125a99e2eSeric # include <signal.h> 254aa2b0fSeric # include <errno.h> 3b20b3270Seric # include "sendmail.h" 4c77d1c25Seric # include <sys/stat.h> 525a99e2eSeric 6*ee6bf8dfSeric SCCSID(@(#)deliver.c 3.146 01/15/83); 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: 19588cad61Seric ** e -- the envelope to deliver. 20c77d1c25Seric ** firstto -- head of the address list to deliver to. 2125a99e2eSeric ** 2225a99e2eSeric ** Returns: 2325a99e2eSeric ** zero -- successfully delivered. 2425a99e2eSeric ** else -- some failure, see ExitStat for more info. 2525a99e2eSeric ** 2625a99e2eSeric ** Side Effects: 2725a99e2eSeric ** The standard input is passed off to someone. 2825a99e2eSeric */ 2925a99e2eSeric 30588cad61Seric deliver(e, firstto) 31588cad61Seric register ENVELOPE *e; 32c77d1c25Seric ADDRESS *firstto; 3325a99e2eSeric { 3478442df3Seric char *host; /* host being sent to */ 3578442df3Seric char *user; /* user being sent to */ 3625a99e2eSeric char **pvp; 375dfc646bSeric register char **mvp; 3825a99e2eSeric register char *p; 39588cad61Seric register MAILER *m; /* mailer for this recipient */ 406259796dSeric ADDRESS *ctladdr; 41c77d1c25Seric register ADDRESS *to = firstto; 42c579ef51Seric bool clever = FALSE; /* running user smtp to this mailer */ 43772e6e50Seric ADDRESS *tochain = NULL; /* chain of users in this mailer call */ 445826d9d3Seric register int rcode; /* response code */ 45*ee6bf8dfSeric char *pv[MAXPV+1]; 46*ee6bf8dfSeric char tobuf[MAXLINE-50]; /* text line of to people */ 47*ee6bf8dfSeric char buf[MAXNAME]; 48*ee6bf8dfSeric char tfrombuf[MAXNAME]; /* translated from person */ 49*ee6bf8dfSeric extern bool checkcompat(); 50*ee6bf8dfSeric extern ADDRESS *getctladdr(); 51*ee6bf8dfSeric extern char *remotename(); 5225a99e2eSeric 5335490626Seric errno = 0; 54da2935e1Seric if (bitset(QDONTSEND, to->q_flags)) 555dfc646bSeric return (0); 5625a99e2eSeric 5751552439Seric m = to->q_mailer; 5851552439Seric host = to->q_host; 5951552439Seric 6025a99e2eSeric # ifdef DEBUG 616ef48975Seric if (tTd(10, 1)) 625dfc646bSeric printf("\n--deliver, mailer=%d, host=`%s', first user=`%s'\n", 6351552439Seric m->m_mno, host, to->q_user); 6425a99e2eSeric # endif DEBUG 65f3dbc832Seric 66f3dbc832Seric /* 67f3dbc832Seric ** If this mailer is expensive, and if we don't want to make 68f3dbc832Seric ** connections now, just mark these addresses and return. 69f3dbc832Seric ** This is useful if we want to batch connections to 70f3dbc832Seric ** reduce load. This will cause the messages to be 71f3dbc832Seric ** queued up, and a daemon will come along to send the 72f3dbc832Seric ** messages later. 73f3dbc832Seric ** This should be on a per-mailer basis. 74f3dbc832Seric */ 75f3dbc832Seric 76317680d6Seric if (NoConnect && !QueueRun && bitset(M_EXPENSIVE, m->m_flags) && 77317680d6Seric !Verbose) 78f3dbc832Seric { 79f3dbc832Seric for (; to != NULL; to = to->q_next) 80f4560e80Seric { 81f4560e80Seric if (bitset(QDONTSEND, to->q_flags) || to->q_mailer != m) 82f4560e80Seric continue; 83f3dbc832Seric to->q_flags |= QQUEUEUP|QDONTSEND; 84588cad61Seric e->e_to = to->q_paddr; 85eb238f8cSeric message(Arpa_Info, "queued"); 86eb238f8cSeric if (LogLevel > 4) 87eb238f8cSeric logdelivery("queued"); 88f4560e80Seric } 89588cad61Seric e->e_to = NULL; 90f3dbc832Seric return (0); 91f3dbc832Seric } 92f3dbc832Seric 9325a99e2eSeric /* 945dfc646bSeric ** Do initial argv setup. 955dfc646bSeric ** Insert the mailer name. Notice that $x expansion is 965dfc646bSeric ** NOT done on the mailer name. Then, if the mailer has 975dfc646bSeric ** a picky -f flag, we insert it as appropriate. This 985dfc646bSeric ** code does not check for 'pv' overflow; this places a 995dfc646bSeric ** manifest lower limit of 4 for MAXPV. 1003bea8136Seric ** The from address rewrite is expected to make 1013bea8136Seric ** the address relative to the other end. 1025dfc646bSeric */ 1035dfc646bSeric 10478442df3Seric /* rewrite from address, using rewriting rules */ 105588cad61Seric expand("$f", buf, &buf[sizeof buf - 1], e); 106*ee6bf8dfSeric (void) strcpy(tfrombuf, remotename(buf, m, TRUE, TRUE)); 10778442df3Seric 108588cad61Seric define('g', tfrombuf, e); /* translated sender address */ 109588cad61Seric define('h', host, e); /* to host */ 1105dfc646bSeric Errors = 0; 1115dfc646bSeric pvp = pv; 1125dfc646bSeric *pvp++ = m->m_argv[0]; 1135dfc646bSeric 1145dfc646bSeric /* insert -f or -r flag as appropriate */ 1155dfc646bSeric if (bitset(M_FOPT|M_ROPT, m->m_flags) && FromFlag) 1165dfc646bSeric { 1175dfc646bSeric if (bitset(M_FOPT, m->m_flags)) 1185dfc646bSeric *pvp++ = "-f"; 1195dfc646bSeric else 1205dfc646bSeric *pvp++ = "-r"; 121588cad61Seric expand("$g", buf, &buf[sizeof buf - 1], e); 1225dfc646bSeric *pvp++ = newstr(buf); 1235dfc646bSeric } 1245dfc646bSeric 1255dfc646bSeric /* 1265dfc646bSeric ** Append the other fixed parts of the argv. These run 1275dfc646bSeric ** up to the first entry containing "$u". There can only 1285dfc646bSeric ** be one of these, and there are only a few more slots 1295dfc646bSeric ** in the pv after it. 1305dfc646bSeric */ 1315dfc646bSeric 1325dfc646bSeric for (mvp = m->m_argv; (p = *++mvp) != NULL; ) 1335dfc646bSeric { 1345dfc646bSeric while ((p = index(p, '$')) != NULL) 1355dfc646bSeric if (*++p == 'u') 1365dfc646bSeric break; 1375dfc646bSeric if (p != NULL) 1385dfc646bSeric break; 1395dfc646bSeric 1405dfc646bSeric /* this entry is safe -- go ahead and process it */ 141588cad61Seric expand(*mvp, buf, &buf[sizeof buf - 1], e); 1425dfc646bSeric *pvp++ = newstr(buf); 1435dfc646bSeric if (pvp >= &pv[MAXPV - 3]) 1445dfc646bSeric { 1455dfc646bSeric syserr("Too many parameters to %s before $u", pv[0]); 1465dfc646bSeric return (-1); 1475dfc646bSeric } 1485dfc646bSeric } 149c579ef51Seric 15033db8731Seric /* 15133db8731Seric ** If we have no substitution for the user name in the argument 15233db8731Seric ** list, we know that we must supply the names otherwise -- and 15333db8731Seric ** SMTP is the answer!! 