SilcBool silc_client_attribute_del(SilcClient client,
SilcClientConnection conn,
SilcAttribute attribute,
SilcAttributePayload attr)
{
SilcBool ret;
if (!conn->internal->attrs)
return FALSE;
if (attr) {
attribute = silc_attribute_get_attribute(attr);
ret = silc_hash_table_del_by_context(conn->internal->attrs,
SILC_32_TO_PTR(attribute), attr);
} else if (attribute) {
silc_hash_table_find_foreach(conn->internal->attrs,
SILC_32_TO_PTR(attribute),
silc_client_attribute_del_foreach, conn);
ret = TRUE;
} else{
return FALSE;
}
if (ret)
if (!silc_hash_table_count(conn->internal->attrs)) {
silc_hash_table_free(conn->internal->attrs);
conn->internal->attrs = NULL;
}
return ret;
}
static void silc_client_attribute_del_foreach(void *key, void *context,
void *user_context)
{
SilcClientConnection conn = user_context;
SilcAttributePayload attr = context;
SilcAttribute attribute;
if (!attr)
return;
attribute = silc_attribute_get_attribute(attr);
silc_hash_table_del_by_context(conn->internal->attrs,
SILC_32_TO_PTR(attribute), attr);
}
SilcAttributePayload
silcpurple_get_attr(SilcDList attrs, SilcAttribute attribute)
{
SilcAttributePayload attr = NULL;
if (!attrs)
return NULL;
silc_dlist_start(attrs);
while ((attr = silc_dlist_get(attrs)) != SILC_LIST_END)
if (attribute == silc_attribute_get_attribute(attr))
break;
return attr;
}
static void
silcpurple_add_buddy_save(bool success, void *context)
{
SilcPurpleBuddyRes r = context;
PurpleBuddy *b = r->b;
SilcClient client = r->client;
SilcClientEntry client_entry;
SilcAttributePayload attr;
SilcAttribute attribute;
SilcVCardStruct vcard;
SilcAttributeObjMime message, extension;
#ifdef SILC_ATTRIBUTE_USER_ICON
SilcAttributeObjMime usericon;
#endif
SilcAttributeObjPk serverpk, usersign, serversign;
gboolean usign_success = TRUE, ssign_success = TRUE;
char filename[512], filename2[512], *fingerprint = NULL, *tmp;
SilcUInt32 len;
int i;
if (!success) {
/* The user did not trust the public key. */
silcpurple_add_buddy_pk_no(r);
silc_free(r);
return;
}
if (r->offline) {
/* User is offline. Associate the imported public key with
this user. */
fingerprint = silc_hash_fingerprint(NULL, r->offline_pk,
r->offline_pk_len);
for (i = 0; i < strlen(fingerprint); i++)
if (fingerprint[i] == ' ')
fingerprint[i] = '_';
g_snprintf(filename, sizeof(filename) - 1,
"%s" G_DIR_SEPARATOR_S "clientkeys" G_DIR_SEPARATOR_S "clientkey_%s.pub",
silcpurple_silcdir(), fingerprint);
purple_blist_node_set_string((PurpleBlistNode *)b, "public-key", filename);
purple_prpl_got_user_status(purple_buddy_get_account(r->b), purple_buddy_get_name(r->b), SILCPURPLE_STATUS_ID_OFFLINE, NULL);
silc_free(fingerprint);
silc_free(r->offline_pk);
silc_free(r);
return;
}
/* Get the client entry. */
client_entry = silc_client_get_client_by_id(r->client, r->conn,
&r->client_id);
if (!client_entry) {
silc_free(r);
return;
}
memset(&vcard, 0, sizeof(vcard));
memset(&message, 0, sizeof(message));
memset(&extension, 0, sizeof(extension));
#ifdef SILC_ATTRIBUTE_USER_ICON
memset(&usericon, 0, sizeof(usericon));
#endif
memset(&serverpk, 0, sizeof(serverpk));
memset(&usersign, 0, sizeof(usersign));
memset(&serversign, 0, sizeof(serversign));
/* Now that we have the public key and we trust it now we
save the attributes of the buddy and update its status. */
if (client_entry->attrs) {
