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-rw-r--r--sqmail-4.3.07/src/qmail-send.c1440
1 files changed, 0 insertions, 1440 deletions
diff --git a/sqmail-4.3.07/src/qmail-send.c b/sqmail-4.3.07/src/qmail-send.c
deleted file mode 100644
index fa241bf..0000000
--- a/sqmail-4.3.07/src/qmail-send.c
+++ /dev/null
@@ -1,1440 +0,0 @@
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <string.h>
-#include <unistd.h>
-#include <utime.h>
-#include "error.h"
-#include "sig.h"
-#include "direntry.h"
-#include "control.h"
-#include "select.h"
-#include "open.h"
-#include "seek.h"
-#include "exit.h"
-#include "lock.h"
-#include "ndelay.h"
-#include "now.h"
-#include "getln.h"
-#include "buffer.h"
-#include "alloc.h"
-#include "genalloc.h"
-#include "stralloc.h"
-#include "logmsg.h"
-#include "str.h"
-#include "byte.h"
-#include "fmt.h"
-#include "scan.h"
-#include "case.h"
-#include "auto_qmail.h"
-#include "trigger.h"
-#include "newfield.h"
-#include "quote.h"
-#include "qmail.h"
-#include "qsutil.h"
-#include "prioq.h"
-#include "constmap.h"
-#include "fmtqfn.h"
-#include "readsubdir.h"
-#include "sendtodo.h"
-
-int lifetime = 604800;
-int bouncemaxbytes = 0;
-
-stralloc percenthack = {0};
-struct constmap mappercenthack;
-stralloc locals = {0};
-struct constmap maplocals;
-stralloc vdoms = {0};
-struct constmap mapvdoms;
-stralloc envnoathost = {0};
-stralloc bouncefrom = {0};
-stralloc bouncehost = {0};
-stralloc doublebounceto = {0};
-stralloc doublebouncehost = {0};
-
-char strnum2[FMT_ULONG];
-char strnum3[FMT_ULONG];
-
-#define CHANNELS 2
-char *chanaddr[CHANNELS] = { "local/", "remote/" };
-char *chanstatusmsg[CHANNELS] = { " local ", " remote " };
-char *tochan[CHANNELS] = { " to local ", " to remote " };
-int chanfdout[CHANNELS] = { 1, 3 };
-int chanfdin[CHANNELS] = { 2, 4 };
-int chanskip[CHANNELS] = { 10, 20 };
-
-int flagexitasap = 0; void sigterm() { flagexitasap = 1; }
-int flagrunasap = 0; void sigalrm() { flagrunasap = 1; }
-int flagreadasap = 0; void sighup() { flagreadasap = 1; }
-
-void cleandied()
-{
- log1s("alert: lost connection to qmail-clean ... exiting\n");
- flagexitasap = 1;
-}
-
-int flagspawnalive[CHANNELS];
-
-void spawndied(int c)
-{
- log1s("alert: oh no! lost spawn connection! dying...\n");
- flagspawnalive[c] = 0;
- flagexitasap = 1;
-}
-
-#define REPORTMAX 10000
-
-datetime_sec recent;
-
-
-/* this file is too long ---------------------------------------- FILE CREATE */
-
-stralloc fn = {0};
-stralloc fn2 = {0};
-char fnmake_strnum[FMT_ULONG];
-
-void fnmake_init()
-{
- while (!stralloc_ready(&fn,FMTQFN)) nomem();
- while (!stralloc_ready(&fn2,FMTQFN)) nomem();
-}
-
-void fnmake_info(unsigned long id) { fn.len = fmtqfn(fn.s,"info/",id,1); }
-void fnmake_todo(unsigned long id) { fn.len = fmtqfn(fn.s,"todo/",id,1); }
-void fnmake_mess(unsigned long id) { fn.len = fmtqfn(fn.s,"mess/",id,1); }
-void fnmake_foop(unsigned long id) { fn.len = fmtqfn(fn.s,"foop/",id,0); }
-void fnmake_split(unsigned long id) { fn.len = fmtqfn(fn.s,"",id,1); }
-void fnmake2_bounce(unsigned long id) { fn2.len = fmtqfn(fn2.s,"bounce/",id,0); }
-void fnmake_chanaddr(unsigned long id,int c) { fn.len = fmtqfn(fn.s,chanaddr[c],id,1); }
-
-
-/* this file is too long ----------------------------------------- REWRITING */
-
-void senderadd(stralloc *sa,char *sender,char *recip)
-{
- int i;
- int j;
- int k;
-
- i = str_len(sender);
- if (i >= 4)
- if (str_equal(sender + i - 4,"-@[]")) {
- j = byte_rchr(sender,i - 4,'@');
- k = str_rchr(recip,'@');
- if (recip[k] && (j + 5 <= i)) {
- /* owner-@host-@[] -> owner-recipbox=reciphost@host */
- while (!stralloc_catb(sa,sender,j)) nomem();
- while (!stralloc_catb(sa,recip,k)) nomem();
- while (!stralloc_cats(sa,"=")) nomem();
- while (!stralloc_cats(sa,recip + k + 1)) nomem();
- while (!stralloc_cats(sa,"@")) nomem();
- while (!stralloc_catb(sa,sender + j + 1,i - 5 - j)) nomem();
- return;
- }
- }
- while (!stralloc_cats(sa,sender)) nomem();
-}
-
-
-/* this file is too long ---------------------------------------------- INFO */
-
-int getinfo(stralloc *sa,datetime_sec *dt,unsigned long id)
-{
- int fdnumber;
