From 3067b7b267d881963498d277d657e679ac15af45 Mon Sep 17 00:00:00 2001 From: Berke Viktor Date: Fri, 25 Nov 2011 10:23:23 +0100 Subject: rename fishlim main file to avoid confusion --- plugins/fishlim/plugin_xchat.c | 286 +++++++++++++++++++++++++++++++++++++++++ 1 file changed, 286 insertions(+) create mode 100644 plugins/fishlim/plugin_xchat.c (limited to 'plugins/fishlim/plugin_xchat.c') diff --git a/plugins/fishlim/plugin_xchat.c b/plugins/fishlim/plugin_xchat.c new file mode 100644 index 00000000..dd410548 --- /dev/null +++ b/plugins/fishlim/plugin_xchat.c @@ -0,0 +1,286 @@ +/* + + Copyright (c) 2010-2011 Samuel Lidén Borell + + Permission is hereby granted, free of charge, to any person obtaining a copy + of this software and associated documentation files (the "Software"), to deal + in the Software without restriction, including without limitation the rights + to use, copy, modify, merge, publish, distribute, sublicense, and/or sell + copies of the Software, and to permit persons to whom the Software is + furnished to do so, subject to the following conditions: + + The above copyright notice and this permission notice shall be included in + all copies or substantial portions of the Software. + + THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE + AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN + THE SOFTWARE. + +*/ + +#include +#include +#include + +// #pragma GCC visibility push(default) +#include "xchat-plugin.h" +#define XCHAT_MAX_WORDS 32 +// #pragma GCC visibility pop + +//#define EXPORT __attribute((visibility("default"))) +//#define EXPORT + +#include "fish.h" +#include "keystore.h" +#include "irc.h" + +static const char plugin_name[] = "FiSHLiM"; +static const char plugin_desc[] = "Encryption plugin for the FiSH protocol. Less is More!"; +static const char plugin_version[] = "0.0.13"; + +static const char usage_setkey[] = "Usage: SETKEY [] , sets the key for a channel or nick"; +static const char usage_delkey[] = "Usage: DELKEY , deletes the key for a channel or nick"; + +static xchat_plugin *ph; + + +/** + * Returns the path to the key store file. + */ +gchar *get_config_filename() { + return g_build_filename(xchat_get_info(ph, "xchatdirfs"), "blow.ini", NULL); +} + +/** + * Appends data to a string. Returns true if there was sufficient memory. + * Frees *s and returns false if an error occurs. + */ +static bool append(char **s, size_t *length, const char *data) { + size_t datalen = strlen(data); + char *extended = realloc(*s, *length + datalen + 1); + if (!extended) { + free(*s); + return false; + } + memcpy(extended + *length, data, datalen + 1); + *s = extended; + *length += datalen; + return true; +} + + +/*static int handle_debug(char *word[], char *word_eol[], void *userdata) { + xchat_printf(ph, "debug incoming: "); + for (size_t i = 1; word[i] != NULL && word[i][0] != '\0'; i++) { + xchat_printf(ph, ">%s< ", word[i]); + } + xchat_printf(ph, "\n"); + return XCHAT_EAT_NONE; +}*/ + +/** + * Called when a message is to be sent. + */ +static int handle_outgoing(char *word[], char *word_eol[], void *userdata) { + const char *own_nick; + // Encrypt the message if possible + const char *channel = xchat_get_info(ph, "channel"); + char *encrypted = fish_encrypt_for_nick(channel, word_eol[1]); + if (!encrypted) return XCHAT_EAT_NONE; + + // Display message + own_nick = xchat_get_info(ph, "nick"); + xchat_emit_print(ph, "Your Message", own_nick, word_eol[1], NULL); + + // Send message + xchat_commandf(ph, "PRIVMSG %s :+OK %s", channel, encrypted); + + free(encrypted); + return XCHAT_EAT_XCHAT; +} + +/** + * 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 