test if TMPDIR is accessible before using

[apt.git] / methods / rred.cc

diff --git a/methods/rred.cc b/methods/rred.cc
index ed3fcc82ecafbbb40ea9803eb9c2b3eb41c4ba74..cabb3c456ae923b66ba3bb87e3afcf4e378a3865 100644 (file)
--- a/methods/rred.cc
+++ b/methods/rred.cc
@@ -8,24 +8,24 @@
 #include <config.h>
 
 #include <apt-pkg/fileutl.h>
 #include <config.h>
 
 #include <apt-pkg/fileutl.h>

-#include <apt-pkg/mmap.h>

 #include <apt-pkg/error.h>
 #include <apt-pkg/acquire-method.h>
 #include <apt-pkg/strutl.h>
 #include <apt-pkg/hashes.h>
 #include <apt-pkg/configuration.h>
 
 #include <apt-pkg/error.h>
 #include <apt-pkg/acquire-method.h>
 #include <apt-pkg/strutl.h>
 #include <apt-pkg/hashes.h>
 #include <apt-pkg/configuration.h>
 

+#include <stddef.h>
+#include <iostream>

 #include <string>
 #include <list>
 #include <vector>
 #include <string>
 #include <list>
 #include <vector>

-#include <iterator>

 
 #include <assert.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
 #include <sys/stat.h>
 
 #include <assert.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
 #include <sys/stat.h>

-#include <utime.h>
+#include <sys/time.h>

 
 #include <apti18n.h>
 
 
 #include <apti18n.h>
 


@@ -37,11 +37,9 @@ class MemBlock {
    char *free;
    struct MemBlock *next;
 
    char *free;
    struct MemBlock *next;
 

-   MemBlock(size_t size)
+   MemBlock(size_t size) : size(size), next(NULL)

    {
       free = start = new char[size];
    {
       free = start = new char[size];

-      size = size;
-      next = NULL;

    }
 
    size_t avail(void) { return size - (free - start); }
    }
 
    size_t avail(void) { return size - (free - start); }


@@ -157,7 +155,7 @@ class FileChanges {
 #ifdef POSDEBUG
       size_t cpos = 0;
       std::list<struct Change>::iterator x;
 #ifdef POSDEBUG
       size_t cpos = 0;
       std::list<struct Change>::iterator x;

-      for (x = changes.begin(); x != where; x++) {
+      for (x = changes.begin(); x != where; ++x) {

         assert(x != changes.end());
         cpos += x->offset + x->add_cnt;
       }
         assert(x != changes.end());
         cpos += x->offset + x->add_cnt;
       }


@@ -208,7 +206,7 @@ class FileChanges {
         left();
       }
       std::list<struct Change>::iterator next = where;
         left();
       }
       std::list<struct Change>::iterator next = where;

-      next++;
+      ++next;

 
       while (next != changes.end() && next->offset == 0) {
         where->del_cnt += next->del_cnt;
 
       while (next != changes.end() && next->offset == 0) {
         where->del_cnt += next->del_cnt;


@@ -221,7 +219,7 @@ class FileChanges {
            where->add_cnt = next->add_cnt;
            next = changes.erase(next);
         } else {
            where->add_cnt = next->add_cnt;
            next = changes.erase(next);
         } else {

-           next++;
+           ++next;

         }
       }
    }
         }
       }
    }


@@ -261,7 +259,7 @@ class FileChanges {
       if (where != changes.end())
         where->offset -= offset;
       changes.insert(where, Change(offset));
       if (where != changes.end())
         where->offset -= offset;
       changes.insert(where, Change(offset));

-      where--;
+      --where;

       assert(pos_is_okay());
    }
 
       assert(pos_is_okay());
    }
 


@@ -284,24 +282,8 @@ class FileChanges {
       before.add_len -= where->add_len;
 
       changes.insert(where, before);
       before.add_len -= where->add_len;
 
       changes.insert(where, before);

-      where--;
-      assert(pos_is_okay());
-   }
-
-   size_t check_next_offset(size_t max)
-   {
+      --where;

       assert(pos_is_okay());
       assert(pos_is_okay());

