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Diffstat (limited to 'src/libs/3rdparty/libarchive/archive_read_support_filter_uu.c')
-rw-r--r--src/libs/3rdparty/libarchive/archive_read_support_filter_uu.c683
1 files changed, 683 insertions, 0 deletions
diff --git a/src/libs/3rdparty/libarchive/archive_read_support_filter_uu.c b/src/libs/3rdparty/libarchive/archive_read_support_filter_uu.c
new file mode 100644
index 000000000..209b2a159
--- /dev/null
+++ b/src/libs/3rdparty/libarchive/archive_read_support_filter_uu.c
@@ -0,0 +1,683 @@
+/*-
+ * Copyright (c) 2009-2011 Michihiro NAKAJIMA
+ * All rights reserved.
+ *
+ * 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.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``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(S) 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 "archive_platform.h"
+__FBSDID("$FreeBSD$");
+
+#ifdef HAVE_ERRNO_H
+#include <errno.h>
+#endif
+#ifdef HAVE_STDLIB_H
+#include <stdlib.h>
+#endif
+#ifdef HAVE_STRING_H
+#include <string.h>
+#endif
+
+#include "archive.h"
+#include "archive_private.h"
+#include "archive_read_private.h"
+
+/* Maximum lookahead during bid phase */
+#define UUENCODE_BID_MAX_READ 128*1024 /* in bytes */
+
+struct uudecode {
+ int64_t total;
+ unsigned char *in_buff;
+#define IN_BUFF_SIZE (1024)
+ int in_cnt;
+ size_t in_allocated;
+ unsigned char *out_buff;
+#define OUT_BUFF_SIZE (64 * 1024)
+ int state;
+#define ST_FIND_HEAD 0
+#define ST_READ_UU 1
+#define ST_UUEND 2
+#define ST_READ_BASE64 3
+#define ST_IGNORE 4
+};
+
+static int uudecode_bidder_bid(struct archive_read_filter_bidder *,
+ struct archive_read_filter *filter);
+static int uudecode_bidder_init(struct archive_read_filter *);
+
+static ssize_t uudecode_filter_read(struct archive_read_filter *,
+ const void **);
+static int uudecode_filter_close(struct archive_read_filter *);
+
+#if ARCHIVE_VERSION_NUMBER < 4000000
+/* Deprecated; remove in libarchive 4.0 */
+int
+archive_read_support_compression_uu(struct archive *a)
+{
+ return archive_read_support_filter_uu(a);
+}
+#endif
+
+static const struct archive_read_filter_bidder_vtable
+uudecode_bidder_vtable = {
+ .bid = uudecode_bidder_bid,
+ .init = uudecode_bidder_init,
+};
+
+int
+archive_read_support_filter_uu(struct archive *_a)
+{
+ struct archive_read *a = (struct archive_read *)_a;
+
+ return __archive_read_register_bidder(a, NULL, "uu",
+ &uudecode_bidder_vtable);
+}
+
+static const unsigned char ascii[256] = {
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, '\n', 0, 0, '\r', 0, 0, /* 00 - 0F */
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 10 - 1F */
+ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, /* 20 - 2F */
+ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, /* 30 - 3F */
+ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, /* 40 - 4F */
+ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, /* 50 - 5F */
+ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, /* 60 - 6F */
+ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, /* 70 - 7F */
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 80 - 8F */
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 90 - 9F */
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* A0 - AF */
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* B0 - BF */
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* C0 - CF */
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* D0 - DF */
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* E0 - EF */
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* F0 - FF */
+};
+
+static const unsigned char uuchar[256] = {
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 00 - 0F */
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 10 - 1F */
+ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, /* 20 - 2F */
+ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, /* 30 - 3F */
+ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, /* 40 - 4F */
+ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, /* 50 - 5F */
+ 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 60 - 6F */
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 70 - 7F */
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 80 - 8F */
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 90 - 9F */
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* A0 - AF */
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* B0 - BF */
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* C0 - CF */
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* D0 - DF */
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* E0 - EF */
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* F0 - FF */
+};
+
+static const unsigned char base64[256] = {
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 00 - 0F */
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 10 - 1F */
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 1, /* 20 - 2F */
+ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 1, 0, 0, /* 30 - 3F */
+ 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, /* 40 - 4F */
+ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, /* 50 - 5F */
+ 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, /* 60 - 6F */
+ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, /* 70 - 7F */
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 80 - 8F */
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 90 - 9F */
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* A0 - AF */
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* B0 - BF */
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* C0 - CF */
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* D0 - DF */
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* E0 - EF */
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* F0 - FF */
+};
+
+static const int base64num[128] = {
+ 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0, /* 00 - 0F */
+ 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0, /* 10 - 1F */
+ 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 62, 0, 0, 0, 63, /* 20 - 2F */
+ 52, 53, 54, 55, 56, 57, 58, 59,
+ 60, 61, 0, 0, 0, 0, 0, 0, /* 30 - 3F */
+ 0, 0, 1, 2, 3, 4, 5, 6,
+ 7, 8, 9, 10, 11, 12, 13, 14, /* 40 - 4F */
+ 15, 16, 17, 18, 19, 20, 21, 22,
+ 23, 24, 25, 0, 0, 0, 0, 0, /* 50 - 5F */
+ 0, 26, 27, 28, 29, 30, 31, 32,
+ 33, 34, 35, 36, 37, 38, 39, 40, /* 60 - 6F */
+ 41, 42, 43, 44, 45, 46, 47, 48,
+ 49, 50, 51, 0, 0, 0, 0, 0, /* 70 - 7F */
+};
+
+static ssize_t
+get_line(const unsigned char *b, ssize_t avail, ssize_t *nlsize)
+{
+ ssize_t len;
+
+ len = 0;
+ while (len < avail) {
+ switch (ascii[*b]) {
+ case 0: /* Non-ascii character or control character. */
+ if (nlsize != NULL)
+ *nlsize = 0;
+ return (-1);
+ case '\r':
+ if (avail-len > 1 && b[1] == '\n') {
+ if (nlsize != NULL)
+ *nlsize = 2;
+ return (len+2);
+ }
+ /* FALL THROUGH */
+ case '\n':
+ if (nlsize != NULL)
+ *nlsize = 1;
+ return (len+1);
+ case 1:
+ b++;
+ len++;
+ break;
+ }
+ }
+ if (nlsize != NULL)
+ *nlsize = 0;
+ return (avail);
+}
+
+static ssize_t
+bid_get_line(struct archive_read_filter *filter,
+ const unsigned char **b, ssize_t *avail, ssize_t *ravail,
+ ssize_t *nl, size_t* nbytes_read)
+{
+ ssize_t len;
+ int quit;
+
+ quit = 0;
+ if (*avail == 0) {
+ *nl = 0;
+ len = 0;
+ } else
+ len = get_line(*b, *avail, nl);
+
+ /*
+ * Read bytes more while it does not reach the end of line.
+ */
+ while (*nl == 0 && len == *avail && !quit &&
+ *nbytes_read < UUENCODE_BID_MAX_READ) {
+ ssize_t diff = *ravail - *avail;
+ size_t nbytes_req = (*ravail+1023) & ~1023U;
+ ssize_t tested;
+
+ /* Increase reading bytes if it is not enough to at least
+ * new two lines. */
+ if (nbytes_req < (size_t)*ravail + 160)
+ nbytes_req <<= 1;
+
+ *b = __archive_read_filter_ahead(filter, nbytes_req, avail);