- struct stat st;
- static stralloc line = {0};
- int match;
- char buf[128];
- buffer b;
-
- fnmake_info(id);
- fdnumber = open_read(fn.s);
- if (fdnumber == -1) return 0;
- if (fstat(fdnumber,&st) == -1) { close(fdnumber); return 0; }
- buffer_init(&b,read,fdnumber,buf,sizeof(buf));
- if (getln(&b,&line,&match,'\0') == -1) { close(fdnumber); return 0; }
- close(fdnumber);
- if (!match) return 0;
- if (line.s[0] != 'F') return 0;
-
- *dt = st.st_mtime;
- while (!stralloc_copys(sa,line.s + 1)) nomem();
- while (!stralloc_0(sa)) nomem();
- return 1;
-}
-
-
-/* this file is too long ------------------------------------- COMMUNICATION */
-
-buffer toqc; char toqcbuf[1024];
-buffer fromqc; char fromqcbuf[1024];
-stralloc comm_buf[CHANNELS] = { {0}, {0} };
-int comm_pos[CHANNELS];
-
-void comm_init()
-{
- int c;
-
- buffer_init(&toqc,write,5,toqcbuf,sizeof(toqcbuf));
- buffer_init(&fromqc,read,6,fromqcbuf,sizeof(fromqcbuf));
- for (c = 0; c < CHANNELS; ++c)
- if (ndelay_on(chanfdout[c]) == -1)
- /* this is so stupid: NDELAY semantics should be default on write */
- spawndied(c); /* drastic, but better than risking deadlock */
-}
-
-int comm_canwrite(int c)
-{
- /* XXX: could allow a bigger buffer; say 10 recipients */
- if (comm_buf[c].s && comm_buf[c].len) return 0;
- return 1;
-}
-
-void comm_write(int c,int delnum,unsigned long id,char *sender,char *recip)
-{
- char ch;
-
- if (comm_buf[c].s && comm_buf[c].len) return;
- while (!stralloc_copys(&comm_buf[c],"")) nomem();
- ch = delnum;
- while (!stralloc_append(&comm_buf[c],&ch)) nomem();
- fnmake_split(id);
- while (!stralloc_cats(&comm_buf[c],fn.s)) nomem();
- while (!stralloc_0(&comm_buf[c])) nomem();
- senderadd(&comm_buf[c],sender,recip);
- while (!stralloc_0(&comm_buf[c])) nomem();
- while (!stralloc_cats(&comm_buf[c],recip)) nomem();
- while (!stralloc_0(&comm_buf[c])) nomem();
- comm_pos[c] = 0;
-}
-
-void comm_selprep(int *nfds,fd_set *wfds)
-{
- int c;
-
- for (c = 0; c < CHANNELS; ++c)
- if (flagspawnalive[c])
- if (comm_buf[c].s && comm_buf[c].len) {
- FD_SET(chanfdout[c],wfds);
- if (*nfds <= chanfdout[c])
- *nfds = chanfdout[c] + 1;
- }
-}
-
-void comm_do(fd_set *wfds)
-{
- int c;
-
- for (c = 0; c < CHANNELS; ++c)
- if (flagspawnalive[c])
- if (comm_buf[c].s && comm_buf[c].len)
- if (FD_ISSET(chanfdout[c],wfds)) {
- int w;
- int len;
- len = comm_buf[c].len;
-
- w = write(chanfdout[c],comm_buf[c].s + comm_pos[c],len - comm_pos[c]);
- if (w <= 0) {
- if ((w == -1) && (errno == EPIPE))
- spawndied(c);
- else
- continue; /* kernel select() bug; can't avoid busy-looping */
- } else {
- comm_pos[c] += w;
- if (comm_pos[c] == len)
- comm_buf[c].len = 0;
- }
- }
-}
-
-
-/* this file is too long ------------------------------------------ CLEANUPS */
-
-int flagcleanup; /* if 1, cleanupdir is initialized and ready */
-readsubdir cleanupdir;
-datetime_sec cleanuptime;
-
-void cleanup_init()
-{
- flagcleanup = 0;
- cleanuptime = now();
-}
-
-void cleanup_selprep(datetime_sec *wakeup)
-{
- if (flagcleanup) *wakeup = 0;
- if (*wakeup > cleanuptime) *wakeup = cleanuptime;
-}
-
-void cleanup_do()
-{
- char ch;
- struct stat st;
- unsigned long id;
-
- if (!flagcleanup) {
- if (recent < cleanuptime) return;
- readsubdir_init(&cleanupdir,"mess",pausedir);
- flagcleanup = 1;
- }
-
- switch (readsubdir_next(&cleanupdir,&id)) {
- case 1: break;
- case 0: flagcleanup = 0; cleanuptime = recent + SLEEP_CLEANUP;
- default: return;
- }
-
- fnmake_mess(id);
- if (stat(fn.s,&st) == -1) return; /* probably qmail-queue deleted it */
- if (recent <= st.st_atime + OSSIFIED) return;
-
- fnmake_info(id);
- if (stat(fn.s,&st) == 0) return;
- if (errno != ENOENT) return;
-
- fnmake_todo(id);
- if (stat(fn.s,&st) == 0) return;
- if (errno != ENOENT) return;
-
- fnmake_foop(id);
- if (buffer_putflush(&toqc,fn.s,fn.len) == -1) { cleandied(); return; }
- if (buffer_get(&fromqc,&ch,1) != 1) { cleandied(); return; }
- if (ch != '+')
- log3s("warning: qmail-clean unable to clean up ",fn.s,"\n");
-}
-
-
-/* this file is too long ----------------------------------- PRIORITY QUEUES */
-
-prioq pqdone = {0}; /* -todo +info; HOPEFULLY -local -remote */
