Implement GetFileDetails.

dll/base.cpp

@@ -256,6 +256,39 @@ std::string canonical_path(std::string path)
     return output;
 }
 
+bool file_exists_(std::string full_path)
+{
+#if defined(STEAM_WIN32)
+    struct _stat buffer;
+    if (_wstat(utf8_decode(full_path).c_str(), &buffer) != 0)
+        return false;
+
+    if ( buffer.st_mode & _S_IFDIR)
+        return false;
+#else
+    struct stat buffer;
+    if (stat(full_path.c_str(), &buffer) != 0)
+        return false;
+
+    if (S_ISDIR(buffer.st_mode))
+        return false;
+#endif
+
+    return true;
+}
+
+unsigned int file_size_(std::string full_path)
+{
+#if defined(STEAM_WIN32)
+    struct _stat buffer = {};
+    if (_wstat(utf8_decode(full_path).c_str(), &buffer) != 0) return 0;
+#else
+    struct stat buffer = {};
+    if (stat (full_path.c_str(), &buffer) != 0) return 0;
+#endif
+    return buffer.st_size;
+}
+
 static void steam_auth_ticket_callback(void *object, Common_Message *msg)
 {
     PRINT_DEBUG("steam_auth_ticket_callback\n");

dll/base.h

@@ -101,6 +101,8 @@ std::string get_full_lib_path();
 std::string get_full_program_path();
 std::string get_current_path();
 std::string canonical_path(std::string path);
+bool file_exists_(std::string full_path);
+unsigned int file_size_(std::string full_path);
 
 #define DEFAULT_CB_TIMEOUT 0.002
 

dll/local_storage.cpp

@@ -607,24 +607,7 @@ bool Local_Storage::file_exists(std::string folder, std::string file)
     }
 
     std::string full_path = save_directory + appid + folder + file;
-
+    return file_exists_(full_path);
-#if defined(STEAM_WIN32)
-    struct _stat buffer;
-    if (_wstat(utf8_decode(full_path).c_str(), &buffer) != 0)
-        return false;
-
-    if ( buffer.st_mode & _S_IFDIR)
-        return false;
-#else
-    struct stat buffer;
-    if (stat(full_path.c_str(), &buffer) != 0)
-        return false;
-
-    if (S_ISDIR(buffer.st_mode))
-        return false;
-#endif
-
-    return true;
 }
 
 unsigned int Local_Storage::file_size(std::string folder, std::string file)
@@ -635,15 +618,7 @@ unsigned int Local_Storage::file_size(std::string folder, std::string file)
     }
 
     std::string full_path = save_directory + appid + folder + file;
-
+    return file_size_(full_path);
-#if defined(STEAM_WIN32)
-    struct _stat buffer = {};
-    if (_wstat(utf8_decode(full_path).c_str(), &buffer) != 0) return 0;
-#else
-    struct stat buffer = {};
-    if (stat (full_path.c_str(), &buffer) != 0) return 0;
-#endif
-    return buffer.st_size;
 }
 
 bool Local_Storage::file_delete(std::string folder, std::string file)

dll/steam_apps.cpp

@@ -16,6 +16,7 @@
    <http://www.gnu.org/licenses/>.  */
 
 #include "steam_apps.h"
+#include "../sha/sha1.hpp"
 
 Steam_Apps::Steam_Apps(Settings *settings, class SteamCallResults *callback_results)
 {
@@ -201,6 +202,7 @@ uint32 Steam_Apps::GetInstalledDepots( DepotId_t *pvecDepots, uint32 cMaxDepots
 uint32 Steam_Apps::GetAppInstallDir( AppId_t appID, char *pchFolder, uint32 cchFolderBufferSize )
 {
     PRINT_DEBUG("GetAppInstallDir %u %p %u\n", appID, pchFolder, cchFolderBufferSize);
+    std::lock_guard<std::recursive_mutex> lock(global_mutex);
     //TODO return real path instead of dll path
     std::string installed_path = settings->getAppInstallPath(appID);
 
