diff options
Diffstat (limited to 'source4/ntvfs/cifs')
| -rw-r--r-- | source4/ntvfs/cifs/README | 40 | ||||
| -rw-r--r-- | source4/ntvfs/cifs/vfs_cifs.c | 1263 |
2 files changed, 1303 insertions, 0 deletions
diff --git a/source4/ntvfs/cifs/README b/source4/ntvfs/cifs/README new file mode 100644 index 0000000..3172061 --- /dev/null +++ b/source4/ntvfs/cifs/README @@ -0,0 +1,40 @@ +This is the 'CIFS on CIFS' backend for Samba. It provides a NTVFS +backend that talks to a remote CIFS server. The primary aim of this +backend is for debugging and development, although some poeple may +find it useful as a CIFS gateway. + +There are two modes of operation: Password specified and delegated +credentials. + +Password specified: +------------------- + +This uses a static username/password in the config file, example: + +[myshare] + ntvfs handler = cifs + cifs:server = myserver + cifs:user = tridge + cifs:password = mypass + cifs:domain = TESTDOM + cifs:share = test + + +Delegated credentials: +---------------------- + +If your incoming user is authenticated with Kerberos, and the machine +account for this Samba4 proxy server is 'trusted for delegation', then +the Samba4 proxy can forward the client's credentials to the target. + +You must be joined to the domain (net join <domain> member). + +To set 'trusted for delegation' with MMC, see the checkbox in the +Computer account property page under Users and Computers. + +[myshare] + ntvfs handler = cifs + cifs:server = myserver + cifs:share = test + + diff --git a/source4/ntvfs/cifs/vfs_cifs.c b/source4/ntvfs/cifs/vfs_cifs.c new file mode 100644 index 0000000..121ff57 --- /dev/null +++ b/source4/ntvfs/cifs/vfs_cifs.c @@ -0,0 +1,1263 @@ +/* + Unix SMB/CIFS implementation. + + CIFS-on-CIFS NTVFS filesystem backend + + Copyright (C) Andrew Tridgell 2003 + Copyright (C) James J Myers 2003 <myersjj@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/>. +*/ +/* + this implements a CIFS->CIFS NTVFS filesystem backend. + +*/ + +#include "includes.h" +#include "libcli/raw/libcliraw.h" +#include "libcli/raw/raw_proto.h" +#include "libcli/smb_composite/smb_composite.h" +#include "auth/auth.h" +#include "auth/credentials/credentials.h" +#include "ntvfs/ntvfs.h" +#include "../lib/util/dlinklist.h" +#include "param/param.h" +#include "libcli/resolve/resolve.h" +#include "../libcli/smb/smbXcli_base.h" + +struct cvfs_file { + struct cvfs_file *prev, *next; + uint16_t fnum; + struct ntvfs_handle *h; +}; + +/* this is stored in ntvfs_private */ +struct cvfs_private { + struct smbcli_tree *tree; + struct smbcli_transport *transport; + struct ntvfs_module_context *ntvfs; + struct async_info *pending; + struct cvfs_file *files; + bool map_generic; + bool map_trans2; +}; + + +/* a structure used to pass information to an async handler */ +struct async_info { + struct async_info *next, *prev; + struct cvfs_private *cvfs; + struct ntvfs_request *req; + struct smbcli_request *c_req; + struct cvfs_file *f; + void *parms; +}; + +NTSTATUS ntvfs_cifs_init(TALLOC_CTX *); + +#define CHECK_UPSTREAM_OPEN do { \ + if (!smbXcli_conn_is_connected(p->transport->conn)) { \ + req->async_states->state|=NTVFS_ASYNC_STATE_CLOSE; \ + return NT_STATUS_CONNECTION_DISCONNECTED; \ + } \ +} while(0) + +#define SETUP_PID do { \ + p->tree->session->pid = req->smbpid; \ + CHECK_UPSTREAM_OPEN; \ +} while(0) + +#define SETUP_FILE_HERE(f) do { \ + f = ntvfs_handle_get_backend_data(io->generic.in.file.ntvfs, ntvfs); \ + if (!f) return NT_STATUS_INVALID_HANDLE; \ + io->generic.in.file.fnum = f->fnum; \ +} while (0) + +#define SETUP_FILE do { \ + struct cvfs_file *f; \ + SETUP_FILE_HERE(f); \ +} while (0) + +#define SETUP_PID_AND_FILE do { \ + SETUP_PID; \ + SETUP_FILE; \ +} while (0) + +#define CIFS_SERVER "cifs:server" +#define CIFS_USER "cifs:user" +#define CIFS_PASSWORD "cifs:password" +#define CIFS_DOMAIN "cifs:domain" +#define CIFS_SHARE "cifs:share" +#define CIFS_USE_MACHINE_ACCT "cifs:use-machine-account" +#define CIFS_USE_S4U2PROXY "cifs:use-s4u2proxy" +#define CIFS_MAP_GENERIC "cifs:map-generic" +#define CIFS_MAP_TRANS2 "cifs:map-trans2" + +#define CIFS_USE_MACHINE_ACCT_DEFAULT false +#define CIFS_USE_S4U2PROXY_DEFAULT false +#define