3 * - rename defraise to raise_default
4 * - xmalloc + memset -> xcalloc
5 * - macro for conn iteration
6 * - skipping_long offset calculation is wrong
7 * - reset signals TERM and INT (and HUP) in children
9 * - manpage: document control master stuff
10 * - admin-initiated flush
13 * build-lfs/backends/innduct --no-daemon -C ../inn.conf -f `pwd`/fee sit localhost
17 * Newsfeeds file entries should look like this:
18 * host.name.of.site[/exclude,exclude,...]\
19 * :pattern,pattern...[/distribution,distribution...]\
23 * sitename[/exclude,exclude,...]\
24 * :pattern,pattern...[/distribution,distribution...]\
30 * or might be blanked out
31 * <spc><spc><spc><spc>....
33 * F site.name main feed file
34 * opened/created, then written, by innd
37 * tokens blanked out by duct when processed
38 * site.name_lock lock preventing multiple ducts
39 * to hold lock must open,F_SETLK[W]
40 * and then stat to check that locked file
41 * still has name site.name_lock
42 * holder of this lock is "duct"
43 * (only) lockholder may remove the lockfile
44 * D site.name_flushing temporary feed file during flush (or crash)
45 * hardlink created by duct
47 * site.name_defer 431'd articles, still being written,
48 * created, written, used by duct
50 * site.name_backlog.<date>.<inum>
51 * 431'd articles, ready for innxmit or duct
52 * created (link/mv) by duct
53 * site.name_backlog<anything-else> (where <anything-else> does not
54 * contain '#' or '~') eg
55 * site.name_backlog.manual
56 * anything the sysadmin likes (eg, feed files
57 * from old feeds to be merged into this one)
58 * created (link/mv) by admin
59 * may be symlinks (in which case links
60 * may be written through, but only links
63 * It is safe to remove backlog files manually,
64 * if it's desired to throw away the backlog.
66 * Backlog files are also processed by innduct. We find the oldest
67 * backlog file which is at least a certain amount old, and feed it
68 * back into our processing. When every article in it has been read
69 * and processed, we unlink it and look for another backlog file.
71 * If we don't have a backlog file that we're reading, we close the
72 * defer file that we're writing and make it into a backlog file at
73 * the first convenient opportunity.
84 | | <----------------<---------------------------------'|
90 | F: innd writing, duct reading |
93 | | duct decides time to flush |
94 | | duct makes hardlink |
96 | V <------------------------'|
98 | F == D: innd writing, duct reading both exist |
101 | | <-----------<-------------<--'|
102 | | open D F ENOENT |
105 | V <---------------------. |
108 | D: innd writing, duct reading; or ENOENT | |
110 | | duct requests flush of feed | |
111 | | (others can too, harmlessly) | |
115 | D: innd flushing, duct; or ENOENT | |
117 | | inndcomm flush fails | |
118 | |`-------------------------->------------------' |
120 | | inndcomm reports no such site |
121 | |`---------------------------------------------------- | -.
123 | | innd finishes writing D, creates F | |
124 | | inndcomm reports flush successful | |
127 | Separated <----------------' |
128 | F: innd writing F!=D /
129 | D: duct reading; or ENOENT both exist /
131 | | duct gets to the end of D /
132 | | duct opens F too /
135 | F: innd writing, duct reading |
136 | D: duct finishing V
138 | | duct finishes processing D F: ENOENT
139 | V duct unlinks D D: duct reading
141 `--<--' | duct finishes
151 "duct reading" means innduct is reading the file but also
152 overwriting processed tokens.
156 * rune for printing diagrams:
158 perl -ne 'print if m/-8\<-/..m/-\>8-/; print "\f" if m/-\^L-/' backends/innduct.c |a2ps -R -B -ops
163 /*============================== PROGRAM ==============================*/
165 #define _GNU_SOURCE 1
171 #include "inndcomm.h"
173 #include "inn/list.h"
174 #include "inn/innconf.h"
177 #include <sys/types.h>
178 #include <sys/wait.h>
179 #include <sys/stat.h>
180 #include <sys/socket.h>
199 #include <oop-read.h>
201 /*----- general definitions, probably best not changed -----*/
203 #define CONNCHILD_ESTATUS_STREAM 24
204 #define CONNCHILD_ESTATUS_NOSTREAM 25
206 #define INNDCOMMCHILD_ESTATUS_FAIL 26
207 #define INNDCOMMCHILD_ESTATUS_NONESUCH 27
209 #define MAX_LINE_FEEDFILE (NNTP_MSGID_MAXLEN + sizeof(TOKEN)*2 + 10)
210 #define MAX_CONTROL_COMMAND 1000
212 #define VA va_list al; va_start(al,fmt)
213 #define PRINTF(f,a) __attribute__((__format__(printf,f,a)))
214 #define NORET_PRINTF(f,a) __attribute__((__noreturn__,__format__(printf,f,a)))
216 #define DUMPV(fmt,pfx,v) fprintf(f, " " #v "=" fmt, pfx v);
218 /*----- doubly linked lists -----*/
220 #define ISNODE(T) struct node list_node
223 union { struct list li; T *for_type; } u; \
227 #define NODE(n) (assert((void*)&(n)->list_node == (n)), &(n)->list_node)
229 #define LIST_CHECKCANHAVENODE(l,n) \
230 ((void)((n) == ((l).u.for_type))) /* just for the type check */
232 #define LIST_ADDSOMEHOW(l,n,list_addsomehow) \
233 ( LIST_CHECKCANHAVENODE(l,n), \
234 list_addsomehow(&(l).u.li, NODE((n))), \
238 #define LIST_REMSOMEHOW(l,list_remsomehow) \
239 ( (typeof((l).u.for_type)) \
242 list_remsomehow(&(l).u.li) ) \
248 #define LIST_ADDHEAD(l,n) LIST_ADDSOMEHOW((l),(n),list_addhead)
249 #define LIST_ADDTAIL(l,n) LIST_ADDSOMEHOW((l),(n),list_addtail)
250 #define LIST_REMHEAD(l) LIST_REMSOMEHOW((l),list_remhead)
251 #define LIST_REMTAIL(l) LIST_REMSOMEHOW((l),list_remtail)
253 #define LIST_INIT(l) ((l).count=0, list_new(&(l).u.li))
254 #define LIST_HEAD(l) ((typeof((l).u.for_type))(list_head((struct list*)&(l))))
255 #define LIST_NEXT(n) ((typeof(n))list_succ(NODE((n))))
256 #define LIST_BACK(n) ((typeof(n))list_pred(NODE((n))))
258 #define LIST_REMOVE(l,n) \
259 ( LIST_CHECKCANHAVENODE(l,n), \
260 list_remove(NODE((n))), \
264 #define LIST_INSERT(l,n,pred) \
265 ( LIST_CHECKCANHAVENODE(l,n), \
266 LIST_CHECKCANHAVENODE(l,pred), \
267 list_insert((struct list*)&(l), NODE((n)), NODE((pred))), \
271 /*----- type predeclarations -----*/
273 typedef struct Conn Conn;
274 typedef struct Article Article;
275 typedef struct InputFile InputFile;
276 typedef struct XmitDetails XmitDetails;
277 typedef struct Filemon_Perfile Filemon_Perfile;
278 typedef enum StateMachineState StateMachineState;
279 typedef struct ControlCommand ControlCommand;
284 /*----- function predeclarations -----*/
286 static void conn_maybe_write(Conn *conn);
287 static void conn_make_some_xmits(Conn *conn);
288 static void *conn_write_some_xmits(Conn *conn);
290 static void xmit_free(XmitDetails *d);
292 #define SMS(newstate, periods, why) \
293 (statemc_setstate(sm_##newstate,(periods),#newstate,(why)))
294 static void statemc_setstate(StateMachineState newsms, int periods,
295 const char *forlog, const char *why);
297 static void statemc_start_flush(const char *why); /* Normal => Flushing */
298 static void spawn_inndcomm_flush(const char *why); /* Moved => Flushing */
300 static void article_done(Conn *conn, Article *art, int whichcount);
302 static void check_assign_articles(void);
303 static void queue_check_input_done(void);
305 static void statemc_check_flushing_done(void);
306 static void statemc_check_backlog_done(void);
308 static void postfork(void);
309 static void period(void);
311 static void open_defer(void);
312 static void close_defer(void);
313 static void search_backlog_file(void);
314 static void preterminate(void);
315 static void defraise(int signo);
316 static char *debug_report_ipf(InputFile *ipf);
318 static void inputfile_reading_start(InputFile *ipf);
319 static void inputfile_reading_stop(InputFile *ipf);
321 static void filemon_start(InputFile *ipf);
322 static void filemon_stop(InputFile *ipf);
323 static void filemon_callback(InputFile *ipf);
325 static void vconnfail(Conn *conn, const char *fmt, va_list al) PRINTF(2,0);
326 static void connfail(Conn *conn, const char *fmt, ...) PRINTF(2,3);
328 static const oop_rd_style peer_rd_style;
329 static oop_rd_call peer_rd_err, peer_rd_ok;
331 /*----- configuration options -----*/
332 /* when changing defaults, remember to update the manpage */
334 static const char *sitename, *remote_host;
335 static const char *feedfile, *realsockdir="/tmp/innduct.control";
336 static int quiet_multiple=0;
337 static int become_daemon=1, try_filemon=1;
338 static int try_stream=1;
340 static const char *inndconffile;
342 static int max_connections=10;
343 static int max_queue_per_conn=200;
344 static int target_max_feedfile_size=100000;
345 static int period_seconds=60;
346 static int filepoll_seconds=5;
348 static int connection_setup_timeout=200;
349 static int inndcomm_flush_timeout=100;
351 static double nocheck_thresh= 95.0; /* converted from percentage by main */
352 static double nocheck_decay= 100; /* conv'd from articles to lambda by main */
354 /* all these are initialised to seconds, and converted to periods in main */
355 static int reconnect_delay_periods=1000;
356 static int flushfail_retry_periods=1000;
357 static int backlog_retry_minperiods=50;
358 static int backlog_spontrescan_periods=300;
359 static int spontaneous_flush_periods=100000;
360 static int need_activity_periods=1000;
362 static double max_bad_data_ratio= 1; /* conv'd from percentage by main */
363 static int max_bad_data_initial= 30;
364 /* in one corrupt 4096-byte block the number of newlines has
365 * mean 16 and standard deviation 3.99. 30 corresponds to z=+3.5 */
368 /*----- statistics -----*/
370 typedef enum { /* in queue in conn->sent */
371 art_Unchecked, /* not checked, not sent checking */
372 art_Wanted, /* checked, wanted sent body as requested */
373 art_Unsolicited, /* - sent body without check */
377 static const char *const artstate_names[]=
378 { "Unchecked", "Wanted", "Unsolicited", 0 };
380 #define RESULT_COUNTS(RCS,RCN) \
389 #define RCI_TRIPLE_FMT_BASE "%d (id=%d,bod=%d,nc=%d)"
390 #define RCI_TRIPLE_VALS_BASE(counts,x) \
391 counts[art_Unchecked] x \
392 + counts[art_Wanted] x \
393 + counts[art_Unsolicited] x, \
394 counts[art_Unchecked] x \
395 , counts[art_Wanted] x \
396 , counts[art_Unsolicited] x
399 #define RC_INDEX(x) RC_##x,
400 RESULT_COUNTS(RC_INDEX, RC_INDEX)
405 /*----- transmission buffers -----*/
410 xk_Malloc, xk_Const, xk_Artdata
422 /*----- core operational data structure types -----*/
425 /* This is also an instance of struct oop_readable */
426 struct oop_readable readable; /* first */
427 oop_readable_call *readable_callback;
428 void *readable_callback_user;
431 Filemon_Perfile *filemon;
433 oop_read *rd; /* non-0: reading; 0: constructing, or had EOF */
434 long inprogress; /* no. of articles read but not processed */
438 int counts[art_MaxState][RCI_max];
439 int readcount_ok, readcount_blank, readcount_err;
454 #define SMS_LIST(X) \
462 enum StateMachineState {
463 #define SMS_DEF_ENUM(s) sm_##s,
464 SMS_LIST(SMS_DEF_ENUM)
467 static const char *sms_names[]= {
468 #define SMS_DEF_NAME(s) #s ,
469 SMS_LIST(SMS_DEF_NAME)
475 int fd; /* may be 0, meaning closed (during construction/destruction) */
476 oop_read *rd; /* likewise */
477 int max_queue, stream, quitting;
478 int since_activity; /* periods */
479 ArticleList waiting; /* not yet told peer */
480 ArticleList priority; /* peer says send it now */
481 ArticleList sent; /* offered/transmitted - in xmit or waiting reply */
482 struct iovec xmit[CONNIOVS];
483 XmitDetails xmitd[CONNIOVS];
488 /*----- general operational variables -----*/
490 /* main initialises */
491 static oop_source *loop;
492 static ConnList conns;
