[Global]: loading init

deps/curl/docs/examples/ftpgetinfo.c

@@ -0,0 +1,93 @@
+/***************************************************************************
+ *                                  _   _ ____  _
+ *  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 <stdio.h>
+#include <string.h>
+
+#include <curl/curl.h>
+
+/* <DESC>
+ * Checks a single file's size and mtime from an FTP server.
+ * </DESC>
+ */
+
+static size_t throw_away(void *ptr, size_t size, size_t nmemb, void *data)
+{
+  (void)ptr;
+  (void)data;
+  /* we are not interested in the headers itself,
+     so we only return the size we would have saved ... */
+  return (size_t)(size * nmemb);
+}
+
+int main(void)
+{
+  char ftpurl[] = "ftp://ftp.example.com/gnu/binutils/binutils-2.19.1.tar.bz2";
+  CURL *curl;
+  CURLcode res;
+  long filetime = -1;
+  curl_off_t filesize = 0;
+  const char *filename = strrchr(ftpurl, '/') + 1;
+
+  curl_global_init(CURL_GLOBAL_DEFAULT);
+
+  curl = curl_easy_init();
+  if(curl) {
+    curl_easy_setopt(curl, CURLOPT_URL, ftpurl);
+    /* No download if the file */
+    curl_easy_setopt(curl, CURLOPT_NOBODY, 1L);
+    /* Ask for filetime */
+    curl_easy_setopt(curl, CURLOPT_FILETIME, 1L);
+    curl_easy_setopt(curl, CURLOPT_HEADERFUNCTION, throw_away);
+    curl_easy_setopt(curl, CURLOPT_HEADER, 0L);
+    /* Switch on full protocol/debug output */
+    /* curl_easy_setopt(curl, CURLOPT_VERBOSE, 1L); */
+
+    res = curl_easy_perform(curl);
+
+    if(CURLE_OK == res) {
+      /* https://curl.se/libcurl/c/curl_easy_getinfo.html */
+      res = curl_easy_getinfo(curl, CURLINFO_FILETIME, &filetime);
+      if((CURLE_OK == res) && (filetime >= 0)) {
+        time_t file_time = (time_t)filetime;
+        printf("filetime %s: %s", filename, ctime(&file_time));
+      }
+      res = curl_easy_getinfo(curl, CURLINFO_CONTENT_LENGTH_DOWNLOAD_T,
+                              &filesize);
+      if((CURLE_OK == res) && (filesize>0))
+        printf("filesize %s: %" CURL_FORMAT_CURL_OFF_T " bytes\n",
+               filename, filesize);
+    }
+    else {
+      /* we failed */
+      fprintf(stderr, "curl told us %d\n", res);
+    }
+
+    /* always cleanup */
+    curl_easy_cleanup(curl);
+  }
+
+  curl_global_cleanup();
+
+  return 0;
+}