update ops for jpeg_data_t.

.gitignore

@@ -45,3 +45,4 @@ mdbutool
 INSTALL
 maildirmond
 exifdate
+*.kdev4

VERSION

@@ -1 +1 @@
-0.0.1
+0.0.2

include/exijpeg.h

@@ -0,0 +1,62 @@
+/*
+ * EXIF date tool
+ *
+ * (c) Alexander Vdolainen 2023 <alex@vapaa.xyz>
+ *
+ * this 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 2 of the License, or
+ * (at your option) any later version.
+ *
+ * this 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 <http://www.gnu.org/licenses/>.";
+ *
+ */
+
+#ifndef __EXIJPEG_H__
+#define __EXIJPEG_H__
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <string.h>
+#include <time.h>
+
+#include <libexif/exif-data.h>
+
+struct exijpeg_segment {
+    unsigned char *hd;
+    unsigned long length;
+    struct exijpeg_segment *next;
+};
+
+typedef struct __exijpeg_data_type {
+    unsigned char *data;
+    char *filename;
+    size_t length;
+    int fd;
+    struct exijpeg_segment *segments;
+    struct exijpeg_segment *last;
+} exijpeg_data_t;
+
+exijpeg_data_t *exijpeg_data_alloc(void);
+
+void exijpeg_data_free(exijpeg_data_t *);
+
+/* adds a segment to jpeg_data_t */
+int exijpeg_data_add_segment(exijpeg_data_t *, unsigned char *, unsigned long);
+
+/* loads a file to jpeg structure */
+int exijpeg_data_loadfile(exijpeg_data_t *, const char *);
+
+/* release any resources allocated from the system during open file proc */
+int exijpeg_data_release(exijpeg_data_t *);
+
+#endif

include/jpegsegments.h

@@ -0,0 +1,90 @@
+/*
+ * EXIF date tool
+ *
+ * (c) Alexander Vdolainen 2023 <alex@vapaa.xyz>
+ *
+ * this 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 2 of the License, or
+ * (at your option) any later version.
+ *
+ * this 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 <http://www.gnu.org/licenses/>.";
+ *
+ */
+
+#ifndef __EXIJPEGSEGMENTS_H__
+#define __EXIJPEGSEGMENTS_H__
+
+typedef enum {
+    JPEG_MARKER_SOF0        = 0xc0,
+    JPEG_MARKER_SOF1        = 0xc1,
+    JPEG_MARKER_SOF2        = 0xc2,
+    JPEG_MARKER_SOF3        = 0xc3,
+    JPEG_MARKER_DHT		= 0xc4,
+    JPEG_MARKER_SOF5        = 0xc5,
+    JPEG_MARKER_SOF6        = 0xc6,
+    JPEG_MARKER_SOF7        = 0xc7,
+    JPEG_MARKER_JPG		= 0xc8,
+    JPEG_MARKER_SOF9        = 0xc9,
+    JPEG_MARKER_SOF10       = 0xca,
+    JPEG_MARKER_SOF11       = 0xcb,
+    JPEG_MARKER_DAC		= 0xcc,
+    JPEG_MARKER_SOF13       = 0xcd,
+    JPEG_MARKER_SOF14       = 0xce,
+    JPEG_MARKER_SOF15       = 0xcf,
+    JPEG_MARKER_RST0	= 0xd0,
+    JPEG_MARKER_RST1	= 0xd1,
+    JPEG_MARKER_RST2	= 0xd2,
+    JPEG_MARKER_RST3	= 0xd3,
+    JPEG_MARKER_RST4	= 0xd4,
+    JPEG_MARKER_RST5	= 0xd5,
+    JPEG_MARKER_RST6	= 0xd6,
+    JPEG_MARKER_RST7	= 0xd7,
+    JPEG_MARKER_SOI         = 0xd8,
+    JPEG_MARKER_EOI         = 0xd9,
+    JPEG_MARKER_SOS         = 0xda,
+    JPEG_MARKER_DQT		= 0xdb,
+    JPEG_MARKER_DNL		= 0xdc,
+    JPEG_MARKER_DRI		= 0xdd,
+    JPEG_MARKER_DHP		= 0xde,
+    JPEG_MARKER_EXP		= 0xdf,
+    JPEG_MARKER_APP0	= 0xe0,
+    JPEG_MARKER_APP1        = 0xe1,
+    JPEG_MARKER_APP2        = 0xe2,
+    JPEG_MARKER_APP3        = 0xe3,
+    JPEG_MARKER_APP4        = 0xe4,
+    JPEG_MARKER_APP5        = 0xe5,
+    JPEG_MARKER_APP6        = 0xe6,
+    JPEG_MARKER_APP7        = 0xe7,
+    JPEG_MARKER_APP8        = 0xe8,
+    JPEG_MARKER_APP9        = 0xe9,
+    JPEG_MARKER_APP10       = 0xea,
+    JPEG_MARKER_APP11       = 0xeb,
+    JPEG_MARKER_APP12       = 0xec,
+    JPEG_MARKER_APP13       = 0xed,
+    JPEG_MARKER_APP14       = 0xee,
+    JPEG_MARKER_APP15       = 0xef,
+    JPEG_MARKER_JPG0	= 0xf0,
+    JPEG_MARKER_JPG1	= 0xf1,
+    JPEG_MARKER_JPG2	= 0xf2,
+    JPEG_MARKER_JPG3	= 0xf3,
+    JPEG_MARKER_JPG4	= 0xf4,
+    JPEG_MARKER_JPG5	= 0xf5,
+    JPEG_MARKER_JPG6	= 0xf6,
+    JPEG_MARKER_JPG7	= 0xf7,
+    JPEG_MARKER_JPG8	= 0xf8,
+    JPEG_MARKER_JPG9	= 0xf9,
+    JPEG_MARKER_JPG10	= 0xfa,
+    JPEG_MARKER_JPG11	= 0xfb,
+    JPEG_MARKER_JPG12	= 0xfc,
+    JPEG_MARKER_JPG13	= 0xfd,
+    JPEG_MARKER_COM         = 0xfe
+} exijpeg_segment_t;
+
+#endif

