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postgresql/src/bin/pg_dump/pg_restore.c

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/*-------------------------------------------------------------------------
*
* pg_restore.c
* pg_restore is an utility extracting postgres database definitions
* from a backup archive created by pg_dump using the archiver
* interface.
*
* pg_restore will read the backup archive and
* dump out a script that reproduces
* the schema of the database in terms of
* user-defined types
* user-defined functions
* tables
* indices
* aggregates
* operators
* ACL - grant/revoke
*
* the output script is SQL that is understood by PostgreSQL
*
* Basic process in a restore operation is:
*
* Open the Archive and read the TOC.
* Set flags in TOC entries, and *maybe* reorder them.
* Generate script to stdout
* Exit
*
* Copyright (c) 2000, Philip Warner
* Rights are granted to use this software in any way so long
* as this notice is not removed.
*
* The author is not responsible for loss or damages that may
* result from it's use.
*
*
* IDENTIFICATION
*
* Modifications - 28-Jun-2000 - pjw@rhyme.com.au
*
* Initial version. Command processing taken from original pg_dump.
*
* Modifications - 28-Jul-2000 - pjw@rhyme.com.au (1.45)
*
* Added --create, --no-owner, --superuser, --no-reconnect (pg_dump & pg_restore)
* Added code to dump 'Create Schema' statement (pg_dump)
* Don't bother to disable/enable triggers if we don't have a superuser (pg_restore)
* Cleaned up code for reconnecting to database.
* Force a reconnect as superuser before enabling/disabling triggers.
*
*-------------------------------------------------------------------------
*/
#include "pg_backup.h"
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <ctype.h>
#ifndef HAVE_STRDUP
#include "strdup.h"
#endif
#ifdef HAVE_TERMIOS_H
#include <termios.h>
#endif
#ifdef HAVE_GETOPT_H
#include <getopt.h>
#else
#include <unistd.h>
#endif
/* Forward decls */
static void usage(const char *progname);
static char* _cleanupName(char* name);
typedef struct option optType;
#ifdef HAVE_GETOPT_LONG
struct option cmdopts[] = {
{ "clean", 0, NULL, 'c' },
{ "create", 0, NULL, 'C' },
{ "data-only", 0, NULL, 'a' },
{ "dbname", 1, NULL, 'd' },
{ "file", 1, NULL, 'f' },
{ "format", 1, NULL, 'F' },
{ "function", 2, NULL, 'P' },
{ "host", 1, NULL, 'h' },
{ "ignore-version", 0, NULL, 'i'},
{ "index", 2, NULL, 'I'},
{ "list", 0, NULL, 'l'},
{ "no-acl", 0, NULL, 'x' },
{ "no-owner", 0, NULL, 'O'},
{ "no-reconnect", 0, NULL, 'R' },
{ "port", 1, NULL, 'p' },
{ "oid-order", 0, NULL, 'o'},
{ "orig-order", 0, NULL, 'N'},
{ "password", 0, NULL, 'u' },
{ "rearrange", 0, NULL, 'r'},
{ "schema-only", 0, NULL, 's' },
{ "superuser", 1, NULL, 'S' },
{ "table", 2, NULL, 't'},
{ "trigger", 2, NULL, 'T' },
{ "use-list", 1, NULL, 'U'},
{ "verbose", 0, NULL, 'v' },
{ NULL, 0, NULL, 0}
};
#endif
int main(int argc, char **argv)
{
RestoreOptions *opts;
char *progname;
int c;
Archive* AH;
char *fileSpec = NULL;
opts = NewRestoreOptions();
progname = argv[0];
if (argc > 1)
{
if (strcmp(argv[1], "--help")==0 || strcmp(argv[1], "-?")==0)
{
usage(progname);
exit(0);
}
if (strcmp(argv[1], "--version")==0 || strcmp(argv[1], "-V")==0)
{
