4 * - actually implement badusage
5 * - options for all options
7 * - pid, sitename, hostname in lockfile
12 * Newsfeeds file entries should look like this:
13 * host.name.of.site[/exclude,exclude,...]\
14 * :pattern,pattern...[/distribution,distribution...]\
18 * sitename[/exclude,exclude,...]\
19 * :pattern,pattern...[/distribution,distribution...]\
25 * or might be blanked out
26 * <spc><spc><spc><spc>....
28 * F site.name main feed file
29 * opened/created, then written, by innd
32 * tokens blanked out by duct when processed
33 * site.name_lock lock preventing multiple ducts
34 * to hold lock must open,F_SETLK[W]
35 * and then stat to check that locked file
36 * still has name site.name_lock
37 * holder of this lock is "duct"
38 * (only) lockholder may remove the lockfile
39 * D site.name_flushing temporary feed file during flush (or crash)
40 * hardlink created by duct
42 * site.name_defer 431'd articles, still being written,
43 * created, written, used by duct
45 * site.name_backlog.<date>.<inum>
46 * 431'd articles, ready for innxmit or duct
47 * created (link/mv) by duct
48 * site.name_backlog<anything-else> (where <anything-else> does not
49 * contain '#' or '~') eg
50 * site.name_backlog.manual
51 * anything the sysadmin likes (eg, feed files
52 * from old feeds to be merged into this one)
53 * created (link/mv) by admin
54 * may be symlinks (in which case links
55 * may be written through, but only links
58 * It is safe to remove backlog files manually,
59 * if it's desired to throw away the backlog.
61 * Backlog files are also processed by innduct. We find the oldest
62 * backlog file which is at least a certain amount old, and feed it
63 * back into our processing. When every article in it has been read
64 * and processed, we unlink it and look for another backlog file.
66 * If we don't have a backlog file that we're reading, we close the
67 * defer file that we're writing and make it into a backlog file at
68 * the first convenient opportunity.
79 | | <----------------<---------------------------------'|
85 | F: innd writing, duct reading |
88 | | duct decides time to flush |
89 | | duct makes hardlink |
91 | V <------------------------'|
93 | F == D: innd writing, duct reading both exist |
96 | | <-----------<-------------<--'|
100 | V <---------------------. |
103 | D: innd writing, duct reading; or ENOENT | |
105 | | duct requests flush of feed | |
106 | | (others can too, harmlessly) | |
110 | D: innd flushing, duct; or ENOENT | |
112 | | inndcomm flush fails | |
113 | |`-------------------------->------------------' |
115 | | inndcomm reports no such site |
116 | |`---------------------------------------------------- | -.
118 | | innd finishes writing D, creates F | |
119 | | inndcomm reports flush successful | |
122 | Separated <----------------' |
123 | F: innd writing F!=D /
124 | D: duct reading; or ENOENT both exist /
126 | | duct gets to the end of D /
127 | | duct opens F too /
130 | F: innd writing, duct reading |
131 | D: duct finishing V
133 | | duct finishes processing D F: ENOENT
134 | V duct unlinks D D: duct reading
136 `--<--' | duct finishes
146 "duct reading" means innduct is reading the file but also
147 overwriting processed tokens.
151 * rune for printing diagrams:
153 perl -ne 'print if m/-8\<-/..m/-\>8-/; print "\f" if m/-\^L-/' backends/innduct.c |a2ps -R -B -ops
158 /*============================== PROGRAM ==============================*/
160 #define _GNU_SOURCE 1
166 #include "inndcomm.h"
168 #include "inn/list.h"
169 #include "inn/innconf.h"
172 #include <sys/types.h>
173 #include <sys/wait.h>
174 #include <sys/stat.h>
175 #include <sys/socket.h>
191 #include <oop-read.h>
193 /*----- general definitions, probably best not changed -----*/
195 #define CONNCHILD_ESTATUS_STREAM 4
196 #define CONNCHILD_ESTATUS_NOSTREAM 5
198 #define INNDCOMMCHILD_ESTATUS_FAIL 6
199 #define INNDCOMMCHILD_ESTATUS_NONESUCH 7
201 #define MAX_LINE_FEEDFILE (NNTP_MSGID_MAXLEN + sizeof(TOKEN)*2 + 10)
203 #define VA va_list al; va_start(al,fmt)
204 #define PRINTF(f,a) __attribute__((__format__(printf,f,a)))
205 #define NORET_PRINTF(f,a) __attribute__((__noreturn__,__format__(printf,f,a)))
207 /*----- doubly linked lists -----*/
209 #define ISNODE(T) struct { T *succ, *pred; } node /* must be at start */
210 #define DEFLIST(T) typedef struct { T *hd, *tl, *tp; int count; } T##List
212 #define NODE(n) (assert((void*)&(n)->node == &(n)), \
213 (struct node*)&(n)->node)
215 #define LIST_CHECKCANHAVENODE(l,n) \
216 ((void)((n) == ((l).hd))) /* just for the type check */
218 #define LIST_ADDSOMEHOW(l,n,list_addsomehow) \
219 ( LIST_CHECKCANHAVENODE(l,n), \
220 list_addsomehow((struct list*)&(l), NODE((n))), \
224 #define LIST_REMSOMEHOW(l,list_remsomehow) \
228 list_remsomehow((struct list*)&(l)) ) \
234 #define LIST_ADDHEAD(l,n) LIST_ADDSOMEHOW((l),(n),list_addhead)
235 #define LIST_ADDTAIL(l,n) LIST_ADDSOMEHOW((l),(n),list_addtail)
236 #define LIST_REMHEAD(l) LIST_REMSOMEHOW((l),list_remhead)
237 #define LIST_REMTAIL(l) LIST_REMSOMEHOW((l),list_remtail)
239 #define LIST_INIT(l) ((l).hd, list_new((struct list*)&(l)))
240 #define LIST_HEAD(l) ((typeof((l).hd))(list_head((struct list*)&(l))))
241 #define LIST_NEXT(n) ((typeof(n))list_succ(NODE((n))))
242 #define LIST_BACK(n) ((typeof(n))list_pred(NODE((n))))
244 #define LIST_REMOVE(l,n) \
245 ( LIST_CHECKCANHAVENODE(l,n), \
246 list_remove(NODE((n))), \
250 #define LIST_INSERT(l,n,pred) \
251 ( LIST_CHECKCANHAVENODE(l,n), \
252 LIST_CHECKCANHAVENODE(l,pred), \
253 list_insert((struct list*)&(l), NODE((n)), NODE((pred))), \
257 /*----- type predeclarations -----*/
259 typedef struct Conn Conn;
260 typedef struct Article Article;
261 typedef struct InputFile InputFile;
262 typedef struct XmitDetails XmitDetails;
263 typedef struct Filemon_Perfile Filemon_Perfile;
264 typedef enum StateMachineState StateMachineState;
269 /*----- function predeclarations -----*/
271 static void conn_maybe_write(Conn *conn);
272 static void conn_make_some_xmits(Conn *conn);
273 static void *conn_write_some_xmits(Conn *conn);
275 static void xmit_free(XmitDetails *d);
277 #define SMS(newstate, periods, why) \
278 (statemc_setstate(sm_##newstate,(periods),#newstate,(why)))
279 static void statemc_setstate(StateMachineState newsms, int periods,
280 const char *forlog, const char *why);
282 static void statemc_start_flush(const char *why); /* Normal => Flushing */
283 static void spawn_inndcomm_flush(const char *why); /* Moved => Flushing */
285 static void check_master_queue(void);
286 static void queue_check_input_done(void);
288 static void statemc_check_flushing_done(void);
289 static void statemc_check_backlog_done(void);
291 static void postfork(const char *what);
292 static void postfork_inputfile(InputFile *ipf);
294 static void open_defer(void);
295 static void close_defer(void);
296 static void search_backlog_file(void);
298 static void inputfile_tailing_start(InputFile *ipf);
299 static void inputfile_tailing_stop(InputFile *ipf);
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 /*----- general operational variables -----*/
454 /* main initialises */
455 static oop_source *loop;
456 static ConnList conns;
457 static ArticleList queue;
458 static char *path_lock, *path_flushing, *path_defer, *globpat_backlog;
460 /* statemc_init initialises */
461 static StateMachineState sms;
463 static InputFile *main_input_file, *flushing_input_file, *backlog_input_file;
464 static int sm_period_counter;
466 /* initialisation to 0 is good */
467 static int until_connect, until_backlog_nextscan;
468 static double accept_proportion;
469 static int nocheck, nocheck_reported;
471 /*========== logging ==========*/
473 static void logcore(int sysloglevel, const char *fmt, ...) PRINTF(2,3);
474 static void logcore(int sysloglevel, const char *fmt, ...) {
477 vsyslog(sysloglevel,fmt,al);
479 vfprintf(stderr,fmt,al);
485 static void logv(int sysloglevel, const char *pfx, int errnoval,
486 const char *fmt, va_list al) PRINTF(5,0);
487 static void logv(int sysloglevel, const char *pfx, int errnoval,
488 const char *fmt, va_list al) {
489 char msgbuf[256]; /* NB do not call xvasprintf here or you'll recurse */
490 vsnprintf(msgbuf,sizeof(msgbuf), fmt,al);
491 msgbuf[sizeof(msgbuf)-1]= 0;
493 if (sysloglevel >= LOG_ERR && (errnoval==EACCES || errnoval==EPERM))
