void SubmitFile::MessageStart()
{
bytecount=0;
sizelimit=config_sizelimit();
addrlist_map.clear();
addrlist_gdbm.Close();
if (ctlfile.fd() < 0)
openctl();
unlink(namefile("D", 1).c_str()); // Might be the GDBM file
int nfd=open(namefile("D",0).c_str(),
O_RDWR | O_CREAT | O_TRUNC, PERMISSION);
if (nfd < 0)
{
clog_msg_start_err();
clog_msg_str(namefile("D",0).c_str());
clog_msg_str(": ");
clog_msg_errno();
}
datfile.fd(nfd);
rwrfcptr=rfc2045_alloc_ac();
if (rwrfcptr == NULL)
clog_msg_errno();
diskfull=checkfreespace(&diskspacecheck);
}
int rw_init_courier(const char *name)
{
unsigned i;
int err=0;
if (rw_init_verbose_flag)
{
clog_msg_start_info();
clog_msg_str("Loading STATIC transport module libraries.");
clog_msg_send();
}
if (rw_install_start()) return (-1);
for (i=0; rw_static[i].name; i++)
/* name != 0 really meaningless for static libs, but,
** what the heck...
*/
if ((name == 0 || strcmp(name,
rw_static[i].name) == 0) &&
rw_install(rw_static[i].name,
rw_static[i].rw_install,
rw_static[i].rw_init))
err=1;
if (err || rw_install_init())
{
clog_msg_start_err();
clog_msg_str("Transport module installation has FAILED.");
clog_msg_send();
return (-1);
}
return (0);
}
int main(int argc, char **argv)
{
struct moduledel *p;
int waitstat;
const char *cp;
clog_open_syslog("courierfax");
if (chdir(getenv("COURIER_HOME")))
clog_msg_errno();
cp=getenv("MAXDELS");
if (!cp || atoi(cp) != 1)
{
clog_msg_start_err();
clog_msg_str("FATAL: courierfax module misconfiguration, MAXDELS must be 1");
clog_msg_send();
exit(0);
}
cp=getenv("MAXRCPT");
if (!cp || atoi(cp) != 1)
{
clog_msg_start_err();
clog_msg_str("FATAL: courierfax module misconfiguration, MAXRCPT must be 1");
clog_msg_send();
exit(0);
}
module_init(0);
while ((p=module_getdel()) != NULL)
{
pid_t pid;
unsigned delid;
delid=atol(p->delid);
if ((pid=module_fork(delid, 0)) == -1)
{
clog_msg_prerrno();
module_completed(delid, delid);
continue;
}
if (pid == 0)
{
fax(p);
exit(0);
}
}
module_signal(SIGTERM);
signal(SIGCHLD, SIG_DFL);
signal(SIGALRM, killit);
alarm(5);
wait(&waitstat);
alarm(0);
return (0);
}
void SubmitFile::AddReceipient(const char *r,
const char *orig, const char *dsn, int delivered)
{
// If # of receipients in the current control file exceeds the
// defined batch size, close the current control file.
if (rcptcount >= batchsize)
{
closectl();
//
// The first time we create another control file, rename the first
// control file to Cnnnn.1, which is a flag not to process Cnnnn.2, .3, etc...
//
// Cnnnn.2, .3, ... will be processed only after Cnnnn.1 is renamed to Cnnnn
//
if (num_control_files_created == 1)
{
std::string p=name1stctlfile();
std::string q=namefile("C", 1);
if (rename(p.c_str(), q.c_str()))
{
clog_msg_start_err();
clog_msg_str(p.c_str());
clog_msg_str(" -> ");
clog_msg_str(q.c_str());
clog_msg_str(": ");
clog_msg_errno();
}
}
}
// Open a new control file, if necessary.
if (ctlfile.fd() < 0)
openctl();
ctlfile << COMCTLFILE_RECEIPIENT << r << std::endl
<< COMCTLFILE_ORECEIPIENT << (orig ? orig:"") << std::endl
<< COMCTLFILE_DSN << (dsn ? dsn:"") << std::endl;
if (delivered)
{
ctlfile << COMCTLFILE_DELINFO << rcptcount << ' '
<< COMCTLFILE_DELINFO_REPLY
<< " 250 Ok - delivered to alias." << std::endl
<< COMCTLFILE_DELSUCCESS << rcptcount << ' '
<< submit_time << " r" << std::endl;
}
ctlfile << std::flush;
++rcptcount;
if (bofh_chkspamtrap(r))
{
spamtrap_flag=1;
}
}
void msgq::init(unsigned qs)
{
queue.resize(qs);
queuehashfirst.resize(qs);
queuehashlast.resize(qs);
queuehead=0;
queuetail=0;
queuefree=0;
queuedelivering=0;
queuewaiting=0;
inprogress=0;
backup_relay_driver=0;
char *filename=config_localfilename("backuprelay");
char *buf=config_read1l(filename);
free(filename);
if (buf)
{
const char *h=strtok(buf, " \t\r\n");
if (h)
{
backup_relay=h;
h=strtok(0, " \t\r\n");
if (!h) h="esmtp";
struct rw_transport *t=rw_search_transport(h);
if (!t)
{
clog_msg_start_err();
clog_msg_str("BACKUP RELAY DRIVER NOT FOUND: ");
clog_msg_str(h);
clog_msg_send();
exit(1);
}
backup_relay_driver=(drvinfo *)t->udata;
}
}
unsigned i;
for (i=0; i<qs; i++)
{
queue[i].next=queuefree;
queuefree=&queue[i];
queuehashfirst[i]=0;
queuehashlast[i]=0;
}
}
void qmsgunlink(ino_t n, time_t rightnow)
{
const char *bigbrother=getenv("ARCHIVEDIR");
if (bigbrother && *bigbrother)
{
struct tm *tmptr=localtime(&rightnow);
/* Archive this message */
if (tmptr)
{
const char *dname=qmsgsdatname(n);
const char *tname=strrchr(dname, '/');
char *p=courier_malloc(strlen(bigbrother)+
strlen(tname)+40);
sprintf(p, "%s/%04d.%02d.%02d%s",
bigbrother, tmptr->tm_year + 1900,
tmptr->tm_mon+1,
tmptr->tm_mday, tname);
if (bigbrother_create_rename(dname, p) == 0)
{
dname=qmsgsctlname(n);
strcpy(strrchr(p, '/'), strrchr(dname, '/'));
if (rename(dname, p) == 0)
{
free(p);
return;
}
}
clog_msg_start_err();
clog_msg_str("Unable to move ");
clog_msg_str(dname);
clog_msg_str(" to ");
clog_msg_str(p);
clog_msg_send();
clog_msg_prerrno();
free(p);
}
}
unlink(qmsgsdatname(n));
unlink(qmsgsctlname(n));
}
int SubmitFile::ChkRecipient(const char *key)
{
receipient=key;
// Ignore duplicate addresses.
if (addrlist_gdbm.IsOpen())
{
if (addrlist_gdbm.Exists(receipient))
return (-1); /* Already exists */
if (addrlist_gdbm.Store(receipient, "", "R"))
clog_msg_errno();
}
else
{
if (addrlist_map.find(receipient) != addrlist_map.end())
return (-1); /* Already exists */
addrlist_map.insert(receipient);
if (addrlist_map.size() > SPILLLEVEL)
{
//
// Store the GDBM file in the name that's reserved for the first hard link
// link to the message file (which is never used).
//
std::string gdbmname=namefile("D",1);
if (addrlist_gdbm.Open(gdbmname.c_str(), "N"))
{
clog_msg_start_err();
clog_msg_str(gdbmname.c_str());
clog_msg_str(": ");
clog_msg_errno();
}
std::set<std::string>::iterator b, e;
for (b=addrlist_map.begin(),
e=addrlist_map.end(); b != e; ++b)
{
if (addrlist_gdbm.Store(*b, std::string(""),
"R"))
clog_msg_errno();
}
addrlist_map.clear();
}
}
return (0);
}
static void terminated_child(unsigned idx, unsigned delid)
{
if (ESMTP_TERMINATING(&info[idx]))
{
char *p;
if ((p=info[idx].pendel) != 0)
{
char **cols=module_parsecols(info[idx].pendel);
