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Merge pull request #700 from orium/url-chan-prefix 

Server aware nickname and channel matching
This commit is contained in:
TingPing 2013-08-02 23:24:50 -07:00
parent bca0ad8e1e 61c9ad08bf
commit ce40e5a111
1 changed files with 144 additions and 94 deletions
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238
src/common/url.c
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@ -32,15 +32,22 @@
void *url_tree = NULL;
GTree *url_btree = NULL;
static int do_an_re (const char *word, int *start, int *end, int *type);
static GRegex *re_url (void);
static GRegex *re_host (void);
static GRegex *re_host6 (void);
static GRegex *re_email (void);
static GRegex *re_nick (void);
static GRegex *re_channel (void);
static GRegex *re_path (void);
static gboolean regex_match (const GRegex *re, const char *word,
int *start, int *end);
static const GRegex *re_url (void);
static const GRegex *re_host (void);
static const GRegex *re_host6 (void);
static const GRegex *re_email (void);
static const GRegex *re_nick (void);
static const GRegex *re_channel (void);
static const GRegex *re_path (void);
static gboolean match_nick (const char *word, int *start, int *end);
static gboolean match_channel (const char *word, int *start, int *end);
static gboolean match_email (const char *word, int *start, int *end);
static gboolean match_url (const char *word, int *start, int *end);
static gboolean match_host (const char *word, int *start, int *end);
static gboolean match_host6 (const char *word, int *start, int *end);
static gboolean match_path (const char *word, int *start, int *end);
static int
url_free (char *url, void *data)
@ -189,50 +196,111 @@ static int laststart = 0;
static int lastend = 0;
static int lasttype = 0;
static int
strchrs (char c, char *s)
{
while (*s)
if (c == *s++)
return TRUE;
return FALSE;
}
#define NICKPRE "~+!@%&"
#define CHANPRE "#&!+"
#define NICKPRE "~+!@%%&"
int
url_check_word (const char *word)
{
laststart = lastend = lasttype = 0;
if (do_an_re (word, &laststart, &lastend, &lasttype))
{
switch (lasttype)
{
char *str;
struct {
gboolean (*match) (const char *word, int *start, int *end);
int type;
} m[] = {
{ match_url, WORD_URL },
{ match_email, WORD_EMAIL },
{ match_nick, WORD_NICK },
{ match_channel, WORD_CHANNEL },
{ match_host6, WORD_HOST6 },
{ match_host, WORD_HOST },
{ match_path, WORD_PATH },
{ NULL, 0}
};
int i;
case WORD_NICK:
if (strchrs (word[laststart], NICKPRE))
laststart++;
str = g_strndup (&word[laststart], lastend - laststart);
if (!userlist_find (current_sess, str))
lasttype = 0;
g_free (str);
return lasttype;
case WORD_EMAIL:
if (!isalnum (word[laststart]))
laststart++;
/* Fall through */
case WORD_URL:
case WORD_HOST:
case WORD_HOST6:
case WORD_CHANNEL:
case WORD_PATH:
return lasttype;
default:
return 0; /* Should not occur */
laststart = lastend = lasttype = 0;
for (i = 0; m[i].match; i++)
if (m[i].match (word, &laststart, &lastend))
{
lasttype = m[i].type;
return lasttype;
}
return 0;
}
static gboolean
match_nick (const char *word, int *start, int *end)
{
const server *serv = current_sess->server;
const char *nick_prefixes = serv ? serv->nick_prefixes : NICKPRE;
char *str;
if (!regex_match (re_nick (), word, start, end))
return FALSE;
/* ignore matches with prefixes that the server doesn't use */
if (strchr (NICKPRE, word[*start])
&& !strchr (nick_prefixes, word[*start]))
return FALSE;
/* nick prefix is not part of the matched word */
if (strchr (nick_prefixes, word[*start]))
(*start)++;
str = g_strndup (&word[*start], *end - *start);
if (!userlist_find (current_sess, str))
{
g_free (str);
return FALSE;
}
else
return 0;
g_free (str);
return TRUE;
}
static gboolean
match_channel (const char *word, int *start, int *end)
{
const server *serv = current_sess->server;
const char *chan_prefixes = serv ? serv->chantypes : CHANPRE;
if (!regex_match (re_channel (), word, start, end))
return FALSE;