silc_dlist_start(client_entry->attrs);
while ((attr = silc_dlist_get(client_entry->attrs))
!= SILC_LIST_END) {
attribute = silc_attribute_get_attribute(attr);
switch (attribute) {
case SILC_ATTRIBUTE_USER_INFO:
if (!silc_attribute_get_object(attr, (void *)&vcard,
sizeof(vcard)))
continue;
break;
case SILC_ATTRIBUTE_STATUS_MESSAGE:
if (!silc_attribute_get_object(attr, (void *)&message,
sizeof(message)))
continue;
break;
case SILC_ATTRIBUTE_EXTENSION:
if (!silc_attribute_get_object(attr, (void *)&extension,
sizeof(extension)))
continue;
break;
#ifdef SILC_ATTRIBUTE_USER_ICON
case SILC_ATTRIBUTE_USER_ICON:
if (!silc_attribute_get_object(attr, (void *)&usericon,
sizeof(usericon)))
continue;
break;
#endif
case SILC_ATTRIBUTE_SERVER_PUBLIC_KEY:
if (serverpk.type)
continue;
if (!silc_attribute_get_object(attr, (void *)&serverpk,
sizeof(serverpk)))
continue;
break;
case SILC_ATTRIBUTE_USER_DIGITAL_SIGNATURE:
if (usersign.data)
continue;
if (!silc_attribute_get_object(attr, (void *)&usersign,
sizeof(usersign)))
continue;
break;
case SILC_ATTRIBUTE_SERVER_DIGITAL_SIGNATURE:
if (serversign.data)
continue;
if (!silc_attribute_get_object(attr, (void *)&serversign,
sizeof(serversign)))
continue;
break;
default:
break;
}
}
}
/* Verify the attribute signatures */
if (usersign.data) {
SilcPKCS pkcs;
unsigned char *verifyd;
SilcUInt32 verify_len;
silc_pkcs_alloc((unsigned char*)"rsa", &pkcs);
verifyd = silc_attribute_get_verify_data(client_entry->attrs,
FALSE, &verify_len);
if (verifyd && silc_pkcs_public_key_set(pkcs, client_entry->public_key)){
if (!silc_pkcs_verify_with_hash(pkcs, client->sha1hash,
usersign.data,
usersign.data_len,
verifyd, verify_len))
usign_success = FALSE;
}
silc_free(verifyd);
}
if (serversign.data && purple_strequal(serverpk.type, "silc-rsa")) {
SilcPublicKey public_key;
SilcPKCS pkcs;
unsigned char *verifyd;
SilcUInt32 verify_len;
if (silc_pkcs_public_key_decode(serverpk.data, serverpk.data_len,
&public_key)) {
silc_pkcs_alloc((unsigned char *)"rsa", &pkcs);
verifyd = silc_attribute_get_verify_data(client_entry->attrs,
TRUE, &verify_len);
if (verifyd && silc_pkcs_public_key_set(pkcs, public_key)) {
if (!silc_pkcs_verify_with_hash(pkcs, client->sha1hash,
serversign.data,
serversign.data_len,
verifyd, verify_len))
ssign_success = FALSE;
}
silc_pkcs_public_key_free(public_key);
silc_free(verifyd);
}
}
fingerprint = silc_fingerprint(client_entry->fingerprint,
client_entry->fingerprint_len);
for (i = 0; i < strlen(fingerprint); i++)
if (fingerprint[i] == ' ')
fingerprint[i] = '_';
if (usign_success || ssign_success) {
struct passwd *pw;
struct stat st;
memset(filename2, 0, sizeof(filename2));
/* Filename for dir */
tmp = fingerprint + strlen(fingerprint) - 9;
g_snprintf(filename, sizeof(filename) - 1,
"%s" G_DIR_SEPARATOR_S "friends" G_DIR_SEPARATOR_S "%s",
silcpurple_silcdir(), tmp);
pw = getpwuid(getuid());
if (!pw)
return;
/* Create dir if it doesn't exist */
if ((g_stat(filename, &st)) == -1) {
if (errno == ENOENT) {
if (pw->pw_uid == geteuid()) {
int ret = g_mkdir(filename, 0755);
if (ret < 0)
return;
}
}
}
/* Save VCard */
g_snprintf(filename2, sizeof(filename2) - 1,
"%s" G_DIR_SEPARATOR_S "vcard", filename);
if (vcard.full_name) {
tmp = (char *)silc_vcard_encode(&vcard, &len);
silc_file_writefile(filename2, tmp, len);
silc_free(tmp);
}
/* Save status message */
if (message.mime) {