15433db8731Seric */ 15533db8731Seric 1565dfc646bSeric if (*mvp == NULL) 157c579ef51Seric { 158c579ef51Seric /* running SMTP */ 1592c7e1b8dSeric # ifdef SMTP 160c579ef51Seric clever = TRUE; 161c579ef51Seric *pvp = NULL; 1622c7e1b8dSeric # else SMTP 16333db8731Seric /* oops! we don't implement SMTP */ 1642c7e1b8dSeric syserr("SMTP style mailer"); 1652c7e1b8dSeric return (EX_SOFTWARE); 1662c7e1b8dSeric # endif SMTP 167c579ef51Seric } 1685dfc646bSeric 1695dfc646bSeric /* 1705dfc646bSeric ** At this point *mvp points to the argument with $u. We 1715dfc646bSeric ** run through our address list and append all the addresses 1725dfc646bSeric ** we can. If we run out of space, do not fret! We can 1735dfc646bSeric ** always send another copy later. 1745dfc646bSeric */ 1755dfc646bSeric 1765dfc646bSeric tobuf[0] = '\0'; 177588cad61Seric e->e_to = tobuf; 1786259796dSeric ctladdr = NULL; 1795dfc646bSeric for (; to != NULL; to = to->q_next) 1805dfc646bSeric { 1815dfc646bSeric /* avoid sending multiple recipients to dumb mailers */ 182bea22b26Seric if (tobuf[0] != '\0' && !bitset(M_MUSER, m->m_flags)) 1835dfc646bSeric break; 1845dfc646bSeric 1855dfc646bSeric /* if already sent or not for this host, don't send */ 186da2935e1Seric if (bitset(QDONTSEND, to->q_flags) || 187da2935e1Seric strcmp(to->q_host, host) != 0 || 188da2935e1Seric to->q_mailer != firstto->q_mailer) 1895dfc646bSeric continue; 1906259796dSeric 1914b22ea87Seric /* avoid overflowing tobuf */ 192588cad61Seric if (sizeof tobuf - (strlen(to->q_paddr) + strlen(tobuf) + 2) < 0) 1934b22ea87Seric break; 1944b22ea87Seric 195772e6e50Seric # ifdef DEBUG 1966ef48975Seric if (tTd(10, 1)) 197772e6e50Seric { 198772e6e50Seric printf("\nsend to "); 199772e6e50Seric printaddr(to, FALSE); 200772e6e50Seric } 201772e6e50Seric # endif DEBUG 202772e6e50Seric 2036259796dSeric /* compute effective uid/gid when sending */ 2047da1035fSeric if (to->q_mailer == ProgMailer) 2056259796dSeric ctladdr = getctladdr(to); 2066259796dSeric 2075dfc646bSeric user = to->q_user; 208588cad61Seric e->e_to = to->q_paddr; 2095dfc646bSeric to->q_flags |= QDONTSEND; 2105dfc646bSeric 2115dfc646bSeric /* 2125dfc646bSeric ** Check to see that these people are allowed to 2135dfc646bSeric ** talk to each other. 2142a6e0786Seric */ 2152a6e0786Seric 2162a6e0786Seric if (!checkcompat(to)) 2175dfc646bSeric { 218198d9be0Seric giveresponse(EX_UNAVAILABLE, m, e); 2195dfc646bSeric continue; 2205dfc646bSeric } 2212a6e0786Seric 2222a6e0786Seric /* 2239ec9501bSeric ** Strip quote bits from names if the mailer is dumb 2249ec9501bSeric ** about them. 22525a99e2eSeric */ 22625a99e2eSeric 2272a6e0786Seric if (bitset(M_STRIPQ, m->m_flags)) 22825a99e2eSeric { 2299ec9501bSeric stripquotes(user, TRUE); 2309ec9501bSeric stripquotes(host, TRUE); 2319ec9501bSeric } 2329ec9501bSeric else 2339ec9501bSeric { 2349ec9501bSeric stripquotes(user, FALSE); 2359ec9501bSeric stripquotes(host, FALSE); 23625a99e2eSeric } 23725a99e2eSeric 238cdb828c5Seric /* hack attack -- delivermail compatibility */ 239cdb828c5Seric if (m == ProgMailer && *user == '|') 240cdb828c5Seric user++; 241cdb828c5Seric 24225a99e2eSeric /* 2433efaed6eSeric ** If an error message has already been given, don't 2443efaed6eSeric ** bother to send to this address. 2453efaed6eSeric ** 2463efaed6eSeric ** >>>>>>>>>> This clause assumes that the local mailer 2473efaed6eSeric ** >> NOTE >> cannot do any further aliasing; that 2483efaed6eSeric ** >>>>>>>>>> function is subsumed by sendmail. 2493efaed6eSeric */ 2503efaed6eSeric 2516cae517dSeric if (bitset(QBADADDR|QQUEUEUP, to->q_flags)) 2523efaed6eSeric continue; 2533efaed6eSeric 254f2fec898Seric /* save statistics.... */ 255588cad61Seric markstats(e, to); 256f2fec898Seric 2573efaed6eSeric /* 25825a99e2eSeric ** See if this user name is "special". 25925a99e2eSeric ** If the user name has a slash in it, assume that this 26051552439Seric ** is a file -- send it off without further ado. Note 26151552439Seric ** that this type of addresses is not processed along 26251552439Seric ** with the others, so we fudge on the To person. 26325a99e2eSeric */ 26425a99e2eSeric 2657da1035fSeric if (m == LocalMailer) 26625a99e2eSeric { 267a49f24c0Seric if (user[0] == '/') 26825a99e2eSeric { 2695826d9d3Seric rcode = mailfile(user, getctladdr(to)); 270198d9be0Seric giveresponse(rcode, m, e); 2715dfc646bSeric continue; 27225a99e2eSeric } 27325a99e2eSeric } 27425a99e2eSeric 27513bbc08cSeric /* 27613bbc08cSeric ** Address is verified -- add this user to mailer 27713bbc08cSeric ** argv, and add it to the print list of recipients. 27813bbc08cSeric */ 27913bbc08cSeric 280508daeccSeric /* link together the chain of recipients */ 281508daeccSeric to->q_tchain = tochain; 282508daeccSeric tochain = to; 283508daeccSeric 2845dfc646bSeric /* create list of users for error messages */ 285db8841e9Seric (void) strcat(tobuf, ","); 286db8841e9Seric (void) strcat(tobuf, to->q_paddr); 287588cad61Seric define('u', user, e); /* to user */ 288588cad61Seric define('z', to->q_home, e); /* user's home */ 2895dfc646bSeric 290c579ef51Seric /* 291508daeccSeric ** Expand out this user into argument list. 292c579ef51Seric */ 293c579ef51Seric 294508daeccSeric if (!clever) 295c579ef51Seric { 296588cad61Seric expand(*mvp, buf, &buf[sizeof buf - 1], e); 2975dfc646bSeric *pvp++ = newstr(buf); 2985dfc646bSeric if (pvp >= &pv[MAXPV - 2]) 2995dfc646bSeric { 3005dfc646bSeric /* allow some space for trailing parms */ 3015dfc646bSeric break; 3025dfc646bSeric } 3035dfc646bSeric } 304c579ef51Seric } 3055dfc646bSeric 306145b49b1Seric /* see if any addresses still exist */ 307145b49b1Seric if (tobuf[0] == '\0') 308c579ef51Seric { 309588cad61Seric define('g', (char *) NULL, e); 310145b49b1Seric return (0); 311c579ef51Seric } 312145b49b1Seric 3135dfc646bSeric /* print out messages as full list */ 31463780dbdSeric e->e_to = tobuf + 1; 3155dfc646bSeric 3165dfc646bSeric /* 3175dfc646bSeric ** Fill out any parameters after the $u parameter. 3185dfc646bSeric */ 3195dfc646bSeric 320c579ef51Seric while (!clever && *++mvp != NULL) 3215dfc646bSeric { 322588cad61Seric expand(*mvp, buf, &buf[sizeof buf - 1], e); 3235dfc646bSeric *pvp++ = newstr(buf); 3245dfc646bSeric if (pvp >= &pv[MAXPV]) 3255dfc646bSeric syserr("deliver: pv overflow after $u for %s", pv[0]); 3265dfc646bSeric } 3275dfc646bSeric *pvp++ = NULL; 3285dfc646bSeric 32925a99e2eSeric /* 33025a99e2eSeric ** Call the mailer. 