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-rw-r--r--apt-pkg/contrib/fileutl.cc73
-rw-r--r--apt-pkg/contrib/hashes.cc40
-rw-r--r--apt-pkg/contrib/hashes.h5
-rw-r--r--apt-pkg/contrib/hashsum.cc22
-rw-r--r--apt-pkg/contrib/hashsum_template.h5
5 files changed, 123 insertions, 22 deletions
diff --git a/apt-pkg/contrib/fileutl.cc b/apt-pkg/contrib/fileutl.cc
index a98c2cb85..b350973af 100644
--- a/apt-pkg/contrib/fileutl.cc
+++ b/apt-pkg/contrib/fileutl.cc
@@ -75,7 +75,9 @@ class FileFdPrivate {
bool pipe;
APT::Configuration::Compressor compressor;
unsigned int openmode;
- FileFdPrivate() : gz(NULL), compressed_fd(-1), compressor_pid(-1), pipe(false) {};
+ unsigned long long seekpos;
+ FileFdPrivate() : gz(NULL), compressed_fd(-1), compressor_pid(-1), pipe(false),
+ openmode(0), seekpos(0) {};
};
// RunScripts - Run a set of scripts from a configuration subtree /*{{{*/
@@ -1065,6 +1067,7 @@ bool FileFd::Read(void *To,unsigned long long Size,unsigned long long *Actual)
To = (char *)To + Res;
Size -= Res;
+ d->seekpos += Res;
if (Actual != 0)
*Actual += Res;
}
@@ -1097,15 +1100,19 @@ char* FileFd::ReadLine(char *To, unsigned long long const Size)
#endif
unsigned long long read = 0;
- if (Read(To, Size, &read) == false)
+ while ((Size - 1) != read)
+ {
+ unsigned long long done = 0;
+ if (Read(To + read, 1, &done) == false)
+ return NULL;
+ if (done == 0)
+ break;
+ if (To[read++] == '\n')
+ break;
+ }
+ if (read == 0)
return NULL;
- char* c = To;
- for (; *c != '\n' && *c != '\0' && read != 0; --read, ++c)
- ; // find the end of the line
- if (*c != '\0')
- *c = '\0';
- if (read != 0)
- Seek(Tell() - read);
+ To[read] = '\0';
return To;
}
/*}}}*/
@@ -1134,6 +1141,7 @@ bool FileFd::Write(const void *From,unsigned long long Size)
From = (char *)From + Res;
Size -= Res;
+ d->seekpos += Res;
}
while (Res > 0 && Size > 0);
@@ -1151,6 +1159,13 @@ bool FileFd::Seek(unsigned long long To)
{
if (d->pipe == true)
{
+ // Our poor man seeking in pipes is costly, so try to avoid it
+ unsigned long long seekpos = Tell();
+ if (seekpos == To)
+ return true;
+ else if (seekpos < To)
+ return Skip(To - seekpos);
+
if ((d->openmode & ReadOnly) != ReadOnly)
return _error->Error("Reopen is only implemented for read-only files!");
close(iFd);
@@ -1173,6 +1188,8 @@ bool FileFd::Seek(unsigned long long To)
if (To != 0)
return Skip(To);
+
+ d->seekpos = To;
return true;
}
int res;
@@ -1187,7 +1204,8 @@ bool FileFd::Seek(unsigned long long To)
Flags |= Fail;
return _error->Error("Unable to seek to %llu", To);
}
-
+
+ d->seekpos = To;
return true;
}
/*}}}*/
@@ -1196,6 +1214,20 @@ bool FileFd::Seek(unsigned long long To)
/* */
bool FileFd::Skip(unsigned long long Over)
{
+ if (d->pipe == true)
+ {
+ d->seekpos += Over;
+ char buffer[1024];
+ while (Over != 0)
+ {
+ unsigned long long toread = std::min((unsigned long long) sizeof(buffer), Over);
+ if (Read(buffer, toread) == false)
+ return _error->Error("Unable to seek ahead %llu",Over);
+ Over -= toread;
+ }
+ return true;
+ }
+
int res;
