Adding secret password patch

README.md

@@ -26,7 +26,7 @@ slock tool, how to install it and how it works.
 
 ### Changelog:
 
-2021-09-09 - Added the failure-command patch
+2021-09-09 - Added the failure-command and secret-password patches
 
 2021-06-08 - Added the color message patch
 
@@ -88,6 +88,9 @@ slock tool, how to install it and how it works.
       - this can be useful if you forgot to disable xautolock during an activity that requires no
         input (e.g. reading text, watching video, etc.)
 
+   - [secret-password](https://tools.suckless.org/slock/patches/secret-password/)
+      - allows for commands to be executed when the user enters special passwords
+
    - [terminalkeys](https://tools.suckless.org/slock/patches/terminalkeys/)
       - adds key commands that are commonly used in terminal applications (in particular the login
         prompt)

config.def.h

@@ -65,6 +65,13 @@ static const int failcount = 0;
 static const char *failcommand = "shutdown";
 #endif // FAILURE_COMMAND_PATCH
 
+#if SECRET_PASSWORD_PATCH
+static const secretpass scom[] = {
+	/* Password             command */
+	{ "shutdown",           "doas poweroff"},
+};
+#endif // SECRET_PASSWORD_PATCH
+
 #if BLUR_PIXELATED_SCREEN_PATCH
 /* Enable blur */
 #define BLUR

patches.def.h

@@ -102,6 +102,11 @@
  */
 #define QUICKCANCEL_PATCH 0
 
+/* This patch allows for commands to be executed when the user enters special passwords.
+ * https://tools.suckless.org/slock/patches/secret-password/
+ */
+#define SECRET_PASSWORD_PATCH 0
+
 /* Adds key commands that are commonly used in terminal applications (in particular the
  * login prompt) to slock.
  * https://tools.suckless.org/slock/patches/terminalkeys/

slock.c

@@ -1,5 +1,6 @@
 /* See LICENSE file for license details. */
 #define _XOPEN_SOURCE 500
+#define LENGTH(X) (sizeof X / sizeof X[0])
 #if HAVE_SHADOW_H
 #include <shadow.h>
 #endif
@@ -77,6 +78,14 @@ struct lock {
 	unsigned long colors[NUMCOLS];
 };
 
+#if SECRET_PASSWORD_PATCH
+typedef struct secretpass secretpass;
+struct secretpass {
+	char *pass;
+	char *command;
+};
+#endif // SECRET_PASSWORD_PATCH
+
 struct xrandr {
 	int active;
 	int evbase;
@@ -245,6 +254,18 @@ readpw(Display *dpy, struct xrandr *rr, struct lock **locks, int nscreens,
 			case XK_Return:
 				passwd[len] = '\0';
 				errno = 0;
+
+				#if SECRET_PASSWORD_PATCH
+				for (int i = 0; i < LENGTH(scom); i++) {
+					if (strcmp(scom[i].pass, passwd) == 0) {
+						system(scom[i].command);
+						#if FAILURE_COMMAND_PATCH
+						failtrack = -1;
+						#endif // FAILURE_COMMAND_PATCH
+					}
+				}
+				#endif // SECRET_PASSWORD_PATCH
+
 				#if PAMAUTH_PATCH
 				retval = pam_start(pam_service, hash, &pamc, &pamh);
 				color = PAM;