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-rw-r--r--gnu/packages/patches/libxslt-generated-ids.patch173
-rw-r--r--gnu/packages/patches/libxslt-remove-date-timestamps.patch66
2 files changed, 239 insertions, 0 deletions
diff --git a/gnu/packages/patches/libxslt-generated-ids.patch b/gnu/packages/patches/libxslt-generated-ids.patch
new file mode 100644
index 0000000000..4273875c7c
--- /dev/null
+++ b/gnu/packages/patches/libxslt-generated-ids.patch
@@ -0,0 +1,173 @@
+This makes generated IDs deterministic.
+
+Written by Daniel Veillard.
+
+This should be fixed in next release (2.29).
+See https://bugzilla.gnome.org/show_bug.cgi?id=751621.
+
+diff --git a/libxslt/functions.c b/libxslt/functions.c
+index 6448bde..5b00a6d 100644
+--- a/libxslt/functions.c
++++ b/libxslt/functions.c
+@@ -651,6 +651,63 @@ xsltFormatNumberFunction(xmlXPathParserContextPtr ctxt, int nargs)
+ }
+
+ /**
++ * xsltCleanupIds:
++ * @ctxt: the transformation context
++ * @root: the root of the resulting document
++ *
++ * This clean up ids which may have been saved in Element contents
++ * by xsltGenerateIdFunction() to provide stable IDs on elements.
++ *
++ * Returns the number of items cleaned or -1 in case of error
++ */
++int
++xsltCleanupIds(xsltTransformContextPtr ctxt, xmlNodePtr root) {
++ xmlNodePtr cur;
++ int count = 0;
++
++ if ((ctxt == NULL) || (root == NULL))
++ return(-1);
++ if (root->type != XML_ELEMENT_NODE)
++ return(-1);
++
++ cur = root;
++ while (cur != NULL) {
++ if (cur->type == XML_ELEMENT_NODE) {
++ if (cur->content != NULL) {
++ cur->content = NULL;
++ count++;
++ }
++ if (cur->children != NULL) {
++ cur = cur->children;
++ continue;
++ }
++ }
++ if (cur->next != NULL) {
++ cur = cur->next;
++ continue;
++ }
++ do {
++ cur = cur->parent;
++ if (cur == NULL)
++ break;
++ if (cur == (xmlNodePtr) root) {
++ cur = NULL;
++ break;
++ }
++ if (cur->next != NULL) {
++ cur = cur->next;
++ break;
++ }
++ } while (cur != NULL);
++ }
++
++fprintf(stderr, "Attributed %d IDs for element, cleaned up %d\n",
++ ctxt->nextid, count);
++
++ return(count);
++}
++
++/**
+ * xsltGenerateIdFunction:
+ * @ctxt: the XPath Parser context
+ * @nargs: the number of arguments
+@@ -701,7 +758,39 @@ xsltGenerateIdFunction(xmlXPathParserContextPtr ctxt, int nargs){
+ if (obj)
+ xmlXPathFreeObject(obj);
+
+- val = (long)((char *)cur - (char *)&base_address);
++ /*
++ * Try to provide stable ID for generated document:
++ * - usually ID are computed to be placed on elements via attributes
++ * so using the element as the node for the ID
++ * - the cur->content should be a correct placeholder for this, we use
++ * it to hold element node numbers in xmlXPathOrderDocElems to
++ * speed up XPath too
++ * - xsltCleanupIds() clean them up before handing the XSLT output
++ * to the API client.
