#include <apt-pkg/strutl.h>
#include <apt-pkg/hashes.h>
#include <apt-pkg/configuration.h>
+#include "aptmethod.h"
#include <stddef.h>
#include <iostream>
#include <vector>
#include <assert.h>
+#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
char *start;
size_t size;
char *free;
- struct MemBlock *next;
+ 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(int off)
+ explicit Change(size_t off)
{
offset = off;
del_cnt = add_cnt = add_len = 0;
std::list<struct Change>::iterator where;
size_t pos; // line number is as far left of iterator as possible
- bool pos_is_okay(void)
+ bool pos_is_okay(void) const
{
#ifdef POSDEBUG
size_t cpos = 0;
- std::list<struct Change>::iterator x;
+ std::list<struct Change>::const_iterator x;
for (x = changes.begin(); x != where; ++x) {
assert(x != changes.end());
cpos += x->offset + x->add_cnt;
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 *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;
+ if (f.Write(b, l) == false)
+ return false;
+ if (hash)
+ 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 *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, 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 *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')
}
}
- static void skip_lines(FILE *i, int n)
+ static void skip_lines(FileFd &i, int n)
{
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')
}
}
- static void dump_mem(FILE *o, char *p, size_t s, Hashes *hash) {
+ static void dump_mem(FileFd &o, char *p, size_t s, Hashes *hash) {
retry_fwrite(p, s, o, hash);
}
public:
- void read_diff(FileFd &f)
+ bool read_diff(FileFd &f, Hashes * const h)
{
char buffer[BLOCK_SIZE];
bool cmdwanted = true;
- Change ch(0);
- while(f.ReadLine(buffer, sizeof(buffer)))
- {
+ Change ch(std::numeric_limits<size_t>::max());
+ if (f.ReadLine(buffer, sizeof(buffer)) == NULL)
+ return _error->Error("Reading first line of patchfile %s failed", f.Name().c_str());
+ do {
+ if (h != NULL)
+ h->Add(buffer);
if (cmdwanted) {
char *m, *c;
size_t s, e;
- s = strtol(buffer, &m, 10);
- if (m == buffer) {
- s = e = ch.offset + ch.add_cnt;
- c = buffer;
- } else if (*m == ',') {
- m++;
+ errno = 0;
+ s = strtoul(buffer, &m, 10);
+ 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 == 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);
} else {
e = s;
c = m;
}
+ if (s > ch.offset)
+ return _error->Error("Parsing patchfile %s failed: Effected line is after previous effected line", f.Name().c_str());
switch(*c) {
case 'a':
cmdwanted = false;
ch.del_cnt = 0;
break;
case 'c':
+ if (unlikely(s == 0))
+ return _error->Error("Parsing patchfile %s failed: Change command can't effect line zero", f.Name().c_str());
cmdwanted = false;
ch.add = NULL;
ch.add_cnt = 0;
ch.del_cnt = e - s + 1;
break;
case 'd':
+ if (unlikely(s == 0))
+ return _error->Error("Parsing patchfile %s failed: Delete command can't effect line zero", f.Name().c_str());
ch.offset = s - 1;
ch.del_cnt = e - s + 1;
ch.add = NULL;
ch.add_len = 0;
filechanges.add_change(ch);
break;
+ default:
+ return _error->Error("Parsing patchfile %s failed: Unknown command", f.Name().c_str());
}
} else { /* !cmdwanted */
- if (buffer[0] == '.' && buffer[1] == '\n') {
+ if (strcmp(buffer, ".\n") == 0) {
cmdwanted = true;
filechanges.add_change(ch);
} else {
}
}
}
- }
+ } while(f.ReadLine(buffer, sizeof(buffer)));
+ return true;
}
- void write_diff(FILE *f)
+ void write_diff(FileFd &f)
{
unsigned long long line = 0;
std::list<struct Change>::reverse_iterator ch;
while (ch->del_cnt == 0 && ch->offset == 0)
++ch;
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 *hash = NULL)
{
std::list<struct Change>::iterator ch;
for (ch = filechanges.begin(); ch != filechanges.end(); ++ch) {
}
};
-class RredMethod : public pkgAcqMethod {
+class RredMethod : public aptMethod {
private:
bool Debug;
+ struct PDiffFile {
+ std::string FileName;
+ HashStringList ExpectedHashes;
+ PDiffFile(std::string const &FileName, HashStringList const &ExpectedHashes) :
