mirror of
https://git.postgresql.org/git/postgresql.git
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605 lines
14 KiB
C
605 lines
14 KiB
C
/*-------------------------------------------------------------------------
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*
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* pg_dumpall
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*
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* Portions Copyright (c) 1996-2002, PostgreSQL Global Development Group
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* Portions Copyright (c) 1994, Regents of the University of California
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*
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*
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* $Header: /cvsroot/pgsql/src/bin/pg_dump/pg_dumpall.c,v 1.1 2002/08/27 18:57:26 petere Exp $
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*
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*-------------------------------------------------------------------------
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*/
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#include "postgres_fe.h"
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#include <unistd.h>
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#ifdef ENABLE_NLS
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#include <locale.h>
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#endif
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#ifdef HAVE_GETOPT_H
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#include <getopt.h>
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#endif
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#ifndef HAVE_STRDUP
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#include "strdup.h"
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#endif
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#include <errno.h>
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#include "dumputils.h"
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#include "libpq-fe.h"
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#include "pg_backup.h"
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#include "pqexpbuffer.h"
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#define _(x) gettext((x))
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static char *progname;
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static void help(void);
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static void dumpUsers(PGconn *conn);
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static void dumpGroups(PGconn *conn);
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static void dumpCreateDB(PGconn *conn);
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static void dumpDatabases(PGconn *conn);
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static int runPgDump(const char *dbname);
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static PGconn *connectDatabase(const char *dbname, const char *pghost, const char *pgport,
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const char *pguser, bool require_password);
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static PGresult *executeQuery(PGconn *conn, const char *query);
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static char *findPgDump(const char *argv0);
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char *pgdumploc;
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PQExpBuffer pgdumpopts;
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bool output_clean = false;
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bool verbose = false;
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int
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main(int argc, char *argv[])
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{
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char *pghost = NULL;
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char *pgport = NULL;
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char *pguser = NULL;
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bool force_password = false;
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bool globals_only = false;
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PGconn *conn;
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int c;
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#ifdef HAVE_GETOPT_LONG
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static struct option long_options[] = {
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{"clean", no_argument, NULL, 'c'},
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{"inserts", no_argument, NULL, 'd'},
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{"attribute-inserts", no_argument, NULL, 'D'},
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{"column-inserts", no_argument, NULL, 'D'},
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{"host", required_argument, NULL, 'h'},
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{"ignore-version", no_argument, NULL, 'i'},
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{"oids", no_argument, NULL, 'o'},
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{"port", required_argument, NULL, 'p'},
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{"password", no_argument, NULL, 'W'},
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{"username", required_argument, NULL, 'U'},
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{"verbose", no_argument, NULL, 'v'},
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{NULL, 0, NULL, 0}
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};
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int optindex;
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#endif
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#ifdef ENABLE_NLS
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setlocale(LC_ALL, "");
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bindtextdomain("pg_dump", LOCALEDIR);
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textdomain("pg_dump");
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#endif
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if (!strrchr(argv[0], '/'))
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progname = argv[0];
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else
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progname = strrchr(argv[0], '/') + 1;
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if (argc > 1)
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{
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if (strcmp(argv[1], "--help") == 0 || strcmp(argv[1], "-?") == 0)
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{
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help();
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exit(0);
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}
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if (strcmp(argv[1], "--version") == 0 || strcmp(argv[1], "-V") == 0)
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{
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puts("pg_dumpall (PostgreSQL) " PG_VERSION);
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exit(0);
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}
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}
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pgdumploc = findPgDump(argv[0]);
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pgdumpopts = createPQExpBuffer();
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#ifdef HAVE_GETOPT_LONG
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while ((c = getopt_long(argc, argv, "cdDgh:iop:U:vW", long_options, &optindex)) != -1)
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#else
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while ((c = getopt(argc, argv, "cdDgh:iop:U:vW")) != -1)
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#endif
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{
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switch (c)
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{
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case 'c':
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output_clean = true;
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appendPQExpBuffer(pgdumpopts, " -c");
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break;
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case 'd':
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case 'D':
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appendPQExpBuffer(pgdumpopts, " -%c", c);
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break;
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case 'g':
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globals_only = true;
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break;
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case 'h':
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pghost = optarg;
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appendPQExpBuffer(pgdumpopts, " -h '%s'", pghost);
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break;
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case 'i':
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case 'o':
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appendPQExpBuffer(pgdumpopts, " -%c", c);
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break;
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case 'p':
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pgport = optarg;
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appendPQExpBuffer(pgdumpopts, " -p '%s'", pgport);
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break;
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case 'U':
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pguser = optarg;
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appendPQExpBuffer(pgdumpopts, " -U '%s'", pguser);
