C、C++的Makefile的编写以及动、静态库的制作调用（包括MAC地址的获取及MD5加密）

一、C代码

静态库

四个.h.c文件

add.h

1 #ifndef ADD_H2 #define ADD_H3 4 int add(int a,int b);5 6 #endif

add.c

1 #include <stdio.h>2 3 int add(int a,int b)4 {5     printf("%d %d\n",a,b);6     return (a + b);7 }

 

decrease.h

1 #ifndef DECREASE_H2 #define DECREASE_H3 4 int decrease(int a,int b);5 6 #endif

decrease.c

1 #include <stdio.h>2 3 int decrease(int a,int b)4 {5     printf("%d %d\n",a,b);6     return (a - b);7 }

multiply.h

1 #ifndef MULTIPLY_H2 #define MULTIPLY_H3 4 int multiply(int a,int b);5 6 #endif

multiply.c

1 #include <stdio.h>2 3 int multiply(int a,int b)4 {5     printf("%d %d\n",a,b);6     return (a * b);7 }

divide.h

1 #ifndef DIVIDE_H2 #define DIVIDE_H3 4 float divide(float a,int b);5 6 #endif

divide.c

1 #include <stdio.h>2 3 int divide(int a,int b)4 {5     printf("%d %d\n",a,b);6     return (a / b);7 }

编译成静态库的命令：

1 gcc -c add.c decrease.c multiply.c divide.c2 ar -rv libarithmetic.a add.o decrease.o multiply.o divide.o

若想要在main.c文件中调用

 1 #include <stdio.h> 2  3 int main(int argc,char **argv) 4 { 5     int a = add(3,5); 6     int b = decrease(8,6); 7     int c = multiply(5,7); 8     int d = divide(15,2); 9     printf("%d %d %d %d\n",a,b,c,d);10     return 0;11 }

编译时使用命令

1 gcc -o hello main.c -L /home/jason/share/test/Makefile/static/lib  -larithmetic

 

编译成动态库的命令

1 gcc add.c decrease.c multiply.c divide.c -fPIC -shared -o libmyhello.so

main.c调用

1 gcc -o main main.c -L/home/jason/share/test/Makefile/share/lib -lmyhello 

终端导入路径：

1  export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:/home/jason/share/test/Makefile/share/lib

 

Makefile的编写

在hello.c文件里调用静态库libarithmetic.a

main.c

1 #include <stdio.h>2 3 int main(int argc,char **argv)4 {5     hello("everyone");6     return 0;7 }

 

hello.c

 1 #include <stdio.h> 2  3 void hello(const char *name) 4 { 5     printf("Hello %s!\n",name); 6     int a = add(3,5); 7     int b = decrease(8,6); 8     int c = multiply(5,7); 9     int d = divide(15,2);10     printf("%d %d %d %d\n",a,b,c,d);11 }

 

Makefile

 1 CC = gcc 2 CXX = g++ 3  4 LIBS = -static -L/home/jason/share/test/Makefile/static/lib -larithmetic 5  6 OBJ = admdtest 7  8 OBJ_SOURCE = main.c \ 9     hello.c10 11 $(OBJ):$(OBJ_SOURCE)12     $(CC) -o $@  $(OBJ_SOURCE) $(LIBS)13 14 15 clean:16     rm -f *.o $(OBJ)

 

动态库调用的Makefile

 1 CC = gcc 2 CXX = g++ 3  4 LIBS = -L/home/jason/share/test/Makefile/share/lib -lmyhello 5  6 OBJ = admdtest 7  8 OBJ_SOURCE = main.c \ 9     hello.c10 11 $(OBJ):$(OBJ_SOURCE)12     $(CC) -o $@ $(OBJ_SOURCE) $(LIBS) 13 14 15 clean:16     rm -f *.o $(OBJ)

并在终端导入环境：

1  export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:/home/jason/share/test/Makefile/share/lib

 

