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Chat system now does dual stack

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This commit is contained in:
Andrew Pamment 2018-01-19 21:42:06 +10:00
parent 26ddf9415f
commit 5feea139a4
2 changed files with 220 additions and 42 deletions
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148
src/chat_system.c
View File

@ -88,25 +88,58 @@ void raw(char *fmt, ...) {
write(chat_socket, sbuf, strlen(sbuf));
}
int hostname_to_ip(char * hostname , char* ip) {
struct hostent *he;
struct in_addr **addr_list;
int i;
int hostname_to_ip6(char * hostname , char* ip) {
struct addrinfo hints, *res, *p;
int status;
struct sockaddr_in6 *ipv6;
if ( (he = gethostbyname( hostname ) ) == NULL)
{
// get the host info
return 1;
}
memset(&hints, 0, sizeof(hints));
addr_list = (struct in_addr **) he->h_addr_list;
hints.ai_family = AF_INET6;
hints.ai_socktype = SOCK_STREAM;
for(i = 0; addr_list[i] != NULL; i++) {
strcpy(ip , inet_ntoa(*addr_list[i]) );
return 0;
if ((status = getaddrinfo(hostname, NULL, &hints, &res)) != 0) {
dolog("getaddrinfo: %s\n", gai_strerror(status));
return 1;
}
return 1;
for (p=res; p!= NULL; p=p->ai_next) {
if (p->ai_family == AF_INET6) {
ipv6 = (struct sockaddr_in6 *)p->ai_addr;
inet_ntop(p->ai_family, &(ipv6->sin6_addr), ip, INET6_ADDRSTRLEN);
freeaddrinfo(res);
return 0;
}
}
freeaddrinfo(res);
return 1;
}
int hostname_to_ip(char * hostname , char* ip) {
struct addrinfo hints, *res, *p;
int status;
struct sockaddr_in *ipv4;
memset(&hints, 0, sizeof(hints));
hints.ai_family = AF_INET;
hints.ai_socktype = SOCK_STREAM;
if ((status = getaddrinfo(hostname, NULL, &hints, &res)) != 0) {
dolog("getaddrinfo: %s\n", gai_strerror(status));
return 1;
}
for (p=res; p!= NULL; p=p->ai_next) {
if (p->ai_family == AF_INET) {
ipv4 = (struct sockaddr_in *)p->ai_addr;
inet_ntop(p->ai_family, &(ipv4->sin_addr), ip, INET_ADDRSTRLEN);
freeaddrinfo(res);
return 0;
}
}
freeaddrinfo(res);
return 1;
}
void append_screenbuffer(char *buffer) {
@ -209,6 +242,7 @@ void append_screenbuffer(char *buffer) {
void chat_system(struct user_record *user) {
struct sockaddr_in servaddr;
struct sockaddr_in6 servaddr6;
fd_set fds;
int t;
int ret;
@ -236,6 +270,8 @@ void chat_system(struct user_record *user) {
int z;
int y;
int last_color = 7;
int chat_connected = 0;
if (sshBBS) {
chat_in = STDIN_FILENO;
} else {
@ -256,23 +292,75 @@ void chat_system(struct user_record *user) {
s_putstring(get_string(50));
s_putstring("\e[24;1H");
memset(&servaddr, 0, sizeof(struct sockaddr_in));
servaddr.sin_family = AF_INET;
servaddr.sin_port = htons(conf.mgchat_port);
if ( (chat_socket = socket(AF_INET, SOCK_STREAM, 0)) < 0) {
return;
}
if (inet_pton(AF_INET, conf.mgchat_server, &servaddr.sin_addr) != 1) {
hostname_to_ip(conf.mgchat_server, buffer);
if (!inet_pton(AF_INET, buffer, &servaddr.sin_addr)) {
return;
if (conf.ipv6) {
memset(&servaddr6, 0, sizeof(struct sockaddr_in6));
