/*
- clientutil.c : irssi
- Copyright (C) 2000 Timo Sirainen
+ client.c
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2 of the License, or
- (at your option) any later version.
+ Author: Pekka Riikonen <priikone@silcnet.org>
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
+ Copyright (C) 1997 - 2006 Pekka Riikonen
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; version 2 of the License.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
- You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
+/* $Id$ */
#include "module.h"
+#include "net-nonblock.h"
+#include "net-sendbuffer.h"
+#include "signals.h"
+#include "servers.h"
+#include "commands.h"
+#include "levels.h"
+#include "modules.h"
+#include "rawlog.h"
+#include "misc.h"
+#include "settings.h"
+
+#include "channels-setup.h"
+
#include "silc-servers.h"
+#include "silc-channels.h"
+#include "silc-queries.h"
+#include "silc-nicklist.h"
+#include "window-item-def.h"
+
+#include "fe-common/core/printtext.h"
+#include "fe-common/core/keyboard.h"
+#include "fe-common/silc/module-formats.h"
+
+#include "core.h"
+
+#ifdef SILC_PLUGIN
+void silc_client_print_list(char *list)
+{
+ char **items;
+ int i=0;
+
+ items = g_strsplit(list, ",", -1);
+
+ while (items[i] != NULL)
+ printformat_module("fe-common/silc", NULL, NULL,
+ MSGLEVEL_CRAP, SILCTXT_CONFIG_LIST,
+ items[i++]);
+
+ g_strfreev(items);
+}
+#endif
+
+/* Lists supported ciphers */
+
+void silc_client_list_ciphers()
+{
+ char *ciphers = silc_cipher_get_supported();
+#ifdef SILC_PLUGIN
+ printformat_module("fe-common/silc", NULL, NULL,
+ MSGLEVEL_CRAP, SILCTXT_CONFIG_ALGOS,
+ "cipher");
+ silc_client_print_list(ciphers);
+#else
+ fprintf(stdout, "%s\n", ciphers);
+#endif
+ silc_free(ciphers);
+}
+
+/* Lists supported hash functions */
+
+void silc_client_list_hash_funcs()
+{
+ char *hash = silc_hash_get_supported();
+#ifdef SILC_PLUGIN
+ printformat_module("fe-common/silc", NULL, NULL,
+ MSGLEVEL_CRAP, SILCTXT_CONFIG_ALGOS,
+ "hash");
+ silc_client_print_list(hash);
+#else
+ fprintf(stdout, "%s\n", hash);
+#endif
+ silc_free(hash);
+}
+
+/* Lists supported hash functions */
+
+void silc_client_list_hmacs()
+{
+ char *hash = silc_hmac_get_supported();
+#ifdef SILC_PLUGIN
+ printformat_module("fe-common/silc", NULL, NULL,
+ MSGLEVEL_CRAP, SILCTXT_CONFIG_ALGOS,
+ "hmac");
+ silc_client_print_list(hash);
+#else
+ fprintf(stdout, "%s\n", hash);
+#endif
+ silc_free(hash);
+}
+
+/* Lists supported PKCS algorithms */
+
+void silc_client_list_pkcs()
+{
+ char *pkcs = silc_pkcs_get_supported();
+#ifdef SILC_PLUGIN
+ printformat_module("fe-common/silc", NULL, NULL,
+ MSGLEVEL_CRAP, SILCTXT_CONFIG_ALGOS,
+ "pkcs");
+ silc_client_print_list(pkcs);
+#else
+ fprintf(stdout, "%s\n", pkcs);
+#endif
+ silc_free(pkcs);
+}
-/* Verifies received public key. If user decides to trust the key it is
- saved as trusted server key for later use. If user does not trust the
- key this returns FALSE. */
+/* This checks stats for various SILC files and directories. First it
+ checks if ~/.silc directory exist and is owned by the correct user. If
+ it doesn't exist, it will create the directory. After that it checks if
+ user's Public and Private key files exists. If they doesn't exist they
+ will be created after return. */
