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/*
Unix SMB/CIFS implementation.
manipulate nbt name structures
Copyright (C) Andrew Tridgell 1994-1998
Copyright (C) Jeremy Allison 2007
Copyright (C) Andrew Bartlett 2009.
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/>.
*/
#include "includes.h"
#include "lib/util/xfile.h"
#include "lib/util/util_net.h"
#include "system/filesys.h"
#include "system/network.h"
/********************************************************
Start parsing the lmhosts file.
*********************************************************/
XFILE *startlmhosts(const char *fname)
{
XFILE *fp = x_fopen(fname,O_RDONLY, 0);
if (!fp) {
DEBUG(4,("startlmhosts: Can't open lmhosts file %s. "
"Error was %s\n",
fname, strerror(errno)));
return NULL;
}
return fp;
}
/********************************************************
Parse the next line in the lmhosts file.
*********************************************************/
bool getlmhostsent(TALLOC_CTX *ctx, XFILE *fp, char **pp_name, int *name_type,
struct sockaddr_storage *pss)
{
char line[1024];
*pp_name = NULL;
while(!x_feof(fp) && !x_ferror(fp)) {
char *ip = NULL;
char *flags = NULL;
char *extra = NULL;
char *name = NULL;
const char *ptr;
char *ptr1 = NULL;
int count = 0;
*name_type = -1;
if (!fgets_slash(line,sizeof(line),fp)) {
continue;
}
if (*line == '#') {
continue;
}
ptr = line;
if (next_token_talloc(ctx, &ptr, &ip, NULL))
++count;
if (next_token_talloc(ctx, &ptr, &name, NULL))
++count;
if (next_token_talloc(ctx, &ptr, &flags, NULL))
++count;
if (next_token_talloc(ctx, &ptr, &extra, NULL))
++count;
if (count <= 0)
continue;
if (count > 0 && count < 2) {
DEBUG(0,("getlmhostsent: Ill formed hosts line [%s]\n",
line));
continue;
}
if (count >= 4) {
DEBUG(0,("getlmhostsent: too many columns "
"in lmhosts file (obsolete syntax)\n"));
continue;
}
if (!flags) {
flags = talloc_strdup(ctx, "");
if (!flags) {
continue;
}
}
DEBUG(4, ("getlmhostsent: lmhost entry: %s %s %s\n",
ip, name, flags));
if (strchr_m(flags,'G') || strchr_m(flags,'S')) {
DEBUG(0,("getlmhostsent: group flag "
"in lmhosts ignored (obsolete)\n"));
continue;
}
if (!interpret_string_addr(pss, ip, AI_NUMERICHOST)) {
DEBUG(0,("getlmhostsent: invalid address "
"%s.\n", ip));
}
/* Extra feature. If the name ends in '#XX',
* where XX is a hex number, then only add that name type. */
if((ptr1 = strchr_m(name, '#')) != NULL) {
char *endptr;
ptr1++;
*name_type = (int)strtol(ptr1, &endptr, 16);
if(!*ptr1 || (endptr == ptr1)) {
DEBUG(0,("getlmhostsent: invalid name "
"%s containing '#'.\n", name));
continue;
}
*(--ptr1) = '\0'; /* Truncate at the '#' */
}
*pp_name = talloc_strdup(ctx, name);
if (!*pp_name) {
return false;
}
return true;
}
return false;
}
/********************************************************
Finish parsing the lmhosts file.
*********************************************************/
void endlmhosts(XFILE *fp)
{
x_fclose(fp);
}
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