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+*.o
+*.so
+nbproject/*
+weeplugins are developed by Olivier Brunel; See COPYING for more
+                    GNU GENERAL PUBLIC LICENSE
+                       Version 3, 29 June 2007
+
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+  16. Limitation of Liability.
+
+  IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
+WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
+THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
+GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
+USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
+DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
+PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
+EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
+SUCH DAMAGES.
+
+  17. Interpretation of Sections 15 and 16.
+
+  If the disclaimer of warranty and limitation of liability provided
+above cannot be given local legal effect according to their terms,
+reviewing courts shall apply local law that most closely approximates
+an absolute waiver of all civil liability in connection with the
+Program, unless a warranty or assumption of liability accompanies a
+copy of the Program in return for a fee.
+
+                     END OF TERMS AND CONDITIONS
+
+            How to Apply These Terms to Your New Programs
+
+  If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+  To do so, attach the following notices to the program.  It is safest
+to attach them to the start of each source file to most effectively
+state the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+    <one line to give the program's name and a brief idea of what it does.>
+    Copyright (C) <year>  <name of author>
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+Also add information on how to contact you by electronic and paper mail.
+
+  If the program does terminal interaction, make it output a short
+notice like this when it starts in an interactive mode:
+
+    <program>  Copyright (C) <year>  <name of author>
+    This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+    This is free software, and you are welcome to redistribute it
+    under certain conditions; type `show c' for details.
+
+The hypothetical commands `show w' and `show c' should show the appropriate
+parts of the General Public License.  Of course, your program's commands
+might be different; for a GUI interface, you would use an "about box".
+
+  You should also get your employer (if you work as a programmer) or school,
+if any, to sign a "copyright disclaimer" for the program, if necessary.
+For more information on this, and how to apply and follow the GNU GPL, see
+<http://www.gnu.org/licenses/>.
+
+  The GNU General Public License does not permit incorporating your program
+into proprietary programs.  If your program is a subroutine library, you
+may consider it more useful to permit linking proprietary applications with
+the library.  If this is what you want to do, use the GNU Lesser General
+Public License instead of this License.  But first, please read
+<http://www.gnu.org/philosophy/why-not-lgpl.html>.
+
+.PHONY = all install uninstall clean
+
+WARNINGS := -Wall -Wextra -pedantic -Wshadow -Wpointer-arith -Wcast-align \
+	-Wwrite-strings -Wmissing-prototypes -Wmissing-declarations \
+	-Wredundant-decls -Wnested-externs -Winline -Wno-long-long \
+	-Wuninitialized -Wconversion -Wstrict-prototypes
+CFLAGS := -g -std=c99 -fPIC $(WARNINGS)
+
+
+all: weenick.so weereact.so
+
+weereact.o: weereact.c
+	$(CC) $(CFLAGS) -O2 -c `pkg-config --cflags glib-2.0` -o weereact.o weereact.c
+
+%.o: %.c
+	$(CC) $(CFLAGS) -O2 -c -o $@ $<
+
+weenick.so: weenick.o
+	$(CC) $(CFLAGS) -shared -o weenick.so weenick.o
+
+weereact.so: weereact.o
+	$(CC) $(CFLAGS) -shared `pkg-config --libs glib-2.0` -o weereact.so weereact.o
+
+clean:
+	rm -f *.o *.so
+
+install:
+	$(INSTALL) -s -m755 weenick.so /usr/lib/weechat/plugins/weenick.so
+	$(INSTALL) -s -m755 weereact.so /usr/lib/weechat/plugins/weereact.so
+
+uninstall:
+	rm /usr/lib/weechat/plugins/weenick.so
+	rm /usr/lib/weechat/plugins/weereact.so
+# weeplugins - Plugins for WeeChat
+
+weeplugins are plugins for the IRC client [WeeChat](http://www.weechat.org/ "WeeChat, the extensible chat client.").
+
+## weenick: Provides support for common NickServ operations
+
+weenick allows you to define global and/or server-specific options to get automatically identified with services (NickServ).
+
+Upon connection, if the nick is already in use the GHOST command will be sent, and once it has been killed you'll change nick. The IDENTIFY command is then sent.
+
+You can also have command(s) executed once identified.
+
+ 
+## weereact: Triggers commands in reaction to messages
+
+weereact allows you to have commands be executed by reacting on messages you receive (or send). They can be filtered by server, channel, user, and content (through perl-compatible regex).
+
+It also introduces a new command - `/tobuffer` - to send text (or commands) to a specific buffer.
+/**
+ * weeplugins - Copyright (C) 2012 Olivier Brunel
+ *
+ * weenick.c
+ * Copyright (C) 2012 Olivier Brunel <i.am.jack.mail@gmail.com>
+ * 
+ * This file is part of weeplugins.
+ *
+ * weeplugins is free software: you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License as published by the Free Software
+ * Foundation, either version 3 of the License, or (at your option) any later
+ * version.
+ *
+ * weeplugins is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.
