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-rw-r--r--apt-pkg/contrib/cmndline.cc19
-rw-r--r--apt-pkg/contrib/configuration.cc5
-rw-r--r--apt-pkg/contrib/configuration.h14
-rw-r--r--apt-pkg/contrib/fileutl.cc107
-rw-r--r--apt-pkg/contrib/fileutl.h16
-rw-r--r--apt-pkg/contrib/gpgv.cc63
-rw-r--r--apt-pkg/contrib/hashes.cc4
-rw-r--r--apt-pkg/contrib/macros.h2
-rw-r--r--apt-pkg/contrib/proxy.cc86
-rw-r--r--apt-pkg/contrib/proxy.h16
-rw-r--r--apt-pkg/contrib/strutl.cc80
-rw-r--r--apt-pkg/contrib/strutl.h6
12 files changed, 324 insertions, 94 deletions
diff --git a/apt-pkg/contrib/cmndline.cc b/apt-pkg/contrib/cmndline.cc
index 3799c822d..93c1f4664 100644
--- a/apt-pkg/contrib/cmndline.cc
+++ b/apt-pkg/contrib/cmndline.cc
@@ -47,23 +47,26 @@ CommandLine::~CommandLine()
char const * CommandLine::GetCommand(Dispatch const * const Map,
unsigned int const argc, char const * const * const argv)
{
- // if there is a -- on the line there must be the word we search for around it
- // as -- marks the end of the options, just not sure if the command can be
- // considered an option or not, so accept both
+ // if there is a -- on the line there must be the word we search for either
+ // before it (as -- marks the end of the options) or right after it (as we can't
+ // decide if the command is actually an option, given that in theory, you could
+ // have parameters named like commands)
for (size_t i = 1; i < argc; ++i)
{
if (strcmp(argv[i], "--") != 0)
continue;
- ++i;
- if (i < argc)
+ // check if command is before --
+ for (size_t k = 1; k < i; ++k)
for (size_t j = 0; Map[j].Match != NULL; ++j)
- if (strcmp(argv[i], Map[j].Match) == 0)
+ if (strcmp(argv[k], Map[j].Match) == 0)
return Map[j].Match;
- i -= 2;
- if (i != 0)
+ // see if the next token after -- is the command
+ ++i;
+ if (i < argc)
for (size_t j = 0; Map[j].Match != NULL; ++j)
if (strcmp(argv[i], Map[j].Match) == 0)
return Map[j].Match;
+ // we found a --, but not a command
return NULL;
}
// no --, so search for the first word matching a command
diff --git a/apt-pkg/contrib/configuration.cc b/apt-pkg/contrib/configuration.cc
index fbe180f8e..4380d64b9 100644
--- a/apt-pkg/contrib/configuration.cc
+++ b/apt-pkg/contrib/configuration.cc
@@ -253,11 +253,6 @@ string Configuration::FindDir(const char *Name,const char *Default) const
// Configuration::FindVector - Find a vector of values /*{{{*/
// ---------------------------------------------------------------------
/* Returns a vector of config values under the given item */
-#if (APT_PKG_MAJOR >= 4 && APT_PKG_MINOR < 13)
-vector<string> Configuration::FindVector(const char *Name) const {
- return FindVector(Name, "");
-}
-#endif
vector<string> Configuration::FindVector(const char *Name, std::string const &Default) const
{
vector<string> Vec;
diff --git a/apt-pkg/contrib/configuration.h b/apt-pkg/contrib/configuration.h
index 6345c8a5d..2ecea8bee 100644
--- a/apt-pkg/contrib/configuration.h
+++ b/apt-pkg/contrib/configuration.h
@@ -34,6 +34,8 @@
#include <vector>
#include <iostream>
+#include <apt-pkg/macros.h>