src/Makefile.am

@@ -4,12 +4,13 @@ AM_CPPFLAGS = \
 	-DPACKAGE_LOCALE_DIR=\""$(localedir)"\" \
 	-DPACKAGE_SRC_DIR=\""$(srcdir)"\" \
 	-DPACKAGE_DATA_DIR=\""$(pkgdatadir)"\" \
-	-DCNFPATH=\""$(prefix)/etc"\"
+	-DCNFPATH=\""$(prefix)/etc"\" \
+	-I $(srcdir)
 
 AM_CFLAGS = -Wall -g
 
 bin_PROGRAMS = exifdate
 
-exifdate_SOURCES = exifdate.c
+exifdate_SOURCES = dtex.c jpeg.c exifdate.c
 
 exifdate_LDADD = $(LIBS) $(LIBEXIF_LIBS)

src/dtex.c

@@ -0,0 +1,81 @@
+/*
+ * EXIF date tool
+ *
+ * (c) Alexander Vdolainen 2023 <alex@vapaa.xyz>
+ *
+ * this 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 2 of the License, or
+ * (at your option) any later version.
+ *
+ * this 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 <http://www.gnu.org/licenses/>.";
+ *
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <getopt.h>
+#include <string.h>
+#include <time.h>
+#include <utime.h>
+
+time_t exifdt_tm(const char *dtbuf)
+{
+  struct tm tddt;
+  char buf[5], *b = (char *)dtbuf;
+
+  if(!dtbuf) return (time_t) -1;
+  if(strlen(dtbuf) < 18) return (time_t) -1;
+
+  memset(&tddt, 0, sizeof(struct tm));
+  /* year */
+  memset(buf, 0, 5);
+  strncpy(buf, dtbuf, 4);
+  tddt.tm_year = atoi(buf) - 1900;
+  /* month */
+  memset(buf, 0, 5);
+  b = strchr(b, ':');
+  if(!b) return (time_t) -1;
+  else b++;
+  strncpy(buf, b, 2);
+  tddt.tm_mon = atoi(buf) - 1;
+  /* day */
+  memset(buf, 0, 5);
+  b = strchr(b, ':');
+  if(!b) return (time_t) -1;
+  else b++;
+  strncpy(buf, b, 2);
+  tddt.tm_mday = atoi(buf);
+  /* hour */
+  memset(buf, 0, 5);
+  b = strchr(b, ' ');
+  if(!b) return (time_t) -1;
+  else b++;
+  strncpy(buf, b, 2);
+  tddt.tm_hour = atoi(buf);
+  /* minute */
+  memset(buf, 0, 5);
+  b = strchr(b, ':');
+  if(!b) return (time_t) -1;
+  else b++;
+  strncpy(buf, b, 2);
+  tddt.tm_min = atoi(buf);
+  /* second */
+  memset(buf, 0, 5);
+  b = strchr(b, ':');
+  if(!b) return (time_t) -1;
+  else b++;
+  strncpy(buf, b, 2);
+  tddt.tm_sec = atoi(buf);
+
+  return mktime(&tddt);
+}

