125a99e2eSeric # include <signal.h> 254aa2b0fSeric # include <errno.h> 3b20b3270Seric # include "sendmail.h" 4c77d1c25Seric # include <sys/stat.h> 525a99e2eSeric 6*3bea8136Seric SCCSID(@(#)deliver.c 3.107 09/05/82); 7259cace7Seric 825a99e2eSeric /* 913bbc08cSeric ** DELIVER -- Deliver a message to a list of addresses. 1013bbc08cSeric ** 1113bbc08cSeric ** This routine delivers to everyone on the same host as the 1213bbc08cSeric ** user on the head of the list. It is clever about mailers 1313bbc08cSeric ** that don't handle multiple users. It is NOT guaranteed 1413bbc08cSeric ** that it will deliver to all these addresses however -- so 1513bbc08cSeric ** deliver should be called once for each address on the 1613bbc08cSeric ** list. 1725a99e2eSeric ** 1825a99e2eSeric ** Parameters: 19c77d1c25Seric ** firstto -- head of the address list to deliver to. 2025a99e2eSeric ** 2125a99e2eSeric ** Returns: 2225a99e2eSeric ** zero -- successfully delivered. 2325a99e2eSeric ** else -- some failure, see ExitStat for more info. 2425a99e2eSeric ** 2525a99e2eSeric ** Side Effects: 2625a99e2eSeric ** The standard input is passed off to someone. 2725a99e2eSeric */ 2825a99e2eSeric 2951552439Seric deliver(firstto) 30c77d1c25Seric ADDRESS *firstto; 3125a99e2eSeric { 3278442df3Seric char *host; /* host being sent to */ 3378442df3Seric char *user; /* user being sent to */ 3425a99e2eSeric char **pvp; 355dfc646bSeric register char **mvp; 3625a99e2eSeric register char *p; 3778442df3Seric register struct mailer *m; /* mailer for this recipient */ 382a6e0786Seric extern bool checkcompat(); 395dfc646bSeric char *pv[MAXPV+1]; 4078442df3Seric char tobuf[MAXLINE]; /* text line of to people */ 415dfc646bSeric char buf[MAXNAME]; 426259796dSeric ADDRESS *ctladdr; 436259796dSeric extern ADDRESS *getctladdr(); 4478442df3Seric char tfrombuf[MAXNAME]; /* translated from person */ 4578442df3Seric extern char **prescan(); 46c77d1c25Seric register ADDRESS *to = firstto; 47c579ef51Seric bool clever = FALSE; /* running user smtp to this mailer */ 48772e6e50Seric ADDRESS *tochain = NULL; /* chain of users in this mailer call */ 49da2935e1Seric bool notopen = TRUE; /* set if connection not quite open */ 505826d9d3Seric register int rcode; /* response code */ 5125a99e2eSeric 5235490626Seric errno = 0; 53da2935e1Seric if (bitset(QDONTSEND, to->q_flags)) 545dfc646bSeric return (0); 5525a99e2eSeric 5651552439Seric m = to->q_mailer; 5751552439Seric host = to->q_host; 5851552439Seric 5925a99e2eSeric # ifdef DEBUG 606ef48975Seric if (tTd(10, 1)) 615dfc646bSeric printf("\n--deliver, mailer=%d, host=`%s', first user=`%s'\n", 6251552439Seric m->m_mno, host, to->q_user); 6325a99e2eSeric # endif DEBUG 64f3dbc832Seric 65f3dbc832Seric /* 66f3dbc832Seric ** If this mailer is expensive, and if we don't want to make 67f3dbc832Seric ** connections now, just mark these addresses and return. 68f3dbc832Seric ** This is useful if we want to batch connections to 69f3dbc832Seric ** reduce load. This will cause the messages to be 70f3dbc832Seric ** queued up, and a daemon will come along to send the 71f3dbc832Seric ** messages later. 72f3dbc832Seric ** This should be on a per-mailer basis. 73f3dbc832Seric */ 74f3dbc832Seric 75f3dbc832Seric if (NoConnect && !QueueRun && bitset(M_EXPENSIVE, m->m_flags)) 76f3dbc832Seric { 77f3dbc832Seric for (; to != NULL; to = to->q_next) 780d4209fdSeric if (!bitset(QDONTSEND, to->q_flags) && 790d4209fdSeric to->q_mailer == firstto->q_mailer) 80f3dbc832Seric to->q_flags |= QQUEUEUP|QDONTSEND; 81f3dbc832Seric return (0); 82f3dbc832Seric } 83f3dbc832Seric 8425a99e2eSeric /* 855dfc646bSeric ** Do initial argv setup. 865dfc646bSeric ** Insert the mailer name. Notice that $x expansion is 875dfc646bSeric ** NOT done on the mailer name. Then, if the mailer has 885dfc646bSeric ** a picky -f flag, we insert it as appropriate. This 895dfc646bSeric ** code does not check for 'pv' overflow; this places a 905dfc646bSeric ** manifest lower limit of 4 for MAXPV. 91*3bea8136Seric ** The from address rewrite is expected to make 92*3bea8136Seric ** the address relative to the other end. 935dfc646bSeric */ 945dfc646bSeric 9578442df3Seric /* rewrite from address, using rewriting rules */ 96*3bea8136Seric expand("$f", buf, &buf[sizeof buf - 1], CurEnv); 9778442df3Seric mvp = prescan(buf, '\0'); 98*3bea8136Seric rewrite(mvp, m->m_s_rwset); 9978442df3Seric cataddr(mvp, tfrombuf, sizeof tfrombuf); 10078442df3Seric 10178442df3Seric define('g', tfrombuf); /* translated sender address */ 1025dfc646bSeric define('h', host); /* to host */ 1035dfc646bSeric Errors = 0; 1045dfc646bSeric pvp = pv; 1055dfc646bSeric *pvp++ = m->m_argv[0]; 1065dfc646bSeric 1075dfc646bSeric /* insert -f or -r flag as appropriate */ 1085dfc646bSeric if (bitset(M_FOPT|M_ROPT, m->m_flags) && FromFlag) 1095dfc646bSeric { 1105dfc646bSeric if (bitset(M_FOPT, m->m_flags)) 1115dfc646bSeric *pvp++ = "-f"; 1125dfc646bSeric else 1135dfc646bSeric *pvp++ = "-r"; 11451552439Seric expand("$g", buf, &buf[sizeof buf - 1], CurEnv); 1155dfc646bSeric *pvp++ = newstr(buf); 1165dfc646bSeric } 1175dfc646bSeric 1185dfc646bSeric /* 1195dfc646bSeric ** Append the other fixed parts of the argv. These run 1205dfc646bSeric ** up to the first entry containing "$u". There can only 1215dfc646bSeric ** be one of these, and there are only a few more slots 1225dfc646bSeric ** in the pv after it. 1235dfc646bSeric */ 1245dfc646bSeric 1255dfc646bSeric for (mvp = m->m_argv; (p = *++mvp) != NULL; ) 1265dfc646bSeric { 1275dfc646bSeric while ((p = index(p, '$')) != NULL) 1285dfc646bSeric if (*++p == 'u') 1295dfc646bSeric break; 1305dfc646bSeric if (p != NULL) 1315dfc646bSeric break; 1325dfc646bSeric 1335dfc646bSeric /* this entry is safe -- go ahead and process it */ 13451552439Seric expand(*mvp, buf, &buf[sizeof buf - 1], CurEnv); 1355dfc646bSeric *pvp++ = newstr(buf); 1365dfc646bSeric if (pvp >= &pv[MAXPV - 3]) 1375dfc646bSeric { 1385dfc646bSeric syserr("Too many parameters to %s before $u", pv[0]); 1395dfc646bSeric return (-1); 1405dfc646bSeric } 1415dfc646bSeric } 142c579ef51Seric 14333db8731Seric /* 14433db8731Seric ** If we have no substitution for the user name in the argument 14533db8731Seric ** list, we know that we must supply the names otherwise -- and 14633db8731Seric ** SMTP is the answer!! 14733db8731Seric */ 14833db8731Seric 1495dfc646bSeric if (*mvp == NULL) 150c579ef51Seric { 151c579ef51Seric /* running SMTP */ 1522c7e1b8dSeric # ifdef SMTP 153c579ef51Seric clever = TRUE; 154c579ef51Seric *pvp = NULL; 1552c7e1b8dSeric # else SMTP 15633db8731Seric /* oops! we don't implement SMTP */ 1572c7e1b8dSeric syserr("SMTP style mailer"); 1582c7e1b8dSeric return (EX_SOFTWARE); 1592c7e1b8dSeric # endif SMTP 160c579ef51Seric } 1615dfc646bSeric 1625dfc646bSeric /* 1635dfc646bSeric ** At this point *mvp points to the argument with $u. We 1645dfc646bSeric ** run through our address list and append all the addresses 1655dfc646bSeric ** we can. If we run out of space, do not fret! We can 1665dfc646bSeric ** always send another copy later. 