| 1 | /* |
| 2 | * Dolda Connect - Modular multiuser Direct Connect-style client |
| 3 | * Copyright (C) 2007 Fredrik Tolf (fredrik@dolda2000.com) |
| 4 | * |
| 5 | * This program is free software; you can redistribute it and/or modify |
| 6 | * it under the terms of the GNU General Public License as published by |
| 7 | * the Free Software Foundation; either version 2 of the License, or |
| 8 | * (at your option) any later version. |
| 9 | * |
| 10 | * This program is distributed in the hope that it will be useful, |
| 11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 13 | * GNU General Public License for more details. |
| 14 | * |
| 15 | * You should have received a copy of the GNU General Public License |
| 16 | * along with this program; if not, write to the Free Software |
| 17 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 18 | */ |
| 19 | |
| 20 | #include <stdlib.h> |
| 21 | #include <stdio.h> |
| 22 | #include <unistd.h> |
| 23 | #include <regex.h> |
| 24 | #include <signal.h> |
| 25 | #include <string.h> |
| 26 | #include <stdarg.h> |
| 27 | #include <gtk/gtk.h> |
| 28 | #include <bzlib.h> |
| 29 | #include <errno.h> |
| 30 | #include <sys/poll.h> |
| 31 | |
| 32 | #ifdef HAVE_CONFIG_H |
| 33 | #include <config.h> |
| 34 | #endif |
| 35 | #include "dolcon.h" |
| 36 | #include "hublist.h" |
| 37 | #include <http.h> |
| 38 | |
| 39 | static void settags(void); |
| 40 | |
| 41 | static regex_t *filter = NULL; |
| 42 | static int itag = -1, otag = -1; |
| 43 | static int (*handler)(int, char *, size_t) = NULL; |
| 44 | static int state; |
| 45 | static struct htconn *hc; |
| 46 | static bz_stream *bzs; |
| 47 | /* Only needed because of bzlib: */ |
| 48 | static char *mybuf; |
| 49 | static size_t mybufsize, mybufdata; |
| 50 | |
| 51 | void aborthublist(void) |
| 52 | { |
| 53 | if(mybuf != NULL) { |
| 54 | free(mybuf); |
| 55 | mybuf = NULL; |
| 56 | mybufsize = mybufdata = 0; |
| 57 | } |
| 58 | if(hc != NULL) { |
| 59 | if(itag != -1) |
| 60 | gdk_input_remove(itag); |
| 61 | if(otag != -1) |
| 62 | gdk_input_remove(otag); |
| 63 | itag = otag = -1; |
| 64 | freehtconn(hc); |
| 65 | hc = NULL; |
| 66 | if(bzs != NULL) { |
| 67 | BZ2_bzDecompressEnd(bzs); |
| 68 | free(bzs); |
| 69 | } |
| 70 | if(filter != NULL) { |
| 71 | regfree(filter); |
| 72 | free(filter); |
| 73 | filter = NULL; |
| 74 | } |
| 75 | if(handler != NULL) { |
| 76 | handler(PHO_FINI, NULL, 0); |
| 77 | handler = NULL; |
| 78 | } |
| 79 | } |
| 80 | } |
| 81 | |
| 82 | int validhub(char *field, ...) |
| 83 | { |
| 84 | int match; |
| 85 | va_list args; |
| 86 | |
| 87 | if(filter == NULL) |
| 88 | return(1); |
| 89 | match = 0; |
| 90 | va_start(args, field); |
| 91 | do { |
| 92 | if(!regexec(filter, field, 0, NULL, 0)) { |
| 93 | match = 1; |
| 94 | break; |
| 95 | } |
| 96 | } while((field = va_arg(args, char *)) != NULL); |
| 97 | va_end(args); |
| 98 | return(match); |
| 99 | } |
| 100 | |
| 101 | static void fdcb(gpointer data, gint source, GdkInputCondition cond) |
| 102 | { |
| 103 | int ret, bzret, hret; |
| 104 | |
| 105 | if(itag != -1) |
| 106 | gdk_input_remove(itag); |
| 107 | if(otag != -1) |
| 108 | gdk_input_remove(otag); |
| 109 | itag = otag = -1; |
