source: trunk/server/source3/printing/printspoolss.c@ 997

Last change on this file since 997 was 751, checked in by Silvan Scherrer, 13 years ago

Samba Server: updated trunk to 3.6.9
File size: 9.6 KB
Line 
1/*
2 Unix SMB/CIFS implementation.
3 Printing routines that bridge to spoolss
4 Copyright (C) Simo Sorce 2010
5
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 3 of the License, or
9 (at your option) any later version.
10
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
15
16 You should have received a copy of the GNU General Public License
17 along with this program. If not, see <http://www.gnu.org/licenses/>.
18*/
19
20#include "includes.h"
21#include "printing.h"
22#include "rpc_client/rpc_client.h"
23#include "../librpc/gen_ndr/ndr_spoolss_c.h"
24#include "rpc_server/rpc_ncacn_np.h"
25#include "smbd/globals.h"
26#include "../libcli/security/security.h"
27
28void print_spool_terminate(struct connection_struct *conn,
29 struct print_file_data *print_file);
30
31/***************************************************************************
32 * Open a Document over spoolss
33 ***************************************************************************/
34
35#define DOCNAME_DEFAULT "Remote Downlevel Document"
36#ifndef PRINT_SPOOL_PREFIX
37#define PRINT_SPOOL_PREFIX "smbprn."
38#endif
39
40NTSTATUS print_spool_open(files_struct *fsp,
41 const char *fname,
42 uint16_t current_vuid)
43{
44 NTSTATUS status;
45 TALLOC_CTX *tmp_ctx;
46 struct print_file_data *pf;
47 struct dcerpc_binding_handle *b = NULL;
48 struct spoolss_DevmodeContainer devmode_ctr;
49 union spoolss_DocumentInfo info;
50 int fd = -1;
51 WERROR werr;
52
53 tmp_ctx = talloc_new(fsp);
54 if (!tmp_ctx) {
55 return NT_STATUS_NO_MEMORY;
56 }
57
58 pf = talloc_zero(fsp, struct print_file_data);
59 if (!pf) {
60 status = NT_STATUS_NO_MEMORY;
61 goto done;
62 }
63 pf->svcname = talloc_strdup(pf, lp_servicename(SNUM(fsp->conn)));
64
65 /* the document name is derived from the file name.
66 * "Remote Downlevel Document" is added in front to
67 * mimic what windows does in this case */
68 pf->docname = talloc_strdup(pf, DOCNAME_DEFAULT);
69 if (!pf->docname) {
70 status = NT_STATUS_NO_MEMORY;
71 goto done;
72 }
73 if (fname) {
74 const char *p = strrchr(fname, '/');
75 if (!p) {
76 p = fname;
77 }
78 pf->docname = talloc_asprintf_append(pf->docname, " %s", p);
79 if (!pf->docname) {
80 status = NT_STATUS_NO_MEMORY;
81 goto done;
82 }
83 }
84
85 /*
86 * Ok, now we have to open an actual file.
87 * Here is the reason:
88 * We want to write the spool job to this file in
89 * smbd for scalability reason (and also because
90 * apparently window printer drivers can seek when
91 * spooling to a file).
92 * So we first create a file, and then we pass it
93 * to spoolss in output_file so it can monitor and
94 * take over once we call EndDocPrinter().
95 * Of course we will not start writing until
96 * StartDocPrinter() actually gives the ok.
97 * smbd spooler files do not include a print jobid
98 * path component, as the jobid is only known after
99 * calling StartDocPrinter().
