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cfg.cpp
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cfg.cpp
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#line 1 "cfg.rl"
// Copyright 2015-2022 Nicholas J. Kain <njkain at gmail dot com>
// SPDX-License-Identifier: MIT
#include "fcactus.hpp"
#include <cstring>
#include <climits>
#include <cassert>
#include <nk/string_replace_all.hpp>
#include <nk/from_string.hpp>
#include <nk/scopeguard.hpp>
extern "C" {
#include "nk/privs.h"
}
#define MAX_LINE 2048
struct ParseCfgState {
ParseCfgState(inotify &inot) : wm(nullptr), inw(inot),
intv_st(nullptr), intv2_st(nullptr), strv_st(nullptr),
v_strlen(0), linenum(0), v_int(0), v_int2(0), cs(0), cmdret(0),
intv2_exist(false)
{
create_job();
memset(v_str, 0, sizeof v_str);
}
char v_str[1024];
std::unique_ptr<watch_meta> wm;
inotify &inw;
const char *intv_st;
const char *intv2_st;
const char *strv_st;
size_t v_strlen;
size_t linenum;
int v_int;
int v_int2;
int cs;
int cmdret;
bool intv2_exist;
void create_job()
{
assert(!wm);
wm = std::make_unique<watch_meta>();
cmdret = 0;
}
void finish_job()
{
if (!wm)
return;
if (!wm->valid()) {
log_line("ignoring invalid job at line %zu", linenum);
wm.reset();
return;
}
inw.add(std::move(wm));
wm.reset();
}
void setgroupv()
{
if (nk_gidbyname(v_str, &wm->group_)) {
log_line("%s: nonexistent group specified at line %zu", __func__, linenum);
std::exit(EXIT_FAILURE);
}
}
void setuserv()
{
if (nk_uidgidbyname(v_str, &wm->user_, &wm->group_)) {
log_line("%s: nonexistent user specified at line %zu", __func__, linenum);
std::exit(EXIT_FAILURE);
}
}
void setlim(int type)
{
struct rlimit rli;
rli.rlim_cur = v_int == 0 ? RLIM_INFINITY : v_int;
rli.rlim_max = v_int2 == 0 ? RLIM_INFINITY : v_int2;
wm->limits_.add(type, rli);
}
};
struct pckm {
pckm() : st(nullptr), cs(0) {}
char *st;
int cs;
};
#line 116 "cfg.rl"
#line 106 "cfg.cpp"
static const int parse_cmd_key_m_start = 1;
static const int parse_cmd_key_m_first_final = 2;
static const int parse_cmd_key_m_error = 0;
static const int parse_cmd_key_m_en_main = 1;
#line 118 "cfg.rl"
// cmdret = 0: Not parsed a command key yet.
// cmdret = 1: Success. Got a command key.
// cmdret = -1: Error: malformed command key.
// cmdret = -2: Error: incomplete command key.
// cmdret = -3: Error: duplicate command key.
