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1 /* Distributed Checksum Clearinghouse |
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2 * |
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3 * Copyright (c) 2008 by Rhyolite Software, LLC |
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4 * |
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5 * This agreement is not applicable to any entity which sells anti-spam |
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6 * solutions to others or provides an anti-spam solution as part of a |
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7 * security solution sold to other entities, or to a private network |
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8 * which employs the DCC or uses data provided by operation of the DCC |
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9 * but does not provide corresponding data to other users. |
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10 * |
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11 * Permission to use, copy, modify, and distribute this software without |
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12 * changes for any purpose with or without fee is hereby granted, provided |
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13 * that the above copyright notice and this permission notice appear in all |
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14 * copies and any distributed versions or copies are either unchanged |
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15 * or not called anything similar to "DCC" or "Distributed Checksum |
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16 * Clearinghouse". |
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17 * |
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18 * Parties not eligible to receive a license under this agreement can |
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19 * obtain a commercial license to use DCC by contacting Rhyolite Software |
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20 * at sales@rhyolite.com. |
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21 * |
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22 * A commercial license would be for Distributed Checksum and Reputation |
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23 * Clearinghouse software. That software includes additional features. This |
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24 * free license for Distributed ChecksumClearinghouse Software does not in any |
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25 * way grant permision to use Distributed Checksum and Reputation Clearinghouse |
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26 * software |
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27 * |
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28 * THE SOFTWARE IS PROVIDED "AS IS" AND RHYOLITE SOFTWARE, LLC DISCLAIMS ALL |
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29 * WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES |
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30 * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL RHYOLITE SOFTWARE, LLC |
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31 * BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES |
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32 * OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, |
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33 * WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, |
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34 * ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS |
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35 * SOFTWARE. |
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36 * |
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37 * Rhyolite Software DCC 1.3.103-1.24 $Revision$ |
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38 */ |
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39 |
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40 #include "dcc_defs.h" |
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41 |
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42 |
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43 /* Get a "word" ended by whitespace, while honoring backslashes |
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44 * on exit the remainder of the line is trimmed of leading whitespace */ |
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45 const char * /* 0 or remainder of line */ |
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46 dcc_parse_word(DCC_EMSG emsg, |
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47 char *tgt, /* copy word to here if not null */ |
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48 int tgt_len, /* includes trailing '\0' */ |
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49 const char *line, /* line of words */ |
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50 const char *fieldname, |
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51 const char *fnm, int lno) |
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52 { |
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53 DCC_FNM_LNO_BUF fnm_buf; |
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54 const char *p; |
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55 char c; |
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56 |
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57 if (!tgt_len && tgt) |
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58 dcc_logbad(EX_SOFTWARE, "bad tgt_len for dcc_get_word(%s)%s", |
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59 fieldname, fnm_lno(&fnm_buf, fnm, lno)); |
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60 |
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61 if (!line) { |
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62 if (tgt) |
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63 *tgt = '\0'; |
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64 if (fieldname) |
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65 dcc_pemsg(EX_USAGE, emsg, "%s missing%s", |
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66 fieldname, fnm_lno(&fnm_buf, fnm, lno)); |
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67 return 0; |
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68 } |
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69 |
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70 line = line+strspn(line, DCC_WHITESPACE); /* skip leading blanks */ |
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71 |
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72 p = line; |
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73 do { |
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74 c = *p; |
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75 |
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76 if (c != '\0') { |
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77 ++p; |
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78 if (c == '\\' && *p != '\0') { |
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79 /* recognize and convert escape sequences to |
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80 * their real equivalents */ |
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81 if ((c = *p++) == 'n') { |
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82 c = '\n'; |
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83 } else if (c == 'r') { |
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84 c = '\r'; |
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85 } else if (c == 't') { |
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86 c = '\t'; |
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87 } else if (c == 'b') { |
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88 c = '\b'; |
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89 } else if (c >= '0' && c <= '7') { |
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90 c -= '0'; |
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91 if (*p >= '0' && *p <= '7') { |
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92 c = (c<<3)+(*p++ - '0'); |
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93 if (*p >= '0' && *p <= '7') |
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94 c = (c<<3)+(*p++ - '0'); |
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95 } |
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96 } |
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97 } else if (strchr(DCC_WHITESPACE, c)) { |
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98 /* Stop on the first whitespace or delimiter */ |
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99 c = '\0'; |
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100 /* Skip trailing whitespace */ |
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101 p += strspn(p, DCC_WHITESPACE); |
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102 } |
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103 } |
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104 |
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105 if (tgt) { |
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106 if (!tgt_len) { |
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107 if (fieldname) |
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108 dcc_pemsg(EX_USAGE, emsg, |
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109 "%s \"%.*s...\" too long%s", |
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110 fieldname, |
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111 min(16, (int)(p-line)), line, |
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112 fnm_lno(&fnm_buf, fnm, lno)); |
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113 return 0; |
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114 } |
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115 *tgt++ = c; |
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116 --tgt_len; |
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117 } |
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118 } while (c != '\0'); |
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119 |
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120 return p; |
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121 } |
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122 |
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123 |
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124 |
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125 /* get a password */ |
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126 const char * /* 0 or remainder of line */ |
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127 parse_passwd(DCC_EMSG emsg, |
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128 DCC_PASSWD passwd, /* copy password here */ |
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129 const char *line, /* line of words */ |
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130 const char *fieldname, |
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131 const char *fnm, int lno) |
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132 { |
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133 char buf[sizeof(DCC_PASSWD)+1]; |
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134 const char *result; |
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135 |
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136 memset(buf, 0, sizeof(buf)); |
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137 result = dcc_parse_word(emsg, buf, sizeof(buf), |
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138 line, fieldname, fnm, lno); |
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139 if (result) |
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140 memcpy(passwd, buf, sizeof(DCC_PASSWD)); |
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141 else |
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142 memset(passwd, 0, sizeof(DCC_PASSWD)); |
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143 return result; |
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144 } |
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145 |
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146 |
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147 |
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148 /* see if a string starts with a word possibly followed by a comma */ |
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149 u_char /* 1=yes */ |
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150 dcc_ck_word_comma(const char **parg, const char *word) |
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151 { |
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152 u_int word_len = strlen(word); |
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153 const char *arg = *parg; |
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154 |
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155 if (strncasecmp(arg, word, word_len)) |
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156 return 0; |
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157 arg += word_len; |
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158 if (*arg == '\0') { |
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159 *parg = arg; |
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160 return 1; |
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161 } |
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162 if (*arg == ',') { |
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163 *parg = arg+1; |
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164 return 1; |
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165 } |
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166 return 0; |
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167 } |