100 */
101
102 pf->filename = talloc_asprintf(pf, "%s/%sXXXXXX",
103 lp_pathname(SNUM(fsp->conn)),
104 PRINT_SPOOL_PREFIX);
105 if (!pf->filename) {
106 status = NT_STATUS_NO_MEMORY;
107 goto done;
108 }
109 errno = 0;
110 fd = mkstemp(pf->filename);
111 if (fd == -1) {
112 if (errno == EACCES) {
113 /* Common setup error, force a report. */
114 DEBUG(0, ("Insufficient permissions "
115 "to open spool file %s.\n",
116 pf->filename));
117 } else {
118 /* Normal case, report at level 3 and above. */
119 DEBUG(3, ("can't open spool file %s,\n",
120 pf->filename));
121 DEBUGADD(3, ("errno = %d (%s).\n",
122 errno, strerror(errno)));
123 }
124 status = map_nt_error_from_unix(errno);
125 goto done;
126 }
127
128 /* now open a document over spoolss so that it does
129 * all printer verification, and eventually assigns
130 * a job id */
131
132 status = rpc_pipe_open_interface(fsp->conn,
133 &ndr_table_spoolss.syntax_id,
134 fsp->conn->session_info,
135 &fsp->conn->sconn->client_id,
136 fsp->conn->sconn->msg_ctx,
137 &fsp->conn->spoolss_pipe);
138 if (!NT_STATUS_IS_OK(status)) {
139 goto done;
140 }
141 b = fsp->conn->spoolss_pipe->binding_handle;
142
143 ZERO_STRUCT(devmode_ctr);
144
145 status = dcerpc_spoolss_OpenPrinter(b, pf, pf->svcname,
146 "RAW", devmode_ctr,
147 PRINTER_ACCESS_USE,
148 &pf->handle, &werr);
149 if (!NT_STATUS_IS_OK(status)) {
150 goto done;
151 }
152 if (!W_ERROR_IS_OK(werr)) {
153 status = werror_to_ntstatus(werr);
154 goto done;
155 }
156
157 info.info1 = talloc(tmp_ctx, struct spoolss_DocumentInfo1);
158 if (!info.info1) {
159 status = NT_STATUS_NO_MEMORY;
160 goto done;
161 }
162 info.info1->document_name = pf->docname;
163 info.info1->output_file = pf->filename;
164 info.info1->datatype = "RAW";
165
166 status = dcerpc_spoolss_StartDocPrinter(b, tmp_ctx, &pf->handle,
167 1, info, &pf->jobid, &werr);
168 if (!NT_STATUS_IS_OK(status)) {
169 goto done;
170 }
171 if (!W_ERROR_IS_OK(werr)) {
172 status = werror_to_ntstatus(werr);
173 goto done;
174 }
175
176 /* Convert to RAP id. */
177 pf->rap_jobid = pjobid_to_rap(pf->svcname, pf->jobid);
178 if (pf->rap_jobid == 0) {
179 /* No errno around here */
180 status = NT_STATUS_ACCESS_DENIED;
181 goto done;
182 }
183
184 /* setup a full fsp */
185 status = create_synthetic_smb_fname(fsp, pf->filename, NULL,
186 NULL, &fsp->fsp_name);
187 if (!NT_STATUS_IS_OK(status)) {
188 goto done;
189 }
190
191 if (sys_fstat(fd, &fsp->fsp_name->st, false) != 0) {
192 status = map_nt_error_from_unix(errno);
193 goto done;
194 }
195
196 fsp->file_id = vfs_file_id_from_sbuf(fsp->conn, &fsp->fsp_name->st);
197 fsp->mode = fsp->fsp_name->st.st_ex_mode;
198 fsp->fh->fd = fd;
199
200 fsp->vuid = current_vuid;
201 fsp->can_lock = false;
202 fsp->can_read = false;
203 fsp->access_mask = FILE_GENERIC_WRITE;
204 fsp->can_write = true;
205 fsp->modified = false;
206 fsp->oplock_type = NO_OPLOCK;
207 fsp->sent_oplock_break = NO_BREAK_SENT;
208 fsp->is_directory = false;
209
210 fsp->print_file = pf;
211
212 status = NT_STATUS_OK;
213done:
214 if (!NT_STATUS_IS_OK(status)) {
215 if (fd != -1) {
216 close(fd);
217 if (fsp->print_file) {
218 unlink(fsp->print_file->filename);
219 }
220 }
221 /* We need to delete the job from spoolss too */
222 if (pf->jobid) {
223 print_spool_terminate(fsp->conn, pf);
224 }
225 }
226 talloc_free(tmp_ctx);
227 return status;
228}
229
230int print_spool_write(files_struct *fsp,
231 const char *data, uint32_t size,
232 SMB_OFF_T offset, uint32_t *written)
233{
234 SMB_STRUCT_STAT st;
235 ssize_t n;
236 int ret;
237
238 *written = 0;
239
240 /* first of all stat file to find out if it is still there.
