66 lines
1.2 KiB
C
66 lines
1.2 KiB
C
/*-------------------------------------------------------------------------
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*
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* Copyright (c) 2022-2024, PostgreSQL Global Development Group
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*
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* ldap_password_func.c
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*
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* Loadable PostgreSQL module to mutate the ldapbindpasswd. This
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* implementation just hands back the configured password rot13'd.
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*
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*-------------------------------------------------------------------------
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*/
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#include "postgres.h"
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#include <float.h>
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#include <stdio.h>
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#include "libpq/auth.h"
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#include "libpq/libpq.h"
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#include "libpq/libpq-be.h"
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#include "utils/guc.h"
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PG_MODULE_MAGIC;
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void _PG_init(void);
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void _PG_fini(void);
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/* hook function */
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static char *rot13_passphrase(char *password);
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/*
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* Module load callback
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*/
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void
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_PG_init(void)
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{
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ldap_password_hook = rot13_passphrase;
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}
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void
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_PG_fini(void)
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{
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/* do nothing yet */
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}
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static char *
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rot13_passphrase(char *pw)
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{
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size_t size = strlen(pw) + 1;
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char *new_pw = (char *) palloc(size);
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strlcpy(new_pw, pw, size);
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for (char *p = new_pw; *p; p++)
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{
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char c = *p;
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if ((c >= 'a' && c <= 'm') || (c >= 'A' && c <= 'M'))
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*p = c + 13;
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else if ((c >= 'n' && c <= 'z') || (c >= 'N' && c <= 'Z'))
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*p = c - 13;
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}
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return new_pw;
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}
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