From ecc7f3375b887729e45e1e838dbffde44d954b43 Mon Sep 17 00:00:00 2001 From: Lars-Dominik Braun Date: Sun, 22 Jun 2008 11:02:04 +0200 Subject: wardrobe: libwardrobe is a last.fm scrobbling library --- libwardrobe/src/Makefile.am | 6 + libwardrobe/src/main.c | 310 +++++++++++++++++++++++++++++++++++++++++++ libwardrobe/src/md5.c | 316 ++++++++++++++++++++++++++++++++++++++++++++ libwardrobe/src/md5.h | 25 ++++ libwardrobe/src/wardrobe.h | 31 +++++ 5 files changed, 688 insertions(+) create mode 100644 libwardrobe/src/Makefile.am create mode 100644 libwardrobe/src/main.c create mode 100644 libwardrobe/src/md5.c create mode 100644 libwardrobe/src/md5.h create mode 100644 libwardrobe/src/wardrobe.h (limited to 'libwardrobe/src') diff --git a/libwardrobe/src/Makefile.am b/libwardrobe/src/Makefile.am new file mode 100644 index 0000000..470635a --- /dev/null +++ b/libwardrobe/src/Makefile.am @@ -0,0 +1,6 @@ +lib_LTLIBRARIES = libwardrobe.la + +libwardrobe_la_SOURCES = main.c md5.c md5.h +include_HEADERS = wardrobe.h +libwardrobe_la_CPPFLAGS = ${LIBCURL_CFLAGS} +libwardrobe_la_LIBADD = ${LIBCURL_LIBS} diff --git a/libwardrobe/src/main.c b/libwardrobe/src/main.c new file mode 100644 index 0000000..f188d46 --- /dev/null +++ b/libwardrobe/src/main.c @@ -0,0 +1,310 @@ +/* +Copyright (c) 2008 Lars-Dominik Braun + +Permission is hereby granted, free of charge, to any person obtaining a copy +of this software and associated documentation files (the "Software"), to deal +in the Software without restriction, including without limitation the rights +to use, copy, modify, merge, publish, distribute, sublicense, and/or sell +copies of the Software, and to permit persons to whom the Software is +furnished to do so, subject to the following conditions: + +The above copyright notice and this permission notice shall be included in +all copies or substantial portions of the Software. + +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE +AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER +LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, +OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN +THE SOFTWARE. +*/ + +#include +#include +#include +#include +#include + +#include "md5.h" + +typedef struct { + char *user; + char *password; + char authToken[100]; + char postUrl[1024]; + CURL *ch; +} WardrobeHandle_t; + +typedef struct { + char *artist; + char *title; + time_t started; + time_t length; +} WardrobeSong_t; + +typedef enum {WARDROBE_RET_ERR, WARDROBE_RET_OK, + WARDROBE_RET_CLIENT_BANNED, WARDROBE_RET_BADAUTH, + WARDROBE_RET_BADTIME, WARDROBE_RET_BADSESSION} WardrobeReturn_t; + +#define WARDROBE_HTTP_BUFFER_SIZE 10000 + +void WardrobeSongInit (WardrobeSong_t *ws) { + memset (ws, 0, sizeof (*ws)); +} + +/* callback for curl, writes data to buffer + * @param received data + * @param block size + * @param blocks received + * @param write data into this buffer + * @return written bytes + */ +size_t WardrobeCurlRetToVar (void *ptr, size_t size, size_t nmemb, + void *stream) { + char *charPtr = ptr; + char *streamPtr = stream; + + if (strlen (streamPtr) + nmemb > WARDROBE_HTTP_BUFFER_SIZE) { + printf ("buffer overflow...