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annotate miscprog/grokdsn.c @ 194:805e99848aea

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grokdsn: buglet in the hierarchy traversal order
author Michael Spacefalcon <falcon@ivan.Harhan.ORG>
date Wed, 07 Jan 2015 22:15:51 +0000
parents 37f78f986a0a
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
191
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1 /*
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2 * We have TI's Leonardo reference schematics in the form of 3 different PDF
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3 * versions and an OrCAD DSN file corresponding to one of them. The latter
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4 * appears (based on a cursory strings(1) inspection) to contain more
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5 * juicy information than is present in the PDF prints. We need to extract
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6 * as much of this information as we can in order to replicate the lost
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7 * Leonardo board as closely as possible.
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8 *
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9 * The top level structure of this DSN file appears to be Microsoft CDF.
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10 * Therefore, I shall begin by parsing this "archive" structure and
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11 * extracting the individual files contained therein, in an effort to gain
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12 * more insight as to what goes with what than can be gleaned from strings(1)
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13 * on the raw DSN file. This hack-utility is my CDF parser written for
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14 * this specific purpose.
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15 */
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16
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17 #include <sys/types.h>
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18 #include <sys/file.h>
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19 #include <sys/stat.h>
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20 #include <sys/mman.h>
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21 #include <stdio.h>
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22 #include <stdint.h>
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23 #include <endian.h>
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24 #include <stdlib.h>
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25 #include <unistd.h>
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26 #include <string.h>
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27 #include <strings.h>
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28
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29 #define HEADER_MFAT_ENTRIES 109
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30 struct cdf_header {
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31 u_char magic[8];
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32 u_char uid[16];
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33 uint16_t fmt_minor;
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34 uint16_t fmt_major;
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35 uint16_t byte_order;
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36 uint16_t sector_size;
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37 uint16_t subsec_size;
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38 u_char rsvd1[10];
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39 uint32_t fat_sectors;
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40 uint32_t dir_start;
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41 u_char rsvd2[4];
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42 uint32_t min_large_file;
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43 uint32_t subfat_start;
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44 uint32_t subfat_sectors;
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45 uint32_t mfat_start;
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46 uint32_t mfat_sectors;
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47 uint32_t fat_secids[HEADER_MFAT_ENTRIES];
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48 };
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49
193
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50 struct dir_entry {
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51 uint16_t uni_name[32];
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52 uint16_t name_len;
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53 u_char type;