-      if (max > 0)
-      {
-        where++;
-        if (where != changes.end()) {
-           if (where->offset < max)
-              max = where->offset;
-        }
-        where--;
-        assert(pos_is_okay());
-      }
-      return max;

    }
 
    void delete_lines(size_t cnt)
    }
 
    void delete_lines(size_t cnt)


@@ -317,7 +299,7 @@ class FileChanges {
         x->skip_lines(del);
         cnt -= del;
 
         x->skip_lines(del);
         cnt -= del;
 

-        x++;
+        ++x;

         if (x == changes.end()) {
            del = cnt;
         } else {
         if (x == changes.end()) {
            del = cnt;
         } else {


@@ -334,7 +316,7 @@ class FileChanges {
 
    void left(void) {
       assert(pos_is_okay());
 
    void left(void) {
       assert(pos_is_okay());

-      where--;
+      --where;

       pos -= where->offset + where->add_cnt;
       assert(pos_is_okay());
    }
       pos -= where->offset + where->add_cnt;
       assert(pos_is_okay());
    }


@@ -342,7 +324,7 @@ class FileChanges {
    void right(void) {
       assert(pos_is_okay());
       pos += where->offset + where->add_cnt;
    void right(void) {
       assert(pos_is_okay());
       pos += where->offset + where->add_cnt;

-      where++;
+      ++where;

       assert(pos_is_okay());
    }
 };
       assert(pos_is_okay());
    }
 };


@@ -351,69 +333,68 @@ class Patch {
    FileChanges filechanges;
    MemBlock add_text;
 
    FileChanges filechanges;
    MemBlock add_text;
 

+   static bool retry_fwrite(char *b, size_t l, FILE *f, Hashes *hash)
+   {
+      size_t r = 1;
+      while (r > 0 && l > 0)
+      {
+         r = fwrite(b, 1, l, f);
+        if (hash)
+           hash->Add((unsigned char*)b, r);
+        l -= r;
+        b += r;
+      }
+      return l == 0;
+   }
+

    static void dump_rest(FILE *o, FILE *i, Hashes *hash)
    {
       char buffer[BLOCK_SIZE];
       size_t l;
       while (0 < (l = fread(buffer, 1, sizeof(buffer), i))) {
    static void dump_rest(FILE *o, FILE *i, Hashes *hash)
    {
       char buffer[BLOCK_SIZE];
       size_t l;
       while (0 < (l = fread(buffer, 1, sizeof(buffer), i))) {

-        fwrite(buffer, 1, l, o);
-        if (hash)
-           hash->Add((unsigned char*)buffer, l);
+        if (!retry_fwrite(buffer, l, o, hash))
+           break;

       }
    }
 
    static void dump_lines(FILE *o, FILE *i, size_t n, Hashes *hash)
    {
       char buffer[BLOCK_SIZE];
       }
    }
 
    static void dump_lines(FILE *o, FILE *i, size_t n, Hashes *hash)
    {
       char buffer[BLOCK_SIZE];

-      size_t l;

       while (n > 0) {
         if (fgets(buffer, sizeof(buffer), i) == 0)
            buffer[0] = '\0';
       while (n > 0) {
         if (fgets(buffer, sizeof(buffer), i) == 0)
            buffer[0] = '\0';

-        l = strlen(buffer);
+        size_t const l = strlen(buffer);

         if (l == 0 || buffer[l-1] == '\n')
            n--;
         if (l == 0 || buffer[l-1] == '\n')
            n--;

-        fwrite(buffer, 1, l, o);
-
-        if (hash)
-           hash->Add((unsigned char*)buffer, l);
+        retry_fwrite(buffer, l, o, hash);

       }
    }
 
    static void skip_lines(FILE *i, int n)
    {
       char buffer[BLOCK_SIZE];
       }
    }
 
    static void skip_lines(FILE *i, int n)
    {
       char buffer[BLOCK_SIZE];

-      size_t l;

       while (n > 0) {
         if (fgets(buffer, sizeof(buffer), i) == 0)
            buffer[0] = '\0';
       while (n > 0) {
         if (fgets(buffer, sizeof(buffer), i) == 0)
            buffer[0] = '\0';

