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-rw-r--r--test/test-value.c367
1 files changed, 350 insertions, 17 deletions
diff --git a/test/test-value.c b/test/test-value.c
index 715ce10..860845e 100644
--- a/test/test-value.c
+++ b/test/test-value.c
@@ -1,6 +1,10 @@
/* test-value.c
*
- * Copyright 2002 Lutz M\uffffller <lutz@users.sourceforge.net>
+ * Creates all the types of tags supported in exif_entry_initialize() and
+ * ensures that exif_entry_get_value() properly truncates the output of each
+ * one according to the buffer size available.
+ *
+ * Copyright 2002 Lutz Mueller <lutz@users.sourceforge.net>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
@@ -23,39 +27,368 @@
#include <stdio.h>
#include <stdlib.h>
+#include <string.h>
+
+/*
+ * List of tags to test, one per default initialized type.
+ * There should be one for every block in exif_entry_initialize() and
+ * exif_entry_get_value().
+ */
+ExifTag trunc_test_tags[] = {
+ EXIF_TAG_PIXEL_X_DIMENSION,
+ EXIF_TAG_SUBJECT_LOCATION,
+ EXIF_TAG_IMAGE_WIDTH,
+ EXIF_TAG_ORIENTATION,
+ EXIF_TAG_SAMPLES_PER_PIXEL,
+ EXIF_TAG_BITS_PER_SAMPLE,
+ EXIF_TAG_X_RESOLUTION,
+ EXIF_TAG_WHITE_POINT,
+ EXIF_TAG_REFERENCE_BLACK_WHITE,
+ EXIF_TAG_DATE_TIME,
+ EXIF_TAG_IMAGE_DESCRIPTION,
+ EXIF_TAG_EXIF_VERSION,
+ EXIF_TAG_FLASH_PIX_VERSION,
+ EXIF_TAG_COPYRIGHT,
+ EXIF_TAG_FILE_SOURCE,
+ EXIF_TAG_COMPONENTS_CONFIGURATION,
+ EXIF_TAG_SCENE_TYPE,
+ EXIF_TAG_YCBCR_SUB_SAMPLING,
+ EXIF_TAG_PLANAR_CONFIGURATION,
+};
+
+/*
+ * These tags produce different outputs depending on the amount of buffer space
+ * available.
+ */
+ExifTag nonuniform_test_tags[] = {
+ EXIF_TAG_RESOLUTION_UNIT,
+ EXIF_TAG_COLOR_SPACE,
+ EXIF_TAG_METERING_MODE,
+};
+
+/*
+ * These tags need a nonzero rational number to be interesting.
+ * They must have space for a rational or srational created automatically by
+ * exif_entry_initialize().
+ */
+ExifTag rational_test_tags[] = {
+ EXIF_TAG_FNUMBER,
+ EXIF_TAG_APERTURE_VALUE,
+ EXIF_TAG_MAX_APERTURE_VALUE,
+ EXIF_TAG_FOCAL_LENGTH,
+ EXIF_TAG_SUBJECT_DISTANCE,
+ EXIF_TAG_EXPOSURE_TIME,
+ EXIF_TAG_SHUTTER_SPEED_VALUE,
+ EXIF_TAG_BRIGHTNESS_VALUE,
+ EXIF_TAG_EXPOSURE_BIAS_VALUE,
+};
+
+/*
+ * Verify that the entry is properly truncated to the buffer length within
+ * exif_entry_get_value(). If uniform is zero, then only check that the
+ * resulting string fits within the buffer and don't check its content.
