14227346bSdist /* 20942ea6aSbostic * Copyright (c) 1983 Eric P. Allman 3e70a7521Sbostic * Copyright (c) 1988 Regents of the University of California. 4e70a7521Sbostic * All rights reserved. 5e70a7521Sbostic * 63bc94712Sbostic * %sccs.include.redist.c% 74227346bSdist */ 84227346bSdist 94227346bSdist #ifndef lint 10*75f1ade9Seric static char sccsid[] = "@(#)deliver.c 6.12 (Berkeley) 01/26/93"; 11e70a7521Sbostic #endif /* not lint */ 124227346bSdist 13fcde9cc8Sbostic #include "sendmail.h" 14911693bfSbostic #include <sys/signal.h> 15c77d1c25Seric #include <sys/stat.h> 16f28da541Smiriam #include <netdb.h> 17fccb3f7aSbostic #include <fcntl.h> 18911693bfSbostic #include <errno.h> 19134746fbSeric #ifdef NAMED_BIND 20912a731aSbostic #include <arpa/nameser.h> 21912a731aSbostic #include <resolv.h> 22134746fbSeric #endif 2325a99e2eSeric 2425a99e2eSeric /* 2513bbc08cSeric ** DELIVER -- Deliver a message to a list of addresses. 2613bbc08cSeric ** 2713bbc08cSeric ** This routine delivers to everyone on the same host as the 2813bbc08cSeric ** user on the head of the list. It is clever about mailers 2913bbc08cSeric ** that don't handle multiple users. It is NOT guaranteed 3013bbc08cSeric ** that it will deliver to all these addresses however -- so 3113bbc08cSeric ** deliver should be called once for each address on the 3213bbc08cSeric ** list. 3325a99e2eSeric ** 3425a99e2eSeric ** Parameters: 35588cad61Seric ** e -- the envelope to deliver. 36c77d1c25Seric ** firstto -- head of the address list to deliver to. 3725a99e2eSeric ** 3825a99e2eSeric ** Returns: 3925a99e2eSeric ** zero -- successfully delivered. 4025a99e2eSeric ** else -- some failure, see ExitStat for more info. 4125a99e2eSeric ** 4225a99e2eSeric ** Side Effects: 4325a99e2eSeric ** The standard input is passed off to someone. 4425a99e2eSeric */ 4525a99e2eSeric 46588cad61Seric deliver(e, firstto) 47588cad61Seric register ENVELOPE *e; 48c77d1c25Seric ADDRESS *firstto; 4925a99e2eSeric { 5078442df3Seric char *host; /* host being sent to */ 5178442df3Seric char *user; /* user being sent to */ 5225a99e2eSeric char **pvp; 535dfc646bSeric register char **mvp; 5425a99e2eSeric register char *p; 55588cad61Seric register MAILER *m; /* mailer for this recipient */ 566259796dSeric ADDRESS *ctladdr; 57b31e7f2bSeric register MCI *mci; 58c77d1c25Seric register ADDRESS *to = firstto; 59c579ef51Seric bool clever = FALSE; /* running user smtp to this mailer */ 60772e6e50Seric ADDRESS *tochain = NULL; /* chain of users in this mailer call */ 61911693bfSbostic int rcode; /* response code */ 62c23ed322Seric char *from; /* pointer to from person */ 63e103b48fSeric char *firstsig; /* signature of firstto */ 64ee6bf8dfSeric char *pv[MAXPV+1]; 65ee6bf8dfSeric char tobuf[MAXLINE-50]; /* text line of to people */ 66ee6bf8dfSeric char buf[MAXNAME]; 67ee6bf8dfSeric char tfrombuf[MAXNAME]; /* translated from person */ 68c23ed322Seric char rpathbuf[MAXNAME]; /* translated return path */ 69fabb3bd4Seric extern int checkcompat(); 70ee6bf8dfSeric extern ADDRESS *getctladdr(); 71ee6bf8dfSeric extern char *remotename(); 72b31e7f2bSeric extern MCI *openmailer(); 73e103b48fSeric extern char *hostsignature(); 7425a99e2eSeric 7535490626Seric errno = 0; 76da2935e1Seric if (bitset(QDONTSEND, to->q_flags)) 775dfc646bSeric return (0); 7825a99e2eSeric 79134746fbSeric #ifdef NAMED_BIND 80912a731aSbostic /* unless interactive, try twice, over a minute */ 81912a731aSbostic if (OpMode == MD_DAEMON || OpMode == MD_SMTP) { 82912a731aSbostic _res.retrans = 30; 83912a731aSbostic _res.retry = 2; 84912a731aSbostic } 85d4bd8f0eSbostic #endif 86912a731aSbostic 8751552439Seric m = to->q_mailer; 8851552439Seric host = to->q_host; 8951552439Seric 906ef48975Seric if (tTd(10, 1)) 915dfc646bSeric printf("\n--deliver, mailer=%d, host=`%s', first user=`%s'\n", 9251552439Seric m->m_mno, host, to->q_user); 93f3dbc832Seric 94f3dbc832Seric /* 95f3dbc832Seric ** If this mailer is expensive, and if we don't want to make 96f3dbc832Seric ** connections now, just mark these addresses and return. 97f3dbc832Seric ** This is useful if we want to batch connections to 98f3dbc832Seric ** reduce load. This will cause the messages to be 99f3dbc832Seric ** queued up, and a daemon will come along to send the 100f3dbc832Seric ** messages later. 101f3dbc832Seric ** This should be on a per-mailer basis. 102f3dbc832Seric */ 103f3dbc832Seric 10457fc6f17Seric if (NoConnect && !QueueRun && bitnset(M_EXPENSIVE, m->m_flags) && 105317680d6Seric !Verbose) 106f3dbc832Seric { 107f3dbc832Seric for (; to != NULL; to = to->q_next) 108f4560e80Seric { 109f4560e80Seric if (bitset(QDONTSEND, to->q_flags) || to->q_mailer != m) 110f4560e80Seric continue; 111f3dbc832Seric to->q_flags |= QQUEUEUP|QDONTSEND; 112588cad61Seric e->e_to = to->q_paddr; 113eb238f8cSeric message(Arpa_Info, "queued"); 114eb238f8cSeric if (LogLevel > 4) 115b31e7f2bSeric logdelivery("queued", e); 116f4560e80Seric } 117588cad61Seric e->e_to = NULL; 118f3dbc832Seric return (0); 119f3dbc832Seric } 120f3dbc832Seric 12125a99e2eSeric /* 1225dfc646bSeric ** Do initial argv setup. 1235dfc646bSeric ** Insert the mailer name. Notice that $x expansion is 1245dfc646bSeric ** NOT done on the mailer name. Then, if the mailer has 1255dfc646bSeric ** a picky -f flag, we insert it as appropriate. This 1265dfc646bSeric ** code does not check for 'pv' overflow; this places a 1275dfc646bSeric ** manifest lower limit of 4 for MAXPV. 1283bea8136Seric ** The from address rewrite is expected to make 1293bea8136Seric ** the address relative to the other end. 1305dfc646bSeric */ 1315dfc646bSeric 13278442df3Seric /* rewrite from address, using rewriting rules */ 133b843d759Seric (void) strcpy(rpathbuf, remotename(e->e_returnpath, m, TRUE, TRUE, e)); 134c23ed322Seric if (e->e_returnpath == e->e_sender) 135c23ed322Seric { 136c23ed322Seric from = rpathbuf; 137c23ed322Seric } 138c23ed322Seric else 139c23ed322Seric { 140b843d759Seric (void) strcpy(tfrombuf, remotename(e->e_sender, m, TRUE, TRUE, e)); 141c23ed322Seric from = tfrombuf; 142c23ed322Seric } 14378442df3Seric 144c23ed322Seric define('f', e->e_returnpath, e); /* raw return path */ 145c23ed322Seric define('<', rpathbuf, e); /* translated return path */ 146c23ed322Seric define('g', from, e); /* translated sender */ 147588cad61Seric define('h', host, e); /* to host */ 1485dfc646bSeric Errors = 0; 1495dfc646bSeric pvp = pv; 1505dfc646bSeric *pvp++ = m->m_argv[0]; 1515dfc646bSeric 1525dfc646bSeric /* insert -f or -r flag as appropriate */ 15357fc6f17Seric if (FromFlag && (bitnset(M_FOPT, m->m_flags) || bitnset(M_ROPT, m->m_flags))) 1545dfc646bSeric { 15557fc6f17Seric if (bitnset(M_FOPT, m->m_flags)) 1565dfc646bSeric *pvp++ = "-f"; 1575dfc646bSeric else 1585dfc646bSeric *pvp++ = "-r"; 159c23ed322Seric *pvp++ = newstr(rpathbuf); 1605dfc646bSeric } 1615dfc646bSeric 1625dfc646bSeric /* 1635dfc646bSeric ** Append the other fixed parts of the argv. These run 1645dfc646bSeric ** up to the first entry containing "$u". There can only 1655dfc646bSeric ** be one of these, and there are only a few more slots 1665dfc646bSeric ** in the pv after it. 1675dfc646bSeric */ 1685dfc646bSeric 1695dfc646bSeric for (mvp = m->m_argv; (p = *++mvp) != NULL; ) 1705dfc646bSeric { 1716c2c3107Seric while ((p = strchr(p, '\001')) != NULL) 1725dfc646bSeric if (*++p == 'u') 1735dfc646bSeric break; 1745dfc646bSeric if (p != NULL) 1755dfc646bSeric break; 1765dfc646bSeric 1775dfc646bSeric /* this entry is safe -- go ahead and process it */ 178588cad61Seric expand(*mvp, buf, &buf[sizeof buf - 1], e); 1795dfc646bSeric *pvp++ = newstr(buf); 1805dfc646bSeric if (pvp >= &pv[MAXPV - 3]) 1815dfc646bSeric { 1825dfc646bSeric syserr("Too many parameters to %s before $u", pv[0]); 1835dfc646bSeric return (-1); 1845dfc646bSeric } 1855dfc646bSeric } 186c579ef51Seric 18733db8731Seric /* 18833db8731Seric ** If we have no substitution for the user name in the argument 18933db8731Seric ** list, we know that we must supply the names otherwise -- and 19033db8731Seric ** SMTP is the answer!! 