3316328bdf7Seric ** The argument vector gets built, pipes 33225a99e2eSeric ** are created as necessary, and we fork & exec as 3336328bdf7Seric ** appropriate. 334c579ef51Seric ** If we are running SMTP, we just need to clean up. 33525a99e2eSeric */ 33625a99e2eSeric 337588cad61Seric message(Arpa_Info, "Connecting to %s.%s...", host, m->m_name); 338588cad61Seric 3396259796dSeric if (ctladdr == NULL) 340588cad61Seric ctladdr = &e->e_from; 3412c7e1b8dSeric # ifdef SMTP 342c579ef51Seric if (clever) 343c579ef51Seric { 344588cad61Seric /* send the initial SMTP protocol */ 34577b52738Seric rcode = smtpinit(m, pv); 346588cad61Seric 34763780dbdSeric if (rcode == EX_OK) 34863780dbdSeric { 349588cad61Seric /* send the recipient list */ 35063780dbdSeric tobuf[0] = '\0'; 351588cad61Seric for (to = tochain; to != NULL; to = to->q_tchain) 352588cad61Seric { 353588cad61Seric int i; 354588cad61Seric 35563780dbdSeric e->e_to = to->q_paddr; 35677b52738Seric i = smtprcpt(to, m); 357588cad61Seric if (i != EX_OK) 358588cad61Seric { 35983b7ddc9Seric markfailure(e, to, i); 360198d9be0Seric giveresponse(i, m, e); 36163780dbdSeric } 36263780dbdSeric else 36363780dbdSeric { 36463780dbdSeric strcat(tobuf, ","); 36563780dbdSeric strcat(tobuf, to->q_paddr); 366588cad61Seric } 367588cad61Seric } 368588cad61Seric 36963780dbdSeric /* now send the data */ 37063780dbdSeric if (tobuf[0] == '\0') 37163780dbdSeric e->e_to = NULL; 37263780dbdSeric else 37363780dbdSeric { 37463780dbdSeric e->e_to = tobuf + 1; 37577b52738Seric rcode = smtpdata(m, e); 37663780dbdSeric } 37763780dbdSeric 37863780dbdSeric /* now close the connection */ 37977b52738Seric smtpquit(pv[0], m); 38063780dbdSeric } 381c579ef51Seric } 382c579ef51Seric else 3832c7e1b8dSeric # endif SMTP 38477b52738Seric rcode = sendoff(e, m, pv, ctladdr); 3855dfc646bSeric 386c77d1c25Seric /* 38763780dbdSeric ** Do final status disposal. 38863780dbdSeric ** We check for something in tobuf for the SMTP case. 389c77d1c25Seric ** If we got a temporary failure, arrange to queue the 390c77d1c25Seric ** addressees. 391c77d1c25Seric */ 392c77d1c25Seric 39363780dbdSeric if (tobuf[0] != '\0') 394198d9be0Seric giveresponse(rcode, m, e); 39563780dbdSeric if (rcode != EX_OK) 396c77d1c25Seric { 397772e6e50Seric for (to = tochain; to != NULL; to = to->q_tchain) 39883b7ddc9Seric markfailure(e, to, rcode); 399c77d1c25Seric } 400c77d1c25Seric 40135490626Seric errno = 0; 402588cad61Seric define('g', (char *) NULL, e); 4035826d9d3Seric return (rcode); 40425a99e2eSeric } 4055dfc646bSeric /* 40683b7ddc9Seric ** MARKFAILURE -- mark a failure on a specific address. 40783b7ddc9Seric ** 40883b7ddc9Seric ** Parameters: 40983b7ddc9Seric ** e -- the envelope we are sending. 41083b7ddc9Seric ** q -- the address to mark. 41183b7ddc9Seric ** rcode -- the code signifying the particular failure. 41283b7ddc9Seric ** 41383b7ddc9Seric ** Returns: 41483b7ddc9Seric ** none. 41583b7ddc9Seric ** 41683b7ddc9Seric ** Side Effects: 41783b7ddc9Seric ** marks the address (and possibly the envelope) with the 41883b7ddc9Seric ** failure so that an error will be returned or 41983b7ddc9Seric ** the message will be queued, as appropriate. 42083b7ddc9Seric */ 42183b7ddc9Seric 42283b7ddc9Seric markfailure(e, q, rcode) 42383b7ddc9Seric register ENVELOPE *e; 42483b7ddc9Seric register ADDRESS *q; 42583b7ddc9Seric int rcode; 42683b7ddc9Seric { 42783b7ddc9Seric if (rcode == EX_OK) 42883b7ddc9Seric return; 42983b7ddc9Seric else if (rcode != EX_TEMPFAIL) 43083b7ddc9Seric q->q_flags |= QBADADDR; 43183b7ddc9Seric else if (curtime() > e->e_ctime + TimeOut) 43283b7ddc9Seric { 43383b7ddc9Seric extern char *pintvl(); 434198d9be0Seric char buf[MAXLINE]; 43583b7ddc9Seric 43683b7ddc9Seric if (!bitset(EF_TIMEOUT, e->e_flags)) 437198d9be0Seric { 438198d9be0Seric (void) sprintf(buf, "Cannot send message for %s", 43983b7ddc9Seric pintvl(TimeOut, FALSE)); 440198d9be0Seric if (e->e_message != NULL) 441198d9be0Seric free(e->e_message); 442198d9be0Seric e->e_message = newstr(buf); 443198d9be0Seric message(Arpa_Info, buf); 444198d9be0Seric } 44583b7ddc9Seric q->q_flags |= QBADADDR; 44683b7ddc9Seric e->e_flags |= EF_TIMEOUT; 44783b7ddc9Seric } 44883b7ddc9Seric else 44983b7ddc9Seric q->q_flags |= QQUEUEUP; 45083b7ddc9Seric } 45183b7ddc9Seric /* 45232d19d43Seric ** DOFORK -- do a fork, retrying a couple of times on failure. 45332d19d43Seric ** 45432d19d43Seric ** This MUST be a macro, since after a vfork we are running 45532d19d43Seric ** two processes on the same stack!!! 45632d19d43Seric ** 45732d19d43Seric ** Parameters: 45832d19d43Seric ** none. 45932d19d43Seric ** 46032d19d43Seric ** Returns: 46132d19d43Seric ** From a macro??? You've got to be kidding! 46232d19d43Seric ** 46332d19d43Seric ** Side Effects: 46432d19d43Seric ** Modifies the ==> LOCAL <== variable 'pid', leaving: 46532d19d43Seric ** pid of child in parent, zero in child. 46632d19d43Seric ** -1 on unrecoverable error. 46732d19d43Seric ** 46832d19d43Seric ** Notes: 46932d19d43Seric ** I'm awfully sorry this looks so awful. That's 47032d19d43Seric ** vfork for you..... 47132d19d43Seric */ 47232d19d43Seric 47332d19d43Seric # define NFORKTRIES 5 4744300ddf0Seric # ifdef VMUNIX 47532d19d43Seric # define XFORK vfork 4764300ddf0Seric # else VMUNIX 47732d19d43Seric # define XFORK fork 4784300ddf0Seric # endif VMUNIX 47932d19d43Seric 48032d19d43Seric # define DOFORK(fORKfN) \ 48132d19d43Seric {\ 48232d19d43Seric register int i;\ 48332d19d43Seric \ 48432d19d43Seric for (i = NFORKTRIES; i-- > 0; )\ 48532d19d43Seric {\ 48632d19d43Seric pid = fORKfN();\ 48732d19d43Seric if (pid >= 0)\ 48832d19d43Seric break;\ 4895e663df1Seric sleep(NFORKTRIES - i);\ 49032d19d43Seric }\ 49132d19d43Seric } 49232d19d43Seric /* 4932ed72599Seric ** DOFORK -- simple fork interface to DOFORK. 4942ed72599Seric ** 4952ed72599Seric ** Parameters: 4962ed72599Seric ** none. 4972ed72599Seric ** 4982ed72599Seric ** Returns: 4992ed72599Seric ** pid of child in parent. 