3 * - check all init functions called
4 * - check ipf->inprogress managed properly
6 * - actually implement badusage
7 * - options for all options
9 * - pid, sitename, hostname in lockfile
14 * Newsfeeds file entries should look like this:
15 * host.name.of.site[/exclude,exclude,...]\
16 * :pattern,pattern...[/distribution,distribution...]\
20 * sitename[/exclude,exclude,...]\
21 * :pattern,pattern...[/distribution,distribution...]\
27 * or might be blanked out
28 * <spc><spc><spc><spc>....
30 * F site.name main feed file
31 * opened/created, then written, by innd
34 * tokens blanked out by duct when processed
35 * site.name_lock lock preventing multiple ducts
36 * to hold lock must open,F_SETLK[W]
37 * and then stat to check that locked file
38 * still has name site.name_lock
39 * holder of this lock is "duct"
40 * (only) lockholder may remove the lockfile
41 * D site.name_flushing temporary feed file during flush (or crash)
42 * hardlink created by duct
44 * site.name_defer 431'd articles, still being written,
45 * created, written, used by duct
47 * site.name_backlog.<date>.<inum>
48 * 431'd articles, ready for innxmit or duct
49 * created (link/mv) by duct
50 * site.name_backlog<anything-else> (where <anything-else> does not
51 * contain '#' or '~') eg
52 * site.name_backlog.manual
53 * anything the sysadmin likes (eg, feed files
54 * from old feeds to be merged into this one)
55 * created (link/mv) by admin
56 * may be symlinks (in which case links
57 * may be written through, but only links
60 * It is safe to remove backlog files manually,
61 * if it's desired to throw away the backlog.
63 * Backlog files are also processed by innduct. We find the oldest
64 * backlog file which is at least a certain amount old, and feed it
65 * back into our processing. When every article in it has been read
66 * and processed, we unlink it and look for another backlog file.
68 * If we don't have a backlog file that we're reading, we close the
69 * defer file that we're writing and make it into a backlog file at
70 * the first convenient opportunity.
81 | | <----------------<---------------------------------'|
87 | F: innd writing, duct reading |
90 | | duct decides time to flush |
91 | | duct makes hardlink |
93 | V <------------------------'|
95 | F == D: innd writing, duct reading both exist |
98 | | <-----------<-------------<--'|
102 | V <---------------------. |
105 | D: innd writing, duct reading; or ENOENT | |
107 | | duct requests flush of feed | |
108 | | (others can too, harmlessly) | |
112 | D: innd flushing, duct; or ENOENT | |
114 | | inndcomm flush fails | |
115 | |`-------------------------->------------------' |
117 | | inndcomm reports no such site |
118 | |`---------------------------------------------------- | -.
120 | | innd finishes writing D, creates F | |
121 | | inndcomm reports flush successful | |
124 | Separated <----------------' |
125 | F: innd writing F!=D /
126 | D: duct reading; or ENOENT both exist /
128 | | duct gets to the end of D /
129 | | duct opens F too /
132 | F: innd writing, duct reading |
133 | D: duct finishing V
135 | | duct finishes processing D F: ENOENT
136 | V duct unlinks D D: duct reading
138 `--<--' | duct finishes
148 "duct reading" means innduct is reading the file but also
149 overwriting processed tokens.
153 * rune for printing diagrams:
155 perl -ne 'print if m/-8\<-/..m/-\>8-/; print "\f" if m/-\^L-/' backends/innduct.c |a2ps -R -B -ops
160 /*============================== PROGRAM ==============================*/
162 #define _GNU_SOURCE 1
168 #include "inndcomm.h"
170 #include "inn/list.h"
171 #include "inn/innconf.h"
174 #include <sys/types.h>
175 #include <sys/wait.h>
176 #include <sys/stat.h>
177 #include <sys/socket.h>
193 #include <oop-read.h>
195 /*----- general definitions, probably best not changed -----*/
197 #define CONNCHILD_ESTATUS_STREAM 4
198 #define CONNCHILD_ESTATUS_NOSTREAM 5
200 #define INNDCOMMCHILD_ESTATUS_FAIL 6
201 #define INNDCOMMCHILD_ESTATUS_NONESUCH 7
203 #define MAX_LINE_FEEDFILE (NNTP_MSGID_MAXLEN + sizeof(TOKEN)*2 + 10)
205 #define VA va_list al; va_start(al,fmt)
206 #define PRINTF(f,a) __attribute__((__format__(printf,f,a)))
207 #define NORET_PRINTF(f,a) __attribute__((__noreturn__,__format__(printf,f,a)))
209 /*----- doubly linked lists -----*/
211 #define ISNODE(T) struct { T *succ, *pred; } node /* must be at start */
212 #define DEFLIST(T) typedef struct { T *hd, *tl, *tp; int count; } T##List
214 #define NODE(n) (assert((void*)&(n)->node == &(n)), \
215 (struct node*)&(n)->node)
217 #define LIST_CHECKCANHAVENODE(l,n) \
218 ((void)((n) == ((l).hd))) /* just for the type check */
220 #define LIST_ADDSOMEHOW(l,n,list_addsomehow) \
221 ( LIST_CHECKCANHAVENODE(l,n), \
222 list_addsomehow((struct list*)&(l), NODE((n))), \
226 #define LIST_REMSOMEHOW(l,list_remsomehow) \
230 list_remsomehow((struct list*)&(l)) ) \
236 #define LIST_ADDHEAD(l,n) LIST_ADDSOMEHOW((l),(n),list_addhead)
237 #define LIST_ADDTAIL(l,n) LIST_ADDSOMEHOW((l),(n),list_addtail)
238 #define LIST_REMHEAD(l) LIST_REMSOMEHOW((l),list_remhead)
239 #define LIST_REMTAIL(l) LIST_REMSOMEHOW((l),list_remtail)
241 #define LIST_INIT(l) ((l).hd, list_new((struct list*)&(l)))
242 #define LIST_HEAD(l) ((typeof((l).hd))(list_head((struct list*)&(l))))
243 #define LIST_NEXT(n) ((typeof(n))list_succ(NODE((n))))
244 #define LIST_BACK(n) ((typeof(n))list_pred(NODE((n))))
246 #define LIST_REMOVE(l,n) \
247 ( LIST_CHECKCANHAVENODE(l,n), \
248 list_remove(NODE((n))), \
252 #define LIST_INSERT(l,n,pred) \
253 ( LIST_CHECKCANHAVENODE(l,n), \
254 LIST_CHECKCANHAVENODE(l,pred), \
255 list_insert((struct list*)&(l), NODE((n)), NODE((pred))), \
259 /*----- type predeclarations -----*/
261 typedef struct Conn Conn;
262 typedef struct Article Article;
263 typedef struct InputFile InputFile;
264 typedef struct XmitDetails XmitDetails;
265 typedef struct Filemon_Perfile Filemon_Perfile;
266 typedef enum StateMachineState StateMachineState;
271 /*----- function predeclarations -----*/
273 static void conn_maybe_write(Conn *conn);
274 static void conn_make_some_xmits(Conn *conn);
275 static void *conn_write_some_xmits(Conn *conn);
277 static void xmit_free(XmitDetails *d);
279 static void statemc_setstate(StateMachineState newsms, int periods,
280 const char *forlog, const char *why);
281 static void statemc_start_flush(const char *why); /* Normal => Flushing */
282 static void spawn_inndcomm_flush(const char *why); /* Moved => Flushing */
284 static void check_master_queue(void);
285 static void queue_check_input_done(void);
287 static void statemc_check_flushing_done(void);
288 static void statemc_check_backlog_done(void);
290 static void postfork(const char *what);
291 static void postfork_inputfile(InputFile *ipf);
293 static void open_defer(void);
294 static void close_defer(void);
295 static void search_backlog_file(void);
297 static void inputfile_tailing_start(InputFile *ipf);
298 static void inputfile_tailing_stop(InputFile *ipf);
300 static int filemon_init(void);
301 static void filemon_start(InputFile *ipf);
302 static void filemon_stop(InputFile *ipf);
303 static void filemon_callback(InputFile *ipf);
305 static void vconnfail(Conn *conn, const char *fmt, va_list al) PRINTF(2,0);
306 static void connfail(Conn *conn, const char *fmt, ...) PRINTF(2,3);
308 /*----- configuration options -----*/
310 static const char *sitename, *feedfile, *pathoutgoing;
311 static const char *remote_host;
312 static int quiet_multiple=0, become_daemon=1;
314 static int max_connections=10, max_queue_per_conn=200;
315 static int target_max_feedfile_size=100000;
317 static int period_seconds=60;
319 static double max_bad_data_ratio= 0.01;
320 static int max_bad_data_initial= 30;
321 /* in one corrupt 4096-byte block the number of newlines has
322 * mean 16 and standard deviation 3.99. 30 corresponds to z=+3.5 */
324 static int connection_setup_timeout=200, port=119, try_stream=1;
325 static int inndcomm_flush_timeout=100;
