X-Git-Url: https://git.street.me.uk/andy/viking.git/blobdiff_plain/3292ba8bb8e85babc44cb4f831f9b758089f1cfc..4e53f3dcd47d9208cff59bdacefdacf554b37962:/src/curl_download.c

diff --git a/src/curl_download.c b/src/curl_download.c
index 8921281c..302f4b94 100644
--- a/src/curl_download.c
+++ b/src/curl_download.c
@@ -23,41 +23,133 @@
 #include "config.h"
 #endif
 
+#include <stdio.h>
+
+#include <glib.h>
+#include <glib/gstdio.h>
+#include <glib/gi18n.h>
 #include <gtk/gtk.h>
 
-#ifdef HAVE_LIBCURL
 #include <curl/curl.h>
-#endif
 
+#include "file.h"
+#include "globals.h"
 #include "curl_download.h"
 
-int curl_download_uri ( const char *uri, FILE *f )
+/*
+ * Even if writing to FILE* is supported by libcurl by default,
+ * it seems that it is non-portable (win32 DLL specific).
+ *
+ * So, we provide our own trivial CURLOPT_WRITEFUNCTION.
+ */
+static size_t curl_write_func(void *ptr, size_t size, size_t nmemb, FILE *stream)
+{
+  return fwrite(ptr, size, nmemb, stream);
+}
+
+static gchar *get_cookie_file(gboolean init)
+{
+  static gchar *cookie_file = NULL;
+  static GMutex *mutex = NULL;
+
+  if (init) { /* to make sure  it's thread safe */
+    mutex = g_mutex_new();
+    static gchar *cookie_fn = "cookies.txt";
+    const gchar *viking_dir = a_get_viking_dir();
+    cookie_file = g_build_filename(viking_dir, cookie_fn, NULL);
+    g_unlink(cookie_file);
+    return NULL;
+  }
+
+  g_assert(cookie_file != NULL);
+
+  g_mutex_lock(mutex);
+  if (g_file_test(cookie_file, G_FILE_TEST_EXISTS) == FALSE) {  /* file not there */
+    gchar * name_tmp = NULL;
+    FILE * out_file = tmpfile();
+    if (out_file == NULL) {
+      // Something wrong with previous call (unsuported?)
+      name_tmp = g_strdup_printf("%s.tmp", cookie_file);
+      out_file = g_fopen(name_tmp, "w+b");
+    }
+    CURLcode res;
+    CURL *curl = curl_easy_init();
+    if (vik_verbose)
+      curl_easy_setopt ( curl, CURLOPT_VERBOSE, 1 );
+    curl_easy_setopt(curl, CURLOPT_URL, "http://maps.google.com/"); /* google.com sets "PREF" cookie */
+    curl_easy_setopt ( curl, CURLOPT_FILE, out_file );
+    curl_easy_setopt ( curl, CURLOPT_WRITEFUNCTION, curl_write_func);
+    curl_easy_setopt(curl, CURLOPT_COOKIEJAR, cookie_file);
+    res = curl_easy_perform(curl);
+    if (res != CURLE_OK) {
+      g_warning(_("%s() Curl perform failed: %s"), __PRETTY_FUNCTION__,
+          curl_easy_strerror(res));
+      g_unlink(cookie_file);
+    }
+    curl_easy_cleanup(curl);
+    fclose(out_file);
+    out_file = NULL;
+    if (name_tmp != NULL) {
+      g_remove(name_tmp);
+      g_free(name_tmp);
+      name_tmp = NULL;
+    }
+  }
+  g_mutex_unlock(mutex);
+
+  return(cookie_file);
+}
+
+/* This should to be called from main() to make sure thread safe */
+void curl_download_init()
+{
+  curl_global_init(CURL_GLOBAL_ALL);
+  get_cookie_file(TRUE);
+}
+
+int curl_download_uri ( const char *uri, FILE *f, DownloadOptions *options )
 {
-#ifdef HAVE_LIBCURL
   CURL *curl;
-  CURLcode res;
+  CURLcode res = CURLE_FAILED_INIT;
+  const gchar *cookie_file;
+
+  g_debug("%s: uri=%s", __PRETTY_FUNCTION__, uri);
 
   curl = curl_easy_init ();
   if ( curl )
     {
+      if (vik_verbose)
+        curl_easy_setopt ( curl, CURLOPT_VERBOSE, 1 );
       curl_easy_setopt ( curl, CURLOPT_URL, uri );
       curl_easy_setopt ( curl, CURLOPT_FILE, f );
+      curl_easy_setopt ( curl, CURLOPT_WRITEFUNCTION, curl_write_func);
+      if (options != NULL) {
+        if(options->referer != NULL)
+          curl_easy_setopt ( curl, CURLOPT_REFERER, options->referer);
+        if(options->follow_location != 0) {
+          curl_easy_setopt ( curl, CURLOPT_FOLLOWLOCATION, 1);
+          curl_easy_setopt ( curl, CURLOPT_MAXREDIRS, options->follow_location);
+        }
+      }
+      curl_easy_setopt ( curl, CURLOPT_USERAGENT, PACKAGE "/" VERSION " libcurl/7.15.4" );
+      if ((cookie_file = get_cookie_file(FALSE)) != NULL)
+        curl_easy_setopt(curl, CURLOPT_COOKIEFILE, cookie_file);
       res = curl_easy_perform ( curl );
       curl_easy_cleanup ( curl );
     }
-#endif
+  return(res);
 }
 
-int curl_download_get_url ( const char *hostname, const char *uri, FILE *f )
+int curl_download_get_url ( const char *hostname, const char *uri, FILE *f, DownloadOptions *options, gboolean ftp )
 {
   int ret;
   gchar *full = NULL;
 
   /* Compose the full url */
-  full = g_strdup_printf ( "http://%s%s", hostname, uri );
-  ret = curl_download_uri ( full, f );
+  full = g_strdup_printf ( "%s://%s%s", (ftp?"ftp":"http"), hostname, uri );
+  ret = curl_download_uri ( full, f, options );
   g_free ( full );
   full = NULL;
 
-  return ret;
+  return (ret ? -2 : 0);   /* -2 HTTP error */
 }