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Authored by lpapp on Feb 25 2019, 12:14 PM.
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <security/pam_appl.h>
static int converse(int n, const struct pam_message **msg,
struct pam_response **resp, void *data)
{
struct pam_response *aresp;
char buf[PAM_MAX_RESP_SIZE];
int i;
if (n <= 0 || n > PAM_MAX_NUM_MSG)
return (PAM_CONV_ERR);
if ((aresp = calloc(n, sizeof *aresp)) == NULL)
return (PAM_BUF_ERR);
for (i = 0; i < n; ++i)
{
aresp[i].resp_retcode = 0;
aresp[i].resp = NULL;
switch (msg[i]->msg_style)
{
case PAM_PROMPT_ECHO_OFF:
aresp[i].resp = strdup("root"); // getpass(msg[i]->msg));
if (aresp[i].resp == NULL)
goto fail;
break;
case PAM_PROMPT_ECHO_ON:
fputs(msg[i]->msg, stderr);
if (fgets(buf, sizeof buf, stdin) == NULL)
goto fail;
aresp[i].resp = strdup(buf);
if (aresp[i].resp == NULL)
goto fail;
break;
case PAM_ERROR_MSG:
fputs(msg[i]->msg, stderr);
if (strlen(msg[i]->msg) > 0 &&
msg[i]->msg[strlen(msg[i]->msg) - 1] != '\n')
fputc('\n', stdout);
break;
case PAM_TEXT_INFO:
fputs(msg[i]->msg, stdout);
if (strlen(msg[i]->msg) > 0 &&
msg[i]->msg[strlen(msg[i]->msg) - 1] != '\n')
fputc('\n', stdout);
break;
default:
goto fail;
}
}
*resp = aresp;
return (PAM_SUCCESS);
fail:
for (i = 0; i < n; ++i)
{
if (aresp[i].resp != NULL)
{
memset(aresp[i].resp, 0, strlen(aresp[i].resp));
free(aresp[i].resp);
}
}
memset(aresp, 0, n * sizeof *aresp);
*resp = NULL;
return (PAM_CONV_ERR);
}
int main()
{
pam_handle_t *pamh;
struct pam_conv pamc;
pamc.conv = converse;
int rc = pam_start("pamapp", "admin", &pamc, &pamh);
if (rc != PAM_SUCCESS)
{
printf("Failed to init PAM (%s)\n", pam_strerror(pamh, rc));
return EXIT_FAILURE;
}
char buff[256];
gethostname(buff, sizeof(buff));
rc = pam_set_item(pamh, PAM_RUSER, "admin");
rc = pam_set_item(pamh, PAM_RHOST, strdup(buff));
if (rc != PAM_SUCCESS)
printf("Failed to set items: %s (%d)\n", pam_strerror(pamh, rc), rc);
rc = pam_authenticate(pamh, 0);
if (rc != PAM_SUCCESS)
{
printf("Failed to authenticate: %s (%d)\n", pam_strerror(pamh, rc), rc);
if (rc == PAM_MODULE_UNKNOWN)
printf("Are 32 bit modules installed? (apt-get install libpam-modules:i386)");
}
pam_end(pamh, rc);
return rc != PAM_SUCCESS;
}
lpapp created this paste.Feb 25 2019, 12:14 PM
lpapp created this object in space S1 KDE Community.