From 956f5dffa76908fe70dffaf9aeee11f057208895 Mon Sep 17 00:00:00 2001
From: open-license-manager <rillf@maildrop.cc>
Date: 周二, 22 7月 2014 05:20:33 +0800
Subject: [PATCH] fix compilation for gcc 4.8 & some unit test

---
 src/library/os/linux/os-linux.c |  196 +++++++++++++++++++++++++++++++++++++++++++++----
 1 files changed, 180 insertions(+), 16 deletions(-)

diff --git a/src/library/os/linux/os-linux.c b/src/library/os/linux/os-linux.c
index b316c17..cfb5bf4 100644
--- a/src/library/os/linux/os-linux.c
+++ b/src/library/os/linux/os-linux.c
@@ -4,6 +4,7 @@
 #include <netdb.h>
 #include <ifaddrs.h>
 #include <stdio.h>
+#include <ctype.h>
 #include <stdlib.h>
 #include <unistd.h>
 #include <linux/if_link.h>
@@ -25,6 +26,10 @@
 #include <openssl/bio.h>
 #include <openssl/pem.h>
 #include <openssl/err.h>
+
+#include <mntent.h>
+#include <dirent.h>
+#include <stdio.h>
 
 static int ifname_position(char *ifnames, char * ifname, int ifnames_max) {
 	int i, position;
@@ -77,7 +82,7 @@
 			strncpy(&ifnames[if_num * NI_MAXHOST], ifa->ifa_name, NI_MAXHOST);
 			if (adapterInfos != NULL && if_num < *adapter_info_size) {
 				strncpy(adapterInfos[if_num].description, ifa->ifa_name,
-						NI_MAXHOST);
+				NI_MAXHOST);
 			}
 			if_name_position = if_num;
 			if_num++;
@@ -137,7 +142,7 @@
 #endif
 				}
 #ifdef _DEBUG
-					printf("\t %s\n", ifa->ifa_name);
+				printf("\t %s\n", ifa->ifa_name);
 #endif
 
 			}
@@ -153,27 +158,186 @@
 	freeifaddrs(ifaddr);
 	return f_return;
 }
+/**
+ *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) {
+	size_t len;
+	unsigned int i, j;
+	char * hexuuid;
+	char cur_character;
+	//remove characters not in hex set
+	len = strlen(uuid);
+	hexuuid = (char *) malloc(sizeof(char) * strlen(uuid));
+	memset(buffer_out, 0, out_size);
 
+	for (i = 0, j = 0; i < len; i++) {
+		if (isxdigit(uuid[i])) {
+			hexuuid[j] = uuid[i];
+			j++;
+		} else {
+			//skip
+			continue;
+		}
+	}
+	if (j % 2 == 1) {
+		hexuuid[j++] = '0';
+	}
+	hexuuid[j] = '\0';
+	for (i = 0; i < j; i++) {
+		sscanf(&hexuuid[i * 2], "%2hhx", &cur_character);
+		buffer_out[i % out_size] = buffer_out[i % out_size] ^ cur_character;
+	}
+
+	free(hexuuid);
+}
+
+#define MAX_UNITS 20
 FUNCTION_RETURN getDiskInfos(DiskInfo * diskInfos, size_t * disk_info_size) {
-	struct stat filename_stat, mount_stat;
-	static char discard[1024];
-	char device[64], name[64], type[64];
-	FILE *mounts = fopen(_PATH_MOUNTED, "r");
-	if (mounts == NULL) {
+	struct stat mount_stat, sym_stat;
+	/*static char discard[1024];
+	 char device[64], name[64], type[64];
+	 */
+	char path[MAX_PATH], cur_dir[MAX_PATH];
+	struct mntent *ent;
+
+	int maxDrives, currentDrive, i, drive_found;
+	__ino64_t *statDrives;
+	DiskInfo *tmpDrives;
+	FILE *aFile;
+	DIR *disk_by_uuid_dir, *disk_by_label;
+	struct dirent *dir;
+	FUNCTION_RETURN result;
+
+	if (diskInfos != NULL) {
+		maxDrives = *disk_info_size;
+		tmpDrives = diskInfos;
+	} else {
+		maxDrives = MAX_UNITS;
+		tmpDrives = (DiskInfo *) malloc(sizeof(DiskInfo) * maxDrives);
+	}
+	statDrives = (__ino64_t *) malloc(maxDrives * sizeof(__ino64_t ));
+	memset(tmpDrives, 0, sizeof(DiskInfo) * maxDrives);
+
+	aFile = setmntent("/proc/mounts", "r");
+	if (aFile == NULL) {
+		/*proc not mounted*/
 		return ERROR;
 	}
 