static void parse_command_key(ParseCfgState &fas)
{
char *p = fas.v_str;
const char *pe = fas.v_str + fas.v_strlen;
const char *eof = pe;
struct pckm pckm;
if (fas.cmdret != 0) {
fas.cmdret = -3;
log_line("Duplicate 'command' value at line %zu", fas.linenum);
std::exit(EXIT_FAILURE);
}
#line 137 "cfg.cpp"
{
pckm.cs = (int)parse_cmd_key_m_start;
}
#line 139 "cfg.rl"
#line 145 "cfg.cpp"
{
switch ( pckm.cs ) {
case 1:
goto st_case_1;
case 2:
goto st_case_2;
case 0:
goto st_case_0;
case 3:
goto st_case_3;
case 4:
goto st_case_4;
case 5:
goto st_case_5;
case 6:
goto st_case_6;
case 7:
goto st_case_7;
case 8:
goto st_case_8;
}
_st1:
if ( p == eof )
goto _out1;
p+= 1;
st_case_1:
if ( p == pe && p != eof )
goto _out1;
if ( p == eof ) {
goto _st1;}
else {
switch( ( (*( p))) ) {
case 0: {
goto _st0;
}
case 9: {
goto _st1;
}
case 32: {
goto _st1;
}
case 92: {
goto _ctr3;
}
}
goto _ctr2;
}
_ctr2:
{
#line 103 "cfg.rl"
pckm.st = p; }
#line 198 "cfg.cpp"
goto _st2;
_ctr4:
{
#line 104 "cfg.rl"
fas.wm->cmd_ = std::string(pckm.st, p - pckm.st);
string_replace_all(fas.wm->cmd_, "\\ ", 2, " ");
string_replace_all(fas.wm->cmd_, "\\\\", 2, "\\");
}
#line 210 "cfg.cpp"
goto _st2;
_st2:
if ( p == eof )
goto _out2;
p+= 1;
st_case_2:
if ( p == pe && p != eof )
goto _out2;
if ( p == eof ) {
goto _ctr4;}
else {
switch( ( (*( p))) ) {
case 0: {
goto _st0;
}
case 9: {
goto _ctr6;
}
case 32: {
goto _ctr6;
}
case 92: {
goto _st5;
}
}
goto _st2;
}
_st0:
if ( p == eof )
goto _out0;
st_case_0:
goto _out0;
_ctr10:
{
#line 103 "cfg.rl"
pckm.st = p; }
#line 249 "cfg.cpp"
goto _st3;
_ctr6:
{
#line 104 "cfg.rl"
fas.wm->cmd_ = std::string(pckm.st, p - pckm.st);
string_replace_all(fas.wm->cmd_, "\\ ", 2, " ");
string_replace_all(fas.wm->cmd_, "\\\\", 2, "\\");
}
#line 261 "cfg.cpp"
goto _st3;
_ctr8:
{
#line 103 "cfg.rl"
pckm.st = p; }
#line 269 "cfg.cpp"
{
#line 109 "cfg.rl"
fas.wm->args_ = std::string(pckm.st, p - pckm.st); }
#line 275 "cfg.cpp"
goto _st3;
_ctr17:
{
#line 104 "cfg.rl"
fas.wm->cmd_ = std::string(pckm.st, p - pckm.st);
string_replace_all(fas.wm->cmd_, "\\ ", 2, " ");
string_replace_all(fas.wm->cmd_, "\\\\", 2, "\\");
}
#line 287 "cfg.cpp"
{
#line 103 "cfg.rl"
pckm.st = p; }
#line 293 "cfg.cpp"
goto _st3;
_st3:
if ( p == eof )
goto _out3;
p+= 1;
st_case_3:
if ( p == pe && p != eof )
goto _out3;
if ( p == eof ) {
goto _ctr8;}
else {
switch( ( (*( p))) ) {
case 0: {
goto _st0;
}
case 9: {
goto _ctr10;
}
case 32: {
goto _ctr10;
}
}
goto _ctr9;
}
_ctr9:
{
#line 103 "cfg.rl"
pckm.st = p; }
#line 324 "cfg.cpp"
goto _st4;
_ctr11:
{
#line 109 "cfg.rl"
fas.wm->args_ = std::string(pckm.st, p - pckm.st); }
#line 332 "cfg.cpp"
goto _st4;
_st4:
if ( p == eof )
goto _out4;
p+= 1;
st_case_4:
if ( p == pe && p != eof )
goto _out4;
if ( p == eof ) {
goto _ctr11;}
else {
if ( ( (*( p))) == 0 ) {
goto _st0;
}
goto _st4;
}
_ctr3:
{
#line 103 "cfg.rl"
pckm.st = p; }
#line 355 "cfg.cpp"
goto _st5;
_ctr13:
{
#line 104 "cfg.rl"
