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Diffstat (limited to 'Utilities/cmcurl/base64.c')
-rw-r--r-- | Utilities/cmcurl/base64.c | 366 |
1 files changed, 0 insertions, 366 deletions
diff --git a/Utilities/cmcurl/base64.c b/Utilities/cmcurl/base64.c deleted file mode 100644 index aa03f83..0000000 --- a/Utilities/cmcurl/base64.c +++ /dev/null @@ -1,366 +0,0 @@ -/*************************************************************************** - * _ _ ____ _ - * Project ___| | | | _ \| | - * / __| | | | |_) | | - * | (__| |_| | _ <| |___ - * \___|\___/|_| \_\_____| - * - * Copyright (C) 1998 - 2007, Daniel Stenberg, <daniel@haxx.se>, et al. - * - * This software is licensed as described in the file COPYING, which - * you should have received as part of this distribution. The terms - * are also available at http://curl.haxx.se/docs/copyright.html. - * - * You may opt to use, copy, modify, merge, publish, distribute and/or sell - * copies of the Software, and permit persons to whom the Software is - * furnished to do so, under the terms of the COPYING file. - * - * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY - * KIND, either express or implied. - * - * $Id$ - ***************************************************************************/ - -/* Base64 encoding/decoding - * - * Test harnesses down the bottom - compile with -DTEST_ENCODE for - * a program that will read in raw data from stdin and write out - * a base64-encoded version to stdout, and the length returned by the - * encoding function to stderr. Compile with -DTEST_DECODE for a program that - * will go the other way. - * - * This code will break if int is smaller than 32 bits - */ - -#include "setup.h" - -#include <stdlib.h> -#include <string.h> - -#define _MPRINTF_REPLACE /* use our functions only */ -#include <curl/mprintf.h> - -#include "urldata.h" /* for the SessionHandle definition */ -#include "easyif.h" /* for Curl_convert_... prototypes */ -#include "base64.h" -#include "memory.h" - -/* include memdebug.h last */ -#include "memdebug.h" - -/* ---- Base64 Encoding/Decoding Table --- */ -static const char table64[]= - "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/"; - -static void decodeQuantum(unsigned char *dest, const char *src) -{ - unsigned int x = 0; - int i; - char *found; - - for(i = 0; i < 4; i++) { - if((found = strchr(table64, src[i]))) - x = (x << 6) + (unsigned int)(found - table64); - else if(src[i] == '=') - x = (x << 6); - } - - dest[2] = (unsigned char)(x & 255); - x >>= 8; - dest[1] = (unsigned char)(x & 255); - x >>= 8; - dest[0] = (unsigned char)(x & 255); -} - -/* - * Curl_base64_decode() - * - * Given a base64 string at src, decode it and return an allocated memory in - * the *outptr. Returns the length of the decoded data. - */ -size_t Curl_base64_decode(const char *src, unsigned char **outptr) -{ - int length = 0; - int equalsTerm = 0; - int i; - int numQuantums; - unsigned char lastQuantum[3]; - size_t rawlen=0; - unsigned char *newstr; - - *outptr = NULL; - - while((src[length] != '=') && src[length]) - length++; - /* A maximum of two = padding characters is allowed */ - if(src[length] == '=') { - equalsTerm++; - if(src[length+equalsTerm] == '=') - equalsTerm++; - } - numQuantums = (length + equalsTerm) / 4; - - /* Don't allocate a buffer if the decoded length is 0 */ - if (numQuantums <= 0) - return 0; - - rawlen = (numQuantums * 3) - equalsTerm; - - /* The buffer must be large enough to make room for the last quantum - (which may be partially thrown out) and the zero terminator. */ - newstr = malloc(rawlen+4); - if(!newstr) - return 0; - - *outptr = newstr; - - /* Decode all but the last quantum (which may not decode to a - multiple of 3 bytes) */ - for(i = 0; i < numQuantums - 1; i++) { - decodeQuantum((unsigned char *)newstr, src); - newstr += 3; src += 4; - } - - /* This final decode may actually read slightly past the end of the buffer - if the input string is missing pad bytes. This will almost always be - harmless. */ - decodeQuantum(lastQuantum, src); - for(i = 0; i < 3 - equalsTerm; i++) - newstr[i] = lastQuantum[i]; - - newstr[i] = 0; /* zero terminate */ - return rawlen; -} - -/* - * Curl_base64_encode() - * - * Returns the length of the newly created base64 string. The third argument - * is a pointer to an allocated area holding the base64 data. If something - * went wrong, -1 is returned. - * - */ -size_t Curl_base64_encode(struct SessionHandle *data, - const char *inp, size_t insize, char **outptr) -{ - unsigned char ibuf[3]; - unsigned char obuf[4]; - int i; - int inputparts; - char *output; - char *base64data; -#ifdef CURL_DOES_CONVERSIONS - char *convbuf; -#endif - - char *indata = (char *)inp; - - *outptr = NULL; /* set to NULL