1 files changed, 256 insertions, 0 deletions
diff --git a/src/implementation.c b/src/implementation.c
new file mode 100644
index 0000000..3ba2be7
--- /dev/null
+++ b/src/implementation.c
@@ -0,0 +1,256 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <termios.h>
+#include <string.h>
+#include <time.h>
+#include <errno.h>
+
+#include "handerror.h"
+#include "easydir.h"
+#include "implementation.h"
+
+/* define in implementation.h */
+// GPG_PUBLICKEY_MAXLENGTH 1025
+
+#define BASH_EXEC_COPY "lpass_copy.sh"
+
+// == global var == 
+extern char *gPath_rootdir; // /home/[username]/.lockpassword/
+extern char *gPath_subdir; // example: programming/github.com
+extern char *gPath_pass; // example: programming/github.com/joursoir.gpg
+
+static void copyText(char *password)
+{
+	size_t size = (strlen(password) + strlen(BASH_EXEC_COPY) + 1) * sizeof(char);
+	char *command = malloc(size);
+
+	snprintf(command, size, "%s %s", BASH_EXEC_COPY, password);
+	system(command);
+
+	free(command);
+}
+
+void checkForbiddenPaths(char *path) // check two dot in path
+{
+	int firstdot = 0;
+	for(int i=0; i < strlen(path); i++)
+	{
+		if(path[i] == '.')
+			firstdot ? printError("Error: please, don't use forbidden paths\n") : firstdot++;
+		else firstdot = 0;
+	}
+}
+
+char *getGPGKey(char *dest, size_t size)
+{
+	FILE *fileGPG = fopen(".gpg-key", "r");
+	if(fileGPG == NULL) {
+		if(errno == ENOENT) printError("error: No GPG key exists\n");
+		callError(121);
+	}
+
+	if(!fgets(dest, size, fileGPG)) {
+		callError(122);
+	}
+	fclose(fileGPG);
+
+	return dest;
+}
+
+char* getPassword(char *path_pass, char *password, size_t size, int flag_copy)
+{
+	int size_gpgkey = sizeof(char) * GPG_PUBLICKEY_MAXLENGTH;
+	char *secret_gpgkey = (char *) malloc(size_gpgkey);
+	getGPGKey(secret_gpgkey, size_gpgkey);
+
+	char *arguments[] = {"gpg", "-d", "--quiet", "-r", secret_gpgkey, "-o", path_pass, gPath_pass, NULL};
+	easyFork("gpg", arguments);
+
+	FILE *filePass = fopen(path_pass, "r");
+	if(filePass == NULL) callError(127);
+
+	if(!fgets(password, size, filePass)) {
+		callError(111);
+	}
+	fclose(filePass);
+
+	if(flag_copy) copyText(password);
+
+	remove(path_pass);
+	free(secret_gpgkey);
+	return password;
+}
+
+void nonvisibleEnter(int status)
+{
+	struct termios term_settings;
+	tcgetattr(0, &term_settings); // get current settings
+	if(status == 1) {
+		term_settings.c_lflag &= ~ECHO; // flag reset
+	}
+	else {
+		term_settings.c_lflag |= ECHO;
+	}
+	tcsetattr(0, TCSANOW, &term_settings);
+}
+
+void insertPass(char *add_path, char *password, int flag_copy)
+{
+	/* gPath_rootdir = /home/[username]/.lock-password/
+	add_path = banks/france/[number]
+	gPath_pass = banks/france/[number].gpg
+	gPath_subdir = banks/france */
+
+	int size_gpgkey = sizeof(char) * GPG_PUBLICKEY_MAXLENGTH;
+	char *secret_gpgkey = (char *) malloc(size_gpgkey);
+	getGPGKey(secret_gpgkey, size_gpgkey);
+
+	char *arguments1[] = {"mkdir", "-p", gPath_subdir, NULL};
+	easyFork("mkdir", arguments1);
+
+	// create file, copy password there
+	FILE *filePass;
+	filePass = fopen(add_path, "w");	
+	if(filePass == NULL) {
+		callError(108);
+	}
+	fputs(password, filePass);
+	fclose(filePass);
+
