aboutsummaryrefslogtreecommitdiff
path: root/pkg/state/header.go
diff options
context:
space:
mode:
authorJulien Dessaux2021-04-23 16:51:22 +0200
committerJulien Dessaux2021-04-23 16:51:22 +0200
commit38d9c881b3b5ece91f428c87f0b7bb9efb3e88a8 (patch)
treed3f7167fae6388f4db35a63e660d1816c9c2943e /pkg/state/header.go
parentFixed wrongfully hardcoded path in tests. (diff)
downloadbareos-zabbix-check-38d9c881b3b5ece91f428c87f0b7bb9efb3e88a8.tar.gz
bareos-zabbix-check-38d9c881b3b5ece91f428c87f0b7bb9efb3e88a8.tar.bz2
bareos-zabbix-check-38d9c881b3b5ece91f428c87f0b7bb9efb3e88a8.zip
Updated for go 1.16 modules1.2
Diffstat (limited to 'pkg/state/header.go')
-rw-r--r--pkg/state/header.go57
1 files changed, 57 insertions, 0 deletions
diff --git a/pkg/state/header.go b/pkg/state/header.go
new file mode 100644
index 0000000..ee6629b
--- /dev/null
+++ b/pkg/state/header.go
@@ -0,0 +1,57 @@
+package state
+
+import (
+ "bytes"
+ "encoding/binary"
+ "fmt"
+ "io"
+
+ "git.adyxax.org/adyxax/bareos-zabbix-check/pkg/utils"
+ "github.com/pkg/errors"
+)
+
+// c.StateFile()HeaderLength : the length of the state file header struct
+const headerLength = 14 + 2 + 4 + 4 + 8 + 8 // + 19*8
+
+// Header is a structure to hold the header of the state file. It is statically aligned for amd64 architecture
+// This comes from bareos repository file core/src/lib/bsys.cc:525 and core/src/lib/bsys.cc:652
+type Header struct {
+ ID [14]byte
+ _ int16
+ Version int32
+ _ int32
+ LastJobsAddr uint64
+ EndOfRecentJobResultsList uint64
+ //Reserved [19]uint64
+}
+
+func (sfh *Header) String() string {
+ return fmt.Sprintf("ID: \"%s\", Version: %d, LastJobsAddr: %d, EndOfRecentJobResultsList: %d",
+ string(sfh.ID[:utils.Clen(sfh.ID[:])]), sfh.Version, sfh.LastJobsAddr, sfh.EndOfRecentJobResultsList)
+}
+
+// ParseHeader parses a Header struct
+func ParseHeader(handle io.Reader) (h *Header, err error) {
+ // Parsing the state file header
+ data := make([]byte, headerLength)
+ n, err := handle.Read(data)
+ if err != nil {
+ return nil, errors.Wrap(err, "Corrupted state file")
+ }
+ if n != headerLength {
+ return nil, fmt.Errorf("Corrupted state file : invalid header length")
+ }
+ buffer := bytes.NewBuffer(data)
+ h = &Header{}
+ _ = binary.Read(buffer, binary.LittleEndian, h) // this call cannot fail since we checked the header length
+ if id := string(h.ID[:utils.Clen(h.ID[:])]); id != "Bareos State\n" && id != "Bacula State\n" {
+ return nil, fmt.Errorf("Corrupted state file : Not a bareos or bacula state file : %s", id)
+ }
+ if h.Version != 4 {
+ return nil, fmt.Errorf("Invalid state file : This script only supports bareos state file version 4, got %d", h.Version)
+ }
+ if h.LastJobsAddr == 0 {
+ return nil, fmt.Errorf("No jobs exist in the state file")
+ }
+ return
+}