5002ed72599Seric ** zero in child. 5012ed72599Seric ** -1 on error. 5022ed72599Seric ** 5032ed72599Seric ** Side Effects: 5042ed72599Seric ** returns twice, once in parent and once in child. 5052ed72599Seric */ 5062ed72599Seric 5072ed72599Seric dofork() 5082ed72599Seric { 5092ed72599Seric register int pid; 5102ed72599Seric 5112ed72599Seric DOFORK(fork); 5122ed72599Seric return (pid); 5132ed72599Seric } 5142ed72599Seric /* 5155dfc646bSeric ** SENDOFF -- send off call to mailer & collect response. 5165dfc646bSeric ** 5175dfc646bSeric ** Parameters: 518588cad61Seric ** e -- the envelope to mail. 5195dfc646bSeric ** m -- mailer descriptor. 5205dfc646bSeric ** pvp -- parameter vector to send to it. 5216259796dSeric ** ctladdr -- an address pointer controlling the 5226259796dSeric ** user/groupid etc. of the mailer. 5235dfc646bSeric ** 5245dfc646bSeric ** Returns: 5255dfc646bSeric ** exit status of mailer. 5265dfc646bSeric ** 5275dfc646bSeric ** Side Effects: 5285dfc646bSeric ** none. 5295dfc646bSeric */ 5305dfc646bSeric 53177b52738Seric sendoff(e, m, pvp, ctladdr) 532588cad61Seric register ENVELOPE *e; 533588cad61Seric MAILER *m; 5345dfc646bSeric char **pvp; 5356259796dSeric ADDRESS *ctladdr; 5365dfc646bSeric { 537c579ef51Seric auto FILE *mfile; 538c579ef51Seric auto FILE *rfile; 5395dfc646bSeric register int i; 540c579ef51Seric int pid; 541c579ef51Seric 542c579ef51Seric /* 543c579ef51Seric ** Create connection to mailer. 544c579ef51Seric */ 545c579ef51Seric 546c579ef51Seric pid = openmailer(m, pvp, ctladdr, FALSE, &mfile, &rfile); 547c579ef51Seric if (pid < 0) 548c579ef51Seric return (-1); 549c579ef51Seric 550c579ef51Seric /* 551c579ef51Seric ** Format and send message. 552c579ef51Seric */ 553c579ef51Seric 55477b52738Seric putfromline(mfile, m); 55577b52738Seric (*e->e_puthdr)(mfile, m, e); 55677b52738Seric putline("\n", mfile, m); 55777b52738Seric (*e->e_putbody)(mfile, m, e); 558c579ef51Seric (void) fclose(mfile); 559c579ef51Seric 560c579ef51Seric i = endmailer(pid, pvp[0]); 561bc6e2962Seric 562bc6e2962Seric /* arrange a return receipt if requested */ 563588cad61Seric if (e->e_receiptto != NULL && bitset(M_LOCAL, m->m_flags)) 564bc6e2962Seric { 565588cad61Seric e->e_flags |= EF_SENDRECEIPT; 566bc6e2962Seric /* do we want to send back more info? */ 567bc6e2962Seric } 568bc6e2962Seric 569c579ef51Seric return (i); 570c579ef51Seric } 571c579ef51Seric /* 572c579ef51Seric ** ENDMAILER -- Wait for mailer to terminate. 573c579ef51Seric ** 574c579ef51Seric ** We should never get fatal errors (e.g., segmentation 575c579ef51Seric ** violation), so we report those specially. For other 576c579ef51Seric ** errors, we choose a status message (into statmsg), 577c579ef51Seric ** and if it represents an error, we print it. 578c579ef51Seric ** 579c579ef51Seric ** Parameters: 580c579ef51Seric ** pid -- pid of mailer. 581c579ef51Seric ** name -- name of mailer (for error messages). 582c579ef51Seric ** 583c579ef51Seric ** Returns: 584c579ef51Seric ** exit code of mailer. 585c579ef51Seric ** 586c579ef51Seric ** Side Effects: 587c579ef51Seric ** none. 588c579ef51Seric */ 589c579ef51Seric 590c579ef51Seric endmailer(pid, name) 591c579ef51Seric int pid; 592c579ef51Seric char *name; 593c579ef51Seric { 594588cad61Seric int st; 595c579ef51Seric 59633db8731Seric /* in the IPC case there is nothing to wait for */ 59733db8731Seric if (pid == 0) 59833db8731Seric return (EX_OK); 59933db8731Seric 60033db8731Seric /* wait for the mailer process to die and collect status */ 601588cad61Seric st = waitfor(pid); 602588cad61Seric if (st == -1) 60378de67c1Seric { 604588cad61Seric syserr("endmailer %s: wait", name); 605588cad61Seric return (EX_SOFTWARE); 606c579ef51Seric } 60733db8731Seric 60833db8731Seric /* see if it died a horrid death */ 609c579ef51Seric if ((st & 0377) != 0) 610c579ef51Seric { 611588cad61Seric syserr("endmailer %s: stat %o", name, st); 612c579ef51Seric ExitStat = EX_UNAVAILABLE; 613588cad61Seric return (EX_UNAVAILABLE); 614c579ef51Seric } 61533db8731Seric 61633db8731Seric /* normal death -- return status */ 617588cad61Seric st = (st >> 8) & 0377; 618588cad61Seric return (st); 619c579ef51Seric } 620c579ef51Seric /* 621c579ef51Seric ** OPENMAILER -- open connection to mailer. 622c579ef51Seric ** 623c579ef51Seric ** Parameters: 624c579ef51Seric ** m -- mailer descriptor. 625c579ef51Seric ** pvp -- parameter vector to pass to mailer. 626c579ef51Seric ** ctladdr -- controlling address for user. 627c579ef51Seric ** clever -- create a full duplex connection. 628c579ef51Seric ** pmfile -- pointer to mfile (to mailer) connection. 629c579ef51Seric ** prfile -- pointer to rfile (from mailer) connection. 630c579ef51Seric ** 631c579ef51Seric ** Returns: 63233db8731Seric ** pid of mailer ( > 0 ). 633c579ef51Seric ** -1 on error. 63433db8731Seric ** zero on an IPC connection. 635c579ef51Seric ** 636c579ef51Seric ** Side Effects: 637c579ef51Seric ** creates a mailer in a subprocess. 638c579ef51Seric */ 639c579ef51Seric 640c579ef51Seric openmailer(m, pvp, ctladdr, clever, pmfile, prfile) 641588cad61Seric MAILER *m; 642c579ef51Seric char **pvp; 643c579ef51Seric ADDRESS *ctladdr; 644c579ef51Seric bool clever; 645c579ef51Seric FILE **pmfile; 646c579ef51Seric FILE **prfile; 647c579ef51Seric { 6485dfc646bSeric int pid; 649f8952a83Seric int mpvect[2]; 650c579ef51Seric int rpvect[2]; 6515dfc646bSeric FILE *mfile; 652c579ef51Seric FILE *rfile; 6535dfc646bSeric extern FILE *fdopen(); 6545dfc646bSeric 6555dfc646bSeric # ifdef DEBUG 6566ef48975Seric if (tTd(11, 1)) 6575dfc646bSeric { 6588c57e552Seric printf("openmailer:"); 6595dfc646bSeric printav(pvp); 6605dfc646bSeric } 6615dfc646bSeric # endif DEBUG 66235490626Seric errno = 0; 6635dfc646bSeric 66433db8731Seric /* 66533db8731Seric ** Deal with the special case of mail handled through an IPC 66633db8731Seric ** connection. 