memset(filename2, 0, sizeof(filename2));
g_snprintf(filename2, sizeof(filename2) - 1,
"%s" G_DIR_SEPARATOR_S "status_message.mime",
filename);
silc_file_writefile(filename2, (char *)message.mime,
message.mime_len);
}
/* Save extension data */
if (extension.mime) {
memset(filename2, 0, sizeof(filename2));
g_snprintf(filename2, sizeof(filename2) - 1,
"%s" G_DIR_SEPARATOR_S "extension.mime",
filename);
silc_file_writefile(filename2, (char *)extension.mime,
extension.mime_len);
}
#ifdef SILC_ATTRIBUTE_USER_ICON
/* Save user icon */
if (usericon.mime) {
SilcMime m = silc_mime_decode(usericon.mime,
usericon.mime_len);
if (m) {
const char *type = silc_mime_get_field(m, "Content-Type");
if (purple_strequal(type, "image/jpeg") ||
purple_strequal(type, "image/gif") ||
purple_strequal(type, "image/bmp") ||
purple_strequal(type, "image/png")) {
const unsigned char *data;
SilcUInt32 data_len;
data = silc_mime_get_data(m, &data_len);
if (data) {
/* TODO: Check if SILC gives us something to use as the checksum instead */
purple_buddy_icons_set_for_user(purple_buddy_get_account(r->b), purple_buddy_get_name(r->b), g_memdup(data, data_len), data_len, NULL);
}
}
silc_mime_free(m);
}
}
#endif
}
/* Save the public key path to buddy properties, as it is used
to identify the buddy in the network (and not the nickname). */
memset(filename, 0, sizeof(filename));
g_snprintf(filename, sizeof(filename) - 1,
"%s" G_DIR_SEPARATOR_S "clientkeys" G_DIR_SEPARATOR_S "clientkey_%s.pub",
silcpurple_silcdir(), fingerprint);
purple_blist_node_set_string((PurpleBlistNode *)b, "public-key", filename);
/* Update online status */
purple_prpl_got_user_status(purple_buddy_get_account(r->b), purple_buddy_get_name(r->b), SILCPURPLE_STATUS_ID_AVAILABLE, NULL);
/* Finally, start watching this user so we receive its status
changes from the server */
g_snprintf(filename2, sizeof(filename2) - 1, "+%s", filename);
silc_client_command_call(r->client, r->conn, NULL, "WATCH", "-pubkey",
filename2, NULL);
silc_free(fingerprint);
silc_free(r);
}
SilcBuffer silc_client_attributes_process(SilcClient client,
SilcClientConnection conn,
SilcDList attrs)
{
SilcBuffer buffer = NULL;
SilcAttrForeach f;
SilcAttribute attribute;
SilcAttributePayload attr;
SilcAttributeObjPk pk;
unsigned char sign[2048 + 1];
SilcUInt32 sign_len;
SILC_LOG_DEBUG(("Process Requested Attributes"));
/* If nothing is set by application assume that we don't want to use
attributes, ignore the request. */
if (!conn->internal->attrs) {
SILC_LOG_DEBUG(("User has not set any attributes"));
return NULL;
}
/* Always put our public key. */
pk.type = "silc-rsa";
pk.data = silc_pkcs_public_key_encode(conn->public_key, &pk.data_len);
buffer = silc_attribute_payload_encode(buffer,
SILC_ATTRIBUTE_USER_PUBLIC_KEY,
pk.data ? SILC_ATTRIBUTE_FLAG_VALID :
SILC_ATTRIBUTE_FLAG_INVALID,
&pk, sizeof(pk));
silc_free(pk.data);
/* Go through all requested attributes */
f.buffer = buffer;
silc_dlist_start(attrs);
while ((attr = silc_dlist_get(attrs)) != SILC_LIST_END) {
/* Put all attributes of this type */
attribute = silc_attribute_get_attribute(attr);
/* Ignore signature since we will compute it later */
if (attribute == SILC_ATTRIBUTE_USER_DIGITAL_SIGNATURE)
continue;
silc_hash_table_find_foreach(conn->internal->attrs,
SILC_32_TO_PTR(attribute),
silc_client_attributes_process_foreach,
