diff --git a/COPYING b/COPYING
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--- /dev/null
+++ b/COPYING
@@ -0,0 +1,674 @@
+ GNU GENERAL PUBLIC LICENSE
+ Version 3, 29 June 2007
+
+ Copyright (C) 2007 Free Software Foundation, Inc.
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+
+ Preamble
+
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+above cannot be given local legal effect according to their terms,
+reviewing courts shall apply local law that most closely approximates
+an absolute waiver of all civil liability in connection with the
+Program, unless a warranty or assumption of liability accompanies a
+copy of the Program in return for a fee.
+
+ END OF TERMS AND CONDITIONS
+
+ How to Apply These Terms to Your New Programs
+
+ If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+ To do so, attach the following notices to the program. It is safest
+to attach them to the start of each source file to most effectively
+state the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+
+ Copyright (C)
+
+ This program is free software: you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation, either version 3 of the License, or
+ (at your option) any later version.
+
+ This program 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 General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see .
+
+Also add information on how to contact you by electronic and paper mail.
+
+ If the program does terminal interaction, make it output a short
+notice like this when it starts in an interactive mode:
+
+ Copyright (C)
+ This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+ This is free software, and you are welcome to redistribute it
+ under certain conditions; type `show c' for details.
+
+The hypothetical commands `show w' and `show c' should show the appropriate
+parts of the General Public License. Of course, your program's commands
+might be different; for a GUI interface, you would use an "about box".
+
+ You should also get your employer (if you work as a programmer) or school,
+if any, to sign a "copyright disclaimer" for the program, if necessary.
+For more information on this, and how to apply and follow the GNU GPL, see
+.
+
+ The GNU General Public License does not permit incorporating your program
+into proprietary programs. If your program is a subroutine library, you
+may consider it more useful to permit linking proprietary applications with
+the library. If this is what you want to do, use the GNU Lesser General
+Public License instead of this License. But first, please read
+.
diff --git a/NEWS b/NEWS
new file mode 100644
index 0000000..61429a2
--- /dev/null
+++ b/NEWS
@@ -0,0 +1,46 @@
+ECOLE du Logiciel Libre d'Ivry - https://e2li.org
+
+Petit utilitaire qui permet de mettre a jour un fichier contenant une image ISO.
+
+Evolution des versions :
+
+06/02/23 - Version 0.1 :
+========================
+ * Validation des structures pour lire les secteurs du fichier image.
+ * Vérification des options.
+ * La commande -l (--list) fonctionne.
+
+ Quelques exemples :
+$ isoupd debian-live-11.6.0-amd64-gnome+nonfree.iso
+ - BOOT 4
+ - DISTS 5
+ - D_I 3
+ - EFI 3
+ - FIRMWARE 8
+ - ISOLINUX 8
+ - LIVE 4
+ - POOL 4
+ - _DISK 5
+$ isoupd debian-live-11.6.0-amd64-gnome+nonfree.iso -d firmware
+ - AMD64_MICROCODE_3_20191218_.DEB 31
+ - ARM_TRUSTED_FIRMWARE_TOOLS_.DEB 31
+ - ATMEL_FIRMWARE_1_3_4_1_ALL.DEB 30
+ - BLUEZ_FIRMWARE_1_2_4_ALL.DEB 28
+ - DAHDI_FIRMWARE_NONFREE_2_11.DEB 31
+ - DNS323_FIRMWARE_TOOLS_0_7_3.DEB 31
+ - FIRMWARE_AMD_GRAPHICS_20210.DEB 31
+ - FIRMWARE_ATH9K_HTC_1_4_0_10.DEB 31
+ - FIRMWARE_ATHEROS_20210315_3.DEB 31
+ - FIRMWARE_BNX2X_20210315_3_A.DEB 31
+$ isoupd --help
+isoupd version 0.1 (c) E2L 2023
+Utilisation : isoupd [options] isofile
+ -l, --list liste d'un repertoire (defaut)
+ -p, --put modifie un fichier de l'iso
+ -g, --get extrait un fichier de l'iso
+ -v, --verbose mode verbeux, avec trace de la recherche
+ -f, --file chemin du fichier dans l'iso
+ -h, --host nom du fichier host. Obligatoire pour -p et -g
+ -d, --dir nom du repertoire a lister dans l'iso
+ --help cette aide !