19133db8731Seric */ 19233db8731Seric 1935dfc646bSeric if (*mvp == NULL) 194c579ef51Seric { 195c579ef51Seric /* running SMTP */ 1962c7e1b8dSeric # ifdef SMTP 197c579ef51Seric clever = TRUE; 198c579ef51Seric *pvp = NULL; 1996c2c3107Seric # else /* SMTP */ 20033db8731Seric /* oops! we don't implement SMTP */ 2012c7e1b8dSeric syserr("SMTP style mailer"); 2022c7e1b8dSeric return (EX_SOFTWARE); 2036c2c3107Seric # endif /* SMTP */ 204c579ef51Seric } 2055dfc646bSeric 2065dfc646bSeric /* 2075dfc646bSeric ** At this point *mvp points to the argument with $u. We 2085dfc646bSeric ** run through our address list and append all the addresses 2095dfc646bSeric ** we can. If we run out of space, do not fret! We can 2105dfc646bSeric ** always send another copy later. 2115dfc646bSeric */ 2125dfc646bSeric 2135dfc646bSeric tobuf[0] = '\0'; 214588cad61Seric e->e_to = tobuf; 2156259796dSeric ctladdr = NULL; 216e103b48fSeric firstsig = hostsignature(firstto->q_mailer, firstto->q_host, e); 2175dfc646bSeric for (; to != NULL; to = to->q_next) 2185dfc646bSeric { 2195dfc646bSeric /* avoid sending multiple recipients to dumb mailers */ 22057fc6f17Seric if (tobuf[0] != '\0' && !bitnset(M_MUSER, m->m_flags)) 2215dfc646bSeric break; 2225dfc646bSeric 2235dfc646bSeric /* if already sent or not for this host, don't send */ 224da2935e1Seric if (bitset(QDONTSEND, to->q_flags) || 225e103b48fSeric to->q_mailer != firstto->q_mailer || 226e103b48fSeric strcmp(hostsignature(to->q_mailer, to->q_host, e), firstsig) != 0) 2275dfc646bSeric continue; 2286259796dSeric 2294b22ea87Seric /* avoid overflowing tobuf */ 230aa50a568Sbostic if (sizeof tobuf < (strlen(to->q_paddr) + strlen(tobuf) + 2)) 2314b22ea87Seric break; 2324b22ea87Seric 2336ef48975Seric if (tTd(10, 1)) 234772e6e50Seric { 235772e6e50Seric printf("\nsend to "); 236772e6e50Seric printaddr(to, FALSE); 237772e6e50Seric } 238772e6e50Seric 2396259796dSeric /* compute effective uid/gid when sending */ 2407da1035fSeric if (to->q_mailer == ProgMailer) 2416259796dSeric ctladdr = getctladdr(to); 2426259796dSeric 2435dfc646bSeric user = to->q_user; 244588cad61Seric e->e_to = to->q_paddr; 2455dfc646bSeric to->q_flags |= QDONTSEND; 246*75f1ade9Seric if (tTd(10, 5)) 247*75f1ade9Seric { 248*75f1ade9Seric printf("deliver: QDONTSEND "); 249*75f1ade9Seric printaddr(to, FALSE); 250*75f1ade9Seric } 2515dfc646bSeric 2525dfc646bSeric /* 2535dfc646bSeric ** Check to see that these people are allowed to 2545dfc646bSeric ** talk to each other. 2552a6e0786Seric */ 2562a6e0786Seric 25769582d2fSeric if (m->m_maxsize != 0 && e->e_msgsize > m->m_maxsize) 25869582d2fSeric { 25969582d2fSeric NoReturn = TRUE; 260672bec4aSeric usrerr("Message is too large; %ld bytes max", m->m_maxsize); 26169582d2fSeric giveresponse(EX_UNAVAILABLE, m, e); 26269582d2fSeric continue; 26369582d2fSeric } 264fabb3bd4Seric rcode = checkcompat(to, e); 2651793c9c5Seric if (rcode != EX_OK) 2665dfc646bSeric { 2671793c9c5Seric giveresponse(rcode, m, e); 2685dfc646bSeric continue; 2695dfc646bSeric } 2702a6e0786Seric 2712a6e0786Seric /* 2729ec9501bSeric ** Strip quote bits from names if the mailer is dumb 2739ec9501bSeric ** about them. 27425a99e2eSeric */ 27525a99e2eSeric 27657fc6f17Seric if (bitnset(M_STRIPQ, m->m_flags)) 27725a99e2eSeric { 2781d8f1806Seric stripquotes(user); 2791d8f1806Seric stripquotes(host); 28025a99e2eSeric } 28125a99e2eSeric 282cdb828c5Seric /* hack attack -- delivermail compatibility */ 283cdb828c5Seric if (m == ProgMailer && *user == '|') 284cdb828c5Seric user++; 285cdb828c5Seric 28625a99e2eSeric /* 2873efaed6eSeric ** If an error message has already been given, don't 2883efaed6eSeric ** bother to send to this address. 2893efaed6eSeric ** 2903efaed6eSeric ** >>>>>>>>>> This clause assumes that the local mailer 2913efaed6eSeric ** >> NOTE >> cannot do any further aliasing; that 2923efaed6eSeric ** >>>>>>>>>> function is subsumed by sendmail. 2933efaed6eSeric */ 2943efaed6eSeric 2956cae517dSeric if (bitset(QBADADDR|QQUEUEUP, to->q_flags)) 2963efaed6eSeric continue; 2973efaed6eSeric 298f2fec898Seric /* save statistics.... */ 299588cad61Seric markstats(e, to); 300f2fec898Seric 3013efaed6eSeric /* 30225a99e2eSeric ** See if this user name is "special". 30325a99e2eSeric ** If the user name has a slash in it, assume that this 30451552439Seric ** is a file -- send it off without further ado. Note 30551552439Seric ** that this type of addresses is not processed along 30651552439Seric ** with the others, so we fudge on the To person. 30725a99e2eSeric */ 30825a99e2eSeric 3092c017f8dSeric if (m == FileMailer) 31025a99e2eSeric { 311b31e7f2bSeric rcode = mailfile(user, getctladdr(to), e); 312198d9be0Seric giveresponse(rcode, m, e); 313dde5acadSeric if (rcode == EX_OK) 314dde5acadSeric to->q_flags |= QSENT; 3155dfc646bSeric continue; 31625a99e2eSeric } 31725a99e2eSeric 31813bbc08cSeric /* 31913bbc08cSeric ** Address is verified -- add this user to mailer 32013bbc08cSeric ** argv, and add it to the print list of recipients. 32113bbc08cSeric */ 32213bbc08cSeric 323508daeccSeric /* link together the chain of recipients */ 324508daeccSeric to->q_tchain = tochain; 325508daeccSeric tochain = to; 326508daeccSeric 3275dfc646bSeric /* create list of users for error messages */ 328db8841e9Seric (void) strcat(tobuf, ","); 329db8841e9Seric (void) strcat(tobuf, to->q_paddr); 330588cad61Seric define('u', user, e); /* to user */ 331588cad61Seric define('z', to->q_home, e); /* user's home */ 3325dfc646bSeric 333c579ef51Seric /* 334508daeccSeric ** Expand out this user into argument list. 335c579ef51Seric */ 336c579ef51Seric 337508daeccSeric if (!clever) 338c579ef51Seric { 339588cad61Seric expand(*mvp, buf, &buf[sizeof buf - 1], e); 3405dfc646bSeric *pvp++ = newstr(buf); 3415dfc646bSeric if (pvp >= &pv[MAXPV - 2]) 3425dfc646bSeric { 3435dfc646bSeric /* allow some space for trailing parms */ 3445dfc646bSeric break; 3455dfc646bSeric } 3465dfc646bSeric } 347c579ef51Seric } 3485dfc646bSeric 349145b49b1Seric /* see if any addresses still exist */ 350145b49b1Seric if (tobuf[0] == '\0') 351c579ef51Seric { 352588cad61Seric define('g', (char *) NULL, e); 353c23ed322Seric define('<', (char *) NULL, e); 354145b49b1Seric return (0); 355c579ef51Seric } 356145b49b1Seric 3575dfc646bSeric /* print out messages as full list */ 35863780dbdSeric e->e_to = tobuf + 1; 3595dfc646bSeric 3605dfc646bSeric /* 3615dfc646bSeric ** Fill out any parameters after the $u parameter. 3625dfc646bSeric */ 3635dfc646bSeric 364c579ef51Seric while (!clever && *++mvp != NULL) 3655dfc646bSeric { 366588cad61Seric expand(*mvp, buf, &buf[sizeof buf - 1], e); 3675dfc646bSeric *pvp++ = newstr(buf); 3685dfc646bSeric if (pvp >= &pv[MAXPV]) 3695dfc646bSeric syserr("deliver: pv overflow after $u for %s", pv[0]); 3705dfc646bSeric } 3715dfc646bSeric *pvp++ = NULL; 3725dfc646bSeric 37325a99e2eSeric /* 37425a99e2eSeric ** Call the mailer. 3756328bdf7Seric ** The argument vector gets built, pipes 37625a99e2eSeric ** are created as necessary, and we fork & exec as 3776328bdf7Seric ** appropriate. 378c579ef51Seric ** If we are running SMTP, we just need to clean up. 37925a99e2eSeric */ 38025a99e2eSeric 38186b26461Seric if (ctladdr == NULL) 38286b26461Seric ctladdr = &e->e_from; 383134746fbSeric #ifdef NAMED_BIND 3842bcc6d2dSeric if (ConfigLevel < 2) 385912a731aSbostic _res.options &= ~(RES_DEFNAMES | RES_DNSRCH); /* XXX */ 386134746fbSeric #endif 387b31e7f2bSeric mci = openmailer(m, pv, ctladdr, clever, e); 388b31e7f2bSeric if (mci == NULL) 389134746fbSeric { 390b31e7f2bSeric /* catastrophic error */ 391b31e7f2bSeric rcode = -1; 392b31e7f2bSeric goto give_up; 393b31e7f2bSeric } 394b31e7f2bSeric else if (mci->mci_state != MCIS_OPEN) 395b31e7f2bSeric { 396b31e7f2bSeric /* couldn't open the mailer */ 397b31e7f2bSeric rcode = mci->mci_exitstat; 3982a6bc25bSeric errno = mci->mci_errno; 399b31e7f2bSeric if (rcode == EX_OK) 400b31e7f2bSeric { 401b31e7f2bSeric /* shouldn't happen */ 4026b0f339dSeric syserr("deliver: rcode=%d, mci_state=%d, sig=%s", 4036b0f339dSeric rcode, mci->mci_state, firstsig); 404b31e7f2bSeric rcode = EX_SOFTWARE; 405b31e7f2bSeric } 406b31e7f2bSeric } 407b31e7f2bSeric else if (!clever) 408b31e7f2bSeric { 409b31e7f2bSeric /* 410b31e7f2bSeric ** Format and send message. 