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  1. http://code.dogmap.org./qmail/#realrcptto
  2.  
  3. Changes in version 2006.12.10:
  4. - For QMAILRRTENYALL, use error code 554 after DATA, not 550.  Thanks to
  5.   ... sorry, I lost track of who found this.
  6. - Log stat() errors for .qmail files.  Thanks to Chris Bensend for suggesting
  7.   this.
  8.  
  9. Changes in version 2006.10.26:
  10. - Logging uses substdio_puts() and substdio_flush() instead of
  11.   substdio_putsflush().  This makes log entries less likely to be
  12.   interleaved.  Thanks to Matthew Dempsky for finding this.
  13.  
  14. Changes in version 2004.09.14:
  15. - Strict syntax fix: a variable declaration was accidentally put among
  16.   statements instead of at the beginning of the block.
  17.  
  18. Changes in version 2004.08.30:
  19. - Added QMAILRRTDENYALL.
  20. - Cleanup: missing "break" for some switch statements (no visible behavior
  21.   changes AFAICT).  Thanks to Markus Stumpf for finding these.
  22.  
  23. Changes in version 2004.02.05:
  24. - Short-circuit speedup when "dash" is empty.
  25. - Move duplicated code into realrcptto.c.
  26. - Add logging of rejected addresses.
  27. - Verified inter-patchability with netqmail-1.05 and Russell Nelson's
  28.   qmail-smtpd-viruscan patch.
  29.  
  30. diff -Naur Makefile.orig Makefile
  31. --- Makefile.orig	1998-06-15 06:52:55.000000000 -0400
  32. +++ Makefile	2006-12-08 03:21:25.000000000 -0500
  33. @@ -1447,15 +1447,15 @@
  34.  	./compile qmail-qmqpd.c
  35.  
  36.  qmail-qmtpd: \
  37. -load qmail-qmtpd.o rcpthosts.o control.o constmap.o received.o \
  38. +load qmail-qmtpd.o realrcptto.o rcpthosts.o control.o constmap.o received.o \
  39.  date822fmt.o now.o qmail.o cdb.a fd.a wait.a datetime.a open.a \
  40.  getln.a sig.a case.a env.a stralloc.a alloc.a substdio.a error.a \
  41. -str.a fs.a auto_qmail.o dns.o ip.o ipalloc.o ipme.o byte_diff.o
  42. -	./load qmail-qmtpd rcpthosts.o control.o constmap.o \
  43. +str.a fs.a auto_qmail.o dns.o ip.o ipalloc.o ipme.o byte_diff.o auto_break.o auto_usera.o
  44. +	./load qmail-qmtpd realrcptto.o rcpthosts.o control.o constmap.o \
  45.  	received.o date822fmt.o now.o qmail.o cdb.a fd.a wait.a \
  46.  	datetime.a open.a getln.a sig.a case.a env.a stralloc.a \
  47. -	alloc.a substdio.a error.a fs.a auto_qmail.o dns.o \
  48. +	alloc.a substdio.a error.a fs.a auto_qmail.o dns.o auto_break.o auto_usera.o \
  49. 	`cat dns.lib` ip.o ipalloc.o ipme.o byte_diff.o str.a
  50.  
  51.  qmail-qmtpd.0: \
  52.  qmail-qmtpd.8
  53. @@ -1614,18 +1614,18 @@
  54.  	./compile qmail-showctl.c
  55.  
