3 * - check all structs initialised
4 * - check all fd watches properly undone
5 * - check all init functions called
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_HEAD(l) ((typeof((l).hd))(list_head((struct list*)&(l))))
242 #define LIST_NEXT(n) ((typeof(n))list_succ(NODE((n))))
243 #define LIST_BACK(n) ((typeof(n))list_pred(NODE((n))))
245 #define LIST_REMOVE(l,n) \
246 ( LIST_CHECKCANHAVENODE(l,n), \
247 list_remove(NODE((n))), \
251 #define LIST_INSERT(l,n,pred) \
252 ( LIST_CHECKCANHAVENODE(l,n), \
253 LIST_CHECKCANHAVENODE(l,pred), \
254 list_insert((struct list*)&(l), NODE((n)), NODE((pred))), \
258 /*----- type predeclarations -----*/
260 typedef struct Conn Conn;
261 typedef struct Article Article;
262 typedef struct InputFile InputFile;
263 typedef struct XmitDetails XmitDetails;
264 typedef struct Filemon_Perfile Filemon_Perfile;
265 typedef enum StateMachineState StateMachineState;
270 /*----- function predeclarations -----*/
272 static void conn_maybe_write(Conn *conn);
273 static void conn_make_some_xmits(Conn *conn);
274 static void *conn_write_some_xmits(Conn *conn);
276 static void xmit_free(XmitDetails *d);
278 static void statemc_setstate(StateMachineState newsms, int periods,
279 const char *forlog, const char *why);
280 static void statemc_start_flush(const char *why); /* Normal => Flushing */
281 static void spawn_inndcomm_flush(const char *why); /* Moved => Flushing */
283 static void check_master_queue(void);
284 static void queue_check_input_done(void);
286 static void statemc_check_flushing_done(void);
287 static void statemc_check_backlog_done(void);
289 static void postfork(const char *what);
290 static void postfork_inputfile(InputFile *ipf);
292 static void open_defer(void);
293 static void close_defer(void);
294 static void search_backlog_file(void);
296 static void inputfile_tailing_start(InputFile *ipf);
297 static void inputfile_tailing_stop(InputFile *ipf);
299 static int filemon_init(void);
300 static void filemon_start(InputFile *ipf);
301 static void filemon_stop(InputFile *ipf);
302 static void filemon_callback(InputFile *ipf);
304 static void vconnfail(Conn *conn, const char *fmt, va_list al) PRINTF(2,0);
305 static void connfail(Conn *conn, const char *fmt, ...) PRINTF(2,3);
307 /*----- configuration options -----*/
309 static const char *sitename, *feedfile, *pathoutgoing;
310 static const char *remote_host;
311 static int quiet_multiple=0, become_daemon=1;
313 static int max_connections=10, max_queue_per_conn=200;
314 static int target_max_feedfile_size=100000;
316 static int period_seconds=60;
318 static double max_bad_data_ratio= 0.01;
319 static int max_bad_data_initial= 30;
320 /* in one corrupt 4096-byte block the number of newlines has
321 * mean 16 and standard deviation 3.99. 30 corresponds to z=+3.5 */
323 static int connection_setup_timeout=200, port=119, try_stream=1;
324 static int inndcomm_flush_timeout=100;
325 static int reconnect_delay_periods, flushfail_retry_periods, open_wait_periods;
326 static int backlog_retry_minperiods, backlog_spontaneous_rescan_periods;
327 static int spontaneous_flush_periods, need_activity_periods;
328 static const char *inndconffile;
330 static double nocheck_thresh_pct= 95.0;
331 static double nocheck_thresh; /* computed in main from _pct */
332 static double nocheck_decay_articles= 100; /* converted to _decay */
333 static double nocheck_decay; /* computed in main from _articles */
336 /*----- statistics -----*/
338 typedef enum { /* in queue in conn->sent */
339 art_Unchecked, /* not checked, not sent checking */
340 art_Wanted, /* checked, wanted sent body as requested */
341 art_Unsolicited, /* - sent body without check */
345 #define RESULT_COUNTS(RCS,RCN) \
353 #define RCI_TRIPLE_FMT_BASE "%d(id%d+bd%d+nc%d)"
354 #define RCI_TRIPLE_VALS_BASE(counts,x) \
355 counts[art_Unchecked] x \
356 + counts[art_Wanted] x \
357 + counts[art_Unsolicited] x, \
358 counts[art_Unchecked] x \
359 , counts[art_Wanted] x \
360 , counts[art_Unsolicited] x
363 #define RC_INDEX(x) RC_##x,
364 RESULT_COUNTS(RC_INDEX, RC_INDEX)
369 /*----- transmission buffers -----*/
374 xk_Malloc, xk_Const, xk_Artdata
386 /*----- core operational data structure types -----*/
389 /* This is also an instance of struct oop_readable */
390 struct oop_readable readable; /* first */
391 oop_readable_call *readable_callback;
392 void *readable_callback_user;
395 Filemon_Perfile *filemon;
398 long inprogress; /* no. of articles read but not processed */
402 int counts[art_MaxState][RCI_max];
403 int readcount_ok, readcount_blank, readcount_err;
418 #define SMS_LIST(X) \
426 enum StateMachineState {
427 #define SMS_DEF_ENUM(s) sm_##s,
428 SMS_LIST(SMS_DEF_ENUM)
431 static const char *sms_names[]= {
432 #define SMS_DEF_NAME(s) #s ,
433 SMS_LIST(SMS_DEF_NAME)
439 int fd, max_queue, stream, quitting;
440 int since_activity; /* periods */
441 ArticleList waiting; /* not yet told peer */
442 ArticleList priority; /* peer says send it now */
443 ArticleList sent; /* offered/transmitted - in xmit or waiting reply */
444 struct iovec xmit[CONNIOVS];
445 XmitDetails xmitd[CONNIOVS];
450 /*----- operational variables -----*/
452 static oop_source *loop;
454 static int until_connect;
455 static ConnList conns;
456 static ArticleList queue;
458 static char *path_lock, *path_flushing, *path_defer, *globpat_backlog;
460 #define SMS(newstate, periods, why) \
461 (statemc_setstate(sm_##newstate,(periods),#newstate,(why)))
463 static StateMachineState sms;
465 static InputFile *main_input_file, *flushing_input_file, *backlog_input_file;
466 static int sm_period_counter, 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) {
682 perhaps_close(&conn->fd);
684 until_connect= reconnect_delay_periods;
687 static int connecting_sockets[2]= {-1,-1};
688 static pid_t connecting_child;
690 static void connect_attempt_discard(void) {
691 if (connecting_sockets[0])
692 cancel_fd_read_except(connecting_sockets[0]);
694 perhaps_close(&connecting_sockets[0]);
695 perhaps_close(&connecting_sockets[1]);
697 if (connecting_child) {
698 int r= kill(connecting_child, SIGTERM);
699 if (r) syswarn("failed to kill connecting child");
700 int status= xwaitpid(&connecting_child, "connect");
702 if (!(WIFEXITED(status) ||
703 (WIFSIGNALED(status) && WTERMSIG(status) == SIGKILL)))
