#include <sys/types.h>#include <pwd.h>#include <grp.h>#include "readwrite.h"#include "exit.h"#include "scan.h"#include "fmt.h"#include "strerr.h"#include "open.h"#include "seek.h"#include "fork.h"#define FATAL "idedit: fatal: "#define WARNING "idedit: warning: "int fd;void byte(pos,value)char *pos;unsigned int value;{  unsigned long u;  unsigned char ch;  if (pos[scan_ulong(pos,&u)]) return;  if (seek_set(fd,(seek_pos) u) == -1)    strerr_die2sys(111,FATAL,"unable to seek: ");  ch = value;  if (write(fd,&ch,1) != 1)    strerr_die2sys(111,FATAL,"unable to write: ");}char *args[10];void run(){  int pid;  int wstat;  pid = fork();  if (pid == -1)    strerr_die2sys(111,FATAL,"unable to fork: ");  if (pid == 0) {    execv(*args,args);    strerr_die4sys(111,WARNING,"unable to run ",*args,": ");  }  if (wait_pid(&wstat,pid) != pid)    strerr_die2sys(111,FATAL,"waitpid surprise");}void u(account,group,home,pos0,pos1,pos2,pos3)char *account;char *group;char *home;char *pos0;char *pos1;char *pos2;char *pos3;{  struct passwd *pw;  unsigned int value;  pw = getpwnam(account);  if (!pw && group) {    args[0] = "add-account";    args[1] = account;    args[2] = group;    args[3] = home;    args[4] = 0;    run();    pw = getpwnam(account);  }  if (!pw)    strerr_die3x(111,FATAL,"unable to find uid for ",account);  value = pw->pw_uid;  byte(pos0,value); value >>= 8;  byte(pos1,value); value >>= 8;  byte(pos2,value); value >>= 8;  byte(pos3,value); value >>= 8;  if (value)    strerr_die3x(111,FATAL,"excessively large uid for ",account);}void g(group,pos0,pos1,pos2,pos3)char *group;char *pos0;char *pos1;char *pos2;char *pos3;{  struct group *gr;  unsigned int value;  gr = getgrnam(group);  if (!gr) {    args[0] = "add-group";    args[1] = group;    args[2] = 0;    run();    gr = getgrnam(group);  }  if (!gr)    strerr_die3x(111,FATAL,"unable to find gid for ",group);  value = gr->gr_gid;  byte(pos0,value); value >>= 8;  byte(pos1,value); value >>= 8;  byte(pos2,value); value >>= 8;  byte(pos3,value); value >>= 8;  if (value)    strerr_die3x(111,FATAL,"excessively large gid for ",group);}void main(argc,argv)int argc;char **argv;{  if (argc < 42) _exit(100);  fd = open_write(argv[1]);  if (fd == -1) strerr_die4sys(111,FATAL,"unable to open ",argv[1],": ");  g("qmail",argv[34],argv[35],argv[36],argv[37]);  g("nofiles",argv[38],argv[39],argv[40],argv[41]);  u("root",(char *) 0,"/",argv[14],argv[15],argv[16],argv[17]);  u("qmaild","nofiles","/var/qmail",argv[6],argv[7],argv[8],argv[9]);  u("qmaill","nofiles","/var/qmail",argv[10],argv[11],argv[12],argv[13]);  u("qmailp","nofiles","/var/qmail",argv[18],argv[19],argv[20],argv[21]);  u("alias","nofiles","/var/qmail/alias",argv[2],argv[3],argv[4],argv[5]);  u("qmailq","qmail","/var/qmail",argv[22],argv[23],argv[24],argv[25]);  u("qmailr","qmail","/var/qmail",argv[26],argv[27],argv[28],argv[29]);  u("qmails","qmail","/var/qmail",argv[30],argv[31],argv[32],argv[33]);  _exit(0);}