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-rw-r--r--source3/printing/nt_printing.c131
-rw-r--r--source3/rpc_parse/parse_prs.c3
2 files changed, 108 insertions, 26 deletions
diff --git a/source3/printing/nt_printing.c b/source3/printing/nt_printing.c
index 79061ebd41..6b9a46070b 100644
--- a/source3/printing/nt_printing.c
+++ b/source3/printing/nt_printing.c
@@ -250,7 +250,7 @@ static TDB_DATA make_printer_tdbkey( const char *sharename )
generate a new TDB_DATA key for storing a printer security descriptor
****************************************************************************/
-static char* make_printers_secdesc_tdbkey( const char* sharename )
+static char *make_printers_secdesc_tdbkey( const char* sharename )
{
fstring share;
static pstring keystr;
@@ -346,32 +346,41 @@ static int sec_desc_upg_fn( TDB_CONTEXT *the_tdb, TDB_DATA key,
size_t size_new_sec;
DOM_SID sid;
- if (!data.dptr || data.dsize == 0)
+ if (!data.dptr || data.dsize == 0) {
return 0;
+ }
- if ( strncmp( key.dptr, SECDESC_PREFIX, strlen(SECDESC_PREFIX) ) != 0 )
+ if ( strncmp( key.dptr, SECDESC_PREFIX, strlen(SECDESC_PREFIX) ) != 0 ) {
return 0;
+ }
/* upgrade the security descriptor */
ZERO_STRUCT( ps );
prs_init( &ps, 0, ctx, UNMARSHALL );
- prs_give_memory( &ps, data.dptr, data.dsize, True );
+ prs_give_memory( &ps, data.dptr, data.dsize, False );
if ( !sec_io_desc_buf( "sec_desc_upg_fn", &sd_orig, &ps, 1 ) ) {
/* delete bad entries */
DEBUG(0,("sec_desc_upg_fn: Failed to parse original sec_desc for %si. Deleting....\n", key.dptr ));
tdb_delete( tdb_printers, key );
+ prs_mem_free( &ps );
return 0;
}
+ if (!sd_orig) {
+ prs_mem_free( &ps );
+ return 0;
+ }
sec = sd_orig->sec;
/* is this even valid? */
- if ( !sec->dacl )
+ if ( !sec->dacl ) {
+ prs_mem_free( &ps );
return 0;
+ }
/* update access masks */
@@ -399,13 +408,24 @@ static int sec_desc_upg_fn( TDB_CONTEXT *the_tdb, TDB_DATA key,
new_sec = make_sec_desc( ctx, SEC_DESC_REVISION, SEC_DESC_SELF_RELATIVE,
&sid, &sid,
NULL, NULL, &size_new_sec );
+ if (!new_sec) {
+ prs_mem_free( &ps );
+ return 0;
+ }
sd_new = make_sec_desc_buf( ctx, size_new_sec, new_sec );
+ if (!sd_new) {
+ prs_mem_free( &ps );
+ return 0;
+ }
if ( !(sd_store = sec_desc_merge( ctx, sd_new, sd_orig )) ) {
DEBUG(0,("sec_desc_upg_fn: Failed to update sec_desc for %s\n", key.dptr ));
+ prs_mem_free( &ps );
return 0;
}
+ prs_mem_free( &ps );
+
/* store it back */
sd_size = sec_desc_size(sd_store->sec) + sizeof(SEC_DESC_BUF);
@@ -413,6 +433,7 @@ static int sec_desc_upg_fn( TDB_CONTEXT *the_tdb, TDB_DATA key,
if ( !sec_io_desc_buf( "sec_desc_upg_fn", &sd_store, &ps, 1 ) ) {
DEBUG(0,("sec_desc_upg_fn: Failed to parse new sec_desc for %s\n", key.dptr ));
+ prs_mem_free( &ps );
return 0;
}
@@ -943,6 +964,10 @@ int get_ntdrivers(fstring **list, const char *architecture, uint32 version)
TDB_DATA kbuf, newkey;
short_archi = get_short_archi(architecture);
+ if (!short_archi) {
+ return 0;
+ }
+
slprintf(key, sizeof(key)-1, "%s%s/%d/", DRIVERS_PREFIX, short_archi, version);
for (kbuf = tdb_firstkey(tdb_drivers);
@@ -965,9 +990,10 @@ int get_ntdrivers(fstring **list, const char *architecture, uint32 version)
}
/****************************************************************************
-function to do the mapping between the long architecture name and
-the short one.