704 report_child_status("connect", status);
708 #define PREP_DECL_MSG_CMSG(msg) \
710 memset(&msg,0,sizeof(msg)); \
711 char msg##cbuf[CMSG_SPACE(sizeof(fd))]; \
712 msg.msg_control= msg##cbuf; \
713 msg.msg_controllen= sizeof(msg##cbuf);
715 static void *connchild_event(oop_source *lp, int fd, oop_event e, void *u) {
718 conn= xmalloc(sizeof(*conn));
719 memset(conn,0,sizeof(*conn));
721 PREP_DECL_MSG_CMSG(msg);
722 struct cmsghdr *h= 0;
723 ssize_t rs= recvmsg(fd, &msg, MSG_DONTWAIT);
724 if (rs >= 0) h= CMSG_FIRSTHDR(&msg);
727 pid_t got= waitpid(connecting_child, &status, WNOHANG);
729 assert(got==connecting_child);
731 if (WIFEXITED(status) &&
732 (WEXITSTATUS(status) != 0 &&
733 WEXITSTATUS(status) != CONNCHILD_ESTATUS_STREAM &&
734 WEXITSTATUS(status) != CONNCHILD_ESTATUS_NOSTREAM)) {
735 /* child already reported the problem */
736 } else if (WIFSIGNALED(status) && WTERMSIG(status) == SIGALRM) {
737 warn("connect: connection attempt timed out");
738 } else if (!WIFEXITED(status)) {
739 report_child_status("connect", status);
740 /* that's probably the root cause then */
743 /* child is still running apparently, report the socket problem */
745 syswarn("connect: read from child socket failed");
746 else if (e == OOP_EXCEPTION)
747 warn("connect: unexpected exception on child socket");
749 warn("connect: unexpected EOF on child socket");
754 #define CHK(field, val) \
755 if (h->cmsg_##field != val) { \
756 die("connect: child sent cmsg with cmsg_" #field "=%d, expected %d"); \
759 CHK(level, SOL_SOCKET);
760 CHK(type, SCM_RIGHTS);
761 CHK(len, CMSG_LEN(sizeof(conn->fd)));
764 if (CMSG_NXTHDR(&msg,h)) { die("connect: child sent many cmsgs"); goto x; }
766 memcpy(&conn->fd, CMSG_DATA(h), sizeof(conn->fd));
769 pid_t got= waitpid(connecting_child, &status, 0);
770 if (got==-1) sysdie("connect: real wait for child");
771 assert(got == connecting_child);
774 if (!WIFEXITED(status)) { report_child_status("connect",status); goto x; }
775 int es= WEXITSTATUS(status);
777 case CONNCHILD_ESTATUS_STREAM: conn->stream= 1; break;
778 case CONNCHILD_ESTATUS_NOSTREAM: conn->stream= 0; break;
780 fatal("connect: child gave unexpected exit status %d", es);
784 setnonblock(conn->fd, 1);
785 conn->max_queue= conn->stream ? max_queue_per_conn : 1;
786 LIST_ADDHEAD(conns, conn);
787 notice("C%d connected %s", conn->fd, conn->stream ? "streaming" : "plain");
788 connect_attempt_discard();
789 check_master_queue();
794 connect_attempt_discard();
797 static int allow_connect_start(void) {
798 return conns.count < max_connections
803 static void connect_start(void) {
804 assert(!connecting_sockets[0]);
805 assert(!connecting_sockets[1]);
806 assert(!connecting_child);
808 notice("starting connection attempt");
810 int r= socketpair(AF_UNIX, SOCK_STREAM, 0, connecting_sockets);
811 if (r) { syswarn("connect: cannot create socketpair for child"); goto x; }
813 connecting_child= xfork("connection");
815 if (!connecting_child) {
816 FILE *cn_from, *cn_to;
817 char buf[NNTP_STRLEN+100];
818 int exitstatus= CONNCHILD_ESTATUS_NOSTREAM;
820 r= close(connecting_sockets[0]);
821 if (r) sysdie("connect: close parent socket in child");
823 alarm(connection_setup_timeout);
824 if (NNTPconnect((char*)remote_host, port, &cn_from, &cn_to, buf) < 0) {
825 if (buf[0]) fatal("connect: rejected: %s", sanitise(buf));
826 else sysfatal("connect: connection attempt failed");
828 if (NNTPsendpassword((char*)remote_host, cn_from, cn_to) < 0)
829 sysfatal("connect: authentication failed");
831 if (fputs("MODE STREAM\r\n", cn_to) ||
833 sysfatal("connect: could not send MODE STREAM");
834 buf[sizeof(buf)-1]= 0;
835 if (!fgets(buf, sizeof(buf)-1, cn_from)) {
837 sysfatal("connect: could not read response to MODE STREAM");
839 fatal("connect: connection close in response to MODE STREAM");
844 fatal("connect: response to MODE STREAM is too long: %.100s...",
845 remote_host, sanitise(buf));
846 l--; if (l>0 && buf[l-1]=='\r') l--;
849 int rcode= strtoul(buf,&ep,10);
851 fatal("connect: bad response to MODE STREAM: %.50s", sanitise(buf));
855 exitstatus= CONNCHILD_ESTATUS_STREAM;
861 warn("connect: unexpected response to MODE STREAM: %.50s",
867 int fd= fileno(cn_from);
869 PREP_DECL_MSG_CMSG(msg);
870 struct cmsghdr *cmsg= CMSG_FIRSTHDR(&msg);
871 cmsg->cmsg_level= SOL_SOCKET;
872 cmsg->cmsg_type= SCM_RIGHTS;
873 cmsg->cmsg_len= CMSG_LEN(sizeof(fd));
874 memcpy(CMSG_DATA(cmsg), &fd, sizeof(fd));
876 msg.msg_controllen= cmsg->cmsg_len;
877 r= sendmsg(connecting_sockets[1], &msg, 0);
878 if (r) sysdie("sendmsg failed for new connection");
883 r= close(connecting_sockets[1]); connecting_sockets[1]= 0;
884 if (r) sysdie("connect: close child socket in parent");
886 on_fd_read_except(connecting_sockets[0], connchild_event);
890 connect_attempt_discard();
893 static void check_idle_conns(void) {
895 for (conn=LIST_HEAD(conns); conn; conn=LIST_NEXT(conn))
896 conn->since_activity++;
898 for (conn=LIST_HEAD(conns); conn; conn=LIST_NEXT(conn)) {
899 if (conn->since_activity <= need_activity_periods) continue;
901 /* We need to shut this down */
903 connfail(conn,"timed out waiting for response to QUIT");
904 else if (conn->sent.count)
905 connfail(conn,"timed out waiting for responses");
906 else if (conn->waiting.count || conn->priority.count)
907 connfail(conn,"BUG IN INNDUCT conn has queue but nothing sent");
908 else if (conn->xmitu)
909 connfail(conn,"peer has been sending responses"
910 " before receiving our commands!");
912 static const char quitcmd[]= "QUIT\r\n";
913 int todo= sizeof(quitcmd)-1;
914 const char *p= quitcmd;
916 int r= write(conn->fd, p, todo);
918 if (isewouldblock(errno))
919 connfail(conn, "blocked writing QUIT to idle connection");
921 connfail(conn, "failed to write QUIT to idle connection: %s",
929 conn->since_activity= 0;
930 debug("C%d is idle, quitting", conn->fd);
939 /*========== overall control of article flow ==========*/
941 static void check_master_queue(void) {
949 /* Find a connection to offer this article. We prefer a busy
950 * connection to an idle one, provided it's not full. We take the
951 * first (oldest) and since that's stable, it will mean we fill up
952 * connections in order. That way if we have too many
953 * connections, the spare ones will go away eventually.