  56.  qmail-smtpd: \
  57. -load qmail-smtpd.o rcpthosts.o qregex.o commands.o timeoutread.o \
  58. +load qmail-smtpd.o realrcptto.o rcpthosts.o qregex.o commands.o timeoutread.o \
  59.  timeoutwrite.o ip.o ipme.o ipalloc.o control.o constmap.o received.o \
  60.  date822fmt.o now.o qmail.o cdb.a fd.a wait.a datetime.a getln.a \
  61.  open.a sig.a case.a env.a stralloc.a alloc.a strerr.a substdio.a error.a str.a \
  62. -fs.a auto_qmail.o base64.o qmail-spp.o socket.lib dns.o ip.o ipalloc.o
  63. -	./load qmail-smtpd qregex.o rcpthosts.o commands.o timeoutread.o \
  64. +fs.a auto_qmail.o base64.o qmail-spp.o auto_break.o auto_usera.o socket.lib dns.o ip.o ipalloc.o
  65. +	./load qmail-smtpd realrcptto.o qregex.o rcpthosts.o commands.o timeoutread.o \
  66.  	timeoutwrite.o ip.o ipme.o ipalloc.o control.o constmap.o \
  67.  	tls.o ssl_timeoutio.o ndelay.a -L/usr/local/ssl/lib -lssl -lcrypto \
  68.  	received.o date822fmt.o now.o qmail.o cdb.a fd.a wait.a \
  69.  	datetime.a getln.a open.a sig.a case.a qmail-spp.o env.a stralloc.a \
  70. -	alloc.a strerr.a substdio.a error.a fs.a auto_qmail.o base64.o  `cat \
  71. -	socket.lib` dns.o str.a `cat dns.lib`
  72. +	alloc.a strerr.a substdio.a error.a fs.a auto_qmail.o base64.o auto_break.o \
  73. +	auto_usera.o `cat socket.lib` dns.o str.a `cat dns.lib`
  74.  
  75.  qmail-smtpd.0: \
  76.  qmail-smtpd.8
  77. @@ -1774,6 +1774,11 @@
  78.  auto_split.h
  79.  	./compile readsubdir.c
  80.  
  81. +realrcptto.o: \
  82. +compile realrcptto.c auto_break.h auto_usera.h byte.h case.h cdb.h \
  83. +constmap.h error.h fmt.h open.h str.h stralloc.h uint32.h
  84. +	./compile realrcptto.c
  85. +
  86.  received.o: \
  87.  compile received.c fmt.h qmail.h substdio.h now.h datetime.h \
  88.  datetime.h date822fmt.h received.h
  89. diff -Naur qmail-qmtpd.c.orig qmail-qmtpd.c
  90. --- qmail-qmtpd.c.orig	1998-06-15 06:52:55.000000000 -0400
  91. +++ qmail-qmtpd.c	2006-12-08 03:21:25.000000000 -0500
  92. @@ -14,6 +14,15 @@
  93.  
  94.  void badproto() { _exit(100); }
  95.  void resources() { _exit(111); }
  96. +void die_nomem() { resources(); }
  97. +void die_control() { resources(); }
  98. +void die_cdb() { resources(); }
  99. +void die_sys() { resources(); }
  100. +
  101. +extern void realrcptto_init();
  102. +extern void realrcptto_start();
  103. +extern int realrcptto();
  104. +extern int realrcptto_deny();
  105.  
  106.  int safewrite(fd,buf,len) int fd; char *buf; int len;
  107.  {
  108. @@ -98,6 +107,8 @@
  109.    if (rcpthosts_init() == -1) resources();
  110.    relayclient = env_get("RELAYCLIENT");
  111.    relayclientlen = relayclient ? str_len(relayclient) : 0;
  112. +
  113. +  realrcptto_init();
  114.  
  115.    if (control_readint(&databytes,"control/databytes") == -1) resources();
  116.    x = env_get("DATABYTES");
  117. @@ -114,6 +125,7 @@
  118.    if (!local) local = "unknown";
  119.  
  120.    for (;;) {
  121. +    realrcptto_start();
  122.      if (!stralloc_copys(&failure,"")) resources();
  123.      flagsenderok = 1;
  124.  
  125. @@ -216,6 +228,10 @@
  126.              case -1: resources();
  127.              case 0: failure.s[failure.len - 1] = 'D';
  128.            }
  129. +
  130. +        if (!failure.s[failure.len - 1])
  131. +          if (!realrcptto(buf))
  132. +            failure.s[failure.len - 1] = 'D';
  133.  
