Library import 8 (#1074)

* Library import 8

* Add contrib/libs/cxxsupp/libcxx/include/__verbose_abort

1 files changed, 296 insertions, 0 deletions

diff --git a/contrib/libs/curl/src/tool_ipfs.c b/contrib/libs/curl/src/tool_ipfs.c
new file mode 100644
index 0000000000..435d1697ce
--- /dev/null
+++ b/contrib/libs/curl/src/tool_ipfs.c
@@ -0,0 +1,296 @@
+/***************************************************************************
+ *                                  _   _ ____  _
+ *  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 "tool_setup.h"
+
+#define ENABLE_CURLX_PRINTF
+/* use our own printf() functions */
+#include "curlx.h"
+#include "dynbuf.h"
+
+#include "tool_cfgable.h"
+#include "tool_msgs.h"
+#include "tool_ipfs.h"
+
+#include "memdebug.h" /* keep this as LAST include */
+
+/* ensure input ends in slash */
+static CURLcode ensure_trailing_slash(char **input)
+{
+  if(*input && **input) {
+    size_t len = strlen(*input);
+    if(((*input)[len - 1] != '/')) {
+      struct curlx_dynbuf dyn;
+      curlx_dyn_init(&dyn, len + 2);
+
+      if(curlx_dyn_addn(&dyn, *input, len)) {
+        Curl_safefree(*input);
+        return CURLE_OUT_OF_MEMORY;
+      }
+
+      Curl_safefree(*input);
+
+      if(curlx_dyn_addn(&dyn, "/", 1))
+        return CURLE_OUT_OF_MEMORY;
+
+      *input = curlx_dyn_ptr(&dyn);
+    }
+  }
+
+  return CURLE_OK;
+}
+
+static char *ipfs_gateway(void)
+{
+  char *ipfs_path = NULL;
+  char *gateway_composed_file_path = NULL;
+  FILE *gateway_file = NULL;
+  char *gateway = curlx_getenv("IPFS_GATEWAY");
+
+  /* Gateway is found from environment variable. */
+  if(gateway) {
+    if(ensure_trailing_slash(&gateway))
+      goto fail;
+    return gateway;
+  }
+
+  /* Try to find the gateway in the IPFS data folder. */
+  ipfs_path = curlx_getenv("IPFS_PATH");
+
+  if(!ipfs_path) {
+    char *home = curlx_getenv("HOME");
+    if(home && *home)
+      ipfs_path = aprintf("%s/.ipfs/", home);
+    /* fallback to "~/.ipfs", as that's the default location. */
+
+    Curl_safefree(home);
+  }
+
+  if(!ipfs_path || ensure_trailing_slash(&ipfs_path))
+    goto fail;
+
+  gateway_composed_file_path = aprintf("%sgateway", ipfs_path);
+
+  if(!gateway_composed_file_path)
+    goto fail;
+
+  gateway_file = fopen(gateway_composed_file_path, FOPEN_READTEXT);
+  Curl_safefree(gateway_composed_file_path);
+
+  if(gateway_file) {
+    int c;
+    struct curlx_dynbuf dyn;
+    curlx_dyn_init(&dyn, MAX_GATEWAY_URL_LEN);
+
+    /* get the first line of the gateway file, ignore the rest */
+    while((c = getc(gateway_file)) != EOF && c != '\n' && c != '\r') {
+      char c_char = (char)c;
+      if(curlx_dyn_addn(&dyn, &c_char, 1))
+        goto fail;
+    }
+
+    fclose(gateway_file);
+    gateway_file = NULL;
+
+    if(curlx_dyn_len(&dyn))
+      gateway = curlx_dyn_ptr(&dyn);
+
+    if(gateway)
+      ensure_trailing_slash(&gateway);
+
+    if(!gateway)
+      goto fail;
+
+    Curl_safefree(ipfs_path);
+
+    return gateway;
+  }
+fail:
+  if(gateway_file)
+    fclose(gateway_file);
+  Curl_safefree(gateway);
+  Curl_safefree(ipfs_path);
+  return NULL;
+}
+
+/*
+ * Rewrite ipfs://<cid> and ipns://<cid> to a HTTP(S)
+ * URL that can be handled by an IPFS gateway.
+ */
+CURLcode ipfs_url_rewrite(CURLU *uh, const char *protocol, char **url,
+                          struct OperationConfig *config)
+{
+  CURLcode result = CURLE_URL_MALFORMAT;
+  CURLUcode getResult;
+  char *gateway = NULL;
+  char *gwhost = NULL;
+  char *gwpath = NULL;
+  char *gwquery = NULL;
+  char *gwscheme = NULL;
+  char *gwport = NULL;
+  char *inputpath = NULL;
+  char *cid = NULL;
+  char *pathbuffer = NULL;
+  char *cloneurl;
+  CURLU *gatewayurl = curl_url();
+
+  if(!gatewayurl) {
+    result = CURLE_FAILED_INIT;
