WIP - Initial complete C implementation that's still buggy and generates broken passwords, yay.

MasterPassword/C/build

@@ -1,3 +1,5 @@
 #!/usr/bin/env bash -e
-gcc types.c -o types.o
+# Run with -DDEBUG to enable trace-level output.
-gcc -I"lib/scrypt/lib" -I"lib/scrypt/libcperciva" -l "crypto_aesctr.o" -l "sha256.o" -l "crypto_scrypt-nosse.o" -l "memlimit.o" -l "scryptenc_cpuperf.o" -l"scryptenc.o" -l"types.o" -l"crypto" -L"lib/scrypt" mpw.c -o mpw
+
+gcc -c types.c -o types.o "$@"
+gcc -I"lib/scrypt/lib" -I"lib/scrypt/libcperciva" -l "crypto_aesctr.o" -l "sha256.o" -l "crypto_scrypt-nosse.o" -l "memlimit.o" -l "scryptenc_cpuperf.o" -l"scryptenc.o" -l"types.o" -l"crypto" -L"." -L"lib/scrypt" mpw.c -o mpw "$@"

MasterPassword/C/mpw.c

@@ -63,6 +63,7 @@ int main(int argc, char *const argv[]) {
     const char *userName = getenv( MP_env_username );
     const char *masterPassword = NULL;
     const char *siteName = NULL;
+    MPElementType siteType = MPElementTypeGeneratedLong;
     const char *siteTypeString = getenv( MP_env_sitetype );
     uint32_t siteCounter = 1;
     const char *siteCounterString = getenv( MP_env_sitecounter );
@@ -106,16 +107,22 @@ int main(int argc, char *const argv[]) {
         fprintf(stderr, "Missing user name.\n");
         return 1;
     }
+    trc("userName: %s\n", userName);
     if (!siteName) {
         fprintf(stderr, "Missing site name.\n");
         return 1;
     }
+    trc("siteName: %s\n", siteName);
     if (siteCounterString)
         siteCounter = atoi( siteCounterString );
     if (siteCounter < 1) {
         fprintf(stderr, "Invalid site counter: %d\n", siteCounter);
         return 1;
     }
+    trc("siteCounter: %d\n", siteCounter);
+    if (siteTypeString)
+        siteType = TypeWithName( siteTypeString );
+    trc("siteType: %d (%s)\n", siteType, siteTypeString);
 
     // Read the master password.
     char *mpwConfigPath = homedir(".mpw");
@@ -123,6 +130,7 @@ int main(int argc, char *const argv[]) {
         fprintf(stderr, "Couldn't resolve path for configuration file: %d\n", errno);
         return 1;
     }
+    trc("mpwConfigPath: %s\n", mpwConfigPath);
     FILE *mpwConfig = fopen(mpwConfigPath, "r");
     if (!mpwConfig) {
         fprintf(stderr, "Couldn't open configuration file: %s: %d\n", mpwConfigPath, errno);
@@ -141,6 +149,7 @@ int main(int argc, char *const argv[]) {
         fprintf(stderr, "Missing master password for user: %s\n", userName);
         return 1;
     }
+    trc("masterPassword: %s\n", masterPassword);
 
     // Calculate the master key.
     uint8_t *masterKey = malloc( MP_dkLen );
@@ -178,15 +187,16 @@ int main(int argc, char *const argv[]) {
     free(sitePasswordInfo);
 
     // Determine the cipher.
-    const char *cipher = CipherForType(siteType, sitePasswordSeed);
+    const char *cipher = CipherForType(siteType, sitePasswordSeed[0]);
-    //trc(@"type %@, ciphers: %@, selected: %@", [self nameOfType:type], typeCiphers, cipher);
+    trc("type %s, cipher: %s\n", siteTypeString, cipher);
 
     // Encode the password from the seed using the cipher.
     //NSAssert([seed length] >= [cipher length] + 1, @"Insufficient seed bytes to encode cipher.");
     char *sitePassword = calloc(strlen(cipher) + 1, sizeof(char));
-    for (int c = 0; c < strlen(cipher); ++c)
+    for (int c = 0; c < strlen(cipher); ++c) {
-        //trc(@"class %@ has characters: %@, index: %u, selected: %@", cipherClass, cipherClassCharacters, keyByte, character);
         sitePassword[c] = CharacterFromClass(cipher[c], sitePasswordSeed[c + 1]);
+        trc("class %c, character: %c\n", cipher[c], sitePassword[c]);
+    }
     memset(sitePasswordSeed, 0, sizeof(sitePasswordSeed));
 
     // Output the password.

