| 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 <errno.h> |
| 29 | |
| 30 | #ifdef HAVE_CONFIG_H |
| 31 | #include <config.h> |
| 32 | #endif |
| 33 | #include "dolcon.h" |
| 34 | #include "hublist.h" |
| 35 | |
| 36 | static regex_t *filter = NULL; |
| 37 | static pid_t fetchpid = 0; |
| 38 | static int listfd = -1; |
| 39 | static int iotag = -1; |
| 40 | static int (*handler)(int, char *, size_t) = NULL; |
| 41 | static char readbuf[65536]; |
| 42 | static off_t bufpos = 0; |
| 43 | |
| 44 | void aborthublist(void) |
| 45 | { |
| 46 | if(fetchpid > 0) { |
| 47 | gdk_input_remove(iotag); |
| 48 | iotag = -1; |
| 49 | close(listfd); |
| 50 | listfd = -1; |
| 51 | kill(fetchpid, SIGINT); |
| 52 | fetchpid = 0; |
| 53 | if(filter != NULL) { |
| 54 | regfree(filter); |
| 55 | free(filter); |
| 56 | filter = NULL; |
| 57 | } |
| 58 | if(handler != NULL) { |
| 59 | handler(PHO_FINI, NULL, 0); |
| 60 | handler = NULL; |
| 61 | } |
| 62 | } |
| 63 | } |
| 64 | |
| 65 | int validhub(char *field, ...) |
| 66 | { |
| 67 | int match; |
| 68 | va_list args; |
| 69 | |
| 70 | if(filter == NULL) |
| 71 | return(1); |
| 72 | match = 0; |
| 73 | va_start(args, field); |
| 74 | do { |
| 75 | if(!regexec(filter, field, 0, NULL, 0)) { |
| 76 | match = 1; |
| 77 | break; |
| 78 | } |
| 79 | } while((field = va_arg(args, char *)) != NULL); |
| 80 | va_end(args); |
| 81 | return(match); |
| 82 | } |
| 83 | |
| 84 | static void readcb(gpointer data, gint source, GdkInputCondition cond) |
| 85 | { |
| 86 | int ret; |
| 87 | |
| 88 | if(!(cond & GDK_INPUT_READ)) |
| 89 | return; |
| 90 | if(bufpos == sizeof(readbuf)) |
| 91 | bufpos = 0; |
| 92 | ret = read(listfd, readbuf + bufpos, sizeof(readbuf) - bufpos); |
| 93 | if(ret <= 0) { |
| 94 | if(ret < 0) |
| 95 | msgbox(GTK_MESSAGE_ERROR, GTK_BUTTONS_OK, _("Could not read from public hub listing process: %s"), strerror(errno)); |
| 96 | else |
| 97 | handler(PHO_EOF, NULL, 0); |
| 98 | aborthublist(); |
| 99 | } else { |
| 100 | bufpos += ret; |
| 101 | if((ret = handler(PHO_DATA, readbuf, (size_t)bufpos)) < 0) |
| 102 | aborthublist(); |
| 103 | else |
| 104 | memmove(readbuf, readbuf + ret, bufpos -= ret); |
| 105 | } |
| 106 | } |
| 107 | |
| 108 | void fetchhublist(char *url, regex_t *flt) |
| 109 | { |
| 110 | int pfd[2]; |
| 111 | int len; |
| 112 | char *p; |
| 113 | |
| 114 | aborthublist(); |
| 115 | filter = flt; |
| 116 | pipe(pfd); |
| 117 | if((fetchpid = fork()) == 0) { |
| 118 | dup2(pfd[1], 1); |
| 119 | close(pfd[0]); |
| 120 | close(pfd[1]); |
| 121 | execlp("wget", "wget", "-qO", "-", url, NULL); |
| 122 | perror("wget"); |
| 123 | exit(127); |
| 124 | } |
| 125 | close(pfd[1]); |
| 126 | listfd = pfd[0]; |
| 127 | len = strlen(url); |
| 128 | p = url + len; |
| 129 | if((len > 4) && !strncmp(p - 4, ".bz2", 4)) { |
| 130 | p -= 4; |
| 131 | len -= 4; |
| 132 | pipe(pfd); |
| 133 | if(fork() == 0) { |
| 134 | dup2(listfd, 0); |
| 135 | dup2(pfd[1], 1); |
| 136 | close(listfd); |
| 137 | close(pfd[0]); |
| 138 | close(pfd[1]); |
| 139 | execlp("bzcat", "bzcat", NULL); |
| 140 | perror("bzcat"); |
| 141 | exit(127); |
| 142 | } |
| 143 | close(listfd); |
| 144 | close(pfd[1]); |
| 145 | listfd = pfd[0]; |
| 146 | } |
| 147 | if((len > 4) && !strncmp(p - 4, ".xml", 4)) { |
| 148 | p -= 4; |
| 149 | len -= 4; |
| 150 | handler = pubhubxmlhandler; |
| 151 | } else { |
| 152 | handler = pubhuboldhandler; |
| 153 | } |
| 154 | bufpos = 0; |
| 155 | handler(PHO_INIT, NULL, 0); |
| 156 | iotag = gdk_input_add(listfd, GDK_INPUT_READ, readcb, NULL); |
| 157 | } |