Author: herb Date: 2006-12-13 21:00:45 +0000 (Wed, 13 Dec 2006) New Revision: 20153
WebSVN: http://websvn.samba.org/cgi-bin/viewcvs.cgi?view=rev&root=samba&rev=20153 Log: allow bin/sharesec to be built (not by default) Added: branches/SAMBA_3_0_24/source/utils/sharesec.c Modified: branches/SAMBA_3_0_24/source/Makefile.in Changeset: Modified: branches/SAMBA_3_0_24/source/Makefile.in =================================================================== --- branches/SAMBA_3_0_24/source/Makefile.in 2006-12-13 20:47:24 UTC (rev 20152) +++ branches/SAMBA_3_0_24/source/Makefile.in 2006-12-13 21:00:45 UTC (rev 20153) @@ -685,6 +685,11 @@ registry/reg_eventlog.o rpc_server/srv_eventlog_lib.o registry/reg_util.o \ registry/reg_db.o +SHARESEC_OBJ0 = utils/sharesec.o +SHARESEC_OBJ = $(SHARESEC_OBJ0) $(PARAM_OBJ) $(LIB_NONSMBD_OBJ) $(REGOBJS_OBJ) \ + $(ERRORMAP_OBJ) $(RPC_PARSE_OBJ1) $(LIBSAMBA_OBJ) $(DOSERR_OBJ) \ + $(POPT_LIB_OBJ) $(SECRETS_OBJ) + TALLOCTORT_OBJ = lib/talloc/testsuite.o $(PARAM_OBJ) $(LIB_NONSMBD_OBJ) \ $(RPC_PARSE_OBJ1) $(DOSERR_OBJ) $(LIBSAMBA_OBJ) $(SECRETS_OBJ) @@ -865,6 +870,8 @@ eventlogadm: SHOWFLAGS bin/[EMAIL PROTECTED]@ +sharesec: SHOWFLAGS bin/[EMAIL PROTECTED]@ + talloctort : SHOWFLAGS bin/[EMAIL PROTECTED]@ replacetort : SHOWFLAGS bin/[EMAIL PROTECTED]@ @@ -1096,6 +1103,10 @@ @echo Linking $@ @$(CC) $(FLAGS) -o $@ $(EVTLOGADM_OBJ) $(DYNEXP) $(LDFLAGS) $(LIBS) $(LDAP_LIBS) @POPTLIBS@ +bin/[EMAIL PROTECTED]@: $(SHARESEC_OBJ) @BUILD_POPT@ bin/.dummy + @echo Linking $@ + @$(CC) $(FLAGS) -o $@ $(SHARESEC_OBJ) $(DYNEXP) $(LDFLAGS) $(LIBS) $(LDAP_LIBS) @POPTLIBS@ + bin/[EMAIL PROTECTED]@: $(LOCKTEST_OBJ) bin/.dummy @echo Linking $@ @$(CC) $(FLAGS) -o $@ $(LOCKTEST_OBJ) $(LDFLAGS) $(DYNEXP) $(LIBS) $(KRB5LIBS) $(LDAP_LIBS) Added: branches/SAMBA_3_0_24/source/utils/sharesec.c =================================================================== --- branches/SAMBA_3_0_24/source/utils/sharesec.c 2006-12-13 20:47:24 UTC (rev 20152) +++ branches/SAMBA_3_0_24/source/utils/sharesec.c 2006-12-13 21:00:45 UTC (rev 20153) @@ -0,0 +1,415 @@ +/* + * Unix SMB/Netbios implementation. + * Utility for managing share permissions + * + * Copyright (C) Tim Potter 2000 + * Copyright (C) Jeremy Allison 2000 + * Copyright (C) Jelmer Vernooij 2003 + * Copyright (C) Gerald (Jerry) Carter 2005. + * + * 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" + +#define CREATE_ACCESS_READ READ_CONTROL_ACCESS + +/* numeric is set when the user wants numeric SIDs and ACEs rather + than going via LSA calls to resolve them */ +static BOOL numeric = False; + +enum acl_mode {SMB_ACL_REMOVE, SMB_ACL_MODIFY, SMB_ACL_ADD, SMB_ACL_REPLACE, SMB_ACL_VIEW }; +enum exit_values {EXIT_OK, EXIT_FAILED, EXIT_PARSE_ERROR}; + +struct perm_value { + const char *perm; + uint32 mask; +}; + +/* These values discovered by inspection */ + +static const struct perm_value special_values[] = { + { "R", 0x00120089 }, + { "W", 0x00120116 }, + { "X", 0x001200a0 }, + { "D", 0x00010000 }, + { "P", 0x00040000 }, + { "O", 0x00080000 }, + { NULL, 0 }, +}; + +static const struct perm_value standard_values[] = { + { "READ", 0x001200a9 }, + { "CHANGE", 0x001301bf }, + { "FULL", 0x001f01ff }, + { NULL, 0 }, +}; + +/******************************************************************** + print an ACE on a FILE, using either numeric or ascii representation +********************************************************************/ + +static void print_ace(FILE *f, SEC_ACE *ace) +{ + const struct perm_value *v; + fstring sidstr; + int do_print = 0; + uint32 got_mask; + + sid_to_string(sidstr, &ace->trustee); + + fprintf(f, "%s:", sidstr); + + if (numeric) { + fprintf(f, "%d/%d/0x%08x", + ace->type, ace->flags, ace->info.mask); + return; + } + + /* Ace