OpenWrt – Rev 1
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#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <libgen.h>
#include "mktitanimg.h"
struct checksumrecord
{
unsigned int magic;
unsigned int chksum; /* The checksum for the complete header.
Excepting the
checksum block */
};
/***************************************************************************
* void print_help(void)
***************************************************************************/
void print_help(void)
{
static char* help_page[]=
{
"mknspimg version 1.0, Texas Instruments, 2004",
"Syntax:",
" mknspimg -o outfile -i image1 image2 -a align1 align2 [-v] [-b] [-p prod_id] [-r rel_id] [-s rel_name] [-f flags]",
"Example:",
" mknspimg -o nsp_image.bin -i kernel.bin files.img -a 0 4096",
"This generates 'nsp_image.bin' from two input files aligning first to 0 and second to 4096 bytes."
};
int num_lines = sizeof(help_page)/sizeof(char*);
int i;
for(i=0; i < num_lines; i++) {
printf("%s\n", help_page[i]);
}
}
/***************************************************************************
* void mknspimg_print_hdr(NSP_IMG_HDR* p_img_hdr)
***************************************************************************/
void mknspimg_print_hdr(struct nsp_img_hdr *hdr)
{
struct nsp_img_hdr_chksum *chksum;
struct nsp_img_hdr_section_info *sect_info;
struct nsp_img_hdr_sections *section;
int i;
printf("****************** NSP Image Summary ******************\n");
printf("Magic: 0x%x\n", hdr->head.magic);
printf("Image Header Size: 0x%x bytes\n", hdr->head.hdr_size);
printf("Total Image Size: %d bytes\n", hdr->head.image_size);
printf("Product ID: 0x%x\n", hdr->head.prod_id);
printf("Release ID: 0x%x\n", hdr->head.rel_id);
printf("Version ID: 0x%x\n", hdr->head.version);
printf("Offset Info: 0x%x\n", hdr->head.info_offset);
printf("Offset Sect info: 0x%x\n", hdr->head.sect_info_offset);
printf("Offset Sections: 0x%x\n", hdr->sect_info.sections_offset);
chksum=(struct nsp_img_hdr_chksum *)(hdr+hdr->head.chksum_offset);
printf("Header Checksum: 0x%x\n", chksum->hdr_chksum);
printf("+++ Section Information +++\n");
printf("# of sections: %u\n", hdr->sect_info.num_sects);
section=&(hdr->sections);
for(i = 0; i < hdr->sect_info.num_sects; i++, section++) {
printf("+++++ Section %d +++++\n", i);
printf("Total size: %u bytes\n", section->total_size);
printf("Raw Size: %u bytes\n", section->raw_size);
printf("Offset: 0x%x\n", section->offset);
printf("Type: 0x%x\n", section->type);
printf("Name: %s\n", section->name);
}
printf("*******************************************************\n");
}
CMDLINE_CFG cmd_line_cfg =
{
{
/* MIN MAX FLAGS OPTION */
{ 2, 2, (CMDLINE_OPTFLAG_ALLOW | CMDLINE_OPTFLAG_MANDAT) }, /* '-a' align1 align2 */
{ 0, 0, CMDLINE_OPTFLAG_ALLOW }, /* '-b' bootstrap */
{ 0, 0, !CMDLINE_OPTFLAG_ALLOW }, /* '-c' */
{ 0, 0, !CMDLINE_OPTFLAG_ALLOW }, /* '-d' */
{ 0, 0, !CMDLINE_OPTFLAG_ALLOW }, /* '-e' */
{ 1, 1, CMDLINE_OPTFLAG_ALLOW }, /* '-f' flags */
{ 0, 0, !CMDLINE_OPTFLAG_ALLOW }, /* '-g' */
{ 1, 1, CMDLINE_OPTFLAG_ALLOW }, /* '-h' */
{ 2, 2, (CMDLINE_OPTFLAG_ALLOW | CMDLINE_OPTFLAG_MANDAT) }, /* '-i arg1 arg2 ' */
{ 0, 0, !CMDLINE_OPTFLAG_ALLOW }, /* '-j' */
{ 0, 0, !CMDLINE_OPTFLAG_ALLOW }, /* '-k' */
{ 0, 0, !CMDLINE_OPTFLAG_ALLOW }, /* '-l' */
{ 0, 0, !CMDLINE_OPTFLAG_ALLOW }, /* '-m' */
{ 0, 0, !CMDLINE_OPTFLAG_ALLOW }, /* '-n' */
{ 1, 1, (CMDLINE_OPTFLAG_ALLOW | CMDLINE_OPTFLAG_MANDAT) }, /* '-o arg' */
{ 1, 1, CMDLINE_OPTFLAG_ALLOW }, /* '-p' PROD_ID */
{ 0, 0, !CMDLINE_OPTFLAG_ALLOW }, /* '-q' */
{ 1, 1, CMDLINE_OPTFLAG_ALLOW }, /* '-r' REL_ID */
{ 1, 1, CMDLINE_OPTFLAG_ALLOW }, /* '-s' "Release XXX.XXX" */
{ 0, 0, !CMDLINE_OPTFLAG_ALLOW }, /* '-t' */
{ 0, 0, !CMDLINE_OPTFLAG_ALLOW }, /* '-u' */
{ 0, 0, CMDLINE_OPTFLAG_ALLOW }, /* '-v' control VERBOSE/NON-VERBOSE mode */
{ 0, 0, !CMDLINE_OPTFLAG_ALLOW }, /* '-w' */
{ 0, 0, !CMDLINE_OPTFLAG_ALLOW }, /* '-x' */
{ 0, 0, !CMDLINE_OPTFLAG_ALLOW }, /* '-y' */
{ 0, 0, !CMDLINE_OPTFLAG_ALLOW } /* '-z' */
},
{ 0, 0, !CMDLINE_OPTFLAG_ALLOW }, /* global arguments */
};
/***************************************************************************
* int nsp_img_write(void* image, char* file, int padding)
* Write out the image.