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54 u_char color;
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55 uint32_t left_child;
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56 uint32_t right_child;
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57 uint32_t subtree_dirid;
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58 u_char uid[16];
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59 u_char user_flags[4];
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60 u_char time_creat[8];
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61 u_char time_lastmod[8];
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62 uint32_t content_secid;
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63 uint32_t content_bytes;
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64 u_char rsvd[4];
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65 };
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66
191
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67 char *dsnfilename;
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68 u_char *filemapping;
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69 struct cdf_header *cdf_header;
192
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70 unsigned total_sectors, fat_nsectors;
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71
193
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72 #define MAX_DIR_SECTORS 64
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73 unsigned dir_nsectors, dir_secids[MAX_DIR_SECTORS];
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74
191
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75 open_and_mmap_file()
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76 {
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77 int fd;
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78 struct stat st;
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79
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80 fd = open(dsnfilename, O_RDONLY);
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81 if (fd < 0) {
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82 perror(dsnfilename);
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83 exit(1);
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84 }
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85 fstat(fd, &st);
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86 if (!S_ISREG(st.st_mode)) {
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87 fprintf(stderr, "error: %s is not a regular file\n",
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88 dsnfilename);
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89 exit(1);
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90 }
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91 if (st.st_size < 512) {
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92 fprintf(stderr, "error: %s is shorter than 512 bytes\n",
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93 dsnfilename);
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94 exit(1);
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95 }
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96 if (st.st_size % 512) {
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97 fprintf(stderr, "error: %s is not a multiple of 512 bytes\n",
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98 dsnfilename);
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99 exit(1);
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100 }
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101 filemapping = mmap(0, st.st_size, PROT_READ, MAP_PRIVATE, fd, 0);
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102 if (filemapping == MAP_FAILED) {
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103 perror("mmap");
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104 exit(1);
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105 }
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106 close(fd);
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107 cdf_header = (struct cdf_header *) filemapping;
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108 total_sectors = st.st_size / 512 - 1;
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109 return(0);
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110 }
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111
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112 dump_cdf_header()
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113 {
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114 printf("Magic: %02X %02X %02X %02X %02X %02X %02X %02X\n",
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115 cdf_header->magic[0], cdf_header->magic[1],
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116 cdf_header->magic[2], cdf_header->magic[3],