return strchr (chan_prefixes, word[*start]) != NULL;
}
static gboolean
match_email (const char *word, int *start, int *end)
{
return regex_match (re_email (), word, start, end);
}
static gboolean
match_url (const char *word, int *start, int *end)
{
return regex_match (re_url (), word, start, end);
}
static gboolean
match_host (const char *word, int *start, int *end)
{
return regex_match (re_host (), word, start, end);
}
static gboolean
match_host6 (const char *word, int *start, int *end)
{
return regex_match (re_host6 (), word, start, end);
}
static gboolean
match_path (const char *word, int *start, int *end)
{
return regex_match (re_path (), word, start, end);
}
/* List of IRC commands for which contents (and thus possible URLs)
@ -307,46 +375,28 @@ url_last (int *lstart, int *lend)
return lasttype;
}
static int
do_an_re(const char *word, int *start, int *end, int *type)
static gboolean
regex_match (const GRegex *re, const char *word, int *start, int *end)
{
typedef struct func_s {
GRegex *(*fn)(void);
int type;
} func_t;
func_t funcs[] =
{
{ re_url, WORD_URL },
{ re_email, WORD_EMAIL },
{ re_channel, WORD_CHANNEL },
{ re_host6, WORD_HOST6 },
{ re_host, WORD_HOST },
{ re_path, WORD_PATH },
{ re_nick, WORD_NICK }
};
GMatchInfo *gmi;
int k;
for (k = 0; k < sizeof funcs / sizeof (func_t); k++)
g_regex_match (re, word, 0, &gmi);
if (!g_match_info_matches (gmi))
{
g_regex_match (funcs[k].fn(), word, 0, &gmi);
if (!g_match_info_matches (gmi))
{
g_match_info_free (gmi);
continue;
}
while (g_match_info_matches (gmi))
{
g_match_info_fetch_pos (gmi, 0, start, end);
g_match_info_next (gmi, NULL);
}
g_match_info_free (gmi);
*type = funcs[k].type;
return TRUE;
return FALSE;
}
return FALSE;
while (g_match_info_matches (gmi))
{
g_match_info_fetch_pos (gmi, 0, start, end);
g_match_info_next (gmi, NULL);
}
g_match_info_free (gmi);
return TRUE;
}
/* Miscellaneous description --- */
@ -376,7 +426,7 @@ make_re (char *grist)
/* HOST description --- */
/* (see miscellaneous above) */
static GRegex *
static const GRegex *
re_host (void)
{
static GRegex *host_ret;
@ -384,7 +434,7 @@ re_host (void)
if (host_ret) return host_ret;
grist = g_strdup_printf (
grist = g_strdup (
"("
"(" HOST_URL PORT ")|(" HOST ")"
")"
@ -393,7 +443,7 @@ re_host (void)
return host_ret;
}
static GRegex *
static const GRegex *
re_host6 (void)
{
static GRegex *host6_ret;
@ -401,7 +451,7 @@ re_host6 (void)
if (host6_ret) return host6_ret;
grist = g_strdup_printf (
grist = g_strdup (
"("
"(" IPV6ADDR ")|(" "\\[" IPV6ADDR "\\]" PORT ")"
")"
@ -489,7 +539,7 @@ struct
{ NULL, "", 0}
};
static GRegex *
static const GRegex *
re_url (void)
{
static GRegex *url_ret = NULL;
@ -546,7 +596,7 @@ re_url (void)
/* EMAIL description --- */
#define EMAIL "[a-z][-_a-z0-9]+@" "(" HOST_URL ")"
static GRegex *
static const GRegex *
re_email (void)
{
static GRegex *email_ret;
@ -554,7 +604,7 @@ re_email (void)
if (email_ret) return email_ret;
grist = g_strdup_printf (
grist = g_strdup (
"("
EMAIL
")"
@ -582,7 +632,7 @@ re_email (void)
#define NICK1 "[" NICKHYP NICKLET NICKDIG NICKSPE "]*"
#define NICK NICK0 NICK1
static GRegex *
static const GRegex *
re_nick (void)
{
static GRegex *nick_ret;
@ -590,7 +640,7 @@ re_nick (void)
if (nick_ret) return nick_ret;
grist = g_strdup_printf (
grist = g_strdup (
"("
NICK
")"
@ -600,9 +650,9 @@ re_nick (void)
}
/* CHANNEL description --- */
#define CHANNEL "#[^ \t\a,:]+"
#define CHANNEL "[" CHANPRE "][^ \t\a,:]+"
static GRegex *
static const GRegex *
re_channel (void)
{
static GRegex *channel_ret;
@ -610,7 +660,7 @@ re_channel (void)
if (channel_ret) return channel_ret;
grist = g_strdup_printf (
grist = g_strdup (
"("
CHANNEL
")"
@ -628,7 +678,7 @@ re_channel (void)
#define FS_PATH "^(/|\\./|\\.\\./).*"
#endif
static GRegex *
static const GRegex *
re_path (void)
{
static GRegex *path_ret;
@ -636,7 +686,7 @@ re_path (void)
if (path_ret) return path_ret;
grist = g_strdup_printf (
grist = g_strdup (
"("
FS_PATH
")"