/*
** Clear to 0 to prevent infinite loop if fork fails
** in start_child.
*/
info[idx].pendel=0;
start_child(idx, info[idx].pendel, cols);
info[idx].pendel=p;
send_child(idx, info[idx].pendel, cols);
return;
}
info[idx].pid= -1;
return;
}
/* Oops, something crashed. Clean it up */
clog_msg_start_err();
if (info[idx].pid < 0)
{
clog_msg_str("Unable to fork");
}
else
{
clog_msg_str("Crashed child process ");
clog_msg_uint(info[idx].pid);
}
if (ESMTP_BUSY(&info[idx]))
{
clog_msg_str(", while delivering to ");
clog_msg_str(info[idx].host);
module_completed(idx, delid);
}
clog_msg_send();
close(info[idx].cmdpipe);
info[idx].cmdpipe= -1;
info[idx].pid= -1;
}
int cargs(int argc, char **argv, const struct courier_args *argp)
{
int argn;
int i,l=0;
const char *argval;
if ((progname=strrchr(argv[0], '/')) != 0)
++progname;
else
progname=argv[0];
for (argn=1; argn<argc; argn++)
{
if (argv[argn][0] != '-') break;
if (argv[argn][1] == 0)
{
++argn;
break;
}
if (argv[argn][0] != '-') break;
for (i=0; argp[i].argname; i++)
{
l=strlen(argp[i].argname);
if (strncmp(argv[argn]+1, argp[i].argname, l) == 0 &&
(argv[argn][l+1] == '=' ||
argv[argn][l+1] == '\0'))
break;
}
if (!argp[i].argname)
{
clog_open_stderr(progname);
clog_msg_start_err();
clog_msg_str("Invalid argument: ");
clog_msg_str(argv[argn]);
clog_msg_send();
exit(1);
}
if (*(argval=argv[argn]+1+l))
++argval;
if (argp[i].argval)
*argp[i].argval=argval;
if (argp[i].argfunc)
(*argp[i].argfunc)(argval);
}
return (argn);
}
static void reap_child(pid_t pid, int exit_status)
{
int n;
fd_set fd0;
struct timeval tv;
FD_ZERO(&fd0);
FD_SET(0, &fd0);
tv.tv_sec=0;
tv.tv_usec=0;
if (select(1, &fd0, 0, 0, &tv) >= 0)
{
if (FD_ISSET(0, &fd0))
return;
}
n=wait_reforkchild(nchildren, children, pid);
if (n < 0)
{
unsigned u;
clog_open_syslog("perlfilter");
clog_msg_str("ERR: Unable to restart a child process"
" - aborting.");
clog_msg_send();
for (u=0; u<nchildren; u++)
if (children[u] >= 0)
kill(children[u], SIGKILL);
exit(0);
}
if (n > 0)
{
wait_restore();
if (exit_status)
{
clog_open_syslog("perlfilter");
clog_msg_str("ERR: Child process ");
clog_msg_uint(pid);
clog_msg_str(" terminated - restarting.");
clog_msg_send();
}
perlfilter();
}
}
static void kill1filter(struct filterinfo **p)
{
int waitstat;
pid_t pid;
struct filterinfo *pp= *p;
*p=pp->next;
clog_msg_start_info();
clog_msg_str("Stopping ");
clog_msg_str(pp->filtername);
clog_msg_send();
close(pp->fd0);
while ((pid=wait(&waitstat)) >= 0 && pid != pp->p)
;
free(pp->filtername);
free(pp);
}
void trackpurge(const char *trackdir)
{
struct stat stat_buf;
if (stat(trackdir, &stat_buf) == 0 && stat_buf.st_uid != geteuid())
{
clog_msg_start_err();
clog_msg_str("Warning: ");
clog_msg_str(trackdir);
clog_msg_str(" is not owned by the correct uid");
clog_msg_send();
}
if (dopurge(trackdir))
{
clog_msg_start_err();
clog_msg_str("Cannot open ");
clog_msg_str(trackdir);
clog_msg_send();
clog_msg_prerrno();
return;
}
}
static void purgedir(const char *dirname)
{
std::string buf;
DIR *p;
struct dirent *de;
clog_msg_start_info();
clog_msg_str("Purging ");
clog_msg_str(dirname);
clog_msg_send();
p=opendir(dirname);
if (!p) return;
while ((de=readdir(p)) != NULL)
{
if (de->d_name[0] == '.') continue;
buf=dirname;
buf += '/';
buf += de->d_name;
rmdir(buf.c_str()); // Just for the hell of it
}
closedir(p);
}
int msgq::tmpscan()
{
int found=0;
time(¤t_time);
DIR *tmpdir=opendir(TMPDIR);
if (!tmpdir) clog_msg_errno();
struct dirent *de;
std::string subdir;
std::string ctlfile, datfile, newctlfile, newdatfile;
struct stat stat_buf;
std::string qdir, qname;
while ((de=readdir(tmpdir)) != 0)
{
const char *p;
for (p=de->d_name; *p; p++)
if (!isdigit((int)(unsigned char)*p)) break;
if (*p) continue; // Subdirs must be named all digits
subdir=TMPDIR "/";
subdir += de->d_name;
DIR *subde=opendir(subdir.c_str());
while ((de=readdir(subde)) != 0 && found < 100)
{
if (strcmp(de->d_name, ".") == 0 ||
strcmp(de->d_name, "..") == 0) continue;
ctlfile=subdir;
ctlfile += '/';
ctlfile += de->d_name;
int i=-1;
if (stat(ctlfile.c_str(), &stat_buf)) continue;
size_t j=ctlfile.size();
while (j)
{
if (ctlfile[--j] == '/')
break;
if (ctlfile[j] == '.')
{
i=j;
break;
}
}
ino_t inum=stat_buf.st_ino;
// Cleanup timeout. Should always be sufficiently longer than
// the submit timeout set in submit.C via alarm_timeout.
if (stat_buf.st_mtime < current_time - 48 * 60 * 60)
{
if (de->d_name[0] == 'D')
{
datfile=subdir + "/C" +
(de->d_name+1);
if (stat(datfile.c_str(), &stat_buf)
== 0)
continue;
// Wait until the C file is
// purged
// Be carefull with Cnnnn.x files, because
// Cnnnn.1 is used to hold submission of all
// of them. A race condition can leave
// Cnnnn.1 in a submittable state, so if it
// is removed, other copies of this message
// can become submittable, during a very small
// window.
} else if (de->d_name[0] == 'C' && i >= 0)
{
// This race condition is handled simply
// by not removing Cxxxxx.n if Cxxxxx.n+1
// exists.
char nbuf[NUMBUFSIZE];
datfile=ctlfile.substr(0, i);
size_t n=atoi( ctlfile.c_str()+i+1);
++n;
datfile += '.';
datfile += libmail_str_size_t(n, nbuf);
if (stat(datfile.c_str(), &stat_buf)
== 0)
continue;
// Wait until the C.1 file is
// purged
unlink(ctlfile.c_str());
ctlfile=subdir + "/D" +
(de->d_name+1);
/* FALLTHRU */
}
unlink(ctlfile.c_str());
continue;
}
if (de->d_name[0] != 'C') continue;
if (i >= 0)
{
datfile=ctlfile.substr(0, i);
datfile += ".1";
if (ctlfile == datfile ||
stat(datfile.c_str(), &stat_buf) == 0)
continue;
}
datfile=subdir + "/D" + (de->d_name+1);
newdatfile=qmsgsdatname(inum);
newctlfile=qmsgsctlname(inum);
struct ctlfile ctf;
if ((access(datfile.c_str(), 0) == 0 &&
access(newdatfile.c_str(), 0) == 0) ||
access(newctlfile.c_str(), 0) == 0 ||
ctlfile_openfn(ctlfile.c_str(), &ctf, 0, 0))
{
clog_msg_start_err();
clog_msg_str("QUEUE FILE CORRUPTION: inode ");
clog_msg_uint(inum);
clog_msg_send();
utime(ctlfile.c_str(), 0);
// Keep it around
continue;
}
time_t nextattempt=current_time+delaytime;
if ((i=ctlfile_searchfirst(&ctf,
COMCTLFILE_SUBMITDELAY)) >= 0)
nextattempt=current_time+
atoi(ctf.lines[i]+1);
qname=qmsgqname(inum, nextattempt);
ctlfile_nextattempt(&ctf, nextattempt);
if (link(ctlfile.c_str(), qname.c_str()))
{
mkdir(qmsgqdir(current_time),0755);
if (link(ctlfile.c_str(), qname.c_str())
&& errno != EEXIST)
clog_msg_errno();
}
if (rename(datfile.c_str(), newdatfile.c_str()))
{
mkdir(qmsgsdir(inum), 0755);
// We may need to create this dir
rename(datfile.c_str(), newdatfile.c_str());
}
if (rename(ctlfile.c_str(), newctlfile.c_str()))
clog_msg_errno();
for (i=qname.size(); i; )
{
if (qname[--i] == '/')
break;
}
qdir=qname.substr(0, i);
qname=qname.substr(i+1);
++found;
ctlfile_close(&ctf);
queuescan3(qdir, qname, de->d_name);
}
closedir(subde);
if (stat(subdir.c_str(), &stat_buf) == 0 &&
stat_buf.st_mtime < current_time - 2 * 60 * 60)
rmdir(subdir.c_str()); // Just give it a try
}
closedir(tmpdir);
return (found);
}
/*
** sighup attempts to synchronize everything.
*/
static void sighup()
{
struct filterinfo **pp;
DIR *dirp;
struct dirent *de;
/* Start any new filters */
dirp=opendir(FILTERACTIVEDIR);
while (dirp && (de=readdir(dirp)) != 0)
{
char *n;
int pipefd[2];
struct filterinfo *newp;
if (de->d_name[0] == '.')
continue;
for (pp= &filterlist; *pp; pp= &(*pp)->next)
if (strcmp( (*pp)->filtername, de->d_name) == 0)
break;
if (*pp) continue;
n=malloc(sizeof(FILTERACTIVEDIR "/")+strlen(de->d_name));
if (!n)
{
perror("malloc");
exit(1);
}
strcat(strcpy(n, FILTERACTIVEDIR "/"), de->d_name);
if ( (newp=(struct filterinfo *)
malloc(sizeof(struct filterinfo))) == 0 ||
(newp->filtername=malloc(strlen(de->d_name)+1)) == 0)
{
perror("malloc");
exit(1);
}
strcpy(newp->filtername, de->d_name);
newp->next=filterlist;
filterlist=newp;
if (pipe(pipefd) < 0)
{
perror("pipe");
exit(1);
}
newp->fd0=pipefd[1];
while ((newp->p=fork()) < 0)
{
perror("fork");
sleep(3);
}
if ( newp->p == 0)
{
dup2(pipefd[0], 0);
close(pipefd[0]);
close(pipefd[1]);
execl(n, de->d_name, (char *)0);
perror("exec");
exit(1);
}
free(n);
close(pipefd[0]);
if (fcntl(newp->fd0, F_SETFD, FD_CLOEXEC) < 0)
{
perror("fcntl");
exit(1);
}
clog_msg_start_info();
clog_msg_str("Starting ");
clog_msg_str(newp->filtername);
clog_msg_send();
}
if (dirp) closedir(dirp);
/* Then, kill any filters that should not be running any more */
for (pp= &filterlist; *pp; )
{
char *n=activename( (*pp)->filtername );
if (access(n, 0) == 0)
{
free(n);
pp= &(*pp)->next;
continue;
}
free(n);
kill1filter(pp);
}
/* Finally, remove any sockets for filters that don't run any more */
{
static const char *dirs[2]={FILTERSOCKETDIR, ALLFILTERSOCKETDIR};
int i;
for (i=0; i<2; i++)
{
dirp=opendir(dirs[i]);
while (dirp && (de=readdir(dirp)) != 0)
{
char *n;
if (de->d_name[0] == '.')
