AcessNative - Fixed CLIShell
[tpg/acess2.git] / AcessNative / ld-acess_src / request.c
1 /*
2  */
3 #define DEBUG   0
4
5
6 #if DEBUG
7 # define DEBUG_S        printf
8 #else
9 # define DEBUG_S(...)
10 # define DONT_INCLUDE_SYSCALL_NAMES
11 #endif
12
13 #include <stdlib.h>
14 #include <string.h>
15 #include <stdio.h>
16 #include <inttypes.h>
17 #ifdef __WIN32__
18 # include <windows.h>
19 # include <winsock.h>
20 #else
21 # include <unistd.h>
22 # include <sys/socket.h>
23 # include <netinet/in.h>
24 #endif
25 #include "request.h"
26 #include "../syscalls.h"
27
28 #define USE_TCP 1
29
30 // === PROTOTYPES ===
31 void    SendData(void *Data, int Length);
32  int    ReadData(void *Dest, int MaxLen, int Timeout);
33
34 // === GLOBALS ===
35 #ifdef __WIN32__
36 WSADATA gWinsock;
37 SOCKET  gSocket = INVALID_SOCKET;
38 #else
39 # define INVALID_SOCKET -1
40  int    gSocket = INVALID_SOCKET;
41 #endif
42 // Client ID to pass to server
43 // TODO: Implement such that each thread gets a different one
44  int    giSyscall_ClientID = 0;
45 struct sockaddr_in      gSyscall_ServerAddr;
46
47 // === CODE ===
48 void Request_Preinit(void)
49 {
50         // Set server address
51         memset((void *)&gSyscall_ServerAddr, '\0', sizeof(struct sockaddr_in));
52         gSyscall_ServerAddr.sin_family = AF_INET;
53         gSyscall_ServerAddr.sin_port = htons(SERVER_PORT);
54 }
55
56 int _InitSyscalls(void)
57 {
58         #ifdef __WIN32__
59         /* Open windows connection */
60         if (WSAStartup(0x0101, &gWinsock) != 0)
61         {
62                 fprintf(stderr, "Could not open Windows connection.\n");
63                 exit(0);
64         }
65         #endif
66         
67         #if USE_TCP
68         // Open TCP Connection
69         gSocket = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
70         #else
71         // Open UDP Connection
72         gSocket = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);
73         #endif
74         if (gSocket == INVALID_SOCKET)
75         {
76                 fprintf(stderr, "Could not create socket.\n");
77                 #if __WIN32__
78                 WSACleanup();
79                 #endif
80                 exit(0);
81         }
82         
83         #if 0
84         // Set client address
85         memset((void *)&client, '\0', sizeof(struct sockaddr_in));
86         client.sin_family = AF_INET;
87         client.sin_port = htons(0);
88         client.sin_addr.s_addr = htonl(0x7F000001);
89         #endif
90         
91         #if USE_TCP
92         if( connect(gSocket, (struct sockaddr *)&gSyscall_ServerAddr, sizeof(struct sockaddr_in)) < 0 )
93         {
94                 fprintf(stderr, "[ERROR -] Cannot connect to server (localhost:%i)\n", SERVER_PORT);
95                 perror("_InitSyscalls");
96                 #if __WIN32__
97                 closesocket(gSocket);
98                 WSACleanup();
99                 #else
100                 close(gSocket);
101                 #endif
102                 exit(0);
103         }
104         #endif
105         
106         #if 0
107         // Bind
108         if( bind(gSocket, (struct sockaddr *)&client, sizeof(struct sockaddr_in)) == -1 )
109         {
110                 fprintf(stderr, "Cannot bind address to socket.\n");
111                 #if __WIN32__
112                 closesocket(gSocket);
113                 WSACleanup();
114                 #else
115                 close(gSocket);
116                 #endif
117                 exit(0);
118         }
119         #endif
120         
121         #if USE_TCP
122         {
123                 tRequestAuthHdr auth;
124                 auth.pid = giSyscall_ClientID;
125                 SendData(&auth, sizeof(auth));
126                 int len = ReadData(&auth, sizeof(auth), 5);
127                 if( len == 0 ) { 
128                         fprintf(stderr, "Timeout waiting for auth response\n");
129                         exit(-1);
130                 }
131                 giSyscall_ClientID = auth.pid;
132         }
133         #else
134         // Ask server for a client ID
135         if( !giSyscall_ClientID )
136         {
137                 tRequestHeader  req;
138                  int    len;
139                 req.ClientID = 0;
140                 req.CallID = 0;
141                 req.NParams = 0;
142                 
143                 SendData(&req, sizeof(req));
144                 
145                 len = ReadData(&req, sizeof(req), 5);
146                 if( len == 0 ) {
147                         fprintf(stderr, "Unable to connect to server (localhost:%i)\n", SERVER_PORT);
148                         exit(-1);
149                 }
150                 
151                 giSyscall_ClientID = req.ClientID;
152         }
153         #endif
154         
155         return 0;
