+++ /dev/null
-/*
-
- client.c
-
- Author: Pekka Riikonen <priikone@poseidon.pspt.fi>
-
- Copyright (C) 1997 - 2000 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; either version 2 of the License, or
- (at your option) any later version.
-
- 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.
-
-*/
-/* $Id$ */
-
-#include "clientincludes.h"
-
-/* Routine used to print lines to window. This can split the
- line neatly if a word would overlap the line. */
-
-void silc_print_to_window(WINDOW *win, char *message)
-{
- int str_len, len;
-
- str_len = strlen(message);
-
- if (str_len > COLS - 1) {
- /* Split overlapping words to next line */
- /* XXX In principal this is wrong as this modifies the original
- string as it replaces the last ' ' with '\n'. This could be done
- with little more work so that it would not replace anything. */
- len = COLS - 1;
- while (1) {
-
- while (len && message[len] != ' ')
- len--;
-
- if (!len)
- break;
-
- message[len] = '\n';
- len += COLS - 1;
- if (len > str_len)
- break;
- }
- }
-
- wprintw(win, "%s", message);
- wrefresh(win);
-}
-
-/* Prints message to the screen. This is used to print the messages
- user is typed and message that came on channels. */
-
-void silc_print(SilcClient client, char *msg, ...)
-{
- va_list vp;
- char message[2048];
- SilcClientInternal app = client->application;
-
- memset(message, 0, sizeof(message));
- strncat(message, "\n ", 2);
-
- va_start(vp, msg);
- vsprintf(message + 1, msg, vp);
- va_end(vp);
-
- /* Print the message */
- silc_print_to_window(app->screen->output_win[0], message);
-}
-
-/* Returns user's mail path */
-
-char *silc_get_mail_path()
-{
- char pathbuf[MAXPATHLEN];
- char *path;
-
-#ifndef _PATH_MAILDIR
-#define _PATH_MAILDIR "/var/mail"
-#endif
-
- path = getenv("MAIL");
- if (path) {
- strncpy(pathbuf, path, strlen(path));
- } else {
- strcpy(pathbuf, _PATH_MAILDIR);
- strcat(pathbuf, "/");
- strcat(pathbuf, silc_get_username());
- }
-
- return strdup(pathbuf);
-}
-
-/* gets the number of the user's mails, if possible */
-
-int silc_get_number_of_emails()
-{
- FILE *tl;
- int num = 0;
- char *filename;
- char data[1024];
-
- filename = silc_get_mail_path();
-
- tl = fopen(filename, "r");
- if (!tl) {
- fprintf(stderr, "Couldn't open mail file (%s).\n", filename);
- } else {
- while((fscanf(tl, "%s", data)) != EOF) {
- if(!strcmp(data, "From:"))
- num++;
- }
-
- fclose(tl);
- }
-
- return num;
-}
-
-/* Returns time til next minute changes. Used to update the clock when
- needed. */
-
-int silc_client_time_til_next_min()
-{
- time_t curtime;
- struct tm *min;
-
- curtime = time(0);
- min = localtime(&curtime);
-
- return 60 - min->tm_sec;
-}
-
-/* Asks yes/no from user on the input line. Returns TRUE on "yes" and
- FALSE on "no". */
-
-int silc_client_ask_yes_no(SilcClient client, char *prompt)
-{
- SilcClientInternal app = (SilcClientInternal)client->application;
- char answer[4];
- int ret;
-
- again:
- silc_screen_input_reset(app->screen);
-
- /* Print prompt */
- wattroff(app->screen->input_win, A_INVIS);
- silc_screen_input_print_prompt(app->screen, prompt);
-
- /* Get string */
- memset(answer, 0, sizeof(answer));
- echo();
- wgetnstr(app->screen->input_win, answer, sizeof(answer));
- if (!strncasecmp(answer, "yes", strlen(answer)) ||
- !strncasecmp(answer, "y", strlen(answer))) {
- ret = TRUE;