494 sysloglevel= LOG_ERR; /* run by wrong user, probably */
496 logcore(sysloglevel, "<%s>%s: %s%s%s",
497 sitename, pfx, msgbuf,
498 errnoval>=0 ? ": " : "",
499 errnoval>=0 ? strerror(errnoval) : "");
502 #define diewrap(fn, pfx, sysloglevel, err, estatus) \
503 static void fn(const char *fmt, ...) NORET_PRINTF(1,2); \
504 static void fn(const char *fmt, ...) { \
506 logv(sysloglevel, pfx, err, fmt, al); \
510 #define logwrap(fn, pfx, sysloglevel, err) \
511 static void fn(const char *fmt, ...) PRINTF(1,2); \
512 static void fn(const char *fmt, ...) { \
514 logv(sysloglevel, pfx, err, fmt, al); \
518 diewrap(sysdie, " critical", LOG_CRIT, errno, 16);
519 diewrap(die, " critical", LOG_CRIT, -1, 16);
521 diewrap(sysfatal, " fatal", LOG_ERR, errno, 12);
522 diewrap(fatal, " fatal", LOG_ERR, -1, 12);
524 logwrap(syswarn, " warning", LOG_WARNING, errno);
525 logwrap(warn, " warning", LOG_WARNING, -1);
527 logwrap(notice, "", LOG_NOTICE, -1);
528 logwrap(info, " info", LOG_INFO, -1);
529 logwrap(debug, " debug", LOG_DEBUG, -1);
532 /*========== utility functions etc. ==========*/
534 static char *xvasprintf(const char *fmt, va_list al) PRINTF(1,0);
535 static char *xvasprintf(const char *fmt, va_list al) {
537 int rc= vasprintf(&str,fmt,al);
538 if (rc<0) sysdie("vasprintf(\"%s\",...) failed", fmt);
541 static char *xasprintf(const char *fmt, ...) PRINTF(1,2);
542 static char *xasprintf(const char *fmt, ...) {
544 char *str= xvasprintf(fmt,al);
549 static void perhaps_close(int *fd) { if (*fd) { close(*fd); fd=0; } }
551 static pid_t xfork(const char *what) {
555 if (child==-1) sysdie("cannot fork for %s",what);
556 if (!child) postfork(what);
557 debug("forked %s %ld", what, (unsigned long)child);
561 static void on_fd_read_except(int fd, oop_call_fd callback) {
562 loop->on_fd(loop, fd, OOP_READ, callback, 0);
563 loop->on_fd(loop, fd, OOP_EXCEPTION, callback, 0);
565 static void cancel_fd_read_except(int fd) {
566 loop->cancel_fd(loop, fd, OOP_READ);
567 loop->cancel_fd(loop, fd, OOP_EXCEPTION);
570 static void report_child_status(const char *what, int status) {
571 if (WIFEXITED(status)) {
572 int es= WEXITSTATUS(status);
574 warn("%s: child died with error exit status %d",es);
575 } else if (WIFSIGNALED(status)) {
576 int sig= WTERMSIG(status);
577 const char *sigstr= strsignal(sig);
578 const char *coredump= WCOREDUMP(status) ? " (core dumped)" : "";
580 warn("%s: child died due to fatal signal %s%s", what, sigstr, coredump);
582 warn("%s: child died due to unknown fatal signal %d%s",
583 what, sig, coredump);
585 warn("%s: child died with unknown wait status %d", status);
589 static int xwaitpid(pid_t *pid, const char *what) {
592 int r= kill(*pid, SIGKILL);
593 if (r) sysdie("cannot kill %s child", what);
595 pid_t got= waitpid(*pid, &status, WNOHANG);
596 if (got==-1) sysdie("cannot reap %s child", what);
603 static void xunlink(const char *path, const char *what) {
605 if (r) sysdie("can't unlink %s %s", path, what);
608 static time_t xtime(void) {
610 if (now==-1) sysdie("time(2) failed");
613 static void check_isreg(const struct stat *stab, const char *path,
615 if (!S_ISREG(stab->st_mode))
616 die("%s %s not a plain file (mode 0%lo)",
617 what, path, (unsigned long)stab->st_mode);
620 static void xfstat(int fd, struct stat *stab_r, const char *what) {
621 int r= fstat(fd, stab_r);
622 if (r) sysdie("could not fstat %s", what);
625 static void xfstat_isreg(int fd, struct stat *stab_r,
626 const char *path, const char *what) {
627 xfstat(fd, stab_r, what);
628 check_isreg(stab_r, path, what);
631 static void xlstat_isreg(const char *path, struct stat *stab,
632 int *enoent_r /* 0 means ENOENT is fatal */,
634 int r= lstat(path, stab);
636 if (errno==ENOENT && enoent_r) { *enoent_r=1; return; }
637 sysdie("could not lstat %s %s", what, path);
639 if (enoent_r) *enoent_r= 0;
640 check_isreg(stab, path, what);
643 static void setnonblock(int fd, int nonblocking) {
644 int r= fcntl(fd, F_GETFL); if (r<0) sysdie("setnonblocking fcntl F_GETFL");
645 if (nonblocking) r |= O_NONBLOCK;
646 else r &= ~O_NONBLOCK;
647 r= fcntl(fd, F_SETFL, r); if (r<0) sysdie("setnonblocking fcntl F_SETFL");
650 static int samefile(const struct stat *a, const struct stat *b) {
651 assert(S_ISREG(a->st_mode));
652 assert(S_ISREG(b->st_mode));
653 return (a->st_ino == b->st_ino &&
654 a->st_dev == b->st_dev);
657 static char *sanitise(const char *input) {
658 static char sanibuf[100]; /* returns pointer to this buffer! */
660 const char *p= input;
664 if (q > sanibuf+sizeof(sanibuf)-8) { strcpy(q,"'.."); break; }
666 if (!c) { *q++= '\''; *q=0; break; }
667 if (c>=' ' && c<=126 && c!='\\') { *q++= c; continue; }
668 sprintf(q,"\\x%02x",c);
674 static int isewouldblock(int errnoval) {
675 return errnoval==EWOULDBLOCK || errnoval==EAGAIN;
678 /*========== making new connections ==========*/
680 static void conn_dispose(Conn *conn) {
683 loop->cancel_fd(loop, conn->fd, OOP_WRITE);
684 loop->cancel_fd(loop, conn->fd, OOP_EXCEPTION);
686 perhaps_close(&conn->fd);
688 until_connect= reconnect_delay_periods;
691 static int connecting_sockets[2]= {-1,-1};
692 static pid_t connecting_child;
694 static void connect_attempt_discard(void) {
695 if (connecting_sockets[0])
696 cancel_fd_read_except(connecting_sockets[0]);
698 perhaps_close(&connecting_sockets[0]);
699 perhaps_close(&connecting_sockets[1]);
701 if (connecting_child) {
702 int r= kill(connecting_child, SIGTERM);
703 if (r) syswarn("failed to kill connecting child");
704 int status= xwaitpid(&connecting_child, "connect");
706 if (!(WIFEXITED(status) ||
707 (WIFSIGNALED(status) && WTERMSIG(status) == SIGKILL)))
708 report_child_status("connect", status);
712 #define PREP_DECL_MSG_CMSG(msg) \
714 memset(&msg,0,sizeof(msg)); \
715 char msg##cbuf[CMSG_SPACE(sizeof(fd))]; \
716 msg.msg_control= msg##cbuf; \
717 msg.msg_controllen= sizeof(msg##cbuf);
719 static void *connchild_event(oop_source *lp, int fd, oop_event e, void *u) {
722 conn= xmalloc(sizeof(*conn));
723 memset(conn,0,sizeof(*conn));
725 PREP_DECL_MSG_CMSG(msg);
726 struct cmsghdr *h= 0;
727 ssize_t rs= recvmsg(fd, &msg, MSG_DONTWAIT);
728 if (rs >= 0) h= CMSG_FIRSTHDR(&msg);
731 pid_t got= waitpid(connecting_child, &status, WNOHANG);
733 assert(got==connecting_child);
735 if (WIFEXITED(status)) {
736 if (WEXITSTATUS(status) != 0 &&
737 WEXITSTATUS(status) != CONNCHILD_ESTATUS_STREAM &&
738 WEXITSTATUS(status) != CONNCHILD_ESTATUS_NOSTREAM)
739 /* child already reported the problem */;
741 warn("connect: connection child exited code %d but no cmsg",
742 WEXITSTATUS(status));
743 } else if (WIFSIGNALED(status) && WTERMSIG(status) == SIGALRM) {
744 warn("connect: connection attempt timed out");
746 report_child_status("connect", status);
749 /* child is still running apparently, report the socket problem */
751 syswarn("connect: read from child socket failed");
752 else if (e == OOP_EXCEPTION)
753 warn("connect: unexpected exception on child socket");
755 warn("connect: unexpected EOF on child socket");
757 fatal("connect: unexpected lack of cmsg from child");
762 #define CHK(field, val) \
763 if (h->cmsg_##field != val) { \
764 die("connect: child sent cmsg with cmsg_" #field "=%d, expected %d"); \
767 CHK(level, SOL_SOCKET);
768 CHK(type, SCM_RIGHTS);
769 CHK(len, CMSG_LEN(sizeof(conn->fd)));
772 if (CMSG_NXTHDR(&msg,h)) die("connect: child sent many cmsgs");
774 memcpy(&conn->fd, CMSG_DATA(h), sizeof(conn->fd));
775 loop->on_fd(loop, conn->fd, OOP_EXCEPTION, conn_exception, conn);
778 pid_t got= waitpid(connecting_child, &status, 0);
779 if (got==-1) sysdie("connect: real wait for child");
780 assert(got == connecting_child);
783 if (!WIFEXITED(status)) { report_child_status("connect",status); goto x; }
784 int es= WEXITSTATUS(status);
786 case CONNCHILD_ESTATUS_STREAM: conn->stream= 1; break;
787 case CONNCHILD_ESTATUS_NOSTREAM: conn->stream= 0; break;
789 fatal("connect: child gave unexpected exit status %d", es);
793 LIST_INIT(conn->waiting);
794 LIST_INIT(conn->priority);
795 LIST_INIT(conn->sent);
796 setnonblock(conn->fd, 1);
797 conn->max_queue= conn->stream ? max_queue_per_conn : 1;
798 notice("C%d connected %s", conn->fd, conn->stream ? "streaming" : "plain");
799 LIST_ADDHEAD(conns, conn);
801 connect_attempt_discard();
802 check_master_queue();
