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-rw-r--r--source3/printing/nt_printing.c60
-rw-r--r--source3/rpc_parse/parse_sec.c157
-rw-r--r--source3/rpc_server/srv_spoolss_nt.c304
3 files changed, 426 insertions, 95 deletions
diff --git a/source3/printing/nt_printing.c b/source3/printing/nt_printing.c
index 1c69467c20..c70a6891d4 100644
--- a/source3/printing/nt_printing.c
+++ b/source3/printing/nt_printing.c
@@ -2174,73 +2174,20 @@ BOOL get_specific_param(NT_PRINTER_INFO_LEVEL printer, uint32 level,
uint32 nt_printing_setsec(char *printername, SEC_DESC_BUF *secdesc_ctr)
{
- SEC_DESC_BUF *new_secdesc_ctr = NULL;
- SEC_DESC_BUF *old_secdesc_ctr = NULL;
- DOM_SID *owner_sid, *group_sid;
- SEC_ACL *dacl, *sacl;
- SEC_DESC *psd = NULL;
- size_t secdesc_size;
prs_struct ps;
TALLOC_CTX *mem_ctx = NULL;
fstring key;
- uint16 secdesc_type;
uint32 status;
mem_ctx = talloc_init();
if (mem_ctx == NULL) return False;
- /* Make a copy of the security descriptor so we can fill in bits
- that NT doesn't pass to us. Any pieces of the security descriptor
- that are NULL are not meant to change. */
-
- nt_printing_getsec(printername, &old_secdesc_ctr);
-
- secdesc_type = secdesc_ctr->sec->type;
-
- /* Copy over owner and group sids. There seems to be no flag for
- this so just check the pointer values. */
-
- owner_sid = secdesc_ctr->sec->owner_sid ?
- secdesc_ctr->sec->owner_sid :
- old_secdesc_ctr->sec->owner_sid;
-
- group_sid = secdesc_ctr->sec->grp_sid ?
- secdesc_ctr->sec->grp_sid :
- old_secdesc_ctr->sec->grp_sid;
-
- /* Ignore changes to the system ACL. This has the effect of making
- changes through the security tab audit button not sticking.
- Perhaps in future Samba could implement these settings somehow. */
-
- sacl = NULL;
- secdesc_type &= ~SEC_DESC_SACL_PRESENT;
-
- /* Copy across discretionary ACL */
-
- if (secdesc_type & SEC_DESC_DACL_PRESENT) {
- dacl = secdesc_ctr->sec->dacl;
- } else {
- dacl = old_secdesc_ctr->sec->dacl;
- secdesc_type |= SEC_DESC_DACL_PRESENT;
- }
-
- /* Create new security descriptor from bits */
-
- psd = make_sec_desc(secdesc_ctr->sec->revision, secdesc_type,
- owner_sid, group_sid, sacl, dacl, &secdesc_size);
-
- new_secdesc_ctr = make_sec_desc_buf(secdesc_size, psd);
-
- free_sec_desc(&psd);
- free_sec_desc_buf(&old_secdesc_ctr);
-
/* Store the security descriptor in a tdb */
- prs_init(&ps, (uint32)sec_desc_size(new_secdesc_ctr->sec) +
+ prs_init(&ps, (uint32)sec_desc_size(secdesc_ctr->sec) +
sizeof(SEC_DESC_BUF), 4, mem_ctx, MARSHALL);
- if (!sec_io_desc_buf("nt_printing_setsec", &new_secdesc_ctr,
- &ps, 1)) {
+ if (!sec_io_desc_buf("nt_printing_setsec", &secdesc_ctr, &ps, 1)) {
status = ERROR_INVALID_FUNCTION;
goto done;
}
@@ -2257,9 +2204,6 @@ uint32 nt_printing_setsec(char *printername, SEC_DESC_BUF *secdesc_ctr)
/* Free mallocated memory */
done:
- free_sec_desc_buf(&old_secdesc_ctr);
- free_sec_desc_buf(&new_secdesc_ctr);
-
prs_mem_free(&ps);
if (mem_ctx) talloc_destroy(mem_ctx);
diff --git a/source3/rpc_parse/parse_sec.c b/source3/rpc_parse/parse_sec.c
index 00a1532470..39ead58126 100644
--- a/source3/rpc_parse/parse_sec.c
+++ b/source3/rpc_parse/parse_sec.c
@@ -278,6 +278,163 @@ size_t sec_desc_size(SEC_DESC *psd)