-prioq pqchan[CHANNELS] = { {0}, {0} };
-/* pqchan 0: -todo +info +local ?remote */
-/* pqchan 1: -todo +info ?local +remote */
-prioq pqfail = {0}; /* stat() failure; has to be pqadded again */
-
-void pqadd(unsigned long id)
-{
- struct prioq_elt pe;
- struct prioq_elt pechan[CHANNELS];
- int flagchan[CHANNELS];
- struct stat st;
- int c;
-
-#define CHECKSTAT if (errno != ENOENT) goto FAIL;
-
- fnmake_info(id);
- if (stat(fn.s,&st) == -1) {
- CHECKSTAT
- return; /* someone yanking our chain */
- }
-
- fnmake_todo(id);
- if (stat(fn.s,&st) != -1) return; /* look, ma, dad crashed writing info! */
- CHECKSTAT
-
- for (c = 0; c < CHANNELS; ++c) {
- fnmake_chanaddr(id,c);
- if (stat(fn.s,&st) == -1) { flagchan[c] = 0; CHECKSTAT }
- else { flagchan[c] = 1; pechan[c].id = id; pechan[c].dt = st.st_mtime; }
- }
-
- for (c = 0; c < CHANNELS; ++c)
- if (flagchan[c])
- while (!prioq_insert(&pqchan[c],&pechan[c])) nomem();
-
- for (c = 0; c < CHANNELS; ++c)
- if (flagchan[c]) break;
-
- if (c == CHANNELS) {
- pe.id = id; pe.dt = now();
- while (!prioq_insert(&pqdone,&pe)) nomem();
- }
-
- return;
-
- FAIL:
- log3s("warning: unable to stat ",fn.s,"; will try again later\n");
- pe.id = id; pe.dt = now() + SLEEP_SYSFAIL;
- while (!prioq_insert(&pqfail,&pe)) nomem();
-}
-
-void pqstart()
-{
- readsubdir rs;
- int x;
- unsigned long id;
-
- readsubdir_init(&rs,"info",pausedir);
-
- while ((x = readsubdir_next(&rs,&id)))
- if (x > 0) pqadd(id);
-}
-
-void pqfinish()
-{
- int c;
- struct prioq_elt pe;
- time_t ut[2]; /* XXX: more portable than utimbuf, but still worrisome */
-
- for (c = 0; c < CHANNELS; ++c)
- while (prioq_min(&pqchan[c],&pe)) {
- prioq_delmin(&pqchan[c]);
- fnmake_chanaddr(pe.id,c);
- ut[0] = ut[1] = pe.dt;
- if (utime(fn.s,ut) == -1)
- log3s("warning: unable to utime ",fn.s,"; message will be retried too soon\n");
- }
-}
-
-void pqrun()
-{
- int c;
- int i;
-
- for (c = 0; c < CHANNELS; ++c)
- if (pqchan[c].p)
- if (pqchan[c].len)
- for (i = 0; i < pqchan[c].len; ++i)
- pqchan[c].p[i].dt = recent;
-}
-
-
-/* this file is too long ---------------------------------------------- JOBS */
-
-struct job
-{
- int refs; /* if 0, this struct is unused */
- unsigned long id;
- int channel;
- datetime_sec retry;
- stralloc sender;
- int numtodo;
- int flaghiteof;
- int flagdying;
-};
-
-int numjobs;
-struct job *jo;
-
-void job_init()
-{
- int j;
-
- while (!(jo = (struct job *) alloc(numjobs * sizeof(struct job)))) nomem();
- for (j = 0; j < numjobs; ++j) {
- jo[j].refs = 0;
- jo[j].sender.s = 0;
- }
-}
-
-int job_avail()
-{
- int j;
-
- for (j = 0; j < numjobs; ++j)
- if (!jo[j].refs) return 1;
- return 0;
-}
-
-int job_open(unsigned long id,int channel)
-{
- int j;
-
- for (j = 0; j < numjobs; ++j)
- if (!jo[j].refs) break;
- if (j == numjobs) return -1;
- jo[j].refs = 1;
- jo[j].id = id;
- jo[j].channel = channel;
- jo[j].numtodo = 0;
- jo[j].flaghiteof = 0;
- return j;
-}
-
-void job_close(int j)
-{
- struct prioq_elt pe;
- struct stat st;
- int c;
-
- if (0 < --jo[j].refs) return;
-
- pe.id = jo[j].id;
- pe.dt = jo[j].retry;
-
- if (jo[j].flaghiteof && !jo[j].numtodo) {
- fnmake_chanaddr(jo[j].id,jo[j].channel);
- if (unlink(fn.s) == -1) {
- log3s("warning: unable to unlink ",fn.s,"; will try again later\n");
- pe.dt = now() + SLEEP_SYSFAIL;
- } else {
- for (c = 0; c < CHANNELS; ++c) if (c != jo[j].channel) {
- fnmake_chanaddr(jo[j].id,c);
- if (stat(fn.s,&st) == 0) return; /* more channels going */
- if (errno != ENOENT) {
- log3s("warning: unable to stat ",fn.s,"\n");
- break; /* this is the only reason for HOPEFULLY */
- }
- }
- pe.dt = now();
- while (!prioq_insert(&pqdone,&pe)) nomem();
- return;
- }
- }
-
- while (!prioq_insert(&pqchan[jo[j].channel],&pe)) nomem();
-}
-
-
-/* this file is too long ------------------------------------------- BOUNCES */
-
-char *stripvdomprepend(char *recip)
-{
- int i;
- char *domain;
- int domainlen;
- char *prepend;
-
- i = str_rchr(recip,'@');
- if (!recip[i]) return recip;
- domain = recip + i + 1;
- domainlen = str_len(domain);
-
- for (i = 0; i <= domainlen; ++i)
- if ((i == 0) || (i == domainlen) || (domain[i] == '.'))
