#include "fork.h"
#include "uam_auth.h"
#include "afp_zeroconf.h"
+#include "afpstats.h"
-#define AFP_LISTENERS 32
-#define FDSET_SAFETY 5
+#define ASEV_THRESHHOLD 10
unsigned char nologin = 0;
static AFPObj obj;
-static server_child *server_children;
+static server_child_t *server_children;
static sig_atomic_t reloadconfig = 0;
static sig_atomic_t gotsigchld = 0;
+static struct asev *asev;
-/* Two pointers to dynamic allocated arrays which store pollfds and associated data */
-static struct pollfd *fdset;
-static struct polldata *polldata;
-static int fdset_size; /* current allocated size */
-static int fdset_used; /* number of used elements */
-static int disasociated_ipc_fd; /* disasociated sessions uses this fd for IPC */
-
-static afp_child_t *dsi_start(AFPObj *obj, DSI *dsi, server_child *server_children);
+static afp_child_t *dsi_start(AFPObj *obj, DSI *dsi, server_child_t *server_children);
static void afp_exit(int ret)
{
- server_unlock(_PATH_AFPDLOCK);
exit(ret);
}
/* ------------------
initialize fd set we are waiting for.
*/
-static void fd_set_listening_sockets(const AFPObj *config)
+static bool init_listening_sockets(const AFPObj *config)
{
DSI *dsi;
+ int numlisteners;
+
+ for (numlisteners = 0, dsi = config->dsi; dsi; dsi = dsi->next) {
+ numlisteners++;
+ }
+
+ asev = asev_init(config->options.connections + numlisteners + ASEV_THRESHHOLD);
+ if (asev == NULL) {
+ return false;
+ }
for (dsi = config->dsi; dsi; dsi = dsi->next) {
- fdset_add_fd(config->options.connections + AFP_LISTENERS + FDSET_SAFETY,
- &fdset,
- &polldata,
- &fdset_used,
- &fdset_size,
- dsi->serversock,
- LISTEN_FD,
- dsi);
+ if (!(asev_add_fd(asev, dsi->serversock, LISTEN_FD, dsi))) {
+ return false;
+ }
}
- if (config->options.flags & OPTION_KEEPSESSIONS)
- fdset_add_fd(config->options.connections + AFP_LISTENERS + FDSET_SAFETY,
- &fdset,
- &polldata,
- &fdset_used,
- &fdset_size,
- disasociated_ipc_fd,
- DISASOCIATED_IPC_FD,
- NULL);
+ return true;
}
-static void fd_reset_listening_sockets(const AFPObj *config)
+static bool reset_listening_sockets(const AFPObj *config)
{
const DSI *dsi;
for (dsi = config->dsi; dsi; dsi = dsi->next) {
- fdset_del_fd(&fdset, &polldata, &fdset_used, &fdset_size, dsi->serversock);
+ if (!(asev_del_fd(asev, dsi->serversock))) {
+ return false;
+ }
}
-
- if (config->options.flags & OPTION_KEEPSESSIONS)
- fdset_del_fd(&fdset, &polldata, &fdset_used, &fdset_size, disasociated_ipc_fd);
+ return true;
}
/* ------------------ */
case SIGTERM:
case SIGQUIT:
- switch (sig) {
- case SIGTERM:
- LOG(log_note, logtype_afpd, "AFP Server shutting down on SIGTERM");
- break;
- case SIGQUIT:
- if (obj.options.flags & OPTION_KEEPSESSIONS) {
- LOG(log_note, logtype_afpd, "AFP Server shutting down on SIGQUIT, NOT disconnecting clients");
- } else {
- LOG(log_note, logtype_afpd, "AFP Server shutting down on SIGQUIT");
- sig = SIGTERM;
- }
- break;
- }
+ LOG(log_note, logtype_afpd, "AFP Server shutting down");
if (server_children)
