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Implement PAM password verification in swaylock

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This commit is contained in:
Drew DeVault 2015-12-17 08:44:30 -05:00
parent 18819d56e7
commit d3fc6f8f77
2 changed files with 36 additions and 0 deletions
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2
CMakeLists.txt
View File

@ -4,6 +4,7 @@ include_directories(
${CAIRO_INCLUDE_DIRS}
${GDK_PIXBUF_INCLUDE_DIRS}
${PANGO_INCLUDE_DIRS}
${PAM_INCLUDE_DIRS}
)
add_executable(swaylock
@ -18,6 +19,7 @@ target_link_libraries(swaylock
${CAIRO_LIBRARIES}
${GDK_PIXBUF_LIBRARIES}
${PANGO_LIBRARIES}
${PAM_LIBRARIES}
m
)

34
main.c
View File

@ -1,4 +1,5 @@
#include "wayland-swaylock-client-protocol.h"
#include <security/pam_appl.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
@ -29,6 +30,39 @@ void sway_terminate(void) {
exit(EXIT_FAILURE);
}
struct pam_response *pam_reply;
int function_conversation(int num_msg, const struct pam_message **msg,
struct pam_response **resp, void *appdata_ptr) {
*resp = pam_reply;
return PAM_SUCCESS;
}
/**
* password will be zeroed out.
*/
bool verify_password(const char *username, char *password) {
const struct pam_conv local_conversation = { function_conversation, NULL };
pam_handle_t *local_auth_handle = NULL;
int pam_err;
if ((pam_err = pam_start("swaylock", username, &local_conversation, &local_auth_handle)) != PAM_SUCCESS) {
sway_abort("PAM returned %d\n", pam_err);
}
pam_reply = (struct pam_response *)malloc(sizeof(struct pam_response));
pam_reply[0].resp = password;
pam_reply[0].resp_retcode = 0;
if ((pam_err = pam_authenticate(local_auth_handle, 0)) != PAM_SUCCESS) {
memset(password, 0, strlen(password));
return false;
}
if ((pam_err = pam_end(local_auth_handle, pam_err)) != PAM_SUCCESS) {
memset(password, 0, strlen(password));
return false;
}
memset(password, 0, strlen(password));
return true;
}
void notify_key(enum wl_keyboard_key_state state, xkb_keysym_t sym, uint32_t code, uint32_t codepoint) {
sway_log(L_INFO, "notified of key %c", (char)codepoint);
}