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authorMathias Kresin <dev@kresin.me>2019-01-12 19:39:33 +0100
committerMathias Kresin <dev@kresin.me>2019-01-15 19:11:53 +0100
commit18c9faa03211e29252413671610a93c00dcc7ad1 (patch)
tree61e95d4abbe40bb4b88920a9490e21d6eebe3903
parentad8c2d6099a7da5192ee6e2c52a8303642271877 (diff)
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tools: zip: add option for reproducible archives
Add the option -mt/--mtime to pass a timestamp which is used as filedate for the containing files. So far, it isn't used for anything written to the extra fields, therefore requires the -X (eXclude eXtra file attributes) parameter to be effective. Signed-off-by: Mathias Kresin <dev@kresin.me>
-rw-r--r--tools/zip/patches/011-add-option-for-reproducible-archives.patch145
1 files changed, 145 insertions, 0 deletions
diff --git a/tools/zip/patches/011-add-option-for-reproducible-archives.patch b/tools/zip/patches/011-add-option-for-reproducible-archives.patch
new file mode 100644
index 0000000000..45b9d67e15
--- /dev/null
+++ b/tools/zip/patches/011-add-option-for-reproducible-archives.patch
@@ -0,0 +1,145 @@
+From 6d659fc87451c02c8777dc33f750b16834e4c715 Mon Sep 17 00:00:00 2001
+From: Mathias Kresin <dev@kresin.me>
+Date: Sat, 12 Jan 2019 19:33:33 +0100
+Subject: [PATCH] add option for reproducible archives
+
+Add the option -mt/--mtime to pass a timestamp which is used as filedate
+for the containing files.
+
+So far, it isn't used for anything written to the extra fields,
+therefore requires the -X (eXclude eXtra file attributes) parameter to
+be effective.
+
+Signed-off-by: Mathias Kresin <dev@kresin.me>
+---
+ globals.c | 1 +
+ util.c | 22 ++++++++++++++++++++++
+ zip.c | 6 ++++++
+ zip.h | 1 +
+ zipup.c | 4 +++-
+ 5 files changed, 33 insertions(+), 1 deletion(-)
+
+--- a/globals.c
++++ b/globals.c
+@@ -205,6 +205,7 @@ uzoff_t bytes_this_split = 0; /* byt
+ int read_split_archive = 0; /* 1=scanzipf_reg detected spanning signature */
+ int split_method = 0; /* 0=no splits, 1=seekable, 2=data desc, -1=no */
+ uzoff_t split_size = 0; /* how big each split should be */
++time_t timestamp = -1; /* fixed timestamp for archive content filedate */
+ int split_bell = 0; /* when pause for next split ring bell */
+ uzoff_t bytes_prev_splits = 0; /* total bytes written to all splits before this */
+ uzoff_t bytes_this_entry = 0; /* bytes written for this entry across all splits */
+--- a/util.c
++++ b/util.c
+@@ -1217,6 +1217,7 @@ int DisplayNumString(file, i)
+ return 0;
+ }
+
++
+ /* Read numbers with trailing size multiplier (like 10M) and return number.
+ 10/30/04 EG */
+
+@@ -1279,6 +1280,29 @@ uzoff_t ReadNumString( numstring )
+ }
+
+
++uzoff_t ReadNumStringUL( numstring )
++ char *numstring;
++{
++ zoff_t num = 0;
++
++ /* check if valid number (currently no negatives) */
++ if (numstring == NULL) {
++ zipwarn("Unable to read empty number in ReadNumString", "");
++ return (uzoff_t)-1;
++ }
++ if (numstring[0] < '0' || numstring[0] > '9') {
++ zipwarn("Unable to read number (must start with digit): ", numstring);
++ return (uzoff_t)-1;
++ }
++ if (strlen(numstring) > 10) {
++ zipwarn("Number too long to read (10 characters max): ", numstring);
++ return (uzoff_t)-1;
++ }
++
++ return (uzoff_t)atoll(numstring);
++}
++
++
+ /* Write the number as a string with a multiplier (like 10M) to outstring.
+ Always writes no more than 3 digits followed maybe by a multiplier and
+ returns the characters written or -1 if error.