+ Function to do the mapping between the long architecture name and
+ the short one.
****************************************************************************/
+
const char *get_short_archi(const char *long_archi)
{
int i=-1;
@@ -985,7 +1011,6 @@ const char *get_short_archi(const char *long_archi)
/* this might be client code - but shouldn't this be an fstrcpy etc? */
-
DEBUGADD(108,("index: [%d]\n", i));
DEBUGADD(108,("long architecture: [%s]\n", archi_table[i].long_archi));
DEBUGADD(108,("short architecture: [%s]\n", archi_table[i].short_archi));
@@ -1546,6 +1571,9 @@ static WERROR clean_up_driver_struct_level_3(NT_PRINTER_DRIVER_INFO_LEVEL_3 *dri
}
architecture = get_short_archi(driver->environment);
+ if (!architecture) {
+ return WERR_UNKNOWN_PRINTER_DRIVER;
+ }
/* jfm:7/16/2000 the client always sends the cversion=0.
* The server should check which version the driver is by reading
@@ -1559,7 +1587,7 @@ static WERROR clean_up_driver_struct_level_3(NT_PRINTER_DRIVER_INFO_LEVEL_3 *dri
* NT2K: cversion=3
*/
if ((driver->cversion = get_correct_cversion( architecture, driver->driverpath, user, &err)) == -1)
- return err;
+ return err;
return WERR_OK;
}
@@ -1609,6 +1637,9 @@ static WERROR clean_up_driver_struct_level_6(NT_PRINTER_DRIVER_INFO_LEVEL_6 *dri
}
architecture = get_short_archi(driver->environment);
+ if (!architecture) {
+ return WERR_UNKNOWN_PRINTER_DRIVER;
+ }
/* jfm:7/16/2000 the client always sends the cversion=0.
* The server should check which version the driver is by reading
@@ -1726,6 +1757,9 @@ WERROR move_driver_to_download_area(NT_PRINTER_DRIVER_INFO_LEVEL driver_abstract
}
architecture = get_short_archi(driver->environment);
+ if (!architecture) {
+ return WERR_UNKNOWN_PRINTER_DRIVER;
+ }
/*
* Connect to the print$ share under the same account as the user connected to the rpc pipe.
@@ -1901,6 +1935,9 @@ static uint32 add_a_printer_driver_3(NT_PRINTER_DRIVER_INFO_LEVEL_3 *driver)
TDB_DATA kbuf, dbuf;
architecture = get_short_archi(driver->environment);
+ if (!architecture) {
+ return (uint32)-1;
+ }
/* The names are relative. We store them in the form: \print$\arch\version\driver.xxx
* \\server is added in the rpc server layer.
@@ -2059,9 +2096,9 @@ static WERROR get_a_printer_driver_3(NT_PRINTER_DRIVER_INFO_LEVEL_3 **info_ptr,
ZERO_STRUCT(driver);
architecture = get_short_archi(arch);
-
- if ( !architecture )
+ if ( !architecture ) {
return WERR_UNKNOWN_PRINTER_DRIVER;
+ }
/* Windows 4.0 (i.e. win9x) should always use a version of 0 */
@@ -3643,15 +3680,16 @@ static WERROR get_a_printer_2_default(NT_PRINTER_INFO_LEVEL_2 *info, const char
*/
if (lp_default_devmode(snum)) {
- if ((info->devmode = construct_nt_devicemode(info->printername)) == NULL)
+ if ((info->devmode = construct_nt_devicemode(info->printername)) == NULL) {
goto fail;
- }
- else {
+ }
+ } else {
info->devmode = NULL;
}
- if (!nt_printing_getsec(info, sharename, &info->secdesc_buf))
+ if (!nt_printing_getsec(info, sharename, &info->secdesc_buf)) {
goto fail;
+ }
return WERR_OK;
