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-rw-r--r--apt-pkg/contrib/proxy.cc82
-rw-r--r--apt-pkg/contrib/proxy.h16
-rw-r--r--apt-pkg/contrib/strutl.cc54
3 files changed, 136 insertions, 16 deletions
diff --git a/apt-pkg/contrib/proxy.cc b/apt-pkg/contrib/proxy.cc
new file mode 100644
index 000000000..b58db8478
--- /dev/null
+++ b/apt-pkg/contrib/proxy.cc
@@ -0,0 +1,82 @@
+// -*- 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);
+
+ // 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..87f57a30e 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)
@@ -434,23 +446,30 @@ 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 +716,12 @@ 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