Update upstream source from tag 'upstream/1.2.1'

Update to upstream version '1.2.1'
with Debian dir a9bb43f754a5c9a361b076af3635cc767b7e652e

8 files changed, 253 insertions, 86 deletions

diff --git a/backend/escl/escl.c b/backend/escl/escl.c
index 5f02ec8..cbbdb60 100644
--- a/backend/escl/escl.c
+++ b/backend/escl/escl.c
@@ -61,6 +61,26 @@ static const SANE_Device **devlist = NULL;
 static ESCL_Device *list_devices_primary = NULL;
 static int num_devices = 0;
 
+#ifdef CURL_SSLVERSION_MAX_DEFAULT
+static int proto_tls[] = {
+        CURL_SSLVERSION_MAX_DEFAULT,
+   #ifdef CURL_SSLVERSION_MAX_TLSv1_3
+        CURL_SSLVERSION_MAX_TLSv1_3,
+   #endif
+   #ifdef CURL_SSLVERSION_MAX_TLSv1_2
+        CURL_SSLVERSION_MAX_TLSv1_2,
+   #endif
+   #ifdef CURL_SSLVERSION_MAX_TLSv1_1
+        CURL_SSLVERSION_MAX_TLSv1_1,
+   #endif
+   #ifdef CURL_SSLVERSION_MAX_TLSv1_0
+        CURL_SSLVERSION_MAX_TLSv1_0,
+   #endif
+        -1
+};
+#endif
+
+
 typedef struct Handled {
     struct Handled *next;
     ESCL_Device *device;
@@ -99,6 +119,60 @@ escl_free_device(ESCL_Device *current)
     return NULL;
 }
 
+
+#ifdef CURL_SSLVERSION_MAX_DEFAULT
+static int
+escl_tls_protocol_supported(char *url, int proto)
+{
+   CURLcode res = CURLE_UNSUPPORTED_PROTOCOL;
+   CURL *curl = curl_easy_init();
+   if(curl) {
+      curl_easy_setopt(curl, CURLOPT_URL, url);
+
+      /* ask libcurl to use TLS version 1.0 or later */
+      curl_easy_setopt(curl, CURLOPT_SSLVERSION, proto);
+      curl_easy_setopt(curl, CURLOPT_SSL_VERIFYPEER, 0L);
+      curl_easy_setopt(curl, CURLOPT_SSL_VERIFYHOST, 0L);
+      curl_easy_setopt(curl, CURLOPT_FOLLOWLOCATION, 1L);
+      curl_easy_setopt(curl, CURLOPT_MAXREDIRS, 3L);
+      /* Perform the request */
+      res = curl_easy_perform(curl);
+      curl_easy_cleanup(curl);
+   }
+   return res;
+}
+
+static int
+escl_is_tls(char * url, char *type)
+{
+    int tls_version = 0;
+    if(!strcmp(type, "_uscans._tcp") ||
+       !strcmp(type, "https"))
+      {
+         while(proto_tls[tls_version] != -1)
+          {
+                if (escl_tls_protocol_supported(url, proto_tls[tls_version]) == CURLE_OK)
+                {
+                        DBG(10, "curl tls compatible (%d)\n", proto_tls[tls_version]);
+                        break;
+                }
+                tls_version++;
+          }
+         if (proto_tls[tls_version] < 1)
+            return 0;
+      }
+      return proto_tls[tls_version];
+}
+#else
+static int
+escl_is_tls(char * url, char *type)
+{
+    (void)url;
+    (void)type;
+    return 0;
+}
+#endif
+
 void
 escl_free_handler(escl_sane_t *handler)
 {
@@ -187,8 +261,13 @@ escl_device_add(int port_nb,
 {
     char tmp[PATH_MAX] = { 0 };
     char *model = NULL;
+    char url_port[512] = { 0 };
+    int tls_version = 0;
     ESCL_Device *current = NULL;
     DBG (10, "escl_device_add\n");
+    snprintf(url_port, sizeof(url_port), "https://%s:%d", ip_address, port_nb);
+    tls_version = escl_is_tls(url_port, type);
+
     for (current = list_devices_primary; current; current = current->next) {
 	if ((strcmp(current->ip_address, ip_address) == 0) ||
             (uuid && current->uuid && !strcmp(current->uuid, uuid)))
@@ -206,6 +285,7 @@ escl_device_add(int port_nb,
                        }
                        current->port_nb = port_nb;
                        current->https = SANE_TRUE;
+                       current->tls = tls_version;
                     }
 	          return (SANE_STATUS_GOOD);
                 }
@@ -226,6 +306,7 @@ escl_device_add(int port_nb,
     } else {
         current->https = SANE_FALSE;
     }
+    current->tls = tls_version;
     model = (char*)(tmp[0] != 0 ? tmp : model_name);
     current->model_name = strdup(model);
     current->ip_address = strdup(ip_address);
@@ -470,7 +551,6 @@ attach_one_config(SANEI_Config __sane_unused__ *config, const char *line,
         }
         escl_device->model_name = opt_model ? opt_model : strdup("Unknown model");
         escl_device->is = strdup("flatbed or ADF scanner");
-        escl_device->type = strdup("In url");
         escl_device->uuid = NULL;
     }
 