+
#ifndef APT_8_CLEANER_HEADERS
using std::string;
#endif
@@ -59,7 +61,7 @@ class Configuration
Item *Root;
bool ToFree;
-
+
Item *Lookup(Item *Head,const char *S,unsigned long const &Len,bool const &Create);
Item *Lookup(const char *Name,const bool &Create);
inline const Item *Lookup(const char *Name) const
@@ -82,12 +84,8 @@ class Configuration
*
* \param Name of the parent node
* \param Default list of values separated by commas */
- std::vector<std::string> FindVector(const char *Name, std::string const &Default) const;
- std::vector<std::string> FindVector(std::string const &Name, std::string const &Default) const { return FindVector(Name.c_str(), Default); };
-#if (APT_PKG_MAJOR >= 4 && APT_PKG_MINOR < 13)
- std::vector<std::string> FindVector(const char *Name) const;
-#endif
- std::vector<std::string> FindVector(std::string const &Name="") const { return FindVector(Name.c_str(), ""); };
+ std::vector<std::string> FindVector(const char *Name, std::string const &Default = "") const;
+ std::vector<std::string> FindVector(std::string const &Name, std::string const &Default = "") const { return FindVector(Name.c_str(), Default); };
int FindI(const char *Name,int const &Default = 0) const;
int FindI(std::string const &Name,int const &Default = 0) const {return FindI(Name.c_str(),Default);};
bool FindB(const char *Name,bool const &Default = false) const;
@@ -127,7 +125,7 @@ class Configuration
class MatchAgainstConfig
{
std::vector<regex_t *> patterns;
- void clearPatterns();
+ APT_HIDDEN void clearPatterns();
public:
MatchAgainstConfig(char const * Config);
diff --git a/apt-pkg/contrib/fileutl.cc b/apt-pkg/contrib/fileutl.cc
index 02b30dc1f..df409fa36 100644
--- a/apt-pkg/contrib/fileutl.cc
+++ b/apt-pkg/contrib/fileutl.cc
@@ -47,6 +47,8 @@
#include <signal.h>
#include <errno.h>
#include <glob.h>
+#include <pwd.h>
+#include <grp.h>
#include <set>
#include <algorithm>
@@ -63,6 +65,10 @@
#include <endian.h>
#include <stdint.h>
+#if __gnu_linux__
+#include <sys/prctl.h>
+#endif
+
#include <apti18n.h>
/*}}}*/
@@ -890,7 +896,7 @@ class FileFdPrivate { /*{{{*/
bool eof;
bool compressing;
- LZMAFILE() : file(NULL), eof(false), compressing(false) {}
+ LZMAFILE() : file(NULL), eof(false), compressing(false) { buffer[0] = '\0'; }
~LZMAFILE() {
if (compressing == true)
{
@@ -1278,7 +1284,8 @@ bool FileFd::OpenInternDescriptor(unsigned int const Mode, APT::Configuration::C
if (d->lzma == NULL)
d->lzma = new FileFdPrivate::LZMAFILE;
d->lzma->file = (FILE*) compress_struct;
- d->lzma->stream = LZMA_STREAM_INIT;
+ lzma_stream tmp_stream = LZMA_STREAM_INIT;
+ d->lzma->stream = tmp_stream;
if ((Mode & ReadWrite) == ReadWrite)
return FileFdError("ReadWrite mode is not supported for file %s", FileName.c_str());
@@ -1834,7 +1841,8 @@ static bool StatFileFd(char const * const msg, int const iFd, std::string const
// higher-level code will generate more meaningful messages,
// even translated this would be meaningless for users
return _error->Errno("fstat", "Unable to determine %s for fd %i", msg, iFd);
- ispipe = S_ISFIFO(Buf.st_mode);