- if ((prepend = constmap(&mapvdoms,domain + i,domainlen - i))) {
- if (!*prepend) break;
- i = str_len(prepend);
- if (str_diffn(recip,prepend,i)) break;
- if (recip[i] != '-') break;
- return recip + i + 1;
- }
-
- return recip;
-}
-
-stralloc bouncetext = {0};
-
-void addbounce(unsigned long id,char *recip,char *report)
-{
- int fd;
- int pos;
- int w;
-
- while (!stralloc_copys(&bouncetext,"<")) nomem();
- while (!stralloc_cats(&bouncetext,stripvdomprepend(recip))) nomem();
-
- for (pos = 0; pos < bouncetext.len; ++pos)
- if (bouncetext.s[pos] == '\n')
- bouncetext.s[pos] = '_';
-
- while (!stralloc_cats(&bouncetext,">:\n")) nomem();
- while (!stralloc_cats(&bouncetext,report)) nomem();
-
- if (report[0])
- if (report[str_len(report) - 1] != '\n')
- while (!stralloc_cats(&bouncetext,"\n")) nomem();
-
- for (pos = bouncetext.len - 2; pos > 0; --pos)
- if (bouncetext.s[pos] == '\n')
- if (bouncetext.s[pos - 1] == '\n')
- bouncetext.s[pos] = '/';
-
- while (!stralloc_cats(&bouncetext,"\n")) nomem();
- fnmake2_bounce(id);
-
- for (;;) {
- fd = open_append(fn2.s);
- if (fd != -1) break;
- log1s("alert: unable to append to bounce message; HELP! sleeping...\n");
- sleep(10);
- }
-
- pos = 0;
-
- while (pos < bouncetext.len) {
- w = write(fd,bouncetext.s + pos,bouncetext.len - pos);
- if (w <= 0) {
- log1s("alert: unable to append to bounce message; HELP! sleeping...\n");
- sleep(10);
- }
- else
- pos += w;
- }
- close(fd);
-}
-
-int injectbounce(unsigned long id)
-{
- struct qmail qqt;
- struct stat st;
- char *bouncesender;
- char *bouncerecip;
- int r;
- int fd;
- buffer bi;
- char buf[128];
- char inbuf[128];
- static stralloc sender = {0};
- static stralloc quoted = {0};
- datetime_sec birth;
- unsigned long qp;
- int bytestogo;
- int bytestoget;
-
- if (!getinfo(&sender,&birth,id)) return 0; /* XXX: print warning */
-
- /* owner-@host-@[] -> owner-@host */
- if (sender.len >= 5)
- if (str_equal(sender.s + sender.len - 5,"-@[]")) {
- sender.len -= 4;
- sender.s[sender.len - 1] = 0;
- }
-
- fnmake2_bounce(id);
- fnmake_mess(id);
-
- if (stat(fn2.s,&st) == -1) {
- if (errno == ENOENT) return 1;
- log3s("warning: unable to stat ",fn2.s,"\n");
- return 0;
- }
-
- if (str_equal(sender.s,"#@[]"))
- log3s("triple bounce: discarding ",fn2.s,"\n");
- else if (!*sender.s && *doublebounceto.s == '@')
- log3s("double bounce: discarding ",fn2.s,"\n");
- else {
- if (qmail_open(&qqt) == -1)
- { log1s("warning: unable to start qmail-queue, will try later\n"); return 0; }
- qp = qmail_qp(&qqt);
-
- if (*sender.s) { bouncesender = ""; bouncerecip = sender.s; }
- else { bouncesender = "#@[]"; bouncerecip = doublebounceto.s; }
-
- while (!newfield_datemake(now())) nomem();
- qmail_put(&qqt,newfield_date.s,newfield_date.len);
- qmail_puts(&qqt,"From: ");
- while (!quote(&quoted,&bouncefrom)) nomem();
- qmail_put(&qqt,quoted.s,quoted.len);
- qmail_puts(&qqt,"@");
- qmail_put(&qqt,bouncehost.s,bouncehost.len);
- qmail_puts(&qqt,"\nTo: ");
- while (!quote2(&quoted,bouncerecip)) nomem();
- qmail_put(&qqt,quoted.s,quoted.len);
- qmail_puts(&qqt,"\n\
-Subject: failure notice\n\
-\n\
-Hi. This is the qmail-send program at ");
- qmail_put(&qqt,bouncehost.s,bouncehost.len);
- qmail_puts(&qqt,*sender.s ? ".\n\
-I'm afraid I wasn't able to deliver your message to the following addresses.\n\
-This is a permanent error; I've given up. Sorry it didn't work out.\n\
-\n\
-" : ".\n\
-I tried to deliver a bounce message to this address, but the bounce bounced!\n\
-\n\
-");
-
- fd = open_read(fn2.s);
- if (fd == -1)
- qmail_fail(&qqt);
- else {
- buffer_init(&bi,read,fd,inbuf,sizeof(inbuf));
- while ((r = buffer_get(&bi,buf,sizeof(buf))) > 0)
- qmail_put(&qqt,buf,r);
-
- close(fd);
- if (r == -1) qmail_fail(&qqt);
- }
-
- qmail_puts(&qqt,*sender.s ? "--- Below this line is a copy of the message.\n\n" : "--- Below this line is the original bounce.\n\n");
- qmail_puts(&qqt,"Return-Path: <");
- while (!quote2(&quoted,sender.s)) nomem();
- qmail_put(&qqt,quoted.s,quoted.len);
- qmail_puts(&qqt,">\n");
-
- fd = open_read(fn.s);
- if (fd == -1)
- qmail_fail(&qqt);
- else {
- if (bouncemaxbytes) {
- bytestogo = bouncemaxbytes;
- bytestoget = (bytestogo < sizeof(buf)) ? bytestogo : sizeof(buf);
-
- buffer_init(&bi,read,fd,inbuf,sizeof(inbuf));
-
- while (bytestoget > 0 && (r = buffer_get(&bi,buf,bytestoget)) > 0) {
- qmail_put(&qqt,buf,r);
- bytestogo -= bytestoget;
- bytestoget = (bytestogo < sizeof(buf)) ? bytestogo : sizeof(buf);
- }
- if (r > 0)
- qmail_puts(&qqt,"\n\n--- Rest of message truncated.\n");
- } else { /* preserve default behavior */
- buffer_init(&bi,read,fd,inbuf,sizeof(inbuf));
