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limit the number of concurrent connections for all four protocols

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kick a client if it doesn't authenticate within 5s on ESD and native protocol


git-svn-id: file:///home/lennart/svn/public/pulseaudio/trunk@292 fefdeb5f-60dc-0310-8127-8f9354f1896f
This commit is contained in:
Lennart Poettering 2004-11-18 00:28:26 +00:00
parent c57d5deef6
commit eef235d879
4 changed files with 104 additions and 12 deletions
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60
polyp/protocol-esound.c
View file

@ -46,6 +46,12 @@
#include "xmalloc.h"
#include "log.h"
/* Don't accept more connection than this */
#define MAX_CONNECTIONS 10
/* Kick a client if it doesn't authenticate within this time */
#define AUTH_TIMEOUT 5
#define DEFAULT_COOKIE_FILE ".esd_auth"
#define PLAYBACK_BUFFER_SECONDS (.5)
@ -87,6 +93,8 @@ struct connection {
char *name;
struct pa_sample_spec sample_spec;
} scache;
struct pa_time_event *auth_timeout_event;
};
struct pa_protocol_esound {
@ -202,6 +210,9 @@ static void connection_free(struct connection *c) {
if (c->scache.memchunk.memblock)
pa_memblock_unref(c->scache.memchunk.memblock);
pa_xfree(c->scache.name);
if (c->auth_timeout_event)
c->protocol->core->mainloop->time_free(c->auth_timeout_event);
pa_xfree(c);
}
@ -256,6 +267,8 @@ static int esd_proto_connect(struct connection *c, esd_proto_t request, const vo
}
c->authorized = 1;
if (c->auth_timeout_event)
c->protocol->core->mainloop->time_free(c->auth_timeout_event);
}
ekey = *(uint32_t*)((uint8_t*) data+ESD_KEY_LEN);
@ -1003,25 +1016,40 @@ static pa_usec_t source_output_get_latency_cb(struct pa_source_output *o) {
/*** socket server callback ***/
static void auth_timeout(struct pa_mainloop_api*m, struct pa_time_event *e, const struct timeval *tv, void *userdata) {
struct connection *c = userdata;
assert(m && tv && c && c->auth_timeout_event == e);
if (!c->authorized)
connection_free(c);
}
static void on_connection(struct pa_socket_server*s, struct pa_iochannel *io, void *userdata) {
struct connection *c;
struct pa_protocol_esound *p = userdata;
char cname[256];
assert(s && io && userdata);
assert(s && io && p);
if (pa_idxset_ncontents(p->connections)+1 > MAX_CONNECTIONS) {
pa_log(__FILE__": Warning! Too many connections (%u), dropping incoming connection.\n", MAX_CONNECTIONS);
pa_iochannel_free(io);
return;
}
c = pa_xmalloc(sizeof(struct connection));
c->protocol = userdata;
c->protocol = p;
c->io = io;
pa_iochannel_set_callback(c->io, io_callback, c);
pa_iochannel_socket_peer_to_string(io, cname, sizeof(cname));
assert(c->protocol->core);
c->client = pa_client_new(c->protocol->core, "ESOUND", cname);
assert(p->core);
c->client = pa_client_new(p->core, "ESOUND", cname);
assert(c->client);
c->client->owner = c->protocol->module;
c->client->owner = p->module;
c->client->kill = client_kill_cb;
c->client->userdata = c;
c->authorized = c->protocol->public;
c->authorized = p->public;
c->swap_byte_order = 0;
c->dead = 0;
@ -1047,19 +1075,27 @@ static void on_connection(struct pa_socket_server*s, struct pa_iochannel *io, vo
c->scache.memchunk.length = c->scache.memchunk.index = 0;
c->scache.memchunk.memblock = NULL;
c->scache.name = NULL;
c->defer_event = c->protocol->core->mainloop->defer_new(c->protocol->core->mainloop, defer_callback, c);
assert(c->defer_event);
c->protocol->core->mainloop->defer_enable(c->defer_event, 0);
pa_idxset_put(c->protocol->connections, c, &c->index);
if (!c->authorized) {
struct timeval tv;
gettimeofday(&tv, NULL);
tv.tv_sec += AUTH_TIMEOUT;
c->auth_timeout_event = p->core->mainloop->time_new(p->core->mainloop, &tv, auth_timeout, c);
} else
c->auth_timeout_event = NULL;
c->defer_event = p->core->mainloop->defer_new(p->core->mainloop, defer_callback, c);
assert(c->defer_event);
p->core->mainloop->defer_enable(c->defer_event, 0);
pa_idxset_put(p->connections, c, &c->index);
}
/*** entry points ***/
struct pa_protocol_esound* pa_protocol_esound_new(struct pa_core*core, struct pa_socket_server *server, struct pa_module *m, struct pa_modargs *ma) {
struct pa_protocol_esound *p;
int public;
int public = 0;
assert(core && server && ma);
p = pa_xmalloc(sizeof(struct pa_protocol_esound));