&f);
}
buffer = f.buffer;
/* Finally compute the digital signature of all the data we provided. */
if (silc_pkcs_sign(conn->private_key, silc_buffer_data(buffer),
silc_buffer_len(buffer), sign, sizeof(sign), &sign_len,
TRUE, conn->internal->sha1hash)) {
pk.type = NULL;
pk.data = sign;
pk.data_len = sign_len;
buffer =
silc_attribute_payload_encode(buffer,
SILC_ATTRIBUTE_USER_DIGITAL_SIGNATURE,
SILC_ATTRIBUTE_FLAG_VALID,
&pk, sizeof(pk));
}
return buffer;
}
static char
silc_server_command_reply_whois_save(SilcServerCommandReplyContext cmd)
{
SilcServer server = cmd->server;
unsigned char *id_data, *umodes;
char *nickname, *username, *realname, *tmp;
unsigned char *fingerprint;
SilcID id;
SilcClientEntry client;
char global = FALSE;
char nick[128 + 1], servername[256 + 1], uname[128 + 1];
SilcUInt32 mode = 0, len, len2, id_len, flen;
const char *hostname, *ip;
silc_socket_stream_get_info(silc_packet_stream_get_stream(cmd->sock),
NULL, &hostname, &ip, NULL);
id_data = silc_argument_get_arg_type(cmd->args, 2, &id_len);
nickname = silc_argument_get_arg_type(cmd->args, 3, &len);
username = silc_argument_get_arg_type(cmd->args, 4, &len);
realname = silc_argument_get_arg_type(cmd->args, 5, &len);
if (!id_data || !nickname || !username || !realname)
return FALSE;
tmp = silc_argument_get_arg_type(cmd->args, 7, &len);
if (tmp)
SILC_GET32_MSB(mode, tmp);
if (!silc_id_payload_parse_id(id_data, id_len, &id))
return FALSE;
fingerprint = silc_argument_get_arg_type(cmd->args, 9, &flen);
/* Check if we have this client cached already. */
client = silc_idlist_find_client_by_id(server->local_list,
SILC_ID_GET_ID(id),
FALSE, NULL);
if (!client) {
client = silc_idlist_find_client_by_id(server->global_list,
SILC_ID_GET_ID(id),
FALSE, NULL);
global = TRUE;
}
if (!client) {
/* If router did not find such Client ID in its lists then this must
be bogus client or some router in the net is buggy. */
if (server->server_type != SILC_SERVER)
return FALSE;
/* Take hostname out of nick string if it includes it. */
silc_parse_userfqdn(nickname, nick, sizeof(nick), servername,
sizeof(servername));
/* We don't have that client anywhere, add it. The client is added
to global list since server didn't have it in the lists so it must be
global. This will check for valid nickname and username strings. */
client = silc_idlist_add_client(server->global_list,
strdup(nick), username,
strdup(realname),
silc_id_dup(SILC_ID_GET_ID(id),
SILC_ID_CLIENT),
silc_packet_get_context(cmd->sock),
NULL);
if (!client) {
SILC_LOG_ERROR(("Could not add new client to the ID Cache"));
return FALSE;
}
client->data.status |=
(SILC_IDLIST_STATUS_REGISTERED | SILC_IDLIST_STATUS_RESOLVED);
client->data.status &= ~SILC_IDLIST_STATUS_RESOLVING;
client->mode = mode;
client->servername = servername[0] ? strdup(servername) : NULL;
SILC_LOG_DEBUG(("stat.clients %d->%d", server->stat.clients,
server->stat.clients + 1));
server->stat.clients++;
} else {
/* We have the client already, update the data */
SILC_LOG_DEBUG(("Updating client data"));
/* Check nickname */
silc_parse_userfqdn(nickname, nick, sizeof(nick), servername,
sizeof(servername));
nickname = silc_identifier_check(nick, strlen(nick), SILC_STRING_UTF8,
128, NULL);
if (!nickname) {
SILC_LOG_ERROR(("Malformed nickname '%s' received in WHOIS reply "
"from %s",