CIFS_MAP_GENERIC_DEFAULT false +#define CIFS_MAP_TRANS2_DEFAULT true + +/* + a handler for oplock break events from the server - these need to be passed + along to the client + */ +static bool oplock_handler(struct smbcli_transport *transport, uint16_t tid, uint16_t fnum, uint8_t level, void *p_private) +{ + struct cvfs_private *p = p_private; + NTSTATUS status; + struct ntvfs_handle *h = NULL; + struct cvfs_file *f; + + for (f=p->files; f; f=f->next) { + if (f->fnum != fnum) continue; + h = f->h; + break; + } + + if (!h) { + DEBUG(5,("vfs_cifs: ignoring oplock break level %d for fnum %d\n", level, fnum)); + return true; + } + + DEBUG(5,("vfs_cifs: sending oplock break level %d for fnum %d\n", level, fnum)); + status = ntvfs_send_oplock_break(p->ntvfs, h, level); + if (!NT_STATUS_IS_OK(status)) return false; + return true; +} + +/* + connect to a share - used when a tree_connect operation comes in. +*/ +static NTSTATUS cvfs_connect(struct ntvfs_module_context *ntvfs, + struct ntvfs_request *req, + union smb_tcon *tcon) +{ + NTSTATUS status; + struct cvfs_private *p; + const char *host, *user, *pass, *domain, *remote_share; + struct smb_composite_connect io; + struct composite_context *creq; + struct share_config *scfg = ntvfs->ctx->config; + + struct cli_credentials *credentials; + bool machine_account; + bool s4u2proxy; + const char* sharename; + TALLOC_CTX *tmp_ctx; + + tmp_ctx = talloc_new(req); + if (tmp_ctx == NULL) { + return NT_STATUS_NO_MEMORY; + } + + switch (tcon->generic.level) { + case RAW_TCON_TCON: + sharename = tcon->tcon.in.service; + break; + case RAW_TCON_TCONX: + sharename = tcon->tconx.in.path; + break; + case RAW_TCON_SMB2: + sharename = tcon->smb2.in.path; + break; + default: + status = NT_STATUS_INVALID_LEVEL; + goto out; + } + + if (strncmp(sharename, "\\\\", 2) == 0) { + char *str = strchr(sharename+2, '\\'); + if (str) { + sharename = str + 1; + } + } + + /* Here we need to determine which server to connect to. + * For now we use parametric options, type cifs. + */ + host = share_string_option(tmp_ctx, scfg, CIFS_SERVER, NULL); + user = share_string_option(tmp_ctx, scfg, CIFS_USER, NULL); + pass = share_string_option(tmp_ctx, scfg, CIFS_PASSWORD, NULL); + domain = share_string_option(tmp_ctx, scfg, CIFS_DOMAIN, NULL); + remote_share = share_string_option(tmp_ctx, scfg, CIFS_SHARE, NULL); + if (!remote_share) { + remote_share = sharename; + } + + machine_account = share_bool_option(scfg, CIFS_USE_MACHINE_ACCT, CIFS_USE_MACHINE_ACCT_DEFAULT); + s4u2proxy = share_bool_option(scfg, CIFS_USE_S4U2PROXY, CIFS_USE_S4U2PROXY_DEFAULT); + + p = talloc_zero(ntvfs, struct cvfs_private); + if (!p) { + status = NT_STATUS_NO_MEMORY; + goto out; + } + + ntvfs->private_data = p; + + if (!host) { + DEBUG(1,("CIFS backend: You must supply server\n")); + status = NT_STATUS_INVALID_PARAMETER; + goto out; + } + + if (user && pass) { + DEBUG(5, ("CIFS backend: Using specified password\n")); + credentials = cli_credentials_init(p); + if (!credentials) { + status = NT_STATUS_NO_MEMORY; + goto out; + } + cli_credentials_set_conf(credentials, ntvfs->ctx->lp_ctx); + cli_credentials_set_username(credentials, user, CRED_SPECIFIED); + if (domain) { + cli_credentials_set_domain(credentials, domain, CRED_SPECIFIED); + } + cli_credentials_set_password(credentials, pass, CRED_SPECIFIED); + } else if (machine_account) { + DEBUG(5, ("CIFS backend: Using machine account\n")); + credentials = cli_credentials_init_server(p, + ntvfs->ctx->lp_ctx); + if (credentials == NULL) { + status = NT_STATUS_NO_MEMORY; + goto out; + } + } else if (req->session_info->credentials) { + DEBUG(5, ("CIFS backend: Using delegated credentials\n")); + credentials = req->session_info->credentials; + } else if (s4u2proxy) { + struct ccache_container *ccc = NULL; + const char *err_str = NULL; + int ret; + char *impersonate_principal; + char *self_service; + char *target_service; + + impersonate_principal = talloc_asprintf(req, "%s@%s", + req->session_info->info->account_name, + req->session_info->info->domain_name); + + self_service = talloc_asprintf(req, "cifs/%s", + lpcfg_netbios_name(ntvfs->ctx->lp_ctx)); + + target_service = talloc_asprintf(req, "cifs/%s", host); + + DEBUG(5, ("CIFS