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/*
* ModSecurity for Apache 2.x, http://www.modsecurity.org/
* Copyright (c) 2004-2011 Trustwave Holdings, Inc. (http://www.trustwave.com/)
*
* You may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* If any of the files related to licensing are missing or if you have any
* other questions related to licensing please contact Trustwave Holdings, Inc.
* directly using the email address security@modsecurity.org.
*/
#include "msc_gsb.h"
static int gsb_db_create(directory_config *dcfg, char **error_msg)
{
char errstr[1024];
apr_pool_t *mp = dcfg->mp;
gsb_db *gsb = dcfg->gsb;
apr_int32_t wanted = APR_FINFO_SIZE;
apr_finfo_t finfo;
apr_status_t rc;
apr_size_t nbytes;
char *buf = NULL, *p = NULL, *savedptr = NULL;
char *op = NULL;
if ((rc = apr_file_open(&gsb->db, gsb->dbfn, APR_READ, APR_OS_DEFAULT, mp)) != APR_SUCCESS) {
*error_msg = apr_psprintf(mp, "Could not open gsb database \"%s\": %s", gsb->dbfn, apr_strerror(rc, errstr, 1024));
return 0;
}
if ((rc = apr_file_info_get(&finfo, wanted, gsb->db)) != APR_SUCCESS) {
*error_msg = apr_psprintf(mp, "Could not cannot get gsb malware file information \"%s\": %s", gsb->dbfn, apr_strerror(rc, errstr, 1024));
apr_file_close(gsb->db);
return 0;
}
buf = (char *)malloc(finfo.size+1);
if (buf == NULL) {
*error_msg = apr_psprintf(mp, "Could not alloc memory for gsb data");
apr_file_close(gsb->db);
return 0;
}
rc = apr_file_read_full(gsb->db, buf, finfo.size, &nbytes);
gsb->gsb_table = apr_hash_make(dcfg->mp);
if (gsb->gsb_table == NULL) {
*error_msg = apr_psprintf(mp, "Could not alloc memory for gsb table");
free(buf);
buf = NULL;
apr_file_close(gsb->db);
return 0;
}
p = apr_strtok(buf,"\t",&savedptr);
while (p != NULL) {
op = strchr(p,'+');
if(op != NULL) {
char *hash = ++op;
if(strlen(hash) == 32)
apr_hash_set(gsb->gsb_table, hash, APR_HASH_KEY_STRING, "malware");
}
op = strchr(p,'-');
if(op != NULL) {
char *hash = ++op;
if(strlen(hash) == 32)
apr_hash_set(gsb->gsb_table, hash, APR_HASH_KEY_STRING, NULL);
}
p = apr_strtok(NULL,"\t",&savedptr);
}
apr_file_close(gsb->db);
free(buf);
buf = NULL;
return 1;
}
/**
* Initialise Gsb malware data structure
*/
int gsb_db_init(directory_config *dcfg, const char *dbfn, char **error_msg)
{
*error_msg = NULL;
if ((dcfg->gsb == NULL) || (dcfg->gsb == NOT_SET_P)) {
dcfg->gsb = apr_pcalloc(dcfg->mp, sizeof(gsb_db));
if (dcfg->gsb == NULL) {
return -1;
}
}
dcfg->gsb->db = NULL;
dcfg->gsb->dbfn = apr_pstrdup(dcfg->mp, dbfn);
return gsb_db_create(dcfg, error_msg);
}
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