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117 cdf_header->magic[4], cdf_header->magic[5],
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118 cdf_header->magic[6], cdf_header->magic[7]);
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119 printf("Format version: %04X.%04X\n", le16toh(cdf_header->fmt_major),
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120 le16toh(cdf_header->fmt_minor));
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121 printf("Sector / subsector shift: %u / %u\n",
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122 le16toh(cdf_header->sector_size),
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123 le16toh(cdf_header->subsec_size));
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124 printf("Total FAT sectors: %u\n", le32toh(cdf_header->fat_sectors));
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125 printf("Directory start sector: %u\n", le32toh(cdf_header->dir_start));
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126 printf("File size threshold: %u\n",
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127 le32toh(cdf_header->min_large_file));
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128 return(0);
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129 }
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130
192
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131 u_char *
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132 get_sector_ptr(secid)
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133 unsigned secid;
5d84f63eff72 grokdsn: able to follow the FAT chain for the directory
Michael Spacefalcon <falcon@ivan.Harhan.ORG>
parents: 191
diff changeset
134 {
5d84f63eff72 grokdsn: able to follow the FAT chain for the directory
Michael Spacefalcon <falcon@ivan.Harhan.ORG>
parents: 191
diff changeset
135 if (secid > total_sectors) {
5d84f63eff72 grokdsn: able to follow the FAT chain for the directory
Michael Spacefalcon <falcon@ivan.Harhan.ORG>
parents: 191
diff changeset
136 fprintf(stderr,
5d84f63eff72 grokdsn: able to follow the FAT chain for the directory
Michael Spacefalcon <falcon@ivan.Harhan.ORG>
parents: 191
diff changeset
137 "error: request for sector #%u; we only have %u in total\n",
5d84f63eff72 grokdsn: able to follow the FAT chain for the directory
Michael Spacefalcon <falcon@ivan.Harhan.ORG>
parents: 191
diff changeset
138 secid, total_sectors);
5d84f63eff72 grokdsn: able to follow the FAT chain for the directory
Michael Spacefalcon <falcon@ivan.Harhan.ORG>
parents: 191
diff changeset
139 exit(1);
5d84f63eff72 grokdsn: able to follow the FAT chain for the directory
Michael Spacefalcon <falcon@ivan.Harhan.ORG>
parents: 191
diff changeset
140 }
5d84f63eff72 grokdsn: able to follow the FAT chain for the directory
Michael Spacefalcon <falcon@ivan.Harhan.ORG>
parents: 191
diff changeset
141 return filemapping + (secid + 1) * 512;
5d84f63eff72 grokdsn: able to follow the FAT chain for the directory
Michael Spacefalcon <falcon@ivan.Harhan.ORG>
parents: 191
diff changeset
142 }
5d84f63eff72 grokdsn: able to follow the FAT chain for the directory
Michael Spacefalcon <falcon@ivan.Harhan.ORG>
parents: 191
diff changeset
143
5d84f63eff72 grokdsn: able to follow the FAT chain for the directory
Michael Spacefalcon <falcon@ivan.Harhan.ORG>
parents: 191
diff changeset
144 init_fat_access()
5d84f63eff72 grokdsn: able to follow the FAT chain for the directory
Michael Spacefalcon <falcon@ivan.Harhan.ORG>
parents: 191
diff changeset
145 {
5d84f63eff72 grokdsn: able to follow the FAT chain for the directory
Michael Spacefalcon <falcon@ivan.Harhan.ORG>
parents: 191
diff changeset
146 fat_nsectors = le32toh(cdf_header->fat_sectors);
5d84f63eff72 grokdsn: able to follow the FAT chain for the directory
Michael Spacefalcon <falcon@ivan.Harhan.ORG>
parents: 191
diff changeset
147 if (fat_nsectors > HEADER_MFAT_ENTRIES) {
5d84f63eff72 grokdsn: able to follow the FAT chain for the directory
Michael Spacefalcon <falcon@ivan.Harhan.ORG>
parents: 191
diff changeset
148 fprintf(stderr, "error: large FAT not supported\n");
5d84f63eff72 grokdsn: able to follow the FAT chain for the directory
Michael Spacefalcon <falcon@ivan.Harhan.ORG>
parents: 191
diff changeset
149 exit(1);
5d84f63eff72 grokdsn: able to follow the FAT chain for the directory
Michael Spacefalcon <falcon@ivan.Harhan.ORG>
parents: 191
diff changeset
150 }
5d84f63eff72 grokdsn: able to follow the FAT chain for the directory
Michael Spacefalcon <falcon@ivan.Harhan.ORG>
parents: 191
diff changeset
151 return(0);
5d84f63eff72 grokdsn: able to follow the FAT chain for the directory
Michael Spacefalcon <falcon@ivan.Harhan.ORG>
parents: 191
diff changeset
152 }
5d84f63eff72 grokdsn: able to follow the FAT chain for the directory
Michael Spacefalcon <falcon@ivan.Harhan.ORG>
parents: 191
diff changeset
153
5d84f63eff72 grokdsn: able to follow the FAT chain for the directory
