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Diffstat (limited to 'src/Common/libzip/zip_source_filep.c')
-rw-r--r--src/Common/libzip/zip_source_filep.c663
1 files changed, 0 insertions, 663 deletions
diff --git a/src/Common/libzip/zip_source_filep.c b/src/Common/libzip/zip_source_filep.c
deleted file mode 100644
index 30e5991c..00000000
--- a/src/Common/libzip/zip_source_filep.c
+++ /dev/null
@@ -1,663 +0,0 @@
-/*
- zip_source_filep.c -- create data source from FILE *
- Copyright (C) 1999-2019 Dieter Baron and Thomas Klausner
-
- This file is part of libzip, a library to manipulate ZIP archives.
- The authors can be contacted at <libzip@nih.at>
-
- Redistribution and use in source and binary forms, with or without
- modification, are permitted provided that the following conditions
- are met:
- 1. Redistributions of source code must retain the above copyright
- notice, this list of conditions and the following disclaimer.
- 2. Redistributions in binary form must reproduce the above copyright
- notice, this list of conditions and the following disclaimer in
- the documentation and/or other materials provided with the
- distribution.
- 3. The names of the authors may not be used to endorse or promote
- products derived from this software without specific prior
- written permission.
-
- THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS
- OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
- WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY
- DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
- GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
- INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
- IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
- OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
- IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-*/
-
-#include <fcntl.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <sys/types.h>
-#include <sys/stat.h>
-
-#include "zipint.h"
-
-#ifdef HAVE_UNISTD_H
-#include <unistd.h>
-#endif
-
-#ifdef HAVE_CLONEFILE
-#include <sys/attr.h>
-#include <sys/clonefile.h>
-#define CAN_CLONE
-#endif
-#ifdef HAVE_FICLONERANGE
-#include <linux/fs.h>
-#include <sys/ioctl.h>
-#define CAN_CLONE
-#endif
-
-struct read_file {
- zip_error_t error; /* last error information */
- zip_int64_t supports;
-
- /* reading */
- char *fname; /* name of file to read from */
- FILE *f; /* file to read from */
- struct zip_stat st; /* stat information passed in */
- zip_error_t stat_error; /* error returned for stat */
- zip_uint64_t start; /* start offset of data to read */
- zip_uint64_t end; /* end offset of data to read relative to start, 0 for up to EOF */
- zip_uint64_t current; /* current offset relative to start (0 is beginning of part we read) */
-
- /* writing */
- char *tmpname;
- FILE *fout;
-};
-
-static zip_int64_t read_file(void *state, void *data, zip_uint64_t len, zip_source_cmd_t cmd);
-static int create_temp_output(struct read_file *ctx);
-#ifdef CAN_CLONE
-static zip_int64_t create_temp_output_cloning(struct read_file *ctx, zip_uint64_t offset);
-#endif