411b31e7f2bSeric */ 41215d084d5Seric 413b31e7f2bSeric putfromline(mci->mci_out, m, e); 414b31e7f2bSeric (*e->e_puthdr)(mci->mci_out, m, e); 415b31e7f2bSeric putline("\n", mci->mci_out, m); 416b31e7f2bSeric (*e->e_putbody)(mci->mci_out, m, e); 417b31e7f2bSeric 418b31e7f2bSeric /* get the exit status */ 419b31e7f2bSeric rcode = endmailer(mci, pv[0]); 420134746fbSeric } 421134746fbSeric else 422b31e7f2bSeric #ifdef SMTP 423134746fbSeric { 424b31e7f2bSeric /* 425b31e7f2bSeric ** Send the MAIL FROM: protocol 426b31e7f2bSeric */ 42715d084d5Seric 428b31e7f2bSeric rcode = smtpmailfrom(m, mci, e); 429b31e7f2bSeric if (rcode == EX_OK) 43075889e88Seric { 431ded0d3daSkarels register char *t = tobuf; 432ded0d3daSkarels register int i; 433ded0d3daSkarels 434588cad61Seric /* send the recipient list */ 43563780dbdSeric tobuf[0] = '\0'; 43675889e88Seric for (to = tochain; to != NULL; to = to->q_tchain) 43775889e88Seric { 43863780dbdSeric e->e_to = to->q_paddr; 43915d084d5Seric if ((i = smtprcpt(to, m, mci, e)) != EX_OK) 44075889e88Seric { 44183b7ddc9Seric markfailure(e, to, i); 442198d9be0Seric giveresponse(i, m, e); 44363780dbdSeric } 44475889e88Seric else 44575889e88Seric { 446911693bfSbostic *t++ = ','; 447b31e7f2bSeric for (p = to->q_paddr; *p; *t++ = *p++) 448b31e7f2bSeric continue; 449588cad61Seric } 450588cad61Seric } 451588cad61Seric 45263780dbdSeric /* now send the data */ 45363780dbdSeric if (tobuf[0] == '\0') 454b31e7f2bSeric { 45563780dbdSeric e->e_to = NULL; 456b31e7f2bSeric if (bitset(MCIF_CACHED, mci->mci_flags)) 457b31e7f2bSeric smtprset(m, mci, e); 458b31e7f2bSeric } 45975889e88Seric else 46075889e88Seric { 46163780dbdSeric e->e_to = tobuf + 1; 46275889e88Seric rcode = smtpdata(m, mci, e); 46363780dbdSeric } 46463780dbdSeric 46563780dbdSeric /* now close the connection */ 466b31e7f2bSeric if (!bitset(MCIF_CACHED, mci->mci_flags)) 46715d084d5Seric smtpquit(m, mci, e); 46863780dbdSeric } 469c579ef51Seric } 470b31e7f2bSeric #else /* not SMTP */ 471a05b3449Sbostic { 472b31e7f2bSeric syserr("deliver: need SMTP compiled to use clever mailer"); 473b31e7f2bSeric rcode = -1; 474b31e7f2bSeric goto give_up; 475a05b3449Sbostic } 476b31e7f2bSeric #endif /* SMTP */ 477134746fbSeric #ifdef NAMED_BIND 4782bcc6d2dSeric if (ConfigLevel < 2) 479912a731aSbostic _res.options |= RES_DEFNAMES | RES_DNSRCH; /* XXX */ 480134746fbSeric #endif 4815dfc646bSeric 482b31e7f2bSeric /* arrange a return receipt if requested */ 483b31e7f2bSeric if (e->e_receiptto != NULL && bitnset(M_LOCAL, m->m_flags)) 484b31e7f2bSeric { 485b31e7f2bSeric e->e_flags |= EF_SENDRECEIPT; 486b31e7f2bSeric /* do we want to send back more info? */ 487b31e7f2bSeric } 488b31e7f2bSeric 489c77d1c25Seric /* 49063780dbdSeric ** Do final status disposal. 49163780dbdSeric ** We check for something in tobuf for the SMTP case. 492c77d1c25Seric ** If we got a temporary failure, arrange to queue the 493c77d1c25Seric ** addressees. 494c77d1c25Seric */ 495c77d1c25Seric 496b31e7f2bSeric give_up: 49763780dbdSeric if (tobuf[0] != '\0') 498198d9be0Seric giveresponse(rcode, m, e); 499772e6e50Seric for (to = tochain; to != NULL; to = to->q_tchain) 500b31e7f2bSeric { 501dde5acadSeric if (rcode != EX_OK) 50283b7ddc9Seric markfailure(e, to, rcode); 503dde5acadSeric else 504655518ecSeric { 505dde5acadSeric to->q_flags |= QSENT; 506655518ecSeric e->e_nsent++; 507655518ecSeric } 508b31e7f2bSeric } 509b31e7f2bSeric 510b31e7f2bSeric /* 511b31e7f2bSeric ** Restore state and return. 512b31e7f2bSeric */ 513c77d1c25Seric 51435490626Seric errno = 0; 515588cad61Seric define('g', (char *) NULL, e); 516c23ed322Seric define('<', (char *) NULL, e); 5175826d9d3Seric return (rcode); 51825a99e2eSeric } 5195dfc646bSeric /* 52083b7ddc9Seric ** MARKFAILURE -- mark a failure on a specific address. 52183b7ddc9Seric ** 52283b7ddc9Seric ** Parameters: 52383b7ddc9Seric ** e -- the envelope we are sending. 52483b7ddc9Seric ** q -- the address to mark. 52583b7ddc9Seric ** rcode -- the code signifying the particular failure. 52683b7ddc9Seric ** 52783b7ddc9Seric ** Returns: 52883b7ddc9Seric ** none. 52983b7ddc9Seric ** 53083b7ddc9Seric ** Side Effects: 53183b7ddc9Seric ** marks the address (and possibly the envelope) with the 53283b7ddc9Seric ** failure so that an error will be returned or 53383b7ddc9Seric ** the message will be queued, as appropriate. 53483b7ddc9Seric */ 53583b7ddc9Seric 53683b7ddc9Seric markfailure(e, q, rcode) 53783b7ddc9Seric register ENVELOPE *e; 53883b7ddc9Seric register ADDRESS *q; 53983b7ddc9Seric int rcode; 54083b7ddc9Seric { 54183b7ddc9Seric if (rcode == EX_OK) 54283b7ddc9Seric return; 543ef137175Sbostic else if (rcode != EX_TEMPFAIL && rcode != EX_IOERR && rcode != EX_OSERR) 54483b7ddc9Seric q->q_flags |= QBADADDR; 54583b7ddc9Seric else if (curtime() > e->e_ctime + TimeOut) 54683b7ddc9Seric { 54783b7ddc9Seric extern char *pintvl(); 548198d9be0Seric char buf[MAXLINE]; 54983b7ddc9Seric 55083b7ddc9Seric if (!bitset(EF_TIMEOUT, e->e_flags)) 551198d9be0Seric { 552198d9be0Seric (void) sprintf(buf, "Cannot send message for %s", 55383b7ddc9Seric pintvl(TimeOut, FALSE)); 554198d9be0Seric if (e->e_message != NULL) 555198d9be0Seric free(e->e_message); 556198d9be0Seric e->e_message = newstr(buf); 557198d9be0Seric message(Arpa_Info, buf); 558198d9be0Seric } 55983b7ddc9Seric q->q_flags |= QBADADDR; 56083b7ddc9Seric e->e_flags |= EF_TIMEOUT; 561c13b5dfcSeric fprintf(e->e_xfp, "421 %s... Message timed out\n", q->q_paddr); 56283b7ddc9Seric } 56383b7ddc9Seric else 56483b7ddc9Seric q->q_flags |= QQUEUEUP; 56583b7ddc9Seric } 56683b7ddc9Seric /* 56732d19d43Seric ** DOFORK -- do a fork, retrying a couple of times on failure. 56832d19d43Seric ** 56932d19d43Seric ** This MUST be a macro, since after a vfork we are running 57032d19d43Seric ** two processes on the same stack!!! 57132d19d43Seric ** 57232d19d43Seric ** Parameters: 57332d19d43Seric ** none. 57432d19d43Seric ** 57532d19d43Seric ** Returns: 57632d19d43Seric ** From a macro??? You've got to be kidding! 57732d19d43Seric ** 57832d19d43Seric ** Side Effects: 57932d19d43Seric ** Modifies the ==> LOCAL <== variable 'pid', leaving: 58032d19d43Seric ** pid of child in parent, zero in child. 58132d19d43Seric ** -1 on unrecoverable error. 58232d19d43Seric ** 58332d19d43Seric ** Notes: 58432d19d43Seric ** I'm awfully sorry this looks so awful. That's 58532d19d43Seric ** vfork for you..... 58632d19d43Seric */ 58732d19d43Seric 58832d19d43Seric # define NFORKTRIES 5 58984f7cd1bSeric 59084f7cd1bSeric # ifndef FORK 59184f7cd1bSeric # define FORK fork 59284f7cd1bSeric # endif 59332d19d43Seric 59432d19d43Seric # define DOFORK(fORKfN) \ 59532d19d43Seric {\ 59632d19d43Seric register int i;\ 59732d19d43Seric \ 59811799049Seric for (i = NFORKTRIES; --i >= 0; )\ 59932d19d43Seric {\ 60032d19d43Seric pid = fORKfN();\ 60132d19d43Seric if (pid >= 0)\ 60232d19d43Seric break;\ 60311799049Seric if (i > 0)\ 6046c4635f6Seric sleep((unsigned) NFORKTRIES - i);\ 60532d19d43Seric }\ 60632d19d43Seric } 60732d19d43Seric /* 6082ed72599Seric ** DOFORK -- simple fork interface to DOFORK. 6092ed72599Seric ** 6102ed72599Seric ** Parameters: 6112ed72599Seric ** none. 6122ed72599Seric ** 6132ed72599Seric ** Returns: 6142ed72599Seric ** pid of child in parent. 6152ed72599Seric ** zero in child. 6162ed72599Seric ** -1 on error. 6172ed72599Seric ** 6182ed72599Seric ** Side Effects: 6192ed72599Seric ** returns twice, once in parent and once in child. 6202ed72599Seric */ 6212ed72599Seric 6222ed72599Seric dofork() 6232ed72599Seric { 6242ed72599Seric register int pid; 6252ed72599Seric 6262ed72599Seric DOFORK(fork); 6272ed72599Seric return (pid); 6282ed72599Seric } 6292ed72599Seric /* 630c579ef51Seric ** ENDMAILER -- Wait for mailer to terminate. 631c579ef51Seric ** 632c579ef51Seric ** We should never get fatal errors (e.g., segmentation 633c579ef51Seric ** violation), so we report those specially. For other 634c579ef51Seric ** errors, we choose a status message (into statmsg), 635c579ef51Seric ** and if it represents an error, we print it. 636c579ef51Seric ** 637c579ef51Seric ** Parameters: 638c579ef51Seric ** pid -- pid of mailer. 639c579ef51Seric ** name -- name of mailer (for error messages). 640c579ef51Seric ** 641c579ef51Seric ** Returns: 642c579ef51Seric ** exit code of mailer. 