From 875973f5d756a56ea3589c059fc83664e2bb010e Mon Sep 17 00:00:00 2001 From: Tom Lane Date: Tue, 16 Feb 2016 21:08:15 -0500 Subject: [PATCH] Make plpython cope with funny characters in function names. A function name that's double-quoted in SQL can contain almost any characters, but we were using that name directly as part of the name generated for the Python-level function, and Python doesn't like anything that isn't pretty much a standard identifier. To fix, replace anything that isn't an ASCII letter or digit with an underscore in the generated name. This doesn't create any risk of duplicate Python function names because we were already appending the function OID to the generated name to ensure uniqueness. Per bug #13960 from Jim Nasby. Patch by Jim Nasby, modified a bit by me. Back-patch to all supported branches. --- src/pl/plpython/expected/plpython_test.out | 8 ++++---- src/pl/plpython/plpython.c | 10 ++++++++++ src/pl/plpython/sql/plpython_test.sql | 6 +++--- 3 files changed, 17 insertions(+), 7 deletions(-) diff --git a/src/pl/plpython/expected/plpython_test.out b/src/pl/plpython/expected/plpython_test.out index f2dda66532e..46392e420e9 100644 --- a/src/pl/plpython/expected/plpython_test.out +++ b/src/pl/plpython/expected/plpython_test.out @@ -16,8 +16,8 @@ select stupidn(); zarkon (1 row) --- test multiple arguments -CREATE FUNCTION argument_test_one(u users, a1 text, a2 text) RETURNS text +-- test multiple arguments and odd characters in function name +CREATE FUNCTION "Argument test #1"(u users, a1 text, a2 text) RETURNS text AS 'keys = list(u.keys()) keys.sort() @@ -27,8 +27,8 @@ for key in keys: words = a1 + " " + a2 + " => {" + ", ".join(out) + "}" return words' LANGUAGE plpythonu; -select argument_test_one(users, fname, lname) from users where lname = 'doe' order by 1; - argument_test_one +select "Argument test #1"(users, fname, lname) from users where lname = 'doe' order by 1; + Argument test #1 ----------------------------------------------------------------------- jane doe => {fname: jane, lname: doe, userid: 1, username: j_doe} john doe => {fname: john, lname: doe, userid: 2, username: johnd} diff --git a/src/pl/plpython/plpython.c b/src/pl/plpython/plpython.c index 3db6f7d23a7..7dd59783b43 100644 --- a/src/pl/plpython/plpython.c +++ b/src/pl/plpython/plpython.c @@ -1612,6 +1612,7 @@ PLy_procedure_create(HeapTuple procTup, Oid fn_oid, bool is_trigger) bool isnull; int i, rv; + char *ptr; procStruct = (Form_pg_proc) GETSTRUCT(procTup); rv = snprintf(procName, sizeof(procName), @@ -1621,6 +1622,15 @@ PLy_procedure_create(HeapTuple procTup, Oid fn_oid, bool is_trigger) if (rv >= sizeof(procName) || rv < 0) elog(ERROR, "procedure name would overrun buffer"); + /* Replace any not-legal-in-Python-names characters with '_' */ + for (ptr = procName; *ptr; ptr++) + { + if (!((*ptr >= 'A' && *ptr <= 'Z') || + (*ptr >= 'a' && *ptr <= 'z') || + (*ptr >= '0' && *ptr <= '9'))) + *ptr = '_'; + } + proc = PLy_malloc(sizeof(PLyProcedure)); proc->proname = PLy_strdup(NameStr(procStruct->proname)); proc->pyname = PLy_strdup(procName); diff --git a/src/pl/plpython/sql/plpython_test.sql b/src/pl/plpython/sql/plpython_test.sql index c8d5ef5f534..3a761047a09 100644 --- a/src/pl/plpython/sql/plpython_test.sql +++ b/src/pl/plpython/sql/plpython_test.sql @@ -11,8 +11,8 @@ CREATE FUNCTION stupidn() RETURNS text AS 'return "zarkon"' LANGUAGE plpython2u; select stupidn(); --- test multiple arguments -CREATE FUNCTION argument_test_one(u users, a1 text, a2 text) RETURNS text +-- test multiple arguments and odd characters in function name +CREATE FUNCTION "Argument test #1"(u users, a1 text, a2 text) RETURNS text AS 'keys = list(u.keys()) keys.sort() @@ -23,7 +23,7 @@ words = a1 + " " + a2 + " => {" + ", ".join(out) + "}" return words' LANGUAGE plpythonu; -select argument_test_one(users, fname, lname) from users where lname = 'doe' order by 1; +select "Argument test #1"(users, fname, lname) from users where lname = 'doe' order by 1; -- check module contents