diff -r b4ecc965ef9b -r b118fbab0556 libfaim/msgcookie.c
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/libfaim/msgcookie.c	Mon Mar 05 03:59:32 2001 +0000
@@ -0,0 +1,212 @@
+/*
+ * 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.
+ */
+
+#define FAIM_INTERNAL
+#include <aim.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!
+ * 
+ */
+faim_internal int aim_cachecookie(struct aim_session_t *sess,
+				  struct aim_msgcookie_t *cookie)
+{
+  struct aim_msgcookie_t *newcook;
+
+  if (!sess || !cookie)
+    return -1;
+
+  if( (newcook = aim_checkcookie(sess, cookie->cookie, cookie->type)) ) {
+    if(newcook != cookie) {
+      aim_cookie_free(sess, newcook);
+    } else {
+      newcook->addtime = time(NULL);
+      return 1;
+    }
+  }
+
+  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:
+ */
+faim_internal struct aim_msgcookie_t *aim_uncachecookie(struct aim_session_t *sess, unsigned char *cookie, int type)
+{
+  struct 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.
+ *
+ */
+faim_internal struct aim_msgcookie_t *aim_mkcookie(unsigned char *c, int type, void *data) 
+{
+  struct aim_msgcookie_t *cookie;
+
+  if (!c)
+    return NULL;
+
+  if (!(cookie = calloc(1, sizeof(struct aim_msgcookie_t))))
+    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
+ *
+ */
+
+faim_internal struct aim_msgcookie_t *aim_checkcookie(struct aim_session_t *sess, 
+						      const unsigned char *cookie, 
+						      const int type)
+{
+  struct 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 */
+faim_internal int aim_dumpcookie(struct aim_msgcookie_t *cookie) 
+{
+  if(!cookie)
+    return -1;
+  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.
+ *
+ */
+
+faim_internal int aim_cookie_free(struct aim_session_t *sess, 
+				  struct aim_msgcookie_t *cookie) 
+{
+  struct aim_msgcookie_t *cur, **prev;
+
+  if (!sess || !cookie)
+    return -1;
+
+  if(!cookie)
+    return 0;
+
+  for (prev = &sess->msgcookies; (cur = *prev); ) {
+    if (cur == cookie) {
+      *prev = cur->next;
+    } else
+      prev = &cur->next;
+  }
+
+  if(cookie->data)
+    free(cookie->data);
+
+  free(cookie);
+
+  return 0;
+} 
+
+faim_internal int aim_msgcookie_gettype(int reqclass) {
+  /* XXX: hokey-assed. needs fixed. */
+  switch(reqclass) {
+  case AIM_CAPS_BUDDYICON:
+    return AIM_COOKIETYPE_OFTICON;
+    break;
+  case AIM_CAPS_VOICE:
+    return AIM_COOKIETYPE_OFTVOICE;
+    break;
+  case AIM_CAPS_IMIMAGE:
+    return AIM_COOKIETYPE_OFTIMAGE;
+    break;
+  case AIM_CAPS_CHAT:
+    return AIM_COOKIETYPE_CHAT;
+    break;
+  case AIM_CAPS_GETFILE:
+    return AIM_COOKIETYPE_OFTGET;
+    break;
+  case AIM_CAPS_SENDFILE:
+    return AIM_COOKIETYPE_OFTSEND;
+    break;
+  default:
+    return AIM_COOKIETYPE_UNKNOWN;
+    break;
+  }           
+}