92 lines
2.6 KiB
C
92 lines
2.6 KiB
C
/*
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* pibs - Passive Identification of BackScatter
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*
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* Copyright (C) 2019 Gerard Wagener
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* Copyright (C) 2019 CIRCL Computer Incident Response Center Luxembourg
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* (SMILE gie).
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "pibs.h"
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//FIXME not generic enough if more segments are needed
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int load_shmid_file(pibs_t* pibs)
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{
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FILE* fp;
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if (pibs->shmid_file[0]) {
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fp = fopen(pibs->shmid_file,"r");
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if (fp) {
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//FIXME check file
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fscanf(fp, "%d", &pibs->shmid);
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return pibs->shmid;
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}
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} else {
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pibs->errno_pibs = ERR_NO_SHMID_FILE;
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}
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return -1;
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}
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int pibs_shmat(pibs_t* pibs)
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{
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/* FIXME init function needs to break up in two functions. One that
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* initializes internal pibs structures as cli options etc
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* a second one for describing the data itself, size of bin_table
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* number of items etc.
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*/
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if (pibs->data) {
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free(pibs->data);
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pibs->data = NULL;
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}
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if (pibs->data) {
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pibs->errno_pibs = ERR_ATTACH_NOT_EMPTY;
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printf("TEST Data is not null\n");
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return -1;
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}
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if (!pibs->shmid_file[0]) {
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pibs->errno_pibs = ERR_NO_SHMID_FILE;
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return -1;
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}
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if (load_shmid_file(pibs) > 0) {
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pibs->data = shmat(pibs->shmid, NULL, SHM_RND);
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if ( (int) pibs->data == -1) {
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pibs->errno_copy = errno;
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} else {
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return 1;
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}
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}
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// Something did not work
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return -1;
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}
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int pibs_shmget(pibs_t* pibs)
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{
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FILE* fp;
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pibs->shmid = shmget(IPC_PRIVATE, pibs->data_size, IPC_CREAT | 0600);
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if (pibs->shmid < 0) {
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pibs->errno_copy = errno;
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}
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if (pibs->shmid_file[0]){
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fp = fopen(pibs->shmid_file, "w");
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if (fp) {
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fprintf(fp,"%d",pibs->shmid);
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fclose(fp);
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}
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//TODO error handling
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}
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//TODO attach to it and bzero it
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//setup the tables
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return pibs->shmid;
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}
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