type */ + + if (ace->type == SEC_ACE_TYPE_ACCESS_ALLOWED) { + fprintf(f, "ALLOWED"); + } else if (ace->type == SEC_ACE_TYPE_ACCESS_DENIED) { + fprintf(f, "DENIED"); + } else { + fprintf(f, "%d", ace->type); + } + + /* Not sure what flags can be set in a file ACL */ + + fprintf(f, "/%d/", ace->flags); + + /* Standard permissions */ + + for (v = standard_values; v->perm; v++) { + if (ace->info.mask == v->mask) { + fprintf(f, "%s", v->perm); + return; + } + } + + /* Special permissions. Print out a hex value if we have + leftover bits in the mask. */ + + got_mask = ace->info.mask; + + again: + for (v = special_values; v->perm; v++) { + if ((ace->info.mask & v->mask) == v->mask) { + if (do_print) { + fprintf(f, "%s", v->perm); + } + got_mask &= ~v->mask; + } + } + + if (!do_print) { + if (got_mask != 0) { + fprintf(f, "0x%08x", ace->info.mask); + } else { + do_print = 1; + goto again; + } + } +} + +/******************************************************************** + print a ascii version of a security descriptor on a FILE handle +********************************************************************/ + +static void sec_desc_print(FILE *f, SEC_DESC *sd) +{ + fstring sidstr; + uint32 i; + + fprintf(f, "REVISION:%d\n", sd->revision); + + /* Print owner and group sid */ + + if (sd->owner_sid) { + sid_to_string(sidstr, sd->owner_sid); + } else { + fstrcpy(sidstr, ""); + } + + fprintf(f, "OWNER:%s\n", sidstr); + + if (sd->grp_sid) { + sid_to_string(sidstr, sd->grp_sid); + } else { + fstrcpy(sidstr, ""); + } + + fprintf(f, "GROUP:%s\n", sidstr); + + /* Print aces */ + for (i = 0; sd->dacl && i < sd->dacl->num_aces; i++) { + SEC_ACE *ace = &sd->dacl->ace[i]; + fprintf(f, "ACL:"); + print_ace(f, ace); + fprintf(f, "\n"); + } + +} + +/******************************************************************** +********************************************************************/ + +static BOOL parse_ace( TALLOC_CTX *ctx, SEC_ACE *ace, char *entry ) +{ + SEC_ACCESS sa; + char *p = strchr_m( entry, ':' ); + DOM_SID sid; + uint32 mask; + + if ( !p ) + return False; + + *p = '\0'; + p++; + + string_to_sid( &sid, entry ); + + switch ( *p ) { + case 'F': + case 'f': + mask = GENERIC_RIGHTS_FILE_ALL_ACCESS|STD_RIGHT_ALL_ACCESS; + break; + + case 'R': + case 'r': + mask = GENERIC_RIGHTS_FILE_READ|GENERIC_RIGHTS_FILE_EXECUTE|\ + STANDARD_RIGHTS_READ_ACCESS|STANDARD_RIGHTS_EXECUTE_ACCESS; + break; + + default: + return False; + } + + init_sec_access( &sa, mask ); + + /* no flags on share permissions */ + init_sec_ace( ace, &sid, SEC_ACE_TYPE_ACCESS_ALLOWED, sa, 0 ); + + return True; +} + + +/******************************************************************** +********************************************************************/ + +static SEC_DESC* parse_acl_string( TALLOC_CTX *ctx, const char *szACL, size_t *sd_size ) +{ + SEC_DESC *sd = NULL; + SEC_ACE *ace; + SEC_ACL *acl; + int num_ace; + const char *pacl; + int i; + + if ( !szACL ) + return NULL; + + pacl = szACL; + num_ace = count_chars( pacl, ',' ) + 1; + + if ( !(ace = TALLOC_ZERO_ARRAY( ctx, SEC_ACE, num_ace )) ) + return NULL; + + for ( i=0; i<num_ace; i++ ) { + char *end_acl = strchr_m( pacl, ',' ); + fstring acl_string; + + strncpy( acl_string, pacl, MIN( PTR_DIFF( end_acl, pacl ), sizeof(fstring)-1) ); + acl_string[MIN( PTR_DIFF( end_acl, pacl ), sizeof(fstring)-1)] = '\0'; + + if ( !parse_ace( ctx, &ace[i], acl_string ) ) + return NULL; + + pacl = end_acl; + pacl++; + } + + if ( !