+ if (*b == NULL) {
+ if (*ravail >= *avail)
+ return (0);
+ /* Reading bytes reaches the end of a stream. */
+ *b = __archive_read_filter_ahead(filter, *avail, avail);
+ quit = 1;
+ }
+ *nbytes_read = *avail;
+ *ravail = *avail;
+ *b += diff;
+ *avail -= diff;
+ tested = len;/* Skip some bytes we already determined. */
+ len = get_line(*b + tested, *avail - tested, nl);
+ if (len >= 0)
+ len += tested;
+ }
+ return (len);
+}
+
+#define UUDECODE(c) (((c) - 0x20) & 0x3f)
+
+static int
+uudecode_bidder_bid(struct archive_read_filter_bidder *self,
+ struct archive_read_filter *filter)
+{
+ const unsigned char *b;
+ ssize_t avail, ravail;
+ ssize_t len, nl;
+ int l;
+ int firstline;
+ size_t nbytes_read;
+
+ (void)self; /* UNUSED */
+
+ b = __archive_read_filter_ahead(filter, 1, &avail);
+ if (b == NULL)
+ return (0);
+
+ firstline = 20;
+ ravail = avail;
+ nbytes_read = avail;
+ for (;;) {
+ len = bid_get_line(filter, &b, &avail, &ravail, &nl, &nbytes_read);
+ if (len < 0 || nl == 0)
+ return (0); /* No match found. */
+ if (len - nl >= 11 && memcmp(b, "begin ", 6) == 0)
+ l = 6;
+ else if (len -nl >= 18 && memcmp(b, "begin-base64 ", 13) == 0)
+ l = 13;
+ else
+ l = 0;
+
+ if (l > 0 && (b[l] < '0' || b[l] > '7' ||
+ b[l+1] < '0' || b[l+1] > '7' ||
+ b[l+2] < '0' || b[l+2] > '7' || b[l+3] != ' '))
+ l = 0;
+
+ b += len;
+ avail -= len;
+ if (l)
+ break;
+ firstline = 0;
+
+ /* Do not read more than UUENCODE_BID_MAX_READ bytes */
+ if (nbytes_read >= UUENCODE_BID_MAX_READ)
+ return (0);
+ }
+ if (!avail)
+ return (0);
+ len = bid_get_line(filter, &b, &avail, &ravail, &nl, &nbytes_read);
+ if (len < 0 || nl == 0)
+ return (0);/* There are non-ascii characters. */
+ avail -= len;
+
+ if (l == 6) {
+ /* "begin " */
+ if (!uuchar[*b])
+ return (0);
+ /* Get a length of decoded bytes. */
+ l = UUDECODE(*b++); len--;
+ if (l > 45)
+ /* Normally, maximum length is 45(character 'M'). */
+ return (0);
+ if (l > len - nl)
+ return (0); /* Line too short. */
+ while (l) {
+ if (!uuchar[*b++])
+ return (0);
+ --len;
+ --l;
+ }
+ if (len-nl == 1 &&
+ (uuchar[*b] || /* Check sum. */
+ (*b >= 'a' && *b <= 'z'))) {/* Padding data(MINIX). */
+ ++b;
+ --len;
+ }
+ b += nl;
+ if (avail && uuchar[*b])
+ return (firstline+30);
+ } else if (l == 13) {
+ /* "begin-base64 " */
+ while (len-nl > 0) {
+ if (!base64[*b++])
+ return (0);
+ --len;
+ }
+ b += nl;
+
+ if (avail >= 5 && memcmp(b, "====\n", 5) == 0)
+ return (firstline+40);
+ if (avail >= 6 && memcmp(b, "====\r\n", 6) == 0)
+ return (firstline+40);
+ if (avail > 0 && base64[*b])
+ return (firstline+30);
+ }
+
+ return (0);
+}
+
+static const struct archive_read_filter_vtable
+uudecode_reader_vtable = {
+ .read = uudecode_filter_read,
+ .close = uudecode_filter_close,
+};
+
+static int
+uudecode_bidder_init(struct archive_read_filter *self)
+{
+ struct uudecode *uudecode;
+ void *out_buff;
+ void *in_buff;
+
+ self->code = ARCHIVE_FILTER_UU;
+ self->name = "uu";
+
+ uudecode = (struct uudecode *)calloc(sizeof(*uudecode), 1);
+ out_buff = malloc(OUT_BUFF_SIZE);
+ in_buff = malloc(IN_BUFF_SIZE);
+ if (uudecode == NULL || out_buff == NULL || in_buff == NULL) {
+ archive_set_error(&self->archive->archive, ENOMEM,
+ "Can't allocate data for uudecode");
+ free(uudecode);
+ free(out_buff);
+ free(in_buff);
+ return (ARCHIVE_FATAL);
+ }
+
+ self->data = uudecode;
+ uudecode->in_buff = in_buff;
+ uudecode->in_cnt = 0;
+ uudecode->in_allocated = IN_BUFF_SIZE;
+ uudecode->out_buff = out_buff;
+ uudecode->state = ST_FIND_HEAD;
+ self->vtable = &uudecode_reader_vtable;
+
+ return (ARCHIVE_OK);
+}
+
+static int
+ensure_in_buff_size(struct archive_read_filter *self,
+ struct uudecode *uudecode, size_t size)
+{
+
+ if (size > uudecode->in_allocated) {
+ unsigned char *ptr;
+ size_t newsize;
+
+ /*
+ * Calculate a new buffer size for in_buff.
+ * Increase its value until it has enough size we need.