+
diff --git a/README.md b/README.md
index 43e773e..6f3cf74 100644
--- a/README.md
+++ b/README.md
@@ -20,7 +20,3 @@ https://www.iso.org/fr/iso-9660-images-for-computer-files.html
et bien d'autres !
-06/02/23 - Version 0.1 :
- * Validation des structures pour lire les secteurs du fichier image.
- * Vérification des options.
- * La commande -l (--list) fonctionne.
diff --git a/src/Makefile b/src/Makefile
new file mode 100644
index 0000000..a8dba01
--- /dev/null
+++ b/src/Makefile
@@ -0,0 +1,9 @@
+# Makefile pour Linux
+
+isoupd : isoupd.c
+ cc -o isoupd isoupd.c
+
+clean :
+ rm -f isoupd
+
+
diff --git a/src/isoupd.c b/src/isoupd.c
new file mode 100644
index 0000000..bee99f1
--- /dev/null
+++ b/src/isoupd.c
@@ -0,0 +1,397 @@
+/* Copyright (C) 2022-2023 Patrick H. E. Foubet - e2li.org
+ Ecole du Logiciel Libre d'Ivry - FRANCE
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or any
+later version.
+
+This program 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 General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program. If not, see
+*******************************************************************/
+#include
+#include
+#include
+#include
+#include
+#include
+#include
+#include
+
+#define VERSION "0.1"
+typedef uint32_t loc_t;
+typedef uint8_t byte;
+#define CD_SECTOR_SIZE 0x800
+#define ISO_PADSIZE 0x10
+
+#ifndef __cplusplus
+typedef uint8_t bool;
+#define true (uint8_t)1
+#define false (uint8_t)0
+#endif
+
+#define ALIGN(x,y) (((x) + ((y)-1)) & (~((y)-1)))
+
+static char *isofilename, *targetfilename, *targetdirname, *hostfilename;
+static bool length_override = false;
+
+struct iso_directory_t {
+ uint8_t len;
+ uint8_t ex_len;
+ uint32_t lba;
+ uint32_t big_lba;
+ uint32_t file_len;
+ uint32_t big_file_len;
+ byte time_date[7];
+ byte file_flags;
+ byte file_unit_size;
+ byte interleave_gap_size;
+ uint16_t volseq_num;
+ uint16_t big_volseq_num;
+ uint8_t fileid_len;
+ char fileid[0];
+} __attribute__((packed));
+typedef struct iso_directory_t iso_directory_t;
+
+int getfilesize(FILE *f) {
+ int spos = ftell(f);
+ fseek(f, 0, SEEK_END);
+ int len = ftell(f);
+ fseek(f, spos, SEEK_SET);
+ return len;
+}
+static int verbose_flag;
+static int mode_flag=-2; /* 0=list, 1=put, -1=get */
+
+void CdSetloc(FILE *f, loc_t newpos) {
+ fseeko(f, newpos * CD_SECTOR_SIZE, SEEK_SET);
+}
+
+void CdRead(void *buf, loc_t nsectors, FILE *f) {
+ fread(buf, nsectors, CD_SECTOR_SIZE, f);
+}
+
+void CdWrite(void *buf, loc_t nsectors, FILE *f) {
+ fwrite(buf, nsectors, CD_SECTOR_SIZE, f);
+}
+
+bool ispvd(byte *sec) {
+ return(
+ (sec[0] == 1) &&
+ (memcmp(sec+1, "CD001", 5) == 0)
+ );
+}
+
+bool streq(const char *s1, const char *s2) {
+ return (strcasecmp(s1,s2) == 0);
+}
+
+bool scmplen(const char *s1, const char *s2, int len) {
+ for(int i = 0; i < len; i += 1) {
