/* called when the object for the service is called */ static int api_dbus_server_on_object_called(sd_bus_message *message, void *userdata, sd_bus_error *ret_error) { int rc; const char *method; const char *uuid; struct dbus_req *dreq; struct api_dbus *api = userdata; struct afb_req areq; uint32_t flags; /* check the interface */ if (strcmp(sd_bus_message_get_interface(message), api->name) != 0) return 0; /* get the method */ method = sd_bus_message_get_member(message); /* create the request */ dreq = calloc(1 , sizeof *dreq); if (dreq == NULL) { sd_bus_reply_method_errorf(message, SD_BUS_ERROR_NO_MEMORY, "out of memory"); return 1; } /* get the data */ rc = sd_bus_message_read(message, "ssu", &dreq->request, &uuid, &flags); if (rc < 0) { sd_bus_reply_method_errorf(message, SD_BUS_ERROR_INVALID_SIGNATURE, "invalid signature"); free(dreq); return 1; } /* connect to the context */ if (afb_context_connect(&dreq->context, uuid, NULL) < 0) { sd_bus_reply_method_errorf(message, SD_BUS_ERROR_NO_MEMORY, "out of memory"); free(dreq); return 1; } /* fulfill the request and emit it */ dreq->context.flags = flags; dreq->message = sd_bus_message_ref(message); dreq->json = NULL; dreq->refcount = 1; areq.itf = &dbus_req_itf; areq.closure = dreq; afb_apis_call_(areq, &dreq->context, api->api, method); dbus_req_unref(dreq); return 1; }
static void bus_method_resolve_address_complete(DnsQuery *q) { _cleanup_bus_message_unref_ sd_bus_message *reply = NULL; _cleanup_(dns_answer_unrefp) DnsAnswer *answer = NULL; unsigned added = 0, i; int r; assert(q); if (q->state != DNS_TRANSACTION_SUCCESS) { r = reply_query_state(q); goto finish; } r = sd_bus_message_new_method_return(q->request, &reply); if (r < 0) goto finish; r = sd_bus_message_append(reply, "i", q->answer_ifindex); if (r < 0) goto finish; r = sd_bus_message_open_container(reply, 'a', "s"); if (r < 0) goto finish; if (q->answer) { answer = dns_answer_ref(q->answer); for (i = 0; i < answer->n_rrs; i++) { r = dns_question_matches_rr(q->question, answer->rrs[i]); if (r < 0) goto finish; if (r == 0) continue; r = sd_bus_message_append(reply, "s", answer->rrs[i]->ptr.name); if (r < 0) goto finish; added ++; } } if (added <= 0) { _cleanup_free_ char *ip = NULL; in_addr_to_string(q->request_family, &q->request_address, &ip); r = sd_bus_reply_method_errorf(q->request, BUS_ERROR_NO_SUCH_RR, "Address '%s' does not have any RR of requested type", ip); goto finish; } r = sd_bus_message_close_container(reply); if (r < 0) goto finish; r = sd_bus_message_append(reply, "t", SD_RESOLVED_FLAGS_MAKE(q->answer_protocol, q->answer_family)); if (r < 0) goto finish; r = sd_bus_send(q->manager->bus, reply, NULL); finish: if (r < 0) { log_error_errno(r, "Failed to send address reply: %m"); sd_bus_reply_method_errno(q->request, -r, NULL); } dns_query_free(q); }
static int reply_query_state(DnsQuery *q) { _cleanup_free_ char *ip = NULL; const char *name; int r; if (q->request_hostname) name = q->request_hostname; else { r = in_addr_to_string(q->request_family, &q->request_address, &ip); if (r < 0) return r; name = ip; } switch (q->state) { case DNS_TRANSACTION_NO_SERVERS: return sd_bus_reply_method_errorf(q->request, BUS_ERROR_NO_NAME_SERVERS, "No appropriate name servers or networks for name found"); case DNS_TRANSACTION_TIMEOUT: return sd_bus_reply_method_errorf(q->request, SD_BUS_ERROR_TIMEOUT, "Query timed out"); case DNS_TRANSACTION_ATTEMPTS_MAX_REACHED: return sd_bus_reply_method_errorf(q->request, SD_BUS_ERROR_TIMEOUT, "All attempts to contact name servers or networks failed"); case DNS_TRANSACTION_INVALID_REPLY: return sd_bus_reply_method_errorf(q->request, BUS_ERROR_INVALID_REPLY, "Received invalid reply"); case DNS_TRANSACTION_RESOURCES: return sd_bus_reply_method_errorf(q->request, BUS_ERROR_NO_RESOURCES, "Not enough resources"); case DNS_TRANSACTION_ABORTED: return sd_bus_reply_method_errorf(q->request, BUS_ERROR_ABORTED, "Query aborted"); case DNS_TRANSACTION_FAILURE: { _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL; if (q->answer_rcode == DNS_RCODE_NXDOMAIN) sd_bus_error_setf(&error, _BUS_ERROR_DNS "NXDOMAIN", "'%s' not found", name); else { const char *rc, *n; char p[3]; /* the rcode is 4 bits long */ rc = dns_rcode_to_string(q->answer_rcode); if (!rc) { sprintf(p, "%i", q->answer_rcode); rc = p; } n = strappenda(_BUS_ERROR_DNS, rc); sd_bus_error_setf(&error, n, "Could not resolve '%s', server or network returned error %s", name, rc); } return sd_bus_reply_method_error(q->request, &error); } case DNS_TRANSACTION_NULL: case DNS_TRANSACTION_PENDING: case DNS_TRANSACTION_SUCCESS: default: assert_not_reached("Impossible state"); } }