807 connect_attempt_discard();
810 static void conn_exception(oop_source *lp, int fd,
811 oop_event ev, void *conn_v) {
814 assert(fd == conn->fd);
815 assert(ev == OOP_EXCEPTION);
816 r= read(conn->fd, &ch, 1);
817 if (r<0) connfail(conn,"read failed: %s",strerror(errno));
818 connfail(conn,"exceptional condition on socket (peer sent urgent"
819 " data? read(,,1)=%d)",r);
822 static int allow_connect_start(void) {
823 return conns.count < max_connections
828 static void connect_start(void) {
829 assert(!connecting_sockets[0]);
830 assert(!connecting_sockets[1]);
831 assert(!connecting_child);
833 notice("starting connection attempt");
835 int r= socketpair(AF_UNIX, SOCK_STREAM, 0, connecting_sockets);
836 if (r) { syswarn("connect: cannot create socketpair for child"); goto x; }
838 connecting_child= xfork("connection");
840 if (!connecting_child) {
841 FILE *cn_from, *cn_to;
842 char buf[NNTP_STRLEN+100];
843 int exitstatus= CONNCHILD_ESTATUS_NOSTREAM;
845 r= close(connecting_sockets[0]);
846 if (r) sysdie("connect: close parent socket in child");
848 alarm(connection_setup_timeout);
849 if (NNTPconnect((char*)remote_host, port, &cn_from, &cn_to, buf) < 0) {
850 if (buf[0]) fatal("connect: rejected: %s", sanitise(buf));
851 else sysfatal("connect: connection attempt failed");
853 if (NNTPsendpassword((char*)remote_host, cn_from, cn_to) < 0)
854 sysfatal("connect: authentication failed");
856 if (fputs("MODE STREAM\r\n", cn_to) ||
858 sysfatal("connect: could not send MODE STREAM");
859 buf[sizeof(buf)-1]= 0;
860 if (!fgets(buf, sizeof(buf)-1, cn_from)) {
862 sysfatal("connect: could not read response to MODE STREAM");
864 fatal("connect: connection close in response to MODE STREAM");
869 fatal("connect: response to MODE STREAM is too long: %.100s...",
870 remote_host, sanitise(buf));
871 l--; if (l>0 && buf[l-1]=='\r') l--;
874 int rcode= strtoul(buf,&ep,10);
876 fatal("connect: bad response to MODE STREAM: %.50s", sanitise(buf));
880 exitstatus= CONNCHILD_ESTATUS_STREAM;
886 warn("connect: unexpected response to MODE STREAM: %.50s",
892 int fd= fileno(cn_from);
894 PREP_DECL_MSG_CMSG(msg);
895 struct cmsghdr *cmsg= CMSG_FIRSTHDR(&msg);
896 cmsg->cmsg_level= SOL_SOCKET;
897 cmsg->cmsg_type= SCM_RIGHTS;
898 cmsg->cmsg_len= CMSG_LEN(sizeof(fd));
899 memcpy(CMSG_DATA(cmsg), &fd, sizeof(fd));
901 msg.msg_controllen= cmsg->cmsg_len;
902 r= sendmsg(connecting_sockets[1], &msg, 0);
903 if (r) sysdie("sendmsg failed for new connection");
908 r= close(connecting_sockets[1]); connecting_sockets[1]= 0;
909 if (r) sysdie("connect: close child socket in parent");
911 on_fd_read_except(connecting_sockets[0], connchild_event);
915 connect_attempt_discard();
918 static void check_idle_conns(void) {
920 for (conn=LIST_HEAD(conns); conn; conn=LIST_NEXT(conn))
921 conn->since_activity++;
923 for (conn=LIST_HEAD(conns); conn; conn=LIST_NEXT(conn)) {
924 if (conn->since_activity <= need_activity_periods) continue;
926 /* We need to shut this down */
928 connfail(conn,"timed out waiting for response to QUIT");
929 else if (conn->sent.count)
930 connfail(conn,"timed out waiting for responses");
931 else if (conn->waiting.count || conn->priority.count)
932 connfail(conn,"BUG IN INNDUCT conn has queue but nothing sent");
933 else if (conn->xmitu)
934 connfail(conn,"peer has been sending responses"
935 " before receiving our commands!");
937 static const char quitcmd[]= "QUIT\r\n";
938 int todo= sizeof(quitcmd)-1;
939 const char *p= quitcmd;
941 int r= write(conn->fd, p, todo);
943 if (isewouldblock(errno))
944 connfail(conn, "blocked writing QUIT to idle connection");
946 connfail(conn, "failed to write QUIT to idle connection: %s",
954 conn->since_activity= 0;
955 debug("C%d is idle, quitting", conn->fd);
964 /*========== overall control of article flow ==========*/
966 static void check_master_queue(void) {
974 /* Find a connection to offer this article. We prefer a busy
975 * connection to an idle one, provided it's not full. We take the
976 * first (oldest) and since that's stable, it will mean we fill up
977 * connections in order. That way if we have too many
978 * connections, the spare ones will go away eventually.
980 for (walk=LIST_HEAD(conns); walk; walk=LIST_NEXT(walk)) {
981 if (walk->quitting) continue;
982 inqueue= walk->sent.count + walk->priority.count
983 + walk->waiting.count;
984 spare= walk->max_queue - inqueue;
985 assert(inqueue <= max_queue_per_conn);
987 if (inqueue==0) /*idle*/ { if (!use) use= walk; }
988 else if (spare>0) /*working*/ { use= walk; break; }
991 if (!inqueue) use->since_activity= 0; /* reset idle counter */
993 Article *art= LIST_REMHEAD(queue);
994 LIST_ADDTAIL(use->waiting, art);
997 conn_maybe_write(use);
998 } else if (allow_connect_start()) {
999 until_connect= reconnect_delay_periods;
1008 static void *conn_writeable(oop_source *l, int fd, oop_event ev, void *u) {
1009 conn_maybe_write(u);
1010 return OOP_CONTINUE;
1013 static void conn_maybe_write(Conn *conn) {
1016 conn_make_some_xmits(conn);
1018 loop->cancel_fd(loop, conn->fd, OOP_WRITE);
1022 void *rp= conn_write_some_xmits(conn);
1023 if (rp==OOP_CONTINUE) {
1024 loop->on_fd(loop, conn->fd, OOP_WRITE, conn_writeable, conn);
1026 } else if (rp==OOP_HALT) {
1029 /* transmitted everything */
1036 static void vconnfail(Conn *conn, const char *fmt, va_list al) {
1037 int requeue[art_MaxState];
1040 while ((art= LIST_REMHEAD(conn->priority))) LIST_ADDTAIL(queue, art);
1041 while ((art= LIST_REMHEAD(conn->waiting))) LIST_ADDTAIL(queue, art);
1042 while ((art= LIST_REMHEAD(conn->sent))) {
1043 requeue[art->state]++;
1044 if (art->state==art_Unsolicited) art->state= art_Unchecked;
1045 LIST_ADDTAIL(queue,art);
1050 for (i=0, d=conn->xmitd; i<conn->xmitu; i++, d++)
1053 char *m= xvasprintf(fmt,al);
1054 warn("C%d connection failed (requeueing " RCI_TRIPLE_FMT_BASE "): %s",
1055 conn->fd, RCI_TRIPLE_VALS_BASE(requeue, /*nothing*/), m);
1058 LIST_REMOVE(conns,conn);
1060 check_master_queue();
1063 static void connfail(Conn *conn, const char *fmt, ...) {
1066 vconnfail(conn,fmt,al);
1070 /*========== article transmission ==========*/
1072 static XmitDetails *xmit_core(Conn *conn, const char *data, int len,
1073 XmitKind kind) { /* caller must then fill in details */
1074 struct iovec *v= &conn->xmit[conn->xmitu];
1075 XmitDetails *d= &conn->xmitd[conn->xmitu++];
1076 v->iov_base= (char*)data;
1082 static void xmit_noalloc(Conn *conn, const char *data, int len) {
1083 xmit_core(conn,data,len, xk_Const);
1085 #define XMIT_LITERAL(lit) (xmit_noalloc(conn, (lit), sizeof(lit)-1))
1087 static void xmit_artbody(Conn *conn, ARTHANDLE *ah /* consumed */) {
1088 XmitDetails *d= xmit_core(conn, ah->data, ah->len, xk_Artdata);
1092 static void xmit_free(XmitDetails *d) {
1094 case xk_Malloc: free(d->info.malloc_tofree); break;
1095 case xk_Artdata: SMfreearticle(d->info.sm_art); break;
1096 case xk_Const: break;
1101 static void *conn_write_some_xmits(Conn *conn) {
1103 * 0: nothing more to write, no need to call us again
1104 * OOP_CONTINUE: more to write but fd not writeable
1105 * OOP_HALT: disaster, have destroyed conn
1108 int count= conn->xmitu;
1109 if (!count) return 0;
1111 if (count > IOV_MAX) count= IOV_MAX;
1112 ssize_t rs= writev(conn->fd, conn->xmit, count);
1114 if (isewouldblock(errno)) return OOP_CONTINUE;
1115 connfail(conn, "write failed: %s", strerror(errno));
1121 for (done=0; rs && done<conn->xmitu; done++) {
1122 struct iovec *vp= &conn->xmit[done];
1123 XmitDetails *dp= &conn->xmitd[done];
1124 if (rs > vp->iov_len) {
1132 int newu= conn->xmitu - done;
1133 memmove(conn->xmit, conn->xmit + done, newu * sizeof(*conn->xmit));
1134 memmove(conn->xmitd, conn->xmitd + done, newu * sizeof(*conn->xmitd));
1139 static void conn_make_some_xmits(Conn *conn) {
1141 if (conn->xmitu+5 > CONNIOVS)
1144 Article *art= LIST_REMHEAD(conn->priority);
1145 if (!art) art= LIST_REMHEAD(conn->waiting);
1148 if (art->state >= art_Wanted || (conn->stream && nocheck)) {
1149 /* actually send it */
1151 ARTHANDLE *artdata= SMretrieve(art->token, RETR_ALL);
1155 XMIT_LITERAL("TAKETHIS ");
1156 xmit_noalloc(conn, art->messageid, art->midlen);
1157 XMIT_LITERAL("\r\n");
1158 xmit_artbody(conn, artdata);
1161 /* we got 235 from IHAVE */
1163 xmit_artbody(conn, artdata);
1165 XMIT_LITERAL(".\r\n");
