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Commitc13ef1a

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My patch to fe-connect.c introduced a new bug which is triggered only, if
Kerberos is being used (attempt to free static memory).The error was caused by a confusing doublespeak of fe_getauthname():Returns a pointer to static memory, if you authenticate via Kerberos,a pointer to dynamic memory otherwise.Submitted by: Erich Stamberger <eberger@gewi.kfunigraz.ac.at>
1 parent1a675fe commitc13ef1a

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‎src/interfaces/libpq/fe-auth.c

Lines changed: 8 additions & 8 deletions
Original file line numberDiff line numberDiff line change
@@ -7,7 +7,7 @@
77
*
88
*
99
* IDENTIFICATION
10-
* $Header: /cvsroot/pgsql/src/interfaces/libpq/fe-auth.c,v 1.2 1996/07/23 03:35:11 scrappy Exp $
10+
* $Header: /cvsroot/pgsql/src/interfaces/libpq/fe-auth.c,v 1.3 1996/07/27 02:27:55 scrappy Exp $
1111
*
1212
*-------------------------------------------------------------------------
1313
*/
@@ -500,14 +500,15 @@ fe_getauthsvc(char* PQerrormsg)
500500
}
501501

502502
/*
503-
* fe_getauthname -- returns a pointer tostatic space containing whatever
503+
* fe_getauthname -- returns a pointer todynamic space containing whatever
504504
* name the user has authenticated to the system
505505
* if there is an error, return the error message in PQerrormsg
506506
*/
507507
char*
508508
fe_getauthname(char*PQerrormsg)
509509
{
510510
char*name= (char*)NULL;
511+
char*authn= (char*)NULL;
511512
MsgTypeauthsvc;
512513

513514
authsvc=fe_getauthsvc(PQerrormsg);
@@ -525,11 +526,7 @@ fe_getauthname(char* PQerrormsg)
525526
caseSTARTUP_MSG:
526527
{
527528
structpasswd*pw=getpwuid(geteuid());
528-
if (pw&&
529-
pw->pw_name&&
530-
(name= (char*)malloc(strlen(pw->pw_name)+1))) {
531-
(void)strcpy(name,pw->pw_name);
532-
}
529+
if (pw)name=pw->pw_name;
533530
}
534531
break;
535532
default:
@@ -538,7 +535,10 @@ fe_getauthname(char* PQerrormsg)
538535
authsvc);
539536
break;
540537
}
541-
return(name);
538+
539+
if(name&& (authn= (char*)malloc(strlen(name)+1)))
540+
(void)strcpy(authn,name);
541+
return(authn);
542542
}
543543

544544

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