-static FILE *_zip_fopen(const char *name, bool writeable);
-static int _zip_fseek_u(FILE *f, zip_uint64_t offset, int whence, zip_error_t *error);
-static int _zip_fseek(FILE *f, zip_int64_t offset, int whence, zip_error_t *error);
-
-
-ZIP_EXTERN zip_source_t *
-zip_source_filep(zip_t *za, FILE *file, zip_uint64_t start, zip_int64_t len) {
- if (za == NULL)
- return NULL;
-
- return zip_source_filep_create(file, start, len, &za->error);
-}
-
-
-ZIP_EXTERN zip_source_t *
-zip_source_filep_create(FILE *file, zip_uint64_t start, zip_int64_t length, zip_error_t *error) {
- if (file == NULL || length < -1) {
- zip_error_set(error, ZIP_ER_INVAL, 0);
- return NULL;
- }
-
- return _zip_source_file_or_p(NULL, file, start, length, NULL, error);
-}
-
-
-zip_source_t *
-_zip_source_file_or_p(const char *fname, FILE *file, zip_uint64_t start, zip_int64_t len, const zip_stat_t *st, zip_error_t *error) {
- struct read_file *ctx;
- zip_source_t *zs;
- struct stat sb;
- bool stat_valid;
-
- if (file == NULL && fname == NULL) {
- zip_error_set(error, ZIP_ER_INVAL, 0);
- return NULL;
- }
-
- if (len < 0) {
- len = 0;
- }
-
- if (start > ZIP_INT64_MAX || start + (zip_uint64_t)len < start) {
- zip_error_set(error, ZIP_ER_INVAL, 0);
- return NULL;
- }
-
- if ((ctx = (struct read_file *)malloc(sizeof(struct read_file))) == NULL) {
- zip_error_set(error, ZIP_ER_MEMORY, 0);
- return NULL;
- }
-
- ctx->fname = NULL;
- if (fname) {
- if ((ctx->fname = strdup(fname)) == NULL) {
- zip_error_set(error, ZIP_ER_MEMORY, 0);
- free(ctx);
- return NULL;
- }
- }
- ctx->f = file;
- ctx->start = start;
- ctx->end = (zip_uint64_t)len;
- if (st) {
- memcpy(&ctx->st, st, sizeof(ctx->st));
- ctx->st.name = NULL;
- ctx->st.valid &= ~ZIP_STAT_NAME;
- }
- else {
- zip_stat_init(&ctx->st);
- }
-
- if (ctx->end > 0) {
- ctx->st.size = ctx->end;
- ctx->st.valid |= ZIP_STAT_SIZE;
- }
-
- zip_error_init(&ctx->stat_error);
-
- ctx->tmpname = NULL;
- ctx->fout = NULL;
-
- zip_error_init(&ctx->error);
-
- ctx->supports = ZIP_SOURCE_SUPPORTS_READABLE | zip_source_make_command_bitmap(ZIP_SOURCE_SUPPORTS, ZIP_SOURCE_TELL, -1);
-
- if (ctx->fname) {
- stat_valid = stat(ctx->fname, &sb) >= 0;
-
- if (!stat_valid) {
- if (ctx->start == 0 && ctx->end == 0) {
- ctx->supports = ZIP_SOURCE_SUPPORTS_WRITABLE;
- }
- }
- }
- else {
- stat_valid = fstat(fileno(ctx->f), &sb) >= 0;
- }
-
- if (!stat_valid) {
- zip_error_set(&ctx->stat_error, ZIP_ER_READ, errno);
- }
- else {
- if ((ctx->st.valid & ZIP_STAT_MTIME) == 0) {
- ctx->st.mtime = sb.st_mtime;
- ctx->st.valid |= ZIP_STAT_MTIME;
- }
- if (S_ISREG(sb.st_mode)) {
- ctx->supports = ZIP_SOURCE_SUPPORTS_SEEKABLE;
-
- if (ctx->start + ctx->end > (zip_uint64_t)sb.st_size) {
- zip_error_set(error, ZIP_ER_INVAL, 0);
- free(ctx->fname);
- free(ctx);
- return NULL;
- }
-
- if (ctx->end == 0) {
- ctx->st.size = (zip_uint64_t)sb.st_size - ctx->start;
- ctx->st.valid |= ZIP_STAT_SIZE;
-
- if (ctx->fname && start == 0) {
- ctx->supports = ZIP_SOURCE_SUPPORTS_WRITABLE;
- }
- }
- }
- }
-
- ctx->supports |= ZIP_SOURCE_MAKE_COMMAND_BITMASK(ZIP_SOURCE_ACCEPT_EMPTY);
-#ifdef CAN_CLONE