+ */
+static void check_entry_trunc(ExifEntry *e, int uniform)
+{
+ unsigned int i;
+ char v[1024], full[1024]; /* Large enough to never truncate output */
+
+ printf ("Tag 0x%x\n", (int) e->tag);
+
+ /* Get the full, untruncated string to use as the expected value */
+ exif_entry_get_value (e, full, sizeof(full));
+ printf ("Full: '%s'\n", full);
+
+ for (i = strlen(full); i > 0; i--) {
+ /* Make sure the buffer isn't NUL-terminated to begin with */
+ memset(v, '*', sizeof(v));
+ exif_entry_get_value (e, v, i);
+ /* Truncate the full string by one on each iteration */
+ full[i-1] = '\0';
+ if ((strlen(v) >= i) || (uniform && strcmp(full, v))) {
+ printf("Bad truncation!\n");
+ printf("Length %2i: '%s'\n", i, v);
+ exit(1);
+ }
+ }
+}
int
main ()
{
- ExifData *d;
+ ExifData *data;
ExifEntry *e;
- char v[1024];
- ExifSRational r = {1., 20.};
- unsigned int i;
+ ExifMem *mem;
+ unsigned i;
+ static const ExifSRational r = {1., 20.}; /* a nonzero number */
+ static const char user_comment[] = "ASCII\0\0\0A Long User Comment";
+ static const char xp_comment[] = "U\0C\0S\0-\0002\0 \0C\0o\0m\0m\0e\0n\0t\0";
+ static const char interop[] = "R98";
+ static const char subsec[] = "130 ";
+ static const ExifRational gpsh = {12., 1.};
+ static const ExifRational gpsm = {34., 1.};
+ static const ExifRational gpss = {56780., 1000.};
+
+ data = exif_data_new ();
+ if (!data) {
+ fprintf (stderr, "Error running exif_data_new()\n");
+ exit(13);
+ }
+
+ /* Full initialization/truncation tests */
+ for (i=0; i < sizeof(trunc_test_tags)/sizeof(trunc_test_tags[0]); ++i) {
+ e = exif_entry_new ();
+ if (!e) {
+ fprintf (stderr, "Error running exif_entry_new()\n");
+ exit(13);
+ }
+ exif_content_add_entry (data->ifd[EXIF_IFD_0], e);
+ exif_entry_initialize (e, trunc_test_tags[i]);
+ check_entry_trunc(e, 1);
+ exif_content_remove_entry (data->ifd[EXIF_IFD_0], e);
+ exif_entry_unref (e);
+ }
+
+ /* Nonuniform initialization/truncation tests */
+ for (i=0; i < sizeof(nonuniform_test_tags)/sizeof(nonuniform_test_tags[0]);
+ ++i) {
+ e = exif_entry_new ();
+ if (!e) {
+ fprintf (stderr, "Error running exif_entry_new()\n");
+ exit(13);
+ }
+ exif_content_add_entry (data->ifd[EXIF_IFD_0], e);
+ exif_entry_initialize (e, nonuniform_test_tags[i]);
+ check_entry_trunc(e, 0);
+ exif_content_remove_entry (data->ifd[EXIF_IFD_0], e);
+ exif_entry_unref (e);
+ }
+
+ /* Rational number initialization/truncation tests */
+ for (i=0; i < sizeof(rational_test_tags)/sizeof(rational_test_tags[0]);
+ ++i) {
+ e = exif_entry_new ();
+ if (!e) {
+ fprintf (stderr, "Error running exif_entry_new()\n");
+ exit(13);
+ }
+ exif_content_add_entry (data->ifd[EXIF_IFD_0], e);
+ exif_entry_initialize (e, rational_test_tags[i]);
+ exif_set_srational (e->data, exif_data_get_byte_order (data), r);
+ /* In case this tag needs an unsigned rational instead,
+ * fix the type automatically */
+ exif_entry_fix (e);
+ check_entry_trunc(e, 1);
+ exif_content_remove_entry (data->ifd[EXIF_IFD_0], e);
+ exif_entry_unref (e);
+ }
+
+ /* Create a memory allocator to manage the remaining ExifEntry structs */
+ mem = exif_mem_new_default();
+ if (!mem) {
+ fprintf (stderr, "Out of memory\n");
+ exit(13);
+ }
+
+ /* EXIF_TAG_SUB_SEC_TIME initialization/truncation tests */
+ e = exif_entry_new_mem (mem);
+ if (!e) {
+ fprintf (stderr, "Out of memory\n");
+ exit(13);
+ }