- } else if (!strncasecmp(answer, "no", strlen(answer)) ||
- !strncasecmp(answer, "n", strlen(answer))) {
- ret = FALSE;
- } else {
- silc_say(client, app->conn, "Type yes or no");
- goto again;
- }
- noecho();
-
- silc_screen_input_reset(app->screen);
-
- return ret;
-}
-
-/* Lists supported (builtin) ciphers */
-
-void silc_client_list_ciphers()
-{
- char *ciphers = silc_cipher_get_supported();
- fprintf(stdout, "%s\n", ciphers);
- silc_free(ciphers);
-}
-
-/* Lists supported (builtin) hash functions */
-
-void silc_client_list_hash_funcs()
-{
- char *hash = silc_hash_get_supported();
- fprintf(stdout, "%s\n", hash);
- silc_free(hash);
-}
-
-/* Lists supported PKCS algorithms */
-
-void silc_client_list_pkcs()
-{
- char *pkcs = silc_pkcs_get_supported();
- fprintf(stdout, "%s\n", pkcs);
- silc_free(pkcs);
-}
-
-/* Displays input prompt on command line and takes input data from user */
-
-char *silc_client_get_input(const char *prompt)
-{
- char input[2048];
- int fd;
-
- fd = open("/dev/tty", O_RDONLY);
- if (fd < 0) {
- fprintf(stderr, "silc: %s\n", strerror(errno));
- return NULL;
- }
-
- memset(input, 0, sizeof(input));
-
- printf("%s", prompt);
- fflush(stdout);
-
- if ((read(fd, input, sizeof(input))) < 0) {
- fprintf(stderr, "silc: %s\n", strerror(errno));
- return NULL;
- }
-
- if (strlen(input) <= 1)
- return NULL;
-
- if (strchr(input, '\n'))
- *strchr(input, '\n') = '\0';
-
- return strdup(input);
-}
-
-/* Displays prompt on command line and takes passphrase with echo
- off from user. */
-
-char *silc_client_get_passphrase(const char *prompt)
-{
-#if 0
- char input[2048];
- char *ret;
- int fd;
- struct termios to;
- struct termios to_old;
-
- fd = open("/dev/tty", O_RDONLY);
- if (fd < 0) {
- fprintf(stderr, "silc: %s\n", strerror(errno));
- return NULL;
- }
-
- signal(SIGINT, SIG_IGN);
-
- /* Get terminal info */
- tcgetattr(fd, &to);
- to_old = to;
-
- /* Echo OFF */
- to.c_lflag &= ~(ECHO | ECHOE | ECHOK | ECHONL);
- tcsetattr(fd, TCSANOW, &to);
-
- memset(input, 0, sizeof(input));
-
- printf("%s", prompt);
- fflush(stdout);
-
- if ((read(fd, input, sizeof(input))) < 0) {
- fprintf(stderr, "silc: %s\n", strerror(errno));
- return NULL;
- }
-
- if (strlen(input) <= 1) {
- tcsetattr(fd, TCSANOW, &to_old);
- return NULL;
- }
-
- if (strchr(input, '\n'))
- *strchr(input, '\n') = '\0';
-
- /* Restore old terminfo */
- tcsetattr(fd, TCSANOW, &to_old);
- signal(SIGINT, SIG_DFL);
-
- ret = silc_calloc(strlen(input), sizeof(char));
- memcpy(ret, input, strlen(input));
- memset(input, 0, sizeof(input));
- return ret;
-#else
- return NULL;
-#endif
-}
-
-/* Returns identifier string for public key generation. */
-
-char *silc_client_create_identifier()
-{
- char *username = NULL, *realname = NULL;
- char hostname[256], email[256];
-
- /* Get realname */
- realname = silc_get_real_name();
-
- /* Get hostname */
- memset(hostname, 0, sizeof(hostname));
- gethostname(hostname, sizeof(hostname));
-
- /* Get username (mandatory) */
- username = silc_get_username();
- if (!username)
- return NULL;
-
- /* Create default email address, whether it is right or not */
- snprintf(email, sizeof(email), "%s@%s", username, hostname);
-
- return silc_pkcs_encode_identifier(username, hostname, realname, email,
- NULL, NULL);
-}
-
-/* Creates new public key and private key pair. This is used only
