From a1b64080d1525a7a65e53f33d1a3fd257957e732 Mon Sep 17 00:00:00 2001
From: Gabriele Contini <contini.mailing@gmail.com>
Date: 周日, 15 3月 2020 11:00:39 +0800
Subject: [PATCH] fix compilation errors

---
 src/library/os/linux/os-linux.cpp |  323 +++++++++++++++++++++++++++++++++++------------------
 1 files changed, 215 insertions(+), 108 deletions(-)

diff --git a/src/library/os/linux/os-linux.cpp b/src/library/os/linux/os-linux.cpp
index 2028d47..57fb028 100644
--- a/src/library/os/linux/os-linux.cpp
+++ b/src/library/os/linux/os-linux.cpp
@@ -1,136 +1,243 @@
 #include <paths.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <cstring>
-#include <string>
-#include <system_error>
-#include <unistd.h>
-#include <sstream>
-#include <sys/ioctl.h>
 #include <sys/stat.h>
-#include "../os.hpp"
-#include "../../base/public-key.h"
-#include <openssl/evp.h>
-#include <openssl/bio.h>
-#include <openssl/pem.h>
+#include <stdio.h>
+#include "../os.h"
+#include "../../base/logger.h"
 
-namespace license {
+#include <mntent.h>
+#include <dirent.h>
+#include <sys/utsname.h>
+#ifdef _DEBUG
+#include <valgrind/memcheck.h>
+#endif
 
-using namespace std;
+#ifdef USE_DBUS
+#include <dbus-1.0/dbus/dbus.h>
+#endif
 
-vector<AdapterInfo> OsFunctions::getAdapterInfos() {
-	return vector<AdapterInfo>();
-}
-vector<DiskInfo> OsFunctions::getDiskInfos() {
-	struct stat filename_stat, mount_stat;
-	static char discard[1024];
-	char device[64], name[64], type[64];
-	FILE *mounts = fopen(_PATH_MOUNTED, "r");
+/**
+ *Usually uuid are hex number separated by "-". this method read up to 8 hex
+ *numbers skipping - characters.
+ *@param uuid uuid as read in /dev/disk/by-uuid
+ *@param buffer_out: unsigned char buffer[8] output buffer for result
+ */
+static void parseUUID(const char *uuid, unsigned char *buffer_out, unsigned int out_size) {
+	unsigned int i, j;
+	char *hexuuid;
+	unsigned char cur_character;
+	// remove characters not in hex set
+	size_t len = strlen(uuid);
+	hexuuid = (char *)malloc(sizeof(char) * len);
+	memset(buffer_out, 0, out_size);
+	memset(hexuuid, 0, sizeof(char) * len);
 
-	while (fscanf(mounts, "%64s %64s %64s %1024[^\n]", device, name, type,
-			discard) != EOF) {
-		if (stat(device, &mount_stat) != 0)
+	for (i = 0, j = 0; i < len; i++) {
+		if (isxdigit(uuid[i])) {
+			hexuuid[j] = uuid[i];
+			j++;
+		} else {
+			// skip
 			continue;
-		if (filename_stat.st_dev == mount_stat.st_rdev)
-			fprintf(stderr, "device: %s; name: %s; type: %s\n", device, name,
-					type);
+		}
+	}
+	if (j % 2 == 1) {
+		hexuuid[j++] = '0';
+	}
+	hexuuid[j] = '\0';
+	for (i = 0; i < j / 2; i++) {
+		sscanf(&hexuuid[i * 2], "%2hhx", &cur_character);
+		buffer_out[i % out_size] = buffer_out[i % out_size] ^ cur_character;
 	}
 