- if (ctx->supports & ZIP_SOURCE_MAKE_COMMAND_BITMASK(ZIP_SOURCE_BEGIN_WRITE)) {
- ctx->supports |= ZIP_SOURCE_MAKE_COMMAND_BITMASK(ZIP_SOURCE_BEGIN_WRITE_CLONING);
- }
-#endif
-
- if ((zs = zip_source_function_create(read_file, ctx, error)) == NULL) {
- free(ctx->fname);
- free(ctx);
- return NULL;
- }
-
- return zs;
-}
-
-
-static int
-create_temp_output(struct read_file *ctx) {
- char *temp;
- int tfd;
- int mode;
- FILE *tfp;
- struct stat st;
-
- if ((temp = (char *)malloc(strlen(ctx->fname) + 8)) == NULL) {
- zip_error_set(&ctx->error, ZIP_ER_MEMORY, 0);
- return -1;
- }
-
- if (stat(ctx->fname, &st) == 0) {
- mode = st.st_mode;
- }
- else {
- mode = -1;
- }
-
- sprintf(temp, "%s.XXXXXX", ctx->fname);
-
- if ((tfd = _zip_mkstempm(temp, mode)) == -1) {
- zip_error_set(&ctx->error, ZIP_ER_TMPOPEN, errno);
- free(temp);
- return -1;
- }
-
- if ((tfp = fdopen(tfd, "r+b")) == NULL) {
- zip_error_set(&ctx->error, ZIP_ER_TMPOPEN, errno);
- close(tfd);
- (void)remove(temp);
- free(temp);
- return -1;
- }
-
- ctx->fout = tfp;
- ctx->tmpname = temp;
-
- return 0;
-}
-
-#ifdef CAN_CLONE
-zip_int64_t static create_temp_output_cloning(struct read_file *ctx, zip_uint64_t offset) {
- char *temp;
- FILE *tfp;
-
- if (offset > ZIP_OFF_MAX) {
- zip_error_set(&ctx->error, ZIP_ER_SEEK, E2BIG);
- return -1;
- }
-
- if ((temp = (char *)malloc(strlen(ctx->fname) + 8)) == NULL) {
- zip_error_set(&ctx->error, ZIP_ER_MEMORY, 0);
- return -1;
- }
- sprintf(temp, "%s.XXXXXX", ctx->fname);
-
-#ifdef HAVE_CLONEFILE
-#ifndef __clang_analyzer__
- /* we can't use mkstemp, since clonefile insists on creating the file */
- if (mktemp(temp) == NULL) {
- zip_error_set(&ctx->error, ZIP_ER_TMPOPEN, errno);
- free(temp);
- return -1;
- }
-#endif
-
- if (clonefile(ctx->fname, temp, 0) < 0) {
- zip_error_set(&ctx->error, ZIP_ER_TMPOPEN, errno);
- free(temp);
- return -1;
- }
- if ((tfp = _zip_fopen(temp, true)) == NULL) {
- zip_error_set(&ctx->error, ZIP_ER_TMPOPEN, errno);
- (void)remove(temp);
- free(temp);
- return -1;
- }
-#else
- {
- int fd;
- struct file_clone_range range;
- struct stat st;
-
- if (fstat(fileno(ctx->f), &st) < 0) {
- zip_error_set(&ctx->error, ZIP_ER_TMPOPEN, errno);
- return -1;
- }
-
- if ((fd = mkstemp(temp)) < 0) {
- zip_error_set(&ctx->error, ZIP_ER_TMPOPEN, errno);
- free(temp);
- return -1;
- }
-
- range.src_fd = fileno(ctx->f);
- range.src_offset = 0;
- range.src_length = ((offset + st.st_blksize - 1) / st.st_blksize) * st.st_blksize;
- if (range.src_length > st.st_size) {
- range.src_length = 0;
- }
- range.dest_offset = 0;
- if (ioctl(fd, FICLONERANGE, &range) < 0) {
- zip_error_set(&ctx->error, ZIP_ER_TMPOPEN, errno);
- (void)close(fd);
- (void)remove(temp);
- free(temp);
- return -1;
- }
-
- if ((tfp = fdopen(fd, "r+b")) == NULL) {
- zip_error_set(&ctx->error, ZIP_ER_TMPOPEN, errno);
- (void)close(fd);
- (void)remove(temp);
- free(temp);
- return -1;
- }
- }
-#endif
-
- if (ftruncate(fileno(tfp), (off_t)offset) < 0) {
- (void)fclose(tfp);
- (void)remove(temp);
- free(temp);
- return -1;
- }
- if (fseeko(tfp, (off_t)offset, SEEK_SET) < 0) {
- (void)fclose(tfp);