643c579ef51Seric ** 644c579ef51Seric ** Side Effects: 645c579ef51Seric ** none. 646c579ef51Seric */ 647c579ef51Seric 64875889e88Seric endmailer(mci, name) 649b31e7f2bSeric register MCI *mci; 650c579ef51Seric char *name; 651c579ef51Seric { 652588cad61Seric int st; 653c579ef51Seric 65475889e88Seric /* close any connections */ 65575889e88Seric if (mci->mci_in != NULL) 65675889e88Seric (void) fclose(mci->mci_in); 65775889e88Seric if (mci->mci_out != NULL) 65875889e88Seric (void) fclose(mci->mci_out); 65975889e88Seric mci->mci_in = mci->mci_out = NULL; 66075889e88Seric mci->mci_state = MCIS_CLOSED; 66175889e88Seric 66233db8731Seric /* in the IPC case there is nothing to wait for */ 66375889e88Seric if (mci->mci_pid == 0) 66433db8731Seric return (EX_OK); 66533db8731Seric 66633db8731Seric /* wait for the mailer process to die and collect status */ 66775889e88Seric st = waitfor(mci->mci_pid); 668588cad61Seric if (st == -1) 66978de67c1Seric { 670588cad61Seric syserr("endmailer %s: wait", name); 671588cad61Seric return (EX_SOFTWARE); 672c579ef51Seric } 67333db8731Seric 67433db8731Seric /* see if it died a horrid death */ 675c579ef51Seric if ((st & 0377) != 0) 676c579ef51Seric { 6775f73204aSeric syserr("mailer %s died with signal %o", name, st); 6785f73204aSeric ExitStat = EX_TEMPFAIL; 6795f73204aSeric return (EX_TEMPFAIL); 680c579ef51Seric } 68133db8731Seric 68233db8731Seric /* normal death -- return status */ 683588cad61Seric st = (st >> 8) & 0377; 684588cad61Seric return (st); 685c579ef51Seric } 686c579ef51Seric /* 687c579ef51Seric ** OPENMAILER -- open connection to mailer. 688c579ef51Seric ** 689c579ef51Seric ** Parameters: 690c579ef51Seric ** m -- mailer descriptor. 691c579ef51Seric ** pvp -- parameter vector to pass to mailer. 692c579ef51Seric ** ctladdr -- controlling address for user. 693c579ef51Seric ** clever -- create a full duplex connection. 694c579ef51Seric ** 695c579ef51Seric ** Returns: 69675889e88Seric ** The mail connection info struct for this connection. 69775889e88Seric ** NULL on failure. 698c579ef51Seric ** 699c579ef51Seric ** Side Effects: 700c579ef51Seric ** creates a mailer in a subprocess. 701c579ef51Seric */ 702c579ef51Seric 703b31e7f2bSeric MCI * 704b31e7f2bSeric openmailer(m, pvp, ctladdr, clever, e) 705588cad61Seric MAILER *m; 706c579ef51Seric char **pvp; 707c579ef51Seric ADDRESS *ctladdr; 708c579ef51Seric bool clever; 709b31e7f2bSeric ENVELOPE *e; 710c579ef51Seric { 7115dfc646bSeric int pid; 712b31e7f2bSeric register MCI *mci; 713f8952a83Seric int mpvect[2]; 714c579ef51Seric int rpvect[2]; 7155dfc646bSeric extern FILE *fdopen(); 7165dfc646bSeric 7176ef48975Seric if (tTd(11, 1)) 7185dfc646bSeric { 7198c57e552Seric printf("openmailer:"); 7205dfc646bSeric printav(pvp); 7215dfc646bSeric } 72235490626Seric errno = 0; 7235dfc646bSeric 724ef66a9d0Seric CurHostName = m->m_mailer; 725ef66a9d0Seric 72633db8731Seric /* 72733db8731Seric ** Deal with the special case of mail handled through an IPC 72833db8731Seric ** connection. 72933db8731Seric ** In this case we don't actually fork. We must be 73033db8731Seric ** running SMTP for this to work. We will return a 73133db8731Seric ** zero pid to indicate that we are running IPC. 732e7c1bd78Seric ** We also handle a debug version that just talks to stdin/out. 73333db8731Seric */ 73433db8731Seric 735e7c1bd78Seric /* check for Local Person Communication -- not for mortals!!! */ 736e7c1bd78Seric if (strcmp(m->m_mailer, "[LPC]") == 0) 737e7c1bd78Seric { 738b31e7f2bSeric mci = (MCI *) xalloc(sizeof *mci); 7392a087e90Seric bzero((char *) mci, sizeof *mci); 74075889e88Seric mci->mci_in = stdin; 74175889e88Seric mci->mci_out = stdout; 742b31e7f2bSeric mci->mci_state = clever ? MCIS_OPENING : MCIS_OPEN; 74315d084d5Seric mci->mci_mailer = m; 744e7c1bd78Seric } 745b31e7f2bSeric else if (strcmp(m->m_mailer, "[IPC]") == 0 || 746914346b1Seric strcmp(m->m_mailer, "[TCP]") == 0) 74733db8731Seric { 74884f7cd1bSeric #ifdef DAEMON 749e103b48fSeric register int i; 7501277f9a8Seric register u_short port; 751e103b48fSeric char *curhost; 752b31e7f2bSeric extern MCI *mci_get(); 753e103b48fSeric extern char *hostsignature(); 75433db8731Seric 755ef66a9d0Seric CurHostName = pvp[1]; 756e103b48fSeric curhost = hostsignature(m, pvp[1], e); 757b31e7f2bSeric 75833db8731Seric if (!clever) 75933db8731Seric syserr("non-clever IPC"); 76093b6e3cfSeric if (pvp[2] != NULL) 7611277f9a8Seric port = atoi(pvp[2]); 76293b6e3cfSeric else 7631277f9a8Seric port = 0; 764e103b48fSeric while (*curhost != '\0') 765ebc61751Sbloom { 766e103b48fSeric register char *p; 767e103b48fSeric char hostbuf[MAXNAME]; 768e103b48fSeric 769e103b48fSeric /* pull the next host from the signature */ 770e103b48fSeric p = strchr(curhost, ':'); 771e103b48fSeric if (p == NULL) 772e103b48fSeric p = &curhost[strlen(curhost)]; 773e103b48fSeric strncpy(hostbuf, curhost, p - curhost); 774e103b48fSeric hostbuf[p - curhost] = '\0'; 775e103b48fSeric if (*p != '\0') 776e103b48fSeric p++; 777e103b48fSeric curhost = p; 778e103b48fSeric 77945a8316eSeric /* see if we already know that this host is fried */ 780e103b48fSeric CurHostName = hostbuf; 781e103b48fSeric mci = mci_get(hostbuf, m); 782b31e7f2bSeric if (mci->mci_state != MCIS_CLOSED) 7831fa7c2ebSeric { 7841fa7c2ebSeric if (tTd(11, 1)) 7851fa7c2ebSeric { 7861fa7c2ebSeric printf("openmailer: "); 7871fa7c2ebSeric mci_dump(mci); 7881fa7c2ebSeric } 78975889e88Seric return mci; 7901fa7c2ebSeric } 79115d084d5Seric mci->mci_mailer = m; 792b31e7f2bSeric if (mci->mci_exitstat != EX_OK) 793b31e7f2bSeric continue; 794b31e7f2bSeric 79575889e88Seric /* try the connection */ 796e103b48fSeric setproctitle("%s %s: %s", e->e_id, hostbuf, "user open"); 797914346b1Seric message(Arpa_Info, "Connecting to %s (%s)...", 798e103b48fSeric hostbuf, m->m_name); 799e103b48fSeric i = makeconnection(hostbuf, port, mci, 800914346b1Seric bitnset(M_SECURE_PORT, m->m_flags)); 80175889e88Seric mci->mci_exitstat = i; 80275889e88Seric mci->mci_errno = errno; 80375889e88Seric if (i == EX_OK) 804b31e7f2bSeric { 805b31e7f2bSeric mci->mci_state = MCIS_OPENING; 806b31e7f2bSeric mci_cache(mci); 807b31e7f2bSeric break; 808b31e7f2bSeric } 809b31e7f2bSeric else if (tTd(11, 1)) 810b31e7f2bSeric printf("openmailer: makeconnection => stat=%d, errno=%d\n", 811b31e7f2bSeric i, errno); 812b31e7f2bSeric 81375889e88Seric 8145f73204aSeric /* enter status of this host */ 81575889e88Seric setstat(i); 816ed854c7bSeric } 8172a087e90Seric mci->mci_pid = 0; 818b31e7f2bSeric #else /* no DAEMON */ 819588cad61Seric syserr("openmailer: no IPC"); 8201fa7c2ebSeric if (tTd(11, 1)) 8211fa7c2ebSeric printf("openmailer: NULL\n"); 82275889e88Seric return NULL; 823b31e7f2bSeric #endif /* DAEMON */ 824588cad61Seric } 825b31e7f2bSeric else 826b31e7f2bSeric { 8276328bdf7Seric /* create a pipe to shove the mail through */ 828f8952a83Seric if (pipe(mpvect) < 0) 82925a99e2eSeric { 830588cad61Seric syserr("openmailer: pipe (to mailer)"); 8311fa7c2ebSeric if (tTd(11, 1)) 8321fa7c2ebSeric printf("openmailer: NULL\n"); 83375889e88Seric return NULL; 83425a99e2eSeric } 835c579ef51Seric 836c579ef51Seric /* if this mailer speaks smtp, create a return pipe */ 837c579ef51Seric if (clever && pipe(rpvect) < 0) 838c579ef51Seric { 839588cad61Seric syserr("openmailer: pipe (from mailer)"); 840c579ef51Seric (void) close(mpvect[0]); 841c579ef51Seric (void) close(mpvect[1]); 8421fa7c2ebSeric if (tTd(11, 1)) 8431fa7c2ebSeric printf("openmailer: NULL\n"); 84475889e88Seric return NULL; 845c579ef51Seric } 846c579ef51Seric 84733db8731Seric /* 84833db8731Seric ** Actually fork the mailer process. 84933db8731Seric ** DOFORK is clever about retrying. 