#include <config.h>
+#include <apt-pkg/init.h>
#include <apt-pkg/fileutl.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 "aptmethod.h"
#include <stddef.h>
#include <iostream>
char *free;
MemBlock *next;
- MemBlock(size_t size) : size(size), next(NULL)
+ explicit MemBlock(size_t size) : size(size), next(NULL)
{
free = start = new char[size];
}
size_t add_len; /* bytes */
char *add;
- Change(size_t off)
+ explicit Change(size_t off)
{
offset = off;
del_cnt = add_cnt = add_len = 0;
FileChanges filechanges;
MemBlock add_text;
- static bool retry_fwrite(char *b, size_t l, FILE *f, Hashes *hash)
+ static bool retry_fwrite(char *b, size_t l, FileFd &f, Hashes * const start_hash, Hashes * const end_hash = nullptr) APT_NONNULL(1)
{
- 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;
+ if (f.Write(b, l) == false)
+ return false;
+ if (start_hash)
+ start_hash->Add((unsigned char*)b, l);
+ if (end_hash)
+ end_hash->Add((unsigned char*)b, l);
+ return true;
}
- static void dump_rest(FILE *o, FILE *i, Hashes *hash)
+ static void dump_rest(FileFd &o, FileFd &i,
+ Hashes * const start_hash, Hashes * const end_hash)
{
char buffer[BLOCK_SIZE];
- size_t l;
- while (0 < (l = fread(buffer, 1, sizeof(buffer), i))) {
- if (!retry_fwrite(buffer, l, o, hash))
+ unsigned long long l = 0;
+ while (i.Read(buffer, sizeof(buffer), &l)) {
+ if (l ==0 || !retry_fwrite(buffer, l, o, start_hash, end_hash))
break;
}
}
- static void dump_lines(FILE *o, FILE *i, size_t n, Hashes *hash)
+ static void dump_lines(FileFd &o, FileFd &i, size_t n,
+ Hashes * const start_hash, Hashes * const end_hash)
{
char buffer[BLOCK_SIZE];
while (n > 0) {
- if (fgets(buffer, sizeof(buffer), i) == 0)
+ if (i.ReadLine(buffer, sizeof(buffer)) == NULL)
buffer[0] = '\0';
size_t const l = strlen(buffer);
if (l == 0 || buffer[l-1] == '\n')
n--;
- retry_fwrite(buffer, l, o, hash);
+ retry_fwrite(buffer, l, o, start_hash, end_hash);
}
}
- static void skip_lines(FILE *i, int n)
+ static void skip_lines(FileFd &i, int n, Hashes * const start_hash)
{
char buffer[BLOCK_SIZE];
while (n > 0) {
- if (fgets(buffer, sizeof(buffer), i) == 0)
+ if (i.ReadLine(buffer, sizeof(buffer)) == NULL)
buffer[0] = '\0';
size_t const l = strlen(buffer);
if (l == 0 || buffer[l-1] == '\n')
n--;
+ if (start_hash)
+ start_hash->Add((unsigned char*)buffer, l);
}
}
- static void dump_mem(FILE *o, char *p, size_t s, Hashes *hash) {
- retry_fwrite(p, s, o, hash);
+ static void dump_mem(FileFd &o, char *p, size_t s, Hashes *hash) APT_NONNULL(2) {
+ retry_fwrite(p, s, o, nullptr, hash);
}
public:
size_t s, e;
errno = 0;
s = strtoul(buffer, &m, 10);
- if (unlikely(m == buffer || s == ULONG_MAX || errno != 0))
+ if (unlikely(m == buffer || s == std::numeric_limits<unsigned long>::max() || errno != 0))
return _error->Error("Parsing patchfile %s failed: Expected an effected line start", f.Name().c_str());
else if (*m == ',') {
++m;
e = strtol(m, &c, 10);
- if (unlikely(m == c || e == ULONG_MAX || errno != 0))
+ if (unlikely(m == c || e == std::numeric_limits<unsigned long>::max() || errno != 0))
return _error->Error("Parsing patchfile %s failed: Expected an effected line end", f.Name().c_str());
if (unlikely(e < s))
return _error->Error("Parsing patchfile %s failed: Effected lines end %lu is before start %lu", f.Name().c_str(), e, s);
return true;
}