1170 art->state == art_Unchecked ? art_Unsolicited :
1171 art->state == art_Wanted ? art_Wanted :
1173 art->ipf->counts[art->state][RC_sent]++;
1174 LIST_ADDTAIL(conn->sent, art);
1180 XMIT_LITERAL("IHAVE ");
1182 XMIT_LITERAL("CHECK ");
1183 xmit_noalloc(conn, art->messageid, art->midlen);
1184 XMIT_LITERAL("\r\n");
1186 assert(art->state == art_Unchecked);
1187 art->ipf->counts[art->state][RC_sent]++;
1188 LIST_ADDTAIL(conn->sent, art);
1194 /*========== handling responses from peer ==========*/
1196 static const oop_rd_style peer_rd_style= {
1197 OOP_RD_DELIM_STRIP, '\n',
1199 OOP_RD_SHORTREC_FORBID
1202 static void *peer_rd_err(oop_source *lp, oop_read *oread, oop_event ev,
1203 const char *errmsg, int errnoval,
1204 const char *data, size_t recsz, void *conn_v) {
1206 connfail(conn, "error receiving from peer: %s", errmsg);
1207 return OOP_CONTINUE;
1210 static Article *article_reply_check(Conn *conn, const char *response,
1211 int code_indicates_streaming,
1213 /* 1:yes, -1:no, 0:dontcare */,
1214 const char *sanitised_response) {
1215 Article *art= LIST_HEAD(conn->sent);
1219 "peer gave unexpected response when no commands outstanding: %s",
1220 sanitised_response);
1224 if (code_indicates_streaming) {
1225 assert(!memchr(response, 0, 4)); /* ensured by peer_rd_ok */
1226 if (!conn->stream) {
1227 connfail(conn, "peer gave streaming response code "
1228 " to IHAVE or subsequent body: %s", sanitised_response);
1231 const char *got_mid= response+4;
1232 int got_midlen= strcspn(got_mid, " \n\r");
1233 if (got_midlen<3 || got_mid[0]!='<' || got_mid[got_midlen-1]!='>') {
1234 connfail(conn, "peer gave streaming response with syntactically invalid"
1235 " messageid: %s", sanitised_response);
1238 if (got_midlen != art->midlen ||
1239 memcmp(got_mid, art->messageid, got_midlen)) {
1240 connfail(conn, "peer gave streaming response code to wrong article -"
1241 " probable synchronisation problem; we offered: %s;"
1243 art->messageid, sanitised_response);
1248 connfail(conn, "peer gave non-streaming response code to"
1249 " CHECK/TAKETHIS: %s", sanitised_response);
1254 if (must_have_sent>0 && art->state < art_Wanted) {
1255 connfail(conn, "peer says article accepted but"
1256 " we had not sent the body: %s", sanitised_response);
1259 if (must_have_sent<0 && art->state >= art_Wanted) {
1260 connfail(conn, "peer says please sent the article but we just did: %s",
1261 sanitised_response);
1265 Article *art_again= LIST_REMHEAD(conn->sent);
1266 assert(art_again == art);
1270 static void update_nocheck(int accepted) {
1271 accept_proportion *= nocheck_decay;
1272 accept_proportion += accepted * (1.0 - nocheck_decay);
1273 int new_nocheck= accept_proportion >= nocheck_thresh;
1274 if (new_nocheck && !nocheck_reported) {
1275 notice("entering nocheck mode for the first time");
1276 nocheck_reported= 1;
1277 } else if (new_nocheck != nocheck) {
1278 debug("nocheck mode %s", new_nocheck ? "start" : "stop");
1280 nocheck= new_nocheck;
1283 static void article_done(Conn *conn, Article *art, int whichcount) {
1284 art->ipf->counts[art->state][whichcount]++;
1285 if (whichcount == RC_accepted) update_nocheck(1);
1286 else if (whichcount == RC_unwanted) update_nocheck(0);
1288 InputFile *ipf= art->ipf;
1291 while (art->blanklen) {
1292 static const char spaces[]=
1297 int w= art->blanklen; if (w >= sizeof(spaces)) w= sizeof(spaces)-1;
1298 int r= pwrite(ipf->fd, spaces, w, art->offset);
1300 if (errno==EINTR) continue;
1301 sysdie("failed to blank entry for %s (length %d at offset %lu) in %s",
1302 art->messageid, art->blanklen, art->offset, ipf->path);
1304 assert(r>=0 && r<=w);
1310 assert(ipf->inprogress >= 0);
1313 if (!ipf->inprogress && ipf != main_input_file)
1314 queue_check_input_done();
1317 static void *peer_rd_ok(oop_source *lp, oop_read *oread, oop_event ev,
1318 const char *errmsg, int errnoval,
1319 const char *data, size_t recsz, void *conn_v) {
1322 if (ev == OOP_RD_EOF) {
1323 connfail(conn, "unexpected EOF from peer");
1324 return OOP_CONTINUE;
1326 assert(ev == OOP_RD_OK);
1328 char *sani= sanitise(data);
1331 unsigned long code= strtoul(data, &ep, 10);
1332 if (ep != data+3 || *ep != ' ' || data[0]=='0') {
1333 connfail(conn, "badly formatted response from peer: %s", sani);
1334 return OOP_CONTINUE;
1337 if (conn->quitting) {
1338 if (code!=205 && code!=503) {
1339 connfail(conn, "peer gave unexpected response to QUIT: %s", sani);
1341 notice("C%d idle connection closed", conn->fd);
1342 assert(!conn->waiting.count);
1343 assert(!conn->priority.count);
1344 assert(!conn->sent.count);
1345 assert(!conn->xmitu);
1346 LIST_REMOVE(conns,conn);
1349 return OOP_CONTINUE;
1352 conn->since_activity= 0;
1355 #define GET_ARTICLE(musthavesent) \
1356 art= article_reply_check(conn, data, musthavesent, code_streaming, sani); \
1357 if (art) ; else return OOP_CONTINUE /* reply_check has failed the conn */
1359 #define ARTICLE_DEALTWITH(streaming,musthavesent,how) \
1360 code_streaming= (streaming); \
1361 GET_ARTICLE(musthavesent); \
1362 article_done(conn, art, RC_##how); break;
1364 #define PEERBADMSG(m) connfail(conn, m ": %s", sani); return OOP_CONTINUE
1366 int code_streaming= 0;
1370 case 400: PEERBADMSG("peer stopped accepting articles");
1371 case 503: PEERBADMSG("peer timed us out");
1372 default: PEERBADMSG("peer sent unexpected message");
1374 case 435: ARTICLE_DEALTWITH(0,0,unwanted); /* IHAVE says they have it */
1375 case 438: ARTICLE_DEALTWITH(1,0,unwanted); /* CHECK/TAKETHIS: they have it */
1377 case 235: ARTICLE_DEALTWITH(0,1,accepted); /* IHAVE says thanks */
1378 case 239: ARTICLE_DEALTWITH(1,1,accepted); /* TAKETHIS says thanks */
1380 case 437: ARTICLE_DEALTWITH(0,0,rejected); /* IHAVE says rejected */
1381 case 439: ARTICLE_DEALTWITH(1,0,rejected); /* TAKETHIS says rejected */
1383 case 238: /* CHECK says send it */
1385 case 335: /* IHAVE says send it */
1387 assert(art->state == art_Unchecked);
1388 art->ipf->counts[art->state][RC_accepted]++;
1389 art->state= art_Wanted;
1390 LIST_ADDTAIL(conn->priority, art);
1393 case 431: /* CHECK or TAKETHIS says try later */
1395 case 436: /* IHAVE says try later */
1398 if (fprintf(defer, "%s %s\n", TokenToText(art->token), art->messageid) <0
1400 sysfatal("write to defer file %s",path_defer);
1401 article_done(conn, art, RC_deferred);
1406 conn_maybe_write(conn);
1407 check_master_queue();
1408 return OOP_CONTINUE;
1412 /*========== monitoring of input files ==========*/
1414 static void feedfile_eof(InputFile *ipf) {
1415 assert(ipf != main_input_file); /* promised by tailing_try_read */
1417 inputfile_tailing_stop(ipf);
1418 assert(ipf->fd > 0);
1419 fixme do not close fd do something else because art_done needs it to blank entries;
1420 if (close(ipf->fd)) sysdie("could not close input file %s", ipf->path);
1423 if (ipf == flushing_input_file) {
1424 assert(sms==sm_SEPARATED || sms==sm_DROPPING);
1425 if (main_input_file) inputfile_tailing_start(main_input_file);
1426 statemc_check_flushing_done();
1427 } else if (ipf == backlog_input_file) {
1428 statemc_check_backlog_done();
1430 abort(); /* supposed to wait rather than get EOF on main input file */
1434 static InputFile *open_input_file(const char *path) {
1435 int fd= open(path, O_RDONLY);
1437 if (errno==ENOENT) return 0;
1438 sysfatal("unable to open input file %s", path);
1442 InputFile *ipf= xmalloc(sizeof(*ipf) + strlen(path) + 1);
1443 memset(ipf,0,sizeof(*ipf));
1446 strcpy(ipf->path, path);
1451 static void close_input_file(InputFile *ipf) { /* does not free */
1452 assert(!ipf->readable_callback); /* must have had ->on_cancel */
1453 assert(!ipf->filemon); /* must have had inputfile_tailing_stop */
1454 assert(!ipf->rd); /* must have had inputfile_tailing_stop */
1455 assert(!ipf->inprogress); /* no dangling pointers pointing here */
1458 if (close(ipf->fd)) sysdie("could not close input file %s", ipf->path);
1464 /*---------- dealing with articles read in the input file ----------*/
1466 static void *feedfile_got_bad_data(InputFile *ipf, off_t offset,
1467 const char *data, const char *how) {
1468 warn("corrupted file: %s, offset %lu: %s: %s",
1469 ipf->path, (unsigned long)offset, how, sanitise(data));
1470 ipf->readcount_err++;
1471 if (ipf->readcount_err > max_bad_data_initial +
1472 (ipf->readcount_ok+ipf->readcount_blank) / max_bad_data_ratio)
