source: skype/skype.c @ d1d5b34

/*
 *  skype.c - Skype plugin for BitlBee
 *
 *  Copyright (c) 2007, 2008, 2009 by Miklos Vajna <vmiklos@frugalware.org>
 *
 *  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 2 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, write to the Free Software
 *  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
 *  USA.
 */

#define _XOPEN_SOURCE
#define _BSD_SOURCE
#include <poll.h>
#include <bitlbee.h>
#include <bitlbee/ssl_client.h>

#define SKYPE_DEFAULT_SERVER "localhost"
#define SKYPE_DEFAULT_PORT "2727"
#define IRC_LINE_SIZE 1024
#define ARRAY_SIZE(x) (sizeof(x)/sizeof(x[0]))

/*
 * Enumerations
 */

enum {
        SKYPE_CALL_RINGING = 1,
        SKYPE_CALL_MISSED,
        SKYPE_CALL_CANCELLED,
        SKYPE_CALL_FINISHED,
        SKYPE_CALL_REFUSED
};

enum {
        SKYPE_FILETRANSFER_NEW = 1,
        SKYPE_FILETRANSFER_FAILED
};

/*
 * Structures
 */

struct skype_data {
        struct im_connection *ic;
        char *username;
        /* The effective file descriptor. We store it here so any function can
         * write() to it. */
        int fd;
        /* File descriptor returned by bitlbee. we store it so we know when
         * we're connected and when we aren't. */
        int bfd;
        /* ssl_getfd() uses this to get the file desciptor. */
        void *ssl;
        /* When we receive a new message id, we query the properties, finally
         * the chatname. Store the properties here so that we can use
         * imcb_buddy_msg() when we got the chatname. */
        char *handle;
        /* List, because of multiline messages. */
        GList *body;
        char *type;
        /* This is necessary because we send a notification when we get the
         * handle. So we store the state here and then we can send a
         * notification about the handle is in a given status. */
        int call_status;
        char *call_id;
        char *call_duration;
        /* If the call is outgoing or not */
        int call_out;
        /* Same for file transfers. */
        int filetransfer_status;
        /* Using /j #nick we want to have a groupchat with two people. Usually
         * not (default). */
        char *groupchat_with;
        /* The user who invited us to the chat. */
        char *adder;
        /* If we are waiting for a confirmation about we changed the topic. */
        int topic_wait;
        /* These are used by the info command. */
        char *info_fullname;
        char *info_phonehome;
        char *info_phoneoffice;
        char *info_phonemobile;
        char *info_nrbuddies;
        char *info_tz;
        char *info_seen;
        char *info_birthday;
        char *info_sex;
        char *info_language;
        char *info_country;
        char *info_province;
        char *info_city;
        char *info_homepage;
        char *info_about;
        /* When a call fails, we get the reason and later we get the failure
         * event, so store the failure code here till then */
        int failurereason;
};

struct skype_away_state {
        char *code;
        char *full_name;
};

struct skype_buddy_ask_data {
        struct im_connection *ic;
        /* This is also used for call IDs for simplicity */
        char *handle;
};

/*
 * Tables
 */

const struct skype_away_state skype_away_state_list[] = {
        { "ONLINE", "Online" },
        { "SKYPEME", "Skype Me" },
        { "AWAY", "Away" },
        { "NA", "Not available" },
        { "DND", "Do Not Disturb" },
        { "INVISIBLE", "Invisible" },
        { "OFFLINE", "Offline" },
        { NULL, NULL}
};

/*
 * Functions
 */

int skype_write(struct im_connection *ic, char *buf, int len)
{
        struct skype_data *sd = ic->proto_data;
        struct pollfd pfd[1];

        pfd[0].fd = sd->fd;
        pfd[0].events = POLLOUT;

        /* This poll is necessary or we'll get a SIGPIPE when we write() to
         * sd->fd. */
        poll(pfd, 1, 1000);
        if (pfd[0].revents & POLLHUP) {
                imc_logout(ic, TRUE);
                return FALSE;
        }
        ssl_write(sd->ssl, buf, len);

        return TRUE;
}

int skype_printf(struct im_connection *ic, char *fmt, ...)
{
        va_list args;
        char str[IRC_LINE_SIZE];
        
        va_start(args, fmt);
        vsnprintf(str, IRC_LINE_SIZE, fmt, args);
        va_end(args);

        return skype_write(ic, str, strlen(str));
}

static void skype_buddy_ask_yes(void *data)
{
        struct skype_buddy_ask_data *bla = data;
        skype_printf(bla->ic, "SET USER %s ISAUTHORIZED TRUE",
                bla->handle);
        g_free(bla->handle);
        g_free(bla);
}

static void skype_buddy_ask_no(void *data)
{
        struct skype_buddy_ask_data *bla = data;
        skype_printf(bla->ic, "SET USER %s ISAUTHORIZED FALSE",
                bla->handle);
        g_free(bla->handle);
        g_free(bla);
}

void skype_buddy_ask(struct im_connection *ic, char *handle, char *message)
{
        struct skype_buddy_ask_data *bla = g_new0(struct skype_buddy_ask_data,
                1);
        char *buf;

        bla->ic = ic;
        bla->handle = g_strdup(handle);

        buf = g_strdup_printf("The user %s wants to add you to "
                "his/her buddy list, saying: '%s'.", handle, message);
        imcb_ask(ic, buf, bla, skype_buddy_ask_yes, skype_buddy_ask_no);
        g_free(buf);
}

