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/*
url.c
This file is part of GNU Anubis.
Copyright (C) 2003-2014 The Anubis Team.
GNU Anubis 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 3 of the License, or (at your
option) any later version.
GNU Anubis 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.
You should have received a copy of the GNU General Public License along
with GNU Anubis. If not, see <http://www.gnu.org/licenses/>.
*/
#include "headers.h"
#include "extern.h"
#include <assert.h>
/* mech://[user[:password]@][host/]path[;arg=str[;arg=str...] */
static void
alloc_string (char **sptr, char *start, char *end)
{
size_t len = end - start;
*sptr = xmalloc (len + 1);
memcpy (*sptr, start, len);
(*sptr)[len] = 0;
}
static void
url_parse_arg (ASSOC * assoc, char *p, char *q)
{
char *s;
for (s = p; s < q && *s != '='; s++)
;
alloc_string (&assoc->key, p, s);
if (s != q)
alloc_string (&assoc->value, s + 1, q);
}
static int
url_get_args (ANUBIS_URL * url, char **str)
{
char *p;
int argc;
if (!**str)
return 0;
for (p = *str, argc = 1; *p; p++)
if (*p == ';')
argc++;
url->argc = argc;
url->argv = calloc (argc, sizeof (url->argv[0]));
assert (url->argv != NULL);
for (argc = 0, p = *str; *p; argc++)
{
char *q = strchr (p, ';');
if (q)
{
url_parse_arg (&url->argv[argc], p, q);
p = q + 1;
}
else
{
q = p + strlen (p);
url_parse_arg (&url->argv[argc], p, q);
p = q;
}
}
return 0;
}
static int
url_get_path (ANUBIS_URL * url, char **str)
{
char *p;
p = strchr (*str, ';');
if (!p)
p = *str + strlen (*str);
alloc_string (&url->path, *str, p);
*str = p;
if (*p)
++ * str;
return url_get_args (url, str);
}
/* On input str points at the beginning of host part */
static int
url_get_host (ANUBIS_URL * url, char **str)
{
char *p;
p = strchr (*str, '/');
if (p)
{
alloc_string (&url->host, *str, p);
*str = p + 1;
}
return url_get_path (url, str);
}
/* On input str points past the ':' */
static int
url_get_passwd (ANUBIS_URL * url, char **str)
{
char *p;
p = strchr (*str, '@');
if (p)
{
alloc_string (&url->passwd, *str, p);
*str = p + 1;
}
return url_get_host (url, str);
}
/* On input str points past the mech:// part */
static int
url_get_user (ANUBIS_URL * url, char **str)
{
char *p;
for (p = *str; *p && !strchr (":@", *p); p++)
;
switch (*p)
{
case ':':
alloc_string (&url->user, *str, p);
*str = p + 1;
return url_get_passwd (url, str);
case '@':
alloc_string (&url->user, *str, p);
url->passwd = NULL;
*str = p + 1;
}
return url_get_host (url, str);
}
static int
url_get_mech (ANUBIS_URL * url, char *str)
{
char *p;
if (!str)
return 1;
p = strchr (str, ':');
if (!p)
return 1;
alloc_string (&url->method, str, p);
/* Skip slashes */
for (p++; *p == '/'; p++)
;
return url_get_user (url, &p);
}
void
anubis_url_destroy (ANUBIS_URL ** url)
{
int i;
free ((*url)->method);
free ((*url)->host);
free ((*url)->path);
free ((*url)->user);
free ((*url)->passwd);
for (i = 0; i < (*url)->argc; i++)
{
free ((*url)->argv[i].key);
free ((*url)->argv[i].value);
}
free ((*url)->argv);
free (*url);
*url = NULL;
}
int
anubis_url_parse (ANUBIS_URL ** url, char *str)
{
int rc;
*url = xmalloc (sizeof (**url));
memset (*url, 0, sizeof (**url));
rc = url_get_mech (*url, str);
if (rc)
anubis_url_destroy (url);
return rc;
}
char *
anubis_url_full_path (ANUBIS_URL * url)
{
char *path;
size_t size = 1;
if (url->host)
size += strlen (url->host);
if (url->path)
size += strlen (url->path) + 1;
path = xmalloc (size + 1);
if (url->host)
{
strcpy (path, "/");
strcat (path, url->host);
}
if (url->path)
{
if (path[0])
strcat (path, "/");
strcat (path, url->path);
}
return path;
}
const char *
anubis_url_get_arg (ANUBIS_URL * url, const char *argname)
{
int i;
for (i = 0; i < url->argc; i++)
{
if (strcasecmp (url->argv[i].key, argname) == 0)
return url->argv[i].value;
}
return NULL;
}
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