二、C++代码

md5.h

 1 #ifndef MD5_H 2 #define MD5_H 3  4 #include <string>  5 #include <fstream>  6  7 /* Type define */  8 typedef unsigned char byte;  9 typedef unsigned long ulong; 10 11 using std::string; 12 using std::ifstream; 13 14 /* MD5 declaration. */ 15 class MD516 { 17 public: 18 MD5(); 19 MD5(const void *input, size_t length); 20 MD5(const string &str); 21 MD5(ifstream &in); 22 void update(const void *input, size_t length); 23 void update(const string &str); 24 void update(ifstream &in); 25 const byte* digest(); 26 string toString(); 27 void reset();28 void PrintMD5(const string &str, MD5 &md5); 29 private: 30 void update(const byte *input, size_t length); 31 void final(); 32 void transform(const byte block[64]); 33 void encode(const ulong *input, byte *output, size_t length); 34 void decode(const byte *input, ulong *output, size_t length); 35 string bytesToHexString(const byte *input, size_t length); 36 37 /* class uncopyable */ 38 MD5(const MD5&); 39 MD5& operator=(const MD5&); 40 private: 41 ulong _state[4];    /* state (ABCD) */ 42 ulong _count[2];    /* number of bits, modulo 2^64 (low-order word first) */ 43 byte _buffer[64];    /* input buffer */ 44 byte _digest[16];    /* message digest */ 45 bool _finished;     /* calculate finished ? */ 46 47 static const byte PADDING[64];    /* padding for calculate */ 48 static const char HEX[16]; 49 static const size_t BUFFER_SIZE = 1024; 50 }; 51 52 #endif/*MD5_H*/

 

