home *** CD-ROM | disk | FTP | other *** search
- #include "stralloc.h"
- #include "substdio.h"
- #include "subfd.h"
- #include "qmail.h"
- #include "now.h"
- #include "str.h"
- #include "fmt.h"
- #include "env.h"
- #include "sig.h"
- #include "auto_qmail.h"
- #include "now.h"
- #include "datetime.h"
- #include "date822fmt.h"
- #include "readwrite.h"
- #include "control.h"
- #include "constmap.h"
- #include "received.h"
-
- struct qmail qqt;
-
- void dropped() { _exit(0); }
- void badproto() { _exit(100); }
- void resources() { _exit(111); }
- void sigalrm() { _exit(111); }
-
- unsigned long getlen()
- {
- unsigned long len;
- char ch;
-
- len = 0;
- for (;;)
- {
- if (substdio_get(subfdinsmall,&ch,1) < 1) dropped();
- if (ch == ':') return len;
- if (len > 200000000) resources();
- len = 10 * len + (ch - '0');
- }
- }
-
- void getcomma()
- {
- char ch;
-
- if (substdio_get(subfdinsmall,&ch,1) < 1) dropped();
- if (ch != ',') badproto();
- }
-
- struct datetime dt;
- char buf[1000];
- char buf2[100];
-
- char *remotehost;
- char *remoteinfo;
- char *remoteip;
- char *local;
-
- stralloc failure = {0};
-
- int flagrcpthosts;
- stralloc rcpthosts = {0};
- struct constmap maprcpthosts;
- char *relayclient;
- int relayclientlen;
-
- int addrallowed(buf,len) char *buf; int len;
- {
- int j;
- if (!flagrcpthosts) return 1;
- j = byte_rchr(buf,len,'@');
- if (j >= len) return 1;
- if (constmap(&maprcpthosts,buf + j + 1,len - j - 1)) return 1;
- for (;j < len;++j)
- if (buf[j] == '.')
- if (constmap(&maprcpthosts,buf + j,len - j)) return 1;
- return 0;
- }
-
- main()
- {
- char ch;
- int i;
- unsigned long biglen;
- unsigned long len;
- int flagdos;
- int flagsenderok;
- unsigned long qp;
- char *result;
-
- sig_pipeignore();
- sig_alarmcatch(sigalrm);
- alarm(3600);
-
- if (chdir(auto_qmail) == -1) resources();
-
- if (control_init() == -1) resources();
- flagrcpthosts = control_readfile(&rcpthosts,"control/rcpthosts",0);
- if (flagrcpthosts == -1) resources();
- if (flagrcpthosts)
- if (!constmap_init(&maprcpthosts,rcpthosts.s,rcpthosts.len,0)) resources();
- relayclient = env_get("RELAYCLIENT");
- relayclientlen = relayclient ? str_len(relayclient) : 0;
-
- remotehost = env_get("TCPREMOTEHOST");
- if (!remotehost) remotehost = "unknown";
- remoteinfo = env_get("TCPREMOTEINFO");
- remoteip = env_get("TCPREMOTEIP");
- if (!remoteip) remoteip = "unknown";
- local = env_get("TCPLOCALHOST");
- if (!local) local = env_get("TCPLOCALIP");
- if (!local) local = "unknown";
-
- for (;;)
- {
- if (!stralloc_copys(&failure,"")) resources();
- flagsenderok = 1;
-
- len = getlen();
- if (len == 0) badproto();
-
- if (qmail_open(&qqt) == -1) resources();
- qp = qmail_qp(&qqt);
-
- if (substdio_get(subfdinsmall,&ch,1) < 1) dropped();
- --len;
-
- if (ch == 10) flagdos = 0;
- else if (ch == 13) flagdos = 1;
- else badproto();
-
- received(&qqt,"QMTP",local,remoteip,remotehost,remoteinfo,(char *) 0);
-
- /* XXX: check for loops? only if len is big? */
-
- if (flagdos)
- while (len > 0)
- {
- if (substdio_get(subfdinsmall,&ch,1) < 1) dropped();
- --len;
- while ((ch == 13) && len)
- {
- if (substdio_get(subfdinsmall,&ch,1) < 1) dropped();
- --len;
- if (ch == 10) break;
- qmail_put(&qqt,"\015",1);
- }
- qmail_put(&qqt,&ch,1);
