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libpq: change PQconndefaults() to ignore invalid service files

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Previously missing or invalid service files returned NULL.  Also fix
pg_upgrade to report "out of memory" for a null return from
PQconndefaults().

Patch by Steve Singer, rewritten by me
This commit is contained in:
Bruce Momjian
2013-12-03 11:11:56 -05:00
parent 95e3d50539
commit 9e0a97f1c8
5 changed files with 23 additions and 14 deletions
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27
src/interfaces/libpq/fe-connect.c
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@ -875,7 +875,8 @@ PQconndefaults(void)
connOptions = conninfo_init(&errorBuf);
if (connOptions != NULL)
{
if (!conninfo_add_defaults(connOptions, &errorBuf))
/* pass NULL errorBuf to ignore errors */
if (!conninfo_add_defaults(connOptions, NULL))
{
PQconninfoFree(connOptions);
connOptions = NULL;
@ -4412,9 +4413,10 @@ conninfo_array_parse(const char *const * keywords, const char *const * values,
*
* Defaults are obtained from a service file, environment variables, etc.
*
* Returns TRUE if successful, otherwise FALSE; errorMessage is filled in
* upon failure. Note that failure to locate a default value is not an
* error condition here --- we just leave the option's value as NULL.
* Returns TRUE if successful, otherwise FALSE; errorMessage, if supplied,
* is filled in upon failure. Note that failure to locate a default value
* is not an error condition here --- we just leave the option's value as
* NULL.
*/
static bool
conninfo_add_defaults(PQconninfoOption *options, PQExpBuffer errorMessage)
@ -4424,9 +4426,10 @@ conninfo_add_defaults(PQconninfoOption *options, PQExpBuffer errorMessage)
/*
* If there's a service spec, use it to obtain any not-explicitly-given
* parameters.
* parameters. Ignore error if no error message buffer is passed
* because there is no way to pass back the failure message.
*/
if (parseServiceInfo(options, errorMessage) != 0)
if (parseServiceInfo(options, errorMessage) != 0 && errorMessage)
return false;
/*
@ -4448,8 +4451,9 @@ conninfo_add_defaults(PQconninfoOption *options, PQExpBuffer errorMessage)
option->val = strdup(tmp);
if (!option->val)
{
printfPQExpBuffer(errorMessage,
libpq_gettext("out of memory\n"));
if (errorMessage)
printfPQExpBuffer(errorMessage,
libpq_gettext("out of memory\n"));
return false;
}
continue;
@ -4465,8 +4469,9 @@ conninfo_add_defaults(PQconninfoOption *options, PQExpBuffer errorMessage)
option->val = strdup(option->compiled);
if (!option->val)
{
printfPQExpBuffer(errorMessage,
libpq_gettext("out of memory\n"));
if (errorMessage)
printfPQExpBuffer(errorMessage,
libpq_gettext("out of memory\n"));
return false;
}
continue;
@ -4477,7 +4482,7 @@ conninfo_add_defaults(PQconninfoOption *options, PQExpBuffer errorMessage)
*/
if (strcmp(option->keyword, "user") == 0)
{
option->val = pg_fe_getauthname(errorMessage);
option->val = pg_fe_getauthname();
continue;
}
}