continue;
for (pp= &filterlist; *pp; pp= &(*pp)->next)
if (strcmp( (*pp)->filtername, de->d_name) == 0)
break;
if (*pp) continue;
n=malloc(strlen(dirs[i])+strlen(de->d_name)+2);
if (!n)
{
perror("malloc");
exit(1);
}
strcat(strcat(strcpy(n, dirs[i]), "/"), de->d_name);
unlink(n);
free(n);
}
if (dirp) closedir(dirp);
}
}
}
void drvinfo::init()
{
unsigned cnt, i;
struct rw_transport *p;
module_dsn=0;
queuelo=0;
for (cnt=0, p=rw_transport_first; p; p=p->next)
++cnt;
if ((modules=new drvinfo[cnt]) == 0) clog_msg_errno();
cnt=0;
for (p=rw_transport_first; p; p=p->next)
{
char *namebuf=(char *)courier_malloc(
sizeof( SYSCONFDIR "/module.")+strlen(p->name));
strcat(strcpy(namebuf, SYSCONFDIR "/module."),
p->name);
FILE *config=fopen(namebuf, "r");
if (!config)
{
clog_msg_start_err();
clog_msg_str("Cannot open ");
clog_msg_str(namebuf);
clog_msg_send();
exit(1);
}
free(namebuf);
unsigned maxdels=1;
unsigned maxhost=1;
unsigned maxrcpt=1;
char *prog=0;
char buf[BUFSIZ];
while (fgets(buf, sizeof(buf), config) != 0)
{
char *p;
if ((p=strchr(buf, '#')) != 0) *p=0;
p=strtok(buf, " \t\r\n=");
if (strcmp(p, "MAXDELS") == 0)
{
p=strtok(NULL, " \t\r\n=");
if (p) maxdels=atoi(p);
}
else if (strcmp(p, "MAXHOST") == 0)
{
p=strtok(NULL, " \t\r\n=");
if (p) maxhost=atoi(p);
}
else if (strcmp(p, "MAXRCPT") == 0)
{
p=strtok(NULL, " \t\r\n=");
if (p) maxrcpt=atoi(p);
}
else if (strcmp(p, "PROG") == 0 && !prog)
{
p=strtok(NULL, "\t\r\n=");
if (p)
{
prog=(char *)
courier_malloc(strlen(p)+1);
strcpy(prog, p);
}
}
}
fclose(config);
if (!prog) continue; // Input only module
modules[cnt].module=p;
p->udata=(void *)&modules[cnt];
modules[cnt].delinfo_list.resize(maxdels);
modules[cnt].hosts_list.resize(maxdels);
queuelo += maxdels;
modules[cnt].maxhost=maxhost;
modules[cnt].maxrcpt=maxrcpt;
modules[cnt].delpfreefirst=0;
if (strcmp(p->name, DSN) == 0)
module_dsn= &modules[cnt];
for (i=0; i<maxdels; i++)
{
modules[cnt].delinfo_list[i].delid=i;
modules[cnt].delinfo_list[i].freenext=
modules[cnt].delpfreefirst;
modules[cnt].delpfreefirst=
&modules[cnt].delinfo_list[i];
}
modules[cnt].hdlvrpfree=0;
for (i=0; i<maxdels; i++)
{
modules[cnt].hosts_list[i].next=
modules[cnt].hdlvrpfree;
modules[cnt].hdlvrpfree=&modules[cnt].hosts_list[i];
}
modules[cnt].hdlvrpfirst=0;
modules[cnt].hdlvrplast=0;
int pipe0[2], pipe1[2];
if (pipe(pipe0) || pipe(pipe1))
clog_msg_errno();
switch (modules[cnt].module_pid=fork()) {
case 0:
#if 0
// replaced by close-on-exec, below
for (i=cnt; i; )
{
--i;
fclose(modules[i].module_to);
close(modules[i].module_from.fd);
}
#endif
close(pipe0[1]);
close(pipe1[0]);
dup2(pipe0[0], 0);
dup2(pipe1[1], 1);
close(pipe0[0]);
close(pipe1[1]);
signal(SIGCHLD, SIG_DFL);
if (chdir(MODULEDIR) ||
chdir(modules[cnt].module->name))
{
clog_msg_start_err();
clog_msg_str(MODULEDIR "/");
clog_msg_str(modules[cnt].module->name);
clog_msg_str(" does not exist.");
clog_msg_send();
clog_msg_errno();
}
{
char maxdels_buf[MAXLONGSIZE+15];
char maxhost_buf[MAXLONGSIZE+15];
char maxrcpt_buf[MAXLONGSIZE+15];
const char *sh=getenv("SHELL");
sprintf(maxdels_buf, "MAXDELS=%ld",
(long)maxdels);
sprintf(maxhost_buf, "MAXHOST=%ld",
(long)maxhost);
sprintf(maxrcpt_buf, "MAXRCPT=%ld",
(long)maxrcpt);
putenv(maxdels_buf);
putenv(maxhost_buf);
putenv(maxrcpt_buf);
const char *ch=courierdir();
char *p=(char *)courier_malloc(strlen(ch)+
sizeof("COURIER_HOME="));
strcat(strcpy(p,"COURIER_HOME="), ch);
putenv(p);
if (!sh) sh="/bin/sh";
execl(sh, sh, "-c", prog, (char *)0);
clog_msg_start_err();
clog_msg_str(MODULEDIR "/");
clog_msg_str(modules[cnt].module->name);
clog_msg_str(": ");
clog_msg_str(prog);
clog_msg_send();
clog_msg_errno();
}
case -1:
clog_msg_errno();
break;
}
close(pipe0[0]);
close(pipe1[1]);
if (fcntl(pipe0[1], F_SETFD, FD_CLOEXEC) ||
fcntl(pipe1[0], F_SETFD, FD_CLOEXEC))
clog_msg_errno();
if ((modules[cnt].module_to=fdopen(pipe0[1], "w")) == NULL)
clog_msg_errno();
mybuf_init( &modules[cnt].module_from, pipe1[0] );
clog_msg_start_info();
clog_msg_str("Started ");
clog_msg_str(prog);
clog_msg_str(", pid=");
clog_msg_int(modules[cnt].module_pid);
clog_msg_str(", maxdels=");
clog_msg_int(maxdels);
clog_msg_str(", maxhost=");
clog_msg_int(maxhost);
clog_msg_str(", maxrcpt=");
clog_msg_int(maxrcpt);
clog_msg_send();
free(prog);
cnt++;
}
nmodules=cnt;
if (queuelo < 200) queuelo=200;
char *cfname=config_localfilename("queuelo");
char *conf=config_read1l(cfname);
if (conf)
{
queuelo=atoi(conf);
free(conf);
}
free(cfname);
if (queuelo < 20) queuelo=20;
cfname=config_localfilename("queuehi");
conf=config_read1l(cfname);
if (conf)
{
queuehi=atoi(conf);
free(conf);
}
else
queuehi=queuelo < 500 ? queuelo * 2:queuelo+1000;
if (queuehi < queuelo) queuehi=queuelo;
free(cfname);
clog_msg_start_info();
clog_msg_str("queuelo=");
clog_msg_int(queuelo);
clog_msg_str(", queuehi=");
clog_msg_int(queuehi);
clog_msg_send();
if (module_dsn == 0)
{
clog_msg_start_err();
clog_msg_str("Driver dsn not found.");
clog_msg_send();
exit(1);
}
}
int main(int argc, char **argv)
{
struct moduledel *p;
clog_open_syslog("courierlocal");
if (chdir(courier_home=getenv("COURIER_HOME")))
clog_msg_errno();
if (atol(getenv("MAXRCPT")) > 1)
{
clog_msg_start_err();
clog_msg_str("Invalid configuration in config, set MAXRCPT=1");
clog_msg_send();
exit(1);
}
module_init(0);
module_delivery_timeout(config_readtime("localtimeout", 15*60));
while ((p=module_getdel()) != NULL)
{
unsigned delid=atol(p->delid);
unsigned rcptnum;
struct ctlfile ctf;
int pipe1[2], pipe2[2];
pid_t pid;
int datfd;
struct stat stat_buf;
pid=module_fork(delid, 0);
if (pid < 0)
{
clog_msg_prerrno();
module_completed(delid, delid);
continue;
}
if (pid) continue;
#if HAVE_SETPGRP
#if SETPGRP_VOID
setpgrp();
#else
setpgrp(0, 0);
#endif
#endif
if (p->nreceipients != 1)
{
clog_msg_start_err();
clog_msg_str("Invalid message from courierd.");
clog_msg_send();
_exit(0);
}
rcptnum=atol(p->receipients[0]);
if (ctlfile_openi(p->inum, &ctf, 0))
{
clog_msg_errno();
_exit(0);
}
if (pipe(pipe1) < 0 || pipe(pipe2) < 0
|| (pid=fork()) < 0)
{
clog_msg_prerrno();
ctlfile_append_reply(&ctf, rcptnum,
"Can't run courierdeliver.",
COMCTLFILE_DELDEFERRED, 0);
ctlfile_close(&ctf);
_exit(0);
return (0);
}
if ((datfd=open(qmsgsdatname(p->inum), O_RDONLY)) < 0)
{
clog_msg_prerrno();
ctlfile_append_reply(&ctf, rcptnum,
"Unable to read message file.",
COMCTLFILE_DELDEFERRED, 0);
ctlfile_close(&ctf);
_exit(0);
return (0);
}
if (pid == 0)
{
const char *host, *homedir, *maildir, *quota;
char *buf, *s;
char *username, *ext;
uid_t u;
gid_t g;
close(pipe1[0]);
close(pipe2[0]);
dup2(pipe2[1], 2);
close(pipe2[1]);
dup2(pipe1[1], 1);
close(pipe1[1]);
close(0);
if (dup(datfd) != 0)
{
clog_msg_start_err();
clog_msg_str("Unable to read message file.");
clog_msg_send();
_exit(EX_TEMPFAIL);
}
close(ctf.fd);
close(datfd);
/* Contents of host: */
/* acct!ext!uid!gid!homedir!maildir!quota */
host=p->host;
buf=strdup(host);
if (!buf)
{
clog_msg_prerrno();
_exit(EX_TEMPFAIL);
}
s=strchr(buf, '!');
username=buf;
if (s) *s++=0;
ext=s;
if (s) s=strchr(s, '!');
if (s) *s++=0;
u=0;
while (s && *s != '!')
{
if (isdigit((int)(unsigned char)*s))
u=u*10 + (*s - '0');
++s;
}
if (s) *s++=0;
g=0;
while (s && *s != '!')
