lorenz.stechauner/sesimos
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Implemented basic SSL

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This commit is contained in:
Lorenz Stechauner
2020-12-11 16:25:26 +01:00
parent f98ffc7077
commit 0bf8c0ccc3
4 changed files with 112 additions and 25 deletions
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39
src/client.c
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@ -40,27 +40,34 @@ int client_request_handler() {
return 0;
}
int client_connection_handler(int client) {
char buf1[256];
char buf2[256];
int client_connection_handler(sock *client) {
int ret;
print("Connection accepted from %s (%s) [%s]", client_addr_str, client_addr_str, "N/A");
sprintf(buf1, "Hello World!\nYour address is: %s\n", client_addr_str);
send(client, buf1, strlen(buf1), 0);
int len = -1;
while (len == -1) {
len = recv(client, &buf1, sizeof(buf1), 0);
}
sprintf(buf2, "Thank you, %.*s!\nGood bye!\n", len, buf1);
send(client, buf2, strlen(buf2), 0);
if (client->enc) {
client->ssl = SSL_new(client->ctx);
SSL_set_fd(client->ssl, client->socket);
close(client);
ret = SSL_accept(client->ssl);
if (ret <= 0) {
print(ERR_STR "Unable to perform handshake: %s" CLR_STR, ssl_get_error(client->ssl, ret));
goto close;
}
}
close:
if (client->enc) {
SSL_shutdown(client->ssl);
}
shutdown(client->socket, SHUT_RDWR);
close(client->socket);
print("Connection closed");
return 0;
}
int client_handler(int client, long client_num, struct sockaddr_in6 *client_addr) {
int client_handler(sock *client, long client_num, struct sockaddr_in6 *client_addr) {
int ret;
struct sockaddr_in6 *server_addr;
struct sockaddr_storage server_addr_storage;
@ -78,7 +85,7 @@ int client_handler(int client, long client_num, struct sockaddr_in6 *client_addr
}
socklen_t len = sizeof(server_addr_storage);
getsockname(client, (struct sockaddr *) &server_addr_storage, &len);
getsockname(client->socket, (struct sockaddr *) &server_addr_storage, &len);
server_addr = (struct sockaddr_in6 *) &server_addr_storage;
server_addr_str_ptr = malloc(INET6_ADDRSTRLEN);
inet_ntop(server_addr->sin6_family, (void *) &server_addr->sin6_addr, server_addr_str_ptr, INET6_ADDRSTRLEN);
@ -90,10 +97,10 @@ int client_handler(int client, long client_num, struct sockaddr_in6 *client_addr
log_base_prefix = malloc(256);
sprintf(log_base_prefix, "[%24s][%s%4i%s]%s[%*s][%5i]%s ",
server_addr_str, R_STR, ntohs(server_addr->sin6_port), CLR_STR,
server_addr_str, client->enc ? HTTPS_STR : HTTP_STR, ntohs(server_addr->sin6_port), CLR_STR,
color_table[client_num % 6], INET_ADDRSTRLEN, client_addr_str, ntohs(client_addr->sin6_port), CLR_STR);
int ret = client_connection_handler(client);
ret = client_connection_handler(client);
free(client_addr_str_ptr);
free(server_addr_str_ptr);
free(log_base_prefix);