+ * See the GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * weeplugins. If not, see http://www.gnu.org/licenses/
+ */
+
+/* C */
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+
+/* WeeChat */
+#include <weechat/weechat-plugin.h>
+
+#define _UNUSED_                            __attribute__ ((unused)) 
+#define BUF_SIZE                            255
+
+/* prefixes for our options: default, or per-server */
+#define OPT_PREFIX_DEFAULT                  "server_default"
+#define OPT_PREFIX_SERVER                   "server."
+
+/* options */
+#define OPT_NICK                            ".nick"
+#define OPT_NICK_DESC                       "registered nickname"
+
+#define OPT_PASSWORD                        ".password"
+#define OPT_PASSWORD_DESC                   "password to identify/kill ghosts"
+
+#define OPT_COMMAND                         ".command"
+#define OPT_COMMAND_DESC                    "command(s) to get processed upon identification"
+
+#define OPT_NICKSERV_NICK                   ".nickserv_nick"
+#define OPT_NICKSERV_NICK_DESC              "nickname to send messages to"
+#define OPT_NICKSERV_NICK_DEFAULT           "NickServ"
+
+#define OPT_NICKSERV_MSG_REGISTERED         ".nickserv_registered"
+#define OPT_NICKSERV_MSG_REGISTERED_DESC    "string to identify notice that nick is registered"
+#define OPT_NICKSERV_MSG_REGISTERED_DEFAULT "nickname is registered"
+
+#define OPT_NICKSERV_MSG_GHOST              ".nickserv_ghost_killed"
+#define OPT_NICKSERV_MSG_GHOST_DESC         "string to identify notice that ghost was killed"
+#define OPT_NICKSERV_MSG_GHOST_DEFAULT      "ghost with your nick has been killed"
+
+#define OPT_NICKSERV_MSG_IDENTIFIED         ".nickserv_identified"
+#define OPT_NICKSERV_MSG_IDENTIFIED_DESC    "string to identify notice that nick was identified"
+#define OPT_NICKSERV_MSG_IDENTIFIED_DEFAULT "password accepted"
+
+#define OPT_NICKSERV_MSG_FAILED             ".nickserv_failed"
+#define OPT_NICKSERV_MSG_FAILED_DESC        "string to identify notice that password is wrong"
+#define OPT_NICKSERV_MSG_FAILED_DEFAULT     "access denied"
+
+
+
+WEECHAT_PLUGIN_NAME ("weenick")
+WEECHAT_PLUGIN_AUTHOR ("jjacky")
+WEECHAT_PLUGIN_DESCRIPTION ("Provides support for common NickServ operations")
+WEECHAT_PLUGIN_VERSION ("0.1")
+WEECHAT_PLUGIN_LICENSE ("GPL3")
+
+static struct t_weechat_plugin *weechat_plugin = NULL;
+
+static const char *
+get_option_for_server (const char *server, const char *option)
+{
+    char buf[BUF_SIZE];
+    
+    snprintf (buf, BUF_SIZE, "%s%s%s", OPT_PREFIX_SERVER, server, option);
+    if (!weechat_config_is_set_plugin (buf))
+    {
+        /* no option for this server, fallback on default */
+        snprintf (buf, BUF_SIZE, "%s%s", OPT_PREFIX_DEFAULT, option);
+        if (!weechat_config_is_set_plugin (buf))
+        {
+            return NULL;
+        }
+    }
+    return weechat_config_get_plugin (buf);
+}
+
+static int
+get_nickserv_msg_for_server (const char *server, const char *option, char *buf)
+{
+    const char *value;
+    
+    if (!(value = get_option_for_server (server, option)))
+    {
+        return 0;
+    }
+    
+    snprintf (buf, BUF_SIZE, "*%s*", value);
+    return 1;
+}
+
+static struct t_gui_buffer *
+get_buffer (const char *signal, char *server_name)
+{
+    struct t_gui_buffer *buffer;
+    char  server[BUF_SIZE];
+    char *s;
+    size_t len;
+    
+    for (s = (char *) signal, len = 0; *s != ','; ++s, ++len)
+        ;
+    len += 8; /* 8 = strlen ("server.") + 1 for NULL */
+    /* to be safe, but it should always be under 255 chars */
+    if (len >= BUF_SIZE)
+    {
+        return NULL;
+    }
+    snprintf (server, len, "server.%s", signal);
