esp-link

"; // this method is for flash writing and erasing the page // write is incremental, so whenever a page border is reached, the next page will be erased int ICACHE_FLASH_ATTR webServerSetupWriteFlash( int addr, void * data, int length ) { int end_addr = addr + length; if( end_addr >= getUserPageSectionEnd() ) { os_printf("No more space in the flash!\n"); return 1; } void * free_ptr = 0; if(( length & 3 ) != 0 ) // ESP8266 always writes 4 bytes, so the remaining ones should be oxFF-ed out { free_ptr = os_malloc(length + 4); os_memset(free_ptr, 0xFF, length + 4); os_memcpy(free_ptr, data, length); data = free_ptr; } int ptr = 0; while( addr < end_addr ) { if (addr % SPI_FLASH_SEC_SIZE == 0){ spi_flash_erase_sector(addr/SPI_FLASH_SEC_SIZE); } int max = (addr | (SPI_FLASH_SEC_SIZE - 1)) + 1; int len = end_addr - addr; if( end_addr > max ) len = max - addr; spi_flash_write( addr, (uint32_t *)((char *)data + ptr), len ); ptr += len; addr += len; } if( free_ptr != 0 ) os_free(free_ptr); return 0; } // debug code void ICACHE_FLASH_ATTR dumpFlash( int end ) { int dump = getUserPageSectionStart(); while( dump < end ) { char buffer[16]; spi_flash_read(dump, (uint32_t *)buffer, sizeof(buffer)); char dmpstr[sizeof(buffer)*3]; os_sprintf(dmpstr, "%06X: ", dump); for(int i=0; i < sizeof(buffer); i++ ) os_sprintf(dmpstr + os_strlen(dmpstr), "%02X ", buffer[i]); os_printf("%s\n", dmpstr); dump += sizeof(buffer); } } // multipart callback for uploading user defined pages int ICACHE_FLASH_ATTR webServerSetupMultipartCallback(MultipartCmd cmd, char *data, int dataLen, int position) { switch(cmd) { case FILE_UPLOAD_START: upload_position = getUserPageSectionStart(); header_position = upload_position; break; case FILE_START: { html_header_len = 0; // write the starting block on esp-fs EspFsHeader hdr; hdr.magic = 0xFFFFFFFF; // espfs magic is invalid during upload hdr.flags = 0; hdr.compression = 0; int len = dataLen + 1; while(( len & 3 ) != 0 ) len++; hdr.nameLen = len; hdr.fileLenComp = hdr.fileLenDecomp = 0xFFFFFFFF; header_position = upload_position; if( webServerSetupWriteFlash( upload_position, (uint32_t *)(&hdr), sizeof(EspFsHeader) ) ) return 1; upload_position += sizeof(EspFsHeader); char nameBuf[len]; os_memset(nameBuf, 0, len); os_memcpy(nameBuf, data, dataLen); if( webServerSetupWriteFlash( upload_position, (uint32_t *)(nameBuf), len ) ) return 1; upload_position += len; // add header to HTML files if( ( dataLen > 5 ) && ( os_strcmp(data + dataLen - 5, ".html") == 0 ) ) // if the file ends with .html, wrap into an espfs image { html_header_len = os_strlen(HTML_HEADER) & ~3; // upload only 4 byte aligned part char buf[html_header_len]; os_memcpy(buf, HTML_HEADER, html_header_len); if( webServerSetupWriteFlash( upload_position, (uint32_t *)(buf), html_header_len ) ) return 1; upload_position += html_header_len; } } break; case FILE_DATA: if( webServerSetupWriteFlash( upload_position, data, dataLen ) ) return 1; upload_position += dataLen; break; case FILE_DONE: { // write padding after the file uint8_t pad_cnt = (4 - position) & 3; if( pad_cnt ) { uint32_t pad = 0; if( webServerSetupWriteFlash( upload_position, &pad, pad_cnt ) ) return 1; upload_position += pad_cnt; } EspFsHeader hdr; hdr.magic = ESPFS_MAGIC; hdr.fileLenComp = hdr.fileLenDecomp = position + html_header_len; // restore ESPFS magic spi_flash_write( header_position + ((char *)&hdr.magic - (char*)&hdr), (uint32_t *)&hdr.magic, sizeof(uint32_t) ); // set file size spi_flash_write( header_position + ((char *)&hdr.fileLenComp - (char*)&hdr), (uint32_t *)&hdr.fileLenComp, sizeof(uint32_t) ); spi_flash_write( header_position + ((char *)&hdr.fileLenDecomp - (char*)&hdr), (uint32_t *)&hdr.fileLenDecomp, sizeof(uint32_t) ); } break; case FILE_UPLOAD_DONE: { // write the termination block EspFsHeader hdr; hdr.magic = ESPFS_MAGIC; hdr.flags = 1; hdr.compression = 0; hdr.nameLen = 0; hdr.fileLenComp = hdr.fileLenDecomp = 0; if( webServerSetupWriteFlash( upload_position, (uint32_t *)(&hdr), sizeof(EspFsHeader) ) ) return 1; upload_position += sizeof(EspFsHeader); WEB_Init(); // reload the content } break; } return 0; } MultipartCtx * webServerContext = NULL; // multipart upload context for web server // this callback is called when user uploads the web-page int ICACHE_FLASH_ATTR cgiWebServerSetupUpload(HttpdConnData *connData) { if( webServerContext == NULL ) webServerContext = multipartCreateContext( webServerSetupMultipartCallback ); return multipartProcess(webServerContext, connData); }