mirror of
https://github.com/samba-team/samba.git
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ef2e26c91b
(This used to be commit b0510b5428
)
372 lines
10 KiB
C
372 lines
10 KiB
C
/*
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* Unix SMB/CIFS implementation.
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* RPC Pipe client / server routines for Dfs
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* Copyright (C) Andrew Tridgell 1992-1997,
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* Copyright (C) Luke Kenneth Casson Leighton 1996-1997,
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* Copyright (C) Shirish Kalele 2000.
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* Copyright (C) Jeremy Allison 2001.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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/* This is the implementation of the dfs pipe. */
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#include "includes.h"
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#include "nterr.h"
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#undef DBGC_CLASS
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#define DBGC_CLASS DBGC_RPC_SRV
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#define MAX_MSDFS_JUNCTIONS 256
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/* This function does not return a WERROR or NTSTATUS code but rather 1 if
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dfs exists, or 0 otherwise. */
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uint32 _dfs_exist(pipes_struct *p, DFS_Q_DFS_EXIST *q_u, DFS_R_DFS_EXIST *r_u)
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{
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if(lp_host_msdfs())
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return 1;
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else
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return 0;
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}
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WERROR _dfs_add(pipes_struct *p, DFS_Q_DFS_ADD* q_u, DFS_R_DFS_ADD *r_u)
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{
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struct current_user user;
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struct junction_map jn;
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struct referral* old_referral_list = NULL;
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BOOL exists = False;
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pstring dfspath, servername, sharename;
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pstring altpath;
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get_current_user(&user,p);
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if (user.uid != 0) {
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DEBUG(10,("_dfs_add: uid != 0. Access denied.\n"));
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return WERR_ACCESS_DENIED;
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}
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unistr2_to_ascii(dfspath, &q_u->DfsEntryPath, sizeof(dfspath)-1);
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unistr2_to_ascii(servername, &q_u->ServerName, sizeof(servername)-1);
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unistr2_to_ascii(sharename, &q_u->ShareName, sizeof(sharename)-1);
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DEBUG(5,("init_reply_dfs_add: Request to add %s -> %s\\%s.\n",
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dfspath, servername, sharename));
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pstrcpy(altpath, servername);
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pstrcat(altpath, "\\");
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pstrcat(altpath, sharename);
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if(get_referred_path(dfspath, &jn, NULL, NULL))
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{
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exists = True;
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jn.referral_count += 1;
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old_referral_list = jn.referral_list;
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}
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else
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jn.referral_count = 1;
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jn.referral_list = (struct referral*) talloc(p->mem_ctx, jn.referral_count
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* sizeof(struct referral));
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if(jn.referral_list == NULL)
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{
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DEBUG(0,("init_reply_dfs_add: talloc failed for referral list!\n"));
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return WERR_DFS_INTERNAL_ERROR;
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}
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if(old_referral_list)
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{
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memcpy(jn.referral_list, old_referral_list,
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sizeof(struct referral)*jn.referral_count-1);
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SAFE_FREE(old_referral_list);
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}
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jn.referral_list[jn.referral_count-1].proximity = 0;
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jn.referral_list[jn.referral_count-1].ttl = REFERRAL_TTL;
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pstrcpy(jn.referral_list[jn.referral_count-1].alternate_path, altpath);
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if(!create_msdfs_link(&jn, exists))
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return WERR_DFS_CANT_CREATE_JUNCT;
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return WERR_OK;
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}
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WERROR _dfs_remove(pipes_struct *p, DFS_Q_DFS_REMOVE *q_u,
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DFS_R_DFS_REMOVE *r_u)
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{
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struct current_user user;
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struct junction_map jn;
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BOOL found = False;
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pstring dfspath, servername, sharename;
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pstring altpath;
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get_current_user(&user,p);
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if (user.uid != 0) {
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DEBUG(10,("_dfs_remove: uid != 0. Access denied.\n"));
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return WERR_ACCESS_DENIED;
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}
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unistr2_to_ascii(dfspath, &q_u->DfsEntryPath, sizeof(dfspath)-1);
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if(q_u->ptr_ServerName)
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unistr2_to_ascii(servername, &q_u->ServerName, sizeof(servername)-1);
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if(q_u->ptr_ShareName)
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unistr2_to_ascii(sharename, &q_u->ShareName, sizeof(sharename)-1);
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if(q_u->ptr_ServerName && q_u->ptr_ShareName)
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{
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pstrcpy(altpath, servername);
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pstrcat(altpath, "\\");
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pstrcat(altpath, sharename);
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strlower(altpath);
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}