MasterPassword/C/types.c

@@ -6,58 +6,116 @@
 //  Copyright (c) 2012 Lyndir. All rights reserved.
 //
 
+#include <stdlib.h>
 #include <stdio.h>
+#include <string.h>
+#include <ctype.h>
 #include "types.h"
 
-const char *CipherForType(MPElementType type, char seedByte) {
+const MPElementType TypeWithName(const char *typeName) {
+    char lowerTypeName[strlen(typeName)];
+    strcpy(lowerTypeName, typeName);
+    for (char *tN = lowerTypeName; *tN; ++tN)
+        *tN = tolower(*tN);
+
+    if (0 == strcmp(lowerTypeName, "x") || 0 == strcmp(lowerTypeName, "max") || 0 == strcmp(lowerTypeName, "maximum"))
+        return MPElementTypeGeneratedMaximum;
+    if (0 == strcmp(lowerTypeName, "l") || 0 == strcmp(lowerTypeName, "long"))
+        return MPElementTypeGeneratedLong;
+    if (0 == strcmp(lowerTypeName, "m") || 0 == strcmp(lowerTypeName, "med") || 0 == strcmp(lowerTypeName, "medium"))
+        return MPElementTypeGeneratedMedium;
+    if (0 == strcmp(lowerTypeName, "b") || 0 == strcmp(lowerTypeName, "basic"))
+        return MPElementTypeGeneratedBasic;
+    if (0 == strcmp(lowerTypeName, "s") || 0 == strcmp(lowerTypeName, "short"))
+        return MPElementTypeGeneratedShort;
+    if (0 == strcmp(lowerTypeName, "p") || 0 == strcmp(lowerTypeName, "pin"))
+        return MPElementTypeGeneratedPIN;
+
+    fprintf(stderr, "Not a generated type name: %s", lowerTypeName);
+    abort();
+}
+
+const char *CipherForType(MPElementType type, uint8_t seedByte) {
     if (!(type & MPElementTypeClassGenerated)) {
         fprintf(stderr, "Not a generated type: %d", type);
         abort();
     }
 
     switch (type) {
-        case MPElementTypeGeneratedMaximum:
+        case MPElementTypeGeneratedMaximum: {
-            char *ciphers = { "anoxxxxxxxxxxxxxxxxx", "axxxxxxxxxxxxxxxxxno" };
+            char *ciphers[] = { "anoxxxxxxxxxxxxxxxxx", "axxxxxxxxxxxxxxxxxno" };
             return ciphers[seedByte % 2];
-        case MPElementTypeGeneratedLong:
+        }
-            char *ciphers = { "CvcvnoCvcvCvcv", "CvcvCvcvnoCvcv", "CvcvCvcvCvcvno", "CvccnoCvcvCvcv", "CvccCvcvnoCvcv", "CvccCvcvCvcvno", "CvcvnoCvccCvcv", "CvcvCvccnoCvcv", "CvcvCvccCvcvno", "CvcvnoCvcvCvcc", "CvcvCvcvnoCvcc", "CvcvCvcvCvccno", "CvccnoCvccCvcv", "CvccCvccnoCvcv", "CvccCvccCvcvno", "CvcvnoCvccCvcc", "CvcvCvccnoCvcc", "CvcvCvccCvccno", "CvccnoCvcvCvcc", "CvccCvcvnoCvcc", "CvccCvcvCvccno" };
+        case MPElementTypeGeneratedLong: {
+            char *ciphers[] = { "CvcvnoCvcvCvcv", "CvcvCvcvnoCvcv", "CvcvCvcvCvcvno", "CvccnoCvcvCvcv", "CvccCvcvnoCvcv", "CvccCvcvCvcvno", "CvcvnoCvccCvcv", "CvcvCvccnoCvcv", "CvcvCvccCvcvno", "CvcvnoCvcvCvcc", "CvcvCvcvnoCvcc", "CvcvCvcvCvccno", "CvccnoCvccCvcv", "CvccCvccnoCvcv", "CvccCvccCvcvno", "CvcvnoCvccCvcc", "CvcvCvccnoCvcc", "CvcvCvccCvccno", "CvccnoCvcvCvcc", "CvccCvcvnoCvcc", "CvccCvcvCvccno" };
             return ciphers[seedByte % 21];
-        case MPElementTypeGeneratedMedium:
+        }
-            char *ciphers = { "CvcnoCvc", "CvcCvcno" };
+        case MPElementTypeGeneratedMedium: {
+            char *ciphers[] = { "CvcnoCvc", "CvcCvcno" };
             return ciphers[seedByte % 2];
-        case MPElementTypeGeneratedBasic:
+        }
-            char *ciphers = { "aaanaaan", "aannaaan", "aaannaaa" };
+        case MPElementTypeGeneratedBasic: {
+            char *ciphers[] = { "aaanaaan", "aannaaan", "aaannaaa" };
             return ciphers[seedByte % 3];
-        case MPElementTypeGeneratedShort:
+        }
+        case MPElementTypeGeneratedShort: {
             return "Cvcn";
-        case MPElementTypeGeneratedPIN:
+        }
+        case MPElementTypeGeneratedPIN: {
             return "nnnn";
         }
+        default: {
+            fprintf(stderr, "Unknown generated type: %d", type);
+            abort();
+        }
+    }
 }
 