326 static int reconnect_delay_periods, flushfail_retry_periods, open_wait_periods;
327 static int backlog_retry_minperiods, backlog_spontaneous_rescan_periods;
328 static int spontaneous_flush_periods, need_activity_periods;
329 static const char *inndconffile;
331 static double nocheck_thresh_pct= 95.0;
332 static double nocheck_thresh; /* computed in main from _pct */
333 static double nocheck_decay_articles= 100; /* converted to _decay */
334 static double nocheck_decay; /* computed in main from _articles */
337 /*----- statistics -----*/
339 typedef enum { /* in queue in conn->sent */
340 art_Unchecked, /* not checked, not sent checking */
341 art_Wanted, /* checked, wanted sent body as requested */
342 art_Unsolicited, /* - sent body without check */
346 #define RESULT_COUNTS(RCS,RCN) \
354 #define RCI_TRIPLE_FMT_BASE "%d(id%d+bd%d+nc%d)"
355 #define RCI_TRIPLE_VALS_BASE(counts,x) \
356 counts[art_Unchecked] x \
357 + counts[art_Wanted] x \
358 + counts[art_Unsolicited] x, \
359 counts[art_Unchecked] x \
360 , counts[art_Wanted] x \
361 , counts[art_Unsolicited] x
364 #define RC_INDEX(x) RC_##x,
365 RESULT_COUNTS(RC_INDEX, RC_INDEX)
370 /*----- transmission buffers -----*/
375 xk_Malloc, xk_Const, xk_Artdata
387 /*----- core operational data structure types -----*/
390 /* This is also an instance of struct oop_readable */
391 struct oop_readable readable; /* first */
392 oop_readable_call *readable_callback;
393 void *readable_callback_user;
395 int fd; /* may be 0, meaning closed */
396 Filemon_Perfile *filemon;
399 long inprogress; /* no. of articles read but not processed */
403 int counts[art_MaxState][RCI_max];
404 int readcount_ok, readcount_blank, readcount_err;
419 #define SMS_LIST(X) \
427 enum StateMachineState {
428 #define SMS_DEF_ENUM(s) sm_##s,
429 SMS_LIST(SMS_DEF_ENUM)
432 static const char *sms_names[]= {
433 #define SMS_DEF_NAME(s) #s ,
434 SMS_LIST(SMS_DEF_NAME)
440 int fd; /* may be 0, meaning closed (during construction/destruction) */
441 int max_queue, stream, quitting;
442 int since_activity; /* periods */
443 ArticleList waiting; /* not yet told peer */
444 ArticleList priority; /* peer says send it now */
445 ArticleList sent; /* offered/transmitted - in xmit or waiting reply */
446 struct iovec xmit[CONNIOVS];
447 XmitDetails xmitd[CONNIOVS];
452 /*----- operational variables -----*/
454 static oop_source *loop;
456 static int until_connect;
457 static ConnList conns;
458 static ArticleList queue;
460 static char *path_lock, *path_flushing, *path_defer, *globpat_backlog;
462 #define SMS(newstate, periods, why) \
463 (statemc_setstate(sm_##newstate,(periods),#newstate,(why)))
465 static StateMachineState sms;
467 static InputFile *main_input_file, *flushing_input_file, *backlog_input_file;
468 static int sm_period_counter, until_backlog_nextscan;
470 static double accept_proportion;
471 static int nocheck, nocheck_reported;
473 /*========== logging ==========*/
475 static void logcore(int sysloglevel, const char *fmt, ...) PRINTF(2,3);
476 static void logcore(int sysloglevel, const char *fmt, ...) {
479 vsyslog(sysloglevel,fmt,al);
481 vfprintf(stderr,fmt,al);
487 static void logv(int sysloglevel, const char *pfx, int errnoval,
488 const char *fmt, va_list al) PRINTF(5,0);
489 static void logv(int sysloglevel, const char *pfx, int errnoval,
490 const char *fmt, va_list al) {
491 char msgbuf[256]; /* NB do not call xvasprintf here or you'll recurse */
492 vsnprintf(msgbuf,sizeof(msgbuf), fmt,al);
493 msgbuf[sizeof(msgbuf)-1]= 0;
495 if (sysloglevel >= LOG_ERR && (errnoval==EACCES || errnoval==EPERM))
496 sysloglevel= LOG_ERR; /* run by wrong user, probably */
498 logcore(sysloglevel, "<%s>%s: %s%s%s",
499 sitename, pfx, msgbuf,
500 errnoval>=0 ? ": " : "",
501 errnoval>=0 ? strerror(errnoval) : "");
504 #define diewrap(fn, pfx, sysloglevel, err, estatus) \
505 static void fn(const char *fmt, ...) NORET_PRINTF(1,2); \
506 static void fn(const char *fmt, ...) { \
508 logv(sysloglevel, pfx, err, fmt, al); \
512 #define logwrap(fn, pfx, sysloglevel, err) \
513 static void fn(const char *fmt, ...) PRINTF(1,2); \
514 static void fn(const char *fmt, ...) { \
516 logv(sysloglevel, pfx, err, fmt, al); \
520 diewrap(sysdie, " critical", LOG_CRIT, errno, 16);
521 diewrap(die, " critical", LOG_CRIT, -1, 16);
523 diewrap(sysfatal, " fatal", LOG_ERR, errno, 12);
524 diewrap(fatal, " fatal", LOG_ERR, -1, 12);
526 logwrap(syswarn, " warning", LOG_WARNING, errno);
527 logwrap(warn, " warning", LOG_WARNING, -1);
529 logwrap(notice, "", LOG_NOTICE, -1);
530 logwrap(info, " info", LOG_INFO, -1);
531 logwrap(debug, " debug", LOG_DEBUG, -1);
534 /*========== utility functions etc. ==========*/
536 static char *xvasprintf(const char *fmt, va_list al) PRINTF(1,0);
537 static char *xvasprintf(const char *fmt, va_list al) {
539 int rc= vasprintf(&str,fmt,al);
540 if (rc<0) sysdie("vasprintf(\"%s\",...) failed", fmt);
543 static char *xasprintf(const char *fmt, ...) PRINTF(1,2);
544 static char *xasprintf(const char *fmt, ...) {
546 char *str= xvasprintf(fmt,al);
551 static void perhaps_close(int *fd) { if (*fd) { close(*fd); fd=0; } }
553 static pid_t xfork(const char *what) {
557 if (child==-1) sysdie("cannot fork for %s",what);
558 if (!child) postfork(what);
559 debug("forked %s %ld", what, (unsigned long)child);
563 static void on_fd_read_except(int fd, oop_call_fd callback) {
564 loop->on_fd(loop, fd, OOP_READ, callback, 0);
565 loop->on_fd(loop, fd, OOP_EXCEPTION, callback, 0);
567 static void cancel_fd_read_except(int fd) {
568 loop->cancel_fd(loop, fd, OOP_READ);
569 loop->cancel_fd(loop, fd, OOP_EXCEPTION);
572 static void report_child_status(const char *what, int status) {
573 if (WIFEXITED(status)) {
574 int es= WEXITSTATUS(status);
576 warn("%s: child died with error exit status %d",es);
577 } else if (WIFSIGNALED(status)) {
578 int sig= WTERMSIG(status);
579 const char *sigstr= strsignal(sig);
580 const char *coredump= WCOREDUMP(status) ? " (core dumped)" : "";
582 warn("%s: child died due to fatal signal %s%s", what, sigstr, coredump);
584 warn("%s: child died due to unknown fatal signal %d%s",
585 what, sig, coredump);
587 warn("%s: child died with unknown wait status %d", status);
591 static int xwaitpid(pid_t *pid, const char *what) {
594 int r= kill(*pid, SIGKILL);
595 if (r) sysdie("cannot kill %s child", what);
597 pid_t got= waitpid(*pid, &status, WNOHANG);
598 if (got==-1) sysdie("cannot reap %s child", what);
605 static void xunlink(const char *path, const char *what) {
607 if (r) sysdie("can't unlink %s %s", path, what);
610 static time_t xtime(void) {
612 if (now==-1) sysdie("time(2) failed");
615 static void check_isreg(const struct stat *stab, const char *path,
617 if (!S_ISREG(stab->st_mode))
618 die("%s %s not a plain file (mode 0%lo)",
619 what, path, (unsigned long)stab->st_mode);
622 static void xfstat(int fd, struct stat *stab_r, const char *what) {
623 int r= fstat(fd, stab_r);
624 if (r) sysdie("could not fstat %s", what);
627 static void xfstat_isreg(int fd, struct stat *stab_r,
628 const char *path, const char *what) {
629 xfstat(fd, stab_r, what);
630 check_isreg(stab_r, path, what);
633 static void xlstat_isreg(const char *path, struct stat *stab,
634 int *enoent_r /* 0 means ENOENT is fatal */,
636 int r= lstat(path, stab);
638 if (errno==ENOENT && enoent_r) { *enoent_r=1; return; }
639 sysdie("could not lstat %s %s", what, path);
641 if (enoent_r) *enoent_r= 0;
642 check_isreg(stab, path, what);
645 static void setnonblock(int fd, int nonblocking) {
646 int r= fcntl(fd, F_GETFL); if (r<0) sysdie("setnonblocking fcntl F_GETFL");
647 if (nonblocking) r |= O_NONBLOCK;
648 else r &= ~O_NONBLOCK;
649 r= fcntl(fd, F_SETFL, r); if (r<0) sysdie("setnonblocking fcntl F_SETFL");
652 static int samefile(const struct stat *a, const struct stat *b) {
653 assert(S_ISREG(a->st_mode));
654 assert(S_ISREG(b->st_mode));
655 return (a->st_ino == b->st_ino &&
656 a->st_dev == b->st_dev);
659 static char *sanitise(const char *input) {
660 static char sanibuf[100]; /* returns pointer to this buffer! */