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DEBUG(5,("init_reply_dfs_remove: Request to remove %s -> %s\\%s.\n",
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dfspath, servername, sharename));
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if(!get_referred_path(dfspath, &jn, NULL, NULL))
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return WERR_DFS_NO_SUCH_VOL;
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/* if no server-share pair given, remove the msdfs link completely */
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if(!q_u->ptr_ServerName && !q_u->ptr_ShareName)
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{
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if(!remove_msdfs_link(&jn))
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return WERR_DFS_NO_SUCH_VOL;
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}
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else
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{
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int i=0;
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/* compare each referral in the list with the one to remove */
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DEBUG(10,("altpath: .%s. refcnt: %d\n", altpath, jn.referral_count));
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for(i=0;i<jn.referral_count;i++)
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{
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pstring refpath;
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pstrcpy(refpath,jn.referral_list[i].alternate_path);
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trim_string(refpath, "\\", "\\");
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DEBUG(10,("_dfs_remove: refpath: .%s.\n", refpath));
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if(strequal(refpath, altpath))
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{
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*(jn.referral_list[i].alternate_path)='\0';
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DEBUG(10,("_dfs_remove: Removal request matches referral %s\n",
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refpath));
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found = True;
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}
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}
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if(!found)
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return WERR_DFS_NO_SUCH_SHARE;
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/* Only one referral, remove it */
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if(jn.referral_count == 1)
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{
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if(!remove_msdfs_link(&jn))
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return WERR_DFS_NO_SUCH_VOL;
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}
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else
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{
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if(!create_msdfs_link(&jn, True))
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return WERR_DFS_CANT_CREATE_JUNCT;
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}
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}
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return WERR_OK;
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}
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static BOOL init_reply_dfs_info_1(struct junction_map* j, DFS_INFO_1* dfs1, int num_j)
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{
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int i=0;
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for(i=0;i<num_j;i++)
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{
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pstring str;
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dfs1[i].ptr_entrypath = 1;
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slprintf(str, sizeof(pstring)-1, "\\\\%s\\%s\\%s", lp_netbios_name(),
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j[i].service_name, j[i].volume_name);
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DEBUG(5,("init_reply_dfs_info_1: %d) initing entrypath: %s\n",i,str));
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init_unistr2(&dfs1[i].entrypath,str,strlen(str)+1);
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}
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return True;
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}
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static BOOL init_reply_dfs_info_2(struct junction_map* j, DFS_INFO_2* dfs2, int num_j)
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{
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int i=0;
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for(i=0;i<num_j;i++)
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{
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pstring str;
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dfs2[i].ptr_entrypath = 1;
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slprintf(str, sizeof(pstring)-1, "\\\\%s\\%s\\%s", lp_netbios_name(),
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j[i].service_name, j[i].volume_name);
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init_unistr2(&dfs2[i].entrypath, str, strlen(str)+1);
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dfs2[i].ptr_comment = 0;
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dfs2[i].state = 1; /* set up state of dfs junction as OK */
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dfs2[i].num_storages = j[i].referral_count;
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}
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return True;
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}
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static BOOL init_reply_dfs_info_3(TALLOC_CTX *ctx, struct junction_map* j, DFS_INFO_3* dfs3, int num_j)
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{
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int i=0,ii=0;
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for(i=0;i<num_j;i++)
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{
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pstring str;
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dfs3[i].ptr_entrypath = 1;
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if (j[i].volume_name[0] == '\0')
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slprintf(str, sizeof(pstring)-1, "\\\\%s\\%s",
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lp_netbios_name(), j[i].service_name);
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else
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slprintf(str, sizeof(pstring)-1, "\\\\%s\\%s\\%s", lp_netbios_name(),
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j[i].service_name, j[i].volume_name);
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init_unistr2(&dfs3[i].entrypath, str, strlen(str)+1);
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dfs3[i].ptr_comment = 1;
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init_unistr2(&dfs3[i].comment, "", 1);
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dfs3[i].state = 1;
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dfs3[i].num_storages = dfs3[i].num_storage_infos = j[i].referral_count;
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dfs3[i].ptr_storages = 1;
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/* also enumerate the storages */
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dfs3[i].storages = (DFS_STORAGE_INFO*) talloc(ctx, j[i].referral_count *
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sizeof(DFS_STORAGE_INFO));
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if (!dfs3[i].storages)
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return False;
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memset(dfs3[i].storages, '\0', j[i].referral_count * sizeof(DFS_STORAGE_INFO));
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for(ii=0;ii<j[i].referral_count;ii++)
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{