if (inet_pton(AF_INET6, conf.mgchat_server, &servaddr6.sin6_addr) != 1) {
if (!hostname_to_ip6(conf.mgchat_server, buffer)) {
if (!inet_pton(AF_INET6, buffer, &servaddr6.sin6_addr)) {
chat_connected = 0;
} else {
servaddr6.sin6_family = AF_INET6;
servaddr6.sin6_port = htons(conf.mgchat_port);
if ( (chat_socket = socket(AF_INET6, SOCK_STREAM, 0)) < 0) {
chat_connected = 0;
} else {
if (connect(chat_socket, (struct sockaddr*)&servaddr6, sizeof(servaddr6)) < 0 ) {
chat_connected = 0;
} else {
chat_connected = 1;
}
}
}
} else {
chat_connected = 0;
}
} else {
servaddr6.sin6_family = AF_INET6;
servaddr6.sin6_port = htons(conf.mgchat_port);
if ( (chat_socket = socket(AF_INET6, SOCK_STREAM, 0)) < 0) {
chat_connected = 0;
} else {
if (connect(chat_socket, (struct sockaddr*)&servaddr6, sizeof(servaddr6)) < 0 ) {
chat_connected = 0;
} else {
chat_connected = 1;
}
}
}
}
if (connect(chat_socket, (struct sockaddr*)&servaddr, sizeof(servaddr)) < 0 ) {
return;
}
}
if (!chat_connected) {
memset(&servaddr, 0, sizeof(struct sockaddr_in));
if (inet_pton(AF_INET, conf.mgchat_server, &servaddr.sin_addr) != 1) {
if (!hostname_to_ip(conf.mgchat_server, buffer)) {
if (!inet_pton(AF_INET, buffer, &servaddr.sin_addr)) {
return;
} else {
servaddr.sin_family = AF_INET;
servaddr.sin_port = htons(conf.mgchat_port);
if ( (chat_socket = socket(AF_INET, SOCK_STREAM, 0)) < 0) {
return;
}
if (connect(chat_socket, (struct sockaddr*)&servaddr, sizeof(servaddr)) < 0 ) {
return;
}
}
} else {
return;
}
} else {
servaddr.sin_family = AF_INET;
servaddr.sin_port = htons(conf.mgchat_port);
if ( (chat_socket = socket(AF_INET, SOCK_STREAM, 0)) < 0) {
return;
}
if (connect(chat_socket, (struct sockaddr*)&servaddr, sizeof(servaddr)) < 0 ) {
return;
}
}
}
memset(buffer, 0, 513);

114
utils/magichat/main.c
View File

@ -39,8 +39,9 @@ static int jsoneq(const char *json, jsmntok_t *tok, const char *s) {
int main(int argc, char **argv) {
int port;
int server_socket;
int server_socket, server_socket6;
struct sockaddr_in server, client;
struct sockaddr_in6 server6, client6;
fd_set master, read_fds;
int fdmax;
int c;
@ -55,12 +56,18 @@ int main(int argc, char **argv) {
int r;
int nbytes;
FILE *fptr;
int ipv6 = 0;
int on = 1;
if (argc < 2) {
printf("Usage: magichat [port]\n");
printf("Usage: magichat [port] [ipv6(true/false)]\n");
return 0;
}
if (argc > 2 && strcasecmp(argv[2], "true") == 0) {
ipv6 = 1;
}
port = atoi(argv[1]);
if (port <= 1024 && port > 65535) {
@ -68,12 +75,44 @@ int main(int argc, char **argv) {
return 0;
}
FD_ZERO(&master);
if (ipv6) {
server_socket6 = socket(AF_INET6, SOCK_STREAM, 0);
if (server_socket6 == -1) {
fprintf(stderr, "Couldn't create socket (ipv6)..\n");
exit(1);
}
if (setsockopt(server_socket6, SOL_SOCKET, SO_REUSEADDR, (char *)&on, sizeof(on)) < 0) {
fprintf(stderr, "setsockopt(SO_REUSEADDR) failed");
exit(1);
}
if (setsockopt(server_socket6, IPPROTO_IPV6, IPV6_V6ONLY, (void *)&on, sizeof(on)) < 0) {
fprintf(stderr, "setsockopt(IPV6_V6ONLY) failed");
}