1675dfc646bSeric */ 1685dfc646bSeric 1695dfc646bSeric tobuf[0] = '\0'; 1707a941e7aSeric CurEnv->e_to = tobuf; 1716259796dSeric ctladdr = NULL; 1725dfc646bSeric for (; to != NULL; to = to->q_next) 1735dfc646bSeric { 1745dfc646bSeric /* avoid sending multiple recipients to dumb mailers */ 175bea22b26Seric if (tobuf[0] != '\0' && !bitset(M_MUSER, m->m_flags)) 1765dfc646bSeric break; 1775dfc646bSeric 1785dfc646bSeric /* if already sent or not for this host, don't send */ 179da2935e1Seric if (bitset(QDONTSEND, to->q_flags) || 180da2935e1Seric strcmp(to->q_host, host) != 0 || 181da2935e1Seric to->q_mailer != firstto->q_mailer) 1825dfc646bSeric continue; 1836259796dSeric 184772e6e50Seric # ifdef DEBUG 1856ef48975Seric if (tTd(10, 1)) 186772e6e50Seric { 187772e6e50Seric printf("\nsend to "); 188772e6e50Seric printaddr(to, FALSE); 189772e6e50Seric } 190772e6e50Seric # endif DEBUG 191772e6e50Seric 1926259796dSeric /* compute effective uid/gid when sending */ 1937da1035fSeric if (to->q_mailer == ProgMailer) 1946259796dSeric ctladdr = getctladdr(to); 1956259796dSeric 1965dfc646bSeric user = to->q_user; 1977a941e7aSeric CurEnv->e_to = to->q_paddr; 1985dfc646bSeric to->q_flags |= QDONTSEND; 1995dfc646bSeric 2005dfc646bSeric /* 2015dfc646bSeric ** Check to see that these people are allowed to 2025dfc646bSeric ** talk to each other. 2032a6e0786Seric */ 2042a6e0786Seric 2052a6e0786Seric if (!checkcompat(to)) 2065dfc646bSeric { 2075dfc646bSeric giveresponse(EX_UNAVAILABLE, TRUE, m); 2085dfc646bSeric continue; 2095dfc646bSeric } 2102a6e0786Seric 2112a6e0786Seric /* 2129ec9501bSeric ** Strip quote bits from names if the mailer is dumb 2139ec9501bSeric ** about them. 21425a99e2eSeric */ 21525a99e2eSeric 2162a6e0786Seric if (bitset(M_STRIPQ, m->m_flags)) 21725a99e2eSeric { 2189ec9501bSeric stripquotes(user, TRUE); 2199ec9501bSeric stripquotes(host, TRUE); 2209ec9501bSeric } 2219ec9501bSeric else 2229ec9501bSeric { 2239ec9501bSeric stripquotes(user, FALSE); 2249ec9501bSeric stripquotes(host, FALSE); 22525a99e2eSeric } 22625a99e2eSeric 22725a99e2eSeric /* 228da2935e1Seric ** Do initial connection setup if needed. 229da2935e1Seric */ 230da2935e1Seric 231da2935e1Seric if (notopen) 232da2935e1Seric { 233da2935e1Seric message(Arpa_Info, "Connecting to %s.%s...", host, m->m_name); 234da2935e1Seric # ifdef SMTP 235da2935e1Seric if (clever) 236da2935e1Seric { 237da2935e1Seric /* send the initial SMTP protocol */ 2385826d9d3Seric rcode = smtpinit(m, pv, (ADDRESS *) NULL); 239da2935e1Seric } 240da2935e1Seric # ifdef SMTP 241da2935e1Seric notopen = FALSE; 242da2935e1Seric } 243da2935e1Seric 244da2935e1Seric /* 245508daeccSeric ** Pass it to the other host if we are running SMTP. 246508daeccSeric */ 247508daeccSeric 248508daeccSeric if (clever) 249508daeccSeric { 250508daeccSeric # ifdef SMTP 2515826d9d3Seric if (rcode == EX_OK) 2525826d9d3Seric rcode = smtprcpt(to); 2535826d9d3Seric if (rcode != EX_OK) 254508daeccSeric { 2555826d9d3Seric if (rcode == EX_TEMPFAIL) 256508daeccSeric to->q_flags |= QQUEUEUP; 257508daeccSeric else 258508daeccSeric to->q_flags |= QBADADDR; 2595826d9d3Seric giveresponse(rcode, TRUE, m); 260508daeccSeric } 261508daeccSeric # else SMTP 262508daeccSeric syserr("trying to be clever"); 263508daeccSeric # endif SMTP 264508daeccSeric } 265508daeccSeric 266508daeccSeric /* 2673efaed6eSeric ** If an error message has already been given, don't 2683efaed6eSeric ** bother to send to this address. 2693efaed6eSeric ** 2703efaed6eSeric ** >>>>>>>>>> This clause assumes that the local mailer 2713efaed6eSeric ** >> NOTE >> cannot do any further aliasing; that 2723efaed6eSeric ** >>>>>>>>>> function is subsumed by sendmail. 2733efaed6eSeric */ 2743efaed6eSeric 2756cae517dSeric if (bitset(QBADADDR|QQUEUEUP, to->q_flags)) 2763efaed6eSeric continue; 2773efaed6eSeric 278f2fec898Seric /* save statistics.... */ 2797da1035fSeric Stat.stat_nt[to->q_mailer->m_mno]++; 2807a941e7aSeric Stat.stat_bt[to->q_mailer->m_mno] += kbytes(CurEnv->e_msgsize); 281f2fec898Seric 2823efaed6eSeric /* 28325a99e2eSeric ** See if this user name is "special". 28425a99e2eSeric ** If the user name has a slash in it, assume that this 28551552439Seric ** is a file -- send it off without further ado. Note 28651552439Seric ** that this type of addresses is not processed along 28751552439Seric ** with the others, so we fudge on the To person. 28825a99e2eSeric */ 28925a99e2eSeric 2907da1035fSeric if (m == LocalMailer) 29125a99e2eSeric { 292a49f24c0Seric if (user[0] == '/') 29325a99e2eSeric { 2945826d9d3Seric rcode = mailfile(user, getctladdr(to)); 2955826d9d3Seric giveresponse(rcode, TRUE, m); 2965dfc646bSeric continue; 29725a99e2eSeric } 29825a99e2eSeric } 29925a99e2eSeric 30013bbc08cSeric /* 30113bbc08cSeric ** Address is verified -- add this user to mailer 30213bbc08cSeric ** argv, and add it to the print list of recipients. 30313bbc08cSeric */ 30413bbc08cSeric 305508daeccSeric /* link together the chain of recipients */ 306508daeccSeric to->q_tchain = tochain; 307508daeccSeric tochain = to; 308508daeccSeric 3095dfc646bSeric /* create list of users for error messages */ 3105dfc646bSeric if (tobuf[0] != '\0') 311db8841e9Seric (void) strcat(tobuf, ","); 312db8841e9Seric (void) strcat(tobuf, to->q_paddr); 3135dfc646bSeric define('u', user); /* to user */ 314c2567733Seric define('z', to->q_home); /* user's home */ 3155dfc646bSeric 316c579ef51Seric /* 317508daeccSeric ** Expand out this user into argument list. 318c579ef51Seric */ 319c579ef51Seric 320508daeccSeric if (!clever) 321c579ef51Seric { 32251552439Seric expand(*mvp, buf, &buf[sizeof buf - 1], CurEnv); 3235dfc646bSeric *pvp++ = newstr(buf); 3245dfc646bSeric if (pvp >= &pv[MAXPV - 2]) 3255dfc646bSeric { 3265dfc646bSeric /* allow some space for trailing parms */ 3275dfc646bSeric break; 3285dfc646bSeric } 3295dfc646bSeric } 330c579ef51Seric } 3315dfc646bSeric 332145b49b1Seric /* see if any addresses still exist */ 333145b49b1Seric if (tobuf[0] == '\0') 334c579ef51Seric { 3352c7e1b8dSeric # ifdef SMTP 336c579ef51Seric if (clever) 3374a3f06b2Seric smtpquit(pv[0], FALSE); 3382c7e1b8dSeric # endif SMTP 3395e663df1Seric define('g', (char *) NULL); 340145b49b1Seric return (0); 341c579ef51Seric } 342145b49b1Seric 3435dfc646bSeric /* print out messages as full list */ 3447a941e7aSeric CurEnv->e_to = tobuf; 3455dfc646bSeric 3465dfc646bSeric /* 3475dfc646bSeric ** Fill out any parameters after the $u parameter. 3485dfc646bSeric */ 3495dfc646bSeric 350c579ef51Seric while (!clever && *++mvp != NULL) 3515dfc646bSeric { 35251552439Seric expand(*mvp, buf, &buf[sizeof buf - 1], CurEnv); 3535dfc646bSeric *pvp++ = newstr(buf); 3545dfc646bSeric if (pvp >= &pv[MAXPV]) 3555dfc646bSeric syserr("deliver: pv overflow after $u for %s", pv[0]); 3565dfc646bSeric } 3575dfc646bSeric *pvp++ = NULL; 3585dfc646bSeric 35925a99e2eSeric /* 36025a99e2eSeric ** Call the mailer. 