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1 | /* -*-c-*- |
| 2 | * |
| 7481fc9c |
3 | * $Id: source.c,v 1.2 2004/04/08 01:36:25 mdw Exp $ |
| 07d71f34 |
4 | * |
| 5 | * Standard routines for forwarding sources |
| 6 | * |
| 7 | * (c) 1999 Straylight/Edgeware |
| 8 | */ |
| 9 | |
| 10 | /*----- Licensing notice --------------------------------------------------* |
| 11 | * |
| 12 | * This file is part of the `fw' port forwarder. |
| 13 | * |
| 14 | * `fw' is free software; you can redistribute it and/or modify |
| 15 | * it under the terms of the GNU General Public License as published by |
| 16 | * the Free Software Foundation; either version 2 of the License, or |
| 17 | * (at your option) any later version. |
| 18 | * |
| 19 | * `fw' is distributed in the hope that it will be useful, |
| 20 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 21 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 22 | * GNU General Public License for more details. |
| 23 | * |
| 24 | * You should have received a copy of the GNU General Public License |
| 25 | * along with `fw'; if not, write to the Free Software Foundation, |
| 26 | * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
| 27 | */ |
| 28 | |
| 07d71f34 |
29 | /*----- Header files ------------------------------------------------------*/ |
| 30 | |
| 31 | #include <stdio.h> |
| 32 | #include <stdlib.h> |
| 33 | #include <string.h> |
| 34 | |
| 35 | #include "source.h" |
| 36 | |
| 37 | /*----- Static variables --------------------------------------------------*/ |
| 38 | |
| 39 | static source *sources = 0; |
| 40 | |
| 41 | /*----- Main code ---------------------------------------------------------*/ |
| 42 | |
| 43 | /* --- @source_add@ --- * |
| 44 | * |
| 45 | * Arguments: @source *s@ = pointer to a source |
| 46 | * |
| 47 | * Returns: --- |
| 48 | * |
| 49 | * Use: Adds a source to the master list. Only do this for passive |
| 50 | * sources (e.g., listening sockets), not active sources (e.g., |
| 51 | * executable programs). |
| 52 | */ |
| 53 | |
| 54 | void source_add(source *s) |
| 55 | { |
| 56 | s->next = sources; |
| 57 | s->prev = 0; |
| 58 | if (sources) |
| 59 | sources->prev = s; |
| 60 | sources = s; |
| 61 | } |
| 62 | |
| 63 | /* --- @source_remove@ --- * |
| 64 | * |
| 65 | * Arguments: @source *s@ = pointer to a source |
| 66 | * |
| 67 | * Returns: --- |
| 68 | * |
| 69 | * Use: Removes a source from the master list. |
| 70 | */ |
| 71 | |
| 72 | void source_remove(source *s) |
| 73 | { |
| 74 | if (s->next) |
| 75 | s->next->prev = s->prev; |
| 76 | if (s->prev) |
| 77 | s->prev->next = s->next; |
| 78 | else |
| 79 | sources = s->next; |
| 80 | } |
| 81 | |
| 82 | /* --- @source_killall@ --- * |
| 83 | * |
| 84 | * Arguments: --- |
| 85 | * |
| 86 | * Returns: --- |
| 87 | * |
| 88 | * Use: Frees all sources. |
| 89 | */ |
| 90 | |
| 91 | void source_killall(void) |
| 92 | { |
| 93 | source *s = sources; |
| 94 | while (s) { |
| 95 | source *ss = s; |
| 96 | s = s->next; |
| 97 | ss->ops->destroy(ss); |
| 98 | } |
| 99 | sources = 0; |
| 100 | } |
| 101 | |
| 102 | /*----- That's all, folks -------------------------------------------------*/ |
~mdw / fwd / blame