tevent: call epoll_panic() if EPOLL_CTL_DEL failed
[Samba/gebeck_regimport.git] / source3 / printing / printspoolss.c
blobacf4c0d19afc26cb0fd16b8241cf6d537aac42b2
1 /*
2 Unix SMB/CIFS implementation.
3 Printing routines that bridge to spoolss
4 Copyright (C) Simo Sorce 2010
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.
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.
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/>.
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"
28 struct print_file_data {
29 char *svcname;
30 char *docname;
31 char *filename;
32 struct policy_handle handle;
33 uint32_t jobid;
34 uint16 rap_jobid;
37 uint16_t print_spool_rap_jobid(struct print_file_data *print_file)
39 if (print_file == NULL) {
40 return 0;
43 return print_file->rap_jobid;
46 void print_spool_terminate(struct connection_struct *conn,
47 struct print_file_data *print_file);
49 /***************************************************************************
50 * Open a Document over spoolss
51 ***************************************************************************/
53 #define DOCNAME_DEFAULT "Remote Downlevel Document"
54 #ifndef PRINT_SPOOL_PREFIX
55 #define PRINT_SPOOL_PREFIX "smbprn."
56 #endif
58 NTSTATUS print_spool_open(files_struct *fsp,
59 const char *fname,
60 uint64_t current_vuid)
62 NTSTATUS status;
63 TALLOC_CTX *tmp_ctx;
64 struct print_file_data *pf;
65 struct dcerpc_binding_handle *b = NULL;
66 struct spoolss_DevmodeContainer devmode_ctr;
67 struct spoolss_DocumentInfoCtr info_ctr;
68 struct spoolss_DocumentInfo1 *info1;
69 int fd = -1;
70 WERROR werr;
72 tmp_ctx = talloc_new(fsp);
73 if (!tmp_ctx) {
74 return NT_STATUS_NO_MEMORY;
77 pf = talloc_zero(fsp, struct print_file_data);
78 if (!pf) {
79 status = NT_STATUS_NO_MEMORY;
80 goto done;
82 pf->svcname = lp_servicename(pf, SNUM(fsp->conn));
84 /* the document name is derived from the file name.
85 * "Remote Downlevel Document" is added in front to
86 * mimic what windows does in this case */
87 pf->docname = talloc_strdup(pf, DOCNAME_DEFAULT);
88 if (!pf->docname) {
89 status = NT_STATUS_NO_MEMORY;
90 goto done;
92 if (fname) {
93 const char *p = strrchr(fname, '/');
94 if (!p) {
95 p = fname;
97 pf->docname = talloc_asprintf_append(pf->docname, " %s", p);
98 if (!pf->docname) {
99 status = NT_STATUS_NO_MEMORY;
100 goto done;
105 * Ok, now we have to open an actual file.
106 * Here is the reason:
107 * We want to write the spool job to this file in
108 * smbd for scalability reason (and also because
109 * apparently window printer drivers can seek when
110 * spooling to a file).
111 * So we first create a file, and then we pass it
112 * to spoolss in output_file so it can monitor and
113 * take over once we call EndDocPrinter().
114 * Of course we will not start writing until
115 * StartDocPrinter() actually gives the ok.
116 * smbd spooler files do not include a print jobid
117 * path component, as the jobid is only known after
118 * calling StartDocPrinter().
