Update networking layer w/ CURL and emscripten impl

2025-11-08 01:50:36 +11:00
parent a17925904d
commit f6874dc55a
4105 changed files with 694617 additions and 179 deletions
@@ -0,0 +1,146 @@
+/***************************************************************************
+ *                                  _   _ ____  _
+ *  Project                     ___| | | |  _ \| |
+ *                             / __| | | | |_) | |
+ *                            | (__| |_| |  _ <| |___
+ *                             \___|\___/|_| \_\_____|
+ *
+ * Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
+ *
+ * This software is licensed as described in the file COPYING, which
+ * you should have received as part of this distribution. The terms
+ * are also available at https://curl.se/docs/copyright.html.
+ *
+ * You may opt to use, copy, modify, merge, publish, distribute and/or sell
+ * copies of the Software, and permit persons to whom the Software is
+ * furnished to do so, under the terms of the COPYING file.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ * SPDX-License-Identifier: curl
+ *
+ ***************************************************************************/
+
+#include "curl_setup.h"
+
+/***********************************************************************
+ * Only for IPv6-enabled builds
+ **********************************************************************/
+#ifdef CURLRES_IPV6
+
+#ifdef HAVE_NETINET_IN_H
+#include <netinet/in.h>
+#endif
+#ifdef HAVE_NETDB_H
+#include <netdb.h>
+#endif
+#ifdef HAVE_ARPA_INET_H
+#include <arpa/inet.h>
+#endif
+#ifdef __VMS
+#include <in.h>
+#include <inet.h>
+#endif
+
+#include "urldata.h"
+#include "cfilters.h"
+#include "sendf.h"
+#include "hostip.h"
+#include "hash.h"
+#include "share.h"
+#include "url.h"
+#include "curlx/inet_pton.h"
+#include "connect.h"
+
+/* The last 2 #include files should be in this order */
+#include "curl_memory.h"
+#include "memdebug.h"
+
+#ifdef CURLRES_SYNCH
+
+#ifdef DEBUG_ADDRINFO
+static void dump_addrinfo(const struct Curl_addrinfo *ai)
+{
+  curl_mprintf("dump_addrinfo:\n");
+  for(; ai; ai = ai->ai_next) {
+    char buf[INET6_ADDRSTRLEN];
+    curl_mprintf("    fam %2d, CNAME %s, ",
+                 ai->ai_family,
+                 ai->ai_canonname ? ai->ai_canonname : "<none>");
+    Curl_printable_address(ai, buf, sizeof(buf));
+    curl_mprintf("%s\n", buf);
+  }
+}
+#else
+#define dump_addrinfo(x) Curl_nop_stmt
+#endif
+
+/*
+ * Curl_sync_getaddrinfo() when built IPv6-enabled (non-threading and
+ * non-ares version).
+ *
+ * Returns name information about the given hostname and port number. If
+ * successful, the 'addrinfo' is returned and the fourth argument will point
+ * to memory we need to free after use. That memory *MUST* be freed with
+ * Curl_freeaddrinfo(), nothing else.
+ */
+struct Curl_addrinfo *Curl_sync_getaddrinfo(struct Curl_easy *data,
+                                            const char *hostname,
+                                            int port,
+                                            int ip_version)
+{
+  struct addrinfo hints;
+  struct Curl_addrinfo *res;
+  int error;
+  char sbuf[12];
+  char *sbufptr = NULL;
+#ifndef USE_RESOLVE_ON_IPS
+  char addrbuf[128];
+#endif
+  int pf = PF_INET;
+
+  if((ip_version != CURL_IPRESOLVE_V4) && Curl_ipv6works(data))
+    /* The stack seems to be IPv6-enabled */
+    pf = PF_UNSPEC;
+
+  memset(&hints, 0, sizeof(hints));
+  hints.ai_family = pf;
+  hints.ai_socktype =
+    (Curl_conn_get_transport(data, data->conn) == TRNSPRT_TCP) ?
+    SOCK_STREAM : SOCK_DGRAM;
+
+#ifndef USE_RESOLVE_ON_IPS
+  /*
+   * The AI_NUMERICHOST must not be set to get synthesized IPv6 address from
+   * an IPv4 address on iOS and macOS.
+   */
+  if((curlx_inet_pton(AF_INET, hostname, addrbuf) == 1) ||
+     (curlx_inet_pton(AF_INET6, hostname, addrbuf) == 1)) {
+    /* the given address is numerical only, prevent a reverse lookup */
+    hints.ai_flags = AI_NUMERICHOST;
+  }
+#endif
+
+  if(port) {
+    curl_msnprintf(sbuf, sizeof(sbuf), "%d", port);
+    sbufptr = sbuf;
+  }
+
+  error = Curl_getaddrinfo_ex(hostname, sbufptr, &hints, &res);
+  if(error) {
+    infof(data, "getaddrinfo(3) failed for %s:%d", hostname, port);
+    return NULL;
+  }
+
+  if(port) {
+    Curl_addrinfo_set_port(res, port);
+  }
+
+  dump_addrinfo(res);
+
+  return res;
+}
+#endif /* CURLRES_SYNCH */
+
+#endif /* CURLRES_IPV6 */