@@ -3675,8 +3713,9 @@ static WERROR get_a_printer_2(NT_PRINTER_INFO_LEVEL_2 *info, const char *servern
kbuf = make_printer_tdbkey( sharename );
dbuf = tdb_fetch(tdb_printers, kbuf);
- if (!dbuf.dptr)
+ if (!dbuf.dptr) {
return get_a_printer_2_default(info, servername, sharename);
+ }
len += tdb_unpack(dbuf.dptr+len, dbuf.dsize-len, "dddddddddddfffffPfffff",
&info->attributes,
@@ -3709,10 +3748,11 @@ static WERROR get_a_printer_2(NT_PRINTER_INFO_LEVEL_2 *info, const char *servern
/* Restore the stripped strings. */
slprintf(info->servername, sizeof(info->servername)-1, "\\\\%s", servername);
- if ( lp_force_printername(snum) )
+ if ( lp_force_printername(snum) ) {
slprintf(printername, sizeof(printername)-1, "\\\\%s\\%s", servername, sharename );
- else
+ } else {
slprintf(printername, sizeof(printername)-1, "\\\\%s\\%s", servername, info->printername);
+ }
fstrcpy(info->printername, printername);
@@ -3739,6 +3779,7 @@ static WERROR get_a_printer_2(NT_PRINTER_INFO_LEVEL_2 *info, const char *servern
if ( !(info->data = TALLOC_ZERO_P( info, NT_PRINTER_DATA )) ) {
DEBUG(0,("unpack_values: talloc() failed!\n"));
+ SAFE_FREE(dbuf.dptr);
return WERR_NOMEM;
}
len += unpack_values( info->data, dbuf.dptr+len, dbuf.dsize-len );
@@ -3746,12 +3787,16 @@ static WERROR get_a_printer_2(NT_PRINTER_INFO_LEVEL_2 *info, const char *servern
/* This will get the current RPC talloc context, but we should be
passing this as a parameter... fixme... JRA ! */
- nt_printing_getsec(info, sharename, &info->secdesc_buf);
+ if (!nt_printing_getsec(info, sharename, &info->secdesc_buf)) {
+ SAFE_FREE(dbuf.dptr);
+ return WERR_NOMEM;
+ }
/* Fix for OS/2 drivers. */
- if (get_remote_arch() == RA_OS2)
+ if (get_remote_arch() == RA_OS2) {
map_to_os2_driver(info->drivername);
+ }
SAFE_FREE(dbuf.dptr);
@@ -4859,6 +4904,9 @@ WERROR delete_printer_driver( NT_PRINTER_DRIVER_INFO_LEVEL_3 *info_3, struct cur
/* delete the tdb data first */
arch = get_short_archi(info_3->environment);
+ if (!arch) {
+ return WERR_UNKNOWN_PRINTER_DRIVER;
+ }
slprintf(key, sizeof(key)-1, "%s%s/%d/%s", DRIVERS_PREFIX,
arch, version, info_3->name);
@@ -4931,7 +4979,10 @@ WERROR nt_printing_setsec(const char *sharename, SEC_DESC_BUF *secdesc_ctr)
SEC_DESC *psd = NULL;
size_t size;
- nt_printing_getsec(mem_ctx, sharename, &old_secdesc_ctr);
+ if (!nt_printing_getsec(mem_ctx, sharename, &old_secdesc_ctr)) {
+ status = WERR_NOMEM;
+ goto out;
+ }
/* Pick out correct owner and group sids */
@@ -4959,6 +5010,11 @@ WERROR nt_printing_setsec(const char *sharename, SEC_DESC_BUF *secdesc_ctr)
dacl,
&size);
+ if (!psd) {
+ status = WERR_NOMEM;
+ goto out;
+ }
+
new_secdesc_ctr = make_sec_desc_buf(mem_ctx, size, psd);
}
@@ -5094,6 +5150,8 @@ BOOL nt_printing_getsec(TALLOC_CTX *ctx, const char *sharename, SEC_DESC_BUF **s
sharename = temp + 1;
}
+ ZERO_STRUCT(ps);
+
/* Fetch security descriptor from tdb */
key = make_printers_secdesc_tdbkey( sharename );
@@ -5101,6 +5159,8 @@ BOOL nt_printing_getsec(TALLOC_CTX *ctx, const char *sharename, SEC_DESC_BUF **s
