*
*/
+/*============================== PROGRAM ==============================*/
+
+#define _GNU_SOURCE
+
+#include "config.h"
+#include "storage.h"
+#include "nntp.h"
+
+#include <sys/uio.h>
+#include <sys/types.h>
+#include <sys/wait.h>
+#include <sys/stat.h>
+#include <sys/socket.h>
+#include <unistd.h>
+#include <string.h>
+#include <signal.h>
+#include <stdio.h>
+#include <errno.h>
+#include <syslog.h>
+#include <fcntl.h>
+
+#include <oop.h>
+#include <oop-read.h>
/*----- general definitions, probably best not changed -----*/
#define INNDCOMMCHILD_ESTATUS_FAIL 6
#define INNDCOMMCHILD_ESTATUS_NONESUCH 7
-
-/*----- configuration options -----*/
-
-static char *sitename, *feedfile;
-static int max_connections=10, max_queue_per_conn=200;
-static int connection_setup_timeout=200, port=119, try_stream=1;
-static int inndcomm_flush_timeout=100, quiet_if_locked=0;
-static const char *remote_host;
-static int reconnect_delay_periods, flushfail_retry_periods, open_wait_periods;
-static int backlog_retry_minperiods, backlog_spontaneous_rescan_periods;
-static const char *inndconffile;
-
-static double accept_proportion;
-static double nocheck_thresh_pct= 95.0;
-static double nocheck_thresh; /* computed in main from _pct */
-static double nocheck_decay_articles= 100; /* converted to _decay */
-static double nocheck_decay; /* computed in main from _articles */
-static int nocheck, nocheck_reported;
-
-
/*----- doubly linked lists -----*/
-#define ISNODE(T) T *next, *back;
-#define LIST(T) struct { T *head, *tail, *tailpred; int count; }
+#define ISNODE(T) struct { T *succ, *pred; } node
+#define DEFLIST(T) typedef struct { T *head, *tail, *tp; int count; } T##List
-#define NODE(n) ((struct node*)&(n)->head)
+#define NODE(n) ((struct node*)&(n)->node)
#define LIST_ADDHEAD(l,n) \
(list_addhead((struct list*)&(l), NODE((n))), (void)(l).count++)
#define LIST_INSERT(l,n,pred) \
(list_insert((struct list*)&(l), NODE((n)), NODE((pred))), (void)(l).count++)
+/*----- type predeclarations -----*/
+
+typedef struct Conn Conn;
+typedef struct Article Article;
+typedef enum StateMachineState StateMachineState;
+
+DEFLIST(Conn);
+DEFLIST(Article);
+
+/*----- function predeclarations -----*/
+
+static void conn_check_work(Conn *conn);
+
+static int filemon_init(void);
+static void filemon_setfile(int mainfeed_fd, const char *mainfeed_path);
+static void filemon_callback(void);
+
+static void conn_assign_one_article(ConnList *connlist, Conn **last_assigned);
+static void statemc_setstate(StateMachineState newsms, int periods,
+ const char *forlog, const char *why);
+static void check_master_queue(void);
+
+/*----- configuration options -----*/
+
+static char *sitename, *feedfile;
+static const char *remote_host;
+static int quiet_multiple=0, become_daemon=1;
+
+static int max_connections=10, max_queue_per_conn=200;
+
+static int connection_setup_timeout=200, port=119, try_stream=1;
+static int inndcomm_flush_timeout=100;
+static int reconnect_delay_periods, flushfail_retry_periods, open_wait_periods;
+static int backlog_retry_minperiods, backlog_spontaneous_rescan_periods;
+static const char *inndconffile;
+
+static double accept_proportion;
+static double nocheck_thresh_pct= 95.0;
+static double nocheck_thresh; /* computed in main from _pct */
+static double nocheck_decay_articles= 100; /* converted to _decay */
+static double nocheck_decay; /* computed in main from _articles */
+static int nocheck, nocheck_reported;
+
/*----- statistics -----*/
