diff options
Diffstat (limited to 'src/responder/pac/pacsrv_utils.c')
| -rw-r--r-- | src/responder/pac/pacsrv_utils.c | 156 |
1 files changed, 156 insertions, 0 deletions
diff --git a/src/responder/pac/pacsrv_utils.c b/src/responder/pac/pacsrv_utils.c index 101960f01..c9551c998 100644 --- a/src/responder/pac/pacsrv_utils.c +++ b/src/responder/pac/pacsrv_utils.c @@ -616,3 +616,159 @@ done: return ret; } + +errno_t diff_gid_lists(TALLOC_CTX *mem_ctx, + size_t cur_grp_num, + struct grp_info *cur_grp_list, + size_t new_gid_num, + gid_t *new_gid_list, + size_t *_add_gid_num, + gid_t **_add_gid_list, + size_t *_del_grp_num, + struct grp_info ***_del_grp_list) +{ + int ret; + size_t c; + hash_table_t *table; + hash_key_t key; + hash_value_t value; + size_t add_gid_num = 0; + gid_t *add_gid_list = NULL; + size_t del_grp_num = 0; + struct grp_info **del_grp_list = NULL; + TALLOC_CTX *tmp_ctx = NULL; + unsigned long value_count; + hash_value_t *values; + + if ((cur_grp_num != 0 && cur_grp_list == NULL) || + (new_gid_num != 0 && new_gid_list == NULL)) { + DEBUG(SSSDBG_OP_FAILURE, ("Missing group array.\n")); + return EINVAL; + } + + if (cur_grp_num == 0 && new_gid_num == 0) { + ret = EOK; + goto done; + } + + tmp_ctx = talloc_new(NULL); + if (tmp_ctx == NULL) { + DEBUG(SSSDBG_OP_FAILURE, ("talloc_new failed.\n")); + ret = ENOMEM; + goto done; + } + + if (cur_grp_num == 0 && new_gid_num != 0) { + add_gid_num = new_gid_num; + add_gid_list = talloc_array(tmp_ctx, gid_t, add_gid_num); + if (add_gid_list == NULL) { + DEBUG(SSSDBG_OP_FAILURE, ("talloc_array failed.\n")); + ret = ENOMEM; + goto done; + } + + for (c = 0; c < add_gid_num; c++) { + add_gid_list[c] = new_gid_list[c]; + } + + ret = EOK; + goto done; + } + + if (cur_grp_num != 0 && new_gid_num == 0) { + del_grp_num = cur_grp_num; + del_grp_list = talloc_array(tmp_ctx, struct grp_info *, del_grp_num); + if (del_grp_list == NULL) { + DEBUG(SSSDBG_OP_FAILURE, ("talloc_array failed.\n")); + ret = ENOMEM; + goto done; + } + + for (c = 0; c < del_grp_num; c++) { + del_grp_list[c] = &cur_grp_list[c]; + } + + ret = EOK; + goto done; + } + + /* Add all current GIDs to a hash and then compare with the new ones in a + * single loop */ + ret = sss_hash_create(tmp_ctx, cur_grp_num, &table); + if (ret != EOK) { + DEBUG(SSSDBG_OP_FAILURE, ("sss_hash_create failed.\n")); + goto done; + } + + key.type = HASH_KEY_ULONG; + value.type = HASH_VALUE_PTR; + for (c = 0; c < cur_grp_num; c++) { + key.ul = (unsigned long) cur_grp_list[c].gid; + value.ptr = &cur_grp_list[c]; + + ret = hash_enter(table, &key, &value); + if (ret != HASH_SUCCESS) { + DEBUG(SSSDBG_OP_FAILURE, ("hash_enter failed.\n")); + ret = EIO; + goto done; + } + } + + for (c = 0; c < new_gid_num; c++) { + key.ul = (unsigned long) new_gid_list[c]; + + ret = hash_delete(table, &key); + if (ret == HASH_ERROR_KEY_NOT_FOUND) { + /* gid not found, must be added */ + add_gid_num++; + add_gid_list = talloc_realloc(tmp_ctx, add_gid_list, gid_t, add_gid_num); + if (add_gid_list == NULL) { + DEBUG(SSSDBG_OP_FAILURE, ("talloc_realloc failed.\n")); + ret = ENOMEM; + goto done; + } + + add_gid_list[add_gid_num - 1] = new_gid_list[c]; + } else if (ret != HASH_SUCCESS) { + DEBUG(SSSDBG_OP_FAILURE, ("hash_delete failed.\n")); + ret = EIO; + goto done; + } + } + + /* the remaining entries in the hash are not in the new list anymore and + * must be deleted */ + ret = hash_values(table, &value_count, &values); + if (ret != HASH_SUCCESS) { + DEBUG(SSSDBG_OP_FAILURE, ("hash_keys failed.\n")); + ret = EIO; + goto done; + } + + del_grp_num = value_count; + del_grp_list = talloc_array(tmp_ctx, struct grp_info *, del_grp_num); + if (del_grp_list == NULL) { + DEBUG(SSSDBG_OP_FAILURE, ("talloc_array failed.\n")); + ret = ENOMEM; + goto done; + } + + for (c = 0; c < del_grp_num; c++) { + del_grp_list[c] = (struct grp_info *) values[c].ptr; + } + + ret = EOK; + +done: + + if (ret == EOK) { + *_add_gid_num = add_gid_num; + *_add_gid_list = talloc_steal(mem_ctx, add_gid_list); + *_del_grp_num = del_grp_num; + *_del_grp_list = talloc_steal(mem_ctx, del_grp_list); + } + + talloc_free(tmp_ctx); + + return ret; +} |