/**
* Called when a channel message or private message is received.
*/
static int handle_incoming(char *word[], char *word_eol[], void *userdata) {
const char *prefix;
const char *command;
const char *recipient;
const char *encrypted;
const char *peice;
char *sender_nick;
char *decrypted;
char *message;
size_t w;
size_t ew;
size_t uw;
size_t length;
if (!irc_parse_message((const char **)word, &prefix, &command, &w))
return HEXCHAT_EAT_NONE;
// Topic (command 332) has an extra parameter
if (!strcmp(command, "332")) w++;
// Look for encrypted data
for (ew = w+1; ew < HEXCHAT_MAX_WORDS-1; ew++) {
const char *s = (ew == w+1 ? word[ew]+1 : word[ew]);
if (strcmp(s, "+OK") == 0 || strcmp(s, "mcps") == 0) goto has_encrypted_data;
}
return HEXCHAT_EAT_NONE;
has_encrypted_data: ;
// Extract sender nick and recipient nick/channel
sender_nick = irc_prefix_get_nick(prefix);
recipient = word[w];
// Try to decrypt with these (the keys are searched for in the key store)
encrypted = word[ew+1];
decrypted = fish_decrypt_from_nick(recipient, encrypted);
if (!decrypted) decrypted = fish_decrypt_from_nick(sender_nick, encrypted);
// Check for error
if (!decrypted) goto decrypt_error;
// Build unecrypted message
message = NULL;
length = 0;
if (!append(&message, &length, "RECV")) goto decrypt_error;
for (uw = 1; uw < HEXCHAT_MAX_WORDS; uw++) {
if (word[uw][0] != '\0' && !append(&message, &length, " ")) goto decrypt_error;
if (uw == ew) {
// Add the encrypted data
peice = decrypted;
uw++; // Skip "OK+"
if (ew == w+1) {
// Prefix with colon, which gets stripped out otherwise
if (!append(&message, &length, ":")) goto decrypt_error;
}
} else {
// Add unencrypted data (for example, a prefix from a bouncer or bot)
peice = word[uw];
}
if (!append(&message, &length, peice)) goto decrypt_error;
}
free(decrypted);
// Simulate unencrypted message
//hexchat_printf(ph, "simulating: %s\n", message);
hexchat_command(ph, message);
free(message);
free(sender_nick);
return HEXCHAT_EAT_HEXCHAT;
decrypt_error:
free(decrypted);
free(sender_nick);
return HEXCHAT_EAT_NONE;
}
/**
* Called when a channel message or private message is received.
*/
static int handle_incoming(char *word[], char *word_eol[], hexchat_event_attrs *attrs, void *userdata) {
const char *prefix;
const char *command;
const char *recipient;
const char *encrypted;
const char *peice;
char *sender_nick;
char *decrypted;
size_t w;
size_t ew;
size_t uw;
char prefix_char = 0;
GString *message;
if (!irc_parse_message((const char **)word, &prefix, &command, &w))
return HEXCHAT_EAT_NONE;
/* Topic (command 332) has an extra parameter */
if (!strcmp(command, "332")) w++;
/* Look for encrypted data */
for (ew = w+1; ew < HEXCHAT_MAX_WORDS-1; ew++) {
const char *s = (ew == w+1 ? word[ew]+1 : word[ew]);
if (*s && (s[1] == '+' || s[1] == 'm')) { prefix_char = *(s++); }
else { prefix_char = 0; }
if (strcmp(s, "+OK") == 0 || strcmp(s, "mcps") == 0) goto has_encrypted_data;
}
return HEXCHAT_EAT_NONE;
has_encrypted_data: ;
/* Extract sender nick and recipient nick/channel */
sender_nick = irc_prefix_get_nick(prefix);
recipient = word[w];
/* Try to decrypt with these (the keys are searched for in the key store) */
encrypted = word[ew+1];
decrypted = fish_decrypt_from_nick(recipient, encrypted);
if (!decrypted) decrypted = fish_decrypt_from_nick(sender_nick, encrypted);
/* Check for error */
if (!decrypted) goto decrypt_error;
/* Build unecrypted message */
message = g_string_sized_new (100); /* TODO: more accurate estimation of size */
g_string_append (message, "RECV");
if (attrs->server_time_utc)
{
GTimeVal tv = { (glong)attrs->server_time_utc, 0 };
char *timestamp = g_time_val_to_iso8601 (&tv);
g_string_append (message, " @time=");
g_string_append (message, timestamp);
g_free (timestamp);
}
for (uw = 1; uw < HEXCHAT_MAX_WORDS; uw++) {
if (word[uw][0] != '\0')
g_string_append_c (message, ' ');
if (uw == ew) {
/* Add the encrypted data */
peice = decrypted;
uw++; /* Skip "OK+" */
if (ew == w+1) {
/* Prefix with colon, which gets stripped out otherwise */
g_string_append_c (message, ':');
}
if (prefix_char) {
g_string_append_c (message, prefix_char);
}
} else {
/* Add unencrypted data (for example, a prefix from a bouncer or bot) */
peice = word[uw];
}
g_string_append (message, peice);
}
g_free(decrypted);
/* Simulate unencrypted message */
/* hexchat_printf(ph, "simulating: %s\n", message->str); */
hexchat_command(ph, message->str);
g_string_free (message, TRUE);
g_free(sender_nick);
return HEXCHAT_EAT_HEXCHAT;
decrypt_error:
g_free(decrypted);
g_free(sender_nick);
return HEXCHAT_EAT_NONE;
}
