static int run_server(struct conf **confs, const char *conffile,
int *rfds, int *sfds)
{
int i=0;
int ret=-1;
SSL_CTX *ctx=NULL;
int found_normal_child=0;
struct asfd *asfd=NULL;
struct asfd *scfd=NULL;
struct async *mainas=NULL;
const char *port=get_string(confs[OPT_PORT]);
const char *address=get_string(confs[OPT_ADDRESS]);
const char *status_port=get_string(confs[OPT_STATUS_PORT]);
const char *status_address=get_string(confs[OPT_STATUS_ADDRESS]);
if(!(ctx=ssl_initialise_ctx(confs)))
{
logp("error initialising ssl ctx\n");
goto end;
}
if((ssl_load_dh_params(ctx, confs)))
{
logp("error loading dh params\n");
goto end;
}
if(init_listen_socket(address, port, rfds)
|| init_listen_socket(status_address, status_port, sfds))
goto end;
if(!(mainas=async_alloc())
|| mainas->init(mainas, 0))
goto end;
for(i=0; i<LISTEN_SOCKETS && rfds[i]!=-1; i++)
{
struct asfd *newfd;
if(!(newfd=setup_asfd(mainas,
"main server socket", &rfds[i])))
goto end;
newfd->fdtype=ASFD_FD_SERVER_LISTEN_MAIN;
}
for(i=0; i<LISTEN_SOCKETS && sfds[i]!=-1; i++)
{
struct asfd *newfd;
if(!(newfd=setup_asfd(mainas,
"main server status socket", &sfds[i])))
goto end;
newfd->fdtype=ASFD_FD_SERVER_LISTEN_STATUS;
}
while(!hupreload)
{
switch(mainas->read_write(mainas))
{
case 0:
for(asfd=mainas->asfd; asfd; asfd=asfd->next)
{
if(asfd->new_client)
{
// Incoming client.
asfd->new_client=0;
if(process_incoming_client(asfd,
ctx, conffile, confs))
goto end;
if(!get_int(confs[OPT_FORK]))
{
gentleshutdown++;
ret=1;
goto end;
}
continue;
}
}
break;
default:
int removed=0;
// Maybe one of the fds had a problem.
// Find and remove it and carry on if possible.
for(asfd=mainas->asfd; asfd; )
{
struct asfd *a;
if(!asfd->want_to_remove)
{
asfd=asfd->next;
continue;
}
mainas->asfd_remove(mainas, asfd);
logp("%s: disconnected fd %d\n",
asfd->desc, asfd->fd);
a=asfd->next;
asfd_free(&asfd);
asfd=a;
removed++;
}
if(removed) break;
// If we got here, there was no fd to remove.
// It is a fatal error.
goto end;
}
for(asfd=mainas->asfd; asfd; asfd=asfd->next)
{
if(asfd->fdtype!=ASFD_FD_SERVER_PIPE_READ
|| !asfd->rbuf->buf) continue;
// One of the child processes is giving us information.
// Try to append it to any of the status child pipes.
for(scfd=mainas->asfd; scfd; scfd=scfd->next)
{
if(scfd->fdtype!=ASFD_FD_SERVER_PIPE_WRITE)
continue;
switch(scfd->append_all_to_write_buffer(scfd,
asfd->rbuf))
{
case APPEND_OK:
case APPEND_BLOCKED:
break;
default:
goto end;
}
}
// Free the information, even if we did not manage
// to append it. That should be OK, more will be along
// soon.
iobuf_free_content(asfd->rbuf);
}
chld_check_for_exiting(mainas);
// Leave if we had a SIGUSR1 and there are no children running.
