cscvs to tla changeset 88

Author: noodles
Date: 2003/09/28 14:54:57
Add support for multiple DB3 key database files.

diff --git a/keydb_db3.c b/keydb_db3.c
index 1aba9199dea0442b6de2c39ebe4c5bb10cd9edfe..d3d35c85709a8d92ad489fb340f5654e8d3c2ab8 100644 (file)
--- a/keydb_db3.c
+++ b/keydb_db3.c
@@ -5,7 +5,7 @@
  *
  * Copyright 2002 Project Purple
  *
- * $Id: keydb_db3.c,v 1.16 2003/06/04 20:57:08 noodles Exp $
+ * $Id: keydb_db3.c,v 1.17 2003/09/28 14:54:57 noodles Exp $
  */
 
 #include <assert.h>
@@ -37,9 +37,14 @@
 static DB_ENV *dbenv = NULL;
 
 /**
- *     dbconn - our connection to the key database.
+ *     numdb - The number of database files we have.
  */
-static DB *dbconn = NULL;
+static int numdbs = 16;
+
+/**
+ *     dbconn - our connections to the key database files.
+ */
+static DB **dbconns = NULL;
 
 /**
  *     worddb - our connection to the word database.
@@ -51,6 +56,11 @@ static DB *worddb = NULL;
  */
 static DB_TXN *txn = NULL;
 
+DB *keydb(uint64_t keyid)
+{
+       return(dbconns[keyid % numdbs]);
+}
+
 /**
  *     makewordlist - Takes a string and splits it into a set of unique words.
  *     @wordlist: The current word list.
@@ -110,7 +120,29 @@ struct ll *makewordlist(struct ll *wordlist, char *word)
  */
 void initdb(void)
 {
-       int ret = 0;
+       char  buf[1024];
+       FILE *numdb = NULL;
+       int   ret = 0;
+       int   i = 0;
+
+       snprintf(buf, sizeof(buf) - 1, "%s/num_keydb", config.db_dir);
+       numdb = fopen(buf, "r");
+       if (numdb != NULL) {
+               if (fgets(buf, sizeof(buf), numdb) != NULL) {
+                       numdbs = atoi(buf);
+               }
+               fclose(numdb);
+       } else {
+               logthing(LOGTHING_ERROR, "Couldn't open num_keydb: %s",
+                               strerror(errno));
+       }
+
+       dbconns = malloc(sizeof (DB *) * numdbs);
+       if (dbconns == NULL) {
+               logthing(LOGTHING_CRITICAL,
+                               "Couldn't allocate memory for dbconns");
+               exit(1);
+       }
 
        ret = db_env_create(&dbenv, 0);
        if (ret != 0) {
@@ -144,24 +176,27 @@ void initdb(void)
                exit(1);
        }
 
-       ret = db_create(&dbconn, dbenv, 0);
-       if (ret != 0) {
-               logthing(LOGTHING_CRITICAL,
+       for (i = 0; i < numdbs; i++) {
+               ret = db_create(&dbconns[i], dbenv, 0);
+               if (ret != 0) {
+                       logthing(LOGTHING_CRITICAL,
                                "db_create: %s", db_strerror(ret));
-               exit(1);
-       }
+                       exit(1);
+               }
 
-       ret = dbconn->open(dbconn, "keydb.db", 
+               snprintf(buf, 1023, "keydb.%d.db", i);
+               ret = dbconns[i]->open(dbconns[i], buf,
                        NULL,
                        DB_HASH,
                        DB_CREATE,
                        0664);
-       if (ret != 0) {
-               logthing(LOGTHING_CRITICAL,
+               if (ret != 0) {
+                       logthing(LOGTHING_CRITICAL,
                                "Error opening key database: %s (%s)",
-                               "keydb.db",
+                               buf,
                                db_strerror(ret));
-               exit(1);
+                       exit(1);
+               }
        }
 
        ret = db_create(&worddb, dbenv, 0);
@@ -193,11 +228,15 @@ void initdb(void)
  */
 void cleanupdb(void)
 {
+       int i = 0;
+
        txn_checkpoint(dbenv, 0, 0, 0);
        worddb->close(worddb, 0);
        worddb = NULL;
-       dbconn->close(dbconn, 0);
-       dbconn = NULL;
+       for (i = 0; i < numdbs; i++) {
+               dbconns[i]->close(dbconns[i], 0);
+               dbconns[i] = NULL;
+       }
        dbenv->close(dbenv, 0);
        dbenv = NULL;
 }
@@ -290,7 +329,7 @@ int fetch_key(uint64_t keyid, struct openpgp_publickey **publickey,
                starttrans();
        }
 
-       ret = dbconn->get(dbconn,
+       ret = keydb(keyid)->get(keydb(keyid),
                        txn,
                        &key,
                        &data,
@@ -505,7 +544,7 @@ int store_key(struct openpgp_publickey *publickey, bool intrans, bool update)
                data.size = storebuf.offset;
                data.data = storebuf.buffer;
 
-               ret = dbconn->put(dbconn,
+               ret = keydb(keyid)->put(keydb(keyid),
                                txn,
                                &key,
                                &data,
@@ -714,7 +753,7 @@ int delete_key(uint64_t keyid, bool intrans)
                key.data = &keyid;
                key.size = sizeof(keyid);
 
-               dbconn->del(dbconn,
+               keydb(keyid)->del(keydb(keyid),
                                txn,
                                &key,
                                0); /* flags */
@@ -743,35 +782,38 @@ int dumpdb(char *filenamebase)
        DBC *cursor = NULL;
        int ret = 0;
        int fd = -1;
+       int i;
 
-       starttrans();
+       for (i = 0; i < numdbs; i++) {
+               starttrans();
        
-       ret = dbconn->cursor(dbconn,
-               txn,
-               &cursor,
-               0);   /* flags */
+               ret = dbconns[i]->cursor(dbconns[i],
+                       NULL,
+                       &cursor,
+                       0);   /* flags */
 
-       fd = open(filenamebase, O_CREAT | O_WRONLY | O_TRUNC, 0640);
-       memset(&key, 0, sizeof(key));
-       memset(&data, 0, sizeof(data));
-       ret = cursor->c_get(cursor, &key, &data, DB_NEXT);
-       while (ret == 0) {
-               write(fd, data.data, data.size);
+               fd = open(filenamebase, O_CREAT | O_WRONLY | O_TRUNC, 0640);
                memset(&key, 0, sizeof(key));
                memset(&data, 0, sizeof(data));
                ret = cursor->c_get(cursor, &key, &data, DB_NEXT);
-       }
-       if (ret != DB_NOTFOUND) {
-               logthing(LOGTHING_ERROR, "Problem reading key: %s",
-                               db_strerror(ret));
-       }
+               while (ret == 0) {
+                       write(fd, data.data, data.size);
+                       memset(&key, 0, sizeof(key));
+                       memset(&data, 0, sizeof(data));
+                       ret = cursor->c_get(cursor, &key, &data, DB_NEXT);
+               }
+               if (ret != DB_NOTFOUND) {
+                       logthing(LOGTHING_ERROR, "Problem reading key: %s",
+                                       db_strerror(ret));
+               }
 
-       close(fd);
+               close(fd);
 
-       ret = cursor->c_close(cursor);
-       cursor = NULL;
+               ret = cursor->c_close(cursor);
+               cursor = NULL;
        
-       endtrans();
+               endtrans();
+       }
        
        return 0;
 }