955 for (walk=LIST_HEAD(conns); walk; walk=LIST_NEXT(walk)) {
956 if (walk->quitting) continue;
957 inqueue= walk->sent.count + walk->priority.count
958 + walk->waiting.count;
959 spare= walk->max_queue - inqueue;
960 assert(inqueue <= max_queue_per_conn);
962 if (inqueue==0) /*idle*/ { if (!use) use= walk; }
963 else if (spare>0) /*working*/ { use= walk; break; }
966 if (!inqueue) use->since_activity= 0; /* reset idle counter */
968 Article *art= LIST_REMHEAD(queue);
969 LIST_ADDTAIL(use->waiting, art);
972 conn_maybe_write(use);
973 } else if (allow_connect_start()) {
974 until_connect= reconnect_delay_periods;
983 static void *conn_writeable(oop_source *l, int fd, oop_event ev, void *u) {
988 static void conn_maybe_write(Conn *conn) {
991 conn_make_some_xmits(conn);
993 loop->cancel_fd(loop, conn->fd, OOP_WRITE);
997 void *rp= conn_write_some_xmits(conn);
998 if (rp==OOP_CONTINUE) {
999 loop->on_fd(loop, conn->fd, OOP_WRITE, conn_writeable, conn);
1001 } else if (rp==OOP_HALT) {
1004 /* transmitted everything */
1011 static void vconnfail(Conn *conn, const char *fmt, va_list al) {
1012 int requeue[art_MaxState];
1015 while ((art= LIST_REMHEAD(conn->priority))) LIST_ADDTAIL(queue, art);
1016 while ((art= LIST_REMHEAD(conn->waiting))) LIST_ADDTAIL(queue, art);
1017 while ((art= LIST_REMHEAD(conn->sent))) {
1018 requeue[art->state]++;
1019 if (art->state==art_Unsolicited) art->state= art_Unchecked;
1020 LIST_ADDTAIL(queue,art);
1025 for (i=0, d=conn->xmitd; i<conn->xmitu; i++, d++)
1028 char *m= xvasprintf(fmt,al);
1029 warn("C%d connection failed (requeueing " RCI_TRIPLE_FMT_BASE "): %s",
1030 conn->fd, RCI_TRIPLE_VALS_BASE(requeue, /*nothing*/), m);
1033 LIST_REMOVE(conns,conn);
1035 check_master_queue();
1038 static void connfail(Conn *conn, const char *fmt, ...) {
1041 vconnfail(conn,fmt,al);
1045 /*========== article transmission ==========*/
1047 static XmitDetails *xmit_core(Conn *conn, const char *data, int len,
1048 XmitKind kind) { /* caller must then fill in details */
1049 struct iovec *v= &conn->xmit[conn->xmitu];
1050 XmitDetails *d= &conn->xmitd[conn->xmitu++];
1051 v->iov_base= (char*)data;
1057 static void xmit_noalloc(Conn *conn, const char *data, int len) {
1058 xmit_core(conn,data,len, xk_Const);
1060 #define XMIT_LITERAL(lit) (xmit_noalloc(conn, (lit), sizeof(lit)-1))
1062 static void xmit_artbody(Conn *conn, ARTHANDLE *ah /* consumed */) {
1063 XmitDetails *d= xmit_core(conn, ah->data, ah->len, xk_Artdata);
1067 static void xmit_free(XmitDetails *d) {
1069 case xk_Malloc: free(d->info.malloc_tofree); break;
1070 case xk_Artdata: SMfreearticle(d->info.sm_art); break;
1071 case xk_Const: break;
1076 static void *conn_write_some_xmits(Conn *conn) {
1078 * 0: nothing more to write, no need to call us again
1079 * OOP_CONTINUE: more to write but fd not writeable
1080 * OOP_HALT: disaster, have destroyed conn
1083 int count= conn->xmitu;
1084 if (!count) return 0;
1086 if (count > IOV_MAX) count= IOV_MAX;
1087 ssize_t rs= writev(conn->fd, conn->xmit, count);
1089 if (isewouldblock(errno)) return OOP_CONTINUE;
1090 connfail(conn, "write failed: %s", strerror(errno));
1096 for (done=0; rs && done<conn->xmitu; done++) {
1097 struct iovec *vp= &conn->xmit[done];
1098 XmitDetails *dp= &conn->xmitd[done];
1099 if (rs > vp->iov_len) {
1107 int newu= conn->xmitu - done;
1108 memmove(conn->xmit, conn->xmit + done, newu * sizeof(*conn->xmit));
1109 memmove(conn->xmitd, conn->xmitd + done, newu * sizeof(*conn->xmitd));
1114 static void conn_make_some_xmits(Conn *conn) {
1116 if (conn->xmitu+5 > CONNIOVS)
1119 Article *art= LIST_REMHEAD(conn->priority);
1120 if (!art) art= LIST_REMHEAD(conn->waiting);
1123 if (art->state >= art_Wanted || (conn->stream && nocheck)) {
1124 /* actually send it */
1126 ARTHANDLE *artdata= SMretrieve(art->token, RETR_ALL);
1130 XMIT_LITERAL("TAKETHIS ");
1131 xmit_noalloc(conn, art->messageid, art->midlen);
1132 XMIT_LITERAL("\r\n");
1133 xmit_artbody(conn, artdata);
1136 /* we got 235 from IHAVE */
1138 xmit_artbody(conn, artdata);
1140 XMIT_LITERAL(".\r\n");
1145 art->state == art_Unchecked ? art_Unsolicited :
1146 art->state == art_Wanted ? art_Wanted :
1148 art->ipf->counts[art->state][RC_sent]++;
1149 LIST_ADDTAIL(conn->sent, art);
1155 XMIT_LITERAL("IHAVE ");
1157 XMIT_LITERAL("CHECK ");
1158 xmit_noalloc(conn, art->messageid, art->midlen);
1159 XMIT_LITERAL("\r\n");
1161 assert(art->state == art_Unchecked);
1162 art->ipf->counts[art->state][RC_sent]++;
1163 LIST_ADDTAIL(conn->sent, art);
1169 /*========== handling responses from peer ==========*/
1171 static const oop_rd_style peer_rd_style= {
1172 OOP_RD_DELIM_STRIP, '\n',
1174 OOP_RD_SHORTREC_FORBID
1177 static void *peer_rd_err(oop_source *lp, oop_read *oread, oop_event ev,
1178 const char *errmsg, int errnoval,
1179 const char *data, size_t recsz, void *conn_v) {
1181 connfail(conn, "error receiving from peer: %s", errmsg);
1182 return OOP_CONTINUE;
1185 static Article *article_reply_check(Conn *conn, const char *response,
1186 int code_indicates_streaming,
1188 /* 1:yes, -1:no, 0:dontcare */,
1189 const char *sanitised_response) {
1190 Article *art= LIST_HEAD(conn->sent);
1194 "peer gave unexpected response when no commands outstanding: %s",
1195 sanitised_response);
1199 if (code_indicates_streaming) {
1200 assert(!memchr(response, 0, 4)); /* ensured by peer_rd_ok */
1201 if (!conn->stream) {
1202 connfail(conn, "peer gave streaming response code "
1203 " to IHAVE or subsequent body: %s", sanitised_response);
1206 const char *got_mid= response+4;
1207 int got_midlen= strcspn(got_mid, " \n\r");
1208 if (got_midlen<3 || got_mid[0]!='<' || got_mid[got_midlen-1]!='>') {
1209 connfail(conn, "peer gave streaming response with syntactically invalid"
1210 " messageid: %s", sanitised_response);
1213 if (got_midlen != art->midlen ||
1214 memcmp(got_mid, art->messageid, got_midlen)) {
1215 connfail(conn, "peer gave streaming response code to wrong article -"
1216 " probable synchronisation problem; we offered: %s;"
1218 art->messageid, sanitised_response);
1223 connfail(conn, "peer gave non-streaming response code to"
1224 " CHECK/TAKETHIS: %s", sanitised_response);
1229 if (must_have_sent>0 && art->state < art_Wanted) {
1230 connfail(conn, "peer says article accepted but"
1231 " we had not sent the body: %s", sanitised_response);
1234 if (must_have_sent<0 && art->state >= art_Wanted) {
1235 connfail(conn, "peer says please sent the article but we just did: %s",
1236 sanitised_response);
1240 Article *art_again= LIST_REMHEAD(conn->sent);
1241 assert(art_again == art);
1245 static void update_nocheck(int accepted) {
1246 accept_proportion *= nocheck_decay;
1247 accept_proportion += accepted * (1.0 - nocheck_decay);
1248 int new_nocheck= accept_proportion >= nocheck_thresh;
1249 if (new_nocheck && !nocheck_reported) {
1250 notice("entering nocheck mode for the first time");
1251 nocheck_reported= 1;
1252 } else if (new_nocheck != nocheck) {
1253 debug("nocheck mode %s", new_nocheck ? "start" : "stop");
1255 nocheck= new_nocheck;
1258 static void article_done(Conn *conn, Article *art, int whichcount) {
1259 art->ipf->counts[art->state][whichcount]++;
