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-rw-r--r--apt-pkg/contrib/fileutl.cc475
1 files changed, 326 insertions, 149 deletions
diff --git a/apt-pkg/contrib/fileutl.cc b/apt-pkg/contrib/fileutl.cc
index 79bcf112c..1eabf37f4 100644
--- a/apt-pkg/contrib/fileutl.cc
+++ b/apt-pkg/contrib/fileutl.cc
@@ -1,6 +1,5 @@
// -*- mode: cpp; mode: fold -*-
// Description /*{{{*/
-// $Id: fileutl.cc,v 1.42 2002/09/14 05:29:22 jgg Exp $
/* ######################################################################
File Utilities
@@ -26,16 +25,22 @@
#include <apt-pkg/sptr.h>
#include <apt-pkg/aptconfiguration.h>
#include <apt-pkg/configuration.h>
-
+#include <apt-pkg/macros.h>
+
+#include <ctype.h>
+#include <stdarg.h>
+#include <stddef.h>
+#include <sys/select.h>
+#include <time.h>
+#include <string>
+#include <vector>
#include <cstdlib>
#include <cstring>
#include <cstdio>
-
#include <iostream>
#include <unistd.h>
#include <fcntl.h>
#include <sys/stat.h>
-#include <sys/types.h>
#include <sys/time.h>
#include <sys/wait.h>
#include <dirent.h>
@@ -52,6 +57,10 @@
#ifdef HAVE_BZ2
#include <bzlib.h>
#endif
+#ifdef HAVE_LZMA
+ #include <stdint.h>
+ #include <lzma.h>
+#endif
#ifdef WORDS_BIGENDIAN
#include <inttypes.h>
@@ -62,54 +71,6 @@
using namespace std;
-class FileFdPrivate {
- public:
-#ifdef HAVE_ZLIB
- gzFile gz;
-#else
- void* gz;
-#endif
-#ifdef HAVE_BZ2
- BZFILE* bz2;
-#else
- void* bz2;
-#endif
- int compressed_fd;
- pid_t compressor_pid;
- bool pipe;
- APT::Configuration::Compressor compressor;
- unsigned int openmode;
- unsigned long long seekpos;
- FileFdPrivate() : gz(NULL), bz2(NULL),
- compressed_fd(-1), compressor_pid(-1), pipe(false),
- openmode(0), seekpos(0) {};
- bool CloseDown(std::string const &FileName)
- {
- bool Res = true;
-#ifdef HAVE_ZLIB
- if (gz != NULL) {
- int const e = gzclose(gz);
- gz = NULL;
- // gzdclose() on empty files always fails with "buffer error" here, ignore that
- if (e != 0 && e != Z_BUF_ERROR)
- Res &= _error->Errno("close",_("Problem closing the gzip file %s"), FileName.c_str());
- }
-#endif
-#ifdef HAVE_BZ2
- if (bz2 != NULL) {
- BZ2_bzclose(bz2);
- bz2 = NULL;
- }
-#endif
- if (compressor_pid > 0)
- ExecWait(compressor_pid, "FileFdCompressor", true);
- compressor_pid = -1;
-
- return Res;
- }
- ~FileFdPrivate() { CloseDown(""); }
-};
-
// RunScripts - Run a set of scripts from a configuration subtree /*{{{*/
// ---------------------------------------------------------------------
/* */
@@ -874,6 +835,122 @@ bool ExecWait(pid_t Pid,const char *Name,bool Reap)
}
/*}}}*/
+class FileFdPrivate { /*{{{*/
+ public:
+#ifdef HAVE_ZLIB
+ gzFile gz;
+#endif
+#ifdef HAVE_BZ2
+ BZFILE* bz2;
+#endif
+#ifdef HAVE_LZMA
+ struct LZMAFILE {
+ FILE* file;
+ uint8_t buffer[4096];
+ lzma_stream stream;
+ lzma_ret err;
+ bool eof;
+ bool compressing;
+
+ LZMAFILE() : file(NULL), eof(false), compressing(false) {}
+ ~LZMAFILE() {
+ if (compressing == true)
+ {
+ for (;;) {
+ stream.avail_out = sizeof(buffer)/sizeof(buffer[0]);