@@ -515,6 +595,9 @@ attach_one_config(SANEI_Config __sane_unused__ *config, const char *line,
     }
     escl_device->is = strdup("flatbed or ADF scanner");
     escl_device->uuid = NULL;
+    char url_port[512] = { 0 };
+    snprintf(url_port, sizeof(url_port), "https://%s:%d", escl_device->ip_address, escl_device->port_nb);
+    escl_device->tls = escl_is_tls(url_port, escl_device->type);
     status = escl_check_and_add_device(escl_device);
     if (status == SANE_STATUS_GOOD)
        escl_device = NULL;
@@ -956,7 +1039,7 @@ init_options(SANE_String_Const name_source, escl_sane_t *s)
     s->opt[OPT_BRIGHTNESS].constraint_type = SANE_CONSTRAINT_RANGE;
     if (s->scanner->brightness) {
        s->opt[OPT_BRIGHTNESS].constraint.range = &s->brightness_range;
-       s->val[OPT_BRIGHTNESS].w = s->scanner->brightness->normal;
+       s->val[OPT_BRIGHTNESS].w = s->scanner->brightness->value;
        s->brightness_range.quant=1;
        s->brightness_range.min=s->scanner->brightness->min;
        s->brightness_range.max=s->scanner->brightness->max;
@@ -975,7 +1058,7 @@ init_options(SANE_String_Const name_source, escl_sane_t *s)
     s->opt[OPT_CONTRAST].constraint_type = SANE_CONSTRAINT_RANGE;
     if (s->scanner->contrast) {
        s->opt[OPT_CONTRAST].constraint.range = &s->contrast_range;
-       s->val[OPT_CONTRAST].w = s->scanner->contrast->normal;
+       s->val[OPT_CONTRAST].w = s->scanner->contrast->value;
        s->contrast_range.quant=1;
        s->contrast_range.min=s->scanner->contrast->min;
        s->contrast_range.max=s->scanner->contrast->max;
@@ -994,7 +1077,7 @@ init_options(SANE_String_Const name_source, escl_sane_t *s)
     s->opt[OPT_SHARPEN].constraint_type = SANE_CONSTRAINT_RANGE;
     if (s->scanner->sharpen) {
        s->opt[OPT_SHARPEN].constraint.range = &s->sharpen_range;
-       s->val[OPT_SHARPEN].w = s->scanner->sharpen->normal;
+       s->val[OPT_SHARPEN].w = s->scanner->sharpen->value;
        s->sharpen_range.quant=1;
        s->sharpen_range.min=s->scanner->sharpen->min;
        s->sharpen_range.max=s->scanner->sharpen->max;
@@ -1014,7 +1097,7 @@ init_options(SANE_String_Const name_source, escl_sane_t *s)
     s->opt[OPT_THRESHOLD].constraint_type = SANE_CONSTRAINT_RANGE;
     if (s->scanner->threshold) {
       s->opt[OPT_THRESHOLD].constraint.range = &s->thresold_range;
-      s->val[OPT_THRESHOLD].w = s->scanner->threshold->normal;
+      s->val[OPT_THRESHOLD].w = s->scanner->threshold->value;
       s->thresold_range.quant=1;
       s->thresold_range.min= s->scanner->threshold->min;
       s->thresold_range.max=s->scanner->threshold->max;
@@ -1069,9 +1152,11 @@ escl_parse_name(SANE_String_Const name, ESCL_Device *device)
 