static void skype_call_ask_yes(void *data)
{
        struct skype_buddy_ask_data *bla = data;
        skype_printf(bla->ic, "SET CALL %s STATUS INPROGRESS",
                bla->handle);
        g_free(bla->handle);
        g_free(bla);
}

static void skype_call_ask_no(void *data)
{
        struct skype_buddy_ask_data *bla = data;
        skype_printf(bla->ic, "SET CALL %s STATUS FINISHED",
                bla->handle);
        g_free(bla->handle);
        g_free(bla);
}

void skype_call_ask(struct im_connection *ic, char *call_id, char *message)
{
        struct skype_buddy_ask_data *bla = g_new0(struct skype_buddy_ask_data,
                1);

        bla->ic = ic;
        bla->handle = g_strdup(call_id);

        imcb_ask(ic, message, bla, skype_call_ask_yes, skype_call_ask_no);
}
struct groupchat *skype_chat_by_name(struct im_connection *ic, char *name)
{
        struct groupchat *ret;

        for (ret = ic->groupchats; ret; ret = ret->next)
                if (strcmp(name, ret->title) == 0)
                        break;

        return ret;
}

static char *skype_call_strerror(int err)
{
        switch (err) {
        case 1:
                return "Miscellaneous error";
        case 2:
                return "User or phone number does not exist.";
        case 3:
                return "User is offline";
        case 4:
                return "No proxy found";
        case 5:
                return "Session terminated.";
        case 6:
                return "No common codec found.";
        case 7:
                return "Sound I/O error.";
        case 8:
                return "Problem with remote sound device.";
        case 9:
                return "Call blocked by recipient.";
        case 10:
                return "Recipient not a friend.";
        case 11:
                return "Current user not authorized by recipient.";
        case 12:
                return "Sound recording error.";
        default:
                return "Unknown error";
        }
}

static void skype_parse_users(struct im_connection *ic, char *line)
{
        char **i, **nicks;

        nicks = g_strsplit(line + 6, ", ", 0);
        for (i = nicks; *i; i++)
                skype_printf(ic, "GET USER %s ONLINESTATUS\n", *i);
        g_strfreev(nicks);
}

static void skype_parse_user(struct im_connection *ic, char *line)
{
        int flags = 0;
        char *ptr;
        struct skype_data *sd = ic->proto_data;
        char *user = strchr(line, ' ');
        char *status = strrchr(line, ' ');

        status++;
        ptr = strchr(++user, ' ');
        if (!ptr)
                return;
        *ptr = '\0';
        ptr++;
        if (!strncmp(ptr, "ONLINESTATUS ", 13) &&
                        strcmp(user, sd->username) != 0
                        && strcmp(user, "echo123") != 0) {
                ptr = g_strdup_printf("%s@skype.com", user);
                imcb_add_buddy(ic, ptr, NULL);
                if (strcmp(status, "OFFLINE") && (strcmp(status, "SKYPEOUT") ||
                        !set_getbool(&ic->acc->set, "skypeout_offline")))
                        flags |= OPT_LOGGED_IN;
                if (strcmp(status, "ONLINE") && strcmp(status, "SKYPEME"))
                        flags |= OPT_AWAY;
                imcb_buddy_status(ic, ptr, flags, NULL, NULL);
                g_free(ptr);
        } else if (!strncmp(ptr, "RECEIVEDAUTHREQUEST ", 20)) {
                char *message = ptr + 20;
                if (strlen(message))
                        skype_buddy_ask(ic, user, message);
        } else if (!strncmp(ptr, "BUDDYSTATUS ", 12)) {
                char *st = ptr + 12;
                if (!strcmp(st, "3")) {
                        char *buf = g_strdup_printf("%s@skype.com", user);
                        imcb_add_buddy(ic, buf, NULL);
                        g_free(buf);
                }
        } else if (!strncmp(ptr, "FULLNAME ", 9))
                sd->info_fullname = g_strdup(ptr + 9);
        else if (!strncmp(ptr, "PHONE_HOME ", 11))
                sd->info_phonehome = g_strdup(ptr + 11);
        else if (!strncmp(ptr, "PHONE_OFFICE ", 13))
                sd->info_phoneoffice = g_strdup(ptr + 13);
        else if (!strncmp(ptr, "PHONE_MOBILE ", 13))
                sd->info_phonemobile = g_strdup(ptr + 13);
        else if (!strncmp(ptr, "NROF_AUTHED_BUDDIES ", 20))
                sd->info_nrbuddies = g_strdup(ptr + 20);
        else if (!strncmp(ptr, "TIMEZONE ", 9))
                sd->info_tz = g_strdup(ptr + 9);
        else if (!strncmp(ptr, "LASTONLINETIMESTAMP ", 20))
                sd->info_seen = g_strdup(ptr + 20);
        else if (!strncmp(ptr, "BIRTHDAY ", 9))
                sd->info_birthday = g_strdup(ptr + 9);
        else if (!strncmp(ptr, "SEX ", 4))
                sd->info_sex = g_strdup(ptr + 4);
        else if (!strncmp(ptr, "LANGUAGE ", 9))
                sd->info_language = g_strdup(ptr + 9);
        else if (!strncmp(ptr, "COUNTRY ", 8))
                sd->info_country = g_strdup(ptr + 8);
        else if (!strncmp(ptr, "PROVINCE ", 9))
                sd->info_province = g_strdup(ptr + 9);
        else if (!strncmp(ptr, "CITY ", 5))
                sd->info_city = g_strdup(ptr + 5);
        else if (!strncmp(ptr, "HOMEPAGE ", 9))
                sd->info_homepage = g_strdup(ptr + 9);
        else if (!strncmp(ptr, "ABOUT ", 6)) {
                sd->info_about = g_strdup(ptr + 6);