493 static ArticleList queue;
494 static char *path_lock, *path_flushing, *path_defer;
495 static char *path_control, *path_dump;
496 static char *globpat_backlog;
497 static pid_t self_pid;
499 /* statemc_init initialises */
500 static StateMachineState sms;
501 static int sm_period_counter;
502 static InputFile *main_input_file, *flushing_input_file, *backlog_input_file;
505 /* initialisation to 0 is good */
506 static int until_connect, until_backlog_nextscan;
507 static double accept_proportion;
508 static int nocheck, nocheck_reported, in_child;
510 /* for simulation, debugging, etc. */
511 int simulate_flush= -1;
513 /*========== logging ==========*/
515 static void logcore(int sysloglevel, const char *fmt, ...) PRINTF(2,3);
516 static void logcore(int sysloglevel, const char *fmt, ...) {
519 vsyslog(sysloglevel,fmt,al);
521 if (self_pid) fprintf(stderr,"[%lu] ",(unsigned long)self_pid);
522 vfprintf(stderr,fmt,al);
528 static void logv(int sysloglevel, const char *pfx, int errnoval,
529 const char *fmt, va_list al) PRINTF(5,0);
530 static void logv(int sysloglevel, const char *pfx, int errnoval,
531 const char *fmt, va_list al) {
532 char msgbuf[256]; /* NB do not call xvasprintf here or you'll recurse */
533 vsnprintf(msgbuf,sizeof(msgbuf), fmt,al);
534 msgbuf[sizeof(msgbuf)-1]= 0;
536 if (sysloglevel >= LOG_ERR && (errnoval==EACCES || errnoval==EPERM))
537 sysloglevel= LOG_ERR; /* run by wrong user, probably */
539 logcore(sysloglevel, "<%s>%s: %s%s%s",
540 sitename, pfx, msgbuf,
541 errnoval>=0 ? ": " : "",
542 errnoval>=0 ? strerror(errnoval) : "");
545 #define diewrap(fn, pfx, sysloglevel, err, estatus) \
546 static void fn(const char *fmt, ...) NORET_PRINTF(1,2); \
547 static void fn(const char *fmt, ...) { \
550 logv(sysloglevel, pfx, err, fmt, al); \
554 #define logwrap(fn, pfx, sysloglevel, err) \
555 static void fn(const char *fmt, ...) PRINTF(1,2); \
556 static void fn(const char *fmt, ...) { \
558 logv(sysloglevel, pfx, err, fmt, al); \
562 diewrap(sysdie, " critical", LOG_CRIT, errno, 16);
563 diewrap(die, " critical", LOG_CRIT, -1, 16);
565 diewrap(sysfatal, " fatal", LOG_ERR, errno, 12);
566 diewrap(fatal, " fatal", LOG_ERR, -1, 12);
568 logwrap(syswarn, " warning", LOG_WARNING, errno);
569 logwrap(warn, " warning", LOG_WARNING, -1);
571 logwrap(notice, " notice", LOG_NOTICE, -1);
572 logwrap(info, " info", LOG_INFO, -1);
573 logwrap(debug, " debug", LOG_DEBUG, -1);
576 /*========== utility functions etc. ==========*/
578 static char *xvasprintf(const char *fmt, va_list al) PRINTF(1,0);
579 static char *xvasprintf(const char *fmt, va_list al) {
581 int rc= vasprintf(&str,fmt,al);
582 if (rc<0) sysdie("vasprintf(\"%s\",...) failed", fmt);
585 static char *xasprintf(const char *fmt, ...) PRINTF(1,2);
586 static char *xasprintf(const char *fmt, ...) {
588 char *str= xvasprintf(fmt,al);
593 static int close_perhaps(int *fd) {
594 if (*fd <= 0) return 0;
599 static void xclose(int fd, const char *what, const char *what2) {
601 if (r) sysdie("close %s%s",what,what2?what2:"");
603 static void xclose_perhaps(int *fd, const char *what, const char *what2) {
604 if (*fd <= 0) return;
605 xclose(*fd,what,what2);
609 static pid_t xfork(const char *what) {
613 if (child==-1) sysfatal("cannot fork for %s",what);
614 debug("forked %s %ld", what, (unsigned long)child);
615 if (!child) postfork();
619 static void on_fd_read_except(int fd, oop_call_fd callback) {
620 loop->on_fd(loop, fd, OOP_READ, callback, 0);
621 loop->on_fd(loop, fd, OOP_EXCEPTION, callback, 0);
623 static void cancel_fd_read_except(int fd) {
624 loop->cancel_fd(loop, fd, OOP_READ);
625 loop->cancel_fd(loop, fd, OOP_EXCEPTION);
628 static void report_child_status(const char *what, int status) {
629 if (WIFEXITED(status)) {
630 int es= WEXITSTATUS(status);
632 warn("%s: child died with error exit status %d", what, es);
633 } else if (WIFSIGNALED(status)) {
634 int sig= WTERMSIG(status);
635 const char *sigstr= strsignal(sig);
636 const char *coredump= WCOREDUMP(status) ? " (core dumped)" : "";
638 warn("%s: child died due to fatal signal %s%s", what, sigstr, coredump);
640 warn("%s: child died due to unknown fatal signal %d%s",
641 what, sig, coredump);
643 warn("%s: child died with unknown wait status %d", what,status);
647 static int xwaitpid(pid_t *pid, const char *what) {
650 int r= kill(*pid, SIGKILL);
651 if (r) sysdie("cannot kill %s child", what);
653 pid_t got= waitpid(*pid, &status, 0);
654 if (got==-1) sysdie("cannot reap %s child", what);
655 if (got==0) die("cannot reap %s child", what);
662 static void xunlink(const char *path, const char *what) {
664 if (r) sysdie("can't unlink %s %s", path, what);
667 static time_t xtime(void) {
669 if (now==-1) sysdie("time(2) failed");
673 static void xsigaction(int s, const struct sigaction *sa) {
674 int r= sigaction(s,sa,0);
675 if (r) sysdie("sigaction failed for \"%s\"", strsignal(s));
678 static void xgettimeofday(struct timeval *tv_r) {
679 int r= gettimeofday(tv_r,0);
680 if (r) sysdie("gettimeofday(2) failed");
683 static void xsetnonblock(int fd, int nonblocking) {
684 int errnoval= oop_fd_nonblock(fd, nonblocking);
685 if (errnoval) { errno= errnoval; sysdie("setnonblocking"); }
688 static void check_isreg(const struct stat *stab, const char *path,
690 if (!S_ISREG(stab->st_mode))
691 die("%s %s not a plain file (mode 0%lo)",
692 what, path, (unsigned long)stab->st_mode);
695 static void xfstat(int fd, struct stat *stab_r, const char *what) {
696 int r= fstat(fd, stab_r);
697 if (r) sysdie("could not fstat %s", what);
700 static void xfstat_isreg(int fd, struct stat *stab_r,
701 const char *path, const char *what) {
702 xfstat(fd, stab_r, what);
703 check_isreg(stab_r, path, what);
706 static void xlstat_isreg(const char *path, struct stat *stab,
707 int *enoent_r /* 0 means ENOENT is fatal */,
709 int r= lstat(path, stab);
711 if (errno==ENOENT && enoent_r) { *enoent_r=1; return; }
712 sysdie("could not lstat %s %s", what, path);
714 if (enoent_r) *enoent_r= 0;
715 check_isreg(stab, path, what);
718 static int samefile(const struct stat *a, const struct stat *b) {
719 assert(S_ISREG(a->st_mode));
720 assert(S_ISREG(b->st_mode));
721 return (a->st_ino == b->st_ino &&
722 a->st_dev == b->st_dev);
725 static char *sanitise(const char *input, int len) {
726 static char sanibuf[100]; /* returns pointer to this buffer! */
728 const char *p= input;
729 const char *endp= len>=0 ? input+len : 0;
733 if (q > sanibuf+sizeof(sanibuf)-8) { strcpy(q,"'.."); break; }
734 int c= (!endp || p<endp) ? *p++ : 0;
735 if (!c) { *q++= '\''; *q=0; break; }
736 if (c>=' ' && c<=126 && c!='\\') { *q++= c; continue; }
737 sprintf(q,"\\x%02x",c);
743 static int isewouldblock(int errnoval) {
744 return errnoval==EWOULDBLOCK || errnoval==EAGAIN;
747 /*========== command and control connections ==========*/
749 static int control_master;
751 typedef struct ControlConn ControlConn;
753 void (*destroy)(ControlConn*);
759 struct sockaddr_un un;
764 static const oop_rd_style control_rd_style= {
765 OOP_RD_DELIM_STRIP, '\n',
767 OOP_RD_SHORTREC_FORBID
770 static void control_destroy(ControlConn *cc) {
774 static void control_checkouterr(ControlConn *cc /* may destroy*/) {
775 if (ferror(cc->out) | fflush(cc->out)) {
776 info("CTRL%d write error %s", cc->fd, strerror(errno));
781 static void control_prompt(ControlConn *cc /* may destroy*/) {
782 fprintf(cc->out, "%s| ", sitename);
783 control_checkouterr(cc);
786 struct ControlCommand {
788 void (*f)(ControlConn *cc, const ControlCommand *ccmd,
789 const char *arg, size_t argsz);
794 static const ControlCommand control_commands[];
797 static void ccmd_##wh(ControlConn *cc, const ControlCommand *c, \
798 const char *arg, size_t argsz)
801 fputs("commands:\n", cc->out);
802 const ControlCommand *ccmd;
803 for (ccmd=control_commands; ccmd->cmd; ccmd++)
804 fprintf(cc->out, " %s\n", ccmd->cmd);
807 CCMD(period) { period(); }
808 CCMD(setintarg) { *(int*)c->xdata= atoi(arg); }
809 CCMD(setint) { *(int*)c->xdata= c->xval; }
810 CCMD(setint_period) { *(int*)c->xdata= c->xval; period(); }
815 notice("terminating (CTRL%d)",cc->fd);
820 static const ControlCommand control_commands[]= {
822 { "p", ccmd_period },
823 { "stop", ccmd_stop },
824 { "dump q", ccmd_dump, 0,0 },
825 { "dump a", ccmd_dump, 0,1 },
827 #define POKES(cmd,func) \
828 { cmd "sm", func, &sm_period_counter, 1 }, \
829 { cmd "conn", func, &until_connect, 0 }, \
830 { cmd "blscan", func, &until_backlog_nextscan, 0 },
831 POKES("prod ", ccmd_setint_period)
832 POKES("next ", ccmd_setint)
834 { "pretend flush", ccmd_setintarg, &simulate_flush },
835 { "wedge blscan", ccmd_setint, &until_backlog_nextscan, -1 },
839 static void *control_rd_ok(oop_source *lp, oop_read *oread, oop_rd_event ev,
840 const char *errmsg, int errnoval,
841 const char *data, size_t recsz, void *cc_v) {
842 ControlConn *cc= cc_v;
845 info("CTRL%d closed", cc->fd);
850 if (recsz == 0) goto prompt;
852 const ControlCommand *ccmd;
853 for (ccmd=control_commands; ccmd->cmd; ccmd++) {
854 int l= strlen(ccmd->cmd);
855 if (recsz < l) continue;
856 if (recsz > l && data[l] != ' ') continue;
857 if (memcmp(data, ccmd->cmd, l)) continue;
859 int argl= (int)recsz - (l+1);
860 ccmd->f(cc, ccmd, argl>=0 ? data+l+1 : 0, argl);
864 fputs("unknown command; h for help\n", cc->out);
871 static void *control_rd_err(oop_source *lp, oop_read *oread, oop_rd_event ev,
872 const char *errmsg, int errnoval,
873 const char *data, size_t recsz, void *cc_v) {
874 ControlConn *cc= cc_v;
876 info("CTRL%d read error %s", cc->fd, errmsg);
881 static int control_conn_startup(ControlConn *cc /* may destroy*/,
883 cc->rd= oop_rd_new_fd(loop, cc->fd, 0,0);
884 if (!cc->rd) { warn("oop_rd_new_fd control failed"); return -1; }
886 int er= oop_rd_read(cc->rd, &control_rd_style, MAX_CONTROL_COMMAND,
889 if (er) { errno= er; syswarn("oop_rd_read control failed"); return -1; }
891 info("CTRL%d %s ready", cc->fd, how);
896 static void control_stdio_destroy(ControlConn *cc) {
898 oop_rd_cancel(cc->rd);
899 errno= oop_rd_delete_tidy(cc->rd);
900 if (errno) syswarn("oop_rd_delete tidy failed (no-nonblock stdin?)");
905 static void control_stdio(void) {
906 ControlConn *cc= xmalloc(sizeof(*cc));
907 memset(cc,0,sizeof(*cc));
908 cc->destroy= control_stdio_destroy;
912 int r= control_conn_startup(cc,"stdio");
913 if (r) cc->destroy(cc);
916 static void control_accepted_destroy(ControlConn *cc) {
918 oop_rd_cancel(cc->rd);
919 oop_rd_delete_kill(cc->rd);
921 if (cc->out) { fclose(cc->out); cc->fd=0; }
922 close_perhaps(&cc->fd);
926 static void *control_master_readable(oop_source *lp, int master,
927 oop_event ev, void *u) {
928 ControlConn *cc= xmalloc(sizeof(*cc));
929 memset(cc,0,sizeof(*cc));
930 cc->destroy= control_accepted_destroy;
932 cc->salen= sizeof(cc->sa);
933 cc->fd= accept(master, &cc->sa.sa, &cc->salen);
934 if (cc->fd<0) { syswarn("error accepting control connection"); goto x; }
936 cc->out= fdopen(cc->fd, "w");
937 if (!cc->out) { syswarn("error fdopening accepted control conn"); goto x; }
939 int r= control_conn_startup(cc, "accepted");
949 #define NOCONTROL(...) do{ \
950 syswarn("no control socket, because failed to " __VA_ARGS__); \
954 static void control_init(void) {
959 struct sockaddr_un un;
962 memset(&sa,0,sizeof(sa));
963 int maxlen= sizeof(sa.un.sun_path);
965 int reallen= readlink(path_control, sa.un.sun_path, maxlen);
968 NOCONTROL("readlink control socket symlink path %s", path_control);
970 if (reallen >= maxlen) {