-        l = strlen(buffer);
+        size_t const l = strlen(buffer);

         if (l == 0 || buffer[l-1] == '\n')
            n--;
       }
    }
 
         if (l == 0 || buffer[l-1] == '\n')
            n--;
       }
    }
 

-   static bool dump_mem(FILE *o, char *p, size_t s, Hashes *hash) {
-      size_t r;
-      while (s > 0) {
-        r = fwrite(p, 1, s, o);
-        if (hash)
-           hash->Add((unsigned char*)p, s);
-        s -= r;
-        p += r;
-        if (r == 0) return false;
-      }
-      return true;
+   static void dump_mem(FILE *o, char *p, size_t s, Hashes *hash) {
+      retry_fwrite(p, s, o, hash);

    }
 
    public:
 
    }
 
    public:
 

-   void read_diff(FILE *f)
+   void read_diff(FileFd &f)

    {
       char buffer[BLOCK_SIZE];
       bool cmdwanted = true;
 
       Change ch(0);
    {
       char buffer[BLOCK_SIZE];
       bool cmdwanted = true;
 
       Change ch(0);

-      while(fgets(buffer, sizeof(buffer), f))
+      while(f.ReadLine(buffer, sizeof(buffer)))

       {
         if (cmdwanted) {
            char *m, *c;
       {
         if (cmdwanted) {
            char *m, *c;


@@ -455,7 +436,7 @@ class Patch {
                  filechanges.add_change(ch);
                  break;
            }
                  filechanges.add_change(ch);
                  break;
            }

-        } else { /* !cmdwaanted */
+        } else { /* !cmdwanted */

            if (buffer[0] == '.' && buffer[1] == '\n') {
               cmdwanted = true;
               filechanges.add_change(ch);
            if (buffer[0] == '.' && buffer[1] == '\n') {
               cmdwanted = true;
               filechanges.add_change(ch);


@@ -487,24 +468,24 @@ class Patch {
 
    void write_diff(FILE *f)
    {
 
    void write_diff(FILE *f)
    {

-      size_t line = 0;
+      unsigned long long line = 0;

       std::list<struct Change>::reverse_iterator ch;
       std::list<struct Change>::reverse_iterator ch;

-      for (ch = filechanges.rbegin(); ch != filechanges.rend(); ch++) {
+      for (ch = filechanges.rbegin(); ch != filechanges.rend(); ++ch) {

         line += ch->offset + ch->del_cnt;
       }
 
         line += ch->offset + ch->del_cnt;
       }
 

-      for (ch = filechanges.rbegin(); ch != filechanges.rend(); ch++) {
+      for (ch = filechanges.rbegin(); ch != filechanges.rend(); ++ch) {

         std::list<struct Change>::reverse_iterator mg_i, mg_e = ch;
         while (ch->del_cnt == 0 && ch->offset == 0)
         std::list<struct Change>::reverse_iterator mg_i, mg_e = ch;
         while (ch->del_cnt == 0 && ch->offset == 0)

-           ch++;
+           ++ch;

         line -= ch->del_cnt;
         if (ch->add_cnt > 0) {
            if (ch->del_cnt == 0) {
         line -= ch->del_cnt;
         if (ch->add_cnt > 0) {
            if (ch->del_cnt == 0) {

-              fprintf(f, "%lua\n", line);
+              fprintf(f, "%llua\n", line);

            } else if (ch->del_cnt == 1) {
            } else if (ch->del_cnt == 1) {

-              fprintf(f, "%luc\n", line+1);
+              fprintf(f, "%lluc\n", line+1);

            } else {
            } else {

-              fprintf(f, "%lu,%luc\n", line+1, line+ch->del_cnt);
+              fprintf(f, "%llu,%lluc\n", line+1, line+ch->del_cnt);

            }
 
            mg_i = ch;
            }
 
            mg_i = ch;


@@ -514,9 +495,9 @@ class Patch {
 
            fprintf(f, ".\n");
         } else if (ch->del_cnt == 1) {
 
            fprintf(f, ".\n");
         } else if (ch->del_cnt == 1) {

-           fprintf(f, "%lud\n", line+1);
+           fprintf(f, "%llud\n", line+1);

