Adding upstream version 4.2.2.upstream/4.2.2

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 408 insertions, 0 deletions

diff --git a/epan/dissectors/packet-cups.c b/epan/dissectors/packet-cups.c
new file mode 100644
index 00000000..0890e856
--- /dev/null
+++ b/epan/dissectors/packet-cups.c
@@ -0,0 +1,408 @@
+/* packet-cups.c
+ * Routines for Common Unix Printing System (CUPS) Browsing Protocol
+ * packet disassembly for the Wireshark network traffic analyzer.
+ *
+ * Charles Levert <charles@comm.polymtl.ca>
+ * Copyright 2001 Charles Levert
+ *
+ * SPDX-License-Identifier: GPL-2.0-or-later
+ *
+ */
+
+#include "config.h"
+
+#include <epan/packet.h>
+#include <wsutil/str_util.h>
+
+/**********************************************************************/
+
+void proto_register_cups(void);
+void proto_reg_handoff_cups(void);
+
+static dissector_handle_t cups_handle;
+
+/* From cups/cups.h, GNU GPL, Copyright 1997-2001 by Easy Software Products. */
+typedef guint32 cups_ptype_t;           /**** Printer Type/Capability Bits ****/
+enum                                    /* Not a typedef'd enum so we can OR */
+{
+    CUPS_PRINTER_LOCAL = 0x0000,          /* Local printer or class */
+    CUPS_PRINTER_CLASS = 0x0001,          /* Printer class */
+    CUPS_PRINTER_REMOTE = 0x0002,         /* Remote printer or class */
+    CUPS_PRINTER_BW = 0x0004,             /* Can do B&W printing */
+    CUPS_PRINTER_COLOR = 0x0008,          /* Can do color printing */
+    CUPS_PRINTER_DUPLEX = 0x0010,         /* Can do duplexing */
+    CUPS_PRINTER_STAPLE = 0x0020,         /* Can staple output */
+    CUPS_PRINTER_COPIES = 0x0040,         /* Can do copies */
+    CUPS_PRINTER_COLLATE = 0x0080,        /* Can collage copies */
+    CUPS_PRINTER_PUNCH = 0x0100,          /* Can punch output */
+    CUPS_PRINTER_COVER = 0x0200,          /* Can cover output */
+    CUPS_PRINTER_BIND = 0x0400,           /* Can bind output */
+    CUPS_PRINTER_SORT = 0x0800,           /* Can sort output */
+    CUPS_PRINTER_SMALL = 0x1000,          /* Can do Letter/Legal/A4 */
+    CUPS_PRINTER_MEDIUM = 0x2000,         /* Can do Tabloid/B/C/A3/A2 */
+    CUPS_PRINTER_LARGE = 0x4000,          /* Can do D/E/A1/A0 */
+    CUPS_PRINTER_VARIABLE = 0x8000,       /* Can do variable sizes */
+    CUPS_PRINTER_IMPLICIT = 0x10000,      /* Implicit class */
+    CUPS_PRINTER_DEFAULT = 0x20000,       /* Default printer on network */
+    CUPS_PRINTER_OPTIONS = 0xfffc         /* ~(CLASS | REMOTE | IMPLICIT) */
+};
+/* End insert from cups/cups.h */
+
+typedef enum _cups_state {
+    CUPS_IDLE = 3,
+    CUPS_PROCESSING,
+    CUPS_STOPPED
+} cups_state_t;
+
+static const value_string cups_state_values[] = {
+    { CUPS_IDLE,       "idle" },
+    { CUPS_PROCESSING, "processing" },
+    { CUPS_STOPPED,    "stopped" },
+    { 0,               NULL }
+};
+
+static const true_false_string tfs_implicit_explicit = { "Implicit class", "Explicit class" };
+static const true_false_string tfs_printer_class = { "Printer class", "Single printer" };
+
+static int proto_cups = -1;
+static int hf_cups_ptype = -1;
+static int hf_cups_ptype_default = -1;
+static int hf_cups_ptype_implicit = -1;
+static int hf_cups_ptype_variable = -1;
+static int hf_cups_ptype_large = -1;
