mdw@git.distorted.org.uk Git - qmail/blob - qreceipt.c

   1 #include "sig.h"
   2 #include "env.h"
   3 #include "substdio.h"
   4 #include "stralloc.h"
   5 #include "subfd.h"
   6 #include "getln.h"
   7 #include "alloc.h"
   8 #include "str.h"
   9 #include "hfield.h"
  10 #include "token822.h"
  11 #include "error.h"
  12 #include "gen_alloc.h"
  13 #include "gen_allocdefs.h"
  14 #include "headerbody.h"
  15 #include "exit.h"
  16 #include "open.h"
  17 #include "quote.h"
  18 #include "qmail.h"
  19
  20 void die_noreceipt() { _exit(0); }
  21 void die() { _exit(100); }
  22 void die_temp() { _exit(111); }
  23 void die_nomem() {
  24  substdio_putsflush(subfderr,"qreceipt: fatal: out of memory\n"); die_temp(); }
  25 void die_fork() {
  26  substdio_putsflush(subfderr,"qreceipt: fatal: unable to fork\n"); die_temp(); }
  27 void die_qqperm() {
  28  substdio_putsflush(subfderr,"qreceipt: fatal: permanent qmail-queue error\n"); die(); }
  29 void die_qqtemp() {
  30  substdio_putsflush(subfderr,"qreceipt: fatal: temporary qmail-queue error\n"); die_temp(); }
  31 void die_usage() {
  32  substdio_putsflush(subfderr,
  33  "qreceipt: usage: qreceipt deliveryaddress\n"); die(); }
  34 void die_read() {
  35  if (errno == error_nomem) die_nomem();
  36  substdio_putsflush(subfderr,"qreceipt: fatal: read error\n"); die_temp(); }
  37 void doordie(sa,r) stralloc *sa; int r; {
  38  if (r == 1) return; if (r == -1) die_nomem();
  39  substdio_putsflush(subfderr,"qreceipt: fatal: unable to parse this: ");
  40  substdio_putflush(subfderr,sa->s,sa->len); die(); }
  41
  42 char *target;
  43
  44 int flagreceipt = 0;
  45
  46 char *returnpath;
  47 stralloc messageid = {0};
  48 stralloc sanotice = {0};
  49
  50 int rwnotice(addr) token822_alloc *addr; { token822_reverse(addr);
  51  if (token822_unquote(&sanotice,addr) != 1) die_nomem();
  52  if (sanotice.len == str_len(target))
  53    if (!str_diffn(sanotice.s,target,sanotice.len))
  54      flagreceipt = 1;
  55  token822_reverse(addr); return 1; }
  56
  57 struct qmail qqt;
  58
  59 stralloc quoted = {0};
  60
  61 void finishheader()
  62 {
  63  char *qqx;
  64
  65  if (!flagreceipt) die_noreceipt();
  66  if (str_equal(returnpath,"")) die_noreceipt();
  67  if (str_equal(returnpath,"#@[]")) die_noreceipt();
  68
  69  if (!quote2(&quoted,returnpath)) die_nomem();
  70
  71  if (qmail_open(&qqt) == -1) die_fork();
  72
  73  qmail_puts(&qqt,"From: DELIVERY NOTICE SYSTEM <");
  74  qmail_put(&qqt,quoted.s,quoted.len);
  75  qmail_puts(&qqt,">\n");
  76  qmail_puts(&qqt,"To: <");
  77  qmail_put(&qqt,quoted.s,quoted.len);
  78  qmail_puts(&qqt,">\n");
  79  qmail_puts(&qqt,"Subject: success notice\n\
  80 \n\
  81 Hi! This is the qreceipt program. Your message was delivered to the\n\
  82 following address: ");
  83  qmail_puts(&qqt,target);
  84  qmail_puts(&qqt,". Thanks for asking.\n");
  85  if (messageid.s)
  86   {
  87    qmail_puts(&qqt,"Your ");
  88    qmail_put(&qqt,messageid.s,messageid.len);
  89   }
  90
  91  qmail_from(&qqt,"");
  92  qmail_to(&qqt,returnpath);
  93  qqx = qmail_close(&qqt);
  94
  95  if (*qqx)
  96    if (*qqx == 'D') die_qqperm();
  97    else die_qqtemp();
  98 }
  99
 100 stralloc hfbuf = {0};
 101 token822_alloc hfin = {0};
 102 token822_alloc hfrewrite = {0};
 103 token822_alloc hfaddr = {0};
 104
 105 void doheaderfield(h)
 106 stralloc *h;
 107 {
 108  switch(hfield_known(h->s,h->len))
 109   {
 110    case H_MESSAGEID:
 111      if (!stralloc_copy(&messageid,h)) die_nomem();
 112      break;
 113    case H_NOTICEREQUESTEDUPONDELIVERYTO:
 114      doordie(h,token822_parse(&hfin,h,&hfbuf));
 115      doordie(h,token822_addrlist(&hfrewrite,&hfaddr,&hfin,rwnotice));
 116      break;
 117   }
 118 }
 119
 120 void dobody(h) stralloc *h; { ; }
 121
 122 void main(argc,argv)
 123 int argc;
 124 char **argv;
 125 {
 126  sig_pipeignore();
 127  if (!(target = argv[1])) die_usage();
 128  if (!(returnpath = env_get("SENDER"))) die_usage();
 129  if (headerbody(subfdin,doheaderfield,finishheader,dobody) == -1) die_read();
 130  die_noreceipt();
 131 }