***************************************************************************/
int main(int argc, char* argv[], char* env[])
{
FILE* nsp_image = NULL;
int header_version=1;
int cmdline_err;
char* cmdline_error_msg;
char* filen_kernel;
char* filen_files;
char* filen_out;
int i,count; /* loop variables */
int num_sects = 2; /* We require exactly two image with -i option
(see CMDLINE_CFG structure above) */
int desc_count=0;
int total = 0;
int header_size=0;
struct nsp_img_hdr_head *img_hdr_head; /* Start of image header */
struct nsp_img_hdr_info *img_hdr_info;
struct nsp_img_hdr_section_info *img_hdr_section_info ;
struct nsp_img_hdr_sections *img_hdr_sections, *section; /* Section pointers */
/* Configure the command line. */
cmdline_configure(&cmd_line_cfg);
/* Read and parse the command line. */
cmdline_err = cmdline_read(argc, argv);
/* Check for parsing errors. */
if(cmdline_err != 0) {
/* Get the parse error message */
cmdline_error_msg = cmdline_error(cmdline_err);
/* Print it out */
printf("%s\n", cmdline_error_msg);
/* Print our help too */
print_help();
return -1;
}
if(cmdline_getopt_count('h') > 0)
{
header_version=atoi(argv[cmdline_getarg(cmdline_getarg_list('h'),0)]);
}
/* Set up arguments */
filen_kernel = argv[cmdline_getarg(cmdline_getarg_list('i'),0)];
filen_files = argv[cmdline_getarg(cmdline_getarg_list('i'),1)];
filen_out = argv[cmdline_getarg(cmdline_getarg_list('o'),0)];
/* Command line arguments have been parsed. Start doing our work. */
/* Caculate the header size, and allocate the memory, and assign the sub pointers */
header_size = sizeof(struct nsp_img_hdr_head) + /* This has a single section
desc block already */
(header_version==1?0:4) +
sizeof(struct nsp_img_hdr_info) +
sizeof(struct nsp_img_hdr_section_info) +
sizeof(struct nsp_img_hdr_sections) * num_sects ;
img_hdr_head = (struct nsp_img_hdr_head *)malloc(header_size);
memset(img_hdr_head, 0x0, header_size);
img_hdr_info = (struct nsp_img_hdr_info*)((char *)img_hdr_head + sizeof(struct nsp_img_hdr_head) + (header_version==1?0:4));
img_hdr_section_info = (struct nsp_img_hdr_section_info*)((char *)img_hdr_info + sizeof(struct nsp_img_hdr_info));
img_hdr_sections = (struct nsp_img_hdr_sections*)((char *)img_hdr_section_info + sizeof(struct nsp_img_hdr_section_info));
section = img_hdr_sections;
memset(img_hdr_head, 0xff, (void*)img_hdr_info - (void*)img_hdr_head);
img_hdr_head->hdr_version = header_version;
img_hdr_head->hdr_size = header_size;
img_hdr_head->info_offset = (void*)img_hdr_info - (void*)img_hdr_head;
img_hdr_head->sect_info_offset = (void*)img_hdr_section_info - (void*)img_hdr_head;
img_hdr_section_info->num_sects = num_sects;
img_hdr_section_info->sect_size = sizeof(struct nsp_img_hdr_sections);
img_hdr_section_info->sections_offset = (void*)img_hdr_sections - (void*)img_hdr_head;
/* chksum = (struct nsp_img_hdr_chksum *)
((unsigned int)image_hdr + header_size - sizeof(struct nsp_img_hdr_chksum));*/
/* Open the out file */
nsp_image = fopen(filen_out,"wb+");
if(nsp_image==NULL) {
printf("ERROR: can't open %s for writing.\n", filen_out);
return -1;
}
/* Skip image header. We'll come back to it after we've written out the images. */
fseek(nsp_image,header_size,SEEK_SET);
total = ftell(nsp_image);
total = header_size;
printf("total=%x\n",total);
{
int align;
int padding;
char * buf;
align = (header_version==1?0x10000:0x4000);
if(align==0) {
/* The user indicated no padding */
padding = 0;
} else {
/* Calculate number padding bytes */
if((total %align) ==0)
padding=0;
else
padding = align - (total % align);
}
if(padding>0)
{
buf=malloc(padding);
memset(buf, 0xff, padding);