+ if(tolower(s1[i]) != tolower(s2[i])) {
+ return false;
+ }
+ }
+ return true;
+}
+
+loc_t CdTell(FILE *isofile) {
+ loc_t s = ftell(isofile);
+ return (s & (~(0x7FF))) / 0x800;
+}
+
+bool CdFindFileInDir(iso_directory_t *out_dir, FILE* isofile, const char *filename, int filename_len, loc_t *out_secnum, loc_t *out_offset) {
+ byte sec[CD_SECTOR_SIZE];
+ iso_directory_t *dir = (iso_directory_t*)(sec);
+ int slen = filename_len;
+ int dirp = 0;
+
+ CdRead(sec, 1, isofile);
+
+ if (verbose_flag) printf("FFID %s %d\n", filename, slen);
+
+ while(dir->len != 0) {
+ int dlen = dir->fileid_len;
+ if(!(dir->file_flags & 2)) {
+ dlen -= 2;
+ }
+ if ((mode_flag == 0) && ((strcmp(filename,"*")==0)||(strcmp(filename,"/*")==0))) {
+ if (dlen>0) {
+ dir->fileid[dlen] = '\0';
+ if ((dlen==1) && (dir->fileid[0] <= ' ')) {
+ if (verbose_flag) printf(" + 0x%x %d\n",(int)dir->fileid[0], dlen);
+ } else printf(" - %s %d\n",dir->fileid, dlen);
+ }
+ } else {
+ if(dlen == slen) {
+ if (verbose_flag) printf(" + %s\n",dir->fileid);
+ if(scmplen(dir->fileid, filename, slen) == true) {
+ *out_dir = *dir;
+ if(NULL != out_secnum) {
+ *out_secnum = CdTell(isofile) - 1;
+ }
+ if(NULL != out_offset) {
+ *out_offset = dirp;
+ }
+ return true;
+ }
+ }
+ }
+ dirp += dir->len;
+ if(dirp >= 0x800) {
+ CdRead(sec, 1, isofile);
+ dirp = dirp % 0x800;
+ }
+ dir = (iso_directory_t*)(sec + dirp);
+ }
+ return false;
+}
+
+bool CdFindFile(iso_directory_t *outdir, FILE *isofile, const char *filename, loc_t *out_secnum, loc_t *out_offset)
+{
+ const char *next;
+ const char *cur = filename;
+ int slen;
+ if (verbose_flag) printf("> %s\n",filename);
+ do {
+ next = strchr(cur, '/');
+ if(next == NULL) {
+ slen = strlen(cur);
+ } else {
+ slen = (int)(next - cur);
+ }
+ if(false == CdFindFileInDir(outdir, isofile, cur, slen, out_secnum, out_offset)) {
+ return false;
+ }
+ if(next != NULL) {
+ CdSetloc(isofile, outdir->lba);
+ next++; cur = next;
+ } else break;
+ } while(next != NULL);
+ return true;
+}
+
+/* options definitions */
+static int help_flag;
+static struct option long_options[] = {
+ {"verbose", no_argument, &verbose_flag, 1},
+ {"help", no_argument, &help_flag, 1},
+ {"list", no_argument, 0, 'l'},
+ {"put", no_argument, 0, 'p'},
+ {"get", no_argument, 0, 'g'},
+ {"host", required_argument, 0, 'h'},
+ {"file", required_argument, 0, 'f'},
+ {"dir", required_argument, 0, 'd'},
+ {0, 0, 0, 0}
+};
+
+void explain(void)
+{
+ puts("Utilisation : isoupd [options] isofile");
+ puts(" -l, --list liste d'un repertoire (defaut)");
+ puts(" -p, --put modifie un fichier de l'iso");
+ puts(" -g, --get extrait un fichier de l'iso");
+ puts(" -v, --verbose mode verbeux, avec trace de la recherche");
+ puts(" -f, --file chemin du fichier dans l'iso");
+ puts(" -h, --host nom du fichier host. Obligatoire pour -p et -g");
