Add a slogan of sorts

LICENSE

@@ -1,4 +1,4 @@
-Copyright (c) 2014 - 2018, Přemysl Janouch <p@janouch.name>
+Copyright (c) 2014 - 2018, Přemysl Eric Janouch <p@janouch.name>
 
 Permission to use, copy, modify, and/or distribute this software for any
 purpose with or without fee is hereby granted.

liberty-proto.c

@@ -1,7 +1,7 @@
 /*
  * liberty-proto.c: the ultimate C unlibrary: protocols
  *
- * Copyright (c) 2014 - 2016, Přemysl Janouch <p@janouch.name>
+ * Copyright (c) 2014 - 2016, Přemysl Eric Janouch <p@janouch.name>
  *
  * Permission to use, copy, modify, and/or distribute this software for any
  * purpose with or without fee is hereby granted.
@@ -213,6 +213,7 @@ irc_fnmatch (const char *pattern, const char *string)
 	char x_pattern[pattern_size], x_string[string_size];
 	irc_strxfrm (x_pattern, pattern, pattern_size);
 	irc_strxfrm (x_string,  string,  string_size);
+	// FIXME: this supports [], which is not mentioned in RFC 2812
 	return fnmatch (x_pattern, x_string, 0);
 }
 
@@ -663,10 +664,11 @@ scgi_parser_push (struct scgi_parser *self,
 		if (digit == ':')
 		{
 			self->state = SCGI_READING_NAME;
+			str_remove_slice (&self->input, 0, 1);
 			break;
 		}
 
-		if (digit < '0' || digit >= '9')
+		if (digit < '0' || digit > '9')
 			return error_set (e, "invalid header netstring");
 
 		size_t new_len = self->headers_len * 10 + (digit - '0');
@@ -699,6 +701,7 @@ scgi_parser_push (struct scgi_parser *self,
 			self->state = SCGI_READING_VALUE;
 
 		str_remove_slice (&self->input, 0, 1);
+		self->headers_len--;
 		break;
 	}
 	case SCGI_READING_VALUE:
@@ -727,6 +730,7 @@ scgi_parser_push (struct scgi_parser *self,
 		}
 
 		str_remove_slice (&self->input, 0, 1);
+		self->headers_len--;
 		break;
 	}
 	case SCGI_READING_CONTENT:
@@ -791,7 +795,8 @@ enum fcgi_protocol_status
 
 struct fcgi_parser;
 
-typedef void (*fcgi_message_fn)
+/// Message handler, returns false if further processing should be stopped
+typedef bool (*fcgi_message_fn)
 	(const struct fcgi_parser *parser, void *user_data);
 
 enum fcgi_parser_state
@@ -853,7 +858,7 @@ fcgi_parser_unpack_header (struct fcgi_parser *self)
 	str_remove_slice (&self->input, 0, unpacker.offset);
 }
 
-static void
+static bool
 fcgi_parser_push (struct fcgi_parser *self, const void *data, size_t len)
 {
 	// This could be made considerably faster for high-throughput applications
@@ -865,14 +870,14 @@ fcgi_parser_push (struct fcgi_parser *self, const void *data, size_t len)
 	{
 	case FCGI_READING_HEADER:
 		if (self->input.len < FCGI_HEADER_LEN)
-			return;
+			return true;
 
 		fcgi_parser_unpack_header (self);
 		self->state = FCGI_READING_CONTENT;
 		break;
 	case FCGI_READING_CONTENT:
 		if (self->input.len < self->content_length)
-			return;
+			return true;
 
 		// Move an appropriate part of the input buffer to the content buffer
 		str_reset (&self->content);
@@ -882,10 +887,11 @@ fcgi_parser_push (struct fcgi_parser *self, const void *data, size_t len)
 		break;
 	case FCGI_READING_PADDING:
 		if (self->input.len < self->padding_length)
-			return;
+			return true;
 
 		// Call the callback to further process the message
-		self->on_message (self, self->user_data);
+		if (!self->on_message (self, self->user_data))
+			return false;
 
 		// Remove the padding from the input buffer
 		str_remove_slice (&self->input, 0, self->padding_length);
@@ -1188,8 +1194,10 @@ ws_parser_unmask (char *payload, uint64_t len, uint32_t mask)
 	{
 	case 3:
 		payload[end + 2] ^= (mask >>  8) & 0xFF;
+		// Fall-through
 	case 2:
 		payload[end + 1] ^= (mask >> 16) & 0xFF;
+		// Fall-through
 	case 1:
 		payload[end    ] ^= (mask >> 24) & 0xFF;
 	}
@@ -1738,6 +1746,8 @@ mpd_client_send_command (struct mpd_client *self, const char *command, ...)
 
 // - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
 
+/// "On success for all commands, OK is returned.  If a command fails, no more
+/// commands are executed and the appropriate ACK error is returned"
 static void
 mpd_client_list_begin (struct mpd_client *self)
 {

liberty-tui.c

@@ -1,7 +1,7 @@
 /*
  * liberty-tui.c: the ultimate C unlibrary: TUI
  *
- * Copyright (c) 2016 - 2017, Přemysl Janouch <p@janouch.name>
+ * Copyright (c) 2016 - 2017, Přemysl Eric Janouch <p@janouch.name>
  *
  * Permission to use, copy, modify, and/or distribute this software for any
  * purpose with or without fee is hereby granted.

