]> git.sven.stormbind.net Git - sven/exfatprogs.git/blobdiff - fsck/repair.c
Add CVE ID to debian changelog
[sven/exfatprogs.git] / fsck / repair.c
index c79d37977f00cb11af642b49d4e7f1310eeefa14..f983ee1e449e85ef68e8de1eb76fb7496a3e9087 100644 (file)
@@ -5,16 +5,22 @@
 #include <stdio.h>
 #include <string.h>
 #include <stdarg.h>
+#include <stdlib.h>
+#include <errno.h>
 
 #include "exfat_ondisk.h"
 #include "libexfat.h"
-#include "fsck.h"
 #include "repair.h"
+#include "exfat_fs.h"
+#include "fsck.h"
 
 struct exfat_repair_problem {
        er_problem_code_t       prcode;
        unsigned int            flags;
        unsigned int            prompt_type;
+       unsigned int            default_number;
+       unsigned int            bypass_number;
+       unsigned int            max_number;
 };
 
 /* Problem flags */
@@ -25,24 +31,37 @@ struct exfat_repair_problem {
 /* Prompt types */
 #define ERP_FIX                        0x00000001
 #define ERP_TRUNCATE           0x00000002
+#define ERP_DELETE             0x00000003
+#define ERP_RENAME             0x00000004
 
 static const char *prompts[] = {
        "Repair",
        "Fix",
        "Truncate",
+       "Delete",
+       "Select",
 };
 
 static struct exfat_repair_problem problems[] = {
-       {ER_BS_CHECKSUM, ERF_PREEN_YES, ERP_FIX},
-       {ER_BS_BOOT_REGION, 0, ERP_FIX},
-       {ER_DE_CHECKSUM, ERF_PREEN_YES, ERP_FIX},
-       {ER_FILE_VALID_SIZE, ERF_PREEN_YES, ERP_FIX},
-       {ER_FILE_INVALID_CLUS, ERF_DEFAULT_NO, ERP_TRUNCATE},
-       {ER_FILE_FIRST_CLUS, ERF_DEFAULT_NO, ERP_TRUNCATE},
-       {ER_FILE_SMALLER_SIZE, ERF_DEFAULT_NO, ERP_TRUNCATE},
-       {ER_FILE_LARGER_SIZE, ERF_DEFAULT_NO, ERP_TRUNCATE},
-       {ER_FILE_DUPLICATED_CLUS, ERF_DEFAULT_NO, ERP_TRUNCATE},
-       {ER_FILE_ZERO_NOFAT, ERF_PREEN_YES, ERP_FIX},
+       {ER_BS_CHECKSUM, ERF_PREEN_YES, ERP_FIX, 0, 0, 0},
+       {ER_BS_BOOT_REGION, 0, ERP_FIX, 0, 0, 0},
+       {ER_DE_CHECKSUM, ERF_PREEN_YES, ERP_DELETE, 0, 0, 0},
+       {ER_DE_UNKNOWN, ERF_PREEN_YES, ERP_DELETE, 0, 0, 0},
+       {ER_DE_FILE, ERF_PREEN_YES, ERP_DELETE, 0, 0, 0},
+       {ER_DE_SECONDARY_COUNT, ERF_PREEN_YES, ERP_DELETE, 0, 0, 0},
+       {ER_DE_STREAM, ERF_PREEN_YES, ERP_DELETE, 0, 0, 0},
+       {ER_DE_NAME, ERF_PREEN_YES, ERP_DELETE, 0, 0, 0},
+       {ER_DE_NAME_HASH, ERF_PREEN_YES, ERP_FIX, 0, 0, 0},
+       {ER_DE_NAME_LEN, ERF_PREEN_YES, ERP_FIX, 0, 0, 0},
+       {ER_DE_DOT_NAME, ERF_PREEN_YES, ERP_RENAME, 2, 3, 4},
+       {ER_DE_DUPLICATED_NAME, ERF_PREEN_YES, ERP_RENAME, 2, 3, 4},
+       {ER_FILE_VALID_SIZE, ERF_PREEN_YES, ERP_FIX, 0, 0, 0},
+       {ER_FILE_INVALID_CLUS, ERF_PREEN_YES, ERP_TRUNCATE, 0, 0, 0},
+       {ER_FILE_FIRST_CLUS, ERF_PREEN_YES, ERP_TRUNCATE, 0, 0, 0},
+       {ER_FILE_SMALLER_SIZE, ERF_PREEN_YES, ERP_TRUNCATE, 0, 0, 0},
+       {ER_FILE_LARGER_SIZE, ERF_PREEN_YES, ERP_TRUNCATE, 0, 0, 0},
+       {ER_FILE_DUPLICATED_CLUS, ERF_PREEN_YES, ERP_TRUNCATE, 0, 0, 0},
+       {ER_FILE_ZERO_NOFAT, ERF_PREEN_YES, ERP_FIX, 0, 0, 0},
 };
 
 static struct exfat_repair_problem *find_problem(er_problem_code_t prcode)
@@ -57,63 +76,220 @@ static struct exfat_repair_problem *find_problem(er_problem_code_t prcode)
        return NULL;
 }
 