Michael Spacefalcon <falcon@ivan.Harhan.ORG>
parents: 191
diff changeset
154 u_char *
5d84f63eff72 grokdsn: able to follow the FAT chain for the directory
Michael Spacefalcon <falcon@ivan.Harhan.ORG>
parents: 191
diff changeset
155 get_fat_sector(fat_sec_no)
5d84f63eff72 grokdsn: able to follow the FAT chain for the directory
Michael Spacefalcon <falcon@ivan.Harhan.ORG>
parents: 191
diff changeset
156 unsigned fat_sec_no;
5d84f63eff72 grokdsn: able to follow the FAT chain for the directory
Michael Spacefalcon <falcon@ivan.Harhan.ORG>
parents: 191
diff changeset
157 {
5d84f63eff72 grokdsn: able to follow the FAT chain for the directory
Michael Spacefalcon <falcon@ivan.Harhan.ORG>
parents: 191
diff changeset
158 unsigned secid;
5d84f63eff72 grokdsn: able to follow the FAT chain for the directory
Michael Spacefalcon <falcon@ivan.Harhan.ORG>
parents: 191
diff changeset
159
5d84f63eff72 grokdsn: able to follow the FAT chain for the directory
Michael Spacefalcon <falcon@ivan.Harhan.ORG>
parents: 191
diff changeset
160 if (fat_sec_no > fat_nsectors) {
5d84f63eff72 grokdsn: able to follow the FAT chain for the directory
Michael Spacefalcon <falcon@ivan.Harhan.ORG>
parents: 191
diff changeset
161 fprintf(stderr,
5d84f63eff72 grokdsn: able to follow the FAT chain for the directory
Michael Spacefalcon <falcon@ivan.Harhan.ORG>
parents: 191
diff changeset
162 "error: request for FAT sector #%u; we only have %u in total\n",
5d84f63eff72 grokdsn: able to follow the FAT chain for the directory
Michael Spacefalcon <falcon@ivan.Harhan.ORG>
parents: 191
diff changeset
163 fat_sec_no, fat_nsectors);
5d84f63eff72 grokdsn: able to follow the FAT chain for the directory
Michael Spacefalcon <falcon@ivan.Harhan.ORG>
parents: 191
diff changeset
164 exit(1);
5d84f63eff72 grokdsn: able to follow the FAT chain for the directory
Michael Spacefalcon <falcon@ivan.Harhan.ORG>
parents: 191
diff changeset
165 }
5d84f63eff72 grokdsn: able to follow the FAT chain for the directory
Michael Spacefalcon <falcon@ivan.Harhan.ORG>
parents: 191
diff changeset
166 secid = le32toh(cdf_header->fat_secids[fat_sec_no]);
5d84f63eff72 grokdsn: able to follow the FAT chain for the directory
Michael Spacefalcon <falcon@ivan.Harhan.ORG>
parents: 191
diff changeset
167 return get_sector_ptr(secid);
5d84f63eff72 grokdsn: able to follow the FAT chain for the directory
Michael Spacefalcon <falcon@ivan.Harhan.ORG>
parents: 191
diff changeset
168 }
5d84f63eff72 grokdsn: able to follow the FAT chain for the directory
Michael Spacefalcon <falcon@ivan.Harhan.ORG>
parents: 191
diff changeset
169
5d84f63eff72 grokdsn: able to follow the FAT chain for the directory
Michael Spacefalcon <falcon@ivan.Harhan.ORG>
parents: 191
diff changeset
170 int32_t
5d84f63eff72 grokdsn: able to follow the FAT chain for the directory
Michael Spacefalcon <falcon@ivan.Harhan.ORG>
parents: 191
diff changeset
171 get_fat_entry(entry_no)
5d84f63eff72 grokdsn: able to follow the FAT chain for the directory
Michael Spacefalcon <falcon@ivan.Harhan.ORG>
parents: 191
diff changeset
172 unsigned entry_no;
5d84f63eff72 grokdsn: able to follow the FAT chain for the directory
Michael Spacefalcon <falcon@ivan.Harhan.ORG>
parents: 191
diff changeset
173 {
5d84f63eff72 grokdsn: able to follow the FAT chain for the directory
Michael Spacefalcon <falcon@ivan.Harhan.ORG>
parents: 191
diff changeset
174 unsigned fat_sec_no, entry_in_sec;
5d84f63eff72 grokdsn: able to follow the FAT chain for the directory
Michael Spacefalcon <falcon@ivan.Harhan.ORG>
parents: 191
diff changeset
175 uint32_t *fat_sector;
5d84f63eff72 grokdsn: able to follow the FAT chain for the directory
Michael Spacefalcon <falcon@ivan.Harhan.ORG>
parents: 191
diff changeset
176
5d84f63eff72 grokdsn: able to follow the FAT chain for the directory
Michael Spacefalcon <falcon@ivan.Harhan.ORG>
parents: 191
diff changeset
177 fat_sec_no = entry_no / 128;
5d84f63eff72 grokdsn: able to follow the FAT chain for the directory
Michael Spacefalcon <falcon@ivan.Harhan.ORG>
parents: 191
diff changeset
178 entry_in_sec = entry_no % 128;
5d84f63eff72 grokdsn: able to follow the FAT chain for the directory
Michael Spacefalcon <falcon@ivan.Harhan.ORG>
parents: 191
diff changeset
179 fat_sector = (uint32_t *) get_fat_sector(fat_sec_no);
5d84f63eff72 grokdsn: able to follow the FAT chain for the directory
Michael Spacefalcon <falcon@ivan.Harhan.ORG>
parents: 191
diff changeset
180 return le32toh(fat_sector[entry_in_sec]);
5d84f63eff72 grokdsn: able to follow the FAT chain for the directory
Michael Spacefalcon <falcon@ivan.Harhan.ORG>
parents: 191
diff changeset
181 }
5d84f63eff72 grokdsn: able to follow the FAT chain for the directory
Michael Spacefalcon <falcon@ivan.Harhan.ORG>
parents: 191
diff changeset
182
5d84f63eff72 grokdsn: able to follow the FAT chain for the directory
Michael Spacefalcon <falcon@ivan.Harhan.ORG>
parents: 191
diff changeset