-
- while ((r = buffer_get(&bi,buf,sizeof(buf))) > 0)
- qmail_put(&qqt,buf,r);
- }
- close(fd);
- if (r == -1) qmail_fail(&qqt);
- }
-
- qmail_from(&qqt,bouncesender);
- qmail_to(&qqt,bouncerecip);
-
- if (*qmail_close(&qqt)) {
- log1s("warning: trouble injecting bounce message, will try later\n");
- return 0;
- }
-
- strnum2[fmt_ulong(strnum2,id)] = 0;
- log2s("bounce msg ",strnum2);
- strnum2[fmt_ulong(strnum2,qp)] = 0;
- log3s(" qp ",strnum2,"\n");
- }
-
- if (unlink(fn2.s) != 0) {
- log3s("warning: unable to unlink ",fn2.s,"\n");
- return 0;
- }
-
- return 1;
-}
-
-
-/* this file is too long ---------------------------------------- DELIVERIES */
-
-struct del {
- int used;
- int j;
- unsigned long delid;
- seek_pos mpos;
- stralloc recip;
-};
-
-unsigned long masterdelid = 1;
-unsigned int concurrency[CHANNELS] = { 10, 20 };
-unsigned int concurrencyused[CHANNELS] = { 0, 0 };
-struct del *d[CHANNELS];
-stralloc dline[CHANNELS];
-char delbuf[2048];
-
-void del_status()
-{
- int c;
-
- log1s("status:");
- for (c = 0; c < CHANNELS; ++c) {
- strnum2[fmt_ulong(strnum2,(unsigned long) concurrencyused[c])] = 0;
- strnum3[fmt_ulong(strnum3,(unsigned long) concurrency[c])] = 0;
- log2s(chanstatusmsg[c],strnum2);
- log2s("/",strnum3);
- }
- if (flagexitasap) log1s(" exitasap");
- log1s("\n");
-}
-
-void del_init()
-{
- int c;
- int i;
-
- for (c = 0; c < CHANNELS; ++c) {
- flagspawnalive[c] = 1;
- while (!(d[c] = (struct del *) alloc(concurrency[c] * sizeof(struct del))))
- nomem();
- for (i = 0; i < concurrency[c]; ++i)
- { d[c][i].used = 0; d[c][i].recip.s = 0; }
- dline[c].s = 0;
- while (!stralloc_copys(&dline[c],"")) nomem();
- }
-
- del_status();
-}
-
-int del_canexit()
-{
- int c;
-
- for (c = 0; c < CHANNELS; ++c)
- if (flagspawnalive[c]) /* if dead, nothing we can do about its jobs */
- if (concurrencyused[c]) return 0;
- return 1;
-}
-
-int del_avail(int c)
-{
- return flagspawnalive[c] && comm_canwrite(c) && (concurrencyused[c] < concurrency[c]);
-}
-
-void del_start(int j,seek_pos mpos,char *recip)
-{
- int i;
- int c;
-
- c = jo[j].channel;
- if (!flagspawnalive[c]) return;
- if (!comm_canwrite(c)) return;
-
- for (i = 0; i < concurrency[c]; ++i)
- if (!d[c][i].used) break;
- if (i == concurrency[c]) return;
-
- if (!stralloc_copys(&d[c][i].recip,recip)) { nomem(); return; }
- if (!stralloc_0(&d[c][i].recip)) { nomem(); return; }
- d[c][i].j = j; ++jo[j].refs;
- d[c][i].delid = masterdelid++;
- d[c][i].mpos = mpos;
- d[c][i].used = 1; ++concurrencyused[c];
-
- comm_write(c,i,jo[j].id,jo[j].sender.s,recip);
-
- strnum2[fmt_ulong(strnum2,d[c][i].delid)] = 0;
- strnum3[fmt_ulong(strnum3,jo[j].id)] = 0;
- log2s("starting delivery ",strnum2);
- log3s(": msg ",strnum3,tochan[c]);
- logsafe(recip);
- log1s("\n");
- del_status();
-}
-
-void markdone(int c,unsigned long id,seek_pos pos)
-{
- struct stat st;
- int fd;
-
- fnmake_chanaddr(id,c);
-
- for (;;) {
- fd = open_write(fn.s);
- if (fd == -1) break;
- if (fstat(fd,&st) == -1) { close(fd); break; }
- if (seek_set(fd,pos) == -1) { close(fd); break; }
- if (write(fd,"D",1) != 1) { close(fd); break; }
- /* further errors -> double delivery without us knowing about it, oh well */
- close(fd);
- return;
- }
- log3s("warning: trouble marking ",fn.s,"; message will be delivered twice!\n");
-}
-
-void del_dochan(int c)
-{
- int r;
- char ch;
- int i;
- int delnum;
-
- r = read(chanfdin[c],delbuf,sizeof(delbuf));
- if (r == -1) return;
- if (r == 0) { spawndied(c); return; }
-
- for (i = 0; i < r; ++i) {
- ch = delbuf[i];
- while (!stralloc_append(&dline[c],&ch)) nomem();
-
- if (dline[c].len > REPORTMAX)
- dline[c].len = REPORTMAX;
- /* qmail-lspawn and qmail-rspawn are responsible for keeping it short */
- /* but from a security point of view, we don't trust rspawn */
-
- if (!ch && (dline[c].len > 1)) {
- delnum = (unsigned int) (unsigned char) dline[c].s[0];
- if ((delnum < 0) || (delnum >= concurrency[c]) || !d[c][delnum].used)
- log1s("warning: internal error: delivery report out of range\n");
- else {
- strnum3[fmt_ulong(strnum3,d[c][delnum].delid)] = 0;
- if (dline[c].s[1] == 'Z')
- if (jo[d[c][delnum].j].flagdying) {
- dline[c].s[1] = 'D';
- --dline[c].len;
- while (!stralloc_cats(&dline[c],"I'm not going to try again; this message has been in the queue too long.\n")) nomem();
- while (!stralloc_0(&dline[c])) nomem();
- }
-
- switch (dline[c].s[1]) {
- case 'K':
- log3s("delivery ",strnum3,": success: ");
- logsafe(dline[c].s + 2);
- log1s("\n");
- markdone(c,jo[d[c][delnum].j].id,d[c][delnum].mpos);
- --jo[d[c][delnum].j].numtodo;
- break;
- case 'Z':
