--- /dev/null
+/* vi: set sw=4 ts=4: */
+/*
+ * Copyright (C) 2008, Alpha Networks, Inc.
+ * Created by David Hsieh <david_hsieh@alphanetworks.com>
+ * All right reserved.
+ *
+ * (SEA)ttle i(MA)ge is the image which used in project seattle.
+ *
+ * Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the following
+ * conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer.
+ *
+ * 2. 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.
+ *
+ * 3. The name of the author may not be used to endorse or promote
+ * products derived from this software without specific prior
+ * written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR
+ * 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.
+ *
+ */
+
+#include <stdio.h>
+#include <stdint.h>
+#include <stdlib.h>
+#include <stdarg.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <unistd.h>
+#include <string.h>
+#include <arpa/inet.h>
+
+#include "md5.h"
+#include "seama.h"
+
+#define PROGNAME "seama"
+#define VERSION "0.20"
+#define MAX_SEAMA_META_SIZE 1024
+#define MAX_META 128
+#define MAX_IMAGE 128
+
+extern int optind;
+extern char * optarg;
+
+static int o_verbose = 0; /* verbose mode. */
+static char * o_dump = NULL; /* Seama file to dump. */
+static char * o_seal = NULL; /* Seal the input images when file name exist. */
+static char * o_extract = NULL; /* Extract the seama file. */
+static char * o_images[MAX_IMAGE];/* The image files to pack or seal */
+static int o_isize = 0; /* number of images */
+static char * o_meta[MAX_META]; /* meta data array */
+static int o_msize = 0; /* size of meta array */
+
+static void verbose(const char * format, ...)
+{
+ va_list marker;
+ if (o_verbose)
+ {
+ va_start(marker, format);
+ vfprintf(stdout, format, marker);
+ va_end(marker);
+ }
+}
+
+static void cleanup_exit(int exit_code)
+{
+ verbose("%s: exit with code %d\n", PROGNAME, exit_code);
+ exit(exit_code);
+}
+
+static void show_usage(int exit_code)
+{
+ printf( PROGNAME " version " VERSION "\n"
+ "usage: " PROGNAME " [OPTIONS]\n"
+ " -h show this help message.\n"
+ " -v verbose mode.\n"
+ " -m {META data} META data.\n"
+ " -d {file} dump the info of the seama file.\n"
+ " -i {input file} image file name.\n"
+ " -s {file} Seal the images to the seama file.\n"
+ " -x {seama file} Extract the seama file.\n"
+ "\n"
+ " SEAMA can pack the input file (with -i) into a seama file.\n"
+ " ex: seama -i target.file\n"
+ " SEAMA can also seal multiple seama files into a single seama file.\n"
+ " ex: seama -s final.file -i taget1.seama -i target2.seama\n"
+ " To extract the raw image from SEAMA, you need to specify the meta.\n"
+ " The first image match the specified meta will be extract to\n"
+ " the output file which was specified with '-x'.\n"
+ " ex: seama -x output -i seama.image -m file=sealpac\n"
+ );
+ cleanup_exit(exit_code);
+}
+
+static int parse_args(int argc, char * argv[])
+{
+ int opt;
+
+ while ((opt = getopt(argc, argv, "hvd:s:i:m:x:")) > 0)
+ {
+ switch (opt)
+ {
+ default: show_usage(-1); break;
+ case 'h': show_usage(0); break;
+ case 'v': o_verbose++; break;
+ case 'd': o_dump = optarg; break;