, counts[art_Unsolicited] x
typedef enum {
-#define RC_INDEX(x) RCI_##x
+#define RC_INDEX(x) RCI_##x,
RESULT_COUNTS(RC_INDEX, RC_INDEX)
RCI_max
} ResultCountIndex;
#define CONNIOVS 128
typedef enum {
- xk_Malloc, xk_Const, xk_Artdata;
+ xk_Malloc, xk_Const, xk_Artdata
} XmitKind;
typedef struct {
/*----- core operational data structure types -----*/
-struct Article {
- ArtState state;
- int midlen;
- InputFile *ipf;
- TOKEN token;
- off_t offset;
- int blanklen;
- char messageid[1];
-};
-
typedef struct InputFile {
/* This is an instance of struct oop_readable */
struct oop_readable readable; /* first */
char path[];
} InputFile;
+struct Article {
+ ISNODE(Article);
+ ArtState state;
+ int midlen;
+ InputFile *ipf;
+ TOKEN token;
+ off_t offset;
+ int blanklen;
+ char messageid[1];
+};
+
#define SMS_LIST(X) \
X(NORMAL) \
X(FLUSHING) \
X(DROPPING) \
X(DROPPED)
-typedef enum {
+enum StateMachineState {
#define SMS_DEF_ENUM(s) sm_##s,
SMS_LIST(SMS_DEF_ENUM)
-} StateMachineState;
+};
static const char *sms_names[]= {
#define SMS_DEF_NAME(s) #s ,
struct Conn {
ISNODE(Conn);
int fd, max_queue, stream;
- LIST(Article) queue; /* not yet told peer, or CHECK said send it */
- LIST(Article) sent; /* offered/transmitted - in xmit or waiting reply */
+ ArticleList queue; /* not yet told peer, or CHECK said send it */
+ ArticleList sent; /* offered/transmitted - in xmit or waiting reply */
struct iovec xmit[CONNIOVS];
XmitDetails xmitd[CONNIOVS];
int xmitu;
/*----- operational variables -----*/
-static int nconns;
-static LIST(Conn) idle, working, full;
-static LIST(Article) *queue;
+static oop_source *loop;
+
+static int nconns, until_connect;
+static ConnList idle, working, full;
+static ArticleList queue;
static char *path_lock, *path_flushing, *path_defer;
static int sm_period_counter;
-/*----- function predeclarations -----*/
+/*========== logging ==========*/
-static void conn_check_work(Conn *conn);
+static void logcore(int sysloglevel, const char *fmt, ...)
+ __attribute__((__format__(printf,2,3)));
+static void logcore(int sysloglevel, const char *fmt, ...) {
+ va_list al;
+ va_start(al,fmt);
+ if (become_daemon) {
+ vsyslog(sysloglevel,fmt,al);
+ } else {
+ vfprintf(stderr,fmt,al);
+ putc('\n',stderr);
+ }
+ va_end(al);
+}
-static int filemon_init(void);
-static void filemon_setfile(int mainfeed_fd, const char *mainfeed_path);
-static void filemon_callback(void);
+static void logv(int sysloglevel, const char *pfx, int errnoval,
+ int exitstatus, const char *fmt, va_list al)
+ __attribute__((__format__(printf,5,0)));
+static void logv(int sysloglevel, const char *pfx, int errnoval,
+ int exitstatus, const char *fmt, va_list al) {
+ char msgbuf[256];
+ vsnprintf(msgbuf,sizeof(msgbuf), fmt,al);
+ msgbuf[sizeof(msgbuf)-1]= 0;
+
+ if (sysloglevel >= LOG_ERR && (errnoval==EACCES || errnoval==EPERM))
+ sysloglevel= LOG_ERR; /* run by wrong user, probably */
+
+ logcore(sysloglevel, "<%s>%s: %s%s%s",
+ sitename, pfx, msgbuf,
+ errnoval>=0 ? ": " : "",
+ errnoval>=0 ? strerror(errnoval) : "");
+}
+
+#define logwrap(fn, pfx, sysloglevel, err, estatus) \
+ static void fn(const char *fmt, ...) \
+ __attribute__((__format__(printf,1,2))); \
+ static void fn(const char *fmt, ...) { \
+ va_list al; \
+ va_start(al,fmt); \
+ logv(sysloglevel, pfx, err, estatus, fmt, al); \
+ }
+
+logwrap(sysdie, " critical", LOG_CRIT, errno, 16);
+logwrap(die, " critical", LOG_CRIT, -1, 16);
+
+logwrap(sysfatal, " fatal", LOG_ERR, errno, 12);
