1 | // =============================================================== // |
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2 | // // |
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3 | // File : adtcp.cxx // |
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4 | // Purpose : arb_tcp.dat handling // |
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5 | // // |
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6 | // Coded by Ralf Westram (coder@reallysoft.de) in April 2007 // |
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7 | // Institute of Microbiology (Technical University Munich) // |
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8 | // http://www.arb-home.de/ // |
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9 | // // |
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10 | // =============================================================== // |
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11 | |
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12 | #include <ctime> |
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13 | #include <sys/stat.h> |
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14 | |
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15 | #include <arbdbt.h> |
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16 | #include <arb_str.h> |
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17 | |
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18 | #include "gb_local.h" |
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19 | |
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20 | #if defined(DEBUG) |
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21 | // #define DUMP_ATD_ACCESS |
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22 | #endif // DEBUG |
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23 | |
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24 | // ------------------------------------------------------------ |
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25 | // Data representing current content of arb_tcp.dat |
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26 | |
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27 | class ArbTcpDat : virtual Noncopyable { |
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28 | GB_ULONG modtime; // modification time of read-in arb_tcp.dat |
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29 | char *filename; // pathname of loaded arb_tcp.dat |
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30 | |
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31 | char **content; /* zero-pointer terminated array of multi-separated strings |
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32 | * (strings have same format as the result of |
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33 | * GBS_read_arb_tcp(), but also contain the first element, |
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34 | * i.e. the server id) |
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35 | */ |
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36 | int serverCount; |
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37 | |
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38 | |
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39 | void freeContent() { |
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40 | if (content) { |
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41 | for (int c = 0; content[c]; c++) free(content[c]); |
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42 | freenull(content); |
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43 | } |
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44 | } |
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45 | GB_ERROR read(int *versionFound); |
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46 | |
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47 | public: |
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48 | ArbTcpDat() : modtime(-1) , filename(NULL) , content(NULL), serverCount(-1) { } |
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49 | |
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50 | ~ArbTcpDat() { |
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51 | free(filename); |
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52 | freeContent(); |
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53 | } |
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54 | |
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55 | GB_ERROR update(); |
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56 | |
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57 | int get_server_count() const { return serverCount; } |
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58 | const char *get_serverID(int idx) const { gb_assert(idx >= 0 && idx<serverCount); return content[idx]; } |
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59 | const char *get_entry(const char *serverID) const; |
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60 | const char *get_filename() const { return filename; } |
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61 | |
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62 | #if defined(DUMP_ATD_ACCESS) |
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63 | void dump(); |
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64 | #endif |
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65 | }; |
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66 | |
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67 | const char *ArbTcpDat::get_entry(const char *serverID) const { |
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68 | const char *result = 0; |
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69 | if (content) { |
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70 | int c; |
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71 | for (c = 0; content[c]; c++) { |
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72 | const char *id = content[c]; |
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73 | |
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74 | if (strcmp(id, serverID) == 0) { |
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75 | result = strchr(id, 0)+1; // return pointer to first parameter |
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76 | break; |
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77 | } |
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78 | } |
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79 | } |
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80 | return result; |
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81 | } |
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82 | |
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83 | #if defined(DUMP_ATD_ACCESS) |
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84 | void ArbTcpDat::dump() { |
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85 | fprintf(stderr, "filename='%s'\n", filename); |
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86 | fprintf(stderr, "modtime='%lu'\n", modtime); |
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87 | if (content) { |
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88 | int c; |
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89 | for (c = 0; content[c]; c++) { |
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90 | char *data = content[c]; |
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91 | char *tok = data; |
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92 | fprintf(stderr, "Entry #%i:\n", c); |
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93 | |
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94 | while (tok[0]) { |
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95 | fprintf(stderr, "- '%s'\n", tok); |
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96 | tok = strchr(tok, 0)+1; |
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97 | } |
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98 | } |
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99 | } |
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100 | else { |
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101 | fprintf(stderr, "No content\n"); |
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102 | } |
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103 | } |
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104 | #endif // DUMP_ATD_ACCESS |
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105 | |
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106 | #define MAXLINELEN 512 |
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107 | #define MAXTOKENS 10 |
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108 | |
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109 | GB_ERROR ArbTcpDat::read(int *versionFound) { |
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110 | // used to read arb_tcp.dat or arb_tcp_org.dat |
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111 | GB_ERROR error = 0; |