- }
- else
- while (len > 0) /* XXX: could speed this up, obviously */
- {
- if (substdio_get(subfdinsmall,&ch,1) < 1) dropped();
- --len;
- qmail_put(&qqt,&ch,1);
- }
- getcomma();
-
- len = getlen();
-
- if (len >= 1000)
- {
- buf[0] = 0;
- flagsenderok = 0;
- for (i = 0;i < len;++i)
- if (substdio_get(subfdinsmall,&ch,1) < 1) dropped();
- }
- else
- {
- for (i = 0;i < len;++i)
- {
- if (substdio_get(subfdinsmall,buf + i,1) < 1) dropped();
- if (!buf[i]) flagsenderok = 0;
- }
- buf[len] = 0;
- }
- getcomma();
-
- qmail_from(&qqt,buf);
- if (!flagsenderok) qmail_fail(&qqt);
-
- biglen = getlen();
- while (biglen > 0)
- {
- if (!stralloc_append(&failure,"")) resources();
-
- len = 0;
- for (;;)
- {
- if (!biglen) badproto();
- if (substdio_get(subfdinsmall,&ch,1) < 1) dropped();
- --biglen;
- if (ch == ':') break;
- if (len > 200000000) resources();
- len = 10 * len + (ch - '0');
- }
- if (len >= biglen) badproto();
- if (len + relayclientlen >= 1000)
- {
- failure.s[failure.len - 1] = 'L';
- for (i = 0;i < len;++i)
- if (substdio_get(subfdinsmall,&ch,1) < 1) dropped();
- }
- else
- {
- for (i = 0;i < len;++i)
- {
- if (substdio_get(subfdinsmall,buf + i,1) < 1) dropped();
- if (!buf[i]) failure.s[failure.len - 1] = 'N';
- }
- buf[len] = 0;
-
- if (relayclient)
- str_copy(buf + len,relayclient);
- else
- if (!addrallowed(buf,len)) failure.s[failure.len - 1] = 'D';
-
- if (!failure.s[failure.len - 1])
- qmail_to(&qqt,buf);
- }
- getcomma();
- biglen -= (len + 1);
- }
- getcomma();
-
- switch(qmail_close(&qqt))
- {
- case 0: result = 0; break;
- case QMAIL_WAITPID: result = "Zqq waitpid surprise (#4.3.0)"; break;
- case QMAIL_CRASHED: result = "Zqq crashed (#4.3.0)"; break;
- case QMAIL_USAGE: result = "Zqq usage surprise (#4.3.0)"; break;
- case QMAIL_SYS: result = "Zqq system error (#4.3.0)"; break;
- case QMAIL_READ: result = "Zqq read error (#4.3.0)"; break;
- case QMAIL_WRITE: result = "Zqq write error or disk full (#4.3.0)"; break;
- case QMAIL_NOMEM: result = "Zqq out of memory (#4.3.0)"; break;
- case QMAIL_EXECSOFT: result = "Zcould not exec qq (#4.3.0)"; break;
- case QMAIL_TIMEOUT: result = "Zqq timeout (#4.3.0)"; break;
- case QMAIL_TOOLONG: result = "Dqq toolong surprise (#5.1.3)"; break;
- default: result = "Zqq internal bug (#4.3.0)"; break;
- }
-
- if (!flagsenderok) result = "Dunacceptable sender (#5.1.7)";
-
- if (result)
- len = str_len(result);
- else
- {
- /* success! */
- len = 0;
- len += fmt_str(buf2 + len,"Kok ");
- len += fmt_ulong(buf2 + len,(unsigned long) now());
- len += fmt_str(buf2 + len," qp ");
- len += fmt_ulong(buf2 + len,qp);
- buf2[len] = 0;
- result = buf2;
- }
-
- len = fmt_ulong(buf,len);
- buf[len++] = ':';
- len += fmt_str(buf + len,result);
- buf[len++] = ',';
-
- for (i = 0;i < failure.len;++i)
- switch(failure.s[i])
- {
- case 0:
- if (substdio_put(subfdoutsmall,buf,len) == -1)
- dropped();
- break;
- case 'D':
- if (substdio_puts(subfdoutsmall,"66:Dsorry, that domain isn't in my list of allowed rcpthosts (#5.7.1),") == -1)
- dropped();
- break;
- default:
- if (substdio_puts(subfdoutsmall,"46:Dsorry, I can't handle that recipient (#5.1.3),") == -1)
- dropped();
- break;
- }
-
- /* subfdoutsmall will be flushed when we read from the network again */
- }
- }
-