-	return vector<DiskInfo>();
+	free(hexuuid);
 }
 
-string OsFunctions::getModuleName() {
-	char path[2048] = { 0 };
-	string strPath;
-	string result;
-	pid_t pid = getpid();
-	const string pidstr = to_string(((long) pid));
-	strPath = string("/proc/") + pidstr + "/exe";
-	const char * proc_path = strPath.c_str();
-	int ch = readlink(proc_path, path, 2048);
-	if (ch != -1) {
-		path[ch] = '\0';
-		result = string(path);
+#define MAX_UNITS 20
+FUNCTION_RETURN getDiskInfos(DiskInfo *diskInfos, size_t *disk_info_size) {
+	struct stat mount_stat, sym_stat;
+	/*static char discard[1024];
+	 char device[64], name[64], type[64];
+	 */
+	char cur_dir[MAX_PATH];
+	struct mntent *ent;
+
+	int maxDrives, currentDrive, i, drive_found;
+	__ino64_t *statDrives = NULL;
+	DiskInfo *tmpDrives = NULL;
+	FILE *aFile = NULL;
+	DIR *disk_by_uuid_dir = NULL, *disk_by_label = NULL;
+	struct dirent *dir = NULL;
+	FUNCTION_RETURN result;
+
+	if (diskInfos != NULL) {
+		maxDrives = *disk_info_size;
+		tmpDrives = diskInfos;
 	} else {
-		throw runtime_error(
-				string("Can't find: ") + strPath + " proc filesystem mounted?");
+		maxDrives = MAX_UNITS;
+		tmpDrives = (DiskInfo *)malloc(sizeof(DiskInfo) * maxDrives);
 	}
+	memset(tmpDrives, 0, sizeof(DiskInfo) * maxDrives);
+	statDrives = (__ino64_t *)malloc(maxDrives * sizeof(__ino64_t));
+	memset(statDrives, 0, sizeof(__ino64_t) * maxDrives);
+
+	aFile = setmntent("/proc/mounts", "r");
+	if (aFile == NULL) {
+		/*proc not mounted*/
+		free(tmpDrives);
+		free(statDrives);
+		return FUNC_RET_ERROR;
+	}
+
+	currentDrive = 0;
+	while (NULL != (ent = getmntent(aFile))) {
+		if ((strncmp(ent->mnt_type, "ext", 3) == 0 || strncmp(ent->mnt_type, "xfs", 3) == 0 ||
+			 strncmp(ent->mnt_type, "vfat", 4) == 0 || strncmp(ent->mnt_type, "ntfs", 4) == 0) &&
+			ent->mnt_fsname != NULL && strncmp(ent->mnt_fsname, "/dev/", 5) == 0) {
+			if (stat(ent->mnt_fsname, &mount_stat) == 0) {
+				drive_found = -1;
+				for (i = 0; i < currentDrive; i++) {
+					if (statDrives[i] == mount_stat.st_ino) {
+						drive_found = i;
+					}
+				}
+				if (drive_found == -1) {
+					LOG_DEBUG("mntent: %s %s %d\n", ent->mnt_fsname, ent->mnt_dir,
+							  (unsigned long int)mount_stat.st_ino);
+					strncpy(tmpDrives[currentDrive].device, ent->mnt_fsname, 255 - 1);
+					statDrives[currentDrive] = mount_stat.st_ino;
+					drive_found = currentDrive;
+					currentDrive++;
+				}
+				if (strcmp(ent->mnt_dir, "/") == 0) {
+					strcpy(tmpDrives[drive_found].label, "root");
+					LOG_DEBUG("drive %s set to preferred\n", ent->mnt_fsname);
+					tmpDrives[drive_found].preferred = 1;
+				} else {
+					tmpDrives[drive_found].preferred = 0;
+				}
+			}
+		}
+	}
+	endmntent(aFile);
+
+	if (diskInfos == NULL) {
+		*disk_info_size = currentDrive;
+		free(tmpDrives);
+		result = (currentDrive > 0) ? FUNC_RET_OK : FUNC_RET_NOT_AVAIL;
+	} else if (*disk_info_size >= currentDrive) {
+		disk_by_uuid_dir = opendir("/dev/disk/by-uuid");
+		if (disk_by_uuid_dir == NULL) {
+			LOG_WARN("Open /dev/disk/by-uuid fail");
+			free(statDrives);
+			return FUNC_RET_ERROR;
+		}
+		result = FUNC_RET_OK;
+		*disk_info_size = currentDrive;
+		while ((dir = readdir(disk_by_uuid_dir)) != NULL) {
+			strcpy(cur_dir, "/dev/disk/by-uuid/");
+			strncat(cur_dir, dir->d_name, 200);
+			if (stat(cur_dir, &sym_stat) == 0) {
+				for (i = 0; i < currentDrive; i++) {
+					if (sym_stat.st_ino == statDrives[i]) {
+						parseUUID(dir->d_name, tmpDrives[i].disk_sn, sizeof(tmpDrives[i].disk_sn));
+#ifdef _DEBUG
+						VALGRIND_CHECK_VALUE_IS_DEFINED(tmpDrives[i].device);
+
+						LOG_DEBUG("uuid %d %s %02x%02x%02x%02x\n", i, tmpDrives[i].device, tmpDrives[i].disk_sn[0],
+								  tmpDrives[i].disk_sn[1], tmpDrives[i].disk_sn[2], tmpDrives[i].disk_sn[3]);
+#endif
+					}
+				}
+			}
+		}
+		closedir(disk_by_uuid_dir);
+
+		disk_by_label = opendir("/dev/disk/by-label");
+		if (disk_by_label != NULL) {
+			while ((dir = readdir(disk_by_label)) != NULL) {
+				strcpy(cur_dir, "/dev/disk/by-label/");
+				strcat(cur_dir, dir->d_name);
+				if (stat(cur_dir, &sym_stat) == 0) {
+					for (i = 0; i < currentDrive; i++) {
+						if (sym_stat.st_ino == statDrives[i]) {
+							strncpy(tmpDrives[i].label, dir->d_name, 255 - 1);
+							printf("label %d %s %s\n", i, tmpDrives[i].label, tmpDrives[i].device);
+						}
+					}
+				}
+			}
+			closedir(disk_by_label);
+		}
+	} else {
+		result = FUNC_RET_BUFFER_TOO_SMALL;
+	}
+	free(statDrives);
 	return result;
 }
 