if(fwrite((void*)buf,1,padding,nsp_image)!=padding) {
printf("ERROR: can't write to %s.\n", filen_out);
free(buf);
return -1;
}
free(buf);
}
total+=padding;
}
/* Write out all specified images (with -i option) */
for(i=0; i < num_sects; i++) {
char* file_name; /* input file name */
FILE* filep; /* input file pointer */
int padding; /* number of padding bytes to prepend */
int align; /* align factor from command line */
int result; /* intermediate result */
char * buf;
/* Open the specified image for reading */
file_name = argv[cmdline_getarg(cmdline_getarg_list('i'),i)];
filep = fopen(file_name, "rb");
if(filep==NULL) {
printf("ERROR: can't open file %s for reading.\n", file_name);
return -1;
}
section->flags = ~0x00;
/* Determine file size */
fseek(filep,0,SEEK_END);
section->raw_size=ftell(filep);
fseek(filep,0,SEEK_SET);
cs_calc_sum(filep,(unsigned long *)§ion->chksum,0);
fseek(filep,0,SEEK_SET);
/* Retrieve the alignment constant */
/* Set image offset from the beginning of the out file */
section->offset=total;// + padding;
//total += padding;
/* Copy the image file into nsp_image */
count = section->raw_size;
buf=malloc(count);
result=fread(buf, 1, count, filep);
fwrite(buf, 1, result, nsp_image);
free(buf);
/* HACK: This is a hack to get the names and types to the files.
TODO: Fix this to be a real method */
if(i==0){
section->type=NSP_IMG_SECTION_TYPE_KERNEL;
strncpy(section->name, "kernel", 16);
} else if(i==1){
section->type=NSP_IMG_SECTION_TYPE_FILESYSTEM_ROOT;
strncpy(section->name, "root", 16);
}
/* Account for the total */
align = strtoul(argv[cmdline_getarg(cmdline_getarg_list('a'),i)],NULL,0);
if(i==0){
if(align==0 || (((section->raw_size+ section->offset)%align)==0))
padding=0;
else
padding = align - ((section->raw_size+ section->offset) % align);
section->total_size=section->raw_size + padding;
}
else{
#define EXTRA_BLOCK 0x10000
unsigned int squash_padding;
squash_padding = EXTRA_BLOCK - section->raw_size % EXTRA_BLOCK;
buf=malloc(EXTRA_BLOCK + 4);
memset(buf, 0, squash_padding);
fwrite(buf, 1, squash_padding, nsp_image);
memset(buf, 0, EXTRA_BLOCK + 4);
*((unsigned int *)buf)=0xdec0adde;
*((unsigned int *)(buf+EXTRA_BLOCK))=0xdec0adde;
fwrite(buf, 1, EXTRA_BLOCK+4, nsp_image);
free(buf);
if(align==0 || (((section->raw_size + (EXTRA_BLOCK + 4 + squash_padding)) %align)==0))
padding=0;
else
padding = align - ((section->raw_size + (EXTRA_BLOCK + 4 + squash_padding)) % align);
section->total_size=section->raw_size + (EXTRA_BLOCK + 4 + squash_padding) + padding;
}
if(padding>0){
buf=malloc(padding);
memset(buf, 0xff, padding);
fwrite(buf, 1, padding, nsp_image);
free(buf);
}
printf("*****padding is %d\ttotal_size=%d\traw_size=%d\n",padding, section->total_size, section->raw_size);
//total += section->raw_size;
total = section->total_size + section->offset;
printf("total=0x%x\n",total);
/* Close the input file */
fclose(filep);
/* Move the section pointer to the next slot */
section++;
}
/* Take care of the NSP image header fields */
/* head fields */
img_hdr_head->magic = NSP_IMG_MAGIC_NUMBER;
img_hdr_head->boot_offset = img_hdr_sections->offset;
img_hdr_head->flags = ~0x00; /* Set to all 1's */
if(cmdline_getopt_count('b'))
img_hdr_head->flags &= ~(NSP_IMG_FLAG_FAILBACK_5 | NSP_IMG_FLAG_FAILBACK_1);
if(cmdline_getopt_count('f'))
img_hdr_head->flags = strtoul(argv[cmdline_getarg(cmdline_getarg_list('f'),0)], 0, 16);
#if 0
img_hdr_head->hdr_version = 2;
img_hdr_head->hdr_size = header_size;
#endif
if(cmdline_getopt_count('p'))
img_hdr_head->prod_id = strtoul(argv[cmdline_getarg(cmdline_getarg_list('p'),0)], 0, 16);
else
img_hdr_head->prod_id = 0x4C575943;
if(cmdline_getopt_count('r'))