{
if (isdigit((int)(unsigned char)*s))
g=g*10 + (*s - '0');
++s;
}
if (s) *s++=0;
homedir=s;
if (s) s=strchr(s, '!');
if (s) *s++=0;
maildir=s;
if (s) s=strchr(s, '!');
if (s) *s++=0;
quota=s;
if (!s)
{
clog_msg_start_err();
clog_msg_str("Invalid local recipient address.");
clog_msg_send();
_exit(EX_TEMPFAIL);
}
if (chdir(homedir))
{
clog_msg_str(homedir);
clog_msg_str(": ");
clog_msg_prerrno();
_exit(EX_TEMPFAIL);
}
libmail_changeuidgid(u, g);
execl( MODULEDIR "/local/courierdeliver",
"courierdeliver",
username,
homedir,
ext,
ctf.receipients[rcptnum],
verp_getsender(&ctf, ctf.receipients[rcptnum]),
quota,
maildir,
(const char *)0);
clog_msg_start_err();
clog_msg_prerrno();
clog_msg_send();
_exit(EX_TEMPFAIL);
}
close(pipe1[1]);
close(pipe2[1]);
libmail_changeuidgid(MAILUID, MAILGID);
if (fstat(datfd, &stat_buf) == 0)
ctf.msgsize=stat_buf.st_size;
close(datfd);
wait_delivery(pid, &ctf, rcptnum, pipe2[0], pipe1[0],
p->host, p->receipients[1]);
ctlfile_close(&ctf);
_exit(0);
}
return (0);
}
void msgq::queuescan()
{
static int queuescan_flag=0;
if (queuescan_flag) return;
// Recursive invocation if message just pulled into queue
// has been delivered to all of its recipients.
nextqueuefill=0;
#if 0
clog_msg_start_info();
clog_msg_str("queue scan");
clog_msg_send();
#endif
try
{
std::list<std::string> subdirlist;
DIR *tmpdir=opendir(MSGQDIR);
struct dirent *de;
std::string s;
queuescan_flag=1;
if (!tmpdir) clog_msg_errno();
time(¤t_time);
while ((de=readdir(tmpdir)) != 0)
{
const char *p;
for (p=de->d_name; *p; p++)
if (!isdigit((int)(unsigned char)*p)) break;
if (*p) continue; // Subdirs must be named all digits
p=de->d_name;
time_t n=strtotime(p);
std::list<std::string>::iterator sb, se;
sb=subdirlist.begin();
se=subdirlist.end();
while (sb != se)
{
if (strtotime(sb->c_str()) > n)
break;
++sb;
}
subdirlist.insert(sb, de->d_name);
}
closedir(tmpdir);
while (!subdirlist.empty())
{
s=MSGQDIR "/";
s += subdirlist.front();
subdirlist.pop_front();
if (queuescan2(s) <= 0) break;
// Stop if we can't add any more msgs
}
queuescan_flag=0;
}
catch (...)
{
queuescan_flag=0;
throw;
}
}
int submit_fork_virtual(char **args, char **env,
void (*func)(const char *))
{
int pipe0[2], pipe1[2];
printfunc=func;
submit_error=1;
log_error_prefix_func=0;
if (pipe(pipe0))
{
clog_msg_start_err();
clog_msg_str(LIBEXECDIR "/courier/submit: ");
clog_msg_str(strerror(errno));
clog_msg_send();
return (-1);
}
if (pipe(pipe1))
{
close(pipe0[0]);
close(pipe0[1]);
clog_msg_start_err();
clog_msg_str(LIBEXECDIR "/courier/submit: ");
clog_msg_str(strerror(errno));
clog_msg_send();
return (-1);
}
submit_pid=fork();
if ( submit_pid == 0)
{
static char execfailed[]="400 Unable to submit message - service temporarily unavailable.\n";
close(pipe0[1]);
close(pipe1[0]);
dup2(pipe0[0], 0);
dup2(pipe1[1], 1);
close(pipe0[0]);
close(pipe1[1]);
if (chdir(courierdir()))
exit(1);
execve( LIBEXECDIR "/courier/submit", args, env );
clog_msg_start_err();
clog_msg_str(LIBEXECDIR "/courier/submit: ");
clog_msg_str(strerror(errno));
clog_msg_send();
if (write(1, execfailed, sizeof(execfailed)-1) != 1)
; /* ignore */
exit(1);
}
close(pipe0[0]);
close(pipe1[1]);
if (submit_pid == -1)
{
clog_msg_start_err();
clog_msg_str(LIBEXECDIR "/courier/submit: ");
clog_msg_str(strerror(errno));
clog_msg_send();
close(pipe0[1]);
close(pipe1[0]);
return (-1);
}
if (fcntl(pipe0[1], F_SETFD, FD_CLOEXEC) ||
(submit_to=fdopen(pipe0[1], "w")) == NULL)
{
clog_msg_start_err();
clog_msg_str(LIBEXECDIR "/courier/submit: ");
clog_msg_str(strerror(errno));
clog_msg_send();
close(pipe0[1]);
close(pipe1[0]);
(void)submit_wait_noreset();
return (-1);
}
if (fcntl(pipe1[0], F_SETFD, FD_CLOEXEC) ||
(fromsubmit=fdopen(pipe1[0], "r")) == NULL)
{
clog_msg_start_err();
clog_msg_str(LIBEXECDIR "/courier/submit: ");
clog_msg_str(strerror(errno));
clog_msg_send();
fclose(submit_to);
close(pipe1[0]);
(void)submit_wait_noreset();
return (-1);
}
submit_error=0;
signal(SIGINT, sighandler);
signal(SIGTERM, sighandler);
signal(SIGHUP, sighandler);
return (0);
}
int courierbmain()
{
fd_set fds, fdc;
struct mybuf trigger_buf;
clog_open_syslog("courierd");
rw_init_verbose(1);
if (rw_init_courier(0)) return (1);
drvinfo::init();
libmail_changeuidgid(MAILUID, MAILGID);
signal(SIGPIPE, SIG_IGN);
respawnlo=config_time_respawnlo();
respawnhi=config_time_respawnhi();
retryalpha=config_time_retryalpha();
retrybeta=config_retrybeta();
retrygamma=config_time_retrygamma();
retrymaxdelta=config_retrymaxdelta();
flushtime=0;
delaytime=config_time_submitdelay();
queuefill=config_time_queuefill();
nextqueuefill=0;
purgedir(MSGQDIR);
purgedir(MSGSDIR);
rmdir(MSGQDIR);
mkdir(MSGQDIR, 0755);
trackpurge();
if ((triggerw=open(triggername, O_WRONLY, 0)) < 0 ||
(triggerr=open(triggername, O_RDONLY, 0)) < 0)
clog_msg_errno();
time(&start_time);
courierbstart=start_time;
msgq::init(queuehi);
shutdown_flag=0;
FD_ZERO(&fds);
unsigned nd;
int maxfd=triggerr;
FD_SET(maxfd, &fds);
mybuf_init(&trigger_buf, triggerr);
for (nd=0; nd<drvinfo::nmodules; nd++)
{
int fd=drvinfo::modules[nd].module_from.fd;
if (fd > maxfd) maxfd=fd;
FD_SET(fd, &fds);
}
++maxfd;
time_t current_time, next_time, shutdown_time;
current_time=start_time;
shutdown_time=0;
msgq::queuescan(); // Initial queue scan
int doscantmp=1;
////////////////////////////////////////////////////////////////////////////
//
// Main loop:
//
// A) Scan tmp for new messages.
//
// B) Schedule messages for delivery, when their time comes.
//
// C) Update statistics.
//
// D) Stop scheduling messages when restart signal received.
//
// E) Restart if there's no activity for 5 mins after we've been running
// for respawnlo amount of times.
//
// F) When we've been running for respawnhi amount of time, stop scheduling
// messages, restart when all deliveries have been completed.
//
// G) Receive delivery completion messages from modules.
//
////////////////////////////////////////////////////////////////////////////
for (;;)
{
msgq *mp;
if (shutdown_flag)
doscantmp=0;
if (doscantmp)
doscantmp=msgq::tmpscan();
if (shutdown_flag && msgq::inprogress == 0)
break;
if (current_time >= start_time + respawnhi && !shutdown_flag)
{
clog_msg_start_info();
clog_msg_str("SHUTDOWN: respawnhi limit reached.");
clog_msg_send();
shutdown_flag=1;
continue;
}
if (diskspacelow() && msgq::queuehead &&
msgq::queuehead->nextsenddel <= current_time)
{
clog_msg_start_err();
clog_msg_str("Low on disk space.");
clog_msg_send();
for (mp=msgq::queuehead; mp &&
mp->nextsenddel <= current_time + 300;
mp=mp->next)
mp->nextsenddel=current_time+300;
}
if (!shutdown_flag)
{
while ((mp=msgq::queuehead) != 0 &&
mp->nextsenddel <= current_time)
{
mp->removewq();
mp->start_message();
}
}
if (nextqueuefill && nextqueuefill <= current_time)
{
nextqueuefill=0;
if (!shutdown_flag)
{
msgq::queuescan();
}
}
next_time=0;
if ( msgq::queuehead && msgq::queuehead->nextsenddel
> current_time)
next_time=msgq::queuehead->nextsenddel;
if (!shutdown_flag && msgq::inprogress == 0 &&
shutdown_time == 0)
{
shutdown_time=current_time + 5 * 60;
if (shutdown_time < start_time + respawnlo)
shutdown_time=start_time + respawnlo;
}
if (shutdown_time && (next_time == 0 ||
shutdown_time < next_time))
next_time=shutdown_time;
if (nextqueuefill)
{
/* Or, wake up next time we need to refill the queue */
if (next_time == 0 || nextqueuefill < next_time)
{
next_time=nextqueuefill;
}
}
fdc=fds;
struct timeval tv;
if (next_time)
{
tv.tv_sec= next_time > current_time ?
next_time - current_time:0;
tv.tv_usec=0;
}
#if 1
{
char buf[40];
clog_msg_start_info();
clog_msg_str("Waiting. shutdown time=");
strcpy(buf, shutdown_time ? ctime(&shutdown_time):"none\n");
*strchr(buf, '\n')=0;
clog_msg_str(buf);
clog_msg_str(", wakeup time=");
strcpy(buf, next_time ? ctime(&next_time):"none\n");
*strchr(buf, '\n')=0;
clog_msg_str(buf);
clog_msg_str(", queuedelivering=");
clog_msg_int(msgq::queuedelivering);
clog_msg_str(", inprogress=");
clog_msg_int(msgq::inprogress);
clog_msg_send();
}
#endif
while (select(maxfd, &fdc, (fd_set *)0, (fd_set *)0,
(next_time && doscantmp == 0 ?