+static int hf_cups_ptype_medium = -1;
+static int hf_cups_ptype_small = -1;
+static int hf_cups_ptype_sort = -1;
+static int hf_cups_ptype_bind = -1;
+static int hf_cups_ptype_cover = -1;
+static int hf_cups_ptype_punch = -1;
+static int hf_cups_ptype_collate = -1;
+static int hf_cups_ptype_copies = -1;
+static int hf_cups_ptype_staple = -1;
+static int hf_cups_ptype_duplex = -1;
+static int hf_cups_ptype_color = -1;
+static int hf_cups_ptype_bw = -1;
+static int hf_cups_ptype_remote = -1;
+static int hf_cups_ptype_class = -1;
+static int hf_cups_state = -1;
+static int hf_cups_uri = -1;
+static int hf_cups_location = -1;
+static int hf_cups_information = -1;
+static int hf_cups_make_model = -1;
+
+static gint ett_cups = -1;
+static gint ett_cups_ptype = -1;
+
+/* patterns used for tvb_ws_mempbrk_pattern_guint8 */
+static ws_mempbrk_pattern pbrk_whitespace;
+
+/* This protocol is heavily related to IPP, but it is CUPS-specific
+   and non-standard. */
+#define UDP_PORT_CUPS  631
+#define PROTO_TAG_CUPS "CUPS"
+
+static guint get_hex_uint(tvbuff_t *tvb, gint offset, gint *next_offset);
+static gboolean skip_space(tvbuff_t *tvb, gint offset, gint *next_offset);
+static const guint8* get_quoted_string(tvbuff_t *tvb, gint offset,
+    gint *next_offset, guint *len);
+static const guint8* get_unquoted_string(tvbuff_t *tvb, gint offset,
+    gint *next_offset, guint *len);
+
+/**********************************************************************/
+
+static int
+dissect_cups(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data _U_)
+{
+    proto_tree   *cups_tree = NULL;
+    proto_tree   *ptype_subtree = NULL;
+    proto_item   *ti = NULL;
+    gint          offset = 0;
+    gint          next_offset;
+    guint         len;
+    const guint8 *str;
+    cups_ptype_t  ptype;
+    unsigned int  state;
+
+    col_set_str(pinfo->cinfo, COL_PROTOCOL, PROTO_TAG_CUPS);
+    col_clear(pinfo->cinfo, COL_INFO);
+
+    ti = proto_tree_add_item(tree, proto_cups, tvb, offset, -1, ENC_NA);
+    cups_tree = proto_item_add_subtree(ti, ett_cups);
+
+    /* Format (1450 bytes max.):  */
+    /* type state uri ["location" ["info" ["make-and-model"]]]\n */
+
+    ptype = get_hex_uint(tvb, offset, &next_offset);
+    len = next_offset - offset;
+    if (len != 0) {
+        ti = proto_tree_add_uint(cups_tree, hf_cups_ptype, tvb, offset, len, ptype);
+        ptype_subtree = proto_item_add_subtree(ti, ett_cups_ptype);
+        proto_tree_add_item(ptype_subtree, hf_cups_ptype_default, tvb, offset, len, ENC_BIG_ENDIAN);
+        proto_tree_add_item(ptype_subtree, hf_cups_ptype_implicit, tvb, offset, len, ENC_BIG_ENDIAN);
+        proto_tree_add_item(ptype_subtree, hf_cups_ptype_variable, tvb, offset, len, ENC_BIG_ENDIAN);
+        proto_tree_add_item(ptype_subtree, hf_cups_ptype_large, tvb, offset, len, ENC_BIG_ENDIAN);
+        proto_tree_add_item(ptype_subtree, hf_cups_ptype_medium, tvb, offset, len, ENC_BIG_ENDIAN);
+        proto_tree_add_item(ptype_subtree, hf_cups_ptype_small, tvb, offset, len, ENC_BIG_ENDIAN);
+        proto_tree_add_item(ptype_subtree, hf_cups_ptype_sort, tvb, offset, len, ENC_BIG_ENDIAN);
+        proto_tree_add_item(ptype_subtree, hf_cups_ptype_bind, tvb, offset, len, ENC_BIG_ENDIAN);
