degesch: thorough review, no functional changes
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bf6d507bb2
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81
degesch.c
81
degesch.c
@ -1,7 +1,7 @@
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/*
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* degesch.c: the experimental IRC client
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*
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* Copyright (c) 2015 - 2017, Přemysl Janouch <p.janouch@gmail.com>
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* Copyright (c) 2015 - 2018, Přemysl Janouch <p.janouch@gmail.com>
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*
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* Permission to use, copy, modify, and/or distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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@ -2042,7 +2042,6 @@ struct app_context
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struct buffer *current_buffer; ///< The current buffer
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struct buffer *last_buffer; ///< Last used buffer
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// TODO: make buffer names fully unique like weechat does
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struct str_map buffers_by_name; ///< Buffers by name
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unsigned backlog_limit; ///< Limit for buffer lines
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@ -2096,6 +2095,7 @@ filter_color_cube_for_acceptable_nick_colors (size_t *len)
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size_t len_counter = 0;
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for (int x = 0; x < 6 * 6 * 6; x++)
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{
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// FIXME this isn't exactly right, the values aren't linear
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int r = x / 36;
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int g = (x / 6) % 6;
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int b = (x % 6);
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@ -3122,6 +3122,8 @@ static const int g_mirc_to_terminal[] =
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[MIRC_L_GRAY] = COLOR_256 (WHITE, 252),
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};
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// TODO: support more colors, see https://modern.ircdocs.horse/formatting.html
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// + http://anti.teamidiot.de/static/nei/*/extended_mirc_color_proposal.html
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static const char *
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formatter_parse_mirc_color (struct formatter *self, const char *s)
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{
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@ -3778,7 +3780,7 @@ static void
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buffer_line_write_time (struct formatter *f, struct buffer_line *line,
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FILE *stream, int flush_opts)
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{
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// Normal timestamps don't include the date, this way the user won't be
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// Normal timestamps don't include the date, make sure the user won't be
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// confused as to when an event has happened
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buffer_update_time (f->ctx, line->when, stream, flush_opts);
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@ -4003,7 +4005,6 @@ buffer_get_log_path (struct buffer *buffer)
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(void) mkdir_with_parents (path.str, NULL);
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// TODO: make sure global and server buffers don't collide with filenames
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str_append_c (&path, '/');
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make_log_filename (buffer->name, &path);
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str_append (&path, ".log");
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@ -4016,6 +4017,7 @@ buffer_open_log_file (struct app_context *ctx, struct buffer *buffer)
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if (!ctx->logging || buffer->log_file)
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return;
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// TODO: should we try to reopen files wrt. case mapping?
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char *path = buffer_get_log_path (buffer);
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if (!(buffer->log_file = fopen (path, "ab")))
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log_global_error (ctx, "Couldn't open log file `#s': #l",
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@ -4064,7 +4066,8 @@ buffer_add (struct app_context *ctx, struct buffer *buffer)
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buffer_open_log_file (ctx, buffer);
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// In theory this can't cause changes in the prompt
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// Normally this doesn't cause changes in the prompt but a prompt hook
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// could decide to show some information for all buffers nonetheless
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refresh_prompt (ctx);
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}
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@ -4140,7 +4143,7 @@ buffer_print_backlog (struct app_context *ctx, struct buffer *buffer)
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free (buffer_name_localized);
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}
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// That is, minus the readline prompt
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// That is, minus the readline prompt (taking at least one line)
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int display_limit = MAX (10, g_terminal.lines - 1);
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int to_display = 0;
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@ -4176,6 +4179,9 @@ buffer_activate (struct app_context *ctx, struct buffer *buffer)
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{
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if (ctx->current_buffer == buffer)
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return;
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// This is the only place where the unread messages marker
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// and highlight indicator are reset
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if (ctx->current_buffer)
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{
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ctx->current_buffer->new_messages_count = 0;
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@ -5025,6 +5031,7 @@ irc_process_hooks (struct server *s, char *input)
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return NULL;
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}
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// The old input may get freed, so we compare against a hash of it
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uint64_t new_hash = siphash_wrapper (input, strlen (input));
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if (new_hash != hash)
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log_server_debug (s, "#a>= \"#S\"#r", ATTR_JOIN, input);
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@ -5067,7 +5074,9 @@ irc_try_read (struct server *s)
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enum socket_io_result result = s->transport->try_read (s);
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if (s->read_buffer.len >= (1 << 20))
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{
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// XXX: this is stupid; if anything, count it in dependence of time
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// XXX: this is stupid; if anything, count it in dependence of time;
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// we could make transport_tls_try_read() limit the immediate amount
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// of data read like socket_io_try_read() does and remove this check
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log_server_error (s, s->buffer,
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"The IRC server seems to spew out data frantically");
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return SOCKET_IO_ERROR;
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@ -5302,7 +5311,7 @@ transport_tls_init_ctx (struct server *s, SSL_CTX *ssl_ctx, struct error **e)
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return false;
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}
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// Only inform the user if we're not actually verifying
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// Just inform the user if we're not actually verifying
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log_server_error (s, s->buffer, "#s", error->message);
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error_free (error);
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}
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@ -5363,7 +5372,7 @@ transport_tls_init (struct server *s, const char *hostname, struct error **e)
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// Enable SNI, FWIW; literal IP addresses aren't allowed
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struct in6_addr dummy;
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if (!inet_pton (AF_INET, hostname, &dummy)
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if (!inet_pton (AF_INET, hostname, &dummy)
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&& !inet_pton (AF_INET6, hostname, &dummy))
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SSL_set_tlsext_host_name (ssl, hostname);
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@ -6035,7 +6044,7 @@ irc_is_highlight (struct server *s, const char *message)
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// Special characters allowed in nicknames by RFC 2812: []\`_^{|} and -
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// Also excluded from the ASCII: common user channel prefixes: +%@&~
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// XXX: why did I exclude those? It won't match when newbies use them.
