1 | /* $Id: network.pc,v 1.6 2001-05-23 21:31:03 zacheiss Exp $ |
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2 | * |
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3 | * This generates the network table. |
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4 | * |
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5 | * Copyright (C) 1994-1998 by the Massachusetts Institute of Technology. |
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6 | * For copying and distribution information, please see the file |
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7 | * <mit-copyright.h>. |
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8 | */ |
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9 | |
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10 | #include <mit-copyright.h> |
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11 | #include <moira.h> |
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12 | |
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13 | #include <sys/stat.h> |
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14 | |
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15 | #include <netinet/in.h> |
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16 | #include <arpa/inet.h> |
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17 | |
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18 | #include <stdio.h> |
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19 | #include <time.h> |
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20 | |
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21 | #include "util.h" |
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22 | |
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23 | EXEC SQL INCLUDE sqlca; |
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24 | |
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25 | RCSID("$Header: /afs/athena.mit.edu/astaff/project/moiradev/repository/moira/gen/network.pc,v 1.6 2001-05-23 21:31:03 zacheiss Exp $"); |
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26 | |
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27 | char *whoami = "network.gen"; |
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28 | char *db = "moira/moira"; |
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29 | |
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30 | char *cidr_from_inaddr(struct in_addr in); |
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31 | |
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32 | int main(int argc, char **argv) |
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33 | { |
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34 | FILE *out = stdout; |
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35 | char *outf = NULL, *cidr = NULL, address[BUFSIZ], outft[MAXPATHLEN]; |
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36 | struct timeval now; |
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37 | struct in_addr addr, maskaddr; |
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38 | EXEC SQL BEGIN DECLARE SECTION; |
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39 | int id, saddr; |
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40 | char name[SUBNET_NAME_SIZE], description[SUBNET_DESCRIPTION_SIZE]; |
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41 | char mask[SUBNET_MASK_SIZE]; |
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42 | EXEC SQL END DECLARE SECTION; |
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43 | |
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44 | EXEC SQL CONNECT :db; |
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45 | |
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46 | if (argc == 2) |
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47 | { |
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48 | outf = argv[1]; |
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49 | sprintf(outft, "%s~", outf); |
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50 | if (!(out = fopen(outft, "w"))) |
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51 | { |
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52 | fprintf(stderr, "unable to open %s for output\n", outf); |
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53 | exit(MR_OCONFIG); |
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54 | } |
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55 | } |
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56 | else if (argc != 1) |
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57 | { |
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58 | fprintf(stderr, "usage: %s [outfile]\n", argv[0]); |
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59 | exit(MR_ARGS); |
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60 | } |
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61 | else |
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62 | outf = NULL; |
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63 | |
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64 | EXEC SQL WHENEVER SQLERROR GOTO sqlerr; |
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65 | |
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66 | gettimeofday(&now, NULL); |
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67 | |
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68 | fprintf(out, "; MIT Network Table\n;\n"); |
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69 | fprintf(out, "; \t%cAuthor: $\n", '$'); |
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70 | fprintf(out, "; \t%cDate: $\n", '$'); |
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71 | fprintf(out, "; \t%cRevision: $\n;\n", '$'); |
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72 | fprintf(out, "; Network table generated by Moira at %s;\n", |
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73 | ctime(&now.tv_sec)); |
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74 | |
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75 | EXEC SQL DECLARE x CURSOR FOR SELECT |
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76 | name, snet_id, saddr, mask, description |
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77 | FROM subnet ORDER BY saddr; |
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78 | EXEC SQL OPEN x; |
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79 | while (1) |
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80 | { |
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81 | EXEC SQL FETCH x INTO :name, :id, :saddr, :mask, :description; |
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82 | if (sqlca.sqlcode) |
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83 | break; |
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84 | if (id == 0) |
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85 | continue; |
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86 | if (!*strtrim(name)) |
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87 | continue; |
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88 | addr.s_addr = htonl(saddr); |
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89 | |
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90 | maskaddr.s_addr = htonl(atoi(mask)); |
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91 | cidr = cidr_from_inaddr(maskaddr); |
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92 | |
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93 | strcpy(address, inet_ntoa(addr)); |
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94 | if (cidr) |
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95 | strcat(address, cidr); |
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96 | |
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97 | fprintf(out, "NETWORK : %-16.16s : %-15.15s : %s\n", name, |
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98 | address, strtrim(description)); |
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99 | } |
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100 | |
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101 | EXEC SQL CLOSE x; |
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102 | |
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103 | EXEC SQL COMMIT; |
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104 | |
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105 | fprintf(out, "; End of automatically generated network table\n"); |
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106 | if (fclose(out)) |
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107 | { |
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108 | perror("close failed"); |
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109 | exit(MR_CCONFIG); |
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110 | } |
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111 | if (outf) |
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112 | fix_file(outf); |
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113 | exit(MR_SUCCESS); |
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114 | |
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115 | sqlerr: |
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116 | db_error(sqlca.sqlcode); |
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117 | exit(MR_DBMS_ERR); |
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118 | } |
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119 | |
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120 | char *cidr_from_inaddr(struct in_addr in) { |
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121 | char *ptr1, *ptr2, *address, *out; |
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122 | int a, b, c, d, addr, i, j = 0, k = 0; |
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123 | int bits[32]; |
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124 | |
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125 | address = inet_ntoa(in); |
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126 | |
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127 | ptr1 = ptr2 = address; |
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128 | ptr2 = (char *)strchr(ptr1, '.'); |
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129 | if (!ptr2) |
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130 | return(NULL); |
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131 | a = atoi(ptr1); |
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132 | |
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133 | ptr1 = ptr2 + 1; |
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134 | ptr2 = (char *)strchr(ptr1, '.'); |
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135 | if (!ptr2) |
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136 | return(NULL); |
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137 | b = atoi(ptr1); |
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138 | |
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139 | ptr1 = ptr2 + 1; |
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140 | ptr2 = (char *)strchr(ptr1, '.'); |
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141 | if (!ptr2) |
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142 | return(NULL); |
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143 | c = atoi(ptr1); |
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144 | |
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145 | ptr1 = ptr2 + 1; |
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146 | d = atoi(ptr1); |
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147 | |
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148 | if (a < 0 || a > 255 || |
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149 | b < 0 || b > 255 || |
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150 | c < 0 || c > 255 || |
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151 | d < 0 || d > 255) |
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152 | return(NULL); |
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153 | |
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154 | addr = d + (c*256) + (b*256*256) + (a*256*256*256); |
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155 | |
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156 | for (i = 0; i < 32; i++) { |
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157 | bits[i] = (addr & 1); |
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158 | addr = (addr >> 1); |
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159 | } |
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160 | |
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161 | while (bits[j] == 0) { |
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162 | j++; |
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163 | if (j > 31) break; |
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164 | } |
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165 | while (bits[j] == 1) { |
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166 | j++; |
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167 | k++; |
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168 | if (j > 31) break; |
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169 | } |
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170 | |
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171 | if (j != 32) |
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172 | return(NULL); |
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173 | |
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174 | out = (char *)malloc(20); |
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175 | if (!out) |
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176 | exit(MR_NO_MEM); |
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177 | sprintf(out, "/%i", k); |
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178 | |
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179 | return(out); |
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180 | } |
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