         } else if (ch->del_cnt > 1) {
         } else if (ch->del_cnt > 1) {

-           fprintf(f, "%lu,%lud\n", line+1, line+ch->del_cnt);
+           fprintf(f, "%llu,%llud\n", line+1, line+ch->del_cnt);

         }
         line -= ch->offset;
       }
         }
         line -= ch->offset;
       }


@@ -525,7 +506,7 @@ class Patch {
    void apply_against_file(FILE *out, FILE *in, Hashes *hash = NULL)
    {
       std::list<struct Change>::iterator ch;
    void apply_against_file(FILE *out, FILE *in, Hashes *hash = NULL)
    {
       std::list<struct Change>::iterator ch;

-      for (ch = filechanges.begin(); ch != filechanges.end(); ch++) {
+      for (ch = filechanges.begin(); ch != filechanges.end(); ++ch) {

         dump_lines(out, in, ch->offset, hash);
         skip_lines(in, ch->del_cnt);
         dump_mem(out, ch->add, ch->add_len, hash);
         dump_lines(out, in, ch->offset, hash);
         skip_lines(in, ch->del_cnt);
         dump_mem(out, ch->add, ch->add_len, hash);


@@ -534,66 +515,11 @@ class Patch {
    }
 };
 
    }
 };
 

-bool LookupPatches(const std::string &Message, std::vector<std::string> &lines)
-{
-   const char *Tag = "Patches";
-   const size_t Length = strlen(Tag);
-
-   std::string::const_iterator I, J;
-
-   std::clog << "Looking for \"Patches:\" section in message:\n\n" << Message << "\n\n";
-   std::clog.flush();
-
-   for (I = Message.begin(); I + Length < Message.end(); ++I)
-   {
-      if (I[Length] == ':' && stringcasecmp(I, I+Length, Tag) == 0)
-      {
-        // found the tag, now read the patches
-        for(;;) {
-           for (; I < Message.end() && *I != '\n'; ++I);
-           if (I < Message.end()) I++;
-           if (I == Message.end() || *I != ' ')
-              break;
-           while (I < Message.end() && isspace(*I)) I++;
-           for (J = I; J < Message.end() && *J != '\n'; ++J)
-              ;
-           do
-              J--;
-           while (I < J && isspace(*J));
-           if (I < J)
-              lines.push_back(std::string(I,++J));
-           else
-              break;
-           I = J;
-        }
-        std::clog << "Found " << lines.size() << " patches!\n";
-        std::clog.flush();
-        return true;
-      }
-   }
-   std::clog << "Found no patches! :(\n";
-   std::clog.flush();
-   return false;
-}
-
-

 class RredMethod : public pkgAcqMethod {
    private:
       bool Debug;
 class RredMethod : public pkgAcqMethod {
    private:
       bool Debug;

-      std::vector<std::string> patchpaths;

 
    protected:
 
    protected:

-      virtual bool HandleMessage(int Number, std::string Message) {
-        if (Number == 600)
-        {
-           patchpaths.clear();
-           LookupPatches(Message, patchpaths);
-           std::clog << "Ended up with " << patchpaths.size() << " patches!\n";
-           std::clog.flush();
-        }
-        return pkgAcqMethod::HandleMessage(Number, Message);
-      }
-

       virtual bool Fetch(FetchItem *Itm) {
         Debug = _config->FindB("Debug::pkgAcquire::RRed", false);
         URI Get = Itm->Uri;
       virtual bool Fetch(FetchItem *Itm) {
         Debug = _config->FindB("Debug::pkgAcquire::RRed", false);
         URI Get = Itm->Uri;


@@ -601,36 +527,50 @@ class RredMethod : public pkgAcqMethod {
 
         FetchResult Res;
         Res.Filename = Itm->DestFile;
 
         FetchResult Res;
         Res.Filename = Itm->DestFile;

-        if (Itm->Uri.empty()) {
+        if (Itm->Uri.empty())
+        {

            Path = Itm->DestFile;
            Itm->DestFile.append(".result");
         } else
            URIStart(Res);
 
            Path = Itm->DestFile;
            Itm->DestFile.append(".result");
         } else
            URIStart(Res);
 

+        std::vector<std::string> patchpaths;

         Patch patch;
 
         Patch patch;
 