                GString *st = g_string_new("Contact Information\n");
                g_string_append_printf(st, "Skype Name: %s\n", user);
                if (sd->info_fullname) {
                        if (strlen(sd->info_fullname))
                                g_string_append_printf(st, "Full Name: %s\n",
                                        sd->info_fullname);
                        g_free(sd->info_fullname);
                }
                if (sd->info_phonehome) {
                        if (strlen(sd->info_phonehome))
                                g_string_append_printf(st, "Home Phone: %s\n",
                                        sd->info_phonehome);
                        g_free(sd->info_phonehome);
                }
                if (sd->info_phoneoffice) {
                        if (strlen(sd->info_phoneoffice))
                                g_string_append_printf(st, "Office Phone: %s\n",
                                        sd->info_phoneoffice);
                        g_free(sd->info_phoneoffice);
                }
                if (sd->info_phonemobile) {
                        if (strlen(sd->info_phonemobile))
                                g_string_append_printf(st, "Mobile Phone: %s\n",
                                        sd->info_phonemobile);
                        g_free(sd->info_phonemobile);
                }
                g_string_append_printf(st, "Personal Information\n");
                if (sd->info_nrbuddies) {
                        if (strlen(sd->info_nrbuddies))
                                g_string_append_printf(st,
                                        "Contacts: %s\n", sd->info_nrbuddies);
                        g_free(sd->info_nrbuddies);
                }
                if (sd->info_tz) {
                        if (strlen(sd->info_tz)) {
                                char ib[256];
                                time_t t = time(NULL);
                                t += atoi(sd->info_tz)-(60*60*24);
                                struct tm *gt = gmtime(&t);
                                strftime(ib, 256, "%H:%M:%S", gt);
                                g_string_append_printf(st,
                                        "Local Time: %s\n", ib);
                        }
                        g_free(sd->info_tz);
                }
                if (sd->info_seen) {
                        if (strlen(sd->info_seen)) {
                                char ib[256];
                                time_t it = atoi(sd->info_seen);
                                struct tm *tm = localtime(&it);
                                strftime(ib, 256, ("%Y. %m. %d. %H:%M"), tm);
                                g_string_append_printf(st,
                                        "Last Seen: %s\n", ib);
                        }
                        g_free(sd->info_seen);
                }
                if (sd->info_birthday) {
                        if (strlen(sd->info_birthday) &&
                                strcmp(sd->info_birthday, "0")) {
                                char ib[256];
                                struct tm tm;
                                strptime(sd->info_birthday, "%Y%m%d", &tm);
                                strftime(ib, 256, "%B %d, %Y", &tm);
                                g_string_append_printf(st,
                                        "Birthday: %s\n", ib);

                                strftime(ib, 256, "%Y", &tm);
                                int year = atoi(ib);
                                time_t t = time(NULL);
                                struct tm *lt = localtime(&t);
                                g_string_append_printf(st,
                                        "Age: %d\n", lt->tm_year+1900-year);
                        }
                        g_free(sd->info_birthday);
                }
                if (sd->info_sex) {
                        if (strlen(sd->info_sex)) {
                                char *iptr = sd->info_sex;
                                while (*iptr++)
                                        *iptr = tolower(*iptr);
                                g_string_append_printf(st,
                                        "Gender: %s\n", sd->info_sex);
                        }
                        g_free(sd->info_sex);
                }
                if (sd->info_language) {
                        if (strlen(sd->info_language)) {
                                char *iptr = strchr(sd->info_language, ' ');
                                if (iptr)
                                        iptr++;
                                else
                                        iptr = sd->info_language;
                                g_string_append_printf(st,
                                        "Language: %s\n", iptr);
                        }
                        g_free(sd->info_language);
                }
                if (sd->info_country) {
                        if (strlen(sd->info_country)) {
                                char *iptr = strchr(sd->info_country, ' ');
                                if (iptr)
                                        iptr++;
                                else
                                        iptr = sd->info_country;
                                g_string_append_printf(st,
                                        "Country: %s\n", iptr);
                        }
                        g_free(sd->info_country);
                }
                if (sd->info_province) {
                        if (strlen(sd->info_province))
                                g_string_append_printf(st,
                                        "Region: %s\n", sd->info_province);
                        g_free(sd->info_province);
                }
                if (sd->info_city) {
                        if (strlen(sd->info_city))
                                g_string_append_printf(st,
                                        "City: %s\n", sd->info_city);
                        g_free(sd->info_city);
                }
                if (sd->info_homepage) {
                        if (strlen(sd->info_homepage))
                                g_string_append_printf(st,
                                        "Homepage: %s\n", sd->info_homepage);
                        g_free(sd->info_homepage);
                }
                if (sd->info_about) {
                        if (strlen(sd->info_about))
                                g_string_append_printf(st, "%s\n",
                                        sd->info_about);
                        g_free(sd->info_about);
                }
                imcb_log(ic, "%s", st->str);
                g_string_free(st, TRUE);
        }
}