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112 | FILE *in = fopen(filename, "rt"); |
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113 | |
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114 | *versionFound = 1; // default to version 1 (old format) |
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115 | |
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116 | #if defined(DUMP_ATD_ACCESS) |
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117 | fprintf(stderr, "(re)reading %s\n", filename); |
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118 | #endif // DUMP_ATD_ACCESS |
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119 | |
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120 | freeContent(); |
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121 | |
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122 | if (!in) { |
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123 | error = GBS_global_string("Can't read '%s'", filename); |
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124 | } |
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125 | else { |
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126 | char buffer[MAXLINELEN+1]; |
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127 | char *lp; |
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128 | int lineNumber = 0; |
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129 | char **tokens = ARB_alloc<char*>(MAXTOKENS); |
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130 | |
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131 | int entries_allocated = 30; |
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132 | int entries = 0; |
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133 | char **entry = ARB_alloc<char*>(entries_allocated); |
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134 | |
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135 | if (!tokens || !entry) error = "Out of memory"; |
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136 | |
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137 | for (lp = fgets(buffer, MAXLINELEN, in); |
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138 | lp && !error; |
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139 | lp = fgets(buffer, MAXLINELEN, in)) |
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140 | { |
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141 | char *tok; |
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142 | int tokCount = 0; |
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143 | int t; |
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144 | |
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145 | lineNumber++; |
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146 | |
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147 | while ((tok = strtok(lp, " \t\n"))) { |
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148 | if (tok[0] == '#') break; // EOL comment -> stop |
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149 | if (tokCount >= MAXTOKENS) { error = "Too many tokens"; break; } |
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150 | tokens[tokCount] = tokCount ? GBS_eval_env(tok) : ARB_strdup(tok); |
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151 | if (!tokens[tokCount]) { error = GB_await_error(); break; } |
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152 | tokCount++; |
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153 | lp = 0; |
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154 | } |
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155 | |
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156 | if (!error && tokCount>0) { |
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157 | if (strcmp(tokens[0], "ARB_TCP_DAT_VERSION") == 0) { |
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158 | if (tokCount>1) *versionFound = atoi(tokens[1]); |
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159 | } |
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160 | else { |
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161 | char *data; |
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162 | { |
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163 | int allsize = 0; |
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164 | int size[MAXTOKENS]; |
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165 | |
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166 | for (t = 0; t<tokCount; t++) { |
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167 | size[t] = strlen(tokens[t])+1; |
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168 | allsize += size[t]; |
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169 | } |
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170 | allsize++; // additional zero byte |
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171 | |
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172 | data = ARB_alloc<char>(allsize); |
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173 | { |
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174 | char *d = data; |
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175 | for (t = 0; t<tokCount; t++) { |
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176 | memmove(d, tokens[t], size[t]); |
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177 | d += size[t]; |
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178 | } |
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179 | d[0] = 0; |
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180 | } |
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181 | } |
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182 | |
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183 | if (entries == entries_allocated) { |
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184 | entries_allocated = (int)(entries_allocated*1.5); |
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185 | ARB_realloc(entry, entries_allocated); |
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186 | } |
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187 | if (!error) { |
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188 | entry[entries++] = data; |
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189 | data = 0; |
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190 | } |
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191 | free(data); |
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192 | } |
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193 | } |
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194 | |
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195 | if (error) error = GBS_global_string("%s (in line %i of '%s')", error, lineNumber, filename); |
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196 | for (t = 0; t<tokCount; t++) freenull(tokens[t]); |
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197 | } |
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198 | |
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199 | ARB_realloc(entry, entries+1); |
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200 | |
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201 | content = entry; |
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202 | content[entries] = 0; |
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203 | serverCount = entries; |
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204 | |
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205 | free(tokens); |
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206 | fclose(in); |
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207 | } |
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208 | |
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209 | #if defined(DUMP_ATD_ACCESS) |
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210 | dump(); |
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211 | #endif // DUMP_ATD_ACCESS |
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212 | return error; |
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213 | } |
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214 | |
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215 | char *GB_arbtcpdat_path() { |
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216 | return GB_lib_file(true, "", "arb_tcp.dat"); |
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217 | } |
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218 | |
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219 | GB_ERROR ArbTcpDat::update() { |
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220 | // read arb_tcp.dat (once or if changed on disk) |
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221 | GB_ERROR error = 0; |
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222 | |
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223 | if (!filename) filename = GB_arbtcpdat_path(); |
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224 | |