-static bool ask_repair(struct exfat *exfat, struct exfat_repair_problem *pr)
+static int ask_repair(struct exfat_fsck *fsck, struct exfat_repair_problem *pr)
 {
-       bool repair = false;
+       int repair = 0;
        char answer[8];
 
-       if (exfat->options & FSCK_OPTS_REPAIR_NO ||
-                       pr->flags & ERF_DEFAULT_NO)
-               repair = false;
-       else if (exfat->options & FSCK_OPTS_REPAIR_YES ||
-                       pr->flags & ERF_DEFAULT_YES)
-               repair = true;
+       if (fsck->options & FSCK_OPTS_REPAIR_NO ||
+           pr->flags & ERF_DEFAULT_NO)
+               repair = 0;
+       else if (fsck->options & FSCK_OPTS_REPAIR_YES ||
+                pr->flags & ERF_DEFAULT_YES)
+               repair = 1;
        else {
-               if (exfat->options & FSCK_OPTS_REPAIR_ASK) {
+               if (fsck->options & FSCK_OPTS_REPAIR_ASK) {
                        do {
-                               printf(". %s (y/N)? ",
-                                       prompts[pr->prompt_type]);
+                               if (pr->prompt_type & ERP_RENAME) {
+                                       printf("%s (Number: ?) ",
+                                              prompts[pr->prompt_type]);
+                               } else {
+                                       printf(". %s (y/N)? ",
+                                              prompts[pr->prompt_type]);
+                               }
                                fflush(stdout);
 
-                               if (fgets(answer, sizeof(answer), stdin)) {
+                               if (!fgets(answer, sizeof(answer), stdin))
+                                       continue;
+
+                               if (pr->prompt_type & ERP_RENAME) {
+                                       unsigned int number = atoi(answer);
+
+                                       if (number > 0 && number < pr->max_number)
+                                               return number;
+                               } else {
                                        if (strcasecmp(answer, "Y\n") == 0)
-                                               return true;
-                                       else if (strcasecmp(answer, "\n") == 0
-                                               || strcasecmp(answer, "N\n") == 0)
-                                               return false;
+                                               return 1;
+                                       else if (strcasecmp(answer, "\n") == 0 ||
+                                                strcasecmp(answer, "N\n") == 0)
+                                               return 0;
                                }
                        } while (1);
-               } else if (exfat->options & FSCK_OPTS_REPAIR_AUTO &&
-                               pr->flags & ERF_PREEN_YES)
-                       repair = true;
+               } else if (fsck->options & FSCK_OPTS_REPAIR_AUTO &&
+                          pr->flags & ERF_PREEN_YES)
+                       repair = 1;
        }
 
-       printf(". %s (y/N)? %c\n", prompts[pr->prompt_type],
-               repair ? 'y' : 'n');
+       if (pr->prompt_type & ERP_RENAME) {
+               int print_num = repair ? pr->default_number : pr->bypass_number;
+
+               printf("%s (Number : %d)\n", prompts[pr->prompt_type],
+                      print_num);
+               repair = print_num;
+       } else {
+               printf(". %s (y/N)? %c\n", prompts[pr->prompt_type],
+                      repair ? 'y' : 'n');
+       }
        return repair;
 }
 
-bool exfat_repair_ask(struct exfat *exfat, er_problem_code_t prcode,
-                       const char *desc, ...)
+int exfat_repair_ask(struct exfat_fsck *fsck, er_problem_code_t prcode,
+                    const char *desc, ...)
 {
        struct exfat_repair_problem *pr = NULL;
        va_list ap;
+       int repair;
 
        pr = find_problem(prcode);
        if (!pr) {
                exfat_err("unknown problem code. %#x\n", prcode);
-               return false;
+               return 0;
        }
 
        va_start(ap, desc);
        vprintf(desc, ap);
        va_end(ap);
 