+ if (FileName.empty() == false)
+ ispipe = S_ISFIFO(Buf.st_mode);
}
// for compressor pipes st_size is undefined and at 'best' zero
@@ -2118,10 +2126,8 @@ bool Popen(const char* Args[], FileFd &Fd, pid_t &Child, FileFd::OpenMode Mode)
int Pipe[2] = {-1, -1};
if(pipe(Pipe) != 0)
- {
return _error->Errno("pipe", _("Failed to create subprocess IPC"));
- return NULL;
- }
+
std::set<int> keep_fds;
keep_fds.insert(Pipe[0]);
keep_fds.insert(Pipe[1]);
@@ -2164,3 +2170,92 @@ bool Popen(const char* Args[], FileFd &Fd, pid_t &Child, FileFd::OpenMode Mode)
return true;
}
+
+bool DropPrivs()
+{
+ // uid will be 0 in the end, but gid might be different anyway
+ uid_t old_uid = getuid();
+ gid_t old_gid = getgid();
+
+ if (old_uid != 0)
+ return true;
+ if(_config->FindB("Debug::NoDropPrivs", false) == true)
+ return true;
+
+ const std::string toUser = _config->Find("APT::Sandbox::User", "_apt");
+ struct passwd *pw = getpwnam(toUser.c_str());
+ if (pw == NULL)
+ return _error->Error("No user %s, can not drop rights", toUser.c_str());
+
+#if __gnu_linux__
+ // see prctl(2), needs linux3.5
+ int ret = prctl(PR_SET_NO_NEW_PRIVS, 1, 0,0, 0);
+ if(ret < 0)
+ _error->Warning("PR_SET_NO_NEW_PRIVS failed with %i", ret);
+#endif
+ // Do not change the order here, it might break things
+ if (setgroups(1, &pw->pw_gid))
+ return _error->Errno("setgroups", "Failed to setgroups");
+
+ if (setegid(pw->pw_gid) != 0)
+ return _error->Errno("setegid", "Failed to setegid");
+
+ if (setgid(pw->pw_gid) != 0)
+ return _error->Errno("setgid", "Failed to setgid");
+
+ if (setuid(pw->pw_uid) != 0)
+ return _error->Errno("setuid", "Failed to setuid");
+
+ // the seteuid() is probably uneeded (at least thats what the linux
+ // man-page says about setuid(2)) but we cargo culted it anyway
+ if (seteuid(pw->pw_uid) != 0)
+ return _error->Errno("seteuid", "Failed to seteuid");
+
+ // Verify that the user has only a single group, and the correct one
+ gid_t groups[1];
+ if (getgroups(1, groups) != 1)
+ return _error->Errno("getgroups", "Could not get new groups");
+ if (groups[0] != pw->pw_gid)
+ return _error->Error("Could not switch group");
+
+ // Verify that gid, egid, uid, and euid changed
+ if (getgid() != pw->pw_gid)
+ return _error->Error("Could not switch group");
+ if (getegid() != pw->pw_gid)
+ return _error->Error("Could not switch effective group");
+ if (getuid() != pw->pw_uid)
+ return _error->Error("Could not switch user");
+ if (geteuid() != pw->pw_uid)
+ return _error->Error("Could not switch effective user");
+
+#ifdef HAVE_GETRESUID
+ // verify that the saved set-user-id was changed as well
+ uid_t ruid = 0;
+ uid_t euid = 0;
+ uid_t suid = 0;
+ if (getresuid(&ruid, &euid, &suid))
+ return _error->Errno("getresuid", "Could not get saved set-user-ID");
+ if (suid != pw->pw_uid)
+ return _error->Error("Could not switch saved set-user-ID");
+#endif
+
+#ifdef HAVE_GETRESGID
+ // verify that the saved set-group-id was changed as well
+ gid_t rgid = 0;
+ gid_t egid = 0;
+ gid_t sgid = 0;
+ if (getresgid(&rgid, &egid, &sgid))