1260 if (whichcount == RC_accepted) update_nocheck(1);
1261 else if (whichcount == RC_unwanted) update_nocheck(0);
1263 InputFile *ipf= art->ipf;
1264 while (art->blanklen) {
1265 static const char spaces[]=
1270 int w= art->blanklen; if (w >= sizeof(spaces)) w= sizeof(spaces)-1;
1271 int r= pwrite(ipf->fd, spaces, w, art->offset);
1273 if (errno==EINTR) continue;
1274 sysdie("failed to blank entry for %s (length %d at offset %lu) in %s",
1275 art->messageid, art->blanklen, art->offset, ipf->path);
1277 assert(r>=0 && r<=w);
1283 assert(ipf->inprogress >= 0);
1285 if (!ipf->inprogress && ipf != main_input_file)
1286 queue_check_input_done();
1291 static void *peer_rd_ok(oop_source *lp, oop_read *oread, oop_event ev,
1292 const char *errmsg, int errnoval,
1293 const char *data, size_t recsz, void *conn_v) {
1296 if (ev == OOP_RD_EOF) {
1297 connfail(conn, "unexpected EOF from peer");
1298 return OOP_CONTINUE;
1300 assert(ev == OOP_RD_OK);
1302 char *sani= sanitise(data);
1305 unsigned long code= strtoul(data, &ep, 10);
1306 if (ep != data+3 || *ep != ' ' || data[0]=='0') {
1307 connfail(conn, "badly formatted response from peer: %s", sani);
1308 return OOP_CONTINUE;
1311 if (conn->quitting) {
1312 if (code!=205 && code!=503) {
1313 connfail(conn, "peer gave unexpected response to QUIT: %s", sani);
1315 notice("C%d idle connection closed", conn->fd);
1316 assert(!conn->waiting.count);
1317 assert(!conn->priority.count);
1318 assert(!conn->sent.count);
1319 assert(!conn->xmitu);
1320 LIST_REMOVE(conns,conn);
1323 return OOP_CONTINUE;
1326 conn->since_activity= 0;
1329 #define GET_ARTICLE(musthavesent) \
1330 art= article_reply_check(conn, data, musthavesent, code_streaming, sani); \
1331 if (art) ; else return OOP_CONTINUE /* reply_check has failed the conn */
1333 #define ARTICLE_DEALTWITH(streaming,musthavesent,how) \
1334 code_streaming= (streaming); \
1335 GET_ARTICLE(musthavesent); \
1336 article_done(conn, art, RC_##how); break;
1338 #define PEERBADMSG(m) connfail(conn, m ": %s", sani); return OOP_CONTINUE
1340 int code_streaming= 0;
1344 case 400: PEERBADMSG("peer stopped accepting articles");
1345 case 503: PEERBADMSG("peer timed us out");
1346 default: PEERBADMSG("peer sent unexpected message");
1348 case 435: ARTICLE_DEALTWITH(0,0,unwanted); /* IHAVE says they have it */
1349 case 438: ARTICLE_DEALTWITH(1,0,unwanted); /* CHECK/TAKETHIS: they have it */
1351 case 235: ARTICLE_DEALTWITH(0,1,accepted); /* IHAVE says thanks */
1352 case 239: ARTICLE_DEALTWITH(1,1,accepted); /* TAKETHIS says thanks */
1354 case 437: ARTICLE_DEALTWITH(0,0,rejected); /* IHAVE says rejected */
1355 case 439: ARTICLE_DEALTWITH(1,0,rejected); /* TAKETHIS says rejected */
1357 case 238: /* CHECK says send it */
1359 case 335: /* IHAVE says send it */
1361 assert(art->state == art_Unchecked);
1362 art->ipf->counts[art->state][RC_accepted]++;
1363 art->state= art_Wanted;
1364 LIST_ADDTAIL(conn->priority, art);
1367 case 431: /* CHECK or TAKETHIS says try later */
1369 case 436: /* IHAVE says try later */
1372 if (fprintf(defer, "%s %s\n", TokenToText(art->token), art->messageid) <0
1374 sysfatal("write to defer file %s",path_defer);
1375 article_done(conn, art, RC_deferred);
1380 conn_maybe_write(conn);
1381 check_master_queue();
1382 return OOP_CONTINUE;
1386 /*========== monitoring of input files ==========*/
1388 static void feedfile_eof(InputFile *ipf) {
1389 assert(ipf != main_input_file); /* promised by tailing_try_read */
1391 inputfile_tailing_stop(ipf);
1392 assert(ipf->fd >= 0);
1393 if (close(ipf->fd)) sysdie("could not close input file %s", ipf->path);
1396 if (ipf == flushing_input_file) {
1397 assert(sms==sm_SEPARATED || sms==sm_DROPPING);
1398 if (main_input_file) inputfile_tailing_start(main_input_file);
1399 statemc_check_flushing_done();
1400 } else if (ipf == backlog_input_file) {
1401 statemc_check_backlog_done();
1403 abort(); /* supposed to wait rather than get EOF on main input file */
1407 static InputFile *open_input_file(const char *path) {
1408 int fd= open(path, O_RDONLY);
1410 if (errno==ENOENT) return 0;
1411 sysfatal("unable to open input file %s", path);
1414 InputFile *ipf= xmalloc(sizeof(*ipf) + strlen(path) + 1);
1415 memset(ipf,0,sizeof(*ipf));
1418 strcpy(ipf->path, path);
1423 static void close_input_file(InputFile *ipf) {
1424 assert(!ipf->readable_callback); /* must have had ->on_cancel */
1425 assert(!ipf->filemon); /* must have had inputfile_tailing_stop */
1426 assert(!ipf->rd); /* must have had inputfile_tailing_stop */
1427 assert(!ipf->inprogress); /* no dangling pointers pointing here */
1430 if (close(ipf->fd)) sysdie("could not close input file %s", ipf->path);
1434 /*---------- dealing with articles read in the input file ----------*/
1436 static void *feedfile_got_bad_data(InputFile *ipf, off_t offset,
1437 const char *data, const char *how) {
1438 warn("corrupted file: %s, offset %lu: %s: %s",
1439 ipf->path, (unsigned long)offset, how, sanitise(data));
1440 ipf->readcount_err++;
1441 if (ipf->readcount_err > max_bad_data_initial +
1442 (ipf->readcount_ok+ipf->readcount_blank) / max_bad_data_ratio)
1443 die("too much garbage in input file! (%d errs, %d ok, %d blank)",
1444 ipf->readcount_err, ipf->readcount_ok, ipf->readcount_blank);
1445 return OOP_CONTINUE;
1448 static void *feedfile_read_err(oop_source *lp, oop_read *rd,
1449 oop_rd_event ev, const char *errmsg,
1450 int errnoval, const char *data, size_t recsz,
1452 InputFile *ipf= ipf_v;
1453 assert(ev == OOP_RD_SYSTEM);
1455 sysdie("error reading input file: %s, offset %lu",
1456 ipf->path, (unsigned long)ipf->offset);
1459 static void *feedfile_got_article(oop_source *lp, oop_read *rd,
1460 oop_rd_event ev, const char *errmsg,
1461 int errnoval, const char *data, size_t recsz,
1463 InputFile *ipf= ipf_v;
1465 char tokentextbuf[sizeof(TOKEN)*2+3];
1467 if (!data) { feedfile_eof(ipf); return OOP_CONTINUE; }
1469 off_t old_offset= ipf->offset;
1470 ipf->offset += recsz + 1;
1472 #define X_BAD_DATA(m) return feedfile_got_bad_data(ipf,old_offset,data,m);
1474 if (ev==OOP_RD_PARTREC)
1475 feedfile_got_bad_data(ipf,old_offset,data,"missing final newline");
1476 /* but process it anyway */
1478 if (ipf->skippinglong) {
1479 if (ev==OOP_RD_OK) ipf->skippinglong= 0; /* fine now */
1482 if (ev==OOP_RD_LONG) {
1483 ipf->skippinglong= 1;
1484 X_BAD_DATA("overly long line");
1487 if (memchr(data,'\0',recsz)) X_BAD_DATA("nul byte");
1488 if (!recsz) X_BAD_DATA("empty line");
1491 if (strspn(data," ") != recsz) X_BAD_DATA("line partially blanked");
1492 ipf->readcount_blank++;
1493 return OOP_CONTINUE;
1496 char *space= strchr(data,' ');
1497 int tokenlen= space-data;
1498 int midlen= (int)recsz-tokenlen-1;
1499 if (midlen <= 2) X_BAD_DATA("no room for messageid");
1500 if (space[1]!='<' || space[midlen]!='>') X_BAD_DATA("invalid messageid");
1502 if (tokenlen != sizeof(TOKEN)*2+2) X_BAD_DATA("token wrong length");
1503 memcpy(tokentextbuf, data, tokenlen);
1504 tokentextbuf[tokenlen]= 0;
1505 if (!IsToken(tokentextbuf)) X_BAD_DATA("token wrong syntax");
1507 ipf->readcount_ok++;
1509 art= xmalloc(sizeof(*art) - 1 + midlen + 1);