66733db8731Seric ** In this case we don't actually fork. We must be 66833db8731Seric ** running SMTP for this to work. We will return a 66933db8731Seric ** zero pid to indicate that we are running IPC. 67033db8731Seric */ 67133db8731Seric 67233db8731Seric if (strcmp(m->m_mailer, "[IPC]") == 0) 67333db8731Seric { 674588cad61Seric #ifdef DAEMON 67533db8731Seric register int i; 6761277f9a8Seric register u_short port; 67733db8731Seric 67833db8731Seric if (!clever) 67933db8731Seric syserr("non-clever IPC"); 68093b6e3cfSeric if (pvp[2] != NULL) 6811277f9a8Seric port = atoi(pvp[2]); 68293b6e3cfSeric else 6831277f9a8Seric port = 0; 6841277f9a8Seric i = makeconnection(pvp[1], port, pmfile, prfile); 68533db8731Seric if (i != EX_OK) 686ed854c7bSeric { 687ed854c7bSeric ExitStat = i; 68833db8731Seric return (-1); 689ed854c7bSeric } 69033db8731Seric else 69133db8731Seric return (0); 692588cad61Seric #else DAEMON 693588cad61Seric syserr("openmailer: no IPC"); 694588cad61Seric return (-1); 69533db8731Seric #endif DAEMON 696588cad61Seric } 69733db8731Seric 6986328bdf7Seric /* create a pipe to shove the mail through */ 699f8952a83Seric if (pipe(mpvect) < 0) 70025a99e2eSeric { 701588cad61Seric syserr("openmailer: pipe (to mailer)"); 70225a99e2eSeric return (-1); 70325a99e2eSeric } 704c579ef51Seric 7052c7e1b8dSeric #ifdef SMTP 706c579ef51Seric /* if this mailer speaks smtp, create a return pipe */ 707c579ef51Seric if (clever && pipe(rpvect) < 0) 708c579ef51Seric { 709588cad61Seric syserr("openmailer: pipe (from mailer)"); 710c579ef51Seric (void) close(mpvect[0]); 711c579ef51Seric (void) close(mpvect[1]); 712c579ef51Seric return (-1); 713c579ef51Seric } 7142c7e1b8dSeric #endif SMTP 715c579ef51Seric 71633db8731Seric /* 71733db8731Seric ** Actually fork the mailer process. 71833db8731Seric ** DOFORK is clever about retrying. 71933db8731Seric */ 72033db8731Seric 7219a6a5f55Seric if (CurEnv->e_xfp != NULL) 7229a6a5f55Seric (void) fflush(CurEnv->e_xfp); /* for debugging */ 723588cad61Seric (void) fflush(stdout); 72432d19d43Seric DOFORK(XFORK); 725f129ec7dSeric /* pid is set by DOFORK */ 72625a99e2eSeric if (pid < 0) 72725a99e2eSeric { 72833db8731Seric /* failure */ 729588cad61Seric syserr("openmailer: cannot fork"); 730f8952a83Seric (void) close(mpvect[0]); 731f8952a83Seric (void) close(mpvect[1]); 732588cad61Seric #ifdef SMTP 733c579ef51Seric if (clever) 734c579ef51Seric { 735c579ef51Seric (void) close(rpvect[0]); 736c579ef51Seric (void) close(rpvect[1]); 737c579ef51Seric } 738588cad61Seric #endif SMTP 73925a99e2eSeric return (-1); 74025a99e2eSeric } 74125a99e2eSeric else if (pid == 0) 74225a99e2eSeric { 74325a99e2eSeric /* child -- set up input & exec mailer */ 74403ab8e55Seric /* make diagnostic output be standard output */ 7458f0e7860Seric (void) signal(SIGINT, SIG_IGN); 7468f0e7860Seric (void) signal(SIGHUP, SIG_IGN); 7470984da9fSeric (void) signal(SIGTERM, SIG_DFL); 748f8952a83Seric 749f8952a83Seric /* arrange to filter standard & diag output of command */ 750c579ef51Seric if (clever) 751c579ef51Seric { 752c579ef51Seric (void) close(rpvect[0]); 753c579ef51Seric (void) close(1); 754c579ef51Seric (void) dup(rpvect[1]); 755c579ef51Seric (void) close(rpvect[1]); 756c579ef51Seric } 757276723a8Seric else if (OpMode == MD_SMTP || HoldErrs) 758f8952a83Seric { 759588cad61Seric /* put mailer output in transcript */ 760f8952a83Seric (void) close(1); 7619a6a5f55Seric (void) dup(fileno(CurEnv->e_xfp)); 762f8952a83Seric } 763db8841e9Seric (void) close(2); 764db8841e9Seric (void) dup(1); 765f8952a83Seric 766f8952a83Seric /* arrange to get standard input */ 767f8952a83Seric (void) close(mpvect[1]); 768db8841e9Seric (void) close(0); 769f8952a83Seric if (dup(mpvect[0]) < 0) 77025a99e2eSeric { 77125a99e2eSeric syserr("Cannot dup to zero!"); 772a590b978Seric _exit(EX_OSERR); 77325a99e2eSeric } 774f8952a83Seric (void) close(mpvect[0]); 7752a6e0786Seric if (!bitset(M_RESTR, m->m_flags)) 7760984da9fSeric { 777e36b99e2Seric if (ctladdr->q_uid == 0) 778e36b99e2Seric { 779e36b99e2Seric (void) setgid(DefGid); 780e36b99e2Seric (void) setuid(DefUid); 781e36b99e2Seric } 782e36b99e2Seric else 78369f29479Seric { 784e36b99e2Seric (void) setgid(ctladdr->q_gid); 785e36b99e2Seric (void) setuid(ctladdr->q_uid); 78669f29479Seric } 7870984da9fSeric } 788588cad61Seric 789e374fd72Seric /* 790e374fd72Seric ** We have to be careful with vfork - we can't mung up the 791e374fd72Seric ** memory but we don't want the mailer to inherit any extra 792e374fd72Seric ** open files. Chances are the mailer won't 793e374fd72Seric ** care about an extra file, but then again you never know. 794e374fd72Seric ** Actually, we would like to close(fileno(pwf)), but it's 795e374fd72Seric ** declared static so we can't. But if we fclose(pwf), which 796e374fd72Seric ** is what endpwent does, it closes it in the parent too and 797e374fd72Seric ** the next getpwnam will be slower. If you have a weird 798e374fd72Seric ** mailer that chokes on the extra file you should do the 7994300ddf0Seric ** endpwent(). -MRH 800e374fd72Seric ** 801e374fd72Seric ** Similar comments apply to log. However, openlog is 802e374fd72Seric ** clever enough to set the FIOCLEX mode on the file, 803e374fd72Seric ** so it will be closed automatically on the exec. 804e374fd72Seric */ 805e374fd72Seric 806588cad61Seric closeall(); 80733db8731Seric 80833db8731Seric /* try to execute the mailer */ 80925a99e2eSeric execv(m->m_mailer, pvp); 81033db8731Seric 81125a99e2eSeric /* syserr fails because log is closed */ 81225a99e2eSeric /* syserr("Cannot exec %s", m->m_mailer); */ 81332d19d43Seric printf("Cannot exec '%s' errno=%d\n", m->m_mailer, errno); 814db8841e9Seric (void) fflush(stdout); 815a590b978Seric _exit(EX_UNAVAILABLE); 81625a99e2eSeric } 81725a99e2eSeric 818f8952a83Seric /* 819c579ef51Seric ** Set up return value. 820f8952a83Seric */ 821f8952a83Seric 822f8952a83Seric (void) close(mpvect[0]); 823f8952a83Seric mfile = fdopen(mpvect[1], "w"); 824c579ef51Seric if (clever) 82525a99e2eSeric { 826c579ef51Seric (void) close(rpvect[1]); 827c579ef51Seric rfile = fdopen(rpvect[0], "r"); 82825a99e2eSeric } 829c579ef51Seric 830c579ef51Seric *pmfile = mfile; 831c579ef51Seric *prfile = rfile; 832c579ef51Seric 833c579ef51Seric return (pid); 83425a99e2eSeric } 83525a99e2eSeric /* 83625a99e2eSeric ** GIVERESPONSE -- Interpret an error response from a mailer 83725a99e2eSeric ** 83825a99e2eSeric ** Parameters: 83925a99e2eSeric ** stat -- the status code from the mailer (high byte 84025a99e2eSeric ** only; core dumps must have been taken care of 84125a99e2eSeric ** already). 