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225 | if (!filename) { |
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226 | error = "File $ARBHOME/lib/arb_tcp.dat missing or unreadable"; |
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227 | } |
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228 | else { |
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229 | struct stat st; |
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230 | if (stat(filename, &st) == 0) { |
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231 | GB_ULONG mtime = st.st_mtime; |
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232 | if (modtime != mtime) { // read once or when changed |
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233 | int arb_tcp_version; |
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234 | error = read(&arb_tcp_version); |
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235 | |
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236 | if (!error) { |
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237 | int expected_version = 2; |
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238 | if (arb_tcp_version != expected_version) { |
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239 | error = GBS_global_string("Expected arb_tcp.dat version %i\n" |
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240 | "Your '%s' has version %i\n" |
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241 | "To solve the problem\n" |
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242 | "- either reinstall ARB and do not select\n" |
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243 | " 'Use information of already installed ARB'\n" |
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244 | " (any changes to arb_tcp.dat will be lost)\n" |
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245 | "- or backup your changed %s,\n" |
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246 | " replace it by the contents from $ARBHOME/lib/arb_tcp_org.dat\n" |
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247 | " and edit it to fit your needs.", |
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248 | expected_version, |
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249 | filename, arb_tcp_version, |
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250 | filename); |
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251 | } |
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252 | } |
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253 | modtime = error ? -1 : mtime; |
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254 | } |
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255 | } |
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256 | else { |
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257 | error = GBS_global_string("Can't stat '%s'", filename); |
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258 | } |
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259 | } |
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260 | |
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261 | if (error) { |
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262 | freenull(filename); |
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263 | #if defined(DUMP_ATD_ACCESS) |
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264 | fprintf(stderr, "error=%s\n", error); |
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265 | #endif // DUMP_ATD_ACCESS |
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266 | } |
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267 | |
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268 | return error; |
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269 | } |
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270 | |
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271 | static ArbTcpDat arb_tcp_dat; |
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272 | |
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273 | // -------------------------------------------------------------------------------- |
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274 | |
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275 | const char *GBS_scan_arb_tcp_param(const char *ipPort, const char *wantedParam) { |
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276 | /* search a specific server parameter in result from GBS_read_arb_tcp() |
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277 | * wantedParam may be sth like '-d' (case is ignored!) |
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278 | */ |
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279 | const char *result = 0; |
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280 | if (ipPort) { |
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281 | const char *exe = strchr(ipPort, 0)+1; |
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282 | const char *param = strchr(exe, 0)+1; |
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283 | size_t plen = strlen(param); |
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284 | size_t wplen = strlen(wantedParam); |
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285 | |
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286 | while (plen) { |
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287 | if (strncasecmp(param, wantedParam, wplen) == 0) { // starts with wantedParam |
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288 | result = param+wplen; |
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289 | break; |
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290 | } |
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291 | param += plen+1; // position behind 0-delimiter |
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292 | plen = strlen(param); |
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293 | } |
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294 | } |
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295 | return result; |
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296 | } |
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297 | |
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298 | // AISC_MKPT_PROMOTE:#ifdef UNIT_TESTS // UT_DIFF |
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299 | // AISC_MKPT_PROMOTE:#define TEST_SERVER_ID (-666) |
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300 | // AISC_MKPT_PROMOTE:#define TEST_GENESERVER_ID (-667) |
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301 | // AISC_MKPT_PROMOTE:#endif |
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302 | |
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303 | const char *GBS_nameserver_tag(const char *add_field) { |
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304 | if (add_field && add_field[0]) { |
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305 | char *tag = GBS_global_string_copy("ARB_NAME_SERVER_%s", add_field); |
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306 | ARB_strupper(tag); |
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307 | RETURN_LOCAL_ALLOC(tag); |
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308 | } |
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309 | return "ARB_NAME_SERVER"; |
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310 | } |
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311 | |
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312 | const char *GBS_ptserver_tag(int id) { |
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313 | #ifdef UNIT_TESTS // UT_DIFF |
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314 | if (id == TEST_SERVER_ID) return "ARB_TEST_PT_SERVER"; |
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315 | if (id == TEST_GENESERVER_ID) return "ARB_TEST_PT_SERVER_GENE"; |
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316 | #endif // UNIT_TESTS |
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317 | gb_assert(id >= 0); |
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318 | const int MAXIDSIZE = 30; |
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319 | static char server_tag[MAXIDSIZE]; |
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320 | // ASSERT_RESULT_BELOW(int, sprintf(server_tag, "ARB_PT_SERVER%i", id), MAXIDSIZE); |
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321 | ASSERT_RESULT_PREDICATE(isBelow<int>(MAXIDSIZE), sprintf(server_tag, "ARB_PT_SERVER%i", id)); |
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322 | return server_tag; |
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323 | } |
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324 | |
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325 | const char *GBS_read_arb_tcp(const char *env) { |
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326 | /*! Find an entry in the $ARBHOME/lib/arb_tcp.dat file |
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327 | * |