8506984bfddSeric ** 8516984bfddSeric ** Dispose of SIGCHLD signal catchers that may be laying 8526984bfddSeric ** around so that endmail will get it. 85333db8731Seric */ 85433db8731Seric 855b31e7f2bSeric if (e->e_xfp != NULL) 856b31e7f2bSeric (void) fflush(e->e_xfp); /* for debugging */ 857588cad61Seric (void) fflush(stdout); 8586984bfddSeric # ifdef SIGCHLD 8596984bfddSeric (void) signal(SIGCHLD, SIG_DFL); 8606c2c3107Seric # endif /* SIGCHLD */ 86184f7cd1bSeric DOFORK(FORK); 862f129ec7dSeric /* pid is set by DOFORK */ 86325a99e2eSeric if (pid < 0) 86425a99e2eSeric { 86533db8731Seric /* failure */ 866588cad61Seric syserr("openmailer: cannot fork"); 867f8952a83Seric (void) close(mpvect[0]); 868f8952a83Seric (void) close(mpvect[1]); 869c579ef51Seric if (clever) 870c579ef51Seric { 871c579ef51Seric (void) close(rpvect[0]); 872c579ef51Seric (void) close(rpvect[1]); 873c579ef51Seric } 8741fa7c2ebSeric if (tTd(11, 1)) 8751fa7c2ebSeric printf("openmailer: NULL\n"); 87675889e88Seric return NULL; 87725a99e2eSeric } 87825a99e2eSeric else if (pid == 0) 87925a99e2eSeric { 88013088b9fSeric int i; 881dafbc479Seric int saveerrno; 882d7a0480eSeric char *env[2]; 8835f73204aSeric extern int DtableSize; 88413088b9fSeric 88525a99e2eSeric /* child -- set up input & exec mailer */ 88603ab8e55Seric /* make diagnostic output be standard output */ 8878f0e7860Seric (void) signal(SIGINT, SIG_IGN); 8888f0e7860Seric (void) signal(SIGHUP, SIG_IGN); 8890984da9fSeric (void) signal(SIGTERM, SIG_DFL); 890f8952a83Seric 891b31e7f2bSeric /* arrange to filter std & diag output of command */ 892c579ef51Seric if (clever) 893c579ef51Seric { 894c579ef51Seric (void) close(rpvect[0]); 895c579ef51Seric (void) close(1); 896c579ef51Seric (void) dup(rpvect[1]); 897c579ef51Seric (void) close(rpvect[1]); 898c579ef51Seric } 899276723a8Seric else if (OpMode == MD_SMTP || HoldErrs) 900f8952a83Seric { 901588cad61Seric /* put mailer output in transcript */ 902f8952a83Seric (void) close(1); 903b31e7f2bSeric (void) dup(fileno(e->e_xfp)); 904f8952a83Seric } 905db8841e9Seric (void) close(2); 906db8841e9Seric (void) dup(1); 907f8952a83Seric 908f8952a83Seric /* arrange to get standard input */ 909f8952a83Seric (void) close(mpvect[1]); 910db8841e9Seric (void) close(0); 911f8952a83Seric if (dup(mpvect[0]) < 0) 91225a99e2eSeric { 91325a99e2eSeric syserr("Cannot dup to zero!"); 914a590b978Seric _exit(EX_OSERR); 91525a99e2eSeric } 916f8952a83Seric (void) close(mpvect[0]); 91757fc6f17Seric if (!bitnset(M_RESTR, m->m_flags)) 9180984da9fSeric { 91953e3fa05Seric if (ctladdr == NULL || ctladdr->q_uid == 0) 920e36b99e2Seric { 921e36b99e2Seric (void) setgid(DefGid); 922898a126bSbostic (void) initgroups(DefUser, DefGid); 923e36b99e2Seric (void) setuid(DefUid); 924e36b99e2Seric } 925e36b99e2Seric else 92669f29479Seric { 927e36b99e2Seric (void) setgid(ctladdr->q_gid); 928898a126bSbostic (void) initgroups(ctladdr->q_ruser? 929898a126bSbostic ctladdr->q_ruser: ctladdr->q_user, 930898a126bSbostic ctladdr->q_gid); 931e36b99e2Seric (void) setuid(ctladdr->q_uid); 93269f29479Seric } 9330984da9fSeric } 934588cad61Seric 93513088b9fSeric /* arrange for all the files to be closed */ 936b31e7f2bSeric for (i = 3; i < DtableSize; i++) 937b31e7f2bSeric { 938fccb3f7aSbostic register int j; 939fccb3f7aSbostic if ((j = fcntl(i, F_GETFD, 0)) != -1) 940fccb3f7aSbostic (void)fcntl(i, F_SETFD, j|1); 941fccb3f7aSbostic } 94233db8731Seric 94333db8731Seric /* try to execute the mailer */ 944d7a0480eSeric env[0] = "AGENT=sendmail"; 945d7a0480eSeric env[1] = NULL; 946d7a0480eSeric execve(m->m_mailer, pvp, env); 947dafbc479Seric saveerrno = errno; 94813088b9fSeric syserr("Cannot exec %s", m->m_mailer); 94995b76e4bSeric if (m == LocalMailer) 95055f33c03Seric _exit(EX_TEMPFAIL); 951dafbc479Seric switch (saveerrno) 95295b76e4bSeric { 95395b76e4bSeric case EIO: 95495b76e4bSeric case EAGAIN: 95595b76e4bSeric case ENOMEM: 95695b76e4bSeric # ifdef EPROCLIM 95795b76e4bSeric case EPROCLIM: 95895b76e4bSeric # endif 95995b76e4bSeric _exit(EX_TEMPFAIL); 96095b76e4bSeric } 961a590b978Seric _exit(EX_UNAVAILABLE); 96225a99e2eSeric } 96325a99e2eSeric 964f8952a83Seric /* 965c579ef51Seric ** Set up return value. 966f8952a83Seric */ 967f8952a83Seric 968b31e7f2bSeric mci = (MCI *) xalloc(sizeof *mci); 9692a087e90Seric bzero((char *) mci, sizeof *mci); 97015d084d5Seric mci->mci_mailer = m; 971b31e7f2bSeric mci->mci_state = clever ? MCIS_OPENING : MCIS_OPEN; 9722a087e90Seric mci->mci_pid = pid; 973f8952a83Seric (void) close(mpvect[0]); 97475889e88Seric mci->mci_out = fdopen(mpvect[1], "w"); 975c579ef51Seric if (clever) 97625a99e2eSeric { 977c579ef51Seric (void) close(rpvect[1]); 97875889e88Seric mci->mci_in = fdopen(rpvect[0], "r"); 97975889e88Seric } 98075889e88Seric else 98175889e88Seric { 98275889e88Seric mci->mci_flags |= MCIF_TEMP; 98375889e88Seric mci->mci_in = NULL; 98475889e88Seric } 985b31e7f2bSeric } 986b31e7f2bSeric 987b31e7f2bSeric /* 988b31e7f2bSeric ** If we are in SMTP opening state, send initial protocol. 989b31e7f2bSeric */ 990b31e7f2bSeric 991b31e7f2bSeric if (clever && mci->mci_state != MCIS_CLOSED) 992b31e7f2bSeric { 993b31e7f2bSeric smtpinit(m, mci, e); 994b31e7f2bSeric } 9951fa7c2ebSeric if (tTd(11, 1)) 9961fa7c2ebSeric { 9971fa7c2ebSeric printf("openmailer: "); 9981fa7c2ebSeric mci_dump(mci); 9991fa7c2ebSeric } 1000c579ef51Seric 100175889e88Seric return mci; 100225a99e2eSeric } 100325a99e2eSeric /* 100425a99e2eSeric ** GIVERESPONSE -- Interpret an error response from a mailer 100525a99e2eSeric ** 100625a99e2eSeric ** Parameters: 100725a99e2eSeric ** stat -- the status code from the mailer (high byte 100825a99e2eSeric ** only; core dumps must have been taken care of 100925a99e2eSeric ** already). 101025a99e2eSeric ** m -- the mailer descriptor for this mailer. 101125a99e2eSeric ** 101225a99e2eSeric ** Returns: 1013db8841e9Seric ** none. 101425a99e2eSeric ** 101525a99e2eSeric ** Side Effects: 1016c1f9df2cSeric ** Errors may be incremented. 101725a99e2eSeric ** ExitStat may be set. 101825a99e2eSeric */ 101925a99e2eSeric 1020198d9be0Seric giveresponse(stat, m, e) 102125a99e2eSeric int stat; 1022588cad61Seric register MAILER *m; 1023198d9be0Seric ENVELOPE *e; 102425a99e2eSeric { 102525a99e2eSeric register char *statmsg; 102625a99e2eSeric extern char *SysExMsg[]; 102725a99e2eSeric register int i; 1028d4bd8f0eSbostic extern int N_SysEx; 1029d4bd8f0eSbostic #ifdef NAMED_BIND 1030d4bd8f0eSbostic extern int h_errno; 1031d4bd8f0eSbostic #endif 1032198d9be0Seric char buf[MAXLINE]; 103325a99e2eSeric 10347d1fc79dSeric #ifdef lint 10357d1fc79dSeric if (m == NULL) 10367d1fc79dSeric return; 10377d1fc79dSeric #endif lint 10387d1fc79dSeric 103913bbc08cSeric /* 104013bbc08cSeric ** Compute status message from code. 104113bbc08cSeric */ 104213bbc08cSeric 104325a99e2eSeric i = stat - EX__BASE; 1044588cad61Seric if (stat == 0) 1045588cad61Seric statmsg = "250 Sent"; 1046588cad61Seric else if (i < 0 || i > N_SysEx) 1047588cad61Seric { 1048588cad61Seric (void) sprintf(buf, "554 unknown mailer error %d", stat); 1049588cad61Seric stat = EX_UNAVAILABLE; 1050588cad61Seric statmsg = buf; 1051588cad61Seric } 1052198d9be0Seric else if (stat == EX_TEMPFAIL) 1053198d9be0Seric { 10548557d168Seric (void) strcpy(buf, SysExMsg[i]); 1055d4bd8f0eSbostic #ifdef NAMED_BIND 1056f28da541Smiriam if (h_errno == TRY_AGAIN) 1057f28da541Smiriam { 1058f28da541Smiriam extern char *errstring(); 1059f28da541Smiriam 1060f28da541Smiriam statmsg = errstring(h_errno+MAX_ERRNO); 1061f28da541Smiriam } 1062f28da541Smiriam else 1063d4bd8f0eSbostic #endif 1064f28da541Smiriam { 10658557d168Seric if (errno != 0) 1066198d9be0Seric { 106787c9b3e7Seric extern char *errstring(); 10688557d168Seric 1069d87e85f3Seric statmsg = errstring(errno); 1070d87e85f3Seric } 1071d87e85f3Seric else 1072d87e85f3Seric { 1073d87e85f3Seric #ifdef SMTP 1074d87e85f3Seric extern char SmtpError[]; 1075d87e85f3Seric 1076d87e85f3Seric statmsg = SmtpError; 10776c2c3107Seric #else /* SMTP */ 1078d87e85f3Seric statmsg = NULL; 10796c2c3107Seric #endif /* SMTP */ 1080d87e85f3Seric } 1081f28da541Smiriam } 1082d87e85f3Seric if (statmsg != NULL && statmsg[0] != '\0') 1083d87e85f3Seric { 108487c9b3e7Seric (void) strcat(buf, ": "); 1085d87e85f3Seric (void) strcat(buf, statmsg); 10868557d168Seric } 1087198d9be0Seric statmsg = buf; 1088198d9be0Seric } 108925a99e2eSeric else 1090d87e85f3Seric { 109125a99e2eSeric statmsg = SysExMsg[i]; 1092d87e85f3Seric } 1093588cad61Seric 1094588cad61Seric /* 1095588cad61Seric ** Print the message as appropriate 1096588cad61Seric */ 1097588cad61Seric 1098198d9be0Seric if (stat == EX_OK || stat == EX_TEMPFAIL) 10995826d9d3Seric message(Arpa_Info, &statmsg[4]); 110025a99e2eSeric else 110125a99e2eSeric { 1102c1f9df2cSeric Errors++; 11035826d9d3Seric usrerr(statmsg); 110425a99e2eSeric } 110525a99e2eSeric 110625a99e2eSeric /* 110725a99e2eSeric ** Final cleanup. 110825a99e2eSeric ** Log a record of the transaction. Compute the new 110925a99e2eSeric ** ExitStat -- if we already had an error, stick with 111025a99e2eSeric ** that. 111125a99e2eSeric */ 111225a99e2eSeric 111361f5a1d4Seric if (LogLevel > ((stat == 0 || stat == EX_TEMPFAIL) ? 