+ return _error->Errno("getresuid", "Could not get saved set-group-ID");
+ if (sgid != pw->pw_gid)
+ return _error->Error("Could not switch saved set-group-ID");
+#endif
+
+ // Check that uid and gid changes do not work anymore
+ if (pw->pw_gid != old_gid && (setgid(old_gid) != -1 || setegid(old_gid) != -1))
+ return _error->Error("Could restore a gid to root, privilege dropping did not work");
+
+ if (pw->pw_uid != old_uid && (setuid(old_uid) != -1 || seteuid(old_uid) != -1))
+ return _error->Error("Could restore a uid to root, privilege dropping did not work");
+
+ return true;
+}
diff --git a/apt-pkg/contrib/fileutl.h b/apt-pkg/contrib/fileutl.h
index 0b4d94885..9dd29eb9e 100644
--- a/apt-pkg/contrib/fileutl.h
+++ b/apt-pkg/contrib/fileutl.h
@@ -85,7 +85,9 @@ class FileFd
bool Skip(unsigned long long To);
bool Truncate(unsigned long long To);
unsigned long long Tell();
+ // the size of the file content (compressed files will be uncompressed first)
unsigned long long Size();
+ // the size of the file itself
unsigned long long FileSize();
time_t ModificationTime();
@@ -193,9 +195,23 @@ pid_t ExecFork(std::set<int> keep_fds);
void MergeKeepFdsFromConfiguration(std::set<int> &keep_fds);
bool ExecWait(pid_t Pid,const char *Name,bool Reap = false);
+
// check if the given file starts with a PGP cleartext signature
bool StartsWithGPGClearTextSignature(std::string const &FileName);
+/**
+ * \brief Drop privileges
+ *
+ * Drop the privileges to the user _apt (or the one specified in
+ * APT::Sandbox::User). This does not set the supplementary group
+ * ids up correctly, it only uses the default group. Also prevent
+ * the process from gaining any new privileges afterwards, at least
+ * on Linux.
+ *
+ * \return true on success, false on failure with _error set
+ */
+bool DropPrivs();
+
// File string manipulators
std::string flNotDir(std::string File);
std::string flNotFile(std::string File);
diff --git a/apt-pkg/contrib/gpgv.cc b/apt-pkg/contrib/gpgv.cc
index f24dd9640..9d798cca9 100644
--- a/apt-pkg/contrib/gpgv.cc
+++ b/apt-pkg/contrib/gpgv.cc
@@ -32,50 +32,30 @@ static char * GenerateTemporaryFileTemplate(const char *basename) /*{{{*/
/*}}}*/
// ExecGPGV - returns the command needed for verify /*{{{*/
// ---------------------------------------------------------------------
-/* Generating the commandline for calling gpgv is somehow complicated as
+/* Generating the commandline for calling gpg is somehow complicated as
we need to add multiple keyrings and user supplied options.
- Also, as gpgv has no options to enforce a certain reduced style of
+ Also, as gpg has no options to enforce a certain reduced style of
clear-signed files (=the complete content of the file is signed and
the content isn't encoded) we do a divide and conquer approach here
- and split up the clear-signed file in message and signature for gpgv
+ and split up the clear-signed file in message and signature for gpg.
+ And as a cherry on the cake, we use our apt-key wrapper to do part
+ of the lifting in regards to merging keyrings. Fun for the whole family.