- when user wants to create new key pair from command line. */
-
-int silc_client_create_key_pair(char *pkcs_name, int bits,
- char *public_key, char *private_key,
- char *identifier,
- SilcPublicKey *ret_pub_key,
- SilcPrivateKey *ret_prv_key)
-{
- SilcPKCS pkcs;
- SilcPublicKey pub_key;
- SilcPrivateKey prv_key;
- SilcRng rng;
- unsigned char *key;
- SilcUInt32 key_len;
- char line[256];
- char *pkfile = NULL, *prvfile = NULL;
-
- if (!pkcs_name || !public_key || !private_key)
- printf("\
-New pair of keys will be created. Please, answer to following questions.\n\
-");
-
- if (!pkcs_name) {
- again_name:
- pkcs_name =
- silc_client_get_input("PKCS name (l to list names) [rsa]: ");
- if (!pkcs_name)
- pkcs_name = strdup("rsa");
-
- if (*pkcs_name == 'l' || *pkcs_name == 'L') {
- silc_client_list_pkcs();
- silc_free(pkcs_name);
- goto again_name;
- }
- }
-
- if (!silc_pkcs_is_supported(pkcs_name)) {
- fprintf(stderr, "Unknown PKCS `%s'", pkcs_name);
- return FALSE;
- }
-
- if (!bits) {
- char *length = NULL;
- length =
- silc_client_get_input("Key length in bits [1024]: ");
- if (!length)
- bits = 1024;
- else
- bits = atoi(length);
- }
-
- if (!identifier) {
- char *def = silc_client_create_identifier();
-
- memset(line, 0, sizeof(line));
- if (def)
- snprintf(line, sizeof(line), "Identifier [%s]: ", def);
- else
- snprintf(line, sizeof(line),
- "Identifier (eg. UN=jon, HN=jon.dummy.com, "
- "RN=Jon Johnson, E=jon@dummy.com): ");
-
- while (!identifier) {
- identifier = silc_client_get_input(line);
- if (!identifier && def)
- identifier = strdup(def);
- }
-
- if (def)
- silc_free(def);
- }
-
- rng = silc_rng_alloc();
- silc_rng_init(rng);
- silc_rng_global_init(rng);
-
- if (!public_key) {
- memset(line, 0, sizeof(line));
- snprintf(line, sizeof(line), "Public key filename [%s] ",
- SILC_CLIENT_PUBLIC_KEY_NAME);
- pkfile = silc_client_get_input(line);
- if (!pkfile)
- pkfile = SILC_CLIENT_PUBLIC_KEY_NAME;
- } else {
- pkfile = public_key;
- }
-
- if (!private_key) {
- memset(line, 0, sizeof(line));
- snprintf(line, sizeof(line), "Public key filename [%s] ",
- SILC_CLIENT_PRIVATE_KEY_NAME);
- prvfile = silc_client_get_input(line);
- if (!prvfile)
- prvfile = SILC_CLIENT_PRIVATE_KEY_NAME;
- } else {
- prvfile = private_key;
- }
-
- /* Generate keys */
- silc_pkcs_alloc(pkcs_name, &pkcs);
- pkcs->pkcs->init(pkcs->context, bits, rng);
-
- /* Save public key into file */
- key = silc_pkcs_get_public_key(pkcs, &key_len);
- pub_key = silc_pkcs_public_key_alloc(pkcs->pkcs->name, identifier,
- key, key_len);
- silc_pkcs_save_public_key(pkfile, pub_key, SILC_PKCS_FILE_PEM);
- if (ret_pub_key)
- *ret_pub_key = pub_key;
-
- memset(key, 0, sizeof(key_len));
- silc_free(key);
-
- /* Save private key into file */
- key = silc_pkcs_get_private_key(pkcs, &key_len);
- prv_key = silc_pkcs_private_key_alloc(pkcs->pkcs->name, key, key_len);
-
- silc_pkcs_save_private_key(prvfile, prv_key, NULL, SILC_PKCS_FILE_BIN);
- if (ret_prv_key)
- *ret_prv_key = prv_key;
-
- printf("Public key has been saved into `%s'.\n", pkfile);
- printf("Private key has been saved into `%s'.\n", prvfile);
- printf("Press <Enter> to continue...\n");
- getchar();
-
- memset(key, 0, sizeof(key_len));
- silc_free(key);
-
- silc_rng_free(rng);
- silc_pkcs_free(pkcs);
-
- return TRUE;
-}
-
-/* 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 and that they aren't expired.