     if (strncmp(name, "https://", 8) == 0) {
         device->https = SANE_TRUE;
+        device->type = strdup("https");
         host = name + 8;
     } else if (strncmp(name, "http://", 7) == 0) {
         device->https = SANE_FALSE;
+        device->type = strdup("http");
         host = name + 7;
     } else {
         DBG(1, "Unknown URL scheme in %s", name);
@@ -1811,6 +1896,8 @@ escl_curl_url(CURL *handle, const ESCL_Device *device, SANE_String_Const path)
         DBG( 1, "Ignoring safety certificates, use https\n");
         curl_easy_setopt(handle, CURLOPT_SSL_VERIFYPEER, 0L);
         curl_easy_setopt(handle, CURLOPT_SSL_VERIFYHOST, 0L);
+        if (device->tls > 0)
+           curl_easy_setopt(handle, CURLOPT_SSLVERSION, device->tls);
     }
     if (device->unix_socket != NULL) {
         DBG( 1, "Using local socket %s\n", device->unix_socket );
diff --git a/backend/escl/escl.h b/backend/escl/escl.h
index 142b4b4..f99bff9 100644
--- a/backend/escl/escl.h
+++ b/backend/escl/escl.h
@@ -92,10 +92,12 @@ typedef struct {
 typedef struct ESCL_Device {
     struct ESCL_Device *next;
 
+    double    version;
     char     *model_name;
     int       port_nb;
     char     *ip_address;
     char     *is;
+    int       tls;
     char     *uuid;
     char     *type;
     SANE_Bool https;
@@ -146,6 +148,7 @@ typedef struct support
     int min;
     int max;
     int normal;
+    int value;
     int step;
 } support_t;
 
diff --git a/backend/escl/escl_capabilities.c b/backend/escl/escl_capabilities.c
index 7422896..efbd547 100644
--- a/backend/escl/escl_capabilities.c
+++ b/backend/escl/escl_capabilities.c
@@ -325,7 +325,8 @@ print_support(xmlNode *node)
             cpt++;
 	}
 	else if (!strcmp((const char *)node->name, "Normal")) {
-            sup->normal = atoi((const char *)xmlNodeGetContent(node));
+            sup->value = atoi((const char *)xmlNodeGetContent(node));
+            sup->normal = sup->value;
             cpt++;
             have_norm = 1;
 	}
@@ -338,7 +339,8 @@ print_support(xmlNode *node)
     if (cpt == 4)
         return sup;
     if (cpt == 3 && have_norm == 0) {
-	sup->normal = (sup->max / 2 );
+	sup->value = (sup->max / 2 );
+	sup->normal = sup->value;
         return sup;
     }
     free(sup);
@@ -428,6 +430,10 @@ print_xml_c(xmlNode *node, ESCL_Device *device, capabilities_t *scanner, int typ
             if (find_nodes_c(node) && type != -1)
                 find_true_variables(node, scanner, type);
         }
+        if (!strcmp((const char *)node->name, "Version")&& node->ns && node->ns->prefix){
+            if (!strcmp((const char*)node->ns->prefix, "pwg"))
+                device->version = atof ((const char *)xmlNodeGetContent(node));
+	}
         if (!strcmp((const char *)node->name, "MakeAndModel")){
             device->model_name = strdup((const char *)xmlNodeGetContent(node));
 	}
@@ -582,6 +588,7 @@ escl_capabilities(ESCL_Device *device, char *blacklist, SANE_Status *status)
         strstr(header->memory, "Server: HP_Compact_Server"))
         device->hack = curl_slist_append(NULL, "Host: localhost");
 
+    device->version = 0.0;
     scanner->source = 0;
     scanner->Sources = (SANE_String_Const *)malloc(sizeof(SANE_String_Const) * 4);
     for (i = 0; i < 4; i++)
diff --git a/backend/escl/escl_devices.c b/backend/escl/escl_devices.c
index 92e064b..a2fdb80 100644
--- a/backend/escl/escl_devices.c
+++ b/backend/escl/escl_devices.c
@@ -30,6 +30,7 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
+#include <arpa/inet.h>
 