1510 art->offset= ipf->offset;
1511 art->blanklen= recsz;
1512 art->midlen= midlen;
1513 art->state= art_Unchecked;
1514 art->ipf= ipf; ipf->inprogress++;
1515 art->token= TextToToken(tokentextbuf);
1516 strcpy(art->messageid, space+1);
1517 LIST_ADDTAIL(queue, art);
1519 if (sms==sm_NORMAL && ipf==main_input_file &&
1520 ipf->offset >= target_max_feedfile_size)
1521 statemc_start_flush("feed file size");
1523 check_master_queue();
1524 return OOP_CONTINUE;
1527 /*========== tailing input file ==========*/
1529 static void *tailing_rable_call_time(oop_source *loop, struct timeval tv,
1531 InputFile *ipf= user;
1532 return ipf->readable_callback(loop, &ipf->readable,
1533 ipf->readable_callback_user);
1536 static void tailing_on_cancel(struct oop_readable *rable) {
1537 InputFile *ipf= (void*)rable;
1539 if (ipf->filemon) filemon_stop(ipf);
1540 loop->cancel_time(loop, OOP_TIME_NOW, tailing_rable_call_time, ipf);
1541 ipf->readable_callback= 0;
1544 static void tailing_queue_readable(InputFile *ipf) {
1545 /* lifetime of ipf here is OK because destruction will cause
1546 * on_cancel which will cancel this callback */
1547 loop->on_time(loop, OOP_TIME_NOW, tailing_rable_call_time, ipf);
1550 static int tailing_on_readable(struct oop_readable *rable,
1551 oop_readable_call *cb, void *user) {
1552 InputFile *ipf= (void*)rable;
1554 tailing_on_cancel(rable);
1555 ipf->readable_callback= cb;
1556 ipf->readable_callback_user= user;
1559 tailing_queue_readable(ipf);
1563 static ssize_t tailing_try_read(struct oop_readable *rable, void *buffer,
1565 InputFile *ipf= (void*)rable;
1567 ssize_t r= read(ipf->fd, buffer, length);
1569 if (errno==EINTR) continue;
1573 if (ipf==main_input_file) {
1576 } else if (ipf==flushing_input_file) {
1578 assert(sms==sm_SEPARATED || sms==sm_DROPPING);
1579 } else if (ipf==backlog_input_file) {
1589 /*---------- filemon implemented with inotify ----------*/
1591 #if defined(HAVE_INOTIFY) && !defined(HAVE_FILEMON)
1592 #define HAVE_FILEMON
1594 #include <linux/inotify.h>
1596 static int filemon_inotify_fd;
1597 static int filemon_inotify_wdmax;
1598 static InputFile **filemon_inotify_wd2ipf;
1600 struct Filemon_Perfile {
1604 static void filemon_method_startfile(InputFile *ipf, Filemon_Perfile *pf) {
1605 int wd= inotify_add_watch(filemon_inotify_fd, ipf->path, IN_MODIFY);
1606 if (wd < 0) sysdie("inotify_add_watch %s", ipf->path);
1608 if (wd >= filemon_inotify_wdmax) {
1610 filemon_inotify_wd= xrealloc(filemon_inotify_wd2ipf,
1611 sizeof(*filemon_inotify_wd2ipf) * newmax);
1612 memset(filemon_inotify_wd2ipf + filemon_inotify_wdmax, 0,
1613 sizeof(*filemon_inotify_wd2ipf) * (newmax - filemon_inotify_wdmax));
1614 filemon_inotify_wdmax= newmax;
1617 assert(!filemon_inotify_wd2ipf[wd]);
1618 filemon_inotify_wd2ipf[wd]= ipf;
1620 debug("filemon inotify startfile %p wd=%d wdmax=%d",
1621 ipf, wd, filemon_inotify_wdmax);
1626 static void filemon_method_stopfile(InputFile *ipf, Filemon_Perfile *pf) {
1628 debug("filemon inotify stopfile %p wd=%d", ipf, wd);
1629 int r= inotify_rm_watch(filemon_inotify_fd, filemon_inotify_wd);
1630 if (r) sysdie("inotify_rm_watch");
1631 filemon_inotify_wd2ipf[wd]= 0;
1634 static void *filemon_inotify_readable(oop_source *lp, int fd,
1635 oop_event e, void *u) {
1636 struct inotify_event iev;
1638 int r= read(filemon_inotify_fd, &iev, sizeof(iev));
1640 if (isewouldblock(errno)) break;
1641 sysdie("read from inotify master");
1642 } else if (r==sizeof(iev)) {
1643 assert(iev.wd >= 0 && iev.wd < filemon_inotify_wdmax);
1645 die("inotify read %d bytes wanted struct of %d", r, (int)sizeof(iev));
1647 InputFile *ipf= filemon_inotify_wd2ipf[iev.wd];
1648 debug("filemon inotify readable read %p wd=%p", iev.wd, ipf);
1649 filemon_callback(ipf);
1651 return OOP_CONTINUE;
1654 static int filemon_method_init(void) {
1655 filemon_inotify_fd= inotify_init();
1656 if (filemon_inotify_fd<0) {
1657 syswarn("could not initialise inotify: inotify_init failed");
1661 loop->on_fd(loop, filemon_inotify_fd, OOP_READ, filemon_inotify_readable);
1663 debug("filemon inotify init filemon_inotify_fd=%d", filemon_inotify_fd);
1667 #endif /* HAVE_INOTIFY && !HAVE_FILEMON */
1669 /*---------- filemon dummy implementation ----------*/
1671 #if !defined(HAVE_FILEMON)
1673 struct Filemon_Perfile { int dummy; };
1675 static int filemon_method_init(void) { return 0; }
1676 static void filemon_method_startfile(InputFile *ipf, Filemon_Perfile *pf) { }
1677 static void filemon_method_stopfile(InputFile *ipf, Filemon_Perfile *pf) { }
1679 #endif /* !HAVE_FILEMON */
1681 /*---------- filemon generic interface ----------*/
1683 static void filemon_start(InputFile *ipf) {
1684 assert(!ipf->filemon);
1686 ipf->filemon= xmalloc(sizeof(*ipf->filemon));
1687 memset(ipf->filemon, 0, sizeof(*ipf->filemon));
1688 filemon_method_startfile(ipf, ipf->filemon);
1691 static void filemon_stop(InputFile *ipf) {
1692 if (!ipf->filemon) return;
1693 filemon_method_stopfile(ipf, ipf->filemon);
1698 static void filemon_callback(InputFile *ipf) {
1699 ipf->readable_callback(loop, &ipf->readable, ipf->readable_callback_user);
1702 /*---------- interface to start and stop an input file ----------*/
1704 static const oop_rd_style feedfile_rdstyle= {
1705 OOP_RD_DELIM_STRIP, '\n',
1707 OOP_RD_SHORTREC_LONG,
1710 static void inputfile_tailing_start(InputFile *ipf) {
1712 ipf->readable.on_readable= tailing_on_readable;
1713 ipf->readable.on_cancel= tailing_on_cancel;
1714 ipf->readable.try_read= tailing_try_read;
1715 ipf->readable.delete_tidy= 0; /* we never call oop_rd_delete_{tidy,kill} */
1716 ipf->readable.delete_kill= 0;
1718 ipf->readable_callback= 0;
1719 ipf->readable_callback_user= 0;
1721 ipf->rd= oop_rd_new(loop, &ipf->readable, 0,0);
1724 int r= oop_rd_read(ipf->rd, &feedfile_rdstyle, MAX_LINE_FEEDFILE,
1725 feedfile_got_article,ipf, feedfile_read_err, ipf);
1726 if (r) sysdie("unable start reading feedfile %s",ipf->path);
1729 static void inputfile_tailing_stop(InputFile *ipf) {
1731 oop_rd_cancel(ipf->rd);
1732 oop_rd_delete(ipf->rd);
1734 assert(!ipf->filemon); /* we shouldn't be monitoring it now */
1738 /*========== interaction with innd - state machine ==========*/
1740 /* See official state diagram at top of file. We implement
1751 |`---------------------------------------------------.
1753 |`---------------- - - - |
1754 D ENOENT | D EXISTS see OVERALL STATES diagram |
1755 | for full startup logic |
1758 | ============ try to |
1764 | | F IS SO BIG WE SHOULD FLUSH, OR TIMEOUT |
1765 ^ | hardlink F to D |
1768 | | our handle onto F is now onto D |
1771 | |<-------------------<---------------------<---------+
1773 | | spawn inndcomm flush |
1775 | ================== |
1776 | FLUSHING[-ABSENT] |
1778 | main D tail/none |
1779 | ================== |
1781 | | INNDCOMM FLUSH FAILS ^
1782 | |`----------------------->----------. |
1784 | | NO SUCH SITE V |
1785 ^ |`--------------->----. ==================== |
1786 | | \ FLUSHFAILED[-ABSENT] |
1788 | | FLUSH OK \ main D tail/none |
1789 | | open F \ ==================== |
1791 | | \ | TIME TO RETRY |
1792 | |`------->----. ,---<---'\ `----------------'
1793 | | D NONE | | D NONE `----.