&tv:(struct timeval *)0)) < 0)
{
if (errno != EINTR) clog_msg_errno();
}
time(¤t_time);
if (shutdown_time)
{
if (current_time >= shutdown_time &&
msgq::inprogress == 0)
{
clog_msg_start_info();
clog_msg_str("SHUTDOWN: respawnlo limit reached, system inactive.");
clog_msg_send();
shutdown_flag=1;
}
shutdown_time=0;
}
/* Handle commands sent via the trigger pipe */
if (FD_ISSET(triggerr, &fdc))
{
unsigned l;
char cmdbuf[256];
int c;
do
{
l=0;
do
{
c=mybuf_get(&trigger_buf);
if (l < sizeof(cmdbuf)-1)
cmdbuf[l++]=c;
} while (c != '\n');
cmdbuf[l]=0;
if (strcmp(cmdbuf, TRIGGER_NEWMSG) == 0)
doscantmp=1;
else if (strcmp(cmdbuf, TRIGGER_RESTART) == 0)
{
shutdown_flag=1;
clog_msg_start_info();
clog_msg_str("SHUTDOWN: Restarting...");
clog_msg_send();
}
else if (strcmp(cmdbuf, TRIGGER_STOP) == 0)
{
clog_msg_start_info();
clog_msg_str("SHUTDOWN: Stopping...");
clog_msg_send();
_exit(99);
}
else if (strcmp(cmdbuf, TRIGGER_FLUSH) == 0)
{
flushtime=current_time;
for (mp=msgq::queuehead; mp;
mp=mp->next)
mp->nextsenddel=current_time;
}
else if (strncmp(cmdbuf, TRIGGER_FLUSHMSG,
sizeof(TRIGGER_FLUSHMSG)-1) == 0)
{
char *p;
ino_t n;
if ((p=strchr(cmdbuf, '\n')) != 0)
*p=0;
p=cmdbuf+sizeof(TRIGGER_FLUSHMSG)-1;
while (*p == ' ') ++p;
if (comparseqid(p, &n) == 0 &&
!shutdown_flag)
msgq::flushmsg(n, p);
}
} while (mybuf_more(&trigger_buf));
}
for (nd=0; nd<drvinfo::nmodules; nd++)
{
struct mybuf *p= &drvinfo::modules[nd].module_from;
size_t delnum;
int c;
if (!FD_ISSET(p->fd, &fdc)) continue;
do
{
delnum=0;
while (errno=0, ((c=mybuf_get(p)) != '\n'))
{
if (c < 0)
{
if (errno == EINTR)
continue;
clog_msg_start_err();
clog_msg_str("MODULE ");
clog_msg_str(
drvinfo::modules[nd]
.module->name);
clog_msg_str(" ABORTED.");
clog_msg_send();
_exit(1);
}
if (c >= '0' && c <= '9')
delnum=delnum * 10 + (c-'0');
}
msgq::completed(drvinfo::modules[nd], delnum);
} while (mybuf_more(p));
if (!shutdown_flag) shutdown_time=0;
}
}
close(triggerr);
close(triggerw);
drvinfo::cleanup();
return (0);
}
void msgq::start_message()
{
//
// Schedule deliveries for this message.
//
#if 0
clog_msg_start_info();
clog_msg_str("Start message ");
logmsgid(this);
clog_msg_send();
#endif
size_t n=rcptinfo_list.size();
if (n == 0)
{
done(this, 0);
return;
}
size_t i;
for (i=0; i<n; i++)
{
rcptinfo &ri=rcptinfo_list[i];
drvinfo *drvp=ri.delmodule;
dlvrhost *hostp, *freehostp=0;
//
// Check if the same host has any deliveries in progress, or pending.
// Search the hdlvrpfree/hdlvrplast link list for this host.
//
for (hostp=drvp->hdlvrplast; hostp; hostp=hostp->prev)
{
if (hostp->hostname == ri.delhost)
{
#if 0
clog_msg_start_info();
clog_msg_str("Found host ");
clog_msg_str(ri.delhost);
clog_msg_str(", # of deliveries=");
clog_msg_uint(hostp->dlvrcount);
clog_msg_send();
#endif
break;
}
//
// Just in case we don't find it, remember the last host at the end of the
// MRU list which does not have any deliveries in progress.
//
if (!freehostp &&
drvp->hdlvrpfree == 0 && hostp->dlvrcount == 0)
freehostp=hostp;
// Recycle a host struct used longest ago
}
if (!hostp)
{
//
// Did not find this host.
//
if (drvp->hdlvrpfree)
{
//
// There's an unused host structure, take it.
//
hostp=drvp->hdlvrpfree;
drvp->hdlvrpfree=hostp->next;
}
else if (freehostp)
{
//
// Recycle a host structure for a host without any current deliveries,
// remove it from the MRU list.
//
hostp=freehostp;
if (hostp->next)
hostp->next->prev=hostp->prev;
else
drvp->hdlvrplast=hostp->prev;
if (hostp->prev)
hostp->prev->next=hostp->next;
else
drvp->hdlvrpfirst=hostp->next;
}
if (hostp)
{
//
// Ok, initialize this host, and stick it at the end of the MRU list.
//
hostp->hostname=ri.delhost;
hostp->dlvrcount=0;
hostp->next=0;
if ((hostp->prev=drvp->hdlvrplast) != 0)
drvp->hdlvrplast->next=hostp;
else
drvp->hdlvrpfirst=hostp;
drvp->hdlvrplast=hostp;
if (hostp->pending_list)
hostp->pending_list->hostp=0;
hostp->pending_list=0;
}
}
//
// Determine if we can start a new delivery. The conditions are:
// A) We found an unused host structure, and the number of deliveries in
// progress to this host is less than the maximum set for the module,
//
// AND
//
// B) The total number of current deliveries to this host is less than
// the maximum set for this module (there's an available delivery slot
// structure)
//
if (hostp && hostp->dlvrcount < drvp->maxhost &&
drvp->delpfreefirst)
{
delinfo *newdi=drvp->delpfreefirst;
drvp->delpfreefirst=newdi->freenext;
newdi->dlvrphost=hostp;
newdi->rcptlist=&ri;
ri.pending=0;
hostp->dlvrcount++;
startdelivery(drvp, newdi);
continue;
}
//
// We are unable to start the delivery at this time. At the recipient list
// to the list of pending deliveries for this host.
//
// The first thing is to make sure that this host structure has the pending
// list structure allocated.
//
pendelinfo *pi;
if (hostp)
{
if ((pi=hostp->pending_list) == 0)
{
drvp->pendelinfo_list.push_back(pendelinfo());
std::list<pendelinfo>::iterator pos=
--drvp->pendelinfo_list.end();
pi=& *pos;
pi->pos=pos;
pi->drvp=drvp;
pi->hostname=ri.delhost;
pi->hostp=hostp;
hostp->pending_list=pi;
}
}
else
{
std::list<pendelinfo>::iterator pos;
//
// We don't even have a host structure.
// That's ok, search the pendelinfo_list of this module anyway.
