dpl_status_t dpl_srws_get_metadata_from_headers(const dpl_dict_t *headers, dpl_dict_t *metadata) { int ret; dpl_var_t *var; int value_len; char *orig; int orig_len; struct mdparse_data arg; DPRINTF("srws_get_metadata_from_headers\n"); memset(&arg, 0, sizeof (arg)); var = dpl_dict_get(headers, DPL_SRWS_X_BIZ_USERMD); if (NULL == var) { //no metadata; ret = DPL_SUCCESS; goto end; } DPRINTF("val=%s\n", var->value); //decode base64 value_len = strlen(var->value); if (value_len == 0) return DPL_EINVAL; orig_len = DPL_BASE64_ORIG_LENGTH(value_len); orig = alloca(orig_len); orig_len = dpl_base64_decode((u_char *) var->value, value_len, (u_char *) orig); //dpl_dump_simple(orig, orig_len); arg.metadata = metadata; arg.orig = orig; arg.orig_len = orig_len; ret = dpl_ntinydb_list(orig, orig_len, cb_ntinydb, &arg); if (DPL_SUCCESS != ret) goto end; ret = DPL_SUCCESS; end: return ret; }
dpl_status_t dpl_cdmi_get(dpl_ctx_t *ctx, const char *bucket, const char *resource, const char *subresource, const dpl_option_t *option, dpl_ftype_t object_type, const dpl_condition_t *condition, const dpl_range_t *range, char **data_bufp, unsigned int *data_lenp, dpl_dict_t **metadatap, dpl_sysmd_t *sysmdp, char **locationp) { int ret, ret2; dpl_conn_t *conn = NULL; char header[dpl_header_size]; u_int header_len; struct iovec iov[10]; int n_iov = 0; int connection_close = 0; char *data_buf = NULL; u_int data_len; dpl_dict_t *headers_request = NULL; dpl_dict_t *headers_reply = NULL; dpl_req_t *req = NULL; int raw = 0; dpl_value_t *val = NULL; dpl_dict_var_t *var = NULL; dpl_dict_var_t *encoding = NULL; int value_len; int orig_len; char *orig_buf = NULL; dpl_cdmi_req_mask_t req_mask = 0u; char *location; DPL_TRACE(ctx, DPL_TRACE_BACKEND, ""); if (option) { if (option->mask & DPL_OPTION_HTTP_COMPAT) req_mask |= DPL_CDMI_REQ_HTTP_COMPAT; if (option->mask & DPL_OPTION_RAW) raw = 1; } req = dpl_req_new(ctx); if (NULL == req) { ret = DPL_ENOMEM; goto end; } dpl_req_set_method(req, DPL_METHOD_GET); if (NULL != bucket) { ret2 = dpl_req_set_bucket(req, bucket); if (DPL_SUCCESS != ret2) { ret = ret2; goto end; } } ret2 = dpl_cdmi_req_set_resource(req, resource); if (DPL_SUCCESS != ret2) { ret = ret2; goto end; } if (NULL == subresource) { if (DPL_FTYPE_REG == object_type) { subresource = "valuetransferencoding"; } } if (NULL != subresource) { ret2 = dpl_req_set_subresource(req, subresource); if (DPL_SUCCESS != ret2) { ret = ret2; goto end; } } if (NULL != condition) { dpl_req_set_condition(req, condition); } if (range) { ret2 = dpl_cdmi_req_add_range(req, req_mask, range); if (DPL_SUCCESS != ret2) { ret = ret2; goto end; } } dpl_req_set_object_type(req, object_type); //build request ret2 = dpl_cdmi_req_build(req, 0, &headers_request, NULL, NULL); if (DPL_SUCCESS != ret2) { ret = ret2; goto end; } //contact default host dpl_req_rm_behavior(req, DPL_BEHAVIOR_VIRTUAL_HOSTING); ret2 = dpl_try_connect(ctx, req, &conn); if (DPL_SUCCESS != ret2) { ret = ret2; goto end; } ret2 = dpl_add_host_to_headers(req, headers_request); if (DPL_SUCCESS != ret2) { ret = ret2; goto end; } ret2 = dpl_req_gen_http_request(ctx, req, headers_request, NULL, header, sizeof (header), &header_len); if (DPL_SUCCESS != ret2) { ret = ret2; goto end; } iov[n_iov].iov_base = header; iov[n_iov].iov_len = header_len; n_iov++; //final crlf iov[n_iov].iov_base = "\r\n"; iov[n_iov].iov_len = 2; n_iov++; ret2 = dpl_conn_writev_all(conn, iov, n_iov, conn->ctx->write_timeout); if (DPL_SUCCESS != ret2) { DPL_TRACE(conn->ctx, DPL_TRACE_ERR, "writev failed"); connection_close = 1; ret = ret2; goto end; } if (option && option->mask & DPL_OPTION_NOALLOC) { data_buf = *data_bufp; data_len = *data_lenp; } ret2 = dpl_read_http_reply_ext(conn, 1, (option && option->mask & DPL_OPTION_NOALLOC) ? 