183 dump_fat_chain(sarg)
5d84f63eff72 grokdsn: able to follow the FAT chain for the directory
Michael Spacefalcon <falcon@ivan.Harhan.ORG>
parents: 191
diff changeset
184 char *sarg;
5d84f63eff72 grokdsn: able to follow the FAT chain for the directory
Michael Spacefalcon <falcon@ivan.Harhan.ORG>
parents: 191
diff changeset
185 {
5d84f63eff72 grokdsn: able to follow the FAT chain for the directory
Michael Spacefalcon <falcon@ivan.Harhan.ORG>
parents: 191
diff changeset
186 int i, n;
5d84f63eff72 grokdsn: able to follow the FAT chain for the directory
Michael Spacefalcon <falcon@ivan.Harhan.ORG>
parents: 191
diff changeset
187
5d84f63eff72 grokdsn: able to follow the FAT chain for the directory
Michael Spacefalcon <falcon@ivan.Harhan.ORG>
parents: 191
diff changeset
188 init_fat_access();
5d84f63eff72 grokdsn: able to follow the FAT chain for the directory
Michael Spacefalcon <falcon@ivan.Harhan.ORG>
parents: 191
diff changeset
189 i = atoi(sarg);
5d84f63eff72 grokdsn: able to follow the FAT chain for the directory
Michael Spacefalcon <falcon@ivan.Harhan.ORG>
parents: 191
diff changeset
190 while (i >= 0) {
5d84f63eff72 grokdsn: able to follow the FAT chain for the directory
Michael Spacefalcon <falcon@ivan.Harhan.ORG>
parents: 191
diff changeset
191 n = get_fat_entry(i);
5d84f63eff72 grokdsn: able to follow the FAT chain for the directory
Michael Spacefalcon <falcon@ivan.Harhan.ORG>
parents: 191
diff changeset
192 printf("FAT[%d] = %d\n", i, n);
5d84f63eff72 grokdsn: able to follow the FAT chain for the directory
Michael Spacefalcon <falcon@ivan.Harhan.ORG>
parents: 191
diff changeset
193 i = n;
5d84f63eff72 grokdsn: able to follow the FAT chain for the directory
Michael Spacefalcon <falcon@ivan.Harhan.ORG>
parents: 191
diff changeset
194 }
5d84f63eff72 grokdsn: able to follow the FAT chain for the directory
Michael Spacefalcon <falcon@ivan.Harhan.ORG>
parents: 191
diff changeset
195 return(0);
5d84f63eff72 grokdsn: able to follow the FAT chain for the directory
Michael Spacefalcon <falcon@ivan.Harhan.ORG>
parents: 191
diff changeset
196 }
5d84f63eff72 grokdsn: able to follow the FAT chain for the directory
Michael Spacefalcon <falcon@ivan.Harhan.ORG>
parents: 191
diff changeset
197
193
37f78f986a0a grokdsn: tree dump implemented
Michael Spacefalcon <falcon@ivan.Harhan.ORG>
parents: 192
diff changeset
198 locate_dir_sectors()
37f78f986a0a grokdsn: tree dump implemented
Michael Spacefalcon <falcon@ivan.Harhan.ORG>
parents: 192
diff changeset
199 {
37f78f986a0a grokdsn: tree dump implemented
Michael Spacefalcon <falcon@ivan.Harhan.ORG>
parents: 192
diff changeset
200 int sec, next, num;
37f78f986a0a grokdsn: tree dump implemented
Michael Spacefalcon <falcon@ivan.Harhan.ORG>
parents: 192
diff changeset
201
37f78f986a0a grokdsn: tree dump implemented
Michael Spacefalcon <falcon@ivan.Harhan.ORG>
parents: 192
diff changeset
202 sec = le32toh(cdf_header->dir_start);
37f78f986a0a grokdsn: tree dump implemented
Michael Spacefalcon <falcon@ivan.Harhan.ORG>
parents: 192
diff changeset
203 for (num = 0; sec >= 0; sec = next) {
37f78f986a0a grokdsn: tree dump implemented
Michael Spacefalcon <falcon@ivan.Harhan.ORG>
parents: 192
diff changeset
204 if (num >= MAX_DIR_SECTORS) {
37f78f986a0a grokdsn: tree dump implemented
Michael Spacefalcon <falcon@ivan.Harhan.ORG>
parents: 192
diff changeset
205 fprintf(stderr, "error: MAX_DIR_SECTORS exceeded\n");
37f78f986a0a grokdsn: tree dump implemented
Michael Spacefalcon <falcon@ivan.Harhan.ORG>
parents: 192
diff changeset
206 exit(1);
37f78f986a0a grokdsn: tree dump implemented
Michael Spacefalcon <falcon@ivan.Harhan.ORG>
parents: 192
diff changeset
207 }
37f78f986a0a grokdsn: tree dump implemented
Michael Spacefalcon <falcon@ivan.Harhan.ORG>
parents: 192
diff changeset
208 dir_secids[num++] = sec;
37f78f986a0a grokdsn: tree dump implemented
Michael Spacefalcon <falcon@ivan.Harhan.ORG>
parents: 192
diff changeset
209 next = get_fat_entry(sec);
37f78f986a0a grokdsn: tree dump implemented
Michael Spacefalcon <falcon@ivan.Harhan.ORG>
parents: 192
diff changeset
210 }
37f78f986a0a grokdsn: tree dump implemented
Michael Spacefalcon <falcon@ivan.Harhan.ORG>
parents: 192
diff changeset
211 dir_nsectors = num;
37f78f986a0a grokdsn: tree dump implemented
Michael Spacefalcon <falcon@ivan.Harhan.ORG>
parents: 192
diff changeset
212 return(0);
37f78f986a0a grokdsn: tree dump implemented
Michael Spacefalcon <falcon@ivan.Harhan.ORG>
parents: 192
diff changeset
213 }
37f78f986a0a grokdsn: tree dump implemented
Michael Spacefalcon <falcon@ivan.Harhan.ORG>
parents: 192
diff changeset
214
37f78f986a0a grokdsn: tree dump implemented
Michael Spacefalcon <falcon@ivan.Harhan.ORG>
parents: 192
diff changeset
215 u_char *
37f78f986a0a grokdsn: tree dump implemented
Michael Spacefalcon <falcon@ivan.Harhan.ORG>
parents: 192
diff changeset
216 get_dir_sector(dir_sec_no)
37f78f986a0a grokdsn: tree dump implemented
