locate.c

oscar message protocol stack

/*
 * Family 0x0002 - Locate.
 *
 * The functions here are responsible for requesting and parsing information-
 * gathering SNACs.  Or something like that.  This family contains the SNACs 
 * for getting and setting info, away messages, directory profile thingy, etc.
 */

#define FAIM_INTERNAL
#include <aim.h>
#ifdef _WIN32
#include "win32dep.h"
#endif

/*
 * Capability blocks. 
 *
 * These are CLSIDs. They should actually be of the form:
 *
 * {0x0946134b, 0x4c7f, 0x11d1,
 *  {0x82, 0x22, 0x44, 0x45, 0x53, 0x54, 0x00, 0x00}}},
 *
 * But, eh.
 */
static const struct {
	fu32_t flag;
	fu8_t data[16];
} aim_caps[] = {

	/*
	 * These are in ascending numerical order.
	 */

	/*
	 * Perhaps better called AIM_CAPS_SHORTCAPS
	 */
	{AIM_CAPS_ICHAT,
	 {0x09, 0x46, 0x00, 0x00, 0x4c, 0x7f, 0x11, 0xd1, 
	  0x82, 0x22, 0x44, 0x45, 0x53, 0x54, 0x00, 0x00}},

	{AIM_CAPS_SECUREIM,
	 {0x09, 0x46, 0x00, 0x01, 0x4c, 0x7f, 0x11, 0xd1, 
	  0x82, 0x22, 0x44, 0x45, 0x53, 0x54, 0x00, 0x00}},

	{AIM_CAPS_VIDEO,
	 {0x09, 0x46, 0x01, 0x00, 0x4c, 0x7f, 0x11, 0xd1, 
	  0x82, 0x22, 0x44, 0x45, 0x53, 0x54, 0x00, 0x00}},

	/* "Live Video" support in Windows AIM 5.5.3501 and newer */
	{AIM_CAPS_LIVEVIDEO,
	 {0x09, 0x46, 0x01, 0x01, 0x4c, 0x7f, 0x11, 0xd1, 
	  0x82, 0x22, 0x44, 0x45, 0x53, 0x54, 0x00, 0x00}},

	/* "Camera" support in Windows AIM 5.5.3501 and newer */
	{AIM_CAPS_CAMERA,
	 {0x09, 0x46, 0x01, 0x02, 0x4c, 0x7f, 0x11, 0xd1, 
	  0x82, 0x22, 0x44, 0x45, 0x53, 0x54, 0x00, 0x00}},

	/* In Windows AIM 5.5.3501 and newer */
	{AIM_CAPS_GENERICUNKNOWN,
	 {0x09, 0x46, 0x01, 0x03, 0x4c, 0x7f, 0x11, 0xd1, 
	  0x82, 0x22, 0x44, 0x45, 0x53, 0x54, 0x00, 0x00}},

	/* In iChatAV (version numbers...?) */
	{AIM_CAPS_ICHATAV,
	 {0x09, 0x46, 0x01, 0x05, 0x4c, 0x7f, 0x11, 0xd1, 
	  0x82, 0x22, 0x44, 0x45, 0x45, 0x53, 0x54, 0x00}},

	/*
	 * Not really sure about this one.  In an email from 
	 * 26 Sep 2003, Matthew Sachs suggested that, "this 
	 * is probably the capability for the SMS features."
	 */
	{AIM_CAPS_SMS,
	 {0x09, 0x46, 0x01, 0xff, 0x4c, 0x7f, 0x11, 0xd1, 
	  0x82, 0x22, 0x44, 0x45, 0x53, 0x54, 0x00, 0x00}},

	{AIM_CAPS_GENERICUNKNOWN,
	 {0x09, 0x46, 0xf0, 0x03, 0x4c, 0x7f, 0x11, 0xd1, 
	  0x82, 0x22, 0x44, 0x45, 0x53, 0x54, 0x00, 0x00}},

