| File: | s/cmd/atob/atob.c |
| Warning: | line 126, column 13 Although the value stored to 'status' is used in the enclosing expression, the value is never actually read from 'status' |
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| 1 | /* This Source Code Form is subject to the terms of the Mozilla Public |
| 2 | * License, v. 2.0. If a copy of the MPL was not distributed with this |
| 3 | * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ |
| 4 | |
| 5 | #include "plgetopt.h" |
| 6 | #include "secutil.h" |
| 7 | #include "nssb64.h" |
| 8 | #include <errno(*__errno_location ()).h> |
| 9 | |
| 10 | #if defined(XP_WIN) || (defined(__sun) && !defined(SVR4)) |
| 11 | #if !defined(WIN32) |
| 12 | extern int fread(char *, size_t, size_t, FILE *); |
| 13 | extern int fwrite(char *, size_t, size_t, FILE *); |
| 14 | extern int fprintf(FILE *, char *, ...); |
| 15 | #endif |
| 16 | #endif |
| 17 | |
| 18 | #if defined(WIN32) |
| 19 | #include "fcntl.h" |
| 20 | #include "io.h" |
| 21 | #endif |
| 22 | |
| 23 | static PRInt32 |
| 24 | output_binary(void *arg, const unsigned char *obuf, PRInt32 size) |
| 25 | { |
| 26 | FILE *outFile = arg; |
| 27 | int nb; |
| 28 | |
| 29 | nb = fwrite(obuf, 1, size, outFile); |
| 30 | if (nb != size) { |
| 31 | PORT_SetErrorPORT_SetError_Util(SEC_ERROR_IO); |
| 32 | return -1; |
| 33 | } |
| 34 | |
| 35 | return nb; |
| 36 | } |
| 37 | |
| 38 | static PRBool |
| 39 | isBase64Char(char c) |
| 40 | { |
| 41 | return ((c >= 'A' && c <= 'Z') || |
| 42 | (c >= 'a' && c <= 'z') || |
| 43 | (c >= '0' && c <= '9') || |
| 44 | c == '+' || c == '/' || |
| 45 | c == '='); |
| 46 | } |
| 47 | |
| 48 | static SECStatus |
| 49 | decode_file(FILE *outFile, FILE *inFile) |
| 50 | { |
| 51 | NSSBase64Decoder *cx; |
| 52 | SECStatus status = SECFailure; |
| 53 | char ibuf[4096]; |
| 54 | const char *ptr; |
| 55 | |
| 56 | cx = NSSBase64Decoder_CreateNSSBase64Decoder_Create_Util(output_binary, outFile); |
| 57 | if (!cx) { |
| 58 | return -1; |
| 59 | } |
| 60 | |
| 61 | for (;;) { |
| 62 | if (feof(inFile)) |
| 63 | break; |
| 64 | if (!fgets(ibuf, sizeof(ibuf), inFile)) { |
| 65 | if (ferror(inFile)) { |
| 66 | PORT_SetErrorPORT_SetError_Util(SEC_ERROR_IO); |
| 67 | goto loser; |
| 68 | } |
| 69 | /* eof */ |
| 70 | break; |
| 71 | } |
| 72 | for (ptr = ibuf; *ptr; ++ptr) { |
| 73 | char c = *ptr; |
| 74 | if (c == '\n' || c == '\r') { |
| 75 | break; /* found end of line */ |
| 76 | } |
| 77 | if (!isBase64Char(c)) { |
| 78 | ptr = ibuf; /* ignore line */ |
| 79 | break; |
| 80 | } |
| 81 | } |
| 82 | if (ibuf == ptr) { |
| 83 | continue; /* skip empty or non-base64 line */ |
| 84 | } |
| 85 | |
| 86 | status = NSSBase64Decoder_UpdateNSSBase64Decoder_Update_Util(cx, ibuf, ptr - ibuf); |
| 87 | if (status != SECSuccess) |
| 88 | goto loser; |
| 89 | } |
| 90 | |
| 91 | return NSSBase64Decoder_DestroyNSSBase64Decoder_Destroy_Util(cx, PR_FALSE0); |
| 92 | |
| 93 | loser: |
| 94 | (void)NSSBase64Decoder_DestroyNSSBase64Decoder_Destroy_Util(cx, PR_TRUE1); |
