* This file is licenced under the 3-clause BSD Licence. See the file
* COPYING for full details.
*/
+#define DEBUG 1
+#define USE_POPEN 0
+
#include "common.h"
#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include <sys/stat.h>
#include <fcntl.h>
+#include <signal.h>
+#if !USE_POPEN
+# include <unistd.h>
+#endif
#define DOOR_UNLOCKED_DELAY 10 // 10 seconds before it re-locks
Door_CanDispense,
Door_DoDispense
};
-char *gsDoor_Password;
-char *gsDoor_Command;
-// int giDoor_SerialFD;
+char *gsDoor_Password = "";
// == CODE ===
int Door_InitHandler(void)
-{
- gsDoor_Command = malloc(sizeof("llogin door -w ")+strlen(gsDoor_Password));
- sprintf(gsDoor_Command, "llogin door -w %s", gsDoor_Password);
-
+{
return 0;
}
*/
int Door_CanDispense(int User, int Item)
{
+ #if DEBUG
+ printf("Door_CanDispense: (User=%i,Item=%i)\n", User, Item);
+ #endif
// Sanity please
- if( Item == 0 ) return -1;
+ if( Item != 0 ) return -1;
if( !(Bank_GetFlags(User) & USER_FLAG_DOORGROUP) )
+ {
+ #if DEBUG
+ printf("Door_CanDispense: User %i not in door\n", User);
+ #endif
return 1;
+ }
+
+ #if DEBUG
+ printf("Door_CanDispense: User %i can open the door\n", User);
+ #endif
return 0;
}
*/
int Door_DoDispense(int User, int Item)
{
- FILE *pipe;
+ FILE *child_stdin;
+ char buf[512];
+ #if !USE_POPEN
+ int stdin_pair[2];
+ int stdout_pair[2];
+ pid_t childPid;
+ #endif
+
+ #if DEBUG
+ printf("Door_DoDispense: (User=%i,Item=%i)\n", User, Item);
+ #endif
+
// Sanity please
if( Item != 0 ) return -1;
// Check if user is in door
if( !(Bank_GetFlags(User) & USER_FLAG_DOORGROUP) )
+ {
+ #if DEBUG
+ printf("Door_CanDispense: User %i not in door\n", User);
+ #endif
return 1;
+ }
+
+ #if !USE_POPEN
+ // Create stdin/stdout
+ if( pipe(stdin_pair) || pipe(stdout_pair) )
+ {
+ perror("pipe");
+ return -1;
+ }
+
+ childPid = fork();
+
+ if( childPid < 0 )
+ {
+ perror("fork");
+ return -1;
+ }
+ // Child process
+ if( childPid == 0 )
+ {
+ // Close write end of stdin, and set it to #0
+ close(stdin_pair[1]); dup2(stdin_pair[0], 0);
+ // Close read end of stdout, and set it to #1
+ close(stdout_pair[0]); dup2(stdout_pair[1], 1);
+
+ execl("/bin/sh", "sh", "-c", "llogin door -w-", NULL);
+ perror("execl");
+ exit(-1);
+ }
+
+ child_stdin = fdopen(stdin_pair[1], "w");
+ close(stdin_pair[0]); // child stdin read
+ close(stdout_pair[1]); // child stdout write
+
+ #else
// llogin or other
- //pipe = popen(gsDoor_Command, "w");
- pipe = popen("llogin door -w -", "w");
- if( !pipe || pipe == (void*)-1 )
+ child_stdin = popen("llogin door -w -", "w");
+ if( !child_stdin || child_stdin == (void*)-1 ) {
+ #if DEBUG
+ printf("Door_DoDispense: llogin failure\n");
+ #endif
return -1;
+ }
+ #endif
- fputs(gsDoor_Password, pipe); fputs("\n", pipe);
- fputs("ATH1\n", pipe);
+ if(fread(buf, 1, 512, child_stdin) == 0) {
+ #if DEBUG
+ printf("Door_DoDispense: fread fail\n");
+ #endif
+ return -1;
+ }
+
+ // Send password
+ if( fputs(gsDoor_Password, child_stdin) <= 0 ) {
+ #if DEBUG
+ printf("Door_DoDispense: fputs password\n");
+ #endif
+ return -1;
+ }
+ fputs("\n", child_stdin);
+
+
+ #if DEBUG
+ printf("Door_DoDispense: Door unlock\n");
+ #endif
+
+ // ATH1 - Unlock door
+ if( fputs("ATH1\n", child_stdin) <= 0) {
+ #if DEBUG
+ printf("Door_DoDispense: fputs unlock\n");
+ #endif
+ return -1;
+ }
+
+ // Wait before re-locking
sleep(DOOR_UNLOCKED_DELAY);
- fputs("ATH0\n", pipe);
+
+
+ #if DEBUG
+ printf("Door_DoDispense: Door re-lock\n");
+ #endif
+
+ // Re-lock the door
+ if( fputs("ATH0\n", child_stdin) <= 0 ) {
+ #if DEBUG
+ printf("Door_DoDispense: fputs lock\n");
+ #endif
+ return -1;
+ }
+
+ #if !USE_POPEN
+ fclose(child_stdin);
+ close(stdin_pair[1]); // child stdin write
+ close(stdout_pair[0]); // child stdout read
+ #else
+ pclose(child_stdin);
+ #endif
- pclose(pipe);
+ #if DEBUG
+ printf("Door_DoDispense: User %i opened door\n", User);
+ #endif
return 0;
}
-