+ exif_content_add_entry (data->ifd[EXIF_IFD_0], e);
+ exif_entry_initialize (e, EXIF_TAG_SUB_SEC_TIME);
+ e->size = sizeof(subsec); /* include NUL */
+ e->components = e->size;
+ /* Allocate memory to use for holding the tag data */
+ e->data = exif_mem_alloc(mem, e->size);
+ if (!e->data) {
+ fprintf (stderr, "Out of memory\n");
+ exit(13);
+ }
+ memcpy(e->data, subsec, e->size);
+ check_entry_trunc(e, 1);
+ exif_content_remove_entry (data->ifd[EXIF_IFD_0], e);
+ exif_entry_unref (e);
+
+ /* EXIF_TAG_USER_COMMENT initialization/truncation tests */
+ e = exif_entry_new_mem (mem);
+ if (!e) {
+ fprintf (stderr, "Out of memory\n");
+ exit(13);
+ }
+ exif_content_add_entry (data->ifd[EXIF_IFD_0], e);
+ exif_entry_initialize (e, EXIF_TAG_USER_COMMENT);
+ e->size = sizeof(user_comment) - 1;
+ e->components = e->size;
+ /* Allocate memory to use for holding the tag data */
+ e->data = exif_mem_alloc(mem, e->size);
+ if (!e->data) {
+ fprintf (stderr, "Out of memory\n");
+ exit(13);
+ }
+ memcpy(e->data, user_comment, e->size);
+ check_entry_trunc(e, 1);
+ exif_content_remove_entry (data->ifd[EXIF_IFD_0], e);
+ exif_entry_unref (e);
- d = exif_data_new ();
- if (!d) {
- printf ("Error running exif_data_new()\n");
+ /* EXIF_TAG_XP_COMMENT truncation tests */
+ e = exif_entry_new_mem (mem);
+ if (!e) {
+ fprintf (stderr, "Out of memory\n");
exit(13);
}
+ exif_content_add_entry (data->ifd[EXIF_IFD_0], e);
+ exif_entry_initialize (e, EXIF_TAG_XP_COMMENT);
+ e->format = EXIF_FORMAT_BYTE;
+ e->size = sizeof(xp_comment) - 1;
+ e->components = e->size;
+ /* Allocate memory to use for holding the tag data */
+ e->data = exif_mem_alloc(mem, e->size);
+ if (!e->data) {
+ fprintf (stderr, "Out of memory\n");
+ exit(13);
+ }
+ memcpy(e->data, xp_comment, e->size);
+ check_entry_trunc(e, 1);
+ exif_content_remove_entry (data->ifd[EXIF_IFD_0], e);
+ exif_entry_unref (e);
- e = exif_entry_new ();
+ /* EXIF_TAG_INTEROPERABILITY_VERSION truncation tests */
+ e = exif_entry_new_mem (mem);
if (!e) {
- printf ("Error running exif_entry_new()\n");
+ fprintf (stderr, "Out of memory\n");
exit(13);
}
+ exif_content_add_entry (data->ifd[EXIF_IFD_INTEROPERABILITY], e);
+ exif_entry_initialize (e, EXIF_TAG_INTEROPERABILITY_VERSION);
+ e->format = EXIF_FORMAT_UNDEFINED; /* The spec says ASCII, but libexif
+ allows UNDEFINED */
+ e->size = sizeof(interop); /* include NUL */
+ e->components = e->size;
+ /* Allocate memory to use for holding the tag data */
+ e->data = exif_mem_alloc(mem, e->size);
+ if (!e->data) {
+ fprintf (stderr, "Out of memory\n");
+ exit(13);
+ }
+ memcpy(e->data, interop, e->size);
+ check_entry_trunc(e, 1);
+ exif_content_remove_entry (data->ifd[EXIF_IFD_INTEROPERABILITY], e);
+ exif_entry_unref (e);
- exif_content_add_entry (d->ifd[EXIF_IFD_0], e);
- exif_entry_initialize (e, EXIF_TAG_SHUTTER_SPEED_VALUE);
- exif_set_srational (e->data, exif_data_get_byte_order (d), r);
+ /* EXIF_TAG_GPS_VERSION_ID truncation tests */
+ e = exif_entry_new_mem (mem);
+ if (!e) {
+ fprintf (stderr, "Out of memory\n");
+ exit(13);
+ }
+ exif_content_add_entry (data->ifd[EXIF_IFD_GPS], e);
+ exif_entry_initialize (e, EXIF_TAG_GPS_VERSION_ID);
+ e->format = EXIF_FORMAT_BYTE;
+ e->size = 4;
+ e->components = e->size;
+ /* Allocate memory to use for holding the tag data */
+ e->data = exif_mem_alloc(mem, e->size);
+ if (!e->data) {