+    
+    /* copy server name if asked for */
+    if (server_name)
+    {
+        sprintf (server_name, "%s", server + 7);
+    }
+    
+    /* we'll return the found buffer, or NULL if not found */
+    buffer = weechat_buffer_search ("irc", server);
+    return buffer;
+}
+
+static int
+in_use_cb (void *data _UNUSED_, const char *signal, const char *type_data _UNUSED_,
+           void *signal_data)
+{
+    /*  signal          server,irc_in2_433
+     *  signal_data     :nick!ident@host.name 433 yournick wantnick :message
+     */
+    
+    struct t_gui_buffer *buffer;
+    char  server[BUF_SIZE];
+    char  buf[BUF_SIZE];
+    const char *want_nick;
+    const char *nickserv;
+    const char *password;
+    char *s;
+    size_t l;
+    
+    /* get the server's name & its buffer */
+    if (!(buffer = get_buffer (signal, server)))
+    {
+        return WEECHAT_RC_ERROR;
+    }
+    
+    /* get the nick we want */
+    if (!(want_nick = get_option_for_server (server, OPT_NICK)))
+    {
+        /* not set, we're done */
+        return WEECHAT_RC_OK;
+    }
+    
+    /* get our nickserv password */
+    if (!(password = get_option_for_server (server, OPT_PASSWORD)))
+    {
+        /* not set, we're done */
+        return WEECHAT_RC_OK;
+    }
+    
+    /* get nickserv's nick */
+    if (!(nickserv = get_option_for_server (server, OPT_NICKSERV_NICK)))
+    {
+        /* not set, we're done */
+        return WEECHAT_RC_OK;
+    }
+    
+    /* check the new nick (taken) is our want_nick */
+    if (!(s = strstr (signal_data, " 433 ")))
+    {
+        return WEECHAT_RC_ERROR;
+    }
+    if (!(s = strchr (s + 5, ' '))) /* 5 = strlen (" 433 ") */
+    {
+        return WEECHAT_RC_ERROR;
+    }
+    l = strlen (want_nick);
+    ++s;
+    if (strncmp (s, want_nick, l) != 0 || s[l] != ' ')
+    {
+        /* the nick we tried to get isn't our want_nick, done */
+        return WEECHAT_RC_OK;
+    }
+    /* let's kill that ghost */
+    snprintf (buf, BUF_SIZE, "/msg %s GHOST %s %s", nickserv, want_nick, password);
+    weechat_command (buffer, buf);
+    return WEECHAT_RC_OK;
+}
+
+static int
+notice_cb (void *data _UNUSED_, const char *signal, const char *type_data _UNUSED_,
+           void *_signal_data)
+{
+    /*  signal          server,irc_in2_notice
+     *  signal_data     :nick!ident@host.name NOTICE yournick :message
+     */
+    
+    char *signal_data = _signal_data;
+    struct t_gui_buffer *buffer;
+    char  server[BUF_SIZE];
+    char  buf[BUF_SIZE];
+    char *msg;
+    char *cur_nick;
+    const char *want_nick;
+    const char *nickserv;
+    const char *password;
+    char *s;
+    size_t l;
+    
+    /* get the server's name & its buffer */
+    if (!(buffer = get_buffer (signal, server)))
+    {
+        return WEECHAT_RC_ERROR;
+    }
+    
+    /* get the nick we want */
+    if (!(want_nick = get_option_for_server (server, OPT_NICK)))
+    {
+        /* not set, we're done */
+        return WEECHAT_RC_OK;
+    }
+    
+    /* get our nickserv password */
+    if (!(password = get_option_for_server (server, OPT_PASSWORD)))
+    {
+        /* not set, we're done */
+        return WEECHAT_RC_OK;
+    }
+    
+    /* get nickserv's nick */
+    if (!(nickserv = get_option_for_server (server, OPT_NICKSERV_NICK)))
+    {
+        /* not set, we're done */
+        return WEECHAT_RC_OK;
+    }
+    
+    /* make sure the sender is NickServ */
+    if (!(s = strchr (signal_data, '!')))
+    {
+        return WEECHAT_RC_ERROR;
+    }
+    l = strlen (nickserv);
+    ++signal_data;
+    if (weechat_strncasecmp (signal_data, nickserv, (int) l) != 0
+        || ((char *) signal_data)[l] != '!')
