1 | /* |
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2 | * Copyright (c) 2016 Chris Johns <chrisj.rtems.org>. All rights reserved. |
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3 | * |
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4 | * The license and distribution terms for this file may be |
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5 | * found in the file LICENSE in this distribution or at |
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6 | * http://www.rtems.org/license/LICENSE. |
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7 | */ |
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8 | |
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9 | #ifdef HAVE_CONFIG_H |
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10 | #include "config.h" |
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11 | #endif |
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12 | |
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13 | #include <rtems/untar.h> |
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14 | |
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15 | int Untar_XzChunkContext_Init( |
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16 | Untar_XzChunkContext *ctx, |
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17 | enum xz_mode mode, |
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18 | uint32_t dict_max, |
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19 | void *inflateBuffer, |
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20 | size_t inflateBufferSize |
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21 | ) |
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22 | { |
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23 | int status = UNTAR_SUCCESSFUL; |
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24 | |
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25 | xz_crc32_init(); |
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26 | |
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27 | Untar_ChunkContext_Init(&ctx->base); |
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28 | ctx->inflateBuffer = inflateBuffer; |
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29 | ctx->inflateBufferSize = inflateBufferSize; |
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30 | ctx->strm = xz_dec_init(mode, dict_max); |
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31 | if (ctx->strm == NULL) { |
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32 | status = UNTAR_FAIL; |
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33 | } |
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34 | |
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35 | return status; |
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36 | } |
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37 | |
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38 | int Untar_FromXzChunk_Print( |
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39 | Untar_XzChunkContext *ctx, |
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40 | const void *chunk, |
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41 | size_t chunk_size, |
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42 | const rtems_printer *printer |
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43 | ) |
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44 | { |
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45 | int untar_status = UNTAR_SUCCESSFUL; |
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46 | enum xz_ret status = XZ_OK; |
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47 | |
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48 | if (ctx->strm == NULL) |
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49 | return UNTAR_FAIL; |
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50 | |
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51 | ctx->buf.in = (const uint8_t*) chunk; |
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52 | ctx->buf.in_pos = 0; |
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53 | ctx->buf.in_size = chunk_size; |
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54 | ctx->buf.out = (uint8_t *) ctx->inflateBuffer; |
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55 | |
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56 | /* Inflate until output buffer is not full */ |
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57 | do { |
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58 | ctx->buf.out_pos = 0; |
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59 | ctx->buf.out_size = ctx->inflateBufferSize; |
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60 | status = xz_dec_run(ctx->strm, &ctx->buf); |
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61 | if (status == XZ_OPTIONS_ERROR) |
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62 | status = XZ_OK; |
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63 | if (status == XZ_OK && ctx->buf.out_pos != 0) { |
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64 | untar_status = Untar_FromChunk_Print(&ctx->base, |
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65 | ctx->inflateBuffer, |
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66 | ctx->buf.out_pos, |
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67 | NULL); |
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68 | if (untar_status != UNTAR_SUCCESSFUL) { |
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69 | break; |
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70 | } |
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71 | } |
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72 | } while (ctx->buf.in_pos != ctx->buf.in_size && status == XZ_OK); |
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73 | |
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74 | if (status != XZ_OK) { |
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75 | xz_dec_end(ctx->strm); |
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76 | ctx->strm = NULL; |
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77 | if (untar_status == UNTAR_SUCCESSFUL) { |
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78 | switch (status) { |
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79 | case XZ_OK: |
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80 | case XZ_STREAM_END: |
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81 | break; |
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82 | case XZ_UNSUPPORTED_CHECK: |
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83 | rtems_printf(printer, "XZ unsupported check\n"); |
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84 | break; |
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85 | case XZ_MEM_ERROR: |
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86 | rtems_printf(printer, "XZ memory allocation error\n"); |
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87 | break; |
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88 | case XZ_MEMLIMIT_ERROR: |
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89 | rtems_printf(printer, "XZ memory usage limit reached\n"); |
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90 | break; |
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91 | case XZ_FORMAT_ERROR: |
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92 | rtems_printf(printer, "Not a XZ file\n"); |
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93 | break; |
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94 | case XZ_OPTIONS_ERROR: |
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95 | rtems_printf(printer, "Unsupported options in XZ header\n"); |
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96 | break; |
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97 | case XZ_DATA_ERROR: |
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98 | rtems_printf(printer, "XZ file is corrupt (data)\n"); |
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99 | break; |
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100 | case XZ_BUF_ERROR: |
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101 | rtems_printf(printer, "XZ file is corrupt (buffer)\n"); |
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102 | break; |
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103 | } |
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104 | untar_status = UNTAR_FAIL; |
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105 | } |
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106 | } |
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107 | |
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108 | return untar_status; |
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109 | } |
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