971 debug("control socket symlink path too long (r=%d)",reallen);
972 xunlink(path_control, "old (overlong) control socket symlink");
978 int r= lstat(realsockdir,&stab);
980 if (errno != ENOENT) NOCONTROL("lstat real socket dir %s", realsockdir);
982 r= mkdir(realsockdir, 0700);
983 if (r) NOCONTROL("mkdir real socket dir %s", realsockdir);
986 uid_t self= geteuid();
987 if (!S_ISDIR(stab.st_mode) ||
988 stab.st_uid != self ||
989 stab.st_mode & 0007) {
990 warn("no control socket, because real socket directory"
991 " is somehow wrong (ISDIR=%d, uid=%lu (exp.%lu), mode %lo)",
992 !!S_ISDIR(stab.st_mode),
993 (unsigned long)stab.st_uid, (unsigned long)self,
994 (unsigned long)stab.st_mode & 0777UL);
999 real= xasprintf("%s/s%lx.%lx", realsockdir,
1000 (unsigned long)xtime(), (unsigned long)self_pid);
1001 int reallen= strlen(real);
1003 if (reallen >= maxlen) {
1004 warn("no control socket, because tmpnam gave overly-long path"
1008 r= symlink(real, path_control);
1009 if (r) NOCONTROL("make control socket path %s a symlink to real"
1010 " socket path %s", path_control, real);
1011 memcpy(sa.un.sun_path, real, reallen);
1014 int r= unlink(sa.un.sun_path);
1015 if (r && errno!=ENOENT)
1016 NOCONTROL("remove old real socket %s", sa.un.sun_path);
1018 control_master= socket(PF_UNIX, SOCK_STREAM, 0);
1019 if (control_master<0) NOCONTROL("create new control socket");
1021 sa.un.sun_family= AF_UNIX;
1022 int sl= strlen(sa.un.sun_path) + offsetof(struct sockaddr_un, sun_path);
1023 r= bind(control_master, &sa.sa, sl);
1024 if (r) NOCONTROL("bind to real socket path %s", sa.un.sun_path);
1026 r= listen(control_master, 5);
1027 if (r) NOCONTROL("listen");
1029 xsetnonblock(control_master, 1);
1031 loop->on_fd(loop, control_master, OOP_READ, control_master_readable, 0);
1032 info("control socket ok, real path %s", sa.un.sun_path);
1038 xclose_perhaps(&control_master, "control master",0);
1042 /*========== management of connections ==========*/
1044 static void conn_closefd(Conn *conn, const char *msgprefix) {
1045 int r= close_perhaps(&conn->fd);
1046 if (r) info("C%d %serror closing socket: %s",
1047 conn->fd, msgprefix, strerror(errno));
1050 static void conn_dispose(Conn *conn) {
1053 oop_rd_cancel(conn->rd);
1054 oop_rd_delete_kill(conn->rd);
1058 loop->cancel_fd(loop, conn->fd, OOP_WRITE);
1059 loop->cancel_fd(loop, conn->fd, OOP_EXCEPTION);
1061 conn_closefd(conn,"");
1063 until_connect= reconnect_delay_periods;
1066 static void *conn_exception(oop_source *lp, int fd,
1067 oop_event ev, void *conn_v) {
1070 assert(fd == conn->fd);
1071 assert(ev == OOP_EXCEPTION);
1072 int r= read(conn->fd, &ch, 1);
1073 if (r<0) connfail(conn,"read failed: %s",strerror(errno));
1074 else connfail(conn,"exceptional condition on socket (peer sent urgent"
1075 " data? read(,&ch,1)=%d,ch='\\x%02x')",r,ch);
1076 return OOP_CONTINUE;
1079 static void vconnfail(Conn *conn, const char *fmt, va_list al) {
1080 int requeue[art_MaxState];
1081 memset(requeue,0,sizeof(requeue));
1084 while ((art= LIST_REMHEAD(conn->priority))) LIST_ADDTAIL(queue, art);
1085 while ((art= LIST_REMHEAD(conn->waiting))) LIST_ADDTAIL(queue, art);
1086 while ((art= LIST_REMHEAD(conn->sent))) {
1087 requeue[art->state]++;
1088 if (art->state==art_Unsolicited) art->state= art_Unchecked;
1089 LIST_ADDTAIL(queue,art);
1094 for (i=0, d=conn->xmitd; i<conn->xmitu; i++, d++)
1097 char *m= xvasprintf(fmt,al);
1098 warn("C%d connection failed (requeueing " RCI_TRIPLE_FMT_BASE "): %s",
1099 conn->fd, RCI_TRIPLE_VALS_BASE(requeue, /*nothing*/), m);
1102 LIST_REMOVE(conns,conn);
1104 check_assign_articles();
1107 static void connfail(Conn *conn, const char *fmt, ...) {
1110 vconnfail(conn,fmt,al);
1114 static void check_idle_conns(void) {
1116 for (conn=LIST_HEAD(conns); conn; conn=LIST_NEXT(conn))
1117 conn->since_activity++;
1119 for (conn=LIST_HEAD(conns); conn; conn=LIST_NEXT(conn)) {
1120 if (conn->since_activity <= need_activity_periods) continue;
1122 /* We need to shut this down */
1124 connfail(conn,"timed out waiting for response to QUIT");
1125 else if (conn->sent.count)
1126 connfail(conn,"timed out waiting for responses");
1127 else if (conn->waiting.count || conn->priority.count)
1128 connfail(conn,"BUG IN INNDUCT conn has queue but nothing sent");
1129 else if (conn->xmitu)
1130 connfail(conn,"peer has been sending responses"
1131 " before receiving our commands!");
1133 static const char quitcmd[]= "QUIT\r\n";
1134 int todo= sizeof(quitcmd)-1;
1135 const char *p= quitcmd;
1137 int r= write(conn->fd, p, todo);
1139 if (isewouldblock(errno))
1140 connfail(conn, "blocked writing QUIT to idle connection");
1142 connfail(conn, "failed to write QUIT to idle connection: %s",
1150 conn->since_activity= 0;
1151 debug("C%d is idle, quitting", conn->fd);
1160 /*---------- making new connections ----------*/
1162 static pid_t connecting_child;
1163 static int connecting_fdpass_sock;
1165 static void connect_attempt_discard(void) {
1166 if (connecting_child) {
1167 int status= xwaitpid(&connecting_child, "connect");
1168 if (!(WIFEXITED(status) ||
1169 (WIFSIGNALED(status) && WTERMSIG(status) == SIGKILL)))
1170 report_child_status("connect", status);
1172 if (connecting_fdpass_sock) {
1173 cancel_fd_read_except(connecting_fdpass_sock);
1174 xclose_perhaps(&connecting_fdpass_sock, "connecting fdpass socket",0);
1178 #define PREP_DECL_MSG_CMSG(msg) \
1180 struct iovec msgiov; \
1181 msgiov.iov_base= &msgbyte; \
1182 msgiov.iov_len= 1; \
1183 struct msghdr msg; \
1184 memset(&msg,0,sizeof(msg)); \
1185 char msg##cbuf[CMSG_SPACE(sizeof(int))]; \
1186 msg.msg_iov= &msgiov; \
1187 msg.msg_iovlen= 1; \
1188 msg.msg_control= msg##cbuf; \
1189 msg.msg_controllen= sizeof(msg##cbuf);
1191 static void *connchild_event(oop_source *lp, int fd, oop_event e, void *u) {
1194 assert(fd == connecting_fdpass_sock);
1196 PREP_DECL_MSG_CMSG(msg);
1198 ssize_t rs= recvmsg(fd, &msg, 0);
1200 if (isewouldblock(errno)) return OOP_CONTINUE;
1201 syswarn("failed to read socket from connecting child");
1205 conn= xmalloc(sizeof(*conn));
1206 memset(conn,0,sizeof(*conn));
1207 LIST_INIT(conn->waiting);
1208 LIST_INIT(conn->priority);
1209 LIST_INIT(conn->sent);
1211 struct cmsghdr *h= 0;
1212 if (rs >= 0) h= CMSG_FIRSTHDR(&msg);
1214 int status= xwaitpid(&connecting_child, "connect child (broken)");
1216 if (WIFEXITED(status)) {
1217 if (WEXITSTATUS(status) != 0 &&
1218 WEXITSTATUS(status) != CONNCHILD_ESTATUS_STREAM &&
1219 WEXITSTATUS(status) != CONNCHILD_ESTATUS_NOSTREAM)
1220 /* child already reported the problem */;
1222 if (e == OOP_EXCEPTION)
1223 warn("connect: connection child exited code %d but"
1224 " unexpected exception on fdpass socket",
1225 WEXITSTATUS(status));
1227 warn("connect: connection child exited code %d but"
1229 WEXITSTATUS(status), (int)rs);
1231 } else if (WIFSIGNALED(status) && WTERMSIG(status) == SIGALRM) {
1232 warn("connect: connection attempt timed out");
1234 report_child_status("connect", status);
1239 #define CHK(field, val) \
1240 if (h->cmsg_##field != val) { \
1241 die("connect: child sent cmsg with cmsg_" #field "=%d, expected %d", \
1242 h->cmsg_##field, val); \
1245 CHK(level, SOL_SOCKET);
1246 CHK(type, SCM_RIGHTS);
1247 CHK(len, CMSG_LEN(sizeof(conn->fd)));
1250 if (CMSG_NXTHDR(&msg,h)) die("connect: child sent many cmsgs");
1252 memcpy(&conn->fd, CMSG_DATA(h), sizeof(conn->fd));
1255 pid_t got= waitpid(connecting_child, &status, 0);
1256 if (got==-1) sysdie("connect: real wait for child");
1257 assert(got == connecting_child);
1258 connecting_child= 0;
1260 if (!WIFEXITED(status)) { report_child_status("connect",status); goto x; }
1261 int es= WEXITSTATUS(status);
1263 case CONNCHILD_ESTATUS_STREAM: conn->stream= 1; break;
1264 case CONNCHILD_ESTATUS_NOSTREAM: conn->stream= 0; break;
1266 fatal("connect: child gave unexpected exit status %d", es);
1270 conn->max_queue= conn->stream ? max_queue_per_conn : 1;
1272 loop->on_fd(loop, conn->fd, OOP_EXCEPTION, conn_exception, conn);
1273 conn->rd= oop_rd_new_fd(loop,conn->fd, 0, 0); /* sets nonblocking, too */
1274 if (!conn->fd) die("oop_rd_new_fd conn failed (fd=%d)",conn->fd);
1275 int r= oop_rd_read(conn->rd, &peer_rd_style, NNTP_STRLEN,
1277 &peer_rd_err, conn);
1278 if (r) sysdie("oop_rd_read for peer (fd=%d)",conn->fd);
1280 notice("C%d connected %s", conn->fd, conn->stream ? "streaming" : "plain");
1281 LIST_ADDHEAD(conns, conn);
1283 connect_attempt_discard();
1284 check_assign_articles();
1285 return OOP_CONTINUE;
1289 connect_attempt_discard();
1290 return OOP_CONTINUE;
1293 static int allow_connect_start(void) {
1294 return conns.count < max_connections
1295 && !connecting_child
1299 static void connect_start(void) {
1300 assert(!connecting_child);
1301 assert(!connecting_fdpass_sock);
1303 info("starting connection attempt");
1306 int r= socketpair(AF_UNIX, SOCK_STREAM, 0, socks);
1307 if (r) { syswarn("connect: cannot create socketpair for child"); return; }
1309 connecting_child= xfork("connection");
1311 if (!connecting_child) {
1312 FILE *cn_from, *cn_to;
1313 char buf[NNTP_STRLEN+100];
1314 int exitstatus= CONNCHILD_ESTATUS_NOSTREAM;
1316 xclose(socks[0], "(in child) parent's connection fdpass socket",0);
1318 alarm(connection_setup_timeout);
1319 if (NNTPconnect((char*)remote_host, port, &cn_from, &cn_to, buf) < 0) {
1323 unsigned char c= buf[l-1];
1324 if (!isspace(c)) break;
1325 if (c=='\n' || c=='\r') stripped=1;
1329 sysfatal("connect: connection attempt failed");
1332 fatal("connect: %s: %s", stripped ? "rejected" : "failed",
1336 if (NNTPsendpassword((char*)remote_host, cn_from, cn_to) < 0)
1337 sysfatal("connect: authentication failed");
1339 if (fputs("MODE STREAM\r\n", cn_to)==EOF ||
1341 sysfatal("connect: could not send MODE STREAM");
1342 buf[sizeof(buf)-1]= 0;
1343 if (!fgets(buf, sizeof(buf)-1, cn_from)) {
1344 if (ferror(cn_from))
1345 sysfatal("connect: could not read response to MODE STREAM");
1347 fatal("connect: connection close in response to MODE STREAM");
1352 fatal("connect: response to MODE STREAM is too long: %.100s...",
1354 l--; if (l>0 && buf[l-1]=='\r') l--;
1357 int rcode= strtoul(buf,&ep,10);
1359 fatal("connect: bad response to MODE STREAM: %.50s", sanitise(buf,-1));
1363 exitstatus= CONNCHILD_ESTATUS_STREAM;
1369 warn("connect: unexpected response to MODE STREAM: %.50s",
1375 int fd= fileno(cn_from);
1377 PREP_DECL_MSG_CMSG(msg);
1378 struct cmsghdr *cmsg= CMSG_FIRSTHDR(&msg);
1379 cmsg->cmsg_level= SOL_SOCKET;
1380 cmsg->cmsg_type= SCM_RIGHTS;
1381 cmsg->cmsg_len= CMSG_LEN(sizeof(fd));
1382 memcpy(CMSG_DATA(cmsg), &fd, sizeof(fd));
1384 msg.msg_controllen= cmsg->cmsg_len;
1385 r= sendmsg(socks[1], &msg, 0);
1386 if (r<0) sysdie("sendmsg failed for new connection");
1387 if (r!=1) die("sendmsg for new connection gave wrong result %d",r);
1392 xclose(socks[1], "connecting fdpass child's socket",0);
1393 connecting_fdpass_sock= socks[0];
1394 xsetnonblock(connecting_fdpass_sock, 1);
1395 on_fd_read_except(connecting_fdpass_sock, connchild_event);
1398 /*---------- assigning articles to conns, and transmitting ----------*/
1400 static void check_assign_articles(void) {
1406 int spare=0, inqueue=0;
1408 /* Find a connection to offer this article. We prefer a busy
1409 * connection to an idle one, provided it's not full. We take the
1410 * first (oldest) and since that's stable, it will mean we fill up
1411 * connections in order. That way if we have too many
1412 * connections, the spare ones will go away eventually.