	{AIM_CAPS_GENERICUNKNOWN,
	 {0x09, 0x46, 0xf0, 0x04, 0x4c, 0x7f, 0x11, 0xd1, 
	  0x82, 0x22, 0x44, 0x45, 0x53, 0x54, 0x00, 0x00}},

	{AIM_CAPS_GENERICUNKNOWN,
	 {0x09, 0x46, 0xf0, 0x05, 0x4c, 0x7f, 0x11, 0xd1, 
	  0x82, 0x22, 0x44, 0x45, 0x53, 0x54, 0x00, 0x00}},

	{AIM_CAPS_HIPTOP,
	 {0x09, 0x46, 0x13, 0x23, 0x4c, 0x7f, 0x11, 0xd1, 
	  0x82, 0x22, 0x44, 0x45, 0x53, 0x54, 0x00, 0x00}},

	{AIM_CAPS_TALK,
	 {0x09, 0x46, 0x13, 0x41, 0x4c, 0x7f, 0x11, 0xd1, 
	  0x82, 0x22, 0x44, 0x45, 0x53, 0x54, 0x00, 0x00}},

	{AIM_CAPS_SENDFILE,
	 {0x09, 0x46, 0x13, 0x43, 0x4c, 0x7f, 0x11, 0xd1, 
	  0x82, 0x22, 0x44, 0x45, 0x53, 0x54, 0x00, 0x00}},

	{AIM_CAPS_ICQ_DIRECT,
	 {0x09, 0x46, 0x13, 0x44, 0x4c, 0x7f, 0x11, 0xd1, 
	  0x82, 0x22, 0x44, 0x45, 0x53, 0x54, 0x00, 0x00}},

	{AIM_CAPS_DIRECTIM,
	 {0x09, 0x46, 0x13, 0x45, 0x4c, 0x7f, 0x11, 0xd1, 
	  0x82, 0x22, 0x44, 0x45, 0x53, 0x54, 0x00, 0x00}},

	{AIM_CAPS_BUDDYICON,
	 {0x09, 0x46, 0x13, 0x46, 0x4c, 0x7f, 0x11, 0xd1, 
	  0x82, 0x22, 0x44, 0x45, 0x53, 0x54, 0x00, 0x00}},

	{AIM_CAPS_ADDINS,
	 {0x09, 0x46, 0x13, 0x47, 0x4c, 0x7f, 0x11, 0xd1,
	  0x82, 0x22, 0x44, 0x45, 0x53, 0x54, 0x00, 0x00}},

	{AIM_CAPS_GETFILE,
	 {0x09, 0x46, 0x13, 0x48, 0x4c, 0x7f, 0x11, 0xd1,
	  0x82, 0x22, 0x44, 0x45, 0x53, 0x54, 0x00, 0x00}},

	{AIM_CAPS_ICQSERVERRELAY,
	 {0x09, 0x46, 0x13, 0x49, 0x4c, 0x7f, 0x11, 0xd1,
	  0x82, 0x22, 0x44, 0x45, 0x53, 0x54, 0x00, 0x00}},

	/*
	 * Indeed, there are two of these.  The former appears to be correct, 
	 * but in some versions of winaim, the second one is set.  Either they 
	 * forgot to fix endianness, or they made a typo. It really doesn't 
	 * matter which.
	 */
	{AIM_CAPS_GAMES,
	 {0x09, 0x46, 0x13, 0x4a, 0x4c, 0x7f, 0x11, 0xd1,
	  0x82, 0x22, 0x44, 0x45, 0x53, 0x54, 0x00, 0x00}},
	{AIM_CAPS_GAMES2,
	 {0x09, 0x46, 0x13, 0x4a, 0x4c, 0x7f, 0x11, 0xd1,
	  0x22, 0x82, 0x44, 0x45, 0x53, 0x54, 0x00, 0x00}},

