*
*/
+/*============================== PROGRAM ==============================*/
+
#define _GNU_SOURCE
+#include "inn/list.h"
#include "config.h"
#include "storage.h"
-#include "oop.h"
-#include "oop-read.h"
+#include "nntp.h"
+#include "libinn.h"
#include <sys/uio.h>
#include <sys/types.h>
#include <stdio.h>
#include <errno.h>
#include <syslog.h>
+#include <fcntl.h>
+#include <stdarg.h>
+#include <assert.h>
+#include <stdlib.h>
+
+#include <oop.h>
+#include <oop-read.h>
/*----- general definitions, probably best not changed -----*/
#define INNDCOMMCHILD_ESTATUS_FAIL 6
#define INNDCOMMCHILD_ESTATUS_NONESUCH 7
+/*----- doubly linked lists -----*/
+
+#define ISNODE(T) struct { T *succ, *pred; } node /* must be at start */
+#define DEFLIST(T) typedef struct { T *head, *tail, *tp; int count; } T##List
+
+#define NODE(n) (assert((void*)&(n)->node == &(n)), \
+ (struct node*)&(n)->node)
+
+#define LIST_CHECKCANHAVENODE(l,n) \
+ ((void)((n) == ((l).head))) /* just for the type check */
+
+#define LIST_ADDSOMEHOW(l,n,list_addsomehow) \
+ ( LIST_CHECKCANHAVENODE(l,n), \
+ list_addsomehow((struct list*)&(l), NODE((n))), \
+ (void)(l).count++ \
+ )
+
+#define LIST_REMSOMEHOW(l,list_remsomehow) \
+ ( (typeof((l).head)) \
+ ( (l).count \
+ ? ( (l).count--, \
+ list_remsomehow((struct list*)&(l)) ) \
+ : 0 \
+ ) \
+ )
+
+
+#define LIST_ADDHEAD(l,n) LIST_ADDSOMEHOW((l),(n),list_addhead)
+#define LIST_ADDTAIL(l,n) LIST_ADDSOMEHOW((l),(n),list_addtail)
+#define LIST_REMHEAD(l) LIST_REMSOMEHOW((l),list_remhead)
+#define LIST_REMTAIL(l) LIST_REMSOMEHOW((l),list_remtail)
+
+#define LIST_REMOVE(l,n) \
+ ( LIST_CHECKCANHAVENODE(l,n), \
+ list_remove(NODE((n))), \
+ (void)(l).count-- \
+ )
+
+#define LIST_INSERT(l,n,pred) \
+ ( LIST_CHECKCANHAVENODE(l,n), \
+ LIST_CHECKCANHAVENODE(l,pred), \
+ list_insert((struct list*)&(l), NODE((n)), NODE((pred))), \
+ (void)(l).count++ \
+ )
+
+/*----- type predeclarations -----*/
+
typedef struct Conn Conn;
typedef struct Article Article;
+typedef struct InputFile InputFile;
+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);
+
+static void postfork_inputfile(InputFile *ipf);
/*----- configuration options -----*/
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 NODE(n) ((struct node*)&(n)->head)
-
-#define LIST_ADDHEAD(l,n) \
- (list_addhead((struct list*)&(l), NODE((n))), (void)(l).count++)
-#define LIST_ADDTAIL(l,n) \
- (list_addtail((struct list*)&(l), NODE((n))), (void)(l).count++)
-
-#define LIST_REMHEAD(l) \
- ((l).count ? ((l).count--, (void*)list_remhead((struct list*)&(l))) : 0)
-#define LIST_REMTAIL(l) \
- ((l).count ? ((l).count--, (void*)list_remtail((struct list*)&(l))) : 0)
-#define LIST_REMOVE(l,n) \
- (list_remove(NODE((n))), (void)(l).count--)
-#define LIST_INSERT(l,n,pred) \
- (list_insert((struct list*)&(l), NODE((n)), NODE((pred))), (void)(l).count++)
-
-
/*----- statistics -----*/
typedef enum { /* in queue in conn->sent */
/*----- core operational data structure types -----*/
-typedef struct InputFile {
- /* This is an instance of struct oop_readable */
+struct InputFile {
+ /* This is also an instance of struct oop_readable */
struct oop_readable readable; /* first */
oop_readable_call *readable_callback;
void *readable_callback_user;
int counts[art_MaxState][RCI_max];
char path[];
-} InputFile;
+};
struct Article {
+ ISNODE(Article);
ArtState state;
int midlen;
InputFile *ipf;
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;
static oop_source *loop;
-static int nconns;
-static LIST(Conn) idle, working, full;
-static LIST(Article) *queue;
+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 -----*/
-
-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 statemc_setstate(StateMachineState newsms, int periods,
- const char *forlog, const char *why);
-
/*========== logging ==========*/
static void logcore(int sysloglevel, const char *fmt, ...)