-	while (fscanf(mounts, "%64s %64s %64s %1024[^\n]", device, name, type,
-			discard) != EOF) {
-		if (stat(device, &mount_stat) != 0)
-			continue;
-		if (filename_stat.st_dev == mount_stat.st_rdev) {
-			fprintf(stderr, "device: %s; name: %s; type: %s\n", device, name,
-					type);
-		}
+	disk_by_uuid_dir = opendir("/dev/disk/by-uuid");
+	if (disk_by_uuid_dir == NULL) {
+#ifdef _DEBUG
+		printf("Open /dev/disk/by-uuid fail");
+#endif
+		return ERROR;
 	}
 
-	return ERROR;
+	currentDrive = 0;
+	while (NULL != (ent = getmntent(aFile))) {
+		if ((strncmp(ent->mnt_type, "ext", 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) {
+#ifdef _DEBUG
+					printf("mntent: %s %s %d\n", ent->mnt_fsname, ent->mnt_dir,
+							mount_stat.st_ino);
+#endif
+					strcpy(tmpDrives[currentDrive].device, ent->mnt_fsname);
+					statDrives[currentDrive] = mount_stat.st_ino;
+					drive_found = currentDrive;
+					currentDrive++;
+				}
+				if (strcmp(ent->mnt_dir, "/") == 0) {
+					strcpy(tmpDrives[drive_found].label, "root");
+#ifdef _DEBUG
+					printf("drive %s set to preferred\n", ent->mnt_fsname);
+#endif
+					tmpDrives[drive_found].preferred = true;
+				}
+			}
+		}
+	}
+	endmntent(aFile);
+	if (diskInfos == NULL) {
+		*disk_info_size = currentDrive;
+		free(tmpDrives);
+		result = OK;
+	} else if (*disk_info_size >= currentDrive) {
+		result = OK;
+		*disk_info_size = currentDrive;
+		while ((dir = readdir(disk_by_uuid_dir)) != NULL) {
+			strcpy(cur_dir, "/dev/disk/by-uuid/");
+			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]) {
+						parseUUID(dir->d_name, tmpDrives[i].disk_sn,
+								sizeof(tmpDrives[i].disk_sn));
+#ifdef _DEBUG
+						printf("uuid %d %s %s %02x%02x%02x%02x\n", i,
+								tmpDrives[i].device, path,
+								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);
+							printf("label %d %s %s\n", i, tmpDrives[i].label,
+									tmpDrives[i].device);
+						}
+					}
+				}
+			}
+			closedir(disk_by_label);
+		}
+	} else {
+		result = BUFFER_TOO_SMALL;
+	}
+	/*
+	 FILE *mounts = fopen(_PATH_MOUNTED, "r");
+	 if (mounts == NULL) {
+	 return ERROR;
+	 }
+
+	 while (fscanf(mounts, "%64s %64s %64s %1024[^\n]", device, name, type,
+	 discard) != EOF) {
+	 if (stat(device, &mount_stat) != 0)
+	 continue;
+	 if (filename_stat.st_dev == mount_stat.st_rdev) {
+	 fprintf(stderr, "device: %s; name: %s; type: %s\n", device, name,
+	 type);
+	 }
+	 }
+	 */
+	return result;
 }
 
 void os_initialize() {

--
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