static void skype_parse_chatmessage(struct im_connection *ic, char *line)
{
        struct skype_data *sd = ic->proto_data;
        char buf[IRC_LINE_SIZE];
        char *id = strchr(line, ' ');

        if (!++id)
                return;
        char *info = strchr(id, ' ');

        if (!info)
                return;
        *info = '\0';
        info++;
        if (!strcmp(info, "STATUS RECEIVED") || !strncmp(info, "EDITED_TIMESTAMP", 16)) {
                /* New message ID:
                 * (1) Request its from field
                 * (2) Request its body
                 * (3) Request its type
                 * (4) Query chatname
                 */
                skype_printf(ic, "GET CHATMESSAGE %s FROM_HANDLE\n", id);
                if (!strcmp(info, "STATUS RECEIVED"))
                        skype_printf(ic, "GET CHATMESSAGE %s BODY\n", id);
                skype_printf(ic, "GET CHATMESSAGE %s TYPE\n", id);
                skype_printf(ic, "GET CHATMESSAGE %s CHATNAME\n", id);
        } else if (!strncmp(info, "FROM_HANDLE ", 12)) {
                info += 12;
                /* New from field value. Store
                 * it, then we can later use it
                 * when we got the message's
                 * body. */
                g_free(sd->handle);
                sd->handle = g_strdup_printf("%s@skype.com", info);
        } else if (!strncmp(info, "EDITED_BY ", 10)) {
                info += 10;
                /* This is the same as
                 * FROM_HANDLE, except that we
                 * never request these lines
                 * from Skype, we just get
                 * them. */
                g_free(sd->handle);
                sd->handle = g_strdup_printf("%s@skype.com", info);
        } else if (!strncmp(info, "BODY ", 5)) {
                info += 5;
                sd->body = g_list_append(sd->body, g_strdup(info));
        }       else if (!strncmp(info, "TYPE ", 5)) {
                info += 5;
                g_free(sd->type);
                sd->type = g_strdup(info);
        } else if (!strncmp(info, "CHATNAME ", 9)) {
                info += 9;
                if (sd->handle && sd->body && sd->type) {
                        struct groupchat *gc = skype_chat_by_name(ic, info);
                        int i;
                        for (i = 0; i < g_list_length(sd->body); i++) {
                                char *body = g_list_nth_data(sd->body, i);
                                if (!strcmp(sd->type, "SAID") ||
                                        !strcmp(sd->type, "EMOTED")) {
                                        if (!strcmp(sd->type, "SAID"))
                                                g_snprintf(buf, IRC_LINE_SIZE, "%s",
                                                        body);
                                        else
                                                g_snprintf(buf, IRC_LINE_SIZE, "/me %s",
                                                        body);
                                        if (!gc)
                                                /* Private message */
                                                imcb_buddy_msg(ic,
                                                        sd->handle, buf, 0, 0);
                                        else
                                                /* Groupchat message */
                                                imcb_chat_msg(gc,
                                                        sd->handle, buf, 0, 0);
                                } else if (!strcmp(sd->type, "SETTOPIC") && gc)
                                        imcb_chat_topic(gc,
                                                sd->handle, body, 0);
                                else if (!strcmp(sd->type, "LEFT") && gc)
                                        imcb_chat_remove_buddy(gc,
                                                sd->handle, NULL);
                        }
                        g_list_free(sd->body);
                        sd->body = NULL;
                }
        }
}

static void skype_parse_call(struct im_connection *ic, char *line)
{
        struct skype_data *sd = ic->proto_data;
        char *id = strchr(line, ' ');
        char buf[IRC_LINE_SIZE];

        if (!++id)
                return;
        char *info = strchr(id, ' ');