  134.          if (!failure.s[failure.len - 1]) {
  135.            qmail_to(&qq,buf);
  136. @@ -231,6 +247,7 @@
  137.      result = qmail_close(&qq);
  138.      if (!flagsenderok) result = "Dunacceptable sender (#5.1.7)";
  139.      if (databytes) if (!bytestooverflow) result = "Dsorry, that message size exceeds my databytes limit (#5.3.4)";
  140. +    if (!relayclient && realrcptto_deny()) result = "Dsorry, no mailbox here by that name. (#5.1.1)\r\n";
  141.  
  142.      if (*result)
  143.        len = str_len(result);
  144. diff -Naur qmail-smtpd.c.orig qmail-smtpd.c
  145. --- qmail-smtpd.c.orig	1998-06-15 06:52:55.000000000 -0400
  146. +++ qmail-smtpd.c	2006-12-09 04:02:00.000000000 -0500
  147. @@ -111,12 +111,24 @@
  148.  void die_ipme()
  149.  {
  150.    enew(); eout("Unable to figure out my IP addresses!\n");
  151.    out("421 unable to figure out my IP addresses (#4.3.0)\r\n"); flush();
  152.    eflush(); _exit(1);
  153.  }
  154. +void die_cdb()
  155. +{
  156. +  enew(); eout("Unable to read cdb user database!\n");
  157. +  out("421 unable to read cdb user database (#4.3.0)\r\n"); flush();
  158. +  eflush(); _exit(1);
  159. +}
  160. +void die_sys()
  161. +{
  162. +  enew(); eout("Unable to read system user database!\n");
  163. +  out("421 unable to read system user database (#4.3.0)\r\n"); flush();
  164. +  eflush(); _exit(1);
  165. +}
  166.  void straynewline()
  167.  {
  168.    enew(); eout("Stray newline from "); eout(remoteip); eout(".\n");
  169.    out("451 See http://pobox.com/~djb/docs/smtplf.html.\r\n"); flush();
  170.    eflush(); _exit(1);
  171.  }
  172. @@ -161,6 +173,13 @@
  173.  int err_wantstarttls() { out("530 Must issue a STARTTLS command first (#5.7.0)\r\n"); return -1; };
  174.  void err_authfail() { out("535 authentication failed (#5.7.1)\r\n"); }
  175.  
  176. +extern void realrcptto_init();
  177. +extern void realrcptto_start();
  178. +extern int realrcptto();
  179. +extern int realrcptto_deny();
  180. +
  181. +int flagauth = 0;
  182. +
  183.  stralloc greeting = {0};
  184.  
  185.  void smtp_greet(code) char *code;
  186. @@ -259,7 +259,8 @@
  187.   fdmbrt = open_read("control/morebadrcptto.cdb");
  188.   if (fdmbrt == -1) if (errno != error_noent) die_control();
  189.  
  190.  
  191. +  realrcptto_init();
  192.  
  193.    if (control_readint(&databytes,"control/databytes") == -1) die_control();
  194.    x = env_get("DATABYTES");
  195. @@ -635,7 +635,8 @@
  196.    if (!stralloc_copys(&rcptto,"")) die_nomem();
  197.    if (!stralloc_copys(&mailfrom,addr.s)) die_nomem();
  198.    if (!stralloc_0(&mailfrom)) die_nomem();
  199. +  realrcptto_start();
  200.    recipcount = 0;
  201.    out("250 ok\r\n");
  202.  }
  203.  void smtp_rcpt(arg) char *arg; {
  204. @@ -680,5 +701,9 @@
  205.      flagbrt = 1;
  206.      log_deny("BAD RCPT TO", mailfrom.s,addr.s);
  207.    }
  208. +  if (!flagauth && !relayclient && !realrcptto(addr.s)) {
  209. +    out("554 sorry, no mailbox here by that name. (#5.1.1)\r\n");
  210. +    return;
  211. +  }
  212.    if (!(spp_val = spp_rcpt(allowed))) return;
  213.    if (!relayclient && spp_val == 1) {
  214. @@ -899,6 +899,7 @@
  215.    if (mailfrom.len == 1 && recipcount > 1) { err_badbounce(); return; }
  216.    if (flagbrt) { err_brt(); return; }
  217.    if (!spp_data()) return;
  218. +  if (!relayclient && realrcptto_deny()) { out("550 sorry, no mailbox here by that name. (#5.1.1)\r\n"); return; }
  219.    seenmail = 0;
  220.    if (databytes) bytestooverflow = databytes + 1;
  221.    if (qmail_open(&qqt) == -1) { err_qqt(); return; }
  222. @@ -961,6 +961,5 @@
  223.  static stralloc slop = {0};     /* b64 challenge */
  224.  #endif
  225.  