Michael Spacefalcon <falcon@ivan.Harhan.ORG>
parents: 192
diff changeset
217 unsigned dir_sec_no;
37f78f986a0a grokdsn: tree dump implemented
Michael Spacefalcon <falcon@ivan.Harhan.ORG>
parents: 192
diff changeset
218 {
37f78f986a0a grokdsn: tree dump implemented
Michael Spacefalcon <falcon@ivan.Harhan.ORG>
parents: 192
diff changeset
219 unsigned secid;
37f78f986a0a grokdsn: tree dump implemented
Michael Spacefalcon <falcon@ivan.Harhan.ORG>
parents: 192
diff changeset
220
37f78f986a0a grokdsn: tree dump implemented
Michael Spacefalcon <falcon@ivan.Harhan.ORG>
parents: 192
diff changeset
221 if (dir_sec_no > dir_nsectors) {
37f78f986a0a grokdsn: tree dump implemented
Michael Spacefalcon <falcon@ivan.Harhan.ORG>
parents: 192
diff changeset
222 fprintf(stderr,
37f78f986a0a grokdsn: tree dump implemented
Michael Spacefalcon <falcon@ivan.Harhan.ORG>
parents: 192
diff changeset
223 "error: request for dir sector #%u; we only have %u in total\n",
37f78f986a0a grokdsn: tree dump implemented
Michael Spacefalcon <falcon@ivan.Harhan.ORG>
parents: 192
diff changeset
224 dir_sec_no, dir_nsectors);
37f78f986a0a grokdsn: tree dump implemented
Michael Spacefalcon <falcon@ivan.Harhan.ORG>
parents: 192
diff changeset
225 exit(1);
37f78f986a0a grokdsn: tree dump implemented
Michael Spacefalcon <falcon@ivan.Harhan.ORG>
parents: 192
diff changeset
226 }
37f78f986a0a grokdsn: tree dump implemented
Michael Spacefalcon <falcon@ivan.Harhan.ORG>
parents: 192
diff changeset
227 secid = dir_secids[dir_sec_no];
37f78f986a0a grokdsn: tree dump implemented
Michael Spacefalcon <falcon@ivan.Harhan.ORG>
parents: 192
diff changeset
228 return get_sector_ptr(secid);
37f78f986a0a grokdsn: tree dump implemented
Michael Spacefalcon <falcon@ivan.Harhan.ORG>
parents: 192
diff changeset
229 }
37f78f986a0a grokdsn: tree dump implemented
Michael Spacefalcon <falcon@ivan.Harhan.ORG>
parents: 192
diff changeset
230
37f78f986a0a grokdsn: tree dump implemented
Michael Spacefalcon <falcon@ivan.Harhan.ORG>
parents: 192
diff changeset
231 struct dir_entry *
37f78f986a0a grokdsn: tree dump implemented
Michael Spacefalcon <falcon@ivan.Harhan.ORG>
parents: 192
diff changeset
232 get_dir_entry(dirid)
37f78f986a0a grokdsn: tree dump implemented
Michael Spacefalcon <falcon@ivan.Harhan.ORG>
parents: 192
diff changeset
233 unsigned dirid;
37f78f986a0a grokdsn: tree dump implemented
Michael Spacefalcon <falcon@ivan.Harhan.ORG>
parents: 192
diff changeset
234 {
37f78f986a0a grokdsn: tree dump implemented
Michael Spacefalcon <falcon@ivan.Harhan.ORG>
parents: 192
diff changeset
235 unsigned dir_sec_no, entry_in_sec;
37f78f986a0a grokdsn: tree dump implemented
Michael Spacefalcon <falcon@ivan.Harhan.ORG>
parents: 192
diff changeset
236 struct dir_entry *dir_sector;
37f78f986a0a grokdsn: tree dump implemented
Michael Spacefalcon <falcon@ivan.Harhan.ORG>
parents: 192
diff changeset
237
37f78f986a0a grokdsn: tree dump implemented
Michael Spacefalcon <falcon@ivan.Harhan.ORG>
parents: 192
diff changeset
238 dir_sec_no = dirid / 4;
37f78f986a0a grokdsn: tree dump implemented
Michael Spacefalcon <falcon@ivan.Harhan.ORG>
parents: 192
diff changeset
239 entry_in_sec = dirid % 4;
37f78f986a0a grokdsn: tree dump implemented
Michael Spacefalcon <falcon@ivan.Harhan.ORG>
parents: 192
diff changeset
240 dir_sector = (struct dir_entry *) get_dir_sector(dir_sec_no);
37f78f986a0a grokdsn: tree dump implemented
Michael Spacefalcon <falcon@ivan.Harhan.ORG>
parents: 192
diff changeset
241 return dir_sector + entry_in_sec;
37f78f986a0a grokdsn: tree dump implemented
Michael Spacefalcon <falcon@ivan.Harhan.ORG>
parents: 192
diff changeset
242 }
37f78f986a0a grokdsn: tree dump implemented
Michael Spacefalcon <falcon@ivan.Harhan.ORG>
parents: 192
diff changeset
243
37f78f986a0a grokdsn: tree dump implemented
Michael Spacefalcon <falcon@ivan.Harhan.ORG>
parents: 192
diff changeset
244 dump_dir_entry(rec, indent)
37f78f986a0a grokdsn: tree dump implemented
Michael Spacefalcon <falcon@ivan.Harhan.ORG>
parents: 192
diff changeset
245 struct dir_entry *rec;
37f78f986a0a grokdsn: tree dump implemented
Michael Spacefalcon <falcon@ivan.Harhan.ORG>
parents: 192
diff changeset
246 {
37f78f986a0a grokdsn: tree dump implemented
Michael Spacefalcon <falcon@ivan.Harhan.ORG>
parents: 192
diff changeset
247 int i, u;
37f78f986a0a grokdsn: tree dump implemented
Michael Spacefalcon <falcon@ivan.Harhan.ORG>
parents: 192
diff changeset
248
37f78f986a0a grokdsn: tree dump implemented
Michael Spacefalcon <falcon@ivan.Harhan.ORG>
parents: 192
diff changeset
249 for (i = indent; i; i--)
37f78f986a0a grokdsn: tree dump implemented
Michael Spacefalcon <falcon@ivan.Harhan.ORG>
parents: 192
diff changeset
250 putchar(' ');
37f78f986a0a grokdsn: tree dump implemented
Michael Spacefalcon <falcon@ivan.Harhan.ORG>
parents: 192
diff changeset
251 for (i = 0; i < 32; i++) {