//
pi=0;
for (pos=drvp->pendelinfo_list.begin();
pos != drvp->pendelinfo_list.end();
++pos)
{
pi=& *pos;
if (pi->hostname == ri.delhost) break;
pi=0;
}
if (!pi)
{
drvp->pendelinfo_list.push_back(pendelinfo());
pos= --drvp->pendelinfo_list.end();
pi=& *pos;
pi->pos=pos;
pi->drvp=drvp;
pi->hostname=ri.delhost;
pi->hostp=0;
}
}
ri.pending=pi;
pi->receipient_list.push_back(&ri);
ri.pendingpos= --pi->receipient_list.end();
}
}
static void fax(struct moduledel *p)
{
struct ctlfile ctf;
unsigned nreceipients=p->nreceipients;
const char *host=p->host;
const char *receipient;
unsigned nrecipient=(unsigned)atol(p->receipients[0]);
int pipefd[2];
pid_t child_proc;
int faxopts;
int n_cover_pages;
FILE *fp;
struct faxconv_err_args err_args;
struct sort_file_list *page_list, *pp;
#if HAVE_SETPGRP
#if SETPGRP_VOID
setpgrp();
#else
setpgrp(0, 0);
#endif
#else
#if HAVE_SETPGID
setpgid(0, 0);
#endif
#endif
if (comgetfaxopts(host, &faxopts))
{
clog_msg_start_err();
clog_msg_str("courierfax: FATAL: invalid host");
clog_msg_send();
exit(1);
}
putenv(faxopts & FAX_LOWRES ? "FAXRES=lo":"FAXRES=hi");
if (nreceipients != 1)
{
clog_msg_start_err();
clog_msg_str("courierfax: FATAL: # receipients must be 1");
clog_msg_send();
exit(1);
}
receipient=p->receipients[1];
nrecipient=(unsigned)atol(p->receipients[0]);
if (ctlfile_openi(p->inum, &ctf, 0))
clog_msg_errno();
/* Convert message to fax format, use a child process */
signal(SIGTERM, faxabort);
if (pipe(pipefd) < 0)
{
clog_msg_errno();
}
child_proc=fork();
if (child_proc < 0)
{
clog_msg_errno();
return;
}
if (child_proc == 0)
{
const char *fn;
close(0);
if (open("/dev/null", O_RDONLY) != 0)
clog_msg_errno();
close(pipefd[0]);
close(1);
if (dup(pipefd[1]) != 1)
{
perror("dup");
exit(1);
}
close(2);
if (dup(pipefd[1]) != 2)
{
fprintf(stderr, "ERROR: dup failed\n");
exit(1);
}
close(pipefd[1]);
libmail_changeuidgid(MAILUID, MAILGID);
fn=qmsgsdatname(p->inum);
if (faxconvert(fn, faxopts, &n_cover_pages))
exit (1);
if ((fp=fopen(FAXTMPDIR "/.ncoverpages", "w")) == NULL ||
fprintf(fp, "%d\n", n_cover_pages) < 0 ||
fflush(fp) < 0)
exit(1);
fclose(fp);
exit(0);
}
close(pipefd[1]);
err_args.ctf= &ctf;
err_args.nreceip=nrecipient;
if (read_childerrmsg(child_proc, pipefd[0],
&faxconvert_cleanup, &err_args))
{
ctlfile_close(&ctf);
return;
}
/* Hit it */
if ((fp=fopen(FAXTMPDIR "/.ncoverpages", "r")) == NULL ||
fscanf(fp, "%d", &n_cover_pages) != 1)
{
if (fp)
fclose(fp);
ctlfile_append_reply(err_args.ctf,
err_args.nreceip,
"Internal error: cannot read number of cover pages",
COMCTLFILE_DELFAIL, 0);
ctlfile_close(&ctf);
exit(0);
}
page_list=read_dir_sort_filenames(FAXTMPDIR, FAXTMPDIR "/");
if (!page_list)
{
clog_msg_start_err();
clog_msg_str("courierfax: INTERNAL ERROR - no pages to xmit.");
clog_msg_send();
exit(1);
}
/* Keep trying until the modem line is unlocked */
do
{
if (pipe(pipefd) < 0)
{
clog_msg_errno();
}
child_proc=fork();
if (child_proc < 0)
{
clog_msg_errno();
return;
}
if (child_proc == 0)
{
unsigned page_cnt=0;
char **argvec;
close(pipefd[0]);
close(0);
if (open("/dev/null", O_RDONLY) != 0)
{
perror("/dev/null");
exit(1);
}
close(1);
if (dup(pipefd[1]) != 1)
{
perror("dup");
exit(1);
}
close(2);
if (dup(pipefd[1]) != 2)
{
fprintf(stderr, "ERROR: dup failed\n");
exit(1);
}
close(pipefd[1]);
for (pp=page_list; pp; pp=pp->next)
++page_cnt;
#if 0
while (page_list)
{
unlink(page_list->filename);
page_list=page_list->next;
}
exit(0);
#endif
argvec=(char **)courier_malloc(sizeof(char *)*
(page_cnt+10));
argvec[0]=SENDFAX;
argvec[1]="-v";
argvec[2]="-r";
page_cnt=3;
if (faxopts & FAX_LOWRES)
argvec[page_cnt++]="-n";
argvec[page_cnt++]=(char *)receipient;
while (page_list)
{
argvec[page_cnt++]=page_list->filename;
page_list=page_list->next;
}
argvec[page_cnt]=0;
execv(SENDFAX, argvec);
perror(SENDFAX);
exit(1);
}
close(pipefd[1]);
err_args.ctf= &ctf;
err_args.nreceip=nrecipient;
err_args.file_list=page_list;
err_args.is_locked=0;
err_args.n_cover_pages=n_cover_pages;
if (read_childerrmsg(child_proc, pipefd[0],
&faxsend_cleanup, &err_args) == 0)
{
size_t npages=0;
char fmtbuf[NUMBUFSIZE];
char fmtbuf1[NUMBUFSIZE];
char fmtbuf2[NUMBUFSIZE+100];
for (pp=page_list; pp; pp=pp->next)
++npages;
libmail_str_size_t(npages, fmtbuf);
libmail_str_size_t(n_cover_pages, fmtbuf1);
sprintf(fmtbuf2,
"%s pages - including %s cover page(s)"
" - sent by fax.", fmtbuf, fmtbuf1);
ctlfile_append_reply(&ctf, (unsigned)
nrecipient,
fmtbuf2,
COMCTLFILE_DELSUCCESS, " l");
break;
}
} while (err_args.is_locked);
ctlfile_close(&ctf);
rmdir_contents(FAXTMPDIR);
}
void SubmitFile::openctl()
{
std::string filename;
ctlfile.close();
if (num_control_files_created == 0) // First recipient
{
for (;;)
{
const char *timeptr, *pidptr, *hostnameptr;
getnewtmpfilenameargs(&timeptr, &pidptr,
&hostnameptr);
filename=name1stctlfile();
current_submit_file=this;
int nfd=open(filename.c_str(),
O_WRONLY | O_TRUNC | O_CREAT | O_EXCL | O_APPEND,
PERMISSION);
if (nfd >= 0)
ctlfile.fd(nfd);
if (nfd >= 0 || errno != EEXIST)
break;
current_submit_file=0;
sleep(3);
}
++num_control_files_created;
if (ctlfile.fd() < 0)
{
//
// One reason why we may not be able to create it
// would be if the subdirectory, based on current time,
// does not exist, so fork a tiny program to create it,
// with the right permissions
//
pid_t p=fork();
pid_t w;
int wait_stat;
if (p == -1)
{
clog_msg_start_err();
clog_msg_str("fork: ");
clog_msg_errno();
}
if (p == 0)
{
filename=std::string(filename.begin(),
std::find(filename.begin()
, filename.end()
, '/'));
execl(LIBEXECDIR "/courier/submitmkdir",
"submitmkdir", filename.c_str(),
(char *)0);
exit(0);
}
while ((w=wait(&wait_stat)) != p)
if (w == -1 && errno == ECHILD) break;
int nfd=open(filename.c_str(),
O_WRONLY | O_TRUNC | O_CREAT | O_EXCL | O_APPEND,
PERMISSION);
if (nfd >= 0)
ctlfile.fd(nfd);
}
}
else
{
++num_control_files_created;
filename=namefile("C", num_control_files_created);
int nfd=open(filename.c_str(),
O_WRONLY | O_TRUNC | O_CREAT | O_EXCL | O_APPEND,
PERMISSION);
if (nfd >= 0)
ctlfile.fd(nfd);
}
if (ctlfile.fd() < 0) clog_msg_errno();
struct stat stat_buf;
char ino_buf[sizeof(ino_t)*2+1];
if (fstat(ctlfile.fd(), &stat_buf) != 0)
clog_msg_errno();
rcptcount=0;
if (num_control_files_created == 1)
{
char time_buf[sizeof(time_t)*2+1];
char pid_buf[sizeof(time_t)*2+1];
char msgidbuf[sizeof(time_buf)+sizeof(pid_buf)];
ctltimestamp=stat_buf.st_mtime;
ctlpid=getpid();
strcat(strcat(strcpy(msgidbuf,
libmail_strh_time_t(ctltimestamp, time_buf)), "."),
libmail_strh_pid_t(getpid(), pid_buf));
basemsgid=msgidbuf;
ctlinodenum=stat_buf.st_ino;
}
libmail_strh_ino_t( stat_buf.st_ino, ino_buf );
ctlfile << COMCTLFILE_SENDER << sender << std::endl
<< COMCTLFILE_FROMMTA << frommta << std::endl
<< COMCTLFILE_ENVID << envid << std::endl
<< COMCTLFILE_DSNFORMAT << dsnformat << std::endl
<< COMCTLFILE_MSGID << ino_buf << '.' << basemsgid << std::endl;
if (submitdelay)
ctlfile << COMCTLFILE_SUBMITDELAY << submitdelay << std::endl;
ctlfile << std::flush;
}
static int faxsend_cleanup(int errcode, char *errmsg, void *vp)
{
struct faxconv_err_args *args=(struct faxconv_err_args *)vp;
unsigned pages_sent=0;
char *p, *q;
int i;
time_t now_time;
unsigned coverpage_cnt=0;
unsigned page_cnt=0;
/* Check how many files sendfax renamed (were succesfully sent) */
while (args->file_list)
{
if (access(args->file_list->filename, 0) == 0)
break;
if (coverpage_cnt < args->n_cover_pages)
++coverpage_cnt;
else
++pages_sent;
args->file_list=args->file_list->next;
}
/* Strip out any blank lines in captured output from sendfax */
for (p=q=errmsg; *p; p++)
{
if (*p == '\n' && (p[1] == '\n' || p[1] == 0))
continue;
*q++=*p;
}
*q=0;
/* Find the last message from sendfax */
for (p=q=errmsg; *p; p++)
{
if (*p != '\n')
continue;
*p=0;
/* Dump sendfax's output to the log */
if (*q)
{
clog_msg_start_info();
clog_msg_str("courierfax: " SENDFAX ": ");
clog_msg_str(q);
clog_msg_send();
}
q=p+1;
}
if (*q) /* Last line of the error message */
{
clog_msg_start_info();
clog_msg_str("courierfax: " SENDFAX ": ");
clog_msg_str(q);
clog_msg_send();
}
else /* Default message */
{
q=SENDFAX ": completed.";
}
/*
** Ugly hack: capture the following message from sendfax:
**
** /usr/sbin/sendfax: cannot access fax device(s) (locked?)
*/
#if 0
lockflag=0;
p=strchr(q, ':');
if (p)
{
static const char msg1[]="cannot access fax device";
static const char msg2[]="locked";
++p;
while (*p && isspace((int)(unsigned char)*p))
p++;
if (*p && strncasecmp(p, msg1, sizeof(msg1)-1) == 0)
{
p += sizeof(msg1);
while (*p && !isspace((int)(unsigned char)*p))
++p;
p=strchr(p, '(');
if (p && strncmp(p+1, msg2, sizeof(msg2)-1) == 0)
{
args->is_locked=1;
clog_msg_start_info();
clog_msg_str("courierfax: detected locked"
" modem line, sleeping...");
clog_msg_send();
sleep(60);
return (-1);
}
}
}
#else
if (errcode == 2)
{
args->is_locked=1;
clog_msg_start_info();
clog_msg_str("courierfax: detected locked"
" modem line, sleeping...");
clog_msg_send();
sleep(60);
return (-1);
}
#endif
ctlfile_append_connectioninfo(args->ctf, args->nreceip,
COMCTLFILE_DELINFO_REPLY, q);
sprintf(errmsg, "%u cover pages, %u document pages sent.",
coverpage_cnt, page_cnt);
i=ctlfile_searchfirst(args->ctf, COMCTLFILE_FAXEXPIRES);
time(&now_time);
ctlfile_append_reply(args->ctf, args->nreceip,
errmsg,
(pages_sent == 0 &&
i >= 0 &&
errcode < 10 &&
now_time < strtotime(args->ctf->lines[i]+1)
? COMCTLFILE_DELDEFERRED:
COMCTLFILE_DELFAIL_NOTRACK), 0);
return (-1);
}
int msgq::queuescan3(std::string subdir, std::string name,
const char *isnewmsg)
{
struct ctlfile ctlinfo;
ino_t inum;
time_t deltime, delsendtime;
const char *p=name.c_str();
struct stat stat_buf;
++p;
inum=strtoino(p);
while (isdigit(*p)) p++;
++p;
deltime=strtotime(p);
name= subdir + '/' + name;
if (ctlfile_openfn(name.c_str(), &ctlinfo, 0, 1))
{
if (errno)
{
clog_msg_start_err();
clog_msg_str("Cannot read ");
clog_msg_str(name.c_str());
clog_msg_send();
clog_msg_prerrno();
}
return (0);
}
delsendtime=deltime;
if (flushtime && ctlinfo.mtime < flushtime && flushtime < deltime)
delsendtime=flushtime;
if (!queuefree)
{
msgq *p;
//
// msgq array is full. See if we can remove the last message from the
// pending queue.