-int silc_client_verify_server_key(SILC_SERVER_REC *server,
- unsigned char *pk, unsigned int pk_len,
- SilcSKEPKType pk_type)
+int silc_client_check_silc_dir()
{
- char filename[256];
- char file[256];
- char *hostname, *fingerprint;
+ char filename[256], file_public_key[256], file_private_key[256];
+ char servfilename[256], clientfilename[256], friendsfilename[256];
struct stat st;
+ struct passwd *pw;
+
+ SILC_LOG_DEBUG(("Checking ~./silc directory"));
- hostname = server->connrec->address;
+ memset(filename, 0, sizeof(filename));
+ memset(file_public_key, 0, sizeof(file_public_key));
+ memset(file_private_key, 0, sizeof(file_private_key));
- if (pk_type != SILC_SKE_PK_TYPE_SILC) {
- //silc_say(client, "We don't support server %s key type", hostname);
+ pw = getpwuid(getuid());
+ if (!pw) {
+ fprintf(stderr, "silc: %s\n", strerror(errno));
return FALSE;
}
- memset(filename, 0, sizeof(filename));
- memset(file, 0, sizeof(file));
- snprintf(file, sizeof(file) - 1, "serverkey_%s_%d.pub", hostname,
- server->connrec->port);
- snprintf(filename, sizeof(filename) - 1, "%s/.silc/serverkeys/%s",
- g_get_home_dir(), file);
-
- /* Check wheter this key already exists */
- if (stat(filename, &st) < 0) {
-
- fingerprint = silc_hash_fingerprint(NULL, pk, pk_len);
- /*silc_say(client, "Received server %s public key", hostname);
- silc_say(client, "Fingerprint for the server %s key is", hostname);
- silc_say(client, "%s", fingerprint);*/
- silc_free(fingerprint);
-
- /* Ask user to verify the key and save it */
- /*if (silc_client_ask_yes_no(client,
- "Would you like to accept the key (y/n)? "))*/
- {
- /* Save the key for future checking */
- silc_pkcs_save_public_key_data(filename, pk, pk_len,
- SILC_PKCS_FILE_PEM);
- return TRUE;
+ /* We'll take home path from /etc/passwd file to be sure. */
+ snprintf(filename, sizeof(filename) - 1, "%s/", get_irssi_dir());
+ snprintf(servfilename, sizeof(servfilename) - 1, "%s/serverkeys",
+ get_irssi_dir());
+ snprintf(clientfilename, sizeof(clientfilename) - 1, "%s/clientkeys",
+ get_irssi_dir());
+ snprintf(friendsfilename, sizeof(friendsfilename) - 1, "%s/friends",
+ get_irssi_dir());
+
+ /*
+ * Check ~/.silc directory
+ */
+ if ((stat(filename, &st)) == -1) {
+ /* If dir doesn't exist */
+ if (errno == ENOENT) {
+ if (pw->pw_uid == geteuid()) {
+ if ((mkdir(filename, 0755)) == -1) {
+ fprintf(stderr, "Couldn't create `%s' directory\n", filename);
+ return FALSE;
+ }
+ } else {
+ fprintf(stderr, "Couldn't create `%s' directory due to a wrong uid!\n",
+ filename);
+ return FALSE;
}
+ } else {
+ fprintf(stderr, "%s\n", strerror(errno));
+ return FALSE;
+ }
} else {
- /* The key already exists, verify it. */
- SilcPublicKey public_key;
- unsigned char *encpk;
- unsigned int encpk_len;
-
- /* Load the key file */
- if (!silc_pkcs_load_public_key(filename, &public_key,
- SILC_PKCS_FILE_PEM))
- if (!silc_pkcs_load_public_key(filename, &public_key,
- SILC_PKCS_FILE_BIN)) {
- fingerprint = silc_hash_fingerprint(NULL, pk, pk_len);
- /*silc_say(client, "Received server %s public key", hostname);
- silc_say(client, "Fingerprint for the server %s key is", hostname);
- silc_say(client, "%s", fingerprint);*/
- silc_free(fingerprint);
- /*silc_say(client, "Could not load your local copy of the server %s key",
- hostname);
