actually sends stuff over a Real Network now. I FUCKING HATE YOU WINSOCK
This commit is contained in:
Ben Russell (300178622)
parent
36580ece02
commit
19d9ff85f5
1
common.h
1
common.h
@ -65,6 +65,7 @@ extern WSADATA windows_sucks;
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#include <sys/socket.h>
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#include <netdb.h>
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#include <netinet/in.h>
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#include <netinet/tcp.h>
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#include <arpa/inet.h>
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#include <fcntl.h>
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24
lua.c
24
lua.c
@ -187,6 +187,18 @@ int icelua_initfetch(void)
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? 0
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: main_argc - main_largstart);
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if(to_client_local.sockfd == -1)
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to_client_local.sockfd = SOCKFD_LOCAL;
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lua_getglobal(lstate_client, "common");
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lua_getglobal(lstate_client, "client");
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lua_pushstring(lstate_client, mod_basedir+4);
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lua_setfield(lstate_client, -2, "base_dir");
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lua_pop(lstate_client, 1);
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lua_pushstring(lstate_client, mod_basedir+4);
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lua_setfield(lstate_client, -2, "base_dir");
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lua_pop(lstate_client, 1);
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snprintf(xpath, 128, "%s/main_client.lua", mod_basedir);
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lua_pushcfunction(lstate_client, icelua_fn_common_fetch_block);
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lua_pushstring(lstate_client, "lua");
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@ -261,18 +273,6 @@ int icelua_init(void)
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icelua_loadbasefuncs(lstate_server);
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// shove some pathnames in
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if(lstate_client != NULL && mod_basedir != NULL)
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{
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lua_getglobal(lstate_client, "common");
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lua_getglobal(lstate_client, "client");
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lua_pushstring(lstate_client, mod_basedir+4);
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lua_setfield(lstate_client, -2, "base_dir");
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lua_pop(lstate_client, 1);
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lua_pushstring(lstate_client, mod_basedir+4);
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lua_setfield(lstate_client, -2, "base_dir");
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lua_pop(lstate_client, 1);
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}
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if(lstate_server != NULL)
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{
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lua_getglobal(lstate_server, "common");
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@ -140,7 +140,8 @@ int icelua_fn_common_fetch_start(lua_State *L)
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cfetch_ftype = strdup(ftype);
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cfetch_fname = strdup(fname);
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net_packet_push(blen, buf, -1, &(to_client_local.send_head), &(to_client_local.send_tail));
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net_packet_push(blen, buf, to_client_local.sockfd
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, &(to_client_local.send_head), &(to_client_local.send_tail));
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lua_pushboolean(L, 1);
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return 1;
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403
network.c
403
network.c
@ -29,6 +29,80 @@ client_t to_client_local;
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client_t to_clients[CLIENT_MAX];
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// TODO: binary search tree
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// SNIP: http://www.eyrie.org/~eagle/software/rra-c-util/
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/*
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* Replacement for a missing inet_ntop.
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*
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* Provides an implementation of inet_ntop that only supports IPv4 addresses
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* for hosts that are missing it. If you want IPv6 support, you need to have
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* a real inet_ntop function; this function is only provided so that code can
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* call inet_ntop unconditionally without needing to worry about whether the
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* host supports IPv6.
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*
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* The canonical version of this file is maintained in the rra-c-util package,
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* which can be found at <http://www.eyrie.org/~eagle/software/rra-c-util/>.
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*
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* Written by Russ Allbery <rra@stanford.edu>
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*
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* The authors hereby relinquish any claim to any copyright that they may have
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* in this work, whether granted under contract or by operation of law or
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* international treaty, and hereby commit to the public, at large, that they
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* shall not, at any time in the future, seek to enforce any copyright in this
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* work against any person or entity, or prevent any person or entity from
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* copying, publishing, distributing or creating derivative works of this
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* work.
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*/
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// Modified by GreaseMonkey, to support IPv6 and also to glue in nicely.
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// This is also to be treated as public domain.
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// ANYHOW, let's go.
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// This may already be defined by the system headers.
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#ifndef INET_ADDRSTRLEN
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# define INET_ADDRSTRLEN 16
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#endif
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// Systems old enough to not support inet_ntop may not have this either.
