diff options
Diffstat (limited to 'source3/smbd/fake_file.c')
| -rw-r--r-- | source3/smbd/fake_file.c | 166 |
1 files changed, 166 insertions, 0 deletions
diff --git a/source3/smbd/fake_file.c b/source3/smbd/fake_file.c new file mode 100644 index 0000000000..86d78e039a --- /dev/null +++ b/source3/smbd/fake_file.c @@ -0,0 +1,166 @@ +/* + Unix SMB/CIFS implementation. + FAKE FILE suppport, for faking up special files windows want access to + Copyright (C) Stefan (metze) Metzmacher 2003 + + 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 2 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, write to the Free Software + Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. +*/ + +#include "includes.h" + +/**************************************************************************** + Open a file with a share mode. +****************************************************************************/ +files_struct *open_fake_file_shared1(enum FAKE_FILE_TYPE fake_file_type, connection_struct *conn,char *fname, + SMB_STRUCT_STAT *psbuf, + uint32 desired_access, + int share_mode,int ofun, mode_t mode,int oplock_request, + int *Access,int *action) +{ + extern struct current_user current_user; + int flags=0; + files_struct *fsp = NULL; + + if (fake_file_type == 0) { + return open_file_shared1(conn,fname,psbuf,desired_access, + share_mode,ofun,mode, + oplock_request,Access,action); + } + + /* access check */ + if (conn->admin_user != True) { + DEBUG(1,("access_denied to service[%s] file[%s] user[%s]\n", + lp_servicename(SNUM(conn)),fname,conn->user)); + errno = EACCES; + return NULL; + } + + fsp = file_new(conn); + if(!fsp) + return NULL; + + DEBUG(5,("open_fake_file_shared1: fname = %s, FID = %d, share_mode = %x, ofun = %x, mode = %o, oplock request = %d\n", + fname, fsp->fnum, share_mode, ofun, (int)mode, oplock_request )); + + if (!check_name(fname,conn)) { + file_free(fsp); + return NULL; + } + + fsp->fd = -1; + fsp->mode = psbuf->st_mode; + fsp->inode = psbuf->st_ino; + fsp->dev = psbuf->st_dev; + fsp->vuid = current_user.vuid; + fsp->size = psbuf->st_size; + fsp->pos = -1; + fsp->can_lock = True; + fsp->can_read = ((flags & O_WRONLY)==0); + fsp->can_write = ((flags & (O_WRONLY|O_RDWR))!=0); + fsp->share_mode = 0; + fsp->desired_access = desired_access; + fsp->print_file = False; + fsp->modified = False; + fsp->oplock_type = NO_OPLOCK; + fsp->sent_oplock_break = NO_BREAK_SENT; + fsp->is_directory = False; + fsp->is_stat = False; + fsp->directory_delete_on_close = False; + fsp->conn = conn; + string_set(&fsp->fsp_name,fname); + fsp->wcp = NULL; /* Write cache pointer. */ + + fsp->fake_file_handle = init_fake_file_handle(fake_file_type); + + if (fsp->fake_file_handle==NULL) { + file_free(fsp); + return NULL; + } + + conn->num_files_open++; + return fsp; +} + +static FAKE_FILE fake_files[] = { +#ifdef WITH_QUOTAS + {FAKE_FILE_NAME_QUOTA, FAKE_FILE_TYPE_QUOTA, init_quota_handle, destroy_quota_handle}, +#endif /* WITH_QUOTAS */ + {NULL, FAKE_FILE_TYPE_NONE, NULL, NULL } +}; + +int is_fake_file(char *fname) +{ + int i; + + if (!fname) + return 0; + + for (i=0;fake_files[i].name!=NULL;i++) { + if (strncmp(fname,fake_files[i].name,strlen(fake_files[i].name))==0) { + DEBUG(5,("is_fake_file: [%s] is a fake file\n",fname)); + return fake_files[i].type; + } + } + + return FAKE_FILE_TYPE_NONE; +} + +struct _FAKE_FILE_HANDLE *init_fake_file_handle(enum FAKE_FILE_TYPE type) +{ + TALLOC_CTX *mem_ctx = NULL; + FAKE_FILE_HANDLE *fh = NULL; + int i; + + for (i=0;fake_files[i].name!=NULL;i++) { + if (fake_files[i].type==type) { + DEBUG(5,("init_fake_file_handle: for [%s]\n",fake_files[i].name)); + + if ((mem_ctx=talloc_init("fake_file_handle"))==NULL) { + DEBUG(0,("talloc_init(fake_file_handle) failed.\n")); + return NULL; + } + + if ((fh =(FAKE_FILE_HANDLE *)talloc_zero(mem_ctx, sizeof(FAKE_FILE_HANDLE)))==NULL) { + DEBUG(0,("talloc_zero() failed.\n")); + talloc_destroy(mem_ctx); + return NULL; + } + + fh->type = type; + fh->mem_ctx = mem_ctx; + + if (fake_files[i].init_pd) + fh->pd = fake_files[i].init_pd(fh->mem_ctx); + + fh->free_pd = fake_files[i].free_pd; + + return fh; + } + } + + return NULL; +} + +void destroy_fake_file_handle(FAKE_FILE_HANDLE **fh) +{ + if (!fh||!(*fh)) + return ; + + if ((*fh)->free_pd) + (*fh)->free_pd(&(*fh)->pd); + + talloc_destroy((*fh)->mem_ctx); + (*fh) = NULL; +} |