\n"); + return 0; + } else { + memcpy (streamPtr+strlen(streamPtr), charPtr, size*nmemb); + return size*nmemb; + } +} + +/* receive data from url using GET method + * @param initialized curl handle + * @param call this url + * @param put received data here, memory is allocated by this function + * @return nothing yet + */ +void WardrobeHttpGet (CURL *ch, char *url, char **retData) { + /* Let's hope nothing will be bigger than this... */ + char curlRet[WARDROBE_HTTP_BUFFER_SIZE]; + + memset (curlRet, 0, sizeof (curlRet)); + + curl_easy_setopt (ch, CURLOPT_URL, url); + curl_easy_setopt (ch, CURLOPT_WRITEFUNCTION, WardrobeCurlRetToVar); + curl_easy_setopt (ch, CURLOPT_WRITEDATA, curlRet); + + curl_easy_perform (ch); + + *retData = strdup (curlRet); +} + +/* post data to url and receive answer as string + * @param initialized curl handle + * @param call this url + * @param post this data + * @param put received data here, memory is allocated by this function + * @return nothing yet + */ +void WardrobeHttpPost (CURL *ch, char *url, char *postData, char **retData) { + /* Let's hope nothing will be bigger than this... */ + char curlRet[WARDROBE_HTTP_BUFFER_SIZE]; + + memset (curlRet, 0, sizeof (curlRet)); + curl_easy_setopt (ch, CURLOPT_URL, url); + curl_easy_setopt (ch, CURLOPT_POSTFIELDS, postData); + curl_easy_setopt (ch, CURLOPT_WRITEFUNCTION, WardrobeCurlRetToVar); + curl_easy_setopt (ch, CURLOPT_WRITEDATA, curlRet); + + curl_easy_perform (ch); + + *retData = strdup (curlRet); +} + +/* initialize wardrobe handle (setup curl, e.g.) + * @param wardrobe handle + */ +void WardrobeInit (WardrobeHandle_t *wh) { + memset (wh, 0, sizeof (*wh)); + wh->ch = curl_easy_init (); +} + +/* free () replacement that does some checks and zeros memory + * @param pointer + * @param size or 0 to disable zeroing + */ +void WardrobeFree (void *ptr, size_t size) { + if (ptr != NULL) { + if (size > 0) { + memset (ptr, 0, size); + } + free (ptr); + } +} + +/* cleanup song + * @param song + */ +void WardrobeSongDestroy (WardrobeSong_t *ws) { + WardrobeFree (ws->artist, 0); + WardrobeFree (ws->title, 0); + memset (ws, 0, sizeof (*ws)); +} + +/* cleanup wardrobe handle + * @param initialized wardrobe handle + */ +void WardrobeDestroy (WardrobeHandle_t *wh) { + WardrobeFree (wh->user, 0); + WardrobeFree (wh->password, 0); + curl_easy_cleanup (wh->ch); + memset (wh, 0, sizeof (*wh)); +} + +/* get session id from last.fm; you don't have to call this manually + * @param wardrobe handle + * @return _OK or error + */ +WardrobeReturn_t WardrobeHandshake (WardrobeHandle_t *wh) { + /* we'll use gmt */ + time_t currTime = time (NULL); + time_t currGmTime = mktime (gmtime (&currTime)); + char url[1024], tmp[100], *tmpDigest, *pwDigest, *ret; + WardrobeReturn_t fRet = WARDROBE_RET_ERR; + + tmpDigest = WardrobeMd5Calc (wh->password); + snprintf (tmp, sizeof (tmp), "%s%li", tmpDigest, currGmTime); + pwDigest = WardrobeMd5Calc (tmp); + snprintf (url, sizeof (url), "http://post.audioscrobbler.com/" + "?hs=true&p=1.2&c=tst&v=1.0&u=%s&t=%li&a=%s", wh->user, + currGmTime, pwDigest); + + WardrobeHttpGet (wh->ch, url, &ret); + + /* parse answer */ + if (memcmp (ret, "OK", 2) == 0) { + char *newlines[5]; + size_t i; + newlines[0] = ret; + /* split string */ + for (i = 1; i < sizeof (newlines) / sizeof (*newlines); i++) { + newlines[i] = strchr (newlines[i-1]+1, '\n'); + } + /* copy needed values */ + if (newlines[2] - newlines[1]-1 < sizeof (wh->authToken)) { + memcpy (wh->authToken, newlines[1]+1, newlines[2] - + newlines[1]-1); + } else { + printf ("buffer overflow!