server6.sin6_family = AF_INET6;
server6.sin6_addr = in6addr_any;
server6.sin6_port = htons(port);
if (bind(server_socket6, (struct sockaddr *)&server6, sizeof(server6)) < 0) {
perror("Bind Failed, Error\n");
exit(1);
}
listen(server_socket6, 3);
FD_SET(server_socket6, &master);
}
server_socket = socket(AF_INET, SOCK_STREAM, 0);
if (server_socket == -1) {
fprintf(stderr, "Couldn't create socket..\n");
exit(1);
}
if (setsockopt(server_socket, SOL_SOCKET, SO_REUSEADDR, (char *)&on, sizeof(on)) < 0) {
fprintf(stderr, "setsockopt(SO_REUSEADDR) failed");
exit(1);
}
server.sin_family = AF_INET;
server.sin_addr.s_addr = INADDR_ANY;
server.sin_port = htons(port);
@ -84,12 +123,19 @@ int main(int argc, char **argv) {
}
listen(server_socket, 3);
FD_ZERO(&master);
FD_SET(server_socket, &master);
fdmax = server_socket;
c = sizeof(struct sockaddr_in);
if (ipv6) {
if (server_socket6 > server_socket) {
fdmax = server_socket6;
} else {
fdmax = server_socket;
}
} else {
fdmax = server_socket;
}
while (1) {
@ -102,6 +148,7 @@ int main(int argc, char **argv) {
for(i = 0; i <= fdmax; i++) {
if (FD_ISSET(i, &read_fds)) {
if (i == server_socket) {
c = sizeof(struct sockaddr_in);
new_fd = accept(server_socket, (struct sockaddr *)&client, (socklen_t *)&c);
if (new_fd == -1) {
perror("accept");
@ -134,7 +181,42 @@ int main(int argc, char **argv) {
if (new_fd > fdmax) {
fdmax = new_fd;
}
}
}
} else if (ipv6 && i == server_socket6) {
c = sizeof(struct sockaddr_in6);
new_fd = accept(server_socket6, (struct sockaddr *)&client6, (socklen_t *)&c);
if (new_fd == -1) {
perror("accept");
} else {
if (client_count == 0) {
clients = (struct client **)malloc(sizeof(struct client *));
} else {
clients = (struct client **)realloc(clients, sizeof(struct client *) * (client_count + 1));
}
if (!clients) {
fprintf(stderr, "Out of memory!\n");
return -1;
}
clients[client_count] = (struct client *)malloc(sizeof(struct client));
if (!clients[client_count]) {
fprintf(stderr, "Out of memory!\n");
return -1;
}
sprintf(clients[client_count]->bbstag, "UNKNOWN");
sprintf(clients[client_count]->nick, "UNKNOWN");
clients[client_count]->fd = new_fd;
client_count++;
FD_SET(new_fd, &master);
if (new_fd > fdmax) {
fdmax = new_fd;
}
}
} else {
if ((nbytes = recv(i, buf, sizeof buf, 0)) <= 0) {
for (k=0;k<client_count;k++) {
@ -143,10 +225,18 @@ int main(int argc, char **argv) {
snprintf(buffer, 1024, "{\"bbs\": \"SYSTEM\", \"nick\": \"SYSTEM\", \"msg\": \"%s (%s) has left the chat\" }\n", clients[k]->nick, clients[k]->bbstag);
for (j=0;j<=fdmax;j++) {
if (FD_ISSET(j, &master)) {
if (j != server_socket && j != clients[k]->fd) {
if (send(j, buffer, strlen(buffer), 0) == -1) {
perror("send");
if (ipv6) {
if (j != server_socket && j != server_socket6 && j != clients[k]->fd) {
if (send(j, buffer, strlen(buffer), 0) == -1) {
perror("send");
}
}
} else {
if (j != server_socket && j != clients[k]->fd) {
if (send(j, buffer, strlen(buffer), 0) == -1) {
perror("send");
}
}
}
}
}