| // Copyright (C) 2001-2005 Open Source Telecom Corporation. |
| // Copyright (C) 2006-2010 David Sugar, Tycho Softworks. |
| // |
| // This program is free software; you can redistribute it and/or modify |
| // it under the terms of the GNU General Public License as published by |
| // the Free Software Foundation; either version 2 of the License, or |
| // (at your option) any later version. |
| // |
| // This program is distributed in the hope that it will be useful, |
| // but WITHOUT ANY WARRANTY; without even the implied warranty of |
| // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| // GNU General Public License for more details. |
| // |
| // You should have received a copy of the GNU General Public License |
| // along with this program; if not, write to the Free Software |
| // Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
| // |
| // As a special exception, you may use this file as part of a free software |
| // library without restriction. Specifically, if other files instantiate |
| // templates or use macros or inline functions from this file, or you compile |
| // this file and link it with other files to produce an executable, this |
| // file does not by itself cause the resulting executable to be covered by |
| // the GNU General Public License. This exception does not however |
| // invalidate any other reasons why the executable file might be covered by |
| // the GNU General Public License. |
| // |
| // This exception applies only to the code released under the name GNU |
| // Common C++. If you copy code from other releases into a copy of GNU |
| // Common C++, as the General Public License permits, the exception does |
| // not apply to the code that you add in this way. To avoid misleading |
| // anyone as to the status of such modified files, you must delete |
| // this exception notice from them. |
| // |
| // If you write modifications of your own for GNU Common C++, it is your choice |
| // whether to permit this exception to apply to your modifications. |
| // If you do not wish that, delete this exception notice. |
| // |
| |
| #include <cc++/config.h> |
| #ifdef CCXX_WITHOUT_EXTRAS |
| #include <cc++/export.h> |
| #endif |
| #include <cc++/exception.h> |
| #include <cc++/thread.h> |
| #include <cc++/address.h> |
| #include <cc++/socket.h> |
| #ifndef CCXX_WITHOUT_EXTRAS |
| #include <cc++/export.h> |
| #endif |
| #include <cc++/url.h> |
| |
| #include <string> |
| #include <cstdio> |
| #include <cstdlib> |
| #include <fcntl.h> |
| #include <cerrno> |
| #include <iostream> |
| #ifdef WIN32 |
| #include <io.h> |
| #endif |
| #include <cctype> |
| |
| #ifdef CCXX_NAMESPACES |
| namespace ost { |
| using namespace std; |
| #endif |
| |
| static const unsigned char alphabet[65] = |
| "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/"; |
| |
| char* b64Encode(const char *source, char *dest, size_t limit) |
| { |
| b64Encode((const unsigned char*)source,strlen(source), |
| dest,limit); |
| return dest; |
| } |
| |
| char* b64Decode(char *source, char *dest) |
| { |
| size_t srcsize = strlen(source); |
| char* dst = dest?dest:source; |
| size_t dstsize = |
| b64Decode(source,(unsigned char*)dst,srcsize+1); |
| dst[dstsize] = 0; |
| return dst; |
| } |
| |
| size_t b64Encode(const unsigned char *src, size_t srcsize, |
| char *dst, size_t dstsize) |
| { |
| if (!dstsize) return 0; |
| |
| char* pdst = dst; |
| unsigned bits; |
| |
| while(srcsize >= 3 && dstsize > 4) { |
| bits = (((unsigned)src[0])<<16) | (((unsigned)src[1])<<8) |
| | ((unsigned)src[2]); |
| src += 3; |
| srcsize -= 3; |
| *(pdst++) = alphabet[bits >> 18]; |
| *(pdst++) = alphabet[(bits >> 12) & 0x3f]; |
| *(pdst++) = alphabet[(bits >> 6) & 0x3f]; |
| *(pdst++) = alphabet[bits & 0x3f]; |
| dstsize -= 4; |
| } |
| if (srcsize && dstsize > 4) { |
| bits = ((unsigned)src[0])<<16; |
| *(pdst++) = alphabet[bits >> 18]; |
| if (srcsize == 1) { |
| *(pdst++) = alphabet[(bits >> 12) & 0x3f]; |
| *(pdst++) = '='; |
| } |
| else { |
| bits |= ((unsigned)src[1])<<8; |
| *(pdst++) = alphabet[(bits >> 12) & 0x3f]; |
| *(pdst++) = alphabet[(bits >> 6) & 0x3f]; |
| } |
| *(pdst++) = '='; |
| } |
| *pdst = 0; |
| return pdst-dst; |
| } |
| |
| size_t b64Decode(const char *src, |
| unsigned char *dst, size_t dstsize) |
| { |
| char decoder[256]; |
| int i, bits, c; |
