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s3-printing: return talloced print jobs
print_job_find() currently returns print jobs to callers via a statically allocated variable, this is particularly messy as the device mode is talloced under the static variable. This change adds or passes a talloc context to all callers, giving them ownership of the returned print job.
This commit is contained in:
David Disseldorp
parent
e1ddf8f0e4
commit
2f85c1fcf2
@ -195,7 +195,9 @@ bool print_notify_register_pid(int snum);
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bool print_notify_deregister_pid(int snum);
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bool print_job_exists(const char* sharename, uint32 jobid);
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char *print_job_fname(const char* sharename, uint32 jobid);
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struct spoolss_DeviceMode *print_job_devmode(const char* sharename, uint32 jobid);
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struct spoolss_DeviceMode *print_job_devmode(TALLOC_CTX *mem_ctx,
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const char *sharename,
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uint32 jobid);
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bool print_job_set_name(struct tevent_context *ev,
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struct messaging_context *msg_ctx,
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const char *sharename, uint32 jobid, const char *name);
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@ -380,6 +380,7 @@ done:
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unpack a pjob from a tdb buffer
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***********************************************************************/
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/* FIXME talloc ctx */
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static int unpack_pjob(uint8 *buf, int buflen, struct printjob *pjob)
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{
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int len = 0;
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@ -438,9 +439,11 @@ static int unpack_pjob(uint8 *buf, int buflen, struct printjob *pjob)
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Useful function to find a print job in the database.
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****************************************************************************/
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static struct printjob *print_job_find(const char *sharename, uint32 jobid)
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static struct printjob *print_job_find(TALLOC_CTX *mem_ctx,
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const char *sharename,
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uint32 jobid)
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{
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static struct printjob pjob;
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struct printjob *pjob;
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uint32_t tmp;
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TDB_DATA ret;
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struct tdb_print_db *pdb = get_print_db_byname(sharename);
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@ -456,27 +459,30 @@ static struct printjob *print_job_find(const char *sharename, uint32 jobid)
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release_print_db(pdb);
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if (!ret.dptr) {
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DEBUG(10,("print_job_find: failed to find jobid %u.\n", (unsigned int)jobid ));
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DEBUG(10, ("print_job_find: failed to find jobid %u.\n",
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jobid));
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return NULL;
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}
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talloc_free(pjob.devmode);
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ZERO_STRUCT( pjob );
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if ( unpack_pjob( ret.dptr, ret.dsize, &pjob ) == -1 ) {
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DEBUG(10,("print_job_find: failed to unpack jobid %u.\n", (unsigned int)jobid ));
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SAFE_FREE(ret.dptr);
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return NULL;
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pjob = talloc_zero(mem_ctx, struct printjob);
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if (pjob == NULL) {
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goto err_out;
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}
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SAFE_FREE(ret.dptr);
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if (unpack_pjob(ret.dptr, ret.dsize, pjob) == -1) {
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DEBUG(10, ("failed to unpack jobid %u.\n", jobid));
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talloc_free(pjob);
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pjob = NULL;
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goto err_out;
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}
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DEBUG(10,("print_job_find: returning system job %d for jobid %u.\n",
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(int)pjob.sysjob, (unsigned int)jobid ));
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SMB_ASSERT(pjob.jobid == jobid);
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pjob->sysjob, jobid));
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SMB_ASSERT(pjob->jobid == jobid);
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return &pjob;
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err_out:
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SAFE_FREE(ret.dptr);
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return pjob;
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}
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/* Convert a unix jobid to a smb jobid */
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@ -847,19 +853,21 @@ static void pjob_delete(struct tevent_context *ev,
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struct printjob *pjob;
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uint32 job_status = 0;
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struct tdb_print_db *pdb;
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TALLOC_CTX *tmp_ctx = talloc_new(ev);
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if (tmp_ctx == NULL) {
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return;
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}
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pdb = get_print_db_byname(sharename);
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if (!pdb) {
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goto err_out;
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}
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if (!pdb)