static void bus_method_resolve_hostname_complete(DnsQuery *q) { _cleanup_(dns_resource_record_unrefp) DnsResourceRecord *cname = NULL, *canonical = NULL; _cleanup_bus_message_unref_ sd_bus_message *reply = NULL; _cleanup_(dns_answer_unrefp) DnsAnswer *answer = NULL; unsigned added = 0, i; int r; assert(q); if (q->state != DNS_TRANSACTION_SUCCESS) { r = reply_query_state(q); goto finish; } r = sd_bus_message_new_method_return(q->request, &reply); if (r < 0) goto finish; r = sd_bus_message_append(reply, "i", q->answer_ifindex); if (r < 0) goto finish; r = sd_bus_message_open_container(reply, 'a', "(iay)"); if (r < 0) goto finish; if (q->answer) { answer = dns_answer_ref(q->answer); for (i = 0; i < answer->n_rrs; i++) { r = dns_question_matches_rr(q->question, answer->rrs[i]); if (r < 0) goto finish; if (r == 0) { /* Hmm, if this is not an address record, maybe it's a cname? If so, remember this */ r = dns_question_matches_cname(q->question, answer->rrs[i]); if (r < 0) goto finish; if (r > 0) cname = dns_resource_record_ref(answer->rrs[i]); continue; } r = append_address(reply, answer->rrs[i]); if (r < 0) goto finish; if (!canonical) canonical = dns_resource_record_ref(answer->rrs[i]); added ++; } } if (added <= 0) { if (!cname) { r = sd_bus_reply_method_errorf(q->request, BUS_ERROR_NO_SUCH_RR, "'%s' does not have any RR of requested type", q->request_hostname); goto finish; } /* This has a cname? Then update the query with the * new cname. */ r = dns_query_cname_redirect(q, cname->cname.name); if (r < 0) { if (r == -ELOOP) r = sd_bus_reply_method_errorf(q->request, BUS_ERROR_CNAME_LOOP, "CNAME loop on '%s'", q->request_hostname); else r = sd_bus_reply_method_errno(q->request, -r, NULL); goto finish; } /* Before we restart the query, let's see if any of * the RRs we already got already answers our query */ for (i = 0; i < answer->n_rrs; i++) { r = dns_question_matches_rr(q->question, answer->rrs[i]); if (r < 0) goto finish; if (r == 0) continue; r = append_address(reply, answer->rrs[i]); if (r < 0) goto finish; if (!canonical) canonical = dns_resource_record_ref(answer->rrs[i]); added++; } /* If we didn't find anything, then let's restart the * query, this time with the cname */ if (added <= 0) { r = dns_query_go(q); if (r == -ESRCH) { r = sd_bus_reply_method_errorf(q->request, BUS_ERROR_NO_NAME_SERVERS, "No appropriate name servers or networks for name found"); goto finish; } if (r < 0) { r = sd_bus_reply_method_errno(q->request, -r, NULL); goto finish; } return; } } r = sd_bus_message_close_container(reply); if (r < 0) goto finish; /* Return the precise spelling and uppercasing reported by the server */ assert(canonical); r = sd_bus_message_append(reply, "st", DNS_RESOURCE_KEY_NAME(canonical->key), SD_RESOLVED_FLAGS_MAKE(q->answer_protocol, q->answer_family)); if (r < 0) goto finish; r = sd_bus_send(q->manager->bus, reply, NULL); finish: if (r < 0) { log_error_errno(r, "Failed to send hostname reply: %m"); sd_bus_reply_method_errno(q->request, -r, NULL); } dns_query_free(q); }
int bus_image_common_attach( Manager *m, sd_bus_message *message, const char *name_or_path, Image *image, sd_bus_error *error) { _cleanup_strv_free_ char **matches = NULL; PortableChange *changes = NULL; PortableFlags flags = 0; const char *profile, *copy_mode; size_t n_changes = 0; int runtime, r; assert(message); assert(name_or_path || image); if (!m) { assert(image); m = image->userdata; } r = sd_bus_message_read_strv(message, &matches); if (r < 0) return r; r = sd_bus_message_read(message, "sbs", &profile, &runtime, ©_mode); if (r < 0) return r; if (streq(copy_mode, "symlink")) flags |= PORTABLE_PREFER_SYMLINK; else if (streq(copy_mode, "copy")) flags |= PORTABLE_PREFER_COPY; else if (!isempty(copy_mode)) return sd_bus_reply_method_errorf(message, SD_BUS_ERROR_INVALID_ARGS, "Unknown copy mode '%s'", copy_mode); if (runtime) flags |= PORTABLE_RUNTIME; r = bus_image_acquire(m, message, name_or_path, image, BUS_IMAGE_AUTHENTICATE_ALL, "org.freedesktop.portable1.attach-images", &image, error); if (r < 0) return r; if (r == 0) /* Will call us back */ return 1; r = portable_attach( sd_bus_message_get_bus(message), image->path, matches, profile, flags, &changes, &n_changes, error); if (r < 0) goto finish; r = reply_portable_changes(message, changes, n_changes); finish: portable_changes_free(changes, n_changes); return r; }