md5.cpp

  1 #include "md5.h"  2 #include <iostream>  3 #include <string.h>  4 #include <stdlib.h>  5   6 using namespace std;  7   8 /* Constants for MD5Transform routine. */  9 #define S11 7 10 #define S12 12 11 #define S13 17 12 #define S14 22 13 #define S21 5 14 #define S22 9 15 #define S23 14 16 #define S24 20 17 #define S31 4 18 #define S32 11 19 #define S33 16 20 #define S34 23 21 #define S41 6 22 #define S42 10 23 #define S43 15 24 #define S44 21 25  26  27 /* F, G, H and I are basic MD5 functions. 28 */ 29 #define F(x, y, z) (((x) & (y)) | ((~x) & (z))) 30 #define G(x, y, z) (((x) & (z)) | ((y) & (~z))) 31 #define H(x, y, z) ((x) ^ (y) ^ (z)) 32 #define I(x, y, z) ((y) ^ ((x) | (~z))) 33  34 /* ROTATE_LEFT rotates x left n bits. 35 */ 36 #define ROTATE_LEFT(x, n) (((x) << (n)) | ((x) >> (32-(n)))) 37  38 /* FF, GG, HH, and II transformations for rounds 1, 2, 3, and 4. 39 Rotation is separate from addition to prevent recomputation. 40 */ 41 #define FF(a, b, c, d, x, s, ac) { \ 42 (a) += F ((b), (c), (d)) + (x) + ac; \ 43 (a) = ROTATE_LEFT ((a), (s)); \ 44 (a) += (b); \ 45 } 46 #define GG(a, b, c, d, x, s, ac) { \ 47 (a) += G ((b), (c), (d)) + (x) + ac; \ 48 (a) = ROTATE_LEFT ((a), (s)); \ 49 (a) += (b); \ 50 } 51 #define HH(a, b, c, d, x, s, ac) { \ 52 (a) += H ((b), (c), (d)) + (x) + ac; \ 53 (a) = ROTATE_LEFT ((a), (s)); \ 54 (a) += (b); \ 55 } 56 #define II(a, b, c, d, x, s, ac) { \ 57 (a) += I ((b), (c), (d)) + (x) + ac; \ 58 (a) = ROTATE_LEFT ((a), (s)); \ 59 (a) += (b); \ 60 } 61  62  63 const byte MD5::PADDING[64] = { 0x80 }; 64 const char MD5::HEX[16] = { 65 '0', '1', '2', '3', 66 '4', '5', '6', '7', 67 '8', '9', 'a', 'b', 68 'c', 'd', 'e', 'f' 69 }; 70  71 /* Default construct. */ 72 MD5::MD5() { 73 reset(); 74 } 75  76 /* Construct a MD5 object with a input buffer. */ 77 MD5::MD5(const void *input, size_t length) { 78 reset(); 79 update(input, length); 80 } 81  82 /* Construct a MD5 object with a string. */ 83 MD5::MD5(const string &str) { 84 reset(); 85 update(str); 86 } 87  88 /* Construct a MD5 object with a file. */ 89 MD5::MD5(ifstream &in) { 90 reset(); 91 update(in); 92 } 93  94 /* Return the message-digest */ 95 const byte* MD5::digest() { 96 if (!_finished) { 97 _finished = true; 98 final(); 99 }100 return _digest;101 }102 103 /* Reset the calculate state */104 void MD5::reset() {105 106 _finished = false;107 /* reset number of bits. */108 _count[0] = _count[1] = 0;109 /* Load magic initialization constants. */110 _state[0] = 0x67452301;111 _state[1] = 0xefcdab89;112 _state[2] = 0x98badcfe;113 _state[3] = 0x10325476;114 }115 116 /* Updating the context with a input buffer. */117 void MD5::update(const void *input, size_t length) {118 update((const byte*)input, length);119 }120 121 /* Updating the context with a string. */122 void MD5::update(const string &str) {123 update((const byte*)str.c_str(), str.length());124 }125 126 /* Updating the context with a file. */127 void MD5::update(ifstream &in) {128 129 if (!in)130 return;131 132 std::streamsize length;133 char buffer[BUFFER_SIZE];134 while (!in.eof()) {135 in.read(buffer, BUFFER_SIZE);136 length = in.gcount();137 if (length > 0)138 update(buffer, length);139 }140 in.close();141 }142 143 /* MD5 block update operation. Continues an MD5 message-digest144 operation, processing another message block, and updating the145 