diff options
Diffstat (limited to 'source4/lib/registry/rpc.c')
| -rw-r--r-- | source4/lib/registry/rpc.c | 454 |
1 files changed, 454 insertions, 0 deletions
diff --git a/source4/lib/registry/rpc.c b/source4/lib/registry/rpc.c new file mode 100644 index 0000000000..18b7607713 --- /dev/null +++ b/source4/lib/registry/rpc.c @@ -0,0 +1,454 @@ +/* + Samba Unix/Linux SMB implementation + RPC backend for the registry library + Copyright (C) 2003-2007 Jelmer Vernooij, jelmer@samba.org + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 3 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program. If not, see <http://www.gnu.org/licenses/>. */ + +#include "includes.h" +#include "registry.h" +#include "librpc/gen_ndr/ndr_winreg_c.h" + +struct rpc_key { + struct registry_key key; + struct policy_handle pol; + struct dcerpc_pipe *pipe; + + uint32_t num_values; + uint32_t num_subkeys; + uint32_t max_valnamelen; + uint32_t max_valdatalen; + uint32_t max_subkeynamelen; +}; + +struct rpc_registry_context { + struct registry_context context; + struct dcerpc_pipe *pipe; +}; + +static struct registry_operations reg_backend_rpc; + +/** + * This is the RPC backend for the registry library. + */ + +static void init_winreg_String(struct winreg_String *name, const char *s) +{ + name->name = s; +} + + +#define openhive(u) static WERROR open_ ## u(struct dcerpc_pipe *p, TALLOC_CTX *mem_ctx, struct policy_handle *hnd) \ +{ \ + struct winreg_Open ## u r; \ + NTSTATUS status; \ + \ + r.in.system_name = NULL; \ + r.in.access_mask = SEC_FLAG_MAXIMUM_ALLOWED; \ + r.out.handle = hnd;\ + \ + status = dcerpc_winreg_Open ## u(p, mem_ctx, &r); \ + if (NT_STATUS_IS_ERR(status)) {\ + DEBUG(0,("Error executing open\n"));\ + return ntstatus_to_werror(status);\ + }\ +\ + return r.out.result;\ +} + +openhive(HKLM) +openhive(HKCU) +openhive(HKPD) +openhive(HKU) +openhive(HKCR) +openhive(HKDD) +openhive(HKCC) + +static struct { + uint32_t hkey; + WERROR (*open) (struct dcerpc_pipe *p, TALLOC_CTX *, + struct policy_handle *h); +} known_hives[] = { + { HKEY_LOCAL_MACHINE, open_HKLM }, + { HKEY_CURRENT_USER, open_HKCU }, + { HKEY_CLASSES_ROOT, open_HKCR }, + { HKEY_PERFORMANCE_DATA, open_HKPD }, + { HKEY_USERS, open_HKU }, + { HKEY_DYN_DATA, open_HKDD }, + { HKEY_CURRENT_CONFIG, open_HKCC }, + { 0, NULL } +}; + +static WERROR rpc_query_key(const struct registry_key *k); + +static WERROR rpc_get_predefined_key(struct registry_context *ctx, + uint32_t hkey_type, + struct registry_key **k) +{ + int n; + struct rpc_key *mykeydata; + struct rpc_registry_context *rctx = talloc_get_type(ctx, struct rpc_registry_context); + + *k = NULL; + + for(n = 0; known_hives[n].hkey; n++) { + if(known_hives[n].hkey == hkey_type) + break; + } + + if (known_hives[n].open == NULL) { + DEBUG(1, ("No such hive %d\n", hkey_type)); + return WERR_NO_MORE_ITEMS; + } + + mykeydata = talloc_zero(ctx, struct rpc_key); + mykeydata->key.context = ctx; + mykeydata->pipe = talloc_reference(mykeydata, rctx->pipe); + mykeydata->num_values = -1; + mykeydata->num_subkeys = -1; + *k = (struct registry_key *)mykeydata; + return known_hives[n].open(mykeydata->pipe, mykeydata, &(mykeydata->pol)); +} + +#if 0 +static WERROR rpc_key_put_rpc_data(TALLOC_CTX *mem_ctx, struct registry_key *k) +{ + struct winreg_OpenKey r; + struct rpc_key_data *mykeydata; + + k->backend_data = mykeydata = talloc(mem_ctx, struct rpc_key_data); + mykeydata->num_values = -1; + mykeydata->num_subkeys = -1; + + /* Then, open the handle using the hive */ + + memset(&r, 0, sizeof(struct winreg_OpenKey)); + r.in.handle = &(((struct rpc_key_data *)k->hive->root->backend_data)->pol); + init_winreg_String(&r.in.keyname, k->path); + r.in.unknown = 0x00000000; + r.in.access_mask = 0x02000000; + r.out.handle = &mykeydata->pol; + + dcerpc_winreg_OpenKey((struct dcerpc_pipe *)k->hive->backend_data, + mem_ctx, &r); + + return r.out.result; +} +#endif + +static WERROR rpc_open_key(TALLOC_CTX *mem_ctx, struct registry_key *h, + const char *name, struct registry_key **key) +{ + struct rpc_key *parentkeydata = talloc_get_type(h, struct rpc_key), + *mykeydata; + struct winreg_OpenKey r; + NTSTATUS status; + + mykeydata = talloc(mem_ctx, struct rpc_key); + + mykeydata->key.context = parentkeydata->key.context; + mykeydata->pipe = talloc_reference(mykeydata, parentkeydata->pipe); + mykeydata->num_values = -1; + mykeydata->num_subkeys = -1; + *key = (struct registry_key *)mykeydata; + + /* Then, open the handle using the hive */ + ZERO_STRUCT(r); + r.in.parent_handle = &parentkeydata->pol; + init_winreg_String(&r.in.keyname, name); + r.in.unknown = 0x00000000; + r.in.access_mask = 0x02000000; + r.out.handle = &mykeydata->pol; + + status = dcerpc_winreg_OpenKey(mykeydata->pipe, mem_ctx, &r); + if (NT_STATUS_IS_ERR(status)) { + DEBUG(0,("Error executing openkey: %s\n", nt_errstr(status))); + return ntstatus_to_werror(status); + } + + return r.out.result; +} + +static WERROR rpc_get_value_by_index(TALLOC_CTX *mem_ctx, + const struct registry_key *parent, + uint32_t n, + const char **value_name, + uint32_t *type, + DATA_BLOB *data) +{ + struct rpc_key *mykeydata = talloc_get_type(parent, struct rpc_key); + WERROR error; + struct winreg_EnumValue r; + uint32_t in_type = 0; + NTSTATUS status; + struct winreg_StringBuf name; + uint32_t zero = 0; + + ZERO_STRUCT(r); + + if (mykeydata->num_values == -1) { + error = rpc_query_key(parent); + if(!W_ERROR_IS_OK(error)) return error; + } + + name.length = 0; + name.size = mykeydata->max_valnamelen * 2; + name.name = NULL; + + r.in.handle = &mykeydata->pol; + r.in.enum_index = n; + r.in.name = &name; + r.in.type = &in_type; + r.in.value = talloc_zero_array(mem_ctx, uint8_t, 0); + r.in.length = &zero; + r.in.size = &mykeydata->max_valdatalen; + r.out.name = &name; + r.out.type = type; + + status = dcerpc_winreg_EnumValue(mykeydata->pipe, mem_ctx, &r); + if(NT_STATUS_IS_ERR(status)) { + DEBUG(0, ("Error in EnumValue: %s\n", nt_errstr(status))); + return WERR_GENERAL_FAILURE; + } + + if(NT_STATUS_IS_OK(status) && + W_ERROR_IS_OK(r.out.result) && r.out.length) { + *value_name = talloc_strdup(mem_ctx, r.out.name->name); + *data = data_blob_talloc(mem_ctx, r.out.value, *r.out.length); + return WERR_OK; + } + + return r.out.result; +} + +static WERROR rpc_get_subkey_by_index(TALLOC_CTX *mem_ctx, + const struct registry_key *parent, + uint32_t n, + const char **name, + const char **keyclass, + NTTIME *last_changed_time) +{ + struct winreg_EnumKey r; + struct rpc_key *mykeydata = talloc_get_type(parent, struct rpc_key); + NTSTATUS status; + struct winreg_StringBuf namebuf, classbuf; + NTTIME change_time = 0; + + ZERO_STRUCT(r); + + namebuf.length = 0; + namebuf.size = 1024; + namebuf.name = NULL; + classbuf.length = 0; + classbuf.size = 0; + classbuf.name = NULL; + + r.in.handle = &mykeydata->pol; + r.in.enum_index = n; + r.in.name = &namebuf; + r.in.keyclass = &classbuf; + r.in.last_changed_time = &change_time; + + r.out.name = &namebuf; + + status = dcerpc_winreg_EnumKey(mykeydata->pipe, mem_ctx, &r); + if (NT_STATUS_IS_OK(status) && W_ERROR_IS_OK(r.out.result)) { + *name = talloc_strdup(mem_ctx, r.out.name->name); + if (keyclass != NULL) + *keyclass = talloc_strdup(mem_ctx, r.out.keyclass->name); + } + + return r.out.result; +} + +static WERROR rpc_add_key(TALLOC_CTX *mem_ctx, + struct registry_key *parent, const char *name, + const char *key_class, + struct security_descriptor *sec, + struct registry_key **key) +{ + NTSTATUS status; + struct winreg_CreateKey r; + struct rpc_key *parentkd = talloc_get_type(parent, struct rpc_key); + struct rpc_key *rpck = talloc(mem_ctx, struct rpc_key); + + init_winreg_String(&r.in.name, name); + init_winreg_String(&r.in.keyclass, NULL); + + r.in.handle = &parentkd->pol; + r.out.new_handle = &rpck->pol; + r.in.options = 0; + r.in.access_mask = SEC_STD_ALL; + r.in.secdesc = NULL; + + status = dcerpc_winreg_CreateKey(parentkd->pipe, mem_ctx, &r); + + if (!NT_STATUS_IS_OK(status)) { + talloc_free(rpck); + DEBUG(1, ("CreateKey failed - %s\n", nt_errstr(status))); + return ntstatus_to_werror(status); + } + + if (W_ERROR_IS_OK(r.out.result)) { + rpck->pipe = talloc_reference(rpck, parentkd->pipe); + *key = (struct registry_key *)rpck; + } + + return r.out.result; +} + +static WERROR rpc_query_key(const struct registry_key *k) +{ + NTSTATUS status; + struct winreg_QueryInfoKey r; + struct rpc_key *mykeydata = talloc_get_type(k, struct rpc_key); + TALLOC_CTX *mem_ctx = talloc_init("query_key"); + uint32_t max_subkeysize; + uint32_t secdescsize; + NTTIME last_changed_time; + + ZERO_STRUCT(r.out); + + r.out.num_subkeys = &mykeydata->num_subkeys; + r.out.max_subkeylen = &mykeydata->max_subkeynamelen; + r.out.max_valnamelen = &mykeydata->max_valnamelen; + r.out.max_valbufsize = &mykeydata->max_valdatalen; + r.out.max_subkeysize = &max_subkeysize; + r.out.num_values = &mykeydata->num_values; + r.out.secdescsize = &secdescsize; + r.out.last_changed_time = &last_changed_time; + + r.out.classname = r.in.classname = talloc_zero(mem_ctx, struct winreg_String); + init_winreg_String(r.in.classname, NULL); + r.in.handle = &mykeydata->pol; + + status = dcerpc_winreg_QueryInfoKey(mykeydata->pipe, mem_ctx, &r); + talloc_free(mem_ctx); + + if (!NT_STATUS_IS_OK(status)) { + DEBUG(1, ("QueryInfoKey failed - %s\n", nt_errstr(status))); + return ntstatus_to_werror(status); + } + + if (W_ERROR_IS_OK(r.out.result)) { + } + + return r.out.result; +} + +static WERROR rpc_del_key(struct registry_key *parent, const char *name) +{ + NTSTATUS status; + struct rpc_key *mykeydata = talloc_get_type(parent, struct rpc_key); + struct winreg_DeleteKey r; + TALLOC_CTX *mem_ctx = talloc_init("del_key"); + + r.in.handle = &mykeydata->pol; + init_winreg_String(&r.in.key, name); + + status = dcerpc_winreg_DeleteKey(mykeydata->pipe, mem_ctx, &r); + + talloc_free(mem_ctx); + + return r.out.result; +} + +static WERROR rpc_get_info(TALLOC_CTX *mem_ctx, const struct registry_key *key, + const char **classname, + uint32_t *numsubkeys, + uint32_t *numvalue, + NTTIME *last_changed_time, + uint32_t *max_subkeynamelen, + uint32_t *max_valnamelen, + uint32_t *max_valbufsize) +{ + struct rpc_key *mykeydata = talloc_get_type(key, struct rpc_key); + WERROR error; + + if (mykeydata->num_values == -1) { + error = rpc_query_key(key); + if(!W_ERROR_IS_OK(error)) return error; + } + + /* FIXME: *classname = talloc_strdup(mem_ctx, mykeydata->classname); */ + /* FIXME: *last_changed_time = mykeydata->last_changed_time */ + + if (numvalue != NULL) + *numvalue = mykeydata->num_values; + + if (numsubkeys != NULL) + *numsubkeys = mykeydata->num_subkeys; + + if (max_valnamelen != NULL) + *max_valnamelen = mykeydata->max_valnamelen; + + if (max_valbufsize != NULL) + *max_valbufsize = mykeydata->max_valdatalen; + + if (max_subkeynamelen != NULL) + *max_subkeynamelen = mykeydata->max_subkeynamelen; + + return WERR_OK; +} + +static struct registry_operations reg_backend_rpc = { + .name = "rpc", + .open_key = rpc_open_key, + .get_predefined_key = rpc_get_predefined_key, + .enum_key = rpc_get_subkey_by_index, + .enum_value = rpc_get_value_by_index, + .create_key = rpc_add_key, + .delete_key = rpc_del_key, + .get_key_info = rpc_get_info, + .get_predefined_key = rpc_get_predefined_key, +}; + +_PUBLIC_ WERROR reg_open_remote(struct registry_context **ctx, + struct auth_session_info *session_info, + struct cli_credentials *credentials, + struct loadparm_context *lp_ctx, + const char *location, struct event_context *ev) +{ + NTSTATUS status; + struct dcerpc_pipe *p; + struct rpc_registry_context *rctx; + + dcerpc_init(); + + rctx = talloc(NULL, struct rpc_registry_context); + + /* Default to local smbd if no connection is specified */ + if (!location) { + location = talloc_strdup(rctx, "ncalrpc:"); + } + + status = dcerpc_pipe_connect(rctx /* TALLOC_CTX */, + &p, location, + &ndr_table_winreg, + credentials, ev, lp_ctx); + rctx->pipe = p; + + if(NT_STATUS_IS_ERR(status)) { + DEBUG(1, ("Unable to open '%s': %s\n", location, + nt_errstr(status))); + talloc_free(rctx); + *ctx = NULL; + return ntstatus_to_werror(status); + } + + *ctx = (struct registry_context *)rctx; + (*ctx)->ops = ®_backend_rpc; + + return WERR_OK; +} |