_init_outgoing_data(p)) { + reply = api_pipe_alter_context(p, &rpc_in); + } + break; + + case RPC_ALTCONTRESP: + DEBUG(0,("process_complete_pdu: Error. RPC_ALTCONTRESP on pipe %s: Should only be server -> client.\n", + p->name)); break; - case RPC_BINDRESP: + + case RPC_AUTH3: /* - * We assume that a pipe bind_resp is only in one pdu. + * The third packet in an NTLMSSP auth exchange. */ - if(pipe_init_outgoing_data(p)) - reply = api_pipe_bind_auth_resp(p, &rpc_in); + if(pipe_init_outgoing_data(p)) { + reply = api_pipe_bind_auth3(p, &rpc_in); + } break; - case RPC_REQUEST: - reply = process_request_pdu(p, &rpc_in); + + case RPC_SHUTDOWN: + DEBUG(0,("process_complete_pdu: Error. RPC_SHUTDOWN on pipe %s: Should only be server -> client.\n", + p->name)); + break; + + case RPC_CO_CANCEL: + /* For now just free all client data and continue processing. */ + DEBUG(3,("process_complete_pdu: RPC_ORPHANED. Abandoning rpc call.\n")); + /* As we never do asynchronous RPC serving, we can never cancel a + call (as far as I know). If we ever did we'd have to send a cancel_ack + reply. For now, just free all client data and continue processing. */ + reply = True; + break; +#if 0 + /* Enable this if we're doing async rpc. */ + /* We must check the call-id matches the outstanding callid. */ + if(pipe_init_outgoing_data(p)) { + /* Send a cancel_ack PDU reply. */ + /* We should probably check the auth-verifier here. */ + reply = setup_cancel_ack_reply(p, &rpc_in); + } + break; +#endif + + case RPC_ORPHANED: + /* We should probably check the auth-verifier here. + For now just free all client data and continue processing. */ + DEBUG(3,("process_complete_pdu: RPC_ORPHANED. Abandoning rpc call.\n")); + reply = True; break; + default: DEBUG(0,("process_complete_pdu: Unknown rpc type = %u received.\n", (unsigned int)p->hdr.pkt_type )); break; @@ -616,7 +797,7 @@ static ssize_t process_complete_pdu(pipes_struct *p) if (!reply) { DEBUG(3,("process_complete_pdu: DCE/RPC fault sent on pipe %s\n", p->pipe_srv_name)); set_incoming_fault(p); - setup_fault_pdu(p, NT_STATUS(0x1c010002)); + setup_fault_pdu(p, NT_STATUS(DCERPC_FAULT_OP_RNG_ERROR)); prs_mem_free(&rpc_in); } else { /* @@ -627,7 +808,6 @@ static ssize_t process_complete_pdu(pipes_struct *p) } prs_mem_free(&rpc_in); - return (ssize_t)data_len; } /**************************************************************************** @@ -636,7 +816,7 @@ static ssize_t process_complete_pdu(pipes_struct *p) static ssize_t process_incoming_data(pipes_struct *p, char *data, size_t n) { - size_t data_to_copy = MIN(n, MAX_PDU_FRAG_LEN - p->in_data.pdu_received_len); + size_t data_to_copy = MIN(n, RPC_MAX_PDU_FRAG_LEN - p->in_data.pdu_received_len); DEBUG(10,("process_incoming_data: Start: pdu_received_len = %u, pdu_needed_len = %u, incoming data = %u\n", (unsigned int)p->in_data.pdu_received_len, (unsigned int)p->in_data.pdu_needed_len, @@ -677,8 +857,15 @@ incoming data size = %u\n", (unsigned int)p->in_data.pdu_received_len, (unsigned * data we need, then loop again. */ - if(p->in_data.pdu_needed_len == 0) - return unmarshall_rpc_header(p); + if(p->in_data.pdu_needed_len == 0) { + ssize_t rret = unmarshall_rpc_header(p); + if (rret == -1 || p->in_data.pdu_needed_len > 0) { + return rret; + } + /* If rret == 0 and pdu_needed_len == 0 here we have a PDU that consists + of an RPC_HEADER only. This is a RPC_SHUTDOWN, RPC_CO_CANCEL or RPC_ORPHANED + pdu type. Deal with this in process_complete_pdu(). */ + } /* * Ok - at this point we have a valid RPC_HEADER in p->hdr. @@ -689,39 +876,52 @@ incoming data size = %u\n", (unsigned int)p->in_data.pdu_received_len, (unsigned /* * Copy as much of the data as we need into the current_in_pdu buffer. + * pdu_needed_len becomes zero when we have a complete pdu. */ memcpy( (char *)&p->in_data.current_in_pdu[p->in_data.pdu_received_len], data, data_to_copy); p->in_data.pdu_received_len += data_to_copy; + p->in_data.pdu_needed_len -= data_to_copy; /* * Do we have a complete PDU ? + * (return the number of bytes handled in the call) */ - if(p->in_data.pdu_received_len == p->in_data.pdu_needed_len) - return process_complete_pdu(p); + if(p->in_data.pdu_needed_len == 0) { + process_complete_pdu(p); + return data_to_copy; + } DEBUG(10,("process_incoming_data: not a complete PDU yet. pdu_received_len = %u, pdu_needed_len = %u\n", (unsigned int)p->in_data.pdu_received_len, (unsigned int)p->in_data.pdu_needed_len )); return (ssize_t)data_to_copy; - } /**************************************************************************** Accepts incoming data on an rpc pipe. ****************************************************************************/ -ssize_t write_to_pipe(pipes_struct *p, char *data, size_t n) +ssize_t write_to_pipe(smb_np_struct *p, char *data, size_t n) { - size_t data_left = n; - DEBUG(6,("write_to_pipe: %x", p->pnum)); DEBUG(6,(" name: %s open: %s len: %d\n", p->name, BOOLSTR(p->open), (int)n)); - dump_data(50, data, n); + dump_data(50, (uint8 *)data, n); + + return p->namedpipe_write(p->np_state, data, n); +} + +/**************************************************************************** + Accepts incoming data on an internal rpc pipe. +****************************************************************************/ + +ssize_t write_to_internal_pipe(struct pipes_struct *p, char *data, size_t n) +{ + size_t data_left = n; while(data_left) { ssize_t data_used; @@ -732,8 +932,9 @@ ssize_t write_to_pipe(pipes_struct *p, char *data, size_t n) DEBUG(10,("write_to_pipe: data_used = %d\n", (int)data_used )); - if(data_used < 0) + if(data_used < 0) { return -1; + } data_left -= data_used; data += data_used; @@ -753,11 +954,9 @@ ssize_t write_to_pipe(pipes_struct *p, char *data, size_t n) have been prepared into arrays of headers + data stream sections. ****************************************************************************/ -ssize_t read_from_pipe(pipes_struct *p, char *data, size_t n) +ssize_t read_from_pipe(smb_np_struct *p, char *data, size_t n, + bool *is_data_outstanding) { - uint32 pdu_remaining = 0; - ssize_t data_returned = 0; - if (!p || !p->open) { DEBUG(0,("read_from_pipe: pipe not open\n")); return -1; @@ -765,6 +964,31 @@ ssize_t read_from_pipe(pipes_struct *p, char *data, size_t n) DEBUG(6,("read_from_pipe: %x", p->pnum)); + return p->namedpipe_read(p->np_state, data, n, is_data_outstanding); +} + +/**************************************************************************** + Replies to a request to read data from a pipe. + + Headers are interspersed with the data at PDU intervals. By the time + this function is called, the start of the data could possibly have been + read by an SMBtrans (file_offset != 0). + + Calling create_rpc_reply() here is a hack. The data should already + have been prepared into arrays of headers + data stream sections. +****************************************************************************/ + +ssize_t read_from_internal_pipe(struct pipes_struct *p, char *data, size_t n, + bool *is_data_outstanding) +{ + uint32 pdu_remaining = 0; + ssize_t data_returned = 0; + + if (!p) { + DEBUG(0,("read_from_pipe: pipe not open\n")); + return -1; + } + DEBUG(6,(" name: %s len: %u\n", p->name, (unsigned int)n)); /* @@ -778,9 +1002,10 @@ ssize_t read_from_pipe(pipes_struct *p, char *data, size_t n) * authentications failing. Just ignore it so things work. */ - if(n > MAX_PDU_FRAG_LEN) { + if(n > RPC_MAX_PDU_FRAG_LEN) { DEBUG(5,("read_from_pipe: too large read (%u) requested on \ -pipe %s. We can only service %d sized reads.\n", (unsigned int)n, p->name, MAX_PDU_FRAG_LEN )); +pipe %s. We can only service %d sized reads.\n", (unsigned int)n, p->name, RPC_MAX_PDU_FRAG_LEN )); + n = RPC_MAX_PDU_FRAG_LEN; } /* @@ -839,6 +1064,7 @@ returning %d bytes.\n", p->name, (unsigned int)p->out_data.current_pdu_len, out: + (*is_data_outstanding) = p->out_data.current_pdu_len > n; return data_returned; } @@ -846,10 +1072,11 @@ returning %d bytes.