156 }
157
158 /**
159  * \brief Close the syscall socket
160  * \note Used in acess_fork to get a different port number
161  */
162 void _CloseSyscalls(void)
163 {
164         #if __WIN32__
165         closesocket(gSocket);
166         WSACleanup();
167         #else
168         close(gSocket);
169         #endif
170 }
171
172 int SendRequest(tRequestHeader *Request, int RequestSize, int ResponseSize)
173 {
174         if( gSocket == INVALID_SOCKET )
175         {
176                 _InitSyscalls();                
177         }
178         
179         // Set header
180         Request->ClientID = giSyscall_ClientID;
181         
182         #if 0
183         {
184                 for(i=0;i<RequestSize;i++)
185                 {
186                         printf("%02x ", ((uint8_t*)Request)[i]);
187                         if( i % 16 == 15 )      printf("\n");
188                 }
189                 printf("\n");
190         }
191         #endif
192         {
193                  int    i;
194                 char    *data = (char*)&Request->Params[Request->NParams];
195                 DEBUG_S("Request #%i (%s) -", Request->CallID, casSYSCALL_NAMES[Request->CallID]);
196                 for( i = 0; i < Request->NParams; i ++ )
197                 {
198                         switch(Request->Params[i].Type)
199                         {
200                         case ARG_TYPE_INT32:
201                                 DEBUG_S(" 0x%08x", *(uint32_t*)data);
202                                 data += sizeof(uint32_t);
203                                 break;
204                         case ARG_TYPE_INT64:
205                                 DEBUG_S(" 0x%016"PRIx64"", *(uint64_t*)data);
206                                 data += sizeof(uint64_t);
207                                 break;
208                         case ARG_TYPE_STRING:
209                                 DEBUG_S(" '%s'", (char*)data);
210                                 data += Request->Params[i].Length;
211                                 break;
212                         case ARG_TYPE_DATA:
213                                 DEBUG_S(" %p:0x%x", (char*)data, Request->Params[i].Length);
214                                 if( !(Request->Params[i].Flags & ARG_FLAG_ZEROED) )
215                                         data += Request->Params[i].Length;
216                                 break;
217                         }
218                 }
219                 DEBUG_S("\n");
220         }
221         
222         // Send it off
223         SendData(Request, RequestSize);
224
225         if( Request->CallID == SYS_EXIT )       return 0;
226
227         // Wait for a response (no timeout)
228         return ReadData(Request, ResponseSize, 0);
229 }
230
231 void SendData(void *Data, int Length)
232 {
233          int    len;
234         
235         #if USE_TCP
236         len = send(gSocket, Data, Length, 0);
237         #else
238         len = sendto(gSocket, Data, Length, 0,
239                 (struct sockaddr*)&gSyscall_ServerAddr, sizeof(gSyscall_ServerAddr));
240         #endif
241         
242         if( len != Length ) {
243                 fprintf(stderr, "[ERROR %i] ", giSyscall_ClientID);
244                 perror("SendData");
245                 exit(-1);
246         }
247 }
248
249 int ReadData(void *Dest, int MaxLength, int Timeout)
250 {
251          int    ret;
252         fd_set  fds;
253         struct timeval  tv;
254         struct timeval  *timeoutPtr;
255         
256         FD_ZERO(&fds);
257         FD_SET(gSocket, &fds);
258         
259         if( Timeout ) {
260                 tv.tv_sec = Timeout;
261                 tv.tv_usec = 0;
262                 timeoutPtr = &tv;
263         }
264         else {
265                 timeoutPtr = NULL;
266         }
267         
268         ret = select(gSocket+1, &fds, NULL, NULL, timeoutPtr);
269         if( ret == -1 ) {
270                 fprintf(stderr, "[ERROR %i] ", giSyscall_ClientID);
271                 perror("ReadData - select");
272                 exit(-1);
273         }
274         
275         if( !ret ) {
276                 printf("[ERROR %i] Timeout reading from socket\n", giSyscall_ClientID);
277                 return 0;       // Timeout
278         }
279         
280         #if USE_TCP
281         ret = recv(gSocket, Dest, MaxLength, 0);
282         #else
283         ret = recvfrom(gSocket, Dest, MaxLength, 0, NULL, 0);
284         #endif
285         
286         if( ret < 0 ) {
287                 fprintf(stderr, "[ERROR %i] ", giSyscall_ClientID);
288                 perror("ReadData");
289                 exit(-1);
290         }
291         
292         DEBUG_S("%i bytes read from socket\n", ret);
293         
294         return ret;
295 }

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