  226. -int flagauth = 0;
  227.  char **childargs;
  228.  char ssauthbuf[512];
  229. diff -Naur realrcptto.c.orig realrcptto.c
  230. --- realrcptto.c.orig	1969-12-31 19:00:00.000000000 -0500
  231. +++ realrcptto.c	2006-12-09 18:33:04.000000000 -0500
  232. @@ -0,0 +1,343 @@
  233. +#include <sys/types.h>
  234. +#include <sys/stat.h>
  235. +#include <unistd.h>
  236. +#include <pwd.h>
  237. +#include "auto_break.h"
  238. +#include "auto_usera.h"
  239. +#include "byte.h"
  240. +#include "case.h"
  241. +#include "cdb.h"
  242. +#include "constmap.h"
  243. +#include "error.h"
  244. +#include "fmt.h"
  245. +#include "open.h"
  246. +#include "str.h"
  247. +#include "stralloc.h"
  248. +#include "uint32.h"
  249. +#include "substdio.h"
  250. +#include "env.h"
  251. +
  252. +extern void die_nomem();
  253. +extern void die_control();
  254. +extern void die_cdb();
  255. +extern void die_sys();
  256. +
  257. +static stralloc envnoathost = {0};
  258. +static stralloc percenthack = {0};
  259. +static stralloc locals = {0};
  260. +static stralloc vdoms = {0};
  261. +static struct constmap mappercenthack;
  262. +static struct constmap maplocals;
  263. +static struct constmap mapvdoms;
  264. +
  265. +static char *dash;
  266. +static char *extension;
  267. +static char *local;
  268. +static struct passwd *pw;
  269. +
  270. +static char errbuf[128];
  271. +static struct substdio sserr = SUBSTDIO_FDBUF(write,2,errbuf,sizeof errbuf);
  272. +
  273. +static char pidbuf[64];
  274. +static char remoteipbuf[64]=" ";
  275. +
  276. +static int flagdenyall;
  277. +static int flagdenyany;
  278. +
  279. +void realrcptto_init()
  280. +{
  281. +  char *x;
  282. +
  283. +  if (control_rldef(&envnoathost,"control/envnoathost",1,"envnoathost") != 1)
  284. +    die_control();
  285. +
  286. +  if (control_readfile(&locals,"control/locals",1) != 1) die_control();
  287. +  if (!constmap_init(&maplocals,locals.s,locals.len,0)) die_nomem();
  288. +  switch(control_readfile(&percenthack,"control/percenthack",0)) {
  289. +    case -1: die_control();
  290. +    case 0: if (!constmap_init(&mappercenthack,"",0,0)) die_nomem();
  291. +    case 1:
  292. +      if (!constmap_init(&mappercenthack,percenthack.s,percenthack.len,0))
  293. +        die_nomem();
  294. +  }
  295. +  switch(control_readfile(&vdoms,"control/virtualdomains",0)) {
  296. +    case -1: die_control();
  297. +    case 0: if (!constmap_init(&mapvdoms,"",0,1)) die_nomem();
  298. +    case 1: if (!constmap_init(&mapvdoms,vdoms.s,vdoms.len,1)) die_nomem();
  299. +  }
  300. +
  301. +  str_copy(pidbuf + fmt_ulong(pidbuf,getpid())," ");
  302. +  x=env_get("PROTO");
  303. +  if (x) {
  304. +    static char const remoteip[]="REMOTEIP";
  305. +    unsigned int len = str_len(x);
  306. +    if (len <= sizeof remoteipbuf - sizeof remoteip) {
  307. +      byte_copy(remoteipbuf,len,x);
  308. +      byte_copy(remoteipbuf + len,sizeof remoteip,remoteip);
  309. +      x = env_get(remoteipbuf);
  310. +      len = str_len(x);
  311. +      if (len + 1 < sizeof remoteipbuf) {
  312. +        byte_copy(remoteipbuf,len,x);
  313. +        remoteipbuf[len]=' ';
