X-Git-Url: https://git.sommitrealweird.co.uk/onak.git/blobdiff_plain/87fbdd69b1885c6588ec924e37b734f2c3c5ed35..e3ac2630467e42937478a8e03dec83693912f9c4:/keydb_db3.c

diff --git a/keydb_db3.c b/keydb_db3.c
index 4d1bcca..b3441b7 100644
--- a/keydb_db3.c
+++ b/keydb_db3.c
@@ -4,6 +4,8 @@
  * Jonathan McDowell <noodles@earth.li>
  *
  * Copyright 2002 Project Purple
+ *
+ * $Id: keydb_db3.c,v 1.22 2003/10/10 16:57:27 noodles Exp $
  */
 
 #include <assert.h>
@@ -25,6 +27,7 @@
 #include "decodekey.h"
 #include "keystructs.h"
 #include "mem.h"
+#include "log.h"
 #include "onak-conf.h"
 #include "parsekey.h"
 
@@ -34,9 +37,14 @@
 static DB_ENV *dbenv = NULL;
 
 /**
- *	dbconn - our connection to the key database.
+ *	numdb - The number of database files we have.
+ */
+static int numdbs = 16;
+
+/**
+ *	dbconn - our connections to the key database files.
  */
-static DB *dbconn = NULL;
+static DB **dbconns = NULL;
 
 /**
  *	worddb - our connection to the word database.
@@ -48,6 +56,15 @@ static DB *worddb = NULL;
  */
 static DB_TXN *txn = NULL;
 
+DB *keydb(uint64_t keyid)
+{
+	uint64_t keytrun;
+
+	keytrun = keyid >> 8;
+
+	return(dbconns[keytrun % numdbs]);
+}
+
 /**
  *	makewordlist - Takes a string and splits it into a set of unique words.
  *	@wordlist: The current word list.
@@ -107,25 +124,57 @@ struct ll *makewordlist(struct ll *wordlist, char *word)
  */
 void initdb(void)
 {
-	char buf[1024];
-	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));
+		numdb = fopen(buf, "w");
+		if (numdb != NULL) {
+			fprintf(numdb, "%d", numdbs);
+			fclose(numdb);
+		} else {
+			logthing(LOGTHING_ERROR,
+				"Couldn't write 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) {
-		fprintf(stderr, "db_env_create: %s\n", db_strerror(ret));
+		logthing(LOGTHING_CRITICAL,
+			"db_env_create: %s", db_strerror(ret));
 		exit(1);
 	}
 
 	/*
-	 * This is a bit of a kludge. Either we run a separate process for
-	 * deadlock detection or we do this every time we run. What we really
-	 * want to do is specify that our locks are exclusive locks when we
-	 * start to do an update.
+	 * Enable deadlock detection so that we don't block indefinitely on
+	 * anything. What we really want is simple 2 state locks, but I'm not
+	 * sure how to make the standard DB functions do that yet.
 	 */
-	ret = lock_detect(dbenv,
-			0, /* flags */
-			DB_LOCK_RANDOM,
-			NULL); /* If non null int* for number broken */
+	ret = dbenv->set_lk_detect(dbenv, DB_LOCK_DEFAULT);
+	if (ret != 0) {
+		logthing(LOGTHING_CRITICAL,
+			"db_env_create: %s", db_strerror(ret));
+		exit(1);
+	}
 
 	ret = dbenv->open(dbenv, config.db_dir,
 			DB_INIT_LOG | DB_INIT_MPOOL | DB_INIT_LOCK |
@@ -133,29 +182,39 @@ void initdb(void)
 			DB_CREATE,
 			0);
 	if (ret != 0) {
-		dbenv->err(dbenv, ret, "%s", config.db_dir);
+		logthing(LOGTHING_CRITICAL,
+				"Error opening db environment: %s (%s)",
+				config.db_dir,
+				db_strerror(ret));
 		exit(1);
 	}
 
-	ret = db_create(&dbconn, dbenv, 0);
-	if (ret != 0) {
-		fprintf(stderr, "db_create: %s\n", db_strerror(ret));
-		exit(1);
-	}
+	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);
+		}
 
-	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) {
-		dbconn->err(dbconn, ret, "keydb.db");
-		exit(1);
+		if (ret != 0) {
+			logthing(LOGTHING_CRITICAL,
+				"Error opening key database: %s (%s)",
+				buf,
+				db_strerror(ret));
+			exit(1);
+		}
 	}
 
 	ret = db_create(&worddb, dbenv, 0);
 	if (ret != 0) {
-		fprintf(stderr, "db_create: %s\n", db_strerror(ret));
+		logthing(LOGTHING_CRITICAL, "db_create: %s", db_strerror(ret));
 		exit(1);
 	}
 	ret = worddb->set_flags(worddb, DB_DUP);
@@ -164,7 +223,10 @@ void initdb(void)
 			DB_CREATE,
 			0664);
 	if (ret != 0) {
-		worddb->err(worddb, ret, "worddb");
+		logthing(LOGTHING_CRITICAL,
+				"Error opening word database: %s (%s)",
+				"worddb",
+				db_strerror(ret));
 		exit(1);
 	}
 	
@@ -179,10 +241,15 @@ 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;
 }
@@ -198,6 +265,7 @@ bool starttrans(void)
 {
 	int ret;
 
