/*
* Pipes all outgoing private messages through OTR
*/
static void sig_server_sendmsg(SERVER_REC *server, const char *target,
const char *msg, void *target_type_p)
{
int ret;
char *otrmsg = NULL;
key_gen_check();
if (GPOINTER_TO_INT(target_type_p) != SEND_TARGET_NICK) {
goto end;
}
/* Critical section. On error, message MUST NOT be sent */
ret = otr_send(server, msg, target, &otrmsg);
if (ret) {
signal_stop();
goto end;
}
if (!otrmsg) {
/* Send original message */
signal_continue(4, server, target, msg, target_type_p);
} else {
/* Send encrypted message */
signal_continue(4, server, target, otrmsg, target_type_p);
}
end:
otrl_message_free(otrmsg);
return;
}
void encrypt_msg(SERVER_REC * server, char *target, char *msg,
char *orig_target)
{
char bf_dest[800] = "", *plainMsg;
char contactName[CONTACT_SIZE] = "";
if (IsNULLorEmpty(msg) || IsNULLorEmpty(target))
return;
if (getIniSectionForContact(server, target, contactName) == FALSE)
return;
if (getContactKey(contactName, NULL) == FALSE)
return;
plainMsg = isPlainPrefix(msg);
if (plainMsg) {
signal_continue(4, server, target, plainMsg, orig_target);
return;
}
// generally cut a message to a size of 512 byte, as everything above will never arrive complete anyway
if (strlen(msg) > 512)
msg[512] = '\0';
if (FiSH_encrypt(server, msg, target, bf_dest) == 1) { // message was encrypted
bf_dest[512] = '\0';
signal_continue(4, server, target, bf_dest, orig_target);
}
}
/*
* Pipes all incoming private messages through OTR
*/
void sig_message_private(SERVER_REC *server, const char *msg,
const char *nick, const char *address)
{
int ret;
char *new_msg = NULL;
key_gen_check();
ret = otr_receive(server, msg, nick, &new_msg);
if (ret) {
signal_stop();
goto end;
}
if (!new_msg) {
/* This message was not OTR */
signal_continue(4, server, msg, nick, address);
} else {
/* OTR received message */
signal_continue(4, server, new_msg, nick, address);
}
end:
otrl_message_free(new_msg);
return;
}
/*
* format outgoing (encrypted) messages (add crypt-mark or remove plain-prefix)
*/
void format_msg(SERVER_REC * server, char *msg, char *target, char *orig_target)
{
char contactName[CONTACT_SIZE] = "", myMark[20] =
"", formattedMsg[800] = "";
int i, markPos;
char *plainMsg;
if (IsNULLorEmpty(msg) || IsNULLorEmpty(target))
return;
if (settings_get_bool("process_outgoing") == 0)
return;
if (getIniSectionForContact(server, target, contactName) == FALSE)
return;
if (getContactKey(contactName, NULL) == FALSE)
return;
plainMsg = isPlainPrefix(msg);
if (plainMsg) {
signal_continue(4, server, plainMsg, target, orig_target);
return;
}
// generally cut a message to a size of 512 byte, as everything above will never arrive complete anyway
if (strlen(msg) > 512)
msg[512] = '\0';
// append crypt-mark?
strncpy(myMark, settings_get_str("mark_encrypted"), sizeof(myMark));
if (*myMark != '\0') {
strcpy(formattedMsg, msg);
markPos = settings_get_int("mark_position");
if (markPos == 0)
strcat(formattedMsg, myMark); //append mark at the end
else { // prefix mark
i = strlen(myMark);
memmove(formattedMsg + i, formattedMsg,
strlen(formattedMsg) + 1);
strncpy(formattedMsg, myMark, i);
}
signal_continue(4, server, formattedMsg, target, orig_target);
ZeroMemory(formattedMsg, sizeof(formattedMsg));
}
return;
}
/*
* format outgoing (encrypted) messages (add crypt-mark or remove plain-prefix)
*/
void format_msg(SERVER_REC *server, char *msg, char *target, char *orig_target)
{
char contactName[CONTACT_SIZE]="", myMark[20]="", markPos[20]="", formattedMsg[800]="";
int i;
char *plainMsg;
if (IsNULLorEmpty(msg) || IsNULLorEmpty(target)) return;
if (GetBlowIniSwitch("FiSH", "process_outgoing", "1") == 0) return;
if (GetIniSectionForContact(server, target, contactName)==FALSE) return;
if (LoadKeyForContact(contactName, NULL)==FALSE) return;
plainMsg = IsPlainPrefix(msg);
if (plainMsg) {
signal_continue(4, server, plainMsg, target, orig_target);
return;
}
// generally cut a message to a size of 512 byte, as everything above will never arrive complete anyway
if (strlen(msg) > 512) msg[512]='\0';
// append crypt-mark?
