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/*
* Cookie Caching stuff. Adam wrote this, apparently just some
* derivatives of n's SNAC work. I cleaned it up, added comments.
*
*/
/*
* I'm assuming that cookies are type-specific. that is, we can have
* "1234578" for type 1 and type 2 concurrently. if i'm wrong, then we
* lose some error checking. if we assume cookies are not type-specific and are
* wrong, we get quirky behavior when cookies step on each others' toes.
*/
#include <aim.h>
#include "info.h"
/**
* aim_cachecookie - appends a cookie to the cookie list
* @sess: session to add to
* @cookie: pointer to struct to append
*
* if cookie->cookie for type cookie->type is found, updates the
* ->addtime of the found structure; otherwise adds the given cookie
* to the cache
*
* returns -1 on error, 0 on append, 1 on update. the cookie you pass
* in may be free'd, so don't count on its value after calling this!
*
*/
int aim_cachecookie(aim_session_t *sess, aim_msgcookie_t *cookie)
{
aim_msgcookie_t *newcook;
if (!sess || !cookie)
return -EINVAL;
newcook = aim_checkcookie(sess, cookie->cookie, cookie->type);
if (newcook == cookie) {
newcook->addtime = time(NULL);
return 1;
} else if (newcook)
aim_cookie_free(sess, newcook);
cookie->addtime = time(NULL);
cookie->next = sess->msgcookies;
sess->msgcookies = cookie;
return 0;
}
/**
* aim_uncachecookie - grabs a cookie from the cookie cache (removes it from the list)
* @sess: session to grab cookie from
* @cookie: cookie string to look for
* @type: cookie type to look for
*
* takes a cookie string and a cookie type and finds the cookie struct associated with that duple, removing it from the cookie list ikn the process.
*
* if found, returns the struct; if none found (or on error), returns NULL:
*/
aim_msgcookie_t *aim_uncachecookie(aim_session_t *sess, guint8 *cookie, int type)
{
aim_msgcookie_t *cur, **prev;
if (!cookie || !sess->msgcookies)
return NULL;
for (prev = &sess->msgcookies; (cur = *prev); ) {
if ((cur->type == type) &&
(memcmp(cur->cookie, cookie, 8) == 0)) {
*prev = cur->next;
return cur;
}
prev = &cur->next;
}
return NULL;
}
/**
* aim_mkcookie - generate an aim_msgcookie_t *struct from a cookie string, a type, and a data pointer.
* @c: pointer to the cookie string array
* @type: cookie type to use
* @data: data to be cached with the cookie
*
* returns NULL on error, a pointer to the newly-allocated cookie on
* success.
*
*/
aim_msgcookie_t *aim_mkcookie(guint8 *c, int type, void *data)
{
aim_msgcookie_t *cookie;
if (!c)
return NULL;
if (!(cookie = g_new0(aim_msgcookie_t,1)))
return NULL;
cookie->data = data;
cookie->type = type;
memcpy(cookie->cookie, c, 8);
return cookie;
}
/**
* aim_checkcookie - check to see if a cookietuple has been cached
* @sess: session to check for the cookie in
* @cookie: pointer to the cookie string array
* @type: type of the cookie to look for
*
* this returns a pointer to the cookie struct (still in the list) on
* success; returns NULL on error/not found
*
*/
aim_msgcookie_t *aim_checkcookie(aim_session_t *sess, const guint8 *cookie, int type)
{
aim_msgcookie_t *cur;
for (cur = sess->msgcookies; cur; cur = cur->next) {
if ((cur->type == type) &&
(memcmp(cur->cookie, cookie, 8) == 0))
return cur;
}
return NULL;
}
#if 0 /* debugging feature */
int aim_dumpcookie(aim_msgcookie_t *cookie)
{
if (!cookie)
return -EINVAL;
printf("\tCookie at %p: %d/%s with %p, next %p\n",
cookie, cookie->type, cookie->cookie,
cookie->data, cookie->next);
return 0;
}
#endif
/**
* aim_cookie_free - free an aim_msgcookie_t struct
* @sess: session to remove the cookie from
* @cookiep: the address of a pointer to the cookie struct to remove
*
* this function removes the cookie *cookie from teh list of cookies
* in sess, and then frees all memory associated with it. including
* its data! if you want to use the private data after calling this,
* make sure you copy it first.
*
* returns -1 on error, 0 on success.
*
*/
int aim_cookie_free(aim_session_t *sess, aim_msgcookie_t *cookie)
{
aim_msgcookie_t *cur, **prev;
if (!sess || !cookie)
return -EINVAL;
for (prev = &sess->msgcookies; (cur = *prev); ) {
if (cur == cookie)
*prev = cur->next;
else
prev = &cur->next;
}
g_free(cookie->data);
g_free(cookie);
return 0;
}
/* XXX I hate switch */
int aim_msgcookie_gettype(int reqclass)
{
/* XXX: hokey-assed. needs fixed. */
switch(reqclass) {
case AIM_CAPS_BUDDYICON: return AIM_COOKIETYPE_OFTICON;
case AIM_CAPS_VOICE: return AIM_COOKIETYPE_OFTVOICE;
case AIM_CAPS_IMIMAGE: return AIM_COOKIETYPE_OFTIMAGE;
case AIM_CAPS_CHAT: return AIM_COOKIETYPE_CHAT;
case AIM_CAPS_GETFILE: return AIM_COOKIETYPE_OFTGET;
case AIM_CAPS_SENDFILE: return AIM_COOKIETYPE_OFTSEND;
default: return AIM_COOKIETYPE_UNKNOWN;
}
}
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