2 * Claws Mail -- a GTK+ based, lightweight, and fast e-mail client
3 * Copyright (C) 2014-2015 Ricardo Mones and the Claws Mail Team
5 * This program is free software: you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation, either version 3 of the License, or
8 * (at your option) any later version.
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
15 * You should have received a copy of the GNU General Public License
16 * along with this program. If not, see <http://www.gnu.org/licenses/>.
21 #include "libravatar_missing.h"
22 #include "libravatar_prefs.h"
26 * Loads the hash table of md5sum → time from the given filename.
28 * @param filename Name of the hash table filename.
30 * @return A hash table with the entries not expired contained in
31 * the given filename or NULL if failed to load.
33 GHashTable *missing_load_from_file(const gchar *filename)
35 FILE *file = fopen(filename, "r");
37 long long unsigned seen;
39 GHashTable *table = NULL;
40 int r = 0, a = 0, d = 0;
43 if (!is_file_exist(filename)) { /* first run, return an empty table */
44 return g_hash_table_new_full(g_str_hash, g_str_equal, g_free, g_free);
46 g_warning("cannot open '%s' for reading", filename);
50 if (t == (time_t)-1) {
51 g_warning("cannot get time!");
55 table = g_hash_table_new_full(g_str_hash, g_str_equal, g_free, g_free);
57 while ((r = fscanf(file, "%s %llu\n", md5sum, &seen)) != EOF) {
58 if (t - (time_t)seen <= LIBRAVATAR_MISSING_TIME) {
59 time_t *value = g_malloc0(sizeof(time_t));
61 g_warning("cannot allocate memory");
62 g_hash_table_destroy(table);
65 *value = (time_t)seen;
66 g_hash_table_insert(table, g_strdup(md5sum), value);
73 if (fclose(file) != 0)
74 g_warning("error closing '%s'", filename);
76 debug_print("Read %d missing avatar entries, %d obsolete entries discarded\n", a, d);
81 * Saves a hash table item.
83 * @param key Hash table key, a md5sum string.
84 * @param vakue Hash table value, a time_t.
85 * @param data User data, a pointer to the open FILE being written.
87 static void missing_save_item(gpointer key, gpointer value, gpointer data)
89 FILE *file = (FILE *)data;
90 gchar *line = g_strdup_printf("%s %llu\n", (gchar *)key, *((long long unsigned *)value));
91 if (fputs(line, file) < 0)
92 g_warning("error saving missing item");
97 * Saves a hash table of md5sum → time to a given file name.
99 * @param table The table to save.
100 * @param filename The name of the file where table data will be saved.
102 * @return 0 on success, -1 if there was some problem saving.
104 gint missing_save_to_file(GHashTable *table, const gchar *filename)
106 FILE *file = fopen(filename, "w");
109 g_warning("cannot open '%s' for writing", filename);
113 g_hash_table_foreach(table, missing_save_item, (gpointer)file);
114 debug_print("Saved %u missing avatar entries\n", g_hash_table_size(table));
116 if (fclose(file) != 0) {
117 g_warning("error closing '%s'", filename);
125 * Adds a md5sum to a md5sum → time hash table.
126 * If the md5sum is already in the table its time is updated.
128 * @param table The table to use.
129 * @param md5 The md5sum to add or update.
131 void missing_add_md5(GHashTable *table, const gchar *md5)
133 time_t t = time(NULL);
135 if (t == (time_t)-1) {
136 g_warning("cannot get time!");
140 time_t *seen = g_hash_table_lookup(table, md5);
142 seen = g_malloc0(sizeof(time_t));
144 g_warning("cannot allocate memory");
148 g_hash_table_insert(table, g_strdup(md5), seen);
149 debug_print("New md5 %s added with time %llu\n", md5, (long long unsigned)t);
151 *seen = t; /* just update */
152 debug_print("Updated md5 %s with time %llu\n", md5, (long long unsigned)t);
157 * Check if a md5sum is in hash table and not expired.
159 * @param table The table to check against.
160 * @param md5 The md5sum to check.
162 * @return TRUE if the md5sum is in the table and is not expired,
165 gboolean is_missing_md5(GHashTable *table, const gchar *md5)
168 time_t *seen = (time_t *)g_hash_table_lookup(table, md5);
174 if (t != (time_t)-1) {
175 if (t - *seen <= LIBRAVATAR_MISSING_TIME) {
176 debug_print("Found missing md5 %s\n", md5);