if (GetBlowIniSwitch(contactName, "mark_encrypted", "1") != 0) {
GetPrivateProfileString("FiSH", "mark_encrypted", "", myMark, sizeof(myMark), iniPath); // global setting
if (*myMark != '\0') {
strcpy(formattedMsg, msg);
GetPrivateProfileString("FiSH", "mark_position", "0", markPos, sizeof(markPos), iniPath);
if (*markPos=='0') strcat(formattedMsg, myMark); //append mark at the end
else { // prefix mark
i=strlen(myMark);
memmove(formattedMsg+i, formattedMsg, strlen(formattedMsg)+1);
strncpy(formattedMsg, myMark, i);
}
signal_continue(4, server, formattedMsg, target, orig_target);
ZeroMemory(formattedMsg, sizeof(formattedMsg));
}
}
return;
}
/*
* Decrypt NOTICE messages (and forward DH1080 key-exchange)
*/
void decrypt_notice(SERVER_REC * server, char *msg, char *nick, char *address,
char *target)
{
GString *decrypted;
char *DH1024warn;
if (strncmp(msg, "DH1024_", 7) == 0) {
DH1024warn =
"\002FiSH:\002 Received \002old DH1024\002 public key from you! Please update to latest version: https://github.com/falsovsky/FiSH-irssi";
signal_stop();
irc_send_cmdv((IRC_SERVER_REC *) server, "NOTICE %s :%s\n",
nick, DH1024warn);
signal_emit("message irc own_notice", 3, server, DH1024warn,
nick);
return;
}
if (strncmp(msg, "DH1080_", 7) == 0) {
DH1080_received(server, msg, nick, address, target);
return;
}
#ifdef FiSH_DECRYPT_ZNC_LOGS
if (IsZNCtimestamp(msg))
msg += 11;
#endif
decrypted = g_string_new("");
if (FiSH_decrypt(server, msg, ischannel(*target) ? target : nick, decrypted)) {
signal_continue(5, server, decrypted->str, nick, address, target);
ZeroMemory(decrypted->str, decrypted->len);
}
g_string_free(decrypted, TRUE);
}
static void server_command(const char *data, SERVER_REC *server,
WI_ITEM_REC *item)
{
if (server == NULL) {
/* this command accepts non-connected server too */
server = active_win->connect_server;
}
signal_continue(3, data, server, item);
}
void decrypt_topic(SERVER_REC * server, char *channel, char *topic, char *nick,
char *address)
{
GString *decrypted;
decrypted = g_string_new("");
if (FiSH_decrypt(server, topic, channel, decrypted)) {
signal_continue(5, server, channel, decrypted->str, nick, address);
ZeroMemory(decrypted->str, decrypted->len);
}
g_string_free(decrypted, TRUE);
}
void decrypt_changed_topic(CHANNEL_REC * chan_rec)
{
GString *decrypted;
decrypted = g_string_new("");
if (FiSH_decrypt(chan_rec->server, chan_rec->topic,
chan_rec->name, decrypted)) {
g_free_not_null(chan_rec->topic);
chan_rec->topic = g_strdup(decrypted->str);
signal_continue(1, chan_rec);
ZeroMemory(decrypted->str, decrypted->len);
}
g_string_free(decrypted, TRUE);
}
void decrypt_action(SERVER_REC * server, char *msg, char *nick, char *address,
char *target)
{
GString *decrypted;
if (target == NULL)
return;
decrypted = g_string_new("");
if (FiSH_decrypt(server, msg, ischannel(*target) ? target : nick, decrypted)) {
signal_continue(5, server, decrypted->str, nick, address, target);
ZeroMemory(decrypted->str, decrypted->len);
}
g_string_free(decrypted, TRUE);
}
/*
* Pipes all incoming private messages through OTR
*/
void sig_message_private(SERVER_REC *server, const char *msg,
const char *nick, const char *address)
{
int ret;
char *new_msg = NULL;
key_gen_check();
ret = otr_receive(server, msg, nick, &new_msg);
if (ret) {
signal_stop();
goto end;
}
if (!new_msg) {
/* This message was not OTR */
signal_continue(4, server, msg, nick, address);
} else {
/*
* Check for /me IRC marker and if so, handle it so the user does not
* receive a message beginning with /me but rather let irssi handle it
* as a IRC action.