37f78f986a0a grokdsn: tree dump implemented
Michael Spacefalcon <falcon@ivan.Harhan.ORG>
parents: 192
diff changeset
252 u = le16toh(rec->uni_name[i]);
37f78f986a0a grokdsn: tree dump implemented
Michael Spacefalcon <falcon@ivan.Harhan.ORG>
parents: 192
diff changeset
253 if (u == 0)
37f78f986a0a grokdsn: tree dump implemented
Michael Spacefalcon <falcon@ivan.Harhan.ORG>
parents: 192
diff changeset
254 break;
37f78f986a0a grokdsn: tree dump implemented
Michael Spacefalcon <falcon@ivan.Harhan.ORG>
parents: 192
diff changeset
255 if (u >= ' ' && u <= '~')
37f78f986a0a grokdsn: tree dump implemented
Michael Spacefalcon <falcon@ivan.Harhan.ORG>
parents: 192
diff changeset
256 putchar(u);
37f78f986a0a grokdsn: tree dump implemented
Michael Spacefalcon <falcon@ivan.Harhan.ORG>
parents: 192
diff changeset
257 else
37f78f986a0a grokdsn: tree dump implemented
Michael Spacefalcon <falcon@ivan.Harhan.ORG>
parents: 192
diff changeset
258 printf("<%04X>", u);
37f78f986a0a grokdsn: tree dump implemented
Michael Spacefalcon <falcon@ivan.Harhan.ORG>
parents: 192
diff changeset
259 }
37f78f986a0a grokdsn: tree dump implemented
Michael Spacefalcon <falcon@ivan.Harhan.ORG>
parents: 192
diff changeset
260 printf(" (type %02X, length %u)\n", rec->type, rec->content_bytes);
37f78f986a0a grokdsn: tree dump implemented
Michael Spacefalcon <falcon@ivan.Harhan.ORG>
parents: 192
diff changeset
261 return(0);
37f78f986a0a grokdsn: tree dump implemented
Michael Spacefalcon <falcon@ivan.Harhan.ORG>
parents: 192
diff changeset
262 }
37f78f986a0a grokdsn: tree dump implemented
Michael Spacefalcon <falcon@ivan.Harhan.ORG>
parents: 192
diff changeset
263
37f78f986a0a grokdsn: tree dump implemented
Michael Spacefalcon <falcon@ivan.Harhan.ORG>
parents: 192
diff changeset
264 dump_dir_level(dirid, indent)
37f78f986a0a grokdsn: tree dump implemented
Michael Spacefalcon <falcon@ivan.Harhan.ORG>
parents: 192
diff changeset
265 unsigned dirid;
37f78f986a0a grokdsn: tree dump implemented
Michael Spacefalcon <falcon@ivan.Harhan.ORG>
parents: 192
diff changeset
266 {
37f78f986a0a grokdsn: tree dump implemented
Michael Spacefalcon <falcon@ivan.Harhan.ORG>
parents: 192
diff changeset
267 struct dir_entry *rec;
37f78f986a0a grokdsn: tree dump implemented
Michael Spacefalcon <falcon@ivan.Harhan.ORG>
parents: 192
diff changeset
268 int32_t ndir;
37f78f986a0a grokdsn: tree dump implemented
Michael Spacefalcon <falcon@ivan.Harhan.ORG>
parents: 192
diff changeset
269
37f78f986a0a grokdsn: tree dump implemented
Michael Spacefalcon <falcon@ivan.Harhan.ORG>
parents: 192
diff changeset
270 rec = get_dir_entry(dirid);
37f78f986a0a grokdsn: tree dump implemented
Michael Spacefalcon <falcon@ivan.Harhan.ORG>
parents: 192
diff changeset
271 ndir = le32toh(rec->left_child);
37f78f986a0a grokdsn: tree dump implemented
Michael Spacefalcon <falcon@ivan.Harhan.ORG>
parents: 192
diff changeset
272 if (ndir >= 0)
37f78f986a0a grokdsn: tree dump implemented
Michael Spacefalcon <falcon@ivan.Harhan.ORG>
parents: 192
diff changeset
273 dump_dir_level(ndir, indent);
37f78f986a0a grokdsn: tree dump implemented
Michael Spacefalcon <falcon@ivan.Harhan.ORG>
parents: 192
diff changeset
274 dump_dir_entry(rec, indent);
194
805e99848aea grokdsn: buglet in the hierarchy traversal order
Michael Spacefalcon <falcon@ivan.Harhan.ORG>
parents: 193
diff changeset
275 ndir = le32toh(rec->subtree_dirid);
805e99848aea grokdsn: buglet in the hierarchy traversal order
Michael Spacefalcon <falcon@ivan.Harhan.ORG>
parents: 193
diff changeset
276 if (ndir >= 0)
805e99848aea grokdsn: buglet in the hierarchy traversal order
Michael Spacefalcon <falcon@ivan.Harhan.ORG>
parents: 193
diff changeset
277 dump_dir_level(ndir, indent + 2);
193
37f78f986a0a grokdsn: tree dump implemented
Michael Spacefalcon <falcon@ivan.Harhan.ORG>
parents: 192
diff changeset
278 ndir = le32toh(rec->right_child);
37f78f986a0a grokdsn: tree dump implemented
Michael Spacefalcon <falcon@ivan.Harhan.ORG>
parents: 192
diff changeset
279 if (ndir >= 0)
37f78f986a0a grokdsn: tree dump implemented
Michael Spacefalcon <falcon@ivan.Harhan.ORG>
parents: 192
diff changeset
280 dump_dir_level(ndir, indent);
37f78f986a0a grokdsn: tree dump implemented
Michael Spacefalcon <falcon@ivan.Harhan.ORG>
parents: 192
diff changeset
281 return(0);
37f78f986a0a grokdsn: tree dump implemented
Michael Spacefalcon <falcon@ivan.Harhan.ORG>
parents: 192
diff changeset
282 }
37f78f986a0a grokdsn: tree dump implemented
Michael Spacefalcon <falcon@ivan.Harhan.ORG>
parents: 192
diff changeset
283
37f78f986a0a grokdsn: tree dump implemented
Michael Spacefalcon <falcon@ivan.Harhan.ORG>
parents: 192
diff changeset
284 dump_dir_tree()
37f78f986a0a grokdsn: tree dump implemented
Michael Spacefalcon <falcon@ivan.Harhan.ORG>
parents: 192
diff changeset
285 {
37f78f986a0a grokdsn: tree dump implemented
Michael Spacefalcon <falcon@ivan.Harhan.ORG>
parents: 192
diff changeset