backend: Using S4U2Proxy credentials\n")); + + credentials = cli_credentials_init_server(p, + ntvfs->ctx->lp_ctx); + if (credentials == NULL) { + status = NT_STATUS_NO_MEMORY; + goto out; + } + cli_credentials_invalidate_ccache(credentials, CRED_SPECIFIED); + cli_credentials_set_impersonate_principal(credentials, + impersonate_principal, + self_service); + cli_credentials_set_target_service(credentials, target_service); + ret = cli_credentials_get_ccache(credentials, + ntvfs->ctx->event_ctx, + ntvfs->ctx->lp_ctx, + &ccc, + &err_str); + if (ret != 0) { + status = NT_STATUS_CROSSREALM_DELEGATION_FAILURE; + DEBUG(1,("S4U2Proxy: cli_credentials_get_ccache() gave: ret[%d] str[%s] - %s\n", + ret, err_str, nt_errstr(status))); + goto out; + } + + } else { + DEBUG(1,("CIFS backend: NO delegated credentials found: You must supply server, user and password or the client must supply delegated credentials\n")); + status = NT_STATUS_INTERNAL_ERROR; + goto out; + } + + /* connect to the server, using the smbd event context */ + io.in.dest_host = host; + io.in.dest_ports = lpcfg_smb_ports(ntvfs->ctx->lp_ctx); + io.in.socket_options = lpcfg_socket_options(ntvfs->ctx->lp_ctx); + io.in.called_name = host; + io.in.existing_conn = NULL; + io.in.credentials = credentials; + io.in.fallback_to_anonymous = false; + io.in.workgroup = lpcfg_workgroup(ntvfs->ctx->lp_ctx); + io.in.service = remote_share; + io.in.service_type = "?????"; + io.in.gensec_settings = lpcfg_gensec_settings(p, ntvfs->ctx->lp_ctx); + lpcfg_smbcli_options(ntvfs->ctx->lp_ctx, &io.in.options); + lpcfg_smbcli_session_options(ntvfs->ctx->lp_ctx, &io.in.session_options); + + if (!(ntvfs->ctx->client_caps & NTVFS_CLIENT_CAP_LEVEL_II_OPLOCKS)) { + io.in.options.use_level2_oplocks = false; + } + + creq = smb_composite_connect_send(&io, p, + lpcfg_resolve_context(ntvfs->ctx->lp_ctx), + ntvfs->ctx->event_ctx); + status = smb_composite_connect_recv(creq, p); + if (!NT_STATUS_IS_OK(status)) { + goto out; + } + + p->tree = io.out.tree; + + p->transport = p->tree->session->transport; + SETUP_PID; + p->ntvfs = ntvfs; + + ntvfs->ctx->fs_type = talloc_strdup(ntvfs->ctx, "NTFS"); + if (ntvfs->ctx->fs_type == NULL) { + status = NT_STATUS_NO_MEMORY; + goto out; + } + ntvfs->ctx->dev_type = talloc_strdup(ntvfs->ctx, "A:"); + if (ntvfs->ctx->dev_type == NULL) { + status = NT_STATUS_NO_MEMORY; + goto out; + } + + if (tcon->generic.level == RAW_TCON_TCONX) { + tcon->tconx.out.fs_type = ntvfs->ctx->fs_type; + tcon->tconx.out.dev_type = ntvfs->ctx->dev_type; + } + + /* we need to receive oplock break requests from the server */ + smbcli_oplock_handler(p->transport, oplock_handler, p); + + p->map_generic = share_bool_option(scfg, CIFS_MAP_GENERIC, CIFS_MAP_GENERIC_DEFAULT); + + p->map_trans2 = share_bool_option(scfg, CIFS_MAP_TRANS2, CIFS_MAP_TRANS2_DEFAULT); + + status = NT_STATUS_OK; + +out: + TALLOC_FREE(tmp_ctx); + return status; +} + +/* + disconnect from a share +*/ +static NTSTATUS cvfs_disconnect(struct ntvfs_module_context *ntvfs) +{ + struct cvfs_private *p = ntvfs->private_data; + struct async_info *a, *an; + + /* first cleanup pending requests */ + for (a=p->pending; a; a = an) { + an = a->next; + smbcli_request_destroy(a->c_req); + talloc_free(a); + } + + talloc_free(p); + ntvfs->private_data = NULL; + + return NT_STATUS_OK; +} + +/* + destroy an async info structure +*/ +static int async_info_destructor(struct async_info *async) +{ + DLIST_REMOVE(async->cvfs->pending, async); + return 0; +} + +/* + a handler for simple async replies + this handler can only be used for functions that don't return any + parameters (those that just return a status code) + */ +static void async_simple(struct smbcli_request *c_req) +{ + struct async_info *async = c_req->async.private_data; + struct ntvfs_request *req = async->req; + req->async_states->status = smbcli_request_simple_recv(c_req); + talloc_free(async); + req->async_states->send_fn(req); +} + + +/* save some typing for the simple functions */ +#define ASYNC_RECV_TAIL_F(io, async_fn, file) do { \ + if (!c_req) return NT_STATUS_UNSUCCESSFUL; \ + { \ + struct async_info *async; \ + async = talloc(req, struct async_info); \ + if (!async) return NT_STATUS_NO_MEMORY; \ + async->parms = io; \ + async->req = req; \ + async->f = file; \ + async->cvfs = p; \ + async->c_req = c_req; \ + DLIST_ADD(p->pending, async); \ + c_req->async.private_data = async; \ + talloc_set_destructor(async, async_info_destructor); \ + } \ + c_req->async.fn = async_fn; \ + req->async_states->state |= NTVFS_ASYNC_STATE_ASYNC; \ + return NT_STATUS_OK; \ +} while (0) + +#define ASYNC_RECV_TAIL(io, async_fn) ASYNC_RECV_TAIL_F(io, async_fn, NULL) + +#define SIMPLE_ASYNC_TAIL ASYNC_RECV_TAIL(NULL, async_simple) + +/* + delete a file - the dirtype specifies the file types to include in the search. + The name can contain CIFS wildcards, but rarely does (except with OS/2 clients) +*/ +static NTSTATUS cvfs_unlink(struct ntvfs_module_context *ntvfs, + struct ntvfs_request *req, union smb_unlink *unl) +{ + struct cvfs_private *p = ntvfs->private_data; + struct smbcli_request *c_req; + + SETUP_PID; + + /* see if the front end will allow us to perform this + function asynchronously. */ + if (!(req->async_states->state & NTVFS_ASYNC_STATE_MAY_ASYNC)) { + return smb_raw_unlink(p->tree, unl); + } + + c_req = smb_raw_unlink_send(p->tree, unl); + + SIMPLE_ASYNC_TAIL; +} + +/* + a handler for async ioctl replies + */ +static void async_ioctl(struct smbcli_request *c_req) +{ + struct async_info *async = c_req->async.private_data; + struct ntvfs_request *req = async->req; + req->async_states->status = smb_raw_ioctl_recv(c_req, req, async->parms); + talloc_free(async); + req->async_states->send_fn(req); +} + +/* + ioctl interface +*/ +static NTSTATUS cvfs_ioctl(struct ntvfs_module_context *ntvfs, + struct ntvfs_request *req, union smb_ioctl *io) +{ + struct cvfs_private *p = ntvfs->private_data; + struct smbcli_request *c_req; + + SETUP_PID_AND_FILE; + + /* see if the front end will allow us to perform this + function asynchronously. */ + if (!(req->async_states->state & NTVFS_ASYNC_STATE_MAY_ASYNC)) { + return smb_raw_ioctl(p->tree, req, io); + } + + c_req = smb_raw_ioctl_send(p->tree, io); + + ASYNC_RECV_TAIL(io, async_ioctl); +} + +/* + check if a directory exists +*/ +static NTSTATUS cvfs_chkpath(struct ntvfs_module_context *ntvfs, + struct ntvfs_request *req, union smb_chkpath *cp) +{ + struct cvfs_private *p = ntvfs->private_data; + struct smbcli_request *c_req; + + SETUP_PID; + + if (!(req->async_states->state & NTVFS_ASYNC_STATE_MAY_ASYNC)) { + return smb_raw_chkpath(p->tree, cp); + } + + c_req = smb_raw_chkpath_send(p->tree, cp); + + SIMPLE_ASYNC_TAIL; +} + +/* + a handler for async qpathinfo replies + */ +static void async_qpathinfo(struct smbcli_request *c_req) +{ + struct async_info *async = c_req->async.private_data; + struct ntvfs_request *req = async->req; + req->async_states->status = smb_raw_pathinfo_recv(c_req, req, async->parms); + talloc_free(async); + req->async_states->send_fn(req); +} + +/* + return info on a pathname +*/ +static NTSTATUS cvfs_qpathinfo(struct ntvfs_module_context *ntvfs, + struct ntvfs_request *req, union smb_fileinfo *info) +{ + struct cvfs_private *p = ntvfs->private_data; + struct smbcli_request *c_req; + + SETUP_PID; + + if (!(req->async_states->state & NTVFS_ASYNC_STATE_MAY_ASYNC)) { + return smb_raw_pathinfo(p->tree, req, info); + } + + c_req = smb_raw_pathinfo_send(p->tree, info); + + ASYNC_RECV_TAIL(info, async_qpathinfo); +} + +/* + a handler for async qfileinfo replies + */ +static void async_qfileinfo(struct smbcli_request *c_req) +{ + struct async_info *async = c_req->async.private_data; + struct ntvfs_request *req = async->req; + req->async_states->status = smb_raw_fileinfo_recv(c_req, req, async->parms); + talloc_free(async); + req->async_states->send_fn(req); +} + +/* + query info on a open file +*/ +static NTSTATUS cvfs_qfileinfo(struct ntvfs_module_context *ntvfs, + struct ntvfs_request *req, union smb_fileinfo *io) +{ + struct cvfs_private *p = ntvfs->private_data; + struct smbcli_request *c_req; + + SETUP_PID_AND_FILE; + + if (!(req->async_states->state & NTVFS_ASYNC_STATE_MAY_ASYNC)) { + return smb_raw_fileinfo(p->tree, req, io); + } + + c_req = smb_raw_fileinfo_send(p->tree, io); + + ASYNC_RECV_TAIL(io, async_qfileinfo); +} + + +/* + set info on a pathname +*/ +static NTSTATUS cvfs_setpathinfo(struct ntvfs_module_context *ntvfs, + struct ntvfs_request *req, union smb_setfileinfo *st) +{ + struct cvfs_private *p = ntvfs->private_data; + struct smbcli_request *c_req; + + SETUP_PID; + + if (!