3616328bdf7Seric ** The argument vector gets built, pipes 36225a99e2eSeric ** are created as necessary, and we fork & exec as 3636328bdf7Seric ** appropriate. 364c579ef51Seric ** If we are running SMTP, we just need to clean up. 36525a99e2eSeric */ 36625a99e2eSeric 3676259796dSeric if (ctladdr == NULL) 3687a941e7aSeric ctladdr = &CurEnv->e_from; 3692c7e1b8dSeric # ifdef SMTP 370c579ef51Seric if (clever) 371c579ef51Seric { 3725826d9d3Seric rcode = smtpfinish(m, CurEnv); 3735826d9d3Seric if (rcode != EX_OK) 3745826d9d3Seric giveresponse(rcode, TRUE, m); 3755826d9d3Seric smtpquit(pv[0], rcode == EX_OK); 376c579ef51Seric } 377c579ef51Seric else 3782c7e1b8dSeric # endif SMTP 3795826d9d3Seric rcode = sendoff(m, pv, ctladdr); 3805dfc646bSeric 381c77d1c25Seric /* 382c77d1c25Seric ** If we got a temporary failure, arrange to queue the 383c77d1c25Seric ** addressees. 384c77d1c25Seric */ 385c77d1c25Seric 3865826d9d3Seric if (rcode == EX_TEMPFAIL) 387c77d1c25Seric { 388772e6e50Seric for (to = tochain; to != NULL; to = to->q_tchain) 389c77d1c25Seric to->q_flags |= QQUEUEUP; 390c77d1c25Seric } 391c77d1c25Seric 39235490626Seric errno = 0; 3935e663df1Seric define('g', (char *) NULL); 3945826d9d3Seric return (rcode); 39525a99e2eSeric } 3965dfc646bSeric /* 39732d19d43Seric ** DOFORK -- do a fork, retrying a couple of times on failure. 39832d19d43Seric ** 39932d19d43Seric ** This MUST be a macro, since after a vfork we are running 40032d19d43Seric ** two processes on the same stack!!! 40132d19d43Seric ** 40232d19d43Seric ** Parameters: 40332d19d43Seric ** none. 40432d19d43Seric ** 40532d19d43Seric ** Returns: 40632d19d43Seric ** From a macro??? You've got to be kidding! 40732d19d43Seric ** 40832d19d43Seric ** Side Effects: 40932d19d43Seric ** Modifies the ==> LOCAL <== variable 'pid', leaving: 41032d19d43Seric ** pid of child in parent, zero in child. 41132d19d43Seric ** -1 on unrecoverable error. 41232d19d43Seric ** 41332d19d43Seric ** Notes: 41432d19d43Seric ** I'm awfully sorry this looks so awful. That's 41532d19d43Seric ** vfork for you..... 41632d19d43Seric */ 41732d19d43Seric 41832d19d43Seric # define NFORKTRIES 5 41932d19d43Seric # ifdef VFORK 42032d19d43Seric # define XFORK vfork 42132d19d43Seric # else VFORK 42232d19d43Seric # define XFORK fork 42332d19d43Seric # endif VFORK 42432d19d43Seric 42532d19d43Seric # define DOFORK(fORKfN) \ 42632d19d43Seric {\ 42732d19d43Seric register int i;\ 42832d19d43Seric \ 42932d19d43Seric for (i = NFORKTRIES; i-- > 0; )\ 43032d19d43Seric {\ 43132d19d43Seric pid = fORKfN();\ 43232d19d43Seric if (pid >= 0)\ 43332d19d43Seric break;\ 4345e663df1Seric sleep(NFORKTRIES - i);\ 43532d19d43Seric }\ 43632d19d43Seric } 43732d19d43Seric /* 4382ed72599Seric ** DOFORK -- simple fork interface to DOFORK. 4392ed72599Seric ** 4402ed72599Seric ** Parameters: 4412ed72599Seric ** none. 4422ed72599Seric ** 4432ed72599Seric ** Returns: 4442ed72599Seric ** pid of child in parent. 4452ed72599Seric ** zero in child. 4462ed72599Seric ** -1 on error. 4472ed72599Seric ** 4482ed72599Seric ** Side Effects: 4492ed72599Seric ** returns twice, once in parent and once in child. 4502ed72599Seric */ 4512ed72599Seric 4522ed72599Seric dofork() 4532ed72599Seric { 4542ed72599Seric register int pid; 4552ed72599Seric 4562ed72599Seric DOFORK(fork); 4572ed72599Seric return (pid); 4582ed72599Seric } 4592ed72599Seric /* 4605dfc646bSeric ** SENDOFF -- send off call to mailer & collect response. 4615dfc646bSeric ** 4625dfc646bSeric ** Parameters: 4635dfc646bSeric ** m -- mailer descriptor. 4645dfc646bSeric ** pvp -- parameter vector to send to it. 4656259796dSeric ** ctladdr -- an address pointer controlling the 4666259796dSeric ** user/groupid etc. of the mailer. 4675dfc646bSeric ** 4685dfc646bSeric ** Returns: 4695dfc646bSeric ** exit status of mailer. 4705dfc646bSeric ** 4715dfc646bSeric ** Side Effects: 4725dfc646bSeric ** none. 4735dfc646bSeric */ 4745dfc646bSeric 47551552439Seric sendoff(m, pvp, ctladdr) 4765dfc646bSeric struct mailer *m; 4775dfc646bSeric char **pvp; 4786259796dSeric ADDRESS *ctladdr; 4795dfc646bSeric { 480c579ef51Seric auto FILE *mfile; 481c579ef51Seric auto FILE *rfile; 4825dfc646bSeric register int i; 483c579ef51Seric int pid; 484c579ef51Seric 485c579ef51Seric /* 486c579ef51Seric ** Create connection to mailer. 487c579ef51Seric */ 488c579ef51Seric 489c579ef51Seric pid = openmailer(m, pvp, ctladdr, FALSE, &mfile, &rfile); 490c579ef51Seric if (pid < 0) 491c579ef51Seric return (-1); 492c579ef51Seric 493c579ef51Seric /* 494c579ef51Seric ** Format and send message. 495c579ef51Seric */ 496c579ef51Seric 497c579ef51Seric (void) signal(SIGPIPE, SIG_IGN); 49851552439Seric putfromline(mfile, m); 49951552439Seric (*CurEnv->e_puthdr)(mfile, m, CurEnv); 50051552439Seric fprintf(mfile, "\n"); 50151552439Seric (*CurEnv->e_putbody)(mfile, m, FALSE); 502c579ef51Seric (void) fclose(mfile); 503c579ef51Seric 504c579ef51Seric i = endmailer(pid, pvp[0]); 505c579ef51Seric giveresponse(i, TRUE, m); 506bc6e2962Seric 507bc6e2962Seric /* arrange a return receipt if requested */ 508*3bea8136Seric if (CurEnv->e_receiptto != NULL && bitset(M_LOCAL, m->m_flags)) 509bc6e2962Seric { 5107a941e7aSeric CurEnv->e_sendreceipt = TRUE; 511*3bea8136Seric if (ExitStat == EX_OK) 512*3bea8136Seric fprintf(Xscript, "%s... successfully delivered\n", 513*3bea8136Seric CurEnv->e_to); 514bc6e2962Seric /* do we want to send back more info? */ 515bc6e2962Seric } 516bc6e2962Seric 517c579ef51Seric return (i); 518c579ef51Seric } 519c579ef51Seric /* 520c579ef51Seric ** ENDMAILER -- Wait for mailer to terminate. 521c579ef51Seric ** 522c579ef51Seric ** We should never get fatal errors (e.g., segmentation 523c579ef51Seric ** violation), so we report those specially. For other 524c579ef51Seric ** errors, we choose a status message (into statmsg), 525c579ef51Seric ** and if it represents an error, we print it. 526c579ef51Seric ** 527c579ef51Seric ** Parameters: 528c579ef51Seric ** pid -- pid of mailer. 529c579ef51Seric ** name -- name of mailer (for error messages). 530c579ef51Seric ** 531c579ef51Seric ** Returns: 532c579ef51Seric ** exit code of mailer. 533c579ef51Seric ** 534c579ef51Seric ** Side Effects: 535c579ef51Seric ** none. 536c579ef51Seric */ 537c579ef51Seric 538c579ef51Seric endmailer(pid, name) 539c579ef51Seric int pid; 540c579ef51Seric char *name; 541c579ef51Seric { 542c579ef51Seric register int i; 543c579ef51Seric auto int st; 544c579ef51Seric 54533db8731Seric /* in the IPC case there is nothing to wait for */ 54633db8731Seric if (pid == 0) 54733db8731Seric return (EX_OK); 54833db8731Seric 54933db8731Seric /* wait for the mailer process to die and collect status */ 550c579ef51Seric while ((i = wait(&st)) > 0 && i != pid) 551c579ef51Seric continue; 552c579ef51Seric if (i < 0) 553c579ef51Seric { 554c579ef51Seric syserr("wait"); 555c579ef51Seric return (-1); 556c579ef51Seric } 55733db8731Seric 55833db8731Seric /* see if it died a horrid death */ 559c579ef51Seric if ((st & 0377) != 0) 560c579ef51Seric { 561c579ef51Seric syserr("%s: stat %o", name, st); 562c579ef51Seric ExitStat = EX_UNAVAILABLE; 563c579ef51Seric return (-1); 564c579ef51Seric } 56533db8731Seric 56633db8731Seric /* normal death -- return status */ 567c579ef51Seric i = (st >> 8) & 0377; 568c579ef51Seric return (i); 569c579ef51Seric } 570c579ef51Seric /* 571c579ef51Seric ** OPENMAILER -- open connection to mailer. 