mirror of
https://github.com/samba-team/samba.git
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2ec69980c8
metze
(This used to be commit bc5281a95f
)
161 lines
4.2 KiB
C
161 lines
4.2 KiB
C
/*
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Unix SMB/CIFS implementation.
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Wins Database
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Copyright (C) Jeremy Allison 1994-2003
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Copyright (C) Jelmer Vernooij 2005
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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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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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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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#include "includes.h"
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#include "system/filesys.h"
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#include "lib/samba3/samba3.h"
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#define WINS_VERSION 1
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NTSTATUS samba3_read_winsdb( const char *fn, TALLOC_CTX *ctx, struct samba3_winsdb_entry **entries, uint32_t *count )
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{
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XFILE *fp;
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char *line;
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if((fp = x_fopen(fn,O_RDONLY,0)) == NULL) {
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DEBUG(0,("initialise_wins: Can't open wins database file %s. Error was %s\n",
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fn, strerror(errno) ));
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return NT_STATUS_OPEN_FAILED;
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}
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*count = 0;
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*entries = NULL;
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while (!x_feof(fp)) {
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struct samba3_winsdb_entry entry;
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const char *name_str, *ttl_str, *nb_flags_str;
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const char **args;
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char *p;
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int i;
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unsigned int hash;
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int version;
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/* Read a line from the wins.dat file. Strips whitespace
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from the beginning and end of the line. */
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line = fgets_slash(NULL,8,fp);
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if (!line) {
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return NT_STATUS_UNEXPECTED_IO_ERROR;
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}
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if (*line == '#') {
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SAFE_FREE(line);
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continue;
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}
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if (strncmp(line,"VERSION ", 8) == 0) {
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if (sscanf(line,"VERSION %d %u", &version, &hash) != 2 ||
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version != WINS_VERSION) {
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DEBUG(0,("Discarding invalid wins.dat file [%s]\n",line));
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SAFE_FREE(line);
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x_fclose(fp);
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return NT_STATUS_REVISION_MISMATCH;
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}
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SAFE_FREE(line);
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continue;
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}
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args = str_list_make_shell(ctx, line, NULL);
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/*
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* Now we handle multiple IP addresses per name we need
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* to iterate over the line twice. The first time to
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* determine how many IP addresses there are, the second
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* time to actually parse them into the ip_list array.
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*/
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name_str = args[0];
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if (!name_str) {
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DEBUG(0,("initialise_wins: Failed to parse name when parsing line %s\n", line ));
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SAFE_FREE(line);
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continue;
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}
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ttl_str = args[1];
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if (!ttl_str) {
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DEBUG(0,("initialise_wins: Failed to parse time to live when parsing line %s\n", line ));
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SAFE_FREE(line);
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continue;
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}
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/*
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* Determine the number of IP addresses per line.
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*/
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entry.ip_count = 0;
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for (i = 2; args[i] && strchr(args[i], '.'); i++) entry.ip_count++;
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if(entry.ip_count == 0) {
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DEBUG(0,("initialise_wins: Missing IP address when parsing line %s\n", line ));
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SAFE_FREE(line);
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continue;
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}
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/* Allocate the space for the ip_list. */
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if((entry.ips = talloc_array ( ctx, struct ipv4_addr, entry.ip_count)) == NULL) {
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DEBUG(0,("initialise_wins: Malloc fail !\n"));
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SAFE_FREE(line);
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return NT_STATUS_NO_MEMORY;
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}
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/* Reset and re-parse the line. */
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for(i = 0; i < entry.ip_count; i++) {
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entry.ips[i] = interpret_addr2(args[i+2]);
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}
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nb_flags_str = args[2 + entry.ip_count];
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SMB_ASSERT(nb_flags_str);
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/*
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* Deal with SELF or REGISTER name encoding. Default is REGISTER
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* for compatibility with old nmbds.
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*/
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if(nb_flags_str[strlen(nb_flags_str)-1] == 'S') {
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DEBUG(5,("initialise_wins: Ignoring SELF name %s\n", line));
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talloc_free(entry.ips);
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SAFE_FREE(line);
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continue;
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}
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/* Netbios name. # divides the name from the type (hex): netbios#xx */
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entry.name = talloc_strdup(ctx, name_str);
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if((p = strchr(entry.name,'#')) != NULL) {
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*p = 0;
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sscanf(p+1,"%x",&entry.type);
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}
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/* Decode the netbios flags (hex) and the time-to-live (in seconds). */
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sscanf(nb_flags_str,"%x",&entry.nb_flags);
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entry.ttl = atol(ttl_str);
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*entries = talloc_realloc(ctx, *entries, struct samba3_winsdb_entry, (*count)+1);
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(*entries)[*count] = entry;
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(*count)++;
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}
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x_fclose(fp);
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return NT_STATUS_OK;
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}
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