- void write_diff(FILE *f)
+ void write_diff(FileFd &f)
{
unsigned long long line = 0;
std::list<struct Change>::reverse_iterator 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)
+ {
++ch;
+ if (unlikely(ch == filechanges.rend()))
+ return;
+ }
line -= ch->del_cnt;
+ std::string buf;
if (ch->add_cnt > 0) {
if (ch->del_cnt == 0) {
- fprintf(f, "%llua\n", line);
+ strprintf(buf, "%llua\n", line);
} else if (ch->del_cnt == 1) {
- fprintf(f, "%lluc\n", line+1);
+ strprintf(buf, "%lluc\n", line+1);
} else {
- fprintf(f, "%llu,%lluc\n", line+1, line+ch->del_cnt);
+ strprintf(buf, "%llu,%lluc\n", line+1, line+ch->del_cnt);
}
+ f.Write(buf.c_str(), buf.length());
mg_i = ch;
do {
dump_mem(f, mg_i->add, mg_i->add_len, NULL);
} while (mg_i-- != mg_e);
- fprintf(f, ".\n");
+ buf = ".\n";
+ f.Write(buf.c_str(), buf.length());
} else if (ch->del_cnt == 1) {
- fprintf(f, "%llud\n", line+1);
+ strprintf(buf, "%llud\n", line+1);
+ f.Write(buf.c_str(), buf.length());
} else if (ch->del_cnt > 1) {
- fprintf(f, "%llu,%llud\n", line+1, line+ch->del_cnt);
+ strprintf(buf, "%llu,%llud\n", line+1, line+ch->del_cnt);
+ f.Write(buf.c_str(), buf.length());
}
line -= ch->offset;
}
}
- void apply_against_file(FILE *out, FILE *in, Hashes *hash = NULL)
+ void apply_against_file(FileFd &out, FileFd &in,
+ Hashes * const start_hash = nullptr, Hashes * const end_hash = nullptr)
{
std::list<struct Change>::iterator 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, start_hash, end_hash);
+ skip_lines(in, ch->del_cnt, start_hash);
+ if (ch->add_len != 0)
+ dump_mem(out, ch->add, ch->add_len, end_hash);
}
- dump_rest(out, in, hash);
+ dump_rest(out, in, start_hash, end_hash);
+ out.Flush();
}
};
-class RredMethod : public pkgAcqMethod {
+class RredMethod : public aptMethod {
private:
bool Debug;
}
protected:
- virtual bool URIAcquire(std::string const &Message, FetchItem *Itm) {
- Debug = _config->FindB("Debug::pkgAcquire::RRed", false);
+ virtual bool URIAcquire(std::string const &Message, FetchItem *Itm) APT_OVERRIDE {
+ Debug = DebugEnabled();
URI Get = Itm->Uri;
std::string Path = Get.Host + Get.Path; // rred:/path - no host
std::vector<PDiffFile> patchfiles;
Patch patch;
+ HashStringList StartHashes;
+ for (char const * const * type = HashString::SupportedHashes(); *type != nullptr; ++type)
+ {
+ std::string tagname;
+ strprintf(tagname, "Start-%s-Hash", *type);
+ std::string const hashsum = LookupTag(Message, tagname.c_str());
+ if (hashsum.empty() == false)
+ StartHashes.push_back(HashString(*type, hashsum));
+ }
+
if (FileExists(Path + ".ed") == true)
{
HashStringList const ExpectedHashes = ReadExpectedHashesForPatch(0, Message);
if (p.Open(patch_name, FileFd::ReadOnly, FileFd::Gzip) == false ||
patch.read_diff(p, &patch_hash) == false)
{
- _error->DumpErrors(std::cerr);
+ _error->DumpErrors(std::cerr, GlobalError::DEBUG, false);
return false;
}
p.Close();
<< " and writing results to " << Itm->DestFile
<< std::endl;
- FILE *inp = fopen(Path.c_str(), "r");
- FILE *out = fopen(Itm->DestFile.c_str(), "w");
+ FileFd inp, out;
+ if (inp.Open(Path, FileFd::ReadOnly, FileFd::Extension) == false)
+ {
+ std::cerr << "FAILED to open inp " << Path << std::endl;
+ return _error->Error("Failed to open inp %s", Path.c_str());
+ }
+ if (out.Open(Itm->DestFile, FileFd::WriteOnly | FileFd::Create | FileFd::Empty | FileFd::BufferedWrite, FileFd::Extension) == false)