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// XXX: why did I exclude those? It won't match when IRC newbies use them.
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const char *delimiters = ",.;:!?()<>/=#$* \t\r\n\v\f\"'";
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bool result = false;
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@ -6329,6 +6338,7 @@ irc_handle_sent_privmsg (struct server *s, const struct irc_message *msg)
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return;
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// This ignores empty messages which we should not normally send
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// and the server is likely going to reject with an error reply anyway
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struct ctcp_chunk *chunks = ctcp_parse (msg->params.vector[1]);
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LIST_FOR_EACH (struct ctcp_chunk, iter, chunks)
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{
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@ -6367,6 +6377,7 @@ static void
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irc_process_sent_message (const struct irc_message *msg, struct server *s)
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{
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// The server is free to reject even a matching prefix
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// XXX: even though no prefix should normally be present, this is racy
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if (msg->prefix && !irc_is_this_us (s, msg->prefix))
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return;
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@ -7135,6 +7146,10 @@ irc_on_registered (struct server *s, const char *nickname)
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refresh_prompt (s->ctx);
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// XXX: we can also use WHOIS if it's not supported (optional by RFC 2812)
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// TODO: maybe rather always use RPL_ISUPPORT NICKLEN & USERLEN & HOSTLEN
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// since we don't seem to follow any subsequent changes in userhost;
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// unrealircd sends RPL_HOSTHIDDEN (396), which has an optional user part,
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// and there is also CAP CHGHOST which /may/ send it to ourselves
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irc_send (s, "USERHOST %s", s->irc_user->nickname);
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// A little hack that reinstates auto-away status when we get disconnected
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@ -7225,7 +7240,7 @@ irc_handle_rpl_namreply (struct server *s, const struct irc_message *msg)
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struct channel_user_sort_entry
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{
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struct server *s; ///< Server
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struct server *s; ///< Server (because of the qsort API)
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struct channel_user *channel_user; ///< Channel user
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};
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@ -8182,7 +8197,10 @@ server_rename (struct app_context *ctx, struct server *s, const char *new_name)
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struct buffer *buffer;
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while ((buffer = str_map_iter_next (&iter)))
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{
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// FIXME: creation of buffer names should be centralized
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// TODO: creation of buffer names should be centralized -> replace
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// calls to buffer_rename() and manual setting of buffer names
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// with something like buffer_autorename() -- just mind the mess
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// in irc_handle_nick(), which can hopefully be simplified
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char *x = NULL;
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switch (buffer->type)
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{
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@ -8387,6 +8405,7 @@ lua_plugin_log_error
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error_free (error);
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}
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/// Pop "n" values from the stack into a table, using their indexes as keys
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static void
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lua_plugin_pack (lua_State *L, int n)
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{
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@ -8541,7 +8560,7 @@ LUA_WEAK_DECLARE (channel, XLUA_CHANNEL_METATABLE)
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LUA_WEAK_DECLARE (buffer, XLUA_BUFFER_METATABLE)
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LUA_WEAK_DECLARE (server, XLUA_SERVER_METATABLE)
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// The global context is kind of fake and don't have any ref-counting,
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// The global context is kind of fake and doesn't have any ref-counting,
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// however it's still very much an object
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static struct lua_weak_info lua_ctx_info =
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{
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@ -9332,8 +9351,13 @@ lua_connection_close (lua_State *L)
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if (self->socket_fd != -1)
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{
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self->closing = true;
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// NOTE: this seems to do nothing on Linux
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(void) shutdown (self->socket_fd, SHUT_RD);
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// Right now we want to wait until all data is flushed to the socket
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// and can't call close() here immediately -- a rewrite to use async
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// would enable the user to await on either :send() or :flush();
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// a successful send() doesn't necessarily mean anything though
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if (!self->write_buffer.len)
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lua_connection_discard (self);
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}
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@ -9413,6 +9437,8 @@ static bool
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lua_connection_invoke_on_error (struct lua_connection *self,
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const char *error, struct error **e)
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{
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// XXX: not sure if ignoring errors after :close() is always desired;
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// code might want to make sure that data are transferred successfully
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if (!self->closing
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&& lua_connection_cb_lookup (self, "on_error", e)
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&& !lua_connection_eat_nil (self))
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@ -9791,8 +9817,13 @@ lua_wait_dial_check (struct lua_wait_channel *wchannel)
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lua_State *L = self->super.task->thread;
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if (self->connection)
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{
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// FIXME: this way the connection can leak, it shouldn't stay in cache
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// automatically all the time but clean itself up on GC
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// FIXME: this way the connection may leak -- we pass the value to the
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// task manager on the stack and forget about it but still leave the
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// connection in the cache. That is because right now, when Lua code
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// sets up callbacks in the connection object and returns, it might
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// get otherwise GC'd since nothing else keeps referencing it.