| 110 | ret = htprocess(hc, ((cond & GDK_INPUT_READ)?POLLIN:0) | ((cond & GDK_INPUT_WRITE)?POLLOUT:0)); |
| 111 | if(ret < 0) { |
| 112 | msgbox(GTK_MESSAGE_ERROR, GTK_BUTTONS_OK, _("Could not read hublist from server: %s"), strerror(errno)); |
| 113 | aborthublist(); |
| 114 | return; |
| 115 | } |
| 116 | if(state == 0) { |
| 117 | if(hc->rescode != 0) { |
| 118 | if(hc->rescode != 200) { |
| 119 | msgbox(GTK_MESSAGE_ERROR, GTK_BUTTONS_OK, _("The hublist server returned an error: \"%i %s\""), hc->rescode, hc->resstr); |
| 120 | aborthublist(); |
| 121 | return; |
| 122 | } |
| 123 | state = 1; |
| 124 | } |
| 125 | } |
| 126 | if(state == 1) { |
| 127 | if(hc->databufdata > 0) { |
| 128 | if(bzs == NULL) { |
| 129 | bufcat(mybuf, hc->databuf, hc->databufdata); |
| 130 | hc->databufdata = 0; |
| 131 | } else { |
| 132 | bzs->next_in = hc->databuf; |
| 133 | bzs->avail_in = hc->databufdata; |
| 134 | do { |
| 135 | sizebuf2(mybuf, mybufdata + 1024, 1); |
| 136 | bzs->next_out = mybuf + mybufdata; |
| 137 | bzs->avail_out = mybufsize - mybufdata; |
| 138 | bzret = BZ2_bzDecompress(bzs); |
| 139 | if((bzret != BZ_OK) && (bzret != BZ_STREAM_END)) { |
| 140 | msgbox(GTK_MESSAGE_ERROR, GTK_BUTTONS_OK, _("Could not decompress hublist (%i)"), hret); |
| 141 | aborthublist(); |
| 142 | return; |
| 143 | } |
| 144 | mybufdata = mybufsize - bzs->avail_out; |
| 145 | if(bzret == BZ_STREAM_END) { |
| 146 | ret = 1; |
| 147 | break; |
| 148 | } |
| 149 | } while(bzs->avail_out == 0); |
| 150 | memmove(hc->databuf, bzs->next_in, hc->databufdata -= (bzs->next_in - hc->databuf)); |
| 151 | } |
| 152 | if((hret = handler(PHO_DATA, mybuf, mybufdata)) < 0) |
| 153 | aborthublist(); |
| 154 | else |
| 155 | memmove(mybuf, mybuf + hret, mybufdata -= hret); |
| 156 | } |
| 157 | if(ret) { |
| 158 | handler(PHO_EOF, NULL, 0); |
| 159 | aborthublist(); |
| 160 | } |
| 161 | } |
| 162 | if(hc != NULL) |
| 163 | settags(); |
| 164 | } |
| 165 | |
| 166 | static void settags(void) |
| 167 | { |
| 168 | if(htpollflags(hc) & POLLIN) |
| 169 | itag = gdk_input_add(hc->fd, GDK_INPUT_READ, fdcb, NULL); |
| 170 | if(htpollflags(hc) & POLLOUT) |
| 171 | otag = gdk_input_add(hc->fd, GDK_INPUT_WRITE, fdcb, NULL); |
| 172 | } |
| 173 | |
| 174 | void fetchhublist(char *url, regex_t *flt) |
| 175 | { |
| 176 | int len; |
| 177 | char *p; |
| 178 | struct hturlinfo *u; |
| 179 | |
| 180 | aborthublist(); |
| 181 | filter = flt; |
| 182 | u = parseurl(url); |
| 183 | hc = htconnect(u); |
| 184 | freeurl(u); |
| 185 | state = 0; |
| 186 | settags(); |
| 187 | |
| 188 | len = strlen(url); |
| 189 | p = url + len; |
| 190 | if((len > 4) && !strncmp(p - 4, ".bz2", 4)) { |
| 191 | p -= 4; |
| 192 | len -= 4; |
| 193 | bzs = memset(smalloc(sizeof(*bzs)), 0, sizeof(*bzs)); |
| 194 | if(BZ2_bzDecompressInit(bzs, 0, 0) != BZ_OK) { |
| 195 | msgbox(GTK_MESSAGE_ERROR, GTK_BUTTONS_OK, _("Could not initialize decompression library")); |
| 196 | free(bzs); |
| 197 | bzs = NULL; |
| 198 | aborthublist(); |
| 199 | return; |
| 200 | } |
| 201 | } |
| 202 | if((len > 4) && !strncmp(p - 4, ".xml", 4)) { |
| 203 | p -= 4; |
| 204 | len -= 4; |
| 205 | handler = pubhubxmlhandler; |
| 206 | } else { |
| 207 | handler = pubhuboldhandler; |
| 208 | } |
| 209 | handler(PHO_INIT, NULL, 0); |
| 210 | } |