}
/*******************************************************************
+ Compares two SEC_ACE structures
+********************************************************************/
+
+BOOL sec_ace_equal(SEC_ACE *s1, SEC_ACE *s2)
+{
+ /* Trivial case */
+
+ if (!s1 && !s2) return True;
+
+ /* Check top level stuff */
+
+ if (s1->type != s2->type || s1->flags != s2->flags ||
+ s1->info.mask != s2->info.mask) {
+ return False;
+ }
+
+ /* Check SID */
+
+ if (!sid_equal(&s1->sid, &s2->sid)) {
+ return False;
+ }
+
+ return True;
+}
+
+/*******************************************************************
+ Compares two SEC_ACL structures
+********************************************************************/
+
+BOOL sec_acl_equal(SEC_ACL *s1, SEC_ACL *s2)
+{
+ int i, j;
+
+ /* Trivial case */
+
+ if (!s1 && !s2) return True;
+
+ /* Check top level stuff */
+
+ if (s1->revision != s2->revision || s1->num_aces != s2->num_aces) {
+ return False;
+ }
+
+ /* The ACEs could be in any order so check each ACE in s1 against
+ each ACE in s2. */
+
+ for (i = 0; i < s1->num_aces; i++) {
+ BOOL found = False;
+
+ for (j = 0; j < s2->num_aces; j++) {
+ if (sec_ace_equal(&s1->ace[i], &s2->ace[j])) {
+ found = True;
+ break;
+ }
+ }
+
+ if (!found) return False;
+ }
+
+ return True;
+}
+
+/*******************************************************************
+ Compares two SEC_DESC structures
+********************************************************************/
+
+BOOL sec_desc_equal(SEC_DESC *s1, SEC_DESC *s2)
+{
+ /* Trivial case */
+
+ if (!s1 && !s2) return True;
+
+ /* Check top level stuff */
+
+ if (s1->revision != s2->revision || s1->type != s2->type) {
+ return False;
+ }
+
+ /* Check owner and group */
+
+ if (!sid_equal(s1->owner_sid, s2->owner_sid) ||
+ !sid_equal(s1->grp_sid, s2->grp_sid)) {
+ return False;
+ }
+
+ /* Check ACLs present in one but not the other */
+
+ if ((s1->dacl && !s2->dacl) || (!s1->dacl && s2->dacl) ||
+ (s1->sacl && !s2->sacl) || (!s1->sacl && s2->sacl)) {
+ return False;
+ }
+
+ /* Sigh - we have to do it the hard way by iterating over all
+ the ACEs in the ACLs */
+
+ if (!sec_acl_equal(s1->dacl, s2->dacl) ||
+ !sec_acl_equal(s1->sacl, s2->sacl)) {
+ return False;
+ }
+
+ return True;
+}
+
+/*******************************************************************
+ Merge part of security descriptor old_sec in to the empty sections of
+ security descriptor new_sec.
+********************************************************************/
+
+SEC_DESC_BUF *sec_desc_merge(SEC_DESC_BUF *new_sdb, SEC_DESC_BUF *old_sdb)
+{
+ DOM_SID *owner_sid, *group_sid;
+ SEC_DESC_BUF *return_sdb;
+ SEC_ACL *dacl, *sacl;
+ SEC_DESC *psd = NULL;
+ uint16 secdesc_type;
+ size_t secdesc_size;
+
+ /* Copy over owner and group sids. There seems to be no flag for
+ this so just check the pointer values. */
+
+ owner_sid = new_sdb->sec->owner_sid ? new_sdb->sec->owner_sid :
+ old_sdb->sec->owner_sid;
+
+ group_sid = new_sdb->sec->grp_sid ? new_sdb->sec->grp_sid :
+ old_sdb->sec->grp_sid;
+
+ secdesc_type = new_sdb->sec->type;
+
+ /* Ignore changes to the system ACL. This has the effect of making
+ changes through the security tab audit button not sticking.
