refactor code&style; use gpgme, delete fork for gpg; generate/showtree cmd don't use global vars anymore

3 files changed, 124 insertions, 148 deletions

diff --git a/src/implementation.c b/src/implementation.c
index e499f0a..f71b0a1 100644
--- a/src/implementation.c
+++ b/src/implementation.c
@@ -11,15 +11,15 @@
 #include "xstd.h"
 #include "easydir.h"
 #include "implementation.h"
+#include "r-gpgme.h"
 
 /* define in implementation.h */
 // GPG_PUBLICKEY_MAXLENGTH NNNN
 
 // == global var == 
-extern char *gPath_subdir; // example: programming/github.com
 extern char *gPath_pass; // example: programming/github.com/joursoir.gpg
 
-static void copyText(char *password)
+void copy_outside(char *password)
 {
 	char *simple_path = malloc(sizeof(char) * (5 + 1));
 	strcpy(simple_path, ".pass");
@@ -64,56 +64,42 @@ int check_sneaky_paths(const char *path)
 	return 0;
 }
 
-char *getGPGKey()
+char *get_pubkey()
 {
-	int size_gpgkey = sizeof(char) * GPG_PUBLICKEY_MAXLENGTH;
-	char *pub_gpgkey = malloc(size_gpgkey + sizeof(char));
+	int size_key = sizeof(char) * GPG_PUBLICKEY_MAXLENGTH;
+	char *pubkey = malloc(size_key + sizeof(char));
 
 	FILE *fileGPG = fopen(".gpg-key", "r");
 	if(fileGPG == NULL) {
+		free(pubkey);
 		if(errno == ENOENT)
-			printError("error: No GPG key exists. Use \"lpass init\".");
-		callError(121);
+			errprint(NULL, "No GPG key exists. Use \"lpass init\".");
+		perror(".gpg-key");
+		return NULL;
 	}
 
-	if(!fgets(pub_gpgkey, size_gpgkey, fileGPG)) {
-		callError(122);
+	if(!fgets(pubkey, size_key, fileGPG)) {
+		free(pubkey);
+		pubkey = NULL;
 	}
 	fclose(fileGPG);
 
-	return pub_gpgkey;
+	return pubkey;
 }
 
-char* getPassword(char *path_pass, char *password, size_t size, int flag_copy)
+char *get_password(const char *path)
 {
-	char *public_gpgkey = getGPGKey();
-
-	char *arguments[] = {"gpg", "-d", "--quiet", "-r", public_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(public_gpgkey);
-	return password;
+	return decrypt_data(path);
 }
 
-void nonvisibleEnter(int status)
+void visible_enter(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;
+	else
+		term_settings.c_lflag &= ~ECHO;
 	tcsetattr(0, TCSANOW, &term_settings);
 }
 
@@ -130,9 +116,11 @@ static void mkdir_recursive(const char *path)
 	free(fullpath);
 }
 
-int insertPass(char *path, char *password, int flag_copy)
+int insert_pass(const char *path, const char *password)
 {
-	char *public_gpgkey = getGPGKey();
+	char *public_gpgkey = get_pubkey();
+	if(public_gpgkey == NULL)
+		return 1;
 
 	// create directories
 	char *tmp, *dirs_path;
@@ -142,29 +130,12 @@ int insertPass(char *path, char *password, int flag_copy)
 		mkdir_recursive(dirs_path);
 	free(tmp);
 
-	// create file, copy password there
-	FILE *file_pass;
-	file_pass = fopen(path, "w");	
-	if(file_pass == NULL) {
-		free(public_gpgkey);
-		return 1;
-	}
-	fputs(password, file_pass);
-	fclose(file_pass);
-
-	if(flag_copy)
-		copyText(password);
-
-	// encryption
-	char *encrypt_arg[] = {"gpg", "--quiet", "--yes", "-r", public_gpgkey, "-e", path, NULL};
-	easyFork("gpg", encrypt_arg);
-
-	remove(path);
+	int ret = ecnrypt_data(path, password, public_gpgkey);
 	free(public_gpgkey);
-	return 0;
+	return ret;
 }
 
