+/*
+ * 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;
+}
projects / petitboot / commitdiff