-const char CharacterFromClass(char characterClass, char seedByte) {
+const char CharacterFromClass(char characterClass, uint8_t seedByte) {
+    const char *classCharacters;
     switch (characterClass) {
-        case 'V':
+        case 'V': {
-            return "AEIOU"[seedByte];
+            classCharacters = "AEIOU";
-        case 'C':
+            break;
-            return "BCDFGHJKLMNPQRSTVWXYZ"[seedByte];
-        case 'v':
-            return "aeiou"[seedByte];
-        case 'c':
-            return "bcdfghjklmnpqrstvwxyz"[seedByte];
-        case 'A':
-            return "AEIOUBCDFGHJKLMNPQRSTVWXYZ"[seedByte];
-        case 'a':
-            return "AEIOUaeiouBCDFGHJKLMNPQRSTVWXYZbcdfghjklmnpqrstvwxyz"[seedByte];
-        case 'n':
-            return "0123456789"[seedByte];
-        case 'o':
-            return "@&amp;%?,=[]_:-+*$#!'^~;()/."[seedByte];
-        case 'x':
-            return "AEIOUaeiouBCDFGHJKLMNPQRSTVWXYZbcdfghjklmnpqrstvwxyz0123456789!@#$%^&amp;*()"[seedByte];
         }
-
+        case 'C': {
+            classCharacters = "BCDFGHJKLMNPQRSTVWXYZ";
+            break;
+        }
+        case 'v': {
+            classCharacters = "aeiou";
+            break;
+        }
+        case 'c': {
+            classCharacters = "bcdfghjklmnpqrstvwxyz";
+            break;
+        }
+        case 'A': {
+            classCharacters = "AEIOUBCDFGHJKLMNPQRSTVWXYZ";
+            break;
+        }
+        case 'a': {
+            classCharacters = "AEIOUaeiouBCDFGHJKLMNPQRSTVWXYZbcdfghjklmnpqrstvwxyz";
+            break;
+        }
+        case 'n': {
+            classCharacters = "0123456789";
+            break;
+        }
+        case 'o': {
+            classCharacters = "@&%?,=[]_:-+*$#!'^~;()/.";
+            break;
+        }
+        case 'x': {
+            classCharacters = "AEIOUaeiouBCDFGHJKLMNPQRSTVWXYZbcdfghjklmnpqrstvwxyz0123456789!@#$%^&*()";
+            break;
+        }
+        default: {
             fprintf(stderr, "Unknown character class: %c", characterClass);
             abort();
          }
+    }
+
+    return classCharacters[seedByte % strlen(classCharacters)];
+}
 

MasterPassword/C/types.h

@@ -6,27 +6,27 @@
 //  Copyright (c) 2012 Lyndir. All rights reserved.
 //
 
-typedef NS_ENUM(NSUInteger, MPElementContentType) {
+typedef enum {
     MPElementContentTypePassword,
     MPElementContentTypeNote,
     MPElementContentTypePicture,
-};
+} MPElementContentType;
 
-typedef NS_ENUM(NSUInteger, MPElementTypeClass) {
+typedef enum {
     /** Generate the password. */
     MPElementTypeClassGenerated = 1 << 4,
     /** Store the password. */
     MPElementTypeClassStored = 1 << 5,
-};
+} MPElementTypeClass;
 
-typedef NS_ENUM(NSUInteger, MPElementFeature) {
+typedef enum {
     /** Export the key-protected content data. */
     MPElementFeatureExportContent = 1 << 10,
     /** Never export content. */
     MPElementFeatureDevicePrivate = 1 << 11,
-};
+} MPElementFeature;
 
-typedef NS_ENUM(NSUInteger, MPElementType) {
+typedef enum {
     MPElementTypeGeneratedMaximum = 0x0 | MPElementTypeClassGenerated | 0x0,
     MPElementTypeGeneratedLong = 0x1 | MPElementTypeClassGenerated | 0x0,
     MPElementTypeGeneratedMedium = 0x2 | MPElementTypeClassGenerated | 0x0,
@@ -36,7 +36,14 @@ typedef NS_ENUM(NSUInteger, MPElementType) {
 
     MPElementTypeStoredPersonal = 0x0 | MPElementTypeClassStored | MPElementFeatureExportContent,
     MPElementTypeStoredDevicePrivate = 0x1 | MPElementTypeClassStored | MPElementFeatureDevicePrivate,
-};
+} MPElementType;
 
-extern const char *CipherForType(MPElementType type, char seedByte);
+#ifdef DEBUG
-extern const char CharacterFromClass(char characterClass, char seedByte);
+#define trc(...) fprintf(stderr, __VA_ARGS__)
+#else
+#define trc(...) do {} while (0)
+#endif
+
+const MPElementType TypeWithName(const char *typeName);
+const char *CipherForType(MPElementType type, uint8_t seedByte);
+const char CharacterFromClass(char characterClass, uint8_t seedByte);