p=queuetail;
if (p && p->nextsenddel > delsendtime)
{
#if 0
clog_msg_start_info();
clog_msg_str("Removing ");
clog_msg_uint(p->msgnum);
clog_msg_str(" to make room for this message.");
clog_msg_send();
#endif
p->removewq();
p->removeq();
}
}
msgq *newq=queuefree;
if (!newq)
{
ctlfile_close(&ctlinfo);
if (queuefill && nextqueuefill == 0)
{
nextqueuefill=current_time + queuefill;
}
return (1);
}
const char *cn=qmsgsctlname(inum);
if ( stat(cn, &stat_buf) == -1 )
{
unlink(name.c_str());
unlink(qmsgsdatname(inum));
unlink(cn);
ctlfile_close(&ctlinfo);
return (0);
}
#if 0
clog_msg_start_info();
clog_msg_str("Adding ");
clog_msg_uint(inum);
clog_msg_str(" to queue.");
clog_msg_send();
#endif
queuefree=newq->next;
++queuedelivering;
ino_t hashbucket=inum % queuehashfirst.size();
if (queuehashfirst[hashbucket])
queuehashfirst[hashbucket]->prevhash=newq;
else
queuehashlast[hashbucket]=newq;
newq->nexthash=queuehashfirst[hashbucket];
newq->prevhash=0;
queuehashfirst[hashbucket]=newq;
newq->nksize= (unsigned long)stat_buf.st_size;
ctlinfo.starttime=stat_buf.st_mtime;
int k=ctlfile_searchfirst(&ctlinfo, COMCTLFILE_MSGID);
newq->msgid= k < 0 ? "": ctlinfo.lines[k]+1;
newq->msgnum=inum;
newq->nextdel=deltime;
newq->nextsenddel=delsendtime;
newq->rcptinfo_list.resize(0);
newq->rcptcount=0;
newq->cancelled=ctlinfo.cancelled;
if (isnewmsg)
{
int auth;
clog_msg_start_info();
clog_msg_str("newmsg,id=");
logmsgid(newq);
auth=ctlfile_searchfirst(&ctlinfo, COMCTLFILE_AUTHNAME);
if (auth >= 0)
{
clog_msg_str(", auth=");
clog_msg_str(ctlinfo.lines[auth]+1);
}
int m=ctlfile_searchfirst(&ctlinfo, COMCTLFILE_FROMMTA);
if (m >= 0)
{
clog_msg_str(": ");
clog_msg_str(ctlinfo.lines[m]+1);
}
clog_msg_send();
}
unsigned i, j;
std::string host, addr;
k=ctlfile_searchfirst(&ctlinfo, COMCTLFILE_SENDER);
struct rfc822t *sendert=rw_rewrite_tokenize(k < 0 ? "":ctlinfo.lines[k]+1);
std::string errmsg;
for (i=0; i<ctlinfo.nreceipients; i++)
{
for (j=0; ctlinfo.lines[j]; j++)
{
switch (ctlinfo.lines[j][0]) {
case COMCTLFILE_DELSUCCESS:
case COMCTLFILE_DELFAIL:
if ((unsigned)atoi(ctlinfo.lines[j]+1) == i)
break;
// This one has been delivered
default:
continue;
}
break;
}
if (ctlinfo.lines[j]) continue;
drvinfo *module=getdelinfo(sendert->tokens,
ctlinfo.receipients[i], host, addr, errmsg);
if (!module)
{
ctlfile_append_reply(&ctlinfo, i, errmsg.c_str(),
SMTPREPLY_TYPE(errmsg.c_str()),
0);
continue;
}
/* Check if it's time to move the message to a backup relay */
if (backup_relay_driver &&
ctlfile_searchfirst(&ctlinfo, COMCTLFILE_WARNINGSENT)
>= 0 &&
strcmp(module->module->name,
backup_relay_driver->module->name) == 0)
{
// module=backup_relay_driver;
host=backup_relay;
}
/* Group all recipients for the same driver and host together */
for (j=0; j<newq->rcptcount; j++)
if (strcmp(module->module->name,
newq->rcptinfo_list[j].delmodule->
module->name) == 0 &&
newq->rcptinfo_list[j].delhost == host &&
newq->rcptinfo_list[j].addresses.size()
< module->maxrcpt )
break;
if (j == newq->rcptcount)
{
#if 0
clog_msg_start_info();
clog_msg_str("id=");
logmsgid(newq);
clog_msg_str(",new rcpt list - module=");
clog_msg_str(module->module->name);
clog_msg_str(", host=");
clog_msg_str(host);
clog_msg_send();
#endif
newq->rcptinfo_list.resize(++newq->rcptcount);
struct rw_info_rewrite rwir;
struct rw_info rwi;
rwir.buf=0;
rwir.errmsg=0;
rw_info_init(&rwi, sendert->tokens, rw_err_func);
rwi.sender=0;
rwi.mode=RW_OUTPUT|RW_ENVSENDER;
rwi.udata= (void *)&rwir;
rw_rewrite_module(module->module, &rwi,
rw_rewrite_chksyn_print);
char *address=((struct rw_info_rewrite *)rwi.udata)->buf;
char *errmsg= ((struct rw_info_rewrite *)rwi.udata)->errmsg;
if (!address)
{
ctlfile_append_reply(&ctlinfo, i, errmsg,
SMTPREPLY_TYPE(errmsg), 0);
newq->rcptinfo_list.resize(--newq->rcptcount);
free(errmsg);
continue;
}
if (errmsg) free(errmsg);
newq->rcptinfo_list[j].init(newq, module, host, address);
free(address);
}
#if 0
clog_msg_start_info();
clog_msg_str("id=");
logmsgid(newq);
clog_msg_str(",module=");
clog_msg_str(module->module->name);
clog_msg_str(", host=");
clog_msg_str(host);
clog_msg_str(", addr=<");
clog_msg_str(addr);
clog_msg_str(">");
clog_msg_send();
#endif
newq->rcptinfo_list[j].addresses.push_back(addr);
newq->rcptinfo_list[j].addressesidx.push_back(i);
}
rfc822t_free(sendert);
ctlfile_close(&ctlinfo);
if (newq->nextsenddel <= current_time ||
/*
** If there are no more recipients, we want to call done() via
** start_message. HOWEVER, if DSN injection FAILED, we want to respect
** the rescheduled delivery attempt time. We can detect that if isnewmsg == 0
*/
(newq->rcptinfo_list.size() == 0 && isnewmsg))
{
newq->start_message();
return (0);
}
msgq *qp, *qprev;
for (qprev=queuetail, qp=0; qprev; qp=qprev, qprev=qp->prev)
if (qprev->nextsenddel < newq->nextsenddel)
break;
newq->next=qp;
newq->prev=qprev;
if (qprev) qprev->next=newq;
else queuehead=newq;
if (qp) qp->prev=newq;
else queuetail=newq;
++queuewaiting;
return (0);
}
void SubmitFile::ReceipientFilter(struct rw_transport *rw,
const char *host,
const char *addr,
unsigned rcptnum)
{
if (rcptfilterlist_file.is_open())
{
rcptfilterlist_file
<< num_control_files_created - 1 << std::endl
<< rcptcount - 1 << std::endl
<< rw->name << std::endl
<< host << std::endl
<< addr << std::endl
<< rcptnum << std::endl;
return;
}
rcptfilterlist.push_back(RcptFilterInfo());
RcptFilterInfo &last_pos=rcptfilterlist.back();
last_pos.num_control_file=num_control_files_created - 1;
last_pos.num_receipient=rcptcount - 1;
last_pos.driver=rw;
last_pos.host=host;
last_pos.address=addr;
last_pos.rcptnum=rcptnum;
if (rcptfilterlist.size() > SPILLLEVEL)
{
std::string filename=namefile("R", 0);
rcptfilterlist_file.open(filename.c_str(),
std::ios::in | std::ios::out
| std::ios::trunc);
if (!rcptfilterlist_file.is_open())
{
clog_msg_start_err();
clog_msg_str(filename.c_str());
clog_msg_str(": ");
clog_msg_errno();
}
unlink(filename.c_str()); /* Immediately delete it */
std::list<RcptFilterInfo>::iterator ab, ae;
for (ab=rcptfilterlist.begin(),
ae=rcptfilterlist.end(); ab != ae; ++ab)
{
RcptFilterInfo &p= *ab;
rcptfilterlist_file << p.num_control_file << std::endl
<< p.num_receipient << std::endl
<< p.driver->name << std::endl
<< p.host << std::endl
<< p.address << std::endl
<< p.rcptnum << std::endl;
}
rcptfilterlist.clear();
}
}
static int read_resp_oneline(char *errcode, int doprint)
{
static char linebuf[BUFSIZ];
char *c;
int rc;
char prev_errcode=errcode[0];
if (submit_error ||
fgets(linebuf, sizeof(linebuf), fromsubmit) == NULL)
{
const char *errmsg="Service temporarily unavailable.";
if (!errcode[0])
strcpy(errcode, "432");
if (!submit_error)
{
submit_error=1;
clog_msg_start_err();
clog_msg_str("submitclient: EOF from submit.");
#if 0
{
const char *p=getenv("TCPREMOTEIP");
if (p)
{
clog_msg_str(" (ip: ");
clog_msg_str(p);
clog_msg_str(")");
}
}
#endif
clog_msg_send();
}
if (doprint)
{
(*printfunc)(errcode);
(*printfunc)(" ");
(*printfunc)(errmsg);