+        proto_tree_add_item(ptype_subtree, hf_cups_ptype_cover, tvb, offset, len, ENC_BIG_ENDIAN);
+        proto_tree_add_item(ptype_subtree, hf_cups_ptype_punch, tvb, offset, len, ENC_BIG_ENDIAN);
+        proto_tree_add_item(ptype_subtree, hf_cups_ptype_collate, tvb, offset, len, ENC_BIG_ENDIAN);
+        proto_tree_add_item(ptype_subtree, hf_cups_ptype_copies, tvb, offset, len, ENC_BIG_ENDIAN);
+        proto_tree_add_item(ptype_subtree, hf_cups_ptype_staple, tvb, offset, len, ENC_BIG_ENDIAN);
+        proto_tree_add_item(ptype_subtree, hf_cups_ptype_duplex, tvb, offset, len, ENC_BIG_ENDIAN);
+        proto_tree_add_item(ptype_subtree, hf_cups_ptype_color, tvb, offset, len, ENC_BIG_ENDIAN);
+        proto_tree_add_item(ptype_subtree, hf_cups_ptype_bw, tvb, offset, len, ENC_BIG_ENDIAN);
+        proto_tree_add_item(ptype_subtree, hf_cups_ptype_remote, tvb, offset, len, ENC_BIG_ENDIAN);
+        proto_tree_add_item(ptype_subtree, hf_cups_ptype_class, tvb, offset, len, ENC_BIG_ENDIAN);
+    }
+    offset = next_offset;
+
+    if (!skip_space(tvb, offset, &next_offset))
+        return offset;    /* end of packet */
+    offset = next_offset;
+
+    state = get_hex_uint(tvb, offset, &next_offset);
+    len = next_offset - offset;
+    if (len != 0) {
+        proto_tree_add_uint(cups_tree, hf_cups_state, tvb, offset, len, state);
+    }
+    offset = next_offset;
+
+    if (!skip_space(tvb, offset, &next_offset))
+        return offset;    /* end of packet */
+    offset = next_offset;
+
+    str = get_unquoted_string(tvb, offset, &next_offset, &len);
+    if (str == NULL)
+        return offset;    /* separator/terminator not found */
+
+    proto_tree_add_string(cups_tree, hf_cups_uri, tvb, offset, len, str);
+    col_add_fstr(pinfo->cinfo, COL_INFO, "%s (%s)",
+            str, val_to_str(state, cups_state_values, "0x%x"));
+    offset = next_offset;
+
+    if (!cups_tree)
+        return offset;
+
+    if (!skip_space(tvb, offset, &next_offset))
+        return offset;    /* end of packet */
+    offset = next_offset;
+
+    str = get_quoted_string(tvb, offset, &next_offset, &len);
+    if (str == NULL)
+        return offset;    /* separator/terminator not found */
+    proto_tree_add_string(cups_tree, hf_cups_location, tvb, offset+1, len, str);
+    offset = next_offset;
+
+    if (!skip_space(tvb, offset, &next_offset))
+        return offset;    /* end of packet */
+    offset = next_offset;
+
+    str = get_quoted_string(tvb, offset, &next_offset, &len);
+    if (str == NULL)
+        return offset;    /* separator/terminator not found */
+    proto_tree_add_string(cups_tree, hf_cups_information, tvb, offset+1, len, str);
+    offset = next_offset;
+
+    if (!skip_space(tvb, offset, &next_offset))
+        return offset;    /* end of packet */
+    offset = next_offset;
+
+    str = get_quoted_string(tvb, offset, &next_offset, &len);
+    if (str == NULL)
+        return offset;    /* separator/terminator not found */
+    proto_tree_add_string(cups_tree, hf_cups_make_model, tvb, offset+1, len, str);
+
+    return next_offset;
+}
+
+static guint
+get_hex_uint(tvbuff_t *tvb, gint offset, gint *next_offset)
+{
+    int c;
+    guint u = 0;
+
+    while (g_ascii_isxdigit(c = tvb_get_guint8(tvb, offset))) {