	{AIM_CAPS_SENDBUDDYLIST,
	 {0x09, 0x46, 0x13, 0x4b, 0x4c, 0x7f, 0x11, 0xd1,
	  0x82, 0x22, 0x44, 0x45, 0x53, 0x54, 0x00, 0x00}},

	/*
	 * Setting this lets AIM users receive messages from ICQ users, and ICQ 
	 * users receive messages from AIM users.  It also lets ICQ users show 
	 * up in buddy lists for AIM users, and AIM users show up in buddy lists 
	 * for ICQ users.  And ICQ privacy/invisibility acts like AIM privacy, 
	 * in that if you add a user to your deny list, you will not be able to 
	 * see them as online (previous you could still see them, but they 
	 * couldn't see you.
	 */
	{AIM_CAPS_INTEROPERATE,
	 {0x09, 0x46, 0x13, 0x4d, 0x4c, 0x7f, 0x11, 0xd1,
	  0x82, 0x22, 0x44, 0x45, 0x53, 0x54, 0x00, 0x00}},

	{AIM_CAPS_ICQUTF8,
	 {0x09, 0x46, 0x13, 0x4e, 0x4c, 0x7f, 0x11, 0xd1,
	  0x82, 0x22, 0x44, 0x45, 0x53, 0x54, 0x00, 0x00}},

	{AIM_CAPS_ICQUTF8OLD,
	 {0x2e, 0x7a, 0x64, 0x75, 0xfa, 0xdf, 0x4d, 0xc8,
	  0x88, 0x6f, 0xea, 0x35, 0x95, 0xfd, 0xb6, 0xdf}},

	/*
	 * Chat is oddball.
	 */
	{AIM_CAPS_CHAT,
	 {0x74, 0x8f, 0x24, 0x20, 0x62, 0x87, 0x11, 0xd1, 
	  0x82, 0x22, 0x44, 0x45, 0x53, 0x54, 0x00, 0x00}},

	/*
	{AIM_CAPS_ICQ2GO,
	 {0x56, 0x3f, 0xc8, 0x09, 0x0b, 0x6f, 0x41, 0xbd,
	  0x9f, 0x79, 0x42, 0x26, 0x09, 0xdf, 0xa2, 0xf3}},
	*/

	{AIM_CAPS_ICQRTF,
	 {0x97, 0xb1, 0x27, 0x51, 0x24, 0x3c, 0x43, 0x34,
	  0xad, 0x22, 0xd6, 0xab, 0xf7, 0x3f, 0x14, 0x92}},

	/* This is added by the servers and it only shows up for ourselves... */
	{AIM_CAPS_GENERICUNKNOWN,
	 {0x97, 0xb1, 0x27, 0x51, 0x24, 0x3c, 0x43, 0x34, 
	  0xad, 0x22, 0xd6, 0xab, 0xf7, 0x3f, 0x14, 0x09}},

	{AIM_CAPS_APINFO, 
	 {0xaa, 0x4a, 0x32, 0xb5, 0xf8, 0x84, 0x48, 0xc6,
	  0xa3, 0xd7, 0x8c, 0x50, 0x97, 0x19, 0xfd, 0x5b}},

	{AIM_CAPS_TRILLIANCRYPT,
	 {0xf2, 0xe7, 0xc7, 0xf4, 0xfe, 0xad, 0x4d, 0xfb,
	  0xb2, 0x35, 0x36, 0x79, 0x8b, 0xdf, 0x00, 0x00}},

	{AIM_CAPS_EMPTY,
	 {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
	  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}},

	{AIM_CAPS_LAST}
};

