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Diffstat (limited to 'projects/ekermit-test/ekermit-test.c')
| -rw-r--r-- | projects/ekermit-test/ekermit-test.c | 167 |
1 files changed, 167 insertions, 0 deletions
diff --git a/projects/ekermit-test/ekermit-test.c b/projects/ekermit-test/ekermit-test.c new file mode 100644 index 0000000..3b71a69 --- /dev/null +++ b/projects/ekermit-test/ekermit-test.c @@ -0,0 +1,167 @@ +/* + * ekermit-test.c + * -------------- + * A test program for the E-Kermit library. + * + * Copyright (c) 2016, NORDUnet A/S All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are + * met: + * - Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * + * - Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * - Neither the name of the NORDUnet nor the names of its contributors may + * be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS + * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED + * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A + * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED + * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR + * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF + * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING + * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +/* This receives one or more files from a kermit client (e.g. C-Kermit), + * and stores them in a minimal file system on SDRAM. + */ + +#include <stdio.h> +#include <string.h> +#include <ctype.h> + +#include "stm-init.h" +#include "stm-sdram.h" +#include "sdram-malloc.h" +#include "stm-kermit.h" + +/* alignment for file allocations */ +#define ALIGN 16 + +/* maximum length of file name */ +#define NAMELEN 32 + +/* maximum number of files */ +#define NFILE 4 + +typedef struct { + char name[NAMELEN]; + uint8_t *loc; + size_t len; +} filetab_t; +filetab_t filetab[NFILE], *curfile; +int nfile; + +#ifdef DUMP +static void hexdump(uint8_t *buf, int len) +{ + for ( ; len > 0; buf += 16, len -= 16) { + int plen = (len > 16) ? 16 : len; + int i; + for (i = 0; i < plen; ++i) + printf("%02x ", buf[i]); + for ( ; i < 16; ++i) + printf(" "); + printf("| "); + for (i = 0; i < plen; ++i) + printf("%c", isprint(buf[i]) ? buf[i] : ' '); + printf("\n"); + } +} +#endif + +/* Override weak function defintions for callouts in stm-kermit.c */ + +/* Called when kermit receives an F (file) packet + */ +int kermit_openfile(unsigned char *name) +{ + if (nfile == NFILE) { + curfile = NULL; + return -1; + } + curfile = &filetab[nfile]; + strncpy(curfile->name, (char *)name, sizeof(curfile->name)); + curfile->loc = sdram_malloc(0); + if (curfile->loc == NULL) { + curfile = NULL; + return -1; + } + curfile->len = 0; + ++nfile; + return 0; +} + +/* Called when kermit's receive buffer is full, after some number of D + * (data) packets + */ +int kermit_writefile(unsigned char *buf, int len) +{ + if (curfile == NULL) + return -1; + uint8_t *writeptr = sdram_malloc(len); + if (writeptr == NULL) + return -1; + memcpy(writeptr, buf, len); + curfile->len += len; + return 0; +} + +/* Called when kermit receives a Z (EOF) packet + */ +int kermit_closefile(void) +{ + if (curfile == NULL) + return -1; + int pad = ALIGN - (curfile->len & (ALIGN - 1)); + if (sdram_malloc(pad) == NULL) + return -1; + curfile = NULL; + return 0; +} + +/* Called when kermit receives a Z (EOF) packet with a D (discard) flag + */ +int kermit_cancelfile(void) +{ + if (curfile == NULL) + return -1; + sdram_free(curfile->loc); + memset(curfile, 0, sizeof(*curfile)); + --nfile; + return 0; +} + +/* The main function is pretty simple, because the kermit library does all + * the work out of sight. + */ +int main(void) +{ + stm_init(); + sdram_init(); + + while (1) { + memset((void *)filetab, 0, sizeof(filetab)); + curfile = NULL; + nfile = 0; + kermit_main(); + for (int i = 0; i < nfile; ++i) { + filetab_t *f = &filetab[i]; + printf("%d. %-16s %p %d\n", i, f->name, f->loc, f->len); +#ifdef DUMP + hexdump(f->loc, f->len); +#endif + sdram_free(f->loc); + } + } +} |