+    {
+        /* ignore every other notice */
+        return WEECHAT_RC_OK;
+    }
+    
+    /* determine whether we have our desired nick or not */
+    if (!(s = strstr (signal_data, " NOTICE ")))
+    {
+        return WEECHAT_RC_ERROR;
+    }
+    cur_nick = s + 8; /* 8 = strlen (" NOTICE ") */
+    msg = strchr (s, ':');
+    if (!(s = strchr (cur_nick, ' ')) || s[1] != ':')
+    {
+        return WEECHAT_RC_ERROR;
+    }
+    l = strlen (want_nick);
+    if (weechat_strncasecmp (cur_nick, want_nick, (int) l) != 0
+        || cur_nick[l] != ' ')
+    {
+        /* not our nick; look if a ghost was just killed */
+        if (get_nickserv_msg_for_server (server, OPT_NICKSERV_MSG_GHOST, buf))
+        {
+            if (weechat_string_match (msg, buf, 0))
+            {
+                /* ghost was killed, grab our nick back */
+                snprintf (buf, BUF_SIZE, "/nick %s", want_nick);
+                weechat_command (buffer, buf);
+                return WEECHAT_RC_OK;
+            }
+        }
+        return WEECHAT_RC_OK;
+    }
+    
+    /* we have our desired nick; do we need to identify? */
+    if (get_nickserv_msg_for_server (server, OPT_NICKSERV_MSG_REGISTERED, buf))
+    {
+        if (weechat_string_match (msg, buf, 0))
+        {
+            /* identify ourself */
+            snprintf (buf, BUF_SIZE, "/msg %s IDENTIFY %s",
+                        nickserv, password);
+            weechat_command (buffer, buf);
+            return WEECHAT_RC_OK;
+        }
+    }
+    /* or did we just get identified? */
+    if (get_nickserv_msg_for_server (server, OPT_NICKSERV_MSG_IDENTIFIED, buf))
+    {
+        if (weechat_string_match (msg, buf, 0))
+        {
+            /* trigger command(s) */
+            if ((s = (char *) get_option_for_server (server, OPT_COMMAND)))
+            {
+                char **commands = weechat_string_split_command (s, ';');
+                int i;
+                for (i = 0; commands[i]; ++i)
+                {
+                    if (weechat_string_is_command_char (commands[i]))
+                    {
+                        weechat_command (buffer, commands[i]);
+                    }
+                }
+                weechat_string_free_split_command (commands);
+            }
+            return WEECHAT_RC_OK;
+        }
+    }
+    /* password refused, from an attempt to identify or kill ghost */
+    if (get_nickserv_msg_for_server (server, OPT_NICKSERV_MSG_FAILED, buf))
+    {
+        if (weechat_string_match (msg, buf, 0))
+        {
+            weechat_printf (NULL, "%sPassword failed", weechat_prefix ("error"));
+            return WEECHAT_RC_OK;
+        }
+    }
+    return WEECHAT_RC_OK;
+}
+
+static int
+welcome_cb (void *data _UNUSED_, const char *signal, const char *type_data _UNUSED_,
+            void *signal_data)
+{
+    /*  signal          server,irc_in2_001
+     *  signal_data     :server.addr 001 NICK :Welcome message
+     */
+    
+    struct t_gui_buffer *buffer;
+    char  server[BUF_SIZE];
+    char *cur_nick;
+    int   cur_nick_len;
+    const char *want_nick;
+    char *s;
+    
+    /* get the server's name & its buffer */
+    if (!(buffer = get_buffer (signal, server)))
+    {
+        return WEECHAT_RC_ERROR;
+    }
+    
+    /* get the nick we want */
+    if (!(want_nick = get_option_for_server (server, OPT_NICK)))
+    {
+        /* not set, we're done */
+        return WEECHAT_RC_OK;
+    }
+    
+    /* get the nick we have */
+    if (!(s = strchr (signal_data, ' ')) || strncmp (++s, "001 ", 4) != 0)
+    {
+        return WEECHAT_RC_ERROR;
+    }
+    cur_nick = s;
+    if (!(s = strchr (cur_nick, ' ')))
+    {
+        return WEECHAT_RC_ERROR;
+    }
+    cur_nick_len = (int) (s - cur_nick);
+    
+    if (strncmp (want_nick, cur_nick, (size_t) cur_nick_len) == 0
+        && want_nick[cur_nick_len] == '\0')
+    {
+        /* match, we're good */
+        return WEECHAT_RC_OK;
+    }
+    
+    /* let's try to change our nick then */
+    char cmd[BUF_SIZE];
+    snprintf (cmd, BUF_SIZE, "/nick %s", want_nick);
+    weechat_command (buffer, cmd);
+    
+    return WEECHAT_RC_OK;
+}
+
+int
+weechat_plugin_init (struct t_weechat_plugin *plugin,
+                     int argc _UNUSED_,
+                     char *argv[] _UNUSED_)
+{
+    char buf[BUF_SIZE];
+    
+    weechat_plugin = plugin;
+
+    /* set descriptions for our options, and default value when applicable */
+    
+    snprintf (buf, BUF_SIZE, "%s%s", OPT_PREFIX_DEFAULT, OPT_NICK);
+    weechat_config_set_desc_plugin (buf, OPT_NICK_DESC);
+    
+    snprintf (buf, BUF_SIZE, "%s%s", OPT_PREFIX_DEFAULT, OPT_PASSWORD);
+    weechat_config_set_desc_plugin (buf, OPT_PASSWORD_DESC);