+ stream.next_out = buffer;
+ err = lzma_code(&stream, LZMA_FINISH);
+ if (err != LZMA_OK && err != LZMA_STREAM_END)
+ {
+ _error->Error("~LZMAFILE: Compress finalisation failed");
+ break;
+ }
+ size_t const n = sizeof(buffer)/sizeof(buffer[0]) - stream.avail_out;
+ if (n && fwrite(buffer, 1, n, file) != n)
+ {
+ _error->Errno("~LZMAFILE",_("Write error"));
+ break;
+ }
+ if (err == LZMA_STREAM_END)
+ break;
+ }
+ }
+ lzma_end(&stream);
+ fclose(file);
+ }
+ };
+ LZMAFILE* lzma;
+#endif
+ int compressed_fd;
+ pid_t compressor_pid;
+ bool pipe;
+ APT::Configuration::Compressor compressor;
+ unsigned int openmode;
+ unsigned long long seekpos;
+ FileFdPrivate() :
+#ifdef HAVE_ZLIB
+ gz(NULL),
+#endif
+#ifdef HAVE_BZ2
+ bz2(NULL),
+#endif
+#ifdef HAVE_LZMA
+ lzma(NULL),
+#endif
+ compressed_fd(-1), compressor_pid(-1), pipe(false),
+ openmode(0), seekpos(0) {};
+ bool InternalClose(std::string const &FileName)
+ {
+ if (false)
+ /* dummy so that the rest can be 'else if's */;
+#ifdef HAVE_ZLIB
+ else if (gz != NULL) {
+ int const e = gzclose(gz);
+ gz = NULL;
+ // gzdclose() on empty files always fails with "buffer error" here, ignore that
+ if (e != 0 && e != Z_BUF_ERROR)
+ return _error->Errno("close",_("Problem closing the gzip file %s"), FileName.c_str());
+ }
+#endif
+#ifdef HAVE_BZ2
+ else if (bz2 != NULL) {
+ BZ2_bzclose(bz2);
+ bz2 = NULL;
+ }
+#endif
+#ifdef HAVE_LZMA
+ else if (lzma != NULL) {
+ delete lzma;
+ lzma = NULL;
+ }
+#endif
+ return true;
+ }
+ bool CloseDown(std::string const &FileName)
+ {
+ bool const Res = InternalClose(FileName);
+
+ if (compressor_pid > 0)
+ ExecWait(compressor_pid, "FileFdCompressor", true);
+ compressor_pid = -1;
+
+ return Res;
+ }
+ bool InternalStream() const {
+ return false
+#ifdef HAVE_BZ2
+ || bz2 != NULL
+#endif
+#ifdef HAVE_LZMA
+ || lzma != NULL
+#endif
+ ;
+ }
+
+
+ ~FileFdPrivate() { CloseDown(""); }
+};
+ /*}}}*/
// FileFd::Open - Open a file /*{{{*/
// ---------------------------------------------------------------------
/* The most commonly used open mode combinations are given with Mode */
@@ -891,7 +968,7 @@ bool FileFd::Open(string FileName,unsigned int const Mode,CompressMode Compress,
{
for (; compressor != compressors.end(); ++compressor)
{
- std::string file = std::string(FileName).append(compressor->Extension);
+ std::string file = FileName + compressor->Extension;
if (FileExists(file) == false)
continue;
FileName = file;
@@ -1061,30 +1138,12 @@ bool FileFd::OpenDescriptor(int Fd, unsigned int const Mode, APT::Configuration:
{
Close();
Flags = (AutoClose) ? FileFd::AutoClose : 0;
- if (AutoClose == false && (
-#ifdef HAVE_ZLIB
- compressor.Name == "gzip" ||
-#endif
-#ifdef HAVE_BZ2
- compressor.Name == "bzip2" ||
-#endif
- false))
- {
- // Need to duplicate fd here or gzclose for cleanup will close the fd as well
- iFd = dup(Fd);
- }
- else
- iFd = Fd;
+ iFd = Fd;
this->FileName = "";
- if (Fd == -1 || OpenInternDescriptor(Mode, compressor) == false)