572c579ef51Seric ** 573c579ef51Seric ** Parameters: 574c579ef51Seric ** m -- mailer descriptor. 575c579ef51Seric ** pvp -- parameter vector to pass to mailer. 576c579ef51Seric ** ctladdr -- controlling address for user. 577c579ef51Seric ** clever -- create a full duplex connection. 578c579ef51Seric ** pmfile -- pointer to mfile (to mailer) connection. 579c579ef51Seric ** prfile -- pointer to rfile (from mailer) connection. 580c579ef51Seric ** 581c579ef51Seric ** Returns: 58233db8731Seric ** pid of mailer ( > 0 ). 583c579ef51Seric ** -1 on error. 58433db8731Seric ** zero on an IPC connection. 585c579ef51Seric ** 586c579ef51Seric ** Side Effects: 587c579ef51Seric ** creates a mailer in a subprocess. 588c579ef51Seric */ 589c579ef51Seric 590c579ef51Seric openmailer(m, pvp, ctladdr, clever, pmfile, prfile) 591c579ef51Seric struct mailer *m; 592c579ef51Seric char **pvp; 593c579ef51Seric ADDRESS *ctladdr; 594c579ef51Seric bool clever; 595c579ef51Seric FILE **pmfile; 596c579ef51Seric FILE **prfile; 597c579ef51Seric { 5985dfc646bSeric int pid; 599f8952a83Seric int mpvect[2]; 600c579ef51Seric int rpvect[2]; 6015dfc646bSeric FILE *mfile; 602c579ef51Seric FILE *rfile; 6035dfc646bSeric extern FILE *fdopen(); 6045dfc646bSeric 6055dfc646bSeric # ifdef DEBUG 6066ef48975Seric if (tTd(11, 1)) 6075dfc646bSeric { 608c579ef51Seric printf("openmailer:\n"); 6095dfc646bSeric printav(pvp); 6105dfc646bSeric } 6115dfc646bSeric # endif DEBUG 61235490626Seric errno = 0; 6135dfc646bSeric 61433db8731Seric # ifdef DAEMON 61533db8731Seric /* 61633db8731Seric ** Deal with the special case of mail handled through an IPC 61733db8731Seric ** connection. 61833db8731Seric ** In this case we don't actually fork. We must be 61933db8731Seric ** running SMTP for this to work. We will return a 62033db8731Seric ** zero pid to indicate that we are running IPC. 62133db8731Seric */ 62233db8731Seric 62333db8731Seric if (strcmp(m->m_mailer, "[IPC]") == 0) 62433db8731Seric { 62533db8731Seric register int i; 6261277f9a8Seric register u_short port; 62733db8731Seric 62833db8731Seric if (!clever) 62933db8731Seric syserr("non-clever IPC"); 63093b6e3cfSeric if (pvp[2] != NULL) 6311277f9a8Seric port = atoi(pvp[2]); 63293b6e3cfSeric else 6331277f9a8Seric port = 0; 6341277f9a8Seric i = makeconnection(pvp[1], port, pmfile, prfile); 63533db8731Seric if (i != EX_OK) 636ed854c7bSeric { 637ed854c7bSeric ExitStat = i; 63833db8731Seric return (-1); 639ed854c7bSeric } 64033db8731Seric else 64133db8731Seric return (0); 64233db8731Seric } 64333db8731Seric # endif DAEMON 64433db8731Seric 6456328bdf7Seric /* create a pipe to shove the mail through */ 646f8952a83Seric if (pipe(mpvect) < 0) 64725a99e2eSeric { 648c579ef51Seric syserr("pipe (to mailer)"); 64925a99e2eSeric return (-1); 65025a99e2eSeric } 651c579ef51Seric 6522c7e1b8dSeric # ifdef SMTP 653c579ef51Seric /* if this mailer speaks smtp, create a return pipe */ 654c579ef51Seric if (clever && pipe(rpvect) < 0) 655c579ef51Seric { 656c579ef51Seric syserr("pipe (from mailer)"); 657c579ef51Seric (void) close(mpvect[0]); 658c579ef51Seric (void) close(mpvect[1]); 659c579ef51Seric return (-1); 660c579ef51Seric } 6612c7e1b8dSeric # endif SMTP 662c579ef51Seric 66333db8731Seric /* 66433db8731Seric ** Actually fork the mailer process. 66533db8731Seric ** DOFORK is clever about retrying. 66633db8731Seric */ 66733db8731Seric 6686ef48975Seric (void) fflush(Xscript); /* for debugging */ 66932d19d43Seric DOFORK(XFORK); 670f129ec7dSeric /* pid is set by DOFORK */ 67125a99e2eSeric if (pid < 0) 67225a99e2eSeric { 67333db8731Seric /* failure */ 67425a99e2eSeric syserr("Cannot fork"); 675f8952a83Seric (void) close(mpvect[0]); 676f8952a83Seric (void) close(mpvect[1]); 677c579ef51Seric if (clever) 678c579ef51Seric { 679c579ef51Seric (void) close(rpvect[0]); 680c579ef51Seric (void) close(rpvect[1]); 681c579ef51Seric } 68225a99e2eSeric return (-1); 68325a99e2eSeric } 68425a99e2eSeric else if (pid == 0) 68525a99e2eSeric { 68625a99e2eSeric /* child -- set up input & exec mailer */ 68703ab8e55Seric /* make diagnostic output be standard output */ 6888f0e7860Seric (void) signal(SIGINT, SIG_IGN); 6898f0e7860Seric (void) signal(SIGHUP, SIG_IGN); 6900984da9fSeric (void) signal(SIGTERM, SIG_DFL); 691f8952a83Seric 692f8952a83Seric /* arrange to filter standard & diag output of command */ 693c579ef51Seric if (clever) 694c579ef51Seric { 695c579ef51Seric (void) close(rpvect[0]); 696c579ef51Seric (void) close(1); 697c579ef51Seric (void) dup(rpvect[1]); 698c579ef51Seric (void) close(rpvect[1]); 699c579ef51Seric } 700c579ef51Seric else if (OutChannel != stdout) 701f8952a83Seric { 702f8952a83Seric (void) close(1); 703f8952a83Seric (void) dup(fileno(OutChannel)); 704f8952a83Seric } 705db8841e9Seric (void) close(2); 706db8841e9Seric (void) dup(1); 707f8952a83Seric 708f8952a83Seric /* arrange to get standard input */ 709f8952a83Seric (void) close(mpvect[1]); 710db8841e9Seric (void) close(0); 711f8952a83Seric if (dup(mpvect[0]) < 0) 71225a99e2eSeric { 71325a99e2eSeric syserr("Cannot dup to zero!"); 714a590b978Seric _exit(EX_OSERR); 71525a99e2eSeric } 716f8952a83Seric (void) close(mpvect[0]); 7172a6e0786Seric if (!bitset(M_RESTR, m->m_flags)) 7180984da9fSeric { 719e36b99e2Seric if (ctladdr->q_uid == 0) 720e36b99e2Seric { 721e36b99e2Seric (void) setgid(DefGid); 722e36b99e2Seric (void) setuid(DefUid); 723e36b99e2Seric } 724e36b99e2Seric else 72569f29479Seric { 726e36b99e2Seric (void) setgid(ctladdr->q_gid); 727e36b99e2Seric (void) setuid(ctladdr->q_uid); 72869f29479Seric } 7290984da9fSeric } 730e374fd72Seric # ifndef VFORK 731e374fd72Seric /* 732e374fd72Seric ** We have to be careful with vfork - we can't mung up the 733e374fd72Seric ** memory but we don't want the mailer to inherit any extra 734e374fd72Seric ** open files. Chances are the mailer won't 735e374fd72Seric ** care about an extra file, but then again you never know. 736e374fd72Seric ** Actually, we would like to close(fileno(pwf)), but it's 737e374fd72Seric ** declared static so we can't. But if we fclose(pwf), which 738e374fd72Seric ** is what endpwent does, it closes it in the parent too and 739e374fd72Seric ** the next getpwnam will be slower. If you have a weird 740e374fd72Seric ** mailer that chokes on the extra file you should do the 741e374fd72Seric ** endpwent(). 