84225a99e2eSeric ** m -- the mailer descriptor for this mailer. 84325a99e2eSeric ** 84425a99e2eSeric ** Returns: 845db8841e9Seric ** none. 84625a99e2eSeric ** 84725a99e2eSeric ** Side Effects: 848c1f9df2cSeric ** Errors may be incremented. 84925a99e2eSeric ** ExitStat may be set. 85025a99e2eSeric */ 85125a99e2eSeric 852588cad61Seric /*ARGSUSED*/ 853198d9be0Seric giveresponse(stat, m, e) 85425a99e2eSeric int stat; 855588cad61Seric register MAILER *m; 856198d9be0Seric ENVELOPE *e; 85725a99e2eSeric { 85825a99e2eSeric register char *statmsg; 85925a99e2eSeric extern char *SysExMsg[]; 86025a99e2eSeric register int i; 86125a99e2eSeric extern int N_SysEx; 862198d9be0Seric char buf[MAXLINE]; 86325a99e2eSeric 86413bbc08cSeric /* 86513bbc08cSeric ** Compute status message from code. 86613bbc08cSeric */ 86713bbc08cSeric 86825a99e2eSeric i = stat - EX__BASE; 869588cad61Seric if (stat == 0) 870588cad61Seric statmsg = "250 Sent"; 871588cad61Seric else if (i < 0 || i > N_SysEx) 872588cad61Seric { 873588cad61Seric (void) sprintf(buf, "554 unknown mailer error %d", stat); 874588cad61Seric stat = EX_UNAVAILABLE; 875588cad61Seric statmsg = buf; 876588cad61Seric } 877198d9be0Seric else if (stat == EX_TEMPFAIL) 878198d9be0Seric { 879198d9be0Seric extern char *sys_errlist[]; 880198d9be0Seric extern int sys_nerr; 881198d9be0Seric 8828557d168Seric (void) strcpy(buf, SysExMsg[i]); 8838557d168Seric if (errno != 0) 884198d9be0Seric { 8858557d168Seric (void) strcat(buf, ": "); 8868557d168Seric if (errno > 0 && errno < sys_nerr) 887198d9be0Seric (void) strcat(buf, sys_errlist[errno]); 888198d9be0Seric else 8898557d168Seric { 8908557d168Seric char xbuf[30]; 8918557d168Seric 8928557d168Seric (void) sprintf(xbuf, "Error %d", errno); 8938557d168Seric (void) strcat(buf, xbuf); 8948557d168Seric } 8958557d168Seric } 896198d9be0Seric statmsg = buf; 897198d9be0Seric } 89825a99e2eSeric else 89925a99e2eSeric statmsg = SysExMsg[i]; 900588cad61Seric 901588cad61Seric /* 902588cad61Seric ** Print the message as appropriate 903588cad61Seric */ 904588cad61Seric 905198d9be0Seric if (stat == EX_OK || stat == EX_TEMPFAIL) 9065826d9d3Seric message(Arpa_Info, &statmsg[4]); 90725a99e2eSeric else 90825a99e2eSeric { 909c1f9df2cSeric Errors++; 9105826d9d3Seric usrerr(statmsg); 91125a99e2eSeric } 91225a99e2eSeric 91325a99e2eSeric /* 91425a99e2eSeric ** Final cleanup. 91525a99e2eSeric ** Log a record of the transaction. Compute the new 91625a99e2eSeric ** ExitStat -- if we already had an error, stick with 91725a99e2eSeric ** that. 91825a99e2eSeric */ 91925a99e2eSeric 92061f5a1d4Seric if (LogLevel > ((stat == 0 || stat == EX_TEMPFAIL) ? 3 : 2)) 921eb238f8cSeric logdelivery(&statmsg[4]); 922eb238f8cSeric 923eb238f8cSeric if (stat != EX_TEMPFAIL) 924eb238f8cSeric setstat(stat); 925198d9be0Seric if (stat != EX_OK) 926198d9be0Seric { 927198d9be0Seric if (e->e_message != NULL) 928198d9be0Seric free(e->e_message); 929198d9be0Seric e->e_message = newstr(&statmsg[4]); 930198d9be0Seric } 9318557d168Seric errno = 0; 932eb238f8cSeric } 933eb238f8cSeric /* 934eb238f8cSeric ** LOGDELIVERY -- log the delivery in the system log 935eb238f8cSeric ** 936eb238f8cSeric ** Parameters: 937eb238f8cSeric ** stat -- the message to print for the status 938eb238f8cSeric ** 939eb238f8cSeric ** Returns: 940eb238f8cSeric ** none 941eb238f8cSeric ** 942eb238f8cSeric ** Side Effects: 943eb238f8cSeric ** none 944eb238f8cSeric */ 945eb238f8cSeric 946eb238f8cSeric logdelivery(stat) 947eb238f8cSeric char *stat; 9485cf56be3Seric { 9495cf56be3Seric extern char *pintvl(); 9505cf56be3Seric 951eb238f8cSeric # ifdef LOG 9525cf56be3Seric syslog(LOG_INFO, "%s: to=%s, delay=%s, stat=%s", CurEnv->e_id, 953eb238f8cSeric CurEnv->e_to, pintvl(curtime() - CurEnv->e_ctime, TRUE), stat); 95425a99e2eSeric # endif LOG 95525a99e2eSeric } 95625a99e2eSeric /* 95751552439Seric ** PUTFROMLINE -- output a UNIX-style from line (or whatever) 95825a99e2eSeric ** 95951552439Seric ** This can be made an arbitrary message separator by changing $l 96051552439Seric ** 96151552439Seric ** One of the ugliest hacks seen by human eyes is 96251552439Seric ** contained herein: UUCP wants those stupid 963588cad61Seric ** "emote from <host>" lines. Why oh why does a 96451552439Seric ** well-meaning programmer such as myself have to 96551552439Seric ** deal with this kind of antique garbage???? 96625a99e2eSeric ** 96725a99e2eSeric ** Parameters: 96851552439Seric ** fp -- the file to output to. 96951552439Seric ** m -- the mailer describing this entry. 97025a99e2eSeric ** 97125a99e2eSeric ** Returns: 97251552439Seric ** none 97325a99e2eSeric ** 97425a99e2eSeric ** Side Effects: 97551552439Seric ** outputs some text to fp. 97625a99e2eSeric */ 97725a99e2eSeric 97877b52738Seric putfromline(fp, m) 97951552439Seric register FILE *fp; 98051552439Seric register MAILER *m; 98125a99e2eSeric { 98251552439Seric char buf[MAXLINE]; 98325a99e2eSeric 98451552439Seric if (bitset(M_NHDR, m->m_flags)) 98551552439Seric return; 98613bbc08cSeric 9872c7e1b8dSeric # ifdef UGLYUUCP 988a49f24c0Seric if (bitset(M_UGLYUUCP, m->m_flags)) 98974b6e67bSeric { 99074b6e67bSeric extern char *macvalue(); 9918c57e552Seric char *sys = macvalue('g', CurEnv); 99274b6e67bSeric char *bang = index(sys, '!'); 99374b6e67bSeric 99474b6e67bSeric if (bang == NULL) 99574b6e67bSeric syserr("No ! in UUCP! (%s)", sys); 99674b6e67bSeric else 997588cad61Seric { 99874b6e67bSeric *bang = '\0'; 999518ad6b6Seric expand("From $f $d remote from $g\n", buf, 100051552439Seric &buf[sizeof buf - 1], CurEnv); 100174b6e67bSeric *bang = '!'; 100274b6e67bSeric } 1003588cad61Seric } 1004a36e30c9Seric else 10052c7e1b8dSeric # endif UGLYUUCP 100651552439Seric expand("$l\n", buf, &buf[sizeof buf - 1], CurEnv); 100777b52738Seric putline(buf, fp, m); 1008bc6e2962Seric } 1009bc6e2962Seric /* 101051552439Seric ** PUTBODY -- put the body of a message. 