        if (!info)
                return;
        *info = '\0';
        info++;
        if (!strncmp(info, "FAILUREREASON ", 14))
                sd->failurereason = atoi(strchr(info, ' '));
        else if (!strcmp(info, "STATUS RINGING")) {
                if (sd->call_id)
                        g_free(sd->call_id);
                sd->call_id = g_strdup(id);
                skype_printf(ic, "GET CALL %s PARTNER_HANDLE\n", id);
                sd->call_status = SKYPE_CALL_RINGING;
        } else if (!strcmp(info, "STATUS MISSED")) {
                skype_printf(ic, "GET CALL %s PARTNER_HANDLE\n", id);
                sd->call_status = SKYPE_CALL_MISSED;
        } else if (!strcmp(info, "STATUS CANCELLED")) {
                skype_printf(ic, "GET CALL %s PARTNER_HANDLE\n", id);
                sd->call_status = SKYPE_CALL_CANCELLED;
        } else if (!strcmp(info, "STATUS FINISHED")) {
                skype_printf(ic, "GET CALL %s PARTNER_HANDLE\n", id);
                sd->call_status = SKYPE_CALL_FINISHED;
        } else if (!strcmp(info, "STATUS REFUSED")) {
                skype_printf(ic, "GET CALL %s PARTNER_HANDLE\n", id);
                sd->call_status = SKYPE_CALL_REFUSED;
        } else if (!strcmp(info, "STATUS UNPLACED")) {
                if (sd->call_id)
                        g_free(sd->call_id);
                /* Save the ID for later usage (Cancel/Finish). */
                sd->call_id = g_strdup(id);
                sd->call_out = TRUE;
        } else if (!strcmp(info, "STATUS FAILED")) {
                imcb_error(ic, "Call failed: %s",
                        skype_call_strerror(sd->failurereason));
                sd->call_id = NULL;
        } else if (!strncmp(info, "DURATION ", 9)) {
                if (sd->call_duration)
                        g_free(sd->call_duration);
                sd->call_duration = g_strdup(info+9);
        } else if (!strncmp(info, "PARTNER_HANDLE ", 15)) {
                info += 15;
                if (!sd->call_status)
                        return;
                switch (sd->call_status) {
                case SKYPE_CALL_RINGING:
                        if (sd->call_out)
                                imcb_log(ic, "You are currently ringing "
                                        "the user %s.", info);
                        else {
                                g_snprintf(buf, IRC_LINE_SIZE,
                                        "The user %s is currently ringing you.",
                                        info);
                                skype_call_ask(ic, sd->call_id, buf);
                        }
                        break;
                case SKYPE_CALL_MISSED:
                        imcb_log(ic, "You have missed a call from user %s.",
                                info);
                        break;
                case SKYPE_CALL_CANCELLED:
                        imcb_log(ic, "You cancelled the call to the user %s.",
                                info);
                        sd->call_status = 0;
                        sd->call_out = FALSE;
                        break;
                case SKYPE_CALL_REFUSED:
                        if (sd->call_out)
                                imcb_log(ic, "The user %s refused the call.",
                                        info);
                        else
                                imcb_log(ic,
                                        "You refused the call from user %s.",
                                        info);
                        sd->call_out = FALSE;
                        break;
                case SKYPE_CALL_FINISHED:
                        if (sd->call_duration)
                                imcb_log(ic,
                                        "You finished the call to the user %s "
                                        "(duration: %s seconds).",
                                        info, sd->call_duration);
                        else
                                imcb_log(ic,
                                        "You finished the call to the user %s.",
                                        info);
                        sd->call_out = FALSE;
                        break;
                default:
                        /* Don't be noisy, ignore other statuses for now. */
                        break;
                }
                sd->call_status = 0;
        }
}

static void skype_parse_filetransfer(struct im_connection *ic, char *line)
{
        struct skype_data *sd = ic->proto_data;
        char *id = strchr(line, ' ');

        if (!++id)
                return;
        char *info = strchr(id, ' ');

        if (!info)
                return;
        *info = '\0';
        info++;
        if (!strcmp(info, "STATUS NEW")) {
                skype_printf(ic, "GET FILETRANSFER %s PARTNER_HANDLE\n",
                        id);
                sd->filetransfer_status = SKYPE_FILETRANSFER_NEW;
        } else if (!strcmp(info, "STATUS FAILED")) {
                skype_printf(ic, "GET FILETRANSFER %s PARTNER_HANDLE\n",
                        id);
                sd->filetransfer_status = SKYPE_FILETRANSFER_FAILED;
        } else if (!strncmp(info, "PARTNER_HANDLE ", 15)) {
                info += 15;
                if (!sd->filetransfer_status)
                        return;
                switch (sd->filetransfer_status) {
                case SKYPE_FILETRANSFER_NEW:
                        imcb_log(ic, "The user %s offered a new file for you.",
                                info);
                        break;
                case SKYPE_FILETRANSFER_FAILED:
                        imcb_log(ic, "Failed to transfer file from user %s.",
                                info);
                        break;
                }
                sd->filetransfer_status = 0;
        }
}

static void skype_parse_chat(struct im_connection *ic, char *line)
{
        struct skype_data *sd = ic->proto_data;
        char buf[IRC_LINE_SIZE];
        char *id = strchr(line, ' ');

        if (!++id)
                return;
        struct groupchat *gc;
        char *info = strchr(id, ' ');

        if (!info)
                return;
        *info = '\0';
        info++;
        /* Remove fake chat if we created one in skype_chat_with() */
        gc = skype_chat_by_name(ic, "");
        if (gc)
                imcb_chat_free(gc);
        if (!strcmp(info, "STATUS MULTI_SUBSCRIBED")) {
                imcb_chat_new(ic, id);
                skype_printf(ic, "GET CHAT %s ADDER\n", id);
                skype_printf(ic, "GET CHAT %s TOPIC\n", id);
        } else if (!strcmp(info, "STATUS DIALOG") && sd->groupchat_with) {
                gc = imcb_chat_new(ic, id);
                /* According to the docs this
                 * is necessary. However it
                 * does not seem the situation
                 * and it would open an extra
                 * window on our client, so
                 * just leave it out. */
                /*skype_printf(ic, "OPEN CHAT %s\n", id);*/
                g_snprintf(buf, IRC_LINE_SIZE, "%s@skype.com", sd->groupchat_with);
                imcb_chat_add_buddy(gc, buf);
                imcb_chat_add_buddy(gc, sd->username);
                g_free(sd->groupchat_with);
                sd->groupchat_with = NULL;
                skype_printf(ic, "GET CHAT %s ADDER\n", id);
                skype_printf(ic, "GET CHAT %s TOPIC\n", id);
        } else if (!strcmp(info, "STATUS UNSUBSCRIBED")) {
                gc = skype_chat_by_name(ic, id);
                if (gc)
                        gc->data = (void *)FALSE;
        } else if (!strncmp(info, "ADDER ", 6)) {
                info += 6;
                g_free(sd->adder);
                sd->adder = g_strdup_printf("%s@skype.com", info);
        } else if (!strncmp(info, "TOPIC ", 6)) {
                info += 6;
                gc = skype_chat_by_name(ic, id);
                if (gc && (sd->adder || sd->topic_wait)) {
                        if (sd->topic_wait) {
                                sd->adder = g_strdup(sd->username);
                                sd->topic_wait = 0;
                        }
                        imcb_chat_topic(gc, sd->adder, info, 0);
                        g_free(sd->adder);
                        sd->adder = NULL;
                }
        } else if (!strncmp(info, "ACTIVEMEMBERS ", 14)) {
                info += 14;
                gc = skype_chat_by_name(ic, id);
                /* Hack! We set ->data to TRUE
                 * while we're on the channel
                 * so that we won't rejoin
                 * after a /part. */
                if (!gc || gc->data)
                        return;
                char **members = g_strsplit(info, " ", 0);
                int i;
                for (i = 0; members[i]; i++) {
                        if (!strcmp(members[i], sd->username))
                                continue;
                        g_snprintf(buf, IRC_LINE_SIZE, "%s@skype.com", members[i]);
                        if (!g_list_find_custom(gc->in_room, buf,
                                (GCompareFunc)strcmp))
                                imcb_chat_add_buddy(gc, buf);
                }
                imcb_chat_add_buddy(gc, sd->username);
                g_strfreev(members);
        }
}