- (void)remove(temp);
- free(temp);
- zip_error_set(&ctx->error, ZIP_ER_TMPOPEN, errno);
- }
-
- ctx->fout = tfp;
- ctx->tmpname = temp;
-
- return 0;
-}
-#endif
-
-
-static zip_int64_t
-read_file(void *state, void *data, zip_uint64_t len, zip_source_cmd_t cmd) {
- struct read_file *ctx;
- char *buf;
- zip_uint64_t n;
- size_t i;
-
- ctx = (struct read_file *)state;
- buf = (char *)data;
-
- switch (cmd) {
- case ZIP_SOURCE_ACCEPT_EMPTY:
- return 0;
-
- case ZIP_SOURCE_BEGIN_WRITE:
-#ifdef _WIN32
- return -1;
-#else
- if (ctx->fname == NULL) {
- zip_error_set(&ctx->error, ZIP_ER_OPNOTSUPP, 0);
- return -1;
- }
- return create_temp_output(ctx);
-#endif
-
-#ifdef CAN_CLONE
- case ZIP_SOURCE_BEGIN_WRITE_CLONING:
- if (ctx->fname == NULL) {
- zip_error_set(&ctx->error, ZIP_ER_OPNOTSUPP, 0);
- return -1;
- }
- return create_temp_output_cloning(ctx, len);
-#endif
-
- case ZIP_SOURCE_CLOSE:
- if (ctx->fname) {
- fclose(ctx->f);
- ctx->f = NULL;
- }
- return 0;
-
- case ZIP_SOURCE_COMMIT_WRITE: {
- if (fclose(ctx->fout) < 0) {
- ctx->fout = NULL;
- zip_error_set(&ctx->error, ZIP_ER_WRITE, errno);
- }
- ctx->fout = NULL;
- if (rename(ctx->tmpname, ctx->fname) < 0) {
- zip_error_set(&ctx->error, ZIP_ER_RENAME, errno);
- return -1;
- }
- free(ctx->tmpname);
- ctx->tmpname = NULL;
- return 0;
- }
-
- case ZIP_SOURCE_ERROR:
- return zip_error_to_data(&ctx->error, data, len);
-
- case ZIP_SOURCE_FREE:
- free(ctx->fname);
- free(ctx->tmpname);
- if (ctx->f)
- fclose(ctx->f);
- free(ctx);
- return 0;
-
- case ZIP_SOURCE_OPEN:
- if (ctx->fname) {
- if ((ctx->f = _zip_fopen(ctx->fname, false)) == NULL) {
- zip_error_set(&ctx->error, ZIP_ER_OPEN, errno);
- return -1;
- }
- }
-
- if (ctx->start > 0) {
- if (_zip_fseek_u(ctx->f, ctx->start, SEEK_SET, &ctx->error) < 0) {
- /* TODO: skip by reading */
- return -1;
- }
- }
- ctx->current = 0;
- return 0;
-
- case ZIP_SOURCE_READ:
- if (ctx->end > 0) {
- n = ctx->end - ctx->current;
- if (n > len) {
- n = len;
- }
- }
- else {
- n = len;
- }
-
- if (n > SIZE_MAX)
- n = SIZE_MAX;
-
- if ((i = fread(buf, 1, (size_t)n, ctx->f)) == 0) {
- if (ferror(ctx->f)) {
- zip_error_set(&ctx->error, ZIP_ER_READ, errno);
- return -1;
- }
- }
- ctx->current += i;
-
- return (zip_int64_t)i;
-
- case ZIP_SOURCE_REMOVE:
- if (remove(ctx->fname) < 0) {
- zip_error_set(&ctx->error, ZIP_ER_REMOVE, errno);
- return -1;
- }
- return 0;
-
- case ZIP_SOURCE_ROLLBACK_WRITE:
- if (ctx->fout) {
- fclose(ctx->fout);
- ctx->fout = NULL;
- }
- (void)remove(ctx->tmpname);
- free(ctx->tmpname);
- ctx->tmpname = NULL;
- return 0;
-
- case ZIP_SOURCE_SEEK: {
- zip_int64_t new_current;
- int need_seek;
- zip_source_args_seek_t *args = ZIP_SOURCE_GET_ARGS(zip_source_args_seek_t, data, len, &ctx->error);
-
- if (args == NULL)
- return -1;
-
- need_seek = 1;
-
- switch (args->whence) {
- case SEEK_SET:
- new_current = args->offset;
- break;
-
- case SEEK_END:
- if (ctx->end == 0) {
- if (_zip_fseek(ctx->f, args->offset, SEEK_END, &ctx->error) < 0) {
- return -1;
- }
- if ((new_current = ftello(ctx->f)) < 0) {
- zip_error_set(&ctx->error, ZIP_ER_SEEK, errno);