src/exifdate.c

@@ -30,15 +30,18 @@
 
 #include <libexif/exif-data.h>
 
-#include "../config.h"
+#include <include/exijpeg.h>
+
+#include <config.h>
 
 #ifndef TOOL_FULLNAME
 #define TOOL_FULLNAME  "Jpeg EXIF data date tool"
 #endif
 
 typedef enum {
-  EDT_MODIFY = 0,
+  EDT_MODIFY_FO = 0,
   EDT_DISPLAY = 1,
+  EDT_MODIFY_ED = 2,
 } edt_mode_t;
 
 static void display_help(FILE *o, const char *exec_name)
@@ -52,68 +55,20 @@ static void display_help(FILE *o, const char *exec_name)
   fprintf(o, "\nOptions:\n");
   fprintf(o, "\t%-36s Display date and time from exif data only, don't update file creation date.\n",
           "-d | --display-date");
+  fprintf(o, "\t%-36s Fix/create EXIF creation date based on the file creation date.\n",
+          "-e | --exif-date-fix");
   fprintf(o, "\t%-36s Display help.\n", "-h | --help");
   fprintf(o, "\t%-36s Display version information.\n\n", "-v | --version");
 
   return;
 }
 
-static time_t exifdt_tm(const char *dtbuf)
+extern time_t exifdt_tm(const char *);
-{
-  struct tm tddt;
-  char buf[5], *b = (char *)dtbuf;
-
-  if(!dtbuf) return (time_t) -1;
-  if(strlen(dtbuf) < 18) return (time_t) -1;
-
-  memset(&tddt, 0, sizeof(struct tm));
-  /* year */
-  memset(buf, 0, 5);
-  strncpy(buf, dtbuf, 4);
-  tddt.tm_year = atoi(buf) - 1900;
-  /* month */
-  memset(buf, 0, 5);
-  b = strchr(b, ':');
-  if(!b) return (time_t) -1;
-  else b++;
-  strncpy(buf, b, 2);
-  tddt.tm_mon = atoi(buf) - 1;
-  /* day */
-  memset(buf, 0, 5);
-  b = strchr(b, ':');
-  if(!b) return (time_t) -1;
-  else b++;
-  strncpy(buf, b, 2);
-  tddt.tm_mday = atoi(buf);
-  /* hour */
-  memset(buf, 0, 5);
-  b = strchr(b, ' ');
-  if(!b) return (time_t) -1;
-  else b++;
-  strncpy(buf, b, 2);
-  tddt.tm_hour = atoi(buf);
-  /* minute */
-  memset(buf, 0, 5);
-  b = strchr(b, ':');
-  if(!b) return (time_t) -1;
-  else b++;
-  strncpy(buf, b, 2);
-  tddt.tm_min = atoi(buf);
-  /* second */
-  memset(buf, 0, 5);
-  b = strchr(b, ':');
-  if(!b) return (time_t) -1;
-  else b++;
-  strncpy(buf, b, 2);
-  tddt.tm_sec = atoi(buf);
-
-  return mktime(&tddt);
-}
 
 int main(int argc, char **argv)
 {
   int opt, fargs = 0, i = 0;
-  edt_mode_t mode = EDT_MODIFY;
+  edt_mode_t mode = EDT_MODIFY_FO;
   char **fn_name = NULL;
   ExifData *ef;
   ExifEntry *entry;
@@ -126,18 +81,22 @@ int main(int argc, char **argv)
     static struct option long_options[] =
     {
       {"display-date", no_argument, NULL, 'd'},
+      {"exif-date-fix", no_argument, NULL, 'e'},
       {"help", no_argument, NULL, 'h'},
       {"version", no_argument, NULL, 'v'},
       {NULL, 0, NULL, 0},
     };
 
