Rework url matching to make it easier to add schemes.
The new way allows great control of what a url is composed of. Added a bunch of new schemes.
This commit is contained in:
Diogo Sousa
parent
6bc05a8bc8
commit
805b33552b
161
src/common/url.c
161
src/common/url.c
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@ -314,8 +314,8 @@ do_an_re(const char *word,int *start, int *end, int *type)
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} func_t;
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func_t funcs[] =
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{
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{ re_email, WORD_EMAIL },
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{ re_url, WORD_URL },
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{ re_email, WORD_EMAIL },
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{ re_channel, WORD_CHANNEL },
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{ re_host, WORD_HOST },
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{ re_path, WORD_PATH },
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@ -360,7 +360,7 @@ make_re(char *grist, char *type)
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GRegex *ret;
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GError *err = NULL;
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ret = g_regex_new (grist, G_REGEX_CASELESS + G_REGEX_OPTIMIZE, 0, &err);
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ret = g_regex_new (grist, G_REGEX_CASELESS | G_REGEX_OPTIMIZE, 0, &err);
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g_free (grist);
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return ret;
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}
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@ -389,60 +389,123 @@ re_host (void)
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#define LPAR "\\("
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#define RPAR "\\)"
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#define NOPARENS "[^() \t]*"
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#define PATH \
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"(" \
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"(" LPAR NOPARENS RPAR ")" \
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"|" \
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"(" NOPARENS ")" \
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")*" /* Zero or more occurrences of either of these */ \
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"(?<![.,?!\\]])" /* Not allowed to end with these */
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#define USERINFO "([-a-z0-9._~%]+@)"
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char *prefix[] = {
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"irc\\.",
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"ftp\\.",
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"www\\.",
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"irc://",
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"ircs://",
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"ftp://",
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"http://",
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"https://",
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"file://",
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"rtsp://",
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NULL
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/* Flags used to describe URIs (RFC 3986)
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*
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* Bellow is an example of what the flags match.
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*
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* URI_AUTHORITY - http://example.org:80/foo/bar
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* ^^^^^^^^^^^^^^^^
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* URI_USERINFO/URI_OPT_USERINFO - http://user@example.org:80/foo/bar
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* ^^^^^
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* URI_PATH - http://example.org:80/foo/bar
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* ^^^^^^^^
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*/
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#define URI_AUTHORITY (1 << 0)
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#define URI_OPT_USERINFO (1 << 1)
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#define URI_USERINFO (1 << 2)
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#define URI_PATH (1 << 3)
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struct
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{
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const char *scheme; /* scheme name. e.g. http */
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const char *path_sep; /* string that begins the path */
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int flags; /* see above (flag definitions) */
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} uri[] = {
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{ "irc", "/", URI_AUTHORITY | URI_PATH },
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{ "ircs", "/", URI_AUTHORITY | URI_PATH },
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{ "rtsp", "/", URI_AUTHORITY | URI_PATH },
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{ "feed", "/", URI_AUTHORITY | URI_PATH },
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{ "teamspeak", "?", URI_AUTHORITY | URI_PATH },
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{ "ftp", "/", URI_AUTHORITY | URI_OPT_USERINFO | URI_PATH },
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{ "sftp", "/", URI_AUTHORITY | URI_OPT_USERINFO | URI_PATH },
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{ "ftps", "/", URI_AUTHORITY | URI_OPT_USERINFO | URI_PATH },
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{ "http", "/", URI_AUTHORITY | URI_OPT_USERINFO | URI_PATH },
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{ "https", "/", URI_AUTHORITY | URI_OPT_USERINFO | URI_PATH },
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{ "cvs", "/", URI_AUTHORITY | URI_OPT_USERINFO | URI_PATH },
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{ "svn", "/", URI_AUTHORITY | URI_OPT_USERINFO | URI_PATH },
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{ "git", "/", URI_AUTHORITY | URI_OPT_USERINFO | URI_PATH },
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{ "rsync", "/", URI_AUTHORITY | URI_OPT_USERINFO | URI_PATH },
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{ "mumble", "/", URI_AUTHORITY | URI_OPT_USERINFO | URI_PATH },
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{ "ventrilo", "/", URI_AUTHORITY | URI_OPT_USERINFO | URI_PATH },
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{ "xmpp", "/", URI_AUTHORITY | URI_OPT_USERINFO | URI_PATH },
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{ "file", "/", URI_AUTHORITY | URI_OPT_USERINFO | URI_PATH },
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{ "h323", ";", URI_AUTHORITY | URI_OPT_USERINFO | URI_PATH },
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{ "imap", "/", URI_AUTHORITY | URI_OPT_USERINFO | URI_PATH },
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{ "pop", "/", URI_AUTHORITY | URI_OPT_USERINFO | URI_PATH },
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{ "nfs", "/", URI_AUTHORITY | URI_OPT_USERINFO | URI_PATH },
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{ "smb", "/", URI_AUTHORITY | URI_OPT_USERINFO | URI_PATH },
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{ "ssh", "", URI_AUTHORITY | URI_OPT_USERINFO },
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{ "sip", "", URI_AUTHORITY | URI_USERINFO },