+ {
+ std::cerr << "FAILED to open out " << Itm->DestFile << std::endl;
+ return _error->Error("Failed to open out %s", Itm->DestFile.c_str());
+ }
- Hashes hash(Itm->ExpectedHashes);
- patch.apply_against_file(out, inp, &hash);
+ Hashes end_hash(Itm->ExpectedHashes);
+ if (StartHashes.usable())
+ {
+ Hashes start_hash(StartHashes);
+ patch.apply_against_file(out, inp, &start_hash, &end_hash);
+ if (start_hash.GetHashStringList() != StartHashes)
+ _error->Error("The input file hadn't the expected hash!");
+ }
+ else
+ patch.apply_against_file(out, inp, nullptr, &end_hash);
- fclose(out);
- fclose(inp);
+ out.Close();
+ inp.Close();
+
+ if (_error->PendingError() == true) {
+ std::cerr << "FAILED to read or write files" << std::endl;
+ return false;
+ }
if (Debug == true) {
std::clog << "rred: finished file patching of " << Path << "." << std::endl;
struct stat bufbase, bufpatch;
if (stat(Path.c_str(), &bufbase) != 0 ||
stat(patch_name.c_str(), &bufpatch) != 0)
- return _error->Errno("stat", _("Failed to stat"));
+ return _error->Errno("stat", _("Failed to stat %s"), Path.c_str());
struct timeval times[2];
times[0].tv_sec = bufbase.st_atime;
return _error->Errno("utimes",_("Failed to set modification time"));
if (stat(Itm->DestFile.c_str(), &bufbase) != 0)
- return _error->Errno("stat", _("Failed to stat"));
+ return _error->Errno("stat", _("Failed to stat %s"), Itm->DestFile.c_str());
Res.LastModified = bufbase.st_mtime;
Res.Size = bufbase.st_size;
- Res.TakeHashes(hash);
+ Res.TakeHashes(end_hash);
URIDone(Res);
return true;
}
- bool Configuration(std::string Message)
- {
- if (pkgAcqMethod::Configuration(Message) == false)
- return false;
-
- DropPrivsOrDie();
-
- return true;
- }
-
public:
- RredMethod() : pkgAcqMethod("2.0",SingleInstance | SendConfig), Debug(false) {}
+ RredMethod() : aptMethod("rred", "2.0", SendConfig), Debug(false) {}
};
int main(int argc, char **argv)
{
int i;
bool just_diff = true;
+ bool test = false;
Patch patch;
if (argc <= 1) {
- RredMethod Mth;
- return Mth.Run();
+ return RredMethod().Run();
}
- if (argc > 1 && strcmp(argv[1], "-f") == 0) {
+ // Usage: rred -t input output diff ...
+ if (argc > 1 && strcmp(argv[1], "-t") == 0) {
+ // Read config files so we see compressors.
+ pkgInitConfig(*_config);
+ just_diff = false;
+ test = true;
+ i = 4;
+ } else if (argc > 1 && strcmp(argv[1], "-f") == 0) {
just_diff = false;
i = 2;
} else {
}
}
- if (just_diff) {
- patch.write_diff(stdout);
+ if (test) {
+ FileFd out, inp;
+ std::cerr << "Patching " << argv[2] << " into " << argv[3] << "\n";
+ inp.Open(argv[2], FileFd::ReadOnly,FileFd::Extension);
+ out.Open(argv[3], FileFd::WriteOnly | FileFd::Create | FileFd::Empty | FileFd::BufferedWrite, FileFd::Extension);
+ patch.apply_against_file(out, inp);
+ out.Close();
+ } else if (just_diff) {
+ FileFd out;
+ out.OpenDescriptor(STDOUT_FILENO, FileFd::WriteOnly | FileFd::Create);
+ patch.write_diff(out);
+ out.Close();
} else {
- FILE *out, *inp;
- out = stdout;
- inp = stdin;
-
+ FileFd out, inp;
+ out.OpenDescriptor(STDOUT_FILENO, FileFd::WriteOnly | FileFd::Create | FileFd::BufferedWrite);
+ inp.OpenDescriptor(STDIN_FILENO, FileFd::ReadOnly);
patch.apply_against_file(out, inp);
+ out.Close();
}
return 0;
}
projects / apt.git / blobdiff