1473 die("too much garbage in input file! (%d errs, %d ok, %d blank)",
1474 ipf->readcount_err, ipf->readcount_ok, ipf->readcount_blank);
1475 return OOP_CONTINUE;
1478 static void *feedfile_read_err(oop_source *lp, oop_read *rd,
1479 oop_rd_event ev, const char *errmsg,
1480 int errnoval, const char *data, size_t recsz,
1482 InputFile *ipf= ipf_v;
1483 assert(ev == OOP_RD_SYSTEM);
1485 sysdie("error reading input file: %s, offset %lu",
1486 ipf->path, (unsigned long)ipf->offset);
1489 static void *feedfile_got_article(oop_source *lp, oop_read *rd,
1490 oop_rd_event ev, const char *errmsg,
1491 int errnoval, const char *data, size_t recsz,
1493 InputFile *ipf= ipf_v;
1495 char tokentextbuf[sizeof(TOKEN)*2+3];
1497 if (!data) { feedfile_eof(ipf); return OOP_CONTINUE; }
1499 off_t old_offset= ipf->offset;
1500 ipf->offset += recsz + 1;
1502 #define X_BAD_DATA(m) return feedfile_got_bad_data(ipf,old_offset,data,m);
1504 if (ev==OOP_RD_PARTREC)
1505 feedfile_got_bad_data(ipf,old_offset,data,"missing final newline");
1506 /* but process it anyway */
1508 if (ipf->skippinglong) {
1509 if (ev==OOP_RD_OK) ipf->skippinglong= 0; /* fine now */
1512 if (ev==OOP_RD_LONG) {
1513 ipf->skippinglong= 1;
1514 X_BAD_DATA("overly long line");
1517 if (memchr(data,'\0',recsz)) X_BAD_DATA("nul byte");
1518 if (!recsz) X_BAD_DATA("empty line");
1521 if (strspn(data," ") != recsz) X_BAD_DATA("line partially blanked");
1522 ipf->readcount_blank++;
1523 return OOP_CONTINUE;
1526 char *space= strchr(data,' ');
1527 int tokenlen= space-data;
1528 int midlen= (int)recsz-tokenlen-1;
1529 if (midlen <= 2) X_BAD_DATA("no room for messageid");
1530 if (space[1]!='<' || space[midlen]!='>') X_BAD_DATA("invalid messageid");
1532 if (tokenlen != sizeof(TOKEN)*2+2) X_BAD_DATA("token wrong length");
1533 memcpy(tokentextbuf, data, tokenlen);
1534 tokentextbuf[tokenlen]= 0;
1535 if (!IsToken(tokentextbuf)) X_BAD_DATA("token wrong syntax");
1537 ipf->readcount_ok++;
1539 art= xmalloc(sizeof(*art) - 1 + midlen + 1);
1540 art->state= art_Unchecked;
1541 art->midlen= midlen;
1542 art->ipf= ipf; ipf->inprogress++;
1543 art->token= TextToToken(tokentextbuf);
1544 art->offset= ipf->offset;
1545 art->blanklen= recsz;
1546 strcpy(art->messageid, space+1);
1547 LIST_ADDTAIL(queue, art);
1549 if (sms==sm_NORMAL && ipf==main_input_file &&
1550 ipf->offset >= target_max_feedfile_size)
1551 statemc_start_flush("feed file size");
1553 check_master_queue();
1554 return OOP_CONTINUE;
1557 /*========== tailing input file ==========*/
1559 static void *tailing_rable_call_time(oop_source *loop, struct timeval tv,
1561 InputFile *ipf= user;
1562 return ipf->readable_callback(loop, &ipf->readable,
1563 ipf->readable_callback_user);
1566 static void tailing_on_cancel(struct oop_readable *rable) {
1567 InputFile *ipf= (void*)rable;
1569 if (ipf->filemon) filemon_stop(ipf);
1570 loop->cancel_time(loop, OOP_TIME_NOW, tailing_rable_call_time, ipf);
1571 ipf->readable_callback= 0;
1574 static void tailing_queue_readable(InputFile *ipf) {
1575 /* lifetime of ipf here is OK because destruction will cause
1576 * on_cancel which will cancel this callback */
1577 loop->on_time(loop, OOP_TIME_NOW, tailing_rable_call_time, ipf);
1580 static int tailing_on_readable(struct oop_readable *rable,
1581 oop_readable_call *cb, void *user) {
1582 InputFile *ipf= (void*)rable;
1584 tailing_on_cancel(rable);
1585 ipf->readable_callback= cb;
1586 ipf->readable_callback_user= user;
1589 tailing_queue_readable(ipf);
1593 static ssize_t tailing_try_read(struct oop_readable *rable, void *buffer,
1595 InputFile *ipf= (void*)rable;
1597 ssize_t r= read(ipf->fd, buffer, length);
1599 if (errno==EINTR) continue;
1603 if (ipf==main_input_file) {
1606 } else if (ipf==flushing_input_file) {
1608 assert(sms==sm_SEPARATED || sms==sm_DROPPING);
1609 } else if (ipf==backlog_input_file) {
1619 /*---------- filemon implemented with inotify ----------*/
1621 #if defined(HAVE_INOTIFY) && !defined(HAVE_FILEMON)
1622 #define HAVE_FILEMON
1624 #include <linux/inotify.h>
1626 static int filemon_inotify_fd;
1627 static int filemon_inotify_wdmax;
1628 static InputFile **filemon_inotify_wd2ipf;
1630 struct Filemon_Perfile {
1634 static void filemon_method_startfile(InputFile *ipf, Filemon_Perfile *pf) {
1635 int wd= inotify_add_watch(filemon_inotify_fd, ipf->path, IN_MODIFY);
1636 if (wd < 0) sysdie("inotify_add_watch %s", ipf->path);
1638 if (wd >= filemon_inotify_wdmax) {
1640 filemon_inotify_wd= xrealloc(filemon_inotify_wd2ipf,
1641 sizeof(*filemon_inotify_wd2ipf) * newmax);
1642 memset(filemon_inotify_wd2ipf + filemon_inotify_wdmax, 0,
1643 sizeof(*filemon_inotify_wd2ipf) * (newmax - filemon_inotify_wdmax));
1644 filemon_inotify_wdmax= newmax;
1647 assert(!filemon_inotify_wd2ipf[wd]);
1648 filemon_inotify_wd2ipf[wd]= ipf;
1650 debug("filemon inotify startfile %p wd=%d wdmax=%d",
1651 ipf, wd, filemon_inotify_wdmax);
1656 static void filemon_method_stopfile(InputFile *ipf, Filemon_Perfile *pf) {
1658 debug("filemon inotify stopfile %p wd=%d", ipf, wd);
1659 int r= inotify_rm_watch(filemon_inotify_fd, filemon_inotify_wd);
1660 if (r) sysdie("inotify_rm_watch");
1661 filemon_inotify_wd2ipf[wd]= 0;
1664 static void *filemon_inotify_readable(oop_source *lp, int fd,
1665 oop_event e, void *u) {
1666 struct inotify_event iev;
1668 int r= read(filemon_inotify_fd, &iev, sizeof(iev));
1670 if (isewouldblock(errno)) break;
1671 sysdie("read from inotify master");
1672 } else if (r==sizeof(iev)) {
1673 assert(iev.wd >= 0 && iev.wd < filemon_inotify_wdmax);
1675 die("inotify read %d bytes wanted struct of %d", r, (int)sizeof(iev));
1677 InputFile *ipf= filemon_inotify_wd2ipf[iev.wd];
1678 debug("filemon inotify readable read %p wd=%p", iev.wd, ipf);
1679 filemon_callback(ipf);
1681 return OOP_CONTINUE;
1684 static int filemon_method_init(void) {
1685 filemon_inotify_fd= inotify_init();
1686 if (filemon_inotify_fd<0) {
1687 syswarn("could not initialise inotify: inotify_init failed");
1691 loop->on_fd(loop, filemon_inotify_fd, OOP_READ, filemon_inotify_readable);
1693 debug("filemon inotify init filemon_inotify_fd=%d", filemon_inotify_fd);
1697 #endif /* HAVE_INOTIFY && !HAVE_FILEMON */
1699 /*---------- filemon dummy implementation ----------*/
1701 #if !defined(HAVE_FILEMON)
1703 struct Filemon_Perfile { int dummy; };
1705 static int filemon_method_init(void) { return 0; }
1706 static void filemon_method_startfile(InputFile *ipf, Filemon_Perfile *pf) { }
1707 static void filemon_method_stopfile(InputFile *ipf, Filemon_Perfile *pf) { }
1709 #endif /* !HAVE_FILEMON */
1711 /*---------- filemon generic interface ----------*/
1713 static void filemon_start(InputFile *ipf) {
1714 assert(!ipf->filemon);
1716 ipf->filemon= xmalloc(sizeof(*ipf->filemon));
1717 memset(ipf->filemon, 0, sizeof(*ipf->filemon));
1718 filemon_method_startfile(ipf, ipf->filemon);
1721 static void filemon_stop(InputFile *ipf) {
1722 if (!ipf->filemon) return;
1723 filemon_method_stopfile(ipf, ipf->filemon);
1728 static void filemon_callback(InputFile *ipf) {
1729 ipf->readable_callback(loop, &ipf->readable, ipf->readable_callback_user);
1732 /*---------- interface to start and stop an input file ----------*/
1734 static const oop_rd_style feedfile_rdstyle= {
1735 OOP_RD_DELIM_STRIP, '\n',
1737 OOP_RD_SHORTREC_LONG,
1740 static void inputfile_tailing_start(InputFile *ipf) {
1742 ipf->readable.on_readable= tailing_on_readable;
1743 ipf->readable.on_cancel= tailing_on_cancel;
1744 ipf->readable.try_read= tailing_try_read;
1745 ipf->readable.delete_tidy= 0; /* we never call oop_rd_delete_{tidy,kill} */
1746 ipf->readable.delete_kill= 0;
1748 ipf->readable_callback= 0;
1749 ipf->readable_callback_user= 0;
1751 ipf->rd= oop_rd_new(loop, &ipf->readable, 0,0);
1754 int r= oop_rd_read(ipf->rd, &feedfile_rdstyle, MAX_LINE_FEEDFILE,
1755 feedfile_got_article,ipf, feedfile_read_err, ipf);
1756 if (r) sysdie("unable start reading feedfile %s",ipf->path);
1759 static void inputfile_tailing_stop(InputFile *ipf) {
1761 oop_rd_cancel(ipf->rd);
1762 oop_rd_delete(ipf->rd);
1764 assert(!ipf->filemon); /* we shouldn't be monitoring it now */
1768 /*========== interaction with innd - state machine ==========*/
1770 /* See official state diagram at top of file. We implement
1781 |`---------------------------------------------------.