#if APT_USE_ZLIB
if (d->gz != NULL)
@@ -1208,7 +1240,8 @@ bool FileFd::Skip(unsigned long long Over)
Flags |= Fail;
return _error->Error("Unable to seek ahead %llu",Over);
}
-
+ d->seekpos = res;
+
return true;
}
/*}}}*/
@@ -1236,6 +1269,13 @@ bool FileFd::Truncate(unsigned long long To)
/* */
unsigned long long FileFd::Tell()
{
+ // In theory, we could just return seekpos here always instead of
+ // 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->pipe == true)
+ return d->seekpos;
+
off_t Res;
#if APT_USE_ZLIB
if (d->gz != NULL)
@@ -1245,6 +1285,7 @@ unsigned long long FileFd::Tell()
Res = lseek(iFd,0,SEEK_CUR);
if (Res == (off_t)-1)
_error->Errno("lseek","Failed to determine the current file position");
+ d->seekpos = Res;
return Res;
}
/*}}}*/
@@ -1281,15 +1322,14 @@ unsigned long long FileFd::Size()
// so we 'read' the content and 'seek' back - see there
if (d->pipe == true)
{
- // FIXME: If we have read first and then FileSize() the report is wrong
- size = 0;
+ unsigned long long const oldSeek = Tell();
char ignore[1000];
unsigned long long read = 0;
do {
Read(ignore, sizeof(ignore), &read);
- size += read;
} while(read != 0);
- Seek(0);
+ size = Tell();
+ Seek(oldSeek);
}
#if APT_USE_ZLIB
// only check gzsize if we are actually a gzip file, just checking for
@@ -1301,7 +1341,6 @@ unsigned long long FileFd::Size()
* this ourselves; the original (uncompressed) file size is the last 32
* bits of the file */
// FIXME: Size for gz-files is limited by 32bit… no largefile support
- off_t orig_pos = lseek(iFd, 0, SEEK_CUR);
if (lseek(iFd, -4, SEEK_END) < 0)
return _error->Errno("lseek","Unable to seek to end of gzipped file");
size = 0L;
@@ -1315,7 +1354,7 @@ unsigned long long FileFd::Size()
size = tmp_size;
#endif
- if (lseek(iFd, orig_pos, SEEK_SET) < 0)
+ if (lseek(iFd, d->seekpos, SEEK_SET) < 0)
return _error->Errno("lseek","Unable to seek in gzipped file");
return size;
}
diff --git a/apt-pkg/contrib/hashes.cc b/apt-pkg/contrib/hashes.cc
index 05001f042..e1a431823 100644
--- a/apt-pkg/contrib/hashes.cc
+++ b/apt-pkg/contrib/hashes.cc
@@ -61,25 +61,25 @@ bool HashString::VerifyFile(std::string filename) const /*{{{*/
if(Type == "MD5Sum")
{
MD5Summation MD5;
- MD5.AddFD(Fd.Fd(), Fd.Size());
+ MD5.AddFD(Fd);
fileHash = (std::string)MD5.Result();
}
else if (Type == "SHA1")
{
SHA1Summation SHA1;
- SHA1.AddFD(Fd.Fd(), Fd.Size());
+ SHA1.AddFD(Fd);
fileHash = (std::string)SHA1.Result();
}
else if (Type == "SHA256")
{
SHA256Summation SHA256;
- SHA256.AddFD(Fd.Fd(), Fd.Size());
+ SHA256.AddFD(Fd);
fileHash = (std::string)SHA256.Result();
}
else if (Type == "SHA512")
{
SHA512Summation SHA512;
- SHA512.AddFD(Fd.Fd(), Fd.Size());
+ SHA512.AddFD(Fd);
fileHash = (std::string)SHA512.Result();
}
Fd.Close();
@@ -135,5 +135,35 @@ bool Hashes::AddFD(int const Fd,unsigned long long Size, bool const addMD5,
}
return true;
}
+bool Hashes::AddFD(FileFd &Fd,unsigned long long Size, bool const addMD5,
+ bool const addSHA1, bool const addSHA256, bool const addSHA512)
+{
+ unsigned char Buf[64*64];
