Mercurial > sm-archive
annotate src/context.cpp @ 23:37793d4c90a0
changes for rhel7 systemd and /var/run on tmpfs
| author | Carl Byington <carl@five-ten-sg.com> |
|---|---|
| date | Mon, 06 Feb 2017 10:45:07 -0800 |
| parents | 09564d4acd9e |
| children |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 2 | |
| 13 | 3 Copyright (c) 2007 Carl Byington - 510 Software Group, released under |
| 4 the GPL version 3 or any later version at your choice available at | |
| 5 http://www.gnu.org/licenses/gpl-3.0.txt | |
| 0 | 6 |
| 7 */ | |
| 8 | |
| 9 #include "includes.h" | |
| 10 | |
|
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11 const char *token_envfrom; |
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12 const char *token_include; |
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13 const char *token_lbrace; |
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14 const char *token_rbrace; |
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15 const char *token_rcptto; |
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16 const char *token_remove; |
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17 const char *token_semi; |
| 0 | 18 |
| 19 string_set all_strings; // owns all the strings, only modified by the config loader thread | |
| 20 const int maxlen = 1000; // used for snprintf buffers | |
| 21 | |
| 22 CONFIG::CONFIG() { | |
| 23 reference_count = 0; | |
| 24 generation = 0; | |
| 25 load_time = 0; | |
| 26 } | |
| 27 | |
| 28 | |
| 29 CONFIG::~CONFIG() { | |
| 30 } | |
| 31 | |
| 32 | |
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33 bool CONFIG::find(const char *needle, string_set &haystack) { |
| 13 | 34 string_set::iterator i = haystack.find(needle); |
| 35 if (i != haystack.end()) return true; // found user@domain.tld key | |
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36 const char *x = strchr(needle, '@'); |
| 0 | 37 if (x) { |
| 38 x++; | |
| 39 i = haystack.find(x); | |
| 13 | 40 if (i != haystack.end()) return true; // found domain.tld key |
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41 string userpart(needle, x-needle); |
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42 i = haystack.find(userpart.c_str()); |
| 13 | 43 if (i != haystack.end()) return true; // found user@ key |
| 44 } | |
| 45 return false; | |
| 46 } | |
| 47 | |
| 48 | |
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49 const char *CONFIG::find(const char *needle, string_map &haystack) { |
| 13 | 50 string_map::iterator i = haystack.find(needle); |
| 51 if (i != haystack.end()) return (*i).second; // found user@domain.tld key | |
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52 const char *x = strchr(needle, '@'); |
| 13 | 53 if (x) { |
| 54 x++; | |
| 55 i = haystack.find(x); | |
| 56 if (i != haystack.end()) return (*i).second; // found domain.tld key | |
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57 string userpart(needle, x-needle); |
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58 i = haystack.find(userpart.c_str()); |
| 13 | 59 if (i != haystack.end()) return (*i).second; // found user@ key |
| 0 | 60 } |
| 61 return NULL; | |
| 62 } | |
| 63 | |
| 64 | |
| 65 void CONFIG::dump() { | |
| 66 printf("rcpt_to {\n"); | |
| 67 for (string_map::iterator i=rcpt_to.begin(); i!=rcpt_to.end(); i++) { | |
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68 const char *to = (*i).first; |
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69 const char *target = (*i).second; |
| 13 | 70 if (!target) target = "\"\""; |
| 71 bool rem = find_remove(to); | |
| 72 printf(" %s \t %s%s;\n", to, target, (rem) ? " remove" : ""); | |
| 0 | 73 } |
| 74 printf("};\n"); | |
| 75 printf("env_from {\n"); | |
| 76 for (string_map::iterator i=env_from.begin(); i!=env_from.end(); i++) { | |
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77 const char *from = (*i).first; |
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78 const char *target = (*i).second; |
| 13 | 79 if (!target) target = "\"\""; |
| 80 printf(" %s \t %s;\n", from, target); | |
| 0 | 81 } |
| 82 printf("};\n"); | |
| 83 } | |
| 84 | |
| 85 | |
| 86 //////////////////////////////////////////////// | |
| 87 // helper to discard the strings held by a string_set | |
| 88 // | |
| 89 void discard(string_set &s) { | |
| 90 for (string_set::iterator i=s.begin(); i!=s.end(); i++) { | |
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91 free((void*)*i); |
| 0 | 92 } |
| 93 s.clear(); | |
| 94 } | |
| 95 | |
| 96 | |
| 97 //////////////////////////////////////////////// | |
| 98 // helper to register a string in a string set | |
| 99 // | |
|
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100 const char* register_string(string_set &s, const char *name) { |
| 0 | 101 string_set::iterator i = s.find(name); |
| 102 if (i != s.end()) return *i; | |
| 103 char *x = strdup(name); | |
| 104 s.insert(x); | |
| 105 return x; | |
| 106 } | |
| 107 | |
| 108 | |