(*printfunc)(doprint & PRINT_CRLF ? "\r\n":"\n");
(*printfunc)(0);
}
return(-1);
}
if (!isdigit((int)(unsigned char)linebuf[0]) ||
!isdigit((int)(unsigned char)linebuf[1]) ||
!isdigit((int)(unsigned char)linebuf[2]) ||
(errcode[0] && strncmp(errcode, linebuf, 3)) ||
(linebuf[3] != ' ' && linebuf[3] != '-'))
{
char *p;
clog_msg_start_err();
clog_msg_str("submitclient: bad response from submit: ");
if ((p=strchr(linebuf, '\n')) != 0) *p=0;
clog_msg_str(linebuf);
if (p) *p='\n';
clog_msg_send();
if (!errcode[0])
strcpy(errcode, "432");
if (doprint)
{
(*printfunc)(errcode);
(*printfunc)(" ");
}
submit_error=1;
rc=1;
}
else
{
if (!errcode[0])
{
memcpy(errcode, linebuf, 3);
errcode[3]=0;
}
rc=0;
if (linebuf[3] == ' ') rc=1;
}
if ((c=strchr(linebuf, '\n')) != NULL) *c=0;
switch (errcode[0]) {
case '1':
case '2':
case '3':
if (doprint & PRINT_ERRORS)
doprint=0;
break;
default:
if (prev_errcode == 0 && errcode[0] == '5' &&
teergrubefunc)
{
(*teergrubefunc)();
}
if (log_error_prefix_func)
{
clog_msg_start_err();
(*log_error_prefix_func)();
clog_msg_str(linebuf);
clog_msg_send();
}
}
if (doprint)
(*printfunc)(linebuf);
if (!c)
{
int ch;
int n=0;
char buf[256];
while ((ch=getc(fromsubmit)) != '\n')
{
if (ch < 0)
{
submit_error=1;
clog_msg_start_err();
clog_msg_str("submitclient: EOF from submit.");
#if 0
{
const char *p=getenv("TCPREMOTEIP");
if (p)
{
clog_msg_str(" (ip: ");
clog_msg_str(p);
clog_msg_str(")");
}
}
#endif
clog_msg_send();
break;
}
if (doprint)
{
buf[n++]=ch;
if (n == sizeof(buf)-1)
{
buf[n]=0;
(*printfunc)(buf);
n=0;
}
}
}
if (doprint)
{
buf[n]=0;
(*printfunc)(buf);
}
}
if (doprint)
{
(*printfunc)(doprint & PRINT_CRLF ? "\r\n":"\n");
(*printfunc)(0);
}
return (rc);
}
static void perlfilter()
{
char *embedding[] = { "", WRAPPERPL };
char *args[] = { "", "0", NULL, NULL, NULL};
int exitstatus = 0;
int sock;
PerlInterpreter *my_perl;
if((my_perl = perl_alloc()) == NULL)
{
fprintf(stderr, "no memory!");
exit(1);
}
perl_construct(my_perl);
exitstatus = perl_parse(my_perl, xs_init, 2, embedding, NULL);
if (exitstatus || (exitstatus=perl_run(my_perl)) != 0)
{
fprintf(stderr, "Cannot parse " WRAPPERPL "\n");
exit(exitstatus);
}
while ((sock=lf_accept(listen_sock)) >= 0)
{
char sockbuf[100];
args[0]=filter;
sprintf(sockbuf, "%d", sock);
args[2]=sockbuf;
{
dSP ;
ENTER ;
SAVETMPS ;
perl_call_argv("Embed::Persistent::eval_file",
G_VOID | G_DISCARD | G_EVAL, args);
#ifdef ERRSV
if(SvTRUE(ERRSV))
#else
if(SvTRUE(GvSV(errgv)))
#endif
{
clog_open_syslog("perlfilter");
clog_msg_start_err();
clog_msg_str("eval error: ");
#ifdef ERRSV
clog_msg_str(SvPV(ERRSV,PL_na));
#else
clog_msg_str(SvPV(GvSV(errgv),na));
#endif
clog_msg_send();
}
FREETMPS ;
LEAVE ;
}
close(sock); /* Just in case */
}
#ifdef perl_destruct_level
perl_destruct_level=0;
#else
PL_perl_destruct_level=0;
#endif
perl_destruct(my_perl);
perl_free(my_perl);
exit(0);
}
static void esmtpparent()
{
unsigned i;
fd_set fdc, fds;
time_t current_time;
libmail_changeuidgid(MAILUID, MAILGID);
module_init(&terminated_child);
if ((info=(struct esmtpchildinfo *)malloc(sizeof(*info)*
module_nchildren)) == 0)
clog_msg_errno();
for (i=0; i<module_nchildren; i++)
{
info[i].pid= -1;
info[i].cmdpipe= -1;
info[i].host=0;
info[i].pendel=0;
}
if (pipe(completionpipe) < 0)
clog_msg_errno();
if ((childresultpipe=fdopen(completionpipe[0], "r")) == 0)
clog_msg_errno();
FD_ZERO(&fdc);
FD_SET(0, &fdc);
FD_SET(completionpipe[0], &fdc);
mybuf_init(&courierdbuf, 0);
mybuf_init(&childbuf, completionpipe[0]);
module_blockset();
time(¤t_time);
for (;;)
{
time_t wait_time;
struct timeval tv;
wait_time=0;
for (i=0; i<module_nchildren; i++)
{
if (!ESMTP_IDLE(&info[i])) continue;
if (info[i].termtime <= current_time)
{
close(info[i].cmdpipe);
info[i].cmdpipe= -1;
continue;
}
if (wait_time == 0 || info[i].termtime < wait_time)
wait_time=info[i].termtime;
}
if (wait_time)
{
tv.tv_sec= wait_time - current_time;
tv.tv_usec=0;
}
fds=fdc;
module_blockclr();
while (select(completionpipe[0]+1, &fds, (fd_set *)0, (fd_set *)0,
(wait_time ? &tv:(struct timeval *)0)) < 0)
{
if (errno != EINTR) clog_msg_errno();
}
module_blockset();
time(¤t_time);
if (FD_ISSET(completionpipe[0], &fds))
{
char *line;
do
{
pid_t p;
line=module_getline( &call_mybuf_get,
&childbuf);
if (parse_ack(line, &i, &p) ||
i >= module_nchildren ||
(p == info[i].pid &&
!ESMTP_BUSY(&info[i])))
{
clog_msg_start_err();
clog_msg_str("INVALID message from child process.");
clog_msg_send();
_exit(0);
}
if (p != info[i].pid) continue;
info[i].isbusy=0;
info[i].termtime=current_time + esmtpkeepalive;
if (info[i].pendel)
{
free(info[i].pendel);
info[i].pendel=0;
}
module_completed(i, module_delids[i]);
} while (mybuf_more(&childbuf));
}
if (!FD_ISSET(0, &fds)) continue;
do
{
char **cols;
const char *hostp;
size_t hostplen;
time_t misctime;
unsigned j;
char *line;
line=module_getline( &call_mybuf_get, &courierdbuf);
if (!line)
{
module_restore();
/*
** If all processes are idle, wait for them
** to finish normally. Otherwise, kill
** the processes.
*/
for (j=0; j<module_nchildren; j++)
if (ESMTP_BUSY(&info[j]))
break;
if (j < module_nchildren)
{
for (j=0; j<module_nchildren; j++)
if (info[j].pid > 0)
kill(info[j].pid,
SIGTERM);
}
else
{
int waitstat;
for (j=0; j<module_nchildren; j++)
{
if (info[j].cmdpipe > 0)
{
close(info[j].cmdpipe);
info[j].cmdpipe= -1;
}
}
while (wait(&waitstat) != -1 ||
errno == EINTR)
;
}
_exit(0);
}
cols=module_parsecols(line);
if (!cols) _exit(0);
hostp=MODULEDEL_HOST(cols);
for (hostplen=0; hostp[hostplen] &&
hostp[hostplen] != '\t'; hostplen++)
;
for (i=0; i<module_nchildren; i++)
{
if (!ESMTP_IDLE(&info[i])) continue;
if (memcmp(info[i].host, hostp, hostplen) == 0
&& info[i].host[hostplen] == 0)
break;
}
if (i < module_nchildren) /* Reuse a process */
{
send_child(i, line, cols);
continue;
}
for (i=0; i<module_nchildren; i++)
if (ESMTP_NOCHILD(&info[i])) break;
if (i < module_nchildren) /* We can fork */
{
start_child(i, line, cols);
send_child(i, line, cols);
continue;
}
/*
** Find a process that's been idled the longest,
** and reuse that one.
*/
misctime=0;
j=0;
for (i=0; i<module_nchildren; i++)
{
if (ESMTP_IDLE(&info[i]) &&
(misctime == 0 || misctime >
info[i].termtime))
{
j=i;
misctime=info[i].termtime;
}
}
if (misctime)
{
if (info[j].pendel)
{
clog_msg_start_err();
clog_msg_str("INTERNAL ERROR: unexpected scheduled delivery.");
clog_msg_send();
_exit(1);
}
info[j].pendel=strcpy(
courier_malloc(strlen(line)+1),
line);
close(info[j].cmdpipe);
info[j].cmdpipe= -1;
continue;
}
/* The ONLY remaining possibility is something in
** the TERMINATING stage, without another delivery
** already scheduled for that slot.
*/
for (i=0; i<module_nchildren; i++)
{
if (ESMTP_TERMINATING(&info[i]) &&
info[i].pendel == 0)
break;
}
if (i < module_nchildren)
{
info[i].pendel=strcpy(
courier_malloc(strlen(line)+1),
line);
continue;
}
clog_msg_start_err();
clog_msg_str("INTERNAL ERROR: unexpected delivery.");
clog_msg_send();
_exit(1);
} while (mybuf_more(&courierdbuf));
}
}