+    
+    snprintf (buf, BUF_SIZE, "%s%s", OPT_PREFIX_DEFAULT, OPT_COMMAND);
+    weechat_config_set_desc_plugin (buf, OPT_COMMAND_DESC);
+    
+    snprintf (buf, BUF_SIZE, "%s%s", OPT_PREFIX_DEFAULT, OPT_NICKSERV_NICK);
+    weechat_config_set_desc_plugin (buf, OPT_NICKSERV_NICK_DESC);
+    if (!weechat_config_is_set_plugin (buf))
+    {
+        weechat_config_set_plugin (buf, OPT_NICKSERV_NICK_DEFAULT);
+    }
+    
+    snprintf (buf, BUF_SIZE, "%s%s", OPT_PREFIX_DEFAULT, OPT_NICKSERV_MSG_REGISTERED);
+    weechat_config_set_desc_plugin (buf, OPT_NICKSERV_MSG_REGISTERED_DESC);
+    if (!weechat_config_is_set_plugin (buf))
+    {
+        weechat_config_set_plugin (buf, OPT_NICKSERV_MSG_REGISTERED_DEFAULT);
+    }
+    
+    snprintf (buf, BUF_SIZE, "%s%s", OPT_PREFIX_DEFAULT, OPT_NICKSERV_MSG_GHOST);
+    weechat_config_set_desc_plugin (buf, OPT_NICKSERV_MSG_GHOST_DESC);
+    if (!weechat_config_is_set_plugin (buf))
+    {
+        weechat_config_set_plugin (buf, OPT_NICKSERV_MSG_GHOST_DEFAULT);
+    }
+    
+    snprintf (buf, BUF_SIZE, "%s%s", OPT_PREFIX_DEFAULT, OPT_NICKSERV_MSG_IDENTIFIED);
+    weechat_config_set_desc_plugin (buf, OPT_NICKSERV_MSG_IDENTIFIED_DESC);
+    if (!weechat_config_is_set_plugin (buf))
+    {
+        weechat_config_set_plugin (buf, OPT_NICKSERV_MSG_IDENTIFIED_DEFAULT);
+    }
+    
+    snprintf (buf, BUF_SIZE, "%s%s", OPT_PREFIX_DEFAULT, OPT_NICKSERV_MSG_FAILED);
+    weechat_config_set_desc_plugin (buf, OPT_NICKSERV_MSG_FAILED_DESC);
+    if (!weechat_config_is_set_plugin (buf))
+    {
+        weechat_config_set_plugin (buf, OPT_NICKSERV_MSG_FAILED_DEFAULT);
+    }
+    
+    
+    /* hook to message RPL_WELCOME (001) */
+    weechat_hook_signal ("*,irc_in2_001", &welcome_cb, NULL);
+    
+    /* hook to message ERR_NICKNAMEINUSE (433) */
+    weechat_hook_signal ("*,irc_in2_433", &in_use_cb, NULL);
+    
+    /* hook to message NOTICE */
+    weechat_hook_signal ("*,irc_in2_notice", &notice_cb, NULL);
+    
+    return WEECHAT_RC_OK;
+}
+
+int
+weechat_plugin_end (struct t_weechat_plugin *plugin _UNUSED_)
+{
+    return WEECHAT_RC_OK;
+}
+/**
+ * weeplugins - Copyright (C) 2012 Olivier Brunel
+ *
+ * weereact.c
+ * Copyright (C) 2012 Olivier Brunel <i.am.jack.mail@gmail.com>
+ * 
+ * This file is part of weeplugins.
+ *
+ * weeplugins is free software: you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License as published by the Free Software
+ * Foundation, either version 3 of the License, or (at your option) any later
+ * version.
+ *
+ * weeplugins is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 
+ * FITNESS FOR A PARTICULAR PURPOSE.
+ * See the GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * weeplugins. If not, see http://www.gnu.org/licenses/
+ */
+
+/* for strdup() in string.h */
+#define _BSD_SOURCE
+
+/* C */
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+
+/* GLib (for PCRE) */
+#include <glib.h>
+
+/* WeeChat */
+#include <weechat/weechat-plugin.h>
+
+#define _UNUSED_                            __attribute__ ((unused)) 
+#define BUF_SIZE                            255
+
+
+
+WEECHAT_PLUGIN_NAME ("weereact")
+WEECHAT_PLUGIN_AUTHOR ("jjacky")
+WEECHAT_PLUGIN_DESCRIPTION ("Triggers commands in reaction to messages")
+WEECHAT_PLUGIN_VERSION ("0.1")
+WEECHAT_PLUGIN_LICENSE ("GPL3")
+
+static struct t_weechat_plugin *weechat_plugin = NULL;
+static GRegex *regex_strip_color;
+
+typedef struct _react_t {
+    char            *on;
+    char            *to;
+    char            *by;
+    char            *is;
+    GRegex          *regex;
+    char           **cmd;
+    struct _react_t *next;
+} react_t;
+
+static char *
+trim (char *str)
+{
+    char *s, *e;
+    
+    if (!str || *str == '\0')
+    {
+        return str;
+    }
+    
+    for ( ; *str == ' ' || *str == '\t'; ++str)
+        ;
+    s = str;
+    for (e = str; *str; ++str)
+    {
+        if (*str != ' ' && *str != '\t')
+        {
+            e = str;
+        }
+    }
+    *++e = '\0';
+    
+    return s;
+}
+
+static react_t *react = NULL;
+
+static inline void
+add_item (react_t *new, int nb_used, char **cmd)
+{
+    react_t *r;
+    int i;
+    
+    r = malloc (sizeof (*r));
+    memcpy (r, new, sizeof (*r));
+    r->cmd = calloc (sizeof (r->cmd), (size_t) nb_used + 1);
+    for (i = 0; i < nb_used; ++i)
+    {
+        r->cmd[i] = cmd[i];
+    }
+    if (react)
+    {
+        react_t *n;
+        for (n = react; n->next; n = n->next)
+            ;
+        n->next = r;
+    }
+    else
+    {
+        react = r;
+    }
+}
+
+static int
+load_config (void)
+{
+    char  file[BUF_SIZE];
+    char *data;
+    
+    snprintf (file, BUF_SIZE, "%s/weereact.conf",