1783 |`---------------- - - - |
1784 D ENOENT | D EXISTS see OVERALL STATES diagram |
1785 | for full startup logic |
1788 | ============ try to |
1794 | | F IS SO BIG WE SHOULD FLUSH, OR TIMEOUT |
1795 ^ | hardlink F to D |
1798 | | our handle onto F is now onto D |
1801 | |<-------------------<---------------------<---------+
1803 | | spawn inndcomm flush |
1805 | ================== |
1806 | FLUSHING[-ABSENT] |
1808 | main D tail/none |
1809 | ================== |
1811 | | INNDCOMM FLUSH FAILS ^
1812 | |`----------------------->----------. |
1814 | | NO SUCH SITE V |
1815 ^ |`--------------->----. ==================== |
1816 | | \ FLUSHFAILED[-ABSENT] |
1818 | | FLUSH OK \ main D tail/none |
1819 | | open F \ ==================== |
1821 | | \ | TIME TO RETRY |
1822 | |`------->----. ,---<---'\ `----------------'
1823 | | D NONE | | D NONE `----.
1825 | ============= V V ============
1826 | SEPARATED-1 | | DROPPING-1
1827 | flsh->fd>0 | | flsh->fd>0
1828 | [Separated] | | [Dropping]
1829 | main F idle | | main none
1830 | old D tail | | old D tail
1831 | ============= | | ============
1833 ^ | EOF ON D | | defer | EOF ON D
1835 | =============== | | ===============
1836 | SEPARATED-2 | | DROPPING-2
1837 | flsh->fd==0 | V flsh->fd==0
1838 | [Finishing] | | [Dropping]
1839 | main F tail | `. main none
1840 | old D closed | `. old D closed
1841 | =============== V `. ===============
1843 | | ALL D PROCESSED `. | ALL D PROCESSED
1844 | V install defer as backlog `. | install defer
1845 ^ | close D `. | close D
1846 | | unlink D `. | unlink D
1849 `----------' ==============
1869 static void startup_set_input_file(InputFile *f) {
1870 assert(!main_input_file);
1872 inputfile_tailing_start(f);
1875 static void statemc_init(void) {
1876 struct stat stab, stabf;
1878 path_lock= xasprintf("%s_lock", feedfile);
1879 path_flushing= xasprintf("%s_flushing", feedfile);
1880 path_defer= xasprintf("%s_defer", feedfile);
1881 globpat_backlog= xasprintf("%s_backlog*", feedfile);
1884 int lockfd= open(path_lock, O_CREAT|O_RDWR, 0600);
1885 if (lockfd<0) sysfatal("open lockfile %s", path_lock);
1888 memset(&fl,0,sizeof(fl));
1890 fl.l_whence= SEEK_SET;
1891 int r= fcntl(lockfd, F_SETLK, &fl);
1893 if (errno==EACCES || isewouldblock(errno)) {
1894 if (quiet_multiple) exit(0);
1895 fatal("another duct holds the lockfile");
1897 sysdie("fcntl F_SETLK lockfile %s", path_lock);
1900 xfstat_isreg(lockfd, &stabf, path_lock, "lockfile");
1902 xlstat_isreg(path_lock, &stab, &lock_noent, "lockfile");
1904 if (!lock_noent && samefile(&stab, &stabf))
1908 sysdie("could not close stale lockfile %s", path_lock);
1910 debug("startup: locked");
1912 search_backlog_file();
1915 xlstat_isreg(path_defer, &stab, &defer_noent, "defer file");
1917 debug("startup: ductdefer ENOENT");
1919 debug("startup: ductdefer nlink=%ld", (long)stab.st_nlink);
1920 switch (stab.st_nlink==1) {
1922 open_defer(); /* so that we will later close it and rename it */
1925 xunlink(path_defer, "stale defer file link"
1926 " (presumably hardlink to backlog file)");
1929 die("defer file %s has unexpected link count %d",
1930 path_defer, stab.st_nlink);
1934 struct stat stab_f, stab_d;
1937 InputFile *file_d= open_input_file(path_flushing);
1938 if (file_d) xfstat_isreg(file_d->fd, &stab_d, path_flushing,"flushing file");
1940 xlstat_isreg(feedfile, &stab_f, &noent_f, "feedfile");
1942 if (!noent_f && file_d && samefile(&stab_f, &stab_d)) {
1943 debug("startup: F==D => Hardlinked");
1944 xunlink(feedfile, "feed file (during startup)"); /* => Moved */
1949 debug("startup: F ENOENT => Moved");
1950 if (file_d) startup_set_input_file(file_d);
1951 spawn_inndcomm_flush("feedfile missing at startup");
1952 /* => Flushing, sms:=FLUSHING */
1955 debug("startup: F!=D => Separated");
1956 startup_set_input_file(file_d);
1957 SMS(SEPARATED, 0, "found both old and current feed files");
1959 debug("startup: F exists, D ENOENT => Normal");
1960 InputFile *file_f= open_input_file(feedfile);
1961 if (!file_f) die("feed file vanished during startup");
1962 startup_set_input_file(file_f);
1963 SMS(NORMAL, flushfail_retry_periods, "normal startup");
1968 static void statemc_start_flush(const char *why) { /* Normal => Flushing */
1969 assert(sms == sm_NORMAL);
1971 debug("starting flush (%s) (%lu >?= %lu) (%d)",
1973 (unsigned long)(main_input_file ? main_input_file->offset : 0),
1974 (unsigned long)target_max_feedfile_size,
1977 int r= link(feedfile, path_flushing);
1978 if (r) sysdie("link feedfile %s to flushing file %s",
1979 feedfile, path_flushing);
1982 xunlink(feedfile, "old feedfile link");
1985 spawn_inndcomm_flush(why); /* => Flushing FLUSHING */
1988 static void statemc_period_poll(void) {
1989 if (!sm_period_counter) return;
1990 sm_period_counter--;
1991 assert(sm_period_counter>=0);
1993 if (sm_period_counter) return;
1996 statemc_start_flush("periodic"); /* Normal => Flushing; => FLUSHING */
1998 case sm_FLUSHFAILED:
1999 spawn_inndcomm_flush("retry"); /* Moved => Flushing; => FLUSHING */
2006 static int inputfile_is_done(InputFile *ipf) {
2008 if (ipf->inprogress) return 0; /* new article in the meantime */
2009 if (ipf->fd) return 0; /* not had EOF */
2013 static void notice_processed(InputFile *ipf, const char *what,
2015 #define RCI_NOTHING(x) /* nothing */
2016 #define RCI_TRIPLE_FMT(x) " " #x "=" RCI_TRIPLE_FMT_BASE
2017 #define RCI_TRIPLE_VALS(x) , RCI_TRIPLE_VALS_BASE(ipf->counts, [RC_##x])
2019 #define CNT(art,rc) (ipf->counts[art_##art][RC_##rc])
2021 info("processed %s%s read=%d(+%dbl,+%derr)"
2022 " offered=%d(ch%d,nc%d) accepted=%d(ch%d+nc%d)"
2023 RESULT_COUNTS(RCI_NOTHING, RCI_TRIPLE_FMT)
2026 ipf->readcount_ok, ipf->readcount_blank, ipf->readcount_err,
2027 CNT(Unchecked,sent) + CNT(Unsolicited,sent)
2028 , CNT(Unchecked,sent), CNT(Unsolicited,sent),
2029 CNT(Wanted,accepted) + CNT(Unsolicited,accepted)
2030 , CNT(Wanted,accepted), CNT(Unsolicited,accepted)
2031 RESULT_COUNTS(RCI_NOTHING, RCI_TRIPLE_VALS)
2037 static void statemc_check_backlog_done(void) {
2038 InputFile *ipf= backlog_input_file;
2039 if (!inputfile_is_done(ipf)) return;
2041 const char *slash= strrchr(ipf->path, '/');
2042 const char *leaf= slash ? slash+1 : ipf->path;
2043 const char *under= strchr(slash, '_');
2044 const char *rest= under ? under+1 : leaf;
2045 if (!strncmp(rest,"backlog",7)) rest += 7;
2046 notice_processed(ipf,"backlog:",rest);
2048 close_input_file(ipf);
2049 if (unlink(ipf->path)) {
2050 if (errno != ENOENT)
2051 sysdie("could not unlink processed backlog file %s", ipf->path);
2052 warn("backlog file %s vanished while we were reading it"
2053 " so we couldn't remove it (but it's done now, anyway)",
2057 backlog_input_file= 0;
2058 search_backlog_file();
2062 static void statemc_check_flushing_done(void) {
2063 InputFile *ipf= flushing_input_file;
2064 if (!inputfile_is_done(ipf)) return;
2066 assert(sms==sm_SEPARATED || sms==sm_DROPPING);
2068 notice_processed(ipf,"feedfile",0);
2072 xunlink(path_flushing, "old flushing file");
2074 close_input_file(flushing_input_file);
2075 free(flushing_input_file);
2076 flushing_input_file= 0;
2078 if (sms==sm_SEPARATED) {
2079 notice("flush complete");
2080 SMS(NORMAL, 0, "flush complete");
2081 } else if (sms==sm_DROPPING) {
2082 SMS(DROPPED, 0, "old flush complete");
2083 search_backlog_file();
2084 notice("feed dropped, but will continue until backlog is finished");
2088 static void *statemc_check_input_done(oop_source *lp, struct timeval now,
2090 assert(!inputfile_is_done(main_input_file));
2091 statemc_check_flushing_done();
2092 statemc_check_backlog_done();
2093 return OOP_CONTINUE;
2096 static void queue_check_input_done(void) {