+ Perhaps in future Samba could implement these settings somehow. */
+
+ sacl = NULL;
+ secdesc_type &= ~SEC_DESC_SACL_PRESENT;
+
+ /* Copy across discretionary ACL */
+
+ if (secdesc_type & SEC_DESC_DACL_PRESENT) {
+ dacl = new_sdb->sec->dacl;
+ } else {
+ dacl = old_sdb->sec->dacl;
+ secdesc_type |= SEC_DESC_DACL_PRESENT;
+ }
+
+ /* Create new security descriptor from bits */
+
+ psd = make_sec_desc(new_sdb->sec->revision, secdesc_type,
+ owner_sid, group_sid, sacl, dacl, &secdesc_size);
+
+ return_sdb = make_sec_desc_buf(secdesc_size, psd);
+
+ free_sec_desc(&psd);
+
+ return(return_sdb);
+}
+
+/*******************************************************************
Creates a SEC_DESC structure
********************************************************************/
diff --git a/source3/rpc_server/srv_spoolss_nt.c b/source3/rpc_server/srv_spoolss_nt.c
index a99874bfcd..9363829165 100644
--- a/source3/rpc_server/srv_spoolss_nt.c
+++ b/source3/rpc_server/srv_spoolss_nt.c
@@ -3325,7 +3325,7 @@ static uint32 control_printer(POLICY_HND *handle, uint32 command,
{
struct current_user user;
int snum;
- int errcode = 0;
+ int errcode = ERROR_INVALID_FUNCTION;
Printer_entry *Printer = find_printer_index_by_hnd(handle);
get_current_user(&user, p);
@@ -3335,35 +3335,29 @@ static uint32 control_printer(POLICY_HND *handle, uint32 command,
return ERROR_INVALID_HANDLE;
}
- if (!get_printer_snum(handle, &snum) )
+ if (!get_printer_snum(handle, &snum))
return ERROR_INVALID_HANDLE;
switch (command) {
case PRINTER_CONTROL_PAUSE:
if (print_queue_pause(&user, snum, &errcode)) {
- srv_spoolss_sendnotify(handle);
- return 0;
+ errcode = 0;
}
break;
case PRINTER_CONTROL_RESUME:
case PRINTER_CONTROL_UNPAUSE:
if (print_queue_resume(&user, snum, &errcode)) {
- srv_spoolss_sendnotify(handle);
- return 0;
+ errcode = 0;
}
break;
case PRINTER_CONTROL_PURGE:
if (print_queue_purge(&user, snum, &errcode)) {
- srv_spoolss_sendnotify(handle);
- return 0;
+ errcode = 0;
}
break;
}
- if (errcode)
- return (uint32)errcode;
-
- return ERROR_INVALID_FUNCTION;
+ return errcode;
}
/********************************************************************
@@ -3383,6 +3377,7 @@ static uint32 update_printer_sec(POLICY_HND *handle, uint32 level,
const SPOOL_PRINTER_INFO_LEVEL *info,
pipes_struct *p, SEC_DESC_BUF *secdesc_ctr)
{
+ SEC_DESC_BUF *new_secdesc_ctr = NULL, *old_secdesc_ctr = NULL;
struct current_user user;
uint32 result;
int snum;
@@ -3390,25 +3385,47 @@ static uint32 update_printer_sec(POLICY_HND *handle, uint32 level,
Printer_entry *Printer = find_printer_index_by_hnd(handle);
if (!OPEN_HANDLE(Printer) || !get_printer_snum(handle, &snum)) {
- DEBUG(0,("update_printer_sec: Invalid handle (%s)\n", OUR_HANDLE(handle)));
- return ERROR_INVALID_HANDLE;
+ DEBUG(0,("update_printer_sec: Invalid handle (%s)\n",
+ OUR_HANDLE(handle)));
+
+ result = ERROR_INVALID_HANDLE;
+ goto done;
+ }
+
+ /* NT seems to like setting the security descriptor even though
+ nothing may have actually changed. This causes annoying
+ dialog boxes when the user doesn't have permission to change
+ the security descriptor. */
+
+ nt_printing_getsec(Printer->dev.handlename, &old_secdesc_ctr);
+
+ new_secdesc_ctr = sec_desc_merge(secdesc_ctr, old_secdesc_ctr);
+
+ if (sec_desc_equal(new_secdesc_ctr->sec, old_secdesc_ctr->sec)) {