(acl = make_sec_acl( ctx, NT4_ACL_REVISION, num_ace, ace )) ) + return NULL; + + sd = make_sec_desc( ctx, SEC_DESC_REVISION, SEC_DESC_SELF_RELATIVE, + &global_sid_Builtin_Administrators, + &global_sid_Builtin_Administrators, + NULL, acl, sd_size); + + return sd; +} + +/******************************************************************** + main program +********************************************************************/ + +int main(int argc, const char *argv[]) +{ + int opt; + enum acl_mode mode = SMB_ACL_REPLACE; + static char *the_acl = NULL; + fstring sharename; + BOOL force_acl = False; + size_t sd_size = 0; + SEC_DESC *secdesc; + int snum; + poptContext pc; + TALLOC_CTX *ctx; + BOOL initialize_sid = False; + struct poptOption long_options[] = { + POPT_AUTOHELP +#if 0 + { "remove", 'r', POPT_ARG_STRING, NULL, 'r', "Delete an ACE", "ACL" }, + { "modify", 'm', POPT_ARG_STRING, NULL, 'm', "Modify an acl", "ACL" }, + { "add", 'a', POPT_ARG_STRING, NULL, 'a', "Add an ACE", "ACL" }, +#endif + { "replace", 'R', POPT_ARG_STRING, NULL, 'R', "Set share mission ACL", "ACLS" }, + { "view", 'v', POPT_ARG_NONE, NULL, 'v', "View current share permissions" }, + { "machine-sid", 'M', POPT_ARG_NONE, NULL, 'M', "Initialize the machine SID" }, + { "force", 'F', POPT_ARG_NONE, NULL, 'F', "Force storing the ACL", "ACLS" }, + POPT_COMMON_SAMBA + { NULL } + }; + + if ( !(ctx = talloc_init("main")) ) { + fprintf( stderr, "Failed to initialize talloc context!\n"); + return -1; + } + + /* set default debug level to 1 regardless of what smb.conf sets */ + setup_logging( "sharesec", True ); + DEBUGLEVEL_CLASS[DBGC_ALL] = 1; + dbf = x_stderr; + x_setbuf( x_stderr, NULL ); + + setlinebuf(stdout); + + load_case_tables(); + + lp_load( dyn_CONFIGFILE, False, False, False, True ); + + pc = poptGetContext("smbcacls", argc, argv, long_options, 0); + + poptSetOtherOptionHelp(pc, "sharename\n"); + + while ((opt = poptGetNextOpt(pc)) != -1) { + switch (opt) { +#if 0 + case 'r': + the_acl = smb_xstrdup(poptGetOptArg(pc)); + mode = SMB_ACL_REMOVE; + break; + + case 'm': + the_acl = smb_xstrdup(poptGetOptArg(pc)); + mode = SMB_ACL_MODIFY; + break; + + case 'a': + the_acl = smb_xstrdup(poptGetOptArg(pc)); + mode = SMB_ACL_ADD; + break; +#endif + case 'R': + the_acl = smb_xstrdup(poptGetOptArg(pc)); + mode = SMB_ACL_REPLACE; + break; + + case 'v': + mode = SMB_ACL_VIEW; + break; + + case 'F': + force_acl = True; + break; + + case 'M': + initialize_sid = True; + break; + } + } + + /* check for initializing secrets.tdb first */ + + if ( initialize_sid ) { + DOM_SID *sid = get_global_sam_sid(); + + if ( !sid ) { + fprintf( stderr, "Failed to retrieve Machine SID!\n"); + return 3; + } + + printf ("%s\n", sid_string_static( sid ) ); + return 0; + } + + if ( mode == SMB_ACL_VIEW && force_acl ) { + fprintf( stderr, "Invalid combination of -F and -v\n"); + return -1; + } + + /* get the sharename */ + + if(!poptPeekArg(pc)) { + poptPrintUsage(pc, stderr, 0); + return -1; + } + + fstrcpy(sharename, poptGetArg(pc)); + + snum = lp_servicenumber( sharename ); + + if ( snum == -1 && !force_acl ) { + fprintf( stderr, "Invalid sharename: %s\n", sharename); + return -1; + } + + switch ( mode ) { + case SMB_ACL_VIEW: + if (!(secdesc = get_share_security( ctx, sharename, + &sd_size )) ) { + fprintf(stderr, "Unable to retrieve permissions for share [%s]\n", sharename); + return -1; + } + sec_desc_print( stdout, secdesc ); + break; + + case SMB_ACL_REMOVE: + case SMB_ACL_ADD: + case SMB_ACL_MODIFY: + printf( "Not implemented\n"); + break; + + case SMB_ACL_REPLACE: + if ( !(secdesc = parse_acl_string( ctx, the_acl, &sd_size )) ) { + fprintf( stderr, "Failed to parse acl\n"); + return -1; + } + + if ( !set_share_security( lp_servicename(snum), secdesc ) ) { + fprintf( stderr, "Failed to store acl for share [%s]\n", sharename ); + return 2; + } + break; + } + + talloc_destroy(ctx); + + return 0; +}