+ */
+ newsize = uudecode->in_allocated;
+ do {
+ if (newsize < IN_BUFF_SIZE*32)
+ newsize <<= 1;
+ else
+ newsize += IN_BUFF_SIZE;
+ } while (size > newsize);
+ /* Allocate the new buffer. */
+ ptr = malloc(newsize);
+ if (ptr == NULL) {
+ free(ptr);
+ archive_set_error(&self->archive->archive,
+ ENOMEM,
+ "Can't allocate data for uudecode");
+ return (ARCHIVE_FATAL);
+ }
+ /* Move the remaining data in in_buff into the new buffer. */
+ if (uudecode->in_cnt)
+ memmove(ptr, uudecode->in_buff, uudecode->in_cnt);
+ /* Replace in_buff with the new buffer. */
+ free(uudecode->in_buff);
+ uudecode->in_buff = ptr;
+ uudecode->in_allocated = newsize;
+ }
+ return (ARCHIVE_OK);
+}
+
+static ssize_t
+uudecode_filter_read(struct archive_read_filter *self, const void **buff)
+{
+ struct uudecode *uudecode;
+ const unsigned char *b, *d;
+ unsigned char *out;
+ ssize_t avail_in, ravail;
+ ssize_t used;
+ ssize_t total;
+ ssize_t len, llen, nl;
+
+ uudecode = (struct uudecode *)self->data;
+
+read_more:
+ d = __archive_read_filter_ahead(self->upstream, 1, &avail_in);
+ if (d == NULL && avail_in < 0)
+ return (ARCHIVE_FATAL);
+ /* Quiet a code analyzer; make sure avail_in must be zero
+ * when d is NULL. */
+ if (d == NULL)
+ avail_in = 0;
+ used = 0;
+ total = 0;
+ out = uudecode->out_buff;
+ ravail = avail_in;
+ if (uudecode->state == ST_IGNORE) {
+ used = avail_in;
+ goto finish;
+ }
+ if (uudecode->in_cnt) {
+ /*
+ * If there is remaining data which is saved by
+ * previous calling, use it first.
+ */
+ if (ensure_in_buff_size(self, uudecode,
+ avail_in + uudecode->in_cnt) != ARCHIVE_OK)
+ return (ARCHIVE_FATAL);
+ memcpy(uudecode->in_buff + uudecode->in_cnt,
+ d, avail_in);
+ d = uudecode->in_buff;
+ avail_in += uudecode->in_cnt;
+ uudecode->in_cnt = 0;
+ }
+ for (;used < avail_in; d += llen, used += llen) {
+ int64_t l, body;
+
+ b = d;
+ len = get_line(b, avail_in - used, &nl);
+ if (len < 0) {
+ /* Non-ascii character is found. */
+ if (uudecode->state == ST_FIND_HEAD &&
+ (uudecode->total > 0 || total > 0)) {
+ uudecode->state = ST_IGNORE;
+ used = avail_in;
+ goto finish;
+ }
+ archive_set_error(&self->archive->archive,
+ ARCHIVE_ERRNO_MISC,
+ "Insufficient compressed data");
+ return (ARCHIVE_FATAL);
+ }
+ llen = len;
+ if ((nl == 0) && (uudecode->state != ST_UUEND)) {
+ if (total == 0 && ravail <= 0) {
+ /* There is nothing more to read, fail */
+ archive_set_error(&self->archive->archive,
+ ARCHIVE_ERRNO_FILE_FORMAT,
+ "Missing format data");
+ return (ARCHIVE_FATAL);
+ }
+ /*
+ * Save remaining data which does not contain
+ * NL('\n','\r').
+ */
+ if (ensure_in_buff_size(self, uudecode, len)
+ != ARCHIVE_OK)
+ return (ARCHIVE_FATAL);
+ if (uudecode->in_buff != b)
+ memmove(uudecode->in_buff, b, len);
+ uudecode->in_cnt = (int)len;
+ if (total == 0) {
+ /* Do not return 0; it means end-of-file.