*/
void ExecGPGV(std::string const &File, std::string const &FileGPG,
int const &statusfd, int fd[2])
{
#define EINTERNAL 111
- std::string const gpgvpath = _config->Find("Dir::Bin::gpg", "/usr/bin/gpgv");
- // FIXME: remove support for deprecated APT::GPGV setting
- std::string const trustedFile = _config->Find("APT::GPGV::TrustedKeyring", _config->FindFile("Dir::Etc::Trusted"));
- std::string const trustedPath = _config->FindDir("Dir::Etc::TrustedParts");
+ std::string const aptkey = _config->FindFile("Dir::Bin::apt-key", "/usr/bin/apt-key");
bool const Debug = _config->FindB("Debug::Acquire::gpgv", false);
- if (Debug == true)
- {
- std::clog << "gpgv path: " << gpgvpath << std::endl;
- std::clog << "Keyring file: " << trustedFile << std::endl;
- std::clog << "Keyring path: " << trustedPath << std::endl;
- }
-
- std::vector<std::string> keyrings;
- if (DirectoryExists(trustedPath))
- keyrings = GetListOfFilesInDir(trustedPath, "gpg", false, true);
- if (RealFileExists(trustedFile) == true)
- keyrings.push_back(trustedFile);
-
std::vector<const char *> Args;
- Args.reserve(30);
-
- if (keyrings.empty() == true)
- {
- // TRANSLATOR: %s is the trusted keyring parts directory
- ioprintf(std::cerr, _("No keyring installed in %s."),
- _config->FindDir("Dir::Etc::TrustedParts").c_str());
- exit(EINTERNAL);
- }
+ Args.reserve(10);
- Args.push_back(gpgvpath.c_str());
- Args.push_back("--ignore-time-conflict");
+ Args.push_back(aptkey.c_str());
+ Args.push_back("--quiet");
+ Args.push_back("--readonly");
+ Args.push_back("verify");
char statusfdstr[10];
if (statusfd != -1)
@@ -85,13 +65,6 @@ void ExecGPGV(std::string const &File, std::string const &FileGPG,
Args.push_back(statusfdstr);
}
- for (std::vector<std::string>::const_iterator K = keyrings.begin();
- K != keyrings.end(); ++K)
- {
- Args.push_back("--keyring");
- Args.push_back(K->c_str());
- }
-
Configuration::Item const *Opts;
Opts = _config->Tree("Acquire::gpgv::Options");
if (Opts != 0)
@@ -160,7 +133,7 @@ void ExecGPGV(std::string const &File, std::string const &FileGPG,
if (Debug == true)
{
- std::clog << "Preparing to exec: " << gpgvpath;
+ std::clog << "Preparing to exec: ";
for (std::vector<const char *>::const_iterator a = Args.begin(); *a != NULL; ++a)
std::clog << " " << *a;
std::clog << std::endl;
@@ -168,7 +141,7 @@ void ExecGPGV(std::string const &File, std::string const &FileGPG,
if (statusfd != -1)
{
- int const nullfd = open("/dev/null", O_RDONLY);
+ int const nullfd = open("/dev/null", O_WRONLY);
close(fd[0]);
// Redirect output to /dev/null; we read from the status fd
if (statusfd != STDOUT_FILENO)
@@ -185,7 +158,7 @@ void ExecGPGV(std::string const &File, std::string const &FileGPG,
if (releaseSignature == DETACHED)
{
- execvp(gpgvpath.c_str(), (char **) &Args[0]);
+ execvp(Args[0], (char **) &Args[0]);
ioprintf(std::cerr, "Couldn't execute %s to check %s", Args[0], File.c_str());
exit(EINTERNAL);
}
@@ -205,7 +178,7 @@ void ExecGPGV(std::string const &File, std::string const &FileGPG,
{
if (statusfd != -1)
dup2(fd[1], statusfd);
- execvp(gpgvpath.c_str(), (char **) &Args[0]);
+ execvp(Args[0], (char **) &Args[0]);
ioprintf(std::cerr, "Couldn't execute %s to check %s", Args[0], File.c_str());
UNLINK_EXIT(EINTERNAL);
}
@@ -216,7 +189,7 @@ void ExecGPGV(std::string const &File, std::string const &FileGPG,
{
if (errno == EINTR)
continue;
- ioprintf(std::cerr, _("Waited for %s but it wasn't there"), "gpgv");