- server_child_kill(server_children, CHILD_DSIFORK, sig);
-
- server_unlock(_PATH_AFPDLOCK);
+ server_child_kill(server_children, SIGTERM);
_exit(0);
break;
LOG(log_info, logtype_afpd, "disallowing logins");
if (server_children)
- server_child_kill(server_children, CHILD_DSIFORK, sig);
+ server_child_kill(server_children, sig);
break;
case SIGHUP :
static void child_handler(void)
{
int fd;
- int status, i;
+ int status;
pid_t pid;
#ifndef WAIT_ANY
#endif /* ! WAIT_ANY */
while ((pid = waitpid(WAIT_ANY, &status, WNOHANG)) > 0) {
- for (i = 0; i < server_children->nforks; i++) {
- if ((fd = server_child_remove(server_children, i, pid)) != -1) {
- fdset_del_fd(&fdset, &polldata, &fdset_used, &fdset_size, fd);
- break;
- }
- }
-
if (WIFEXITED(status)) {
if (WEXITSTATUS(status))
LOG(log_info, logtype_afpd, "child[%d]: exited %d", pid, WEXITSTATUS(status));
else
LOG(log_info, logtype_afpd, "child[%d]: died", pid);
}
+
+ fd = server_child_remove(server_children, pid);
+ if (fd == -1) {
+ continue;
+ }
+ if (!(asev_del_fd(asev, fd))) {
+ LOG(log_error, logtype_afpd, "child[%d]: asev_del_fd: %d", pid, fd);
+ }
}
}
int main(int ac, char **av)
{
- fd_set rfds;
- void *ipc;
struct sigaction sv;
sigset_t sigs;
int ret;
/* Parse argv args and initialize default options */
afp_options_parse_cmdline(&obj, ac, av);
- if (check_lockfile("afpd", _PATH_AFPDLOCK) != 0)
- exit(EXITERR_SYS);
-
if (!(obj.cmdlineflags & OPTION_DEBUG) && (daemonize(0, 0) != 0))
exit(EXITERR_SYS);
- if (create_lockfile("afpd", _PATH_AFPDLOCK) != 0)
- exit(EXITERR_SYS);
-
/* Log SIGBUS/SIGSEGV SBT */
fault_setup(NULL);
- if (afp_config_parse(&obj) != 0)
+ if (afp_config_parse(&obj, "afpd") != 0)
afp_exit(EXITERR_CONF);
- set_processname("afpd");
- setuplog(obj.options.logconfig, obj.options.logfile);
-
/* Save the user's current umask */
obj.options.save_mask = umask(obj.options.umask);
/* install child handler for asp and dsi. we do this before afp_goaway
* as afp_goaway references stuff from here.
* XXX: this should really be setup after the initial connections. */
- if (!(server_children = server_child_alloc(obj.options.connections, CHILD_NFORKS))) {
+ if (!(server_children = server_child_alloc(obj.options.connections))) {
LOG(log_error, logtype_afpd, "main: server_child alloc: %s", strerror(errno) );
afp_exit(EXITERR_SYS);
}
+
+ sigemptyset(&sigs);
+ pthread_sigmask(SIG_SETMASK, &sigs, NULL);
memset(&sv, 0, sizeof(sv));
/* linux at least up to 2.4.22 send a SIGXFZ for vfat fs,
afp_exit(EXITERR_SYS);
}
#endif
+
+ sv.sa_handler = SIG_IGN;
+ sigemptyset( &sv.sa_mask );
+ if (sigaction(SIGPIPE, &sv, NULL ) < 0 ) {
+ LOG(log_error, logtype_afpd, "main: sigaction: %s", strerror(errno) );
+ afp_exit(EXITERR_SYS);
+ }
sv.sa_handler = afp_goaway; /* handler for all sigs */
afp_exit(EXITERR_SYS);
}
- /* afpd.conf: not in config file: lockfile, connections, configfile
+ /* afp.conf: not in config file: lockfile, configfile
* preference: command-line provides defaults.