- If they doesn't exist or they are expired, they will be (re)created
- after return. */
-
-int silc_client_check_silc_dir()
-{
- char filename[256], file_public_key[256], file_private_key[256];
- char servfilename[256], clientfilename[256];
- char *identifier;
- struct stat st;
- struct passwd *pw;
- int firstime = FALSE;
- time_t curtime, modtime;
-
- SILC_LOG_DEBUG(("Checking ~./silc directory"));
-
- memset(filename, 0, sizeof(filename));
- memset(file_public_key, 0, sizeof(file_public_key));
- memset(file_private_key, 0, sizeof(file_private_key));
-
- pw = getpwuid(getuid());
- if (!pw) {
- fprintf(stderr, "silc: %s\n", strerror(errno));
- return FALSE;
- }
-
- identifier = silc_client_create_identifier();
-
- /* We'll take home path from /etc/passwd file to be sure. */
- snprintf(filename, sizeof(filename) - 1, "%s/.silc/", pw->pw_dir);
- snprintf(servfilename, sizeof(servfilename) - 1, "%s/.silc/serverkeys",
- pw->pw_dir);
- snprintf(clientfilename, sizeof(clientfilename) - 1, "%s/.silc/clientkeys",
- pw->pw_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;
- }
-
- /* Directory was created. First time running SILC */
- firstime = TRUE;
- } 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 {
-
- /* 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;
- }
-
- /* 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;
- }
- }
- }
-
- /*
- * 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;
- }
- }
-
- /*
- * 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 running SILC first time */
- if (firstime) {
- fprintf(stdout, "Running SILC for the first time\n");
- silc_client_create_key_pair(SILC_CLIENT_DEF_PKCS,
- SILC_CLIENT_DEF_PKCS_LEN,
- file_public_key, file_private_key,
- identifier, NULL, NULL);
- return TRUE;
- }
-
- if ((stat(file_public_key, &st)) == -1) {
- /* If file doesn't exist */
- if (errno == ENOENT) {
- fprintf(stdout, "Your public key doesn't exist\n");
- silc_client_create_key_pair(SILC_CLIENT_DEF_PKCS,
- SILC_CLIENT_DEF_PKCS_LEN,
- file_public_key,
- file_private_key, identifier, NULL, NULL);
- } else {
- fprintf(stderr, "%s\n", strerror(errno));
- return FALSE;
- }
- }
-
- 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_client_create_key_pair(SILC_CLIENT_DEF_PKCS,
- SILC_CLIENT_DEF_PKCS_LEN,
- file_public_key,
- file_private_key, identifier, NULL, NULL);
- } 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;
- }
-
- /* 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;
- }
-
- /* 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");
- }
-
- /* See if the key has expired. */
- modtime = st.st_mtime; /* last modified */
- curtime = time(0) - modtime;
-
- /* 86400 is seconds in a day. */
- if (curtime >= (86400 * SILC_CLIENT_KEY_EXPIRES)) {
- fprintf(stdout,
- "--------------------------------------------------\n"
- "Your private key has expired and needs to be\n"
- "recreated. This will be done automatically now.\n"
- "Your new key will expire in %d days from today.\n"