(req->async_states->state & NTVFS_ASYNC_STATE_MAY_ASYNC)) { + return smb_raw_setpathinfo(p->tree, st); + } + + c_req = smb_raw_setpathinfo_send(p->tree, st); + + SIMPLE_ASYNC_TAIL; +} + + +/* + a handler for async open replies + */ +static void async_open(struct smbcli_request *c_req) +{ + struct async_info *async = c_req->async.private_data; + struct cvfs_private *cvfs = async->cvfs; + struct ntvfs_request *req = async->req; + struct cvfs_file *f = async->f; + union smb_open *io = async->parms; + union smb_handle *file; + if (f == NULL) { + goto failed; + } + talloc_free(async); + req->async_states->status = smb_raw_open_recv(c_req, req, io); + SMB_OPEN_OUT_FILE(io, file); + if (file == NULL) { + goto failed; + } + f->fnum = file->fnum; + file->ntvfs = NULL; + if (!NT_STATUS_IS_OK(req->async_states->status)) goto failed; + req->async_states->status = ntvfs_handle_set_backend_data(f->h, cvfs->ntvfs, f); + if (!NT_STATUS_IS_OK(req->async_states->status)) goto failed; + file->ntvfs = f->h; + DLIST_ADD(cvfs->files, f); +failed: + req->async_states->send_fn(req); +} + +/* + open a file +*/ +static NTSTATUS cvfs_open(struct ntvfs_module_context *ntvfs, + struct ntvfs_request *req, union smb_open *io) +{ + struct cvfs_private *p = ntvfs->private_data; + struct smbcli_request *c_req; + struct ntvfs_handle *h; + struct cvfs_file *f; + NTSTATUS status; + + SETUP_PID; + + if (io->generic.level != RAW_OPEN_GENERIC && + p->map_generic) { + return ntvfs_map_open(ntvfs, req, io); + } + + status = ntvfs_handle_new(ntvfs, req, &h); + NT_STATUS_NOT_OK_RETURN(status); + + f = talloc_zero(h, struct cvfs_file); + NT_STATUS_HAVE_NO_MEMORY(f); + f->h = h; + + if (!(req->async_states->state & NTVFS_ASYNC_STATE_MAY_ASYNC)) { + union smb_handle *file; + + status = smb_raw_open(p->tree, req, io); + NT_STATUS_NOT_OK_RETURN(status); + + SMB_OPEN_OUT_FILE(io, file); + if (file == NULL) { + return NT_STATUS_INVALID_PARAMETER; + } + f->fnum = file->fnum; + file->ntvfs = NULL; + status = ntvfs_handle_set_backend_data(f->h, p->ntvfs, f); + NT_STATUS_NOT_OK_RETURN(status); + file->ntvfs = f->h; + DLIST_ADD(p->files, f); + + return NT_STATUS_OK; + } + + c_req = smb_raw_open_send(p->tree, io); + + ASYNC_RECV_TAIL_F(io, async_open, f); +} + +/* + create a directory +*/ +static NTSTATUS cvfs_mkdir(struct ntvfs_module_context *ntvfs, + struct ntvfs_request *req, union smb_mkdir *md) +{ + struct cvfs_private *p = ntvfs->private_data; + struct smbcli_request *c_req; + + SETUP_PID; + + if (!(req->async_states->state & NTVFS_ASYNC_STATE_MAY_ASYNC)) { + return smb_raw_mkdir(p->tree, md); + } + + c_req = smb_raw_mkdir_send(p->tree, md); + + SIMPLE_ASYNC_TAIL; +} + +/* + remove a directory +*/ +static NTSTATUS cvfs_rmdir(struct ntvfs_module_context *ntvfs, + struct ntvfs_request *req, struct smb_rmdir *rd) +{ + struct cvfs_private *p = ntvfs->private_data; + struct smbcli_request *c_req; + + SETUP_PID; + + if (!(req->async_states->state & NTVFS_ASYNC_STATE_MAY_ASYNC)) { + return smb_raw_rmdir(p->tree, rd); + } + c_req = smb_raw_rmdir_send(p->tree, rd); + + SIMPLE_ASYNC_TAIL; +} + +/* + rename a set of files +*/ +static NTSTATUS cvfs_rename(struct ntvfs_module_context *ntvfs, + struct ntvfs_request *req, union smb_rename *ren) +{ + struct cvfs_private *p = ntvfs->private_data; + struct smbcli_request *c_req; + + SETUP_PID; + + if (ren->nttrans.level == RAW_RENAME_NTTRANS) { + struct cvfs_file *f; + f = ntvfs_handle_get_backend_data(ren->nttrans.in.file.ntvfs, ntvfs); + if (!f) return NT_STATUS_INVALID_HANDLE; + ren->nttrans.in.file.fnum = f->fnum; + } + + if (!