+ if (OpenInternDescriptor(Mode, compressor) == false)
{
if (iFd != -1 && (
-#ifdef HAVE_ZLIB
- compressor.Name == "gzip" ||
-#endif
-#ifdef HAVE_BZ2
- compressor.Name == "bzip2" ||
-#endif
+ (Flags & Compressed) == Compressed ||
AutoClose == true))
{
close (iFd);
@@ -1096,52 +1155,121 @@ bool FileFd::OpenDescriptor(int Fd, unsigned int const Mode, APT::Configuration:
}
bool FileFd::OpenInternDescriptor(unsigned int const Mode, APT::Configuration::Compressor const &compressor)
{
+ if (iFd == -1)
+ return false;
if (compressor.Name == "." || compressor.Binary.empty() == true)
return true;
+#if defined HAVE_ZLIB || defined HAVE_BZ2 || defined HAVE_LZMA
+ // the API to open files is similar, so setup to avoid code duplicates later
+ // and while at it ensure that we close before opening (if its a reopen)
+ void* (*compress_open)(int, const char *) = NULL;
+ if (false)
+ /* dummy so that the rest can be 'else if's */;
+#define APT_COMPRESS_INIT(NAME,OPEN) \
+ else if (compressor.Name == NAME) \
+ { \
+ compress_open = (void*(*)(int, const char *)) OPEN; \
+ if (d != NULL) d->InternalClose(FileName); \
+ }
+#ifdef HAVE_ZLIB
+ APT_COMPRESS_INIT("gzip", gzdopen)
+#endif
+#ifdef HAVE_BZ2
+ APT_COMPRESS_INIT("bzip2", BZ2_bzdopen)
+#endif
+#ifdef HAVE_LZMA
+ APT_COMPRESS_INIT("xz", fdopen)
+ APT_COMPRESS_INIT("lzma", fdopen)
+#endif
+#undef APT_COMPRESS_INIT
+#endif
+
if (d == NULL)
{
d = new FileFdPrivate();
d->openmode = Mode;
d->compressor = compressor;
+#if defined HAVE_ZLIB || defined HAVE_BZ2 || defined HAVE_LZMA
+ if (AutoClose == false && compress_open != NULL)
+ {
+ // Need to duplicate fd here or gz/bz2 close for cleanup will close the fd as well
+ int const internFd = dup(iFd);
+ if (internFd == -1)
+ return FileFdErrno("OpenInternDescriptor", _("Could not open file descriptor %d"), iFd);
+ iFd = internFd;
+ }
+#endif
}
-#ifdef HAVE_ZLIB
- if (compressor.Name == "gzip")
+#if defined HAVE_ZLIB || defined HAVE_BZ2 || defined HAVE_LZMA
+ if (compress_open != NULL)
{
- if (d->gz != NULL)
- {
- gzclose(d->gz);
- d->gz = NULL;
- }
+ void* compress_struct = NULL;
if ((Mode & ReadWrite) == ReadWrite)
- d->gz = gzdopen(iFd, "r+");
+ compress_struct = compress_open(iFd, "r+");
else if ((Mode & WriteOnly) == WriteOnly)
- d->gz = gzdopen(iFd, "w");
+ compress_struct = compress_open(iFd, "w");
else
- d->gz = gzdopen(iFd, "r");
- if (d->gz == NULL)
+ compress_struct = compress_open(iFd, "r");
+ if (compress_struct == NULL)
return false;
- Flags |= Compressed;
- return true;
- }
+
+ if (false)
+ /* dummy so that the rest can be 'else if's */;
+#ifdef HAVE_ZLIB
+ else if (compressor.Name == "gzip")
+ d->gz = (gzFile) compress_struct;
#endif
#ifdef HAVE_BZ2
- if (compressor.Name == "bzip2")
- {
- if (d->bz2 != NULL)
+ else if (compressor.Name == "bzip2")
+ d->bz2 = (BZFILE*) compress_struct;
+#endif
+#ifdef HAVE_LZMA
+ else if (compressor.Name == "xz" || compressor.Name == "lzma")
{
- BZ2_bzclose(d->bz2);
- d->bz2 = NULL;