662 const char *p= input;
666 if (q > sanibuf+sizeof(sanibuf)-8) { strcpy(q,"'.."); break; }
668 if (!c) { *q++= '\''; *q=0; break; }
669 if (c>=' ' && c<=126 && c!='\\') { *q++= c; continue; }
670 sprintf(q,"\\x%02x",c);
676 static int isewouldblock(int errnoval) {
677 return errnoval==EWOULDBLOCK || errnoval==EAGAIN;
680 /*========== making new connections ==========*/
682 static void conn_dispose(Conn *conn) {
685 loop->cancel_fd(loop, conn->fd, OOP_WRITE);
686 loop->cancel_fd(loop, conn->fd, OOP_EXCEPTION);
688 perhaps_close(&conn->fd);
690 until_connect= reconnect_delay_periods;
693 static int connecting_sockets[2]= {-1,-1};
694 static pid_t connecting_child;
696 static void connect_attempt_discard(void) {
697 if (connecting_sockets[0])
698 cancel_fd_read_except(connecting_sockets[0]);
700 perhaps_close(&connecting_sockets[0]);
701 perhaps_close(&connecting_sockets[1]);
703 if (connecting_child) {
704 int r= kill(connecting_child, SIGTERM);
705 if (r) syswarn("failed to kill connecting child");
706 int status= xwaitpid(&connecting_child, "connect");
708 if (!(WIFEXITED(status) ||
709 (WIFSIGNALED(status) && WTERMSIG(status) == SIGKILL)))
710 report_child_status("connect", status);
714 #define PREP_DECL_MSG_CMSG(msg) \
716 memset(&msg,0,sizeof(msg)); \
717 char msg##cbuf[CMSG_SPACE(sizeof(fd))]; \
718 msg.msg_control= msg##cbuf; \
719 msg.msg_controllen= sizeof(msg##cbuf);
721 static void *connchild_event(oop_source *lp, int fd, oop_event e, void *u) {
724 conn= xmalloc(sizeof(*conn));
725 memset(conn,0,sizeof(*conn));
727 PREP_DECL_MSG_CMSG(msg);
728 struct cmsghdr *h= 0;
729 ssize_t rs= recvmsg(fd, &msg, MSG_DONTWAIT);
730 if (rs >= 0) h= CMSG_FIRSTHDR(&msg);
733 pid_t got= waitpid(connecting_child, &status, WNOHANG);
735 assert(got==connecting_child);
737 if (WIFEXITED(status)) {
738 if (WEXITSTATUS(status) != 0 &&
739 WEXITSTATUS(status) != CONNCHILD_ESTATUS_STREAM &&
740 WEXITSTATUS(status) != CONNCHILD_ESTATUS_NOSTREAM)
741 /* child already reported the problem */;
743 warn("connect: connection child exited code %d but no cmsg",
744 WEXITSTATUS(status));
745 } else if (WIFSIGNALED(status) && WTERMSIG(status) == SIGALRM) {
746 warn("connect: connection attempt timed out");
748 report_child_status("connect", status);
751 /* child is still running apparently, report the socket problem */
753 syswarn("connect: read from child socket failed");
754 else if (e == OOP_EXCEPTION)
755 warn("connect: unexpected exception on child socket");
757 warn("connect: unexpected EOF on child socket");
759 fatal("connect: unexpected lack of cmsg from child");
764 #define CHK(field, val) \
765 if (h->cmsg_##field != val) { \
766 die("connect: child sent cmsg with cmsg_" #field "=%d, expected %d"); \
769 CHK(level, SOL_SOCKET);
770 CHK(type, SCM_RIGHTS);
771 CHK(len, CMSG_LEN(sizeof(conn->fd)));
774 if (CMSG_NXTHDR(&msg,h)) die("connect: child sent many cmsgs");
776 memcpy(&conn->fd, CMSG_DATA(h), sizeof(conn->fd));
777 loop->on_fd(loop, conn->fd, OOP_EXCEPTION, conn_exception, conn);
780 pid_t got= waitpid(connecting_child, &status, 0);
781 if (got==-1) sysdie("connect: real wait for child");
782 assert(got == connecting_child);
785 if (!WIFEXITED(status)) { report_child_status("connect",status); goto x; }
786 int es= WEXITSTATUS(status);
788 case CONNCHILD_ESTATUS_STREAM: conn->stream= 1; break;
789 case CONNCHILD_ESTATUS_NOSTREAM: conn->stream= 0; break;
791 fatal("connect: child gave unexpected exit status %d", es);
795 LIST_INIT(conn->waiting);
796 LIST_INIT(conn->priority);
797 LIST_INIT(conn->sent);
798 setnonblock(conn->fd, 1);
799 conn->max_queue= conn->stream ? max_queue_per_conn : 1;
800 notice("C%d connected %s", conn->fd, conn->stream ? "streaming" : "plain");
801 LIST_ADDHEAD(conns, conn);
803 connect_attempt_discard();
804 check_master_queue();
809 connect_attempt_discard();
812 static void conn_exception(oop_source *lp, int fd,
813 oop_event ev, void *conn_v) {
816 assert(fd == conn->fd);
817 assert(ev == OOP_EXCEPTION);
818 r= read(conn->fd, &ch, 1);
819 if (r<0) connfail(conn,"read failed: %s",strerror(errno));
820 connfail(conn,"exceptional condition on socket (peer sent urgent"
821 " data? read(,,1)=%d)",r);
824 static int allow_connect_start(void) {
825 return conns.count < max_connections
830 static void connect_start(void) {
831 assert(!connecting_sockets[0]);
832 assert(!connecting_sockets[1]);
833 assert(!connecting_child);
835 notice("starting connection attempt");
837 int r= socketpair(AF_UNIX, SOCK_STREAM, 0, connecting_sockets);
838 if (r) { syswarn("connect: cannot create socketpair for child"); goto x; }
840 connecting_child= xfork("connection");
842 if (!connecting_child) {
843 FILE *cn_from, *cn_to;
844 char buf[NNTP_STRLEN+100];
845 int exitstatus= CONNCHILD_ESTATUS_NOSTREAM;
847 r= close(connecting_sockets[0]);
848 if (r) sysdie("connect: close parent socket in child");
850 alarm(connection_setup_timeout);
851 if (NNTPconnect((char*)remote_host, port, &cn_from, &cn_to, buf) < 0) {
852 if (buf[0]) fatal("connect: rejected: %s", sanitise(buf));
853 else sysfatal("connect: connection attempt failed");
855 if (NNTPsendpassword((char*)remote_host, cn_from, cn_to) < 0)
856 sysfatal("connect: authentication failed");
858 if (fputs("MODE STREAM\r\n", cn_to) ||
860 sysfatal("connect: could not send MODE STREAM");
861 buf[sizeof(buf)-1]= 0;
862 if (!fgets(buf, sizeof(buf)-1, cn_from)) {
864 sysfatal("connect: could not read response to MODE STREAM");
866 fatal("connect: connection close in response to MODE STREAM");
871 fatal("connect: response to MODE STREAM is too long: %.100s...",
872 remote_host, sanitise(buf));
873 l--; if (l>0 && buf[l-1]=='\r') l--;
876 int rcode= strtoul(buf,&ep,10);
878 fatal("connect: bad response to MODE STREAM: %.50s", sanitise(buf));
882 exitstatus= CONNCHILD_ESTATUS_STREAM;
888 warn("connect: unexpected response to MODE STREAM: %.50s",
894 int fd= fileno(cn_from);
896 PREP_DECL_MSG_CMSG(msg);
897 struct cmsghdr *cmsg= CMSG_FIRSTHDR(&msg);
898 cmsg->cmsg_level= SOL_SOCKET;
899 cmsg->cmsg_type= SCM_RIGHTS;
900 cmsg->cmsg_len= CMSG_LEN(sizeof(fd));
901 memcpy(CMSG_DATA(cmsg), &fd, sizeof(fd));
903 msg.msg_controllen= cmsg->cmsg_len;
904 r= sendmsg(connecting_sockets[1], &msg, 0);
905 if (r) sysdie("sendmsg failed for new connection");
910 r= close(connecting_sockets[1]); connecting_sockets[1]= 0;
911 if (r) sysdie("connect: close child socket in parent");
913 on_fd_read_except(connecting_sockets[0], connchild_event);
917 connect_attempt_discard();
920 static void check_idle_conns(void) {
922 for (conn=LIST_HEAD(conns); conn; conn=LIST_NEXT(conn))
923 conn->since_activity++;
925 for (conn=LIST_HEAD(conns); conn; conn=LIST_NEXT(conn)) {
926 if (conn->since_activity <= need_activity_periods) continue;
928 /* We need to shut this down */
930 connfail(conn,"timed out waiting for response to QUIT");
931 else if (conn->sent.count)
932 connfail(conn,"timed out waiting for responses");
933 else if (conn->waiting.count || conn->priority.count)
934 connfail(conn,"BUG IN INNDUCT conn has queue but nothing sent");
935 else if (conn->xmitu)
936 connfail(conn,"peer has been sending responses"
937 " before receiving our commands!");
939 static const char quitcmd[]= "QUIT\r\n";
940 int todo= sizeof(quitcmd)-1;
941 const char *p= quitcmd;
943 int r= write(conn->fd, p, todo);
945 if (isewouldblock(errno))
946 connfail(conn, "blocked writing QUIT to idle connection");
948 connfail(conn, "failed to write QUIT to idle connection: %s",
956 conn->since_activity= 0;
957 debug("C%d is idle, quitting", conn->fd);
966 /*========== overall control of article flow ==========*/
968 static void check_master_queue(void) {
976 /* Find a connection to offer this article. We prefer a busy
977 * connection to an idle one, provided it's not full. We take the
978 * first (oldest) and since that's stable, it will mean we fill up
979 * connections in order. That way if we have too many
980 * connections, the spare ones will go away eventually.
