+/*
+ * 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>
#include <ctype.h>
+#include <libubox/md5.h>
+#include <libubox/utils.h>
+
#include "uclient-utils.h"
static const char *b64 =
*out = 0;
return ret;
}
+
+static char hex_digit(char val)
+{
+ val += val > 9 ? 'a' - 10 : '0';
+ return val;
+}
+
+void bin_to_hex(char *dest, const void *buf, int len)
+{
+ const uint8_t *data = buf;
+ int i;
+
+ for (i = 0; i < len; i++) {
+ *(dest++) = hex_digit(data[i] >> 4);
+ *(dest++) = hex_digit(data[i] & 0xf);
+ }
+ *dest = 0;
+}
+
+static void http_create_hash(char *dest, const char * const * str, int n_str)
+{
+ uint32_t hash[4];
+ md5_ctx_t md5;
+ int i;
+
+ md5_begin(&md5);
+ for (i = 0; i < n_str; i++) {
+ if (i)
+ md5_hash(":", 1, &md5);
+ md5_hash(str[i], strlen(str[i]), &md5);
+ }
+ md5_end(hash, &md5);
+ bin_to_hex(dest, &hash, sizeof(hash));
+}
+
+void http_digest_calculate_auth_hash(char *dest, const char *user, const char *realm, const char *password)
+{
+ const char *hash_str[] = {
+ user,
+ realm,
+ password
+ };
+
+ http_create_hash(dest, hash_str, ARRAY_SIZE(hash_str));
+}
+
+void http_digest_calculate_response(char *dest, const struct http_digest_data *data)
+{
+ const char *h_a2_strings[] = {
+ data->method,
+ data->uri,
+ };
+ const char *resp_strings[] = {
+ data->auth_hash,
+ data->nonce,
+ data->nc,
+ data->cnonce,
+ data->qop,
+ dest, /* initialized to H(A2) first */
+ };
+
+ 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);
+}