\n"); + } + if (newlines[4] - newlines[3]-1 < sizeof (wh->postUrl)) { + memcpy (wh->postUrl, newlines[3]+1, newlines[4] - + newlines[3]-1); + } else { + printf ("buffer overflow!\n"); + } + fRet = WARDROBE_RET_OK; + } else if (memcmp (ret, "BADAUTH", 7) == 0) { + fRet = WARDROBE_RET_BADAUTH; + } else if (memcmp (ret, "BADTIME", 7) == 0) { + fRet = WARDROBE_RET_BADTIME; + } else if (memcmp (ret, "BANNED", 6) == 0) { + fRet = WARDROBE_RET_CLIENT_BANNED; + } + + WardrobeFree (tmpDigest, WARDROBE_MD5_DIGEST_LEN); + WardrobeFree (pwDigest, WARDROBE_MD5_DIGEST_LEN); + WardrobeFree (ret, 0); + + return fRet; +} + +/* _really_ submit song to last.fm + * @param wardrobe handle + * @param song + * @return _OK or error + */ +WardrobeReturn_t WardrobeSendSong (WardrobeHandle_t *wh, + WardrobeSong_t *ws) { + char postContent[10000]; + char *urlencArtist, *urlencTitle, *ret; + WardrobeReturn_t fRet = WARDROBE_RET_ERR; + + urlencArtist = curl_easy_escape (wh->ch, ws->artist, 0); + urlencTitle = curl_easy_escape (wh->ch, ws->title, 0); + + snprintf (postContent, sizeof (postContent), "s=%s&a[0]=%s&t[0]=%s&" + "i[0]=%li&o[0]=P&r[0]=&l[0]=%li&b[0]=&n[0]=&m[0]=", + wh->authToken, urlencArtist, urlencTitle, ws->started, + ws->length); + + WardrobeHttpPost (wh->ch, wh->postUrl, postContent, &ret); + if (memcmp (ret, "OK", 2) == 0) { + fRet = WARDROBE_RET_OK; + } else if (memcmp (ret, "BADSESSION", 10) == 0) { + fRet = WARDROBE_RET_BADSESSION; + } + + curl_free (urlencArtist); + curl_free (urlencTitle); + WardrobeFree (ret, 0); + + return fRet; +} + +/* submit played track to last.fm + * @public yes + * @param wardrobe handle + * @param song data + * @return _OK or error + */ +WardrobeReturn_t WardrobeSubmit (WardrobeHandle_t *wh, + WardrobeSong_t *ws) { + size_t i; + WardrobeReturn_t fRet = WARDROBE_RET_ERR; + + if (strlen (wh->authToken) <= 0 && (fRet = WardrobeHandshake (wh)) != + WARDROBE_RET_OK) { + return fRet; + } + for (i = 0; i < 2; i++) { + fRet = WardrobeSendSong (wh, ws); + if (fRet == WARDROBE_RET_OK) { + return WARDROBE_RET_OK; + } else if (fRet == WARDROBE_RET_BADSESSION && + (fRet = WardrobeHandshake (wh)) != WARDROBE_RET_OK) { + return fRet; + } + } + return fRet; +} + +/* return dynamic allocated error string, don't forget to free it + * @param error int + * @return human readable error string or NULL on error + */ +char *WardrobeErrorToString (WardrobeReturn_t ret) { + switch (ret) { + case WARDROBE_RET_ERR: + return strdup ("Unknown error.\n"); + break; + + case WARDROBE_RET_OK: + return strdup ("Everything's fine :)\n"); + break; + + case WARDROBE_RET_CLIENT_BANNED: + return strdup ("Client banned. Try to update your software.\n"); + break; + + case WARDROBE_RET_BADAUTH: + return strdup ("Wrong username or password.\n"); + break; + + case WARDROBE_RET_BADTIME: + return strdup ("System time wrong. Check your system time and " + "correct it.\n"); + break; + + case WARDROBE_RET_BADSESSION: + return strdup ("Bad session. Try to login again.