+ bool const ToEOF = (Size == 0);
+ while (Size != 0 || ToEOF)
+ {
+ unsigned long long n = sizeof(Buf);
+ if (!ToEOF) n = std::min(Size, n);
+ unsigned long long a = 0;
+ if (Fd.Read(Buf, n, &a) == false) // error
+ return false;
+ if (ToEOF == false)
+ {
+ if (a != n) // short read
+ return false;
+ }
+ else if (a == 0) // EOF
+ break;
+ Size -= a;
+ if (addMD5 == true)
+ MD5.Add(Buf, a);
+ if (addSHA1 == true)
+ SHA1.Add(Buf, a);
+ if (addSHA256 == true)
+ SHA256.Add(Buf, a);
+ if (addSHA512 == true)
+ SHA512.Add(Buf, a);
+ }
+ return true;
+}
/*}}}*/
-
diff --git a/apt-pkg/contrib/hashes.h b/apt-pkg/contrib/hashes.h
index b206eccb8..0c0b6c6a7 100644
--- a/apt-pkg/contrib/hashes.h
+++ b/apt-pkg/contrib/hashes.h
@@ -17,6 +17,7 @@
#include <apt-pkg/md5.h>
#include <apt-pkg/sha1.h>
#include <apt-pkg/sha2.h>
+#include <apt-pkg/fileutl.h>
#include <algorithm>
#include <vector>
@@ -74,6 +75,10 @@ class Hashes
{ return AddFD(Fd, Size, true, true, true, true); };
bool AddFD(int const Fd, unsigned long long Size, bool const addMD5,
bool const addSHA1, bool const addSHA256, bool const addSHA512);
+ inline bool AddFD(FileFd &Fd,unsigned long long Size = 0)
+ { return AddFD(Fd, Size, true, true, true, true); };
+ bool AddFD(FileFd &Fd, unsigned long long Size, bool const addMD5,
+ bool const addSHA1, bool const addSHA256, bool const addSHA512);
inline bool Add(const unsigned char *Beg,const unsigned char *End)
{return Add(Beg,End-Beg);};
};
diff --git a/apt-pkg/contrib/hashsum.cc b/apt-pkg/contrib/hashsum.cc
index ff3b112bb..289e43aa4 100644
--- a/apt-pkg/contrib/hashsum.cc
+++ b/apt-pkg/contrib/hashsum.cc
@@ -25,4 +25,26 @@ bool SummationImplementation::AddFD(int const Fd, unsigned long long Size) {
}
return true;
}
+bool SummationImplementation::AddFD(FileFd &Fd, unsigned long long Size) {
+ unsigned char Buf[64 * 64];
+ bool ToEOF = (Size == 0);
+ while (Size != 0 || ToEOF)
+ {
+ unsigned long long n = sizeof(Buf);
+ if (!ToEOF) n = std::min(Size, n);
+ unsigned long long a = 0;
+ if (Fd.Read(Buf, n, &a) == false) // error
+ return false;
+ if (ToEOF == false)
+ {
+ if (a != n) // short read
+ return false;
+ }
+ else if (a == 0) // EOF
+ break;
+ Size -= a;
+ Add(Buf, a);
+ }
+ return true;
+}
/*}}}*/
diff --git a/apt-pkg/contrib/hashsum_template.h b/apt-pkg/contrib/hashsum_template.h
index 6301ac9d0..9bf160b2b 100644
--- a/apt-pkg/contrib/hashsum_template.h
+++ b/apt-pkg/contrib/hashsum_template.h
@@ -10,11 +10,15 @@
#ifndef APTPKG_HASHSUM_TEMPLATE_H
#define APTPKG_HASHSUM_TEMPLATE_H
+#include <apt-pkg/fileutl.h>
+
#include <string>
#include <cstring>
#include <algorithm>
#include <stdint.h>
+#include <apt-pkg/strutl.h>
+
#ifndef APT_8_CLEANER_HEADERS
using std::string;
using std::min;
@@ -108,6 +112,7 @@ class SummationImplementation
{ return Add((const unsigned char *)Beg, End - Beg); };
bool AddFD(int Fd, unsigned long long Size = 0);
+ bool AddFD(FileFd &Fd, unsigned long long Size = 0);
};
#endif
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-10 13:36:01 +0000