*/
if (!strncmp(new_msg, OTR_IRC_MARKER_ME, OTR_IRC_MARKER_ME_LEN)) {
signal_stop();
signal_emit("message irc action", 5, server,
new_msg + OTR_IRC_MARKER_ME_LEN, nick, address, nick);
} else {
/* OTR received message */
signal_continue(4, server, new_msg, nick, address);
}
}
end:
otrl_message_free(new_msg);
return;
}
void raw_handler(SERVER_REC * server, char *data)
{
GString *decrypted;
char channel[CONTACT_SIZE], *ptr, *ptr_bak;
int len;
if (IsNULLorEmpty(data))
return;
ptr = strchr(data, ' '); // point to command
if (ptr == NULL)
return;
ptr++;
if (strncmp(ptr, "332 ", 4) != 0)
return; // 332 = TOPIC
ptr_bak = ptr;
ptr = strchr(ptr, '#'); // point to #channel
if (ptr == NULL) {
ptr = strchr(ptr_bak, '&'); // point to &channel
if (ptr == NULL) {
ptr = strchr(ptr_bak, '!'); // point to !channel
if (ptr == NULL)
return;
}
}
len = strchr(ptr, ' ') - ptr;
if (len >= CONTACT_SIZE - 2)
return; // channel string too long, something went wrong
strncpy(channel, ptr, len);
channel[len] = '\0';
ptr = strchr(ptr, ':'); // point to topic msg start
if (ptr == NULL)
return;
ptr++;
decrypted = g_string_new("");
if (FiSH_decrypt(server, ptr, channel, decrypted)) {
g_string_prepend_len(decrypted, data, strlen(data) - strlen(ptr));
signal_continue(2, server, decrypted->str);
ZeroMemory(decrypted->str, decrypted->len);
}
g_string_free(decrypted, TRUE);
}
void decrypt_msg(SERVER_REC * server, char *msg, const char *nick,
const char *address, const char *target)
{
GString *decrypted;
const char *contactPtr, *msg_bak = msg;
char contactName[CONTACT_SIZE] = "";
if (msg == NULL || target == NULL || nick == NULL)
return;
#ifdef FiSH_DECRYPT_ZNC_LOGS
if (IsZNCtimestamp(msg))
msg += 11;
#endif
//channel?
if (ischannel(*target))
contactPtr = target;
else if (strcmp(nick, "-psyBNC") == 0) { // psyBNC log message found // <-psyBNC> Nw~Thu Mar 29 15:02:45 :([email protected]) +OK e3454451hbadA0
msg = strstr(msg, " :(") + 3; // points to nick!ident@host in psybnc log
if (msg == (char *)3)
return;
ExtractRnick(contactName, msg);
msg = strchr(msg, ' ') + 1;
if (msg == (char *)1)
return;
contactPtr = contactName;
} else if (strcmp(nick, "-sBNC") == 0) { // sBNC log message found (PRIVMSG) // <-sBNC> Sun Sep 1 13:37:00 2007 someone ([email protected]): +OK Mp1p8.qYxFN1
if ((msg = strstr(msg, " (")) == NULL)
return;
else
msg--; // points to the last char of the nick
while (*msg != '\0' && *msg != ' ' && msg > msg_bak)
msg--;
if (*msg == ' ')
msg++; // now points to the first char of the nick
else
return;
ExtractRnick(contactName, msg);
if ((msg = strstr(msg, "): ")) == NULL)
return; // find metadata end
msg += 3; // now points to encrypted message
contactPtr = contactName;
} else
contactPtr = nick;
decrypted = g_string_new("");
if (FiSH_decrypt(server, msg, contactPtr, decrypted)) {
if (strncmp(decrypted->str, "\001ACTION ", 8) == 0) {
// ACTION message found
signal_stop();
signal_emit("message irc action", 5, server,
decrypted->str + 8, nick, address, target);
}
else {
signal_continue(5, server, decrypted->str, nick, address, target);
}
ZeroMemory(decrypted->str, decrypted->len);
}
g_string_free(decrypted, TRUE);
}