liberty.c

@@ -1,7 +1,7 @@
 /*
  * liberty.c: the ultimate C unlibrary
  *
- * Copyright (c) 2014 - 2018, Přemysl Janouch <p@janouch.name>
+ * Copyright (c) 2014 - 2018, Přemysl Eric Janouch <p@janouch.name>
  *
  * Permission to use, copy, modify, and/or distribute this software for any
  * purpose with or without fee is hereby granted.
@@ -37,6 +37,7 @@
 #include <sys/wait.h>
 #include <sys/stat.h>
 #include <sys/time.h>
+#include <sys/uio.h>
 #include <fcntl.h>
 #include <poll.h>
 #include <signal.h>
@@ -116,6 +117,9 @@ extern char **environ;
 #define CONTAINER_OF(pointer, type, member) \
 	((type *) ((char *) pointer - offsetof (type, member)))
 
+char *liberty = "They who can give up essential liberty to obtain a little "
+	"temporary safety deserve neither liberty nor safety.";
+
 // --- Logging -----------------------------------------------------------------
 
 static void
@@ -1092,7 +1096,7 @@ struct async
 	LIST_HEADER (struct async)
 	struct async_manager *manager;      ///< Our manager object
 
-	// "cancelled" may not be accesed or modified by the worker thread
+	// "cancelled" may not be accessed or modified by the worker thread
 
 	pthread_t worker;                   ///< Worker thread ID
 	bool started;                       ///< Worker thread ID is valid
@@ -5253,7 +5257,9 @@ static struct config_item *
 config_item_parse (const char *script, size_t len,
 	bool single_value_only, struct error **e)
 {
-	struct config_parser parser = config_parser_make (script, len);
+	volatile struct config_parser parser = config_parser_make (script, len);
+	struct config_parser *volatile self = (struct config_parser *) &parser;
+
 	struct config_item *volatile object = NULL;
 	jmp_buf err;
 
@@ -5275,13 +5281,13 @@ config_item_parse (const char *script, size_t len,
 		// This is really only intended for in-program configuration
 		// and telling the line number would look awkward
 		parser.tokenizer.report_line = false;
-		object = config_parser_parse_value (&parser, err);
+		object = config_parser_parse_value (self, err);
 	}
 	else
-		object = config_parser_parse_object (&parser, err);
-	config_parser_expect (&parser, CONFIG_T_ABORT, err);
+		object = config_parser_parse_object (self, err);
+	config_parser_expect (self, CONFIG_T_ABORT, err);
 end:
-	config_parser_free (&parser);
+	config_parser_free (self);
 	return object;
 }
 

tests/liberty.c

@@ -1,7 +1,7 @@
 /*
  * tests/liberty.c
  *
- * Copyright (c) 2015 - 2016, Přemysl Janouch <p@janouch.name>
+ * Copyright (c) 2015 - 2016, Přemysl Eric Janouch <p@janouch.name>
  *
  * Permission to use, copy, modify, and/or distribute this software for any
  * purpose with or without fee is hereby granted.

tests/proto.c

@@ -1,7 +1,7 @@
 /*
  * tests/proto.c
  *
- * Copyright (c) 2015, Přemysl Janouch <p@janouch.name>
+ * Copyright (c) 2015, Přemysl Eric Janouch <p@janouch.name>
  *
  * Permission to use, copy, modify, and/or distribute this software for any
  * purpose with or without fee is hereby granted.
@@ -105,10 +105,20 @@ test_http_parser (void)
 		http_protocol_destroy (iter);
 }
 
+struct scgi_fixture
+{
+	struct scgi_parser parser;
+	bool seen_headers;
+	bool seen_content;
+};
+
 static bool
 test_scgi_parser_on_headers_read (void *user_data)
 {
-	struct scgi_parser *parser = user_data;
+	struct scgi_fixture *fixture = user_data;
+	struct scgi_parser *parser = &fixture->parser;
+	fixture->seen_headers = true;
+
 	soft_assert (parser->headers.len == 4);
 	soft_assert (!strcmp (str_map_find (&parser->headers,
 		"CONTENT_LENGTH"), "27"));
@@ -124,7 +134,9 @@ test_scgi_parser_on_headers_read (void *user_data)
 static bool
 test_scgi_parser_on_content (void *user_data, const void *data, size_t len)
 {
-	(void) user_data;
+	struct scgi_fixture *fixture = user_data;
+	fixture->seen_content = true;
+
 	soft_assert (!strncmp (data, "What is the answer to life?", len));
 	return true;
 }
@@ -132,10 +144,12 @@ test_scgi_parser_on_content (void *user_data, const void *data, size_t len)
 static void
 test_scgi_parser (void)
 {
-	struct scgi_parser parser = scgi_parser_make ();
-	parser.on_headers_read = test_scgi_parser_on_headers_read;
-	parser.on_content      = test_scgi_parser_on_content;
-	parser.user_data       = &parser;
+	struct scgi_fixture fixture = { scgi_parser_make(), false, false };
+	struct scgi_parser *parser = &fixture.parser;
+
+	parser->on_headers_read = test_scgi_parser_on_headers_read;
+	parser->on_content      = test_scgi_parser_on_content;
+	parser->user_data       = &fixture;
 
 	// This is an example straight from the specification
 	const char example[] =
@@ -147,8 +161,9 @@ test_scgi_parser (void)
 		","
 		"What is the answer to life?";
 
-	soft_assert (scgi_parser_push (&parser, example, sizeof example, NULL));
-	scgi_parser_free (&parser);
+	soft_assert (scgi_parser_push (parser, example, sizeof example, NULL));
+	soft_assert (fixture.seen_headers && fixture.seen_content);
+	scgi_parser_free (parser);
 }
 
 static bool