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#ifndef EAFNOSUPPORT
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# define EAFNOSUPPORT EDOM
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#endif
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#if WIN32
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const char *inet_ntop(int af, const void *src, char *dst, socklen_t cnt)
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{
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const uint8_t *p;
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if (af == AF_INET)
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{
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if (cnt < INET_ADDRSTRLEN)
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return NULL;
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p = src;
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snprintf(dst, cnt, "%u.%u.%u.%u",
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(unsigned int) (p[0] & 0xff), (unsigned int) (p[1] & 0xff),
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(unsigned int) (p[2] & 0xff), (unsigned int) (p[3] & 0xff));
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} else if (af == AF_INET6) {
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if (cnt < 5*8)
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return NULL;
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p = src;
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snprintf(dst, cnt, "%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x",
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(unsigned int) (p[0] & 0xff), (unsigned int) (p[1] & 0xff),
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(unsigned int) (p[2] & 0xff), (unsigned int) (p[3] & 0xff),
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(unsigned int) (p[4] & 0xff), (unsigned int) (p[5] & 0xff),
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(unsigned int) (p[6] & 0xff), (unsigned int) (p[7] & 0xff),
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(unsigned int) (p[8] & 0xff), (unsigned int) (p[9] & 0xff),
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(unsigned int) (p[10] & 0xff), (unsigned int) (p[11] & 0xff),
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(unsigned int) (p[12] & 0xff), (unsigned int) (p[13] & 0xff),
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(unsigned int) (p[14] & 0xff), (unsigned int) (p[15] & 0xff));
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} else {
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return NULL;
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}
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return dst;
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}
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#endif
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// END SNIP
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int net_packet_push(int len, const char *data, int sockfd, packet_t **head, packet_t **tail)
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{
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if(len > PACKET_LEN_MAX)
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@ -150,6 +224,50 @@ void net_packet_free(packet_t *pkt, packet_t **head, packet_t **tail)
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free(pkt);
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}
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void net_deinit_client(client_t *cli)
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{
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while(cli->head != NULL)
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net_packet_free(cli->head, &(cli->head), &(cli->tail));
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while(cli->send_head != NULL)
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net_packet_free(cli->send_head, &(cli->send_head), &(cli->send_tail));
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cli->sockfd = -1;
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}
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void net_kick_sockfd_immediate(int sockfd, char *msg)
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{
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char buf[260];
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buf[0] = 0x17;
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buf[1] = strlen(msg);
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memcpy(buf+2, msg, (int)(uint8_t)buf[1]);
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buf[2+(int)(uint8_t)buf[1]] = 0x00;
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fprintf(stderr, "KICK: %i \"%s\"\n", sockfd, msg);
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// only send what's necessary
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send(sockfd, buf, ((int)(uint8_t)buf[1])+1, 0);
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// nuke it
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close(sockfd);
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}
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void net_kick_client_immediate(client_t *cli, char *msg)
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{
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if(cli == &to_client_local)
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{
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fprintf(stderr, "KICK: local \"%s\"\n", msg);
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fprintf(stderr, "PANIC: I don't know how to handle a local client kick yet!\n");
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fflush(stderr);
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abort();
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}
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if(cli == NULL)
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return;
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net_kick_sockfd_immediate(cli->sockfd, msg);
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cli->sockfd = -1;
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net_deinit_client(cli);
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}
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const char *net_aux_gettype_str(int ftype)
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{
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switch(ftype)
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@ -378,12 +496,15 @@ void net_eat_s2c(client_t *cli)
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{
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fprintf(stderr, "ERROR: string not zero-terminated!\n");
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} else if(mod_basedir == NULL) {
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mod_basedir = strdup(1+pkt->data);
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mod_basedir = strdup(2+pkt->data);
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boot_mode |= 8;
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printf("base dir = \"%s\"\n", mod_basedir);
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} else {
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fprintf(stderr, "ERROR: base dir already defined!\n");
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// TODO: make this fatal
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}
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net_packet_free(pkt, &(cli->head), &(cli->tail));
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} break;
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case 0x31: {
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// 0x31 clen.u32 ulen.u32:
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@ -566,7 +687,6 @@ void net_flush_parse_c2s(client_t *cli)
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void net_flush_parse_s2c(client_t *cli)
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{
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// TODO!