101151552439Seric ** 101251552439Seric ** Parameters: 101351552439Seric ** fp -- file to output onto. 101477b52738Seric ** m -- a mailer descriptor to control output format. 10159a6a5f55Seric ** e -- the envelope to put out. 101651552439Seric ** 101751552439Seric ** Returns: 101851552439Seric ** none. 101951552439Seric ** 102051552439Seric ** Side Effects: 102151552439Seric ** The message is written onto fp. 102251552439Seric */ 102351552439Seric 102477b52738Seric putbody(fp, m, e) 102551552439Seric FILE *fp; 1026588cad61Seric MAILER *m; 10279a6a5f55Seric register ENVELOPE *e; 102851552439Seric { 102977b52738Seric char buf[MAXLINE]; 103051552439Seric 103151552439Seric /* 103251552439Seric ** Output the body of the message 103351552439Seric */ 103451552439Seric 10359a6a5f55Seric if (e->e_dfp == NULL) 103651552439Seric { 10379a6a5f55Seric if (e->e_df != NULL) 10389a6a5f55Seric { 10399a6a5f55Seric e->e_dfp = fopen(e->e_df, "r"); 10409a6a5f55Seric if (e->e_dfp == NULL) 10419a6a5f55Seric syserr("Cannot open %s", e->e_df); 10429a6a5f55Seric } 10439a6a5f55Seric else 104477b52738Seric putline("<<< No Message Collected >>>", fp, m); 10459a6a5f55Seric } 10469a6a5f55Seric if (e->e_dfp != NULL) 10479a6a5f55Seric { 10489a6a5f55Seric rewind(e->e_dfp); 104977b52738Seric while (!ferror(fp) && fgets(buf, sizeof buf, e->e_dfp) != NULL) 105077b52738Seric putline(buf, fp, m); 105151552439Seric 10529a6a5f55Seric if (ferror(e->e_dfp)) 105351552439Seric { 105451552439Seric syserr("putbody: read error"); 105551552439Seric ExitStat = EX_IOERR; 105651552439Seric } 105751552439Seric } 105851552439Seric 105951552439Seric (void) fflush(fp); 106051552439Seric if (ferror(fp) && errno != EPIPE) 106151552439Seric { 106251552439Seric syserr("putbody: write error"); 106351552439Seric ExitStat = EX_IOERR; 106451552439Seric } 106551552439Seric errno = 0; 106625a99e2eSeric } 106725a99e2eSeric /* 106825a99e2eSeric ** MAILFILE -- Send a message to a file. 106925a99e2eSeric ** 1070f129ec7dSeric ** If the file has the setuid/setgid bits set, but NO execute 1071f129ec7dSeric ** bits, sendmail will try to become the owner of that file 1072f129ec7dSeric ** rather than the real user. Obviously, this only works if 1073f129ec7dSeric ** sendmail runs as root. 1074f129ec7dSeric ** 1075588cad61Seric ** This could be done as a subordinate mailer, except that it 1076588cad61Seric ** is used implicitly to save messages in ~/dead.letter. We 1077588cad61Seric ** view this as being sufficiently important as to include it 1078588cad61Seric ** here. For example, if the system is dying, we shouldn't have 1079588cad61Seric ** to create another process plus some pipes to save the message. 1080588cad61Seric ** 108125a99e2eSeric ** Parameters: 108225a99e2eSeric ** filename -- the name of the file to send to. 10836259796dSeric ** ctladdr -- the controlling address header -- includes 10846259796dSeric ** the userid/groupid to be when sending. 108525a99e2eSeric ** 108625a99e2eSeric ** Returns: 108725a99e2eSeric ** The exit code associated with the operation. 108825a99e2eSeric ** 108925a99e2eSeric ** Side Effects: 109025a99e2eSeric ** none. 109125a99e2eSeric */ 109225a99e2eSeric 10936259796dSeric mailfile(filename, ctladdr) 109425a99e2eSeric char *filename; 10956259796dSeric ADDRESS *ctladdr; 109625a99e2eSeric { 109725a99e2eSeric register FILE *f; 109832d19d43Seric register int pid; 109925a99e2eSeric 110032d19d43Seric /* 110132d19d43Seric ** Fork so we can change permissions here. 110232d19d43Seric ** Note that we MUST use fork, not vfork, because of 110332d19d43Seric ** the complications of calling subroutines, etc. 110432d19d43Seric */ 110532d19d43Seric 110632d19d43Seric DOFORK(fork); 110732d19d43Seric 110832d19d43Seric if (pid < 0) 110932d19d43Seric return (EX_OSERR); 111032d19d43Seric else if (pid == 0) 111132d19d43Seric { 111232d19d43Seric /* child -- actually write to file */ 1113f129ec7dSeric struct stat stb; 1114f129ec7dSeric 11150984da9fSeric (void) signal(SIGINT, SIG_DFL); 11160984da9fSeric (void) signal(SIGHUP, SIG_DFL); 11170984da9fSeric (void) signal(SIGTERM, SIG_DFL); 1118f129ec7dSeric umask(OldUmask); 1119f129ec7dSeric if (stat(filename, &stb) < 0) 1120e6e1265fSeric stb.st_mode = 0666; 1121f129ec7dSeric if (bitset(0111, stb.st_mode)) 1122f129ec7dSeric exit(EX_CANTCREAT); 112303827b5fSeric if (ctladdr == NULL) 11247a941e7aSeric ctladdr = &CurEnv->e_from; 1125f129ec7dSeric if (!bitset(S_ISGID, stb.st_mode) || setgid(stb.st_gid) < 0) 1126e36b99e2Seric { 1127e36b99e2Seric if (ctladdr->q_uid == 0) 1128e36b99e2Seric (void) setgid(DefGid); 1129e36b99e2Seric else 11306259796dSeric (void) setgid(ctladdr->q_gid); 1131e36b99e2Seric } 1132f129ec7dSeric if (!bitset(S_ISUID, stb.st_mode) || setuid(stb.st_uid) < 0) 1133e36b99e2Seric { 1134e36b99e2Seric if (ctladdr->q_uid == 0) 1135e36b99e2Seric (void) setuid(DefUid); 1136e36b99e2Seric else 11376259796dSeric (void) setuid(ctladdr->q_uid); 1138e36b99e2Seric } 113927628d59Seric f = dfopen(filename, "a"); 114025a99e2eSeric if (f == NULL) 114132d19d43Seric exit(EX_CANTCREAT); 114225a99e2eSeric 114377b52738Seric putfromline(f, ProgMailer); 114477b52738Seric (*CurEnv->e_puthdr)(f, ProgMailer, CurEnv); 114577b52738Seric putline("\n", f, ProgMailer); 114677b52738Seric (*CurEnv->e_putbody)(f, ProgMailer, CurEnv); 114777b52738Seric putline("\n", f, ProgMailer); 1148db8841e9Seric (void) fclose(f); 114932d19d43Seric (void) fflush(stdout); 1150e36b99e2Seric 115127628d59Seric /* reset ISUID & ISGID bits for paranoid systems */ 1152c77d1c25Seric (void) chmod(filename, (int) stb.st_mode); 115332d19d43Seric exit(EX_OK); 115413bbc08cSeric /*NOTREACHED*/ 115532d19d43Seric } 115632d19d43Seric else 115732d19d43Seric { 115832d19d43Seric /* parent -- wait for exit status */ 1159588cad61Seric int st; 116032d19d43Seric 1161588cad61Seric st = waitfor(pid); 1162588cad61Seric if ((st & 0377) != 0) 1163588cad61Seric return (EX_UNAVAILABLE); 1164588cad61Seric else 1165588cad61Seric return ((st >> 8) & 0377); 116632d19d43Seric } 116725a99e2eSeric } 1168ea4dc939Seric /* 1169ea4dc939Seric ** SENDALL -- actually send all the messages. 