+logwrap(fatal, " fatal", LOG_ERR, -1, 12);
+
+logwrap(syswarn, " warning", LOG_WARNING, errno, 0);
+logwrap(warn, " warning", LOG_WARNING, -1, 0);
+
+logwrap(notice, "", LOG_NOTICE, -1, 0);
+logwrap(info, " info", LOG_INFO, -1, 0);
+logwrap(debug, " debug", LOG_DEBUG, -1, 0);
-static void statemc_setstate(StateMachineState newsms, int periods,
- const char *forlog, const char *why);
/*========== utility functions etc. ==========*/
static void perhaps_close(int *fd) { if (*fd) { close(*fd); fd=0; } }
+static void *xmalloc(size_t sz) {
+ if (!sz) return 0;
+ void *r= malloc(sz);
+ if (r) return r;
+ sysdie("malloc (%ld bytes) failed", (unsigned long)sz);
+}
+
static pid_t xfork(const char *what) {
pid_t child;
static int xwaitpid(pid_t *pid, const char *what) {
int status;
- r= kill(*pid, SIGKILL);
+ int r= kill(*pid, SIGKILL);
if (r) sysdie("cannot kill %s child", what);
pid_t got= waitpid(*pid, &status, WNOHANG);
}
static void xfstat(int fd, struct stat *stab_r, const char *what) {
- int r= fstab(path, stab);
- if (r) sysdie("could not fstat %s %s", what, path);
+ int r= fstab(fd, stab_r);
+ if (r) sysdie("could not fstat %s", what);
}
-static void xfstat_isreg(int fd, struct stat *stab_r, const char *what) {
+static void xfstat_isreg(int fd, struct stat *stab_r,
+ const char *path, const char *what) {
xfstat(fd, stab_r, what);
- check_isreg(stab, path, what);
+ check_isreg(stab_r, path, what);
}
static void xlstat_isreg(const char *path, struct stat *stab,
- int *enoent_r /* 0 means ENOENT is fatal */
+ int *enoent_r /* 0 means ENOENT is fatal */,
const char *what) {
int r= lstat(path, stab);
if (r) {
check_isreg(stab, path, what);
}
+static void setnonblock(int fd, int nonblocking) {
+ int r= fcntl(fd, F_GETFL); if (r<0) sysdie("setnonblocking fcntl F_GETFL");
+ if (nonblocking) r |= O_NONBLOCK;
+ else r &= ~O_NONBLOCK;
+ r= fcntl(fd, F_SETFL, r); if (r<0) sysdie("setnonblocking fcntl F_SETFL");
+}
+
static int samefile(const struct stat *a, const struct stat *b) {
assert(S_ISREG(a->st_mode));
assert(S_ISREG(b->st_mode));
a->st_dev == b->st_dev);
}
-/*========== logging ==========*/
-
-static void logcore(int sysloglevel, const char *fmt, ...)
- __attribute__((printf,2,3))
-static void logcore(int sysloglevel, const char *fmt, ...) {
- va_list al;
- va_start(al,fmt);
- if (become_daemon) {
- vsyslog(sysloglevel,fmt,al);
- } else {
- vfprintf(stderr,fmt,al);
- putc('\n',stderr);
- }
- va_end(al);
-}
-
-static void logv(int sysloglevel, const char *pfx, int errnoval,
- int exitstatus, const char *fmt, va_list al)
- __attribute__((printf,4,0))
-static void logv(int sysloglevel, const char *pfx, int errnoval,
- int exitstatus, const char *fmt, va_list al) {
- char msgbuf[256];
- vsnprintf(msgbuf,sizeof(msgbuf), fmt,al);
- msgbuf[sizeof(msgbuf)-1]= 0;
-
- if (sysloglevel >= LOG_ERR && (errnoval==EACCES || errnoval==EPERM))
- sysloglevel= LOG_ERR; /* run by wrong user, probably */
-
- logcore(sysloglevel, "<%s>%s: %s%s%s",
- sitename, pfx, msgbuf,
- errnoval>=0 ? ": " : "",
- errnoval>=0 ? strerror(errnoval) : "");
-}
-
-#define logwrap(fn, pfx, sysloglevel, errno, estatus) \
- static void fn(const char *fmt, ...) \
- __attribute__((printf,1,2)); \
- static void fn(const char *fmt, ...) { \
- va_list al; \
- va_start(al,fmt); \
- logv(sysloglevel, pfx, errno, estatus, fmt, al); \
- }
-
-logwrap(sysdie, " critical", LOG_CRIT, errno, 16);
-logwrap(die, " critical", LOG_CRIT, -1, 16);
-