+ uint32_t const xzlevel = 6;
+ uint64_t const memlimit = UINT64_MAX;
+ if (d->lzma == NULL)
+ d->lzma = new FileFdPrivate::LZMAFILE;
+ d->lzma->file = (FILE*) compress_struct;
+ d->lzma->stream = LZMA_STREAM_INIT;
+
+ if ((Mode & ReadWrite) == ReadWrite)
+ return FileFdError("ReadWrite mode is not supported for file %s", FileName.c_str());
+
+ if ((Mode & WriteOnly) == WriteOnly)
+ {
+ if (compressor.Name == "xz")
+ {
+ if (lzma_easy_encoder(&d->lzma->stream, xzlevel, LZMA_CHECK_CRC32) != LZMA_OK)
+ return false;
+ }
+ else
+ {
+ lzma_options_lzma options;
+ lzma_lzma_preset(&options, xzlevel);
+ if (lzma_alone_encoder(&d->lzma->stream, &options) != LZMA_OK)
+ return false;
+ }
+ d->lzma->compressing = true;
+ }
+ else
+ {
+ if (compressor.Name == "xz")
+ {
+ if (lzma_auto_decoder(&d->lzma->stream, memlimit, 0) != LZMA_OK)
+ return false;
+ }
+ else
+ {
+ if (lzma_alone_decoder(&d->lzma->stream, memlimit) != LZMA_OK)
+ return false;
+ }
+ d->lzma->compressing = false;
+ }
}
- if ((Mode & ReadWrite) == ReadWrite)
- d->bz2 = BZ2_bzdopen(iFd, "r+");
- else if ((Mode & WriteOnly) == WriteOnly)
- d->bz2 = BZ2_bzdopen(iFd, "w");
- else
- d->bz2 = BZ2_bzdopen(iFd, "r");
- if (d->bz2 == NULL)
- return false;
+#endif
Flags |= Compressed;
return true;
}
@@ -1198,7 +1326,7 @@ bool FileFd::OpenInternDescriptor(unsigned int const Mode, APT::Configuration::C
}
else
{
- if (FileName.empty() == true)
+ if (d->compressed_fd != -1)
dup2(d->compressed_fd,STDIN_FILENO);
dup2(Pipe[1],STDOUT_FILENO);
}
@@ -1267,24 +1395,55 @@ bool FileFd::Read(void *To,unsigned long long Size,unsigned long long *Actual)
*((char *)To) = '\0';
do
{
+ if (false)
+ /* dummy so that the rest can be 'else if's */;
#ifdef HAVE_ZLIB
- if (d != NULL && d->gz != NULL)
+ else if (d != NULL && d->gz != NULL)
Res = gzread(d->gz,To,Size);
- else
#endif
#ifdef HAVE_BZ2
- if (d != NULL && d->bz2 != NULL)
+ else if (d != NULL && d->bz2 != NULL)
Res = BZ2_bzread(d->bz2,To,Size);
- else
#endif
+#ifdef HAVE_LZMA
+ else if (d != NULL && d->lzma != NULL)
+ {
+ if (d->lzma->eof == true)
+ break;
+
+ d->lzma->stream.next_out = (uint8_t *) To;
+ d->lzma->stream.avail_out = Size;
+ if (d->lzma->stream.avail_in == 0)
+ {
+ d->lzma->stream.next_in = d->lzma->buffer;
+ d->lzma->stream.avail_in = fread(d->lzma->buffer, 1, sizeof(d->lzma->buffer)/sizeof(d->lzma->buffer[0]), d->lzma->file);
+ }
+ d->lzma->err = lzma_code(&d->lzma->stream, LZMA_RUN);
+ if (d->lzma->err == LZMA_STREAM_END)
+ {
+ d->lzma->eof = true;
+ Res = Size - d->lzma->stream.avail_out;
+ }
+ else if (d->lzma->err != LZMA_OK)
+ {
+ Res = -1;
+ errno = 0;
+ }
+ else
+ Res = Size - d->lzma->stream.avail_out;
+ }
+#endif
+ else
Res = read(iFd,To,Size);
if (Res < 0)
{
if (errno == EINTR)
continue;
+ if (false)
+ /* dummy so that the rest can be 'else if's */;
#ifdef HAVE_ZLIB
- if (d != NULL && d->gz != NULL)
+ else if (d != NULL && d->gz != NULL)
{
int err;
char const * const errmsg = gzerror(d->gz, &err);