-        if (patchpaths.empty())
-        {
+        if (FileExists(Path + ".ed") == true)

            patchpaths.push_back(Path + ".ed");
            patchpaths.push_back(Path + ".ed");

+        else
+        {
+           _error->PushToStack();
+           std::vector<std::string> patches = GetListOfFilesInDir(flNotFile(Path), "gz", true, false);
+           _error->RevertToStack();
+
+           std::string const baseName = Path + ".ed.";
+           for (std::vector<std::string>::const_iterator p = patches.begin();
+                 p != patches.end(); ++p)
+              if (p->compare(0, baseName.length(), baseName) == 0)
+                 patchpaths.push_back(*p);

         }
 
         std::string patch_name;
         for (std::vector<std::string>::iterator I = patchpaths.begin();
               I != patchpaths.end();
         }
 
         std::string patch_name;
         for (std::vector<std::string>::iterator I = patchpaths.begin();
               I != patchpaths.end();

-              I++)
+              ++I)

         {
            patch_name = *I;
            if (Debug == true)
               std::clog << "Patching " << Path << " with " << patch_name
                  << std::endl;
 
         {
            patch_name = *I;
            if (Debug == true)
               std::clog << "Patching " << Path << " with " << patch_name
                  << std::endl;
 

-           FILE *p = fopen(patch_name.c_str(), "r");
-           if (p == NULL) {
-              std::clog << "Could not open patch file " << patch_name << std::endl;
+           FileFd p;
+           // all patches are compressed, even if the name doesn't reflect it
+           if (p.Open(patch_name, FileFd::ReadOnly, FileFd::Gzip) == false) {
+              std::cerr << "Could not open patch file " << patch_name << std::endl;
+              _error->DumpErrors(std::cerr);

               abort();
            }
            patch.read_diff(p);
               abort();
            }
            patch.read_diff(p);

-           fclose(p);
+           p.Close();

         }
 
         if (Debug == true)
         }
 
         if (Debug == true)


@@ -657,11 +597,12 @@ class RredMethod : public pkgAcqMethod {
               stat(patch_name.c_str(), &bufpatch) != 0)
            return _error->Errno("stat", _("Failed to stat"));
 
               stat(patch_name.c_str(), &bufpatch) != 0)
            return _error->Errno("stat", _("Failed to stat"));
 

-        struct utimbuf timebuf;
-        timebuf.actime = bufbase.st_atime;
-        timebuf.modtime = bufpatch.st_mtime;
-        if (utime(Itm->DestFile.c_str(), &timebuf) != 0)
-           return _error->Errno("utime", _("Failed to set modification time"));
+        struct timeval times[2];
+        times[0].tv_sec = bufbase.st_atime;
+        times[1].tv_sec = bufpatch.st_mtime;
+        times[0].tv_usec = times[1].tv_usec = 0;
+        if (utimes(Itm->DestFile.c_str(), times) != 0)
+           return _error->Errno("utimes",_("Failed to set modification time"));

 
         if (stat(Itm->DestFile.c_str(), &bufbase) != 0)
            return _error->Errno("stat", _("Failed to stat"));
 
         if (stat(Itm->DestFile.c_str(), &bufbase) != 0)
            return _error->Errno("stat", _("Failed to stat"));


@@ -675,7 +616,7 @@ class RredMethod : public pkgAcqMethod {
       }
 
    public:
       }
 
    public:

-      RredMethod() : pkgAcqMethod("2.0",SingleInstance | SendConfig) {}
+      RredMethod() : pkgAcqMethod("2.0",SingleInstance | SendConfig), Debug(false) {}

 };
 
 int main(int argc, char **argv)
 };
 
 int main(int argc, char **argv)


@@ -697,10 +638,9 @@ int main(int argc, char **argv)
    }
 
    for (; i < argc; i++) {
    }
 
    for (; i < argc; i++) {

-      FILE *p;
-      p = fopen(argv[i], "r");
-      if (!p) {
-        perror(argv[i]);
+      FileFd p;
+      if (p.Open(argv[i], FileFd::ReadOnly) == false) {
+        _error->DumpErrors(std::cerr);

         exit(1);
       }
       patch.read_diff(p);
         exit(1);
       }
       patch.read_diff(p);