742e374fd72Seric ** 743e374fd72Seric ** Similar comments apply to log. However, openlog is 744e374fd72Seric ** clever enough to set the FIOCLEX mode on the file, 745e374fd72Seric ** so it will be closed automatically on the exec. 746e374fd72Seric */ 747e374fd72Seric 748e374fd72Seric endpwent(); 74925a99e2eSeric # ifdef LOG 750f9fe028fSeric closelog(); 75125a99e2eSeric # endif LOG 752e374fd72Seric # endif VFORK 75333db8731Seric 75433db8731Seric /* try to execute the mailer */ 75525a99e2eSeric execv(m->m_mailer, pvp); 75633db8731Seric 75725a99e2eSeric /* syserr fails because log is closed */ 75825a99e2eSeric /* syserr("Cannot exec %s", m->m_mailer); */ 75932d19d43Seric printf("Cannot exec '%s' errno=%d\n", m->m_mailer, errno); 760db8841e9Seric (void) fflush(stdout); 761a590b978Seric _exit(EX_UNAVAILABLE); 76225a99e2eSeric } 76325a99e2eSeric 764f8952a83Seric /* 765c579ef51Seric ** Set up return value. 766f8952a83Seric */ 767f8952a83Seric 768f8952a83Seric (void) close(mpvect[0]); 769f8952a83Seric mfile = fdopen(mpvect[1], "w"); 770c579ef51Seric if (clever) 77125a99e2eSeric { 772c579ef51Seric (void) close(rpvect[1]); 773c579ef51Seric rfile = fdopen(rpvect[0], "r"); 77425a99e2eSeric } 775c579ef51Seric 776c579ef51Seric *pmfile = mfile; 777c579ef51Seric *prfile = rfile; 778c579ef51Seric 779c579ef51Seric return (pid); 78025a99e2eSeric } 78125a99e2eSeric /* 78225a99e2eSeric ** GIVERESPONSE -- Interpret an error response from a mailer 78325a99e2eSeric ** 78425a99e2eSeric ** Parameters: 78525a99e2eSeric ** stat -- the status code from the mailer (high byte 78625a99e2eSeric ** only; core dumps must have been taken care of 78725a99e2eSeric ** already). 78825a99e2eSeric ** force -- if set, force an error message output, even 78925a99e2eSeric ** if the mailer seems to like to print its own 79025a99e2eSeric ** messages. 79125a99e2eSeric ** m -- the mailer descriptor for this mailer. 79225a99e2eSeric ** 79325a99e2eSeric ** Returns: 794db8841e9Seric ** none. 79525a99e2eSeric ** 79625a99e2eSeric ** Side Effects: 797c1f9df2cSeric ** Errors may be incremented. 79825a99e2eSeric ** ExitStat may be set. 79925a99e2eSeric */ 80025a99e2eSeric 80125a99e2eSeric giveresponse(stat, force, m) 80225a99e2eSeric int stat; 8034a3f06b2Seric bool force; 80425a99e2eSeric register struct mailer *m; 80525a99e2eSeric { 80625a99e2eSeric register char *statmsg; 80725a99e2eSeric extern char *SysExMsg[]; 80825a99e2eSeric register int i; 80925a99e2eSeric extern int N_SysEx; 81029dd97a3Seric char buf[30]; 81125a99e2eSeric 81213bbc08cSeric /* 81313bbc08cSeric ** Compute status message from code. 81413bbc08cSeric */ 81513bbc08cSeric 81625a99e2eSeric i = stat - EX__BASE; 81725a99e2eSeric if (i < 0 || i > N_SysEx) 81825a99e2eSeric statmsg = NULL; 81925a99e2eSeric else 82025a99e2eSeric statmsg = SysExMsg[i]; 82125a99e2eSeric if (stat == 0) 822c38ba59cSeric { 8235826d9d3Seric statmsg = "250 sent"; 8245826d9d3Seric message(Arpa_Info, &statmsg[4]); 825c38ba59cSeric } 826c77d1c25Seric else if (stat == EX_TEMPFAIL) 827c77d1c25Seric { 8280d4209fdSeric message(Arpa_Info, "deferred"); 829c77d1c25Seric } 83025a99e2eSeric else 83125a99e2eSeric { 832c1f9df2cSeric Errors++; 833ed854c7bSeric FatalErrors = TRUE; 83425a99e2eSeric if (statmsg == NULL && m->m_badstat != 0) 83525a99e2eSeric { 83625a99e2eSeric stat = m->m_badstat; 83725a99e2eSeric i = stat - EX__BASE; 83825a99e2eSeric # ifdef DEBUG 83925a99e2eSeric if (i < 0 || i >= N_SysEx) 84025a99e2eSeric syserr("Bad m_badstat %d", stat); 84125a99e2eSeric else 84225a99e2eSeric # endif DEBUG 84325a99e2eSeric statmsg = SysExMsg[i]; 84425a99e2eSeric } 84525a99e2eSeric if (statmsg == NULL) 84625a99e2eSeric usrerr("unknown mailer response %d", stat); 847c38ba59cSeric else if (force || !bitset(M_QUIET, m->m_flags) || Verbose) 8485826d9d3Seric usrerr(statmsg); 849793d9f34Seric else 8505826d9d3Seric fprintf(Xscript, "%s\n", &statmsg[4]); 85125a99e2eSeric } 85225a99e2eSeric 85325a99e2eSeric /* 85425a99e2eSeric ** Final cleanup. 85525a99e2eSeric ** Log a record of the transaction. Compute the new 85625a99e2eSeric ** ExitStat -- if we already had an error, stick with 85725a99e2eSeric ** that. 85825a99e2eSeric */ 85925a99e2eSeric 86025a99e2eSeric if (statmsg == NULL) 86129dd97a3Seric { 8625826d9d3Seric (void) sprintf(buf, "554 error %d", stat); 86329dd97a3Seric statmsg = buf; 86429dd97a3Seric } 86529dd97a3Seric 86629dd97a3Seric # ifdef LOG 86761f5a1d4Seric if (LogLevel > ((stat == 0 || stat == EX_TEMPFAIL) ? 3 : 2)) 8685cf56be3Seric { 8695cf56be3Seric extern char *pintvl(); 8705cf56be3Seric 8715cf56be3Seric syslog(LOG_INFO, "%s: to=%s, delay=%s, stat=%s", CurEnv->e_id, 872b20f17b5Seric CurEnv->e_to, pintvl(curtime() - CurEnv->e_ctime, TRUE), 8735826d9d3Seric &statmsg[4]); 8745cf56be3Seric } 87525a99e2eSeric # endif LOG 876c77d1c25Seric if (stat != EX_TEMPFAIL) 877243921eeSeric setstat(stat); 87825a99e2eSeric } 87925a99e2eSeric /* 88051552439Seric ** PUTFROMLINE -- output a UNIX-style from line (or whatever) 88125a99e2eSeric ** 88251552439Seric ** This can be made an arbitrary message separator by changing $l 88351552439Seric ** 88451552439Seric ** One of the ugliest hacks seen by human eyes is 88551552439Seric ** contained herein: UUCP wants those stupid 88651552439Seric ** "remote from <host>" lines. Why oh why does a 88751552439Seric ** well-meaning programmer such as myself have to 88851552439Seric ** deal with this kind of antique garbage???? 88925a99e2eSeric ** 89025a99e2eSeric ** Parameters: 89151552439Seric ** fp -- the file to output to. 89251552439Seric ** m -- the mailer describing this entry. 89325a99e2eSeric ** 89425a99e2eSeric ** Returns: 89551552439Seric ** none 89625a99e2eSeric ** 89725a99e2eSeric ** Side Effects: 89851552439Seric ** outputs some text to fp. 89925a99e2eSeric */ 90025a99e2eSeric 90151552439Seric putfromline(fp, m) 90251552439Seric register FILE *fp; 90351552439Seric register MAILER *m; 90425a99e2eSeric { 90551552439Seric char buf[MAXLINE]; 90625a99e2eSeric 90751552439Seric if (bitset(M_NHDR, m->m_flags)) 90851552439Seric return; 90913bbc08cSeric 9102c7e1b8dSeric # ifdef UGLYUUCP 911a49f24c0Seric if (bitset(M_UGLYUUCP, m->m_flags)) 91274b6e67bSeric { 91374b6e67bSeric extern char *macvalue(); 91474b6e67bSeric char *sys = macvalue('g'); 91574b6e67bSeric char *bang = index(sys, '!'); 91674b6e67bSeric 91774b6e67bSeric if (bang == NULL) 91874b6e67bSeric syserr("No ! in UUCP! (%s)", sys); 91974b6e67bSeric else 92074b6e67bSeric *bang = '\0'; 921518ad6b6Seric expand("From $f $d remote from $g\n", buf, 92251552439Seric &buf[sizeof buf - 1], CurEnv); 92374b6e67bSeric *bang = '!'; 92474b6e67bSeric } 925a36e30c9Seric else 9262c7e1b8dSeric # endif UGLYUUCP 92751552439Seric expand("$l\n", buf, &buf[sizeof buf - 1], CurEnv); 928d90b8d00Seric putline(buf, fp, bitset(M_FULLSMTP, m->m_flags)); 929bc6e2962Seric } 930bc6e2962Seric /* 93151552439Seric ** PUTHEADER -- put the header part of a message from the in-core copy 932bc6e2962Seric ** 933bc6e2962Seric ** Parameters: 934bc6e2962Seric ** fp -- file to put it on. 935bc6e2962Seric ** m -- mailer to use. 93651552439Seric ** e -- envelope to use. 937bc6e2962Seric ** 938bc6e2962Seric ** Returns: 939bc6e2962Seric ** none. 940bc6e2962Seric ** 941bc6e2962Seric ** Side Effects: 