/**
* Creates a new multipart/form-data parser.
*
* @param boundary
* @return New parser, or NULL on memory allocation failure.
*/
htp_mpartp_t * htp_mpartp_create(htp_connp_t *connp, char *boundary) {
if ((connp == NULL)||(boundary == NULL)) return NULL;
htp_mpartp_t *mpartp = calloc(1, sizeof (htp_mpartp_t));
if (mpartp == NULL) return NULL;
mpartp->connp = connp;
mpartp->boundary_pieces = bstr_builder_create();
if (mpartp->boundary_pieces == NULL) {
htp_mpartp_destroy(&mpartp);
return NULL;
}
mpartp->part_pieces = bstr_builder_create();
if (mpartp->part_pieces == NULL) {
htp_mpartp_destroy(&mpartp);
return NULL;
}
mpartp->parts = list_array_create(64);
if (mpartp->parts == NULL) {
htp_mpartp_destroy(&mpartp);
return NULL;
}
// Copy the boundary and convert it to lowercase
mpartp->boundary_len = strlen(boundary) + 4 + 1;
mpartp->boundary = malloc(mpartp->boundary_len + 1);
if (mpartp->boundary == NULL) {
htp_mpartp_destroy(&mpartp);
return NULL;
}
mpartp->boundary[0] = CR;
mpartp->boundary[1] = LF;
mpartp->boundary[2] = '-';
mpartp->boundary[3] = '-';
size_t i = 4;
while (i < mpartp->boundary_len) {
mpartp->boundary[i] = tolower((int) ((unsigned char) boundary[i - 4]));
i++;
}
mpartp->state = MULTIPART_STATE_BOUNDARY;
mpartp->bpos = 2;
mpartp->extract_limit = MULTIPART_DEFAULT_FILE_EXTRACT_LIMIT;
mpartp->handle_data = htp_mpartp_handle_data;
mpartp->handle_boundary = htp_mpartp_handle_boundary;
return mpartp;
}
void htp_tx_destroy_incomplete(htp_tx_t *tx) {
if (tx == NULL) return;
// Disconnect transaction from other structures.
htp_conn_remove_tx(tx->conn, tx);
htp_connp_tx_remove(tx->connp, tx);
// Request fields.
bstr_free(tx->request_line);
bstr_free(tx->request_method);
bstr_free(tx->request_uri);
bstr_free(tx->request_protocol);
bstr_free(tx->request_content_type);
bstr_free(tx->request_hostname);
htp_uri_free(tx->parsed_uri_raw);
htp_uri_free(tx->parsed_uri);
// Request_headers.
if (tx->request_headers != NULL) {
htp_header_t *h = NULL;
for (size_t i = 0, n = htp_table_size(tx->request_headers); i < n; i++) {
h = htp_table_get_index(tx->request_headers, i, NULL);
bstr_free(h->name);
bstr_free(h->value);
free(h);
}
htp_table_destroy(tx->request_headers);
}
// Request parsers.
htp_urlenp_destroy(tx->request_urlenp_query);
htp_urlenp_destroy(tx->request_urlenp_body);
htp_mpartp_destroy(tx->request_mpartp);
// Request parameters.
htp_param_t *param = NULL;
for (size_t i = 0, n = htp_table_size(tx->request_params); i < n; i++) {
param = htp_table_get_index(tx->request_params, i, NULL);
free(param->name);
free(param->value);
free(param);
}
htp_table_destroy(tx->request_params);
// Request cookies.
if (tx->request_cookies != NULL) {
bstr *b = NULL;
for (size_t i = 0, n = htp_table_size(tx->request_cookies); i < n; i++) {
b = htp_table_get_index(tx->request_cookies, i, NULL);
bstr_free(b);
}
htp_table_destroy(tx->request_cookies);
}
htp_hook_destroy(tx->hook_request_body_data);
// Response fields.
bstr_free(tx->response_line);
bstr_free(tx->response_protocol);
bstr_free(tx->response_status);
bstr_free(tx->response_message);
bstr_free(tx->response_content_type);
// Destroy response headers.
if (tx->response_headers != NULL) {
htp_header_t *h = NULL;
for (size_t i = 0, n = htp_table_size(tx->response_headers); i < n; i++) {
h = htp_table_get_index(tx->response_headers, i, NULL);
bstr_free(h->name);
bstr_free(h->value);
free(h);
}
htp_table_destroy(tx->response_headers);
}
// If we're using a private configuration structure, destroy it.