1 : 0, &data_buf, &data_len, &headers_reply, &connection_close); if (DPL_SUCCESS != ret2) { if (DPL_EREDIRECT == ret2) { if (NULL != locationp) { location = dpl_location(headers_reply); if (NULL == location) { DPL_TRACE(conn->ctx, DPL_TRACE_ERR, "missing \"Location\" header in redirect HTTP response"); connection_close = 1; ret = DPL_FAILURE; goto end; } *locationp = strdup(location); } } ret = ret2; goto end; } if (req_mask & DPL_CDMI_REQ_HTTP_COMPAT) { //metadata are in headers ret2 = dpl_cdmi_get_metadata_from_headers(headers_reply, metadatap, sysmdp); if (DPL_SUCCESS != ret2) { ret = ret2; goto end; } } else { if (!raw) { char *tmp; //extract data+metadata from json ret2 = dpl_cdmi_parse_json_buffer(ctx, data_buf, data_len, &val); if (DPL_SUCCESS != ret2) { ret = ret2; goto end; } if (DPL_VALUE_SUBDICT != val->type) { ret = DPL_EINVAL; goto end; } ret2 = dpl_cdmi_get_metadata_from_values(val->subdict, metadatap, sysmdp); if (DPL_SUCCESS != ret2) { ret = ret2; goto end; } //find the value object ret2 = dpl_dict_get_lowered(val->subdict, "value", &var); if (DPL_SUCCESS != ret2) { ret = ret2; goto end; } if (DPL_VALUE_STRING != var->val->type) { ret = DPL_EINVAL; goto end; } ret2 = dpl_dict_get_lowered(val->subdict, "valuetransferencoding", &encoding); if (DPL_SUCCESS != ret2) { ret = ret2; goto end; } if (DPL_VALUE_STRING != encoding->val->type) { ret = DPL_EINVAL; goto end; } value_len = var->val->string->len; if (0 == strcmp(dpl_sbuf_get_str(encoding->val->string), "base64")) { orig_len = DPL_BASE64_ORIG_LENGTH(value_len); orig_buf = malloc(orig_len); if (NULL == orig_buf) { ret = DPL_ENOMEM; goto end; } orig_len = dpl_base64_decode((u_char *) dpl_sbuf_get_str(var->val->string), value_len, (u_char *) orig_buf); //swap pointers tmp = data_buf; data_buf = orig_buf; orig_buf = tmp; data_len = orig_len; } else if (0 == strcmp(dpl_sbuf_get_str(encoding->val->string), "utf-8")) { orig_buf = data_buf; orig_len = data_len; data_buf = malloc(value_len + 1); if (NULL == data_buf) { ret = DPL_ENOMEM; goto end; } memcpy(data_buf, dpl_sbuf_get_str(var->val->string), value_len); data_buf[value_len] = '\0'; data_len = value_len; } else { DPL_TRACE(conn->ctx, DPL_TRACE_ERR, "unknown \"valuetransferencoding\" received: \"%s\"", encoding->val->string); ret = DPL_EINVAL; goto end; } } } if (NULL != data_bufp) { *data_bufp = data_buf; data_buf = NULL; //consume it } if (NULL != data_lenp) *data_lenp = data_len; ret = DPL_SUCCESS; end: if (NULL != orig_buf) free(orig_buf); if (NULL != val) dpl_value_free(val); if ((option && !(option->mask & DPL_OPTION_NOALLOC)) && NULL != data_buf) free(data_buf); if (NULL != conn) { if (1 == connection_close) dpl_conn_terminate(conn); else dpl_conn_release(conn); } if (NULL != headers_reply) dpl_dict_free(headers_reply); if (NULL != headers_request) dpl_dict_free(headers_request); if (NULL != req) dpl_req_free(req); DPL_TRACE(ctx, DPL_TRACE_BACKEND, "ret=%d", ret); return ret; }