void packet_to_prompt(pamc_bp_t *prompt_p, u_int8_t control,
struct internal_packet *packet)
{
PAM_BP_RENEW(prompt_p, control, packet->at);
PAM_BP_FILL(*prompt_p, 0, packet->at, packet->buffer);
packet->at = 0;
}
int misc_conv(int num_msg, const struct pam_message **msgm,
struct pam_response **response, void *appdata_ptr)
{
int count=0;
struct pam_response *reply;
if (num_msg <= 0)
return PAM_CONV_ERR;
D(("allocating empty response structure array."));
reply = (struct pam_response *) calloc(num_msg,
sizeof(struct pam_response));
if (reply == NULL) {
D(("no memory for responses"));
return PAM_CONV_ERR;
}
D(("entering conversation function."));
for (count=0; count < num_msg; ++count) {
char *string=NULL;
switch (msgm[count]->msg_style) {
case PAM_PROMPT_ECHO_OFF:
string = read_string(CONV_ECHO_OFF,msgm[count]->msg);
if (string == NULL) {
goto failed_conversation;
}
break;
case PAM_PROMPT_ECHO_ON:
string = read_string(CONV_ECHO_ON,msgm[count]->msg);
if (string == NULL) {
goto failed_conversation;
}
break;
case PAM_ERROR_MSG:
if (fprintf(stderr,"%s\n",msgm[count]->msg) < 0) {
goto failed_conversation;
}
break;
case PAM_TEXT_INFO:
if (fprintf(stdout,"%s\n",msgm[count]->msg) < 0) {
goto failed_conversation;
}
break;
case PAM_BINARY_PROMPT:
{
pamc_bp_t binary_prompt = NULL;
if (!msgm[count]->msg || !pam_binary_handler_fn) {
goto failed_conversation;
}
PAM_BP_RENEW(&binary_prompt,
PAM_BP_RCONTROL(msgm[count]->msg),
PAM_BP_LENGTH(msgm[count]->msg));
PAM_BP_FILL(binary_prompt, 0, PAM_BP_LENGTH(msgm[count]->msg),
PAM_BP_RDATA(msgm[count]->msg));
if (pam_binary_handler_fn(appdata_ptr,
&binary_prompt) != PAM_SUCCESS
|| (binary_prompt == NULL)) {
goto failed_conversation;
}
string = (char *) binary_prompt;
binary_prompt = NULL;
break;
}
default:
fprintf(stderr, "erroneous conversation (%d)\n"
,msgm[count]->msg_style);
goto failed_conversation;
}
if (string) { /* must add to reply array */
/* add string to list of responses */
reply[count].resp_retcode = 0;
reply[count].resp = string;
string = NULL;
}
}
/* New (0.59+) behavior is to always have a reply - this is
compatable with the X/Open (March 1997) spec. */
*response = reply;
reply = NULL;
return PAM_SUCCESS;
failed_conversation:
if (reply) {
for (count=0; count<num_msg; ++count) {
if (reply[count].resp == NULL) {
continue;
}
switch (msgm[count]->msg_style) {
case PAM_PROMPT_ECHO_ON:
case PAM_PROMPT_ECHO_OFF:
_pam_overwrite(reply[count].resp);
free(reply[count].resp);
break;
case PAM_BINARY_PROMPT:
pam_binary_handler_free(appdata_ptr,
(pamc_bp_t *) &reply[count].resp);
break;
case PAM_ERROR_MSG:
case PAM_TEXT_INFO:
/* should not actually be able to get here... */
free(reply[count].resp);
}
reply[count].resp = NULL;
}
/* forget reply too */
free(reply);
reply = NULL;
}
return PAM_CONV_ERR;
}