@@ -1293,7 +1452,7 @@ bool FileFd::Read(void *To,unsigned long long Size,unsigned long long *Actual)
}
#endif
#ifdef HAVE_BZ2
- if (d != NULL && d->bz2 != NULL)
+ else if (d != NULL && d->bz2 != NULL)
{
int err;
char const * const errmsg = BZ2_bzerror(d->bz2, &err);
@@ -1301,6 +1460,10 @@ bool FileFd::Read(void *To,unsigned long long Size,unsigned long long *Actual)
return FileFdError("BZ2_bzread: %s (%d: %s)", _("Read error"), err, errmsg);
}
#endif
+#ifdef HAVE_LZMA
+ else if (d != NULL && d->lzma != NULL)
+ return FileFdError("lzma_read: %s (%d)", _("Read error"), d->lzma->err);
+#endif
return FileFdErrno("read",_("Read error"));
}
@@ -1364,23 +1527,45 @@ bool FileFd::Write(const void *From,unsigned long long Size)
errno = 0;
do
{
+ if (false)
+ /* dummy so that the rest can be 'else if's */;
#ifdef HAVE_ZLIB
- if (d != NULL && d->gz != NULL)
- Res = gzwrite(d->gz,From,Size);
- else
+ else if (d != NULL && d->gz != NULL)
+ Res = gzwrite(d->gz,From,Size);
#endif
#ifdef HAVE_BZ2
- if (d != NULL && d->bz2 != NULL)
- Res = BZ2_bzwrite(d->bz2,(void*)From,Size);
- else
+ else if (d != NULL && d->bz2 != NULL)
+ Res = BZ2_bzwrite(d->bz2,(void*)From,Size);
+#endif
+#ifdef HAVE_LZMA
+ else if (d != NULL && d->lzma != NULL)
+ {
+ d->lzma->stream.next_in = (uint8_t *)From;
+ d->lzma->stream.avail_in = Size;
+ d->lzma->stream.next_out = d->lzma->buffer;
+ d->lzma->stream.avail_out = sizeof(d->lzma->buffer)/sizeof(d->lzma->buffer[0]);
+ d->lzma->err = lzma_code(&d->lzma->stream, LZMA_RUN);
+ if (d->lzma->err != LZMA_OK)
+ return false;
+ size_t const n = sizeof(d->lzma->buffer)/sizeof(d->lzma->buffer[0]) - d->lzma->stream.avail_out;
+ size_t const m = (n == 0) ? 0 : fwrite(d->lzma->buffer, 1, n, d->lzma->file);
+ if (m != n)
+ Res = -1;
+ else
+ Res = Size - d->lzma->stream.avail_in;
+ }
#endif
- Res = write(iFd,From,Size);
+ else
+ Res = write(iFd,From,Size);
+
if (Res < 0 && errno == EINTR)
continue;
if (Res < 0)
{
+ if (false)
+ /* dummy so that the rest can be 'else if's */;
#ifdef HAVE_ZLIB
- if (d != NULL && d->gz != NULL)
+ else if (d != NULL && d->gz != NULL)
{
int err;
char const * const errmsg = gzerror(d->gz, &err);
@@ -1389,7 +1574,7 @@ bool FileFd::Write(const void *From,unsigned long long Size)
}
#endif
#ifdef HAVE_BZ2
- if (d != NULL && d->bz2 != NULL)
+ else if (d != NULL && d->bz2 != NULL)
{
int err;
char const * const errmsg = BZ2_bzerror(d->bz2, &err);
@@ -1397,10 +1582,14 @@ bool FileFd::Write(const void *From,unsigned long long Size)
return FileFdError("BZ2_bzwrite: %s (%d: %s)", _("Write error"), err, errmsg);
}
#endif
+#ifdef HAVE_LZMA
+ else if (d != NULL && d->lzma != NULL)
+ return FileFdErrno("lzma_fwrite", _("Write error"));
+#endif
return FileFdErrno("write",_("Write error"));
}
- From = (char *)From + Res;
+ From = (char const *)From + Res;
Size -= Res;
if (d != NULL)
d->seekpos += Res;
@@ -1424,7 +1613,7 @@ bool FileFd::Write(int Fd, const void *From, unsigned long long Size)
if (Res < 0)
return _error->Errno("write",_("Write error"));