+ case 's': o_seal = optarg; break;
+ case 'x': o_extract = optarg; break;
+ case 'i':
+ if (o_isize < MAX_IMAGE) o_images[o_isize++] = optarg;
+ else printf("Exceed the maximum acceptable image files.!\n");
+ break;
+ case 'm':
+ if (o_msize < MAX_META) o_meta[o_msize++] = optarg;
+ else printf("Exceed the maximum acceptable META data.!\n");
+ break;
+ }
+ }
+ return 0;
+}
+
+/*******************************************************************/
+
+static size_t calculate_digest(FILE * fh, size_t size, uint8_t * digest)
+{
+ MD5_CTX ctx;
+ size_t bytes_left, bytes_read, i;
+ uint8_t buf[MAX_SEAMA_META_SIZE];
+
+ bytes_left = size ? size : sizeof(buf);
+ bytes_read = 0;
+
+ MD5_Init(&ctx);
+ while (!feof(fh) && !ferror(fh) && bytes_left > 0)
+ {
+ i = bytes_left < sizeof(buf) ? bytes_left : sizeof(buf);
+ i = fread(buf, sizeof(char), i, fh);
+ if (i > 0)
+ {
+ MD5_Update(&ctx, buf, i);
+ bytes_read += i;
+ }
+ if (size) bytes_left -= i;
+ }
+ MD5_Final(digest, &ctx);
+ return bytes_read;
+}
+
+#define READ_BUFF_SIZE 8*1024
+static size_t copy_file(FILE * to, FILE * from)
+{
+ size_t i, fsize = 0;
+ uint8_t buf[READ_BUFF_SIZE];
+
+ while (!feof(from) && !ferror(from))
+ {
+ i = fread(buf, sizeof(uint8_t), READ_BUFF_SIZE, from);
+ if (i > 0)
+ {
+ fsize += i;
+ fwrite(buf, sizeof(uint8_t), i, to);
+ }
+ }
+ return fsize;
+}
+
+static int verify_seama(const char * fname, int msg)
+{
+ FILE * fh = NULL;
+ struct stat st;
+ seamahdr_t shdr;
+ uint8_t checksum[16];
+ uint8_t digest[16];
+ uint8_t buf[MAX_SEAMA_META_SIZE];
+ size_t msize, isize, i;
+ int ret = -1;
+
+#define ERRBREAK(fmt, args...) { if (msg) printf(fmt, ##args); break; }
+
+ do
+ {
+ if (stat(fname, &st) < 0) ERRBREAK("Unable to get the info of '%s'\n",fname);
+ if ((fh = fopen(fname, "r+"))==NULL) ERRBREAK("Unable to open '%s' for reading!\n",fname);
+
+ /* Dump SEAMA header */
+ if (msg) printf("FILE - %s (%d bytes)\n", fname, (int)st.st_size);
+
+ /* SEAMA */
+ while (!feof(fh) && !ferror(fh))
+ {
+ /* read header */
+ if (fread(&shdr, sizeof(shdr), 1, fh) != 1) break;
+
+ /* Check the magic number */
+ if (shdr.magic != htonl(SEAMA_MAGIC)) ERRBREAK("Invalid SEAMA magic. Probably no more SEAMA!\n");
+
+ /* Get the size */
+ isize = ntohl(shdr.size);
+ msize = ntohs(shdr.metasize);
+
+ /* The checksum exist only if size is greater than zero. */
+ if (isize > 0)
+ {
+ if (fread(checksum, sizeof(checksum), 1, fh) != 1)
+ ERRBREAK("Error reading checksum !\n");
+ }
+
+ /* Check the META size. */
+ if (msize > sizeof(buf)) ERRBREAK("META data in SEAMA header is too large!\n");
+
+ /* Read META data. */
+ if (fread(buf, sizeof(char), msize, fh) != msize)
+ ERRBREAK("Unable to read SEAMA META data!\n");
+
+ /* dump header */
+ if (msg)
+ {
+ printf("SEAMA ==========================================\n");
+ printf(" magic : %08x\n", ntohl(shdr.magic));
+ printf(" meta size : %d bytes\n", msize);
+ for (i=0; i<msize; i+=(strlen((const char *)&buf[i])+1))
+ printf(" meta data : %s\n", &buf[i]);
+ printf(" image size : %d bytes\n", isize);
+ }
+
+ /* verify checksum */
+ if (isize > 0)
+ {
+ if (msg)
+ {
+ printf(" checksum : ");