982 for (walk=LIST_HEAD(conns); walk; walk=LIST_NEXT(walk)) {
983 if (walk->quitting) continue;
984 inqueue= walk->sent.count + walk->priority.count
985 + walk->waiting.count;
986 spare= walk->max_queue - inqueue;
987 assert(inqueue <= max_queue_per_conn);
989 if (inqueue==0) /*idle*/ { if (!use) use= walk; }
990 else if (spare>0) /*working*/ { use= walk; break; }
993 if (!inqueue) use->since_activity= 0; /* reset idle counter */
995 Article *art= LIST_REMHEAD(queue);
996 LIST_ADDTAIL(use->waiting, art);
999 conn_maybe_write(use);
1000 } else if (allow_connect_start()) {
1001 until_connect= reconnect_delay_periods;
1010 static void *conn_writeable(oop_source *l, int fd, oop_event ev, void *u) {
1011 conn_maybe_write(u);
1012 return OOP_CONTINUE;
1015 static void conn_maybe_write(Conn *conn) {
1018 conn_make_some_xmits(conn);
1020 loop->cancel_fd(loop, conn->fd, OOP_WRITE);
1024 void *rp= conn_write_some_xmits(conn);
1025 if (rp==OOP_CONTINUE) {
1026 loop->on_fd(loop, conn->fd, OOP_WRITE, conn_writeable, conn);
1028 } else if (rp==OOP_HALT) {
1031 /* transmitted everything */
1038 static void vconnfail(Conn *conn, const char *fmt, va_list al) {
1039 int requeue[art_MaxState];
1042 while ((art= LIST_REMHEAD(conn->priority))) LIST_ADDTAIL(queue, art);
1043 while ((art= LIST_REMHEAD(conn->waiting))) LIST_ADDTAIL(queue, art);
1044 while ((art= LIST_REMHEAD(conn->sent))) {
1045 requeue[art->state]++;
1046 if (art->state==art_Unsolicited) art->state= art_Unchecked;
1047 LIST_ADDTAIL(queue,art);
1052 for (i=0, d=conn->xmitd; i<conn->xmitu; i++, d++)
1055 char *m= xvasprintf(fmt,al);
1056 warn("C%d connection failed (requeueing " RCI_TRIPLE_FMT_BASE "): %s",
1057 conn->fd, RCI_TRIPLE_VALS_BASE(requeue, /*nothing*/), m);
1060 LIST_REMOVE(conns,conn);
1062 check_master_queue();
1065 static void connfail(Conn *conn, const char *fmt, ...) {
1068 vconnfail(conn,fmt,al);
1072 /*========== article transmission ==========*/
1074 static XmitDetails *xmit_core(Conn *conn, const char *data, int len,
1075 XmitKind kind) { /* caller must then fill in details */
1076 struct iovec *v= &conn->xmit[conn->xmitu];
1077 XmitDetails *d= &conn->xmitd[conn->xmitu++];
1078 v->iov_base= (char*)data;
1084 static void xmit_noalloc(Conn *conn, const char *data, int len) {
1085 xmit_core(conn,data,len, xk_Const);
1087 #define XMIT_LITERAL(lit) (xmit_noalloc(conn, (lit), sizeof(lit)-1))
1089 static void xmit_artbody(Conn *conn, ARTHANDLE *ah /* consumed */) {
1090 XmitDetails *d= xmit_core(conn, ah->data, ah->len, xk_Artdata);
1094 static void xmit_free(XmitDetails *d) {
1096 case xk_Malloc: free(d->info.malloc_tofree); break;
1097 case xk_Artdata: SMfreearticle(d->info.sm_art); break;
1098 case xk_Const: break;
1103 static void *conn_write_some_xmits(Conn *conn) {
1105 * 0: nothing more to write, no need to call us again
1106 * OOP_CONTINUE: more to write but fd not writeable
1107 * OOP_HALT: disaster, have destroyed conn
1110 int count= conn->xmitu;
1111 if (!count) return 0;
1113 if (count > IOV_MAX) count= IOV_MAX;
1114 ssize_t rs= writev(conn->fd, conn->xmit, count);
1116 if (isewouldblock(errno)) return OOP_CONTINUE;
1117 connfail(conn, "write failed: %s", strerror(errno));
1123 for (done=0; rs && done<conn->xmitu; done++) {
1124 struct iovec *vp= &conn->xmit[done];
1125 XmitDetails *dp= &conn->xmitd[done];
1126 if (rs > vp->iov_len) {
1134 int newu= conn->xmitu - done;
1135 memmove(conn->xmit, conn->xmit + done, newu * sizeof(*conn->xmit));
1136 memmove(conn->xmitd, conn->xmitd + done, newu * sizeof(*conn->xmitd));
1141 static void conn_make_some_xmits(Conn *conn) {
1143 if (conn->xmitu+5 > CONNIOVS)
1146 Article *art= LIST_REMHEAD(conn->priority);
1147 if (!art) art= LIST_REMHEAD(conn->waiting);
1150 if (art->state >= art_Wanted || (conn->stream && nocheck)) {
1151 /* actually send it */
1153 ARTHANDLE *artdata= SMretrieve(art->token, RETR_ALL);
1157 XMIT_LITERAL("TAKETHIS ");
1158 xmit_noalloc(conn, art->messageid, art->midlen);
1159 XMIT_LITERAL("\r\n");
1160 xmit_artbody(conn, artdata);
1163 /* we got 235 from IHAVE */
1165 xmit_artbody(conn, artdata);
1167 XMIT_LITERAL(".\r\n");
1172 art->state == art_Unchecked ? art_Unsolicited :
1173 art->state == art_Wanted ? art_Wanted :
1175 art->ipf->counts[art->state][RC_sent]++;
1176 LIST_ADDTAIL(conn->sent, art);
1182 XMIT_LITERAL("IHAVE ");
1184 XMIT_LITERAL("CHECK ");
1185 xmit_noalloc(conn, art->messageid, art->midlen);
1186 XMIT_LITERAL("\r\n");
1188 assert(art->state == art_Unchecked);
1189 art->ipf->counts[art->state][RC_sent]++;
1190 LIST_ADDTAIL(conn->sent, art);
1196 /*========== handling responses from peer ==========*/
1198 static const oop_rd_style peer_rd_style= {
1199 OOP_RD_DELIM_STRIP, '\n',
1201 OOP_RD_SHORTREC_FORBID
1204 static void *peer_rd_err(oop_source *lp, oop_read *oread, oop_event ev,
1205 const char *errmsg, int errnoval,
1206 const char *data, size_t recsz, void *conn_v) {
1208 connfail(conn, "error receiving from peer: %s", errmsg);
1209 return OOP_CONTINUE;
1212 static Article *article_reply_check(Conn *conn, const char *response,
1213 int code_indicates_streaming,
1215 /* 1:yes, -1:no, 0:dontcare */,
1216 const char *sanitised_response) {
1217 Article *art= LIST_HEAD(conn->sent);
1221 "peer gave unexpected response when no commands outstanding: %s",
1222 sanitised_response);
1226 if (code_indicates_streaming) {
1227 assert(!memchr(response, 0, 4)); /* ensured by peer_rd_ok */
1228 if (!conn->stream) {
1229 connfail(conn, "peer gave streaming response code "
1230 " to IHAVE or subsequent body: %s", sanitised_response);
1233 const char *got_mid= response+4;
1234 int got_midlen= strcspn(got_mid, " \n\r");
1235 if (got_midlen<3 || got_mid[0]!='<' || got_mid[got_midlen-1]!='>') {
1236 connfail(conn, "peer gave streaming response with syntactically invalid"
1237 " messageid: %s", sanitised_response);
1240 if (got_midlen != art->midlen ||
1241 memcmp(got_mid, art->messageid, got_midlen)) {
1242 connfail(conn, "peer gave streaming response code to wrong article -"
1243 " probable synchronisation problem; we offered: %s;"
1245 art->messageid, sanitised_response);
1250 connfail(conn, "peer gave non-streaming response code to"
1251 " CHECK/TAKETHIS: %s", sanitised_response);
1256 if (must_have_sent>0 && art->state < art_Wanted) {
1257 connfail(conn, "peer says article accepted but"
1258 " we had not sent the body: %s", sanitised_response);
1261 if (must_have_sent<0 && art->state >= art_Wanted) {
1262 connfail(conn, "peer says please sent the article but we just did: %s",
1263 sanitised_response);
1267 Article *art_again= LIST_REMHEAD(conn->sent);
1268 assert(art_again == art);
1272 static void update_nocheck(int accepted) {
1273 accept_proportion *= nocheck_decay;
1274 accept_proportion += accepted * (1.0 - nocheck_decay);
1275 int new_nocheck= accept_proportion >= nocheck_thresh;
1276 if (new_nocheck && !nocheck_reported) {
1277 notice("entering nocheck mode for the first time");
1278 nocheck_reported= 1;
1279 } else if (new_nocheck != nocheck) {
1280 debug("nocheck mode %s", new_nocheck ? "start" : "stop");
1282 nocheck= new_nocheck;
1285 static void article_done(Conn *conn, Article *art, int whichcount) {
1286 art->ipf->counts[art->state][whichcount]++;
1287 if (whichcount == RC_accepted) update_nocheck(1);
1288 else if (whichcount == RC_unwanted) update_nocheck(0);
1290 InputFile *ipf= art->ipf;
1293 while (art->blanklen) {
1294 static const char spaces[]=
1299 int w= art->blanklen; if (w >= sizeof(spaces)) w= sizeof(spaces)-1;
1300 int r= pwrite(ipf->fd, spaces, w, art->offset);
1302 if (errno==EINTR) continue;
1303 sysdie("failed to blank entry for %s (length %d at offset %lu) in %s",
1304 art->messageid, art->blanklen, art->offset, ipf->path);
1306 assert(r>=0 && r<=w);
1312 assert(ipf->inprogress >= 0);
1315 if (!ipf->inprogress && ipf != main_input_file)
1316 queue_check_input_done();
1319 static void *peer_rd_ok(oop_source *lp, oop_read *oread, oop_event ev,
1320 const char *errmsg, int errnoval,
1321 const char *data, size_t recsz, void *conn_v) {
1324 if (ev == OOP_RD_EOF) {
1325 connfail(conn, "unexpected EOF from peer");
1326 return OOP_CONTINUE;
1328 assert(ev == OOP_RD_OK);
1330 char *sani= sanitise(data);
1333 unsigned long code= strtoul(data, &ep, 10);
1334 if (ep != data+3 || *ep != ' ' || data[0]=='0') {
1335 connfail(conn, "badly formatted response from peer: %s", sani);
1336 return OOP_CONTINUE;
1339 if (conn->quitting) {
1340 if (code!=205 && code!=503) {
1341 connfail(conn, "peer gave unexpected response to QUIT: %s", sani);
1343 notice("C%d idle connection closed", conn->fd);
1344 assert(!conn->waiting.count);
1345 assert(!conn->priority.count);
1346 assert(!conn->sent.count);
1347 assert(!conn->xmitu);
1348 LIST_REMOVE(conns,conn);
1351 return OOP_CONTINUE;
1354 conn->since_activity= 0;
1357 #define GET_ARTICLE(musthavesent) \
1358 art= article_reply_check(conn, data, musthavesent, code_streaming, sani); \
1359 if (art) ; else return OOP_CONTINUE /* reply_check has failed the conn */
1361 #define ARTICLE_DEALTWITH(streaming,musthavesent,how) \
1362 code_streaming= (streaming); \
1363 GET_ARTICLE(musthavesent); \
1364 article_done(conn, art, RC_##how); break;
1366 #define PEERBADMSG(m) connfail(conn, m ": %s", sani); return OOP_CONTINUE
1368 int code_streaming= 0;
1372 case 400: PEERBADMSG("peer stopped accepting articles");
1373 case 503: PEERBADMSG("peer timed us out");
1374 default: PEERBADMSG("peer sent unexpected message");
1376 case 435: ARTICLE_DEALTWITH(0,0,unwanted); /* IHAVE says they have it */
1377 case 438: ARTICLE_DEALTWITH(1,0,unwanted); /* CHECK/TAKETHIS: they have it */
1379 case 235: ARTICLE_DEALTWITH(0,1,accepted); /* IHAVE says thanks */
1380 case 239: ARTICLE_DEALTWITH(1,1,accepted); /* TAKETHIS says thanks */
1382 case 437: ARTICLE_DEALTWITH(0,0,rejected); /* IHAVE says rejected */
1383 case 439: ARTICLE_DEALTWITH(1,0,rejected); /* TAKETHIS says rejected */
1385 case 238: /* CHECK says send it */
1387 case 335: /* IHAVE says send it */
1389 assert(art->state == art_Unchecked);
1390 art->ipf->counts[art->state][RC_accepted]++;
1391 art->state= art_Wanted;
1392 LIST_ADDTAIL(conn->priority, art);
1395 case 431: /* CHECK or TAKETHIS says try later */
1397 case 436: /* IHAVE says try later */
1400 if (fprintf(defer, "%s %s\n", TokenToText(art->token), art->messageid) <0
1402 sysfatal("write to defer file %s",path_defer);