/*
 * Add the userinfo to our linked list.  If we already have userinfo 
 * for this buddy, then just overwrite parts of the old data.
 * @param userinfo Contains the new information for the buddy.
 */
static void aim_locate_adduserinfo(aim_session_t *sess, aim_userinfo_t *userinfo) {
	aim_userinfo_t *cur;

	cur = aim_locate_finduserinfo(sess, userinfo->sn);

	if (cur == NULL) {
		cur = (aim_userinfo_t *)calloc(1, sizeof(aim_userinfo_t));
		cur->sn = strdup(userinfo->sn);
		cur->next = sess->locate.userinfo;
		sess->locate.userinfo = cur;
	}

	cur->warnlevel = userinfo->warnlevel;
	cur->idletime = userinfo->idletime;
	if (userinfo->flags != 0)
		cur->flags = userinfo->flags;
	if (userinfo->createtime != 0)
		cur->createtime = userinfo->createtime;
	if (userinfo->membersince != 0)
		cur->membersince = userinfo->membersince;
	if (userinfo->onlinesince != 0)
		cur->onlinesince = userinfo->onlinesince;
	if (userinfo->sessionlen != 0)
		cur->sessionlen = userinfo->sessionlen;
	if (userinfo->capabilities != 0)
		cur->capabilities = userinfo->capabilities;
	cur->present |= userinfo->present;

	if (userinfo->iconcsumlen > 0) {
		free(cur->iconcsum);
		cur->iconcsum = (fu8_t *)malloc(userinfo->iconcsumlen);
		memcpy(cur->iconcsum, userinfo->iconcsum, userinfo->iconcsumlen);
		cur->iconcsumlen = userinfo->iconcsumlen;
	}

	if (userinfo->info != NULL) {
		free(cur->info);
		free(cur->info_encoding);
		if (userinfo->info_len > 0) {
			cur->info = (char *)malloc(userinfo->info_len);
			memcpy(cur->info, userinfo->info, userinfo->info_len);
		} else
			cur->info = NULL;
		cur->info_encoding = strdup(userinfo->info_encoding);
		cur->info_len = userinfo->info_len;
	}

	if (userinfo->away != NULL) {
		free(cur->away);
		free(cur->away_encoding);
		if (userinfo->away_len > 0) {
			cur->away = (char *)malloc(userinfo->away_len);
			memcpy(cur->away, userinfo->away, userinfo->away_len);
		} else
			cur->away = NULL;
		cur->away_encoding = strdup(userinfo->away_encoding);
		cur->away_len = userinfo->away_len;
	}
}

faim_export void aim_locate_dorequest(aim_session_t *sess) {
	struct userinfo_node *cur = sess->locate.torequest;

	if (cur == NULL)
		return;

	if (sess->locate.waiting_for_response == TRUE)
		return;

	sess->locate.waiting_for_response = TRUE;
	aim_locate_getinfoshort(sess, cur->sn, 0x00000003);

	/* Move this node to the "requested" queue */
	sess->locate.torequest = cur->next;
	cur->next = sess->locate.requested;
	sess->locate.requested = cur;
}

/**
 * Remove this screen name from our queue.  If this info was requested 
 * by our info request queue, then pop the next element off of the queue.
 *
 * @param sess The aim session.
 * @param sn Screen name of the info we just received.
 * @return True if the request was explicit (client requested the info), 
 *         false if the request was implicit (libfaim request the info).
 */
static int aim_locate_gotuserinfo(aim_session_t *sess, const char *sn) {
	struct userinfo_node *cur, *del;
	int was_explicit = TRUE;

	while ((sess->locate.requested != NULL) && (aim_sncmp(sn, sess->locate.requested->sn) == 0)) {
		del = sess->locate.requested;
		sess->locate.requested = del->next;
		was_explicit = FALSE;
		free(del->sn);
		free(del);
	}

	cur = sess->locate.requested;
	while ((cur != NULL) && (cur->next != NULL)) {
		if (aim_sncmp(sn, cur->next->sn) == 0) {
			del = cur->next;
			cur->next = del->next;
			was_explicit = FALSE;
			free(del->sn);
			free(del);
		} else
			cur = cur->next;
	}

	if (!was_explicit) {
		aim_conn_t *conn = aim_conn_findbygroup(sess, AIM_CB_FAM_LOC);
		aim_rxcallback_t userfunc;

		sess->locate.waiting_for_response = FALSE;

		if ((userfunc = aim_callhandler(sess, conn, AIM_CB_FAM_LOC, AIM_CB_LOC_REQUESTINFOTIMEOUT)))
			userfunc(sess, NULL);
		else
			aim_locate_dorequest(sess);
	}

	return was_explicit;
}

faim_internal void aim_locate_requestuserinfo(aim_session_t *sess, const char *sn) {
	struct userinfo_node *cur;