1414 for (walk=LIST_HEAD(conns); walk; walk=LIST_NEXT(walk)) {
1415 if (walk->quitting) continue;
1416 inqueue= walk->sent.count + walk->priority.count
1417 + walk->waiting.count;
1418 spare= walk->max_queue - inqueue;
1419 assert(inqueue <= max_queue_per_conn);
1421 if (inqueue==0) /*idle*/ { if (!use) use= walk; }
1422 else if (spare>0) /*working*/ { use= walk; break; }
1425 if (!inqueue) use->since_activity= 0; /* reset idle counter */
1427 Article *art= LIST_REMHEAD(queue);
1429 LIST_ADDTAIL(use->waiting, art);
1432 conn_maybe_write(use);
1433 } else if (allow_connect_start()) {
1434 until_connect= reconnect_delay_periods;
1443 static void *conn_writeable(oop_source *l, int fd, oop_event ev, void *u) {
1444 conn_maybe_write(u);
1445 return OOP_CONTINUE;
1448 static void conn_maybe_write(Conn *conn) {
1450 conn_make_some_xmits(conn);
1452 loop->cancel_fd(loop, conn->fd, OOP_WRITE);
1456 void *rp= conn_write_some_xmits(conn);
1457 if (rp==OOP_CONTINUE) {
1458 loop->on_fd(loop, conn->fd, OOP_WRITE, conn_writeable, conn);
1460 } else if (rp==OOP_HALT) {
1463 /* transmitted everything */
1470 /*========== article transmission ==========*/
1472 static XmitDetails *xmit_core(Conn *conn, const char *data, int len,
1473 XmitKind kind) { /* caller must then fill in details */
1474 struct iovec *v= &conn->xmit[conn->xmitu];
1475 XmitDetails *d= &conn->xmitd[conn->xmitu++];
1476 v->iov_base= (char*)data;
1482 static void xmit_noalloc(Conn *conn, const char *data, int len) {
1483 xmit_core(conn,data,len, xk_Const);
1485 #define XMIT_LITERAL(lit) (xmit_noalloc(conn, (lit), sizeof(lit)-1))
1487 static void xmit_artbody(Conn *conn, ARTHANDLE *ah /* consumed */) {
1488 XmitDetails *d= xmit_core(conn, ah->data, ah->len, xk_Artdata);
1492 static void xmit_free(XmitDetails *d) {
1494 case xk_Malloc: free(d->info.malloc_tofree); break;
1495 case xk_Artdata: SMfreearticle(d->info.sm_art); break;
1496 case xk_Const: break;
1501 static void *conn_write_some_xmits(Conn *conn) {
1503 * 0: nothing more to write, no need to call us again
1504 * OOP_CONTINUE: more to write but fd not writeable
1505 * OOP_HALT: disaster, have destroyed conn
1508 int count= conn->xmitu;
1509 if (!count) return 0;
1511 if (count > IOV_MAX) count= IOV_MAX;
1512 ssize_t rs= writev(conn->fd, conn->xmit, count);
1514 if (isewouldblock(errno)) return OOP_CONTINUE;
1515 connfail(conn, "write failed: %s", strerror(errno));
1521 for (done=0; rs && done<conn->xmitu; done++) {
1522 struct iovec *vp= &conn->xmit[done];
1523 XmitDetails *dp= &conn->xmitd[done];
1524 if (rs > vp->iov_len) {
1528 vp->iov_base= (char*)vp->iov_base + rs;
1532 int newu= conn->xmitu - done;
1533 memmove(conn->xmit, conn->xmit + done, newu * sizeof(*conn->xmit));
1534 memmove(conn->xmitd, conn->xmitd + done, newu * sizeof(*conn->xmitd));
1539 static void conn_make_some_xmits(Conn *conn) {
1541 if (conn->xmitu+5 > CONNIOVS)
1544 Article *art= LIST_REMHEAD(conn->priority);
1545 if (!art) art= LIST_REMHEAD(conn->waiting);
1548 if (art->state >= art_Wanted || (conn->stream && nocheck)) {
1549 /* actually send it */
1551 ARTHANDLE *artdata= SMretrieve(art->token, RETR_ALL);
1554 art->state == art_Unchecked ? art_Unsolicited :
1555 art->state == art_Wanted ? art_Wanted :
1558 if (!artdata) art->missing= 1;
1559 art->ipf->counts[art->state][ artdata ? RC_sent : RC_missing ]++;
1563 XMIT_LITERAL("TAKETHIS ");
1564 xmit_noalloc(conn, art->messageid, art->midlen);
1565 XMIT_LITERAL("\r\n");
1566 xmit_artbody(conn, artdata);
1568 article_done(conn, art, -1);
1572 /* we got 235 from IHAVE */
1574 xmit_artbody(conn, artdata);
1576 XMIT_LITERAL(".\r\n");
1580 LIST_ADDTAIL(conn->sent, art);
1586 XMIT_LITERAL("CHECK ");
1588 XMIT_LITERAL("IHAVE ");
1589 xmit_noalloc(conn, art->messageid, art->midlen);
1590 XMIT_LITERAL("\r\n");
1592 assert(art->state == art_Unchecked);
1593 art->ipf->counts[art->state][RC_sent]++;
1594 LIST_ADDTAIL(conn->sent, art);
1600 /*========== handling responses from peer ==========*/
1602 static const oop_rd_style peer_rd_style= {
1603 OOP_RD_DELIM_STRIP, '\n',
1605 OOP_RD_SHORTREC_FORBID
1608 static void *peer_rd_err(oop_source *lp, oop_read *oread, oop_rd_event ev,
1609 const char *errmsg, int errnoval,
1610 const char *data, size_t recsz, void *conn_v) {
1612 connfail(conn, "error receiving from peer: %s", errmsg);
1613 return OOP_CONTINUE;
1616 static Article *article_reply_check(Conn *conn, const char *response,
1617 int code_indicates_streaming,
1619 /* 1:yes, -1:no, 0:dontcare */,
1620 const char *sanitised_response) {
1621 Article *art= LIST_HEAD(conn->sent);
1625 "peer gave unexpected response when no commands outstanding: %s",
1626 sanitised_response);
1630 if (code_indicates_streaming) {
1631 assert(!memchr(response, 0, 4)); /* ensured by peer_rd_ok */
1632 if (!conn->stream) {
1633 connfail(conn, "peer gave streaming response code "
1634 " to IHAVE or subsequent body: %s", sanitised_response);
1637 const char *got_mid= response+4;
1638 int got_midlen= strcspn(got_mid, " \n\r");
1639 if (got_midlen<3 || got_mid[0]!='<' || got_mid[got_midlen-1]!='>') {
1640 connfail(conn, "peer gave streaming response with syntactically invalid"
1641 " messageid: %s", sanitised_response);
1644 if (got_midlen != art->midlen ||
1645 memcmp(got_mid, art->messageid, got_midlen)) {
1646 connfail(conn, "peer gave streaming response code to wrong article -"
1647 " probable synchronisation problem; we offered: %s;"
1649 art->messageid, sanitised_response);
1654 connfail(conn, "peer gave non-streaming response code to"
1655 " CHECK/TAKETHIS: %s", sanitised_response);
1660 if (must_have_sent>0 && art->state < art_Wanted) {
1661 connfail(conn, "peer says article accepted but"
1662 " we had not sent the body: %s", sanitised_response);
1665 if (must_have_sent<0 && art->state >= art_Wanted) {
1666 connfail(conn, "peer says please sent the article but we just did: %s",
1667 sanitised_response);
1671 Article *art_again= LIST_REMHEAD(conn->sent);
1672 assert(art_again == art);
1676 static void update_nocheck(int accepted) {
1677 accept_proportion *= nocheck_decay;
1678 accept_proportion += accepted * (1.0 - nocheck_decay);
1679 int new_nocheck= accept_proportion >= nocheck_thresh;
1680 if (new_nocheck && !nocheck_reported) {
1681 notice("entering nocheck mode for the first time");
1682 nocheck_reported= 1;
1683 } else if (new_nocheck != nocheck) {
1684 debug("nocheck mode %s", new_nocheck ? "start" : "stop");
1686 nocheck= new_nocheck;
1689 static void article_done(Conn *conn, Article *art, int whichcount) {
1690 if (!art->missing) art->ipf->counts[art->state][whichcount]++;
1692 if (whichcount == RC_accepted) update_nocheck(1);
1693 else if (whichcount == RC_unwanted) update_nocheck(0);
1695 InputFile *ipf= art->ipf;
1697 while (art->blanklen) {
1698 static const char spaces[]=
1708 int w= art->blanklen; if (w >= sizeof(spaces)) w= sizeof(spaces)-1;
1709 int r= pwrite(ipf->fd, spaces, w, art->offset);
1711 if (errno==EINTR) continue;
1712 sysdie("failed to blank entry for %s (length %d at offset %lu) in %s",
1713 art->messageid, art->blanklen,
1714 (unsigned long)art->offset, ipf->path);
1716 assert(r>=0 && r<=w);
1722 assert(ipf->inprogress >= 0);
1725 if (!ipf->inprogress && ipf != main_input_file)
1726 queue_check_input_done();
1729 static void *peer_rd_ok(oop_source *lp, oop_read *oread, oop_rd_event ev,
1730 const char *errmsg, int errnoval,
1731 const char *data, size_t recsz, void *conn_v) {
1734 if (ev == OOP_RD_EOF) {
1735 connfail(conn, "unexpected EOF from peer");
1736 return OOP_CONTINUE;
1738 assert(ev == OOP_RD_OK);
1740 char *sani= sanitise(data,-1);
1743 unsigned long code= strtoul(data, &ep, 10);
1744 if (ep != data+3 || *ep != ' ' || data[0]=='0') {
1745 connfail(conn, "badly formatted response from peer: %s", sani);
1746 return OOP_CONTINUE;
1750 conn->waiting.count ||
1751 conn->priority.count ||
1755 if (conn->quitting) {
1756 if (code!=205 && code!=503) {
1757 connfail(conn, "peer gave unexpected response to QUIT: %s", sani);
1759 notice("C%d idle connection closed by us", conn->fd);
1761 LIST_REMOVE(conns,conn);
1764 return OOP_CONTINUE;
1767 conn->since_activity= 0;
1770 #define GET_ARTICLE(musthavesent) do{ \
1771 art= article_reply_check(conn, data, code_streaming, musthavesent, sani); \
1772 if (!art) return OOP_CONTINUE; /* reply_check has failed the conn */ \
1775 #define ARTICLE_DEALTWITH(streaming,musthavesent,how) do{ \
1776 code_streaming= (streaming); \
1777 GET_ARTICLE(musthavesent); \
1778 article_done(conn, art, RC_##how); \
1782 #define PEERBADMSG(m) do { \
1783 connfail(conn, m ": %s", sani); return OOP_CONTINUE; \
1786 int code_streaming= 0;
1790 case 400: PEERBADMSG("peer stopped accepting articles");
1791 default: PEERBADMSG("peer sent unexpected message");
1794 if (conn_busy) PEERBADMSG("peer timed us out");
1795 notice("C%d idle connection closed by peer", conn->fd);
1796 LIST_REMOVE(conns,conn);
1798 return OOP_CONTINUE;
1800 case 435: ARTICLE_DEALTWITH(0,0,unwanted); /* IHAVE says they have it */
1801 case 438: ARTICLE_DEALTWITH(1,0,unwanted); /* CHECK/TAKETHIS: they have it */
1803 case 235: ARTICLE_DEALTWITH(0,1,accepted); /* IHAVE says thanks */
1804 case 239: ARTICLE_DEALTWITH(1,1,accepted); /* TAKETHIS says thanks */
1806 case 437: ARTICLE_DEALTWITH(0,0,rejected); /* IHAVE says rejected */
1807 case 439: ARTICLE_DEALTWITH(1,0,rejected); /* TAKETHIS says rejected */
1809 case 238: /* CHECK says send it */
1811 case 335: /* IHAVE says send it */
1813 assert(art->state == art_Unchecked);
1814 art->ipf->counts[art->state][RC_accepted]++;
1815 art->state= art_Wanted;
1816 LIST_ADDTAIL(conn->priority, art);
1819 case 431: /* CHECK or TAKETHIS says try later */
1821 case 436: /* IHAVE says try later */
1824 if (fprintf(defer, "%s %s\n", TokenToText(art->token), art->messageid) <0
1826 sysfatal("write to defer file %s",path_defer);
1827 article_done(conn, art, RC_deferred);
1833 conn_maybe_write(conn);
1834 check_assign_articles();
1835 return OOP_CONTINUE;
1839 /*========== monitoring of input files ==========*/
1841 static void feedfile_eof(InputFile *ipf) {
1842 assert(ipf != main_input_file); /* promised by tailing_try_read */
1843 inputfile_reading_stop(ipf);
1845 if (ipf == flushing_input_file) {
1846 assert(sms==sm_SEPARATED || sms==sm_DROPPING);
1847 if (main_input_file) inputfile_reading_start(main_input_file);
1848 statemc_check_flushing_done();
1849 } else if (ipf == backlog_input_file) {
1850 statemc_check_backlog_done();
1852 abort(); /* supposed to wait rather than get EOF on main input file */
1856 static InputFile *open_input_file(const char *path) {
1857 int fd= open(path, O_RDWR);
1859 if (errno==ENOENT) return 0;
1860 sysfatal("unable to open input file %s", path);