  314. +        remoteipbuf[len + 1]='\0';
  315. +      }
  316. +    }
  317. +  }
  318. +
  319. +  x = env_get("QMAILRRTDENYALL");
  320. +  flagdenyall = (x && x[0]=='1' && x[1]=='\0');
  321. +}
  322. +
  323. +void realrcptto_start()
  324. +{
  325. +  flagdenyany = 0;
  326. +}
  327. +
  328. +static int denyaddr(addr)
  329. +char *addr;
  330. +{
  331. +  substdio_puts(&sserr,"realrcptto ");
  332. +  substdio_puts(&sserr,pidbuf);
  333. +  substdio_puts(&sserr,remoteipbuf);
  334. +  substdio_puts(&sserr,addr);
  335. +  substdio_puts(&sserr,"\n");
  336. +  substdio_flush(&sserr);
  337. +  flagdenyany = 1;
  338. +  return flagdenyall;
  339. +}
  340. +
  341. +static void stat_error(path,error)
  342. +char* path;
  343. +int error;
  344. +{
  345. +  substdio_puts(&sserr,"unable to stat ");
  346. +  substdio_puts(&sserr,path);
  347. +  substdio_puts(&sserr,": ");
  348. +  substdio_puts(&sserr,error_str(error));
  349. +  substdio_puts(&sserr,"\n");
  350. +  substdio_flush(&sserr);
  351. +}
  352. +
  353. +#define GETPW_USERLEN 32
  354. +
  355. +static int userext()
  356. +{
  357. +  char username[GETPW_USERLEN];
  358. +  struct stat st;
  359. +
  360. +  extension = local + str_len(local);
  361. +  for (;;) {
  362. +    if (extension - local < sizeof(username))
  363. +      if (!*extension || (*extension == *auto_break)) {
  364. +	byte_copy(username,extension - local,local);
  365. +	username[extension - local] = 0;
  366. +	case_lowers(username);
  367. +	errno = 0;
  368. +	pw = getpwnam(username);
  369. +	if (errno == error_txtbsy) die_sys();
  370. +	if (pw)
  371. +	  if (pw->pw_uid)
  372. +	    if (stat(pw->pw_dir,&st) == 0) {
  373. +	      if (st.st_uid == pw->pw_uid) {
  374. +		dash = "";
  375. +		if (*extension) { ++extension; dash = "-"; }
  376. +		return 1;
  377. +	      }
  378. +	    }
  379. +	    else
  380. +	      if (error_temp(errno)) die_sys();
  381. +      }
  382. +    if (extension == local) return 0;
  383. +    --extension;
  384. +  }
  385. +}
  386. +
  387. +int realrcptto(addr)
  388. +char *addr;
  389. +{
  390. +  char *homedir;
  391. +  static stralloc localpart = {0};
  392. +  static stralloc lower = {0};
  393. +  static stralloc nughde = {0};
  394. +  static stralloc wildchars = {0};
  395. +  static stralloc safeext = {0};
  396. +  static stralloc qme = {0};
  397. +  unsigned int i,at;
  398. +
  399. +  /* Short circuit, or full logging?  Short circuit. */
  400. +  if (flagdenyall && flagdenyany) return 1;
  401. +
  402. +  /* qmail-send:rewrite */
  403. +  if (!stralloc_copys(&localpart,addr)) die_nomem();
  404. +  i = byte_rchr(localpart.s,localpart.len,'@');
  405. +  if (i == localpart.len) {
  406. +    if (!stralloc_cats(&localpart,"@")) die_nomem();
  407. +    if (!stralloc_cat(&localpart,&envnoathost)) die_nomem();
  408. +  }
  409. +  while (constmap(&mappercenthack,localpart.s + i + 1,localpart.len - i - 1)) {
  410. +    unsigned int j = byte_rchr(localpart.s,i,'%');
  411. +    if (j == i) break;
  412. +    localpart.len = i;
  413. +    i = j;
  414. +    localpart.s[i] = '@';
  415. +  }
  416. +  at = byte_rchr(localpart.s,localpart.len,'@');