- if (silc_client_ask_yes_no(client,
- "Would you like to accept the key anyway (y/n)? "))*/
- {
- /* Save the key for future checking */
- unlink(filename);
- silc_pkcs_save_public_key_data(filename, pk, pk_len,
- SILC_PKCS_FILE_PEM);
- return TRUE;
- }
-
+
+ /* Check the owner of the dir */
+ if (st.st_uid != 0 && st.st_uid != pw->pw_uid) {
+ fprintf(stderr, "You don't seem to own `%s' directory\n",
+ filename);
+ return FALSE;
+ }
+
+#if 0
+ /* Check the permissions of the dir */
+ if ((st.st_mode & 0777) != 0755) {
+ if ((chmod(filename, 0755)) == -1) {
+ fprintf(stderr, "Permissions for `%s' directory must be 0755\n",
+ filename);
return FALSE;
}
-
- /* Encode the key data */
- encpk = silc_pkcs_public_key_encode(public_key, &encpk_len);
- if (!encpk) {
- fingerprint = silc_hash_fingerprint(NULL, pk, pk_len);
- /*silc_say(client, "Received server %s public key", hostname);
- silc_say(client, "Fingerprint for the server %s key is", hostname);
- silc_say(client, "%s", fingerprint);*/
- silc_free(fingerprint);
- /*silc_say(client, "Your local copy of the server %s key is malformed",
- hostname);
- if (silc_client_ask_yes_no(client,
- "Would you like to accept the key anyway (y/n)? "))*/
- {
- /* Save the key for future checking */
- unlink(filename);
- silc_pkcs_save_public_key_data(filename, pk, pk_len,
- SILC_PKCS_FILE_PEM);
- return TRUE;
+ }
+#endif
+ }
+
+ /*
+ * Check ~./silc/serverkeys directory
+ */
+ if ((stat(servfilename, &st)) == -1) {
+ /* If dir doesn't exist */
+ if (errno == ENOENT) {
+ if (pw->pw_uid == geteuid()) {
+ if ((mkdir(servfilename, 0755)) == -1) {
+ fprintf(stderr, "Couldn't create `%s' directory\n", servfilename);
+ return FALSE;
}
+ } else {
+ fprintf(stderr, "Couldn't create `%s' directory due to a wrong uid!\n",
+ servfilename);
+ return FALSE;
+ }
+ } else {
+ fprintf(stderr, "%s\n", strerror(errno));
+ return FALSE;
+ }
+ }
+ /*
+ * Check ~./silc/clientkeys directory
+ */
+ if ((stat(clientfilename, &st)) == -1) {
+ /* If dir doesn't exist */
+ if (errno == ENOENT) {
+ if (pw->pw_uid == geteuid()) {
+ if ((mkdir(clientfilename, 0755)) == -1) {
+ fprintf(stderr, "Couldn't create `%s' directory\n", clientfilename);
+ return FALSE;
+ }
+ } else {
+ fprintf(stderr, "Couldn't create `%s' directory due to a wrong uid!\n",
+ clientfilename);
+ return FALSE;
+ }
+ } else {
+ fprintf(stderr, "%s\n", strerror(errno));
return FALSE;
}
+ }
- if (memcmp(encpk, pk, encpk_len)) {
- fingerprint = silc_hash_fingerprint(NULL, pk, pk_len);
- /*silc_say(client, "Received server %s public key", hostname);
- silc_say(client, "Fingerprint for the server %s key is", hostname);
- silc_say(client, "%s", fingerprint);*/
- silc_free(fingerprint);
- /*silc_say(client, "Server %s key does not match with your local copy",
- hostname);
- silc_say(client, "It is possible that the key has expired or changed");
- silc_say(client, "It is also possible that some one is performing "
- "man-in-the-middle attack");*/
-
- /* Ask user to verify the key and save it */
- /*if (silc_client_ask_yes_no(client,
- "Would you like to accept the key anyway (y/n)? "))*/
- {
- /* Save the key for future checking */
- unlink(filename);
- silc_pkcs_save_public_key_data(filename, pk, pk_len,
- SILC_PKCS_FILE_PEM);
- return TRUE;
+ /*