- log3s("delivery ",strnum3,": deferral: ");
- logsafe(dline[c].s + 2);
- log1s("\n");
- break;
- case 'D':
- log3s("delivery ",strnum3,": failure: ");
- logsafe(dline[c].s + 2);
- log1s("\n");
- addbounce(jo[d[c][delnum].j].id,d[c][delnum].recip.s,dline[c].s + 2);
- markdone(c,jo[d[c][delnum].j].id,d[c][delnum].mpos);
- --jo[d[c][delnum].j].numtodo;
- break;
- default:
- log3s("delivery ",strnum3,": report mangled, will defer\n");
- }
-
- job_close(d[c][delnum].j);
- d[c][delnum].used = 0; --concurrencyused[c];
- del_status();
-
- }
- dline[c].len = 0;
- }
- }
-}
-
-void del_selprep(int *nfds,fd_set *rfds)
-{
- int c;
-
- for (c = 0; c < CHANNELS; ++c)
- if (flagspawnalive[c]) {
- FD_SET(chanfdin[c],rfds);
- if (*nfds <= chanfdin[c])
- *nfds = chanfdin[c] + 1;
- }
-}
-
-void del_do(fd_set *rfds)
-{
- int c;
-
- for (c = 0; c < CHANNELS; ++c)
- if (flagspawnalive[c])
- if (FD_ISSET(chanfdin[c],rfds))
- del_dochan(c);
-}
-
-
-/* this file is too long -------------------------------------------- PASSES */
-
-struct
-{
- unsigned long id; /* if 0, need a new pass */
- int j; /* defined if id; job number */
- int fd; /* defined if id; reading from {local,remote} */
- seek_pos mpos; /* defined if id; mark position */
- buffer b;
- char buf[128];
-}
-pass[CHANNELS];
-
-void pass_init()
-{
- int c;
-
- for (c = 0; c < CHANNELS; ++c) pass[c].id = 0;
-}
-
-void pass_selprep(datetime_sec *wakeup)
-{
- int c;
- struct prioq_elt pe;
- if (flagexitasap) return;
-
- for (c = 0; c < CHANNELS; ++c)
- if (pass[c].id)
- if (del_avail(c))
- { *wakeup = 0; return; }
-
- if (job_avail())
- for (c = 0; c < CHANNELS; ++c)
- if (!pass[c].id)
- if (prioq_min(&pqchan[c],&pe))
- if (*wakeup > pe.dt) *wakeup = pe.dt;
-
- if (prioq_min(&pqfail,&pe))
- if (*wakeup > pe.dt)
- *wakeup = pe.dt;
-
- if (prioq_min(&pqdone,&pe))
- if (*wakeup > pe.dt)*wakeup = pe.dt;
-}
-
-static datetime_sec squareroot(datetime_sec x) /* result^2 <= x < (result + 1)^2 ; assuming: >= 0 */
-{
- datetime_sec y;
- datetime_sec yy;
- datetime_sec y21;
- int j;
-
- y = 0; yy = 0;
- for (j = 15; j >= 0; --j) {
- y21 = (y << (j + 1)) + (1 << (j + j));
- if (y21 <= x - yy) { y += (1 << j); yy += y21; }
- }
- return y;
-}
-
-datetime_sec nextretry(datetime_sec birth,int c)
-{
- int n;
-
- if (birth > recent) n = 0;
- else n = squareroot(recent - birth); /* no need to add fuzz to recent */
-
- n += chanskip[c];
- return birth + n * n;
-}
-
-void pass_dochan(int c)
-{
- datetime_sec birth;
- struct prioq_elt pe;
- static stralloc line = {0};
- int match;
-
- if (flagexitasap) return;
-
- if (!pass[c].id) {
- if (!job_avail()) return;
- if (!prioq_min(&pqchan[c],&pe)) return;
- if (pe.dt > recent) return;
- fnmake_chanaddr(pe.id,c);
-
- prioq_delmin(&pqchan[c]);
- pass[c].mpos = 0;
- pass[c].fd = open_read(fn.s);
- if (pass[c].fd == -1) goto trouble;
- if (!getinfo(&line,&birth,pe.id)) { close(pass[c].fd); goto trouble; }
- pass[c].id = pe.id;
- buffer_init(&pass[c].b,read,pass[c].fd,pass[c].buf,sizeof(pass[c].buf));
- pass[c].j = job_open(pe.id,c);
- jo[pass[c].j].retry = nextretry(birth,c);
- jo[pass[c].j].flagdying = (recent > birth + lifetime);
- while (!stralloc_copy(&jo[pass[c].j].sender,&line)) nomem();
- }
-
- if (!del_avail(c)) return;
-
- if (getln(&pass[c].b,&line,&match,'\0') == -1) {
- fnmake_chanaddr(pass[c].id,c);
- log3s("warning: trouble reading ",fn.s,"; will try again later\n");
- close(pass[c].fd);
- job_close(pass[c].j);
- pass[c].id = 0;
- return;
- }
-
- if (!match) {
- close(pass[c].fd);
- jo[pass[c].j].flaghiteof = 1;
- job_close(pass[c].j);
- pass[c].id = 0;
- return;
- }
-
- switch (line.s[0]) {
- case 'T':
- ++jo[pass[c].j].numtodo;
- del_start(pass[c].j,pass[c].mpos,line.s + 1);
- break;
- case 'D':
- break;
- default:
- fnmake_chanaddr(pass[c].id,c);
- log3s("warning: unknown record type in ",fn.s,"!\n");
- close(pass[c].fd);
- job_close(pass[c].j);
- pass[c].id = 0;
- return;
- }
-
- pass[c].mpos += line.len;
- return;
-
- trouble:
- log3s("warning: trouble opening ",fn.s,"; will try again later\n");
- pe.dt = recent + SLEEP_SYSFAIL;
- while (!prioq_insert(&pqchan[c],&pe)) nomem();
-}
-
-void messdone(unsigned long id)
-{
- char ch;
- int c;
- struct prioq_elt pe;
- struct stat st;
-
- for (c = 0; c < CHANNELS; ++c) {
- fnmake_chanaddr(id,c);
- if (stat(fn.s,&st) == 0) return; /* false alarm; consequence of HOPEFULLY */
- if (errno != ENOENT) {
- log3s("warning: unable to stat ",fn.s,"; will try again later\n");
- goto FAIL;
- }
- }
-
- fnmake_todo(id);
- if (stat(fn.s,&st) == 0) return;
- if (errno != ENOENT) {
- log3s("warning: unable to stat ",fn.s,"; will try again later\n");
- goto FAIL;