+ fprintf (stderr, "Out of memory\n");
+ exit(13);
+ }
+ e->data[0] = 2;
+ e->data[1] = 2;
+ e->data[2] = 0;
+ e->data[3] = 0;
+ check_entry_trunc(e, 1);
+ exif_content_remove_entry (data->ifd[EXIF_IFD_GPS], e);
+ exif_entry_unref (e);
- for (i = 30; i > 0; i--) {
- printf ("Length %2i: '%s'\n", i,
- exif_entry_get_value (e, v, i));
+ /* EXIF_TAG_GPS_ALTITUDE_REF truncation tests */
+ e = exif_entry_new_mem (mem);
+ if (!e) {
+ fprintf (stderr, "Out of memory\n");
+ exit(13);
+ }
+ exif_content_add_entry (data->ifd[EXIF_IFD_GPS], e);
+ exif_entry_initialize (e, EXIF_TAG_GPS_ALTITUDE_REF);
+ e->format = EXIF_FORMAT_BYTE;
+ e->size = 1;
+ e->components = e->size;
+ /* Allocate memory to use for holding the tag data */
+ e->data = exif_mem_alloc(mem, e->size);
+ if (!e->data) {
+ fprintf (stderr, "Out of memory\n");
+ exit(13);
+ }
+ e->data[0] = 1;
+ check_entry_trunc(e, 1);
+ exif_content_remove_entry (data->ifd[EXIF_IFD_GPS], e);
+ exif_entry_unref (e);
+
+ /* EXIF_TAG_GPS_TIME_STAMP truncation tests */
+ e = exif_entry_new_mem (mem);
+ if (!e) {
+ fprintf (stderr, "Out of memory\n");
+ exit(13);
}
+ exif_content_add_entry (data->ifd[EXIF_IFD_GPS], e);
+ exif_entry_initialize (e, EXIF_TAG_GPS_TIME_STAMP);
+ e->format = EXIF_FORMAT_RATIONAL;
+ e->components = 3;
+ e->size = e->components * exif_format_get_size(EXIF_FORMAT_RATIONAL);
+ /* Allocate memory to use for holding the tag data */
+ e->data = exif_mem_alloc(mem, e->size);
+ if (!e->data) {
+ fprintf (stderr, "Out of memory\n");
+ exit(13);
+ }
+ exif_set_rational(e->data, exif_data_get_byte_order (data), gpsh);
+ exif_set_rational(e->data+8, exif_data_get_byte_order (data), gpsm);
+ exif_set_rational(e->data+16, exif_data_get_byte_order (data), gpss);
+ check_entry_trunc(e, 1);
+ exif_content_remove_entry (data->ifd[EXIF_IFD_GPS], e);
+ exif_entry_unref (e);
+ /* EXIF_TAG_SUBJECT_AREA truncation tests */
+ e = exif_entry_new_mem (mem);
+ if (!e) {
+ fprintf (stderr, "Out of memory\n");
+ exit(13);
+ }
+ exif_content_add_entry (data->ifd[EXIF_IFD_0], e);
+ exif_entry_initialize (e, EXIF_TAG_SUBJECT_AREA);
+ e->format = EXIF_FORMAT_SHORT;
+ /* This tags is interpreted differently depending on # components */
+ /* Rectangle */
+ e->components = 4;
+ e->size = e->components * exif_format_get_size(EXIF_FORMAT_SHORT);
+ /* Allocate memory to use for holding the tag data */
+ e->data = exif_mem_alloc(mem, e->size);
+ if (!e->data) {
+ fprintf (stderr, "Out of memory\n");
+ exit(13);
+ }
+ exif_set_short(e->data, exif_data_get_byte_order (data), 123);
+ exif_set_short(e->data+2, exif_data_get_byte_order (data), 456);
+ exif_set_short(e->data+4, exif_data_get_byte_order (data), 78);
+ exif_set_short(e->data+6, exif_data_get_byte_order (data), 90);
+ check_entry_trunc(e, 1);
+ /* Circle */
+ e->components = 3;
+ e->size = e->components * exif_format_get_size(EXIF_FORMAT_SHORT);
+ check_entry_trunc(e, 1);
+ /* Centre */
+ e->components = 2;
+ e->size = e->components * exif_format_get_size(EXIF_FORMAT_SHORT);
+ check_entry_trunc(e, 1);
+ /* Invalid */
+ e->components = 1;
+ e->size = e->components * exif_format_get_size(EXIF_FORMAT_SHORT);
+ check_entry_trunc(e, 1);
+ exif_content_remove_entry (data->ifd[EXIF_IFD_0], e);
exif_entry_unref (e);
- exif_data_unref (d);
+
+ exif_mem_unref(mem);
+ exif_data_unref (data);
return 0;
}
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