-char *getInput(int minlen, int maxlen)
+char *get_input(int minlen, int maxlen)
 {
 	size_t size = sizeof(char) * maxlen;
 	char *pass = malloc(size + sizeof(char)); // +1 for '\0'
@@ -187,7 +158,7 @@ char *getInput(int minlen, int maxlen)
 	return pass;
 }
 
-char *generatePassword(char *dest, int amount)
+void gen_password(char *dest, int amount)
 {
 	int i, min = 33, max = 126;
 	char password[amount];
@@ -197,19 +168,16 @@ char *generatePassword(char *dest, int amount)
 		password[i] = min + rand() % (max-min);
 
 	strcpy(dest, password);
-	return dest;
 }
 
 static void clearStdinBuff()
 {
-	char garbage;
-
+	int garbage;
 	while( (garbage = fgetc(stdin)) != '\n' && garbage != EOF )
 		;
 }
 
-
-int getOverwriteAnswer(char *path)
+int overwrite_answer(const char *path)
 {
 	int answer;
 	printf("Password for \"%s\" exists. Overwrite? (Y/N)\n", path);
@@ -219,13 +187,16 @@ int getOverwriteAnswer(char *path)
 		switch(answer)
 		{
 			case 'Y':
-			case 'y': return OW_YES;
+			case 'y': return 'y';
 			case 'N':
-			case 'n': return OW_NO;
-			case EOF: printError("Error: Unexpected end of file\n");
-			default: { printf("Overwrite? (Y/N) "); break; }
+			case 'n':
+			case EOF: return 'n'; 
+			default: {
+				printf("Overwrite? (Y/N) ");
+				break;
+			}
 		}
 	}
 
-	return 2;
+	return 'n';
 }
diff --git a/src/implementation.h b/src/implementation.h
index 15f21ff..15fc56d 100644
--- a/src/implementation.h
+++ b/src/implementation.h
@@ -3,18 +3,20 @@
 
 #define GPG_PUBLICKEY_MAXLENGTH 1024
 
-enum asnwers {
-	OW_YES = 0,
-	OW_NO = 1,
-};
+#define errprint(RET, ...) \
+	do { \
+		fprintf(stderr, "Error: " __VA_ARGS__); \
+		return RET; \
+	} while(0)
 
+void copy_outside(char *password);
 int check_sneaky_paths(const char *path);
-char *getGPGKey();
-char* getPassword(char *path_pass, char *password, size_t size, int flag_copy);
-void nonvisibleEnter(int status);
-int insertPass(char *path, char *password, int flag_copy);
-char *getInput(int minlen, int maxlen);
-char *generatePassword(char *dest, int amount);
-int getOverwriteAnswer(char *path);
+char *get_pubkey();
+char *get_password(const char *path);
+void visible_enter(int status);
+int insert_pass(const char *path, const char *password);
+char *get_input(int minlen, int maxlen);
+void gen_password(char *dest, int amount);
+int overwrite_answer(const char *path);
 
 #endif
\ No newline at end of file
diff --git a/src/main.c b/src/main.c
index 2a923d5..965f9bc 100644
--- a/src/main.c
+++ b/src/main.c
@@ -43,11 +43,6 @@ enum constants {
 		fprintf(stdout, "Usage: lpass " __VA_ARGS__); \
 		return 1; \
 	} while(0)
-#define errprint(...) \
-	do { \
-		fprintf(stderr, "Error: " __VA_ARGS__); \
-		return 1; \
-	} while(0)
 #ifdef DEBUG
 	#define dbgprint(...) fprintf(stderr, "Debug: " __VA_ARGS__)
 #else
@@ -72,7 +67,6 @@ static struct cmd_struct commands[] = {
 };
 