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return;
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pjob = print_job_find( sharename, jobid );
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pjob = print_job_find(tmp_ctx, sharename, jobid);
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if (!pjob) {
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DEBUG(5, ("pjob_delete: we were asked to delete nonexistent job %u\n",
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(unsigned int)jobid));
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release_print_db(pdb);
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return;
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DEBUG(5, ("we were asked to delete nonexistent job %u\n",
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jobid));
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goto err_release;
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}
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/* We must cycle through JOB_STATUS_DELETING and
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@ -873,8 +881,11 @@ static void pjob_delete(struct tevent_context *ev,
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tdb_delete(pdb->tdb, print_key(jobid, &tmp));
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remove_from_jobs_added(sharename, jobid);
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release_print_db( pdb );
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rap_jobid_delete(sharename, jobid);
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err_release:
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release_print_db(pdb);
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err_out:
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talloc_free(tmp_ctx);
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}
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/****************************************************************************
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@ -887,13 +898,18 @@ static void print_unix_job(struct tevent_context *ev,
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uint32 jobid)
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{
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struct printjob pj, *old_pj;
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TALLOC_CTX *tmp_ctx = talloc_new(ev);
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if (tmp_ctx == NULL) {
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return;
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}
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if (jobid == (uint32)-1)
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if (jobid == (uint32)-1) {
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jobid = q->sysjob + UNIX_JOB_START;
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}
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/* Preserve the timestamp on an existing unix print job */
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old_pj = print_job_find(sharename, jobid);
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old_pj = print_job_find(tmp_ctx, sharename, jobid);
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ZERO_STRUCT(pj);
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@ -917,6 +933,7 @@ static void print_unix_job(struct tevent_context *ev,
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fstrcpy(pj.queuename, old_pj ? old_pj->queuename : sharename );
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pjob_store(ev, msg_ctx, sharename, jobid, &pj);
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talloc_free(tmp_ctx);
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}
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@ -1348,8 +1365,9 @@ static void print_queue_update_internal(struct tevent_context *ev,
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TDB_DATA jcdata;
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fstring keystr, cachestr;
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struct tdb_print_db *pdb = get_print_db_byname(sharename);
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TALLOC_CTX *tmp_ctx = talloc_new(ev);
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if (!pdb) {
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if ((pdb == NULL) || (tmp_ctx == NULL)) {
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return;
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}
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@ -1390,7 +1408,6 @@ static void print_queue_update_internal(struct tevent_context *ev,
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fill in any system job numbers as we go
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*/
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jcdata = get_jobs_added_data(pdb);
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for (i=0; i<qcount; i++) {
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@ -1403,7 +1420,7 @@ static void print_queue_update_internal(struct tevent_context *ev,
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}
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/* we have an active SMB print job - update its status */
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pjob = print_job_find(sharename, jobid);
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pjob = print_job_find(tmp_ctx, sharename, jobid);
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if (!pjob) {
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/* err, somethings wrong. Probably smbd was restarted
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with jobs in the queue. All we can do is treat them
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@ -1426,6 +1443,7 @@ static void print_queue_update_internal(struct tevent_context *ev,
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}
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SAFE_FREE(jcdata.dptr);
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talloc_free(tmp_ctx);
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/* now delete any queued entries that don't appear in the
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system queue */
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@ -1954,7 +1972,7 @@ bool print_job_exists(const char* sharename, uint32 jobid)
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char *print_job_fname(const char* sharename, uint32 jobid)
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{
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struct printjob *pjob = print_job_find(sharename, jobid);
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struct printjob *pjob = print_job_find(NULL, sharename, jobid);
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if (!pjob || pjob->spooled || pjob->pid != getpid())
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return NULL;
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return pjob->filename;
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@ -1967,12 +1985,14 @@ char *print_job_fname(const char* sharename, uint32 jobid)
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has not been spooled.