 #include <avahi-client/lookup.h>
 #include <avahi-common/error.h>
@@ -53,47 +54,65 @@ static int count_finish = 0;
  */
 static void
 resolve_callback(AvahiServiceResolver *r, AVAHI_GCC_UNUSED AvahiIfIndex interface,
-                            AVAHI_GCC_UNUSED AvahiProtocol protocol,
-                            AvahiResolverEvent event, const char *name,
+                            AvahiProtocol protocol,
+                            AvahiResolverEvent event,
+                            const char *name,
                             const char __sane_unused__ *type,
                             const char __sane_unused__ *domain,
                             const char __sane_unused__ *host_name,
-                            const AvahiAddress *address, uint16_t port, AvahiStringList *txt,
+                            const AvahiAddress *address,
+                            uint16_t port,
+                            AvahiStringList *txt,
                             AvahiLookupResultFlags __sane_unused__ flags,
                             void __sane_unused__ *userdata)
 {
-    char a[AVAHI_ADDRESS_STR_MAX], *t;
+    char a[(AVAHI_ADDRESS_STR_MAX + 10)] = { 0 };
+    char *t;
     const char *is;
     const char *uuid;
     AvahiStringList   *s;
     assert(r);
     switch (event) {
-    case AVAHI_RESOLVER_FAILURE:
-        break;
-    case AVAHI_RESOLVER_FOUND:
-        avahi_address_snprint(a, sizeof(a), address);
-        t = avahi_string_list_to_string(txt);
-        if (strstr(t, "\"rs=eSCL\"") || strstr(t, "\"rs=/eSCL\"")) {
-	    char ip_add[PATH_MAX] = {0};
-	    s = avahi_string_list_find(txt, "is");
-	    if (s && s->size > 3)
-	       is = (const char*)s->text + 3;
-	    else
-	       is = (const char*)NULL;
-	    s = avahi_string_list_find(txt, "uuid");
-	    if (s && s->size > 5)
-	       uuid = (const char*)s->text + 5;
-	    else
-	       uuid = (const char*)NULL;
-            DBG (10, "resolve_callback [%s]\n", a);
-            if (strstr(a, "127.0.0.1") != NULL) {
-               snprintf(ip_add, sizeof(ip_add), "%s", "localhost");
-               DBG (10,"resolve_callback fix redirect [localhost]\n");
-            }
+        case AVAHI_RESOLVER_FAILURE:
+           break;
+        case AVAHI_RESOLVER_FOUND:
+        {
+	    char *psz_addr = ((void*)0);
+            char b[128] = { 0 };
+	    avahi_address_snprint(b, (sizeof(b)/sizeof(b[0]))-1, address);
+#ifdef ENABLE_IPV6
+            if (protocol == AVAHI_PROTO_INET6 && strchr(b, ':'))
+            {
+		if ( asprintf( &psz_addr, "[%s]", b ) == -1 )
+		   break;
+	    }
             else
-               snprintf(ip_add, sizeof(ip_add), "%s", a);
-            escl_device_add(port, name, ip_add, is, uuid, (char*)type);
-        }
+#endif
+	    {
+		if ( asprintf( &psz_addr, "%s", b ) == -1 )
+		   break;
+	    }
+            t = avahi_string_list_to_string(txt);
+            if (strstr(t, "\"rs=eSCL\"") || strstr(t, "\"rs=/eSCL\"")) {
+	        s = avahi_string_list_find(txt, "is");
+	        if (s && s->size > 3)
+	            is = (const char*)s->text + 3;
+	        else
+	            is = (const char*)NULL;
+	        s = avahi_string_list_find(txt, "uuid");
+	        if (s && s->size > 5)
+	            uuid = (const char*)s->text + 5;
+	        else
+	            uuid = (const char*)NULL;
+                DBG (10, "resolve_callback [%s]\n", a);
+                if (strstr(psz_addr, "127.0.0.1") != NULL) {
+                    escl_device_add(port, name, "localhost", is, uuid, (char*)type);
+                    DBG (10,"resolve_callback fix redirect [localhost]\n");
+                }
+                else
+                    escl_device_add(port, name, psz_addr, is, uuid, (char*)type);
+            }
+	}
     }
 }
 
