projects / apt.git / blame
| Commit | Line | Data |
|---|---|---|
| c31c1dde | 1 | // Cryptographic API Base |
| ea542140 | 2 | #include <config.h> |
| c31c1dde | 3 | |
| 453b82a3 DK |
4 | #include <apt-pkg/fileutl.h> |
| 5 | ||
| 6 | #include <algorithm> | |
| c31c1dde DK |
7 | #include <unistd.h> |
| 8 | #include "hashsum_template.h" | |
| 9 | ||
| 10 | // Summation::AddFD - Add content of file into the checksum /*{{{*/ | |
| 11 | // --------------------------------------------------------------------- | |
| 12 | /* */ | |
| 650faab0 | 13 | bool SummationImplementation::AddFD(int const Fd, unsigned long long Size) { |
| c31c1dde | 14 | unsigned char Buf[64 * 64]; |
| 9ce3cfc9 | 15 | bool const ToEOF = (Size == 0); |
| c31c1dde DK |
16 | while (Size != 0 || ToEOF) |
| 17 | { | |
| 650faab0 | 18 | unsigned long long n = sizeof(Buf); |
| 8f3ba4e8 | 19 | if (!ToEOF) n = std::min(Size, n); |
| 9ce3cfc9 | 20 | ssize_t const Res = read(Fd, Buf, n); |
| 650faab0 | 21 | if (Res < 0 || (!ToEOF && Res != (ssize_t) n)) // error, or short read |
| c31c1dde DK |
22 | return false; |
| 23 | if (ToEOF && Res == 0) // EOF | |
| 24 | break; | |
| 25 | Size -= Res; | |
| 26 | Add(Buf,Res); | |
| 27 | } | |
| 28 | return true; | |
| 109eb151 DK |
29 | } |
| 30 | bool SummationImplementation::AddFD(FileFd &Fd, unsigned long long Size) { | |
| 31 | unsigned char Buf[64 * 64]; | |
| 9ce3cfc9 | 32 | bool const ToEOF = (Size == 0); |
| 109eb151 DK |
33 | while (Size != 0 || ToEOF) |
| 34 | { | |
| 35 | unsigned long long n = sizeof(Buf); | |
| 36 | if (!ToEOF) n = std::min(Size, n); | |
| 37 | unsigned long long a = 0; | |
| 38 | if (Fd.Read(Buf, n, &a) == false) // error | |
| 39 | return false; | |
| 40 | if (ToEOF == false) | |
| 41 | { | |
| 42 | if (a != n) // short read | |
| 43 | return false; | |
| 44 | } | |
| 45 | else if (a == 0) // EOF | |
| 46 | break; | |
| 47 | Size -= a; | |
| 48 | Add(Buf, a); | |
| 49 | } | |
| 50 | return true; | |
| c31c1dde DK |
51 | } |
| 52 | /*}}}*/ |