static void skype_parse_password(struct im_connection *ic, char *line)
{
        if (!strncmp(line+9, "OK", 2))
                imcb_connected(ic);
        else {
                imcb_error(ic, "Authentication Failed");
                imc_logout(ic, TRUE);
        }
}

static void skype_parse_profile(struct im_connection *ic, char *line)
{
        imcb_log(ic, "SkypeOut balance value is '%s'.", line+21);
}

static void skype_parse_ping(struct im_connection *ic, char *line)
{
        skype_printf(ic, "PONG\n");
}

static void skype_parse_chats(struct im_connection *ic, char *line)
{
        char **i;
        char **chats = g_strsplit(line + 6, ", ", 0);

        i = chats;
        while (*i) {
                skype_printf(ic, "GET CHAT %s STATUS\n", *i);
                skype_printf(ic, "GET CHAT %s ACTIVEMEMBERS\n", *i);
                i++;
        }
        g_strfreev(chats);
}

typedef void (*skype_parser)(struct im_connection *ic, char *line);

static gboolean skype_read_callback(gpointer data, gint fd,
                                    b_input_condition cond)
{
        struct im_connection *ic = data;
        struct skype_data *sd = ic->proto_data;
        char buf[IRC_LINE_SIZE];
        int st, i;
        char **lines, **lineptr, *line;
        static struct parse_map {
                char *k;
                skype_parser v;
        } parsers[] = {
                { "USERS ", skype_parse_users },
                { "USER ", skype_parse_user },
                { "CHATMESSAGE ", skype_parse_chatmessage },
                { "CALL ", skype_parse_call },
                { "FILETRANSFER ", skype_parse_filetransfer },
                { "CHAT ", skype_parse_chat },
                { "PASSWORD ", skype_parse_password },
                { "PROFILE PSTN_BALANCE ", skype_parse_profile },
                { "PING", skype_parse_ping },
                { "CHATS ", skype_parse_chats },
        };

        if (!sd || sd->fd == -1)
                return FALSE;
        /* Read the whole data. */
        st = ssl_read(sd->ssl, buf, sizeof(buf));
        if (st > 0) {
                buf[st] = '\0';
                /* Then split it up to lines. */
                lines = g_strsplit(buf, "\n", 0);
                lineptr = lines;
                while ((line = *lineptr)) {
                        if (!strlen(line))
                                break;
                        if (set_getbool(&ic->acc->set, "skypeconsole_receive"))
                                imcb_buddy_msg(ic, "skypeconsole", line, 0, 0);
                        for (i = 0; i < ARRAY_SIZE(parsers); i++)
                                if (!strncmp(line, parsers[i].k,
                                        strlen(parsers[i].k))) {
                                        parsers[i].v(ic, line);
                                        break;
                                }
                        lineptr++;
                }
                g_strfreev(lines);
        } else if (st == 0 || (st < 0 && !sockerr_again())) {
                closesocket(sd->fd);
                sd->fd = -1;

                imcb_error(ic, "Error while reading from server");
                imc_logout(ic, TRUE);
                return FALSE;
        }
        return TRUE;
}

gboolean skype_start_stream(struct im_connection *ic)
{
        struct skype_data *sd = ic->proto_data;
        int st;

        if (!sd)
                return FALSE;

        if (sd->bfd <= 0)
                sd->bfd = b_input_add(sd->fd, GAIM_INPUT_READ,
                        skype_read_callback, ic);

        /* Log in */
        skype_printf(ic, "USERNAME %s\n", ic->acc->user);
        skype_printf(ic, "PASSWORD %s\n", ic->acc->pass);

        /* This will download all buddies. */
        st = skype_printf(ic, "SEARCH FRIENDS\n");
        skype_printf(ic, "SET USERSTATUS ONLINE\n");