fas.wm->cmd_ = std::string(pckm.st, p - pckm.st);
string_replace_all(fas.wm->cmd_, "\\ ", 2, " ");
string_replace_all(fas.wm->cmd_, "\\\\", 2, "\\");
}
#line 367 "cfg.cpp"
goto _st5;
_st5:
if ( p == eof )
goto _out5;
p+= 1;
st_case_5:
if ( p == pe && p != eof )
goto _out5;
if ( p == eof ) {
goto _ctr13;}
else {
switch( ( (*( p))) ) {
case 0: {
goto _st0;
}
case 9: {
goto _ctr6;
}
case 32: {
goto _ctr14;
}
case 92: {
goto _st5;
}
}
goto _st2;
}
_ctr14:
{
#line 104 "cfg.rl"
fas.wm->cmd_ = std::string(pckm.st, p - pckm.st);
string_replace_all(fas.wm->cmd_, "\\ ", 2, " ");
string_replace_all(fas.wm->cmd_, "\\\\", 2, "\\");
}
#line 405 "cfg.cpp"
goto _st6;
_ctr15:
{
#line 104 "cfg.rl"
fas.wm->cmd_ = std::string(pckm.st, p - pckm.st);
string_replace_all(fas.wm->cmd_, "\\ ", 2, " ");
string_replace_all(fas.wm->cmd_, "\\\\", 2, "\\");
}
#line 417 "cfg.cpp"
{
#line 103 "cfg.rl"
pckm.st = p; }
#line 423 "cfg.cpp"
{
#line 109 "cfg.rl"
fas.wm->args_ = std::string(pckm.st, p - pckm.st); }
#line 429 "cfg.cpp"
goto _st6;
_st6:
if ( p == eof )
goto _out6;
p+= 1;
st_case_6:
if ( p == pe && p != eof )
goto _out6;
if ( p == eof ) {
goto _ctr15;}
else {
switch( ( (*( p))) ) {
case 0: {
goto _st0;
}
case 9: {
goto _ctr17;
}
case 32: {
goto _ctr17;
}
case 92: {
goto _ctr18;
}
}
goto _ctr16;
}
_ctr16:
{
#line 103 "cfg.rl"
pckm.st = p; }
#line 463 "cfg.cpp"
goto _st7;
_ctr19:
{
#line 104 "cfg.rl"
fas.wm->cmd_ = std::string(pckm.st, p - pckm.st);
string_replace_all(fas.wm->cmd_, "\\ ", 2, " ");
string_replace_all(fas.wm->cmd_, "\\\\", 2, "\\");
}
#line 475 "cfg.cpp"
{
#line 109 "cfg.rl"
fas.wm->args_ = std::string(pckm.st, p - pckm.st); }
#line 481 "cfg.cpp"
goto _st7;
_st7:
if ( p == eof )
goto _out7;
p+= 1;
st_case_7:
if ( p == pe && p != eof )
goto _out7;
if ( p == eof ) {
goto _ctr19;}
else {
switch( ( (*( p))) ) {
case 0: {
goto _st0;
}
case 9: {
goto _ctr6;
}
case 32: {
goto _ctr6;
}
case 92: {
goto _st8;
}
}
goto _st7;
}
_ctr18:
{
#line 103 "cfg.rl"
pckm.st = p; }
#line 515 "cfg.cpp"
goto _st8;
_ctr22:
{
#line 104 "cfg.rl"
fas.wm->cmd_ = std::string(pckm.st, p - pckm.st);
string_replace_all(fas.wm->cmd_, "\\ ", 2, " ");
string_replace_all(fas.wm->cmd_, "\\\\", 2, "\\");
}
#line 527 "cfg.cpp"
{
#line 109 "cfg.rl"
fas.wm->args_ = std::string(pckm.st, p - pckm.st); }
#line 533 "cfg.cpp"
goto _st8;
_st8:
if ( p == eof )
goto _out8;
p+= 1;
st_case_8:
if ( p == pe && p != eof )
goto _out8;
if ( p == eof ) {
goto _ctr22;}
else {
switch( ( (*( p))) ) {
case 0: {
goto _st0;
}
case 9: {
goto _ctr6;
}
case 32: {
goto _ctr14;
}
case 92: {
goto _st8;
}
}
goto _st7;
}
_out1: pckm.cs = 1; goto _out;
_out2: pckm.cs = 2; goto _out;
_out0: pckm.cs = 0; goto _out;
_out3: pckm.cs = 3; goto _out;
_out4: pckm.cs = 4; goto _out;
_out5: pckm.cs = 5; goto _out;
_out6: pckm.cs = 6; goto _out;
_out7: pckm.cs = 7; goto _out;
_out8: pckm.cs = 8; goto _out;
_out: {}
}
#line 140 "cfg.rl"
if (pckm.cs == parse_cmd_key_m_error) {