- From = (char *)From + Res;
+ From = (char const *)From + Res;
Size -= Res;
}
while (Res > 0 && Size > 0);
@@ -1440,11 +1629,7 @@ bool FileFd::Write(int Fd, const void *From, unsigned long long Size)
/* */
bool FileFd::Seek(unsigned long long To)
{
- if (d != NULL && (d->pipe == true
-#ifdef HAVE_BZ2
- || d->bz2 != NULL
-#endif
- ))
+ if (d != NULL && (d->pipe == true || d->InternalStream() == true))
{
// Our poor man seeking in pipes is costly, so try to avoid it
unsigned long long seekpos = Tell();
@@ -1455,13 +1640,7 @@ bool FileFd::Seek(unsigned long long To)
if ((d->openmode & ReadOnly) != ReadOnly)
return FileFdError("Reopen is only implemented for read-only files!");
-#ifdef HAVE_BZ2
- if (d->bz2 != NULL)
- {
- BZ2_bzclose(d->bz2);
- d->bz2 = NULL;
- }
-#endif
+ d->InternalClose(FileName);
if (iFd != -1)
close(iFd);
iFd = -1;
@@ -1507,11 +1686,7 @@ bool FileFd::Seek(unsigned long long To)
/* */
bool FileFd::Skip(unsigned long long Over)
{
- if (d != NULL && (d->pipe == true
-#ifdef HAVE_BZ2
- || d->bz2 != NULL
-#endif
- ))
+ if (d != NULL && (d->pipe == true || d->InternalStream() == true))
{
d->seekpos += Over;
char buffer[1024];
@@ -1548,8 +1723,12 @@ bool FileFd::Truncate(unsigned long long To)
// truncating /dev/null is always successful - as we get an error otherwise
if (To == 0 && FileName == "/dev/null")
return true;
-#if defined HAVE_ZLIB || defined HAVE_BZ2
- if (d != NULL && (d->gz != NULL || d->bz2 != NULL))
+#if defined HAVE_ZLIB || defined HAVE_BZ2 || defined HAVE_LZMA
+ if (d != NULL && (d->InternalStream() == true
+#ifdef HAVE_ZLIB
+ || d->gz != NULL
+#endif
+ ))
return FileFdError("Truncating compressed files is not implemented (%s)", FileName.c_str());
#endif
if (ftruncate(iFd,To) != 0)
@@ -1567,11 +1746,7 @@ unsigned long long FileFd::Tell()
// seeking around, but not all users of FileFd use always Seek() and co
// so d->seekpos isn't always true and we can just use it as a hint if
// we have nothing else, but not always as an authority…
- if (d != NULL && (d->pipe == true
-#ifdef HAVE_BZ2
- || d->bz2 != NULL
-#endif
- ))
+ if (d != NULL && (d->pipe == true || d->InternalStream() == true))
return d->seekpos;
off_t Res;
@@ -1646,11 +1821,7 @@ unsigned long long FileFd::Size()
// for compressor pipes st_size is undefined and at 'best' zero,
// so we 'read' the content and 'seek' back - see there
- if (d != NULL && (d->pipe == true
-#ifdef HAVE_BZ2
- || (d->bz2 && size > 0)
-#endif
- ))
+ if (d != NULL && (d->pipe == true || (d->InternalStream() == true && size > 0)))
{
unsigned long long const oldSeek = Tell();
char ignore[1000];
@@ -1793,7 +1964,13 @@ bool FileFd::FileFdError(const char *Description,...) {
}
/*}}}*/
-gzFile FileFd::gzFd() { return (gzFile) d->gz; }
+APT_DEPRECATED gzFile FileFd::gzFd() {
+#ifdef HAVE_ZLIB
+ return d->gz;
+#else
+ return NULL;
+#endif
+}
// Glob - wrapper around "glob()" /*{{{*/
generated by cgit v1.2.3 (git 2.25.1) at 2024-10-28 23:53:56 +0000