1864 InputFile *ipf= xmalloc(sizeof(*ipf) + strlen(path) + 1);
1865 memset(ipf,0,sizeof(*ipf));
1868 strcpy(ipf->path, path);
1873 static void close_input_file(InputFile *ipf) { /* does not free */
1874 assert(!ipf->readable_callback); /* must have had ->on_cancel */
1875 assert(!ipf->filemon); /* must have had inputfile_reading_stop */
1876 assert(!ipf->rd); /* must have had inputfile_reading_stop */
1877 assert(!ipf->inprogress); /* no dangling pointers pointing here */
1878 xclose_perhaps(&ipf->fd, "input file ", ipf->path);
1882 /*---------- dealing with articles read in the input file ----------*/
1884 static void *feedfile_got_bad_data(InputFile *ipf, off_t offset,
1885 const char *data, const char *how) {
1886 warn("corrupted file: %s, offset %lu: %s: in %s",
1887 ipf->path, (unsigned long)offset, how, sanitise(data,-1));
1888 ipf->readcount_err++;
1889 if (ipf->readcount_err > max_bad_data_initial +
1890 (ipf->readcount_ok+ipf->readcount_blank) / max_bad_data_ratio)
1891 die("too much garbage in input file! (%d errs, %d ok, %d blank)",
1892 ipf->readcount_err, ipf->readcount_ok, ipf->readcount_blank);
1893 return OOP_CONTINUE;
1896 static void *feedfile_read_err(oop_source *lp, oop_read *rd,
1897 oop_rd_event ev, const char *errmsg,
1898 int errnoval, const char *data, size_t recsz,
1900 InputFile *ipf= ipf_v;
1901 assert(ev == OOP_RD_SYSTEM);
1903 sysdie("error reading input file: %s, offset %lu",
1904 ipf->path, (unsigned long)ipf->offset);
1907 static void *feedfile_got_article(oop_source *lp, oop_read *rd,
1908 oop_rd_event ev, const char *errmsg,
1909 int errnoval, const char *data, size_t recsz,
1911 InputFile *ipf= ipf_v;
1913 char tokentextbuf[sizeof(TOKEN)*2+3];
1915 if (!data) { feedfile_eof(ipf); return OOP_CONTINUE; }
1917 off_t old_offset= ipf->offset;
1918 ipf->offset += recsz + 1;
1920 #define X_BAD_DATA(m) return feedfile_got_bad_data(ipf,old_offset,data,m);
1922 if (ev==OOP_RD_PARTREC)
1923 feedfile_got_bad_data(ipf,old_offset,data,"missing final newline");
1924 /* but process it anyway */
1926 if (ipf->skippinglong) {
1927 if (ev==OOP_RD_OK) ipf->skippinglong= 0; /* fine now */
1928 return OOP_CONTINUE;
1930 if (ev==OOP_RD_LONG) {
1931 ipf->skippinglong= 1;
1932 X_BAD_DATA("overly long line");
1935 if (memchr(data,'\0',recsz)) X_BAD_DATA("nul byte");
1936 if (!recsz) X_BAD_DATA("empty line");
1939 if (strspn(data," ") != recsz) X_BAD_DATA("line partially blanked");
1940 ipf->readcount_blank++;
1941 return OOP_CONTINUE;
1944 char *space= strchr(data,' ');
1945 int tokenlen= space-data;
1946 int midlen= (int)recsz-tokenlen-1;
1947 if (midlen <= 2) X_BAD_DATA("no room for messageid");
1948 if (space[1]!='<' || space[midlen]!='>') X_BAD_DATA("invalid messageid");
1950 if (tokenlen != sizeof(TOKEN)*2+2) X_BAD_DATA("token wrong length");
1951 memcpy(tokentextbuf, data, tokenlen);
1952 tokentextbuf[tokenlen]= 0;
1953 if (!IsToken(tokentextbuf)) X_BAD_DATA("token wrong syntax");
1955 ipf->readcount_ok++;
1957 art= xmalloc(sizeof(*art) - 1 + midlen + 1);
1958 memset(art,0,sizeof(art));
1959 art->state= art_Unchecked;
1960 art->midlen= midlen;
1961 art->ipf= ipf; ipf->inprogress++;
1962 art->token= TextToToken(tokentextbuf);
1963 art->offset= old_offset;
1964 art->blanklen= recsz;
1965 strcpy(art->messageid, space+1);
1966 LIST_ADDTAIL(queue, art);
1968 if (sms==sm_NORMAL && ipf==main_input_file &&
1969 ipf->offset >= target_max_feedfile_size)
1970 statemc_start_flush("feed file size");
1972 check_assign_articles();
1973 return OOP_CONTINUE;
1976 /*========== tailing input file ==========*/
1978 static void *tailing_rable_call_time(oop_source *loop, struct timeval tv,
1980 InputFile *ipf= user;
1981 return ipf->readable_callback(loop, &ipf->readable,
1982 ipf->readable_callback_user);
1985 static void tailing_on_cancel(struct oop_readable *rable) {
1986 InputFile *ipf= (void*)rable;
1988 if (ipf->filemon) filemon_stop(ipf);
1989 loop->cancel_time(loop, OOP_TIME_NOW, tailing_rable_call_time, ipf);
1990 ipf->readable_callback= 0;
1993 static void tailing_queue_readable(InputFile *ipf) {
1994 /* lifetime of ipf here is OK because destruction will cause
1995 * on_cancel which will cancel this callback */
1996 loop->on_time(loop, OOP_TIME_NOW, tailing_rable_call_time, ipf);
1999 static int tailing_on_readable(struct oop_readable *rable,
2000 oop_readable_call *cb, void *user) {
2001 InputFile *ipf= (void*)rable;
2003 tailing_on_cancel(rable);
2004 ipf->readable_callback= cb;
2005 ipf->readable_callback_user= user;
2008 tailing_queue_readable(ipf);
2012 static ssize_t tailing_try_read(struct oop_readable *rable, void *buffer,
2014 InputFile *ipf= (void*)rable;
2016 ssize_t r= read(ipf->fd, buffer, length);
2018 if (errno==EINTR) continue;
2022 if (ipf==main_input_file) {
2025 } else if (ipf==flushing_input_file) {
2027 assert(sms==sm_SEPARATED || sms==sm_DROPPING);
2028 } else if (ipf==backlog_input_file) {
2034 tailing_queue_readable(ipf);
2039 /*---------- filemon implemented with inotify ----------*/
2041 #if defined(HAVE_SYS_INOTIFY_H) && !defined(HAVE_FILEMON)
2042 #define HAVE_FILEMON
2044 #include <sys/inotify.h>
2046 static int filemon_inotify_fd;
2047 static int filemon_inotify_wdmax;
2048 static InputFile **filemon_inotify_wd2ipf;
2050 struct Filemon_Perfile {
2054 static void filemon_method_startfile(InputFile *ipf, Filemon_Perfile *pf) {
2055 int wd= inotify_add_watch(filemon_inotify_fd, ipf->path, IN_MODIFY);
2056 if (wd < 0) sysfatal("inotify_add_watch %s", ipf->path);
2058 if (wd >= filemon_inotify_wdmax) {
2060 filemon_inotify_wd2ipf= xrealloc(filemon_inotify_wd2ipf,
2061 sizeof(*filemon_inotify_wd2ipf) * newmax);
2062 memset(filemon_inotify_wd2ipf + filemon_inotify_wdmax, 0,
2063 sizeof(*filemon_inotify_wd2ipf) * (newmax - filemon_inotify_wdmax));
2064 filemon_inotify_wdmax= newmax;
2067 assert(!filemon_inotify_wd2ipf[wd]);
2068 filemon_inotify_wd2ipf[wd]= ipf;
2070 debug("filemon inotify startfile %p wd=%d wdmax=%d",
2071 ipf, wd, filemon_inotify_wdmax);
2076 static void filemon_method_stopfile(InputFile *ipf, Filemon_Perfile *pf) {
2078 debug("filemon inotify stopfile %p wd=%d", ipf, wd);
2079 int r= inotify_rm_watch(filemon_inotify_fd, wd);
2080 if (r) sysdie("inotify_rm_watch");
2081 filemon_inotify_wd2ipf[wd]= 0;
2084 static void *filemon_inotify_readable(oop_source *lp, int fd,
2085 oop_event e, void *u) {
2086 struct inotify_event iev;
2088 int r= read(filemon_inotify_fd, &iev, sizeof(iev));
2090 if (isewouldblock(errno)) break;
2091 sysdie("read from inotify master");
2092 } else if (r==sizeof(iev)) {
2093 assert(iev.wd >= 0 && iev.wd < filemon_inotify_wdmax);
2095 die("inotify read %d bytes wanted struct of %d", r, (int)sizeof(iev));
2097 InputFile *ipf= filemon_inotify_wd2ipf[iev.wd];
2098 debug("filemon inotify readable read %p wd=%d", ipf, iev.wd);
2099 filemon_callback(ipf);
2101 return OOP_CONTINUE;
2104 static int filemon_method_init(void) {
2105 filemon_inotify_fd= inotify_init();
2106 if (filemon_inotify_fd<0) {
2107 syswarn("filemon/inotify: inotify_init failed");
2110 xsetnonblock(filemon_inotify_fd, 1);
2111 loop->on_fd(loop, filemon_inotify_fd, OOP_READ, filemon_inotify_readable, 0);
2113 debug("filemon inotify init filemon_inotify_fd=%d", filemon_inotify_fd);
2117 static void filemon_method_dump_info(FILE *f) {
2119 fprintf(f,"inotify");
2120 DUMPV("%d",,filemon_inotify_fd);
2121 DUMPV("%d",,filemon_inotify_wdmax);
2122 for (i=0; i<filemon_inotify_wdmax; i++)
2123 fprintf(f," wd2ipf[%d]=%p\n", i, filemon_inotify_wd2ipf[i],);
2126 #endif /* HAVE_INOTIFY && !HAVE_FILEMON */
2128 /*---------- filemon dummy implementation ----------*/
2130 #if !defined(HAVE_FILEMON)
2132 struct Filemon_Perfile { int dummy; };
2134 static int filemon_method_init(void) {
2135 warn("filemon/dummy: no filemon method compiled in");
2138 static void filemon_method_startfile(InputFile *ipf, Filemon_Perfile *pf) { }
2139 static void filemon_method_stopfile(InputFile *ipf, Filemon_Perfile *pf) { }
2140 static void filemon_method_dump_info(FILE *f) { fprintf(f,"dummy\n"); }
2142 #endif /* !HAVE_FILEMON */
2144 /*---------- filemon generic interface ----------*/
2146 static void filemon_start(InputFile *ipf) {
2147 assert(!ipf->filemon);
2149 ipf->filemon= xmalloc(sizeof(*ipf->filemon));
2150 memset(ipf->filemon, 0, sizeof(*ipf->filemon));
2151 filemon_method_startfile(ipf, ipf->filemon);
2154 static void filemon_stop(InputFile *ipf) {
2155 if (!ipf->filemon) return;
2156 filemon_method_stopfile(ipf, ipf->filemon);
2161 static void filemon_callback(InputFile *ipf) {
2162 if (ipf && ipf->readable_callback) /* so filepoll() can be naive */
2163 ipf->readable_callback(loop, &ipf->readable, ipf->readable_callback_user);
2166 /*---------- interface to start and stop an input file ----------*/
2168 static const oop_rd_style feedfile_rdstyle= {
2169 OOP_RD_DELIM_STRIP, '\n',
2171 OOP_RD_SHORTREC_LONG,
2174 static void inputfile_reading_start(InputFile *ipf) {
2176 ipf->readable.on_readable= tailing_on_readable;
2177 ipf->readable.on_cancel= tailing_on_cancel;
2178 ipf->readable.try_read= tailing_try_read;
2179 ipf->readable.delete_tidy= 0; /* we never call oop_rd_delete_{tidy,kill} */
2180 ipf->readable.delete_kill= 0;
2182 ipf->readable_callback= 0;
2183 ipf->readable_callback_user= 0;
2185 ipf->rd= oop_rd_new(loop, &ipf->readable, 0,0);
2188 int r= oop_rd_read(ipf->rd, &feedfile_rdstyle, MAX_LINE_FEEDFILE,
2189 feedfile_got_article,ipf, feedfile_read_err, ipf);
2190 if (r) sysdie("unable start reading feedfile %s",ipf->path);
2193 static void inputfile_reading_stop(InputFile *ipf) {
2195 oop_rd_cancel(ipf->rd);
2196 oop_rd_delete(ipf->rd);
2198 assert(!ipf->filemon); /* we shouldn't be monitoring it now */
2202 /*========== interaction with innd - state machine ==========*/
2204 /* See official state diagram at top of file. We implement
2215 |`---------------------------------------------------.
2217 |`---------------- - - - |
2218 D ENOENT | D EXISTS see OVERALL STATES diagram |
2219 | for full startup logic |
2222 | ============ try to |
2228 | | F IS SO BIG WE SHOULD FLUSH, OR TIMEOUT |
2229 ^ | hardlink F to D |
2232 | | our handle onto F is now onto D |
2235 | |<-------------------<---------------------<---------+
2237 | | spawn inndcomm flush |
2239 | ================== |
2240 | FLUSHING[-ABSENT] |
2242 | main D tail/none |
2243 | ================== |
2245 | | INNDCOMM FLUSH FAILS ^
2246 | |`----------------------->----------. |
2248 | | NO SUCH SITE V |
2249 ^ |`--------------->----. ==================== |
2250 | | \ FLUSHFAILED[-ABSENT] |
2252 | | FLUSH OK \ main D tail/none |
2253 | | open F \ ==================== |
2255 | | \ | TIME TO RETRY |
2256 | |`------->----. ,---<---'\ `----------------'
2257 | | D NONE | | D NONE `----.