+    goto clean;
+  }
+
+  getResult = curl_url_get(uh, CURLUPART_HOST, &cid, CURLU_URLDECODE);
+  if(getResult || !cid)
+    goto clean;
+
+  /* We might have a --ipfs-gateway argument. Check it first and use it. Error
+   * if we do have something but if it's an invalid url.
+   */
+  if(config->ipfs_gateway) {
+    /* ensure the gateway ends in a trailing / */
+    if(ensure_trailing_slash(&config->ipfs_gateway) != CURLE_OK) {
+      result = CURLE_OUT_OF_MEMORY;
+      goto clean;
+    }
+
+    if(!curl_url_set(gatewayurl, CURLUPART_URL, config->ipfs_gateway,
+                    CURLU_GUESS_SCHEME)) {
+      gateway = strdup(config->ipfs_gateway);
+      if(!gateway) {
+        result = CURLE_URL_MALFORMAT;
+        goto clean;
+      }
+
+    }
+    else {
+      result = CURLE_BAD_FUNCTION_ARGUMENT;
+      goto clean;
+    }
+  }
+  else {
+    /* this is ensured to end in a trailing / within ipfs_gateway() */
+    gateway = ipfs_gateway();
+    if(!gateway) {
+      result = CURLE_FILE_COULDNT_READ_FILE;
+      goto clean;
+    }
+
+    if(curl_url_set(gatewayurl, CURLUPART_URL, gateway, 0)) {
+      result = CURLE_URL_MALFORMAT;
+      goto clean;
+    }
+  }
+
+  /* check for unsupported gateway parts */
+  if(curl_url_get(gatewayurl, CURLUPART_QUERY, &gwquery, 0)
+                  != CURLUE_NO_QUERY) {
+    result = CURLE_URL_MALFORMAT;
+    goto clean;
+  }
+
+  /* get gateway parts */
+  if(curl_url_get(gatewayurl, CURLUPART_HOST,
+                  &gwhost, CURLU_URLDECODE)) {
+    goto clean;
+  }
+
+  if(curl_url_get(gatewayurl, CURLUPART_SCHEME,
+                  &gwscheme, CURLU_URLDECODE)) {
+    goto clean;
+  }
+
+  curl_url_get(gatewayurl, CURLUPART_PORT, &gwport, CURLU_URLDECODE);
+  curl_url_get(gatewayurl, CURLUPART_PATH, &gwpath, CURLU_URLDECODE);
+
+  /* get the path from user input */
+  curl_url_get(uh, CURLUPART_PATH, &inputpath, CURLU_URLDECODE);
+  /* inputpath might be NULL or a valid pointer now */
+
+  /* set gateway parts in input url */
+  if(curl_url_set(uh, CURLUPART_SCHEME, gwscheme, CURLU_URLENCODE) ||
+     curl_url_set(uh, CURLUPART_HOST, gwhost, CURLU_URLENCODE) ||
+     curl_url_set(uh, CURLUPART_PORT, gwport, CURLU_URLENCODE))
+    goto clean;
+
+  /* if the input path is just a slash, clear it */
+  if(inputpath && (inputpath[0] == '/') && !inputpath[1])
+    *inputpath = '\0';
+
+  /* ensure the gateway path ends with a trailing slash */
+  ensure_trailing_slash(&gwpath);
+
+  pathbuffer = aprintf("%s%s/%s%s", gwpath, protocol, cid,
+                       inputpath ? inputpath : "");
+  if(!pathbuffer) {
+    goto clean;
+  }
+
+  if(curl_url_set(uh, CURLUPART_PATH, pathbuffer, CURLU_URLENCODE)) {
+    goto clean;
+  }
+
+  /* Free whatever it has now, rewriting is next */
+  Curl_safefree(*url);
+
+  if(curl_url_get(uh, CURLUPART_URL, &cloneurl, CURLU_URLENCODE)) {
+    goto clean;
+  }
+  /* we need to strdup the URL so that we can call free() on it later */
+  *url = strdup(cloneurl);
+  curl_free(cloneurl);
+  if(!*url)
+    goto clean;
+
+  result = CURLE_OK;
+
+clean:
+  free(gateway);
+  curl_free(gwhost);
+  curl_free(gwpath);
+  curl_free(gwquery);
+  curl_free(inputpath);
+  curl_free(gwscheme);
+  curl_free(gwport);
+  curl_free(cid);
+  curl_free(pathbuffer);
+  curl_url_cleanup(gatewayurl);
+  {
+    const char *msg = NULL;
+    switch(result) {
+    case CURLE_URL_MALFORMAT:
+      msg = "malformed target URL";
+      break;
+    case CURLE_FILE_COULDNT_READ_FILE:
+      msg = "IPFS automatic gateway detection failed";
+      break;
+    case CURLE_BAD_FUNCTION_ARGUMENT:
+      msg = "--ipfs-gateway was given a malformed URL";
+      break;
+    default:
+      break;
+    }
+    if(msg)
+      helpf(tool_stderr, msg);
+  }
+  return result;
+}