241 * spoolss may have deleted it to signal someone has killed
242 * the job through it's interface */
243
244 if (sys_fstat(fsp->fh->fd, &st, false) != 0) {
245 ret = errno;
246 DEBUG(3, ("printfile_offset: sys_fstat failed on %s (%s)\n",
247 fsp_str_dbg(fsp), strerror(ret)));
248 return ret;
249 }
250
251 /* check if the file is unlinked, this will signal spoolss has
252 * killed it, just return an error and close the file */
253 if (st.st_ex_nlink == 0) {
254 close(fsp->fh->fd);
255 return EBADF;
256 }
257
258 /* When print files go beyond 4GB, the 32-bit offset sent in
259 * old SMBwrite calls is relative to the current 4GB chunk
260 * we're writing to.
261 * Discovered by Sebastian Kloska <oncaphillis@snafu.de>.
262 */
263 if (offset < 0xffffffff00000000LL) {
264 offset = (st.st_ex_size & 0xffffffff00000000LL) + offset;
265 }
266
267 n = write_data_at_offset(fsp->fh->fd, data, size, offset);
268 if (n == -1) {
269 ret = errno;
270 print_spool_terminate(fsp->conn, fsp->print_file);
271 } else {
272 *written = n;
273 ret = 0;
274 }
275
276 return ret;
277}
278
279void print_spool_end(files_struct *fsp, enum file_close_type close_type)
280{
281 NTSTATUS status;
282 WERROR werr;
283 struct dcerpc_binding_handle *b = NULL;
284
285 b = fsp->conn->spoolss_pipe->binding_handle;
286
287 switch (close_type) {
288 case NORMAL_CLOSE:
289 case SHUTDOWN_CLOSE:
290 /* this also automatically calls spoolss_EndDocPrinter */
291 status = dcerpc_spoolss_ClosePrinter(b, fsp->print_file,
292 &fsp->print_file->handle,
293 &werr);
294 if (!NT_STATUS_IS_OK(status) ||
295 !NT_STATUS_IS_OK(status = werror_to_ntstatus(werr))) {
296 DEBUG(3, ("Failed to close printer %s [%s]\n",
297 fsp->print_file->svcname, nt_errstr(status)));
298 }
299 break;
300 case ERROR_CLOSE:
301 print_spool_terminate(fsp->conn, fsp->print_file);
302 break;
303 }
304}
305
306
307void print_spool_terminate(struct connection_struct *conn,
308 struct print_file_data *print_file)
309{
310 NTSTATUS status;
311 WERROR werr;
312 struct dcerpc_binding_handle *b = NULL;
313
314 rap_jobid_delete(print_file->svcname, print_file->jobid);
315
316 status = rpc_pipe_open_interface(conn,
317 &ndr_table_spoolss.syntax_id,
318 conn->session_info,
319 &conn->sconn->client_id,
320 conn->sconn->msg_ctx,
321 &conn->spoolss_pipe);
322 if (!NT_STATUS_IS_OK(status)) {
323 DEBUG(0, ("print_spool_terminate: "
324 "Failed to get spoolss pipe [%s]\n",
325 nt_errstr(status)));
326 return;
327 }
328 b = conn->spoolss_pipe->binding_handle;
329
330 status = dcerpc_spoolss_SetJob(b, print_file,
331 &print_file->handle,
332 print_file->jobid,
333 NULL, SPOOLSS_JOB_CONTROL_DELETE,
334 &werr);
335 if (!NT_STATUS_IS_OK(status) ||
336 !NT_STATUS_IS_OK(status = werror_to_ntstatus(werr))) {
337 DEBUG(3, ("Failed to delete job %d [%s]\n",
338 print_file->jobid, nt_errstr(status)));
339 return;
340 }
341 status = dcerpc_spoolss_ClosePrinter(b, print_file,
342 &print_file->handle,
343 &werr);
344 if (!NT_STATUS_IS_OK(status) ||
345 !NT_STATUS_IS_OK(status = werror_to_ntstatus(werr))) {
346 DEBUG(3, ("Failed to close printer %s [%s]\n",
347 print_file->svcname, nt_errstr(status)));
348 return;
349 }
350}
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