942bc6e2962Seric ** none. 943bc6e2962Seric */ 944bc6e2962Seric 94551552439Seric putheader(fp, m, e) 946bc6e2962Seric register FILE *fp; 947bc6e2962Seric register struct mailer *m; 94851552439Seric register ENVELOPE *e; 949bc6e2962Seric { 950bc6e2962Seric char buf[BUFSIZ]; 951bc6e2962Seric register HDR *h; 952bc6e2962Seric extern char *arpadate(); 953bc6e2962Seric extern char *capitalize(); 954bc6e2962Seric extern char *hvalue(); 955bc6e2962Seric extern bool samefrom(); 956d90b8d00Seric char obuf[MAXLINE]; 957d90b8d00Seric register char *obp; 958d90b8d00Seric bool fullsmtp = bitset(M_FULLSMTP, m->m_flags); 959bc6e2962Seric 96051552439Seric for (h = e->e_header; h != NULL; h = h->h_link) 9616328bdf7Seric { 96213bbc08cSeric register char *p; 96313bbc08cSeric 9649e9163a0Seric if (bitset(H_CHECK|H_ACHECK, h->h_flags) && !bitset(h->h_mflags, m->m_flags)) 965*3bea8136Seric continue; 966894de7daSeric 9678a66d3edSeric p = h->h_value; 968*3bea8136Seric if (bitset(H_DEFAULT, h->h_flags)) 9694ae18d0eSeric { 970b8a19582Seric /* macro expand value if generated internally */ 971*3bea8136Seric expand(p, buf, &buf[sizeof buf], e); 9724ae18d0eSeric p = buf; 9734ae18d0eSeric } 9748a66d3edSeric if (p == NULL || *p == '\0') 9758a66d3edSeric continue; 9768a66d3edSeric 977*3bea8136Seric if (bitset(H_FROM|H_RCPT, h->h_flags)) 9788a66d3edSeric { 979*3bea8136Seric /* address field */ 980*3bea8136Seric commaize(h, p, fp, e->e_oldstyle, m); 9818a66d3edSeric } 982*3bea8136Seric else 9838a66d3edSeric { 984*3bea8136Seric /* vanilla header line */ 9858a66d3edSeric (void) sprintf(obuf, "%s: %s\n", capitalize(h->h_field), p); 9868a66d3edSeric putline(obuf, fp, fullsmtp); 9878a66d3edSeric } 988*3bea8136Seric h->h_flags |= H_USED; 9898a66d3edSeric } 9908a66d3edSeric } 9918a66d3edSeric /* 9928a66d3edSeric ** COMMAIZE -- output a header field, making a comma-translated list. 9938a66d3edSeric ** 9948a66d3edSeric ** Parameters: 995*3bea8136Seric ** h -- the header field to output. 996*3bea8136Seric ** p -- the value to put in it. 9978a66d3edSeric ** fp -- file to put it to. 9988a66d3edSeric ** oldstyle -- TRUE if this is an old style header. 9998a66d3edSeric ** m -- a pointer to the mailer descriptor. 10008a66d3edSeric ** 10018a66d3edSeric ** Returns: 10028a66d3edSeric ** none. 10038a66d3edSeric ** 10048a66d3edSeric ** Side Effects: 10058a66d3edSeric ** outputs "p" to file "fp". 10068a66d3edSeric */ 10078a66d3edSeric 1008*3bea8136Seric commaize(h, p, fp, oldstyle, m) 1009*3bea8136Seric register HDR *h; 10108a66d3edSeric register char *p; 10118a66d3edSeric FILE *fp; 10128a66d3edSeric bool oldstyle; 1013*3bea8136Seric register MAILER *m; 10148a66d3edSeric { 1015*3bea8136Seric register char *obp; 1016*3bea8136Seric int opos; 1017*3bea8136Seric bool fullsmtp = bitset(M_FULLSMTP, m->m_flags); 10188c2bf25bSeric bool firstone = TRUE; 10198a66d3edSeric char obuf[MAXLINE]; 10208c2bf25bSeric 10218c2bf25bSeric /* 10228c2bf25bSeric ** Output the address list translated by the 10238c2bf25bSeric ** mailer and with commas. 10248c2bf25bSeric */ 10258c2bf25bSeric 10268a66d3edSeric # ifdef DEBUG 10278a66d3edSeric if (tTd(14, 2)) 1028*3bea8136Seric printf("commaize(%s: %s)\n", h->h_field, p); 10298a66d3edSeric # endif DEBUG 10308a66d3edSeric 1031d90b8d00Seric obp = obuf; 1032*3bea8136Seric (void) sprintf(obp, "%s: ", capitalize(h->h_field)); 1033*3bea8136Seric opos = strlen(h->h_field) + 2; 1034d90b8d00Seric obp += opos; 1035b8a19582Seric 1036b8a19582Seric /* 1037b8a19582Seric ** Run through the list of values. 1038b8a19582Seric */ 1039b8a19582Seric 10408c2bf25bSeric while (*p != '\0') 10418c2bf25bSeric { 1042b8a19582Seric register char *name; 10438c2bf25bSeric char savechar; 1044003a5a37Seric int commentlevel; 1045003a5a37Seric bool inquote; 1046*3bea8136Seric extern char *remotename(); 10478c2bf25bSeric 1048b8a19582Seric /* 1049b8a19582Seric ** Find the end of the name. New style names 1050b8a19582Seric ** end with a comma, old style names end with 1051b8a19582Seric ** a space character. However, spaces do not 1052b8a19582Seric ** necessarily delimit an old-style name -- at 1053b8a19582Seric ** signs mean keep going. 1054b8a19582Seric */ 1055b8a19582Seric 1056b8a19582Seric /* clean up the leading trash in source */ 1057b8a19582Seric while (*p != '\0' && (isspace(*p) || *p == ',')) 1058b8a19582Seric p++; 1059b8a19582Seric name = p; 1060b8a19582Seric 1061b8a19582Seric /* find end of name */ 1062003a5a37Seric commentlevel = 0; 1063003a5a37Seric inquote = FALSE; 1064003a5a37Seric while (*p != '\0' && (*p != ',' || commentlevel > 0 || inquote)) 1065bc28c57aSeric { 1066bc28c57aSeric extern bool isatword(); 1067bc28c57aSeric char *oldp; 1068bc28c57aSeric 1069003a5a37Seric if (*p == '(') 1070003a5a37Seric commentlevel++; 1071003a5a37Seric else if (*p == ')' && commentlevel > 0) 1072003a5a37Seric commentlevel--; 1073003a5a37Seric else if (*p == '"') 1074003a5a37Seric inquote = !inquote; 10758a66d3edSeric if (!oldstyle || !isspace(*p)) 1076bc28c57aSeric { 10778c2bf25bSeric p++; 1078bc28c57aSeric continue; 1079bc28c57aSeric } 1080b8a19582Seric 1081b8a19582Seric /* look to see if we have an at sign */ 1082bc28c57aSeric oldp = p; 1083bc28c57aSeric while (*p != '\0' && isspace(*p)) 1084bc28c57aSeric p++; 1085b8a19582Seric 1086bc28c57aSeric if (*p != '@' && !isatword(p)) 1087bc28c57aSeric { 1088bc28c57aSeric p = oldp; 1089bc28c57aSeric break; 1090bc28c57aSeric } 1091bc28c57aSeric p += *p == '@' ? 1 : 2; 1092bc28c57aSeric while (*p != '\0' && isspace(*p)) 1093bc28c57aSeric p++; 1094bc28c57aSeric } 1095b8a19582Seric /* at the end of one complete name */ 1096b8a19582Seric 1097b8a19582Seric /* strip off trailing white space */ 10988a66d3edSeric while (p >= name && (isspace(*p) || *p == ',' || *p == '\0')) 1099b8a19582Seric p--; 1100b8a19582Seric if (++p == name) 1101b8a19582Seric continue; 11028c2bf25bSeric savechar = *p; 11038c2bf25bSeric *p = '\0'; 11048c2bf25bSeric 11058c2bf25bSeric /* translate the name to be relative */ 1106*3bea8136Seric name = remotename(name, m, bitset(H_FROM, h->h_flags)); 11078c2bf25bSeric if (*name == '\0') 1108b8a19582Seric { 1109b8a19582Seric *p = savechar; 11108c2bf25bSeric continue; 1111b8a19582Seric } 11128c2bf25bSeric 11138c2bf25bSeric /* output the name with nice formatting */ 11148c2bf25bSeric opos += strlen(name); 11158c2bf25bSeric if (!firstone) 11168c2bf25bSeric opos += 2; 11178c2bf25bSeric if (opos > 78 && !firstone) 11188c2bf25bSeric { 1119d90b8d00Seric (void) sprintf(obp, ",\n"); 1120d90b8d00Seric putline(obuf, fp, fullsmtp); 1121d90b8d00Seric obp = obuf; 1122d90b8d00Seric (void) sprintf(obp, " "); 1123d90b8d00Seric obp += strlen(obp); 1124bc213ac6Seric opos = 8 + strlen(name); 11258c2bf25bSeric } 11268c2bf25bSeric else if (!firstone) 1127d90b8d00Seric { 1128d90b8d00Seric (void) sprintf(obp, ", "); 1129d90b8d00Seric obp += 2; 1130d90b8d00Seric } 1131d90b8d00Seric (void) sprintf(obp, "%s", name); 1132d90b8d00Seric obp += strlen(obp); 11338c2bf25bSeric firstone = FALSE; 11348c2bf25bSeric *p = savechar; 11358c2bf25bSeric } 11361277f9a8Seric (void) strcpy(obp, "\n"); 1137573fa002Seric putline(obuf, fp, fullsmtp); 113851552439Seric } 113951552439Seric /* 114051552439Seric ** PUTBODY -- put the body of a message. 