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add check for NULL conv

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This commit is contained in:
王邈 2016-02-16 20:05:50 +08:00
parent 19631c2efc
commit 2b33aafdb9
1 changed files with 5 additions and 1 deletions
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6
pam_yubico.c
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@ -407,11 +407,15 @@ display_error(pam_handle_t *pamh, const char *message) {
return retval;
}
if(!conv || !conv->conv){
D(("conv() function invalid"));
return PAM_CONV_ERR;
}
pmsg[0] = &msg[0];
msg[0].msg = (char *) message; /* on some systems, pam_message.msg isn't const */
msg[0].msg_style = PAM_ERROR_MSG;
retval = conv->conv(1, pmsg, &resp, conv->appdata_ptr);
if (retval != PAM_SUCCESS) {
D(("conv returned error: %s", pam_strerror (pamh, retval)));
return retval;