+	assert(dbenv != NULL);
 	assert(txn == NULL);
 
 	ret = txn_begin(dbenv,
@@ -205,7 +273,9 @@ bool starttrans(void)
 		&txn,
 		0);
 	if (ret != 0) {
-		dbenv->err(dbenv, ret, "starttrans():");
+		logthing(LOGTHING_CRITICAL,
+				"Error starting transaction: %s",
+				db_strerror(ret));
 		exit(1);
 	}
 
@@ -221,12 +291,15 @@ void endtrans(void)
 {
 	int ret;
 
+	assert(dbenv != NULL);
 	assert(txn != NULL);
 
 	ret = txn_commit(txn,
 		0);
 	if (ret != 0) {
-		dbenv->err(dbenv, ret, "endtrans():");
+		logthing(LOGTHING_CRITICAL,
+				"Error ending transaction: %s",
+				db_strerror(ret));
 		exit(1);
 	}
 	txn = NULL;
@@ -269,7 +342,7 @@ int fetch_key(uint64_t keyid, struct openpgp_publickey **publickey,
 		starttrans();
 	}
 
-	ret = dbconn->get(dbconn,
+	ret = keydb(keyid)->get(keydb(keyid),
 			txn,
 			&key,
 			&data,
@@ -280,13 +353,15 @@ int fetch_key(uint64_t keyid, struct openpgp_publickey **publickey,
 		fetchbuf.offset = 0;
 		fetchbuf.size = data.size;
 		read_openpgp_stream(buffer_fetchchar, &fetchbuf,
-				&packets);
+				&packets, 0);
 		parse_keys(packets, publickey);
 		free_packet_list(packets);
 		packets = NULL;
 		numkeys++;
 	} else if (ret != DB_NOTFOUND) {
-		dbconn->err(dbconn, ret, "Problem retrieving key");
+		logthing(LOGTHING_ERROR,
+				"Problem retrieving key: %s",
+				db_strerror(ret));
 	}
 
 	if (!intrans) {
@@ -482,13 +557,15 @@ 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,
 				0); /* flags*/
 		if (ret != 0) {
-			dbconn->err(dbconn, ret, "Problem storing key");
+			logthing(LOGTHING_ERROR,
+					"Problem storing key: %s",
+					db_strerror(ret));
 			if (ret == DB_LOCK_DEADLOCK) {
 				deadlock = true;
 			}
@@ -545,8 +622,9 @@ int store_key(struct openpgp_publickey *publickey, bool intrans, bool update)
 				&data,
 				0);
 			if (ret != 0) {
-				worddb->err(worddb, ret,
-					"Problem storing key");
+				logthing(LOGTHING_ERROR,
+					"Problem storing word: %s",
+					db_strerror(ret));
 				if (ret == DB_LOCK_DEADLOCK) {
 					deadlock = true;
 				}
@@ -652,14 +730,16 @@ int delete_key(uint64_t keyid, bool intrans)
 			if (ret == 0) {
 				ret = cursor->c_del(cursor, 0);
 				if (ret != 0) {
-					worddb->err(worddb, ret,
-						"Problem deleting word.");
+					logthing(LOGTHING_ERROR,
+						"Problem deleting word: %s",
+						db_strerror(ret));
 				}
 			}
 
 			if (ret != 0) {
-				worddb->err(worddb, ret,
-					"Problem deleting word.");
+				logthing(LOGTHING_ERROR,
+					"Problem deleting word: %s",
+					db_strerror(ret));
 				if (ret == DB_LOCK_DEADLOCK) {
 					deadlock = true;
 				}
@@ -686,7 +766,7 @@ 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 */
@@ -699,6 +779,65 @@ int delete_key(uint64_t keyid, bool intrans)
 	return deadlock ? (-1) : (ret == DB_NOTFOUND);
 }
 
+/**
+ *	dumpdb - dump the key database
+ *	@filenamebase: The base filename to use for the dump.
+ *
+ *	Dumps the database into one or more files, which contain pure OpenPGP
+ *	that can be reimported into onak or gpg. filenamebase provides a base
+ *	file name for the dump; several files may be created, all of which will
+ *	begin with this string and then have a unique number and a .pgp
+ *	extension.
+ */
+int dumpdb(char *filenamebase)
+{
+	DBT   key, data;
+	DBC  *cursor = NULL;
+	int   ret = 0;
+	int   fd = -1;
+	int   i = 0;
+	char  filename[1024];
+
+	filename[1023] = 0;
+	for (i = 0; i < numdbs; i++) {
+		ret = dbconns[i]->cursor(dbconns[i],
+			NULL,
+			&cursor,
+			0);   /* flags */
+
+		snprintf(filename, 1023, "%s.%d.pgp", filenamebase, i);
+		fd = open(filename, O_CREAT | O_WRONLY | O_TRUNC, 0640);
+		if (fd == -1) {
+			logthing(LOGTHING_ERROR,
+				"Error opening keydump file (%s): %s",
+				filename,
+				strerror(errno));
+		} else {
+			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);
+				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);
+		}
+
+		ret = cursor->c_close(cursor);
+		cursor = NULL;
+	}
+	
+	return 0;
+}
+
 /*
  * Include the basic keydb routines.
  */