\n", p->name, (unsigned int)p->out_data.current_pdu_len, Wait device state on a pipe. Exactly what this is for is unknown... ****************************************************************************/ -BOOL wait_rpc_pipe_hnd_state(pipes_struct *p, uint16 priority) +bool wait_rpc_pipe_hnd_state(smb_np_struct *p, uint16 priority) { - if (p == NULL) + if (p == NULL) { return False; + } if (p->open) { DEBUG(3,("wait_rpc_pipe_hnd_state: Setting pipe wait state priority=%x on pipe (name=%s)\n", @@ -870,10 +1097,11 @@ BOOL wait_rpc_pipe_hnd_state(pipes_struct *p, uint16 priority) Set device state on a pipe. Exactly what this is for is unknown... ****************************************************************************/ -BOOL set_rpc_pipe_hnd_state(pipes_struct *p, uint16 device_state) +bool set_rpc_pipe_hnd_state(smb_np_struct *p, uint16 device_state) { - if (p == NULL) + if (p == NULL) { return False; + } if (p->open) { DEBUG(3,("set_rpc_pipe_hnd_state: Setting pipe device state=%x on pipe (name=%s)\n", @@ -894,21 +1122,14 @@ BOOL set_rpc_pipe_hnd_state(pipes_struct *p, uint16 device_state) Close an rpc pipe. ****************************************************************************/ -BOOL close_rpc_pipe_hnd(pipes_struct *p, connection_struct *conn) +bool close_rpc_pipe_hnd(smb_np_struct *p) { if (!p) { DEBUG(0,("Invalid pipe in close_rpc_pipe_hnd\n")); return False; } - prs_mem_free(&p->out_data.rdata); - prs_mem_free(&p->in_data.data); - - if (p->mem_ctx) - talloc_destroy(p->mem_ctx); - - /* Free the handles database. */ - close_policy_by_pipe(p); + TALLOC_FREE(p->np_state); bitmap_clear(bmap, p->pnum - pipe_handle_offset); @@ -918,13 +1139,70 @@ BOOL close_rpc_pipe_hnd(pipes_struct *p, connection_struct *conn) p->name, p->pnum, pipes_open)); DLIST_REMOVE(Pipes, p); + + /* TODO: Remove from pipe open db */ + + if ( !delete_pipe_opendb( p ) ) { + DEBUG(3,("close_rpc_pipe_hnd: failed to delete %s " + "pipe from open db.\n", p->name)); + } + + TALLOC_FREE(p); + + return True; +} + +/**************************************************************************** + Close all pipes on a connection. +****************************************************************************/ - delete_nt_token(&p->pipe_user.nt_user_token); - SAFE_FREE(p->pipe_user.groups); +void pipe_close_conn(connection_struct *conn) +{ + smb_np_struct *p, *next; + + for (p=Pipes;p;p=next) { + next = p->next; + if (p->conn == conn) { + close_rpc_pipe_hnd(p); + } + } +} + +/**************************************************************************** + Close an rpc pipe. +****************************************************************************/ + +static int close_internal_rpc_pipe_hnd(struct pipes_struct *p) +{ + if (!p) { + DEBUG(0,("Invalid pipe in close_internal_rpc_pipe_hnd\n")); + return False; + } + + prs_mem_free(&p->out_data.rdata); + prs_mem_free(&p->in_data.data); + + if (p->auth.auth_data_free_func) { + (*p->auth.auth_data_free_func)(&p->auth); + } + + if (p->mem_ctx) { + talloc_destroy(p->mem_ctx); + } + + free_pipe_rpc_context( p->contexts ); + + /* Free the handles database. */ + close_policy_by_pipe(p); + + TALLOC_FREE(p->pipe_user.nt_user_token); + SAFE_FREE(p->pipe_user.ut.groups); + + DLIST_REMOVE(InternalPipes, p); ZERO_STRUCTP(p); - SAFE_FREE(p); + TALLOC_FREE(p); return True; } @@ -933,12 +1211,11 @@ BOOL close_rpc_pipe_hnd(pipes_struct *p, connection_struct *conn) Find an rpc pipe given a pipe handle in a buffer and an offset. ****************************************************************************/ -pipes_struct *get_rpc_pipe_p(char *buf, int where) +smb_np_struct *get_rpc_pipe_p(uint16 pnum) { - int pnum = SVAL(buf,where); - - if (chain_p) + if (chain_p) { return chain_p; + } return get_rpc_pipe(pnum); } @@ -947,15 +1224,16 @@ pipes_struct *get_rpc_pipe_p(char *buf, int where) Find an rpc pipe given a pipe handle. ****************************************************************************/ -pipes_struct *get_rpc_pipe(int pnum) +smb_np_struct *get_rpc_pipe(int pnum) { - pipes_struct *p; + smb_np_struct *p; DEBUG(4,("search for pipe pnum=%x\n", pnum)); - for (p=Pipes;p;p=p->next) + for (p=Pipes;p;p=p->next) { DEBUG(5,("pipe name %s pnum=%x (pipes_open=%d)\n", p->name, p->pnum, pipes_open)); + } for (p=Pipes;p;p=p->next) { if (p->pnum == pnum) {