+ ioprintf(std::cerr, _("Waited for %s but it wasn't there"), "apt-key");
UNLINK_EXIT(EINTERNAL);
}
#undef UNLINK_EXIT
@@ -229,14 +202,14 @@ void ExecGPGV(std::string const &File, std::string const &FileGPG,
// check if it exit'ed normally …
if (WIFEXITED(Status) == false)
{
- ioprintf(std::cerr, _("Sub-process %s exited unexpectedly"), "gpgv");
+ ioprintf(std::cerr, _("Sub-process %s exited unexpectedly"), "apt-key");
exit(EINTERNAL);
}
// … and with a good exit code
if (WEXITSTATUS(Status) != 0)
{
- ioprintf(std::cerr, _("Sub-process %s returned an error code (%u)"), "gpgv", WEXITSTATUS(Status));
+ ioprintf(std::cerr, _("Sub-process %s returned an error code (%u)"), "apt-key", WEXITSTATUS(Status));
exit(WEXITSTATUS(Status));
}
diff --git a/apt-pkg/contrib/hashes.cc b/apt-pkg/contrib/hashes.cc
index 199e395f6..417982343 100644
--- a/apt-pkg/contrib/hashes.cc
+++ b/apt-pkg/contrib/hashes.cc
@@ -209,11 +209,11 @@ bool HashStringList::operator==(HashStringList const &other) const /*{{{*/
std::string const forcedType = _config->Find("Acquire::ForceHash", "");
if (forcedType.empty() == false)
{
- HashString const * const hs = other.find(forcedType);
+ HashString const * const hs = find(forcedType);
HashString const * const ohs = other.find(forcedType);
if (hs == NULL || ohs == NULL)
return false;
- return hs == ohs;
+ return *hs == *ohs;
}
short matches = 0;
for (const_iterator hs = begin(); hs != end(); ++hs)
diff --git a/apt-pkg/contrib/macros.h b/apt-pkg/contrib/macros.h
index b268ce24c..a0573398d 100644
--- a/apt-pkg/contrib/macros.h
+++ b/apt-pkg/contrib/macros.h
@@ -138,7 +138,7 @@
// Non-ABI-Breaks should only increase RELEASE number.
// See also buildlib/libversion.mak
#define APT_PKG_MAJOR 4
-#define APT_PKG_MINOR 13
+#define APT_PKG_MINOR 14
#define APT_PKG_RELEASE 0
#endif
diff --git a/apt-pkg/contrib/proxy.cc b/apt-pkg/contrib/proxy.cc
new file mode 100644
index 000000000..0c753131d
--- /dev/null
+++ b/apt-pkg/contrib/proxy.cc
@@ -0,0 +1,86 @@
+// -*- mode: cpp; mode: fold -*-
+// Description /*{{{*/
+/* ######################################################################
+
+ Proxy - Proxy releated functions
+
+ ##################################################################### */
+ /*}}}*/
+// Include Files /*{{{*/
+#include<apt-pkg/configuration.h>
+#include<apt-pkg/error.h>
+#include<apt-pkg/fileutl.h>
+#include<apt-pkg/strutl.h>
+
+#include<iostream>
+#include <unistd.h>
+
+#include "proxy.h"
+
+
+// AutoDetectProxy - auto detect proxy /*{{{*/
+// ---------------------------------------------------------------------
+/* */
+bool AutoDetectProxy(URI &URL)
+{
+ // we support both http/https debug options
+ bool Debug = _config->FindB("Debug::Acquire::"+URL.Access,false);
+
+ // the user already explicitly set a proxy for this host
+ if(_config->Find("Acquire::"+URL.Access+"::proxy::"+URL.Host, "") != "")
+ return true;
+
+ // option is "Acquire::http::Proxy-Auto-Detect" but we allow the old
+ // name without the dash ("-")
+ std::string AutoDetectProxyCmd = _config->Find("Acquire::"+URL.Access+"::Proxy-Auto-Detect",
+ _config->Find("Acquire::"+URL.Access+"::ProxyAutoDetect"));
+
+ if (AutoDetectProxyCmd.empty())
+ return true;
+
+ if (Debug)
+ std::clog << "Using auto proxy detect command: " << AutoDetectProxyCmd << std::endl;
+
+ int Pipes[2] = {-1,-1};
+ if (pipe(Pipes) != 0)
+ return _error->Errno("pipe", "Failed to create Pipe");