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// By rewriting lua_connection using async, tasks and wait channels
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// would hold a reference, allowing us to remove it from the cache.
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lua_cache_get (L, self->connection);
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lua_pushstring (L, self->hostname);
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self->connection = NULL;
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@ -10040,7 +10071,7 @@ lua_plugin_push_struct (lua_State *L, struct lua_plugin *self,
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{
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if (type == ISPECT_STR)
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{
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struct str *s = value;
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const struct str *s = value;
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lua_pushlstring (L, s->str, s->len);
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return;
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}
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@ -10194,7 +10225,8 @@ lua_plugin_reg_meta (lua_State *L, const char *name, luaL_Reg *fns)
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static void
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lua_plugin_reg_weak (lua_State *L, struct lua_weak_info *info, luaL_Reg *fns)
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{
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// Create a mapping from the object type back to our metadata
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// Create a mapping from the object type (info->ispect) back to metadata
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// so that we can figure out what to create from ISPECT_REF fields
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lua_pushlightuserdata (L, info);
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lua_rawsetp (L, LUA_REGISTRYINDEX, info->ispect);
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@ -10359,7 +10391,8 @@ plugin_load (struct app_context *ctx, const char *name)
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struct plugin *plugin = plugin_load_by_name (ctx, name, &e);
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if (plugin)
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{
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// FIXME: this way the real name isn't available to the plugin on load
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// FIXME: this way the real name isn't available to the plugin on load,
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// which has effect on e.g. plugin_config_name()
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free (plugin->name);
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plugin->name = xstrdup (name);
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@ -10464,6 +10497,7 @@ static char *
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maybe_cut_word_from_end (char **s, word_validator_fn validator, void *user_data)
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{
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// Find the start and end of the last word
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// Contrary to maybe_cut_word(), we ignore all whitespace at the end
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char *start = *s, *end = start + strlen (start);
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while (end > start && strchr (WORD_BREAKING_CHARS, end [-1]))
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end--;
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@ -11149,7 +11183,9 @@ static bool
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handle_command_topic (struct handler_args *a)
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{
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if (*a->arguments)
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// FIXME: there's no way to unset the topic
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// FIXME: there's no way to start the topic with whitespace
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// FIXME: there's no way to unset the topic;
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// we could adopt the Tcl style of "-switches" with "--" sentinels
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irc_send (a->s, "TOPIC %s :%s", a->channel_name, a->arguments);
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else
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irc_send (a->s, "TOPIC %s", a->channel_name);
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@ -11228,6 +11264,7 @@ mass_channel_mode_mask_list
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for (size_t i = 0; i < v.len; i++)
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{
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char *target = v.vector[i];
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// TODO: support EXTBAN and leave those alone, too
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if (strpbrk (target, "!@*?"))
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continue;
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@ -11768,6 +11805,7 @@ handle_command_help (struct handler_args *a)
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if (!*a->arguments)
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return show_command_list (ctx);
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// TODO: we should probably also accept commands names with a leading slash
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char *command = cut_word (&a->arguments);
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for (size_t i = 0; i < N_ELEMENTS (g_command_handlers); i++)
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{
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@ -12963,7 +13001,9 @@ on_readline_input (char *line)
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add_history (line);
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// readline always erases the input line after returning from here,
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// but we don't want that in order to allow correct buffer switching
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// but we don't want that to happen if the command to be executed
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// would switch the buffer (we'd keep the already executed command in
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// the old buffer and delete any input restored from the new buffer)
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strv_append_owned (&ctx->pending_input, line);
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poller_idle_set (&ctx->input_event);
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}
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@ -13450,6 +13490,7 @@ process_mirc_escape (const struct pollfd *fd, struct app_context *ctx)
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goto error;
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buf->str[++buf->len] = '\0';
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// XXX: I think this should be global and shared with Readline/libedit
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mbstate_t state;
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memset (&state, 0, sizeof state);
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