  417. +  if (constmap(&maplocals,localpart.s + at + 1,localpart.len - at - 1)) {
  418. +    localpart.len = at;
  419. +    localpart.s[at] = '\0';
  420. +  } else {
  421. +    unsigned int xlen,newlen;
  422. +    char *x;
  423. +    for (i = 0;;++i) {
  424. +      if (i > localpart.len) return denyaddr(addr);
  425. +      if (!i || (i == at + 1) || (i == localpart.len) ||
  426. +          ((i > at) && (localpart.s[i] == '.'))) {
  427. +        x = constmap(&mapvdoms,localpart.s + i,localpart.len - i);
  428. +        if (x && i == at + 1) {
  429. +          char *qmailqueue;
  430. +          qmailqueue = env_get("QMAILQUEUE");
  431. +          if (qmailqueue) {
  432. +            if (!env_put("QMAILQUEUE=bin/qmail-queue")) die_nomem();
  433. +          }
  434. +        }
  435. +        if (x) break;
  436. +      }
  437. +    }
  438. +    if (!*x) return 1;
  439. +    xlen = str_len(x) + 1;  /* +1 for '-' */
  440. +    newlen = xlen + at + 1; /* +1 for \0 */
  441. +    if (xlen < 1 || newlen - 1 < xlen || newlen < 1 ||
  442. +        !stralloc_ready(&localpart,newlen))
  443. +      die_nomem();
  444. +    localpart.s[newlen - 1] = '\0';
  445. +    byte_copyr(localpart.s + xlen,at,localpart.s);
  446. +    localpart.s[xlen - 1] = '-';
  447. +    byte_copy(localpart.s,xlen - 1,x);
  448. +    localpart.len = newlen;
  449. +  }
  450. +
  451. +  /* qmail-lspawn:nughde_get */
  452. +  {
  453. +    int r,fd,flagwild;
  454. +    if (!stralloc_copys(&lower,"!")) die_nomem();
  455. +    if (!stralloc_cats(&lower,localpart.s)) die_nomem();
  456. +    if (!stralloc_0(&lower)) die_nomem();
  457. +    case_lowerb(lower.s,lower.len);
  458. +    if (!stralloc_copys(&nughde,"")) die_nomem();
  459. +    fd = open_read("users/cdb");
  460. +    if (fd == -1) {
  461. +      if (errno != error_noent) die_cdb();
  462. +    } else {
  463. +      uint32 dlen;
  464. +      r = cdb_seek(fd,"",0,&dlen);
  465. +      if (r != 1) die_cdb();
  466. +      if (!stralloc_ready(&wildchars,(unsigned int) dlen)) die_nomem();
  467. +      wildchars.len = dlen;
  468. +      if (cdb_bread(fd,wildchars.s,wildchars.len) == -1) die_cdb();
  469. +      i = lower.len;
  470. +      flagwild = 0;
  471. +      do { /* i > 0 */
  472. +        if (!flagwild || (i == 1) ||
  473. +            (byte_chr(wildchars.s,wildchars.len,lower.s[i - 1])
  474. +             < wildchars.len)) {
  475. +          r = cdb_seek(fd,lower.s,i,&dlen);
  476. +          if (r == -1) die_cdb();
  477. +          if (r == 1) {
  478. +            char *x;
  479. +            if (!stralloc_ready(&nughde,(unsigned int) dlen)) die_nomem();
  480. +            nughde.len = dlen;
  481. +            if (cdb_bread(fd,nughde.s,nughde.len) == -1) die_cdb();
  482. +            if (flagwild)
  483. +              if (!stralloc_cats(&nughde,localpart.s + i - 1)) die_nomem();
  484. +            if (!stralloc_0(&nughde)) die_nomem();
  485. +            close(fd);
  486. +            x=nughde.s;
  487. +            /* skip username */
  488. +            x += byte_chr(x,nughde.s + nughde.len - x,'\0');