img_hdr_head->rel_id = strtoul(argv[cmdline_getarg(cmdline_getarg_list('r'),0)], 0, 0);
else
img_hdr_head->rel_id = 0x10203040;
if(cmdline_getopt_count('s'))
img_hdr_head->version = strtoul(argv[cmdline_getarg(cmdline_getarg_list('s'),0)], 0, 0);
else
img_hdr_head->version = 0x0b040000;
img_hdr_head->image_size = total;
#if 0
img_hdr_head->info_offset = (unsigned int)(&(image_hdr->info)) -
(unsigned int)image_hdr;
img_hdr_head->sect_info_offset= (unsigned int)(&(image_hdr->sect_info)) -
(unsigned int)image_hdr;
#endif
// image_hdr->head.chksum_offset = (unsigned int)chksum - (unsigned int)image_hdr;
img_hdr_head->chksum_offset = 0xffffffff;
// image_hdr->head.pad1 = 0xffffffff;
/* info fields */
/* TODO: Fix. Do nothing yet */
// strncpy(nsp_img_hdr.id.prod_info,NSP_PRODINFO_STRING,sizeof(NSP_PRODINFO_STRING));
strcpy(img_hdr_info->image_filename, (const char *)basename(filen_out));
/* section fields */
#if 0
img_hdr_section_info->num_sects= num_sects;
img_hdr_section_info->sect_size= sizeof(struct nsp_img_hdr_sections);
img_hdr_section_info->sections_offset= (unsigned int)(&(image_hdr->sections)) -
(unsigned int)image_hdr;
#endif
/* Calculate checksum(s) */
#if 0
chksum->hdr_chksum = cs_calc_buf_sum((char*)image_hdr,
header_size - sizeof(struct nsp_img_hdr_chksum));
#endif
/* Write out the NSP header. */
fseek(nsp_image,0,SEEK_SET);
count = fwrite((void*)img_hdr_head, header_size, 1, nsp_image);
if(count!=1) {
printf("ERROR: can't write to %s.\n", filen_out);
return -1;
}
/* Check if -v option was specified (no arg needed) */
if(cmdline_getopt_count('v') > 0)
{
struct nsp_img_hdr_head head;
struct nsp_img_hdr *hdr;
/* Rewind the file back to the beginning */
fseek(nsp_image,0,SEEK_SET);
/* Read header from the file */
fread((void*)&head, sizeof(struct nsp_img_hdr_head),
1, nsp_image);
/* Get memory to store the complete header */
hdr = (struct nsp_img_hdr *)malloc(head.hdr_size);
/* Read header from the file */
fseek(nsp_image,0,SEEK_SET);
fread((void*)hdr, head.hdr_size, 1, nsp_image);
/* Print it out */
mknspimg_print_hdr(hdr);
printf("Generated total %d bytes\n",total);
free(hdr);
}
free(img_hdr_head);
{
struct checksumrecord cr;
cr.magic=CKSUM_MAGIC_NUMBER;
cs_calc_sum(nsp_image, (unsigned long *)&cr.chksum, 0);
fseek(nsp_image,0, SEEK_END);
fwrite(&cr, 1, sizeof(cr), nsp_image);
}
{
FILE * non_web;
char fname[256];
char * img_buf;
unsigned int len;
strcpy(fname, filen_out);
strcat(fname, ".non_web");
non_web = fopen(fname,"wb+");
fseek(nsp_image, 0, SEEK_END);
len = ftell(nsp_image);
img_buf=malloc(len);
fseek(nsp_image, 0, SEEK_SET);
fread(img_buf, 1, len, nsp_image);
img_buf[0xb] = 0x17;
fwrite(img_buf, 1, len-sizeof(struct checksumrecord), non_web);
fclose(non_web);
free(img_buf);
}
/* Close NSP image file */
fclose(nsp_image);
/* return result */
return(0);
}
#ifdef DMALLOC
#include <dmalloc.h>
#endif /* DMALLOC */
#define BUFLEN (1 << 16)
static unsigned long crctab[256] =
{
0x0,
0x04C11DB7, 0x09823B6E, 0x0D4326D9, 0x130476DC, 0x17C56B6B,
0x1A864DB2, 0x1E475005, 0x2608EDB8, 0x22C9F00F, 0x2F8AD6D6,
0x2B4BCB61, 0x350C9B64, 0x31CD86D3, 0x3C8EA00A, 0x384FBDBD,
0x4C11DB70, 0x48D0C6C7, 0x4593E01E, 0x4152FDA9, 0x5F15ADAC,
0x5BD4B01B, 0x569796C2, 0x52568B75, 0x6A1936C8, 0x6ED82B7F,
0x639B0DA6, 0x675A1011, 0x791D4014, 0x7DDC5DA3, 0x709F7B7A,
0x745E66CD, 0x9823B6E0, 0x9CE2AB57, 0x91A18D8E, 0x95609039,
0x8B27C03C, 0x8FE6DD8B, 0x82A5FB52, 0x8664E6E5, 0xBE2B5B58,
0xBAEA46EF, 0xB7A96036, 0xB3687D81, 0xAD2F2D84, 0xA9EE3033,
0xA4AD16EA, 0xA06C0B5D, 0xD4326D90, 0xD0F37027, 0xDDB056FE,
0xD9714B49, 0xC7361B4C, 0xC3F706FB, 0xCEB42022, 0xCA753D95,
0xF23A8028, 0xF6FB9D9F, 0xFBB8BB46, 0xFF79A6F1, 0xE13EF6F4,