\n"); + break; + } + return NULL; +} diff --git a/libwardrobe/src/md5.c b/libwardrobe/src/md5.c new file mode 100644 index 0000000..d41b5c9 --- /dev/null +++ b/libwardrobe/src/md5.c @@ -0,0 +1,316 @@ +/* Copyright (C) 1991-2, RSA Data Security, Inc. Created 1991. All +rights reserved. + +License to copy and use this software is granted provided that it +is identified as the "RSA Data Security, Inc. MD5 Message-Digest +Algorithm" in all material mentioning or referencing this software +or this function. + +License is also granted to make and use derivative works provided +that such works are identified as "derived from the RSA Data +Security, Inc. MD5 Message-Digest Algorithm" in all material +mentioning or referencing the derived work. + +RSA Data Security, Inc. makes no representations concerning either +the merchantability of this software or the suitability of this +software for any particular purpose. It is provided "as is" +without express or implied warranty of any kind. + +These notices must be retained in any copies of any part of this +documentation and/or software. + */ + +#include +#include +#include + +#include "md5.h" + +/* Constants for MD5Transform routine. */ +#define S11 7 +#define S12 12 +#define S13 17 +#define S14 22 +#define S21 5 +#define S22 9 +#define S23 14 +#define S24 20 +#define S31 4 +#define S32 11 +#define S33 16 +#define S34 23 +#define S41 6 +#define S42 10 +#define S43 15 +#define S44 21 + +/* MD5 context. */ +typedef struct { + unsigned long int state[4]; /* state (ABCD) */ + unsigned long int count[2]; /* number of bits, modulo 2^64 (lsb first) */ + unsigned char buffer[64]; /* input buffer */ +} MD5_CTX; + +void MD5Init (MD5_CTX *); +void MD5Update (MD5_CTX *, unsigned char *, unsigned int); +void MD5Final (unsigned char [16], MD5_CTX *); + +static void MD5Transform (unsigned long int [4], unsigned char [64]); +static void Encode (unsigned char *, unsigned long int *, unsigned int); +static void Decode (unsigned long int *, unsigned char *, unsigned int); + +static unsigned char PADDING[64] = { + 0x80, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 +}; + +/* F, G, H and I are basic MD5 functions. */ +#define F(x, y, z) (((x) & (y)) | ((~x) & (z))) +#define G(x, y, z) (((x) & (z)) | ((y) & (~z))) +#define H(x, y, z) ((x) ^ (y) ^ (z)) +#define I(x, y, z) ((y) ^ ((x) | (~z))) + +/* ROTATE_LEFT rotates x left n bits. */ +#define ROTATE_LEFT(x, n) (((x) << (n)) | ((x) >> (32-(n)))) + +/* FF, GG, HH, and II transformations for rounds 1, 2, 3, and 4. +Rotation is separate from addition to prevent recomputation. + */ +#define FF(a, b, c, d, x, s, ac) { \ + (a) += F ((b), (c), (d)) + (x) + (unsigned long int)(ac); \ + (a) = ROTATE_LEFT ((a), (s)); \ + (a) += (b); \ + } +#define GG(a, b, c, d, x, s, ac) { \ + (a) += G ((b), (c), (d)) + (x) + (unsigned long int)(ac); \ + (a) = ROTATE_LEFT ((a), (s)); \ + (a) += (b); \ + } +#define HH(a, b, c, d, x, s, ac) { \ + (a) += H ((b), (c), (d)) + (x) + (unsigned long int)(ac); \ + (a) = ROTATE_LEFT ((a), (s)); \ + (a) += (b); \ + } +#define II(a, b, c, d, x, s, ac) { \ + (a) += I ((b), (c), (d)) + (x) + (unsigned long int)(ac); \ + (a) = ROTATE_LEFT ((a), (s)); \ + (a) += (b); \ + } + +/* MD5 initialization. Begins an MD5 operation, writing a new context. + * @param context + */ +void MD5Init (MD5_CTX *context) { + context->count[0] = context->count[1] = 0; + /* Load magic initialization constants. */ + context->state[0] = 0x67452301; + context->state[1] = 0xefcdab89; + context->state[2] = 0x98badcfe; + context->state[3] = 0x10325476; +} + +/* MD5 block update operation. Continues an MD5 message-digest + * operation, processing another message block, and updating the + * context. + * @param context + * @param input block + * @param length of input block + */ +void MD5Update (MD5_CTX *context, unsigned char *input, + unsigned int inputLen) { + unsigned int i, index, partLen; + + /* Compute number of bytes mod 64 */ + index = (unsigned int)((context->count[0] >> 3) & 0x3F); + + /* Update number of bits */ + if ((context->count[0] += ((unsigned long int) inputLen << 3)) < + ((unsigned long int)inputLen << 3)) { + context->count[1]++; + } + context->count[1] += ((unsigned long int) inputLen >> 29); + + partLen = 64 - index; + + /* Transform as many times as possible. */ + if (inputLen >= partLen) { + memcpy (&context->buffer[index], input, partLen); + MD5Transform (context->state, context->buffer); + + for (i = partLen; i + 63 < inputLen; i += 64) { + MD5Transform (context->state, &input[i]); + } + + index = 0; + } else { + i = 0; + } + + /* Buffer remaining input */ + memcpy (&context->buffer[index], &input[i], inputLen-i); +} + +/* MD5 finalization. Ends an MD5 message-digest operation, writing the + * the message digest and zeroizing the context. + * @param message digest + * @param context + */ +void MD5Final (unsigned char digest[16], MD5_CTX *context) { + unsigned char bits[8]; + unsigned int index, padLen; + + /* Save number of bits */ + Encode (bits, context->count, 8); + + /* Pad out to 56 mod 64. */ + index = (unsigned int) ((context->count[0] >> 3) & 0x3f); + padLen = (index < 56) ? (56 - index) : (120 - index); + MD5Update (context, PADDING, padLen); + + /* Append length (before padding) */ + MD5Update (context, bits, 8); + /* Store state in digest */ + Encode (digest, context->state, 16); + + /* Zeroize sensitive information. */ + memset (context, 0, sizeof (*context)); +} + +/* MD5 basic transformation. Transforms state based on block. */ +static void MD5Transform (unsigned long int state[4], + unsigned char block[64]) { + unsigned long int a = state[0], b = state[1], c = state[2], + d = state[3], x[16]; + + Decode (x, block, 64); + + /* Round 1 */ + FF (a, b, c, d, x[ 0], S11, 0xd76aa478); /* 1 */ + FF (d, a, b, c, x[ 1], S12, 0xe8c7b756); /* 2 */ + FF (c, d, a, b, x[ 2], S13, 0x242070db); /* 3 */ + FF (b, c, d, a, x[ 3], S14, 0xc1bdceee); /* 4 */ + FF (a, b, c, d, x[ 4], S11, 0xf57c0faf); /* 5 */ + FF (d, a, b, c, x[ 5], S12, 0x4787c62a); /* 6 */ + FF (c, d, a, b, x[ 6], S13, 0xa8304613); /* 7 */ + FF (b, c, d, a, x[ 7], S14, 0xfd469501); /* 8 */ + FF (a, b, c, d, x[ 8], S11, 0x698098d8); /* 9 */ + FF (d, a, b, c, x[ 9], S12, 0x8b44f7af); /* 10 */ + FF (c, d, a, b, x[10], S13, 0xffff5bb1); /* 11 */ + FF (b, c, d, a, x[11], S14, 0x895cd7be); /* 12 */ + FF (a, b, c, d, x[12], S11, 0x6b901122); /* 13 */ + FF (d, a, b, c, x[13], S12, 0xfd987193); /* 14 */ + FF (c, d, a, b, x[14], S13, 0xa679438e); /* 15 */ + FF (b, c, d, a, x[15], S14, 0x49b40821); /* 16 */ + + /* Round 2 */ + GG (a, b, c, d, x[ 1], S21, 0xf61e2562); /* 17 */ + GG (d, a, b, c, x[ 6], S22, 0xc040b340); /* 18 */ + GG (c, d, a, b, x[11], S23, 0x265e5a51); /* 19 */ + GG (b, c, d, a, x[ 0], S24, 0xe9b6c7aa); /* 20 */ + GG (a, b, c, d, x[ 5], S21, 0xd62f105d); /* 21 */ + GG (d, a, b, c, x[10], S22, 0x2441453); /* 22 */ + GG (c, d, a, b, x[15], S23, 0xd8a1e681); /* 23 */ + GG (b, c, d, a, x[ 4], S24, 0xe7d3fbc8); /* 24 */ + GG (a, b, c, d, x[ 9], S21, 0x21e1cde6); /* 25 */ + GG (d, a, b, c, x[14], S22, 0xc33707d6); /* 26 */ + GG (c, d, a, b, x[ 3], S23, 0xf4d50d87); /* 27 */ + + GG (b, c, d, a, x[ 8], S24, 0x455a14ed); /* 28 */ + GG (a, b, c, d, x[13], S21, 0xa9e3e905); /* 29 */ + GG (d, a, b, c, x[ 2], S22, 0xfcefa3f8); /* 30 */ + GG (c, d, a, b, x[ 7], S23, 0x676f02d9); /* 31 */ + GG (b, c, d, a, x[12], S24, 0x8d2a4c8a); /* 32 */ + + /* Round 3 */ + HH (a, b, c, d, x[ 5], S31, 0xfffa3942); /* 33 */ + HH (d, a, b, c, x[ 8], S32, 0x8771f681); /* 34 */ + HH (c, d, a, b, x[11], S33, 0x6d9d6122); /* 35 */ + HH (b, c, d, a, x[14], S34, 0xfde5380c); /* 36 */ + HH (a, b, c, d, x[ 1], S31, 0xa4beea44); /* 37 */ + HH (d, a, b, c, x[ 4], S32, 0x4bdecfa9); /* 38 */ + HH (c, d, a, b, x[ 7], S33, 0xf6bb4b60); /* 39 */ + HH (b, c, d, a, x[10], S34, 0xbebfbc70); /* 40 */ + HH (a, b, c, d, x[13], S31, 0x289b7ec6); /* 41 */ + HH (d, a, b, c, x[ 0], S32, 0xeaa127fa); /* 42 */ + HH (c, d, a, b, x[ 3], S33, 0xd4ef3085); /* 43 */ + HH (b, c, d, a, x[ 6], S34, 0x4881d05); /* 44 */ + HH (a, b, c, d, x[ 9], S31, 0xd9d4d039); /* 45 */ + HH (d, a, b, c, x[12], S32, 0xe6db99e5); /* 46 */ + HH (c, d, a, b, x[15], S33, 0x1fa27cf8); /* 47 */ + HH (b, c, d, a, x[ 2], S34, 0xc4ac5665); /* 48 */ + + /* Round 4 */ + II (a, b, c, d, x[ 0], S41, 0xf4292244); /* 49 */ + II (d, a, b, c, x[ 7], S42, 0x432aff97); /* 50 */ + II (c, d, a, b, x[14], S43, 0xab9423a7); /* 51 */ + II (b, c, d, a, x[ 5], S44, 0xfc93a039); /* 52 */ + II (a, b, c, d, x[12], S41, 0x655b59c3); /* 53 */ + II (d, a, b, c, x[ 3], S42, 0x8f0ccc92); /* 54 */ + II (c, d, a, b, x[10], S43, 0xffeff47d); /* 55 */ + II (b, c, d, a, x[ 1], S44, 0x85845dd1); /* 56 */ + II (a, b, c, d, x[ 8], S41, 0x6fa87e4f); /* 57 */ + II (d, a, b, c, x[15], S42, 0xfe2ce6e0); /* 58 */ + II (c, d, a, b, x[ 6], S43, 0xa3014314); /* 59 */ + II (b, c, d, a, x[13], S44, 0x4e0811a1); /* 60 */ + II (a, b, c, d, x[ 4], S41, 0xf7537e82); /* 61 */ + II (d, a, b, c, x[11], S42, 0xbd3af235); /* 62 */ + II (c, d, a, b, x[ 2], S43, 0x2ad7d2bb); /* 63 */ + II (b, c, d, a, x[ 9], S44, 0xeb86d391); /* 64 */ + + + state[0] += a; + state[1] += b; + state[2] += c; + state[3] += d; + + /* Zeroize sensitive information. */ + memset (x, 0, sizeof (x)); +} + +/* Encodes input (UINT4) into output (unsigned char). Assumes len is + * a multiple of 4. + */ +static void Encode (unsigned char *output, unsigned long int *input, + unsigned int len) { + unsigned int i, j; + + for (i = 0, j = 0; j < len; i++, j += 4) { + output[j] = (unsigned char)(input[i] & 0xff); + output[j+1] = (unsigned char)((input[i] >> 8) & 0xff); + output[j+2] = (unsigned char)((input[i] >> 16) & 0xff); + output[j+3] = (unsigned char)((input[i] >> 24) & 0xff); + } +} + +/* Decodes input (unsigned char) into output (UINT4). Assumes len is + * a multiple