+ result = NT_STATUS_NO_PROBLEMO;
+ goto done;
}
/* Work out which user is performing the operation */
+
get_current_user(&user, p);
/* Check the user has permissions to change the security
descriptor. By experimentation with two NT machines, the user
requires Full Access to the printer to change security
information. */
+
if (!print_access_check(&user, snum, PRINTER_ACCESS_ADMINISTER)) {
result = ERROR_ACCESS_DENIED;
goto done;
}
- result = nt_printing_setsec(Printer->dev.handlename, secdesc_ctr);
+ result = nt_printing_setsec(Printer->dev.handlename, new_secdesc_ctr);
done:
+ free_sec_desc_buf(&new_secdesc_ctr);
+ free_sec_desc_buf(&old_secdesc_ctr);
+
return result;
}
@@ -3522,6 +3539,181 @@ static BOOL add_printer_hook(NT_PRINTER_INFO_LEVEL *printer)
return True;
}
+/* Return true if two devicemodes are equal */
+
+static BOOL nt_devicemode_equal(NT_DEVICEMODE *d1, NT_DEVICEMODE *d2)
+{
+ if (!strequal(d1->devicename, d2->devicename) ||
+ !strequal(d1->formname, d2->formname)) {
+ return False;
+ }
+
+ if (d1->specversion != d2->specversion ||
+ d1->driverversion != d2->driverversion ||
+ d1->size != d2->size ||
+ d1->driverextra != d2->driverextra ||
+ d1->orientation != d2->orientation ||
+ d1->papersize != d2->papersize ||
+ d1->paperlength != d2->paperlength ||
+ d1->paperwidth != d2->paperwidth ||
+ d1->scale != d2->scale ||
+ d1->copies != d2->copies ||
+ d1->defaultsource != d2->defaultsource ||
+ d1->printquality != d2->printquality ||
+ d1->color != d2->color ||
+ d1->duplex != d2->duplex ||
+ d1->yresolution != d2->yresolution ||
+ d1->ttoption != d2->ttoption ||
+ d1->collate != d2->collate ||
+ d1->logpixels != d2->logpixels) {
+ return False;
+ }
+
+ if (d1->fields != d2->fields ||
+ d1->bitsperpel != d2->bitsperpel ||
+ d1->pelswidth != d2->pelswidth ||
+ d1->pelsheight != d2->pelsheight ||
+ d1->displayflags != d2->displayflags ||
+ d1->displayfrequency != d2->displayfrequency ||
+ d1->icmmethod != d2->icmmethod ||
+ d1->icmintent != d2->icmintent ||
+ d1->mediatype != d2->mediatype ||
+ d1->dithertype != d2->dithertype ||
+ d1->reserved1 != d2->reserved1 ||
+ d1->reserved2 != d2->reserved2 ||
+ d1->panningwidth != d2->panningwidth ||
+ d1->panningheight != d2->panningheight) {
+ return False;
+ }
+
+ /* Not sure what to do about these fields */
+#if 0
+ uint8 *private;
+#endif
+
+ return True;
+}
+
+/* Return true if two NT_PRINTER_PARAM structures are equal */
+
+static BOOL nt_printer_param_equal(NT_PRINTER_PARAM *p1,
+ NT_PRINTER_PARAM *p2)
+{
+ if (!p1 && !p2) return True;
+
+ if ((!p1 && p2) || (p1 && !p2)) return False;
+
+ /* Compare lists of printer parameters */
+
+ while (p1) {
+ BOOL found = False;
+ NT_PRINTER_PARAM *q = p1;
+
+ /* Find the parameter in the second structure */
+
+ while(q) {
+
+ if (strequal(p1->value, q->value) &&
+ p1->type == q->type &&
+ p1->data_len == q->data_len &&
+ memcmp(p1->data, q->data, p1->data_len) == 0) {
+ found = True;
+ goto found_it;
+ }
+
+ q = q->next;
+ }
+
+ found_it:
+ if (!found) {
+ return False;
+ }
+
+ p1 = p1->next;
+ }
+
+ return True;
+}
+
+/********************************************************************
+ * Called by update_printer when trying to work out whether to
+ * actually update printer info.