2097 loop->on_time(loop, OOP_TIME_NOW, statemc_check_input_done, 0);
2100 static void statemc_setstate(StateMachineState newsms, int periods,
2101 const char *forlog, const char *why) {
2103 sm_period_counter= periods;
2105 const char *xtra= "";
2107 case sm_FLUSHING: sm_FLUSHFAILED:
2108 if (!main_input_file) xtra= "-ABSENT";
2110 case sm_SEPARATED: case sm_DROPPING:
2111 xtra= flushing_input_file->fd ? "-1" : "-2";
2117 info("%s%s[%d] %s",forlog,xtra,periods,why);
2119 info("%s%s %s",forlog,xtra,why);
2123 /*---------- defer and backlog files ----------*/
2125 static void open_defer(void) {
2130 defer= fopen(path_defer, "a+");
2131 if (!defer) sysfatal("could not open defer file %s", path_defer);
2133 /* truncate away any half-written records */
2135 xfstat_isreg(fileno(defer), &stab, path_defer, "newly opened defer file");
2137 if (stab.st_size > LONG_MAX)
2138 die("defer file %s size is far too large", path_defer);
2143 long orgsize= stab.st_size;
2144 long truncto= stab.st_size;
2146 if (!truncto) break; /* was only (if anything) one half-truncated record */
2147 if (fseek(defer, truncto-1, SEEK_SET) < 0)
2148 sysdie("seek in defer file %s while truncating partial", path_defer);
2153 sysdie("failed read from defer file %s", path_defer);
2155 die("defer file %s shrank while we were checking it!", path_defer);
2161 if (stab.st_size != truncto) {
2162 warn("truncating half-record at end of defer file %s -"
2163 " shrinking by %ld bytes from %ld to %ld",
2164 path_defer, orgsize - truncto, orgsize, truncto);
2167 sysfatal("could not flush defer file %s", path_defer);
2168 if (ftruncate(fileno(defer), truncto))
2169 sysdie("could not truncate defer file %s", path_defer);
2172 info("continuing existing defer file %s (%ld bytes)",
2173 path_defer, orgsize);
2175 if (fseek(defer, truncto, SEEK_SET))
2176 sysdie("could not seek to new end of defer file %s", path_defer);
2179 static void close_defer(void) {
2184 xfstat_isreg(fileno(defer), &stab, path_defer, "defer file");
2186 if (fclose(defer)) sysfatal("could not close defer file %s", path_defer);
2189 time_t now= xtime();
2191 char *backlog= xasprintf("%s_backlog_%lu.%lu", feedfile,
2193 (unsigned long)stab.st_ino);
2194 if (link(path_defer, backlog))
2195 sysfatal("could not install defer file %s as backlog file %s",
2196 path_defer, backlog);
2197 if (unlink(path_defer))
2198 sysdie("could not unlink old defer link %s to backlog file %s",
2199 path_defer, backlog);
2203 if (until_backlog_nextscan < 0 ||
2204 until_backlog_nextscan > backlog_retry_minperiods + 1)
2205 until_backlog_nextscan= backlog_retry_minperiods + 1;
2208 static void poll_backlog_file(void) {
2209 if (until_backlog_nextscan < 0) return;
2210 if (until_backlog_nextscan-- > 0) return;
2211 search_backlog_file();
2214 static void search_backlog_file(void) {
2215 /* returns non-0 iff there are any backlog files */
2220 const char *oldest_path=0;
2221 time_t oldest_mtime, now;
2223 if (backlog_input_file) return;
2227 r= glob(globpat_backlog, GLOB_ERR|GLOB_MARK|GLOB_NOSORT, 0, &gl);
2231 sysdie("failed to expand backlog pattern %s", globpat_backlog);
2233 die("out of memory expanding backlog pattern %s", globpat_backlog);
2235 for (i=0; i<gl.gl_pathc; i++) {
2236 const char *path= gl.gl_pathv[i];
2238 if (strchr(path,'#') || strchr(path,'~')) {
2239 debug("backlog file search skipping %s", path);
2242 r= stat(path, &stab);
2244 syswarn("failed to stat backlog file %s", path);
2247 if (!S_ISREG(stab.st_mode)) {
2248 warn("backlog file %s is not a plain file (or link to one)", path);
2251 if (!oldest_path || stab.st_mtime < oldest_mtime) {
2253 oldest_mtime= stab.st_mtime;
2256 case GLOB_NOMATCH: /* fall through */
2259 sysdie("glob expansion of backlog pattern %s gave unexpected"
2260 " nonzero (error?) return value %d", globpat_backlog, r);
2266 debug("backlog scan: none");
2268 if (sms==sm_DROPPED) {
2269 notice("feed dropped and our work is complete");
2270 xunlink(path_lock, "lockfile for old feed");
2273 until_backlog_nextscan= backlog_spontaneous_rescan_periods;
2278 double age= difftime(now, oldest_mtime);
2279 long age_deficiency= (backlog_retry_minperiods * period_seconds) - age;
2281 if (age_deficiency <= 0) {
2282 debug("backlog scan: found age=%f deficiency=%ld oldest=%s",
2283 age, age_deficiency, oldest_path);
2285 backlog_input_file= open_input_file(oldest_path);
2286 if (!backlog_input_file) {
2287 warn("backlog file %s vanished as we opened it", backlog_input_file);
2290 inputfile_tailing_start(backlog_input_file);
2291 until_backlog_nextscan= -1;
2295 until_backlog_nextscan= age_deficiency / period_seconds;
2297 if (backlog_spontaneous_rescan_periods >= 0 &&
2298 until_backlog_nextscan > backlog_spontaneous_rescan_periods)
2299 until_backlog_nextscan= backlog_spontaneous_rescan_periods;
2301 debug("backlog scan: young age=%f deficiency=%ld nextscan=%d oldest=%s",
2302 age, age_deficiency, until_backlog_nextscan, oldest_path);
2306 /*========== flushing the feed ==========*/
2308 static pid_t inndcomm_child;
2310 static void *inndcomm_event(oop_source *lp, int fd, oop_event e, void *u) {
2311 assert(inndcomm_child);
2312 int status= xwaitpid(&inndcomm_child, "inndcomm");
2313 cancel_fd_read_except(fd);
2316 assert(!flushing_input_file);
2318 if (WIFEXITED(status)) {
2319 switch (WEXITSTATUS(status)) {
2321 case INNDCOMMCHILD_ESTATUS_FAIL:
2324 case INNDCOMMCHILD_ESTATUS_NONESUCH:
2325 warn("feed has been dropped by innd, finishing up");
2326 flushing_input_file= main_input_file;
2327 tailing_queue_readable(flushing_input_file);
2328 /* we probably previously returned EAGAIN from our fake read method
2329 * when in fact we were at EOF, so signal another readable event
2330 * so we actually see the EOF */
2334 if (flushing_input_file) {
2335 SMS(DROPPING, 0, "feed dropped by innd, but must finish last flush");
2338 SMS(DROPPED, 0, "feed dropped by innd");
2339 search_backlog_file();
2341 return OOP_CONTINUE;
2345 flushing_input_file= main_input_file;
2346 tailing_queue_readable(flushing_input_file);
2348 main_input_file= open_input_file(feedfile);
2349 if (!main_input_file)
2350 die("flush succeeded but feedfile %s does not exist!", feedfile);
2352 if (flushing_input_file) {
2353 SMS(SEPARATED, spontaneous_flush_periods, "recovery flush complete");
2356 SMS(NORMAL, spontaneous_flush_periods, "flush complete");
2358 return OOP_CONTINUE;
2361 goto unexpected_exitstatus;
2364 } else if (WIFSIGNALED(status) && WTERMSIG(status) == SIGALRM) {
2365 warn("flush timed out trying to talk to innd");
2368 unexpected_exitstatus:
2369 report_child_status("inndcomm child", status);
2373 SMS(FLUSHFAILED, flushfail_retry_periods, "flush failed, will retry");
2376 static void inndcommfail(const char *what) {
2377 syswarn("error communicating with innd: %s failed: %s", what, ICCfailure);
2378 exit(INNDCOMMCHILD_ESTATUS_FAIL);
2381 void spawn_inndcomm_flush(const char *why) { /* Moved => Flushing */
2384 notice("flushing %s",why);
2386 assert(sms==sm_NORMAL || sms==sm_FLUSHFAILED);
2387 assert(!inndcomm_child);
2389 if (pipe(pipefds)) sysdie("create pipe for inndcomm child sentinel");
2391 inndcomm_child= xfork("inndcomm child");
2393 if (!inndcomm_child) {
2394 const char *flushargv[2]= { sitename, 0 };
2400 alarm(inndcomm_flush_timeout);
2401 r= ICCopen(); if (r) inndcommfail("connect");
2402 r= ICCcommand('f',flushargv,&reply); if (r<0) inndcommfail("transmit");
2403 if (!r) exit(0); /* yay! */
2405 if (!strcmp(reply, "1 No such site")) exit(INNDCOMMCHILD_ESTATUS_NONESUCH);
2406 syswarn("innd ctlinnd flush failed: innd said %s", reply);
2407 exit(INNDCOMMCHILD_ESTATUS_FAIL);
2411 int sentinel_fd= pipefds[0];
2412 on_fd_read_except(sentinel_fd, inndcomm_event);