- }
-
- fnmake_info(id);
- if (stat(fn.s,&st) == -1) {
- if (errno == ENOENT) return;
- log3s("warning: unable to stat ",fn.s,"; will try again later\n");
- goto FAIL;
- }
-
- /* -todo +info -local -remote ?bounce */
- if (!injectbounce(id))
- goto FAIL; /* injectbounce() produced error message */
-
- strnum3[fmt_ulong(strnum3,id)] = 0;
- log3s("end msg ",strnum3,"\n");
-
- /* -todo +info -local -remote -bounce */
- fnmake_info(id);
- if (unlink(fn.s) == -1) {
- log3s("warning: unable to unlink ",fn.s,"; will try again later\n");
- goto FAIL;
- }
-
- /* -todo -info -local -remote -bounce; we can relax */
- fnmake_foop(id);
- if (buffer_putflush(&toqc,fn.s,fn.len) == -1) { cleandied(); return; }
- if (buffer_get(&fromqc,&ch,1) != 1) { cleandied(); return; }
- if (ch != '+') log3s("warning: qmail-clean unable to clean up ",fn.s,"\n");
-
- return;
-
- FAIL:
- pe.id = id; pe.dt = now() + SLEEP_SYSFAIL;
- while (!prioq_insert(&pqdone,&pe)) nomem();
-}
-
-void pass_do()
-{
- int c;
- struct prioq_elt pe;
-
- for (c = 0; c < CHANNELS; ++c)
- pass_dochan(c);
-
- if (prioq_min(&pqfail,&pe))
- if (pe.dt <= recent) {
- prioq_delmin(&pqfail);
- pqadd(pe.id);
- }
-
- if (prioq_min(&pqdone,&pe))
- if (pe.dt <= recent) {
- prioq_delmin(&pqdone);
- messdone(pe.id);
- }
-}
-
-
-/* this file is too long ------------------------------------- EXTERNAL TODO */
-
-stralloc todoline = {0};
-char todobuf[2048];
-int todofdin;
-int todofdout;
-int flagtodoalive;
-
-void tododied() {
- log1s("alert: lost connection to qmail-todo ... exiting\n");
- flagexitasap = 1;
- flagtodoalive = 0;
-}
-
-void todo_init()
-{
- todofdout = 7;
- todofdin = 8;
- flagtodoalive = 1;
- /* sync with external todo */
- if (write(todofdout,"S",1) != 1) tododied();
-
- return;
-}
-
-void todo_selprep(int *nfds,fd_set *rfds,datetime_sec *wakeup)
-{
- if (flagexitasap) {
- if (flagtodoalive) {
- write(todofdout,"X",1);
- }
- }
- if (flagtodoalive) {
- FD_SET(todofdin,rfds);
- if (*nfds <= todofdin)
- *nfds = todofdin + 1;
- }
-}
-
-void todo_del(char* s)
-{
- int flagchan[CHANNELS];
- struct prioq_elt pe;
- unsigned long id;
- unsigned int len;
- int c;
-
- for (c = 0; c < CHANNELS; ++c)
- flagchan[c] = 0;
-
- switch (*s++) {
- case 'L':
- flagchan[0] = 1;
- break;
- case 'R':
- flagchan[1] = 1;
- break;
- case 'B':
- flagchan[0] = 1;
- flagchan[1] = 1;
- break;
- case 'X':
- break;
- default:
- log1s("warning: qmail-send unable to understand qmail-todo\n");
- return;
- }
-
- len = scan_ulong(s,&id);
- if (!len || s[len]) {
- log1s("warning: qmail-send unable to understand qmail-todo\n");
- return;
- }
-
- pe.id = id; pe.dt = now();
- for (c = 0; c < CHANNELS; ++c)
- if (flagchan[c])
- while (!prioq_insert(&pqchan[c],&pe)) nomem();
-
- for (c = 0; c < CHANNELS; ++c)
- if (flagchan[c]) break;
-
- if (c == CHANNELS)
- while (!prioq_insert(&pqdone,&pe)) nomem();
-
- return;
-}
-
-void todo_do(fd_set *rfds)
-{
- int r;
- char ch;
- int i;
-
- if (!flagtodoalive) return;
- if (!FD_ISSET(todofdin,rfds)) return;
-
- r = read(todofdin,todobuf,sizeof(todobuf));
- if (r == -1) return;
- if (r == 0) {
- if (flagexitasap)
- flagtodoalive = 0;
- else
- tododied();
- return;
- }
-
- for (i = 0; i < r; ++i) {
- ch = todobuf[i];
- while (!stralloc_append(&todoline,&ch)) nomem();
- if (todoline.len > REPORTMAX)
- todoline.len = REPORTMAX;
- /* qmail-todo is responsible for keeping it short */
- if (!ch && (todoline.len > 1)) {
- switch (todoline.s[0]) {
- case 'D':
- if (flagexitasap) break;
- todo_del(todoline.s + 1);
- break;
- case 'L':
- log1s(todoline.s + 1);
- break;
- case 'X':
- if (flagexitasap)
- flagtodoalive = 0;
- else
- tododied();
- break;
- default:
- log1s("warning: qmail-send unable to understand qmail-todo: report mangled\n");
- break;
- }
- todoline.len = 0;
- }
- }
-}
-
-/* this file is too long ---------------------------------------------- MAIN */
-
-int getcontrols()
-{
- if (control_init() == -1) return 0;
- if (control_readint(&lifetime,"control/queuelifetime") == -1) return 0;
- if (control_readint(&concurrency[0],"control/concurrencylocal") == -1) return 0;
- if (control_readint(&concurrency[1],"control/concurrencyremote") == -1) return 0;
- if (control_rldef(&envnoathost,"control/envnoathost",1,"envnoathost") != 1) return 0;
- if (control_rldef(&bouncefrom,"control/bouncefrom",0,"MAILER-DAEMON") != 1) return 0;
- if (control_rldef(&bouncehost,"control/bouncehost",1,"bouncehost") != 1) return 0;
- if (control_readint(&bouncemaxbytes,"control/bouncemaxbytes") == -1) return 0;
- if (control_rldef(&doublebouncehost,"control/doublebouncehost",1,"doublebouncehost") != 1) return 0;