2259 | ============= V V ============
2260 | SEPARATED-1 | | DROPPING-1
2261 | flsh->rd!=0 | | flsh->rd!=0
2262 | [Separated] | | [Dropping]
2263 | main F idle | | main none
2264 | old D tail | | old D tail
2265 | ============= | | ============
2267 ^ | EOF ON D | | defer | EOF ON D
2269 | =============== | | ===============
2270 | SEPARATED-2 | | DROPPING-2
2271 | flsh->rd==0 | V flsh->rd==0
2272 | [Finishing] | | [Dropping]
2273 | main F tail | `. main none
2274 | old D closed | `. old D closed
2275 | =============== V `. ===============
2277 | | ALL D PROCESSED `. | ALL D PROCESSED
2278 | V install defer as backlog `. | install defer
2279 ^ | close D `. | close D
2280 | | unlink D `. | unlink D
2283 `----------' ==============
2303 static void startup_set_input_file(InputFile *f) {
2304 assert(!main_input_file);
2306 inputfile_reading_start(f);
2309 static void statemc_lock(void) {
2311 struct stat stab, stabf;
2314 lockfd= open(path_lock, O_CREAT|O_RDWR, 0600);
2315 if (lockfd<0) sysfatal("open lockfile %s", path_lock);
2318 memset(&fl,0,sizeof(fl));
2320 fl.l_whence= SEEK_SET;
2321 int r= fcntl(lockfd, F_SETLK, &fl);
2323 if (errno==EACCES || isewouldblock(errno)) {
2324 if (quiet_multiple) exit(0);
2325 fatal("another duct holds the lockfile");
2327 sysfatal("fcntl F_SETLK lockfile %s", path_lock);
2330 xfstat_isreg(lockfd, &stabf, path_lock, "lockfile");
2332 xlstat_isreg(path_lock, &stab, &lock_noent, "lockfile");
2334 if (!lock_noent && samefile(&stab, &stabf))
2337 xclose(lockfd, "stale lockfile ", path_lock);
2340 FILE *lockfile= fdopen(lockfd, "w");
2341 if (!lockfile) sysdie("fdopen lockfile");
2343 int r= ftruncate(lockfd, 0);
2344 if (r) sysdie("truncate lockfile to write new info");
2346 if (fprintf(lockfile, "pid %ld\nsite %s\nfeedfile %s\nfqdn %s\n",
2347 (unsigned long)self_pid,
2348 sitename, feedfile, remote_host) == EOF ||
2350 sysfatal("write info to lockfile %s", path_lock);
2352 debug("startup: locked");
2355 static void statemc_init(void) {
2356 struct stat stabdefer;
2358 search_backlog_file();
2361 xlstat_isreg(path_defer, &stabdefer, &defer_noent, "defer file");
2363 debug("startup: ductdefer ENOENT");
2365 debug("startup: ductdefer nlink=%ld", (long)stabdefer.st_nlink);
2366 switch (stabdefer.st_nlink==1) {
2368 open_defer(); /* so that we will later close it and rename it */
2371 xunlink(path_defer, "stale defer file link"
2372 " (presumably hardlink to backlog file)");
2375 die("defer file %s has unexpected link count %d",
2376 path_defer, stabdefer.st_nlink);
2380 struct stat stab_f, stab_d;
2383 InputFile *file_d= open_input_file(path_flushing);
2384 if (file_d) xfstat_isreg(file_d->fd, &stab_d, path_flushing,"flushing file");
2386 xlstat_isreg(feedfile, &stab_f, &noent_f, "feedfile");
2388 if (!noent_f && file_d && samefile(&stab_f, &stab_d)) {
2389 debug("startup: F==D => Hardlinked");
2390 xunlink(feedfile, "feed file (during startup)"); /* => Moved */
2395 debug("startup: F ENOENT => Moved");
2396 if (file_d) startup_set_input_file(file_d);
2397 spawn_inndcomm_flush("feedfile missing at startup");
2398 /* => Flushing, sms:=FLUSHING */
2401 debug("startup: F!=D => Separated");
2402 startup_set_input_file(file_d);
2403 SMS(SEPARATED, 0, "found both old and current feed files");
2405 debug("startup: F exists, D ENOENT => Normal");
2406 InputFile *file_f= open_input_file(feedfile);
2407 if (!file_f) die("feed file vanished during startup");
2408 startup_set_input_file(file_f);
2409 SMS(NORMAL, spontaneous_flush_periods, "normal startup");
2414 static void statemc_start_flush(const char *why) { /* Normal => Flushing */
2415 assert(sms == sm_NORMAL);
2417 debug("starting flush (%s) (%lu >?= %lu) (%d)",
2419 (unsigned long)(main_input_file ? main_input_file->offset : 0),
2420 (unsigned long)target_max_feedfile_size,
2423 int r= link(feedfile, path_flushing);
2424 if (r) sysfatal("link feedfile %s to flushing file %s",
2425 feedfile, path_flushing);
2428 xunlink(feedfile, "old feedfile link");
2431 spawn_inndcomm_flush(why); /* => Flushing FLUSHING */
2434 static void statemc_period_poll(void) {
2435 if (!sm_period_counter) return;
2436 sm_period_counter--;
2437 assert(sm_period_counter>=0);
2439 if (sm_period_counter) return;
2442 statemc_start_flush("periodic"); /* Normal => Flushing; => FLUSHING */
2444 case sm_FLUSHFAILED:
2445 spawn_inndcomm_flush("retry"); /* Moved => Flushing; => FLUSHING */
2452 static int inputfile_is_done(InputFile *ipf) {
2454 if (ipf->inprogress) return 0; /* new article in the meantime */
2455 if (ipf->rd) return 0; /* not had EOF */
2459 static void notice_processed(InputFile *ipf, int completed,
2460 const char *what, const char *spec) {
2461 if (!ipf) return; /* allows preterminate to be lazy */
2463 #define RCI_NOTHING(x) /* nothing */
2464 #define RCI_TRIPLE_FMT(x) " " #x "=" RCI_TRIPLE_FMT_BASE
2465 #define RCI_TRIPLE_VALS(x) , RCI_TRIPLE_VALS_BASE(ipf->counts, [RC_##x])
2467 #define CNT(art,rc) (ipf->counts[art_##art][RC_##rc])
2469 char *inprog= completed
2470 ? xasprintf("%s","") /* GCC produces a stupid warning for printf("") ! */
2471 : xasprintf(" inprogress=%ld", ipf->inprogress);
2473 info("%s %s%s read=%d (+bl=%d,+err=%d)%s"
2474 " offered=%d (ch=%d,nc=%d) accepted=%d (ch=%d,nc=%d)"
2475 RESULT_COUNTS(RCI_NOTHING, RCI_TRIPLE_FMT)
2477 completed?"completed":"processed", what, spec,
2478 ipf->readcount_ok, ipf->readcount_blank, ipf->readcount_err, inprog,
2479 CNT(Unchecked,sent) + CNT(Unsolicited,sent)
2480 , CNT(Unchecked,sent), CNT(Unsolicited,sent),
2481 CNT(Wanted,accepted) + CNT(Unsolicited,accepted)
2482 , CNT(Wanted,accepted), CNT(Unsolicited,accepted)
2483 RESULT_COUNTS(RCI_NOTHING, RCI_TRIPLE_VALS)
2491 static void statemc_check_backlog_done(void) {
2492 InputFile *ipf= backlog_input_file;
2493 if (!inputfile_is_done(ipf)) return;
2495 const char *slash= strrchr(ipf->path, '/');
2496 const char *leaf= slash ? slash+1 : ipf->path;
2497 const char *under= strchr(slash, '_');
2498 const char *rest= under ? under+1 : leaf;
2499 if (!strncmp(rest,"backlog",7)) rest += 7;
2500 notice_processed(ipf,1,"backlog ",rest);
2502 close_input_file(ipf);
2503 if (unlink(ipf->path)) {
2504 if (errno != ENOENT)
2505 sysdie("could not unlink processed backlog file %s", ipf->path);
2506 warn("backlog file %s vanished while we were reading it"
2507 " so we couldn't remove it (but it's done now, anyway)",
2511 backlog_input_file= 0;
2512 search_backlog_file();
2516 static void statemc_check_flushing_done(void) {
2517 InputFile *ipf= flushing_input_file;
2518 if (!inputfile_is_done(ipf)) return;
2520 assert(sms==sm_SEPARATED || sms==sm_DROPPING);
2522 notice_processed(ipf,1,"feedfile","");
2526 xunlink(path_flushing, "old flushing file");
2528 close_input_file(flushing_input_file);
2529 free(flushing_input_file);
2530 flushing_input_file= 0;
2532 if (sms==sm_SEPARATED) {
2533 notice("flush complete");
2534 SMS(NORMAL, spontaneous_flush_periods, "flush complete");
2535 } else if (sms==sm_DROPPING) {
2536 SMS(DROPPED, 0, "old flush complete");
2537 search_backlog_file();
2538 notice("feed dropped, but will continue until backlog is finished");
2542 static void *statemc_check_input_done(oop_source *lp, struct timeval now,
2544 assert(!inputfile_is_done(main_input_file));
2545 statemc_check_flushing_done();
2546 statemc_check_backlog_done();
2547 return OOP_CONTINUE;
2550 static void queue_check_input_done(void) {
2551 loop->on_time(loop, OOP_TIME_NOW, statemc_check_input_done, 0);
2554 static void statemc_setstate(StateMachineState newsms, int periods,
2555 const char *forlog, const char *why) {
2557 sm_period_counter= periods;
2559 const char *xtra= "";
2562 case sm_FLUSHFAILED:
2563 if (!main_input_file) xtra= "-ABSENT";
2567 xtra= flushing_input_file->rd ? "-1" : "-2";
2573 info("state %s%s[%d] %s",forlog,xtra,periods,why);
2575 info("state %s%s %s",forlog,xtra,why);
2579 /*---------- defer and backlog files ----------*/
2581 static void open_defer(void) {
2586 defer= fopen(path_defer, "a+");
2587 if (!defer) sysfatal("could not open defer file %s", path_defer);
2589 /* truncate away any half-written records */
2591 xfstat_isreg(fileno(defer), &stab, path_defer, "newly opened defer file");
2593 if (stab.st_size > LONG_MAX)
2594 die("defer file %s size is far too large", path_defer);
2599 long orgsize= stab.st_size;
2600 long truncto= stab.st_size;
2602 if (!truncto) break; /* was only (if anything) one half-truncated record */
2603 if (fseek(defer, truncto-1, SEEK_SET) < 0)
2604 sysdie("seek in defer file %s while truncating partial", path_defer);
2609 sysdie("failed read from defer file %s", path_defer);
2611 die("defer file %s shrank while we were checking it!", path_defer);
2617 if (stab.st_size != truncto) {
2618 warn("truncating half-record at end of defer file %s -"
2619 " shrinking by %ld bytes from %ld to %ld",
2620 path_defer, orgsize - truncto, orgsize, truncto);
2623 sysfatal("could not flush defer file %s", path_defer);
2624 if (ftruncate(fileno(defer), truncto))
2625 sysdie("could not truncate defer file %s", path_defer);
2628 info("continuing existing defer file %s (%ld bytes)",
2629 path_defer, orgsize);
2631 if (fseek(defer, truncto, SEEK_SET))
2632 sysdie("could not seek to new end of defer file %s", path_defer);
2635 static void close_defer(void) {
2640 xfstat_isreg(fileno(defer), &stab, path_defer, "defer file");
2642 if (fclose(defer)) sysfatal("could not close defer file %s", path_defer);
2645 time_t now= xtime();
2647 char *backlog= xasprintf("%s_backlog_%lu.%lu", feedfile,
2649 (unsigned long)stab.st_ino);
2650 if (link(path_defer, backlog))
2651 sysfatal("could not install defer file %s as backlog file %s",
2652 path_defer, backlog);
2653 if (unlink(path_defer))
2654 sysdie("could not unlink old defer link %s to backlog file %s",
2655 path_defer, backlog);
2659 if (until_backlog_nextscan < 0 ||
2660 until_backlog_nextscan > backlog_retry_minperiods + 1)
2661 until_backlog_nextscan= backlog_retry_minperiods + 1;
2664 static void poll_backlog_file(void) {
2665 if (until_backlog_nextscan < 0) return;
2666 if (until_backlog_nextscan-- > 0) return;
2667 search_backlog_file();
2670 static void search_backlog_file(void) {
2671 /* returns non-0 iff there are any backlog files */
2676 const char *oldest_path=0;
2677 time_t oldest_mtime=0, now;
2679 if (backlog_input_file) return;
2683 r= glob(globpat_backlog, GLOB_ERR|GLOB_MARK|GLOB_NOSORT, 0, &gl);
2687 sysfatal("failed to expand backlog pattern %s", globpat_backlog);
2689 fatal("out of memory expanding backlog pattern %s", globpat_backlog);
2691 for (i=0; i<gl.gl_pathc; i++) {
2692 const char *path= gl.gl_pathv[i];
2694 if (strchr(path,'#') || strchr(path,'~')) {
2695 debug("backlog file search skipping %s", path);
2698 r= stat(path, &stab);
2700 syswarn("failed to stat backlog file %s", path);
2703 if (!S_ISREG(stab.st_mode)) {
2704 warn("backlog file %s is not a plain file (or link to one)", path);
2707 if (!oldest_path || stab.st_mtime < oldest_mtime) {