-logwrap(sysfatal, " fatal", LOG_ERR, errno, 12);
-logwrap(fatal, " fatal", LOG_ERR, -1, 12);
-
-logwrap(syswarn, " warning", LOG_WARN, errno, 0);
-logwrap(warn, " warning", LOG_WARN, -1, 0);
-
-logwrap(notice, "", LOG_NOTICE, -1, 0);
-logwrap(info, " info", LOG_INFO, -1, 0);
-logwrap(debug, " debug", LOG_DEBUG, -1, 0);
-
-
/*========== making new connections ==========*/
static int connecting_sockets[2]= {-1,-1};
perhaps_close(&connecting_sockets[1]);
if (connecting_child) {
- r= kill(connecting_child, SIGTERM);
+ int r= kill(connecting_child, SIGTERM);
if (r) syswarn("failed to kill connecting child");
int status= xwaitpid(&connecting_child, "connect");
conn= xmalloc(sizeof(*conn));
memset(conn,0,sizeof(*conn));
- DECL_MSG_CMSG(msg);
+ PREP_DECL_MSG_CMSG(msg);
struct cmsghdr *h= 0;
ssize_t rs= recvmsg(fd, &msg, MSG_DONTWAIT);
if (rs >= 0) h= CMSG_FIRSTHDR(&msg);
assert(got==connecting_child);
connecting_child= 0;
if (WIFEXITED(status) &&
- (WEXITSTATUS(status) != 0
+ (WEXITSTATUS(status) != 0 &&
WEXITSTATUS(status) != CONNCHILD_ESTATUS_STREAM &&
WEXITSTATUS(status) != CONNCHILD_ESTATUS_NOSTREAM)) {
/* child already reported the problem */
- } else if (WIFSIGNALED(status) && WTERMSIG(status) == SIGALARM) {
+ } else if (WIFSIGNALED(status) && WTERMSIG(status) == SIGALRM) {
warn("connect: connection attempt timed out");
} else if (!WIFEXITED(status)) {
report_child_status("connect", status);
/* child is still running apparently, report the socket problem */
if (rs < 0)
syswarn("connect: read from child socket failed");
- else if (e == OOP_EXCEPTIONN)
+ else if (e == OOP_EXCEPTION)
warn("connect: unexpected exception on child socket");
else
warn("connect: unexpected EOF on child socket");
}
CHK(level, SOL_SOCKET);
CHK(type, SCM_RIGHTS);
- CHK(len, CMSG_LEN(sizeof(conn-b>fd)));
+ CHK(len, CMSG_LEN(sizeof(conn->fd)));
#undef CHK
- if (CMSG_NXTHDR,&msg,h) { die("connect: child sent many cmsgs"); goto x; }
+ if (CMSG_NXTHDR(&msg,h)) { die("connect: child sent many cmsgs"); goto x; }
memcpy(&conn->fd, CMSG_DATA(h), sizeof(conn->fd));
+ int status;
pid_t got= waitpid(connecting_child, &status, 0);
if (got==-1) sysdie("connect: real wait for child");
assert(got == connecting_child);
fatal("connect: child gave unexpected exit status %d", es);
}
- set nonblocking;
+ setnonblocking(conn->fd, 1);
/* Phew! */
LIST_ADDHEAD(idle, conn);
notice("starting connection attempt");
- r= socketpair(AF_UNIX, SOCK_STREAM, 0, connecting_sockets);
+ int r= socketpair(AF_UNIX, SOCK_STREAM, 0, connecting_sockets);
if (r) { syswarn("connect: cannot create socketpair for child"); goto x; }
connecting_child= xfork("connection");
fatal("connect: response to MODE STREAM is too long: %.100s...",
remote_host, buf);
}
- l--; if (l>0 && buf[1-]=='\r') l--;
+ l--; if (l>0 && buf[l-1]=='\r') l--;
buf[l]= 0;
char *ep;
int rcode= strtoul(buf,&ep,10);
- if (ep != buf[3]) {
+ if (ep != &buf[3]) {
sanitise_inplace(buf);
fatal("connect: bad response to MODE STREAM: %.50s", buf);
}
if (r) sysdie("connect: close child socket in parent");
on_fd_read_except(connecting_sockets[0], connchild_event);
- return OOP_CONTINUE;
+ return;
x:
connect_attempt_discard();
conn_assign_one_article(&working, &last_assigned);
} else if (idle.head) {
conn_assign_one_article(&idle, &last_assigned);
- } else if (nconns < maxconns && queue.count >= max_queue_per_conn &&
- !connecting_child && !connect_delay) {
- connect_delay= reconnect_delay_periods;
+ } else if (nconns < max_connections && queue.count >= max_queue_per_conn &&