+--- a/zip.c
++++ b/zip.c
+@@ -1942,6 +1942,7 @@ int set_filetype(out_path)
+ #ifdef UNICODE_TEST
+ #define o_sC 0x146
+ #endif
++#define o_mt 0x255
+
+
+ /* the below is mainly from the old main command line
+@@ -2036,6 +2037,7 @@ struct option_struct far options[] = {
+ {"m", "move", o_NO_VALUE, o_NOT_NEGATABLE, 'm', "add files to archive then delete files"},
+ {"mm", "", o_NO_VALUE, o_NOT_NEGATABLE, o_mm, "not used"},
+ {"MM", "must-match", o_NO_VALUE, o_NOT_NEGATABLE, o_MM, "error if in file not matched/not readable"},
++ {"mt", "mtime", o_REQUIRED_VALUE, o_NOT_NEGATABLE, o_mt, "use fixed timestamp for archive content filedate"},
+ {"n", "suffixes", o_REQUIRED_VALUE, o_NOT_NEGATABLE, 'n', "suffixes to not compress: .gz:.zip"},
+ {"nw", "no-wild", o_NO_VALUE, o_NOT_NEGATABLE, o_nw, "no wildcards during add or update"},
+ #if defined(AMIGA) || defined(MACOS)
+@@ -2440,6 +2442,7 @@ char **argv; /* command line
+ split_method = 0; /* 0=no splits, 1=update LHs, 2=data descriptors */
+ split_size = 0; /* how big each split should be */
+ split_bell = 0; /* when pause for next split ring bell */
++ timestamp = -1; /* fixed timestamp for archive content filedate */
+ bytes_prev_splits = 0; /* total bytes written to all splits before this */
+ bytes_this_entry = 0; /* bytes written for this entry across all splits */
+ noisy_splits = 0; /* be verbose about creating splits */
+@@ -2897,6 +2900,9 @@ char **argv; /* command line
+ dispose = 1; break;
+ case o_MM: /* Exit with error if input file can't be read */
+ bad_open_is_error = 1; break;
++ case o_mt: /* fixed timestamp for archive content filedate */
++ timestamp = ReadNumStringUL(value);
++ break;
+ case 'n': /* Don't compress files with a special suffix */
+ special = value;
+ /* special = NULL; */ /* will be set at next argument */
+--- a/zip.h
++++ b/zip.h
+@@ -502,6 +502,7 @@ extern uzoff_t bytes_this_split; /* byte
+ extern int read_split_archive; /* 1=scanzipf_reg detected spanning signature */
+ extern int split_method; /* 0=no splits, 1=seekable, 2=data descs, -1=no */
+ extern uzoff_t split_size; /* how big each split should be */
++extern time_t timestamp; /* fixed timestamp for archive content filedate */
+ extern int split_bell; /* when pause for next split ring bell */
+ extern uzoff_t bytes_prev_splits; /* total bytes written to all splits before this */
+ extern uzoff_t bytes_this_entry; /* bytes written for this entry across all splits */
+@@ -789,6 +790,7 @@ char *zip_fzofft OF((zoff_t, char
+ int DisplayNumString OF ((FILE *file, uzoff_t i));
+ int WriteNumString OF((uzoff_t num, char *outstring));
+ uzoff_t ReadNumString OF((char *numstring));
++uzoff_t ReadNumStringUL OF((char *numstring));
+
+ /* returns true if abbrev is abbreviation for string */
+ int abbrevmatch OF((char *, char *, int, int));
+--- a/zipup.c
++++ b/zipup.c
+@@ -415,7 +415,6 @@ struct zlist far *z; /* zip entry to
+ char *tempextra = NULL;
+ char *tempcextra = NULL;
+
+-
+ #ifdef WINDLL
+ # ifdef ZIP64_SUPPORT
+ extern _int64 filesize64;
+@@ -441,6 +440,9 @@ struct zlist far *z; /* zip entry to
+ if (tim == 0 || q == (zoff_t) -3)
+ return ZE_OPEN;
+
++ if (timestamp > 0)
++ tim = unix2dostime(&timestamp);
++
+ /* q is set to -1 if the input file is a device, -2 for a volume label */
+ if (q == (zoff_t) -2) {
+ isdir = 1;