2709 oldest_mtime= stab.st_mtime;
2712 case GLOB_NOMATCH: /* fall through */
2715 sysdie("glob expansion of backlog pattern %s gave unexpected"
2716 " nonzero (error?) return value %d", globpat_backlog, r);
2720 debug("backlog scan: none");
2722 if (sms==sm_DROPPED) {
2724 notice("feed dropped and our work is complete");
2726 int r= unlink(path_control);
2727 if (r && errno!=ENOENT)
2728 syswarn("failed to remove control symlink for old feed");
2730 xunlink(path_lock, "lockfile for old feed");
2733 until_backlog_nextscan= backlog_spontrescan_periods;
2738 double age= difftime(now, oldest_mtime);
2739 long age_deficiency= (backlog_retry_minperiods * period_seconds) - age;
2741 if (age_deficiency <= 0) {
2742 debug("backlog scan: found age=%f deficiency=%ld oldest=%s",
2743 age, age_deficiency, oldest_path);
2745 backlog_input_file= open_input_file(oldest_path);
2746 if (!backlog_input_file) {
2747 warn("backlog file %s vanished as we opened it", oldest_path);
2751 inputfile_reading_start(backlog_input_file);
2752 until_backlog_nextscan= -1;
2756 until_backlog_nextscan= age_deficiency / period_seconds;
2758 if (backlog_spontrescan_periods >= 0 &&
2759 until_backlog_nextscan > backlog_spontrescan_periods)
2760 until_backlog_nextscan= backlog_spontrescan_periods;
2762 debug("backlog scan: young age=%f deficiency=%ld nextscan=%d oldest=%s",
2763 age, age_deficiency, until_backlog_nextscan, oldest_path);
2770 /*---------- shutdown and signal handling ----------*/
2772 static void preterminate(void) {
2773 if (in_child) return;
2774 notice_processed(main_input_file,0,"feedfile","");
2775 notice_processed(flushing_input_file,0,"flushing file","");
2776 if (backlog_input_file)
2777 notice_processed(backlog_input_file,0, "backlog file ",
2778 backlog_input_file->path);
2781 static int signal_self_pipe[2];
2782 static sig_atomic_t terminate_sig_flag;
2784 static void defraise(int signo) {
2785 struct sigaction sa;
2786 memset(&sa,0,sizeof(sa));
2787 sa.sa_handler= SIG_DFL;
2788 xsigaction(signo,&sa);
2792 static void *sigarrived_event(oop_source *lp, int fd, oop_event e, void *u) {
2793 assert(fd=signal_self_pipe[0]);
2795 int r= read(signal_self_pipe[0], buf, sizeof(buf));
2796 if (r<0 && !isewouldblock(errno)) sysdie("failed to read signal self pipe");
2797 if (r==0) die("eof on signal self pipe");
2798 if (terminate_sig_flag) {
2800 notice("terminating (%s)", strsignal(terminate_sig_flag));
2801 defraise(terminate_sig_flag);
2804 return OOP_CONTINUE;
2807 static void sigarrived_handler(int signum) {
2810 case SIGINT: case SIGTERM:
2811 if (!terminate_sig_flag) terminate_sig_flag= signum;
2816 write(signal_self_pipe[1],&x,1);
2819 static void init_signals(void) {
2820 if (signal(SIGPIPE, SIG_IGN) == SIG_ERR)
2821 sysdie("could not ignore SIGPIPE");
2823 if (pipe(signal_self_pipe)) sysfatal("create self-pipe for signals");
2825 xsetnonblock(signal_self_pipe[0],1);
2826 xsetnonblock(signal_self_pipe[1],1);
2828 struct sigaction sa;
2829 memset(&sa,0,sizeof(sa));
2830 sa.sa_handler= sigarrived_handler;
2831 sa.sa_flags= SA_RESTART;
2832 xsigaction(SIGTERM,&sa);
2833 xsigaction(SIGINT,&sa);
2835 on_fd_read_except(signal_self_pipe[0], sigarrived_event);
2838 /*========== flushing the feed ==========*/
2840 static pid_t inndcomm_child;
2841 static int inndcomm_sentinel_fd;
2843 static void *inndcomm_event(oop_source *lp, int fd, oop_event e, void *u) {
2844 assert(inndcomm_child);
2845 assert(fd == inndcomm_sentinel_fd);
2846 int status= xwaitpid(&inndcomm_child, "inndcomm");
2849 cancel_fd_read_except(fd);
2850 xclose_perhaps(&fd, "inndcomm sentinel pipe",0);
2851 inndcomm_sentinel_fd= 0;
2853 assert(!flushing_input_file);
2855 if (WIFEXITED(status)) {
2856 switch (WEXITSTATUS(status)) {
2858 case INNDCOMMCHILD_ESTATUS_FAIL:
2861 case INNDCOMMCHILD_ESTATUS_NONESUCH:
2862 notice("feed has been dropped by innd, finishing up");
2863 flushing_input_file= main_input_file;
2864 tailing_queue_readable(flushing_input_file);
2865 /* we probably previously returned EAGAIN from our fake read method
2866 * when in fact we were at EOF, so signal another readable event
2867 * so we actually see the EOF */
2871 if (flushing_input_file) {
2872 SMS(DROPPING, 0, "feed dropped by innd, but must finish last flush");
2875 SMS(DROPPED, 0, "feed dropped by innd");
2876 search_backlog_file();
2878 return OOP_CONTINUE;
2882 flushing_input_file= main_input_file;
2883 tailing_queue_readable(flushing_input_file);
2885 main_input_file= open_input_file(feedfile);
2886 if (!main_input_file)
2887 die("flush succeeded but feedfile %s does not exist!", feedfile);
2889 if (flushing_input_file) {
2890 SMS(SEPARATED, spontaneous_flush_periods, "recovery flush complete");
2893 SMS(NORMAL, spontaneous_flush_periods, "flush complete");
2895 return OOP_CONTINUE;
2898 goto unexpected_exitstatus;
2901 } else if (WIFSIGNALED(status) && WTERMSIG(status) == SIGALRM) {
2902 warn("flush timed out trying to talk to innd");
2905 unexpected_exitstatus:
2906 report_child_status("inndcomm child", status);
2910 SMS(FLUSHFAILED, flushfail_retry_periods, "flush failed, will retry");
2911 return OOP_CONTINUE;
2914 static void inndcommfail(const char *what) {
2915 syswarn("error communicating with innd: %s failed: %s", what, ICCfailure);
2916 exit(INNDCOMMCHILD_ESTATUS_FAIL);
2919 void spawn_inndcomm_flush(const char *why) { /* Moved => Flushing */
2922 notice("flushing %s",why);
2924 assert(sms==sm_NORMAL || sms==sm_FLUSHFAILED);
2925 assert(!inndcomm_child);
2926 assert(!inndcomm_sentinel_fd);
2928 if (pipe(pipefds)) sysfatal("create pipe for inndcomm child sentinel");
2930 inndcomm_child= xfork("inndcomm child");
2932 if (!inndcomm_child) {
2933 const char *flushargv[2]= { sitename, 0 };
2937 xclose(pipefds[0], "(in child) inndcomm sentinel parent's end",0);
2938 /* parent spots the autoclose of pipefds[1] when we die or exit */
2940 if (simulate_flush>=0) {
2941 warn("SIMULATING flush child status %d", simulate_flush);
2942 if (simulate_flush>128) raise(simulate_flush-128);
2943 else exit(simulate_flush);
2946 alarm(inndcomm_flush_timeout);
2947 r= ICCopen(); if (r) inndcommfail("connect");
2948 r= ICCcommand('f',flushargv,&reply); if (r<0) inndcommfail("transmit");
2949 if (!r) exit(0); /* yay! */
2951 if (!strcmp(reply, "1 No such site")) exit(INNDCOMMCHILD_ESTATUS_NONESUCH);
2952 syswarn("innd ctlinnd flush failed: innd said %s", reply);
2953 exit(INNDCOMMCHILD_ESTATUS_FAIL);
2958 xclose(pipefds[1], "inndcomm sentinel child's end",0);
2959 inndcomm_sentinel_fd= pipefds[0];
2960 assert(inndcomm_sentinel_fd);
2961 on_fd_read_except(inndcomm_sentinel_fd, inndcomm_event);
2963 SMS(FLUSHING, 0, why);
2966 /*========== main program ==========*/
2968 static void postfork_inputfile(InputFile *ipf) {
2970 xclose(ipf->fd, "(in child) input file ", ipf->path);
2973 static void postfork_stdio(FILE *f, const char *what, const char *what2) {
2974 /* we have no stdio streams that are buffered long-term */
2976 if (fclose(f)) sysdie("(in child) close %s%s", what, what2?what2:0);
2979 static void postfork(void) {
2982 if (signal(SIGPIPE, SIG_DFL) == SIG_ERR)
2983 sysdie("(in child) failed to reset SIGPIPE");
2985 postfork_inputfile(main_input_file);
2986 postfork_inputfile(flushing_input_file);
2989 for (conn=LIST_HEAD(conns); conn; conn=LIST_NEXT(conn))
2990 conn_closefd(conn,"(in child) ");
2992 postfork_stdio(defer, "defer file ", path_defer);
2995 typedef struct Every Every;
2997 struct timeval interval;
3002 static void every_schedule(Every *e, struct timeval base);
3004 static void *every_happens(oop_source *lp, struct timeval base, void *e_v) {
3007 if (!e->fixed_rate) xgettimeofday(&base);
3008 every_schedule(e, base);
3009 return OOP_CONTINUE;
3012 static void every_schedule(Every *e, struct timeval base) {
3013 struct timeval when;
3014 timeradd(&base, &e->interval, &when);
3015 loop->on_time(loop, when, every_happens, e);
3018 static void every(int interval, int fixed_rate, void (*f)(void)) {
3019 Every *e= xmalloc(sizeof(*e));
3020 e->interval.tv_sec= interval;
3021 e->interval.tv_usec= 0;
3022 e->fixed_rate= fixed_rate;
3025 xgettimeofday(&now);
3026 every_schedule(e, now);
3029 static void filepoll(void) {
3030 filemon_callback(main_input_file);
3031 filemon_callback(flushing_input_file);
3034 static char *debug_report_ipf(InputFile *ipf) {
3035 if (!ipf) return xasprintf("none");
3037 const char *slash= strrchr(ipf->path,'/');
3038 const char *path= slash ? slash+1 : ipf->path;
3040 return xasprintf("%p/%s:ip=%ld,off=%ld,fd=%d%s%s",
3042 ipf->inprogress, (long)ipf->offset,
3044 ipf->rd ? "" : ",!rd",
3045 ipf->skippinglong ? "*skiplong" : "");
3048 static void period(void) {
3049 char *dipf_main= debug_report_ipf(main_input_file);
3050 char *dipf_flushing= debug_report_ipf(flushing_input_file);
3051 char *dipf_backlog= debug_report_ipf(backlog_input_file);
3054 " sms=%s[%d] conns=%d queue=%d until_connect=%d"
3055 " input_files main:%s flushing:%s backlog:%s"
3056 " children connecting=%ld inndcomm=%ld"
3058 sms_names[sms], sm_period_counter,
3059 conns.count, queue.count, until_connect,
3060 dipf_main, dipf_flushing, dipf_backlog,
3061 (long)connecting_child, (long)inndcomm_child
3065 free(dipf_flushing);
3068 if (until_connect) until_connect--;
3070 poll_backlog_file();
3071 if (!backlog_input_file) close_defer(); /* want to start on a new backlog */
3072 statemc_period_poll();
3073 check_assign_articles();
3078 /*========== dumping state ==========*/
3080 static void dump_article_list(FILE *f, const ControlCommand *c,
3081 const ArticleList *al) {
3082 fprintf(f, " count=%d\n", al->count);
3083 if (!c->xval) return;
3085 int i; Article *art;
3086 for (i=0, art=LIST_HEAD(*al); art; i++, art=LIST_NEXT(art)) {
3087 fprintf(f," #%05d %-11s", i, artstate_names[art->state]);
3088 DUMPV("%p", art->,ipf);
3089 DUMPV("%d", art->,missing);
3090 DUMPV("%lu", (unsigned long)art->,offset);
3091 DUMPV("%d", art->,blanklen);
3092 DUMPV("%d", art->,midlen);
3093 fprintf(f, " %s %s\n", TokenToText(art->token), art->messageid);
3097 static void dump_input_file(FILE *f, InputFile *ipf, const char *wh) {
3098 char *dipf= debug_report_ipf(ipf);
3099 fprintf(f,"input %s %s", wh, dipf);
3103 DUMPV("%d", ipf->,readcount_ok);
3104 DUMPV("%d", ipf->,readcount_blank);
3105 DUMPV("%d", ipf->,readcount_err);
3109 ArtState state; const char *const *statename;
3110 for (state=0, statename=artstate_names; *statename; state++,statename++) {
3111 #define RC_DUMP_FMT(x) " " #x "=%d"
3112 #define RC_DUMP_VAL(x) ,ipf->counts[state][RC_##x]
3113 fprintf(f,"input %s counts %-11s"
3114 RESULT_COUNTS(RC_DUMP_FMT,RC_DUMP_FMT) "\n",
3116 RESULT_COUNTS(RC_DUMP_VAL,RC_DUMP_VAL));
3123 fprintf(cc->out, "dumping state to %s\n", path_dump);
3124 FILE *f= fopen(path_dump, "w");
3125 if (!f) { fprintf(cc->out, "failed: open: %s\n", strerror(errno)); return; }
3127 fprintf(f,"general");
3128 DUMPV("%s", sms_names,[sms]);
3129 DUMPV("%d", ,sm_period_counter);
3130 DUMPV("%ld", (long),self_pid);