hostname ? hostname : "", nick));
return FALSE;
}
/* Check username */
silc_parse_userfqdn(username, uname, sizeof(uname), NULL, 0);
if (!silc_identifier_verify(uname, strlen(uname), SILC_STRING_UTF8, 128)) {
SILC_LOG_ERROR(("Malformed username '%s' received in WHOIS reply "
"from %s",
hostname ? hostname : "", tmp));
return FALSE;
}
/* Update entry */
silc_idcache_update_by_context(global ? server->global_list->clients :
server->local_list->clients, client, NULL,
nickname, TRUE);
silc_free(client->nickname);
silc_free(client->username);
silc_free(client->userinfo);
silc_free(client->servername);
client->nickname = strdup(nick);
client->username = strdup(username);
client->userinfo = strdup(realname);
client->servername = servername[0] ? strdup(servername) : NULL;
client->mode = mode;
client->data.status |= SILC_IDLIST_STATUS_RESOLVED;
client->data.status &= ~SILC_IDLIST_STATUS_RESOLVING;
}
/* Save channel list if it was sent to us */
if (server->server_type == SILC_SERVER) {
tmp = silc_argument_get_arg_type(cmd->args, 6, &len);
umodes = silc_argument_get_arg_type(cmd->args, 10, &len2);
if (tmp && umodes) {
SilcBufferStruct channels_buf, umodes_buf;
silc_buffer_set(&channels_buf, tmp, len);
silc_buffer_set(&umodes_buf, umodes, len2);
silc_server_save_user_channels(server, cmd->sock, client, &channels_buf,
&umodes_buf);
} else {
silc_server_save_user_channels(server, cmd->sock, client, NULL, NULL);
}
}
if (fingerprint && flen == sizeof(client->data.fingerprint))
memcpy(client->data.fingerprint, fingerprint, flen);
/* Take Requested Attributes if set. */
tmp = silc_argument_get_arg_type(cmd->args, 11, &len);
if (tmp) {
silc_free(client->attrs);
client->attrs = silc_memdup(tmp, len);
client->attrs_len = len;
/* Try to take public key from attributes if present and we don't have
the key already. Do this only on normal server. Routers do GETKEY
for all clients anyway. */
if (server->server_type != SILC_ROUTER && !client->data.public_key) {
SilcAttributePayload attr;
SilcAttributeObjPk pk;
unsigned char f[SILC_HASH_MAXLEN];
SilcDList attrs = silc_attribute_payload_parse(tmp, len);
SILC_LOG_DEBUG(("Take client public key from attributes"));
if (attrs) {
silc_dlist_start(attrs);
while ((attr = silc_dlist_get(attrs)) != SILC_LIST_END) {
if (silc_attribute_get_attribute(attr) ==
SILC_ATTRIBUTE_USER_PUBLIC_KEY) {
if (!silc_attribute_get_object(attr, &pk, sizeof(pk)))
continue;
/* Take only SILC public keys */
if (strcmp(pk.type, "silc-rsa")) {
silc_free(pk.type);
silc_free(pk.data);
continue;
}
/* Verify that the server provided fingerprint matches the key */
silc_hash_make(server->sha1hash, pk.data, pk.data_len, f);
if (memcmp(f, client->data.fingerprint, sizeof(f))) {
silc_free(pk.type);
silc_free(pk.data);
continue;
}
/* Save the public key. */
if (!silc_pkcs_public_key_alloc(SILC_PKCS_SILC,
pk.data, pk.data_len,
&client->data.public_key)) {
silc_free(pk.type);
silc_free(pk.data);
continue;
}
SILC_LOG_DEBUG(("Saved client public key from attributes"));
/* Add client's public key to repository */
if (!silc_server_get_public_key_by_client(server, client, NULL))
silc_skr_add_public_key_simple(server->repository,
client->data.public_key,
SILC_SKR_USAGE_IDENTIFICATION,
client, NULL);
silc_free(pk.type);
silc_free(pk.data);
break;
}
}
silc_attribute_payload_list_free(attrs);
}
}
}
return TRUE;
}