+        u = 16*u + ws_xton(c);
+
+        offset++;
+    }
+
+    *next_offset = offset;
+
+    return u;
+}
+
+static gboolean
+skip_space(tvbuff_t *tvb, gint offset, gint *next_offset)
+{
+    int c;
+
+    while ((c = tvb_get_guint8(tvb, offset)) == ' ')
+        offset++;
+    if (c == '\r' || c == '\n')
+        return FALSE;    /* end of packet */
+
+    *next_offset = offset;
+
+    return TRUE;
+}
+
+static const guint8*
+get_quoted_string(tvbuff_t *tvb, gint offset, gint *next_offset, guint *len)
+{
+    int c;
+    const guint8* s = NULL;
+    guint l = 0;
+    gint o;
+
+    c = tvb_get_guint8(tvb, offset);
+    if (c == '"') {
+        o = tvb_find_guint8(tvb, offset+1, -1, '"');
+        if (o != -1) {
+            offset++;
+            l = o - offset;
+            s = tvb_get_string_enc(wmem_packet_scope(), tvb, offset, l, ENC_UTF_8);
+            offset = o + 1;
+        }
+    }
+
+    *next_offset = offset;
+    *len = l;
+
+    return s;
+}
+
+static const guint8*
+get_unquoted_string(tvbuff_t *tvb, gint offset, gint *next_offset, guint *len)
+{
+    const guint8* s = NULL;
+    guint l = 0;
+    gint o;
+
+    o = tvb_ws_mempbrk_pattern_guint8(tvb, offset, -1, &pbrk_whitespace, NULL);
+    if (o != -1) {
+        l = o - offset;
+        s = tvb_get_string_enc(wmem_packet_scope(), tvb, offset, l, ENC_UTF_8);
+        offset = o;
+    }
+
+    *next_offset = offset;
+    *len = l;
+
+    return s;
+}
+
+/**********************************************************************/
+
+void
+proto_register_cups(void)
+{
+    static hf_register_info hf[] = {
+        { &hf_cups_ptype,
+            { "Type",     "cups.ptype", FT_UINT32, BASE_HEX,
+              NULL, 0x0, NULL, HFILL }},
+        { &hf_cups_ptype_default,
+            { "Default printer on network", "cups.ptype.default", FT_BOOLEAN, 32,
+                TFS(&tfs_yes_no), CUPS_PRINTER_DEFAULT, NULL, HFILL }},
+        { &hf_cups_ptype_implicit,
+            { "Class", "cups.ptype.implicit", FT_BOOLEAN, 32,
+                TFS(&tfs_implicit_explicit), CUPS_PRINTER_IMPLICIT, NULL, HFILL }},
+        { &hf_cups_ptype_variable,
+            { "Can print variable sizes", "cups.ptype.variable", FT_BOOLEAN, 32,
+                TFS(&tfs_yes_no), CUPS_PRINTER_VARIABLE, NULL, HFILL }},
+        { &hf_cups_ptype_large,
+            { "Can print up to 36x48 inches", "cups.ptype.large", FT_BOOLEAN, 32,
+                TFS(&tfs_yes_no), CUPS_PRINTER_LARGE, NULL, HFILL }},
+        { &hf_cups_ptype_medium,
+            { "Can print up to 18x24 inches", "cups.ptype.medium", FT_BOOLEAN, 32,
+                TFS(&tfs_yes_no), CUPS_PRINTER_MEDIUM, NULL, HFILL }},
+        { &hf_cups_ptype_small,
+            { "Can print up to 9x14 inches", "cups.ptype.small", FT_BOOLEAN, 32,
+                TFS(&tfs_yes_no), CUPS_PRINTER_SMALL, NULL, HFILL }},
+        { &hf_cups_ptype_sort,
+            { "Can sort", "cups.ptype.sort", FT_BOOLEAN, 32,
+                TFS(&tfs_yes_no), CUPS_PRINTER_SORT, NULL, HFILL }},
+        { &hf_cups_ptype_bind,
+            { "Can bind", "cups.ptype.bind", FT_BOOLEAN, 32,
+                TFS(&tfs_yes_no), CUPS_PRINTER_BIND, NULL, HFILL }},
+        { &hf_cups_ptype_cover,
+            { "Can cover", "cups.ptype.cover", FT_BOOLEAN, 32,
