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#include "sig.h"
#include "env.h"
#include "substdio.h"
#include "stralloc.h"
#include "subfd.h"
#include "getln.h"
#include "alloc.h"
#include "str.h"
#include "hfield.h"
#include "token822.h"
#include "error.h"
#include "gen_alloc.h"
#include "gen_allocdefs.h"
#include "headerbody.h"
#include "exit.h"
#include "open.h"
#include "quote.h"
#include "qmail.h"
void die_noreceipt() { _exit(0); }
void die() { _exit(100); }
void die_temp() { _exit(111); }
void die_nomem() {
substdio_putsflush(subfderr,"qreceipt: fatal: out of memory\n"); die_temp(); }
void die_fork() {
substdio_putsflush(subfderr,"qreceipt: fatal: unable to fork\n"); die_temp(); }
void die_qqperm() {
substdio_putsflush(subfderr,"qreceipt: fatal: permanent qmail-queue error\n"); die(); }
void die_qqtemp() {
substdio_putsflush(subfderr,"qreceipt: fatal: temporary qmail-queue error\n"); die_temp(); }
void die_usage() {
substdio_putsflush(subfderr,
"qreceipt: usage: qreceipt deliveryaddress\n"); die(); }
void die_read() {
if (errno == error_nomem) die_nomem();
substdio_putsflush(subfderr,"qreceipt: fatal: read error\n"); die_temp(); }
void doordie(sa,r) stralloc *sa; int r; {
if (r == 1) return; if (r == -1) die_nomem();
substdio_putsflush(subfderr,"qreceipt: fatal: unable to parse this: ");
substdio_putflush(subfderr,sa->s,sa->len); die(); }
char *target;
int flagreceipt = 0;
char *returnpath;
stralloc messageid = {0};
stralloc sanotice = {0};
int rwnotice(addr) token822_alloc *addr; { token822_reverse(addr);
if (token822_unquote(&sanotice,addr) != 1) die_nomem();
if (sanotice.len == str_len(target))
if (!str_diffn(sanotice.s,target,sanotice.len))
flagreceipt = 1;
token822_reverse(addr); return 1; }
struct qmail qqt;
stralloc quoted = {0};
void finishheader()
{
char *qqx;
if (!flagreceipt) die_noreceipt();
if (str_equal(returnpath,"")) die_noreceipt();
if (str_equal(returnpath,"#@[]")) die_noreceipt();
if (!quote2("ed,returnpath)) die_nomem();
if (qmail_open(&qqt) == -1) die_fork();
qmail_puts(&qqt,"From: DELIVERY NOTICE SYSTEM <");
qmail_put(&qqt,quoted.s,quoted.len);
qmail_puts(&qqt,">\n");
qmail_puts(&qqt,"To: <");
qmail_put(&qqt,quoted.s,quoted.len);
qmail_puts(&qqt,">\n");
qmail_puts(&qqt,"Subject: success notice\n\
\n\
Hi! This is the qreceipt program. Your message was delivered to the\n\
following address: ");
qmail_puts(&qqt,target);
qmail_puts(&qqt,". Thanks for asking.\n");
if (messageid.s)
{
qmail_puts(&qqt,"Your ");
qmail_put(&qqt,messageid.s,messageid.len);
}
qmail_from(&qqt,"");
qmail_to(&qqt,returnpath);
qqx = qmail_close(&qqt);
if (*qqx)
if (*qqx == 'D') die_qqperm();
else die_qqtemp();
}
stralloc hfbuf = {0};
token822_alloc hfin = {0};
token822_alloc hfrewrite = {0};
token822_alloc hfaddr = {0};
void doheaderfield(h)
stralloc *h;
{
switch(hfield_known(h->s,h->len))
{
case H_MESSAGEID:
if (!stralloc_copy(&messageid,h)) die_nomem();
break;
case H_NOTICEREQUESTEDUPONDELIVERYTO:
doordie(h,token822_parse(&hfin,h,&hfbuf));
doordie(h,token822_addrlist(&hfrewrite,&hfaddr,&hfin,rwnotice));
break;
}
}
void dobody(h) stralloc *h; { ; }
void main(argc,argv)
int argc;
char **argv;
{
sig_pipeignore();
if (!(target = argv[1])) die_usage();
if (!(returnpath = env_get("SENDER"))) die_usage();
if (headerbody(subfdin,doheaderfield,finishheader,dobody) == -1) die_read();
die_noreceipt();
}
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