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-rw-r--r--libraries/liblmdb/mdb_dump.c319
1 files changed, 319 insertions, 0 deletions
diff --git a/libraries/liblmdb/mdb_dump.c b/libraries/liblmdb/mdb_dump.c
new file mode 100644
index 0000000..ee7dbe8
--- /dev/null
+++ b/libraries/liblmdb/mdb_dump.c
@@ -0,0 +1,319 @@
+/* mdb_dump.c - memory-mapped database dump tool */
+/*
+ * Copyright 2011-2020 Howard Chu, Symas Corp.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted only as authorized by the OpenLDAP
+ * Public License.
+ *
+ * A copy of this license is available in the file LICENSE in the
+ * top-level directory of the distribution or, alternatively, at
+ * <http://www.OpenLDAP.org/license.html>.
+ */
+#include <stdio.h>
+#include <errno.h>
+#include <stdlib.h>
+#include <string.h>
+#include <ctype.h>
+#include <unistd.h>
+#include <signal.h>
+#include "lmdb.h"
+
+#ifdef _WIN32
+#define Z "I"
+#else
+#define Z "z"
+#endif
+
+#define PRINT 1
+static int mode;
+
+typedef struct flagbit {
+ int bit;
+ char *name;
+} flagbit;
+
+flagbit dbflags[] = {
+ { MDB_REVERSEKEY, "reversekey" },
+ { MDB_DUPSORT, "dupsort" },
+ { MDB_INTEGERKEY, "integerkey" },
+ { MDB_DUPFIXED, "dupfixed" },
+ { MDB_INTEGERDUP, "integerdup" },
+ { MDB_REVERSEDUP, "reversedup" },
+ { 0, NULL }
+};
+
+static volatile sig_atomic_t gotsig;
+
+static void dumpsig( int sig )
+{
+ gotsig=1;
+}
+
+static const char hexc[] = "0123456789abcdef";
+
+static void hex(unsigned char c)
+{
+ putchar(hexc[c >> 4]);
+ putchar(hexc[c & 0xf]);
+}
+
+static void text(MDB_val *v)
+{
+ unsigned char *c, *end;
+
+ putchar(' ');
+ c = v->mv_data;
+ end = c + v->mv_size;
+ while (c < end) {
+ if (isprint(*c)) {
+ if (*c == '\\')
+ putchar('\\');
+ putchar(*c);
+ } else {
+ putchar('\\');
+ hex(*c);
+ }
+ c++;
+ }
+ putchar('\n');
+}
+
+static void byte(MDB_val *v)
+{
+ unsigned char *c, *end;
+
+ putchar(' ');
+ c = v->mv_data;
+ end = c + v->mv_size;
+ while (c < end) {
+ hex(*c++);
+ }
+ putchar('\n');
+}
+
+/* Dump in BDB-compatible format */
+static int dumpit(MDB_txn *txn, MDB_dbi dbi, char *name)
+{
+ MDB_cursor *mc;
+ MDB_stat ms;
+ MDB_val key, data;
+ MDB_envinfo info;
+ unsigned int flags;
+ int rc, i;
+
+ rc = mdb_dbi_flags(txn, dbi, &flags);
+ if (rc) return rc;
+
+ rc = mdb_stat(txn, dbi, &ms);
+ if (rc) return rc;
+
+ rc = mdb_env_info(mdb_txn_env(txn), &info);
+ if (rc) return rc;
+
+ printf("VERSION=3\n");
+ printf("format=%s\n", mode & PRINT ? "print" : "bytevalue");
+ if (name)
+ printf("database=%s\n", name);
+ printf("type=btree\n");
+ printf("mapsize=%" Z "u\n", info.me_mapsize);
+ if (info.me_mapaddr)
+ printf("mapaddr=%p\n", info.me_mapaddr);
+ printf("maxreaders=%u\n", info.me_maxreaders);
+
+ if (flags & MDB_DUPSORT)
+ printf("duplicates=1\n");
+
+ for (i=0; dbflags[i].bit; i++)
+ if (flags & dbflags[i].bit)
+ printf("%s=1\n", dbflags[i].name);
+
+ printf("db_pagesize=%d\n", ms.ms_psize);
+ printf("HEADER=END\n");
+
+ rc = mdb_cursor_open(txn, dbi, &mc);
+ if (rc) return rc;
+
+ while ((rc = mdb_cursor_get(mc, &key, &data, MDB_NEXT) == MDB_SUCCESS)) {
+ if (gotsig) {
+ rc = EINTR;
+ break;
+ }
+ if (mode & PRINT) {
+ text(&key);
+ text(&data);
+ } else {
+ byte(&key);
+ byte(&data);
+ }
+ }
+ printf("DATA=END\n");
+ if (rc == MDB_NOTFOUND)
+ rc = MDB_SUCCESS;
+
+ return rc;
+}
+
+static void usage(char *prog)
+{
+ fprintf(stderr, "usage: %s [-V] [-f output] [-l] [-n] [-p] [-a|-s subdb] dbpath\n", prog);
+ exit(EXIT_FAILURE);
+}
+
+int main(int argc, char *argv[])
+{
+ int i, rc;
+ MDB_env *env;
+ MDB_txn *txn;
+ MDB_dbi dbi;
+ char *prog = argv[0];
+ char *envname;
+ char *subname = NULL;
+ int alldbs = 0, envflags = 0, list = 0;
+
+ if (argc < 2) {
+ usage(prog);
+ }
+
+ /* -a: dump main DB and all subDBs
+ * -s: dump only the named subDB
+ * -n: use NOSUBDIR flag on env_open
+ * -p: use printable characters
+ * -f: write to file instead of stdout
+ * -V: print version and exit
+ * (default) dump only the main DB
+ */
+ while ((i = getopt(argc, argv, "af:lnps:V")) != EOF) {
+ switch(i) {
+ case 'V':
+ printf("%s\n", MDB_VERSION_STRING);
+ exit(0);
+ break;
+ case 'l':
+ list = 1;
+ /*FALLTHROUGH*/;
+ case 'a':
+ if (subname)
+ usage(prog);
+ alldbs++;
+ break;
+ case 'f':
+ if (freopen(optarg, "w", stdout) == NULL) {
+ fprintf(stderr, "%s: %s: reopen: %s\n",
+ prog, optarg, strerror(errno));
+ exit(EXIT_FAILURE);
+ }
+ break;
+ case 'n':
+ envflags |= MDB_NOSUBDIR;
+ break;
+ case 'p':
+ mode |= PRINT;
+ break;
+ case 's':
+ if (alldbs)
+ usage(prog);
+ subname = optarg;
+ break;
+ default:
+ usage(prog);
+ }
+ }
+
+ if (optind != argc - 1)
+ usage(prog);
+
+#ifdef SIGPIPE
+ signal(SIGPIPE, dumpsig);
+#endif
+#ifdef SIGHUP
+ signal(SIGHUP, dumpsig);
+#endif
+ signal(SIGINT, dumpsig);
+ signal(SIGTERM, dumpsig);
+
+ envname = argv[optind];
+ rc = mdb_env_create(&env);
+ if (rc) {
+ fprintf(stderr, "mdb_env_create failed, error %d %s\n", rc, mdb_strerror(rc));
+ return EXIT_FAILURE;
+ }
+
+ if (alldbs || subname) {
+ mdb_env_set_maxdbs(env, 2);
+ }
+
+ rc = mdb_env_open(env, envname, envflags | MDB_RDONLY, 0664);
+ if (rc) {
+ fprintf(stderr, "mdb_env_open failed, error %d %s\n", rc, mdb_strerror(rc));
+ goto env_close;
+ }
+
+ rc = mdb_txn_begin(env, NULL, MDB_RDONLY, &txn);
+ if (rc) {
+ fprintf(stderr, "mdb_txn_begin failed, error %d %s\n", rc, mdb_strerror(rc));
+ goto env_close;
+ }
+
+ rc = mdb_open(txn, subname, 0, &dbi);
+ if (rc) {
+ fprintf(stderr, "mdb_open failed, error %d %s\n", rc, mdb_strerror(rc));
+ goto txn_abort;
+ }
+
+ if (alldbs) {
+ MDB_cursor *cursor;
+ MDB_val key;
+ int count = 0;
+
+ rc = mdb_cursor_open(txn, dbi, &cursor);
+ if (rc) {
+ fprintf(stderr, "mdb_cursor_open failed, error %d %s\n", rc, mdb_strerror(rc));
+ goto txn_abort;
+ }
+ while ((rc = mdb_cursor_get(cursor, &key, NULL, MDB_NEXT_NODUP)) == 0) {
+ char *str;
+ MDB_dbi db2;
+ if (memchr(key.mv_data, '\0', key.mv_size))
+ continue;
+ count++;
+ str = malloc(key.mv_size+1);
+ memcpy(str, key.mv_data, key.mv_size);
+ str[key.mv_size] = '\0';
+ rc = mdb_open(txn, str, 0, &db2);
+ if (rc == MDB_SUCCESS) {
+ if (list) {
+ printf("%s\n", str);
+ list++;
+ } else {
+ rc = dumpit(txn, db2, str);
+ if (rc)
+ break;
+ }
+ mdb_close(env, db2);
+ }
+ free(str);
+ if (rc) continue;
+ }
+ mdb_cursor_close(cursor);
+ if (!count) {
+ fprintf(stderr, "%s: %s does not contain multiple databases\n", prog, envname);
+ rc = MDB_NOTFOUND;
+ } else if (rc == MDB_NOTFOUND) {
+ rc = MDB_SUCCESS;
+ }
+ } else {
+ rc = dumpit(txn, dbi, subname);
+ }
+ if (rc && rc != MDB_NOTFOUND)
+ fprintf(stderr, "%s: %s: %s\n", prog, envname, mdb_strerror(rc));
+
+ mdb_close(env, dbi);
+txn_abort:
+ mdb_txn_abort(txn);
+env_close:
+ mdb_env_close(env);
+
+ return rc ? EXIT_FAILURE : EXIT_SUCCESS;
+}