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break;
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case 'v':
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verbose = true;
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appendPQExpBuffer(pgdumpopts, " -v");
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break;
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case 'W':
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force_password = true;
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appendPQExpBuffer(pgdumpopts, " -W");
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break;
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default:
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fprintf(stderr, _("Try '%s --help' for more information.\n"), progname);
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exit(1);
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}
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}
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if (optind < argc)
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{
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fprintf(stderr,
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_("%s: too many command line options (first is '%s')\n"
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"Try '%s --help' for more information.\n"),
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progname, argv[optind], progname);
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exit(1);
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}
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conn = connectDatabase("template1", pghost, pgport, pguser, force_password);
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printf("--\n");
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printf("-- PostgreSQL database cluster dump\n");
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printf("--\n\n");
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printf("\\connect \"template1\"\n\n");
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dumpUsers(conn);
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dumpGroups(conn);
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if (globals_only)
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goto end;
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dumpCreateDB(conn);
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dumpDatabases(conn);
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end:
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PQfinish(conn);
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exit(0);
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}
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static void
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help(void)
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{
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printf(_("%s extracts a PostgreSQL database cluster into an SQL script file.\n\n"), progname);
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printf(_("Usage:\n"));
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printf(_(" %s [OPTIONS]\n\n"), progname);
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printf(_("Options:\n"));
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#ifdef HAVE_GETOPT_LONG
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printf(_(" -c, --clean clean (drop) schema prior to create\n"));
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printf(_(" -d, --inserts dump data as INSERT, rather than COPY, commands\n"));
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printf(_(" -D, --column-inserts dump data as INSERT commands with column names\n"));
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printf(_(" -g, --globals-only only dump global objects, no databases\n"));
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printf(_(" -h, --host=HOSTNAME database server host name\n"));
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printf(_(" -i, --ignore-version proceed even when server version mismatches\n"
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" pg_dumpall version\n"));
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printf(_(" -o, --oids include OIDs in dump\n"));
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printf(_(" -p, --port=PORT database server port number\n"));
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printf(_(" -U, --username=NAME connect as specified database user\n"));
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printf(_(" -v, --verbose verbose mode\n"));
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printf(_(" -W, --password force password prompt (should happen automatically)\n"));
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#else /* not HAVE_GETOPT_LONG */
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printf(_(" -c clean (drop) schema prior to create\n"));
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printf(_(" -d dump data as INSERT, rather than COPY, commands\n"));
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printf(_(" -D dump data as INSERT commands with column names\n"));
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printf(_(" -g only dump global objects, no databases\n"));
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printf(_(" -h HOSTNAME database server host name\n"));
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printf(_(" -i proceed even when server version mismatches\n"
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" pg_dumpall version\n"));
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printf(_(" -o include oids in dump\n"));
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printf(_(" -p PORT database server port number\n"));
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printf(_(" -U NAME connect as specified database user\n"));
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printf(_(" -v verbose mode\n"));
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printf(_(" -W force password prompt (should happen automatically)\n"));
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#endif /* not HAVE_GETOPT_LONG */
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printf(_("\nThe SQL script will be written to the standard output.\n\n"));
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printf(_("Report bugs to <pgsql-bugs@postgresql.org>.\n"));
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}
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/*
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* Dump users (but not the user created by initdb).
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*/
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static void
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dumpUsers(PGconn *conn)
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{
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PGresult *res;
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int i;
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printf("DELETE FROM pg_shadow WHERE usesysid <> (SELECT datdba FROM pg_database WHERE datname = 'template0');\n\n");
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res = executeQuery(conn,
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"SELECT usename, usesysid, passwd, usecreatedb, usesuper, CAST(valuntil AS timestamp) "
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"FROM pg_shadow "
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"WHERE usesysid <> (SELECT datdba FROM pg_database WHERE datname = 'template0');");
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for (i = 0; i < PQntuples(res); i++)
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{
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PQExpBuffer buf = createPQExpBuffer();
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appendPQExpBuffer(buf, "CREATE USER %s WITH SYSID %s",
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fmtId(PQgetvalue(res, i, 0)),
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PQgetvalue(res, i, 1));
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if (!PQgetisnull(res, i, 2))
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{
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appendPQExpBuffer(buf, " PASSWORD ");
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appendStringLiteral(buf, PQgetvalue(res, i, 2), true);
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}
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if (strcmp(PQgetvalue(res, i, 3), "t")==0)
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appendPQExpBuffer(buf, " CREATEDB");
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else
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appendPQExpBuffer(buf, " NOCREATEDB");
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if (strcmp(PQgetvalue(res, i, 4), "t")==0)
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appendPQExpBuffer(buf, " CREATEUSER");
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else
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appendPQExpBuffer(buf, " NOCREATEUSER");
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if (!PQgetisnull(res, i, 5))
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appendPQExpBuffer(buf, " VALID UNTIL '%s'", PQgetvalue(res, i, 5));
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appendPQExpBuffer(buf, ";\n");
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printf("%s", buf->data);
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destroyPQExpBuffer(buf);
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}
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PQclear(res);
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printf("\n\n");
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}
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/*
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* Dump groups.