puts("pg_restore (PostgreSQL) " PG_VERSION);
exit(0);
}
}
#ifdef HAVE_GETOPT_LONG
while ((c = getopt_long(argc, argv, "acCd:f:F:h:i:lNoOp:P:rRsS:t:T:uU:vx", cmdopts, NULL)) != EOF)
#else
while ((c = getopt(argc, argv, "acCd:f:F:h:i:lNoOp:P:rRsS:t:T:uU:vx")) != -1)
#endif
{
switch (c)
{
case 'a': /* Dump data only */
opts->dataOnly = 1;
break;
case 'c': /* clean (i.e., drop) schema prior to
* create */
opts->dropSchema = 1;
break;
case 'C':
opts->create = 1;
break;
case 'd':
if (strlen(optarg) != 0)
{
opts->dbname = strdup(optarg);
opts->useDB = 1;
}
break;
case 'f': /* output file name */
opts->filename = strdup(optarg);
break;
case 'F':
if (strlen(optarg) != 0)
opts->formatName = strdup(optarg);
break;
case 'h':
if (strlen(optarg) != 0)
opts->pghost = strdup(optarg);
break;
case 'i':
opts->ignoreVersion = 1;
break;
case 'N':
opts->origOrder = 1;
break;
case 'o':
opts->oidOrder = 1;
break;
case 'O':
opts->noOwner = 1;
break;
case 'p':
if (strlen(optarg) != 0)
opts->pgport = strdup(optarg);
break;
case 'r':
opts->rearrange = 1;
break;
case 'R':
opts->noReconnect = 1;
break;
case 'P': /* Function */
opts->selTypes = 1;
opts->selFunction = 1;
opts->functionNames = optarg ? strdup(optarg) : NULL;
break;
case 'I': /* Index */
opts->selTypes = 1;
opts->selIndex = 1;
opts->indexNames = _cleanupName(optarg);
break;
case 'T': /* Trigger */
opts->selTypes = 1;
opts->selTrigger = 1;
opts->triggerNames = _cleanupName(optarg);
break;
case 's': /* dump schema only */
opts->schemaOnly = 1;
break;
case 'S': /* Superuser username */
if (strlen(optarg) != 0)
opts->superuser = strdup(optarg);
break;
case 't': /* Dump data for this table only */
opts->selTypes = 1;
opts->selTable = 1;
opts->tableNames = _cleanupName(optarg);
break;
case 'l': /* Dump the TOC summary */
opts->tocSummary = 1;
break;
case 'u':
opts->requirePassword = 1;
break;
case 'U': /* input TOC summary file name */
opts->tocFile = strdup(optarg);
break;
case 'v': /* verbose */
opts->verbose = 1;
break;
case 'x': /* skip ACL dump */
opts->aclsSkip = 1;
break;
default:
fprintf(stderr, "Try '%s --help' for more information.\n", progname);
exit(1);
}
}
if (optind < argc) {
fileSpec = argv[optind];
} else {
fileSpec = NULL;
}
if (opts->formatName) {
switch (opts->formatName[0]) {
case 'c':
case 'C':
opts->format = archCustom;
break;
case 'f':
case 'F':
opts->format = archFiles;
break;
case 't':
case 'T':
opts->format = archTar;
break;
default:
fprintf(stderr, "%s: Unknown archive format '%s', please specify 't' or 'c'\n",
progname, opts->formatName);
exit (1);
}
}
AH = OpenArchive(fileSpec, opts->format);
/* Let the archiver know how noisy to be */
AH->verbose = opts->verbose;
if (opts->tocFile)
SortTocFromFile(AH, opts);
if (opts->oidOrder)
SortTocByOID(AH);
else if (opts->origOrder)
SortTocByID(AH);
if (opts->rearrange) {
MoveToStart(AH, "<Init>");
MoveToEnd(AH, "TABLE DATA");
MoveToEnd(AH, "BLOBS");
MoveToEnd(AH, "INDEX");
MoveToEnd(AH, "TRIGGER");
MoveToEnd(AH, "RULE");
MoveToEnd(AH, "SEQUENCE SET");
}
/* Database MUST be at start */
MoveToStart(AH, "DATABASE");
if (opts->tocSummary) {
PrintTOCSummary(AH, opts);
} else {
RestoreArchive(AH, opts);
}
CloseArchive(AH);
return 1;
}
static void usage(const char *progname)
{
printf("%s restores a PostgreSQL database from an archive created by pg_dump.\n\n"
"Usage:\n %s [options] [backup file]\n\n"
"Options:\n",
progname, progname);
#ifdef HAVE_GETOPT_LONG
puts(
" -a, --data-only dump out only the data, no schema\n"
" -c, --clean clean (drop) schema prior to create\n"
" -C, --create output commands to create the database\n"
" -d, --dbname=NAME specify database name\n"
" -f, --file=FILENAME script output file name\n"
" -F, --format {c|f} specify backup file format\n"
" -h, --host HOSTNAME server host name\n"
" -i, --index[=NAME] dump indexes or named index\n"
" -l, --list dump summarized TOC for this file\n"
" -N, --orig-order dump in original dump order\n"
" -o, --oid-order dump in oid order\n"
" -O, --no-owner do not output reconnect to database to match\n"
" object owner\n"
" -p, --port PORT server port number\n"
" -P, --function[=NAME] dump functions or named function\n"
" -r, --rearrange rearrange output to put indexes etc. at end\n"
" -R, --no-reconnect disallow ALL reconnections to the database\n"
" -s, --schema-only dump out only the schema, no data\n"
" -S, --superuser=NAME specify the superuser user name to use for\n"
" disabling triggers\n"
" -t [TABLE], --table[=TABLE] dump for this table only\n"
" -T, --trigger[=NAME] dump triggers or named trigger\n"
" -u, --password use password authentication\n"
" -U, --use-list=FILENAME use specified table of contents for ordering\n"
" output from this file\n"
" -v, --verbose verbose\n"
" -x, --no-acl skip dumping of ACLs (grant/revoke)\n");
#else /* not HAVE_GETOPT_LONG */
puts(
" -a dump out only the data, no schema\n"
" -c clean (drop) schema prior to create\n"
" -C output commands to create the database\n"
" -d NAME specify database name\n"
" -f FILENAME script output file name\n"
" -F {c|f} specify backup file format\n"
" -h HOSTNAME server host name\n"
" -i NAME dump indexes or named index\n"
" -l dump summarized TOC for this file\n"
" -N dump in original dump order\n"
" -o dump in oid order\n"
" -O do not output reconnect to database to match\n"
" object owner\n"
" -p PORT server port number\n"
" -P NAME dump functions or named function\n"
" -r rearrange output to put indexes etc at end\n"
" -R disallow ALL reconnections to the database\n"
" -s dump out only the schema, no data\n"
" -S NAME specify the superuser user name to use for\n"
" disabling triggers\n"
" -t NAME dump for this table only\n"
" -T NAME dump triggers or named trigger\n"
" -u use password authentication\n"
" -U FILENAME use specified table of contents for ordering\n"
" output from this file\n"
" -v verbose\n"
" -x skip dumping of ACLs (grant/revoke)\n");
#endif
puts("If [backup file] is not supplied, then standard input is used.\n");
puts("Report bugs to <pgsql-bugs@postgresql.org>.");
}
static char* _cleanupName(char* name)
{
int i;
if (!name || ! name[0])
return NULL;
name = strdup(name);
if (name[0] == '"')
{
strcpy(name, &name[1]);
if (name[0] && *(name + strlen(name) - 1) == '"')
*(name + strlen(name) - 1) = '\0';
}
/* otherwise, convert table name to lowercase... */
else
{
for (i = 0; name[i]; i++)
if (isupper((unsigned char) name[i]))
name[i] = tolower((unsigned char) name[i]);
}
return name;
}
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