0xE5FFEB43, 0xE8BCCD9A, 0xEC7DD02D, 0x34867077, 0x30476DC0,
0x3D044B19, 0x39C556AE, 0x278206AB, 0x23431B1C, 0x2E003DC5,
0x2AC12072, 0x128E9DCF, 0x164F8078, 0x1B0CA6A1, 0x1FCDBB16,
0x018AEB13, 0x054BF6A4, 0x0808D07D, 0x0CC9CDCA, 0x7897AB07,
0x7C56B6B0, 0x71159069, 0x75D48DDE, 0x6B93DDDB, 0x6F52C06C,
0x6211E6B5, 0x66D0FB02, 0x5E9F46BF, 0x5A5E5B08, 0x571D7DD1,
0x53DC6066, 0x4D9B3063, 0x495A2DD4, 0x44190B0D, 0x40D816BA,
0xACA5C697, 0xA864DB20, 0xA527FDF9, 0xA1E6E04E, 0xBFA1B04B,
0xBB60ADFC, 0xB6238B25, 0xB2E29692, 0x8AAD2B2F, 0x8E6C3698,
0x832F1041, 0x87EE0DF6, 0x99A95DF3, 0x9D684044, 0x902B669D,
0x94EA7B2A, 0xE0B41DE7, 0xE4750050, 0xE9362689, 0xEDF73B3E,
0xF3B06B3B, 0xF771768C, 0xFA325055, 0xFEF34DE2, 0xC6BCF05F,
0xC27DEDE8, 0xCF3ECB31, 0xCBFFD686, 0xD5B88683, 0xD1799B34,
0xDC3ABDED, 0xD8FBA05A, 0x690CE0EE, 0x6DCDFD59, 0x608EDB80,
0x644FC637, 0x7A089632, 0x7EC98B85, 0x738AAD5C, 0x774BB0EB,
0x4F040D56, 0x4BC510E1, 0x46863638, 0x42472B8F, 0x5C007B8A,
0x58C1663D, 0x558240E4, 0x51435D53, 0x251D3B9E, 0x21DC2629,
0x2C9F00F0, 0x285E1D47, 0x36194D42, 0x32D850F5, 0x3F9B762C,
0x3B5A6B9B, 0x0315D626, 0x07D4CB91, 0x0A97ED48, 0x0E56F0FF,
0x1011A0FA, 0x14D0BD4D, 0x19939B94, 0x1D528623, 0xF12F560E,
0xF5EE4BB9, 0xF8AD6D60, 0xFC6C70D7, 0xE22B20D2, 0xE6EA3D65,
0xEBA91BBC, 0xEF68060B, 0xD727BBB6, 0xD3E6A601, 0xDEA580D8,
0xDA649D6F, 0xC423CD6A, 0xC0E2D0DD, 0xCDA1F604, 0xC960EBB3,
0xBD3E8D7E, 0xB9FF90C9, 0xB4BCB610, 0xB07DABA7, 0xAE3AFBA2,
0xAAFBE615, 0xA7B8C0CC, 0xA379DD7B, 0x9B3660C6, 0x9FF77D71,
0x92B45BA8, 0x9675461F, 0x8832161A, 0x8CF30BAD, 0x81B02D74,
0x857130C3, 0x5D8A9099, 0x594B8D2E, 0x5408ABF7, 0x50C9B640,
0x4E8EE645, 0x4A4FFBF2, 0x470CDD2B, 0x43CDC09C, 0x7B827D21,
0x7F436096, 0x7200464F, 0x76C15BF8, 0x68860BFD, 0x6C47164A,
0x61043093, 0x65C52D24, 0x119B4BE9, 0x155A565E, 0x18197087,
0x1CD86D30, 0x029F3D35, 0x065E2082, 0x0B1D065B, 0x0FDC1BEC,
0x3793A651, 0x3352BBE6, 0x3E119D3F, 0x3AD08088, 0x2497D08D,
0x2056CD3A, 0x2D15EBE3, 0x29D4F654, 0xC5A92679, 0xC1683BCE,
0xCC2B1D17, 0xC8EA00A0, 0xD6AD50A5, 0xD26C4D12, 0xDF2F6BCB,
0xDBEE767C, 0xE3A1CBC1, 0xE760D676, 0xEA23F0AF, 0xEEE2ED18,
0xF0A5BD1D, 0xF464A0AA, 0xF9278673, 0xFDE69BC4, 0x89B8FD09,
0x8D79E0BE, 0x803AC667, 0x84FBDBD0, 0x9ABC8BD5, 0x9E7D9662,
0x933EB0BB, 0x97FFAD0C, 0xAFB010B1, 0xAB710D06, 0xA6322BDF,
0xA2F33668, 0xBCB4666D, 0xB8757BDA, 0xB5365D03, 0xB1F740B4
};
int cs_is_tagged(FILE *fp)
{
char buf[8];
fseek(fp, -8, SEEK_END);
fread(buf, 8, 1, fp);
if(*(unsigned long*)buf == CKSUM_MAGIC_NUMBER)
return 1;
return 0;
}
unsigned long cs_read_sum(FILE *fp)
{
char buf[8];
fseek(fp, -8, SEEK_END);
fread(buf, 8, 1, fp);
return *((unsigned long*)&buf[4]);
}
int cs_calc_sum(FILE *fp, unsigned long *res, int tagged)
{
unsigned char buf[BUFLEN];
unsigned long crc = 0;
uintmax_t length = 0;
size_t bytes_read;
fseek(fp, 0, SEEK_SET);
while((bytes_read = fread(buf, 1, BUFLEN, fp)) > 0)
{
unsigned char *cp = buf;
if(length + bytes_read < length)
return 0;
if(bytes_read != BUFLEN && tagged)
bytes_read -= 8;
length += bytes_read;
while(bytes_read--)
crc =(crc << 8) ^ crctab[((crc >> 24) ^ *cp++) & 0xFF];
}
if(ferror(fp))
return 0;
for(; length; length >>= 8)
crc =(crc << 8) ^ crctab[((crc >> 24) ^ length) & 0xFF];
crc = ~crc & 0xFFFFFFFF;
*res = crc;
return 1;
}
unsigned long cs_calc_buf_sum(char *buf, int size)
{
unsigned long crc = 0;
char *cp = buf;
unsigned long length = size;
while(size--)
crc =(crc << 8) ^ crctab[((crc >> 24) ^ *cp++) & 0xFF];
for(; length; length >>= 8)
crc =(crc << 8) ^ crctab[((crc >> 24) ^ length) & 0xFF];
crc = ~crc & 0xFFFFFFFF;
return crc;
}
unsigned long cs_calc_buf_sum_ds(char *buf, int buf_size, char *sign, int sign_len)
{
unsigned long crc = 0;
