Patch errors

RELEASE_NOTES.md

@@ -7,6 +7,7 @@ This file contains a high-level description of this package's evolution. Release
 
 ## 4.8.2 - TBD
 
+* [Bug Fix] Apply patches for ezxml and for selected  oss-fuzz detected errors. See [Github #2125](https://github.com/Unidata/netcdf-c/pull/2125).
 * [Bug Fix] Ensure that internal Fortran APIs are always defined. See [Github #2098](https://github.com/Unidata/netcdf-c/pull/2098).
 * [Enhancement] Support filters for NCZarr. See [Github #2101](https://github.com/Unidata/netcdf-c/pull/2101)
 * [Bug Fix] Make PR 2075 long file name be idempotent. See [Github #2094](https://github.com/Unidata/netcdf-c/pull/2094).

include/Makefile.am

@@ -20,7 +20,7 @@ nc4internal.h nctime.h nc3internal.h onstack.h ncrc.h ncauth.h		\
 ncoffsets.h nctestserver.h nc4dispatch.h nc3dispatch.h ncexternl.h	\
 ncpathmgr.h ncindex.h hdf4dispatch.h hdf5internal.h nc_provenance.h	\
 hdf5dispatch.h ncmodel.h isnan.h nccrc.h ncexhash.h ncxcache.h          \
-ncfilter.h ncjson.h
+ncfilter.h ncjson.h ezxml.h
 
 if USE_DAP
 noinst_HEADERS += ncdap.h

libdap4/ezxml.h → include/ezxml.h

@@ -57,69 +57,74 @@ struct ezxml {
 /* structure. For efficiency, modifies the data by adding null terminators*/
 /* and decoding ampersand sequences. If you don't want this, copy the data and*/
 /* pass in the copy. Returns NULL on failure.*/
-ezxml_t ezxml_parse_str(char *s, size_t len);
-
-/* A wrapper for ezxml_parse_str() that accepts a file descriptor. First*/
-/* attempts to mem map the file. Failing that, reads the file into memory.*/
-/* Returns NULL on failure.*/
-ezxml_t ezxml_parse_fd(int fd);
-
-/* a wrapper for ezxml_parse_fd() that accepts a file name*/
-ezxml_t ezxml_parse_file(const char *file);
-
-/* Wrapper for ezxml_parse_str() that accepts a file stream. Reads the entire*/
-/* stream into memory and then parses it. For xml files, use ezxml_parse_file()*/
-/* or ezxml_parse_fd()*/
-ezxml_t ezxml_parse_fp(FILE *fp);
+ezxml_t nc_ezxml_parse_str(char *s, size_t len);
 
 /* returns the first child tag (one level deeper) with the given name or NULL*/
 /* if not found*/
-ezxml_t ezxml_child(ezxml_t xml, const char *name);
+ezxml_t nc_ezxml_child(ezxml_t xml, const char *name);
 
 /* returns the next tag of the same name in the same section and depth or NULL*/
 /* if not found*/
-#define ezxml_next(xml) ((xml) ? xml->next : NULL)
+#define nc_ezxml_next(xml) ((xml) ? (xml)->next : NULL)
 
 /* Returns the Nth tag with the same name in the same section at the same depth*/
 /* or NULL if not found. An index of 0 returns the tag given.*/
-ezxml_t ezxml_idx(ezxml_t xml, int idx);
+ezxml_t nc_ezxml_idx(ezxml_t xml, int idx);
 
 /* returns the name of the given tag*/
-#define ezxml_name(xml) ((xml) ? xml->name : NULL)
+#define nc_ezxml_name(xml) ((xml) ? xml->name : NULL)
 
 /* returns the given tag's character content or empty string if none*/
-#define ezxml_txt(xml) ((xml) ? xml->txt : "")
+#define nc_ezxml_txt(xml) ((xml) ? xml->txt : "")
 
 /* returns the value of the requested tag attribute, or NULL if not found*/
-const char *ezxml_attr(ezxml_t xml, const char *attr);
+const char *nc_ezxml_attr(ezxml_t xml, const char *attr);
 
 /* Traverses the ezxml structure to retrieve a specific subtag. Takes a*/
 /* variable length list of tag names and indexes. The argument list must be*/
 /* terminated by either an index of -1 or an empty string tag name. Example: */
 /* title = ezxml_get(library, "shelf", 0, "book", 2, "title", -1);*/
 /* This retrieves the title of the 3rd book on the 1st shelf of library.*/
 /* Returns NULL if not found.*/
-ezxml_t ezxml_get(ezxml_t xml, ...);
+ezxml_t nc_ezxml_get(ezxml_t xml, ...);
 