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****************************************************************************/
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struct spoolss_DeviceMode *print_job_devmode(const char* sharename, uint32 jobid)
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struct spoolss_DeviceMode *print_job_devmode(TALLOC_CTX *mem_ctx,
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const char *sharename,
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uint32 jobid)
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{
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struct printjob *pjob = print_job_find(sharename, jobid);
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if ( !pjob )
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struct printjob *pjob = print_job_find(mem_ctx, sharename, jobid);
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if (pjob == NULL) {
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return NULL;
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}
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return pjob->devmode;
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}
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@ -1986,13 +2006,23 @@ bool print_job_set_name(struct tevent_context *ev,
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const char *sharename, uint32 jobid, const char *name)
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{
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struct printjob *pjob;
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bool ret;
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TALLOC_CTX *tmp_ctx = talloc_new(ev);
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if (tmp_ctx == NULL) {
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return false;
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}
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pjob = print_job_find(sharename, jobid);
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if (!pjob || pjob->pid != getpid())
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return False;
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pjob = print_job_find(tmp_ctx, sharename, jobid);
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if (!pjob || pjob->pid != getpid()) {
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ret = false;
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goto err_out;
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}
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fstrcpy(pjob->jobname, name);
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return pjob_store(ev, msg_ctx, sharename, jobid, pjob);
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ret = pjob_store(ev, msg_ctx, sharename, jobid, pjob);
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err_out:
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talloc_free(tmp_ctx);
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return ret;
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}
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/****************************************************************************
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@ -2003,17 +2033,12 @@ bool print_job_get_name(TALLOC_CTX *mem_ctx, const char *sharename, uint32_t job
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{
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struct printjob *pjob;
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pjob = print_job_find(sharename, jobid);
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pjob = print_job_find(mem_ctx, sharename, jobid);
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if (!pjob || pjob->pid != getpid()) {
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return false;
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}
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*name = talloc_strdup(mem_ctx, pjob->jobname);
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if (!*name) {
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return false;
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}
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return true;
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return pjob->jobname;
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}
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@ -2085,19 +2110,29 @@ static bool print_job_delete1(struct tevent_context *ev,
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int snum, uint32 jobid)
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{
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const char* sharename = lp_const_servicename(snum);
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struct printjob *pjob = print_job_find(sharename, jobid);
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struct printjob *pjob;
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int result = 0;
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struct printif *current_printif = get_printer_fns( snum );
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bool ret;
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TALLOC_CTX *tmp_ctx = talloc_new(ev);
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if (tmp_ctx == NULL) {
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return false;
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}
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if (!pjob)
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return False;
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pjob = print_job_find(tmp_ctx, sharename, jobid);
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if (!pjob) {
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ret = false;
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goto err_out;
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}
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/*
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* If already deleting just return.
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*/
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if (pjob->status == LPQ_DELETING)
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return True;
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if (pjob->status == LPQ_DELETING) {
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ret = true;
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goto err_out;
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}
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/* Hrm - we need to be able to cope with deleting a job before it
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has reached the spooler. Just mark it as LPQ_DELETING and
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@ -2127,8 +2162,10 @@ static bool print_job_delete1(struct tevent_context *ev,
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struct tdb_print_db *pdb = get_print_db_byname(sharename);
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int njobs = 1;
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if (!pdb)
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return False;
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if (!pdb) {
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ret = false;
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goto err_out;
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}
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pjob_delete(ev, msg_ctx, sharename, jobid);
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/* Ensure we keep a rough count of the number of total jobs... */
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tdb_change_int32_atomic(pdb->tdb, "INFO/total_jobs", &njobs, -1);
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@ -2138,7 +2175,10 @@ static bool print_job_delete1(struct tevent_context *ev,
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remove_from_jobs_added( sharename, jobid );
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return (result == 0);
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ret = (result == 0);
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err_out:
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talloc_free(tmp_ctx);
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return ret;
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}
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/****************************************************************************
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@ -2149,12 +2189,23 @@ static bool is_owner(const struct auth_session_info *server_info,
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const char *servicename,
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uint32 jobid)
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{
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struct printjob *pjob = print_job_find(servicename, jobid);
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struct printjob *pjob;
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bool ret;
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TALLOC_CTX *tmp_ctx = talloc_new(server_info);
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if (tmp_ctx == NULL) {
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return false;
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}
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if (!pjob || !server_info)
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return False;
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pjob = print_job_find(tmp_ctx, servicename, jobid);
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if (!pjob || !server_info) {
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ret = false;
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goto err_out;
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}
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return strequal(pjob->user, server_info->unix_info->sanitized_username);
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ret = strequal(pjob->user, server_info->unix_info->sanitized_username);
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err_out:
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talloc_free(tmp_ctx);
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return ret;
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}
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/****************************************************************************
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@ -2168,7 +2219,11 @@ WERROR print_job_delete(const struct auth_session_info *server_info,
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const char* sharename = lp_const_servicename(snum);
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struct printjob *pjob;
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bool owner;
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char *fname;
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WERROR werr;
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TALLOC_CTX *tmp_ctx = talloc_new(msg_ctx);
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if (tmp_ctx == NULL) {
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return WERR_NOT_ENOUGH_MEMORY;
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}
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owner = is_owner(server_info, lp_const_servicename(snum), jobid);
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@ -2188,7 +2243,8 @@ pause, or resume print job. User name: %s. Printer name: %s.",
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lp_printername(snum) );
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/* END_ADMIN_LOG */
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return WERR_ACCESS_DENIED;
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werr = WERR_ACCESS_DENIED;
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goto err_out;
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}
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/*
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@ -2198,18 +2254,20 @@ pause, or resume print job. User name: %s. Printer name: %s.",
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* spool file & return.