+
+ pid_t Process = ExecFork();
+ if (Process == 0)
+ {
+ close(Pipes[0]);
+ dup2(Pipes[1],STDOUT_FILENO);
+ SetCloseExec(STDOUT_FILENO,false);
+
+ std::string foo = URL;
+ const char *Args[4];
+ Args[0] = AutoDetectProxyCmd.c_str();
+ Args[1] = foo.c_str();
+ Args[2] = 0;
+ execv(Args[0],(char **)Args);
+ std::cerr << "Failed to exec method " << Args[0] << std::endl;
+ _exit(100);
+ }
+ char buf[512];
+ int InFd = Pipes[0];
+ close(Pipes[1]);
+ int res = read(InFd, buf, sizeof(buf)-1);
+ ExecWait(Process, "ProxyAutoDetect", true);
+
+ if (res < 0)
+ return _error->Errno("read", "Failed to read");
+ if (res == 0)
+ return _error->Warning("ProxyAutoDetect returned no data");
+
+ // add trailing \0
+ buf[res] = 0;
+
+ if (Debug)
+ std::clog << "auto detect command returned: '" << buf << "'" << std::endl;
+
+ if (strstr(buf, URL.Access.c_str()) == buf)
+ _config->Set("Acquire::"+URL.Access+"::proxy::"+URL.Host, _strstrip(buf));
+
+ return true;
+}
+ /*}}}*/
diff --git a/apt-pkg/contrib/proxy.h b/apt-pkg/contrib/proxy.h
new file mode 100644
index 000000000..2cbcd07b4
--- /dev/null
+++ b/apt-pkg/contrib/proxy.h
@@ -0,0 +1,16 @@
+// -*- mode: cpp; mode: fold -*-
+// Description /*{{{*/
+/* ######################################################################
+
+ Proxy - Proxy operations
+
+ ##################################################################### */
+ /*}}}*/
+#ifndef PKGLIB_PROXY_H
+#define PKGLIB_PROXY_H
+
+class URI;
+bool AutoDetectProxy(URI &URL);
+
+
+#endif
diff --git a/apt-pkg/contrib/strutl.cc b/apt-pkg/contrib/strutl.cc
index 2100ee47b..aad358a55 100644
--- a/apt-pkg/contrib/strutl.cc
+++ b/apt-pkg/contrib/strutl.cc
@@ -45,14 +45,26 @@ using namespace std;
// ---------------------------------------------------------------------
namespace APT {
namespace String {
-std::string Strip(const std::string &s)
+std::string Strip(const std::string &str)
{
- size_t start = s.find_first_not_of(" \t\n");
- // only whitespace
- if (start == string::npos)
+ // ensure we have at least one character
+ if (str.empty() == true)
+ return str;
+
+ char const * const s = str.c_str();
+ size_t start = 0;
+ for (; isspace(s[start]) != 0; ++start)
+ ; // find the first not-space
+
+ // string contains only whitespaces
+ if (s[start] == '\0')
return "";
- size_t end = s.find_last_not_of(" \t\n");
- return s.substr(start, end-start+1);
+
+ size_t end = str.length() - 1;
+ for (; isspace(s[end]) != 0; --end)
+ ; // find the last not-space
+
+ return str.substr(start, end - start + 1);
}
bool Endswith(const std::string &s, const std::string &end)
@@ -62,6 +74,13 @@ bool Endswith(const std::string &s, const std::string &end)
return (s.substr(s.size() - end.size(), s.size()) == end);
}
+bool Startswith(const std::string &s, const std::string &start)
+{
+ if (start.size() > s.size())
+ return false;
+ return (s.substr(0, start.size()) == start);
+}
+
}
}
/*}}}*/
@@ -434,23 +453,30 @@ string TimeToStr(unsigned long Sec)
/* This replaces all occurrences of Subst with Contents in Str. */
string SubstVar(const string &Str,const string &Subst,const string &Contents)
{
+ if (Subst.empty() == true)
+ return Str;
+
string::size_type Pos = 0;
string::size_type OldPos = 0;
string Temp;
-
- while (OldPos < Str.length() &&
+
+ while (OldPos < Str.length() &&
(Pos = Str.find(Subst,OldPos)) != string::npos)
{
- Temp += string(Str,OldPos,Pos) + Contents;