diff --git a/backend/escl/escl_newjob.c b/backend/escl/escl_newjob.c
index 98a953f..e1b326f 100644
--- a/backend/escl/escl_newjob.c
+++ b/backend/escl/escl_newjob.c
@@ -46,7 +46,7 @@ struct downloading
 static const char settings[] =
     "<?xml version=\"1.0\" encoding=\"UTF-8\"?>"                        \
     "<scan:ScanSettings xmlns:pwg=\"http://www.pwg.org/schemas/2010/12/sm\" xmlns:scan=\"http://schemas.hp.com/imaging/escl/2011/05/03\">" \
-    "   <pwg:Version>2.0</pwg:Version>" \
+    "   <pwg:Version>%.2f</pwg:Version>" \
     "   <pwg:ScanRegions>" \
     "      <pwg:ScanRegion>" \
     "          <pwg:ContentRegionUnits>escl:ThreeHundredthsOfInches</pwg:ContentRegionUnits>" \
@@ -56,13 +56,11 @@ static const char settings[] =
     "          <pwg:YOffset>%d</pwg:YOffset>" \
     "      </pwg:ScanRegion>" \
     "   </pwg:ScanRegions>" \
-    "   <pwg:DocumentFormat>%s</pwg:DocumentFormat>" \
     "%s" \
     "   <scan:ColorMode>%s</scan:ColorMode>" \
     "   <scan:XResolution>%d</scan:XResolution>" \
     "   <scan:YResolution>%d</scan:YResolution>" \
     "   <pwg:InputSource>%s</pwg:InputSource>" \
-    "   <scan:InputSource>%s</scan:InputSource>" \
     "%s" \
     "%s" \
     "</scan:ScanSettings>";
@@ -138,8 +136,8 @@ escl_newjob (capabilities_t *scanner, const ESCL_Device *device, SANE_Status *st
     char *location = NULL;
     char *result = NULL;
     char *temporary = NULL;
-    char *f_ext = "";
     char *format_ext = NULL;
+    char f_ext_tmp[1024];
     char duplex_mode[1024] = { 0 };
     int wakup_count = 0;
 