(req->async_states->state & NTVFS_ASYNC_STATE_MAY_ASYNC)) { + return smb_raw_rename(p->tree, ren); + } + + c_req = smb_raw_rename_send(p->tree, ren); + + SIMPLE_ASYNC_TAIL; +} + +/* + copy a set of files +*/ +static NTSTATUS cvfs_copy(struct ntvfs_module_context *ntvfs, + struct ntvfs_request *req, struct smb_copy *cp) +{ + return NT_STATUS_NOT_SUPPORTED; +} + +/* + a handler for async read replies + */ +static void async_read(struct smbcli_request *c_req) +{ + struct async_info *async = c_req->async.private_data; + struct ntvfs_request *req = async->req; + req->async_states->status = smb_raw_read_recv(c_req, async->parms); + talloc_free(async); + req->async_states->send_fn(req); +} + +/* + read from a file +*/ +static NTSTATUS cvfs_read(struct ntvfs_module_context *ntvfs, + struct ntvfs_request *req, union smb_read *io) +{ + struct cvfs_private *p = ntvfs->private_data; + struct smbcli_request *c_req; + + SETUP_PID; + + if (io->generic.level != RAW_READ_GENERIC && + p->map_generic) { + return ntvfs_map_read(ntvfs, req, io); + } + + SETUP_FILE; + + if (!(req->async_states->state & NTVFS_ASYNC_STATE_MAY_ASYNC)) { + return smb_raw_read(p->tree, io); + } + + c_req = smb_raw_read_send(p->tree, io); + + ASYNC_RECV_TAIL(io, async_read); +} + +/* + a handler for async write replies + */ +static void async_write(struct smbcli_request *c_req) +{ + struct async_info *async = c_req->async.private_data; + struct ntvfs_request *req = async->req; + req->async_states->status = smb_raw_write_recv(c_req, async->parms); + talloc_free(async); + req->async_states->send_fn(req); +} + +/* + write to a file +*/ +static NTSTATUS cvfs_write(struct ntvfs_module_context *ntvfs, + struct ntvfs_request *req, union smb_write *io) +{ + struct cvfs_private *p = ntvfs->private_data; + struct smbcli_request *c_req; + + SETUP_PID; + + if (io->generic.level != RAW_WRITE_GENERIC && + p->map_generic) { + return ntvfs_map_write(ntvfs, req, io); + } + SETUP_FILE; + + if (!(req->async_states->state & NTVFS_ASYNC_STATE_MAY_ASYNC)) { + return smb_raw_write(p->tree, io); + } + + c_req = smb_raw_write_send(p->tree, io); + + ASYNC_RECV_TAIL(io, async_write); +} + +/* + a handler for async seek replies + */ +static void async_seek(struct smbcli_request *c_req) +{ + struct async_info *async = c_req->async.private_data; + struct ntvfs_request *req = async->req; + req->async_states->status = smb_raw_seek_recv(c_req, async->parms); + talloc_free(async); + req->async_states->send_fn(req); +} + +/* + seek in a file +*/ +static NTSTATUS cvfs_seek(struct ntvfs_module_context *ntvfs, + struct ntvfs_request *req, + union smb_seek *io) +{ + struct cvfs_private *p = ntvfs->private_data; + struct smbcli_request *c_req; + + SETUP_PID_AND_FILE; + + if (!(req->async_states->state & NTVFS_ASYNC_STATE_MAY_ASYNC)) { + return smb_raw_seek(p->tree, io); + } + + c_req = smb_raw_seek_send(p->tree, io); + + ASYNC_RECV_TAIL(io, async_seek); +} + +/* + flush a file +*/ +static NTSTATUS cvfs_flush(struct ntvfs_module_context *ntvfs, + struct ntvfs_request *req, + union smb_flush *io) +{ + struct cvfs_private *p = ntvfs->private_data; + struct smbcli_request *c_req; + + SETUP_PID; + switch (io->generic.level) { + case RAW_FLUSH_FLUSH: + SETUP_FILE; + break; + case RAW_FLUSH_ALL: + io->generic.in.file.fnum = 0xFFFF; + break; + case RAW_FLUSH_SMB2: + return NT_STATUS_INVALID_LEVEL; + } + + if (!(req->async_states->state & NTVFS_ASYNC_STATE_MAY_ASYNC)) { + return smb_raw_flush(p->tree, io); + } + + c_req = smb_raw_flush_send(p->tree, io); + + SIMPLE_ASYNC_TAIL; +} + +/* + close a file +*/ +static NTSTATUS cvfs_close(struct ntvfs_module_context *ntvfs, + struct ntvfs_request *req, union smb_close *io) +{ + struct cvfs_private *p = ntvfs->private_data; + struct smbcli_request *c_req; + struct cvfs_file *f; + union smb_close io2; + + SETUP_PID; + + if (io->generic.level != RAW_CLOSE_GENERIC && + p->map_generic) { + return ntvfs_map_close(ntvfs, req, io); + } + + if (io->generic.level == RAW_CLOSE_GENERIC) { + ZERO_STRUCT(io2); + io2.close.level = RAW_CLOSE_CLOSE; + io2.close.in.file = io->generic.in.file; + io2.close.in.write_time = io->generic.in.write_time; + io = &io2; + } + + SETUP_FILE_HERE(f); + /* Note, we aren't free-ing f, or it's h here. Should we? + even if file-close fails, we'll remove it from the list, + what else would we do? Maybe we should not remove until + after the proxied call completes? */ + DLIST_REMOVE(p->files, f); + + if (!