| |
| unsigned char *pdst = dst; |
| |
| for (i = 0; i < 256; ++i) |
| decoder[i] = 64; |
| for (i = 0; i < 64 ; ++i) |
| decoder[alphabet[i]] = i; |
| |
| bits = 1; |
| |
| while(*src) { |
| c = (unsigned char)(*(src++)); |
| if (c == '=') { |
| if (bits & 0x40000) { |
| if (dstsize < 2) break; |
| *(pdst++) = (bits >> 10); |
| *(pdst++) = (bits >> 2) & 0xff; |
| break; |
| } |
| if (bits & 0x1000 && dstsize) |
| *(pdst++) = (bits >> 4); |
| break; |
| } |
| // skip invalid chars |
| if (decoder[c] == 64) |
| continue; |
| bits = (bits << 6) + decoder[c]; |
| if (bits & 0x1000000) { |
| if (dstsize < 3) break; |
| *(pdst++) = (bits >> 16); |
| *(pdst++) = (bits >> 8) & 0xff; |
| *(pdst++) = (bits & 0xff); |
| bits = 1; |
| dstsize -= 3; |
| } |
| } |
| return pdst-dst; |
| } |
| |
| |
| char* urlDecode(char *source, char *dest) |
| { |
| char *ret; |
| char hex[3]; |
| |
| if(!dest) |
| dest = source; |
| else |
| *dest = 0; |
| |
| ret = dest; |
| |
| if(!source) |
| return dest; |
| |
| while(*source) { |
| switch(*source) { |
| case '+': |
| *(dest++) = ' '; |
| break; |
| case '%': |
| // NOTE: wrong input can finish with "...%" giving |
| // buffer overflow, cut string here |
| if(source[1]) { |
| hex[0] = source[1]; |
| ++source; |
| if(source[1]) { |
| hex[1] = source[1]; |
| ++source; |
| } |
| else |
| hex[1] = 0; |
| } |
| else |
| hex[0] = hex[1] = 0; |
| hex[2] = 0; |
| *(dest++) = (char)strtol(hex, NULL, 16); |
| break; |
| default: |
| *(dest++) = *source; |
| } |
| ++source; |
| } |
| *dest = 0; |
| return ret; |
| } |
| |
| char* urlEncode(const char *source, char *dest, size_t max) |
| { |
| static const char *hex = "0123456789abcdef"; |
| size_t len = 0; |
| unsigned char ch; |
| char *ret = dest; |
| |
| *dest = 0; |
| if(!source) |
| return dest; |
| |
| while(len < max - 4 && *source) { |
| ch = (unsigned char)*source; |
| if(*source == ' ') |
| *(dest++) = '+'; |
| else if(isalnum(*source) || strchr("/.-:;,", *source)) |
| *(dest++) = *source; |
| else { |
| *(dest++) = '%'; |
| // char in C++ can be more than 8bit |
| *(dest++) = hex[(ch >> 4)&0xF]; |
| *(dest++) = hex[ch % 16]; |
| } |
| ++source; |
| } |
| *dest = 0; |
| return ret; |
| } |
| |
| #if defined(DYNAMIC_LOCAL_ARRAYS) |
| |
| /** @relates URLStream |
| * Encode a STL string using base64 coding into a STL string |
| * @return base 64 encoded string |
| * @param src source string |
| */ |
| String b64Encode(const String& src) |
| { |
| size_t limit = (src.length()+2)/3*4+1; // size + null must be included |
| char buffer[limit]; |
| |
| unsigned size = b64Encode((const unsigned char *)src.c_str(), src.length(), buffer, limit); |
| buffer[size] = '\0'; |
| |
| return String(buffer); |
| } |
| |
| /** @relates URLStream |
| * Decode a STL string using base64 coding into an STL String. |
| * Destination size should be at least strlen(src)/4*3. |
| * Destination are not string terminated (It's just a octet stream). |
| * @return decoded string |
| * @param src source string |
| */ |
| String b64Decode(const String& src) |
| { |
| size_t limit = src.length()/4*3; |
| unsigned char buffer[limit+1]; |
| |
| unsigned size = b64Decode(src.c_str(), buffer, limit); |
| buffer[size] = '\0'; |
| |
| return String((char *)buffer); |
| } |
| |
| /** @relates URLStream |
| * Encode a octet stream using base64 coding into a STL string |
| * @return base 64 encoded string |
| * @param src source buffer |
| * @param srcsize source buffer size |
| */ |
| String b64Encode(const unsigned char *src, size_t srcsize) |
| { |
| size_t limit = (srcsize+2)/3*4+1; |
| char buffer[limit]; |
| |
| unsigned size = b64Encode(src, srcsize, buffer, limit); |
| buffer[size] = '\0'; |
| |
| return String(buffer); |
| } |
| |
| /** @relates URLStream |
| * Decode an STL string encoded using base64. |
| * Destination size should be at least strlen(src)/4*3. |
| * Destination are not string terminated (It's just a octet stream). |
| * @return number of octets written into destination buffer |
| * @param src source string |
| * @param dst destination octet buffer |
| * @param dstsize destination buffer size |
| */ |
| size_t b64Decode(const String& src, |
| unsigned char *dst, size_t dstsize) |
| { |
| return b64Decode(src.c_str(), dst, dstsize); |
| } |
| #endif |
| |
| #ifdef CCXX_NAMESPACES |
| } |
| #endif |