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wpa_supplicant: Convert SSID into printable form before printing

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SSID may include unprintable characters. This change converts
unprintable characters into printable form before printing SSID in the
function wpas_send_ctrl_req(). The conversion is based on the function
wpa_ssid_txt().

Signed-off-by: Kaidong Wang <kaidong@chromium.org>
This commit is contained in:
Kaidong Wang 2022-06-15 19:55:43 +00:00 • committed by Jouni Malinen
parent 4163860605
commit 87ffa1bec6
1 changed files with 3 additions and 22 deletions
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25
wpa_supplicant/wpas_glue.c
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@ -942,28 +942,9 @@ const char * wpa_supplicant_ctrl_req_to_string(enum wpa_ctrl_req_type field,
void wpas_send_ctrl_req(struct wpa_supplicant *wpa_s, struct wpa_ssid *ssid,
const char *field_name, const char *txt)
{
char *buf;
size_t buflen;
int len;
buflen = 100 + os_strlen(txt) + ssid->ssid_len;
buf = os_malloc(buflen);
if (buf == NULL)
return;
len = os_snprintf(buf, buflen, "%s-%d:%s needed for SSID ",
field_name, ssid->id, txt);
if (os_snprintf_error(buflen, len)) {
os_free(buf);
return;
}
if (ssid->ssid && buflen > len + ssid->ssid_len) {
os_memcpy(buf + len, ssid->ssid, ssid->ssid_len);
len += ssid->ssid_len;
buf[len] = '\0';
}
buf[buflen - 1] = '\0';
wpa_msg(wpa_s, MSG_INFO, WPA_CTRL_REQ "%s", buf);
os_free(buf);
wpa_msg(wpa_s, MSG_INFO, WPA_CTRL_REQ "%s-%d:%s needed for SSID %s",
field_name, ssid->id, txt,
wpa_ssid_txt(ssid->ssid, ssid->ssid_len));
}