-string OsFunctions::getUserHomePath() {
-	return "";
+static void _getCpuid(unsigned int *p, unsigned int ax) {
+	__asm __volatile(
+		"movl %%ebx, %%esi\n\t"
+		"cpuid\n\t"
+		"xchgl %%ebx, %%esi"
+		: "=a"(p[0]), "=S"(p[1]), "=c"(p[2]), "=d"(p[3])
+		: "0"(ax));
 }
 
-bool OsFunctions::verifySignature(const char* stringToVerify,
-		const char* signature) {
-	EVP_MD_CTX *mdctx = NULL;
-
-	char *pubKey = PUBLIC_KEY
-	;
-
-	BIO* bio = BIO_new_mem_buf((void*) (pubKey), strlen(pubKey));
-	RSA *rsa = PEM_read_bio_RSAPublicKey(bio, NULL,NULL,NULL);
-	BIO_free(bio);
-	if (rsa == NULL) {
-		throw new logic_error("Error reading public key");
+FUNCTION_RETURN getCpuId(unsigned char identifier[6]) {
+	unsigned int i;
+	unsigned int cpuinfo[4] = {0, 0, 0, 0};
+	_getCpuid(cpuinfo, 0);
+	for (i = 0; i < 3; i++) {
+		identifier[i * 2] = cpuinfo[i] & 0xFF;
+		identifier[i * 2 + 1] = (cpuinfo[i] & 0xFF00) >> 8;
 	}
-	EVP_PKEY *pkey = EVP_PKEY_new();
+	return FUNC_RET_OK;
+}
 