* config file over-writes defaults.
*
sigaddset(&sigs, SIGCHLD);
pthread_sigmask(SIG_BLOCK, &sigs, NULL);
+#ifdef HAVE_DBUS_GLIB
+ /* Run dbus AFP statics thread */
+ if (obj.options.flags & OPTION_DBUS_AFPSTATS)
+ (void)afpstats_init(server_children);
+#endif
if (configinit(&obj) != 0) {
LOG(log_error, logtype_afpd, "main: no servers configured");
afp_exit(EXITERR_CONF);
/* Initialize */
cnid_init();
-
- /* watch atp, dsi sockets and ipc parent/child file descriptor. */
- if (obj.options.flags & OPTION_KEEPSESSIONS) {
- LOG(log_note, logtype_afpd, "Activating continous service");
- disasociated_ipc_fd = ipc_server_uds(_PATH_AFP_IPC);
+ /* watch atp, dsi sockets and ipc parent/child file descriptor. */
+ if (!(init_listening_sockets(&obj))) {
+ LOG(log_error, logtype_afpd, "main: couldn't initialize socket handler");
+ afp_exit(EXITERR_CONF);
}
- fd_set_listening_sockets(&obj);
-
/* set limits */
(void)setlimits();
afp_child_t *child;
- int fd[2]; /* we only use one, but server_child_add expects [2] */
- pid_t pid;
int saveerrno;
/* wait for an appleshare connection. parent remains in the loop
* afterwards. establishing timeouts for logins is a possible
* solution. */
while (1) {
- LOG(log_maxdebug, logtype_afpd, "main: polling %i fds", fdset_used);
pthread_sigmask(SIG_UNBLOCK, &sigs, NULL);
- ret = poll(fdset, fdset_used, -1);
+ ret = poll(asev->fdset, asev->used, -1);
pthread_sigmask(SIG_BLOCK, &sigs, NULL);
saveerrno = errno;
if (reloadconfig) {
nologin++;
- auth_unload();
- fd_reset_listening_sockets(&obj);
+
+ if (!(reset_listening_sockets(&obj))) {
+ LOG(log_error, logtype_afpd, "main: reset socket handlers");
+ afp_exit(EXITERR_CONF);
+ }
LOG(log_info, logtype_afpd, "re-reading configuration file");
configfree(&obj, NULL);
+ afp_config_free(&obj);
+
+ if (afp_config_parse(&obj, "afpd") != 0)
+ afp_exit(EXITERR_CONF);
+
if (configinit(&obj) != 0) {
LOG(log_error, logtype_afpd, "config re-read: no servers configured");
afp_exit(EXITERR_CONF);
}
- fd_set_listening_sockets(&obj);
+ if (!(init_listening_sockets(&obj))) {
+ LOG(log_error, logtype_afpd, "main: couldn't initialize socket handler");
+ afp_exit(EXITERR_CONF);
+ }
nologin = 0;
reloadconfig = 0;
break;
}
- for (int i = 0; i < fdset_used; i++) {
- if (fdset[i].revents & (POLLIN | POLLERR | POLLHUP)) {
- switch (polldata[i].fdtype) {
+ for (int i = 0; i < asev->used; i++) {
+ if (asev->fdset[i].revents & (POLLIN | POLLERR | POLLHUP | POLLNVAL)) {
+ switch (asev->data[i].fdtype) {
case LISTEN_FD:
- if (child = dsi_start(&obj, (DSI *)polldata[i].data, server_children)) {
- /* Add IPC fd to select fd set */
- fdset_add_fd(obj.options.connections + AFP_LISTENERS + FDSET_SAFETY,
- &fdset,
- &polldata,
- &fdset_used,
- &fdset_size,
- child->ipc_fds[0],
- IPC_FD,
- child);
+ if ((child = dsi_start(&obj, (DSI *)(asev->data[i].private), server_children))) {
+ if (!(asev_add_fd(asev, child->afpch_ipc_fd, IPC_FD, child))) {
+ LOG(log_error, logtype_afpd, "out of asev slots");
+
+ /*
+ * Close IPC fd here and mark it as unused
+ */
+ close(child->afpch_ipc_fd);
+ child->afpch_ipc_fd = -1;
+
+ /*
+ * Being unfriendly here, but we really
+ * want to get rid of it. The 'child'
+ * handle gets cleaned up in the SIGCLD
+ * handler.