 // == global var == 
-char *gPath_subdir = NULL; // example: programming/github.com
 char *gPath_pass = NULL; // example: programming/github.com/joursoir.gpg
 
 static void globalSplitPath(char *source)
@@ -83,11 +77,6 @@ static void globalSplitPath(char *source)
 	strcpy(gPath_pass, source);
 	strcat(gPath_pass, ".gpg");
 
-	gPath_subdir = malloc(sizeof(char) * len_path); // path without working dir and pass file
-	strcpy(gPath_subdir, source);
-	dirname(gPath_subdir);
-
-	dbgprint("g_suddir: %s\n", gPath_subdir);
 	dbgprint("g_pass: %s\n", gPath_pass);
 }
 
@@ -101,7 +90,7 @@ int cmd_init(int argc, char *argv[])
 	// create .gpg-key in storage
 	FILE *filekey = fopen(GPGKEY_FILE, "w");	
 	if(!filekey)
-		errprint("fopen() failed");
+		errprint(1, "fopen() failed");
 
 	fputs(gpg_key, filekey);
 	fclose(filekey);
@@ -139,11 +128,11 @@ int cmd_insert(int argc, char *argv[])
 
 	result = check_sneaky_paths(path);
 	if(result)
-		errprint("You have used forbidden paths\n");
+		errprint(1, "You have used forbidden paths\n");
 
 	if(file_exist(path) == F_ISFILE) {
 		if(!flag_force) {
-			if(getOverwriteAnswer(path) != OW_YES)
+			if(overwrite_answer(path) != 'y')
 				return 1;
 		}
 	}
@@ -151,44 +140,49 @@ int cmd_insert(int argc, char *argv[])
 	char *f_pass;
 	if(!flag_echo) {
 		char *s_pass;
-		nonvisibleEnter(1); // change terminal work
+		visible_enter(0);
 
 		fputs("Type your password: ", stdout);
-		f_pass = getInput(minlen_pass, maxlen_pass);
+		f_pass = get_input(minlen_pass, maxlen_pass);
 		fputs("\n", stdout);
 		if(f_pass == NULL) {
-			nonvisibleEnter(0);
-			errprint("Incorrect password");
+			visible_enter(1);
+			errprint(1, "Incorrect password");
 		}
 
 		fputs("Type your password again: ", stdout);
-		s_pass = getInput(minlen_pass, maxlen_pass);
+		s_pass = get_input(minlen_pass, maxlen_pass);
 		fputs("\n", stdout);
-		nonvisibleEnter(0);
+		visible_enter(1);
 		if(s_pass == NULL) {
 			free(f_pass);
-			errprint("Incorrect password");
+			errprint(1, "Incorrect password");
 		}
 
 		if(strcmp(f_pass, s_pass) != 0) {
 			free(f_pass);
 			free(s_pass);
-			errprint("Password do not match");
+			errprint(1, "Password do not match");
 		}
 		free(s_pass);
 	}
 	else {
 		fputs("Type your password: ", stdout);
-		f_pass = getInput(minlen_pass, maxlen_pass);
+		f_pass = get_input(minlen_pass, maxlen_pass);
 		if(f_pass == NULL)
-			errprint("Incorrect password");
+			errprint(1, "Incorrect password");
 	}
 
-	result = insertPass(path, f_pass, flag_copy);
-	if(result)
-		errprint("Can't add password to LockPassword");
+	result = insert_pass(path, f_pass);
+	if(result) {
+		free(f_pass);
+		errprint(1, "Can't add password to LockPassword");
+	}
+	if(flag_copy)
+		copy_outside(f_pass);
 
 	printf("Password added successfully for %s\n", path);
+	free(f_pass);
 	return 0;
 }
 