1403 article_done(conn, art, RC_deferred);
1408 conn_maybe_write(conn);
1409 check_master_queue();
1410 return OOP_CONTINUE;
1414 /*========== monitoring of input files ==========*/
1416 static void feedfile_eof(InputFile *ipf) {
1417 assert(ipf != main_input_file); /* promised by tailing_try_read */
1419 inputfile_tailing_stop(ipf);
1420 assert(ipf->fd > 0);
1421 fixme do not close fd do something else because art_done needs it to blank entries;
1422 if (close(ipf->fd)) sysdie("could not close input file %s", ipf->path);
1425 if (ipf == flushing_input_file) {
1426 assert(sms==sm_SEPARATED || sms==sm_DROPPING);
1427 if (main_input_file) inputfile_tailing_start(main_input_file);
1428 statemc_check_flushing_done();
1429 } else if (ipf == backlog_input_file) {
1430 statemc_check_backlog_done();
1432 abort(); /* supposed to wait rather than get EOF on main input file */
1436 static InputFile *open_input_file(const char *path) {
1437 int fd= open(path, O_RDONLY);
1439 if (errno==ENOENT) return 0;
1440 sysfatal("unable to open input file %s", path);
1444 InputFile *ipf= xmalloc(sizeof(*ipf) + strlen(path) + 1);
1445 memset(ipf,0,sizeof(*ipf));
1448 strcpy(ipf->path, path);
1453 static void close_input_file(InputFile *ipf) { /* does not free */
1454 assert(!ipf->readable_callback); /* must have had ->on_cancel */
1455 assert(!ipf->filemon); /* must have had inputfile_tailing_stop */
1456 assert(!ipf->rd); /* must have had inputfile_tailing_stop */
1457 assert(!ipf->inprogress); /* no dangling pointers pointing here */
1460 if (close(ipf->fd)) sysdie("could not close input file %s", ipf->path);
1466 /*---------- dealing with articles read in the input file ----------*/
1468 static void *feedfile_got_bad_data(InputFile *ipf, off_t offset,
1469 const char *data, const char *how) {
1470 warn("corrupted file: %s, offset %lu: %s: %s",
1471 ipf->path, (unsigned long)offset, how, sanitise(data));
1472 ipf->readcount_err++;
1473 if (ipf->readcount_err > max_bad_data_initial +
1474 (ipf->readcount_ok+ipf->readcount_blank) / max_bad_data_ratio)
1475 die("too much garbage in input file! (%d errs, %d ok, %d blank)",
1476 ipf->readcount_err, ipf->readcount_ok, ipf->readcount_blank);
1477 return OOP_CONTINUE;
1480 static void *feedfile_read_err(oop_source *lp, oop_read *rd,
1481 oop_rd_event ev, const char *errmsg,
1482 int errnoval, const char *data, size_t recsz,
1484 InputFile *ipf= ipf_v;
1485 assert(ev == OOP_RD_SYSTEM);
1487 sysdie("error reading input file: %s, offset %lu",
1488 ipf->path, (unsigned long)ipf->offset);
1491 static void *feedfile_got_article(oop_source *lp, oop_read *rd,
1492 oop_rd_event ev, const char *errmsg,
1493 int errnoval, const char *data, size_t recsz,
1495 InputFile *ipf= ipf_v;
1497 char tokentextbuf[sizeof(TOKEN)*2+3];
1499 if (!data) { feedfile_eof(ipf); return OOP_CONTINUE; }
1501 off_t old_offset= ipf->offset;
1502 ipf->offset += recsz + 1;
1504 #define X_BAD_DATA(m) return feedfile_got_bad_data(ipf,old_offset,data,m);
1506 if (ev==OOP_RD_PARTREC)
1507 feedfile_got_bad_data(ipf,old_offset,data,"missing final newline");
1508 /* but process it anyway */
1510 if (ipf->skippinglong) {
1511 if (ev==OOP_RD_OK) ipf->skippinglong= 0; /* fine now */
1514 if (ev==OOP_RD_LONG) {
1515 ipf->skippinglong= 1;
1516 X_BAD_DATA("overly long line");
1519 if (memchr(data,'\0',recsz)) X_BAD_DATA("nul byte");
1520 if (!recsz) X_BAD_DATA("empty line");
1523 if (strspn(data," ") != recsz) X_BAD_DATA("line partially blanked");
1524 ipf->readcount_blank++;
1525 return OOP_CONTINUE;
1528 char *space= strchr(data,' ');
1529 int tokenlen= space-data;
1530 int midlen= (int)recsz-tokenlen-1;
1531 if (midlen <= 2) X_BAD_DATA("no room for messageid");
1532 if (space[1]!='<' || space[midlen]!='>') X_BAD_DATA("invalid messageid");
1534 if (tokenlen != sizeof(TOKEN)*2+2) X_BAD_DATA("token wrong length");
1535 memcpy(tokentextbuf, data, tokenlen);
1536 tokentextbuf[tokenlen]= 0;
1537 if (!IsToken(tokentextbuf)) X_BAD_DATA("token wrong syntax");
1539 ipf->readcount_ok++;
1541 art= xmalloc(sizeof(*art) - 1 + midlen + 1);
1542 art->state= art_Unchecked;
1543 art->midlen= midlen;
1544 art->ipf= ipf; ipf->inprogress++;
1545 art->token= TextToToken(tokentextbuf);
1546 art->offset= ipf->offset;
1547 art->blanklen= recsz;
1548 strcpy(art->messageid, space+1);
1549 LIST_ADDTAIL(queue, art);
1551 if (sms==sm_NORMAL && ipf==main_input_file &&
1552 ipf->offset >= target_max_feedfile_size)
1553 statemc_start_flush("feed file size");
1555 check_master_queue();
1556 return OOP_CONTINUE;
1559 /*========== tailing input file ==========*/
1561 static void *tailing_rable_call_time(oop_source *loop, struct timeval tv,
1563 InputFile *ipf= user;
1564 return ipf->readable_callback(loop, &ipf->readable,
1565 ipf->readable_callback_user);
1568 static void tailing_on_cancel(struct oop_readable *rable) {
1569 InputFile *ipf= (void*)rable;
1571 if (ipf->filemon) filemon_stop(ipf);
1572 loop->cancel_time(loop, OOP_TIME_NOW, tailing_rable_call_time, ipf);
1573 ipf->readable_callback= 0;
1576 static void tailing_queue_readable(InputFile *ipf) {
1577 /* lifetime of ipf here is OK because destruction will cause
1578 * on_cancel which will cancel this callback */
1579 loop->on_time(loop, OOP_TIME_NOW, tailing_rable_call_time, ipf);
1582 static int tailing_on_readable(struct oop_readable *rable,
1583 oop_readable_call *cb, void *user) {
1584 InputFile *ipf= (void*)rable;
1586 tailing_on_cancel(rable);
1587 ipf->readable_callback= cb;
1588 ipf->readable_callback_user= user;
1591 tailing_queue_readable(ipf);
1595 static ssize_t tailing_try_read(struct oop_readable *rable, void *buffer,
1597 InputFile *ipf= (void*)rable;
1599 ssize_t r= read(ipf->fd, buffer, length);
1601 if (errno==EINTR) continue;
1605 if (ipf==main_input_file) {
1608 } else if (ipf==flushing_input_file) {
1610 assert(sms==sm_SEPARATED || sms==sm_DROPPING);
1611 } else if (ipf==backlog_input_file) {
1621 /*---------- filemon implemented with inotify ----------*/
1623 #if defined(HAVE_INOTIFY) && !defined(HAVE_FILEMON)
1624 #define HAVE_FILEMON
1626 #include <linux/inotify.h>
1628 static int filemon_inotify_fd;
1629 static int filemon_inotify_wdmax;
1630 static InputFile **filemon_inotify_wd2ipf;
1632 struct Filemon_Perfile {
1636 static void filemon_method_startfile(InputFile *ipf, Filemon_Perfile *pf) {
1637 int wd= inotify_add_watch(filemon_inotify_fd, ipf->path, IN_MODIFY);
1638 if (wd < 0) sysdie("inotify_add_watch %s", ipf->path);
1640 if (wd >= filemon_inotify_wdmax) {
1642 filemon_inotify_wd= xrealloc(filemon_inotify_wd2ipf,
1643 sizeof(*filemon_inotify_wd2ipf) * newmax);
1644 memset(filemon_inotify_wd2ipf + filemon_inotify_wdmax, 0,
1645 sizeof(*filemon_inotify_wd2ipf) * (newmax - filemon_inotify_wdmax));
1646 filemon_inotify_wdmax= newmax;
1649 assert(!filemon_inotify_wd2ipf[wd]);
1650 filemon_inotify_wd2ipf[wd]= ipf;
1652 debug("filemon inotify startfile %p wd=%d wdmax=%d",
1653 ipf, wd, filemon_inotify_wdmax);
1658 static void filemon_method_stopfile(InputFile *ipf, Filemon_Perfile *pf) {
1660 debug("filemon inotify stopfile %p wd=%d", ipf, wd);
1661 int r= inotify_rm_watch(filemon_inotify_fd, filemon_inotify_wd);
1662 if (r) sysdie("inotify_rm_watch");
1663 filemon_inotify_wd2ipf[wd]= 0;
1666 static void *filemon_inotify_readable(oop_source *lp, int fd,
1667 oop_event e, void *u) {
1668 struct inotify_event iev;
1670 int r= read(filemon_inotify_fd, &iev, sizeof(iev));
1672 if (isewouldblock(errno)) break;
1673 sysdie("read from inotify master");
1674 } else if (r==sizeof(iev)) {
1675 assert(iev.wd >= 0 && iev.wd < filemon_inotify_wdmax);
1677 die("inotify read %d bytes wanted struct of %d", r, (int)sizeof(iev));
1679 InputFile *ipf= filemon_inotify_wd2ipf[iev.wd];
1680 debug("filemon inotify readable read %p wd=%p", iev.wd, ipf);
1681 filemon_callback(ipf);
1683 return OOP_CONTINUE;
1686 static int filemon_method_init(void) {
1687 filemon_inotify_fd= inotify_init();
1688 if (filemon_inotify_fd<0) {
1689 syswarn("could not initialise inotify: inotify_init failed");
1693 loop->on_fd(loop, filemon_inotify_fd, OOP_READ, filemon_inotify_readable);
1695 debug("filemon inotify init filemon_inotify_fd=%d", filemon_inotify_fd);
1699 #endif /* HAVE_INOTIFY && !HAVE_FILEMON */
1701 /*---------- filemon dummy implementation ----------*/
1703 #if !defined(HAVE_FILEMON)
1705 struct Filemon_Perfile { int dummy; };
1707 static int filemon_method_init(void) { return 0; }
1708 static void filemon_method_startfile(InputFile *ipf, Filemon_Perfile *pf) { }
1709 static void filemon_method_stopfile(InputFile *ipf, Filemon_Perfile *pf) { }
1711 #endif /* !HAVE_FILEMON */
1713 /*---------- filemon generic interface ----------*/
1715 static void filemon_start(InputFile *ipf) {
1716 assert(!ipf->filemon);
1718 ipf->filemon= xmalloc(sizeof(*ipf->filemon));
1719 memset(ipf->filemon, 0, sizeof(*ipf->filemon));
1720 filemon_method_startfile(ipf, ipf->filemon);
1723 static void filemon_stop(InputFile *ipf) {
1724 if (!ipf->filemon) return;
1725 filemon_method_stopfile(ipf, ipf->filemon);
1730 static void filemon_callback(InputFile *ipf) {
1731 ipf->readable_callback(loop, &ipf->readable, ipf->readable_callback_user);
1734 /*---------- interface to start and stop an input file ----------*/
1736 static const oop_rd_style feedfile_rdstyle= {
1737 OOP_RD_DELIM_STRIP, '\n',
1739 OOP_RD_SHORTREC_LONG,
1742 static void inputfile_tailing_start(InputFile *ipf) {
1744 ipf->readable.on_readable= tailing_on_readable;
1745 ipf->readable.on_cancel= tailing_on_cancel;
1746 ipf->readable.try_read= tailing_try_read;
1747 ipf->readable.delete_tidy= 0; /* we never call oop_rd_delete_{tidy,kill} */
1748 ipf->readable.delete_kill= 0;
1750 ipf->readable_callback= 0;
1751 ipf->readable_callback_user= 0;
1753 ipf->rd= oop_rd_new(loop, &ipf->readable, 0,0);
1756 int r= oop_rd_read(ipf->rd, &feedfile_rdstyle, MAX_LINE_FEEDFILE,
1757 feedfile_got_article,ipf, feedfile_read_err, ipf);
1758 if (r) sysdie("unable start reading feedfile %s",ipf->path);
1761 static void inputfile_tailing_stop(InputFile *ipf) {
1763 oop_rd_cancel(ipf->rd);
1764 oop_rd_delete(ipf->rd);
1766 assert(!ipf->filemon); /* we shouldn't be monitoring it now */
1770 /*========== interaction with innd - state machine ==========*/
1772 /* See official state diagram at top of file. We implement
1783 |`---------------------------------------------------.