XCHAT_EAT_NONE; + + // Topic (command 332) has an extra parameter + if (!strcmp(command, "332")) w++; + + // Look for encrypted data + ew; + for (ew = w+1; ew < XCHAT_MAX_WORDS-1; ew++) { + const char *s = (ew == w+1 ? word[ew]+1 : word[ew]); + if (strcmp(s, "+OK") == 0) goto has_encrypted_data; + } + return XCHAT_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 < XCHAT_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+" + } else { + // Add unencrypted data (for example, a prefix from a bouncer or bot) + peice = (uw == w+1 ? word[uw]+1 : word[uw]); + } + + if (!append(&message, &length, peice)) goto decrypt_error; + } + free(decrypted); + + // Simulate unencrypted message + //xchat_printf(ph, "simulating: %s\n", message); + xchat_command(ph, message); + + free(message); + free(sender_nick); + return XCHAT_EAT_XCHAT; + + decrypt_error: + free(decrypted); + free(sender_nick); + return XCHAT_EAT_NONE; +} + +/** + * Command handler for /setkey + */ +static int handle_setkey(char *word[], char *word_eol[], void *userdata) { + const char *nick; + const char *key; + + // Check syntax + if (*word[2] == '\0') { + xchat_printf(ph, "%s\n", usage_setkey); + return XCHAT_EAT_XCHAT; + } + + if (*word[3] == '\0') { + // /setkey password + nick = xchat_get_info(ph, "channel"); + key = word_eol[2]; + } else { + // /setkey #channel password + nick = word[2]; + key = word_eol[3]; + } + + // Set password + if (keystore_store_key(nick, key)) { + xchat_printf(ph, "Stored key for %s\n", nick); + } else { + xchat_printf(ph, "\00305Failed to store key in blow.ini\n", nick, key); + } + + return XCHAT_EAT_XCHAT; +} + +/** + * Command handler for /delkey + */ +static int handle_delkey(char *word[], char *word_eol[], void *userdata) { + const char *nick; + + // Check syntax + if (*word[2] == '\0' || *word[3] != '\0') { + xchat_printf(ph, "%s\n", usage_delkey); + return XCHAT_EAT_XCHAT; + } + + nick = word_eol[2]; + + // Delete the given nick from the key store + if (keystore_delete_nick(nick)) { + xchat_printf(ph, "Deleted key for %s\n", nick); + } else { + xchat_printf(ph, "\00305Failed to delete key in blow.ini!\n", nick); + } + + return XCHAT_EAT_XCHAT; +} + +/** + * Returns the plugin name version information. + */ +void xchat_plugin_get_info(const char **name, const char **desc, + const char **version, void **reserved) { + *name = plugin_name; + *desc = plugin_desc; + *version = plugin_version; +} + +/** + * Plugin entry point. + */ +int xchat_plugin_init(xchat_plugin *plugin_handle, + const char **name, + const char **desc, + const char **version, + char *arg) { + ph = plugin_handle; + + /* Send our info to XChat */ + *name = plugin_name; + *desc = plugin_desc; + *version = plugin_version; + + /* Register commands */ + xchat_hook_command(ph, "SETKEY", XCHAT_PRI_NORM, handle_setkey, usage_setkey, NULL); + xchat_hook_command(ph, "DELKEY", XCHAT_PRI_NORM, handle_delkey, usage_delkey, NULL); + + /* Add handlers */ + xchat_hook_command(ph, "", XCHAT_PRI_NORM, handle_outgoing, NULL, NULL); + xchat_hook_server(ph, "NOTICE", XCHAT_PRI_NORM, handle_incoming, NULL); + xchat_hook_server(ph, "PRIVMSG", XCHAT_PRI_NORM, handle_incoming, NULL); + //xchat_hook_server(ph, "RAW LINE", XCHAT_PRI_NORM, handle_debug, NULL); + xchat_hook_server(ph, "TOPIC", XCHAT_PRI_NORM, handle_incoming, NULL); + xchat_hook_server(ph, "332", XCHAT_PRI_NORM, handle_incoming, NULL); + + xchat_printf (ph, "%s plugin loaded\n", plugin_name); + /* Return success */ + return 1; +} + +int xchat_plugin_deinit(void) { + xchat_printf (ph, "%s plugin unloaded\n", plugin_name); + return 1; +} -- cgit 1.4.1