+                TFS(&tfs_yes_no), CUPS_PRINTER_COVER, NULL, HFILL }},
+        { &hf_cups_ptype_punch,
+            { "Can punch holes", "cups.ptype.punch", FT_BOOLEAN, 32,
+                TFS(&tfs_yes_no), CUPS_PRINTER_PUNCH, NULL, HFILL }},
+        { &hf_cups_ptype_collate,
+            { "Can do fast collating", "cups.ptype.collate", FT_BOOLEAN, 32,
+                TFS(&tfs_yes_no), CUPS_PRINTER_COLLATE, NULL, HFILL }},
+        { &hf_cups_ptype_copies,
+            { "Can do fast copies", "cups.ptype.copies", FT_BOOLEAN, 32,
+                TFS(&tfs_yes_no), CUPS_PRINTER_COPIES, NULL, HFILL }},
+        { &hf_cups_ptype_staple,
+            { "Can staple", "cups.ptype.staple", FT_BOOLEAN, 32,
+                TFS(&tfs_yes_no), CUPS_PRINTER_STAPLE, NULL, HFILL }},
+        { &hf_cups_ptype_duplex,
+            { "Can duplex", "cups.ptype.duplex", FT_BOOLEAN, 32,
+                TFS(&tfs_yes_no), CUPS_PRINTER_DUPLEX, NULL, HFILL }},
+        { &hf_cups_ptype_color,
+            { "Can print color", "cups.ptype.color", FT_BOOLEAN, 32,
+                TFS(&tfs_yes_no), CUPS_PRINTER_COLOR, NULL, HFILL }},
+        { &hf_cups_ptype_bw,
+            { "Can print black", "cups.ptype.bw", FT_BOOLEAN, 32,
+                TFS(&tfs_yes_no), CUPS_PRINTER_BW, NULL, HFILL }},
+        { &hf_cups_ptype_remote,
+            { "Remote", "cups.ptype.remote", FT_BOOLEAN, 32,
+                TFS(&tfs_yes_no), CUPS_PRINTER_REMOTE, NULL, HFILL }},
+        { &hf_cups_ptype_class,
+            { "Class", "cups.ptype.class", FT_BOOLEAN, 32,
+                TFS(&tfs_printer_class), CUPS_PRINTER_CLASS, NULL, HFILL }},
+        { &hf_cups_state,
+            { "State",    "cups.state", FT_UINT8, BASE_HEX,
+                VALS(cups_state_values), 0x0, NULL, HFILL }},
+        { &hf_cups_uri,
+            { "URI",    "cups.uri", FT_STRING, BASE_NONE,
+                NULL, 0x0, NULL, HFILL }},
+        { &hf_cups_location,
+            { "Location",    "cups.location", FT_STRING, BASE_NONE,
+                NULL, 0x0, NULL, HFILL }},
+        { &hf_cups_information,
+            { "Information",    "cups.information", FT_STRING, BASE_NONE,
+                NULL, 0x0, NULL, HFILL }},
+        { &hf_cups_make_model,
+            { "Make and model", "cups.make_model", FT_STRING, BASE_NONE,
+                NULL, 0x0, NULL, HFILL }},
+    };
+
+    static gint *ett[] = {
+        &ett_cups,
+        &ett_cups_ptype
+    };
+
+    proto_cups = proto_register_protocol("Common Unix Printing System (CUPS) Browsing Protocol", "CUPS", "cups");
+    cups_handle = register_dissector("cups", dissect_cups, proto_cups);
+    proto_register_field_array(proto_cups, hf, array_length(hf));
+    proto_register_subtree_array(ett, array_length(ett));
+
+    /* compile patterns */
+    ws_mempbrk_compile(&pbrk_whitespace, " \t\r\n");
+}
+
+void
+proto_reg_handoff_cups(void)
+{
+    dissector_add_uint_with_preference("udp.port", UDP_PORT_CUPS, cups_handle);
+}
+
+/*
+ * Editor modelines  -  https://www.wireshark.org/tools/modelines.html
+ *
+ * Local variables:
+ * c-basic-offset: 4
+ * tab-width: 8
+ * indent-tabs-mode: nil
+ * End:
+ *
+ * vi: set shiftwidth=4 tabstop=8 expandtab:
+ * :indentSize=4:tabSize=8:noTabs=true:
+ */