3 : 2)) 1114b31e7f2bSeric logdelivery(&statmsg[4], e); 1115eb238f8cSeric 1116eb238f8cSeric if (stat != EX_TEMPFAIL) 1117eb238f8cSeric setstat(stat); 1118198d9be0Seric if (stat != EX_OK) 1119198d9be0Seric { 1120198d9be0Seric if (e->e_message != NULL) 1121198d9be0Seric free(e->e_message); 1122198d9be0Seric e->e_message = newstr(&statmsg[4]); 1123198d9be0Seric } 11248557d168Seric errno = 0; 1125d4bd8f0eSbostic #ifdef NAMED_BIND 1126f28da541Smiriam h_errno = 0; 1127d4bd8f0eSbostic #endif 1128eb238f8cSeric } 1129eb238f8cSeric /* 1130eb238f8cSeric ** LOGDELIVERY -- log the delivery in the system log 1131eb238f8cSeric ** 1132eb238f8cSeric ** Parameters: 1133eb238f8cSeric ** stat -- the message to print for the status 1134eb238f8cSeric ** 1135eb238f8cSeric ** Returns: 1136eb238f8cSeric ** none 1137eb238f8cSeric ** 1138eb238f8cSeric ** Side Effects: 1139eb238f8cSeric ** none 1140eb238f8cSeric */ 1141eb238f8cSeric 1142b31e7f2bSeric logdelivery(stat, e) 1143eb238f8cSeric char *stat; 1144b31e7f2bSeric register ENVELOPE *e; 11455cf56be3Seric { 11465cf56be3Seric extern char *pintvl(); 11475cf56be3Seric 1148eb238f8cSeric # ifdef LOG 1149b31e7f2bSeric syslog(LOG_INFO, "%s: to=%s, delay=%s, stat=%s", e->e_id, 1150b31e7f2bSeric e->e_to, pintvl(curtime() - e->e_ctime, TRUE), stat); 11516c2c3107Seric # endif /* LOG */ 115225a99e2eSeric } 115325a99e2eSeric /* 115451552439Seric ** PUTFROMLINE -- output a UNIX-style from line (or whatever) 115525a99e2eSeric ** 115651552439Seric ** This can be made an arbitrary message separator by changing $l 115751552439Seric ** 11589b6c17a6Seric ** One of the ugliest hacks seen by human eyes is contained herein: 11599b6c17a6Seric ** UUCP wants those stupid "remote from <host>" lines. Why oh why 11609b6c17a6Seric ** does a well-meaning programmer such as myself have to deal with 11619b6c17a6Seric ** this kind of antique garbage???? 116225a99e2eSeric ** 116325a99e2eSeric ** Parameters: 116451552439Seric ** fp -- the file to output to. 116551552439Seric ** m -- the mailer describing this entry. 116625a99e2eSeric ** 116725a99e2eSeric ** Returns: 116851552439Seric ** none 116925a99e2eSeric ** 117025a99e2eSeric ** Side Effects: 117151552439Seric ** outputs some text to fp. 117225a99e2eSeric */ 117325a99e2eSeric 1174b31e7f2bSeric putfromline(fp, m, e) 117551552439Seric register FILE *fp; 117651552439Seric register MAILER *m; 1177b31e7f2bSeric ENVELOPE *e; 117825a99e2eSeric { 11799b6c17a6Seric char *template = "\001l\n"; 118051552439Seric char buf[MAXLINE]; 118125a99e2eSeric 118257fc6f17Seric if (bitnset(M_NHDR, m->m_flags)) 118351552439Seric return; 118413bbc08cSeric 11852c7e1b8dSeric # ifdef UGLYUUCP 118657fc6f17Seric if (bitnset(M_UGLYUUCP, m->m_flags)) 118774b6e67bSeric { 1188ea09d6edSeric char *bang; 1189ea09d6edSeric char xbuf[MAXLINE]; 119074b6e67bSeric 1191b31e7f2bSeric expand("\001<", buf, &buf[sizeof buf - 1], e); 11926c2c3107Seric bang = strchr(buf, '!'); 119374b6e67bSeric if (bang == NULL) 1194ea09d6edSeric syserr("No ! in UUCP! (%s)", buf); 119574b6e67bSeric else 1196588cad61Seric { 1197ea09d6edSeric *bang++ = '\0'; 11989b6c17a6Seric (void) sprintf(xbuf, "From %s \001d remote from %s\n", bang, buf); 1199ea09d6edSeric template = xbuf; 120074b6e67bSeric } 1201588cad61Seric } 12026c2c3107Seric # endif /* UGLYUUCP */ 1203b31e7f2bSeric expand(template, buf, &buf[sizeof buf - 1], e); 120477b52738Seric putline(buf, fp, m); 1205bc6e2962Seric } 1206bc6e2962Seric /* 120751552439Seric ** PUTBODY -- put the body of a message. 120851552439Seric ** 120951552439Seric ** Parameters: 121051552439Seric ** fp -- file to output onto. 121177b52738Seric ** m -- a mailer descriptor to control output format. 12129a6a5f55Seric ** e -- the envelope to put out. 121351552439Seric ** 121451552439Seric ** Returns: 121551552439Seric ** none. 121651552439Seric ** 121751552439Seric ** Side Effects: 121851552439Seric ** The message is written onto fp. 121951552439Seric */ 122051552439Seric 122177b52738Seric putbody(fp, m, e) 122251552439Seric FILE *fp; 1223588cad61Seric MAILER *m; 12249a6a5f55Seric register ENVELOPE *e; 122551552439Seric { 122677b52738Seric char buf[MAXLINE]; 122751552439Seric 122851552439Seric /* 122951552439Seric ** Output the body of the message 123051552439Seric */ 123151552439Seric 12329a6a5f55Seric if (e->e_dfp == NULL) 123351552439Seric { 12349a6a5f55Seric if (e->e_df != NULL) 12359a6a5f55Seric { 12369a6a5f55Seric e->e_dfp = fopen(e->e_df, "r"); 12379a6a5f55Seric if (e->e_dfp == NULL) 12388f9146b0Srick syserr("putbody: Cannot open %s for %s from %s", 12398f9146b0Srick e->e_df, e->e_to, e->e_from); 12409a6a5f55Seric } 12419a6a5f55Seric else 124277b52738Seric putline("<<< No Message Collected >>>", fp, m); 12439a6a5f55Seric } 12449a6a5f55Seric if (e->e_dfp != NULL) 12459a6a5f55Seric { 12469a6a5f55Seric rewind(e->e_dfp); 124777b52738Seric while (!ferror(fp) && fgets(buf, sizeof buf, e->e_dfp) != NULL) 124824fc8aeeSeric { 124924fc8aeeSeric if (buf[0] == 'F' && bitnset(M_ESCFROM, m->m_flags) && 1250d6fa2b58Sbostic strncmp(buf, "From ", 5) == 0) 12513462ad9eSeric (void) putc('>', fp); 125277b52738Seric putline(buf, fp, m); 125324fc8aeeSeric } 125451552439Seric 12559a6a5f55Seric if (ferror(e->e_dfp)) 125651552439Seric { 125751552439Seric syserr("putbody: read error"); 125851552439Seric ExitStat = EX_IOERR; 125951552439Seric } 126051552439Seric } 126151552439Seric 126251552439Seric (void) fflush(fp); 126351552439Seric if (ferror(fp) && errno != EPIPE) 126451552439Seric { 126551552439Seric syserr("putbody: write error"); 126651552439Seric ExitStat = EX_IOERR; 126751552439Seric } 126851552439Seric errno = 0; 126925a99e2eSeric } 127025a99e2eSeric /* 127125a99e2eSeric ** MAILFILE -- Send a message to a file. 127225a99e2eSeric ** 1273f129ec7dSeric ** If the file has the setuid/setgid bits set, but NO execute 1274f129ec7dSeric ** bits, sendmail will try to become the owner of that file 1275f129ec7dSeric ** rather than the real user. Obviously, this only works if 1276f129ec7dSeric ** sendmail runs as root. 1277f129ec7dSeric ** 1278588cad61Seric ** This could be done as a subordinate mailer, except that it 1279588cad61Seric ** is used implicitly to save messages in ~/dead.letter. We 1280588cad61Seric ** view this as being sufficiently important as to include it 1281588cad61Seric ** here. For example, if the system is dying, we shouldn't have 1282588cad61Seric ** to create another process plus some pipes to save the message. 1283588cad61Seric ** 128425a99e2eSeric ** Parameters: 128525a99e2eSeric ** filename -- the name of the file to send to. 12866259796dSeric ** ctladdr -- the controlling address header -- includes 12876259796dSeric ** the userid/groupid to be when sending. 128825a99e2eSeric ** 128925a99e2eSeric ** Returns: 129025a99e2eSeric ** The exit code associated with the operation. 129125a99e2eSeric ** 129225a99e2eSeric ** Side Effects: 129325a99e2eSeric ** none. 129425a99e2eSeric */ 129525a99e2eSeric 1296b31e7f2bSeric mailfile(filename, ctladdr, e) 129725a99e2eSeric char *filename; 12986259796dSeric ADDRESS *ctladdr; 1299b31e7f2bSeric register ENVELOPE *e; 130025a99e2eSeric { 130125a99e2eSeric register FILE *f; 130232d19d43Seric register int pid; 130315d084d5Seric int mode; 130425a99e2eSeric 130532d19d43Seric /* 130632d19d43Seric ** Fork so we can change permissions here. 130732d19d43Seric ** Note that we MUST use fork, not vfork, because of 130832d19d43Seric ** the complications of calling subroutines, etc. 130932d19d43Seric */ 131032d19d43Seric 131132d19d43Seric DOFORK(fork); 131232d19d43Seric 131332d19d43Seric if (pid < 0) 131432d19d43Seric return (EX_OSERR); 131532d19d43Seric else if (pid == 0) 131632d19d43Seric { 131732d19d43Seric /* child -- actually write to file */ 1318f129ec7dSeric struct stat stb; 1319f129ec7dSeric 13200984da9fSeric (void) signal(SIGINT, SIG_DFL); 13210984da9fSeric (void) signal(SIGHUP, SIG_DFL); 13220984da9fSeric (void) signal(SIGTERM, SIG_DFL); 13233462ad9eSeric (void) umask(OldUmask); 132495f16dc0Seric 1325f129ec7dSeric if (stat(filename, &stb) < 0) 1326e6e1265fSeric stb.st_mode = 0666; 132715d084d5Seric mode = stb.st_mode; 132895f16dc0Seric 132995f16dc0Seric /* limit the errors to those actually caused in the child */ 133095f16dc0Seric errno = 0; 133195f16dc0Seric ExitStat = EX_OK; 133295f16dc0Seric 1333f129ec7dSeric if (bitset(0111, stb.st_mode)) 1334f129ec7dSeric exit(EX_CANTCREAT); 133503827b5fSeric if (ctladdr == NULL) 13368f9146b0Srick ctladdr = &e->e_from; 133715d084d5Seric else 133815d084d5Seric { 133915d084d5Seric /* ignore setuid and setgid bits */ 134015d084d5Seric mode &= ~(S_ISGID|S_ISUID); 134115d084d5Seric } 134215d084d5Seric 13438f9146b0Srick /* we have to open the dfile BEFORE setuid */ 13448f9146b0Srick if (e->e_dfp == NULL && e->e_df != NULL) 13458f9146b0Srick { 13468f9146b0Srick e->e_dfp = fopen(e->e_df, "r"); 134795f16dc0Seric if (e->e_dfp == NULL) 134895f16dc0Seric { 13498f9146b0Srick syserr("mailfile: Cannot open %s for %s from %s", 13508f9146b0Srick e->e_df, e->e_to, e->e_from); 13518f9146b0Srick } 13528f9146b0Srick } 13538f9146b0Srick 135415d084d5Seric if (!bitset(S_ISGID, mode) || setgid(stb.st_gid) < 0) 1355e36b99e2Seric { 135695f16dc0Seric if (ctladdr->q_uid == 0) 135795f16dc0Seric { 1358e36b99e2Seric (void) setgid(DefGid); 1359898a126bSbostic (void) initgroups(DefUser, DefGid); 136095f16dc0Seric } 136195f16dc0Seric else 136295f16dc0Seric { 13636259796dSeric (void) setgid(ctladdr->q_gid); 1364898a126bSbostic (void) initgroups(ctladdr->q_ruser ? 