import sane-backends-1.0.27-22.el8
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adf925ca73
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225
SOURCES/0001-epson2-Rewrite-network-I-O.patch
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225
SOURCES/0001-epson2-Rewrite-network-I-O.patch
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diff -up sane-backends-1.0.27/backend/epson2_net.c.epsonds-issues sane-backends-1.0.27/backend/epson2_net.c
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--- sane-backends-1.0.27/backend/epson2_net.c.epsonds-issues 2016-10-06 02:02:57.000000000 +0200
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+++ sane-backends-1.0.27/backend/epson2_net.c 2020-07-28 15:04:58.385405722 +0200
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@@ -32,11 +32,12 @@
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#include "sane/sanei_debug.h"
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-static int
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+static ssize_t
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sanei_epson_net_read_raw(Epson_Scanner *s, unsigned char *buf, ssize_t wanted,
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SANE_Status *status)
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{
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- int ready, read = -1;
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+ int ready;
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+ ssize_t read = -1;
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fd_set readable;
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struct timeval tv;
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@@ -62,111 +63,136 @@ sanei_epson_net_read_raw(Epson_Scanner *
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return read;
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}
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-int
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-sanei_epson_net_read(Epson_Scanner *s, unsigned char *buf, ssize_t wanted,
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+static ssize_t
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+sanei_epson_net_read_buf(Epson_Scanner *s, unsigned char *buf, ssize_t wanted,
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SANE_Status * status)
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{
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- ssize_t size;
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ssize_t read = 0;
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- unsigned char header[12];
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- /* read from buffer, if available */
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- if (s->netptr != s->netbuf) {
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- DBG(23, "reading %lu from buffer at %p, %lu available\n",
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- (u_long) wanted, s->netptr, (u_long) s->netlen);
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+ DBG(23, "%s: reading up to %lu from buffer at %p, %lu available\n",
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+ __func__, (u_long) wanted, s->netptr, (u_long) s->netlen);
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- memcpy(buf, s->netptr, wanted);
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- read = wanted;
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+ if ((size_t) wanted > s->netlen) {
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+ *status = SANE_STATUS_IO_ERROR;
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+ wanted = s->netlen;
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+ }
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- s->netlen -= wanted;
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+ memcpy(buf, s->netptr, wanted);
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+ read = wanted;
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- if (s->netlen == 0) {
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- DBG(23, "%s: freeing %p\n", __func__, s->netbuf);
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- free(s->netbuf);
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- s->netbuf = s->netptr = NULL;
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- s->netlen = 0;
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- }
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+ s->netptr += read;
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+ s->netlen -= read;
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- return read;
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+ if (s->netlen == 0) {
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+ DBG(23, "%s: freeing %p\n", __func__, s->netbuf);
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+ free(s->netbuf);
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+ s->netbuf = s->netptr = NULL;
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+ s->netlen = 0;
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+ }
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+
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+ return read;
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+}
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+
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+ssize_t
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+sanei_epson_net_read(Epson_Scanner *s, unsigned char *buf, ssize_t wanted,
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+ SANE_Status * status)
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+{
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+ if (wanted < 0) {
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+ *status = SANE_STATUS_INVAL;
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+ return 0;
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+ }
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+
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+ size_t size;
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+ ssize_t read = 0;
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+ unsigned char header[12];
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+
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+ /* read from remainder of buffer */
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+ if (s->netptr) {
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+ return sanei_epson_net_read_buf(s, buf, wanted, status);
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}
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/* receive net header */
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- size = sanei_epson_net_read_raw(s, header, 12, status);
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- if (size != 12) {
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+ read = sanei_epson_net_read_raw(s, header, 12, status);
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+ if (read != 12) {
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return 0;
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}
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+ /* validate header */
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if (header[0] != 'I' || header[1] != 'S') {
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DBG(1, "header mismatch: %02X %02x\n", header[0], header[1]);
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*status = SANE_STATUS_IO_ERROR;
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return 0;
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}
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+ /* parse payload size */
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size = be32atoh(&header[6]);
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- DBG(23, "%s: wanted = %lu, available = %lu\n", __func__,
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- (u_long) wanted, (u_long) size);
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-
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*status = SANE_STATUS_GOOD;
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- if (size == wanted) {
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-
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- DBG(15, "%s: full read\n", __func__);
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+ if (!s->netbuf) {
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+ DBG(15, "%s: direct read\n", __func__);
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+ DBG(23, "%s: wanted = %lu, available = %lu\n", __func__,
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+ (u_long) wanted, (u_long) size);
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- read = sanei_epson_net_read_raw(s, buf, size, status);
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-
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- if (s->netbuf) {
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- free(s->netbuf);
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- s->netbuf = NULL;
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- s->netlen = 0;
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+ if ((size_t) wanted > size) {
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+ wanted = size;
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}
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- if (read < 0) {
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- return 0;
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- }
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-
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-/* } else if (wanted < size && s->netlen == size) { */
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+ read = sanei_epson_net_read_raw(s, buf, wanted, status);
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} else {
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- DBG(23, "%s: partial read\n", __func__);
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+ DBG(15, "%s: buffered read\n", __func__);