+ for (i=0; i<16; i++) printf("%02X", checksum[i]);
+ printf("\n");
+ }
+
+ /* Calculate the checksum */
+ calculate_digest(fh, isize, digest);
+ if (msg)
+ {
+ printf(" digest : ");
+ for (i=0; i<16; i++) printf("%02X", digest[i]);
+ printf("\n");
+ }
+
+ if (memcmp(checksum, digest, 16)!=0) ERRBREAK("!!ERROR!! checksum error !!\n");
+ ret = 0;
+ }
+ }
+ if (msg) printf("================================================\n");
+ } while (0);
+ if (fh) fclose(fh);
+ return ret;
+}
+
+static size_t write_seama_header(FILE * fh, char * meta[], size_t msize, size_t size)
+{
+ seamahdr_t shdr;
+ size_t i;
+ uint16_t metasize = 0;
+
+ /* Calculate the META size */
+ for (i=0; i<msize; i++) metasize += (strlen(meta[i]) + 1);
+ //+++ let meta data end on 4 alignment by siyou. 2010/3/1 03:58pm
+ metasize = ((metasize+3)/4)*4;
+ verbose("SEAMA META : %d bytes\n", metasize);
+
+ /* Fill up the header, all the data endian should be network byte order. */
+ shdr.magic = htonl(SEAMA_MAGIC);
+ shdr.reserved = 0;
+ shdr.metasize = htons(metasize);
+ shdr.size = htonl(size);
+
+ /* Write the header */
+ return fwrite(&shdr, sizeof(seamahdr_t), 1, fh);
+}
+
+static size_t write_checksum(FILE * fh, uint8_t * checksum)
+{
+ return fwrite(checksum, sizeof(uint8_t), 16, fh);
+}
+
+static size_t write_meta_data(FILE * fh, char * meta[], size_t size)
+{
+ size_t i,j;
+ size_t ret = 0;
+
+ for (i=0; i<size; i++)
+ {
+ verbose("SEAMA META data : %s\n", meta[i]);
+ j = fwrite(meta[i], sizeof(char), strlen(meta[i])+1, fh);
+ if (j != strlen(meta[i])+1) return 0;
+ ret += j;
+ }
+ //+++ let meta data end on 4 alignment by siyou. 2010/3/1 03:58pm
+ j = ((ret+3)/4)*4;
+ for ( ; ret < j; ret++)
+ fwrite("", sizeof(char), 1, fh);
+
+ return ret;
+}
+
+/*******************************************************************/
+
+static void dump_seama(const char * fname)
+{
+ verify_seama(fname, 1);
+}
+
+static void seal_files(const char * file)
+{
+ FILE * fh;
+ FILE * ifh;
+ size_t i;
+
+ /* Each image should be seama. */
+ for (i = 0; i < o_isize; i++)
+ {
+ if (verify_seama(o_images[i], 0) < 0)
+ {
+ printf("'%s' is not a seama file !\n",o_images[i]);
+ return;
+ }
+ }
+
+ /* Open file for write */
+ fh = fopen(file, "w+");
+ if (fh)
+ {
+ /* Write the header. */
+ write_seama_header(fh, o_meta, o_msize, 0);
+ write_meta_data(fh, o_meta, o_msize);
+
+ /* Write image files */
+ for (i=0; i<o_isize; i++)
+ {
+ ifh = fopen(o_images[i], "r+");
+ if (ifh)
+ {
+ copy_file(fh, ifh);
+ fclose(ifh);
+ }
+ }
+
+ fclose(fh);
+ }
+}
+
+static void pack_files(void)
+{
+ FILE * fh;
+ FILE * ifh;
+ size_t i, fsize;
+ char filename[512];
+ uint8_t digest[16];
+
+ for (i=0; i<o_isize; i++)
+ {
+ /* Open the input file. */
+ ifh = fopen(o_images[i], "r+");
+ if (ifh)
+ {
+ fsize = calculate_digest(ifh, 0, digest);
+ verbose("file size (%s) : %d\n", o_images[i], fsize);
+ rewind(ifh);
+
+ /* Open the output file. */
+ sprintf(filename, "%s.seama", o_images[i]);
+ fh = fopen(filename, "w+");
+ if (fh)
+ {
+ write_seama_header(fh, o_meta, o_msize, fsize);
+ write_checksum(fh, digest);
+ write_meta_data(fh, o_meta, o_msize);
