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This commit is contained in:
Aaron Blakely 2024-03-12 19:38:52 -05:00
parent e0041ac970
commit 777763af30
4 changed files with 88 additions and 74 deletions
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21
lib/irc.h
View File

@ -15,20 +15,37 @@
#include "db.h"
#ifdef _WIN32
#define OUTBUF_SIZE DEFAULT_BUFLEN
#define INBUF_SIZE DEFAULT_BUFLEN
#include <winsock2.h>
#define SECURITY_WIN32
#include <schannel.h>
#include <wincrypt.h>
#include <shlwapi.h>
#else
#define OUTBUF_SIZE 1200000
#define INBUF_SIZE 1200000
#include <stdbool.h>
#include <openssl/ssl.h>
#include <openssl/err.h>
#endif
#define OUTBUF_SIZE 1200000
#define INBUF_SIZE 1200000
struct irc_conn
{
#ifdef _WIN32
SOCKET srv_fd;
SCHANNEL_CRED schannelCred;
CtxtHandle ctxtHand;
SecBufferDesc outBufferDesc;
SecBuffer outBuffer;
SecBufferDesc inBufferDesc;
SecBuffer inBuffer;
SECURITY_STATUS secStatus;
DWORD dwSSPIFlags;
#else
FILE *srv_fd;
int ssl_fd;

3
lib/module.h
View File

@ -4,9 +4,6 @@
#include "irc.h"
#include "events.h"
#ifdef _WIN32
#include <windows.h>
#endif
struct module {
char name[25];

68
src/irc.c
View File

@ -19,9 +19,6 @@
#include <stdarg.h>
#ifdef _WIN32
#include <winsock2.h>
#include <ws2tcpip.h>
#include <schannel.h>
#define FDOPEN _fdopen
#define SETBUF setbuf
#else
@ -45,42 +42,16 @@ void irc_connect(struct irc_conn *bot)
struct sockaddr_in server;
struct hostent *host;
// SChannel stuff
SCHANNEL_CRED schannelCred;
CtxtHandle ctxtHandle;
SecBufferDesc outBufferDesc;
SecBuffer outBuffer;
SECURITY_STATUS secStatus;
DWORD dwSSPIFlags;
if (bot->use_ssl)
{
ZeroMemory(&schannelCred, sizeof(schannelCred));
ZeroMemory(&ctxtHandle, sizeof(ctxtHandle));
ZeroMemory(&outBufferDesc, sizeof(outBufferDesc));
ZeroMemory(&outBuffer, sizeof(outBuffer));
// init outbufferdesc and outbuffer
outBufferDesc.ulVersion = SECBUFFER_VERSION;
outBufferDesc.cBuffers = 1;
outBufferDesc.pBuffers = &outBuffer;
outBuffer.BufferType = SECBUFFER_TOKEN;
outBuffer.cbBuffer = 0;
outBuffer.pvBuffer = NULL;
// setup the credentials
schannelCred.dwVersion = SCHANNEL_CRED_VERSION;
schannelCred.grbitEnabledProtocols = SP_PROT_TLS1_2_CLIENT;
schannelCred.dwFlags = SCH_CRED_NO_DEFAULT_CREDS | SCH_CRED_NO_SYSTEM_MAPPER;
schannelCred.cCreds = 1;
schannelCred.paCred = &bot->cred;
schannelCred.hRootStore = NULL;
schannelCred.dwMinimumCipherStrength = 128;
schannelCred.dwMaximumCipherStrength = 128;
schannelCred.dwSessionLifespan = 0;
}
SCHANNEL_CEAD cred = {
.dwVersion = SCHANNEL_CRED_VERSION,
.dwFlags = SCH_USE_STRONG_CRYPTO
| SCH_CRED_AUTO_CRED_VALIDATION
| SCH_CRED_NO_DEFAULT_CREDS
.grbitEnabledProtocols = SP_PROT_TLS1_2,
};
CtxtHandle *context = NULL;
int res = 0;
sprintf(titlebuf, "xbot [connecting]: %s:%s", bot->host, bot->port);
SetConsoleTitle(titlebuf);
@ -132,22 +103,17 @@ void irc_connect(struct irc_conn *bot)
if (bot->use_ssl)
{
// perform the handshake
secStatus = InitalizeSecurityContet(NULL, NULL, NULL, dwSSPIFlags, 0, 0, NULL, 0, &ctxtHandle, &outBufferDesc, NULL, NULL);
if (secStatus != SEC_I_CONTINUE_NEEDED)
if (AcquireCredentialsHandle(NULL, UNISP_NAME, SECPKG_CRED_OUTBOUND, NULL, &cred, NULL, NULL, &bot->cred, NULL) != SEC_E_OK)
{
eprint("Error: Handshake failed\n");
exit(EXIT_FAILURE);
}
// send the handshake
if (send(bot->srv_fd, outBuffer.pvBuffer, outBuffer.cbBuffer, 0) == SOCKET_ERROR)
{
eprint("Error: Handshake failed\n");
exit(EXIT_FAILURE);
eprint("Error: Cannot acquire credentials handle\n");
closesocket(bot->srv_fd);
WSACleanup();
return;
}
bot->recvCount = bot->usedCount = bot->availableCount = 0;
bot->decrypted = NULL;
}
sprintf(titlebuf, "xbot [connected]: %s:%s", bot->host, bot->port);

70
src/main.c
View File

@ -203,28 +203,62 @@ int main(int argc, char **argv)
#ifdef _WIN32
if (FD_ISSET(bot.srv_fd, &rd))
{
bytesRecv = recv(bot.srv_fd, bot.in, INBUF_SIZE, 0);
if (bytesRecv == SOCKET_ERROR)
{
eprint("Error receiving data: %d\n", WSAGetLastError());
closesocket(bot.srv_fd);
WSACleanup();
return -1;
}
if (bytesRecv == 0)
if (bot->use_ssl)
{
eprint("xbot: remote host closed connection\n");
return 0;
bytesRecv = recv(bot.srv_fd, bot.inBuffer.pvBuffer, DEFAULT_BUFLEN, 0);
if (bytesRecv == SOCKET_ERROR)
{
eprint("Error receiving data: %d\n", WSAGetLastError());
closesocket(bot.srv_fd);
WSACleanup();
return -1;
}
if (bytesRecv == 0)
{
eprint("xbot: remote host closed connection\n");
return 0;
}
bot.inBuffer.cbBuffer = bytesRecv;
secStatus = DecryptMessage(&bot->ctxtHandle, &bot->inBuffer, 0, NULL);
if (secStatus != SEC_E_OK)
{
eprint("xbot: error on DecryptMessage()\n");
return -1;
}
strlcpy(bot.in, bot.inBuffer.pvBuffer, bot.inBuffer.cbBuffer);
bot.in[bot.inBuffer.cbBuffer] = '\0';
printf("recv: %s\r\n", bot.in);
}
else
{
bytesRecv = recv(bot.srv_fd, bot.in, INBUF_SIZE, 0);
if (bytesRecv == SOCKET_ERROR)
{
eprint("Error receiving data: %d\n", WSAGetLastError());
closesocket(bot.srv_fd);
WSACleanup();
return -1;
}
if (bytesRecv == 0)
{
eprint("xbot: remote host closed connection\n");
return 0;
}
bot.in[bytesRecv] = '\0';
printf("recv: %s\r\n", bot.in);
}
bot.in[bytesRecv] = '\0';
printf("recv: %s\r\n", bot.in);
// split bot.in into lines by \r\n and parse each one
while (1)
{
// remove \r