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int offs = 0;
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int len;
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char *data;
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@ -602,6 +722,45 @@ void net_flush_parse_s2c(client_t *cli)
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}
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}
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client_t *net_find_sockfd(int sockfd)
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{
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int i;
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client_t *cli;
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if(sockfd == SOCKFD_LOCAL)
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{
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return &to_client_local;
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} else if(sockfd >= 0) {
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for(i = 0; i < CLIENT_MAX; i++)
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if(to_clients[i].sockfd == sockfd)
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return &to_clients[i];
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} else {
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return NULL;
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}
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return NULL;
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}
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client_t *net_alloc_sockfd(int sockfd)
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{
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int i;
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client_t *cli = net_find_sockfd(sockfd);
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if(cli != NULL)
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return cli;
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for(i = 0; i < CLIENT_MAX; i++)
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{
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if(to_clients[i].sockfd == -1)
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{
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to_clients[i].sockfd = sockfd;
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return &to_clients[i];
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}
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}
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return NULL;
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}
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int net_flush_transfer(client_t *cfrom, client_t *cto, packet_t *pfrom)
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{
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if(cto->isfull)
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@ -648,7 +807,6 @@ int net_flush_transfer(client_t *cfrom, client_t *cto, packet_t *pfrom)
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*/
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// and of course the serialised version:
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// TODO: make this work over a network!
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if(cto == &to_server)
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{
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memcpy(cfrom->spkt_buf + cfrom->spkt_len, pfrom->data, pfrom->len);
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@ -663,7 +821,67 @@ int net_flush_transfer(client_t *cfrom, client_t *cto, packet_t *pfrom)
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void net_flush_accept_one(int sockfd, struct sockaddr_storage *ss, socklen_t slen)
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{
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char xstr[128];
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xstr[0] = '?';
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xstr[1] = '\0';
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int cport = 0;
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switch(ss->ss_family)
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{
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case AF_INET:
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inet_ntop(AF_INET, &(((struct sockaddr_in *)(ss))->sin_addr)
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, xstr, 127);
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cport = ((struct sockaddr_in *)(ss))->sin_port;
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break;
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case AF_INET6:
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inet_ntop(AF_INET6, &(((struct sockaddr_in6 *)(ss))->sin6_addr)
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, xstr, 127);
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cport = ((struct sockaddr_in6 *)(ss))->sin6_port;
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break;
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}
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printf("connection from %s, port %i, family %i\n", xstr, cport, ss->ss_family);
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// disable Nagle's algo
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int yes = 1;
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if(setsockopt(sockfd, IPPROTO_TCP, TCP_NODELAY, (void *)&yes, sizeof(yes)) == -1)
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{
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net_kick_sockfd_immediate(sockfd, "Could not disable Nagle's algorithm!"
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" Kicked because gameplay will be complete shit otherwise.");
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return;
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}
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// set connection nonblocking
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yes = 1;
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#ifdef WIN32
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if(ioctlsocket(sockfd,FIONBIO,(void *)&yes) == -1) {
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#else
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if(fcntl(sockfd, F_SETFL,
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fcntl(sockfd, F_GETFL) | O_NONBLOCK) == -1) {
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#endif
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net_kick_sockfd_immediate(sockfd, "Could not set up a nonblocking connection!");
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return;
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}
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// get a slot