+ copy_file(fh, ifh);
+ fclose(fh);
+ }
+ fclose(ifh);
+ }
+ else
+ {
+ printf("Unable to open image file '%s'\n",o_images[i]);
+ }
+ }
+}
+
+/**************************************************************************/
+
+static int match_meta(const char * meta, size_t size)
+{
+ size_t i, j;
+ int match;
+
+ for (i = 0; i < o_msize; i++)
+ {
+ for (match = 0, j = 0; j < size; j += (strlen(&meta[j])+1))
+ if (strcmp(&meta[j], o_meta[i])==0) { match++; break; }
+ if (!match) return 0;
+ }
+ return 1;
+}
+
+
+static void extract_file(const char * output)
+{
+ FILE * ifh = NULL;
+ FILE * ofh = NULL;
+ size_t msize, isize, i, m;
+ seamahdr_t shdr;
+ uint8_t buf[MAX_SEAMA_META_SIZE];
+ int done = 0;
+
+ /* We need meta for searching the target image. */
+ if (o_msize == 0)
+ {
+ printf("SEAMA: need meta for searching image.\n");
+ return;
+ }
+
+ /* Walk through each input file */
+ for (i = 0; i < o_isize; i++)
+ {
+ /* verify the input file */
+ if (verify_seama(o_images[i], 0) < 0)
+ {
+ printf("SEAMA: '%s' is not a seama file !\n", o_images[i]);
+ continue;
+ }
+ /* open the input file */
+ ifh = fopen(o_images[i], "r");
+ if (!ifh) continue;
+ /* read file */
+ while (!feof(ifh) && !ferror(ifh))
+ {
+ /* read header */
+ fread(&shdr, sizeof(shdr), 1, ifh);
+ if (shdr.magic != htonl(SEAMA_MAGIC)) break;
+ /* Get the size */
+ isize = ntohl(shdr.size);
+ msize = ntohs(shdr.metasize);
+ if (isize == 0)
+ {
+ while (msize > 0)
+ {
+ m = fread(buf, sizeof(char), (msize < MAX_SEAMA_META_SIZE) ? msize : MAX_SEAMA_META_SIZE, ifh);
+ if (m <= 0) break;
+ msize -= m;
+ }
+ continue;
+ }
+ /* read checksum */
+ fread(buf, sizeof(char), 16, ifh);
+ if (msize > 0)
+ {
+ /* read META */
+ fread(buf, sizeof(char), msize, ifh);
+ if (match_meta((const char *)buf, msize))
+ {
+ printf("SEAMA: found image @ '%s', image size: %d\n", o_images[i], isize);
+ /* open output file */
+ ofh = fopen(output, "w");
+ if (!ofh) printf("SEAMA: unable to open '%s' for writting.\n",output);
+ else
+ {
+ while (isize > 0)
+ {
+ m = fread(buf, sizeof(char), (isize < MAX_SEAMA_META_SIZE) ? isize : MAX_SEAMA_META_SIZE, ifh);
+ if (m <= 0) break;
+ fwrite(buf, sizeof(char), m, ofh);
+ isize -= m;
+ }
+ fclose(ofh);
+ }
+ done++;
+ break;
+ }
+ }
+ while (isize > 0)
+ {
+ m = fread(buf, sizeof(char), (isize < MAX_SEAMA_META_SIZE) ? isize : MAX_SEAMA_META_SIZE, ifh);
+ if (m <= 0) break;
+ isize -= m;
+ }
+ }
+ /* close the file. */
+ fclose(ifh);
+ if (done) break;
+ }
+ return;
+}
+
+/*******************************************************************/
+#ifdef RGBIN_BOX
+int seama_main(int argc, char * argv[], char * env[])
+#else
+int main(int argc, char * argv[], char * env[])
+#endif
+{
+ verbose("SEAMA version " VERSION "\n");
+
+ /* parse the arguments */
+ if (parse_args(argc, argv) < 0) show_usage(9);
+
+ /* Do the works */
+ if (o_dump) dump_seama(o_dump);
+ else if (o_seal) seal_files(o_seal);
+ else if (o_extract) extract_file(o_extract);
+ else pack_files();
+
+ cleanup_exit(0);
+ return 0;
+}
--- /dev/null
+/* vi: set sw=4 ts=4: */
+/*
+ * (SEA)ttle i(MA)ge is the image which used in project seattle.
