| 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(NULp) , content(NULp), 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 = NULp; |
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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 = NULp; |
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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 = NULp; |
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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 = NULp; |
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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] = NULp; |
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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 = NULp; |
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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 = NULp; |
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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(NULp)); |
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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 NULp 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 = NULp; |
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| 358 | GB_ERROR error = NULp; |
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| 359 | |
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| 360 | if (strchr(env, ':')) { |
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| 361 | static char *resBuf = NULp; |
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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 = NULp; |
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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 = NULp; |
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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, ':')) { // 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] = NULp; // 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 ? NULp : 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(NULp); |
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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 NULp 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 = NULp; |
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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 = NULp; |
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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(NULp), "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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