if (tx->is_config_shared == HTP_CONFIG_PRIVATE) {
htp_config_destroy(tx->cfg);
}
free(tx);
}
void htp_tx_destroy(htp_tx_t *tx) {
bstr_free(tx->request_line);
bstr_free(tx->request_line_raw);
bstr_free(tx->request_method);
bstr_free(tx->request_uri);
bstr_free(tx->request_uri_normalized);
bstr_free(tx->request_protocol);
bstr_free(tx->request_headers_sep);
if (tx->parsed_uri != NULL) {
bstr_free(tx->parsed_uri->scheme);
bstr_free(tx->parsed_uri->username);
bstr_free(tx->parsed_uri->password);
bstr_free(tx->parsed_uri->hostname);
bstr_free(tx->parsed_uri->port);
bstr_free(tx->parsed_uri->path);
bstr_free(tx->parsed_uri->query);
bstr_free(tx->parsed_uri->fragment);
free(tx->parsed_uri);
}
if (tx->parsed_uri_incomplete != NULL) {
bstr_free(tx->parsed_uri_incomplete->scheme);
bstr_free(tx->parsed_uri_incomplete->username);
bstr_free(tx->parsed_uri_incomplete->password);
bstr_free(tx->parsed_uri_incomplete->hostname);
bstr_free(tx->parsed_uri_incomplete->port);
bstr_free(tx->parsed_uri_incomplete->path);
bstr_free(tx->parsed_uri_incomplete->query);
bstr_free(tx->parsed_uri_incomplete->fragment);
free(tx->parsed_uri_incomplete);
}
// Destroy request_header_lines.
if (tx->request_header_lines != NULL) {
for (int i = 0, n = htp_list_size(tx->request_header_lines); i < n; i++) {
htp_header_line_t *hl = htp_list_get(tx->request_header_lines, i);
bstr_free(hl->line);
// No need to destroy hl->header because
// htp_header_line_t does not own it.
free(hl);
}
htp_list_destroy(tx->request_header_lines);
tx->request_header_lines = NULL;
}
// Destroy request_headers.
if (tx->request_headers != NULL) {
htp_header_t *h = NULL;
for (int i = 0, n = htp_table_size(tx->request_headers); i < n; i++) {
h = htp_table_get_index(tx->request_headers, i, NULL);
bstr_free(h->name);
bstr_free(h->value);
free(h);
}
htp_table_destroy(tx->request_headers);
}
if (tx->request_headers_raw != NULL) {
bstr_free(tx->request_headers_raw);
}
if (tx->response_headers_raw != NULL) {
bstr_free(tx->response_headers_raw);
}
bstr_free(tx->response_line);
bstr_free(tx->response_line_raw);
bstr_free(tx->response_protocol);
bstr_free(tx->response_status);
bstr_free(tx->response_message);
bstr_free(tx->response_headers_sep);
// Destroy response_header_lines.
if (tx->response_header_lines != NULL) {
for (int i = 0, n = htp_list_size(tx->response_header_lines); i < n; i++) {
htp_header_line_t *hl = htp_list_get(tx->response_header_lines, i);
bstr_free(hl->line);
// No need to destroy hl->header because
// htp_header_line_t does not own it.
free(hl);
}
htp_list_destroy(tx->response_header_lines);
tx->response_header_lines = NULL;
}
// Destroy response headers.
if (tx->response_headers != NULL) {
htp_header_t *h = NULL;
for (int i = 0, n = htp_table_size(tx->response_headers); i < n; i++) {
h = htp_table_get_index(tx->response_headers, i, NULL);
bstr_free(h->name);
bstr_free(h->value);
free(h);
}
htp_table_destroy(tx->response_headers);
}
// Tell the connection to remove this transaction from the list.
htp_conn_remove_tx(tx->conn, tx);
// Invalidate the pointer to this transactions held
// by the connection parser. This is to allow a transaction
// to be destroyed from within the final response callback.
if (tx->connp != NULL) {
if (tx->connp->out_tx == tx) {
tx->connp->out_tx = NULL;
}
}
bstr_free(tx->request_content_type);
bstr_free(tx->response_content_type);
// Parsers
htp_urlenp_destroy(tx->request_urlenp_query);
htp_urlenp_destroy(tx->request_urlenp_body);
htp_mpartp_destroy(tx->request_mpartp);
// Request parameters
htp_param_t *param = NULL;
for (int i = 0, n = htp_table_size(tx->request_params); i < n; i++) {
param = htp_table_get_index(tx->request_params, i, NULL);
free(param->name);
free(param->value);
free(param);
}
htp_table_destroy(tx->request_params);
// Request cookies
if (tx->request_cookies != NULL) {
bstr *b = NULL;
for (int i = 0, n = htp_table_size(tx->request_cookies); i < n; i++) {
b = htp_table_get_index(tx->request_cookies, i, NULL);
bstr_free(b);
}
htp_table_destroy(tx->request_cookies);
}
htp_hook_destroy(tx->hook_request_body_data);
// If we're using a private configuration, destroy it.
if (tx->is_config_shared == HTP_CONFIG_PRIVATE) {
htp_config_destroy(tx->cfg);
}
free(tx);
}