+              weechat_info_get ("weechat_dir", NULL));
+    if (!(data = weechat_file_get_content (file)))
+    {
+        weechat_printf (NULL, "%sCould not load config from %s",
+                        weechat_prefix ("error"), file);
+        return 0;
+    }
+    
+    char *s, *e;
+    size_t l;
+    int linenum = 0;
+    
+    int is_item = 0;
+    react_t item;
+    int nb_alloc = 0;
+    int nb_used = 0;
+    char **cmd = NULL;
+    
+    s = data;
+    while ((e = strchr (s, '\n')) || (*s))
+    {
+        ++linenum;
+        if (e)
+        {
+            *e = '\0';
+        }
+        s = trim (s);
+        if (*s == '#' || *s == '\0')
+        {
+            goto next;
+        }
+        
+        l = strlen (s);
+        if (*s == '[' && s[l - 1] == ']')
+        {
+            if (is_item)
+            {
+                add_item (&item, nb_used, cmd);
+            }
+            
+            is_item = 1;
+            memset (&item, '\0', sizeof (react_t));
+            nb_used = 0;
+            goto next;
+        }
+        else if (!is_item)
+        {
+            weechat_printf (NULL, "%sError in %s, line %d: not in section",
+                            weechat_prefix ("error"), file, linenum);
+            goto next;
+        }
+        
+        char *val;
+        if (!(val = strchr (s, '=')))
+        {
+            goto next;
+        }
+        *val++ = '\0';
+        
+        if (strcmp ("on", s) == 0)
+        {
+            if (strcmp ("*", val) != 0)
+            {
+                item.on = strdup (val);
+            }
+        }
+        else if (strcmp ("to", s) == 0)
+        {
+            if (strcmp ("*", val) != 0)
+            {
+                item.to = strdup (val);
+            }
+        }
+        else if (strcmp ("by", s) == 0)
+        {
+            if (strcmp ("*", val) != 0)
+            {
+                item.by = strdup (val);
+            }
+        }
+        else if (strcmp ("is", s) == 0)
+        {
+            item.is = strdup (val);
+        }
+        else if (strcmp ("do", s) == 0)
+        {
+            if (++nb_used >= nb_alloc)
+            {
+                nb_alloc += 5;
+                cmd = realloc (cmd, sizeof (*cmd) * (size_t) nb_alloc);
+            }
+            cmd[nb_used - 1] = strdup (val);
+        }
+        
+        next:
+        if (e)
+        {
+            s = e + 1;
+        }
+        else
+        {
+            break;
+        }
+    }
+    if (is_item)
+    {
+        add_item (&item, nb_used, cmd);
+    }
+    
+    free (data);
+    return 1;
+}
+
+static void
+free_react (void)
+{
+    react_t *r;
+    int i;
+    while (react)
+    {
+        free (react->on);
+        free (react->to);
+        free (react->by);
+        free (react->is);
+        if (react->regex)
+        {
+            g_regex_unref (react->regex);
+        }
+        i = sizeof (react->cmd) / sizeof (react->cmd[0]);
+        for ( ; i >= 0; --i)
+        {
+            free (react->cmd[i]);
+        }
+        free (react->cmd);
+        r = react;
+        react = react->next;
+        free (r);
+    }
+}
+
+static char *
+str_replace (const char *source, const char *replacements[])
+{
+    char  *s;
+    int    i;
+    int    l = sizeof (replacements) / sizeof (replacements[0]);
+    
+    char  *str;
+    size_t alloc;
+    size_t length;
+    
+    str = strdup (source);
+    length = strlen (str);
+    alloc = length;
+    
+    for (i = 0; i < l; i += 2)
+    {
+        if ((s = strstr (str, replacements[i])))
+        {
+            size_t len_match       = strlen (replacements[i]);
+            size_t len_replacement = strlen (replacements[i + 1]);
+            
+            /* make sure there's room */
+            if (length + (len_replacement - len_match) >= alloc)
+            {
+                alloc += len_replacement + 255;
+                if (!(str = realloc (str, sizeof (*str) * alloc)))
+                {
+                    free (str);
+                    return NULL;
+                }
+            }
+            /* move what's after the match */
+            memmove (s + len_replacement, s + len_match, strlen (s + len_match));
+            /* replace match with replacement */
+            memcpy (s, replacements[i + 1], len_replacement);
+        }
+    }
+    
+    return str;
+}
+
+static void
+process_signal (const char *on, const char *to, const char *by,
+                const char *msg, struct t_gui_buffer *buffer)
+{
+    react_t *r;
+    GError *error = NULL;
+    GMatchInfo *match_info;
+    char **command;
+    char *cmd;
+    char *s;
+    
+    for (r = react; r; r = r->next)
+    {
+        /* check server */