+ FileName(FileName), ExpectedHashes(ExpectedHashes) {}
+ };
+
+ HashStringList ReadExpectedHashesForPatch(unsigned int const patch, std::string const &Message)
+ {
+ HashStringList ExpectedHashes;
+ for (char const * const * type = HashString::SupportedHashes(); *type != NULL; ++type)
+ {
+ std::string tagname;
+ strprintf(tagname, "Patch-%d-%s-Hash", patch, *type);
+ std::string const hashsum = LookupTag(Message, tagname.c_str());
+ if (hashsum.empty() == false)
+ ExpectedHashes.push_back(HashString(*type, hashsum));
+ }
+ return ExpectedHashes;
+ }
+
protected:
- virtual bool Fetch(FetchItem *Itm) {
+ virtual bool URIAcquire(std::string const &Message, FetchItem *Itm) APT_OVERRIDE {
Debug = _config->FindB("Debug::pkgAcquire::RRed", false);
URI Get = Itm->Uri;
std::string Path = Get.Host + Get.Path; // rred:/path - no host
} else
URIStart(Res);
- std::vector<std::string> patchpaths;
+ std::vector<PDiffFile> patchfiles;
Patch patch;
if (FileExists(Path + ".ed") == true)
- patchpaths.push_back(Path + ".ed");
+ {
+ HashStringList const ExpectedHashes = ReadExpectedHashesForPatch(0, Message);
+ std::string const FileName = Path + ".ed";
+ if (ExpectedHashes.usable() == false)
+ return _error->Error("No hashes found for uncompressed patch: %s", FileName.c_str());
+ patchfiles.push_back(PDiffFile(FileName, ExpectedHashes));
+ }
else
{
_error->PushToStack();
_error->RevertToStack();
std::string const baseName = Path + ".ed.";
+ unsigned int seen_patches = 0;
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);
+ {
+ HashStringList const ExpectedHashes = ReadExpectedHashesForPatch(seen_patches, Message);
+ if (ExpectedHashes.usable() == false)
+ return _error->Error("No hashes found for uncompressed patch %d: %s", seen_patches, p->c_str());
+ patchfiles.push_back(PDiffFile(*p, ExpectedHashes));
+ ++seen_patches;
+ }
+ }
}
std::string patch_name;
- for (std::vector<std::string>::iterator I = patchpaths.begin();
- I != patchpaths.end();
+ for (std::vector<PDiffFile>::iterator I = patchfiles.begin();
+ I != patchfiles.end();
++I)
{
- patch_name = *I;
+ patch_name = I->FileName;
if (Debug == true)
std::clog << "Patching " << Path << " with " << patch_name
<< std::endl;
FileFd p;
+ Hashes patch_hash(I->ExpectedHashes);
// 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();
+ if (p.Open(patch_name, FileFd::ReadOnly, FileFd::Gzip) == false ||
+ patch.read_diff(p, &patch_hash) == false)
+ {
+ _error->DumpErrors(std::cerr, GlobalError::DEBUG, false);
+ return false;
}
- patch.read_diff(p);
p.Close();
+ HashStringList const hsl = patch_hash.GetHashStringList();
+ if (hsl != I->ExpectedHashes)
+ return _error->Error("Hash Sum mismatch for uncompressed patch %s", patch_name.c_str());
}
if (Debug == true)
<< " and writing results to " << Itm->DestFile
<< std::endl;
- FILE *inp = fopen(Path.c_str(), "r");
- FILE *out = fopen(Itm->DestFile.c_str(), "w");
-
- Hashes hash;
+ 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::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);
- fclose(out);
- fclose(inp);
+ out.Close();
+ inp.Close();
if (Debug == true) {
std::clog << "rred: finished file patching of " << Path << "." << std::endl;
}
public:
- RredMethod() : pkgAcqMethod("2.0",SingleInstance | SendConfig), Debug(false) {}
+ RredMethod() : aptMethod("rred", "2.0",SingleInstance | SendConfig), Debug(false) {}
};
int main(int argc, char **argv)
_error->DumpErrors(std::cerr);
exit(1);
}
- patch.read_diff(p);
+ if (patch.read_diff(p, NULL) == false)
+ {
+ _error->DumpErrors(std::cerr);
+ exit(2);
+ }
}
if (just_diff) {
- patch.write_diff(stdout);
+ FileFd out;
+ out.OpenDescriptor(STDOUT_FILENO, FileFd::WriteOnly | FileFd::Create);
+ patch.write_diff(out);
} else {
- FILE *out, *inp;
- out = stdout;
- inp = stdin;
-
+ FileFd out, inp;
+ out.OpenDescriptor(STDOUT_FILENO, FileFd::WriteOnly | FileFd::Create);
+ inp.OpenDescriptor(STDIN_FILENO, FileFd::ReadOnly);
patch.apply_against_file(out, inp);
}
return 0;
projects / apt.git / blobdiff