@@ -189,16 +187,22 @@ escl_newjob (capabilities_t *scanner, const ESCL_Device *device, SANE_Status *st
 	    scanner->caps[scanner->source].default_format =
 		    strdup(scanner->caps[scanner->source].DocumentFormats[have_pdf]);
     }
-    if (scanner->caps[scanner->source].format_ext == 1)
+    if (device->version <= 2.0)
     {
-        char f_ext_tmp[1024];
+        // For eSCL 2.0 and older clients
         snprintf(f_ext_tmp, sizeof(f_ext_tmp),
-			"   <scan:DocumentFormatExt>%s</scan:DocumentFormatExt>",
+			"   <pwg:DocumentFormat>%s</pwg:DocumentFormat>",
     			scanner->caps[scanner->source].default_format);
-        format_ext = f_ext_tmp;
     }
     else
-      format_ext = f_ext;
+    {
+        // For eSCL 2.1 and newer clients
+        snprintf(f_ext_tmp, sizeof(f_ext_tmp),
+			"   <scan:DocumentFormatExt>%s</scan:DocumentFormatExt>",
+    			scanner->caps[scanner->source].default_format);
+    }
+    format_ext = f_ext_tmp;
+
     if(scanner->source > PLATEN && scanner->Sources[ADFDUPLEX]) {
        snprintf(duplex_mode, sizeof(duplex_mode),
 		       "   <scan:Duplex>%s</scan:Duplex>",
@@ -215,52 +219,63 @@ escl_newjob (capabilities_t *scanner, const ESCL_Device *device, SANE_Status *st
     char *source = (scanner->source == PLATEN ? "Platen" : "Feeder");
     if (scanner->use_threshold)
     {
-       char *tmp = add_support_option("ThresholdSupport", scanner->val_threshold);
-       if (support_options[0])
-          strcat(support_options, tmp);
-       else
-          strcpy(support_options, tmp);
-       free(tmp);
+       if (scanner->val_threshold != scanner->threshold->value)
+       {
+          char *tmp = add_support_option("ThresholdSupport", scanner->val_threshold);
+          if (support_options[0])
+             strcat(support_options, tmp);
+          else
+             strcpy(support_options, tmp);
+          free(tmp);
+       }
     }
     if (scanner->use_sharpen)
     {
-       char *tmp = add_support_option("SharpenSupport", scanner->val_sharpen);
-       if (support_options[0])
-          strcat(support_options, tmp);
-       else
-          strcpy(support_options, tmp);
-       free(tmp);
+       if (scanner->val_sharpen != scanner->sharpen->value)
+       {
+          char *tmp = add_support_option("SharpenSupport", scanner->val_sharpen);
+          if (support_options[0])
+             strcat(support_options, tmp);
+          else
+             strcpy(support_options, tmp);
+          free(tmp);
+       }
     }
     if (scanner->use_contrast)
     {
-       char *tmp = add_support_option("ContrastSupport", scanner->val_contrast);
-       if (support_options[0])
-          strcat(support_options, tmp);
-       else
-          strcpy(support_options, tmp);
-       free(tmp);
+       if (scanner->val_contrast != scanner->contrast->value)
+       {
+          char *tmp = add_support_option("ContrastSupport", scanner->val_contrast);
+          if (support_options[0])
+             strcat(support_options, tmp);
+          else
+             strcpy(support_options, tmp);
+          free(tmp);
+       }
     }
     if (scanner->use_brightness)
     {
-       char *tmp = add_support_option("BrightnessSupport", scanner->val_brightness);
-       if (support_options[0])
-          strcat(support_options, tmp);
-       else
-          strcpy(support_options, tmp);
-       free(tmp);
+       if (scanner->val_brightness != scanner->brightness->value)
+       {
+          char *tmp = add_support_option("BrightnessSupport", scanner->val_brightness);
+          if (support_options[0])
+             strcat(support_options, tmp);
+          else
+             strcpy(support_options, tmp);
+          free(tmp);
+       }
     }
     snprintf(cap_data, sizeof(cap_data), settings,
+    		device->version,
     		scanner->caps[scanner->source].height,
     		scanner->caps[scanner->source].width,
     		off_x,
     		off_y,
-    		scanner->caps[scanner->source].default_format,
     		format_ext,
     		scanner->caps[scanner->source].default_color,
     		scanner->caps[scanner->source].default_resolution,
     		scanner->caps[scanner->source].default_resolution,
     		source,
-    		source,
     		duplex_mode[0] == 0 ? " " : duplex_mode,
                 support_options[0] == 0 ? " " : support_options);
     upload->memory = strdup(cap_data);
diff --git a/backend/escl/escl_pdf.c b/backend/escl/escl_pdf.c
index 02dce66..8277e1d 100644
--- a/backend/escl/escl_pdf.c
+++ b/backend/escl/escl_pdf.c
@@ -44,8 +44,9 @@
 
 #if HAVE_POPPLER_GLIB
 
-#define INPUT_BUFFER_SIZE 4096
+#define ESCL_PDF_USE_MAPPED_FILE POPPLER_CHECK_VERSION(0,82,0)
 
+#if ! ESCL_PDF_USE_MAPPED_FILE
 static unsigned char*
 set_file_in_buffer(FILE *fp, int *size)
 {
@@ -70,6 +71,7 @@ set_file_in_buffer(FILE *fp, int *size)
     *size = nx;
     return data;
 }
+#endif
 
 static unsigned char *
 cairo_surface_to_pixels (cairo_surface_t *surface, int bps)
@@ -109,28 +111,52 @@ get_PDF_data(capabilities_t *scanner, int *width, int *height, int *bps)
     PopplerPage *page;
     PopplerDocument   *doc;
     double dw, dh;
-    int w, h, size = 0;
-    char *data = NULL;
+    int w, h;
     unsigned char* surface = NULL;
     SANE_Status status = SANE_STATUS_GOOD;
 
+#if ESCL_PDF_USE_MAPPED_FILE
+    GMappedFile *file;
+    GBytes *bytes;
+
+    file = g_mapped_file_new_from_fd (fileno (scanner->tmp), 0, NULL);
+    if (!file) {
+                DBG(1, "Error : g_mapped_file_new_from_fd");
+                status =  SANE_STATUS_INVAL;
+                goto close_file;
+        }
+
+    bytes = g_mapped_file_get_bytes (file);
+    if (!bytes) {
+                DBG(1, "Error : g_mapped_file_get_bytes");
+                status =  SANE_STATUS_INVAL;
+                goto free_file;
+        }
+
+    doc = poppler_document_new_from_bytes (bytes, NULL, NULL);
+    if (!doc) {
+                DBG(1, "Error : poppler_document_new_from_bytes");
+                status =  SANE_STATUS_INVAL;
+                goto free_bytes;
+        }
+#else
+    int size = 0;
+    char *data = NULL;
 