fas.cmdret = -1;
log_line("Malformed 'command' value at line %zu", fas.linenum);
std::exit(EXIT_FAILURE);
} else if (pckm.cs >= parse_cmd_key_m_first_final)
fas.cmdret = 1;
else {
fas.cmdret = -2;
log_line("Incomplete 'command' value at line %zu", fas.linenum);
std::exit(EXIT_FAILURE);
}
}
#line 300 "cfg.rl"
#line 595 "cfg.cpp"
static const int factions_start = 1;
static const int factions_first_final = 212;
static const int factions_error = 0;
static const int factions_en_main = 1;
#line 302 "cfg.rl"
static int do_parse_config(ParseCfgState &fas, const char *p, size_t plen)
{
const char *pe = p + plen;
const char *eof = pe;
#line 612 "cfg.cpp"
{
fas.cs = (int)factions_start;
}
#line 309 "cfg.rl"
#line 620 "cfg.cpp"
{
switch ( fas.cs ) {
case 1:
goto st_case_1;
case 0:
goto st_case_0;
case 2:
goto st_case_2;
case 212:
goto st_case_212;
case 3:
goto st_case_3;
case 4:
goto st_case_4;
case 5:
goto st_case_5;
case 6:
goto st_case_6;
case 7:
goto st_case_7;
case 8:
goto st_case_8;
case 9:
goto st_case_9;
case 213:
goto st_case_213;
case 214:
goto st_case_214;
case 10:
goto st_case_10;
case 11:
goto st_case_11;
case 12:
goto st_case_12;
case 13:
goto st_case_13;
case 14:
goto st_case_14;
case 15:
goto st_case_15;
case 16:
goto st_case_16;
case 215:
goto st_case_215;
case 216:
goto st_case_216;
case 17:
goto st_case_17;
case 18:
goto st_case_18;
case 19:
goto st_case_19;
case 20:
goto st_case_20;
case 21:
goto st_case_21;
case 22:
goto st_case_22;
case 23:
goto st_case_23;
case 24:
goto st_case_24;
case 25:
goto st_case_25;
case 26:
goto st_case_26;
case 27:
goto st_case_27;
case 28:
goto st_case_28;
case 29:
goto st_case_29;
case 30:
goto st_case_30;
case 217:
goto st_case_217;
case 31:
goto st_case_31;
case 32:
goto st_case_32;
case 33:
goto st_case_33;
case 34:
goto st_case_34;
case 35:
goto st_case_35;
case 218:
goto st_case_218;
case 36:
goto st_case_36;
case 37:
goto st_case_37;
case 38:
goto st_case_38;
case 39:
goto st_case_39;
case 40:
goto st_case_40;
case 41:
goto st_case_41;
case 219:
goto st_case_219;
case 42:
goto st_case_42;
case 43:
goto st_case_43;
case 44:
goto st_case_44;
case 45:
goto st_case_45;
case 220:
goto st_case_220;
case 46:
goto st_case_46;
case 47:
goto st_case_47;
case 48:
goto st_case_48;
case 49:
goto st_case_49;
case 221:
goto st_case_221;
case 50:
goto st_case_50;
case 51:
goto st_case_51;
case 52:
goto st_case_52;
case 53:
goto st_case_53;
case 54:
goto st_case_54;
case 55:
goto st_case_55;
case 222:
goto st_case_222;
case 56:
goto st_case_56;
case 57:
goto st_case_57;
case 58:
goto st_case_58;
case 59:
goto st_case_59;
case 223:
goto st_case_223;
case 60:
goto st_case_60;
case 61:
goto st_case_61;
case 62:
goto st_case_62;
case 63:
goto st_case_63;
case 224:
goto st_case_224;
case 64:
goto st_case_64;
case 65:
goto st_case_65;
case 66:
goto st_case_66;
case 67:
goto st_case_67;
case 68:
goto st_case_68;
case 225:
goto st_case_225;