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*/
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static void
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dumpGroups(PGconn *conn)
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{
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PGresult *res;
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int i;
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printf("DELETE FROM pg_group;\n\n");
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res = executeQuery(conn, "SELECT groname, grosysid, grolist FROM pg_group;");
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for (i = 0; i < PQntuples(res); i++)
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{
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PQExpBuffer buf = createPQExpBuffer();
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char *val;
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char *tok;
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appendPQExpBuffer(buf, "CREATE GROUP %s WITH SYSID %s;\n",
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fmtId(PQgetvalue(res, i, 0)),
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PQgetvalue(res, i, 1));
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val = strdup(PQgetvalue(res, i, 2));
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tok = strtok(val, ",{}");
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do
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{
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PGresult *res2;
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PQExpBuffer buf2 = createPQExpBuffer();
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int j;
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appendPQExpBuffer(buf2, "SELECT usename FROM pg_shadow WHERE usesysid = %s;", tok);
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res2 = executeQuery(conn, buf2->data);
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destroyPQExpBuffer(buf2);
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for (j = 0; j < PQntuples(res2); j++)
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{
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appendPQExpBuffer(buf, "ALTER GROUP %s ", fmtId(PQgetvalue(res, i, 0)));
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appendPQExpBuffer(buf, "ADD USER %s;\n", fmtId(PQgetvalue(res2, j, 0)));
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}
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PQclear(res2);
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tok = strtok(NULL, "{},");
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}
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while (tok);
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printf("%s", buf->data);
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destroyPQExpBuffer(buf);
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}
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PQclear(res);
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printf("\n\n");
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}
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/*
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* Dump commands to create each database.
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*
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* To minimize the number of reconnections (and possibly ensuing
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* password prompts) required by the output script, we emit all CREATE
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* DATABASE commands during the initial phase of the script, and then
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* run pg_dump for each database to dump the contents of that
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* database. We skip databases marked not datallowconn, since we'd be
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* unable to connect to them anyway (and besides, we don't want to
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* dump template0).
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*/
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static void
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dumpCreateDB(PGconn *conn)
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{
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PGresult *res;
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int i;
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/* Basically this query returns: dbname, dbowner, encoding, istemplate, dbpath */
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res = executeQuery(conn, "SELECT datname, coalesce(usename, (select usename from pg_shadow where usesysid=(select datdba from pg_database where datname='template0'))), pg_encoding_to_char(d.encoding), datistemplate, datpath FROM pg_database d LEFT JOIN pg_shadow u ON (datdba = usesysid) WHERE datallowconn ORDER BY 1;");
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for (i = 0; i < PQntuples(res); i++)
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{
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PQExpBuffer buf = createPQExpBuffer();
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char *dbname = PQgetvalue(res, i, 0);
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char *dbowner = PQgetvalue(res, i, 1);
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char *dbencoding = PQgetvalue(res, i, 2);
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char *dbistemplate = PQgetvalue(res, i, 3);
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char *dbpath = PQgetvalue(res, i, 4);
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if (strcmp(dbname, "template1")==0)
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continue;
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if (output_clean)
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appendPQExpBuffer(buf, "DROP DATABASE %s\n;", fmtId(dbname));
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appendPQExpBuffer(buf, "CREATE DATABASE %s", fmtId(dbname));
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appendPQExpBuffer(buf, " WITH OWNER = %s TEMPLATE = template0", fmtId(dbowner));
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if (strcmp(dbpath, "")!=0)
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{
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appendPQExpBuffer(buf, " LOCATION = ");
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appendStringLiteral(buf, dbpath, true);
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}
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appendPQExpBuffer(buf, " ENCODING = ");
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appendStringLiteral(buf, dbencoding, true);
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appendPQExpBuffer(buf, ";\n");
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if (strcmp(dbistemplate, "t")==0)
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{
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appendPQExpBuffer(buf, "UPDATE pg_database SET datistemplate = 't' WHERE datname = ");
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appendStringLiteral(buf, dbname, true);
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appendPQExpBuffer(buf, ";\n");
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}
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printf("%s", buf->data);
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destroyPQExpBuffer(buf);
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}
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PQclear(res);
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printf("\n\n");
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}
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/*
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* Dump contents of databases.