2414 SMS(FLUSHING, 0, why);
2417 /*========== main program ==========*/
2419 static void postfork_inputfile(InputFile *ipf) {
2422 perhaps_close(&ipf->fd);
2425 static void postfork_stdio(FILE *f) {
2426 /* we have no stdio streams that are buffered long-term */
2430 static void postfork(const char *what) {
2431 if (signal(SIGPIPE, SIG_DFL) == SIG_ERR)
2432 sysdie("%s child: failed to reset SIGPIPE");
2434 postfork_inputfile(main_input_file);
2435 postfork_inputfile(flushing_input_file);
2438 for (conn=LIST_HEAD(conns); conn; conn=LIST_NEXT(conn))
2441 postfork_stdio(defer);
2444 #define EVERY(what, interval_sec, interval_usec, body) \
2445 static struct timeval what##_timeout = { interval_sec, interval_usec }; \
2446 static void what##_schedule(void); \
2447 static void *what##_timedout(oop_source *lp, struct timeval tv, void *u) { \
2449 what##_schedule(); \
2451 static void what##_schedule(void) { \
2452 loop->on_time(loop, what##_timeout, what##_timedout, 0); \
2455 EVERY(filepoll, 5,0, {
2456 if (main_input_file && main_input_file->readable_callback)
2457 filemon_callback(main_input_file);
2460 #define DEBUGF_IPF(wh) " " #wh "=%p/%s:ip=%ld,off=%ld,fd=%d%s"
2461 #define DEBUG_IPF(wh) \
2462 wh##_input_file, debug_ipf_path(wh##_input_file), \
2463 wh##_input_file->inprogress, (long)wh##_input_file->offset, \
2464 wh##_input_file->fd, wh##_input_file->rd ? "+" : ""
2465 static const char *debug_ipf_path(InputFile *ipf) {
2466 char *slash= strrchr(ipf->path,'/');
2467 return slash ? slash+1 : ipf->path;
2470 EVERY(period, -1,0, {
2472 " sms=%s[%d] conns=%d queue=%d until_connect=%d"
2473 " input_files" DEBUGF_IPF(main) DEBUGF_IPF(old) DEBUGF_IPF(flushing)
2474 " children connecting=%ld inndcomm_child"
2476 sms_names[sms], sm_period_counter,
2477 queue.count, conns.count, until_connect,
2478 DEBUG_IPF(main), DEBUG_IPF(flushing), DEBUG_IPF(flushing),
2479 (long)connecting_child, (long)inndcomm_child
2482 if (until_connect) until_connect--;
2484 poll_backlog_file();
2485 if (!backlog_input_file) close_defer(); /* want to start on a new backlog */
2486 statemc_period_poll();
2487 check_master_queue();
2492 /*========== option parsing ==========*/
2494 /*---------- generic option parser and logging ----------*/
2496 static void vbadusage(const char *fmt, va_list al) NORET_PRINTF(1,0);
2497 static void vbadusage(const char *fmt, va_list al) {
2500 static void badusage(const char *fmt, ...) NORET_PRINTF(1,2);
2501 static void badusage(const char *fmt, ...) {
2508 of_seconds= 001000u,
2509 of_boolean= 002000u,
2512 typedef struct Option Option;
2513 typedef void OptionParser(const Option*, const char *val);
2523 /*---------- specific option types ----------*/
2525 static void op_integer(const Option *o, const char *val) {
2528 unsigned long ul= strtoul(val,&ep,10);
2529 if (*ep || ep==val || errno || ul>INT_MAX)
2530 badusage("bad integer value for %s",o->lng);
2531 int *store= o->store;
2535 static void op_double(const Option *o, const char *val) {
2536 int *store= o->store;
2539 *store= strtod(val, &ep);
2540 if (*ep || ep==val || errno)
2541 badusage("bad floating point value for %s",o->lng);
2544 static void op_string(const Option *o, const char *val) {
2545 const char **store= o->store;
2549 static void op_seconds(const Option *o, const char *val) {
2550 int *store= o->store;
2554 double v= strtod(val,&ep);
2555 if (ep==val) badusage("bad time/duration value for %s",o->lng);
2557 if (!*ep || !strcmp(ep,"s")) unit= 1;
2558 else if (!strcmp(ep,"m")) unit= 60;
2559 else if (!strcmp(ep,"h")) unit= 3600;
2560 else if (!strcmp(ep,"d")) unit= 86400;
2561 else badusage("bad units %s for time/duration value for %s",ep,o->lng);
2565 if (v > INT_MAX) badusage("time/duration value for %s out of range",o->lng);
2569 static void op_periods_rndup(const Option *o, const char *val) {
2570 int *store= o->store;
2572 *store += period_seconds-1;
2573 *store /= period_seconds;
2576 static void op_setint(const Option *o, const char *val) {
2577 int *store= o->store;
2581 /*---------- specific options ----------*/
2583 static const Option options[]= {
2584 {'f',"feedfile", &feedfile, op_string },
2585 {'q',"quiet-multiple", &quiet_multiple, op_setint, 1,1 },
2587 { 0, "max-connections", &max_connections, op_integer },
2588 { 0, "max-queue-per-conn", &max_queue_per_conn, op_integer },
2591 { 0, "streaming", &try_stream, op_setint, 1,1 },
2592 { 0, "no-streaming", &try_stream, op_setint, 1,0 },
2593 {'P',"port", &port, op_integer },
2594 { 0, "inndconf", &inndconffile, op_string },
2595 {'d',"daemon", &become_daemon, op_setint, 1,1 },
2596 { 0, "no-daemon", &become_daemon, op_setint, 1,0 },
2598 { 0, "no-check-proportion", &nocheck_thresh_pct, op_double },
2599 { 0, "no-check-filter", &nocheck_decay_articles, op_double },
2601 { 0, "reconnect-interval", &reconnect_delay_periods, op_periods_rndup },
2602 { 0, "flush-retry-interval", &flushfail_retry_periods, op_periods_rndup },
2603 { 0, "inndcomm-timeout", &inndcomm_flush_timeout, op_seconds },
2606 int main(int argc, char **argv) {
2612 if (*arg != '-') break;
2613 if (!strcmp(arg,"--")) { arg= *++argv; break; }
2615 while ((a= *++arg)) {
2619 char *equals= strchr(arg,'=');
2620 int len= equals ? (equals - arg) : strlen(arg);
2621 for (o=options; o->lng; o++)
2622 if (strlen(o->lng) == len && !memcmp(o->lng,arg,len))
2624 badusage("unknown long option --%s",arg);
2627 if (equals) badusage("option --%s does not take a value",o->lng);
2629 } else if (equals) {
2633 if (!arg) badusage("option --%s needs a value",o->lng);
2636 break; /* eaten the whole argument now */
2638 for (o=options; o->lng; o++)
2641 badusage("unknown short option -%c",a);
2648 if (!arg) badusage("option -%c needs a value",o->shrt);
2651 break; /* eaten the whole argument now */
2656 if (!arg) badusage("need site name argument");
2662 if (*++argv) badusage("too many non-option arguments");
2664 if (nocheck_thresh_pct < 0 || nocheck_thresh_pct > 100)
2665 badusage("nocheck threshold percentage must be between 0..100");
2666 nocheck_thresh= nocheck_thresh_pct * 0.01;
2668 if (nocheck_decay_articles < 0.1)
2669 badusage("nocheck decay articles must be at least 0.1");
2670 nocheck_decay= 1 - 1/nocheck_decay_articles;
2673 pathoutgoing= innconf->pathoutgoing;
2674 innconf_read(inndconffile);
2677 feedfile= xasprintf("%s/%s",pathoutgoing,sitename);
2678 else if (!feedfile[0])
2679 badusage("feed filename must be nonempty");
2680 else if (feedfile[strlen(feedfile)-1]=='/')
2681 feedfile= xasprintf("%s%s",feedfile,sitename);
2683 const char *feedfile_forbidden= "?*[~#";
2685 while ((c= *feedfile_forbidden++))
2686 if (strchr(feedfile, c))
2687 badusage("feed filename may not contain metacharacter %c",c);
2689 oop_source_sys *sysloop= oop_sys_new();
2690 if (!sysloop) sysdie("could not create liboop event loop");
2691 loop= (oop_source*)sysloop;
2693 if (signal(SIGPIPE, SIG_IGN) == SIG_ERR)
2694 sysdie("could not ignore SIGPIPE");
2696 if (become_daemon) {
2698 for (i=3; i<255; i++)
2699 /* do this now before we open syslog, etc. */
2701 openlog("innduct",LOG_NDELAY|LOG_PID,LOG_NEWS);
2703 int null= open("/dev/null",O_RDWR);
2704 if (null<0) sysdie("failed to open /dev/null");
2710 pid_t child1= xfork("daemonise first fork");
2711 if (child1) _exit(0);
2713 pid_t sid= setsid();
2714 if (sid != child1) sysdie("setsid failed");
2716 pid_t child2= xfork("daemonise second fork");
2717 if (child2) _exit(0);
2725 if (!filemon_method_init()) {
2726 warn("no file monitoring available, polling");
2727 filepoll_schedule();
2730 period_timeout.tv_sec= period_seconds;
2735 void *r= oop_sys_run(sysloop);
2736 assert(r == OOP_ERROR);
2737 sysdie("event loop failed");