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dup-check.c - dedup - deduplicating backup program |
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git clone git://bitreich.org/dedup/ git://enlrupgkhuxnvlhsf6lc3fziv5h2hhfrinws65d7roiv6bfj7d652fid.onion/dedup/ (git://bitreich.org) |
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LICENSE |
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--- |
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dup-check.c (2750B) |
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--- |
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1 #include <sys/types.h> |
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2 #include <sys/stat.h> |
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3 |
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4 #include <err.h> |
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5 #include <fcntl.h> |
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6 #include <limits.h> |
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7 #include <stdio.h> |
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8 #include <stdlib.h> |
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9 #include <unistd.h> |
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10 |
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11 #include <sodium.h> |
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12 |
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13 #include "arg.h" |
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14 #include "block.h" |
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15 #include "config.h" |
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16 #include "key.h" |
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17 #include "lock.h" |
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18 #include "misc.h" |
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19 #include "snap.h" |
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20 #include "state.h" |
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21 |
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22 struct param param; |
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23 int verbose; |
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24 char *argv0; |
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25 |
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26 static void |
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27 loadstate(char *repo) |
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28 { |
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29 char path[PATH_MAX]; |
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30 int fd; |
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31 |
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32 if (snprintf(path, sizeof(path), "%s/state", repo) >= sizeof(path)) |
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33 errx(1, "snprintf: %s: path too long", path); |
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34 fd = open(path, O_RDONLY); |
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35 if (fd < 0) |
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36 err(1, "open: %s", path); |
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37 if (readstate(fd, ¶m) < 0) |
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38 printerr("readstate: %s", path); |
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39 if (close(fd) < 0) |
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40 err(1, "close: %s", path); |
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41 } |
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42 |
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43 static void |
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44 loadkey(char *keyfile) |
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45 { |
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46 int fd; |
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47 |
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48 if (keyfile == NULL) |
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49 return; |
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50 |
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51 fd = open(keyfile, O_RDONLY); |
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52 if (fd < 0) |
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53 err(1, "open: %s", keyfile); |
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54 if (readkey(fd, param.key, sizeof(param.key)) < 0) |
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55 printerr("readkey: %s", keyfile); |
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56 param.keyloaded = 1; |
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57 if (close(fd) < 0) |
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58 err(1, "close: %s", keyfile); |
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59 } |
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60 |
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61 static void |
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62 check(struct sctx *sctx, struct bctx *bctx) |
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63 { |
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64 unsigned char md[MDSIZE]; |
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65 int n; |
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66 |
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67 if (sodium_init() < 0) |
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68 errx(1, "sodium_init: failed"); |
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69 |
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70 while ((n = sget(sctx, md)) == MDSIZE) { |
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71 char mdstr[MDSIZE * 2 + 1]; |
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72 int r; |
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73 |
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74 if ((r = bcheck(bctx, md)) < 0) { |
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75 printerr("bcheck"); |
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76 } else if (r > 0) { |
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77 sodium_bin2hex(mdstr, sizeof(mdstr), md, MDSIZE); |
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78 puts(mdstr); |
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79 } |
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80 } |
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81 if (n < 0) |
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82 printerr("sget"); |
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83 } |
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84 |
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85 static void |
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86 usage(void) |
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87 { |
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88 fprintf(stderr, "usage: %s [-v] [-k keyfile] [-r repo] name\n", argv0); |
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89 exit(1); |
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90 } |
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91 |
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92 int |
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93 main(int argc, char *argv[]) |
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94 { |
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95 char spath[PATH_MAX]; |
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96 char bpath[PATH_MAX]; |
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97 struct sctx *sctx; |
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98 struct bctx *bctx; |
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99 char *keyfile = NULL; |
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100 char *repo = "."; |
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101 int lfd; |
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102 |
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103 ARGBEGIN { |
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104 case 'k': |
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105 keyfile = EARGF(usage()); |
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106 break; |
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107 case 'r': |
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108 repo = EARGF(usage()); |
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109 break; |
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110 case 'v': |
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111 verbose++; |
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112 break; |
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113 default: |
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114 usage(); |
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115 } ARGEND |
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116 |
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117 if (argc != 1) |
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118 usage(); |
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119 |
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120 if (snprintf(spath, sizeof(spath), "%s/archive/%s", |
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121 repo, argv[0]) >= sizeof(spath)) |
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122 errx(1, "snprintf: %s: path too long", spath); |
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123 if (snprintf(bpath, sizeof(bpath), "%s/storage", |
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124 repo) >= sizeof(bpath)) |
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125 errx(1, "snprintf: %s: path too long", bpath); |
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126 |
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127 if ((lfd = lockrepo(repo)) < 0) |
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128 errx(1, "failed to lock repository"); |
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129 |
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130 loadkey(keyfile); |
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131 loadstate(repo); |
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132 |
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133 if (sopen(spath, S_READ, 0600, &sctx) < 0) |
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134 printerr("sopen: %s", spath); |
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135 if (bopen(bpath, B_READ, 0600, &bctx) < 0) |
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136 printerr("bopen: %s", bpath); |
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137 |
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138 check(sctx, bctx); |
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139 |
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140 if (bclose(bctx) < 0) |
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141 printerr("bclose: %s", bpath); |
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142 if (sclose(sctx) < 0) |
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143 printerr("sclose: %s", spath); |
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144 |
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145 if (unlockrepo(lfd) < 0) |
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146 errx(1, "failed to unlock repository"); |
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147 |
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148 return 0; |
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149 } |
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