@@ -279,8 +281,23 @@ void Steam_Apps::RequestAllProofOfPurchaseKeys()
 STEAM_CALL_RESULT( FileDetailsResult_t )
 SteamAPICall_t Steam_Apps::GetFileDetails( const char* pszFileName )
 {
-    PRINT_DEBUG("GetFileDetails\n");
+    PRINT_DEBUG("GetFileDetails %s\n", pszFileName);
-    return 0;
+    FileDetailsResult_t data = {};
+    //TODO? this function should only return found if file is actually part of the steam depots
+    if (file_exists_(pszFileName)) {
+        data.m_eResult = k_EResultOK; //
+        std::ifstream stream(utf8_decode(pszFileName), std::ios::binary);
+        SHA1 checksum;
+        checksum.update(stream);
+        checksum.final().copy((char *)data.m_FileSHA, sizeof(data.m_FileSHA));
+        data.m_ulFileSize = file_size_(pszFileName);
+        //TODO data.m_unFlags; 0 is file //TODO: check if 64 is folder
+    } else {
+        data.m_eResult = k_EResultFileNotFound;
+    }
+
+    std::lock_guard<std::recursive_mutex> lock(global_mutex);
+    return callback_results->addCallResult(data.k_iCallback, &data, sizeof(data));
 }
 
 // Get command line if game was launched via Steam URL, e.g. steam://run/<appid>//<command line>/.