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*/
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fname = print_job_fname(sharename, jobid);
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if (fname != NULL) {
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/* remove the spool file */
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DEBUG(10, ("print_job_delete: "
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"Removing spool file [%s]\n", fname));
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if (unlink(fname) == -1) {
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return map_werror_from_unix(errno);
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pjob = print_job_find(tmp_ctx, sharename, jobid);
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if (!pjob || pjob->spooled || pjob->pid != getpid()) {
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DEBUG(10, ("Skipping spool file removal for job %u\n", jobid));
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} else {
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DEBUG(10, ("Removing spool file [%s]\n", pjob->filename));
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if (unlink(pjob->filename) == -1) {
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werr = map_werror_from_unix(errno);
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goto err_out;
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}
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}
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if (!print_job_delete1(server_event_context(), msg_ctx, snum, jobid)) {
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return WERR_ACCESS_DENIED;
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werr = WERR_ACCESS_DENIED;
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goto err_out;
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}
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/* force update the database and say the delete failed if the
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@ -2217,12 +2275,16 @@ pause, or resume print job. User name: %s. Printer name: %s.",
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print_queue_update(msg_ctx, snum, True);
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pjob = print_job_find(sharename, jobid);
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pjob = print_job_find(tmp_ctx, sharename, jobid);
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if (pjob && (pjob->status != LPQ_DELETING)) {
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return WERR_ACCESS_DENIED;
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werr = WERR_ACCESS_DENIED;
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goto err_out;
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}
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werr = WERR_PRINTER_HAS_JOBS_QUEUED;
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return WERR_PRINTER_HAS_JOBS_QUEUED;
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err_out:
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talloc_free(tmp_ctx);
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return werr;
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}
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/****************************************************************************
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@ -2238,9 +2300,12 @@ WERROR print_job_pause(const struct auth_session_info *server_info,
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int ret = -1;
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struct printif *current_printif = get_printer_fns( snum );
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WERROR werr;
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TALLOC_CTX *tmp_ctx = talloc_new(msg_ctx);
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if (tmp_ctx == NULL) {
