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| Source at commit 1166 created 13 years 10 days ago. By meklort, Fixed recent Makefile changes. Please do not use /Users/evan/SourceCode/tmp/chameleon/trunk or VPATH. the *only* time you should use /Users/evan/SourceCode/tmp/chameleon/trunk is when setting the SRCROOT variable. Also note that very soon make pkg is going to be removed. The pkg build script in trunk is very out of date. Instead please use the package maker at http://forge.voodooprojects.org/p/chameleonApplications/. Once this is ready for trunk it will be merged. | |
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| 1 | /*␊ |
| 2 | * hex_editor.c␊ |
| 3 | * ␊ |
| 4 | *␊ |
| 5 | * Created by Meklort on 10/19/10.␊ |
| 6 | * Copyright 2010 Evan Lojewski. All rights reserved.␊ |
| 7 | *␊ |
| 8 | */␊ |
| 9 | ␊ |
| 10 | #include "hex_editor.h"␊ |
| 11 | ␊ |
| 12 | int replace_patern(char* pattern, char* replacement, char* buffer, long buffer_size)␊ |
| 13 | {␊ |
| 14 | ␉long index = 0;␊ |
| 15 | ␉int num_replaced = 0;␊ |
| 16 | ␉// NOTE: patehrn and replacement are null terminated. This may change later␊ |
| 17 | ␉// If I need to replce null bytes␊ |
| 18 | ␉␊ |
| 19 | ␉if(!pattern || ␊ |
| 20 | ␉ !replacement ||␊ |
| 21 | ␉ !buffer ||␊ |
| 22 | ␉ strlen(pattern) != strlen(replacement)␊ |
| 23 | ␉ ) return 0;␊ |
| 24 | ␉␊ |
| 25 | ␉␊ |
| 26 | ␉while(index < buffer_size - strlen(pattern))␊ |
| 27 | ␉{␊ |
| 28 | ␉␉bool located = true;␊ |
| 29 | ␉␉int i = 0;␊ |
| 30 | ␉␉while(located && i < strlen(pattern))␊ |
| 31 | ␉␉{␊ |
| 32 | ␉␉␉if(pattern[i] != buffer[i + index]) located = false;␊ |
| 33 | ␉␉␉i++;␊ |
| 34 | ␉␉}␊ |
| 35 | ␉␉␊ |
| 36 | ␉␉if(located)␊ |
| 37 | ␉␉{␊ |
| 38 | ␉␉␉printf("Located patern\n");␊ |
| 39 | ␉␉␉index += strlen(pattern) - 1;␊ |
| 40 | ␉␉␉num_replaced++;␊ |
| 41 | ␉␉}␊ |
| 42 | ␉␉␊ |
| 43 | ␉␉index++;␊ |
| 44 | ␉}␊ |
| 45 | ␉␊ |
| 46 | ␉return num_replaced;␊ |
| 47 | }␊ |
| 48 | ␊ |
| 49 | ␊ |
| 50 | int replace_word(uint32_t pattern, uint32_t repalcement, char* buffer, long buffer_size)␊ |
| 51 | {␊ |
| 52 | ␉int num_replaced = 0;␊ |
| 53 | ␉char* tmp = buffer;␊ |
| 54 | ␉␊ |
| 55 | ␉if(!buffer || !buffer_size) return 0;␊ |
| 56 | ␉␊ |
| 57 | ␉␊ |
| 58 | ␉while(tmp < buffer + buffer_size - sizeof(uint32_t))␊ |
| 59 | ␉{␊ |
| 60 | ␊ |
| 61 | ␉␉uint32_t* current= (uint32_t*)tmp;␊ |
| 62 | ␉␉␊ |
| 63 | ␉␉if(*current == pattern)␊ |
| 64 | ␉␉{␊ |
| 65 | ␉␉␉*current = repalcement;␊ |
| 66 | ␉␉␉num_replaced++;␊ |
| 67 | ␉␉␉tmp += 4;␊ |
| 68 | ␉␉}␊ |
| 69 | ␉␉else ␊ |
| 70 | ␉␉{␊ |
| 71 | ␉␉␉tmp++;␊ |
| 72 | ␉␉}␊ |
| 73 | ␉}␊ |
| 74 | ␉␊ |
| 75 | ␉return num_replaced;␊ |
| 76 | }␊ |
| 77 | ␊ |
| 78 | void replace_string(char* find, const char* replace, char* string, int length)␊ |
| 79 | {␊ |
| 80 | ␉if(!find ||␊ |
| 81 | ␉ !replace ||␊ |
| 82 | ␉ !string ||␊ |
| 83 | ␉ !length ||␊ |
| 84 | ␉ strlen(find) != strlen(replace)) return;␊ |
| 85 | ␉␊ |
| 86 | ␉char* str = string;␊ |
| 87 | ␉while(length && strncmp(str, find, strlen(find)-1))␊ |
| 88 | ␉{␊ |
| 89 | ␉␉length--;␊ |
| 90 | ␉␉str++;␊ |
| 91 | ␉}␊ |
| 92 | ␉strncpy(str, replace, strlen(replace));␉// don't copy the null char␊ |
| 93 | }␊ |
| 94 | ␊ |
| 95 | void replace_bytes(char* find, int find_size, char* replace, int replace_size, char* exec, int length)␊ |
| 96 | {␊ |
| 97 | ␉if(!find ||␊ |
| 98 | ␉ !replace ||␊ |
| 99 | ␉ !exec ||␊ |
| 100 | ␉ !length ||␊ |
| 101 | ␉ find_size > replace_size)␉// Allow find_size to be less than replace_size. Will overwrite bytes including and *after* located pattern␊ |
| 102 | ␉␉return;␊ |
| 103 | ␉␊ |
| 104 | ␉char* search = exec;␉␊ |
| 105 | ␉␊ |
| 106 | ␉␊ |
| 107 | ␉while(memcmp(search, find, find_size) != 0␊ |
| 108 | ␉␉ && ((search - exec) < length))␊ |
| 109 | ␉{␊ |
| 110 | ␉␉search++;␊ |
| 111 | ␉}␊ |
| 112 | ␊ |
| 113 | ␉if((search - exec) < length)␊ |
| 114 | ␉{␊ |
| 115 | ␉␉// Mem found, replace it␊ |
| 116 | ␉␉memcpy(search, replace, replace_size);␊ |
| 117 | ␉}␊ |
| 118 | }␊ |
| 119 | ␊ |
| 120 | |
