322 lines
6.8 KiB
C
322 lines
6.8 KiB
C
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/*
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* File : sz.c
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* the implemention of sending files to the remote computers
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* through the zmodem protocol.
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* Change Logs:
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* Date Author Notes
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* 2011-03-29 itspy
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*/
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#include <rtthread.h>
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#include <finsh.h>
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#include <shell.h>
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#include <rtdef.h>
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#include <dfs.h>
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#include <dfs_file.h>
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#include <dfs_posix.h>
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#include "zdef.h"
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static rt_uint8_t TX_BUFFER[TX_BUFFER_SIZE]; /* sender buffer */
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static rt_uint8_t file_cnt = 0; /* count of number of files opened */
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static rt_uint8_t Rxflags = 0; /* rx parameter flags */
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static rt_uint8_t ZF2_OP; /* file transfer option */
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void zs_start(char *path);
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static void zsend_init(void);
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static rt_err_t zsend_files(struct zfile *zf);
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static rt_err_t zsend_file(struct zfile *zf, rt_uint8_t *buf, rt_uint16_t len);
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static rt_err_t zsend_file_data(struct zfile *zf);
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static rt_uint16_t zfill_buffer(struct zfile *zf, rt_uint8_t *buf, rt_uint16_t size);
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static rt_err_t zget_sync(void);
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static void zsay_bibi(void);
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/* start zmodem send process */
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void zs_start(char *path)
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{
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struct zfile *zf;
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rt_err_t res = RT_ERROR;
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char *p,*q;
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zf = rt_malloc(sizeof(struct zfile));
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if (zf == RT_NULL)
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{
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rt_kprintf("zf: out of memory\r\n");
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return;
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}
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rt_kprintf("\r\nsz: ready...\r\n"); /* here ready to send things */
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memset(zf, 0, sizeof(struct zfile));
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zf->fname = path;
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zf->fd = -1;
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res = zsend_files(zf);
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p = zf->fname;
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for (;;)
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{
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q = strstr(p,"/");
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if (q == RT_NULL) break;
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p = q+1;
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}
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if (res == RT_EOK)
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{
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rt_kprintf("\r\nfile: %s \r\nsize: %ld bytes\r\nsend completed.\r\n",
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p,zf->bytes_received);
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}
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else
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{
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rt_kprintf("\r\nfile: %s \r\nsize: 0 bytes\r\nsend failed.\r\n",p);
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}
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rt_free(zf);
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return;
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}
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/* init the parameters */
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static void zsend_init(void)
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{
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rt_err_t res = -RT_ERROR;
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zinit_parameter();
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for(;;) /* wait ZPAD */
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{
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res = zread_line(800);
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if (res == ZPAD) break;
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}
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for (;;)
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{
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res = zget_header(rx_header);
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if (res == ZRINIT) break;
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}
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if ((rx_header[ZF1] & ZRQNVH))
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{
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zput_pos(0x80L); /* Show we can var header */
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zsend_hex_header(ZRQINIT, tx_header);
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}
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Rxflags = rx_header[ZF0] & 0377;
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if (Rxflags & CANFC32) Txfcs32 = 1; /* used 32bits CRC check */
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if (ZF2_OP == ZTRLE && (Rxflags & CANRLE)) /* for RLE packet */
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Txfcs32 = 2;
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else
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ZF2_OP = 0;
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/* send SINIT cmd */
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return;
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}
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/* send files */
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static rt_err_t zsend_files(struct zfile *zf)
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{
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char *p,*q;
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char *str = "/";
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struct stat finfo;
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rt_err_t res = -RT_ERROR;
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if (zf->fname == RT_NULL)
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{
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rt_kprintf("\r\nerror: no file to be send.\r\n");
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return res;
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}
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if ((zf->fd=open(zf->fname, DFS_O_RDONLY,0)) <0)
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{
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rt_kprintf("\r\ncan not open file:%s\r\n",zf->fname+1);
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return res;
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}
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zf->file_end = 0;
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++file_cnt;
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/* extract file name */
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p = zf->fname;
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for (;;)
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{
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q = strstr(p,str);
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if (q == RT_NULL) break;
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p = q+1;
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}
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q = (char*)TX_BUFFER;
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for (;;)
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{
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*q++ = *p++;
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if (*p == 0) break;
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}
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*q++ = 0;
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p=q;
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while (q < (char*)(TX_BUFFER + 1024))
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*q++ = 0;
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/* get file attributes */
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fstat(zf->fd,&finfo);
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Left_sizes += finfo.st_size;
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rt_sprintf(p, "%lu %lo %o 3 %d %ld", (long)finfo.st_size, finfo.st_mtime,
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finfo.st_mode, file_cnt, Left_sizes);
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Left_sizes -= finfo.st_size;
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TX_BUFFER[127] = (finfo.st_size + 127) >>7;
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TX_BUFFER[126] = (finfo.st_size + 127) >>15;
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zsend_init();
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/* start sending files */
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res = zsend_file(zf,TX_BUFFER, (p-(char*)TX_BUFFER)+strlen(p)+1);
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zsay_bibi();
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close(zf->fd);