context.146 */147 void MD5::update(const byte *input, size_t length) {148 149 ulong i, index, partLen;150 151 _finished = false;152 153 /* Compute number of bytes mod 64 */154 index = (ulong)((_count[0] >> 3) & 0x3f);155 156 /* update number of bits */157 if((_count[0] += ((ulong)length << 3)) < ((ulong)length << 3))158 _count[1]++;159 _count[1] += ((ulong)length >> 29);160 161 partLen = 64 - index;162 163 /* transform as many times as possible. */164 if(length >= partLen) {165 166 memcpy(&_buffer[index], input, partLen);167 transform(_buffer);168 169 for (i = partLen; i + 63 < length; i += 64)170 transform(&input[i]);171 index = 0;172 173 } else {174 i = 0;175 }176 177 /* Buffer remaining input */178 memcpy(&_buffer[index], &input[i], length-i);179 }180 181 /* MD5 finalization. Ends an MD5 message-_digest operation, writing the182 the message _digest and zeroizing the context.183 */184 void MD5::final() {185 186 byte bits[8];187 ulong oldState[4];188 ulong oldCount[2];189 ulong index, padLen;190 191 /* Save current state and count. */192 memcpy(oldState, _state, 16);193 memcpy(oldCount, _count, 8);194 195 /* Save number of bits */196 encode(_count, bits, 8);197 198 /* Pad out to 56 mod 64. */199 index = (ulong)((_count[0] >> 3) & 0x3f);200 padLen = (index < 56) ? (56 - index) : (120 - index);201 update(PADDING, padLen);202 203 /* Append length (before padding) */204 update(bits, 8);205 206 /* Store state in digest */207 encode(_state, _digest, 16);208 209 /* Restore current state and count. */210 memcpy(_state, oldState, 16);211 memcpy(_count, oldCount, 8);212 }213 214 /* MD5 basic transformation. Transforms _state based on block. */215 void MD5::transform(const byte block[64]) {216 217 ulong a = _state[0], b = _state[1], c = _state[2], d = _state[3], x[16];218 219 decode(block, x, 64);220 221 /* Round 1 */222 FF (a, b, c, d, x[ 0], S11, 0xd76aa478); /* 1 */223 FF (d, a, b, c, x[ 1], S12, 0xe8c7b756); /* 2 */224 FF (c, d, a, b, x[ 2], S13, 0x242070db); /* 3 */225 FF (b, c, d, a, x[ 3], S14, 0xc1bdceee); /* 4 */226 FF (a, b, c, d, x[ 4], S11, 0xf57c0faf); /* 5 */227 FF (d, a, b, c, x[ 5], S12, 0x4787c62a); /* 6 */228 FF (c, d, a, b, x[ 6], S13, 0xa8304613); /* 7 */229 FF (b, c, d, a, x[ 7], S14, 0xfd469501); /* 8 */230 FF (a, b, c, d, x[ 8], S11, 0x698098d8); /* 9 */231 FF (d, a, b, c, x[ 9], S12, 0x8b44f7af); /* 10 */232 FF (c, d, a, b, x[10], S13, 0xffff5bb1); /* 11 */233 FF (b, c, d, a, x[11], S14, 0x895cd7be); /* 12 */234 FF (a, b, c, d, x[12], S11, 0x6b901122); /* 13 */235 FF (d, a, b, c, x[13], S12, 0xfd987193); /* 14 */236 FF (c, d, a, b, x[14], S13, 0xa679438e); /* 15 */237 FF (b, c, d, a, x[15], S14, 0x49b40821); /* 16 */238 239 /* Round 2 */240 GG (a, b, c, d, x[ 1], S21, 0xf61e2562); /* 17 */241 GG (d, a, b, c, x[ 6], S22, 0xc040b340); /* 18 */242 GG (c, d, a, b, x[11], S23, 0x265e5a51); /* 19 */243 GG (b, c, d, a, x[ 0], S24, 0xe9b6c7aa); /* 20 */244 GG (a, b, c, d, x[ 5], S21, 0xd62f105d); /* 21 */245 GG (d, a, b, c, x[10], S22, 0x2441453); /* 22 */246 GG (c, d, a, b, x[15], S23, 0xd8a1e681); /* 23 */247 GG (b, c, d, a, x[ 4], S24, 0xe7d3fbc8); /* 24 */248 GG (a, b, c, d, x[ 9], S21, 0x21e1cde6); /* 25 */249 GG (d, a, b, c, x[14], S22, 0xc33707d6); /* 26 */250 GG (c, d, a, b, x[ 3], S23, 0xf4d50d87); /* 27 */251 GG (b, c, d, a, x[ 8], S24, 0x455a14ed); /* 28 */252 GG (a, b, c, d, x[13], S21, 