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return WERR_NOT_ENOUGH_MEMORY;
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}
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pjob = print_job_find(sharename, jobid);
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pjob = print_job_find(tmp_ctx, sharename, jobid);
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if (!pjob || !server_info) {
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DEBUG(10, ("print_job_pause: no pjob or user for jobid %u\n",
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(unsigned int)jobid ));
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@ -2291,6 +2356,7 @@ pause, or resume print job. User name: %s. Printer name: %s.",
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/* how do we tell if this succeeded? */
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werr = WERR_OK;
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err_out:
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talloc_free(tmp_ctx);
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return werr;
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}
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|
||||
@ -2307,9 +2373,11 @@ WERROR print_job_resume(const struct auth_session_info *server_info,
|
||||
int ret;
|
||||
struct printif *current_printif = get_printer_fns( snum );
|
||||
WERROR werr;
|
||||
TALLOC_CTX *tmp_ctx = talloc_new(msg_ctx);
|
||||
if (tmp_ctx == NULL)
|
||||
return WERR_NOT_ENOUGH_MEMORY;
|
||||
|
||||
pjob = print_job_find(sharename, jobid);
|
||||
|
||||
pjob = print_job_find(tmp_ctx, sharename, jobid);
|
||||
if (!pjob || !server_info) {
|
||||
DEBUG(10, ("print_job_resume: no pjob or user for jobid %u\n",
|
||||
(unsigned int)jobid ));
|
||||
@ -2357,6 +2425,7 @@ pause, or resume print job. User name: %s. Printer name: %s.",
|
||||
|
||||
werr = WERR_OK;
|
||||
err_out:
|
||||
talloc_free(tmp_ctx);
|
||||
return werr;
|
||||
}
|
||||
|
||||
@ -2371,26 +2440,36 @@ ssize_t print_job_write(struct tevent_context *ev,
|
||||
const char* sharename = lp_const_servicename(snum);
|
||||
ssize_t return_code;
|
||||
struct printjob *pjob;
|
||||
|
||||
pjob = print_job_find(sharename, jobid);
|
||||
|
||||
if (!pjob)
|
||||
return -1;
|
||||
/* don't allow another process to get this info - it is meaningless */
|
||||
if (pjob->pid != getpid())
|
||||
return -1;
|
||||
|
||||
/* if SMBD is spooling this can't be allowed */
|
||||
if (pjob->status == PJOB_SMBD_SPOOLING) {
|
||||
TALLOC_CTX *tmp_ctx = talloc_new(ev);
|
||||
if (tmp_ctx == NULL) {
|
||||
return -1;
|
||||
}
|
||||
|
||||
return_code = write_data(pjob->fd, buf, size);
|
||||
pjob = print_job_find(tmp_ctx, sharename, jobid);
|
||||
if (!pjob) {
|
||||
return_code = -1;
|
||||
goto err_out;
|
||||
}
|
||||
|
||||
/* don't allow another process to get this info - it is meaningless */
|
||||
if (pjob->pid != getpid()) {
|
||||
return_code = -1;
|
||||
goto err_out;
|
||||
}
|
||||
|
||||
/* if SMBD is spooling this can't be allowed */
|
||||
if (pjob->status == PJOB_SMBD_SPOOLING) {
|
||||
return_code = -1;
|
||||
goto err_out;
|
||||
}
|
||||
|
||||
return_code = write_data(pjob->fd, buf, size);
|
||||
if (return_code > 0) {
|
||||
pjob->size += size;
|
||||
pjob_store(ev, msg_ctx, sharename, jobid, pjob);
|
||||
}
|
||||
err_out:
|
||||
talloc_free(tmp_ctx);
|
||||
return return_code;
|
||||
}
|
||||
|
||||
@ -2800,16 +2879,24 @@ void print_job_endpage(struct messaging_context *msg_ctx,
|
||||
{
|
||||
const char* sharename = lp_const_servicename(snum);
|
||||
struct printjob *pjob;
|
||||
TALLOC_CTX *tmp_ctx = talloc_new(msg_ctx);
|
||||
if (tmp_ctx == NULL) {
|
||||
return;
|
||||
}
|
||||
|
||||
pjob = print_job_find(sharename, jobid);
|
||||
if (!pjob)
|
||||
return;
|
||||
pjob = print_job_find(tmp_ctx, sharename, jobid);
|
||||
if (!pjob) {
|
||||
goto err_out;
|
||||
}
|
||||