1795 | ============= V V ============
1796 | SEPARATED-1 | | DROPPING-1
1797 | flsh->fd>=0 | | flsh->fd>=0
1798 | [Separated] | | [Dropping]
1799 | main F idle | | main none
1800 | old D tail | | old D tail
1801 | ============= | | ============
1803 ^ | EOF ON D | | defer | EOF ON D
1805 | =============== | | ===============
1806 | SEPARATED-2 | | DROPPING-2
1807 | flsh->fd==-1 | V flsh->fd==-1
1808 | [Finishing] | | [Dropping]
1809 | main F tail | `. main none
1810 | old D closed | `. old D closed
1811 | =============== V `. ===============
1813 | | ALL D PROCESSED `. | ALL D PROCESSED
1814 | V install defer as backlog `. | install defer
1815 ^ | close D `. | close D
1816 | | unlink D `. | unlink D
1819 `----------' ==============
1839 static void startup_set_input_file(InputFile *f) {
1840 assert(!main_input_file);
1842 inputfile_tailing_start(f);
1845 static void statemc_init(void) {
1846 struct stat stab, stabf;
1848 path_lock= xasprintf("%s_lock", feedfile);
1849 path_flushing= xasprintf("%s_flushing", feedfile);
1850 path_defer= xasprintf("%s_defer", feedfile);
1851 globpat_backlog= xasprintf("%s_backlog*", feedfile);
1854 int lockfd= open(path_lock, O_CREAT|O_RDWR, 0600);
1855 if (lockfd<0) sysfatal("open lockfile %s", path_lock);
1858 memset(&fl,0,sizeof(fl));
1860 fl.l_whence= SEEK_SET;
1861 int r= fcntl(lockfd, F_SETLK, &fl);
1863 if (errno==EACCES || isewouldblock(errno)) {
1864 if (quiet_multiple) exit(0);
1865 fatal("another duct holds the lockfile");
1867 sysdie("fcntl F_SETLK lockfile %s", path_lock);
1870 xfstat_isreg(lockfd, &stabf, path_lock, "lockfile");
1872 xlstat_isreg(path_lock, &stab, &lock_noent, "lockfile");
1874 if (!lock_noent && samefile(&stab, &stabf))
1878 sysdie("could not close stale lockfile %s", path_lock);
1880 debug("startup: locked");
1882 search_backlog_file();
1885 xlstat_isreg(path_defer, &stab, &defer_noent, "defer file");
1887 debug("startup: ductdefer ENOENT");
1889 debug("startup: ductdefer nlink=%ld", (long)stab.st_nlink);
1890 switch (stab.st_nlink==1) {
1892 open_defer(); /* so that we will later close it and rename it */
1895 xunlink(path_defer, "stale defer file link"
1896 " (presumably hardlink to backlog file)");
1899 die("defer file %s has unexpected link count %d",
1900 path_defer, stab.st_nlink);
1904 struct stat stab_f, stab_d;
1907 InputFile *file_d= open_input_file(path_flushing);
1908 if (file_d) xfstat_isreg(file_d->fd, &stab_d, path_flushing,"flushing file");
1910 xlstat_isreg(feedfile, &stab_f, &noent_f, "feedfile");
1912 if (!noent_f && file_d && samefile(&stab_f, &stab_d)) {
1913 debug("startup: F==D => Hardlinked");
1914 xunlink(feedfile, "feed file (during startup)"); /* => Moved */
1919 debug("startup: F ENOENT => Moved");
1920 if (file_d) startup_set_input_file(file_d);
1921 spawn_inndcomm_flush("feedfile missing at startup");
1922 /* => Flushing, sms:=FLUSHING */
1925 debug("startup: F!=D => Separated");
1926 startup_set_input_file(file_d);
1927 SMS(SEPARATED, 0, "found both old and current feed files");
1929 debug("startup: F exists, D ENOENT => Normal");
1930 InputFile *file_f= open_input_file(feedfile);
1931 if (!file_f) die("feed file vanished during startup");
1932 startup_set_input_file(file_f);
1933 SMS(NORMAL, flushfail_retry_periods, "normal startup");
1938 static void statemc_start_flush(const char *why) { /* Normal => Flushing */
1939 assert(sms == sm_NORMAL);
1941 debug("starting flush (%s) (%lu >?= %lu) (%d)",
1943 (unsigned long)(main_input_file ? main_input_file->offset : 0),
1944 (unsigned long)target_max_feedfile_size,
1947 int r= link(feedfile, path_flushing);
1948 if (r) sysdie("link feedfile %s to flushing file %s",
1949 feedfile, path_flushing);
1952 xunlink(feedfile, "old feedfile link");
1955 spawn_inndcomm_flush(why); /* => Flushing FLUSHING */
1958 static void statemc_period_poll(void) {
1959 if (!sm_period_counter) return;
1960 sm_period_counter--;
1961 assert(sm_period_counter>=0);
1963 if (sm_period_counter) return;
1966 statemc_start_flush("periodic"); /* Normal => Flushing; => FLUSHING */
1968 case sm_FLUSHFAILED:
1969 spawn_inndcomm_flush("retry"); /* Moved => Flushing; => FLUSHING */
1976 static int inputfile_is_done(InputFile *ipf) {
1978 if (ipf->inprogress) return 0; /* new article in the meantime */
1979 if (ipf->fd >= 0); return 0; /* not had EOF */
1983 static void notice_processed(InputFile *ipf, const char *what,
1985 #define RCI_NOTHING(x) /* nothing */
1986 #define RCI_TRIPLE_FMT(x) " " #x "=" RCI_TRIPLE_FMT_BASE
1987 #define RCI_TRIPLE_VALS(x) , RCI_TRIPLE_VALS_BASE(ipf->counts, [RC_##x])
1989 #define CNT(art,rc) (ipf->counts[art_##art][RC_##rc])
1991 info("processed %s%s read=%d(+%dbl,+%derr)"
1992 " offered=%d(ch%d,nc%d) accepted=%d(ch%d+nc%d)"
1993 RESULT_COUNTS(RCI_NOTHING, RCI_TRIPLE_FMT)
1996 ipf->readcount_ok, ipf->readcount_blank, ipf->readcount_err,
1997 CNT(Unchecked,sent) + CNT(Unsolicited,sent)
1998 , CNT(Unchecked,sent), CNT(Unsolicited,sent),
1999 CNT(Wanted,accepted) + CNT(Unsolicited,accepted)
2000 , CNT(Wanted,accepted), CNT(Unsolicited,accepted)
2001 RESULT_COUNTS(RCI_NOTHING, RCI_TRIPLE_VALS)
2007 static void statemc_check_backlog_done(void) {
2008 InputFile *ipf= backlog_input_file;
2009 if (!inputfile_is_done(ipf)) return;
2011 const char *slash= strrchr(ipf->path, '/');
2012 const char *leaf= slash ? slash+1 : ipf->path;
2013 const char *under= strchr(slash, '_');
2014 const char *rest= under ? under+1 : leaf;
2015 if (!strncmp(rest,"backlog",7)) rest += 7;
2016 notice_processed(ipf,"backlog:",rest);
2018 close_input_file(ipf);
2019 if (unlink(ipf->path)) {
2020 if (errno != ENOENT)
2021 sysdie("could not unlink processed backlog file %s", ipf->path);
2022 warn("backlog file %s vanished while we were reading it"
2023 " so we couldn't remove it (but it's done now, anyway)",
2027 backlog_input_file= 0;
2028 search_backlog_file();
2032 static void statemc_check_flushing_done(void) {
2033 InputFile *ipf= flushing_input_file;
2034 if (!inputfile_is_done(ipf)) return;
2036 assert(sms==sm_SEPARATED || sms==sm_DROPPING);
2038 notice_processed(ipf,"feedfile",0);
2042 xunlink(path_flushing, "old flushing file");
2044 close_input_file(flushing_input_file);
2045 free(flushing_input_file);
2046 flushing_input_file= 0;
2048 if (sms==sm_SEPARATED) {
2049 notice("flush complete");
2050 SMS(NORMAL, 0, "flush complete");
2051 } else if (sms==sm_DROPPING) {
2052 SMS(DROPPED, 0, "old flush complete");
2053 search_backlog_file();
2054 notice("feed dropped, but will continue until backlog is finished");
2058 static void *statemc_check_input_done(oop_source *lp, struct timeval now,
2060 assert(!inputfile_is_done(main_input_file));
2061 statemc_check_flushing_done();
2062 statemc_check_backlog_done();
2063 return OOP_CONTINUE;
2066 static void queue_check_input_done(void) {
2067 loop->on_time(loop, OOP_TIME_NOW, statemc_check_input_done, 0);
2070 static void statemc_setstate(StateMachineState newsms, int periods,
2071 const char *forlog, const char *why) {
2073 sm_period_counter= periods;
2075 const char *xtra= "";
2077 case sm_FLUSHING: sm_FLUSHFAILED:
2078 if (!main_input_file) xtra= "-ABSENT";
2080 case sm_SEPARATED: case sm_DROPPING:
2081 xtra= flushing_input_file->fd >= 0 ? "-1" : "-2";
2087 info("%s%s[%d] %s",forlog,xtra,periods,why);
2089 info("%s%s %s",forlog,xtra,why);
2093 /*---------- defer and backlog files ----------*/
2095 static void open_defer(void) {
