httpd.c

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#include "common/common.h"


#define HTTPD_INCLUDE
#include "protocol/HTTP/httpd.h"
#undef HTTPD_INCLUDE

extern char  homepage_default[];
char tx_buf[MAX_URI_SIZE];
char rx_buf[MAX_URI_SIZE];
uint8 BUFPUB[1024];

void replacetochar(
    char * str,         
    char oldchar,   
    char newchar    
    )
{
    int x;
    for (x = 0; str[x]; x++) 
        if (str[x] == oldchar) str[x] = newchar;    
}
char C2D(
    uint8 c 
    )
{
    if (c >= '0' && c <= '9')
        return c - '0';
    if (c >= 'a' && c <= 'f')
        return 10 + c -'a';
    if (c >= 'A' && c <= 'F')
        return 10 + c -'A';

    return (char)c;
}

void unescape_http_url(
    char * url  
    )
{
  int x, y;
  
  for (x = 0, y = 0; url[y]; ++x, ++y) {
    if ((url[x] = url[y]) == '%') {
      url[x] = C2D(url[y+1])*0x10+C2D(url[y+2]);
      y+=2;
    }
  }
  url[x] = '\0';
}


void make_http_response_head(
    uint8 * buf,    
    int8 type,  
    uint32 len  
    )
{
  char * head;
  char tmp[10];
  
                  
  /*  file type*/
  if      (type == PTYPE_HTML)  head = RES_HTMLHEAD_OK;
  else if (type == PTYPE_CGI)   head = RES_HTMLHEAD_OK;
  else if (type == PTYPE_PL)    head = RES_HTMLHEAD_OK;
  else if (type == PTYPE_GIF)   head = RES_GIFHEAD_OK;
  else if (type == PTYPE_TEXT)  head = RES_TEXTHEAD_OK;
  else if (type == PTYPE_JPEG)  head = RES_JPEGHEAD_OK;
  else if (type == PTYPE_FLASH) head = RES_FLASHHEAD_OK;
  else if (type == PTYPE_MPEG)  head = RES_MPEGHEAD_OK;
  else if (type == PTYPE_PDF)   head = RES_PDFHEAD_OK;
  #ifdef HTTPD_DEBUG    
  else  PRINTLN("\r\n\r\n-MAKE HEAD UNKNOWN-\r\n");
  #endif

  sprintf(tmp,"%ld", len);  
  strcpy((char*)buf, head);
  strcat((char*)buf, tmp);
  strcat((char*)buf, "\r\n\r\n");
}


void find_http_uri_type(
    uint8 * type,   
    char * buf      
    ) 
{
  /* Decide type according to extention*/
  if      (strstr(buf, ".pl"))              *type = PTYPE_PL;
  else if (strstr(buf, ".cgi")  || strstr(buf,".CGI"))  *type = PTYPE_CGI;
  else if (strstr(buf, ".html") || strstr(buf,".htm"))  *type = PTYPE_HTML;
  else if (strstr(buf, ".gif"))             *type = PTYPE_GIF;
  else if (strstr(buf, ".text") || strstr(buf,".txt"))  *type = PTYPE_TEXT;
  else if (strstr(buf, ".jpeg") || strstr(buf,".jpg"))  *type = PTYPE_JPEG;
  else if (strstr(buf, ".swf"))             *type = PTYPE_FLASH;
  else if (strstr(buf, ".mpeg") || strstr(buf,".mpg"))  *type = PTYPE_MPEG;
  else if (strstr(buf, ".pdf"))             *type = PTYPE_PDF;
  else if (strstr(buf, ".js")   || strstr(buf,".JS"))   *type = PTYPE_TEXT;
  else if (strstr(buf, ".xml")  || strstr(buf,".XML"))  *type = PTYPE_HTML;
  else                          *type = PTYPE_ERR;
}


void parse_http_request(
    st_http_request * request,  
    char * buf              
    )
{
  char * nexttok;
  nexttok = strtok(buf," ");
  if(!nexttok)
  {
    request->METHOD = METHOD_ERR;
    return;
  }
  if(!strcmp(nexttok, "GET") || !strcmp(nexttok,"get"))
  {
    request->METHOD = METHOD_GET;
    nexttok = strtok(NULL," ");
    #ifdef HTTPD_DEBUG
    PRINTLN("METHOD_GET");
    #endif              
  }
  else if (!strcmp(nexttok, "HEAD") || !strcmp(nexttok,"head")) 
  {
    request->METHOD = METHOD_HEAD;
    nexttok = strtok(NULL," ");
    #ifdef HTTPD_DEBUG
    PRINTLN("METHOD_HEAD");
    #endif              
  }
  else if (!strcmp(nexttok, "POST") || !strcmp(nexttok,"post"))
  {
    nexttok = strtok(NULL," ");
    request->METHOD = METHOD_POST;
    #ifdef HTTPD_DEBUG
    PRINTLN("METHOD_POST");
    #endif              
  }
  else
  {
    request->METHOD = METHOD_ERR;
    #ifdef HTTPD_DEBUG
    PRINTLN("METHOD_ERR");
    #endif              
  } 
  
  if(!nexttok)
  {
    request->METHOD = METHOD_ERR;
    #ifdef HTTPD_DEBUG
    PRINTLN("METHOD_ERR");
    #endif              
    return;
  }

  strcpy(request->URI,nexttok);
  nexttok = strtok(NULL,"\0");
  strcpy(request->param,nexttok);

  #ifdef HTTPD_DEBUG
  {
    uint16 i;
    printf("http_request->URI");
    for(i=0; i < strlen(request->URI);i++)
        printf("%c",request->URI[i]);
    printf("\r\n");
  }
  #endif                    
    
}


unsigned char* get_http_param_value(char* uri, char* param_name)
{

  char * name=0; 
  uint8 *ret=BUFPUB;
  if(!uri || !param_name) return 0;
  if((name = strstr(uri,param_name)))
  {
    name += strlen(param_name) + 1; 
    char* pos2=strstr(name,"&");
    if(!pos2) 
    {
      pos2=name+strlen(name);
    }
    uint16 len=0;
    len = pos2-name;
 
    if(len)
    {
      ret[len]=0;
      strncpy((char*)ret,name,len);
      unescape_http_url((char*)ret);
      replacetochar((char*)ret,'+',' ');
      //ret[len]=0;
      //ret[strlen((int8*)ret)]=0;
    }
    else
      ret[0]=0;
  }
  else
    return 0;
  return ret;       
}

unsigned char* get_http_uri_name(char* uri)
{
    char* uri_name;
    char* tempURI=(char*)BUFPUB;

    if(!uri) return 0;

    memset (tempURI, 0, MAX_URI_SIZE);  
    strcpy(tempURI,uri);
    
    uri_name = strtok(tempURI," ?");
    
    if(strcmp(uri_name,"/")) uri_name++;

#ifdef HTTPD_DEBUG
    PRINTLN1("uri_name=%s",uri_name);
#endif  

    return (uint8*)uri_name;
}