+ * Check ~./silc/friends directory
+ */
+ if ((stat(friendsfilename, &st)) == -1) {
+ /* If dir doesn't exist */
+ if (errno == ENOENT) {
+ if (pw->pw_uid == geteuid()) {
+ if ((mkdir(friendsfilename, 0755)) == -1) {
+ fprintf(stderr, "Couldn't create `%s' directory\n", friendsfilename);
+ return FALSE;
}
+ } else {
+ fprintf(stderr, "Couldn't create `%s' directory due to a wrong uid!\n",
+ friendsfilename);
+ return FALSE;
+ }
+ } else {
+ fprintf(stderr, "%s\n", strerror(errno));
+ return FALSE;
+ }
+ }
+
+ /*
+ * Check Public and Private keys
+ */
+ snprintf(file_public_key, sizeof(file_public_key) - 1, "%s%s",
+ filename, SILC_CLIENT_PUBLIC_KEY_NAME);
+ snprintf(file_private_key, sizeof(file_private_key) - 1, "%s%s",
+ filename, SILC_CLIENT_PRIVATE_KEY_NAME);
+
+ if ((stat(file_public_key, &st)) == -1) {
+ /* If file doesn't exist */
+ if (errno == ENOENT) {
+ fprintf(stdout, "Running SILC for the first time\n");
+ silc_create_key_pair(SILC_CLIENT_DEF_PKCS,
+ SILC_CLIENT_DEF_PKCS_LEN,
+ file_public_key, file_private_key,
+ NULL, NULL, NULL, NULL, FALSE);
+ printf("Press <Enter> to continue...\n");
+ getchar();
+ } else {
+ fprintf(stderr, "%s\n", strerror(errno));
+ return FALSE;
+ }
+ }
+
+ /* Check the owner of the public key */
+ if (st.st_uid != 0 && st.st_uid != pw->pw_uid) {
+ fprintf(stderr, "You don't seem to own your public key!?\n");
+ return FALSE;
+ }
- //silc_say(client, "Will not accept server %s key", hostname);
+ if ((stat(file_private_key, &st)) == -1) {
+ /* If file doesn't exist */
+ if (errno == ENOENT) {
+ fprintf(stdout, "Your private key doesn't exist\n");
+ silc_create_key_pair(SILC_CLIENT_DEF_PKCS,
+ SILC_CLIENT_DEF_PKCS_LEN,
+ file_public_key, file_private_key,
+ NULL, NULL, NULL, NULL, FALSE);
+ printf("Press <Enter> to continue...\n");
+ getchar();
+ } else {
+ fprintf(stderr, "%s\n", strerror(errno));
return FALSE;
}
+ }
- /* Local copy matched */
- return TRUE;
+ /* Check the owner of the private key */
+ if (st.st_uid != 0 && st.st_uid != pw->pw_uid) {
+ fprintf(stderr, "You don't seem to own your private key!?\n");
+ return FALSE;
}
- //silc_say(client, "Will not accept server %s key", hostname);
- return FALSE;
+ /* Check the permissions for the private key */
+ if ((st.st_mode & 0777) != 0600) {
+ fprintf(stderr, "Wrong permissions in your private key file `%s'!\n"
+ "Trying to change them ... ", file_private_key);
+ if ((chmod(file_private_key, 0600)) == -1) {
+ fprintf(stderr,
+ "Failed to change permissions for private key file!\n"
+ "Permissions for your private key file must be 0600.\n");
+ return FALSE;
+ }
+ fprintf(stderr, "Done.\n\n");
+ }
+
+ return TRUE;
+}
+
+/* Loads public and private key from files. */
+
+int silc_client_load_keys(SilcClient client)
+{
+ char pub[256], prv[256];
+ struct passwd *pw;
+ bool ret;
+
+ SILC_LOG_DEBUG(("Loading public and private keys"));
+
+ pw = getpwuid(getuid());
+ if (!pw)
+ return FALSE;
+
+ memset(prv, 0, sizeof(prv));
+ snprintf(prv, sizeof(prv) - 1, "%s/%s",
+ get_irssi_dir(), SILC_CLIENT_PRIVATE_KEY_NAME);
+
+ memset(pub, 0, sizeof(pub));
+ snprintf(pub, sizeof(pub) - 1, "%s/%s",
+ get_irssi_dir(), SILC_CLIENT_PUBLIC_KEY_NAME);
+
+ /* Try loading first with "" passphrase, for those that didn't set
+ passphrase for private key, and only if that fails let it prompt