}
static void xfstat(int fd, struct stat *stab_r, const char *what) {
- int r= fstab(fd, stab_r);
+ int r= fstat(fd, stab_r);
if (r) sysdie("could not fstat %s", what);
}
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);
}
+static char *sanitise(const char *input, int len) {
+ static char sanibuf[100]; /* returns pointer to this buffer! */
+
+ const char *p= input;
+ char *q= sanibuf;
+ *q++= '`';
+ for (;;) {
+ if (q > sanibuf+sizeof(sanibuf)-8) { strcpy(q,"'.."); break; }
+ int c;
+ if (len<=0 || !(c= *p++)) { *q++= '\''; *q=0; break; }
+ if (c>=' ' && c<=126 && c!='\\') { *q++= c; continue; }
+ sprintf(q,"\\x%02x",c);
+ q += 4;
+ }
+ return sanibuf;
+}
+
/*========== making new connections ==========*/
static int connecting_sockets[2]= {-1,-1};
static void connect_attempt_discard(void) {
if (connecting_sockets[0])
- cancel_fd(connecting_sockets[0]);
+ loop->cancel_fd(connecting_sockets[0]);
perhaps_close(&connecting_sockets[0]);
perhaps_close(&connecting_sockets[1]);
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;
+ setnonblock(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");
alarm(connection_setup_timeout);
if (NNTPconnect(remote_host, port, &cn_from, &cn_to, buf) < 0) {
- if (buf[0]) {
- sanitise_inplace(buf);
- fatal("connect: rejected: %s", buf);
- } else {
- sysfatal("connect: connection attempt failed");
- }
+ if (buf[0]) fatal("connect: rejected: %s", sanitise(buf));
+ else sysfatal("connect: connection attempt failed");
}
if (NNTPsendpassword(remote_host, cn_from, cn_to) < 0)
sysfatal("connect: authentication failed");
}
int l= strlen(buf);
assert(l>=1);
- if (buf[-1]!='\n') {
- sanitise_inplace(buf);
+ if (buf[-1]!='\n')
fatal("connect: response to MODE STREAM is too long: %.100s...",
- remote_host, buf);
- }
- l--; if (l>0 && buf[1-]=='\r') l--;
+ remote_host, sanitise(buf));
+ l--; if (l>0 && buf[l-1]=='\r') l--;
buf[l]= 0;
char *ep;
int rcode= strtoul(buf,&ep,10);
- if (ep != buf[3]) {
- sanitise_inplace(buf);
- fatal("connect: bad response to MODE STREAM: %.50s", buf);
- }
+ if (ep != &buf[3])
+ fatal("connect: bad response to MODE STREAM: %.50s", sanitise(buf));
+
switch (rcode) {
case 203:
exitstatus= CONNCHILD_ESTATUS_STREAM;
case 500:
break;
default:
- sanitise_inplace(buf);
- warn("connect: unexpected response to MODE STREAM: %.50s", buf);
+ warn("connect: unexpected response to MODE STREAM: %.50s",
+ sanitise(buf));
exitstatus= 2;
break;
}
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();
}
}
assert(ev == OOP_RD_OK);
+ char *sani= sanitise(data, recsz);
+
char *ep;
unsigned long code= strtoul(data, &ep, 10);
if (ep != data+3 || *ep != ' ' || data[0]=='0') {
- char sanibuf[100];
- const char *p= data;
- char *q= sanibuf;
- *q++= '`';
- for (;;) {
- if (q > sanibuf+sizeof(sanibuf)-8) { strcpy(q,"..."); break; }
- int c= *p++;
- if (!c) { *q++= '\''; break; }
- if (c>=' ' && c<=126 && c!='\\') { *q++= c; continue; }
- sprintf(q,"\\x%02x",c);
- q += 4;
- }
- connfail(conn, "badly formatted response from peer: %s", sanibuf);
+ connfail(conn, "badly formatted response from peer: %s", sani);
return OOP_CONTINUE;
}
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 */
~ian / innduct.git / blobdiff