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/*
* Copyright (C) 2009 Sony Computer Entertainment Inc.
* Copyright 2009 Sony Corp.
*
* 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; version 2 of the License.
*
* 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.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#if defined(HAVE_CONFIG_H)
#include "config.h"
#endif
#define _GNU_SOURCE
#include <assert.h>
#include <string.h>
#include "log/log.h"
#include "talloc/talloc.h"
#include "url.h"
/**
* pb_scheme_info - Helper for parsing URLs.
*/
struct pb_scheme_info {
enum pb_url_scheme scheme;
const char *str;
unsigned int str_len;
};
static const struct pb_scheme_info schemes[] = {
{
.scheme = pb_url_file,
.str = "file",
.str_len = sizeof("file") - 1,
},
{
.scheme = pb_url_ftp,
.str = "ftp",
.str_len = sizeof("ftp") - 1,
},
{
.scheme = pb_url_http,
.str = "http",
.str_len = sizeof("http") - 1,
},
{
.scheme = pb_url_https,
.str = "https",
.str_len = sizeof("https") - 1,
},
{
.scheme = pb_url_nfs,
.str = "nfs",
.str_len = sizeof("nfs") - 1,
},
{
.scheme = pb_url_sftp,
.str = "sftp",
.str_len = sizeof("sftp") - 1,
},
{
.scheme = pb_url_tftp,
.str = "tftp",
.str_len = sizeof("tftp") - 1,
},
};
static const struct pb_scheme_info *file_scheme = &schemes[0];
/**
* pb_url_find_scheme - Find the pb_scheme_info for a URL string.
*/
static const struct pb_scheme_info *pb_url_find_scheme(const char *url)
{
static const int sep_len = sizeof("://") - 1;
static const char *sep = "://";
unsigned int i, url_len;
url_len = strlen(url);
for (i = 0; i < sizeof(schemes) / sizeof(schemes[0]); i++) {
const struct pb_scheme_info *scheme = &schemes[i];
if (url_len < scheme->str_len + sep_len)
continue;
if (strncmp(url + scheme->str_len, sep, sep_len))
continue;
if (strncasecmp(url, scheme->str, scheme->str_len))
continue;
return scheme;
}
/* Assume this is a non-url local file. */
return file_scheme;
}
/**
* pb_url_parse - Parse a remote file URL.
* @ctx: The talloc context to associate with the returned string.
*
* Returns a talloc'ed struct pb_url instance on success, or NULL on error.
*/
struct pb_url *pb_url_parse(void *ctx, const char *url_str)
{
const struct pb_scheme_info *si;
struct pb_url *url;
const char *p;
pb_log("%s: '%s'\n", __func__, url_str);
if (!url_str || !*url_str) {
assert(0 && "bad url");
return NULL;
}
url = talloc_zero(ctx, struct pb_url);
if (!url)
return NULL;
si = pb_url_find_scheme(url_str);
url->scheme = si->scheme;
p = url_str + si->str_len + strlen("://");
url->full = talloc_strdup(url, url_str);
if (url->scheme == pb_url_file) {
url->port = NULL;
url->host = NULL;
url->path = talloc_strdup(url, p);
} else {
int len;
const char *col;
const char *path;
path = strchr(p, '/');
if (!path) {
pb_log("%s: parse path failed '%s'\n", __func__ , p);
goto fail;
}
col = strchr(p, ':');
if (col) {
len = path - col - 1;
url->port = len ? talloc_strndup(url, col + 1, len)
: NULL;
len = col - p;
url->host = len ? talloc_strndup(url, p, len) : NULL;
} else {
url->port = NULL;
url->host = talloc_strndup(url, p, path - p);
}
/* remove multiple leading slashes */
for (; *path && *(path+1) == '/'; path++)
;
url->path = talloc_strdup(url, path);
}
p = strrchr(url->path, '/');
if (p) {
p++;
url->dir = talloc_strndup(url, url->path, p - url->path);
url->file = talloc_strdup(url, p);
} else {
url->dir = NULL;
url->file = talloc_strdup(url, url->path);
}
pb_log(" scheme %d\n", url->scheme);
pb_log(" host '%s'\n", url->host);
pb_log(" port '%s'\n", url->port);
pb_log(" path '%s'\n", url->path);
pb_log(" dir '%s'\n", url->dir);
pb_log(" file '%s'\n", url->file);
return url;
fail:
talloc_free(url);
return NULL;
}
const char *pb_url_scheme_name(enum pb_url_scheme scheme)
{
unsigned int i;
for (i = 0; i < sizeof(schemes) / sizeof(schemes[0]); i++)
if (schemes[i].scheme == scheme)
return schemes[i].str;
return NULL;
}
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