     data = (char*)set_file_in_buffer(scanner->tmp, &size);
     if (!data) {
-                DBG(1, "Error : poppler_document_new_from_data");
+                DBG(1, "Error : set_file_in_buffer");
                 status =  SANE_STATUS_INVAL;
                 goto close_file;
         }
-    doc = poppler_document_new_from_data(data,
-                                       size,
-                                       NULL,
-                                       NULL);
 
+    doc = poppler_document_new_from_data (data, size, NULL, NULL);
     if (!doc) {
                 DBG(1, "Error : poppler_document_new_from_data");
                 status =  SANE_STATUS_INVAL;
-                goto free_file;
+                goto free_data;
         }
+#endif
 
     page = poppler_document_get_page (doc, 0);
     if (!page) {
@@ -201,8 +227,15 @@ free_page:
     g_object_unref (page);
 free_doc:
     g_object_unref (doc);
+#if ESCL_PDF_USE_MAPPED_FILE
+free_bytes:
+    g_bytes_unref (bytes);
 free_file:
+    g_mapped_file_unref (file);
+#else
+free_data:
     free(data);
+#endif
 close_file:
     if (scanner->tmp)
         fclose(scanner->tmp);
diff --git a/backend/escl/escl_scan.c b/backend/escl/escl_scan.c
index 3350c83..8af6bb2 100644
--- a/backend/escl/escl_scan.c
+++ b/backend/escl/escl_scan.c
@@ -84,6 +84,7 @@ escl_scan(capabilities_t *scanner, const ESCL_Device *device, char *scanJob, cha
             CURLcode res = curl_easy_perform(curl_handle);
             if (res != CURLE_OK) {
                 DBG( 1, "Unable to scan: %s\n", curl_easy_strerror(res));
+                scanner->real_read = 0;
                 fclose(scanner->tmp);
                 scanner->tmp = NULL;
                 status = SANE_STATUS_INVAL;
diff --git a/backend/escl/escl_tiff.c b/backend/escl/escl_tiff.c
index e33498c..e17554e 100644
--- a/backend/escl/escl_tiff.c
+++ b/backend/escl/escl_tiff.c
@@ -26,6 +26,8 @@
 
 #include "escl.h"
 
+#include "../include/_stdint.h"
+
 #include "../include/sane/sanei.h"
 
 #include <stdio.h>
@@ -53,11 +55,11 @@ SANE_Status
 get_TIFF_data(capabilities_t *scanner, int *width, int *height, int *bps)
 {
     TIFF* tif = NULL;
-    uint32  w = 0;
-    uint32  h = 0;
+    uint32_t w = 0;
+    uint32_t h = 0;
     unsigned char *surface = NULL;         /*  image data*/
     int components = 4;
-    uint32 npixels = 0;
+    uint32_t npixels = 0;
     SANE_Status status = SANE_STATUS_GOOD;
 
     lseek(fileno(scanner->tmp), 0, SEEK_SET);
@@ -71,15 +73,15 @@ get_TIFF_data(capabilities_t *scanner, int *width, int *height, int *bps)
     TIFFGetField(tif, TIFFTAG_IMAGEWIDTH, &w);
     TIFFGetField(tif, TIFFTAG_IMAGELENGTH, &h);
     npixels = w * h;
-    surface = (unsigned char*) malloc(npixels * sizeof (uint32));
-    if (surface != NULL)
+    surface = (unsigned char*) malloc(npixels * sizeof (uint32_t));
+    if (surface == NULL)
     {
         DBG( 1, "Escl Tiff : raster Memory allocation problem.\n");
         status = SANE_STATUS_INVAL;
 	goto close_tiff;
     }
 
-    if (!TIFFReadRGBAImage(tif, w, h, (uint32 *)surface, 0))
+    if (!TIFFReadRGBAImage(tif, w, h, (uint32_t *)surface, 0))
     {
         DBG( 1, "Escl Tiff : Problem reading image data.\n");
         status = SANE_STATUS_INVAL;