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path: root/src/Common/libzip/zip_extra_field.c
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-rw-r--r--src/Common/libzip/zip_extra_field.c374
1 files changed, 187 insertions, 187 deletions
diff --git a/src/Common/libzip/zip_extra_field.c b/src/Common/libzip/zip_extra_field.c
index 7114a251..92cec011 100644
--- a/src/Common/libzip/zip_extra_field.c
+++ b/src/Common/libzip/zip_extra_field.c
@@ -1,9 +1,9 @@
/*
zip_extra_field.c -- manipulate extra fields
- Copyright (C) 2012-2019 Dieter Baron and Thomas Klausner
+ Copyright (C) 2012-2021 Dieter Baron and Thomas Klausner
This file is part of libzip, a library to manipulate ZIP archives.
- The authors can be contacted at <libzip@nih.at>
+ The authors can be contacted at <info@libzip.org>
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
@@ -44,19 +44,19 @@ _zip_ef_clone(const zip_extra_field_t *ef, zip_error_t *error) {
head = prev = NULL;
while (ef) {
- if ((def = _zip_ef_new(ef->id, ef->size, ef->data, ef->flags)) == NULL) {
- zip_error_set(error, ZIP_ER_MEMORY, 0);
- _zip_ef_free(head);
- return NULL;
- }
-
- if (head == NULL)
- head = def;
- if (prev)
- prev->next = def;
- prev = def;
-
- ef = ef->next;
+ if ((def = _zip_ef_new(ef->id, ef->size, ef->data, ef->flags)) == NULL) {
+ zip_error_set(error, ZIP_ER_MEMORY, 0);
+ _zip_ef_free(head);
+ return NULL;
+ }
+
+ if (head == NULL)
+ head = def;
+ if (prev)
+ prev->next = def;
+ prev = def;
+
+ ef = ef->next;
}
return head;
@@ -72,27 +72,27 @@ _zip_ef_delete_by_id(zip_extra_field_t *ef, zip_uint16_t id, zip_uint16_t id_idx
head = ef;
prev = NULL;
for (; ef; ef = (prev ? prev->next : head)) {
- if ((ef->flags & flags & ZIP_EF_BOTH) && ((ef->id == id) || (id == ZIP_EXTRA_FIELD_ALL))) {
- if (id_idx == ZIP_EXTRA_FIELD_ALL || i == id_idx) {
- ef->flags &= ~(flags & ZIP_EF_BOTH);
- if ((ef->flags & ZIP_EF_BOTH) == 0) {
- if (prev)
- prev->next = ef->next;
- else
- head = ef->next;
- ef->next = NULL;
- _zip_ef_free(ef);
-
- if (id_idx == ZIP_EXTRA_FIELD_ALL)
- continue;
- }
- }
-
- i++;
- if (i > id_idx)
- break;
- }
- prev = ef;
+ if ((ef->flags & flags & ZIP_EF_BOTH) && ((ef->id == id) || (id == ZIP_EXTRA_FIELD_ALL))) {
+ if (id_idx == ZIP_EXTRA_FIELD_ALL || i == id_idx) {
+ ef->flags &= ~(flags & ZIP_EF_BOTH);
+ if ((ef->flags & ZIP_EF_BOTH) == 0) {
+ if (prev)
+ prev->next = ef->next;
+ else
+ head = ef->next;
+ ef->next = NULL;
+ _zip_ef_free(ef);
+
+ if (id_idx == ZIP_EXTRA_FIELD_ALL)
+ continue;
+ }
+ }
+
+ i++;
+ if (i > id_idx)
+ break;
+ }
+ prev = ef;
}
return head;
@@ -104,10 +104,10 @@ _zip_ef_free(zip_extra_field_t *ef) {
zip_extra_field_t *ef2;
while (ef) {
- ef2 = ef->next;
- free(ef->data);
- free(ef);
- ef = ef2;
+ ef2 = ef->next;
+ free(ef->data);
+ free(ef);
+ ef = ef2;
}
}
@@ -120,19 +120,19 @@ _zip_ef_get_by_id(const zip_extra_field_t *ef, zip_uint16_t *lenp, zip_uint16_t
i = 0;
for (; ef; ef = ef->next) {
- if (ef->id == id && (ef->flags & flags & ZIP_EF_BOTH)) {
- if (i < id_idx) {
- i++;
- continue;
- }
-
- if (lenp)
- *lenp = ef->size;
- if (ef->size > 0)