- OldPos = Pos + Subst.length();
+ if (OldPos != Pos)
+ Temp.append(Str, OldPos, Pos - OldPos);
+ if (Contents.empty() == false)
+ Temp.append(Contents);
+ OldPos = Pos + Subst.length();
}
-
+
if (OldPos == 0)
return Str;
-
+
+ if (OldPos >= Str.length())
+ return Temp;
return Temp + string(Str,OldPos);
}
-
string SubstVar(string Str,const struct SubstVar *Vars)
{
for (; Vars->Subst != 0; Vars++)
@@ -697,9 +723,12 @@ string LookupTag(const string &Message,const char *Tag,const char *Default)
then returns the result. Several varients on true/false are checked. */
int StringToBool(const string &Text,int Default)
{
- char *End;
- int Res = strtol(Text.c_str(),&End,0);
- if (End != Text.c_str() && Res >= 0 && Res <= 1)
+ char *ParseEnd;
+ int Res = strtol(Text.c_str(),&ParseEnd,0);
+ // ensure that the entire string was converted by strtol to avoid
+ // failures on "apt-cache show -a 0ad" where the "0" is converted
+ const char *TextEnd = Text.c_str()+Text.size();
+ if (ParseEnd == TextEnd && Res >= 0 && Res <= 1)
return Res;
// Check for positives
@@ -1039,7 +1068,7 @@ bool StrToNum(const char *Str,unsigned long long &Res,unsigned Len,unsigned Base
// ---------------------------------------------------------------------
/* This is used in decoding the 256bit encoded fixed length fields in
tar files */
-bool Base256ToNum(const char *Str,unsigned long &Res,unsigned int Len)
+bool Base256ToNum(const char *Str,unsigned long long &Res,unsigned int Len)
{
if ((Str[0] & 0x80) == 0)
return false;
@@ -1052,6 +1081,23 @@ bool Base256ToNum(const char *Str,unsigned long &Res,unsigned int Len)
}
}
/*}}}*/
+// Base256ToNum - Convert a fixed length binary to a number /*{{{*/
+// ---------------------------------------------------------------------
+/* This is used in decoding the 256bit encoded fixed length fields in
+ tar files */
+bool Base256ToNum(const char *Str,unsigned long &Res,unsigned int Len)
+{
+ unsigned long long Num;
+ bool rc;
+
+ rc = Base256ToNum(Str, Num, Len);
+ Res = Num;
+ if (Res != Num)
+ return false;
+
+ return rc;
+}
+ /*}}}*/
// HexDigit - Convert a hex character into an integer /*{{{*/
// ---------------------------------------------------------------------
/* Helper for Hex2Num */
diff --git a/apt-pkg/contrib/strutl.h b/apt-pkg/contrib/strutl.h
index 185cdc3fc..e20ddca9c 100644
--- a/apt-pkg/contrib/strutl.h
+++ b/apt-pkg/contrib/strutl.h
@@ -40,6 +40,7 @@ namespace APT {
namespace String {
std::string Strip(const std::string &s);
bool Endswith(const std::string &s, const std::string &ending);
+ bool Startswith(const std::string &s, const std::string &starting);
}
}
@@ -72,6 +73,7 @@ bool ReadMessages(int Fd, std::vector<std::string> &List);
bool StrToNum(const char *Str,unsigned long &Res,unsigned Len,unsigned Base = 0);
bool StrToNum(const char *Str,unsigned long long &Res,unsigned Len,unsigned Base = 0);
bool Base256ToNum(const char *Str,unsigned long &Res,unsigned int Len);
+bool Base256ToNum(const char *Str,unsigned long long &Res,unsigned int Len);
bool Hex2Num(const std::string &Str,unsigned char *Num,unsigned int Length);
// input changing string split
@@ -151,9 +153,9 @@ inline const char *DeNull(const char *s) {return (s == 0?"(null)":s);}
class URI
{
void CopyFrom(const std::string &From);
-
+
public:
-
+
std::string Access;
std::string User;
std::string Password;
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-01 08:24:11 +0000