121 pf->filename = talloc_asprintf(pf, "%s/%sXXXXXX",
122 lp_pathname(talloc_tos(),
123 SNUM(fsp->conn)),
124 PRINT_SPOOL_PREFIX);
125 if (!pf->filename) {
126 status = NT_STATUS_NO_MEMORY;
127 goto done;
129 errno = 0;
130 fd = mkstemp(pf->filename);
131 if (fd == -1) {
132 if (errno == EACCES) {
133 /* Common setup error, force a report. */
134 DEBUG(0, ("Insufficient permissions "
135 "to open spool file %s.\n",
136 pf->filename));
137 } else {
138 /* Normal case, report at level 3 and above. */
139 DEBUG(3, ("can't open spool file %s,\n",
140 pf->filename));
141 DEBUGADD(3, ("errno = %d (%s).\n",
142 errno, strerror(errno)));
144 status = map_nt_error_from_unix(errno);
145 goto done;
148 /* now open a document over spoolss so that it does
149 * all printer verification, and eventually assigns
150 * a job id */
152 status = rpc_pipe_open_interface(fsp->conn,
153 &ndr_table_spoolss.syntax_id,
154 fsp->conn->session_info,
155 fsp->conn->sconn->remote_address,
156 fsp->conn->sconn->msg_ctx,
157 &fsp->conn->spoolss_pipe);
158 if (!NT_STATUS_IS_OK(status)) {
159 goto done;
161 b = fsp->conn->spoolss_pipe->binding_handle;
163 ZERO_STRUCT(devmode_ctr);
165 status = dcerpc_spoolss_OpenPrinter(b, pf, pf->svcname,
166 "RAW", devmode_ctr,
167 PRINTER_ACCESS_USE,
168 &pf->handle, &werr);
169 if (!NT_STATUS_IS_OK(status)) {
170 goto done;
172 if (!W_ERROR_IS_OK(werr)) {
173 status = werror_to_ntstatus(werr);
174 goto done;
177 info1 = talloc(tmp_ctx, struct spoolss_DocumentInfo1);
178 if (info1 == NULL) {
179 status = NT_STATUS_NO_MEMORY;
180 goto done;
182 info1->document_name = pf->docname;
183 info1->output_file = pf->filename;
184 info1->datatype = "RAW";
186 info_ctr.level = 1;
187 info_ctr.info.info1 = info1;
189 status = dcerpc_spoolss_StartDocPrinter(b, tmp_ctx,
190 &pf->handle,
191 &info_ctr,
192 &pf->jobid,
193 &werr);
194 if (!NT_STATUS_IS_OK(status)) {
195 goto done;
197 if (!W_ERROR_IS_OK(werr)) {
198 status = werror_to_ntstatus(werr);
199 goto done;
202 /* Convert to RAP id. */
203 pf->rap_jobid = pjobid_to_rap(pf->svcname, pf->jobid);
204 if (pf->rap_jobid == 0) {
205 /* No errno around here */
206 status = NT_STATUS_ACCESS_DENIED;
207 goto done;
210 /* setup a full fsp */
211 status = create_synthetic_smb_fname(fsp, pf->filename, NULL,
212 NULL, &fsp->fsp_name);
213 if (!NT_STATUS_IS_OK(status)) {
214 goto done;
217 if (sys_fstat(fd, &fsp->fsp_name->st, false) != 0) {
218 status = map_nt_error_from_unix(errno);
219 goto done;
222 fsp->file_id = vfs_file_id_from_sbuf(fsp->conn, &fsp->fsp_name->st);
223 fsp->fh->fd = fd;
225 fsp->vuid = current_vuid;
226 fsp->can_lock = false;
227 fsp->can_read = false;
228 fsp->access_mask = FILE_GENERIC_WRITE;
229 fsp->can_write = true;
230 fsp->modified = false;
231 fsp->oplock_type = NO_OPLOCK;
232 fsp->sent_oplock_break = NO_BREAK_SENT;
233 fsp->is_directory = false;
235 fsp->print_file = pf;
237 status = NT_STATUS_OK;
238 done:
239 if (!NT_STATUS_IS_OK(status)) {
240 if (fd != -1) {
241 close(fd);
242 if (fsp->print_file) {
243 unlink(fsp->print_file->filename);
246 /* We need to delete the job from spoolss too */
247 if (pf->jobid) {
248 print_spool_terminate(fsp->conn, pf);
251 talloc_free(tmp_ctx);
252 return status;
255 int print_spool_write(files_struct *fsp,
256 const char *data, uint32_t size,
257 off_t offset, uint32_t *written)
259 SMB_STRUCT_STAT st;
260 ssize_t n;
261 int ret;
263 *written = 0;
265 /* first of all stat file to find out if it is still there.
