Resolving linking errors

Makefile

@@ -11,14 +11,15 @@ all:
 	@which reboot >/dev/null
 	@which poweroff >/dev/null
 	@which cryptsetup >/dev/null
-	mkdir -p build obj
+	mkdir -p build
 	make -C src -e "PPASSFILE = $(PPASSFILE)"
 	@printf "Done!\n"
+
 clean:
 	rm build/pam_panic.so
 	rm build/pam_panic_pw
-	rm obj/pam_panic.o
-	rmdir build obj
+	make -C src/pam_panic clean
+	rmdir build
 	@printf "Done!\n"
 
 detect_pamdir: 

src/pam_panic/Makefile

@@ -1,9 +1,25 @@
-CFLAGS = --std=gnu11 -O2 -fPIC -DPOWEROFF=\"`which poweroff`\" -DREBOOT=\"`which reboot`\" -DCRYPTSETUP=\"`which cryptsetup`\" -DPPASSFILE=\"$(PPASSFILE)\"
-LDFLAGS = -x --shared -lcrypt
+CFLAGS = -Wall --std=gnu11 -O2 -fPIC -DPOWEROFF=\"`which poweroff`\" -DREBOOT=\"`which reboot`\" -DCRYPTSETUP=\"`which cryptsetup`\" -DPPASSFILE=\"$(PPASSFILE)\" 
+#LDFLAGS = -x -shared -lcrypt -lpam -lpam_misc
+LDFLAGS = -shared -lcrypt -lpam -lpam_misc
+
+
+OBJ = pam_panic_authdevice.o pam_panic_password.o pam_panic_reject.o
+
+
+pam_panic: $(OBJ)
+	cc $(CFLAGS) $(LDFLAGS) -o ../../build/pam_panic.so pam_panic.c $(OBJ)
+#	ld $(LDFLAGS) -o ../../build/pam_panic.so $(OBJ)
+
+%.o: %.c
+	$(CC) $(CFLAGS) -c -o $@ $<
 
 all: 
-	mkdir -p ../../obj
 	mkdir -p ../../build
-	cc $(CFLAGS) -c pam_panic.c -o ../../obj/pam_panic.o
-	ld $(LDFLAGS) -o ../../build/pam_panic.so ../../obj/pam_panic.o
+
+clean:
+	rm *.o
+	
+
+#	cc $(CFLAGS) -c pam_panic.c -o ../../obj/pam_panic.o
+#	ld $(LDFLAGS) -o ../../build/pam_panic.so ../../obj/pam_panic.o
 

src/pam_panic/pam_panic.c

@@ -25,6 +25,18 @@ LICENSE :      GNU-GPLv3
 #ifdef POWEROFF
 #ifdef CRYPTSETUP
 
+int makeRegex(pam_handle_t *pamh, regex_t *regex){
+  char *pattern = "^[A-Fa-f0-9]\\{8\\}\\-[A-Fa-f0-9]\\{4\\}\\-[A-Fa-f0-9]\\{4\\}\\-[A-Fa-f0-9]\\{4\\}\\-[A-Fa-f0-9]\\{12\\}$";
+
+  if(regcomp(regex, pattern, 0)){
+    pam_syslog(pamh, LOG_CRIT, "ERROR: Problem with regcomp.");
+    return 1;
+  }
+  
+  return 0;
+
+}
+
 void argSplit(char **some_arg, char **some_temp, const char *arg){
   strncpy(*some_arg, arg, 128);
   *some_temp = strtok(*some_arg, "=");
@@ -56,13 +68,9 @@ PAM_EXTERN int pam_sm_authenticate(pam_handle_t *pamh, int flags,	int argc, cons
 
 
   // Regex for checking arguments
-  char *pattern = "^[A-Fa-f0-9]\\{8\\}\\-[A-Fa-f0-9]\\{4\\}\\-[A-Fa-f0-9]\\{4\\}\\-[A-Fa-f0-9]\\{4\\}\\-[A-Fa-f0-9]\\{12\\}$";
   regex_t regex;
-
-  if(regcomp(&regex, pattern, 0)){
-    pam_syslog(pamh, LOG_CRIT, "ERROR: Problem with regcomp.");
+  if(makeRegex(pamh, &regex))
     return (PAM_IGNORE);
-  }
 
 
   // Argument handling

src/pam_panic/pam_panic_authdevice.c

@@ -6,6 +6,14 @@ DATE :         2018-03-27T02:34:08+02:00
 LICENSE :      GNU-GPLv3
 */
 
+#include <stdint.h>
+#include <unistd.h>
+#include <security/pam_modules.h>
+#include <security/pam_ext.h>
+#include <syslog.h>
+#include "pam_panic_reject.h"
+
+#include "pam_panic_authdevice.h"
 
 int authDevice(pam_handle_t *pamh, char *allowed, char *rejected, char *serious_dev, int8_t bSerious, int8_t bReboot, int8_t bPoweroff){
 
@@ -23,4 +31,6 @@ int authDevice(pam_handle_t *pamh, char *allowed, char *rejected, char *serious_
   if(access(rejected, F_OK) != -1)
     return reject(serious_dev, bSerious, bReboot, bPoweroff);
 
+  return (PAM_MAXTRIES);
+
 }

src/pam_panic/pam_panic_authdevice.h

@@ -6,7 +6,6 @@ LICENSE :      GNU-GPLv3
 */
 
 
-
 #define ASK "Please enter your secret key to decrypt the firewall and access the mainframe. "
 
 int authDevice(pam_handle_t *pamh, char *allowed, char *rejected, char *serious_dev, int8_t bSerious, int8_t bReboot, int8_t bPoweroff);

src/pam_panic/pam_panic_password.c

@@ -6,6 +6,17 @@ DATE :         2018-03-27T02:34:08+02:00
 LICENSE :      GNU-GPLv3
 */
 
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <security/pam_modules.h>
+#include <security/pam_ext.h>
+#include <syslog.h>
+#include <crypt.h>
+#include "pam_panic_password.h"
+#include "pam_panic_reject.h"
 
 
 int readPassword(pam_handle_t *pamh, char pw[2][99]){
@@ -24,7 +35,6 @@ int readPassword(pam_handle_t *pamh, char pw[2][99]){
   // Get file contents
   size_t nread;
   char filecontent[198];
-  char chr;
 
   nread = fread(filecontent, sizeof(char), 198, f);
   fclose(f);

src/pam_panic/pam_panic_password.h

@@ -5,8 +5,6 @@ DATE :         2018-03-27T02:34:08+02:00
 LICENSE :      GNU-GPLv3
 */
 
-#include <crypt.h>
-
 #ifndef PPASSFILE
   #error PPASSFILE must be declared!
 #endif

src/pam_panic/pam_panic_reject.c

@@ -6,6 +6,11 @@ DATE :         2018-03-27T02:34:08+02:00
 LICENSE :      GNU-GPLv3
 */
 
+#include <stdint.h>
+#include <unistd.h>
+#include <security/pam_ext.h>
+#include <sys/wait.h>
+#include "pam_panic_reject.h"
 
 int reject(char *serious_dev, int8_t bSerious, int8_t bReboot, int8_t bPoweroff){
   if(bSerious){