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return res;
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}
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/* send file name and related info */
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static rt_err_t zsend_file(struct zfile *zf, rt_uint8_t *buf, rt_uint16_t len)
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{
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rt_uint8_t cnt;
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rt_err_t res = -RT_ERROR;
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for (cnt=0;cnt<5;cnt++)
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{
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tx_header[ZF0] = ZF0_CMD; /* file conversion option */
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tx_header[ZF1] = ZF1_CMD; /* file management option */
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tx_header[ZF2] = (ZF3_CMD|ZF2_OP); /* file transfer option */
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tx_header[ZF3] = ZF3_CMD;
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zsend_bin_header(ZFILE, tx_header);
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zsend_bin_data(buf, len, ZCRCW);
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loop:
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res = zget_header(rx_header);
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switch (res)
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{
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case ZRINIT:
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while ((res = zread_line(50)) > 0)
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{
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if (res == ZPAD)
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{
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goto loop;
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}
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}
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break;
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case ZCAN:
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case TIMEOUT:
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case ZABORT:
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case ZFIN:
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break;
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case -RT_ERROR:
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case ZNAK:
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break;
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case ZCRC: /* no CRC request */
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goto loop;
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case ZFERR:
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case ZSKIP:
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break;
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case ZRPOS: /* here we want */
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zget_pos(Rxpos);
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Txpos = Rxpos;
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return(zsend_file_data(zf));
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default:
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break;
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}
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}
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return res;
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}
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/* send the file data */
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static rt_err_t zsend_file_data(struct zfile *zf)
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{
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rt_int16_t cnt;
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rt_uint8_t cmd;
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rt_err_t res = -RT_ERROR;
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/* send ZDATA packet, start to send data */
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start_send:
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zput_pos(Txpos);
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zsend_bin_header(ZDATA, tx_header);
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do
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{
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cnt = zfill_buffer(zf,TX_BUFFER,RX_BUFFER_SIZE);
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if (cnt < RX_BUFFER_SIZE )
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cmd = ZCRCE;
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else
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cmd = ZCRCG;
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zsend_bin_data(TX_BUFFER, cnt, cmd);
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zf->bytes_received= Txpos += cnt;
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if (cmd == ZCRCW)
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goto get_syn1;
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} while (cnt == RX_BUFFER_SIZE);
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for (;;) /* get ack and check if send finish */
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{
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zput_pos(Txpos);
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zsend_bin_header(ZEOF, tx_header);
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get_syn1:
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res = zget_sync();
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switch (res)
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{
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case ZACK:
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goto get_syn1;
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case ZNAK:
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continue;
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case ZRPOS: /* resend here */
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lseek(zf->fd,Txpos,0);
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goto start_send;
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case ZRINIT: /* send finish,then begin to send next file */
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return RT_EOK;
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case ZSKIP:
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case -RT_ERROR:
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return res;
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default:
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return res;
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}
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}
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}
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/* fill file data to buffer*/
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static rt_uint16_t zfill_buffer(struct zfile *zf, rt_uint8_t *buf, rt_uint16_t size)
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{
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return (read(zf->fd,buf,size));
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}
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/* wait sync(ack) from the receiver */
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static rt_err_t zget_sync(void)
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{
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rt_err_t res = -RT_ERROR;
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for (;;)
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{
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res = zget_header(rx_header);
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switch (res)
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{
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case ZCAN:
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case ZABORT:
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case ZFIN:
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case TIMEOUT:
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return -RT_ERROR;
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case ZRPOS: /* get pos, need to resend */
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zget_pos(Rxpos);
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Txpos = Rxpos;
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return res;
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case ZACK:
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return res;
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case ZRINIT: /* get ZRINIT indicate that the prev file send completed */
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return res;
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case ZSKIP:
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return res;
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case -RT_ERROR:
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default:
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zsend_bin_header(ZNAK, tx_header);
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continue;
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}
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}
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}
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/* say "bibi" to the receiver */
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static void zsay_bibi(void)
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{
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for (;;)
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{
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zput_pos(0L); /* reninit position of next file*/
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zsend_hex_header(ZFIN, tx_header); /* send finished session cmd */
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switch (zget_header(rx_header))
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{
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case ZFIN:
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zsend_line('O');
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zsend_line('O');
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case ZCAN:
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case TIMEOUT:
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return;
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}
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}
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}
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/* end of sz.c */
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