+ *
+ * Created by David Hsieh <david_hsieh@alphanetworks.com>
+ * Copyright (C) 2008-2009 Alpha Networks, Inc.
+ *
+ * This file is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either'
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * The GNU C Library is distributed in the hope that it will be useful,'
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with the GNU C Library; if not, write to the Free
+ * Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ * 02111-1307 USA.
+ */
+
+#ifndef __SEAMA_HEADER_FILE__
+#define __SEAMA_HEADER_FILE__
+
+#include <stdint.h>
+
+#define SEAMA_MAGIC 0x5EA3A417
+
+/*
+ * SEAMA looks like the following map.
+ * All the data of the header should be in network byte order.
+ *
+ * +-------------+-------------+------------
+ * | SEAMA magic | ^
+ * +-------------+-------------+ |
+ * | reserved | meta size | |
+ * +-------------+-------------+ header
+ * | image size (0 bytes) | |
+ * +-------------+-------------+ |
+ * ~ Meta data ~ v
+ * +-------------+-------------+------------
+ * | SEAMA magic | ^ ^
+ * +-------------+-------------+ | |
+ * | reserved | meta size | | |
+ * +-------------+-------------+ | |
+ * | image size | | |
+ * +-------------+-------------+ header |
+ * | | | |
+ * | 16 bytes of MD5 digest | | |
+ * | | | |
+ * | | | |
+ * +-------------+-------------+ | |
+ * ~ Meta data ~ v |
+ * +-------------+-------------+------- |
+ * | | |
+ * | Image of the 1st entity | |
+ * ~ ~ 1st entity
+ * | | |
+ * | | v
+ * +-------------+-------------+-------------
+ * | SEAMA magic | ^ ^
+ * +-------------+-------------+ | |
+ * | reserved | meta size | | |
+ * +-------------+-------------+ | |
+ * | image size | | |
+ * +-------------+-------------+ header |
+ * | | | |
+ * | 16 bytes of MD5 digest | | |
+ * | | | |
+ * | | | |
+ * +-------------+-------------+ | |
+ * ~ Meta data ~ v |
+ * +-------------+-------------+------- |
+ * | | |
+ * | Image of the 2nd entity | |
+ * ~ ~ 2nd entity
+ * | | |
+ * | | v
+ * +-------------+-------------+-------------
+ */
+
+
+/*
+ * SEAMA header
+ *
+ * |<-------- 32 bits -------->|
+ * +-------------+-------------+
+ * | SEAMA magic |
+ * +-------------+-------------+
+ * | reserved | meta size |
+ * +-------------+-------------+
+ * | image size |
+ * +-------------+-------------+
+ */
+/* seama header */
+typedef struct seama_hdr seamahdr_t;
+struct seama_hdr
+{
+ uint32_t magic; /* should always be SEAMA_MAGIC. */
+ uint16_t reserved; /* reserved for */
+ uint16_t metasize; /* size of the META data */
+ uint32_t size; /* size of the image */
+} __attribute__ ((packed));
+
+
+#endif
projects / openwrt / svn-archive / archive.git / commitdiff