diff options
Diffstat (limited to 'src/ipcpd/normal/enroll.c')
| -rw-r--r-- | src/ipcpd/normal/enroll.c | 263 |
1 files changed, 263 insertions, 0 deletions
diff --git a/src/ipcpd/normal/enroll.c b/src/ipcpd/normal/enroll.c new file mode 100644 index 00000000..695ceb1d --- /dev/null +++ b/src/ipcpd/normal/enroll.c @@ -0,0 +1,263 @@ +/* + * Ouroboros - Copyright (C) 2016 - 2017 + * + * Enrollment Task + * + * Dimitri Staessens <dimitri.staessens@intec.ugent.be> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + */ +#define OUROBOROS_PREFIX "enrollment" + +#include <ouroboros/config.h> +#include <ouroboros/cdap.h> +#include <ouroboros/dev.h> +#include <ouroboros/logs.h> +#include <ouroboros/rib.h> + +#include "ae.h" + +#include <assert.h> +#include <stdlib.h> +#include <string.h> + +#define DLR "/" +#define DIF_PATH DLR DIF_NAME +#define BOOT_PATH DLR BOOT_NAME +#define MEMBERS_PATH DLR MEMBERS_NAME + +int enroll_handle(int fd) +{ + struct cdap * ci; + cdap_key_t key; + enum cdap_opcode oc; + char * name; + uint8_t * buf; + uint8_t * data; + ssize_t len; + uint32_t flags; + + bool boot_r = false; + bool members_r = false; + bool dif_name_r = false; + + char * boot_ro = BOOT_PATH; + char * members_ro = MEMBERS_PATH; + char * dif_ro = DIF_PATH; + + if (flow_alloc_resp(fd, 0) < 0) { + flow_dealloc(fd); + LOG_ERR("Could not respond to request."); + return -1; + } + + ci = cdap_create(fd); + if (ci == NULL) { + flow_dealloc(fd); + LOG_ERR("Failed to create CDAP instance."); + return -1; + } + + while (!(boot_r && members_r && dif_name_r)) { + key = cdap_request_wait(ci, &oc, &name, &data, + (size_t *) &len , &flags); + + assert(key >= 0); + assert(name); + + if (data != NULL) { + free(data); + LOG_WARN("Received data with enrollment request."); + } + + if (oc != CDAP_READ) { + LOG_WARN("Invalid request."); + cdap_reply_send(ci, key, -1, NULL, 0); + cdap_destroy(ci); + flow_dealloc(fd); + free(name); + return -1; + } + + if (strcmp(name, boot_ro) == 0) { + boot_r = true; + } else if (strcmp(name, members_ro) == 0) { + members_r = true; + } else if (strcmp(name, dif_ro) == 0) { + dif_name_r = true; + } else { + LOG_WARN("Illegal read: %s.", name); + cdap_reply_send(ci, key, -1, NULL, 0); + cdap_destroy(ci); + flow_dealloc(fd); + free(name); + return -1; + } + + len = rib_pack(name, &buf, PACK_HASH_ROOT); + if (len < 0) { + LOG_ERR("Failed to pack %s.", name); + cdap_reply_send(ci, key, -1, NULL, 0); + cdap_destroy(ci); + flow_dealloc(fd); + free(name); + return -1; + } + + LOG_DBG("Packed %s (%lu bytes).", name, len); + + free(name); + + if (cdap_reply_send(ci, key, 0, buf, len)) { + LOG_ERR("Failed to send CDAP reply."); + cdap_destroy(ci); + flow_dealloc(fd); + return -1; + } + + free(buf); + } + + LOG_DBG("Sent boot info to new member."); + + cdap_destroy(ci); + + flow_dealloc(fd); + + return 0; +} + +int enroll_boot(char * dst_name) +{ + struct cdap * ci; + cdap_key_t key; + uint8_t * data; + size_t len; + int fd; + + char * boot_ro = BOOT_PATH; + char * members_ro = MEMBERS_PATH; + char * dif_ro = DIF_PATH; + + fd = flow_alloc(dst_name, ENROLL_AE, NULL); + if (fd < 0) { + LOG_ERR("Failed to allocate flow."); + return -1; + } + + if (flow_alloc_res(fd)) { + LOG_ERR("Flow allocation failed."); + flow_dealloc(fd); + return -1; + } + + ci = cdap_create(fd); + if (ci == NULL) { + LOG_ERR("Failed to create CDAP instance."); + flow_dealloc(fd); + return -1; + } + + LOG_DBG("Getting boot information from %s.", dst_name); + + key = cdap_request_send(ci, CDAP_READ, boot_ro, NULL, 0, 0); + if (key < 0) { + LOG_ERR("Failed to send CDAP request."); + cdap_destroy(ci); + flow_dealloc(fd); + return -1; + } + + if (cdap_reply_wait(ci, key, &data, &len)) { + LOG_ERR("Failed to get CDAP reply."); + cdap_destroy(ci); + flow_dealloc(fd); + return -1; + } + + LOG_DBG("Packed information received (%lu bytes).", len); + + if (rib_unpack(data, len, UNPACK_CREATE)) { + LOG_WARN("Error unpacking RIB data."); + rib_del(boot_ro); + free(data); + cdap_destroy(ci); + flow_dealloc(fd); + return -1; + } + + LOG_DBG("Packed information inserted into RIB."); + + key = cdap_request_send(ci, CDAP_READ, members_ro, NULL, 0, 0); + if (key < 0) { + LOG_ERR("Failed to send CDAP request."); + cdap_destroy(ci); + flow_dealloc(fd); + return -1; + } + + if (cdap_reply_wait(ci, key, &data, &len)) { + LOG_ERR("Failed to get CDAP reply."); + cdap_destroy(ci); + flow_dealloc(fd); + return -1; + } + + LOG_DBG("Packed information received (%lu bytes).", len); + + if (rib_unpack(data, len, UNPACK_CREATE)) { + LOG_WARN("Error unpacking RIB data."); + rib_del(boot_ro); + free(data); + cdap_destroy(ci); + flow_dealloc(fd); + return -1; + } + + LOG_DBG("Packed information inserted into RIB."); + + key = cdap_request_send(ci, CDAP_READ, dif_ro, NULL, 0, 0); + if (key < 0) { + LOG_ERR("Failed to send CDAP request."); + cdap_destroy(ci); + flow_dealloc(fd); + return -1; + } + + if (cdap_reply_wait(ci, key, &data, &len)) { + LOG_ERR("Failed to get CDAP reply."); + cdap_destroy(ci); + flow_dealloc(fd); + return -1; + } + + LOG_DBG("Packed information received (%lu bytes).", len); + + if (rib_unpack(data, len, UNPACK_CREATE)) { + LOG_WARN("Error unpacking RIB data."); + rib_del(boot_ro); + free(data); + cdap_destroy(ci); + flow_dealloc(fd); + return -1; + } + + LOG_DBG("Packed information inserted into RIB."); + + cdap_destroy(ci); + + flow_dealloc(fd); + + return 0; +} |