0xa9e3e905); /* 29 */253 GG (d, a, b, c, x[ 2], S22, 0xfcefa3f8); /* 30 */254 GG (c, d, a, b, x[ 7], S23, 0x676f02d9); /* 31 */255 GG (b, c, d, a, x[12], S24, 0x8d2a4c8a); /* 32 */256 257 /* Round 3 */258 HH (a, b, c, d, x[ 5], S31, 0xfffa3942); /* 33 */259 HH (d, a, b, c, x[ 8], S32, 0x8771f681); /* 34 */260 HH (c, d, a, b, x[11], S33, 0x6d9d6122); /* 35 */261 HH (b, c, d, a, x[14], S34, 0xfde5380c); /* 36 */262 HH (a, b, c, d, x[ 1], S31, 0xa4beea44); /* 37 */263 HH (d, a, b, c, x[ 4], S32, 0x4bdecfa9); /* 38 */264 HH (c, d, a, b, x[ 7], S33, 0xf6bb4b60); /* 39 */265 HH (b, c, d, a, x[10], S34, 0xbebfbc70); /* 40 */266 HH (a, b, c, d, x[13], S31, 0x289b7ec6); /* 41 */267 HH (d, a, b, c, x[ 0], S32, 0xeaa127fa); /* 42 */268 HH (c, d, a, b, x[ 3], S33, 0xd4ef3085); /* 43 */269 HH (b, c, d, a, x[ 6], S34, 0x4881d05); /* 44 */270 HH (a, b, c, d, x[ 9], S31, 0xd9d4d039); /* 45 */271 HH (d, a, b, c, x[12], S32, 0xe6db99e5); /* 46 */272 HH (c, d, a, b, x[15], S33, 0x1fa27cf8); /* 47 */273 HH (b, c, d, a, x[ 2], S34, 0xc4ac5665); /* 48 */274 275 /* Round 4 */276 II (a, b, c, d, x[ 0], S41, 0xf4292244); /* 49 */277 II (d, a, b, c, x[ 7], S42, 0x432aff97); /* 50 */278 II (c, d, a, b, x[14], S43, 0xab9423a7); /* 51 */279 II (b, c, d, a, x[ 5], S44, 0xfc93a039); /* 52 */280 II (a, b, c, d, x[12], S41, 0x655b59c3); /* 53 */281 II (d, a, b, c, x[ 3], S42, 0x8f0ccc92); /* 54 */282 II (c, d, a, b, x[10], S43, 0xffeff47d); /* 55 */283 II (b, c, d, a, x[ 1], S44, 0x85845dd1); /* 56 */284 II (a, b, c, d, x[ 8], S41, 0x6fa87e4f); /* 57 */285 II (d, a, b, c, x[15], S42, 0xfe2ce6e0); /* 58 */286 II (c, d, a, b, x[ 6], S43, 0xa3014314); /* 59 */287 II (b, c, d, a, x[13], S44, 0x4e0811a1); /* 60 */288 II (a, b, c, d, x[ 4], S41, 0xf7537e82); /* 61 */289 II (d, a, b, c, x[11], S42, 0xbd3af235); /* 62 */290 II (c, d, a, b, x[ 2], S43, 0x2ad7d2bb); /* 63 */291 II (b, c, d, a, x[ 9], S44, 0xeb86d391); /* 64 */292 293 _state[0] += a;294 _state[1] += b;295 _state[2] += c;296 _state[3] += d;297 }298 299 /* Encodes input (ulong) into output (byte). Assumes length is300 a multiple of 4.301 */302 void MD5::encode(const ulong *input, byte *output, size_t length) {303 304 for(size_t i=0, j=0; j<length; i++, j+=4) {305 output[j]= (byte)(input[i] & 0xff);306 output[j+1] = (byte)((input[i] >> 8) & 0xff);307 output[j+2] = (byte)((input[i] >> 16) & 0xff);308 output[j+3] = (byte)((input[i] >> 24) & 0xff);309 }310 }311 312 /* Decodes input (byte) into output (ulong). Assumes length is313 a multiple of 4.314 */315 void MD5::decode(const byte *input, ulong *output, size_t length) {316 317 for(size_t i=0, j=0; j<length; i++, j+=4) {    318 output[i] = ((ulong)input[j]) | (((ulong)input[j+1]) << 8) |319 (((ulong)input[j+2]) << 16) | (((ulong)input[j+3]) << 24);320 }321 }322 323 /* Convert byte array to hex string. */324 string MD5::bytesToHexString(const byte *input, size_t length) {325 string str;326 str.reserve(length << 1);327 for(size_t i = 0; i < length; i++) {328 int t = input[i];329 int a = t / 16;330 int b = t % 16;331 str.append(1, HEX[a]);332 str.append(1, HEX[b]);333 }334 return str;335 }336 337 /* Convert digest to string value */338 string MD5::toString() 339 {340 return bytesToHexString(digest(), 16);341 }342 343 void PrintMD5(const string &str, MD5 &md5)344 {345 cout << "MD5(\"" << str << "\") = " << md5.toString() << endl;346 }

