Fuzzer for the text parser.

text/fuzz.go

@@ -0,0 +1,36 @@
+// Copyright 2014 The Prometheus Authors
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package text
+
+import "bytes"
+
+// Build only when actually fuzzing
+// +build gofuzz
+
+// Fuzz text metric parser with with github.com/dvyukov/go-fuzz:
+// 
+//     go-fuzz-build github.com/prometheus/client_golang/text
+//     go-fuzz -bin text-fuzz.zip -workdir fuzz
+//
+// Further input samples should go in the folder fuzz/corpus.
+func Fuzz(in []byte) int {
+    parser := Parser{}
+    _, err := parser.TextToMetricFamilies(bytes.NewReader(in))
+
+    if err != nil {
+        return 0
+    }
+
+    return 1
+}

text/fuzz/corpus/from_test_parse_0

@@ -0,0 +1,2 @@
+
+

text/fuzz/corpus/from_test_parse_1

@@ -0,0 +1,6 @@
+
+minimal_metric 1.234
+another_metric -3e3 103948
+# Even that:
+no_labels{} 3
+# HELP line for non-existing metric will be ignored.

text/fuzz/corpus/from_test_parse_2

@@ -0,0 +1,12 @@
+
+# A normal comment.
+#
+# TYPE name counter
+name{labelname="val1",basename="basevalue"} NaN
+name {labelname="val2",basename="base\"v\\al\nue"} 0.23 1234567890
+# HELP name two-line\n doc  str\\ing
+
+ # HELP  name2  	doc str"ing 2
+  #    TYPE    name2 gauge
+name2{labelname="val2"	,basename   =   "basevalue2"		} +Inf 54321
+name2{ labelname = "val1" , }-Inf

text/fuzz/corpus/from_test_parse_3

@@ -0,0 +1,22 @@
+
+# TYPE my_summary summary
+my_summary{n1="val1",quantile="0.5"} 110
+decoy -1 -2
+my_summary{n1="val1",quantile="0.9"} 140 1
+my_summary_count{n1="val1"} 42
+# Latest timestamp wins in case of a summary.
+my_summary_sum{n1="val1"} 4711 2
+fake_sum{n1="val1"} 2001
+# TYPE another_summary summary
+another_summary_count{n2="val2",n1="val1"} 20
+my_summary_count{n2="val2",n1="val1"} 5 5
+another_summary{n1="val1",n2="val2",quantile=".3"} -1.2
+my_summary_sum{n1="val2"} 08 15
+my_summary{n1="val3", quantile="0.2"} 4711
+  my_summary{n1="val1",n2="val2",quantile="-12.34",} NaN
+# some
+# funny comments
+# HELP 
+# HELP
+# HELP my_summary
+# HELP my_summary 

text/fuzz/corpus/from_test_parse_4

@@ -0,0 +1,10 @@
+
+# HELP request_duration_microseconds The response latency.
+# TYPE request_duration_microseconds histogram
+request_duration_microseconds_bucket{le="100"} 123
+request_duration_microseconds_bucket{le="120"} 412
+request_duration_microseconds_bucket{le="144"} 592
+request_duration_microseconds_bucket{le="172.8"} 1524
+request_duration_microseconds_bucket{le="+Inf"} 2693
+request_duration_microseconds_sum 1.7560473e+06
+request_duration_microseconds_count 2693

text/fuzz/corpus/from_test_parse_error_0

@@ -0,0 +1 @@
+bla 3.14

text/fuzz/corpus/from_test_parse_error_1

@@ -0,0 +1 @@
+metric{label="\t"} 3.14

text/fuzz/corpus/from_test_parse_error_10

@@ -0,0 +1 @@
+metric{label="bla"} 3.14 2 3

text/fuzz/corpus/from_test_parse_error_11

@@ -0,0 +1 @@
+metric{label="bla"} blubb

text/fuzz/corpus/from_test_parse_error_12

@@ -0,0 +1,3 @@
+
+# HELP metric one
+# HELP metric two

text/fuzz/corpus/from_test_parse_error_13

@@ -0,0 +1,3 @@
+
+# TYPE metric counter
+# TYPE metric untyped

text/fuzz/corpus/from_test_parse_error_14

@@ -0,0 +1,3 @@
+
+metric 4.12
+# TYPE metric counter

text/fuzz/corpus/from_test_parse_error_15

@@ -0,0 +1,2 @@
+
+# TYPE metric bla

text/fuzz/corpus/from_test_parse_error_16

@@ -0,0 +1,2 @@
+
+# TYPE met-ric

text/fuzz/corpus/from_test_parse_error_17

@@ -0,0 +1 @@
+@invalidmetric{label="bla"} 3.14 2

text/fuzz/corpus/from_test_parse_error_18

@@ -0,0 +1 @@
+{label="bla"} 3.14 2

text/fuzz/corpus/from_test_parse_error_19

@@ -0,0 +1,3 @@
+
+# TYPE metric histogram
+metric_bucket{le="bla"} 3.14

text/fuzz/corpus/from_test_parse_error_2

@@ -0,0 +1,3 @@
+
+metric{label="new
+line"} 3.14

text/fuzz/corpus/from_test_parse_error_3

@@ -0,0 +1 @@
+metric{@="bla"} 3.14

text/fuzz/corpus/from_test_parse_error_4

@@ -0,0 +1 @@
+metric{__name__="bla"} 3.14

text/fuzz/corpus/from_test_parse_error_5

@@ -0,0 +1 @@
+metric{label+="bla"} 3.14

text/fuzz/corpus/from_test_parse_error_6

@@ -0,0 +1 @@
+metric{label=bla} 3.14

text/fuzz/corpus/from_test_parse_error_7

@@ -0,0 +1,3 @@
+
+# TYPE metric summary
+metric{quantile="bla"} 3.14

text/fuzz/corpus/from_test_parse_error_8

@@ -0,0 +1 @@
+metric{label="bla"+} 3.14

text/fuzz/corpus/from_test_parse_error_9

@@ -0,0 +1 @@
+metric{label="bla"} 3.14 2.72

text/fuzz/corpus/minimal

@@ -0,0 +1 @@
+m{} 0