49 lines
1.1 KiB
C
49 lines
1.1 KiB
C
#define _GNU_SOURCE
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#include <sys/types.h>
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#include <unistd.h>
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#include <stdio.h>
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#include <grp.h>
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#include <sys/stat.h>
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#include <stdlib.h>
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#include <signal.h>
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int main(int argc, char * argv[]){
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int targetpid;
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int targetgid;
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char* procplace;
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struct stat st;
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if (argc != 2){
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fprintf(stderr, "error - require exactly 1 argument\n");
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return 1;
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}
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if (sscanf(argv[1], "%i", &targetpid) != 1) {
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fprintf(stderr, "error - argv[1] not an integer\n");
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return 2;
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}
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if (group_member(getegid()) == 0) {
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fprintf(stderr, "error - User is not part of the egid group %d\n", getegid());
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return 3;
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}
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// todo check if pid exists
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procplace = (char*) malloc(16*sizeof(char));
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sprintf(procplace, "/proc/%d", targetpid);
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stat(procplace, &st);
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targetgid = st.st_gid;
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free(procplace);
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printf("pid: %d gid: %d\n", targetpid, targetgid);
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procplace = NULL;
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if (targetgid != getegid()){
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fprintf(stderr, "error - target gid is not equal to our egid. %d != %d\n", targetgid, getegid());
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return 4;
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}
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printf("Killing %d\n", targetpid);
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kill(targetpid, SIGTERM);
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}
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