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client_t *cli = net_alloc_sockfd(sockfd);
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if(cli == NULL)
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{
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net_kick_sockfd_immediate(sockfd, "Server ran out of free slots!");
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return;
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}
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// send pkg basedir packet
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{
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char buf[260];
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buf[0] = 0x0F;
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buf[1] = strlen(mod_basedir);
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memcpy(buf+2, mod_basedir, (int)(uint8_t)buf[1]);
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buf[2+(int)(uint8_t)buf[1]] = 0x00;
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net_packet_push(2+((int)(uint8_t)buf[1])+1, buf, sockfd,
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&(to_server.send_head), &(to_server.send_tail));
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}
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}
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void net_flush_accept(void)
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@ -676,10 +894,11 @@ void net_flush_accept(void)
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if(sockfd == -1)
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{
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int err = errno;
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#ifdef WIN32
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int err = WSAGetLastError();
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if(err != WSAEWOULDBLOCK)
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#else
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int err = errno;
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if(err != EAGAIN && err != EWOULDBLOCK)
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#endif
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{
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@ -698,10 +917,11 @@ void net_flush_accept(void)
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if(sockfd == -1)
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{
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int err = errno;
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#ifdef WIN32
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int err = WSAGetLastError();
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if(err != WSAEWOULDBLOCK)
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#else
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int err = errno;
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if(err != EAGAIN && err != EWOULDBLOCK)
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#endif
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{
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@ -713,6 +933,125 @@ void net_flush_accept(void)
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}
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}
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void net_flush_snr(client_t *cli)
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{
|
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if(cli == &to_client_local)
|
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{
|
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if(boot_mode & 2)
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{
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// don't do anything, it's already in the buffer
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return;
|
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} else {
|
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{
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int bs = send(cli->sockfd, cli->spkt_buf,
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cli->spkt_len, 0);
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|
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if(bs == -1)
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{
|
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#ifdef WIN32
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int err = WSAGetLastError();
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if(err != WSAEWOULDBLOCK)
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#else
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int err = errno;
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if(err != EAGAIN && err != EWOULDBLOCK)
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#endif
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{
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perror("net_flush_snr(client.send)");
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net_kick_client_immediate(cli, "Error sending packet!");
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return;
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}
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} else if(bs > 0) {
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//printf("sent data! %i\n", bs);
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cli->spkt_len -= bs;
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memmove(cli->spkt_buf, cli->spkt_buf+bs, cli->spkt_len);
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}
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}
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{
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int bs = recv(cli->sockfd, cli->rpkt_buf+cli->rpkt_len,
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PACKET_LEN_MAX*2-cli->rpkt_len, 0);
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|
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if(bs == -1)
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{
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#ifdef WIN32
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int err = WSAGetLastError();
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if(err != WSAEWOULDBLOCK)
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#else
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int err = errno;
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if(err != EAGAIN && err != EWOULDBLOCK)
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#endif
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{
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perror("net_flush_snr(client.recv)");
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net_kick_client_immediate(cli, "Error receiving packet!");