3131 DUMPV("%p", , defer);
3132 DUMPV("%d", , until_connect);
3133 DUMPV("%d", , until_backlog_nextscan);
3134 DUMPV("%d", , simulate_flush);
3135 fprintf(f,"\nnocheck");
3136 DUMPV("%#.10f", , accept_proportion);
3137 DUMPV("%d", , nocheck);
3138 DUMPV("%d", , nocheck_reported);
3141 fprintf(f,"special");
3142 DUMPV("%ld", (long),connecting_child);
3143 DUMPV("%d", , connecting_fdpass_sock);
3144 DUMPV("%d", , control_master);
3147 fprintf(f,"filemon ");
3148 filemon_method_dump_info(f);
3150 dump_input_file(f, main_input_file, "main" );
3151 dump_input_file(f, flushing_input_file, "flushing");
3152 dump_input_file(f, backlog_input_file, "backlog" );
3154 fprintf(f,"conns count=%d\n", conns.count);
3157 for (conn=LIST_HEAD(conns); conn; conn=LIST_NEXT(conn)) {
3159 fprintf(f,"C%d",conn->fd);
3160 DUMPV("%p",conn->,rd); DUMPV("%d",conn->,max_queue);
3161 DUMPV("%d",conn->,stream); DUMPV("%d",conn->,quitting);
3162 DUMPV("%d",conn->,since_activity);
3165 fprintf(f,"C%d waiting", conn->fd); dump_article_list(f,c,&conn->waiting);
3166 fprintf(f,"C%d priority",conn->fd); dump_article_list(f,c,&conn->priority);
3167 fprintf(f,"C%d sent", conn->fd); dump_article_list(f,c,&conn->sent);
3169 fprintf(f,"C%d xmit xmitu=%d\n", conn->fd, conn->xmitu);
3170 for (i=0; i<conn->xmitu; i++) {
3171 const struct iovec *iv= &conn->xmit[i];
3172 const XmitDetails *xd= &conn->xmitd[i];
3177 diff= xd->info.malloc_tofree - (char*)iv->iov_base;
3178 dinfo= xasprintf("M%5ld", diff);
3181 dinfo= xasprintf("Const");
3184 dinfo= xasprintf("A%p", xd->info.sm_art);
3189 fprintf(f," #%03d %-11s l=%d %s\n", i, dinfo, iv->iov_len,
3190 sanitise(iv->iov_base, iv->iov_len));
3195 fprintf(f,"queue"); dump_article_list(f,c,&queue);
3198 DUMPV("%s", , path_lock);
3199 DUMPV("%s", , path_flushing);
3200 DUMPV("%s", , path_defer);
3201 DUMPV("%s", , path_control);
3202 DUMPV("%s", , path_dump);
3203 DUMPV("%s", , globpat_backlog);
3206 if (!!ferror(f) + !!fclose(f)) {
3207 fprintf(cc->out, "failed: write: %s\n", strerror(errno));
3212 /*========== option parsing ==========*/
3214 static void vbadusage(const char *fmt, va_list al) NORET_PRINTF(1,0);
3215 static void vbadusage(const char *fmt, va_list al) {
3216 char *m= xvasprintf(fmt,al);
3217 fprintf(stderr, "bad usage: %s\n"
3218 "say --help for help, or read the manpage\n",
3221 syslog(LOG_CRIT,"innduct: invoked with bad usage: %s",m);
3225 /*---------- generic option parser ----------*/
3227 static void badusage(const char *fmt, ...) NORET_PRINTF(1,2);
3228 static void badusage(const char *fmt, ...) {
3235 of_seconds= 001000u,
3236 of_boolean= 002000u,
3239 typedef struct Option Option;
3240 typedef void OptionParser(const Option*, const char *val);
3244 const char *lng, *formarg;
3250 static void parse_options(const Option *options, char ***argvp) {
3251 /* on return *argvp is first non-option arg; argc is not updated */
3254 const char *arg= *++(*argvp);
3256 if (*arg != '-') break;
3257 if (!strcmp(arg,"--")) { arg= *++(*argvp); break; }
3259 while ((a= *++arg)) {
3263 char *equals= strchr(arg,'=');
3264 int len= equals ? (equals - arg) : strlen(arg);
3265 for (o=options; o->shrt || o->lng; o++)
3266 if (strlen(o->lng) == len && !memcmp(o->lng,arg,len))
3268 badusage("unknown long option --%s",arg);
3271 if (equals) badusage("option --%s does not take a value",o->lng);
3273 } else if (equals) {
3277 if (!arg) badusage("option --%s needs a value for %s",
3278 o->lng, o->formarg);
3281 break; /* eaten the whole argument now */
3283 for (o=options; o->shrt || o->lng; o++)
3286 badusage("unknown short option -%c",a);
3293 if (!arg) badusage("option -%c needs a value for %s",
3294 o->shrt, o->formarg);
3297 break; /* eaten the whole argument now */
3303 #define DELIMPERHAPS(delim,str) (str) ? (delim) : "", (str) ? (str) : ""
3305 static void print_options(const Option *options, FILE *f) {
3307 for (o=options; o->shrt || o->lng; o++) {
3308 char shrt[2] = { o->shrt, 0 };
3309 char *optspec= xasprintf("%s%s%s%s%s",
3310 o->shrt ? "-" : "", shrt,
3311 o->shrt && o->lng ? "|" : "",
3312 DELIMPERHAPS("--", o->lng));
3313 fprintf(f, " %s%s%s\n", optspec, DELIMPERHAPS(" ", o->formarg));
3318 /*---------- specific option types ----------*/
3320 static void op_integer(const Option *o, const char *val) {
3323 unsigned long ul= strtoul(val,&ep,10);
3324 if (*ep || ep==val || errno || ul>INT_MAX)
3325 badusage("bad integer value for %s",o->lng);
3326 int *store= o->store;
3330 static void op_double(const Option *o, const char *val) {
3331 int *store= o->store;
3334 *store= strtod(val, &ep);
3335 if (*ep || ep==val || errno)
3336 badusage("bad floating point value for %s",o->lng);
3339 static void op_string(const Option *o, const char *val) {
3340 const char **store= o->store;
3344 static void op_seconds(const Option *o, const char *val) {
3345 int *store= o->store;
3349 double v= strtod(val,&ep);
3350 if (ep==val) badusage("bad time/duration value for %s",o->lng);
3352 if (!*ep || !strcmp(ep,"s") || !strcmp(ep,"sec")) unit= 1;
3353 else if (!strcmp(ep,"m") || !strcmp(ep,"min")) unit= 60;
3354 else if (!strcmp(ep,"h") || !strcmp(ep,"hour")) unit= 3600;
3355 else if (!strcmp(ep,"d") || !strcmp(ep,"day")) unit= 86400;
3356 else if (!strcmp(ep,"das")) unit= 10;
3357 else if (!strcmp(ep,"hs")) unit= 100;
3358 else if (!strcmp(ep,"ks")) unit= 1000;
3359 else if (!strcmp(ep,"Ms")) unit= 1000000;
3360 else badusage("bad units %s for time/duration value for %s",ep,o->lng);
3364 if (v > INT_MAX) badusage("time/duration value for %s out of range",o->lng);
3368 static void op_setint(const Option *o, const char *val) {
3369 int *store= o->store;
3373 /*---------- specific options ----------*/
3375 static void help(const Option *o, const char *val);
3377 static const Option innduct_options[]= {
3378 {'f',"feedfile", "F", &feedfile, op_string },
3379 {'q',"quiet-multiple", 0, &quiet_multiple, op_setint, 1 },
3380 {0,"no-daemon", 0, &become_daemon, op_setint, 0 },
3381 {0,"no-streaming", 0, &try_stream, op_setint, 0 },
3382 {0,"no-filemon", 0, &try_filemon, op_setint, 0 },
3383 {'C',"inndconf", "F", &inndconffile, op_string },
3384 {'P',"port", "PORT", &port, op_integer },
3385 {0,"ctrl-sock-dir", 0, &realsockdir, op_string },
3386 {0,"help", 0, 0, help },
3388 {0,"max-connections", "N", &max_connections, op_integer },
3389 {0,"max-queue-per-conn", "N", &max_queue_per_conn, op_integer },
3390 {0,"feedfile-flush-size","BYTES", &target_max_feedfile_size, op_integer },
3391 {0,"period-interval", "TIME", &period_seconds, op_seconds },
3393 {0,"connection-timeout", "TIME", &connection_setup_timeout, op_seconds },
3394 {0,"stuck-flush-timeout", "TIME", &inndcomm_flush_timeout, op_seconds },
3395 {0,"feedfile-poll", "TIME", &filepoll_seconds, op_seconds },
3397 {0,"no-check-proportion", "PERCENT", &nocheck_thresh, op_double },
3398 {0,"no-check-response-time","ARTICLES", &nocheck_decay, op_double },
3400 {0,"reconnect-interval", "PERIOD", &reconnect_delay_periods, op_seconds },
3401 {0,"flush-retry-interval", "PERIOD", &flushfail_retry_periods, op_seconds },
3402 {0,"earliest-deferred-retry","PERIOD", &backlog_retry_minperiods, op_seconds },
3403 {0,"backlog-rescan-interval","PERIOD",&backlog_spontrescan_periods,op_seconds},
3404 {0,"max-flush-interval", "PERIOD", &spontaneous_flush_periods,op_seconds },
3405 {0,"idle-timeout", "PERIOD", &need_activity_periods, op_seconds },
3407 {0,"max-bad-input-data-ratio","PERCENT", &max_bad_data_ratio, op_double },
3408 {0,"max-bad-input-data-init", "PERCENT", &max_bad_data_initial, op_integer },
3413 static void printusage(FILE *f) {
3414 fputs("usage: innduct [options] site [fqdn]\n"
3415 "available options are:\n", f);
3416 print_options(innduct_options, f);
3419 static void help(const Option *o, const char *val) {
3421 if (ferror(stdout) || fflush(stdout)) {
3422 perror("innduct: writing help");
3428 static void convert_to_periods_rndup(int *store) {
3429 *store += period_seconds-1;
3430 *store /= period_seconds;
3433 int main(int argc, char **argv) {
3439 parse_options(innduct_options, &argv);
3444 if (!sitename) badusage("need site name argument");
3445 remote_host= *argv++;
3446 if (*argv) badusage("too many non-option arguments");
3450 int r= innconf_read(inndconffile);
3451 if (!r) badusage("could not read inn.conf (more info on stderr)");
3453 if (!remote_host) remote_host= sitename;
3455 if (nocheck_thresh < 0 || nocheck_thresh > 100)
3456 badusage("nocheck threshold percentage must be between 0..100");
3457 nocheck_thresh *= 0.01;
3459 if (nocheck_decay < 0.1)
3460 badusage("nocheck decay articles must be at least 0.1");
3461 nocheck_decay= pow(0.5, 1.0/nocheck_decay);
3463 convert_to_periods_rndup(&reconnect_delay_periods);
3464 convert_to_periods_rndup(&flushfail_retry_periods);
3465 convert_to_periods_rndup(&backlog_retry_minperiods);
3466 convert_to_periods_rndup(&backlog_spontrescan_periods);
3467 convert_to_periods_rndup(&spontaneous_flush_periods);
3468 convert_to_periods_rndup(&need_activity_periods);
3470 if (max_bad_data_ratio < 0 || max_bad_data_ratio > 100)
3471 badusage("bad input data ratio must be between 0..100");
3472 max_bad_data_ratio *= 0.01;
3475 feedfile= xasprintf("%s/%s",innconf->pathoutgoing,sitename);
3476 } else if (!feedfile[0]) {
3477 badusage("feed filename must be nonempty");
3478 } else if (feedfile[strlen(feedfile)-1]=='/') {
3479 feedfile= xasprintf("%s%s",feedfile,sitename);
3482 const char *feedfile_forbidden= "?*[~#";
3484 while ((c= *feedfile_forbidden++))
3485 if (strchr(feedfile, c))
3486 badusage("feed filename may not contain metacharacter %c",c);
3490 path_lock= xasprintf("%s_lock", feedfile);
3491 path_flushing= xasprintf("%s_flushing", feedfile);
3492 path_defer= xasprintf("%s_defer", feedfile);
3493 path_control= xasprintf("%s_control", feedfile);
3494 path_dump= xasprintf("%s_dump", feedfile);
3495 globpat_backlog= xasprintf("%s_backlog*", feedfile);
3497 oop_source_sys *sysloop= oop_sys_new();
3498 if (!sysloop) sysdie("could not create liboop event loop");
3499 loop= (oop_source*)sysloop;
3504 if (become_daemon) {
3506 for (i=3; i<255; i++)
3507 /* do this now before we open syslog, etc. */
3509 openlog("innduct",LOG_NDELAY|LOG_PID,LOG_NEWS);
3511 int null= open("/dev/null",O_RDWR);
3512 if (null<0) sysfatal("failed to open /dev/null");
3516 xclose(null, "/dev/null original fd",0);
3518 pid_t child1= xfork("daemonise first fork");
3519 if (child1) _exit(0);
3521 pid_t sid= setsid();
3522 if (sid != child1) sysfatal("setsid failed");
3524 pid_t child2= xfork("daemonise second fork");
3525 if (child2) _exit(0);
3529 if (self_pid==-1) sysdie("getpid");
3544 notice("filemon: suppressed by command line option, polling");
3546 filemon_ok= filemon_method_init();
3548 warn("filemon: no file monitoring available, polling");
3551 every(filepoll_seconds,0,filepoll);
3553 every(period_seconds,1,period);
3559 void *run= oop_sys_run(sysloop);
3560 assert(run == OOP_ERROR);
3561 sysdie("event loop failed");