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char* p;
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pstring path;
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DFS_STORAGE_INFO* stor = &(dfs3[i].storages[ii]);
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struct referral* ref = &(j[i].referral_list[ii]);
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pstrcpy(path, ref->alternate_path);
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trim_string(path,"\\","");
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p = strrchr_m(path,'\\');
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if(p==NULL)
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{
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DEBUG(4,("init_reply_dfs_info_3: invalid path: no \\ found in %s\n",path));
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continue;
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}
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*p = '\0';
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DEBUG(5,("storage %d: %s.%s\n",ii,path,p+1));
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stor->state = 2; /* set all storages as ONLINE */
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init_unistr2(&stor->servername, path, strlen(path)+1);
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init_unistr2(&stor->sharename, p+1, strlen(p+1)+1);
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stor->ptr_servername = stor->ptr_sharename = 1;
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}
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}
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return True;
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}
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static WERROR init_reply_dfs_ctr(TALLOC_CTX *ctx, uint32 level,
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DFS_INFO_CTR* ctr, struct junction_map* jn,
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int num_jn)
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{
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/* do the levels */
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switch(level)
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{
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case 1:
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{
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DFS_INFO_1* dfs1;
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dfs1 = (DFS_INFO_1*) talloc(ctx, num_jn * sizeof(DFS_INFO_1));
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if (!dfs1)
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return WERR_NOMEM;
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init_reply_dfs_info_1(jn, dfs1, num_jn);
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ctr->dfs.info1 = dfs1;
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break;
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}
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case 2:
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{
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DFS_INFO_2* dfs2;
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dfs2 = (DFS_INFO_2*) talloc(ctx, num_jn * sizeof(DFS_INFO_2));
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if (!dfs2)
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return WERR_NOMEM;
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init_reply_dfs_info_2(jn, dfs2, num_jn);
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ctr->dfs.info2 = dfs2;
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break;
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}
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case 3:
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{
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DFS_INFO_3* dfs3;
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dfs3 = (DFS_INFO_3*) talloc(ctx, num_jn * sizeof(DFS_INFO_3));
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if (!dfs3)
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return WERR_NOMEM;
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init_reply_dfs_info_3(ctx, jn, dfs3, num_jn);
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ctr->dfs.info3 = dfs3;
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break;
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}
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default:
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return WERR_INVALID_PARAM;
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}
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return WERR_OK;
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}
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WERROR _dfs_enum(pipes_struct *p, DFS_Q_DFS_ENUM *q_u, DFS_R_DFS_ENUM *r_u)
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{
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uint32 level = q_u->level;
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struct junction_map jn[MAX_MSDFS_JUNCTIONS];
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int num_jn = 0;
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num_jn = enum_msdfs_links(jn);
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DEBUG(5,("make_reply_dfs_enum: %d junctions found in Dfs, doing level %d\n", num_jn, level));
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r_u->ptr_buffer = level;
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r_u->level = r_u->level2 = level;
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r_u->ptr_num_entries = r_u->ptr_num_entries2 = 1;
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r_u->num_entries = r_u->num_entries2 = num_jn;
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r_u->reshnd.ptr_hnd = 1;
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r_u->reshnd.handle = num_jn;
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r_u->ctr = (DFS_INFO_CTR*)talloc(p->mem_ctx, sizeof(DFS_INFO_CTR));
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if (!r_u->ctr)
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return WERR_NOMEM;
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ZERO_STRUCTP(r_u->ctr);
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r_u->ctr->switch_value = level;
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r_u->ctr->num_entries = num_jn;
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r_u->ctr->ptr_dfs_ctr = 1;
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r_u->status = init_reply_dfs_ctr(p->mem_ctx, level, r_u->ctr, jn, num_jn);
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return r_u->status;
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}
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WERROR _dfs_get_info(pipes_struct *p, DFS_Q_DFS_GET_INFO *q_u,
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DFS_R_DFS_GET_INFO *r_u)
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{
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UNISTR2* uni_path = &q_u->uni_path;
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uint32 level = q_u->level;
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pstring path;
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struct junction_map jn;
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unistr2_to_ascii(path, uni_path, sizeof(path)-1);
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if(!create_junction(path, &jn))
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return WERR_DFS_NO_SUCH_SERVER;
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if(!get_referred_path(path, &jn, NULL, NULL))
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return WERR_DFS_NO_SUCH_VOL;
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r_u->level = level;
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r_u->ptr_ctr = 1;
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r_u->status = init_reply_dfs_ctr(p->mem_ctx, level, &r_u->ctr, &jn, 1);
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return r_u->status;
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}
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