+        if (r->on && !weechat_string_match (on, r->on, 0))
+        {
+            continue;
+        }
+        /* check channel */
+        if (r->to && !weechat_string_match (to, r->to, 0)
+            /* if by is set, this is an incoming message. if r->to is "-"
+             * and destination (to) doesn't start with a # (i.e. is not a
+             * channel), it is indeed a PM to us, and a match after all */
+            && !(by && r->to[0] == '-' && r->to[1] == '\0' && to[0] != '#'))
+        {
+            continue;
+        }
+        /* check author -- if by is NULL, we're sending this out */
+        if (r->by && (
+                (!by && !(r->by[0] == '-' && r->by[1] == '\0'))
+             || ( by && !weechat_string_match (by, r->by, 0))
+            ))
+        {
+            continue;
+        }
+        /* check message */
+        if (r->is)
+        {
+            if (!r->regex)
+            {
+                r->regex = g_regex_new (r->is, G_REGEX_CASELESS | G_REGEX_OPTIMIZE,
+                                        0, &error);
+                if (error)
+                {
+                    weechat_printf (NULL, "%sFailed to compile regex: %s",
+                                    weechat_prefix ("error"), error->message);
+                    g_clear_error (&error);
+                    r->regex = NULL;
+                    continue;
+                }
+            }
+            if (!g_regex_match (r->regex, msg, 0, &match_info))
+            {
+                g_match_info_free (match_info);
+                continue;
+            }
+        }
+        /* check regex if needed & process commands */
+        for (command = r->cmd; *command; ++command)
+        {
+            if (r->is)
+            {
+                gboolean has_references = FALSE;
+                /* are there back-references needing to be replaced? */
+                if (g_regex_check_replacement (*command, &has_references, NULL)
+                    && has_references)
+                {
+                    s = g_match_info_expand_references (match_info, *command, &error);
+                    if (error)
+                    {
+                        weechat_printf (NULL, "%sFailed to expand references: %s",
+                                        weechat_prefix ("error"), error->message);
+                        g_clear_error (&error);
+                        continue;
+                    }
+                }
+                else
+                {
+                    s = *command;
+                }
+                
+                const char *rep[6] = { "$on", on, "$to", to, "$by", by };
+                if (!(cmd = str_replace (s, rep)))
+                {
+                    if (has_references)
+                    {
+                        g_free (s);
+                    }
+                    continue;
+                }
+                if (has_references)
+                {
+                    g_free (s);
+                }
+                weechat_command (buffer, cmd);
+                free (cmd);
+            }
+            else
+            {
+                weechat_command (buffer, *command);
+            }
+        }
+        g_match_info_free (match_info);
+    }
+}
+
+static int
+msg_in_cb (void *data _UNUSED_, const char *signal, const char *type_data _UNUSED_,
+           void *signal_data)
+{
+    /*  signal          server,irc_in2_PRIVMSG
+     *  signal_data     :nick!host PRIVMSG #chan :message
+     */
+    
+    char buf[BUF_SIZE]; /* will hold on, to & by */
+    char *on;
+    char *to = NULL;
+    char *by;
+    char *s, *ss;
+    int i;
+    struct t_gui_buffer *buffer;
+    
+    /* quick regex to remove color codes & whatnot */
+    gchar *msg;
+    if (!(msg = g_regex_replace (regex_strip_color, signal_data, -1, 0, "", 0, NULL)))
+    {
+        return WEECHAT_RC_ERROR;
+    }
+
+    /* on: server name */
+    on = buf;
+    for (s = (char *) signal, i = 0; *s != ','; ++s, ++i)
+    {
+        on[i] = *s;
+    }
+    /* we put a dot for now, to get server.channel since that's the string
+     * we need to search for the irc buffer. we'll turn it into a NULL then */
+    on[i] = '.';
+    
+    /* locate space before PRIVMSG */
+    if (!(s = strchr (msg, ' ')))
+    {
+        /* should not happen */
+        g_free (msg);
+        return WEECHAT_RC_ERROR;
+    }
+    /* 9 = strlen (" PRIVMSG ") */
+    ss = s + 9;
+    if (*ss == '#')
+    {
+        /* to: channel/nick */
+        to = &on[i + 1];
+        for (s = ss, i = 0; *s != ' '; ++s, ++i)
+        {
+            to[i] = *s;
+        }
+        to[i] = '\0';
+        s = to - 1;
+    }
+    else
+    {
+        /* by: nick */
+        by = &on[i + 1];
