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--- sdk:telnet-run-a-command-using-telnet [2015/03/02 10:22] – created fachet
+++ sdk:telnet-run-a-command-using-telnet [2015/05/06 12:50] (current) – external edit 127.0.0.1
@@ Line 1: / Line 1: @@
-<code c>
+====== Run a command using Telnet ======
+<code c telnetcmd.are>
 /* DESC: This script runs a shell command using telnet.
@@ Line 10: / Line 11: @@
 string telnet(ip, port, user, password, cmd)
 {
+  if ((sock = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP)) < 0) return NULL;
-	if ((sock = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP)) < 0) return NULL;
+  if (connect(sock, ip, port) < 0) return NULL;
-	if (connect(sock, ip, port) < 0) return NULL;
+  try {
-	try {
+    if ((buf = recv(sock)) == NULL || strlen(buf) < 3) throw NULL;
-		if ((buf = recv(sock)) == NULL || strlen(buf) < 3) throw NULL;
+    buf = explode(buf);
-		buf = explode(buf);
+    if (buf[0] == "\xff") // is command
-		if (buf[0] == "\xff") // is command
+    {
-		{
+      if (buf[1] == "\xfd" && buf[2] == "\d031") { //negotiate
-			if (buf[1] == "\xfd" && buf[2] == "\d031") { //negotiate
+        if (send(sock, "\d255\d251\d031") == -1) throw NULL;
-				if (send(sock, "\d255\d251\d031") == -1) throw NULL;
+        if (send(sock, "\d255\d250\d031\d000\d080\d000\d024\d255\d240") == -1) throw NULL;
-				if (send(sock, "\d255\d250\d031\d000\d080\d000\d024\d255\d240") == -1) throw NULL;
+      } else {
-			} else {
+        for (i = 0; i < strlen(buf); i++)
-				for (i = 0; i < strlen(buf); i++)
+          if (buf[i] == "\xfd") buf[i] = "\xfc";
-					if (buf[i] == "\xfd") buf[i] = "\xfc";
+          else if (buf[i] == "\xfb") buf[i] = "\xfd";
-					else if (buf[i] == "\xfb") buf[i] = "\xfd";
+          if (send(sock, implode(buf)) == -1) throw NULL;
-				if (send(sock, implode(buf)) == -1) throw NULL;
+          }
-			}
+    }
-		}
+    if ((buf = recv(sock)) == NULL || strlen(buf) < 1) throw NULL; // user ?
-		if ((buf = recv(sock)) == NULL || strlen(buf) < 1) throw NULL; // user ?
+    if (send(sock, strcat(user, "\r\n")) == -1) throw NULL;
-		if (send(sock, strcat(user, "\r\n")) == -1) throw NULL;
+    if ((buf = recv(sock)) == NULL || strlen(buf) < 1)throw NULL; // password ?
-		if ((buf = recv(sock)) == NULL || strlen(buf) < 1)throw NULL; // password ?
+    if (send(sock, strcat(password, "\r\n")) == -1) throw NULL;
-		if (send(sock, strcat(password, "\r\n")) == -1) throw NULL;
+    while((s = select(sock, 1)) > 0 && (buf = recv(sock)) != NULL && strlen(buf) > 0)
-		while((s = select(sock, 1)) > 0 && (buf = recv(sock)) != NULL && strlen(buf) > 0)
+      if (s == -1) throw NULL; //ignore all garbage
-			if (s == -1) throw NULL; //ignore all garbage
+      if (send(sock, strcat(cmd, "\r\n")) == -1) throw NULL;  //send command
-		if (send(sock, strcat(cmd, "\r\n")) == -1) throw NULL;  //send command
+      rbuf ="";
-		rbuf ="";
+    while((s = select(sock, 1)) > 0 && (buf = recv(sock)) != NULL && strlen(buf) > 0){
-		while((s = select(sock, 1)) > 0 && (buf = recv(sock)) != NULL && strlen(buf) > 0){
+      if (s == -1) throw NULL;
-			if (s == -1) throw NULL;
+      else rbuf = strcat(rbuf, buf); // collect return
-			else rbuf = strcat(rbuf, buf); // collect return
+    }
-		}
+    rbuf = right(rbuf, strlen(rbuf) - strlen(cmd) - 2); //cut cmd
-		rbuf = right(rbuf, strlen(rbuf) - strlen(cmd) - 2); //cut cmd
+    if (pos = strrchr(rbuf, "\r"))
-		if (pos = strrchr(rbuf, "\r"))
+      rbuf = left(rbuf, pos);
-			rbuf = left(rbuf, pos);
+    throw rbuf;
-		throw rbuf;
+  } catch (ret) {
-	} catch (ret) {
+    close (sock);
-		close (sock);
+    return ret;
-		return ret;
+  }
-	}
 }

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