ib_status_t ib_capture_set_item(
ib_field_t *capture,
int num,
ib_mm_t mm,
const ib_field_t *in_field
)
{
assert(capture != NULL);
assert(num >= 0);
if (num > MAX_CAPTURE_NUM) {
return IB_EINVAL;
}
ib_status_t rc;
ib_field_t *field;
ib_list_t *list;
ib_list_node_t *node;
ib_list_node_t *next;
const char *name;
name = ib_capture_name(num);
rc = get_capture_list(capture, &list);
if (rc != IB_OK) {
return rc;
}
/* Remove any nodes with the same name */
IB_LIST_LOOP_SAFE(list, node, next) {
ib_field_t *tmp_field = (ib_field_t *)node->data;
if (strncmp(name, tmp_field->name, tmp_field->nlen) == 0) {
ib_list_node_remove(list, node);
}
}
/**
* Set the matches from a multi-match dfa as a list in the CAPTURE
* collection (all with "0" key).
*
* @param[in] tx Current transaction.
* @param[in] capture Collection to capture to.
* @param[in] ovector The vector of integer pairs of matches from PCRE.
* @param[in] matches The number of matches.
* @param[in] subject The matched-against string data.
*
* @returns IB_OK or IB_EALLOC.
*/
static
ib_status_t pcre_dfa_set_match(
ib_tx_t *tx,
ib_field_t *capture,
int *ovector,
int matches,
const char *subject
)
{
assert(tx != NULL);
assert(tx->ib != NULL);
assert(capture != NULL);
assert(ovector != NULL);
int i;
/* We have a match! Now populate TX:0-9 in tx->data. */
ib_log_debug2_tx(tx, "DFA populating %d matches", matches);
for (i = 0; i < matches; ++i)
{
size_t match_len;
const char *match_start;
const char *name;
ib_bytestr_t *bs;
ib_field_t *field;
ib_status_t rc;
/* Readability. Mark the start and length of the string. */
match_start = subject+ovector[i * 2];
match_len = ovector[i * 2 + 1] - ovector[i * 2];
/* Create a byte-string representation */
rc = ib_bytestr_dup_mem(&bs,
tx->mp,
(const uint8_t*)match_start,
match_len);
if (rc != IB_OK) {
return rc;
}
/* Create a field to hold the byte-string */
name = ib_capture_name(0);
rc = ib_field_create(&field, tx->mp, name, strlen(name),
IB_FTYPE_BYTESTR, ib_ftype_bytestr_in(bs));
if (rc != IB_OK) {
return rc;
}
/* Add it to the capture collection */
rc = ib_capture_add_item(capture, field);
if (rc != IB_OK) {
return rc;
}
}
return IB_OK;
}
/**
* Eudoxus first match callback function. Called when a match occurs.
*
* Always returns IA_EUDOXUS_CMD_STOP to stop matching (unless an
* error occurs). If capture is enabled the matched text will be stored in the
* capture variable.
*
* @param[in] engine Eudoxus engine.
* @param[in] output Output defined by automata.
* @param[in] output_length Length of output.
* @param[in] input Current location in the input (first character
* after the match).
* @param[in,out] cbdata Pointer to the ee_callback_data_t instance we are
* handling. This is needed for handling capture
* of the match.
* @return IA_EUDOXUS_CMD_ERROR on error, IA_EUDOXUS_CMD_STOP otherwise.
*/
static
ia_eudoxus_command_t ee_first_match_callback(ia_eudoxus_t* engine,
const char *output,
size_t output_length,
const uint8_t *input,
void *cbdata)
{
assert(cbdata != NULL);
assert(output != NULL);
ib_status_t rc;
uint32_t match_len;
const ee_callback_data_t *ee_cbdata = cbdata;
ib_tx_t *tx = ee_cbdata->tx;
ib_field_t *capture = ee_cbdata->capture;
ib_bytestr_t *bs;
ib_field_t *field;
const char *name;
assert(tx != NULL);
if (capture != NULL) {
if (output_length != sizeof(uint32_t)) {
return IA_EUDOXUS_CMD_ERROR;
}
match_len = *(uint32_t *)(output);
rc = ib_capture_clear(capture);
if (rc != IB_OK) {
ib_log_error_tx(tx, "Error clearing captures: %s",
ib_status_to_string(rc));
return IA_EUDOXUS_CMD_ERROR;
}
/* Create a byte-string representation */
rc = ib_bytestr_dup_mem(&bs,
tx->mp,
(input - match_len),
match_len);
if (rc != IB_OK) {
return IA_EUDOXUS_CMD_ERROR;
}
name = ib_capture_name(0);
rc = ib_field_create(&field, tx->mp, name, strlen(name),
IB_FTYPE_BYTESTR, ib_ftype_bytestr_in(bs));
if (rc != IB_OK) {
return IA_EUDOXUS_CMD_ERROR;
}
rc = ib_capture_set_item(capture, 0, tx->mp, field);
if (rc != IB_OK) {
return IA_EUDOXUS_CMD_ERROR;
}
}
return IA_EUDOXUS_CMD_STOP;
}
/**
* Set the matches into the given field name as .0, .1, .2 ... .9.
*
* @param[in] tx Current transaction.
* @param[in] capture Collection to capture to.
* @param[in] ovector The vector of integer pairs of matches from PCRE.
* @param[in] matches The number of matches.
* @param[in] subject The matched-against string data.
*
* @returns IB_OK or IB_EALLOC.
*/
static
ib_status_t pcre_set_matches(
const ib_tx_t *tx,
ib_field_t *capture,
int *ovector,
int matches,
const char *subject
)
{
assert(tx != NULL);
assert(tx->ib != NULL);
assert(capture != NULL);
assert(ovector != NULL);
ib_status_t rc;
int i;
rc = ib_capture_clear(capture);
if (rc != IB_OK) {
ib_log_error_tx(tx, "Error clearing captures: %s",
ib_status_to_string(rc));
}
/* We have a match! Now populate TX:0-9 in tx->data. */
ib_log_debug2_tx(tx, "REGEX populating %d matches", matches);
for (i = 0; i < matches; ++i)
{
/* The length of the match. */
size_t match_len;
/* The first character in the match. */
const char *match_start;
/* Field name */
const char *name;
/* Holder for a copy of the field value when creating a new field. */
ib_bytestr_t *bs;
/* Field holder. */
ib_field_t *field;
/* Readability. Mark the start and length of the string. */
match_start = subject+ovector[i*2];
match_len = ovector[i*2+1] - ovector[i*2];
/* Create a byte-string representation */
rc = ib_bytestr_dup_mem(&bs,
tx->mp,
(const uint8_t*)match_start,
match_len);
if (rc != IB_OK) {
return rc;
}
/* Create a field to hold the byte-string */
name = ib_capture_name(i);
rc = ib_field_create(&field, tx->mp, name, strlen(name),
IB_FTYPE_BYTESTR, ib_ftype_bytestr_in(bs));
if (rc != IB_OK) {
return rc;
}
/* Add it to the capture collection */
rc = ib_capture_set_item(capture, i, tx->mp, field);
if (rc != IB_OK) {
return rc;
}
}
return IB_OK;
}
