diff options
| -rw-r--r-- | source3/web/swat.c | 25 |
1 files changed, 19 insertions, 6 deletions
diff --git a/source3/web/swat.c b/source3/web/swat.c index b3589568292..85bc6bcd641 100644 --- a/source3/web/swat.c +++ b/source3/web/swat.c @@ -192,16 +192,29 @@ bool verify_xsrf_token(const char *formname) const char *pass = cgi_user_pass(); const char *token = cgi_variable_nonull(XSRF_TOKEN); const char *time_str = cgi_variable_nonull(XSRF_TIME); + char *p = NULL; + long long xsrf_time_ll = 0; time_t xsrf_time = 0; time_t now = time(NULL); - if (sizeof(time_t) == sizeof(int)) { - xsrf_time = atoi(time_str); - } else if (sizeof(time_t) == sizeof(long)) { - xsrf_time = atol(time_str); - } else if (sizeof(time_t) == sizeof(long long)) { - xsrf_time = atoll(time_str); + errno = 0; + xsrf_time_ll = strtoll(time_str, &p, 10); + if (errno != 0) { + return false; + } + if (p == NULL) { + return false; + } + if (PTR_DIFF(p, time_str) > strlen(time_str)) { + return false; + } + if (xsrf_time_ll > _TYPE_MAXIMUM(time_t)) { + return false; + } + if (xsrf_time_ll < _TYPE_MINIMUM(time_t)) { + return false; } + xsrf_time = xsrf_time_ll; if (abs(now - xsrf_time) > XSRF_TIMEOUT) { return false; |