| 95 | return status; |
| 96 | } |
| 97 | |
| 98 | static void |
| 99 | Usage(char *progName) |
| 100 | { |
| 101 | fprintf(stderrstderr, |
| 102 | "Usage: %s [-i input] [-o output]\n", |
| 103 | progName); |
| 104 | fprintf(stderrstderr, "%-20s Define an input file to use (default is stdin)\n", |
| 105 | "-i input"); |
| 106 | fprintf(stderrstderr, "%-20s Define an output file to use (default is stdout)\n", |
| 107 | "-o output"); |
| 108 | } |
| 109 | |
| 110 | int |
| 111 | main(int argc, char **argv) |
| 112 | { |
| 113 | char *progName; |
| 114 | SECStatus rv; |
| 115 | FILE *inFile = NULL((void*)0), *outFile = NULL((void*)0); |
| 116 | PRBool closeIn = PR_TRUE1, closeOut = PR_TRUE1; |
| 117 | PLOptState *optstate = NULL((void*)0); |
| 118 | PLOptStatus status; |
| 119 | int exitCode = -1; |
| 120 | |
| 121 | progName = strrchr(argv[0], '/'); |
| 122 | progName = progName ? progName + 1 : argv[0]; |
| 123 | |
| 124 | /* Parse command line arguments */ |
| 125 | optstate = PL_CreateOptState(argc, argv, "?hi:o:"); |
| 126 | while ((status = PL_GetNextOpt(optstate)) == PL_OPT_OK) { |
Although the value stored to 'status' is used in the enclosing expression, the value is never actually read from 'status' | |
| 127 | switch (optstate->option) { |
| 128 | case '?': |
| 129 | case 'h': |
| 130 | Usage(progName); |
| 131 | goto loser; |
| 132 | break; |
| 133 | |
| 134 | case 'i': |
| 135 | inFile = fopen(optstate->value, "r"); |
| 136 | if (!inFile) { |
| 137 | fprintf(stderrstderr, "%s: unable to open \"%s\" for reading\n", |
| 138 | progName, optstate->value); |
| 139 | goto loser; |
| 140 | } |
| 141 | break; |
| 142 | |
| 143 | case 'o': |
| 144 | outFile = fopen(optstate->value, "wb"); |
| 145 | if (!outFile) { |
| 146 | fprintf(stderrstderr, "%s: unable to open \"%s\" for writing\n", |
| 147 | progName, optstate->value); |
| 148 | goto loser; |
| 149 | } |
| 150 | break; |
| 151 | } |
| 152 | } |
| 153 | if (!inFile) { |
| 154 | inFile = stdinstdin; |
| 155 | closeIn = PR_FALSE0; |
| 156 | } |
| 157 | if (!outFile) { |
| 158 | #if defined(WIN32) |
| 159 | int smrv = _setmode(_fileno(stdoutstdout), _O_BINARY); |
| 160 | if (smrv == -1) { |
| 161 | fprintf(stderrstderr, |
| 162 | "%s: Cannot change stdout to binary mode. Use -o option instead.\n", |
| 163 | progName); |
| 164 | goto loser; |
| 165 | } |
| 166 | #endif |
| 167 | outFile = stdoutstdout; |
| 168 | closeOut = PR_FALSE0; |
| 169 | } |
| 170 | rv = decode_file(outFile, inFile); |
| 171 | if (rv != SECSuccess) { |
| 172 | fprintf(stderrstderr, "%s: lossage: error=%d errno=%d\n", |
| 173 | progName, PORT_GetErrorPORT_GetError_Util(), errno(*__errno_location ())); |
| 174 | goto loser; |
| 175 | } |
| 176 | exitCode = 0; |
| 177 | loser: |
| 178 | if (optstate) { |
| 179 | PL_DestroyOptState(optstate); |
| 180 | } |
| 181 | if (inFile && closeIn) { |
| 182 | fclose(inFile); |
| 183 | } |
| 184 | if (outFile && closeOut) { |
| 185 | fclose(outFile); |
| 186 | } |
| 187 | return exitCode; |
| 188 | } |