if (tdb_prs_fetch(tdb_printers, key, &ps, ctx)!=0 ||
!sec_io_desc_buf("nt_printing_getsec", secdesc_ctr, &ps, 1)) {
+ prs_mem_free(&ps);
+
DEBUG(4,("using default secdesc for %s\n", sharename));
if (!(*secdesc_ctr = construct_default_printer_sdb(ctx))) {
@@ -5112,14 +5172,17 @@ BOOL nt_printing_getsec(TALLOC_CTX *ctx, const char *sharename, SEC_DESC_BUF **s
prs_init(&ps, (uint32)sec_desc_size((*secdesc_ctr)->sec) +
sizeof(SEC_DESC_BUF), ctx, MARSHALL);
- if (sec_io_desc_buf("nt_printing_getsec", secdesc_ctr, &ps, 1))
+ if (sec_io_desc_buf("nt_printing_getsec", secdesc_ctr, &ps, 1)) {
tdb_prs_store(tdb_printers, key, &ps);
+ }
prs_mem_free(&ps);
return True;
}
+ prs_mem_free(&ps);
+
/* If security descriptor is owned by S-1-1-0 and winbindd is up,
this security descriptor has been created when winbindd was
down. Take ownership of security descriptor. */
@@ -5145,7 +5208,14 @@ BOOL nt_printing_getsec(TALLOC_CTX *ctx, const char *sharename, SEC_DESC_BUF **s
(*secdesc_ctr)->sec->dacl,
&size);
+ if (!psd) {
+ return False;
+ }
+
new_secdesc_ctr = make_sec_desc_buf(ctx, size, psd);
+ if (!new_secdesc_ctr) {
+ return False;
+ }
/* Swap with other one */
@@ -5175,7 +5245,6 @@ BOOL nt_printing_getsec(TALLOC_CTX *ctx, const char *sharename, SEC_DESC_BUF **s
}
}
- prs_mem_free(&ps);
return True;
}
@@ -5289,7 +5358,11 @@ BOOL print_access_check(struct current_user *user, int snum, int access_type)
return False;
}
- nt_printing_getsec(mem_ctx, pname, &secdesc);
+ if (!nt_printing_getsec(mem_ctx, pname, &secdesc)) {
+ talloc_destroy(mem_ctx);
+ errno = ENOMEM;
+ return False;
+ }
if (access_type == JOB_ACCESS_ADMINISTER) {
SEC_DESC_BUF *parent_secdesc = secdesc;
@@ -5300,6 +5373,12 @@ BOOL print_access_check(struct current_user *user, int snum, int access_type)
secdesc = se_create_child_secdesc(mem_ctx, parent_secdesc->sec, False);
+ if (!secdesc) {
+ talloc_destroy(mem_ctx);
+ errno = ENOMEM;
+ return False;
+ }
+
/* Now this is the bit that really confuses me. The access
type needs to be changed from JOB_ACCESS_ADMINISTER to
PRINTER_ACCESS_ADMINISTER for this to work. Something
@@ -5324,13 +5403,15 @@ BOOL print_access_check(struct current_user *user, int snum, int access_type)
(token_contains_name_in_list(uidtoname(user->ut.uid), NULL,
user->nt_user_token,
lp_printer_admin(snum)))) {
+ talloc_destroy(mem_ctx);
return True;
}
talloc_destroy(mem_ctx);
- if (!result)
+ if (!result) {
errno = EACCES;
+ }
return result;
}
diff --git a/source3/rpc_parse/parse_prs.c b/source3/rpc_parse/parse_prs.c
index f2b002c48c..14e190892d 100644
--- a/source3/rpc_parse/parse_prs.c
+++ b/source3/rpc_parse/parse_prs.c
@@ -1469,11 +1469,12 @@ int tdb_prs_fetch(TDB_CONTEXT *tdb, char *keystr, prs_struct *ps, TALLOC_CTX *me
kbuf.dptr = keystr;
kbuf.dsize = strlen(keystr)+1;
+ prs_init(ps, 0, mem_ctx, UNMARSHALL);
+
dbuf = tdb_fetch(tdb, kbuf);
if (!dbuf.dptr)
return -1;
- prs_init(ps, 0, mem_ctx, UNMARSHALL);
prs_give_memory(ps, dbuf.dptr, dbuf.dsize, True);
return 0;
generated by cgit (git 2.34.1) at 2024-07-02 20:01:25 +0000