286 init_fat_access();
37f78f986a0a grokdsn: tree dump implemented
Michael Spacefalcon <falcon@ivan.Harhan.ORG>
parents: 192
diff changeset
287 locate_dir_sectors();
37f78f986a0a grokdsn: tree dump implemented
Michael Spacefalcon <falcon@ivan.Harhan.ORG>
parents: 192
diff changeset
288 dump_dir_level(0, 0);
37f78f986a0a grokdsn: tree dump implemented
Michael Spacefalcon <falcon@ivan.Harhan.ORG>
parents: 192
diff changeset
289 return(0);
37f78f986a0a grokdsn: tree dump implemented
Michael Spacefalcon <falcon@ivan.Harhan.ORG>
parents: 192
diff changeset
290 }
37f78f986a0a grokdsn: tree dump implemented
Michael Spacefalcon <falcon@ivan.Harhan.ORG>
parents: 192
diff changeset
291
191
0c631396b8ce started grokdsn utility, parses header successfully
Michael Spacefalcon <falcon@ivan.Harhan.ORG>
parents:
diff changeset
292 main(argc, argv)
0c631396b8ce started grokdsn utility, parses header successfully
Michael Spacefalcon <falcon@ivan.Harhan.ORG>
parents:
diff changeset
293 char **argv;
0c631396b8ce started grokdsn utility, parses header successfully
Michael Spacefalcon <falcon@ivan.Harhan.ORG>
parents:
diff changeset
294 {
0c631396b8ce started grokdsn utility, parses header successfully
Michael Spacefalcon <falcon@ivan.Harhan.ORG>
parents:
diff changeset
295 if (sizeof(struct cdf_header) != 512) {
0c631396b8ce started grokdsn utility, parses header successfully
Michael Spacefalcon <falcon@ivan.Harhan.ORG>
parents:
diff changeset
296 fprintf(stderr, "error: struct cdf_header is misdefined\n");
0c631396b8ce started grokdsn utility, parses header successfully
Michael Spacefalcon <falcon@ivan.Harhan.ORG>
parents:
diff changeset
297 exit(1);
0c631396b8ce started grokdsn utility, parses header successfully
Michael Spacefalcon <falcon@ivan.Harhan.ORG>
parents:
diff changeset
298 }
193
37f78f986a0a grokdsn: tree dump implemented
Michael Spacefalcon <falcon@ivan.Harhan.ORG>
parents: 192
diff changeset
299 if (sizeof(struct dir_entry) != 128) {
37f78f986a0a grokdsn: tree dump implemented
Michael Spacefalcon <falcon@ivan.Harhan.ORG>
parents: 192
diff changeset
300 fprintf(stderr, "error: struct dir_entry is misdefined\n");
37f78f986a0a grokdsn: tree dump implemented
Michael Spacefalcon <falcon@ivan.Harhan.ORG>
parents: 192
diff changeset
301 exit(1);
37f78f986a0a grokdsn: tree dump implemented
Michael Spacefalcon <falcon@ivan.Harhan.ORG>
parents: 192
diff changeset
302 }
192
5d84f63eff72 grokdsn: able to follow the FAT chain for the directory
Michael Spacefalcon <falcon@ivan.Harhan.ORG>
parents: 191
diff changeset
303 if (argc < 3) {
5d84f63eff72 grokdsn: able to follow the FAT chain for the directory
Michael Spacefalcon <falcon@ivan.Harhan.ORG>
parents: 191
diff changeset
304 fprintf(stderr, "usage: %s binfile.dsn <op> [args]\n", argv[0]);
191
0c631396b8ce started grokdsn utility, parses header successfully
Michael Spacefalcon <falcon@ivan.Harhan.ORG>
parents:
diff changeset
305 exit(1);
0c631396b8ce started grokdsn utility, parses header successfully
Michael Spacefalcon <falcon@ivan.Harhan.ORG>
parents:
diff changeset
306 }
0c631396b8ce started grokdsn utility, parses header successfully
Michael Spacefalcon <falcon@ivan.Harhan.ORG>
parents:
diff changeset
307 dsnfilename = argv[1];
0c631396b8ce started grokdsn utility, parses header successfully
Michael Spacefalcon <falcon@ivan.Harhan.ORG>
parents:
diff changeset
308 open_and_mmap_file();
0c631396b8ce started grokdsn utility, parses header successfully
Michael Spacefalcon <falcon@ivan.Harhan.ORG>
parents:
diff changeset
309 if (!strcmp(argv[2], "hdr"))
0c631396b8ce started grokdsn utility, parses header successfully
Michael Spacefalcon <falcon@ivan.Harhan.ORG>
parents:
diff changeset
310 return dump_cdf_header();
192
5d84f63eff72 grokdsn: able to follow the FAT chain for the directory
Michael Spacefalcon <falcon@ivan.Harhan.ORG>
parents: 191
diff changeset
311 if (!strcmp(argv[2], "fatchain"))
5d84f63eff72 grokdsn: able to follow the FAT chain for the directory
Michael Spacefalcon <falcon@ivan.Harhan.ORG>
parents: 191
diff changeset
312 return dump_fat_chain(argv[3]);
193
37f78f986a0a grokdsn: tree dump implemented
Michael Spacefalcon <falcon@ivan.Harhan.ORG>
parents: 192
diff changeset
313 if (!strcmp(argv[2], "ls"))
37f78f986a0a grokdsn: tree dump implemented
Michael Spacefalcon <falcon@ivan.Harhan.ORG>
parents: 192
diff changeset
314 return dump_dir_tree();
191
0c631396b8ce started grokdsn utility, parses header successfully
Michael Spacefalcon <falcon@ivan.Harhan.ORG>
parents:
diff changeset
315 fprintf(stderr, "error: \"%s\" is not a recognized command\n", argv[2]);
0c631396b8ce started grokdsn utility, parses header successfully
Michael Spacefalcon <falcon@ivan.Harhan.ORG>
parents:
diff changeset
316 exit(1);
0c631396b8ce started grokdsn utility, parses header successfully
Michael Spacefalcon <falcon@ivan.Harhan.ORG>
parents:
diff changeset
317 }