/* remote.cpp - main, convert */ #include #include #include #include "dev.h" #include "sockio.h" #define LINELEN 255 #define BUFSIZE 1023 #define PROMPT "% " int convert(char *cmd, char *buf, char *pwd); /*------------------------------------------------------------------------ * * sReadL - read until len chars or \n is received * *------------------------------------------------------------------------ */ int sReadL(int s, char *buf, int len) { int n, i; for (i=0; i < len; i++ ) { n = sRead(s, &buf[i], 1); if (n <= 0) { return n; } if (buf[i] == '\n') { return i+1; } } return len; } /*---------------------------------------------------------------- * * main - NAT32 remote access program * *---------------------------------------------------------------- */ int main(int argc, char **argv) { char cmd[LINELEN+1]; char buf[BUFSIZE+1]; char password[256] = ""; int s, len; char server[128]; char port[128]; char *ptr; if (argc > 4) { printf("Usage: remote [server] [port] [password]\n"); return -1; } if (argc > 1) strcpy(server, argv[1]); else strcpy(server, "localhost"); if (argc >= 3) strcpy(port, argv[2]); else strcpy(port,"8080"); if (argc == 4) strcpy(password, argv[3]); netinit(0, 1); // initialise WinSock printf("Remote Shell Interface Version 1.1\n"); while (1) { printf("%s", PROMPT); // read a command line fgets(cmd, LINELEN, stdin); // strip the \n len = strlen(cmd); cmd[len-1] = '\0'; // exit command entered? if (!strcmp(cmd, "exit")) break; // converts the command line to the form: // "GET /shell?cmd=abc+def+...+password /HTTP1.0\r\n" len = convert(buf, cmd, password); // connect to the server s = connectTCP(server, port); if (s < 0) { netinit(0,0); printf("ERROR: can't connect to %s:%s\n", server, port); return -1; } // Send the command sWrite(s, buf, len); // buf holds the converted cmd sWrite(s, "\r\n", 2); // read response while (1) { len = sReadL(s, buf, BUFSIZE); if (len == 2) break; buf[len] = 0; } while (1) { len = sReadL(s, buf, BUFSIZE); if (len <= 0) break; else { buf[len] = 0; // Strip html ptr = strstr(buf, "

");
                if (ptr) {
                    fwrite(ptr+11, 1, len-11, stdout);
                    continue;
                }
                ptr = strstr(buf, "

"); if (ptr) { fwrite(buf, 1, len-13, stdout); continue; } fwrite(buf, 1, len, stdout); } } sClose(s); } netinit(0, 0); // uninitialise WinSock return 0; } /*---------------------------------------------------------------- * * convert - converts cmd to HTML GET command format in buf * *---------------------------------------------------------------- */ int convert(char *buf, char *cmd, char *pwd) { int flag = 0; char *token; sprintf(buf, "GET /shell?cmd="); token = strtok(cmd, " "); while (token) { if (flag) strcat(buf, "+"); else flag = 1; strcat(buf, token); token = strtok(NULL, " "); } if (*pwd) { strcat(buf, "+"); strcat(buf, pwd); } strcat(buf," HTTP/1.0\r\n"); return strlen(buf); }