1785 |`---------------- - - - |
1786 D ENOENT | D EXISTS see OVERALL STATES diagram |
1787 | for full startup logic |
1790 | ============ try to |
1796 | | F IS SO BIG WE SHOULD FLUSH, OR TIMEOUT |
1797 ^ | hardlink F to D |
1800 | | our handle onto F is now onto D |
1803 | |<-------------------<---------------------<---------+
1805 | | spawn inndcomm flush |
1807 | ================== |
1808 | FLUSHING[-ABSENT] |
1810 | main D tail/none |
1811 | ================== |
1813 | | INNDCOMM FLUSH FAILS ^
1814 | |`----------------------->----------. |
1816 | | NO SUCH SITE V |
1817 ^ |`--------------->----. ==================== |
1818 | | \ FLUSHFAILED[-ABSENT] |
1820 | | FLUSH OK \ main D tail/none |
1821 | | open F \ ==================== |
1823 | | \ | TIME TO RETRY |
1824 | |`------->----. ,---<---'\ `----------------'
1825 | | D NONE | | D NONE `----.
1827 | ============= V V ============
1828 | SEPARATED-1 | | DROPPING-1
1829 | flsh->fd>0 | | flsh->fd>0
1830 | [Separated] | | [Dropping]
1831 | main F idle | | main none
1832 | old D tail | | old D tail
1833 | ============= | | ============
1835 ^ | EOF ON D | | defer | EOF ON D
1837 | =============== | | ===============
1838 | SEPARATED-2 | | DROPPING-2
1839 | flsh->fd==0 | V flsh->fd==0
1840 | [Finishing] | | [Dropping]
1841 | main F tail | `. main none
1842 | old D closed | `. old D closed
1843 | =============== V `. ===============
1845 | | ALL D PROCESSED `. | ALL D PROCESSED
1846 | V install defer as backlog `. | install defer
1847 ^ | close D `. | close D
1848 | | unlink D `. | unlink D
1851 `----------' ==============
1871 static void startup_set_input_file(InputFile *f) {
1872 assert(!main_input_file);
1874 inputfile_tailing_start(f);
1877 static void statemc_init(void) {
1878 struct stat stab, stabf;
1880 path_lock= xasprintf("%s_lock", feedfile);
1881 path_flushing= xasprintf("%s_flushing", feedfile);
1882 path_defer= xasprintf("%s_defer", feedfile);
1883 globpat_backlog= xasprintf("%s_backlog*", feedfile);
1886 int lockfd= open(path_lock, O_CREAT|O_RDWR, 0600);
1887 if (lockfd<0) sysfatal("open lockfile %s", path_lock);
1890 memset(&fl,0,sizeof(fl));
1892 fl.l_whence= SEEK_SET;
1893 int r= fcntl(lockfd, F_SETLK, &fl);
1895 if (errno==EACCES || isewouldblock(errno)) {
1896 if (quiet_multiple) exit(0);
1897 fatal("another duct holds the lockfile");
1899 sysdie("fcntl F_SETLK lockfile %s", path_lock);
1902 xfstat_isreg(lockfd, &stabf, path_lock, "lockfile");
1904 xlstat_isreg(path_lock, &stab, &lock_noent, "lockfile");
1906 if (!lock_noent && samefile(&stab, &stabf))
1910 sysdie("could not close stale lockfile %s", path_lock);
1912 debug("startup: locked");
1914 search_backlog_file();
1917 xlstat_isreg(path_defer, &stab, &defer_noent, "defer file");
1919 debug("startup: ductdefer ENOENT");
1921 debug("startup: ductdefer nlink=%ld", (long)stab.st_nlink);
1922 switch (stab.st_nlink==1) {
1924 open_defer(); /* so that we will later close it and rename it */
1927 xunlink(path_defer, "stale defer file link"
1928 " (presumably hardlink to backlog file)");
1931 die("defer file %s has unexpected link count %d",
1932 path_defer, stab.st_nlink);
1936 struct stat stab_f, stab_d;
1939 InputFile *file_d= open_input_file(path_flushing);
1940 if (file_d) xfstat_isreg(file_d->fd, &stab_d, path_flushing,"flushing file");
1942 xlstat_isreg(feedfile, &stab_f, &noent_f, "feedfile");
1944 if (!noent_f && file_d && samefile(&stab_f, &stab_d)) {
1945 debug("startup: F==D => Hardlinked");
1946 xunlink(feedfile, "feed file (during startup)"); /* => Moved */
1951 debug("startup: F ENOENT => Moved");
1952 if (file_d) startup_set_input_file(file_d);
1953 spawn_inndcomm_flush("feedfile missing at startup");
1954 /* => Flushing, sms:=FLUSHING */
1957 debug("startup: F!=D => Separated");
1958 startup_set_input_file(file_d);
1959 SMS(SEPARATED, 0, "found both old and current feed files");
1961 debug("startup: F exists, D ENOENT => Normal");
1962 InputFile *file_f= open_input_file(feedfile);
1963 if (!file_f) die("feed file vanished during startup");
1964 startup_set_input_file(file_f);
1965 SMS(NORMAL, flushfail_retry_periods, "normal startup");
1970 static void statemc_start_flush(const char *why) { /* Normal => Flushing */
1971 assert(sms == sm_NORMAL);
1973 debug("starting flush (%s) (%lu >?= %lu) (%d)",
1975 (unsigned long)(main_input_file ? main_input_file->offset : 0),
1976 (unsigned long)target_max_feedfile_size,
1979 int r= link(feedfile, path_flushing);
1980 if (r) sysdie("link feedfile %s to flushing file %s",
1981 feedfile, path_flushing);
1984 xunlink(feedfile, "old feedfile link");
1987 spawn_inndcomm_flush(why); /* => Flushing FLUSHING */
1990 static void statemc_period_poll(void) {
1991 if (!sm_period_counter) return;
1992 sm_period_counter--;
1993 assert(sm_period_counter>=0);
1995 if (sm_period_counter) return;
1998 statemc_start_flush("periodic"); /* Normal => Flushing; => FLUSHING */
2000 case sm_FLUSHFAILED:
2001 spawn_inndcomm_flush("retry"); /* Moved => Flushing; => FLUSHING */
2008 static int inputfile_is_done(InputFile *ipf) {
2010 if (ipf->inprogress) return 0; /* new article in the meantime */
2011 if (ipf->fd) return 0; /* not had EOF */
2015 static void notice_processed(InputFile *ipf, const char *what,
2017 #define RCI_NOTHING(x) /* nothing */
2018 #define RCI_TRIPLE_FMT(x) " " #x "=" RCI_TRIPLE_FMT_BASE
2019 #define RCI_TRIPLE_VALS(x) , RCI_TRIPLE_VALS_BASE(ipf->counts, [RC_##x])
2021 #define CNT(art,rc) (ipf->counts[art_##art][RC_##rc])
2023 info("processed %s%s read=%d(+%dbl,+%derr)"
2024 " offered=%d(ch%d,nc%d) accepted=%d(ch%d+nc%d)"
2025 RESULT_COUNTS(RCI_NOTHING, RCI_TRIPLE_FMT)
2028 ipf->readcount_ok, ipf->readcount_blank, ipf->readcount_err,
2029 CNT(Unchecked,sent) + CNT(Unsolicited,sent)
2030 , CNT(Unchecked,sent), CNT(Unsolicited,sent),
2031 CNT(Wanted,accepted) + CNT(Unsolicited,accepted)
2032 , CNT(Wanted,accepted), CNT(Unsolicited,accepted)
2033 RESULT_COUNTS(RCI_NOTHING, RCI_TRIPLE_VALS)
2039 static void statemc_check_backlog_done(void) {
2040 InputFile *ipf= backlog_input_file;
2041 if (!inputfile_is_done(ipf)) return;
2043 const char *slash= strrchr(ipf->path, '/');
2044 const char *leaf= slash ? slash+1 : ipf->path;
2045 const char *under= strchr(slash, '_');
2046 const char *rest= under ? under+1 : leaf;
2047 if (!strncmp(rest,"backlog",7)) rest += 7;
2048 notice_processed(ipf,"backlog:",rest);
2050 close_input_file(ipf);
2051 if (unlink(ipf->path)) {
2052 if (errno != ENOENT)
2053 sysdie("could not unlink processed backlog file %s", ipf->path);
2054 warn("backlog file %s vanished while we were reading it"
2055 " so we couldn't remove it (but it's done now, anyway)",
2059 backlog_input_file= 0;
2060 search_backlog_file();
2064 static void statemc_check_flushing_done(void) {
2065 InputFile *ipf= flushing_input_file;
2066 if (!inputfile_is_done(ipf)) return;
2068 assert(sms==sm_SEPARATED || sms==sm_DROPPING);
2070 notice_processed(ipf,"feedfile",0);
2074 xunlink(path_flushing, "old flushing file");
2076 close_input_file(flushing_input_file);
2077 free(flushing_input_file);
2078 flushing_input_file= 0;
2080 if (sms==sm_SEPARATED) {
2081 notice("flush complete");
2082 SMS(NORMAL, 0, "flush complete");
2083 } else if (sms==sm_DROPPING) {
2084 SMS(DROPPED, 0, "old flush complete");
2085 search_backlog_file();
2086 notice("feed dropped, but will continue until backlog is finished");
2090 static void *statemc_check_input_done(oop_source *lp, struct timeval now,
2092 assert(!inputfile_is_done(main_input_file));
2093 statemc_check_flushing_done();
2094 statemc_check_backlog_done();
2095 return OOP_CONTINUE;
2098 static void queue_check_input_done(void) {
