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/* $Id: anonymous.c,v 1.10 2001-12-15 20:02:59 rjkaes Exp $
*
* Handles insertion and searches for headers which should be let through when
* the anonymous feature is turned on. The headers are stored in a linked
* list.
*
* Copyright (C) 2000 Robert James Kaes (rjkaes@flarenet.com)
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2, or (at your option) any
* later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*/
#include "tinyproxy.h"
#include "anonymous.h"
#include "log.h"
#include "utils.h"
/*
* Structure holding the various anonymous headers.
*/
struct anonymous_header_s {
char *header;
struct anonymous_header_s *next;
};
struct anonymous_header_s *anonymous_root = NULL;
inline short int
is_anonymous_enabled(void)
{
return (anonymous_root) ? 1 : 0;
}
/*
* Search through the linked list for the header. If it's found return 0
* else return -1.
*/
int
anonymous_search(char *s)
{
struct anonymous_header_s *ptr = anonymous_root;
assert(s != NULL);
assert(anonymous_root != NULL);
while (ptr) {
if (ptr->header) {
if (strcasecmp(ptr->header, s) == 0)
return 0;
} else
return -1;
ptr = ptr->next;
}
return -1;
}
/*
* Insert a new header into the linked list.
*
* Return -1 if there is an error, 0 if the string already exists, and 1 if
* it's been inserted.
*/
int
anonymous_insert(char *s)
{
struct anonymous_header_s *ptr;
struct anonymous_header_s **prev_ptr;
assert(s != NULL);
if (!anonymous_root) {
anonymous_root = safemalloc(sizeof(struct anonymous_header_s));
if (!anonymous_root)
return -1;
anonymous_root->header = strdup(s);
anonymous_root->next = NULL;
} else {
ptr = anonymous_root;
while (ptr) {
if (ptr->header) {
if (strcasecmp(ptr->header, s) == 0)
return 0;
}
prev_ptr = &ptr;
ptr = ptr->next;
}
ptr = (*prev_ptr)->next
= safemalloc(sizeof(struct anonymous_header_s));
if (!ptr)
return -1;
ptr->header = strdup(s);
ptr->next = NULL;
}
return 1;
}
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