  489. +            if (x == nughde.s + nughde.len) return 1;
  490. +            ++x;
  491. +            /* skip uid */
  492. +            x += byte_chr(x,nughde.s + nughde.len - x,'\0');
  493. +            if (x == nughde.s + nughde.len) return 1;
  494. +            ++x;
  495. +            /* skip gid */
  496. +            x += byte_chr(x,nughde.s + nughde.len - x,'\0');
  497. +            if (x == nughde.s + nughde.len) return 1;
  498. +            ++x;
  499. +            /* skip homedir */
  500. +            homedir=x;
  501. +            x += byte_chr(x,nughde.s + nughde.len - x,'\0');
  502. +            if (x == nughde.s + nughde.len) return 1;
  503. +            ++x;
  504. +            /* skip dash */
  505. +            dash=x;
  506. +            x += byte_chr(x,nughde.s + nughde.len - x,'\0');
  507. +            if (x == nughde.s + nughde.len) return 1;
  508. +            ++x;
  509. +            extension=x;
  510. +            goto got_nughde;
  511. +          }
  512. +        }
  513. +        --i;
  514. +        flagwild = 1;
  515. +      } while (i);
  516. +      close(fd);
  517. +    }
  518. +  }
  519. +
  520. +  /* qmail-getpw */
  521. +  local = localpart.s;
  522. +  if (!userext()) {
  523. +    extension = local;
  524. +    dash = "-";
  525. +    pw = getpwnam(auto_usera);
  526. +  }
  527. +  if (!pw) return denyaddr(addr);
  528. +  if (!stralloc_copys(&nughde,pw->pw_dir)) die_nomem();
  529. +  if (!stralloc_0(&nughde)) die_nomem();
  530. +  homedir=nughde.s;
  531. +
  532. +  got_nughde:
  533. +
  534. +  /* qmail-local:qmesearch */
  535. +  if (!*dash) return 1;
  536. +  if (!stralloc_copys(&safeext,extension)) die_nomem();
  537. +  case_lowerb(safeext.s,safeext.len);
  538. +  for (i = 0;i < safeext.len;++i)
  539. +    if (safeext.s[i] == '.')
  540. +      safeext.s[i] = ':';
  541. +  {
  542. +    struct stat st;
  543. +    int i;
  544. +    if (!stralloc_copys(&qme,homedir)) die_nomem();
  545. +    if (!stralloc_cats(&qme,"/.qmail")) die_nomem();
  546. +    if (!stralloc_cats(&qme,dash)) die_nomem();
  547. +    if (!stralloc_cat(&qme,&safeext)) die_nomem();
  548. +    if (!stralloc_0(&qme)) die_nomem();
  549. +    if (stat(qme.s,&st) == 0) return 1;
  550. +    if (errno != error_noent) {
  551. +      stat_error(qme.s,errno);
  552. +      return 1;
  553. +    }
  554. +    for (i = safeext.len;i >= 0;--i)
  555. +      if (!i || (safeext.s[i - 1] == '-')) {
  556. +        if (!stralloc_copys(&qme,homedir)) die_nomem();
  557. +        if (!stralloc_cats(&qme,"/.qmail")) die_nomem();
  558. +        if (!stralloc_cats(&qme,dash)) die_nomem();
  559. +        if (!stralloc_catb(&qme,safeext.s,i)) die_nomem();
  560. +        if (!stralloc_cats(&qme,"default")) die_nomem();
  561. +        if (!stralloc_0(&qme)) die_nomem();
  562. +        if (stat(qme.s,&st) == 0) return 1;
  563. +        if (errno != error_noent) {
  564. +          stat_error(qme.s,errno);
  565. +          return 1;
  566. +        }
  567. +      }
  568. +    return denyaddr(addr);
  569. +  }
  570. +}
  571. +
  572. +int realrcptto_deny()
  573. +{
  574. +  return flagdenyall && flagdenyany;
  575. +}
  576.