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* command: added command_success() and command_error()Max Kellermann2008-09-071-2/+2
| | | | | | | These two functions take a client struct instead of the file descriptor. We will now begin passing the client struct around instead of a raw file descriptor (which needed a linear lookup in the client list to be useful).
* client: added client_printf()Max Kellermann2008-09-071-0/+29
| | | | | | Based on client_puts(), client_printf() is the successor of fdprintf(). As soon as all fdprintf() callers have been rewritten to use client_printf(), we can remove fdprintf().
* client: added client_write() and client_puts()Max Kellermann2008-09-071-24/+34
| | | | | | client_write() writes a buffer to the client and buffers it if required. client_puts() does the same for a C string. The next patch will add more tools which will replace fdprintf() later.
* include cleanupMax Kellermann2008-09-061-1/+0
| | | | As usual, include only headers which are really needed.
* client: don't check FD_ISSET(client->fd) on expired clientMax Kellermann2008-09-061-1/+2
| | | | | client->fd becomes -1 when the client expires. Don't use FD_ISSET() with this expired client; doing so would cause a crash due to SIGBUS.
* client: removed assert(client->fd)>=0Max Kellermann2008-09-061-4/+2
| | | | | | Since client->fd==-1 has become our "expired" flag, it may already be -1 when client_close() is called. Don't assert that it is still non-negative, and call client_set_expired() instead.
* export the function client_is_expired()Max Kellermann2008-08-291-8/+1
| | | | | | | Instead of passing the pointer to the "expired" flag to processListOfCommands(), this function should use the client API to check this flag. We can now remove the "global_expired" hack introduced recently.
* client: pass the client struct to processCommand()Max Kellermann2008-08-291-2/+10
| | | | | | | | Start exporting the client struct as an opaque struct. For now, pass it only to processCommand() and processListOfCommands(), and provide a function to extract the socket handle. Later, we will propagate the pointer to all command implementations, and of course to client_print() etc.
* client: check "expired" after command executionMax Kellermann2008-08-291-7/+14
| | | | | | The old code tried to write a response to the client, without even checking if it was already closed. Now that we have added more assertions, these may fail... perform the "expired" check earlier.
* client: added global "expired" flagMax Kellermann2008-08-291-6/+7
| | | | | | | | | | Patch bdeb8e14 ("client: moved "expired" accesses into inline function") was created under the wrong assumption that processListOfCommands() could modify the expired flag, which is not the case. Although "expired" is a non-const pointer, processListOfCommands() just reads it, using it as the break condition in a "while" loop. I will address this issue with a better overall solution, but for now provide a pointer to a global "expired" flag.
* client: removed superfluous assertionMax Kellermann2008-08-291-1/+0
| | | | | | client_defer_output() was modified so that it can create the deferred_send list. With this patch, the assertion on "deferred_send!=NULL" has become invalid. Remove it.
* client: more assertionsMax Kellermann2008-08-281-0/+6
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* client: replace "expired" flag with fd==-1Max Kellermann2008-08-281-6/+6
| | | | Why waste 4 bytes for a flag which we can hide in another variable.
* client: moved "expired" accesses into inline functionMax Kellermann2008-08-281-13/+29
| | | | Hiding this flag allows us later to remove it easily.
* moved code to sockaddr_to_tmp_string()Max Kellermann2008-08-281-9/+17
| | | | | Unclutter the client_new() constructor by moving unrelated complex code into a separate function.
* client: no while loop in client_manager_io()Max Kellermann2008-08-281-32/+26
| | | | | | The last patch removed the "continue" directive, and now the while loop is without function. Remove it. Also make client_manager_io() return 0.
* client: select() errors are fatalMax Kellermann2008-08-281-30/+6
| | | | | | | Previously, when select() failed, we assumed that there was an invalid file descriptor in one of the client structs. Thus we tried select() one by one. This is bogus, because we should never have invalid file descriptors. Remove it, and make select() errors fatal.
* client: use client_defer_output() in client_write()Max Kellermann2008-08-281-7/+3
| | | | | Eliminate duplicated code, call client_defer_output() which we splitted from client_write_output() earlier.
* moved code to client_write()Max Kellermann2008-08-281-26/+28
| | | | | Move the second part of client_write_output() into a separate function.
* client: client_defer_output() can create the first defer bufferMax Kellermann2008-08-281-5/+5
| | | | | | client_defer_output() was designed to add new buffers to an existing deferred_send buffer. Tweak it and allow it to create a new buffer list.
* client: return early on error in client_defer_output()Max Kellermann2008-08-281-5/+7
| | | | | Exit the function when an error occurs, and move the rest of the following code one indent level left.
* client: moved code to client_defer_output()Max Kellermann2008-08-281-20/+27
| | | | | Split the large function client_write_output() into two parts; this is the first code moving patch.
* don't free client resources except in client_close()Max Kellermann2008-08-281-15/+0
| | | | | | All of the client's resources are freed in client_close(). It is enough to set the "expired" flag, no need to duplicate lots of destruction code again and again.
* client: allocate clients dynamicallyMax Kellermann2008-08-281-90/+76
| | | | | | Due to the large buffers in the client struct, the static client array eats several megabytes of RAM with a maximum of only 10 clients. Stop this waste and allocate each client struct from the heap.
* client: added function client_by_fd()Max Kellermann2008-08-281-13/+21
| | | | | The code becomes less complex and more readable when we move this linear search into a separate mini function.
* client: return early in client_new()Max Kellermann2008-08-281-30/+31
| | | | This saves one level of indent.
* client: renamed all public functionsMax Kellermann2008-08-281-6/+6
| | | | | | Functions which operate on the whole client list are prefixed with "client_manager_", and functions which handle just one client just get "client_".
* client: renamed internal functions and variablesMax Kellermann2008-08-281-297/+296
| | | | | Rename all static functions, variables and macros which have "interface" in their name to something nicer prefixed with "client_".
* client: renamed Interface to struct clientMax Kellermann2008-08-281-19/+19
| | | | | | | Second patch: rename the internal struct name. We will eventually export this type as an opaque forward-declared struct later, so we can pass a struct pointer instead of a file descriptor, which would save us an expensive linear lookup.
* renamed interface.c to client.cMax Kellermann2008-08-281-0/+797
I don't believe "interface" is a good name for something like "connection by a client to MPD", let's call it "client". This is the first patch in the series which changes the name, beginning with the file name.