Strips certain HTML tags out of a buffer

gistfile1.c

void stripHtmlTag( char* htmlBuffer, char* openTag, char* closeTag )
{
    char tmpBuffer[HTTP_RESPONSE_SIZE] = "";
    char* start = NULL;
    char* end = NULL;
    char* p = NULL;
    int bytes = -1;
    
    p = htmlBuffer;
    
    while( (start = strstr(p,openTag)) != NULL ) {
        // Find the closing tag
        end = strstr(start,closeTag);
        
        // There isn't a matching tag, bad!
        if( end == NULL ) { 
            strncat(tmpBuffer,p,strlen(p));
            break;
        }
        
        // Copy up until the start of the tag
        bytes = (int)( start - p );
        strncat(tmpBuffer,p,bytes);
        
        // Advance the pointer
        start += strlen(openTag);
        
        // Copy the text from inbetween the tags
        bytes = (int)( end - start );
        strncat(tmpBuffer,start,bytes);
        
        // Advance the pointer
        p += (int)( (end + strlen(closeTag)) - p );
    }
    
    // No tags were found
    if( strlen(tmpBuffer) == 0 ) {
        return;
    }
    
    // Blank the old contents
    memset(htmlBuffer,0,sizeof(htmlBuffer));
    strcpy(htmlBuffer,tmpBuffer);
}