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*/
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static void
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dumpDatabases(PGconn *conn)
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{
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PGresult *res;
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int i;
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res = executeQuery(conn, "SELECT datname FROM pg_database WHERE datallowconn ORDER BY 1;");
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for (i = 0; i < PQntuples(res); i++)
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{
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int ret;
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char *dbname = PQgetvalue(res, i, 0);
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if (verbose)
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fprintf(stderr, _("%s: dumping database \"%s\"...\n"), progname, dbname);
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printf("\\connect %s\n", fmtId(dbname));
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ret = runPgDump(dbname);
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if (ret != 0)
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{
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fprintf(stderr, _("%s: pg_dump failed on %s, exiting\n"), progname, dbname);
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exit(1);
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}
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}
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PQclear(res);
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}
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/*
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* Run pg_dump on dbname.
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*/
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static int
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runPgDump(const char *dbname)
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{
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PQExpBuffer cmd = createPQExpBuffer();
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int ret;
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appendPQExpBuffer(cmd, "%s %s -X use-set-session-authorization -Fp %s",
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pgdumploc, pgdumpopts->data, dbname);
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if (verbose)
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fprintf(stderr, _("%s: running %s\n"), progname, cmd->data);
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ret = system(cmd->data);
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destroyPQExpBuffer(cmd);
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return ret;
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}
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/*
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* Make a database connection with the given parameters. An
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* interactive password prompt is automatically issued if required.
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*/
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static PGconn *
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connectDatabase(const char *dbname, const char *pghost, const char *pgport,
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const char *pguser, bool require_password)
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{
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PGconn *conn;
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char *password = NULL;
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bool need_pass = false;
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if (require_password)
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password = simple_prompt("Password: ", 100, false);
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/*
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* Start the connection. Loop until we have a password if requested
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* by backend.
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*/
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do
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{
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need_pass = false;
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conn = PQsetdbLogin(pghost, pgport, NULL, NULL, dbname, pguser, password);
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if (!conn)
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{
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fprintf(stderr, _("%s: could not connection to database %s\n"),
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progname, dbname);
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exit(0);
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}
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if (PQstatus(conn) == CONNECTION_BAD &&
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strcmp(PQerrorMessage(conn), "fe_sendauth: no password supplied\n") == 0 &&
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!feof(stdin))
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{
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PQfinish(conn);
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need_pass = true;
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free(password);
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password = NULL;
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password = simple_prompt("Password: ", 100, false);
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}
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} while (need_pass);
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if (password)
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free(password);
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/* check to see that the backend connection was successfully made */
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if (PQstatus(conn) == CONNECTION_BAD)
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{
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fprintf(stderr, _("%s: could not connection to database %s: %s\n"),
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progname, dbname, PQerrorMessage(conn));
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exit(0);
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}
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return conn;
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}
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/*
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* Run a query, return the results, exit program on failure.
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*/
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static PGresult *
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executeQuery(PGconn *conn, const char *query)
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{
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PGresult *res;
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res = PQexec(conn, query);
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if (!res ||
|
|
PQresultStatus(res) != PGRES_TUPLES_OK)
|
|
{
|
|
fprintf(stderr, _("%s: query failed: %s"), progname, PQerrorMessage(conn));
|
|
fprintf(stderr, _("%s: query was: %s"), progname, query);
|
|
PQfinish(conn);
|
|
exit(1);
|
|
}
|
|
|
|
return res;
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
* Find location of pg_dump executable.
|
|
*/
|
|
static char *
|
|
findPgDump(const char *argv0)
|
|
{
|
|
char *last;
|
|
PQExpBuffer cmd;
|
|
static char *result = NULL;
|
|
|
|
if (result)
|
|
return result;
|
|
|
|
cmd = createPQExpBuffer();
|
|
last = strrchr(argv0, '/');
|
|
|
|
if (!last)
|
|
appendPQExpBuffer(cmd, "pg_dump");
|
|
else
|
|
{
|
|
char *dir = strdup(argv0);
|
|
*(dir + (last - argv0)) = '\0';
|
|
appendPQExpBuffer(cmd, "%s/pg_dump", dir);
|
|
}
|
|
|
|
result = strdup(cmd->data);
|
|
|
|
appendPQExpBuffer(cmd, " -V >/dev/null 2>&1");
|
|
if (system(cmd->data)==0)
|
|
goto end;
|
|
|
|
result = BINDIR "/pg_dump";
|
|
if (system(BINDIR "/pg_dump -V >/dev/null 2>&1")==0)
|
|
goto end;
|
|
|
|
fprintf(stderr, _("%s: could not find pg_dump\n"
|
|
"Make sure it is in the path or in the same directory as %s.\n"),
|
|
progname, progname);
|
|
exit(1);
|
|
|
|
end:
|
|
destroyPQExpBuffer(cmd);
|
|
return result;
|
|
}
|