++ * - other nodes types use the node address method but that should
++ * not end up in resulting document ID
++ * - we can enable this by default without risk of performance issues
++ * only the one pass xsltCleanupIds() is added
++ */
++ if (cur->type == XML_ELEMENT_NODE) {
++ if (cur->content == NULL) {
++ xsltTransformContextPtr tctxt;
++
++ tctxt = xsltXPathGetTransformContext(ctxt);
++ if (tctxt == NULL) {
++ val = (long)((char *)cur - (char *)&base_address);
++ } else {
++ tctxt->nextid++;
++ val = tctxt->nextid;
++ cur->content = (void *) (val);
++ }
++ } else {
++ val = (long) cur->content;
++ }
++ } else {
++ val = (long)((char *)cur - (char *)&base_address);
++ }
++
+ if (val >= 0) {
+ sprintf((char *)str, "idp%ld", val);
+ } else {
+diff --git a/libxslt/functions.h b/libxslt/functions.h
+index e0e0bf9..4a1e163 100644
+--- a/libxslt/functions.h
++++ b/libxslt/functions.h
+@@ -64,6 +64,13 @@ XSLTPUBFUN void XSLTCALL
+ int nargs);
+
+ /*
++ * Cleanup for ID generation
++ */
++XSLTPUBFUN int XSLTCALL
++ xsltCleanupIds (xsltTransformContextPtr ctxt,
++ xmlNodePtr root);
++
++/*
+ * And the registration
+ */
+
+diff --git a/libxslt/transform.c b/libxslt/transform.c
+index 24f9eb2..2bdf6bf 100644
+--- a/libxslt/transform.c
++++ b/libxslt/transform.c
+@@ -700,6 +700,7 @@ xsltNewTransformContext(xsltStylesheetPtr style, xmlDocPtr doc) {
+ cur->traceCode = (unsigned long*) &xsltDefaultTrace;
+ cur->xinclude = xsltGetXIncludeDefault();
+ cur->keyInitLevel = 0;
++ cur->nextid = 0;
+
+ return(cur);
+
+@@ -6092,6 +6093,13 @@ xsltApplyStylesheetInternal(xsltStylesheetPtr style, xmlDocPtr doc,
+ if (root != NULL) {
+ const xmlChar *doctype = NULL;
+
++ /*
++ * cleanup ids which may have been saved in Elements content ptrs
++ */
++ if (ctxt->nextid != 0) {
++ xsltCleanupIds(ctxt, root);
++ }
++
+ if ((root->ns != NULL) && (root->ns->prefix != NULL))
+ doctype = xmlDictQLookup(ctxt->dict, root->ns->prefix, root->name);
+ if (doctype == NULL)
+diff --git a/libxslt/xsltInternals.h b/libxslt/xsltInternals.h
+index 95e8fe6..8eedae4 100644
+--- a/libxslt/xsltInternals.h
++++ b/libxslt/xsltInternals.h
+@@ -1786,6 +1786,8 @@ struct _xsltTransformContext {
+ int funcLevel; /* Needed to catch recursive functions issues */
+ int maxTemplateDepth;
+ int maxTemplateVars;
++
++ unsigned long nextid;/* for generating stable ids */
+ };
+
+ /**
diff --git a/gnu/packages/patches/libxslt-remove-date-timestamps.patch b/gnu/packages/patches/libxslt-remove-date-timestamps.patch
new file mode 100644
index 0000000000..51470d0847
--- /dev/null
+++ b/gnu/packages/patches/libxslt-remove-date-timestamps.patch
@@ -0,0 +1,66 @@
+Use deterministic SOURCE_DATE_EPOCH for embedded timestamps in generated documentation.
+
+Written by Eduard Sanou.
+
+https://bugzilla.gnome.org/show_bug.cgi?id=758148
+
+--- libxslt-1.1.28.orig/libexslt/date.c
++++ libxslt-1.1.28/libexslt/date.c
+@@ -46,6 +46,7 @@
+ #include "exslt.h"
+
+ #include <string.h>
++#include <errno.h>
+
+ #ifdef HAVE_MATH_H
+ #include <math.h>
+@@ -747,21 +748,46 @@ static exsltDateValPtr
+ exsltDateCurrent (void)
+ {
+ struct tm localTm, gmTm;
++ struct tm *tb = NULL;
+ time_t secs;
+ int local_s, gm_s;
+ exsltDateValPtr ret;
++ char *source_date_epoch;
+
+ ret = exsltDateCreateDate(XS_DATETIME);
+ if (ret == NULL)
+ return NULL;
+
+- /* get current time */
+ secs = time(NULL);
++ /*
++ * Allow the date and time to be set externally by an exported
++ * environment variable to enable reproducible builds.
++ */
++ source_date_epoch = getenv("SOURCE_DATE_EPOCH");
++ if (source_date_epoch) {
++ errno = 0;
++ secs = (time_t) strtol (source_date_epoch, NULL, 10);
++ if (errno == 0) {
++ tb = gmtime(&secs);
++ if (tb == NULL) {
++ /* SOURCE_DATE_EPOCH is not a valid date */
++ return NULL;
++ } else {
++ localTm = *tb;
++ }
++ } else {
++ /* SOURCE_DATE_EPOCH is not a valid number */
++ return NULL;
++ }
++ } else {
++ /* get current time */
+ #if HAVE_LOCALTIME_R
+- localtime_r(&secs, &localTm);
++ localtime_r(&secs, &localTm);
+ #else
+- localTm = *localtime(&secs);
++ localTm = *localtime(&secs);
+ #endif
++ }
++
+
+ /* get real year, not years since 1900 */
+ ret->value.date.year = localTm.tm_year + 1900;
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