(req->async_states->state & NTVFS_ASYNC_STATE_MAY_ASYNC)) { + return smb_raw_close(p->tree, io); + } + + c_req = smb_raw_close_send(p->tree, io); + + SIMPLE_ASYNC_TAIL; +} + +/* + exit - closing files open by the pid +*/ +static NTSTATUS cvfs_exit(struct ntvfs_module_context *ntvfs, + struct ntvfs_request *req) +{ + struct cvfs_private *p = ntvfs->private_data; + struct smbcli_request *c_req; + + SETUP_PID; + + if (!(req->async_states->state & NTVFS_ASYNC_STATE_MAY_ASYNC)) { + return smb_raw_exit(p->tree->session); + } + + c_req = smb_raw_exit_send(p->tree->session); + + SIMPLE_ASYNC_TAIL; +} + +/* + logoff - closing files open by the user +*/ +static NTSTATUS cvfs_logoff(struct ntvfs_module_context *ntvfs, + struct ntvfs_request *req) +{ + /* we can't do this right in the cifs backend .... */ + return NT_STATUS_OK; +} + +/* + setup for an async call - nothing to do yet +*/ +static NTSTATUS cvfs_async_setup(struct ntvfs_module_context *ntvfs, + struct ntvfs_request *req, + void *private_data) +{ + return NT_STATUS_OK; +} + +/* + cancel an async call +*/ +static NTSTATUS cvfs_cancel(struct ntvfs_module_context *ntvfs, + struct ntvfs_request *req) +{ + struct cvfs_private *p = ntvfs->private_data; + struct async_info *a; + + /* find the matching request */ + for (a=p->pending;a;a=a->next) { + if (a->req == req) { + break; + } + } + + if (a == NULL) { + return NT_STATUS_INVALID_PARAMETER; + } + + return smb_raw_ntcancel(a->c_req); +} + +/* + lock a byte range +*/ +static NTSTATUS cvfs_lock(struct ntvfs_module_context *ntvfs, + struct ntvfs_request *req, union smb_lock *io) +{ + struct cvfs_private *p = ntvfs->private_data; + struct smbcli_request *c_req; + + SETUP_PID; + + if (io->generic.level != RAW_LOCK_GENERIC && + p->map_generic) { + return ntvfs_map_lock(ntvfs, req, io); + } + SETUP_FILE; + + if (!(req->async_states->state & NTVFS_ASYNC_STATE_MAY_ASYNC)) { + return smb_raw_lock(p->tree, io); + } + + c_req = smb_raw_lock_send(p->tree, io); + SIMPLE_ASYNC_TAIL; +} + +/* + set info on a open file +*/ +static NTSTATUS cvfs_setfileinfo(struct ntvfs_module_context *ntvfs, + struct ntvfs_request *req, + union smb_setfileinfo *io) +{ + struct cvfs_private *p = ntvfs->private_data; + struct smbcli_request *c_req; + + SETUP_PID_AND_FILE; + + if (!(req->async_states->state & NTVFS_ASYNC_STATE_MAY_ASYNC)) { + return smb_raw_setfileinfo(p->tree, io); + } + c_req = smb_raw_setfileinfo_send(p->tree, io); + + SIMPLE_ASYNC_TAIL; +} + + +/* + a handler for async fsinfo replies + */ +static void async_fsinfo(struct smbcli_request *c_req) +{ + struct async_info *async = c_req->async.private_data; + struct ntvfs_request *req = async->req; + req->async_states->status = smb_raw_fsinfo_recv(c_req, req, async->parms); + talloc_free(async); + req->async_states->send_fn(req); +} + +/* + return filesystem space info +*/ +static NTSTATUS cvfs_fsinfo(struct ntvfs_module_context *ntvfs, + struct ntvfs_request *req, union smb_fsinfo *fs) +{ + struct cvfs_private *p = ntvfs->private_data; + struct smbcli_request *c_req; + + SETUP_PID; + + if (!(req->async_states->state & NTVFS_ASYNC_STATE_MAY_ASYNC)) { + return smb_raw_fsinfo(p->tree, req, fs); + } + + c_req = smb_raw_fsinfo_send(p->tree, req, fs); + + ASYNC_RECV_TAIL(fs, async_fsinfo); +} + +/* + return print queue info +*/ +static NTSTATUS cvfs_lpq(struct ntvfs_module_context *ntvfs, + struct ntvfs_request *req, union smb_lpq *lpq) +{ + return NT_STATUS_NOT_SUPPORTED; +} + +/* + list files in a directory matching a wildcard pattern +*/ +static NTSTATUS cvfs_search_first(struct ntvfs_module_context *ntvfs, + struct ntvfs_request *req, union smb_search_first *io, + void *search_private, + bool (*callback)(void *, const union smb_search_data *)) +{ + struct cvfs_private *p = ntvfs->private_data; + + SETUP_PID; + + return smb_raw_search_first(p->tree, req, io, search_private, callback); +} + +/* continue a search */ +static NTSTATUS cvfs_search_next(struct ntvfs_module_context *ntvfs, + struct ntvfs_request *req, union smb_search_next *io, + void *search_private, + bool (*callback)(void *, const union smb_search_data *)) +{ + struct cvfs_private *p = ntvfs->private_data; + + SETUP_PID; + + return smb_raw_search_next(p->tree, req, io, search_private, callback); +} + +/* close a search */ +static NTSTATUS cvfs_search_close(struct ntvfs_module_context *ntvfs, + struct ntvfs_request *req, union smb_search_close *io) +{ + struct cvfs_private *p = ntvfs->private_data; + + SETUP_PID; + + return smb_raw_search_close(p->tree, io); +} + +/* + a handler for async trans2 replies + */ +static void async_trans2(struct smbcli_request *c_req) +{ + struct async_info *async = c_req->async.private_data; + struct ntvfs_request *req = async->req; + req->async_states->status = smb_raw_trans2_recv(c_req, req, async->parms); + talloc_free(async); + req->async_states->send_fn(req); +} + +/* raw trans2 */ +static NTSTATUS cvfs_trans2(struct ntvfs_module_context *ntvfs, + struct ntvfs_request *req, + struct smb_trans2 *trans2) +{ + struct cvfs_private *p = ntvfs->private_data; + struct smbcli_request *c_req; + + if (p->map_trans2) { + return NT_STATUS_NOT_IMPLEMENTED; + } + + SETUP_PID; + + if (!(req->async_states->state & NTVFS_ASYNC_STATE_MAY_ASYNC)) { + return smb_raw_trans2(p->tree, req, trans2); + } + + c_req = smb_raw_trans2_send(p->tree, trans2); + + ASYNC_RECV_TAIL(trans2, async_trans2); +} + + +/* SMBtrans - not used on file shares */ +static NTSTATUS cvfs_trans(struct ntvfs_module_context *ntvfs, + struct ntvfs_request *req, + struct smb_trans2 *trans2) +{ + return NT_STATUS_ACCESS_DENIED; +} + +/* + a handler for async change notify replies + */ +static void async_changenotify(struct smbcli_request *c_req) +{ + struct async_info *async = c_req->async.private_data; + struct ntvfs_request *req = async->req; + req->async_states->status = smb_raw_changenotify_recv(c_req, req, async->parms); + talloc_free(async); + req->async_states->send_fn(req); +} + +/* change notify request - always async */ +static NTSTATUS cvfs_notify(struct ntvfs_module_context *ntvfs, + struct ntvfs_request *req, + union smb_notify *io) +{ + struct cvfs_private *p = ntvfs->private_data; + struct smbcli_request *c_req; + int saved_timeout = p->transport->options.request_timeout; + struct cvfs_file *f; + + if (io->nttrans.level != RAW_NOTIFY_NTTRANS) { + return NT_STATUS_NOT_IMPLEMENTED; + } + + SETUP_PID; + + f = ntvfs_handle_get_backend_data(io->nttrans.in.file.ntvfs, ntvfs); + if (!f) return NT_STATUS_INVALID_HANDLE; + io->nttrans.in.file.fnum = f->fnum; + + /* this request doesn't make sense unless its async */ + if (!(req->async_states->state & NTVFS_ASYNC_STATE_MAY_ASYNC)) { + return NT_STATUS_INVALID_PARAMETER; + } + + /* we must not timeout on notify requests - they wait + forever */ + p->transport->options.request_timeout = 0; + + c_req = smb_raw_changenotify_send(p->tree, io); + + p->transport->options.request_timeout = saved_timeout; + + ASYNC_RECV_TAIL(io, async_changenotify); +} + +/* + initialise the CIFS->CIFS backend, registering ourselves with the ntvfs subsystem + */ +NTSTATUS ntvfs_cifs_init(TALLOC_CTX *ctx) +{ + NTSTATUS ret; + struct ntvfs_ops ops; + NTVFS_CURRENT_CRITICAL_SIZES(vers); + + ZERO_STRUCT(ops); + + /* fill in the name and type */ + ops.name = "cifs"; + ops.type = NTVFS_DISK; + + /* fill in all the operations */ + ops.connect_fn = cvfs_connect; + ops.disconnect_fn = cvfs_disconnect; + ops.unlink_fn = cvfs_unlink; + ops.chkpath_fn = cvfs_chkpath; + ops.qpathinfo_fn = cvfs_qpathinfo; + ops.setpathinfo_fn = cvfs_setpathinfo; + ops.open_fn = cvfs_open; + ops.mkdir_fn = cvfs_mkdir; + ops.rmdir_fn = cvfs_rmdir; + ops.rename_fn = cvfs_rename; + ops.copy_fn = cvfs_copy; + ops.ioctl_fn = cvfs_ioctl; + ops.read_fn = cvfs_read; + ops.write_fn = cvfs_write; + ops.seek_fn = cvfs_seek; + ops.flush_fn = cvfs_flush; + ops.close_fn = cvfs_close; + ops.exit_fn = cvfs_exit; + ops.lock_fn = cvfs_lock; + ops.setfileinfo_fn = cvfs_setfileinfo; + ops.qfileinfo_fn = cvfs_qfileinfo; + ops.fsinfo_fn = cvfs_fsinfo; + ops.lpq_fn = cvfs_lpq; + ops.search_first_fn = cvfs_search_first; + ops.search_next_fn = cvfs_search_next; + ops.search_close_fn = cvfs_search_close; + ops.trans_fn = cvfs_trans; + ops.logoff_fn = cvfs_logoff; + ops.async_setup_fn = cvfs_async_setup; + ops.cancel_fn = cvfs_cancel; + ops.notify_fn = cvfs_notify; + ops.trans2_fn = cvfs_trans2; + + /* register ourselves with the NTVFS subsystem. We register + under the name 'cifs'. */ + ret = ntvfs_register(&ops, &vers); + + if (!NT_STATUS_IS_OK(ret)) { + DEBUG(0,("Failed to register CIFS backend!\n")); + } + + return ret; +} |