2100 defer= fopen(path_defer, "a+");
2101 if (!defer) sysfatal("could not open defer file %s", path_defer);
2103 /* truncate away any half-written records */
2105 xfstat_isreg(fileno(defer), &stab, path_defer, "newly opened defer file");
2107 if (stab.st_size > LONG_MAX)
2108 die("defer file %s size is far too large", path_defer);
2113 long orgsize= stab.st_size;
2114 long truncto= stab.st_size;
2116 if (!truncto) break; /* was only (if anything) one half-truncated record */
2117 if (fseek(defer, truncto-1, SEEK_SET) < 0)
2118 sysdie("seek in defer file %s while truncating partial", path_defer);
2123 sysdie("failed read from defer file %s", path_defer);
2125 die("defer file %s shrank while we were checking it!", path_defer);
2131 if (stab.st_size != truncto) {
2132 warn("truncating half-record at end of defer file %s -"
2133 " shrinking by %ld bytes from %ld to %ld",
2134 path_defer, orgsize - truncto, orgsize, truncto);
2137 sysfatal("could not flush defer file %s", path_defer);
2138 if (ftruncate(fileno(defer), truncto))
2139 sysdie("could not truncate defer file %s", path_defer);
2142 info("continuing existing defer file %s (%ld bytes)",
2143 path_defer, orgsize);
2145 if (fseek(defer, truncto, SEEK_SET))
2146 sysdie("could not seek to new end of defer file %s", path_defer);
2149 static void close_defer(void) {
2154 xfstat_isreg(fileno(defer), &stab, path_defer, "defer file");
2156 if (fclose(defer)) sysfatal("could not close defer file %s", path_defer);
2159 time_t now= xtime();
2161 char *backlog= xasprintf("%s_backlog_%lu.%lu", feedfile,
2163 (unsigned long)stab.st_ino);
2164 if (link(path_defer, backlog))
2165 sysfatal("could not install defer file %s as backlog file %s",
2166 path_defer, backlog);
2167 if (unlink(path_defer))
2168 sysdie("could not unlink old defer link %s to backlog file %s",
2169 path_defer, backlog);
2173 if (until_backlog_nextscan < 0 ||
2174 until_backlog_nextscan > backlog_retry_minperiods + 1)
2175 until_backlog_nextscan= backlog_retry_minperiods + 1;
2178 static void poll_backlog_file(void) {
2179 if (until_backlog_nextscan < 0) return;
2180 if (until_backlog_nextscan-- > 0) return;
2181 search_backlog_file();
2184 static void search_backlog_file(void) {
2185 /* returns non-0 iff there are any backlog files */
2190 const char *oldest_path=0;
2191 time_t oldest_mtime, now;
2193 if (backlog_input_file) return;
2197 r= glob(globpat_backlog, GLOB_ERR|GLOB_MARK|GLOB_NOSORT, 0, &gl);
2201 sysdie("failed to expand backlog pattern %s", globpat_backlog);
2203 die("out of memory expanding backlog pattern %s", globpat_backlog);
2205 for (i=0; i<gl.gl_pathc; i++) {
2206 const char *path= gl.gl_pathv[i];
2208 if (strchr(path,'#') || strchr(path,'~')) {
2209 debug("backlog file search skipping %s", path);
2212 r= stat(path, &stab);
2214 syswarn("failed to stat backlog file %s", path);
2217 if (!S_ISREG(stab.st_mode)) {
2218 warn("backlog file %s is not a plain file (or link to one)", path);
2221 if (!oldest_path || stab.st_mtime < oldest_mtime) {
2223 oldest_mtime= stab.st_mtime;
2226 case GLOB_NOMATCH: /* fall through */
2229 sysdie("glob expansion of backlog pattern %s gave unexpected"
2230 " nonzero (error?) return value %d", globpat_backlog, r);
2236 debug("backlog scan: none");
2238 if (sms==sm_DROPPED) {
2239 notice("feed dropped and our work is complete");
2240 xunlink(path_lock, "lockfile for old feed");
2243 until_backlog_nextscan= backlog_spontaneous_rescan_periods;
2248 double age= difftime(now, oldest_mtime);
2249 long age_deficiency= (backlog_retry_minperiods * period_seconds) - age;
2251 if (age_deficiency <= 0) {
2252 debug("backlog scan: found age=%f deficiency=%ld oldest=%s",
2253 age, age_deficiency, oldest_path);
2255 backlog_input_file= open_input_file(oldest_path);
2256 if (!backlog_input_file) {
2257 warn("backlog file %s vanished as we opened it", backlog_input_file);
2260 inputfile_tailing_start(backlog_input_file);
2261 until_backlog_nextscan= -1;
2265 until_backlog_nextscan= age_deficiency / period_seconds;
2267 if (backlog_spontaneous_rescan_periods >= 0 &&
2268 until_backlog_nextscan > backlog_spontaneous_rescan_periods)
2269 until_backlog_nextscan= backlog_spontaneous_rescan_periods;
2271 debug("backlog scan: young age=%f deficiency=%ld nextscan=%d oldest=%s",
2272 age, age_deficiency, until_backlog_nextscan, oldest_path);
2276 /*========== flushing the feed ==========*/
2278 static pid_t inndcomm_child;
2280 static void *inndcomm_event(oop_source *lp, int fd, oop_event e, void *u) {
2281 assert(inndcomm_child);
2282 int status= xwaitpid(&inndcomm_child, "inndcomm");
2283 cancel_fd_read_except(fd);
2286 assert(!flushing_input_file);
2288 if (WIFEXITED(status)) {
2289 switch (WEXITSTATUS(status)) {
2291 case INNDCOMMCHILD_ESTATUS_FAIL:
2294 case INNDCOMMCHILD_ESTATUS_NONESUCH:
2295 warn("feed has been dropped by innd, finishing up");
2296 flushing_input_file= main_input_file;
2297 tailing_queue_readable(flushing_input_file);
2298 /* we probably previously returned EAGAIN from our fake read method
2299 * when in fact we were at EOF, so signal another readable event
2300 * so we actually see the EOF */
2304 if (flushing_input_file) {
2305 SMS(DROPPING, 0, "feed dropped by innd, but must finish last flush");
2308 SMS(DROPPED, 0, "feed dropped by innd");
2309 search_backlog_file();
2311 return OOP_CONTINUE;
2315 flushing_input_file= main_input_file;
2316 tailing_queue_readable(flushing_input_file);
2318 main_input_file= open_input_file(feedfile);
2319 if (!main_input_file)
2320 die("flush succeeded but feedfile %s does not exist!", feedfile);
2322 if (flushing_input_file) {
2323 SMS(SEPARATED, spontaneous_flush_periods, "recovery flush complete");
2326 SMS(NORMAL, spontaneous_flush_periods, "flush complete");
2328 return OOP_CONTINUE;
2331 goto unexpected_exitstatus;
2334 } else if (WIFSIGNALED(status) && WTERMSIG(status) == SIGALRM) {
2335 warn("flush timed out trying to talk to innd");
2338 unexpected_exitstatus:
2339 report_child_status("inndcomm child", status);
2343 SMS(FLUSHFAILED, flushfail_retry_periods, "flush failed, will retry");
2346 static void inndcommfail(const char *what) {
2347 syswarn("error communicating with innd: %s failed: %s", what, ICCfailure);
2348 exit(INNDCOMMCHILD_ESTATUS_FAIL);
2351 void spawn_inndcomm_flush(const char *why) { /* Moved => Flushing */
2354 notice("flushing %s",why);
2356 assert(sms==sm_NORMAL || sms==sm_FLUSHFAILED);
2357 assert(!inndcomm_child);
2359 if (pipe(pipefds)) sysdie("create pipe for inndcomm child sentinel");
2361 inndcomm_child= xfork("inndcomm child");
2363 if (!inndcomm_child) {
2364 const char *flushargv[2]= { sitename, 0 };
2370 alarm(inndcomm_flush_timeout);
2371 r= ICCopen(); if (r) inndcommfail("connect");
2372 r= ICCcommand('f',flushargv,&reply); if (r<0) inndcommfail("transmit");
2373 if (!r) exit(0); /* yay! */
2375 if (!strcmp(reply, "1 No such site")) exit(INNDCOMMCHILD_ESTATUS_NONESUCH);
2376 syswarn("innd ctlinnd flush failed: innd said %s", reply);
2377 exit(INNDCOMMCHILD_ESTATUS_FAIL);
2381 int sentinel_fd= pipefds[0];
2382 on_fd_read_except(sentinel_fd, inndcomm_event);
2384 SMS(FLUSHING, 0, why);
2387 /*========== main program ==========*/
2389 static void postfork_inputfile(InputFile *ipf) {
2391 assert(ipf->fd >= 0);
2396 static void postfork_stdio(FILE *f) {
2397 /* we have no stdio streams that are buffered long-term */