-       if (ask_repair(exfat, pr)) {
+       repair = ask_repair(fsck, pr);
+       if (repair) {
                if (pr->prompt_type & ERP_TRUNCATE)
-                       exfat->dirty_fat = true;
-               exfat->dirty = true;
-               return true;
-       } else
-               return false;
+                       fsck->dirty_fat = true;
+               fsck->dirty = true;
+       }
+       return repair;
+}
+
+static int check_bad_char(char w)
+{
+       return (w < 0x0020) || (w == '*') || (w == '?') || (w == '<') ||
+               (w == '>') || (w == '|') || (w == '"') || (w == ':') ||
+               (w == '/') || (w == '\\');
+}
+
+static char *get_rename_from_user(struct exfat_de_iter *iter)
+{
+       char *rename = malloc(ENTRY_NAME_MAX + 2);
+
+       if (!rename)
+               return NULL;
+
+retry:
+       /* +2 means LF(Line Feed) and NULL terminator */
+       memset(rename, 0x1, ENTRY_NAME_MAX + 2);
+       printf("New name: ");
+       if (fgets(rename, ENTRY_NAME_MAX + 2, stdin)) {
+               int i, len, err;
+               struct exfat_lookup_filter filter;
+
+               len = strlen(rename);
+               /* Remove LF in filename */
+               rename[len - 1] = '\0';
+               for (i = 0; i < len - 1; i++) {
+                       if (check_bad_char(rename[i])) {
+                               printf("filename contain invalid character(%c)\n", rename[i]);
+                               goto retry;
+                       }
+               }
+
+               exfat_de_iter_flush(iter);
+               err = exfat_lookup_file(iter->exfat, iter->parent, rename, &filter);
+               if (!err) {
+                       printf("file(%s) already exists, retry to insert name\n", rename);
+                       goto retry;
+               }
+       }
+
+       return rename;
+}
+
+static char *generate_rename(struct exfat_de_iter *iter)
+{
+       char *rename;
+
+       if (iter->invalid_name_num > INVALID_NAME_NUM_MAX)
+               return NULL;
+
+       rename = malloc(ENTRY_NAME_MAX + 1);
+       if (!rename)
+               return NULL;
+
+       while (1) {
+               struct exfat_lookup_filter filter;
+               int err;
+
+               snprintf(rename, ENTRY_NAME_MAX + 1, "FILE%07d.CHK",
+                        iter->invalid_name_num++);
+               err = exfat_lookup_file(iter->exfat, iter->parent, rename,
+                                       &filter);
+               if (!err)
+                       continue;
+               break;
+       }
+
+       return rename;
+}
+
+int exfat_repair_rename_ask(struct exfat_fsck *fsck, struct exfat_de_iter *iter,
+               char *old_name, er_problem_code_t prcode, char *error_msg)
+{
+       int num;
+
+ask_again:
+       num = exfat_repair_ask(fsck, prcode, "ERROR: '%s' %s.\n%s",
+                       old_name, error_msg,
+                       " [1] Insert the name you want to rename.\n"
+                       " [2] Automatically renames filename.\n"
+                       " [3] Bypass this check(No repair)\n");
+       if (num) {
+               __le16 utf16_name[ENTRY_NAME_MAX];
+               char *rename = NULL;
+               __u16 hash;
+               struct exfat_dentry *dentry;
+               int ret, i;
+
+               switch (num) {
+               case 1:
+                       rename = get_rename_from_user(iter);
+                       break;
+               case 2:
+                       rename = generate_rename(iter);
+                       break;
+               case 3:
+                       break;
+               default:
+                       exfat_info("select 1 or 2 number instead of %d\n", num);
+                       goto ask_again;
+               }
+
+               if (!rename)
+                       return -EINVAL;
+
+               exfat_info("%s filename is renamed to %s\n", old_name, rename);
+
+               exfat_de_iter_get_dirty(iter, 2, &dentry);
+
+               memset(utf16_name, 0, sizeof(utf16_name));
+               ret = exfat_utf16_enc(rename, utf16_name, sizeof(utf16_name));
+               free(rename);
+               if (ret < 0)
+                       return ret;
+
+               ret >>= 1;
+               memcpy(dentry->name_unicode, utf16_name, ENTRY_NAME_MAX * 2);
+               hash = exfat_calc_name_hash(iter->exfat, utf16_name, ret);
+               exfat_de_iter_get_dirty(iter, 1, &dentry);
+               dentry->stream_name_len = (__u8)ret;
+               dentry->stream_name_hash = cpu_to_le16(hash);
+
+               exfat_de_iter_get_dirty(iter, 0, &dentry);
+               i = dentry->file_num_ext;
+               dentry->file_num_ext = 2;
+
+               for (; i > 2; i--) {
+                       exfat_de_iter_get_dirty(iter, i, &dentry);
+                       dentry->type &= EXFAT_DELETE;
+               }
+       }
+
+       return 0;
 }