+ ********************************************************************/
+
+static BOOL nt_printer_info_level_equal(NT_PRINTER_INFO_LEVEL *p1,
+ NT_PRINTER_INFO_LEVEL *p2)
+{
+ NT_PRINTER_INFO_LEVEL_2 *pi1, *pi2;
+
+ /* Trivial conditions */
+
+ if ((!p1 && !p2) || (!p1->info_2 && !p2->info_2)) {
+ return True;
+ }
+
+ if ((!p1 && p2) || (p1 && !p2) ||
+ (!p1->info_2 && p2->info_2) ||
+ (p1->info_2 && !p2->info_2)) {
+ return False;
+ }
+
+ /* Compare two nt_printer_info_level structures. Don't compare
+ status or cjobs as they seem to have something to do with the
+ printer queue. */
+
+ pi1 = p1->info_2;
+ pi2 = p2->info_2;
+
+ if (pi1->attributes != pi2->attributes ||
+ pi1->priority != pi2->priority ||
+ pi1->default_priority != pi2->default_priority ||
+ pi1->starttime != pi2->starttime ||
+ pi1->untiltime != pi2->untiltime ||
+ pi1->averageppm != pi2->averageppm) {
+ return False;
+ }
+
+ /* Yuck - don't check the printername or servername as the
+ add_a_printer() code plays games with them. You can't
+ change the printername or the sharename through this interface
+ in Samba. */
+
+ if (!strequal(pi1->sharename, pi2->sharename) ||
+ !strequal(pi1->portname, pi2->portname) ||
+ !strequal(pi1->drivername, pi2->drivername) ||
+ !strequal(pi1->comment, pi2->comment) ||
+ !strequal(pi1->location, pi2->location)) {
+ return False;
+ }
+
+ if (!nt_devicemode_equal(pi1->devmode, pi2->devmode)) {
+ return False;
+ }
+
+ if (!strequal(pi1->sepfile, pi2->sepfile) ||
+ !strequal(pi1->printprocessor, pi2->printprocessor) ||
+ !strequal(pi1->datatype, pi2->datatype) ||
+ !strequal(pi1->parameters, pi2->parameters)) {
+ return False;
+ }
+
+ if (!nt_printer_param_equal(pi1->specific, pi2->specific)) {
+ return False;
+ }
+
+ if (!sec_desc_equal(pi1->secdesc_buf->sec, pi2->secdesc_buf->sec)) {
+ return False;
+ }
+
+ if (pi1->changeid != pi2->changeid ||
+ pi1->c_setprinter != pi2->c_setprinter ||
+ pi1->setuptime != pi2->setuptime) {
+ return False;
+ }
+
+ return True;
+}
+
/********************************************************************
* called by spoolss_api_setprinter
* when updating a printer description
@@ -3532,7 +3724,7 @@ static uint32 update_printer(POLICY_HND *handle, uint32 level,
DEVICEMODE *devmode)
{
int snum;
- NT_PRINTER_INFO_LEVEL *printer = NULL;
+ NT_PRINTER_INFO_LEVEL *printer = NULL, *old_printer = NULL;
Printer_entry *Printer = find_printer_index_by_hnd(handle);
uint32 result;
@@ -3540,8 +3732,6 @@ static uint32 update_printer(POLICY_HND *handle, uint32 level,
result = NT_STATUS_NO_PROBLEMO;
- /* Check calling user has permission to update printer description */
-
if (level!=2) {
DEBUG(0,("Send a mail to samba@samba.org\n"));
DEBUGADD(0,("with the following message: update_printer: level!=2\n"));
@@ -3559,14 +3749,8 @@ static uint32 update_printer(POLICY_HND *handle, uint32 level,
goto done;
}
- if (!print_access_check(NULL, snum, PRINTER_ACCESS_ADMINISTER)) {
- DEBUG(3, ("printer property change denied by security "
- "descriptor\n"));
- result = ERROR_ACCESS_DENIED;
- goto done;
- }
-
- if(get_a_printer(&printer, 2, lp_servicename(snum)) != 0) {
+ if((get_a_printer(&printer, 2, lp_servicename(snum)) != 0) ||
+ (get_a_printer(&old_printer, 2, lp_servicename(snum)) != 0)) {
result = ERROR_INVALID_HANDLE;
goto done;
}
@@ -3602,21 +3786,42 @@ static uint32 update_printer(POLICY_HND *handle, uint32 level,
printer->info_2->devmode=NULL;
}
- /*
- * Do sanity check on the requested changes for Samba.