1365898a126bSbostic ctladdr->q_ruser : ctladdr->q_user, 1366898a126bSbostic ctladdr->q_gid); 1367898a126bSbostic } 1368e36b99e2Seric } 136915d084d5Seric if (!bitset(S_ISUID, mode) || setuid(stb.st_uid) < 0) 1370e36b99e2Seric { 1371e36b99e2Seric if (ctladdr->q_uid == 0) 1372e36b99e2Seric (void) setuid(DefUid); 1373e36b99e2Seric else 13746259796dSeric (void) setuid(ctladdr->q_uid); 1375e36b99e2Seric } 137695f16dc0Seric FileName = filename; 137795f16dc0Seric LineNumber = 0; 137827628d59Seric f = dfopen(filename, "a"); 137925a99e2eSeric if (f == NULL) 138095f16dc0Seric { 138195f16dc0Seric message("cannot open"); 138232d19d43Seric exit(EX_CANTCREAT); 138395f16dc0Seric } 138425a99e2eSeric 1385b31e7f2bSeric putfromline(f, ProgMailer, e); 1386b843d759Seric (*e->e_puthdr)(f, ProgMailer, e); 138777b52738Seric putline("\n", f, ProgMailer); 1388b843d759Seric (*e->e_putbody)(f, ProgMailer, e); 138977b52738Seric putline("\n", f, ProgMailer); 139095f16dc0Seric if (ferror(f)) 139195f16dc0Seric { 139295f16dc0Seric message("I/O error"); 139395f16dc0Seric setstat(EX_IOERR); 139495f16dc0Seric } 1395db8841e9Seric (void) fclose(f); 139632d19d43Seric (void) fflush(stdout); 1397e36b99e2Seric 139827628d59Seric /* reset ISUID & ISGID bits for paranoid systems */ 1399c77d1c25Seric (void) chmod(filename, (int) stb.st_mode); 140095f16dc0Seric exit(ExitStat); 140113bbc08cSeric /*NOTREACHED*/ 140232d19d43Seric } 140332d19d43Seric else 140432d19d43Seric { 140532d19d43Seric /* parent -- wait for exit status */ 1406588cad61Seric int st; 140732d19d43Seric 1408588cad61Seric st = waitfor(pid); 1409588cad61Seric if ((st & 0377) != 0) 1410588cad61Seric return (EX_UNAVAILABLE); 1411588cad61Seric else 1412588cad61Seric return ((st >> 8) & 0377); 14138f9146b0Srick /*NOTREACHED*/ 141432d19d43Seric } 141525a99e2eSeric } 1416ea4dc939Seric /* 1417ea4dc939Seric ** SENDALL -- actually send all the messages. 1418ea4dc939Seric ** 1419ea4dc939Seric ** Parameters: 14200c52a0b3Seric ** e -- the envelope to send. 14217b95031aSeric ** mode -- the delivery mode to use. If SM_DEFAULT, use 14227b95031aSeric ** the current SendMode. 1423ea4dc939Seric ** 1424ea4dc939Seric ** Returns: 1425ea4dc939Seric ** none. 1426ea4dc939Seric ** 1427ea4dc939Seric ** Side Effects: 1428ea4dc939Seric ** Scans the send lists and sends everything it finds. 14290c52a0b3Seric ** Delivers any appropriate error messages. 1430276723a8Seric ** If we are running in a non-interactive mode, takes the 1431276723a8Seric ** appropriate action. 1432ea4dc939Seric */ 1433ea4dc939Seric 1434276723a8Seric sendall(e, mode) 14350c52a0b3Seric ENVELOPE *e; 1436276723a8Seric char mode; 1437ea4dc939Seric { 1438e77e673fSeric register ADDRESS *q; 143914a8ed7aSeric bool oldverbose; 1440276723a8Seric int pid; 14411c265a00Seric # ifdef LOCKF 14421c265a00Seric struct flock lfd; 14431c265a00Seric # endif 1444ea4dc939Seric 14457b95031aSeric /* determine actual delivery mode */ 14467b95031aSeric if (mode == SM_DEFAULT) 14477b95031aSeric { 14485f73204aSeric extern bool shouldqueue(); 14497b95031aSeric 145055e150dbSeric if (shouldqueue(e->e_msgpriority, e->e_ctime)) 14517b95031aSeric mode = SM_QUEUE; 14527b95031aSeric else 14537b95031aSeric mode = SendMode; 14547b95031aSeric } 14557b95031aSeric 1456df864a8fSeric if (tTd(13, 1)) 1457772e6e50Seric { 1458276723a8Seric printf("\nSENDALL: mode %c, sendqueue:\n", mode); 14590c52a0b3Seric printaddr(e->e_sendqueue, TRUE); 1460772e6e50Seric } 1461ea4dc939Seric 14620c52a0b3Seric /* 1463276723a8Seric ** Do any preprocessing necessary for the mode we are running. 1464588cad61Seric ** Check to make sure the hop count is reasonable. 1465588cad61Seric ** Delete sends to the sender in mailing lists. 1466276723a8Seric */ 1467276723a8Seric 1468588cad61Seric CurEnv = e; 1469276723a8Seric 14701d57450bSeric if (e->e_hopcount > MaxHopCount) 1471276723a8Seric { 14728f9146b0Srick errno = 0; 14738f9146b0Srick syserr("sendall: too many hops %d (%d max): from %s, to %s", 1474655518ecSeric e->e_hopcount, MaxHopCount, e->e_from.q_paddr, 1475655518ecSeric e->e_sendqueue->q_paddr); 1476588cad61Seric return; 1477588cad61Seric } 1478588cad61Seric 1479588cad61Seric if (!MeToo) 1480276723a8Seric { 1481f3d6c55cSeric extern ADDRESS *recipient(); 1482f3d6c55cSeric 1483588cad61Seric e->e_from.q_flags |= QDONTSEND; 1484*75f1ade9Seric if (tTd(13, 5)) 1485*75f1ade9Seric { 1486*75f1ade9Seric printf("sendall: QDONTSEND "); 1487*75f1ade9Seric printaddr(&e->e_from, FALSE); 1488*75f1ade9Seric } 1489b843d759Seric (void) recipient(&e->e_from, &e->e_sendqueue, e); 1490276723a8Seric } 1491588cad61Seric 1492588cad61Seric # ifdef QUEUE 1493b254bcb6Seric if ((mode == SM_QUEUE || mode == SM_FORK || 1494b254bcb6Seric (mode != SM_VERIFY && SuperSafe)) && 1495b254bcb6Seric !bitset(EF_INQUEUE, e->e_flags)) 1496e020b127Seric queueup(e, TRUE, mode == SM_QUEUE); 14976c2c3107Seric #endif /* QUEUE */ 1498276723a8Seric 1499276723a8Seric oldverbose = Verbose; 1500276723a8Seric switch (mode) 1501276723a8Seric { 1502276723a8Seric case SM_VERIFY: 1503276723a8Seric Verbose = TRUE; 1504276723a8Seric break; 1505276723a8Seric 1506276723a8Seric case SM_QUEUE: 1507c7f5410dSeric queueonly: 1508b254bcb6Seric e->e_flags |= EF_INQUEUE|EF_KEEPQUEUE; 1509276723a8Seric return; 1510276723a8Seric 1511276723a8Seric case SM_FORK: 15129a6a5f55Seric if (e->e_xfp != NULL) 15139a6a5f55Seric (void) fflush(e->e_xfp); 1514c7f5410dSeric 1515c7f5410dSeric # ifdef LOCKF 1516c7f5410dSeric /* 1517c7f5410dSeric ** Since lockf has the interesting semantic that the 15181c265a00Seric ** lock is lost when we fork, we have to risk losing 15191c265a00Seric ** the lock here by closing before the fork, and then 15201c265a00Seric ** trying to get it back in the child. 1521c7f5410dSeric */ 1522c7f5410dSeric 1523e020b127Seric if (e->e_lockfp != NULL) 1524c7f5410dSeric { 1525e020b127Seric (void) fclose(e->e_lockfp); 1526e020b127Seric e->e_lockfp = NULL; 1527c7f5410dSeric } 1528c7f5410dSeric # endif /* LOCKF */ 1529c7f5410dSeric 1530276723a8Seric pid = fork(); 1531276723a8Seric if (pid < 0) 1532276723a8Seric { 1533c7f5410dSeric goto queueonly; 1534276723a8Seric } 1535276723a8Seric else if (pid > 0) 1536a6fce3d8Seric { 1537a6fce3d8Seric /* be sure we leave the temp files to our child */ 1538b254bcb6Seric e->e_id = e->e_df = NULL; 1539c7f5410dSeric # ifndef LOCKF 1540e020b127Seric if (e->e_lockfp != NULL) 1541*75f1ade9Seric { 1542e020b127Seric (void) fclose(e->e_lockfp); 1543*75f1ade9Seric e->e_lockfp = NULL; 1544*75f1ade9Seric } 1545c7f5410dSeric # endif 1546*75f1ade9Seric 1547*75f1ade9Seric /* close any random open files in the envelope */ 1548*75f1ade9Seric if (e->e_dfp != NULL) 1549*75f1ade9Seric { 1550*75f1ade9Seric (void) fclose(e->e_dfp); 1551*75f1ade9Seric e->e_dfp = NULL; 1552*75f1ade9Seric } 1553*75f1ade9Seric if (e->e_xfp != NULL) 1554*75f1ade9Seric { 1555*75f1ade9Seric (void) fclose(e->e_xfp); 1556*75f1ade9Seric e->e_xfp = NULL; 1557*75f1ade9Seric } 1558276723a8Seric return; 1559a6fce3d8Seric } 1560276723a8Seric 1561276723a8Seric /* double fork to avoid zombies */ 1562276723a8Seric if (fork() > 0) 1563276723a8Seric exit(EX_OK); 1564276723a8Seric 1565a6fce3d8Seric /* be sure we are immune from the terminal */ 1566769e215aSeric disconnect(FALSE); 1567a6fce3d8Seric 1568e6720d51Seric # ifdef LOCKF 1569e6720d51Seric /* 1570c7f5410dSeric ** Now try to get our lock back. 1571e6720d51Seric */ 1572e6720d51Seric 15731c265a00Seric lfd.l_type = F_WRLCK; 15741c265a00Seric lfd.l_whence = lfd.l_start = lfd.l_len = 0; 1575e020b127Seric e->e_lockfp = fopen(queuename(e, 'q'), "r+"); 1576e020b127Seric if (e->e_lockfp == NULL || 15771c265a00Seric fcntl(fileno(e->e_lockfp), F_SETLK, &lfd) < 0) 1578e6720d51Seric { 1579e6720d51Seric /* oops.... lost it */ 1580e6720d51Seric # ifdef LOG 1581e6720d51Seric if (LogLevel > 5) 1582c7f5410dSeric syslog(LOG_NOTICE, "%s: lost lock: %m", 1583b31e7f2bSeric e->e_id); 1584e6720d51Seric # endif /* LOG */ 1585e6720d51Seric exit(EX_OK); 1586e6720d51Seric } 1587e6720d51Seric # endif /* LOCKF */ 1588e6720d51Seric 1589276723a8Seric break; 1590276723a8Seric } 1591276723a8Seric 1592276723a8Seric /* 15930c52a0b3Seric ** Run through the list and send everything. 