- return ef->data;
- else
- return empty;
- }
+ if (ef->id == id && (ef->flags & flags & ZIP_EF_BOTH)) {
+ if (i < id_idx) {
+ i++;
+ continue;
+ }
+
+ if (lenp)
+ *lenp = ef->size;
+ if (ef->size > 0)
+ return ef->data;
+ else
+ return empty;
+ }
}
zip_error_set(error, ZIP_ER_NOENT, 0);
@@ -146,28 +146,28 @@ _zip_ef_merge(zip_extra_field_t *to, zip_extra_field_t *from) {
int duplicate;
if (to == NULL)
- return from;
+ return from;
for (tail = to; tail->next; tail = tail->next)
- ;
+ ;
for (; from; from = ef2) {
- ef2 = from->next;
-
- duplicate = 0;
- for (tt = to; tt; tt = tt->next) {
- if (tt->id == from->id && tt->size == from->size && (tt->size == 0 || memcmp(tt->data, from->data, tt->size) == 0)) {
- tt->flags |= (from->flags & ZIP_EF_BOTH);
- duplicate = 1;
- break;
- }
- }
-
- from->next = NULL;
- if (duplicate)
- _zip_ef_free(from);
- else
- tail = tail->next = from;
+ ef2 = from->next;
+
+ duplicate = 0;
+ for (tt = to; tt; tt = tt->next) {
+ if (tt->id == from->id && tt->size == from->size && (tt->size == 0 || memcmp(tt->data, from->data, tt->size) == 0)) {
+ tt->flags |= (from->flags & ZIP_EF_BOTH);
+ duplicate = 1;
+ break;
+ }
+ }
+
+ from->next = NULL;
+ if (duplicate)
+ _zip_ef_free(from);
+ else
+ tail = tail->next = from;
}
return to;
@@ -179,20 +179,20 @@ _zip_ef_new(zip_uint16_t id, zip_uint16_t size, const zip_uint8_t *data, zip_fla
zip_extra_field_t *ef;
if ((ef = (zip_extra_field_t *)malloc(sizeof(*ef))) == NULL)
- return NULL;
+ return NULL;
ef->next = NULL;
ef->flags = flags;
ef->id = id;
ef->size = size;
if (size > 0) {
- if ((ef->data = (zip_uint8_t *)_zip_memdup(data, size, NULL)) == NULL) {
- free(ef);
- return NULL;
- }
+ if ((ef->data = (zip_uint8_t *)_zip_memdup(data, size, NULL)) == NULL) {
+ free(ef);
+ return NULL;
+ }
}
else
- ef->data = NULL;
+ ef->data = NULL;
return ef;
}
@@ -204,63 +204,63 @@ _zip_ef_parse(const zip_uint8_t *data, zip_uint16_t len, zip_flags_t flags, zip_
zip_extra_field_t *ef, *ef2, *ef_head;
if ((buffer = _zip_buffer_new((zip_uint8_t *)data, len)) == NULL) {
- zip_error_set(error, ZIP_ER_MEMORY, 0);
- return false;
+ zip_error_set(error, ZIP_ER_MEMORY, 0);
+ return false;
}
ef_head = ef = NULL;
while (_zip_buffer_ok(buffer) && _zip_buffer_left(buffer) >= 4) {
- zip_uint16_t fid, flen;
- zip_uint8_t *ef_data;
-
- fid = _zip_buffer_get_16(buffer);
- flen = _zip_buffer_get_16(buffer);
- ef_data = _zip_buffer_get(buffer, flen);
-
- if (ef_data == NULL) {
- zip_error_set(error, ZIP_ER_INCONS, 0);
- _zip_buffer_free(buffer);
- _zip_ef_free(ef_head);
- return false;
- }
-
- if ((ef2 = _zip_ef_new(fid, flen, ef_data, flags)) == NULL) {
- zip_error_set(error, ZIP_ER_MEMORY, 0);
- _zip_buffer_free(buffer);
- _zip_ef_free(ef_head);
- return false;
- }
-
- if (ef_head) {
- ef->next = ef2;
- ef = ef2;
- }
- else
- ef_head = ef = ef2;
+ zip_uint16_t fid, flen;
+ zip_uint8_t *ef_data;
+
+ fid = _zip_buffer_get_16(buffer);
+ flen = _zip_buffer_get_16(buffer);
+ ef_data = _zip_buffer_get(buffer, flen);
+
+ if (ef_data == NULL) {
+ zip_error_set(error, ZIP_ER_INCONS, ZIP_ER_DETAIL_INVALID_EF_LENGTH);
