X-Git-Url: http://git.ozlabs.org/?p=ccan;a=blobdiff_plain;f=tools%2Fccanlint%2Flicenses.c;h=45684974f528a506ef2a7be9b09db2ea877ce434;hp=9bfa1d2b8d57b3bb005fccc653ba4d209cebf5c8;hb=dc8042b42500f79f613b1197df6cdf739615a89f;hpb=e67de75f0d64096956ad40ecb09462dac6fc5f03

diff --git a/tools/ccanlint/licenses.c b/tools/ccanlint/licenses.c
index 9bfa1d2b..45684974 100644
--- a/tools/ccanlint/licenses.c
+++ b/tools/ccanlint/licenses.c
@@ -1,7 +1,8 @@
 #include "licenses.h"
 #include "ccanlint.h"
-#include <ccan/talloc/talloc.h>
 #include <ccan/str/str.h>
+#include <ccan/tal/tal.h>
+#include <ccan/tal/str/str.h>
 
 const struct license_info licenses[] = {
 	{ "LGPLv2+", "LGPL",
@@ -64,6 +65,12 @@ const struct license_info licenses[] = {
 	    "without warranty"
 	  }
 	},
+	{ "CC0", "CC0",
+	  { "Waiver.",
+	    "unconditionally waives",
+	    NULL
+	  }
+	},
 	{ "Public domain", "Public domain",
 	  { NULL, NULL, NULL  }
 	},
@@ -72,13 +79,98 @@ const struct license_info licenses[] = {
 	},
 };
 
+/* License compatibilty chart (simplified: we don't test that licenses between
+ * files are compatible). */
+#define O true
+#define X false
+bool license_compatible[LICENSE_UNKNOWN+1][LICENSE_UNKNOWN] = {
+/*     LGPL2+   LGPL3   GPL2+   GPL3     BSD     CC0
+            LGPL2    LGPL   GPL2     GPL     MIT     PD   */
+/* _info says: LGPL2+ */
+	{ O,  X,  X,  O,  X,  X,  X,  X,  O,  O,  O,  O },
+/* _info says: LGPL2 only */
+	{ O,  O,  X,  O,  X,  X,  X,  X,  O,  O,  O,  O },
+/* _info says: LGPL3 (or any later version) */
+	{ O,  X,  O,  O,  X,  X,  X,  X,  O,  O,  O,  O },
+/* _info says: LGPL (no version specified) */
+	{ O,  O,  O,  O,  X,  X,  X,  X,  O,  O,  O,  O },
+/* _info says: GPL2+ */
+	{ O,  O,  O,  O,  O,  X,  X,  O,  O,  O,  O,  O },
+/* _info says: GPL2 only */
+	{ O,  O,  O,  O,  O,  O,  X,  O,  O,  O,  O,  O },
+/* _info says: GPL3 (or any later version) */
+	{ O,  O,  O,  O,  O,  X,  O,  O,  O,  O,  O,  O },
+/* _info says: GPL (unknown version) */
+	{ O,  O,  O,  O,  O,  O,  O,  O,  O,  O,  O,  O },
+/* _info says: BSD (3-clause) */
+	{ X,  X,  X,  X,  X,  X,  X,  X,  O,  O,  O,  O },
+/* _info says: MIT */
+	{ X,  X,  X,  X,  X,  X,  X,  X,  X,  O,  O,  O },
+/* _info says: CC0 */
+	{ X,  X,  X,  X,  X,  X,  X,  X,  X,  X,  O,  O },
+/* _info says: Public domain */
+	{ X,  X,  X,  X,  X,  X,  X,  X,  X,  X,  O,  O },
+/* _info says something we don't understand */
+	{ X,  X,  X,  X,  X,  X,  X,  X,  X,  X,  O,  O }
+};
+#undef X
+#undef O
+
+/* See GPLv2 and v2 (basically same wording) for interpreting versions:
+ * the "any later version" means the recepient can choose. */
+enum license which_license(struct doc_section *d)
+{
+	if (!d)
+		return LICENSE_UNKNOWN;
+
+	/* This means "user chooses what version", including GPLv1! */
+	if (streq(d->lines[0], "GPL"))
+		return LICENSE_GPL;
+	/* This means "v2 only". */
+	if (streq(d->lines[0], "GPLv2"))
+		return LICENSE_GPLv2;
+	/* This means "v2 or above" at user's choice. */
+	if (streq(d->lines[0], "GPL (v2 or any later version)"))
+		return LICENSE_GPLv2_PLUS;
+	/* This means "v3 or above" at user's choice. */
+	if (streq(d->lines[0], "GPL (v3 or any later version)"))
+		return LICENSE_GPLv3;
+
+	/* This means "user chooses what version" */
+	if (streq(d->lines[0], "LGPL"))
+		return LICENSE_LGPL;
+	/* This means "v2.1 only". */
+	if (streq(d->lines[0], "LGPLv2.1"))
+		return LICENSE_LGPLv2;
+	/* This means "v2.1 or above" at user's choice. */
+	if (streq(d->lines[0], "LGPL (v2.1 or any later version)"))
+		return LICENSE_LGPLv2_PLUS;
+	/* This means "v3 or above" at user's choice. */
+	if (streq(d->lines[0], "LGPL (v3 or any later version)"))
+		return LICENSE_LGPLv3;
+
+	if (streq(d->lines[0], "BSD-MIT") || streq(d->lines[0], "MIT"))
+		return LICENSE_MIT;
+	if (streq(d->lines[0], "BSD (3 clause)"))
+		return LICENSE_BSD;
+	if (streq(d->lines[0], "CC0"))
+		return LICENSE_CC0;
+	if (tal_strreg(NULL, d->lines[0], "CC0 \\([Pp]ublic [Dd]omain\\)",
+		       NULL))
+		return LICENSE_CC0;
+	if (tal_strreg(NULL, d->lines[0], "[Pp]ublic [Dd]omain"))
+		return LICENSE_PUBLIC_DOMAIN;
+
+	return LICENSE_UNKNOWN;
+}
+
 const char *get_ccan_simplified(struct ccan_file *f)
 {
 	if (!f->simplified) {
 		unsigned int i, j;
 
 		/* Simplify for easy matching: only alnum and single spaces. */
-		f->simplified = talloc_strdup(f, get_ccan_file_contents(f));
+		f->simplified = tal_strdup(f, get_ccan_file_contents(f));
 		for (i = 0, j = 0; f->simplified[i]; i++) {
 			if (cisupper(f->simplified[i]))
 				f->simplified[j++] = tolower(f->simplified[i]);
@@ -111,3 +203,16 @@ bool find_boilerplate(struct ccan_file *f, enum license license)
 	}
 	return true;
 }
+
+struct doc_section *find_license_tag(const struct manifest *m)
+{
+	struct doc_section *d;
+
+	list_for_each(get_ccan_file_docs(m->info_file), d, list) {
+		if (!streq(d->function, m->modname))
+			continue;
+		if (streq(d->type, "license"))
+			return d;
+	}
+	return NULL;
+}