114151552439Seric ** 114251552439Seric ** Parameters: 114351552439Seric ** fp -- file to output onto. 114451552439Seric ** m -- a mailer descriptor. 114551552439Seric ** xdot -- if set, use SMTP hidden dot algorithm. 114651552439Seric ** 114751552439Seric ** Returns: 114851552439Seric ** none. 114951552439Seric ** 115051552439Seric ** Side Effects: 115151552439Seric ** The message is written onto fp. 115251552439Seric */ 115351552439Seric 115451552439Seric putbody(fp, m, xdot) 115551552439Seric FILE *fp; 115651552439Seric struct mailer *m; 115751552439Seric bool xdot; 115851552439Seric { 115951552439Seric char buf[MAXLINE + 1]; 1160d90b8d00Seric bool fullsmtp = bitset(M_FULLSMTP, m->m_flags); 116151552439Seric 116251552439Seric /* 116351552439Seric ** Output the body of the message 116451552439Seric */ 116551552439Seric 11665e663df1Seric #ifdef lint 11675e663df1Seric /* m will be needed later for complete smtp emulation */ 11685e663df1Seric if (m == NULL) 11695e663df1Seric return; 11705e663df1Seric #endif lint 11715e663df1Seric 117251552439Seric if (TempFile != NULL) 117351552439Seric { 117451552439Seric rewind(TempFile); 117551552439Seric buf[0] = '.'; 117651552439Seric while (!ferror(fp) && fgets(&buf[1], sizeof buf - 1, TempFile) != NULL) 1177d90b8d00Seric putline((xdot && buf[1] == '.') ? buf : &buf[1], fp, fullsmtp); 117851552439Seric 117951552439Seric if (ferror(TempFile)) 118051552439Seric { 118151552439Seric syserr("putbody: read error"); 118251552439Seric ExitStat = EX_IOERR; 118351552439Seric } 118451552439Seric } 118551552439Seric 118651552439Seric (void) fflush(fp); 118751552439Seric if (ferror(fp) && errno != EPIPE) 118851552439Seric { 118951552439Seric syserr("putbody: write error"); 119051552439Seric ExitStat = EX_IOERR; 119151552439Seric } 119251552439Seric errno = 0; 119325a99e2eSeric } 119425a99e2eSeric /* 1195bc28c57aSeric ** ISATWORD -- tell if the word we are pointing to is "at". 1196bc28c57aSeric ** 1197bc28c57aSeric ** Parameters: 1198bc28c57aSeric ** p -- word to check. 1199bc28c57aSeric ** 1200bc28c57aSeric ** Returns: 1201bc28c57aSeric ** TRUE -- if p is the word at. 1202bc28c57aSeric ** FALSE -- otherwise. 1203bc28c57aSeric ** 1204bc28c57aSeric ** Side Effects: 1205bc28c57aSeric ** none. 1206bc28c57aSeric */ 1207bc28c57aSeric 1208bc28c57aSeric bool 1209bc28c57aSeric isatword(p) 1210bc28c57aSeric register char *p; 1211bc28c57aSeric { 1212bc28c57aSeric extern char lower(); 1213bc28c57aSeric 1214bc28c57aSeric if (lower(p[0]) == 'a' && lower(p[1]) == 't' && 1215bc28c57aSeric p[2] != '\0' && isspace(p[2])) 1216bc28c57aSeric return (TRUE); 1217bc28c57aSeric return (FALSE); 1218bc28c57aSeric } 1219bc28c57aSeric /* 122087bd9a02Seric ** SAMEFROM -- tell if two text addresses represent the same from address. 122187bd9a02Seric ** 122287bd9a02Seric ** Parameters: 122387bd9a02Seric ** ifrom -- internally generated form of from address. 122487bd9a02Seric ** efrom -- external form of from address. 122587bd9a02Seric ** 122687bd9a02Seric ** Returns: 122787bd9a02Seric ** TRUE -- if they convey the same info. 122887bd9a02Seric ** FALSE -- if any information has been lost. 122987bd9a02Seric ** 123087bd9a02Seric ** Side Effects: 123187bd9a02Seric ** none. 123287bd9a02Seric */ 123387bd9a02Seric 123487bd9a02Seric bool 123587bd9a02Seric samefrom(ifrom, efrom) 123687bd9a02Seric char *ifrom; 123787bd9a02Seric char *efrom; 123887bd9a02Seric { 1239894de7daSeric register char *p; 1240894de7daSeric char buf[MAXNAME + 4]; 1241894de7daSeric 1242894de7daSeric # ifdef DEBUG 12436ef48975Seric if (tTd(3, 8)) 1244894de7daSeric printf("samefrom(%s,%s)-->", ifrom, efrom); 1245894de7daSeric # endif DEBUG 1246894de7daSeric if (strcmp(ifrom, efrom) == 0) 1247894de7daSeric goto success; 1248894de7daSeric p = index(ifrom, '@'); 1249894de7daSeric if (p == NULL) 1250894de7daSeric goto failure; 1251894de7daSeric *p = '\0'; 12525e663df1Seric (void) strcpy(buf, ifrom); 12535e663df1Seric (void) strcat(buf, " at "); 1254894de7daSeric *p++ = '@'; 12555e663df1Seric (void) strcat(buf, p); 1256894de7daSeric if (strcmp(buf, efrom) == 0) 1257894de7daSeric goto success; 1258894de7daSeric 1259894de7daSeric failure: 1260894de7daSeric # ifdef DEBUG 12616ef48975Seric if (tTd(3, 8)) 1262894de7daSeric printf("FALSE\n"); 1263894de7daSeric # endif DEBUG 1264894de7daSeric return (FALSE); 1265894de7daSeric 1266894de7daSeric success: 1267894de7daSeric # ifdef DEBUG 12686ef48975Seric if (tTd(3, 8)) 1269894de7daSeric printf("TRUE\n"); 1270894de7daSeric # endif DEBUG 1271894de7daSeric return (TRUE); 127287bd9a02Seric } 127387bd9a02Seric /* 127425a99e2eSeric ** MAILFILE -- Send a message to a file. 127525a99e2eSeric ** 1276f129ec7dSeric ** If the file has the setuid/setgid bits set, but NO execute 1277f129ec7dSeric ** bits, sendmail will try to become the owner of that file 1278f129ec7dSeric ** rather than the real user. Obviously, this only works if 1279f129ec7dSeric ** sendmail runs as root. 1280f129ec7dSeric ** 128125a99e2eSeric ** Parameters: 128225a99e2eSeric ** filename -- the name of the file to send to. 12836259796dSeric ** ctladdr -- the controlling address header -- includes 12846259796dSeric ** the userid/groupid to be when sending. 128525a99e2eSeric ** 128625a99e2eSeric ** Returns: 128725a99e2eSeric ** The exit code associated with the operation. 128825a99e2eSeric ** 128925a99e2eSeric ** Side Effects: 129025a99e2eSeric ** none. 129125a99e2eSeric */ 129225a99e2eSeric 12936259796dSeric mailfile(filename, ctladdr) 129425a99e2eSeric char *filename; 12956259796dSeric ADDRESS *ctladdr; 129625a99e2eSeric { 129725a99e2eSeric register FILE *f; 129832d19d43Seric register int pid; 129925a99e2eSeric 130032d19d43Seric /* 130132d19d43Seric ** Fork so we can change permissions here. 130232d19d43Seric ** Note that we MUST use fork, not vfork, because of 130332d19d43Seric ** the complications of calling subroutines, etc. 130432d19d43Seric */ 130532d19d43Seric 130632d19d43Seric DOFORK(fork); 130732d19d43Seric 130832d19d43Seric if (pid < 0) 130932d19d43Seric return (EX_OSERR); 131032d19d43Seric else if (pid == 0) 131132d19d43Seric { 131232d19d43Seric /* child -- actually write to file */ 1313f129ec7dSeric struct stat stb; 1314f129ec7dSeric 13150984da9fSeric (void) signal(SIGINT, SIG_DFL); 13160984da9fSeric (void) signal(SIGHUP, SIG_DFL); 13170984da9fSeric (void) signal(SIGTERM, SIG_DFL); 1318f129ec7dSeric umask(OldUmask); 1319f129ec7dSeric if (stat(filename, &stb) < 0) 1320e6e1265fSeric stb.st_mode = 0666; 1321f129ec7dSeric if (bitset(0111, stb.st_mode)) 1322f129ec7dSeric exit(EX_CANTCREAT); 132303827b5fSeric if (ctladdr == NULL) 13247a941e7aSeric ctladdr = &CurEnv->e_from; 1325f129ec7dSeric if (!bitset(S_ISGID, stb.st_mode) || setgid(stb.st_gid) < 