#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); }