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328 | * Be aware: GBS_read_arb_tcp returns a quite unusual string containing several string delimiters (0-characters). |
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329 | * It contains all words (separated by space or tab in arb_tcp.dat) of the corresponding line in arb_tcp.dat. |
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330 | * These words get concatenated (separated by 0 characters). |
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331 | * |
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332 | * The first word (which matches the parameter env) is skipped. |
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333 | * The second word (the socket info = "host:port") is returned directly as result. |
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334 | * The third word is the server executable name. |
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335 | * The fourth and following words are parameters to the executable. |
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336 | * |
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337 | * To access these words follow this example: |
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338 | * |
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339 | * const char *ipPort = GBS_read_arb_tcp(GBS_nameserver_tag(NULL)); |
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340 | * if (ipPort) { |
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341 | * const char *serverExe = strchr(ipPort, 0)+1; |
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342 | * const char *para1 = strchr(serverExe, 0)+1; // always exists! |
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343 | * const char *para2 = strchr(para1, 0)+1; |
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344 | * if (para2[0]) { |
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345 | * // para2 exists |
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346 | * } |
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347 | * } |
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348 | * else { |
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349 | * // handle error! |
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350 | * } |
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351 | * |
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352 | * see also GBS_read_arb_tcp_param() above |
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353 | * |
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354 | * Returns NULL on error (which is exported in that case) |
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355 | */ |
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356 | |
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357 | const char *result = 0; |
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358 | GB_ERROR error = 0; |
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359 | |
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360 | if (strchr(env, ':')) { |
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361 | static char *resBuf = 0; |
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362 | freedup(resBuf, env); |
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363 | result = resBuf; |
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364 | } |
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365 | else { |
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366 | error = arb_tcp_dat.update(); // load once or reload after change on disk |
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367 | if (!error) { |
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368 | const char *user = GB_getenvUSER(); |
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369 | if (!user) { |
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370 | error = "Environment variable 'USER' not defined"; |
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371 | } |
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372 | else { |
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373 | char *envuser = GBS_global_string_copy("%s:%s", user, env); |
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374 | result = arb_tcp_dat.get_entry(envuser); |
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375 | |
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376 | if (!result) { // no user-specific entry found |
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377 | result = arb_tcp_dat.get_entry(env); |
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378 | if (!result) { |
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379 | error = GBS_global_string("No such entry '%s' (or '%s') in '%s'", |
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380 | env, envuser, arb_tcp_dat.get_filename()); |
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381 | } |
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382 | } |
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383 | free(envuser); |
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384 | } |
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385 | } |
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386 | } |
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387 | |
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388 | gb_assert(result||error); |
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389 | if (error) { |
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390 | GB_export_error(error); |
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391 | result = 0; |
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392 | } |
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393 | return result; |
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394 | } |
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395 | |
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396 | const char * const *GBS_get_arb_tcp_entries(const char *matching) { |
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397 | /*! returns a list of all matching non-user-specific entries found in arb_tcp.dat |
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398 | * match is performed by GBS_string_matches (e.g. use "ARB_PT_SERVER*") |
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399 | */ |
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400 | static const char **matchingEntries = 0; |
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401 | static int matchingEntriesSize = 0; |
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402 | |
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403 | GB_ERROR error = arb_tcp_dat.update(); |
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404 | if (!error) { |
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405 | int count = arb_tcp_dat.get_server_count(); |
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406 | |
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407 | if (matchingEntriesSize != count) { |
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408 | freeset(matchingEntries, ARB_alloc<const char*>(count+1)); |
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409 | matchingEntriesSize = count; |
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410 | } |
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411 | |
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412 | int matched = 0; |
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413 | for (int c = 0; c<count; c++) { |
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414 | const char *id = arb_tcp_dat.get_serverID(c); |
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415 | |
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416 | if (strchr(id, ':') == 0) { // not user-specific |
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417 | if (GBS_string_matches(id, matching, GB_MIND_CASE)) { // matches |
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418 | matchingEntries[matched++] = id; |
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419 | } |
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420 | } |
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421 | } |
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422 | matchingEntries[matched] = 0; // end of array |
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423 | } |
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424 | if (error) GB_export_error(error); |
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425 | return error ? 0 : matchingEntries; |
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426 | } |
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427 | |
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428 | // --------------------------- |
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429 | // pt server related |
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430 | |
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431 | const char *GBS_ptserver_logname() { |