266 * spoolss may have deleted it to signal someone has killed
267 * the job through it's interface */
269 if (sys_fstat(fsp->fh->fd, &st, false) != 0) {
270 ret = errno;
271 DEBUG(3, ("printfile_offset: sys_fstat failed on %s (%s)\n",
272 fsp_str_dbg(fsp), strerror(ret)));
273 return ret;
276 /* check if the file is unlinked, this will signal spoolss has
277 * killed it, just return an error and close the file */
278 if (st.st_ex_nlink == 0) {
279 close(fsp->fh->fd);
280 return EBADF;
283 /* When print files go beyond 4GB, the 32-bit offset sent in
284 * old SMBwrite calls is relative to the current 4GB chunk
285 * we're writing to.
286 * Discovered by Sebastian Kloska <oncaphillis@snafu.de>.
288 if (offset < 0xffffffff00000000LL) {
289 offset = (st.st_ex_size & 0xffffffff00000000LL) + offset;
292 n = write_data_at_offset(fsp->fh->fd, data, size, offset);
293 if (n == -1) {
294 ret = errno;
295 print_spool_terminate(fsp->conn, fsp->print_file);
296 } else {
297 *written = n;
298 ret = 0;
301 return ret;
304 void print_spool_end(files_struct *fsp, enum file_close_type close_type)
306 NTSTATUS status;
307 WERROR werr;
308 struct dcerpc_binding_handle *b = NULL;
310 b = fsp->conn->spoolss_pipe->binding_handle;
312 switch (close_type) {
313 case NORMAL_CLOSE:
314 case SHUTDOWN_CLOSE:
315 /* this also automatically calls spoolss_EndDocPrinter */
316 status = dcerpc_spoolss_ClosePrinter(b, fsp->print_file,
317 &fsp->print_file->handle,
318 &werr);
319 if (!NT_STATUS_IS_OK(status) ||
320 !NT_STATUS_IS_OK(status = werror_to_ntstatus(werr))) {
321 DEBUG(3, ("Failed to close printer %s [%s]\n",
322 fsp->print_file->svcname, nt_errstr(status)));
324 break;
325 case ERROR_CLOSE:
326 print_spool_terminate(fsp->conn, fsp->print_file);
327 break;
332 void print_spool_terminate(struct connection_struct *conn,
333 struct print_file_data *print_file)
335 NTSTATUS status;
336 WERROR werr;
337 struct dcerpc_binding_handle *b = NULL;
339 rap_jobid_delete(print_file->svcname, print_file->jobid);
341 status = rpc_pipe_open_interface(conn,
342 &ndr_table_spoolss.syntax_id,
343 conn->session_info,
344 conn->sconn->remote_address,
345 conn->sconn->msg_ctx,
346 &conn->spoolss_pipe);
347 if (!NT_STATUS_IS_OK(status)) {
348 DEBUG(0, ("print_spool_terminate: "
349 "Failed to get spoolss pipe [%s]\n",
350 nt_errstr(status)));
351 return;
353 b = conn->spoolss_pipe->binding_handle;
355 status = dcerpc_spoolss_SetJob(b, print_file,
356 &print_file->handle,
357 print_file->jobid,
358 NULL, SPOOLSS_JOB_CONTROL_DELETE,
359 &werr);
360 if (!NT_STATUS_IS_OK(status) ||
361 !NT_STATUS_IS_OK(status = werror_to_ntstatus(werr))) {
362 DEBUG(3, ("Failed to delete job %d [%s]\n",
363 print_file->jobid, nt_errstr(status)));
364 return;
366 status = dcerpc_spoolss_ClosePrinter(b, print_file,
367 &print_file->handle,
368 &werr);
369 if (!NT_STATUS_IS_OK(status) ||
370 !NT_STATUS_IS_OK(status = werror_to_ntstatus(werr))) {
371 DEBUG(3, ("Failed to close printer %s [%s]\n",
372 print_file->svcname, nt_errstr(status)));
373 return;