char *cp = buf;
unsigned long length = buf_size+sign_len;
while(buf_size--)
crc =(crc << 8) ^ crctab[((crc >> 24) ^ *cp++) & 0xFF];
cp = sign;
while(sign_len--)
crc =(crc << 8) ^ crctab[((crc >> 24) ^ *cp++) & 0xFF];
for(; length; length >>= 8)
crc =(crc << 8) ^ crctab[((crc >> 24) ^ length) & 0xFF];
crc = ~crc & 0xFFFFFFFF;
return crc;
}
int cs_set_sum(FILE *fp, unsigned long sum, int tagged)
{
unsigned long magic = CKSUM_MAGIC_NUMBER;
if(tagged)
fseek(fp, -8, SEEK_END);
else
fseek(fp, 0, SEEK_END);
if(fwrite(&magic, 1, 4, fp) < 4)
return 0;
if(fwrite(&sum, 1, 4, fp) < 4)
return 0;
return 1;
}
void cs_get_sum(FILE *fp, unsigned long *sum)
{
unsigned long magic = 0;
fseek(fp, -8, SEEK_END);
fread(&magic, 4, 1, fp);
fread(sum, 4, 1, fp);
}
int cs_validate_file(char *filename)
{
FILE *pFile = NULL;
unsigned long sum = 0, res = 0;
if((pFile = fopen(filename, "r")) == NULL)
return 0;
if(!cs_is_tagged(pFile))
{
fclose(pFile);
return 0;
}
if(!cs_calc_sum(pFile, &sum, 1))
{
fclose(pFile);
return 0;
}
cs_get_sum(pFile, &res);
fclose(pFile);
if(sum != res)
return 0;
return 1;
}
/* ********* Library internal data ********* */
#define CMDLINE_TRUE 1
#define CMDLINE_FALSE 0
typedef enum CMDLINE_ERR
{
CMDLINE_ERR_OK = 0, /* No Error (OK) */
CMDLINE_ERR_ERROR = -1, /* Unspecified error */
CMDLINE_ERR_INVKEY = -3, /* Invalid option key */
CMDLINE_ERR_MANYARG = -4, /* Too many arguments */
CMDLINE_ERR_FEWARG = -5, /* Too few arguments */
CMDLINE_ERR_ILLOPT = -6, /* Option not allowed (illegal option) */
CMDLINE_ERR_NOMEM = -7, /* No memory */
CMDLINE_ERR_OPTMIS = -8 /* A mandatory option is missing */
} CMDLINE_ERR;
/* Argument list */
typedef struct CMDLINE_ARG
{
int index; /* Index of the argument in the command line */
struct CMDLINE_ARG* p_next; /* Next node in the linked list */
} CMDLINE_ARG;
/* Master control block for an option */
typedef struct CMDLINE_ARGS
{
int argc; /* Total count of arguments found */
int optc; /* Total count of options found */
CMDLINE_ARG* list; /* Argument list */
} CMDLINE_ARGS;
/* Master control block for all found arguments */
typedef struct CMDLINE_DATA
{
CMDLINE_ARGS opt_args[26]; /* Array of MCBs for each option ('a' through 'z') */
CMDLINE_ARGS glb_args; /* Global arguments */
int parsed; /* Internal flag to prevent client calls if library is not initialized */
} CMDLINE_DATA;
/* ********* Local Data ********* */
static CMDLINE_CFG cmdline_cfg;
static CMDLINE_DATA cmdline_data;
char* cmdline_errmsg = "CMDLINE ERROR";
/* ***************************************************************
* Print all found command line options and their arguments
****************************************************************** */
void* cmdline_getarg_list(char opt)
{
int index = (opt - 'a');
/* Check the validity of the index */
if((index < 0) || (index > 25))
{
/* ERROR: Wrong option */
return NULL;
}
/* Return a pointer to the ARGS control structure */
return((void*)(&cmdline_data.opt_args[index]));
}
/* ***************************************************************
* Print all found command line options and their arguments
****************************************************************** */
int cmdline_getarg_count(void* list)
{
CMDLINE_ARGS* p_args = (CMDLINE_ARGS*)list;
/* Return number of arguments for this option */
return(p_args->argc);
}
/* ***************************************************************
* Print all found command line options and their arguments
****************************************************************** */
int cmdline_getopt_count(char opt)
{
int index;
/* Calculate index value */
index = opt - 'a';
if(index < 0 || index > 25) return -1;