+ !connecting_child && !until_connect) {
+ until_connect= reconnect_delay_periods;
connect_start();
} else {
break;
conn_check_work(last_assigned);
}
-static void conn_assign_one_article(LIST(Conn) *connlist,
- Conn **last_assigned) {
+static void conn_assign_one_article(ConnList *connlist, Conn **last_assigned) {
Conn *conn= connlist->head;
LIST_REMOVE(*connlist, conn);
return conn->sent.count + conn->queue.count;
}
-static LIST(Conn) *conn_determine_right_list(Conn *conn) {
+static ConnList *conn_determine_right_list(Conn *conn) {
int inqueue= conn_total_queued_articles(conn);
assert(inqueue <= max_queue);
if (inqueue == 0) return &idle;
close(conn->fd);
free(conn);
- connect_delay= reconnect_delay_periods;
+ until_connect= reconnect_delay_periods;
check_master_queue();
}
r= fcntl(lockfd, F_SETLK, &fl);
if (r==-1) {
if (errno==EACCES || errno==EAGAIN) {
- if (quiet_if_locked) exit(0);
+ if (quiet_multiple) exit(0);
fatal("another duct holds the lockfile");
}
sysdie("fcntl F_SETLK lockfile %s", path_lock);
EVERY(period, {PERIOD_SECONDS,0}, {
debug("PERIOD"
- " sms=%s[%d] queue=%d connect_delay=%d"
+ " sms=%s[%d] queue=%d until_connect=%d"
" input_files" DEBUGF_IPF(main) DEBUGF_IPF(old) DEBUGF_FMT(flushing)
" conns idle=%d working=%d full=%d"
" children connecting=%ld inndcomm_child"
,
- sms_names[sms], sm_period_counter, queue.count, connect_delay,
+ sms_names[sms], sm_period_counter, queue.count, until_connect,
DEBUG_IPF(main), DEBUG_IPF(flushing), DEBUG_IPF(flushing),
idle.count, working.count, full.count,
(long)connecting_child, (long)inndcomm_child
);
- if (connect_delay) connect_delay--;
+ if (until_connect) until_connect--;
poll_backlog_file();
if (!backlog_input_file) close_defer(); /* want to start on a new backlog */
}
static const Option options[]= {
+{'f',"feedfile", &feedfile, op_string },
+{'q',"quiet-multiple", &quiet_multiple, op_booltrue, 1 },
+
{ 0, "max-connections", &max_connections op_integer },
+{ 0, "max-queue-per-conn", &max_queue_per_conn op_integer },
+
+
{ 0, "streaming", &try_stream, op_booltrue, 1 },
{ 0, "no-streaming", &try_stream, op_boolfalse, 1 },
-{'h',"host", &remote_host, op_string },
{'P',"port", &port op_integer },
{ 0, "inndconf", &inndconffile, op_string },
-{'f',"feedfile", &feedfile, op_string },
-{'q',"quiet-multiple", &quiet_if_locked, op_booltrue, 1 },
-{ 0, "no-quiet-multiple", &quiet_if_locked, op_boolfalse, 1 },
{'d',"daemon", &become_daemon, op_booltrue, 1 },
{ 0, "no-daemon", &become_daemon, op_boolfalse, 1 },
{ 0, "no-check-proportion", &nocheck_thresh_pct, op_double },
{ 0, "no-check-filter", &nocheck_decay_articles, op_double },
-{ 0, "max-queue-size", &max_queue_per_conn op_integer },
{ 0, "reconnect-interval", &reconnect_delay_periods, op_periods_rndup },
{ 0, "flush-retry-interval", &flushfail_retry_periods, op_periods_rndup },
{ 0, "connection-timeout", &connection_timeout, op_seconds },
if (!arg) badusage("need site name argument");
sitename= arg;
- if ((arg= *++argv)) {
- if (remote_host) badusage("must not specify -h and also host as argument");
+ if ((arg= *++argv))
remote_host= arg;
- }
if (*++argv) badusage("too many non-option arguments");
if (strchr(feedfile, c))
badusage("feed filename may not contain metacharacter %c",c);
+ loop= oop_sys_new();
+ if (!loop) sysdie("could not create liboop event loop");
+
if (signal(SIGPIPE, SIG_IGN) == SIG_ERR)
sysdie("could not ignore SIGPIPE");
~ian / inn-innduct.git / blobdiff