sha/sha1.hpp

@@ -0,0 +1,335 @@
+/*
+    sha1.hpp - source code of
+
+    ============
+    SHA-1 in C++
+    ============
+
+    100% Public Domain.
+
+    Original C Code
+        -- Steve Reid <steve@edmweb.com>
+    Small changes to fit into bglibs
+        -- Bruce Guenter <bruce@untroubled.org>
+    Translation to simpler C++ Code
+        -- Volker Diels-Grabsch <v@njh.eu>
+    Safety fixes
+        -- Eugene Hopkinson <slowriot at voxelstorm dot com>
+    Header-only library
+        -- Zlatko Michailov <zlatko@michailov.org>
+*/
+
+#ifndef SHA1_HPP
+#define SHA1_HPP
+
+
+#include <cstdint>
+#include <fstream>
+#include <iomanip>
+#include <iostream>
+#include <sstream>
+#include <string>
+
+
+class SHA1
+{
+public:
+    SHA1();
+    void update(const std::string &s);
+    void update(std::istream &is);
+    std::string final();
+    static std::string from_file(const std::string &filename);
+
+private:
+    uint32_t digest[5];
+    std::string buffer;
+    uint64_t transforms;
+};
+
+
+static const size_t BLOCK_INTS = 16;  /* number of 32bit integers per SHA1 block */
+static const size_t BLOCK_BYTES = BLOCK_INTS * 4;
+
+
+inline static void reset(uint32_t digest[], std::string &buffer, uint64_t &transforms)
+{
+    /* SHA1 initialization constants */
+    digest[0] = 0x67452301;
+    digest[1] = 0xefcdab89;
+    digest[2] = 0x98badcfe;
+    digest[3] = 0x10325476;
+    digest[4] = 0xc3d2e1f0;
+
+    /* Reset counters */
+    buffer = "";
+    transforms = 0;
+}
+
+
+inline static uint32_t rol(const uint32_t value, const size_t bits)
+{
+    return (value << bits) | (value >> (32 - bits));
+}
+
+
+inline static uint32_t blk(const uint32_t block[BLOCK_INTS], const size_t i)
+{
+    return rol(block[(i+13)&15] ^ block[(i+8)&15] ^ block[(i+2)&15] ^ block[i], 1);
+}
+
+
+/*
+ * (R0+R1), R2, R3, R4 are the different operations used in SHA1
+ */
+
+inline static void R0(const uint32_t block[BLOCK_INTS], const uint32_t v, uint32_t &w, const uint32_t x, const uint32_t y, uint32_t &z, const size_t i)
+{
+    z += ((w&(x^y))^y) + block[i] + 0x5a827999 + rol(v, 5);
+    w = rol(w, 30);
+}
+
+
+inline static void R1(uint32_t block[BLOCK_INTS], const uint32_t v, uint32_t &w, const uint32_t x, const uint32_t y, uint32_t &z, const size_t i)
+{
+    block[i] = blk(block, i);
+    z += ((w&(x^y))^y) + block[i] + 0x5a827999 + rol(v, 5);
+    w = rol(w, 30);
+}
+
+
+inline static void R2(uint32_t block[BLOCK_INTS], const uint32_t v, uint32_t &w, const uint32_t x, const uint32_t y, uint32_t &z, const size_t i)
+{
+    block[i] = blk(block, i);
+    z += (w^x^y) + block[i] + 0x6ed9eba1 + rol(v, 5);
+    w = rol(w, 30);
+}
+
+
+inline static void R3(uint32_t block[BLOCK_INTS], const uint32_t v, uint32_t &w, const uint32_t x, const uint32_t y, uint32_t &z, const size_t i)
+{
+    block[i] = blk(block, i);
+    z += (((w|x)&y)|(w&x)) + block[i] + 0x8f1bbcdc + rol(v, 5);
+    w = rol(w, 30);
+}
+
+
+inline static void R4(uint32_t block[BLOCK_INTS], const uint32_t v, uint32_t &w, const uint32_t x, const uint32_t y, uint32_t &z, const size_t i)
+{
+    block[i] = blk(block, i);
+    z += (w^x^y) + block[i] + 0xca62c1d6 + rol(v, 5);
+    w = rol(w, 30);
+}
+
+
+/*
+ * Hash a single 512-bit block. This is the core of the algorithm.
+ */
+
+inline static void transform(uint32_t digest[], uint32_t block[BLOCK_INTS], uint64_t &transforms)
+{
+    /* Copy digest[] to working vars */
+    uint32_t a = digest[0];
+    uint32_t b = digest[1];
+    uint32_t c = digest[2];
+    uint32_t d = digest[3];
+    uint32_t e = digest[4];
+
+    /* 4 rounds of 20 operations each. Loop unrolled. */
+    R0(block, a, b, c, d, e,  0);
+    R0(block, e, a, b, c, d,  1);
+    R0(block, d, e, a, b, c,  2);
+    R0(block, c, d, e, a, b,  3);
+    R0(block, b, c, d, e, a,  4);
+    R0(block, a, b, c, d, e,  5);
+    R0(block, e, a, b, c, d,  6);
+    R0(block, d, e, a, b, c,  7);
+    R0(block, c, d, e, a, b,  8);
+    R0(block, b, c, d, e, a,  9);
+    R0(block, a, b, c, d, e, 10);
+    R0(block, e, a, b, c, d, 11);
+    R0(block, d, e, a, b, c, 12);
+    R0(block, c, d, e, a, b, 13);
+    R0(block, b, c, d, e, a, 14);
+    R0(block, a, b, c, d, e, 15);
+    R1(block, e, a, b, c, d,  0);
+    R1(block, d, e, a, b, c,  1);
+    R1(block, c, d, e, a, b,  2);
+    R1(block, b, c, d, e, a,  3);
+    R2(block, a, b, c, d, e,  4);
+    R2(block, e, a, b, c, d,  5);
+    R2(block, d, e, a, b, c,  6);
+    R2(block, c, d, e, a, b,  7);
+    R2(block, b, c, d, e, a,  8);
+    R2(block, a, b, c, d, e,  9);
+    R2(block, e, a, b, c, d, 10);
+    R2(block, d, e, a, b, c, 11);
+    R2(block, c, d, e, a, b, 12);