@@ -208,7 +202,7 @@ int cmd_edit(int argc, char *argv[])
 				// create file, copy name text editor there
 				FILE *f_texteditor = fopen(TEXTEDITOR_FILE, "w");	
 				if(!f_texteditor)
-					errprint("fopen() failed");
+					errprint(1, "fopen() failed");
 				fputs(optarg, f_texteditor);
 				fclose(f_texteditor);
 				printf("You changed text editor to %s\n", optarg);
@@ -226,13 +220,13 @@ int cmd_edit(int argc, char *argv[])
 
 	result = check_sneaky_paths(path_to_password);
 	if(result)
-		errprint("You have used forbidden paths\n");
+		errprint(1, "You have used forbidden paths\n");
 	globalSplitPath(path_to_password);
 
 	result = file_exist(gPath_pass);
 	if(result != F_ISFILE) {
-		if(result == F_ISDIR) errprint("It is a directory\n");
-		errprint("No such file exists\n");
+		if(result == F_ISDIR) errprint(1, "It is a directory\n");
+		errprint(1, "No such file exists\n");
 	}
 
 	// configure text editor file 
@@ -241,13 +235,13 @@ int cmd_edit(int argc, char *argv[])
 	if(f_texteditor == NULL) {
 		f_texteditor = fopen(TEXTEDITOR_FILE, "w");	
 		if(f_texteditor == NULL)
-			errprint("fopen() failed");
+			errprint(1, "fopen() failed");
 		fputs(STANDARD_TEXTEDITOR, f_texteditor); // in file
 		strcpy(text_editor, STANDARD_TEXTEDITOR); // in variable
 	}
 	else {
 		if(!fgets(text_editor, sizeof(char)*MAXLEN_TEXTEDITOR, f_texteditor))
-			errprint("fgets() failed");
+			errprint(1, "fgets() failed");
 	}
 	fclose(f_texteditor);
 
@@ -255,7 +249,7 @@ int cmd_edit(int argc, char *argv[])
 	// end configure
 
 	// decryption
-	char *public_gpgkey = getGPGKey();
+	char *public_gpgkey = get_pubkey();
 
 	char *decrypt_arg[] = {"gpg", "-d", "--quiet", "-r", public_gpgkey, "-o", path_to_password, gPath_pass, NULL};
 	easyFork("gpg", decrypt_arg);
@@ -307,35 +301,40 @@ int cmd_generate(int argc, char *argv[])
 	if(optind < argc) optind++; // for skip "generate"
 	dbgprint("passname: %s\n", argv[optind]);
 
-	if(argv[optind] == NULL)
+	char *path = argv[optind];
+	if(path == NULL)
 		usageprint("%s", description);
-	char *path_to_password = argv[optind];
 
 	if(pass_length < minlen_pass || pass_length > maxlen_pass)
-		errprint("You typed an incorrect number\n");
+		errprint(1, "You typed an incorrect length\n");
 
-	result = check_sneaky_paths(path_to_password);
+	result = check_sneaky_paths(path);
 	if(result)
-		errprint("You have used forbidden paths\n");
-	globalSplitPath(path_to_password);
+		errprint(1, "You have used forbidden paths\n");
 
-	if(file_exist(gPath_pass) == F_ISFILE) {
+	result = file_exist(path);
+	if(result == F_ISFILE) {
 		if(!flag_force) {
-			if(getOverwriteAnswer(path_to_password) != OW_YES)
+			if(overwrite_answer(path) != 'y')
 				return 1;
 		}
 	}
+	else if(result == F_ISDIR)
+		errprint(1, "You can't generate password for directory\n");
 
 	// generate password 
-	char gpass[pass_length];
-	generatePassword(gpass, pass_length);
+	char g_pass[pass_length];
+	gen_password(g_pass, pass_length);
 
-	result = insertPass(path_to_password, gpass, flag_copy);
+	result = insert_pass(path, g_pass);
 	if(result)
-		errprint("Can't add password to LockPassword");
+		errprint(1, "Can't add password to LockPassword");
 
-	if(!flag_copy) printf("Generated password: %s\n", gpass);
-	printf("Password added successfully for %s\n", path_to_password);
+	if(flag_copy)
+		copy_outside(g_pass);
+	else
+		printf("Generated password: %s\n", g_pass);
+	printf("Password added successfully for %s\n", path);
 	return 0;
 }
 