- "--------------------------------------------------\n",
- SILC_CLIENT_KEY_EXPIRES);
-
- silc_client_create_key_pair(SILC_CLIENT_DEF_PKCS,
- SILC_CLIENT_DEF_PKCS_LEN,
- file_public_key,
- file_private_key, identifier, NULL, NULL);
- }
-
- if (identifier)
- silc_free(identifier);
-
- return TRUE;
-}
-
-/* Loads public and private key from files. */
-
-int silc_client_load_keys(SilcClient client)
-{
- char filename[256];
- struct passwd *pw;
-
- SILC_LOG_DEBUG(("Loading public and private keys"));
-
- pw = getpwuid(getuid());
- if (!pw)
- return FALSE;
-
- memset(filename, 0, sizeof(filename));
- snprintf(filename, sizeof(filename) - 1, "%s/.silc/%s",
- pw->pw_dir, SILC_CLIENT_PRIVATE_KEY_NAME);
-
- if (silc_pkcs_load_private_key(filename, &client->private_key,
- SILC_PKCS_FILE_BIN) == FALSE)
- if (silc_pkcs_load_private_key(filename, &client->private_key,
- SILC_PKCS_FILE_PEM) == FALSE)
- return FALSE;
-
- memset(filename, 0, sizeof(filename));
- snprintf(filename, sizeof(filename) - 1, "%s/.silc/%s",
- pw->pw_dir, SILC_CLIENT_PUBLIC_KEY_NAME);
-
- if (silc_pkcs_load_public_key(filename, &client->public_key,
- SILC_PKCS_FILE_PEM) == FALSE)
- if (silc_pkcs_load_public_key(filename, &client->public_key,
- SILC_PKCS_FILE_BIN) == FALSE)
- return FALSE;
-
- return TRUE;
-}
-
-/* Dumps the public key on screen. Used from the command line option. */
-
-int silc_client_show_key(char *keyfile)
-{
- SilcPublicKey public_key;
- SilcPublicKeyIdentifier ident;
- char *fingerprint;
- unsigned char *pk;
- SilcUInt32 pk_len;
- SilcPKCS pkcs;
- int key_len = 0;
-
- if (silc_pkcs_load_public_key(keyfile, &public_key,
- SILC_PKCS_FILE_PEM) == FALSE)
- if (silc_pkcs_load_public_key(keyfile, &public_key,
- SILC_PKCS_FILE_BIN) == FALSE) {
- fprintf(stderr, "Could not load public key file `%s'\n", keyfile);
- return FALSE;
- }
-
- ident = silc_pkcs_decode_identifier(public_key->identifier);
-
- pk = silc_pkcs_public_key_encode(public_key, &pk_len);
- fingerprint = silc_hash_fingerprint(NULL, pk, pk_len);
-
- if (silc_pkcs_alloc(public_key->name, &pkcs)) {
- key_len = silc_pkcs_public_key_set(pkcs, public_key);
- silc_pkcs_free(pkcs);
- }
-
- printf("Public key file : %s\n", keyfile);
- printf("Algorithm : %s\n", public_key->name);
- if (key_len)
- printf("Key length (bits) : %d\n", key_len);
- if (ident->realname)
- printf("Real name : %s\n", ident->realname);
- if (ident->username)
- printf("Username : %s\n", ident->username);
- if (ident->host)
- printf("Hostname : %s\n", ident->host);
- if (ident->email)
- printf("Email : %s\n", ident->email);
- if (ident->org)
- printf("Organization : %s\n", ident->org);
- if (ident->country)
- printf("Country : %s\n", ident->country);
- printf("Fingerprint (SHA1) : %s\n", fingerprint);
-
- fflush(stdout);
-
- silc_free(fingerprint);
- silc_free(pk);
- silc_pkcs_public_key_free(public_key);
- silc_pkcs_free_identifier(ident);
-
- return TRUE;
-}
projects / runtime.git / blobdiff