begin implenting tool to extract call graph of C64 ROMs

src/collect_data.c

@@ -0,0 +1,152 @@
+/*
+tcpclient.c
+Copyright 2019, Paul Gardner-Stephen
+Copyright 2012, Isaakidis Marios, Daniel Aguado
+This program is free software; you can redistribute it and/or
+modify it under the terms of the GNU General Public License
+as published by the Free Software Foundation; either version 2
+of the License, or (at your option) any later version.
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+You should have received a copy of the GNU General Public License
+along with this program; if not, write to the Free Software
+Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+*/
+
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
+#include <netdb.h>
+#include <stdio.h>
+#include <unistd.h>
+#include <string.h>
+#include <stdlib.h>
+#include <fcntl.h>
+
+//file found = 1
+//file not found = 0
+
+//write and overwrite =1
+//apend =0
+
+//tcpclient IP port
+//argc1, argv0: tcpclient.exe
+//argc2, argv1: IP address TCP Server
+//argv3, argv2: TCP Server port
+
+int set_nonblock(int fd)
+{
+  int retVal=0;
+
+
+  do {
+    if (fd==-1) break;
+      
+    int flags;
+    if ((flags = fcntl(fd, F_GETFL, NULL)) == -1)
+      {
+        perror("fcntl");
+//        LOG_ERROR("set_nonblock: fcntl(%d,F_GETFL,NULL)",fd);
+        retVal=-1;
+        break;
+      }
+    if (fcntl(fd, F_SETFL, flags | O_NONBLOCK) == -1)
+    {
+      perror("fcntl");
+//      LOG_ERROR("set_nonblock: fcntl(%d,F_SETFL,n|O_NONBLOCK)",fd);
+      return -1;
+    }
+  } while (0);
+  return retVal;
+}
+
+
+int main (int argc, char *argv[]) {
+
+    int sockfd, rc, i, serverPort, nBytes;
+    struct sockaddr_in localAddr, servAddr;
+    struct hostent *h;
+    char option=' ';
+    char fNf='0';
+    char s;
+
+    /* Check parameters from command line */
+
+    if(argc != 3)//check number of argc in command line
+    {
+        fprintf(stderr,"Usage: tcpclient [IP_server] [server_port]\n");
+        return -1;
+    }
+
+    serverPort = atoi(argv[2]);
+    if(serverPort<=0 || serverPort>65535)//check number of TCP server port
+    {
+        fprintf(stderr, "The port number given is wrong.\n");
+        return -1;
+    }
+
+    h = gethostbyname(argv[1]);
+    if(h==NULL)//check assigment of TCP server host
+    {
+        perror("Unknown host ");
+        return -1;
+    }
+
+    /* Create TCP socket */
+    
+    servAddr.sin_family = h->h_addrtype;
+    memcpy((char *) &servAddr.sin_addr.s_addr, h->h_addr_list[0], h->h_length);
+    servAddr.sin_port = htons(serverPort);
+
+    sockfd = socket(AF_INET, SOCK_STREAM, 0);
+    if(sockfd < 0)//check TCP socket is created correctly
+    {
+        perror("Cannot open socket ");
+        return -1;
+    }
+
+    /* Bind any port number */
+
+    localAddr.sin_family = AF_INET;
+    localAddr.sin_addr.s_addr = htonl(INADDR_ANY);
+    localAddr.sin_port = htons(0);
+
+    rc = bind(sockfd, (struct sockaddr *) &localAddr, sizeof(localAddr));
+    if(rc < 0)//check TCP socket is bind correctly
+    {
+        perror("Cannot bind on TCP port ");
+        close(sockfd);
+        return -1;
+    }
+
+    /* Connect to TCP server */
+
+    rc = connect(sockfd, (struct sockaddr *) &servAddr, sizeof(servAddr));
+    if(rc < 0)//check TCP socket is connected correctly
+    {
+        perror("Cannot connect ");
+        close(sockfd);
+        return -1;
+    }
+
+    printf("Starting TCP client...\n");
+
+    set_nonblock(sockfd);
+
+    write(sockfd,"reset 0\r",strlen("reset 0\n"));
+
+    unsigned char buffer[65536];
+    while(1) {
+    nBytes = read(sockfd, buffer, sizeof(buffer));
+    if (nBytes >= 1) {
+       fprintf(stdout,"%d: %s\n",nBytes,buffer);
+       write(sockfd,"step\r",5);
+
+    } else usleep(10000);
+    }
+    close(sockfd);
+    return 0;
+}