+ for passphrase. */
+ ret = silc_load_key_pair(pub, prv, "", &irssi_pubkey, &irssi_privkey);
+ if (!ret)
+ ret = silc_load_key_pair(pub, prv, NULL, &irssi_pubkey, &irssi_privkey);
+
+ if (!ret)
+ SILC_LOG_ERROR(("Could not load key pair"));
+
+ return ret;
+}
+
+#ifdef SILC_PLUGIN
+void create_key_passphrase(const char *answer, CREATE_KEY_REC *rec)
+{
+ char priv_key_file[128], pub_key_file[128];
+
+ signal_stop();
+
+ if ((rec->passphrase == NULL) && (answer) && (*answer != '\0')) {
+ rec->passphrase = g_strdup(answer);
+ keyboard_entry_redirect((SIGNAL_FUNC) create_key_passphrase,
+ format_get_text("fe-common/silc", NULL, NULL,
+ NULL, SILCTXT_CONFIG_PASS_ASK2),
+ ENTRY_REDIRECT_FLAG_HIDDEN, rec);
+ return;
+ }
+
+ if ((answer) && (*answer != '\0') && (rec->passphrase != NULL)) {
+ if (strcmp(answer, rec->passphrase)) {
+ printformat_module("fe-common/silc", NULL, NULL,
+ MSGLEVEL_CRAP, SILCTXT_CONFIG_PASSMISMATCH);
+ g_free(rec->pkcs);
+ g_free(rec->passphrase);
+ g_free(rec);
+ return;
+ }
+ }
+
+ memset(priv_key_file, 0, sizeof(priv_key_file));
+ memset(pub_key_file, 0, sizeof(pub_key_file));
+ snprintf(priv_key_file, sizeof(priv_key_file) - 1, "%s/%s",
+ get_irssi_dir(), SILC_CLIENT_PRIVATE_KEY_NAME);
+ snprintf(pub_key_file, sizeof(pub_key_file) - 1, "%s/%s",
+ get_irssi_dir(), SILC_CLIENT_PUBLIC_KEY_NAME);
+
+ if (silc_create_key_pair(rec->pkcs, rec->bits, pub_key_file, priv_key_file,
+ NULL, (rec->passphrase == NULL ? "" : rec->passphrase),
+ NULL, NULL, FALSE) == TRUE)
+ printformat_module("fe-common/silc", NULL, NULL,
+ MSGLEVEL_CRAP, SILCTXT_CONFIG_CREATE);
+ else
+ printformat_module("fe-common/silc", NULL, NULL,
+ MSGLEVEL_CRAP, SILCTXT_CONFIG_CREATE_FAIL);
+
+ g_free(rec->passphrase);
+ g_free(rec->pkcs);
+ g_free(rec);
+}
+
+void change_private_key_passphrase(const char *answer, CREATE_KEY_REC *rec)
+{
+ signal_stop();
+
+ if (rec->old == NULL) {
+ rec->old = g_strdup((answer == NULL ? "" : answer));
+ keyboard_entry_redirect((SIGNAL_FUNC) change_private_key_passphrase,
+ format_get_text("fe-common/silc", NULL, NULL,
+ NULL, SILCTXT_CONFIG_PASS_ASK2),
+ ENTRY_REDIRECT_FLAG_HIDDEN, rec);
+ return;
+ }
+
+ if ((rec->passphrase == NULL) && (answer) && (*answer != '\0')) {
+ rec->passphrase = g_strdup(answer);
+ keyboard_entry_redirect((SIGNAL_FUNC) change_private_key_passphrase,
+ format_get_text("fe-common/silc", NULL, NULL,
+ NULL, SILCTXT_CONFIG_PASS_ASK3),
+ ENTRY_REDIRECT_FLAG_HIDDEN, rec);
+ return;
+ }
+
+ if ((answer) && (*answer != '\0') && (rec->passphrase != NULL)) {
+ if (strcmp(answer, rec->passphrase)) {
+ printformat_module("fe-common/silc", NULL, NULL,
+ MSGLEVEL_CRAP, SILCTXT_CONFIG_PASSMISMATCH);
+ g_free(rec->old);
+ g_free(rec->file);
+ g_free(rec->pkcs);
+ g_free(rec->passphrase);
+ g_free(rec);
+ return;
+ }
+ }
+
+ if (silc_change_private_key_passphrase(rec->file, rec->old,
+ (rec->passphrase == NULL ?
+ "" : rec->passphrase)) == TRUE)
+ printformat_module("fe-common/silc", NULL, NULL,
+ MSGLEVEL_CRAP, SILCTXT_CONFIG_PASSCHANGE);
+ else
+ printformat_module("fe-common/silc", NULL, NULL,
+ MSGLEVEL_CRAP, SILCTXT_CONFIG_PASSCHANGE_FAIL);
+ g_free(rec->old);
+ g_free(rec->file);
+ g_free(rec->passphrase);
+ g_free(rec->pkcs);
+ g_free(rec);
+
}
+#endif
projects / silc.git / blobdiff