+ puts(" -d, --dir nom du repertoire a lister dans l'iso");
+}
+void messerr(char * m, int err)
+{
+ fprintf(stderr,"ERREUR : %s !!\n", m);
+ if (err) {
+ explain();
+ exit(err);
+ }
+}
+static int mode_contrad=0;
+void errmode(char * o)
+{
+ fprintf(stderr,"Option %s en contradiction avec une autre !\n",o);
+ mode_contrad=1;
+}
+
+int main(int N, char *P[])
+{
+int c, l, opt_ind = 0;
+FILE *hostfile, *isofile;
+char etoile[2] = "*";
+
+ if(sizeof(iso_directory_t) != 33) {
+ fprintf(stderr, "Bad Install %lu\n", sizeof(iso_directory_t));
+ return 9;
+ }
+ while (1) {
+ if ((c=getopt_long(N,P,"vlpgd:h:f:",long_options,&opt_ind))==-1) break;
+ switch (c) {
+ case 0:
+ if (long_options[opt_ind].flag != 0) break;
+ printf ("option %s", long_options[opt_ind].name);
+ if (optarg) printf (" avec arg %s", optarg);
+ printf ("\n");
+ break;
+
+ case 'l':
+ if (mode_flag != -2) errmode(P[opt_ind]);
+ mode_flag=0;
+ break;
+ case 'p':
+ if (mode_flag != -2) errmode(P[opt_ind]);
+ mode_flag=1;
+ break;
+ case 'g':
+ if (mode_flag != -2) errmode(P[opt_ind]);
+ mode_flag=-1;
+ break;
+ case 'v':
+ verbose_flag=1;
+ break;
+ case 'h':
+ hostfilename = optarg;
+ break;
+ case 'f':
+ targetfilename = optarg;
+ break;
+ case 'd':
+ l = strlen(optarg);
+ if (optarg[l-1]=='/') { l--; optarg[l]='\0'; }
+ targetdirname = (char*) malloc(l+3);
+ if (targetdirname == NULL) { perror("malloc"); return 4; }
+ sprintf(targetdirname, "%s/%s", optarg,etoile);
+ break;
+ case '?': /* getopt_long already printed an error message. */
+ explain();
+ return 1;
+ default:
+ abort ();
+ }
+ }
+ if (help_flag) {
+ printf("isoupd version %s (c) E2L 2023\n",VERSION);
+ explain();
+ return 0;
+ }
+ if (optind < N) {
+ isofilename = P[optind++];
+ if (optind < N) {
+ fprintf (stderr, "Non pris en compte : ");
+ while (optind < N) fprintf (stderr, "%s ", P[optind++]);
+ fprintf(stderr, "\n");
+ messerr("parametre(s) inutile(s)",3);
+ }
+ }
+ /* verifications */
+ if (! isofilename) messerr("Fichier ISO absent",2);
+ if (mode_flag == -2) mode_flag = 0; /* defaut */
+ switch(mode_flag) {
+ case 0 : /* list */
+ if (targetfilename) messerr("option -f inutile",2);
+ if (hostfilename) messerr("option -h inutile",2);
+ if (!targetdirname) targetdirname = etoile;
+ if (verbose_flag) printf("Liste de %s dans %s\n",targetdirname,isofilename);
+ targetfilename = targetdirname;
+ break;
+ case 1 : /* put */
+ if (targetdirname) messerr("option -d inutile",2);
+ if (!targetfilename) messerr("Chemin du fichier dans l'ISO absent",2);
+ if (!hostfilename) messerr("fichier host source absent",2);
+ if (verbose_flag) printf("PUT de %s vers %s dans %s\n",hostfilename,targetfilename,isofilename);
+ break;
+ case -1 : /* get */
+ if (targetdirname) messerr("option -d inutile",2);
