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126 lines
2.6 KiB
126 lines
2.6 KiB
/*
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* Copyright (C)2008 Sourcefire, Inc.
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*
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* Author: aCaB <acab@clamav.net>
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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 version 2 as
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* published by the Free Software Foundation.
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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., 51 Franklin Street, Fifth Floor, Boston,
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* MA 02110-1301, USA.
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*/
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#if HAVE_CONFIG_H
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#include "clamav-config.h"
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#endif
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#include <stdio.h>
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#include <string.h>
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#include <sys/types.h>
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#include <regex.h>
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#include "shared/output.h"
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#include "whitelist.h"
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struct WHLST {
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regex_t preg;
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struct WHLST *next;
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};
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struct WHLST *wfrom = NULL;
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struct WHLST *wto = NULL;
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void whitelist_free(void) {
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struct WHLST *w;
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while(wfrom) {
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w = wfrom->next;
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regfree(&wfrom->preg);
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free(wfrom);
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wfrom = w;
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}
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while(wto) {
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w = wto->next;
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regfree(&wto->preg);
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free(wto);
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wto = w;
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}
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}
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int whitelist_init(const char *fname) {
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char buf[2048];
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FILE *f;
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struct WHLST *w;
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if(!(f = fopen(fname, "r"))) {
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logg("!Cannot open whitelist file\n");
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return 1;
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}
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while(fgets(buf, sizeof(buf), f) != NULL) {
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struct WHLST **addto = &wto;
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char *ptr = buf;
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int len;
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if(*buf == '#' || *buf == ':' || *buf == '!')
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continue;
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if(!strncasecmp("From:", buf, 5)) {
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ptr+=5;
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addto = &wfrom;
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} else if (!strncasecmp("To:", buf, 3))
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ptr+=3;
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len = strlen(ptr) - 1;
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for(;len>=0; len--) {
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if(ptr[len] != '\n' && ptr[len] != '\r') break;
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ptr[len] = '\0';
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}
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if(!len) continue;
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if (!(w = (struct WHLST *)malloc(sizeof(*w)))) {
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logg("!Out of memory loading whitelist\n");
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whitelist_free();
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return 1;
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}
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w->next = (*addto);
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(*addto) = w;
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if (regcomp(&w->preg, ptr, REG_ICASE|REG_NOSUB)) {
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logg("!Failed to compile regex '%s'\n", ptr);
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whitelist_free();
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return 1;
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}
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}
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return 0;
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}
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int whitelisted(const char *addr, int from) {
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struct WHLST *w;
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if(from) w = wfrom;
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else w = wto;
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while(w) {
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if(!regexec(&w->preg, addr, 0, NULL, 0))
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return 1;
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w = w->next;
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}
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return 0;
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}
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/*
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* Local Variables:
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* mode: c
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* c-basic-offset: 4
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* tab-width: 8
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* End:
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* vim: set cindent smartindent autoindent softtabstop=4 shiftwidth=4 tabstop=8:
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*/
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