Experimental ssh stuff. I doubt this is going to work.
This commit is contained in:
Andrew Pamment
parent
9125a69aa0
commit
04e352eae6
181
bbs.c
181
bbs.c
@ -20,7 +20,7 @@ struct bbs_config conf;
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struct user_record *gUser;
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int gSocket;
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int sshBBS;
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int usertimeout;
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int timeoutpaused;
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@ -145,11 +145,19 @@ void s_printf(char *fmt, ...) {
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}
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void s_putchar(char c) {
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write(gSocket, &c, 1);
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if (sshBBS) {
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putchar(c);
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} else {
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write(gSocket, &c, 1);
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}
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}
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void s_putstring(char *c) {
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write(gSocket, c, strlen(c));
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if (sshBBS) {
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printf("%s", c);
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} else {
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write(gSocket, c, strlen(c));
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}
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}
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void s_displayansi_p(char *file) {
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@ -194,31 +202,35 @@ char s_getchar() {
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int len;
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do {
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len = read(gSocket, &c, 1);
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if (sshBBS) {
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len = read(stdin, &c, 1);
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} else {
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len = read(gSocket, &c, 1);
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}
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if (len == 0) {
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disconnect("Socket Closed");
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}
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while (c == 255) {
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len = read(gSocket, &c, 1);
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if (len == 0) {
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disconnect("Socket Closed");
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} else if (c == 255) {
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usertimeout = 10;
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return c;
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}
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len = read(gSocket, &c, 1);
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if (len == 0) {
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disconnect("Socket Closed");
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}
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len = read(gSocket, &c, 1);
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if (len == 0) {
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disconnect("Socket Closed");
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if (!sshBBS) {
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while (c == 255) {
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len = read(gSocket, &c, 1);
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if (len == 0) {
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disconnect("Socket Closed");
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} else if (c == 255) {
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usertimeout = 10;
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return c;
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}
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len = read(gSocket, &c, 1);
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if (len == 0) {
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disconnect("Socket Closed");
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}
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len = read(gSocket, &c, 1);
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if (len == 0) {
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disconnect("Socket Closed");
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}
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}
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}
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}
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if (c == '\r') {
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@ -298,8 +310,10 @@ void disconnect(char *calledby) {
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}
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dolog("Node %d disconnected (%s)", mynode, calledby);
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sprintf(buffer, "%s/nodeinuse.%d", conf.bbs_path, mynode);
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remove(buffer);
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close(gSocket);
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remove(buffer);
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if (!sshBBS) {
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close(gSocket);
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}
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exit(0);
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}
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@ -456,7 +470,7 @@ void automessage_display() {
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s_getc();
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}
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void runbbs(int socket, char *ip) {
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void runbbs_real(int socket, char *ip, int ssh) {
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char buffer[256];
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char password[17];
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@ -476,10 +490,17 @@ void runbbs(int socket, char *ip) {
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ipaddress = ip;
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write(socket, iac_echo, 3);
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write(socket, iac_sga, 3);
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gUser = NULL;
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if (!ssh) {
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write(socket, iac_echo, 3);
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write(socket, iac_sga, 3);
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gUser = NULL;
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sshBBS = 0;
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} else {
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sshBBS = 1;
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}
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gSocket = socket;
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s_printf("Magicka BBS v%d.%d (%s), Loading...\r\n", VERSION_MAJOR, VERSION_MINOR, VERSION_STR);
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@ -506,7 +527,9 @@ void runbbs(int socket, char *ip) {
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if (mynode == 0) {
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s_printf("Sorry, all nodes are in use. Please try later\r\n");
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close(socket);
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if (!ssh) {
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close(socket);
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}
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exit(1);
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}
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@ -527,42 +550,70 @@ void runbbs(int socket, char *ip) {
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s_displayansi("issue");
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s_printf("\e[0mEnter your Login Name or NEW to create an account\r\n");
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s_printf("Login:> ");
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if (!ssh) {
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s_printf("\e[0mEnter your Login Name or NEW to create an account\r\n");
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s_printf("Login:> ");
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s_readstring(buffer, 25);
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s_readstring(buffer, 25);
