json: Add origins fields to version

Provide access to the origins of a package, such that tools
can display information about them; for example, you can write
a hook counting security upgrades.

apt-private/private-json-hooks.cc

@@ -198,6 +198,33 @@ class APT_HIDDEN JsonWriter
    }
 };
 
+/**
+ * @brief Write a VerFileIterator to a JsonWriter
+ */
+static void verFiletoJson(JsonWriter &writer, CacheFile &, pkgCache::VerFileIterator const &vf)
+{
+   auto pf = vf.File(); // Packages file
+   auto rf = pf.ReleaseFile(); // release file
+
+   writer.beginObject();
+   if (not rf.end()) {
+      if (rf->Archive != 0)
+	 writer.name("archive").value(rf.Archive());
+      if (rf->Codename != 0)
+	 writer.name("codename").value(rf.Codename());
+      if (rf->Version != 0)
+	 writer.name("version").value(rf.Version());
+      if (rf->Origin != 0)
+	 writer.name("origin").value(rf.Origin());
+      if (rf->Label != 0)
+	 writer.name("label").value(rf.Label());
+      if (rf->Site != 0)
+	 writer.name("site").value(rf.Site());
+   }
+
+   writer.endObject();
+}
+
 /**
  * @brief Write a VerIterator to a JsonWriter
  */
@@ -208,6 +235,14 @@ static void verIterToJson(JsonWriter &writer, CacheFile &Cache, pkgCache::VerIte
    writer.name("version").value(Ver.VerStr());
    writer.name("architecture").value(Ver.Arch());
    writer.name("pin").value(Cache->GetPolicy().GetPriority(Ver));
+
+   writer.name("origins");
+   writer.beginArray();
+   for (auto vf = Ver.FileList(); !vf.end(); vf++)
+      if ((vf.File()->Flags & pkgCache::Flag::NotSource) == 0)
+         verFiletoJson(writer, Cache, vf);
+   writer.endArray();
+
    writer.endObject();
 }
 

doc/json-hooks-protocol.md

@@ -106,6 +106,16 @@ install. Each package has the following attributes:
   - *version*: The version as a string
   - *architecture*: Architecture of the version
   - *pin*: The pin priority (optional)
+  - *origins*: Sources from which the package is retrieved (optional, not in older versions)
+
+  Each origin is represented as an object with the following fields:
+
+  - *archive*: string (optional)
+  - *codename*: string (optional)
+  - *version*: string (optional)
+  - *origin*: string (optional)
+  - *label*: string (optional)
+  - *site*: string, empty for local repositories or when using mirror+file:/ method (optional)
 
 #### Example
 

test/integration/test-apt-cli-json-hooks

@@ -4,6 +4,10 @@ set -e
 TESTDIR="$(readlink -f "$(dirname "$0")")"
 . "$TESTDIR/framework"
 
+getoriginfromsuite() { echo 'Oranges'; }
+getlabelfromsuite() { echo 'Lemons'; }
+getversionfromsuite() { echo 'Volkamer'; }
+
 setupenvironment
 configarchitecture "i386"
 
@@ -107,18 +111,18 @@ Building dependency tree...
 HOOK: HELLO
 HOOK: request {"jsonrpc":"2.0","method":"org.debian.apt.hooks.hello","id":0,"params":{"versions":["0.1"]}}
 HOOK: empty
-HOOK: request {"jsonrpc":"2.0","method":"org.debian.apt.hooks.install.pre-prompt","params":{"command":"install","search-terms":["foo"],"unknown-packages":[],"packages":[{"id":1,"name":"foo","architecture":"i386","mode":"install","automatic":false,"versions":{"candidate":{"id":1,"version":"1.0","architecture":"all","pin":500},"install":{"id":1,"version":"1.0","architecture":"all","pin":500}}}]}}
+HOOK: request {"jsonrpc":"2.0","method":"org.debian.apt.hooks.install.pre-prompt","params":{"command":"install","search-terms":["foo"],"unknown-packages":[],"packages":[{"id":1,"name":"foo","architecture":"i386","mode":"install","automatic":false,"versions":{"candidate":{"id":1,"version":"1.0","architecture":"all","pin":500,"origins":[{"archive":"unstable","codename":"sid","origin":"Oranges","label":"Lemons","site":""}]},"install":{"id":1,"version":"1.0","architecture":"all","pin":500,"origins":[{"archive":"unstable","codename":"sid","origin":"Oranges","label":"Lemons","site":""}]}}}]}}
 HOOK: empty
 HOOK: BYE
 The following NEW packages will be installed:
   foo
 0 upgraded, 1 newly installed, 0 to remove and 0 not upgraded.
-Inst foo (1.0 unstable [all])
-Conf foo (1.0 unstable [all])
+Inst foo (1.0 Lemons:unstable [all])
+Conf foo (1.0 Lemons:unstable [all])
 HOOK: HELLO
 HOOK: request {"jsonrpc":"2.0","method":"org.debian.apt.hooks.hello","id":0,"params":{"versions":["0.1"]}}
 HOOK: empty
-HOOK: request {"jsonrpc":"2.0","method":"org.debian.apt.hooks.install.post","params":{"command":"install","search-terms":["foo"],"unknown-packages":[],"packages":[{"id":1,"name":"foo","architecture":"i386","mode":"install","automatic":false,"versions":{"candidate":{"id":1,"version":"1.0","architecture":"all","pin":500},"install":{"id":1,"version":"1.0","architecture":"all","pin":500}}}]}}
+HOOK: request {"jsonrpc":"2.0","method":"org.debian.apt.hooks.install.post","params":{"command":"install","search-terms":["foo"],"unknown-packages":[],"packages":[{"id":1,"name":"foo","architecture":"i386","mode":"install","automatic":false,"versions":{"candidate":{"id":1,"version":"1.0","architecture":"all","pin":500,"origins":[{"archive":"unstable","codename":"sid","origin":"Oranges","label":"Lemons","site":""}]},"install":{"id":1,"version":"1.0","architecture":"all","pin":500,"origins":[{"archive":"unstable","codename":"sid","origin":"Oranges","label":"Lemons","site":""}]}}}]}}
 HOOK: empty
 HOOK: BYE' apt install foo -s
 
@@ -203,8 +207,8 @@ Building dependency tree...
 The following NEW packages will be installed:
   foo
 0 upgraded, 1 newly installed, 0 to remove and 0 not upgraded.
-Inst foo (1.0 unstable [all])
-Conf foo (1.0 unstable [all])' apt install foo -s
+Inst foo (1.0 Lemons:unstable [all])
+Conf foo (1.0 Lemons:unstable [all])' apt install foo -s