 /* Converts an ezxml structure back to xml. Returns a string of xml data that*/
 /* must be freed.*/
-char *ezxml_toxml(ezxml_t xml);
+char *nc_ezxml_toxml(ezxml_t xml);
 
 /* returns a NULL terminated array of processing instructions for the given*/
 /* target*/
-const char **ezxml_pi(ezxml_t xml, const char *target);
+const char **nc_ezxml_pi(ezxml_t xml, const char *target);
 
 /* frees the memory allocated for an ezxml structure*/
-void ezxml_free(ezxml_t xml);
+void nc_ezxml_free(ezxml_t xml);
 
 /* returns parser error message or empty string if none*/
-const char *ezxml_error(ezxml_t xml);
+const char *nc_ezxml_error(ezxml_t xml);
+
+const char** nc_ezxml_all_attr(ezxml_t xml, int* countp);
+
+
+#if 0
 
 /* returns a new empty ezxml structure with the given root tag name*/
-ezxml_t ezxml_new(const char *name);
+ezxml_t nc_ezxml_new(const char *name);
 
 /* wrapper for ezxml_new() that strdup()s name*/
-#define ezxml_new_d(name) ezxml_set_flag(ezxml_new(strdup(name)), EZXML_NAMEM)
+#define nc_ezxml_new_d(name) ezxml_set_flag(ezxml_new(strdup(name)), EZXML_NAMEM)
+
+/* A wrapper for ezxml_parse_str() that accepts a file descriptor. First*/
+/* attempts to mem map the file. Failing that, reads the file into memory.*/
+/* Returns NULL on failure.*/
+ezxml_t ezxml_parse_fd(int fd);
+
+/* a wrapper for ezxml_parse_fd() that accepts a file name*/
+ezxml_t ezxml_parse_file(const char *file);
+
+/* Wrapper for ezxml_parse_str() that accepts a file stream. Reads the entire*/
+/* stream into memory and then parses it. For xml files, use ezxml_parse_file()*/
+/* or ezxml_parse_fd()*/
+ezxml_t ezxml_parse_fp(FILE *fp);
 
 /* Adds a child tag. off is the offset of the child tag relative to the start*/
 /* of the parent tag's character content. Returns the child tag.*/
@@ -160,6 +165,8 @@ ezxml_t ezxml_insert(ezxml_t xml, ezxml_t dest, size_t off);
 /* removes a tag along with all its subtags*/
 #define ezxml_remove(xml) ezxml_free(ezxml_cut(xml))
 
+#endif /*0*/
+
 #ifdef __cplusplus
 }
 #endif

libdap4/CMakeLists.txt

@@ -4,7 +4,7 @@
 # University Corporation for Atmospheric Research/Unidata.
 
 # See netcdf-c/COPYRIGHT file for more info.
-SET(dap4_SOURCES d4curlfunctions.c d4fix.c d4data.c d4file.c d4parser.c d4meta.c d4varx.c d4dump.c d4swap.c d4chunk.c d4printer.c d4read.c d4http.c d4util.c d4odom.c d4cvt.c d4debug.c ncd4dispatch.c ezxml_extra.c ezxml.c)
+SET(dap4_SOURCES d4curlfunctions.c d4fix.c d4data.c d4file.c d4parser.c d4meta.c d4varx.c d4dump.c d4swap.c d4chunk.c d4printer.c d4read.c d4http.c d4util.c d4odom.c d4cvt.c d4debug.c ncd4dispatch.c)
 
 add_library(dap4 OBJECT ${dap4_SOURCES})
 

libdap4/Makefile.am

@@ -35,9 +35,7 @@ d4util.c \
 d4odom.c \
 d4cvt.c \
 d4debug.c \
-ncd4dispatch.c \
-ezxml_extra.c \
-ezxml.c
+ncd4dispatch.c
 
 HDRS= \
 ncd4dispatch.h \
@@ -51,8 +49,7 @@ d4util.h \
 d4debug.h \
 d4odom.h \
 d4bytes.h \
-d4includes.h \
-ezxml.h
+d4includes.h
 
 if ENABLE_DAP4
 if USE_NETCDF4
@@ -67,13 +64,3 @@ libdap4_la_LIBADD =
 
 endif # ENABLE_DAP4
 
-# Show what is needed to insert a new version of ezxml
-# primary fix: The original ezxml.[ch] uses '//' comments;
-# unpack and replace with '/*..*/'
-EZXML=ezxml-0.8.6.tar.gz
-ezxml::
-	rm -fr ./ezxml ./ezxml.[ch] ./license.txt
-	tar -zxf ./${EZXML}
-	sed -e 's|//\(.*\)|/*\1*/|' <ezxml/ezxml.c >./ezxml.c
-	sed -e 's|//\(.*\)|/*\1*/|' <ezxml/ezxml.h >./ezxml.h
-	cp ezxml/license.txt .