-    if((opt = getopt_long(argc, argv, "dhv", long_options, &option_index)) == -1)
+    if((opt = getopt_long(argc, argv, "dehv", long_options, &option_index)) == -1)
       break;
 
     switch(opt) {
       case 'd':
         mode = EDT_DISPLAY;
         break;
+      case 'e':
+        mode = EDT_MODIFY_ED;
+        break;
       case 'h':
         display_help(stdout, argv[0]);
         return 0;
@@ -189,7 +148,7 @@ int main(int argc, char **argv)
             case EDT_DISPLAY:
               fprintf(stdout, "%s date and time: %s\n",fn_name[i], dtbuf);
               break;
-            case EDT_MODIFY:
+            case EDT_MODIFY_FO:
               /* convert exif format to timeval */
               exif_dt = exifdt_tm(dtbuf);
               if(exif_dt == (time_t) -1)
@@ -200,9 +159,23 @@ int main(int argc, char **argv)
                 utime(fn_name[i], &ntimes);
               }
               break;
+            case EDT_MODIFY_ED:
+              fprintf(stdout, "modify\n");
+              break;
           }
         } else fprintf(stdout, "%s: No date and time information exists in exif.\n",
                        fn_name[i]);
+      } else {
+        switch(mode) {
+          case EDT_DISPLAY:
+          case EDT_MODIFY_FO:
+            fprintf(stdout, "%s: No time date information found in EXIF.\n",
+                    fn_name[i]);
+            break;
+          case EDT_MODIFY_ED:
+            fprintf(stdout, "modify\n");
+            break;
+        }
       }
       exif_data_unref(ef);
     }

src/jpeg.c

@@ -0,0 +1,94 @@
+/*
+ * EXIF date tool
+ *
+ * (c) Alexander Vdolainen 2023 <alex@vapaa.xyz>
+ *
+ * this 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 2 of the License, or
+ * (at your option) any later version.
+ *
+ * this 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 <http://www.gnu.org/licenses/>.";
+ *
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <sys/mman.h>
+#include <fcntl.h>
+#include <string.h>
+#include <time.h>
+
+#include <libexif/exif-data.h>
+
+#include <include/exijpeg.h>
+#include <include/jpegsegments.h>
+
+#if 0
+struct exijpeg_segment {
+    unsigned char *hd;
+    unsigned long length;
+    struct exijpeg_segment *next;
+};
+
+typedef struct __exijpeg_data_type {
+    unsigned char *data;
+    char *filename;
+    size_t length;
+    int fd;
+    struct exijpeg_segment *segments;
+    struct exijpeg_segment *last;
+} exijpeg_data_t;
+#endif
+
+exijpeg_data_t *exijpeg_data_alloc(void)
+{
+    exijpeg_data_t *r = malloc(sizeof(exijpeg_data_t));
+
+    if(r) memset(r, 0, sizeof(exijpeg_data_t));
+
+    return r;
+}
+
+void exijpeg_data_free(exijpeg_data_t *s)
+{
+    struct exijpeg_segment *c = NULL;
+    if(!s) return;
+
+    if(s->filename) free(s->filename);
+    if(s->segments) {
+        for(c = s->segments; c != NULL; c = c->next) free(c);
+    }
+
+    return;
+}
+
+int exijpeg_data_add_segment(exijpeg_data_t *s, unsigned char *d, unsigned long l)
+{
+    struct exijpeg_segment *n = NULL;
+
+    if(!s || !d) return -1;
+    if(!(n = malloc(sizeof(struct exijpeg_segment)))) return -1;
+    else {
+        n->hd = d;
+        n->length = l;
+        n->next = NULL;
+    }
+    if(!(s->segments)) {
+        s->segments = n;
+        s->last = n;
+    } else {
+        s->last->next = n;
+        s->last = n;
+    }
+
+    return 0;
+}