0) 1326e36b99e2Seric { 1327e36b99e2Seric if (ctladdr->q_uid == 0) 1328e36b99e2Seric (void) setgid(DefGid); 1329e36b99e2Seric else 13306259796dSeric (void) setgid(ctladdr->q_gid); 1331e36b99e2Seric } 1332f129ec7dSeric if (!bitset(S_ISUID, stb.st_mode) || setuid(stb.st_uid) < 0) 1333e36b99e2Seric { 1334e36b99e2Seric if (ctladdr->q_uid == 0) 1335e36b99e2Seric (void) setuid(DefUid); 1336e36b99e2Seric else 13376259796dSeric (void) setuid(ctladdr->q_uid); 1338e36b99e2Seric } 133927628d59Seric f = dfopen(filename, "a"); 134025a99e2eSeric if (f == NULL) 134132d19d43Seric exit(EX_CANTCREAT); 134225a99e2eSeric 134351552439Seric putfromline(f, Mailer[1]); 134451552439Seric (*CurEnv->e_puthdr)(f, Mailer[1], CurEnv); 1345d90b8d00Seric fputs("\n", f); 134651552439Seric (*CurEnv->e_putbody)(f, Mailer[1], FALSE); 134725a99e2eSeric fputs("\n", f); 1348db8841e9Seric (void) fclose(f); 134932d19d43Seric (void) fflush(stdout); 1350e36b99e2Seric 135127628d59Seric /* reset ISUID & ISGID bits for paranoid systems */ 1352c77d1c25Seric (void) chmod(filename, (int) stb.st_mode); 135332d19d43Seric exit(EX_OK); 135413bbc08cSeric /*NOTREACHED*/ 135532d19d43Seric } 135632d19d43Seric else 135732d19d43Seric { 135832d19d43Seric /* parent -- wait for exit status */ 135932d19d43Seric register int i; 136032d19d43Seric auto int stat; 136132d19d43Seric 136232d19d43Seric while ((i = wait(&stat)) != pid) 136332d19d43Seric { 136432d19d43Seric if (i < 0) 136532d19d43Seric { 136632d19d43Seric stat = EX_OSERR << 8; 136732d19d43Seric break; 136832d19d43Seric } 136932d19d43Seric } 13700984da9fSeric if ((stat & 0377) != 0) 13710984da9fSeric stat = EX_UNAVAILABLE << 8; 137232d19d43Seric return ((stat >> 8) & 0377); 137332d19d43Seric } 137425a99e2eSeric } 1375ea4dc939Seric /* 1376ea4dc939Seric ** SENDALL -- actually send all the messages. 1377ea4dc939Seric ** 1378ea4dc939Seric ** Parameters: 13790c52a0b3Seric ** e -- the envelope to send. 1380ea4dc939Seric ** verifyonly -- if set, only give verification messages. 1381ea4dc939Seric ** 1382ea4dc939Seric ** Returns: 1383ea4dc939Seric ** none. 1384ea4dc939Seric ** 1385ea4dc939Seric ** Side Effects: 1386ea4dc939Seric ** Scans the send lists and sends everything it finds. 13870c52a0b3Seric ** Delivers any appropriate error messages. 1388ea4dc939Seric */ 1389ea4dc939Seric 13900c52a0b3Seric sendall(e, verifyonly) 13910c52a0b3Seric ENVELOPE *e; 1392ea4dc939Seric bool verifyonly; 1393ea4dc939Seric { 1394e77e673fSeric register ADDRESS *q; 139514a8ed7aSeric bool oldverbose; 1396ea4dc939Seric 1397772e6e50Seric # ifdef DEBUG 13986ef48975Seric if (tTd(13, 2)) 1399772e6e50Seric { 1400772e6e50Seric printf("\nSend Queue:\n"); 14010c52a0b3Seric printaddr(e->e_sendqueue, TRUE); 1402772e6e50Seric } 1403772e6e50Seric # endif DEBUG 1404ea4dc939Seric 14050c52a0b3Seric /* 14060c52a0b3Seric ** Run through the list and send everything. 14070c52a0b3Seric */ 14080c52a0b3Seric 140914a8ed7aSeric oldverbose = Verbose; 141014a8ed7aSeric if (verifyonly) 141114a8ed7aSeric Verbose = TRUE; 14120c52a0b3Seric for (q = e->e_sendqueue; q != NULL; q = q->q_next) 1413ea4dc939Seric { 1414ea4dc939Seric if (verifyonly) 1415ea4dc939Seric { 14167a941e7aSeric CurEnv->e_to = q->q_paddr; 1417e77e673fSeric if (!bitset(QDONTSEND|QBADADDR, q->q_flags)) 1418ea4dc939Seric message(Arpa_Info, "deliverable"); 1419ea4dc939Seric } 1420ea4dc939Seric else 142151552439Seric (void) deliver(q); 1422ea4dc939Seric } 142314a8ed7aSeric Verbose = oldverbose; 14240c52a0b3Seric 14250c52a0b3Seric /* 14260c52a0b3Seric ** Now run through and check for errors. 14270c52a0b3Seric */ 14280c52a0b3Seric 14290c52a0b3Seric if (verifyonly) 14300c52a0b3Seric return; 14310c52a0b3Seric 14320c52a0b3Seric for (q = e->e_sendqueue; q != NULL; q = q->q_next) 14330c52a0b3Seric { 14340c52a0b3Seric register ADDRESS *qq; 14350c52a0b3Seric 14360c52a0b3Seric if (bitset(QQUEUEUP, q->q_flags)) 14370c52a0b3Seric e->e_queueup = TRUE; 14380c52a0b3Seric if (!bitset(QBADADDR, q->q_flags)) 14390c52a0b3Seric continue; 14400c52a0b3Seric 14410c52a0b3Seric /* we have an address that failed -- find the parent */ 14420c52a0b3Seric for (qq = q; qq != NULL; qq = qq->q_alias) 14430c52a0b3Seric { 14440c52a0b3Seric char obuf[MAXNAME + 6]; 14450c52a0b3Seric extern char *aliaslookup(); 14460c52a0b3Seric 14470c52a0b3Seric /* we can only have owners for local addresses */ 14480c52a0b3Seric if (!bitset(M_LOCAL, qq->q_mailer->m_flags)) 14490c52a0b3Seric continue; 14500c52a0b3Seric 14510c52a0b3Seric /* see if the owner list exists */ 14520c52a0b3Seric (void) strcpy(obuf, "owner-"); 1453cec031e3Seric if (strncmp(qq->q_user, "owner-", 6) == 0) 1454cec031e3Seric (void) strcat(obuf, "owner"); 1455cec031e3Seric else 14560c52a0b3Seric (void) strcat(obuf, qq->q_user); 14570c52a0b3Seric if (aliaslookup(obuf) == NULL) 14580c52a0b3Seric continue; 14590c52a0b3Seric 14600c52a0b3Seric /* owner list exists -- add it to the error queue */ 14610c52a0b3Seric qq->q_flags &= ~QPRIMARY; 14620c52a0b3Seric sendto(obuf, 1, qq, &e->e_errorqueue); 14630c52a0b3Seric MailBack = TRUE; 14640c52a0b3Seric break; 14650c52a0b3Seric } 14660c52a0b3Seric 14670c52a0b3Seric /* if we did not find an owner, send to the sender */ 14680c52a0b3Seric if (qq == NULL) 14690c52a0b3Seric sendto(e->e_from.q_paddr, 1, qq, &e->e_errorqueue); 14700c52a0b3Seric } 14710c52a0b3Seric } 14720c52a0b3Seric /* 14730c52a0b3Seric ** CHECKERRORS -- check a queue of addresses and process errors. 14740c52a0b3Seric ** 14750c52a0b3Seric ** Parameters: 14760c52a0b3Seric ** e -- the envelope to check. 14770c52a0b3Seric ** 14780c52a0b3Seric ** Returns: 14790c52a0b3Seric ** none. 14800c52a0b3Seric ** 14810c52a0b3Seric ** Side Effects: 14820c52a0b3Seric ** Arranges to queue all tempfailed messages in q 14830c52a0b3Seric ** or deliver error responses. 14840c52a0b3Seric */ 14850c52a0b3Seric 14860c52a0b3Seric checkerrors(e) 14870c52a0b3Seric register ENVELOPE *e; 14880c52a0b3Seric { 1489da91004bSeric register ADDRESS *q; 1490da91004bSeric 14910c52a0b3Seric # ifdef DEBUG 14926ef48975Seric if (tTd(4, 1)) 14930c52a0b3Seric { 1494e1e0dfbfSeric printf("\ncheckerrors: FatalErrors %d, errorqueue:\n"); 14950c52a0b3Seric printaddr(e->e_errorqueue, TRUE); 14960c52a0b3Seric } 14970c52a0b3Seric # endif DEBUG 14980c52a0b3Seric 14990c52a0b3Seric /* mail back the transcript on errors */ 15000c52a0b3Seric if (FatalErrors) 15010c52a0b3Seric savemail(); 15020c52a0b3Seric 15030c52a0b3Seric /* queue up anything laying around */ 15045cf56be3Seric if (e->e_dontqueue) 15055cf56be3Seric return; 1506da91004bSeric for (q = e->e_sendqueue; q != NULL; q = q->q_next) 1507da91004bSeric { 1508da91004bSeric if (bitset(QQUEUEUP, q->q_flags)) 15090c52a0b3Seric { 15100c52a0b3Seric # ifdef QUEUE 15110c52a0b3Seric queueup(e, FALSE); 15120c52a0b3Seric # else QUEUE 1513da91004bSeric syserr("checkerrors: trying to queue %s", e->e_df); 15140c52a0b3Seric # endif QUEUE 1515da91004bSeric break; 1516da91004bSeric } 15170c52a0b3Seric } 1518ea4dc939Seric } 1519