mirror of
https://github.com/moparisthebest/hexchat
synced 2024-12-23 16:18:52 -05:00
210 lines
5.5 KiB
C
210 lines
5.5 KiB
C
/*
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Copyright (c) 2010 Samuel Lidén Borell <samuel@kodafritt.se>
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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THE SOFTWARE.
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*/
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#include <glib.h>
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#include <stdlib.h>
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#include <string.h>
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#include "irc.h"
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#include "fish.h"
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#include "misc.h"
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#include "keystore.h"
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#include "plugin_xchat.h"
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static char *keystore_password = NULL;
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/**
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* Opens the key store file: ~/.config/hexchat/addon_fishlim.conf
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*/
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static GKeyFile *getConfigFile() {
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gchar *filename = get_config_filename();
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GKeyFile *keyfile = g_key_file_new();
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g_key_file_load_from_file(keyfile, filename,
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G_KEY_FILE_KEEP_COMMENTS |
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G_KEY_FILE_KEEP_TRANSLATIONS, NULL);
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g_free(filename);
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return keyfile;
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}
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/**
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* Returns the key store password, or the default.
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*/
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static const char *get_keystore_password() {
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return (keystore_password != NULL ?
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keystore_password :
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// Silly default value...
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"blowinikey");
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}
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/**
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* Gets a value for a nick/channel from addon_fishlim.conf. Unlike
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* g_key_file_get_string, this function is case insensitive.
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*/
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static gchar *get_nick_value(GKeyFile *keyfile, const char *nick, const char *item) {
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gchar **group;
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gchar **groups = g_key_file_get_groups(keyfile, NULL);
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gchar *result = NULL;
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for (group = groups; *group != NULL; group++) {
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if (!irc_nick_cmp(*group, nick)) {
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result = g_key_file_get_string(keyfile, *group, item, NULL);
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break;
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}
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}
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g_strfreev(groups);
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return result;
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}
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/**
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* Extracts a key from the key store file.
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*/
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char *keystore_get_key(const char *nick) {
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// Get the key
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GKeyFile *keyfile = getConfigFile();
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gchar *value = get_nick_value(keyfile, nick, "key");
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g_key_file_free(keyfile);
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if (!value) return NULL;
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if (strncmp(value, "+OK ", 4) != 0) {
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// Key is stored in plaintext
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return import_glib_string(value);
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} else {
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// Key is encrypted
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const char *encrypted = value+4;
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const char *password = get_keystore_password();
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char *decrypted = fish_decrypt(password, strlen(password), encrypted);
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g_free(value);
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return decrypted;
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}
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}
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/**
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* Deletes a nick and the associated key in the key store file.
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*/
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static bool delete_nick(GKeyFile *keyfile, const char *nick) {
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gchar **group;
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gchar **groups = g_key_file_get_groups(keyfile, NULL);
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bool ok = false;
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for (group = groups; *group != NULL; group++) {
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if (!irc_nick_cmp(*group, nick)) {
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ok = g_key_file_remove_group(keyfile, *group, NULL);
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break;
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}
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}
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g_strfreev(groups);
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return ok;
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}
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/**
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* Writes the key store file to disk.
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*/
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static bool save_keystore(GKeyFile *keyfile) {
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char *filename;
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bool ok;
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// Serialize
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gsize file_length;
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gchar *file_data = g_key_file_to_data(keyfile, &file_length, NULL);
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if (!file_data) return false;
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// Write to file
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filename = get_config_filename();
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ok = g_file_set_contents(filename, file_data, file_length, NULL);
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g_free(filename);
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g_free(file_data);
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return ok;
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}
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/**
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* Sets a key in the key store file.
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*/
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bool keystore_store_key(const char *nick, const char *key) {
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const char *password;
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char *encrypted;
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char *wrapped;
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bool ok = false;
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GKeyFile *keyfile = getConfigFile();
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// Remove old key
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delete_nick(keyfile, nick);
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// Add new key
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password = get_keystore_password();
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if (password) {
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// Encrypt the password
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encrypted = fish_encrypt(password, strlen(password), key);
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if (!encrypted) goto end;
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// Prepend "+OK "
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wrapped = g_strconcat("+OK ", encrypted, NULL);
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g_free(encrypted);
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// Store encrypted in file
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g_key_file_set_string(keyfile, nick, "key", wrapped);
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free(wrapped);
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} else {
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// Store unencrypted in file
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g_key_file_set_string(keyfile, nick, "key", key);
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}
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// Save key store file
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ok = save_keystore(keyfile);
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end:
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g_key_file_free(keyfile);
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return ok;
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}
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/**
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* Deletes a nick from the key store.
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*/
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bool keystore_delete_nick(const char *nick) {
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GKeyFile *keyfile = getConfigFile();
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// Delete entry
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bool ok = delete_nick(keyfile, nick);
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// Save
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if (ok) save_keystore(keyfile);
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g_key_file_free(keyfile);
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return ok;
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}
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void keystore_secure_free(void *ptr, size_t size) {
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secure_erase(ptr, size);
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free(ptr);
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}
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