in case of failure before we reach the end */ - - if(0 == insize) - insize = strlen(indata); - - base64data = output = (char*)malloc(insize*4/3+4); - if(NULL == output) - return 0; - -#ifdef CURL_DOES_CONVERSIONS - /* - * The base64 data needs to be created using the network encoding - * not the host encoding. And we can't change the actual input - * so we copy it to a buffer, translate it, and use that instead. - */ - if(data) { - convbuf = (char*)malloc(insize); - if(!convbuf) { - return 0; - } - memcpy(convbuf, indata, insize); - if(CURLE_OK != Curl_convert_to_network(data, convbuf, insize)) { - free(convbuf); - return 0; - } - indata = convbuf; /* switch to the converted buffer */ - } -#else - (void)data; -#endif - - while(insize > 0) { - for (i = inputparts = 0; i < 3; i++) { - if(insize > 0) { - inputparts++; - ibuf[i] = *indata; - indata++; - insize--; - } - else - ibuf[i] = 0; - } - - obuf[0] = (unsigned char) ((ibuf[0] & 0xFC) >> 2); - obuf[1] = (unsigned char) (((ibuf[0] & 0x03) << 4) | \ - ((ibuf[1] & 0xF0) >> 4)); - obuf[2] = (unsigned char) (((ibuf[1] & 0x0F) << 2) | \ - ((ibuf[2] & 0xC0) >> 6)); - obuf[3] = (unsigned char) (ibuf[2] & 0x3F); - - switch(inputparts) { - case 1: /* only one byte read */ - snprintf(output, 5, "%c%c==", - table64[obuf[0]], - table64[obuf[1]]); - break; - case 2: /* two bytes read */ - snprintf(output, 5, "%c%c%c=", - table64[obuf[0]], - table64[obuf[1]], - table64[obuf[2]]); - break; - default: - snprintf(output, 5, "%c%c%c%c", - table64[obuf[0]], - table64[obuf[1]], - table64[obuf[2]], - table64[obuf[3]] ); - break; - } - output += 4; - } - *output=0; - *outptr = base64data; /* make it return the actual data memory */ - -#ifdef CURL_DOES_CONVERSIONS - if(data) - free(convbuf); -#endif - return strlen(base64data); /* return the length of the new data */ -} -/* ---- End of Base64 Encoding ---- */ - -/************* TEST HARNESS STUFF ****************/ - - -#ifdef TEST_ENCODE -/* encoding test harness. Read in standard input and write out the length - * returned by Curl_base64_encode, followed by the base64'd data itself - */ -#include <stdio.h> - -#define TEST_NEED_SUCK -void *suck(int *); - -int main(int argc, char **argv, char **envp) -{ - char *base64; - size_t base64Len; - unsigned char *data; - int dataLen; - struct SessionHandle *handle = NULL; - -#ifdef CURL_DOES_CONVERSIONS - /* get a Curl handle so Curl_base64_encode can translate properly */ - handle = curl_easy_init(); - if(handle == NULL) { - fprintf(stderr, "Error: curl_easy_init failed\n"); - return 0; - } -#endif - data = (unsigned char *)suck(&dataLen); - base64Len = Curl_base64_encode(handle, data, dataLen, &base64); - - fprintf(stderr, "%d\n", base64Len); - fprintf(stdout, "%s\n", base64); - - free(base64); free(data); -#ifdef CURL_DOES_CONVERSIONS - curl_easy_cleanup(handle); -#endif - return 0; -} -#endif - -#ifdef TEST_DECODE -/* decoding test harness. Read in a base64 string from stdin and write out the - * length returned by Curl_base64_decode, followed by the decoded data itself - * - * gcc -DTEST_DECODE base64.c -o base64 mprintf.o memdebug.o - */ -#include <stdio.h> - -#define TEST_NEED_SUCK -void *suck(int *); - -int main(int argc, char **argv, char **envp) -{ - char *base64; - int base64Len; - unsigned char *data; - int dataLen; - int i, j; -#ifdef CURL_DOES_CONVERSIONS - /* get a Curl handle so main can translate properly */ - struct SessionHandle *handle = curl_easy_init(); - if(handle == NULL) { - fprintf(stderr, "Error: curl_easy_init failed\n"); - return 0; - } -#endif - - base64 = (char *)suck(&base64Len); - dataLen = Curl_base64_decode(base64, &data); - - fprintf(stderr, "%d\n", dataLen); - - for(i=0; i < dataLen; i+=0x10) { - printf("0x%02x: ", i); - for(j=0; j < 0x10; j++) - if((j+i) < dataLen) - printf("%02x ", data[i+j]); - else - printf(" "); - - printf(" | "); - - for(j=0; j < 0x10; j++) - if((j+i) < dataLen) { -#ifdef CURL_DOES_CONVERSIONS - if(CURLE_OK != - Curl_convert_from_network(handle, &data[i+j], (size_t)1)) - data[i+j] = '.'; -#endif /* CURL_DOES_CONVERSIONS */ - printf("%c", ISGRAPH(data[i+j])?data[i+j]:'.'); - } else - break; - puts(""); - } - -#ifdef CURL_DOES_CONVERSIONS - curl_easy_cleanup(handle); -#endif - free(base64); free(data); - return 0; -} -#endif - -#ifdef TEST_NEED_SUCK -/* this function 'sucks' in as much as possible from stdin */ -void *suck(int *lenptr) -{ - int cursize = 8192; - unsigned char *buf = NULL; - int lastread; - int len = 0; - - do { - cursize *= 2; - buf = (unsigned char *)realloc(buf, cursize); - memset(buf + len, 0, cursize - len); - lastread = fread(buf + len, 1, cursize - len, stdin); - len += lastread; - } while(!feof(stdin)); - - lenptr[0] = len; - return (void *)buf; -} -#endif |