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#include <stdlib.h> /* for exit(), getenv() */
#include <iostream>
#include <string>
#include <sys/types.h> /* for stat() */
#include <sys/stat.h> /* for stat() */
#include <unistd.h> /* for stat() */
#include <stdio.h> /* for perror */
#include <errno.h> /* for ENOENT */
#include <fstream> /* for ofstream() */
#include <fcntl.h> /* for creat() */
using namespace std;
const int sa_good = 0;
const int bug_bait_grey = 1;
// qmail_queue and spamc have similar interpretations here:
const int sa_syserr = 71;
pid_t mypid;
string progname;
void dump(const string var){
char* str = getenv(var.c_str());
cerr << progname
<< "[" << mypid << "] "
<< var;
if (str) cerr << " is set to '" << str << "'" << endl;
else cerr << " is not set." << endl;
}
const string dirname("/var/qmail/greylist");
// int stat(const char *path, struct stat *buf);
// int fstat(int fd, struct stat *buf);
// int lstat(const char *path, struct stat *buf);
int main(int argc, char** argv){
mypid = getpid();
progname = argv[0];
// dump("TCPREMOTEIP");
// dump("TCPREMOTEHOST");
char* ipvar = getenv("TCPREMOTEIP");
if (!ipvar) {
cerr << progname << ": TCPREMOTEIP not set???" << endl;
exit(sa_syserr);
}
string ipbase = ipvar;
// see if our directory exists:
struct stat dirstat;
int rslt = stat(dirname.c_str(), &dirstat);
if (rslt != 0){
if (errno != ENOENT) {
cerr << progname << ": stat failed for '"
<< dirname << "' : ";
perror(0);
}
rslt = mkdir(dirname.c_str(), 0755);
if (rslt != 0) {
cerr << progname
<< "uid " << getuid()
<< ": mkdir failed for '"
<< dirname << "' : ";
perror(0);
exit(sa_syserr);
}
}
string ipname = dirname + "/" + ipbase;
struct stat ipstat;
rslt = stat(ipname.c_str(), &ipstat);
if (rslt != 0){
if (errno != ENOENT) {
cerr << progname << ": stat failed for '"
<< ipname << "' : ";
perror(0);
}
ofstream foo;
int fd = creat(ipname.c_str(), 0644);
if (fd < 0){
cerr << progname << ": create failed for '"
<< ipname << "' : ";
perror(0);
}
close(fd);
return(bug_bait_grey);
} else {
cerr << "file exists: " << ipname << endl;
}
return 0;
}
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