2401 static void postfork(const char *what) {
2402 if (signal(SIGPIPE, SIG_DFL) == SIG_ERR)
2403 sysdie("%s child: failed to reset SIGPIPE");
2405 postfork_inputfile(main_input_file);
2406 postfork_inputfile(flushing_input_file);
2409 for (conn=LIST_HEAD(conns); conn; conn=LIST_NEXT(conn))
2412 postfork_stdio(defer);
2415 #define EVERY(what, interval_sec, interval_usec, body) \
2416 static struct timeval what##_timeout = { interval_sec, interval_usec }; \
2417 static void what##_schedule(void); \
2418 static void *what##_timedout(oop_source *lp, struct timeval tv, void *u) { \
2420 what##_schedule(); \
2422 static void what##_schedule(void) { \
2423 loop->on_time(loop, what##_timeout, what##_timedout, 0); \
2426 EVERY(filepoll, 5,0, {
2427 if (main_input_file && main_input_file->readable_callback)
2428 filemon_callback(main_input_file);
2431 #define DEBUGF_IPF(wh) " " #wh "=%p/%s:ip=%ld,off=%ld,fd=%d%s"
2432 #define DEBUG_IPF(wh) \
2433 wh##_input_file, debug_ipf_path(wh##_input_file), \
2434 wh##_input_file->inprogress, (long)wh##_input_file->offset, \
2435 wh##_input_file->fd, wh##_input_file->rd ? "+" : ""
2436 static const char *debug_ipf_path(InputFile *ipf) {
2437 char *slash= strrchr(ipf->path,'/');
2438 return slash ? slash+1 : ipf->path;
2441 EVERY(period, -1,0, {
2443 " sms=%s[%d] conns=%d queue=%d until_connect=%d"
2444 " input_files" DEBUGF_IPF(main) DEBUGF_IPF(old) DEBUGF_IPF(flushing)
2445 " children connecting=%ld inndcomm_child"
2447 sms_names[sms], sm_period_counter,
2448 queue.count, conns.count, until_connect,
2449 DEBUG_IPF(main), DEBUG_IPF(flushing), DEBUG_IPF(flushing),
2450 (long)connecting_child, (long)inndcomm_child
2453 if (until_connect) until_connect--;
2455 poll_backlog_file();
2456 if (!backlog_input_file) close_defer(); /* want to start on a new backlog */
2457 statemc_period_poll();
2458 check_master_queue();
2463 /*========== option parsing ==========*/
2465 /*---------- generic option parser and logging ----------*/
2467 static void vbadusage(const char *fmt, va_list al) NORET_PRINTF(1,0);
2468 static void vbadusage(const char *fmt, va_list al) {
2471 static void badusage(const char *fmt, ...) NORET_PRINTF(1,2);
2472 static void badusage(const char *fmt, ...) {
2479 of_seconds= 001000u,
2480 of_boolean= 002000u,
2483 typedef struct Option Option;
2484 typedef void OptionParser(const Option*, const char *val);
2494 /*---------- specific option types ----------*/
2496 static void op_integer(const Option *o, const char *val) {
2499 unsigned long ul= strtoul(val,&ep,10);
2500 if (*ep || ep==val || errno || ul>INT_MAX)
2501 badusage("bad integer value for %s",o->lng);
2502 int *store= o->store;
2506 static void op_double(const Option *o, const char *val) {
2507 int *store= o->store;
2510 *store= strtod(val, &ep);
2511 if (*ep || ep==val || errno)
2512 badusage("bad floating point value for %s",o->lng);
2515 static void op_string(const Option *o, const char *val) {
2516 const char **store= o->store;
2520 static void op_seconds(const Option *o, const char *val) {
2521 int *store= o->store;
2525 double v= strtod(val,&ep);
2526 if (ep==val) badusage("bad time/duration value for %s",o->lng);
2528 if (!*ep || !strcmp(ep,"s")) unit= 1;
2529 else if (!strcmp(ep,"m")) unit= 60;
2530 else if (!strcmp(ep,"h")) unit= 3600;
2531 else if (!strcmp(ep,"d")) unit= 86400;
2532 else badusage("bad units %s for time/duration value for %s",ep,o->lng);
2536 if (v > INT_MAX) badusage("time/duration value for %s out of range",o->lng);
2540 static void op_periods_rndup(const Option *o, const char *val) {
2541 int *store= o->store;
2543 *store += period_seconds-1;
2544 *store /= period_seconds;
2547 static void op_setint(const Option *o, const char *val) {
2548 int *store= o->store;
2552 /*---------- specific options ----------*/
2554 static const Option options[]= {
2555 {'f',"feedfile", &feedfile, op_string },
2556 {'q',"quiet-multiple", &quiet_multiple, op_setint, 1,1 },
2558 { 0, "max-connections", &max_connections, op_integer },
2559 { 0, "max-queue-per-conn", &max_queue_per_conn, op_integer },
2562 { 0, "streaming", &try_stream, op_setint, 1,1 },
2563 { 0, "no-streaming", &try_stream, op_setint, 1,0 },
2564 {'P',"port", &port, op_integer },
2565 { 0, "inndconf", &inndconffile, op_string },
2566 {'d',"daemon", &become_daemon, op_setint, 1,1 },
2567 { 0, "no-daemon", &become_daemon, op_setint, 1,0 },
2569 { 0, "no-check-proportion", &nocheck_thresh_pct, op_double },
2570 { 0, "no-check-filter", &nocheck_decay_articles, op_double },
2572 { 0, "reconnect-interval", &reconnect_delay_periods, op_periods_rndup },
2573 { 0, "flush-retry-interval", &flushfail_retry_periods, op_periods_rndup },
2574 { 0, "inndcomm-timeout", &inndcomm_flush_timeout, op_seconds },
2577 int main(int argc, char **argv) {
2583 if (*arg != '-') break;
2584 if (!strcmp(arg,"--")) { arg= *++argv; break; }
2586 while ((a= *++arg)) {
2590 char *equals= strchr(arg,'=');
2591 int len= equals ? (equals - arg) : strlen(arg);
2592 for (o=options; o->lng; o++)
2593 if (strlen(o->lng) == len && !memcmp(o->lng,arg,len))
2595 badusage("unknown long option --%s",arg);
2598 if (equals) badusage("option --%s does not take a value",o->lng);
2600 } else if (equals) {
2604 if (!arg) badusage("option --%s needs a value",o->lng);
2607 break; /* eaten the whole argument now */
2609 for (o=options; o->lng; o++)
2612 badusage("unknown short option -%c",a);
2619 if (!arg) badusage("option -%c needs a value",o->shrt);
2622 break; /* eaten the whole argument now */
2627 if (!arg) badusage("need site name argument");
2633 if (*++argv) badusage("too many non-option arguments");
2635 if (nocheck_thresh_pct < 0 || nocheck_thresh_pct > 100)
2636 badusage("nocheck threshold percentage must be between 0..100");
2637 nocheck_thresh= nocheck_thresh_pct * 0.01;
2639 if (nocheck_decay_articles < 0.1)
2640 badusage("nocheck decay articles must be at least 0.1");
2641 nocheck_decay= 1 - 1/nocheck_decay_articles;
2644 pathoutgoing= innconf->pathoutgoing;
2645 innconf_read(inndconffile);
2648 feedfile= xasprintf("%s/%s",pathoutgoing,sitename);
2649 else if (!feedfile[0])
2650 badusage("feed filename must be nonempty");
2651 else if (feedfile[strlen(feedfile)-1]=='/')
2652 feedfile= xasprintf("%s%s",feedfile,sitename);
2654 const char *feedfile_forbidden= "?*[~#";
2656 while ((c= *feedfile_forbidden++))
2657 if (strchr(feedfile, c))
2658 badusage("feed filename may not contain metacharacter %c",c);
2660 oop_source_sys *sysloop= oop_sys_new();
2661 if (!sysloop) sysdie("could not create liboop event loop");
2662 loop= (oop_source*)sysloop;
2664 if (signal(SIGPIPE, SIG_IGN) == SIG_ERR)
2665 sysdie("could not ignore SIGPIPE");
2667 if (become_daemon) {
2669 for (i=3; i<255; i++)
2670 /* do this now before we open syslog, etc. */
2672 openlog("innduct",LOG_NDELAY|LOG_PID,LOG_NEWS);
2674 int null= open("/dev/null",O_RDWR);
2675 if (null<0) sysdie("failed to open /dev/null");
2681 pid_t child1= xfork("daemonise first fork");
2682 if (child1) _exit(0);
2684 pid_t sid= setsid();
2685 if (sid != child1) sysdie("setsid failed");
2687 pid_t child2= xfork("daemonise second fork");
2688 if (child2) _exit(0);
2693 if (!filemon_method_init()) {
2694 warn("no file monitoring available, polling");
2695 filepoll_schedule();
2698 period_timeout.tv_sec= period_seconds;
2703 void *r= oop_sys_run(sysloop);
2704 assert(r == OOP_ERROR);
2705 sysdie("event loop failed");