of 4. + */ +static void Decode (unsigned long int *output, unsigned char *input, + unsigned int len) { + unsigned int i, j; + + for (i = 0, j = 0; j < len; i++, j += 4) { + output[i] = ((unsigned long int)input[j]) | + (((unsigned long int)input[j+1]) << 8) | + (((unsigned long int)input[j+2]) << 16) | + (((unsigned long int)input[j+3]) << 24); + } +} + +char *WardrobeMd5Calc (char *string) { + MD5_CTX context; + unsigned char digest[16]; + size_t i; + char *ret = calloc (WARDROBE_MD5_DIGEST_LEN + 1, sizeof (*ret)); + + MD5Init (&context); + MD5Update (&context, (unsigned char *) string, strlen (string)); + MD5Final (digest, &context); + + for (i = 0; i < 16; i++) { + snprintf (ret+i*2, 2 + 1, "%02x", digest[i]); + } + return ret; +} + diff --git a/libwardrobe/src/md5.h b/libwardrobe/src/md5.h new file mode 100644 index 0000000..5499524 --- /dev/null +++ b/libwardrobe/src/md5.h @@ -0,0 +1,25 @@ +/* +Copyright (c) 2008 Lars-Dominik Braun + +Permission is hereby granted, free of charge, to any person obtaining a copy +of this software and associated documentation files (the "Software"), to deal +in the Software without restriction, including without limitation the rights +to use, copy, modify, merge, publish, distribute, sublicense, and/or sell +copies of the Software, and to permit persons to whom the Software is +furnished to do so, subject to the following conditions: + +The above copyright notice and this permission notice shall be included in +all copies or substantial portions of the Software. + +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE +AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER +LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, +OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN +THE SOFTWARE. +*/ + +#define WARDROBE_MD5_DIGEST_LEN 32 + +char *WardrobeMd5Calc (char *string); diff --git a/libwardrobe/src/wardrobe.h b/libwardrobe/src/wardrobe.h new file mode 100644 index 0000000..926f4df --- /dev/null +++ b/libwardrobe/src/wardrobe.h @@ -0,0 +1,31 @@ +/* +Copyright (c) 2008 Lars-Dominik Braun + +Permission is hereby granted, free of charge, to any person obtaining a copy +of this software and associated documentation files (the "Software"), to deal +in the Software without restriction, including without limitation the rights +to use, copy, modify, merge, publish, distribute, sublicense, and/or sell +copies of the Software, and to permit persons to whom the Software is +furnished to do so, subject to the following conditions: + +The above copyright notice and this permission notice shall be included in +all copies or substantial portions of the Software. + +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE +AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER +LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, +OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN +THE SOFTWARE. +*/ + +/* public api, not stable yet */ + +void WardrobeInit (WardrobeHandle_t *wh); +void WardrobeSongInit (WardrobeSong_t *ws); +void WardrobeSongDestroy (WardrobeSong_t *ws); +void WardrobeDestroy (WardrobeHandle_t *wh); +WardrobeReturn_t WardrobeSubmit (WardrobeHandle_t *wh, + WardrobeSong_t *ws); +char *WardrobeErrorToString (WardrobeReturn_t ret); -- cgit v1.2.3