@@ -349,14 +348,14 @@ int cmd_remove(int argc, char *argv[])
 
 	result = check_sneaky_paths(path);
 	if(result)
-		errprint("You have used forbidden paths\n");
+		errprint(1, "You have used forbidden paths\n");
 
 	result = file_exist(path);
 	if(result == F_NOEXIST)
-		errprint("No such file exists\n");
+		errprint(1, "No such file exists\n");
 	if(result == F_ISDIR) {
 		if(count_dir_entries(path) != 0)
-			errprint("Directory not empty\n");
+			errprint(1, "Directory not empty\n");
 	}
 
 	remove(path);
@@ -394,18 +393,18 @@ int cmd_move(int argc, char *argv[])
 
 	result = check_sneaky_paths(old_path);
 	if(result)
-		errprint("You have used forbidden paths\n");
+		errprint(1, "You have used forbidden paths\n");
 	result = file_exist(old_path);
 	if(result == F_NOEXIST)
-		errprint("No such file exists\n");
+		errprint(1, "No such file exists\n");
 
 	result = check_sneaky_paths(new_path);
 	if(result)
-		errprint("You have used forbidden paths\n");
+		errprint(1, "You have used forbidden paths\n");
 	result = file_exist(new_path);
 	if(result != F_NOEXIST) {
 		if(!flag_force) {
-			if(getOverwriteAnswer(new_path) != OW_YES)
+			if(overwrite_answer(new_path) != 'y')
 				return 1;
 		}
 	}
@@ -472,7 +471,7 @@ int cmd_showtree(int argc, char *argv[])
 	if(argv[optind]) {
 		result = check_sneaky_paths(argv[optind]);
 		if(result)
-			errprint("You have used forbidden paths\n");
+			errprint(1, "You have used forbidden paths\n");
 		path = malloc(sizeof(char) * (strlen(argv[optind]) + 1));
 		strcpy(path, argv[optind]);
 	}
@@ -481,27 +480,33 @@ int cmd_showtree(int argc, char *argv[])
 		strcpy(path, ".");
 	}
 
-	if(opendir(path)) // if it's directory
+	result = file_exist(path);
+	if(result == F_ISDIR)
 	{
 		if(flag_copy)
-			errprint("You must type a passname, not a directory\n");
+			errprint(1, "You must type a passname, not a directory\n");
 
 		if(strcmp(path, ".") == 0) printf("Password Manager\n");
 		else printf("Password Manager/%s\n", path);
 		tree(path, "");
 	}
-	else
+	else if(result == F_ISFILE)
 	{
-		globalSplitPath(path);
-
-		if(file_exist(gPath_pass) == F_ISFILE)
-		{
-			char password[maxlen_pass];
-			getPassword(path, password, sizeof(char)*maxlen_pass, flag_copy);
-			if(!flag_copy)
-				printf("%s\n", password);
+		char *pass = get_password(path);
+		if(pass == NULL) {
+			free(path);
+			errprint(1, "Decrypt password failed\n");
 		}
-		else errprint("%s is not in the password storage\n", path);
+		if(flag_copy)
+			copy_outside(pass);
+		else
+			printf("%s\n", pass);
+
+		free(pass);
+	}
+	else {
+		free(path);
+		errprint(1, "This path is not in the password storage\n");
 	}
 
 	free(path);
@@ -543,7 +548,7 @@ static int goto_maindir()
 int main(int argc, char *argv[])
 {
 	if(!isatty(STDIN_FILENO))
-		errprint("Please, use a terminal to run this application\n");
+		errprint(1, "Please, use a terminal to run this application\n");
 
 	if(goto_maindir())
 		perror("chdir");
@@ -556,10 +561,8 @@ int main(int argc, char *argv[])
 	else
 		ret = cmd_showtree(argc, argv);
 
-	if(gPath_subdir != NULL) {
-		free(gPath_subdir);
+	if(gPath_pass != NULL)
 		free(gPath_pass);
-	}
 	
 	return ret;
 }
\ No newline at end of file