+ if (!targetfilename) messerr("Chemin du fichier dans l'ISO absent",2);
+ if (!hostfilename) messerr("fichier host destination absent",2);
+ if (verbose_flag) printf("GET de %s dans %s vers %s\n",targetfilename,isofilename,hostfilename);
+ break;
+ }
+ if (verbose_flag) printf("Verbose : mode = %d\n",mode_flag);
+
+ if ((isofile = fopen(isofilename, "r+")) == NULL) {
+ fprintf(stderr, "Erreur ouverture ISO %s\n", isofilename);
+ return 1;
+ }
+ if(hostfilename != NULL) {
+ if ((hostfile = fopen(hostfilename, "r")) == NULL) {
+ fprintf(stderr, "Erreur ouverture fichier %s\n", hostfilename);
+ return 1;
+ }
+ }
+ byte sec[CD_SECTOR_SIZE];
+ iso_directory_t *dir = (iso_directory_t*)(sec);
+ CdSetloc(isofile, ISO_PADSIZE);
+ CdRead(sec, 1, isofile);
+ if(ispvd(sec) == false) {
+ fprintf(stderr, "%s n'est pas un fichier ISO\n", isofilename);
+ return 1;
+ }
+ loc_t root_lba = *(loc_t*)(sec+158);
+ if (verbose_flag) printf("root lba = %x\n", root_lba);
+ CdSetloc(isofile, root_lba);
+ loc_t dir_lba, dir_offset;
+ bool s = CdFindFile(dir, isofile, targetfilename, &dir_lba, &dir_offset);
+ if (!mode_flag) { /* list */
+ fclose(isofile);
+ return 0;
+ }
+ if(false == s) {
+ fprintf(stderr, "Fichier %s absent de l'ISO %s\n", targetfilename, isofilename);
+ return 1;
+ }
+ CdSetloc(isofile, dir_lba);
+ CdRead(sec, 1, isofile);
+ dir = (iso_directory_t*)(sec + dir_offset);
+ printf("File size on ISO is %d\n", dir->file_len);
+ int maxsize = ALIGN(dir->file_len, 0x800);
+ int len = getfilesize(hostfile);
+ int aligned_len = ALIGN(len, 0x800);
+ printf("File size on HOST is %d\n", len);
+ return 0; /* test */
+ if(false == length_override) {
+ if(len > maxsize) {
+ fprintf(stderr, "Le fichier %s depasse de %d octets (%d > %d)\n",
+ hostfilename,
+ len - maxsize,
+ len, maxsize
+ );
+ fclose(hostfile);
+ fclose(isofile);
+ return 1;
+ }
+ if((uint32_t)len != dir->file_len) {
+ if((uint32_t)aligned_len < dir->file_len) {
+ printf("ATTENTION: La mise en place de ce fichier va retrecir l'espace d'allocation disponible !\n");
+ printf(" (il sera de %d octets)\n", aligned_len);
+ }
+ printf("Les tailles sont differentes mais compatibles. Modification ? [o/N]\n");
+ int ch = getchar();
+ if((ch != 'o') && (ch != 'O')) {
+ printf("Annulation !!\n");
+ return 1;
+ }
+ }
+ }
+ byte *filedata = (byte*)(malloc(aligned_len));
+ memset(filedata, 0, aligned_len);
+ fread(filedata, 1, len, hostfile);
+ fclose(hostfile);
+
+ printf("Ecriture de %d octets sur le secteur %u\n", len, dir->lba);
+ CdSetloc(isofile, dir->lba);
+ CdWrite(filedata, (aligned_len / CD_SECTOR_SIZE), isofile);
+
+ dir->file_len = len;
+ printf("Ecriture d'un nouveau repertoire sur %u\n", dir_lba);
+ CdSetloc(isofile, dir_lba);
+ CdWrite(sec, 1, isofile);
+
+ printf("OK !\n");
+
+ fclose(isofile);
+ return 0;
+}
+