+ * We should try to read bytes more. */
+ __archive_read_filter_consume(
+ self->upstream, ravail);
+ goto read_more;
+ }
+ used += len;
+ break;
+ }
+ switch (uudecode->state) {
+ default:
+ case ST_FIND_HEAD:
+ /* Do not read more than UUENCODE_BID_MAX_READ bytes */
+ if (total + len >= UUENCODE_BID_MAX_READ) {
+ archive_set_error(&self->archive->archive,
+ ARCHIVE_ERRNO_FILE_FORMAT,
+ "Invalid format data");
+ return (ARCHIVE_FATAL);
+ }
+ if (len - nl >= 11 && memcmp(b, "begin ", 6) == 0)
+ l = 6;
+ else if (len - nl >= 18 &&
+ memcmp(b, "begin-base64 ", 13) == 0)
+ l = 13;
+ else
+ l = 0;
+ if (l != 0 && b[l] >= '0' && b[l] <= '7' &&
+ b[l+1] >= '0' && b[l+1] <= '7' &&
+ b[l+2] >= '0' && b[l+2] <= '7' && b[l+3] == ' ') {
+ if (l == 6)
+ uudecode->state = ST_READ_UU;
+ else
+ uudecode->state = ST_READ_BASE64;
+ }
+ break;
+ case ST_READ_UU:
+ if (total + len * 2 > OUT_BUFF_SIZE)
+ goto finish;
+ body = len - nl;
+ if (!uuchar[*b] || body <= 0) {
+ archive_set_error(&self->archive->archive,
+ ARCHIVE_ERRNO_MISC,
+ "Insufficient compressed data");
+ return (ARCHIVE_FATAL);
+ }
+ /* Get length of undecoded bytes of current line. */
+ l = UUDECODE(*b++);
+ body--;
+ if (l > body) {
+ archive_set_error(&self->archive->archive,
+ ARCHIVE_ERRNO_MISC,
+ "Insufficient compressed data");
+ return (ARCHIVE_FATAL);
+ }
+ if (l == 0) {
+ uudecode->state = ST_UUEND;
+ break;
+ }
+ while (l > 0) {
+ int n = 0;
+
+ if (!uuchar[b[0]] || !uuchar[b[1]])
+ break;
+ n = UUDECODE(*b++) << 18;
+ n |= UUDECODE(*b++) << 12;
+ *out++ = n >> 16; total++;
+ --l;
+
+ if (l > 0) {
+ if (!uuchar[b[0]])
+ break;
+ n |= UUDECODE(*b++) << 6;
+ *out++ = (n >> 8) & 0xFF; total++;
+ --l;
+ }
+ if (l > 0) {
+ if (!uuchar[b[0]])
+ break;
+ n |= UUDECODE(*b++);
+ *out++ = n & 0xFF; total++;
+ --l;
+ }
+ }
+ if (l) {
+ archive_set_error(&self->archive->archive,
+ ARCHIVE_ERRNO_MISC,
+ "Insufficient compressed data");
+ return (ARCHIVE_FATAL);
+ }
+ break;
+ case ST_UUEND:
+ if (len - nl == 3 && memcmp(b, "end ", 3) == 0)
+ uudecode->state = ST_FIND_HEAD;
+ else {
+ archive_set_error(&self->archive->archive,
+ ARCHIVE_ERRNO_MISC,
+ "Insufficient compressed data");
+ return (ARCHIVE_FATAL);
+ }
+ break;
+ case ST_READ_BASE64:
+ if (total + len * 2 > OUT_BUFF_SIZE)
+ goto finish;
+ l = len - nl;
+ if (l >= 3 && b[0] == '=' && b[1] == '=' &&
+ b[2] == '=') {
+ uudecode->state = ST_FIND_HEAD;
+ break;
+ }
+ while (l > 0) {
+ int n = 0;
+
+ if (!base64[b[0]] || !base64[b[1]])
+ break;
+ n = base64num[*b++] << 18;
+ n |= base64num[*b++] << 12;
+ *out++ = n >> 16; total++;
+ l -= 2;
+
+ if (l > 0) {
+ if (*b == '=')
+ break;
+ if (!base64[*b])
+ break;
+ n |= base64num[*b++] << 6;
+ *out++ = (n >> 8) & 0xFF; total++;
+ --l;
+ }
+ if (l > 0) {
+ if (*b == '=')
+ break;
+ if (!base64[*b])
+ break;
+ n |= base64num[*b++];
+ *out++ = n & 0xFF; total++;
+ --l;
+ }
+ }
+ if (l && *b != '=') {
+ archive_set_error(&self->archive->archive,
+ ARCHIVE_ERRNO_MISC,
+ "Insufficient compressed data");
+ return (ARCHIVE_FATAL);
+ }
+ break;
+ }
+ }
+finish:
+ if (ravail < avail_in)
+ used -= avail_in - ravail;
+ __archive_read_filter_consume(self->upstream, used);
+
+ *buff = uudecode->out_buff;
+ uudecode->total += total;
+ return (total);
+}
+
+static int
+uudecode_filter_close(struct archive_read_filter *self)
+{
+ struct uudecode *uudecode;
+
+ uudecode = (struct uudecode *)self->data;
+ free(uudecode->in_buff);
+ free(uudecode->out_buff);
+ free(uudecode);
+
+ return (ARCHIVE_OK);
+}
+
generated by cgit v1.2.3 (git 2.25.1) at 2024-04-24 22:52:46 +0000