+	if(flag_copy) copyText(password);
+
+	// encryption
+	char *arguments2[] = {"gpg", "--quiet", "--yes", "-r", secret_gpgkey, "-e", add_path, NULL};
+	easyFork("gpg", arguments2);
+
+	remove(add_path);
+	free(secret_gpgkey);
+}
+
+char *typePass(char *text, char *dest, int minlen, int maxlen)
+{
+	printf("%s", text);
+	if(fgets(dest, sizeof(char)*maxlen, stdin) == NULL) {
+		nonvisibleEnter(0);
+		printError("lpass: Unexpected end of file\n");
+	}
+
+	int len = strlen(dest);
+	if(len < minlen || len > maxlen) {
+		nonvisibleEnter(0);
+		printError("lpass: incorrect password\n");
+	}
+	
+	if(dest[len-1] == '\n') {
+		dest[len-1] = '\0';
+	}
+
+	#if defined(DEBUG)
+		printf("%s", dest);
+	#endif
+
+	printf("\n"); // for new line
+	return dest;
+}
+
+int userEnterPassword(int minlen, int maxlen, char *path_insert, int flag_echo, int flag_copy)
+{
+	char *pass_one = (char *) malloc(sizeof(char) * maxlen);
+	int rvalue = 0;
+	if(!flag_echo) {
+		char *pass_two = (char *) malloc(sizeof(char) * maxlen);
+
+		nonvisibleEnter(1); // change terminal work
+		typePass("Type your password: ", pass_one, minlen, maxlen);
+		typePass("Type your password again: ", pass_two, minlen, maxlen);
+		nonvisibleEnter(0);
+
+		if(strcmp(pass_one, pass_two) == 0) {
+			insertPass(path_insert, pass_one, flag_copy);
+			rvalue = 1;
+		}
+		free(pass_two);
+	}
+	else {
+		typePass("Type your password: ", pass_one, minlen, maxlen);
+		insertPass(path_insert, pass_one, flag_copy);
+		rvalue = 1;
+	}
+
+	free(pass_one);
+	return rvalue;
+}
+
+char *generatePassword(char *dest, int amount, int max_len)
+{
+	char allowed_symbols[] = {
+		'A','E','I','J','O','U','B','C','D','F','G','H',
+		'K','L','M','N','P','Q','R','S','T','V','W','X',
+		'Y','Z','a','e','i','j','o','u','b','c','d','f',
+		'g','h','k','l','m','n','p','q','r','s','t','v',
+		'w','x','y','z','1','2','3','4','5','6','7','8',
+		'9','0','!','#','$',';','%','^',':','&','?','*',
+		'(',')','-','_','+','=','<', '>'
+	};
+	int max = sizeof(allowed_symbols);
+	srand(time(NULL));
+
+	char password[max_len];
+	for(int i=0; i < amount; i++)
+	{
+		char c = allowed_symbols[rand() % max];
+
+		password[i] = c;
+		password[i+1] = '\0';
+	}
+
+	strcpy(dest, password);
+	return dest;
+}
+
+unsigned long hash(char *str)
+{
+    unsigned long hash = 5381;
+    char c;
+
+    while( (c = *str++) )
+        hash = ((hash << 5) + hash) + c; /* hash * 33 + c */
+
+    return hash;
+}
+
+static void clearStdinBuff()
+{
+	char garbage;
+
+	while( (garbage = fgetc(stdin)) != '\n' && garbage != EOF )
+		;
+}
+
+
+int getOverwriteAnswer(char *path)
+{
+	int buffSize = (strlen("Password for '' exists. Overwrite? (Y/N)") + strlen(path) + 1)* sizeof(char);
+	char *text = malloc(buffSize);
+	snprintf(text, buffSize, "Password for '%s' exists. Overwrite? (Y/N)", path);
+	printf("%s ", text);
+
+	int answer;
+	while((answer = fgetc(stdin)))
+	{
+		clearStdinBuff();
+		switch(answer)
+		{
+			case 'Y':
+			case 'y': { free(text); return 1; }
+			case 'N':
+			case 'n': { free(text); return 0; }
+			case EOF: printError("Error: Unexpected end of file\n");
+			default: { printf("%s ", text); break; }
+		}
+	}
+
+	free(text);
+	return -1;
+}