2 * Copyright (C) 2005-2006 Andre Noll <maan@systemlinux.org>
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; either version 2 of the License, or
7 * (at your option) any later version.
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write to the Free Software
16 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
18 /** \file filter.c the stand-alone filter program */
20 #include "gcc-compat.h"
23 #include "filter.cmdline.h"
31 #define INBUF_SIZE 32 * 1024
33 static struct filter_chain_info filter_chain_info_struct;
34 static struct filter_chain_info *fci = &filter_chain_info_struct;
36 struct gengetopt_args_info conf;
38 __printf_2_3 void para_log(int ll, char* fmt,...)
42 /* ignore log message if loglevel is not high enough */
43 if (ll < conf.loglevel_arg)
46 vfprintf(stderr, fmt, argp);
54 static int init_active_filter_list(void)
57 struct filter_node *fn;
59 INIT_LIST_HEAD(&fci->filters);
62 fci->in_loaded = &loaded;
65 for (i = 0; i < conf.filter_given; i++) {
66 char *fa = para_strdup(conf.filter_arg[i]);
67 fn = para_calloc(sizeof(struct filter_node));
68 filter_num = check_filter_arg(fa, &fn->conf);
74 INIT_LIST_HEAD(&fn->callbacks);
75 fn->filter = &filters[filter_num];
76 PARA_DEBUG_LOG("adding %s to filter chain\n", fn->filter->name);
77 list_add_tail(&fn->node, &fci->filters);
79 if (list_empty(&fci->filters))
84 static void open_filters(void)
86 struct filter_node *fn;
88 list_for_each_entry(fn, &fci->filters, node) {
90 PARA_INFO_LOG("opened %s filter\n", fn->filter->name);
91 fci->outbuf = fn->buf;
92 fci->out_loaded = &fn->loaded;
96 static int parse_config(int argc, char *argv[])
98 static char *cf; /* config file */
102 if (cmdline_parser(argc, argv, &conf))
103 return -E_FILTER_SYNTAX;
105 char *home = para_homedir();
106 cf = make_message("%s/.paraslash/filter.conf", home);
109 if (!stat(cf, &statbuf)) {
110 if (cmdline_parser_configfile(cf, &conf, 0, 0, 0))
111 return -E_FILTER_SYNTAX;
113 if (!conf.list_filters_given)
115 printf("available filters: ");
116 for (i = 0; filters[i].name; i++)
117 printf("%s%s", i? " " : "", filters[i].name);
118 printf("\nTry para_filter -f<filtername>:-h for help on <filtername>\n");
122 int main(int argc, char *argv[])
125 char *ib, *ob; /* input/output buffer */
126 size_t *il, *ol; /* number of loaded bytes in input/output buffer */
128 filter_init(filters);
129 ret = parse_config(argc, argv);
132 inbuf = para_malloc(INBUF_SIZE);
133 ret = init_active_filter_list();
140 ol = fci->out_loaded;
141 PARA_DEBUG_LOG("ib %p in, ob: %p\n", ib, ob);
143 if (*il < INBUF_SIZE && !eof) {
144 ret = read(STDIN_FILENO, ib + *il, INBUF_SIZE - *il);
145 PARA_DEBUG_LOG("read %d/%d\n", ret, INBUF_SIZE - *il);
152 ret = filter_io(fci);
157 ret = write(STDOUT_FILENO, ob, *ol);
158 PARA_DEBUG_LOG("wrote %d/%d\n", ret, *ol);
163 PARA_NOTICE_LOG("short write: %d bytes left\n", *ol);
164 memmove(ob, ob + ret, *ol);
167 if (!eof || converted)
172 PARA_EMERG_LOG("%s\n", PARA_STRERROR(-ret));