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{ "sips", "", URI_AUTHORITY | URI_USERINFO },
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{ "magnet", "?", URI_PATH },
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{ "mailto", "", URI_PATH },
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{ "bitcoin", "", URI_PATH },
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{ "gtalk", "", URI_PATH },
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{ "steam", "", URI_PATH },
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{ NULL, '\0', 0}
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};
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static GRegex *
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re_url (void)
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{
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static GRegex *url_ret;
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static GRegex *url_ret = NULL;
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GString *grist_gstr;
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char *grist;
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char *scheme;
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int i;
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if (url_ret) return url_ret;
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scheme = g_strjoinv ("|", prefix);
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grist = g_strdup_printf (
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"(" /* URL or HOST */
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"("
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SCHEME HOST OPT_PORT
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"(" /* Optional "/path?query_string#fragment_id" */
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"/" /* Must start with slash */
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"("
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"(" LPAR NOPARENS RPAR ")"
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"|"
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"(" NOPARENS ")"
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")*" /* Zero or more occurrences of either of these */
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"(?<![.,?!\\]])" /* Not allowed to end with these */
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")?" /* Zero or one of this /path?query_string#fragment_id thing */
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")|("
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HOST OPT_PORT "/"
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"(" /* Optional "path?query_string#fragment_id" */
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"("
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"(" LPAR NOPARENS RPAR ")"
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"|"
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"(" NOPARENS ")"
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")*" /* Zero or more occurrences of either of these */
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"(?<![.,?!\\]])" /* Not allowed to end with these */
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")?" /* Zero or one of this /path?query_string#fragment_id thing */
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")"
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")"
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, scheme
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);
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grist_gstr = g_string_new (NULL);
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/* Add regex "host/path", representing a "schemeless" url */
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g_string_append (grist_gstr, "(" HOST OPT_PORT "/" "(" PATH ")?" ")");
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for (i = 0; uri[i].scheme; i++)
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{
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g_string_append (grist_gstr, "|(");
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g_string_append_printf (grist_gstr, "%s:", uri[i].scheme);
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if (uri[i].flags & URI_AUTHORITY)
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g_string_append (grist_gstr, "//");
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if (uri[i].flags & URI_USERINFO)
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g_string_append (grist_gstr, USERINFO);
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else if (uri[i].flags & URI_OPT_USERINFO)
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g_string_append (grist_gstr, USERINFO "?");
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if (uri[i].flags & URI_AUTHORITY)
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g_string_append (grist_gstr, HOST OPT_PORT);
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if (uri[i].flags & URI_PATH)
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{
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char *sep_escaped;
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sep_escaped = g_regex_escape_string (uri[i].path_sep,
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strlen(uri[i].path_sep));
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g_string_append_printf(grist_gstr, "(" "%s" PATH ")?",
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sep_escaped);
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g_free(sep_escaped);
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}
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g_string_append(grist_gstr, ")");
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}
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grist = g_string_free (grist_gstr, FALSE);
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url_ret = make_re (grist, "re_url");
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g_free (scheme);
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return url_ret;
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}
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@ -525,10 +588,10 @@ re_channel (void)
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/* PATH description --- */
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#ifdef WIN32
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/* Windows path can be .\ ..\ or C: D: etc */
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#define PATH "^(\\.{1,2}\\\\|[a-z]:).*"
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#define FS_PATH "^(\\.{1,2}\\\\|[a-z]:).*"
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#else
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/* Linux path can be / or ./ or ../ etc */
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#define PATH "^(/|\\./|\\.\\./).*"
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#define FS_PATH "^(/|\\./|\\.\\./).*"
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#endif
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static GRegex *
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@ -540,8 +603,8 @@ re_path (void)
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if (path_ret) return path_ret;
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grist = g_strdup_printf (
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"(" /* PATH */
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PATH
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"(" /* FS_PATH */
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FS_PATH
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")"
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);
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path_ret = make_re (grist, "re_path");
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