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+ DBG(23, "%s: bufferable = %lu, available = %lu\n", __func__,
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+ (u_long) s->netlen, (u_long) size);
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- read = sanei_epson_net_read_raw(s, s->netbuf, size, status);
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- if (read != size) {
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- return 0;
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+ if (s->netlen > size) {
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+ s->netlen = size;
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}
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- s->netlen = size - wanted;
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- s->netptr += wanted;
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- read = wanted;
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-
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- DBG(23, "0,4 %02x %02x\n", s->netbuf[0], s->netbuf[4]);
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- DBG(23, "storing %lu to buffer at %p, next read at %p, %lu bytes left\n",
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- (u_long) size, s->netbuf, s->netptr, (u_long) s->netlen);
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+ /* fill buffer */
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+ read = sanei_epson_net_read_raw(s, s->netbuf, s->netlen, status);
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+ s->netptr = s->netbuf;
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+ s->netlen = (read > 0 ? read : 0);
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- memcpy(buf, s->netbuf, wanted);
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+ /* copy wanted part */
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+ read = sanei_epson_net_read_buf(s, buf, wanted, status);
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}
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return read;
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}
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-
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-int
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+size_t
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sanei_epson_net_write(Epson_Scanner *s, unsigned int cmd, const unsigned char *buf,
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size_t buf_size, size_t reply_len, SANE_Status *status)
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{
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unsigned char *h1, *h2, *payload;
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unsigned char *packet = malloc(12 + 8 + buf_size);
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- /* XXX check allocation failure */
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+ if (!packet) {
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+ *status = SANE_STATUS_NO_MEM;
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+ return 0;
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+ }
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h1 = packet;
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h2 = packet + 12;
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payload = packet + 12 + 8;
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if (reply_len) {
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- s->netbuf = s->netptr = malloc(reply_len);
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+ if (s->netbuf) {
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+ DBG(23, "%s, freeing %p, %ld bytes unprocessed\n",
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+ __func__, s->netbuf, (u_long) s->netlen);
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+ free(s->netbuf);
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+ s->netbuf = s->netptr = NULL;
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+ s->netlen = 0;
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+ }
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+ s->netbuf = malloc(reply_len);
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+ if (!s->netbuf) {
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+ free(packet);
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+ *status = SANE_STATUS_NO_MEM;
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+ return 0;
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+ }
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s->netlen = reply_len;
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- DBG(24, "allocated %lu bytes at %p\n",
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- (u_long) reply_len, s->netbuf);
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+ DBG(24, "%s: allocated %lu bytes at %p\n", __func__,
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+ (u_long) s->netlen, s->netbuf);
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}
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DBG(24, "%s: cmd = %04x, buf = %p, buf_size = %lu, reply_len = %lu\n",
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diff -up sane-backends-1.0.27/backend/epson2_net.h.epsonds-issues sane-backends-1.0.27/backend/epson2_net.h
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--- sane-backends-1.0.27/backend/epson2_net.h.epsonds-issues 2016-10-06 02:02:57.000000000 +0200
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+++ sane-backends-1.0.27/backend/epson2_net.h 2020-07-28 14:51:59.666593530 +0200
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@@ -4,9 +4,9 @@
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#include <sys/types.h>
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#include "../include/sane/sane.h"
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-extern int sanei_epson_net_read(struct Epson_Scanner *s, unsigned char *buf, ssize_t buf_size,
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+extern ssize_t sanei_epson_net_read(struct Epson_Scanner *s, unsigned char *buf, ssize_t buf_size,
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SANE_Status *status);
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-extern int sanei_epson_net_write(struct Epson_Scanner *s, unsigned int cmd, const unsigned char *buf,
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+extern size_t sanei_epson_net_write(struct Epson_Scanner *s, unsigned int cmd, const unsigned char *buf,
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size_t buf_size, size_t reply_len,
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SANE_Status *status);
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extern SANE_Status sanei_epson_net_lock(struct Epson_Scanner *s);
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Summary: Scanner access software
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Name: sane-backends
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Version: 1.0.27
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Release: 19%{?dist}.1
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Release: 22%{?dist}
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# lib/ is LGPLv2+, backends are GPLv2+ with exceptions
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# Tools are GPLv2+, docs are public domain
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# see LICENSE for details
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@ -61,6 +61,8 @@ Patch4: sane-backends-canon-lide-100.patch
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Patch5: sane-backends-revert-samsung-patch.patch
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# 1852468, 1852467, 1852466, 1852465 - prevent buffer overflow in esci2_img
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Patch6: 0001-epsonds-Prevent-possible-buffer-overflow-when-readin.patch
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# 1852663, 1848097 - NULL pointer dereference in sanei_epson_net_read function
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Patch7: 0001-epson2-Rewrite-network-I-O.patch
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URL: http://www.sane-project.org
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@ -201,6 +203,7 @@ access image acquisition devices available on the local host.
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%patch4 -p1 -b .canon-lide-100
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%patch5 -p1 -b .revert-samsung-patch
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%patch6 -p1 -b .prevent-buffer-overflow
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%patch7 -p1 -b .rework-epsonds-io
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%build
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CFLAGS="%optflags -fno-strict-aliasing"
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@ -370,7 +373,13 @@ exit 0
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%{_unitdir}/saned@.service
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%changelog
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* Wed Jul 01 2020 Zdenek Dohnal <zdohnal@redhat.com> - 1.0.27-19.1
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* Tue Sep 08 2020 Zdenek Dohnal <zdohnal@redhat.com> - 1.0.27-22
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- related 1852663 - needed to rebuild due infrastructure error
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* Thu Sep 03 2020 Zdenek Dohnal <zdohnal@redhat.com> - 1.0.27-21
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- 1852663, 1848097 - NULL pointer dereference in sanei_epson_net_read function
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* Wed Jul 01 2020 Zdenek Dohnal <zdohnal@redhat.com> - 1.0.27-20
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- 1852468, 1852467, 1852466, 1852465 - prevent buffer overflow in esci2_img
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- 1852668, 1852667, 1852666, 1852665 - disable autodiscovery for epsonds backend
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