        /* Auto join to bookmarked chats if requested.*/
        if (set_getbool(&ic->acc->set, "auto_join"))
                skype_printf(ic, "SEARCH BOOKMARKEDCHATS\n");
        return st;
}

gboolean skype_connected(gpointer data, void *source, b_input_condition cond)
{
        struct im_connection *ic = data;
        struct skype_data *sd = ic->proto_data;
        if (!source) {
                sd->ssl = NULL;
                imcb_error(ic, "Could not connect to server");
                imc_logout(ic, TRUE);
                return FALSE;
        }
        imcb_log(ic, "Connected to server, logging in");
        return skype_start_stream(ic);
}

static void skype_login(account_t *acc)
{
        struct im_connection *ic = imcb_new(acc);
        struct skype_data *sd = g_new0(struct skype_data, 1);

        ic->proto_data = sd;

        imcb_log(ic, "Connecting");
        sd->ssl = ssl_connect(set_getstr(&acc->set, "server"),
                set_getint(&acc->set, "port"), skype_connected, ic);
        sd->fd = sd->ssl ? ssl_getfd(sd->ssl) : -1;
        sd->username = g_strdup(acc->user);

        sd->ic = ic;

        if (set_getbool(&acc->set, "skypeconsole"))
                imcb_add_buddy(ic, "skypeconsole", NULL);
}

static void skype_logout(struct im_connection *ic)
{
        struct skype_data *sd = ic->proto_data;

        skype_printf(ic, "SET USERSTATUS OFFLINE\n");

        g_free(sd->username);
        g_free(sd->handle);
        g_free(sd);
        ic->proto_data = NULL;
}

static int skype_buddy_msg(struct im_connection *ic, char *who, char *message,
                           int flags)
{
        char *ptr, *nick;
        int st;

        nick = g_strdup(who);
        ptr = strchr(nick, '@');
        if (ptr)
                *ptr = '\0';

        if (!strncmp(who, "skypeconsole", 12))
                st = skype_printf(ic, "%s\n", message);
        else
                st = skype_printf(ic, "MESSAGE %s %s\n", nick, message);
        g_free(nick);

        return st;
}

const struct skype_away_state *skype_away_state_by_name(char *name)
{
        int i;

        for (i = 0; skype_away_state_list[i].full_name; i++)
                if (g_strcasecmp(skype_away_state_list[i].full_name, name) == 0)
                        return skype_away_state_list + i;

        return NULL;
}

static void skype_set_away(struct im_connection *ic, char *state_txt,
                           char *message)
{
        const struct skype_away_state *state;

        if (strcmp(state_txt, GAIM_AWAY_CUSTOM) == 0)
                state = skype_away_state_by_name("Away");
        else
                state = skype_away_state_by_name(state_txt);
        skype_printf(ic, "SET USERSTATUS %s\n", state->code);
}

static GList *skype_away_states(struct im_connection *ic)
{
        static GList *l;
        int i;

        if (l == NULL)
                for (i = 0; skype_away_state_list[i].full_name; i++)
                        l = g_list_append(l,
                                (void *)skype_away_state_list[i].full_name);

        return l;
}

static char *skype_set_display_name(set_t *set, char *value)
{
        account_t *acc = set->data;
        struct im_connection *ic = acc->ic;

        skype_printf(ic, "SET PROFILE FULLNAME %s", value);
        return value;
}

static char *skype_set_balance(set_t *set, char *value)
{
        account_t *acc = set->data;
        struct im_connection *ic = acc->ic;

        skype_printf(ic, "GET PROFILE PSTN_BALANCE");
        return value;
}

static char *skype_set_call(set_t *set, char *value)
{
        account_t *acc = set->data;
        struct im_connection *ic = acc->ic;
        struct skype_data *sd = ic->proto_data;
        char *nick, *ptr;

        if (value) {
                user_t *u = user_find(acc->irc, value);
                /* We are starting a call */
                if (!u)
                        nick = g_strdup(value);
                else
                        nick = g_strdup(u->handle);
                ptr = strchr(nick, '@');
                if (ptr)
                        *ptr = '\0';

                skype_printf(ic, "CALL %s", nick);
                g_free(nick);
        } else {
                /* We are ending a call */
                if (sd->call_id) {
                        skype_printf(ic, "SET CALL %s STATUS FINISHED",
                                sd->call_id);
                        g_free(sd->call_id);
                        sd->call_id = NULL;
                } else
                        imcb_error(ic, "There are no active calls currently.");
        }
        return value;
}

static void skype_add_buddy(struct im_connection *ic, char *who, char *group)
{
        char *nick, *ptr;

        nick = g_strdup(who);
        ptr = strchr(nick, '@');
        if (ptr)
                *ptr = '\0';
        skype_printf(ic, "SET USER %s BUDDYSTATUS 2 Please authorize me\n",
                nick);
        g_free(nick);
}

static void skype_remove_buddy(struct im_connection *ic, char *who, char *group)
{
        char *nick, *ptr;

        nick = g_strdup(who);
        ptr = strchr(nick, '@');
        if (ptr)
                *ptr = '\0';
        skype_printf(ic, "SET USER %s BUDDYSTATUS 1\n", nick);
        g_free(nick);
}

void skype_chat_msg(struct groupchat *gc, char *message, int flags)
{
        struct im_connection *ic = gc->ic;
        skype_printf(ic, "CHATMESSAGE %s %s\n", gc->title, message);
}

void skype_chat_leave(struct groupchat *gc)
{
        struct im_connection *ic = gc->ic;
        skype_printf(ic, "ALTER CHAT %s LEAVE\n", gc->title);
        gc->data = (void *)TRUE;
}