/* Return number of arguments for this option */
return(cmdline_data.opt_args[index].optc);
}
/* ***************************************************************
* Print all found command line options and their arguments
****************************************************************** */
int cmdline_getarg(void* list, int num)
{
int i;
CMDLINE_ARGS* p_args = (CMDLINE_ARGS*)list;
CMDLINE_ARG* p_arg;
/* Search the 'num' argument in the list for this option */
for(i=0,p_arg=p_args->list; (p_arg!=NULL) && (i<p_args->argc); i++, p_arg=p_arg->p_next)
{
/* if num matches i, we found it */
if(i==num) return(p_arg->index);
}
/* We did not find the specified argument or the list was empty */
return -1;
}
/* ***************************************************************
* Print all found command line options and their arguments
****************************************************************** */
int cmdline_configure(CMDLINE_CFG* p_cfg)
{
/* reset global data */
memset(&cmdline_cfg,0,sizeof(cmdline_cfg));
memset(&cmdline_data,0,sizeof(cmdline_data));
/* Copy the user's config structure */
cmdline_cfg = *p_cfg;
return 0;
}
/* ***************************************************************
* Print all found command line options and their arguments
****************************************************************** */
char* cmdline_error(int err)
{
/* TODO: implement a table of error messages */
return(cmdline_errmsg);
}
/* ***************************************************************
* Print all found command line options and their arguments
****************************************************************** */
static void cmdline_print_args(CMDLINE_ARGS* p_arglist, char* argv[])
{
CMDLINE_ARG* p_arg;
printf(" Number of times option was specified: %d\n", p_arglist->optc);
printf(" Number of Arguments: %d\n", p_arglist->argc);
if(p_arglist->argc > 0)
{
printf(" Argument List: ");
for(p_arg=p_arglist->list; p_arg != NULL; p_arg=p_arg->p_next)
printf("%s ", argv[p_arg->index]);
}
printf("\n");
}
/* ***************************************************************
* Print all found command line options and their arguments
****************************************************************** */
void cmdline_print(char* argv[])
{
int i;
/* Check if the command line was parsed */
if(cmdline_data.parsed != CMDLINE_TRUE)
{
printf("The command line has not been parsed yet.\n");
return;
}
/* Print out option arguments */
for( i = 0; i < 26; i++ )
{
/* Check if the option was specified */
if(cmdline_data.opt_args[i].optc !=0 )
{
/* Print out option name and arguments */
printf("Option: -%c\n", (char)('a'+i));
cmdline_print_args(&(cmdline_data.opt_args[i]), argv);
}
}
/* Print out global arguments */
printf("Global arguments:\n");
cmdline_print_args(&(cmdline_data.glb_args), argv);
}
/* ***************************************************************
* Print configuration
****************************************************************** */
void cmdline_print_cfg(void)
{
}
static void cmdline_argadd(CMDLINE_ARGS* p_arglist, CMDLINE_ARG* p_arg)
{
CMDLINE_ARG* p_list;
CMDLINE_ARG* p_prev=NULL;
/* See if we had anything in the list */
if(p_arglist->argc == 0)
{
/* Link the argument in */
p_arglist->list = p_arg;
}
else
{
/* Find the tail of the list */
for(p_list=p_arglist->list; p_list != NULL; p_list=p_list->p_next)
p_prev = p_list;
/* Link the argument in */
p_prev->p_next=p_arg;
}
/* Keep track of arg number */
p_arglist->argc++;
}
/* ***************************************************************
* cmdline_read()
* Read and parse command line arguments
****************************************************************** */
int cmdline_read(int argc, char* argv[])