+ _zip_buffer_free(buffer);
+ _zip_ef_free(ef_head);
+ return false;
+ }
+
+ if ((ef2 = _zip_ef_new(fid, flen, ef_data, flags)) == NULL) {
+ zip_error_set(error, ZIP_ER_MEMORY, 0);
+ _zip_buffer_free(buffer);
+ _zip_ef_free(ef_head);
+ return false;
+ }
+
+ if (ef_head) {
+ ef->next = ef2;
+ ef = ef2;
+ }
+ else
+ ef_head = ef = ef2;
}
if (!_zip_buffer_eof(buffer)) {
- /* Android APK files align stored file data with padding in extra fields; ignore. */
- /* see https://android.googlesource.com/platform/build/+/master/tools/zipalign/ZipAlign.cpp */
- size_t glen = _zip_buffer_left(buffer);
- zip_uint8_t *garbage;
- garbage = _zip_buffer_get(buffer, glen);
- if (glen >= 4 || garbage == NULL || memcmp(garbage, "\0\0\0", glen) != 0) {
- zip_error_set(error, ZIP_ER_INCONS, 0);
- _zip_buffer_free(buffer);
- _zip_ef_free(ef_head);
- return false;
- }
+ /* Android APK files align stored file data with padding in extra fields; ignore. */
+ /* see https://android.googlesource.com/platform/build/+/master/tools/zipalign/ZipAlign.cpp */
+ size_t glen = _zip_buffer_left(buffer);
+ zip_uint8_t *garbage;
+ garbage = _zip_buffer_get(buffer, glen);
+ if (glen >= 4 || garbage == NULL || memcmp(garbage, "\0\0\0", glen) != 0) {
+ zip_error_set(error, ZIP_ER_INCONS, ZIP_ER_DETAIL_EF_TRAILING_GARBAGE);
+ _zip_buffer_free(buffer);
+ _zip_ef_free(ef_head);
+ return false;
+ }
}
_zip_buffer_free(buffer);
if (ef_head_p) {
- *ef_head_p = ef_head;
+ *ef_head_p = ef_head;
}
else {
- _zip_ef_free(ef_head);
+ _zip_ef_free(ef_head);
}
return true;
@@ -276,20 +276,20 @@ _zip_ef_remove_internal(zip_extra_field_t *ef) {
prev = NULL;
while (ef) {
- if (ZIP_EF_IS_INTERNAL(ef->id)) {
- next = ef->next;
- if (ef_head == ef)
- ef_head = next;
- ef->next = NULL;
- _zip_ef_free(ef);
- if (prev)
- prev->next = next;
- ef = next;
- }
- else {
- prev = ef;
- ef = ef->next;
- }
+ if (ZIP_EF_IS_INTERNAL(ef->id)) {
+ next = ef->next;
+ if (ef_head == ef)
+ ef_head = next;
+ ef->next = NULL;
+ _zip_ef_free(ef);
+ if (prev)
+ prev->next = next;
+ ef = next;
+ }
+ else {
+ prev = ef;
+ ef = ef->next;
+ }
}
return ef_head;
@@ -302,8 +302,8 @@ _zip_ef_size(const zip_extra_field_t *ef, zip_flags_t flags) {
size = 0;
for (; ef; ef = ef->next) {
- if (ef->flags & flags & ZIP_EF_BOTH)
- size = (zip_uint16_t)(size + 4 + ef->size);
+ if (ef->flags & flags & ZIP_EF_BOTH)
+ size = (zip_uint16_t)(size + 4 + ef->size);
}
return size;
@@ -316,30 +316,30 @@ _zip_ef_write(zip_t *za, const zip_extra_field_t *ef, zip_flags_t flags) {
zip_buffer_t *buffer = _zip_buffer_new(b, sizeof(b));
if (buffer == NULL) {
- return -1;
+ return -1;
}
for (; ef; ef = ef->next) {
- if (ef->flags & flags & ZIP_EF_BOTH) {
- _zip_buffer_set_offset(buffer, 0);
- _zip_buffer_put_16(buffer, ef->id);
- _zip_buffer_put_16(buffer, ef->size);
- if (!_zip_buffer_ok(buffer)) {
- zip_error_set(&za->error, ZIP_ER_INTERNAL, 0);
- _zip_buffer_free(buffer);
- return -1;
- }
- if (_zip_write(za, b, 4) < 0) {
- _zip_buffer_free(buffer);
- return -1;
- }
- if (ef->size > 0) {
- if (_zip_write(za, ef->data, ef->size) < 0) {