| 109 //////////////////////////////////////////////// | |
| 110 // register a global string | |
| 111 // | |
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parents:
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112 const char* register_string(const char *name) { |
| 0 | 113 return register_string(all_strings, name); |
| 114 } | |
| 115 | |
| 116 | |
| 117 //////////////////////////////////////////////// | |
| 13 | 118 // clear all global strings, helper for valgrind checking |
| 119 // | |
| 120 void clear_strings() { | |
| 121 discard(all_strings); | |
| 122 } | |
| 123 | |
| 124 | |
| 125 //////////////////////////////////////////////// | |
| 0 | 126 // |
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b24369330483
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127 bool tsa(TOKEN &tok, const char *token); |
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b24369330483
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Carl Byington <carl@five-ten-sg.com>
parents:
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128 bool tsa(TOKEN &tok, const char *token) { |
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b24369330483
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Carl Byington <carl@five-ten-sg.com>
parents:
17
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129 const char *have = tok.next(); |
| 0 | 130 if (have == token) return true; |
| 131 tok.token_error(token, have); | |
| 132 return false; | |
| 133 } | |
| 134 | |
| 135 | |
| 136 //////////////////////////////////////////////// | |
| 137 // | |
| 138 bool parse_rcpt_to(TOKEN &tok, CONFIG &dc); | |
| 139 bool parse_rcpt_to(TOKEN &tok, CONFIG &dc) { | |
| 140 if (!tsa(tok, token_lbrace)) return false; | |
| 141 while (true) { | |
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parents:
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142 const char *have = tok.next(); |
| 0 | 143 if (!have) break; |
| 144 if (have == token_rbrace) break; | |
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b24369330483
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Carl Byington <carl@five-ten-sg.com>
parents:
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145 const char *target = tok.next(); |
| 13 | 146 dc.add_to(have, target); |
| 147 target = tok.next(); | |
| 148 if (target == token_remove) { | |
| 149 dc.add_remove(have); | |
| 150 target = tok.next(); | |
| 0 | 151 } |
| 13 | 152 if (target != token_semi) { |
| 153 tok.token_error(token_semi, target); | |
| 154 break; | |
| 0 | 155 } |
| 156 } | |
| 157 return tsa(tok, token_semi); | |
| 158 } | |
| 159 | |
| 160 | |
| 161 //////////////////////////////////////////////// | |
| 162 // | |
| 163 bool parse_env_from(TOKEN &tok, CONFIG &dc); | |
| 164 bool parse_env_from(TOKEN &tok, CONFIG &dc) { | |
| 165 if (!tsa(tok, token_lbrace)) return false; | |
| 166 while (true) { | |
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parents:
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167 const char *have = tok.next(); |
| 0 | 168 if (!have) break; |
| 169 if (have == token_rbrace) break; | |
| 170 if (have == token_semi) { | |
| 171 // optional separators | |
| 172 } | |
| 173 else { | |
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174 const char *target = tok.next(); |
| 0 | 175 dc.add_from(have, target); |
| 176 } | |
| 177 } | |
| 178 return tsa(tok, token_semi); | |
| 179 } | |
| 180 | |
| 181 | |
| 182 //////////////////////////////////////////////// | |
| 183 // parse a config file | |
| 184 // | |
|
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185 bool load_conf(CONFIG &dc, const char *fn) { |
| 0 | 186 TOKEN tok(fn, &dc.config_files); |
| 187 while (true) { | |
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parents:
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188 const char *have = tok.next(); |
| 0 | 189 if (!have) break; |
| 190 if (have == token_envfrom) { | |
| 191 if (!parse_env_from(tok, dc)) { | |
| 192 tok.token_error("load_conf() failed to parse env_from"); | |
| 193 return false; | |
| 194 } | |
| 195 } | |
| 196 else if (have == token_rcptto) { | |
| 197 if (!parse_rcpt_to(tok, dc)) { | |
| 198 tok.token_error("load_conf() failed to parse rcpt_to"); | |
| 199 return false; | |
| 200 } | |
| 201 } | |
| 202 else { | |
| 3 | 203 tok.token_error("env_from/rcpt_to", have); |
| 0 | 204 return false; |
| 205 } | |
| 206 } | |
| 207 return true; | |
| 208 } | |
| 209 | |
| 210 | |
| 211 //////////////////////////////////////////////// | |
| 212 // init the tokens | |
| 213 // | |
| 214 void token_init() { | |
| 215 token_envfrom = register_string("env_from"); | |
| 3 | 216 token_include = register_string("include"); |
| 0 | 217 token_lbrace = register_string("{"); |
| 218 token_rbrace = register_string("}"); | |
| 219 token_rcptto = register_string("rcpt_to"); | |
| 13 | 220 token_remove = register_string("remove"); |
| 0 | 221 token_semi = register_string(";"); |
| 222 } |