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if (strcasecmp(buffer, "new") == 0) {
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user = new_user();
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} else {
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s_printf("\r\nPassword:> ");
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s_readpass(password, 16);
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user = check_user_pass(buffer, password);
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if (user == NULL) {
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s_printf("\r\nIncorrect Login.\r\n");
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disconnect("Incorrect Login");
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}
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if (strcasecmp(buffer, "new") == 0) {
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user = new_user();
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} else {
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s_printf("\r\nPassword:> ");
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s_readpass(password, 16);
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user = check_user_pass(buffer, password);
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if (user == NULL) {
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s_printf("\r\nIncorrect Login.\r\n");
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disconnect("Incorrect Login");
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}
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for (i=1;i<=conf.nodes;i++) {
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sprintf(buffer, "%s/nodeinuse.%d", conf.bbs_path, i);
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if (stat(buffer, &s) == 0) {
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nodefile = fopen(buffer, "r");
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if (!nodefile) {
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dolog("Error opening nodefile!");
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disconnect("Error opening nodefile!");
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}
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fgets(buffer, 256, nodefile);
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for (i=1;i<=conf.nodes;i++) {
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sprintf(buffer, "%s/nodeinuse.%d", conf.bbs_path, i);
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if (stat(buffer, &s) == 0) {
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nodefile = fopen(buffer, "r");
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if (!nodefile) {
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dolog("Error opening nodefile!");
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disconnect("Error opening nodefile!");
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}
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fgets(buffer, 256, nodefile);
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if (strcasecmp(user->loginname, buffer) == 0) {
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fclose(nodefile);
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s_printf("\r\nYou are already logged in.\r\n");
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disconnect("Already Logged in");
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if (strcasecmp(user->loginname, buffer) == 0) {
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fclose(nodefile);
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s_printf("\r\nYou are already logged in.\r\n");
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disconnect("Already Logged in");
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}
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fclose(nodefile);
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}
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fclose(nodefile);
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}
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}
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}
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}
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}
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} else {
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if (gUser != NULL) {
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user = gUser;
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s_printf("\e[0mWelcome back %s. Press enter to log in...\r\n", gUser->loginname);
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s_getc();
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for (i=1;i<=conf.nodes;i++) {
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sprintf(buffer, "%s/nodeinuse.%d", conf.bbs_path, i);
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if (stat(buffer, &s) == 0) {
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nodefile = fopen(buffer, "r");
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if (!nodefile) {
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dolog("Error opening nodefile!");
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disconnect("Error opening nodefile!");
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}
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fgets(buffer, 256, nodefile);
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if (strcasecmp(user->loginname, buffer) == 0) {
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fclose(nodefile);
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s_printf("\r\nYou are already logged in.\r\n");
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disconnect("Already Logged in");
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}
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fclose(nodefile);
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}
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}
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} else {
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gUser = new_user();
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user = gUser;
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}
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}
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sprintf(buffer, "%s/nodeinuse.%d", conf.bbs_path, mynode);
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nodefile = fopen(buffer, "w");
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if (!nodefile) {
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@ -649,3 +700,11 @@ void runbbs(int socket, char *ip) {
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dolog("%s is logging out, on node %d", user->loginname, mynode);
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disconnect("Log out");
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}
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void runbbs(int socket, char *ip) {
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runbbs_real(socket, ip, 0);
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}
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void runbbs_ssh(char *ip) {
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runbbs_real(-1, ip, 1);
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}
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@ -110,8 +110,9 @@ void chat_system(struct user_record *user) {
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char *message;
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char *sep;
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char *target;
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memset(inputbuffer, 0, 80);
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if (conf.irc_server == NULL) {
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memset(inputbuffer, 0, 80);
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if (conf.irc_server == NULL) {
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s_putstring("\r\nSorry, Chat is not supported on this system.\r\n");
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return;
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}
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131
main.c
131
main.c
@ -17,8 +17,14 @@
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extern struct bbs_config conf;
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extern struct user_record *gUser;
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int ssh_pid = -1;
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void sigterm_handler(int s)
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{
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if (ssh_pid != -1) {
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kill(ssh_pid, SIGTERM);
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}
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remove(conf.pid_file);
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exit(0);
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}
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@ -376,12 +382,85 @@ int ssh_authenticate(ssh_session p_ssh_session) {
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} while(1);
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}