- _zip_buffer_free(buffer);
- return -1;
- }
- }
- }
+ if (ef->flags & flags & ZIP_EF_BOTH) {
+ _zip_buffer_set_offset(buffer, 0);
+ _zip_buffer_put_16(buffer, ef->id);
+ _zip_buffer_put_16(buffer, ef->size);
+ if (!_zip_buffer_ok(buffer)) {
+ zip_error_set(&za->error, ZIP_ER_INTERNAL, 0);
+ _zip_buffer_free(buffer);
+ return -1;
+ }
+ if (_zip_write(za, b, 4) < 0) {
+ _zip_buffer_free(buffer);
+ return -1;
+ }
+ if (ef->size > 0) {
+ if (_zip_write(za, ef->data, ef->size) < 0) {
+ _zip_buffer_free(buffer);
+ return -1;
+ }
+ }
+ }
}
_zip_buffer_free(buffer);
@@ -355,71 +355,71 @@ _zip_read_local_ef(zip_t *za, zip_uint64_t idx) {
zip_uint16_t fname_len, ef_len;
if (idx >= za->nentry) {
- zip_error_set(&za->error, ZIP_ER_INVAL, 0);
- return -1;
+ zip_error_set(&za->error, ZIP_ER_INVAL, 0);
+ return -1;
}
e = za->entry + idx;
if (e->orig == NULL || e->orig->local_extra_fields_read)
- return 0;
+ return 0;
if (e->orig->offset + 26 > ZIP_INT64_MAX) {
- zip_error_set(&za->error, ZIP_ER_SEEK, EFBIG);
- return -1;
+ zip_error_set(&za->error, ZIP_ER_SEEK, EFBIG);
+ return -1;
}
if (zip_source_seek(za->src, (zip_int64_t)(e->orig->offset + 26), SEEK_SET) < 0) {
- _zip_error_set_from_source(&za->error, za->src);
- return -1;
+ _zip_error_set_from_source(&za->error, za->src);
+ return -1;
}
if ((buffer = _zip_buffer_new_from_source(za->src, sizeof(b), b, &za->error)) == NULL) {
- return -1;
+ return -1;
}
fname_len = _zip_buffer_get_16(buffer);
ef_len = _zip_buffer_get_16(buffer);
if (!_zip_buffer_eof(buffer)) {
- _zip_buffer_free(buffer);
- zip_error_set(&za->error, ZIP_ER_INTERNAL, 0);
- return -1;
+ _zip_buffer_free(buffer);
+ zip_error_set(&za->error, ZIP_ER_INTERNAL, 0);
+ return -1;
}
_zip_buffer_free(buffer);
if (ef_len > 0) {
- zip_extra_field_t *ef;
- zip_uint8_t *ef_raw;
+ zip_extra_field_t *ef;
+ zip_uint8_t *ef_raw;
- if (zip_source_seek(za->src, fname_len, SEEK_CUR) < 0) {
- zip_error_set(&za->error, ZIP_ER_SEEK, errno);
- return -1;
- }
+ if (zip_source_seek(za->src, fname_len, SEEK_CUR) < 0) {
+ zip_error_set(&za->error, ZIP_ER_SEEK, errno);
+ return -1;
+ }
- ef_raw = _zip_read_data(NULL, za->src, ef_len, 0, &za->error);
+ ef_raw = _zip_read_data(NULL, za->src, ef_len, 0, &za->error);
- if (ef_raw == NULL)
- return -1;
+ if (ef_raw == NULL)
+ return -1;
- if (!_zip_ef_parse(ef_raw, ef_len, ZIP_EF_LOCAL, &ef, &za->error)) {
- free(ef_raw);
- return -1;
- }
- free(ef_raw);
+ if (!_zip_ef_parse(ef_raw, ef_len, ZIP_EF_LOCAL, &ef, &za->error)) {
+ free(ef_raw);
+ return -1;
+ }
+ free(ef_raw);
- if (ef) {
- ef = _zip_ef_remove_internal(ef);
- e->orig->extra_fields = _zip_ef_merge(e->orig->extra_fields, ef);
- }
+ if (ef) {
+ ef = _zip_ef_remove_internal(ef);
+ e->orig->extra_fields = _zip_ef_merge(e->orig->extra_fields, ef);
+ }
}
e->orig->local_extra_fields_read = 1;
if (e->changes && e->changes->local_extra_fields_read == 0) {
- e->changes->extra_fields = e->orig->extra_fields;
- e->changes->local_extra_fields_read = 1;
+ e->changes->extra_fields = e->orig->extra_fields;
+ e->changes->local_extra_fields_read = 1;
}
return 0;