/* don't allow another process to get this info - it is meaningless */
|
||||
if (pjob->pid != getpid())
|
||||
return;
|
||||
if (pjob->pid != getpid()) {
|
||||
goto err_out;
|
||||
}
|
||||
|
||||
pjob->page_count++;
|
||||
pjob_store(server_event_context(), msg_ctx, sharename, jobid, pjob);
|
||||
err_out:
|
||||
talloc_free(tmp_ctx);
|
||||
}
|
||||
|
||||
/****************************************************************************
|
||||
@ -2827,15 +2914,20 @@ NTSTATUS print_job_end(struct messaging_context *msg_ctx, int snum,
|
||||
SMB_STRUCT_STAT sbuf;
|
||||
struct printif *current_printif = get_printer_fns(snum);
|
||||
NTSTATUS status = NT_STATUS_UNSUCCESSFUL;
|
||||
TALLOC_CTX *tmp_ctx = talloc_new(msg_ctx);
|
||||
if (tmp_ctx == NULL) {
|
||||
return NT_STATUS_NO_MEMORY;
|
||||
}
|
||||
|
||||
pjob = print_job_find(sharename, jobid);
|
||||
|
||||
pjob = print_job_find(tmp_ctx, sharename, jobid);
|
||||
if (!pjob) {
|
||||
return NT_STATUS_PRINT_CANCELLED;
|
||||
status = NT_STATUS_PRINT_CANCELLED;
|
||||
goto err_out;
|
||||
}
|
||||
|
||||
if (pjob->spooled || pjob->pid != getpid()) {
|
||||
return NT_STATUS_ACCESS_DENIED;
|
||||
status = NT_STATUS_ACCESS_DENIED;
|
||||
goto err_out;
|
||||
}
|
||||
|
||||
if (close_type == NORMAL_CLOSE || close_type == SHUTDOWN_CLOSE) {
|
||||
@ -2915,6 +3007,8 @@ fail:
|
||||
pjob->fd = -1;
|
||||
unlink(pjob->filename);
|
||||
pjob_delete(server_event_context(), msg_ctx, sharename, jobid);
|
||||
err_out:
|
||||
talloc_free(tmp_ctx);
|
||||
return status;
|
||||
}
|
||||
|
||||
@ -2937,6 +3031,10 @@ static bool get_stored_queue_info(struct messaging_context *msg_ctx,
|
||||
int max_reported_jobs = lp_max_reported_jobs(snum);
|
||||
bool ret = False;
|
||||
const char* sharename = lp_servicename(snum);
|
||||
TALLOC_CTX *tmp_ctx = talloc_new(msg_ctx);
|
||||
if (tmp_ctx == NULL) {
|
||||
return false;
|
||||
}
|
||||
|
||||
/* make sure the database is up to date */
|
||||
if (print_cache_expired(lp_const_servicename(snum), True))
|
||||
@ -3003,7 +3101,7 @@ static bool get_stored_queue_info(struct messaging_context *msg_ctx,
|
||||
|
||||
jobid = IVAL(cgdata.dptr, i*4);
|
||||
DEBUG(5,("get_stored_queue_info: added job = %u\n", (unsigned int)jobid));
|
||||
pjob = print_job_find(lp_const_servicename(snum), jobid);
|
||||
pjob = print_job_find(tmp_ctx, lp_const_servicename(snum), jobid);
|
||||
if (!pjob) {
|
||||
DEBUG(5,("get_stored_queue_info: failed to find added job = %u\n", (unsigned int)jobid));
|
||||
remove_from_jobs_added(sharename, jobid);
|
||||
@ -3019,6 +3117,7 @@ static bool get_stored_queue_info(struct messaging_context *msg_ctx,
|
||||
fstrcpy(queue[total_count].fs_user, pjob->user);
|
||||
fstrcpy(queue[total_count].fs_file, pjob->jobname);
|
||||
total_count++;
|
||||
talloc_free(pjob);
|
||||
}
|
||||
|
||||
/* Update the changed jobids. */
|
||||
@ -3040,7 +3139,7 @@ static bool get_stored_queue_info(struct messaging_context *msg_ctx,
|
||||
DEBUG(5,("get_stored_queue_info: changed job: %u\n",
|
||||
(unsigned int) jobid));
|
||||
|
||||
pjob = print_job_find(sharename, jobid);
|
||||
pjob = print_job_find(tmp_ctx, sharename, jobid);
|
||||
if (pjob == NULL) {
|
||||
DEBUG(5,("get_stored_queue_info: failed to find "
|
||||
"changed job = %u\n",
|
||||
@ -3057,6 +3156,7 @@ static bool get_stored_queue_info(struct messaging_context *msg_ctx,
|
||||
queue[j].time = pjob->starttime;
|
||||
fstrcpy(queue[j].fs_user, pjob->user);
|
||||
fstrcpy(queue[j].fs_file, pjob->jobname);
|
||||
talloc_free(pjob);
|
||||
|
||||
DEBUG(5,("get_stored_queue_info: updated queue[%u], jobid: %u, jobname: %s\n",
|
||||
(unsigned int) j, (unsigned int) jobid, pjob->jobname));
|
||||
@ -3084,6 +3184,7 @@ static bool get_stored_queue_info(struct messaging_context *msg_ctx,
|
||||
|
||||
SAFE_FREE(data.dptr);
|
||||
SAFE_FREE(cgdata.dptr);
|
||||
talloc_free(tmp_ctx);
|
||||
return ret;
|
||||
}
|
||||
|
||||
|
||||
Loading…
Reference in New Issue
Block a user