case 69:
goto st_case_69;
case 70:
goto st_case_70;
case 71:
goto st_case_71;
case 226:
goto st_case_226;
case 72:
goto st_case_72;
case 73:
goto st_case_73;
case 74:
goto st_case_74;
case 75:
goto st_case_75;
case 76:
goto st_case_76;
case 227:
goto st_case_227;
case 77:
goto st_case_77;
case 228:
goto st_case_228;
case 78:
goto st_case_78;
case 79:
goto st_case_79;
case 80:
goto st_case_80;
case 229:
goto st_case_229;
case 81:
goto st_case_81;
case 82:
goto st_case_82;
case 83:
goto st_case_83;
case 230:
goto st_case_230;
case 84:
goto st_case_84;
case 231:
goto st_case_231;
case 85:
goto st_case_85;
case 86:
goto st_case_86;
case 87:
goto st_case_87;
case 232:
goto st_case_232;
case 88:
goto st_case_88;
case 89:
goto st_case_89;
case 90:
goto st_case_90;
case 91:
goto st_case_91;
case 92:
goto st_case_92;
case 93:
goto st_case_93;
case 233:
goto st_case_233;
case 234:
goto st_case_234;
case 94:
goto st_case_94;
case 95:
goto st_case_95;
case 96:
goto st_case_96;
case 97:
goto st_case_97;
case 98:
goto st_case_98;
case 235:
goto st_case_235;
case 99:
goto st_case_99;
case 236:
goto st_case_236;
case 100:
goto st_case_100;
case 101:
goto st_case_101;
case 102:
goto st_case_102;
case 103:
goto st_case_103;
case 104:
goto st_case_104;
case 237:
goto st_case_237;
case 105:
goto st_case_105;
case 238:
goto st_case_238;
case 106:
goto st_case_106;
case 107:
goto st_case_107;
case 108:
goto st_case_108;
case 239:
goto st_case_239;
case 109:
goto st_case_109;
case 240:
goto st_case_240;
case 110:
goto st_case_110;
case 111:
goto st_case_111;
case 112:
goto st_case_112;
case 113:
goto st_case_113;
case 114:
goto st_case_114;
case 241:
goto st_case_241;
case 115:
goto st_case_115;
case 242:
goto st_case_242;
case 116:
goto st_case_116;
case 117:
goto st_case_117;
case 118:
goto st_case_118;
case 119:
goto st_case_119;
case 120:
goto st_case_120;
case 121:
goto st_case_121;
case 243:
goto st_case_243;
case 122:
goto st_case_122;
case 244:
goto st_case_244;
case 123:
goto st_case_123;
case 124:
goto st_case_124;
case 125:
goto st_case_125;
case 126:
goto st_case_126;
case 127:
goto st_case_127;
case 128:
goto st_case_128;
case 129:
goto st_case_129;
case 130:
goto st_case_130;
case 245:
goto st_case_245;
case 131:
goto st_case_131;
case 246:
goto st_case_246;
case 132:
goto st_case_132;
case 133:
goto st_case_133;
case 134:
goto st_case_134;
case 135:
goto st_case_135;
case 136:
goto st_case_136;
case 137:
goto st_case_137;
case 138:
goto st_case_138;
case 139:
goto st_case_139;
case 247:
goto st_case_247;
case 140:
goto st_case_140;
case 248:
goto st_case_248;
case 141:
goto st_case_141;
case 142:
goto st_case_142;
case 143:
goto st_case_143;
case 144:
goto st_case_144;
case 145:
goto st_case_145;
case 249:
goto st_case_249;
case 146:
goto st_case_146;
case 250:
goto st_case_250;
case 147:
goto st_case_147;
case 148:
goto st_case_148;
case 149:
goto st_case_149;
case 150: