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Use dollar-quoting for function bodies, unless disabled with
--disable-dollar-quoting. Andrew Dunstan
This commit is contained in:
Tom Lane
parent
48b2802eee
commit
f862c42009
@ -1,5 +1,5 @@
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<!--
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$PostgreSQL: pgsql/doc/src/sgml/ref/pg_dump.sgml,v 1.68 2003/12/01 22:07:58 momjian Exp $
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$PostgreSQL: pgsql/doc/src/sgml/ref/pg_dump.sgml,v 1.69 2004/03/23 22:06:08 tgl Exp $
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PostgreSQL documentation
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-->
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@ -420,17 +420,15 @@ PostgreSQL documentation
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</varlistentry>
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<varlistentry>
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<term><option>-X use-set-session-authorization</></term>
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<term><option>--use-set-session-authorization</></term>
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<term><option>-X disable-dollar-quoting</></term>
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<term><option>--disable-dollar-quoting</></term>
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<listitem>
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<para>
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This option is obsolete but still accepted for backwards
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compatibility.
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<application>pg_dump</application> now always behaves in the
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way formerly selected by this option.
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This option disables the use of dollar quoting for function bodies,
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and forces them to be quoted using SQL standard string syntax.
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</para>
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</listitem>
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</varlistentry>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><option>-X disable-triggers</></term>
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@ -438,18 +436,18 @@ PostgreSQL documentation
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<listitem>
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<para>
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This option is only relevant when creating a data-only dump.
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It instructs <application>pg_dump</application> to include commands
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to temporarily disable triggers on the target tables while
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the data is reloaded. Use this if you have referential
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integrity checks or other triggers on the tables that you
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do not want to invoke during data reload.
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It instructs <application>pg_dump</application> to include commands
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to temporarily disable triggers on the target tables while
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the data is reloaded. Use this if you have referential
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integrity checks or other triggers on the tables that you
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do not want to invoke during data reload.
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</para>
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<para>
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Presently, the commands emitted for <option>--disable-triggers</>
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must be done as superuser. So, you should also specify
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a superuser name with <option>-S</>, or preferably be careful to
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start the resulting script as a superuser.
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must be done as superuser. So, you should also specify
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a superuser name with <option>-S</>, or preferably be careful to
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start the resulting script as a superuser.
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</para>
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<para>
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@ -460,14 +458,27 @@ PostgreSQL documentation
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><option>-X use-set-session-authorization</></term>
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<term><option>--use-set-session-authorization</></term>
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<listitem>
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<para>
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This option is obsolete but still accepted for backwards
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compatibility.
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<application>pg_dump</application> now always behaves in the
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way formerly selected by this option.
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</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><option>-Z <replaceable class="parameter">0..9</replaceable></option></term>
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<term><option>--compress=<replaceable class="parameter">0..9</replaceable></option></term>
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<listitem>
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<para>
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Specify the compression level to use in archive formats that
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support compression. (Currently only the custom archive
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format supports compression.)
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Specify the compression level to use in archive formats that
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support compression. (Currently only the custom archive
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format supports compression.)
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</para>
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</listitem>
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</varlistentry>
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@ -7,7 +7,7 @@
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* Portions Copyright (c) 1996-2003, 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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* $PostgreSQL: pgsql/src/bin/pg_dump/dumputils.c,v 1.11 2004/01/07 00:44:21 tgl Exp $
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* $PostgreSQL: pgsql/src/bin/pg_dump/dumputils.c,v 1.12 2004/03/23 22:06:08 tgl Exp $
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*
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*-------------------------------------------------------------------------
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*/
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@ -142,6 +142,65 @@ appendStringLiteral(PQExpBuffer buf, const char *str, bool escapeAll)
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}
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/*
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* Convert a string value to a dollar quoted literal and append it to
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* the given buffer. If the dqprefix parameter is not NULL then the
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* dollar quote delimiter will begin with that (after the opening $).
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*
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* No escaping is done at all on str, in compliance with the rules
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* for parsing dollar quoted strings.
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*/
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void
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appendStringLiteralDQ(PQExpBuffer buf, const char *str, const char *dqprefix)
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{
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static const char suffixes[] = "_XXXXXXX";
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int nextchar = 0;
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PQExpBuffer delimBuf = createPQExpBuffer();
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/* start with $ + dqprefix if not NULL */
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appendPQExpBufferChar(delimBuf, '$');
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if (dqprefix)
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appendPQExpBuffer(delimBuf, dqprefix);
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/*
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* Make sure we choose a delimiter which (without the trailing $)
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* is not present in the string being quoted. We don't check with the
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* trailing $ because a string ending in $foo must not be quoted with
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* $foo$.
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*/
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while (strstr(str, delimBuf->data) != NULL)
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{
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appendPQExpBufferChar(delimBuf, suffixes[nextchar++]);
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nextchar %= sizeof(suffixes)-1;
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}
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/* add trailing $ */
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appendPQExpBufferChar(delimBuf, '$');
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/* quote it and we are all done */
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appendPQExpBufferStr(buf, delimBuf->data);
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appendPQExpBufferStr(buf, str);
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appendPQExpBufferStr(buf, delimBuf->data);
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destroyPQExpBuffer(delimBuf);
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}
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/*
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* Use dollar quoting if the string to be quoted contains ' or \,
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* otherwise use standard quoting.
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*/
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void
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appendStringLiteralDQOpt(PQExpBuffer buf, const char *str,
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bool escapeAll, const char *dqprefix)
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{
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if (strchr(str, '\'') == NULL && strchr(str, '\\') == NULL)
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appendStringLiteral(buf,str,escapeAll);
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else
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appendStringLiteralDQ(buf,str,dqprefix);
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}
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/*
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* Convert backend's version string into a number.
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*/
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@ -7,7 +7,7 @@
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* Portions Copyright (c) 1996-2003, 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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* $PostgreSQL: pgsql/src/bin/pg_dump/dumputils.h,v 1.10 2004/01/07 00:44:21 tgl Exp $
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* $PostgreSQL: pgsql/src/bin/pg_dump/dumputils.h,v 1.11 2004/03/23 22:06:08 tgl Exp $
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*
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*-------------------------------------------------------------------------
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*/
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@ -21,6 +21,10 @@
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extern const char *fmtId(const char *identifier);
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extern void appendStringLiteral(PQExpBuffer buf, const char *str,
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bool escapeAll);
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extern void appendStringLiteralDQ(PQExpBuffer buf, const char *str,
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const char *dqprefix);
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extern void appendStringLiteralDQOpt(PQExpBuffer buf, const char *str,
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bool escapeAll, const char *dqprefix);
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extern int parse_version(const char *versionString);
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extern bool parsePGArray(const char *atext, char ***itemarray, int *nitems);
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extern bool buildACLCommands(const char *name, const char *type,
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@ -12,7 +12,7 @@
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* by PostgreSQL
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*
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* IDENTIFICATION
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* $PostgreSQL: pgsql/src/bin/pg_dump/pg_dump.c,v 1.368 2004/03/20 20:09:45 tgl Exp $
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* $PostgreSQL: pgsql/src/bin/pg_dump/pg_dump.c,v 1.369 2004/03/23 22:06:08 tgl Exp $
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*
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*-------------------------------------------------------------------------
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*/
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@ -107,6 +107,9 @@ static const CatalogId nilCatalogId = { 0, 0 };
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static NamespaceInfo *g_namespaces;
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static int g_numNamespaces;
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/* flag to turn on/off dollar quoting */
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static int disable_dollar_quoting = 0;
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static void help(const char *progname);
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static NamespaceInfo *findNamespace(Oid nsoid, Oid objoid);
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@ -231,8 +234,9 @@ main(int argc, char **argv)
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* the following options don't have an equivalent short option
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* letter, but are available as '-X long-name'
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*/
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{"use-set-session-authorization", no_argument, &use_setsessauth, 1},
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{"disable-dollar-quoting", no_argument, &disable_dollar_quoting, 1},
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{"disable-triggers", no_argument, &disable_triggers, 1},
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{"use-set-session-authorization", no_argument, &use_setsessauth, 1},
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{NULL, 0, NULL, 0}
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};
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@ -385,10 +389,12 @@ main(int argc, char **argv)
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* require arguments should use '-X feature=foo'.
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*/
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case 'X':
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if (strcmp(optarg, "use-set-session-authorization") == 0)
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/* no-op, still allowed for compatibility */ ;
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if (strcmp(optarg, "disable-dollar-quoting") == 0)
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disable_dollar_quoting = 1;
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else if (strcmp(optarg, "disable-triggers") == 0)
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disable_triggers = 1;
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else if (strcmp(optarg, "use-set-session-authorization") == 0)
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/* no-op, still allowed for compatibility */ ;
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else
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{
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fprintf(stderr,
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@ -679,6 +685,8 @@ help(const char *progname)
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" plain text format\n"));
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printf(_(" -t, --table=TABLE dump the named table only\n"));
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printf(_(" -x, --no-privileges do not dump privileges (grant/revoke)\n"));
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printf(_(" -X disable-dollar-quoting, --disable-dollar-quoting\n"
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" disable dollar quoting, use SQL standard quoting\n"));
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printf(_(" -X disable-triggers, --disable-triggers\n"
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" disable triggers during data-only restore\n"));
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@ -5076,7 +5084,14 @@ dumpFunc(Archive *fout, FuncInfo *finfo)
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if (strcmp(prosrc, "-") != 0)
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{
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appendPQExpBuffer(asPart, ", ");
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appendStringLiteral(asPart, prosrc, false);
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/*
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* where we have bin, use dollar quoting if allowed and src
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* contains quote or backslash; else use regular quoting.
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*/
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if (disable_dollar_quoting)
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appendStringLiteral(asPart, prosrc, false);
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else
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appendStringLiteralDQOpt(asPart, prosrc, false, NULL);
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}
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}
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else
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@ -5084,7 +5099,11 @@ dumpFunc(Archive *fout, FuncInfo *finfo)
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if (strcmp(prosrc, "-") != 0)
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{
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appendPQExpBuffer(asPart, "AS ");
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appendStringLiteral(asPart, prosrc, false);
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/* with no bin, dollar quote src unconditionally if allowed */
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if (disable_dollar_quoting)
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appendStringLiteral(asPart, prosrc, false);
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else
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appendStringLiteralDQ(asPart, prosrc, NULL);
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}
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}
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