+ */
+ kill(child->afpch_pid, SIGKILL);
+ }
}
break;
case IPC_FD:
- child = (afp_child_t *)polldata[i].data;
- LOG(log_debug, logtype_afpd, "main: IPC request from child[%u]", child->pid);
-
- if (ipc_server_read(server_children, child->ipc_fds[0]) != 0) {
- fdset_del_fd(&fdset, &polldata, &fdset_used, &fdset_size, child->ipc_fds[0]);
- close(child->ipc_fds[0]);
- child->ipc_fds[0] = -1;
- if ((obj.options.flags & OPTION_KEEPSESSIONS) && child->disasociated) {
- LOG(log_note, logtype_afpd, "main: removing reattached child[%u]", child->pid);
- server_child_remove(server_children, CHILD_DSIFORK, child->pid);
- }
- }
- break;
+ child = (afp_child_t *)(asev->data[i].private);
+ LOG(log_debug, logtype_afpd, "main: IPC request from child[%u]", child->afpch_pid);
- case DISASOCIATED_IPC_FD:
- LOG(log_debug, logtype_afpd, "main: IPC reconnect request");
- if ((fd[0] = accept(disasociated_ipc_fd, NULL, NULL)) == -1) {
- LOG(log_error, logtype_afpd, "main: accept: %s", strerror(errno));
- break;
- }
- if (readt(fd[0], &pid, sizeof(pid_t), 0, 1) != sizeof(pid_t)) {
- LOG(log_error, logtype_afpd, "main: readt: %s", strerror(errno));
- close(fd[0]);
- break;
- }
- LOG(log_note, logtype_afpd, "main: IPC reconnect from pid [%u]", pid);
- if ((child = server_child_add(server_children, CHILD_DSIFORK, pid, fd)) == NULL) {
- LOG(log_error, logtype_afpd, "main: server_child_add");
- close(fd[0]);
- break;
+ if (ipc_server_read(server_children, child->afpch_ipc_fd) != 0) {
+ if (!(asev_del_fd(asev, child->afpch_ipc_fd))) {
+ LOG(log_error, logtype_afpd, "child[%u]: no IPC fd");
+ }
+ close(child->afpch_ipc_fd);
+ child->afpch_ipc_fd = -1;
}
- child->disasociated = 1;
- fdset_add_fd(obj.options.connections + AFP_LISTENERS + FDSET_SAFETY,
- &fdset,
- &polldata,
- &fdset_used,
- &fdset_size,
- fd[0],
- IPC_FD,
- child);
break;
default:
return 0;
}
-static afp_child_t *dsi_start(AFPObj *obj, DSI *dsi, server_child *server_children)
+static afp_child_t *dsi_start(AFPObj *obj, DSI *dsi, server_child_t *server_children)
{
afp_child_t *child = NULL;
- if (!(child = dsi_getsession(dsi,
- server_children,
- obj->options.tickleval))) {
+ if (dsi_getsession(dsi, server_children, obj->options.tickleval, &child) != 0) {
LOG(log_error, logtype_afpd, "dsi_start: session error: %s", strerror(errno));
return NULL;
}
/* we've forked. */
- if (child->ipc_fds[0] == -1) {
+ if (child == NULL) {
configfree(obj, dsi);
- obj->ipc_fd = child->ipc_fds[1];
- free(child);
afp_over_dsi(obj); /* start a session */
exit (0);
}
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