fetch: fix segfault after destination was not reached

[project/uclient.git] / uclient-utils.c

diff --git a/uclient-utils.c b/uclient-utils.c
index 66a4f15..a375eea 100644 (file)
--- a/uclient-utils.c
+++ b/uclient-utils.c
@@ -1,3 +1,20 @@
+/*
+ * uclient - ustream based protocol client library
+ *
+ * Copyright (C) 2014 Felix Fietkau <nbd@openwrt.org>
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
 #include <stdint.h>
 #include <stdlib.h>
 #include <string.h>
@@ -143,3 +160,25 @@ void http_digest_calculate_response(char *dest, const struct http_digest_data *d
        http_create_hash(dest, h_a2_strings, ARRAY_SIZE(h_a2_strings));
        http_create_hash(dest, resp_strings, ARRAY_SIZE(resp_strings));
 }
+
+char *uclient_get_url_filename(const char *url, const char *default_name)
+{
+       const char *str;
+       int len = strcspn(url, ";&");
+
+       while (len > 0 && url[len - 1] == '/')
+               len--;
+
+       for (str = url + len - 1; str >= url; str--) {
+               if (*str == '/')
+                       break;
+       }
+
+       str++;
+       len -= str - url;
+
+       if (len > 0)
+               return strncpy(calloc(1, len + 1), str, len);
+
+       return strdup(default_name);
+}