1170ea4dc939Seric ** 1171ea4dc939Seric ** Parameters: 11720c52a0b3Seric ** e -- the envelope to send. 1173276723a8Seric ** mode -- the delivery mode to use. 1174ea4dc939Seric ** 1175ea4dc939Seric ** Returns: 1176ea4dc939Seric ** none. 1177ea4dc939Seric ** 1178ea4dc939Seric ** Side Effects: 1179ea4dc939Seric ** Scans the send lists and sends everything it finds. 11800c52a0b3Seric ** Delivers any appropriate error messages. 1181276723a8Seric ** If we are running in a non-interactive mode, takes the 1182276723a8Seric ** appropriate action. 1183ea4dc939Seric */ 1184ea4dc939Seric 1185276723a8Seric sendall(e, mode) 11860c52a0b3Seric ENVELOPE *e; 1187276723a8Seric char mode; 1188ea4dc939Seric { 1189e77e673fSeric register ADDRESS *q; 119014a8ed7aSeric bool oldverbose; 1191276723a8Seric int pid; 1192ea4dc939Seric 1193772e6e50Seric #ifdef DEBUG 1194df864a8fSeric if (tTd(13, 1)) 1195772e6e50Seric { 1196276723a8Seric printf("\nSENDALL: mode %c, sendqueue:\n", mode); 11970c52a0b3Seric printaddr(e->e_sendqueue, TRUE); 1198772e6e50Seric } 1199772e6e50Seric #endif DEBUG 1200ea4dc939Seric 12010c52a0b3Seric /* 1202276723a8Seric ** Do any preprocessing necessary for the mode we are running. 1203588cad61Seric ** Check to make sure the hop count is reasonable. 1204588cad61Seric ** Delete sends to the sender in mailing lists. 1205276723a8Seric */ 1206276723a8Seric 1207588cad61Seric CurEnv = e; 1208276723a8Seric 1209588cad61Seric if (e->e_hopcount > MAXHOP) 1210276723a8Seric { 1211588cad61Seric syserr("sendall: too many hops (%d max)", MAXHOP); 1212588cad61Seric return; 1213588cad61Seric } 1214588cad61Seric 1215588cad61Seric if (!MeToo) 1216276723a8Seric { 1217588cad61Seric e->e_from.q_flags |= QDONTSEND; 1218588cad61Seric recipient(&e->e_from, &e->e_sendqueue); 1219276723a8Seric } 1220588cad61Seric 1221588cad61Seric # ifdef QUEUE 1222b254bcb6Seric if ((mode == SM_QUEUE || mode == SM_FORK || 1223b254bcb6Seric (mode != SM_VERIFY && SuperSafe)) && 1224b254bcb6Seric !bitset(EF_INQUEUE, e->e_flags)) 1225588cad61Seric queueup(e, TRUE, mode == SM_QUEUE); 1226276723a8Seric #endif QUEUE 1227276723a8Seric 1228276723a8Seric oldverbose = Verbose; 1229276723a8Seric switch (mode) 1230276723a8Seric { 1231276723a8Seric case SM_VERIFY: 1232276723a8Seric Verbose = TRUE; 1233276723a8Seric break; 1234276723a8Seric 1235276723a8Seric case SM_QUEUE: 1236b254bcb6Seric e->e_flags |= EF_INQUEUE|EF_KEEPQUEUE; 1237276723a8Seric return; 1238276723a8Seric 1239276723a8Seric case SM_FORK: 12409a6a5f55Seric if (e->e_xfp != NULL) 12419a6a5f55Seric (void) fflush(e->e_xfp); 1242276723a8Seric pid = fork(); 1243276723a8Seric if (pid < 0) 1244276723a8Seric { 1245276723a8Seric mode = SM_DELIVER; 1246276723a8Seric break; 1247276723a8Seric } 1248276723a8Seric else if (pid > 0) 1249a6fce3d8Seric { 1250a6fce3d8Seric /* be sure we leave the temp files to our child */ 1251b254bcb6Seric e->e_id = e->e_df = NULL; 1252276723a8Seric return; 1253a6fce3d8Seric } 1254276723a8Seric 1255276723a8Seric /* double fork to avoid zombies */ 1256276723a8Seric if (fork() > 0) 1257276723a8Seric exit(EX_OK); 1258276723a8Seric 1259a6fce3d8Seric /* be sure we are immune from the terminal */ 1260769e215aSeric disconnect(FALSE); 1261a6fce3d8Seric 1262276723a8Seric break; 1263276723a8Seric } 1264276723a8Seric 1265276723a8Seric /* 12660c52a0b3Seric ** Run through the list and send everything. 12670c52a0b3Seric */ 12680c52a0b3Seric 12690c52a0b3Seric for (q = e->e_sendqueue; q != NULL; q = q->q_next) 1270ea4dc939Seric { 1271276723a8Seric if (mode == SM_VERIFY) 1272ea4dc939Seric { 1273a6fce3d8Seric e->e_to = q->q_paddr; 1274e77e673fSeric if (!bitset(QDONTSEND|QBADADDR, q->q_flags)) 1275ea4dc939Seric message(Arpa_Info, "deliverable"); 1276ea4dc939Seric } 1277ea4dc939Seric else 1278588cad61Seric (void) deliver(e, q); 1279ea4dc939Seric } 128014a8ed7aSeric Verbose = oldverbose; 12810c52a0b3Seric 12820c52a0b3Seric /* 12830c52a0b3Seric ** Now run through and check for errors. 12840c52a0b3Seric */ 12850c52a0b3Seric 1286276723a8Seric if (mode == SM_VERIFY) 12870c52a0b3Seric return; 12880c52a0b3Seric 12890c52a0b3Seric for (q = e->e_sendqueue; q != NULL; q = q->q_next) 12900c52a0b3Seric { 12910c52a0b3Seric register ADDRESS *qq; 12920c52a0b3Seric 1293df864a8fSeric # ifdef DEBUG 1294df864a8fSeric if (tTd(13, 3)) 1295df864a8fSeric { 1296df864a8fSeric printf("Checking "); 1297df864a8fSeric printaddr(q, FALSE); 1298df864a8fSeric } 1299df864a8fSeric # endif DEBUG 1300df864a8fSeric 1301b254bcb6Seric /* only send errors if the message failed */ 1302b254bcb6Seric if (!bitset(QBADADDR, q->q_flags)) 1303b254bcb6Seric continue; 13040c52a0b3Seric 13050c52a0b3Seric /* we have an address that failed -- find the parent */ 13060c52a0b3Seric for (qq = q; qq != NULL; qq = qq->q_alias) 13070c52a0b3Seric { 13080c52a0b3Seric char obuf[MAXNAME + 6]; 13090c52a0b3Seric extern char *aliaslookup(); 13100c52a0b3Seric 13110c52a0b3Seric /* we can only have owners for local addresses */ 13120c52a0b3Seric if (!bitset(M_LOCAL, qq->q_mailer->m_flags)) 13130c52a0b3Seric continue; 13140c52a0b3Seric 13150c52a0b3Seric /* see if the owner list exists */ 13160c52a0b3Seric (void) strcpy(obuf, "owner-"); 1317cec031e3Seric if (strncmp(qq->q_user, "owner-", 6) == 0) 1318cec031e3Seric (void) strcat(obuf, "owner"); 1319cec031e3Seric else 13200c52a0b3Seric (void) strcat(obuf, qq->q_user); 13210c52a0b3Seric if (aliaslookup(obuf) == NULL) 13220c52a0b3Seric continue; 13230c52a0b3Seric 1324df864a8fSeric # ifdef DEBUG 1325df864a8fSeric if (tTd(13, 4)) 1326df864a8fSeric printf("Errors to %s\n", obuf); 1327df864a8fSeric # endif DEBUG 1328df864a8fSeric 13290c52a0b3Seric /* owner list exists -- add it to the error queue */ 1330e3e4ed86Seric sendtolist(obuf, (ADDRESS *) NULL, &e->e_errorqueue); 1331588cad61Seric ErrorMode == EM_MAIL; 13320c52a0b3Seric break; 13330c52a0b3Seric } 13340c52a0b3Seric 13350c52a0b3Seric /* if we did not find an owner, send to the sender */ 13367455aa0bSeric if (qq == NULL && bitset(QBADADDR, q->q_flags)) 1337e3e4ed86Seric sendtolist(e->e_from.q_paddr, qq, &e->e_errorqueue); 13380c52a0b3Seric } 1339276723a8Seric 1340276723a8Seric if (mode == SM_FORK) 1341276723a8Seric finis(); 13420c52a0b3Seric } 1343