2099 loop->on_time(loop, OOP_TIME_NOW, statemc_check_input_done, 0);
2102 static void statemc_setstate(StateMachineState newsms, int periods,
2103 const char *forlog, const char *why) {
2105 sm_period_counter= periods;
2107 const char *xtra= "";
2109 case sm_FLUSHING: sm_FLUSHFAILED:
2110 if (!main_input_file) xtra= "-ABSENT";
2112 case sm_SEPARATED: case sm_DROPPING:
2113 xtra= flushing_input_file->fd ? "-1" : "-2";
2119 info("%s%s[%d] %s",forlog,xtra,periods,why);
2121 info("%s%s %s",forlog,xtra,why);
2125 /*---------- defer and backlog files ----------*/
2127 static void open_defer(void) {
2132 defer= fopen(path_defer, "a+");
2133 if (!defer) sysfatal("could not open defer file %s", path_defer);
2135 /* truncate away any half-written records */
2137 xfstat_isreg(fileno(defer), &stab, path_defer, "newly opened defer file");
2139 if (stab.st_size > LONG_MAX)
2140 die("defer file %s size is far too large", path_defer);
2145 long orgsize= stab.st_size;
2146 long truncto= stab.st_size;
2148 if (!truncto) break; /* was only (if anything) one half-truncated record */
2149 if (fseek(defer, truncto-1, SEEK_SET) < 0)
2150 sysdie("seek in defer file %s while truncating partial", path_defer);
2155 sysdie("failed read from defer file %s", path_defer);
2157 die("defer file %s shrank while we were checking it!", path_defer);
2163 if (stab.st_size != truncto) {
2164 warn("truncating half-record at end of defer file %s -"
2165 " shrinking by %ld bytes from %ld to %ld",
2166 path_defer, orgsize - truncto, orgsize, truncto);
2169 sysfatal("could not flush defer file %s", path_defer);
2170 if (ftruncate(fileno(defer), truncto))
2171 sysdie("could not truncate defer file %s", path_defer);
2174 info("continuing existing defer file %s (%ld bytes)",
2175 path_defer, orgsize);
2177 if (fseek(defer, truncto, SEEK_SET))
2178 sysdie("could not seek to new end of defer file %s", path_defer);
2181 static void close_defer(void) {
2186 xfstat_isreg(fileno(defer), &stab, path_defer, "defer file");
2188 if (fclose(defer)) sysfatal("could not close defer file %s", path_defer);
2191 time_t now= xtime();
2193 char *backlog= xasprintf("%s_backlog_%lu.%lu", feedfile,
2195 (unsigned long)stab.st_ino);
2196 if (link(path_defer, backlog))
2197 sysfatal("could not install defer file %s as backlog file %s",
2198 path_defer, backlog);
2199 if (unlink(path_defer))
2200 sysdie("could not unlink old defer link %s to backlog file %s",
2201 path_defer, backlog);
2205 if (until_backlog_nextscan < 0 ||
2206 until_backlog_nextscan > backlog_retry_minperiods + 1)
2207 until_backlog_nextscan= backlog_retry_minperiods + 1;
2210 static void poll_backlog_file(void) {
2211 if (until_backlog_nextscan < 0) return;
2212 if (until_backlog_nextscan-- > 0) return;
2213 search_backlog_file();
2216 static void search_backlog_file(void) {
2217 /* returns non-0 iff there are any backlog files */
2222 const char *oldest_path=0;
2223 time_t oldest_mtime, now;
2225 if (backlog_input_file) return;
2229 r= glob(globpat_backlog, GLOB_ERR|GLOB_MARK|GLOB_NOSORT, 0, &gl);
2233 sysdie("failed to expand backlog pattern %s", globpat_backlog);
2235 die("out of memory expanding backlog pattern %s", globpat_backlog);
2237 for (i=0; i<gl.gl_pathc; i++) {
2238 const char *path= gl.gl_pathv[i];
2240 if (strchr(path,'#') || strchr(path,'~')) {
2241 debug("backlog file search skipping %s", path);
2244 r= stat(path, &stab);
2246 syswarn("failed to stat backlog file %s", path);
2249 if (!S_ISREG(stab.st_mode)) {
2250 warn("backlog file %s is not a plain file (or link to one)", path);
2253 if (!oldest_path || stab.st_mtime < oldest_mtime) {
2255 oldest_mtime= stab.st_mtime;
2258 case GLOB_NOMATCH: /* fall through */
2261 sysdie("glob expansion of backlog pattern %s gave unexpected"
2262 " nonzero (error?) return value %d", globpat_backlog, r);
2268 debug("backlog scan: none");
2270 if (sms==sm_DROPPED) {
2271 notice("feed dropped and our work is complete");
2272 xunlink(path_lock, "lockfile for old feed");
2275 until_backlog_nextscan= backlog_spontaneous_rescan_periods;
2280 double age= difftime(now, oldest_mtime);
2281 long age_deficiency= (backlog_retry_minperiods * period_seconds) - age;
2283 if (age_deficiency <= 0) {
2284 debug("backlog scan: found age=%f deficiency=%ld oldest=%s",
2285 age, age_deficiency, oldest_path);
2287 backlog_input_file= open_input_file(oldest_path);
2288 if (!backlog_input_file) {
2289 warn("backlog file %s vanished as we opened it", backlog_input_file);
2292 inputfile_tailing_start(backlog_input_file);
2293 until_backlog_nextscan= -1;
2297 until_backlog_nextscan= age_deficiency / period_seconds;
2299 if (backlog_spontaneous_rescan_periods >= 0 &&
2300 until_backlog_nextscan > backlog_spontaneous_rescan_periods)
2301 until_backlog_nextscan= backlog_spontaneous_rescan_periods;
2303 debug("backlog scan: young age=%f deficiency=%ld nextscan=%d oldest=%s",
2304 age, age_deficiency, until_backlog_nextscan, oldest_path);
2308 /*========== flushing the feed ==========*/
2310 static pid_t inndcomm_child;
2312 static void *inndcomm_event(oop_source *lp, int fd, oop_event e, void *u) {
2313 assert(inndcomm_child);
2314 int status= xwaitpid(&inndcomm_child, "inndcomm");
2315 cancel_fd_read_except(fd);
2318 assert(!flushing_input_file);
2320 if (WIFEXITED(status)) {
2321 switch (WEXITSTATUS(status)) {
2323 case INNDCOMMCHILD_ESTATUS_FAIL:
2326 case INNDCOMMCHILD_ESTATUS_NONESUCH:
2327 warn("feed has been dropped by innd, finishing up");
2328 flushing_input_file= main_input_file;
2329 tailing_queue_readable(flushing_input_file);
2330 /* we probably previously returned EAGAIN from our fake read method
2331 * when in fact we were at EOF, so signal another readable event
2332 * so we actually see the EOF */
2336 if (flushing_input_file) {
2337 SMS(DROPPING, 0, "feed dropped by innd, but must finish last flush");
2340 SMS(DROPPED, 0, "feed dropped by innd");
2341 search_backlog_file();
2343 return OOP_CONTINUE;
2347 flushing_input_file= main_input_file;
2348 tailing_queue_readable(flushing_input_file);
2350 main_input_file= open_input_file(feedfile);
2351 if (!main_input_file)
2352 die("flush succeeded but feedfile %s does not exist!", feedfile);
2354 if (flushing_input_file) {
2355 SMS(SEPARATED, spontaneous_flush_periods, "recovery flush complete");
2358 SMS(NORMAL, spontaneous_flush_periods, "flush complete");
2360 return OOP_CONTINUE;
2363 goto unexpected_exitstatus;
2366 } else if (WIFSIGNALED(status) && WTERMSIG(status) == SIGALRM) {
2367 warn("flush timed out trying to talk to innd");
2370 unexpected_exitstatus:
2371 report_child_status("inndcomm child", status);
2375 SMS(FLUSHFAILED, flushfail_retry_periods, "flush failed, will retry");
2378 static void inndcommfail(const char *what) {
2379 syswarn("error communicating with innd: %s failed: %s", what, ICCfailure);
2380 exit(INNDCOMMCHILD_ESTATUS_FAIL);
2383 void spawn_inndcomm_flush(const char *why) { /* Moved => Flushing */
2386 notice("flushing %s",why);
2388 assert(sms==sm_NORMAL || sms==sm_FLUSHFAILED);
2389 assert(!inndcomm_child);
2391 if (pipe(pipefds)) sysdie("create pipe for inndcomm child sentinel");
2393 inndcomm_child= xfork("inndcomm child");
2395 if (!inndcomm_child) {
2396 const char *flushargv[2]= { sitename, 0 };
2402 alarm(inndcomm_flush_timeout);
2403 r= ICCopen(); if (r) inndcommfail("connect");
2404 r= ICCcommand('f',flushargv,&reply); if (r<0) inndcommfail("transmit");
2405 if (!r) exit(0); /* yay! */
2407 if (!strcmp(reply, "1 No such site")) exit(INNDCOMMCHILD_ESTATUS_NONESUCH);
2408 syswarn("innd ctlinnd flush failed: innd said %s", reply);
2409 exit(INNDCOMMCHILD_ESTATUS_FAIL);
2413 int sentinel_fd= pipefds[0];
2414 on_fd_read_except(sentinel_fd, inndcomm_event);
