+static const char *
+uclient_split_host(const char *base, int *host_len)
+{
+ char *next, *location;
+
+ next = strchr(base, '/');
+ if (next) {
+ location = next;
+ *host_len = next - base;
+ } else {
+ location = "/";
+ *host_len = strlen(base);
+ }
+
+ return location;
+}
+
+struct uclient_url __hidden *
+uclient_get_url_location(struct uclient_url *url, const char *location)
+{
+ struct uclient_url *new_url;
+ char *host_buf, *uri_buf, *auth_buf, *port_buf;
+ int host_len = strlen(url->host) + 1;
+ int auth_len = url->auth ? strlen(url->auth) + 1 : 0;
+ int port_len = url->port ? strlen(url->port) + 1 : 0;
+ int uri_len;
+
+ if (strstr(location, "://"))
+ return uclient_get_url(location, url->auth);
+
+ if (location[0] == '/')
+ uri_len = strlen(location) + 1;
+ else
+ uri_len = strlen(url->location) + strlen(location) + 2;
+
+ new_url = calloc_a(sizeof(*url),
+ &host_buf, host_len,
+ &port_buf, port_len,
+ &uri_buf, uri_len,
+ &auth_buf, auth_len);
+
+ if (!new_url)
+ return NULL;
+
+ new_url->backend = url->backend;
+ new_url->prefix = url->prefix;
+ new_url->host = strcpy(host_buf, url->host);
+ if (url->port)
+ new_url->port = strcpy(port_buf, url->port);
+ if (url->auth)
+ new_url->auth = strcpy(auth_buf, url->auth);
+
+ new_url->location = uri_buf;
+ if (location[0] == '/')
+ strcpy(uri_buf, location);
+ else {
+ int len = strcspn(url->location, "?#");
+ char *buf = uri_buf;
+
+ memcpy(buf, url->location, len);
+ if (buf[len - 1] != '/') {
+ buf[len] = '/';
+ len++;
+ }
+
+ buf += len;
+ strcpy(buf, location);
+ }
+
+ return new_url;
+}
+
+struct uclient_url __hidden *
+uclient_get_url(const char *url_str, const char *auth_str)
+{
+ static const struct uclient_backend *backends[] = {
+ &uclient_backend_http,
+ };
+
+ const struct uclient_backend *backend;
+ const char * const *prefix = NULL;
+ struct uclient_url *url;
+ const char *location;
+ int host_len;
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(backends); i++) {
+ int prefix_len = 0;
+
+ for (prefix = backends[i]->prefix; *prefix; prefix++) {
+ prefix_len = strlen(*prefix);
+
+ if (!strncmp(url_str, *prefix, prefix_len))
+ break;
+ }
+
+ if (!*prefix)
+ continue;
+
+ url_str += prefix_len;
+ backend = backends[i];
+ break;
+ }
+
+ if (!*prefix)
+ return NULL;
+
+ location = uclient_split_host(url_str, &host_len);
+ url = __uclient_get_url(backend, url_str, host_len, location, auth_str);
+ if (!url)
+ return NULL;
+
+ url->prefix = prefix - backend->prefix;
+ return url;
+}
+