+/*********************************************************************
+ *
+ * Function : execute_client_body_taggers
+ *
+ * Description : Executes client body taggers for the request that is
+ * buffered in the client_iob.
+ * XXX: Lots of code shared with header_tagger
+ *
+ * Parameters :
+ * 1 : csp = Current client state (buffers, headers, etc...)
+ * 2 : content_length = content length.
+ *
+ * Returns : XXX
+ *
+ *********************************************************************/
+jb_err execute_client_body_taggers(struct client_state *csp, size_t content_length)
+{
+ enum filter_type wanted_filter_type = FT_CLIENT_BODY_TAGGER;
+ int multi_action_index = ACTION_MULTI_CLIENT_BODY_TAGGER;
+ pcrs_job *job;
+
+ struct re_filterfile_spec *b;
+ struct list_entry *tag_name;
+
+ assert(client_body_taggers_enabled(csp->action));
+
+ if (content_length == 0)
+ {
+ /*
+ * No content, no tagging necessary.
+ */
+ return JB_ERR_OK;
+ }
+
+ log_error(LOG_LEVEL_INFO, "Got to execute tagger on %N",
+ content_length, csp->client_iob->cur);
+
+ if (list_is_empty(csp->action->multi[multi_action_index])
+ || filters_available(csp) == FALSE)
+ {
+ /* Return early if no taggers apply or if none are available. */
+ return JB_ERR_OK;
+ }
+
+ /* Execute all applying taggers */
+ for (tag_name = csp->action->multi[multi_action_index]->first;
+ NULL != tag_name; tag_name = tag_name->next)
+ {
+ char *modified_tag = NULL;
+ char *tag = csp->client_iob->cur;
+ size_t size = content_length;
+ pcrs_job *joblist;
+
+ b = get_filter(csp, tag_name->str, wanted_filter_type);
+ if (b == NULL)
+ {
+ continue;
+ }
+
+ joblist = b->joblist;
+
+ if (b->dynamic) joblist = compile_dynamic_pcrs_job_list(csp, b);
+
+ if (NULL == joblist)
+ {
+ log_error(LOG_LEVEL_TAGGING,
+ "Tagger %s has empty joblist. Nothing to do.", b->name);
+ continue;
+ }
+
+ /* execute their pcrs_joblist on the body. */
+ for (job = joblist; NULL != job; job = job->next)
+ {
+ const int hits = pcrs_execute(job, tag, size, &modified_tag, &size);
+
+ if (0 < hits)
+ {
+ /* Success, continue with the modified version. */
+ if (tag != csp->client_iob->cur)
+ {
+ freez(tag);
+ }
+ tag = modified_tag;
+ }
+ else
+ {
+ /* Tagger doesn't match */
+ if (0 > hits)
+ {
+ /* Regex failure, log it but continue anyway. */
+ log_error(LOG_LEVEL_ERROR,
+ "Problems with tagger \'%s\': %s",
+ b->name, pcrs_strerror(hits));
+ }
+ freez(modified_tag);
+ }
+ }
+
+ if (b->dynamic) pcrs_free_joblist(joblist);
+
+ /* If this tagger matched */
+ if (tag != csp->client_iob->cur)
+ {
+ if (0 == size)
+ {
+ /*
+ * There is no technical limitation which makes
+ * it impossible to use empty tags, but I assume
+ * no one would do it intentionally.
+ */
+ freez(tag);
+ log_error(LOG_LEVEL_TAGGING,
+ "Tagger \'%s\' created an empty tag. Ignored.", b->name);
+ continue;
+ }
+
+ if (list_contains_item(csp->action->multi[ACTION_MULTI_SUPPRESS_TAG], tag))
+ {
+ log_error(LOG_LEVEL_TAGGING,
+ "Tagger \'%s\' didn't add tag \'%s\': suppressed",
+ b->name, tag);
+ freez(tag);
+ continue;
+ }
+
+ if (!list_contains_item(csp->tags, tag))
+ {
+ if (JB_ERR_OK != enlist(csp->tags, tag))
+ {
+ log_error(LOG_LEVEL_ERROR,
+ "Insufficient memory to add tag \'%s\', "
+ "based on tagger \'%s\'",
+ tag, b->name);
+ }
+ else
+ {
+ char *action_message;
+ /*
+ * update the action bits right away, to make
+ * tagging based on tags set by earlier taggers
+ * of the same kind possible.
+ */
+ if (update_action_bits_for_tag(csp, tag))
+ {
+ action_message = "Action bits updated accordingly.";
+ }
+ else
+ {
+ action_message = "No action bits update necessary.";
+ }
+
+ log_error(LOG_LEVEL_TAGGING,
+ "Tagger \'%s\' added tag \'%s\'. %s",
+ b->name, tag, action_message);
+ }
+ }
+ else
+ {
+ /* XXX: Is this log-worthy? */
+ log_error(LOG_LEVEL_TAGGING,
+ "Tagger \'%s\' didn't add tag \'%s\'. Tag already present",
+ b->name, tag);
+ }
+ freez(tag);
+ }
+ }
+
+ return JB_ERR_OK;
+}
+
+
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