-	EVP_PKEY_assign_RSA(pkey, rsa);
 
-	/*BIO* bo = BIO_new(BIO_s_mem());
-	 BIO_write(bo, pubKey, strlen(pubKey));
-	 RSA *key = 0;
-	 PEM_read_bio_RSAPublicKey(bo, &key, 0, 0);
-	 BIO_free(bo);*/
 
-	//RSA* rsa = EVP_PKEY_get1_RSA( key );
-	//RSA * pubKey = d2i_RSA_PUBKEY(NULL, <der encoded byte stream pointer>, <num bytes>);
-	/* Create the Message Digest Context */
-	if (!(mdctx = EVP_MD_CTX_create())) {
-		throw new logic_error("Error creating context");
+FUNCTION_RETURN getMachineName(unsigned char identifier[6]) {
+	static struct utsname u;
+
+	if (uname(&u) < 0) {
+		return FUNC_RET_ERROR;
 	}
-	if (1 != EVP_DigestVerifyInit(mdctx, NULL, EVP_sha256(), NULL, pkey)) {
-		throw new logic_error("Error initializing digest");
-	}
+	memcpy(identifier, u.nodename, 6);
+	return FUNC_RET_OK;
+}
 
-	if (1
-			!= EVP_DigestVerifyUpdate(mdctx, stringToVerify,
-					strlen(stringToVerify))) {
-		throw new logic_error("Error initializing digest");
+FUNCTION_RETURN getOsSpecificIdentifier(unsigned char identifier[6]) {
+#if USE_DBUS
+	char *dbus_id = dbus_get_local_machine_id();
+	if (dbus_id == NULL) {
+		return FUNC_RET_ERROR;
 	}
-	if (1
-			== EVP_DigestVerifyFinal(mdctx, (unsigned char *) signature,
-					(unsigned long int) strlen(signature))) {
-		return true;
+	memcpy(identifier, dbus_id, 6);
+	dbus_free(dbus_id);
+	return FUNC_RET_OK;
+#else
+	return FUNC_RET_NOT_AVAIL;
+#endif
+}
+
+FUNCTION_RETURN getModuleName(char buffer[MAX_PATH]) {
+	FUNCTION_RETURN result;
+	char path[MAX_PATH] = {0};
+	char proc_path[MAX_PATH], pidStr[64];
+	pid_t pid = getpid();
+	sprintf(pidStr, "%d", pid);
+	strcpy(proc_path, "/proc/");
+	strcat(proc_path, pidStr);
+	strcat(proc_path, "/exe");
+
+	int ch = readlink(proc_path, path, MAX_PATH - 1);
+	if (ch != -1) {
+		path[ch] = '\0';
+		strncpy(buffer, path, ch);
+		result = FUNC_RET_OK;
 	} else {
-
-		return false;
+		result = FUNC_RET_ERROR;
 	}
-}
-
-VIRTUALIZATION OsFunctions::getVirtualization() {
-	//http://www.ibiblio.org/gferg/ldp/GCC-Inline-Assembly-HOWTO.html
-	//
-	bool rc = true;
-	/*__asm__ (
-			"push   %edx\n"
-			"push   %ecx\n"
-			"push   %ebx\n"
-			"mov    %eax, 'VMXh'\n"
-			"mov    %ebx, 0\n" // any value but not the MAGIC VALUE
-			"mov    %ecx, 10\n"// get VMWare version
-			"mov    %edx, 'VX'\n"// port number
-			"in     %eax, dx\n"// read port on return EAX returns the VERSION
-			"cmp    %ebx, 'VMXh'\n"// is it a reply from VMWare?
-			"setz   [rc] \n"// set return value
-			"pop    %ebx \n"
-			"pop    %ecx \n"
-			"pop    %edx \n"
-	);*/
-
-	return NONE;
-}
-
+	return result;
 }

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