if(gentleshutdown)
{
if(!gentleshutdown_logged)
{
logp("got SIGUSR2 gentle reload signal\n");
logp("will shut down once children have exited\n");
gentleshutdown_logged++;
}
// FIX THIS:
// found_normal_child=chld_add_fd_to_normal_sets(confs, &fsr, &fse, &mfd);
else if(!found_normal_child)
{
logp("all children have exited - shutting down\n");
break;
}
}
}
if(hupreload) logp("got SIGHUP reload signal\n");
ret=0;
end:
async_asfd_free_all(&mainas);
if(ctx) ssl_destroy_ctx(ctx);
return ret;
}
static int run_server(struct conf *conf, const char *conffile, int *rfd,
const char *oldport, const char *oldstatusport)
{
int ret=0;
SSL_CTX *ctx=NULL;
int found_normal_child=0;
if(!(ctx=ssl_initialise_ctx(conf)))
{
logp("error initialising ssl ctx\n");
return 1;
}
if((ssl_load_dh_params(ctx, conf)))
{
logp("error loading dh params\n");
return 1;
}
if(!oldport
|| strcmp(oldport, conf->port))
{
close_fd(rfd);
if((*rfd=init_listen_socket(conf->port, 1))<0)
return 1;
}
if(conf->status_port
&& (!oldstatusport
|| strcmp(oldstatusport, conf->status_port)))
{
close_fd(&sfd);
if((sfd=init_listen_socket(conf->status_port, 0))<0)
return 1;
}
while(!hupreload)
{
int mfd=-1;
fd_set fsr;
fd_set fsw;
fd_set fse;
struct timeval tval;
if(sigchld)
{
chld_check_for_exiting();
sigchld=0;
}
FD_ZERO(&fsr);
FD_ZERO(&fse);
tval.tv_sec=1;
tval.tv_usec=0;
add_fd_to_sets(*rfd, &fsr, NULL, &fse, &mfd);
if(sfd>=0) add_fd_to_sets(sfd, &fsr, NULL, &fse, &mfd);
// Add read fds of normal children.
found_normal_child=chld_add_fd_to_normal_sets(conf,
&fsr, &fse, &mfd);
// Leave if we had a SIGUSR1 and there are no children
// running.
if(gentleshutdown)
{
if(!gentleshutdown_logged)
{
logp("got SIGUSR2 gentle reload signal\n");
logp("will shut down once children have exited\n");
gentleshutdown_logged++;
}
else if(!found_normal_child)
{
logp("all children have exited - shutting down\n");
break;
}
}
if(select(mfd+1, &fsr, NULL, &fse, &tval)<0)
{
if(errno!=EAGAIN && errno!=EINTR)
{
logp("select error in normal part of %s: %s\n",
__func__, strerror(errno));
ret=1;
break;
}
}
if(FD_ISSET(*rfd, &fse))
{
// Happens when a client exits.
//logp("error on listening socket.\n");
if(!conf->forking) { gentleshutdown++; break; }
continue;
}
if((sfd>=0 && FD_ISSET(sfd, &fse)))
{
// Happens when a client exits.
//logp("error on status socket.\n");
if(!conf->forking) { gentleshutdown++; break; }
continue;
}
if(FD_ISSET(*rfd, &fsr))
{
// A normal client is incoming.
if(process_incoming_client(*rfd, conf, ctx,
conffile, 0 /* not a status client */))
{
ret=1;
break;
}
if(!conf->forking) { gentleshutdown++; break; }
}
if(sfd>=0 && FD_ISSET(sfd, &fsr))
{
// A status client is incoming.
//printf("status client?\n");
if(process_incoming_client(sfd, conf, ctx,
conffile, 1 /* a status client */))
{
ret=1;
break;
}
if(!conf->forking) { gentleshutdown++; break; }
}
if(chld_fd_isset_normal(conf, &fsr, &fse))
{
ret=1;
break;
}
// Have a separate select for writing to status server children
mfd=-1;
FD_ZERO(&fsw);
FD_ZERO(&fse);
if(!chld_add_fd_to_status_sets(conf, &fsw, &fse, &mfd))
{
// Did not find any status server children.
// No need to do the select.
continue;
}
// Do not hang around - doing the status stuff is a lower
// priority thing than dealing with normal clients.
tval.tv_sec=0;
tval.tv_usec=500;
//printf("try status server\n");
if(select(mfd+1, NULL, &fsw, &fse, &tval)<0)
{
if(errno!=EAGAIN && errno!=EINTR)
{
logp("select error in status part of %s: %s\n",
__func__, strerror(errno));
ret=1;
break;
}
}
if(chld_fd_isset_status(conf, &fsw, &fse))
{
ret=1;
break;
}
}
if(hupreload) logp("got SIGHUP reload signal\n");
ssl_destroy_ctx(ctx);
return ret;
}