+    R2(block, b, c, d, e, a, 13);
+    R2(block, a, b, c, d, e, 14);
+    R2(block, e, a, b, c, d, 15);
+    R2(block, d, e, a, b, c,  0);
+    R2(block, c, d, e, a, b,  1);
+    R2(block, b, c, d, e, a,  2);
+    R2(block, a, b, c, d, e,  3);
+    R2(block, e, a, b, c, d,  4);
+    R2(block, d, e, a, b, c,  5);
+    R2(block, c, d, e, a, b,  6);
+    R2(block, b, c, d, e, a,  7);
+    R3(block, a, b, c, d, e,  8);
+    R3(block, e, a, b, c, d,  9);
+    R3(block, d, e, a, b, c, 10);
+    R3(block, c, d, e, a, b, 11);
+    R3(block, b, c, d, e, a, 12);
+    R3(block, a, b, c, d, e, 13);
+    R3(block, e, a, b, c, d, 14);
+    R3(block, d, e, a, b, c, 15);
+    R3(block, c, d, e, a, b,  0);
+    R3(block, b, c, d, e, a,  1);
+    R3(block, a, b, c, d, e,  2);
+    R3(block, e, a, b, c, d,  3);
+    R3(block, d, e, a, b, c,  4);
+    R3(block, c, d, e, a, b,  5);
+    R3(block, b, c, d, e, a,  6);
+    R3(block, a, b, c, d, e,  7);
+    R3(block, e, a, b, c, d,  8);
+    R3(block, d, e, a, b, c,  9);
+    R3(block, c, d, e, a, b, 10);
+    R3(block, b, c, d, e, a, 11);
+    R4(block, a, b, c, d, e, 12);
+    R4(block, e, a, b, c, d, 13);
+    R4(block, d, e, a, b, c, 14);
+    R4(block, c, d, e, a, b, 15);
+    R4(block, b, c, d, e, a,  0);
+    R4(block, a, b, c, d, e,  1);
+    R4(block, e, a, b, c, d,  2);
+    R4(block, d, e, a, b, c,  3);
+    R4(block, c, d, e, a, b,  4);
+    R4(block, b, c, d, e, a,  5);
+    R4(block, a, b, c, d, e,  6);
+    R4(block, e, a, b, c, d,  7);
+    R4(block, d, e, a, b, c,  8);
+    R4(block, c, d, e, a, b,  9);
+    R4(block, b, c, d, e, a, 10);
+    R4(block, a, b, c, d, e, 11);
+    R4(block, e, a, b, c, d, 12);
+    R4(block, d, e, a, b, c, 13);
+    R4(block, c, d, e, a, b, 14);
+    R4(block, b, c, d, e, a, 15);
+
+    /* Add the working vars back into digest[] */
+    digest[0] += a;
+    digest[1] += b;
+    digest[2] += c;
+    digest[3] += d;
+    digest[4] += e;
+
+    /* Count the number of transformations */
+    transforms++;
+}
+
+
+inline static void buffer_to_block(const std::string &buffer, uint32_t block[BLOCK_INTS])
+{
+    /* Convert the std::string (byte buffer) to a uint32_t array (MSB) */
+    for (size_t i = 0; i < BLOCK_INTS; i++)
+    {
+        block[i] = (buffer[4*i+3] & 0xff)
+                   | (buffer[4*i+2] & 0xff)<<8
+                   | (buffer[4*i+1] & 0xff)<<16
+                   | (buffer[4*i+0] & 0xff)<<24;
+    }
+}
+
+
+inline SHA1::SHA1()
+{
+    reset(digest, buffer, transforms);
+}
+
+
+inline void SHA1::update(const std::string &s)
+{
+    std::istringstream is(s);
+    update(is);
+}
+
+
+inline void SHA1::update(std::istream &is)
+{
+    while (true)
+    {
+        char sbuf[BLOCK_BYTES];
+        is.read(sbuf, BLOCK_BYTES - buffer.size());
+        buffer.append(sbuf, (std::size_t)is.gcount());
+        if (buffer.size() != BLOCK_BYTES)
+        {
+            return;
+        }
+        uint32_t block[BLOCK_INTS];
+        buffer_to_block(buffer, block);
+        transform(digest, block, transforms);
+        buffer.clear();
+    }
+}
+
+
+/*
+ * Add padding and return the message digest.
+ */
+
+inline std::string SHA1::final()
+{
+    /* Total number of hashed bits */
+    uint64_t total_bits = (transforms*BLOCK_BYTES + buffer.size()) * 8;
+
+    /* Padding */
+    buffer += (char)0x80;
+    size_t orig_size = buffer.size();
+    while (buffer.size() < BLOCK_BYTES)
+    {
+        buffer += (char)0x00;
+    }
+
+    uint32_t block[BLOCK_INTS];
+    buffer_to_block(buffer, block);
+
+    if (orig_size > BLOCK_BYTES - 8)
+    {
+        transform(digest, block, transforms);
+        for (size_t i = 0; i < BLOCK_INTS - 2; i++)
+        {
+            block[i] = 0;
+        }
+    }
+
+    /* Append total_bits, split this uint64_t into two uint32_t */
+    block[BLOCK_INTS - 1] = (uint32_t)total_bits;
+    block[BLOCK_INTS - 2] = (uint32_t)(total_bits >> 32);
+    transform(digest, block, transforms);
+
+    unsigned char output[20];
+    for (size_t i = 0; i < sizeof(digest) / sizeof(digest[0]); i++)
+    {
+        output[i*4] = digest[i] >> 24;
+        output[i*4 + 1] = (digest[i] >> 16) & 0xFF;
+        output[i*4 + 2] = (digest[i] >> 8) & 0xFF;
+        output[i*4 + 3] = (digest[i]) & 0xFF;
+    }
+
+    /* Reset for next run */
+    reset(digest, buffer, transforms);
+
+    return std::string((char *)output, sizeof(output));
+}
+
+
+inline std::string SHA1::from_file(const std::string &filename)
+{
+    std::ifstream stream(filename.c_str(), std::ios::binary);
+    SHA1 checksum;
+    checksum.update(stream);
+    return checksum.final();
+}
+
+
+#endif /* SHA1_HPP */