- */
+ /* Do sanity check on the requested changes for Samba */
if (!check_printer_ok(printer->info_2, snum)) {
result = ERROR_INVALID_PARAMETER;
goto done;
}
+ /* NT likes to call this function even though nothing has actually
+ changed. Check this so the user doesn't end up with an
+ annoying permission denied dialog box. */
+
+ if (nt_printer_info_level_equal(printer, old_printer)) {
+ DEBUG(3, ("printer info has not changed\n"));
+ result = NT_STATUS_NO_PROBLEMO;
+ goto done;
+ }
+
+ /* Check calling user has permission to update printer description */
+
+ if (!print_access_check(NULL, snum, PRINTER_ACCESS_ADMINISTER)) {
+ DEBUG(3, ("printer property change denied by security "
+ "descriptor\n"));
+ result = ERROR_ACCESS_DENIED;
+ goto done;
+ }
+
+ /* Call addprinter hook */
+
if (*lp_addprinter_cmd() )
if ( !add_printer_hook(printer) ) {
result = ERROR_ACCESS_DENIED;
goto done;
}
+ /* Update printer info */
+
if (add_a_printer(*printer, 2)!=0) {
/* I don't really know what to return here !!! */
result = ERROR_ACCESS_DENIED;
@@ -4988,14 +5193,13 @@ uint32 _spoolss_setprinterdata( POLICY_HND *handle,
uint32 numeric_data)
{
NT_PRINTER_INFO_LEVEL *printer = NULL;
- NT_PRINTER_PARAM *param = NULL;
+ NT_PRINTER_PARAM *param = NULL, old_param;
int snum=0;
uint32 status = 0x0;
Printer_entry *Printer=find_printer_index_by_hnd(handle);
DEBUG(5,("spoolss_setprinterdata\n"));
-
if (!OPEN_HANDLE(Printer)) {
DEBUG(0,("_spoolss_setprinterdata: Invalid handle (%s).\n", OUR_HANDLE(handle)));
return ERROR_INVALID_HANDLE;
@@ -5004,17 +5208,40 @@ uint32 _spoolss_setprinterdata( POLICY_HND *handle,
if (!get_printer_snum(handle, &snum))
return ERROR_INVALID_HANDLE;
- if (!print_access_check(NULL, snum, PRINTER_ACCESS_ADMINISTER)) {
- DEBUG(3, ("security descriptor change denied by existing "
- "security descriptor\n"));
- return ERROR_ACCESS_DENIED;
- }
-
status = get_a_printer(&printer, 2, lp_servicename(snum));
if (status != 0x0)
return ERROR_INVALID_NAME;
convert_specific_param(&param, value , type, data, real_len);
+
+ /* Check if we are making any changes or not. Return true if
+ nothing is actually changing. */
+
+ ZERO_STRUCT(old_param);
+
+ if (get_specific_param(*printer, 2, param->value, &old_param.data,
+ &old_param.type, &old_param.data_len)) {
+
+ if (param->type == old_param.type &&
+ param->data_len == old_param.data_len &&
+ memcmp(param->data, old_param.data,
+ old_param.data_len) == 0) {
+
+ DEBUG(3, ("setprinterdata hasn't changed\n"));
+ status = NT_STATUS_NO_PROBLEMO;
+ goto done;
+ }
+ }
+
+ /* Access check */
+
+ if (!print_access_check(NULL, snum, PRINTER_ACCESS_ADMINISTER)) {
+ DEBUG(3, ("security descriptor change denied by existing "
+ "security descriptor\n"));
+ status = ERROR_ACCESS_DENIED;
+ goto done;
+ }
+
unlink_specific_param_if_exist(printer->info_2, param);
if (!add_a_specific_param(printer->info_2, param))
@@ -5022,7 +5249,10 @@ uint32 _spoolss_setprinterdata( POLICY_HND *handle,
else
status = mod_a_printer(*printer, 2);
+ done:
free_a_printer(&printer, 2);
+ safe_free(old_param.data);
+
return status;
}
generated by cgit (git 2.34.1) at 2024-11-10 20:03:34 +0000