	/* Make sure we aren't already requesting info for this buddy */
	cur = sess->locate.torequest;
	while (cur != NULL) {
		if (aim_sncmp(sn, cur->sn) == 0)
			return;
		cur = cur->next;
	}

	/* Add a new node to our request queue */
	cur = (struct userinfo_node *)malloc(sizeof(struct userinfo_node));
	cur->sn = strdup(sn);
	cur->next = sess->locate.torequest;
	sess->locate.torequest = cur;

	/* Actually request some info up in this piece */
	aim_locate_dorequest(sess);
}

faim_export aim_userinfo_t *aim_locate_finduserinfo(aim_session_t *sess, const char *sn) {
	aim_userinfo_t *cur = NULL;

	if ( sn == NULL )
		return NULL;
	
	cur = sess->locate.userinfo;


	while (cur != NULL) {
		if (aim_sncmp(cur->sn, sn) == 0)
			return cur;
		cur = cur->next;
	}

	return NULL;
}

faim_internal fu32_t aim_locate_getcaps(aim_session_t *sess, aim_bstream_t *bs, int len)
{
	fu32_t flags = 0;
	int offset;

	for (offset = 0; aim_bstream_empty(bs) && (offset < len); offset += 0x10) {
		fu8_t *cap;
		int i, identified;

		cap = aimbs_getraw(bs, 0x10);

		for (i = 0, identified = 0; !(aim_caps[i].flag & AIM_CAPS_LAST); i++) {
			if (memcmp(&aim_caps[i].data, cap, 0x10) == 0) {
				flags |= aim_caps[i].flag;
				identified++;
				break; /* should only match once... */
			}
		}

		if (!identified)
			faimdprintf(sess, 0, "unknown capability: {%02x%02x%02x%02x-%02x%02x-%02x%02x-%02x%02x-%02x%02x%02x%02x%02x%02x}\n",
					cap[0], cap[1], cap[2], cap[3],
					cap[4], cap[5],
					cap[6], cap[7],
					cap[8], cap[9],
					cap[10], cap[11], cap[12], cap[13],
					cap[14], cap[15]);

		free(cap);
	}

	return flags;
}

faim_internal fu32_t aim_locate_getcaps_short(aim_session_t *sess, aim_bstream_t *bs, int len)
{
	fu32_t flags = 0;
	int offset;

	for (offset = 0; aim_bstream_empty(bs) && (offset < len); offset += 0x02) {
		fu8_t *cap;
		int i, identified;

		cap = aimbs_getraw(bs, 0x02);

		for (i = 0, identified = 0; !(aim_caps[i].flag & AIM_CAPS_LAST); i++) {
			if (memcmp(&aim_caps[i].data[2], cap, 0x02) == 0) {
				flags |= aim_caps[i].flag;
				identified++;
				break; /* should only match once... */
			}
		}

		if (!identified)
			faimdprintf(sess, 0, "unknown short capability: {%02x%02x}\n", cap[0], cap[1]);

		free(cap);
	}

	return flags;
}

faim_internal int aim_putcap(aim_bstream_t *bs, fu32_t caps)
{
	int i;

	if (!bs)
		return -EINVAL;

	for (i = 0; aim_bstream_empty(bs); i++) {

		if (aim_caps[i].flag == AIM_CAPS_LAST)
			break;

		if (caps & aim_caps[i].flag)
			aimbs_putraw(bs, aim_caps[i].data, 0x10);

	}

	return 0;
}