+/**
+ * dofindpath - Given 2 keys displays a path between them.
+ * @have: The key we have.
+ * @want: The key we want to get to.
+ * @html: Should we output in html.
+ * @count: How many paths we should look for.
+ *
+ * This does a breadth first search on the key tree, starting with the
+ * key we have. It returns as soon as a path is found or when we run out
+ * of keys; whichever comes sooner.
+ */
+void dofindpath(uint64_t have, uint64_t want, bool html, int count)
+{
+ struct stats_key *keyinfoa, *keyinfob, *curkey;
+ uint64_t fullhave, fullwant;
+ int rec;
+ int pathnum;
+ char *uid;
+
+ fullhave = getfullkeyid(have);
+ fullwant = getfullkeyid(want);
+
+ /*
+ * Make sure the keys we have and want are in the cache.
+ */
+ (void) cached_getkeysigs(fullhave);
+ (void) cached_getkeysigs(fullwant);
+
+ if ((keyinfoa = findinhash(fullhave)) == NULL) {
+ printf("Couldn't find key 0x%llX.\n", have);
+ return;
+ }
+ if ((keyinfob = findinhash(fullwant)) == NULL) {
+ printf("Couldn't find key 0x%llX.\n", want);
+ return;
+ }
+
+ pathnum = 0;
+
+ while (pathnum < count) {
+ /*
+ * Fill the tree info up.
+ */
+ initcolour(true);
+ rec = findpath(keyinfoa, keyinfob);
+ keyinfob->parent = 0;
+
+ printf("%s%d nodes examined. %ld elements in the hash%s\n",
+ html ? "<HR>" : "",
+ rec,
+ hashelements(),
+ html ? "<BR>" : "");
+ if (keyinfoa->colour == 0) {
+ if (pathnum == 0) {
+ printf("Can't find a link from 0x%08llX to "
+ "0x%08llX%s\n",
+ have,
+ want,
+ html ? "<BR>" : "");
+ } else {
+ printf("Can't find any further paths%s\n",
+ html ? "<BR>" : "");
+ }
+ pathnum = count;
+ } else {
+ printf("%d steps from 0x%08llX to 0x%08llX%s\n",
+ keyinfoa->colour, have & 0xFFFFFFFF,
+ want & 0xFFFFFFFF,
+ html ? "<BR>" : "");
+ curkey = keyinfoa;
+ while (curkey != NULL && curkey->keyid != 0) {
+ uid = keyid2uid(curkey->keyid);
+ if (html && uid == NULL) {
+ printf("<a href=\"lookup?op=get&search="
+ "0x%08llX\">0x%08llX</a> (["
+ "User id not found])%s<BR>\n",
+ curkey->keyid & 0xFFFFFFFF,
+ curkey->keyid & 0xFFFFFFFF,
+ (curkey->keyid == fullwant) ?
+ "" : " signs");
+ } else if (html && uid != NULL) {
+ printf("<a href=\"lookup?op=get&search="
+ "0x%08llX\">0x%08llX</a>"
+ " (<a href=\"lookup?op=vindex&"
+ "search=0x%08llX\">%s</a>)%s"
+ "<BR>\n",
+ curkey->keyid & 0xFFFFFFFF,
+ curkey->keyid & 0xFFFFFFFF,
+ curkey->keyid & 0xFFFFFFFF,
+ txt2html(uid),
+ (curkey->keyid == fullwant) ?
+ "" : " signs");
+ } else {
+ printf("0x%08llX (%s)%s\n",
+ curkey->keyid & 0xFFFFFFFF,
+ (uid == NULL) ?
+ "[User id not found]" :
+ uid,
+ (curkey->keyid == fullwant) ?
+ "" : " signs");
+ }
+ if (uid != NULL) {
+ free(uid);
+ uid = NULL;
+ }
+ if (curkey != keyinfoa && curkey != keyinfob) {
+ curkey->disabled = true;
+ }
+ curkey = findinhash(curkey->parent);
+ }
+ if (html) {
+ puts("<P>List of key ids in path:</P>");
+ } else {
+ puts("List of key ids in path:");
+ }
+ curkey = keyinfoa;
+ while (curkey != NULL && curkey->keyid != 0) {
+ printf("0x%08llX ", curkey->keyid & 0xFFFFFFFF);
+ curkey = findinhash(curkey->parent);
+ }
+ putchar('\n');
+ }
+ pathnum++;
+ }
+}
+
+
+