/usr/include/gnunet/gnunet_helper_lib.h is in gnunet-dev 0.9.3-7build1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 | /*
This file is part of GNUnet.
(C) 2011, 2012 Christian Grothoff
GNUnet 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 3, or (at your
option) any later version.
GNUnet 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.
You should have received a copy of the GNU General Public License
along with GNUnet; see the file COPYING. If not, write to the
Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA.
*/
/**
* @file include/gnunet_helper_lib.h
* @brief API for dealing with (SUID) helper processes that communicate via GNUNET_MessageHeaders on stdin/stdout
* @author Philipp Toelke
* @author Christian Grothoff
*/
#ifndef GNUNET_HELPER_LIB_H
#define GNUNET_HELPER_LIB_H
#include "gnunet_scheduler_lib.h"
#include "gnunet_server_lib.h"
/**
* The handle to a helper process.
*/
struct GNUNET_HELPER_Handle;
/**
* @brief Starts a helper and begins reading from it
*
* @param binary_name name of the binary to run
* @param binary_argv NULL-terminated list of arguments to give when starting the binary (this
* argument must not be modified by the client for
* the lifetime of the helper handle)
* @param cb function to call if we get messages from the helper
* @param cb_cls Closure for the callback
* @return the new Handle, NULL on error
*/
struct GNUNET_HELPER_Handle *
GNUNET_HELPER_start (const char *binary_name,
char *const binary_argv[],
GNUNET_SERVER_MessageTokenizerCallback cb, void *cb_cls);
/**
* @brief Kills the helper, closes the pipe and frees the handle
*
* @param h handle to helper to stop
*/
void
GNUNET_HELPER_stop (struct GNUNET_HELPER_Handle *h);
/**
* Continuation function.
*
* @param cls closure
* @param result GNUNET_OK on success,
* GNUNET_NO if helper process died
* GNUNET_SYSERR during GNUNET_HELPER_stop
*/
typedef void (*GNUNET_HELPER_Continuation)(void *cls,
int result);
/**
* Handle to cancel 'send'
*/
struct GNUNET_HELPER_SendHandle;
/**
* Send an message to the helper.
*
* @param h helper to send message to
* @param msg message to send
* @param can_drop can the message be dropped if there is already one in the queue?
* @param cont continuation to run once the message is out
* @param cont_cls closure for 'cont'
* @return NULL if the message was dropped,
* otherwise handle to cancel *cont* (actual transmission may
* not be abortable)
*/
struct GNUNET_HELPER_SendHandle *
GNUNET_HELPER_send (struct GNUNET_HELPER_Handle *h,
const struct GNUNET_MessageHeader *msg,
int can_drop,
GNUNET_HELPER_Continuation cont,
void *cont_cls);
/**
* Cancel a 'send' operation. If possible, transmitting the
* message is also aborted, but at least 'cont' won't be
* called.
*
* @param sh operation to cancel
*/
void
GNUNET_HELPER_send_cancel (struct GNUNET_HELPER_SendHandle *sh);
#endif /* end of include guard: GNUNET_HELPER_LIB_H */
|