{
int i, option=0;
/* Process every command line argument in argv[] array */
for( i = 1; i < argc; i++ )
{
/* Does the argument start with a dash? */
if( *argv[i] == '-' )
{
/* The argument must be two characters: a dash, and a letter */
if( strlen(argv[i]) != 2 )
{
/* ERROR: option syntax (needs to be a dash and one letter) */
return(CMDLINE_ERR_ERROR);
}
/* Check validity of the option key ('a' through 'z') */
if( ((*(argv[i] + 1)) < 'a') || ((*(argv[i] + 1)) > 'z') )
{
/* ERROR: option sysntax (invalid option key) */
return(CMDLINE_ERR_INVKEY);
}
/* Calculate the option index */
option = (*(argv[i] + 1)) - 'a';
if((option < 0) || (option > 25)) return(CMDLINE_ERR_INVKEY);
/* Check to see if the option is allowed */
if( cmdline_cfg.opts[option].flags & CMDLINE_OPTFLAG_ALLOW )
{
/* Option allowed. */
cmdline_data.opt_args[option].optc++;
continue;
}
else
{
/* ERROR: Option is not allowed */
return(CMDLINE_ERR_ILLOPT);
}
}
else
{
/* Read the arguments for the option */
CMDLINE_ARG* p_arg;
/* Allocate space for the argument node */
p_arg = (CMDLINE_ARG*)calloc(1,sizeof(CMDLINE_ARG));
if( p_arg== NULL )
{
/* ERROR: Can't allocate memory for the argument index */
return(CMDLINE_ERR_NOMEM);
}
/* Initialize the argument */
p_arg->index = i;
p_arg->p_next = NULL;
/* Check if we can add to the list of arguments for this option */
if( (option < 0) /* Do we have to add to the global list? */
|| (cmdline_data.opt_args[option].argc == cmdline_cfg.opts[option].max) /* Did we reach MAX arguments? */
)
{
/* This option does not require arguments. Keep the argument in the global list. */
cmdline_argadd(&(cmdline_data.glb_args), p_arg);
continue;
}
else
{
/* See if the current count has reached max for this option */
if( cmdline_data.opt_args[option].argc == cmdline_cfg.opts[option].max )
{
/* ERROR: too many arguments for an option */
return(CMDLINE_ERR_MANYARG);
}
else
{
/* Link the argument to the arg list of the option */
cmdline_argadd(&(cmdline_data.opt_args[option]), p_arg);
continue;
}
}
}
}
/* ****** We read the complete command line. See if what we collected matches the configuration ******* */
/* Check every collected option against its configuration */
for( i=0; i < 26; i++ )
{
/* Check if this option was allowed */
if(cmdline_cfg.opts[i].flags & CMDLINE_OPTFLAG_ALLOW)
{
/* See if it was mandatory */
if(cmdline_cfg.opts[i].flags & CMDLINE_OPTFLAG_MANDAT)
{
/* Check if we really collected this option on the command line. */
if(cmdline_data.opt_args[i].optc == 0)
{
/* ERROR: a missing mandatory option */
return(CMDLINE_ERR_OPTMIS);
}
else
{
/* Option was there. Check how many args we got for it. */
if(cmdline_data.opt_args[i].argc < cmdline_cfg.opts[i].min)
{
/* ERROR: too few arguments for an option */
return(CMDLINE_ERR_FEWARG);
}
else
{
/* This mandatory option was proper. */
continue;
}
}
}
else /* This is non-mandatory option: */
{
/* Check if the option was specified on the command line */
if(cmdline_data.opt_args[i].optc == 0)
{
/* option wasn't specified, go to the next */
continue;
}
else
{
/* Option was there. Check how many args we collected for it. */
if(cmdline_data.opt_args[i].argc < cmdline_cfg.opts[i].min)
{
/* ERROR: too few arguments for a non-mandatory option */
return(CMDLINE_ERR_FEWARG);
}
else
{
/* This non-mandatory option was proper. */
continue;
}
}
}
}
else /* Option was not allowed. */
{
/* We should not get here as the non-allowed options should have been
trapped eariler. */
}
}
/* Command line was proper as far as the number of options and their arguments */
cmdline_data.parsed = CMDLINE_TRUE;
return(CMDLINE_ERR_OK);
}