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UID/EUID: Check that the UID starts with the server's SID.

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If not, the local link that sent the command is broken, as with
syntactically invalid UIDs.
This commit is contained in:
Jilles Tjoelker 2013-02-03 19:38:46 +01:00
parent 9cbf72447c
commit 561d7efc44
1 changed files with 7 additions and 4 deletions
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11
modules/core/m_nick.c
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@ -94,7 +94,7 @@ static int change_remote_nick(struct Client *, struct Client *, time_t,
static int clean_nick(const char *, int loc_client); static int clean_nick(const char *, int loc_client);
static int clean_username(const char *); static int clean_username(const char *);
static int clean_host(const char *); static int clean_host(const char *);
static int clean_uid(const char *uid); static int clean_uid(const char *uid, const char *sid);
static void set_initial_nick(struct Client *client_p, struct Client *source_p, char *nick); static void set_initial_nick(struct Client *client_p, struct Client *source_p, char *nick);
static void change_local_nick(struct Client *client_p, struct Client *source_p, char *nick, int); static void change_local_nick(struct Client *client_p, struct Client *source_p, char *nick, int);
@ -362,7 +362,7 @@ ms_uid(struct Client *client_p, struct Client *source_p, int parc, const char *p
return 0; return 0;
} }
if(!clean_uid(parv[8])) if(!clean_uid(parv[8], source_p->id))
{ {
rb_snprintf(squitreason, sizeof squitreason, rb_snprintf(squitreason, sizeof squitreason,
"Invalid UID %s for nick %s on %s", "Invalid UID %s for nick %s on %s",
@ -453,7 +453,7 @@ ms_euid(struct Client *client_p, struct Client *source_p, int parc, const char *
return 0; return 0;
} }
if(!clean_uid(parv[8])) if(!clean_uid(parv[8], source_p->id))
{ {
rb_snprintf(squitreason, sizeof squitreason, rb_snprintf(squitreason, sizeof squitreason,
"Invalid UID %s for nick %s on %s", "Invalid UID %s for nick %s on %s",
@ -623,10 +623,13 @@ clean_host(const char *host)
} }
static int static int
clean_uid(const char *uid) clean_uid(const char *uid, const char *sid)
{ {
int len = 1; int len = 1;
if(strncmp(uid, sid, strlen(sid)))
return 0;
if(!IsDigit(*uid++)) if(!IsDigit(*uid++))
return 0; return 0;