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return;
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}
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} else if(bs == 0) {
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fprintf(stderr, "%i: recv: connection axed\n", cli->sockfd);
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net_kick_client_immediate(cli, "Connection axed.");
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return;
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} else {
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//printf("got data! %i\n", bs);
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cli->rpkt_len += bs;
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}
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}
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}
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} else {
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//printf("send sockfd %i %i %i\n", cli->sockfd, cli->rpkt_len, cli->rpkt_len);
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{
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int bs = send(cli->sockfd, cli->rpkt_buf,
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cli->rpkt_len, 0);
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|
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if(bs == -1)
|
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{
|
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#ifdef WIN32
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int err = WSAGetLastError();
|
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if(err != WSAEWOULDBLOCK)
|
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#else
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int err = errno;
|
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if(err != EAGAIN && err != EWOULDBLOCK)
|
||||
#endif
|
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{
|
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perror("net_flush_snr(server.send)");
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net_kick_client_immediate(cli, "Error sending packet!");
|
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return;
|
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}
|
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} else if(bs > 0) {
|
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//printf("server sent data! %i\n", bs);
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cli->rpkt_len -= bs;
|
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memmove(cli->rpkt_buf, cli->rpkt_buf+bs, cli->rpkt_len);
|
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}
|
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}
|
||||
|
||||
{
|
||||
int bs = recv(cli->sockfd, cli->spkt_buf+cli->spkt_len,
|
||||
PACKET_LEN_MAX*2-cli->spkt_len, 0);
|
||||
|
||||
if(bs == -1)
|
||||
{
|
||||
#ifdef WIN32
|
||||
int err = WSAGetLastError();
|
||||
if(err != WSAEWOULDBLOCK)
|
||||
#else
|
||||
int err = errno;
|
||||
if(err != EAGAIN && err != EWOULDBLOCK)
|
||||
#endif
|
||||
{
|
||||
perror("net_flush_snr(server.recv)");
|
||||
net_kick_client_immediate(cli, "Error receiving packet!");
|
||||
return;
|
||||
}
|
||||
} else if(bs == 0) {
|
||||
fprintf(stderr, "%i: recv: connection axed\n", cli->sockfd);
|
||||
net_kick_client_immediate(cli, "Connection axed.");
|
||||
return;
|
||||
} else {
|
||||
//printf("server got data! %i\n", bs);
|
||||
cli->spkt_len += bs;
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
void net_flush(void)
|
||||
{
|
||||
packet_t *pkt, *npkt;
|
||||
@ -720,6 +1059,8 @@ void net_flush(void)
|
||||
|
||||
if(boot_mode & 2)
|
||||
{
|
||||
net_flush_accept();
|
||||
|
||||
// clear full flags
|
||||
for(i = 0; i < CLIENT_MAX; i++)
|
||||
to_clients[i].isfull = 0;
|
||||
@ -733,13 +1074,22 @@ void net_flush(void)
|
||||
|
||||
//printf("pkt = %016llX\n", pkt);
|
||||
|
||||
client_t *cli = NULL;
|
||||
|
||||
// TODO: find correct client properly
|
||||
cli = &to_client_local;
|
||||
client_t *cli = net_find_sockfd(pkt->sockfd);
|
||||
|
||||
if(cli == NULL)
|
||||
{
|
||||
fprintf(stderr, "EDOOFUS: given sockfd %i could not be found!\n"
|
||||
, pkt->sockfd);
|
||||
fflush(stderr);
|
||||
abort();
|
||||
} else {
|
||||
net_flush_transfer(&to_server, cli, pkt);
|
||||
}
|
||||
}
|
||||
|
||||
for(i = 0; i < CLIENT_MAX; i++)
|
||||
if(to_clients[i].sockfd != -1)
|
||||
net_flush_snr(&to_clients[i]);
|
||||
|
||||
// parse the incoming stuff
|
||||
for(i = 0; i < CLIENT_MAX; i++)
|
||||
@ -760,6 +1110,8 @@ void net_flush(void)
|
||||
net_flush_transfer(&to_client_local, &to_server, pkt);
|
||||
}
|
||||
|
||||
net_flush_snr(&to_client_local);
|
||||
|
||||
net_flush_parse_s2c(&to_client_local);
|
||||
}
|
||||
|
||||
@ -794,25 +1146,22 @@ int net_gethost(char *name, int port, struct sockaddr *sa, size_t alen)
|
||||
best = NULL;
|
||||
for(fol = res; fol != NULL; fol = fol->ai_next)
|
||||
{
|
||||
#ifdef WIN32
|
||||
printf("lookup: Family %i - Not giving IP because WINDOWS SUCKS ASS\n", fol->ai_family);
|
||||
#else
|
||||
char xstr[128];
|
||||
xstr[0] = '?';
|
||||
xstr[1] = '\0';
|
||||
switch(fol->ai_family)
|
||||
{
|
||||
case AF_INET:
|
||||
case AF_INET: {
|
||||
inet_ntop(AF_INET, &(((struct sockaddr_in *)(fol->ai_addr))->sin_addr)
|
||||
, xstr, 127);
|
||||
break;
|
||||
case AF_INET6:
|
||||
} break;
|
||||
case AF_INET6: {
|
||||
inet_ntop(AF_INET6, &(((struct sockaddr_in6 *)(fol->ai_addr))->sin6_addr)
|
||||
, xstr, 127);
|
||||
break;
|
||||
} break;
|
||||
}
|
||||
printf("lookup: %s\n", xstr);
|
||||
#endif
|
||||
|
||||
// NOTE: prioritising IPv4 over IPv6.
|
||||
if(best == NULL)
|
||||
{
|
||||
@ -847,6 +1196,18 @@ int net_connect(void)
|
||||
if(connect(sockfd, (struct sockaddr *)&sa, sizeof(sa)) == -1)
|
||||
return error_perror("net_connect(connect)");
|
||||
|
||||
int yes = 1;
|
||||
#ifdef WIN32
|
||||
if(ioctlsocket(sockfd, FIONBIO, (void *)&yes))
|
||||
#else
|
||||
if(fcntl(sockfd, F_SETFL,
|
||||
fcntl(sockfd, F_GETFL) | O_NONBLOCK))
|
||||
#endif
|
||||
return error_perror("net_connect(nonblock)");
|
||||
|
||||
if(setsockopt(sockfd, IPPROTO_TCP, TCP_NODELAY, (void *)&yes, sizeof(yes)) == -1)
|
||||
return error_perror("net_connect(nodelay)");
|
||||
|
||||
to_client_local.sockfd = sockfd;
|
||||
} break;
|
||||
|
||||
@ -987,14 +1348,6 @@ void net_unbind(void)
|
||||
}
|
||||
}
|
||||
|
||||
void net_deinit_client(client_t *cli)
|
||||
{
|
||||
while(cli->head != NULL)
|
||||
net_packet_free(cli->head, &(cli->head), &(cli->tail));
|
||||
while(cli->send_head != NULL)
|
||||
net_packet_free(cli->send_head, &(cli->send_head), &(cli->send_tail));
|
||||
}
|
||||
|
||||
int net_init(void)
|
||||
{
|
||||
int i;
|
||||
|
||||
Loading…
x
Reference in New Issue
Block a user