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char *ssh_getip(ssh_session session) {
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struct sockaddr_storage tmp;
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struct sockaddr_in *sock;
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unsigned int len = 100;
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char ip[100] = "\0";
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getpeername(ssh_get_fd(session), (struct sockaddr*)&tmp, &len);
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sock = (struct sockaddr_in *)&tmp;
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inet_ntop(AF_INET, &sock->sin_addr, ip, len);
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return strdup(ip);
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}
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static int ssh_copy_fd_to_chan(socket_t fd, int revents, void *userdata) {
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ssh_channel chan = (ssh_channel)userdata;
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char buf[2048];
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int sz = 0;
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if(!chan) {
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close(fd);
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return -1;
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}
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if(revents & POLLIN) {
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sz = read(fd, buf, 2048);
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if(sz > 0) {
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ssh_channel_write(chan, buf, sz);
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}
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}
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if(revents & POLLHUP) {
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ssh_channel_close(chan);
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sz = -1;
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}
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return sz;
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}
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static int ssh_copy_chan_to_fd(ssh_session session,
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ssh_channel channel,
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void *data,
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uint32_t len,
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int is_stderr,
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void *userdata) {
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int fd = *(int*)userdata;
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int sz;
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(void)session;
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(void)channel;
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(void)is_stderr;
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sz = write(fd, data, len);
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return sz;
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}
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static void ssh_chan_close(ssh_session session, ssh_channel channel, void *userdata) {
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int fd = *(int*)userdata;
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(void)session;
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(void)channel;
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close(fd);
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}
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struct ssh_channel_callbacks_struct ssh_cb = {
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.channel_data_function = ssh_copy_chan_to_fd,
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.channel_eof_function = ssh_chan_close,
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.channel_close_function = ssh_chan_close,
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.userdata = NULL
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};
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void serverssh(int port) {
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ssh_session p_ssh_session;
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ssh_bind p_ssh_bind;
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int err;
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int pid;
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int shell;
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int fd;
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ssh_channel chan = 0;
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int bbs_pid;
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char *ip;
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ssh_event event;
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short events;
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err = ssh_init();
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if (err == -1) {
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fprintf(stderr, "Error starting SSH server.\n");
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@ -458,8 +537,45 @@ void serverssh(int port) {
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exit(-1);
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}
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ip = ssh_getip(p_ssh_session);
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bbs_pid = forkpty(&fd, NULL, NULL, NULL);
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if (bbs_pid == 0) {
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runbbs_ssh(ip);
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exit(0);
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}
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free(ip);
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ssh_cb.userdata = &fd;
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ssh_callbacks_init(&ssh_cb);
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ssh_set_channel_callbacks(chan, &cb);
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events = POLLIN | POLLPRI | POLLERR | POLLHUP | POLLNVAL;
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event = ssh_event_new();
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if(event == NULL) {
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ssh_finalize();
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exit(0);
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}
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if(ssh_event_add_fd(event, fd, events, ssh_copy_fd_to_chan, chan) != SSH_OK) {
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ssh_finalize();
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exit(0);
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}
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if(ssh_event_add_session(event, p_ssh_session) != SSH_OK) {
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ssh_finalize();
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exit(0);
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}
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do {
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ssh_event_dopoll(event, 1000);
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} while(!ssh_channel_is_closed(chan));
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ssh_event_remove_fd(event, fd);
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ssh_event_remove_session(event, p_ssh_session);
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ssh_event_free(event);
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}
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ssh_finalize();
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exit(0);
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} else if (pid > 0) {
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@ -494,6 +610,19 @@ void server(int port) {
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exit(1);
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}
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if (conf.ssh_server) {
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// fork ssh server
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ssh_pid = fork();
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if (ssh_pid > 0) {
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serverssh(conf.ssh_port);
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exit(0);
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}
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if (ssh_pid != 0) {
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fprintf(stderr, "Error forking ssh server.");
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}
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}
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socket_desc = socket(AF_INET, SOCK_STREAM, 0);
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if (socket_desc == -1) {
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remove(conf.pid_file);
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