fuzz: add fuzz_parse_lpq_entry

Signed-off-by: Douglas Bagnall <douglas.bagnall@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>

diff --git a/lib/fuzzing/fuzz_parse_lpq_entry.c b/lib/fuzzing/fuzz_parse_lpq_entry.c
new file mode 100644 (file)
index 0000000..720cc9b
--- /dev/null
+++ b/lib/fuzzing/fuzz_parse_lpq_entry.c
@@ -0,0 +1,65 @@
+/*
+   Fuzzing parse_lpq_entry
+   Copyright (C) Douglas Bagnall <dbagnall@samba.org> 2021
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+#include "../../source3/include/includes.h"
+#include "printing.h"
+#include "fuzzing/fuzzing.h"
+
+
+int LLVMFuzzerInitialize(int *argc, char ***argv)
+{
+       return 0;
+}
+
+#define MAX_LENGTH (1024 * 1024)
+char line[MAX_LENGTH + 1];
+
+int LLVMFuzzerTestOneInput(uint8_t *input, size_t len)
+{
+       enum printing_types printing_type;
+       print_queue_struct pq_buf = {0};
+       print_status_struct status = {0};
+       bool first;
+       unsigned x;
+       TALLOC_CTX *frame = NULL;
+
+       if (len < 1 || len > MAX_LENGTH) {
+               return 0;
+       }
+
+       x = input[0];
+       input++;
+       len--;
+
+       /* There are 14 types, default goes to bsd */
+       printing_type = x & 15;
+       first = (x & 16) ? true : false;
+
+       memcpy(line, input, len);
+       line[len] = '\0';
+
+       /* parse_lpq_bsd requires a stackframe */
+       frame = talloc_stackframe();
+
+       parse_lpq_entry(printing_type,
+                       line,
+                       &pq_buf, /* out */
+                       &status, /* out */
+                       first);
+       talloc_free(frame);
+       return 0;
+}

diff --git a/lib/fuzzing/wscript_build b/lib/fuzzing/wscript_build
index 1322d713d0b5f9c43fd806253952eaa7148af71d..82232e1a2bdd06e6d4f323a66e6cffdadc2989d1 100644 (file)
--- a/lib/fuzzing/wscript_build
+++ b/lib/fuzzing/wscript_build
@@ -17,6 +17,11 @@ bld.SAMBA_BINARY('fuzz_tiniparser',
                  deps='fuzzing tiniparser talloc afl-fuzz-main',
                  fuzzer=True)
 
+bld.SAMBA_BINARY('fuzz_parse_lpq_entry',
+                 source='fuzz_parse_lpq_entry.c',
+                 deps='fuzzing  afl-fuzz-main smbd_base',
+                 fuzzer=True)
+
 bld.SAMBA_BINARY('fuzz_oLschema2ldif',
                  source='fuzz_oLschema2ldif.c',
                  deps='fuzzing oLschema2ldif-lib afl-fuzz-main',