Bandie/grub2-se-verifyserv
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This commit is contained in:
Bandie 2018-03-17 21:18:22 +01:00
parent c856c49a92
commit a79509c974
Signed by: Bandie
GPG Key ID: C1E133BC65A822DD
1 changed files with 43 additions and 47 deletions
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84
src/grub2-se-verifyserv.c
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@ -37,19 +37,19 @@ void help(){
}
void sig_handler(int signo){
if(signo == SIGTERM || signo == SIGINT){
// Unverify
if(access(VRFFILE, F_OK) != -1){ //File exists?
unlink(VRFFILE);
if(signo == SIGTERM || signo == SIGINT){
// Unverify
if(access(VRFFILE, F_OK) != -1){ //File exists?
unlink(VRFFILE);
}
exit(0);
}
exit(0);
}
}
int main(int argc, char *argv[]){
const char prog;
int verbose = 0;
int statval;
int verbose = 0;
int statval;
// Argument handling
@ -62,14 +62,13 @@ int main(int argc, char *argv[]){
verbose = 1;
}
// Signal handling
if(signal(SIGTERM, sig_handler) == SIG_ERR || signal(SIGINT, sig_handler) == SIG_ERR)
printf("ERROR: Can't catch signal!");
// Signal handling
if(signal(SIGTERM, sig_handler) == SIG_ERR || signal(SIGINT, sig_handler) == SIG_ERR)
printf("ERROR: Can't catch signal!");
while(1){
if(fork() == 0){
while(1){
if(fork() == 0){
// Check if program is even executable
if(!(!access(PROGRAM, F_OK) && !access(PROGRAM, R_OK) && !access(PROGRAM, X_OK))){
@ -77,57 +76,54 @@ int main(int argc, char *argv[]){
if(access(PROGRAM, F_OK)) fprintf(stderr, "It does not exist.\n");
else fprintf(stderr, "Access denied. (Are you root?)\n");
return 1;
}
else{
// Exec program silently by default
// Exec program silently by default
if(!verbose){
int fd = open("/dev/null", O_WRONLY | O_CREAT, 0666);
int fd = open("/dev/null", O_WRONLY | O_CREAT, 0666);
dup2(fd, 1);
dup2(fd, 2);
dup2(fd, 1);
dup2(fd, 2);
execlp(PROGRAM, PROGRAM, NULL);
close(fd);
close(fd);
}
else
execlp(PROGRAM, PROGRAM, NULL);
}
}
else {
}
else {
if(verbose)
printf("Waiting for %d...\n", getpid());
if(verbose)
printf("Waiting for %d...\n", getpid());
wait(&statval);
if(WIFEXITED(statval)){
if(verbose)
printf("Exit: %d\n", statval);
wait(&statval);
if(WIFEXITED(statval)){
if(verbose)
printf("Exit: %d\n", statval);
if(statval == STATUS_OK){
// If exit 0, write file with nothing in it
FILE *f = fopen(VRFFILE, "w");
if(f == NULL){
printf("ERROR opening file");
exit(1);
}
fclose(f);
}
else if(statval == 256){
if(statval == STATUS_OK){
// If exit is STATUS_OK, write file with nothing in it
FILE *f = fopen(VRFFILE, "w");
if(f == NULL){
printf("ERROR opening file");
return 1;
}
fclose(f);
}
else if(statval == 256){
return 1;
}
else
// If exit != 0
if(access(VRFFILE, F_OK) != -1) //File exists?
unlink(VRFFILE);
}
}
}
}
sleep(SLEEP);
}
sleep(SLEEP);
}
sig_handler(SIGTERM);