/* X-Chat * Copyright (C) 1998 Peter Zelezny. * * This program 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 2 of the License, or * (at your option) any later version. * * This program 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 this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA */ #include #include #include #include #include "xchat.h" #include "xchatc.h" #include "cfgfiles.h" #include "fe.h" #include "tree.h" #include "url.h" #ifdef HAVE_STRINGS_H #include #endif void *url_tree = NULL; static int url_free (char *url, void *data) { free (url); return TRUE; } void url_clear (void) { tree_foreach (url_tree, (tree_traverse_func *)url_free, NULL); tree_destroy (url_tree); url_tree = NULL; } static int url_save_cb (char *url, FILE *fd) { fprintf (fd, "%s\n", url); return TRUE; } void url_save (const char *fname, const char *mode, gboolean fullpath) { FILE *fd; if (fullpath) fd = xchat_fopen_file (fname, mode, XOF_FULLPATH); else fd = xchat_fopen_file (fname, mode, 0); if (fd == NULL) return; tree_foreach (url_tree, (tree_traverse_func *)url_save_cb, fd); fclose (fd); } void url_autosave (void) { url_save ("url.save", "a", FALSE); } static int url_find (char *urltext) { int pos; if (tree_find (url_tree, urltext, (tree_cmp_func *)strcasecmp, NULL, &pos)) return 1; return 0; } static void url_add (char *urltext, int len) { char *data; int size; if (!prefs.url_grabber) return; data = malloc (len + 1); if (!data) return; memcpy (data, urltext, len); data[len] = 0; if (data[len - 1] == '.') /* chop trailing dot */ { len--; data[len] = 0; } if (data[len - 1] == ')') /* chop trailing ) */ data[len - 1] = 0; if (url_find (data)) { free (data); return; } if (!url_tree) url_tree = tree_new ((tree_cmp_func *)strcasecmp, NULL); size = tree_size (url_tree); /* 0 is unlimited */ if (prefs.url_grabber_limit > 0 && size >= prefs.url_grabber_limit) { /* the loop is necessary to handle having the limit lowered while xchat is running */ size -= prefs.url_grabber_limit; for(; size > 0; size--) tree_remove_at_pos (url_tree, 0); } tree_append (url_tree, data); fe_url_add (data); } /* check if a word is clickable. This is called on mouse motion events, so keep it FAST! This new version was found to be almost 3x faster than 2.4.4 release. */ int url_check_word (char *word, int len) { #define D(x) (x), ((sizeof (x)) - 1) static const struct { const char *s; int len; } prefix[] = { { D("irc.") }, { D("ftp.") }, { D("www.") }, { D("irc://") }, { D("ftp://") }, { D("http://") }, { D("https://") }, { D("file://") }, { D("rtsp://") }, { D("ut2004://") }, }, suffix[] = { { D(".org") }, { D(".net") }, { D(".com") }, { D(".edu") }, { D(".html") }, { D(".info") }, { D(".name") }, }; #undef D const char *at, *dot; int i, dots; if (len > 1 && word[1] == '#' && strchr("@+^%*#", word[0])) return WORD_CHANNEL; if ((word[0] == '#' || word[0] == '&') && word[1] != '#' && word[1] != 0) return WORD_CHANNEL; for (i = 0; i < G_N_ELEMENTS(prefix); i++) { int l; l = prefix[i].len; if (len > l) { int j; /* This is pretty much strncasecmp(). */ for (j = 0; j < l; j++) { unsigned char c = word[j]; if (tolower(c) != prefix[i].s[j]) break; } if (j == l) return WORD_URL; } } at = strchr (word, '@'); /* check for email addy */ dot = strrchr (word, '.'); if (at && dot) { if (at < dot) { if (strchr (word, '*')) return WORD_HOST; else return WORD_EMAIL; } } /* check if it's an IP number */ dots = 0; for (i = 0; i < len; i++) { if (word[i] == '.' && i > 0) dots++; /* allow 127.0.0.1:80 */ else if (!isdigit ((unsigned char) word[i]) && word[i] != ':') { dots = 0; break; } } if (dots == 3) return WORD_HOST; if (len > 5) { for (i = 0; i < G_N_ELEMENTS(suffix); i++) { int l; l = suffix[i].len; if (len > l) { const unsigned char *p = &word[len - l]; int j; /* This is pretty much strncasecmp(). */ for (j = 0; j < l; j++) { if (tolower(p[j]) != suffix[i].s[j]) break; } if (j == l) return WORD_HOST; } } if (word[len - 3] == '.' && isalpha ((unsigned char) word[len - 2]) && isalpha ((unsigned char) word[len - 1])) return WORD_HOST; } return 0; } void url_check_line (char *buf, int len) { char *po = buf; char *start; int wlen; if (buf[0] == ':' && buf[1] != 0) po++; start = po; /* check each "word" (space separated) */ while (1) { switch (po[0]) { case 0: case ' ': wlen = po - start; if (wlen > 2) { /* HACK! :( */ /* This is to work around not being able to detect URLs that are at the start of messages. */ if (start[0] == ':') { start++; wlen--; } if (start[0] == '+' || start[0] == '-') { start++; wlen--; } if (wlen > 2 && url_check_word (start, wlen) == WORD_URL) { url_add (start, wlen); } } if (po[0] == 0) return; po++; start = po; break; default: po++; } } }