void skype_chat_invite(struct groupchat *gc, char *who, char *message)
{
        struct im_connection *ic = gc->ic;
        char *ptr, *nick;
        nick = g_strdup(message);
        ptr = strchr(nick, '@');
        if (ptr)
                *ptr = '\0';
        skype_printf(ic, "ALTER CHAT %s ADDMEMBERS %s\n", gc->title, nick);
        g_free(nick);
}

void skype_chat_topic(struct groupchat *gc, char *message)
{
        struct im_connection *ic = gc->ic;
        struct skype_data *sd = ic->proto_data;
        skype_printf(ic, "ALTER CHAT %s SETTOPIC %s\n",
                gc->title, message);
        sd->topic_wait = 1;
}

struct groupchat *skype_chat_with(struct im_connection *ic, char *who)
{
        struct skype_data *sd = ic->proto_data;
        char *ptr, *nick;
        nick = g_strdup(who);
        ptr = strchr(nick, '@');
        if (ptr)
                *ptr = '\0';
        skype_printf(ic, "CHAT CREATE %s\n", nick);
        sd->groupchat_with = g_strdup(nick);
        g_free(nick);
        /* We create a fake chat for now. We will replace it with a real one in
         * the real callback. */
        return imcb_chat_new(ic, "");
}

static void skype_get_info(struct im_connection *ic, char *who)
{
        char *ptr, *nick;
        nick = g_strdup(who);
        ptr = strchr(nick, '@');
        if (ptr)
                *ptr = '\0';
        skype_printf(ic, "GET USER %s FULLNAME\n", nick);
        skype_printf(ic, "GET USER %s PHONE_HOME\n", nick);
        skype_printf(ic, "GET USER %s PHONE_OFFICE\n", nick);
        skype_printf(ic, "GET USER %s PHONE_MOBILE\n", nick);
        skype_printf(ic, "GET USER %s NROF_AUTHED_BUDDIES\n", nick);
        skype_printf(ic, "GET USER %s TIMEZONE\n", nick);
        skype_printf(ic, "GET USER %s LASTONLINETIMESTAMP\n", nick);
        skype_printf(ic, "GET USER %s BIRTHDAY\n", nick);
        skype_printf(ic, "GET USER %s SEX\n", nick);
        skype_printf(ic, "GET USER %s LANGUAGE\n", nick);
        skype_printf(ic, "GET USER %s COUNTRY\n", nick);
        skype_printf(ic, "GET USER %s PROVINCE\n", nick);
        skype_printf(ic, "GET USER %s CITY\n", nick);
        skype_printf(ic, "GET USER %s HOMEPAGE\n", nick);
        skype_printf(ic, "GET USER %s ABOUT\n", nick);
}

static void skype_set_my_name(struct im_connection *ic, char *info)
{
        skype_set_display_name(set_find(&ic->acc->set, "display_name"), info);
}

static void skype_init(account_t *acc)
{
        set_t *s;

        s = set_add(&acc->set, "server", SKYPE_DEFAULT_SERVER, set_eval_account,
                acc);
        s->flags |= ACC_SET_OFFLINE_ONLY;

        s = set_add(&acc->set, "port", SKYPE_DEFAULT_PORT, set_eval_int, acc);
        s->flags |= ACC_SET_OFFLINE_ONLY;

        s = set_add(&acc->set, "display_name", NULL, skype_set_display_name,
                acc);
        s->flags |= ACC_SET_NOSAVE | ACC_SET_ONLINE_ONLY;

        s = set_add(&acc->set, "call", NULL, skype_set_call, acc);
        s->flags |= ACC_SET_NOSAVE | ACC_SET_ONLINE_ONLY;

        s = set_add(&acc->set, "balance", NULL, skype_set_balance, acc);
        s->flags |= ACC_SET_NOSAVE | ACC_SET_ONLINE_ONLY;

        s = set_add(&acc->set, "skypeout_offline", "true", set_eval_bool, acc);

        s = set_add(&acc->set, "skypeconsole", "false", set_eval_bool, acc);
        s->flags |= ACC_SET_OFFLINE_ONLY;

        s = set_add(&acc->set, "skypeconsole_receive", "false", set_eval_bool,
                acc);
        s->flags |= ACC_SET_OFFLINE_ONLY;

        s = set_add(&acc->set, "auto_join", "false", set_eval_bool, acc);
        s->flags |= ACC_SET_OFFLINE_ONLY;
}

void init_plugin(void)
{
        struct prpl *ret = g_new0(struct prpl, 1);

        ret->name = "skype";
        ret->login = skype_login;
        ret->init = skype_init;
        ret->logout = skype_logout;
        ret->buddy_msg = skype_buddy_msg;
        ret->get_info = skype_get_info;
        ret->set_my_name = skype_set_my_name;
        ret->away_states = skype_away_states;
        ret->set_away = skype_set_away;
        ret->add_buddy = skype_add_buddy;
        ret->remove_buddy = skype_remove_buddy;
        ret->chat_msg = skype_chat_msg;
        ret->chat_leave = skype_chat_leave;
        ret->chat_invite = skype_chat_invite;
        ret->chat_with = skype_chat_with;
        ret->handle_cmp = g_strcasecmp;
        ret->chat_topic = skype_chat_topic;
        register_protocol(ret);
}