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432 | RETURN_ONETIME_ALLOC(nulldup(GB_path_in_ARBLIB("pts/ptserver.log"))); |
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433 | } |
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434 | |
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435 | void GBS_add_ptserver_logentry(const char *entry) { |
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436 | FILE *log = fopen(GBS_ptserver_logname(), "at"); |
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437 | if (log) { |
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438 | chmod(GBS_ptserver_logname(), 0666); |
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439 | |
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440 | char atime[256]; |
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441 | time_t t = time(0); |
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442 | tm *tms = localtime(&t); |
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443 | |
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444 | strftime(atime, 255, "%Y/%m/%d %k:%M:%S", tms); |
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445 | fprintf(log, "%s %s\n", atime, entry); |
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446 | fclose(log); |
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447 | } |
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448 | else { |
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449 | fprintf(stderr, "Failed to write to '%s'\n", GBS_ptserver_logname()); |
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450 | } |
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451 | } |
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452 | |
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453 | char *GBS_ptserver_id_to_choice(int i, int showBuild) { |
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454 | /* Return a readable name for PTserver number 'i' |
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455 | * If 'showBuild' then show build info as well. |
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456 | * |
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457 | * Return NULL in case of error (which was exported then) |
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458 | */ |
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459 | const char *ipPort = GBS_read_arb_tcp(GBS_ptserver_tag(i)); |
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460 | char *result = 0; |
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461 | |
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462 | if (ipPort) { |
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463 | const char *file = GBS_scan_arb_tcp_param(ipPort, "-d"); |
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464 | const char *nameOnly = strrchr(file, '/'); |
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465 | |
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466 | if (nameOnly) nameOnly++; // position behind '/' |
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467 | else nameOnly = file; // otherwise show complete file |
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468 | |
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469 | { |
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470 | char *remote = ARB_strdup(ipPort); |
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471 | char *colon = strchr(remote, ':'); |
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472 | if (colon) *colon = 0; // hide port |
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473 | |
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474 | if (strcmp(remote, "localhost") == 0) { // hide localhost |
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475 | result = nulldup(nameOnly); |
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476 | } |
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477 | else { |
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478 | result = GBS_global_string_copy("%s: %s", remote, nameOnly); |
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479 | } |
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480 | free(remote); |
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481 | } |
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482 | |
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483 | |
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484 | if (showBuild) { |
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485 | struct stat st; |
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486 | |
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487 | if (stat(file, &st) == 0) { // xxx.arb present |
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488 | time_t fileMod = st.st_mtime; |
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489 | char *serverDB = GBS_global_string_copy("%s.pt", file); |
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490 | char *newResult = 0; |
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491 | |
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492 | if (stat(serverDB, &st) == 0) { // pt-database present |
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493 | if (st.st_mtime < fileMod) { // DB is newer than pt-database |
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494 | newResult = GBS_global_string_copy("%s [starting or failed update]", result); |
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495 | } |
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496 | else { |
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497 | char atime[256]; |
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498 | tm *tms = localtime(&st.st_mtime); |
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499 | |
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500 | strftime(atime, 255, "%Y/%m/%d %k:%M", tms); |
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501 | newResult = GBS_global_string_copy("%s [%s]", result, atime); |
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502 | } |
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503 | } |
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504 | else { // check for running build |
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505 | char *serverDB_duringBuild = GBS_global_string_copy("%s%%", serverDB); |
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506 | if (stat(serverDB_duringBuild, &st) == 0) { |
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507 | newResult = GBS_global_string_copy("%s [building..]", result); |
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508 | } |
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509 | free(serverDB_duringBuild); |
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510 | } |
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511 | |
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512 | if (newResult) freeset(result, newResult); |
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513 | free(serverDB); |
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514 | } |
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515 | } |
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516 | } |
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517 | |
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518 | return result; |
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519 | } |
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520 | |
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521 | // -------------------------------------------------------------------------------- |
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522 | |
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523 | #ifdef UNIT_TESTS |
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524 | |
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525 | #include <test_unit.h> |
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526 | |
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527 | void TEST_GBS_servertags() { |
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528 | TEST_EXPECT_EQUAL(GBS_ptserver_tag(0), "ARB_PT_SERVER0"); |
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529 | TEST_EXPECT_EQUAL(GBS_ptserver_tag(7), "ARB_PT_SERVER7"); |
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530 | |
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531 | TEST_EXPECT_EQUAL(GBS_nameserver_tag(NULL), "ARB_NAME_SERVER"); |
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532 | TEST_EXPECT_EQUAL(GBS_nameserver_tag(""), "ARB_NAME_SERVER"); |
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533 | TEST_EXPECT_EQUAL(GBS_nameserver_tag("test"), "ARB_NAME_SERVER_TEST"); |
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534 | } |
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535 | |
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536 | #endif // UNIT_TESTS |
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