static ngx_int_t
ngx_http_echo_exec_filter_cmds(ngx_http_request_t *r,
ngx_http_echo_ctx_t *ctx, ngx_array_t *cmds,
ngx_uint_t *iterator)
{
ngx_int_t rc;
ngx_array_t *computed_args = NULL;
ngx_http_echo_cmd_t *cmd;
ngx_http_echo_cmd_t *cmd_elts;
ngx_array_t *opts = NULL;
for (cmd_elts = cmds->elts; *iterator < cmds->nelts; (*iterator)++) {
cmd = &cmd_elts[*iterator];
/* evaluate arguments for the current cmd (if any) */
if (cmd->args) {
computed_args = ngx_array_create(r->pool, cmd->args->nelts,
sizeof(ngx_str_t));
if (computed_args == NULL) {
return NGX_HTTP_INTERNAL_SERVER_ERROR;
}
opts = ngx_array_create(r->pool, 1, sizeof(ngx_str_t));
if (opts == NULL) {
return NGX_HTTP_INTERNAL_SERVER_ERROR;
}
rc = ngx_http_echo_eval_cmd_args(r, cmd, computed_args, opts);
if (rc != NGX_OK) {
ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
"Failed to evaluate arguments for "
"the directive.");
return rc;
}
}
/* do command dispatch based on the opcode */
switch (cmd->opcode) {
case echo_opcode_echo_before_body:
case echo_opcode_echo_after_body:
dd("exec echo_before_body or echo_after_body...");
rc = ngx_http_echo_exec_echo(r, ctx, computed_args,
1 /* in filter */, opts);
if (rc == NGX_ERROR || rc > NGX_OK) {
return rc;
}
break;
default:
break;
}
}
return NGX_OK;
}
ngx_int_t
ngx_http_echo_run_cmds(ngx_http_request_t *r)
{
ngx_http_echo_loc_conf_t *elcf;
ngx_http_echo_ctx_t *ctx;
ngx_int_t rc;
ngx_array_t *cmds;
ngx_array_t *computed_args = NULL;
ngx_http_echo_cmd_t *cmd;
ngx_http_echo_cmd_t *cmd_elts;
ngx_array_t *opts = NULL;
elcf = ngx_http_get_module_loc_conf(r, ngx_http_echo_module);
cmds = elcf->handler_cmds;
if (cmds == NULL) {
return NGX_DECLINED;
}
ctx = ngx_http_get_module_ctx(r, ngx_http_echo_module);
if (ctx == NULL) {
ctx = ngx_http_echo_create_ctx(r);
if (ctx == NULL) {
return NGX_HTTP_INTERNAL_SERVER_ERROR;
}
ngx_http_set_ctx(r, ctx, ngx_http_echo_module);
}
dd("exec handler: %.*s: %i", (int) r->uri.len, r->uri.data,
(int) ctx->next_handler_cmd);
cmd_elts = cmds->elts;
for (; ctx->next_handler_cmd < cmds->nelts; ctx->next_handler_cmd++) {
cmd = &cmd_elts[ctx->next_handler_cmd];
/* evaluate arguments for the current cmd (if any) */
if (cmd->args) {
computed_args = ngx_array_create(r->pool, cmd->args->nelts,
sizeof(ngx_str_t));
if (computed_args == NULL) {
return NGX_HTTP_INTERNAL_SERVER_ERROR;
}
opts = ngx_array_create(r->pool, 1, sizeof(ngx_str_t));
if (opts == NULL) {
return NGX_HTTP_INTERNAL_SERVER_ERROR;
}
rc = ngx_http_echo_eval_cmd_args(r, cmd, computed_args, opts);
if (rc != NGX_OK) {
ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
"Failed to evaluate arguments for "
"the directive.");
return rc;
}
}
/* do command dispatch based on the opcode */
switch (cmd->opcode) {
case echo_opcode_echo:
/* XXX moved the following code to a separate
* function */
dd("found echo opcode");
rc = ngx_http_echo_exec_echo(r, ctx, computed_args,
0 /* in filter */, opts);
break;
case echo_opcode_echo_request_body:
rc = ngx_http_echo_exec_echo_request_body(r, ctx);
break;
case echo_opcode_echo_location_async:
dd("found opcode echo location async...");
rc = ngx_http_echo_exec_echo_location_async(r, ctx,
computed_args);
break;
case echo_opcode_echo_location:
return ngx_http_echo_exec_echo_location(r, ctx, computed_args);
break;
case echo_opcode_echo_subrequest_async:
dd("found opcode echo subrequest async...");
rc = ngx_http_echo_exec_echo_subrequest_async(r, ctx,
computed_args);
break;
case echo_opcode_echo_subrequest:
return ngx_http_echo_exec_echo_subrequest(r, ctx, computed_args);
break;
case echo_opcode_echo_sleep:
return ngx_http_echo_exec_echo_sleep(r, ctx, computed_args);
break;
case echo_opcode_echo_flush:
rc = ngx_http_echo_exec_echo_flush(r, ctx);
break;
case echo_opcode_echo_blocking_sleep:
rc = ngx_http_echo_exec_echo_blocking_sleep(r, ctx,
computed_args);
break;
case echo_opcode_echo_reset_timer:
rc = ngx_http_echo_exec_echo_reset_timer(r, ctx);
break;
case echo_opcode_echo_duplicate:
rc = ngx_http_echo_exec_echo_duplicate(r, ctx, computed_args);
break;
case echo_opcode_echo_read_request_body:
ctx->wait_read_request_body = 0;
rc = ngx_http_echo_exec_echo_read_request_body(r, ctx);
#if defined(nginx_version) && nginx_version >= 8011
/* XXX read_client_request_body always increments the counter */
r->main->count--;
#endif
dd("read request body: %d", (int) rc);
if (rc == NGX_OK) {
continue;
}
ctx->wait_read_request_body = 1;
/* r->write_event_handler = ngx_http_request_empty_handler; */
return rc;
break;
case echo_opcode_echo_foreach_split:
rc = ngx_http_echo_exec_echo_foreach_split(r, ctx, computed_args);
break;
case echo_opcode_echo_end:
rc = ngx_http_echo_exec_echo_end(r, ctx);
break;
case echo_opcode_echo_exec:
dd("echo_exec");
return ngx_http_echo_exec_exec(r, ctx, computed_args);
break;
default:
ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
"Unknown opcode: %d", cmd->opcode);
return NGX_HTTP_INTERNAL_SERVER_ERROR;
break;
}
if (rc == NGX_ERROR || rc >= NGX_HTTP_SPECIAL_RESPONSE) {
return rc;
}
}
rc = ngx_http_echo_send_chain_link(r, ctx, NULL /* indicate LAST */);
if (rc == NGX_ERROR || rc >= NGX_HTTP_SPECIAL_RESPONSE) {
return rc;
}
return NGX_OK;
}