- if (control_rldef(&doublebounceto,"control/doublebounceto",0,"postmaster") != 1) return 0;
- if (!stralloc_cats(&doublebounceto,"@")) return 0;
- if (!stralloc_cat(&doublebounceto,&doublebouncehost)) return 0;
- if (!stralloc_0(&doublebounceto)) return 0;
- if (control_readfile(&locals,"control/locals",1) != 1) return 0;
- if (!constmap_init(&maplocals,locals.s,locals.len,0)) return 0;
- switch (control_readfile(&percenthack,"control/percenthack",0)) {
- case -1: return 0;
- case 0: if (!constmap_init(&mappercenthack,"",0,0)) return 0; break;
- case 1: if (!constmap_init(&mappercenthack,percenthack.s,percenthack.len,0)) return 0; break;
- }
- switch (control_readfile(&vdoms,"control/virtualdomains",0)) {
- case -1: return 0;
- case 0: if (!constmap_init(&mapvdoms,"",0,1)) return 0; break;
- case 1: if (!constmap_init(&mapvdoms,vdoms.s,vdoms.len,1)) return 0; break;
- }
- return 1;
-}
-
-stralloc newlocals = {0};
-stralloc newvdoms = {0};
-
-void regetcontrols()
-{
- int r;
-
- if (control_readfile(&newlocals,"control/locals",1) != 1) { log1s("alert: unable to reread control/locals\n"); return; }
- if (control_readint(&concurrency[0],"control/concurrencylocal") == -1) { log1s("alert: unable to reread control/concurrencylocal\n"); return; }
- if (control_readint(&concurrency[1],"control/concurrencyremote") == -1) { log1s("alert: unable to reread control/concurrencyremote\n"); return; }
- if (control_readint(&lifetime,"control/queuelifetime") == -1) { log1s("alert: unable to reread control/queuelifetime\n"); return; }
-
- r = control_readfile(&newvdoms,"control/virtualdomains",0);
- if (r == -1) { log1s("alert: unable to reread control/virtualdomains\n"); return; }
-
- constmap_free(&maplocals);
- constmap_free(&mapvdoms);
-
- while (!stralloc_copy(&locals,&newlocals)) nomem();
- while (!constmap_init(&maplocals,locals.s,locals.len,0)) nomem();
-
- if (r) {
- while (!stralloc_copy(&vdoms,&newvdoms)) nomem();
- while (!constmap_init(&mapvdoms,vdoms.s,vdoms.len,1)) nomem();
- } else
- while (!constmap_init(&mapvdoms,"",0,1)) nomem();
-}
-
-void reread()
-{
- if (chdir(auto_qmail) == -1) {
- log1s("alert: unable to reread controls: unable to switch to home directory\n");
- return;
- }
- write(todofdout,"H",1);
- regetcontrols();
-
- while (chdir("queue") == -1) {
- log1s("alert: unable to switch back to queue directory; HELP! sleeping...\n");
- sleep(10);
- }
-}
-
-int main()
-{
- int fd;
- datetime_sec wakeup;
- fd_set rfds;
- fd_set wfds;
- int nfds;
- struct timeval tv;
- int c;
- int u;
- int r;
- char ch;
-
- if (chdir(auto_qmail) == -1) { log1s("alert: cannot start: unable to switch to home directory\n"); _exit(110); }
- if (!getcontrols()) { log1s("alert: cannot start: unable to read controls\n"); _exit(111); }
- if (chdir("queue") == -1) { log1s("alert: cannot start: unable to switch to queue directory\n"); _exit(110); }
- sig_pipeignore();
- sig_termcatch(sigterm);
- sig_alarmcatch(sigalrm);
- sig_hangupcatch(sighup);
- sig_childdefault();
- umask(077);
-
- fd = open_write("lock/sendmutex");
- if (fd == -1) { log1s("alert: cannot start: unable to open mutex\n"); _exit(111); }
- if (lock_exnb(fd) == -1) { log1s("alert: cannot start: qmail-send is already running\n"); _exit(111); }
-
- numjobs = 0;
- for (c = 0;c < CHANNELS;++c) {
- do
- r = read(chanfdin[c],&ch,1);
-
- while ((r == -1) && (errno == EINTR));
- if (r < 1) { log1s("alert: cannot start: hath the daemon spawn no fire?\n"); _exit(111); }
-
- u = (unsigned int) (unsigned char) ch;
- if (concurrency[c] > u) concurrency[c] = u;
- numjobs += concurrency[c];
- }
-
- fnmake_init();
-
- comm_init();
-
- pqstart();
- job_init();
- del_init();
- pass_init();
- todo_init();
- cleanup_init();
-
- while (!flagexitasap || !del_canexit() || flagtodoalive) {
- recent = now();
-
- if (flagrunasap) { flagrunasap = 0; pqrun(); }
- if (flagreadasap) { flagreadasap = 0; reread(); }
-
- wakeup = recent + SLEEP_FOREVER;
- FD_ZERO(&rfds);
- FD_ZERO(&wfds);
- nfds = 1;
-
- comm_selprep(&nfds,&wfds);
- del_selprep(&nfds,&rfds);
- pass_selprep(&wakeup);
- todo_selprep(&nfds,&rfds,&wakeup);
- cleanup_selprep(&wakeup);
-
- if (wakeup <= recent) tv.tv_sec = 0;
- else tv.tv_sec = wakeup - recent + SLEEP_FUZZ;
- tv.tv_usec = 0;
-
- if (select(nfds,&rfds,&wfds,(fd_set *) 0,&tv) == -1)
- if (errno == EINTR)
- ;
- else
- log1s("warning: trouble in select\n");
- else {
- recent = now();
-
- comm_do(&wfds);
- del_do(&rfds);
- todo_do(&rfds);
- pass_do();
- cleanup_do();
- }
- }
-
- pqfinish();
- log1s("status: exiting\n");
- _exit(0);
-}
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-23 07:47:02 +0000