diff options
author | John Denker <jsd@av8n.com> | 2012-07-19 18:55:57 -0700 |
---|---|---|
committer | John Denker <jsd@av8n.com> | 2012-07-29 15:32:34 -0700 |
commit | 8a896e9b2bce51742d264f6a23c4cce544ec5af7 (patch) | |
tree | 17dfb8c8802fb567d0b5afa9dbcf9f96b83f1543 /tools | |
parent | 84688a05a4430daf8dedf80bce35286aff4f4b1c (diff) |
might even be working : greylist
Diffstat (limited to 'tools')
-rw-r--r-- | tools/greylist.c | 75 |
1 files changed, 66 insertions, 9 deletions
diff --git a/tools/greylist.c b/tools/greylist.c index 8adac05..d769ff4 100644 --- a/tools/greylist.c +++ b/tools/greylist.c @@ -9,6 +9,8 @@ #include <errno.h> /* for ENOENT */ #include <fstream> /* for ofstream() */ #include <fcntl.h> /* for creat() */ +#include <sys/time.h> /* for gettimeofday() */ + using namespace std; const int sa_good = 0; @@ -21,7 +23,7 @@ string progname; void dump(const string var){ char* str = getenv(var.c_str()); - cerr << progname + cerr << progname << "[" << mypid << "] " << var; if (str) cerr << " is set to '" << str << "'" << endl; @@ -34,12 +36,53 @@ const string dirname("/var/qmail/greylist"); // int fstat(int fd, struct stat *buf); // int lstat(const char *path, struct stat *buf); +const int minute(60); +const int hour(60*minute); +const int day(24*hour); + +class whatsit{ +public: + string progname; + pid_t mypid; + timeval now; + string ipname; + int mod_age; + int ac_age; + + whatsit(const string name) + : progname(name), mypid(getpid()) + { + gettimeofday(&now, NULL); + } + int doit(); +// access comes after modification: + void update(const string msg, const timeval new_mod, const timeval new_ac); +}; + +void whatsit::update(const string msg, const timeval new_mod, const timeval new_ac){ + cerr << progname << ": " + << msg << ": " << ipname + << " mod_age: " << mod_age + << " ac_age: " << ac_age + << endl; + timeval upd[2] = { +// beware: access illogically comes *before* modification here: + new_ac, + new_mod + }; + utimes(ipname.c_str(), upd); +} + int main(int argc, char** argv){ - mypid = getpid(); - progname = argv[0]; + // dump("TCPREMOTEIP"); // dump("TCPREMOTEHOST"); + whatsit foo(argv[0]); + return foo.doit(); +} + +int whatsit::doit(){ char* ipvar = getenv("TCPREMOTEIP"); if (!ipvar) { cerr << progname << ": TCPREMOTEIP not set???" << endl; @@ -66,8 +109,8 @@ int main(int argc, char** argv){ exit(sa_syserr); } } - - string ipname = dirname + "/" + ipbase; + + ipname = dirname + "/" + ipbase; struct stat ipstat; rslt = stat(ipname.c_str(), &ipstat); if (rslt != 0){ @@ -84,9 +127,23 @@ int main(int argc, char** argv){ perror(0); } close(fd); + update("new customer", now, now); return(bug_bait_grey); - } else { - cerr << "file exists: " << ipname << endl; } - return 0; -} +// here if stat succeeded + mod_age = now.tv_sec - ipstat.st_mtime; + ac_age = now.tv_sec - ipstat.st_atime; + timeval mod_orig = {ipstat.st_mtime, 0}; + if (mod_age < 5*minute) { + update("early bird", mod_orig, now); + return(bug_bait_grey); + } + if (ac_age < 32*day) { + update("returning customer", mod_orig, now); + return 0; + } + +// here if it is too old: + update("too old, starting over", now, now); + return(bug_bait_grey); +}
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