+        for (s = msg + 1, i = 0; *s != '!'; ++s, ++i)
+        {
+            by[i] = *s;
+        }
+        by[i] = '\0';
+        s = by - 1;
+    }
+    /* get buffer to send commands to. in buf we now have server.channel which
+    * is the name of the irc buffer */
+    buffer = weechat_buffer_search ("irc", buf);
+    /* go turn the dot into a NULL, to properly end on (server name) */
+    *s = '\0';
+    if (to)
+    {
+        /* by: nick */
+        by = &to[i + 1];
+        for (s = msg + 1, i = 0; *s != '!'; ++s, ++i)
+        {
+            by[i] = *s;
+        }
+        by[i] = '\0';
+    }
+    else
+    {
+        /* to: channel/nick */
+        to = &by[i + 1];
+        for (s = ss, i = 0; *s != ' '; ++s, ++i)
+        {
+            to[i] = *s;
+        }
+        to[i] = '\0';
+    }
+    
+    process_signal (on, to, by, strchr (msg + 1, ':') + 1, buffer);
+    g_free (msg);
+    return WEECHAT_RC_OK;
+}
+
+static int
+msg_out_cb (void *data _UNUSED_, const char *signal, const char *type_data _UNUSED_,
+            void *signal_data)
+{
+    /*  signal          server,irc_out_PRIVMSG
+     *  signal_data     PRIVMSG #chan :message
+     */
+    
+    char  buf[BUF_SIZE];
+    char *s;
+    char *on;
+    char *to;
+    int i;
+    struct t_gui_buffer *buffer;
+    
+    /* on: server name */
+    on = buf;
+    for (s = (char *) signal, i = 0; *s != ','; ++s, ++i)
+    {
+        on[i] = *s;
+    }
+    /* we put a dot for now, to get server.channel since that's the string
+     * we need to search for the irc buffer. we'll turn it into a NULL then */
+    on[i] = '.';
+    
+    /* to: channel/nick */
+    to = &on[i + 1];
+    /* 8 = strlen ("PRIVMSG ") */
+    for (s = (char *) signal_data + 8, i = 0; *s != ' '; ++s, ++i)
+    {
+        to[i] = *s;
+    }
+    to[i] = '\0';
+    
+    /* get buffer to send commands to. in buf we now have server.channel which
+     * is the name of the irc buffer */
+    buffer = weechat_buffer_search ("irc", buf);
+    /* go turn the dot into a NULL, to properly end on (server name) */
+    *(to - 1) = '\0';
+    
+    process_signal (on, to, NULL, strchr (signal_data + 1, ':') + 1, buffer);
+    return WEECHAT_RC_OK;
+}
+
+static int
+tobuffer_cb (void *data _UNUSED_, struct t_gui_buffer *buffer _UNUSED_,
+             int argc, char **argv, char **argv_eol)
+{
+    struct t_gui_buffer *dest_buffer;
+    char *s;
+    
+    if (argc < 3)
+    {
+        return WEECHAT_RC_ERROR;
+    }
+    
+    if (!(s = strchr (argv[1], '.')))
+    {
+        weechat_printf (NULL, "%sBuffer name must be plugin.buffer",
+                        weechat_prefix ("error"));
+        return WEECHAT_RC_ERROR;
+    }
+    *s = '\0';
+    if (!(dest_buffer = weechat_buffer_search (argv[1], s + 1)))
+    {
+        weechat_printf (NULL, "%sBuffer %s for plugin %s not found",
+                        weechat_prefix ("error"), s + 1, argv[1]);
+        return WEECHAT_RC_ERROR;
+    }
+    weechat_command (dest_buffer, argv_eol[2]);
+    
+    return WEECHAT_RC_OK;
+}
+
+static int
+reload_cb (void *data _UNUSED_, struct t_gui_buffer *buffer _UNUSED_,
+           const char *command _UNUSED_)
+{
+    free_react ();
+    load_config ();
+    return WEECHAT_RC_OK;
+}
+
+int
+weechat_plugin_init (struct t_weechat_plugin *plugin,
+                     int argc _UNUSED_,
+                     char *argv[] _UNUSED_)
+{
+    weechat_plugin = plugin;
+    
+    load_config ();
+    
+    /* hook to message PRIVMSG */
+    weechat_hook_signal ("*,irc_in2_privmsg", &msg_in_cb, NULL);
+    
+    /* hook to message PRIVMSG going out */
+    weechat_hook_signal ("*,irc_out_privmsg", &msg_out_cb, NULL);
+    
+    /* hook to command reload so we reload our config as well */
+    weechat_hook_command_run ("/reload", &reload_cb, NULL);
+    
+    /* hook command tobuffer to send commands to a specific buffer */
+    weechat_hook_command ("tobuffer", "Send command to specified buffer",
+                          "BUFFER COMMAND",
+                          "BUFFER: buffer to send command to (plugin.buffer)\n"
+                          "COMMAND: command (w/ args) to send",
+                          "%(buffers_plugins_names)", &tobuffer_cb, NULL);
+    
+    /* regex to remove color codes & whatnot */
+    regex_strip_color = g_regex_new ("(\\x1f|\\x02|\\x03|\\x16|\\x0f)(?:\\d{1,2}(?:,\\d{1,2})?)?",
+                                     G_REGEX_CASELESS | G_REGEX_OPTIMIZE, 0, NULL);
+    
+    return WEECHAT_RC_OK;
+}
+
+int
+weechat_plugin_end (struct t_weechat_plugin *plugin _UNUSED_)
+{
+    free_react ();
+    if (regex_strip_color)
+    {
+        g_regex_unref (regex_strip_color);
+    }
+    return WEECHAT_RC_OK;
+}