Fork of wolfSSL's HTTPClient fork. Fork!
Dependents: exosite_http_example exosite_http_example
Fork of HTTPClient by
data/HTTPMap.cpp
- Committer:
- PBarrett
- Date:
- 2015-01-20
- Revision:
- 32:7716672463b9
- Parent:
- 16:1f743885e7de
File content as of revision 32:7716672463b9:
/* HTTPMap.cpp */ /* Copyright (C) 2012 mbed.org, MIT License * * 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 "HTTPMap.h" #include <cstring> #include <cctype> #define OK 0 #define MIN(x,y) (((x)<(y))?(x):(y)) #define MAX(x,y) (((x)>(y))?(x):(y)) using std::strncpy; using std::memcpy; using std::strcmp; using std::strlen; static char UrlDecode(char* str, size_t& offset); static char HexDecode(char c); HTTPMap::HTTPMap() : m_pos(0), m_count(0) { } HTTPMap::HTTPMap(char* str, size_t size) : m_str(str), m_size(size), m_pos(0), m_read_pos(0) { } void HTTPMap::put(const char* key, const char* value) { if(m_count >= HTTPMAP_TABLE_SIZE) { return; } m_keys[m_count] = key; m_values[m_count] = value; m_count++; } void HTTPMap::clear() { m_count = 0; m_pos = 0; } /*virtual*/ void HTTPMap::readReset() { m_pos = 0; } /*virtual*/ int HTTPMap::read(char* buf, size_t len, size_t* pReadLen) { if(m_pos >= m_count) { *pReadLen = 0; m_pos = 0; return OK; } //URL encode char* out = buf; const char* in = m_keys[m_pos]; if( (m_pos != 0) && (out - buf < len - 1) ) { *out='&'; out++; } while( (*in != '\0') && (out - buf < len - 3) ) { if (std::isalnum(*in) || *in == '-' || *in == '_' || *in == '.' || *in == '~') { *out = *in; out++; } else if( *in == ' ' ) { *out='+'; out++; } else { char hex[] = "0123456789abcdef"; *out='%'; out++; *out=hex[(*in>>4)&0xf]; out++; *out=hex[(*in)&0xf]; out++; } in++; } if( out - buf < len - 1 ) { *out='='; out++; } in = m_values[m_pos]; while( (*in != '\0') && (out - buf < len - 3) ) { if (std::isalnum(*in) || *in == '-' || *in == '_' || *in == '.' || *in == '~') { *out = *in; out++; } else if( *in == ' ' ) { *out='+'; out++; } else { char hex[] = "0123456789abcdef"; *out='%'; out++; *out=hex[(*in>>4)&0xf]; out++; *out=hex[(*in)&0xf]; out++; } in++; } *pReadLen = out - buf; m_pos++; return OK; } /*virtual*/ int HTTPMap::getDataType(char* type, size_t maxTypeLen) //Internet media type for Content-Type header { strncpy(type, "application/x-www-form-urlencoded", maxTypeLen-1); type[maxTypeLen-1] = '\0'; return OK; } /*virtual*/ bool HTTPMap::getIsChunked() //For Transfer-Encoding header { return false; ////Data is computed one key/value pair at a time } /*virtual*/ size_t HTTPMap::getDataLen() //For Content-Length header { size_t count = 0; for(size_t i = 0; i< m_count; i++) { //URL encode const char* in = m_keys[i]; if( i != 0 ) { count++; } while( (*in != '\0') ) { if (std::isalnum(*in) || *in == '-' || *in == '_' || *in == '.' || *in == '~') { count++; } else if( *in == ' ' ) { count++; } else { count+=3; } in++; } count ++; in = m_values[i]; while( (*in != '\0') ) { if (std::isalnum(*in) || *in == '-' || *in == '_' || *in == '.' || *in == '~') { count++; } else if( *in == ' ' ) { count++; } else { count+=3; } in++; } } return count; } /*virtual*/ void HTTPMap::writeReset() { m_pos = 0; } /*virtual*/ int HTTPMap::write(const char* buf, size_t len) { size_t writeLen = MIN(len, m_size - 1 - m_pos); memcpy(m_str + m_pos, buf, writeLen); m_pos += writeLen; m_str[m_pos] = '\0'; return OK; } /*virtual*/ void HTTPMap::setDataType(const char* type) //Internet media type from Content-Type header { } /*virtual*/ void HTTPMap::setIsChunked(bool chunked) //From Transfer-Encoding header { } /*virtual*/ void HTTPMap::setDataLen(size_t len) //From Content-Length header, or if the transfer is chunked, next chunk length { } bool HTTPMap::pop(char*& key, char*& value) { size_t j = m_read_pos; key = &m_str[m_read_pos]; while(m_read_pos < m_size && m_str[m_read_pos] != '=' && m_str[m_read_pos] != '\0') { m_str[j++] = UrlDecode(m_str, m_read_pos); m_read_pos++; } if(m_read_pos >= m_size || m_str[m_read_pos] == '\0') { key = NULL; value = NULL; return false; } m_str[j++] = '\0'; j = ++m_read_pos; value = &m_str[m_read_pos]; while(m_read_pos < m_size-1 && m_str[m_read_pos] != '&' && m_str[m_read_pos] != '\0') { m_str[j++] = UrlDecode(m_str, m_read_pos); m_read_pos++; } m_str[j++] = '\0'; return true; } bool HTTPMap::get(const char* key, char* val_buf, const size_t max) { size_t i, j = m_read_pos; while(j < m_size && m_str[j] != '\0') { i = 0; while(key[i] == m_str[j] && j < m_size && m_str[j] != '=' && m_str[j] != '\0') { i++; j++; } if(m_str[j] == '=') { j++; i = 0; while(i < max-1 && j < m_size && m_str[j] != '&' && m_str[j] != '\0') { val_buf[i++] = UrlDecode(m_str, j); j++; } val_buf[i] = '\0'; return true; } while(j < m_size && m_str[j] != '&' && m_str[j] != '\0') { val_buf[i++] = UrlDecode(m_str, j); j++; } if(m_str[j] == '&') j++; } return false; } static char UrlDecode(char* str, size_t& offset) { char c; if(str[offset] == '%') { c = HexDecode(str[offset+2]) | (HexDecode(str[offset+1]) << 4); offset+=2; if (c == 0) { return 0x1A; // SUB } return c; } else if(str[offset] == '+') { return ' '; } else { return str[offset]; } } static char HexDecode(char c) { if(c >= '0' && c <= '9') { return c - '0'; } else if(c >= 'A' && c <= 'F') { return(c - ('A' - 0xA)); } else if(c >= 'a' && c <= 'f') { return(c - ('a' - 0xA)); } else { return 0x00; } }