- return -1;
- }
- new_current -= (zip_int64_t)ctx->start;
- need_seek = 0;
- }
- else {
- new_current = (zip_int64_t)ctx->end + args->offset;
- }
- break;
-
- case SEEK_CUR:
- new_current = (zip_int64_t)ctx->current + args->offset;
- break;
-
- default:
- zip_error_set(&ctx->error, ZIP_ER_INVAL, 0);
- return -1;
- }
-
- if (new_current < 0 || (ctx->end != 0 && (zip_uint64_t)new_current > ctx->end) || (zip_uint64_t)new_current + ctx->start < ctx->start) {
- zip_error_set(&ctx->error, ZIP_ER_INVAL, 0);
- return -1;
- }
-
- ctx->current = (zip_uint64_t)new_current;
-
- if (need_seek) {
- if (_zip_fseek_u(ctx->f, ctx->current + ctx->start, SEEK_SET, &ctx->error) < 0) {
- return -1;
- }
- }
- return 0;
- }
-
- case ZIP_SOURCE_SEEK_WRITE: {
- zip_source_args_seek_t *args;
-
- args = ZIP_SOURCE_GET_ARGS(zip_source_args_seek_t, data, len, &ctx->error);
- if (args == NULL) {
- return -1;
- }
-
- if (_zip_fseek(ctx->fout, args->offset, args->whence, &ctx->error) < 0) {
- return -1;
- }
- return 0;
- }
-
- case ZIP_SOURCE_STAT: {
- if (len < sizeof(ctx->st))
- return -1;
-
- if (zip_error_code_zip(&ctx->stat_error) != 0) {
- zip_error_set(&ctx->error, zip_error_code_zip(&ctx->stat_error), zip_error_code_system(&ctx->stat_error));
- return -1;
- }
-
- memcpy(data, &ctx->st, sizeof(ctx->st));
- return sizeof(ctx->st);
- }
-
- case ZIP_SOURCE_SUPPORTS:
- return ctx->supports;
-
- case ZIP_SOURCE_TELL:
- return (zip_int64_t)ctx->current;
-
- case ZIP_SOURCE_TELL_WRITE: {
- off_t ret = ftello(ctx->fout);
-
- if (ret < 0) {
- zip_error_set(&ctx->error, ZIP_ER_TELL, errno);
- return -1;
- }
- return ret;
- }
-
- case ZIP_SOURCE_WRITE: {
- size_t ret;
-
- clearerr(ctx->fout);
- ret = fwrite(data, 1, len, ctx->fout);
- if (ret != len || ferror(ctx->fout)) {
- zip_error_set(&ctx->error, ZIP_ER_WRITE, errno);
- return -1;
- }
-
- return (zip_int64_t)ret;
- }
-
- default:
- zip_error_set(&ctx->error, ZIP_ER_OPNOTSUPP, 0);
- return -1;
- }
-}
-
-
-static int
-_zip_fseek_u(FILE *f, zip_uint64_t offset, int whence, zip_error_t *error) {
- if (offset > ZIP_INT64_MAX) {
- zip_error_set(error, ZIP_ER_SEEK, EOVERFLOW);
- return -1;
- }
- return _zip_fseek(f, (zip_int64_t)offset, whence, error);
-}
-
-
-static int
-_zip_fseek(FILE *f, zip_int64_t offset, int whence, zip_error_t *error) {
- if (offset > ZIP_FSEEK_MAX || offset < ZIP_FSEEK_MIN) {
- zip_error_set(error, ZIP_ER_SEEK, EOVERFLOW);
- return -1;
- }
- if (fseeko(f, (off_t)offset, whence) < 0) {
- zip_error_set(error, ZIP_ER_SEEK, errno);
- return -1;
- }
- return 0;
-}
-
-
-/*
- * fopen replacement that sets the close-on-exec flag
- * some implementations support an fopen 'e' flag for that,
- * but e.g. macOS doesn't.
- */
-static FILE *
-_zip_fopen(const char *name, bool writeable)
-{
- int fd;
- int flags;
- FILE *fp;
-
- flags = O_CLOEXEC;
- if (writeable) {
- flags |= O_RDWR;
- }
- else {
- flags |= O_RDONLY;
- }
-
- /* mode argument needed on Windows */
- if ((fd = open(name, flags, 0666)) < 0) {
- return NULL;
- }
- if ((fp = fdopen(fd, writeable ? "r+b" : "rb")) == NULL) {
- return NULL;
- }
- return fp;
-}