 

编译成静态库：

1 g++ -c md5.cpp2 ar -rv libmd5.a md5.o

 

在main.cpp里面的调用

 1 #include "md5.h" 2 #include <iostream> 3 using namespace std; 4  5 int main(int argc,char **argv) 6 { 7     MD5 md5; 8     const char *livekey = "0090E601F3E9"; 9     md5.update(livekey);10     cout <<"MD5(\""<<livekey<<"\") = " << md5.toString()<<endl;11     return 0;12 }

编译命令：

1 g++ -o main main.cpp -L /home/jason/share/test/c++_lib/static/lib  -lmd5

 

编译成动态库：

1 g++ md5.cpp -fPIC -shared -o libmd5.so

 

main.cpp调用

1 g++ -o main main.c -L/home/jason/share/test/c++_lib/share/lib -lmd5

 

Makefile的编写

在main.cpp中调用mac.cpp

 

 1 #include "mac.h" 2 #include <iostream> 3 using namespace std; 4  5 int main(int argc,char **argv) 6 { 7         MAC mac; 8         mac.getMac(); 9         return 0;10 }

 

mac.h

 1 #ifndef MAC_H 2 #define MAC_H 3  4 #include "md5.h" 5  6 #include <stdio.h> 7 #include <net/if.h> 8 #include <sys/ioctl.h> 9 #include <unistd.h>10 #include <netinet/in.h>11 12 #include <string.h>13 #include <stdlib.h>14 15 #include <iostream>16 using namespace std;17 18 class MAC19 {20         public:21         MAC();22         void getMac();23 };24 25 #endif

mac.cpp

 1 #include "mac.h" 2  3 #include <iostream> 4 using namespace std; 5  6 MAC::MAC() 7 { 8  9 }10 11 void MAC::getMac()12 {13     char mac[32];14     int sockfd;15     struct ifreq tmp;16     char mac_addr[30];17 18     sockfd = socket(AF_INET, SOCK_STREAM, 0);19     if( sockfd < 0)20     {21         perror("create socket fail\n");22         return ;23     }24 25     memset(&tmp,0,sizeof(struct ifreq));26     strncpy(tmp.ifr_name,"eth0",sizeof(tmp.ifr_name)-1);27     if( (ioctl(sockfd,SIOCGIFHWADDR,&tmp)) < 0 )28     {29         printf("mac ioctl error\n");30         return ;31     }32 33     sprintf(mac_addr, "%02x%02x%02x%02x%02x%02x",34             (unsigned char)tmp.ifr_hwaddr.sa_data[0],35             (unsigned char)tmp.ifr_hwaddr.sa_data[1],36             (unsigned char)tmp.ifr_hwaddr.sa_data[2],37             (unsigned char)tmp.ifr_hwaddr.sa_data[3],38             (unsigned char)tmp.ifr_hwaddr.sa_data[4],39             (unsigned char)tmp.ifr_hwaddr.sa_data[5]40             );41     printf("local mac:%s\n", mac_addr);42     close(sockfd);43     memcpy(mac,mac_addr,strlen(mac));44     MD5 md5;45     md5.update(mac);46     cout <<"MD5(\""<<mac<<"\") = " << md5.toString()<<endl;47 48 }

md5.h、md5.cpp同上这里省略

Makefile

静态库的调用

 

 1 CC = gcc 2 CXX = g++ 3  4 LIBS = -static -L/home/jason/share/test/c++_Makefile/static/lib -lmd5 5  6 OBJ = main 7  8 OBJ_SOURCE = main.cpp \ 9     mac.cpp10 11 $(OBJ):$(OBJ_SOURCE)12     $(CXX) -o $@  $(OBJ_SOURCE) $(LIBS)13 14 clean:15     rm -f *.o $(OBJ)

动态库的调用

 

 1 CC = gcc 2 CXX = g++ 3  4 LIBS = -L/home/jason/share/test/c++_Makefile/share/lib -lmd5 5  6 OBJ = main 7  8 OBJ_SOURCE = main.cpp \ 9     mac.cpp10 11 $(OBJ):$(OBJ_SOURCE)12     $(CXX) -o $@  $(OBJ_SOURCE) $(LIBS)13 14 clean:15     rm -f *.o $(OBJ)

需要在终端导入库环境：
export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:/home/jason/share/test/c++_Makefile/share/lib

 

以上代码通过测试