15940c52a0b3Seric */ 15950c52a0b3Seric 1596655518ecSeric e->e_nsent = 0; 15970c52a0b3Seric for (q = e->e_sendqueue; q != NULL; q = q->q_next) 1598ea4dc939Seric { 1599276723a8Seric if (mode == SM_VERIFY) 1600ea4dc939Seric { 1601a6fce3d8Seric e->e_to = q->q_paddr; 1602e77e673fSeric if (!bitset(QDONTSEND|QBADADDR, q->q_flags)) 1603ea4dc939Seric message(Arpa_Info, "deliverable"); 1604ea4dc939Seric } 1605dde5acadSeric else if (!bitset(QDONTSEND, q->q_flags)) 1606dde5acadSeric { 1607de1179f5Seric # ifdef QUEUE 1608dde5acadSeric /* 1609dde5acadSeric ** Checkpoint the send list every few addresses 1610dde5acadSeric */ 1611dde5acadSeric 1612655518ecSeric if (e->e_nsent >= CheckpointInterval) 1613dde5acadSeric { 1614e020b127Seric queueup(e, TRUE, FALSE); 1615655518ecSeric e->e_nsent = 0; 1616dde5acadSeric } 1617de1179f5Seric # endif /* QUEUE */ 1618655518ecSeric (void) deliver(e, q); 1619dde5acadSeric } 1620ea4dc939Seric } 162114a8ed7aSeric Verbose = oldverbose; 16220c52a0b3Seric 16230c52a0b3Seric /* 16240c52a0b3Seric ** Now run through and check for errors. 16250c52a0b3Seric */ 16260c52a0b3Seric 1627e020b127Seric if (mode == SM_VERIFY) 16280c52a0b3Seric return; 16290c52a0b3Seric 16300c52a0b3Seric for (q = e->e_sendqueue; q != NULL; q = q->q_next) 16310c52a0b3Seric { 16320c52a0b3Seric register ADDRESS *qq; 16330c52a0b3Seric 1634df864a8fSeric if (tTd(13, 3)) 1635df864a8fSeric { 1636df864a8fSeric printf("Checking "); 1637df864a8fSeric printaddr(q, FALSE); 1638df864a8fSeric } 1639df864a8fSeric 1640b254bcb6Seric /* only send errors if the message failed */ 1641b254bcb6Seric if (!bitset(QBADADDR, q->q_flags)) 1642b254bcb6Seric continue; 16430c52a0b3Seric 16440c52a0b3Seric /* we have an address that failed -- find the parent */ 16450c52a0b3Seric for (qq = q; qq != NULL; qq = qq->q_alias) 16460c52a0b3Seric { 16470c52a0b3Seric char obuf[MAXNAME + 6]; 16480c52a0b3Seric extern char *aliaslookup(); 16490c52a0b3Seric 16500c52a0b3Seric /* we can only have owners for local addresses */ 165157fc6f17Seric if (!bitnset(M_LOCAL, qq->q_mailer->m_flags)) 16520c52a0b3Seric continue; 16530c52a0b3Seric 16540c52a0b3Seric /* see if the owner list exists */ 16550c52a0b3Seric (void) strcpy(obuf, "owner-"); 1656cec031e3Seric if (strncmp(qq->q_user, "owner-", 6) == 0) 1657cec031e3Seric (void) strcat(obuf, "owner"); 1658cec031e3Seric else 16590c52a0b3Seric (void) strcat(obuf, qq->q_user); 166055e150dbSeric if (!bitnset(M_USR_UPPER, qq->q_mailer->m_flags)) 1661ef137175Sbostic makelower(obuf); 16620c52a0b3Seric if (aliaslookup(obuf) == NULL) 16630c52a0b3Seric continue; 16640c52a0b3Seric 1665df864a8fSeric if (tTd(13, 4)) 1666df864a8fSeric printf("Errors to %s\n", obuf); 1667df864a8fSeric 16680c52a0b3Seric /* owner list exists -- add it to the error queue */ 1669b843d759Seric sendtolist(obuf, (ADDRESS *) NULL, &e->e_errorqueue, e); 167055e150dbSeric 167155e150dbSeric /* and set the return path to point to it */ 167255e150dbSeric e->e_returnpath = newstr(obuf); 167355e150dbSeric 167453e3fa05Seric ErrorMode = EM_MAIL; 16750c52a0b3Seric break; 16760c52a0b3Seric } 16770c52a0b3Seric 16780c52a0b3Seric /* if we did not find an owner, send to the sender */ 16797455aa0bSeric if (qq == NULL && bitset(QBADADDR, q->q_flags)) 1680b843d759Seric sendtolist(e->e_from.q_paddr, qq, &e->e_errorqueue, e); 16810c52a0b3Seric } 1682276723a8Seric 1683276723a8Seric if (mode == SM_FORK) 1684276723a8Seric finis(); 16850c52a0b3Seric } 1686e103b48fSeric /* 1687e103b48fSeric ** HOSTSIGNATURE -- return the "signature" for a host. 1688e103b48fSeric ** 1689e103b48fSeric ** The signature describes how we are going to send this -- it 1690e103b48fSeric ** can be just the hostname (for non-Internet hosts) or can be 1691e103b48fSeric ** an ordered list of MX hosts. 1692e103b48fSeric ** 1693e103b48fSeric ** Parameters: 1694e103b48fSeric ** m -- the mailer describing this host. 1695e103b48fSeric ** host -- the host name. 1696e103b48fSeric ** e -- the current envelope. 1697e103b48fSeric ** 1698e103b48fSeric ** Returns: 1699e103b48fSeric ** The signature for this host. 1700e103b48fSeric ** 1701e103b48fSeric ** Side Effects: 1702e103b48fSeric ** Can tweak the symbol table. 1703e103b48fSeric */ 1704e103b48fSeric 1705e103b48fSeric char * 1706e103b48fSeric hostsignature(m, host, e) 1707e103b48fSeric register MAILER *m; 1708e103b48fSeric char *host; 1709e103b48fSeric ENVELOPE *e; 1710e103b48fSeric { 1711e103b48fSeric register char *p; 1712e103b48fSeric register STAB *s; 1713e103b48fSeric int i; 1714e103b48fSeric int len; 1715e103b48fSeric #ifdef NAMED_BIND 1716e103b48fSeric int nmx; 1717e103b48fSeric auto int rcode; 1718e103b48fSeric char *mxhosts[MAXMXHOSTS + 1]; 1719e103b48fSeric static char myhostbuf[MAXNAME]; 1720e103b48fSeric #endif 1721e103b48fSeric 1722e103b48fSeric /* 1723e103b48fSeric ** Check to see if this uses IPC -- if not, it can't have MX records. 1724e103b48fSeric */ 1725e103b48fSeric 1726e103b48fSeric p = m->m_mailer; 1727e103b48fSeric if (strcmp(p, "[IPC]") != 0 && strcmp(p, "[TCP]") != 0) 1728e103b48fSeric { 1729e103b48fSeric /* just an ordinary mailer */ 1730e103b48fSeric return host; 1731e103b48fSeric } 1732e103b48fSeric 1733e103b48fSeric /* 1734e103b48fSeric ** If it is a numeric address, just return it. 1735e103b48fSeric */ 1736e103b48fSeric 1737e103b48fSeric if (host[0] == '[') 1738e103b48fSeric return host; 1739e103b48fSeric 1740e103b48fSeric /* 1741e103b48fSeric ** Look it up in the symbol table. 1742e103b48fSeric */ 1743e103b48fSeric 1744e103b48fSeric s = stab(host, ST_HOSTSIG, ST_ENTER); 1745e103b48fSeric if (s->s_hostsig != NULL) 1746e103b48fSeric return s->s_hostsig; 1747e103b48fSeric 1748e103b48fSeric /* 1749e103b48fSeric ** Not already there -- create a signature. 1750e103b48fSeric */ 1751e103b48fSeric 1752e103b48fSeric #ifdef NAMED_BIND 1753e103b48fSeric if (myhostbuf[0] == '\0') 1754e103b48fSeric expand("\001j", myhostbuf, &myhostbuf[sizeof myhostbuf - 1], e); 1755e103b48fSeric 1756e103b48fSeric nmx = getmxrr(host, mxhosts, myhostbuf, &rcode); 1757e103b48fSeric if (nmx <= 0) 1758e103b48fSeric { 1759e103b48fSeric register MCI *mci; 1760e103b48fSeric extern int errno; 1761e103b48fSeric extern MCI *mci_get(); 1762e103b48fSeric 1763e103b48fSeric /* update the connection info for this host */ 1764e103b48fSeric mci = mci_get(host, m); 1765e103b48fSeric mci->mci_exitstat = rcode; 1766e103b48fSeric mci->mci_errno = errno; 1767e103b48fSeric 1768e103b48fSeric /* and return the original host name as the signature */ 1769e103b48fSeric s->s_hostsig = host; 1770e103b48fSeric return host; 1771e103b48fSeric } 1772e103b48fSeric 1773e103b48fSeric len = 0; 1774e103b48fSeric for (i = 0; i < nmx; i++) 1775e103b48fSeric { 1776e103b48fSeric len += strlen(mxhosts[i]) + 1; 1777e103b48fSeric } 1778e103b48fSeric s->s_hostsig = p = xalloc(len); 1779e103b48fSeric for (i = 0; i < nmx; i++) 1780e103b48fSeric { 1781e103b48fSeric if (i != 0) 1782e103b48fSeric *p++ = ':'; 1783e103b48fSeric strcpy(p, mxhosts[i]); 1784e103b48fSeric p += strlen(p); 1785e103b48fSeric } 1786e103b48fSeric makelower(s->s_hostsig); 1787e103b48fSeric #else 1788e103b48fSeric /* not using BIND -- the signature is just the host name */ 1789e103b48fSeric s->s_hostsig = host; 1790e103b48fSeric #endif 1791e103b48fSeric if (tTd(17, 1)) 1792e103b48fSeric printf("hostsignature(%s) = %s\n", host, s->s_hostsig); 1793e103b48fSeric return s->s_hostsig; 1794e103b48fSeric } 1795