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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 1.3.103-1.25 $Revision$ |
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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 char * |
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43 dcc_ck2str(char *buf, u_int buf_len, |
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44 DCC_CK_TYPES type, const DCC_SUM sum, u_int32_t extra) |
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45 { |
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46 u_int32_t n[sizeof(DCC_SUM)+3/4]; |
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47 u_char c; |
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48 char *p; |
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49 const char *type_str; |
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50 char type_buf[32]; |
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51 int i; |
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52 |
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53 /* checksums other than server-ID declarations are easy */ |
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54 if (type != DCC_CK_SRVR_ID) { |
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55 memcpy(n, sum, sizeof(n)); |
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56 snprintf(buf, buf_len, "%08x %08x %08x %08x", |
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57 (int)ntohl(n[0]), (int)ntohl(n[1]), |
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58 (int)ntohl(n[2]), (int)ntohl(n[3])); |
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59 return buf; |
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60 } |
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61 |
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62 /* decode server sanity declarations */ |
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63 if (sum[0] == DCC_CK_SRVR_ID) { |
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64 if (extra == 0) |
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65 type_str = "server"; |
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66 else |
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67 type_str = id2str(type_buf, sizeof(type_buf), extra); |
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68 snprintf(buf, buf_len, "%s at %d", |
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69 type_str, (sum[1]<<8)+sum[2]); |
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70 return buf; |
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71 } |
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72 |
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73 /* decode the string from server-ID declaration */ |
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74 p = buf; |
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75 if (buf_len == 0) |
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76 return buf; |
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77 *p++ = '"'; |
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78 --buf_len; |
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79 for (i = 0; i < ISZ(DCC_SUM); ++i) { |
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80 if (buf_len == 0) |
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81 return buf; |
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82 c = sum[i]; |
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83 if (c == '\0') |
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84 break; |
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85 if (c >= ' ' && c < 0x7f) { |
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86 /* simple ASCII is easy */ |
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87 *p++ = c; |
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88 --buf_len; |
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89 continue; |
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90 } |
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91 |
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92 /* convert non-ASCII to an escape sequence */ |
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93 *p++ = '\\'; |
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94 if (--buf_len == 0) |
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95 return buf; |
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96 *p++ = '0'+(c>>6); |
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97 if (--buf_len == 0) |
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98 return buf; |
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99 *p++ = '0'+((c>>3) & 7); |
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100 if (--buf_len == 0) |
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101 return buf; |
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102 *p++ = '0'+(c & 7); |
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103 --buf_len; |
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104 } |
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105 *p++ = '"'; |
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106 --buf_len; |
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107 if (--buf_len != 0) |
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108 *p = '\0'; |
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109 return buf; |
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110 } |
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111 |
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112 |
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113 |
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114 /* this is not thread safe */ |
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115 const char * |
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116 dcc_ck2str_err(DCC_CK_TYPES type, const DCC_SUM sum, u_int32_t extra) |
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117 { |
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118 static char ck_buf[DCC_CK2STR_LEN]; |
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119 |
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120 return dcc_ck2str(ck_buf, sizeof(ck_buf), type, sum, extra); |
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121 } |