2416 SMS(FLUSHING, 0, why);
2419 /*========== main program ==========*/
2421 static void postfork_inputfile(InputFile *ipf) {
2424 perhaps_close(&ipf->fd);
2427 static void postfork_stdio(FILE *f) {
2428 /* we have no stdio streams that are buffered long-term */
2432 static void postfork(const char *what) {
2433 if (signal(SIGPIPE, SIG_DFL) == SIG_ERR)
2434 sysdie("%s child: failed to reset SIGPIPE");
2436 postfork_inputfile(main_input_file);
2437 postfork_inputfile(flushing_input_file);
2440 for (conn=LIST_HEAD(conns); conn; conn=LIST_NEXT(conn))
2443 postfork_stdio(defer);
2446 #define EVERY(what, interval_sec, interval_usec, body) \
2447 static struct timeval what##_timeout = { interval_sec, interval_usec }; \
2448 static void what##_schedule(void); \
2449 static void *what##_timedout(oop_source *lp, struct timeval tv, void *u) { \
2451 what##_schedule(); \
2453 static void what##_schedule(void) { \
2454 loop->on_time(loop, what##_timeout, what##_timedout, 0); \
2457 EVERY(filepoll, 5,0, {
2458 if (main_input_file && main_input_file->readable_callback)
2459 filemon_callback(main_input_file);
2462 #define DEBUGF_IPF(wh) " " #wh "=%p/%s:ip=%ld,off=%ld,fd=%d%s"
2463 #define DEBUG_IPF(wh) \
2464 wh##_input_file, debug_ipf_path(wh##_input_file), \
2465 wh##_input_file->inprogress, (long)wh##_input_file->offset, \
2466 wh##_input_file->fd, wh##_input_file->rd ? "+" : ""
2467 static const char *debug_ipf_path(InputFile *ipf) {
2468 char *slash= strrchr(ipf->path,'/');
2469 return slash ? slash+1 : ipf->path;
2472 EVERY(period, -1,0, {
2474 " sms=%s[%d] conns=%d queue=%d until_connect=%d"
2475 " input_files" DEBUGF_IPF(main) DEBUGF_IPF(old) DEBUGF_IPF(flushing)
2476 " children connecting=%ld inndcomm_child"
2478 sms_names[sms], sm_period_counter,
2479 queue.count, conns.count, until_connect,
2480 DEBUG_IPF(main), DEBUG_IPF(flushing), DEBUG_IPF(flushing),
2481 (long)connecting_child, (long)inndcomm_child
2484 if (until_connect) until_connect--;
2486 poll_backlog_file();
2487 if (!backlog_input_file) close_defer(); /* want to start on a new backlog */
2488 statemc_period_poll();
2489 check_master_queue();
2494 /*========== option parsing ==========*/
2496 /*---------- generic option parser and logging ----------*/
2498 static void vbadusage(const char *fmt, va_list al) NORET_PRINTF(1,0);
2499 static void vbadusage(const char *fmt, va_list al) {
2502 static void badusage(const char *fmt, ...) NORET_PRINTF(1,2);
2503 static void badusage(const char *fmt, ...) {
2510 of_seconds= 001000u,
2511 of_boolean= 002000u,
2514 typedef struct Option Option;
2515 typedef void OptionParser(const Option*, const char *val);
2525 /*---------- specific option types ----------*/
2527 static void op_integer(const Option *o, const char *val) {
2530 unsigned long ul= strtoul(val,&ep,10);
2531 if (*ep || ep==val || errno || ul>INT_MAX)
2532 badusage("bad integer value for %s",o->lng);
2533 int *store= o->store;
2537 static void op_double(const Option *o, const char *val) {
2538 int *store= o->store;
2541 *store= strtod(val, &ep);
2542 if (*ep || ep==val || errno)
2543 badusage("bad floating point value for %s",o->lng);
2546 static void op_string(const Option *o, const char *val) {
2547 const char **store= o->store;
2551 static void op_seconds(const Option *o, const char *val) {
2552 int *store= o->store;
2556 double v= strtod(val,&ep);
2557 if (ep==val) badusage("bad time/duration value for %s",o->lng);
2559 if (!*ep || !strcmp(ep,"s")) unit= 1;
2560 else if (!strcmp(ep,"m")) unit= 60;
2561 else if (!strcmp(ep,"h")) unit= 3600;
2562 else if (!strcmp(ep,"d")) unit= 86400;
2563 else badusage("bad units %s for time/duration value for %s",ep,o->lng);
2567 if (v > INT_MAX) badusage("time/duration value for %s out of range",o->lng);
2571 static void op_periods_rndup(const Option *o, const char *val) {
2572 int *store= o->store;
2574 *store += period_seconds-1;
2575 *store /= period_seconds;
2578 static void op_setint(const Option *o, const char *val) {
2579 int *store= o->store;
2583 /*---------- specific options ----------*/
2585 static const Option options[]= {
2586 {'f',"feedfile", &feedfile, op_string },
2587 {'q',"quiet-multiple", &quiet_multiple, op_setint, 1,1 },
2589 { 0, "max-connections", &max_connections, op_integer },
2590 { 0, "max-queue-per-conn", &max_queue_per_conn, op_integer },
2593 { 0, "streaming", &try_stream, op_setint, 1,1 },
2594 { 0, "no-streaming", &try_stream, op_setint, 1,0 },
2595 {'P',"port", &port, op_integer },
2596 { 0, "inndconf", &inndconffile, op_string },
2597 {'d',"daemon", &become_daemon, op_setint, 1,1 },
2598 { 0, "no-daemon", &become_daemon, op_setint, 1,0 },
2600 { 0, "no-check-proportion", &nocheck_thresh_pct, op_double },
2601 { 0, "no-check-filter", &nocheck_decay_articles, op_double },
2603 { 0, "reconnect-interval", &reconnect_delay_periods, op_periods_rndup },
2604 { 0, "flush-retry-interval", &flushfail_retry_periods, op_periods_rndup },
2605 { 0, "inndcomm-timeout", &inndcomm_flush_timeout, op_seconds },
2608 int main(int argc, char **argv) {
2614 if (*arg != '-') break;
2615 if (!strcmp(arg,"--")) { arg= *++argv; break; }
2617 while ((a= *++arg)) {
2621 char *equals= strchr(arg,'=');
2622 int len= equals ? (equals - arg) : strlen(arg);
2623 for (o=options; o->lng; o++)
2624 if (strlen(o->lng) == len && !memcmp(o->lng,arg,len))
2626 badusage("unknown long option --%s",arg);
2629 if (equals) badusage("option --%s does not take a value",o->lng);
2631 } else if (equals) {
2635 if (!arg) badusage("option --%s needs a value",o->lng);
2638 break; /* eaten the whole argument now */
2640 for (o=options; o->lng; o++)
2643 badusage("unknown short option -%c",a);
2650 if (!arg) badusage("option -%c needs a value",o->shrt);
2653 break; /* eaten the whole argument now */
2658 if (!arg) badusage("need site name argument");
2664 if (*++argv) badusage("too many non-option arguments");
2666 if (nocheck_thresh_pct < 0 || nocheck_thresh_pct > 100)
2667 badusage("nocheck threshold percentage must be between 0..100");
2668 nocheck_thresh= nocheck_thresh_pct * 0.01;
2670 if (nocheck_decay_articles < 0.1)
2671 badusage("nocheck decay articles must be at least 0.1");
2672 nocheck_decay= 1 - 1/nocheck_decay_articles;
2675 pathoutgoing= innconf->pathoutgoing;
2676 innconf_read(inndconffile);
2679 feedfile= xasprintf("%s/%s",pathoutgoing,sitename);
2680 else if (!feedfile[0])
2681 badusage("feed filename must be nonempty");
2682 else if (feedfile[strlen(feedfile)-1]=='/')
2683 feedfile= xasprintf("%s%s",feedfile,sitename);
2685 const char *feedfile_forbidden= "?*[~#";
2687 while ((c= *feedfile_forbidden++))
2688 if (strchr(feedfile, c))
2689 badusage("feed filename may not contain metacharacter %c",c);
2691 oop_source_sys *sysloop= oop_sys_new();
2692 if (!sysloop) sysdie("could not create liboop event loop");
2693 loop= (oop_source*)sysloop;
2695 if (signal(SIGPIPE, SIG_IGN) == SIG_ERR)
2696 sysdie("could not ignore SIGPIPE");
2698 if (become_daemon) {
2700 for (i=3; i<255; i++)
2701 /* do this now before we open syslog, etc. */
2703 openlog("innduct",LOG_NDELAY|LOG_PID,LOG_NEWS);
2705 int null= open("/dev/null",O_RDWR);
2706 if (null<0) sysdie("failed to open /dev/null");
2712 pid_t child1= xfork("daemonise first fork");
2713 if (child1) _exit(0);
2715 pid_t sid= setsid();
2716 if (sid != child1) sysdie("setsid failed");
2718 pid_t child2= xfork("daemonise second fork");
2719 if (child2) _exit(0);
2727 if (!filemon_method_init()) {
2728 warn("no file monitoring available, polling");
2729 filepoll_schedule();
2732 period_timeout.tv_sec= period_seconds;
2737 void *r= oop_sys_run(sysloop);
2738 assert(r == OOP_ERROR);
2739 sysdie("event loop failed");